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 | { | |
372316f1 PA |
403 | struct thread_info *tp; |
404 | ||
a25a5a45 PA |
405 | if (always_inserted_mode) |
406 | { | |
407 | /* The user wants breakpoints inserted even if all threads | |
408 | are stopped. */ | |
409 | return 1; | |
410 | } | |
411 | ||
b57bacec PA |
412 | if (threads_are_executing ()) |
413 | return 1; | |
372316f1 PA |
414 | |
415 | /* Don't remove breakpoints yet if, even though all threads are | |
416 | stopped, we still have events to process. */ | |
417 | ALL_NON_EXITED_THREADS (tp) | |
418 | if (tp->resumed | |
419 | && tp->suspend.waitstatus_pending_p) | |
420 | return 1; | |
a25a5a45 PA |
421 | } |
422 | return 0; | |
33e5cbd6 | 423 | } |
765dc015 | 424 | |
b775012e LM |
425 | static const char condition_evaluation_both[] = "host or target"; |
426 | ||
427 | /* Modes for breakpoint condition evaluation. */ | |
428 | static const char condition_evaluation_auto[] = "auto"; | |
429 | static const char condition_evaluation_host[] = "host"; | |
430 | static const char condition_evaluation_target[] = "target"; | |
431 | static const char *const condition_evaluation_enums[] = { | |
432 | condition_evaluation_auto, | |
433 | condition_evaluation_host, | |
434 | condition_evaluation_target, | |
435 | NULL | |
436 | }; | |
437 | ||
438 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
439 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
440 | ||
441 | /* Global that we use to display information to the user (gets its value from | |
442 | condition_evaluation_mode_1. */ | |
443 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
444 | ||
445 | /* Translate a condition evaluation mode MODE into either "host" | |
446 | or "target". This is used mostly to translate from "auto" to the | |
447 | real setting that is being used. It returns the translated | |
448 | evaluation mode. */ | |
449 | ||
450 | static const char * | |
451 | translate_condition_evaluation_mode (const char *mode) | |
452 | { | |
453 | if (mode == condition_evaluation_auto) | |
454 | { | |
455 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
456 | return condition_evaluation_target; | |
457 | else | |
458 | return condition_evaluation_host; | |
459 | } | |
460 | else | |
461 | return mode; | |
462 | } | |
463 | ||
464 | /* Discovers what condition_evaluation_auto translates to. */ | |
465 | ||
466 | static const char * | |
467 | breakpoint_condition_evaluation_mode (void) | |
468 | { | |
469 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
470 | } | |
471 | ||
472 | /* Return true if GDB should evaluate breakpoint conditions or false | |
473 | otherwise. */ | |
474 | ||
475 | static int | |
476 | gdb_evaluates_breakpoint_condition_p (void) | |
477 | { | |
478 | const char *mode = breakpoint_condition_evaluation_mode (); | |
479 | ||
480 | return (mode == condition_evaluation_host); | |
481 | } | |
482 | ||
c906108c SS |
483 | /* Are we executing breakpoint commands? */ |
484 | static int executing_breakpoint_commands; | |
485 | ||
c02f5703 MS |
486 | /* Are overlay event breakpoints enabled? */ |
487 | static int overlay_events_enabled; | |
488 | ||
e09342b5 TJB |
489 | /* See description in breakpoint.h. */ |
490 | int target_exact_watchpoints = 0; | |
491 | ||
c906108c | 492 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 493 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 494 | current breakpoint. */ |
c906108c | 495 | |
5c44784c | 496 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 497 | |
5c44784c JM |
498 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
499 | for (B = breakpoint_chain; \ | |
500 | B ? (TMP=B->next, 1): 0; \ | |
501 | B = TMP) | |
c906108c | 502 | |
4a64f543 MS |
503 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
504 | not provided so update_global_location_list must not be called | |
505 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 506 | |
876fa593 | 507 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
508 | for (BP_TMP = bp_locations; \ |
509 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 510 | BP_TMP++) |
7cc221ef | 511 | |
b775012e LM |
512 | /* Iterates through locations with address ADDRESS for the currently selected |
513 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
514 | to where the loop should start from. | |
515 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
516 | appropriate location to start with. */ | |
517 | ||
518 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
519 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
520 | BP_LOCP_TMP = BP_LOCP_START; \ | |
521 | BP_LOCP_START \ | |
f5336ca5 | 522 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
523 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
524 | BP_LOCP_TMP++) | |
525 | ||
1042e4c0 SS |
526 | /* Iterator for tracepoints only. */ |
527 | ||
528 | #define ALL_TRACEPOINTS(B) \ | |
529 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 530 | if (is_tracepoint (B)) |
1042e4c0 | 531 | |
7cc221ef | 532 | /* Chains of all breakpoints defined. */ |
c906108c SS |
533 | |
534 | struct breakpoint *breakpoint_chain; | |
535 | ||
f5336ca5 | 536 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 537 | |
f5336ca5 | 538 | static struct bp_location **bp_locations; |
876fa593 | 539 | |
f5336ca5 | 540 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 541 | |
f5336ca5 | 542 | static unsigned bp_locations_count; |
876fa593 | 543 | |
4a64f543 | 544 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 545 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 546 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 547 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 548 | an address you need to read. */ |
876fa593 | 549 | |
f5336ca5 | 550 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 551 | |
4a64f543 MS |
552 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
553 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
554 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
555 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 556 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 557 | |
f5336ca5 | 558 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 559 | |
4a64f543 | 560 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
561 | from the bp_locations array, but for which a hit may still be |
562 | reported by a target. */ | |
20874c92 VP |
563 | VEC(bp_location_p) *moribund_locations = NULL; |
564 | ||
c906108c SS |
565 | /* Number of last breakpoint made. */ |
566 | ||
95a42b64 TT |
567 | static int breakpoint_count; |
568 | ||
86b17b60 PA |
569 | /* The value of `breakpoint_count' before the last command that |
570 | created breakpoints. If the last (break-like) command created more | |
571 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
572 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
573 | static int prev_breakpoint_count; | |
c906108c | 574 | |
1042e4c0 SS |
575 | /* Number of last tracepoint made. */ |
576 | ||
95a42b64 | 577 | static int tracepoint_count; |
1042e4c0 | 578 | |
6149aea9 PA |
579 | static struct cmd_list_element *breakpoint_set_cmdlist; |
580 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 581 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 582 | |
badd37ce SDJ |
583 | /* See declaration at breakpoint.h. */ |
584 | ||
585 | struct breakpoint * | |
586 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
587 | void *user_data) | |
588 | { | |
589 | struct breakpoint *b = NULL; | |
590 | ||
591 | ALL_BREAKPOINTS (b) | |
592 | { | |
593 | if (func (b, user_data) != 0) | |
594 | break; | |
595 | } | |
596 | ||
597 | return b; | |
598 | } | |
599 | ||
468d015d JJ |
600 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
601 | static int | |
602 | breakpoint_enabled (struct breakpoint *b) | |
603 | { | |
0d381245 | 604 | return (b->enable_state == bp_enabled); |
468d015d JJ |
605 | } |
606 | ||
c906108c SS |
607 | /* Set breakpoint count to NUM. */ |
608 | ||
95a42b64 | 609 | static void |
fba45db2 | 610 | set_breakpoint_count (int num) |
c906108c | 611 | { |
86b17b60 | 612 | prev_breakpoint_count = breakpoint_count; |
c906108c | 613 | breakpoint_count = num; |
4fa62494 | 614 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
615 | } |
616 | ||
86b17b60 PA |
617 | /* Used by `start_rbreak_breakpoints' below, to record the current |
618 | breakpoint count before "rbreak" creates any breakpoint. */ | |
619 | static int rbreak_start_breakpoint_count; | |
620 | ||
95a42b64 TT |
621 | /* Called at the start an "rbreak" command to record the first |
622 | breakpoint made. */ | |
86b17b60 | 623 | |
c80049d3 | 624 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 625 | { |
86b17b60 | 626 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
627 | } |
628 | ||
629 | /* Called at the end of an "rbreak" command to record the last | |
630 | breakpoint made. */ | |
86b17b60 | 631 | |
c80049d3 | 632 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 633 | { |
86b17b60 | 634 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
635 | } |
636 | ||
4a64f543 | 637 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
638 | |
639 | void | |
fba45db2 | 640 | clear_breakpoint_hit_counts (void) |
c906108c SS |
641 | { |
642 | struct breakpoint *b; | |
643 | ||
644 | ALL_BREAKPOINTS (b) | |
645 | b->hit_count = 0; | |
646 | } | |
647 | ||
c906108c | 648 | \f |
48cb2d85 VP |
649 | /* Return the breakpoint with the specified number, or NULL |
650 | if the number does not refer to an existing breakpoint. */ | |
651 | ||
652 | struct breakpoint * | |
653 | get_breakpoint (int num) | |
654 | { | |
655 | struct breakpoint *b; | |
656 | ||
657 | ALL_BREAKPOINTS (b) | |
658 | if (b->number == num) | |
659 | return b; | |
660 | ||
661 | return NULL; | |
662 | } | |
5c44784c | 663 | |
c906108c | 664 | \f |
adc36818 | 665 | |
b775012e LM |
666 | /* Mark locations as "conditions have changed" in case the target supports |
667 | evaluating conditions on its side. */ | |
668 | ||
669 | static void | |
670 | mark_breakpoint_modified (struct breakpoint *b) | |
671 | { | |
672 | struct bp_location *loc; | |
673 | ||
674 | /* This is only meaningful if the target is | |
675 | evaluating conditions and if the user has | |
676 | opted for condition evaluation on the target's | |
677 | side. */ | |
678 | if (gdb_evaluates_breakpoint_condition_p () | |
679 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
680 | return; | |
681 | ||
682 | if (!is_breakpoint (b)) | |
683 | return; | |
684 | ||
685 | for (loc = b->loc; loc; loc = loc->next) | |
686 | loc->condition_changed = condition_modified; | |
687 | } | |
688 | ||
689 | /* Mark location as "conditions have changed" in case the target supports | |
690 | evaluating conditions on its side. */ | |
691 | ||
692 | static void | |
693 | mark_breakpoint_location_modified (struct bp_location *loc) | |
694 | { | |
695 | /* This is only meaningful if the target is | |
696 | evaluating conditions and if the user has | |
697 | opted for condition evaluation on the target's | |
698 | side. */ | |
699 | if (gdb_evaluates_breakpoint_condition_p () | |
700 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
701 | ||
702 | return; | |
703 | ||
704 | if (!is_breakpoint (loc->owner)) | |
705 | return; | |
706 | ||
707 | loc->condition_changed = condition_modified; | |
708 | } | |
709 | ||
710 | /* Sets the condition-evaluation mode using the static global | |
711 | condition_evaluation_mode. */ | |
712 | ||
713 | static void | |
eb4c3f4a | 714 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
715 | struct cmd_list_element *c) |
716 | { | |
b775012e LM |
717 | const char *old_mode, *new_mode; |
718 | ||
719 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
720 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
721 | { | |
722 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
723 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
724 | "Using host evaluation mode instead.")); | |
725 | return; | |
726 | } | |
727 | ||
728 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
729 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
730 | ||
abf1152a JK |
731 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
732 | settings was "auto". */ | |
733 | condition_evaluation_mode = condition_evaluation_mode_1; | |
734 | ||
b775012e LM |
735 | /* Only update the mode if the user picked a different one. */ |
736 | if (new_mode != old_mode) | |
737 | { | |
738 | struct bp_location *loc, **loc_tmp; | |
739 | /* If the user switched to a different evaluation mode, we | |
740 | need to synch the changes with the target as follows: | |
741 | ||
742 | "host" -> "target": Send all (valid) conditions to the target. | |
743 | "target" -> "host": Remove all the conditions from the target. | |
744 | */ | |
745 | ||
b775012e LM |
746 | if (new_mode == condition_evaluation_target) |
747 | { | |
748 | /* Mark everything modified and synch conditions with the | |
749 | target. */ | |
750 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
751 | mark_breakpoint_location_modified (loc); | |
752 | } | |
753 | else | |
754 | { | |
755 | /* Manually mark non-duplicate locations to synch conditions | |
756 | with the target. We do this to remove all the conditions the | |
757 | target knows about. */ | |
758 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
759 | if (is_breakpoint (loc->owner) && loc->inserted) | |
760 | loc->needs_update = 1; | |
761 | } | |
762 | ||
763 | /* Do the update. */ | |
44702360 | 764 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
765 | } |
766 | ||
767 | return; | |
768 | } | |
769 | ||
770 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
771 | what "auto" is translating to. */ | |
772 | ||
773 | static void | |
774 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
775 | struct cmd_list_element *c, const char *value) | |
776 | { | |
777 | if (condition_evaluation_mode == condition_evaluation_auto) | |
778 | fprintf_filtered (file, | |
779 | _("Breakpoint condition evaluation " | |
780 | "mode is %s (currently %s).\n"), | |
781 | value, | |
782 | breakpoint_condition_evaluation_mode ()); | |
783 | else | |
784 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
785 | value); | |
786 | } | |
787 | ||
788 | /* A comparison function for bp_location AP and BP that is used by | |
789 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 790 | the more general bp_locations_compare function. */ |
b775012e LM |
791 | |
792 | static int | |
f5336ca5 | 793 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 794 | { |
9a3c8263 SM |
795 | const struct bp_location *a = *(const struct bp_location **) ap; |
796 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
797 | |
798 | if (a->address == b->address) | |
799 | return 0; | |
800 | else | |
801 | return ((a->address > b->address) - (a->address < b->address)); | |
802 | } | |
803 | ||
804 | /* Helper function to skip all bp_locations with addresses | |
805 | less than ADDRESS. It returns the first bp_location that | |
806 | is greater than or equal to ADDRESS. If none is found, just | |
807 | return NULL. */ | |
808 | ||
809 | static struct bp_location ** | |
810 | get_first_locp_gte_addr (CORE_ADDR address) | |
811 | { | |
812 | struct bp_location dummy_loc; | |
813 | struct bp_location *dummy_locp = &dummy_loc; | |
814 | struct bp_location **locp_found = NULL; | |
815 | ||
816 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
817 | dummy_loc.address = address; |
818 | ||
819 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 820 | locp_found = ((struct bp_location **) |
f5336ca5 | 821 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 822 | sizeof (struct bp_location **), |
f5336ca5 | 823 | bp_locations_compare_addrs)); |
b775012e LM |
824 | |
825 | /* Nothing was found, nothing left to do. */ | |
826 | if (locp_found == NULL) | |
827 | return NULL; | |
828 | ||
829 | /* We may have found a location that is at ADDRESS but is not the first in the | |
830 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 831 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
832 | && (*(locp_found - 1))->address == address) |
833 | locp_found--; | |
834 | ||
835 | return locp_found; | |
836 | } | |
837 | ||
adc36818 | 838 | void |
7a26bd4d | 839 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
840 | int from_tty) |
841 | { | |
3a5c3e22 PA |
842 | xfree (b->cond_string); |
843 | b->cond_string = NULL; | |
adc36818 | 844 | |
3a5c3e22 | 845 | if (is_watchpoint (b)) |
adc36818 | 846 | { |
3a5c3e22 PA |
847 | struct watchpoint *w = (struct watchpoint *) b; |
848 | ||
4d01a485 | 849 | w->cond_exp.reset (); |
3a5c3e22 PA |
850 | } |
851 | else | |
852 | { | |
853 | struct bp_location *loc; | |
854 | ||
855 | for (loc = b->loc; loc; loc = loc->next) | |
856 | { | |
4d01a485 | 857 | loc->cond.reset (); |
b775012e LM |
858 | |
859 | /* No need to free the condition agent expression | |
860 | bytecode (if we have one). We will handle this | |
861 | when we go through update_global_location_list. */ | |
3a5c3e22 | 862 | } |
adc36818 | 863 | } |
adc36818 PM |
864 | |
865 | if (*exp == 0) | |
866 | { | |
867 | if (from_tty) | |
868 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
869 | } | |
870 | else | |
871 | { | |
bbc13ae3 | 872 | const char *arg = exp; |
cc59ec59 | 873 | |
adc36818 PM |
874 | /* I don't know if it matters whether this is the string the user |
875 | typed in or the decompiled expression. */ | |
876 | b->cond_string = xstrdup (arg); | |
877 | b->condition_not_parsed = 0; | |
878 | ||
879 | if (is_watchpoint (b)) | |
880 | { | |
3a5c3e22 PA |
881 | struct watchpoint *w = (struct watchpoint *) b; |
882 | ||
aee1fcdf | 883 | innermost_block.reset (); |
adc36818 | 884 | arg = exp; |
1bb9788d | 885 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
886 | if (*arg) |
887 | error (_("Junk at end of expression")); | |
aee1fcdf | 888 | w->cond_exp_valid_block = innermost_block.block (); |
adc36818 PM |
889 | } |
890 | else | |
891 | { | |
3a5c3e22 PA |
892 | struct bp_location *loc; |
893 | ||
adc36818 PM |
894 | for (loc = b->loc; loc; loc = loc->next) |
895 | { | |
896 | arg = exp; | |
897 | loc->cond = | |
1bb9788d TT |
898 | parse_exp_1 (&arg, loc->address, |
899 | block_for_pc (loc->address), 0); | |
adc36818 PM |
900 | if (*arg) |
901 | error (_("Junk at end of expression")); | |
902 | } | |
903 | } | |
904 | } | |
b775012e LM |
905 | mark_breakpoint_modified (b); |
906 | ||
76727919 | 907 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
908 | } |
909 | ||
d55637df TT |
910 | /* Completion for the "condition" command. */ |
911 | ||
eb3ff9a5 | 912 | static void |
6f937416 | 913 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 914 | completion_tracker &tracker, |
6f937416 | 915 | const char *text, const char *word) |
d55637df | 916 | { |
6f937416 | 917 | const char *space; |
d55637df | 918 | |
f1735a53 TT |
919 | text = skip_spaces (text); |
920 | space = skip_to_space (text); | |
d55637df TT |
921 | if (*space == '\0') |
922 | { | |
923 | int len; | |
924 | struct breakpoint *b; | |
d55637df TT |
925 | |
926 | if (text[0] == '$') | |
927 | { | |
928 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
929 | if (!isdigit (text[1])) |
930 | complete_internalvar (tracker, &text[1]); | |
931 | return; | |
d55637df TT |
932 | } |
933 | ||
934 | /* We're completing the breakpoint number. */ | |
935 | len = strlen (text); | |
936 | ||
937 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
938 | { |
939 | char number[50]; | |
940 | ||
941 | xsnprintf (number, sizeof (number), "%d", b->number); | |
942 | ||
943 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
944 | { |
945 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
946 | tracker.add_completion (std::move (copy)); | |
947 | } | |
58ce7251 | 948 | } |
d55637df | 949 | |
eb3ff9a5 | 950 | return; |
d55637df TT |
951 | } |
952 | ||
953 | /* We're completing the expression part. */ | |
f1735a53 | 954 | text = skip_spaces (space); |
eb3ff9a5 | 955 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
956 | } |
957 | ||
c906108c SS |
958 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
959 | ||
960 | static void | |
0b39b52e | 961 | condition_command (const char *arg, int from_tty) |
c906108c | 962 | { |
52f0bd74 | 963 | struct breakpoint *b; |
0b39b52e | 964 | const char *p; |
52f0bd74 | 965 | int bnum; |
c906108c SS |
966 | |
967 | if (arg == 0) | |
e2e0b3e5 | 968 | error_no_arg (_("breakpoint number")); |
c906108c SS |
969 | |
970 | p = arg; | |
971 | bnum = get_number (&p); | |
5c44784c | 972 | if (bnum == 0) |
8a3fe4f8 | 973 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
974 | |
975 | ALL_BREAKPOINTS (b) | |
976 | if (b->number == bnum) | |
2f069f6f | 977 | { |
6dddc817 DE |
978 | /* Check if this breakpoint has a "stop" method implemented in an |
979 | extension language. This method and conditions entered into GDB | |
980 | from the CLI are mutually exclusive. */ | |
981 | const struct extension_language_defn *extlang | |
982 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
983 | ||
984 | if (extlang != NULL) | |
985 | { | |
986 | error (_("Only one stop condition allowed. There is currently" | |
987 | " a %s stop condition defined for this breakpoint."), | |
988 | ext_lang_capitalized_name (extlang)); | |
989 | } | |
2566ad2d | 990 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
991 | |
992 | if (is_breakpoint (b)) | |
44702360 | 993 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 994 | |
2f069f6f JB |
995 | return; |
996 | } | |
c906108c | 997 | |
8a3fe4f8 | 998 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
999 | } |
1000 | ||
a7bdde9e VP |
1001 | /* Check that COMMAND do not contain commands that are suitable |
1002 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1003 | Throw if any such commands is found. */ |
1004 | ||
a7bdde9e VP |
1005 | static void |
1006 | check_no_tracepoint_commands (struct command_line *commands) | |
1007 | { | |
1008 | struct command_line *c; | |
cc59ec59 | 1009 | |
a7bdde9e VP |
1010 | for (c = commands; c; c = c->next) |
1011 | { | |
1012 | int i; | |
1013 | ||
1014 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1015 | error (_("The 'while-stepping' command can " |
1016 | "only be used for tracepoints")); | |
a7bdde9e | 1017 | |
12973681 TT |
1018 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1019 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1020 | |
1021 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1022 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1023 | command directly. */ |
1024 | if (strstr (c->line, "collect ") == c->line) | |
1025 | error (_("The 'collect' command can only be used for tracepoints")); | |
1026 | ||
51661e93 VP |
1027 | if (strstr (c->line, "teval ") == c->line) |
1028 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1029 | } |
1030 | } | |
1031 | ||
c1fc2657 | 1032 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1033 | { |
c1fc2657 | 1034 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1035 | }; |
1036 | ||
d77f58be SS |
1037 | /* Encapsulate tests for different types of tracepoints. */ |
1038 | ||
3b0871f4 SM |
1039 | static bool |
1040 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1041 | { |
1042 | return (type == bp_tracepoint | |
1043 | || type == bp_fast_tracepoint | |
1044 | || type == bp_static_tracepoint); | |
1045 | } | |
1046 | ||
3b0871f4 SM |
1047 | static bool |
1048 | is_longjmp_type (bptype type) | |
1049 | { | |
1050 | return type == bp_longjmp || type == bp_exception; | |
1051 | } | |
1052 | ||
a7bdde9e | 1053 | int |
d77f58be | 1054 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1055 | { |
d9b3f62e | 1056 | return is_tracepoint_type (b->type); |
a7bdde9e | 1057 | } |
d9b3f62e | 1058 | |
a5e364af SM |
1059 | /* Factory function to create an appropriate instance of breakpoint given |
1060 | TYPE. */ | |
1061 | ||
1062 | static std::unique_ptr<breakpoint> | |
1063 | new_breakpoint_from_type (bptype type) | |
1064 | { | |
1065 | breakpoint *b; | |
1066 | ||
1067 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1068 | b = new tracepoint (); |
3b0871f4 | 1069 | else if (is_longjmp_type (type)) |
c1fc2657 | 1070 | b = new longjmp_breakpoint (); |
a5e364af SM |
1071 | else |
1072 | b = new breakpoint (); | |
1073 | ||
1074 | return std::unique_ptr<breakpoint> (b); | |
1075 | } | |
1076 | ||
e5dd4106 | 1077 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1078 | breakpoint. This function will throw an exception if a problem is |
1079 | found. */ | |
48cb2d85 | 1080 | |
95a42b64 TT |
1081 | static void |
1082 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1083 | struct command_line *commands) | |
48cb2d85 | 1084 | { |
d77f58be | 1085 | if (is_tracepoint (b)) |
a7bdde9e | 1086 | { |
c9a6ce02 | 1087 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1088 | struct command_line *c; |
1089 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1090 | |
1091 | /* Reset the while-stepping step count. The previous commands | |
1092 | might have included a while-stepping action, while the new | |
1093 | ones might not. */ | |
1094 | t->step_count = 0; | |
1095 | ||
1096 | /* We need to verify that each top-level element of commands is | |
1097 | valid for tracepoints, that there's at most one | |
1098 | while-stepping element, and that the while-stepping's body | |
1099 | has valid tracing commands excluding nested while-stepping. | |
1100 | We also need to validate the tracepoint action line in the | |
1101 | context of the tracepoint --- validate_actionline actually | |
1102 | has side effects, like setting the tracepoint's | |
1103 | while-stepping STEP_COUNT, in addition to checking if the | |
1104 | collect/teval actions parse and make sense in the | |
1105 | tracepoint's context. */ | |
a7bdde9e VP |
1106 | for (c = commands; c; c = c->next) |
1107 | { | |
a7bdde9e VP |
1108 | if (c->control_type == while_stepping_control) |
1109 | { | |
1110 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1111 | error (_("The 'while-stepping' command " |
1112 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1113 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1114 | error (_("The 'while-stepping' command " |
1115 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1116 | |
1117 | if (while_stepping) | |
3e43a32a MS |
1118 | error (_("The 'while-stepping' command " |
1119 | "can be used only once")); | |
a7bdde9e VP |
1120 | else |
1121 | while_stepping = c; | |
1122 | } | |
c9a6ce02 PA |
1123 | |
1124 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1125 | } |
1126 | if (while_stepping) | |
1127 | { | |
1128 | struct command_line *c2; | |
1129 | ||
12973681 TT |
1130 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1131 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1132 | for (; c2; c2 = c2->next) |
1133 | { | |
a7bdde9e VP |
1134 | if (c2->control_type == while_stepping_control) |
1135 | error (_("The 'while-stepping' command cannot be nested")); | |
1136 | } | |
1137 | } | |
1138 | } | |
1139 | else | |
1140 | { | |
1141 | check_no_tracepoint_commands (commands); | |
1142 | } | |
95a42b64 TT |
1143 | } |
1144 | ||
0fb4aa4b PA |
1145 | /* Return a vector of all the static tracepoints set at ADDR. The |
1146 | caller is responsible for releasing the vector. */ | |
1147 | ||
1148 | VEC(breakpoint_p) * | |
1149 | static_tracepoints_here (CORE_ADDR addr) | |
1150 | { | |
1151 | struct breakpoint *b; | |
1152 | VEC(breakpoint_p) *found = 0; | |
1153 | struct bp_location *loc; | |
1154 | ||
1155 | ALL_BREAKPOINTS (b) | |
1156 | if (b->type == bp_static_tracepoint) | |
1157 | { | |
1158 | for (loc = b->loc; loc; loc = loc->next) | |
1159 | if (loc->address == addr) | |
1160 | VEC_safe_push(breakpoint_p, found, b); | |
1161 | } | |
1162 | ||
1163 | return found; | |
1164 | } | |
1165 | ||
95a42b64 | 1166 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1167 | validate that only allowed commands are included. */ |
95a42b64 TT |
1168 | |
1169 | void | |
4a64f543 | 1170 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1171 | counted_command_line &&commands) |
95a42b64 | 1172 | { |
93921405 | 1173 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1174 | |
d1b0a7bf | 1175 | b->commands = std::move (commands); |
76727919 | 1176 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1177 | } |
1178 | ||
45a43567 TT |
1179 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1180 | is not the same as the "silent" that may appear in the breakpoint's | |
1181 | commands. */ | |
1182 | ||
1183 | void | |
1184 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1185 | { | |
1186 | int old_silent = b->silent; | |
1187 | ||
1188 | b->silent = silent; | |
1189 | if (old_silent != silent) | |
76727919 | 1190 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1191 | } |
1192 | ||
1193 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1194 | breakpoint work for any thread. */ | |
1195 | ||
1196 | void | |
1197 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1198 | { | |
1199 | int old_thread = b->thread; | |
1200 | ||
1201 | b->thread = thread; | |
1202 | if (old_thread != thread) | |
76727919 | 1203 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1204 | } |
1205 | ||
1206 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1207 | breakpoint work for any task. */ | |
1208 | ||
1209 | void | |
1210 | breakpoint_set_task (struct breakpoint *b, int task) | |
1211 | { | |
1212 | int old_task = b->task; | |
1213 | ||
1214 | b->task = task; | |
1215 | if (old_task != task) | |
76727919 | 1216 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1217 | } |
1218 | ||
95a42b64 | 1219 | static void |
896b6bda | 1220 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1221 | struct command_line *control) |
95a42b64 | 1222 | { |
d1b0a7bf | 1223 | counted_command_line cmd; |
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 | { | |
1240 | if (cmd == NULL) | |
1241 | { | |
48649e1b | 1242 | if (control != NULL) |
12973681 | 1243 | cmd = control->body_list_0; |
48649e1b TT |
1244 | else |
1245 | { | |
81b1e71c TT |
1246 | std::string str |
1247 | = string_printf (_("Type commands for breakpoint(s) " | |
1248 | "%s, one per line."), | |
1249 | arg); | |
48649e1b | 1250 | |
60b3cef2 TT |
1251 | auto do_validate = [=] (const char *line) |
1252 | { | |
1253 | validate_actionline (line, b); | |
1254 | }; | |
1255 | gdb::function_view<void (const char *)> validator; | |
1256 | if (is_tracepoint (b)) | |
1257 | validator = do_validate; | |
1258 | ||
1259 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1260 | } |
48649e1b TT |
1261 | } |
1262 | ||
1263 | /* If a breakpoint was on the list more than once, we don't need to | |
1264 | do anything. */ | |
1265 | if (b->commands != cmd) | |
1266 | { | |
d1b0a7bf | 1267 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1268 | b->commands = cmd; |
76727919 | 1269 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1270 | } |
1271 | }); | |
95a42b64 TT |
1272 | } |
1273 | ||
1274 | static void | |
0b39b52e | 1275 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1276 | { |
1277 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1278 | } |
40c03ae8 EZ |
1279 | |
1280 | /* Like commands_command, but instead of reading the commands from | |
1281 | input stream, takes them from an already parsed command structure. | |
1282 | ||
1283 | This is used by cli-script.c to DTRT with breakpoint commands | |
1284 | that are part of if and while bodies. */ | |
1285 | enum command_control_type | |
896b6bda | 1286 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1287 | { |
95a42b64 TT |
1288 | commands_command_1 (arg, 0, cmd); |
1289 | return simple_control; | |
40c03ae8 | 1290 | } |
876fa593 JK |
1291 | |
1292 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1293 | ||
1294 | static int | |
1295 | bp_location_has_shadow (struct bp_location *bl) | |
1296 | { | |
1297 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1298 | return 0; | |
1299 | if (!bl->inserted) | |
1300 | return 0; | |
1301 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1302 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1303 | return 0; |
1304 | return 1; | |
1305 | } | |
1306 | ||
9d497a19 PA |
1307 | /* Update BUF, which is LEN bytes read from the target address |
1308 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1309 | contents. | |
1310 | ||
1311 | If READBUF is not NULL, this buffer must not overlap with the of | |
1312 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1313 | failed assertion internal error will be raised. */ | |
1314 | ||
1315 | static void | |
1316 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1317 | const gdb_byte *writebuf_org, | |
1318 | ULONGEST memaddr, LONGEST len, | |
1319 | struct bp_target_info *target_info, | |
1320 | struct gdbarch *gdbarch) | |
1321 | { | |
1322 | /* Now do full processing of the found relevant range of elements. */ | |
1323 | CORE_ADDR bp_addr = 0; | |
1324 | int bp_size = 0; | |
1325 | int bptoffset = 0; | |
1326 | ||
1327 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1328 | current_program_space->aspace, 0)) | |
1329 | { | |
1330 | /* The breakpoint is inserted in a different address space. */ | |
1331 | return; | |
1332 | } | |
1333 | ||
1334 | /* Addresses and length of the part of the breakpoint that | |
1335 | we need to copy. */ | |
1336 | bp_addr = target_info->placed_address; | |
1337 | bp_size = target_info->shadow_len; | |
1338 | ||
1339 | if (bp_addr + bp_size <= memaddr) | |
1340 | { | |
1341 | /* The breakpoint is entirely before the chunk of memory we are | |
1342 | reading. */ | |
1343 | return; | |
1344 | } | |
1345 | ||
1346 | if (bp_addr >= memaddr + len) | |
1347 | { | |
1348 | /* The breakpoint is entirely after the chunk of memory we are | |
1349 | reading. */ | |
1350 | return; | |
1351 | } | |
1352 | ||
1353 | /* Offset within shadow_contents. */ | |
1354 | if (bp_addr < memaddr) | |
1355 | { | |
1356 | /* Only copy the second part of the breakpoint. */ | |
1357 | bp_size -= memaddr - bp_addr; | |
1358 | bptoffset = memaddr - bp_addr; | |
1359 | bp_addr = memaddr; | |
1360 | } | |
1361 | ||
1362 | if (bp_addr + bp_size > memaddr + len) | |
1363 | { | |
1364 | /* Only copy the first part of the breakpoint. */ | |
1365 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1366 | } | |
1367 | ||
1368 | if (readbuf != NULL) | |
1369 | { | |
1370 | /* Verify that the readbuf buffer does not overlap with the | |
1371 | shadow_contents buffer. */ | |
1372 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1373 | || readbuf >= (target_info->shadow_contents | |
1374 | + target_info->shadow_len)); | |
1375 | ||
1376 | /* Update the read buffer with this inserted breakpoint's | |
1377 | shadow. */ | |
1378 | memcpy (readbuf + bp_addr - memaddr, | |
1379 | target_info->shadow_contents + bptoffset, bp_size); | |
1380 | } | |
1381 | else | |
1382 | { | |
1383 | const unsigned char *bp; | |
0d5ed153 MR |
1384 | CORE_ADDR addr = target_info->reqstd_address; |
1385 | int placed_size; | |
9d497a19 PA |
1386 | |
1387 | /* Update the shadow with what we want to write to memory. */ | |
1388 | memcpy (target_info->shadow_contents + bptoffset, | |
1389 | writebuf_org + bp_addr - memaddr, bp_size); | |
1390 | ||
1391 | /* Determine appropriate breakpoint contents and size for this | |
1392 | address. */ | |
0d5ed153 | 1393 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1394 | |
1395 | /* Update the final write buffer with this inserted | |
1396 | breakpoint's INSN. */ | |
1397 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1398 | } | |
1399 | } | |
1400 | ||
8defab1a | 1401 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1402 | by replacing any memory breakpoints with their shadowed contents. |
1403 | ||
35c63cd8 JB |
1404 | If READBUF is not NULL, this buffer must not overlap with any of |
1405 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1406 | a failed assertion internal error will be raised. | |
1407 | ||
876fa593 | 1408 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1409 | bl->address - bp_locations_placed_address_before_address_max |
1410 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1411 | The range we were requested to resolve shadows for is: |
1412 | memaddr ... memaddr + len | |
1413 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1414 | memaddr + len <= (bl->address |
f5336ca5 | 1415 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1416 | and: |
f5336ca5 | 1417 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1418 | |
8defab1a | 1419 | void |
f0ba3972 PA |
1420 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1421 | const gdb_byte *writebuf_org, | |
1422 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1423 | { |
4a64f543 MS |
1424 | /* Left boundary, right boundary and median element of our binary |
1425 | search. */ | |
876fa593 JK |
1426 | unsigned bc_l, bc_r, bc; |
1427 | ||
4a64f543 MS |
1428 | /* Find BC_L which is a leftmost element which may affect BUF |
1429 | content. It is safe to report lower value but a failure to | |
1430 | report higher one. */ | |
876fa593 JK |
1431 | |
1432 | bc_l = 0; | |
f5336ca5 | 1433 | bc_r = bp_locations_count; |
876fa593 JK |
1434 | while (bc_l + 1 < bc_r) |
1435 | { | |
35df4500 | 1436 | struct bp_location *bl; |
876fa593 JK |
1437 | |
1438 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1439 | bl = bp_locations[bc]; |
876fa593 | 1440 | |
4a64f543 MS |
1441 | /* Check first BL->ADDRESS will not overflow due to the added |
1442 | constant. Then advance the left boundary only if we are sure | |
1443 | the BC element can in no way affect the BUF content (MEMADDR | |
1444 | to MEMADDR + LEN range). | |
876fa593 | 1445 | |
f5336ca5 | 1446 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1447 | offset so that we cannot miss a breakpoint with its shadow |
1448 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1449 | |
f5336ca5 | 1450 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1451 | >= bl->address) |
f5336ca5 | 1452 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1453 | <= memaddr)) |
876fa593 JK |
1454 | bc_l = bc; |
1455 | else | |
1456 | bc_r = bc; | |
1457 | } | |
1458 | ||
128070bb PA |
1459 | /* Due to the binary search above, we need to make sure we pick the |
1460 | first location that's at BC_L's address. E.g., if there are | |
1461 | multiple locations at the same address, BC_L may end up pointing | |
1462 | at a duplicate location, and miss the "master"/"inserted" | |
1463 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1464 | B: | |
1465 | ||
1466 | L1@A, L2@A, L3@B, ... | |
1467 | ||
1468 | BC_L could end up pointing at location L2, while the "master" | |
1469 | location could be L1. Since the `loc->inserted' flag is only set | |
1470 | on "master" locations, we'd forget to restore the shadow of L1 | |
1471 | and L2. */ | |
1472 | while (bc_l > 0 | |
f5336ca5 | 1473 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1474 | bc_l--; |
1475 | ||
876fa593 JK |
1476 | /* Now do full processing of the found relevant range of elements. */ |
1477 | ||
f5336ca5 | 1478 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1479 | { |
f5336ca5 | 1480 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1481 | |
35df4500 TJB |
1482 | /* bp_location array has BL->OWNER always non-NULL. */ |
1483 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1484 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1485 | bl->owner->number); |
ffce0d52 | 1486 | |
e5dd4106 | 1487 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1488 | content. */ |
1489 | ||
f5336ca5 PA |
1490 | if (bl->address >= bp_locations_placed_address_before_address_max |
1491 | && memaddr + len <= (bl->address | |
1492 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1493 | break; |
1494 | ||
35df4500 | 1495 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1496 | continue; |
6c95b8df | 1497 | |
9d497a19 PA |
1498 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1499 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1500 | } | |
c906108c | 1501 | } |
9d497a19 | 1502 | |
c906108c | 1503 | \f |
c5aa993b | 1504 | |
b775012e LM |
1505 | /* Return true if BPT is either a software breakpoint or a hardware |
1506 | breakpoint. */ | |
1507 | ||
1508 | int | |
1509 | is_breakpoint (const struct breakpoint *bpt) | |
1510 | { | |
1511 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1512 | || bpt->type == bp_hardware_breakpoint |
1513 | || bpt->type == bp_dprintf); | |
b775012e LM |
1514 | } |
1515 | ||
60e1c644 PA |
1516 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1517 | ||
a5606eee | 1518 | static int |
d77f58be | 1519 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1520 | { |
1521 | return (bpt->type == bp_hardware_watchpoint | |
1522 | || bpt->type == bp_read_watchpoint | |
1523 | || bpt->type == bp_access_watchpoint); | |
1524 | } | |
7270d8f2 | 1525 | |
60e1c644 PA |
1526 | /* Return true if BPT is of any watchpoint kind, hardware or |
1527 | software. */ | |
1528 | ||
3a5c3e22 | 1529 | int |
d77f58be | 1530 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1531 | { |
1532 | return (is_hardware_watchpoint (bpt) | |
1533 | || bpt->type == bp_watchpoint); | |
1534 | } | |
1535 | ||
3a5c3e22 PA |
1536 | /* Returns true if the current thread and its running state are safe |
1537 | to evaluate or update watchpoint B. Watchpoints on local | |
1538 | expressions need to be evaluated in the context of the thread that | |
1539 | was current when the watchpoint was created, and, that thread needs | |
1540 | to be stopped to be able to select the correct frame context. | |
1541 | Watchpoints on global expressions can be evaluated on any thread, | |
1542 | and in any state. It is presently left to the target allowing | |
1543 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1544 | |
1545 | static int | |
3a5c3e22 | 1546 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1547 | { |
c1fc2657 | 1548 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1549 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1550 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
00431a78 | 1551 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1552 | } |
1553 | ||
d0fb5eae JK |
1554 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1555 | associated bp_watchpoint_scope breakpoint. */ | |
1556 | ||
1557 | static void | |
3a5c3e22 | 1558 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1559 | { |
c1fc2657 | 1560 | if (w->related_breakpoint != w) |
d0fb5eae | 1561 | { |
c1fc2657 SM |
1562 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1563 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1564 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1565 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1566 | w->related_breakpoint = w; | |
d0fb5eae | 1567 | } |
c1fc2657 | 1568 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1569 | } |
1570 | ||
bb9d5f81 PP |
1571 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1572 | watchpoint W. */ | |
1573 | ||
1574 | static struct value * | |
1575 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1576 | { | |
1577 | struct value *bit_val; | |
1578 | ||
1579 | if (val == NULL) | |
1580 | return NULL; | |
1581 | ||
1582 | bit_val = allocate_value (value_type (val)); | |
1583 | ||
1584 | unpack_value_bitfield (bit_val, | |
1585 | w->val_bitpos, | |
1586 | w->val_bitsize, | |
1587 | value_contents_for_printing (val), | |
1588 | value_offset (val), | |
1589 | val); | |
1590 | ||
1591 | return bit_val; | |
1592 | } | |
1593 | ||
c6d81124 PA |
1594 | /* Allocate a dummy location and add it to B, which must be a software |
1595 | watchpoint. This is required because even if a software watchpoint | |
1596 | is not watching any memory, bpstat_stop_status requires a location | |
1597 | to be able to report stops. */ | |
1598 | ||
1599 | static void | |
1600 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1601 | struct program_space *pspace) | |
1602 | { | |
1603 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1604 | ||
1605 | b->loc = allocate_bp_location (b); | |
1606 | b->loc->pspace = pspace; | |
1607 | b->loc->address = -1; | |
1608 | b->loc->length = -1; | |
1609 | } | |
1610 | ||
1611 | /* Returns true if B is a software watchpoint that is not watching any | |
1612 | memory (e.g., "watch $pc"). */ | |
1613 | ||
1614 | static int | |
1615 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1616 | { | |
1617 | return (b->type == bp_watchpoint | |
1618 | && b->loc != NULL | |
1619 | && b->loc->next == NULL | |
1620 | && b->loc->address == -1 | |
1621 | && b->loc->length == -1); | |
1622 | } | |
1623 | ||
567e1b4e JB |
1624 | /* Assuming that B is a watchpoint: |
1625 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1626 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1627 | - Evaluate the condition if there is one, and store the result |
1628 | in b->loc->cond. | |
a5606eee VP |
1629 | - Update the list of values that must be watched in B->loc. |
1630 | ||
4a64f543 MS |
1631 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1632 | nothing. If this is local watchpoint that is out of scope, delete | |
1633 | it. | |
1634 | ||
1635 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1636 | removed + inserted on each stop here. Normal breakpoints must | |
1637 | never be removed because they might be missed by a running thread | |
1638 | when debugging in non-stop mode. On the other hand, hardware | |
1639 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1640 | to each LWP since they are stored in each LWP's hardware debug | |
1641 | registers. Therefore, such LWP must be stopped first in order to | |
1642 | be able to modify its hardware watchpoints. | |
1643 | ||
1644 | Hardware watchpoints must be reset exactly once after being | |
1645 | presented to the user. It cannot be done sooner, because it would | |
1646 | reset the data used to present the watchpoint hit to the user. And | |
1647 | it must not be done later because it could display the same single | |
1648 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1649 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1650 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1651 | not user-visible - its hit is suppressed if the memory content has | |
1652 | not changed. | |
1653 | ||
1654 | The following constraints influence the location where we can reset | |
1655 | hardware watchpoints: | |
1656 | ||
1657 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1658 | called several times when GDB stops. | |
1659 | ||
1660 | [linux] | |
1661 | * Multiple hardware watchpoints can be hit at the same time, | |
1662 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1663 | hit at a time as the reason for stopping, and all the other hits | |
1664 | are presented later, one after the other, each time the user | |
1665 | requests the execution to be resumed. Execution is not resumed | |
1666 | for the threads still having pending hit event stored in | |
1667 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1668 | the inferior on the first stop the thread hit event is kept being | |
1669 | reported from its cached value by linux_nat_stopped_data_address | |
1670 | until the real thread resume happens after the watchpoint gets | |
1671 | presented and thus its LWP_INFO->STATUS gets reset. | |
1672 | ||
1673 | Therefore the hardware watchpoint hit can get safely reset on the | |
1674 | watchpoint removal from inferior. */ | |
a79d3c27 | 1675 | |
b40ce68a | 1676 | static void |
3a5c3e22 | 1677 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1678 | { |
a5606eee | 1679 | int within_current_scope; |
a5606eee | 1680 | struct frame_id saved_frame_id; |
66076460 | 1681 | int frame_saved; |
a5606eee | 1682 | |
f6bc2008 PA |
1683 | /* If this is a local watchpoint, we only want to check if the |
1684 | watchpoint frame is in scope if the current thread is the thread | |
1685 | that was used to create the watchpoint. */ | |
1686 | if (!watchpoint_in_thread_scope (b)) | |
1687 | return; | |
1688 | ||
c1fc2657 | 1689 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1690 | return; |
1691 | ||
66076460 | 1692 | frame_saved = 0; |
a5606eee VP |
1693 | |
1694 | /* Determine if the watchpoint is within scope. */ | |
1695 | if (b->exp_valid_block == NULL) | |
1696 | within_current_scope = 1; | |
1697 | else | |
1698 | { | |
b5db5dfc UW |
1699 | struct frame_info *fi = get_current_frame (); |
1700 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1701 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1702 | ||
c9cf6e20 MG |
1703 | /* If we're at a point where the stack has been destroyed |
1704 | (e.g. in a function epilogue), unwinding may not work | |
1705 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1706 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1707 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1708 | return; |
66076460 DJ |
1709 | |
1710 | /* Save the current frame's ID so we can restore it after | |
1711 | evaluating the watchpoint expression on its own frame. */ | |
1712 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1713 | took a frame parameter, so that we didn't have to change the | |
1714 | selected frame. */ | |
1715 | frame_saved = 1; | |
1716 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1717 | ||
a5606eee VP |
1718 | fi = frame_find_by_id (b->watchpoint_frame); |
1719 | within_current_scope = (fi != NULL); | |
1720 | if (within_current_scope) | |
1721 | select_frame (fi); | |
1722 | } | |
1723 | ||
b5db5dfc UW |
1724 | /* We don't free locations. They are stored in the bp_location array |
1725 | and update_global_location_list will eventually delete them and | |
1726 | remove breakpoints if needed. */ | |
c1fc2657 | 1727 | b->loc = NULL; |
b5db5dfc | 1728 | |
a5606eee VP |
1729 | if (within_current_scope && reparse) |
1730 | { | |
bbc13ae3 | 1731 | const char *s; |
d63d0675 | 1732 | |
4d01a485 | 1733 | b->exp.reset (); |
d63d0675 | 1734 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1735 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1736 | /* If the meaning of expression itself changed, the old value is |
1737 | no longer relevant. We don't want to report a watchpoint hit | |
1738 | to the user when the old value and the new value may actually | |
1739 | be completely different objects. */ | |
fa4727a6 DJ |
1740 | b->val = NULL; |
1741 | b->val_valid = 0; | |
60e1c644 PA |
1742 | |
1743 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1744 | expression is stored in the breakpoint object, not in the | |
1745 | locations (re)created below. */ | |
c1fc2657 | 1746 | if (b->cond_string != NULL) |
60e1c644 | 1747 | { |
4d01a485 | 1748 | b->cond_exp.reset (); |
60e1c644 | 1749 | |
c1fc2657 | 1750 | s = b->cond_string; |
1bb9788d | 1751 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1752 | } |
a5606eee | 1753 | } |
a5606eee VP |
1754 | |
1755 | /* If we failed to parse the expression, for example because | |
1756 | it refers to a global variable in a not-yet-loaded shared library, | |
1757 | don't try to insert watchpoint. We don't automatically delete | |
1758 | such watchpoint, though, since failure to parse expression | |
1759 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1760 | if (!target_has_execution) |
2d134ed3 PA |
1761 | { |
1762 | /* Without execution, memory can't change. No use to try and | |
1763 | set watchpoint locations. The watchpoint will be reset when | |
1764 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1765 | if (!can_use_hw_watchpoints) |
1766 | { | |
c1fc2657 SM |
1767 | if (b->ops->works_in_software_mode (b)) |
1768 | b->type = bp_watchpoint; | |
e8369a73 | 1769 | else |
638aa5a1 AB |
1770 | error (_("Can't set read/access watchpoint when " |
1771 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1772 | } |
2d134ed3 PA |
1773 | } |
1774 | else if (within_current_scope && b->exp) | |
a5606eee | 1775 | { |
0cf6dd15 | 1776 | int pc = 0; |
a6535de1 TT |
1777 | std::vector<value_ref_ptr> val_chain; |
1778 | struct value *v, *result, *next; | |
2d134ed3 | 1779 | struct program_space *frame_pspace; |
a5606eee | 1780 | |
4d01a485 | 1781 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1782 | |
a5606eee VP |
1783 | /* Avoid setting b->val if it's already set. The meaning of |
1784 | b->val is 'the last value' user saw, and we should update | |
1785 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1786 | happens, the code that reports it updates b->val directly. |
1787 | We don't keep track of the memory value for masked | |
1788 | watchpoints. */ | |
c1fc2657 | 1789 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1790 | { |
bb9d5f81 | 1791 | if (b->val_bitsize != 0) |
850645cf TT |
1792 | v = extract_bitfield_from_watchpoint_value (b, v); |
1793 | b->val = release_value (v); | |
fa4727a6 DJ |
1794 | b->val_valid = 1; |
1795 | } | |
a5606eee | 1796 | |
2d134ed3 PA |
1797 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1798 | ||
a5606eee | 1799 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1800 | gdb_assert (!val_chain.empty ()); |
1801 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1802 | { |
a6535de1 TT |
1803 | v = iter.get (); |
1804 | ||
a5606eee VP |
1805 | /* If it's a memory location, and GDB actually needed |
1806 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1807 | must watch it. If the first value returned is |
1808 | still lazy, that means an error occurred reading it; | |
1809 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1810 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1811 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1812 | { |
1813 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1814 | |
a5606eee VP |
1815 | /* We only watch structs and arrays if user asked |
1816 | for it explicitly, never if they just happen to | |
1817 | appear in the middle of some value chain. */ | |
fa4727a6 | 1818 | if (v == result |
a5606eee VP |
1819 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1820 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1821 | { | |
1822 | CORE_ADDR addr; | |
f486487f | 1823 | enum target_hw_bp_type type; |
a5606eee | 1824 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1825 | int bitpos = 0, bitsize = 0; |
1826 | ||
1827 | if (value_bitsize (v) != 0) | |
1828 | { | |
1829 | /* Extract the bit parameters out from the bitfield | |
1830 | sub-expression. */ | |
1831 | bitpos = value_bitpos (v); | |
1832 | bitsize = value_bitsize (v); | |
1833 | } | |
1834 | else if (v == result && b->val_bitsize != 0) | |
1835 | { | |
1836 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1837 | lvalue whose bit parameters are saved in the fields | |
1838 | VAL_BITPOS and VAL_BITSIZE. */ | |
1839 | bitpos = b->val_bitpos; | |
1840 | bitsize = b->val_bitsize; | |
1841 | } | |
a5606eee | 1842 | |
42ae5230 | 1843 | addr = value_address (v); |
bb9d5f81 PP |
1844 | if (bitsize != 0) |
1845 | { | |
1846 | /* Skip the bytes that don't contain the bitfield. */ | |
1847 | addr += bitpos / 8; | |
1848 | } | |
1849 | ||
a5606eee | 1850 | type = hw_write; |
c1fc2657 | 1851 | if (b->type == bp_read_watchpoint) |
a5606eee | 1852 | type = hw_read; |
c1fc2657 | 1853 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1854 | type = hw_access; |
3a5c3e22 | 1855 | |
c1fc2657 SM |
1856 | loc = allocate_bp_location (b); |
1857 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1858 | ; |
1859 | *tmp = loc; | |
a6d9a66e | 1860 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1861 | |
1862 | loc->pspace = frame_pspace; | |
f17d9474 | 1863 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1864 | |
1865 | if (bitsize != 0) | |
1866 | { | |
1867 | /* Just cover the bytes that make up the bitfield. */ | |
1868 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1869 | } | |
1870 | else | |
1871 | loc->length = TYPE_LENGTH (value_type (v)); | |
1872 | ||
a5606eee VP |
1873 | loc->watchpoint_type = type; |
1874 | } | |
1875 | } | |
9fa40276 TJB |
1876 | } |
1877 | ||
1878 | /* Change the type of breakpoint between hardware assisted or | |
1879 | an ordinary watchpoint depending on the hardware support | |
1880 | and free hardware slots. REPARSE is set when the inferior | |
1881 | is started. */ | |
a9634178 | 1882 | if (reparse) |
9fa40276 | 1883 | { |
e09342b5 | 1884 | int reg_cnt; |
9fa40276 TJB |
1885 | enum bp_loc_type loc_type; |
1886 | struct bp_location *bl; | |
a5606eee | 1887 | |
a9634178 | 1888 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1889 | |
1890 | if (reg_cnt) | |
9fa40276 TJB |
1891 | { |
1892 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1893 | enum bptype type; |
9fa40276 | 1894 | |
a9634178 TJB |
1895 | /* Use an exact watchpoint when there's only one memory region to be |
1896 | watched, and only one debug register is needed to watch it. */ | |
1897 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1898 | ||
9fa40276 | 1899 | /* We need to determine how many resources are already |
e09342b5 TJB |
1900 | used for all other hardware watchpoints plus this one |
1901 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1902 | this watchpoint in as well. */ |
1903 | ||
1904 | /* If this is a software watchpoint, we try to turn it | |
1905 | to a hardware one -- count resources as if B was of | |
1906 | hardware watchpoint type. */ | |
c1fc2657 | 1907 | type = b->type; |
a1398e0c PA |
1908 | if (type == bp_watchpoint) |
1909 | type = bp_hardware_watchpoint; | |
1910 | ||
1911 | /* This watchpoint may or may not have been placed on | |
1912 | the list yet at this point (it won't be in the list | |
1913 | if we're trying to create it for the first time, | |
1914 | through watch_command), so always account for it | |
1915 | manually. */ | |
1916 | ||
1917 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1918 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1919 | |
1920 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1921 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1922 | |
1923 | target_resources_ok | |
1924 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1925 | if (target_resources_ok <= 0) |
a9634178 | 1926 | { |
c1fc2657 | 1927 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1928 | |
1929 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1930 | error (_("Target does not support this type of " |
1931 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1932 | else if (target_resources_ok < 0 && !sw_mode) |
1933 | error (_("There are not enough available hardware " | |
1934 | "resources for this watchpoint.")); | |
a1398e0c PA |
1935 | |
1936 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1937 | b->type = bp_watchpoint; |
a1398e0c PA |
1938 | } |
1939 | else | |
1940 | { | |
1941 | /* If this was a software watchpoint, we've just | |
1942 | found we have enough resources to turn it to a | |
1943 | hardware watchpoint. Otherwise, this is a | |
1944 | nop. */ | |
c1fc2657 | 1945 | b->type = type; |
a9634178 | 1946 | } |
9fa40276 | 1947 | } |
c1fc2657 | 1948 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1949 | { |
1950 | if (!can_use_hw_watchpoints) | |
1951 | error (_("Can't set read/access watchpoint when " | |
1952 | "hardware watchpoints are disabled.")); | |
1953 | else | |
1954 | error (_("Expression cannot be implemented with " | |
1955 | "read/access watchpoint.")); | |
1956 | } | |
9fa40276 | 1957 | else |
c1fc2657 | 1958 | b->type = bp_watchpoint; |
9fa40276 | 1959 | |
c1fc2657 | 1960 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1961 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1962 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1963 | bl->loc_type = loc_type; |
1964 | } | |
1965 | ||
c7437ca6 PA |
1966 | /* If a software watchpoint is not watching any memory, then the |
1967 | above left it without any location set up. But, | |
1968 | bpstat_stop_status requires a location to be able to report | |
1969 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1970 | if (b->type == bp_watchpoint && b->loc == NULL) |
1971 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1972 | } |
1973 | else if (!within_current_scope) | |
7270d8f2 | 1974 | { |
ac74f770 MS |
1975 | printf_filtered (_("\ |
1976 | Watchpoint %d deleted because the program has left the block\n\ | |
1977 | in which its expression is valid.\n"), | |
c1fc2657 | 1978 | b->number); |
d0fb5eae | 1979 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1980 | } |
a5606eee VP |
1981 | |
1982 | /* Restore the selected frame. */ | |
66076460 DJ |
1983 | if (frame_saved) |
1984 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1985 | } |
1986 | ||
a5606eee | 1987 | |
74960c60 | 1988 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1989 | inserted in the inferior. We don't differentiate the type of BL's owner |
1990 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1991 | breakpoint_ops is not defined, because in insert_bp_location, | |
1992 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1993 | static int |
35df4500 | 1994 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1995 | { |
35df4500 | 1996 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1997 | return 0; |
1998 | ||
35df4500 | 1999 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2000 | return 0; |
2001 | ||
35df4500 | 2002 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2003 | return 0; |
2004 | ||
f8eba3c6 TT |
2005 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2006 | return 0; | |
2007 | ||
56710373 PA |
2008 | /* This is set for example, when we're attached to the parent of a |
2009 | vfork, and have detached from the child. The child is running | |
2010 | free, and we expect it to do an exec or exit, at which point the | |
2011 | OS makes the parent schedulable again (and the target reports | |
2012 | that the vfork is done). Until the child is done with the shared | |
2013 | memory region, do not insert breakpoints in the parent, otherwise | |
2014 | the child could still trip on the parent's breakpoints. Since | |
2015 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2016 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2017 | return 0; |
2018 | ||
31e77af2 | 2019 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2020 | location, except if the breakpoint is a single-step breakpoint, |
2021 | and the breakpoint's thread is the thread which is stepping past | |
2022 | a breakpoint. */ | |
31e77af2 PA |
2023 | if ((bl->loc_type == bp_loc_software_breakpoint |
2024 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2025 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2026 | bl->address) |
2027 | /* The single-step breakpoint may be inserted at the location | |
2028 | we're trying to step if the instruction branches to itself. | |
2029 | However, the instruction won't be executed at all and it may | |
2030 | break the semantics of the instruction, for example, the | |
2031 | instruction is a conditional branch or updates some flags. | |
2032 | We can't fix it unless GDB is able to emulate the instruction | |
2033 | or switch to displaced stepping. */ | |
2034 | && !(bl->owner->type == bp_single_step | |
2035 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2036 | { |
2037 | if (debug_infrun) | |
2038 | { | |
2039 | fprintf_unfiltered (gdb_stdlog, | |
2040 | "infrun: skipping breakpoint: " | |
2041 | "stepping past insn at: %s\n", | |
2042 | paddress (bl->gdbarch, bl->address)); | |
2043 | } | |
2044 | return 0; | |
2045 | } | |
31e77af2 | 2046 | |
963f9c80 PA |
2047 | /* Don't insert watchpoints if we're trying to step past the |
2048 | instruction that triggered one. */ | |
2049 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2050 | && stepping_past_nonsteppable_watchpoint ()) | |
2051 | { | |
2052 | if (debug_infrun) | |
2053 | { | |
2054 | fprintf_unfiltered (gdb_stdlog, | |
2055 | "infrun: stepping past non-steppable watchpoint. " | |
2056 | "skipping watchpoint at %s:%d\n", | |
2057 | paddress (bl->gdbarch, bl->address), | |
2058 | bl->length); | |
2059 | } | |
2060 | return 0; | |
2061 | } | |
2062 | ||
74960c60 VP |
2063 | return 1; |
2064 | } | |
2065 | ||
934709f0 PW |
2066 | /* Same as should_be_inserted but does the check assuming |
2067 | that the location is not duplicated. */ | |
2068 | ||
2069 | static int | |
2070 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2071 | { | |
2072 | int result; | |
2073 | const int save_duplicate = bl->duplicate; | |
2074 | ||
2075 | bl->duplicate = 0; | |
2076 | result = should_be_inserted (bl); | |
2077 | bl->duplicate = save_duplicate; | |
2078 | return result; | |
2079 | } | |
2080 | ||
b775012e LM |
2081 | /* Parses a conditional described by an expression COND into an |
2082 | agent expression bytecode suitable for evaluation | |
2083 | by the bytecode interpreter. Return NULL if there was | |
2084 | any error during parsing. */ | |
2085 | ||
833177a4 | 2086 | static agent_expr_up |
b775012e LM |
2087 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2088 | { | |
833177a4 | 2089 | if (cond == NULL) |
b775012e LM |
2090 | return NULL; |
2091 | ||
833177a4 PA |
2092 | agent_expr_up aexpr; |
2093 | ||
b775012e LM |
2094 | /* We don't want to stop processing, so catch any errors |
2095 | that may show up. */ | |
492d29ea | 2096 | TRY |
b775012e | 2097 | { |
036e657b | 2098 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2099 | } |
2100 | ||
492d29ea | 2101 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2102 | { |
2103 | /* If we got here, it means the condition could not be parsed to a valid | |
2104 | bytecode expression and thus can't be evaluated on the target's side. | |
2105 | It's no use iterating through the conditions. */ | |
b775012e | 2106 | } |
492d29ea | 2107 | END_CATCH |
b775012e LM |
2108 | |
2109 | /* We have a valid agent expression. */ | |
2110 | return aexpr; | |
2111 | } | |
2112 | ||
2113 | /* Based on location BL, create a list of breakpoint conditions to be | |
2114 | passed on to the target. If we have duplicated locations with different | |
2115 | conditions, we will add such conditions to the list. The idea is that the | |
2116 | target will evaluate the list of conditions and will only notify GDB when | |
2117 | one of them is true. */ | |
2118 | ||
2119 | static void | |
2120 | build_target_condition_list (struct bp_location *bl) | |
2121 | { | |
2122 | struct bp_location **locp = NULL, **loc2p; | |
2123 | int null_condition_or_parse_error = 0; | |
2124 | int modified = bl->needs_update; | |
2125 | struct bp_location *loc; | |
2126 | ||
8b4f3082 | 2127 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2128 | bl->target_info.conditions.clear (); |
8b4f3082 | 2129 | |
b775012e LM |
2130 | /* This is only meaningful if the target is |
2131 | evaluating conditions and if the user has | |
2132 | opted for condition evaluation on the target's | |
2133 | side. */ | |
2134 | if (gdb_evaluates_breakpoint_condition_p () | |
2135 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2136 | return; | |
2137 | ||
2138 | /* Do a first pass to check for locations with no assigned | |
2139 | conditions or conditions that fail to parse to a valid agent expression | |
2140 | bytecode. If any of these happen, then it's no use to send conditions | |
2141 | to the target since this location will always trigger and generate a | |
2142 | response back to GDB. */ | |
2143 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2144 | { | |
2145 | loc = (*loc2p); | |
2146 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2147 | { | |
2148 | if (modified) | |
2149 | { | |
b775012e LM |
2150 | /* Re-parse the conditions since something changed. In that |
2151 | case we already freed the condition bytecodes (see | |
2152 | force_breakpoint_reinsertion). We just | |
2153 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2154 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2155 | loc->cond.get ()); | |
b775012e LM |
2156 | } |
2157 | ||
2158 | /* If we have a NULL bytecode expression, it means something | |
2159 | went wrong or we have a null condition expression. */ | |
2160 | if (!loc->cond_bytecode) | |
2161 | { | |
2162 | null_condition_or_parse_error = 1; | |
2163 | break; | |
2164 | } | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | /* If any of these happened, it means we will have to evaluate the conditions | |
2169 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2170 | for all the other duplicate locations, thus we free all of them here. | |
2171 | ||
2172 | This is so we have a finer control over which locations' conditions are | |
2173 | being evaluated by GDB or the remote stub. */ | |
2174 | if (null_condition_or_parse_error) | |
2175 | { | |
2176 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2177 | { | |
2178 | loc = (*loc2p); | |
2179 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2180 | { | |
2181 | /* Only go as far as the first NULL bytecode is | |
2182 | located. */ | |
2183 | if (!loc->cond_bytecode) | |
2184 | return; | |
2185 | ||
833177a4 | 2186 | loc->cond_bytecode.reset (); |
b775012e LM |
2187 | } |
2188 | } | |
2189 | } | |
2190 | ||
2191 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2192 | for this location's address. */ | |
2193 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2194 | { | |
2195 | loc = (*loc2p); | |
2196 | if (loc->cond | |
2197 | && is_breakpoint (loc->owner) | |
2198 | && loc->pspace->num == bl->pspace->num | |
2199 | && loc->owner->enable_state == bp_enabled | |
2200 | && loc->enabled) | |
3cde5c42 PA |
2201 | { |
2202 | /* Add the condition to the vector. This will be used later | |
2203 | to send the conditions to the target. */ | |
2204 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2205 | } | |
b775012e LM |
2206 | } |
2207 | ||
2208 | return; | |
2209 | } | |
2210 | ||
d3ce09f5 SS |
2211 | /* Parses a command described by string CMD into an agent expression |
2212 | bytecode suitable for evaluation by the bytecode interpreter. | |
2213 | Return NULL if there was any error during parsing. */ | |
2214 | ||
833177a4 | 2215 | static agent_expr_up |
d3ce09f5 SS |
2216 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2217 | { | |
bbc13ae3 KS |
2218 | const char *cmdrest; |
2219 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2220 | struct gdbarch *gdbarch = get_current_arch (); |
2221 | ||
833177a4 | 2222 | if (cmd == NULL) |
d3ce09f5 SS |
2223 | return NULL; |
2224 | ||
2225 | cmdrest = cmd; | |
2226 | ||
2227 | if (*cmdrest == ',') | |
2228 | ++cmdrest; | |
f1735a53 | 2229 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2230 | |
2231 | if (*cmdrest++ != '"') | |
2232 | error (_("No format string following the location")); | |
2233 | ||
2234 | format_start = cmdrest; | |
2235 | ||
8e481c3b | 2236 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2237 | |
2238 | format_end = cmdrest; | |
2239 | ||
2240 | if (*cmdrest++ != '"') | |
2241 | error (_("Bad format string, non-terminated '\"'.")); | |
2242 | ||
f1735a53 | 2243 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2244 | |
2245 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2246 | error (_("Invalid argument syntax")); | |
2247 | ||
2248 | if (*cmdrest == ',') | |
2249 | cmdrest++; | |
f1735a53 | 2250 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2251 | |
2252 | /* For each argument, make an expression. */ | |
2253 | ||
8e481c3b | 2254 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2255 | while (*cmdrest != '\0') |
2256 | { | |
bbc13ae3 | 2257 | const char *cmd1; |
d3ce09f5 SS |
2258 | |
2259 | cmd1 = cmdrest; | |
4d01a485 | 2260 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2261 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2262 | cmdrest = cmd1; |
2263 | if (*cmdrest == ',') | |
2264 | ++cmdrest; | |
2265 | } | |
2266 | ||
833177a4 PA |
2267 | agent_expr_up aexpr; |
2268 | ||
d3ce09f5 SS |
2269 | /* We don't want to stop processing, so catch any errors |
2270 | that may show up. */ | |
492d29ea | 2271 | TRY |
d3ce09f5 | 2272 | { |
036e657b JB |
2273 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2274 | format_start, format_end - format_start, | |
8e481c3b | 2275 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2276 | } |
492d29ea | 2277 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2278 | { |
2279 | /* If we got here, it means the command could not be parsed to a valid | |
2280 | bytecode expression and thus can't be evaluated on the target's side. | |
2281 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2282 | } |
492d29ea PA |
2283 | END_CATCH |
2284 | ||
d3ce09f5 SS |
2285 | /* We have a valid agent expression, return it. */ |
2286 | return aexpr; | |
2287 | } | |
2288 | ||
2289 | /* Based on location BL, create a list of breakpoint commands to be | |
2290 | passed on to the target. If we have duplicated locations with | |
2291 | different commands, we will add any such to the list. */ | |
2292 | ||
2293 | static void | |
2294 | build_target_command_list (struct bp_location *bl) | |
2295 | { | |
2296 | struct bp_location **locp = NULL, **loc2p; | |
2297 | int null_command_or_parse_error = 0; | |
2298 | int modified = bl->needs_update; | |
2299 | struct bp_location *loc; | |
2300 | ||
3cde5c42 PA |
2301 | /* Clear commands left over from a previous insert. */ |
2302 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2303 | |
41fac0cf | 2304 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2305 | return; |
2306 | ||
41fac0cf PA |
2307 | /* For now, limit to agent-style dprintf breakpoints. */ |
2308 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2309 | return; |
2310 | ||
41fac0cf PA |
2311 | /* For now, if we have any duplicate location that isn't a dprintf, |
2312 | don't install the target-side commands, as that would make the | |
2313 | breakpoint not be reported to the core, and we'd lose | |
2314 | control. */ | |
2315 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2316 | { | |
2317 | loc = (*loc2p); | |
2318 | if (is_breakpoint (loc->owner) | |
2319 | && loc->pspace->num == bl->pspace->num | |
2320 | && loc->owner->type != bp_dprintf) | |
2321 | return; | |
2322 | } | |
2323 | ||
d3ce09f5 SS |
2324 | /* Do a first pass to check for locations with no assigned |
2325 | conditions or conditions that fail to parse to a valid agent expression | |
2326 | bytecode. If any of these happen, then it's no use to send conditions | |
2327 | to the target since this location will always trigger and generate a | |
2328 | response back to GDB. */ | |
2329 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2330 | { | |
2331 | loc = (*loc2p); | |
2332 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2333 | { | |
2334 | if (modified) | |
2335 | { | |
d3ce09f5 SS |
2336 | /* Re-parse the commands since something changed. In that |
2337 | case we already freed the command bytecodes (see | |
2338 | force_breakpoint_reinsertion). We just | |
2339 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2340 | loc->cmd_bytecode |
2341 | = parse_cmd_to_aexpr (bl->address, | |
2342 | loc->owner->extra_string); | |
d3ce09f5 SS |
2343 | } |
2344 | ||
2345 | /* If we have a NULL bytecode expression, it means something | |
2346 | went wrong or we have a null command expression. */ | |
2347 | if (!loc->cmd_bytecode) | |
2348 | { | |
2349 | null_command_or_parse_error = 1; | |
2350 | break; | |
2351 | } | |
2352 | } | |
2353 | } | |
2354 | ||
2355 | /* If anything failed, then we're not doing target-side commands, | |
2356 | and so clean up. */ | |
2357 | if (null_command_or_parse_error) | |
2358 | { | |
2359 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2360 | { | |
2361 | loc = (*loc2p); | |
2362 | if (is_breakpoint (loc->owner) | |
2363 | && loc->pspace->num == bl->pspace->num) | |
2364 | { | |
2365 | /* Only go as far as the first NULL bytecode is | |
2366 | located. */ | |
40fb6c5e | 2367 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2368 | return; |
2369 | ||
833177a4 | 2370 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2371 | } |
2372 | } | |
2373 | } | |
2374 | ||
2375 | /* No NULL commands or failed bytecode generation. Build a command list | |
2376 | for this location's address. */ | |
2377 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2378 | { | |
2379 | loc = (*loc2p); | |
2380 | if (loc->owner->extra_string | |
2381 | && is_breakpoint (loc->owner) | |
2382 | && loc->pspace->num == bl->pspace->num | |
2383 | && loc->owner->enable_state == bp_enabled | |
2384 | && loc->enabled) | |
3cde5c42 PA |
2385 | { |
2386 | /* Add the command to the vector. This will be used later | |
2387 | to send the commands to the target. */ | |
2388 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2389 | } | |
d3ce09f5 SS |
2390 | } |
2391 | ||
2392 | bl->target_info.persist = 0; | |
2393 | /* Maybe flag this location as persistent. */ | |
2394 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2395 | bl->target_info.persist = 1; | |
2396 | } | |
2397 | ||
833b7ab5 YQ |
2398 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2399 | of breakpoint according to ADDR except single-step breakpoint. | |
2400 | Get the kind of single-step breakpoint according to the current | |
2401 | registers state. */ | |
cd6c3b4f YQ |
2402 | |
2403 | static int | |
2404 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2405 | { | |
833b7ab5 YQ |
2406 | if (bl->owner->type == bp_single_step) |
2407 | { | |
2408 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2409 | struct regcache *regcache; | |
2410 | ||
00431a78 | 2411 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2412 | |
2413 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2414 | regcache, addr); | |
2415 | } | |
2416 | else | |
2417 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2418 | } |
2419 | ||
35df4500 TJB |
2420 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2421 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2422 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2423 | Returns 0 for success, 1 if the bp_location type is not supported or |
2424 | -1 for failure. | |
879bfdc2 | 2425 | |
4a64f543 MS |
2426 | NOTE drow/2003-09-09: This routine could be broken down to an |
2427 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2428 | static int |
35df4500 | 2429 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2430 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2431 | int *disabled_breaks, |
dd61ec5c MW |
2432 | int *hw_breakpoint_error, |
2433 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2434 | { |
688fca4f | 2435 | gdb_exception bp_excpt = exception_none; |
879bfdc2 | 2436 | |
b775012e | 2437 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2438 | return 0; |
2439 | ||
35c63cd8 JB |
2440 | /* Note we don't initialize bl->target_info, as that wipes out |
2441 | the breakpoint location's shadow_contents if the breakpoint | |
2442 | is still inserted at that location. This in turn breaks | |
2443 | target_read_memory which depends on these buffers when | |
2444 | a memory read is requested at the breakpoint location: | |
2445 | Once the target_info has been wiped, we fail to see that | |
2446 | we have a breakpoint inserted at that address and thus | |
2447 | read the breakpoint instead of returning the data saved in | |
2448 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2449 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2450 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2451 | bl->target_info.length = bl->length; |
8181d85f | 2452 | |
b775012e LM |
2453 | /* When working with target-side conditions, we must pass all the conditions |
2454 | for the same breakpoint address down to the target since GDB will not | |
2455 | insert those locations. With a list of breakpoint conditions, the target | |
2456 | can decide when to stop and notify GDB. */ | |
2457 | ||
2458 | if (is_breakpoint (bl->owner)) | |
2459 | { | |
2460 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2461 | build_target_command_list (bl); |
2462 | /* Reset the modification marker. */ | |
b775012e LM |
2463 | bl->needs_update = 0; |
2464 | } | |
2465 | ||
35df4500 TJB |
2466 | if (bl->loc_type == bp_loc_software_breakpoint |
2467 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2468 | { |
35df4500 | 2469 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2470 | { |
2471 | /* If the explicitly specified breakpoint type | |
2472 | is not hardware breakpoint, check the memory map to see | |
2473 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2474 | |
765dc015 VP |
2475 | Two important cases are: |
2476 | - location type is not hardware breakpoint, memory | |
2477 | is readonly. We change the type of the location to | |
2478 | hardware breakpoint. | |
4a64f543 MS |
2479 | - location type is hardware breakpoint, memory is |
2480 | read-write. This means we've previously made the | |
2481 | location hardware one, but then the memory map changed, | |
2482 | so we undo. | |
765dc015 | 2483 | |
4a64f543 MS |
2484 | When breakpoints are removed, remove_breakpoints will use |
2485 | location types we've just set here, the only possible | |
2486 | problem is that memory map has changed during running | |
2487 | program, but it's not going to work anyway with current | |
2488 | gdb. */ | |
765dc015 | 2489 | struct mem_region *mr |
0d5ed153 | 2490 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2491 | |
2492 | if (mr) | |
2493 | { | |
2494 | if (automatic_hardware_breakpoints) | |
2495 | { | |
765dc015 VP |
2496 | enum bp_loc_type new_type; |
2497 | ||
2498 | if (mr->attrib.mode != MEM_RW) | |
2499 | new_type = bp_loc_hardware_breakpoint; | |
2500 | else | |
2501 | new_type = bp_loc_software_breakpoint; | |
2502 | ||
35df4500 | 2503 | if (new_type != bl->loc_type) |
765dc015 VP |
2504 | { |
2505 | static int said = 0; | |
cc59ec59 | 2506 | |
35df4500 | 2507 | bl->loc_type = new_type; |
765dc015 VP |
2508 | if (!said) |
2509 | { | |
3e43a32a MS |
2510 | fprintf_filtered (gdb_stdout, |
2511 | _("Note: automatically using " | |
2512 | "hardware breakpoints for " | |
2513 | "read-only addresses.\n")); | |
765dc015 VP |
2514 | said = 1; |
2515 | } | |
2516 | } | |
2517 | } | |
35df4500 | 2518 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2519 | && mr->attrib.mode != MEM_RW) |
2520 | { | |
2521 | fprintf_unfiltered (tmp_error_stream, | |
2522 | _("Cannot insert breakpoint %d.\n" | |
2523 | "Cannot set software breakpoint " | |
2524 | "at read-only address %s\n"), | |
2525 | bl->owner->number, | |
2526 | paddress (bl->gdbarch, bl->address)); | |
2527 | return 1; | |
2528 | } | |
765dc015 VP |
2529 | } |
2530 | } | |
2531 | ||
879bfdc2 DJ |
2532 | /* First check to see if we have to handle an overlay. */ |
2533 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2534 | || bl->section == NULL |
2535 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2536 | { |
2537 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2538 | TRY |
dd61ec5c | 2539 | { |
0000e5cc PA |
2540 | int val; |
2541 | ||
dd61ec5c | 2542 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2543 | if (val) |
688fca4f | 2544 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2545 | } |
492d29ea | 2546 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2547 | { |
688fca4f | 2548 | bp_excpt = e; |
dd61ec5c | 2549 | } |
492d29ea | 2550 | END_CATCH |
879bfdc2 DJ |
2551 | } |
2552 | else | |
2553 | { | |
4a64f543 | 2554 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2555 | Shall we set a breakpoint at the LMA? */ |
2556 | if (!overlay_events_enabled) | |
2557 | { | |
2558 | /* Yes -- overlay event support is not active, | |
2559 | so we must try to set a breakpoint at the LMA. | |
2560 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2561 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2562 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2563 | bl->owner->number); |
879bfdc2 DJ |
2564 | else |
2565 | { | |
35df4500 TJB |
2566 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2567 | bl->section); | |
879bfdc2 | 2568 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2569 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2570 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2571 | |
2572 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2573 | TRY |
0000e5cc PA |
2574 | { |
2575 | int val; | |
2576 | ||
579c6ad9 | 2577 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2578 | = breakpoint_kind (bl, &addr); |
2579 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2580 | val = target_insert_breakpoint (bl->gdbarch, |
2581 | &bl->overlay_target_info); | |
2582 | if (val) | |
688fca4f PA |
2583 | bp_excpt |
2584 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2585 | } |
492d29ea | 2586 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc | 2587 | { |
688fca4f | 2588 | bp_excpt = e; |
0000e5cc | 2589 | } |
492d29ea | 2590 | END_CATCH |
0000e5cc | 2591 | |
688fca4f | 2592 | if (bp_excpt.reason != 0) |
99361f52 | 2593 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2594 | "Overlay breakpoint %d " |
2595 | "failed: in ROM?\n", | |
35df4500 | 2596 | bl->owner->number); |
879bfdc2 DJ |
2597 | } |
2598 | } | |
2599 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2600 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2601 | { |
2602 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2603 | TRY |
dd61ec5c | 2604 | { |
0000e5cc PA |
2605 | int val; |
2606 | ||
dd61ec5c | 2607 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2608 | if (val) |
688fca4f | 2609 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2610 | } |
492d29ea | 2611 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2612 | { |
688fca4f | 2613 | bp_excpt = e; |
dd61ec5c | 2614 | } |
492d29ea | 2615 | END_CATCH |
879bfdc2 DJ |
2616 | } |
2617 | else | |
2618 | { | |
2619 | /* No. This breakpoint will not be inserted. | |
2620 | No error, but do not mark the bp as 'inserted'. */ | |
2621 | return 0; | |
2622 | } | |
2623 | } | |
2624 | ||
688fca4f | 2625 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2626 | { |
2627 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2628 | |
2629 | /* In some cases, we might not be able to insert a | |
2630 | breakpoint in a shared library that has already been | |
2631 | removed, but we have not yet processed the shlib unload | |
2632 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2633 | breakpoint insertion themselves can't tell why the |
2634 | breakpoint insertion failed (e.g., the remote target | |
2635 | doesn't define error codes), so we must treat generic | |
2636 | errors as memory errors. */ | |
688fca4f PA |
2637 | if (bp_excpt.reason == RETURN_ERROR |
2638 | && (bp_excpt.error == GENERIC_ERROR | |
2639 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2640 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2641 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2642 | || shared_objfile_contains_address_p (bl->pspace, |
2643 | bl->address))) | |
879bfdc2 | 2644 | { |
4a64f543 | 2645 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2646 | bl->shlib_disabled = 1; |
76727919 | 2647 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2648 | if (!*disabled_breaks) |
2649 | { | |
2650 | fprintf_unfiltered (tmp_error_stream, | |
2651 | "Cannot insert breakpoint %d.\n", | |
2652 | bl->owner->number); | |
2653 | fprintf_unfiltered (tmp_error_stream, | |
2654 | "Temporarily disabling shared " | |
2655 | "library breakpoints:\n"); | |
2656 | } | |
2657 | *disabled_breaks = 1; | |
879bfdc2 | 2658 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2659 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2660 | return 0; |
879bfdc2 DJ |
2661 | } |
2662 | else | |
879bfdc2 | 2663 | { |
35df4500 | 2664 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2665 | { |
0000e5cc | 2666 | *hw_breakpoint_error = 1; |
688fca4f | 2667 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2668 | fprintf_unfiltered (tmp_error_stream, |
2669 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2670 | bl->owner->number, |
2671 | bp_excpt.message ? ":" : ".\n"); | |
2672 | if (bp_excpt.message != NULL) | |
2673 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
2674 | bp_excpt.message); | |
879bfdc2 DJ |
2675 | } |
2676 | else | |
2677 | { | |
688fca4f | 2678 | if (bp_excpt.message == NULL) |
0000e5cc | 2679 | { |
1ccbe998 | 2680 | std::string message |
0000e5cc PA |
2681 | = memory_error_message (TARGET_XFER_E_IO, |
2682 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2683 | |
2684 | fprintf_unfiltered (tmp_error_stream, | |
2685 | "Cannot insert breakpoint %d.\n" | |
2686 | "%s\n", | |
1ccbe998 | 2687 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2688 | } |
2689 | else | |
2690 | { | |
2691 | fprintf_unfiltered (tmp_error_stream, | |
2692 | "Cannot insert breakpoint %d: %s\n", | |
2693 | bl->owner->number, | |
688fca4f | 2694 | bp_excpt.message); |
0000e5cc | 2695 | } |
879bfdc2 | 2696 | } |
0000e5cc | 2697 | return 1; |
879bfdc2 DJ |
2698 | |
2699 | } | |
2700 | } | |
2701 | else | |
35df4500 | 2702 | bl->inserted = 1; |
879bfdc2 | 2703 | |
0000e5cc | 2704 | return 0; |
879bfdc2 DJ |
2705 | } |
2706 | ||
35df4500 | 2707 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2708 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2709 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2710 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2711 | { |
0000e5cc PA |
2712 | int val; |
2713 | ||
77b06cd7 TJB |
2714 | gdb_assert (bl->owner->ops != NULL |
2715 | && bl->owner->ops->insert_location != NULL); | |
2716 | ||
2717 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2718 | |
2719 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2720 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2721 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2722 | { |
2723 | struct bp_location *loc, **loc_temp; | |
2724 | ||
2725 | /* But don't try to insert it, if there's already another | |
2726 | hw_access location that would be considered a duplicate | |
2727 | of this one. */ | |
2728 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2729 | if (loc != bl |
85d721b8 | 2730 | && loc->watchpoint_type == hw_access |
35df4500 | 2731 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2732 | { |
35df4500 TJB |
2733 | bl->duplicate = 1; |
2734 | bl->inserted = 1; | |
2735 | bl->target_info = loc->target_info; | |
2736 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2737 | val = 0; |
2738 | break; | |
2739 | } | |
2740 | ||
2741 | if (val == 1) | |
2742 | { | |
77b06cd7 TJB |
2743 | bl->watchpoint_type = hw_access; |
2744 | val = bl->owner->ops->insert_location (bl); | |
2745 | ||
2746 | if (val) | |
2747 | /* Back to the original value. */ | |
2748 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2749 | } |
2750 | } | |
2751 | ||
35df4500 | 2752 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2753 | } |
2754 | ||
35df4500 | 2755 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2756 | { |
0000e5cc PA |
2757 | int val; |
2758 | ||
77b06cd7 TJB |
2759 | gdb_assert (bl->owner->ops != NULL |
2760 | && bl->owner->ops->insert_location != NULL); | |
2761 | ||
2762 | val = bl->owner->ops->insert_location (bl); | |
2763 | if (val) | |
2764 | { | |
2765 | bl->owner->enable_state = bp_disabled; | |
2766 | ||
2767 | if (val == 1) | |
2768 | warning (_("\ | |
2769 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2770 | of catchpoint."), bl->owner->number); | |
2771 | else | |
2772 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2773 | } | |
2774 | ||
2775 | bl->inserted = (val == 0); | |
1640b821 DJ |
2776 | |
2777 | /* We've already printed an error message if there was a problem | |
2778 | inserting this catchpoint, and we've disabled the catchpoint, | |
2779 | so just return success. */ | |
2780 | return 0; | |
879bfdc2 DJ |
2781 | } |
2782 | ||
2783 | return 0; | |
2784 | } | |
2785 | ||
6c95b8df PA |
2786 | /* This function is called when program space PSPACE is about to be |
2787 | deleted. It takes care of updating breakpoints to not reference | |
2788 | PSPACE anymore. */ | |
2789 | ||
2790 | void | |
2791 | breakpoint_program_space_exit (struct program_space *pspace) | |
2792 | { | |
2793 | struct breakpoint *b, *b_temp; | |
876fa593 | 2794 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2795 | |
2796 | /* Remove any breakpoint that was set through this program space. */ | |
2797 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2798 | { | |
2799 | if (b->pspace == pspace) | |
2800 | delete_breakpoint (b); | |
2801 | } | |
2802 | ||
2803 | /* Breakpoints set through other program spaces could have locations | |
2804 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2805 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2806 | { |
2807 | struct bp_location *tmp; | |
2808 | ||
2809 | if (loc->pspace == pspace) | |
2810 | { | |
2bdf28a0 | 2811 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2812 | if (loc->owner->loc == loc) |
2813 | loc->owner->loc = loc->next; | |
2814 | else | |
2815 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2816 | if (tmp->next == loc) | |
2817 | { | |
2818 | tmp->next = loc->next; | |
2819 | break; | |
2820 | } | |
2821 | } | |
2822 | } | |
2823 | ||
2824 | /* Now update the global location list to permanently delete the | |
2825 | removed locations above. */ | |
44702360 | 2826 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2827 | } |
2828 | ||
74960c60 VP |
2829 | /* Make sure all breakpoints are inserted in inferior. |
2830 | Throws exception on any error. | |
2831 | A breakpoint that is already inserted won't be inserted | |
2832 | again, so calling this function twice is safe. */ | |
2833 | void | |
2834 | insert_breakpoints (void) | |
2835 | { | |
2836 | struct breakpoint *bpt; | |
2837 | ||
2838 | ALL_BREAKPOINTS (bpt) | |
2839 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2840 | { |
2841 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2842 | ||
2843 | update_watchpoint (w, 0 /* don't reparse. */); | |
2844 | } | |
74960c60 | 2845 | |
04086b45 PA |
2846 | /* Updating watchpoints creates new locations, so update the global |
2847 | location list. Explicitly tell ugll to insert locations and | |
2848 | ignore breakpoints_always_inserted_mode. */ | |
2849 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2850 | } |
2851 | ||
20388dd6 YQ |
2852 | /* Invoke CALLBACK for each of bp_location. */ |
2853 | ||
2854 | void | |
2855 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2856 | { | |
2857 | struct bp_location *loc, **loc_tmp; | |
2858 | ||
2859 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2860 | { | |
2861 | callback (loc, NULL); | |
2862 | } | |
2863 | } | |
2864 | ||
b775012e LM |
2865 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2866 | target. It is the case with deleting and disabling of breakpoints when using | |
2867 | always-inserted mode. */ | |
2868 | ||
2869 | static void | |
2870 | update_inserted_breakpoint_locations (void) | |
2871 | { | |
2872 | struct bp_location *bl, **blp_tmp; | |
2873 | int error_flag = 0; | |
2874 | int val = 0; | |
2875 | int disabled_breaks = 0; | |
2876 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2877 | int hw_bp_details_reported = 0; |
b775012e | 2878 | |
d7e74731 | 2879 | string_file tmp_error_stream; |
b775012e LM |
2880 | |
2881 | /* Explicitly mark the warning -- this will only be printed if | |
2882 | there was an error. */ | |
d7e74731 | 2883 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2884 | |
5ed8105e | 2885 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2886 | |
2887 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2888 | { | |
2889 | /* We only want to update software breakpoints and hardware | |
2890 | breakpoints. */ | |
2891 | if (!is_breakpoint (bl->owner)) | |
2892 | continue; | |
2893 | ||
2894 | /* We only want to update locations that are already inserted | |
2895 | and need updating. This is to avoid unwanted insertion during | |
2896 | deletion of breakpoints. */ | |
2897 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2898 | continue; | |
2899 | ||
2900 | switch_to_program_space_and_thread (bl->pspace); | |
2901 | ||
2902 | /* For targets that support global breakpoints, there's no need | |
2903 | to select an inferior to insert breakpoint to. In fact, even | |
2904 | if we aren't attached to any process yet, we should still | |
2905 | insert breakpoints. */ | |
f5656ead | 2906 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2907 | && ptid_equal (inferior_ptid, null_ptid)) |
2908 | continue; | |
2909 | ||
d7e74731 | 2910 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2911 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2912 | if (val) |
2913 | error_flag = val; | |
2914 | } | |
2915 | ||
2916 | if (error_flag) | |
2917 | { | |
223ffa71 | 2918 | target_terminal::ours_for_output (); |
b775012e LM |
2919 | error_stream (tmp_error_stream); |
2920 | } | |
b775012e LM |
2921 | } |
2922 | ||
c30eee59 | 2923 | /* Used when starting or continuing the program. */ |
c906108c | 2924 | |
74960c60 VP |
2925 | static void |
2926 | insert_breakpoint_locations (void) | |
c906108c | 2927 | { |
a5606eee | 2928 | struct breakpoint *bpt; |
35df4500 | 2929 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2930 | int error_flag = 0; |
c906108c | 2931 | int val = 0; |
3fbb6ffa | 2932 | int disabled_breaks = 0; |
81d0cc19 | 2933 | int hw_breakpoint_error = 0; |
dd61ec5c | 2934 | int hw_bp_error_explained_already = 0; |
c906108c | 2935 | |
d7e74731 PA |
2936 | string_file tmp_error_stream; |
2937 | ||
81d0cc19 GS |
2938 | /* Explicitly mark the warning -- this will only be printed if |
2939 | there was an error. */ | |
d7e74731 | 2940 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2941 | |
5ed8105e | 2942 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2943 | |
35df4500 | 2944 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2945 | { |
b775012e | 2946 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2947 | continue; |
2948 | ||
4a64f543 MS |
2949 | /* There is no point inserting thread-specific breakpoints if |
2950 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2951 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2952 | if (bl->owner->thread != -1 |
5d5658a1 | 2953 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2954 | continue; |
2955 | ||
35df4500 | 2956 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2957 | |
2958 | /* For targets that support global breakpoints, there's no need | |
2959 | to select an inferior to insert breakpoint to. In fact, even | |
2960 | if we aren't attached to any process yet, we should still | |
2961 | insert breakpoints. */ | |
f5656ead | 2962 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2963 | && ptid_equal (inferior_ptid, null_ptid)) |
2964 | continue; | |
2965 | ||
d7e74731 | 2966 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2967 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2968 | if (val) |
eacd795a | 2969 | error_flag = val; |
879bfdc2 | 2970 | } |
c906108c | 2971 | |
4a64f543 MS |
2972 | /* If we failed to insert all locations of a watchpoint, remove |
2973 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2974 | ALL_BREAKPOINTS (bpt) |
2975 | { | |
2976 | int some_failed = 0; | |
2977 | struct bp_location *loc; | |
2978 | ||
2979 | if (!is_hardware_watchpoint (bpt)) | |
2980 | continue; | |
2981 | ||
d6b74ac4 | 2982 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2983 | continue; |
74960c60 VP |
2984 | |
2985 | if (bpt->disposition == disp_del_at_next_stop) | |
2986 | continue; | |
a5606eee VP |
2987 | |
2988 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2989 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2990 | { |
2991 | some_failed = 1; | |
2992 | break; | |
2993 | } | |
2994 | if (some_failed) | |
2995 | { | |
2996 | for (loc = bpt->loc; loc; loc = loc->next) | |
2997 | if (loc->inserted) | |
834c0d03 | 2998 | remove_breakpoint (loc); |
a5606eee VP |
2999 | |
3000 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3001 | tmp_error_stream.printf ("Could not insert " |
3002 | "hardware watchpoint %d.\n", | |
3003 | bpt->number); | |
eacd795a | 3004 | error_flag = -1; |
a5606eee VP |
3005 | } |
3006 | } | |
3007 | ||
eacd795a | 3008 | if (error_flag) |
81d0cc19 GS |
3009 | { |
3010 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3011 | message about possibly exhausted resources. */ | |
dd61ec5c | 3012 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3013 | { |
d7e74731 | 3014 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3015 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3016 | } |
223ffa71 | 3017 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3018 | error_stream (tmp_error_stream); |
3019 | } | |
c906108c SS |
3020 | } |
3021 | ||
c30eee59 TJB |
3022 | /* Used when the program stops. |
3023 | Returns zero if successful, or non-zero if there was a problem | |
3024 | removing a breakpoint location. */ | |
3025 | ||
c906108c | 3026 | int |
fba45db2 | 3027 | remove_breakpoints (void) |
c906108c | 3028 | { |
35df4500 | 3029 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3030 | int val = 0; |
c906108c | 3031 | |
35df4500 | 3032 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3033 | { |
1e4d1764 | 3034 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3035 | val |= remove_breakpoint (bl); |
c5aa993b | 3036 | } |
3a1bae8e | 3037 | return val; |
c906108c SS |
3038 | } |
3039 | ||
49fa26b0 PA |
3040 | /* When a thread exits, remove breakpoints that are related to |
3041 | that thread. */ | |
3042 | ||
3043 | static void | |
3044 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3045 | { | |
3046 | struct breakpoint *b, *b_tmp; | |
3047 | ||
3048 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3049 | { | |
5d5658a1 | 3050 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3051 | { |
3052 | b->disposition = disp_del_at_next_stop; | |
3053 | ||
3054 | printf_filtered (_("\ | |
43792cf0 PA |
3055 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3056 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3057 | |
3058 | /* Hide it from the user. */ | |
3059 | b->number = 0; | |
3060 | } | |
3061 | } | |
3062 | } | |
3063 | ||
00431a78 | 3064 | /* Remove breakpoints of inferior INF. */ |
6c95b8df PA |
3065 | |
3066 | int | |
00431a78 | 3067 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3068 | { |
35df4500 | 3069 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3070 | int val; |
6c95b8df | 3071 | |
35df4500 | 3072 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3073 | { |
35df4500 | 3074 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3075 | continue; |
3076 | ||
fc126975 | 3077 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3078 | { |
834c0d03 | 3079 | val = remove_breakpoint (bl); |
6c95b8df PA |
3080 | if (val != 0) |
3081 | return val; | |
3082 | } | |
3083 | } | |
3084 | return 0; | |
3085 | } | |
3086 | ||
e58b0e63 PA |
3087 | static int internal_breakpoint_number = -1; |
3088 | ||
84f4c1fe PM |
3089 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3090 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3091 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3092 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3093 | breakpoint_count and that value incremented. Internal breakpoints |
3094 | do not set the internal var bpnum. */ | |
3095 | static void | |
3096 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3097 | { | |
3098 | if (internal) | |
3099 | b->number = internal_breakpoint_number--; | |
3100 | else | |
3101 | { | |
3102 | set_breakpoint_count (breakpoint_count + 1); | |
3103 | b->number = breakpoint_count; | |
3104 | } | |
3105 | } | |
3106 | ||
e62c965a | 3107 | static struct breakpoint * |
a6d9a66e | 3108 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3109 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3110 | const struct breakpoint_ops *ops) |
e62c965a | 3111 | { |
51abb421 | 3112 | symtab_and_line sal; |
e62c965a PP |
3113 | sal.pc = address; |
3114 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3115 | sal.pspace = current_program_space; |
e62c965a | 3116 | |
51abb421 | 3117 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3118 | b->number = internal_breakpoint_number--; |
3119 | b->disposition = disp_donttouch; | |
3120 | ||
3121 | return b; | |
3122 | } | |
3123 | ||
17450429 PP |
3124 | static const char *const longjmp_names[] = |
3125 | { | |
3126 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3127 | }; | |
3128 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3129 | ||
3130 | /* Per-objfile data private to breakpoint.c. */ | |
3131 | struct breakpoint_objfile_data | |
3132 | { | |
3133 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3134 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3135 | |
3136 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3137 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3138 | |
28106bc2 | 3139 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3140 | int longjmp_searched = 0; |
28106bc2 | 3141 | |
45461e0d SM |
3142 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3143 | references. */ | |
3144 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3145 | |
17450429 | 3146 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3147 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3148 | |
3149 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3150 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3151 | |
3152 | /* True if we have looked for exception probes. */ | |
43dce439 | 3153 | int exception_searched = 0; |
28106bc2 | 3154 | |
45461e0d SM |
3155 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3156 | references. */ | |
3157 | std::vector<probe *> exception_probes; | |
17450429 PP |
3158 | }; |
3159 | ||
3160 | static const struct objfile_data *breakpoint_objfile_key; | |
3161 | ||
3162 | /* Minimal symbol not found sentinel. */ | |
3163 | static struct minimal_symbol msym_not_found; | |
3164 | ||
3165 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3166 | ||
3167 | static int | |
3168 | msym_not_found_p (const struct minimal_symbol *msym) | |
3169 | { | |
3170 | return msym == &msym_not_found; | |
3171 | } | |
3172 | ||
3173 | /* Return per-objfile data needed by breakpoint.c. | |
3174 | Allocate the data if necessary. */ | |
3175 | ||
3176 | static struct breakpoint_objfile_data * | |
3177 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3178 | { | |
3179 | struct breakpoint_objfile_data *bp_objfile_data; | |
3180 | ||
9a3c8263 SM |
3181 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3182 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3183 | if (bp_objfile_data == NULL) |
3184 | { | |
43dce439 | 3185 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3186 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3187 | } | |
3188 | return bp_objfile_data; | |
3189 | } | |
3190 | ||
28106bc2 | 3191 | static void |
43dce439 | 3192 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3193 | { |
9a3c8263 SM |
3194 | struct breakpoint_objfile_data *bp_objfile_data |
3195 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3196 | |
43dce439 | 3197 | delete bp_objfile_data; |
28106bc2 SDJ |
3198 | } |
3199 | ||
e62c965a | 3200 | static void |
af02033e | 3201 | create_overlay_event_breakpoint (void) |
e62c965a | 3202 | { |
69de3c6a | 3203 | struct objfile *objfile; |
af02033e | 3204 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3205 | |
69de3c6a PP |
3206 | ALL_OBJFILES (objfile) |
3207 | { | |
3208 | struct breakpoint *b; | |
17450429 PP |
3209 | struct breakpoint_objfile_data *bp_objfile_data; |
3210 | CORE_ADDR addr; | |
67994074 | 3211 | struct explicit_location explicit_loc; |
69de3c6a | 3212 | |
17450429 PP |
3213 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3214 | ||
3b7344d5 | 3215 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3216 | continue; |
3217 | ||
3b7344d5 | 3218 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3219 | { |
3b7344d5 | 3220 | struct bound_minimal_symbol m; |
17450429 PP |
3221 | |
3222 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3223 | if (m.minsym == NULL) |
17450429 PP |
3224 | { |
3225 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3226 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3227 | continue; |
3228 | } | |
3229 | bp_objfile_data->overlay_msym = m; | |
3230 | } | |
e62c965a | 3231 | |
77e371c0 | 3232 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3233 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3234 | bp_overlay_event, |
3235 | &internal_breakpoint_ops); | |
67994074 KS |
3236 | initialize_explicit_location (&explicit_loc); |
3237 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3238 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3239 | |
69de3c6a PP |
3240 | if (overlay_debugging == ovly_auto) |
3241 | { | |
3242 | b->enable_state = bp_enabled; | |
3243 | overlay_events_enabled = 1; | |
3244 | } | |
3245 | else | |
3246 | { | |
3247 | b->enable_state = bp_disabled; | |
3248 | overlay_events_enabled = 0; | |
3249 | } | |
e62c965a | 3250 | } |
e62c965a PP |
3251 | } |
3252 | ||
0fd8e87f | 3253 | static void |
af02033e | 3254 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3255 | { |
6c95b8df | 3256 | struct program_space *pspace; |
6c95b8df | 3257 | |
5ed8105e | 3258 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3259 | |
6c95b8df | 3260 | ALL_PSPACES (pspace) |
af02033e PP |
3261 | { |
3262 | struct objfile *objfile; | |
3263 | ||
3264 | set_current_program_space (pspace); | |
3265 | ||
3266 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3267 | { |
af02033e PP |
3268 | int i; |
3269 | struct gdbarch *gdbarch; | |
17450429 | 3270 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3271 | |
af02033e | 3272 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3273 | |
17450429 PP |
3274 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3275 | ||
28106bc2 SDJ |
3276 | if (!bp_objfile_data->longjmp_searched) |
3277 | { | |
45461e0d SM |
3278 | std::vector<probe *> ret |
3279 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3280 | |
45461e0d | 3281 | if (!ret.empty ()) |
25f9533e SDJ |
3282 | { |
3283 | /* We are only interested in checking one element. */ | |
45461e0d | 3284 | probe *p = ret[0]; |
25f9533e | 3285 | |
935676c9 | 3286 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3287 | { |
3288 | /* We cannot use the probe interface here, because it does | |
3289 | not know how to evaluate arguments. */ | |
45461e0d | 3290 | ret.clear (); |
25f9533e SDJ |
3291 | } |
3292 | } | |
3293 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3294 | bp_objfile_data->longjmp_searched = 1; |
3295 | } | |
3296 | ||
45461e0d | 3297 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3298 | { |
28106bc2 SDJ |
3299 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
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 SDJ |
3451 | { |
3452 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
45461e0d SM |
3453 | |
3454 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 SDJ |
3455 | { |
3456 | struct breakpoint *b; | |
3457 | ||
729662a5 | 3458 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3459 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3460 | bp_exception_master, |
3461 | &internal_breakpoint_ops); | |
d28cd78a | 3462 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3463 | b->enable_state = bp_disabled; |
3464 | } | |
3465 | ||
3466 | continue; | |
3467 | } | |
3468 | ||
3469 | /* Otherwise, try the hook function. */ | |
3470 | ||
3b7344d5 | 3471 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3472 | continue; |
3473 | ||
3474 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3475 | |
3b7344d5 | 3476 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3477 | { |
3b7344d5 | 3478 | struct bound_minimal_symbol debug_hook; |
186c406b | 3479 | |
17450429 | 3480 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3481 | if (debug_hook.minsym == NULL) |
17450429 | 3482 | { |
3b7344d5 | 3483 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3484 | continue; |
3485 | } | |
3486 | ||
3487 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3488 | } |
17450429 | 3489 | |
77e371c0 | 3490 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3491 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3492 | current_top_target ()); | |
06edf0c0 PA |
3493 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3494 | &internal_breakpoint_ops); | |
67994074 KS |
3495 | initialize_explicit_location (&explicit_loc); |
3496 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3497 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3498 | b->enable_state = bp_disabled; |
186c406b | 3499 | } |
186c406b TT |
3500 | } |
3501 | ||
9ef9e6a6 KS |
3502 | /* Does B have a location spec? */ |
3503 | ||
3504 | static int | |
3505 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3506 | { | |
d28cd78a | 3507 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3508 | } |
3509 | ||
c906108c | 3510 | void |
fba45db2 | 3511 | update_breakpoints_after_exec (void) |
c906108c | 3512 | { |
35df4500 | 3513 | struct breakpoint *b, *b_tmp; |
876fa593 | 3514 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3515 | |
25b22b0a PA |
3516 | /* We're about to delete breakpoints from GDB's lists. If the |
3517 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3518 | writing the breakpoints' "shadow contents" back into memory. The | |
3519 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3520 | do that. Instead, the target is responsible from marking | |
3521 | breakpoints out as soon as it detects an exec. We don't do that | |
3522 | here instead, because there may be other attempts to delete | |
3523 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3524 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3525 | if (bploc->pspace == current_program_space) |
3526 | gdb_assert (!bploc->inserted); | |
c906108c | 3527 | |
35df4500 | 3528 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3529 | { |
6c95b8df PA |
3530 | if (b->pspace != current_program_space) |
3531 | continue; | |
3532 | ||
4a64f543 | 3533 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3534 | if (b->type == bp_shlib_event) |
3535 | { | |
3536 | delete_breakpoint (b); | |
3537 | continue; | |
3538 | } | |
c906108c | 3539 | |
4a64f543 | 3540 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3541 | if (b->type == bp_jit_event) |
3542 | { | |
3543 | delete_breakpoint (b); | |
3544 | continue; | |
3545 | } | |
3546 | ||
1900040c | 3547 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3548 | as must overlay event and longjmp master breakpoints. */ |
3549 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3550 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3551 | || b->type == bp_exception_master) | |
c4093a6a JM |
3552 | { |
3553 | delete_breakpoint (b); | |
3554 | continue; | |
3555 | } | |
3556 | ||
4a64f543 | 3557 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3558 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3559 | { |
3560 | delete_breakpoint (b); | |
3561 | continue; | |
3562 | } | |
3563 | ||
7c16b83e PA |
3564 | /* Just like single-step breakpoints. */ |
3565 | if (b->type == bp_single_step) | |
3566 | { | |
3567 | delete_breakpoint (b); | |
3568 | continue; | |
3569 | } | |
3570 | ||
611c83ae PA |
3571 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3572 | after an exec. */ | |
186c406b | 3573 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3574 | || b->type == bp_longjmp_call_dummy |
186c406b | 3575 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3576 | { |
3577 | delete_breakpoint (b); | |
3578 | continue; | |
3579 | } | |
3580 | ||
ce78b96d JB |
3581 | if (b->type == bp_catchpoint) |
3582 | { | |
3583 | /* For now, none of the bp_catchpoint breakpoints need to | |
3584 | do anything at this point. In the future, if some of | |
3585 | the catchpoints need to something, we will need to add | |
3586 | a new method, and call this method from here. */ | |
3587 | continue; | |
3588 | } | |
3589 | ||
c5aa993b JM |
3590 | /* bp_finish is a special case. The only way we ought to be able |
3591 | to see one of these when an exec() has happened, is if the user | |
3592 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3593 | carries them to the call-site of the current callee, by setting | |
3594 | a temporary bp there and resuming. But in this case, the finish | |
3595 | will carry them entirely through the vfork & exec. | |
3596 | ||
3597 | We don't want to allow a bp_finish to remain inserted now. But | |
3598 | we can't safely delete it, 'cause finish_command has a handle to | |
3599 | the bp on a bpstat, and will later want to delete it. There's a | |
3600 | chance (and I've seen it happen) that if we delete the bp_finish | |
3601 | here, that its storage will get reused by the time finish_command | |
3602 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3603 | We really must allow finish_command to delete a bp_finish. | |
3604 | ||
e5dd4106 | 3605 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3606 | it's safe to delete something others may have handles to?" |
3607 | problem, what we'll do here is just uninsert the bp_finish, and | |
3608 | let finish_command delete it. | |
3609 | ||
3610 | (We know the bp_finish is "doomed" in the sense that it's | |
3611 | momentary, and will be deleted as soon as finish_command sees | |
3612 | the inferior stopped. So it doesn't matter that the bp's | |
3613 | address is probably bogus in the new a.out, unlike e.g., the | |
3614 | solib breakpoints.) */ | |
c5aa993b | 3615 | |
c5aa993b JM |
3616 | if (b->type == bp_finish) |
3617 | { | |
3618 | continue; | |
3619 | } | |
3620 | ||
3621 | /* Without a symbolic address, we have little hope of the | |
3622 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3623 | a.out. */ |
9ef9e6a6 | 3624 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3625 | { |
3626 | delete_breakpoint (b); | |
3627 | continue; | |
3628 | } | |
c5aa993b | 3629 | } |
c906108c SS |
3630 | } |
3631 | ||
3632 | int | |
d80ee84f | 3633 | detach_breakpoints (ptid_t ptid) |
c906108c | 3634 | { |
35df4500 | 3635 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3636 | int val = 0; |
2989a365 | 3637 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3638 | struct inferior *inf = current_inferior (); |
c5aa993b | 3639 | |
dfd4cc63 | 3640 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3641 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3642 | |
6c95b8df | 3643 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3644 | inferior_ptid = ptid; |
35df4500 | 3645 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3646 | { |
35df4500 | 3647 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3648 | continue; |
3649 | ||
bd9673a4 PW |
3650 | /* This function must physically remove breakpoints locations |
3651 | from the specified ptid, without modifying the breakpoint | |
3652 | package's state. Locations of type bp_loc_other are only | |
3653 | maintained at GDB side. So, there is no need to remove | |
3654 | these bp_loc_other locations. Moreover, removing these | |
3655 | would modify the breakpoint package's state. */ | |
3656 | if (bl->loc_type == bp_loc_other) | |
3657 | continue; | |
3658 | ||
35df4500 | 3659 | if (bl->inserted) |
b2b6a7da | 3660 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3661 | } |
d03285ec | 3662 | |
3a1bae8e | 3663 | return val; |
c906108c SS |
3664 | } |
3665 | ||
35df4500 | 3666 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3667 | Note that this is used to detach breakpoints from a child fork. |
3668 | When we get here, the child isn't in the inferior list, and neither | |
3669 | do we have objects to represent its address space --- we should | |
35df4500 | 3670 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3671 | |
c906108c | 3672 | static int |
b2b6a7da | 3673 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3674 | { |
3675 | int val; | |
c5aa993b | 3676 | |
35df4500 TJB |
3677 | /* BL is never in moribund_locations by our callers. */ |
3678 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3679 | |
74960c60 VP |
3680 | /* The type of none suggests that owner is actually deleted. |
3681 | This should not ever happen. */ | |
35df4500 | 3682 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3683 | |
35df4500 TJB |
3684 | if (bl->loc_type == bp_loc_software_breakpoint |
3685 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3686 | { |
c02f5703 MS |
3687 | /* "Normal" instruction breakpoint: either the standard |
3688 | trap-instruction bp (bp_breakpoint), or a | |
3689 | bp_hardware_breakpoint. */ | |
3690 | ||
3691 | /* First check to see if we have to handle an overlay. */ | |
3692 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3693 | || bl->section == NULL |
3694 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3695 | { |
3696 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3697 | |
3698 | /* If we're trying to uninsert a memory breakpoint that we | |
3699 | know is set in a dynamic object that is marked | |
3700 | shlib_disabled, then either the dynamic object was | |
3701 | removed with "remove-symbol-file" or with | |
3702 | "nosharedlibrary". In the former case, we don't know | |
3703 | whether another dynamic object might have loaded over the | |
3704 | breakpoint's address -- the user might well let us know | |
3705 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3706 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3707 | list of dynamically loaded objects). If we have the |
3708 | breakpoint's shadow memory, that is, this is a software | |
3709 | breakpoint managed by GDB, check whether the breakpoint | |
3710 | is still inserted in memory, to avoid overwriting wrong | |
3711 | code with stale saved shadow contents. Note that HW | |
3712 | breakpoints don't have shadow memory, as they're | |
3713 | implemented using a mechanism that is not dependent on | |
3714 | being able to modify the target's memory, and as such | |
3715 | they should always be removed. */ | |
3716 | if (bl->shlib_disabled | |
3717 | && bl->target_info.shadow_len != 0 | |
3718 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3719 | val = 0; | |
3720 | else | |
73971819 | 3721 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3722 | } |
c906108c SS |
3723 | else |
3724 | { | |
4a64f543 | 3725 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3726 | Did we set a breakpoint at the LMA? */ |
3727 | if (!overlay_events_enabled) | |
3728 | { | |
3729 | /* Yes -- overlay event support is not active, so we | |
3730 | should have set a breakpoint at the LMA. Remove it. | |
3731 | */ | |
c02f5703 MS |
3732 | /* Ignore any failures: if the LMA is in ROM, we will |
3733 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3734 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3735 | target_remove_hw_breakpoint (bl->gdbarch, | |
3736 | &bl->overlay_target_info); | |
c02f5703 | 3737 | else |
35df4500 | 3738 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3739 | &bl->overlay_target_info, |
3740 | reason); | |
c02f5703 MS |
3741 | } |
3742 | /* Did we set a breakpoint at the VMA? | |
3743 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3744 | if (bl->inserted) |
c906108c | 3745 | { |
c02f5703 MS |
3746 | /* Yes -- remove it. Previously we did not bother to |
3747 | remove the breakpoint if the section had been | |
3748 | unmapped, but let's not rely on that being safe. We | |
3749 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3750 | |
3751 | /* However, we should remove *software* breakpoints only | |
3752 | if the section is still mapped, or else we overwrite | |
3753 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3754 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3755 | || section_is_mapped (bl->section)) | |
73971819 | 3756 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3757 | else |
3758 | val = 0; | |
c906108c | 3759 | } |
c02f5703 MS |
3760 | else |
3761 | { | |
3762 | /* No -- not inserted, so no need to remove. No error. */ | |
3763 | val = 0; | |
3764 | } | |
c906108c | 3765 | } |
879d1e6b | 3766 | |
08351840 PA |
3767 | /* In some cases, we might not be able to remove a breakpoint in |
3768 | a shared library that has already been removed, but we have | |
3769 | not yet processed the shlib unload event. Similarly for an | |
3770 | unloaded add-symbol-file object - the user might not yet have | |
3771 | had the chance to remove-symbol-file it. shlib_disabled will | |
3772 | be set if the library/object has already been removed, but | |
3773 | the breakpoint hasn't been uninserted yet, e.g., after | |
3774 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3775 | always-inserted mode. */ | |
076855f9 | 3776 | if (val |
08351840 PA |
3777 | && (bl->loc_type == bp_loc_software_breakpoint |
3778 | && (bl->shlib_disabled | |
3779 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3780 | || shared_objfile_contains_address_p (bl->pspace, |
3781 | bl->address)))) | |
879d1e6b UW |
3782 | val = 0; |
3783 | ||
c906108c SS |
3784 | if (val) |
3785 | return val; | |
b2b6a7da | 3786 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3787 | } |
35df4500 | 3788 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3789 | { |
77b06cd7 TJB |
3790 | gdb_assert (bl->owner->ops != NULL |
3791 | && bl->owner->ops->remove_location != NULL); | |
3792 | ||
b2b6a7da | 3793 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3794 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3795 | |
c906108c | 3796 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3797 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3798 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3799 | bl->owner->number); |
c906108c | 3800 | } |
35df4500 TJB |
3801 | else if (bl->owner->type == bp_catchpoint |
3802 | && breakpoint_enabled (bl->owner) | |
3803 | && !bl->duplicate) | |
ce78b96d | 3804 | { |
77b06cd7 TJB |
3805 | gdb_assert (bl->owner->ops != NULL |
3806 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3807 | |
73971819 | 3808 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3809 | if (val) |
3810 | return val; | |
77b06cd7 | 3811 | |
b2b6a7da | 3812 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3813 | } |
c906108c SS |
3814 | |
3815 | return 0; | |
3816 | } | |
3817 | ||
6c95b8df | 3818 | static int |
834c0d03 | 3819 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3820 | { |
35df4500 TJB |
3821 | /* BL is never in moribund_locations by our callers. */ |
3822 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3823 | |
6c95b8df PA |
3824 | /* The type of none suggests that owner is actually deleted. |
3825 | This should not ever happen. */ | |
35df4500 | 3826 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3827 | |
5ed8105e | 3828 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3829 | |
35df4500 | 3830 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3831 | |
5ed8105e | 3832 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3833 | } |
3834 | ||
c906108c SS |
3835 | /* Clear the "inserted" flag in all breakpoints. */ |
3836 | ||
25b22b0a | 3837 | void |
fba45db2 | 3838 | mark_breakpoints_out (void) |
c906108c | 3839 | { |
35df4500 | 3840 | struct bp_location *bl, **blp_tmp; |
c906108c | 3841 | |
35df4500 | 3842 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3843 | if (bl->pspace == current_program_space) |
35df4500 | 3844 | bl->inserted = 0; |
c906108c SS |
3845 | } |
3846 | ||
53a5351d JM |
3847 | /* Clear the "inserted" flag in all breakpoints and delete any |
3848 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3849 | |
3850 | Plus other such housekeeping that has to be done for breakpoints | |
3851 | between runs. | |
3852 | ||
53a5351d JM |
3853 | Note: this function gets called at the end of a run (by |
3854 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3855 | init_wait_for_inferior). */ |
c906108c SS |
3856 | |
3857 | ||
3858 | ||
3859 | void | |
fba45db2 | 3860 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3861 | { |
35df4500 | 3862 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3863 | struct bp_location *bl; |
1c5cfe86 | 3864 | int ix; |
6c95b8df | 3865 | struct program_space *pspace = current_program_space; |
c906108c | 3866 | |
50c71eaf PA |
3867 | /* If breakpoint locations are shared across processes, then there's |
3868 | nothing to do. */ | |
f5656ead | 3869 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3870 | return; |
3871 | ||
1a853c52 | 3872 | mark_breakpoints_out (); |
075f6582 | 3873 | |
35df4500 | 3874 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3875 | { |
6c95b8df PA |
3876 | if (b->loc && b->loc->pspace != pspace) |
3877 | continue; | |
3878 | ||
c5aa993b JM |
3879 | switch (b->type) |
3880 | { | |
3881 | case bp_call_dummy: | |
e2e4d78b | 3882 | case bp_longjmp_call_dummy: |
c906108c | 3883 | |
c5aa993b | 3884 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3885 | cause problems when the inferior is rerun, so we better get |
3886 | rid of it. */ | |
3887 | ||
3888 | case bp_watchpoint_scope: | |
3889 | ||
3890 | /* Also get rid of scope breakpoints. */ | |
3891 | ||
3892 | case bp_shlib_event: | |
3893 | ||
3894 | /* Also remove solib event breakpoints. Their addresses may | |
3895 | have changed since the last time we ran the program. | |
3896 | Actually we may now be debugging against different target; | |
3897 | and so the solib backend that installed this breakpoint may | |
3898 | not be used in by the target. E.g., | |
3899 | ||
3900 | (gdb) file prog-linux | |
3901 | (gdb) run # native linux target | |
3902 | ... | |
3903 | (gdb) kill | |
3904 | (gdb) file prog-win.exe | |
3905 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3906 | */ | |
c906108c | 3907 | |
f59f708a PA |
3908 | case bp_step_resume: |
3909 | ||
3910 | /* Also remove step-resume breakpoints. */ | |
3911 | ||
7c16b83e PA |
3912 | case bp_single_step: |
3913 | ||
3914 | /* Also remove single-step breakpoints. */ | |
3915 | ||
c5aa993b JM |
3916 | delete_breakpoint (b); |
3917 | break; | |
c906108c | 3918 | |
c5aa993b JM |
3919 | case bp_watchpoint: |
3920 | case bp_hardware_watchpoint: | |
3921 | case bp_read_watchpoint: | |
3922 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3923 | { |
3924 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3925 | |
3a5c3e22 PA |
3926 | /* Likewise for watchpoints on local expressions. */ |
3927 | if (w->exp_valid_block != NULL) | |
3928 | delete_breakpoint (b); | |
63000888 | 3929 | else |
3a5c3e22 | 3930 | { |
63000888 PA |
3931 | /* Get rid of existing locations, which are no longer |
3932 | valid. New ones will be created in | |
3933 | update_watchpoint, when the inferior is restarted. | |
3934 | The next update_global_location_list call will | |
3935 | garbage collect them. */ | |
3936 | b->loc = NULL; | |
3937 | ||
3938 | if (context == inf_starting) | |
3939 | { | |
3940 | /* Reset val field to force reread of starting value in | |
3941 | insert_breakpoints. */ | |
850645cf | 3942 | w->val.reset (nullptr); |
63000888 PA |
3943 | w->val_valid = 0; |
3944 | } | |
3945 | } | |
3a5c3e22 | 3946 | } |
c5aa993b JM |
3947 | break; |
3948 | default: | |
c5aa993b JM |
3949 | break; |
3950 | } | |
3951 | } | |
1c5cfe86 PA |
3952 | |
3953 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3954 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3955 | decref_bp_location (&bl); | |
1c5cfe86 | 3956 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3957 | } |
3958 | ||
6c95b8df PA |
3959 | /* These functions concern about actual breakpoints inserted in the |
3960 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3961 | we need to hop over the bkpt --- so we check for address space | |
3962 | match, not program space. */ | |
3963 | ||
c2c6d25f JM |
3964 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3965 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3966 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3967 | permanent breakpoint. | |
3968 | - When continuing from a location with an ordinary breakpoint, we | |
3969 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3970 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3971 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3972 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3973 | |
c2c6d25f | 3974 | enum breakpoint_here |
accd0bcd | 3975 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3976 | { |
35df4500 | 3977 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3978 | int any_breakpoint_here = 0; |
c906108c | 3979 | |
35df4500 | 3980 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3981 | { |
35df4500 TJB |
3982 | if (bl->loc_type != bp_loc_software_breakpoint |
3983 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3984 | continue; |
3985 | ||
f1310107 | 3986 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3987 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3988 | || bl->permanent) |
f1310107 | 3989 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3990 | { |
3991 | if (overlay_debugging | |
35df4500 TJB |
3992 | && section_is_overlay (bl->section) |
3993 | && !section_is_mapped (bl->section)) | |
075f6582 | 3994 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3995 | else if (bl->permanent) |
075f6582 DJ |
3996 | return permanent_breakpoint_here; |
3997 | else | |
3998 | any_breakpoint_here = 1; | |
3999 | } | |
4000 | } | |
c906108c | 4001 | |
f486487f | 4002 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4003 | } |
4004 | ||
d35ae833 PA |
4005 | /* See breakpoint.h. */ |
4006 | ||
4007 | int | |
accd0bcd | 4008 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4009 | CORE_ADDR addr, ULONGEST len) |
4010 | { | |
4011 | struct bp_location *bl, **blp_tmp; | |
4012 | ||
4013 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4014 | { | |
4015 | if (bl->loc_type != bp_loc_software_breakpoint | |
4016 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4017 | continue; | |
4018 | ||
4019 | if ((breakpoint_enabled (bl->owner) | |
4020 | || bl->permanent) | |
4021 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4022 | addr, len)) | |
4023 | { | |
4024 | if (overlay_debugging | |
4025 | && section_is_overlay (bl->section) | |
4026 | && !section_is_mapped (bl->section)) | |
4027 | { | |
4028 | /* Unmapped overlay -- can't be a match. */ | |
4029 | continue; | |
4030 | } | |
4031 | ||
4032 | return 1; | |
4033 | } | |
4034 | } | |
4035 | ||
4036 | return 0; | |
4037 | } | |
4038 | ||
1c5cfe86 PA |
4039 | /* Return true if there's a moribund breakpoint at PC. */ |
4040 | ||
4041 | int | |
accd0bcd | 4042 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4043 | { |
4044 | struct bp_location *loc; | |
4045 | int ix; | |
4046 | ||
4047 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4048 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4049 | return 1; |
4050 | ||
4051 | return 0; | |
4052 | } | |
c2c6d25f | 4053 | |
f7ce857f PA |
4054 | /* Returns non-zero iff BL is inserted at PC, in address space |
4055 | ASPACE. */ | |
4056 | ||
4057 | static int | |
4058 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4059 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4060 | { |
4061 | if (bl->inserted | |
4062 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4063 | aspace, pc)) | |
4064 | { | |
4065 | if (overlay_debugging | |
4066 | && section_is_overlay (bl->section) | |
4067 | && !section_is_mapped (bl->section)) | |
4068 | return 0; /* unmapped overlay -- can't be a match */ | |
4069 | else | |
4070 | return 1; | |
4071 | } | |
4072 | return 0; | |
4073 | } | |
4074 | ||
a1fd2fa5 | 4075 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4076 | |
4077 | int | |
accd0bcd | 4078 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4079 | { |
f7ce857f | 4080 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4081 | |
f7ce857f | 4082 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4083 | { |
f7ce857f PA |
4084 | struct bp_location *bl = *blp; |
4085 | ||
35df4500 TJB |
4086 | if (bl->loc_type != bp_loc_software_breakpoint |
4087 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4088 | continue; |
4089 | ||
f7ce857f PA |
4090 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4091 | return 1; | |
c5aa993b | 4092 | } |
c36b740a VP |
4093 | return 0; |
4094 | } | |
4095 | ||
a1fd2fa5 PA |
4096 | /* This function returns non-zero iff there is a software breakpoint |
4097 | inserted at PC. */ | |
c36b740a VP |
4098 | |
4099 | int | |
accd0bcd | 4100 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4101 | CORE_ADDR pc) |
4fa8626c | 4102 | { |
f7ce857f | 4103 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4104 | |
f7ce857f | 4105 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4106 | { |
f7ce857f PA |
4107 | struct bp_location *bl = *blp; |
4108 | ||
35df4500 | 4109 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4110 | continue; |
4111 | ||
f7ce857f PA |
4112 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4113 | return 1; | |
4fa8626c DJ |
4114 | } |
4115 | ||
4116 | return 0; | |
9c02b525 PA |
4117 | } |
4118 | ||
4119 | /* See breakpoint.h. */ | |
4120 | ||
4121 | int | |
accd0bcd | 4122 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4123 | CORE_ADDR pc) |
4124 | { | |
4125 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4126 | |
4127 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4128 | { | |
4129 | struct bp_location *bl = *blp; | |
4130 | ||
4131 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4132 | continue; | |
4133 | ||
4134 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4135 | return 1; | |
4136 | } | |
4137 | ||
4138 | return 0; | |
4fa8626c DJ |
4139 | } |
4140 | ||
9093389c | 4141 | int |
accd0bcd | 4142 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4143 | CORE_ADDR addr, ULONGEST len) |
4144 | { | |
4145 | struct breakpoint *bpt; | |
4146 | ||
4147 | ALL_BREAKPOINTS (bpt) | |
4148 | { | |
4149 | struct bp_location *loc; | |
4150 | ||
4151 | if (bpt->type != bp_hardware_watchpoint | |
4152 | && bpt->type != bp_access_watchpoint) | |
4153 | continue; | |
4154 | ||
4155 | if (!breakpoint_enabled (bpt)) | |
4156 | continue; | |
4157 | ||
4158 | for (loc = bpt->loc; loc; loc = loc->next) | |
4159 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4160 | { | |
4161 | CORE_ADDR l, h; | |
4162 | ||
4163 | /* Check for intersection. */ | |
768adc05 PA |
4164 | l = std::max<CORE_ADDR> (loc->address, addr); |
4165 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4166 | if (l < h) |
4167 | return 1; | |
4168 | } | |
4169 | } | |
4170 | return 0; | |
4171 | } | |
c906108c | 4172 | \f |
c5aa993b | 4173 | |
c906108c SS |
4174 | /* bpstat stuff. External routines' interfaces are documented |
4175 | in breakpoint.h. */ | |
4176 | ||
4177 | int | |
c326b90e | 4178 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4179 | { |
533be4dd | 4180 | return (ep->type == bp_catchpoint); |
c906108c SS |
4181 | } |
4182 | ||
f431efe5 PA |
4183 | /* Frees any storage that is part of a bpstat. Does not walk the |
4184 | 'next' chain. */ | |
4185 | ||
04afa70c | 4186 | bpstats::~bpstats () |
198757a8 | 4187 | { |
04afa70c TT |
4188 | if (bp_location_at != NULL) |
4189 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4190 | } |
4191 | ||
c906108c SS |
4192 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4193 | Also free any storage that is part of a bpstat. */ | |
4194 | ||
4195 | void | |
fba45db2 | 4196 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4197 | { |
4198 | bpstat p; | |
4199 | bpstat q; | |
4200 | ||
4201 | if (bsp == 0) | |
4202 | return; | |
4203 | p = *bsp; | |
4204 | while (p != NULL) | |
4205 | { | |
4206 | q = p->next; | |
04afa70c | 4207 | delete p; |
c906108c SS |
4208 | p = q; |
4209 | } | |
4210 | *bsp = NULL; | |
4211 | } | |
4212 | ||
04afa70c TT |
4213 | bpstats::bpstats (const bpstats &other) |
4214 | : next (NULL), | |
4215 | bp_location_at (other.bp_location_at), | |
4216 | breakpoint_at (other.breakpoint_at), | |
4217 | commands (other.commands), | |
04afa70c TT |
4218 | print (other.print), |
4219 | stop (other.stop), | |
4220 | print_it (other.print_it) | |
4221 | { | |
850645cf TT |
4222 | if (other.old_val != NULL) |
4223 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4224 | incref_bp_location (bp_location_at); |
04afa70c TT |
4225 | } |
4226 | ||
c906108c SS |
4227 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4228 | is part of the bpstat is copied as well. */ | |
4229 | ||
4230 | bpstat | |
fba45db2 | 4231 | bpstat_copy (bpstat bs) |
c906108c SS |
4232 | { |
4233 | bpstat p = NULL; | |
4234 | bpstat tmp; | |
4235 | bpstat retval = NULL; | |
4236 | ||
4237 | if (bs == NULL) | |
4238 | return bs; | |
4239 | ||
4240 | for (; bs != NULL; bs = bs->next) | |
4241 | { | |
04afa70c | 4242 | tmp = new bpstats (*bs); |
31cc81e9 | 4243 | |
c906108c SS |
4244 | if (p == NULL) |
4245 | /* This is the first thing in the chain. */ | |
4246 | retval = tmp; | |
4247 | else | |
4248 | p->next = tmp; | |
4249 | p = tmp; | |
4250 | } | |
4251 | p->next = NULL; | |
4252 | return retval; | |
4253 | } | |
4254 | ||
4a64f543 | 4255 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4256 | |
4257 | bpstat | |
fba45db2 | 4258 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4259 | { |
c5aa993b JM |
4260 | if (bsp == NULL) |
4261 | return NULL; | |
c906108c | 4262 | |
c5aa993b JM |
4263 | for (; bsp != NULL; bsp = bsp->next) |
4264 | { | |
f431efe5 | 4265 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4266 | return bsp; |
4267 | } | |
c906108c SS |
4268 | return NULL; |
4269 | } | |
4270 | ||
ab04a2af TT |
4271 | /* See breakpoint.h. */ |
4272 | ||
47591c29 | 4273 | int |
427cd150 | 4274 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4275 | { |
ab04a2af TT |
4276 | for (; bsp != NULL; bsp = bsp->next) |
4277 | { | |
427cd150 TT |
4278 | if (bsp->breakpoint_at == NULL) |
4279 | { | |
4280 | /* A moribund location can never explain a signal other than | |
4281 | GDB_SIGNAL_TRAP. */ | |
4282 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4283 | return 1; |
427cd150 TT |
4284 | } |
4285 | else | |
47591c29 PA |
4286 | { |
4287 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4288 | sig)) | |
4289 | return 1; | |
4290 | } | |
ab04a2af TT |
4291 | } |
4292 | ||
47591c29 | 4293 | return 0; |
ab04a2af TT |
4294 | } |
4295 | ||
4a64f543 MS |
4296 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4297 | stopped at. *BSP upon return is a bpstat which points to the | |
4298 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4299 | good for anything but further calls to bpstat_num). | |
4300 | ||
8671a17b PA |
4301 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4302 | Return -1 if stopped at a breakpoint that has been deleted since | |
4303 | we set it. | |
4304 | Return 1 otherwise. */ | |
c906108c SS |
4305 | |
4306 | int | |
8671a17b | 4307 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4308 | { |
4309 | struct breakpoint *b; | |
4310 | ||
4311 | if ((*bsp) == NULL) | |
4312 | return 0; /* No more breakpoint values */ | |
8671a17b | 4313 | |
4a64f543 MS |
4314 | /* We assume we'll never have several bpstats that correspond to a |
4315 | single breakpoint -- otherwise, this function might return the | |
4316 | same number more than once and this will look ugly. */ | |
f431efe5 | 4317 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4318 | *bsp = (*bsp)->next; |
4319 | if (b == NULL) | |
4320 | return -1; /* breakpoint that's been deleted since */ | |
4321 | ||
4322 | *num = b->number; /* We have its number */ | |
4323 | return 1; | |
c906108c SS |
4324 | } |
4325 | ||
e93ca019 | 4326 | /* See breakpoint.h. */ |
c906108c SS |
4327 | |
4328 | void | |
e93ca019 | 4329 | bpstat_clear_actions (void) |
c906108c | 4330 | { |
e93ca019 JK |
4331 | bpstat bs; |
4332 | ||
00431a78 | 4333 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4334 | return; |
4335 | ||
00431a78 | 4336 | thread_info *tp = inferior_thread (); |
e93ca019 | 4337 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4338 | { |
d1b0a7bf | 4339 | bs->commands = NULL; |
850645cf | 4340 | bs->old_val.reset (nullptr); |
c906108c SS |
4341 | } |
4342 | } | |
4343 | ||
f3b1572e PA |
4344 | /* Called when a command is about to proceed the inferior. */ |
4345 | ||
4346 | static void | |
4347 | breakpoint_about_to_proceed (void) | |
4348 | { | |
4349 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4350 | { | |
4351 | struct thread_info *tp = inferior_thread (); | |
4352 | ||
4353 | /* Allow inferior function calls in breakpoint commands to not | |
4354 | interrupt the command list. When the call finishes | |
4355 | successfully, the inferior will be standing at the same | |
4356 | breakpoint as if nothing happened. */ | |
16c381f0 | 4357 | if (tp->control.in_infcall) |
f3b1572e PA |
4358 | return; |
4359 | } | |
4360 | ||
4361 | breakpoint_proceeded = 1; | |
4362 | } | |
4363 | ||
abf85f46 JK |
4364 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4365 | or its equivalent. */ | |
4366 | ||
4367 | static int | |
4368 | command_line_is_silent (struct command_line *cmd) | |
4369 | { | |
4f45d445 | 4370 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4371 | } |
4372 | ||
4a64f543 MS |
4373 | /* Execute all the commands associated with all the breakpoints at |
4374 | this location. Any of these commands could cause the process to | |
4375 | proceed beyond this point, etc. We look out for such changes by | |
4376 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4377 | |
347bddb7 PA |
4378 | Returns true if a breakpoint command resumed the inferior. In that |
4379 | case, it is the caller's responsibility to recall it again with the | |
4380 | bpstat of the current thread. */ | |
4381 | ||
4382 | static int | |
4383 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4384 | { |
4385 | bpstat bs; | |
347bddb7 | 4386 | int again = 0; |
c906108c SS |
4387 | |
4388 | /* Avoid endless recursion if a `source' command is contained | |
4389 | in bs->commands. */ | |
4390 | if (executing_breakpoint_commands) | |
347bddb7 | 4391 | return 0; |
c906108c | 4392 | |
81b1e71c TT |
4393 | scoped_restore save_executing |
4394 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4395 | |
1ac32117 | 4396 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4397 | |
4a64f543 | 4398 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4399 | bs = *bsp; |
4400 | ||
4401 | breakpoint_proceeded = 0; | |
4402 | for (; bs != NULL; bs = bs->next) | |
4403 | { | |
d1b0a7bf | 4404 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4405 | |
4406 | /* Take ownership of the BSP's command tree, if it has one. | |
4407 | ||
4408 | The command tree could legitimately contain commands like | |
4409 | 'step' and 'next', which call clear_proceed_status, which | |
4410 | frees stop_bpstat's command tree. To make sure this doesn't | |
4411 | free the tree we're executing out from under us, we need to | |
4412 | take ownership of the tree ourselves. Since a given bpstat's | |
4413 | commands are only executed once, we don't need to copy it; we | |
4414 | can clear the pointer in the bpstat, and make sure we free | |
4415 | the tree when we're done. */ | |
d1b0a7bf | 4416 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4417 | bs->commands = NULL; |
d1b0a7bf TT |
4418 | if (ccmd != NULL) |
4419 | cmd = ccmd.get (); | |
abf85f46 JK |
4420 | if (command_line_is_silent (cmd)) |
4421 | { | |
4422 | /* The action has been already done by bpstat_stop_status. */ | |
4423 | cmd = cmd->next; | |
4424 | } | |
6c50ab1c | 4425 | |
c906108c SS |
4426 | while (cmd != NULL) |
4427 | { | |
4428 | execute_control_command (cmd); | |
4429 | ||
4430 | if (breakpoint_proceeded) | |
4431 | break; | |
4432 | else | |
4433 | cmd = cmd->next; | |
4434 | } | |
6c50ab1c | 4435 | |
c906108c | 4436 | if (breakpoint_proceeded) |
32c1e744 | 4437 | { |
cb814510 | 4438 | if (current_ui->async) |
347bddb7 PA |
4439 | /* If we are in async mode, then the target might be still |
4440 | running, not stopped at any breakpoint, so nothing for | |
4441 | us to do here -- just return to the event loop. */ | |
4442 | ; | |
32c1e744 VP |
4443 | else |
4444 | /* In sync mode, when execute_control_command returns | |
4445 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4446 | Breakpoint commands for that stop were not run, since |
4447 | execute_command does not run breakpoint commands -- | |
4448 | only command_line_handler does, but that one is not | |
4449 | involved in execution of breakpoint commands. So, we | |
4450 | can now execute breakpoint commands. It should be | |
4451 | noted that making execute_command do bpstat actions is | |
4452 | not an option -- in this case we'll have recursive | |
4453 | invocation of bpstat for each breakpoint with a | |
4454 | command, and can easily blow up GDB stack. Instead, we | |
4455 | return true, which will trigger the caller to recall us | |
4456 | with the new stop_bpstat. */ | |
4457 | again = 1; | |
4458 | break; | |
32c1e744 | 4459 | } |
c906108c | 4460 | } |
347bddb7 PA |
4461 | return again; |
4462 | } | |
4463 | ||
00431a78 PA |
4464 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4465 | one, is alive and has execution. Return NULL otherwise. */ | |
4466 | ||
4467 | static thread_info * | |
4468 | get_bpstat_thread () | |
4469 | { | |
4470 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4471 | return NULL; | |
4472 | ||
4473 | thread_info *tp = inferior_thread (); | |
4474 | if (tp->state == THREAD_EXITED || tp->executing) | |
4475 | return NULL; | |
4476 | return tp; | |
4477 | } | |
4478 | ||
347bddb7 PA |
4479 | void |
4480 | bpstat_do_actions (void) | |
4481 | { | |
353d1d73 | 4482 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
00431a78 | 4483 | thread_info *tp; |
353d1d73 | 4484 | |
347bddb7 | 4485 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4486 | while ((tp = get_bpstat_thread ()) != NULL) |
4487 | { | |
4488 | /* Since in sync mode, bpstat_do_actions may resume the | |
4489 | inferior, and only return when it is stopped at the next | |
4490 | breakpoint, we keep doing breakpoint actions until it returns | |
4491 | false to indicate the inferior was not resumed. */ | |
4492 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4493 | break; | |
4494 | } | |
353d1d73 JK |
4495 | |
4496 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4497 | } |
4498 | ||
fa4727a6 DJ |
4499 | /* Print out the (old or new) value associated with a watchpoint. */ |
4500 | ||
4501 | static void | |
4502 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4503 | { | |
4504 | if (val == NULL) | |
4505 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4506 | else | |
79a45b7d TT |
4507 | { |
4508 | struct value_print_options opts; | |
4509 | get_user_print_options (&opts); | |
4510 | value_print (val, stream, &opts); | |
4511 | } | |
fa4727a6 DJ |
4512 | } |
4513 | ||
f303dbd6 PA |
4514 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4515 | debugging multiple threads. */ | |
4516 | ||
4517 | void | |
4518 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4519 | { | |
112e8700 | 4520 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4521 | return; |
4522 | ||
112e8700 | 4523 | uiout->text ("\n"); |
f303dbd6 PA |
4524 | |
4525 | if (show_thread_that_caused_stop ()) | |
4526 | { | |
4527 | const char *name; | |
4528 | struct thread_info *thr = inferior_thread (); | |
4529 | ||
112e8700 SM |
4530 | uiout->text ("Thread "); |
4531 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4532 | |
4533 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4534 | if (name != NULL) | |
4535 | { | |
112e8700 SM |
4536 | uiout->text (" \""); |
4537 | uiout->field_fmt ("name", "%s", name); | |
4538 | uiout->text ("\""); | |
f303dbd6 PA |
4539 | } |
4540 | ||
112e8700 | 4541 | uiout->text (" hit "); |
f303dbd6 PA |
4542 | } |
4543 | } | |
4544 | ||
e514a9d6 | 4545 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4546 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4547 | 'print_it' in the bpstat structure. Under some circumstances we |
4548 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4549 | normal_stop(). */ |
e514a9d6 JM |
4550 | |
4551 | static enum print_stop_action | |
4552 | print_bp_stop_message (bpstat bs) | |
4553 | { | |
4554 | switch (bs->print_it) | |
4555 | { | |
4556 | case print_it_noop: | |
4a64f543 | 4557 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4558 | return PRINT_UNKNOWN; |
4559 | break; | |
4560 | ||
4561 | case print_it_done: | |
4562 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4563 | relevant messages. */ |
e514a9d6 JM |
4564 | return PRINT_SRC_AND_LOC; |
4565 | break; | |
4566 | ||
4567 | case print_it_normal: | |
4f8d1dc6 | 4568 | { |
f431efe5 PA |
4569 | struct breakpoint *b = bs->breakpoint_at; |
4570 | ||
1a6a67de TJB |
4571 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4572 | which has since been deleted. */ | |
4573 | if (b == NULL) | |
4574 | return PRINT_UNKNOWN; | |
4575 | ||
348d480f PA |
4576 | /* Normal case. Call the breakpoint's print_it method. */ |
4577 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4578 | } |
348d480f | 4579 | break; |
3086aeae | 4580 | |
e514a9d6 | 4581 | default: |
8e65ff28 | 4582 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4583 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4584 | break; |
c906108c | 4585 | } |
c906108c SS |
4586 | } |
4587 | ||
edcc5120 TT |
4588 | /* A helper function that prints a shared library stopped event. */ |
4589 | ||
4590 | static void | |
4591 | print_solib_event (int is_catchpoint) | |
4592 | { | |
6fb16ce6 | 4593 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4594 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4595 | |
4596 | if (!is_catchpoint) | |
4597 | { | |
4598 | if (any_added || any_deleted) | |
112e8700 | 4599 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4600 | else |
112e8700 SM |
4601 | current_uiout->text (_("Stopped due to shared library event (no " |
4602 | "libraries added or removed)\n")); | |
edcc5120 TT |
4603 | } |
4604 | ||
112e8700 SM |
4605 | if (current_uiout->is_mi_like_p ()) |
4606 | current_uiout->field_string ("reason", | |
4607 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4608 | |
4609 | if (any_deleted) | |
4610 | { | |
112e8700 | 4611 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4612 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4613 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4614 | { |
6fb16ce6 SM |
4615 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4616 | ||
edcc5120 | 4617 | if (ix > 0) |
112e8700 SM |
4618 | current_uiout->text (" "); |
4619 | current_uiout->field_string ("library", name); | |
4620 | current_uiout->text ("\n"); | |
edcc5120 | 4621 | } |
edcc5120 TT |
4622 | } |
4623 | ||
4624 | if (any_added) | |
4625 | { | |
112e8700 | 4626 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4627 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4628 | bool first = true; |
52941706 | 4629 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4630 | { |
bcb430e4 | 4631 | if (!first) |
112e8700 | 4632 | current_uiout->text (" "); |
bcb430e4 | 4633 | first = false; |
112e8700 SM |
4634 | current_uiout->field_string ("library", iter->so_name); |
4635 | current_uiout->text ("\n"); | |
edcc5120 | 4636 | } |
edcc5120 TT |
4637 | } |
4638 | } | |
4639 | ||
e514a9d6 JM |
4640 | /* Print a message indicating what happened. This is called from |
4641 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4642 | list - a list of the eventpoints that caused this stop. KIND is |
4643 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4644 | routine calls the generic print routine for printing a message |
4645 | about reasons for stopping. This will print (for example) the | |
4646 | "Breakpoint n," part of the output. The return value of this | |
4647 | routine is one of: | |
c906108c | 4648 | |
4a64f543 | 4649 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4650 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4651 | code to print the location. An example is |
c5aa993b JM |
4652 | "Breakpoint 1, " which should be followed by |
4653 | the location. | |
917317f4 | 4654 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4655 | to also print the location part of the message. |
4656 | An example is the catch/throw messages, which | |
4a64f543 | 4657 | don't require a location appended to the end. |
917317f4 | 4658 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4659 | further info to be printed. */ |
c906108c | 4660 | |
917317f4 | 4661 | enum print_stop_action |
36dfb11c | 4662 | bpstat_print (bpstat bs, int kind) |
c906108c | 4663 | { |
f486487f | 4664 | enum print_stop_action val; |
c5aa993b | 4665 | |
c906108c | 4666 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4667 | (Currently all watchpoints go on the bpstat whether hit or not. |
4668 | That probably could (should) be changed, provided care is taken | |
c906108c | 4669 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4670 | for (; bs; bs = bs->next) |
4671 | { | |
4672 | val = print_bp_stop_message (bs); | |
4673 | if (val == PRINT_SRC_ONLY | |
4674 | || val == PRINT_SRC_AND_LOC | |
4675 | || val == PRINT_NOTHING) | |
4676 | return val; | |
4677 | } | |
c906108c | 4678 | |
36dfb11c TT |
4679 | /* If we had hit a shared library event breakpoint, |
4680 | print_bp_stop_message would print out this message. If we hit an | |
4681 | OS-level shared library event, do the same thing. */ | |
4682 | if (kind == TARGET_WAITKIND_LOADED) | |
4683 | { | |
edcc5120 | 4684 | print_solib_event (0); |
36dfb11c TT |
4685 | return PRINT_NOTHING; |
4686 | } | |
4687 | ||
e514a9d6 | 4688 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4689 | with and nothing was printed. */ |
917317f4 | 4690 | return PRINT_UNKNOWN; |
c906108c SS |
4691 | } |
4692 | ||
bf469271 | 4693 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4694 | |
bf469271 PA |
4695 | static bool |
4696 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4697 | { |
278cd55f | 4698 | struct value *mark = value_mark (); |
bf469271 | 4699 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4700 | |
c906108c | 4701 | value_free_to_mark (mark); |
bf469271 | 4702 | return res; |
c906108c SS |
4703 | } |
4704 | ||
5760d0ab | 4705 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4706 | |
04afa70c TT |
4707 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4708 | : next (NULL), | |
4709 | bp_location_at (bl), | |
4710 | breakpoint_at (bl->owner), | |
4711 | commands (NULL), | |
04afa70c TT |
4712 | print (0), |
4713 | stop (0), | |
4714 | print_it (print_it_normal) | |
c906108c | 4715 | { |
f431efe5 | 4716 | incref_bp_location (bl); |
04afa70c TT |
4717 | **bs_link_pointer = this; |
4718 | *bs_link_pointer = &next; | |
4719 | } | |
4720 | ||
4721 | bpstats::bpstats () | |
4722 | : next (NULL), | |
4723 | bp_location_at (NULL), | |
4724 | breakpoint_at (NULL), | |
4725 | commands (NULL), | |
04afa70c TT |
4726 | print (0), |
4727 | stop (0), | |
4728 | print_it (print_it_normal) | |
4729 | { | |
c906108c SS |
4730 | } |
4731 | \f | |
d983da9c DJ |
4732 | /* The target has stopped with waitstatus WS. Check if any hardware |
4733 | watchpoints have triggered, according to the target. */ | |
4734 | ||
4735 | int | |
4736 | watchpoints_triggered (struct target_waitstatus *ws) | |
4737 | { | |
57810aa7 | 4738 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4739 | CORE_ADDR addr; |
4740 | struct breakpoint *b; | |
4741 | ||
4742 | if (!stopped_by_watchpoint) | |
4743 | { | |
4744 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4745 | as not triggered. */ | |
4746 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4747 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4748 | { |
4749 | struct watchpoint *w = (struct watchpoint *) b; | |
4750 | ||
4751 | w->watchpoint_triggered = watch_triggered_no; | |
4752 | } | |
d983da9c DJ |
4753 | |
4754 | return 0; | |
4755 | } | |
4756 | ||
8b88a78e | 4757 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4758 | { |
4759 | /* We were stopped by a watchpoint, but we don't know where. | |
4760 | Mark all watchpoints as unknown. */ | |
4761 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4762 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4763 | { |
4764 | struct watchpoint *w = (struct watchpoint *) b; | |
4765 | ||
4766 | w->watchpoint_triggered = watch_triggered_unknown; | |
4767 | } | |
d983da9c | 4768 | |
3c4797ba | 4769 | return 1; |
d983da9c DJ |
4770 | } |
4771 | ||
4772 | /* The target could report the data address. Mark watchpoints | |
4773 | affected by this data address as triggered, and all others as not | |
4774 | triggered. */ | |
4775 | ||
4776 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4777 | if (is_hardware_watchpoint (b)) |
d983da9c | 4778 | { |
3a5c3e22 | 4779 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4780 | struct bp_location *loc; |
d983da9c | 4781 | |
3a5c3e22 | 4782 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4783 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4784 | { |
3a5c3e22 | 4785 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4786 | { |
3a5c3e22 PA |
4787 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4788 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4789 | |
4790 | if (newaddr == start) | |
4791 | { | |
3a5c3e22 | 4792 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4793 | break; |
4794 | } | |
4795 | } | |
4796 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4797 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4798 | addr, loc->address, |
4799 | loc->length)) | |
4800 | { | |
3a5c3e22 | 4801 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4802 | break; |
4803 | } | |
4804 | } | |
d983da9c DJ |
4805 | } |
4806 | ||
4807 | return 1; | |
4808 | } | |
4809 | ||
bf469271 PA |
4810 | /* Possible return values for watchpoint_check. */ |
4811 | enum wp_check_result | |
4812 | { | |
4813 | /* The watchpoint has been deleted. */ | |
4814 | WP_DELETED = 1, | |
4815 | ||
4816 | /* The value has changed. */ | |
4817 | WP_VALUE_CHANGED = 2, | |
4818 | ||
4819 | /* The value has not changed. */ | |
4820 | WP_VALUE_NOT_CHANGED = 3, | |
4821 | ||
4822 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4823 | WP_IGNORE = 4, | |
4824 | }; | |
c906108c SS |
4825 | |
4826 | #define BP_TEMPFLAG 1 | |
4827 | #define BP_HARDWAREFLAG 2 | |
4828 | ||
4a64f543 | 4829 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4830 | changed. */ |
553e4c11 | 4831 | |
bf469271 PA |
4832 | static wp_check_result |
4833 | watchpoint_check (bpstat bs) | |
c906108c | 4834 | { |
3a5c3e22 | 4835 | struct watchpoint *b; |
c906108c SS |
4836 | struct frame_info *fr; |
4837 | int within_current_scope; | |
4838 | ||
f431efe5 | 4839 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4840 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4841 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4842 | |
f6bc2008 PA |
4843 | /* If this is a local watchpoint, we only want to check if the |
4844 | watchpoint frame is in scope if the current thread is the thread | |
4845 | that was used to create the watchpoint. */ | |
4846 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4847 | return WP_IGNORE; |
f6bc2008 | 4848 | |
c906108c SS |
4849 | if (b->exp_valid_block == NULL) |
4850 | within_current_scope = 1; | |
4851 | else | |
4852 | { | |
edb3359d DJ |
4853 | struct frame_info *frame = get_current_frame (); |
4854 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4855 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4856 | ||
c9cf6e20 | 4857 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4858 | still in the function but the stack frame has already been |
4859 | invalidated. Since we can't rely on the values of local | |
4860 | variables after the stack has been destroyed, we are treating | |
4861 | the watchpoint in that state as `not changed' without further | |
4862 | checking. Don't mark watchpoints as changed if the current | |
4863 | frame is in an epilogue - even if they are in some other | |
4864 | frame, our view of the stack is likely to be wrong and | |
4865 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4866 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4867 | return WP_IGNORE; |
a0f49112 | 4868 | |
101dcfbe | 4869 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4870 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4871 | |
4872 | /* If we've gotten confused in the unwinder, we might have | |
4873 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4874 | if (within_current_scope) |
4875 | { | |
4876 | struct symbol *function; | |
4877 | ||
4878 | function = get_frame_function (fr); | |
4879 | if (function == NULL | |
4880 | || !contained_in (b->exp_valid_block, | |
4881 | SYMBOL_BLOCK_VALUE (function))) | |
4882 | within_current_scope = 0; | |
4883 | } | |
69fbadd5 | 4884 | |
edb3359d | 4885 | if (within_current_scope) |
c906108c SS |
4886 | /* If we end up stopping, the current frame will get selected |
4887 | in normal_stop. So this call to select_frame won't affect | |
4888 | the user. */ | |
0f7d239c | 4889 | select_frame (fr); |
c906108c | 4890 | } |
c5aa993b | 4891 | |
c906108c SS |
4892 | if (within_current_scope) |
4893 | { | |
4a64f543 MS |
4894 | /* We use value_{,free_to_}mark because it could be a *long* |
4895 | time before we return to the command level and call | |
4896 | free_all_values. We can't call free_all_values because we | |
4897 | might be in the middle of evaluating a function call. */ | |
c906108c | 4898 | |
0cf6dd15 | 4899 | int pc = 0; |
9c06b0b4 | 4900 | struct value *mark; |
fa4727a6 DJ |
4901 | struct value *new_val; |
4902 | ||
c1fc2657 | 4903 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4904 | /* Since we don't know the exact trigger address (from |
4905 | stopped_data_address), just tell the user we've triggered | |
4906 | a mask watchpoint. */ | |
4907 | return WP_VALUE_CHANGED; | |
4908 | ||
4909 | mark = value_mark (); | |
4d01a485 | 4910 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4911 | |
bb9d5f81 PP |
4912 | if (b->val_bitsize != 0) |
4913 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4914 | ||
4a64f543 MS |
4915 | /* We use value_equal_contents instead of value_equal because |
4916 | the latter coerces an array to a pointer, thus comparing just | |
4917 | the address of the array instead of its contents. This is | |
4918 | not what we want. */ | |
fa4727a6 | 4919 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4920 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4921 | new_val))) | |
c906108c | 4922 | { |
c906108c | 4923 | bs->old_val = b->val; |
850645cf | 4924 | b->val = release_value (new_val); |
fa4727a6 | 4925 | b->val_valid = 1; |
850645cf TT |
4926 | if (new_val != NULL) |
4927 | value_free_to_mark (mark); | |
c906108c SS |
4928 | return WP_VALUE_CHANGED; |
4929 | } | |
4930 | else | |
4931 | { | |
60e1c644 | 4932 | /* Nothing changed. */ |
c906108c | 4933 | value_free_to_mark (mark); |
c906108c SS |
4934 | return WP_VALUE_NOT_CHANGED; |
4935 | } | |
4936 | } | |
4937 | else | |
4938 | { | |
4939 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4940 | if we temporarily ignored the watchpoint, then when |
4941 | we reenter the block in which it is valid it contains | |
4942 | garbage (in the case of a function, it may have two | |
4943 | garbage values, one before and one after the prologue). | |
4944 | So we can't even detect the first assignment to it and | |
4945 | watch after that (since the garbage may or may not equal | |
4946 | the first value assigned). */ | |
348d480f PA |
4947 | /* We print all the stop information in |
4948 | breakpoint_ops->print_it, but in this case, by the time we | |
4949 | call breakpoint_ops->print_it this bp will be deleted | |
4950 | already. So we have no choice but print the information | |
4951 | here. */ | |
468afe6c | 4952 | |
0e454242 | 4953 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4954 | { |
4955 | struct ui_out *uiout = current_uiout; | |
4956 | ||
112e8700 SM |
4957 | if (uiout->is_mi_like_p ()) |
4958 | uiout->field_string | |
4959 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4960 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4961 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4962 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4963 | "which its expression is valid.\n"); |
4964 | } | |
4ce44c66 | 4965 | |
cdac0397 | 4966 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4967 | b->commands = NULL; |
d0fb5eae | 4968 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4969 | |
4970 | return WP_DELETED; | |
4971 | } | |
4972 | } | |
4973 | ||
18a18393 | 4974 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4975 | breakpoint location BL. This function does not check if we should |
4976 | stop, only if BL explains the stop. */ | |
4977 | ||
18a18393 | 4978 | static int |
6c95b8df | 4979 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4980 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4981 | const struct target_waitstatus *ws) |
18a18393 VP |
4982 | { |
4983 | struct breakpoint *b = bl->owner; | |
4984 | ||
348d480f | 4985 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4986 | gdb_assert (b != NULL); |
4987 | ||
bd522513 | 4988 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4989 | } |
4990 | ||
3a5c3e22 PA |
4991 | /* Determine if the watched values have actually changed, and we |
4992 | should stop. If not, set BS->stop to 0. */ | |
4993 | ||
18a18393 VP |
4994 | static void |
4995 | bpstat_check_watchpoint (bpstat bs) | |
4996 | { | |
2bdf28a0 | 4997 | const struct bp_location *bl; |
3a5c3e22 | 4998 | struct watchpoint *b; |
2bdf28a0 JK |
4999 | |
5000 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5001 | bl = bs->bp_location_at; |
2bdf28a0 | 5002 | gdb_assert (bl != NULL); |
3a5c3e22 | 5003 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5004 | gdb_assert (b != NULL); |
18a18393 | 5005 | |
18a18393 | 5006 | { |
18a18393 VP |
5007 | int must_check_value = 0; |
5008 | ||
c1fc2657 | 5009 | if (b->type == bp_watchpoint) |
18a18393 VP |
5010 | /* For a software watchpoint, we must always check the |
5011 | watched value. */ | |
5012 | must_check_value = 1; | |
5013 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5014 | /* We have a hardware watchpoint (read, write, or access) | |
5015 | and the target earlier reported an address watched by | |
5016 | this watchpoint. */ | |
5017 | must_check_value = 1; | |
5018 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5019 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5020 | /* We were stopped by a hardware watchpoint, but the target could |
5021 | not report the data address. We must check the watchpoint's | |
5022 | value. Access and read watchpoints are out of luck; without | |
5023 | a data address, we can't figure it out. */ | |
5024 | must_check_value = 1; | |
3a5c3e22 | 5025 | |
18a18393 VP |
5026 | if (must_check_value) |
5027 | { | |
bf469271 PA |
5028 | wp_check_result e; |
5029 | ||
5030 | TRY | |
5031 | { | |
5032 | e = watchpoint_check (bs); | |
5033 | } | |
5034 | CATCH (ex, RETURN_MASK_ALL) | |
5035 | { | |
5036 | exception_fprintf (gdb_stderr, ex, | |
5037 | "Error evaluating expression " | |
5038 | "for watchpoint %d\n", | |
5039 | b->number); | |
5040 | ||
5041 | SWITCH_THRU_ALL_UIS () | |
5042 | { | |
5043 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5044 | b->number); | |
5045 | } | |
5046 | watchpoint_del_at_next_stop (b); | |
5047 | e = WP_DELETED; | |
5048 | } | |
5049 | END_CATCH | |
5050 | ||
18a18393 VP |
5051 | switch (e) |
5052 | { | |
5053 | case WP_DELETED: | |
5054 | /* We've already printed what needs to be printed. */ | |
5055 | bs->print_it = print_it_done; | |
5056 | /* Stop. */ | |
5057 | break; | |
60e1c644 PA |
5058 | case WP_IGNORE: |
5059 | bs->print_it = print_it_noop; | |
5060 | bs->stop = 0; | |
5061 | break; | |
18a18393 | 5062 | case WP_VALUE_CHANGED: |
c1fc2657 | 5063 | if (b->type == bp_read_watchpoint) |
18a18393 | 5064 | { |
85d721b8 PA |
5065 | /* There are two cases to consider here: |
5066 | ||
4a64f543 | 5067 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5068 | In that case, trust the target, and always report |
5069 | the watchpoint hit to the user. Even though | |
5070 | reads don't cause value changes, the value may | |
5071 | have changed since the last time it was read, and | |
5072 | since we're not trapping writes, we will not see | |
5073 | those, and as such we should ignore our notion of | |
5074 | old value. | |
5075 | ||
4a64f543 | 5076 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5077 | reads and writes. There are two ways this may |
5078 | happen: | |
5079 | ||
4a64f543 | 5080 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5081 | reads only, but can break on accesses (reads or |
5082 | writes), such as e.g., x86. We detect this case | |
5083 | at the time we try to insert read watchpoints. | |
5084 | ||
4a64f543 | 5085 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5086 | watchpoints, but, the user set an access or write |
5087 | watchpoint watching the same memory as this read | |
5088 | watchpoint. | |
5089 | ||
5090 | If we're watching memory writes as well as reads, | |
5091 | ignore watchpoint hits when we find that the | |
5092 | value hasn't changed, as reads don't cause | |
5093 | changes. This still gives false positives when | |
5094 | the program writes the same value to memory as | |
5095 | what there was already in memory (we will confuse | |
5096 | it for a read), but it's much better than | |
5097 | nothing. */ | |
5098 | ||
5099 | int other_write_watchpoint = 0; | |
5100 | ||
5101 | if (bl->watchpoint_type == hw_read) | |
5102 | { | |
5103 | struct breakpoint *other_b; | |
5104 | ||
5105 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5106 | if (other_b->type == bp_hardware_watchpoint |
5107 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5108 | { |
3a5c3e22 PA |
5109 | struct watchpoint *other_w = |
5110 | (struct watchpoint *) other_b; | |
5111 | ||
5112 | if (other_w->watchpoint_triggered | |
5113 | == watch_triggered_yes) | |
5114 | { | |
5115 | other_write_watchpoint = 1; | |
5116 | break; | |
5117 | } | |
85d721b8 PA |
5118 | } |
5119 | } | |
5120 | ||
5121 | if (other_write_watchpoint | |
5122 | || bl->watchpoint_type == hw_access) | |
5123 | { | |
5124 | /* We're watching the same memory for writes, | |
5125 | and the value changed since the last time we | |
5126 | updated it, so this trap must be for a write. | |
5127 | Ignore it. */ | |
5128 | bs->print_it = print_it_noop; | |
5129 | bs->stop = 0; | |
5130 | } | |
18a18393 VP |
5131 | } |
5132 | break; | |
5133 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5134 | if (b->type == bp_hardware_watchpoint |
5135 | || b->type == bp_watchpoint) | |
18a18393 VP |
5136 | { |
5137 | /* Don't stop: write watchpoints shouldn't fire if | |
5138 | the value hasn't changed. */ | |
5139 | bs->print_it = print_it_noop; | |
5140 | bs->stop = 0; | |
5141 | } | |
5142 | /* Stop. */ | |
5143 | break; | |
5144 | default: | |
5145 | /* Can't happen. */ | |
18a18393 VP |
5146 | break; |
5147 | } | |
5148 | } | |
5149 | else /* must_check_value == 0 */ | |
5150 | { | |
5151 | /* This is a case where some watchpoint(s) triggered, but | |
5152 | not at the address of this watchpoint, or else no | |
5153 | watchpoint triggered after all. So don't print | |
5154 | anything for this watchpoint. */ | |
5155 | bs->print_it = print_it_noop; | |
5156 | bs->stop = 0; | |
5157 | } | |
5158 | } | |
5159 | } | |
5160 | ||
7d4df6a4 DE |
5161 | /* For breakpoints that are currently marked as telling gdb to stop, |
5162 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5163 | of breakpoint referred to by BS. If we should not stop for this |
5164 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5165 | |
18a18393 | 5166 | static void |
00431a78 | 5167 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5168 | { |
2bdf28a0 JK |
5169 | const struct bp_location *bl; |
5170 | struct breakpoint *b; | |
bf469271 PA |
5171 | /* Assume stop. */ |
5172 | bool condition_result = true; | |
7d4df6a4 DE |
5173 | struct expression *cond; |
5174 | ||
5175 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5176 | |
5177 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5178 | bl = bs->bp_location_at; |
2bdf28a0 | 5179 | gdb_assert (bl != NULL); |
f431efe5 | 5180 | b = bs->breakpoint_at; |
2bdf28a0 | 5181 | gdb_assert (b != NULL); |
18a18393 | 5182 | |
b775012e LM |
5183 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5184 | need to do so again since GDB does not know if we stopped due to a | |
5185 | breakpoint or a single step breakpoint. */ | |
5186 | ||
18a18393 | 5187 | if (frame_id_p (b->frame_id) |
edb3359d | 5188 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5189 | { |
7d4df6a4 DE |
5190 | bs->stop = 0; |
5191 | return; | |
5192 | } | |
60e1c644 | 5193 | |
12ab52e9 PA |
5194 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5195 | evaluating the condition if this isn't the specified | |
5196 | thread/task. */ | |
00431a78 PA |
5197 | if ((b->thread != -1 && b->thread != thread->global_num) |
5198 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5199 | { |
5200 | bs->stop = 0; | |
5201 | return; | |
5202 | } | |
5203 | ||
6dddc817 DE |
5204 | /* Evaluate extension language breakpoints that have a "stop" method |
5205 | implemented. */ | |
5206 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5207 | |
7d4df6a4 DE |
5208 | if (is_watchpoint (b)) |
5209 | { | |
5210 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5211 | |
4d01a485 | 5212 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5213 | } |
5214 | else | |
4d01a485 | 5215 | cond = bl->cond.get (); |
60e1c644 | 5216 | |
7d4df6a4 DE |
5217 | if (cond && b->disposition != disp_del_at_next_stop) |
5218 | { | |
5219 | int within_current_scope = 1; | |
5220 | struct watchpoint * w; | |
60e1c644 | 5221 | |
7d4df6a4 DE |
5222 | /* We use value_mark and value_free_to_mark because it could |
5223 | be a long time before we return to the command level and | |
5224 | call free_all_values. We can't call free_all_values | |
5225 | because we might be in the middle of evaluating a | |
5226 | function call. */ | |
5227 | struct value *mark = value_mark (); | |
5228 | ||
5229 | if (is_watchpoint (b)) | |
5230 | w = (struct watchpoint *) b; | |
5231 | else | |
5232 | w = NULL; | |
5233 | ||
5234 | /* Need to select the frame, with all that implies so that | |
5235 | the conditions will have the right context. Because we | |
5236 | use the frame, we will not see an inlined function's | |
5237 | variables when we arrive at a breakpoint at the start | |
5238 | of the inlined function; the current frame will be the | |
5239 | call site. */ | |
5240 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5241 | select_frame (get_current_frame ()); | |
5242 | else | |
18a18393 | 5243 | { |
7d4df6a4 DE |
5244 | struct frame_info *frame; |
5245 | ||
5246 | /* For local watchpoint expressions, which particular | |
5247 | instance of a local is being watched matters, so we | |
5248 | keep track of the frame to evaluate the expression | |
5249 | in. To evaluate the condition however, it doesn't | |
5250 | really matter which instantiation of the function | |
5251 | where the condition makes sense triggers the | |
5252 | watchpoint. This allows an expression like "watch | |
5253 | global if q > 10" set in `func', catch writes to | |
5254 | global on all threads that call `func', or catch | |
5255 | writes on all recursive calls of `func' by a single | |
5256 | thread. We simply always evaluate the condition in | |
5257 | the innermost frame that's executing where it makes | |
5258 | sense to evaluate the condition. It seems | |
5259 | intuitive. */ | |
5260 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5261 | if (frame != NULL) | |
5262 | select_frame (frame); | |
5263 | else | |
5264 | within_current_scope = 0; | |
18a18393 | 5265 | } |
7d4df6a4 | 5266 | if (within_current_scope) |
bf469271 PA |
5267 | { |
5268 | TRY | |
5269 | { | |
5270 | condition_result = breakpoint_cond_eval (cond); | |
5271 | } | |
5272 | CATCH (ex, RETURN_MASK_ALL) | |
5273 | { | |
5274 | exception_fprintf (gdb_stderr, ex, | |
5275 | "Error in testing breakpoint condition:\n"); | |
5276 | } | |
5277 | END_CATCH | |
5278 | } | |
7d4df6a4 | 5279 | else |
18a18393 | 5280 | { |
7d4df6a4 DE |
5281 | warning (_("Watchpoint condition cannot be tested " |
5282 | "in the current scope")); | |
5283 | /* If we failed to set the right context for this | |
5284 | watchpoint, unconditionally report it. */ | |
18a18393 | 5285 | } |
7d4df6a4 DE |
5286 | /* FIXME-someday, should give breakpoint #. */ |
5287 | value_free_to_mark (mark); | |
18a18393 | 5288 | } |
7d4df6a4 | 5289 | |
bf469271 | 5290 | if (cond && !condition_result) |
7d4df6a4 DE |
5291 | { |
5292 | bs->stop = 0; | |
5293 | } | |
7d4df6a4 DE |
5294 | else if (b->ignore_count > 0) |
5295 | { | |
5296 | b->ignore_count--; | |
5297 | bs->stop = 0; | |
5298 | /* Increase the hit count even though we don't stop. */ | |
5299 | ++(b->hit_count); | |
76727919 | 5300 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5301 | } |
18a18393 VP |
5302 | } |
5303 | ||
1cf4d951 PA |
5304 | /* Returns true if we need to track moribund locations of LOC's type |
5305 | on the current target. */ | |
5306 | ||
5307 | static int | |
5308 | need_moribund_for_location_type (struct bp_location *loc) | |
5309 | { | |
5310 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5311 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5312 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5313 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5314 | } | |
5315 | ||
ddfe970e | 5316 | /* See breakpoint.h. */ |
c906108c SS |
5317 | |
5318 | bpstat | |
ddfe970e | 5319 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5320 | const struct target_waitstatus *ws) |
c906108c | 5321 | { |
ddfe970e | 5322 | struct breakpoint *b; |
5760d0ab | 5323 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5324 | |
429374b8 JK |
5325 | ALL_BREAKPOINTS (b) |
5326 | { | |
1a853c52 | 5327 | if (!breakpoint_enabled (b)) |
429374b8 | 5328 | continue; |
a5606eee | 5329 | |
ddfe970e | 5330 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5331 | { |
4a64f543 MS |
5332 | /* For hardware watchpoints, we look only at the first |
5333 | location. The watchpoint_check function will work on the | |
5334 | entire expression, not the individual locations. For | |
5335 | read watchpoints, the watchpoints_triggered function has | |
5336 | checked all locations already. */ | |
429374b8 JK |
5337 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5338 | break; | |
18a18393 | 5339 | |
f6592439 | 5340 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5341 | continue; |
c5aa993b | 5342 | |
09ac7c10 | 5343 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5344 | continue; |
c5aa993b | 5345 | |
4a64f543 MS |
5346 | /* Come here if it's a watchpoint, or if the break address |
5347 | matches. */ | |
c5aa993b | 5348 | |
ddfe970e KS |
5349 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5350 | explain stop. */ | |
c5aa993b | 5351 | |
f431efe5 PA |
5352 | /* Assume we stop. Should we find a watchpoint that is not |
5353 | actually triggered, or if the condition of the breakpoint | |
5354 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5355 | bs->stop = 1; |
5356 | bs->print = 1; | |
d983da9c | 5357 | |
f431efe5 PA |
5358 | /* If this is a scope breakpoint, mark the associated |
5359 | watchpoint as triggered so that we will handle the | |
5360 | out-of-scope event. We'll get to the watchpoint next | |
5361 | iteration. */ | |
d0fb5eae | 5362 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5363 | { |
5364 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5365 | ||
5366 | w->watchpoint_triggered = watch_triggered_yes; | |
5367 | } | |
f431efe5 PA |
5368 | } |
5369 | } | |
5370 | ||
7c16b83e | 5371 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5372 | if (!target_supports_stopped_by_sw_breakpoint () |
5373 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5374 | { |
ddfe970e KS |
5375 | bp_location *loc; |
5376 | ||
5377 | for (int ix = 0; | |
5378 | VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f431efe5 | 5379 | { |
1cf4d951 PA |
5380 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5381 | && need_moribund_for_location_type (loc)) | |
5382 | { | |
ddfe970e | 5383 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5384 | /* For hits of moribund locations, we should just proceed. */ |
5385 | bs->stop = 0; | |
5386 | bs->print = 0; | |
5387 | bs->print_it = print_it_noop; | |
5388 | } | |
f431efe5 PA |
5389 | } |
5390 | } | |
5391 | ||
ddfe970e KS |
5392 | return bs_head; |
5393 | } | |
5394 | ||
5395 | /* See breakpoint.h. */ | |
5396 | ||
5397 | bpstat | |
5398 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5399 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5400 | const struct target_waitstatus *ws, |
5401 | bpstat stop_chain) | |
5402 | { | |
5403 | struct breakpoint *b = NULL; | |
5404 | /* First item of allocated bpstat's. */ | |
5405 | bpstat bs_head = stop_chain; | |
5406 | bpstat bs; | |
5407 | int need_remove_insert; | |
5408 | int removed_any; | |
5409 | ||
5410 | /* First, build the bpstat chain with locations that explain a | |
5411 | target stop, while being careful to not set the target running, | |
5412 | as that may invalidate locations (in particular watchpoint | |
5413 | locations are recreated). Resuming will happen here with | |
5414 | breakpoint conditions or watchpoint expressions that include | |
5415 | inferior function calls. */ | |
5416 | if (bs_head == NULL) | |
5417 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5418 | ||
edcc5120 TT |
5419 | /* A bit of special processing for shlib breakpoints. We need to |
5420 | process solib loading here, so that the lists of loaded and | |
5421 | unloaded libraries are correct before we handle "catch load" and | |
5422 | "catch unload". */ | |
5423 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5424 | { | |
5d268276 | 5425 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5426 | { |
5427 | handle_solib_event (); | |
5428 | break; | |
5429 | } | |
5430 | } | |
5431 | ||
f431efe5 PA |
5432 | /* Now go through the locations that caused the target to stop, and |
5433 | check whether we're interested in reporting this stop to higher | |
5434 | layers, or whether we should resume the target transparently. */ | |
5435 | ||
5436 | removed_any = 0; | |
5437 | ||
5760d0ab | 5438 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5439 | { |
5440 | if (!bs->stop) | |
5441 | continue; | |
5442 | ||
f431efe5 | 5443 | b = bs->breakpoint_at; |
348d480f PA |
5444 | b->ops->check_status (bs); |
5445 | if (bs->stop) | |
28010a5d | 5446 | { |
00431a78 | 5447 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5448 | |
429374b8 JK |
5449 | if (bs->stop) |
5450 | { | |
5451 | ++(b->hit_count); | |
76727919 | 5452 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5453 | |
4a64f543 | 5454 | /* We will stop here. */ |
429374b8 JK |
5455 | if (b->disposition == disp_disable) |
5456 | { | |
816338b5 | 5457 | --(b->enable_count); |
1a853c52 | 5458 | if (b->enable_count <= 0) |
429374b8 | 5459 | b->enable_state = bp_disabled; |
f431efe5 | 5460 | removed_any = 1; |
429374b8 JK |
5461 | } |
5462 | if (b->silent) | |
5463 | bs->print = 0; | |
5464 | bs->commands = b->commands; | |
abf85f46 | 5465 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5466 | ? bs->commands.get () : NULL)) |
abf85f46 | 5467 | bs->print = 0; |
9d6e6e84 HZ |
5468 | |
5469 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5470 | } |
5471 | ||
348d480f | 5472 | } |
a9b3a50f PA |
5473 | |
5474 | /* Print nothing for this entry if we don't stop or don't | |
5475 | print. */ | |
5476 | if (!bs->stop || !bs->print) | |
5477 | bs->print_it = print_it_noop; | |
429374b8 | 5478 | } |
876fa593 | 5479 | |
d983da9c DJ |
5480 | /* If we aren't stopping, the value of some hardware watchpoint may |
5481 | not have changed, but the intermediate memory locations we are | |
5482 | watching may have. Don't bother if we're stopping; this will get | |
5483 | done later. */ | |
d832cb68 | 5484 | need_remove_insert = 0; |
5760d0ab JK |
5485 | if (! bpstat_causes_stop (bs_head)) |
5486 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5487 | if (!bs->stop |
f431efe5 PA |
5488 | && bs->breakpoint_at |
5489 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5490 | { |
3a5c3e22 PA |
5491 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5492 | ||
5493 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5494 | need_remove_insert = 1; |
d983da9c DJ |
5495 | } |
5496 | ||
d832cb68 | 5497 | if (need_remove_insert) |
44702360 | 5498 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5499 | else if (removed_any) |
44702360 | 5500 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5501 | |
5760d0ab | 5502 | return bs_head; |
c906108c | 5503 | } |
628fe4e4 JK |
5504 | |
5505 | static void | |
5506 | handle_jit_event (void) | |
5507 | { | |
5508 | struct frame_info *frame; | |
5509 | struct gdbarch *gdbarch; | |
5510 | ||
243a9253 PA |
5511 | if (debug_infrun) |
5512 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5513 | ||
628fe4e4 JK |
5514 | /* Switch terminal for any messages produced by |
5515 | breakpoint_re_set. */ | |
223ffa71 | 5516 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5517 | |
5518 | frame = get_current_frame (); | |
5519 | gdbarch = get_frame_arch (frame); | |
5520 | ||
5521 | jit_event_handler (gdbarch); | |
5522 | ||
223ffa71 | 5523 | target_terminal::inferior (); |
628fe4e4 JK |
5524 | } |
5525 | ||
5526 | /* Prepare WHAT final decision for infrun. */ | |
5527 | ||
5528 | /* Decide what infrun needs to do with this bpstat. */ | |
5529 | ||
c906108c | 5530 | struct bpstat_what |
0e30163f | 5531 | bpstat_what (bpstat bs_head) |
c906108c | 5532 | { |
c906108c | 5533 | struct bpstat_what retval; |
0e30163f | 5534 | bpstat bs; |
c906108c | 5535 | |
628fe4e4 | 5536 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5537 | retval.call_dummy = STOP_NONE; |
186c406b | 5538 | retval.is_longjmp = 0; |
628fe4e4 | 5539 | |
0e30163f | 5540 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5541 | { |
628fe4e4 JK |
5542 | /* Extract this BS's action. After processing each BS, we check |
5543 | if its action overrides all we've seem so far. */ | |
5544 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5545 | enum bptype bptype; | |
5546 | ||
c906108c | 5547 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5548 | { |
5549 | /* I suspect this can happen if it was a momentary | |
5550 | breakpoint which has since been deleted. */ | |
5551 | bptype = bp_none; | |
5552 | } | |
20874c92 | 5553 | else |
f431efe5 | 5554 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5555 | |
5556 | switch (bptype) | |
c906108c SS |
5557 | { |
5558 | case bp_none: | |
628fe4e4 | 5559 | break; |
c906108c SS |
5560 | case bp_breakpoint: |
5561 | case bp_hardware_breakpoint: | |
7c16b83e | 5562 | case bp_single_step: |
c906108c SS |
5563 | case bp_until: |
5564 | case bp_finish: | |
a9b3a50f | 5565 | case bp_shlib_event: |
c906108c SS |
5566 | if (bs->stop) |
5567 | { | |
5568 | if (bs->print) | |
628fe4e4 | 5569 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5570 | else |
628fe4e4 | 5571 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5572 | } |
5573 | else | |
628fe4e4 | 5574 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5575 | break; |
5576 | case bp_watchpoint: | |
5577 | case bp_hardware_watchpoint: | |
5578 | case bp_read_watchpoint: | |
5579 | case bp_access_watchpoint: | |
5580 | if (bs->stop) | |
5581 | { | |
5582 | if (bs->print) | |
628fe4e4 | 5583 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5584 | else |
628fe4e4 | 5585 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5586 | } |
5587 | else | |
628fe4e4 JK |
5588 | { |
5589 | /* There was a watchpoint, but we're not stopping. | |
5590 | This requires no further action. */ | |
5591 | } | |
c906108c SS |
5592 | break; |
5593 | case bp_longjmp: | |
e2e4d78b | 5594 | case bp_longjmp_call_dummy: |
186c406b | 5595 | case bp_exception: |
0a39bb32 PA |
5596 | if (bs->stop) |
5597 | { | |
5598 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5599 | retval.is_longjmp = bptype != bp_exception; | |
5600 | } | |
5601 | else | |
5602 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5603 | break; |
5604 | case bp_longjmp_resume: | |
186c406b | 5605 | case bp_exception_resume: |
0a39bb32 PA |
5606 | if (bs->stop) |
5607 | { | |
5608 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5609 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5610 | } | |
5611 | else | |
5612 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5613 | break; |
5614 | case bp_step_resume: | |
5615 | if (bs->stop) | |
628fe4e4 JK |
5616 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5617 | else | |
c906108c | 5618 | { |
628fe4e4 JK |
5619 | /* It is for the wrong frame. */ |
5620 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5621 | } |
c906108c | 5622 | break; |
2c03e5be PA |
5623 | case bp_hp_step_resume: |
5624 | if (bs->stop) | |
5625 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5626 | else | |
5627 | { | |
5628 | /* It is for the wrong frame. */ | |
5629 | this_action = BPSTAT_WHAT_SINGLE; | |
5630 | } | |
5631 | break; | |
c906108c | 5632 | case bp_watchpoint_scope: |
c4093a6a | 5633 | case bp_thread_event: |
1900040c | 5634 | case bp_overlay_event: |
0fd8e87f | 5635 | case bp_longjmp_master: |
aa7d318d | 5636 | case bp_std_terminate_master: |
186c406b | 5637 | case bp_exception_master: |
628fe4e4 | 5638 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5639 | break; |
ce78b96d | 5640 | case bp_catchpoint: |
c5aa993b JM |
5641 | if (bs->stop) |
5642 | { | |
5643 | if (bs->print) | |
628fe4e4 | 5644 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5645 | else |
628fe4e4 | 5646 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5647 | } |
5648 | else | |
628fe4e4 JK |
5649 | { |
5650 | /* There was a catchpoint, but we're not stopping. | |
5651 | This requires no further action. */ | |
5652 | } | |
5653 | break; | |
628fe4e4 | 5654 | case bp_jit_event: |
628fe4e4 | 5655 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5656 | break; |
c906108c | 5657 | case bp_call_dummy: |
53a5351d JM |
5658 | /* Make sure the action is stop (silent or noisy), |
5659 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5660 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5661 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5662 | break; |
5663 | case bp_std_terminate: | |
5664 | /* Make sure the action is stop (silent or noisy), | |
5665 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5666 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5667 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5668 | break; |
1042e4c0 | 5669 | case bp_tracepoint: |
7a697b8d | 5670 | case bp_fast_tracepoint: |
0fb4aa4b | 5671 | case bp_static_tracepoint: |
1042e4c0 SS |
5672 | /* Tracepoint hits should not be reported back to GDB, and |
5673 | if one got through somehow, it should have been filtered | |
5674 | out already. */ | |
5675 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5676 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5677 | break; |
5678 | case bp_gnu_ifunc_resolver: | |
5679 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5680 | this_action = BPSTAT_WHAT_SINGLE; | |
5681 | break; | |
5682 | case bp_gnu_ifunc_resolver_return: | |
5683 | /* The breakpoint will be removed, execution will restart from the | |
5684 | PC of the former breakpoint. */ | |
5685 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5686 | break; | |
e7e0cddf SS |
5687 | |
5688 | case bp_dprintf: | |
a11cfd87 HZ |
5689 | if (bs->stop) |
5690 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5691 | else | |
5692 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5693 | break; |
5694 | ||
628fe4e4 JK |
5695 | default: |
5696 | internal_error (__FILE__, __LINE__, | |
5697 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5698 | } |
628fe4e4 | 5699 | |
325fac50 | 5700 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5701 | } |
628fe4e4 | 5702 | |
243a9253 PA |
5703 | return retval; |
5704 | } | |
628fe4e4 | 5705 | |
243a9253 PA |
5706 | void |
5707 | bpstat_run_callbacks (bpstat bs_head) | |
5708 | { | |
5709 | bpstat bs; | |
628fe4e4 | 5710 | |
0e30163f JK |
5711 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5712 | { | |
5713 | struct breakpoint *b = bs->breakpoint_at; | |
5714 | ||
5715 | if (b == NULL) | |
5716 | continue; | |
5717 | switch (b->type) | |
5718 | { | |
243a9253 PA |
5719 | case bp_jit_event: |
5720 | handle_jit_event (); | |
5721 | break; | |
0e30163f JK |
5722 | case bp_gnu_ifunc_resolver: |
5723 | gnu_ifunc_resolver_stop (b); | |
5724 | break; | |
5725 | case bp_gnu_ifunc_resolver_return: | |
5726 | gnu_ifunc_resolver_return_stop (b); | |
5727 | break; | |
5728 | } | |
5729 | } | |
c906108c SS |
5730 | } |
5731 | ||
5732 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5733 | without hardware support). This isn't related to a specific bpstat, | |
5734 | just to things like whether watchpoints are set. */ | |
5735 | ||
c5aa993b | 5736 | int |
fba45db2 | 5737 | bpstat_should_step (void) |
c906108c SS |
5738 | { |
5739 | struct breakpoint *b; | |
cc59ec59 | 5740 | |
c906108c | 5741 | ALL_BREAKPOINTS (b) |
717a8278 | 5742 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5743 | return 1; |
c906108c SS |
5744 | return 0; |
5745 | } | |
5746 | ||
67822962 PA |
5747 | int |
5748 | bpstat_causes_stop (bpstat bs) | |
5749 | { | |
5750 | for (; bs != NULL; bs = bs->next) | |
5751 | if (bs->stop) | |
5752 | return 1; | |
5753 | ||
5754 | return 0; | |
5755 | } | |
5756 | ||
c906108c | 5757 | \f |
c5aa993b | 5758 | |
170b53b2 UW |
5759 | /* Compute a string of spaces suitable to indent the next line |
5760 | so it starts at the position corresponding to the table column | |
5761 | named COL_NAME in the currently active table of UIOUT. */ | |
5762 | ||
5763 | static char * | |
5764 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5765 | { | |
5766 | static char wrap_indent[80]; | |
5767 | int i, total_width, width, align; | |
c5209615 | 5768 | const char *text; |
170b53b2 UW |
5769 | |
5770 | total_width = 0; | |
112e8700 | 5771 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5772 | { |
5773 | if (strcmp (text, col_name) == 0) | |
5774 | { | |
5775 | gdb_assert (total_width < sizeof wrap_indent); | |
5776 | memset (wrap_indent, ' ', total_width); | |
5777 | wrap_indent[total_width] = 0; | |
5778 | ||
5779 | return wrap_indent; | |
5780 | } | |
5781 | ||
5782 | total_width += width + 1; | |
5783 | } | |
5784 | ||
5785 | return NULL; | |
5786 | } | |
5787 | ||
b775012e LM |
5788 | /* Determine if the locations of this breakpoint will have their conditions |
5789 | evaluated by the target, host or a mix of both. Returns the following: | |
5790 | ||
5791 | "host": Host evals condition. | |
5792 | "host or target": Host or Target evals condition. | |
5793 | "target": Target evals condition. | |
5794 | */ | |
5795 | ||
5796 | static const char * | |
5797 | bp_condition_evaluator (struct breakpoint *b) | |
5798 | { | |
5799 | struct bp_location *bl; | |
5800 | char host_evals = 0; | |
5801 | char target_evals = 0; | |
5802 | ||
5803 | if (!b) | |
5804 | return NULL; | |
5805 | ||
5806 | if (!is_breakpoint (b)) | |
5807 | return NULL; | |
5808 | ||
5809 | if (gdb_evaluates_breakpoint_condition_p () | |
5810 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5811 | return condition_evaluation_host; | |
5812 | ||
5813 | for (bl = b->loc; bl; bl = bl->next) | |
5814 | { | |
5815 | if (bl->cond_bytecode) | |
5816 | target_evals++; | |
5817 | else | |
5818 | host_evals++; | |
5819 | } | |
5820 | ||
5821 | if (host_evals && target_evals) | |
5822 | return condition_evaluation_both; | |
5823 | else if (target_evals) | |
5824 | return condition_evaluation_target; | |
5825 | else | |
5826 | return condition_evaluation_host; | |
5827 | } | |
5828 | ||
5829 | /* Determine the breakpoint location's condition evaluator. This is | |
5830 | similar to bp_condition_evaluator, but for locations. */ | |
5831 | ||
5832 | static const char * | |
5833 | bp_location_condition_evaluator (struct bp_location *bl) | |
5834 | { | |
5835 | if (bl && !is_breakpoint (bl->owner)) | |
5836 | return NULL; | |
5837 | ||
5838 | if (gdb_evaluates_breakpoint_condition_p () | |
5839 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5840 | return condition_evaluation_host; | |
5841 | ||
5842 | if (bl && bl->cond_bytecode) | |
5843 | return condition_evaluation_target; | |
5844 | else | |
5845 | return condition_evaluation_host; | |
5846 | } | |
5847 | ||
859825b8 JK |
5848 | /* Print the LOC location out of the list of B->LOC locations. */ |
5849 | ||
170b53b2 UW |
5850 | static void |
5851 | print_breakpoint_location (struct breakpoint *b, | |
5852 | struct bp_location *loc) | |
0d381245 | 5853 | { |
79a45e25 | 5854 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5855 | |
5856 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5857 | |
859825b8 JK |
5858 | if (loc != NULL && loc->shlib_disabled) |
5859 | loc = NULL; | |
5860 | ||
6c95b8df PA |
5861 | if (loc != NULL) |
5862 | set_current_program_space (loc->pspace); | |
5863 | ||
56435ebe | 5864 | if (b->display_canonical) |
d28cd78a | 5865 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5866 | else if (loc && loc->symtab) |
0d381245 | 5867 | { |
4a27f119 KS |
5868 | const struct symbol *sym = loc->symbol; |
5869 | ||
0d381245 VP |
5870 | if (sym) |
5871 | { | |
112e8700 SM |
5872 | uiout->text ("in "); |
5873 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5874 | uiout->text (" "); | |
5875 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5876 | uiout->text ("at "); | |
0d381245 | 5877 | } |
112e8700 | 5878 | uiout->field_string ("file", |
05cba821 | 5879 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5880 | uiout->text (":"); |
05cba821 | 5881 | |
112e8700 SM |
5882 | if (uiout->is_mi_like_p ()) |
5883 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5884 | |
112e8700 | 5885 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5886 | } |
859825b8 | 5887 | else if (loc) |
0d381245 | 5888 | { |
d7e74731 | 5889 | string_file stb; |
170b53b2 | 5890 | |
d7e74731 | 5891 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5892 | demangle, ""); |
112e8700 | 5893 | uiout->field_stream ("at", stb); |
0d381245 | 5894 | } |
859825b8 | 5895 | else |
f00aae0f | 5896 | { |
d28cd78a TT |
5897 | uiout->field_string ("pending", |
5898 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5899 | /* If extra_string is available, it could be holding a condition |
5900 | or dprintf arguments. In either case, make sure it is printed, | |
5901 | too, but only for non-MI streams. */ | |
112e8700 | 5902 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5903 | { |
5904 | if (b->type == bp_dprintf) | |
112e8700 | 5905 | uiout->text (","); |
f00aae0f | 5906 | else |
112e8700 SM |
5907 | uiout->text (" "); |
5908 | uiout->text (b->extra_string); | |
f00aae0f KS |
5909 | } |
5910 | } | |
6c95b8df | 5911 | |
b775012e LM |
5912 | if (loc && is_breakpoint (b) |
5913 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5914 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5915 | { | |
112e8700 SM |
5916 | uiout->text (" ("); |
5917 | uiout->field_string ("evaluated-by", | |
b775012e | 5918 | bp_location_condition_evaluator (loc)); |
112e8700 | 5919 | uiout->text (")"); |
b775012e | 5920 | } |
0d381245 VP |
5921 | } |
5922 | ||
269b11a2 PA |
5923 | static const char * |
5924 | bptype_string (enum bptype type) | |
c906108c | 5925 | { |
c4093a6a JM |
5926 | struct ep_type_description |
5927 | { | |
5928 | enum bptype type; | |
a121b7c1 | 5929 | const char *description; |
c4093a6a JM |
5930 | }; |
5931 | static struct ep_type_description bptypes[] = | |
c906108c | 5932 | { |
c5aa993b JM |
5933 | {bp_none, "?deleted?"}, |
5934 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5935 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5936 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5937 | {bp_until, "until"}, |
5938 | {bp_finish, "finish"}, | |
5939 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5940 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5941 | {bp_read_watchpoint, "read watchpoint"}, |
5942 | {bp_access_watchpoint, "acc watchpoint"}, | |
5943 | {bp_longjmp, "longjmp"}, | |
5944 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5945 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5946 | {bp_exception, "exception"}, |
5947 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5948 | {bp_step_resume, "step resume"}, |
2c03e5be | 5949 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5950 | {bp_watchpoint_scope, "watchpoint scope"}, |
5951 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5952 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5953 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5954 | {bp_thread_event, "thread events"}, |
1900040c | 5955 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5956 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5957 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5958 | {bp_exception_master, "exception master"}, |
ce78b96d | 5959 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5960 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5961 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5962 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5963 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5964 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5965 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5966 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5967 | }; |
269b11a2 PA |
5968 | |
5969 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5970 | || ((int) type != bptypes[(int) type].type)) | |
5971 | internal_error (__FILE__, __LINE__, | |
5972 | _("bptypes table does not describe type #%d."), | |
5973 | (int) type); | |
5974 | ||
5975 | return bptypes[(int) type].description; | |
5976 | } | |
5977 | ||
998580f1 MK |
5978 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5979 | For CLI, prefix the list with the string 'inf'. */ | |
5980 | ||
5981 | static void | |
5982 | output_thread_groups (struct ui_out *uiout, | |
5983 | const char *field_name, | |
5c632425 | 5984 | const std::vector<int> &inf_nums, |
998580f1 MK |
5985 | int mi_only) |
5986 | { | |
112e8700 | 5987 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5988 | |
5989 | /* For backward compatibility, don't display inferiors in CLI unless | |
5990 | there are several. Always display them for MI. */ | |
5991 | if (!is_mi && mi_only) | |
5992 | return; | |
5993 | ||
10f489e5 | 5994 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5995 | |
5c632425 | 5996 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5997 | { |
5998 | if (is_mi) | |
5999 | { | |
6000 | char mi_group[10]; | |
6001 | ||
5c632425 | 6002 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6003 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6004 | } |
6005 | else | |
6006 | { | |
6007 | if (i == 0) | |
112e8700 | 6008 | uiout->text (" inf "); |
998580f1 | 6009 | else |
112e8700 | 6010 | uiout->text (", "); |
998580f1 | 6011 | |
5c632425 | 6012 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6013 | } |
6014 | } | |
998580f1 MK |
6015 | } |
6016 | ||
269b11a2 PA |
6017 | /* Print B to gdb_stdout. */ |
6018 | ||
6019 | static void | |
6020 | print_one_breakpoint_location (struct breakpoint *b, | |
6021 | struct bp_location *loc, | |
6022 | int loc_number, | |
6023 | struct bp_location **last_loc, | |
269b11a2 PA |
6024 | int allflag) |
6025 | { | |
6026 | struct command_line *l; | |
c2c6d25f | 6027 | static char bpenables[] = "nynny"; |
c906108c | 6028 | |
79a45e25 | 6029 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6030 | int header_of_multiple = 0; |
6031 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6032 | struct value_print_options opts; |
6033 | ||
6034 | get_user_print_options (&opts); | |
0d381245 VP |
6035 | |
6036 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6037 | /* See comment in print_one_breakpoint concerning treatment of |
6038 | breakpoints with single disabled location. */ | |
0d381245 VP |
6039 | if (loc == NULL |
6040 | && (b->loc != NULL | |
6041 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6042 | header_of_multiple = 1; | |
6043 | if (loc == NULL) | |
6044 | loc = b->loc; | |
6045 | ||
c4093a6a JM |
6046 | annotate_record (); |
6047 | ||
6048 | /* 1 */ | |
6049 | annotate_field (0); | |
0d381245 VP |
6050 | if (part_of_multiple) |
6051 | { | |
6052 | char *formatted; | |
0c6773c1 | 6053 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6054 | uiout->field_string ("number", formatted); |
0d381245 VP |
6055 | xfree (formatted); |
6056 | } | |
6057 | else | |
6058 | { | |
112e8700 | 6059 | uiout->field_int ("number", b->number); |
0d381245 | 6060 | } |
c4093a6a JM |
6061 | |
6062 | /* 2 */ | |
6063 | annotate_field (1); | |
0d381245 | 6064 | if (part_of_multiple) |
112e8700 | 6065 | uiout->field_skip ("type"); |
269b11a2 | 6066 | else |
112e8700 | 6067 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6068 | |
6069 | /* 3 */ | |
6070 | annotate_field (2); | |
0d381245 | 6071 | if (part_of_multiple) |
112e8700 | 6072 | uiout->field_skip ("disp"); |
0d381245 | 6073 | else |
112e8700 | 6074 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6075 | |
c4093a6a JM |
6076 | |
6077 | /* 4 */ | |
6078 | annotate_field (3); | |
0d381245 | 6079 | if (part_of_multiple) |
112e8700 | 6080 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6081 | else |
112e8700 SM |
6082 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6083 | uiout->spaces (2); | |
0d381245 | 6084 | |
c4093a6a JM |
6085 | |
6086 | /* 5 and 6 */ | |
3086aeae | 6087 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6088 | { |
4a64f543 MS |
6089 | /* Although the print_one can possibly print all locations, |
6090 | calling it here is not likely to get any nice result. So, | |
6091 | make sure there's just one location. */ | |
0d381245 | 6092 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6093 | b->ops->print_one (b, last_loc); |
0d381245 | 6094 | } |
3086aeae DJ |
6095 | else |
6096 | switch (b->type) | |
6097 | { | |
6098 | case bp_none: | |
6099 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6100 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6101 | break; |
c906108c | 6102 | |
3086aeae DJ |
6103 | case bp_watchpoint: |
6104 | case bp_hardware_watchpoint: | |
6105 | case bp_read_watchpoint: | |
6106 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6107 | { |
6108 | struct watchpoint *w = (struct watchpoint *) b; | |
6109 | ||
6110 | /* Field 4, the address, is omitted (which makes the columns | |
6111 | not line up too nicely with the headers, but the effect | |
6112 | is relatively readable). */ | |
6113 | if (opts.addressprint) | |
112e8700 | 6114 | uiout->field_skip ("addr"); |
3a5c3e22 | 6115 | annotate_field (5); |
112e8700 | 6116 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6117 | } |
3086aeae DJ |
6118 | break; |
6119 | ||
3086aeae DJ |
6120 | case bp_breakpoint: |
6121 | case bp_hardware_breakpoint: | |
7c16b83e | 6122 | case bp_single_step: |
3086aeae DJ |
6123 | case bp_until: |
6124 | case bp_finish: | |
6125 | case bp_longjmp: | |
6126 | case bp_longjmp_resume: | |
e2e4d78b | 6127 | case bp_longjmp_call_dummy: |
186c406b TT |
6128 | case bp_exception: |
6129 | case bp_exception_resume: | |
3086aeae | 6130 | case bp_step_resume: |
2c03e5be | 6131 | case bp_hp_step_resume: |
3086aeae DJ |
6132 | case bp_watchpoint_scope: |
6133 | case bp_call_dummy: | |
aa7d318d | 6134 | case bp_std_terminate: |
3086aeae DJ |
6135 | case bp_shlib_event: |
6136 | case bp_thread_event: | |
6137 | case bp_overlay_event: | |
0fd8e87f | 6138 | case bp_longjmp_master: |
aa7d318d | 6139 | case bp_std_terminate_master: |
186c406b | 6140 | case bp_exception_master: |
1042e4c0 | 6141 | case bp_tracepoint: |
7a697b8d | 6142 | case bp_fast_tracepoint: |
0fb4aa4b | 6143 | case bp_static_tracepoint: |
e7e0cddf | 6144 | case bp_dprintf: |
4efc6507 | 6145 | case bp_jit_event: |
0e30163f JK |
6146 | case bp_gnu_ifunc_resolver: |
6147 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6148 | if (opts.addressprint) |
3086aeae DJ |
6149 | { |
6150 | annotate_field (4); | |
54e52265 | 6151 | if (header_of_multiple) |
112e8700 | 6152 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6153 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6154 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6155 | else |
112e8700 | 6156 | uiout->field_core_addr ("addr", |
5af949e3 | 6157 | loc->gdbarch, loc->address); |
3086aeae DJ |
6158 | } |
6159 | annotate_field (5); | |
0d381245 | 6160 | if (!header_of_multiple) |
170b53b2 | 6161 | print_breakpoint_location (b, loc); |
0d381245 | 6162 | if (b->loc) |
a6d9a66e | 6163 | *last_loc = b->loc; |
3086aeae DJ |
6164 | break; |
6165 | } | |
c906108c | 6166 | |
6c95b8df | 6167 | |
998580f1 | 6168 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6169 | { |
6170 | struct inferior *inf; | |
5c632425 | 6171 | std::vector<int> inf_nums; |
998580f1 | 6172 | int mi_only = 1; |
6c95b8df | 6173 | |
998580f1 | 6174 | ALL_INFERIORS (inf) |
6c95b8df PA |
6175 | { |
6176 | if (inf->pspace == loc->pspace) | |
5c632425 | 6177 | inf_nums.push_back (inf->num); |
6c95b8df | 6178 | } |
998580f1 MK |
6179 | |
6180 | /* For backward compatibility, don't display inferiors in CLI unless | |
6181 | there are several. Always display for MI. */ | |
6182 | if (allflag | |
6183 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6184 | && (number_of_program_spaces () > 1 | |
6185 | || number_of_inferiors () > 1) | |
6186 | /* LOC is for existing B, it cannot be in | |
6187 | moribund_locations and thus having NULL OWNER. */ | |
6188 | && loc->owner->type != bp_catchpoint)) | |
6189 | mi_only = 0; | |
5c632425 | 6190 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6191 | } |
6192 | ||
4a306c9a | 6193 | if (!part_of_multiple) |
c4093a6a | 6194 | { |
4a306c9a JB |
6195 | if (b->thread != -1) |
6196 | { | |
6197 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6198 | "stop only in" line a little further down. */ |
112e8700 SM |
6199 | uiout->text (" thread "); |
6200 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6201 | } |
6202 | else if (b->task != 0) | |
6203 | { | |
112e8700 SM |
6204 | uiout->text (" task "); |
6205 | uiout->field_int ("task", b->task); | |
4a306c9a | 6206 | } |
c4093a6a | 6207 | } |
f1310107 | 6208 | |
112e8700 | 6209 | uiout->text ("\n"); |
f1310107 | 6210 | |
348d480f | 6211 | if (!part_of_multiple) |
f1310107 TJB |
6212 | b->ops->print_one_detail (b, uiout); |
6213 | ||
0d381245 | 6214 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6215 | { |
6216 | annotate_field (6); | |
112e8700 | 6217 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6218 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6219 | the frame ID. */ |
112e8700 | 6220 | uiout->field_core_addr ("frame", |
5af949e3 | 6221 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6222 | uiout->text ("\n"); |
c4093a6a JM |
6223 | } |
6224 | ||
28010a5d | 6225 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6226 | { |
6227 | annotate_field (7); | |
d77f58be | 6228 | if (is_tracepoint (b)) |
112e8700 | 6229 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6230 | else |
112e8700 SM |
6231 | uiout->text ("\tstop only if "); |
6232 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6233 | |
6234 | /* Print whether the target is doing the breakpoint's condition | |
6235 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6236 | if (is_breakpoint (b) | |
6237 | && breakpoint_condition_evaluation_mode () | |
6238 | == condition_evaluation_target) | |
6239 | { | |
112e8700 SM |
6240 | uiout->text (" ("); |
6241 | uiout->field_string ("evaluated-by", | |
b775012e | 6242 | bp_condition_evaluator (b)); |
112e8700 | 6243 | uiout->text (" evals)"); |
b775012e | 6244 | } |
112e8700 | 6245 | uiout->text ("\n"); |
0101ce28 JJ |
6246 | } |
6247 | ||
0d381245 | 6248 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6249 | { |
4a64f543 | 6250 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6251 | uiout->text ("\tstop only in thread "); |
6252 | if (uiout->is_mi_like_p ()) | |
6253 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6254 | else |
6255 | { | |
6256 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6257 | ||
112e8700 | 6258 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6259 | } |
112e8700 | 6260 | uiout->text ("\n"); |
c4093a6a JM |
6261 | } |
6262 | ||
556ec64d YQ |
6263 | if (!part_of_multiple) |
6264 | { | |
6265 | if (b->hit_count) | |
31f56a27 YQ |
6266 | { |
6267 | /* FIXME should make an annotation for this. */ | |
6268 | if (is_catchpoint (b)) | |
112e8700 | 6269 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6270 | else if (is_tracepoint (b)) |
112e8700 | 6271 | uiout->text ("\ttracepoint"); |
31f56a27 | 6272 | else |
112e8700 SM |
6273 | uiout->text ("\tbreakpoint"); |
6274 | uiout->text (" already hit "); | |
6275 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6276 | if (b->hit_count == 1) |
112e8700 | 6277 | uiout->text (" time\n"); |
31f56a27 | 6278 | else |
112e8700 | 6279 | uiout->text (" times\n"); |
31f56a27 | 6280 | } |
556ec64d YQ |
6281 | else |
6282 | { | |
31f56a27 | 6283 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6284 | if (uiout->is_mi_like_p ()) |
6285 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6286 | } |
6287 | } | |
8b93c638 | 6288 | |
0d381245 | 6289 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6290 | { |
6291 | annotate_field (8); | |
112e8700 SM |
6292 | uiout->text ("\tignore next "); |
6293 | uiout->field_int ("ignore", b->ignore_count); | |
6294 | uiout->text (" hits\n"); | |
c4093a6a | 6295 | } |
059fb39f | 6296 | |
816338b5 SS |
6297 | /* Note that an enable count of 1 corresponds to "enable once" |
6298 | behavior, which is reported by the combination of enablement and | |
6299 | disposition, so we don't need to mention it here. */ | |
6300 | if (!part_of_multiple && b->enable_count > 1) | |
6301 | { | |
6302 | annotate_field (8); | |
112e8700 | 6303 | uiout->text ("\tdisable after "); |
816338b5 SS |
6304 | /* Tweak the wording to clarify that ignore and enable counts |
6305 | are distinct, and have additive effect. */ | |
6306 | if (b->ignore_count) | |
112e8700 | 6307 | uiout->text ("additional "); |
816338b5 | 6308 | else |
112e8700 SM |
6309 | uiout->text ("next "); |
6310 | uiout->field_int ("enable", b->enable_count); | |
6311 | uiout->text (" hits\n"); | |
816338b5 SS |
6312 | } |
6313 | ||
f196051f SS |
6314 | if (!part_of_multiple && is_tracepoint (b)) |
6315 | { | |
6316 | struct tracepoint *tp = (struct tracepoint *) b; | |
6317 | ||
6318 | if (tp->traceframe_usage) | |
6319 | { | |
112e8700 SM |
6320 | uiout->text ("\ttrace buffer usage "); |
6321 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6322 | uiout->text (" bytes\n"); | |
f196051f SS |
6323 | } |
6324 | } | |
d3ce09f5 | 6325 | |
d1b0a7bf | 6326 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6327 | if (!part_of_multiple && l) |
c4093a6a JM |
6328 | { |
6329 | annotate_field (9); | |
2e783024 | 6330 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6331 | print_command_lines (uiout, l, 4); |
c4093a6a | 6332 | } |
d24317b4 | 6333 | |
d9b3f62e | 6334 | if (is_tracepoint (b)) |
1042e4c0 | 6335 | { |
d9b3f62e PA |
6336 | struct tracepoint *t = (struct tracepoint *) b; |
6337 | ||
6338 | if (!part_of_multiple && t->pass_count) | |
6339 | { | |
6340 | annotate_field (10); | |
112e8700 SM |
6341 | uiout->text ("\tpass count "); |
6342 | uiout->field_int ("pass", t->pass_count); | |
6343 | uiout->text (" \n"); | |
d9b3f62e | 6344 | } |
f2a8bc8a YQ |
6345 | |
6346 | /* Don't display it when tracepoint or tracepoint location is | |
6347 | pending. */ | |
6348 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6349 | { | |
6350 | annotate_field (11); | |
6351 | ||
112e8700 SM |
6352 | if (uiout->is_mi_like_p ()) |
6353 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6354 | loc->inserted ? "y" : "n"); |
6355 | else | |
6356 | { | |
6357 | if (loc->inserted) | |
112e8700 | 6358 | uiout->text ("\t"); |
f2a8bc8a | 6359 | else |
112e8700 SM |
6360 | uiout->text ("\tnot "); |
6361 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6362 | } |
6363 | } | |
1042e4c0 SS |
6364 | } |
6365 | ||
112e8700 | 6366 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6367 | { |
3a5c3e22 PA |
6368 | if (is_watchpoint (b)) |
6369 | { | |
6370 | struct watchpoint *w = (struct watchpoint *) b; | |
6371 | ||
112e8700 | 6372 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6373 | } |
f00aae0f | 6374 | else if (b->location != NULL |
d28cd78a | 6375 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6376 | uiout->field_string ("original-location", |
d28cd78a | 6377 | event_location_to_string (b->location.get ())); |
d24317b4 | 6378 | } |
c4093a6a | 6379 | } |
c5aa993b | 6380 | |
0d381245 VP |
6381 | static void |
6382 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6383 | struct bp_location **last_loc, |
6c95b8df | 6384 | int allflag) |
0d381245 | 6385 | { |
79a45e25 | 6386 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6387 | |
2e783024 TT |
6388 | { |
6389 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6390 | |
2e783024 TT |
6391 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6392 | } | |
0d381245 VP |
6393 | |
6394 | /* If this breakpoint has custom print function, | |
6395 | it's already printed. Otherwise, print individual | |
6396 | locations, if any. */ | |
6397 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6398 | { | |
4a64f543 MS |
6399 | /* If breakpoint has a single location that is disabled, we |
6400 | print it as if it had several locations, since otherwise it's | |
6401 | hard to represent "breakpoint enabled, location disabled" | |
6402 | situation. | |
6403 | ||
6404 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6405 | internally, that's not a property exposed to user. */ |
0d381245 | 6406 | if (b->loc |
a5606eee | 6407 | && !is_hardware_watchpoint (b) |
8d3788bd | 6408 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6409 | { |
6410 | struct bp_location *loc; | |
6411 | int n = 1; | |
8d3788bd | 6412 | |
0d381245 | 6413 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6414 | { |
2e783024 | 6415 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6416 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6417 | } |
0d381245 VP |
6418 | } |
6419 | } | |
6420 | } | |
6421 | ||
a6d9a66e UW |
6422 | static int |
6423 | breakpoint_address_bits (struct breakpoint *b) | |
6424 | { | |
6425 | int print_address_bits = 0; | |
6426 | struct bp_location *loc; | |
6427 | ||
c6d81124 PA |
6428 | /* Software watchpoints that aren't watching memory don't have an |
6429 | address to print. */ | |
6430 | if (is_no_memory_software_watchpoint (b)) | |
6431 | return 0; | |
6432 | ||
a6d9a66e UW |
6433 | for (loc = b->loc; loc; loc = loc->next) |
6434 | { | |
c7437ca6 PA |
6435 | int addr_bit; |
6436 | ||
c7437ca6 | 6437 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6438 | if (addr_bit > print_address_bits) |
6439 | print_address_bits = addr_bit; | |
6440 | } | |
6441 | ||
6442 | return print_address_bits; | |
6443 | } | |
0d381245 | 6444 | |
65630365 | 6445 | /* See breakpoint.h. */ |
c5aa993b | 6446 | |
65630365 PA |
6447 | void |
6448 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6449 | { |
a6d9a66e | 6450 | struct bp_location *dummy_loc = NULL; |
65630365 | 6451 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6452 | } |
c5aa993b | 6453 | |
09d682a4 TT |
6454 | /* Return true if this breakpoint was set by the user, false if it is |
6455 | internal or momentary. */ | |
6456 | ||
6457 | int | |
6458 | user_breakpoint_p (struct breakpoint *b) | |
6459 | { | |
46c6471b | 6460 | return b->number > 0; |
09d682a4 TT |
6461 | } |
6462 | ||
93daf339 TT |
6463 | /* See breakpoint.h. */ |
6464 | ||
6465 | int | |
6466 | pending_breakpoint_p (struct breakpoint *b) | |
6467 | { | |
6468 | return b->loc == NULL; | |
6469 | } | |
6470 | ||
7f3b0473 | 6471 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6472 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6473 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6474 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6475 | ones for which it returns non-zero. Return the total number of | |
6476 | breakpoints listed. */ | |
c906108c | 6477 | |
d77f58be | 6478 | static int |
4495129a | 6479 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6480 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6481 | { |
52f0bd74 | 6482 | struct breakpoint *b; |
a6d9a66e | 6483 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6484 | int nr_printable_breakpoints; |
79a45b7d | 6485 | struct value_print_options opts; |
a6d9a66e | 6486 | int print_address_bits = 0; |
269b11a2 | 6487 | int print_type_col_width = 14; |
79a45e25 | 6488 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6489 | |
79a45b7d TT |
6490 | get_user_print_options (&opts); |
6491 | ||
4a64f543 MS |
6492 | /* Compute the number of rows in the table, as well as the size |
6493 | required for address fields. */ | |
7f3b0473 AC |
6494 | nr_printable_breakpoints = 0; |
6495 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6496 | { |
6497 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6498 | if (filter && !filter (b)) | |
6499 | continue; | |
6500 | ||
6501 | /* If we have an "args" string, it is a list of breakpoints to | |
6502 | accept. Skip the others. */ | |
6503 | if (args != NULL && *args != '\0') | |
6504 | { | |
6505 | if (allflag && parse_and_eval_long (args) != b->number) | |
6506 | continue; | |
6507 | if (!allflag && !number_is_in_list (args, b->number)) | |
6508 | continue; | |
6509 | } | |
269b11a2 | 6510 | |
e5a67952 MS |
6511 | if (allflag || user_breakpoint_p (b)) |
6512 | { | |
6513 | int addr_bit, type_len; | |
a6d9a66e | 6514 | |
e5a67952 MS |
6515 | addr_bit = breakpoint_address_bits (b); |
6516 | if (addr_bit > print_address_bits) | |
6517 | print_address_bits = addr_bit; | |
269b11a2 | 6518 | |
e5a67952 MS |
6519 | type_len = strlen (bptype_string (b->type)); |
6520 | if (type_len > print_type_col_width) | |
6521 | print_type_col_width = type_len; | |
6522 | ||
6523 | nr_printable_breakpoints++; | |
6524 | } | |
6525 | } | |
7f3b0473 | 6526 | |
4a2b031d TT |
6527 | { |
6528 | ui_out_emit_table table_emitter (uiout, | |
6529 | opts.addressprint ? 6 : 5, | |
6530 | nr_printable_breakpoints, | |
6531 | "BreakpointTable"); | |
6532 | ||
6533 | if (nr_printable_breakpoints > 0) | |
6534 | annotate_breakpoints_headers (); | |
6535 | if (nr_printable_breakpoints > 0) | |
6536 | annotate_field (0); | |
6537 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6538 | if (nr_printable_breakpoints > 0) | |
6539 | annotate_field (1); | |
6540 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6541 | if (nr_printable_breakpoints > 0) | |
6542 | annotate_field (2); | |
6543 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6544 | if (nr_printable_breakpoints > 0) | |
6545 | annotate_field (3); | |
6546 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6547 | if (opts.addressprint) | |
6548 | { | |
6549 | if (nr_printable_breakpoints > 0) | |
6550 | annotate_field (4); | |
6551 | if (print_address_bits <= 32) | |
6552 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6553 | else | |
6554 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6555 | } | |
6556 | if (nr_printable_breakpoints > 0) | |
6557 | annotate_field (5); | |
6558 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6559 | uiout->table_body (); | |
6560 | if (nr_printable_breakpoints > 0) | |
6561 | annotate_breakpoints_table (); | |
6562 | ||
6563 | ALL_BREAKPOINTS (b) | |
6564 | { | |
6565 | QUIT; | |
6566 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6567 | if (filter && !filter (b)) | |
6568 | continue; | |
e5a67952 | 6569 | |
4a2b031d TT |
6570 | /* If we have an "args" string, it is a list of breakpoints to |
6571 | accept. Skip the others. */ | |
e5a67952 | 6572 | |
4a2b031d TT |
6573 | if (args != NULL && *args != '\0') |
6574 | { | |
6575 | if (allflag) /* maintenance info breakpoint */ | |
6576 | { | |
6577 | if (parse_and_eval_long (args) != b->number) | |
6578 | continue; | |
6579 | } | |
6580 | else /* all others */ | |
6581 | { | |
6582 | if (!number_is_in_list (args, b->number)) | |
6583 | continue; | |
6584 | } | |
6585 | } | |
6586 | /* We only print out user settable breakpoints unless the | |
6587 | allflag is set. */ | |
6588 | if (allflag || user_breakpoint_p (b)) | |
6589 | print_one_breakpoint (b, &last_loc, allflag); | |
6590 | } | |
6591 | } | |
698384cd | 6592 | |
7f3b0473 | 6593 | if (nr_printable_breakpoints == 0) |
c906108c | 6594 | { |
4a64f543 MS |
6595 | /* If there's a filter, let the caller decide how to report |
6596 | empty list. */ | |
d77f58be SS |
6597 | if (!filter) |
6598 | { | |
e5a67952 | 6599 | if (args == NULL || *args == '\0') |
112e8700 | 6600 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6601 | else |
112e8700 | 6602 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6603 | args); |
d77f58be | 6604 | } |
c906108c SS |
6605 | } |
6606 | else | |
c4093a6a | 6607 | { |
a6d9a66e UW |
6608 | if (last_loc && !server_command) |
6609 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6610 | } |
c906108c | 6611 | |
4a64f543 | 6612 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6613 | there have been breakpoints? */ |
c906108c | 6614 | annotate_breakpoints_table_end (); |
d77f58be SS |
6615 | |
6616 | return nr_printable_breakpoints; | |
c906108c SS |
6617 | } |
6618 | ||
ad443146 SS |
6619 | /* Display the value of default-collect in a way that is generally |
6620 | compatible with the breakpoint list. */ | |
6621 | ||
6622 | static void | |
6623 | default_collect_info (void) | |
6624 | { | |
79a45e25 PA |
6625 | struct ui_out *uiout = current_uiout; |
6626 | ||
ad443146 SS |
6627 | /* If it has no value (which is frequently the case), say nothing; a |
6628 | message like "No default-collect." gets in user's face when it's | |
6629 | not wanted. */ | |
6630 | if (!*default_collect) | |
6631 | return; | |
6632 | ||
6633 | /* The following phrase lines up nicely with per-tracepoint collect | |
6634 | actions. */ | |
112e8700 SM |
6635 | uiout->text ("default collect "); |
6636 | uiout->field_string ("default-collect", default_collect); | |
6637 | uiout->text (" \n"); | |
ad443146 SS |
6638 | } |
6639 | ||
c906108c | 6640 | static void |
0b39b52e | 6641 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6642 | { |
e5a67952 | 6643 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6644 | |
6645 | default_collect_info (); | |
d77f58be SS |
6646 | } |
6647 | ||
6648 | static void | |
1d12d88f | 6649 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6650 | { |
e5a67952 | 6651 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6652 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6653 | |
6654 | if (num_printed == 0) | |
6655 | { | |
e5a67952 | 6656 | if (args == NULL || *args == '\0') |
112e8700 | 6657 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6658 | else |
112e8700 | 6659 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6660 | } |
c906108c SS |
6661 | } |
6662 | ||
7a292a7a | 6663 | static void |
4495129a | 6664 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6665 | { |
e5a67952 | 6666 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6667 | |
6668 | default_collect_info (); | |
c906108c SS |
6669 | } |
6670 | ||
0d381245 | 6671 | static int |
714835d5 | 6672 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6673 | struct program_space *pspace, |
714835d5 | 6674 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6675 | { |
6676 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6677 | |
0d381245 VP |
6678 | for (; bl; bl = bl->next) |
6679 | { | |
6c95b8df PA |
6680 | if (bl->pspace == pspace |
6681 | && bl->address == pc | |
0d381245 VP |
6682 | && (!overlay_debugging || bl->section == section)) |
6683 | return 1; | |
6684 | } | |
6685 | return 0; | |
6686 | } | |
6687 | ||
672f9b60 | 6688 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6689 | concerns with logical breakpoints, so we match program spaces, not |
6690 | address spaces. */ | |
c906108c SS |
6691 | |
6692 | static void | |
6c95b8df PA |
6693 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6694 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6695 | struct obj_section *section, int thread) |
c906108c | 6696 | { |
52f0bd74 AC |
6697 | int others = 0; |
6698 | struct breakpoint *b; | |
c906108c SS |
6699 | |
6700 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6701 | others += (user_breakpoint_p (b) |
6702 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6703 | if (others > 0) |
6704 | { | |
a3f17187 AC |
6705 | if (others == 1) |
6706 | printf_filtered (_("Note: breakpoint ")); | |
6707 | else /* if (others == ???) */ | |
6708 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6709 | ALL_BREAKPOINTS (b) |
672f9b60 | 6710 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6711 | { |
6712 | others--; | |
6713 | printf_filtered ("%d", b->number); | |
6714 | if (b->thread == -1 && thread != -1) | |
6715 | printf_filtered (" (all threads)"); | |
6716 | else if (b->thread != -1) | |
6717 | printf_filtered (" (thread %d)", b->thread); | |
6718 | printf_filtered ("%s%s ", | |
059fb39f | 6719 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6720 | || b->enable_state == bp_call_disabled) |
0d381245 | 6721 | ? " (disabled)" |
0d381245 VP |
6722 | : ""), |
6723 | (others > 1) ? "," | |
6724 | : ((others == 1) ? " and" : "")); | |
6725 | } | |
a3f17187 | 6726 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6727 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6728 | printf_filtered (".\n"); |
6729 | } | |
6730 | } | |
6731 | \f | |
c906108c | 6732 | |
e4f237da | 6733 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6734 | BPT locations. For some breakpoint types, the locations' address members |
6735 | are irrelevant and it makes no sense to attempt to compare them to other | |
6736 | addresses (or use them for any other purpose either). | |
e4f237da | 6737 | |
4a64f543 | 6738 | More specifically, each of the following breakpoint types will |
244558af | 6739 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6740 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6741 | breakpoint location at address zero: |
e4f237da KB |
6742 | |
6743 | bp_watchpoint | |
2d134ed3 PA |
6744 | bp_catchpoint |
6745 | ||
6746 | */ | |
e4f237da KB |
6747 | |
6748 | static int | |
6749 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6750 | { | |
6751 | enum bptype type = bpt->type; | |
6752 | ||
2d134ed3 PA |
6753 | return (type != bp_watchpoint && type != bp_catchpoint); |
6754 | } | |
6755 | ||
6756 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6757 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6758 | ||
6759 | static int | |
4a64f543 MS |
6760 | watchpoint_locations_match (struct bp_location *loc1, |
6761 | struct bp_location *loc2) | |
2d134ed3 | 6762 | { |
3a5c3e22 PA |
6763 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6764 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6765 | ||
6766 | /* Both of them must exist. */ | |
6767 | gdb_assert (w1 != NULL); | |
6768 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6769 | |
4a64f543 MS |
6770 | /* If the target can evaluate the condition expression in hardware, |
6771 | then we we need to insert both watchpoints even if they are at | |
6772 | the same place. Otherwise the watchpoint will only trigger when | |
6773 | the condition of whichever watchpoint was inserted evaluates to | |
6774 | true, not giving a chance for GDB to check the condition of the | |
6775 | other watchpoint. */ | |
3a5c3e22 | 6776 | if ((w1->cond_exp |
4a64f543 MS |
6777 | && target_can_accel_watchpoint_condition (loc1->address, |
6778 | loc1->length, | |
0cf6dd15 | 6779 | loc1->watchpoint_type, |
4d01a485 | 6780 | w1->cond_exp.get ())) |
3a5c3e22 | 6781 | || (w2->cond_exp |
4a64f543 MS |
6782 | && target_can_accel_watchpoint_condition (loc2->address, |
6783 | loc2->length, | |
0cf6dd15 | 6784 | loc2->watchpoint_type, |
4d01a485 | 6785 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6786 | return 0; |
6787 | ||
85d721b8 PA |
6788 | /* Note that this checks the owner's type, not the location's. In |
6789 | case the target does not support read watchpoints, but does | |
6790 | support access watchpoints, we'll have bp_read_watchpoint | |
6791 | watchpoints with hw_access locations. Those should be considered | |
6792 | duplicates of hw_read locations. The hw_read locations will | |
6793 | become hw_access locations later. */ | |
2d134ed3 PA |
6794 | return (loc1->owner->type == loc2->owner->type |
6795 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6796 | && loc1->address == loc2->address | |
6797 | && loc1->length == loc2->length); | |
e4f237da KB |
6798 | } |
6799 | ||
31e77af2 | 6800 | /* See breakpoint.h. */ |
6c95b8df | 6801 | |
31e77af2 | 6802 | int |
accd0bcd YQ |
6803 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6804 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6805 | { |
f5656ead | 6806 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6807 | || aspace1 == aspace2) |
6808 | && addr1 == addr2); | |
6809 | } | |
6810 | ||
f1310107 TJB |
6811 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6812 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6813 | matches ASPACE2. On targets that have global breakpoints, the address | |
6814 | space doesn't really matter. */ | |
6815 | ||
6816 | static int | |
accd0bcd YQ |
6817 | breakpoint_address_match_range (const address_space *aspace1, |
6818 | CORE_ADDR addr1, | |
6819 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6820 | CORE_ADDR addr2) |
6821 | { | |
f5656ead | 6822 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6823 | || aspace1 == aspace2) |
6824 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6825 | } | |
6826 | ||
6827 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6828 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6829 | matches the breakpoint's address space. On targets that have global | |
6830 | breakpoints, the address space doesn't really matter. */ | |
6831 | ||
6832 | static int | |
6833 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6834 | const address_space *aspace, |
f1310107 TJB |
6835 | CORE_ADDR addr) |
6836 | { | |
6837 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6838 | aspace, addr) | |
6839 | || (bl->length | |
6840 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6841 | bl->address, bl->length, | |
6842 | aspace, addr))); | |
6843 | } | |
6844 | ||
d35ae833 PA |
6845 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6846 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6847 | match happens only if ASPACE matches the breakpoint's address | |
6848 | space. On targets that have global breakpoints, the address space | |
6849 | doesn't really matter. */ | |
6850 | ||
6851 | static int | |
6852 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6853 | const address_space *aspace, |
d35ae833 PA |
6854 | CORE_ADDR addr, int len) |
6855 | { | |
6856 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6857 | || bl->pspace->aspace == aspace) | |
6858 | { | |
6859 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6860 | ||
6861 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6862 | return 1; | |
6863 | } | |
6864 | return 0; | |
6865 | } | |
6866 | ||
1e4d1764 YQ |
6867 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6868 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6869 | true, otherwise returns false. */ | |
6870 | ||
6871 | static int | |
6872 | tracepoint_locations_match (struct bp_location *loc1, | |
6873 | struct bp_location *loc2) | |
6874 | { | |
6875 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6876 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6877 | locations at the same address of different tracepoints are regarded as | |
6878 | different locations. */ | |
6879 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6880 | else | |
6881 | return 0; | |
6882 | } | |
6883 | ||
2d134ed3 PA |
6884 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6885 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6886 | represent the same location. */ | |
6887 | ||
6888 | static int | |
4a64f543 MS |
6889 | breakpoint_locations_match (struct bp_location *loc1, |
6890 | struct bp_location *loc2) | |
2d134ed3 | 6891 | { |
2bdf28a0 JK |
6892 | int hw_point1, hw_point2; |
6893 | ||
6894 | /* Both of them must not be in moribund_locations. */ | |
6895 | gdb_assert (loc1->owner != NULL); | |
6896 | gdb_assert (loc2->owner != NULL); | |
6897 | ||
6898 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6899 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6900 | |
6901 | if (hw_point1 != hw_point2) | |
6902 | return 0; | |
6903 | else if (hw_point1) | |
6904 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6905 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6906 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6907 | else |
f1310107 TJB |
6908 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6909 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6910 | loc2->pspace->aspace, loc2->address) | |
6911 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6912 | } |
6913 | ||
76897487 KB |
6914 | static void |
6915 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6916 | int bnum, int have_bnum) | |
6917 | { | |
f63fbe86 MS |
6918 | /* The longest string possibly returned by hex_string_custom |
6919 | is 50 chars. These must be at least that big for safety. */ | |
6920 | char astr1[64]; | |
6921 | char astr2[64]; | |
76897487 | 6922 | |
bb599908 PH |
6923 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6924 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6925 | if (have_bnum) |
8a3fe4f8 | 6926 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6927 | bnum, astr1, astr2); |
6928 | else | |
8a3fe4f8 | 6929 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6930 | } |
6931 | ||
4a64f543 MS |
6932 | /* Adjust a breakpoint's address to account for architectural |
6933 | constraints on breakpoint placement. Return the adjusted address. | |
6934 | Note: Very few targets require this kind of adjustment. For most | |
6935 | targets, this function is simply the identity function. */ | |
76897487 KB |
6936 | |
6937 | static CORE_ADDR | |
a6d9a66e UW |
6938 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6939 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6940 | { |
a0de8c21 YQ |
6941 | if (bptype == bp_watchpoint |
6942 | || bptype == bp_hardware_watchpoint | |
6943 | || bptype == bp_read_watchpoint | |
6944 | || bptype == bp_access_watchpoint | |
6945 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6946 | { |
6947 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6948 | have their addresses modified. */ | |
6949 | return bpaddr; | |
6950 | } | |
7c16b83e PA |
6951 | else if (bptype == bp_single_step) |
6952 | { | |
6953 | /* Single-step breakpoints should not have their addresses | |
6954 | modified. If there's any architectural constrain that | |
6955 | applies to this address, then it should have already been | |
6956 | taken into account when the breakpoint was created in the | |
6957 | first place. If we didn't do this, stepping through e.g., | |
6958 | Thumb-2 IT blocks would break. */ | |
6959 | return bpaddr; | |
6960 | } | |
76897487 KB |
6961 | else |
6962 | { | |
a0de8c21 YQ |
6963 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6964 | ||
6965 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6966 | { | |
6967 | /* Some targets have architectural constraints on the placement | |
6968 | of breakpoint instructions. Obtain the adjusted address. */ | |
6969 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6970 | } | |
76897487 | 6971 | |
a0de8c21 | 6972 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6973 | |
6974 | /* An adjusted breakpoint address can significantly alter | |
6975 | a user's expectations. Print a warning if an adjustment | |
6976 | is required. */ | |
6977 | if (adjusted_bpaddr != bpaddr) | |
6978 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6979 | ||
6980 | return adjusted_bpaddr; | |
6981 | } | |
6982 | } | |
6983 | ||
5625a286 | 6984 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 6985 | { |
5625a286 | 6986 | bp_location *loc = this; |
7cc221ef | 6987 | |
348d480f PA |
6988 | gdb_assert (ops != NULL); |
6989 | ||
28010a5d PA |
6990 | loc->ops = ops; |
6991 | loc->owner = owner; | |
b775012e | 6992 | loc->cond_bytecode = NULL; |
0d381245 VP |
6993 | loc->shlib_disabled = 0; |
6994 | loc->enabled = 1; | |
e049a4b5 | 6995 | |
28010a5d | 6996 | switch (owner->type) |
e049a4b5 DJ |
6997 | { |
6998 | case bp_breakpoint: | |
7c16b83e | 6999 | case bp_single_step: |
e049a4b5 DJ |
7000 | case bp_until: |
7001 | case bp_finish: | |
7002 | case bp_longjmp: | |
7003 | case bp_longjmp_resume: | |
e2e4d78b | 7004 | case bp_longjmp_call_dummy: |
186c406b TT |
7005 | case bp_exception: |
7006 | case bp_exception_resume: | |
e049a4b5 | 7007 | case bp_step_resume: |
2c03e5be | 7008 | case bp_hp_step_resume: |
e049a4b5 DJ |
7009 | case bp_watchpoint_scope: |
7010 | case bp_call_dummy: | |
aa7d318d | 7011 | case bp_std_terminate: |
e049a4b5 DJ |
7012 | case bp_shlib_event: |
7013 | case bp_thread_event: | |
7014 | case bp_overlay_event: | |
4efc6507 | 7015 | case bp_jit_event: |
0fd8e87f | 7016 | case bp_longjmp_master: |
aa7d318d | 7017 | case bp_std_terminate_master: |
186c406b | 7018 | case bp_exception_master: |
0e30163f JK |
7019 | case bp_gnu_ifunc_resolver: |
7020 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7021 | case bp_dprintf: |
e049a4b5 | 7022 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7023 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7024 | break; |
7025 | case bp_hardware_breakpoint: | |
7026 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7027 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7028 | break; |
7029 | case bp_hardware_watchpoint: | |
7030 | case bp_read_watchpoint: | |
7031 | case bp_access_watchpoint: | |
7032 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7033 | break; | |
7034 | case bp_watchpoint: | |
ce78b96d | 7035 | case bp_catchpoint: |
15c3d785 PA |
7036 | case bp_tracepoint: |
7037 | case bp_fast_tracepoint: | |
0fb4aa4b | 7038 | case bp_static_tracepoint: |
e049a4b5 DJ |
7039 | loc->loc_type = bp_loc_other; |
7040 | break; | |
7041 | default: | |
e2e0b3e5 | 7042 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7043 | } |
7044 | ||
f431efe5 | 7045 | loc->refc = 1; |
28010a5d PA |
7046 | } |
7047 | ||
7048 | /* Allocate a struct bp_location. */ | |
7049 | ||
7050 | static struct bp_location * | |
7051 | allocate_bp_location (struct breakpoint *bpt) | |
7052 | { | |
348d480f PA |
7053 | return bpt->ops->allocate_location (bpt); |
7054 | } | |
7cc221ef | 7055 | |
f431efe5 PA |
7056 | static void |
7057 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7058 | { |
348d480f | 7059 | loc->ops->dtor (loc); |
4d01a485 | 7060 | delete loc; |
fe3f5fa8 VP |
7061 | } |
7062 | ||
f431efe5 PA |
7063 | /* Increment reference count. */ |
7064 | ||
7065 | static void | |
7066 | incref_bp_location (struct bp_location *bl) | |
7067 | { | |
7068 | ++bl->refc; | |
7069 | } | |
7070 | ||
7071 | /* Decrement reference count. If the reference count reaches 0, | |
7072 | destroy the bp_location. Sets *BLP to NULL. */ | |
7073 | ||
7074 | static void | |
7075 | decref_bp_location (struct bp_location **blp) | |
7076 | { | |
0807b50c PA |
7077 | gdb_assert ((*blp)->refc > 0); |
7078 | ||
f431efe5 PA |
7079 | if (--(*blp)->refc == 0) |
7080 | free_bp_location (*blp); | |
7081 | *blp = NULL; | |
7082 | } | |
7083 | ||
346774a9 | 7084 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7085 | |
b270e6f9 TT |
7086 | static breakpoint * |
7087 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7088 | { |
346774a9 | 7089 | struct breakpoint *b1; |
b270e6f9 | 7090 | struct breakpoint *result = b.get (); |
c906108c | 7091 | |
346774a9 PA |
7092 | /* Add this breakpoint to the end of the chain so that a list of |
7093 | breakpoints will come out in order of increasing numbers. */ | |
7094 | ||
7095 | b1 = breakpoint_chain; | |
7096 | if (b1 == 0) | |
b270e6f9 | 7097 | breakpoint_chain = b.release (); |
346774a9 PA |
7098 | else |
7099 | { | |
7100 | while (b1->next) | |
7101 | b1 = b1->next; | |
b270e6f9 | 7102 | b1->next = b.release (); |
346774a9 | 7103 | } |
b270e6f9 TT |
7104 | |
7105 | return result; | |
346774a9 PA |
7106 | } |
7107 | ||
7108 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7109 | ||
7110 | static void | |
7111 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7112 | struct gdbarch *gdbarch, | |
28010a5d | 7113 | enum bptype bptype, |
c0a91b2b | 7114 | const struct breakpoint_ops *ops) |
346774a9 | 7115 | { |
348d480f PA |
7116 | gdb_assert (ops != NULL); |
7117 | ||
28010a5d | 7118 | b->ops = ops; |
4d28f7a8 | 7119 | b->type = bptype; |
a6d9a66e | 7120 | b->gdbarch = gdbarch; |
c906108c SS |
7121 | b->language = current_language->la_language; |
7122 | b->input_radix = input_radix; | |
d0fb5eae | 7123 | b->related_breakpoint = b; |
346774a9 PA |
7124 | } |
7125 | ||
7126 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7127 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7128 | |
7129 | static struct breakpoint * | |
7130 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7131 | enum bptype bptype, |
c0a91b2b | 7132 | const struct breakpoint_ops *ops) |
346774a9 | 7133 | { |
3b0871f4 | 7134 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7135 | |
3b0871f4 | 7136 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7137 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7138 | } |
7139 | ||
0e30163f JK |
7140 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7141 | resolutions should be made as the user specified the location explicitly | |
7142 | enough. */ | |
7143 | ||
0d381245 | 7144 | static void |
0e30163f | 7145 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7146 | { |
2bdf28a0 JK |
7147 | gdb_assert (loc->owner != NULL); |
7148 | ||
0d381245 | 7149 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7150 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7151 | || is_tracepoint (loc->owner)) |
0d381245 | 7152 | { |
2c02bd72 | 7153 | const char *function_name; |
0e30163f | 7154 | |
3467ec66 | 7155 | if (loc->msymbol != NULL |
f50776aa PA |
7156 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
7157 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc) | |
3467ec66 | 7158 | && !explicit_loc) |
0e30163f JK |
7159 | { |
7160 | struct breakpoint *b = loc->owner; | |
7161 | ||
3467ec66 PA |
7162 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7163 | ||
7164 | if (b->type == bp_breakpoint && b->loc == loc | |
7165 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7166 | { |
7167 | /* Create only the whole new breakpoint of this type but do not | |
7168 | mess more complicated breakpoints with multiple locations. */ | |
7169 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7170 | /* Remember the resolver's address for use by the return |
7171 | breakpoint. */ | |
3467ec66 | 7172 | loc->related_address = loc->address; |
0e30163f JK |
7173 | } |
7174 | } | |
3467ec66 PA |
7175 | else |
7176 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7177 | |
2c02bd72 DE |
7178 | if (function_name) |
7179 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7180 | } |
7181 | } | |
7182 | ||
a6d9a66e | 7183 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7184 | struct gdbarch * |
a6d9a66e UW |
7185 | get_sal_arch (struct symtab_and_line sal) |
7186 | { | |
7187 | if (sal.section) | |
7188 | return get_objfile_arch (sal.section->objfile); | |
7189 | if (sal.symtab) | |
eb822aa6 | 7190 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7191 | |
7192 | return NULL; | |
7193 | } | |
7194 | ||
346774a9 PA |
7195 | /* Low level routine for partially initializing a breakpoint of type |
7196 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7197 | file name, and line number are provided by SAL. |
0d381245 VP |
7198 | |
7199 | It is expected that the caller will complete the initialization of | |
7200 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7201 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7202 | |
346774a9 PA |
7203 | static void |
7204 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7205 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7206 | const struct breakpoint_ops *ops) |
0d381245 | 7207 | { |
28010a5d | 7208 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7209 | |
3742cc8b | 7210 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7211 | |
6c95b8df PA |
7212 | if (bptype != bp_catchpoint) |
7213 | gdb_assert (sal.pspace != NULL); | |
7214 | ||
f8eba3c6 TT |
7215 | /* Store the program space that was used to set the breakpoint, |
7216 | except for ordinary breakpoints, which are independent of the | |
7217 | program space. */ | |
7218 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7219 | b->pspace = sal.pspace; | |
346774a9 | 7220 | } |
c906108c | 7221 | |
346774a9 PA |
7222 | /* set_raw_breakpoint is a low level routine for allocating and |
7223 | partially initializing a breakpoint of type BPTYPE. The newly | |
7224 | created breakpoint's address, section, source file name, and line | |
7225 | number are provided by SAL. The newly created and partially | |
7226 | initialized breakpoint is added to the breakpoint chain and | |
7227 | is also returned as the value of this function. | |
7228 | ||
7229 | It is expected that the caller will complete the initialization of | |
7230 | the newly created breakpoint struct as well as output any status | |
7231 | information regarding the creation of a new breakpoint. In | |
7232 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7233 | number! Care should be taken to not allow an error to occur | |
7234 | prior to completing the initialization of the breakpoint. If this | |
7235 | should happen, a bogus breakpoint will be left on the chain. */ | |
7236 | ||
7237 | struct breakpoint * | |
7238 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7239 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7240 | const struct breakpoint_ops *ops) |
346774a9 | 7241 | { |
3b0871f4 | 7242 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7243 | |
3b0871f4 | 7244 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7245 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7246 | } |
7247 | ||
53a5351d | 7248 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7249 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7250 | initiated the operation. */ | |
c906108c SS |
7251 | |
7252 | void | |
186c406b | 7253 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7254 | { |
35df4500 | 7255 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7256 | int thread = tp->global_num; |
0fd8e87f UW |
7257 | |
7258 | /* To avoid having to rescan all objfile symbols at every step, | |
7259 | we maintain a list of continually-inserted but always disabled | |
7260 | longjmp "master" breakpoints. Here, we simply create momentary | |
7261 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7262 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7263 | if (b->pspace == current_program_space |
186c406b TT |
7264 | && (b->type == bp_longjmp_master |
7265 | || b->type == bp_exception_master)) | |
0fd8e87f | 7266 | { |
06edf0c0 PA |
7267 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7268 | struct breakpoint *clone; | |
cc59ec59 | 7269 | |
e2e4d78b JK |
7270 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7271 | after their removal. */ | |
06edf0c0 | 7272 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7273 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7274 | clone->thread = thread; |
7275 | } | |
186c406b TT |
7276 | |
7277 | tp->initiating_frame = frame; | |
c906108c SS |
7278 | } |
7279 | ||
611c83ae | 7280 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7281 | void |
611c83ae | 7282 | delete_longjmp_breakpoint (int thread) |
c906108c | 7283 | { |
35df4500 | 7284 | struct breakpoint *b, *b_tmp; |
c906108c | 7285 | |
35df4500 | 7286 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7287 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7288 | { |
7289 | if (b->thread == thread) | |
7290 | delete_breakpoint (b); | |
7291 | } | |
c906108c SS |
7292 | } |
7293 | ||
f59f708a PA |
7294 | void |
7295 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7296 | { | |
7297 | struct breakpoint *b, *b_tmp; | |
7298 | ||
7299 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7300 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7301 | { | |
7302 | if (b->thread == thread) | |
7303 | b->disposition = disp_del_at_next_stop; | |
7304 | } | |
7305 | } | |
7306 | ||
e2e4d78b JK |
7307 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7308 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7309 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7310 | breakpoints. */ | |
7311 | ||
7312 | struct breakpoint * | |
7313 | set_longjmp_breakpoint_for_call_dummy (void) | |
7314 | { | |
7315 | struct breakpoint *b, *retval = NULL; | |
7316 | ||
7317 | ALL_BREAKPOINTS (b) | |
7318 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7319 | { | |
7320 | struct breakpoint *new_b; | |
7321 | ||
7322 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7323 | &momentary_breakpoint_ops, |
7324 | 1); | |
00431a78 | 7325 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7326 | |
7327 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7328 | ||
7329 | gdb_assert (new_b->related_breakpoint == new_b); | |
7330 | if (retval == NULL) | |
7331 | retval = new_b; | |
7332 | new_b->related_breakpoint = retval; | |
7333 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7334 | retval = retval->related_breakpoint; | |
7335 | retval->related_breakpoint = new_b; | |
7336 | } | |
7337 | ||
7338 | return retval; | |
7339 | } | |
7340 | ||
7341 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7342 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7343 | stack. |
7344 | ||
7345 | You should call this function only at places where it is safe to currently | |
7346 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7347 | frames. */ | |
7348 | ||
7349 | void | |
b67a2c6f | 7350 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7351 | { |
7352 | struct breakpoint *b, *b_tmp; | |
7353 | ||
7354 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7355 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7356 | { |
7357 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7358 | ||
7359 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7360 | dummy_b = dummy_b->related_breakpoint; | |
7361 | if (dummy_b->type != bp_call_dummy | |
7362 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7363 | continue; | |
7364 | ||
00431a78 | 7365 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7366 | |
7367 | while (b->related_breakpoint != b) | |
7368 | { | |
7369 | if (b_tmp == b->related_breakpoint) | |
7370 | b_tmp = b->related_breakpoint->next; | |
7371 | delete_breakpoint (b->related_breakpoint); | |
7372 | } | |
7373 | delete_breakpoint (b); | |
7374 | } | |
7375 | } | |
7376 | ||
1900040c MS |
7377 | void |
7378 | enable_overlay_breakpoints (void) | |
7379 | { | |
52f0bd74 | 7380 | struct breakpoint *b; |
1900040c MS |
7381 | |
7382 | ALL_BREAKPOINTS (b) | |
7383 | if (b->type == bp_overlay_event) | |
7384 | { | |
7385 | b->enable_state = bp_enabled; | |
44702360 | 7386 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7387 | overlay_events_enabled = 1; |
1900040c MS |
7388 | } |
7389 | } | |
7390 | ||
7391 | void | |
7392 | disable_overlay_breakpoints (void) | |
7393 | { | |
52f0bd74 | 7394 | struct breakpoint *b; |
1900040c MS |
7395 | |
7396 | ALL_BREAKPOINTS (b) | |
7397 | if (b->type == bp_overlay_event) | |
7398 | { | |
7399 | b->enable_state = bp_disabled; | |
44702360 | 7400 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7401 | overlay_events_enabled = 0; |
1900040c MS |
7402 | } |
7403 | } | |
7404 | ||
aa7d318d TT |
7405 | /* Set an active std::terminate breakpoint for each std::terminate |
7406 | master breakpoint. */ | |
7407 | void | |
7408 | set_std_terminate_breakpoint (void) | |
7409 | { | |
35df4500 | 7410 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7411 | |
35df4500 | 7412 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7413 | if (b->pspace == current_program_space |
7414 | && b->type == bp_std_terminate_master) | |
7415 | { | |
06edf0c0 | 7416 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7417 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7418 | } |
7419 | } | |
7420 | ||
7421 | /* Delete all the std::terminate breakpoints. */ | |
7422 | void | |
7423 | delete_std_terminate_breakpoint (void) | |
7424 | { | |
35df4500 | 7425 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7426 | |
35df4500 | 7427 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7428 | if (b->type == bp_std_terminate) |
7429 | delete_breakpoint (b); | |
7430 | } | |
7431 | ||
c4093a6a | 7432 | struct breakpoint * |
a6d9a66e | 7433 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7434 | { |
7435 | struct breakpoint *b; | |
c4093a6a | 7436 | |
06edf0c0 PA |
7437 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7438 | &internal_breakpoint_ops); | |
7439 | ||
b5de0fa7 | 7440 | b->enable_state = bp_enabled; |
f00aae0f | 7441 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7442 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7443 | |
44702360 | 7444 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7445 | |
c4093a6a JM |
7446 | return b; |
7447 | } | |
7448 | ||
0101ce28 JJ |
7449 | struct lang_and_radix |
7450 | { | |
7451 | enum language lang; | |
7452 | int radix; | |
7453 | }; | |
7454 | ||
4efc6507 DE |
7455 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7456 | ||
7457 | struct breakpoint * | |
7458 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7459 | { | |
2a7f3dff PA |
7460 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7461 | &internal_breakpoint_ops); | |
4efc6507 | 7462 | } |
0101ce28 | 7463 | |
03673fc7 PP |
7464 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7465 | ||
7466 | void | |
7467 | remove_jit_event_breakpoints (void) | |
7468 | { | |
7469 | struct breakpoint *b, *b_tmp; | |
7470 | ||
7471 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7472 | if (b->type == bp_jit_event | |
7473 | && b->loc->pspace == current_program_space) | |
7474 | delete_breakpoint (b); | |
7475 | } | |
7476 | ||
cae688ec JJ |
7477 | void |
7478 | remove_solib_event_breakpoints (void) | |
7479 | { | |
35df4500 | 7480 | struct breakpoint *b, *b_tmp; |
cae688ec | 7481 | |
35df4500 | 7482 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7483 | if (b->type == bp_shlib_event |
7484 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7485 | delete_breakpoint (b); |
7486 | } | |
7487 | ||
f37f681c PA |
7488 | /* See breakpoint.h. */ |
7489 | ||
7490 | void | |
7491 | remove_solib_event_breakpoints_at_next_stop (void) | |
7492 | { | |
7493 | struct breakpoint *b, *b_tmp; | |
7494 | ||
7495 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7496 | if (b->type == bp_shlib_event | |
7497 | && b->loc->pspace == current_program_space) | |
7498 | b->disposition = disp_del_at_next_stop; | |
7499 | } | |
7500 | ||
04086b45 PA |
7501 | /* Helper for create_solib_event_breakpoint / |
7502 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7503 | INSERT_MODE to pass through to update_global_location_list. */ | |
7504 | ||
7505 | static struct breakpoint * | |
7506 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7507 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7508 | { |
7509 | struct breakpoint *b; | |
7510 | ||
06edf0c0 PA |
7511 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7512 | &internal_breakpoint_ops); | |
04086b45 | 7513 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7514 | return b; |
7515 | } | |
7516 | ||
04086b45 PA |
7517 | struct breakpoint * |
7518 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7519 | { | |
7520 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7521 | } | |
7522 | ||
f37f681c PA |
7523 | /* See breakpoint.h. */ |
7524 | ||
7525 | struct breakpoint * | |
7526 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7527 | { | |
7528 | struct breakpoint *b; | |
7529 | ||
04086b45 PA |
7530 | /* Explicitly tell update_global_location_list to insert |
7531 | locations. */ | |
7532 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7533 | if (!b->loc->inserted) |
7534 | { | |
7535 | delete_breakpoint (b); | |
7536 | return NULL; | |
7537 | } | |
7538 | return b; | |
7539 | } | |
7540 | ||
cae688ec JJ |
7541 | /* Disable any breakpoints that are on code in shared libraries. Only |
7542 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7543 | ||
7544 | void | |
cb851954 | 7545 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7546 | { |
876fa593 | 7547 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7548 | |
876fa593 | 7549 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7550 | { |
2bdf28a0 | 7551 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7552 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7553 | |
4a64f543 MS |
7554 | /* We apply the check to all breakpoints, including disabled for |
7555 | those with loc->duplicate set. This is so that when breakpoint | |
7556 | becomes enabled, or the duplicate is removed, gdb will try to | |
7557 | insert all breakpoints. If we don't set shlib_disabled here, | |
7558 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7559 | if (((b->type == bp_breakpoint) |
508ccb1f | 7560 | || (b->type == bp_jit_event) |
1042e4c0 | 7561 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7562 | || (is_tracepoint (b))) |
6c95b8df | 7563 | && loc->pspace == current_program_space |
0d381245 | 7564 | && !loc->shlib_disabled |
6c95b8df | 7565 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7566 | ) |
0d381245 VP |
7567 | { |
7568 | loc->shlib_disabled = 1; | |
7569 | } | |
cae688ec JJ |
7570 | } |
7571 | } | |
7572 | ||
63644780 NB |
7573 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7574 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7575 | disabled ones can just stay disabled. */ | |
84acb35a | 7576 | |
75149521 | 7577 | static void |
84acb35a JJ |
7578 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7579 | { | |
876fa593 | 7580 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7581 | int disabled_shlib_breaks = 0; |
7582 | ||
876fa593 | 7583 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7584 | { |
2bdf28a0 | 7585 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7586 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7587 | |
1e4d1764 | 7588 | if (solib->pspace == loc->pspace |
e2dd7057 | 7589 | && !loc->shlib_disabled |
1e4d1764 YQ |
7590 | && (((b->type == bp_breakpoint |
7591 | || b->type == bp_jit_event | |
7592 | || b->type == bp_hardware_breakpoint) | |
7593 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7594 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7595 | || is_tracepoint (b)) | |
e2dd7057 | 7596 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7597 | { |
e2dd7057 PP |
7598 | loc->shlib_disabled = 1; |
7599 | /* At this point, we cannot rely on remove_breakpoint | |
7600 | succeeding so we must mark the breakpoint as not inserted | |
7601 | to prevent future errors occurring in remove_breakpoints. */ | |
7602 | loc->inserted = 0; | |
8d3788bd VP |
7603 | |
7604 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7605 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7606 | |
e2dd7057 PP |
7607 | if (!disabled_shlib_breaks) |
7608 | { | |
223ffa71 | 7609 | target_terminal::ours_for_output (); |
3e43a32a MS |
7610 | warning (_("Temporarily disabling breakpoints " |
7611 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7612 | solib->so_name); |
84acb35a | 7613 | } |
e2dd7057 | 7614 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7615 | } |
7616 | } | |
84acb35a JJ |
7617 | } |
7618 | ||
63644780 NB |
7619 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7620 | notification of free_objfile. Only apply to enabled breakpoints, | |
7621 | disabled ones can just stay disabled. */ | |
7622 | ||
7623 | static void | |
7624 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7625 | { | |
7626 | struct breakpoint *b; | |
7627 | ||
7628 | if (objfile == NULL) | |
7629 | return; | |
7630 | ||
d03de421 PA |
7631 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7632 | managed by the user with add-symbol-file/remove-symbol-file. | |
7633 | Similarly to how breakpoints in shared libraries are handled in | |
7634 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7635 | shlib_disabled so they end up uninserted on the next global |
7636 | location list update. Shared libraries not loaded by the user | |
7637 | aren't handled here -- they're already handled in | |
7638 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7639 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7640 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7641 | main objfile). */ | |
7642 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7643 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7644 | return; |
7645 | ||
7646 | ALL_BREAKPOINTS (b) | |
7647 | { | |
7648 | struct bp_location *loc; | |
7649 | int bp_modified = 0; | |
7650 | ||
7651 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7652 | continue; | |
7653 | ||
7654 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7655 | { | |
7656 | CORE_ADDR loc_addr = loc->address; | |
7657 | ||
7658 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7659 | && loc->loc_type != bp_loc_software_breakpoint) | |
7660 | continue; | |
7661 | ||
7662 | if (loc->shlib_disabled != 0) | |
7663 | continue; | |
7664 | ||
7665 | if (objfile->pspace != loc->pspace) | |
7666 | continue; | |
7667 | ||
7668 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7669 | && loc->loc_type != bp_loc_software_breakpoint) | |
7670 | continue; | |
7671 | ||
7672 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7673 | { | |
7674 | loc->shlib_disabled = 1; | |
08351840 PA |
7675 | /* At this point, we don't know whether the object was |
7676 | unmapped from the inferior or not, so leave the | |
7677 | inserted flag alone. We'll handle failure to | |
7678 | uninsert quietly, in case the object was indeed | |
7679 | unmapped. */ | |
63644780 NB |
7680 | |
7681 | mark_breakpoint_location_modified (loc); | |
7682 | ||
7683 | bp_modified = 1; | |
7684 | } | |
7685 | } | |
7686 | ||
7687 | if (bp_modified) | |
76727919 | 7688 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7689 | } |
7690 | } | |
7691 | ||
ce78b96d JB |
7692 | /* FORK & VFORK catchpoints. */ |
7693 | ||
e29a4733 | 7694 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7695 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7696 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7697 | |
c1fc2657 | 7698 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7699 | { |
e29a4733 PA |
7700 | /* Process id of a child process whose forking triggered this |
7701 | catchpoint. This field is only valid immediately after this | |
7702 | catchpoint has triggered. */ | |
7703 | ptid_t forked_inferior_pid; | |
7704 | }; | |
7705 | ||
4a64f543 MS |
7706 | /* Implement the "insert" breakpoint_ops method for fork |
7707 | catchpoints. */ | |
ce78b96d | 7708 | |
77b06cd7 TJB |
7709 | static int |
7710 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7711 | { |
dfd4cc63 | 7712 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7713 | } |
7714 | ||
4a64f543 MS |
7715 | /* Implement the "remove" breakpoint_ops method for fork |
7716 | catchpoints. */ | |
ce78b96d JB |
7717 | |
7718 | static int | |
73971819 | 7719 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7720 | { |
dfd4cc63 | 7721 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7722 | } |
7723 | ||
7724 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7725 | catchpoints. */ | |
7726 | ||
7727 | static int | |
f1310107 | 7728 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7729 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7730 | const struct target_waitstatus *ws) |
ce78b96d | 7731 | { |
e29a4733 PA |
7732 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7733 | ||
f90263c1 TT |
7734 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7735 | return 0; | |
7736 | ||
7737 | c->forked_inferior_pid = ws->value.related_pid; | |
7738 | return 1; | |
ce78b96d JB |
7739 | } |
7740 | ||
4a64f543 MS |
7741 | /* Implement the "print_it" breakpoint_ops method for fork |
7742 | catchpoints. */ | |
ce78b96d JB |
7743 | |
7744 | static enum print_stop_action | |
348d480f | 7745 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7746 | { |
36dfb11c | 7747 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7748 | struct breakpoint *b = bs->breakpoint_at; |
7749 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7750 | |
ce78b96d | 7751 | annotate_catchpoint (b->number); |
f303dbd6 | 7752 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7753 | if (b->disposition == disp_del) |
112e8700 | 7754 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7755 | else |
112e8700 SM |
7756 | uiout->text ("Catchpoint "); |
7757 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7758 | { |
112e8700 SM |
7759 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7760 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7761 | } |
112e8700 SM |
7762 | uiout->field_int ("bkptno", b->number); |
7763 | uiout->text (" (forked process "); | |
7764 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7765 | uiout->text ("), "); | |
ce78b96d JB |
7766 | return PRINT_SRC_AND_LOC; |
7767 | } | |
7768 | ||
4a64f543 MS |
7769 | /* Implement the "print_one" breakpoint_ops method for fork |
7770 | catchpoints. */ | |
ce78b96d JB |
7771 | |
7772 | static void | |
a6d9a66e | 7773 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7774 | { |
e29a4733 | 7775 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7776 | struct value_print_options opts; |
79a45e25 | 7777 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7778 | |
7779 | get_user_print_options (&opts); | |
7780 | ||
4a64f543 MS |
7781 | /* Field 4, the address, is omitted (which makes the columns not |
7782 | line up too nicely with the headers, but the effect is relatively | |
7783 | readable). */ | |
79a45b7d | 7784 | if (opts.addressprint) |
112e8700 | 7785 | uiout->field_skip ("addr"); |
ce78b96d | 7786 | annotate_field (5); |
112e8700 | 7787 | uiout->text ("fork"); |
e29a4733 | 7788 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7789 | { |
112e8700 SM |
7790 | uiout->text (", process "); |
7791 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7792 | uiout->spaces (1); | |
ce78b96d | 7793 | } |
8ac3646f | 7794 | |
112e8700 SM |
7795 | if (uiout->is_mi_like_p ()) |
7796 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7797 | } |
7798 | ||
7799 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7800 | catchpoints. */ | |
7801 | ||
7802 | static void | |
7803 | print_mention_catch_fork (struct breakpoint *b) | |
7804 | { | |
7805 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7806 | } | |
7807 | ||
6149aea9 PA |
7808 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7809 | catchpoints. */ | |
7810 | ||
7811 | static void | |
7812 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7813 | { | |
7814 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7815 | print_recreate_thread (b, fp); |
6149aea9 PA |
7816 | } |
7817 | ||
ce78b96d JB |
7818 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7819 | ||
2060206e | 7820 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7821 | |
4a64f543 MS |
7822 | /* Implement the "insert" breakpoint_ops method for vfork |
7823 | catchpoints. */ | |
ce78b96d | 7824 | |
77b06cd7 TJB |
7825 | static int |
7826 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7827 | { |
dfd4cc63 | 7828 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7829 | } |
7830 | ||
4a64f543 MS |
7831 | /* Implement the "remove" breakpoint_ops method for vfork |
7832 | catchpoints. */ | |
ce78b96d JB |
7833 | |
7834 | static int | |
73971819 | 7835 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7836 | { |
dfd4cc63 | 7837 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7838 | } |
7839 | ||
7840 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7841 | catchpoints. */ | |
7842 | ||
7843 | static int | |
f1310107 | 7844 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7845 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7846 | const struct target_waitstatus *ws) |
ce78b96d | 7847 | { |
e29a4733 PA |
7848 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7849 | ||
f90263c1 TT |
7850 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7851 | return 0; | |
7852 | ||
7853 | c->forked_inferior_pid = ws->value.related_pid; | |
7854 | return 1; | |
ce78b96d JB |
7855 | } |
7856 | ||
4a64f543 MS |
7857 | /* Implement the "print_it" breakpoint_ops method for vfork |
7858 | catchpoints. */ | |
ce78b96d JB |
7859 | |
7860 | static enum print_stop_action | |
348d480f | 7861 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7862 | { |
36dfb11c | 7863 | struct ui_out *uiout = current_uiout; |
348d480f | 7864 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7865 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7866 | ||
ce78b96d | 7867 | annotate_catchpoint (b->number); |
f303dbd6 | 7868 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7869 | if (b->disposition == disp_del) |
112e8700 | 7870 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7871 | else |
112e8700 SM |
7872 | uiout->text ("Catchpoint "); |
7873 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7874 | { |
112e8700 SM |
7875 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7876 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7877 | } |
112e8700 SM |
7878 | uiout->field_int ("bkptno", b->number); |
7879 | uiout->text (" (vforked process "); | |
7880 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7881 | uiout->text ("), "); | |
ce78b96d JB |
7882 | return PRINT_SRC_AND_LOC; |
7883 | } | |
7884 | ||
4a64f543 MS |
7885 | /* Implement the "print_one" breakpoint_ops method for vfork |
7886 | catchpoints. */ | |
ce78b96d JB |
7887 | |
7888 | static void | |
a6d9a66e | 7889 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7890 | { |
e29a4733 | 7891 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7892 | struct value_print_options opts; |
79a45e25 | 7893 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7894 | |
7895 | get_user_print_options (&opts); | |
4a64f543 MS |
7896 | /* Field 4, the address, is omitted (which makes the columns not |
7897 | line up too nicely with the headers, but the effect is relatively | |
7898 | readable). */ | |
79a45b7d | 7899 | if (opts.addressprint) |
112e8700 | 7900 | uiout->field_skip ("addr"); |
ce78b96d | 7901 | annotate_field (5); |
112e8700 | 7902 | uiout->text ("vfork"); |
e29a4733 | 7903 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7904 | { |
112e8700 SM |
7905 | uiout->text (", process "); |
7906 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7907 | uiout->spaces (1); | |
ce78b96d | 7908 | } |
8ac3646f | 7909 | |
112e8700 SM |
7910 | if (uiout->is_mi_like_p ()) |
7911 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7912 | } |
7913 | ||
7914 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7915 | catchpoints. */ | |
7916 | ||
7917 | static void | |
7918 | print_mention_catch_vfork (struct breakpoint *b) | |
7919 | { | |
7920 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7921 | } | |
7922 | ||
6149aea9 PA |
7923 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7924 | catchpoints. */ | |
7925 | ||
7926 | static void | |
7927 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7928 | { | |
7929 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7930 | print_recreate_thread (b, fp); |
6149aea9 PA |
7931 | } |
7932 | ||
ce78b96d JB |
7933 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7934 | ||
2060206e | 7935 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7936 | |
edcc5120 | 7937 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7938 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7939 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7940 | ||
c1fc2657 | 7941 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7942 | { |
c1fc2657 | 7943 | ~solib_catchpoint () override; |
edcc5120 TT |
7944 | |
7945 | /* True for "catch load", false for "catch unload". */ | |
7946 | unsigned char is_load; | |
7947 | ||
7948 | /* Regular expression to match, if any. COMPILED is only valid when | |
7949 | REGEX is non-NULL. */ | |
7950 | char *regex; | |
2d7cc5c7 | 7951 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7952 | }; |
7953 | ||
c1fc2657 | 7954 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7955 | { |
c1fc2657 | 7956 | xfree (this->regex); |
edcc5120 TT |
7957 | } |
7958 | ||
7959 | static int | |
7960 | insert_catch_solib (struct bp_location *ignore) | |
7961 | { | |
7962 | return 0; | |
7963 | } | |
7964 | ||
7965 | static int | |
73971819 | 7966 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7967 | { |
7968 | return 0; | |
7969 | } | |
7970 | ||
7971 | static int | |
7972 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7973 | const address_space *aspace, |
edcc5120 TT |
7974 | CORE_ADDR bp_addr, |
7975 | const struct target_waitstatus *ws) | |
7976 | { | |
7977 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7978 | struct breakpoint *other; | |
7979 | ||
7980 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7981 | return 1; | |
7982 | ||
7983 | ALL_BREAKPOINTS (other) | |
7984 | { | |
7985 | struct bp_location *other_bl; | |
7986 | ||
7987 | if (other == bl->owner) | |
7988 | continue; | |
7989 | ||
7990 | if (other->type != bp_shlib_event) | |
7991 | continue; | |
7992 | ||
c1fc2657 | 7993 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7994 | continue; |
7995 | ||
7996 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7997 | { | |
7998 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7999 | return 1; | |
8000 | } | |
8001 | } | |
8002 | ||
8003 | return 0; | |
8004 | } | |
8005 | ||
8006 | static void | |
8007 | check_status_catch_solib (struct bpstats *bs) | |
8008 | { | |
8009 | struct solib_catchpoint *self | |
8010 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8011 | |
8012 | if (self->is_load) | |
8013 | { | |
52941706 | 8014 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
8015 | { |
8016 | if (!self->regex | |
2d7cc5c7 | 8017 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8018 | return; |
8019 | } | |
8020 | } | |
8021 | else | |
8022 | { | |
6fb16ce6 | 8023 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8024 | { |
8025 | if (!self->regex | |
6fb16ce6 | 8026 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8027 | return; |
8028 | } | |
8029 | } | |
8030 | ||
8031 | bs->stop = 0; | |
8032 | bs->print_it = print_it_noop; | |
8033 | } | |
8034 | ||
8035 | static enum print_stop_action | |
8036 | print_it_catch_solib (bpstat bs) | |
8037 | { | |
8038 | struct breakpoint *b = bs->breakpoint_at; | |
8039 | struct ui_out *uiout = current_uiout; | |
8040 | ||
8041 | annotate_catchpoint (b->number); | |
f303dbd6 | 8042 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8043 | if (b->disposition == disp_del) |
112e8700 | 8044 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8045 | else |
112e8700 SM |
8046 | uiout->text ("Catchpoint "); |
8047 | uiout->field_int ("bkptno", b->number); | |
8048 | uiout->text ("\n"); | |
8049 | if (uiout->is_mi_like_p ()) | |
8050 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8051 | print_solib_event (1); |
8052 | return PRINT_SRC_AND_LOC; | |
8053 | } | |
8054 | ||
8055 | static void | |
8056 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8057 | { | |
8058 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8059 | struct value_print_options opts; | |
8060 | struct ui_out *uiout = current_uiout; | |
8061 | char *msg; | |
8062 | ||
8063 | get_user_print_options (&opts); | |
8064 | /* Field 4, the address, is omitted (which makes the columns not | |
8065 | line up too nicely with the headers, but the effect is relatively | |
8066 | readable). */ | |
8067 | if (opts.addressprint) | |
8068 | { | |
8069 | annotate_field (4); | |
112e8700 | 8070 | uiout->field_skip ("addr"); |
edcc5120 TT |
8071 | } |
8072 | ||
8073 | annotate_field (5); | |
8074 | if (self->is_load) | |
8075 | { | |
8076 | if (self->regex) | |
8077 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8078 | else | |
8079 | msg = xstrdup (_("load of library")); | |
8080 | } | |
8081 | else | |
8082 | { | |
8083 | if (self->regex) | |
8084 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8085 | else | |
8086 | msg = xstrdup (_("unload of library")); | |
8087 | } | |
112e8700 | 8088 | uiout->field_string ("what", msg); |
edcc5120 | 8089 | xfree (msg); |
8ac3646f | 8090 | |
112e8700 SM |
8091 | if (uiout->is_mi_like_p ()) |
8092 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8093 | } |
8094 | ||
8095 | static void | |
8096 | print_mention_catch_solib (struct breakpoint *b) | |
8097 | { | |
8098 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8099 | ||
8100 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8101 | self->is_load ? "load" : "unload"); | |
8102 | } | |
8103 | ||
8104 | static void | |
8105 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8106 | { | |
8107 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8108 | ||
8109 | fprintf_unfiltered (fp, "%s %s", | |
8110 | b->disposition == disp_del ? "tcatch" : "catch", | |
8111 | self->is_load ? "load" : "unload"); | |
8112 | if (self->regex) | |
8113 | fprintf_unfiltered (fp, " %s", self->regex); | |
8114 | fprintf_unfiltered (fp, "\n"); | |
8115 | } | |
8116 | ||
8117 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8118 | ||
91985142 MG |
8119 | /* Shared helper function (MI and CLI) for creating and installing |
8120 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8121 | the events to be caught are load events, otherwise they are | |
8122 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8123 | temporary one. If ENABLED is non-zero the catchpoint is | |
8124 | created in an enabled state. */ | |
edcc5120 | 8125 | |
91985142 | 8126 | void |
a121b7c1 | 8127 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8128 | { |
edcc5120 | 8129 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8130 | |
edcc5120 TT |
8131 | if (!arg) |
8132 | arg = ""; | |
f1735a53 | 8133 | arg = skip_spaces (arg); |
edcc5120 | 8134 | |
36bd8eaa | 8135 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8136 | |
8137 | if (*arg != '\0') | |
8138 | { | |
2d7cc5c7 PA |
8139 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8140 | _("Invalid regexp"))); | |
edcc5120 TT |
8141 | c->regex = xstrdup (arg); |
8142 | } | |
8143 | ||
8144 | c->is_load = is_load; | |
36bd8eaa | 8145 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8146 | &catch_solib_breakpoint_ops); |
8147 | ||
c1fc2657 | 8148 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8149 | |
b270e6f9 | 8150 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8151 | } |
8152 | ||
91985142 MG |
8153 | /* A helper function that does all the work for "catch load" and |
8154 | "catch unload". */ | |
8155 | ||
8156 | static void | |
eb4c3f4a | 8157 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8158 | struct cmd_list_element *command) |
8159 | { | |
8160 | int tempflag; | |
8161 | const int enabled = 1; | |
8162 | ||
8163 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8164 | ||
8165 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8166 | } | |
8167 | ||
edcc5120 | 8168 | static void |
eb4c3f4a | 8169 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8170 | struct cmd_list_element *command) |
8171 | { | |
8172 | catch_load_or_unload (arg, from_tty, 1, command); | |
8173 | } | |
8174 | ||
8175 | static void | |
eb4c3f4a | 8176 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8177 | struct cmd_list_element *command) |
8178 | { | |
8179 | catch_load_or_unload (arg, from_tty, 0, command); | |
8180 | } | |
8181 | ||
346774a9 PA |
8182 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8183 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8184 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8185 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8186 | |
ab04a2af | 8187 | void |
346774a9 PA |
8188 | init_catchpoint (struct breakpoint *b, |
8189 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8190 | const char *cond_string, |
c0a91b2b | 8191 | const struct breakpoint_ops *ops) |
c906108c | 8192 | { |
51abb421 | 8193 | symtab_and_line sal; |
6c95b8df | 8194 | sal.pspace = current_program_space; |
c5aa993b | 8195 | |
28010a5d | 8196 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8197 | |
1b36a34b | 8198 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8199 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8200 | } |
8201 | ||
28010a5d | 8202 | void |
b270e6f9 | 8203 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8204 | { |
b270e6f9 | 8205 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8206 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8207 | if (is_tracepoint (b)) |
8208 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8209 | if (!internal) |
8210 | mention (b); | |
76727919 | 8211 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8212 | |
8213 | if (update_gll) | |
44702360 | 8214 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8215 | } |
8216 | ||
9b70b993 | 8217 | static void |
a6d9a66e | 8218 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8219 | int tempflag, const char *cond_string, |
c0a91b2b | 8220 | const struct breakpoint_ops *ops) |
c906108c | 8221 | { |
b270e6f9 | 8222 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8223 | |
b270e6f9 | 8224 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8225 | |
8226 | c->forked_inferior_pid = null_ptid; | |
8227 | ||
b270e6f9 | 8228 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8229 | } |
8230 | ||
fe798b75 JB |
8231 | /* Exec catchpoints. */ |
8232 | ||
b4d90040 | 8233 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8234 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8235 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8236 | ||
c1fc2657 | 8237 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8238 | { |
c1fc2657 | 8239 | ~exec_catchpoint () override; |
b4d90040 PA |
8240 | |
8241 | /* Filename of a program whose exec triggered this catchpoint. | |
8242 | This field is only valid immediately after this catchpoint has | |
8243 | triggered. */ | |
8244 | char *exec_pathname; | |
8245 | }; | |
8246 | ||
c1fc2657 | 8247 | /* Exec catchpoint destructor. */ |
b4d90040 | 8248 | |
c1fc2657 | 8249 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8250 | { |
c1fc2657 | 8251 | xfree (this->exec_pathname); |
b4d90040 PA |
8252 | } |
8253 | ||
77b06cd7 TJB |
8254 | static int |
8255 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8256 | { |
dfd4cc63 | 8257 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8258 | } |
c906108c | 8259 | |
fe798b75 | 8260 | static int |
73971819 | 8261 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8262 | { |
dfd4cc63 | 8263 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8264 | } |
c906108c | 8265 | |
fe798b75 | 8266 | static int |
f1310107 | 8267 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8268 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8269 | const struct target_waitstatus *ws) |
fe798b75 | 8270 | { |
b4d90040 PA |
8271 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8272 | ||
f90263c1 TT |
8273 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8274 | return 0; | |
8275 | ||
8276 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8277 | return 1; | |
fe798b75 | 8278 | } |
c906108c | 8279 | |
fe798b75 | 8280 | static enum print_stop_action |
348d480f | 8281 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8282 | { |
36dfb11c | 8283 | struct ui_out *uiout = current_uiout; |
348d480f | 8284 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8285 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8286 | ||
fe798b75 | 8287 | annotate_catchpoint (b->number); |
f303dbd6 | 8288 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8289 | if (b->disposition == disp_del) |
112e8700 | 8290 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8291 | else |
112e8700 SM |
8292 | uiout->text ("Catchpoint "); |
8293 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8294 | { |
112e8700 SM |
8295 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8296 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8297 | } |
112e8700 SM |
8298 | uiout->field_int ("bkptno", b->number); |
8299 | uiout->text (" (exec'd "); | |
8300 | uiout->field_string ("new-exec", c->exec_pathname); | |
8301 | uiout->text ("), "); | |
36dfb11c | 8302 | |
fe798b75 | 8303 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8304 | } |
8305 | ||
fe798b75 | 8306 | static void |
a6d9a66e | 8307 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8308 | { |
b4d90040 | 8309 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8310 | struct value_print_options opts; |
79a45e25 | 8311 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8312 | |
8313 | get_user_print_options (&opts); | |
8314 | ||
8315 | /* Field 4, the address, is omitted (which makes the columns | |
8316 | not line up too nicely with the headers, but the effect | |
8317 | is relatively readable). */ | |
8318 | if (opts.addressprint) | |
112e8700 | 8319 | uiout->field_skip ("addr"); |
fe798b75 | 8320 | annotate_field (5); |
112e8700 | 8321 | uiout->text ("exec"); |
b4d90040 | 8322 | if (c->exec_pathname != NULL) |
fe798b75 | 8323 | { |
112e8700 SM |
8324 | uiout->text (", program \""); |
8325 | uiout->field_string ("what", c->exec_pathname); | |
8326 | uiout->text ("\" "); | |
fe798b75 | 8327 | } |
8ac3646f | 8328 | |
112e8700 SM |
8329 | if (uiout->is_mi_like_p ()) |
8330 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8331 | } |
8332 | ||
8333 | static void | |
8334 | print_mention_catch_exec (struct breakpoint *b) | |
8335 | { | |
8336 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8337 | } | |
8338 | ||
6149aea9 PA |
8339 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8340 | catchpoints. */ | |
8341 | ||
8342 | static void | |
8343 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8344 | { | |
8345 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8346 | print_recreate_thread (b, fp); |
6149aea9 PA |
8347 | } |
8348 | ||
2060206e | 8349 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8350 | |
c906108c | 8351 | static int |
fba45db2 | 8352 | hw_breakpoint_used_count (void) |
c906108c | 8353 | { |
c906108c | 8354 | int i = 0; |
f1310107 TJB |
8355 | struct breakpoint *b; |
8356 | struct bp_location *bl; | |
c906108c SS |
8357 | |
8358 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8359 | { |
d6b74ac4 | 8360 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8361 | for (bl = b->loc; bl; bl = bl->next) |
8362 | { | |
8363 | /* Special types of hardware breakpoints may use more than | |
8364 | one register. */ | |
348d480f | 8365 | i += b->ops->resources_needed (bl); |
f1310107 | 8366 | } |
c5aa993b | 8367 | } |
c906108c SS |
8368 | |
8369 | return i; | |
8370 | } | |
8371 | ||
a1398e0c PA |
8372 | /* Returns the resources B would use if it were a hardware |
8373 | watchpoint. */ | |
8374 | ||
c906108c | 8375 | static int |
a1398e0c | 8376 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8377 | { |
c906108c | 8378 | int i = 0; |
e09342b5 | 8379 | struct bp_location *bl; |
c906108c | 8380 | |
a1398e0c PA |
8381 | if (!breakpoint_enabled (b)) |
8382 | return 0; | |
8383 | ||
8384 | for (bl = b->loc; bl; bl = bl->next) | |
8385 | { | |
8386 | /* Special types of hardware watchpoints may use more than | |
8387 | one register. */ | |
8388 | i += b->ops->resources_needed (bl); | |
8389 | } | |
8390 | ||
8391 | return i; | |
8392 | } | |
8393 | ||
8394 | /* Returns the sum the used resources of all hardware watchpoints of | |
8395 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8396 | the sum of the used resources of all hardware watchpoints of other | |
8397 | types _not_ TYPE. */ | |
8398 | ||
8399 | static int | |
8400 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8401 | enum bptype type, int *other_type_used) | |
8402 | { | |
8403 | int i = 0; | |
8404 | struct breakpoint *b; | |
8405 | ||
c906108c SS |
8406 | *other_type_used = 0; |
8407 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8408 | { |
a1398e0c PA |
8409 | if (b == except) |
8410 | continue; | |
e09342b5 TJB |
8411 | if (!breakpoint_enabled (b)) |
8412 | continue; | |
8413 | ||
a1398e0c PA |
8414 | if (b->type == type) |
8415 | i += hw_watchpoint_use_count (b); | |
8416 | else if (is_hardware_watchpoint (b)) | |
8417 | *other_type_used = 1; | |
e09342b5 TJB |
8418 | } |
8419 | ||
c906108c SS |
8420 | return i; |
8421 | } | |
8422 | ||
c906108c | 8423 | void |
fba45db2 | 8424 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8425 | { |
c5aa993b | 8426 | struct breakpoint *b; |
c906108c SS |
8427 | |
8428 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8429 | { |
cc60f2e3 | 8430 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8431 | { |
b5de0fa7 | 8432 | b->enable_state = bp_call_disabled; |
44702360 | 8433 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8434 | } |
8435 | } | |
c906108c SS |
8436 | } |
8437 | ||
8438 | void | |
fba45db2 | 8439 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8440 | { |
c5aa993b | 8441 | struct breakpoint *b; |
c906108c SS |
8442 | |
8443 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8444 | { |
cc60f2e3 | 8445 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8446 | { |
b5de0fa7 | 8447 | b->enable_state = bp_enabled; |
44702360 | 8448 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8449 | } |
8450 | } | |
c906108c SS |
8451 | } |
8452 | ||
8bea4e01 UW |
8453 | void |
8454 | disable_breakpoints_before_startup (void) | |
8455 | { | |
6c95b8df | 8456 | current_program_space->executing_startup = 1; |
44702360 | 8457 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8458 | } |
8459 | ||
8460 | void | |
8461 | enable_breakpoints_after_startup (void) | |
8462 | { | |
6c95b8df | 8463 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8464 | breakpoint_re_set (); |
8bea4e01 UW |
8465 | } |
8466 | ||
7c16b83e PA |
8467 | /* Create a new single-step breakpoint for thread THREAD, with no |
8468 | locations. */ | |
c906108c | 8469 | |
7c16b83e PA |
8470 | static struct breakpoint * |
8471 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8472 | { | |
b270e6f9 | 8473 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8474 | |
b270e6f9 | 8475 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8476 | &momentary_breakpoint_ops); |
8477 | ||
8478 | b->disposition = disp_donttouch; | |
8479 | b->frame_id = null_frame_id; | |
8480 | ||
8481 | b->thread = thread; | |
8482 | gdb_assert (b->thread != 0); | |
8483 | ||
b270e6f9 | 8484 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8485 | } |
8486 | ||
8487 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8488 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8489 | frame. */ | |
c906108c | 8490 | |
454dafbd | 8491 | breakpoint_up |
a6d9a66e UW |
8492 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8493 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8494 | { |
52f0bd74 | 8495 | struct breakpoint *b; |
edb3359d | 8496 | |
193facb3 JK |
8497 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8498 | tail-called one. */ | |
8499 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8500 | |
06edf0c0 | 8501 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8502 | b->enable_state = bp_enabled; |
8503 | b->disposition = disp_donttouch; | |
818dd999 | 8504 | b->frame_id = frame_id; |
c906108c | 8505 | |
00431a78 | 8506 | b->thread = inferior_thread ()->global_num; |
c906108c | 8507 | |
44702360 | 8508 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8509 | |
454dafbd | 8510 | return breakpoint_up (b); |
c906108c | 8511 | } |
611c83ae | 8512 | |
06edf0c0 | 8513 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8514 | The new breakpoint will have type TYPE, use OPS as its |
8515 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8516 | |
06edf0c0 PA |
8517 | static struct breakpoint * |
8518 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8519 | enum bptype type, | |
a1aa2221 LM |
8520 | const struct breakpoint_ops *ops, |
8521 | int loc_enabled) | |
e58b0e63 PA |
8522 | { |
8523 | struct breakpoint *copy; | |
8524 | ||
06edf0c0 | 8525 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8526 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8527 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8528 | |
a6d9a66e | 8529 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8530 | copy->loc->requested_address = orig->loc->requested_address; |
8531 | copy->loc->address = orig->loc->address; | |
8532 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8533 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8534 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8535 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8536 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8537 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8538 | copy->frame_id = orig->frame_id; |
8539 | copy->thread = orig->thread; | |
6c95b8df | 8540 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8541 | |
8542 | copy->enable_state = bp_enabled; | |
8543 | copy->disposition = disp_donttouch; | |
8544 | copy->number = internal_breakpoint_number--; | |
8545 | ||
44702360 | 8546 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8547 | return copy; |
8548 | } | |
8549 | ||
06edf0c0 PA |
8550 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8551 | ORIG is NULL. */ | |
8552 | ||
8553 | struct breakpoint * | |
8554 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8555 | { | |
8556 | /* If there's nothing to clone, then return nothing. */ | |
8557 | if (orig == NULL) | |
8558 | return NULL; | |
8559 | ||
a1aa2221 | 8560 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8561 | } |
8562 | ||
454dafbd | 8563 | breakpoint_up |
a6d9a66e UW |
8564 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8565 | enum bptype type) | |
611c83ae PA |
8566 | { |
8567 | struct symtab_and_line sal; | |
8568 | ||
8569 | sal = find_pc_line (pc, 0); | |
8570 | sal.pc = pc; | |
8571 | sal.section = find_pc_overlay (pc); | |
8572 | sal.explicit_pc = 1; | |
8573 | ||
a6d9a66e | 8574 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8575 | } |
c906108c | 8576 | \f |
c5aa993b | 8577 | |
c906108c SS |
8578 | /* Tell the user we have just set a breakpoint B. */ |
8579 | ||
8580 | static void | |
fba45db2 | 8581 | mention (struct breakpoint *b) |
c906108c | 8582 | { |
348d480f | 8583 | b->ops->print_mention (b); |
2d33446d | 8584 | current_uiout->text ("\n"); |
c906108c | 8585 | } |
c906108c | 8586 | \f |
c5aa993b | 8587 | |
1a853c52 PA |
8588 | static int bp_loc_is_permanent (struct bp_location *loc); |
8589 | ||
0d381245 | 8590 | static struct bp_location * |
39d61571 | 8591 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8592 | const struct symtab_and_line *sal) |
8593 | { | |
8594 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8595 | CORE_ADDR adjusted_address; |
8596 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8597 | ||
8598 | if (loc_gdbarch == NULL) | |
8599 | loc_gdbarch = b->gdbarch; | |
8600 | ||
8601 | /* Adjust the breakpoint's address prior to allocating a location. | |
8602 | Once we call allocate_bp_location(), that mostly uninitialized | |
8603 | location will be placed on the location chain. Adjustment of the | |
8604 | breakpoint may cause target_read_memory() to be called and we do | |
8605 | not want its scan of the location chain to find a breakpoint and | |
8606 | location that's only been partially initialized. */ | |
8607 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8608 | sal->pc, b->type); | |
0d381245 | 8609 | |
d30113d4 | 8610 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8611 | loc = allocate_bp_location (b); |
d30113d4 JK |
8612 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8613 | tmp = &((*tmp)->next)) | |
0d381245 | 8614 | ; |
d30113d4 | 8615 | loc->next = *tmp; |
0d381245 | 8616 | *tmp = loc; |
3742cc8b | 8617 | |
0d381245 | 8618 | loc->requested_address = sal->pc; |
3742cc8b | 8619 | loc->address = adjusted_address; |
6c95b8df | 8620 | loc->pspace = sal->pspace; |
935676c9 | 8621 | loc->probe.prob = sal->prob; |
729662a5 | 8622 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8623 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8624 | loc->section = sal->section; |
3742cc8b | 8625 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8626 | loc->line_number = sal->line; |
2f202fde | 8627 | loc->symtab = sal->symtab; |
4a27f119 | 8628 | loc->symbol = sal->symbol; |
3467ec66 PA |
8629 | loc->msymbol = sal->msymbol; |
8630 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8631 | |
0e30163f JK |
8632 | set_breakpoint_location_function (loc, |
8633 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8634 | |
6ae88661 LM |
8635 | /* While by definition, permanent breakpoints are already present in the |
8636 | code, we don't mark the location as inserted. Normally one would expect | |
8637 | that GDB could rely on that breakpoint instruction to stop the program, | |
8638 | thus removing the need to insert its own breakpoint, except that executing | |
8639 | the breakpoint instruction can kill the target instead of reporting a | |
8640 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8641 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8642 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8643 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8644 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8645 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8646 | it manually increments the PC, thus avoiding executing the breakpoint | |
8647 | instruction.) */ | |
1a853c52 | 8648 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8649 | loc->permanent = 1; |
1a853c52 | 8650 | |
0d381245 VP |
8651 | return loc; |
8652 | } | |
514f746b AR |
8653 | \f |
8654 | ||
1cf4d951 | 8655 | /* See breakpoint.h. */ |
514f746b | 8656 | |
1cf4d951 PA |
8657 | int |
8658 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8659 | { |
8660 | int len; | |
8661 | CORE_ADDR addr; | |
1afeeb75 | 8662 | const gdb_byte *bpoint; |
514f746b AR |
8663 | gdb_byte *target_mem; |
8664 | ||
1cf4d951 PA |
8665 | addr = address; |
8666 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8667 | ||
8668 | /* Software breakpoints unsupported? */ | |
8669 | if (bpoint == NULL) | |
8670 | return 0; | |
8671 | ||
224c3ddb | 8672 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8673 | |
8674 | /* Enable the automatic memory restoration from breakpoints while | |
8675 | we read the memory. Otherwise we could say about our temporary | |
8676 | breakpoints they are permanent. */ | |
cb85b21b TT |
8677 | scoped_restore restore_memory |
8678 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8679 | |
8680 | if (target_read_memory (address, target_mem, len) == 0 | |
8681 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8682 | return 1; |
1cf4d951 | 8683 | |
cb85b21b | 8684 | return 0; |
1cf4d951 PA |
8685 | } |
8686 | ||
8687 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8688 | return 0 otherwise. */ | |
8689 | ||
8690 | static int | |
8691 | bp_loc_is_permanent (struct bp_location *loc) | |
8692 | { | |
514f746b AR |
8693 | gdb_assert (loc != NULL); |
8694 | ||
244558af LM |
8695 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8696 | attempt to read from the addresses the locations of these breakpoint types | |
8697 | point to. program_breakpoint_here_p, below, will attempt to read | |
8698 | memory. */ | |
8699 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8700 | return 0; | |
8701 | ||
5ed8105e | 8702 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8703 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8704 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8705 | } |
8706 | ||
e7e0cddf SS |
8707 | /* Build a command list for the dprintf corresponding to the current |
8708 | settings of the dprintf style options. */ | |
8709 | ||
8710 | static void | |
8711 | update_dprintf_command_list (struct breakpoint *b) | |
8712 | { | |
8713 | char *dprintf_args = b->extra_string; | |
8714 | char *printf_line = NULL; | |
8715 | ||
8716 | if (!dprintf_args) | |
8717 | return; | |
8718 | ||
8719 | dprintf_args = skip_spaces (dprintf_args); | |
8720 | ||
8721 | /* Allow a comma, as it may have terminated a location, but don't | |
8722 | insist on it. */ | |
8723 | if (*dprintf_args == ',') | |
8724 | ++dprintf_args; | |
8725 | dprintf_args = skip_spaces (dprintf_args); | |
8726 | ||
8727 | if (*dprintf_args != '"') | |
8728 | error (_("Bad format string, missing '\"'.")); | |
8729 | ||
d3ce09f5 | 8730 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8731 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8732 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8733 | { |
8734 | if (!dprintf_function) | |
8735 | error (_("No function supplied for dprintf call")); | |
8736 | ||
8737 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8738 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8739 | dprintf_function, | |
8740 | dprintf_channel, | |
8741 | dprintf_args); | |
8742 | else | |
8743 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8744 | dprintf_function, | |
8745 | dprintf_args); | |
8746 | } | |
d3ce09f5 SS |
8747 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8748 | { | |
8749 | if (target_can_run_breakpoint_commands ()) | |
8750 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8751 | else | |
8752 | { | |
8753 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8754 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8755 | } | |
8756 | } | |
e7e0cddf SS |
8757 | else |
8758 | internal_error (__FILE__, __LINE__, | |
8759 | _("Invalid dprintf style.")); | |
8760 | ||
f28045c2 | 8761 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8762 | |
12973681 TT |
8763 | /* Manufacture a printf sequence. */ |
8764 | struct command_line *printf_cmd_line | |
8765 | = new struct command_line (simple_control, printf_line); | |
8766 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8767 | command_lines_deleter ())); | |
e7e0cddf SS |
8768 | } |
8769 | ||
8770 | /* Update all dprintf commands, making their command lists reflect | |
8771 | current style settings. */ | |
8772 | ||
8773 | static void | |
eb4c3f4a | 8774 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8775 | struct cmd_list_element *c) |
8776 | { | |
8777 | struct breakpoint *b; | |
8778 | ||
8779 | ALL_BREAKPOINTS (b) | |
8780 | { | |
8781 | if (b->type == bp_dprintf) | |
8782 | update_dprintf_command_list (b); | |
8783 | } | |
8784 | } | |
c3f6f71d | 8785 | |
f00aae0f KS |
8786 | /* Create a breakpoint with SAL as location. Use LOCATION |
8787 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8788 | as condition expression. If LOCATION is NULL then create an |
8789 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8790 | |
8791 | static void | |
d9b3f62e | 8792 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8793 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8794 | event_location_up &&location, |
e1e01040 PA |
8795 | gdb::unique_xmalloc_ptr<char> filter, |
8796 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8797 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8798 | enum bptype type, enum bpdisp disposition, |
8799 | int thread, int task, int ignore_count, | |
c0a91b2b | 8800 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8801 | int enabled, int internal, unsigned flags, |
8802 | int display_canonical) | |
018d34a4 | 8803 | { |
0d381245 | 8804 | int i; |
018d34a4 VP |
8805 | |
8806 | if (type == bp_hardware_breakpoint) | |
8807 | { | |
fbbd034e AS |
8808 | int target_resources_ok; |
8809 | ||
8810 | i = hw_breakpoint_used_count (); | |
8811 | target_resources_ok = | |
8812 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8813 | i + 1, 0); |
8814 | if (target_resources_ok == 0) | |
8815 | error (_("No hardware breakpoint support in the target.")); | |
8816 | else if (target_resources_ok < 0) | |
8817 | error (_("Hardware breakpoints used exceeds limit.")); | |
8818 | } | |
8819 | ||
6c5b2ebe | 8820 | gdb_assert (!sals.empty ()); |
6c95b8df | 8821 | |
6c5b2ebe | 8822 | for (const auto &sal : sals) |
0d381245 | 8823 | { |
0d381245 VP |
8824 | struct bp_location *loc; |
8825 | ||
8826 | if (from_tty) | |
5af949e3 UW |
8827 | { |
8828 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8829 | if (!loc_gdbarch) | |
8830 | loc_gdbarch = gdbarch; | |
8831 | ||
8832 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8833 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8834 | } |
0d381245 | 8835 | |
6c5b2ebe | 8836 | if (&sal == &sals[0]) |
0d381245 | 8837 | { |
d9b3f62e | 8838 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8839 | b->thread = thread; |
4a306c9a | 8840 | b->task = task; |
855a6e68 | 8841 | |
e1e01040 PA |
8842 | b->cond_string = cond_string.release (); |
8843 | b->extra_string = extra_string.release (); | |
0d381245 | 8844 | b->ignore_count = ignore_count; |
41447f92 | 8845 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8846 | b->disposition = disposition; |
6c95b8df | 8847 | |
44f238bb PA |
8848 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8849 | b->loc->inserted = 1; | |
8850 | ||
0fb4aa4b PA |
8851 | if (type == bp_static_tracepoint) |
8852 | { | |
d9b3f62e | 8853 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8854 | struct static_tracepoint_marker marker; |
8855 | ||
983af33b | 8856 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8857 | { |
8858 | /* We already know the marker exists, otherwise, we | |
8859 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8860 | const char *p |
8861 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8862 | const char *endp; |
0fb4aa4b | 8863 | |
f1735a53 | 8864 | p = skip_spaces (p); |
0fb4aa4b | 8865 | |
f1735a53 | 8866 | endp = skip_to_space (p); |
0fb4aa4b | 8867 | |
5d9310c4 | 8868 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8869 | |
3e43a32a MS |
8870 | printf_filtered (_("Probed static tracepoint " |
8871 | "marker \"%s\"\n"), | |
5d9310c4 | 8872 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8873 | } |
8874 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8875 | { | |
5d9310c4 | 8876 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8877 | |
3e43a32a MS |
8878 | printf_filtered (_("Probed static tracepoint " |
8879 | "marker \"%s\"\n"), | |
5d9310c4 | 8880 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8881 | } |
8882 | else | |
3e43a32a MS |
8883 | warning (_("Couldn't determine the static " |
8884 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8885 | } |
8886 | ||
0d381245 VP |
8887 | loc = b->loc; |
8888 | } | |
8889 | else | |
018d34a4 | 8890 | { |
39d61571 | 8891 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8892 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8893 | loc->inserted = 1; | |
0d381245 VP |
8894 | } |
8895 | ||
8896 | if (b->cond_string) | |
8897 | { | |
bbc13ae3 KS |
8898 | const char *arg = b->cond_string; |
8899 | ||
1bb9788d TT |
8900 | loc->cond = parse_exp_1 (&arg, loc->address, |
8901 | block_for_pc (loc->address), 0); | |
0d381245 | 8902 | if (*arg) |
588ae58c | 8903 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8904 | } |
e7e0cddf SS |
8905 | |
8906 | /* Dynamic printf requires and uses additional arguments on the | |
8907 | command line, otherwise it's an error. */ | |
8908 | if (type == bp_dprintf) | |
8909 | { | |
8910 | if (b->extra_string) | |
8911 | update_dprintf_command_list (b); | |
8912 | else | |
8913 | error (_("Format string required")); | |
8914 | } | |
8915 | else if (b->extra_string) | |
588ae58c | 8916 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8917 | } |
018d34a4 | 8918 | |
56435ebe | 8919 | b->display_canonical = display_canonical; |
f00aae0f | 8920 | if (location != NULL) |
d28cd78a | 8921 | b->location = std::move (location); |
018d34a4 | 8922 | else |
d28cd78a | 8923 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8924 | b->filter = filter.release (); |
d9b3f62e | 8925 | } |
018d34a4 | 8926 | |
d9b3f62e PA |
8927 | static void |
8928 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8929 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8930 | event_location_up &&location, |
e1e01040 PA |
8931 | gdb::unique_xmalloc_ptr<char> filter, |
8932 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8933 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8934 | enum bptype type, enum bpdisp disposition, |
8935 | int thread, int task, int ignore_count, | |
c0a91b2b | 8936 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8937 | int enabled, int internal, unsigned flags, |
8938 | int display_canonical) | |
d9b3f62e | 8939 | { |
a5e364af | 8940 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8941 | |
a5e364af | 8942 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8943 | sals, std::move (location), |
e1e01040 PA |
8944 | std::move (filter), |
8945 | std::move (cond_string), | |
8946 | std::move (extra_string), | |
d9b3f62e PA |
8947 | type, disposition, |
8948 | thread, task, ignore_count, | |
8949 | ops, from_tty, | |
44f238bb PA |
8950 | enabled, internal, flags, |
8951 | display_canonical); | |
d9b3f62e | 8952 | |
b270e6f9 | 8953 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8954 | } |
8955 | ||
8956 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8957 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8958 | value. COND_STRING, if not NULL, specified the condition to be | |
8959 | used for all breakpoints. Essentially the only case where | |
8960 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8961 | function. In that case, it's still not possible to specify | |
8962 | separate conditions for different overloaded functions, so | |
8963 | we take just a single condition string. | |
8964 | ||
c3f6f71d | 8965 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8966 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8967 | array contents). If the function fails (error() is called), the |
8968 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8969 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8970 | |
8971 | static void | |
8cdf0e15 | 8972 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8973 | struct linespec_result *canonical, |
e1e01040 PA |
8974 | gdb::unique_xmalloc_ptr<char> cond_string, |
8975 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8976 | enum bptype type, enum bpdisp disposition, |
8977 | int thread, int task, int ignore_count, | |
c0a91b2b | 8978 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8979 | int enabled, int internal, unsigned flags) |
c906108c | 8980 | { |
f8eba3c6 | 8981 | if (canonical->pre_expanded) |
6c5b2ebe | 8982 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8983 | |
6c5b2ebe | 8984 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8985 | { |
f00aae0f | 8986 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8987 | 'break', without arguments. */ |
ffc2605c | 8988 | event_location_up location |
f00aae0f | 8989 | = (canonical->location != NULL |
8e9e35b1 | 8990 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8991 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8992 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8993 | |
6c5b2ebe | 8994 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8995 | std::move (location), |
e1e01040 PA |
8996 | std::move (filter_string), |
8997 | std::move (cond_string), | |
8998 | std::move (extra_string), | |
e7e0cddf | 8999 | type, disposition, |
84f4c1fe | 9000 | thread, task, ignore_count, ops, |
44f238bb | 9001 | from_tty, enabled, internal, flags, |
56435ebe | 9002 | canonical->special_display); |
c3f6f71d | 9003 | } |
c3f6f71d | 9004 | } |
c906108c | 9005 | |
f00aae0f | 9006 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9007 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9008 | addresses found. LOCATION points to the end of the SAL (for |
9009 | linespec locations). | |
9998af43 TJB |
9010 | |
9011 | The array and the line spec strings are allocated on the heap, it is | |
9012 | the caller's responsibility to free them. */ | |
c906108c | 9013 | |
b9362cc7 | 9014 | static void |
f00aae0f | 9015 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9016 | struct linespec_result *canonical) |
c3f6f71d | 9017 | { |
f00aae0f KS |
9018 | struct symtab_and_line cursal; |
9019 | ||
9020 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9021 | { | |
a20714ff | 9022 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9023 | |
a20714ff | 9024 | if (spec == NULL) |
f00aae0f KS |
9025 | { |
9026 | /* The last displayed codepoint, if it's valid, is our default | |
9027 | breakpoint address. */ | |
9028 | if (last_displayed_sal_is_valid ()) | |
9029 | { | |
f00aae0f KS |
9030 | /* Set sal's pspace, pc, symtab, and line to the values |
9031 | corresponding to the last call to print_frame_info. | |
9032 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9033 | as the breakpoint line number is inappropriate otherwise. | |
9034 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9035 | symtab_and_line sal = get_last_displayed_sal (); |
9036 | CORE_ADDR pc = sal.pc; | |
9037 | ||
f00aae0f KS |
9038 | sal = find_pc_line (pc, 0); |
9039 | ||
9040 | /* "break" without arguments is equivalent to "break *PC" | |
9041 | where PC is the last displayed codepoint's address. So | |
9042 | make sure to set sal.explicit_pc to prevent GDB from | |
9043 | trying to expand the list of sals to include all other | |
9044 | instances with the same symtab and line. */ | |
9045 | sal.pc = pc; | |
9046 | sal.explicit_pc = 1; | |
9047 | ||
6c5b2ebe PA |
9048 | struct linespec_sals lsal; |
9049 | lsal.sals = {sal}; | |
f00aae0f KS |
9050 | lsal.canonical = NULL; |
9051 | ||
6c5b2ebe | 9052 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9053 | return; |
9054 | } | |
9055 | else | |
9056 | error (_("No default breakpoint address now.")); | |
c906108c | 9057 | } |
c906108c | 9058 | } |
f00aae0f KS |
9059 | |
9060 | /* Force almost all breakpoints to be in terms of the | |
9061 | current_source_symtab (which is decode_line_1's default). | |
9062 | This should produce the results we want almost all of the | |
9063 | time while leaving default_breakpoint_* alone. | |
9064 | ||
9065 | ObjC: However, don't match an Objective-C method name which | |
9066 | may have a '+' or '-' succeeded by a '['. */ | |
9067 | cursal = get_current_source_symtab_and_line (); | |
9068 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9069 | { |
a20714ff | 9070 | const char *spec = NULL; |
cc80f267 | 9071 | |
f00aae0f | 9072 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9073 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9074 | |
f00aae0f | 9075 | if (!cursal.symtab |
a20714ff PA |
9076 | || (spec != NULL |
9077 | && strchr ("+-", spec[0]) != NULL | |
9078 | && spec[1] != '[')) | |
f00aae0f | 9079 | { |
c2f4122d | 9080 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9081 | get_last_displayed_symtab (), |
9082 | get_last_displayed_line (), | |
9083 | canonical, NULL, NULL); | |
9084 | return; | |
9085 | } | |
c906108c | 9086 | } |
f00aae0f | 9087 | |
c2f4122d | 9088 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9089 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9090 | } |
c906108c | 9091 | |
c906108c | 9092 | |
c3f6f71d | 9093 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9094 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9095 | |
b9362cc7 | 9096 | static void |
6c5b2ebe | 9097 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9098 | { |
6c5b2ebe PA |
9099 | for (auto &sal : sals) |
9100 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9101 | } |
9102 | ||
7a697b8d SS |
9103 | /* Fast tracepoints may have restrictions on valid locations. For |
9104 | instance, a fast tracepoint using a jump instead of a trap will | |
9105 | likely have to overwrite more bytes than a trap would, and so can | |
9106 | only be placed where the instruction is longer than the jump, or a | |
9107 | multi-instruction sequence does not have a jump into the middle of | |
9108 | it, etc. */ | |
9109 | ||
9110 | static void | |
9111 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9112 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9113 | { |
6c5b2ebe | 9114 | for (const auto &sal : sals) |
7a697b8d | 9115 | { |
f8eba3c6 TT |
9116 | struct gdbarch *sarch; |
9117 | ||
6c5b2ebe | 9118 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9119 | /* We fall back to GDBARCH if there is no architecture |
9120 | associated with SAL. */ | |
9121 | if (sarch == NULL) | |
9122 | sarch = gdbarch; | |
281d762b TT |
9123 | std::string msg; |
9124 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9125 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9126 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9127 | } |
9128 | } | |
9129 | ||
018d34a4 VP |
9130 | /* Given TOK, a string specification of condition and thread, as |
9131 | accepted by the 'break' command, extract the condition | |
9132 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9133 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9134 | If no condition is found, *COND_STRING is set to NULL. |
9135 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9136 | |
9137 | static void | |
bbc13ae3 | 9138 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9139 | char **cond_string, int *thread, int *task, |
9140 | char **rest) | |
018d34a4 VP |
9141 | { |
9142 | *cond_string = NULL; | |
9143 | *thread = -1; | |
ed1d1739 KS |
9144 | *task = 0; |
9145 | *rest = NULL; | |
9146 | ||
018d34a4 VP |
9147 | while (tok && *tok) |
9148 | { | |
bbc13ae3 | 9149 | const char *end_tok; |
018d34a4 | 9150 | int toklen; |
bbc13ae3 KS |
9151 | const char *cond_start = NULL; |
9152 | const char *cond_end = NULL; | |
cc59ec59 | 9153 | |
f1735a53 | 9154 | tok = skip_spaces (tok); |
e7e0cddf SS |
9155 | |
9156 | if ((*tok == '"' || *tok == ',') && rest) | |
9157 | { | |
9158 | *rest = savestring (tok, strlen (tok)); | |
9159 | return; | |
9160 | } | |
9161 | ||
f1735a53 | 9162 | end_tok = skip_to_space (tok); |
d634f2de | 9163 | |
018d34a4 | 9164 | toklen = end_tok - tok; |
d634f2de | 9165 | |
018d34a4 VP |
9166 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9167 | { | |
9168 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9169 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9170 | cond_end = tok; |
d634f2de | 9171 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9172 | } |
9173 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9174 | { | |
5d5658a1 PA |
9175 | const char *tmptok; |
9176 | struct thread_info *thr; | |
d634f2de | 9177 | |
018d34a4 | 9178 | tok = end_tok + 1; |
5d5658a1 | 9179 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9180 | if (tok == tmptok) |
9181 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9182 | *thread = thr->global_num; |
bbc13ae3 | 9183 | tok = tmptok; |
018d34a4 | 9184 | } |
4a306c9a JB |
9185 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9186 | { | |
9187 | char *tmptok; | |
9188 | ||
9189 | tok = end_tok + 1; | |
bbc13ae3 | 9190 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9191 | if (tok == tmptok) |
9192 | error (_("Junk after task keyword.")); | |
9193 | if (!valid_task_id (*task)) | |
b6199126 | 9194 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9195 | tok = tmptok; |
4a306c9a | 9196 | } |
e7e0cddf SS |
9197 | else if (rest) |
9198 | { | |
9199 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9200 | return; |
e7e0cddf | 9201 | } |
018d34a4 VP |
9202 | else |
9203 | error (_("Junk at end of arguments.")); | |
9204 | } | |
9205 | } | |
9206 | ||
0fb4aa4b PA |
9207 | /* Decode a static tracepoint marker spec. */ |
9208 | ||
6c5b2ebe | 9209 | static std::vector<symtab_and_line> |
f00aae0f | 9210 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9211 | { |
f00aae0f KS |
9212 | const char *p = &(*arg_p)[3]; |
9213 | const char *endp; | |
0fb4aa4b | 9214 | |
f1735a53 | 9215 | p = skip_spaces (p); |
0fb4aa4b | 9216 | |
f1735a53 | 9217 | endp = skip_to_space (p); |
0fb4aa4b | 9218 | |
81b1e71c | 9219 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9220 | |
5d9310c4 SM |
9221 | std::vector<static_tracepoint_marker> markers |
9222 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9223 | if (markers.empty ()) | |
81b1e71c TT |
9224 | error (_("No known static tracepoint marker named %s"), |
9225 | marker_str.c_str ()); | |
0fb4aa4b | 9226 | |
6c5b2ebe | 9227 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9228 | sals.reserve (markers.size ()); |
0fb4aa4b | 9229 | |
5d9310c4 | 9230 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9231 | { |
5d9310c4 SM |
9232 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9233 | sal.pc = marker.address; | |
6c5b2ebe | 9234 | sals.push_back (sal); |
5d9310c4 | 9235 | } |
0fb4aa4b | 9236 | |
0fb4aa4b PA |
9237 | *arg_p = endp; |
9238 | return sals; | |
9239 | } | |
9240 | ||
f00aae0f | 9241 | /* See breakpoint.h. */ |
0101ce28 | 9242 | |
8cdf0e15 VP |
9243 | int |
9244 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9245 | const struct event_location *location, |
9246 | const char *cond_string, | |
9247 | int thread, const char *extra_string, | |
f00aae0f | 9248 | int parse_extra, |
0fb4aa4b | 9249 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9250 | int ignore_count, |
9251 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9252 | const struct breakpoint_ops *ops, |
44f238bb PA |
9253 | int from_tty, int enabled, int internal, |
9254 | unsigned flags) | |
c3f6f71d | 9255 | { |
7efd8fc2 | 9256 | struct linespec_result canonical; |
80c99de1 | 9257 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9258 | int pending = 0; |
4a306c9a | 9259 | int task = 0; |
86b17b60 | 9260 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9261 | |
348d480f PA |
9262 | gdb_assert (ops != NULL); |
9263 | ||
f00aae0f KS |
9264 | /* If extra_string isn't useful, set it to NULL. */ |
9265 | if (extra_string != NULL && *extra_string == '\0') | |
9266 | extra_string = NULL; | |
9267 | ||
492d29ea | 9268 | TRY |
b78a6381 | 9269 | { |
f00aae0f | 9270 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9271 | } |
492d29ea | 9272 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9273 | { |
492d29ea PA |
9274 | /* If caller is interested in rc value from parse, set |
9275 | value. */ | |
9276 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9277 | { |
05ff989b AC |
9278 | /* If pending breakpoint support is turned off, throw |
9279 | error. */ | |
fa8d40ab JJ |
9280 | |
9281 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9282 | throw_exception (e); |
9283 | ||
9284 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9285 | |
05ff989b AC |
9286 | /* If pending breakpoint support is auto query and the user |
9287 | selects no, then simply return the error code. */ | |
059fb39f | 9288 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9289 | && !nquery (_("Make %s pending on future shared library load? "), |
9290 | bptype_string (type_wanted))) | |
fd9b8c24 | 9291 | return 0; |
fa8d40ab | 9292 | |
05ff989b AC |
9293 | /* At this point, either the user was queried about setting |
9294 | a pending breakpoint and selected yes, or pending | |
9295 | breakpoint behavior is on and thus a pending breakpoint | |
9296 | is defaulted on behalf of the user. */ | |
f00aae0f | 9297 | pending = 1; |
0101ce28 | 9298 | } |
492d29ea PA |
9299 | else |
9300 | throw_exception (e); | |
0101ce28 | 9301 | } |
492d29ea PA |
9302 | END_CATCH |
9303 | ||
6c5b2ebe | 9304 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9305 | return 0; |
c3f6f71d | 9306 | |
c3f6f71d JM |
9307 | /* ----------------------------- SNIP ----------------------------- |
9308 | Anything added to the cleanup chain beyond this point is assumed | |
9309 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9310 | then the memory is not reclaimed. */ |
9311 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9312 | |
c3f6f71d JM |
9313 | /* Resolve all line numbers to PC's and verify that the addresses |
9314 | are ok for the target. */ | |
0101ce28 | 9315 | if (!pending) |
f8eba3c6 | 9316 | { |
6c5b2ebe PA |
9317 | for (auto &lsal : canonical.lsals) |
9318 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9319 | } |
c3f6f71d | 9320 | |
7a697b8d | 9321 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9322 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9323 | { |
6c5b2ebe PA |
9324 | for (const auto &lsal : canonical.lsals) |
9325 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9326 | } |
7a697b8d | 9327 | |
c3f6f71d JM |
9328 | /* Verify that condition can be parsed, before setting any |
9329 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9330 | breakpoint. */ |
0101ce28 | 9331 | if (!pending) |
c3f6f71d | 9332 | { |
e1e01040 PA |
9333 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9334 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9335 | ||
f00aae0f | 9336 | if (parse_extra) |
72b2ff0e | 9337 | { |
0878d0fa | 9338 | char *rest; |
e1e01040 | 9339 | char *cond; |
52d361e1 | 9340 | |
6c5b2ebe | 9341 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9342 | |
0878d0fa YQ |
9343 | /* Here we only parse 'arg' to separate condition |
9344 | from thread number, so parsing in context of first | |
9345 | sal is OK. When setting the breakpoint we'll | |
9346 | re-parse it in context of each sal. */ | |
9347 | ||
6c5b2ebe | 9348 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9349 | &cond, &thread, &task, &rest); |
9350 | cond_string_copy.reset (cond); | |
9351 | extra_string_copy.reset (rest); | |
72b2ff0e | 9352 | } |
2f069f6f | 9353 | else |
72b2ff0e | 9354 | { |
f00aae0f KS |
9355 | if (type_wanted != bp_dprintf |
9356 | && extra_string != NULL && *extra_string != '\0') | |
9357 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9358 | |
9359 | /* Create a private copy of condition string. */ | |
9360 | if (cond_string) | |
e1e01040 | 9361 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9362 | /* Create a private copy of any extra string. */ |
9363 | if (extra_string) | |
e1e01040 | 9364 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9365 | } |
0fb4aa4b | 9366 | |
52d361e1 | 9367 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9368 | std::move (cond_string_copy), |
9369 | std::move (extra_string_copy), | |
9370 | type_wanted, | |
d9b3f62e PA |
9371 | tempflag ? disp_del : disp_donttouch, |
9372 | thread, task, ignore_count, ops, | |
44f238bb | 9373 | from_tty, enabled, internal, flags); |
c906108c | 9374 | } |
0101ce28 JJ |
9375 | else |
9376 | { | |
a5e364af | 9377 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9378 | |
a5e364af | 9379 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9380 | b->location = copy_event_location (location); |
bfccc43c | 9381 | |
f00aae0f KS |
9382 | if (parse_extra) |
9383 | b->cond_string = NULL; | |
e12c7713 MK |
9384 | else |
9385 | { | |
9386 | /* Create a private copy of condition string. */ | |
e1e01040 | 9387 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9388 | b->thread = thread; |
e12c7713 | 9389 | } |
f00aae0f KS |
9390 | |
9391 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9392 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9393 | b->ignore_count = ignore_count; |
0101ce28 | 9394 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9395 | b->condition_not_parsed = 1; |
41447f92 | 9396 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9397 | if ((type_wanted != bp_breakpoint |
9398 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9399 | b->pspace = current_program_space; |
8bea4e01 | 9400 | |
b270e6f9 | 9401 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9402 | } |
9403 | ||
6c5b2ebe | 9404 | if (canonical.lsals.size () > 1) |
95a42b64 | 9405 | { |
3e43a32a MS |
9406 | warning (_("Multiple breakpoints were set.\nUse the " |
9407 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9408 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9409 | } |
9410 | ||
80c99de1 PA |
9411 | /* That's it. Discard the cleanups for data inserted into the |
9412 | breakpoint. */ | |
9413 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9414 | |
80c99de1 | 9415 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9416 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9417 | |
9418 | return 1; | |
c3f6f71d | 9419 | } |
c906108c | 9420 | |
348d480f | 9421 | /* Set a breakpoint. |
72b2ff0e VP |
9422 | ARG is a string describing breakpoint address, |
9423 | condition, and thread. | |
9424 | FLAG specifies if a breakpoint is hardware on, | |
9425 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9426 | and BP_TEMPFLAG. */ | |
348d480f | 9427 | |
98deb0da | 9428 | static void |
f2fc3015 | 9429 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9430 | { |
72b2ff0e | 9431 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9432 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9433 | ? bp_hardware_breakpoint | |
9434 | : bp_breakpoint); | |
55aa24fb | 9435 | struct breakpoint_ops *ops; |
f00aae0f | 9436 | |
ffc2605c | 9437 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9438 | |
9439 | /* Matching breakpoints on probes. */ | |
5b56227b | 9440 | if (location != NULL |
ffc2605c | 9441 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9442 | ops = &bkpt_probe_breakpoint_ops; |
9443 | else | |
9444 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9445 | |
8cdf0e15 | 9446 | create_breakpoint (get_current_arch (), |
ffc2605c | 9447 | location.get (), |
f00aae0f | 9448 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9449 | tempflag, type_wanted, |
8cdf0e15 VP |
9450 | 0 /* Ignore count */, |
9451 | pending_break_support, | |
55aa24fb | 9452 | ops, |
8cdf0e15 | 9453 | from_tty, |
84f4c1fe | 9454 | 1 /* enabled */, |
44f238bb PA |
9455 | 0 /* internal */, |
9456 | 0); | |
c906108c SS |
9457 | } |
9458 | ||
c906108c SS |
9459 | /* Helper function for break_command_1 and disassemble_command. */ |
9460 | ||
9461 | void | |
fba45db2 | 9462 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9463 | { |
9464 | CORE_ADDR pc; | |
9465 | ||
9466 | if (sal->pc == 0 && sal->symtab != NULL) | |
9467 | { | |
9468 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9469 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9470 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9471 | sal->pc = pc; |
6a048695 | 9472 | |
4a64f543 MS |
9473 | /* If this SAL corresponds to a breakpoint inserted using a line |
9474 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9475 | if (sal->explicit_line) |
059acae7 | 9476 | skip_prologue_sal (sal); |
c906108c SS |
9477 | } |
9478 | ||
9479 | if (sal->section == 0 && sal->symtab != NULL) | |
9480 | { | |
346d1dfe | 9481 | const struct blockvector *bv; |
3977b71f | 9482 | const struct block *b; |
c5aa993b | 9483 | struct symbol *sym; |
c906108c | 9484 | |
43f3e411 DE |
9485 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9486 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9487 | if (bv != NULL) |
9488 | { | |
7f0df278 | 9489 | sym = block_linkage_function (b); |
c906108c SS |
9490 | if (sym != NULL) |
9491 | { | |
eb822aa6 DE |
9492 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9493 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9494 | sym); | |
c906108c SS |
9495 | } |
9496 | else | |
9497 | { | |
4a64f543 MS |
9498 | /* It really is worthwhile to have the section, so we'll |
9499 | just have to look harder. This case can be executed | |
9500 | if we have line numbers but no functions (as can | |
9501 | happen in assembly source). */ | |
c906108c | 9502 | |
5ed8105e | 9503 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9504 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9505 | |
5ed8105e | 9506 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9507 | if (msym.minsym) |
efd66ac6 | 9508 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9509 | } |
9510 | } | |
9511 | } | |
9512 | } | |
9513 | ||
9514 | void | |
0b39b52e | 9515 | break_command (const char *arg, int from_tty) |
c906108c | 9516 | { |
db107f19 | 9517 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9518 | } |
9519 | ||
c906108c | 9520 | void |
0b39b52e | 9521 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9522 | { |
db107f19 | 9523 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9524 | } |
9525 | ||
c906108c | 9526 | static void |
0b39b52e | 9527 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9528 | { |
db107f19 | 9529 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9530 | } |
9531 | ||
9532 | static void | |
0b39b52e | 9533 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9534 | { |
db107f19 | 9535 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9536 | } |
9537 | ||
9538 | static void | |
ee7ddd71 | 9539 | stop_command (const char *arg, int from_tty) |
c906108c | 9540 | { |
a3f17187 | 9541 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9542 | Usage: stop in <function | address>\n\ |
a3f17187 | 9543 | stop at <line>\n")); |
c906108c SS |
9544 | } |
9545 | ||
9546 | static void | |
4495129a | 9547 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9548 | { |
9549 | int badInput = 0; | |
9550 | ||
c5aa993b | 9551 | if (arg == (char *) NULL) |
c906108c SS |
9552 | badInput = 1; |
9553 | else if (*arg != '*') | |
9554 | { | |
4495129a | 9555 | const char *argptr = arg; |
c906108c SS |
9556 | int hasColon = 0; |
9557 | ||
4a64f543 | 9558 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9559 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9560 | function/method name. */ |
c906108c | 9561 | while (*argptr && !hasColon) |
c5aa993b JM |
9562 | { |
9563 | hasColon = (*argptr == ':'); | |
9564 | argptr++; | |
9565 | } | |
c906108c SS |
9566 | |
9567 | if (hasColon) | |
c5aa993b | 9568 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9569 | else |
c5aa993b | 9570 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9571 | } |
9572 | ||
9573 | if (badInput) | |
a3f17187 | 9574 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9575 | else |
db107f19 | 9576 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9577 | } |
9578 | ||
9579 | static void | |
4495129a | 9580 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9581 | { |
9582 | int badInput = 0; | |
9583 | ||
c5aa993b | 9584 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9585 | badInput = 1; |
9586 | else | |
9587 | { | |
4495129a | 9588 | const char *argptr = arg; |
c906108c SS |
9589 | int hasColon = 0; |
9590 | ||
4a64f543 MS |
9591 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9592 | it is probably a line number. */ | |
c906108c | 9593 | while (*argptr && !hasColon) |
c5aa993b JM |
9594 | { |
9595 | hasColon = (*argptr == ':'); | |
9596 | argptr++; | |
9597 | } | |
c906108c SS |
9598 | |
9599 | if (hasColon) | |
c5aa993b | 9600 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9601 | else |
c5aa993b | 9602 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9603 | } |
9604 | ||
9605 | if (badInput) | |
a3f17187 | 9606 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9607 | else |
db107f19 | 9608 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9609 | } |
9610 | ||
e7e0cddf SS |
9611 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9612 | with a prewired command list consisting of a single output command, | |
9613 | built from extra arguments supplied on the dprintf command | |
9614 | line. */ | |
9615 | ||
da821c7b | 9616 | static void |
0b39b52e | 9617 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9618 | { |
ffc2605c | 9619 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9620 | |
9621 | /* If non-NULL, ARG should have been advanced past the location; | |
9622 | the next character must be ','. */ | |
9623 | if (arg != NULL) | |
9624 | { | |
9625 | if (arg[0] != ',' || arg[1] == '\0') | |
9626 | error (_("Format string required")); | |
9627 | else | |
9628 | { | |
9629 | /* Skip the comma. */ | |
9630 | ++arg; | |
9631 | } | |
9632 | } | |
9633 | ||
e7e0cddf | 9634 | create_breakpoint (get_current_arch (), |
ffc2605c | 9635 | location.get (), |
f00aae0f | 9636 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9637 | 0, bp_dprintf, |
9638 | 0 /* Ignore count */, | |
9639 | pending_break_support, | |
9640 | &dprintf_breakpoint_ops, | |
9641 | from_tty, | |
9642 | 1 /* enabled */, | |
9643 | 0 /* internal */, | |
9644 | 0); | |
9645 | } | |
9646 | ||
d3ce09f5 | 9647 | static void |
0b39b52e | 9648 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9649 | { |
9650 | error (_("May only run agent-printf on the target")); | |
9651 | } | |
9652 | ||
f1310107 TJB |
9653 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9654 | ranged breakpoints. */ | |
9655 | ||
9656 | static int | |
9657 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9658 | const address_space *aspace, |
09ac7c10 TT |
9659 | CORE_ADDR bp_addr, |
9660 | const struct target_waitstatus *ws) | |
f1310107 | 9661 | { |
09ac7c10 | 9662 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9663 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9664 | return 0; |
9665 | ||
f1310107 TJB |
9666 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9667 | bl->length, aspace, bp_addr); | |
9668 | } | |
9669 | ||
9670 | /* Implement the "resources_needed" breakpoint_ops method for | |
9671 | ranged breakpoints. */ | |
9672 | ||
9673 | static int | |
9674 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9675 | { | |
9676 | return target_ranged_break_num_registers (); | |
9677 | } | |
9678 | ||
9679 | /* Implement the "print_it" breakpoint_ops method for | |
9680 | ranged breakpoints. */ | |
9681 | ||
9682 | static enum print_stop_action | |
348d480f | 9683 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9684 | { |
348d480f | 9685 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9686 | struct bp_location *bl = b->loc; |
79a45e25 | 9687 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9688 | |
9689 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9690 | ||
9691 | /* Ranged breakpoints have only one location. */ | |
9692 | gdb_assert (bl && bl->next == NULL); | |
9693 | ||
9694 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9695 | |
9696 | maybe_print_thread_hit_breakpoint (uiout); | |
9697 | ||
f1310107 | 9698 | if (b->disposition == disp_del) |
112e8700 | 9699 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9700 | else |
112e8700 SM |
9701 | uiout->text ("Ranged breakpoint "); |
9702 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9703 | { |
112e8700 | 9704 | uiout->field_string ("reason", |
f1310107 | 9705 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9706 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9707 | } |
112e8700 SM |
9708 | uiout->field_int ("bkptno", b->number); |
9709 | uiout->text (", "); | |
f1310107 TJB |
9710 | |
9711 | return PRINT_SRC_AND_LOC; | |
9712 | } | |
9713 | ||
9714 | /* Implement the "print_one" breakpoint_ops method for | |
9715 | ranged breakpoints. */ | |
9716 | ||
9717 | static void | |
9718 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9719 | struct bp_location **last_loc) | |
9720 | { | |
9721 | struct bp_location *bl = b->loc; | |
9722 | struct value_print_options opts; | |
79a45e25 | 9723 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9724 | |
9725 | /* Ranged breakpoints have only one location. */ | |
9726 | gdb_assert (bl && bl->next == NULL); | |
9727 | ||
9728 | get_user_print_options (&opts); | |
9729 | ||
9730 | if (opts.addressprint) | |
9731 | /* We don't print the address range here, it will be printed later | |
9732 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9733 | uiout->field_skip ("addr"); |
f1310107 TJB |
9734 | annotate_field (5); |
9735 | print_breakpoint_location (b, bl); | |
9736 | *last_loc = bl; | |
9737 | } | |
9738 | ||
9739 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9740 | ranged breakpoints. */ | |
9741 | ||
9742 | static void | |
9743 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9744 | struct ui_out *uiout) | |
9745 | { | |
9746 | CORE_ADDR address_start, address_end; | |
9747 | struct bp_location *bl = b->loc; | |
d7e74731 | 9748 | string_file stb; |
f1310107 TJB |
9749 | |
9750 | gdb_assert (bl); | |
9751 | ||
9752 | address_start = bl->address; | |
9753 | address_end = address_start + bl->length - 1; | |
9754 | ||
112e8700 | 9755 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9756 | stb.printf ("[%s, %s]", |
9757 | print_core_address (bl->gdbarch, address_start), | |
9758 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9759 | uiout->field_stream ("addr", stb); |
9760 | uiout->text ("\n"); | |
f1310107 TJB |
9761 | } |
9762 | ||
9763 | /* Implement the "print_mention" breakpoint_ops method for | |
9764 | ranged breakpoints. */ | |
9765 | ||
9766 | static void | |
9767 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9768 | { | |
9769 | struct bp_location *bl = b->loc; | |
79a45e25 | 9770 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9771 | |
9772 | gdb_assert (bl); | |
9773 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9774 | ||
2d33446d TT |
9775 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9776 | b->number, paddress (bl->gdbarch, bl->address), | |
9777 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9778 | } |
9779 | ||
9780 | /* Implement the "print_recreate" breakpoint_ops method for | |
9781 | ranged breakpoints. */ | |
9782 | ||
9783 | static void | |
9784 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9785 | { | |
f00aae0f | 9786 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9787 | event_location_to_string (b->location.get ()), |
9788 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9789 | print_recreate_thread (b, fp); |
f1310107 TJB |
9790 | } |
9791 | ||
9792 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9793 | ||
2060206e | 9794 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9795 | |
9796 | /* Find the address where the end of the breakpoint range should be | |
9797 | placed, given the SAL of the end of the range. This is so that if | |
9798 | the user provides a line number, the end of the range is set to the | |
9799 | last instruction of the given line. */ | |
9800 | ||
9801 | static CORE_ADDR | |
9802 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9803 | { | |
9804 | CORE_ADDR end; | |
9805 | ||
9806 | /* If the user provided a PC value, use it. Otherwise, | |
9807 | find the address of the end of the given location. */ | |
9808 | if (sal.explicit_pc) | |
9809 | end = sal.pc; | |
9810 | else | |
9811 | { | |
9812 | int ret; | |
9813 | CORE_ADDR start; | |
9814 | ||
9815 | ret = find_line_pc_range (sal, &start, &end); | |
9816 | if (!ret) | |
9817 | error (_("Could not find location of the end of the range.")); | |
9818 | ||
9819 | /* find_line_pc_range returns the start of the next line. */ | |
9820 | end--; | |
9821 | } | |
9822 | ||
9823 | return end; | |
9824 | } | |
9825 | ||
9826 | /* Implement the "break-range" CLI command. */ | |
9827 | ||
9828 | static void | |
0b39b52e | 9829 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9830 | { |
f2fc3015 | 9831 | const char *arg_start; |
f1310107 TJB |
9832 | struct linespec_result canonical_start, canonical_end; |
9833 | int bp_count, can_use_bp, length; | |
9834 | CORE_ADDR end; | |
9835 | struct breakpoint *b; | |
f1310107 TJB |
9836 | |
9837 | /* We don't support software ranged breakpoints. */ | |
9838 | if (target_ranged_break_num_registers () < 0) | |
9839 | error (_("This target does not support hardware ranged breakpoints.")); | |
9840 | ||
9841 | bp_count = hw_breakpoint_used_count (); | |
9842 | bp_count += target_ranged_break_num_registers (); | |
9843 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9844 | bp_count, 0); | |
9845 | if (can_use_bp < 0) | |
9846 | error (_("Hardware breakpoints used exceeds limit.")); | |
9847 | ||
f8eba3c6 | 9848 | arg = skip_spaces (arg); |
f1310107 TJB |
9849 | if (arg == NULL || arg[0] == '\0') |
9850 | error(_("No address range specified.")); | |
9851 | ||
f8eba3c6 | 9852 | arg_start = arg; |
ffc2605c TT |
9853 | event_location_up start_location = string_to_event_location (&arg, |
9854 | current_language); | |
9855 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9856 | |
9857 | if (arg[0] != ',') | |
9858 | error (_("Too few arguments.")); | |
6c5b2ebe | 9859 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9860 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9861 | |
6c5b2ebe | 9862 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9863 | |
6c5b2ebe PA |
9864 | if (canonical_start.lsals.size () > 1 |
9865 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9866 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9867 | ||
6c5b2ebe | 9868 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9869 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9870 | |
9871 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9872 | arg = skip_spaces (arg); |
f1310107 TJB |
9873 | |
9874 | /* Parse the end location. */ | |
9875 | ||
f1310107 TJB |
9876 | arg_start = arg; |
9877 | ||
f8eba3c6 | 9878 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9879 | parse_breakpoint_sals because we need to specify the start location's |
9880 | symtab and line as the default symtab and line for the end of the | |
9881 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9882 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9883 | event_location_up end_location = string_to_event_location (&arg, |
9884 | current_language); | |
9885 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9886 | sal_start.symtab, sal_start.line, |
9887 | &canonical_end, NULL, NULL); | |
9888 | ||
6c5b2ebe | 9889 | if (canonical_end.lsals.empty ()) |
f1310107 | 9890 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9891 | |
6c5b2ebe PA |
9892 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9893 | if (canonical_end.lsals.size () > 1 | |
9894 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9895 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9896 | ||
6c5b2ebe | 9897 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9898 | |
9899 | end = find_breakpoint_range_end (sal_end); | |
9900 | if (sal_start.pc > end) | |
177b42fe | 9901 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9902 | |
9903 | length = end - sal_start.pc + 1; | |
9904 | if (length < 0) | |
9905 | /* Length overflowed. */ | |
9906 | error (_("Address range too large.")); | |
9907 | else if (length == 1) | |
9908 | { | |
9909 | /* This range is simple enough to be handled by | |
9910 | the `hbreak' command. */ | |
81b1e71c | 9911 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9912 | |
9913 | return; | |
9914 | } | |
9915 | ||
9916 | /* Now set up the breakpoint. */ | |
9917 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9918 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9919 | set_breakpoint_count (breakpoint_count + 1); |
9920 | b->number = breakpoint_count; | |
9921 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9922 | b->location = std::move (start_location); |
9923 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9924 | b->loc->length = length; |
9925 | ||
f1310107 | 9926 | mention (b); |
76727919 | 9927 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9928 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9929 | } |
9930 | ||
4a64f543 MS |
9931 | /* Return non-zero if EXP is verified as constant. Returned zero |
9932 | means EXP is variable. Also the constant detection may fail for | |
9933 | some constant expressions and in such case still falsely return | |
9934 | zero. */ | |
2e6e3d9c | 9935 | |
65d79d4b SDJ |
9936 | static int |
9937 | watchpoint_exp_is_const (const struct expression *exp) | |
9938 | { | |
9939 | int i = exp->nelts; | |
9940 | ||
9941 | while (i > 0) | |
9942 | { | |
9943 | int oplenp, argsp; | |
9944 | ||
9945 | /* We are only interested in the descriptor of each element. */ | |
9946 | operator_length (exp, i, &oplenp, &argsp); | |
9947 | i -= oplenp; | |
9948 | ||
9949 | switch (exp->elts[i].opcode) | |
9950 | { | |
9951 | case BINOP_ADD: | |
9952 | case BINOP_SUB: | |
9953 | case BINOP_MUL: | |
9954 | case BINOP_DIV: | |
9955 | case BINOP_REM: | |
9956 | case BINOP_MOD: | |
9957 | case BINOP_LSH: | |
9958 | case BINOP_RSH: | |
9959 | case BINOP_LOGICAL_AND: | |
9960 | case BINOP_LOGICAL_OR: | |
9961 | case BINOP_BITWISE_AND: | |
9962 | case BINOP_BITWISE_IOR: | |
9963 | case BINOP_BITWISE_XOR: | |
9964 | case BINOP_EQUAL: | |
9965 | case BINOP_NOTEQUAL: | |
9966 | case BINOP_LESS: | |
9967 | case BINOP_GTR: | |
9968 | case BINOP_LEQ: | |
9969 | case BINOP_GEQ: | |
9970 | case BINOP_REPEAT: | |
9971 | case BINOP_COMMA: | |
9972 | case BINOP_EXP: | |
9973 | case BINOP_MIN: | |
9974 | case BINOP_MAX: | |
9975 | case BINOP_INTDIV: | |
9976 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9977 | case TERNOP_COND: |
9978 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9979 | |
9980 | case OP_LONG: | |
edd079d9 | 9981 | case OP_FLOAT: |
65d79d4b SDJ |
9982 | case OP_LAST: |
9983 | case OP_COMPLEX: | |
9984 | case OP_STRING: | |
65d79d4b SDJ |
9985 | case OP_ARRAY: |
9986 | case OP_TYPE: | |
608b4967 TT |
9987 | case OP_TYPEOF: |
9988 | case OP_DECLTYPE: | |
6e72ca20 | 9989 | case OP_TYPEID: |
65d79d4b SDJ |
9990 | case OP_NAME: |
9991 | case OP_OBJC_NSSTRING: | |
9992 | ||
9993 | case UNOP_NEG: | |
9994 | case UNOP_LOGICAL_NOT: | |
9995 | case UNOP_COMPLEMENT: | |
9996 | case UNOP_ADDR: | |
9997 | case UNOP_HIGH: | |
aeaa2474 | 9998 | case UNOP_CAST: |
9eaf6705 TT |
9999 | |
10000 | case UNOP_CAST_TYPE: | |
10001 | case UNOP_REINTERPRET_CAST: | |
10002 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10003 | /* Unary, binary and ternary operators: We have to check |
10004 | their operands. If they are constant, then so is the | |
10005 | result of that operation. For instance, if A and B are | |
10006 | determined to be constants, then so is "A + B". | |
10007 | ||
10008 | UNOP_IND is one exception to the rule above, because the | |
10009 | value of *ADDR is not necessarily a constant, even when | |
10010 | ADDR is. */ | |
65d79d4b SDJ |
10011 | break; |
10012 | ||
10013 | case OP_VAR_VALUE: | |
10014 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10015 | |
65d79d4b | 10016 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10017 | possible that a buggy compiler could mark a variable as |
10018 | constant even when it is not, and TYPE_CONST would return | |
10019 | true in this case, while SYMBOL_CLASS wouldn't. | |
10020 | ||
10021 | We also have to check for function symbols because they | |
10022 | are always constant. */ | |
65d79d4b SDJ |
10023 | { |
10024 | struct symbol *s = exp->elts[i + 2].symbol; | |
10025 | ||
10026 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10027 | && SYMBOL_CLASS (s) != LOC_CONST | |
10028 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10029 | return 0; | |
10030 | break; | |
10031 | } | |
10032 | ||
10033 | /* The default action is to return 0 because we are using | |
10034 | the optimistic approach here: If we don't know something, | |
10035 | then it is not a constant. */ | |
10036 | default: | |
10037 | return 0; | |
10038 | } | |
10039 | } | |
10040 | ||
10041 | return 1; | |
10042 | } | |
10043 | ||
c1fc2657 | 10044 | /* Watchpoint destructor. */ |
3a5c3e22 | 10045 | |
c1fc2657 | 10046 | watchpoint::~watchpoint () |
3a5c3e22 | 10047 | { |
c1fc2657 SM |
10048 | xfree (this->exp_string); |
10049 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10050 | } |
10051 | ||
348d480f PA |
10052 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10053 | ||
10054 | static void | |
10055 | re_set_watchpoint (struct breakpoint *b) | |
10056 | { | |
3a5c3e22 PA |
10057 | struct watchpoint *w = (struct watchpoint *) b; |
10058 | ||
348d480f PA |
10059 | /* Watchpoint can be either on expression using entirely global |
10060 | variables, or it can be on local variables. | |
10061 | ||
10062 | Watchpoints of the first kind are never auto-deleted, and even | |
10063 | persist across program restarts. Since they can use variables | |
10064 | from shared libraries, we need to reparse expression as libraries | |
10065 | are loaded and unloaded. | |
10066 | ||
10067 | Watchpoints on local variables can also change meaning as result | |
10068 | of solib event. For example, if a watchpoint uses both a local | |
10069 | and a global variables in expression, it's a local watchpoint, | |
10070 | but unloading of a shared library will make the expression | |
10071 | invalid. This is not a very common use case, but we still | |
10072 | re-evaluate expression, to avoid surprises to the user. | |
10073 | ||
10074 | Note that for local watchpoints, we re-evaluate it only if | |
10075 | watchpoints frame id is still valid. If it's not, it means the | |
10076 | watchpoint is out of scope and will be deleted soon. In fact, | |
10077 | I'm not sure we'll ever be called in this case. | |
10078 | ||
10079 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10080 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10081 | |
3a5c3e22 PA |
10082 | Don't do anything about disabled watchpoints, since they will be |
10083 | reevaluated again when enabled. */ | |
10084 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10085 | } |
10086 | ||
77b06cd7 TJB |
10087 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10088 | ||
10089 | static int | |
10090 | insert_watchpoint (struct bp_location *bl) | |
10091 | { | |
3a5c3e22 PA |
10092 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10093 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10094 | |
10095 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10096 | w->cond_exp.get ()); |
77b06cd7 TJB |
10097 | } |
10098 | ||
10099 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10100 | ||
10101 | static int | |
73971819 | 10102 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10103 | { |
3a5c3e22 PA |
10104 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10105 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10106 | |
10107 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10108 | w->cond_exp.get ()); |
e09342b5 TJB |
10109 | } |
10110 | ||
e09342b5 | 10111 | static int |
348d480f | 10112 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10113 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10114 | const struct target_waitstatus *ws) |
e09342b5 | 10115 | { |
348d480f | 10116 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10117 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10118 | |
348d480f PA |
10119 | /* Continuable hardware watchpoints are treated as non-existent if the |
10120 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10121 | some data address). Otherwise gdb won't stop on a break instruction | |
10122 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10123 | been defined. Also skip watchpoints which we know did not trigger | |
10124 | (did not match the data address). */ | |
10125 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10126 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10127 | return 0; |
9c06b0b4 | 10128 | |
348d480f | 10129 | return 1; |
9c06b0b4 TJB |
10130 | } |
10131 | ||
348d480f PA |
10132 | static void |
10133 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10134 | { |
348d480f | 10135 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10136 | |
348d480f | 10137 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10138 | } |
10139 | ||
10140 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10141 | hardware watchpoints. */ |
9c06b0b4 TJB |
10142 | |
10143 | static int | |
348d480f | 10144 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10145 | { |
3a5c3e22 PA |
10146 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10147 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10148 | |
10149 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10150 | } |
10151 | ||
10152 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10153 | hardware watchpoints. */ |
9c06b0b4 TJB |
10154 | |
10155 | static int | |
348d480f | 10156 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10157 | { |
efa80663 PA |
10158 | /* Read and access watchpoints only work with hardware support. */ |
10159 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10160 | } |
10161 | ||
9c06b0b4 | 10162 | static enum print_stop_action |
348d480f | 10163 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10164 | { |
348d480f | 10165 | struct breakpoint *b; |
348d480f | 10166 | enum print_stop_action result; |
3a5c3e22 | 10167 | struct watchpoint *w; |
79a45e25 | 10168 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10169 | |
10170 | gdb_assert (bs->bp_location_at != NULL); | |
10171 | ||
348d480f | 10172 | b = bs->breakpoint_at; |
3a5c3e22 | 10173 | w = (struct watchpoint *) b; |
348d480f | 10174 | |
f303dbd6 PA |
10175 | annotate_watchpoint (b->number); |
10176 | maybe_print_thread_hit_breakpoint (uiout); | |
10177 | ||
d7e74731 PA |
10178 | string_file stb; |
10179 | ||
76f9c9cf | 10180 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10181 | switch (b->type) |
10182 | { | |
348d480f | 10183 | case bp_watchpoint: |
9c06b0b4 | 10184 | case bp_hardware_watchpoint: |
112e8700 SM |
10185 | if (uiout->is_mi_like_p ()) |
10186 | uiout->field_string | |
10187 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10188 | mention (b); |
76f9c9cf | 10189 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10190 | uiout->text ("\nOld value = "); |
850645cf | 10191 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10192 | uiout->field_stream ("old", stb); |
10193 | uiout->text ("\nNew value = "); | |
850645cf | 10194 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10195 | uiout->field_stream ("new", stb); |
10196 | uiout->text ("\n"); | |
348d480f PA |
10197 | /* More than one watchpoint may have been triggered. */ |
10198 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10199 | break; |
10200 | ||
10201 | case bp_read_watchpoint: | |
112e8700 SM |
10202 | if (uiout->is_mi_like_p ()) |
10203 | uiout->field_string | |
10204 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10205 | mention (b); |
76f9c9cf | 10206 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10207 | uiout->text ("\nValue = "); |
850645cf | 10208 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10209 | uiout->field_stream ("value", stb); |
10210 | uiout->text ("\n"); | |
348d480f | 10211 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10212 | break; |
10213 | ||
10214 | case bp_access_watchpoint: | |
348d480f PA |
10215 | if (bs->old_val != NULL) |
10216 | { | |
112e8700 SM |
10217 | if (uiout->is_mi_like_p ()) |
10218 | uiout->field_string | |
10219 | ("reason", | |
348d480f PA |
10220 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10221 | mention (b); | |
76f9c9cf | 10222 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10223 | uiout->text ("\nOld value = "); |
850645cf | 10224 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10225 | uiout->field_stream ("old", stb); |
10226 | uiout->text ("\nNew value = "); | |
348d480f PA |
10227 | } |
10228 | else | |
10229 | { | |
10230 | mention (b); | |
112e8700 SM |
10231 | if (uiout->is_mi_like_p ()) |
10232 | uiout->field_string | |
10233 | ("reason", | |
348d480f | 10234 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10235 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10236 | uiout->text ("\nValue = "); |
348d480f | 10237 | } |
850645cf | 10238 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10239 | uiout->field_stream ("new", stb); |
10240 | uiout->text ("\n"); | |
348d480f | 10241 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10242 | break; |
10243 | default: | |
348d480f | 10244 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10245 | } |
10246 | ||
348d480f PA |
10247 | return result; |
10248 | } | |
10249 | ||
10250 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10251 | watchpoints. */ | |
10252 | ||
10253 | static void | |
10254 | print_mention_watchpoint (struct breakpoint *b) | |
10255 | { | |
3a5c3e22 | 10256 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10257 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10258 | const char *tuple_name; |
348d480f PA |
10259 | |
10260 | switch (b->type) | |
10261 | { | |
10262 | case bp_watchpoint: | |
112e8700 | 10263 | uiout->text ("Watchpoint "); |
46b9c129 | 10264 | tuple_name = "wpt"; |
348d480f PA |
10265 | break; |
10266 | case bp_hardware_watchpoint: | |
112e8700 | 10267 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10268 | tuple_name = "wpt"; |
348d480f PA |
10269 | break; |
10270 | case bp_read_watchpoint: | |
112e8700 | 10271 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10272 | tuple_name = "hw-rwpt"; |
348d480f PA |
10273 | break; |
10274 | case bp_access_watchpoint: | |
112e8700 | 10275 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10276 | tuple_name = "hw-awpt"; |
348d480f PA |
10277 | break; |
10278 | default: | |
10279 | internal_error (__FILE__, __LINE__, | |
10280 | _("Invalid hardware watchpoint type.")); | |
10281 | } | |
10282 | ||
46b9c129 | 10283 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10284 | uiout->field_int ("number", b->number); |
10285 | uiout->text (": "); | |
10286 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10287 | } |
10288 | ||
10289 | /* Implement the "print_recreate" breakpoint_ops method for | |
10290 | watchpoints. */ | |
10291 | ||
10292 | static void | |
10293 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10294 | { | |
3a5c3e22 PA |
10295 | struct watchpoint *w = (struct watchpoint *) b; |
10296 | ||
348d480f PA |
10297 | switch (b->type) |
10298 | { | |
10299 | case bp_watchpoint: | |
10300 | case bp_hardware_watchpoint: | |
10301 | fprintf_unfiltered (fp, "watch"); | |
10302 | break; | |
10303 | case bp_read_watchpoint: | |
10304 | fprintf_unfiltered (fp, "rwatch"); | |
10305 | break; | |
10306 | case bp_access_watchpoint: | |
10307 | fprintf_unfiltered (fp, "awatch"); | |
10308 | break; | |
10309 | default: | |
10310 | internal_error (__FILE__, __LINE__, | |
10311 | _("Invalid watchpoint type.")); | |
10312 | } | |
10313 | ||
3a5c3e22 | 10314 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10315 | print_recreate_thread (b, fp); |
348d480f PA |
10316 | } |
10317 | ||
427cd150 TT |
10318 | /* Implement the "explains_signal" breakpoint_ops method for |
10319 | watchpoints. */ | |
10320 | ||
47591c29 | 10321 | static int |
427cd150 TT |
10322 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10323 | { | |
10324 | /* A software watchpoint cannot cause a signal other than | |
10325 | GDB_SIGNAL_TRAP. */ | |
10326 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10327 | return 0; |
427cd150 | 10328 | |
47591c29 | 10329 | return 1; |
427cd150 TT |
10330 | } |
10331 | ||
348d480f PA |
10332 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10333 | ||
2060206e | 10334 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10335 | |
10336 | /* Implement the "insert" breakpoint_ops method for | |
10337 | masked hardware watchpoints. */ | |
10338 | ||
10339 | static int | |
10340 | insert_masked_watchpoint (struct bp_location *bl) | |
10341 | { | |
3a5c3e22 PA |
10342 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10343 | ||
10344 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10345 | bl->watchpoint_type); |
10346 | } | |
10347 | ||
10348 | /* Implement the "remove" breakpoint_ops method for | |
10349 | masked hardware watchpoints. */ | |
10350 | ||
10351 | static int | |
73971819 | 10352 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10353 | { |
3a5c3e22 PA |
10354 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10355 | ||
10356 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10357 | bl->watchpoint_type); |
10358 | } | |
10359 | ||
10360 | /* Implement the "resources_needed" breakpoint_ops method for | |
10361 | masked hardware watchpoints. */ | |
10362 | ||
10363 | static int | |
10364 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10365 | { | |
3a5c3e22 PA |
10366 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10367 | ||
10368 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10369 | } |
10370 | ||
10371 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10372 | masked hardware watchpoints. */ | |
10373 | ||
10374 | static int | |
10375 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10376 | { | |
10377 | return 0; | |
10378 | } | |
10379 | ||
10380 | /* Implement the "print_it" breakpoint_ops method for | |
10381 | masked hardware watchpoints. */ | |
10382 | ||
10383 | static enum print_stop_action | |
10384 | print_it_masked_watchpoint (bpstat bs) | |
10385 | { | |
10386 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10387 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10388 | |
10389 | /* Masked watchpoints have only one location. */ | |
10390 | gdb_assert (b->loc && b->loc->next == NULL); | |
10391 | ||
f303dbd6 PA |
10392 | annotate_watchpoint (b->number); |
10393 | maybe_print_thread_hit_breakpoint (uiout); | |
10394 | ||
348d480f PA |
10395 | switch (b->type) |
10396 | { | |
10397 | case bp_hardware_watchpoint: | |
112e8700 SM |
10398 | if (uiout->is_mi_like_p ()) |
10399 | uiout->field_string | |
10400 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10401 | break; |
10402 | ||
10403 | case bp_read_watchpoint: | |
112e8700 SM |
10404 | if (uiout->is_mi_like_p ()) |
10405 | uiout->field_string | |
10406 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10407 | break; |
10408 | ||
10409 | case bp_access_watchpoint: | |
112e8700 SM |
10410 | if (uiout->is_mi_like_p ()) |
10411 | uiout->field_string | |
10412 | ("reason", | |
348d480f PA |
10413 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10414 | break; | |
10415 | default: | |
10416 | internal_error (__FILE__, __LINE__, | |
10417 | _("Invalid hardware watchpoint type.")); | |
10418 | } | |
10419 | ||
10420 | mention (b); | |
112e8700 | 10421 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10422 | Check the underlying instruction at PC for the memory\n\ |
10423 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10424 | uiout->text ("\n"); |
9c06b0b4 TJB |
10425 | |
10426 | /* More than one watchpoint may have been triggered. */ | |
10427 | return PRINT_UNKNOWN; | |
10428 | } | |
10429 | ||
10430 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10431 | masked hardware watchpoints. */ | |
10432 | ||
10433 | static void | |
10434 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10435 | struct ui_out *uiout) | |
10436 | { | |
3a5c3e22 PA |
10437 | struct watchpoint *w = (struct watchpoint *) b; |
10438 | ||
9c06b0b4 TJB |
10439 | /* Masked watchpoints have only one location. */ |
10440 | gdb_assert (b->loc && b->loc->next == NULL); | |
10441 | ||
112e8700 SM |
10442 | uiout->text ("\tmask "); |
10443 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10444 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10445 | } |
10446 | ||
10447 | /* Implement the "print_mention" breakpoint_ops method for | |
10448 | masked hardware watchpoints. */ | |
10449 | ||
10450 | static void | |
10451 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10452 | { | |
3a5c3e22 | 10453 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10454 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10455 | const char *tuple_name; |
9c06b0b4 TJB |
10456 | |
10457 | switch (b->type) | |
10458 | { | |
10459 | case bp_hardware_watchpoint: | |
112e8700 | 10460 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10461 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10462 | break; |
10463 | case bp_read_watchpoint: | |
112e8700 | 10464 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10465 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10466 | break; |
10467 | case bp_access_watchpoint: | |
112e8700 | 10468 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10469 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10470 | break; |
10471 | default: | |
10472 | internal_error (__FILE__, __LINE__, | |
10473 | _("Invalid hardware watchpoint type.")); | |
10474 | } | |
10475 | ||
46b9c129 | 10476 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10477 | uiout->field_int ("number", b->number); |
10478 | uiout->text (": "); | |
10479 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10480 | } |
10481 | ||
10482 | /* Implement the "print_recreate" breakpoint_ops method for | |
10483 | masked hardware watchpoints. */ | |
10484 | ||
10485 | static void | |
10486 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10487 | { | |
3a5c3e22 | 10488 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10489 | char tmp[40]; |
10490 | ||
10491 | switch (b->type) | |
10492 | { | |
10493 | case bp_hardware_watchpoint: | |
10494 | fprintf_unfiltered (fp, "watch"); | |
10495 | break; | |
10496 | case bp_read_watchpoint: | |
10497 | fprintf_unfiltered (fp, "rwatch"); | |
10498 | break; | |
10499 | case bp_access_watchpoint: | |
10500 | fprintf_unfiltered (fp, "awatch"); | |
10501 | break; | |
10502 | default: | |
10503 | internal_error (__FILE__, __LINE__, | |
10504 | _("Invalid hardware watchpoint type.")); | |
10505 | } | |
10506 | ||
3a5c3e22 PA |
10507 | sprintf_vma (tmp, w->hw_wp_mask); |
10508 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10509 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10510 | } |
10511 | ||
10512 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10513 | ||
2060206e | 10514 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10515 | |
10516 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10517 | ||
10518 | static int | |
10519 | is_masked_watchpoint (const struct breakpoint *b) | |
10520 | { | |
10521 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10522 | } | |
10523 | ||
53a5351d JM |
10524 | /* accessflag: hw_write: watch write, |
10525 | hw_read: watch read, | |
10526 | hw_access: watch access (read or write) */ | |
c906108c | 10527 | static void |
bbc13ae3 | 10528 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10529 | int just_location, int internal) |
c906108c | 10530 | { |
c1fc2657 | 10531 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10532 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
850645cf | 10533 | struct value *mark, *result; |
bb9d5f81 | 10534 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10535 | const char *exp_start = NULL; |
10536 | const char *exp_end = NULL; | |
10537 | const char *tok, *end_tok; | |
9c06b0b4 | 10538 | int toklen = -1; |
bbc13ae3 KS |
10539 | const char *cond_start = NULL; |
10540 | const char *cond_end = NULL; | |
c906108c | 10541 | enum bptype bp_type; |
37e4754d | 10542 | int thread = -1; |
0cf6dd15 | 10543 | int pc = 0; |
9c06b0b4 TJB |
10544 | /* Flag to indicate whether we are going to use masks for |
10545 | the hardware watchpoint. */ | |
10546 | int use_mask = 0; | |
10547 | CORE_ADDR mask = 0; | |
c906108c | 10548 | |
37e4754d LM |
10549 | /* Make sure that we actually have parameters to parse. */ |
10550 | if (arg != NULL && arg[0] != '\0') | |
10551 | { | |
bbc13ae3 KS |
10552 | const char *value_start; |
10553 | ||
10554 | exp_end = arg + strlen (arg); | |
37e4754d | 10555 | |
9c06b0b4 TJB |
10556 | /* Look for "parameter value" pairs at the end |
10557 | of the arguments string. */ | |
bbc13ae3 | 10558 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10559 | { |
10560 | /* Skip whitespace at the end of the argument list. */ | |
10561 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10562 | tok--; | |
10563 | ||
10564 | /* Find the beginning of the last token. | |
10565 | This is the value of the parameter. */ | |
10566 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10567 | tok--; | |
10568 | value_start = tok + 1; | |
10569 | ||
10570 | /* Skip whitespace. */ | |
10571 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10572 | tok--; | |
10573 | ||
10574 | end_tok = tok; | |
10575 | ||
10576 | /* Find the beginning of the second to last token. | |
10577 | This is the parameter itself. */ | |
10578 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10579 | tok--; | |
10580 | tok++; | |
10581 | toklen = end_tok - tok + 1; | |
10582 | ||
61012eef | 10583 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10584 | { |
5d5658a1 | 10585 | struct thread_info *thr; |
9c06b0b4 TJB |
10586 | /* At this point we've found a "thread" token, which means |
10587 | the user is trying to set a watchpoint that triggers | |
10588 | only in a specific thread. */ | |
5d5658a1 | 10589 | const char *endp; |
37e4754d | 10590 | |
9c06b0b4 TJB |
10591 | if (thread != -1) |
10592 | error(_("You can specify only one thread.")); | |
37e4754d | 10593 | |
9c06b0b4 | 10594 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10595 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10596 | |
5d5658a1 | 10597 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10598 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10599 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10600 | |
5d5658a1 | 10601 | thread = thr->global_num; |
9c06b0b4 | 10602 | } |
61012eef | 10603 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10604 | { |
10605 | /* We've found a "mask" token, which means the user wants to | |
10606 | create a hardware watchpoint that is going to have the mask | |
10607 | facility. */ | |
10608 | struct value *mask_value, *mark; | |
37e4754d | 10609 | |
9c06b0b4 TJB |
10610 | if (use_mask) |
10611 | error(_("You can specify only one mask.")); | |
37e4754d | 10612 | |
9c06b0b4 | 10613 | use_mask = just_location = 1; |
37e4754d | 10614 | |
9c06b0b4 TJB |
10615 | mark = value_mark (); |
10616 | mask_value = parse_to_comma_and_eval (&value_start); | |
10617 | mask = value_as_address (mask_value); | |
10618 | value_free_to_mark (mark); | |
10619 | } | |
10620 | else | |
10621 | /* We didn't recognize what we found. We should stop here. */ | |
10622 | break; | |
37e4754d | 10623 | |
9c06b0b4 TJB |
10624 | /* Truncate the string and get rid of the "parameter value" pair before |
10625 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10626 | exp_end = tok; |
9c06b0b4 | 10627 | } |
37e4754d | 10628 | } |
bbc13ae3 KS |
10629 | else |
10630 | exp_end = arg; | |
37e4754d | 10631 | |
bbc13ae3 KS |
10632 | /* Parse the rest of the arguments. From here on out, everything |
10633 | is in terms of a newly allocated string instead of the original | |
10634 | ARG. */ | |
aee1fcdf | 10635 | innermost_block.reset (); |
81b1e71c TT |
10636 | std::string expression (arg, exp_end - arg); |
10637 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10638 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10639 | exp_end = arg; |
fa8a61dc TT |
10640 | /* Remove trailing whitespace from the expression before saving it. |
10641 | This makes the eventual display of the expression string a bit | |
10642 | prettier. */ | |
10643 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10644 | --exp_end; | |
10645 | ||
65d79d4b | 10646 | /* Checking if the expression is not constant. */ |
4d01a485 | 10647 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10648 | { |
10649 | int len; | |
10650 | ||
10651 | len = exp_end - exp_start; | |
10652 | while (len > 0 && isspace (exp_start[len - 1])) | |
10653 | len--; | |
10654 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10655 | } | |
10656 | ||
aee1fcdf | 10657 | exp_valid_block = innermost_block.block (); |
c906108c | 10658 | mark = value_mark (); |
850645cf TT |
10659 | struct value *val_as_value = nullptr; |
10660 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10661 | just_location); | |
06a64a0b | 10662 | |
850645cf | 10663 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10664 | { |
850645cf TT |
10665 | saved_bitpos = value_bitpos (val_as_value); |
10666 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10667 | } |
10668 | ||
850645cf | 10669 | value_ref_ptr val; |
06a64a0b TT |
10670 | if (just_location) |
10671 | { | |
9c06b0b4 TJB |
10672 | int ret; |
10673 | ||
06a64a0b | 10674 | exp_valid_block = NULL; |
850645cf | 10675 | val = release_value (value_addr (result)); |
06a64a0b | 10676 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10677 | |
10678 | if (use_mask) | |
10679 | { | |
850645cf | 10680 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10681 | mask); |
10682 | if (ret == -1) | |
10683 | error (_("This target does not support masked watchpoints.")); | |
10684 | else if (ret == -2) | |
10685 | error (_("Invalid mask or memory region.")); | |
10686 | } | |
06a64a0b | 10687 | } |
850645cf TT |
10688 | else if (val_as_value != NULL) |
10689 | val = release_value (val_as_value); | |
c906108c | 10690 | |
f1735a53 TT |
10691 | tok = skip_spaces (arg); |
10692 | end_tok = skip_to_space (tok); | |
c906108c SS |
10693 | |
10694 | toklen = end_tok - tok; | |
10695 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10696 | { | |
aee1fcdf | 10697 | innermost_block.reset (); |
c906108c | 10698 | tok = cond_start = end_tok + 1; |
4d01a485 | 10699 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10700 | |
10701 | /* The watchpoint expression may not be local, but the condition | |
10702 | may still be. E.g.: `watch global if local > 0'. */ | |
aee1fcdf | 10703 | cond_exp_valid_block = innermost_block.block (); |
60e1c644 | 10704 | |
c906108c SS |
10705 | cond_end = tok; |
10706 | } | |
10707 | if (*tok) | |
8a3fe4f8 | 10708 | error (_("Junk at end of command.")); |
c906108c | 10709 | |
441d7c93 PA |
10710 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10711 | ||
10712 | /* Save this because create_internal_breakpoint below invalidates | |
10713 | 'wp_frame'. */ | |
10714 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10715 | |
10716 | /* If the expression is "local", then set up a "watchpoint scope" | |
10717 | breakpoint at the point where we've left the scope of the watchpoint | |
10718 | expression. Create the scope breakpoint before the watchpoint, so | |
10719 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10720 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10721 | { |
441d7c93 PA |
10722 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10723 | ||
10724 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10725 | { |
441d7c93 PA |
10726 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10727 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10728 | ||
edb3359d | 10729 | scope_breakpoint |
441d7c93 | 10730 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10731 | bp_watchpoint_scope, |
10732 | &momentary_breakpoint_ops); | |
d983da9c | 10733 | |
441d7c93 PA |
10734 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10735 | wp_frame = NULL; | |
10736 | ||
edb3359d | 10737 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10738 | |
edb3359d DJ |
10739 | /* Automatically delete the breakpoint when it hits. */ |
10740 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10741 | |
edb3359d | 10742 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10743 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10744 | |
edb3359d | 10745 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10746 | scope_breakpoint->loc->gdbarch = caller_arch; |
10747 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10748 | scope_breakpoint->loc->address |
a6d9a66e UW |
10749 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10750 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10751 | scope_breakpoint->type); |
10752 | } | |
d983da9c DJ |
10753 | } |
10754 | ||
e8369a73 AB |
10755 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10756 | watchpoints here even if hardware watchpoints are turned off, a call | |
10757 | to update_watchpoint later in this function will cause the type to | |
10758 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10759 | ||
10760 | if (accessflag == hw_read) | |
10761 | bp_type = bp_read_watchpoint; | |
10762 | else if (accessflag == hw_access) | |
10763 | bp_type = bp_access_watchpoint; | |
10764 | else | |
10765 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10766 | |
b270e6f9 | 10767 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10768 | |
348d480f | 10769 | if (use_mask) |
b270e6f9 | 10770 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10771 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10772 | else |
b270e6f9 | 10773 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10774 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10775 | w->thread = thread; |
10776 | w->disposition = disp_donttouch; | |
10777 | w->pspace = current_program_space; | |
b22e99fd | 10778 | w->exp = std::move (exp); |
3a5c3e22 PA |
10779 | w->exp_valid_block = exp_valid_block; |
10780 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10781 | if (just_location) |
10782 | { | |
850645cf TT |
10783 | struct type *t = value_type (val.get ()); |
10784 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10785 | |
43cc5389 TT |
10786 | w->exp_string_reparse |
10787 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10788 | |
3a5c3e22 | 10789 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10790 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10791 | } |
10792 | else | |
3a5c3e22 | 10793 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10794 | |
10795 | if (use_mask) | |
10796 | { | |
3a5c3e22 | 10797 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10798 | } |
10799 | else | |
10800 | { | |
3a5c3e22 | 10801 | w->val = val; |
bb9d5f81 PP |
10802 | w->val_bitpos = saved_bitpos; |
10803 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10804 | w->val_valid = 1; |
9c06b0b4 | 10805 | } |
77b06cd7 | 10806 | |
c906108c | 10807 | if (cond_start) |
c1fc2657 | 10808 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10809 | else |
c1fc2657 | 10810 | w->cond_string = 0; |
c5aa993b | 10811 | |
441d7c93 | 10812 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10813 | { |
441d7c93 | 10814 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10815 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10816 | } |
c906108c | 10817 | else |
f6bc2008 | 10818 | { |
3a5c3e22 PA |
10819 | w->watchpoint_frame = null_frame_id; |
10820 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10821 | } |
c906108c | 10822 | |
d983da9c | 10823 | if (scope_breakpoint != NULL) |
c906108c | 10824 | { |
d983da9c DJ |
10825 | /* The scope breakpoint is related to the watchpoint. We will |
10826 | need to act on them together. */ | |
c1fc2657 | 10827 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10828 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10829 | } |
d983da9c | 10830 | |
06a64a0b TT |
10831 | if (!just_location) |
10832 | value_free_to_mark (mark); | |
2d134ed3 | 10833 | |
b270e6f9 TT |
10834 | /* Finally update the new watchpoint. This creates the locations |
10835 | that should be inserted. */ | |
10836 | update_watchpoint (w.get (), 1); | |
a9634178 | 10837 | |
b270e6f9 | 10838 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10839 | } |
10840 | ||
e09342b5 | 10841 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10842 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10843 | |
c906108c | 10844 | static int |
a6535de1 | 10845 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10846 | { |
10847 | int found_memory_cnt = 0; | |
10848 | ||
10849 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10850 | if (!can_use_hw_watchpoints) |
c906108c | 10851 | return 0; |
c5aa993b | 10852 | |
a6535de1 TT |
10853 | gdb_assert (!vals.empty ()); |
10854 | struct value *head = vals[0].get (); | |
10855 | ||
5c44784c JM |
10856 | /* Make sure that the value of the expression depends only upon |
10857 | memory contents, and values computed from them within GDB. If we | |
10858 | find any register references or function calls, we can't use a | |
10859 | hardware watchpoint. | |
10860 | ||
10861 | The idea here is that evaluating an expression generates a series | |
10862 | of values, one holding the value of every subexpression. (The | |
10863 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10864 | a*b+c.) GDB's values hold almost enough information to establish | |
10865 | the criteria given above --- they identify memory lvalues, | |
10866 | register lvalues, computed values, etcetera. So we can evaluate | |
10867 | the expression, and then scan the chain of values that leaves | |
10868 | behind to decide whether we can detect any possible change to the | |
10869 | expression's final value using only hardware watchpoints. | |
10870 | ||
10871 | However, I don't think that the values returned by inferior | |
10872 | function calls are special in any way. So this function may not | |
10873 | notice that an expression involving an inferior function call | |
10874 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10875 | for (const value_ref_ptr &iter : vals) |
c906108c | 10876 | { |
a6535de1 TT |
10877 | struct value *v = iter.get (); |
10878 | ||
5c44784c | 10879 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10880 | { |
8464be76 DJ |
10881 | if (v != head && value_lazy (v)) |
10882 | /* A lazy memory lvalue in the chain is one that GDB never | |
10883 | needed to fetch; we either just used its address (e.g., | |
10884 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10885 | in `a,b'). This doesn't apply to HEAD; if that is | |
10886 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10887 | ; |
53a5351d | 10888 | else |
5c44784c JM |
10889 | { |
10890 | /* Ahh, memory we actually used! Check if we can cover | |
10891 | it with hardware watchpoints. */ | |
df407dfe | 10892 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10893 | |
10894 | /* We only watch structs and arrays if user asked for it | |
10895 | explicitly, never if they just happen to appear in a | |
10896 | middle of some value chain. */ | |
10897 | if (v == head | |
10898 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10899 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10900 | { | |
42ae5230 | 10901 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10902 | int len; |
10903 | int num_regs; | |
10904 | ||
a9634178 | 10905 | len = (target_exact_watchpoints |
e09342b5 TJB |
10906 | && is_scalar_type_recursive (vtype))? |
10907 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10908 | |
e09342b5 TJB |
10909 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10910 | if (!num_regs) | |
2e70b7b9 MS |
10911 | return 0; |
10912 | else | |
e09342b5 | 10913 | found_memory_cnt += num_regs; |
2e70b7b9 | 10914 | } |
5c44784c | 10915 | } |
c5aa993b | 10916 | } |
5086187c AC |
10917 | else if (VALUE_LVAL (v) != not_lval |
10918 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10919 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10920 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10921 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10922 | } |
10923 | ||
10924 | /* The expression itself looks suitable for using a hardware | |
10925 | watchpoint, but give the target machine a chance to reject it. */ | |
10926 | return found_memory_cnt; | |
10927 | } | |
10928 | ||
8b93c638 | 10929 | void |
f2fc3015 | 10930 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10931 | { |
84f4c1fe | 10932 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10933 | } |
10934 | ||
06a64a0b TT |
10935 | /* A helper function that looks for the "-location" argument and then |
10936 | calls watch_command_1. */ | |
10937 | ||
10938 | static void | |
0b39b52e | 10939 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10940 | { |
10941 | int just_location = 0; | |
10942 | ||
10943 | if (arg | |
10944 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10945 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10946 | { | |
e9cafbcc | 10947 | arg = skip_spaces (arg); |
06a64a0b TT |
10948 | just_location = 1; |
10949 | } | |
10950 | ||
84f4c1fe | 10951 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10952 | } |
8926118c | 10953 | |
c5aa993b | 10954 | static void |
0b39b52e | 10955 | watch_command (const char *arg, int from_tty) |
c906108c | 10956 | { |
06a64a0b | 10957 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10958 | } |
10959 | ||
8b93c638 | 10960 | void |
f2fc3015 | 10961 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10962 | { |
84f4c1fe | 10963 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10964 | } |
8926118c | 10965 | |
c5aa993b | 10966 | static void |
0b39b52e | 10967 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10968 | { |
06a64a0b | 10969 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10970 | } |
10971 | ||
8b93c638 | 10972 | void |
f2fc3015 | 10973 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10974 | { |
84f4c1fe | 10975 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10976 | } |
8926118c | 10977 | |
c5aa993b | 10978 | static void |
0b39b52e | 10979 | awatch_command (const char *arg, int from_tty) |
c906108c | 10980 | { |
06a64a0b | 10981 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10982 | } |
c906108c | 10983 | \f |
c5aa993b | 10984 | |
cfc31633 PA |
10985 | /* Data for the FSM that manages the until(location)/advance commands |
10986 | in infcmd.c. Here because it uses the mechanisms of | |
10987 | breakpoints. */ | |
c906108c | 10988 | |
cfc31633 | 10989 | struct until_break_fsm |
bfec99b2 | 10990 | { |
cfc31633 PA |
10991 | /* The base class. */ |
10992 | struct thread_fsm thread_fsm; | |
10993 | ||
10994 | /* The thread that as current when the command was executed. */ | |
10995 | int thread; | |
10996 | ||
10997 | /* The breakpoint set at the destination location. */ | |
10998 | struct breakpoint *location_breakpoint; | |
10999 | ||
11000 | /* Breakpoint set at the return address in the caller frame. May be | |
11001 | NULL. */ | |
11002 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11003 | }; |
11004 | ||
8980e177 PA |
11005 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11006 | struct thread_info *thread); | |
11007 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11008 | struct thread_info *thread); | |
cfc31633 PA |
11009 | static enum async_reply_reason |
11010 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11011 | ||
11012 | /* until_break_fsm's vtable. */ | |
11013 | ||
11014 | static struct thread_fsm_ops until_break_fsm_ops = | |
11015 | { | |
11016 | NULL, /* dtor */ | |
11017 | until_break_fsm_clean_up, | |
11018 | until_break_fsm_should_stop, | |
11019 | NULL, /* return_value */ | |
11020 | until_break_fsm_async_reply_reason, | |
11021 | }; | |
11022 | ||
11023 | /* Allocate a new until_break_command_fsm. */ | |
11024 | ||
11025 | static struct until_break_fsm * | |
8980e177 | 11026 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11027 | breakpoint_up &&location_breakpoint, |
11028 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11029 | { |
11030 | struct until_break_fsm *sm; | |
11031 | ||
11032 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11033 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11034 | |
11035 | sm->thread = thread; | |
454dafbd TT |
11036 | sm->location_breakpoint = location_breakpoint.release (); |
11037 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11038 | |
11039 | return sm; | |
11040 | } | |
11041 | ||
11042 | /* Implementation of the 'should_stop' FSM method for the | |
11043 | until(location)/advance commands. */ | |
11044 | ||
11045 | static int | |
8980e177 PA |
11046 | until_break_fsm_should_stop (struct thread_fsm *self, |
11047 | struct thread_info *tp) | |
cfc31633 PA |
11048 | { |
11049 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11050 | |
11051 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11052 | sm->location_breakpoint) != NULL | |
11053 | || (sm->caller_breakpoint != NULL | |
11054 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11055 | sm->caller_breakpoint) != NULL)) | |
11056 | thread_fsm_set_finished (self); | |
11057 | ||
11058 | return 1; | |
11059 | } | |
11060 | ||
11061 | /* Implementation of the 'clean_up' FSM method for the | |
11062 | until(location)/advance commands. */ | |
11063 | ||
c2c6d25f | 11064 | static void |
8980e177 PA |
11065 | until_break_fsm_clean_up (struct thread_fsm *self, |
11066 | struct thread_info *thread) | |
43ff13b4 | 11067 | { |
cfc31633 | 11068 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11069 | |
cfc31633 PA |
11070 | /* Clean up our temporary breakpoints. */ |
11071 | if (sm->location_breakpoint != NULL) | |
11072 | { | |
11073 | delete_breakpoint (sm->location_breakpoint); | |
11074 | sm->location_breakpoint = NULL; | |
11075 | } | |
11076 | if (sm->caller_breakpoint != NULL) | |
11077 | { | |
11078 | delete_breakpoint (sm->caller_breakpoint); | |
11079 | sm->caller_breakpoint = NULL; | |
11080 | } | |
11081 | delete_longjmp_breakpoint (sm->thread); | |
11082 | } | |
11083 | ||
11084 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11085 | until(location)/advance commands. */ | |
11086 | ||
11087 | static enum async_reply_reason | |
11088 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11089 | { | |
11090 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11091 | } |
11092 | ||
c906108c | 11093 | void |
f2fc3015 | 11094 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11095 | { |
8556afb4 PA |
11096 | struct frame_info *frame; |
11097 | struct gdbarch *frame_gdbarch; | |
11098 | struct frame_id stack_frame_id; | |
11099 | struct frame_id caller_frame_id; | |
ffc2605c | 11100 | struct cleanup *old_chain; |
186c406b TT |
11101 | int thread; |
11102 | struct thread_info *tp; | |
cfc31633 | 11103 | struct until_break_fsm *sm; |
c906108c | 11104 | |
70509625 | 11105 | clear_proceed_status (0); |
c906108c SS |
11106 | |
11107 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11108 | this function. */ |
c5aa993b | 11109 | |
ffc2605c | 11110 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11111 | |
6c5b2ebe PA |
11112 | std::vector<symtab_and_line> sals |
11113 | = (last_displayed_sal_is_valid () | |
11114 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11115 | get_last_displayed_symtab (), | |
11116 | get_last_displayed_line ()) | |
11117 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11118 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11119 | |
6c5b2ebe | 11120 | if (sals.size () != 1) |
8a3fe4f8 | 11121 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11122 | |
6c5b2ebe | 11123 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11124 | |
c906108c | 11125 | if (*arg) |
8a3fe4f8 | 11126 | error (_("Junk at end of arguments.")); |
c5aa993b | 11127 | |
c906108c | 11128 | resolve_sal_pc (&sal); |
c5aa993b | 11129 | |
186c406b | 11130 | tp = inferior_thread (); |
5d5658a1 | 11131 | thread = tp->global_num; |
186c406b | 11132 | |
883bc8d1 PA |
11133 | old_chain = make_cleanup (null_cleanup, NULL); |
11134 | ||
8556afb4 PA |
11135 | /* Note linespec handling above invalidates the frame chain. |
11136 | Installing a breakpoint also invalidates the frame chain (as it | |
11137 | may need to switch threads), so do any frame handling before | |
11138 | that. */ | |
11139 | ||
11140 | frame = get_selected_frame (NULL); | |
11141 | frame_gdbarch = get_frame_arch (frame); | |
11142 | stack_frame_id = get_stack_frame_id (frame); | |
11143 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11144 | |
ae66c1fc EZ |
11145 | /* Keep within the current frame, or in frames called by the current |
11146 | one. */ | |
edb3359d | 11147 | |
454dafbd | 11148 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11149 | if (frame_id_p (caller_frame_id)) |
c906108c | 11150 | { |
883bc8d1 | 11151 | struct symtab_and_line sal2; |
cfc31633 | 11152 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11153 | |
11154 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11155 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11156 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11157 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11158 | sal2, | |
11159 | caller_frame_id, | |
11160 | bp_until); | |
186c406b | 11161 | |
883bc8d1 | 11162 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11163 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11164 | } |
c5aa993b | 11165 | |
c70a6932 JK |
11166 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11167 | frame = NULL; | |
11168 | ||
454dafbd | 11169 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11170 | if (anywhere) |
11171 | /* If the user told us to continue until a specified location, | |
11172 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11173 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11174 | null_frame_id, bp_until); | |
883bc8d1 PA |
11175 | else |
11176 | /* Otherwise, specify the selected frame, because we want to stop | |
11177 | only at the very same frame. */ | |
cfc31633 PA |
11178 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11179 | stack_frame_id, bp_until); | |
883bc8d1 | 11180 | |
8980e177 | 11181 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11182 | std::move (location_breakpoint), |
11183 | std::move (caller_breakpoint)); | |
cfc31633 | 11184 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11185 | |
cfc31633 | 11186 | discard_cleanups (old_chain); |
f107f563 | 11187 | |
cfc31633 | 11188 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11189 | } |
ae66c1fc | 11190 | |
c906108c SS |
11191 | /* This function attempts to parse an optional "if <cond>" clause |
11192 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11193 | |
c906108c SS |
11194 | Else, it returns a pointer to the condition string. (It does not |
11195 | attempt to evaluate the string against a particular block.) And, | |
11196 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11197 | if clause in the arg string. */ |
53a5351d | 11198 | |
63160a43 PA |
11199 | const char * |
11200 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11201 | { |
63160a43 | 11202 | const char *cond_string; |
c5aa993b JM |
11203 | |
11204 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11205 | return NULL; |
c5aa993b | 11206 | |
4a64f543 | 11207 | /* Skip the "if" keyword. */ |
c906108c | 11208 | (*arg) += 2; |
c5aa993b | 11209 | |
c906108c | 11210 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11211 | condition string. */ |
f1735a53 | 11212 | *arg = skip_spaces (*arg); |
c906108c | 11213 | cond_string = *arg; |
c5aa993b | 11214 | |
4a64f543 MS |
11215 | /* Assume that the condition occupies the remainder of the arg |
11216 | string. */ | |
c906108c | 11217 | (*arg) += strlen (cond_string); |
c5aa993b | 11218 | |
c906108c SS |
11219 | return cond_string; |
11220 | } | |
c5aa993b | 11221 | |
c906108c SS |
11222 | /* Commands to deal with catching events, such as signals, exceptions, |
11223 | process start/exit, etc. */ | |
c5aa993b JM |
11224 | |
11225 | typedef enum | |
11226 | { | |
44feb3ce TT |
11227 | catch_fork_temporary, catch_vfork_temporary, |
11228 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11229 | } |
11230 | catch_fork_kind; | |
11231 | ||
c906108c | 11232 | static void |
eb4c3f4a | 11233 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11234 | struct cmd_list_element *command) |
c906108c | 11235 | { |
a6d9a66e | 11236 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11237 | const char *cond_string = NULL; |
44feb3ce TT |
11238 | catch_fork_kind fork_kind; |
11239 | int tempflag; | |
11240 | ||
11241 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11242 | tempflag = (fork_kind == catch_fork_temporary | |
11243 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11244 | |
44feb3ce TT |
11245 | if (!arg) |
11246 | arg = ""; | |
f1735a53 | 11247 | arg = skip_spaces (arg); |
c5aa993b | 11248 | |
c906108c | 11249 | /* The allowed syntax is: |
c5aa993b JM |
11250 | catch [v]fork |
11251 | catch [v]fork if <cond> | |
11252 | ||
4a64f543 | 11253 | First, check if there's an if clause. */ |
c906108c | 11254 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11255 | |
c906108c | 11256 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11257 | error (_("Junk at end of arguments.")); |
c5aa993b | 11258 | |
c906108c | 11259 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11260 | and enable reporting of such events. */ |
c5aa993b JM |
11261 | switch (fork_kind) |
11262 | { | |
44feb3ce TT |
11263 | case catch_fork_temporary: |
11264 | case catch_fork_permanent: | |
a6d9a66e | 11265 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11266 | &catch_fork_breakpoint_ops); |
c906108c | 11267 | break; |
44feb3ce TT |
11268 | case catch_vfork_temporary: |
11269 | case catch_vfork_permanent: | |
a6d9a66e | 11270 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11271 | &catch_vfork_breakpoint_ops); |
c906108c | 11272 | break; |
c5aa993b | 11273 | default: |
8a3fe4f8 | 11274 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11275 | break; |
c5aa993b | 11276 | } |
c906108c SS |
11277 | } |
11278 | ||
11279 | static void | |
eb4c3f4a | 11280 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11281 | struct cmd_list_element *command) |
c906108c | 11282 | { |
a6d9a66e | 11283 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11284 | int tempflag; |
63160a43 | 11285 | const char *cond_string = NULL; |
c906108c | 11286 | |
44feb3ce TT |
11287 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11288 | ||
11289 | if (!arg) | |
11290 | arg = ""; | |
f1735a53 | 11291 | arg = skip_spaces (arg); |
c906108c SS |
11292 | |
11293 | /* The allowed syntax is: | |
c5aa993b JM |
11294 | catch exec |
11295 | catch exec if <cond> | |
c906108c | 11296 | |
4a64f543 | 11297 | First, check if there's an if clause. */ |
c906108c SS |
11298 | cond_string = ep_parse_optional_if_clause (&arg); |
11299 | ||
11300 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11301 | error (_("Junk at end of arguments.")); |
c906108c | 11302 | |
b270e6f9 TT |
11303 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11304 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11305 | &catch_exec_breakpoint_ops); |
11306 | c->exec_pathname = NULL; | |
11307 | ||
b270e6f9 | 11308 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11309 | } |
c5aa993b | 11310 | |
9ac4176b | 11311 | void |
28010a5d PA |
11312 | init_ada_exception_breakpoint (struct breakpoint *b, |
11313 | struct gdbarch *gdbarch, | |
11314 | struct symtab_and_line sal, | |
f2fc3015 | 11315 | const char *addr_string, |
c0a91b2b | 11316 | const struct breakpoint_ops *ops, |
28010a5d | 11317 | int tempflag, |
349774ef | 11318 | int enabled, |
28010a5d | 11319 | int from_tty) |
f7f9143b | 11320 | { |
f7f9143b JB |
11321 | if (from_tty) |
11322 | { | |
5af949e3 UW |
11323 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11324 | if (!loc_gdbarch) | |
11325 | loc_gdbarch = gdbarch; | |
11326 | ||
6c95b8df PA |
11327 | describe_other_breakpoints (loc_gdbarch, |
11328 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11329 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11330 | version for exception catchpoints, because two catchpoints | |
11331 | used for different exception names will use the same address. | |
11332 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11333 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11334 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11335 | the user what type of catchpoint it is. The above is good |
11336 | enough for now, though. */ | |
11337 | } | |
11338 | ||
28010a5d | 11339 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11340 | |
349774ef | 11341 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11342 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11343 | b->location = string_to_event_location (&addr_string, |
11344 | language_def (language_ada)); | |
f7f9143b | 11345 | b->language = language_ada; |
f7f9143b JB |
11346 | } |
11347 | ||
c906108c | 11348 | static void |
981a3fb3 | 11349 | catch_command (const char *arg, int from_tty) |
c906108c | 11350 | { |
44feb3ce | 11351 | error (_("Catch requires an event name.")); |
c906108c SS |
11352 | } |
11353 | \f | |
11354 | ||
11355 | static void | |
981a3fb3 | 11356 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11357 | { |
44feb3ce | 11358 | error (_("Catch requires an event name.")); |
c906108c SS |
11359 | } |
11360 | ||
81b1e71c | 11361 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11362 | |
11363 | static int | |
81b1e71c | 11364 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11365 | { |
81b1e71c TT |
11366 | uintptr_t ua = (uintptr_t) a; |
11367 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11368 | |
81b1e71c | 11369 | if (a->number < b->number) |
8a2c437b | 11370 | return -1; |
81b1e71c | 11371 | else if (a->number > b->number) |
8a2c437b TT |
11372 | return 1; |
11373 | ||
11374 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11375 | the number 0. */ | |
11376 | if (ua < ub) | |
11377 | return -1; | |
94b0e70d | 11378 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11379 | } |
11380 | ||
80f8a6eb | 11381 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11382 | |
11383 | static void | |
0b39b52e | 11384 | clear_command (const char *arg, int from_tty) |
c906108c | 11385 | { |
81b1e71c | 11386 | struct breakpoint *b; |
c906108c | 11387 | int default_match; |
c906108c | 11388 | |
6c5b2ebe PA |
11389 | std::vector<symtab_and_line> decoded_sals; |
11390 | symtab_and_line last_sal; | |
11391 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11392 | if (arg) |
11393 | { | |
6c5b2ebe PA |
11394 | decoded_sals |
11395 | = decode_line_with_current_source (arg, | |
11396 | (DECODE_LINE_FUNFIRSTLINE | |
11397 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11398 | default_match = 0; |
6c5b2ebe | 11399 | sals = decoded_sals; |
c906108c SS |
11400 | } |
11401 | else | |
11402 | { | |
1bfeeb0f JL |
11403 | /* Set sal's line, symtab, pc, and pspace to the values |
11404 | corresponding to the last call to print_frame_info. If the | |
11405 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11406 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11407 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11408 | error (_("No source file specified.")); |
c906108c | 11409 | |
c906108c | 11410 | default_match = 1; |
6c5b2ebe | 11411 | sals = last_sal; |
c906108c SS |
11412 | } |
11413 | ||
4a64f543 MS |
11414 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11415 | seems, because all existing breakpoints typically have both | |
11416 | file/line and pc set. So, if clear is given file/line, we can | |
11417 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11418 | |
11419 | We only support clearing given the address explicitly | |
11420 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11421 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11422 | due to optimization, all in one block. |
4a64f543 MS |
11423 | |
11424 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11425 | PC corresponding to the same file:line, the breakpoint won't |
11426 | be cleared. We probably can still clear the breakpoint, but | |
11427 | since the other PC value is never presented to user, user | |
11428 | can only find it by guessing, and it does not seem important | |
11429 | to support that. */ | |
11430 | ||
4a64f543 MS |
11431 | /* For each line spec given, delete bps which correspond to it. Do |
11432 | it in two passes, solely to preserve the current behavior that | |
11433 | from_tty is forced true if we delete more than one | |
11434 | breakpoint. */ | |
c906108c | 11435 | |
81b1e71c | 11436 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11437 | for (const auto &sal : sals) |
c906108c | 11438 | { |
05cba821 JK |
11439 | const char *sal_fullname; |
11440 | ||
c906108c | 11441 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11442 | If line given (pc == 0), clear all bpts on specified line. |
11443 | If defaulting, clear all bpts on default line | |
c906108c | 11444 | or at default pc. |
c5aa993b JM |
11445 | |
11446 | defaulting sal.pc != 0 tests to do | |
11447 | ||
11448 | 0 1 pc | |
11449 | 1 1 pc _and_ line | |
11450 | 0 0 line | |
11451 | 1 0 <can't happen> */ | |
c906108c | 11452 | |
05cba821 JK |
11453 | sal_fullname = (sal.symtab == NULL |
11454 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11455 | |
4a64f543 | 11456 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11457 | ALL_BREAKPOINTS (b) |
c5aa993b | 11458 | { |
0d381245 | 11459 | int match = 0; |
4a64f543 | 11460 | /* Are we going to delete b? */ |
cc60f2e3 | 11461 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11462 | { |
11463 | struct bp_location *loc = b->loc; | |
11464 | for (; loc; loc = loc->next) | |
11465 | { | |
f8eba3c6 TT |
11466 | /* If the user specified file:line, don't allow a PC |
11467 | match. This matches historical gdb behavior. */ | |
11468 | int pc_match = (!sal.explicit_line | |
11469 | && sal.pc | |
11470 | && (loc->pspace == sal.pspace) | |
11471 | && (loc->address == sal.pc) | |
11472 | && (!section_is_overlay (loc->section) | |
11473 | || loc->section == sal.section)); | |
4aac40c8 TT |
11474 | int line_match = 0; |
11475 | ||
11476 | if ((default_match || sal.explicit_line) | |
2f202fde | 11477 | && loc->symtab != NULL |
05cba821 | 11478 | && sal_fullname != NULL |
4aac40c8 | 11479 | && sal.pspace == loc->pspace |
05cba821 JK |
11480 | && loc->line_number == sal.line |
11481 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11482 | sal_fullname) == 0) | |
11483 | line_match = 1; | |
4aac40c8 | 11484 | |
0d381245 VP |
11485 | if (pc_match || line_match) |
11486 | { | |
11487 | match = 1; | |
11488 | break; | |
11489 | } | |
11490 | } | |
11491 | } | |
11492 | ||
11493 | if (match) | |
81b1e71c | 11494 | found.push_back (b); |
c906108c | 11495 | } |
80f8a6eb | 11496 | } |
8a2c437b | 11497 | |
80f8a6eb | 11498 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11499 | if (found.empty ()) |
80f8a6eb MS |
11500 | { |
11501 | if (arg) | |
8a3fe4f8 | 11502 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11503 | else |
8a3fe4f8 | 11504 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11505 | } |
c906108c | 11506 | |
8a2c437b | 11507 | /* Remove duplicates from the vec. */ |
81b1e71c TT |
11508 | std::sort (found.begin (), found.end (), |
11509 | [] (const breakpoint *a, const breakpoint *b) | |
11510 | { | |
11511 | return compare_breakpoints (a, b) < 0; | |
11512 | }); | |
11513 | found.erase (std::unique (found.begin (), found.end (), | |
11514 | [] (const breakpoint *a, const breakpoint *b) | |
11515 | { | |
11516 | return compare_breakpoints (a, b) == 0; | |
11517 | }), | |
11518 | found.end ()); | |
8a2c437b | 11519 | |
81b1e71c | 11520 | if (found.size () > 1) |
4a64f543 | 11521 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11522 | if (from_tty) |
a3f17187 | 11523 | { |
81b1e71c | 11524 | if (found.size () == 1) |
a3f17187 AC |
11525 | printf_unfiltered (_("Deleted breakpoint ")); |
11526 | else | |
11527 | printf_unfiltered (_("Deleted breakpoints ")); | |
11528 | } | |
d6e956e5 | 11529 | |
81b1e71c | 11530 | for (breakpoint *iter : found) |
80f8a6eb | 11531 | { |
c5aa993b | 11532 | if (from_tty) |
81b1e71c TT |
11533 | printf_unfiltered ("%d ", iter->number); |
11534 | delete_breakpoint (iter); | |
c906108c | 11535 | } |
80f8a6eb MS |
11536 | if (from_tty) |
11537 | putchar_unfiltered ('\n'); | |
c906108c SS |
11538 | } |
11539 | \f | |
11540 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11541 | all breakpoints that are marked for deletion, whether hit or not. | |
11542 | This is called after any breakpoint is hit, or after errors. */ | |
11543 | ||
11544 | void | |
fba45db2 | 11545 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11546 | { |
35df4500 | 11547 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11548 | |
11549 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11550 | if (bs->breakpoint_at |
11551 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11552 | && bs->stop) |
f431efe5 | 11553 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11554 | |
35df4500 | 11555 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11556 | { |
b5de0fa7 | 11557 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11558 | delete_breakpoint (b); |
11559 | } | |
c906108c SS |
11560 | } |
11561 | ||
4a64f543 MS |
11562 | /* A comparison function for bp_location AP and BP being interfaced to |
11563 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11564 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11565 | secondarily by ordering first permanent elements and |
4a64f543 | 11566 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11567 | qsort being an unstable algorithm. */ |
876fa593 JK |
11568 | |
11569 | static int | |
f5336ca5 | 11570 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11571 | { |
9a3c8263 SM |
11572 | const struct bp_location *a = *(const struct bp_location **) ap; |
11573 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11574 | |
11575 | if (a->address != b->address) | |
11576 | return (a->address > b->address) - (a->address < b->address); | |
11577 | ||
dea2aa5f LM |
11578 | /* Sort locations at the same address by their pspace number, keeping |
11579 | locations of the same inferior (in a multi-inferior environment) | |
11580 | grouped. */ | |
11581 | ||
11582 | if (a->pspace->num != b->pspace->num) | |
11583 | return ((a->pspace->num > b->pspace->num) | |
11584 | - (a->pspace->num < b->pspace->num)); | |
11585 | ||
876fa593 | 11586 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11587 | if (a->permanent != b->permanent) |
11588 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11589 | |
c56a97f9 JK |
11590 | /* Make the internal GDB representation stable across GDB runs |
11591 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11592 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11593 | |
11594 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11595 | return ((a->owner->number > b->owner->number) |
11596 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11597 | |
11598 | return (a > b) - (a < b); | |
11599 | } | |
11600 | ||
f5336ca5 PA |
11601 | /* Set bp_locations_placed_address_before_address_max and |
11602 | bp_locations_shadow_len_after_address_max according to the current | |
11603 | content of the bp_locations array. */ | |
f7545552 TT |
11604 | |
11605 | static void | |
f5336ca5 | 11606 | bp_locations_target_extensions_update (void) |
f7545552 | 11607 | { |
876fa593 JK |
11608 | struct bp_location *bl, **blp_tmp; |
11609 | ||
f5336ca5 PA |
11610 | bp_locations_placed_address_before_address_max = 0; |
11611 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11612 | |
11613 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11614 | { | |
11615 | CORE_ADDR start, end, addr; | |
11616 | ||
11617 | if (!bp_location_has_shadow (bl)) | |
11618 | continue; | |
11619 | ||
11620 | start = bl->target_info.placed_address; | |
11621 | end = start + bl->target_info.shadow_len; | |
11622 | ||
11623 | gdb_assert (bl->address >= start); | |
11624 | addr = bl->address - start; | |
f5336ca5 PA |
11625 | if (addr > bp_locations_placed_address_before_address_max) |
11626 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11627 | |
11628 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11629 | ||
11630 | gdb_assert (bl->address < end); | |
11631 | addr = end - bl->address; | |
f5336ca5 PA |
11632 | if (addr > bp_locations_shadow_len_after_address_max) |
11633 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11634 | } |
f7545552 TT |
11635 | } |
11636 | ||
1e4d1764 YQ |
11637 | /* Download tracepoint locations if they haven't been. */ |
11638 | ||
11639 | static void | |
11640 | download_tracepoint_locations (void) | |
11641 | { | |
7ed2c994 | 11642 | struct breakpoint *b; |
dd2e65cc | 11643 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11644 | |
5ed8105e | 11645 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11646 | |
7ed2c994 | 11647 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11648 | { |
7ed2c994 | 11649 | struct bp_location *bl; |
1e4d1764 | 11650 | struct tracepoint *t; |
f2a8bc8a | 11651 | int bp_location_downloaded = 0; |
1e4d1764 | 11652 | |
7ed2c994 | 11653 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11654 | ? !may_insert_fast_tracepoints |
11655 | : !may_insert_tracepoints)) | |
11656 | continue; | |
11657 | ||
dd2e65cc YQ |
11658 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11659 | { | |
11660 | if (target_can_download_tracepoint ()) | |
11661 | can_download_tracepoint = TRIBOOL_TRUE; | |
11662 | else | |
11663 | can_download_tracepoint = TRIBOOL_FALSE; | |
11664 | } | |
11665 | ||
11666 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11667 | break; | |
11668 | ||
7ed2c994 YQ |
11669 | for (bl = b->loc; bl; bl = bl->next) |
11670 | { | |
11671 | /* In tracepoint, locations are _never_ duplicated, so | |
11672 | should_be_inserted is equivalent to | |
11673 | unduplicated_should_be_inserted. */ | |
11674 | if (!should_be_inserted (bl) || bl->inserted) | |
11675 | continue; | |
1e4d1764 | 11676 | |
7ed2c994 | 11677 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11678 | |
7ed2c994 | 11679 | target_download_tracepoint (bl); |
1e4d1764 | 11680 | |
7ed2c994 | 11681 | bl->inserted = 1; |
f2a8bc8a | 11682 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11683 | } |
11684 | t = (struct tracepoint *) b; | |
11685 | t->number_on_target = b->number; | |
f2a8bc8a | 11686 | if (bp_location_downloaded) |
76727919 | 11687 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11688 | } |
1e4d1764 YQ |
11689 | } |
11690 | ||
934709f0 PW |
11691 | /* Swap the insertion/duplication state between two locations. */ |
11692 | ||
11693 | static void | |
11694 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11695 | { | |
11696 | const int left_inserted = left->inserted; | |
11697 | const int left_duplicate = left->duplicate; | |
b775012e | 11698 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11699 | const struct bp_target_info left_target_info = left->target_info; |
11700 | ||
1e4d1764 YQ |
11701 | /* Locations of tracepoints can never be duplicated. */ |
11702 | if (is_tracepoint (left->owner)) | |
11703 | gdb_assert (!left->duplicate); | |
11704 | if (is_tracepoint (right->owner)) | |
11705 | gdb_assert (!right->duplicate); | |
11706 | ||
934709f0 PW |
11707 | left->inserted = right->inserted; |
11708 | left->duplicate = right->duplicate; | |
b775012e | 11709 | left->needs_update = right->needs_update; |
934709f0 PW |
11710 | left->target_info = right->target_info; |
11711 | right->inserted = left_inserted; | |
11712 | right->duplicate = left_duplicate; | |
b775012e | 11713 | right->needs_update = left_needs_update; |
934709f0 PW |
11714 | right->target_info = left_target_info; |
11715 | } | |
11716 | ||
b775012e LM |
11717 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11718 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11719 | conditions on the target's side. Such conditions need to be updated on | |
11720 | the target. */ | |
11721 | ||
11722 | static void | |
11723 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11724 | { | |
11725 | struct bp_location **locp = NULL, **loc2p; | |
11726 | struct bp_location *loc; | |
11727 | CORE_ADDR address = 0; | |
11728 | int pspace_num; | |
11729 | ||
11730 | address = bl->address; | |
11731 | pspace_num = bl->pspace->num; | |
11732 | ||
11733 | /* This is only meaningful if the target is | |
11734 | evaluating conditions and if the user has | |
11735 | opted for condition evaluation on the target's | |
11736 | side. */ | |
11737 | if (gdb_evaluates_breakpoint_condition_p () | |
11738 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11739 | return; | |
11740 | ||
11741 | /* Flag all breakpoint locations with this address and | |
11742 | the same program space as the location | |
11743 | as "its condition has changed". We need to | |
11744 | update the conditions on the target's side. */ | |
11745 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11746 | { | |
11747 | loc = *loc2p; | |
11748 | ||
11749 | if (!is_breakpoint (loc->owner) | |
11750 | || pspace_num != loc->pspace->num) | |
11751 | continue; | |
11752 | ||
11753 | /* Flag the location appropriately. We use a different state to | |
11754 | let everyone know that we already updated the set of locations | |
11755 | with addr bl->address and program space bl->pspace. This is so | |
11756 | we don't have to keep calling these functions just to mark locations | |
11757 | that have already been marked. */ | |
11758 | loc->condition_changed = condition_updated; | |
11759 | ||
11760 | /* Free the agent expression bytecode as well. We will compute | |
11761 | it later on. */ | |
833177a4 | 11762 | loc->cond_bytecode.reset (); |
b775012e LM |
11763 | } |
11764 | } | |
44702360 PA |
11765 | /* Called whether new breakpoints are created, or existing breakpoints |
11766 | deleted, to update the global location list and recompute which | |
11767 | locations are duplicate of which. | |
b775012e | 11768 | |
04086b45 PA |
11769 | The INSERT_MODE flag determines whether locations may not, may, or |
11770 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11771 | info. */ | |
b60e7edf | 11772 | |
0d381245 | 11773 | static void |
44702360 | 11774 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11775 | { |
74960c60 | 11776 | struct breakpoint *b; |
876fa593 | 11777 | struct bp_location **locp, *loc; |
b775012e LM |
11778 | /* Last breakpoint location address that was marked for update. */ |
11779 | CORE_ADDR last_addr = 0; | |
11780 | /* Last breakpoint location program space that was marked for update. */ | |
11781 | int last_pspace_num = -1; | |
f7545552 | 11782 | |
2d134ed3 PA |
11783 | /* Used in the duplicates detection below. When iterating over all |
11784 | bp_locations, points to the first bp_location of a given address. | |
11785 | Breakpoints and watchpoints of different types are never | |
11786 | duplicates of each other. Keep one pointer for each type of | |
11787 | breakpoint/watchpoint, so we only need to loop over all locations | |
11788 | once. */ | |
11789 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11790 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11791 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11792 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11793 | |
f5336ca5 PA |
11794 | /* Saved former bp_locations array which we compare against the newly |
11795 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11796 | struct bp_location **old_locp; |
f5336ca5 | 11797 | unsigned old_locations_count; |
81b1e71c | 11798 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11799 | |
f5336ca5 PA |
11800 | old_locations_count = bp_locations_count; |
11801 | bp_locations = NULL; | |
11802 | bp_locations_count = 0; | |
0d381245 | 11803 | |
74960c60 | 11804 | ALL_BREAKPOINTS (b) |
876fa593 | 11805 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11806 | bp_locations_count++; |
876fa593 | 11807 | |
f5336ca5 PA |
11808 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11809 | locp = bp_locations; | |
876fa593 JK |
11810 | ALL_BREAKPOINTS (b) |
11811 | for (loc = b->loc; loc; loc = loc->next) | |
11812 | *locp++ = loc; | |
f5336ca5 PA |
11813 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11814 | bp_locations_compare); | |
876fa593 | 11815 | |
f5336ca5 | 11816 | bp_locations_target_extensions_update (); |
74960c60 | 11817 | |
4a64f543 MS |
11818 | /* Identify bp_location instances that are no longer present in the |
11819 | new list, and therefore should be freed. Note that it's not | |
11820 | necessary that those locations should be removed from inferior -- | |
11821 | if there's another location at the same address (previously | |
11822 | marked as duplicate), we don't need to remove/insert the | |
11823 | location. | |
876fa593 | 11824 | |
4a64f543 MS |
11825 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11826 | and former bp_location array state respectively. */ | |
876fa593 | 11827 | |
f5336ca5 | 11828 | locp = bp_locations; |
81b1e71c TT |
11829 | for (old_locp = old_locations.get (); |
11830 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11831 | old_locp++) |
74960c60 | 11832 | { |
876fa593 | 11833 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11834 | struct bp_location **loc2p; |
876fa593 | 11835 | |
e5dd4106 | 11836 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11837 | not, we have to free it. */ |
c7d46a38 | 11838 | int found_object = 0; |
20874c92 VP |
11839 | /* Tells if the location should remain inserted in the target. */ |
11840 | int keep_in_target = 0; | |
11841 | int removed = 0; | |
876fa593 | 11842 | |
4a64f543 MS |
11843 | /* Skip LOCP entries which will definitely never be needed. |
11844 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11845 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11846 | && (*locp)->address < old_loc->address) |
876fa593 | 11847 | locp++; |
c7d46a38 PA |
11848 | |
11849 | for (loc2p = locp; | |
f5336ca5 | 11850 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11851 | && (*loc2p)->address == old_loc->address); |
11852 | loc2p++) | |
11853 | { | |
b775012e LM |
11854 | /* Check if this is a new/duplicated location or a duplicated |
11855 | location that had its condition modified. If so, we want to send | |
11856 | its condition to the target if evaluation of conditions is taking | |
11857 | place there. */ | |
11858 | if ((*loc2p)->condition_changed == condition_modified | |
11859 | && (last_addr != old_loc->address | |
11860 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11861 | { |
b775012e LM |
11862 | force_breakpoint_reinsertion (*loc2p); |
11863 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11864 | } |
b775012e LM |
11865 | |
11866 | if (*loc2p == old_loc) | |
11867 | found_object = 1; | |
c7d46a38 | 11868 | } |
74960c60 | 11869 | |
b775012e LM |
11870 | /* We have already handled this address, update it so that we don't |
11871 | have to go through updates again. */ | |
11872 | last_addr = old_loc->address; | |
11873 | ||
11874 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11875 | if (!found_object) | |
11876 | force_breakpoint_reinsertion (old_loc); | |
11877 | ||
4a64f543 MS |
11878 | /* If this location is no longer present, and inserted, look if |
11879 | there's maybe a new location at the same address. If so, | |
11880 | mark that one inserted, and don't remove this one. This is | |
11881 | needed so that we don't have a time window where a breakpoint | |
11882 | at certain location is not inserted. */ | |
74960c60 | 11883 | |
876fa593 | 11884 | if (old_loc->inserted) |
0d381245 | 11885 | { |
4a64f543 MS |
11886 | /* If the location is inserted now, we might have to remove |
11887 | it. */ | |
74960c60 | 11888 | |
876fa593 | 11889 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11890 | { |
4a64f543 MS |
11891 | /* The location is still present in the location list, |
11892 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11893 | keep_in_target = 1; |
74960c60 VP |
11894 | } |
11895 | else | |
11896 | { | |
b775012e LM |
11897 | /* This location still exists, but it won't be kept in the |
11898 | target since it may have been disabled. We proceed to | |
11899 | remove its target-side condition. */ | |
11900 | ||
4a64f543 MS |
11901 | /* The location is either no longer present, or got |
11902 | disabled. See if there's another location at the | |
11903 | same address, in which case we don't need to remove | |
11904 | this one from the target. */ | |
876fa593 | 11905 | |
2bdf28a0 | 11906 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11907 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11908 | { | |
876fa593 | 11909 | for (loc2p = locp; |
f5336ca5 | 11910 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11911 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11912 | loc2p++) |
11913 | { | |
11914 | struct bp_location *loc2 = *loc2p; | |
11915 | ||
2d134ed3 | 11916 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11917 | { |
85d721b8 PA |
11918 | /* Read watchpoint locations are switched to |
11919 | access watchpoints, if the former are not | |
11920 | supported, but the latter are. */ | |
11921 | if (is_hardware_watchpoint (old_loc->owner)) | |
11922 | { | |
11923 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11924 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11925 | } | |
11926 | ||
934709f0 PW |
11927 | /* loc2 is a duplicated location. We need to check |
11928 | if it should be inserted in case it will be | |
11929 | unduplicated. */ | |
11930 | if (loc2 != old_loc | |
11931 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11932 | { |
934709f0 | 11933 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11934 | keep_in_target = 1; |
11935 | break; | |
11936 | } | |
876fa593 JK |
11937 | } |
11938 | } | |
11939 | } | |
74960c60 VP |
11940 | } |
11941 | ||
20874c92 VP |
11942 | if (!keep_in_target) |
11943 | { | |
834c0d03 | 11944 | if (remove_breakpoint (old_loc)) |
20874c92 | 11945 | { |
4a64f543 MS |
11946 | /* This is just about all we can do. We could keep |
11947 | this location on the global list, and try to | |
11948 | remove it next time, but there's no particular | |
11949 | reason why we will succeed next time. | |
20874c92 | 11950 | |
4a64f543 MS |
11951 | Note that at this point, old_loc->owner is still |
11952 | valid, as delete_breakpoint frees the breakpoint | |
11953 | only after calling us. */ | |
3e43a32a MS |
11954 | printf_filtered (_("warning: Error removing " |
11955 | "breakpoint %d\n"), | |
876fa593 | 11956 | old_loc->owner->number); |
20874c92 VP |
11957 | } |
11958 | removed = 1; | |
11959 | } | |
0d381245 | 11960 | } |
74960c60 VP |
11961 | |
11962 | if (!found_object) | |
1c5cfe86 | 11963 | { |
fbea99ea | 11964 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11965 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11966 | { |
db82e815 PA |
11967 | /* This location was removed from the target. In |
11968 | non-stop mode, a race condition is possible where | |
11969 | we've removed a breakpoint, but stop events for that | |
11970 | breakpoint are already queued and will arrive later. | |
11971 | We apply an heuristic to be able to distinguish such | |
11972 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11973 | breakpoint location for a bit, and will retire it | |
11974 | after we see some number of events. The theory here | |
11975 | is that reporting of events should, "on the average", | |
11976 | be fair, so after a while we'll see events from all | |
11977 | threads that have anything of interest, and no longer | |
11978 | need to keep this breakpoint location around. We | |
11979 | don't hold locations forever so to reduce chances of | |
11980 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11981 | SIGTRAP. | |
11982 | ||
11983 | The heuristic failing can be disastrous on | |
11984 | decr_pc_after_break targets. | |
11985 | ||
11986 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11987 | if we fail to recognize a late breakpoint SIGTRAP, | |
11988 | because events_till_retirement has reached 0 too | |
11989 | soon, we'll fail to do the PC adjustment, and report | |
11990 | a random SIGTRAP to the user. When the user resumes | |
11991 | the inferior, it will most likely immediately crash | |
2dec564e | 11992 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11993 | corrupted, because of being resumed e.g., in the |
11994 | middle of a multi-byte instruction, or skipped a | |
11995 | one-byte instruction. This was actually seen happen | |
11996 | on native x86-linux, and should be less rare on | |
11997 | targets that do not support new thread events, like | |
11998 | remote, due to the heuristic depending on | |
11999 | thread_count. | |
12000 | ||
12001 | Mistaking a random SIGTRAP for a breakpoint trap | |
12002 | causes similar symptoms (PC adjustment applied when | |
12003 | it shouldn't), but then again, playing with SIGTRAPs | |
12004 | behind the debugger's back is asking for trouble. | |
12005 | ||
12006 | Since hardware watchpoint traps are always | |
12007 | distinguishable from other traps, so we don't need to | |
12008 | apply keep hardware watchpoint moribund locations | |
12009 | around. We simply always ignore hardware watchpoint | |
12010 | traps we can no longer explain. */ | |
12011 | ||
876fa593 JK |
12012 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12013 | old_loc->owner = NULL; | |
20874c92 | 12014 | |
876fa593 | 12015 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12016 | } |
12017 | else | |
f431efe5 PA |
12018 | { |
12019 | old_loc->owner = NULL; | |
12020 | decref_bp_location (&old_loc); | |
12021 | } | |
20874c92 | 12022 | } |
74960c60 | 12023 | } |
1c5cfe86 | 12024 | |
348d480f PA |
12025 | /* Rescan breakpoints at the same address and section, marking the |
12026 | first one as "first" and any others as "duplicates". This is so | |
12027 | that the bpt instruction is only inserted once. If we have a | |
12028 | permanent breakpoint at the same place as BPT, make that one the | |
12029 | official one, and the rest as duplicates. Permanent breakpoints | |
12030 | are sorted first for the same address. | |
12031 | ||
12032 | Do the same for hardware watchpoints, but also considering the | |
12033 | watchpoint's type (regular/access/read) and length. */ | |
12034 | ||
12035 | bp_loc_first = NULL; | |
12036 | wp_loc_first = NULL; | |
12037 | awp_loc_first = NULL; | |
12038 | rwp_loc_first = NULL; | |
12039 | ALL_BP_LOCATIONS (loc, locp) | |
12040 | { | |
12041 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12042 | non-NULL. */ | |
348d480f | 12043 | struct bp_location **loc_first_p; |
d3fbdd86 | 12044 | b = loc->owner; |
348d480f | 12045 | |
6f380991 | 12046 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12047 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12048 | /* Don't detect duplicate for tracepoint locations because they are |
12049 | never duplicated. See the comments in field `duplicate' of | |
12050 | `struct bp_location'. */ | |
348d480f | 12051 | || is_tracepoint (b)) |
b775012e LM |
12052 | { |
12053 | /* Clear the condition modification flag. */ | |
12054 | loc->condition_changed = condition_unchanged; | |
12055 | continue; | |
12056 | } | |
348d480f | 12057 | |
348d480f PA |
12058 | if (b->type == bp_hardware_watchpoint) |
12059 | loc_first_p = &wp_loc_first; | |
12060 | else if (b->type == bp_read_watchpoint) | |
12061 | loc_first_p = &rwp_loc_first; | |
12062 | else if (b->type == bp_access_watchpoint) | |
12063 | loc_first_p = &awp_loc_first; | |
12064 | else | |
12065 | loc_first_p = &bp_loc_first; | |
12066 | ||
12067 | if (*loc_first_p == NULL | |
12068 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12069 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12070 | { | |
12071 | *loc_first_p = loc; | |
12072 | loc->duplicate = 0; | |
b775012e LM |
12073 | |
12074 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12075 | { | |
12076 | loc->needs_update = 1; | |
12077 | /* Clear the condition modification flag. */ | |
12078 | loc->condition_changed = condition_unchanged; | |
12079 | } | |
348d480f PA |
12080 | continue; |
12081 | } | |
12082 | ||
934709f0 PW |
12083 | |
12084 | /* This and the above ensure the invariant that the first location | |
12085 | is not duplicated, and is the inserted one. | |
12086 | All following are marked as duplicated, and are not inserted. */ | |
12087 | if (loc->inserted) | |
12088 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12089 | loc->duplicate = 1; |
12090 | ||
b775012e LM |
12091 | /* Clear the condition modification flag. */ |
12092 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12093 | } |
12094 | ||
a25a5a45 | 12095 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12096 | { |
04086b45 | 12097 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12098 | insert_breakpoint_locations (); |
12099 | else | |
12100 | { | |
44702360 PA |
12101 | /* Even though the caller told us to not insert new |
12102 | locations, we may still need to update conditions on the | |
12103 | target's side of breakpoints that were already inserted | |
12104 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12105 | only update conditions for locations that are marked |
12106 | "needs_update". */ | |
12107 | update_inserted_breakpoint_locations (); | |
12108 | } | |
12109 | } | |
348d480f | 12110 | |
04086b45 | 12111 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12112 | download_tracepoint_locations (); |
348d480f PA |
12113 | } |
12114 | ||
12115 | void | |
12116 | breakpoint_retire_moribund (void) | |
12117 | { | |
12118 | struct bp_location *loc; | |
12119 | int ix; | |
12120 | ||
12121 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12122 | if (--(loc->events_till_retirement) == 0) | |
12123 | { | |
12124 | decref_bp_location (&loc); | |
12125 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12126 | --ix; | |
12127 | } | |
12128 | } | |
12129 | ||
12130 | static void | |
44702360 | 12131 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12132 | { |
348d480f | 12133 | |
492d29ea PA |
12134 | TRY |
12135 | { | |
12136 | update_global_location_list (insert_mode); | |
12137 | } | |
12138 | CATCH (e, RETURN_MASK_ERROR) | |
12139 | { | |
12140 | } | |
12141 | END_CATCH | |
348d480f PA |
12142 | } |
12143 | ||
12144 | /* Clear BKP from a BPS. */ | |
12145 | ||
12146 | static void | |
12147 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12148 | { | |
12149 | bpstat bs; | |
12150 | ||
12151 | for (bs = bps; bs; bs = bs->next) | |
12152 | if (bs->breakpoint_at == bpt) | |
12153 | { | |
12154 | bs->breakpoint_at = NULL; | |
12155 | bs->old_val = NULL; | |
12156 | /* bs->commands will be freed later. */ | |
12157 | } | |
12158 | } | |
12159 | ||
12160 | /* Callback for iterate_over_threads. */ | |
12161 | static int | |
12162 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12163 | { | |
9a3c8263 | 12164 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12165 | |
12166 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12167 | return 0; | |
12168 | } | |
12169 | ||
12170 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12171 | callbacks. */ | |
12172 | ||
12173 | static void | |
12174 | say_where (struct breakpoint *b) | |
12175 | { | |
12176 | struct value_print_options opts; | |
12177 | ||
12178 | get_user_print_options (&opts); | |
12179 | ||
12180 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12181 | single string. */ | |
12182 | if (b->loc == NULL) | |
12183 | { | |
f00aae0f KS |
12184 | /* For pending locations, the output differs slightly based |
12185 | on b->extra_string. If this is non-NULL, it contains either | |
12186 | a condition or dprintf arguments. */ | |
12187 | if (b->extra_string == NULL) | |
12188 | { | |
12189 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12190 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12191 | } |
12192 | else if (b->type == bp_dprintf) | |
12193 | { | |
12194 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12195 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12196 | b->extra_string); |
12197 | } | |
12198 | else | |
12199 | { | |
12200 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12201 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12202 | b->extra_string); |
12203 | } | |
348d480f PA |
12204 | } |
12205 | else | |
12206 | { | |
2f202fde | 12207 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12208 | { |
12209 | printf_filtered (" at "); | |
12210 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12211 | gdb_stdout); | |
12212 | } | |
2f202fde | 12213 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12214 | { |
12215 | /* If there is a single location, we can print the location | |
12216 | more nicely. */ | |
12217 | if (b->loc->next == NULL) | |
12218 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12219 | symtab_to_filename_for_display (b->loc->symtab), |
12220 | b->loc->line_number); | |
f8eba3c6 TT |
12221 | else |
12222 | /* This is not ideal, but each location may have a | |
12223 | different file name, and this at least reflects the | |
12224 | real situation somewhat. */ | |
f00aae0f | 12225 | printf_filtered (": %s.", |
d28cd78a | 12226 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12227 | } |
348d480f PA |
12228 | |
12229 | if (b->loc->next) | |
12230 | { | |
12231 | struct bp_location *loc = b->loc; | |
12232 | int n = 0; | |
12233 | for (; loc; loc = loc->next) | |
12234 | ++n; | |
12235 | printf_filtered (" (%d locations)", n); | |
12236 | } | |
12237 | } | |
12238 | } | |
12239 | ||
348d480f PA |
12240 | /* Default bp_location_ops methods. */ |
12241 | ||
12242 | static void | |
12243 | bp_location_dtor (struct bp_location *self) | |
12244 | { | |
348d480f PA |
12245 | xfree (self->function_name); |
12246 | } | |
12247 | ||
12248 | static const struct bp_location_ops bp_location_ops = | |
12249 | { | |
12250 | bp_location_dtor | |
12251 | }; | |
12252 | ||
c1fc2657 | 12253 | /* Destructor for the breakpoint base class. */ |
348d480f | 12254 | |
c1fc2657 | 12255 | breakpoint::~breakpoint () |
348d480f | 12256 | { |
c1fc2657 SM |
12257 | xfree (this->cond_string); |
12258 | xfree (this->extra_string); | |
12259 | xfree (this->filter); | |
348d480f PA |
12260 | } |
12261 | ||
2060206e PA |
12262 | static struct bp_location * |
12263 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12264 | { |
5625a286 | 12265 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12266 | } |
12267 | ||
2060206e PA |
12268 | static void |
12269 | base_breakpoint_re_set (struct breakpoint *b) | |
12270 | { | |
12271 | /* Nothing to re-set. */ | |
12272 | } | |
12273 | ||
12274 | #define internal_error_pure_virtual_called() \ | |
12275 | gdb_assert_not_reached ("pure virtual function called") | |
12276 | ||
12277 | static int | |
12278 | base_breakpoint_insert_location (struct bp_location *bl) | |
12279 | { | |
12280 | internal_error_pure_virtual_called (); | |
12281 | } | |
12282 | ||
12283 | static int | |
73971819 PA |
12284 | base_breakpoint_remove_location (struct bp_location *bl, |
12285 | enum remove_bp_reason reason) | |
2060206e PA |
12286 | { |
12287 | internal_error_pure_virtual_called (); | |
12288 | } | |
12289 | ||
12290 | static int | |
12291 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12292 | const address_space *aspace, |
09ac7c10 TT |
12293 | CORE_ADDR bp_addr, |
12294 | const struct target_waitstatus *ws) | |
2060206e PA |
12295 | { |
12296 | internal_error_pure_virtual_called (); | |
12297 | } | |
12298 | ||
12299 | static void | |
12300 | base_breakpoint_check_status (bpstat bs) | |
12301 | { | |
12302 | /* Always stop. */ | |
12303 | } | |
12304 | ||
12305 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12306 | errors. */ | |
12307 | ||
12308 | static int | |
12309 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12310 | { | |
12311 | internal_error_pure_virtual_called (); | |
12312 | } | |
12313 | ||
12314 | /* A "resources_needed" breakpoint_ops method that just internal | |
12315 | errors. */ | |
12316 | ||
12317 | static int | |
12318 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12319 | { | |
12320 | internal_error_pure_virtual_called (); | |
12321 | } | |
12322 | ||
12323 | static enum print_stop_action | |
12324 | base_breakpoint_print_it (bpstat bs) | |
12325 | { | |
12326 | internal_error_pure_virtual_called (); | |
12327 | } | |
12328 | ||
12329 | static void | |
12330 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12331 | struct ui_out *uiout) | |
12332 | { | |
12333 | /* nothing */ | |
12334 | } | |
12335 | ||
12336 | static void | |
12337 | base_breakpoint_print_mention (struct breakpoint *b) | |
12338 | { | |
12339 | internal_error_pure_virtual_called (); | |
12340 | } | |
12341 | ||
12342 | static void | |
12343 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12344 | { | |
12345 | internal_error_pure_virtual_called (); | |
12346 | } | |
12347 | ||
983af33b | 12348 | static void |
f00aae0f KS |
12349 | base_breakpoint_create_sals_from_location |
12350 | (const struct event_location *location, | |
12351 | struct linespec_result *canonical, | |
12352 | enum bptype type_wanted) | |
983af33b SDJ |
12353 | { |
12354 | internal_error_pure_virtual_called (); | |
12355 | } | |
12356 | ||
12357 | static void | |
12358 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12359 | struct linespec_result *c, | |
e1e01040 PA |
12360 | gdb::unique_xmalloc_ptr<char> cond_string, |
12361 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12362 | enum bptype type_wanted, |
12363 | enum bpdisp disposition, | |
12364 | int thread, | |
12365 | int task, int ignore_count, | |
12366 | const struct breakpoint_ops *o, | |
12367 | int from_tty, int enabled, | |
44f238bb | 12368 | int internal, unsigned flags) |
983af33b SDJ |
12369 | { |
12370 | internal_error_pure_virtual_called (); | |
12371 | } | |
12372 | ||
6c5b2ebe | 12373 | static std::vector<symtab_and_line> |
f00aae0f KS |
12374 | base_breakpoint_decode_location (struct breakpoint *b, |
12375 | const struct event_location *location, | |
6c5b2ebe | 12376 | struct program_space *search_pspace) |
983af33b SDJ |
12377 | { |
12378 | internal_error_pure_virtual_called (); | |
12379 | } | |
12380 | ||
ab04a2af TT |
12381 | /* The default 'explains_signal' method. */ |
12382 | ||
47591c29 | 12383 | static int |
427cd150 | 12384 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12385 | { |
47591c29 | 12386 | return 1; |
ab04a2af TT |
12387 | } |
12388 | ||
9d6e6e84 HZ |
12389 | /* The default "after_condition_true" method. */ |
12390 | ||
12391 | static void | |
12392 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12393 | { | |
12394 | /* Nothing to do. */ | |
12395 | } | |
12396 | ||
ab04a2af | 12397 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12398 | { |
2060206e PA |
12399 | base_breakpoint_allocate_location, |
12400 | base_breakpoint_re_set, | |
12401 | base_breakpoint_insert_location, | |
12402 | base_breakpoint_remove_location, | |
12403 | base_breakpoint_breakpoint_hit, | |
12404 | base_breakpoint_check_status, | |
12405 | base_breakpoint_resources_needed, | |
12406 | base_breakpoint_works_in_software_mode, | |
12407 | base_breakpoint_print_it, | |
12408 | NULL, | |
12409 | base_breakpoint_print_one_detail, | |
12410 | base_breakpoint_print_mention, | |
983af33b | 12411 | base_breakpoint_print_recreate, |
5f700d83 | 12412 | base_breakpoint_create_sals_from_location, |
983af33b | 12413 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12414 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12415 | base_breakpoint_explains_signal, |
12416 | base_breakpoint_after_condition_true, | |
2060206e PA |
12417 | }; |
12418 | ||
12419 | /* Default breakpoint_ops methods. */ | |
12420 | ||
12421 | static void | |
348d480f PA |
12422 | bkpt_re_set (struct breakpoint *b) |
12423 | { | |
06edf0c0 | 12424 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12425 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12426 | { |
f00aae0f | 12427 | /* Anything without a location can't be re-set. */ |
348d480f | 12428 | delete_breakpoint (b); |
06edf0c0 | 12429 | return; |
348d480f | 12430 | } |
06edf0c0 PA |
12431 | |
12432 | breakpoint_re_set_default (b); | |
348d480f PA |
12433 | } |
12434 | ||
2060206e | 12435 | static int |
348d480f PA |
12436 | bkpt_insert_location (struct bp_location *bl) |
12437 | { | |
cd6c3b4f YQ |
12438 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12439 | ||
579c6ad9 | 12440 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12441 | bl->target_info.placed_address = addr; |
12442 | ||
348d480f | 12443 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12444 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12445 | else |
7c16b83e | 12446 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12447 | } |
12448 | ||
2060206e | 12449 | static int |
73971819 | 12450 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12451 | { |
12452 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12453 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12454 | else | |
73971819 | 12455 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12456 | } |
12457 | ||
2060206e | 12458 | static int |
348d480f | 12459 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12460 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12461 | const struct target_waitstatus *ws) |
348d480f | 12462 | { |
09ac7c10 | 12463 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12464 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12465 | return 0; |
12466 | ||
348d480f PA |
12467 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12468 | aspace, bp_addr)) | |
12469 | return 0; | |
12470 | ||
12471 | if (overlay_debugging /* unmapped overlay section */ | |
12472 | && section_is_overlay (bl->section) | |
12473 | && !section_is_mapped (bl->section)) | |
12474 | return 0; | |
12475 | ||
12476 | return 1; | |
12477 | } | |
12478 | ||
cd1608cc PA |
12479 | static int |
12480 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12481 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12482 | const struct target_waitstatus *ws) |
12483 | { | |
12484 | if (dprintf_style == dprintf_style_agent | |
12485 | && target_can_run_breakpoint_commands ()) | |
12486 | { | |
12487 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12488 | for this address it must be for a breakpoint that happens to | |
12489 | be set at the same address. */ | |
12490 | return 0; | |
12491 | } | |
12492 | ||
12493 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12494 | } | |
12495 | ||
2060206e | 12496 | static int |
348d480f PA |
12497 | bkpt_resources_needed (const struct bp_location *bl) |
12498 | { | |
12499 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12500 | ||
12501 | return 1; | |
12502 | } | |
12503 | ||
2060206e | 12504 | static enum print_stop_action |
348d480f PA |
12505 | bkpt_print_it (bpstat bs) |
12506 | { | |
348d480f PA |
12507 | struct breakpoint *b; |
12508 | const struct bp_location *bl; | |
001c8c33 | 12509 | int bp_temp; |
79a45e25 | 12510 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12511 | |
12512 | gdb_assert (bs->bp_location_at != NULL); | |
12513 | ||
12514 | bl = bs->bp_location_at; | |
12515 | b = bs->breakpoint_at; | |
12516 | ||
001c8c33 PA |
12517 | bp_temp = b->disposition == disp_del; |
12518 | if (bl->address != bl->requested_address) | |
12519 | breakpoint_adjustment_warning (bl->requested_address, | |
12520 | bl->address, | |
12521 | b->number, 1); | |
12522 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12523 | maybe_print_thread_hit_breakpoint (uiout); |
12524 | ||
001c8c33 | 12525 | if (bp_temp) |
112e8700 | 12526 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12527 | else |
112e8700 SM |
12528 | uiout->text ("Breakpoint "); |
12529 | if (uiout->is_mi_like_p ()) | |
348d480f | 12530 | { |
112e8700 | 12531 | uiout->field_string ("reason", |
001c8c33 | 12532 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12533 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12534 | } |
112e8700 SM |
12535 | uiout->field_int ("bkptno", b->number); |
12536 | uiout->text (", "); | |
06edf0c0 | 12537 | |
001c8c33 | 12538 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12539 | } |
12540 | ||
2060206e | 12541 | static void |
06edf0c0 PA |
12542 | bkpt_print_mention (struct breakpoint *b) |
12543 | { | |
112e8700 | 12544 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12545 | return; |
12546 | ||
12547 | switch (b->type) | |
12548 | { | |
12549 | case bp_breakpoint: | |
12550 | case bp_gnu_ifunc_resolver: | |
12551 | if (b->disposition == disp_del) | |
12552 | printf_filtered (_("Temporary breakpoint")); | |
12553 | else | |
12554 | printf_filtered (_("Breakpoint")); | |
12555 | printf_filtered (_(" %d"), b->number); | |
12556 | if (b->type == bp_gnu_ifunc_resolver) | |
12557 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12558 | break; | |
12559 | case bp_hardware_breakpoint: | |
12560 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12561 | break; | |
e7e0cddf SS |
12562 | case bp_dprintf: |
12563 | printf_filtered (_("Dprintf %d"), b->number); | |
12564 | break; | |
06edf0c0 PA |
12565 | } |
12566 | ||
12567 | say_where (b); | |
12568 | } | |
12569 | ||
2060206e | 12570 | static void |
06edf0c0 PA |
12571 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12572 | { | |
12573 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12574 | fprintf_unfiltered (fp, "tbreak"); | |
12575 | else if (tp->type == bp_breakpoint) | |
12576 | fprintf_unfiltered (fp, "break"); | |
12577 | else if (tp->type == bp_hardware_breakpoint | |
12578 | && tp->disposition == disp_del) | |
12579 | fprintf_unfiltered (fp, "thbreak"); | |
12580 | else if (tp->type == bp_hardware_breakpoint) | |
12581 | fprintf_unfiltered (fp, "hbreak"); | |
12582 | else | |
12583 | internal_error (__FILE__, __LINE__, | |
12584 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12585 | ||
f00aae0f | 12586 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12587 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12588 | |
12589 | /* Print out extra_string if this breakpoint is pending. It might | |
12590 | contain, for example, conditions that were set by the user. */ | |
12591 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12592 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12593 | ||
dd11a36c | 12594 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12595 | } |
12596 | ||
983af33b | 12597 | static void |
f00aae0f KS |
12598 | bkpt_create_sals_from_location (const struct event_location *location, |
12599 | struct linespec_result *canonical, | |
12600 | enum bptype type_wanted) | |
983af33b | 12601 | { |
f00aae0f | 12602 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12603 | } |
12604 | ||
12605 | static void | |
12606 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12607 | struct linespec_result *canonical, | |
e1e01040 PA |
12608 | gdb::unique_xmalloc_ptr<char> cond_string, |
12609 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12610 | enum bptype type_wanted, |
12611 | enum bpdisp disposition, | |
12612 | int thread, | |
12613 | int task, int ignore_count, | |
12614 | const struct breakpoint_ops *ops, | |
12615 | int from_tty, int enabled, | |
44f238bb | 12616 | int internal, unsigned flags) |
983af33b | 12617 | { |
023fa29b | 12618 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12619 | std::move (cond_string), |
12620 | std::move (extra_string), | |
e7e0cddf | 12621 | type_wanted, |
983af33b SDJ |
12622 | disposition, thread, task, |
12623 | ignore_count, ops, from_tty, | |
44f238bb | 12624 | enabled, internal, flags); |
983af33b SDJ |
12625 | } |
12626 | ||
6c5b2ebe | 12627 | static std::vector<symtab_and_line> |
f00aae0f KS |
12628 | bkpt_decode_location (struct breakpoint *b, |
12629 | const struct event_location *location, | |
6c5b2ebe | 12630 | struct program_space *search_pspace) |
983af33b | 12631 | { |
6c5b2ebe | 12632 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12633 | } |
12634 | ||
06edf0c0 PA |
12635 | /* Virtual table for internal breakpoints. */ |
12636 | ||
12637 | static void | |
12638 | internal_bkpt_re_set (struct breakpoint *b) | |
12639 | { | |
12640 | switch (b->type) | |
12641 | { | |
12642 | /* Delete overlay event and longjmp master breakpoints; they | |
12643 | will be reset later by breakpoint_re_set. */ | |
12644 | case bp_overlay_event: | |
12645 | case bp_longjmp_master: | |
12646 | case bp_std_terminate_master: | |
12647 | case bp_exception_master: | |
12648 | delete_breakpoint (b); | |
12649 | break; | |
12650 | ||
12651 | /* This breakpoint is special, it's set up when the inferior | |
12652 | starts and we really don't want to touch it. */ | |
12653 | case bp_shlib_event: | |
12654 | ||
12655 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12656 | it is set up, we do not want to touch it. */ | |
12657 | case bp_thread_event: | |
12658 | break; | |
12659 | } | |
12660 | } | |
12661 | ||
12662 | static void | |
12663 | internal_bkpt_check_status (bpstat bs) | |
12664 | { | |
a9b3a50f PA |
12665 | if (bs->breakpoint_at->type == bp_shlib_event) |
12666 | { | |
12667 | /* If requested, stop when the dynamic linker notifies GDB of | |
12668 | events. This allows the user to get control and place | |
12669 | breakpoints in initializer routines for dynamically loaded | |
12670 | objects (among other things). */ | |
12671 | bs->stop = stop_on_solib_events; | |
12672 | bs->print = stop_on_solib_events; | |
12673 | } | |
12674 | else | |
12675 | bs->stop = 0; | |
06edf0c0 PA |
12676 | } |
12677 | ||
12678 | static enum print_stop_action | |
12679 | internal_bkpt_print_it (bpstat bs) | |
12680 | { | |
06edf0c0 | 12681 | struct breakpoint *b; |
06edf0c0 | 12682 | |
06edf0c0 PA |
12683 | b = bs->breakpoint_at; |
12684 | ||
06edf0c0 PA |
12685 | switch (b->type) |
12686 | { | |
348d480f PA |
12687 | case bp_shlib_event: |
12688 | /* Did we stop because the user set the stop_on_solib_events | |
12689 | variable? (If so, we report this as a generic, "Stopped due | |
12690 | to shlib event" message.) */ | |
edcc5120 | 12691 | print_solib_event (0); |
348d480f PA |
12692 | break; |
12693 | ||
12694 | case bp_thread_event: | |
12695 | /* Not sure how we will get here. | |
12696 | GDB should not stop for these breakpoints. */ | |
12697 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12698 | break; |
12699 | ||
12700 | case bp_overlay_event: | |
12701 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12702 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12703 | break; |
12704 | ||
12705 | case bp_longjmp_master: | |
12706 | /* These should never be enabled. */ | |
12707 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12708 | break; |
12709 | ||
12710 | case bp_std_terminate_master: | |
12711 | /* These should never be enabled. */ | |
12712 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12713 | "gdb should not stop!\n")); | |
348d480f PA |
12714 | break; |
12715 | ||
12716 | case bp_exception_master: | |
12717 | /* These should never be enabled. */ | |
12718 | printf_filtered (_("Exception Master Breakpoint: " | |
12719 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12720 | break; |
12721 | } | |
12722 | ||
001c8c33 | 12723 | return PRINT_NOTHING; |
06edf0c0 PA |
12724 | } |
12725 | ||
12726 | static void | |
12727 | internal_bkpt_print_mention (struct breakpoint *b) | |
12728 | { | |
12729 | /* Nothing to mention. These breakpoints are internal. */ | |
12730 | } | |
12731 | ||
06edf0c0 PA |
12732 | /* Virtual table for momentary breakpoints */ |
12733 | ||
12734 | static void | |
12735 | momentary_bkpt_re_set (struct breakpoint *b) | |
12736 | { | |
12737 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12738 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12739 | Otherwise these should have been blown away via the cleanup chain |
12740 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12741 | } | |
12742 | ||
12743 | static void | |
12744 | momentary_bkpt_check_status (bpstat bs) | |
12745 | { | |
12746 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12747 | } | |
12748 | ||
12749 | static enum print_stop_action | |
12750 | momentary_bkpt_print_it (bpstat bs) | |
12751 | { | |
001c8c33 | 12752 | return PRINT_UNKNOWN; |
348d480f PA |
12753 | } |
12754 | ||
06edf0c0 PA |
12755 | static void |
12756 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12757 | { |
06edf0c0 | 12758 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12759 | } |
12760 | ||
e2e4d78b JK |
12761 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12762 | ||
12763 | It gets cleared already on the removal of the first one of such placed | |
12764 | breakpoints. This is OK as they get all removed altogether. */ | |
12765 | ||
c1fc2657 | 12766 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12767 | { |
c1fc2657 | 12768 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12769 | |
c1fc2657 | 12770 | if (tp != NULL) |
e2e4d78b | 12771 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12772 | } |
12773 | ||
55aa24fb SDJ |
12774 | /* Specific methods for probe breakpoints. */ |
12775 | ||
12776 | static int | |
12777 | bkpt_probe_insert_location (struct bp_location *bl) | |
12778 | { | |
12779 | int v = bkpt_insert_location (bl); | |
12780 | ||
12781 | if (v == 0) | |
12782 | { | |
12783 | /* The insertion was successful, now let's set the probe's semaphore | |
12784 | if needed. */ | |
935676c9 | 12785 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12786 | } |
12787 | ||
12788 | return v; | |
12789 | } | |
12790 | ||
12791 | static int | |
73971819 PA |
12792 | bkpt_probe_remove_location (struct bp_location *bl, |
12793 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12794 | { |
12795 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12796 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12797 | |
73971819 | 12798 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12799 | } |
12800 | ||
12801 | static void | |
f00aae0f | 12802 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12803 | struct linespec_result *canonical, |
f00aae0f | 12804 | enum bptype type_wanted) |
55aa24fb SDJ |
12805 | { |
12806 | struct linespec_sals lsal; | |
12807 | ||
c2f4122d | 12808 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12809 | lsal.canonical |
12810 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12811 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12812 | } |
12813 | ||
6c5b2ebe | 12814 | static std::vector<symtab_and_line> |
f00aae0f KS |
12815 | bkpt_probe_decode_location (struct breakpoint *b, |
12816 | const struct event_location *location, | |
6c5b2ebe | 12817 | struct program_space *search_pspace) |
55aa24fb | 12818 | { |
6c5b2ebe PA |
12819 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12820 | if (sals.empty ()) | |
55aa24fb | 12821 | error (_("probe not found")); |
6c5b2ebe | 12822 | return sals; |
55aa24fb SDJ |
12823 | } |
12824 | ||
348d480f | 12825 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12826 | |
348d480f PA |
12827 | static void |
12828 | tracepoint_re_set (struct breakpoint *b) | |
12829 | { | |
12830 | breakpoint_re_set_default (b); | |
12831 | } | |
876fa593 | 12832 | |
348d480f PA |
12833 | static int |
12834 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12835 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12836 | const struct target_waitstatus *ws) |
348d480f PA |
12837 | { |
12838 | /* By definition, the inferior does not report stops at | |
12839 | tracepoints. */ | |
12840 | return 0; | |
74960c60 VP |
12841 | } |
12842 | ||
12843 | static void | |
348d480f PA |
12844 | tracepoint_print_one_detail (const struct breakpoint *self, |
12845 | struct ui_out *uiout) | |
74960c60 | 12846 | { |
d9b3f62e | 12847 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12848 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12849 | { |
12850 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12851 | |
112e8700 SM |
12852 | uiout->text ("\tmarker id is "); |
12853 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12854 | tp->static_trace_marker_id); |
112e8700 | 12855 | uiout->text ("\n"); |
348d480f | 12856 | } |
0d381245 VP |
12857 | } |
12858 | ||
a474d7c2 | 12859 | static void |
348d480f | 12860 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12861 | { |
112e8700 | 12862 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12863 | return; |
cc59ec59 | 12864 | |
348d480f PA |
12865 | switch (b->type) |
12866 | { | |
12867 | case bp_tracepoint: | |
12868 | printf_filtered (_("Tracepoint")); | |
12869 | printf_filtered (_(" %d"), b->number); | |
12870 | break; | |
12871 | case bp_fast_tracepoint: | |
12872 | printf_filtered (_("Fast tracepoint")); | |
12873 | printf_filtered (_(" %d"), b->number); | |
12874 | break; | |
12875 | case bp_static_tracepoint: | |
12876 | printf_filtered (_("Static tracepoint")); | |
12877 | printf_filtered (_(" %d"), b->number); | |
12878 | break; | |
12879 | default: | |
12880 | internal_error (__FILE__, __LINE__, | |
12881 | _("unhandled tracepoint type %d"), (int) b->type); | |
12882 | } | |
12883 | ||
12884 | say_where (b); | |
a474d7c2 PA |
12885 | } |
12886 | ||
348d480f | 12887 | static void |
d9b3f62e | 12888 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12889 | { |
d9b3f62e PA |
12890 | struct tracepoint *tp = (struct tracepoint *) self; |
12891 | ||
12892 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12893 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12894 | else if (self->type == bp_static_tracepoint) |
348d480f | 12895 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12896 | else if (self->type == bp_tracepoint) |
348d480f PA |
12897 | fprintf_unfiltered (fp, "trace"); |
12898 | else | |
12899 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12900 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12901 | |
f00aae0f | 12902 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12903 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12904 | print_recreate_thread (self, fp); |
12905 | ||
12906 | if (tp->pass_count) | |
12907 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12908 | } |
12909 | ||
983af33b | 12910 | static void |
f00aae0f KS |
12911 | tracepoint_create_sals_from_location (const struct event_location *location, |
12912 | struct linespec_result *canonical, | |
12913 | enum bptype type_wanted) | |
983af33b | 12914 | { |
f00aae0f | 12915 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12916 | } |
12917 | ||
12918 | static void | |
12919 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12920 | struct linespec_result *canonical, | |
e1e01040 PA |
12921 | gdb::unique_xmalloc_ptr<char> cond_string, |
12922 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12923 | enum bptype type_wanted, |
12924 | enum bpdisp disposition, | |
12925 | int thread, | |
12926 | int task, int ignore_count, | |
12927 | const struct breakpoint_ops *ops, | |
12928 | int from_tty, int enabled, | |
44f238bb | 12929 | int internal, unsigned flags) |
983af33b | 12930 | { |
023fa29b | 12931 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12932 | std::move (cond_string), |
12933 | std::move (extra_string), | |
e7e0cddf | 12934 | type_wanted, |
983af33b SDJ |
12935 | disposition, thread, task, |
12936 | ignore_count, ops, from_tty, | |
44f238bb | 12937 | enabled, internal, flags); |
983af33b SDJ |
12938 | } |
12939 | ||
6c5b2ebe | 12940 | static std::vector<symtab_and_line> |
f00aae0f KS |
12941 | tracepoint_decode_location (struct breakpoint *b, |
12942 | const struct event_location *location, | |
6c5b2ebe | 12943 | struct program_space *search_pspace) |
983af33b | 12944 | { |
6c5b2ebe | 12945 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12946 | } |
12947 | ||
2060206e | 12948 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12949 | |
55aa24fb SDJ |
12950 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12951 | static probe. */ | |
12952 | ||
12953 | static void | |
f00aae0f KS |
12954 | tracepoint_probe_create_sals_from_location |
12955 | (const struct event_location *location, | |
12956 | struct linespec_result *canonical, | |
12957 | enum bptype type_wanted) | |
55aa24fb SDJ |
12958 | { |
12959 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12960 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12961 | } |
12962 | ||
6c5b2ebe | 12963 | static std::vector<symtab_and_line> |
f00aae0f KS |
12964 | tracepoint_probe_decode_location (struct breakpoint *b, |
12965 | const struct event_location *location, | |
6c5b2ebe | 12966 | struct program_space *search_pspace) |
55aa24fb SDJ |
12967 | { |
12968 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12969 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12970 | } |
12971 | ||
12972 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12973 | ||
5c2b4418 HZ |
12974 | /* Dprintf breakpoint_ops methods. */ |
12975 | ||
12976 | static void | |
12977 | dprintf_re_set (struct breakpoint *b) | |
12978 | { | |
12979 | breakpoint_re_set_default (b); | |
12980 | ||
f00aae0f KS |
12981 | /* extra_string should never be non-NULL for dprintf. */ |
12982 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12983 | |
12984 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12985 | 2 - create a dprintf, which resolves fine. | |
12986 | 3 - disconnect from target 1 | |
12987 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12988 | ||
12989 | After steps #3/#4, you'll want the dprintf command list to | |
12990 | be updated, because target 1 and 2 may well return different | |
12991 | answers for target_can_run_breakpoint_commands(). | |
12992 | Given absence of finer grained resetting, we get to do | |
12993 | it all the time. */ | |
12994 | if (b->extra_string != NULL) | |
12995 | update_dprintf_command_list (b); | |
12996 | } | |
12997 | ||
2d9442cc HZ |
12998 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12999 | ||
13000 | static void | |
13001 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13002 | { | |
f00aae0f | 13003 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13004 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13005 | tp->extra_string); |
13006 | print_recreate_thread (tp, fp); | |
13007 | } | |
13008 | ||
9d6e6e84 HZ |
13009 | /* Implement the "after_condition_true" breakpoint_ops method for |
13010 | dprintf. | |
13011 | ||
13012 | dprintf's are implemented with regular commands in their command | |
13013 | list, but we run the commands here instead of before presenting the | |
13014 | stop to the user, as dprintf's don't actually cause a stop. This | |
13015 | also makes it so that the commands of multiple dprintfs at the same | |
13016 | address are all handled. */ | |
13017 | ||
13018 | static void | |
13019 | dprintf_after_condition_true (struct bpstats *bs) | |
13020 | { | |
04afa70c | 13021 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13022 | struct bpstats *tmp_bs_p = &tmp_bs; |
13023 | ||
13024 | /* dprintf's never cause a stop. This wasn't set in the | |
13025 | check_status hook instead because that would make the dprintf's | |
13026 | condition not be evaluated. */ | |
13027 | bs->stop = 0; | |
13028 | ||
13029 | /* Run the command list here. Take ownership of it instead of | |
13030 | copying. We never want these commands to run later in | |
13031 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13032 | be set at same address as this dprintf, or even if running the | |
13033 | commands here throws. */ | |
13034 | tmp_bs.commands = bs->commands; | |
13035 | bs->commands = NULL; | |
9d6e6e84 HZ |
13036 | |
13037 | bpstat_do_actions_1 (&tmp_bs_p); | |
13038 | ||
13039 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13040 | bpstat_do_actions_1 may return early without processing the whole | |
13041 | list. */ | |
9d6e6e84 HZ |
13042 | } |
13043 | ||
983af33b SDJ |
13044 | /* The breakpoint_ops structure to be used on static tracepoints with |
13045 | markers (`-m'). */ | |
13046 | ||
13047 | static void | |
f00aae0f | 13048 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13049 | struct linespec_result *canonical, |
f00aae0f | 13050 | enum bptype type_wanted) |
983af33b SDJ |
13051 | { |
13052 | struct linespec_sals lsal; | |
f00aae0f | 13053 | const char *arg_start, *arg; |
983af33b | 13054 | |
a20714ff | 13055 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13056 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13057 | |
f2fc3015 TT |
13058 | std::string str (arg_start, arg - arg_start); |
13059 | const char *ptr = str.c_str (); | |
a20714ff PA |
13060 | canonical->location |
13061 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13062 | |
8e9e35b1 TT |
13063 | lsal.canonical |
13064 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13065 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13066 | } |
13067 | ||
13068 | static void | |
13069 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13070 | struct linespec_result *canonical, | |
e1e01040 PA |
13071 | gdb::unique_xmalloc_ptr<char> cond_string, |
13072 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13073 | enum bptype type_wanted, |
13074 | enum bpdisp disposition, | |
13075 | int thread, | |
13076 | int task, int ignore_count, | |
13077 | const struct breakpoint_ops *ops, | |
13078 | int from_tty, int enabled, | |
44f238bb | 13079 | int internal, unsigned flags) |
983af33b | 13080 | { |
6c5b2ebe | 13081 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13082 | |
13083 | /* If the user is creating a static tracepoint by marker id | |
13084 | (strace -m MARKER_ID), then store the sals index, so that | |
13085 | breakpoint_re_set can try to match up which of the newly | |
13086 | found markers corresponds to this one, and, don't try to | |
13087 | expand multiple locations for each sal, given than SALS | |
13088 | already should contain all sals for MARKER_ID. */ | |
13089 | ||
6c5b2ebe | 13090 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13091 | { |
6c5b2ebe PA |
13092 | event_location_up location |
13093 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13094 | |
b270e6f9 | 13095 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13096 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13097 | std::move (location), NULL, |
e1e01040 PA |
13098 | std::move (cond_string), |
13099 | std::move (extra_string), | |
e7e0cddf | 13100 | type_wanted, disposition, |
983af33b | 13101 | thread, task, ignore_count, ops, |
44f238bb | 13102 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13103 | canonical->special_display); |
13104 | /* Given that its possible to have multiple markers with | |
13105 | the same string id, if the user is creating a static | |
13106 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13107 | store the sals index, so that breakpoint_re_set can | |
13108 | try to match up which of the newly found markers | |
13109 | corresponds to this one */ | |
13110 | tp->static_trace_marker_id_idx = i; | |
13111 | ||
b270e6f9 | 13112 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13113 | } |
13114 | } | |
13115 | ||
6c5b2ebe | 13116 | static std::vector<symtab_and_line> |
f00aae0f KS |
13117 | strace_marker_decode_location (struct breakpoint *b, |
13118 | const struct event_location *location, | |
6c5b2ebe | 13119 | struct program_space *search_pspace) |
983af33b SDJ |
13120 | { |
13121 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13122 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13123 | |
6c5b2ebe PA |
13124 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13125 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13126 | { |
6c5b2ebe PA |
13127 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13128 | sals.resize (1); | |
13129 | return sals; | |
983af33b SDJ |
13130 | } |
13131 | else | |
5d9310c4 | 13132 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13133 | } |
13134 | ||
13135 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13136 | ||
13137 | static int | |
13138 | strace_marker_p (struct breakpoint *b) | |
13139 | { | |
13140 | return b->ops == &strace_marker_breakpoint_ops; | |
13141 | } | |
13142 | ||
53a5351d | 13143 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13144 | structures. */ |
c906108c SS |
13145 | |
13146 | void | |
fba45db2 | 13147 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13148 | { |
52f0bd74 | 13149 | struct breakpoint *b; |
c906108c | 13150 | |
8a3fe4f8 | 13151 | gdb_assert (bpt != NULL); |
c906108c | 13152 | |
4a64f543 MS |
13153 | /* Has this bp already been deleted? This can happen because |
13154 | multiple lists can hold pointers to bp's. bpstat lists are | |
13155 | especial culprits. | |
13156 | ||
13157 | One example of this happening is a watchpoint's scope bp. When | |
13158 | the scope bp triggers, we notice that the watchpoint is out of | |
13159 | scope, and delete it. We also delete its scope bp. But the | |
13160 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13161 | That bpstat is then checked for auto-deleting bp's, which are | |
13162 | deleted. | |
13163 | ||
13164 | A real solution to this problem might involve reference counts in | |
13165 | bp's, and/or giving them pointers back to their referencing | |
13166 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13167 | storage when no more references were extent. A cheaper bandaid | |
13168 | was chosen. */ | |
c906108c SS |
13169 | if (bpt->type == bp_none) |
13170 | return; | |
13171 | ||
4a64f543 MS |
13172 | /* At least avoid this stale reference until the reference counting |
13173 | of breakpoints gets resolved. */ | |
d0fb5eae | 13174 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13175 | { |
d0fb5eae | 13176 | struct breakpoint *related; |
3a5c3e22 | 13177 | struct watchpoint *w; |
d0fb5eae JK |
13178 | |
13179 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13180 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13181 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13182 | w = (struct watchpoint *) bpt; |
13183 | else | |
13184 | w = NULL; | |
13185 | if (w != NULL) | |
13186 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13187 | |
13188 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13189 | for (related = bpt; related->related_breakpoint != bpt; | |
13190 | related = related->related_breakpoint); | |
13191 | related->related_breakpoint = bpt->related_breakpoint; | |
13192 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13193 | } |
13194 | ||
a9634178 TJB |
13195 | /* watch_command_1 creates a watchpoint but only sets its number if |
13196 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13197 | a problem in that process, we'll be asked to delete the half-created | |
13198 | watchpoint. In that case, don't announce the deletion. */ | |
13199 | if (bpt->number) | |
76727919 | 13200 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13201 | |
c906108c SS |
13202 | if (breakpoint_chain == bpt) |
13203 | breakpoint_chain = bpt->next; | |
13204 | ||
c906108c SS |
13205 | ALL_BREAKPOINTS (b) |
13206 | if (b->next == bpt) | |
c5aa993b JM |
13207 | { |
13208 | b->next = bpt->next; | |
13209 | break; | |
13210 | } | |
c906108c | 13211 | |
f431efe5 PA |
13212 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13213 | been freed. */ | |
13214 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13215 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13216 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13217 | commands are associated with the bpstat; if we remove it here, | |
13218 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13219 | event-top.c won't do anything, and temporary breakpoints with | |
13220 | commands won't work. */ | |
13221 | ||
13222 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13223 | ||
4a64f543 MS |
13224 | /* Now that breakpoint is removed from breakpoint list, update the |
13225 | global location list. This will remove locations that used to | |
13226 | belong to this breakpoint. Do this before freeing the breakpoint | |
13227 | itself, since remove_breakpoint looks at location's owner. It | |
13228 | might be better design to have location completely | |
13229 | self-contained, but it's not the case now. */ | |
44702360 | 13230 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13231 | |
4a64f543 MS |
13232 | /* On the chance that someone will soon try again to delete this |
13233 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13234 | bpt->type = bp_none; |
4d01a485 | 13235 | delete bpt; |
c906108c SS |
13236 | } |
13237 | ||
51be5b68 PA |
13238 | /* Iterator function to call a user-provided callback function once |
13239 | for each of B and its related breakpoints. */ | |
13240 | ||
13241 | static void | |
13242 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13243 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13244 | { |
13245 | struct breakpoint *related; | |
13246 | ||
13247 | related = b; | |
13248 | do | |
13249 | { | |
13250 | struct breakpoint *next; | |
13251 | ||
13252 | /* FUNCTION may delete RELATED. */ | |
13253 | next = related->related_breakpoint; | |
13254 | ||
13255 | if (next == related) | |
13256 | { | |
13257 | /* RELATED is the last ring entry. */ | |
48649e1b | 13258 | function (related); |
51be5b68 PA |
13259 | |
13260 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13261 | B. There's nothing left to do anyway, so just break | |
13262 | out. */ | |
13263 | break; | |
13264 | } | |
13265 | else | |
48649e1b | 13266 | function (related); |
51be5b68 PA |
13267 | |
13268 | related = next; | |
13269 | } | |
13270 | while (related != b); | |
13271 | } | |
95a42b64 | 13272 | |
4495129a | 13273 | static void |
981a3fb3 | 13274 | delete_command (const char *arg, int from_tty) |
c906108c | 13275 | { |
35df4500 | 13276 | struct breakpoint *b, *b_tmp; |
c906108c | 13277 | |
ea9365bb TT |
13278 | dont_repeat (); |
13279 | ||
c906108c SS |
13280 | if (arg == 0) |
13281 | { | |
13282 | int breaks_to_delete = 0; | |
13283 | ||
46c6471b PA |
13284 | /* Delete all breakpoints if no argument. Do not delete |
13285 | internal breakpoints, these have to be deleted with an | |
13286 | explicit breakpoint number argument. */ | |
c5aa993b | 13287 | ALL_BREAKPOINTS (b) |
46c6471b | 13288 | if (user_breakpoint_p (b)) |
973d738b DJ |
13289 | { |
13290 | breaks_to_delete = 1; | |
13291 | break; | |
13292 | } | |
c906108c SS |
13293 | |
13294 | /* Ask user only if there are some breakpoints to delete. */ | |
13295 | if (!from_tty | |
e2e0b3e5 | 13296 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13297 | { |
35df4500 | 13298 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13299 | if (user_breakpoint_p (b)) |
c5aa993b | 13300 | delete_breakpoint (b); |
c906108c SS |
13301 | } |
13302 | } | |
13303 | else | |
48649e1b TT |
13304 | map_breakpoint_numbers |
13305 | (arg, [&] (breakpoint *b) | |
13306 | { | |
13307 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13308 | }); | |
c906108c SS |
13309 | } |
13310 | ||
c2f4122d PA |
13311 | /* Return true if all locations of B bound to PSPACE are pending. If |
13312 | PSPACE is NULL, all locations of all program spaces are | |
13313 | considered. */ | |
13314 | ||
0d381245 | 13315 | static int |
c2f4122d | 13316 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13317 | { |
c2f4122d PA |
13318 | struct bp_location *loc; |
13319 | ||
13320 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13321 | if ((pspace == NULL | |
13322 | || loc->pspace == pspace) | |
13323 | && !loc->shlib_disabled | |
8645ff69 | 13324 | && !loc->pspace->executing_startup) |
0d381245 VP |
13325 | return 0; |
13326 | return 1; | |
fe3f5fa8 VP |
13327 | } |
13328 | ||
776592bf DE |
13329 | /* Subroutine of update_breakpoint_locations to simplify it. |
13330 | Return non-zero if multiple fns in list LOC have the same name. | |
13331 | Null names are ignored. */ | |
13332 | ||
13333 | static int | |
13334 | ambiguous_names_p (struct bp_location *loc) | |
13335 | { | |
13336 | struct bp_location *l; | |
459a2e4c TT |
13337 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13338 | xcalloc, xfree); | |
776592bf DE |
13339 | |
13340 | for (l = loc; l != NULL; l = l->next) | |
13341 | { | |
13342 | const char **slot; | |
13343 | const char *name = l->function_name; | |
13344 | ||
13345 | /* Allow for some names to be NULL, ignore them. */ | |
13346 | if (name == NULL) | |
13347 | continue; | |
13348 | ||
13349 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13350 | INSERT); | |
4a64f543 MS |
13351 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13352 | returns NULL. */ | |
776592bf DE |
13353 | if (*slot != NULL) |
13354 | { | |
13355 | htab_delete (htab); | |
13356 | return 1; | |
13357 | } | |
13358 | *slot = name; | |
13359 | } | |
13360 | ||
13361 | htab_delete (htab); | |
13362 | return 0; | |
13363 | } | |
13364 | ||
0fb4aa4b PA |
13365 | /* When symbols change, it probably means the sources changed as well, |
13366 | and it might mean the static tracepoint markers are no longer at | |
13367 | the same address or line numbers they used to be at last we | |
13368 | checked. Losing your static tracepoints whenever you rebuild is | |
13369 | undesirable. This function tries to resync/rematch gdb static | |
13370 | tracepoints with the markers on the target, for static tracepoints | |
13371 | that have not been set by marker id. Static tracepoint that have | |
13372 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13373 | The heuristic is: | |
13374 | ||
13375 | 1) For a tracepoint set at a specific address, look for a marker at | |
13376 | the old PC. If one is found there, assume to be the same marker. | |
13377 | If the name / string id of the marker found is different from the | |
13378 | previous known name, assume that means the user renamed the marker | |
13379 | in the sources, and output a warning. | |
13380 | ||
13381 | 2) For a tracepoint set at a given line number, look for a marker | |
13382 | at the new address of the old line number. If one is found there, | |
13383 | assume to be the same marker. If the name / string id of the | |
13384 | marker found is different from the previous known name, assume that | |
13385 | means the user renamed the marker in the sources, and output a | |
13386 | warning. | |
13387 | ||
13388 | 3) If a marker is no longer found at the same address or line, it | |
13389 | may mean the marker no longer exists. But it may also just mean | |
13390 | the code changed a bit. Maybe the user added a few lines of code | |
13391 | that made the marker move up or down (in line number terms). Ask | |
13392 | the target for info about the marker with the string id as we knew | |
13393 | it. If found, update line number and address in the matching | |
13394 | static tracepoint. This will get confused if there's more than one | |
13395 | marker with the same ID (possible in UST, although unadvised | |
13396 | precisely because it confuses tools). */ | |
13397 | ||
13398 | static struct symtab_and_line | |
13399 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13400 | { | |
d9b3f62e | 13401 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13402 | struct static_tracepoint_marker marker; |
13403 | CORE_ADDR pc; | |
0fb4aa4b PA |
13404 | |
13405 | pc = sal.pc; | |
13406 | if (sal.line) | |
13407 | find_line_pc (sal.symtab, sal.line, &pc); | |
13408 | ||
13409 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13410 | { | |
5d9310c4 | 13411 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13412 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13413 | b->number, tp->static_trace_marker_id.c_str (), |
13414 | marker.str_id.c_str ()); | |
0fb4aa4b | 13415 | |
5d9310c4 | 13416 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13417 | |
13418 | return sal; | |
13419 | } | |
13420 | ||
13421 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13422 | by string ID. */ | |
13423 | if (!sal.explicit_pc | |
13424 | && sal.line != 0 | |
13425 | && sal.symtab != NULL | |
5d9310c4 | 13426 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13427 | { |
5d9310c4 SM |
13428 | std::vector<static_tracepoint_marker> markers |
13429 | = target_static_tracepoint_markers_by_strid | |
13430 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13431 | |
5d9310c4 | 13432 | if (!markers.empty ()) |
0fb4aa4b | 13433 | { |
0fb4aa4b | 13434 | struct symbol *sym; |
80e1d417 | 13435 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13436 | struct ui_out *uiout = current_uiout; |
67994074 | 13437 | struct explicit_location explicit_loc; |
0fb4aa4b | 13438 | |
5d9310c4 | 13439 | tpmarker = &markers[0]; |
0fb4aa4b | 13440 | |
5d9310c4 | 13441 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13442 | |
13443 | warning (_("marker for static tracepoint %d (%s) not " | |
13444 | "found at previous line number"), | |
5d9310c4 | 13445 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13446 | |
51abb421 | 13447 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13448 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13449 | uiout->text ("Now in "); |
0fb4aa4b PA |
13450 | if (sym) |
13451 | { | |
112e8700 SM |
13452 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13453 | uiout->text (" at "); | |
0fb4aa4b | 13454 | } |
112e8700 | 13455 | uiout->field_string ("file", |
05cba821 | 13456 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13457 | uiout->text (":"); |
0fb4aa4b | 13458 | |
112e8700 | 13459 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13460 | { |
0b0865da | 13461 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13462 | |
112e8700 | 13463 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13464 | } |
13465 | ||
112e8700 SM |
13466 | uiout->field_int ("line", sal2.line); |
13467 | uiout->text ("\n"); | |
0fb4aa4b | 13468 | |
80e1d417 | 13469 | b->loc->line_number = sal2.line; |
2f202fde | 13470 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13471 | |
d28cd78a | 13472 | b->location.reset (NULL); |
67994074 KS |
13473 | initialize_explicit_location (&explicit_loc); |
13474 | explicit_loc.source_filename | |
00e52e53 | 13475 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13476 | explicit_loc.line_offset.offset = b->loc->line_number; |
13477 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13478 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13479 | |
13480 | /* Might be nice to check if function changed, and warn if | |
13481 | so. */ | |
0fb4aa4b PA |
13482 | } |
13483 | } | |
13484 | return sal; | |
13485 | } | |
13486 | ||
8d3788bd VP |
13487 | /* Returns 1 iff locations A and B are sufficiently same that |
13488 | we don't need to report breakpoint as changed. */ | |
13489 | ||
13490 | static int | |
13491 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13492 | { | |
13493 | while (a && b) | |
13494 | { | |
13495 | if (a->address != b->address) | |
13496 | return 0; | |
13497 | ||
13498 | if (a->shlib_disabled != b->shlib_disabled) | |
13499 | return 0; | |
13500 | ||
13501 | if (a->enabled != b->enabled) | |
13502 | return 0; | |
13503 | ||
13504 | a = a->next; | |
13505 | b = b->next; | |
13506 | } | |
13507 | ||
13508 | if ((a == NULL) != (b == NULL)) | |
13509 | return 0; | |
13510 | ||
13511 | return 1; | |
13512 | } | |
13513 | ||
c2f4122d PA |
13514 | /* Split all locations of B that are bound to PSPACE out of B's |
13515 | location list to a separate list and return that list's head. If | |
13516 | PSPACE is NULL, hoist out all locations of B. */ | |
13517 | ||
13518 | static struct bp_location * | |
13519 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13520 | { | |
13521 | struct bp_location head; | |
13522 | struct bp_location *i = b->loc; | |
13523 | struct bp_location **i_link = &b->loc; | |
13524 | struct bp_location *hoisted = &head; | |
13525 | ||
13526 | if (pspace == NULL) | |
13527 | { | |
13528 | i = b->loc; | |
13529 | b->loc = NULL; | |
13530 | return i; | |
13531 | } | |
13532 | ||
13533 | head.next = NULL; | |
13534 | ||
13535 | while (i != NULL) | |
13536 | { | |
13537 | if (i->pspace == pspace) | |
13538 | { | |
13539 | *i_link = i->next; | |
13540 | i->next = NULL; | |
13541 | hoisted->next = i; | |
13542 | hoisted = i; | |
13543 | } | |
13544 | else | |
13545 | i_link = &i->next; | |
13546 | i = *i_link; | |
13547 | } | |
13548 | ||
13549 | return head.next; | |
13550 | } | |
13551 | ||
13552 | /* Create new breakpoint locations for B (a hardware or software | |
13553 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13554 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13555 | FILTER_PSPACE. Locations of other program spaces are left | |
13556 | untouched. */ | |
f1310107 | 13557 | |
0e30163f | 13558 | void |
0d381245 | 13559 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13560 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13561 | gdb::array_view<const symtab_and_line> sals, |
13562 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13563 | { |
c2f4122d | 13564 | struct bp_location *existing_locations; |
0d381245 | 13565 | |
6c5b2ebe | 13566 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13567 | { |
13568 | /* Ranged breakpoints have only one start location and one end | |
13569 | location. */ | |
13570 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13571 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13572 | "multiple locations found\n"), | |
13573 | b->number); | |
13574 | return; | |
13575 | } | |
f1310107 | 13576 | |
4a64f543 MS |
13577 | /* If there's no new locations, and all existing locations are |
13578 | pending, don't do anything. This optimizes the common case where | |
13579 | all locations are in the same shared library, that was unloaded. | |
13580 | We'd like to retain the location, so that when the library is | |
13581 | loaded again, we don't loose the enabled/disabled status of the | |
13582 | individual locations. */ | |
6c5b2ebe | 13583 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13584 | return; |
13585 | ||
c2f4122d | 13586 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13587 | |
6c5b2ebe | 13588 | for (const auto &sal : sals) |
fe3f5fa8 | 13589 | { |
f8eba3c6 TT |
13590 | struct bp_location *new_loc; |
13591 | ||
6c5b2ebe | 13592 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13593 | |
6c5b2ebe | 13594 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13595 | |
0d381245 VP |
13596 | /* Reparse conditions, they might contain references to the |
13597 | old symtab. */ | |
13598 | if (b->cond_string != NULL) | |
13599 | { | |
bbc13ae3 | 13600 | const char *s; |
fe3f5fa8 | 13601 | |
0d381245 | 13602 | s = b->cond_string; |
492d29ea | 13603 | TRY |
0d381245 | 13604 | { |
6c5b2ebe PA |
13605 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13606 | block_for_pc (sal.pc), | |
0d381245 VP |
13607 | 0); |
13608 | } | |
492d29ea | 13609 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13610 | { |
3e43a32a MS |
13611 | warning (_("failed to reevaluate condition " |
13612 | "for breakpoint %d: %s"), | |
0d381245 VP |
13613 | b->number, e.message); |
13614 | new_loc->enabled = 0; | |
13615 | } | |
492d29ea | 13616 | END_CATCH |
0d381245 | 13617 | } |
fe3f5fa8 | 13618 | |
6c5b2ebe | 13619 | if (!sals_end.empty ()) |
f1310107 | 13620 | { |
6c5b2ebe | 13621 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13622 | |
6c5b2ebe | 13623 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13624 | } |
0d381245 | 13625 | } |
fe3f5fa8 | 13626 | |
4a64f543 MS |
13627 | /* If possible, carry over 'disable' status from existing |
13628 | breakpoints. */ | |
0d381245 VP |
13629 | { |
13630 | struct bp_location *e = existing_locations; | |
776592bf DE |
13631 | /* If there are multiple breakpoints with the same function name, |
13632 | e.g. for inline functions, comparing function names won't work. | |
13633 | Instead compare pc addresses; this is just a heuristic as things | |
13634 | may have moved, but in practice it gives the correct answer | |
13635 | often enough until a better solution is found. */ | |
13636 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13637 | ||
0d381245 VP |
13638 | for (; e; e = e->next) |
13639 | { | |
13640 | if (!e->enabled && e->function_name) | |
13641 | { | |
13642 | struct bp_location *l = b->loc; | |
776592bf DE |
13643 | if (have_ambiguous_names) |
13644 | { | |
13645 | for (; l; l = l->next) | |
f1310107 | 13646 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13647 | { |
13648 | l->enabled = 0; | |
13649 | break; | |
13650 | } | |
13651 | } | |
13652 | else | |
13653 | { | |
13654 | for (; l; l = l->next) | |
13655 | if (l->function_name | |
13656 | && strcmp (e->function_name, l->function_name) == 0) | |
13657 | { | |
13658 | l->enabled = 0; | |
13659 | break; | |
13660 | } | |
13661 | } | |
0d381245 VP |
13662 | } |
13663 | } | |
13664 | } | |
fe3f5fa8 | 13665 | |
8d3788bd | 13666 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13667 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13668 | } |
13669 | ||
f00aae0f | 13670 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13671 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13672 | ||
6c5b2ebe | 13673 | static std::vector<symtab_and_line> |
f00aae0f | 13674 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13675 | struct program_space *search_pspace, int *found) |
ef23e705 | 13676 | { |
492d29ea | 13677 | struct gdb_exception exception = exception_none; |
ef23e705 | 13678 | |
983af33b | 13679 | gdb_assert (b->ops != NULL); |
ef23e705 | 13680 | |
6c5b2ebe PA |
13681 | std::vector<symtab_and_line> sals; |
13682 | ||
492d29ea | 13683 | TRY |
ef23e705 | 13684 | { |
6c5b2ebe | 13685 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13686 | } |
492d29ea | 13687 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13688 | { |
13689 | int not_found_and_ok = 0; | |
492d29ea PA |
13690 | |
13691 | exception = e; | |
13692 | ||
ef23e705 TJB |
13693 | /* For pending breakpoints, it's expected that parsing will |
13694 | fail until the right shared library is loaded. User has | |
13695 | already told to create pending breakpoints and don't need | |
13696 | extra messages. If breakpoint is in bp_shlib_disabled | |
13697 | state, then user already saw the message about that | |
13698 | breakpoint being disabled, and don't want to see more | |
13699 | errors. */ | |
58438ac1 | 13700 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13701 | && (b->condition_not_parsed |
13702 | || (b->loc != NULL | |
13703 | && search_pspace != NULL | |
13704 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13705 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13706 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13707 | || b->enable_state == bp_disabled)) |
13708 | not_found_and_ok = 1; | |
13709 | ||
13710 | if (!not_found_and_ok) | |
13711 | { | |
13712 | /* We surely don't want to warn about the same breakpoint | |
13713 | 10 times. One solution, implemented here, is disable | |
13714 | the breakpoint on error. Another solution would be to | |
13715 | have separate 'warning emitted' flag. Since this | |
13716 | happens only when a binary has changed, I don't know | |
13717 | which approach is better. */ | |
13718 | b->enable_state = bp_disabled; | |
13719 | throw_exception (e); | |
13720 | } | |
13721 | } | |
492d29ea | 13722 | END_CATCH |
ef23e705 | 13723 | |
492d29ea | 13724 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13725 | { |
6c5b2ebe PA |
13726 | for (auto &sal : sals) |
13727 | resolve_sal_pc (&sal); | |
f00aae0f | 13728 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13729 | { |
ed1d1739 KS |
13730 | char *cond_string, *extra_string; |
13731 | int thread, task; | |
ef23e705 | 13732 | |
6c5b2ebe | 13733 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13734 | &cond_string, &thread, &task, |
13735 | &extra_string); | |
f00aae0f | 13736 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13737 | if (cond_string) |
13738 | b->cond_string = cond_string; | |
13739 | b->thread = thread; | |
13740 | b->task = task; | |
e7e0cddf | 13741 | if (extra_string) |
f00aae0f KS |
13742 | { |
13743 | xfree (b->extra_string); | |
13744 | b->extra_string = extra_string; | |
13745 | } | |
ef23e705 TJB |
13746 | b->condition_not_parsed = 0; |
13747 | } | |
13748 | ||
983af33b | 13749 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13750 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13751 | |
58438ac1 TT |
13752 | *found = 1; |
13753 | } | |
13754 | else | |
13755 | *found = 0; | |
ef23e705 TJB |
13756 | |
13757 | return sals; | |
13758 | } | |
13759 | ||
348d480f PA |
13760 | /* The default re_set method, for typical hardware or software |
13761 | breakpoints. Reevaluate the breakpoint and recreate its | |
13762 | locations. */ | |
13763 | ||
13764 | static void | |
28010a5d | 13765 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13766 | { |
c2f4122d | 13767 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13768 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13769 | |
6c5b2ebe PA |
13770 | int found; |
13771 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13772 | filter_pspace, &found); | |
ef23e705 | 13773 | if (found) |
6c5b2ebe | 13774 | expanded = std::move (sals); |
ef23e705 | 13775 | |
f00aae0f | 13776 | if (b->location_range_end != NULL) |
f1310107 | 13777 | { |
6c5b2ebe PA |
13778 | std::vector<symtab_and_line> sals_end |
13779 | = location_to_sals (b, b->location_range_end.get (), | |
13780 | filter_pspace, &found); | |
f1310107 | 13781 | if (found) |
6c5b2ebe | 13782 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13783 | } |
13784 | ||
c2f4122d | 13785 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13786 | } |
13787 | ||
983af33b SDJ |
13788 | /* Default method for creating SALs from an address string. It basically |
13789 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13790 | ||
13791 | static void | |
f00aae0f KS |
13792 | create_sals_from_location_default (const struct event_location *location, |
13793 | struct linespec_result *canonical, | |
13794 | enum bptype type_wanted) | |
983af33b | 13795 | { |
f00aae0f | 13796 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13797 | } |
13798 | ||
13799 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13800 | function for the `create_breakpoints_sal' method of | |
13801 | breakpoint_ops. */ | |
13802 | ||
13803 | static void | |
13804 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13805 | struct linespec_result *canonical, | |
e1e01040 PA |
13806 | gdb::unique_xmalloc_ptr<char> cond_string, |
13807 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13808 | enum bptype type_wanted, |
13809 | enum bpdisp disposition, | |
13810 | int thread, | |
13811 | int task, int ignore_count, | |
13812 | const struct breakpoint_ops *ops, | |
13813 | int from_tty, int enabled, | |
44f238bb | 13814 | int internal, unsigned flags) |
983af33b | 13815 | { |
e1e01040 PA |
13816 | create_breakpoints_sal (gdbarch, canonical, |
13817 | std::move (cond_string), | |
13818 | std::move (extra_string), | |
983af33b SDJ |
13819 | type_wanted, disposition, |
13820 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13821 | enabled, internal, flags); |
983af33b SDJ |
13822 | } |
13823 | ||
13824 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13825 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13826 | |
6c5b2ebe | 13827 | static std::vector<symtab_and_line> |
f00aae0f KS |
13828 | decode_location_default (struct breakpoint *b, |
13829 | const struct event_location *location, | |
6c5b2ebe | 13830 | struct program_space *search_pspace) |
983af33b SDJ |
13831 | { |
13832 | struct linespec_result canonical; | |
13833 | ||
c2f4122d | 13834 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13835 | (struct symtab *) NULL, 0, |
13836 | &canonical, multiple_symbols_all, | |
13837 | b->filter); | |
13838 | ||
13839 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13840 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13841 | |
6c5b2ebe | 13842 | if (!canonical.lsals.empty ()) |
983af33b | 13843 | { |
6c5b2ebe PA |
13844 | const linespec_sals &lsal = canonical.lsals[0]; |
13845 | return std::move (lsal.sals); | |
983af33b | 13846 | } |
6c5b2ebe | 13847 | return {}; |
983af33b SDJ |
13848 | } |
13849 | ||
bf469271 | 13850 | /* Reset a breakpoint. */ |
c906108c | 13851 | |
bf469271 PA |
13852 | static void |
13853 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13854 | { |
fdf44873 TT |
13855 | input_radix = b->input_radix; |
13856 | set_language (b->language); | |
c906108c | 13857 | |
348d480f | 13858 | b->ops->re_set (b); |
c906108c SS |
13859 | } |
13860 | ||
c2f4122d PA |
13861 | /* Re-set breakpoint locations for the current program space. |
13862 | Locations bound to other program spaces are left untouched. */ | |
13863 | ||
c906108c | 13864 | void |
69de3c6a | 13865 | breakpoint_re_set (void) |
c906108c | 13866 | { |
35df4500 | 13867 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13868 | |
c5aa993b | 13869 | { |
fdf44873 TT |
13870 | scoped_restore_current_language save_language; |
13871 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13872 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13873 | |
8e817061 JB |
13874 | /* breakpoint_re_set_one sets the current_language to the language |
13875 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13876 | before re-evaluating the breakpoint's location. This change can | |
13877 | unfortunately get undone by accident if the language_mode is set | |
13878 | to auto, and we either switch frames, or more likely in this context, | |
13879 | we select the current frame. | |
13880 | ||
13881 | We prevent this by temporarily turning the language_mode to | |
13882 | language_mode_manual. We restore it once all breakpoints | |
13883 | have been reset. */ | |
13884 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13885 | language_mode = language_mode_manual; | |
13886 | ||
5ed8105e PA |
13887 | /* Note: we must not try to insert locations until after all |
13888 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13889 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13890 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13891 | |
5ed8105e PA |
13892 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13893 | { | |
bf469271 PA |
13894 | TRY |
13895 | { | |
13896 | breakpoint_re_set_one (b); | |
13897 | } | |
13898 | CATCH (ex, RETURN_MASK_ALL) | |
13899 | { | |
13900 | exception_fprintf (gdb_stderr, ex, | |
13901 | "Error in re-setting breakpoint %d: ", | |
13902 | b->number); | |
13903 | } | |
13904 | END_CATCH | |
5ed8105e | 13905 | } |
5ed8105e PA |
13906 | |
13907 | jit_breakpoint_re_set (); | |
13908 | } | |
6c95b8df | 13909 | |
af02033e PP |
13910 | create_overlay_event_breakpoint (); |
13911 | create_longjmp_master_breakpoint (); | |
13912 | create_std_terminate_master_breakpoint (); | |
186c406b | 13913 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13914 | |
13915 | /* Now we can insert. */ | |
13916 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13917 | } |
13918 | \f | |
c906108c SS |
13919 | /* Reset the thread number of this breakpoint: |
13920 | ||
13921 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13922 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13923 | void |
fba45db2 | 13924 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13925 | { |
13926 | if (b->thread != -1) | |
13927 | { | |
00431a78 | 13928 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13929 | |
13930 | /* We're being called after following a fork. The new fork is | |
13931 | selected as current, and unless this was a vfork will have a | |
13932 | different program space from the original thread. Reset that | |
13933 | as well. */ | |
13934 | b->loc->pspace = current_program_space; | |
c906108c SS |
13935 | } |
13936 | } | |
13937 | ||
03ac34d5 MS |
13938 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13939 | If from_tty is nonzero, it prints a message to that effect, | |
13940 | which ends with a period (no newline). */ | |
13941 | ||
c906108c | 13942 | void |
fba45db2 | 13943 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13944 | { |
52f0bd74 | 13945 | struct breakpoint *b; |
c906108c SS |
13946 | |
13947 | if (count < 0) | |
13948 | count = 0; | |
13949 | ||
13950 | ALL_BREAKPOINTS (b) | |
13951 | if (b->number == bptnum) | |
c5aa993b | 13952 | { |
d77f58be SS |
13953 | if (is_tracepoint (b)) |
13954 | { | |
13955 | if (from_tty && count != 0) | |
13956 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13957 | bptnum); | |
13958 | return; | |
13959 | } | |
13960 | ||
c5aa993b | 13961 | b->ignore_count = count; |
221ea385 KS |
13962 | if (from_tty) |
13963 | { | |
13964 | if (count == 0) | |
3e43a32a MS |
13965 | printf_filtered (_("Will stop next time " |
13966 | "breakpoint %d is reached."), | |
221ea385 KS |
13967 | bptnum); |
13968 | else if (count == 1) | |
a3f17187 | 13969 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13970 | bptnum); |
13971 | else | |
3e43a32a MS |
13972 | printf_filtered (_("Will ignore next %d " |
13973 | "crossings of breakpoint %d."), | |
221ea385 KS |
13974 | count, bptnum); |
13975 | } | |
76727919 | 13976 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13977 | return; |
13978 | } | |
c906108c | 13979 | |
8a3fe4f8 | 13980 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13981 | } |
13982 | ||
c906108c SS |
13983 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13984 | ||
13985 | static void | |
0b39b52e | 13986 | ignore_command (const char *args, int from_tty) |
c906108c | 13987 | { |
0b39b52e | 13988 | const char *p = args; |
52f0bd74 | 13989 | int num; |
c906108c SS |
13990 | |
13991 | if (p == 0) | |
e2e0b3e5 | 13992 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13993 | |
c906108c | 13994 | num = get_number (&p); |
5c44784c | 13995 | if (num == 0) |
8a3fe4f8 | 13996 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13997 | if (*p == 0) |
8a3fe4f8 | 13998 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13999 | |
14000 | set_ignore_count (num, | |
14001 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14002 | from_tty); | |
221ea385 KS |
14003 | if (from_tty) |
14004 | printf_filtered ("\n"); | |
c906108c SS |
14005 | } |
14006 | \f | |
d0fe4701 XR |
14007 | |
14008 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14009 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14010 | |
14011 | static void | |
d0fe4701 XR |
14012 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14013 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14014 | { |
d0fe4701 XR |
14015 | if (bp_num_range.first == 0) |
14016 | { | |
14017 | warning (_("bad breakpoint number at or near '%d'"), | |
14018 | bp_num_range.first); | |
14019 | } | |
14020 | else | |
c906108c | 14021 | { |
d0fe4701 | 14022 | struct breakpoint *b, *tmp; |
197f0a60 | 14023 | |
d0fe4701 | 14024 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14025 | { |
d0fe4701 XR |
14026 | bool match = false; |
14027 | ||
5c44784c | 14028 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14029 | if (b->number == i) |
5c44784c | 14030 | { |
bfd28288 | 14031 | match = true; |
48649e1b | 14032 | function (b); |
11cf8741 | 14033 | break; |
5c44784c | 14034 | } |
bfd28288 | 14035 | if (!match) |
d0fe4701 | 14036 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14037 | } |
c906108c SS |
14038 | } |
14039 | } | |
14040 | ||
d0fe4701 XR |
14041 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14042 | ARGS. */ | |
14043 | ||
14044 | static void | |
14045 | map_breakpoint_numbers (const char *args, | |
14046 | gdb::function_view<void (breakpoint *)> function) | |
14047 | { | |
14048 | if (args == NULL || *args == '\0') | |
14049 | error_no_arg (_("one or more breakpoint numbers")); | |
14050 | ||
14051 | number_or_range_parser parser (args); | |
14052 | ||
14053 | while (!parser.finished ()) | |
14054 | { | |
14055 | int num = parser.get_number (); | |
14056 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14057 | } | |
14058 | } | |
14059 | ||
14060 | /* Return the breakpoint location structure corresponding to the | |
14061 | BP_NUM and LOC_NUM values. */ | |
14062 | ||
0d381245 | 14063 | static struct bp_location * |
d0fe4701 | 14064 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14065 | { |
0d381245 | 14066 | struct breakpoint *b; |
0d381245 VP |
14067 | |
14068 | ALL_BREAKPOINTS (b) | |
14069 | if (b->number == bp_num) | |
14070 | { | |
14071 | break; | |
14072 | } | |
14073 | ||
14074 | if (!b || b->number != bp_num) | |
d0fe4701 | 14075 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14076 | |
0d381245 | 14077 | if (loc_num == 0) |
d0fe4701 | 14078 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14079 | |
d0fe4701 XR |
14080 | int n = 0; |
14081 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14082 | if (++n == loc_num) | |
14083 | return loc; | |
14084 | ||
14085 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14086 | } |
14087 | ||
95e95a6d PA |
14088 | /* Modes of operation for extract_bp_num. */ |
14089 | enum class extract_bp_kind | |
14090 | { | |
14091 | /* Extracting a breakpoint number. */ | |
14092 | bp, | |
14093 | ||
14094 | /* Extracting a location number. */ | |
14095 | loc, | |
14096 | }; | |
14097 | ||
14098 | /* Extract a breakpoint or location number (as determined by KIND) | |
14099 | from the string starting at START. TRAILER is a character which | |
14100 | can be found after the number. If you don't want a trailer, use | |
14101 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14102 | string. This always returns a positive integer. */ | |
14103 | ||
14104 | static int | |
14105 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14106 | int trailer, const char **end_out = NULL) | |
14107 | { | |
14108 | const char *end = start; | |
14109 | int num = get_number_trailer (&end, trailer); | |
14110 | if (num < 0) | |
14111 | error (kind == extract_bp_kind::bp | |
14112 | ? _("Negative breakpoint number '%.*s'") | |
14113 | : _("Negative breakpoint location number '%.*s'"), | |
14114 | int (end - start), start); | |
14115 | if (num == 0) | |
14116 | error (kind == extract_bp_kind::bp | |
14117 | ? _("Bad breakpoint number '%.*s'") | |
14118 | : _("Bad breakpoint location number '%.*s'"), | |
14119 | int (end - start), start); | |
14120 | ||
14121 | if (end_out != NULL) | |
14122 | *end_out = end; | |
14123 | return num; | |
14124 | } | |
14125 | ||
14126 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14127 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14128 | representing the (inclusive) range. The returned pair's elements | |
14129 | are always positive integers. */ | |
14130 | ||
14131 | static std::pair<int, int> | |
14132 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14133 | const std::string &arg, | |
14134 | std::string::size_type arg_offset) | |
14135 | { | |
14136 | std::pair<int, int> range; | |
14137 | const char *bp_loc = &arg[arg_offset]; | |
14138 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14139 | if (dash != std::string::npos) | |
14140 | { | |
14141 | /* bp_loc is a range (x-z). */ | |
14142 | if (arg.length () == dash + 1) | |
14143 | error (kind == extract_bp_kind::bp | |
14144 | ? _("Bad breakpoint number at or near: '%s'") | |
14145 | : _("Bad breakpoint location number at or near: '%s'"), | |
14146 | bp_loc); | |
14147 | ||
14148 | const char *end; | |
14149 | const char *start_first = bp_loc; | |
14150 | const char *start_second = &arg[dash + 1]; | |
14151 | range.first = extract_bp_num (kind, start_first, '-'); | |
14152 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14153 | ||
14154 | if (range.first > range.second) | |
14155 | error (kind == extract_bp_kind::bp | |
14156 | ? _("Inverted breakpoint range at '%.*s'") | |
14157 | : _("Inverted breakpoint location range at '%.*s'"), | |
14158 | int (end - start_first), start_first); | |
14159 | } | |
14160 | else | |
14161 | { | |
14162 | /* bp_loc is a single value. */ | |
14163 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14164 | range.second = range.first; | |
14165 | } | |
14166 | return range; | |
14167 | } | |
14168 | ||
d0fe4701 XR |
14169 | /* Extract the breakpoint/location range specified by ARG. Returns |
14170 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14171 | BP_LOC_RANGE. | |
14172 | ||
14173 | ARG may be in any of the following forms: | |
14174 | ||
14175 | x where 'x' is a breakpoint number. | |
14176 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14177 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14178 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14179 | location number range. | |
14180 | */ | |
14181 | ||
cc638e86 | 14182 | static void |
d0fe4701 XR |
14183 | extract_bp_number_and_location (const std::string &arg, |
14184 | std::pair<int, int> &bp_num_range, | |
14185 | std::pair<int, int> &bp_loc_range) | |
14186 | { | |
14187 | std::string::size_type dot = arg.find ('.'); | |
14188 | ||
14189 | if (dot != std::string::npos) | |
14190 | { | |
14191 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14192 | ||
14193 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14194 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14195 | |
95e95a6d PA |
14196 | bp_num_range.first |
14197 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14198 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14199 | |
95e95a6d PA |
14200 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14201 | arg, dot + 1); | |
d0fe4701 XR |
14202 | } |
14203 | else | |
14204 | { | |
14205 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14206 | |
95e95a6d | 14207 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14208 | bp_loc_range.first = 0; |
14209 | bp_loc_range.second = 0; | |
14210 | } | |
d0fe4701 XR |
14211 | } |
14212 | ||
14213 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14214 | specifies whether to enable or disable. */ | |
14215 | ||
14216 | static void | |
14217 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14218 | { | |
14219 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14220 | if (loc != NULL) | |
14221 | { | |
14222 | if (loc->enabled != enable) | |
14223 | { | |
14224 | loc->enabled = enable; | |
14225 | mark_breakpoint_location_modified (loc); | |
14226 | } | |
14227 | if (target_supports_enable_disable_tracepoint () | |
14228 | && current_trace_status ()->running && loc->owner | |
14229 | && is_tracepoint (loc->owner)) | |
14230 | target_disable_tracepoint (loc); | |
14231 | } | |
14232 | update_global_location_list (UGLL_DONT_INSERT); | |
14233 | } | |
14234 | ||
14235 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14236 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14237 | (inclusive) range of location numbers of that breakpoint to | |
14238 | enable/disable. ENABLE specifies whether to enable or disable the | |
14239 | location. */ | |
14240 | ||
14241 | static void | |
14242 | enable_disable_breakpoint_location_range (int bp_num, | |
14243 | std::pair<int, int> &bp_loc_range, | |
14244 | bool enable) | |
14245 | { | |
14246 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14247 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14248 | } | |
0d381245 | 14249 | |
1900040c MS |
14250 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14251 | If from_tty is nonzero, it prints a message to that effect, | |
14252 | which ends with a period (no newline). */ | |
14253 | ||
c906108c | 14254 | void |
fba45db2 | 14255 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14256 | { |
14257 | /* Never disable a watchpoint scope breakpoint; we want to | |
14258 | hit them when we leave scope so we can delete both the | |
14259 | watchpoint and its scope breakpoint at that time. */ | |
14260 | if (bpt->type == bp_watchpoint_scope) | |
14261 | return; | |
14262 | ||
b5de0fa7 | 14263 | bpt->enable_state = bp_disabled; |
c906108c | 14264 | |
b775012e LM |
14265 | /* Mark breakpoint locations modified. */ |
14266 | mark_breakpoint_modified (bpt); | |
14267 | ||
d248b706 KY |
14268 | if (target_supports_enable_disable_tracepoint () |
14269 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14270 | { | |
14271 | struct bp_location *location; | |
14272 | ||
14273 | for (location = bpt->loc; location; location = location->next) | |
14274 | target_disable_tracepoint (location); | |
14275 | } | |
14276 | ||
44702360 | 14277 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14278 | |
76727919 | 14279 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14280 | } |
14281 | ||
d0fe4701 XR |
14282 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14283 | specified in ARGS. ARGS may be in any of the formats handled by | |
14284 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14285 | or disable the breakpoints/locations. */ | |
14286 | ||
c906108c | 14287 | static void |
d0fe4701 | 14288 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14289 | { |
c906108c | 14290 | if (args == 0) |
46c6471b PA |
14291 | { |
14292 | struct breakpoint *bpt; | |
14293 | ||
14294 | ALL_BREAKPOINTS (bpt) | |
14295 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14296 | { |
14297 | if (enable) | |
14298 | enable_breakpoint (bpt); | |
14299 | else | |
14300 | disable_breakpoint (bpt); | |
14301 | } | |
46c6471b | 14302 | } |
9eaabc75 | 14303 | else |
0d381245 | 14304 | { |
cb791d59 | 14305 | std::string num = extract_arg (&args); |
9eaabc75 | 14306 | |
cb791d59 | 14307 | while (!num.empty ()) |
d248b706 | 14308 | { |
d0fe4701 | 14309 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14310 | |
cc638e86 PA |
14311 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14312 | ||
14313 | if (bp_loc_range.first == bp_loc_range.second | |
14314 | && bp_loc_range.first == 0) | |
d0fe4701 | 14315 | { |
cc638e86 PA |
14316 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14317 | map_breakpoint_number_range (bp_num_range, | |
14318 | enable | |
14319 | ? enable_breakpoint | |
14320 | : disable_breakpoint); | |
14321 | } | |
14322 | else | |
14323 | { | |
14324 | /* Handle breakpoint ids with formats 'x.y' or | |
14325 | 'x.y-z'. */ | |
14326 | enable_disable_breakpoint_location_range | |
14327 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14328 | } |
9eaabc75 | 14329 | num = extract_arg (&args); |
d248b706 | 14330 | } |
0d381245 | 14331 | } |
c906108c SS |
14332 | } |
14333 | ||
d0fe4701 XR |
14334 | /* The disable command disables the specified breakpoints/locations |
14335 | (or all defined breakpoints) so they're no longer effective in | |
14336 | stopping the inferior. ARGS may be in any of the forms defined in | |
14337 | extract_bp_number_and_location. */ | |
14338 | ||
14339 | static void | |
14340 | disable_command (const char *args, int from_tty) | |
14341 | { | |
14342 | enable_disable_command (args, from_tty, false); | |
14343 | } | |
14344 | ||
c906108c | 14345 | static void |
816338b5 SS |
14346 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14347 | int count) | |
c906108c | 14348 | { |
afe38095 | 14349 | int target_resources_ok; |
c906108c SS |
14350 | |
14351 | if (bpt->type == bp_hardware_breakpoint) | |
14352 | { | |
14353 | int i; | |
c5aa993b | 14354 | i = hw_breakpoint_used_count (); |
53a5351d | 14355 | target_resources_ok = |
d92524f1 | 14356 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14357 | i + 1, 0); |
c906108c | 14358 | if (target_resources_ok == 0) |
8a3fe4f8 | 14359 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14360 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14361 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14362 | } |
14363 | ||
cc60f2e3 | 14364 | if (is_watchpoint (bpt)) |
c906108c | 14365 | { |
d07205c2 | 14366 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14367 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14368 | |
492d29ea | 14369 | TRY |
c906108c | 14370 | { |
3a5c3e22 PA |
14371 | struct watchpoint *w = (struct watchpoint *) bpt; |
14372 | ||
1e718ff1 TJB |
14373 | orig_enable_state = bpt->enable_state; |
14374 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14375 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14376 | } |
492d29ea | 14377 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14378 | { |
1e718ff1 | 14379 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14380 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14381 | bpt->number); | |
14382 | return; | |
c5aa993b | 14383 | } |
492d29ea | 14384 | END_CATCH |
c906108c | 14385 | } |
0101ce28 | 14386 | |
b775012e LM |
14387 | bpt->enable_state = bp_enabled; |
14388 | ||
14389 | /* Mark breakpoint locations modified. */ | |
14390 | mark_breakpoint_modified (bpt); | |
14391 | ||
d248b706 KY |
14392 | if (target_supports_enable_disable_tracepoint () |
14393 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14394 | { | |
14395 | struct bp_location *location; | |
14396 | ||
14397 | for (location = bpt->loc; location; location = location->next) | |
14398 | target_enable_tracepoint (location); | |
14399 | } | |
14400 | ||
b4c291bb | 14401 | bpt->disposition = disposition; |
816338b5 | 14402 | bpt->enable_count = count; |
44702360 | 14403 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14404 | |
76727919 | 14405 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14406 | } |
14407 | ||
fe3f5fa8 | 14408 | |
c906108c | 14409 | void |
fba45db2 | 14410 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14411 | { |
816338b5 | 14412 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14413 | } |
14414 | ||
d0fe4701 XR |
14415 | /* The enable command enables the specified breakpoints/locations (or |
14416 | all defined breakpoints) so they once again become (or continue to | |
14417 | be) effective in stopping the inferior. ARGS may be in any of the | |
14418 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14419 | |
c906108c | 14420 | static void |
981a3fb3 | 14421 | enable_command (const char *args, int from_tty) |
c906108c | 14422 | { |
d0fe4701 | 14423 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14424 | } |
14425 | ||
c906108c | 14426 | static void |
4495129a | 14427 | enable_once_command (const char *args, int from_tty) |
c906108c | 14428 | { |
48649e1b TT |
14429 | map_breakpoint_numbers |
14430 | (args, [&] (breakpoint *b) | |
14431 | { | |
14432 | iterate_over_related_breakpoints | |
14433 | (b, [&] (breakpoint *bpt) | |
14434 | { | |
14435 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14436 | }); | |
14437 | }); | |
816338b5 SS |
14438 | } |
14439 | ||
14440 | static void | |
4495129a | 14441 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14442 | { |
b9d61307 SM |
14443 | int count; |
14444 | ||
14445 | if (args == NULL) | |
14446 | error_no_arg (_("hit count")); | |
14447 | ||
14448 | count = get_number (&args); | |
816338b5 | 14449 | |
48649e1b TT |
14450 | map_breakpoint_numbers |
14451 | (args, [&] (breakpoint *b) | |
14452 | { | |
14453 | iterate_over_related_breakpoints | |
14454 | (b, [&] (breakpoint *bpt) | |
14455 | { | |
14456 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14457 | }); | |
14458 | }); | |
c906108c SS |
14459 | } |
14460 | ||
c906108c | 14461 | static void |
4495129a | 14462 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14463 | { |
48649e1b TT |
14464 | map_breakpoint_numbers |
14465 | (args, [&] (breakpoint *b) | |
14466 | { | |
14467 | iterate_over_related_breakpoints | |
14468 | (b, [&] (breakpoint *bpt) | |
14469 | { | |
14470 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14471 | }); | |
14472 | }); | |
c906108c SS |
14473 | } |
14474 | \f | |
fa8d40ab | 14475 | static void |
981a3fb3 | 14476 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14477 | { |
14478 | } | |
14479 | ||
14480 | static void | |
981a3fb3 | 14481 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14482 | { |
14483 | } | |
14484 | ||
1f3b5d1b PP |
14485 | /* Invalidate last known value of any hardware watchpoint if |
14486 | the memory which that value represents has been written to by | |
14487 | GDB itself. */ | |
14488 | ||
14489 | static void | |
8de0566d YQ |
14490 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14491 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14492 | const bfd_byte *data) |
14493 | { | |
14494 | struct breakpoint *bp; | |
14495 | ||
14496 | ALL_BREAKPOINTS (bp) | |
14497 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14498 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14499 | { |
3a5c3e22 | 14500 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14501 | |
850645cf | 14502 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14503 | { |
14504 | struct bp_location *loc; | |
14505 | ||
14506 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14507 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14508 | && loc->address + loc->length > addr | |
14509 | && addr + len > loc->address) | |
14510 | { | |
3a5c3e22 PA |
14511 | wp->val = NULL; |
14512 | wp->val_valid = 0; | |
14513 | } | |
14514 | } | |
1f3b5d1b PP |
14515 | } |
14516 | } | |
14517 | ||
8181d85f DJ |
14518 | /* Create and insert a breakpoint for software single step. */ |
14519 | ||
14520 | void | |
6c95b8df | 14521 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14522 | const address_space *aspace, |
4a64f543 | 14523 | CORE_ADDR next_pc) |
8181d85f | 14524 | { |
7c16b83e PA |
14525 | struct thread_info *tp = inferior_thread (); |
14526 | struct symtab_and_line sal; | |
14527 | CORE_ADDR pc = next_pc; | |
8181d85f | 14528 | |
34b7e8a6 PA |
14529 | if (tp->control.single_step_breakpoints == NULL) |
14530 | { | |
14531 | tp->control.single_step_breakpoints | |
5d5658a1 | 14532 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14533 | } |
8181d85f | 14534 | |
7c16b83e PA |
14535 | sal = find_pc_line (pc, 0); |
14536 | sal.pc = pc; | |
14537 | sal.section = find_pc_overlay (pc); | |
14538 | sal.explicit_pc = 1; | |
34b7e8a6 | 14539 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14540 | |
7c16b83e | 14541 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14542 | } |
14543 | ||
93f9a11f YQ |
14544 | /* Insert single step breakpoints according to the current state. */ |
14545 | ||
14546 | int | |
14547 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14548 | { | |
f5ea389a | 14549 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14550 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14551 | |
f5ea389a | 14552 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14553 | |
a0ff9e1a | 14554 | if (!next_pcs.empty ()) |
93f9a11f | 14555 | { |
f5ea389a | 14556 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14557 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14558 | |
a0ff9e1a | 14559 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14560 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14561 | ||
93f9a11f YQ |
14562 | return 1; |
14563 | } | |
14564 | else | |
14565 | return 0; | |
14566 | } | |
14567 | ||
34b7e8a6 | 14568 | /* See breakpoint.h. */ |
f02253f1 HZ |
14569 | |
14570 | int | |
7c16b83e | 14571 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14572 | const address_space *aspace, |
7c16b83e | 14573 | CORE_ADDR pc) |
1aafd4da | 14574 | { |
7c16b83e | 14575 | struct bp_location *loc; |
1aafd4da | 14576 | |
7c16b83e PA |
14577 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14578 | if (loc->inserted | |
14579 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14580 | return 1; | |
1aafd4da | 14581 | |
7c16b83e | 14582 | return 0; |
ef370185 JB |
14583 | } |
14584 | ||
14585 | /* Check whether a software single-step breakpoint is inserted at | |
14586 | PC. */ | |
14587 | ||
14588 | int | |
accd0bcd | 14589 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14590 | CORE_ADDR pc) |
14591 | { | |
34b7e8a6 PA |
14592 | struct breakpoint *bpt; |
14593 | ||
14594 | ALL_BREAKPOINTS (bpt) | |
14595 | { | |
14596 | if (bpt->type == bp_single_step | |
14597 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14598 | return 1; | |
14599 | } | |
14600 | return 0; | |
1aafd4da UW |
14601 | } |
14602 | ||
1042e4c0 SS |
14603 | /* Tracepoint-specific operations. */ |
14604 | ||
14605 | /* Set tracepoint count to NUM. */ | |
14606 | static void | |
14607 | set_tracepoint_count (int num) | |
14608 | { | |
14609 | tracepoint_count = num; | |
4fa62494 | 14610 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14611 | } |
14612 | ||
70221824 | 14613 | static void |
0b39b52e | 14614 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14615 | { |
55aa24fb | 14616 | struct breakpoint_ops *ops; |
55aa24fb | 14617 | |
ffc2605c TT |
14618 | event_location_up location = string_to_event_location (&arg, |
14619 | current_language); | |
5b56227b | 14620 | if (location != NULL |
ffc2605c | 14621 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14622 | ops = &tracepoint_probe_breakpoint_ops; |
14623 | else | |
14624 | ops = &tracepoint_breakpoint_ops; | |
14625 | ||
558a9d82 | 14626 | create_breakpoint (get_current_arch (), |
ffc2605c | 14627 | location.get (), |
f00aae0f | 14628 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14629 | 0 /* tempflag */, |
14630 | bp_tracepoint /* type_wanted */, | |
14631 | 0 /* Ignore count */, | |
14632 | pending_break_support, | |
14633 | ops, | |
14634 | from_tty, | |
14635 | 1 /* enabled */, | |
14636 | 0 /* internal */, 0); | |
1042e4c0 SS |
14637 | } |
14638 | ||
70221824 | 14639 | static void |
0b39b52e | 14640 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14641 | { |
ffc2605c TT |
14642 | event_location_up location = string_to_event_location (&arg, |
14643 | current_language); | |
558a9d82 | 14644 | create_breakpoint (get_current_arch (), |
ffc2605c | 14645 | location.get (), |
f00aae0f | 14646 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14647 | 0 /* tempflag */, |
14648 | bp_fast_tracepoint /* type_wanted */, | |
14649 | 0 /* Ignore count */, | |
14650 | pending_break_support, | |
14651 | &tracepoint_breakpoint_ops, | |
14652 | from_tty, | |
14653 | 1 /* enabled */, | |
14654 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14655 | } |
14656 | ||
14657 | /* strace command implementation. Creates a static tracepoint. */ | |
14658 | ||
70221824 | 14659 | static void |
0b39b52e | 14660 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14661 | { |
983af33b | 14662 | struct breakpoint_ops *ops; |
ffc2605c | 14663 | event_location_up location; |
983af33b SDJ |
14664 | |
14665 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14666 | or with a normal static tracepoint. */ | |
61012eef | 14667 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14668 | { |
14669 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14670 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14671 | } |
983af33b | 14672 | else |
f00aae0f KS |
14673 | { |
14674 | ops = &tracepoint_breakpoint_ops; | |
14675 | location = string_to_event_location (&arg, current_language); | |
14676 | } | |
983af33b | 14677 | |
558a9d82 | 14678 | create_breakpoint (get_current_arch (), |
ffc2605c | 14679 | location.get (), |
f00aae0f | 14680 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14681 | 0 /* tempflag */, |
14682 | bp_static_tracepoint /* type_wanted */, | |
14683 | 0 /* Ignore count */, | |
14684 | pending_break_support, | |
14685 | ops, | |
14686 | from_tty, | |
14687 | 1 /* enabled */, | |
14688 | 0 /* internal */, 0); | |
7a697b8d SS |
14689 | } |
14690 | ||
409873ef SS |
14691 | /* Set up a fake reader function that gets command lines from a linked |
14692 | list that was acquired during tracepoint uploading. */ | |
14693 | ||
14694 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14695 | static int next_cmd; |
409873ef SS |
14696 | |
14697 | static char * | |
14698 | read_uploaded_action (void) | |
14699 | { | |
a18ba4e4 | 14700 | char *rslt = nullptr; |
409873ef | 14701 | |
a18ba4e4 SM |
14702 | if (next_cmd < this_utp->cmd_strings.size ()) |
14703 | { | |
14704 | rslt = this_utp->cmd_strings[next_cmd]; | |
14705 | next_cmd++; | |
14706 | } | |
409873ef SS |
14707 | |
14708 | return rslt; | |
14709 | } | |
14710 | ||
00bf0b85 SS |
14711 | /* Given information about a tracepoint as recorded on a target (which |
14712 | can be either a live system or a trace file), attempt to create an | |
14713 | equivalent GDB tracepoint. This is not a reliable process, since | |
14714 | the target does not necessarily have all the information used when | |
14715 | the tracepoint was originally defined. */ | |
14716 | ||
d9b3f62e | 14717 | struct tracepoint * |
00bf0b85 | 14718 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14719 | { |
f2fc3015 TT |
14720 | const char *addr_str; |
14721 | char small_buf[100]; | |
d9b3f62e | 14722 | struct tracepoint *tp; |
fd9b8c24 | 14723 | |
409873ef SS |
14724 | if (utp->at_string) |
14725 | addr_str = utp->at_string; | |
14726 | else | |
14727 | { | |
14728 | /* In the absence of a source location, fall back to raw | |
14729 | address. Since there is no way to confirm that the address | |
14730 | means the same thing as when the trace was started, warn the | |
14731 | user. */ | |
3e43a32a MS |
14732 | warning (_("Uploaded tracepoint %d has no " |
14733 | "source location, using raw address"), | |
409873ef | 14734 | utp->number); |
8c042590 | 14735 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14736 | addr_str = small_buf; |
14737 | } | |
14738 | ||
14739 | /* There's not much we can do with a sequence of bytecodes. */ | |
14740 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14741 | warning (_("Uploaded tracepoint %d condition " |
14742 | "has no source form, ignoring it"), | |
409873ef | 14743 | utp->number); |
d5551862 | 14744 | |
ffc2605c TT |
14745 | event_location_up location = string_to_event_location (&addr_str, |
14746 | current_language); | |
8cdf0e15 | 14747 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14748 | location.get (), |
f00aae0f | 14749 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14750 | 0 /* parse cond/thread */, |
8cdf0e15 | 14751 | 0 /* tempflag */, |
0fb4aa4b | 14752 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14753 | 0 /* Ignore count */, |
14754 | pending_break_support, | |
348d480f | 14755 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14756 | 0 /* from_tty */, |
84f4c1fe | 14757 | utp->enabled /* enabled */, |
44f238bb PA |
14758 | 0 /* internal */, |
14759 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14760 | return NULL; |
fd9b8c24 | 14761 | |
409873ef | 14762 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14763 | tp = get_tracepoint (tracepoint_count); |
14764 | gdb_assert (tp != NULL); | |
d5551862 | 14765 | |
00bf0b85 SS |
14766 | if (utp->pass > 0) |
14767 | { | |
8c042590 | 14768 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14769 | tp->number); |
00bf0b85 | 14770 | |
409873ef | 14771 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14772 | } |
14773 | ||
409873ef SS |
14774 | /* If we have uploaded versions of the original commands, set up a |
14775 | special-purpose "reader" function and call the usual command line | |
14776 | reader, then pass the result to the breakpoint command-setting | |
14777 | function. */ | |
a18ba4e4 | 14778 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14779 | { |
12973681 | 14780 | counted_command_line cmd_list; |
00bf0b85 | 14781 | |
409873ef | 14782 | this_utp = utp; |
3149d8c1 | 14783 | next_cmd = 0; |
d5551862 | 14784 | |
60b3cef2 | 14785 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14786 | |
c1fc2657 | 14787 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14788 | } |
a18ba4e4 SM |
14789 | else if (!utp->actions.empty () |
14790 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14791 | warning (_("Uploaded tracepoint %d actions " |
14792 | "have no source form, ignoring them"), | |
409873ef | 14793 | utp->number); |
00bf0b85 | 14794 | |
f196051f | 14795 | /* Copy any status information that might be available. */ |
c1fc2657 | 14796 | tp->hit_count = utp->hit_count; |
f196051f SS |
14797 | tp->traceframe_usage = utp->traceframe_usage; |
14798 | ||
00bf0b85 | 14799 | return tp; |
d9b3f62e | 14800 | } |
00bf0b85 | 14801 | |
1042e4c0 SS |
14802 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14803 | omitted. */ | |
14804 | ||
14805 | static void | |
1d12d88f | 14806 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14807 | { |
79a45e25 | 14808 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14809 | int num_printed; |
1042e4c0 | 14810 | |
e5a67952 | 14811 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14812 | |
14813 | if (num_printed == 0) | |
1042e4c0 | 14814 | { |
e5a67952 | 14815 | if (args == NULL || *args == '\0') |
112e8700 | 14816 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14817 | else |
112e8700 | 14818 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14819 | } |
ad443146 SS |
14820 | |
14821 | default_collect_info (); | |
1042e4c0 SS |
14822 | } |
14823 | ||
4a64f543 | 14824 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14825 | Not supported by all targets. */ |
14826 | static void | |
5fed81ff | 14827 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14828 | { |
14829 | enable_command (args, from_tty); | |
14830 | } | |
14831 | ||
4a64f543 | 14832 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14833 | Not supported by all targets. */ |
14834 | static void | |
5fed81ff | 14835 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14836 | { |
14837 | disable_command (args, from_tty); | |
14838 | } | |
14839 | ||
4a64f543 | 14840 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14841 | static void |
4495129a | 14842 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14843 | { |
35df4500 | 14844 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14845 | |
14846 | dont_repeat (); | |
14847 | ||
14848 | if (arg == 0) | |
14849 | { | |
14850 | int breaks_to_delete = 0; | |
14851 | ||
14852 | /* Delete all breakpoints if no argument. | |
14853 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14854 | have to be deleted with an explicit breakpoint number |
14855 | argument. */ | |
1042e4c0 | 14856 | ALL_TRACEPOINTS (b) |
46c6471b | 14857 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14858 | { |
14859 | breaks_to_delete = 1; | |
14860 | break; | |
14861 | } | |
1042e4c0 SS |
14862 | |
14863 | /* Ask user only if there are some breakpoints to delete. */ | |
14864 | if (!from_tty | |
14865 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14866 | { | |
35df4500 | 14867 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14868 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14869 | delete_breakpoint (b); |
1042e4c0 SS |
14870 | } |
14871 | } | |
14872 | else | |
48649e1b TT |
14873 | map_breakpoint_numbers |
14874 | (arg, [&] (breakpoint *b) | |
14875 | { | |
14876 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14877 | }); | |
1042e4c0 SS |
14878 | } |
14879 | ||
197f0a60 TT |
14880 | /* Helper function for trace_pass_command. */ |
14881 | ||
14882 | static void | |
d9b3f62e | 14883 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14884 | { |
d9b3f62e | 14885 | tp->pass_count = count; |
76727919 | 14886 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14887 | if (from_tty) |
14888 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14889 | tp->number, count); |
197f0a60 TT |
14890 | } |
14891 | ||
1042e4c0 SS |
14892 | /* Set passcount for tracepoint. |
14893 | ||
14894 | First command argument is passcount, second is tracepoint number. | |
14895 | If tracepoint number omitted, apply to most recently defined. | |
14896 | Also accepts special argument "all". */ | |
14897 | ||
14898 | static void | |
0b39b52e | 14899 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14900 | { |
d9b3f62e | 14901 | struct tracepoint *t1; |
0b39b52e | 14902 | ULONGEST count; |
1042e4c0 SS |
14903 | |
14904 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14905 | error (_("passcount command requires an " |
14906 | "argument (count + optional TP num)")); | |
1042e4c0 | 14907 | |
0b39b52e | 14908 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14909 | |
529480d0 | 14910 | args = skip_spaces (args); |
1042e4c0 SS |
14911 | if (*args && strncasecmp (args, "all", 3) == 0) |
14912 | { | |
d9b3f62e PA |
14913 | struct breakpoint *b; |
14914 | ||
1042e4c0 | 14915 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14916 | if (*args) |
14917 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14918 | |
d9b3f62e | 14919 | ALL_TRACEPOINTS (b) |
197f0a60 | 14920 | { |
d9b3f62e | 14921 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14922 | trace_pass_set_count (t1, count, from_tty); |
14923 | } | |
14924 | } | |
14925 | else if (*args == '\0') | |
1042e4c0 | 14926 | { |
5fa1d40e | 14927 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14928 | if (t1) |
197f0a60 TT |
14929 | trace_pass_set_count (t1, count, from_tty); |
14930 | } | |
14931 | else | |
14932 | { | |
bfd28288 PA |
14933 | number_or_range_parser parser (args); |
14934 | while (!parser.finished ()) | |
1042e4c0 | 14935 | { |
bfd28288 | 14936 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14937 | if (t1) |
14938 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14939 | } |
14940 | } | |
1042e4c0 SS |
14941 | } |
14942 | ||
d9b3f62e | 14943 | struct tracepoint * |
1042e4c0 SS |
14944 | get_tracepoint (int num) |
14945 | { | |
14946 | struct breakpoint *t; | |
14947 | ||
14948 | ALL_TRACEPOINTS (t) | |
14949 | if (t->number == num) | |
d9b3f62e | 14950 | return (struct tracepoint *) t; |
1042e4c0 SS |
14951 | |
14952 | return NULL; | |
14953 | } | |
14954 | ||
d5551862 SS |
14955 | /* Find the tracepoint with the given target-side number (which may be |
14956 | different from the tracepoint number after disconnecting and | |
14957 | reconnecting). */ | |
14958 | ||
d9b3f62e | 14959 | struct tracepoint * |
d5551862 SS |
14960 | get_tracepoint_by_number_on_target (int num) |
14961 | { | |
d9b3f62e | 14962 | struct breakpoint *b; |
d5551862 | 14963 | |
d9b3f62e PA |
14964 | ALL_TRACEPOINTS (b) |
14965 | { | |
14966 | struct tracepoint *t = (struct tracepoint *) b; | |
14967 | ||
14968 | if (t->number_on_target == num) | |
14969 | return t; | |
14970 | } | |
d5551862 SS |
14971 | |
14972 | return NULL; | |
14973 | } | |
14974 | ||
1042e4c0 | 14975 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14976 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14977 | If the argument is missing, the most recent tracepoint |
14978 | (tracepoint_count) is returned. */ | |
14979 | ||
d9b3f62e | 14980 | struct tracepoint * |
0b39b52e | 14981 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14982 | number_or_range_parser *parser) |
1042e4c0 | 14983 | { |
1042e4c0 SS |
14984 | struct breakpoint *t; |
14985 | int tpnum; | |
0b39b52e | 14986 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14987 | |
bfd28288 | 14988 | if (parser != NULL) |
197f0a60 | 14989 | { |
bfd28288 PA |
14990 | gdb_assert (!parser->finished ()); |
14991 | tpnum = parser->get_number (); | |
197f0a60 TT |
14992 | } |
14993 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14994 | tpnum = tracepoint_count; |
1042e4c0 | 14995 | else |
197f0a60 | 14996 | tpnum = get_number (arg); |
1042e4c0 SS |
14997 | |
14998 | if (tpnum <= 0) | |
14999 | { | |
15000 | if (instring && *instring) | |
15001 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15002 | instring); | |
15003 | else | |
5fa1d40e | 15004 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15005 | return NULL; |
15006 | } | |
15007 | ||
15008 | ALL_TRACEPOINTS (t) | |
15009 | if (t->number == tpnum) | |
15010 | { | |
d9b3f62e | 15011 | return (struct tracepoint *) t; |
1042e4c0 SS |
15012 | } |
15013 | ||
1042e4c0 SS |
15014 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15015 | return NULL; | |
15016 | } | |
15017 | ||
d9b3f62e PA |
15018 | void |
15019 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15020 | { | |
15021 | if (b->thread != -1) | |
15022 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15023 | ||
15024 | if (b->task != 0) | |
15025 | fprintf_unfiltered (fp, " task %d", b->task); | |
15026 | ||
15027 | fprintf_unfiltered (fp, "\n"); | |
15028 | } | |
15029 | ||
6149aea9 PA |
15030 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15031 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15032 | on each breakpoint and only include the ones for which it returns | |
15033 | non-zero. */ | |
15034 | ||
1042e4c0 | 15035 | static void |
4495129a | 15036 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15037 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15038 | { |
15039 | struct breakpoint *tp; | |
6149aea9 | 15040 | int any = 0; |
6149aea9 | 15041 | int extra_trace_bits = 0; |
1042e4c0 | 15042 | |
6149aea9 PA |
15043 | if (filename == 0 || *filename == 0) |
15044 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15045 | |
15046 | /* See if we have anything to save. */ | |
6149aea9 | 15047 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15048 | { |
6149aea9 | 15049 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15050 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15051 | continue; |
15052 | ||
15053 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15054 | if (filter && !filter (tp)) | |
15055 | continue; | |
15056 | ||
15057 | any = 1; | |
15058 | ||
15059 | if (is_tracepoint (tp)) | |
15060 | { | |
15061 | extra_trace_bits = 1; | |
15062 | ||
15063 | /* We can stop searching. */ | |
15064 | break; | |
15065 | } | |
1042e4c0 | 15066 | } |
6149aea9 PA |
15067 | |
15068 | if (!any) | |
1042e4c0 | 15069 | { |
6149aea9 | 15070 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15071 | return; |
15072 | } | |
15073 | ||
ee0c3293 | 15074 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15075 | |
15076 | stdio_file fp; | |
15077 | ||
ee0c3293 | 15078 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15079 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15080 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15081 | |
6149aea9 | 15082 | if (extra_trace_bits) |
d7e74731 | 15083 | save_trace_state_variables (&fp); |
8bf6485c | 15084 | |
6149aea9 | 15085 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15086 | { |
6149aea9 | 15087 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15088 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15089 | continue; |
8bf6485c | 15090 | |
6149aea9 PA |
15091 | /* If we have a filter, only save the breakpoints it accepts. */ |
15092 | if (filter && !filter (tp)) | |
15093 | continue; | |
15094 | ||
d7e74731 | 15095 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15096 | |
6149aea9 PA |
15097 | /* Note, we can't rely on tp->number for anything, as we can't |
15098 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15099 | instead. */ | |
15100 | ||
15101 | if (tp->cond_string) | |
d7e74731 | 15102 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15103 | |
15104 | if (tp->ignore_count) | |
d7e74731 | 15105 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15106 | |
2d9442cc | 15107 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15108 | { |
d7e74731 | 15109 | fp.puts (" commands\n"); |
a7bdde9e | 15110 | |
d7e74731 | 15111 | current_uiout->redirect (&fp); |
492d29ea | 15112 | TRY |
1042e4c0 | 15113 | { |
d1b0a7bf | 15114 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15115 | } |
492d29ea PA |
15116 | CATCH (ex, RETURN_MASK_ALL) |
15117 | { | |
112e8700 | 15118 | current_uiout->redirect (NULL); |
492d29ea PA |
15119 | throw_exception (ex); |
15120 | } | |
15121 | END_CATCH | |
1042e4c0 | 15122 | |
112e8700 | 15123 | current_uiout->redirect (NULL); |
d7e74731 | 15124 | fp.puts (" end\n"); |
1042e4c0 | 15125 | } |
6149aea9 PA |
15126 | |
15127 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15128 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15129 | |
15130 | /* If this is a multi-location breakpoint, check if the locations | |
15131 | should be individually disabled. Watchpoint locations are | |
15132 | special, and not user visible. */ | |
15133 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15134 | { | |
15135 | struct bp_location *loc; | |
15136 | int n = 1; | |
15137 | ||
15138 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15139 | if (!loc->enabled) | |
d7e74731 | 15140 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15141 | } |
1042e4c0 | 15142 | } |
8bf6485c | 15143 | |
6149aea9 | 15144 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15145 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15146 | |
1042e4c0 | 15147 | if (from_tty) |
ee0c3293 | 15148 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15149 | } |
15150 | ||
15151 | /* The `save breakpoints' command. */ | |
15152 | ||
15153 | static void | |
4495129a | 15154 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15155 | { |
15156 | save_breakpoints (args, from_tty, NULL); | |
15157 | } | |
15158 | ||
15159 | /* The `save tracepoints' command. */ | |
15160 | ||
15161 | static void | |
4495129a | 15162 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15163 | { |
15164 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15165 | } |
15166 | ||
15167 | /* Create a vector of all tracepoints. */ | |
15168 | ||
15169 | VEC(breakpoint_p) * | |
eeae04df | 15170 | all_tracepoints (void) |
1042e4c0 SS |
15171 | { |
15172 | VEC(breakpoint_p) *tp_vec = 0; | |
15173 | struct breakpoint *tp; | |
15174 | ||
15175 | ALL_TRACEPOINTS (tp) | |
15176 | { | |
15177 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15178 | } | |
15179 | ||
15180 | return tp_vec; | |
15181 | } | |
15182 | ||
c906108c | 15183 | \f |
629500fa KS |
15184 | /* This help string is used to consolidate all the help string for specifying |
15185 | locations used by several commands. */ | |
15186 | ||
15187 | #define LOCATION_HELP_STRING \ | |
15188 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15189 | source filename, function name, label name, and line number.\n\ | |
15190 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15191 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15192 | \"factorial.c:fact:the_top\".\n\ | |
15193 | \n\ | |
15194 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15195 | program. Example: To specify the fourth byte past the start function\n\ | |
15196 | \"main\", use \"*main + 4\".\n\ | |
15197 | \n\ | |
15198 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15199 | syntax to specify location parameters.\n\ | |
15200 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15201 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15202 | -function fact -label the_top\".\n\ |
15203 | \n\ | |
15204 | By default, a specified function is matched against the program's\n\ | |
15205 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15206 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15207 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15208 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15209 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15210 | |
4a64f543 MS |
15211 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15212 | commands. It is defined as a macro to prevent duplication. | |
15213 | COMMAND should be a string constant containing the name of the | |
15214 | command. */ | |
629500fa | 15215 | |
31e2b00f | 15216 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15217 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15218 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15219 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15220 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15221 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15222 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15223 | below.\n\ | |
15224 | \n\ | |
dc10affe PA |
15225 | With no LOCATION, uses current execution address of the selected\n\ |
15226 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15227 | \n\ |
15228 | THREADNUM is the number from \"info threads\".\n\ | |
15229 | CONDITION is a boolean expression.\n\ | |
629500fa | 15230 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15231 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15232 | conditions are different.\n\ | |
31e2b00f AS |
15233 | \n\ |
15234 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15235 | ||
44feb3ce TT |
15236 | /* List of subcommands for "catch". */ |
15237 | static struct cmd_list_element *catch_cmdlist; | |
15238 | ||
15239 | /* List of subcommands for "tcatch". */ | |
15240 | static struct cmd_list_element *tcatch_cmdlist; | |
15241 | ||
9ac4176b | 15242 | void |
a121b7c1 | 15243 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15244 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15245 | completer_ftype *completer, |
44feb3ce TT |
15246 | void *user_data_catch, |
15247 | void *user_data_tcatch) | |
15248 | { | |
15249 | struct cmd_list_element *command; | |
15250 | ||
0450cc4c | 15251 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15252 | &catch_cmdlist); |
15253 | set_cmd_sfunc (command, sfunc); | |
15254 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15255 | set_cmd_completer (command, completer); |
44feb3ce | 15256 | |
0450cc4c | 15257 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15258 | &tcatch_cmdlist); |
15259 | set_cmd_sfunc (command, sfunc); | |
15260 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15261 | set_cmd_completer (command, completer); |
44feb3ce TT |
15262 | } |
15263 | ||
6149aea9 | 15264 | static void |
981a3fb3 | 15265 | save_command (const char *arg, int from_tty) |
6149aea9 | 15266 | { |
3e43a32a MS |
15267 | printf_unfiltered (_("\"save\" must be followed by " |
15268 | "the name of a save subcommand.\n")); | |
635c7e8a | 15269 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15270 | } |
15271 | ||
84f4c1fe PM |
15272 | struct breakpoint * |
15273 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15274 | void *data) | |
15275 | { | |
35df4500 | 15276 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15277 | |
35df4500 | 15278 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15279 | { |
15280 | if ((*callback) (b, data)) | |
15281 | return b; | |
15282 | } | |
15283 | ||
15284 | return NULL; | |
15285 | } | |
15286 | ||
0574c78f GB |
15287 | /* Zero if any of the breakpoint's locations could be a location where |
15288 | functions have been inlined, nonzero otherwise. */ | |
15289 | ||
15290 | static int | |
15291 | is_non_inline_function (struct breakpoint *b) | |
15292 | { | |
15293 | /* The shared library event breakpoint is set on the address of a | |
15294 | non-inline function. */ | |
15295 | if (b->type == bp_shlib_event) | |
15296 | return 1; | |
15297 | ||
15298 | return 0; | |
15299 | } | |
15300 | ||
15301 | /* Nonzero if the specified PC cannot be a location where functions | |
15302 | have been inlined. */ | |
15303 | ||
15304 | int | |
accd0bcd | 15305 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15306 | const struct target_waitstatus *ws) |
0574c78f GB |
15307 | { |
15308 | struct breakpoint *b; | |
15309 | struct bp_location *bl; | |
15310 | ||
15311 | ALL_BREAKPOINTS (b) | |
15312 | { | |
15313 | if (!is_non_inline_function (b)) | |
15314 | continue; | |
15315 | ||
15316 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15317 | { | |
15318 | if (!bl->shlib_disabled | |
09ac7c10 | 15319 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15320 | return 1; |
15321 | } | |
15322 | } | |
15323 | ||
15324 | return 0; | |
15325 | } | |
15326 | ||
2f202fde JK |
15327 | /* Remove any references to OBJFILE which is going to be freed. */ |
15328 | ||
15329 | void | |
15330 | breakpoint_free_objfile (struct objfile *objfile) | |
15331 | { | |
15332 | struct bp_location **locp, *loc; | |
15333 | ||
15334 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15335 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15336 | loc->symtab = NULL; |
15337 | } | |
15338 | ||
2060206e PA |
15339 | void |
15340 | initialize_breakpoint_ops (void) | |
15341 | { | |
15342 | static int initialized = 0; | |
15343 | ||
15344 | struct breakpoint_ops *ops; | |
15345 | ||
15346 | if (initialized) | |
15347 | return; | |
15348 | initialized = 1; | |
15349 | ||
15350 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15351 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15352 | internal and momentary breakpoints, etc.). */ | |
15353 | ops = &bkpt_base_breakpoint_ops; | |
15354 | *ops = base_breakpoint_ops; | |
15355 | ops->re_set = bkpt_re_set; | |
15356 | ops->insert_location = bkpt_insert_location; | |
15357 | ops->remove_location = bkpt_remove_location; | |
15358 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15359 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15360 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15361 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15362 | |
15363 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15364 | ops = &bkpt_breakpoint_ops; | |
15365 | *ops = bkpt_base_breakpoint_ops; | |
15366 | ops->re_set = bkpt_re_set; | |
15367 | ops->resources_needed = bkpt_resources_needed; | |
15368 | ops->print_it = bkpt_print_it; | |
15369 | ops->print_mention = bkpt_print_mention; | |
15370 | ops->print_recreate = bkpt_print_recreate; | |
15371 | ||
15372 | /* Ranged breakpoints. */ | |
15373 | ops = &ranged_breakpoint_ops; | |
15374 | *ops = bkpt_breakpoint_ops; | |
15375 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15376 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15377 | ops->print_it = print_it_ranged_breakpoint; | |
15378 | ops->print_one = print_one_ranged_breakpoint; | |
15379 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15380 | ops->print_mention = print_mention_ranged_breakpoint; | |
15381 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15382 | ||
15383 | /* Internal breakpoints. */ | |
15384 | ops = &internal_breakpoint_ops; | |
15385 | *ops = bkpt_base_breakpoint_ops; | |
15386 | ops->re_set = internal_bkpt_re_set; | |
15387 | ops->check_status = internal_bkpt_check_status; | |
15388 | ops->print_it = internal_bkpt_print_it; | |
15389 | ops->print_mention = internal_bkpt_print_mention; | |
15390 | ||
15391 | /* Momentary breakpoints. */ | |
15392 | ops = &momentary_breakpoint_ops; | |
15393 | *ops = bkpt_base_breakpoint_ops; | |
15394 | ops->re_set = momentary_bkpt_re_set; | |
15395 | ops->check_status = momentary_bkpt_check_status; | |
15396 | ops->print_it = momentary_bkpt_print_it; | |
15397 | ops->print_mention = momentary_bkpt_print_mention; | |
15398 | ||
55aa24fb SDJ |
15399 | /* Probe breakpoints. */ |
15400 | ops = &bkpt_probe_breakpoint_ops; | |
15401 | *ops = bkpt_breakpoint_ops; | |
15402 | ops->insert_location = bkpt_probe_insert_location; | |
15403 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15404 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15405 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15406 | |
2060206e PA |
15407 | /* Watchpoints. */ |
15408 | ops = &watchpoint_breakpoint_ops; | |
15409 | *ops = base_breakpoint_ops; | |
15410 | ops->re_set = re_set_watchpoint; | |
15411 | ops->insert_location = insert_watchpoint; | |
15412 | ops->remove_location = remove_watchpoint; | |
15413 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15414 | ops->check_status = check_status_watchpoint; | |
15415 | ops->resources_needed = resources_needed_watchpoint; | |
15416 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15417 | ops->print_it = print_it_watchpoint; | |
15418 | ops->print_mention = print_mention_watchpoint; | |
15419 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15420 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15421 | |
15422 | /* Masked watchpoints. */ | |
15423 | ops = &masked_watchpoint_breakpoint_ops; | |
15424 | *ops = watchpoint_breakpoint_ops; | |
15425 | ops->insert_location = insert_masked_watchpoint; | |
15426 | ops->remove_location = remove_masked_watchpoint; | |
15427 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15428 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15429 | ops->print_it = print_it_masked_watchpoint; | |
15430 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15431 | ops->print_mention = print_mention_masked_watchpoint; | |
15432 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15433 | ||
15434 | /* Tracepoints. */ | |
15435 | ops = &tracepoint_breakpoint_ops; | |
15436 | *ops = base_breakpoint_ops; | |
15437 | ops->re_set = tracepoint_re_set; | |
15438 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15439 | ops->print_one_detail = tracepoint_print_one_detail; | |
15440 | ops->print_mention = tracepoint_print_mention; | |
15441 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15442 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15443 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15444 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15445 | |
55aa24fb SDJ |
15446 | /* Probe tracepoints. */ |
15447 | ops = &tracepoint_probe_breakpoint_ops; | |
15448 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15449 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15450 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15451 | |
983af33b SDJ |
15452 | /* Static tracepoints with marker (`-m'). */ |
15453 | ops = &strace_marker_breakpoint_ops; | |
15454 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15455 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15456 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15457 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15458 | |
15459 | /* Fork catchpoints. */ | |
15460 | ops = &catch_fork_breakpoint_ops; | |
15461 | *ops = base_breakpoint_ops; | |
15462 | ops->insert_location = insert_catch_fork; | |
15463 | ops->remove_location = remove_catch_fork; | |
15464 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15465 | ops->print_it = print_it_catch_fork; | |
15466 | ops->print_one = print_one_catch_fork; | |
15467 | ops->print_mention = print_mention_catch_fork; | |
15468 | ops->print_recreate = print_recreate_catch_fork; | |
15469 | ||
15470 | /* Vfork catchpoints. */ | |
15471 | ops = &catch_vfork_breakpoint_ops; | |
15472 | *ops = base_breakpoint_ops; | |
15473 | ops->insert_location = insert_catch_vfork; | |
15474 | ops->remove_location = remove_catch_vfork; | |
15475 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15476 | ops->print_it = print_it_catch_vfork; | |
15477 | ops->print_one = print_one_catch_vfork; | |
15478 | ops->print_mention = print_mention_catch_vfork; | |
15479 | ops->print_recreate = print_recreate_catch_vfork; | |
15480 | ||
15481 | /* Exec catchpoints. */ | |
15482 | ops = &catch_exec_breakpoint_ops; | |
15483 | *ops = base_breakpoint_ops; | |
2060206e PA |
15484 | ops->insert_location = insert_catch_exec; |
15485 | ops->remove_location = remove_catch_exec; | |
15486 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15487 | ops->print_it = print_it_catch_exec; | |
15488 | ops->print_one = print_one_catch_exec; | |
15489 | ops->print_mention = print_mention_catch_exec; | |
15490 | ops->print_recreate = print_recreate_catch_exec; | |
15491 | ||
edcc5120 TT |
15492 | /* Solib-related catchpoints. */ |
15493 | ops = &catch_solib_breakpoint_ops; | |
15494 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15495 | ops->insert_location = insert_catch_solib; |
15496 | ops->remove_location = remove_catch_solib; | |
15497 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15498 | ops->check_status = check_status_catch_solib; | |
15499 | ops->print_it = print_it_catch_solib; | |
15500 | ops->print_one = print_one_catch_solib; | |
15501 | ops->print_mention = print_mention_catch_solib; | |
15502 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15503 | |
15504 | ops = &dprintf_breakpoint_ops; | |
15505 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15506 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15507 | ops->resources_needed = bkpt_resources_needed; |
15508 | ops->print_it = bkpt_print_it; | |
15509 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15510 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15511 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15512 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15513 | } |
15514 | ||
8bfd80db YQ |
15515 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15516 | ||
15517 | static struct cmd_list_element *enablebreaklist = NULL; | |
15518 | ||
c906108c | 15519 | void |
fba45db2 | 15520 | _initialize_breakpoint (void) |
c906108c SS |
15521 | { |
15522 | struct cmd_list_element *c; | |
15523 | ||
2060206e PA |
15524 | initialize_breakpoint_ops (); |
15525 | ||
76727919 TT |
15526 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15527 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15528 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15529 | |
55aa24fb | 15530 | breakpoint_objfile_key |
43dce439 | 15531 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15532 | |
c906108c SS |
15533 | breakpoint_chain = 0; |
15534 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15535 | before a breakpoint is set. */ | |
15536 | breakpoint_count = 0; | |
15537 | ||
1042e4c0 SS |
15538 | tracepoint_count = 0; |
15539 | ||
1bedd215 AC |
15540 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15541 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15542 | Usage is `ignore N COUNT'.")); | |
c906108c | 15543 | |
1bedd215 | 15544 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15545 | Set commands to be executed when the given breakpoints are hit.\n\ |
15546 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15547 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15548 | (e.g. `5-7').\n\ | |
c906108c SS |
15549 | With no argument, the targeted breakpoint is the last one set.\n\ |
15550 | The commands themselves follow starting on the next line.\n\ | |
15551 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15552 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15553 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15554 | |
d55637df | 15555 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15556 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15557 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15558 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15559 | set_cmd_completer (c, condition_completer); |
c906108c | 15560 | |
1bedd215 | 15561 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15562 | Set a temporary breakpoint.\n\ |
c906108c SS |
15563 | Like \"break\" except the breakpoint is only temporary,\n\ |
15564 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15565 | by using \"enable delete\" on the breakpoint number.\n\ |
15566 | \n" | |
15567 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15568 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15569 | |
1bedd215 | 15570 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15571 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15572 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15573 | some target hardware may not have this support.\n\ |
15574 | \n" | |
15575 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15576 | set_cmd_completer (c, location_completer); |
c906108c | 15577 | |
1bedd215 | 15578 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15579 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15580 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15581 | so it will be deleted when hit.\n\ |
15582 | \n" | |
15583 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15584 | set_cmd_completer (c, location_completer); |
c906108c | 15585 | |
1bedd215 AC |
15586 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15587 | Enable some breakpoints.\n\ | |
c906108c SS |
15588 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15589 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15590 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15591 | With a subcommand you can enable temporarily."), |
c906108c | 15592 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15593 | |
15594 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15595 | ||
84951ab5 | 15596 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15597 | Enable some breakpoints.\n\ |
c906108c SS |
15598 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15599 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15600 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15601 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15602 | |
1a966eab AC |
15603 | add_cmd ("once", no_class, enable_once_command, _("\ |
15604 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15605 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15606 | &enablebreaklist); |
15607 | ||
1a966eab AC |
15608 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15609 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15610 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15611 | &enablebreaklist); |
15612 | ||
816338b5 SS |
15613 | add_cmd ("count", no_class, enable_count_command, _("\ |
15614 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15615 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15616 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15617 | &enablebreaklist); | |
15618 | ||
1a966eab AC |
15619 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15620 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15621 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15622 | &enablelist); |
15623 | ||
1a966eab AC |
15624 | add_cmd ("once", no_class, enable_once_command, _("\ |
15625 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15626 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15627 | &enablelist); |
15628 | ||
15629 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15630 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15631 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15632 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15633 | &enablelist); |
15634 | ||
1bedd215 AC |
15635 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15636 | Disable some breakpoints.\n\ | |
c906108c SS |
15637 | Arguments are breakpoint numbers with spaces in between.\n\ |
15638 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15639 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15640 | &disablelist, "disable ", 1, &cmdlist); |
15641 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15642 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15643 | |
1a966eab AC |
15644 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15645 | Disable some breakpoints.\n\ | |
c906108c SS |
15646 | Arguments are breakpoint numbers with spaces in between.\n\ |
15647 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15648 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15649 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15650 | &disablelist); |
15651 | ||
1bedd215 AC |
15652 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15653 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15654 | Arguments are breakpoint numbers with spaces in between.\n\ |
15655 | To delete all breakpoints, give no argument.\n\ | |
15656 | \n\ | |
15657 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15658 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15659 | &deletelist, "delete ", 1, &cmdlist); |
15660 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15661 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15662 | |
1a966eab AC |
15663 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15664 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15665 | Arguments are breakpoint numbers with spaces in between.\n\ |
15666 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15667 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15668 | &deletelist); |
15669 | ||
1bedd215 | 15670 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15671 | Clear breakpoint at specified location.\n\ |
15672 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15673 | \n\ |
15674 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15675 | is executing in.\n" |
15676 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15677 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15678 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15679 | |
1bedd215 | 15680 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15681 | Set breakpoint at specified location.\n" |
31e2b00f | 15682 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15683 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15684 | |
c906108c SS |
15685 | add_com_alias ("b", "break", class_run, 1); |
15686 | add_com_alias ("br", "break", class_run, 1); | |
15687 | add_com_alias ("bre", "break", class_run, 1); | |
15688 | add_com_alias ("brea", "break", class_run, 1); | |
15689 | ||
c906108c SS |
15690 | if (dbx_commands) |
15691 | { | |
1bedd215 AC |
15692 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15693 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15694 | &stoplist, "stop ", 1, &cmdlist); |
15695 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15696 | _("Break in function or address."), &stoplist); |
c5aa993b | 15697 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15698 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15699 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15700 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15701 | The \"Type\" column indicates one of:\n\ |
15702 | \tbreakpoint - normal breakpoint\n\ | |
15703 | \twatchpoint - watchpoint\n\ | |
15704 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15705 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15706 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15707 | address and file/line number respectively.\n\ |
15708 | \n\ | |
15709 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15710 | are set to the address of the last breakpoint listed unless the command\n\ |
15711 | is prefixed with \"server \".\n\n\ | |
c906108c | 15712 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15713 | breakpoint set.")); |
c906108c SS |
15714 | } |
15715 | ||
11db9430 | 15716 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15717 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15718 | The \"Type\" column indicates one of:\n\ |
15719 | \tbreakpoint - normal breakpoint\n\ | |
15720 | \twatchpoint - watchpoint\n\ | |
15721 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15722 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15723 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15724 | address and file/line number respectively.\n\ |
15725 | \n\ | |
15726 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15727 | are set to the address of the last breakpoint listed unless the command\n\ |
15728 | is prefixed with \"server \".\n\n\ | |
c906108c | 15729 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15730 | breakpoint set.")); |
c906108c | 15731 | |
6b04bdb7 MS |
15732 | add_info_alias ("b", "breakpoints", 1); |
15733 | ||
1a966eab AC |
15734 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15735 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15736 | The \"Type\" column indicates one of:\n\ |
15737 | \tbreakpoint - normal breakpoint\n\ | |
15738 | \twatchpoint - watchpoint\n\ | |
15739 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15740 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15741 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15742 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15743 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15744 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15745 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15746 | address and file/line number respectively.\n\ |
15747 | \n\ | |
15748 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15749 | are set to the address of the last breakpoint listed unless the command\n\ |
15750 | is prefixed with \"server \".\n\n\ | |
c906108c | 15751 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15752 | breakpoint set."), |
c906108c SS |
15753 | &maintenanceinfolist); |
15754 | ||
44feb3ce TT |
15755 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15756 | Set catchpoints to catch events."), | |
15757 | &catch_cmdlist, "catch ", | |
15758 | 0/*allow-unknown*/, &cmdlist); | |
15759 | ||
15760 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15761 | Set temporary catchpoints to catch events."), | |
15762 | &tcatch_cmdlist, "tcatch ", | |
15763 | 0/*allow-unknown*/, &cmdlist); | |
15764 | ||
44feb3ce TT |
15765 | add_catch_command ("fork", _("Catch calls to fork."), |
15766 | catch_fork_command_1, | |
a96d9b2e | 15767 | NULL, |
44feb3ce TT |
15768 | (void *) (uintptr_t) catch_fork_permanent, |
15769 | (void *) (uintptr_t) catch_fork_temporary); | |
15770 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15771 | catch_fork_command_1, | |
a96d9b2e | 15772 | NULL, |
44feb3ce TT |
15773 | (void *) (uintptr_t) catch_vfork_permanent, |
15774 | (void *) (uintptr_t) catch_vfork_temporary); | |
15775 | add_catch_command ("exec", _("Catch calls to exec."), | |
15776 | catch_exec_command_1, | |
a96d9b2e SDJ |
15777 | NULL, |
15778 | CATCH_PERMANENT, | |
15779 | CATCH_TEMPORARY); | |
edcc5120 TT |
15780 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15781 | Usage: catch load [REGEX]\n\ | |
15782 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15783 | catch_load_command_1, | |
15784 | NULL, | |
15785 | CATCH_PERMANENT, | |
15786 | CATCH_TEMPORARY); | |
15787 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15788 | Usage: catch unload [REGEX]\n\ | |
15789 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15790 | catch_unload_command_1, | |
15791 | NULL, | |
15792 | CATCH_PERMANENT, | |
15793 | CATCH_TEMPORARY); | |
c5aa993b | 15794 | |
1bedd215 AC |
15795 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15796 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15797 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15798 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15799 | an expression changes.\n\ |
15800 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15801 | the memory to which it refers.")); | |
65d12d83 | 15802 | set_cmd_completer (c, expression_completer); |
c906108c | 15803 | |
1bedd215 AC |
15804 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15805 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15806 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15807 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15808 | an expression is read.\n\ |
15809 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15810 | the memory to which it refers.")); | |
65d12d83 | 15811 | set_cmd_completer (c, expression_completer); |
c906108c | 15812 | |
1bedd215 AC |
15813 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15814 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15815 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15816 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15817 | an expression is either read or written.\n\ |
15818 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15819 | the memory to which it refers.")); | |
65d12d83 | 15820 | set_cmd_completer (c, expression_completer); |
c906108c | 15821 | |
11db9430 | 15822 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15823 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15824 | |
920d2a44 AC |
15825 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15826 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15827 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15828 | &can_use_hw_watchpoints, _("\ | |
15829 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15830 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15831 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15832 | such is available. (However, any hardware watchpoints that were\n\ | |
15833 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15834 | hardware.)"), |
15835 | NULL, | |
920d2a44 | 15836 | show_can_use_hw_watchpoints, |
85c07804 | 15837 | &setlist, &showlist); |
c906108c SS |
15838 | |
15839 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15840 | |
1042e4c0 SS |
15841 | /* Tracepoint manipulation commands. */ |
15842 | ||
15843 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15844 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15845 | \n" |
15846 | BREAK_ARGS_HELP ("trace") "\n\ | |
15847 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15848 | set_cmd_completer (c, location_completer); | |
15849 | ||
15850 | add_com_alias ("tp", "trace", class_alias, 0); | |
15851 | add_com_alias ("tr", "trace", class_alias, 1); | |
15852 | add_com_alias ("tra", "trace", class_alias, 1); | |
15853 | add_com_alias ("trac", "trace", class_alias, 1); | |
15854 | ||
7a697b8d | 15855 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15856 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15857 | \n" |
15858 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15859 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15860 | set_cmd_completer (c, location_completer); | |
15861 | ||
0fb4aa4b | 15862 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15863 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15864 | \n\ |
15865 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15866 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15867 | or -m MARKER_ID.\n\n\ | |
15868 | If a marker id is specified, probe the marker with that name. With\n\ | |
15869 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15870 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15871 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15872 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15873 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15874 | \n\ | |
15875 | CONDITION is a boolean expression.\n\ | |
629500fa | 15876 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15877 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15878 | conditions are different.\n\ | |
0fb4aa4b PA |
15879 | \n\ |
15880 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15881 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15882 | set_cmd_completer (c, location_completer); | |
15883 | ||
11db9430 | 15884 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15885 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15886 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15887 | last tracepoint set.")); | |
15888 | ||
15889 | add_info_alias ("tp", "tracepoints", 1); | |
15890 | ||
15891 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15892 | Delete specified tracepoints.\n\ | |
15893 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15894 | No argument means delete all tracepoints."), | |
15895 | &deletelist); | |
7e20dfcd | 15896 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15897 | |
15898 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15899 | Disable specified tracepoints.\n\ | |
15900 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15901 | No argument means disable all tracepoints."), | |
15902 | &disablelist); | |
15903 | deprecate_cmd (c, "disable"); | |
15904 | ||
15905 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15906 | Enable specified tracepoints.\n\ | |
15907 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15908 | No argument means enable all tracepoints."), | |
15909 | &enablelist); | |
15910 | deprecate_cmd (c, "enable"); | |
15911 | ||
15912 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15913 | Set the passcount for a tracepoint.\n\ | |
15914 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15915 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15916 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15917 | ||
6149aea9 PA |
15918 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15919 | _("Save breakpoint definitions as a script."), | |
15920 | &save_cmdlist, "save ", | |
15921 | 0/*allow-unknown*/, &cmdlist); | |
15922 | ||
15923 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15924 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15925 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15926 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15927 | session to restore them."), | |
15928 | &save_cmdlist); | |
15929 | set_cmd_completer (c, filename_completer); | |
15930 | ||
15931 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15932 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15933 | Use the 'source' command in another debug session to restore them."), |
15934 | &save_cmdlist); | |
1042e4c0 SS |
15935 | set_cmd_completer (c, filename_completer); |
15936 | ||
6149aea9 PA |
15937 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15938 | deprecate_cmd (c, "save tracepoints"); | |
15939 | ||
1bedd215 | 15940 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15941 | Breakpoint specific settings\n\ |
15942 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15943 | pending breakpoint behavior"), |
fa8d40ab JJ |
15944 | &breakpoint_set_cmdlist, "set breakpoint ", |
15945 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15946 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15947 | Breakpoint specific settings\n\ |
15948 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15949 | pending breakpoint behavior"), |
fa8d40ab JJ |
15950 | &breakpoint_show_cmdlist, "show breakpoint ", |
15951 | 0/*allow-unknown*/, &showlist); | |
15952 | ||
7915a72c AC |
15953 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15954 | &pending_break_support, _("\ | |
15955 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15956 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15957 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15958 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15959 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15960 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15961 | NULL, |
920d2a44 | 15962 | show_pending_break_support, |
6e1d7d6c AC |
15963 | &breakpoint_set_cmdlist, |
15964 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15965 | |
15966 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15967 | |
15968 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15969 | &automatic_hardware_breakpoints, _("\ | |
15970 | Set automatic usage of hardware breakpoints."), _("\ | |
15971 | Show automatic usage of hardware breakpoints."), _("\ | |
15972 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15973 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15974 | a warning will be emitted for such breakpoints."), | |
15975 | NULL, | |
15976 | show_automatic_hardware_breakpoints, | |
15977 | &breakpoint_set_cmdlist, | |
15978 | &breakpoint_show_cmdlist); | |
74960c60 | 15979 | |
a25a5a45 PA |
15980 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15981 | &always_inserted_mode, _("\ | |
74960c60 VP |
15982 | Set mode for inserting breakpoints."), _("\ |
15983 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15984 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15985 | they're created, kept inserted even when execution stops, and removed\n\ | |
15986 | only when the user deletes them. When this mode is off (the default),\n\ | |
15987 | breakpoints are inserted only when execution continues, and removed\n\ | |
15988 | when execution stops."), | |
72d0e2c5 YQ |
15989 | NULL, |
15990 | &show_always_inserted_mode, | |
15991 | &breakpoint_set_cmdlist, | |
15992 | &breakpoint_show_cmdlist); | |
f1310107 | 15993 | |
b775012e LM |
15994 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15995 | condition_evaluation_enums, | |
15996 | &condition_evaluation_mode_1, _("\ | |
15997 | Set mode of breakpoint condition evaluation."), _("\ | |
15998 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15999 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16000 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16001 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16002 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16003 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16004 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16005 | be set to \"gdb\""), | |
16006 | &set_condition_evaluation_mode, | |
16007 | &show_condition_evaluation_mode, | |
16008 | &breakpoint_set_cmdlist, | |
16009 | &breakpoint_show_cmdlist); | |
16010 | ||
f1310107 TJB |
16011 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16012 | Set a breakpoint for an address range.\n\ | |
16013 | break-range START-LOCATION, END-LOCATION\n\ | |
16014 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16015 | LINENUM, for that line in the current file,\n\ | |
16016 | FILE:LINENUM, for that line in that file,\n\ | |
16017 | +OFFSET, for that number of lines after the current line\n\ | |
16018 | or the start of the range\n\ | |
16019 | FUNCTION, for the first line in that function,\n\ | |
16020 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16021 | *ADDRESS, for the instruction at that address.\n\ | |
16022 | \n\ | |
16023 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16024 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16025 | range (including START-LOCATION and END-LOCATION).")); | |
16026 | ||
e7e0cddf | 16027 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16028 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16029 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16030 | location may be a linespec, explicit, or address location.\n" |
16031 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16032 | set_cmd_completer (c, location_completer); |
16033 | ||
16034 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16035 | dprintf_style_enums, &dprintf_style, _("\ | |
16036 | Set the style of usage for dynamic printf."), _("\ | |
16037 | Show the style of usage for dynamic printf."), _("\ | |
16038 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16039 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16040 | console, as with the \"printf\" command.\n\ | |
16041 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16042 | program; by default printf(), but you can choose a different function or\n\ | |
16043 | output stream by setting dprintf-function and dprintf-channel."), | |
16044 | update_dprintf_commands, NULL, | |
16045 | &setlist, &showlist); | |
16046 | ||
16047 | dprintf_function = xstrdup ("printf"); | |
16048 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16049 | &dprintf_function, _("\ | |
16050 | Set the function to use for dynamic printf"), _("\ | |
16051 | Show the function to use for dynamic printf"), NULL, | |
16052 | update_dprintf_commands, NULL, | |
16053 | &setlist, &showlist); | |
16054 | ||
16055 | dprintf_channel = xstrdup (""); | |
16056 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16057 | &dprintf_channel, _("\ | |
16058 | Set the channel to use for dynamic printf"), _("\ | |
16059 | Show the channel to use for dynamic printf"), NULL, | |
16060 | update_dprintf_commands, NULL, | |
16061 | &setlist, &showlist); | |
16062 | ||
d3ce09f5 SS |
16063 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16064 | &disconnected_dprintf, _("\ | |
16065 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16066 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16067 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16068 | even if GDB disconnects or detaches from the target."), | |
16069 | NULL, | |
16070 | NULL, | |
16071 | &setlist, &showlist); | |
16072 | ||
16073 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16074 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16075 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16076 | ||
765dc015 | 16077 | automatic_hardware_breakpoints = 1; |
f3b1572e | 16078 | |
76727919 TT |
16079 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16080 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16081 | } |