Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 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" |
0bb296cb | 71 | #include "cli/cli-style.h" |
d3ce09f5 | 72 | |
1042e4c0 SS |
73 | /* readline include files */ |
74 | #include "readline/readline.h" | |
75 | #include "readline/history.h" | |
76 | ||
77 | /* readline defines this. */ | |
78 | #undef savestring | |
79 | ||
034dad6f | 80 | #include "mi/mi-common.h" |
6dddc817 | 81 | #include "extension.h" |
325fac50 | 82 | #include <algorithm> |
5ed8105e | 83 | #include "progspace-and-thread.h" |
6c5b2ebe | 84 | #include "common/array-view.h" |
76f9c9cf | 85 | #include "common/gdb_optional.h" |
104c1213 | 86 | |
e7e8980f YQ |
87 | /* Enums for exception-handling support. */ |
88 | enum exception_event_kind | |
89 | { | |
90 | EX_EVENT_THROW, | |
591f19e8 | 91 | EX_EVENT_RETHROW, |
e7e8980f YQ |
92 | EX_EVENT_CATCH |
93 | }; | |
94 | ||
4a64f543 | 95 | /* Prototypes for local functions. */ |
c906108c | 96 | |
896b6bda | 97 | static void map_breakpoint_numbers (const char *, |
48649e1b | 98 | gdb::function_view<void (breakpoint *)>); |
c906108c | 99 | |
348d480f PA |
100 | static void breakpoint_re_set_default (struct breakpoint *); |
101 | ||
f00aae0f KS |
102 | static void |
103 | create_sals_from_location_default (const struct event_location *location, | |
104 | struct linespec_result *canonical, | |
105 | enum bptype type_wanted); | |
983af33b SDJ |
106 | |
107 | static void create_breakpoints_sal_default (struct gdbarch *, | |
108 | struct linespec_result *, | |
e1e01040 PA |
109 | gdb::unique_xmalloc_ptr<char>, |
110 | gdb::unique_xmalloc_ptr<char>, | |
111 | enum bptype, | |
983af33b SDJ |
112 | enum bpdisp, int, int, |
113 | int, | |
114 | const struct breakpoint_ops *, | |
44f238bb | 115 | int, int, int, unsigned); |
983af33b | 116 | |
6c5b2ebe PA |
117 | static std::vector<symtab_and_line> decode_location_default |
118 | (struct breakpoint *b, const struct event_location *location, | |
119 | struct program_space *search_pspace); | |
983af33b | 120 | |
a6535de1 TT |
121 | static int can_use_hardware_watchpoint |
122 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 123 | |
a14ed312 | 124 | static void mention (struct breakpoint *); |
c906108c | 125 | |
348d480f PA |
126 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
127 | enum bptype, | |
c0a91b2b | 128 | const struct breakpoint_ops *); |
3742cc8b YQ |
129 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
130 | const struct symtab_and_line *); | |
131 | ||
4a64f543 MS |
132 | /* This function is used in gdbtk sources and thus can not be made |
133 | static. */ | |
63c252f8 | 134 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 135 | struct symtab_and_line, |
c0a91b2b TT |
136 | enum bptype, |
137 | const struct breakpoint_ops *); | |
c906108c | 138 | |
06edf0c0 PA |
139 | static struct breakpoint * |
140 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
141 | enum bptype type, | |
a1aa2221 LM |
142 | const struct breakpoint_ops *ops, |
143 | int loc_enabled); | |
06edf0c0 | 144 | |
76897487 KB |
145 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
146 | ||
a6d9a66e UW |
147 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
148 | CORE_ADDR bpaddr, | |
88f7da05 | 149 | enum bptype bptype); |
76897487 | 150 | |
6c95b8df PA |
151 | static void describe_other_breakpoints (struct gdbarch *, |
152 | struct program_space *, CORE_ADDR, | |
5af949e3 | 153 | struct obj_section *, int); |
c906108c | 154 | |
85d721b8 PA |
155 | static int watchpoint_locations_match (struct bp_location *loc1, |
156 | struct bp_location *loc2); | |
157 | ||
f1310107 | 158 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 159 | const struct address_space *aspace, |
f1310107 TJB |
160 | CORE_ADDR addr); |
161 | ||
d35ae833 | 162 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 163 | const address_space *, |
d35ae833 PA |
164 | CORE_ADDR, int); |
165 | ||
834c0d03 | 166 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 167 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 168 | |
e514a9d6 | 169 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 170 | |
a14ed312 | 171 | static int hw_breakpoint_used_count (void); |
c906108c | 172 | |
a1398e0c PA |
173 | static int hw_watchpoint_use_count (struct breakpoint *); |
174 | ||
175 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
176 | enum bptype type, | |
177 | int *other_type_used); | |
c906108c | 178 | |
816338b5 SS |
179 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
180 | int count); | |
c906108c | 181 | |
fe3f5fa8 | 182 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
183 | static void incref_bp_location (struct bp_location *loc); |
184 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 185 | |
39d61571 | 186 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 187 | |
44702360 PA |
188 | /* update_global_location_list's modes of operation wrt to whether to |
189 | insert locations now. */ | |
190 | enum ugll_insert_mode | |
191 | { | |
192 | /* Don't insert any breakpoint locations into the inferior, only | |
193 | remove already-inserted locations that no longer should be | |
194 | inserted. Functions that delete a breakpoint or breakpoints | |
195 | should specify this mode, so that deleting a breakpoint doesn't | |
196 | have the side effect of inserting the locations of other | |
197 | breakpoints that are marked not-inserted, but should_be_inserted | |
198 | returns true on them. | |
199 | ||
200 | This behavior is useful is situations close to tear-down -- e.g., | |
201 | after an exec, while the target still has execution, but | |
202 | breakpoint shadows of the previous executable image should *NOT* | |
203 | be restored to the new image; or before detaching, where the | |
204 | target still has execution and wants to delete breakpoints from | |
205 | GDB's lists, and all breakpoints had already been removed from | |
206 | the inferior. */ | |
207 | UGLL_DONT_INSERT, | |
208 | ||
a25a5a45 PA |
209 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
210 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
211 | UGLL_MAY_INSERT, |
212 | ||
a25a5a45 PA |
213 | /* Insert locations now, irrespective of |
214 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
215 | stopped right now, and the user did "continue". We need to | |
216 | insert breakpoints _before_ resuming the target, but | |
217 | UGLL_MAY_INSERT wouldn't insert them, because | |
218 | breakpoints_should_be_inserted_now returns false at that point, | |
219 | as no thread is running yet. */ | |
04086b45 | 220 | UGLL_INSERT |
44702360 PA |
221 | }; |
222 | ||
223 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 224 | |
44702360 | 225 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 226 | |
d77f58be | 227 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
228 | |
229 | static void insert_breakpoint_locations (void); | |
a5606eee | 230 | |
0b39b52e | 231 | static void trace_pass_command (const char *, int); |
1042e4c0 | 232 | |
558a9d82 YQ |
233 | static void set_tracepoint_count (int num); |
234 | ||
9c06b0b4 TJB |
235 | static int is_masked_watchpoint (const struct breakpoint *b); |
236 | ||
b775012e LM |
237 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
238 | ||
983af33b SDJ |
239 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
240 | otherwise. */ | |
241 | ||
242 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 243 | |
2060206e PA |
244 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
245 | that are implemented on top of software or hardware breakpoints | |
246 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
247 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
248 | ||
249 | /* Internal breakpoints class type. */ | |
06edf0c0 | 250 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
251 | |
252 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
253 | static struct breakpoint_ops momentary_breakpoint_ops; |
254 | ||
2060206e PA |
255 | /* The breakpoint_ops structure to be used in regular user created |
256 | breakpoints. */ | |
257 | struct breakpoint_ops bkpt_breakpoint_ops; | |
258 | ||
55aa24fb SDJ |
259 | /* Breakpoints set on probes. */ |
260 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
261 | ||
e7e0cddf | 262 | /* Dynamic printf class type. */ |
c5867ab6 | 263 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 264 | |
d3ce09f5 SS |
265 | /* The style in which to perform a dynamic printf. This is a user |
266 | option because different output options have different tradeoffs; | |
267 | if GDB does the printing, there is better error handling if there | |
268 | is a problem with any of the arguments, but using an inferior | |
269 | function lets you have special-purpose printers and sending of | |
270 | output to the same place as compiled-in print functions. */ | |
271 | ||
272 | static const char dprintf_style_gdb[] = "gdb"; | |
273 | static const char dprintf_style_call[] = "call"; | |
274 | static const char dprintf_style_agent[] = "agent"; | |
275 | static const char *const dprintf_style_enums[] = { | |
276 | dprintf_style_gdb, | |
277 | dprintf_style_call, | |
278 | dprintf_style_agent, | |
279 | NULL | |
280 | }; | |
281 | static const char *dprintf_style = dprintf_style_gdb; | |
282 | ||
283 | /* The function to use for dynamic printf if the preferred style is to | |
284 | call into the inferior. The value is simply a string that is | |
285 | copied into the command, so it can be anything that GDB can | |
286 | evaluate to a callable address, not necessarily a function name. */ | |
287 | ||
bde6261a | 288 | static char *dprintf_function; |
d3ce09f5 SS |
289 | |
290 | /* The channel to use for dynamic printf if the preferred style is to | |
291 | call into the inferior; if a nonempty string, it will be passed to | |
292 | the call as the first argument, with the format string as the | |
293 | second. As with the dprintf function, this can be anything that | |
294 | GDB knows how to evaluate, so in addition to common choices like | |
295 | "stderr", this could be an app-specific expression like | |
296 | "mystreams[curlogger]". */ | |
297 | ||
bde6261a | 298 | static char *dprintf_channel; |
d3ce09f5 SS |
299 | |
300 | /* True if dprintf commands should continue to operate even if GDB | |
301 | has disconnected. */ | |
302 | static int disconnected_dprintf = 1; | |
303 | ||
5cea2a26 PA |
304 | struct command_line * |
305 | breakpoint_commands (struct breakpoint *b) | |
306 | { | |
d1b0a7bf | 307 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 308 | } |
3daf8fe5 | 309 | |
f3b1572e PA |
310 | /* Flag indicating that a command has proceeded the inferior past the |
311 | current breakpoint. */ | |
312 | ||
313 | static int breakpoint_proceeded; | |
314 | ||
956a9fb9 | 315 | const char * |
2cec12e5 AR |
316 | bpdisp_text (enum bpdisp disp) |
317 | { | |
4a64f543 MS |
318 | /* NOTE: the following values are a part of MI protocol and |
319 | represent values of 'disp' field returned when inferior stops at | |
320 | a breakpoint. */ | |
bc043ef3 | 321 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 322 | |
2cec12e5 AR |
323 | return bpdisps[(int) disp]; |
324 | } | |
c906108c | 325 | |
4a64f543 | 326 | /* Prototypes for exported functions. */ |
c906108c | 327 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 328 | if such is available. */ |
c906108c SS |
329 | static int can_use_hw_watchpoints; |
330 | ||
920d2a44 AC |
331 | static void |
332 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
333 | struct cmd_list_element *c, | |
334 | const char *value) | |
335 | { | |
3e43a32a MS |
336 | fprintf_filtered (file, |
337 | _("Debugger's willingness to use " | |
338 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
339 | value); |
340 | } | |
341 | ||
fa8d40ab JJ |
342 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
343 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 344 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
345 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
346 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
347 | static void |
348 | show_pending_break_support (struct ui_file *file, int from_tty, | |
349 | struct cmd_list_element *c, | |
350 | const char *value) | |
351 | { | |
3e43a32a MS |
352 | fprintf_filtered (file, |
353 | _("Debugger's behavior regarding " | |
354 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
355 | value); |
356 | } | |
fa8d40ab | 357 | |
765dc015 | 358 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 359 | set with "break" but falling in read-only memory. |
765dc015 VP |
360 | If 0, gdb will warn about such breakpoints, but won't automatically |
361 | use hardware breakpoints. */ | |
362 | static int automatic_hardware_breakpoints; | |
363 | static void | |
364 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
365 | struct cmd_list_element *c, | |
366 | const char *value) | |
367 | { | |
3e43a32a MS |
368 | fprintf_filtered (file, |
369 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
370 | value); |
371 | } | |
372 | ||
a25a5a45 PA |
373 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
374 | stopped, and immediately inserts any new breakpoints as soon as | |
375 | they're created. If off (default), GDB keeps breakpoints off of | |
376 | the target as long as possible. That is, it delays inserting | |
377 | breakpoints until the next resume, and removes them again when the | |
378 | target fully stops. This is a bit safer in case GDB crashes while | |
379 | processing user input. */ | |
380 | static int always_inserted_mode = 0; | |
72d0e2c5 | 381 | |
33e5cbd6 | 382 | static void |
74960c60 | 383 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 384 | struct cmd_list_element *c, const char *value) |
74960c60 | 385 | { |
a25a5a45 PA |
386 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
387 | value); | |
74960c60 VP |
388 | } |
389 | ||
b57bacec PA |
390 | /* See breakpoint.h. */ |
391 | ||
33e5cbd6 | 392 | int |
a25a5a45 | 393 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 394 | { |
a25a5a45 PA |
395 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
396 | { | |
397 | /* If breakpoints are global, they should be inserted even if no | |
398 | thread under gdb's control is running, or even if there are | |
399 | no threads under GDB's control yet. */ | |
400 | return 1; | |
401 | } | |
402 | else if (target_has_execution) | |
403 | { | |
a25a5a45 PA |
404 | if (always_inserted_mode) |
405 | { | |
406 | /* The user wants breakpoints inserted even if all threads | |
407 | are stopped. */ | |
408 | return 1; | |
409 | } | |
410 | ||
b57bacec PA |
411 | if (threads_are_executing ()) |
412 | return 1; | |
372316f1 PA |
413 | |
414 | /* Don't remove breakpoints yet if, even though all threads are | |
415 | stopped, we still have events to process. */ | |
08036331 | 416 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
417 | if (tp->resumed |
418 | && tp->suspend.waitstatus_pending_p) | |
419 | return 1; | |
a25a5a45 PA |
420 | } |
421 | return 0; | |
33e5cbd6 | 422 | } |
765dc015 | 423 | |
b775012e LM |
424 | static const char condition_evaluation_both[] = "host or target"; |
425 | ||
426 | /* Modes for breakpoint condition evaluation. */ | |
427 | static const char condition_evaluation_auto[] = "auto"; | |
428 | static const char condition_evaluation_host[] = "host"; | |
429 | static const char condition_evaluation_target[] = "target"; | |
430 | static const char *const condition_evaluation_enums[] = { | |
431 | condition_evaluation_auto, | |
432 | condition_evaluation_host, | |
433 | condition_evaluation_target, | |
434 | NULL | |
435 | }; | |
436 | ||
437 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
438 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
439 | ||
440 | /* Global that we use to display information to the user (gets its value from | |
441 | condition_evaluation_mode_1. */ | |
442 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
443 | ||
444 | /* Translate a condition evaluation mode MODE into either "host" | |
445 | or "target". This is used mostly to translate from "auto" to the | |
446 | real setting that is being used. It returns the translated | |
447 | evaluation mode. */ | |
448 | ||
449 | static const char * | |
450 | translate_condition_evaluation_mode (const char *mode) | |
451 | { | |
452 | if (mode == condition_evaluation_auto) | |
453 | { | |
454 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
455 | return condition_evaluation_target; | |
456 | else | |
457 | return condition_evaluation_host; | |
458 | } | |
459 | else | |
460 | return mode; | |
461 | } | |
462 | ||
463 | /* Discovers what condition_evaluation_auto translates to. */ | |
464 | ||
465 | static const char * | |
466 | breakpoint_condition_evaluation_mode (void) | |
467 | { | |
468 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
469 | } | |
470 | ||
471 | /* Return true if GDB should evaluate breakpoint conditions or false | |
472 | otherwise. */ | |
473 | ||
474 | static int | |
475 | gdb_evaluates_breakpoint_condition_p (void) | |
476 | { | |
477 | const char *mode = breakpoint_condition_evaluation_mode (); | |
478 | ||
479 | return (mode == condition_evaluation_host); | |
480 | } | |
481 | ||
c906108c SS |
482 | /* Are we executing breakpoint commands? */ |
483 | static int executing_breakpoint_commands; | |
484 | ||
c02f5703 MS |
485 | /* Are overlay event breakpoints enabled? */ |
486 | static int overlay_events_enabled; | |
487 | ||
e09342b5 TJB |
488 | /* See description in breakpoint.h. */ |
489 | int target_exact_watchpoints = 0; | |
490 | ||
c906108c | 491 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 492 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 493 | current breakpoint. */ |
c906108c | 494 | |
5c44784c | 495 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 496 | |
5c44784c JM |
497 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
498 | for (B = breakpoint_chain; \ | |
499 | B ? (TMP=B->next, 1): 0; \ | |
500 | B = TMP) | |
c906108c | 501 | |
4a64f543 MS |
502 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
503 | not provided so update_global_location_list must not be called | |
504 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 505 | |
876fa593 | 506 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
507 | for (BP_TMP = bp_locations; \ |
508 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 509 | BP_TMP++) |
7cc221ef | 510 | |
b775012e LM |
511 | /* Iterates through locations with address ADDRESS for the currently selected |
512 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
513 | to where the loop should start from. | |
514 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
515 | appropriate location to start with. */ | |
516 | ||
517 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
518 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
519 | BP_LOCP_TMP = BP_LOCP_START; \ | |
520 | BP_LOCP_START \ | |
f5336ca5 | 521 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
522 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
523 | BP_LOCP_TMP++) | |
524 | ||
1042e4c0 SS |
525 | /* Iterator for tracepoints only. */ |
526 | ||
527 | #define ALL_TRACEPOINTS(B) \ | |
528 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 529 | if (is_tracepoint (B)) |
1042e4c0 | 530 | |
7cc221ef | 531 | /* Chains of all breakpoints defined. */ |
c906108c SS |
532 | |
533 | struct breakpoint *breakpoint_chain; | |
534 | ||
f5336ca5 | 535 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 536 | |
f5336ca5 | 537 | static struct bp_location **bp_locations; |
876fa593 | 538 | |
f5336ca5 | 539 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 540 | |
f5336ca5 | 541 | static unsigned bp_locations_count; |
876fa593 | 542 | |
4a64f543 | 543 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 544 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 545 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 546 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 547 | an address you need to read. */ |
876fa593 | 548 | |
f5336ca5 | 549 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 550 | |
4a64f543 MS |
551 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
552 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
553 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
554 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 555 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 556 | |
f5336ca5 | 557 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 558 | |
4a64f543 | 559 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
560 | from the bp_locations array, but for which a hit may still be |
561 | reported by a target. */ | |
1123588c | 562 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 563 | |
c906108c SS |
564 | /* Number of last breakpoint made. */ |
565 | ||
95a42b64 TT |
566 | static int breakpoint_count; |
567 | ||
86b17b60 PA |
568 | /* The value of `breakpoint_count' before the last command that |
569 | created breakpoints. If the last (break-like) command created more | |
570 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
571 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
572 | static int prev_breakpoint_count; | |
c906108c | 573 | |
1042e4c0 SS |
574 | /* Number of last tracepoint made. */ |
575 | ||
95a42b64 | 576 | static int tracepoint_count; |
1042e4c0 | 577 | |
6149aea9 PA |
578 | static struct cmd_list_element *breakpoint_set_cmdlist; |
579 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 580 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 581 | |
badd37ce SDJ |
582 | /* See declaration at breakpoint.h. */ |
583 | ||
584 | struct breakpoint * | |
585 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
586 | void *user_data) | |
587 | { | |
588 | struct breakpoint *b = NULL; | |
589 | ||
590 | ALL_BREAKPOINTS (b) | |
591 | { | |
592 | if (func (b, user_data) != 0) | |
593 | break; | |
594 | } | |
595 | ||
596 | return b; | |
597 | } | |
598 | ||
468d015d JJ |
599 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
600 | static int | |
601 | breakpoint_enabled (struct breakpoint *b) | |
602 | { | |
0d381245 | 603 | return (b->enable_state == bp_enabled); |
468d015d JJ |
604 | } |
605 | ||
c906108c SS |
606 | /* Set breakpoint count to NUM. */ |
607 | ||
95a42b64 | 608 | static void |
fba45db2 | 609 | set_breakpoint_count (int num) |
c906108c | 610 | { |
86b17b60 | 611 | prev_breakpoint_count = breakpoint_count; |
c906108c | 612 | breakpoint_count = num; |
4fa62494 | 613 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
614 | } |
615 | ||
86b17b60 PA |
616 | /* Used by `start_rbreak_breakpoints' below, to record the current |
617 | breakpoint count before "rbreak" creates any breakpoint. */ | |
618 | static int rbreak_start_breakpoint_count; | |
619 | ||
95a42b64 TT |
620 | /* Called at the start an "rbreak" command to record the first |
621 | breakpoint made. */ | |
86b17b60 | 622 | |
c80049d3 | 623 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 624 | { |
86b17b60 | 625 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
626 | } |
627 | ||
628 | /* Called at the end of an "rbreak" command to record the last | |
629 | breakpoint made. */ | |
86b17b60 | 630 | |
c80049d3 | 631 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 632 | { |
86b17b60 | 633 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
634 | } |
635 | ||
4a64f543 | 636 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
637 | |
638 | void | |
fba45db2 | 639 | clear_breakpoint_hit_counts (void) |
c906108c SS |
640 | { |
641 | struct breakpoint *b; | |
642 | ||
643 | ALL_BREAKPOINTS (b) | |
644 | b->hit_count = 0; | |
645 | } | |
646 | ||
c906108c | 647 | \f |
48cb2d85 VP |
648 | /* Return the breakpoint with the specified number, or NULL |
649 | if the number does not refer to an existing breakpoint. */ | |
650 | ||
651 | struct breakpoint * | |
652 | get_breakpoint (int num) | |
653 | { | |
654 | struct breakpoint *b; | |
655 | ||
656 | ALL_BREAKPOINTS (b) | |
657 | if (b->number == num) | |
658 | return b; | |
659 | ||
660 | return NULL; | |
661 | } | |
5c44784c | 662 | |
c906108c | 663 | \f |
adc36818 | 664 | |
b775012e LM |
665 | /* Mark locations as "conditions have changed" in case the target supports |
666 | evaluating conditions on its side. */ | |
667 | ||
668 | static void | |
669 | mark_breakpoint_modified (struct breakpoint *b) | |
670 | { | |
671 | struct bp_location *loc; | |
672 | ||
673 | /* This is only meaningful if the target is | |
674 | evaluating conditions and if the user has | |
675 | opted for condition evaluation on the target's | |
676 | side. */ | |
677 | if (gdb_evaluates_breakpoint_condition_p () | |
678 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
679 | return; | |
680 | ||
681 | if (!is_breakpoint (b)) | |
682 | return; | |
683 | ||
684 | for (loc = b->loc; loc; loc = loc->next) | |
685 | loc->condition_changed = condition_modified; | |
686 | } | |
687 | ||
688 | /* Mark location as "conditions have changed" in case the target supports | |
689 | evaluating conditions on its side. */ | |
690 | ||
691 | static void | |
692 | mark_breakpoint_location_modified (struct bp_location *loc) | |
693 | { | |
694 | /* This is only meaningful if the target is | |
695 | evaluating conditions and if the user has | |
696 | opted for condition evaluation on the target's | |
697 | side. */ | |
698 | if (gdb_evaluates_breakpoint_condition_p () | |
699 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
700 | ||
701 | return; | |
702 | ||
703 | if (!is_breakpoint (loc->owner)) | |
704 | return; | |
705 | ||
706 | loc->condition_changed = condition_modified; | |
707 | } | |
708 | ||
709 | /* Sets the condition-evaluation mode using the static global | |
710 | condition_evaluation_mode. */ | |
711 | ||
712 | static void | |
eb4c3f4a | 713 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
714 | struct cmd_list_element *c) |
715 | { | |
b775012e LM |
716 | const char *old_mode, *new_mode; |
717 | ||
718 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
719 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
720 | { | |
721 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
722 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
723 | "Using host evaluation mode instead.")); | |
724 | return; | |
725 | } | |
726 | ||
727 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
728 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
729 | ||
abf1152a JK |
730 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
731 | settings was "auto". */ | |
732 | condition_evaluation_mode = condition_evaluation_mode_1; | |
733 | ||
b775012e LM |
734 | /* Only update the mode if the user picked a different one. */ |
735 | if (new_mode != old_mode) | |
736 | { | |
737 | struct bp_location *loc, **loc_tmp; | |
738 | /* If the user switched to a different evaluation mode, we | |
739 | need to synch the changes with the target as follows: | |
740 | ||
741 | "host" -> "target": Send all (valid) conditions to the target. | |
742 | "target" -> "host": Remove all the conditions from the target. | |
743 | */ | |
744 | ||
b775012e LM |
745 | if (new_mode == condition_evaluation_target) |
746 | { | |
747 | /* Mark everything modified and synch conditions with the | |
748 | target. */ | |
749 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
750 | mark_breakpoint_location_modified (loc); | |
751 | } | |
752 | else | |
753 | { | |
754 | /* Manually mark non-duplicate locations to synch conditions | |
755 | with the target. We do this to remove all the conditions the | |
756 | target knows about. */ | |
757 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
758 | if (is_breakpoint (loc->owner) && loc->inserted) | |
759 | loc->needs_update = 1; | |
760 | } | |
761 | ||
762 | /* Do the update. */ | |
44702360 | 763 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
764 | } |
765 | ||
766 | return; | |
767 | } | |
768 | ||
769 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
770 | what "auto" is translating to. */ | |
771 | ||
772 | static void | |
773 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
774 | struct cmd_list_element *c, const char *value) | |
775 | { | |
776 | if (condition_evaluation_mode == condition_evaluation_auto) | |
777 | fprintf_filtered (file, | |
778 | _("Breakpoint condition evaluation " | |
779 | "mode is %s (currently %s).\n"), | |
780 | value, | |
781 | breakpoint_condition_evaluation_mode ()); | |
782 | else | |
783 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
784 | value); | |
785 | } | |
786 | ||
787 | /* A comparison function for bp_location AP and BP that is used by | |
788 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 789 | the more general bp_locations_compare function. */ |
b775012e LM |
790 | |
791 | static int | |
f5336ca5 | 792 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 793 | { |
9a3c8263 SM |
794 | const struct bp_location *a = *(const struct bp_location **) ap; |
795 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
796 | |
797 | if (a->address == b->address) | |
798 | return 0; | |
799 | else | |
800 | return ((a->address > b->address) - (a->address < b->address)); | |
801 | } | |
802 | ||
803 | /* Helper function to skip all bp_locations with addresses | |
804 | less than ADDRESS. It returns the first bp_location that | |
805 | is greater than or equal to ADDRESS. If none is found, just | |
806 | return NULL. */ | |
807 | ||
808 | static struct bp_location ** | |
809 | get_first_locp_gte_addr (CORE_ADDR address) | |
810 | { | |
811 | struct bp_location dummy_loc; | |
812 | struct bp_location *dummy_locp = &dummy_loc; | |
813 | struct bp_location **locp_found = NULL; | |
814 | ||
815 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
816 | dummy_loc.address = address; |
817 | ||
818 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 819 | locp_found = ((struct bp_location **) |
f5336ca5 | 820 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 821 | sizeof (struct bp_location **), |
f5336ca5 | 822 | bp_locations_compare_addrs)); |
b775012e LM |
823 | |
824 | /* Nothing was found, nothing left to do. */ | |
825 | if (locp_found == NULL) | |
826 | return NULL; | |
827 | ||
828 | /* We may have found a location that is at ADDRESS but is not the first in the | |
829 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 830 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
831 | && (*(locp_found - 1))->address == address) |
832 | locp_found--; | |
833 | ||
834 | return locp_found; | |
835 | } | |
836 | ||
adc36818 | 837 | void |
7a26bd4d | 838 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
839 | int from_tty) |
840 | { | |
3a5c3e22 PA |
841 | xfree (b->cond_string); |
842 | b->cond_string = NULL; | |
adc36818 | 843 | |
3a5c3e22 | 844 | if (is_watchpoint (b)) |
adc36818 | 845 | { |
3a5c3e22 PA |
846 | struct watchpoint *w = (struct watchpoint *) b; |
847 | ||
4d01a485 | 848 | w->cond_exp.reset (); |
3a5c3e22 PA |
849 | } |
850 | else | |
851 | { | |
852 | struct bp_location *loc; | |
853 | ||
854 | for (loc = b->loc; loc; loc = loc->next) | |
855 | { | |
4d01a485 | 856 | loc->cond.reset (); |
b775012e LM |
857 | |
858 | /* No need to free the condition agent expression | |
859 | bytecode (if we have one). We will handle this | |
860 | when we go through update_global_location_list. */ | |
3a5c3e22 | 861 | } |
adc36818 | 862 | } |
adc36818 PM |
863 | |
864 | if (*exp == 0) | |
865 | { | |
866 | if (from_tty) | |
867 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
868 | } | |
869 | else | |
870 | { | |
bbc13ae3 | 871 | const char *arg = exp; |
cc59ec59 | 872 | |
adc36818 PM |
873 | /* I don't know if it matters whether this is the string the user |
874 | typed in or the decompiled expression. */ | |
875 | b->cond_string = xstrdup (arg); | |
876 | b->condition_not_parsed = 0; | |
877 | ||
878 | if (is_watchpoint (b)) | |
879 | { | |
3a5c3e22 PA |
880 | struct watchpoint *w = (struct watchpoint *) b; |
881 | ||
aee1fcdf | 882 | innermost_block.reset (); |
adc36818 | 883 | arg = exp; |
1bb9788d | 884 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
885 | if (*arg) |
886 | error (_("Junk at end of expression")); | |
aee1fcdf | 887 | w->cond_exp_valid_block = innermost_block.block (); |
adc36818 PM |
888 | } |
889 | else | |
890 | { | |
3a5c3e22 PA |
891 | struct bp_location *loc; |
892 | ||
adc36818 PM |
893 | for (loc = b->loc; loc; loc = loc->next) |
894 | { | |
895 | arg = exp; | |
896 | loc->cond = | |
1bb9788d TT |
897 | parse_exp_1 (&arg, loc->address, |
898 | block_for_pc (loc->address), 0); | |
adc36818 PM |
899 | if (*arg) |
900 | error (_("Junk at end of expression")); | |
901 | } | |
902 | } | |
903 | } | |
b775012e LM |
904 | mark_breakpoint_modified (b); |
905 | ||
76727919 | 906 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
907 | } |
908 | ||
d55637df TT |
909 | /* Completion for the "condition" command. */ |
910 | ||
eb3ff9a5 | 911 | static void |
6f937416 | 912 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 913 | completion_tracker &tracker, |
6f937416 | 914 | const char *text, const char *word) |
d55637df | 915 | { |
6f937416 | 916 | const char *space; |
d55637df | 917 | |
f1735a53 TT |
918 | text = skip_spaces (text); |
919 | space = skip_to_space (text); | |
d55637df TT |
920 | if (*space == '\0') |
921 | { | |
922 | int len; | |
923 | struct breakpoint *b; | |
d55637df TT |
924 | |
925 | if (text[0] == '$') | |
926 | { | |
927 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
928 | if (!isdigit (text[1])) |
929 | complete_internalvar (tracker, &text[1]); | |
930 | return; | |
d55637df TT |
931 | } |
932 | ||
933 | /* We're completing the breakpoint number. */ | |
934 | len = strlen (text); | |
935 | ||
936 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
937 | { |
938 | char number[50]; | |
939 | ||
940 | xsnprintf (number, sizeof (number), "%d", b->number); | |
941 | ||
942 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
943 | { |
944 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
945 | tracker.add_completion (std::move (copy)); | |
946 | } | |
58ce7251 | 947 | } |
d55637df | 948 | |
eb3ff9a5 | 949 | return; |
d55637df TT |
950 | } |
951 | ||
952 | /* We're completing the expression part. */ | |
f1735a53 | 953 | text = skip_spaces (space); |
eb3ff9a5 | 954 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
955 | } |
956 | ||
c906108c SS |
957 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
958 | ||
959 | static void | |
0b39b52e | 960 | condition_command (const char *arg, int from_tty) |
c906108c | 961 | { |
52f0bd74 | 962 | struct breakpoint *b; |
0b39b52e | 963 | const char *p; |
52f0bd74 | 964 | int bnum; |
c906108c SS |
965 | |
966 | if (arg == 0) | |
e2e0b3e5 | 967 | error_no_arg (_("breakpoint number")); |
c906108c SS |
968 | |
969 | p = arg; | |
970 | bnum = get_number (&p); | |
5c44784c | 971 | if (bnum == 0) |
8a3fe4f8 | 972 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
973 | |
974 | ALL_BREAKPOINTS (b) | |
975 | if (b->number == bnum) | |
2f069f6f | 976 | { |
6dddc817 DE |
977 | /* Check if this breakpoint has a "stop" method implemented in an |
978 | extension language. This method and conditions entered into GDB | |
979 | from the CLI are mutually exclusive. */ | |
980 | const struct extension_language_defn *extlang | |
981 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
982 | ||
983 | if (extlang != NULL) | |
984 | { | |
985 | error (_("Only one stop condition allowed. There is currently" | |
986 | " a %s stop condition defined for this breakpoint."), | |
987 | ext_lang_capitalized_name (extlang)); | |
988 | } | |
2566ad2d | 989 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
990 | |
991 | if (is_breakpoint (b)) | |
44702360 | 992 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 993 | |
2f069f6f JB |
994 | return; |
995 | } | |
c906108c | 996 | |
8a3fe4f8 | 997 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
998 | } |
999 | ||
a7bdde9e VP |
1000 | /* Check that COMMAND do not contain commands that are suitable |
1001 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1002 | Throw if any such commands is found. */ |
1003 | ||
a7bdde9e VP |
1004 | static void |
1005 | check_no_tracepoint_commands (struct command_line *commands) | |
1006 | { | |
1007 | struct command_line *c; | |
cc59ec59 | 1008 | |
a7bdde9e VP |
1009 | for (c = commands; c; c = c->next) |
1010 | { | |
a7bdde9e | 1011 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1012 | error (_("The 'while-stepping' command can " |
1013 | "only be used for tracepoints")); | |
a7bdde9e | 1014 | |
12973681 TT |
1015 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1016 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1017 | |
1018 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1019 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1020 | command directly. */ |
1021 | if (strstr (c->line, "collect ") == c->line) | |
1022 | error (_("The 'collect' command can only be used for tracepoints")); | |
1023 | ||
51661e93 VP |
1024 | if (strstr (c->line, "teval ") == c->line) |
1025 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1026 | } |
1027 | } | |
1028 | ||
c1fc2657 | 1029 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1030 | { |
c1fc2657 | 1031 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1032 | }; |
1033 | ||
d77f58be SS |
1034 | /* Encapsulate tests for different types of tracepoints. */ |
1035 | ||
3b0871f4 SM |
1036 | static bool |
1037 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1038 | { |
1039 | return (type == bp_tracepoint | |
1040 | || type == bp_fast_tracepoint | |
1041 | || type == bp_static_tracepoint); | |
1042 | } | |
1043 | ||
3b0871f4 SM |
1044 | static bool |
1045 | is_longjmp_type (bptype type) | |
1046 | { | |
1047 | return type == bp_longjmp || type == bp_exception; | |
1048 | } | |
1049 | ||
a7bdde9e | 1050 | int |
d77f58be | 1051 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1052 | { |
d9b3f62e | 1053 | return is_tracepoint_type (b->type); |
a7bdde9e | 1054 | } |
d9b3f62e | 1055 | |
a5e364af SM |
1056 | /* Factory function to create an appropriate instance of breakpoint given |
1057 | TYPE. */ | |
1058 | ||
1059 | static std::unique_ptr<breakpoint> | |
1060 | new_breakpoint_from_type (bptype type) | |
1061 | { | |
1062 | breakpoint *b; | |
1063 | ||
1064 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1065 | b = new tracepoint (); |
3b0871f4 | 1066 | else if (is_longjmp_type (type)) |
c1fc2657 | 1067 | b = new longjmp_breakpoint (); |
a5e364af SM |
1068 | else |
1069 | b = new breakpoint (); | |
1070 | ||
1071 | return std::unique_ptr<breakpoint> (b); | |
1072 | } | |
1073 | ||
e5dd4106 | 1074 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1075 | breakpoint. This function will throw an exception if a problem is |
1076 | found. */ | |
48cb2d85 | 1077 | |
95a42b64 TT |
1078 | static void |
1079 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1080 | struct command_line *commands) | |
48cb2d85 | 1081 | { |
d77f58be | 1082 | if (is_tracepoint (b)) |
a7bdde9e | 1083 | { |
c9a6ce02 | 1084 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1085 | struct command_line *c; |
1086 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1087 | |
1088 | /* Reset the while-stepping step count. The previous commands | |
1089 | might have included a while-stepping action, while the new | |
1090 | ones might not. */ | |
1091 | t->step_count = 0; | |
1092 | ||
1093 | /* We need to verify that each top-level element of commands is | |
1094 | valid for tracepoints, that there's at most one | |
1095 | while-stepping element, and that the while-stepping's body | |
1096 | has valid tracing commands excluding nested while-stepping. | |
1097 | We also need to validate the tracepoint action line in the | |
1098 | context of the tracepoint --- validate_actionline actually | |
1099 | has side effects, like setting the tracepoint's | |
1100 | while-stepping STEP_COUNT, in addition to checking if the | |
1101 | collect/teval actions parse and make sense in the | |
1102 | tracepoint's context. */ | |
a7bdde9e VP |
1103 | for (c = commands; c; c = c->next) |
1104 | { | |
a7bdde9e VP |
1105 | if (c->control_type == while_stepping_control) |
1106 | { | |
1107 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1108 | error (_("The 'while-stepping' command " |
1109 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1110 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1111 | error (_("The 'while-stepping' command " |
1112 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1113 | |
1114 | if (while_stepping) | |
3e43a32a MS |
1115 | error (_("The 'while-stepping' command " |
1116 | "can be used only once")); | |
a7bdde9e VP |
1117 | else |
1118 | while_stepping = c; | |
1119 | } | |
c9a6ce02 PA |
1120 | |
1121 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1122 | } |
1123 | if (while_stepping) | |
1124 | { | |
1125 | struct command_line *c2; | |
1126 | ||
12973681 TT |
1127 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1128 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1129 | for (; c2; c2 = c2->next) |
1130 | { | |
a7bdde9e VP |
1131 | if (c2->control_type == while_stepping_control) |
1132 | error (_("The 'while-stepping' command cannot be nested")); | |
1133 | } | |
1134 | } | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | check_no_tracepoint_commands (commands); | |
1139 | } | |
95a42b64 TT |
1140 | } |
1141 | ||
0fb4aa4b PA |
1142 | /* Return a vector of all the static tracepoints set at ADDR. The |
1143 | caller is responsible for releasing the vector. */ | |
1144 | ||
f51e0e20 | 1145 | std::vector<breakpoint *> |
0fb4aa4b PA |
1146 | static_tracepoints_here (CORE_ADDR addr) |
1147 | { | |
1148 | struct breakpoint *b; | |
f51e0e20 | 1149 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1150 | struct bp_location *loc; |
1151 | ||
1152 | ALL_BREAKPOINTS (b) | |
1153 | if (b->type == bp_static_tracepoint) | |
1154 | { | |
1155 | for (loc = b->loc; loc; loc = loc->next) | |
1156 | if (loc->address == addr) | |
f51e0e20 | 1157 | found.push_back (b); |
0fb4aa4b PA |
1158 | } |
1159 | ||
1160 | return found; | |
1161 | } | |
1162 | ||
95a42b64 | 1163 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1164 | validate that only allowed commands are included. */ |
95a42b64 TT |
1165 | |
1166 | void | |
4a64f543 | 1167 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1168 | counted_command_line &&commands) |
95a42b64 | 1169 | { |
93921405 | 1170 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1171 | |
d1b0a7bf | 1172 | b->commands = std::move (commands); |
76727919 | 1173 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1174 | } |
1175 | ||
45a43567 TT |
1176 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1177 | is not the same as the "silent" that may appear in the breakpoint's | |
1178 | commands. */ | |
1179 | ||
1180 | void | |
1181 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1182 | { | |
1183 | int old_silent = b->silent; | |
1184 | ||
1185 | b->silent = silent; | |
1186 | if (old_silent != silent) | |
76727919 | 1187 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1188 | } |
1189 | ||
1190 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1191 | breakpoint work for any thread. */ | |
1192 | ||
1193 | void | |
1194 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1195 | { | |
1196 | int old_thread = b->thread; | |
1197 | ||
1198 | b->thread = thread; | |
1199 | if (old_thread != thread) | |
76727919 | 1200 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1201 | } |
1202 | ||
1203 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1204 | breakpoint work for any task. */ | |
1205 | ||
1206 | void | |
1207 | breakpoint_set_task (struct breakpoint *b, int task) | |
1208 | { | |
1209 | int old_task = b->task; | |
1210 | ||
1211 | b->task = task; | |
1212 | if (old_task != task) | |
76727919 | 1213 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1214 | } |
1215 | ||
95a42b64 | 1216 | static void |
896b6bda | 1217 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1218 | struct command_line *control) |
95a42b64 | 1219 | { |
d1b0a7bf | 1220 | counted_command_line cmd; |
999700cd PW |
1221 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1222 | NULL after the call to read_command_lines if the user provides an empty | |
1223 | list of command by just typing "end". */ | |
1224 | bool cmd_read = false; | |
95a42b64 | 1225 | |
896b6bda PA |
1226 | std::string new_arg; |
1227 | ||
95a42b64 TT |
1228 | if (arg == NULL || !*arg) |
1229 | { | |
86b17b60 | 1230 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1231 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1232 | breakpoint_count); | |
95a42b64 | 1233 | else if (breakpoint_count > 0) |
896b6bda | 1234 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1235 | arg = new_arg.c_str (); |
1236 | } | |
1237 | ||
1238 | map_breakpoint_numbers | |
1239 | (arg, [&] (breakpoint *b) | |
1240 | { | |
999700cd | 1241 | if (!cmd_read) |
48649e1b | 1242 | { |
999700cd | 1243 | gdb_assert (cmd == NULL); |
48649e1b | 1244 | if (control != NULL) |
12973681 | 1245 | cmd = control->body_list_0; |
48649e1b TT |
1246 | else |
1247 | { | |
81b1e71c TT |
1248 | std::string str |
1249 | = string_printf (_("Type commands for breakpoint(s) " | |
1250 | "%s, one per line."), | |
1251 | arg); | |
48649e1b | 1252 | |
60b3cef2 TT |
1253 | auto do_validate = [=] (const char *line) |
1254 | { | |
1255 | validate_actionline (line, b); | |
1256 | }; | |
1257 | gdb::function_view<void (const char *)> validator; | |
1258 | if (is_tracepoint (b)) | |
1259 | validator = do_validate; | |
1260 | ||
1261 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1262 | } |
999700cd | 1263 | cmd_read = true; |
48649e1b TT |
1264 | } |
1265 | ||
1266 | /* If a breakpoint was on the list more than once, we don't need to | |
1267 | do anything. */ | |
1268 | if (b->commands != cmd) | |
1269 | { | |
d1b0a7bf | 1270 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1271 | b->commands = cmd; |
76727919 | 1272 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1273 | } |
1274 | }); | |
95a42b64 TT |
1275 | } |
1276 | ||
1277 | static void | |
0b39b52e | 1278 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1279 | { |
1280 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1281 | } |
40c03ae8 EZ |
1282 | |
1283 | /* Like commands_command, but instead of reading the commands from | |
1284 | input stream, takes them from an already parsed command structure. | |
1285 | ||
1286 | This is used by cli-script.c to DTRT with breakpoint commands | |
1287 | that are part of if and while bodies. */ | |
1288 | enum command_control_type | |
896b6bda | 1289 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1290 | { |
95a42b64 TT |
1291 | commands_command_1 (arg, 0, cmd); |
1292 | return simple_control; | |
40c03ae8 | 1293 | } |
876fa593 JK |
1294 | |
1295 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1296 | ||
1297 | static int | |
1298 | bp_location_has_shadow (struct bp_location *bl) | |
1299 | { | |
1300 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1301 | return 0; | |
1302 | if (!bl->inserted) | |
1303 | return 0; | |
1304 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1305 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1306 | return 0; |
1307 | return 1; | |
1308 | } | |
1309 | ||
9d497a19 PA |
1310 | /* Update BUF, which is LEN bytes read from the target address |
1311 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1312 | contents. | |
1313 | ||
1314 | If READBUF is not NULL, this buffer must not overlap with the of | |
1315 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1316 | failed assertion internal error will be raised. */ | |
1317 | ||
1318 | static void | |
1319 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1320 | const gdb_byte *writebuf_org, | |
1321 | ULONGEST memaddr, LONGEST len, | |
1322 | struct bp_target_info *target_info, | |
1323 | struct gdbarch *gdbarch) | |
1324 | { | |
1325 | /* Now do full processing of the found relevant range of elements. */ | |
1326 | CORE_ADDR bp_addr = 0; | |
1327 | int bp_size = 0; | |
1328 | int bptoffset = 0; | |
1329 | ||
1330 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1331 | current_program_space->aspace, 0)) | |
1332 | { | |
1333 | /* The breakpoint is inserted in a different address space. */ | |
1334 | return; | |
1335 | } | |
1336 | ||
1337 | /* Addresses and length of the part of the breakpoint that | |
1338 | we need to copy. */ | |
1339 | bp_addr = target_info->placed_address; | |
1340 | bp_size = target_info->shadow_len; | |
1341 | ||
1342 | if (bp_addr + bp_size <= memaddr) | |
1343 | { | |
1344 | /* The breakpoint is entirely before the chunk of memory we are | |
1345 | reading. */ | |
1346 | return; | |
1347 | } | |
1348 | ||
1349 | if (bp_addr >= memaddr + len) | |
1350 | { | |
1351 | /* The breakpoint is entirely after the chunk of memory we are | |
1352 | reading. */ | |
1353 | return; | |
1354 | } | |
1355 | ||
1356 | /* Offset within shadow_contents. */ | |
1357 | if (bp_addr < memaddr) | |
1358 | { | |
1359 | /* Only copy the second part of the breakpoint. */ | |
1360 | bp_size -= memaddr - bp_addr; | |
1361 | bptoffset = memaddr - bp_addr; | |
1362 | bp_addr = memaddr; | |
1363 | } | |
1364 | ||
1365 | if (bp_addr + bp_size > memaddr + len) | |
1366 | { | |
1367 | /* Only copy the first part of the breakpoint. */ | |
1368 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1369 | } | |
1370 | ||
1371 | if (readbuf != NULL) | |
1372 | { | |
1373 | /* Verify that the readbuf buffer does not overlap with the | |
1374 | shadow_contents buffer. */ | |
1375 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1376 | || readbuf >= (target_info->shadow_contents | |
1377 | + target_info->shadow_len)); | |
1378 | ||
1379 | /* Update the read buffer with this inserted breakpoint's | |
1380 | shadow. */ | |
1381 | memcpy (readbuf + bp_addr - memaddr, | |
1382 | target_info->shadow_contents + bptoffset, bp_size); | |
1383 | } | |
1384 | else | |
1385 | { | |
1386 | const unsigned char *bp; | |
0d5ed153 MR |
1387 | CORE_ADDR addr = target_info->reqstd_address; |
1388 | int placed_size; | |
9d497a19 PA |
1389 | |
1390 | /* Update the shadow with what we want to write to memory. */ | |
1391 | memcpy (target_info->shadow_contents + bptoffset, | |
1392 | writebuf_org + bp_addr - memaddr, bp_size); | |
1393 | ||
1394 | /* Determine appropriate breakpoint contents and size for this | |
1395 | address. */ | |
0d5ed153 | 1396 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1397 | |
1398 | /* Update the final write buffer with this inserted | |
1399 | breakpoint's INSN. */ | |
1400 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1401 | } | |
1402 | } | |
1403 | ||
8defab1a | 1404 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1405 | by replacing any memory breakpoints with their shadowed contents. |
1406 | ||
35c63cd8 JB |
1407 | If READBUF is not NULL, this buffer must not overlap with any of |
1408 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1409 | a failed assertion internal error will be raised. | |
1410 | ||
876fa593 | 1411 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1412 | bl->address - bp_locations_placed_address_before_address_max |
1413 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1414 | The range we were requested to resolve shadows for is: |
1415 | memaddr ... memaddr + len | |
1416 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1417 | memaddr + len <= (bl->address |
f5336ca5 | 1418 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1419 | and: |
f5336ca5 | 1420 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1421 | |
8defab1a | 1422 | void |
f0ba3972 PA |
1423 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1424 | const gdb_byte *writebuf_org, | |
1425 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1426 | { |
4a64f543 MS |
1427 | /* Left boundary, right boundary and median element of our binary |
1428 | search. */ | |
876fa593 JK |
1429 | unsigned bc_l, bc_r, bc; |
1430 | ||
4a64f543 MS |
1431 | /* Find BC_L which is a leftmost element which may affect BUF |
1432 | content. It is safe to report lower value but a failure to | |
1433 | report higher one. */ | |
876fa593 JK |
1434 | |
1435 | bc_l = 0; | |
f5336ca5 | 1436 | bc_r = bp_locations_count; |
876fa593 JK |
1437 | while (bc_l + 1 < bc_r) |
1438 | { | |
35df4500 | 1439 | struct bp_location *bl; |
876fa593 JK |
1440 | |
1441 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1442 | bl = bp_locations[bc]; |
876fa593 | 1443 | |
4a64f543 MS |
1444 | /* Check first BL->ADDRESS will not overflow due to the added |
1445 | constant. Then advance the left boundary only if we are sure | |
1446 | the BC element can in no way affect the BUF content (MEMADDR | |
1447 | to MEMADDR + LEN range). | |
876fa593 | 1448 | |
f5336ca5 | 1449 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1450 | offset so that we cannot miss a breakpoint with its shadow |
1451 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1452 | |
f5336ca5 | 1453 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1454 | >= bl->address) |
f5336ca5 | 1455 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1456 | <= memaddr)) |
876fa593 JK |
1457 | bc_l = bc; |
1458 | else | |
1459 | bc_r = bc; | |
1460 | } | |
1461 | ||
128070bb PA |
1462 | /* Due to the binary search above, we need to make sure we pick the |
1463 | first location that's at BC_L's address. E.g., if there are | |
1464 | multiple locations at the same address, BC_L may end up pointing | |
1465 | at a duplicate location, and miss the "master"/"inserted" | |
1466 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1467 | B: | |
1468 | ||
1469 | L1@A, L2@A, L3@B, ... | |
1470 | ||
1471 | BC_L could end up pointing at location L2, while the "master" | |
1472 | location could be L1. Since the `loc->inserted' flag is only set | |
1473 | on "master" locations, we'd forget to restore the shadow of L1 | |
1474 | and L2. */ | |
1475 | while (bc_l > 0 | |
f5336ca5 | 1476 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1477 | bc_l--; |
1478 | ||
876fa593 JK |
1479 | /* Now do full processing of the found relevant range of elements. */ |
1480 | ||
f5336ca5 | 1481 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1482 | { |
f5336ca5 | 1483 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1484 | |
35df4500 TJB |
1485 | /* bp_location array has BL->OWNER always non-NULL. */ |
1486 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1487 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1488 | bl->owner->number); |
ffce0d52 | 1489 | |
e5dd4106 | 1490 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1491 | content. */ |
1492 | ||
f5336ca5 PA |
1493 | if (bl->address >= bp_locations_placed_address_before_address_max |
1494 | && memaddr + len <= (bl->address | |
1495 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1496 | break; |
1497 | ||
35df4500 | 1498 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1499 | continue; |
6c95b8df | 1500 | |
9d497a19 PA |
1501 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1502 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1503 | } | |
c906108c | 1504 | } |
9d497a19 | 1505 | |
c906108c | 1506 | \f |
c5aa993b | 1507 | |
b775012e LM |
1508 | /* Return true if BPT is either a software breakpoint or a hardware |
1509 | breakpoint. */ | |
1510 | ||
1511 | int | |
1512 | is_breakpoint (const struct breakpoint *bpt) | |
1513 | { | |
1514 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1515 | || bpt->type == bp_hardware_breakpoint |
1516 | || bpt->type == bp_dprintf); | |
b775012e LM |
1517 | } |
1518 | ||
60e1c644 PA |
1519 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1520 | ||
a5606eee | 1521 | static int |
d77f58be | 1522 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1523 | { |
1524 | return (bpt->type == bp_hardware_watchpoint | |
1525 | || bpt->type == bp_read_watchpoint | |
1526 | || bpt->type == bp_access_watchpoint); | |
1527 | } | |
7270d8f2 | 1528 | |
60e1c644 PA |
1529 | /* Return true if BPT is of any watchpoint kind, hardware or |
1530 | software. */ | |
1531 | ||
3a5c3e22 | 1532 | int |
d77f58be | 1533 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1534 | { |
1535 | return (is_hardware_watchpoint (bpt) | |
1536 | || bpt->type == bp_watchpoint); | |
1537 | } | |
1538 | ||
3a5c3e22 PA |
1539 | /* Returns true if the current thread and its running state are safe |
1540 | to evaluate or update watchpoint B. Watchpoints on local | |
1541 | expressions need to be evaluated in the context of the thread that | |
1542 | was current when the watchpoint was created, and, that thread needs | |
1543 | to be stopped to be able to select the correct frame context. | |
1544 | Watchpoints on global expressions can be evaluated on any thread, | |
1545 | and in any state. It is presently left to the target allowing | |
1546 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1547 | |
1548 | static int | |
3a5c3e22 | 1549 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1550 | { |
c1fc2657 | 1551 | return (b->pspace == current_program_space |
d7e15655 TT |
1552 | && (b->watchpoint_thread == null_ptid |
1553 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1554 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1555 | } |
1556 | ||
d0fb5eae JK |
1557 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1558 | associated bp_watchpoint_scope breakpoint. */ | |
1559 | ||
1560 | static void | |
3a5c3e22 | 1561 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1562 | { |
c1fc2657 | 1563 | if (w->related_breakpoint != w) |
d0fb5eae | 1564 | { |
c1fc2657 SM |
1565 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1566 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1567 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1568 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1569 | w->related_breakpoint = w; | |
d0fb5eae | 1570 | } |
c1fc2657 | 1571 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1572 | } |
1573 | ||
bb9d5f81 PP |
1574 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1575 | watchpoint W. */ | |
1576 | ||
1577 | static struct value * | |
1578 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1579 | { | |
1580 | struct value *bit_val; | |
1581 | ||
1582 | if (val == NULL) | |
1583 | return NULL; | |
1584 | ||
1585 | bit_val = allocate_value (value_type (val)); | |
1586 | ||
1587 | unpack_value_bitfield (bit_val, | |
1588 | w->val_bitpos, | |
1589 | w->val_bitsize, | |
1590 | value_contents_for_printing (val), | |
1591 | value_offset (val), | |
1592 | val); | |
1593 | ||
1594 | return bit_val; | |
1595 | } | |
1596 | ||
c6d81124 PA |
1597 | /* Allocate a dummy location and add it to B, which must be a software |
1598 | watchpoint. This is required because even if a software watchpoint | |
1599 | is not watching any memory, bpstat_stop_status requires a location | |
1600 | to be able to report stops. */ | |
1601 | ||
1602 | static void | |
1603 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1604 | struct program_space *pspace) | |
1605 | { | |
1606 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1607 | ||
1608 | b->loc = allocate_bp_location (b); | |
1609 | b->loc->pspace = pspace; | |
1610 | b->loc->address = -1; | |
1611 | b->loc->length = -1; | |
1612 | } | |
1613 | ||
1614 | /* Returns true if B is a software watchpoint that is not watching any | |
1615 | memory (e.g., "watch $pc"). */ | |
1616 | ||
1617 | static int | |
1618 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1619 | { | |
1620 | return (b->type == bp_watchpoint | |
1621 | && b->loc != NULL | |
1622 | && b->loc->next == NULL | |
1623 | && b->loc->address == -1 | |
1624 | && b->loc->length == -1); | |
1625 | } | |
1626 | ||
567e1b4e JB |
1627 | /* Assuming that B is a watchpoint: |
1628 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1629 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1630 | - Evaluate the condition if there is one, and store the result |
1631 | in b->loc->cond. | |
a5606eee VP |
1632 | - Update the list of values that must be watched in B->loc. |
1633 | ||
4a64f543 MS |
1634 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1635 | nothing. If this is local watchpoint that is out of scope, delete | |
1636 | it. | |
1637 | ||
1638 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1639 | removed + inserted on each stop here. Normal breakpoints must | |
1640 | never be removed because they might be missed by a running thread | |
1641 | when debugging in non-stop mode. On the other hand, hardware | |
1642 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1643 | to each LWP since they are stored in each LWP's hardware debug | |
1644 | registers. Therefore, such LWP must be stopped first in order to | |
1645 | be able to modify its hardware watchpoints. | |
1646 | ||
1647 | Hardware watchpoints must be reset exactly once after being | |
1648 | presented to the user. It cannot be done sooner, because it would | |
1649 | reset the data used to present the watchpoint hit to the user. And | |
1650 | it must not be done later because it could display the same single | |
1651 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1652 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1653 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1654 | not user-visible - its hit is suppressed if the memory content has | |
1655 | not changed. | |
1656 | ||
1657 | The following constraints influence the location where we can reset | |
1658 | hardware watchpoints: | |
1659 | ||
1660 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1661 | called several times when GDB stops. | |
1662 | ||
1663 | [linux] | |
1664 | * Multiple hardware watchpoints can be hit at the same time, | |
1665 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1666 | hit at a time as the reason for stopping, and all the other hits | |
1667 | are presented later, one after the other, each time the user | |
1668 | requests the execution to be resumed. Execution is not resumed | |
1669 | for the threads still having pending hit event stored in | |
1670 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1671 | the inferior on the first stop the thread hit event is kept being | |
1672 | reported from its cached value by linux_nat_stopped_data_address | |
1673 | until the real thread resume happens after the watchpoint gets | |
1674 | presented and thus its LWP_INFO->STATUS gets reset. | |
1675 | ||
1676 | Therefore the hardware watchpoint hit can get safely reset on the | |
1677 | watchpoint removal from inferior. */ | |
a79d3c27 | 1678 | |
b40ce68a | 1679 | static void |
3a5c3e22 | 1680 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1681 | { |
a5606eee | 1682 | int within_current_scope; |
a5606eee | 1683 | struct frame_id saved_frame_id; |
66076460 | 1684 | int frame_saved; |
a5606eee | 1685 | |
f6bc2008 PA |
1686 | /* If this is a local watchpoint, we only want to check if the |
1687 | watchpoint frame is in scope if the current thread is the thread | |
1688 | that was used to create the watchpoint. */ | |
1689 | if (!watchpoint_in_thread_scope (b)) | |
1690 | return; | |
1691 | ||
c1fc2657 | 1692 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1693 | return; |
1694 | ||
66076460 | 1695 | frame_saved = 0; |
a5606eee VP |
1696 | |
1697 | /* Determine if the watchpoint is within scope. */ | |
1698 | if (b->exp_valid_block == NULL) | |
1699 | within_current_scope = 1; | |
1700 | else | |
1701 | { | |
b5db5dfc UW |
1702 | struct frame_info *fi = get_current_frame (); |
1703 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1704 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1705 | ||
c9cf6e20 MG |
1706 | /* If we're at a point where the stack has been destroyed |
1707 | (e.g. in a function epilogue), unwinding may not work | |
1708 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1709 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1710 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1711 | return; |
66076460 DJ |
1712 | |
1713 | /* Save the current frame's ID so we can restore it after | |
1714 | evaluating the watchpoint expression on its own frame. */ | |
1715 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1716 | took a frame parameter, so that we didn't have to change the | |
1717 | selected frame. */ | |
1718 | frame_saved = 1; | |
1719 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1720 | ||
a5606eee VP |
1721 | fi = frame_find_by_id (b->watchpoint_frame); |
1722 | within_current_scope = (fi != NULL); | |
1723 | if (within_current_scope) | |
1724 | select_frame (fi); | |
1725 | } | |
1726 | ||
b5db5dfc UW |
1727 | /* We don't free locations. They are stored in the bp_location array |
1728 | and update_global_location_list will eventually delete them and | |
1729 | remove breakpoints if needed. */ | |
c1fc2657 | 1730 | b->loc = NULL; |
b5db5dfc | 1731 | |
a5606eee VP |
1732 | if (within_current_scope && reparse) |
1733 | { | |
bbc13ae3 | 1734 | const char *s; |
d63d0675 | 1735 | |
4d01a485 | 1736 | b->exp.reset (); |
d63d0675 | 1737 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1738 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1739 | /* If the meaning of expression itself changed, the old value is |
1740 | no longer relevant. We don't want to report a watchpoint hit | |
1741 | to the user when the old value and the new value may actually | |
1742 | be completely different objects. */ | |
fa4727a6 DJ |
1743 | b->val = NULL; |
1744 | b->val_valid = 0; | |
60e1c644 PA |
1745 | |
1746 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1747 | expression is stored in the breakpoint object, not in the | |
1748 | locations (re)created below. */ | |
c1fc2657 | 1749 | if (b->cond_string != NULL) |
60e1c644 | 1750 | { |
4d01a485 | 1751 | b->cond_exp.reset (); |
60e1c644 | 1752 | |
c1fc2657 | 1753 | s = b->cond_string; |
1bb9788d | 1754 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1755 | } |
a5606eee | 1756 | } |
a5606eee VP |
1757 | |
1758 | /* If we failed to parse the expression, for example because | |
1759 | it refers to a global variable in a not-yet-loaded shared library, | |
1760 | don't try to insert watchpoint. We don't automatically delete | |
1761 | such watchpoint, though, since failure to parse expression | |
1762 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1763 | if (!target_has_execution) |
2d134ed3 PA |
1764 | { |
1765 | /* Without execution, memory can't change. No use to try and | |
1766 | set watchpoint locations. The watchpoint will be reset when | |
1767 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1768 | if (!can_use_hw_watchpoints) |
1769 | { | |
c1fc2657 SM |
1770 | if (b->ops->works_in_software_mode (b)) |
1771 | b->type = bp_watchpoint; | |
e8369a73 | 1772 | else |
638aa5a1 AB |
1773 | error (_("Can't set read/access watchpoint when " |
1774 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1775 | } |
2d134ed3 PA |
1776 | } |
1777 | else if (within_current_scope && b->exp) | |
a5606eee | 1778 | { |
0cf6dd15 | 1779 | int pc = 0; |
a6535de1 | 1780 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1781 | struct value *v, *result; |
2d134ed3 | 1782 | struct program_space *frame_pspace; |
a5606eee | 1783 | |
4d01a485 | 1784 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1785 | |
a5606eee VP |
1786 | /* Avoid setting b->val if it's already set. The meaning of |
1787 | b->val is 'the last value' user saw, and we should update | |
1788 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1789 | happens, the code that reports it updates b->val directly. |
1790 | We don't keep track of the memory value for masked | |
1791 | watchpoints. */ | |
c1fc2657 | 1792 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1793 | { |
bb9d5f81 | 1794 | if (b->val_bitsize != 0) |
850645cf TT |
1795 | v = extract_bitfield_from_watchpoint_value (b, v); |
1796 | b->val = release_value (v); | |
fa4727a6 DJ |
1797 | b->val_valid = 1; |
1798 | } | |
a5606eee | 1799 | |
2d134ed3 PA |
1800 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1801 | ||
a5606eee | 1802 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1803 | gdb_assert (!val_chain.empty ()); |
1804 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1805 | { |
a6535de1 TT |
1806 | v = iter.get (); |
1807 | ||
a5606eee VP |
1808 | /* If it's a memory location, and GDB actually needed |
1809 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1810 | must watch it. If the first value returned is |
1811 | still lazy, that means an error occurred reading it; | |
1812 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1813 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1814 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1815 | { |
1816 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1817 | |
a5606eee VP |
1818 | /* We only watch structs and arrays if user asked |
1819 | for it explicitly, never if they just happen to | |
1820 | appear in the middle of some value chain. */ | |
fa4727a6 | 1821 | if (v == result |
a5606eee VP |
1822 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1823 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1824 | { | |
1825 | CORE_ADDR addr; | |
f486487f | 1826 | enum target_hw_bp_type type; |
a5606eee | 1827 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1828 | int bitpos = 0, bitsize = 0; |
1829 | ||
1830 | if (value_bitsize (v) != 0) | |
1831 | { | |
1832 | /* Extract the bit parameters out from the bitfield | |
1833 | sub-expression. */ | |
1834 | bitpos = value_bitpos (v); | |
1835 | bitsize = value_bitsize (v); | |
1836 | } | |
1837 | else if (v == result && b->val_bitsize != 0) | |
1838 | { | |
1839 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1840 | lvalue whose bit parameters are saved in the fields | |
1841 | VAL_BITPOS and VAL_BITSIZE. */ | |
1842 | bitpos = b->val_bitpos; | |
1843 | bitsize = b->val_bitsize; | |
1844 | } | |
a5606eee | 1845 | |
42ae5230 | 1846 | addr = value_address (v); |
bb9d5f81 PP |
1847 | if (bitsize != 0) |
1848 | { | |
1849 | /* Skip the bytes that don't contain the bitfield. */ | |
1850 | addr += bitpos / 8; | |
1851 | } | |
1852 | ||
a5606eee | 1853 | type = hw_write; |
c1fc2657 | 1854 | if (b->type == bp_read_watchpoint) |
a5606eee | 1855 | type = hw_read; |
c1fc2657 | 1856 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1857 | type = hw_access; |
3a5c3e22 | 1858 | |
c1fc2657 SM |
1859 | loc = allocate_bp_location (b); |
1860 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1861 | ; |
1862 | *tmp = loc; | |
a6d9a66e | 1863 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1864 | |
1865 | loc->pspace = frame_pspace; | |
f17d9474 | 1866 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1867 | |
1868 | if (bitsize != 0) | |
1869 | { | |
1870 | /* Just cover the bytes that make up the bitfield. */ | |
1871 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1872 | } | |
1873 | else | |
1874 | loc->length = TYPE_LENGTH (value_type (v)); | |
1875 | ||
a5606eee VP |
1876 | loc->watchpoint_type = type; |
1877 | } | |
1878 | } | |
9fa40276 TJB |
1879 | } |
1880 | ||
1881 | /* Change the type of breakpoint between hardware assisted or | |
1882 | an ordinary watchpoint depending on the hardware support | |
1883 | and free hardware slots. REPARSE is set when the inferior | |
1884 | is started. */ | |
a9634178 | 1885 | if (reparse) |
9fa40276 | 1886 | { |
e09342b5 | 1887 | int reg_cnt; |
9fa40276 TJB |
1888 | enum bp_loc_type loc_type; |
1889 | struct bp_location *bl; | |
a5606eee | 1890 | |
a9634178 | 1891 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1892 | |
1893 | if (reg_cnt) | |
9fa40276 TJB |
1894 | { |
1895 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1896 | enum bptype type; |
9fa40276 | 1897 | |
a9634178 TJB |
1898 | /* Use an exact watchpoint when there's only one memory region to be |
1899 | watched, and only one debug register is needed to watch it. */ | |
1900 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1901 | ||
9fa40276 | 1902 | /* We need to determine how many resources are already |
e09342b5 TJB |
1903 | used for all other hardware watchpoints plus this one |
1904 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1905 | this watchpoint in as well. */ |
1906 | ||
1907 | /* If this is a software watchpoint, we try to turn it | |
1908 | to a hardware one -- count resources as if B was of | |
1909 | hardware watchpoint type. */ | |
c1fc2657 | 1910 | type = b->type; |
a1398e0c PA |
1911 | if (type == bp_watchpoint) |
1912 | type = bp_hardware_watchpoint; | |
1913 | ||
1914 | /* This watchpoint may or may not have been placed on | |
1915 | the list yet at this point (it won't be in the list | |
1916 | if we're trying to create it for the first time, | |
1917 | through watch_command), so always account for it | |
1918 | manually. */ | |
1919 | ||
1920 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1921 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1922 | |
1923 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1924 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1925 | |
1926 | target_resources_ok | |
1927 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1928 | if (target_resources_ok <= 0) |
a9634178 | 1929 | { |
c1fc2657 | 1930 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1931 | |
1932 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1933 | error (_("Target does not support this type of " |
1934 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1935 | else if (target_resources_ok < 0 && !sw_mode) |
1936 | error (_("There are not enough available hardware " | |
1937 | "resources for this watchpoint.")); | |
a1398e0c PA |
1938 | |
1939 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1940 | b->type = bp_watchpoint; |
a1398e0c PA |
1941 | } |
1942 | else | |
1943 | { | |
1944 | /* If this was a software watchpoint, we've just | |
1945 | found we have enough resources to turn it to a | |
1946 | hardware watchpoint. Otherwise, this is a | |
1947 | nop. */ | |
c1fc2657 | 1948 | b->type = type; |
a9634178 | 1949 | } |
9fa40276 | 1950 | } |
c1fc2657 | 1951 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1952 | { |
1953 | if (!can_use_hw_watchpoints) | |
1954 | error (_("Can't set read/access watchpoint when " | |
1955 | "hardware watchpoints are disabled.")); | |
1956 | else | |
1957 | error (_("Expression cannot be implemented with " | |
1958 | "read/access watchpoint.")); | |
1959 | } | |
9fa40276 | 1960 | else |
c1fc2657 | 1961 | b->type = bp_watchpoint; |
9fa40276 | 1962 | |
c1fc2657 | 1963 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1964 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1965 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1966 | bl->loc_type = loc_type; |
1967 | } | |
1968 | ||
c7437ca6 PA |
1969 | /* If a software watchpoint is not watching any memory, then the |
1970 | above left it without any location set up. But, | |
1971 | bpstat_stop_status requires a location to be able to report | |
1972 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1973 | if (b->type == bp_watchpoint && b->loc == NULL) |
1974 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1975 | } |
1976 | else if (!within_current_scope) | |
7270d8f2 | 1977 | { |
ac74f770 MS |
1978 | printf_filtered (_("\ |
1979 | Watchpoint %d deleted because the program has left the block\n\ | |
1980 | in which its expression is valid.\n"), | |
c1fc2657 | 1981 | b->number); |
d0fb5eae | 1982 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1983 | } |
a5606eee VP |
1984 | |
1985 | /* Restore the selected frame. */ | |
66076460 DJ |
1986 | if (frame_saved) |
1987 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1988 | } |
1989 | ||
a5606eee | 1990 | |
74960c60 | 1991 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1992 | inserted in the inferior. We don't differentiate the type of BL's owner |
1993 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1994 | breakpoint_ops is not defined, because in insert_bp_location, | |
1995 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1996 | static int |
35df4500 | 1997 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1998 | { |
35df4500 | 1999 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2000 | return 0; |
2001 | ||
35df4500 | 2002 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2003 | return 0; |
2004 | ||
35df4500 | 2005 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2006 | return 0; |
2007 | ||
f8eba3c6 TT |
2008 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2009 | return 0; | |
2010 | ||
56710373 PA |
2011 | /* This is set for example, when we're attached to the parent of a |
2012 | vfork, and have detached from the child. The child is running | |
2013 | free, and we expect it to do an exec or exit, at which point the | |
2014 | OS makes the parent schedulable again (and the target reports | |
2015 | that the vfork is done). Until the child is done with the shared | |
2016 | memory region, do not insert breakpoints in the parent, otherwise | |
2017 | the child could still trip on the parent's breakpoints. Since | |
2018 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2019 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2020 | return 0; |
2021 | ||
31e77af2 | 2022 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2023 | location, except if the breakpoint is a single-step breakpoint, |
2024 | and the breakpoint's thread is the thread which is stepping past | |
2025 | a breakpoint. */ | |
31e77af2 PA |
2026 | if ((bl->loc_type == bp_loc_software_breakpoint |
2027 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2028 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2029 | bl->address) |
2030 | /* The single-step breakpoint may be inserted at the location | |
2031 | we're trying to step if the instruction branches to itself. | |
2032 | However, the instruction won't be executed at all and it may | |
2033 | break the semantics of the instruction, for example, the | |
2034 | instruction is a conditional branch or updates some flags. | |
2035 | We can't fix it unless GDB is able to emulate the instruction | |
2036 | or switch to displaced stepping. */ | |
2037 | && !(bl->owner->type == bp_single_step | |
2038 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2039 | { |
2040 | if (debug_infrun) | |
2041 | { | |
2042 | fprintf_unfiltered (gdb_stdlog, | |
2043 | "infrun: skipping breakpoint: " | |
2044 | "stepping past insn at: %s\n", | |
2045 | paddress (bl->gdbarch, bl->address)); | |
2046 | } | |
2047 | return 0; | |
2048 | } | |
31e77af2 | 2049 | |
963f9c80 PA |
2050 | /* Don't insert watchpoints if we're trying to step past the |
2051 | instruction that triggered one. */ | |
2052 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2053 | && stepping_past_nonsteppable_watchpoint ()) | |
2054 | { | |
2055 | if (debug_infrun) | |
2056 | { | |
2057 | fprintf_unfiltered (gdb_stdlog, | |
2058 | "infrun: stepping past non-steppable watchpoint. " | |
2059 | "skipping watchpoint at %s:%d\n", | |
2060 | paddress (bl->gdbarch, bl->address), | |
2061 | bl->length); | |
2062 | } | |
2063 | return 0; | |
2064 | } | |
2065 | ||
74960c60 VP |
2066 | return 1; |
2067 | } | |
2068 | ||
934709f0 PW |
2069 | /* Same as should_be_inserted but does the check assuming |
2070 | that the location is not duplicated. */ | |
2071 | ||
2072 | static int | |
2073 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2074 | { | |
2075 | int result; | |
2076 | const int save_duplicate = bl->duplicate; | |
2077 | ||
2078 | bl->duplicate = 0; | |
2079 | result = should_be_inserted (bl); | |
2080 | bl->duplicate = save_duplicate; | |
2081 | return result; | |
2082 | } | |
2083 | ||
b775012e LM |
2084 | /* Parses a conditional described by an expression COND into an |
2085 | agent expression bytecode suitable for evaluation | |
2086 | by the bytecode interpreter. Return NULL if there was | |
2087 | any error during parsing. */ | |
2088 | ||
833177a4 | 2089 | static agent_expr_up |
b775012e LM |
2090 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2091 | { | |
833177a4 | 2092 | if (cond == NULL) |
b775012e LM |
2093 | return NULL; |
2094 | ||
833177a4 PA |
2095 | agent_expr_up aexpr; |
2096 | ||
b775012e LM |
2097 | /* We don't want to stop processing, so catch any errors |
2098 | that may show up. */ | |
492d29ea | 2099 | TRY |
b775012e | 2100 | { |
036e657b | 2101 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2102 | } |
2103 | ||
492d29ea | 2104 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2105 | { |
2106 | /* If we got here, it means the condition could not be parsed to a valid | |
2107 | bytecode expression and thus can't be evaluated on the target's side. | |
2108 | It's no use iterating through the conditions. */ | |
b775012e | 2109 | } |
492d29ea | 2110 | END_CATCH |
b775012e LM |
2111 | |
2112 | /* We have a valid agent expression. */ | |
2113 | return aexpr; | |
2114 | } | |
2115 | ||
2116 | /* Based on location BL, create a list of breakpoint conditions to be | |
2117 | passed on to the target. If we have duplicated locations with different | |
2118 | conditions, we will add such conditions to the list. The idea is that the | |
2119 | target will evaluate the list of conditions and will only notify GDB when | |
2120 | one of them is true. */ | |
2121 | ||
2122 | static void | |
2123 | build_target_condition_list (struct bp_location *bl) | |
2124 | { | |
2125 | struct bp_location **locp = NULL, **loc2p; | |
2126 | int null_condition_or_parse_error = 0; | |
2127 | int modified = bl->needs_update; | |
2128 | struct bp_location *loc; | |
2129 | ||
8b4f3082 | 2130 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2131 | bl->target_info.conditions.clear (); |
8b4f3082 | 2132 | |
b775012e LM |
2133 | /* This is only meaningful if the target is |
2134 | evaluating conditions and if the user has | |
2135 | opted for condition evaluation on the target's | |
2136 | side. */ | |
2137 | if (gdb_evaluates_breakpoint_condition_p () | |
2138 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2139 | return; | |
2140 | ||
2141 | /* Do a first pass to check for locations with no assigned | |
2142 | conditions or conditions that fail to parse to a valid agent expression | |
2143 | bytecode. If any of these happen, then it's no use to send conditions | |
2144 | to the target since this location will always trigger and generate a | |
2145 | response back to GDB. */ | |
2146 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2147 | { | |
2148 | loc = (*loc2p); | |
2149 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2150 | { | |
2151 | if (modified) | |
2152 | { | |
b775012e LM |
2153 | /* Re-parse the conditions since something changed. In that |
2154 | case we already freed the condition bytecodes (see | |
2155 | force_breakpoint_reinsertion). We just | |
2156 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2157 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2158 | loc->cond.get ()); | |
b775012e LM |
2159 | } |
2160 | ||
2161 | /* If we have a NULL bytecode expression, it means something | |
2162 | went wrong or we have a null condition expression. */ | |
2163 | if (!loc->cond_bytecode) | |
2164 | { | |
2165 | null_condition_or_parse_error = 1; | |
2166 | break; | |
2167 | } | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | /* If any of these happened, it means we will have to evaluate the conditions | |
2172 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2173 | for all the other duplicate locations, thus we free all of them here. | |
2174 | ||
2175 | This is so we have a finer control over which locations' conditions are | |
2176 | being evaluated by GDB or the remote stub. */ | |
2177 | if (null_condition_or_parse_error) | |
2178 | { | |
2179 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2180 | { | |
2181 | loc = (*loc2p); | |
2182 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2183 | { | |
2184 | /* Only go as far as the first NULL bytecode is | |
2185 | located. */ | |
2186 | if (!loc->cond_bytecode) | |
2187 | return; | |
2188 | ||
833177a4 | 2189 | loc->cond_bytecode.reset (); |
b775012e LM |
2190 | } |
2191 | } | |
2192 | } | |
2193 | ||
2194 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2195 | for this location's address. */ | |
2196 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2197 | { | |
2198 | loc = (*loc2p); | |
2199 | if (loc->cond | |
2200 | && is_breakpoint (loc->owner) | |
2201 | && loc->pspace->num == bl->pspace->num | |
2202 | && loc->owner->enable_state == bp_enabled | |
2203 | && loc->enabled) | |
3cde5c42 PA |
2204 | { |
2205 | /* Add the condition to the vector. This will be used later | |
2206 | to send the conditions to the target. */ | |
2207 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2208 | } | |
b775012e LM |
2209 | } |
2210 | ||
2211 | return; | |
2212 | } | |
2213 | ||
d3ce09f5 SS |
2214 | /* Parses a command described by string CMD into an agent expression |
2215 | bytecode suitable for evaluation by the bytecode interpreter. | |
2216 | Return NULL if there was any error during parsing. */ | |
2217 | ||
833177a4 | 2218 | static agent_expr_up |
d3ce09f5 SS |
2219 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2220 | { | |
bbc13ae3 KS |
2221 | const char *cmdrest; |
2222 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2223 | struct gdbarch *gdbarch = get_current_arch (); |
2224 | ||
833177a4 | 2225 | if (cmd == NULL) |
d3ce09f5 SS |
2226 | return NULL; |
2227 | ||
2228 | cmdrest = cmd; | |
2229 | ||
2230 | if (*cmdrest == ',') | |
2231 | ++cmdrest; | |
f1735a53 | 2232 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2233 | |
2234 | if (*cmdrest++ != '"') | |
2235 | error (_("No format string following the location")); | |
2236 | ||
2237 | format_start = cmdrest; | |
2238 | ||
8e481c3b | 2239 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2240 | |
2241 | format_end = cmdrest; | |
2242 | ||
2243 | if (*cmdrest++ != '"') | |
2244 | error (_("Bad format string, non-terminated '\"'.")); | |
2245 | ||
f1735a53 | 2246 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2247 | |
2248 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2249 | error (_("Invalid argument syntax")); | |
2250 | ||
2251 | if (*cmdrest == ',') | |
2252 | cmdrest++; | |
f1735a53 | 2253 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2254 | |
2255 | /* For each argument, make an expression. */ | |
2256 | ||
8e481c3b | 2257 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2258 | while (*cmdrest != '\0') |
2259 | { | |
bbc13ae3 | 2260 | const char *cmd1; |
d3ce09f5 SS |
2261 | |
2262 | cmd1 = cmdrest; | |
4d01a485 | 2263 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2264 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2265 | cmdrest = cmd1; |
2266 | if (*cmdrest == ',') | |
2267 | ++cmdrest; | |
2268 | } | |
2269 | ||
833177a4 PA |
2270 | agent_expr_up aexpr; |
2271 | ||
d3ce09f5 SS |
2272 | /* We don't want to stop processing, so catch any errors |
2273 | that may show up. */ | |
492d29ea | 2274 | TRY |
d3ce09f5 | 2275 | { |
036e657b JB |
2276 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2277 | format_start, format_end - format_start, | |
8e481c3b | 2278 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2279 | } |
492d29ea | 2280 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2281 | { |
2282 | /* If we got here, it means the command could not be parsed to a valid | |
2283 | bytecode expression and thus can't be evaluated on the target's side. | |
2284 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2285 | } |
492d29ea PA |
2286 | END_CATCH |
2287 | ||
d3ce09f5 SS |
2288 | /* We have a valid agent expression, return it. */ |
2289 | return aexpr; | |
2290 | } | |
2291 | ||
2292 | /* Based on location BL, create a list of breakpoint commands to be | |
2293 | passed on to the target. If we have duplicated locations with | |
2294 | different commands, we will add any such to the list. */ | |
2295 | ||
2296 | static void | |
2297 | build_target_command_list (struct bp_location *bl) | |
2298 | { | |
2299 | struct bp_location **locp = NULL, **loc2p; | |
2300 | int null_command_or_parse_error = 0; | |
2301 | int modified = bl->needs_update; | |
2302 | struct bp_location *loc; | |
2303 | ||
3cde5c42 PA |
2304 | /* Clear commands left over from a previous insert. */ |
2305 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2306 | |
41fac0cf | 2307 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2308 | return; |
2309 | ||
41fac0cf PA |
2310 | /* For now, limit to agent-style dprintf breakpoints. */ |
2311 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2312 | return; |
2313 | ||
41fac0cf PA |
2314 | /* For now, if we have any duplicate location that isn't a dprintf, |
2315 | don't install the target-side commands, as that would make the | |
2316 | breakpoint not be reported to the core, and we'd lose | |
2317 | control. */ | |
2318 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2319 | { | |
2320 | loc = (*loc2p); | |
2321 | if (is_breakpoint (loc->owner) | |
2322 | && loc->pspace->num == bl->pspace->num | |
2323 | && loc->owner->type != bp_dprintf) | |
2324 | return; | |
2325 | } | |
2326 | ||
d3ce09f5 SS |
2327 | /* Do a first pass to check for locations with no assigned |
2328 | conditions or conditions that fail to parse to a valid agent expression | |
2329 | bytecode. If any of these happen, then it's no use to send conditions | |
2330 | to the target since this location will always trigger and generate a | |
2331 | response back to GDB. */ | |
2332 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2333 | { | |
2334 | loc = (*loc2p); | |
2335 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2336 | { | |
2337 | if (modified) | |
2338 | { | |
d3ce09f5 SS |
2339 | /* Re-parse the commands since something changed. In that |
2340 | case we already freed the command bytecodes (see | |
2341 | force_breakpoint_reinsertion). We just | |
2342 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2343 | loc->cmd_bytecode |
2344 | = parse_cmd_to_aexpr (bl->address, | |
2345 | loc->owner->extra_string); | |
d3ce09f5 SS |
2346 | } |
2347 | ||
2348 | /* If we have a NULL bytecode expression, it means something | |
2349 | went wrong or we have a null command expression. */ | |
2350 | if (!loc->cmd_bytecode) | |
2351 | { | |
2352 | null_command_or_parse_error = 1; | |
2353 | break; | |
2354 | } | |
2355 | } | |
2356 | } | |
2357 | ||
2358 | /* If anything failed, then we're not doing target-side commands, | |
2359 | and so clean up. */ | |
2360 | if (null_command_or_parse_error) | |
2361 | { | |
2362 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2363 | { | |
2364 | loc = (*loc2p); | |
2365 | if (is_breakpoint (loc->owner) | |
2366 | && loc->pspace->num == bl->pspace->num) | |
2367 | { | |
2368 | /* Only go as far as the first NULL bytecode is | |
2369 | located. */ | |
40fb6c5e | 2370 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2371 | return; |
2372 | ||
833177a4 | 2373 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2374 | } |
2375 | } | |
2376 | } | |
2377 | ||
2378 | /* No NULL commands or failed bytecode generation. Build a command list | |
2379 | for this location's address. */ | |
2380 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2381 | { | |
2382 | loc = (*loc2p); | |
2383 | if (loc->owner->extra_string | |
2384 | && is_breakpoint (loc->owner) | |
2385 | && loc->pspace->num == bl->pspace->num | |
2386 | && loc->owner->enable_state == bp_enabled | |
2387 | && loc->enabled) | |
3cde5c42 PA |
2388 | { |
2389 | /* Add the command to the vector. This will be used later | |
2390 | to send the commands to the target. */ | |
2391 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2392 | } | |
d3ce09f5 SS |
2393 | } |
2394 | ||
2395 | bl->target_info.persist = 0; | |
2396 | /* Maybe flag this location as persistent. */ | |
2397 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2398 | bl->target_info.persist = 1; | |
2399 | } | |
2400 | ||
833b7ab5 YQ |
2401 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2402 | of breakpoint according to ADDR except single-step breakpoint. | |
2403 | Get the kind of single-step breakpoint according to the current | |
2404 | registers state. */ | |
cd6c3b4f YQ |
2405 | |
2406 | static int | |
2407 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2408 | { | |
833b7ab5 YQ |
2409 | if (bl->owner->type == bp_single_step) |
2410 | { | |
2411 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2412 | struct regcache *regcache; | |
2413 | ||
00431a78 | 2414 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2415 | |
2416 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2417 | regcache, addr); | |
2418 | } | |
2419 | else | |
2420 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2421 | } |
2422 | ||
35df4500 TJB |
2423 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2424 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2425 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2426 | Returns 0 for success, 1 if the bp_location type is not supported or |
2427 | -1 for failure. | |
879bfdc2 | 2428 | |
4a64f543 MS |
2429 | NOTE drow/2003-09-09: This routine could be broken down to an |
2430 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2431 | static int |
35df4500 | 2432 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2433 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2434 | int *disabled_breaks, |
dd61ec5c MW |
2435 | int *hw_breakpoint_error, |
2436 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2437 | { |
688fca4f | 2438 | gdb_exception bp_excpt = exception_none; |
879bfdc2 | 2439 | |
b775012e | 2440 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2441 | return 0; |
2442 | ||
35c63cd8 JB |
2443 | /* Note we don't initialize bl->target_info, as that wipes out |
2444 | the breakpoint location's shadow_contents if the breakpoint | |
2445 | is still inserted at that location. This in turn breaks | |
2446 | target_read_memory which depends on these buffers when | |
2447 | a memory read is requested at the breakpoint location: | |
2448 | Once the target_info has been wiped, we fail to see that | |
2449 | we have a breakpoint inserted at that address and thus | |
2450 | read the breakpoint instead of returning the data saved in | |
2451 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2452 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2453 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2454 | bl->target_info.length = bl->length; |
8181d85f | 2455 | |
b775012e LM |
2456 | /* When working with target-side conditions, we must pass all the conditions |
2457 | for the same breakpoint address down to the target since GDB will not | |
2458 | insert those locations. With a list of breakpoint conditions, the target | |
2459 | can decide when to stop and notify GDB. */ | |
2460 | ||
2461 | if (is_breakpoint (bl->owner)) | |
2462 | { | |
2463 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2464 | build_target_command_list (bl); |
2465 | /* Reset the modification marker. */ | |
b775012e LM |
2466 | bl->needs_update = 0; |
2467 | } | |
2468 | ||
35df4500 TJB |
2469 | if (bl->loc_type == bp_loc_software_breakpoint |
2470 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2471 | { |
35df4500 | 2472 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2473 | { |
2474 | /* If the explicitly specified breakpoint type | |
2475 | is not hardware breakpoint, check the memory map to see | |
2476 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2477 | |
765dc015 VP |
2478 | Two important cases are: |
2479 | - location type is not hardware breakpoint, memory | |
2480 | is readonly. We change the type of the location to | |
2481 | hardware breakpoint. | |
4a64f543 MS |
2482 | - location type is hardware breakpoint, memory is |
2483 | read-write. This means we've previously made the | |
2484 | location hardware one, but then the memory map changed, | |
2485 | so we undo. | |
765dc015 | 2486 | |
4a64f543 MS |
2487 | When breakpoints are removed, remove_breakpoints will use |
2488 | location types we've just set here, the only possible | |
2489 | problem is that memory map has changed during running | |
2490 | program, but it's not going to work anyway with current | |
2491 | gdb. */ | |
765dc015 | 2492 | struct mem_region *mr |
0d5ed153 | 2493 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2494 | |
2495 | if (mr) | |
2496 | { | |
2497 | if (automatic_hardware_breakpoints) | |
2498 | { | |
765dc015 VP |
2499 | enum bp_loc_type new_type; |
2500 | ||
2501 | if (mr->attrib.mode != MEM_RW) | |
2502 | new_type = bp_loc_hardware_breakpoint; | |
2503 | else | |
2504 | new_type = bp_loc_software_breakpoint; | |
2505 | ||
35df4500 | 2506 | if (new_type != bl->loc_type) |
765dc015 VP |
2507 | { |
2508 | static int said = 0; | |
cc59ec59 | 2509 | |
35df4500 | 2510 | bl->loc_type = new_type; |
765dc015 VP |
2511 | if (!said) |
2512 | { | |
3e43a32a MS |
2513 | fprintf_filtered (gdb_stdout, |
2514 | _("Note: automatically using " | |
2515 | "hardware breakpoints for " | |
2516 | "read-only addresses.\n")); | |
765dc015 VP |
2517 | said = 1; |
2518 | } | |
2519 | } | |
2520 | } | |
35df4500 | 2521 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2522 | && mr->attrib.mode != MEM_RW) |
2523 | { | |
2524 | fprintf_unfiltered (tmp_error_stream, | |
2525 | _("Cannot insert breakpoint %d.\n" | |
2526 | "Cannot set software breakpoint " | |
2527 | "at read-only address %s\n"), | |
2528 | bl->owner->number, | |
2529 | paddress (bl->gdbarch, bl->address)); | |
2530 | return 1; | |
2531 | } | |
765dc015 VP |
2532 | } |
2533 | } | |
2534 | ||
879bfdc2 DJ |
2535 | /* First check to see if we have to handle an overlay. */ |
2536 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2537 | || bl->section == NULL |
2538 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2539 | { |
2540 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2541 | TRY |
dd61ec5c | 2542 | { |
0000e5cc PA |
2543 | int val; |
2544 | ||
dd61ec5c | 2545 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2546 | if (val) |
688fca4f | 2547 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2548 | } |
492d29ea | 2549 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2550 | { |
688fca4f | 2551 | bp_excpt = e; |
dd61ec5c | 2552 | } |
492d29ea | 2553 | END_CATCH |
879bfdc2 DJ |
2554 | } |
2555 | else | |
2556 | { | |
4a64f543 | 2557 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2558 | Shall we set a breakpoint at the LMA? */ |
2559 | if (!overlay_events_enabled) | |
2560 | { | |
2561 | /* Yes -- overlay event support is not active, | |
2562 | so we must try to set a breakpoint at the LMA. | |
2563 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2564 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2565 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2566 | bl->owner->number); |
879bfdc2 DJ |
2567 | else |
2568 | { | |
35df4500 TJB |
2569 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2570 | bl->section); | |
879bfdc2 | 2571 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2572 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2573 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2574 | |
2575 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2576 | TRY |
0000e5cc PA |
2577 | { |
2578 | int val; | |
2579 | ||
579c6ad9 | 2580 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2581 | = breakpoint_kind (bl, &addr); |
2582 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2583 | val = target_insert_breakpoint (bl->gdbarch, |
2584 | &bl->overlay_target_info); | |
2585 | if (val) | |
688fca4f PA |
2586 | bp_excpt |
2587 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2588 | } |
492d29ea | 2589 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc | 2590 | { |
688fca4f | 2591 | bp_excpt = e; |
0000e5cc | 2592 | } |
492d29ea | 2593 | END_CATCH |
0000e5cc | 2594 | |
688fca4f | 2595 | if (bp_excpt.reason != 0) |
99361f52 | 2596 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2597 | "Overlay breakpoint %d " |
2598 | "failed: in ROM?\n", | |
35df4500 | 2599 | bl->owner->number); |
879bfdc2 DJ |
2600 | } |
2601 | } | |
2602 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2603 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2604 | { |
2605 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2606 | TRY |
dd61ec5c | 2607 | { |
0000e5cc PA |
2608 | int val; |
2609 | ||
dd61ec5c | 2610 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2611 | if (val) |
688fca4f | 2612 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2613 | } |
492d29ea | 2614 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2615 | { |
688fca4f | 2616 | bp_excpt = e; |
dd61ec5c | 2617 | } |
492d29ea | 2618 | END_CATCH |
879bfdc2 DJ |
2619 | } |
2620 | else | |
2621 | { | |
2622 | /* No. This breakpoint will not be inserted. | |
2623 | No error, but do not mark the bp as 'inserted'. */ | |
2624 | return 0; | |
2625 | } | |
2626 | } | |
2627 | ||
688fca4f | 2628 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2629 | { |
2630 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2631 | |
2632 | /* In some cases, we might not be able to insert a | |
2633 | breakpoint in a shared library that has already been | |
2634 | removed, but we have not yet processed the shlib unload | |
2635 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2636 | breakpoint insertion themselves can't tell why the |
2637 | breakpoint insertion failed (e.g., the remote target | |
2638 | doesn't define error codes), so we must treat generic | |
2639 | errors as memory errors. */ | |
688fca4f PA |
2640 | if (bp_excpt.reason == RETURN_ERROR |
2641 | && (bp_excpt.error == GENERIC_ERROR | |
2642 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2643 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2644 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2645 | || shared_objfile_contains_address_p (bl->pspace, |
2646 | bl->address))) | |
879bfdc2 | 2647 | { |
4a64f543 | 2648 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2649 | bl->shlib_disabled = 1; |
76727919 | 2650 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2651 | if (!*disabled_breaks) |
2652 | { | |
2653 | fprintf_unfiltered (tmp_error_stream, | |
2654 | "Cannot insert breakpoint %d.\n", | |
2655 | bl->owner->number); | |
2656 | fprintf_unfiltered (tmp_error_stream, | |
2657 | "Temporarily disabling shared " | |
2658 | "library breakpoints:\n"); | |
2659 | } | |
2660 | *disabled_breaks = 1; | |
879bfdc2 | 2661 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2662 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2663 | return 0; |
879bfdc2 DJ |
2664 | } |
2665 | else | |
879bfdc2 | 2666 | { |
35df4500 | 2667 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2668 | { |
0000e5cc | 2669 | *hw_breakpoint_error = 1; |
688fca4f | 2670 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2671 | fprintf_unfiltered (tmp_error_stream, |
2672 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2673 | bl->owner->number, |
2674 | bp_excpt.message ? ":" : ".\n"); | |
2675 | if (bp_excpt.message != NULL) | |
2676 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
2677 | bp_excpt.message); | |
879bfdc2 DJ |
2678 | } |
2679 | else | |
2680 | { | |
688fca4f | 2681 | if (bp_excpt.message == NULL) |
0000e5cc | 2682 | { |
1ccbe998 | 2683 | std::string message |
0000e5cc PA |
2684 | = memory_error_message (TARGET_XFER_E_IO, |
2685 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2686 | |
2687 | fprintf_unfiltered (tmp_error_stream, | |
2688 | "Cannot insert breakpoint %d.\n" | |
2689 | "%s\n", | |
1ccbe998 | 2690 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2691 | } |
2692 | else | |
2693 | { | |
2694 | fprintf_unfiltered (tmp_error_stream, | |
2695 | "Cannot insert breakpoint %d: %s\n", | |
2696 | bl->owner->number, | |
688fca4f | 2697 | bp_excpt.message); |
0000e5cc | 2698 | } |
879bfdc2 | 2699 | } |
0000e5cc | 2700 | return 1; |
879bfdc2 DJ |
2701 | |
2702 | } | |
2703 | } | |
2704 | else | |
35df4500 | 2705 | bl->inserted = 1; |
879bfdc2 | 2706 | |
0000e5cc | 2707 | return 0; |
879bfdc2 DJ |
2708 | } |
2709 | ||
35df4500 | 2710 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2711 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2712 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2713 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2714 | { |
0000e5cc PA |
2715 | int val; |
2716 | ||
77b06cd7 TJB |
2717 | gdb_assert (bl->owner->ops != NULL |
2718 | && bl->owner->ops->insert_location != NULL); | |
2719 | ||
2720 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2721 | |
2722 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2723 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2724 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2725 | { |
2726 | struct bp_location *loc, **loc_temp; | |
2727 | ||
2728 | /* But don't try to insert it, if there's already another | |
2729 | hw_access location that would be considered a duplicate | |
2730 | of this one. */ | |
2731 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2732 | if (loc != bl |
85d721b8 | 2733 | && loc->watchpoint_type == hw_access |
35df4500 | 2734 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2735 | { |
35df4500 TJB |
2736 | bl->duplicate = 1; |
2737 | bl->inserted = 1; | |
2738 | bl->target_info = loc->target_info; | |
2739 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2740 | val = 0; |
2741 | break; | |
2742 | } | |
2743 | ||
2744 | if (val == 1) | |
2745 | { | |
77b06cd7 TJB |
2746 | bl->watchpoint_type = hw_access; |
2747 | val = bl->owner->ops->insert_location (bl); | |
2748 | ||
2749 | if (val) | |
2750 | /* Back to the original value. */ | |
2751 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2752 | } |
2753 | } | |
2754 | ||
35df4500 | 2755 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2756 | } |
2757 | ||
35df4500 | 2758 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2759 | { |
0000e5cc PA |
2760 | int val; |
2761 | ||
77b06cd7 TJB |
2762 | gdb_assert (bl->owner->ops != NULL |
2763 | && bl->owner->ops->insert_location != NULL); | |
2764 | ||
2765 | val = bl->owner->ops->insert_location (bl); | |
2766 | if (val) | |
2767 | { | |
2768 | bl->owner->enable_state = bp_disabled; | |
2769 | ||
2770 | if (val == 1) | |
2771 | warning (_("\ | |
2772 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2773 | of catchpoint."), bl->owner->number); | |
2774 | else | |
2775 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2776 | } | |
2777 | ||
2778 | bl->inserted = (val == 0); | |
1640b821 DJ |
2779 | |
2780 | /* We've already printed an error message if there was a problem | |
2781 | inserting this catchpoint, and we've disabled the catchpoint, | |
2782 | so just return success. */ | |
2783 | return 0; | |
879bfdc2 DJ |
2784 | } |
2785 | ||
2786 | return 0; | |
2787 | } | |
2788 | ||
6c95b8df PA |
2789 | /* This function is called when program space PSPACE is about to be |
2790 | deleted. It takes care of updating breakpoints to not reference | |
2791 | PSPACE anymore. */ | |
2792 | ||
2793 | void | |
2794 | breakpoint_program_space_exit (struct program_space *pspace) | |
2795 | { | |
2796 | struct breakpoint *b, *b_temp; | |
876fa593 | 2797 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2798 | |
2799 | /* Remove any breakpoint that was set through this program space. */ | |
2800 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2801 | { | |
2802 | if (b->pspace == pspace) | |
2803 | delete_breakpoint (b); | |
2804 | } | |
2805 | ||
2806 | /* Breakpoints set through other program spaces could have locations | |
2807 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2808 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2809 | { |
2810 | struct bp_location *tmp; | |
2811 | ||
2812 | if (loc->pspace == pspace) | |
2813 | { | |
2bdf28a0 | 2814 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2815 | if (loc->owner->loc == loc) |
2816 | loc->owner->loc = loc->next; | |
2817 | else | |
2818 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2819 | if (tmp->next == loc) | |
2820 | { | |
2821 | tmp->next = loc->next; | |
2822 | break; | |
2823 | } | |
2824 | } | |
2825 | } | |
2826 | ||
2827 | /* Now update the global location list to permanently delete the | |
2828 | removed locations above. */ | |
44702360 | 2829 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2830 | } |
2831 | ||
74960c60 VP |
2832 | /* Make sure all breakpoints are inserted in inferior. |
2833 | Throws exception on any error. | |
2834 | A breakpoint that is already inserted won't be inserted | |
2835 | again, so calling this function twice is safe. */ | |
2836 | void | |
2837 | insert_breakpoints (void) | |
2838 | { | |
2839 | struct breakpoint *bpt; | |
2840 | ||
2841 | ALL_BREAKPOINTS (bpt) | |
2842 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2843 | { |
2844 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2845 | ||
2846 | update_watchpoint (w, 0 /* don't reparse. */); | |
2847 | } | |
74960c60 | 2848 | |
04086b45 PA |
2849 | /* Updating watchpoints creates new locations, so update the global |
2850 | location list. Explicitly tell ugll to insert locations and | |
2851 | ignore breakpoints_always_inserted_mode. */ | |
2852 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2853 | } |
2854 | ||
20388dd6 YQ |
2855 | /* Invoke CALLBACK for each of bp_location. */ |
2856 | ||
2857 | void | |
2858 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2859 | { | |
2860 | struct bp_location *loc, **loc_tmp; | |
2861 | ||
2862 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2863 | { | |
2864 | callback (loc, NULL); | |
2865 | } | |
2866 | } | |
2867 | ||
b775012e LM |
2868 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2869 | target. It is the case with deleting and disabling of breakpoints when using | |
2870 | always-inserted mode. */ | |
2871 | ||
2872 | static void | |
2873 | update_inserted_breakpoint_locations (void) | |
2874 | { | |
2875 | struct bp_location *bl, **blp_tmp; | |
2876 | int error_flag = 0; | |
2877 | int val = 0; | |
2878 | int disabled_breaks = 0; | |
2879 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2880 | int hw_bp_details_reported = 0; |
b775012e | 2881 | |
d7e74731 | 2882 | string_file tmp_error_stream; |
b775012e LM |
2883 | |
2884 | /* Explicitly mark the warning -- this will only be printed if | |
2885 | there was an error. */ | |
d7e74731 | 2886 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2887 | |
5ed8105e | 2888 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2889 | |
2890 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2891 | { | |
2892 | /* We only want to update software breakpoints and hardware | |
2893 | breakpoints. */ | |
2894 | if (!is_breakpoint (bl->owner)) | |
2895 | continue; | |
2896 | ||
2897 | /* We only want to update locations that are already inserted | |
2898 | and need updating. This is to avoid unwanted insertion during | |
2899 | deletion of breakpoints. */ | |
4daf1902 | 2900 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2901 | continue; |
2902 | ||
2903 | switch_to_program_space_and_thread (bl->pspace); | |
2904 | ||
2905 | /* For targets that support global breakpoints, there's no need | |
2906 | to select an inferior to insert breakpoint to. In fact, even | |
2907 | if we aren't attached to any process yet, we should still | |
2908 | insert breakpoints. */ | |
f5656ead | 2909 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2910 | && inferior_ptid == null_ptid) |
b775012e LM |
2911 | continue; |
2912 | ||
d7e74731 | 2913 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2914 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2915 | if (val) |
2916 | error_flag = val; | |
2917 | } | |
2918 | ||
2919 | if (error_flag) | |
2920 | { | |
223ffa71 | 2921 | target_terminal::ours_for_output (); |
b775012e LM |
2922 | error_stream (tmp_error_stream); |
2923 | } | |
b775012e LM |
2924 | } |
2925 | ||
c30eee59 | 2926 | /* Used when starting or continuing the program. */ |
c906108c | 2927 | |
74960c60 VP |
2928 | static void |
2929 | insert_breakpoint_locations (void) | |
c906108c | 2930 | { |
a5606eee | 2931 | struct breakpoint *bpt; |
35df4500 | 2932 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2933 | int error_flag = 0; |
c906108c | 2934 | int val = 0; |
3fbb6ffa | 2935 | int disabled_breaks = 0; |
81d0cc19 | 2936 | int hw_breakpoint_error = 0; |
dd61ec5c | 2937 | int hw_bp_error_explained_already = 0; |
c906108c | 2938 | |
d7e74731 PA |
2939 | string_file tmp_error_stream; |
2940 | ||
81d0cc19 GS |
2941 | /* Explicitly mark the warning -- this will only be printed if |
2942 | there was an error. */ | |
d7e74731 | 2943 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2944 | |
5ed8105e | 2945 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2946 | |
35df4500 | 2947 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2948 | { |
b775012e | 2949 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2950 | continue; |
2951 | ||
4a64f543 MS |
2952 | /* There is no point inserting thread-specific breakpoints if |
2953 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2954 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2955 | if (bl->owner->thread != -1 |
5d5658a1 | 2956 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2957 | continue; |
2958 | ||
35df4500 | 2959 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2960 | |
2961 | /* For targets that support global breakpoints, there's no need | |
2962 | to select an inferior to insert breakpoint to. In fact, even | |
2963 | if we aren't attached to any process yet, we should still | |
2964 | insert breakpoints. */ | |
f5656ead | 2965 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2966 | && inferior_ptid == null_ptid) |
6c95b8df PA |
2967 | continue; |
2968 | ||
d7e74731 | 2969 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2970 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2971 | if (val) |
eacd795a | 2972 | error_flag = val; |
879bfdc2 | 2973 | } |
c906108c | 2974 | |
4a64f543 MS |
2975 | /* If we failed to insert all locations of a watchpoint, remove |
2976 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2977 | ALL_BREAKPOINTS (bpt) |
2978 | { | |
2979 | int some_failed = 0; | |
2980 | struct bp_location *loc; | |
2981 | ||
2982 | if (!is_hardware_watchpoint (bpt)) | |
2983 | continue; | |
2984 | ||
d6b74ac4 | 2985 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2986 | continue; |
74960c60 VP |
2987 | |
2988 | if (bpt->disposition == disp_del_at_next_stop) | |
2989 | continue; | |
a5606eee VP |
2990 | |
2991 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2992 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2993 | { |
2994 | some_failed = 1; | |
2995 | break; | |
2996 | } | |
2997 | if (some_failed) | |
2998 | { | |
2999 | for (loc = bpt->loc; loc; loc = loc->next) | |
3000 | if (loc->inserted) | |
834c0d03 | 3001 | remove_breakpoint (loc); |
a5606eee VP |
3002 | |
3003 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3004 | tmp_error_stream.printf ("Could not insert " |
3005 | "hardware watchpoint %d.\n", | |
3006 | bpt->number); | |
eacd795a | 3007 | error_flag = -1; |
a5606eee VP |
3008 | } |
3009 | } | |
3010 | ||
eacd795a | 3011 | if (error_flag) |
81d0cc19 GS |
3012 | { |
3013 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3014 | message about possibly exhausted resources. */ | |
dd61ec5c | 3015 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3016 | { |
d7e74731 | 3017 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3018 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3019 | } |
223ffa71 | 3020 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3021 | error_stream (tmp_error_stream); |
3022 | } | |
c906108c SS |
3023 | } |
3024 | ||
c30eee59 TJB |
3025 | /* Used when the program stops. |
3026 | Returns zero if successful, or non-zero if there was a problem | |
3027 | removing a breakpoint location. */ | |
3028 | ||
c906108c | 3029 | int |
fba45db2 | 3030 | remove_breakpoints (void) |
c906108c | 3031 | { |
35df4500 | 3032 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3033 | int val = 0; |
c906108c | 3034 | |
35df4500 | 3035 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3036 | { |
1e4d1764 | 3037 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3038 | val |= remove_breakpoint (bl); |
c5aa993b | 3039 | } |
3a1bae8e | 3040 | return val; |
c906108c SS |
3041 | } |
3042 | ||
49fa26b0 PA |
3043 | /* When a thread exits, remove breakpoints that are related to |
3044 | that thread. */ | |
3045 | ||
3046 | static void | |
3047 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3048 | { | |
3049 | struct breakpoint *b, *b_tmp; | |
3050 | ||
3051 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3052 | { | |
5d5658a1 | 3053 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3054 | { |
3055 | b->disposition = disp_del_at_next_stop; | |
3056 | ||
3057 | printf_filtered (_("\ | |
43792cf0 PA |
3058 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3059 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3060 | |
3061 | /* Hide it from the user. */ | |
3062 | b->number = 0; | |
3063 | } | |
3064 | } | |
3065 | } | |
3066 | ||
00431a78 | 3067 | /* Remove breakpoints of inferior INF. */ |
6c95b8df PA |
3068 | |
3069 | int | |
00431a78 | 3070 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3071 | { |
35df4500 | 3072 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3073 | int val; |
6c95b8df | 3074 | |
35df4500 | 3075 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3076 | { |
35df4500 | 3077 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3078 | continue; |
3079 | ||
fc126975 | 3080 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3081 | { |
834c0d03 | 3082 | val = remove_breakpoint (bl); |
6c95b8df PA |
3083 | if (val != 0) |
3084 | return val; | |
3085 | } | |
3086 | } | |
3087 | return 0; | |
3088 | } | |
3089 | ||
e58b0e63 PA |
3090 | static int internal_breakpoint_number = -1; |
3091 | ||
84f4c1fe PM |
3092 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3093 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3094 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3095 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3096 | breakpoint_count and that value incremented. Internal breakpoints |
3097 | do not set the internal var bpnum. */ | |
3098 | static void | |
3099 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3100 | { | |
3101 | if (internal) | |
3102 | b->number = internal_breakpoint_number--; | |
3103 | else | |
3104 | { | |
3105 | set_breakpoint_count (breakpoint_count + 1); | |
3106 | b->number = breakpoint_count; | |
3107 | } | |
3108 | } | |
3109 | ||
e62c965a | 3110 | static struct breakpoint * |
a6d9a66e | 3111 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3112 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3113 | const struct breakpoint_ops *ops) |
e62c965a | 3114 | { |
51abb421 | 3115 | symtab_and_line sal; |
e62c965a PP |
3116 | sal.pc = address; |
3117 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3118 | sal.pspace = current_program_space; |
e62c965a | 3119 | |
51abb421 | 3120 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3121 | b->number = internal_breakpoint_number--; |
3122 | b->disposition = disp_donttouch; | |
3123 | ||
3124 | return b; | |
3125 | } | |
3126 | ||
17450429 PP |
3127 | static const char *const longjmp_names[] = |
3128 | { | |
3129 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3130 | }; | |
3131 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3132 | ||
3133 | /* Per-objfile data private to breakpoint.c. */ | |
3134 | struct breakpoint_objfile_data | |
3135 | { | |
3136 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3137 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3138 | |
3139 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3140 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3141 | |
28106bc2 | 3142 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3143 | int longjmp_searched = 0; |
28106bc2 | 3144 | |
45461e0d SM |
3145 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3146 | references. */ | |
3147 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3148 | |
17450429 | 3149 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3150 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3151 | |
3152 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3153 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3154 | |
3155 | /* True if we have looked for exception probes. */ | |
43dce439 | 3156 | int exception_searched = 0; |
28106bc2 | 3157 | |
45461e0d SM |
3158 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3159 | references. */ | |
3160 | std::vector<probe *> exception_probes; | |
17450429 PP |
3161 | }; |
3162 | ||
3163 | static const struct objfile_data *breakpoint_objfile_key; | |
3164 | ||
3165 | /* Minimal symbol not found sentinel. */ | |
3166 | static struct minimal_symbol msym_not_found; | |
3167 | ||
3168 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3169 | ||
3170 | static int | |
3171 | msym_not_found_p (const struct minimal_symbol *msym) | |
3172 | { | |
3173 | return msym == &msym_not_found; | |
3174 | } | |
3175 | ||
3176 | /* Return per-objfile data needed by breakpoint.c. | |
3177 | Allocate the data if necessary. */ | |
3178 | ||
3179 | static struct breakpoint_objfile_data * | |
3180 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3181 | { | |
3182 | struct breakpoint_objfile_data *bp_objfile_data; | |
3183 | ||
9a3c8263 SM |
3184 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3185 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3186 | if (bp_objfile_data == NULL) |
3187 | { | |
43dce439 | 3188 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3189 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3190 | } | |
3191 | return bp_objfile_data; | |
3192 | } | |
3193 | ||
28106bc2 | 3194 | static void |
43dce439 | 3195 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3196 | { |
9a3c8263 SM |
3197 | struct breakpoint_objfile_data *bp_objfile_data |
3198 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3199 | |
43dce439 | 3200 | delete bp_objfile_data; |
28106bc2 SDJ |
3201 | } |
3202 | ||
e62c965a | 3203 | static void |
af02033e | 3204 | create_overlay_event_breakpoint (void) |
e62c965a | 3205 | { |
69de3c6a | 3206 | struct objfile *objfile; |
af02033e | 3207 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3208 | |
69de3c6a PP |
3209 | ALL_OBJFILES (objfile) |
3210 | { | |
3211 | struct breakpoint *b; | |
17450429 PP |
3212 | struct breakpoint_objfile_data *bp_objfile_data; |
3213 | CORE_ADDR addr; | |
67994074 | 3214 | struct explicit_location explicit_loc; |
69de3c6a | 3215 | |
17450429 PP |
3216 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3217 | ||
3b7344d5 | 3218 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3219 | continue; |
3220 | ||
3b7344d5 | 3221 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3222 | { |
3b7344d5 | 3223 | struct bound_minimal_symbol m; |
17450429 PP |
3224 | |
3225 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3226 | if (m.minsym == NULL) |
17450429 PP |
3227 | { |
3228 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3229 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3230 | continue; |
3231 | } | |
3232 | bp_objfile_data->overlay_msym = m; | |
3233 | } | |
e62c965a | 3234 | |
77e371c0 | 3235 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3236 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3237 | bp_overlay_event, |
3238 | &internal_breakpoint_ops); | |
67994074 KS |
3239 | initialize_explicit_location (&explicit_loc); |
3240 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3241 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3242 | |
69de3c6a PP |
3243 | if (overlay_debugging == ovly_auto) |
3244 | { | |
3245 | b->enable_state = bp_enabled; | |
3246 | overlay_events_enabled = 1; | |
3247 | } | |
3248 | else | |
3249 | { | |
3250 | b->enable_state = bp_disabled; | |
3251 | overlay_events_enabled = 0; | |
3252 | } | |
e62c965a | 3253 | } |
e62c965a PP |
3254 | } |
3255 | ||
0fd8e87f | 3256 | static void |
af02033e | 3257 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3258 | { |
6c95b8df | 3259 | struct program_space *pspace; |
6c95b8df | 3260 | |
5ed8105e | 3261 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3262 | |
6c95b8df | 3263 | ALL_PSPACES (pspace) |
af02033e PP |
3264 | { |
3265 | struct objfile *objfile; | |
3266 | ||
3267 | set_current_program_space (pspace); | |
3268 | ||
3269 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3270 | { |
af02033e PP |
3271 | int i; |
3272 | struct gdbarch *gdbarch; | |
17450429 | 3273 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3274 | |
af02033e | 3275 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3276 | |
17450429 PP |
3277 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3278 | ||
28106bc2 SDJ |
3279 | if (!bp_objfile_data->longjmp_searched) |
3280 | { | |
45461e0d SM |
3281 | std::vector<probe *> ret |
3282 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3283 | |
45461e0d | 3284 | if (!ret.empty ()) |
25f9533e SDJ |
3285 | { |
3286 | /* We are only interested in checking one element. */ | |
45461e0d | 3287 | probe *p = ret[0]; |
25f9533e | 3288 | |
935676c9 | 3289 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3290 | { |
3291 | /* We cannot use the probe interface here, because it does | |
3292 | not know how to evaluate arguments. */ | |
45461e0d | 3293 | ret.clear (); |
25f9533e SDJ |
3294 | } |
3295 | } | |
3296 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3297 | bp_objfile_data->longjmp_searched = 1; |
3298 | } | |
3299 | ||
45461e0d | 3300 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3301 | { |
45461e0d | 3302 | for (probe *p : bp_objfile_data->longjmp_probes) |
28106bc2 SDJ |
3303 | { |
3304 | struct breakpoint *b; | |
3305 | ||
729662a5 | 3306 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3307 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3308 | bp_longjmp_master, |
3309 | &internal_breakpoint_ops); | |
d28cd78a | 3310 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3311 | b->enable_state = bp_disabled; |
3312 | } | |
3313 | ||
3314 | continue; | |
3315 | } | |
3316 | ||
0569175e TSD |
3317 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3318 | continue; | |
3319 | ||
17450429 | 3320 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3321 | { |
3322 | struct breakpoint *b; | |
af02033e | 3323 | const char *func_name; |
17450429 | 3324 | CORE_ADDR addr; |
67994074 | 3325 | struct explicit_location explicit_loc; |
6c95b8df | 3326 | |
3b7344d5 | 3327 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3328 | continue; |
0fd8e87f | 3329 | |
17450429 | 3330 | func_name = longjmp_names[i]; |
3b7344d5 | 3331 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3332 | { |
3b7344d5 | 3333 | struct bound_minimal_symbol m; |
17450429 PP |
3334 | |
3335 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3336 | if (m.minsym == NULL) |
17450429 PP |
3337 | { |
3338 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3339 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3340 | continue; |
3341 | } | |
3342 | bp_objfile_data->longjmp_msym[i] = m; | |
3343 | } | |
3344 | ||
77e371c0 | 3345 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3346 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3347 | &internal_breakpoint_ops); | |
67994074 KS |
3348 | initialize_explicit_location (&explicit_loc); |
3349 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3350 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3351 | b->enable_state = bp_disabled; |
3352 | } | |
0fd8e87f | 3353 | } |
af02033e | 3354 | } |
0fd8e87f UW |
3355 | } |
3356 | ||
af02033e | 3357 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3358 | static void |
af02033e | 3359 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3360 | { |
3361 | struct program_space *pspace; | |
af02033e | 3362 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3363 | |
5ed8105e | 3364 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3365 | |
3366 | ALL_PSPACES (pspace) | |
17450429 PP |
3367 | { |
3368 | struct objfile *objfile; | |
3369 | CORE_ADDR addr; | |
3370 | ||
3371 | set_current_program_space (pspace); | |
3372 | ||
aa7d318d TT |
3373 | ALL_OBJFILES (objfile) |
3374 | { | |
3375 | struct breakpoint *b; | |
17450429 | 3376 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3377 | struct explicit_location explicit_loc; |
aa7d318d | 3378 | |
17450429 | 3379 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3380 | |
3b7344d5 | 3381 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3382 | continue; |
3383 | ||
3b7344d5 | 3384 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3385 | { |
3b7344d5 | 3386 | struct bound_minimal_symbol m; |
17450429 PP |
3387 | |
3388 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3389 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3390 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3391 | { |
3392 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3393 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3394 | continue; |
3395 | } | |
3396 | bp_objfile_data->terminate_msym = m; | |
3397 | } | |
aa7d318d | 3398 | |
77e371c0 | 3399 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3400 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3401 | bp_std_terminate_master, |
3402 | &internal_breakpoint_ops); | |
67994074 KS |
3403 | initialize_explicit_location (&explicit_loc); |
3404 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3405 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3406 | b->enable_state = bp_disabled; |
3407 | } | |
17450429 | 3408 | } |
aa7d318d TT |
3409 | } |
3410 | ||
186c406b TT |
3411 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3412 | ||
70221824 | 3413 | static void |
186c406b TT |
3414 | create_exception_master_breakpoint (void) |
3415 | { | |
3416 | struct objfile *objfile; | |
17450429 | 3417 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3418 | |
3419 | ALL_OBJFILES (objfile) | |
3420 | { | |
17450429 PP |
3421 | struct breakpoint *b; |
3422 | struct gdbarch *gdbarch; | |
3423 | struct breakpoint_objfile_data *bp_objfile_data; | |
3424 | CORE_ADDR addr; | |
67994074 | 3425 | struct explicit_location explicit_loc; |
17450429 PP |
3426 | |
3427 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3428 | ||
28106bc2 SDJ |
3429 | /* We prefer the SystemTap probe point if it exists. */ |
3430 | if (!bp_objfile_data->exception_searched) | |
3431 | { | |
45461e0d SM |
3432 | std::vector<probe *> ret |
3433 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3434 | |
45461e0d | 3435 | if (!ret.empty ()) |
25f9533e SDJ |
3436 | { |
3437 | /* We are only interested in checking one element. */ | |
45461e0d | 3438 | probe *p = ret[0]; |
25f9533e | 3439 | |
935676c9 | 3440 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3441 | { |
3442 | /* We cannot use the probe interface here, because it does | |
3443 | not know how to evaluate arguments. */ | |
45461e0d | 3444 | ret.clear (); |
25f9533e SDJ |
3445 | } |
3446 | } | |
3447 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3448 | bp_objfile_data->exception_searched = 1; |
3449 | } | |
3450 | ||
45461e0d | 3451 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3452 | { |
b926417a | 3453 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3454 | |
3455 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3456 | { |
729662a5 | 3457 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3458 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3459 | bp_exception_master, |
3460 | &internal_breakpoint_ops); | |
d28cd78a | 3461 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3462 | b->enable_state = bp_disabled; |
3463 | } | |
3464 | ||
3465 | continue; | |
3466 | } | |
3467 | ||
3468 | /* Otherwise, try the hook function. */ | |
3469 | ||
3b7344d5 | 3470 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3471 | continue; |
3472 | ||
3473 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3474 | |
3b7344d5 | 3475 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3476 | { |
3b7344d5 | 3477 | struct bound_minimal_symbol debug_hook; |
186c406b | 3478 | |
17450429 | 3479 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3480 | if (debug_hook.minsym == NULL) |
17450429 | 3481 | { |
3b7344d5 | 3482 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3483 | continue; |
3484 | } | |
3485 | ||
3486 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3487 | } |
17450429 | 3488 | |
77e371c0 | 3489 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3490 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3491 | current_top_target ()); | |
06edf0c0 PA |
3492 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3493 | &internal_breakpoint_ops); | |
67994074 KS |
3494 | initialize_explicit_location (&explicit_loc); |
3495 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3496 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3497 | b->enable_state = bp_disabled; |
186c406b | 3498 | } |
186c406b TT |
3499 | } |
3500 | ||
9ef9e6a6 KS |
3501 | /* Does B have a location spec? */ |
3502 | ||
3503 | static int | |
3504 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3505 | { | |
d28cd78a | 3506 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3507 | } |
3508 | ||
c906108c | 3509 | void |
fba45db2 | 3510 | update_breakpoints_after_exec (void) |
c906108c | 3511 | { |
35df4500 | 3512 | struct breakpoint *b, *b_tmp; |
876fa593 | 3513 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3514 | |
25b22b0a PA |
3515 | /* We're about to delete breakpoints from GDB's lists. If the |
3516 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3517 | writing the breakpoints' "shadow contents" back into memory. The | |
3518 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3519 | do that. Instead, the target is responsible from marking | |
3520 | breakpoints out as soon as it detects an exec. We don't do that | |
3521 | here instead, because there may be other attempts to delete | |
3522 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3523 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3524 | if (bploc->pspace == current_program_space) |
3525 | gdb_assert (!bploc->inserted); | |
c906108c | 3526 | |
35df4500 | 3527 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3528 | { |
6c95b8df PA |
3529 | if (b->pspace != current_program_space) |
3530 | continue; | |
3531 | ||
4a64f543 | 3532 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3533 | if (b->type == bp_shlib_event) |
3534 | { | |
3535 | delete_breakpoint (b); | |
3536 | continue; | |
3537 | } | |
c906108c | 3538 | |
4a64f543 | 3539 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3540 | if (b->type == bp_jit_event) |
3541 | { | |
3542 | delete_breakpoint (b); | |
3543 | continue; | |
3544 | } | |
3545 | ||
1900040c | 3546 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3547 | as must overlay event and longjmp master breakpoints. */ |
3548 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3549 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3550 | || b->type == bp_exception_master) | |
c4093a6a JM |
3551 | { |
3552 | delete_breakpoint (b); | |
3553 | continue; | |
3554 | } | |
3555 | ||
4a64f543 | 3556 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3557 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3558 | { |
3559 | delete_breakpoint (b); | |
3560 | continue; | |
3561 | } | |
3562 | ||
7c16b83e PA |
3563 | /* Just like single-step breakpoints. */ |
3564 | if (b->type == bp_single_step) | |
3565 | { | |
3566 | delete_breakpoint (b); | |
3567 | continue; | |
3568 | } | |
3569 | ||
611c83ae PA |
3570 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3571 | after an exec. */ | |
186c406b | 3572 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3573 | || b->type == bp_longjmp_call_dummy |
186c406b | 3574 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3575 | { |
3576 | delete_breakpoint (b); | |
3577 | continue; | |
3578 | } | |
3579 | ||
ce78b96d JB |
3580 | if (b->type == bp_catchpoint) |
3581 | { | |
3582 | /* For now, none of the bp_catchpoint breakpoints need to | |
3583 | do anything at this point. In the future, if some of | |
3584 | the catchpoints need to something, we will need to add | |
3585 | a new method, and call this method from here. */ | |
3586 | continue; | |
3587 | } | |
3588 | ||
c5aa993b JM |
3589 | /* bp_finish is a special case. The only way we ought to be able |
3590 | to see one of these when an exec() has happened, is if the user | |
3591 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3592 | carries them to the call-site of the current callee, by setting | |
3593 | a temporary bp there and resuming. But in this case, the finish | |
3594 | will carry them entirely through the vfork & exec. | |
3595 | ||
3596 | We don't want to allow a bp_finish to remain inserted now. But | |
3597 | we can't safely delete it, 'cause finish_command has a handle to | |
3598 | the bp on a bpstat, and will later want to delete it. There's a | |
3599 | chance (and I've seen it happen) that if we delete the bp_finish | |
3600 | here, that its storage will get reused by the time finish_command | |
3601 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3602 | We really must allow finish_command to delete a bp_finish. | |
3603 | ||
e5dd4106 | 3604 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3605 | it's safe to delete something others may have handles to?" |
3606 | problem, what we'll do here is just uninsert the bp_finish, and | |
3607 | let finish_command delete it. | |
3608 | ||
3609 | (We know the bp_finish is "doomed" in the sense that it's | |
3610 | momentary, and will be deleted as soon as finish_command sees | |
3611 | the inferior stopped. So it doesn't matter that the bp's | |
3612 | address is probably bogus in the new a.out, unlike e.g., the | |
3613 | solib breakpoints.) */ | |
c5aa993b | 3614 | |
c5aa993b JM |
3615 | if (b->type == bp_finish) |
3616 | { | |
3617 | continue; | |
3618 | } | |
3619 | ||
3620 | /* Without a symbolic address, we have little hope of the | |
3621 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3622 | a.out. */ |
9ef9e6a6 | 3623 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3624 | { |
3625 | delete_breakpoint (b); | |
3626 | continue; | |
3627 | } | |
c5aa993b | 3628 | } |
c906108c SS |
3629 | } |
3630 | ||
3631 | int | |
d80ee84f | 3632 | detach_breakpoints (ptid_t ptid) |
c906108c | 3633 | { |
35df4500 | 3634 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3635 | int val = 0; |
2989a365 | 3636 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3637 | struct inferior *inf = current_inferior (); |
c5aa993b | 3638 | |
e99b03dc | 3639 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3640 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3641 | |
6c95b8df | 3642 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3643 | inferior_ptid = ptid; |
35df4500 | 3644 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3645 | { |
35df4500 | 3646 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3647 | continue; |
3648 | ||
bd9673a4 PW |
3649 | /* This function must physically remove breakpoints locations |
3650 | from the specified ptid, without modifying the breakpoint | |
3651 | package's state. Locations of type bp_loc_other are only | |
3652 | maintained at GDB side. So, there is no need to remove | |
3653 | these bp_loc_other locations. Moreover, removing these | |
3654 | would modify the breakpoint package's state. */ | |
3655 | if (bl->loc_type == bp_loc_other) | |
3656 | continue; | |
3657 | ||
35df4500 | 3658 | if (bl->inserted) |
b2b6a7da | 3659 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3660 | } |
d03285ec | 3661 | |
3a1bae8e | 3662 | return val; |
c906108c SS |
3663 | } |
3664 | ||
35df4500 | 3665 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3666 | Note that this is used to detach breakpoints from a child fork. |
3667 | When we get here, the child isn't in the inferior list, and neither | |
3668 | do we have objects to represent its address space --- we should | |
35df4500 | 3669 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3670 | |
c906108c | 3671 | static int |
b2b6a7da | 3672 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3673 | { |
3674 | int val; | |
c5aa993b | 3675 | |
35df4500 TJB |
3676 | /* BL is never in moribund_locations by our callers. */ |
3677 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3678 | |
74960c60 VP |
3679 | /* The type of none suggests that owner is actually deleted. |
3680 | This should not ever happen. */ | |
35df4500 | 3681 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3682 | |
35df4500 TJB |
3683 | if (bl->loc_type == bp_loc_software_breakpoint |
3684 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3685 | { |
c02f5703 MS |
3686 | /* "Normal" instruction breakpoint: either the standard |
3687 | trap-instruction bp (bp_breakpoint), or a | |
3688 | bp_hardware_breakpoint. */ | |
3689 | ||
3690 | /* First check to see if we have to handle an overlay. */ | |
3691 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3692 | || bl->section == NULL |
3693 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3694 | { |
3695 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3696 | |
3697 | /* If we're trying to uninsert a memory breakpoint that we | |
3698 | know is set in a dynamic object that is marked | |
3699 | shlib_disabled, then either the dynamic object was | |
3700 | removed with "remove-symbol-file" or with | |
3701 | "nosharedlibrary". In the former case, we don't know | |
3702 | whether another dynamic object might have loaded over the | |
3703 | breakpoint's address -- the user might well let us know | |
3704 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3705 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3706 | list of dynamically loaded objects). If we have the |
3707 | breakpoint's shadow memory, that is, this is a software | |
3708 | breakpoint managed by GDB, check whether the breakpoint | |
3709 | is still inserted in memory, to avoid overwriting wrong | |
3710 | code with stale saved shadow contents. Note that HW | |
3711 | breakpoints don't have shadow memory, as they're | |
3712 | implemented using a mechanism that is not dependent on | |
3713 | being able to modify the target's memory, and as such | |
3714 | they should always be removed. */ | |
3715 | if (bl->shlib_disabled | |
3716 | && bl->target_info.shadow_len != 0 | |
3717 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3718 | val = 0; | |
3719 | else | |
73971819 | 3720 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3721 | } |
c906108c SS |
3722 | else |
3723 | { | |
4a64f543 | 3724 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3725 | Did we set a breakpoint at the LMA? */ |
3726 | if (!overlay_events_enabled) | |
3727 | { | |
3728 | /* Yes -- overlay event support is not active, so we | |
3729 | should have set a breakpoint at the LMA. Remove it. | |
3730 | */ | |
c02f5703 MS |
3731 | /* Ignore any failures: if the LMA is in ROM, we will |
3732 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3733 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3734 | target_remove_hw_breakpoint (bl->gdbarch, | |
3735 | &bl->overlay_target_info); | |
c02f5703 | 3736 | else |
35df4500 | 3737 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3738 | &bl->overlay_target_info, |
3739 | reason); | |
c02f5703 MS |
3740 | } |
3741 | /* Did we set a breakpoint at the VMA? | |
3742 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3743 | if (bl->inserted) |
c906108c | 3744 | { |
c02f5703 MS |
3745 | /* Yes -- remove it. Previously we did not bother to |
3746 | remove the breakpoint if the section had been | |
3747 | unmapped, but let's not rely on that being safe. We | |
3748 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3749 | |
3750 | /* However, we should remove *software* breakpoints only | |
3751 | if the section is still mapped, or else we overwrite | |
3752 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3753 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3754 | || section_is_mapped (bl->section)) | |
73971819 | 3755 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3756 | else |
3757 | val = 0; | |
c906108c | 3758 | } |
c02f5703 MS |
3759 | else |
3760 | { | |
3761 | /* No -- not inserted, so no need to remove. No error. */ | |
3762 | val = 0; | |
3763 | } | |
c906108c | 3764 | } |
879d1e6b | 3765 | |
08351840 PA |
3766 | /* In some cases, we might not be able to remove a breakpoint in |
3767 | a shared library that has already been removed, but we have | |
3768 | not yet processed the shlib unload event. Similarly for an | |
3769 | unloaded add-symbol-file object - the user might not yet have | |
3770 | had the chance to remove-symbol-file it. shlib_disabled will | |
3771 | be set if the library/object has already been removed, but | |
3772 | the breakpoint hasn't been uninserted yet, e.g., after | |
3773 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3774 | always-inserted mode. */ | |
076855f9 | 3775 | if (val |
08351840 PA |
3776 | && (bl->loc_type == bp_loc_software_breakpoint |
3777 | && (bl->shlib_disabled | |
3778 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3779 | || shared_objfile_contains_address_p (bl->pspace, |
3780 | bl->address)))) | |
879d1e6b UW |
3781 | val = 0; |
3782 | ||
c906108c SS |
3783 | if (val) |
3784 | return val; | |
b2b6a7da | 3785 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3786 | } |
35df4500 | 3787 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3788 | { |
77b06cd7 TJB |
3789 | gdb_assert (bl->owner->ops != NULL |
3790 | && bl->owner->ops->remove_location != NULL); | |
3791 | ||
b2b6a7da | 3792 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3793 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3794 | |
c906108c | 3795 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3796 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3797 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3798 | bl->owner->number); |
c906108c | 3799 | } |
35df4500 TJB |
3800 | else if (bl->owner->type == bp_catchpoint |
3801 | && breakpoint_enabled (bl->owner) | |
3802 | && !bl->duplicate) | |
ce78b96d | 3803 | { |
77b06cd7 TJB |
3804 | gdb_assert (bl->owner->ops != NULL |
3805 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3806 | |
73971819 | 3807 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3808 | if (val) |
3809 | return val; | |
77b06cd7 | 3810 | |
b2b6a7da | 3811 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3812 | } |
c906108c SS |
3813 | |
3814 | return 0; | |
3815 | } | |
3816 | ||
6c95b8df | 3817 | static int |
834c0d03 | 3818 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3819 | { |
35df4500 TJB |
3820 | /* BL is never in moribund_locations by our callers. */ |
3821 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3822 | |
6c95b8df PA |
3823 | /* The type of none suggests that owner is actually deleted. |
3824 | This should not ever happen. */ | |
35df4500 | 3825 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3826 | |
5ed8105e | 3827 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3828 | |
35df4500 | 3829 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3830 | |
5ed8105e | 3831 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3832 | } |
3833 | ||
c906108c SS |
3834 | /* Clear the "inserted" flag in all breakpoints. */ |
3835 | ||
25b22b0a | 3836 | void |
fba45db2 | 3837 | mark_breakpoints_out (void) |
c906108c | 3838 | { |
35df4500 | 3839 | struct bp_location *bl, **blp_tmp; |
c906108c | 3840 | |
35df4500 | 3841 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3842 | if (bl->pspace == current_program_space) |
35df4500 | 3843 | bl->inserted = 0; |
c906108c SS |
3844 | } |
3845 | ||
53a5351d JM |
3846 | /* Clear the "inserted" flag in all breakpoints and delete any |
3847 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3848 | |
3849 | Plus other such housekeeping that has to be done for breakpoints | |
3850 | between runs. | |
3851 | ||
53a5351d JM |
3852 | Note: this function gets called at the end of a run (by |
3853 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3854 | init_wait_for_inferior). */ |
c906108c SS |
3855 | |
3856 | ||
3857 | ||
3858 | void | |
fba45db2 | 3859 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3860 | { |
35df4500 | 3861 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3862 | struct program_space *pspace = current_program_space; |
c906108c | 3863 | |
50c71eaf PA |
3864 | /* If breakpoint locations are shared across processes, then there's |
3865 | nothing to do. */ | |
f5656ead | 3866 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3867 | return; |
3868 | ||
1a853c52 | 3869 | mark_breakpoints_out (); |
075f6582 | 3870 | |
35df4500 | 3871 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3872 | { |
6c95b8df PA |
3873 | if (b->loc && b->loc->pspace != pspace) |
3874 | continue; | |
3875 | ||
c5aa993b JM |
3876 | switch (b->type) |
3877 | { | |
3878 | case bp_call_dummy: | |
e2e4d78b | 3879 | case bp_longjmp_call_dummy: |
c906108c | 3880 | |
c5aa993b | 3881 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3882 | cause problems when the inferior is rerun, so we better get |
3883 | rid of it. */ | |
3884 | ||
3885 | case bp_watchpoint_scope: | |
3886 | ||
3887 | /* Also get rid of scope breakpoints. */ | |
3888 | ||
3889 | case bp_shlib_event: | |
3890 | ||
3891 | /* Also remove solib event breakpoints. Their addresses may | |
3892 | have changed since the last time we ran the program. | |
3893 | Actually we may now be debugging against different target; | |
3894 | and so the solib backend that installed this breakpoint may | |
3895 | not be used in by the target. E.g., | |
3896 | ||
3897 | (gdb) file prog-linux | |
3898 | (gdb) run # native linux target | |
3899 | ... | |
3900 | (gdb) kill | |
3901 | (gdb) file prog-win.exe | |
3902 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3903 | */ | |
c906108c | 3904 | |
f59f708a PA |
3905 | case bp_step_resume: |
3906 | ||
3907 | /* Also remove step-resume breakpoints. */ | |
3908 | ||
7c16b83e PA |
3909 | case bp_single_step: |
3910 | ||
3911 | /* Also remove single-step breakpoints. */ | |
3912 | ||
c5aa993b JM |
3913 | delete_breakpoint (b); |
3914 | break; | |
c906108c | 3915 | |
c5aa993b JM |
3916 | case bp_watchpoint: |
3917 | case bp_hardware_watchpoint: | |
3918 | case bp_read_watchpoint: | |
3919 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3920 | { |
3921 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3922 | |
3a5c3e22 PA |
3923 | /* Likewise for watchpoints on local expressions. */ |
3924 | if (w->exp_valid_block != NULL) | |
3925 | delete_breakpoint (b); | |
63000888 | 3926 | else |
3a5c3e22 | 3927 | { |
63000888 PA |
3928 | /* Get rid of existing locations, which are no longer |
3929 | valid. New ones will be created in | |
3930 | update_watchpoint, when the inferior is restarted. | |
3931 | The next update_global_location_list call will | |
3932 | garbage collect them. */ | |
3933 | b->loc = NULL; | |
3934 | ||
3935 | if (context == inf_starting) | |
3936 | { | |
3937 | /* Reset val field to force reread of starting value in | |
3938 | insert_breakpoints. */ | |
850645cf | 3939 | w->val.reset (nullptr); |
63000888 PA |
3940 | w->val_valid = 0; |
3941 | } | |
3942 | } | |
3a5c3e22 | 3943 | } |
c5aa993b JM |
3944 | break; |
3945 | default: | |
c5aa993b JM |
3946 | break; |
3947 | } | |
3948 | } | |
1c5cfe86 PA |
3949 | |
3950 | /* Get rid of the moribund locations. */ | |
1123588c | 3951 | for (bp_location *bl : moribund_locations) |
35df4500 | 3952 | decref_bp_location (&bl); |
1123588c | 3953 | moribund_locations.clear (); |
c906108c SS |
3954 | } |
3955 | ||
6c95b8df PA |
3956 | /* These functions concern about actual breakpoints inserted in the |
3957 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3958 | we need to hop over the bkpt --- so we check for address space | |
3959 | match, not program space. */ | |
3960 | ||
c2c6d25f JM |
3961 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3962 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3963 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3964 | permanent breakpoint. | |
3965 | - When continuing from a location with an ordinary breakpoint, we | |
3966 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3967 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3968 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3969 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3970 | |
c2c6d25f | 3971 | enum breakpoint_here |
accd0bcd | 3972 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3973 | { |
35df4500 | 3974 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3975 | int any_breakpoint_here = 0; |
c906108c | 3976 | |
35df4500 | 3977 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3978 | { |
35df4500 TJB |
3979 | if (bl->loc_type != bp_loc_software_breakpoint |
3980 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3981 | continue; |
3982 | ||
f1310107 | 3983 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3984 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3985 | || bl->permanent) |
f1310107 | 3986 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3987 | { |
3988 | if (overlay_debugging | |
35df4500 TJB |
3989 | && section_is_overlay (bl->section) |
3990 | && !section_is_mapped (bl->section)) | |
075f6582 | 3991 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3992 | else if (bl->permanent) |
075f6582 DJ |
3993 | return permanent_breakpoint_here; |
3994 | else | |
3995 | any_breakpoint_here = 1; | |
3996 | } | |
3997 | } | |
c906108c | 3998 | |
f486487f | 3999 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4000 | } |
4001 | ||
d35ae833 PA |
4002 | /* See breakpoint.h. */ |
4003 | ||
4004 | int | |
accd0bcd | 4005 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4006 | CORE_ADDR addr, ULONGEST len) |
4007 | { | |
4008 | struct bp_location *bl, **blp_tmp; | |
4009 | ||
4010 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4011 | { | |
4012 | if (bl->loc_type != bp_loc_software_breakpoint | |
4013 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4014 | continue; | |
4015 | ||
4016 | if ((breakpoint_enabled (bl->owner) | |
4017 | || bl->permanent) | |
4018 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4019 | addr, len)) | |
4020 | { | |
4021 | if (overlay_debugging | |
4022 | && section_is_overlay (bl->section) | |
4023 | && !section_is_mapped (bl->section)) | |
4024 | { | |
4025 | /* Unmapped overlay -- can't be a match. */ | |
4026 | continue; | |
4027 | } | |
4028 | ||
4029 | return 1; | |
4030 | } | |
4031 | } | |
4032 | ||
4033 | return 0; | |
4034 | } | |
4035 | ||
1c5cfe86 PA |
4036 | /* Return true if there's a moribund breakpoint at PC. */ |
4037 | ||
4038 | int | |
accd0bcd | 4039 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4040 | { |
1123588c | 4041 | for (bp_location *loc : moribund_locations) |
f1310107 | 4042 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4043 | return 1; |
4044 | ||
4045 | return 0; | |
4046 | } | |
c2c6d25f | 4047 | |
f7ce857f PA |
4048 | /* Returns non-zero iff BL is inserted at PC, in address space |
4049 | ASPACE. */ | |
4050 | ||
4051 | static int | |
4052 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4053 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4054 | { |
4055 | if (bl->inserted | |
4056 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4057 | aspace, pc)) | |
4058 | { | |
4059 | if (overlay_debugging | |
4060 | && section_is_overlay (bl->section) | |
4061 | && !section_is_mapped (bl->section)) | |
4062 | return 0; /* unmapped overlay -- can't be a match */ | |
4063 | else | |
4064 | return 1; | |
4065 | } | |
4066 | return 0; | |
4067 | } | |
4068 | ||
a1fd2fa5 | 4069 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4070 | |
4071 | int | |
accd0bcd | 4072 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4073 | { |
f7ce857f | 4074 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4075 | |
f7ce857f | 4076 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4077 | { |
f7ce857f PA |
4078 | struct bp_location *bl = *blp; |
4079 | ||
35df4500 TJB |
4080 | if (bl->loc_type != bp_loc_software_breakpoint |
4081 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4082 | continue; |
4083 | ||
f7ce857f PA |
4084 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4085 | return 1; | |
c5aa993b | 4086 | } |
c36b740a VP |
4087 | return 0; |
4088 | } | |
4089 | ||
a1fd2fa5 PA |
4090 | /* This function returns non-zero iff there is a software breakpoint |
4091 | inserted at PC. */ | |
c36b740a VP |
4092 | |
4093 | int | |
accd0bcd | 4094 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4095 | CORE_ADDR pc) |
4fa8626c | 4096 | { |
f7ce857f | 4097 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4098 | |
f7ce857f | 4099 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4100 | { |
f7ce857f PA |
4101 | struct bp_location *bl = *blp; |
4102 | ||
35df4500 | 4103 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4104 | continue; |
4105 | ||
f7ce857f PA |
4106 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4107 | return 1; | |
4fa8626c DJ |
4108 | } |
4109 | ||
4110 | return 0; | |
9c02b525 PA |
4111 | } |
4112 | ||
4113 | /* See breakpoint.h. */ | |
4114 | ||
4115 | int | |
accd0bcd | 4116 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4117 | CORE_ADDR pc) |
4118 | { | |
4119 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4120 | |
4121 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4122 | { | |
4123 | struct bp_location *bl = *blp; | |
4124 | ||
4125 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4126 | continue; | |
4127 | ||
4128 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4129 | return 1; | |
4130 | } | |
4131 | ||
4132 | return 0; | |
4fa8626c DJ |
4133 | } |
4134 | ||
9093389c | 4135 | int |
accd0bcd | 4136 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4137 | CORE_ADDR addr, ULONGEST len) |
4138 | { | |
4139 | struct breakpoint *bpt; | |
4140 | ||
4141 | ALL_BREAKPOINTS (bpt) | |
4142 | { | |
4143 | struct bp_location *loc; | |
4144 | ||
4145 | if (bpt->type != bp_hardware_watchpoint | |
4146 | && bpt->type != bp_access_watchpoint) | |
4147 | continue; | |
4148 | ||
4149 | if (!breakpoint_enabled (bpt)) | |
4150 | continue; | |
4151 | ||
4152 | for (loc = bpt->loc; loc; loc = loc->next) | |
4153 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4154 | { | |
4155 | CORE_ADDR l, h; | |
4156 | ||
4157 | /* Check for intersection. */ | |
768adc05 PA |
4158 | l = std::max<CORE_ADDR> (loc->address, addr); |
4159 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4160 | if (l < h) |
4161 | return 1; | |
4162 | } | |
4163 | } | |
4164 | return 0; | |
4165 | } | |
c906108c | 4166 | \f |
c5aa993b | 4167 | |
c906108c SS |
4168 | /* bpstat stuff. External routines' interfaces are documented |
4169 | in breakpoint.h. */ | |
4170 | ||
4171 | int | |
c326b90e | 4172 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4173 | { |
533be4dd | 4174 | return (ep->type == bp_catchpoint); |
c906108c SS |
4175 | } |
4176 | ||
f431efe5 PA |
4177 | /* Frees any storage that is part of a bpstat. Does not walk the |
4178 | 'next' chain. */ | |
4179 | ||
04afa70c | 4180 | bpstats::~bpstats () |
198757a8 | 4181 | { |
04afa70c TT |
4182 | if (bp_location_at != NULL) |
4183 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4184 | } |
4185 | ||
c906108c SS |
4186 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4187 | Also free any storage that is part of a bpstat. */ | |
4188 | ||
4189 | void | |
fba45db2 | 4190 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4191 | { |
4192 | bpstat p; | |
4193 | bpstat q; | |
4194 | ||
4195 | if (bsp == 0) | |
4196 | return; | |
4197 | p = *bsp; | |
4198 | while (p != NULL) | |
4199 | { | |
4200 | q = p->next; | |
04afa70c | 4201 | delete p; |
c906108c SS |
4202 | p = q; |
4203 | } | |
4204 | *bsp = NULL; | |
4205 | } | |
4206 | ||
04afa70c TT |
4207 | bpstats::bpstats (const bpstats &other) |
4208 | : next (NULL), | |
4209 | bp_location_at (other.bp_location_at), | |
4210 | breakpoint_at (other.breakpoint_at), | |
4211 | commands (other.commands), | |
04afa70c TT |
4212 | print (other.print), |
4213 | stop (other.stop), | |
4214 | print_it (other.print_it) | |
4215 | { | |
850645cf TT |
4216 | if (other.old_val != NULL) |
4217 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4218 | incref_bp_location (bp_location_at); |
04afa70c TT |
4219 | } |
4220 | ||
c906108c SS |
4221 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4222 | is part of the bpstat is copied as well. */ | |
4223 | ||
4224 | bpstat | |
fba45db2 | 4225 | bpstat_copy (bpstat bs) |
c906108c SS |
4226 | { |
4227 | bpstat p = NULL; | |
4228 | bpstat tmp; | |
4229 | bpstat retval = NULL; | |
4230 | ||
4231 | if (bs == NULL) | |
4232 | return bs; | |
4233 | ||
4234 | for (; bs != NULL; bs = bs->next) | |
4235 | { | |
04afa70c | 4236 | tmp = new bpstats (*bs); |
31cc81e9 | 4237 | |
c906108c SS |
4238 | if (p == NULL) |
4239 | /* This is the first thing in the chain. */ | |
4240 | retval = tmp; | |
4241 | else | |
4242 | p->next = tmp; | |
4243 | p = tmp; | |
4244 | } | |
4245 | p->next = NULL; | |
4246 | return retval; | |
4247 | } | |
4248 | ||
4a64f543 | 4249 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4250 | |
4251 | bpstat | |
fba45db2 | 4252 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4253 | { |
c5aa993b JM |
4254 | if (bsp == NULL) |
4255 | return NULL; | |
c906108c | 4256 | |
c5aa993b JM |
4257 | for (; bsp != NULL; bsp = bsp->next) |
4258 | { | |
f431efe5 | 4259 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4260 | return bsp; |
4261 | } | |
c906108c SS |
4262 | return NULL; |
4263 | } | |
4264 | ||
ab04a2af TT |
4265 | /* See breakpoint.h. */ |
4266 | ||
47591c29 | 4267 | int |
427cd150 | 4268 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4269 | { |
ab04a2af TT |
4270 | for (; bsp != NULL; bsp = bsp->next) |
4271 | { | |
427cd150 TT |
4272 | if (bsp->breakpoint_at == NULL) |
4273 | { | |
4274 | /* A moribund location can never explain a signal other than | |
4275 | GDB_SIGNAL_TRAP. */ | |
4276 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4277 | return 1; |
427cd150 TT |
4278 | } |
4279 | else | |
47591c29 PA |
4280 | { |
4281 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4282 | sig)) | |
4283 | return 1; | |
4284 | } | |
ab04a2af TT |
4285 | } |
4286 | ||
47591c29 | 4287 | return 0; |
ab04a2af TT |
4288 | } |
4289 | ||
4a64f543 MS |
4290 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4291 | stopped at. *BSP upon return is a bpstat which points to the | |
4292 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4293 | good for anything but further calls to bpstat_num). | |
4294 | ||
8671a17b PA |
4295 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4296 | Return -1 if stopped at a breakpoint that has been deleted since | |
4297 | we set it. | |
4298 | Return 1 otherwise. */ | |
c906108c SS |
4299 | |
4300 | int | |
8671a17b | 4301 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4302 | { |
4303 | struct breakpoint *b; | |
4304 | ||
4305 | if ((*bsp) == NULL) | |
4306 | return 0; /* No more breakpoint values */ | |
8671a17b | 4307 | |
4a64f543 MS |
4308 | /* We assume we'll never have several bpstats that correspond to a |
4309 | single breakpoint -- otherwise, this function might return the | |
4310 | same number more than once and this will look ugly. */ | |
f431efe5 | 4311 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4312 | *bsp = (*bsp)->next; |
4313 | if (b == NULL) | |
4314 | return -1; /* breakpoint that's been deleted since */ | |
4315 | ||
4316 | *num = b->number; /* We have its number */ | |
4317 | return 1; | |
c906108c SS |
4318 | } |
4319 | ||
e93ca019 | 4320 | /* See breakpoint.h. */ |
c906108c SS |
4321 | |
4322 | void | |
e93ca019 | 4323 | bpstat_clear_actions (void) |
c906108c | 4324 | { |
e93ca019 JK |
4325 | bpstat bs; |
4326 | ||
00431a78 | 4327 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4328 | return; |
4329 | ||
00431a78 | 4330 | thread_info *tp = inferior_thread (); |
e93ca019 | 4331 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4332 | { |
d1b0a7bf | 4333 | bs->commands = NULL; |
850645cf | 4334 | bs->old_val.reset (nullptr); |
c906108c SS |
4335 | } |
4336 | } | |
4337 | ||
f3b1572e PA |
4338 | /* Called when a command is about to proceed the inferior. */ |
4339 | ||
4340 | static void | |
4341 | breakpoint_about_to_proceed (void) | |
4342 | { | |
d7e15655 | 4343 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4344 | { |
4345 | struct thread_info *tp = inferior_thread (); | |
4346 | ||
4347 | /* Allow inferior function calls in breakpoint commands to not | |
4348 | interrupt the command list. When the call finishes | |
4349 | successfully, the inferior will be standing at the same | |
4350 | breakpoint as if nothing happened. */ | |
16c381f0 | 4351 | if (tp->control.in_infcall) |
f3b1572e PA |
4352 | return; |
4353 | } | |
4354 | ||
4355 | breakpoint_proceeded = 1; | |
4356 | } | |
4357 | ||
abf85f46 JK |
4358 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4359 | or its equivalent. */ | |
4360 | ||
4361 | static int | |
4362 | command_line_is_silent (struct command_line *cmd) | |
4363 | { | |
4f45d445 | 4364 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4365 | } |
4366 | ||
4a64f543 MS |
4367 | /* Execute all the commands associated with all the breakpoints at |
4368 | this location. Any of these commands could cause the process to | |
4369 | proceed beyond this point, etc. We look out for such changes by | |
4370 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4371 | |
347bddb7 PA |
4372 | Returns true if a breakpoint command resumed the inferior. In that |
4373 | case, it is the caller's responsibility to recall it again with the | |
4374 | bpstat of the current thread. */ | |
4375 | ||
4376 | static int | |
4377 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4378 | { |
4379 | bpstat bs; | |
347bddb7 | 4380 | int again = 0; |
c906108c SS |
4381 | |
4382 | /* Avoid endless recursion if a `source' command is contained | |
4383 | in bs->commands. */ | |
4384 | if (executing_breakpoint_commands) | |
347bddb7 | 4385 | return 0; |
c906108c | 4386 | |
81b1e71c TT |
4387 | scoped_restore save_executing |
4388 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4389 | |
1ac32117 | 4390 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4391 | |
4a64f543 | 4392 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4393 | bs = *bsp; |
4394 | ||
4395 | breakpoint_proceeded = 0; | |
4396 | for (; bs != NULL; bs = bs->next) | |
4397 | { | |
d1b0a7bf | 4398 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4399 | |
4400 | /* Take ownership of the BSP's command tree, if it has one. | |
4401 | ||
4402 | The command tree could legitimately contain commands like | |
4403 | 'step' and 'next', which call clear_proceed_status, which | |
4404 | frees stop_bpstat's command tree. To make sure this doesn't | |
4405 | free the tree we're executing out from under us, we need to | |
4406 | take ownership of the tree ourselves. Since a given bpstat's | |
4407 | commands are only executed once, we don't need to copy it; we | |
4408 | can clear the pointer in the bpstat, and make sure we free | |
4409 | the tree when we're done. */ | |
d1b0a7bf | 4410 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4411 | bs->commands = NULL; |
d1b0a7bf TT |
4412 | if (ccmd != NULL) |
4413 | cmd = ccmd.get (); | |
abf85f46 JK |
4414 | if (command_line_is_silent (cmd)) |
4415 | { | |
4416 | /* The action has been already done by bpstat_stop_status. */ | |
4417 | cmd = cmd->next; | |
4418 | } | |
6c50ab1c | 4419 | |
c906108c SS |
4420 | while (cmd != NULL) |
4421 | { | |
4422 | execute_control_command (cmd); | |
4423 | ||
4424 | if (breakpoint_proceeded) | |
4425 | break; | |
4426 | else | |
4427 | cmd = cmd->next; | |
4428 | } | |
6c50ab1c | 4429 | |
c906108c | 4430 | if (breakpoint_proceeded) |
32c1e744 | 4431 | { |
cb814510 | 4432 | if (current_ui->async) |
347bddb7 PA |
4433 | /* If we are in async mode, then the target might be still |
4434 | running, not stopped at any breakpoint, so nothing for | |
4435 | us to do here -- just return to the event loop. */ | |
4436 | ; | |
32c1e744 VP |
4437 | else |
4438 | /* In sync mode, when execute_control_command returns | |
4439 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4440 | Breakpoint commands for that stop were not run, since |
4441 | execute_command does not run breakpoint commands -- | |
4442 | only command_line_handler does, but that one is not | |
4443 | involved in execution of breakpoint commands. So, we | |
4444 | can now execute breakpoint commands. It should be | |
4445 | noted that making execute_command do bpstat actions is | |
4446 | not an option -- in this case we'll have recursive | |
4447 | invocation of bpstat for each breakpoint with a | |
4448 | command, and can easily blow up GDB stack. Instead, we | |
4449 | return true, which will trigger the caller to recall us | |
4450 | with the new stop_bpstat. */ | |
4451 | again = 1; | |
4452 | break; | |
32c1e744 | 4453 | } |
c906108c | 4454 | } |
347bddb7 PA |
4455 | return again; |
4456 | } | |
4457 | ||
00431a78 PA |
4458 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4459 | one, is alive and has execution. Return NULL otherwise. */ | |
4460 | ||
4461 | static thread_info * | |
4462 | get_bpstat_thread () | |
4463 | { | |
4464 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4465 | return NULL; | |
4466 | ||
4467 | thread_info *tp = inferior_thread (); | |
4468 | if (tp->state == THREAD_EXITED || tp->executing) | |
4469 | return NULL; | |
4470 | return tp; | |
4471 | } | |
4472 | ||
347bddb7 PA |
4473 | void |
4474 | bpstat_do_actions (void) | |
4475 | { | |
353d1d73 | 4476 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
00431a78 | 4477 | thread_info *tp; |
353d1d73 | 4478 | |
347bddb7 | 4479 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4480 | while ((tp = get_bpstat_thread ()) != NULL) |
4481 | { | |
4482 | /* Since in sync mode, bpstat_do_actions may resume the | |
4483 | inferior, and only return when it is stopped at the next | |
4484 | breakpoint, we keep doing breakpoint actions until it returns | |
4485 | false to indicate the inferior was not resumed. */ | |
4486 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4487 | break; | |
4488 | } | |
353d1d73 JK |
4489 | |
4490 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4491 | } |
4492 | ||
fa4727a6 DJ |
4493 | /* Print out the (old or new) value associated with a watchpoint. */ |
4494 | ||
4495 | static void | |
4496 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4497 | { | |
4498 | if (val == NULL) | |
4499 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4500 | else | |
79a45b7d TT |
4501 | { |
4502 | struct value_print_options opts; | |
4503 | get_user_print_options (&opts); | |
4504 | value_print (val, stream, &opts); | |
4505 | } | |
fa4727a6 DJ |
4506 | } |
4507 | ||
f303dbd6 PA |
4508 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4509 | debugging multiple threads. */ | |
4510 | ||
4511 | void | |
4512 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4513 | { | |
112e8700 | 4514 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4515 | return; |
4516 | ||
112e8700 | 4517 | uiout->text ("\n"); |
f303dbd6 PA |
4518 | |
4519 | if (show_thread_that_caused_stop ()) | |
4520 | { | |
4521 | const char *name; | |
4522 | struct thread_info *thr = inferior_thread (); | |
4523 | ||
112e8700 SM |
4524 | uiout->text ("Thread "); |
4525 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4526 | |
4527 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4528 | if (name != NULL) | |
4529 | { | |
112e8700 SM |
4530 | uiout->text (" \""); |
4531 | uiout->field_fmt ("name", "%s", name); | |
4532 | uiout->text ("\""); | |
f303dbd6 PA |
4533 | } |
4534 | ||
112e8700 | 4535 | uiout->text (" hit "); |
f303dbd6 PA |
4536 | } |
4537 | } | |
4538 | ||
e514a9d6 | 4539 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4540 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4541 | 'print_it' in the bpstat structure. Under some circumstances we |
4542 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4543 | normal_stop(). */ |
e514a9d6 JM |
4544 | |
4545 | static enum print_stop_action | |
4546 | print_bp_stop_message (bpstat bs) | |
4547 | { | |
4548 | switch (bs->print_it) | |
4549 | { | |
4550 | case print_it_noop: | |
4a64f543 | 4551 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4552 | return PRINT_UNKNOWN; |
4553 | break; | |
4554 | ||
4555 | case print_it_done: | |
4556 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4557 | relevant messages. */ |
e514a9d6 JM |
4558 | return PRINT_SRC_AND_LOC; |
4559 | break; | |
4560 | ||
4561 | case print_it_normal: | |
4f8d1dc6 | 4562 | { |
f431efe5 PA |
4563 | struct breakpoint *b = bs->breakpoint_at; |
4564 | ||
1a6a67de TJB |
4565 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4566 | which has since been deleted. */ | |
4567 | if (b == NULL) | |
4568 | return PRINT_UNKNOWN; | |
4569 | ||
348d480f PA |
4570 | /* Normal case. Call the breakpoint's print_it method. */ |
4571 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4572 | } |
348d480f | 4573 | break; |
3086aeae | 4574 | |
e514a9d6 | 4575 | default: |
8e65ff28 | 4576 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4577 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4578 | break; |
c906108c | 4579 | } |
c906108c SS |
4580 | } |
4581 | ||
edcc5120 TT |
4582 | /* A helper function that prints a shared library stopped event. */ |
4583 | ||
4584 | static void | |
4585 | print_solib_event (int is_catchpoint) | |
4586 | { | |
6fb16ce6 | 4587 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4588 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4589 | |
4590 | if (!is_catchpoint) | |
4591 | { | |
4592 | if (any_added || any_deleted) | |
112e8700 | 4593 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4594 | else |
112e8700 SM |
4595 | current_uiout->text (_("Stopped due to shared library event (no " |
4596 | "libraries added or removed)\n")); | |
edcc5120 TT |
4597 | } |
4598 | ||
112e8700 SM |
4599 | if (current_uiout->is_mi_like_p ()) |
4600 | current_uiout->field_string ("reason", | |
4601 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4602 | |
4603 | if (any_deleted) | |
4604 | { | |
112e8700 | 4605 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4606 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4607 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4608 | { |
6fb16ce6 SM |
4609 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4610 | ||
edcc5120 | 4611 | if (ix > 0) |
112e8700 SM |
4612 | current_uiout->text (" "); |
4613 | current_uiout->field_string ("library", name); | |
4614 | current_uiout->text ("\n"); | |
edcc5120 | 4615 | } |
edcc5120 TT |
4616 | } |
4617 | ||
4618 | if (any_added) | |
4619 | { | |
112e8700 | 4620 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4621 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4622 | bool first = true; |
52941706 | 4623 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4624 | { |
bcb430e4 | 4625 | if (!first) |
112e8700 | 4626 | current_uiout->text (" "); |
bcb430e4 | 4627 | first = false; |
112e8700 SM |
4628 | current_uiout->field_string ("library", iter->so_name); |
4629 | current_uiout->text ("\n"); | |
edcc5120 | 4630 | } |
edcc5120 TT |
4631 | } |
4632 | } | |
4633 | ||
e514a9d6 JM |
4634 | /* Print a message indicating what happened. This is called from |
4635 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4636 | list - a list of the eventpoints that caused this stop. KIND is |
4637 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4638 | routine calls the generic print routine for printing a message |
4639 | about reasons for stopping. This will print (for example) the | |
4640 | "Breakpoint n," part of the output. The return value of this | |
4641 | routine is one of: | |
c906108c | 4642 | |
4a64f543 | 4643 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4644 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4645 | code to print the location. An example is |
c5aa993b JM |
4646 | "Breakpoint 1, " which should be followed by |
4647 | the location. | |
917317f4 | 4648 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4649 | to also print the location part of the message. |
4650 | An example is the catch/throw messages, which | |
4a64f543 | 4651 | don't require a location appended to the end. |
917317f4 | 4652 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4653 | further info to be printed. */ |
c906108c | 4654 | |
917317f4 | 4655 | enum print_stop_action |
36dfb11c | 4656 | bpstat_print (bpstat bs, int kind) |
c906108c | 4657 | { |
f486487f | 4658 | enum print_stop_action val; |
c5aa993b | 4659 | |
c906108c | 4660 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4661 | (Currently all watchpoints go on the bpstat whether hit or not. |
4662 | That probably could (should) be changed, provided care is taken | |
c906108c | 4663 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4664 | for (; bs; bs = bs->next) |
4665 | { | |
4666 | val = print_bp_stop_message (bs); | |
4667 | if (val == PRINT_SRC_ONLY | |
4668 | || val == PRINT_SRC_AND_LOC | |
4669 | || val == PRINT_NOTHING) | |
4670 | return val; | |
4671 | } | |
c906108c | 4672 | |
36dfb11c TT |
4673 | /* If we had hit a shared library event breakpoint, |
4674 | print_bp_stop_message would print out this message. If we hit an | |
4675 | OS-level shared library event, do the same thing. */ | |
4676 | if (kind == TARGET_WAITKIND_LOADED) | |
4677 | { | |
edcc5120 | 4678 | print_solib_event (0); |
36dfb11c TT |
4679 | return PRINT_NOTHING; |
4680 | } | |
4681 | ||
e514a9d6 | 4682 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4683 | with and nothing was printed. */ |
917317f4 | 4684 | return PRINT_UNKNOWN; |
c906108c SS |
4685 | } |
4686 | ||
bf469271 | 4687 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4688 | |
bf469271 PA |
4689 | static bool |
4690 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4691 | { |
278cd55f | 4692 | struct value *mark = value_mark (); |
bf469271 | 4693 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4694 | |
c906108c | 4695 | value_free_to_mark (mark); |
bf469271 | 4696 | return res; |
c906108c SS |
4697 | } |
4698 | ||
5760d0ab | 4699 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4700 | |
04afa70c TT |
4701 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4702 | : next (NULL), | |
4703 | bp_location_at (bl), | |
4704 | breakpoint_at (bl->owner), | |
4705 | commands (NULL), | |
04afa70c TT |
4706 | print (0), |
4707 | stop (0), | |
4708 | print_it (print_it_normal) | |
c906108c | 4709 | { |
f431efe5 | 4710 | incref_bp_location (bl); |
04afa70c TT |
4711 | **bs_link_pointer = this; |
4712 | *bs_link_pointer = &next; | |
4713 | } | |
4714 | ||
4715 | bpstats::bpstats () | |
4716 | : next (NULL), | |
4717 | bp_location_at (NULL), | |
4718 | breakpoint_at (NULL), | |
4719 | commands (NULL), | |
04afa70c TT |
4720 | print (0), |
4721 | stop (0), | |
4722 | print_it (print_it_normal) | |
4723 | { | |
c906108c SS |
4724 | } |
4725 | \f | |
d983da9c DJ |
4726 | /* The target has stopped with waitstatus WS. Check if any hardware |
4727 | watchpoints have triggered, according to the target. */ | |
4728 | ||
4729 | int | |
4730 | watchpoints_triggered (struct target_waitstatus *ws) | |
4731 | { | |
57810aa7 | 4732 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4733 | CORE_ADDR addr; |
4734 | struct breakpoint *b; | |
4735 | ||
4736 | if (!stopped_by_watchpoint) | |
4737 | { | |
4738 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4739 | as not triggered. */ | |
4740 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4741 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4742 | { |
4743 | struct watchpoint *w = (struct watchpoint *) b; | |
4744 | ||
4745 | w->watchpoint_triggered = watch_triggered_no; | |
4746 | } | |
d983da9c DJ |
4747 | |
4748 | return 0; | |
4749 | } | |
4750 | ||
8b88a78e | 4751 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4752 | { |
4753 | /* We were stopped by a watchpoint, but we don't know where. | |
4754 | Mark all watchpoints as unknown. */ | |
4755 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4756 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4757 | { |
4758 | struct watchpoint *w = (struct watchpoint *) b; | |
4759 | ||
4760 | w->watchpoint_triggered = watch_triggered_unknown; | |
4761 | } | |
d983da9c | 4762 | |
3c4797ba | 4763 | return 1; |
d983da9c DJ |
4764 | } |
4765 | ||
4766 | /* The target could report the data address. Mark watchpoints | |
4767 | affected by this data address as triggered, and all others as not | |
4768 | triggered. */ | |
4769 | ||
4770 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4771 | if (is_hardware_watchpoint (b)) |
d983da9c | 4772 | { |
3a5c3e22 | 4773 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4774 | struct bp_location *loc; |
d983da9c | 4775 | |
3a5c3e22 | 4776 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4777 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4778 | { |
3a5c3e22 | 4779 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4780 | { |
3a5c3e22 PA |
4781 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4782 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4783 | |
4784 | if (newaddr == start) | |
4785 | { | |
3a5c3e22 | 4786 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4787 | break; |
4788 | } | |
4789 | } | |
4790 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4791 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4792 | addr, loc->address, |
4793 | loc->length)) | |
4794 | { | |
3a5c3e22 | 4795 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4796 | break; |
4797 | } | |
4798 | } | |
d983da9c DJ |
4799 | } |
4800 | ||
4801 | return 1; | |
4802 | } | |
4803 | ||
bf469271 PA |
4804 | /* Possible return values for watchpoint_check. */ |
4805 | enum wp_check_result | |
4806 | { | |
4807 | /* The watchpoint has been deleted. */ | |
4808 | WP_DELETED = 1, | |
4809 | ||
4810 | /* The value has changed. */ | |
4811 | WP_VALUE_CHANGED = 2, | |
4812 | ||
4813 | /* The value has not changed. */ | |
4814 | WP_VALUE_NOT_CHANGED = 3, | |
4815 | ||
4816 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4817 | WP_IGNORE = 4, | |
4818 | }; | |
c906108c SS |
4819 | |
4820 | #define BP_TEMPFLAG 1 | |
4821 | #define BP_HARDWAREFLAG 2 | |
4822 | ||
4a64f543 | 4823 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4824 | changed. */ |
553e4c11 | 4825 | |
bf469271 PA |
4826 | static wp_check_result |
4827 | watchpoint_check (bpstat bs) | |
c906108c | 4828 | { |
3a5c3e22 | 4829 | struct watchpoint *b; |
c906108c SS |
4830 | struct frame_info *fr; |
4831 | int within_current_scope; | |
4832 | ||
f431efe5 | 4833 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4834 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4835 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4836 | |
f6bc2008 PA |
4837 | /* If this is a local watchpoint, we only want to check if the |
4838 | watchpoint frame is in scope if the current thread is the thread | |
4839 | that was used to create the watchpoint. */ | |
4840 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4841 | return WP_IGNORE; |
f6bc2008 | 4842 | |
c906108c SS |
4843 | if (b->exp_valid_block == NULL) |
4844 | within_current_scope = 1; | |
4845 | else | |
4846 | { | |
edb3359d DJ |
4847 | struct frame_info *frame = get_current_frame (); |
4848 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4849 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4850 | ||
c9cf6e20 | 4851 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4852 | still in the function but the stack frame has already been |
4853 | invalidated. Since we can't rely on the values of local | |
4854 | variables after the stack has been destroyed, we are treating | |
4855 | the watchpoint in that state as `not changed' without further | |
4856 | checking. Don't mark watchpoints as changed if the current | |
4857 | frame is in an epilogue - even if they are in some other | |
4858 | frame, our view of the stack is likely to be wrong and | |
4859 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4860 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4861 | return WP_IGNORE; |
a0f49112 | 4862 | |
101dcfbe | 4863 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4864 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4865 | |
4866 | /* If we've gotten confused in the unwinder, we might have | |
4867 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4868 | if (within_current_scope) |
4869 | { | |
4870 | struct symbol *function; | |
4871 | ||
4872 | function = get_frame_function (fr); | |
4873 | if (function == NULL | |
4874 | || !contained_in (b->exp_valid_block, | |
4875 | SYMBOL_BLOCK_VALUE (function))) | |
4876 | within_current_scope = 0; | |
4877 | } | |
69fbadd5 | 4878 | |
edb3359d | 4879 | if (within_current_scope) |
c906108c SS |
4880 | /* If we end up stopping, the current frame will get selected |
4881 | in normal_stop. So this call to select_frame won't affect | |
4882 | the user. */ | |
0f7d239c | 4883 | select_frame (fr); |
c906108c | 4884 | } |
c5aa993b | 4885 | |
c906108c SS |
4886 | if (within_current_scope) |
4887 | { | |
4a64f543 MS |
4888 | /* We use value_{,free_to_}mark because it could be a *long* |
4889 | time before we return to the command level and call | |
4890 | free_all_values. We can't call free_all_values because we | |
4891 | might be in the middle of evaluating a function call. */ | |
c906108c | 4892 | |
0cf6dd15 | 4893 | int pc = 0; |
9c06b0b4 | 4894 | struct value *mark; |
fa4727a6 DJ |
4895 | struct value *new_val; |
4896 | ||
c1fc2657 | 4897 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4898 | /* Since we don't know the exact trigger address (from |
4899 | stopped_data_address), just tell the user we've triggered | |
4900 | a mask watchpoint. */ | |
4901 | return WP_VALUE_CHANGED; | |
4902 | ||
4903 | mark = value_mark (); | |
4d01a485 | 4904 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4905 | |
bb9d5f81 PP |
4906 | if (b->val_bitsize != 0) |
4907 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4908 | ||
4a64f543 MS |
4909 | /* We use value_equal_contents instead of value_equal because |
4910 | the latter coerces an array to a pointer, thus comparing just | |
4911 | the address of the array instead of its contents. This is | |
4912 | not what we want. */ | |
fa4727a6 | 4913 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4914 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4915 | new_val))) | |
c906108c | 4916 | { |
c906108c | 4917 | bs->old_val = b->val; |
850645cf | 4918 | b->val = release_value (new_val); |
fa4727a6 | 4919 | b->val_valid = 1; |
850645cf TT |
4920 | if (new_val != NULL) |
4921 | value_free_to_mark (mark); | |
c906108c SS |
4922 | return WP_VALUE_CHANGED; |
4923 | } | |
4924 | else | |
4925 | { | |
60e1c644 | 4926 | /* Nothing changed. */ |
c906108c | 4927 | value_free_to_mark (mark); |
c906108c SS |
4928 | return WP_VALUE_NOT_CHANGED; |
4929 | } | |
4930 | } | |
4931 | else | |
4932 | { | |
4933 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4934 | if we temporarily ignored the watchpoint, then when |
4935 | we reenter the block in which it is valid it contains | |
4936 | garbage (in the case of a function, it may have two | |
4937 | garbage values, one before and one after the prologue). | |
4938 | So we can't even detect the first assignment to it and | |
4939 | watch after that (since the garbage may or may not equal | |
4940 | the first value assigned). */ | |
348d480f PA |
4941 | /* We print all the stop information in |
4942 | breakpoint_ops->print_it, but in this case, by the time we | |
4943 | call breakpoint_ops->print_it this bp will be deleted | |
4944 | already. So we have no choice but print the information | |
4945 | here. */ | |
468afe6c | 4946 | |
0e454242 | 4947 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4948 | { |
4949 | struct ui_out *uiout = current_uiout; | |
4950 | ||
112e8700 SM |
4951 | if (uiout->is_mi_like_p ()) |
4952 | uiout->field_string | |
4953 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4954 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4955 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4956 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4957 | "which its expression is valid.\n"); |
4958 | } | |
4ce44c66 | 4959 | |
cdac0397 | 4960 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4961 | b->commands = NULL; |
d0fb5eae | 4962 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4963 | |
4964 | return WP_DELETED; | |
4965 | } | |
4966 | } | |
4967 | ||
18a18393 | 4968 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4969 | breakpoint location BL. This function does not check if we should |
4970 | stop, only if BL explains the stop. */ | |
4971 | ||
18a18393 | 4972 | static int |
6c95b8df | 4973 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4974 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4975 | const struct target_waitstatus *ws) |
18a18393 VP |
4976 | { |
4977 | struct breakpoint *b = bl->owner; | |
4978 | ||
348d480f | 4979 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4980 | gdb_assert (b != NULL); |
4981 | ||
bd522513 | 4982 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4983 | } |
4984 | ||
3a5c3e22 PA |
4985 | /* Determine if the watched values have actually changed, and we |
4986 | should stop. If not, set BS->stop to 0. */ | |
4987 | ||
18a18393 VP |
4988 | static void |
4989 | bpstat_check_watchpoint (bpstat bs) | |
4990 | { | |
2bdf28a0 | 4991 | const struct bp_location *bl; |
3a5c3e22 | 4992 | struct watchpoint *b; |
2bdf28a0 JK |
4993 | |
4994 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4995 | bl = bs->bp_location_at; |
2bdf28a0 | 4996 | gdb_assert (bl != NULL); |
3a5c3e22 | 4997 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4998 | gdb_assert (b != NULL); |
18a18393 | 4999 | |
18a18393 | 5000 | { |
18a18393 VP |
5001 | int must_check_value = 0; |
5002 | ||
c1fc2657 | 5003 | if (b->type == bp_watchpoint) |
18a18393 VP |
5004 | /* For a software watchpoint, we must always check the |
5005 | watched value. */ | |
5006 | must_check_value = 1; | |
5007 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5008 | /* We have a hardware watchpoint (read, write, or access) | |
5009 | and the target earlier reported an address watched by | |
5010 | this watchpoint. */ | |
5011 | must_check_value = 1; | |
5012 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5013 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5014 | /* We were stopped by a hardware watchpoint, but the target could |
5015 | not report the data address. We must check the watchpoint's | |
5016 | value. Access and read watchpoints are out of luck; without | |
5017 | a data address, we can't figure it out. */ | |
5018 | must_check_value = 1; | |
3a5c3e22 | 5019 | |
18a18393 VP |
5020 | if (must_check_value) |
5021 | { | |
bf469271 PA |
5022 | wp_check_result e; |
5023 | ||
5024 | TRY | |
5025 | { | |
5026 | e = watchpoint_check (bs); | |
5027 | } | |
5028 | CATCH (ex, RETURN_MASK_ALL) | |
5029 | { | |
5030 | exception_fprintf (gdb_stderr, ex, | |
5031 | "Error evaluating expression " | |
5032 | "for watchpoint %d\n", | |
5033 | b->number); | |
5034 | ||
5035 | SWITCH_THRU_ALL_UIS () | |
5036 | { | |
5037 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5038 | b->number); | |
5039 | } | |
5040 | watchpoint_del_at_next_stop (b); | |
5041 | e = WP_DELETED; | |
5042 | } | |
5043 | END_CATCH | |
5044 | ||
18a18393 VP |
5045 | switch (e) |
5046 | { | |
5047 | case WP_DELETED: | |
5048 | /* We've already printed what needs to be printed. */ | |
5049 | bs->print_it = print_it_done; | |
5050 | /* Stop. */ | |
5051 | break; | |
60e1c644 PA |
5052 | case WP_IGNORE: |
5053 | bs->print_it = print_it_noop; | |
5054 | bs->stop = 0; | |
5055 | break; | |
18a18393 | 5056 | case WP_VALUE_CHANGED: |
c1fc2657 | 5057 | if (b->type == bp_read_watchpoint) |
18a18393 | 5058 | { |
85d721b8 PA |
5059 | /* There are two cases to consider here: |
5060 | ||
4a64f543 | 5061 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5062 | In that case, trust the target, and always report |
5063 | the watchpoint hit to the user. Even though | |
5064 | reads don't cause value changes, the value may | |
5065 | have changed since the last time it was read, and | |
5066 | since we're not trapping writes, we will not see | |
5067 | those, and as such we should ignore our notion of | |
5068 | old value. | |
5069 | ||
4a64f543 | 5070 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5071 | reads and writes. There are two ways this may |
5072 | happen: | |
5073 | ||
4a64f543 | 5074 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5075 | reads only, but can break on accesses (reads or |
5076 | writes), such as e.g., x86. We detect this case | |
5077 | at the time we try to insert read watchpoints. | |
5078 | ||
4a64f543 | 5079 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5080 | watchpoints, but, the user set an access or write |
5081 | watchpoint watching the same memory as this read | |
5082 | watchpoint. | |
5083 | ||
5084 | If we're watching memory writes as well as reads, | |
5085 | ignore watchpoint hits when we find that the | |
5086 | value hasn't changed, as reads don't cause | |
5087 | changes. This still gives false positives when | |
5088 | the program writes the same value to memory as | |
5089 | what there was already in memory (we will confuse | |
5090 | it for a read), but it's much better than | |
5091 | nothing. */ | |
5092 | ||
5093 | int other_write_watchpoint = 0; | |
5094 | ||
5095 | if (bl->watchpoint_type == hw_read) | |
5096 | { | |
5097 | struct breakpoint *other_b; | |
5098 | ||
5099 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5100 | if (other_b->type == bp_hardware_watchpoint |
5101 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5102 | { |
3a5c3e22 PA |
5103 | struct watchpoint *other_w = |
5104 | (struct watchpoint *) other_b; | |
5105 | ||
5106 | if (other_w->watchpoint_triggered | |
5107 | == watch_triggered_yes) | |
5108 | { | |
5109 | other_write_watchpoint = 1; | |
5110 | break; | |
5111 | } | |
85d721b8 PA |
5112 | } |
5113 | } | |
5114 | ||
5115 | if (other_write_watchpoint | |
5116 | || bl->watchpoint_type == hw_access) | |
5117 | { | |
5118 | /* We're watching the same memory for writes, | |
5119 | and the value changed since the last time we | |
5120 | updated it, so this trap must be for a write. | |
5121 | Ignore it. */ | |
5122 | bs->print_it = print_it_noop; | |
5123 | bs->stop = 0; | |
5124 | } | |
18a18393 VP |
5125 | } |
5126 | break; | |
5127 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5128 | if (b->type == bp_hardware_watchpoint |
5129 | || b->type == bp_watchpoint) | |
18a18393 VP |
5130 | { |
5131 | /* Don't stop: write watchpoints shouldn't fire if | |
5132 | the value hasn't changed. */ | |
5133 | bs->print_it = print_it_noop; | |
5134 | bs->stop = 0; | |
5135 | } | |
5136 | /* Stop. */ | |
5137 | break; | |
5138 | default: | |
5139 | /* Can't happen. */ | |
18a18393 VP |
5140 | break; |
5141 | } | |
5142 | } | |
5143 | else /* must_check_value == 0 */ | |
5144 | { | |
5145 | /* This is a case where some watchpoint(s) triggered, but | |
5146 | not at the address of this watchpoint, or else no | |
5147 | watchpoint triggered after all. So don't print | |
5148 | anything for this watchpoint. */ | |
5149 | bs->print_it = print_it_noop; | |
5150 | bs->stop = 0; | |
5151 | } | |
5152 | } | |
5153 | } | |
5154 | ||
7d4df6a4 DE |
5155 | /* For breakpoints that are currently marked as telling gdb to stop, |
5156 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5157 | of breakpoint referred to by BS. If we should not stop for this |
5158 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5159 | |
18a18393 | 5160 | static void |
00431a78 | 5161 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5162 | { |
2bdf28a0 JK |
5163 | const struct bp_location *bl; |
5164 | struct breakpoint *b; | |
bf469271 PA |
5165 | /* Assume stop. */ |
5166 | bool condition_result = true; | |
7d4df6a4 DE |
5167 | struct expression *cond; |
5168 | ||
5169 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5170 | |
5171 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5172 | bl = bs->bp_location_at; |
2bdf28a0 | 5173 | gdb_assert (bl != NULL); |
f431efe5 | 5174 | b = bs->breakpoint_at; |
2bdf28a0 | 5175 | gdb_assert (b != NULL); |
18a18393 | 5176 | |
b775012e LM |
5177 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5178 | need to do so again since GDB does not know if we stopped due to a | |
5179 | breakpoint or a single step breakpoint. */ | |
5180 | ||
18a18393 | 5181 | if (frame_id_p (b->frame_id) |
edb3359d | 5182 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5183 | { |
7d4df6a4 DE |
5184 | bs->stop = 0; |
5185 | return; | |
5186 | } | |
60e1c644 | 5187 | |
12ab52e9 PA |
5188 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5189 | evaluating the condition if this isn't the specified | |
5190 | thread/task. */ | |
00431a78 PA |
5191 | if ((b->thread != -1 && b->thread != thread->global_num) |
5192 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5193 | { |
5194 | bs->stop = 0; | |
5195 | return; | |
5196 | } | |
5197 | ||
6dddc817 DE |
5198 | /* Evaluate extension language breakpoints that have a "stop" method |
5199 | implemented. */ | |
5200 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5201 | |
7d4df6a4 DE |
5202 | if (is_watchpoint (b)) |
5203 | { | |
5204 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5205 | |
4d01a485 | 5206 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5207 | } |
5208 | else | |
4d01a485 | 5209 | cond = bl->cond.get (); |
60e1c644 | 5210 | |
7d4df6a4 DE |
5211 | if (cond && b->disposition != disp_del_at_next_stop) |
5212 | { | |
5213 | int within_current_scope = 1; | |
5214 | struct watchpoint * w; | |
60e1c644 | 5215 | |
7d4df6a4 DE |
5216 | /* We use value_mark and value_free_to_mark because it could |
5217 | be a long time before we return to the command level and | |
5218 | call free_all_values. We can't call free_all_values | |
5219 | because we might be in the middle of evaluating a | |
5220 | function call. */ | |
5221 | struct value *mark = value_mark (); | |
5222 | ||
5223 | if (is_watchpoint (b)) | |
5224 | w = (struct watchpoint *) b; | |
5225 | else | |
5226 | w = NULL; | |
5227 | ||
5228 | /* Need to select the frame, with all that implies so that | |
5229 | the conditions will have the right context. Because we | |
5230 | use the frame, we will not see an inlined function's | |
5231 | variables when we arrive at a breakpoint at the start | |
5232 | of the inlined function; the current frame will be the | |
5233 | call site. */ | |
5234 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5235 | select_frame (get_current_frame ()); | |
5236 | else | |
18a18393 | 5237 | { |
7d4df6a4 DE |
5238 | struct frame_info *frame; |
5239 | ||
5240 | /* For local watchpoint expressions, which particular | |
5241 | instance of a local is being watched matters, so we | |
5242 | keep track of the frame to evaluate the expression | |
5243 | in. To evaluate the condition however, it doesn't | |
5244 | really matter which instantiation of the function | |
5245 | where the condition makes sense triggers the | |
5246 | watchpoint. This allows an expression like "watch | |
5247 | global if q > 10" set in `func', catch writes to | |
5248 | global on all threads that call `func', or catch | |
5249 | writes on all recursive calls of `func' by a single | |
5250 | thread. We simply always evaluate the condition in | |
5251 | the innermost frame that's executing where it makes | |
5252 | sense to evaluate the condition. It seems | |
5253 | intuitive. */ | |
5254 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5255 | if (frame != NULL) | |
5256 | select_frame (frame); | |
5257 | else | |
5258 | within_current_scope = 0; | |
18a18393 | 5259 | } |
7d4df6a4 | 5260 | if (within_current_scope) |
bf469271 PA |
5261 | { |
5262 | TRY | |
5263 | { | |
5264 | condition_result = breakpoint_cond_eval (cond); | |
5265 | } | |
5266 | CATCH (ex, RETURN_MASK_ALL) | |
5267 | { | |
5268 | exception_fprintf (gdb_stderr, ex, | |
5269 | "Error in testing breakpoint condition:\n"); | |
5270 | } | |
5271 | END_CATCH | |
5272 | } | |
7d4df6a4 | 5273 | else |
18a18393 | 5274 | { |
7d4df6a4 DE |
5275 | warning (_("Watchpoint condition cannot be tested " |
5276 | "in the current scope")); | |
5277 | /* If we failed to set the right context for this | |
5278 | watchpoint, unconditionally report it. */ | |
18a18393 | 5279 | } |
7d4df6a4 DE |
5280 | /* FIXME-someday, should give breakpoint #. */ |
5281 | value_free_to_mark (mark); | |
18a18393 | 5282 | } |
7d4df6a4 | 5283 | |
bf469271 | 5284 | if (cond && !condition_result) |
7d4df6a4 DE |
5285 | { |
5286 | bs->stop = 0; | |
5287 | } | |
7d4df6a4 DE |
5288 | else if (b->ignore_count > 0) |
5289 | { | |
5290 | b->ignore_count--; | |
5291 | bs->stop = 0; | |
5292 | /* Increase the hit count even though we don't stop. */ | |
5293 | ++(b->hit_count); | |
76727919 | 5294 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5295 | } |
18a18393 VP |
5296 | } |
5297 | ||
1cf4d951 PA |
5298 | /* Returns true if we need to track moribund locations of LOC's type |
5299 | on the current target. */ | |
5300 | ||
5301 | static int | |
5302 | need_moribund_for_location_type (struct bp_location *loc) | |
5303 | { | |
5304 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5305 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5306 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5307 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5308 | } | |
5309 | ||
ddfe970e | 5310 | /* See breakpoint.h. */ |
c906108c SS |
5311 | |
5312 | bpstat | |
ddfe970e | 5313 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5314 | const struct target_waitstatus *ws) |
c906108c | 5315 | { |
ddfe970e | 5316 | struct breakpoint *b; |
5760d0ab | 5317 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5318 | |
429374b8 JK |
5319 | ALL_BREAKPOINTS (b) |
5320 | { | |
1a853c52 | 5321 | if (!breakpoint_enabled (b)) |
429374b8 | 5322 | continue; |
a5606eee | 5323 | |
ddfe970e | 5324 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5325 | { |
4a64f543 MS |
5326 | /* For hardware watchpoints, we look only at the first |
5327 | location. The watchpoint_check function will work on the | |
5328 | entire expression, not the individual locations. For | |
5329 | read watchpoints, the watchpoints_triggered function has | |
5330 | checked all locations already. */ | |
429374b8 JK |
5331 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5332 | break; | |
18a18393 | 5333 | |
f6592439 | 5334 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5335 | continue; |
c5aa993b | 5336 | |
09ac7c10 | 5337 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5338 | continue; |
c5aa993b | 5339 | |
4a64f543 MS |
5340 | /* Come here if it's a watchpoint, or if the break address |
5341 | matches. */ | |
c5aa993b | 5342 | |
ddfe970e KS |
5343 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5344 | explain stop. */ | |
c5aa993b | 5345 | |
f431efe5 PA |
5346 | /* Assume we stop. Should we find a watchpoint that is not |
5347 | actually triggered, or if the condition of the breakpoint | |
5348 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5349 | bs->stop = 1; |
5350 | bs->print = 1; | |
d983da9c | 5351 | |
f431efe5 PA |
5352 | /* If this is a scope breakpoint, mark the associated |
5353 | watchpoint as triggered so that we will handle the | |
5354 | out-of-scope event. We'll get to the watchpoint next | |
5355 | iteration. */ | |
d0fb5eae | 5356 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5357 | { |
5358 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5359 | ||
5360 | w->watchpoint_triggered = watch_triggered_yes; | |
5361 | } | |
f431efe5 PA |
5362 | } |
5363 | } | |
5364 | ||
7c16b83e | 5365 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5366 | if (!target_supports_stopped_by_sw_breakpoint () |
5367 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5368 | { |
1123588c | 5369 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5370 | { |
1cf4d951 PA |
5371 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5372 | && need_moribund_for_location_type (loc)) | |
5373 | { | |
ddfe970e | 5374 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5375 | /* For hits of moribund locations, we should just proceed. */ |
5376 | bs->stop = 0; | |
5377 | bs->print = 0; | |
5378 | bs->print_it = print_it_noop; | |
5379 | } | |
f431efe5 PA |
5380 | } |
5381 | } | |
5382 | ||
ddfe970e KS |
5383 | return bs_head; |
5384 | } | |
5385 | ||
5386 | /* See breakpoint.h. */ | |
5387 | ||
5388 | bpstat | |
5389 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5390 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5391 | const struct target_waitstatus *ws, |
5392 | bpstat stop_chain) | |
5393 | { | |
5394 | struct breakpoint *b = NULL; | |
5395 | /* First item of allocated bpstat's. */ | |
5396 | bpstat bs_head = stop_chain; | |
5397 | bpstat bs; | |
5398 | int need_remove_insert; | |
5399 | int removed_any; | |
5400 | ||
5401 | /* First, build the bpstat chain with locations that explain a | |
5402 | target stop, while being careful to not set the target running, | |
5403 | as that may invalidate locations (in particular watchpoint | |
5404 | locations are recreated). Resuming will happen here with | |
5405 | breakpoint conditions or watchpoint expressions that include | |
5406 | inferior function calls. */ | |
5407 | if (bs_head == NULL) | |
5408 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5409 | ||
edcc5120 TT |
5410 | /* A bit of special processing for shlib breakpoints. We need to |
5411 | process solib loading here, so that the lists of loaded and | |
5412 | unloaded libraries are correct before we handle "catch load" and | |
5413 | "catch unload". */ | |
5414 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5415 | { | |
5d268276 | 5416 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5417 | { |
5418 | handle_solib_event (); | |
5419 | break; | |
5420 | } | |
5421 | } | |
5422 | ||
f431efe5 PA |
5423 | /* Now go through the locations that caused the target to stop, and |
5424 | check whether we're interested in reporting this stop to higher | |
5425 | layers, or whether we should resume the target transparently. */ | |
5426 | ||
5427 | removed_any = 0; | |
5428 | ||
5760d0ab | 5429 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5430 | { |
5431 | if (!bs->stop) | |
5432 | continue; | |
5433 | ||
f431efe5 | 5434 | b = bs->breakpoint_at; |
348d480f PA |
5435 | b->ops->check_status (bs); |
5436 | if (bs->stop) | |
28010a5d | 5437 | { |
00431a78 | 5438 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5439 | |
429374b8 JK |
5440 | if (bs->stop) |
5441 | { | |
5442 | ++(b->hit_count); | |
76727919 | 5443 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5444 | |
4a64f543 | 5445 | /* We will stop here. */ |
429374b8 JK |
5446 | if (b->disposition == disp_disable) |
5447 | { | |
816338b5 | 5448 | --(b->enable_count); |
1a853c52 | 5449 | if (b->enable_count <= 0) |
429374b8 | 5450 | b->enable_state = bp_disabled; |
f431efe5 | 5451 | removed_any = 1; |
429374b8 JK |
5452 | } |
5453 | if (b->silent) | |
5454 | bs->print = 0; | |
5455 | bs->commands = b->commands; | |
abf85f46 | 5456 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5457 | ? bs->commands.get () : NULL)) |
abf85f46 | 5458 | bs->print = 0; |
9d6e6e84 HZ |
5459 | |
5460 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5461 | } |
5462 | ||
348d480f | 5463 | } |
a9b3a50f PA |
5464 | |
5465 | /* Print nothing for this entry if we don't stop or don't | |
5466 | print. */ | |
5467 | if (!bs->stop || !bs->print) | |
5468 | bs->print_it = print_it_noop; | |
429374b8 | 5469 | } |
876fa593 | 5470 | |
d983da9c DJ |
5471 | /* If we aren't stopping, the value of some hardware watchpoint may |
5472 | not have changed, but the intermediate memory locations we are | |
5473 | watching may have. Don't bother if we're stopping; this will get | |
5474 | done later. */ | |
d832cb68 | 5475 | need_remove_insert = 0; |
5760d0ab JK |
5476 | if (! bpstat_causes_stop (bs_head)) |
5477 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5478 | if (!bs->stop |
f431efe5 PA |
5479 | && bs->breakpoint_at |
5480 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5481 | { |
3a5c3e22 PA |
5482 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5483 | ||
5484 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5485 | need_remove_insert = 1; |
d983da9c DJ |
5486 | } |
5487 | ||
d832cb68 | 5488 | if (need_remove_insert) |
44702360 | 5489 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5490 | else if (removed_any) |
44702360 | 5491 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5492 | |
5760d0ab | 5493 | return bs_head; |
c906108c | 5494 | } |
628fe4e4 JK |
5495 | |
5496 | static void | |
5497 | handle_jit_event (void) | |
5498 | { | |
5499 | struct frame_info *frame; | |
5500 | struct gdbarch *gdbarch; | |
5501 | ||
243a9253 PA |
5502 | if (debug_infrun) |
5503 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5504 | ||
628fe4e4 JK |
5505 | /* Switch terminal for any messages produced by |
5506 | breakpoint_re_set. */ | |
223ffa71 | 5507 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5508 | |
5509 | frame = get_current_frame (); | |
5510 | gdbarch = get_frame_arch (frame); | |
5511 | ||
5512 | jit_event_handler (gdbarch); | |
5513 | ||
223ffa71 | 5514 | target_terminal::inferior (); |
628fe4e4 JK |
5515 | } |
5516 | ||
5517 | /* Prepare WHAT final decision for infrun. */ | |
5518 | ||
5519 | /* Decide what infrun needs to do with this bpstat. */ | |
5520 | ||
c906108c | 5521 | struct bpstat_what |
0e30163f | 5522 | bpstat_what (bpstat bs_head) |
c906108c | 5523 | { |
c906108c | 5524 | struct bpstat_what retval; |
0e30163f | 5525 | bpstat bs; |
c906108c | 5526 | |
628fe4e4 | 5527 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5528 | retval.call_dummy = STOP_NONE; |
186c406b | 5529 | retval.is_longjmp = 0; |
628fe4e4 | 5530 | |
0e30163f | 5531 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5532 | { |
628fe4e4 JK |
5533 | /* Extract this BS's action. After processing each BS, we check |
5534 | if its action overrides all we've seem so far. */ | |
5535 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5536 | enum bptype bptype; | |
5537 | ||
c906108c | 5538 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5539 | { |
5540 | /* I suspect this can happen if it was a momentary | |
5541 | breakpoint which has since been deleted. */ | |
5542 | bptype = bp_none; | |
5543 | } | |
20874c92 | 5544 | else |
f431efe5 | 5545 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5546 | |
5547 | switch (bptype) | |
c906108c SS |
5548 | { |
5549 | case bp_none: | |
628fe4e4 | 5550 | break; |
c906108c SS |
5551 | case bp_breakpoint: |
5552 | case bp_hardware_breakpoint: | |
7c16b83e | 5553 | case bp_single_step: |
c906108c SS |
5554 | case bp_until: |
5555 | case bp_finish: | |
a9b3a50f | 5556 | case bp_shlib_event: |
c906108c SS |
5557 | if (bs->stop) |
5558 | { | |
5559 | if (bs->print) | |
628fe4e4 | 5560 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5561 | else |
628fe4e4 | 5562 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5563 | } |
5564 | else | |
628fe4e4 | 5565 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5566 | break; |
5567 | case bp_watchpoint: | |
5568 | case bp_hardware_watchpoint: | |
5569 | case bp_read_watchpoint: | |
5570 | case bp_access_watchpoint: | |
5571 | if (bs->stop) | |
5572 | { | |
5573 | if (bs->print) | |
628fe4e4 | 5574 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5575 | else |
628fe4e4 | 5576 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5577 | } |
5578 | else | |
628fe4e4 JK |
5579 | { |
5580 | /* There was a watchpoint, but we're not stopping. | |
5581 | This requires no further action. */ | |
5582 | } | |
c906108c SS |
5583 | break; |
5584 | case bp_longjmp: | |
e2e4d78b | 5585 | case bp_longjmp_call_dummy: |
186c406b | 5586 | case bp_exception: |
0a39bb32 PA |
5587 | if (bs->stop) |
5588 | { | |
5589 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5590 | retval.is_longjmp = bptype != bp_exception; | |
5591 | } | |
5592 | else | |
5593 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5594 | break; |
5595 | case bp_longjmp_resume: | |
186c406b | 5596 | case bp_exception_resume: |
0a39bb32 PA |
5597 | if (bs->stop) |
5598 | { | |
5599 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5600 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5601 | } | |
5602 | else | |
5603 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5604 | break; |
5605 | case bp_step_resume: | |
5606 | if (bs->stop) | |
628fe4e4 JK |
5607 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5608 | else | |
c906108c | 5609 | { |
628fe4e4 JK |
5610 | /* It is for the wrong frame. */ |
5611 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5612 | } |
c906108c | 5613 | break; |
2c03e5be PA |
5614 | case bp_hp_step_resume: |
5615 | if (bs->stop) | |
5616 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5617 | else | |
5618 | { | |
5619 | /* It is for the wrong frame. */ | |
5620 | this_action = BPSTAT_WHAT_SINGLE; | |
5621 | } | |
5622 | break; | |
c906108c | 5623 | case bp_watchpoint_scope: |
c4093a6a | 5624 | case bp_thread_event: |
1900040c | 5625 | case bp_overlay_event: |
0fd8e87f | 5626 | case bp_longjmp_master: |
aa7d318d | 5627 | case bp_std_terminate_master: |
186c406b | 5628 | case bp_exception_master: |
628fe4e4 | 5629 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5630 | break; |
ce78b96d | 5631 | case bp_catchpoint: |
c5aa993b JM |
5632 | if (bs->stop) |
5633 | { | |
5634 | if (bs->print) | |
628fe4e4 | 5635 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5636 | else |
628fe4e4 | 5637 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5638 | } |
5639 | else | |
628fe4e4 JK |
5640 | { |
5641 | /* There was a catchpoint, but we're not stopping. | |
5642 | This requires no further action. */ | |
5643 | } | |
5644 | break; | |
628fe4e4 | 5645 | case bp_jit_event: |
628fe4e4 | 5646 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5647 | break; |
c906108c | 5648 | case bp_call_dummy: |
53a5351d JM |
5649 | /* Make sure the action is stop (silent or noisy), |
5650 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5651 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5652 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5653 | break; |
5654 | case bp_std_terminate: | |
5655 | /* Make sure the action is stop (silent or noisy), | |
5656 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5657 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5658 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5659 | break; |
1042e4c0 | 5660 | case bp_tracepoint: |
7a697b8d | 5661 | case bp_fast_tracepoint: |
0fb4aa4b | 5662 | case bp_static_tracepoint: |
1042e4c0 SS |
5663 | /* Tracepoint hits should not be reported back to GDB, and |
5664 | if one got through somehow, it should have been filtered | |
5665 | out already. */ | |
5666 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5667 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5668 | break; |
5669 | case bp_gnu_ifunc_resolver: | |
5670 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5671 | this_action = BPSTAT_WHAT_SINGLE; | |
5672 | break; | |
5673 | case bp_gnu_ifunc_resolver_return: | |
5674 | /* The breakpoint will be removed, execution will restart from the | |
5675 | PC of the former breakpoint. */ | |
5676 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5677 | break; | |
e7e0cddf SS |
5678 | |
5679 | case bp_dprintf: | |
a11cfd87 HZ |
5680 | if (bs->stop) |
5681 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5682 | else | |
5683 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5684 | break; |
5685 | ||
628fe4e4 JK |
5686 | default: |
5687 | internal_error (__FILE__, __LINE__, | |
5688 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5689 | } |
628fe4e4 | 5690 | |
325fac50 | 5691 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5692 | } |
628fe4e4 | 5693 | |
243a9253 PA |
5694 | return retval; |
5695 | } | |
628fe4e4 | 5696 | |
243a9253 PA |
5697 | void |
5698 | bpstat_run_callbacks (bpstat bs_head) | |
5699 | { | |
5700 | bpstat bs; | |
628fe4e4 | 5701 | |
0e30163f JK |
5702 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5703 | { | |
5704 | struct breakpoint *b = bs->breakpoint_at; | |
5705 | ||
5706 | if (b == NULL) | |
5707 | continue; | |
5708 | switch (b->type) | |
5709 | { | |
243a9253 PA |
5710 | case bp_jit_event: |
5711 | handle_jit_event (); | |
5712 | break; | |
0e30163f JK |
5713 | case bp_gnu_ifunc_resolver: |
5714 | gnu_ifunc_resolver_stop (b); | |
5715 | break; | |
5716 | case bp_gnu_ifunc_resolver_return: | |
5717 | gnu_ifunc_resolver_return_stop (b); | |
5718 | break; | |
5719 | } | |
5720 | } | |
c906108c SS |
5721 | } |
5722 | ||
5723 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5724 | without hardware support). This isn't related to a specific bpstat, | |
5725 | just to things like whether watchpoints are set. */ | |
5726 | ||
c5aa993b | 5727 | int |
fba45db2 | 5728 | bpstat_should_step (void) |
c906108c SS |
5729 | { |
5730 | struct breakpoint *b; | |
cc59ec59 | 5731 | |
c906108c | 5732 | ALL_BREAKPOINTS (b) |
717a8278 | 5733 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5734 | return 1; |
c906108c SS |
5735 | return 0; |
5736 | } | |
5737 | ||
67822962 PA |
5738 | int |
5739 | bpstat_causes_stop (bpstat bs) | |
5740 | { | |
5741 | for (; bs != NULL; bs = bs->next) | |
5742 | if (bs->stop) | |
5743 | return 1; | |
5744 | ||
5745 | return 0; | |
5746 | } | |
5747 | ||
c906108c | 5748 | \f |
c5aa993b | 5749 | |
170b53b2 UW |
5750 | /* Compute a string of spaces suitable to indent the next line |
5751 | so it starts at the position corresponding to the table column | |
5752 | named COL_NAME in the currently active table of UIOUT. */ | |
5753 | ||
5754 | static char * | |
5755 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5756 | { | |
5757 | static char wrap_indent[80]; | |
5758 | int i, total_width, width, align; | |
c5209615 | 5759 | const char *text; |
170b53b2 UW |
5760 | |
5761 | total_width = 0; | |
112e8700 | 5762 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5763 | { |
5764 | if (strcmp (text, col_name) == 0) | |
5765 | { | |
5766 | gdb_assert (total_width < sizeof wrap_indent); | |
5767 | memset (wrap_indent, ' ', total_width); | |
5768 | wrap_indent[total_width] = 0; | |
5769 | ||
5770 | return wrap_indent; | |
5771 | } | |
5772 | ||
5773 | total_width += width + 1; | |
5774 | } | |
5775 | ||
5776 | return NULL; | |
5777 | } | |
5778 | ||
b775012e LM |
5779 | /* Determine if the locations of this breakpoint will have their conditions |
5780 | evaluated by the target, host or a mix of both. Returns the following: | |
5781 | ||
5782 | "host": Host evals condition. | |
5783 | "host or target": Host or Target evals condition. | |
5784 | "target": Target evals condition. | |
5785 | */ | |
5786 | ||
5787 | static const char * | |
5788 | bp_condition_evaluator (struct breakpoint *b) | |
5789 | { | |
5790 | struct bp_location *bl; | |
5791 | char host_evals = 0; | |
5792 | char target_evals = 0; | |
5793 | ||
5794 | if (!b) | |
5795 | return NULL; | |
5796 | ||
5797 | if (!is_breakpoint (b)) | |
5798 | return NULL; | |
5799 | ||
5800 | if (gdb_evaluates_breakpoint_condition_p () | |
5801 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5802 | return condition_evaluation_host; | |
5803 | ||
5804 | for (bl = b->loc; bl; bl = bl->next) | |
5805 | { | |
5806 | if (bl->cond_bytecode) | |
5807 | target_evals++; | |
5808 | else | |
5809 | host_evals++; | |
5810 | } | |
5811 | ||
5812 | if (host_evals && target_evals) | |
5813 | return condition_evaluation_both; | |
5814 | else if (target_evals) | |
5815 | return condition_evaluation_target; | |
5816 | else | |
5817 | return condition_evaluation_host; | |
5818 | } | |
5819 | ||
5820 | /* Determine the breakpoint location's condition evaluator. This is | |
5821 | similar to bp_condition_evaluator, but for locations. */ | |
5822 | ||
5823 | static const char * | |
5824 | bp_location_condition_evaluator (struct bp_location *bl) | |
5825 | { | |
5826 | if (bl && !is_breakpoint (bl->owner)) | |
5827 | return NULL; | |
5828 | ||
5829 | if (gdb_evaluates_breakpoint_condition_p () | |
5830 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5831 | return condition_evaluation_host; | |
5832 | ||
5833 | if (bl && bl->cond_bytecode) | |
5834 | return condition_evaluation_target; | |
5835 | else | |
5836 | return condition_evaluation_host; | |
5837 | } | |
5838 | ||
859825b8 JK |
5839 | /* Print the LOC location out of the list of B->LOC locations. */ |
5840 | ||
170b53b2 UW |
5841 | static void |
5842 | print_breakpoint_location (struct breakpoint *b, | |
5843 | struct bp_location *loc) | |
0d381245 | 5844 | { |
79a45e25 | 5845 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5846 | |
5847 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5848 | |
859825b8 JK |
5849 | if (loc != NULL && loc->shlib_disabled) |
5850 | loc = NULL; | |
5851 | ||
6c95b8df PA |
5852 | if (loc != NULL) |
5853 | set_current_program_space (loc->pspace); | |
5854 | ||
56435ebe | 5855 | if (b->display_canonical) |
d28cd78a | 5856 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5857 | else if (loc && loc->symtab) |
0d381245 | 5858 | { |
4a27f119 KS |
5859 | const struct symbol *sym = loc->symbol; |
5860 | ||
0d381245 VP |
5861 | if (sym) |
5862 | { | |
112e8700 | 5863 | uiout->text ("in "); |
cbe56571 TT |
5864 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
5865 | ui_out_style_kind::FUNCTION); | |
112e8700 SM |
5866 | uiout->text (" "); |
5867 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5868 | uiout->text ("at "); | |
0d381245 | 5869 | } |
112e8700 | 5870 | uiout->field_string ("file", |
cbe56571 TT |
5871 | symtab_to_filename_for_display (loc->symtab), |
5872 | ui_out_style_kind::FILE); | |
112e8700 | 5873 | uiout->text (":"); |
05cba821 | 5874 | |
112e8700 SM |
5875 | if (uiout->is_mi_like_p ()) |
5876 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5877 | |
112e8700 | 5878 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5879 | } |
859825b8 | 5880 | else if (loc) |
0d381245 | 5881 | { |
d7e74731 | 5882 | string_file stb; |
170b53b2 | 5883 | |
d7e74731 | 5884 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5885 | demangle, ""); |
112e8700 | 5886 | uiout->field_stream ("at", stb); |
0d381245 | 5887 | } |
859825b8 | 5888 | else |
f00aae0f | 5889 | { |
d28cd78a TT |
5890 | uiout->field_string ("pending", |
5891 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5892 | /* If extra_string is available, it could be holding a condition |
5893 | or dprintf arguments. In either case, make sure it is printed, | |
5894 | too, but only for non-MI streams. */ | |
112e8700 | 5895 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5896 | { |
5897 | if (b->type == bp_dprintf) | |
112e8700 | 5898 | uiout->text (","); |
f00aae0f | 5899 | else |
112e8700 SM |
5900 | uiout->text (" "); |
5901 | uiout->text (b->extra_string); | |
f00aae0f KS |
5902 | } |
5903 | } | |
6c95b8df | 5904 | |
b775012e LM |
5905 | if (loc && is_breakpoint (b) |
5906 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5907 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5908 | { | |
112e8700 SM |
5909 | uiout->text (" ("); |
5910 | uiout->field_string ("evaluated-by", | |
b775012e | 5911 | bp_location_condition_evaluator (loc)); |
112e8700 | 5912 | uiout->text (")"); |
b775012e | 5913 | } |
0d381245 VP |
5914 | } |
5915 | ||
269b11a2 PA |
5916 | static const char * |
5917 | bptype_string (enum bptype type) | |
c906108c | 5918 | { |
c4093a6a JM |
5919 | struct ep_type_description |
5920 | { | |
5921 | enum bptype type; | |
a121b7c1 | 5922 | const char *description; |
c4093a6a JM |
5923 | }; |
5924 | static struct ep_type_description bptypes[] = | |
c906108c | 5925 | { |
c5aa993b JM |
5926 | {bp_none, "?deleted?"}, |
5927 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5928 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5929 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5930 | {bp_until, "until"}, |
5931 | {bp_finish, "finish"}, | |
5932 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5933 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5934 | {bp_read_watchpoint, "read watchpoint"}, |
5935 | {bp_access_watchpoint, "acc watchpoint"}, | |
5936 | {bp_longjmp, "longjmp"}, | |
5937 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5938 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5939 | {bp_exception, "exception"}, |
5940 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5941 | {bp_step_resume, "step resume"}, |
2c03e5be | 5942 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5943 | {bp_watchpoint_scope, "watchpoint scope"}, |
5944 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5945 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5946 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5947 | {bp_thread_event, "thread events"}, |
1900040c | 5948 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5949 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5950 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5951 | {bp_exception_master, "exception master"}, |
ce78b96d | 5952 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5953 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5954 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5955 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5956 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5957 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5958 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5959 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5960 | }; |
269b11a2 PA |
5961 | |
5962 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5963 | || ((int) type != bptypes[(int) type].type)) | |
5964 | internal_error (__FILE__, __LINE__, | |
5965 | _("bptypes table does not describe type #%d."), | |
5966 | (int) type); | |
5967 | ||
5968 | return bptypes[(int) type].description; | |
5969 | } | |
5970 | ||
998580f1 MK |
5971 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5972 | For CLI, prefix the list with the string 'inf'. */ | |
5973 | ||
5974 | static void | |
5975 | output_thread_groups (struct ui_out *uiout, | |
5976 | const char *field_name, | |
5c632425 | 5977 | const std::vector<int> &inf_nums, |
998580f1 MK |
5978 | int mi_only) |
5979 | { | |
112e8700 | 5980 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5981 | |
5982 | /* For backward compatibility, don't display inferiors in CLI unless | |
5983 | there are several. Always display them for MI. */ | |
5984 | if (!is_mi && mi_only) | |
5985 | return; | |
5986 | ||
10f489e5 | 5987 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5988 | |
5c632425 | 5989 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5990 | { |
5991 | if (is_mi) | |
5992 | { | |
5993 | char mi_group[10]; | |
5994 | ||
5c632425 | 5995 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5996 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5997 | } |
5998 | else | |
5999 | { | |
6000 | if (i == 0) | |
112e8700 | 6001 | uiout->text (" inf "); |
998580f1 | 6002 | else |
112e8700 | 6003 | uiout->text (", "); |
998580f1 | 6004 | |
5c632425 | 6005 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6006 | } |
6007 | } | |
998580f1 MK |
6008 | } |
6009 | ||
269b11a2 PA |
6010 | /* Print B to gdb_stdout. */ |
6011 | ||
6012 | static void | |
6013 | print_one_breakpoint_location (struct breakpoint *b, | |
6014 | struct bp_location *loc, | |
6015 | int loc_number, | |
6016 | struct bp_location **last_loc, | |
269b11a2 PA |
6017 | int allflag) |
6018 | { | |
6019 | struct command_line *l; | |
c2c6d25f | 6020 | static char bpenables[] = "nynny"; |
c906108c | 6021 | |
79a45e25 | 6022 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6023 | int header_of_multiple = 0; |
6024 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6025 | struct value_print_options opts; |
6026 | ||
6027 | get_user_print_options (&opts); | |
0d381245 VP |
6028 | |
6029 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6030 | /* See comment in print_one_breakpoint concerning treatment of |
6031 | breakpoints with single disabled location. */ | |
0d381245 VP |
6032 | if (loc == NULL |
6033 | && (b->loc != NULL | |
6034 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6035 | header_of_multiple = 1; | |
6036 | if (loc == NULL) | |
6037 | loc = b->loc; | |
6038 | ||
c4093a6a JM |
6039 | annotate_record (); |
6040 | ||
6041 | /* 1 */ | |
6042 | annotate_field (0); | |
0d381245 | 6043 | if (part_of_multiple) |
528e1572 | 6044 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6045 | else |
528e1572 | 6046 | uiout->field_int ("number", b->number); |
c4093a6a JM |
6047 | |
6048 | /* 2 */ | |
6049 | annotate_field (1); | |
0d381245 | 6050 | if (part_of_multiple) |
112e8700 | 6051 | uiout->field_skip ("type"); |
269b11a2 | 6052 | else |
112e8700 | 6053 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6054 | |
6055 | /* 3 */ | |
6056 | annotate_field (2); | |
0d381245 | 6057 | if (part_of_multiple) |
112e8700 | 6058 | uiout->field_skip ("disp"); |
0d381245 | 6059 | else |
112e8700 | 6060 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6061 | |
c4093a6a JM |
6062 | /* 4 */ |
6063 | annotate_field (3); | |
0d381245 | 6064 | if (part_of_multiple) |
112e8700 | 6065 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6066 | else |
112e8700 | 6067 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6068 | |
c4093a6a | 6069 | /* 5 and 6 */ |
3086aeae | 6070 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6071 | { |
4a64f543 MS |
6072 | /* Although the print_one can possibly print all locations, |
6073 | calling it here is not likely to get any nice result. So, | |
6074 | make sure there's just one location. */ | |
0d381245 | 6075 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6076 | b->ops->print_one (b, last_loc); |
0d381245 | 6077 | } |
3086aeae DJ |
6078 | else |
6079 | switch (b->type) | |
6080 | { | |
6081 | case bp_none: | |
6082 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6083 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6084 | break; |
c906108c | 6085 | |
3086aeae DJ |
6086 | case bp_watchpoint: |
6087 | case bp_hardware_watchpoint: | |
6088 | case bp_read_watchpoint: | |
6089 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6090 | { |
6091 | struct watchpoint *w = (struct watchpoint *) b; | |
6092 | ||
6093 | /* Field 4, the address, is omitted (which makes the columns | |
6094 | not line up too nicely with the headers, but the effect | |
6095 | is relatively readable). */ | |
6096 | if (opts.addressprint) | |
112e8700 | 6097 | uiout->field_skip ("addr"); |
3a5c3e22 | 6098 | annotate_field (5); |
112e8700 | 6099 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6100 | } |
3086aeae DJ |
6101 | break; |
6102 | ||
3086aeae DJ |
6103 | case bp_breakpoint: |
6104 | case bp_hardware_breakpoint: | |
7c16b83e | 6105 | case bp_single_step: |
3086aeae DJ |
6106 | case bp_until: |
6107 | case bp_finish: | |
6108 | case bp_longjmp: | |
6109 | case bp_longjmp_resume: | |
e2e4d78b | 6110 | case bp_longjmp_call_dummy: |
186c406b TT |
6111 | case bp_exception: |
6112 | case bp_exception_resume: | |
3086aeae | 6113 | case bp_step_resume: |
2c03e5be | 6114 | case bp_hp_step_resume: |
3086aeae DJ |
6115 | case bp_watchpoint_scope: |
6116 | case bp_call_dummy: | |
aa7d318d | 6117 | case bp_std_terminate: |
3086aeae DJ |
6118 | case bp_shlib_event: |
6119 | case bp_thread_event: | |
6120 | case bp_overlay_event: | |
0fd8e87f | 6121 | case bp_longjmp_master: |
aa7d318d | 6122 | case bp_std_terminate_master: |
186c406b | 6123 | case bp_exception_master: |
1042e4c0 | 6124 | case bp_tracepoint: |
7a697b8d | 6125 | case bp_fast_tracepoint: |
0fb4aa4b | 6126 | case bp_static_tracepoint: |
e7e0cddf | 6127 | case bp_dprintf: |
4efc6507 | 6128 | case bp_jit_event: |
0e30163f JK |
6129 | case bp_gnu_ifunc_resolver: |
6130 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6131 | if (opts.addressprint) |
3086aeae DJ |
6132 | { |
6133 | annotate_field (4); | |
54e52265 | 6134 | if (header_of_multiple) |
112e8700 | 6135 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6136 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6137 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6138 | else |
112e8700 | 6139 | uiout->field_core_addr ("addr", |
5af949e3 | 6140 | loc->gdbarch, loc->address); |
3086aeae DJ |
6141 | } |
6142 | annotate_field (5); | |
0d381245 | 6143 | if (!header_of_multiple) |
170b53b2 | 6144 | print_breakpoint_location (b, loc); |
0d381245 | 6145 | if (b->loc) |
a6d9a66e | 6146 | *last_loc = b->loc; |
3086aeae DJ |
6147 | break; |
6148 | } | |
c906108c | 6149 | |
6c95b8df | 6150 | |
998580f1 | 6151 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6152 | { |
5c632425 | 6153 | std::vector<int> inf_nums; |
998580f1 | 6154 | int mi_only = 1; |
6c95b8df | 6155 | |
08036331 | 6156 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6157 | { |
6158 | if (inf->pspace == loc->pspace) | |
5c632425 | 6159 | inf_nums.push_back (inf->num); |
6c95b8df | 6160 | } |
998580f1 MK |
6161 | |
6162 | /* For backward compatibility, don't display inferiors in CLI unless | |
6163 | there are several. Always display for MI. */ | |
6164 | if (allflag | |
6165 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6166 | && (number_of_program_spaces () > 1 | |
6167 | || number_of_inferiors () > 1) | |
6168 | /* LOC is for existing B, it cannot be in | |
6169 | moribund_locations and thus having NULL OWNER. */ | |
6170 | && loc->owner->type != bp_catchpoint)) | |
6171 | mi_only = 0; | |
5c632425 | 6172 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6173 | } |
6174 | ||
4a306c9a | 6175 | if (!part_of_multiple) |
c4093a6a | 6176 | { |
4a306c9a JB |
6177 | if (b->thread != -1) |
6178 | { | |
6179 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6180 | "stop only in" line a little further down. */ |
112e8700 SM |
6181 | uiout->text (" thread "); |
6182 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6183 | } |
6184 | else if (b->task != 0) | |
6185 | { | |
112e8700 SM |
6186 | uiout->text (" task "); |
6187 | uiout->field_int ("task", b->task); | |
4a306c9a | 6188 | } |
c4093a6a | 6189 | } |
f1310107 | 6190 | |
112e8700 | 6191 | uiout->text ("\n"); |
f1310107 | 6192 | |
348d480f | 6193 | if (!part_of_multiple) |
f1310107 TJB |
6194 | b->ops->print_one_detail (b, uiout); |
6195 | ||
0d381245 | 6196 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6197 | { |
6198 | annotate_field (6); | |
112e8700 | 6199 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6200 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6201 | the frame ID. */ |
112e8700 | 6202 | uiout->field_core_addr ("frame", |
5af949e3 | 6203 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6204 | uiout->text ("\n"); |
c4093a6a JM |
6205 | } |
6206 | ||
28010a5d | 6207 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6208 | { |
6209 | annotate_field (7); | |
d77f58be | 6210 | if (is_tracepoint (b)) |
112e8700 | 6211 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6212 | else |
112e8700 SM |
6213 | uiout->text ("\tstop only if "); |
6214 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6215 | |
6216 | /* Print whether the target is doing the breakpoint's condition | |
6217 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6218 | if (is_breakpoint (b) | |
6219 | && breakpoint_condition_evaluation_mode () | |
6220 | == condition_evaluation_target) | |
6221 | { | |
112e8700 SM |
6222 | uiout->text (" ("); |
6223 | uiout->field_string ("evaluated-by", | |
b775012e | 6224 | bp_condition_evaluator (b)); |
112e8700 | 6225 | uiout->text (" evals)"); |
b775012e | 6226 | } |
112e8700 | 6227 | uiout->text ("\n"); |
0101ce28 JJ |
6228 | } |
6229 | ||
0d381245 | 6230 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6231 | { |
4a64f543 | 6232 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6233 | uiout->text ("\tstop only in thread "); |
6234 | if (uiout->is_mi_like_p ()) | |
6235 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6236 | else |
6237 | { | |
6238 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6239 | ||
112e8700 | 6240 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6241 | } |
112e8700 | 6242 | uiout->text ("\n"); |
c4093a6a JM |
6243 | } |
6244 | ||
556ec64d YQ |
6245 | if (!part_of_multiple) |
6246 | { | |
6247 | if (b->hit_count) | |
31f56a27 YQ |
6248 | { |
6249 | /* FIXME should make an annotation for this. */ | |
6250 | if (is_catchpoint (b)) | |
112e8700 | 6251 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6252 | else if (is_tracepoint (b)) |
112e8700 | 6253 | uiout->text ("\ttracepoint"); |
31f56a27 | 6254 | else |
112e8700 SM |
6255 | uiout->text ("\tbreakpoint"); |
6256 | uiout->text (" already hit "); | |
6257 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6258 | if (b->hit_count == 1) |
112e8700 | 6259 | uiout->text (" time\n"); |
31f56a27 | 6260 | else |
112e8700 | 6261 | uiout->text (" times\n"); |
31f56a27 | 6262 | } |
556ec64d YQ |
6263 | else |
6264 | { | |
31f56a27 | 6265 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6266 | if (uiout->is_mi_like_p ()) |
6267 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6268 | } |
6269 | } | |
8b93c638 | 6270 | |
0d381245 | 6271 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6272 | { |
6273 | annotate_field (8); | |
112e8700 SM |
6274 | uiout->text ("\tignore next "); |
6275 | uiout->field_int ("ignore", b->ignore_count); | |
6276 | uiout->text (" hits\n"); | |
c4093a6a | 6277 | } |
059fb39f | 6278 | |
816338b5 SS |
6279 | /* Note that an enable count of 1 corresponds to "enable once" |
6280 | behavior, which is reported by the combination of enablement and | |
6281 | disposition, so we don't need to mention it here. */ | |
6282 | if (!part_of_multiple && b->enable_count > 1) | |
6283 | { | |
6284 | annotate_field (8); | |
112e8700 | 6285 | uiout->text ("\tdisable after "); |
816338b5 SS |
6286 | /* Tweak the wording to clarify that ignore and enable counts |
6287 | are distinct, and have additive effect. */ | |
6288 | if (b->ignore_count) | |
112e8700 | 6289 | uiout->text ("additional "); |
816338b5 | 6290 | else |
112e8700 SM |
6291 | uiout->text ("next "); |
6292 | uiout->field_int ("enable", b->enable_count); | |
6293 | uiout->text (" hits\n"); | |
816338b5 SS |
6294 | } |
6295 | ||
f196051f SS |
6296 | if (!part_of_multiple && is_tracepoint (b)) |
6297 | { | |
6298 | struct tracepoint *tp = (struct tracepoint *) b; | |
6299 | ||
6300 | if (tp->traceframe_usage) | |
6301 | { | |
112e8700 SM |
6302 | uiout->text ("\ttrace buffer usage "); |
6303 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6304 | uiout->text (" bytes\n"); | |
f196051f SS |
6305 | } |
6306 | } | |
d3ce09f5 | 6307 | |
d1b0a7bf | 6308 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6309 | if (!part_of_multiple && l) |
c4093a6a JM |
6310 | { |
6311 | annotate_field (9); | |
2e783024 | 6312 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6313 | print_command_lines (uiout, l, 4); |
c4093a6a | 6314 | } |
d24317b4 | 6315 | |
d9b3f62e | 6316 | if (is_tracepoint (b)) |
1042e4c0 | 6317 | { |
d9b3f62e PA |
6318 | struct tracepoint *t = (struct tracepoint *) b; |
6319 | ||
6320 | if (!part_of_multiple && t->pass_count) | |
6321 | { | |
6322 | annotate_field (10); | |
112e8700 SM |
6323 | uiout->text ("\tpass count "); |
6324 | uiout->field_int ("pass", t->pass_count); | |
6325 | uiout->text (" \n"); | |
d9b3f62e | 6326 | } |
f2a8bc8a YQ |
6327 | |
6328 | /* Don't display it when tracepoint or tracepoint location is | |
6329 | pending. */ | |
6330 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6331 | { | |
6332 | annotate_field (11); | |
6333 | ||
112e8700 SM |
6334 | if (uiout->is_mi_like_p ()) |
6335 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6336 | loc->inserted ? "y" : "n"); |
6337 | else | |
6338 | { | |
6339 | if (loc->inserted) | |
112e8700 | 6340 | uiout->text ("\t"); |
f2a8bc8a | 6341 | else |
112e8700 SM |
6342 | uiout->text ("\tnot "); |
6343 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6344 | } |
6345 | } | |
1042e4c0 SS |
6346 | } |
6347 | ||
112e8700 | 6348 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6349 | { |
3a5c3e22 PA |
6350 | if (is_watchpoint (b)) |
6351 | { | |
6352 | struct watchpoint *w = (struct watchpoint *) b; | |
6353 | ||
112e8700 | 6354 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6355 | } |
f00aae0f | 6356 | else if (b->location != NULL |
d28cd78a | 6357 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6358 | uiout->field_string ("original-location", |
d28cd78a | 6359 | event_location_to_string (b->location.get ())); |
d24317b4 | 6360 | } |
c4093a6a | 6361 | } |
c5aa993b | 6362 | |
0d381245 VP |
6363 | static void |
6364 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6365 | struct bp_location **last_loc, |
6c95b8df | 6366 | int allflag) |
0d381245 | 6367 | { |
79a45e25 | 6368 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6369 | |
2e783024 TT |
6370 | { |
6371 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6372 | |
2e783024 TT |
6373 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6374 | } | |
0d381245 VP |
6375 | |
6376 | /* If this breakpoint has custom print function, | |
6377 | it's already printed. Otherwise, print individual | |
6378 | locations, if any. */ | |
6379 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6380 | { | |
4a64f543 MS |
6381 | /* If breakpoint has a single location that is disabled, we |
6382 | print it as if it had several locations, since otherwise it's | |
6383 | hard to represent "breakpoint enabled, location disabled" | |
6384 | situation. | |
6385 | ||
6386 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6387 | internally, that's not a property exposed to user. */ |
0d381245 | 6388 | if (b->loc |
a5606eee | 6389 | && !is_hardware_watchpoint (b) |
8d3788bd | 6390 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6391 | { |
6392 | struct bp_location *loc; | |
6393 | int n = 1; | |
8d3788bd | 6394 | |
0d381245 | 6395 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6396 | { |
2e783024 | 6397 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6398 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6399 | } |
0d381245 VP |
6400 | } |
6401 | } | |
6402 | } | |
6403 | ||
a6d9a66e UW |
6404 | static int |
6405 | breakpoint_address_bits (struct breakpoint *b) | |
6406 | { | |
6407 | int print_address_bits = 0; | |
6408 | struct bp_location *loc; | |
6409 | ||
c6d81124 PA |
6410 | /* Software watchpoints that aren't watching memory don't have an |
6411 | address to print. */ | |
6412 | if (is_no_memory_software_watchpoint (b)) | |
6413 | return 0; | |
6414 | ||
a6d9a66e UW |
6415 | for (loc = b->loc; loc; loc = loc->next) |
6416 | { | |
c7437ca6 PA |
6417 | int addr_bit; |
6418 | ||
c7437ca6 | 6419 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6420 | if (addr_bit > print_address_bits) |
6421 | print_address_bits = addr_bit; | |
6422 | } | |
6423 | ||
6424 | return print_address_bits; | |
6425 | } | |
0d381245 | 6426 | |
65630365 | 6427 | /* See breakpoint.h. */ |
c5aa993b | 6428 | |
65630365 PA |
6429 | void |
6430 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6431 | { |
a6d9a66e | 6432 | struct bp_location *dummy_loc = NULL; |
65630365 | 6433 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6434 | } |
c5aa993b | 6435 | |
09d682a4 TT |
6436 | /* Return true if this breakpoint was set by the user, false if it is |
6437 | internal or momentary. */ | |
6438 | ||
6439 | int | |
6440 | user_breakpoint_p (struct breakpoint *b) | |
6441 | { | |
46c6471b | 6442 | return b->number > 0; |
09d682a4 TT |
6443 | } |
6444 | ||
93daf339 TT |
6445 | /* See breakpoint.h. */ |
6446 | ||
6447 | int | |
6448 | pending_breakpoint_p (struct breakpoint *b) | |
6449 | { | |
6450 | return b->loc == NULL; | |
6451 | } | |
6452 | ||
7f3b0473 | 6453 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6454 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6455 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6456 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6457 | ones for which it returns non-zero. Return the total number of | |
6458 | breakpoints listed. */ | |
c906108c | 6459 | |
d77f58be | 6460 | static int |
4495129a | 6461 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6462 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6463 | { |
52f0bd74 | 6464 | struct breakpoint *b; |
a6d9a66e | 6465 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6466 | int nr_printable_breakpoints; |
79a45b7d | 6467 | struct value_print_options opts; |
a6d9a66e | 6468 | int print_address_bits = 0; |
269b11a2 | 6469 | int print_type_col_width = 14; |
79a45e25 | 6470 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6471 | |
79a45b7d TT |
6472 | get_user_print_options (&opts); |
6473 | ||
4a64f543 MS |
6474 | /* Compute the number of rows in the table, as well as the size |
6475 | required for address fields. */ | |
7f3b0473 AC |
6476 | nr_printable_breakpoints = 0; |
6477 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6478 | { |
6479 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6480 | if (filter && !filter (b)) | |
6481 | continue; | |
6482 | ||
6483 | /* If we have an "args" string, it is a list of breakpoints to | |
6484 | accept. Skip the others. */ | |
6485 | if (args != NULL && *args != '\0') | |
6486 | { | |
6487 | if (allflag && parse_and_eval_long (args) != b->number) | |
6488 | continue; | |
6489 | if (!allflag && !number_is_in_list (args, b->number)) | |
6490 | continue; | |
6491 | } | |
269b11a2 | 6492 | |
e5a67952 MS |
6493 | if (allflag || user_breakpoint_p (b)) |
6494 | { | |
6495 | int addr_bit, type_len; | |
a6d9a66e | 6496 | |
e5a67952 MS |
6497 | addr_bit = breakpoint_address_bits (b); |
6498 | if (addr_bit > print_address_bits) | |
6499 | print_address_bits = addr_bit; | |
269b11a2 | 6500 | |
e5a67952 MS |
6501 | type_len = strlen (bptype_string (b->type)); |
6502 | if (type_len > print_type_col_width) | |
6503 | print_type_col_width = type_len; | |
6504 | ||
6505 | nr_printable_breakpoints++; | |
6506 | } | |
6507 | } | |
7f3b0473 | 6508 | |
4a2b031d TT |
6509 | { |
6510 | ui_out_emit_table table_emitter (uiout, | |
6511 | opts.addressprint ? 6 : 5, | |
6512 | nr_printable_breakpoints, | |
6513 | "BreakpointTable"); | |
6514 | ||
6515 | if (nr_printable_breakpoints > 0) | |
6516 | annotate_breakpoints_headers (); | |
6517 | if (nr_printable_breakpoints > 0) | |
6518 | annotate_field (0); | |
6519 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6520 | if (nr_printable_breakpoints > 0) | |
6521 | annotate_field (1); | |
6522 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6523 | if (nr_printable_breakpoints > 0) | |
6524 | annotate_field (2); | |
6525 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6526 | if (nr_printable_breakpoints > 0) | |
6527 | annotate_field (3); | |
6528 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6529 | if (opts.addressprint) | |
6530 | { | |
6531 | if (nr_printable_breakpoints > 0) | |
6532 | annotate_field (4); | |
6533 | if (print_address_bits <= 32) | |
6534 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6535 | else | |
6536 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6537 | } | |
6538 | if (nr_printable_breakpoints > 0) | |
6539 | annotate_field (5); | |
6540 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6541 | uiout->table_body (); | |
6542 | if (nr_printable_breakpoints > 0) | |
6543 | annotate_breakpoints_table (); | |
6544 | ||
6545 | ALL_BREAKPOINTS (b) | |
6546 | { | |
6547 | QUIT; | |
6548 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6549 | if (filter && !filter (b)) | |
6550 | continue; | |
e5a67952 | 6551 | |
4a2b031d TT |
6552 | /* If we have an "args" string, it is a list of breakpoints to |
6553 | accept. Skip the others. */ | |
e5a67952 | 6554 | |
4a2b031d TT |
6555 | if (args != NULL && *args != '\0') |
6556 | { | |
6557 | if (allflag) /* maintenance info breakpoint */ | |
6558 | { | |
6559 | if (parse_and_eval_long (args) != b->number) | |
6560 | continue; | |
6561 | } | |
6562 | else /* all others */ | |
6563 | { | |
6564 | if (!number_is_in_list (args, b->number)) | |
6565 | continue; | |
6566 | } | |
6567 | } | |
6568 | /* We only print out user settable breakpoints unless the | |
6569 | allflag is set. */ | |
6570 | if (allflag || user_breakpoint_p (b)) | |
6571 | print_one_breakpoint (b, &last_loc, allflag); | |
6572 | } | |
6573 | } | |
698384cd | 6574 | |
7f3b0473 | 6575 | if (nr_printable_breakpoints == 0) |
c906108c | 6576 | { |
4a64f543 MS |
6577 | /* If there's a filter, let the caller decide how to report |
6578 | empty list. */ | |
d77f58be SS |
6579 | if (!filter) |
6580 | { | |
e5a67952 | 6581 | if (args == NULL || *args == '\0') |
112e8700 | 6582 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6583 | else |
112e8700 | 6584 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6585 | args); |
d77f58be | 6586 | } |
c906108c SS |
6587 | } |
6588 | else | |
c4093a6a | 6589 | { |
a6d9a66e UW |
6590 | if (last_loc && !server_command) |
6591 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6592 | } |
c906108c | 6593 | |
4a64f543 | 6594 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6595 | there have been breakpoints? */ |
c906108c | 6596 | annotate_breakpoints_table_end (); |
d77f58be SS |
6597 | |
6598 | return nr_printable_breakpoints; | |
c906108c SS |
6599 | } |
6600 | ||
ad443146 SS |
6601 | /* Display the value of default-collect in a way that is generally |
6602 | compatible with the breakpoint list. */ | |
6603 | ||
6604 | static void | |
6605 | default_collect_info (void) | |
6606 | { | |
79a45e25 PA |
6607 | struct ui_out *uiout = current_uiout; |
6608 | ||
ad443146 SS |
6609 | /* If it has no value (which is frequently the case), say nothing; a |
6610 | message like "No default-collect." gets in user's face when it's | |
6611 | not wanted. */ | |
6612 | if (!*default_collect) | |
6613 | return; | |
6614 | ||
6615 | /* The following phrase lines up nicely with per-tracepoint collect | |
6616 | actions. */ | |
112e8700 SM |
6617 | uiout->text ("default collect "); |
6618 | uiout->field_string ("default-collect", default_collect); | |
6619 | uiout->text (" \n"); | |
ad443146 SS |
6620 | } |
6621 | ||
c906108c | 6622 | static void |
0b39b52e | 6623 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6624 | { |
e5a67952 | 6625 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6626 | |
6627 | default_collect_info (); | |
d77f58be SS |
6628 | } |
6629 | ||
6630 | static void | |
1d12d88f | 6631 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6632 | { |
e5a67952 | 6633 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6634 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6635 | |
6636 | if (num_printed == 0) | |
6637 | { | |
e5a67952 | 6638 | if (args == NULL || *args == '\0') |
112e8700 | 6639 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6640 | else |
112e8700 | 6641 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6642 | } |
c906108c SS |
6643 | } |
6644 | ||
7a292a7a | 6645 | static void |
4495129a | 6646 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6647 | { |
e5a67952 | 6648 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6649 | |
6650 | default_collect_info (); | |
c906108c SS |
6651 | } |
6652 | ||
0d381245 | 6653 | static int |
714835d5 | 6654 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6655 | struct program_space *pspace, |
714835d5 | 6656 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6657 | { |
6658 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6659 | |
0d381245 VP |
6660 | for (; bl; bl = bl->next) |
6661 | { | |
6c95b8df PA |
6662 | if (bl->pspace == pspace |
6663 | && bl->address == pc | |
0d381245 VP |
6664 | && (!overlay_debugging || bl->section == section)) |
6665 | return 1; | |
6666 | } | |
6667 | return 0; | |
6668 | } | |
6669 | ||
672f9b60 | 6670 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6671 | concerns with logical breakpoints, so we match program spaces, not |
6672 | address spaces. */ | |
c906108c SS |
6673 | |
6674 | static void | |
6c95b8df PA |
6675 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6676 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6677 | struct obj_section *section, int thread) |
c906108c | 6678 | { |
52f0bd74 AC |
6679 | int others = 0; |
6680 | struct breakpoint *b; | |
c906108c SS |
6681 | |
6682 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6683 | others += (user_breakpoint_p (b) |
6684 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6685 | if (others > 0) |
6686 | { | |
a3f17187 AC |
6687 | if (others == 1) |
6688 | printf_filtered (_("Note: breakpoint ")); | |
6689 | else /* if (others == ???) */ | |
6690 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6691 | ALL_BREAKPOINTS (b) |
672f9b60 | 6692 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6693 | { |
6694 | others--; | |
6695 | printf_filtered ("%d", b->number); | |
6696 | if (b->thread == -1 && thread != -1) | |
6697 | printf_filtered (" (all threads)"); | |
6698 | else if (b->thread != -1) | |
6699 | printf_filtered (" (thread %d)", b->thread); | |
6700 | printf_filtered ("%s%s ", | |
059fb39f | 6701 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6702 | || b->enable_state == bp_call_disabled) |
0d381245 | 6703 | ? " (disabled)" |
0d381245 VP |
6704 | : ""), |
6705 | (others > 1) ? "," | |
6706 | : ((others == 1) ? " and" : "")); | |
6707 | } | |
a3f17187 | 6708 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6709 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6710 | printf_filtered (".\n"); |
6711 | } | |
6712 | } | |
6713 | \f | |
c906108c | 6714 | |
e4f237da | 6715 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6716 | BPT locations. For some breakpoint types, the locations' address members |
6717 | are irrelevant and it makes no sense to attempt to compare them to other | |
6718 | addresses (or use them for any other purpose either). | |
e4f237da | 6719 | |
4a64f543 | 6720 | More specifically, each of the following breakpoint types will |
244558af | 6721 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6722 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6723 | breakpoint location at address zero: |
e4f237da KB |
6724 | |
6725 | bp_watchpoint | |
2d134ed3 PA |
6726 | bp_catchpoint |
6727 | ||
6728 | */ | |
e4f237da KB |
6729 | |
6730 | static int | |
6731 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6732 | { | |
6733 | enum bptype type = bpt->type; | |
6734 | ||
2d134ed3 PA |
6735 | return (type != bp_watchpoint && type != bp_catchpoint); |
6736 | } | |
6737 | ||
6738 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6739 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6740 | ||
6741 | static int | |
4a64f543 MS |
6742 | watchpoint_locations_match (struct bp_location *loc1, |
6743 | struct bp_location *loc2) | |
2d134ed3 | 6744 | { |
3a5c3e22 PA |
6745 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6746 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6747 | ||
6748 | /* Both of them must exist. */ | |
6749 | gdb_assert (w1 != NULL); | |
6750 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6751 | |
4a64f543 MS |
6752 | /* If the target can evaluate the condition expression in hardware, |
6753 | then we we need to insert both watchpoints even if they are at | |
6754 | the same place. Otherwise the watchpoint will only trigger when | |
6755 | the condition of whichever watchpoint was inserted evaluates to | |
6756 | true, not giving a chance for GDB to check the condition of the | |
6757 | other watchpoint. */ | |
3a5c3e22 | 6758 | if ((w1->cond_exp |
4a64f543 MS |
6759 | && target_can_accel_watchpoint_condition (loc1->address, |
6760 | loc1->length, | |
0cf6dd15 | 6761 | loc1->watchpoint_type, |
4d01a485 | 6762 | w1->cond_exp.get ())) |
3a5c3e22 | 6763 | || (w2->cond_exp |
4a64f543 MS |
6764 | && target_can_accel_watchpoint_condition (loc2->address, |
6765 | loc2->length, | |
0cf6dd15 | 6766 | loc2->watchpoint_type, |
4d01a485 | 6767 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6768 | return 0; |
6769 | ||
85d721b8 PA |
6770 | /* Note that this checks the owner's type, not the location's. In |
6771 | case the target does not support read watchpoints, but does | |
6772 | support access watchpoints, we'll have bp_read_watchpoint | |
6773 | watchpoints with hw_access locations. Those should be considered | |
6774 | duplicates of hw_read locations. The hw_read locations will | |
6775 | become hw_access locations later. */ | |
2d134ed3 PA |
6776 | return (loc1->owner->type == loc2->owner->type |
6777 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6778 | && loc1->address == loc2->address | |
6779 | && loc1->length == loc2->length); | |
e4f237da KB |
6780 | } |
6781 | ||
31e77af2 | 6782 | /* See breakpoint.h. */ |
6c95b8df | 6783 | |
31e77af2 | 6784 | int |
accd0bcd YQ |
6785 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6786 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6787 | { |
f5656ead | 6788 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6789 | || aspace1 == aspace2) |
6790 | && addr1 == addr2); | |
6791 | } | |
6792 | ||
f1310107 TJB |
6793 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6794 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6795 | matches ASPACE2. On targets that have global breakpoints, the address | |
6796 | space doesn't really matter. */ | |
6797 | ||
6798 | static int | |
accd0bcd YQ |
6799 | breakpoint_address_match_range (const address_space *aspace1, |
6800 | CORE_ADDR addr1, | |
6801 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6802 | CORE_ADDR addr2) |
6803 | { | |
f5656ead | 6804 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6805 | || aspace1 == aspace2) |
6806 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6807 | } | |
6808 | ||
6809 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6810 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6811 | matches the breakpoint's address space. On targets that have global | |
6812 | breakpoints, the address space doesn't really matter. */ | |
6813 | ||
6814 | static int | |
6815 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6816 | const address_space *aspace, |
f1310107 TJB |
6817 | CORE_ADDR addr) |
6818 | { | |
6819 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6820 | aspace, addr) | |
6821 | || (bl->length | |
6822 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6823 | bl->address, bl->length, | |
6824 | aspace, addr))); | |
6825 | } | |
6826 | ||
d35ae833 PA |
6827 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6828 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6829 | match happens only if ASPACE matches the breakpoint's address | |
6830 | space. On targets that have global breakpoints, the address space | |
6831 | doesn't really matter. */ | |
6832 | ||
6833 | static int | |
6834 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6835 | const address_space *aspace, |
d35ae833 PA |
6836 | CORE_ADDR addr, int len) |
6837 | { | |
6838 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6839 | || bl->pspace->aspace == aspace) | |
6840 | { | |
6841 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6842 | ||
6843 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6844 | return 1; | |
6845 | } | |
6846 | return 0; | |
6847 | } | |
6848 | ||
1e4d1764 YQ |
6849 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6850 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6851 | true, otherwise returns false. */ | |
6852 | ||
6853 | static int | |
6854 | tracepoint_locations_match (struct bp_location *loc1, | |
6855 | struct bp_location *loc2) | |
6856 | { | |
6857 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6858 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6859 | locations at the same address of different tracepoints are regarded as | |
6860 | different locations. */ | |
6861 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6862 | else | |
6863 | return 0; | |
6864 | } | |
6865 | ||
2d134ed3 PA |
6866 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6867 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6868 | represent the same location. */ | |
6869 | ||
6870 | static int | |
4a64f543 MS |
6871 | breakpoint_locations_match (struct bp_location *loc1, |
6872 | struct bp_location *loc2) | |
2d134ed3 | 6873 | { |
2bdf28a0 JK |
6874 | int hw_point1, hw_point2; |
6875 | ||
6876 | /* Both of them must not be in moribund_locations. */ | |
6877 | gdb_assert (loc1->owner != NULL); | |
6878 | gdb_assert (loc2->owner != NULL); | |
6879 | ||
6880 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6881 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6882 | |
6883 | if (hw_point1 != hw_point2) | |
6884 | return 0; | |
6885 | else if (hw_point1) | |
6886 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6887 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6888 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6889 | else |
f1310107 TJB |
6890 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6891 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6892 | loc2->pspace->aspace, loc2->address) | |
6893 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6894 | } |
6895 | ||
76897487 KB |
6896 | static void |
6897 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6898 | int bnum, int have_bnum) | |
6899 | { | |
f63fbe86 MS |
6900 | /* The longest string possibly returned by hex_string_custom |
6901 | is 50 chars. These must be at least that big for safety. */ | |
6902 | char astr1[64]; | |
6903 | char astr2[64]; | |
76897487 | 6904 | |
bb599908 PH |
6905 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6906 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6907 | if (have_bnum) |
8a3fe4f8 | 6908 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6909 | bnum, astr1, astr2); |
6910 | else | |
8a3fe4f8 | 6911 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6912 | } |
6913 | ||
4a64f543 MS |
6914 | /* Adjust a breakpoint's address to account for architectural |
6915 | constraints on breakpoint placement. Return the adjusted address. | |
6916 | Note: Very few targets require this kind of adjustment. For most | |
6917 | targets, this function is simply the identity function. */ | |
76897487 KB |
6918 | |
6919 | static CORE_ADDR | |
a6d9a66e UW |
6920 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6921 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6922 | { |
a0de8c21 YQ |
6923 | if (bptype == bp_watchpoint |
6924 | || bptype == bp_hardware_watchpoint | |
6925 | || bptype == bp_read_watchpoint | |
6926 | || bptype == bp_access_watchpoint | |
6927 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6928 | { |
6929 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6930 | have their addresses modified. */ | |
6931 | return bpaddr; | |
6932 | } | |
7c16b83e PA |
6933 | else if (bptype == bp_single_step) |
6934 | { | |
6935 | /* Single-step breakpoints should not have their addresses | |
6936 | modified. If there's any architectural constrain that | |
6937 | applies to this address, then it should have already been | |
6938 | taken into account when the breakpoint was created in the | |
6939 | first place. If we didn't do this, stepping through e.g., | |
6940 | Thumb-2 IT blocks would break. */ | |
6941 | return bpaddr; | |
6942 | } | |
76897487 KB |
6943 | else |
6944 | { | |
a0de8c21 YQ |
6945 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6946 | ||
6947 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6948 | { | |
6949 | /* Some targets have architectural constraints on the placement | |
6950 | of breakpoint instructions. Obtain the adjusted address. */ | |
6951 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6952 | } | |
76897487 | 6953 | |
a0de8c21 | 6954 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6955 | |
6956 | /* An adjusted breakpoint address can significantly alter | |
6957 | a user's expectations. Print a warning if an adjustment | |
6958 | is required. */ | |
6959 | if (adjusted_bpaddr != bpaddr) | |
6960 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6961 | ||
6962 | return adjusted_bpaddr; | |
6963 | } | |
6964 | } | |
6965 | ||
5625a286 | 6966 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 6967 | { |
5625a286 | 6968 | bp_location *loc = this; |
7cc221ef | 6969 | |
348d480f PA |
6970 | gdb_assert (ops != NULL); |
6971 | ||
28010a5d PA |
6972 | loc->ops = ops; |
6973 | loc->owner = owner; | |
b775012e | 6974 | loc->cond_bytecode = NULL; |
0d381245 VP |
6975 | loc->shlib_disabled = 0; |
6976 | loc->enabled = 1; | |
e049a4b5 | 6977 | |
28010a5d | 6978 | switch (owner->type) |
e049a4b5 DJ |
6979 | { |
6980 | case bp_breakpoint: | |
7c16b83e | 6981 | case bp_single_step: |
e049a4b5 DJ |
6982 | case bp_until: |
6983 | case bp_finish: | |
6984 | case bp_longjmp: | |
6985 | case bp_longjmp_resume: | |
e2e4d78b | 6986 | case bp_longjmp_call_dummy: |
186c406b TT |
6987 | case bp_exception: |
6988 | case bp_exception_resume: | |
e049a4b5 | 6989 | case bp_step_resume: |
2c03e5be | 6990 | case bp_hp_step_resume: |
e049a4b5 DJ |
6991 | case bp_watchpoint_scope: |
6992 | case bp_call_dummy: | |
aa7d318d | 6993 | case bp_std_terminate: |
e049a4b5 DJ |
6994 | case bp_shlib_event: |
6995 | case bp_thread_event: | |
6996 | case bp_overlay_event: | |
4efc6507 | 6997 | case bp_jit_event: |
0fd8e87f | 6998 | case bp_longjmp_master: |
aa7d318d | 6999 | case bp_std_terminate_master: |
186c406b | 7000 | case bp_exception_master: |
0e30163f JK |
7001 | case bp_gnu_ifunc_resolver: |
7002 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7003 | case bp_dprintf: |
e049a4b5 | 7004 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7005 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7006 | break; |
7007 | case bp_hardware_breakpoint: | |
7008 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7009 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7010 | break; |
7011 | case bp_hardware_watchpoint: | |
7012 | case bp_read_watchpoint: | |
7013 | case bp_access_watchpoint: | |
7014 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7015 | break; | |
7016 | case bp_watchpoint: | |
ce78b96d | 7017 | case bp_catchpoint: |
15c3d785 PA |
7018 | case bp_tracepoint: |
7019 | case bp_fast_tracepoint: | |
0fb4aa4b | 7020 | case bp_static_tracepoint: |
e049a4b5 DJ |
7021 | loc->loc_type = bp_loc_other; |
7022 | break; | |
7023 | default: | |
e2e0b3e5 | 7024 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7025 | } |
7026 | ||
f431efe5 | 7027 | loc->refc = 1; |
28010a5d PA |
7028 | } |
7029 | ||
7030 | /* Allocate a struct bp_location. */ | |
7031 | ||
7032 | static struct bp_location * | |
7033 | allocate_bp_location (struct breakpoint *bpt) | |
7034 | { | |
348d480f PA |
7035 | return bpt->ops->allocate_location (bpt); |
7036 | } | |
7cc221ef | 7037 | |
f431efe5 PA |
7038 | static void |
7039 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7040 | { |
348d480f | 7041 | loc->ops->dtor (loc); |
4d01a485 | 7042 | delete loc; |
fe3f5fa8 VP |
7043 | } |
7044 | ||
f431efe5 PA |
7045 | /* Increment reference count. */ |
7046 | ||
7047 | static void | |
7048 | incref_bp_location (struct bp_location *bl) | |
7049 | { | |
7050 | ++bl->refc; | |
7051 | } | |
7052 | ||
7053 | /* Decrement reference count. If the reference count reaches 0, | |
7054 | destroy the bp_location. Sets *BLP to NULL. */ | |
7055 | ||
7056 | static void | |
7057 | decref_bp_location (struct bp_location **blp) | |
7058 | { | |
0807b50c PA |
7059 | gdb_assert ((*blp)->refc > 0); |
7060 | ||
f431efe5 PA |
7061 | if (--(*blp)->refc == 0) |
7062 | free_bp_location (*blp); | |
7063 | *blp = NULL; | |
7064 | } | |
7065 | ||
346774a9 | 7066 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7067 | |
b270e6f9 TT |
7068 | static breakpoint * |
7069 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7070 | { |
346774a9 | 7071 | struct breakpoint *b1; |
b270e6f9 | 7072 | struct breakpoint *result = b.get (); |
c906108c | 7073 | |
346774a9 PA |
7074 | /* Add this breakpoint to the end of the chain so that a list of |
7075 | breakpoints will come out in order of increasing numbers. */ | |
7076 | ||
7077 | b1 = breakpoint_chain; | |
7078 | if (b1 == 0) | |
b270e6f9 | 7079 | breakpoint_chain = b.release (); |
346774a9 PA |
7080 | else |
7081 | { | |
7082 | while (b1->next) | |
7083 | b1 = b1->next; | |
b270e6f9 | 7084 | b1->next = b.release (); |
346774a9 | 7085 | } |
b270e6f9 TT |
7086 | |
7087 | return result; | |
346774a9 PA |
7088 | } |
7089 | ||
7090 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7091 | ||
7092 | static void | |
7093 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7094 | struct gdbarch *gdbarch, | |
28010a5d | 7095 | enum bptype bptype, |
c0a91b2b | 7096 | const struct breakpoint_ops *ops) |
346774a9 | 7097 | { |
348d480f PA |
7098 | gdb_assert (ops != NULL); |
7099 | ||
28010a5d | 7100 | b->ops = ops; |
4d28f7a8 | 7101 | b->type = bptype; |
a6d9a66e | 7102 | b->gdbarch = gdbarch; |
c906108c SS |
7103 | b->language = current_language->la_language; |
7104 | b->input_radix = input_radix; | |
d0fb5eae | 7105 | b->related_breakpoint = b; |
346774a9 PA |
7106 | } |
7107 | ||
7108 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7109 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7110 | |
7111 | static struct breakpoint * | |
7112 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7113 | enum bptype bptype, |
c0a91b2b | 7114 | const struct breakpoint_ops *ops) |
346774a9 | 7115 | { |
3b0871f4 | 7116 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7117 | |
3b0871f4 | 7118 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7119 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7120 | } |
7121 | ||
0e30163f JK |
7122 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7123 | resolutions should be made as the user specified the location explicitly | |
7124 | enough. */ | |
7125 | ||
0d381245 | 7126 | static void |
0e30163f | 7127 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7128 | { |
2bdf28a0 JK |
7129 | gdb_assert (loc->owner != NULL); |
7130 | ||
0d381245 | 7131 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7132 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7133 | || is_tracepoint (loc->owner)) |
0d381245 | 7134 | { |
2c02bd72 | 7135 | const char *function_name; |
0e30163f | 7136 | |
3467ec66 | 7137 | if (loc->msymbol != NULL |
f50776aa PA |
7138 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
7139 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc) | |
3467ec66 | 7140 | && !explicit_loc) |
0e30163f JK |
7141 | { |
7142 | struct breakpoint *b = loc->owner; | |
7143 | ||
3467ec66 PA |
7144 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7145 | ||
7146 | if (b->type == bp_breakpoint && b->loc == loc | |
7147 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7148 | { |
7149 | /* Create only the whole new breakpoint of this type but do not | |
7150 | mess more complicated breakpoints with multiple locations. */ | |
7151 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7152 | /* Remember the resolver's address for use by the return |
7153 | breakpoint. */ | |
3467ec66 | 7154 | loc->related_address = loc->address; |
0e30163f JK |
7155 | } |
7156 | } | |
3467ec66 PA |
7157 | else |
7158 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7159 | |
2c02bd72 DE |
7160 | if (function_name) |
7161 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7162 | } |
7163 | } | |
7164 | ||
a6d9a66e | 7165 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7166 | struct gdbarch * |
a6d9a66e UW |
7167 | get_sal_arch (struct symtab_and_line sal) |
7168 | { | |
7169 | if (sal.section) | |
7170 | return get_objfile_arch (sal.section->objfile); | |
7171 | if (sal.symtab) | |
eb822aa6 | 7172 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7173 | |
7174 | return NULL; | |
7175 | } | |
7176 | ||
346774a9 PA |
7177 | /* Low level routine for partially initializing a breakpoint of type |
7178 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7179 | file name, and line number are provided by SAL. |
0d381245 VP |
7180 | |
7181 | It is expected that the caller will complete the initialization of | |
7182 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7183 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7184 | |
346774a9 PA |
7185 | static void |
7186 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7187 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7188 | const struct breakpoint_ops *ops) |
0d381245 | 7189 | { |
28010a5d | 7190 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7191 | |
3742cc8b | 7192 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7193 | |
6c95b8df PA |
7194 | if (bptype != bp_catchpoint) |
7195 | gdb_assert (sal.pspace != NULL); | |
7196 | ||
f8eba3c6 TT |
7197 | /* Store the program space that was used to set the breakpoint, |
7198 | except for ordinary breakpoints, which are independent of the | |
7199 | program space. */ | |
7200 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7201 | b->pspace = sal.pspace; | |
346774a9 | 7202 | } |
c906108c | 7203 | |
346774a9 PA |
7204 | /* set_raw_breakpoint is a low level routine for allocating and |
7205 | partially initializing a breakpoint of type BPTYPE. The newly | |
7206 | created breakpoint's address, section, source file name, and line | |
7207 | number are provided by SAL. The newly created and partially | |
7208 | initialized breakpoint is added to the breakpoint chain and | |
7209 | is also returned as the value of this function. | |
7210 | ||
7211 | It is expected that the caller will complete the initialization of | |
7212 | the newly created breakpoint struct as well as output any status | |
7213 | information regarding the creation of a new breakpoint. In | |
7214 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7215 | number! Care should be taken to not allow an error to occur | |
7216 | prior to completing the initialization of the breakpoint. If this | |
7217 | should happen, a bogus breakpoint will be left on the chain. */ | |
7218 | ||
7219 | struct breakpoint * | |
7220 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7221 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7222 | const struct breakpoint_ops *ops) |
346774a9 | 7223 | { |
3b0871f4 | 7224 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7225 | |
3b0871f4 | 7226 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7227 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7228 | } |
7229 | ||
53a5351d | 7230 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7231 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7232 | initiated the operation. */ | |
c906108c SS |
7233 | |
7234 | void | |
186c406b | 7235 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7236 | { |
35df4500 | 7237 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7238 | int thread = tp->global_num; |
0fd8e87f UW |
7239 | |
7240 | /* To avoid having to rescan all objfile symbols at every step, | |
7241 | we maintain a list of continually-inserted but always disabled | |
7242 | longjmp "master" breakpoints. Here, we simply create momentary | |
7243 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7244 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7245 | if (b->pspace == current_program_space |
186c406b TT |
7246 | && (b->type == bp_longjmp_master |
7247 | || b->type == bp_exception_master)) | |
0fd8e87f | 7248 | { |
06edf0c0 PA |
7249 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7250 | struct breakpoint *clone; | |
cc59ec59 | 7251 | |
e2e4d78b JK |
7252 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7253 | after their removal. */ | |
06edf0c0 | 7254 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7255 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7256 | clone->thread = thread; |
7257 | } | |
186c406b TT |
7258 | |
7259 | tp->initiating_frame = frame; | |
c906108c SS |
7260 | } |
7261 | ||
611c83ae | 7262 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7263 | void |
611c83ae | 7264 | delete_longjmp_breakpoint (int thread) |
c906108c | 7265 | { |
35df4500 | 7266 | struct breakpoint *b, *b_tmp; |
c906108c | 7267 | |
35df4500 | 7268 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7269 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7270 | { |
7271 | if (b->thread == thread) | |
7272 | delete_breakpoint (b); | |
7273 | } | |
c906108c SS |
7274 | } |
7275 | ||
f59f708a PA |
7276 | void |
7277 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7278 | { | |
7279 | struct breakpoint *b, *b_tmp; | |
7280 | ||
7281 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7282 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7283 | { | |
7284 | if (b->thread == thread) | |
7285 | b->disposition = disp_del_at_next_stop; | |
7286 | } | |
7287 | } | |
7288 | ||
e2e4d78b JK |
7289 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7290 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7291 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7292 | breakpoints. */ | |
7293 | ||
7294 | struct breakpoint * | |
7295 | set_longjmp_breakpoint_for_call_dummy (void) | |
7296 | { | |
7297 | struct breakpoint *b, *retval = NULL; | |
7298 | ||
7299 | ALL_BREAKPOINTS (b) | |
7300 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7301 | { | |
7302 | struct breakpoint *new_b; | |
7303 | ||
7304 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7305 | &momentary_breakpoint_ops, |
7306 | 1); | |
00431a78 | 7307 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7308 | |
7309 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7310 | ||
7311 | gdb_assert (new_b->related_breakpoint == new_b); | |
7312 | if (retval == NULL) | |
7313 | retval = new_b; | |
7314 | new_b->related_breakpoint = retval; | |
7315 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7316 | retval = retval->related_breakpoint; | |
7317 | retval->related_breakpoint = new_b; | |
7318 | } | |
7319 | ||
7320 | return retval; | |
7321 | } | |
7322 | ||
7323 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7324 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7325 | stack. |
7326 | ||
7327 | You should call this function only at places where it is safe to currently | |
7328 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7329 | frames. */ | |
7330 | ||
7331 | void | |
b67a2c6f | 7332 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7333 | { |
7334 | struct breakpoint *b, *b_tmp; | |
7335 | ||
7336 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7337 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7338 | { |
7339 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7340 | ||
7341 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7342 | dummy_b = dummy_b->related_breakpoint; | |
7343 | if (dummy_b->type != bp_call_dummy | |
7344 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7345 | continue; | |
7346 | ||
00431a78 | 7347 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7348 | |
7349 | while (b->related_breakpoint != b) | |
7350 | { | |
7351 | if (b_tmp == b->related_breakpoint) | |
7352 | b_tmp = b->related_breakpoint->next; | |
7353 | delete_breakpoint (b->related_breakpoint); | |
7354 | } | |
7355 | delete_breakpoint (b); | |
7356 | } | |
7357 | } | |
7358 | ||
1900040c MS |
7359 | void |
7360 | enable_overlay_breakpoints (void) | |
7361 | { | |
52f0bd74 | 7362 | struct breakpoint *b; |
1900040c MS |
7363 | |
7364 | ALL_BREAKPOINTS (b) | |
7365 | if (b->type == bp_overlay_event) | |
7366 | { | |
7367 | b->enable_state = bp_enabled; | |
44702360 | 7368 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7369 | overlay_events_enabled = 1; |
1900040c MS |
7370 | } |
7371 | } | |
7372 | ||
7373 | void | |
7374 | disable_overlay_breakpoints (void) | |
7375 | { | |
52f0bd74 | 7376 | struct breakpoint *b; |
1900040c MS |
7377 | |
7378 | ALL_BREAKPOINTS (b) | |
7379 | if (b->type == bp_overlay_event) | |
7380 | { | |
7381 | b->enable_state = bp_disabled; | |
44702360 | 7382 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7383 | overlay_events_enabled = 0; |
1900040c MS |
7384 | } |
7385 | } | |
7386 | ||
aa7d318d TT |
7387 | /* Set an active std::terminate breakpoint for each std::terminate |
7388 | master breakpoint. */ | |
7389 | void | |
7390 | set_std_terminate_breakpoint (void) | |
7391 | { | |
35df4500 | 7392 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7393 | |
35df4500 | 7394 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7395 | if (b->pspace == current_program_space |
7396 | && b->type == bp_std_terminate_master) | |
7397 | { | |
06edf0c0 | 7398 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7399 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7400 | } |
7401 | } | |
7402 | ||
7403 | /* Delete all the std::terminate breakpoints. */ | |
7404 | void | |
7405 | delete_std_terminate_breakpoint (void) | |
7406 | { | |
35df4500 | 7407 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7408 | |
35df4500 | 7409 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7410 | if (b->type == bp_std_terminate) |
7411 | delete_breakpoint (b); | |
7412 | } | |
7413 | ||
c4093a6a | 7414 | struct breakpoint * |
a6d9a66e | 7415 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7416 | { |
7417 | struct breakpoint *b; | |
c4093a6a | 7418 | |
06edf0c0 PA |
7419 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7420 | &internal_breakpoint_ops); | |
7421 | ||
b5de0fa7 | 7422 | b->enable_state = bp_enabled; |
f00aae0f | 7423 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7424 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7425 | |
44702360 | 7426 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7427 | |
c4093a6a JM |
7428 | return b; |
7429 | } | |
7430 | ||
0101ce28 JJ |
7431 | struct lang_and_radix |
7432 | { | |
7433 | enum language lang; | |
7434 | int radix; | |
7435 | }; | |
7436 | ||
4efc6507 DE |
7437 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7438 | ||
7439 | struct breakpoint * | |
7440 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7441 | { | |
2a7f3dff PA |
7442 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7443 | &internal_breakpoint_ops); | |
4efc6507 | 7444 | } |
0101ce28 | 7445 | |
03673fc7 PP |
7446 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7447 | ||
7448 | void | |
7449 | remove_jit_event_breakpoints (void) | |
7450 | { | |
7451 | struct breakpoint *b, *b_tmp; | |
7452 | ||
7453 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7454 | if (b->type == bp_jit_event | |
7455 | && b->loc->pspace == current_program_space) | |
7456 | delete_breakpoint (b); | |
7457 | } | |
7458 | ||
cae688ec JJ |
7459 | void |
7460 | remove_solib_event_breakpoints (void) | |
7461 | { | |
35df4500 | 7462 | struct breakpoint *b, *b_tmp; |
cae688ec | 7463 | |
35df4500 | 7464 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7465 | if (b->type == bp_shlib_event |
7466 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7467 | delete_breakpoint (b); |
7468 | } | |
7469 | ||
f37f681c PA |
7470 | /* See breakpoint.h. */ |
7471 | ||
7472 | void | |
7473 | remove_solib_event_breakpoints_at_next_stop (void) | |
7474 | { | |
7475 | struct breakpoint *b, *b_tmp; | |
7476 | ||
7477 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7478 | if (b->type == bp_shlib_event | |
7479 | && b->loc->pspace == current_program_space) | |
7480 | b->disposition = disp_del_at_next_stop; | |
7481 | } | |
7482 | ||
04086b45 PA |
7483 | /* Helper for create_solib_event_breakpoint / |
7484 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7485 | INSERT_MODE to pass through to update_global_location_list. */ | |
7486 | ||
7487 | static struct breakpoint * | |
7488 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7489 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7490 | { |
7491 | struct breakpoint *b; | |
7492 | ||
06edf0c0 PA |
7493 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7494 | &internal_breakpoint_ops); | |
04086b45 | 7495 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7496 | return b; |
7497 | } | |
7498 | ||
04086b45 PA |
7499 | struct breakpoint * |
7500 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7501 | { | |
7502 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7503 | } | |
7504 | ||
f37f681c PA |
7505 | /* See breakpoint.h. */ |
7506 | ||
7507 | struct breakpoint * | |
7508 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7509 | { | |
7510 | struct breakpoint *b; | |
7511 | ||
04086b45 PA |
7512 | /* Explicitly tell update_global_location_list to insert |
7513 | locations. */ | |
7514 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7515 | if (!b->loc->inserted) |
7516 | { | |
7517 | delete_breakpoint (b); | |
7518 | return NULL; | |
7519 | } | |
7520 | return b; | |
7521 | } | |
7522 | ||
cae688ec JJ |
7523 | /* Disable any breakpoints that are on code in shared libraries. Only |
7524 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7525 | ||
7526 | void | |
cb851954 | 7527 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7528 | { |
876fa593 | 7529 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7530 | |
876fa593 | 7531 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7532 | { |
2bdf28a0 | 7533 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7534 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7535 | |
4a64f543 MS |
7536 | /* We apply the check to all breakpoints, including disabled for |
7537 | those with loc->duplicate set. This is so that when breakpoint | |
7538 | becomes enabled, or the duplicate is removed, gdb will try to | |
7539 | insert all breakpoints. If we don't set shlib_disabled here, | |
7540 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7541 | if (((b->type == bp_breakpoint) |
508ccb1f | 7542 | || (b->type == bp_jit_event) |
1042e4c0 | 7543 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7544 | || (is_tracepoint (b))) |
6c95b8df | 7545 | && loc->pspace == current_program_space |
0d381245 | 7546 | && !loc->shlib_disabled |
6c95b8df | 7547 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7548 | ) |
0d381245 VP |
7549 | { |
7550 | loc->shlib_disabled = 1; | |
7551 | } | |
cae688ec JJ |
7552 | } |
7553 | } | |
7554 | ||
63644780 NB |
7555 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7556 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7557 | disabled ones can just stay disabled. */ | |
84acb35a | 7558 | |
75149521 | 7559 | static void |
84acb35a JJ |
7560 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7561 | { | |
876fa593 | 7562 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7563 | int disabled_shlib_breaks = 0; |
7564 | ||
876fa593 | 7565 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7566 | { |
2bdf28a0 | 7567 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7568 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7569 | |
1e4d1764 | 7570 | if (solib->pspace == loc->pspace |
e2dd7057 | 7571 | && !loc->shlib_disabled |
1e4d1764 YQ |
7572 | && (((b->type == bp_breakpoint |
7573 | || b->type == bp_jit_event | |
7574 | || b->type == bp_hardware_breakpoint) | |
7575 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7576 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7577 | || is_tracepoint (b)) | |
e2dd7057 | 7578 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7579 | { |
e2dd7057 PP |
7580 | loc->shlib_disabled = 1; |
7581 | /* At this point, we cannot rely on remove_breakpoint | |
7582 | succeeding so we must mark the breakpoint as not inserted | |
7583 | to prevent future errors occurring in remove_breakpoints. */ | |
7584 | loc->inserted = 0; | |
8d3788bd VP |
7585 | |
7586 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7587 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7588 | |
e2dd7057 PP |
7589 | if (!disabled_shlib_breaks) |
7590 | { | |
223ffa71 | 7591 | target_terminal::ours_for_output (); |
3e43a32a MS |
7592 | warning (_("Temporarily disabling breakpoints " |
7593 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7594 | solib->so_name); |
84acb35a | 7595 | } |
e2dd7057 | 7596 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7597 | } |
7598 | } | |
84acb35a JJ |
7599 | } |
7600 | ||
63644780 NB |
7601 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7602 | notification of free_objfile. Only apply to enabled breakpoints, | |
7603 | disabled ones can just stay disabled. */ | |
7604 | ||
7605 | static void | |
7606 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7607 | { | |
7608 | struct breakpoint *b; | |
7609 | ||
7610 | if (objfile == NULL) | |
7611 | return; | |
7612 | ||
d03de421 PA |
7613 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7614 | managed by the user with add-symbol-file/remove-symbol-file. | |
7615 | Similarly to how breakpoints in shared libraries are handled in | |
7616 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7617 | shlib_disabled so they end up uninserted on the next global |
7618 | location list update. Shared libraries not loaded by the user | |
7619 | aren't handled here -- they're already handled in | |
7620 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7621 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7622 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7623 | main objfile). */ | |
7624 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7625 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7626 | return; |
7627 | ||
7628 | ALL_BREAKPOINTS (b) | |
7629 | { | |
7630 | struct bp_location *loc; | |
7631 | int bp_modified = 0; | |
7632 | ||
7633 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7634 | continue; | |
7635 | ||
7636 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7637 | { | |
7638 | CORE_ADDR loc_addr = loc->address; | |
7639 | ||
7640 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7641 | && loc->loc_type != bp_loc_software_breakpoint) | |
7642 | continue; | |
7643 | ||
7644 | if (loc->shlib_disabled != 0) | |
7645 | continue; | |
7646 | ||
7647 | if (objfile->pspace != loc->pspace) | |
7648 | continue; | |
7649 | ||
7650 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7651 | && loc->loc_type != bp_loc_software_breakpoint) | |
7652 | continue; | |
7653 | ||
7654 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7655 | { | |
7656 | loc->shlib_disabled = 1; | |
08351840 PA |
7657 | /* At this point, we don't know whether the object was |
7658 | unmapped from the inferior or not, so leave the | |
7659 | inserted flag alone. We'll handle failure to | |
7660 | uninsert quietly, in case the object was indeed | |
7661 | unmapped. */ | |
63644780 NB |
7662 | |
7663 | mark_breakpoint_location_modified (loc); | |
7664 | ||
7665 | bp_modified = 1; | |
7666 | } | |
7667 | } | |
7668 | ||
7669 | if (bp_modified) | |
76727919 | 7670 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7671 | } |
7672 | } | |
7673 | ||
ce78b96d JB |
7674 | /* FORK & VFORK catchpoints. */ |
7675 | ||
e29a4733 | 7676 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7677 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7678 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7679 | |
c1fc2657 | 7680 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7681 | { |
e29a4733 PA |
7682 | /* Process id of a child process whose forking triggered this |
7683 | catchpoint. This field is only valid immediately after this | |
7684 | catchpoint has triggered. */ | |
7685 | ptid_t forked_inferior_pid; | |
7686 | }; | |
7687 | ||
4a64f543 MS |
7688 | /* Implement the "insert" breakpoint_ops method for fork |
7689 | catchpoints. */ | |
ce78b96d | 7690 | |
77b06cd7 TJB |
7691 | static int |
7692 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7693 | { |
e99b03dc | 7694 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7695 | } |
7696 | ||
4a64f543 MS |
7697 | /* Implement the "remove" breakpoint_ops method for fork |
7698 | catchpoints. */ | |
ce78b96d JB |
7699 | |
7700 | static int | |
73971819 | 7701 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7702 | { |
e99b03dc | 7703 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7704 | } |
7705 | ||
7706 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7707 | catchpoints. */ | |
7708 | ||
7709 | static int | |
f1310107 | 7710 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7711 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7712 | const struct target_waitstatus *ws) |
ce78b96d | 7713 | { |
e29a4733 PA |
7714 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7715 | ||
f90263c1 TT |
7716 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7717 | return 0; | |
7718 | ||
7719 | c->forked_inferior_pid = ws->value.related_pid; | |
7720 | return 1; | |
ce78b96d JB |
7721 | } |
7722 | ||
4a64f543 MS |
7723 | /* Implement the "print_it" breakpoint_ops method for fork |
7724 | catchpoints. */ | |
ce78b96d JB |
7725 | |
7726 | static enum print_stop_action | |
348d480f | 7727 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7728 | { |
36dfb11c | 7729 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7730 | struct breakpoint *b = bs->breakpoint_at; |
7731 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7732 | |
ce78b96d | 7733 | annotate_catchpoint (b->number); |
f303dbd6 | 7734 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7735 | if (b->disposition == disp_del) |
112e8700 | 7736 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7737 | else |
112e8700 SM |
7738 | uiout->text ("Catchpoint "); |
7739 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7740 | { |
112e8700 SM |
7741 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7742 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7743 | } |
112e8700 SM |
7744 | uiout->field_int ("bkptno", b->number); |
7745 | uiout->text (" (forked process "); | |
e99b03dc | 7746 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7747 | uiout->text ("), "); |
ce78b96d JB |
7748 | return PRINT_SRC_AND_LOC; |
7749 | } | |
7750 | ||
4a64f543 MS |
7751 | /* Implement the "print_one" breakpoint_ops method for fork |
7752 | catchpoints. */ | |
ce78b96d JB |
7753 | |
7754 | static void | |
a6d9a66e | 7755 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7756 | { |
e29a4733 | 7757 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7758 | struct value_print_options opts; |
79a45e25 | 7759 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7760 | |
7761 | get_user_print_options (&opts); | |
7762 | ||
4a64f543 MS |
7763 | /* Field 4, the address, is omitted (which makes the columns not |
7764 | line up too nicely with the headers, but the effect is relatively | |
7765 | readable). */ | |
79a45b7d | 7766 | if (opts.addressprint) |
112e8700 | 7767 | uiout->field_skip ("addr"); |
ce78b96d | 7768 | annotate_field (5); |
112e8700 | 7769 | uiout->text ("fork"); |
d7e15655 | 7770 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7771 | { |
112e8700 | 7772 | uiout->text (", process "); |
e99b03dc | 7773 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7774 | uiout->spaces (1); |
ce78b96d | 7775 | } |
8ac3646f | 7776 | |
112e8700 SM |
7777 | if (uiout->is_mi_like_p ()) |
7778 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7779 | } |
7780 | ||
7781 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7782 | catchpoints. */ | |
7783 | ||
7784 | static void | |
7785 | print_mention_catch_fork (struct breakpoint *b) | |
7786 | { | |
7787 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7788 | } | |
7789 | ||
6149aea9 PA |
7790 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7791 | catchpoints. */ | |
7792 | ||
7793 | static void | |
7794 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7795 | { | |
7796 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7797 | print_recreate_thread (b, fp); |
6149aea9 PA |
7798 | } |
7799 | ||
ce78b96d JB |
7800 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7801 | ||
2060206e | 7802 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7803 | |
4a64f543 MS |
7804 | /* Implement the "insert" breakpoint_ops method for vfork |
7805 | catchpoints. */ | |
ce78b96d | 7806 | |
77b06cd7 TJB |
7807 | static int |
7808 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7809 | { |
e99b03dc | 7810 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7811 | } |
7812 | ||
4a64f543 MS |
7813 | /* Implement the "remove" breakpoint_ops method for vfork |
7814 | catchpoints. */ | |
ce78b96d JB |
7815 | |
7816 | static int | |
73971819 | 7817 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7818 | { |
e99b03dc | 7819 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7820 | } |
7821 | ||
7822 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7823 | catchpoints. */ | |
7824 | ||
7825 | static int | |
f1310107 | 7826 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7827 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7828 | const struct target_waitstatus *ws) |
ce78b96d | 7829 | { |
e29a4733 PA |
7830 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7831 | ||
f90263c1 TT |
7832 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7833 | return 0; | |
7834 | ||
7835 | c->forked_inferior_pid = ws->value.related_pid; | |
7836 | return 1; | |
ce78b96d JB |
7837 | } |
7838 | ||
4a64f543 MS |
7839 | /* Implement the "print_it" breakpoint_ops method for vfork |
7840 | catchpoints. */ | |
ce78b96d JB |
7841 | |
7842 | static enum print_stop_action | |
348d480f | 7843 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7844 | { |
36dfb11c | 7845 | struct ui_out *uiout = current_uiout; |
348d480f | 7846 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7847 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7848 | ||
ce78b96d | 7849 | annotate_catchpoint (b->number); |
f303dbd6 | 7850 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7851 | if (b->disposition == disp_del) |
112e8700 | 7852 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7853 | else |
112e8700 SM |
7854 | uiout->text ("Catchpoint "); |
7855 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7856 | { |
112e8700 SM |
7857 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7858 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7859 | } |
112e8700 SM |
7860 | uiout->field_int ("bkptno", b->number); |
7861 | uiout->text (" (vforked process "); | |
e99b03dc | 7862 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7863 | uiout->text ("), "); |
ce78b96d JB |
7864 | return PRINT_SRC_AND_LOC; |
7865 | } | |
7866 | ||
4a64f543 MS |
7867 | /* Implement the "print_one" breakpoint_ops method for vfork |
7868 | catchpoints. */ | |
ce78b96d JB |
7869 | |
7870 | static void | |
a6d9a66e | 7871 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7872 | { |
e29a4733 | 7873 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7874 | struct value_print_options opts; |
79a45e25 | 7875 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7876 | |
7877 | get_user_print_options (&opts); | |
4a64f543 MS |
7878 | /* Field 4, the address, is omitted (which makes the columns not |
7879 | line up too nicely with the headers, but the effect is relatively | |
7880 | readable). */ | |
79a45b7d | 7881 | if (opts.addressprint) |
112e8700 | 7882 | uiout->field_skip ("addr"); |
ce78b96d | 7883 | annotate_field (5); |
112e8700 | 7884 | uiout->text ("vfork"); |
d7e15655 | 7885 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7886 | { |
112e8700 | 7887 | uiout->text (", process "); |
e99b03dc | 7888 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7889 | uiout->spaces (1); |
ce78b96d | 7890 | } |
8ac3646f | 7891 | |
112e8700 SM |
7892 | if (uiout->is_mi_like_p ()) |
7893 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7894 | } |
7895 | ||
7896 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7897 | catchpoints. */ | |
7898 | ||
7899 | static void | |
7900 | print_mention_catch_vfork (struct breakpoint *b) | |
7901 | { | |
7902 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7903 | } | |
7904 | ||
6149aea9 PA |
7905 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7906 | catchpoints. */ | |
7907 | ||
7908 | static void | |
7909 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7910 | { | |
7911 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7912 | print_recreate_thread (b, fp); |
6149aea9 PA |
7913 | } |
7914 | ||
ce78b96d JB |
7915 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7916 | ||
2060206e | 7917 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7918 | |
edcc5120 | 7919 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7920 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7921 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7922 | ||
c1fc2657 | 7923 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7924 | { |
c1fc2657 | 7925 | ~solib_catchpoint () override; |
edcc5120 TT |
7926 | |
7927 | /* True for "catch load", false for "catch unload". */ | |
7928 | unsigned char is_load; | |
7929 | ||
7930 | /* Regular expression to match, if any. COMPILED is only valid when | |
7931 | REGEX is non-NULL. */ | |
7932 | char *regex; | |
2d7cc5c7 | 7933 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7934 | }; |
7935 | ||
c1fc2657 | 7936 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7937 | { |
c1fc2657 | 7938 | xfree (this->regex); |
edcc5120 TT |
7939 | } |
7940 | ||
7941 | static int | |
7942 | insert_catch_solib (struct bp_location *ignore) | |
7943 | { | |
7944 | return 0; | |
7945 | } | |
7946 | ||
7947 | static int | |
73971819 | 7948 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7949 | { |
7950 | return 0; | |
7951 | } | |
7952 | ||
7953 | static int | |
7954 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7955 | const address_space *aspace, |
edcc5120 TT |
7956 | CORE_ADDR bp_addr, |
7957 | const struct target_waitstatus *ws) | |
7958 | { | |
7959 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7960 | struct breakpoint *other; | |
7961 | ||
7962 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7963 | return 1; | |
7964 | ||
7965 | ALL_BREAKPOINTS (other) | |
7966 | { | |
7967 | struct bp_location *other_bl; | |
7968 | ||
7969 | if (other == bl->owner) | |
7970 | continue; | |
7971 | ||
7972 | if (other->type != bp_shlib_event) | |
7973 | continue; | |
7974 | ||
c1fc2657 | 7975 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7976 | continue; |
7977 | ||
7978 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7979 | { | |
7980 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7981 | return 1; | |
7982 | } | |
7983 | } | |
7984 | ||
7985 | return 0; | |
7986 | } | |
7987 | ||
7988 | static void | |
7989 | check_status_catch_solib (struct bpstats *bs) | |
7990 | { | |
7991 | struct solib_catchpoint *self | |
7992 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7993 | |
7994 | if (self->is_load) | |
7995 | { | |
52941706 | 7996 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7997 | { |
7998 | if (!self->regex | |
2d7cc5c7 | 7999 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8000 | return; |
8001 | } | |
8002 | } | |
8003 | else | |
8004 | { | |
6fb16ce6 | 8005 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8006 | { |
8007 | if (!self->regex | |
6fb16ce6 | 8008 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8009 | return; |
8010 | } | |
8011 | } | |
8012 | ||
8013 | bs->stop = 0; | |
8014 | bs->print_it = print_it_noop; | |
8015 | } | |
8016 | ||
8017 | static enum print_stop_action | |
8018 | print_it_catch_solib (bpstat bs) | |
8019 | { | |
8020 | struct breakpoint *b = bs->breakpoint_at; | |
8021 | struct ui_out *uiout = current_uiout; | |
8022 | ||
8023 | annotate_catchpoint (b->number); | |
f303dbd6 | 8024 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8025 | if (b->disposition == disp_del) |
112e8700 | 8026 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8027 | else |
112e8700 SM |
8028 | uiout->text ("Catchpoint "); |
8029 | uiout->field_int ("bkptno", b->number); | |
8030 | uiout->text ("\n"); | |
8031 | if (uiout->is_mi_like_p ()) | |
8032 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8033 | print_solib_event (1); |
8034 | return PRINT_SRC_AND_LOC; | |
8035 | } | |
8036 | ||
8037 | static void | |
8038 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8039 | { | |
8040 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8041 | struct value_print_options opts; | |
8042 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8043 | |
8044 | get_user_print_options (&opts); | |
8045 | /* Field 4, the address, is omitted (which makes the columns not | |
8046 | line up too nicely with the headers, but the effect is relatively | |
8047 | readable). */ | |
8048 | if (opts.addressprint) | |
8049 | { | |
8050 | annotate_field (4); | |
112e8700 | 8051 | uiout->field_skip ("addr"); |
edcc5120 TT |
8052 | } |
8053 | ||
528e1572 | 8054 | std::string msg; |
edcc5120 TT |
8055 | annotate_field (5); |
8056 | if (self->is_load) | |
8057 | { | |
8058 | if (self->regex) | |
528e1572 | 8059 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8060 | else |
528e1572 | 8061 | msg = _("load of library"); |
edcc5120 TT |
8062 | } |
8063 | else | |
8064 | { | |
8065 | if (self->regex) | |
528e1572 | 8066 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8067 | else |
528e1572 | 8068 | msg = _("unload of library"); |
edcc5120 | 8069 | } |
112e8700 | 8070 | uiout->field_string ("what", msg); |
8ac3646f | 8071 | |
112e8700 SM |
8072 | if (uiout->is_mi_like_p ()) |
8073 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8074 | } |
8075 | ||
8076 | static void | |
8077 | print_mention_catch_solib (struct breakpoint *b) | |
8078 | { | |
8079 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8080 | ||
8081 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8082 | self->is_load ? "load" : "unload"); | |
8083 | } | |
8084 | ||
8085 | static void | |
8086 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8087 | { | |
8088 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8089 | ||
8090 | fprintf_unfiltered (fp, "%s %s", | |
8091 | b->disposition == disp_del ? "tcatch" : "catch", | |
8092 | self->is_load ? "load" : "unload"); | |
8093 | if (self->regex) | |
8094 | fprintf_unfiltered (fp, " %s", self->regex); | |
8095 | fprintf_unfiltered (fp, "\n"); | |
8096 | } | |
8097 | ||
8098 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8099 | ||
91985142 MG |
8100 | /* Shared helper function (MI and CLI) for creating and installing |
8101 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8102 | the events to be caught are load events, otherwise they are | |
8103 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8104 | temporary one. If ENABLED is non-zero the catchpoint is | |
8105 | created in an enabled state. */ | |
edcc5120 | 8106 | |
91985142 | 8107 | void |
a121b7c1 | 8108 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8109 | { |
edcc5120 | 8110 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8111 | |
edcc5120 TT |
8112 | if (!arg) |
8113 | arg = ""; | |
f1735a53 | 8114 | arg = skip_spaces (arg); |
edcc5120 | 8115 | |
36bd8eaa | 8116 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8117 | |
8118 | if (*arg != '\0') | |
8119 | { | |
2d7cc5c7 PA |
8120 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8121 | _("Invalid regexp"))); | |
edcc5120 TT |
8122 | c->regex = xstrdup (arg); |
8123 | } | |
8124 | ||
8125 | c->is_load = is_load; | |
36bd8eaa | 8126 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8127 | &catch_solib_breakpoint_ops); |
8128 | ||
c1fc2657 | 8129 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8130 | |
b270e6f9 | 8131 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8132 | } |
8133 | ||
91985142 MG |
8134 | /* A helper function that does all the work for "catch load" and |
8135 | "catch unload". */ | |
8136 | ||
8137 | static void | |
eb4c3f4a | 8138 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8139 | struct cmd_list_element *command) |
8140 | { | |
8141 | int tempflag; | |
8142 | const int enabled = 1; | |
8143 | ||
8144 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8145 | ||
8146 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8147 | } | |
8148 | ||
edcc5120 | 8149 | static void |
eb4c3f4a | 8150 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8151 | struct cmd_list_element *command) |
8152 | { | |
8153 | catch_load_or_unload (arg, from_tty, 1, command); | |
8154 | } | |
8155 | ||
8156 | static void | |
eb4c3f4a | 8157 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8158 | struct cmd_list_element *command) |
8159 | { | |
8160 | catch_load_or_unload (arg, from_tty, 0, command); | |
8161 | } | |
8162 | ||
346774a9 PA |
8163 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8164 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8165 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8166 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8167 | |
ab04a2af | 8168 | void |
346774a9 PA |
8169 | init_catchpoint (struct breakpoint *b, |
8170 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8171 | const char *cond_string, |
c0a91b2b | 8172 | const struct breakpoint_ops *ops) |
c906108c | 8173 | { |
51abb421 | 8174 | symtab_and_line sal; |
6c95b8df | 8175 | sal.pspace = current_program_space; |
c5aa993b | 8176 | |
28010a5d | 8177 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8178 | |
1b36a34b | 8179 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8180 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8181 | } |
8182 | ||
28010a5d | 8183 | void |
b270e6f9 | 8184 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8185 | { |
b270e6f9 | 8186 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8187 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8188 | if (is_tracepoint (b)) |
8189 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8190 | if (!internal) |
8191 | mention (b); | |
76727919 | 8192 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8193 | |
8194 | if (update_gll) | |
44702360 | 8195 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8196 | } |
8197 | ||
9b70b993 | 8198 | static void |
a6d9a66e | 8199 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8200 | int tempflag, const char *cond_string, |
c0a91b2b | 8201 | const struct breakpoint_ops *ops) |
c906108c | 8202 | { |
b270e6f9 | 8203 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8204 | |
b270e6f9 | 8205 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8206 | |
8207 | c->forked_inferior_pid = null_ptid; | |
8208 | ||
b270e6f9 | 8209 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8210 | } |
8211 | ||
fe798b75 JB |
8212 | /* Exec catchpoints. */ |
8213 | ||
b4d90040 | 8214 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8215 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8216 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8217 | ||
c1fc2657 | 8218 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8219 | { |
c1fc2657 | 8220 | ~exec_catchpoint () override; |
b4d90040 PA |
8221 | |
8222 | /* Filename of a program whose exec triggered this catchpoint. | |
8223 | This field is only valid immediately after this catchpoint has | |
8224 | triggered. */ | |
8225 | char *exec_pathname; | |
8226 | }; | |
8227 | ||
c1fc2657 | 8228 | /* Exec catchpoint destructor. */ |
b4d90040 | 8229 | |
c1fc2657 | 8230 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8231 | { |
c1fc2657 | 8232 | xfree (this->exec_pathname); |
b4d90040 PA |
8233 | } |
8234 | ||
77b06cd7 TJB |
8235 | static int |
8236 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8237 | { |
e99b03dc | 8238 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8239 | } |
c906108c | 8240 | |
fe798b75 | 8241 | static int |
73971819 | 8242 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8243 | { |
e99b03dc | 8244 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8245 | } |
c906108c | 8246 | |
fe798b75 | 8247 | static int |
f1310107 | 8248 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8249 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8250 | const struct target_waitstatus *ws) |
fe798b75 | 8251 | { |
b4d90040 PA |
8252 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8253 | ||
f90263c1 TT |
8254 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8255 | return 0; | |
8256 | ||
8257 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8258 | return 1; | |
fe798b75 | 8259 | } |
c906108c | 8260 | |
fe798b75 | 8261 | static enum print_stop_action |
348d480f | 8262 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8263 | { |
36dfb11c | 8264 | struct ui_out *uiout = current_uiout; |
348d480f | 8265 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8266 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8267 | ||
fe798b75 | 8268 | annotate_catchpoint (b->number); |
f303dbd6 | 8269 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8270 | if (b->disposition == disp_del) |
112e8700 | 8271 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8272 | else |
112e8700 SM |
8273 | uiout->text ("Catchpoint "); |
8274 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8275 | { |
112e8700 SM |
8276 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8277 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8278 | } |
112e8700 SM |
8279 | uiout->field_int ("bkptno", b->number); |
8280 | uiout->text (" (exec'd "); | |
8281 | uiout->field_string ("new-exec", c->exec_pathname); | |
8282 | uiout->text ("), "); | |
36dfb11c | 8283 | |
fe798b75 | 8284 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8285 | } |
8286 | ||
fe798b75 | 8287 | static void |
a6d9a66e | 8288 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8289 | { |
b4d90040 | 8290 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8291 | struct value_print_options opts; |
79a45e25 | 8292 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8293 | |
8294 | get_user_print_options (&opts); | |
8295 | ||
8296 | /* Field 4, the address, is omitted (which makes the columns | |
8297 | not line up too nicely with the headers, but the effect | |
8298 | is relatively readable). */ | |
8299 | if (opts.addressprint) | |
112e8700 | 8300 | uiout->field_skip ("addr"); |
fe798b75 | 8301 | annotate_field (5); |
112e8700 | 8302 | uiout->text ("exec"); |
b4d90040 | 8303 | if (c->exec_pathname != NULL) |
fe798b75 | 8304 | { |
112e8700 SM |
8305 | uiout->text (", program \""); |
8306 | uiout->field_string ("what", c->exec_pathname); | |
8307 | uiout->text ("\" "); | |
fe798b75 | 8308 | } |
8ac3646f | 8309 | |
112e8700 SM |
8310 | if (uiout->is_mi_like_p ()) |
8311 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8312 | } |
8313 | ||
8314 | static void | |
8315 | print_mention_catch_exec (struct breakpoint *b) | |
8316 | { | |
8317 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8318 | } | |
8319 | ||
6149aea9 PA |
8320 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8321 | catchpoints. */ | |
8322 | ||
8323 | static void | |
8324 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8325 | { | |
8326 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8327 | print_recreate_thread (b, fp); |
6149aea9 PA |
8328 | } |
8329 | ||
2060206e | 8330 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8331 | |
c906108c | 8332 | static int |
fba45db2 | 8333 | hw_breakpoint_used_count (void) |
c906108c | 8334 | { |
c906108c | 8335 | int i = 0; |
f1310107 TJB |
8336 | struct breakpoint *b; |
8337 | struct bp_location *bl; | |
c906108c SS |
8338 | |
8339 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8340 | { |
d6b74ac4 | 8341 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8342 | for (bl = b->loc; bl; bl = bl->next) |
8343 | { | |
8344 | /* Special types of hardware breakpoints may use more than | |
8345 | one register. */ | |
348d480f | 8346 | i += b->ops->resources_needed (bl); |
f1310107 | 8347 | } |
c5aa993b | 8348 | } |
c906108c SS |
8349 | |
8350 | return i; | |
8351 | } | |
8352 | ||
a1398e0c PA |
8353 | /* Returns the resources B would use if it were a hardware |
8354 | watchpoint. */ | |
8355 | ||
c906108c | 8356 | static int |
a1398e0c | 8357 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8358 | { |
c906108c | 8359 | int i = 0; |
e09342b5 | 8360 | struct bp_location *bl; |
c906108c | 8361 | |
a1398e0c PA |
8362 | if (!breakpoint_enabled (b)) |
8363 | return 0; | |
8364 | ||
8365 | for (bl = b->loc; bl; bl = bl->next) | |
8366 | { | |
8367 | /* Special types of hardware watchpoints may use more than | |
8368 | one register. */ | |
8369 | i += b->ops->resources_needed (bl); | |
8370 | } | |
8371 | ||
8372 | return i; | |
8373 | } | |
8374 | ||
8375 | /* Returns the sum the used resources of all hardware watchpoints of | |
8376 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8377 | the sum of the used resources of all hardware watchpoints of other | |
8378 | types _not_ TYPE. */ | |
8379 | ||
8380 | static int | |
8381 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8382 | enum bptype type, int *other_type_used) | |
8383 | { | |
8384 | int i = 0; | |
8385 | struct breakpoint *b; | |
8386 | ||
c906108c SS |
8387 | *other_type_used = 0; |
8388 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8389 | { |
a1398e0c PA |
8390 | if (b == except) |
8391 | continue; | |
e09342b5 TJB |
8392 | if (!breakpoint_enabled (b)) |
8393 | continue; | |
8394 | ||
a1398e0c PA |
8395 | if (b->type == type) |
8396 | i += hw_watchpoint_use_count (b); | |
8397 | else if (is_hardware_watchpoint (b)) | |
8398 | *other_type_used = 1; | |
e09342b5 TJB |
8399 | } |
8400 | ||
c906108c SS |
8401 | return i; |
8402 | } | |
8403 | ||
c906108c | 8404 | void |
fba45db2 | 8405 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8406 | { |
c5aa993b | 8407 | struct breakpoint *b; |
c906108c SS |
8408 | |
8409 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8410 | { |
cc60f2e3 | 8411 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8412 | { |
b5de0fa7 | 8413 | b->enable_state = bp_call_disabled; |
44702360 | 8414 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8415 | } |
8416 | } | |
c906108c SS |
8417 | } |
8418 | ||
8419 | void | |
fba45db2 | 8420 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8421 | { |
c5aa993b | 8422 | struct breakpoint *b; |
c906108c SS |
8423 | |
8424 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8425 | { |
cc60f2e3 | 8426 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8427 | { |
b5de0fa7 | 8428 | b->enable_state = bp_enabled; |
44702360 | 8429 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8430 | } |
8431 | } | |
c906108c SS |
8432 | } |
8433 | ||
8bea4e01 UW |
8434 | void |
8435 | disable_breakpoints_before_startup (void) | |
8436 | { | |
6c95b8df | 8437 | current_program_space->executing_startup = 1; |
44702360 | 8438 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8439 | } |
8440 | ||
8441 | void | |
8442 | enable_breakpoints_after_startup (void) | |
8443 | { | |
6c95b8df | 8444 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8445 | breakpoint_re_set (); |
8bea4e01 UW |
8446 | } |
8447 | ||
7c16b83e PA |
8448 | /* Create a new single-step breakpoint for thread THREAD, with no |
8449 | locations. */ | |
c906108c | 8450 | |
7c16b83e PA |
8451 | static struct breakpoint * |
8452 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8453 | { | |
b270e6f9 | 8454 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8455 | |
b270e6f9 | 8456 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8457 | &momentary_breakpoint_ops); |
8458 | ||
8459 | b->disposition = disp_donttouch; | |
8460 | b->frame_id = null_frame_id; | |
8461 | ||
8462 | b->thread = thread; | |
8463 | gdb_assert (b->thread != 0); | |
8464 | ||
b270e6f9 | 8465 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8466 | } |
8467 | ||
8468 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8469 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8470 | frame. */ | |
c906108c | 8471 | |
454dafbd | 8472 | breakpoint_up |
a6d9a66e UW |
8473 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8474 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8475 | { |
52f0bd74 | 8476 | struct breakpoint *b; |
edb3359d | 8477 | |
193facb3 JK |
8478 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8479 | tail-called one. */ | |
8480 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8481 | |
06edf0c0 | 8482 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8483 | b->enable_state = bp_enabled; |
8484 | b->disposition = disp_donttouch; | |
818dd999 | 8485 | b->frame_id = frame_id; |
c906108c | 8486 | |
00431a78 | 8487 | b->thread = inferior_thread ()->global_num; |
c906108c | 8488 | |
44702360 | 8489 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8490 | |
454dafbd | 8491 | return breakpoint_up (b); |
c906108c | 8492 | } |
611c83ae | 8493 | |
06edf0c0 | 8494 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8495 | The new breakpoint will have type TYPE, use OPS as its |
8496 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8497 | |
06edf0c0 PA |
8498 | static struct breakpoint * |
8499 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8500 | enum bptype type, | |
a1aa2221 LM |
8501 | const struct breakpoint_ops *ops, |
8502 | int loc_enabled) | |
e58b0e63 PA |
8503 | { |
8504 | struct breakpoint *copy; | |
8505 | ||
06edf0c0 | 8506 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8507 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8508 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8509 | |
a6d9a66e | 8510 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8511 | copy->loc->requested_address = orig->loc->requested_address; |
8512 | copy->loc->address = orig->loc->address; | |
8513 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8514 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8515 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8516 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8517 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8518 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8519 | copy->frame_id = orig->frame_id; |
8520 | copy->thread = orig->thread; | |
6c95b8df | 8521 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8522 | |
8523 | copy->enable_state = bp_enabled; | |
8524 | copy->disposition = disp_donttouch; | |
8525 | copy->number = internal_breakpoint_number--; | |
8526 | ||
44702360 | 8527 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8528 | return copy; |
8529 | } | |
8530 | ||
06edf0c0 PA |
8531 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8532 | ORIG is NULL. */ | |
8533 | ||
8534 | struct breakpoint * | |
8535 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8536 | { | |
8537 | /* If there's nothing to clone, then return nothing. */ | |
8538 | if (orig == NULL) | |
8539 | return NULL; | |
8540 | ||
a1aa2221 | 8541 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8542 | } |
8543 | ||
454dafbd | 8544 | breakpoint_up |
a6d9a66e UW |
8545 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8546 | enum bptype type) | |
611c83ae PA |
8547 | { |
8548 | struct symtab_and_line sal; | |
8549 | ||
8550 | sal = find_pc_line (pc, 0); | |
8551 | sal.pc = pc; | |
8552 | sal.section = find_pc_overlay (pc); | |
8553 | sal.explicit_pc = 1; | |
8554 | ||
a6d9a66e | 8555 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8556 | } |
c906108c | 8557 | \f |
c5aa993b | 8558 | |
c906108c SS |
8559 | /* Tell the user we have just set a breakpoint B. */ |
8560 | ||
8561 | static void | |
fba45db2 | 8562 | mention (struct breakpoint *b) |
c906108c | 8563 | { |
348d480f | 8564 | b->ops->print_mention (b); |
2d33446d | 8565 | current_uiout->text ("\n"); |
c906108c | 8566 | } |
c906108c | 8567 | \f |
c5aa993b | 8568 | |
1a853c52 PA |
8569 | static int bp_loc_is_permanent (struct bp_location *loc); |
8570 | ||
0d381245 | 8571 | static struct bp_location * |
39d61571 | 8572 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8573 | const struct symtab_and_line *sal) |
8574 | { | |
8575 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8576 | CORE_ADDR adjusted_address; |
8577 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8578 | ||
8579 | if (loc_gdbarch == NULL) | |
8580 | loc_gdbarch = b->gdbarch; | |
8581 | ||
8582 | /* Adjust the breakpoint's address prior to allocating a location. | |
8583 | Once we call allocate_bp_location(), that mostly uninitialized | |
8584 | location will be placed on the location chain. Adjustment of the | |
8585 | breakpoint may cause target_read_memory() to be called and we do | |
8586 | not want its scan of the location chain to find a breakpoint and | |
8587 | location that's only been partially initialized. */ | |
8588 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8589 | sal->pc, b->type); | |
0d381245 | 8590 | |
d30113d4 | 8591 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8592 | loc = allocate_bp_location (b); |
d30113d4 JK |
8593 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8594 | tmp = &((*tmp)->next)) | |
0d381245 | 8595 | ; |
d30113d4 | 8596 | loc->next = *tmp; |
0d381245 | 8597 | *tmp = loc; |
3742cc8b | 8598 | |
0d381245 | 8599 | loc->requested_address = sal->pc; |
3742cc8b | 8600 | loc->address = adjusted_address; |
6c95b8df | 8601 | loc->pspace = sal->pspace; |
935676c9 | 8602 | loc->probe.prob = sal->prob; |
729662a5 | 8603 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8604 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8605 | loc->section = sal->section; |
3742cc8b | 8606 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8607 | loc->line_number = sal->line; |
2f202fde | 8608 | loc->symtab = sal->symtab; |
4a27f119 | 8609 | loc->symbol = sal->symbol; |
3467ec66 PA |
8610 | loc->msymbol = sal->msymbol; |
8611 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8612 | |
0e30163f JK |
8613 | set_breakpoint_location_function (loc, |
8614 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8615 | |
6ae88661 LM |
8616 | /* While by definition, permanent breakpoints are already present in the |
8617 | code, we don't mark the location as inserted. Normally one would expect | |
8618 | that GDB could rely on that breakpoint instruction to stop the program, | |
8619 | thus removing the need to insert its own breakpoint, except that executing | |
8620 | the breakpoint instruction can kill the target instead of reporting a | |
8621 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8622 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8623 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8624 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8625 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8626 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8627 | it manually increments the PC, thus avoiding executing the breakpoint | |
8628 | instruction.) */ | |
1a853c52 | 8629 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8630 | loc->permanent = 1; |
1a853c52 | 8631 | |
0d381245 VP |
8632 | return loc; |
8633 | } | |
514f746b AR |
8634 | \f |
8635 | ||
1cf4d951 | 8636 | /* See breakpoint.h. */ |
514f746b | 8637 | |
1cf4d951 PA |
8638 | int |
8639 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8640 | { |
8641 | int len; | |
8642 | CORE_ADDR addr; | |
1afeeb75 | 8643 | const gdb_byte *bpoint; |
514f746b AR |
8644 | gdb_byte *target_mem; |
8645 | ||
1cf4d951 PA |
8646 | addr = address; |
8647 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8648 | ||
8649 | /* Software breakpoints unsupported? */ | |
8650 | if (bpoint == NULL) | |
8651 | return 0; | |
8652 | ||
224c3ddb | 8653 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8654 | |
8655 | /* Enable the automatic memory restoration from breakpoints while | |
8656 | we read the memory. Otherwise we could say about our temporary | |
8657 | breakpoints they are permanent. */ | |
cb85b21b TT |
8658 | scoped_restore restore_memory |
8659 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8660 | |
8661 | if (target_read_memory (address, target_mem, len) == 0 | |
8662 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8663 | return 1; |
1cf4d951 | 8664 | |
cb85b21b | 8665 | return 0; |
1cf4d951 PA |
8666 | } |
8667 | ||
8668 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8669 | return 0 otherwise. */ | |
8670 | ||
8671 | static int | |
8672 | bp_loc_is_permanent (struct bp_location *loc) | |
8673 | { | |
514f746b AR |
8674 | gdb_assert (loc != NULL); |
8675 | ||
244558af LM |
8676 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8677 | attempt to read from the addresses the locations of these breakpoint types | |
8678 | point to. program_breakpoint_here_p, below, will attempt to read | |
8679 | memory. */ | |
8680 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8681 | return 0; | |
8682 | ||
5ed8105e | 8683 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8684 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8685 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8686 | } |
8687 | ||
e7e0cddf SS |
8688 | /* Build a command list for the dprintf corresponding to the current |
8689 | settings of the dprintf style options. */ | |
8690 | ||
8691 | static void | |
8692 | update_dprintf_command_list (struct breakpoint *b) | |
8693 | { | |
8694 | char *dprintf_args = b->extra_string; | |
8695 | char *printf_line = NULL; | |
8696 | ||
8697 | if (!dprintf_args) | |
8698 | return; | |
8699 | ||
8700 | dprintf_args = skip_spaces (dprintf_args); | |
8701 | ||
8702 | /* Allow a comma, as it may have terminated a location, but don't | |
8703 | insist on it. */ | |
8704 | if (*dprintf_args == ',') | |
8705 | ++dprintf_args; | |
8706 | dprintf_args = skip_spaces (dprintf_args); | |
8707 | ||
8708 | if (*dprintf_args != '"') | |
8709 | error (_("Bad format string, missing '\"'.")); | |
8710 | ||
d3ce09f5 | 8711 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8712 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8713 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8714 | { |
8715 | if (!dprintf_function) | |
8716 | error (_("No function supplied for dprintf call")); | |
8717 | ||
8718 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8719 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8720 | dprintf_function, | |
8721 | dprintf_channel, | |
8722 | dprintf_args); | |
8723 | else | |
8724 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8725 | dprintf_function, | |
8726 | dprintf_args); | |
8727 | } | |
d3ce09f5 SS |
8728 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8729 | { | |
8730 | if (target_can_run_breakpoint_commands ()) | |
8731 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8732 | else | |
8733 | { | |
8734 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8735 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8736 | } | |
8737 | } | |
e7e0cddf SS |
8738 | else |
8739 | internal_error (__FILE__, __LINE__, | |
8740 | _("Invalid dprintf style.")); | |
8741 | ||
f28045c2 | 8742 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8743 | |
12973681 TT |
8744 | /* Manufacture a printf sequence. */ |
8745 | struct command_line *printf_cmd_line | |
8746 | = new struct command_line (simple_control, printf_line); | |
8747 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8748 | command_lines_deleter ())); | |
e7e0cddf SS |
8749 | } |
8750 | ||
8751 | /* Update all dprintf commands, making their command lists reflect | |
8752 | current style settings. */ | |
8753 | ||
8754 | static void | |
eb4c3f4a | 8755 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8756 | struct cmd_list_element *c) |
8757 | { | |
8758 | struct breakpoint *b; | |
8759 | ||
8760 | ALL_BREAKPOINTS (b) | |
8761 | { | |
8762 | if (b->type == bp_dprintf) | |
8763 | update_dprintf_command_list (b); | |
8764 | } | |
8765 | } | |
c3f6f71d | 8766 | |
f00aae0f KS |
8767 | /* Create a breakpoint with SAL as location. Use LOCATION |
8768 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8769 | as condition expression. If LOCATION is NULL then create an |
8770 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8771 | |
8772 | static void | |
d9b3f62e | 8773 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8774 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8775 | event_location_up &&location, |
e1e01040 PA |
8776 | gdb::unique_xmalloc_ptr<char> filter, |
8777 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8778 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8779 | enum bptype type, enum bpdisp disposition, |
8780 | int thread, int task, int ignore_count, | |
c0a91b2b | 8781 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8782 | int enabled, int internal, unsigned flags, |
8783 | int display_canonical) | |
018d34a4 | 8784 | { |
0d381245 | 8785 | int i; |
018d34a4 VP |
8786 | |
8787 | if (type == bp_hardware_breakpoint) | |
8788 | { | |
fbbd034e AS |
8789 | int target_resources_ok; |
8790 | ||
8791 | i = hw_breakpoint_used_count (); | |
8792 | target_resources_ok = | |
8793 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8794 | i + 1, 0); |
8795 | if (target_resources_ok == 0) | |
8796 | error (_("No hardware breakpoint support in the target.")); | |
8797 | else if (target_resources_ok < 0) | |
8798 | error (_("Hardware breakpoints used exceeds limit.")); | |
8799 | } | |
8800 | ||
6c5b2ebe | 8801 | gdb_assert (!sals.empty ()); |
6c95b8df | 8802 | |
6c5b2ebe | 8803 | for (const auto &sal : sals) |
0d381245 | 8804 | { |
0d381245 VP |
8805 | struct bp_location *loc; |
8806 | ||
8807 | if (from_tty) | |
5af949e3 UW |
8808 | { |
8809 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8810 | if (!loc_gdbarch) | |
8811 | loc_gdbarch = gdbarch; | |
8812 | ||
8813 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8814 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8815 | } |
0d381245 | 8816 | |
6c5b2ebe | 8817 | if (&sal == &sals[0]) |
0d381245 | 8818 | { |
d9b3f62e | 8819 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8820 | b->thread = thread; |
4a306c9a | 8821 | b->task = task; |
855a6e68 | 8822 | |
e1e01040 PA |
8823 | b->cond_string = cond_string.release (); |
8824 | b->extra_string = extra_string.release (); | |
0d381245 | 8825 | b->ignore_count = ignore_count; |
41447f92 | 8826 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8827 | b->disposition = disposition; |
6c95b8df | 8828 | |
44f238bb PA |
8829 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8830 | b->loc->inserted = 1; | |
8831 | ||
0fb4aa4b PA |
8832 | if (type == bp_static_tracepoint) |
8833 | { | |
d9b3f62e | 8834 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8835 | struct static_tracepoint_marker marker; |
8836 | ||
983af33b | 8837 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8838 | { |
8839 | /* We already know the marker exists, otherwise, we | |
8840 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8841 | const char *p |
8842 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8843 | const char *endp; |
0fb4aa4b | 8844 | |
f1735a53 | 8845 | p = skip_spaces (p); |
0fb4aa4b | 8846 | |
f1735a53 | 8847 | endp = skip_to_space (p); |
0fb4aa4b | 8848 | |
5d9310c4 | 8849 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8850 | |
3e43a32a MS |
8851 | printf_filtered (_("Probed static tracepoint " |
8852 | "marker \"%s\"\n"), | |
5d9310c4 | 8853 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8854 | } |
8855 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8856 | { | |
5d9310c4 | 8857 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8858 | |
3e43a32a MS |
8859 | printf_filtered (_("Probed static tracepoint " |
8860 | "marker \"%s\"\n"), | |
5d9310c4 | 8861 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8862 | } |
8863 | else | |
3e43a32a MS |
8864 | warning (_("Couldn't determine the static " |
8865 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8866 | } |
8867 | ||
0d381245 VP |
8868 | loc = b->loc; |
8869 | } | |
8870 | else | |
018d34a4 | 8871 | { |
39d61571 | 8872 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8873 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8874 | loc->inserted = 1; | |
0d381245 VP |
8875 | } |
8876 | ||
8877 | if (b->cond_string) | |
8878 | { | |
bbc13ae3 KS |
8879 | const char *arg = b->cond_string; |
8880 | ||
1bb9788d TT |
8881 | loc->cond = parse_exp_1 (&arg, loc->address, |
8882 | block_for_pc (loc->address), 0); | |
0d381245 | 8883 | if (*arg) |
588ae58c | 8884 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8885 | } |
e7e0cddf SS |
8886 | |
8887 | /* Dynamic printf requires and uses additional arguments on the | |
8888 | command line, otherwise it's an error. */ | |
8889 | if (type == bp_dprintf) | |
8890 | { | |
8891 | if (b->extra_string) | |
8892 | update_dprintf_command_list (b); | |
8893 | else | |
8894 | error (_("Format string required")); | |
8895 | } | |
8896 | else if (b->extra_string) | |
588ae58c | 8897 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8898 | } |
018d34a4 | 8899 | |
56435ebe | 8900 | b->display_canonical = display_canonical; |
f00aae0f | 8901 | if (location != NULL) |
d28cd78a | 8902 | b->location = std::move (location); |
018d34a4 | 8903 | else |
d28cd78a | 8904 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8905 | b->filter = filter.release (); |
d9b3f62e | 8906 | } |
018d34a4 | 8907 | |
d9b3f62e PA |
8908 | static void |
8909 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8910 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8911 | event_location_up &&location, |
e1e01040 PA |
8912 | gdb::unique_xmalloc_ptr<char> filter, |
8913 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8914 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8915 | enum bptype type, enum bpdisp disposition, |
8916 | int thread, int task, int ignore_count, | |
c0a91b2b | 8917 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8918 | int enabled, int internal, unsigned flags, |
8919 | int display_canonical) | |
d9b3f62e | 8920 | { |
a5e364af | 8921 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8922 | |
a5e364af | 8923 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8924 | sals, std::move (location), |
e1e01040 PA |
8925 | std::move (filter), |
8926 | std::move (cond_string), | |
8927 | std::move (extra_string), | |
d9b3f62e PA |
8928 | type, disposition, |
8929 | thread, task, ignore_count, | |
8930 | ops, from_tty, | |
44f238bb PA |
8931 | enabled, internal, flags, |
8932 | display_canonical); | |
d9b3f62e | 8933 | |
b270e6f9 | 8934 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8935 | } |
8936 | ||
8937 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8938 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8939 | value. COND_STRING, if not NULL, specified the condition to be | |
8940 | used for all breakpoints. Essentially the only case where | |
8941 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8942 | function. In that case, it's still not possible to specify | |
8943 | separate conditions for different overloaded functions, so | |
8944 | we take just a single condition string. | |
8945 | ||
c3f6f71d | 8946 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8947 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8948 | array contents). If the function fails (error() is called), the |
8949 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8950 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8951 | |
8952 | static void | |
8cdf0e15 | 8953 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8954 | struct linespec_result *canonical, |
e1e01040 PA |
8955 | gdb::unique_xmalloc_ptr<char> cond_string, |
8956 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8957 | enum bptype type, enum bpdisp disposition, |
8958 | int thread, int task, int ignore_count, | |
c0a91b2b | 8959 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8960 | int enabled, int internal, unsigned flags) |
c906108c | 8961 | { |
f8eba3c6 | 8962 | if (canonical->pre_expanded) |
6c5b2ebe | 8963 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8964 | |
6c5b2ebe | 8965 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8966 | { |
f00aae0f | 8967 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8968 | 'break', without arguments. */ |
ffc2605c | 8969 | event_location_up location |
f00aae0f | 8970 | = (canonical->location != NULL |
8e9e35b1 | 8971 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8972 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8973 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8974 | |
6c5b2ebe | 8975 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8976 | std::move (location), |
e1e01040 PA |
8977 | std::move (filter_string), |
8978 | std::move (cond_string), | |
8979 | std::move (extra_string), | |
e7e0cddf | 8980 | type, disposition, |
84f4c1fe | 8981 | thread, task, ignore_count, ops, |
44f238bb | 8982 | from_tty, enabled, internal, flags, |
56435ebe | 8983 | canonical->special_display); |
c3f6f71d | 8984 | } |
c3f6f71d | 8985 | } |
c906108c | 8986 | |
f00aae0f | 8987 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8988 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8989 | addresses found. LOCATION points to the end of the SAL (for |
8990 | linespec locations). | |
9998af43 TJB |
8991 | |
8992 | The array and the line spec strings are allocated on the heap, it is | |
8993 | the caller's responsibility to free them. */ | |
c906108c | 8994 | |
b9362cc7 | 8995 | static void |
f00aae0f | 8996 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8997 | struct linespec_result *canonical) |
c3f6f71d | 8998 | { |
f00aae0f KS |
8999 | struct symtab_and_line cursal; |
9000 | ||
9001 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9002 | { | |
a20714ff | 9003 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9004 | |
a20714ff | 9005 | if (spec == NULL) |
f00aae0f KS |
9006 | { |
9007 | /* The last displayed codepoint, if it's valid, is our default | |
9008 | breakpoint address. */ | |
9009 | if (last_displayed_sal_is_valid ()) | |
9010 | { | |
f00aae0f KS |
9011 | /* Set sal's pspace, pc, symtab, and line to the values |
9012 | corresponding to the last call to print_frame_info. | |
9013 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9014 | as the breakpoint line number is inappropriate otherwise. | |
9015 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9016 | symtab_and_line sal = get_last_displayed_sal (); |
9017 | CORE_ADDR pc = sal.pc; | |
9018 | ||
f00aae0f KS |
9019 | sal = find_pc_line (pc, 0); |
9020 | ||
9021 | /* "break" without arguments is equivalent to "break *PC" | |
9022 | where PC is the last displayed codepoint's address. So | |
9023 | make sure to set sal.explicit_pc to prevent GDB from | |
9024 | trying to expand the list of sals to include all other | |
9025 | instances with the same symtab and line. */ | |
9026 | sal.pc = pc; | |
9027 | sal.explicit_pc = 1; | |
9028 | ||
6c5b2ebe PA |
9029 | struct linespec_sals lsal; |
9030 | lsal.sals = {sal}; | |
f00aae0f KS |
9031 | lsal.canonical = NULL; |
9032 | ||
6c5b2ebe | 9033 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9034 | return; |
9035 | } | |
9036 | else | |
9037 | error (_("No default breakpoint address now.")); | |
c906108c | 9038 | } |
c906108c | 9039 | } |
f00aae0f KS |
9040 | |
9041 | /* Force almost all breakpoints to be in terms of the | |
9042 | current_source_symtab (which is decode_line_1's default). | |
9043 | This should produce the results we want almost all of the | |
9044 | time while leaving default_breakpoint_* alone. | |
9045 | ||
9046 | ObjC: However, don't match an Objective-C method name which | |
9047 | may have a '+' or '-' succeeded by a '['. */ | |
9048 | cursal = get_current_source_symtab_and_line (); | |
9049 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9050 | { |
a20714ff | 9051 | const char *spec = NULL; |
cc80f267 | 9052 | |
f00aae0f | 9053 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9054 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9055 | |
f00aae0f | 9056 | if (!cursal.symtab |
a20714ff PA |
9057 | || (spec != NULL |
9058 | && strchr ("+-", spec[0]) != NULL | |
9059 | && spec[1] != '[')) | |
f00aae0f | 9060 | { |
c2f4122d | 9061 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9062 | get_last_displayed_symtab (), |
9063 | get_last_displayed_line (), | |
9064 | canonical, NULL, NULL); | |
9065 | return; | |
9066 | } | |
c906108c | 9067 | } |
f00aae0f | 9068 | |
c2f4122d | 9069 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9070 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9071 | } |
c906108c | 9072 | |
c906108c | 9073 | |
c3f6f71d | 9074 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9075 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9076 | |
b9362cc7 | 9077 | static void |
6c5b2ebe | 9078 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9079 | { |
6c5b2ebe PA |
9080 | for (auto &sal : sals) |
9081 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9082 | } |
9083 | ||
7a697b8d SS |
9084 | /* Fast tracepoints may have restrictions on valid locations. For |
9085 | instance, a fast tracepoint using a jump instead of a trap will | |
9086 | likely have to overwrite more bytes than a trap would, and so can | |
9087 | only be placed where the instruction is longer than the jump, or a | |
9088 | multi-instruction sequence does not have a jump into the middle of | |
9089 | it, etc. */ | |
9090 | ||
9091 | static void | |
9092 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9093 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9094 | { |
6c5b2ebe | 9095 | for (const auto &sal : sals) |
7a697b8d | 9096 | { |
f8eba3c6 TT |
9097 | struct gdbarch *sarch; |
9098 | ||
6c5b2ebe | 9099 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9100 | /* We fall back to GDBARCH if there is no architecture |
9101 | associated with SAL. */ | |
9102 | if (sarch == NULL) | |
9103 | sarch = gdbarch; | |
281d762b TT |
9104 | std::string msg; |
9105 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9106 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9107 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9108 | } |
9109 | } | |
9110 | ||
018d34a4 VP |
9111 | /* Given TOK, a string specification of condition and thread, as |
9112 | accepted by the 'break' command, extract the condition | |
9113 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9114 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9115 | If no condition is found, *COND_STRING is set to NULL. |
9116 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9117 | |
9118 | static void | |
bbc13ae3 | 9119 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9120 | char **cond_string, int *thread, int *task, |
9121 | char **rest) | |
018d34a4 VP |
9122 | { |
9123 | *cond_string = NULL; | |
9124 | *thread = -1; | |
ed1d1739 KS |
9125 | *task = 0; |
9126 | *rest = NULL; | |
9127 | ||
018d34a4 VP |
9128 | while (tok && *tok) |
9129 | { | |
bbc13ae3 | 9130 | const char *end_tok; |
018d34a4 | 9131 | int toklen; |
bbc13ae3 KS |
9132 | const char *cond_start = NULL; |
9133 | const char *cond_end = NULL; | |
cc59ec59 | 9134 | |
f1735a53 | 9135 | tok = skip_spaces (tok); |
e7e0cddf SS |
9136 | |
9137 | if ((*tok == '"' || *tok == ',') && rest) | |
9138 | { | |
9139 | *rest = savestring (tok, strlen (tok)); | |
9140 | return; | |
9141 | } | |
9142 | ||
f1735a53 | 9143 | end_tok = skip_to_space (tok); |
d634f2de | 9144 | |
018d34a4 | 9145 | toklen = end_tok - tok; |
d634f2de | 9146 | |
018d34a4 VP |
9147 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9148 | { | |
9149 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9150 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9151 | cond_end = tok; |
d634f2de | 9152 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9153 | } |
9154 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9155 | { | |
5d5658a1 PA |
9156 | const char *tmptok; |
9157 | struct thread_info *thr; | |
d634f2de | 9158 | |
018d34a4 | 9159 | tok = end_tok + 1; |
5d5658a1 | 9160 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9161 | if (tok == tmptok) |
9162 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9163 | *thread = thr->global_num; |
bbc13ae3 | 9164 | tok = tmptok; |
018d34a4 | 9165 | } |
4a306c9a JB |
9166 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9167 | { | |
9168 | char *tmptok; | |
9169 | ||
9170 | tok = end_tok + 1; | |
bbc13ae3 | 9171 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9172 | if (tok == tmptok) |
9173 | error (_("Junk after task keyword.")); | |
9174 | if (!valid_task_id (*task)) | |
b6199126 | 9175 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9176 | tok = tmptok; |
4a306c9a | 9177 | } |
e7e0cddf SS |
9178 | else if (rest) |
9179 | { | |
9180 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9181 | return; |
e7e0cddf | 9182 | } |
018d34a4 VP |
9183 | else |
9184 | error (_("Junk at end of arguments.")); | |
9185 | } | |
9186 | } | |
9187 | ||
0fb4aa4b PA |
9188 | /* Decode a static tracepoint marker spec. */ |
9189 | ||
6c5b2ebe | 9190 | static std::vector<symtab_and_line> |
f00aae0f | 9191 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9192 | { |
f00aae0f KS |
9193 | const char *p = &(*arg_p)[3]; |
9194 | const char *endp; | |
0fb4aa4b | 9195 | |
f1735a53 | 9196 | p = skip_spaces (p); |
0fb4aa4b | 9197 | |
f1735a53 | 9198 | endp = skip_to_space (p); |
0fb4aa4b | 9199 | |
81b1e71c | 9200 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9201 | |
5d9310c4 SM |
9202 | std::vector<static_tracepoint_marker> markers |
9203 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9204 | if (markers.empty ()) | |
81b1e71c TT |
9205 | error (_("No known static tracepoint marker named %s"), |
9206 | marker_str.c_str ()); | |
0fb4aa4b | 9207 | |
6c5b2ebe | 9208 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9209 | sals.reserve (markers.size ()); |
0fb4aa4b | 9210 | |
5d9310c4 | 9211 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9212 | { |
5d9310c4 SM |
9213 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9214 | sal.pc = marker.address; | |
6c5b2ebe | 9215 | sals.push_back (sal); |
5d9310c4 | 9216 | } |
0fb4aa4b | 9217 | |
0fb4aa4b PA |
9218 | *arg_p = endp; |
9219 | return sals; | |
9220 | } | |
9221 | ||
f00aae0f | 9222 | /* See breakpoint.h. */ |
0101ce28 | 9223 | |
8cdf0e15 VP |
9224 | int |
9225 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9226 | const struct event_location *location, |
9227 | const char *cond_string, | |
9228 | int thread, const char *extra_string, | |
f00aae0f | 9229 | int parse_extra, |
0fb4aa4b | 9230 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9231 | int ignore_count, |
9232 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9233 | const struct breakpoint_ops *ops, |
44f238bb PA |
9234 | int from_tty, int enabled, int internal, |
9235 | unsigned flags) | |
c3f6f71d | 9236 | { |
7efd8fc2 | 9237 | struct linespec_result canonical; |
80c99de1 | 9238 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9239 | int pending = 0; |
4a306c9a | 9240 | int task = 0; |
86b17b60 | 9241 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9242 | |
348d480f PA |
9243 | gdb_assert (ops != NULL); |
9244 | ||
f00aae0f KS |
9245 | /* If extra_string isn't useful, set it to NULL. */ |
9246 | if (extra_string != NULL && *extra_string == '\0') | |
9247 | extra_string = NULL; | |
9248 | ||
492d29ea | 9249 | TRY |
b78a6381 | 9250 | { |
f00aae0f | 9251 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9252 | } |
492d29ea | 9253 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9254 | { |
492d29ea PA |
9255 | /* If caller is interested in rc value from parse, set |
9256 | value. */ | |
9257 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9258 | { |
05ff989b AC |
9259 | /* If pending breakpoint support is turned off, throw |
9260 | error. */ | |
fa8d40ab JJ |
9261 | |
9262 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9263 | throw_exception (e); |
9264 | ||
9265 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9266 | |
05ff989b AC |
9267 | /* If pending breakpoint support is auto query and the user |
9268 | selects no, then simply return the error code. */ | |
059fb39f | 9269 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9270 | && !nquery (_("Make %s pending on future shared library load? "), |
9271 | bptype_string (type_wanted))) | |
fd9b8c24 | 9272 | return 0; |
fa8d40ab | 9273 | |
05ff989b AC |
9274 | /* At this point, either the user was queried about setting |
9275 | a pending breakpoint and selected yes, or pending | |
9276 | breakpoint behavior is on and thus a pending breakpoint | |
9277 | is defaulted on behalf of the user. */ | |
f00aae0f | 9278 | pending = 1; |
0101ce28 | 9279 | } |
492d29ea PA |
9280 | else |
9281 | throw_exception (e); | |
0101ce28 | 9282 | } |
492d29ea PA |
9283 | END_CATCH |
9284 | ||
6c5b2ebe | 9285 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9286 | return 0; |
c3f6f71d | 9287 | |
c3f6f71d JM |
9288 | /* ----------------------------- SNIP ----------------------------- |
9289 | Anything added to the cleanup chain beyond this point is assumed | |
9290 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9291 | then the memory is not reclaimed. */ |
9292 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9293 | |
c3f6f71d JM |
9294 | /* Resolve all line numbers to PC's and verify that the addresses |
9295 | are ok for the target. */ | |
0101ce28 | 9296 | if (!pending) |
f8eba3c6 | 9297 | { |
6c5b2ebe PA |
9298 | for (auto &lsal : canonical.lsals) |
9299 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9300 | } |
c3f6f71d | 9301 | |
7a697b8d | 9302 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9303 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9304 | { |
6c5b2ebe PA |
9305 | for (const auto &lsal : canonical.lsals) |
9306 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9307 | } |
7a697b8d | 9308 | |
c3f6f71d JM |
9309 | /* Verify that condition can be parsed, before setting any |
9310 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9311 | breakpoint. */ |
0101ce28 | 9312 | if (!pending) |
c3f6f71d | 9313 | { |
e1e01040 PA |
9314 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9315 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9316 | ||
f00aae0f | 9317 | if (parse_extra) |
72b2ff0e | 9318 | { |
0878d0fa | 9319 | char *rest; |
e1e01040 | 9320 | char *cond; |
52d361e1 | 9321 | |
6c5b2ebe | 9322 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9323 | |
0878d0fa YQ |
9324 | /* Here we only parse 'arg' to separate condition |
9325 | from thread number, so parsing in context of first | |
9326 | sal is OK. When setting the breakpoint we'll | |
9327 | re-parse it in context of each sal. */ | |
9328 | ||
6c5b2ebe | 9329 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9330 | &cond, &thread, &task, &rest); |
9331 | cond_string_copy.reset (cond); | |
9332 | extra_string_copy.reset (rest); | |
72b2ff0e | 9333 | } |
2f069f6f | 9334 | else |
72b2ff0e | 9335 | { |
f00aae0f KS |
9336 | if (type_wanted != bp_dprintf |
9337 | && extra_string != NULL && *extra_string != '\0') | |
9338 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9339 | |
9340 | /* Create a private copy of condition string. */ | |
9341 | if (cond_string) | |
e1e01040 | 9342 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9343 | /* Create a private copy of any extra string. */ |
9344 | if (extra_string) | |
e1e01040 | 9345 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9346 | } |
0fb4aa4b | 9347 | |
52d361e1 | 9348 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9349 | std::move (cond_string_copy), |
9350 | std::move (extra_string_copy), | |
9351 | type_wanted, | |
d9b3f62e PA |
9352 | tempflag ? disp_del : disp_donttouch, |
9353 | thread, task, ignore_count, ops, | |
44f238bb | 9354 | from_tty, enabled, internal, flags); |
c906108c | 9355 | } |
0101ce28 JJ |
9356 | else |
9357 | { | |
a5e364af | 9358 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9359 | |
a5e364af | 9360 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9361 | b->location = copy_event_location (location); |
bfccc43c | 9362 | |
f00aae0f KS |
9363 | if (parse_extra) |
9364 | b->cond_string = NULL; | |
e12c7713 MK |
9365 | else |
9366 | { | |
9367 | /* Create a private copy of condition string. */ | |
e1e01040 | 9368 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9369 | b->thread = thread; |
e12c7713 | 9370 | } |
f00aae0f KS |
9371 | |
9372 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9373 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9374 | b->ignore_count = ignore_count; |
0101ce28 | 9375 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9376 | b->condition_not_parsed = 1; |
41447f92 | 9377 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9378 | if ((type_wanted != bp_breakpoint |
9379 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9380 | b->pspace = current_program_space; |
8bea4e01 | 9381 | |
b270e6f9 | 9382 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9383 | } |
9384 | ||
6c5b2ebe | 9385 | if (canonical.lsals.size () > 1) |
95a42b64 | 9386 | { |
3e43a32a MS |
9387 | warning (_("Multiple breakpoints were set.\nUse the " |
9388 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9389 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9390 | } |
9391 | ||
80c99de1 PA |
9392 | /* That's it. Discard the cleanups for data inserted into the |
9393 | breakpoint. */ | |
9394 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9395 | |
80c99de1 | 9396 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9397 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9398 | |
9399 | return 1; | |
c3f6f71d | 9400 | } |
c906108c | 9401 | |
348d480f | 9402 | /* Set a breakpoint. |
72b2ff0e VP |
9403 | ARG is a string describing breakpoint address, |
9404 | condition, and thread. | |
9405 | FLAG specifies if a breakpoint is hardware on, | |
9406 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9407 | and BP_TEMPFLAG. */ | |
348d480f | 9408 | |
98deb0da | 9409 | static void |
f2fc3015 | 9410 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9411 | { |
72b2ff0e | 9412 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9413 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9414 | ? bp_hardware_breakpoint | |
9415 | : bp_breakpoint); | |
55aa24fb | 9416 | struct breakpoint_ops *ops; |
f00aae0f | 9417 | |
ffc2605c | 9418 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9419 | |
9420 | /* Matching breakpoints on probes. */ | |
5b56227b | 9421 | if (location != NULL |
ffc2605c | 9422 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9423 | ops = &bkpt_probe_breakpoint_ops; |
9424 | else | |
9425 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9426 | |
8cdf0e15 | 9427 | create_breakpoint (get_current_arch (), |
ffc2605c | 9428 | location.get (), |
f00aae0f | 9429 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9430 | tempflag, type_wanted, |
8cdf0e15 VP |
9431 | 0 /* Ignore count */, |
9432 | pending_break_support, | |
55aa24fb | 9433 | ops, |
8cdf0e15 | 9434 | from_tty, |
84f4c1fe | 9435 | 1 /* enabled */, |
44f238bb PA |
9436 | 0 /* internal */, |
9437 | 0); | |
c906108c SS |
9438 | } |
9439 | ||
c906108c SS |
9440 | /* Helper function for break_command_1 and disassemble_command. */ |
9441 | ||
9442 | void | |
fba45db2 | 9443 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9444 | { |
9445 | CORE_ADDR pc; | |
9446 | ||
9447 | if (sal->pc == 0 && sal->symtab != NULL) | |
9448 | { | |
9449 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9450 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9451 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9452 | sal->pc = pc; |
6a048695 | 9453 | |
4a64f543 MS |
9454 | /* If this SAL corresponds to a breakpoint inserted using a line |
9455 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9456 | if (sal->explicit_line) |
059acae7 | 9457 | skip_prologue_sal (sal); |
c906108c SS |
9458 | } |
9459 | ||
9460 | if (sal->section == 0 && sal->symtab != NULL) | |
9461 | { | |
346d1dfe | 9462 | const struct blockvector *bv; |
3977b71f | 9463 | const struct block *b; |
c5aa993b | 9464 | struct symbol *sym; |
c906108c | 9465 | |
43f3e411 DE |
9466 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9467 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9468 | if (bv != NULL) |
9469 | { | |
7f0df278 | 9470 | sym = block_linkage_function (b); |
c906108c SS |
9471 | if (sym != NULL) |
9472 | { | |
eb822aa6 DE |
9473 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9474 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9475 | sym); | |
c906108c SS |
9476 | } |
9477 | else | |
9478 | { | |
4a64f543 MS |
9479 | /* It really is worthwhile to have the section, so we'll |
9480 | just have to look harder. This case can be executed | |
9481 | if we have line numbers but no functions (as can | |
9482 | happen in assembly source). */ | |
c906108c | 9483 | |
5ed8105e | 9484 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9485 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9486 | |
5ed8105e | 9487 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9488 | if (msym.minsym) |
efd66ac6 | 9489 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9490 | } |
9491 | } | |
9492 | } | |
9493 | } | |
9494 | ||
9495 | void | |
0b39b52e | 9496 | break_command (const char *arg, int from_tty) |
c906108c | 9497 | { |
db107f19 | 9498 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9499 | } |
9500 | ||
c906108c | 9501 | void |
0b39b52e | 9502 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9503 | { |
db107f19 | 9504 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9505 | } |
9506 | ||
c906108c | 9507 | static void |
0b39b52e | 9508 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9509 | { |
db107f19 | 9510 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9511 | } |
9512 | ||
9513 | static void | |
0b39b52e | 9514 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9515 | { |
db107f19 | 9516 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9517 | } |
9518 | ||
9519 | static void | |
ee7ddd71 | 9520 | stop_command (const char *arg, int from_tty) |
c906108c | 9521 | { |
a3f17187 | 9522 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9523 | Usage: stop in <function | address>\n\ |
a3f17187 | 9524 | stop at <line>\n")); |
c906108c SS |
9525 | } |
9526 | ||
9527 | static void | |
4495129a | 9528 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9529 | { |
9530 | int badInput = 0; | |
9531 | ||
c5aa993b | 9532 | if (arg == (char *) NULL) |
c906108c SS |
9533 | badInput = 1; |
9534 | else if (*arg != '*') | |
9535 | { | |
4495129a | 9536 | const char *argptr = arg; |
c906108c SS |
9537 | int hasColon = 0; |
9538 | ||
4a64f543 | 9539 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9540 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9541 | function/method name. */ |
c906108c | 9542 | while (*argptr && !hasColon) |
c5aa993b JM |
9543 | { |
9544 | hasColon = (*argptr == ':'); | |
9545 | argptr++; | |
9546 | } | |
c906108c SS |
9547 | |
9548 | if (hasColon) | |
c5aa993b | 9549 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9550 | else |
c5aa993b | 9551 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9552 | } |
9553 | ||
9554 | if (badInput) | |
a3f17187 | 9555 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9556 | else |
db107f19 | 9557 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9558 | } |
9559 | ||
9560 | static void | |
4495129a | 9561 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9562 | { |
9563 | int badInput = 0; | |
9564 | ||
c5aa993b | 9565 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9566 | badInput = 1; |
9567 | else | |
9568 | { | |
4495129a | 9569 | const char *argptr = arg; |
c906108c SS |
9570 | int hasColon = 0; |
9571 | ||
4a64f543 MS |
9572 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9573 | it is probably a line number. */ | |
c906108c | 9574 | while (*argptr && !hasColon) |
c5aa993b JM |
9575 | { |
9576 | hasColon = (*argptr == ':'); | |
9577 | argptr++; | |
9578 | } | |
c906108c SS |
9579 | |
9580 | if (hasColon) | |
c5aa993b | 9581 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9582 | else |
c5aa993b | 9583 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9584 | } |
9585 | ||
9586 | if (badInput) | |
65e65158 | 9587 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9588 | else |
db107f19 | 9589 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9590 | } |
9591 | ||
e7e0cddf SS |
9592 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9593 | with a prewired command list consisting of a single output command, | |
9594 | built from extra arguments supplied on the dprintf command | |
9595 | line. */ | |
9596 | ||
da821c7b | 9597 | static void |
0b39b52e | 9598 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9599 | { |
ffc2605c | 9600 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9601 | |
9602 | /* If non-NULL, ARG should have been advanced past the location; | |
9603 | the next character must be ','. */ | |
9604 | if (arg != NULL) | |
9605 | { | |
9606 | if (arg[0] != ',' || arg[1] == '\0') | |
9607 | error (_("Format string required")); | |
9608 | else | |
9609 | { | |
9610 | /* Skip the comma. */ | |
9611 | ++arg; | |
9612 | } | |
9613 | } | |
9614 | ||
e7e0cddf | 9615 | create_breakpoint (get_current_arch (), |
ffc2605c | 9616 | location.get (), |
f00aae0f | 9617 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9618 | 0, bp_dprintf, |
9619 | 0 /* Ignore count */, | |
9620 | pending_break_support, | |
9621 | &dprintf_breakpoint_ops, | |
9622 | from_tty, | |
9623 | 1 /* enabled */, | |
9624 | 0 /* internal */, | |
9625 | 0); | |
9626 | } | |
9627 | ||
d3ce09f5 | 9628 | static void |
0b39b52e | 9629 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9630 | { |
9631 | error (_("May only run agent-printf on the target")); | |
9632 | } | |
9633 | ||
f1310107 TJB |
9634 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9635 | ranged breakpoints. */ | |
9636 | ||
9637 | static int | |
9638 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9639 | const address_space *aspace, |
09ac7c10 TT |
9640 | CORE_ADDR bp_addr, |
9641 | const struct target_waitstatus *ws) | |
f1310107 | 9642 | { |
09ac7c10 | 9643 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9644 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9645 | return 0; |
9646 | ||
f1310107 TJB |
9647 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9648 | bl->length, aspace, bp_addr); | |
9649 | } | |
9650 | ||
9651 | /* Implement the "resources_needed" breakpoint_ops method for | |
9652 | ranged breakpoints. */ | |
9653 | ||
9654 | static int | |
9655 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9656 | { | |
9657 | return target_ranged_break_num_registers (); | |
9658 | } | |
9659 | ||
9660 | /* Implement the "print_it" breakpoint_ops method for | |
9661 | ranged breakpoints. */ | |
9662 | ||
9663 | static enum print_stop_action | |
348d480f | 9664 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9665 | { |
348d480f | 9666 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9667 | struct bp_location *bl = b->loc; |
79a45e25 | 9668 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9669 | |
9670 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9671 | ||
9672 | /* Ranged breakpoints have only one location. */ | |
9673 | gdb_assert (bl && bl->next == NULL); | |
9674 | ||
9675 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9676 | |
9677 | maybe_print_thread_hit_breakpoint (uiout); | |
9678 | ||
f1310107 | 9679 | if (b->disposition == disp_del) |
112e8700 | 9680 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9681 | else |
112e8700 SM |
9682 | uiout->text ("Ranged breakpoint "); |
9683 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9684 | { |
112e8700 | 9685 | uiout->field_string ("reason", |
f1310107 | 9686 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9687 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9688 | } |
112e8700 SM |
9689 | uiout->field_int ("bkptno", b->number); |
9690 | uiout->text (", "); | |
f1310107 TJB |
9691 | |
9692 | return PRINT_SRC_AND_LOC; | |
9693 | } | |
9694 | ||
9695 | /* Implement the "print_one" breakpoint_ops method for | |
9696 | ranged breakpoints. */ | |
9697 | ||
9698 | static void | |
9699 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9700 | struct bp_location **last_loc) | |
9701 | { | |
9702 | struct bp_location *bl = b->loc; | |
9703 | struct value_print_options opts; | |
79a45e25 | 9704 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9705 | |
9706 | /* Ranged breakpoints have only one location. */ | |
9707 | gdb_assert (bl && bl->next == NULL); | |
9708 | ||
9709 | get_user_print_options (&opts); | |
9710 | ||
9711 | if (opts.addressprint) | |
9712 | /* We don't print the address range here, it will be printed later | |
9713 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9714 | uiout->field_skip ("addr"); |
f1310107 TJB |
9715 | annotate_field (5); |
9716 | print_breakpoint_location (b, bl); | |
9717 | *last_loc = bl; | |
9718 | } | |
9719 | ||
9720 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9721 | ranged breakpoints. */ | |
9722 | ||
9723 | static void | |
9724 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9725 | struct ui_out *uiout) | |
9726 | { | |
9727 | CORE_ADDR address_start, address_end; | |
9728 | struct bp_location *bl = b->loc; | |
d7e74731 | 9729 | string_file stb; |
f1310107 TJB |
9730 | |
9731 | gdb_assert (bl); | |
9732 | ||
9733 | address_start = bl->address; | |
9734 | address_end = address_start + bl->length - 1; | |
9735 | ||
112e8700 | 9736 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9737 | stb.printf ("[%s, %s]", |
9738 | print_core_address (bl->gdbarch, address_start), | |
9739 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9740 | uiout->field_stream ("addr", stb); |
9741 | uiout->text ("\n"); | |
f1310107 TJB |
9742 | } |
9743 | ||
9744 | /* Implement the "print_mention" breakpoint_ops method for | |
9745 | ranged breakpoints. */ | |
9746 | ||
9747 | static void | |
9748 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9749 | { | |
9750 | struct bp_location *bl = b->loc; | |
79a45e25 | 9751 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9752 | |
9753 | gdb_assert (bl); | |
9754 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9755 | ||
2d33446d TT |
9756 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9757 | b->number, paddress (bl->gdbarch, bl->address), | |
9758 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9759 | } |
9760 | ||
9761 | /* Implement the "print_recreate" breakpoint_ops method for | |
9762 | ranged breakpoints. */ | |
9763 | ||
9764 | static void | |
9765 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9766 | { | |
f00aae0f | 9767 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9768 | event_location_to_string (b->location.get ()), |
9769 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9770 | print_recreate_thread (b, fp); |
f1310107 TJB |
9771 | } |
9772 | ||
9773 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9774 | ||
2060206e | 9775 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9776 | |
9777 | /* Find the address where the end of the breakpoint range should be | |
9778 | placed, given the SAL of the end of the range. This is so that if | |
9779 | the user provides a line number, the end of the range is set to the | |
9780 | last instruction of the given line. */ | |
9781 | ||
9782 | static CORE_ADDR | |
9783 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9784 | { | |
9785 | CORE_ADDR end; | |
9786 | ||
9787 | /* If the user provided a PC value, use it. Otherwise, | |
9788 | find the address of the end of the given location. */ | |
9789 | if (sal.explicit_pc) | |
9790 | end = sal.pc; | |
9791 | else | |
9792 | { | |
9793 | int ret; | |
9794 | CORE_ADDR start; | |
9795 | ||
9796 | ret = find_line_pc_range (sal, &start, &end); | |
9797 | if (!ret) | |
9798 | error (_("Could not find location of the end of the range.")); | |
9799 | ||
9800 | /* find_line_pc_range returns the start of the next line. */ | |
9801 | end--; | |
9802 | } | |
9803 | ||
9804 | return end; | |
9805 | } | |
9806 | ||
9807 | /* Implement the "break-range" CLI command. */ | |
9808 | ||
9809 | static void | |
0b39b52e | 9810 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9811 | { |
f2fc3015 | 9812 | const char *arg_start; |
f1310107 TJB |
9813 | struct linespec_result canonical_start, canonical_end; |
9814 | int bp_count, can_use_bp, length; | |
9815 | CORE_ADDR end; | |
9816 | struct breakpoint *b; | |
f1310107 TJB |
9817 | |
9818 | /* We don't support software ranged breakpoints. */ | |
9819 | if (target_ranged_break_num_registers () < 0) | |
9820 | error (_("This target does not support hardware ranged breakpoints.")); | |
9821 | ||
9822 | bp_count = hw_breakpoint_used_count (); | |
9823 | bp_count += target_ranged_break_num_registers (); | |
9824 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9825 | bp_count, 0); | |
9826 | if (can_use_bp < 0) | |
9827 | error (_("Hardware breakpoints used exceeds limit.")); | |
9828 | ||
f8eba3c6 | 9829 | arg = skip_spaces (arg); |
f1310107 TJB |
9830 | if (arg == NULL || arg[0] == '\0') |
9831 | error(_("No address range specified.")); | |
9832 | ||
f8eba3c6 | 9833 | arg_start = arg; |
ffc2605c TT |
9834 | event_location_up start_location = string_to_event_location (&arg, |
9835 | current_language); | |
9836 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9837 | |
9838 | if (arg[0] != ',') | |
9839 | error (_("Too few arguments.")); | |
6c5b2ebe | 9840 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9841 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9842 | |
6c5b2ebe | 9843 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9844 | |
6c5b2ebe PA |
9845 | if (canonical_start.lsals.size () > 1 |
9846 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9847 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9848 | ||
6c5b2ebe | 9849 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9850 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9851 | |
9852 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9853 | arg = skip_spaces (arg); |
f1310107 TJB |
9854 | |
9855 | /* Parse the end location. */ | |
9856 | ||
f1310107 TJB |
9857 | arg_start = arg; |
9858 | ||
f8eba3c6 | 9859 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9860 | parse_breakpoint_sals because we need to specify the start location's |
9861 | symtab and line as the default symtab and line for the end of the | |
9862 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9863 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9864 | event_location_up end_location = string_to_event_location (&arg, |
9865 | current_language); | |
9866 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9867 | sal_start.symtab, sal_start.line, |
9868 | &canonical_end, NULL, NULL); | |
9869 | ||
6c5b2ebe | 9870 | if (canonical_end.lsals.empty ()) |
f1310107 | 9871 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9872 | |
6c5b2ebe PA |
9873 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9874 | if (canonical_end.lsals.size () > 1 | |
9875 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9876 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9877 | ||
6c5b2ebe | 9878 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9879 | |
9880 | end = find_breakpoint_range_end (sal_end); | |
9881 | if (sal_start.pc > end) | |
177b42fe | 9882 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9883 | |
9884 | length = end - sal_start.pc + 1; | |
9885 | if (length < 0) | |
9886 | /* Length overflowed. */ | |
9887 | error (_("Address range too large.")); | |
9888 | else if (length == 1) | |
9889 | { | |
9890 | /* This range is simple enough to be handled by | |
9891 | the `hbreak' command. */ | |
81b1e71c | 9892 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9893 | |
9894 | return; | |
9895 | } | |
9896 | ||
9897 | /* Now set up the breakpoint. */ | |
9898 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9899 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9900 | set_breakpoint_count (breakpoint_count + 1); |
9901 | b->number = breakpoint_count; | |
9902 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9903 | b->location = std::move (start_location); |
9904 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9905 | b->loc->length = length; |
9906 | ||
f1310107 | 9907 | mention (b); |
76727919 | 9908 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9909 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9910 | } |
9911 | ||
4a64f543 MS |
9912 | /* Return non-zero if EXP is verified as constant. Returned zero |
9913 | means EXP is variable. Also the constant detection may fail for | |
9914 | some constant expressions and in such case still falsely return | |
9915 | zero. */ | |
2e6e3d9c | 9916 | |
65d79d4b SDJ |
9917 | static int |
9918 | watchpoint_exp_is_const (const struct expression *exp) | |
9919 | { | |
9920 | int i = exp->nelts; | |
9921 | ||
9922 | while (i > 0) | |
9923 | { | |
9924 | int oplenp, argsp; | |
9925 | ||
9926 | /* We are only interested in the descriptor of each element. */ | |
9927 | operator_length (exp, i, &oplenp, &argsp); | |
9928 | i -= oplenp; | |
9929 | ||
9930 | switch (exp->elts[i].opcode) | |
9931 | { | |
9932 | case BINOP_ADD: | |
9933 | case BINOP_SUB: | |
9934 | case BINOP_MUL: | |
9935 | case BINOP_DIV: | |
9936 | case BINOP_REM: | |
9937 | case BINOP_MOD: | |
9938 | case BINOP_LSH: | |
9939 | case BINOP_RSH: | |
9940 | case BINOP_LOGICAL_AND: | |
9941 | case BINOP_LOGICAL_OR: | |
9942 | case BINOP_BITWISE_AND: | |
9943 | case BINOP_BITWISE_IOR: | |
9944 | case BINOP_BITWISE_XOR: | |
9945 | case BINOP_EQUAL: | |
9946 | case BINOP_NOTEQUAL: | |
9947 | case BINOP_LESS: | |
9948 | case BINOP_GTR: | |
9949 | case BINOP_LEQ: | |
9950 | case BINOP_GEQ: | |
9951 | case BINOP_REPEAT: | |
9952 | case BINOP_COMMA: | |
9953 | case BINOP_EXP: | |
9954 | case BINOP_MIN: | |
9955 | case BINOP_MAX: | |
9956 | case BINOP_INTDIV: | |
9957 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9958 | case TERNOP_COND: |
9959 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9960 | |
9961 | case OP_LONG: | |
edd079d9 | 9962 | case OP_FLOAT: |
65d79d4b SDJ |
9963 | case OP_LAST: |
9964 | case OP_COMPLEX: | |
9965 | case OP_STRING: | |
65d79d4b SDJ |
9966 | case OP_ARRAY: |
9967 | case OP_TYPE: | |
608b4967 TT |
9968 | case OP_TYPEOF: |
9969 | case OP_DECLTYPE: | |
6e72ca20 | 9970 | case OP_TYPEID: |
65d79d4b SDJ |
9971 | case OP_NAME: |
9972 | case OP_OBJC_NSSTRING: | |
9973 | ||
9974 | case UNOP_NEG: | |
9975 | case UNOP_LOGICAL_NOT: | |
9976 | case UNOP_COMPLEMENT: | |
9977 | case UNOP_ADDR: | |
9978 | case UNOP_HIGH: | |
aeaa2474 | 9979 | case UNOP_CAST: |
9eaf6705 TT |
9980 | |
9981 | case UNOP_CAST_TYPE: | |
9982 | case UNOP_REINTERPRET_CAST: | |
9983 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9984 | /* Unary, binary and ternary operators: We have to check |
9985 | their operands. If they are constant, then so is the | |
9986 | result of that operation. For instance, if A and B are | |
9987 | determined to be constants, then so is "A + B". | |
9988 | ||
9989 | UNOP_IND is one exception to the rule above, because the | |
9990 | value of *ADDR is not necessarily a constant, even when | |
9991 | ADDR is. */ | |
65d79d4b SDJ |
9992 | break; |
9993 | ||
9994 | case OP_VAR_VALUE: | |
9995 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9996 | |
65d79d4b | 9997 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9998 | possible that a buggy compiler could mark a variable as |
9999 | constant even when it is not, and TYPE_CONST would return | |
10000 | true in this case, while SYMBOL_CLASS wouldn't. | |
10001 | ||
10002 | We also have to check for function symbols because they | |
10003 | are always constant. */ | |
65d79d4b SDJ |
10004 | { |
10005 | struct symbol *s = exp->elts[i + 2].symbol; | |
10006 | ||
10007 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10008 | && SYMBOL_CLASS (s) != LOC_CONST | |
10009 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10010 | return 0; | |
10011 | break; | |
10012 | } | |
10013 | ||
10014 | /* The default action is to return 0 because we are using | |
10015 | the optimistic approach here: If we don't know something, | |
10016 | then it is not a constant. */ | |
10017 | default: | |
10018 | return 0; | |
10019 | } | |
10020 | } | |
10021 | ||
10022 | return 1; | |
10023 | } | |
10024 | ||
c1fc2657 | 10025 | /* Watchpoint destructor. */ |
3a5c3e22 | 10026 | |
c1fc2657 | 10027 | watchpoint::~watchpoint () |
3a5c3e22 | 10028 | { |
c1fc2657 SM |
10029 | xfree (this->exp_string); |
10030 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10031 | } |
10032 | ||
348d480f PA |
10033 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10034 | ||
10035 | static void | |
10036 | re_set_watchpoint (struct breakpoint *b) | |
10037 | { | |
3a5c3e22 PA |
10038 | struct watchpoint *w = (struct watchpoint *) b; |
10039 | ||
348d480f PA |
10040 | /* Watchpoint can be either on expression using entirely global |
10041 | variables, or it can be on local variables. | |
10042 | ||
10043 | Watchpoints of the first kind are never auto-deleted, and even | |
10044 | persist across program restarts. Since they can use variables | |
10045 | from shared libraries, we need to reparse expression as libraries | |
10046 | are loaded and unloaded. | |
10047 | ||
10048 | Watchpoints on local variables can also change meaning as result | |
10049 | of solib event. For example, if a watchpoint uses both a local | |
10050 | and a global variables in expression, it's a local watchpoint, | |
10051 | but unloading of a shared library will make the expression | |
10052 | invalid. This is not a very common use case, but we still | |
10053 | re-evaluate expression, to avoid surprises to the user. | |
10054 | ||
10055 | Note that for local watchpoints, we re-evaluate it only if | |
10056 | watchpoints frame id is still valid. If it's not, it means the | |
10057 | watchpoint is out of scope and will be deleted soon. In fact, | |
10058 | I'm not sure we'll ever be called in this case. | |
10059 | ||
10060 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10061 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10062 | |
3a5c3e22 PA |
10063 | Don't do anything about disabled watchpoints, since they will be |
10064 | reevaluated again when enabled. */ | |
10065 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10066 | } |
10067 | ||
77b06cd7 TJB |
10068 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10069 | ||
10070 | static int | |
10071 | insert_watchpoint (struct bp_location *bl) | |
10072 | { | |
3a5c3e22 PA |
10073 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10074 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10075 | |
10076 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10077 | w->cond_exp.get ()); |
77b06cd7 TJB |
10078 | } |
10079 | ||
10080 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10081 | ||
10082 | static int | |
73971819 | 10083 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10084 | { |
3a5c3e22 PA |
10085 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10086 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10087 | |
10088 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10089 | w->cond_exp.get ()); |
e09342b5 TJB |
10090 | } |
10091 | ||
e09342b5 | 10092 | static int |
348d480f | 10093 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10094 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10095 | const struct target_waitstatus *ws) |
e09342b5 | 10096 | { |
348d480f | 10097 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10098 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10099 | |
348d480f PA |
10100 | /* Continuable hardware watchpoints are treated as non-existent if the |
10101 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10102 | some data address). Otherwise gdb won't stop on a break instruction | |
10103 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10104 | been defined. Also skip watchpoints which we know did not trigger | |
10105 | (did not match the data address). */ | |
10106 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10107 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10108 | return 0; |
9c06b0b4 | 10109 | |
348d480f | 10110 | return 1; |
9c06b0b4 TJB |
10111 | } |
10112 | ||
348d480f PA |
10113 | static void |
10114 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10115 | { |
348d480f | 10116 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10117 | |
348d480f | 10118 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10119 | } |
10120 | ||
10121 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10122 | hardware watchpoints. */ |
9c06b0b4 TJB |
10123 | |
10124 | static int | |
348d480f | 10125 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10126 | { |
3a5c3e22 PA |
10127 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10128 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10129 | |
10130 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10131 | } |
10132 | ||
10133 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10134 | hardware watchpoints. */ |
9c06b0b4 TJB |
10135 | |
10136 | static int | |
348d480f | 10137 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10138 | { |
efa80663 PA |
10139 | /* Read and access watchpoints only work with hardware support. */ |
10140 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10141 | } |
10142 | ||
9c06b0b4 | 10143 | static enum print_stop_action |
348d480f | 10144 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10145 | { |
348d480f | 10146 | struct breakpoint *b; |
348d480f | 10147 | enum print_stop_action result; |
3a5c3e22 | 10148 | struct watchpoint *w; |
79a45e25 | 10149 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10150 | |
10151 | gdb_assert (bs->bp_location_at != NULL); | |
10152 | ||
348d480f | 10153 | b = bs->breakpoint_at; |
3a5c3e22 | 10154 | w = (struct watchpoint *) b; |
348d480f | 10155 | |
f303dbd6 PA |
10156 | annotate_watchpoint (b->number); |
10157 | maybe_print_thread_hit_breakpoint (uiout); | |
10158 | ||
d7e74731 PA |
10159 | string_file stb; |
10160 | ||
76f9c9cf | 10161 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10162 | switch (b->type) |
10163 | { | |
348d480f | 10164 | case bp_watchpoint: |
9c06b0b4 | 10165 | case bp_hardware_watchpoint: |
112e8700 SM |
10166 | if (uiout->is_mi_like_p ()) |
10167 | uiout->field_string | |
10168 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10169 | mention (b); |
76f9c9cf | 10170 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10171 | uiout->text ("\nOld value = "); |
850645cf | 10172 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10173 | uiout->field_stream ("old", stb); |
10174 | uiout->text ("\nNew value = "); | |
850645cf | 10175 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10176 | uiout->field_stream ("new", stb); |
10177 | uiout->text ("\n"); | |
348d480f PA |
10178 | /* More than one watchpoint may have been triggered. */ |
10179 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10180 | break; |
10181 | ||
10182 | case bp_read_watchpoint: | |
112e8700 SM |
10183 | if (uiout->is_mi_like_p ()) |
10184 | uiout->field_string | |
10185 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10186 | mention (b); |
76f9c9cf | 10187 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10188 | uiout->text ("\nValue = "); |
850645cf | 10189 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10190 | uiout->field_stream ("value", stb); |
10191 | uiout->text ("\n"); | |
348d480f | 10192 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10193 | break; |
10194 | ||
10195 | case bp_access_watchpoint: | |
348d480f PA |
10196 | if (bs->old_val != NULL) |
10197 | { | |
112e8700 SM |
10198 | if (uiout->is_mi_like_p ()) |
10199 | uiout->field_string | |
10200 | ("reason", | |
348d480f PA |
10201 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10202 | mention (b); | |
76f9c9cf | 10203 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10204 | uiout->text ("\nOld value = "); |
850645cf | 10205 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10206 | uiout->field_stream ("old", stb); |
10207 | uiout->text ("\nNew value = "); | |
348d480f PA |
10208 | } |
10209 | else | |
10210 | { | |
10211 | mention (b); | |
112e8700 SM |
10212 | if (uiout->is_mi_like_p ()) |
10213 | uiout->field_string | |
10214 | ("reason", | |
348d480f | 10215 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10216 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10217 | uiout->text ("\nValue = "); |
348d480f | 10218 | } |
850645cf | 10219 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10220 | uiout->field_stream ("new", stb); |
10221 | uiout->text ("\n"); | |
348d480f | 10222 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10223 | break; |
10224 | default: | |
348d480f | 10225 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10226 | } |
10227 | ||
348d480f PA |
10228 | return result; |
10229 | } | |
10230 | ||
10231 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10232 | watchpoints. */ | |
10233 | ||
10234 | static void | |
10235 | print_mention_watchpoint (struct breakpoint *b) | |
10236 | { | |
3a5c3e22 | 10237 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10238 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10239 | const char *tuple_name; |
348d480f PA |
10240 | |
10241 | switch (b->type) | |
10242 | { | |
10243 | case bp_watchpoint: | |
112e8700 | 10244 | uiout->text ("Watchpoint "); |
46b9c129 | 10245 | tuple_name = "wpt"; |
348d480f PA |
10246 | break; |
10247 | case bp_hardware_watchpoint: | |
112e8700 | 10248 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10249 | tuple_name = "wpt"; |
348d480f PA |
10250 | break; |
10251 | case bp_read_watchpoint: | |
112e8700 | 10252 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10253 | tuple_name = "hw-rwpt"; |
348d480f PA |
10254 | break; |
10255 | case bp_access_watchpoint: | |
112e8700 | 10256 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10257 | tuple_name = "hw-awpt"; |
348d480f PA |
10258 | break; |
10259 | default: | |
10260 | internal_error (__FILE__, __LINE__, | |
10261 | _("Invalid hardware watchpoint type.")); | |
10262 | } | |
10263 | ||
46b9c129 | 10264 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10265 | uiout->field_int ("number", b->number); |
10266 | uiout->text (": "); | |
10267 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10268 | } |
10269 | ||
10270 | /* Implement the "print_recreate" breakpoint_ops method for | |
10271 | watchpoints. */ | |
10272 | ||
10273 | static void | |
10274 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10275 | { | |
3a5c3e22 PA |
10276 | struct watchpoint *w = (struct watchpoint *) b; |
10277 | ||
348d480f PA |
10278 | switch (b->type) |
10279 | { | |
10280 | case bp_watchpoint: | |
10281 | case bp_hardware_watchpoint: | |
10282 | fprintf_unfiltered (fp, "watch"); | |
10283 | break; | |
10284 | case bp_read_watchpoint: | |
10285 | fprintf_unfiltered (fp, "rwatch"); | |
10286 | break; | |
10287 | case bp_access_watchpoint: | |
10288 | fprintf_unfiltered (fp, "awatch"); | |
10289 | break; | |
10290 | default: | |
10291 | internal_error (__FILE__, __LINE__, | |
10292 | _("Invalid watchpoint type.")); | |
10293 | } | |
10294 | ||
3a5c3e22 | 10295 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10296 | print_recreate_thread (b, fp); |
348d480f PA |
10297 | } |
10298 | ||
427cd150 TT |
10299 | /* Implement the "explains_signal" breakpoint_ops method for |
10300 | watchpoints. */ | |
10301 | ||
47591c29 | 10302 | static int |
427cd150 TT |
10303 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10304 | { | |
10305 | /* A software watchpoint cannot cause a signal other than | |
10306 | GDB_SIGNAL_TRAP. */ | |
10307 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10308 | return 0; |
427cd150 | 10309 | |
47591c29 | 10310 | return 1; |
427cd150 TT |
10311 | } |
10312 | ||
348d480f PA |
10313 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10314 | ||
2060206e | 10315 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10316 | |
10317 | /* Implement the "insert" breakpoint_ops method for | |
10318 | masked hardware watchpoints. */ | |
10319 | ||
10320 | static int | |
10321 | insert_masked_watchpoint (struct bp_location *bl) | |
10322 | { | |
3a5c3e22 PA |
10323 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10324 | ||
10325 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10326 | bl->watchpoint_type); |
10327 | } | |
10328 | ||
10329 | /* Implement the "remove" breakpoint_ops method for | |
10330 | masked hardware watchpoints. */ | |
10331 | ||
10332 | static int | |
73971819 | 10333 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10334 | { |
3a5c3e22 PA |
10335 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10336 | ||
10337 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10338 | bl->watchpoint_type); |
10339 | } | |
10340 | ||
10341 | /* Implement the "resources_needed" breakpoint_ops method for | |
10342 | masked hardware watchpoints. */ | |
10343 | ||
10344 | static int | |
10345 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10346 | { | |
3a5c3e22 PA |
10347 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10348 | ||
10349 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10350 | } |
10351 | ||
10352 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10353 | masked hardware watchpoints. */ | |
10354 | ||
10355 | static int | |
10356 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10357 | { | |
10358 | return 0; | |
10359 | } | |
10360 | ||
10361 | /* Implement the "print_it" breakpoint_ops method for | |
10362 | masked hardware watchpoints. */ | |
10363 | ||
10364 | static enum print_stop_action | |
10365 | print_it_masked_watchpoint (bpstat bs) | |
10366 | { | |
10367 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10368 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10369 | |
10370 | /* Masked watchpoints have only one location. */ | |
10371 | gdb_assert (b->loc && b->loc->next == NULL); | |
10372 | ||
f303dbd6 PA |
10373 | annotate_watchpoint (b->number); |
10374 | maybe_print_thread_hit_breakpoint (uiout); | |
10375 | ||
348d480f PA |
10376 | switch (b->type) |
10377 | { | |
10378 | case bp_hardware_watchpoint: | |
112e8700 SM |
10379 | if (uiout->is_mi_like_p ()) |
10380 | uiout->field_string | |
10381 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10382 | break; |
10383 | ||
10384 | case bp_read_watchpoint: | |
112e8700 SM |
10385 | if (uiout->is_mi_like_p ()) |
10386 | uiout->field_string | |
10387 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10388 | break; |
10389 | ||
10390 | case bp_access_watchpoint: | |
112e8700 SM |
10391 | if (uiout->is_mi_like_p ()) |
10392 | uiout->field_string | |
10393 | ("reason", | |
348d480f PA |
10394 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10395 | break; | |
10396 | default: | |
10397 | internal_error (__FILE__, __LINE__, | |
10398 | _("Invalid hardware watchpoint type.")); | |
10399 | } | |
10400 | ||
10401 | mention (b); | |
112e8700 | 10402 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10403 | Check the underlying instruction at PC for the memory\n\ |
10404 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10405 | uiout->text ("\n"); |
9c06b0b4 TJB |
10406 | |
10407 | /* More than one watchpoint may have been triggered. */ | |
10408 | return PRINT_UNKNOWN; | |
10409 | } | |
10410 | ||
10411 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10412 | masked hardware watchpoints. */ | |
10413 | ||
10414 | static void | |
10415 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10416 | struct ui_out *uiout) | |
10417 | { | |
3a5c3e22 PA |
10418 | struct watchpoint *w = (struct watchpoint *) b; |
10419 | ||
9c06b0b4 TJB |
10420 | /* Masked watchpoints have only one location. */ |
10421 | gdb_assert (b->loc && b->loc->next == NULL); | |
10422 | ||
112e8700 SM |
10423 | uiout->text ("\tmask "); |
10424 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10425 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10426 | } |
10427 | ||
10428 | /* Implement the "print_mention" breakpoint_ops method for | |
10429 | masked hardware watchpoints. */ | |
10430 | ||
10431 | static void | |
10432 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10433 | { | |
3a5c3e22 | 10434 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10435 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10436 | const char *tuple_name; |
9c06b0b4 TJB |
10437 | |
10438 | switch (b->type) | |
10439 | { | |
10440 | case bp_hardware_watchpoint: | |
112e8700 | 10441 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10442 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10443 | break; |
10444 | case bp_read_watchpoint: | |
112e8700 | 10445 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10446 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10447 | break; |
10448 | case bp_access_watchpoint: | |
112e8700 | 10449 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10450 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10451 | break; |
10452 | default: | |
10453 | internal_error (__FILE__, __LINE__, | |
10454 | _("Invalid hardware watchpoint type.")); | |
10455 | } | |
10456 | ||
46b9c129 | 10457 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10458 | uiout->field_int ("number", b->number); |
10459 | uiout->text (": "); | |
10460 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10461 | } |
10462 | ||
10463 | /* Implement the "print_recreate" breakpoint_ops method for | |
10464 | masked hardware watchpoints. */ | |
10465 | ||
10466 | static void | |
10467 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10468 | { | |
3a5c3e22 | 10469 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10470 | char tmp[40]; |
10471 | ||
10472 | switch (b->type) | |
10473 | { | |
10474 | case bp_hardware_watchpoint: | |
10475 | fprintf_unfiltered (fp, "watch"); | |
10476 | break; | |
10477 | case bp_read_watchpoint: | |
10478 | fprintf_unfiltered (fp, "rwatch"); | |
10479 | break; | |
10480 | case bp_access_watchpoint: | |
10481 | fprintf_unfiltered (fp, "awatch"); | |
10482 | break; | |
10483 | default: | |
10484 | internal_error (__FILE__, __LINE__, | |
10485 | _("Invalid hardware watchpoint type.")); | |
10486 | } | |
10487 | ||
3a5c3e22 PA |
10488 | sprintf_vma (tmp, w->hw_wp_mask); |
10489 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10490 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10491 | } |
10492 | ||
10493 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10494 | ||
2060206e | 10495 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10496 | |
10497 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10498 | ||
10499 | static int | |
10500 | is_masked_watchpoint (const struct breakpoint *b) | |
10501 | { | |
10502 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10503 | } | |
10504 | ||
53a5351d JM |
10505 | /* accessflag: hw_write: watch write, |
10506 | hw_read: watch read, | |
10507 | hw_access: watch access (read or write) */ | |
c906108c | 10508 | static void |
bbc13ae3 | 10509 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10510 | int just_location, int internal) |
c906108c | 10511 | { |
c1fc2657 | 10512 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10513 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10514 | struct value *result; |
bb9d5f81 | 10515 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10516 | const char *exp_start = NULL; |
10517 | const char *exp_end = NULL; | |
10518 | const char *tok, *end_tok; | |
9c06b0b4 | 10519 | int toklen = -1; |
bbc13ae3 KS |
10520 | const char *cond_start = NULL; |
10521 | const char *cond_end = NULL; | |
c906108c | 10522 | enum bptype bp_type; |
37e4754d | 10523 | int thread = -1; |
0cf6dd15 | 10524 | int pc = 0; |
9c06b0b4 TJB |
10525 | /* Flag to indicate whether we are going to use masks for |
10526 | the hardware watchpoint. */ | |
10527 | int use_mask = 0; | |
10528 | CORE_ADDR mask = 0; | |
c906108c | 10529 | |
37e4754d LM |
10530 | /* Make sure that we actually have parameters to parse. */ |
10531 | if (arg != NULL && arg[0] != '\0') | |
10532 | { | |
bbc13ae3 KS |
10533 | const char *value_start; |
10534 | ||
10535 | exp_end = arg + strlen (arg); | |
37e4754d | 10536 | |
9c06b0b4 TJB |
10537 | /* Look for "parameter value" pairs at the end |
10538 | of the arguments string. */ | |
bbc13ae3 | 10539 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10540 | { |
10541 | /* Skip whitespace at the end of the argument list. */ | |
10542 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10543 | tok--; | |
10544 | ||
10545 | /* Find the beginning of the last token. | |
10546 | This is the value of the parameter. */ | |
10547 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10548 | tok--; | |
10549 | value_start = tok + 1; | |
10550 | ||
10551 | /* Skip whitespace. */ | |
10552 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10553 | tok--; | |
10554 | ||
10555 | end_tok = tok; | |
10556 | ||
10557 | /* Find the beginning of the second to last token. | |
10558 | This is the parameter itself. */ | |
10559 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10560 | tok--; | |
10561 | tok++; | |
10562 | toklen = end_tok - tok + 1; | |
10563 | ||
61012eef | 10564 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10565 | { |
5d5658a1 | 10566 | struct thread_info *thr; |
9c06b0b4 TJB |
10567 | /* At this point we've found a "thread" token, which means |
10568 | the user is trying to set a watchpoint that triggers | |
10569 | only in a specific thread. */ | |
5d5658a1 | 10570 | const char *endp; |
37e4754d | 10571 | |
9c06b0b4 TJB |
10572 | if (thread != -1) |
10573 | error(_("You can specify only one thread.")); | |
37e4754d | 10574 | |
9c06b0b4 | 10575 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10576 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10577 | |
5d5658a1 | 10578 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10579 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10580 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10581 | |
5d5658a1 | 10582 | thread = thr->global_num; |
9c06b0b4 | 10583 | } |
61012eef | 10584 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10585 | { |
10586 | /* We've found a "mask" token, which means the user wants to | |
10587 | create a hardware watchpoint that is going to have the mask | |
10588 | facility. */ | |
10589 | struct value *mask_value, *mark; | |
37e4754d | 10590 | |
9c06b0b4 TJB |
10591 | if (use_mask) |
10592 | error(_("You can specify only one mask.")); | |
37e4754d | 10593 | |
9c06b0b4 | 10594 | use_mask = just_location = 1; |
37e4754d | 10595 | |
9c06b0b4 TJB |
10596 | mark = value_mark (); |
10597 | mask_value = parse_to_comma_and_eval (&value_start); | |
10598 | mask = value_as_address (mask_value); | |
10599 | value_free_to_mark (mark); | |
10600 | } | |
10601 | else | |
10602 | /* We didn't recognize what we found. We should stop here. */ | |
10603 | break; | |
37e4754d | 10604 | |
9c06b0b4 TJB |
10605 | /* Truncate the string and get rid of the "parameter value" pair before |
10606 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10607 | exp_end = tok; |
9c06b0b4 | 10608 | } |
37e4754d | 10609 | } |
bbc13ae3 KS |
10610 | else |
10611 | exp_end = arg; | |
37e4754d | 10612 | |
bbc13ae3 KS |
10613 | /* Parse the rest of the arguments. From here on out, everything |
10614 | is in terms of a newly allocated string instead of the original | |
10615 | ARG. */ | |
aee1fcdf | 10616 | innermost_block.reset (); |
81b1e71c TT |
10617 | std::string expression (arg, exp_end - arg); |
10618 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10619 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10620 | exp_end = arg; |
fa8a61dc TT |
10621 | /* Remove trailing whitespace from the expression before saving it. |
10622 | This makes the eventual display of the expression string a bit | |
10623 | prettier. */ | |
10624 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10625 | --exp_end; | |
10626 | ||
65d79d4b | 10627 | /* Checking if the expression is not constant. */ |
4d01a485 | 10628 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10629 | { |
10630 | int len; | |
10631 | ||
10632 | len = exp_end - exp_start; | |
10633 | while (len > 0 && isspace (exp_start[len - 1])) | |
10634 | len--; | |
10635 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10636 | } | |
10637 | ||
aee1fcdf | 10638 | exp_valid_block = innermost_block.block (); |
b926417a | 10639 | struct value *mark = value_mark (); |
850645cf TT |
10640 | struct value *val_as_value = nullptr; |
10641 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10642 | just_location); | |
06a64a0b | 10643 | |
850645cf | 10644 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10645 | { |
850645cf TT |
10646 | saved_bitpos = value_bitpos (val_as_value); |
10647 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10648 | } |
10649 | ||
850645cf | 10650 | value_ref_ptr val; |
06a64a0b TT |
10651 | if (just_location) |
10652 | { | |
9c06b0b4 TJB |
10653 | int ret; |
10654 | ||
06a64a0b | 10655 | exp_valid_block = NULL; |
850645cf | 10656 | val = release_value (value_addr (result)); |
06a64a0b | 10657 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10658 | |
10659 | if (use_mask) | |
10660 | { | |
850645cf | 10661 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10662 | mask); |
10663 | if (ret == -1) | |
10664 | error (_("This target does not support masked watchpoints.")); | |
10665 | else if (ret == -2) | |
10666 | error (_("Invalid mask or memory region.")); | |
10667 | } | |
06a64a0b | 10668 | } |
850645cf TT |
10669 | else if (val_as_value != NULL) |
10670 | val = release_value (val_as_value); | |
c906108c | 10671 | |
f1735a53 TT |
10672 | tok = skip_spaces (arg); |
10673 | end_tok = skip_to_space (tok); | |
c906108c SS |
10674 | |
10675 | toklen = end_tok - tok; | |
10676 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10677 | { | |
aee1fcdf | 10678 | innermost_block.reset (); |
c906108c | 10679 | tok = cond_start = end_tok + 1; |
4d01a485 | 10680 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10681 | |
10682 | /* The watchpoint expression may not be local, but the condition | |
10683 | may still be. E.g.: `watch global if local > 0'. */ | |
aee1fcdf | 10684 | cond_exp_valid_block = innermost_block.block (); |
60e1c644 | 10685 | |
c906108c SS |
10686 | cond_end = tok; |
10687 | } | |
10688 | if (*tok) | |
8a3fe4f8 | 10689 | error (_("Junk at end of command.")); |
c906108c | 10690 | |
441d7c93 PA |
10691 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10692 | ||
10693 | /* Save this because create_internal_breakpoint below invalidates | |
10694 | 'wp_frame'. */ | |
10695 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10696 | |
10697 | /* If the expression is "local", then set up a "watchpoint scope" | |
10698 | breakpoint at the point where we've left the scope of the watchpoint | |
10699 | expression. Create the scope breakpoint before the watchpoint, so | |
10700 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10701 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10702 | { |
441d7c93 PA |
10703 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10704 | ||
10705 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10706 | { |
441d7c93 PA |
10707 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10708 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10709 | ||
edb3359d | 10710 | scope_breakpoint |
441d7c93 | 10711 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10712 | bp_watchpoint_scope, |
10713 | &momentary_breakpoint_ops); | |
d983da9c | 10714 | |
441d7c93 PA |
10715 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10716 | wp_frame = NULL; | |
10717 | ||
edb3359d | 10718 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10719 | |
edb3359d DJ |
10720 | /* Automatically delete the breakpoint when it hits. */ |
10721 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10722 | |
edb3359d | 10723 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10724 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10725 | |
edb3359d | 10726 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10727 | scope_breakpoint->loc->gdbarch = caller_arch; |
10728 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10729 | scope_breakpoint->loc->address |
a6d9a66e UW |
10730 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10731 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10732 | scope_breakpoint->type); |
10733 | } | |
d983da9c DJ |
10734 | } |
10735 | ||
e8369a73 AB |
10736 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10737 | watchpoints here even if hardware watchpoints are turned off, a call | |
10738 | to update_watchpoint later in this function will cause the type to | |
10739 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10740 | ||
10741 | if (accessflag == hw_read) | |
10742 | bp_type = bp_read_watchpoint; | |
10743 | else if (accessflag == hw_access) | |
10744 | bp_type = bp_access_watchpoint; | |
10745 | else | |
10746 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10747 | |
b270e6f9 | 10748 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10749 | |
348d480f | 10750 | if (use_mask) |
b270e6f9 | 10751 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10752 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10753 | else |
b270e6f9 | 10754 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10755 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10756 | w->thread = thread; |
10757 | w->disposition = disp_donttouch; | |
10758 | w->pspace = current_program_space; | |
b22e99fd | 10759 | w->exp = std::move (exp); |
3a5c3e22 PA |
10760 | w->exp_valid_block = exp_valid_block; |
10761 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10762 | if (just_location) |
10763 | { | |
850645cf TT |
10764 | struct type *t = value_type (val.get ()); |
10765 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10766 | |
43cc5389 TT |
10767 | w->exp_string_reparse |
10768 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10769 | |
3a5c3e22 | 10770 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10771 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10772 | } |
10773 | else | |
3a5c3e22 | 10774 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10775 | |
10776 | if (use_mask) | |
10777 | { | |
3a5c3e22 | 10778 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10779 | } |
10780 | else | |
10781 | { | |
3a5c3e22 | 10782 | w->val = val; |
bb9d5f81 PP |
10783 | w->val_bitpos = saved_bitpos; |
10784 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10785 | w->val_valid = 1; |
9c06b0b4 | 10786 | } |
77b06cd7 | 10787 | |
c906108c | 10788 | if (cond_start) |
c1fc2657 | 10789 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10790 | else |
c1fc2657 | 10791 | w->cond_string = 0; |
c5aa993b | 10792 | |
441d7c93 | 10793 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10794 | { |
441d7c93 | 10795 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10796 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10797 | } |
c906108c | 10798 | else |
f6bc2008 | 10799 | { |
3a5c3e22 PA |
10800 | w->watchpoint_frame = null_frame_id; |
10801 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10802 | } |
c906108c | 10803 | |
d983da9c | 10804 | if (scope_breakpoint != NULL) |
c906108c | 10805 | { |
d983da9c DJ |
10806 | /* The scope breakpoint is related to the watchpoint. We will |
10807 | need to act on them together. */ | |
c1fc2657 | 10808 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10809 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10810 | } |
d983da9c | 10811 | |
06a64a0b TT |
10812 | if (!just_location) |
10813 | value_free_to_mark (mark); | |
2d134ed3 | 10814 | |
b270e6f9 TT |
10815 | /* Finally update the new watchpoint. This creates the locations |
10816 | that should be inserted. */ | |
10817 | update_watchpoint (w.get (), 1); | |
a9634178 | 10818 | |
b270e6f9 | 10819 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10820 | } |
10821 | ||
e09342b5 | 10822 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10823 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10824 | |
c906108c | 10825 | static int |
a6535de1 | 10826 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10827 | { |
10828 | int found_memory_cnt = 0; | |
10829 | ||
10830 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10831 | if (!can_use_hw_watchpoints) |
c906108c | 10832 | return 0; |
c5aa993b | 10833 | |
a6535de1 TT |
10834 | gdb_assert (!vals.empty ()); |
10835 | struct value *head = vals[0].get (); | |
10836 | ||
5c44784c JM |
10837 | /* Make sure that the value of the expression depends only upon |
10838 | memory contents, and values computed from them within GDB. If we | |
10839 | find any register references or function calls, we can't use a | |
10840 | hardware watchpoint. | |
10841 | ||
10842 | The idea here is that evaluating an expression generates a series | |
10843 | of values, one holding the value of every subexpression. (The | |
10844 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10845 | a*b+c.) GDB's values hold almost enough information to establish | |
10846 | the criteria given above --- they identify memory lvalues, | |
10847 | register lvalues, computed values, etcetera. So we can evaluate | |
10848 | the expression, and then scan the chain of values that leaves | |
10849 | behind to decide whether we can detect any possible change to the | |
10850 | expression's final value using only hardware watchpoints. | |
10851 | ||
10852 | However, I don't think that the values returned by inferior | |
10853 | function calls are special in any way. So this function may not | |
10854 | notice that an expression involving an inferior function call | |
10855 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10856 | for (const value_ref_ptr &iter : vals) |
c906108c | 10857 | { |
a6535de1 TT |
10858 | struct value *v = iter.get (); |
10859 | ||
5c44784c | 10860 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10861 | { |
8464be76 DJ |
10862 | if (v != head && value_lazy (v)) |
10863 | /* A lazy memory lvalue in the chain is one that GDB never | |
10864 | needed to fetch; we either just used its address (e.g., | |
10865 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10866 | in `a,b'). This doesn't apply to HEAD; if that is | |
10867 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10868 | ; |
53a5351d | 10869 | else |
5c44784c JM |
10870 | { |
10871 | /* Ahh, memory we actually used! Check if we can cover | |
10872 | it with hardware watchpoints. */ | |
df407dfe | 10873 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10874 | |
10875 | /* We only watch structs and arrays if user asked for it | |
10876 | explicitly, never if they just happen to appear in a | |
10877 | middle of some value chain. */ | |
10878 | if (v == head | |
10879 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10880 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10881 | { | |
42ae5230 | 10882 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10883 | int len; |
10884 | int num_regs; | |
10885 | ||
a9634178 | 10886 | len = (target_exact_watchpoints |
e09342b5 TJB |
10887 | && is_scalar_type_recursive (vtype))? |
10888 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10889 | |
e09342b5 TJB |
10890 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10891 | if (!num_regs) | |
2e70b7b9 MS |
10892 | return 0; |
10893 | else | |
e09342b5 | 10894 | found_memory_cnt += num_regs; |
2e70b7b9 | 10895 | } |
5c44784c | 10896 | } |
c5aa993b | 10897 | } |
5086187c AC |
10898 | else if (VALUE_LVAL (v) != not_lval |
10899 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10900 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10901 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10902 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10903 | } |
10904 | ||
10905 | /* The expression itself looks suitable for using a hardware | |
10906 | watchpoint, but give the target machine a chance to reject it. */ | |
10907 | return found_memory_cnt; | |
10908 | } | |
10909 | ||
8b93c638 | 10910 | void |
f2fc3015 | 10911 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10912 | { |
84f4c1fe | 10913 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10914 | } |
10915 | ||
06a64a0b TT |
10916 | /* A helper function that looks for the "-location" argument and then |
10917 | calls watch_command_1. */ | |
10918 | ||
10919 | static void | |
0b39b52e | 10920 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10921 | { |
10922 | int just_location = 0; | |
10923 | ||
10924 | if (arg | |
10925 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10926 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10927 | { | |
e9cafbcc | 10928 | arg = skip_spaces (arg); |
06a64a0b TT |
10929 | just_location = 1; |
10930 | } | |
10931 | ||
84f4c1fe | 10932 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10933 | } |
8926118c | 10934 | |
c5aa993b | 10935 | static void |
0b39b52e | 10936 | watch_command (const char *arg, int from_tty) |
c906108c | 10937 | { |
06a64a0b | 10938 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10939 | } |
10940 | ||
8b93c638 | 10941 | void |
f2fc3015 | 10942 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10943 | { |
84f4c1fe | 10944 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10945 | } |
8926118c | 10946 | |
c5aa993b | 10947 | static void |
0b39b52e | 10948 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10949 | { |
06a64a0b | 10950 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10951 | } |
10952 | ||
8b93c638 | 10953 | void |
f2fc3015 | 10954 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10955 | { |
84f4c1fe | 10956 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10957 | } |
8926118c | 10958 | |
c5aa993b | 10959 | static void |
0b39b52e | 10960 | awatch_command (const char *arg, int from_tty) |
c906108c | 10961 | { |
06a64a0b | 10962 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10963 | } |
c906108c | 10964 | \f |
c5aa993b | 10965 | |
cfc31633 PA |
10966 | /* Data for the FSM that manages the until(location)/advance commands |
10967 | in infcmd.c. Here because it uses the mechanisms of | |
10968 | breakpoints. */ | |
c906108c | 10969 | |
cfc31633 | 10970 | struct until_break_fsm |
bfec99b2 | 10971 | { |
cfc31633 PA |
10972 | /* The base class. */ |
10973 | struct thread_fsm thread_fsm; | |
10974 | ||
10975 | /* The thread that as current when the command was executed. */ | |
10976 | int thread; | |
10977 | ||
10978 | /* The breakpoint set at the destination location. */ | |
10979 | struct breakpoint *location_breakpoint; | |
10980 | ||
10981 | /* Breakpoint set at the return address in the caller frame. May be | |
10982 | NULL. */ | |
10983 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
10984 | }; |
10985 | ||
8980e177 PA |
10986 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
10987 | struct thread_info *thread); | |
10988 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
10989 | struct thread_info *thread); | |
cfc31633 PA |
10990 | static enum async_reply_reason |
10991 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
10992 | ||
10993 | /* until_break_fsm's vtable. */ | |
10994 | ||
10995 | static struct thread_fsm_ops until_break_fsm_ops = | |
10996 | { | |
10997 | NULL, /* dtor */ | |
10998 | until_break_fsm_clean_up, | |
10999 | until_break_fsm_should_stop, | |
11000 | NULL, /* return_value */ | |
11001 | until_break_fsm_async_reply_reason, | |
11002 | }; | |
11003 | ||
11004 | /* Allocate a new until_break_command_fsm. */ | |
11005 | ||
11006 | static struct until_break_fsm * | |
8980e177 | 11007 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
454dafbd TT |
11008 | breakpoint_up &&location_breakpoint, |
11009 | breakpoint_up &&caller_breakpoint) | |
cfc31633 PA |
11010 | { |
11011 | struct until_break_fsm *sm; | |
11012 | ||
11013 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11014 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11015 | |
11016 | sm->thread = thread; | |
454dafbd TT |
11017 | sm->location_breakpoint = location_breakpoint.release (); |
11018 | sm->caller_breakpoint = caller_breakpoint.release (); | |
cfc31633 PA |
11019 | |
11020 | return sm; | |
11021 | } | |
11022 | ||
11023 | /* Implementation of the 'should_stop' FSM method for the | |
11024 | until(location)/advance commands. */ | |
11025 | ||
11026 | static int | |
8980e177 PA |
11027 | until_break_fsm_should_stop (struct thread_fsm *self, |
11028 | struct thread_info *tp) | |
cfc31633 PA |
11029 | { |
11030 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11031 | |
11032 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11033 | sm->location_breakpoint) != NULL | |
11034 | || (sm->caller_breakpoint != NULL | |
11035 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11036 | sm->caller_breakpoint) != NULL)) | |
11037 | thread_fsm_set_finished (self); | |
11038 | ||
11039 | return 1; | |
11040 | } | |
11041 | ||
11042 | /* Implementation of the 'clean_up' FSM method for the | |
11043 | until(location)/advance commands. */ | |
11044 | ||
c2c6d25f | 11045 | static void |
8980e177 PA |
11046 | until_break_fsm_clean_up (struct thread_fsm *self, |
11047 | struct thread_info *thread) | |
43ff13b4 | 11048 | { |
cfc31633 | 11049 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11050 | |
cfc31633 PA |
11051 | /* Clean up our temporary breakpoints. */ |
11052 | if (sm->location_breakpoint != NULL) | |
11053 | { | |
11054 | delete_breakpoint (sm->location_breakpoint); | |
11055 | sm->location_breakpoint = NULL; | |
11056 | } | |
11057 | if (sm->caller_breakpoint != NULL) | |
11058 | { | |
11059 | delete_breakpoint (sm->caller_breakpoint); | |
11060 | sm->caller_breakpoint = NULL; | |
11061 | } | |
11062 | delete_longjmp_breakpoint (sm->thread); | |
11063 | } | |
11064 | ||
11065 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11066 | until(location)/advance commands. */ | |
11067 | ||
11068 | static enum async_reply_reason | |
11069 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11070 | { | |
11071 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11072 | } |
11073 | ||
c906108c | 11074 | void |
f2fc3015 | 11075 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11076 | { |
8556afb4 PA |
11077 | struct frame_info *frame; |
11078 | struct gdbarch *frame_gdbarch; | |
11079 | struct frame_id stack_frame_id; | |
11080 | struct frame_id caller_frame_id; | |
ffc2605c | 11081 | struct cleanup *old_chain; |
186c406b TT |
11082 | int thread; |
11083 | struct thread_info *tp; | |
cfc31633 | 11084 | struct until_break_fsm *sm; |
c906108c | 11085 | |
70509625 | 11086 | clear_proceed_status (0); |
c906108c SS |
11087 | |
11088 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11089 | this function. */ |
c5aa993b | 11090 | |
ffc2605c | 11091 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11092 | |
6c5b2ebe PA |
11093 | std::vector<symtab_and_line> sals |
11094 | = (last_displayed_sal_is_valid () | |
11095 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11096 | get_last_displayed_symtab (), | |
11097 | get_last_displayed_line ()) | |
11098 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11099 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11100 | |
6c5b2ebe | 11101 | if (sals.size () != 1) |
8a3fe4f8 | 11102 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11103 | |
6c5b2ebe | 11104 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11105 | |
c906108c | 11106 | if (*arg) |
8a3fe4f8 | 11107 | error (_("Junk at end of arguments.")); |
c5aa993b | 11108 | |
c906108c | 11109 | resolve_sal_pc (&sal); |
c5aa993b | 11110 | |
186c406b | 11111 | tp = inferior_thread (); |
5d5658a1 | 11112 | thread = tp->global_num; |
186c406b | 11113 | |
883bc8d1 PA |
11114 | old_chain = make_cleanup (null_cleanup, NULL); |
11115 | ||
8556afb4 PA |
11116 | /* Note linespec handling above invalidates the frame chain. |
11117 | Installing a breakpoint also invalidates the frame chain (as it | |
11118 | may need to switch threads), so do any frame handling before | |
11119 | that. */ | |
11120 | ||
11121 | frame = get_selected_frame (NULL); | |
11122 | frame_gdbarch = get_frame_arch (frame); | |
11123 | stack_frame_id = get_stack_frame_id (frame); | |
11124 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11125 | |
ae66c1fc EZ |
11126 | /* Keep within the current frame, or in frames called by the current |
11127 | one. */ | |
edb3359d | 11128 | |
454dafbd | 11129 | breakpoint_up caller_breakpoint; |
883bc8d1 | 11130 | if (frame_id_p (caller_frame_id)) |
c906108c | 11131 | { |
883bc8d1 | 11132 | struct symtab_and_line sal2; |
cfc31633 | 11133 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11134 | |
11135 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11136 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11137 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11138 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11139 | sal2, | |
11140 | caller_frame_id, | |
11141 | bp_until); | |
186c406b | 11142 | |
883bc8d1 | 11143 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11144 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11145 | } |
c5aa993b | 11146 | |
c70a6932 JK |
11147 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11148 | frame = NULL; | |
11149 | ||
454dafbd | 11150 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11151 | if (anywhere) |
11152 | /* If the user told us to continue until a specified location, | |
11153 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11154 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11155 | null_frame_id, bp_until); | |
883bc8d1 PA |
11156 | else |
11157 | /* Otherwise, specify the selected frame, because we want to stop | |
11158 | only at the very same frame. */ | |
cfc31633 PA |
11159 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11160 | stack_frame_id, bp_until); | |
883bc8d1 | 11161 | |
8980e177 | 11162 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
454dafbd TT |
11163 | std::move (location_breakpoint), |
11164 | std::move (caller_breakpoint)); | |
cfc31633 | 11165 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11166 | |
cfc31633 | 11167 | discard_cleanups (old_chain); |
f107f563 | 11168 | |
cfc31633 | 11169 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11170 | } |
ae66c1fc | 11171 | |
c906108c SS |
11172 | /* This function attempts to parse an optional "if <cond>" clause |
11173 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11174 | |
c906108c SS |
11175 | Else, it returns a pointer to the condition string. (It does not |
11176 | attempt to evaluate the string against a particular block.) And, | |
11177 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11178 | if clause in the arg string. */ |
53a5351d | 11179 | |
63160a43 PA |
11180 | const char * |
11181 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11182 | { |
63160a43 | 11183 | const char *cond_string; |
c5aa993b JM |
11184 | |
11185 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11186 | return NULL; |
c5aa993b | 11187 | |
4a64f543 | 11188 | /* Skip the "if" keyword. */ |
c906108c | 11189 | (*arg) += 2; |
c5aa993b | 11190 | |
c906108c | 11191 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11192 | condition string. */ |
f1735a53 | 11193 | *arg = skip_spaces (*arg); |
c906108c | 11194 | cond_string = *arg; |
c5aa993b | 11195 | |
4a64f543 MS |
11196 | /* Assume that the condition occupies the remainder of the arg |
11197 | string. */ | |
c906108c | 11198 | (*arg) += strlen (cond_string); |
c5aa993b | 11199 | |
c906108c SS |
11200 | return cond_string; |
11201 | } | |
c5aa993b | 11202 | |
c906108c SS |
11203 | /* Commands to deal with catching events, such as signals, exceptions, |
11204 | process start/exit, etc. */ | |
c5aa993b JM |
11205 | |
11206 | typedef enum | |
11207 | { | |
44feb3ce TT |
11208 | catch_fork_temporary, catch_vfork_temporary, |
11209 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11210 | } |
11211 | catch_fork_kind; | |
11212 | ||
c906108c | 11213 | static void |
eb4c3f4a | 11214 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11215 | struct cmd_list_element *command) |
c906108c | 11216 | { |
a6d9a66e | 11217 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11218 | const char *cond_string = NULL; |
44feb3ce TT |
11219 | catch_fork_kind fork_kind; |
11220 | int tempflag; | |
11221 | ||
11222 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11223 | tempflag = (fork_kind == catch_fork_temporary | |
11224 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11225 | |
44feb3ce TT |
11226 | if (!arg) |
11227 | arg = ""; | |
f1735a53 | 11228 | arg = skip_spaces (arg); |
c5aa993b | 11229 | |
c906108c | 11230 | /* The allowed syntax is: |
c5aa993b JM |
11231 | catch [v]fork |
11232 | catch [v]fork if <cond> | |
11233 | ||
4a64f543 | 11234 | First, check if there's an if clause. */ |
c906108c | 11235 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11236 | |
c906108c | 11237 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11238 | error (_("Junk at end of arguments.")); |
c5aa993b | 11239 | |
c906108c | 11240 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11241 | and enable reporting of such events. */ |
c5aa993b JM |
11242 | switch (fork_kind) |
11243 | { | |
44feb3ce TT |
11244 | case catch_fork_temporary: |
11245 | case catch_fork_permanent: | |
a6d9a66e | 11246 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11247 | &catch_fork_breakpoint_ops); |
c906108c | 11248 | break; |
44feb3ce TT |
11249 | case catch_vfork_temporary: |
11250 | case catch_vfork_permanent: | |
a6d9a66e | 11251 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11252 | &catch_vfork_breakpoint_ops); |
c906108c | 11253 | break; |
c5aa993b | 11254 | default: |
8a3fe4f8 | 11255 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11256 | break; |
c5aa993b | 11257 | } |
c906108c SS |
11258 | } |
11259 | ||
11260 | static void | |
eb4c3f4a | 11261 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11262 | struct cmd_list_element *command) |
c906108c | 11263 | { |
a6d9a66e | 11264 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11265 | int tempflag; |
63160a43 | 11266 | const char *cond_string = NULL; |
c906108c | 11267 | |
44feb3ce TT |
11268 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11269 | ||
11270 | if (!arg) | |
11271 | arg = ""; | |
f1735a53 | 11272 | arg = skip_spaces (arg); |
c906108c SS |
11273 | |
11274 | /* The allowed syntax is: | |
c5aa993b JM |
11275 | catch exec |
11276 | catch exec if <cond> | |
c906108c | 11277 | |
4a64f543 | 11278 | First, check if there's an if clause. */ |
c906108c SS |
11279 | cond_string = ep_parse_optional_if_clause (&arg); |
11280 | ||
11281 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11282 | error (_("Junk at end of arguments.")); |
c906108c | 11283 | |
b270e6f9 TT |
11284 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11285 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11286 | &catch_exec_breakpoint_ops); |
11287 | c->exec_pathname = NULL; | |
11288 | ||
b270e6f9 | 11289 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11290 | } |
c5aa993b | 11291 | |
9ac4176b | 11292 | void |
28010a5d PA |
11293 | init_ada_exception_breakpoint (struct breakpoint *b, |
11294 | struct gdbarch *gdbarch, | |
11295 | struct symtab_and_line sal, | |
f2fc3015 | 11296 | const char *addr_string, |
c0a91b2b | 11297 | const struct breakpoint_ops *ops, |
28010a5d | 11298 | int tempflag, |
349774ef | 11299 | int enabled, |
28010a5d | 11300 | int from_tty) |
f7f9143b | 11301 | { |
f7f9143b JB |
11302 | if (from_tty) |
11303 | { | |
5af949e3 UW |
11304 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11305 | if (!loc_gdbarch) | |
11306 | loc_gdbarch = gdbarch; | |
11307 | ||
6c95b8df PA |
11308 | describe_other_breakpoints (loc_gdbarch, |
11309 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11310 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11311 | version for exception catchpoints, because two catchpoints | |
11312 | used for different exception names will use the same address. | |
11313 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11314 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11315 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11316 | the user what type of catchpoint it is. The above is good |
11317 | enough for now, though. */ | |
11318 | } | |
11319 | ||
28010a5d | 11320 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11321 | |
349774ef | 11322 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11323 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11324 | b->location = string_to_event_location (&addr_string, |
11325 | language_def (language_ada)); | |
f7f9143b | 11326 | b->language = language_ada; |
f7f9143b JB |
11327 | } |
11328 | ||
c906108c | 11329 | static void |
981a3fb3 | 11330 | catch_command (const char *arg, int from_tty) |
c906108c | 11331 | { |
44feb3ce | 11332 | error (_("Catch requires an event name.")); |
c906108c SS |
11333 | } |
11334 | \f | |
11335 | ||
11336 | static void | |
981a3fb3 | 11337 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11338 | { |
44feb3ce | 11339 | error (_("Catch requires an event name.")); |
c906108c SS |
11340 | } |
11341 | ||
81b1e71c | 11342 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11343 | |
11344 | static int | |
81b1e71c | 11345 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11346 | { |
81b1e71c TT |
11347 | uintptr_t ua = (uintptr_t) a; |
11348 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11349 | |
81b1e71c | 11350 | if (a->number < b->number) |
8a2c437b | 11351 | return -1; |
81b1e71c | 11352 | else if (a->number > b->number) |
8a2c437b TT |
11353 | return 1; |
11354 | ||
11355 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11356 | the number 0. */ | |
11357 | if (ua < ub) | |
11358 | return -1; | |
94b0e70d | 11359 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11360 | } |
11361 | ||
80f8a6eb | 11362 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11363 | |
11364 | static void | |
0b39b52e | 11365 | clear_command (const char *arg, int from_tty) |
c906108c | 11366 | { |
81b1e71c | 11367 | struct breakpoint *b; |
c906108c | 11368 | int default_match; |
c906108c | 11369 | |
6c5b2ebe PA |
11370 | std::vector<symtab_and_line> decoded_sals; |
11371 | symtab_and_line last_sal; | |
11372 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11373 | if (arg) |
11374 | { | |
6c5b2ebe PA |
11375 | decoded_sals |
11376 | = decode_line_with_current_source (arg, | |
11377 | (DECODE_LINE_FUNFIRSTLINE | |
11378 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11379 | default_match = 0; |
6c5b2ebe | 11380 | sals = decoded_sals; |
c906108c SS |
11381 | } |
11382 | else | |
11383 | { | |
1bfeeb0f JL |
11384 | /* Set sal's line, symtab, pc, and pspace to the values |
11385 | corresponding to the last call to print_frame_info. If the | |
11386 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11387 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11388 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11389 | error (_("No source file specified.")); |
c906108c | 11390 | |
c906108c | 11391 | default_match = 1; |
6c5b2ebe | 11392 | sals = last_sal; |
c906108c SS |
11393 | } |
11394 | ||
4a64f543 MS |
11395 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11396 | seems, because all existing breakpoints typically have both | |
11397 | file/line and pc set. So, if clear is given file/line, we can | |
11398 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11399 | |
11400 | We only support clearing given the address explicitly | |
11401 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11402 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11403 | due to optimization, all in one block. |
4a64f543 MS |
11404 | |
11405 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11406 | PC corresponding to the same file:line, the breakpoint won't |
11407 | be cleared. We probably can still clear the breakpoint, but | |
11408 | since the other PC value is never presented to user, user | |
11409 | can only find it by guessing, and it does not seem important | |
11410 | to support that. */ | |
11411 | ||
4a64f543 MS |
11412 | /* For each line spec given, delete bps which correspond to it. Do |
11413 | it in two passes, solely to preserve the current behavior that | |
11414 | from_tty is forced true if we delete more than one | |
11415 | breakpoint. */ | |
c906108c | 11416 | |
81b1e71c | 11417 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11418 | for (const auto &sal : sals) |
c906108c | 11419 | { |
05cba821 JK |
11420 | const char *sal_fullname; |
11421 | ||
c906108c | 11422 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11423 | If line given (pc == 0), clear all bpts on specified line. |
11424 | If defaulting, clear all bpts on default line | |
c906108c | 11425 | or at default pc. |
c5aa993b JM |
11426 | |
11427 | defaulting sal.pc != 0 tests to do | |
11428 | ||
11429 | 0 1 pc | |
11430 | 1 1 pc _and_ line | |
11431 | 0 0 line | |
11432 | 1 0 <can't happen> */ | |
c906108c | 11433 | |
05cba821 JK |
11434 | sal_fullname = (sal.symtab == NULL |
11435 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11436 | |
4a64f543 | 11437 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11438 | ALL_BREAKPOINTS (b) |
c5aa993b | 11439 | { |
0d381245 | 11440 | int match = 0; |
4a64f543 | 11441 | /* Are we going to delete b? */ |
cc60f2e3 | 11442 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11443 | { |
11444 | struct bp_location *loc = b->loc; | |
11445 | for (; loc; loc = loc->next) | |
11446 | { | |
f8eba3c6 TT |
11447 | /* If the user specified file:line, don't allow a PC |
11448 | match. This matches historical gdb behavior. */ | |
11449 | int pc_match = (!sal.explicit_line | |
11450 | && sal.pc | |
11451 | && (loc->pspace == sal.pspace) | |
11452 | && (loc->address == sal.pc) | |
11453 | && (!section_is_overlay (loc->section) | |
11454 | || loc->section == sal.section)); | |
4aac40c8 TT |
11455 | int line_match = 0; |
11456 | ||
11457 | if ((default_match || sal.explicit_line) | |
2f202fde | 11458 | && loc->symtab != NULL |
05cba821 | 11459 | && sal_fullname != NULL |
4aac40c8 | 11460 | && sal.pspace == loc->pspace |
05cba821 JK |
11461 | && loc->line_number == sal.line |
11462 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11463 | sal_fullname) == 0) | |
11464 | line_match = 1; | |
4aac40c8 | 11465 | |
0d381245 VP |
11466 | if (pc_match || line_match) |
11467 | { | |
11468 | match = 1; | |
11469 | break; | |
11470 | } | |
11471 | } | |
11472 | } | |
11473 | ||
11474 | if (match) | |
81b1e71c | 11475 | found.push_back (b); |
c906108c | 11476 | } |
80f8a6eb | 11477 | } |
8a2c437b | 11478 | |
80f8a6eb | 11479 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11480 | if (found.empty ()) |
80f8a6eb MS |
11481 | { |
11482 | if (arg) | |
8a3fe4f8 | 11483 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11484 | else |
8a3fe4f8 | 11485 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11486 | } |
c906108c | 11487 | |
8a2c437b | 11488 | /* Remove duplicates from the vec. */ |
81b1e71c | 11489 | std::sort (found.begin (), found.end (), |
b926417a | 11490 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11491 | { |
b926417a | 11492 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11493 | }); |
11494 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11495 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11496 | { |
b926417a | 11497 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11498 | }), |
11499 | found.end ()); | |
8a2c437b | 11500 | |
81b1e71c | 11501 | if (found.size () > 1) |
4a64f543 | 11502 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11503 | if (from_tty) |
a3f17187 | 11504 | { |
81b1e71c | 11505 | if (found.size () == 1) |
a3f17187 AC |
11506 | printf_unfiltered (_("Deleted breakpoint ")); |
11507 | else | |
11508 | printf_unfiltered (_("Deleted breakpoints ")); | |
11509 | } | |
d6e956e5 | 11510 | |
81b1e71c | 11511 | for (breakpoint *iter : found) |
80f8a6eb | 11512 | { |
c5aa993b | 11513 | if (from_tty) |
81b1e71c TT |
11514 | printf_unfiltered ("%d ", iter->number); |
11515 | delete_breakpoint (iter); | |
c906108c | 11516 | } |
80f8a6eb MS |
11517 | if (from_tty) |
11518 | putchar_unfiltered ('\n'); | |
c906108c SS |
11519 | } |
11520 | \f | |
11521 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11522 | all breakpoints that are marked for deletion, whether hit or not. | |
11523 | This is called after any breakpoint is hit, or after errors. */ | |
11524 | ||
11525 | void | |
fba45db2 | 11526 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11527 | { |
35df4500 | 11528 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11529 | |
11530 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11531 | if (bs->breakpoint_at |
11532 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11533 | && bs->stop) |
f431efe5 | 11534 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11535 | |
35df4500 | 11536 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11537 | { |
b5de0fa7 | 11538 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11539 | delete_breakpoint (b); |
11540 | } | |
c906108c SS |
11541 | } |
11542 | ||
4a64f543 MS |
11543 | /* A comparison function for bp_location AP and BP being interfaced to |
11544 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11545 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11546 | secondarily by ordering first permanent elements and |
4a64f543 | 11547 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11548 | qsort being an unstable algorithm. */ |
876fa593 JK |
11549 | |
11550 | static int | |
f5336ca5 | 11551 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11552 | { |
9a3c8263 SM |
11553 | const struct bp_location *a = *(const struct bp_location **) ap; |
11554 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11555 | |
11556 | if (a->address != b->address) | |
11557 | return (a->address > b->address) - (a->address < b->address); | |
11558 | ||
dea2aa5f LM |
11559 | /* Sort locations at the same address by their pspace number, keeping |
11560 | locations of the same inferior (in a multi-inferior environment) | |
11561 | grouped. */ | |
11562 | ||
11563 | if (a->pspace->num != b->pspace->num) | |
11564 | return ((a->pspace->num > b->pspace->num) | |
11565 | - (a->pspace->num < b->pspace->num)); | |
11566 | ||
876fa593 | 11567 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11568 | if (a->permanent != b->permanent) |
11569 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11570 | |
c56a97f9 JK |
11571 | /* Make the internal GDB representation stable across GDB runs |
11572 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11573 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11574 | |
11575 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11576 | return ((a->owner->number > b->owner->number) |
11577 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11578 | |
11579 | return (a > b) - (a < b); | |
11580 | } | |
11581 | ||
f5336ca5 PA |
11582 | /* Set bp_locations_placed_address_before_address_max and |
11583 | bp_locations_shadow_len_after_address_max according to the current | |
11584 | content of the bp_locations array. */ | |
f7545552 TT |
11585 | |
11586 | static void | |
f5336ca5 | 11587 | bp_locations_target_extensions_update (void) |
f7545552 | 11588 | { |
876fa593 JK |
11589 | struct bp_location *bl, **blp_tmp; |
11590 | ||
f5336ca5 PA |
11591 | bp_locations_placed_address_before_address_max = 0; |
11592 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11593 | |
11594 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11595 | { | |
11596 | CORE_ADDR start, end, addr; | |
11597 | ||
11598 | if (!bp_location_has_shadow (bl)) | |
11599 | continue; | |
11600 | ||
11601 | start = bl->target_info.placed_address; | |
11602 | end = start + bl->target_info.shadow_len; | |
11603 | ||
11604 | gdb_assert (bl->address >= start); | |
11605 | addr = bl->address - start; | |
f5336ca5 PA |
11606 | if (addr > bp_locations_placed_address_before_address_max) |
11607 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11608 | |
11609 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11610 | ||
11611 | gdb_assert (bl->address < end); | |
11612 | addr = end - bl->address; | |
f5336ca5 PA |
11613 | if (addr > bp_locations_shadow_len_after_address_max) |
11614 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11615 | } |
f7545552 TT |
11616 | } |
11617 | ||
1e4d1764 YQ |
11618 | /* Download tracepoint locations if they haven't been. */ |
11619 | ||
11620 | static void | |
11621 | download_tracepoint_locations (void) | |
11622 | { | |
7ed2c994 | 11623 | struct breakpoint *b; |
dd2e65cc | 11624 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11625 | |
5ed8105e | 11626 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11627 | |
7ed2c994 | 11628 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11629 | { |
7ed2c994 | 11630 | struct bp_location *bl; |
1e4d1764 | 11631 | struct tracepoint *t; |
f2a8bc8a | 11632 | int bp_location_downloaded = 0; |
1e4d1764 | 11633 | |
7ed2c994 | 11634 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11635 | ? !may_insert_fast_tracepoints |
11636 | : !may_insert_tracepoints)) | |
11637 | continue; | |
11638 | ||
dd2e65cc YQ |
11639 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11640 | { | |
11641 | if (target_can_download_tracepoint ()) | |
11642 | can_download_tracepoint = TRIBOOL_TRUE; | |
11643 | else | |
11644 | can_download_tracepoint = TRIBOOL_FALSE; | |
11645 | } | |
11646 | ||
11647 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11648 | break; | |
11649 | ||
7ed2c994 YQ |
11650 | for (bl = b->loc; bl; bl = bl->next) |
11651 | { | |
11652 | /* In tracepoint, locations are _never_ duplicated, so | |
11653 | should_be_inserted is equivalent to | |
11654 | unduplicated_should_be_inserted. */ | |
11655 | if (!should_be_inserted (bl) || bl->inserted) | |
11656 | continue; | |
1e4d1764 | 11657 | |
7ed2c994 | 11658 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11659 | |
7ed2c994 | 11660 | target_download_tracepoint (bl); |
1e4d1764 | 11661 | |
7ed2c994 | 11662 | bl->inserted = 1; |
f2a8bc8a | 11663 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11664 | } |
11665 | t = (struct tracepoint *) b; | |
11666 | t->number_on_target = b->number; | |
f2a8bc8a | 11667 | if (bp_location_downloaded) |
76727919 | 11668 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11669 | } |
1e4d1764 YQ |
11670 | } |
11671 | ||
934709f0 PW |
11672 | /* Swap the insertion/duplication state between two locations. */ |
11673 | ||
11674 | static void | |
11675 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11676 | { | |
11677 | const int left_inserted = left->inserted; | |
11678 | const int left_duplicate = left->duplicate; | |
b775012e | 11679 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11680 | const struct bp_target_info left_target_info = left->target_info; |
11681 | ||
1e4d1764 YQ |
11682 | /* Locations of tracepoints can never be duplicated. */ |
11683 | if (is_tracepoint (left->owner)) | |
11684 | gdb_assert (!left->duplicate); | |
11685 | if (is_tracepoint (right->owner)) | |
11686 | gdb_assert (!right->duplicate); | |
11687 | ||
934709f0 PW |
11688 | left->inserted = right->inserted; |
11689 | left->duplicate = right->duplicate; | |
b775012e | 11690 | left->needs_update = right->needs_update; |
934709f0 PW |
11691 | left->target_info = right->target_info; |
11692 | right->inserted = left_inserted; | |
11693 | right->duplicate = left_duplicate; | |
b775012e | 11694 | right->needs_update = left_needs_update; |
934709f0 PW |
11695 | right->target_info = left_target_info; |
11696 | } | |
11697 | ||
b775012e LM |
11698 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11699 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11700 | conditions on the target's side. Such conditions need to be updated on | |
11701 | the target. */ | |
11702 | ||
11703 | static void | |
11704 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11705 | { | |
11706 | struct bp_location **locp = NULL, **loc2p; | |
11707 | struct bp_location *loc; | |
11708 | CORE_ADDR address = 0; | |
11709 | int pspace_num; | |
11710 | ||
11711 | address = bl->address; | |
11712 | pspace_num = bl->pspace->num; | |
11713 | ||
11714 | /* This is only meaningful if the target is | |
11715 | evaluating conditions and if the user has | |
11716 | opted for condition evaluation on the target's | |
11717 | side. */ | |
11718 | if (gdb_evaluates_breakpoint_condition_p () | |
11719 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11720 | return; | |
11721 | ||
11722 | /* Flag all breakpoint locations with this address and | |
11723 | the same program space as the location | |
11724 | as "its condition has changed". We need to | |
11725 | update the conditions on the target's side. */ | |
11726 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11727 | { | |
11728 | loc = *loc2p; | |
11729 | ||
11730 | if (!is_breakpoint (loc->owner) | |
11731 | || pspace_num != loc->pspace->num) | |
11732 | continue; | |
11733 | ||
11734 | /* Flag the location appropriately. We use a different state to | |
11735 | let everyone know that we already updated the set of locations | |
11736 | with addr bl->address and program space bl->pspace. This is so | |
11737 | we don't have to keep calling these functions just to mark locations | |
11738 | that have already been marked. */ | |
11739 | loc->condition_changed = condition_updated; | |
11740 | ||
11741 | /* Free the agent expression bytecode as well. We will compute | |
11742 | it later on. */ | |
833177a4 | 11743 | loc->cond_bytecode.reset (); |
b775012e LM |
11744 | } |
11745 | } | |
44702360 PA |
11746 | /* Called whether new breakpoints are created, or existing breakpoints |
11747 | deleted, to update the global location list and recompute which | |
11748 | locations are duplicate of which. | |
b775012e | 11749 | |
04086b45 PA |
11750 | The INSERT_MODE flag determines whether locations may not, may, or |
11751 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11752 | info. */ | |
b60e7edf | 11753 | |
0d381245 | 11754 | static void |
44702360 | 11755 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11756 | { |
74960c60 | 11757 | struct breakpoint *b; |
876fa593 | 11758 | struct bp_location **locp, *loc; |
b775012e LM |
11759 | /* Last breakpoint location address that was marked for update. */ |
11760 | CORE_ADDR last_addr = 0; | |
11761 | /* Last breakpoint location program space that was marked for update. */ | |
11762 | int last_pspace_num = -1; | |
f7545552 | 11763 | |
2d134ed3 PA |
11764 | /* Used in the duplicates detection below. When iterating over all |
11765 | bp_locations, points to the first bp_location of a given address. | |
11766 | Breakpoints and watchpoints of different types are never | |
11767 | duplicates of each other. Keep one pointer for each type of | |
11768 | breakpoint/watchpoint, so we only need to loop over all locations | |
11769 | once. */ | |
11770 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11771 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11772 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11773 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11774 | |
f5336ca5 PA |
11775 | /* Saved former bp_locations array which we compare against the newly |
11776 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11777 | struct bp_location **old_locp; |
f5336ca5 | 11778 | unsigned old_locations_count; |
81b1e71c | 11779 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11780 | |
f5336ca5 PA |
11781 | old_locations_count = bp_locations_count; |
11782 | bp_locations = NULL; | |
11783 | bp_locations_count = 0; | |
0d381245 | 11784 | |
74960c60 | 11785 | ALL_BREAKPOINTS (b) |
876fa593 | 11786 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11787 | bp_locations_count++; |
876fa593 | 11788 | |
f5336ca5 PA |
11789 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11790 | locp = bp_locations; | |
876fa593 JK |
11791 | ALL_BREAKPOINTS (b) |
11792 | for (loc = b->loc; loc; loc = loc->next) | |
11793 | *locp++ = loc; | |
f5336ca5 PA |
11794 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11795 | bp_locations_compare); | |
876fa593 | 11796 | |
f5336ca5 | 11797 | bp_locations_target_extensions_update (); |
74960c60 | 11798 | |
4a64f543 MS |
11799 | /* Identify bp_location instances that are no longer present in the |
11800 | new list, and therefore should be freed. Note that it's not | |
11801 | necessary that those locations should be removed from inferior -- | |
11802 | if there's another location at the same address (previously | |
11803 | marked as duplicate), we don't need to remove/insert the | |
11804 | location. | |
876fa593 | 11805 | |
4a64f543 MS |
11806 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11807 | and former bp_location array state respectively. */ | |
876fa593 | 11808 | |
f5336ca5 | 11809 | locp = bp_locations; |
81b1e71c TT |
11810 | for (old_locp = old_locations.get (); |
11811 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11812 | old_locp++) |
74960c60 | 11813 | { |
876fa593 | 11814 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11815 | struct bp_location **loc2p; |
876fa593 | 11816 | |
e5dd4106 | 11817 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11818 | not, we have to free it. */ |
c7d46a38 | 11819 | int found_object = 0; |
20874c92 VP |
11820 | /* Tells if the location should remain inserted in the target. */ |
11821 | int keep_in_target = 0; | |
11822 | int removed = 0; | |
876fa593 | 11823 | |
4a64f543 MS |
11824 | /* Skip LOCP entries which will definitely never be needed. |
11825 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11826 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11827 | && (*locp)->address < old_loc->address) |
876fa593 | 11828 | locp++; |
c7d46a38 PA |
11829 | |
11830 | for (loc2p = locp; | |
f5336ca5 | 11831 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11832 | && (*loc2p)->address == old_loc->address); |
11833 | loc2p++) | |
11834 | { | |
b775012e LM |
11835 | /* Check if this is a new/duplicated location or a duplicated |
11836 | location that had its condition modified. If so, we want to send | |
11837 | its condition to the target if evaluation of conditions is taking | |
11838 | place there. */ | |
11839 | if ((*loc2p)->condition_changed == condition_modified | |
11840 | && (last_addr != old_loc->address | |
11841 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11842 | { |
b775012e LM |
11843 | force_breakpoint_reinsertion (*loc2p); |
11844 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11845 | } |
b775012e LM |
11846 | |
11847 | if (*loc2p == old_loc) | |
11848 | found_object = 1; | |
c7d46a38 | 11849 | } |
74960c60 | 11850 | |
b775012e LM |
11851 | /* We have already handled this address, update it so that we don't |
11852 | have to go through updates again. */ | |
11853 | last_addr = old_loc->address; | |
11854 | ||
11855 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11856 | if (!found_object) | |
11857 | force_breakpoint_reinsertion (old_loc); | |
11858 | ||
4a64f543 MS |
11859 | /* If this location is no longer present, and inserted, look if |
11860 | there's maybe a new location at the same address. If so, | |
11861 | mark that one inserted, and don't remove this one. This is | |
11862 | needed so that we don't have a time window where a breakpoint | |
11863 | at certain location is not inserted. */ | |
74960c60 | 11864 | |
876fa593 | 11865 | if (old_loc->inserted) |
0d381245 | 11866 | { |
4a64f543 MS |
11867 | /* If the location is inserted now, we might have to remove |
11868 | it. */ | |
74960c60 | 11869 | |
876fa593 | 11870 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11871 | { |
4a64f543 MS |
11872 | /* The location is still present in the location list, |
11873 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11874 | keep_in_target = 1; |
74960c60 VP |
11875 | } |
11876 | else | |
11877 | { | |
b775012e LM |
11878 | /* This location still exists, but it won't be kept in the |
11879 | target since it may have been disabled. We proceed to | |
11880 | remove its target-side condition. */ | |
11881 | ||
4a64f543 MS |
11882 | /* The location is either no longer present, or got |
11883 | disabled. See if there's another location at the | |
11884 | same address, in which case we don't need to remove | |
11885 | this one from the target. */ | |
876fa593 | 11886 | |
2bdf28a0 | 11887 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11888 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11889 | { | |
876fa593 | 11890 | for (loc2p = locp; |
f5336ca5 | 11891 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11892 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11893 | loc2p++) |
11894 | { | |
11895 | struct bp_location *loc2 = *loc2p; | |
11896 | ||
2d134ed3 | 11897 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11898 | { |
85d721b8 PA |
11899 | /* Read watchpoint locations are switched to |
11900 | access watchpoints, if the former are not | |
11901 | supported, but the latter are. */ | |
11902 | if (is_hardware_watchpoint (old_loc->owner)) | |
11903 | { | |
11904 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11905 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11906 | } | |
11907 | ||
934709f0 PW |
11908 | /* loc2 is a duplicated location. We need to check |
11909 | if it should be inserted in case it will be | |
11910 | unduplicated. */ | |
11911 | if (loc2 != old_loc | |
11912 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11913 | { |
934709f0 | 11914 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11915 | keep_in_target = 1; |
11916 | break; | |
11917 | } | |
876fa593 JK |
11918 | } |
11919 | } | |
11920 | } | |
74960c60 VP |
11921 | } |
11922 | ||
20874c92 VP |
11923 | if (!keep_in_target) |
11924 | { | |
834c0d03 | 11925 | if (remove_breakpoint (old_loc)) |
20874c92 | 11926 | { |
4a64f543 MS |
11927 | /* This is just about all we can do. We could keep |
11928 | this location on the global list, and try to | |
11929 | remove it next time, but there's no particular | |
11930 | reason why we will succeed next time. | |
20874c92 | 11931 | |
4a64f543 MS |
11932 | Note that at this point, old_loc->owner is still |
11933 | valid, as delete_breakpoint frees the breakpoint | |
11934 | only after calling us. */ | |
3e43a32a MS |
11935 | printf_filtered (_("warning: Error removing " |
11936 | "breakpoint %d\n"), | |
876fa593 | 11937 | old_loc->owner->number); |
20874c92 VP |
11938 | } |
11939 | removed = 1; | |
11940 | } | |
0d381245 | 11941 | } |
74960c60 VP |
11942 | |
11943 | if (!found_object) | |
1c5cfe86 | 11944 | { |
fbea99ea | 11945 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11946 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11947 | { |
db82e815 PA |
11948 | /* This location was removed from the target. In |
11949 | non-stop mode, a race condition is possible where | |
11950 | we've removed a breakpoint, but stop events for that | |
11951 | breakpoint are already queued and will arrive later. | |
11952 | We apply an heuristic to be able to distinguish such | |
11953 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11954 | breakpoint location for a bit, and will retire it | |
11955 | after we see some number of events. The theory here | |
11956 | is that reporting of events should, "on the average", | |
11957 | be fair, so after a while we'll see events from all | |
11958 | threads that have anything of interest, and no longer | |
11959 | need to keep this breakpoint location around. We | |
11960 | don't hold locations forever so to reduce chances of | |
11961 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11962 | SIGTRAP. | |
11963 | ||
11964 | The heuristic failing can be disastrous on | |
11965 | decr_pc_after_break targets. | |
11966 | ||
11967 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11968 | if we fail to recognize a late breakpoint SIGTRAP, | |
11969 | because events_till_retirement has reached 0 too | |
11970 | soon, we'll fail to do the PC adjustment, and report | |
11971 | a random SIGTRAP to the user. When the user resumes | |
11972 | the inferior, it will most likely immediately crash | |
2dec564e | 11973 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11974 | corrupted, because of being resumed e.g., in the |
11975 | middle of a multi-byte instruction, or skipped a | |
11976 | one-byte instruction. This was actually seen happen | |
11977 | on native x86-linux, and should be less rare on | |
11978 | targets that do not support new thread events, like | |
11979 | remote, due to the heuristic depending on | |
11980 | thread_count. | |
11981 | ||
11982 | Mistaking a random SIGTRAP for a breakpoint trap | |
11983 | causes similar symptoms (PC adjustment applied when | |
11984 | it shouldn't), but then again, playing with SIGTRAPs | |
11985 | behind the debugger's back is asking for trouble. | |
11986 | ||
11987 | Since hardware watchpoint traps are always | |
11988 | distinguishable from other traps, so we don't need to | |
11989 | apply keep hardware watchpoint moribund locations | |
11990 | around. We simply always ignore hardware watchpoint | |
11991 | traps we can no longer explain. */ | |
11992 | ||
876fa593 JK |
11993 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11994 | old_loc->owner = NULL; | |
20874c92 | 11995 | |
1123588c | 11996 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11997 | } |
11998 | else | |
f431efe5 PA |
11999 | { |
12000 | old_loc->owner = NULL; | |
12001 | decref_bp_location (&old_loc); | |
12002 | } | |
20874c92 | 12003 | } |
74960c60 | 12004 | } |
1c5cfe86 | 12005 | |
348d480f PA |
12006 | /* Rescan breakpoints at the same address and section, marking the |
12007 | first one as "first" and any others as "duplicates". This is so | |
12008 | that the bpt instruction is only inserted once. If we have a | |
12009 | permanent breakpoint at the same place as BPT, make that one the | |
12010 | official one, and the rest as duplicates. Permanent breakpoints | |
12011 | are sorted first for the same address. | |
12012 | ||
12013 | Do the same for hardware watchpoints, but also considering the | |
12014 | watchpoint's type (regular/access/read) and length. */ | |
12015 | ||
12016 | bp_loc_first = NULL; | |
12017 | wp_loc_first = NULL; | |
12018 | awp_loc_first = NULL; | |
12019 | rwp_loc_first = NULL; | |
12020 | ALL_BP_LOCATIONS (loc, locp) | |
12021 | { | |
12022 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12023 | non-NULL. */ | |
348d480f | 12024 | struct bp_location **loc_first_p; |
d3fbdd86 | 12025 | b = loc->owner; |
348d480f | 12026 | |
6f380991 | 12027 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12028 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12029 | /* Don't detect duplicate for tracepoint locations because they are |
12030 | never duplicated. See the comments in field `duplicate' of | |
12031 | `struct bp_location'. */ | |
348d480f | 12032 | || is_tracepoint (b)) |
b775012e LM |
12033 | { |
12034 | /* Clear the condition modification flag. */ | |
12035 | loc->condition_changed = condition_unchanged; | |
12036 | continue; | |
12037 | } | |
348d480f | 12038 | |
348d480f PA |
12039 | if (b->type == bp_hardware_watchpoint) |
12040 | loc_first_p = &wp_loc_first; | |
12041 | else if (b->type == bp_read_watchpoint) | |
12042 | loc_first_p = &rwp_loc_first; | |
12043 | else if (b->type == bp_access_watchpoint) | |
12044 | loc_first_p = &awp_loc_first; | |
12045 | else | |
12046 | loc_first_p = &bp_loc_first; | |
12047 | ||
12048 | if (*loc_first_p == NULL | |
12049 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12050 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12051 | { | |
12052 | *loc_first_p = loc; | |
12053 | loc->duplicate = 0; | |
b775012e LM |
12054 | |
12055 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12056 | { | |
12057 | loc->needs_update = 1; | |
12058 | /* Clear the condition modification flag. */ | |
12059 | loc->condition_changed = condition_unchanged; | |
12060 | } | |
348d480f PA |
12061 | continue; |
12062 | } | |
12063 | ||
934709f0 PW |
12064 | |
12065 | /* This and the above ensure the invariant that the first location | |
12066 | is not duplicated, and is the inserted one. | |
12067 | All following are marked as duplicated, and are not inserted. */ | |
12068 | if (loc->inserted) | |
12069 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12070 | loc->duplicate = 1; |
12071 | ||
b775012e LM |
12072 | /* Clear the condition modification flag. */ |
12073 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12074 | } |
12075 | ||
a25a5a45 | 12076 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12077 | { |
04086b45 | 12078 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12079 | insert_breakpoint_locations (); |
12080 | else | |
12081 | { | |
44702360 PA |
12082 | /* Even though the caller told us to not insert new |
12083 | locations, we may still need to update conditions on the | |
12084 | target's side of breakpoints that were already inserted | |
12085 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12086 | only update conditions for locations that are marked |
12087 | "needs_update". */ | |
12088 | update_inserted_breakpoint_locations (); | |
12089 | } | |
12090 | } | |
348d480f | 12091 | |
04086b45 | 12092 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12093 | download_tracepoint_locations (); |
348d480f PA |
12094 | } |
12095 | ||
12096 | void | |
12097 | breakpoint_retire_moribund (void) | |
12098 | { | |
1123588c TT |
12099 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12100 | { | |
12101 | struct bp_location *loc = moribund_locations[ix]; | |
12102 | if (--(loc->events_till_retirement) == 0) | |
12103 | { | |
12104 | decref_bp_location (&loc); | |
12105 | unordered_remove (moribund_locations, ix); | |
12106 | --ix; | |
12107 | } | |
12108 | } | |
348d480f PA |
12109 | } |
12110 | ||
12111 | static void | |
44702360 | 12112 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12113 | { |
348d480f | 12114 | |
492d29ea PA |
12115 | TRY |
12116 | { | |
12117 | update_global_location_list (insert_mode); | |
12118 | } | |
12119 | CATCH (e, RETURN_MASK_ERROR) | |
12120 | { | |
12121 | } | |
12122 | END_CATCH | |
348d480f PA |
12123 | } |
12124 | ||
12125 | /* Clear BKP from a BPS. */ | |
12126 | ||
12127 | static void | |
12128 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12129 | { | |
12130 | bpstat bs; | |
12131 | ||
12132 | for (bs = bps; bs; bs = bs->next) | |
12133 | if (bs->breakpoint_at == bpt) | |
12134 | { | |
12135 | bs->breakpoint_at = NULL; | |
12136 | bs->old_val = NULL; | |
12137 | /* bs->commands will be freed later. */ | |
12138 | } | |
12139 | } | |
12140 | ||
12141 | /* Callback for iterate_over_threads. */ | |
12142 | static int | |
12143 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12144 | { | |
9a3c8263 | 12145 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12146 | |
12147 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12148 | return 0; | |
12149 | } | |
12150 | ||
12151 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12152 | callbacks. */ | |
12153 | ||
12154 | static void | |
12155 | say_where (struct breakpoint *b) | |
12156 | { | |
12157 | struct value_print_options opts; | |
12158 | ||
12159 | get_user_print_options (&opts); | |
12160 | ||
12161 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12162 | single string. */ | |
12163 | if (b->loc == NULL) | |
12164 | { | |
f00aae0f KS |
12165 | /* For pending locations, the output differs slightly based |
12166 | on b->extra_string. If this is non-NULL, it contains either | |
12167 | a condition or dprintf arguments. */ | |
12168 | if (b->extra_string == NULL) | |
12169 | { | |
12170 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12171 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12172 | } |
12173 | else if (b->type == bp_dprintf) | |
12174 | { | |
12175 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12176 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12177 | b->extra_string); |
12178 | } | |
12179 | else | |
12180 | { | |
12181 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12182 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12183 | b->extra_string); |
12184 | } | |
348d480f PA |
12185 | } |
12186 | else | |
12187 | { | |
2f202fde | 12188 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12189 | { |
12190 | printf_filtered (" at "); | |
12191 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12192 | gdb_stdout); | |
12193 | } | |
2f202fde | 12194 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12195 | { |
12196 | /* If there is a single location, we can print the location | |
12197 | more nicely. */ | |
12198 | if (b->loc->next == NULL) | |
0bb296cb TT |
12199 | { |
12200 | puts_filtered (": file "); | |
12201 | fputs_styled (symtab_to_filename_for_display (b->loc->symtab), | |
12202 | file_name_style.style (), | |
12203 | gdb_stdout); | |
12204 | printf_filtered (", line %d.", | |
12205 | b->loc->line_number); | |
12206 | } | |
f8eba3c6 TT |
12207 | else |
12208 | /* This is not ideal, but each location may have a | |
12209 | different file name, and this at least reflects the | |
12210 | real situation somewhat. */ | |
f00aae0f | 12211 | printf_filtered (": %s.", |
d28cd78a | 12212 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12213 | } |
348d480f PA |
12214 | |
12215 | if (b->loc->next) | |
12216 | { | |
12217 | struct bp_location *loc = b->loc; | |
12218 | int n = 0; | |
12219 | for (; loc; loc = loc->next) | |
12220 | ++n; | |
12221 | printf_filtered (" (%d locations)", n); | |
12222 | } | |
12223 | } | |
12224 | } | |
12225 | ||
348d480f PA |
12226 | /* Default bp_location_ops methods. */ |
12227 | ||
12228 | static void | |
12229 | bp_location_dtor (struct bp_location *self) | |
12230 | { | |
348d480f PA |
12231 | xfree (self->function_name); |
12232 | } | |
12233 | ||
12234 | static const struct bp_location_ops bp_location_ops = | |
12235 | { | |
12236 | bp_location_dtor | |
12237 | }; | |
12238 | ||
c1fc2657 | 12239 | /* Destructor for the breakpoint base class. */ |
348d480f | 12240 | |
c1fc2657 | 12241 | breakpoint::~breakpoint () |
348d480f | 12242 | { |
c1fc2657 SM |
12243 | xfree (this->cond_string); |
12244 | xfree (this->extra_string); | |
12245 | xfree (this->filter); | |
348d480f PA |
12246 | } |
12247 | ||
2060206e PA |
12248 | static struct bp_location * |
12249 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12250 | { |
5625a286 | 12251 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12252 | } |
12253 | ||
2060206e PA |
12254 | static void |
12255 | base_breakpoint_re_set (struct breakpoint *b) | |
12256 | { | |
12257 | /* Nothing to re-set. */ | |
12258 | } | |
12259 | ||
12260 | #define internal_error_pure_virtual_called() \ | |
12261 | gdb_assert_not_reached ("pure virtual function called") | |
12262 | ||
12263 | static int | |
12264 | base_breakpoint_insert_location (struct bp_location *bl) | |
12265 | { | |
12266 | internal_error_pure_virtual_called (); | |
12267 | } | |
12268 | ||
12269 | static int | |
73971819 PA |
12270 | base_breakpoint_remove_location (struct bp_location *bl, |
12271 | enum remove_bp_reason reason) | |
2060206e PA |
12272 | { |
12273 | internal_error_pure_virtual_called (); | |
12274 | } | |
12275 | ||
12276 | static int | |
12277 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12278 | const address_space *aspace, |
09ac7c10 TT |
12279 | CORE_ADDR bp_addr, |
12280 | const struct target_waitstatus *ws) | |
2060206e PA |
12281 | { |
12282 | internal_error_pure_virtual_called (); | |
12283 | } | |
12284 | ||
12285 | static void | |
12286 | base_breakpoint_check_status (bpstat bs) | |
12287 | { | |
12288 | /* Always stop. */ | |
12289 | } | |
12290 | ||
12291 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12292 | errors. */ | |
12293 | ||
12294 | static int | |
12295 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12296 | { | |
12297 | internal_error_pure_virtual_called (); | |
12298 | } | |
12299 | ||
12300 | /* A "resources_needed" breakpoint_ops method that just internal | |
12301 | errors. */ | |
12302 | ||
12303 | static int | |
12304 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12305 | { | |
12306 | internal_error_pure_virtual_called (); | |
12307 | } | |
12308 | ||
12309 | static enum print_stop_action | |
12310 | base_breakpoint_print_it (bpstat bs) | |
12311 | { | |
12312 | internal_error_pure_virtual_called (); | |
12313 | } | |
12314 | ||
12315 | static void | |
12316 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12317 | struct ui_out *uiout) | |
12318 | { | |
12319 | /* nothing */ | |
12320 | } | |
12321 | ||
12322 | static void | |
12323 | base_breakpoint_print_mention (struct breakpoint *b) | |
12324 | { | |
12325 | internal_error_pure_virtual_called (); | |
12326 | } | |
12327 | ||
12328 | static void | |
12329 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12330 | { | |
12331 | internal_error_pure_virtual_called (); | |
12332 | } | |
12333 | ||
983af33b | 12334 | static void |
f00aae0f KS |
12335 | base_breakpoint_create_sals_from_location |
12336 | (const struct event_location *location, | |
12337 | struct linespec_result *canonical, | |
12338 | enum bptype type_wanted) | |
983af33b SDJ |
12339 | { |
12340 | internal_error_pure_virtual_called (); | |
12341 | } | |
12342 | ||
12343 | static void | |
12344 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12345 | struct linespec_result *c, | |
e1e01040 PA |
12346 | gdb::unique_xmalloc_ptr<char> cond_string, |
12347 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12348 | enum bptype type_wanted, |
12349 | enum bpdisp disposition, | |
12350 | int thread, | |
12351 | int task, int ignore_count, | |
12352 | const struct breakpoint_ops *o, | |
12353 | int from_tty, int enabled, | |
44f238bb | 12354 | int internal, unsigned flags) |
983af33b SDJ |
12355 | { |
12356 | internal_error_pure_virtual_called (); | |
12357 | } | |
12358 | ||
6c5b2ebe | 12359 | static std::vector<symtab_and_line> |
f00aae0f KS |
12360 | base_breakpoint_decode_location (struct breakpoint *b, |
12361 | const struct event_location *location, | |
6c5b2ebe | 12362 | struct program_space *search_pspace) |
983af33b SDJ |
12363 | { |
12364 | internal_error_pure_virtual_called (); | |
12365 | } | |
12366 | ||
ab04a2af TT |
12367 | /* The default 'explains_signal' method. */ |
12368 | ||
47591c29 | 12369 | static int |
427cd150 | 12370 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12371 | { |
47591c29 | 12372 | return 1; |
ab04a2af TT |
12373 | } |
12374 | ||
9d6e6e84 HZ |
12375 | /* The default "after_condition_true" method. */ |
12376 | ||
12377 | static void | |
12378 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12379 | { | |
12380 | /* Nothing to do. */ | |
12381 | } | |
12382 | ||
ab04a2af | 12383 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12384 | { |
2060206e PA |
12385 | base_breakpoint_allocate_location, |
12386 | base_breakpoint_re_set, | |
12387 | base_breakpoint_insert_location, | |
12388 | base_breakpoint_remove_location, | |
12389 | base_breakpoint_breakpoint_hit, | |
12390 | base_breakpoint_check_status, | |
12391 | base_breakpoint_resources_needed, | |
12392 | base_breakpoint_works_in_software_mode, | |
12393 | base_breakpoint_print_it, | |
12394 | NULL, | |
12395 | base_breakpoint_print_one_detail, | |
12396 | base_breakpoint_print_mention, | |
983af33b | 12397 | base_breakpoint_print_recreate, |
5f700d83 | 12398 | base_breakpoint_create_sals_from_location, |
983af33b | 12399 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12400 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12401 | base_breakpoint_explains_signal, |
12402 | base_breakpoint_after_condition_true, | |
2060206e PA |
12403 | }; |
12404 | ||
12405 | /* Default breakpoint_ops methods. */ | |
12406 | ||
12407 | static void | |
348d480f PA |
12408 | bkpt_re_set (struct breakpoint *b) |
12409 | { | |
06edf0c0 | 12410 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12411 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12412 | { |
f00aae0f | 12413 | /* Anything without a location can't be re-set. */ |
348d480f | 12414 | delete_breakpoint (b); |
06edf0c0 | 12415 | return; |
348d480f | 12416 | } |
06edf0c0 PA |
12417 | |
12418 | breakpoint_re_set_default (b); | |
348d480f PA |
12419 | } |
12420 | ||
2060206e | 12421 | static int |
348d480f PA |
12422 | bkpt_insert_location (struct bp_location *bl) |
12423 | { | |
cd6c3b4f YQ |
12424 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12425 | ||
579c6ad9 | 12426 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12427 | bl->target_info.placed_address = addr; |
12428 | ||
348d480f | 12429 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12430 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12431 | else |
7c16b83e | 12432 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12433 | } |
12434 | ||
2060206e | 12435 | static int |
73971819 | 12436 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12437 | { |
12438 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12439 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12440 | else | |
73971819 | 12441 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12442 | } |
12443 | ||
2060206e | 12444 | static int |
348d480f | 12445 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12446 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12447 | const struct target_waitstatus *ws) |
348d480f | 12448 | { |
09ac7c10 | 12449 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12450 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12451 | return 0; |
12452 | ||
348d480f PA |
12453 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12454 | aspace, bp_addr)) | |
12455 | return 0; | |
12456 | ||
12457 | if (overlay_debugging /* unmapped overlay section */ | |
12458 | && section_is_overlay (bl->section) | |
12459 | && !section_is_mapped (bl->section)) | |
12460 | return 0; | |
12461 | ||
12462 | return 1; | |
12463 | } | |
12464 | ||
cd1608cc PA |
12465 | static int |
12466 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12467 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12468 | const struct target_waitstatus *ws) |
12469 | { | |
12470 | if (dprintf_style == dprintf_style_agent | |
12471 | && target_can_run_breakpoint_commands ()) | |
12472 | { | |
12473 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12474 | for this address it must be for a breakpoint that happens to | |
12475 | be set at the same address. */ | |
12476 | return 0; | |
12477 | } | |
12478 | ||
12479 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12480 | } | |
12481 | ||
2060206e | 12482 | static int |
348d480f PA |
12483 | bkpt_resources_needed (const struct bp_location *bl) |
12484 | { | |
12485 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12486 | ||
12487 | return 1; | |
12488 | } | |
12489 | ||
2060206e | 12490 | static enum print_stop_action |
348d480f PA |
12491 | bkpt_print_it (bpstat bs) |
12492 | { | |
348d480f PA |
12493 | struct breakpoint *b; |
12494 | const struct bp_location *bl; | |
001c8c33 | 12495 | int bp_temp; |
79a45e25 | 12496 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12497 | |
12498 | gdb_assert (bs->bp_location_at != NULL); | |
12499 | ||
12500 | bl = bs->bp_location_at; | |
12501 | b = bs->breakpoint_at; | |
12502 | ||
001c8c33 PA |
12503 | bp_temp = b->disposition == disp_del; |
12504 | if (bl->address != bl->requested_address) | |
12505 | breakpoint_adjustment_warning (bl->requested_address, | |
12506 | bl->address, | |
12507 | b->number, 1); | |
12508 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12509 | maybe_print_thread_hit_breakpoint (uiout); |
12510 | ||
001c8c33 | 12511 | if (bp_temp) |
112e8700 | 12512 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12513 | else |
112e8700 SM |
12514 | uiout->text ("Breakpoint "); |
12515 | if (uiout->is_mi_like_p ()) | |
348d480f | 12516 | { |
112e8700 | 12517 | uiout->field_string ("reason", |
001c8c33 | 12518 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12519 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12520 | } |
112e8700 SM |
12521 | uiout->field_int ("bkptno", b->number); |
12522 | uiout->text (", "); | |
06edf0c0 | 12523 | |
001c8c33 | 12524 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12525 | } |
12526 | ||
2060206e | 12527 | static void |
06edf0c0 PA |
12528 | bkpt_print_mention (struct breakpoint *b) |
12529 | { | |
112e8700 | 12530 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12531 | return; |
12532 | ||
12533 | switch (b->type) | |
12534 | { | |
12535 | case bp_breakpoint: | |
12536 | case bp_gnu_ifunc_resolver: | |
12537 | if (b->disposition == disp_del) | |
12538 | printf_filtered (_("Temporary breakpoint")); | |
12539 | else | |
12540 | printf_filtered (_("Breakpoint")); | |
12541 | printf_filtered (_(" %d"), b->number); | |
12542 | if (b->type == bp_gnu_ifunc_resolver) | |
12543 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12544 | break; | |
12545 | case bp_hardware_breakpoint: | |
12546 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12547 | break; | |
e7e0cddf SS |
12548 | case bp_dprintf: |
12549 | printf_filtered (_("Dprintf %d"), b->number); | |
12550 | break; | |
06edf0c0 PA |
12551 | } |
12552 | ||
12553 | say_where (b); | |
12554 | } | |
12555 | ||
2060206e | 12556 | static void |
06edf0c0 PA |
12557 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12558 | { | |
12559 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12560 | fprintf_unfiltered (fp, "tbreak"); | |
12561 | else if (tp->type == bp_breakpoint) | |
12562 | fprintf_unfiltered (fp, "break"); | |
12563 | else if (tp->type == bp_hardware_breakpoint | |
12564 | && tp->disposition == disp_del) | |
12565 | fprintf_unfiltered (fp, "thbreak"); | |
12566 | else if (tp->type == bp_hardware_breakpoint) | |
12567 | fprintf_unfiltered (fp, "hbreak"); | |
12568 | else | |
12569 | internal_error (__FILE__, __LINE__, | |
12570 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12571 | ||
f00aae0f | 12572 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12573 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12574 | |
12575 | /* Print out extra_string if this breakpoint is pending. It might | |
12576 | contain, for example, conditions that were set by the user. */ | |
12577 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12578 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12579 | ||
dd11a36c | 12580 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12581 | } |
12582 | ||
983af33b | 12583 | static void |
f00aae0f KS |
12584 | bkpt_create_sals_from_location (const struct event_location *location, |
12585 | struct linespec_result *canonical, | |
12586 | enum bptype type_wanted) | |
983af33b | 12587 | { |
f00aae0f | 12588 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12589 | } |
12590 | ||
12591 | static void | |
12592 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12593 | struct linespec_result *canonical, | |
e1e01040 PA |
12594 | gdb::unique_xmalloc_ptr<char> cond_string, |
12595 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12596 | enum bptype type_wanted, |
12597 | enum bpdisp disposition, | |
12598 | int thread, | |
12599 | int task, int ignore_count, | |
12600 | const struct breakpoint_ops *ops, | |
12601 | int from_tty, int enabled, | |
44f238bb | 12602 | int internal, unsigned flags) |
983af33b | 12603 | { |
023fa29b | 12604 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12605 | std::move (cond_string), |
12606 | std::move (extra_string), | |
e7e0cddf | 12607 | type_wanted, |
983af33b SDJ |
12608 | disposition, thread, task, |
12609 | ignore_count, ops, from_tty, | |
44f238bb | 12610 | enabled, internal, flags); |
983af33b SDJ |
12611 | } |
12612 | ||
6c5b2ebe | 12613 | static std::vector<symtab_and_line> |
f00aae0f KS |
12614 | bkpt_decode_location (struct breakpoint *b, |
12615 | const struct event_location *location, | |
6c5b2ebe | 12616 | struct program_space *search_pspace) |
983af33b | 12617 | { |
6c5b2ebe | 12618 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12619 | } |
12620 | ||
06edf0c0 PA |
12621 | /* Virtual table for internal breakpoints. */ |
12622 | ||
12623 | static void | |
12624 | internal_bkpt_re_set (struct breakpoint *b) | |
12625 | { | |
12626 | switch (b->type) | |
12627 | { | |
12628 | /* Delete overlay event and longjmp master breakpoints; they | |
12629 | will be reset later by breakpoint_re_set. */ | |
12630 | case bp_overlay_event: | |
12631 | case bp_longjmp_master: | |
12632 | case bp_std_terminate_master: | |
12633 | case bp_exception_master: | |
12634 | delete_breakpoint (b); | |
12635 | break; | |
12636 | ||
12637 | /* This breakpoint is special, it's set up when the inferior | |
12638 | starts and we really don't want to touch it. */ | |
12639 | case bp_shlib_event: | |
12640 | ||
12641 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12642 | it is set up, we do not want to touch it. */ | |
12643 | case bp_thread_event: | |
12644 | break; | |
12645 | } | |
12646 | } | |
12647 | ||
12648 | static void | |
12649 | internal_bkpt_check_status (bpstat bs) | |
12650 | { | |
a9b3a50f PA |
12651 | if (bs->breakpoint_at->type == bp_shlib_event) |
12652 | { | |
12653 | /* If requested, stop when the dynamic linker notifies GDB of | |
12654 | events. This allows the user to get control and place | |
12655 | breakpoints in initializer routines for dynamically loaded | |
12656 | objects (among other things). */ | |
12657 | bs->stop = stop_on_solib_events; | |
12658 | bs->print = stop_on_solib_events; | |
12659 | } | |
12660 | else | |
12661 | bs->stop = 0; | |
06edf0c0 PA |
12662 | } |
12663 | ||
12664 | static enum print_stop_action | |
12665 | internal_bkpt_print_it (bpstat bs) | |
12666 | { | |
06edf0c0 | 12667 | struct breakpoint *b; |
06edf0c0 | 12668 | |
06edf0c0 PA |
12669 | b = bs->breakpoint_at; |
12670 | ||
06edf0c0 PA |
12671 | switch (b->type) |
12672 | { | |
348d480f PA |
12673 | case bp_shlib_event: |
12674 | /* Did we stop because the user set the stop_on_solib_events | |
12675 | variable? (If so, we report this as a generic, "Stopped due | |
12676 | to shlib event" message.) */ | |
edcc5120 | 12677 | print_solib_event (0); |
348d480f PA |
12678 | break; |
12679 | ||
12680 | case bp_thread_event: | |
12681 | /* Not sure how we will get here. | |
12682 | GDB should not stop for these breakpoints. */ | |
12683 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12684 | break; |
12685 | ||
12686 | case bp_overlay_event: | |
12687 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12688 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12689 | break; |
12690 | ||
12691 | case bp_longjmp_master: | |
12692 | /* These should never be enabled. */ | |
12693 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12694 | break; |
12695 | ||
12696 | case bp_std_terminate_master: | |
12697 | /* These should never be enabled. */ | |
12698 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12699 | "gdb should not stop!\n")); | |
348d480f PA |
12700 | break; |
12701 | ||
12702 | case bp_exception_master: | |
12703 | /* These should never be enabled. */ | |
12704 | printf_filtered (_("Exception Master Breakpoint: " | |
12705 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12706 | break; |
12707 | } | |
12708 | ||
001c8c33 | 12709 | return PRINT_NOTHING; |
06edf0c0 PA |
12710 | } |
12711 | ||
12712 | static void | |
12713 | internal_bkpt_print_mention (struct breakpoint *b) | |
12714 | { | |
12715 | /* Nothing to mention. These breakpoints are internal. */ | |
12716 | } | |
12717 | ||
06edf0c0 PA |
12718 | /* Virtual table for momentary breakpoints */ |
12719 | ||
12720 | static void | |
12721 | momentary_bkpt_re_set (struct breakpoint *b) | |
12722 | { | |
12723 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12724 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12725 | Otherwise these should have been blown away via the cleanup chain |
12726 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12727 | } | |
12728 | ||
12729 | static void | |
12730 | momentary_bkpt_check_status (bpstat bs) | |
12731 | { | |
12732 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12733 | } | |
12734 | ||
12735 | static enum print_stop_action | |
12736 | momentary_bkpt_print_it (bpstat bs) | |
12737 | { | |
001c8c33 | 12738 | return PRINT_UNKNOWN; |
348d480f PA |
12739 | } |
12740 | ||
06edf0c0 PA |
12741 | static void |
12742 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12743 | { |
06edf0c0 | 12744 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12745 | } |
12746 | ||
e2e4d78b JK |
12747 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12748 | ||
12749 | It gets cleared already on the removal of the first one of such placed | |
12750 | breakpoints. This is OK as they get all removed altogether. */ | |
12751 | ||
c1fc2657 | 12752 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12753 | { |
c1fc2657 | 12754 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12755 | |
c1fc2657 | 12756 | if (tp != NULL) |
e2e4d78b | 12757 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12758 | } |
12759 | ||
55aa24fb SDJ |
12760 | /* Specific methods for probe breakpoints. */ |
12761 | ||
12762 | static int | |
12763 | bkpt_probe_insert_location (struct bp_location *bl) | |
12764 | { | |
12765 | int v = bkpt_insert_location (bl); | |
12766 | ||
12767 | if (v == 0) | |
12768 | { | |
12769 | /* The insertion was successful, now let's set the probe's semaphore | |
12770 | if needed. */ | |
935676c9 | 12771 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12772 | } |
12773 | ||
12774 | return v; | |
12775 | } | |
12776 | ||
12777 | static int | |
73971819 PA |
12778 | bkpt_probe_remove_location (struct bp_location *bl, |
12779 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12780 | { |
12781 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12782 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12783 | |
73971819 | 12784 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12785 | } |
12786 | ||
12787 | static void | |
f00aae0f | 12788 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12789 | struct linespec_result *canonical, |
f00aae0f | 12790 | enum bptype type_wanted) |
55aa24fb SDJ |
12791 | { |
12792 | struct linespec_sals lsal; | |
12793 | ||
c2f4122d | 12794 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12795 | lsal.canonical |
12796 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12797 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12798 | } |
12799 | ||
6c5b2ebe | 12800 | static std::vector<symtab_and_line> |
f00aae0f KS |
12801 | bkpt_probe_decode_location (struct breakpoint *b, |
12802 | const struct event_location *location, | |
6c5b2ebe | 12803 | struct program_space *search_pspace) |
55aa24fb | 12804 | { |
6c5b2ebe PA |
12805 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12806 | if (sals.empty ()) | |
55aa24fb | 12807 | error (_("probe not found")); |
6c5b2ebe | 12808 | return sals; |
55aa24fb SDJ |
12809 | } |
12810 | ||
348d480f | 12811 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12812 | |
348d480f PA |
12813 | static void |
12814 | tracepoint_re_set (struct breakpoint *b) | |
12815 | { | |
12816 | breakpoint_re_set_default (b); | |
12817 | } | |
876fa593 | 12818 | |
348d480f PA |
12819 | static int |
12820 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12821 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12822 | const struct target_waitstatus *ws) |
348d480f PA |
12823 | { |
12824 | /* By definition, the inferior does not report stops at | |
12825 | tracepoints. */ | |
12826 | return 0; | |
74960c60 VP |
12827 | } |
12828 | ||
12829 | static void | |
348d480f PA |
12830 | tracepoint_print_one_detail (const struct breakpoint *self, |
12831 | struct ui_out *uiout) | |
74960c60 | 12832 | { |
d9b3f62e | 12833 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12834 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12835 | { |
12836 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12837 | |
112e8700 SM |
12838 | uiout->text ("\tmarker id is "); |
12839 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12840 | tp->static_trace_marker_id); |
112e8700 | 12841 | uiout->text ("\n"); |
348d480f | 12842 | } |
0d381245 VP |
12843 | } |
12844 | ||
a474d7c2 | 12845 | static void |
348d480f | 12846 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12847 | { |
112e8700 | 12848 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12849 | return; |
cc59ec59 | 12850 | |
348d480f PA |
12851 | switch (b->type) |
12852 | { | |
12853 | case bp_tracepoint: | |
12854 | printf_filtered (_("Tracepoint")); | |
12855 | printf_filtered (_(" %d"), b->number); | |
12856 | break; | |
12857 | case bp_fast_tracepoint: | |
12858 | printf_filtered (_("Fast tracepoint")); | |
12859 | printf_filtered (_(" %d"), b->number); | |
12860 | break; | |
12861 | case bp_static_tracepoint: | |
12862 | printf_filtered (_("Static tracepoint")); | |
12863 | printf_filtered (_(" %d"), b->number); | |
12864 | break; | |
12865 | default: | |
12866 | internal_error (__FILE__, __LINE__, | |
12867 | _("unhandled tracepoint type %d"), (int) b->type); | |
12868 | } | |
12869 | ||
12870 | say_where (b); | |
a474d7c2 PA |
12871 | } |
12872 | ||
348d480f | 12873 | static void |
d9b3f62e | 12874 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12875 | { |
d9b3f62e PA |
12876 | struct tracepoint *tp = (struct tracepoint *) self; |
12877 | ||
12878 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12879 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12880 | else if (self->type == bp_static_tracepoint) |
348d480f | 12881 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12882 | else if (self->type == bp_tracepoint) |
348d480f PA |
12883 | fprintf_unfiltered (fp, "trace"); |
12884 | else | |
12885 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12886 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12887 | |
f00aae0f | 12888 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12889 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12890 | print_recreate_thread (self, fp); |
12891 | ||
12892 | if (tp->pass_count) | |
12893 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12894 | } |
12895 | ||
983af33b | 12896 | static void |
f00aae0f KS |
12897 | tracepoint_create_sals_from_location (const struct event_location *location, |
12898 | struct linespec_result *canonical, | |
12899 | enum bptype type_wanted) | |
983af33b | 12900 | { |
f00aae0f | 12901 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12902 | } |
12903 | ||
12904 | static void | |
12905 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12906 | struct linespec_result *canonical, | |
e1e01040 PA |
12907 | gdb::unique_xmalloc_ptr<char> cond_string, |
12908 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12909 | enum bptype type_wanted, |
12910 | enum bpdisp disposition, | |
12911 | int thread, | |
12912 | int task, int ignore_count, | |
12913 | const struct breakpoint_ops *ops, | |
12914 | int from_tty, int enabled, | |
44f238bb | 12915 | int internal, unsigned flags) |
983af33b | 12916 | { |
023fa29b | 12917 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12918 | std::move (cond_string), |
12919 | std::move (extra_string), | |
e7e0cddf | 12920 | type_wanted, |
983af33b SDJ |
12921 | disposition, thread, task, |
12922 | ignore_count, ops, from_tty, | |
44f238bb | 12923 | enabled, internal, flags); |
983af33b SDJ |
12924 | } |
12925 | ||
6c5b2ebe | 12926 | static std::vector<symtab_and_line> |
f00aae0f KS |
12927 | tracepoint_decode_location (struct breakpoint *b, |
12928 | const struct event_location *location, | |
6c5b2ebe | 12929 | struct program_space *search_pspace) |
983af33b | 12930 | { |
6c5b2ebe | 12931 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12932 | } |
12933 | ||
2060206e | 12934 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12935 | |
55aa24fb SDJ |
12936 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12937 | static probe. */ | |
12938 | ||
12939 | static void | |
f00aae0f KS |
12940 | tracepoint_probe_create_sals_from_location |
12941 | (const struct event_location *location, | |
12942 | struct linespec_result *canonical, | |
12943 | enum bptype type_wanted) | |
55aa24fb SDJ |
12944 | { |
12945 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12946 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12947 | } |
12948 | ||
6c5b2ebe | 12949 | static std::vector<symtab_and_line> |
f00aae0f KS |
12950 | tracepoint_probe_decode_location (struct breakpoint *b, |
12951 | const struct event_location *location, | |
6c5b2ebe | 12952 | struct program_space *search_pspace) |
55aa24fb SDJ |
12953 | { |
12954 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12955 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12956 | } |
12957 | ||
12958 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12959 | ||
5c2b4418 HZ |
12960 | /* Dprintf breakpoint_ops methods. */ |
12961 | ||
12962 | static void | |
12963 | dprintf_re_set (struct breakpoint *b) | |
12964 | { | |
12965 | breakpoint_re_set_default (b); | |
12966 | ||
f00aae0f KS |
12967 | /* extra_string should never be non-NULL for dprintf. */ |
12968 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12969 | |
12970 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12971 | 2 - create a dprintf, which resolves fine. | |
12972 | 3 - disconnect from target 1 | |
12973 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12974 | ||
12975 | After steps #3/#4, you'll want the dprintf command list to | |
12976 | be updated, because target 1 and 2 may well return different | |
12977 | answers for target_can_run_breakpoint_commands(). | |
12978 | Given absence of finer grained resetting, we get to do | |
12979 | it all the time. */ | |
12980 | if (b->extra_string != NULL) | |
12981 | update_dprintf_command_list (b); | |
12982 | } | |
12983 | ||
2d9442cc HZ |
12984 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12985 | ||
12986 | static void | |
12987 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12988 | { | |
f00aae0f | 12989 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12990 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12991 | tp->extra_string); |
12992 | print_recreate_thread (tp, fp); | |
12993 | } | |
12994 | ||
9d6e6e84 HZ |
12995 | /* Implement the "after_condition_true" breakpoint_ops method for |
12996 | dprintf. | |
12997 | ||
12998 | dprintf's are implemented with regular commands in their command | |
12999 | list, but we run the commands here instead of before presenting the | |
13000 | stop to the user, as dprintf's don't actually cause a stop. This | |
13001 | also makes it so that the commands of multiple dprintfs at the same | |
13002 | address are all handled. */ | |
13003 | ||
13004 | static void | |
13005 | dprintf_after_condition_true (struct bpstats *bs) | |
13006 | { | |
04afa70c | 13007 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13008 | struct bpstats *tmp_bs_p = &tmp_bs; |
13009 | ||
13010 | /* dprintf's never cause a stop. This wasn't set in the | |
13011 | check_status hook instead because that would make the dprintf's | |
13012 | condition not be evaluated. */ | |
13013 | bs->stop = 0; | |
13014 | ||
13015 | /* Run the command list here. Take ownership of it instead of | |
13016 | copying. We never want these commands to run later in | |
13017 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13018 | be set at same address as this dprintf, or even if running the | |
13019 | commands here throws. */ | |
13020 | tmp_bs.commands = bs->commands; | |
13021 | bs->commands = NULL; | |
9d6e6e84 HZ |
13022 | |
13023 | bpstat_do_actions_1 (&tmp_bs_p); | |
13024 | ||
13025 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13026 | bpstat_do_actions_1 may return early without processing the whole | |
13027 | list. */ | |
9d6e6e84 HZ |
13028 | } |
13029 | ||
983af33b SDJ |
13030 | /* The breakpoint_ops structure to be used on static tracepoints with |
13031 | markers (`-m'). */ | |
13032 | ||
13033 | static void | |
f00aae0f | 13034 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13035 | struct linespec_result *canonical, |
f00aae0f | 13036 | enum bptype type_wanted) |
983af33b SDJ |
13037 | { |
13038 | struct linespec_sals lsal; | |
f00aae0f | 13039 | const char *arg_start, *arg; |
983af33b | 13040 | |
a20714ff | 13041 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13042 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13043 | |
f2fc3015 TT |
13044 | std::string str (arg_start, arg - arg_start); |
13045 | const char *ptr = str.c_str (); | |
a20714ff PA |
13046 | canonical->location |
13047 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13048 | |
8e9e35b1 TT |
13049 | lsal.canonical |
13050 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13051 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13052 | } |
13053 | ||
13054 | static void | |
13055 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13056 | struct linespec_result *canonical, | |
e1e01040 PA |
13057 | gdb::unique_xmalloc_ptr<char> cond_string, |
13058 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13059 | enum bptype type_wanted, |
13060 | enum bpdisp disposition, | |
13061 | int thread, | |
13062 | int task, int ignore_count, | |
13063 | const struct breakpoint_ops *ops, | |
13064 | int from_tty, int enabled, | |
44f238bb | 13065 | int internal, unsigned flags) |
983af33b | 13066 | { |
6c5b2ebe | 13067 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13068 | |
13069 | /* If the user is creating a static tracepoint by marker id | |
13070 | (strace -m MARKER_ID), then store the sals index, so that | |
13071 | breakpoint_re_set can try to match up which of the newly | |
13072 | found markers corresponds to this one, and, don't try to | |
13073 | expand multiple locations for each sal, given than SALS | |
13074 | already should contain all sals for MARKER_ID. */ | |
13075 | ||
6c5b2ebe | 13076 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13077 | { |
6c5b2ebe PA |
13078 | event_location_up location |
13079 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13080 | |
b270e6f9 | 13081 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13082 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13083 | std::move (location), NULL, |
e1e01040 PA |
13084 | std::move (cond_string), |
13085 | std::move (extra_string), | |
e7e0cddf | 13086 | type_wanted, disposition, |
983af33b | 13087 | thread, task, ignore_count, ops, |
44f238bb | 13088 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13089 | canonical->special_display); |
13090 | /* Given that its possible to have multiple markers with | |
13091 | the same string id, if the user is creating a static | |
13092 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13093 | store the sals index, so that breakpoint_re_set can | |
13094 | try to match up which of the newly found markers | |
13095 | corresponds to this one */ | |
13096 | tp->static_trace_marker_id_idx = i; | |
13097 | ||
b270e6f9 | 13098 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13099 | } |
13100 | } | |
13101 | ||
6c5b2ebe | 13102 | static std::vector<symtab_and_line> |
f00aae0f KS |
13103 | strace_marker_decode_location (struct breakpoint *b, |
13104 | const struct event_location *location, | |
6c5b2ebe | 13105 | struct program_space *search_pspace) |
983af33b SDJ |
13106 | { |
13107 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13108 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13109 | |
6c5b2ebe PA |
13110 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13111 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13112 | { |
6c5b2ebe PA |
13113 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13114 | sals.resize (1); | |
13115 | return sals; | |
983af33b SDJ |
13116 | } |
13117 | else | |
5d9310c4 | 13118 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13119 | } |
13120 | ||
13121 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13122 | ||
13123 | static int | |
13124 | strace_marker_p (struct breakpoint *b) | |
13125 | { | |
13126 | return b->ops == &strace_marker_breakpoint_ops; | |
13127 | } | |
13128 | ||
53a5351d | 13129 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13130 | structures. */ |
c906108c SS |
13131 | |
13132 | void | |
fba45db2 | 13133 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13134 | { |
52f0bd74 | 13135 | struct breakpoint *b; |
c906108c | 13136 | |
8a3fe4f8 | 13137 | gdb_assert (bpt != NULL); |
c906108c | 13138 | |
4a64f543 MS |
13139 | /* Has this bp already been deleted? This can happen because |
13140 | multiple lists can hold pointers to bp's. bpstat lists are | |
13141 | especial culprits. | |
13142 | ||
13143 | One example of this happening is a watchpoint's scope bp. When | |
13144 | the scope bp triggers, we notice that the watchpoint is out of | |
13145 | scope, and delete it. We also delete its scope bp. But the | |
13146 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13147 | That bpstat is then checked for auto-deleting bp's, which are | |
13148 | deleted. | |
13149 | ||
13150 | A real solution to this problem might involve reference counts in | |
13151 | bp's, and/or giving them pointers back to their referencing | |
13152 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13153 | storage when no more references were extent. A cheaper bandaid | |
13154 | was chosen. */ | |
c906108c SS |
13155 | if (bpt->type == bp_none) |
13156 | return; | |
13157 | ||
4a64f543 MS |
13158 | /* At least avoid this stale reference until the reference counting |
13159 | of breakpoints gets resolved. */ | |
d0fb5eae | 13160 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13161 | { |
d0fb5eae | 13162 | struct breakpoint *related; |
3a5c3e22 | 13163 | struct watchpoint *w; |
d0fb5eae JK |
13164 | |
13165 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13166 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13167 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13168 | w = (struct watchpoint *) bpt; |
13169 | else | |
13170 | w = NULL; | |
13171 | if (w != NULL) | |
13172 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13173 | |
13174 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13175 | for (related = bpt; related->related_breakpoint != bpt; | |
13176 | related = related->related_breakpoint); | |
13177 | related->related_breakpoint = bpt->related_breakpoint; | |
13178 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13179 | } |
13180 | ||
a9634178 TJB |
13181 | /* watch_command_1 creates a watchpoint but only sets its number if |
13182 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13183 | a problem in that process, we'll be asked to delete the half-created | |
13184 | watchpoint. In that case, don't announce the deletion. */ | |
13185 | if (bpt->number) | |
76727919 | 13186 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13187 | |
c906108c SS |
13188 | if (breakpoint_chain == bpt) |
13189 | breakpoint_chain = bpt->next; | |
13190 | ||
c906108c SS |
13191 | ALL_BREAKPOINTS (b) |
13192 | if (b->next == bpt) | |
c5aa993b JM |
13193 | { |
13194 | b->next = bpt->next; | |
13195 | break; | |
13196 | } | |
c906108c | 13197 | |
f431efe5 PA |
13198 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13199 | been freed. */ | |
13200 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13201 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13202 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13203 | commands are associated with the bpstat; if we remove it here, | |
13204 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13205 | event-top.c won't do anything, and temporary breakpoints with | |
13206 | commands won't work. */ | |
13207 | ||
13208 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13209 | ||
4a64f543 MS |
13210 | /* Now that breakpoint is removed from breakpoint list, update the |
13211 | global location list. This will remove locations that used to | |
13212 | belong to this breakpoint. Do this before freeing the breakpoint | |
13213 | itself, since remove_breakpoint looks at location's owner. It | |
13214 | might be better design to have location completely | |
13215 | self-contained, but it's not the case now. */ | |
44702360 | 13216 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13217 | |
4a64f543 MS |
13218 | /* On the chance that someone will soon try again to delete this |
13219 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13220 | bpt->type = bp_none; |
4d01a485 | 13221 | delete bpt; |
c906108c SS |
13222 | } |
13223 | ||
51be5b68 PA |
13224 | /* Iterator function to call a user-provided callback function once |
13225 | for each of B and its related breakpoints. */ | |
13226 | ||
13227 | static void | |
13228 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13229 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13230 | { |
13231 | struct breakpoint *related; | |
13232 | ||
13233 | related = b; | |
13234 | do | |
13235 | { | |
13236 | struct breakpoint *next; | |
13237 | ||
13238 | /* FUNCTION may delete RELATED. */ | |
13239 | next = related->related_breakpoint; | |
13240 | ||
13241 | if (next == related) | |
13242 | { | |
13243 | /* RELATED is the last ring entry. */ | |
48649e1b | 13244 | function (related); |
51be5b68 PA |
13245 | |
13246 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13247 | B. There's nothing left to do anyway, so just break | |
13248 | out. */ | |
13249 | break; | |
13250 | } | |
13251 | else | |
48649e1b | 13252 | function (related); |
51be5b68 PA |
13253 | |
13254 | related = next; | |
13255 | } | |
13256 | while (related != b); | |
13257 | } | |
95a42b64 | 13258 | |
4495129a | 13259 | static void |
981a3fb3 | 13260 | delete_command (const char *arg, int from_tty) |
c906108c | 13261 | { |
35df4500 | 13262 | struct breakpoint *b, *b_tmp; |
c906108c | 13263 | |
ea9365bb TT |
13264 | dont_repeat (); |
13265 | ||
c906108c SS |
13266 | if (arg == 0) |
13267 | { | |
13268 | int breaks_to_delete = 0; | |
13269 | ||
46c6471b PA |
13270 | /* Delete all breakpoints if no argument. Do not delete |
13271 | internal breakpoints, these have to be deleted with an | |
13272 | explicit breakpoint number argument. */ | |
c5aa993b | 13273 | ALL_BREAKPOINTS (b) |
46c6471b | 13274 | if (user_breakpoint_p (b)) |
973d738b DJ |
13275 | { |
13276 | breaks_to_delete = 1; | |
13277 | break; | |
13278 | } | |
c906108c SS |
13279 | |
13280 | /* Ask user only if there are some breakpoints to delete. */ | |
13281 | if (!from_tty | |
e2e0b3e5 | 13282 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13283 | { |
35df4500 | 13284 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13285 | if (user_breakpoint_p (b)) |
c5aa993b | 13286 | delete_breakpoint (b); |
c906108c SS |
13287 | } |
13288 | } | |
13289 | else | |
48649e1b | 13290 | map_breakpoint_numbers |
b926417a | 13291 | (arg, [&] (breakpoint *br) |
48649e1b | 13292 | { |
b926417a | 13293 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13294 | }); |
c906108c SS |
13295 | } |
13296 | ||
c2f4122d PA |
13297 | /* Return true if all locations of B bound to PSPACE are pending. If |
13298 | PSPACE is NULL, all locations of all program spaces are | |
13299 | considered. */ | |
13300 | ||
0d381245 | 13301 | static int |
c2f4122d | 13302 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13303 | { |
c2f4122d PA |
13304 | struct bp_location *loc; |
13305 | ||
13306 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13307 | if ((pspace == NULL | |
13308 | || loc->pspace == pspace) | |
13309 | && !loc->shlib_disabled | |
8645ff69 | 13310 | && !loc->pspace->executing_startup) |
0d381245 VP |
13311 | return 0; |
13312 | return 1; | |
fe3f5fa8 VP |
13313 | } |
13314 | ||
776592bf DE |
13315 | /* Subroutine of update_breakpoint_locations to simplify it. |
13316 | Return non-zero if multiple fns in list LOC have the same name. | |
13317 | Null names are ignored. */ | |
13318 | ||
13319 | static int | |
13320 | ambiguous_names_p (struct bp_location *loc) | |
13321 | { | |
13322 | struct bp_location *l; | |
459a2e4c TT |
13323 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13324 | xcalloc, xfree); | |
776592bf DE |
13325 | |
13326 | for (l = loc; l != NULL; l = l->next) | |
13327 | { | |
13328 | const char **slot; | |
13329 | const char *name = l->function_name; | |
13330 | ||
13331 | /* Allow for some names to be NULL, ignore them. */ | |
13332 | if (name == NULL) | |
13333 | continue; | |
13334 | ||
13335 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13336 | INSERT); | |
4a64f543 MS |
13337 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13338 | returns NULL. */ | |
776592bf DE |
13339 | if (*slot != NULL) |
13340 | { | |
13341 | htab_delete (htab); | |
13342 | return 1; | |
13343 | } | |
13344 | *slot = name; | |
13345 | } | |
13346 | ||
13347 | htab_delete (htab); | |
13348 | return 0; | |
13349 | } | |
13350 | ||
0fb4aa4b PA |
13351 | /* When symbols change, it probably means the sources changed as well, |
13352 | and it might mean the static tracepoint markers are no longer at | |
13353 | the same address or line numbers they used to be at last we | |
13354 | checked. Losing your static tracepoints whenever you rebuild is | |
13355 | undesirable. This function tries to resync/rematch gdb static | |
13356 | tracepoints with the markers on the target, for static tracepoints | |
13357 | that have not been set by marker id. Static tracepoint that have | |
13358 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13359 | The heuristic is: | |
13360 | ||
13361 | 1) For a tracepoint set at a specific address, look for a marker at | |
13362 | the old PC. If one is found there, assume to be the same marker. | |
13363 | If the name / string id of the marker found is different from the | |
13364 | previous known name, assume that means the user renamed the marker | |
13365 | in the sources, and output a warning. | |
13366 | ||
13367 | 2) For a tracepoint set at a given line number, look for a marker | |
13368 | at the new address of the old line number. If one is found there, | |
13369 | assume to be the same marker. If the name / string id of the | |
13370 | marker found is different from the previous known name, assume that | |
13371 | means the user renamed the marker in the sources, and output a | |
13372 | warning. | |
13373 | ||
13374 | 3) If a marker is no longer found at the same address or line, it | |
13375 | may mean the marker no longer exists. But it may also just mean | |
13376 | the code changed a bit. Maybe the user added a few lines of code | |
13377 | that made the marker move up or down (in line number terms). Ask | |
13378 | the target for info about the marker with the string id as we knew | |
13379 | it. If found, update line number and address in the matching | |
13380 | static tracepoint. This will get confused if there's more than one | |
13381 | marker with the same ID (possible in UST, although unadvised | |
13382 | precisely because it confuses tools). */ | |
13383 | ||
13384 | static struct symtab_and_line | |
13385 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13386 | { | |
d9b3f62e | 13387 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13388 | struct static_tracepoint_marker marker; |
13389 | CORE_ADDR pc; | |
0fb4aa4b PA |
13390 | |
13391 | pc = sal.pc; | |
13392 | if (sal.line) | |
13393 | find_line_pc (sal.symtab, sal.line, &pc); | |
13394 | ||
13395 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13396 | { | |
5d9310c4 | 13397 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13398 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13399 | b->number, tp->static_trace_marker_id.c_str (), |
13400 | marker.str_id.c_str ()); | |
0fb4aa4b | 13401 | |
5d9310c4 | 13402 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13403 | |
13404 | return sal; | |
13405 | } | |
13406 | ||
13407 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13408 | by string ID. */ | |
13409 | if (!sal.explicit_pc | |
13410 | && sal.line != 0 | |
13411 | && sal.symtab != NULL | |
5d9310c4 | 13412 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13413 | { |
5d9310c4 SM |
13414 | std::vector<static_tracepoint_marker> markers |
13415 | = target_static_tracepoint_markers_by_strid | |
13416 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13417 | |
5d9310c4 | 13418 | if (!markers.empty ()) |
0fb4aa4b | 13419 | { |
0fb4aa4b | 13420 | struct symbol *sym; |
80e1d417 | 13421 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13422 | struct ui_out *uiout = current_uiout; |
67994074 | 13423 | struct explicit_location explicit_loc; |
0fb4aa4b | 13424 | |
5d9310c4 | 13425 | tpmarker = &markers[0]; |
0fb4aa4b | 13426 | |
5d9310c4 | 13427 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13428 | |
13429 | warning (_("marker for static tracepoint %d (%s) not " | |
13430 | "found at previous line number"), | |
5d9310c4 | 13431 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13432 | |
51abb421 | 13433 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13434 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13435 | uiout->text ("Now in "); |
0fb4aa4b PA |
13436 | if (sym) |
13437 | { | |
cbe56571 TT |
13438 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
13439 | ui_out_style_kind::FUNCTION); | |
112e8700 | 13440 | uiout->text (" at "); |
0fb4aa4b | 13441 | } |
112e8700 | 13442 | uiout->field_string ("file", |
cbe56571 TT |
13443 | symtab_to_filename_for_display (sal2.symtab), |
13444 | ui_out_style_kind::FILE); | |
112e8700 | 13445 | uiout->text (":"); |
0fb4aa4b | 13446 | |
112e8700 | 13447 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13448 | { |
0b0865da | 13449 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13450 | |
112e8700 | 13451 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13452 | } |
13453 | ||
112e8700 SM |
13454 | uiout->field_int ("line", sal2.line); |
13455 | uiout->text ("\n"); | |
0fb4aa4b | 13456 | |
80e1d417 | 13457 | b->loc->line_number = sal2.line; |
2f202fde | 13458 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13459 | |
d28cd78a | 13460 | b->location.reset (NULL); |
67994074 KS |
13461 | initialize_explicit_location (&explicit_loc); |
13462 | explicit_loc.source_filename | |
00e52e53 | 13463 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13464 | explicit_loc.line_offset.offset = b->loc->line_number; |
13465 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13466 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13467 | |
13468 | /* Might be nice to check if function changed, and warn if | |
13469 | so. */ | |
0fb4aa4b PA |
13470 | } |
13471 | } | |
13472 | return sal; | |
13473 | } | |
13474 | ||
8d3788bd VP |
13475 | /* Returns 1 iff locations A and B are sufficiently same that |
13476 | we don't need to report breakpoint as changed. */ | |
13477 | ||
13478 | static int | |
13479 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13480 | { | |
13481 | while (a && b) | |
13482 | { | |
13483 | if (a->address != b->address) | |
13484 | return 0; | |
13485 | ||
13486 | if (a->shlib_disabled != b->shlib_disabled) | |
13487 | return 0; | |
13488 | ||
13489 | if (a->enabled != b->enabled) | |
13490 | return 0; | |
13491 | ||
13492 | a = a->next; | |
13493 | b = b->next; | |
13494 | } | |
13495 | ||
13496 | if ((a == NULL) != (b == NULL)) | |
13497 | return 0; | |
13498 | ||
13499 | return 1; | |
13500 | } | |
13501 | ||
c2f4122d PA |
13502 | /* Split all locations of B that are bound to PSPACE out of B's |
13503 | location list to a separate list and return that list's head. If | |
13504 | PSPACE is NULL, hoist out all locations of B. */ | |
13505 | ||
13506 | static struct bp_location * | |
13507 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13508 | { | |
13509 | struct bp_location head; | |
13510 | struct bp_location *i = b->loc; | |
13511 | struct bp_location **i_link = &b->loc; | |
13512 | struct bp_location *hoisted = &head; | |
13513 | ||
13514 | if (pspace == NULL) | |
13515 | { | |
13516 | i = b->loc; | |
13517 | b->loc = NULL; | |
13518 | return i; | |
13519 | } | |
13520 | ||
13521 | head.next = NULL; | |
13522 | ||
13523 | while (i != NULL) | |
13524 | { | |
13525 | if (i->pspace == pspace) | |
13526 | { | |
13527 | *i_link = i->next; | |
13528 | i->next = NULL; | |
13529 | hoisted->next = i; | |
13530 | hoisted = i; | |
13531 | } | |
13532 | else | |
13533 | i_link = &i->next; | |
13534 | i = *i_link; | |
13535 | } | |
13536 | ||
13537 | return head.next; | |
13538 | } | |
13539 | ||
13540 | /* Create new breakpoint locations for B (a hardware or software | |
13541 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13542 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13543 | FILTER_PSPACE. Locations of other program spaces are left | |
13544 | untouched. */ | |
f1310107 | 13545 | |
0e30163f | 13546 | void |
0d381245 | 13547 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13548 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13549 | gdb::array_view<const symtab_and_line> sals, |
13550 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13551 | { |
c2f4122d | 13552 | struct bp_location *existing_locations; |
0d381245 | 13553 | |
6c5b2ebe | 13554 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13555 | { |
13556 | /* Ranged breakpoints have only one start location and one end | |
13557 | location. */ | |
13558 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13559 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13560 | "multiple locations found\n"), | |
13561 | b->number); | |
13562 | return; | |
13563 | } | |
f1310107 | 13564 | |
4a64f543 MS |
13565 | /* If there's no new locations, and all existing locations are |
13566 | pending, don't do anything. This optimizes the common case where | |
13567 | all locations are in the same shared library, that was unloaded. | |
13568 | We'd like to retain the location, so that when the library is | |
13569 | loaded again, we don't loose the enabled/disabled status of the | |
13570 | individual locations. */ | |
6c5b2ebe | 13571 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13572 | return; |
13573 | ||
c2f4122d | 13574 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13575 | |
6c5b2ebe | 13576 | for (const auto &sal : sals) |
fe3f5fa8 | 13577 | { |
f8eba3c6 TT |
13578 | struct bp_location *new_loc; |
13579 | ||
6c5b2ebe | 13580 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13581 | |
6c5b2ebe | 13582 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13583 | |
0d381245 VP |
13584 | /* Reparse conditions, they might contain references to the |
13585 | old symtab. */ | |
13586 | if (b->cond_string != NULL) | |
13587 | { | |
bbc13ae3 | 13588 | const char *s; |
fe3f5fa8 | 13589 | |
0d381245 | 13590 | s = b->cond_string; |
492d29ea | 13591 | TRY |
0d381245 | 13592 | { |
6c5b2ebe PA |
13593 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13594 | block_for_pc (sal.pc), | |
0d381245 VP |
13595 | 0); |
13596 | } | |
492d29ea | 13597 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13598 | { |
3e43a32a MS |
13599 | warning (_("failed to reevaluate condition " |
13600 | "for breakpoint %d: %s"), | |
0d381245 VP |
13601 | b->number, e.message); |
13602 | new_loc->enabled = 0; | |
13603 | } | |
492d29ea | 13604 | END_CATCH |
0d381245 | 13605 | } |
fe3f5fa8 | 13606 | |
6c5b2ebe | 13607 | if (!sals_end.empty ()) |
f1310107 | 13608 | { |
6c5b2ebe | 13609 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13610 | |
6c5b2ebe | 13611 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13612 | } |
0d381245 | 13613 | } |
fe3f5fa8 | 13614 | |
4a64f543 MS |
13615 | /* If possible, carry over 'disable' status from existing |
13616 | breakpoints. */ | |
0d381245 VP |
13617 | { |
13618 | struct bp_location *e = existing_locations; | |
776592bf DE |
13619 | /* If there are multiple breakpoints with the same function name, |
13620 | e.g. for inline functions, comparing function names won't work. | |
13621 | Instead compare pc addresses; this is just a heuristic as things | |
13622 | may have moved, but in practice it gives the correct answer | |
13623 | often enough until a better solution is found. */ | |
13624 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13625 | ||
0d381245 VP |
13626 | for (; e; e = e->next) |
13627 | { | |
13628 | if (!e->enabled && e->function_name) | |
13629 | { | |
13630 | struct bp_location *l = b->loc; | |
776592bf DE |
13631 | if (have_ambiguous_names) |
13632 | { | |
13633 | for (; l; l = l->next) | |
f1310107 | 13634 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13635 | { |
13636 | l->enabled = 0; | |
13637 | break; | |
13638 | } | |
13639 | } | |
13640 | else | |
13641 | { | |
13642 | for (; l; l = l->next) | |
13643 | if (l->function_name | |
13644 | && strcmp (e->function_name, l->function_name) == 0) | |
13645 | { | |
13646 | l->enabled = 0; | |
13647 | break; | |
13648 | } | |
13649 | } | |
0d381245 VP |
13650 | } |
13651 | } | |
13652 | } | |
fe3f5fa8 | 13653 | |
8d3788bd | 13654 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13655 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13656 | } |
13657 | ||
f00aae0f | 13658 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13659 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13660 | ||
6c5b2ebe | 13661 | static std::vector<symtab_and_line> |
f00aae0f | 13662 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13663 | struct program_space *search_pspace, int *found) |
ef23e705 | 13664 | { |
492d29ea | 13665 | struct gdb_exception exception = exception_none; |
ef23e705 | 13666 | |
983af33b | 13667 | gdb_assert (b->ops != NULL); |
ef23e705 | 13668 | |
6c5b2ebe PA |
13669 | std::vector<symtab_and_line> sals; |
13670 | ||
492d29ea | 13671 | TRY |
ef23e705 | 13672 | { |
6c5b2ebe | 13673 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13674 | } |
492d29ea | 13675 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13676 | { |
13677 | int not_found_and_ok = 0; | |
492d29ea PA |
13678 | |
13679 | exception = e; | |
13680 | ||
ef23e705 TJB |
13681 | /* For pending breakpoints, it's expected that parsing will |
13682 | fail until the right shared library is loaded. User has | |
13683 | already told to create pending breakpoints and don't need | |
13684 | extra messages. If breakpoint is in bp_shlib_disabled | |
13685 | state, then user already saw the message about that | |
13686 | breakpoint being disabled, and don't want to see more | |
13687 | errors. */ | |
58438ac1 | 13688 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13689 | && (b->condition_not_parsed |
13690 | || (b->loc != NULL | |
13691 | && search_pspace != NULL | |
13692 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13693 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13694 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13695 | || b->enable_state == bp_disabled)) |
13696 | not_found_and_ok = 1; | |
13697 | ||
13698 | if (!not_found_and_ok) | |
13699 | { | |
13700 | /* We surely don't want to warn about the same breakpoint | |
13701 | 10 times. One solution, implemented here, is disable | |
13702 | the breakpoint on error. Another solution would be to | |
13703 | have separate 'warning emitted' flag. Since this | |
13704 | happens only when a binary has changed, I don't know | |
13705 | which approach is better. */ | |
13706 | b->enable_state = bp_disabled; | |
13707 | throw_exception (e); | |
13708 | } | |
13709 | } | |
492d29ea | 13710 | END_CATCH |
ef23e705 | 13711 | |
492d29ea | 13712 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13713 | { |
6c5b2ebe PA |
13714 | for (auto &sal : sals) |
13715 | resolve_sal_pc (&sal); | |
f00aae0f | 13716 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13717 | { |
ed1d1739 KS |
13718 | char *cond_string, *extra_string; |
13719 | int thread, task; | |
ef23e705 | 13720 | |
6c5b2ebe | 13721 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13722 | &cond_string, &thread, &task, |
13723 | &extra_string); | |
f00aae0f | 13724 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13725 | if (cond_string) |
13726 | b->cond_string = cond_string; | |
13727 | b->thread = thread; | |
13728 | b->task = task; | |
e7e0cddf | 13729 | if (extra_string) |
f00aae0f KS |
13730 | { |
13731 | xfree (b->extra_string); | |
13732 | b->extra_string = extra_string; | |
13733 | } | |
ef23e705 TJB |
13734 | b->condition_not_parsed = 0; |
13735 | } | |
13736 | ||
983af33b | 13737 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13738 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13739 | |
58438ac1 TT |
13740 | *found = 1; |
13741 | } | |
13742 | else | |
13743 | *found = 0; | |
ef23e705 TJB |
13744 | |
13745 | return sals; | |
13746 | } | |
13747 | ||
348d480f PA |
13748 | /* The default re_set method, for typical hardware or software |
13749 | breakpoints. Reevaluate the breakpoint and recreate its | |
13750 | locations. */ | |
13751 | ||
13752 | static void | |
28010a5d | 13753 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13754 | { |
c2f4122d | 13755 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13756 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13757 | |
6c5b2ebe PA |
13758 | int found; |
13759 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13760 | filter_pspace, &found); | |
ef23e705 | 13761 | if (found) |
6c5b2ebe | 13762 | expanded = std::move (sals); |
ef23e705 | 13763 | |
f00aae0f | 13764 | if (b->location_range_end != NULL) |
f1310107 | 13765 | { |
6c5b2ebe PA |
13766 | std::vector<symtab_and_line> sals_end |
13767 | = location_to_sals (b, b->location_range_end.get (), | |
13768 | filter_pspace, &found); | |
f1310107 | 13769 | if (found) |
6c5b2ebe | 13770 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13771 | } |
13772 | ||
c2f4122d | 13773 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13774 | } |
13775 | ||
983af33b SDJ |
13776 | /* Default method for creating SALs from an address string. It basically |
13777 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13778 | ||
13779 | static void | |
f00aae0f KS |
13780 | create_sals_from_location_default (const struct event_location *location, |
13781 | struct linespec_result *canonical, | |
13782 | enum bptype type_wanted) | |
983af33b | 13783 | { |
f00aae0f | 13784 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13785 | } |
13786 | ||
13787 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13788 | function for the `create_breakpoints_sal' method of | |
13789 | breakpoint_ops. */ | |
13790 | ||
13791 | static void | |
13792 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13793 | struct linespec_result *canonical, | |
e1e01040 PA |
13794 | gdb::unique_xmalloc_ptr<char> cond_string, |
13795 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13796 | enum bptype type_wanted, |
13797 | enum bpdisp disposition, | |
13798 | int thread, | |
13799 | int task, int ignore_count, | |
13800 | const struct breakpoint_ops *ops, | |
13801 | int from_tty, int enabled, | |
44f238bb | 13802 | int internal, unsigned flags) |
983af33b | 13803 | { |
e1e01040 PA |
13804 | create_breakpoints_sal (gdbarch, canonical, |
13805 | std::move (cond_string), | |
13806 | std::move (extra_string), | |
983af33b SDJ |
13807 | type_wanted, disposition, |
13808 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13809 | enabled, internal, flags); |
983af33b SDJ |
13810 | } |
13811 | ||
13812 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13813 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13814 | |
6c5b2ebe | 13815 | static std::vector<symtab_and_line> |
f00aae0f KS |
13816 | decode_location_default (struct breakpoint *b, |
13817 | const struct event_location *location, | |
6c5b2ebe | 13818 | struct program_space *search_pspace) |
983af33b SDJ |
13819 | { |
13820 | struct linespec_result canonical; | |
13821 | ||
c2f4122d | 13822 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13823 | (struct symtab *) NULL, 0, |
13824 | &canonical, multiple_symbols_all, | |
13825 | b->filter); | |
13826 | ||
13827 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13828 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13829 | |
6c5b2ebe | 13830 | if (!canonical.lsals.empty ()) |
983af33b | 13831 | { |
6c5b2ebe PA |
13832 | const linespec_sals &lsal = canonical.lsals[0]; |
13833 | return std::move (lsal.sals); | |
983af33b | 13834 | } |
6c5b2ebe | 13835 | return {}; |
983af33b SDJ |
13836 | } |
13837 | ||
bf469271 | 13838 | /* Reset a breakpoint. */ |
c906108c | 13839 | |
bf469271 PA |
13840 | static void |
13841 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13842 | { |
fdf44873 TT |
13843 | input_radix = b->input_radix; |
13844 | set_language (b->language); | |
c906108c | 13845 | |
348d480f | 13846 | b->ops->re_set (b); |
c906108c SS |
13847 | } |
13848 | ||
c2f4122d PA |
13849 | /* Re-set breakpoint locations for the current program space. |
13850 | Locations bound to other program spaces are left untouched. */ | |
13851 | ||
c906108c | 13852 | void |
69de3c6a | 13853 | breakpoint_re_set (void) |
c906108c | 13854 | { |
35df4500 | 13855 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13856 | |
c5aa993b | 13857 | { |
fdf44873 TT |
13858 | scoped_restore_current_language save_language; |
13859 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13860 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13861 | |
8e817061 JB |
13862 | /* breakpoint_re_set_one sets the current_language to the language |
13863 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13864 | before re-evaluating the breakpoint's location. This change can | |
13865 | unfortunately get undone by accident if the language_mode is set | |
13866 | to auto, and we either switch frames, or more likely in this context, | |
13867 | we select the current frame. | |
13868 | ||
13869 | We prevent this by temporarily turning the language_mode to | |
13870 | language_mode_manual. We restore it once all breakpoints | |
13871 | have been reset. */ | |
13872 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13873 | language_mode = language_mode_manual; | |
13874 | ||
5ed8105e PA |
13875 | /* Note: we must not try to insert locations until after all |
13876 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13877 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13878 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13879 | |
5ed8105e PA |
13880 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13881 | { | |
bf469271 PA |
13882 | TRY |
13883 | { | |
13884 | breakpoint_re_set_one (b); | |
13885 | } | |
13886 | CATCH (ex, RETURN_MASK_ALL) | |
13887 | { | |
13888 | exception_fprintf (gdb_stderr, ex, | |
13889 | "Error in re-setting breakpoint %d: ", | |
13890 | b->number); | |
13891 | } | |
13892 | END_CATCH | |
5ed8105e | 13893 | } |
5ed8105e PA |
13894 | |
13895 | jit_breakpoint_re_set (); | |
13896 | } | |
6c95b8df | 13897 | |
af02033e PP |
13898 | create_overlay_event_breakpoint (); |
13899 | create_longjmp_master_breakpoint (); | |
13900 | create_std_terminate_master_breakpoint (); | |
186c406b | 13901 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13902 | |
13903 | /* Now we can insert. */ | |
13904 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13905 | } |
13906 | \f | |
c906108c SS |
13907 | /* Reset the thread number of this breakpoint: |
13908 | ||
13909 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13910 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13911 | void |
fba45db2 | 13912 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13913 | { |
13914 | if (b->thread != -1) | |
13915 | { | |
00431a78 | 13916 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13917 | |
13918 | /* We're being called after following a fork. The new fork is | |
13919 | selected as current, and unless this was a vfork will have a | |
13920 | different program space from the original thread. Reset that | |
13921 | as well. */ | |
13922 | b->loc->pspace = current_program_space; | |
c906108c SS |
13923 | } |
13924 | } | |
13925 | ||
03ac34d5 MS |
13926 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13927 | If from_tty is nonzero, it prints a message to that effect, | |
13928 | which ends with a period (no newline). */ | |
13929 | ||
c906108c | 13930 | void |
fba45db2 | 13931 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13932 | { |
52f0bd74 | 13933 | struct breakpoint *b; |
c906108c SS |
13934 | |
13935 | if (count < 0) | |
13936 | count = 0; | |
13937 | ||
13938 | ALL_BREAKPOINTS (b) | |
13939 | if (b->number == bptnum) | |
c5aa993b | 13940 | { |
d77f58be SS |
13941 | if (is_tracepoint (b)) |
13942 | { | |
13943 | if (from_tty && count != 0) | |
13944 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13945 | bptnum); | |
13946 | return; | |
13947 | } | |
13948 | ||
c5aa993b | 13949 | b->ignore_count = count; |
221ea385 KS |
13950 | if (from_tty) |
13951 | { | |
13952 | if (count == 0) | |
3e43a32a MS |
13953 | printf_filtered (_("Will stop next time " |
13954 | "breakpoint %d is reached."), | |
221ea385 KS |
13955 | bptnum); |
13956 | else if (count == 1) | |
a3f17187 | 13957 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13958 | bptnum); |
13959 | else | |
3e43a32a MS |
13960 | printf_filtered (_("Will ignore next %d " |
13961 | "crossings of breakpoint %d."), | |
221ea385 KS |
13962 | count, bptnum); |
13963 | } | |
76727919 | 13964 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13965 | return; |
13966 | } | |
c906108c | 13967 | |
8a3fe4f8 | 13968 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13969 | } |
13970 | ||
c906108c SS |
13971 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13972 | ||
13973 | static void | |
0b39b52e | 13974 | ignore_command (const char *args, int from_tty) |
c906108c | 13975 | { |
0b39b52e | 13976 | const char *p = args; |
52f0bd74 | 13977 | int num; |
c906108c SS |
13978 | |
13979 | if (p == 0) | |
e2e0b3e5 | 13980 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13981 | |
c906108c | 13982 | num = get_number (&p); |
5c44784c | 13983 | if (num == 0) |
8a3fe4f8 | 13984 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13985 | if (*p == 0) |
8a3fe4f8 | 13986 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13987 | |
13988 | set_ignore_count (num, | |
13989 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13990 | from_tty); | |
221ea385 KS |
13991 | if (from_tty) |
13992 | printf_filtered ("\n"); | |
c906108c SS |
13993 | } |
13994 | \f | |
d0fe4701 XR |
13995 | |
13996 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13997 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13998 | |
13999 | static void | |
d0fe4701 XR |
14000 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14001 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14002 | { |
d0fe4701 XR |
14003 | if (bp_num_range.first == 0) |
14004 | { | |
14005 | warning (_("bad breakpoint number at or near '%d'"), | |
14006 | bp_num_range.first); | |
14007 | } | |
14008 | else | |
c906108c | 14009 | { |
d0fe4701 | 14010 | struct breakpoint *b, *tmp; |
197f0a60 | 14011 | |
d0fe4701 | 14012 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14013 | { |
d0fe4701 XR |
14014 | bool match = false; |
14015 | ||
5c44784c | 14016 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14017 | if (b->number == i) |
5c44784c | 14018 | { |
bfd28288 | 14019 | match = true; |
48649e1b | 14020 | function (b); |
11cf8741 | 14021 | break; |
5c44784c | 14022 | } |
bfd28288 | 14023 | if (!match) |
d0fe4701 | 14024 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14025 | } |
c906108c SS |
14026 | } |
14027 | } | |
14028 | ||
d0fe4701 XR |
14029 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14030 | ARGS. */ | |
14031 | ||
14032 | static void | |
14033 | map_breakpoint_numbers (const char *args, | |
14034 | gdb::function_view<void (breakpoint *)> function) | |
14035 | { | |
14036 | if (args == NULL || *args == '\0') | |
14037 | error_no_arg (_("one or more breakpoint numbers")); | |
14038 | ||
14039 | number_or_range_parser parser (args); | |
14040 | ||
14041 | while (!parser.finished ()) | |
14042 | { | |
14043 | int num = parser.get_number (); | |
14044 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14045 | } | |
14046 | } | |
14047 | ||
14048 | /* Return the breakpoint location structure corresponding to the | |
14049 | BP_NUM and LOC_NUM values. */ | |
14050 | ||
0d381245 | 14051 | static struct bp_location * |
d0fe4701 | 14052 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14053 | { |
0d381245 | 14054 | struct breakpoint *b; |
0d381245 VP |
14055 | |
14056 | ALL_BREAKPOINTS (b) | |
14057 | if (b->number == bp_num) | |
14058 | { | |
14059 | break; | |
14060 | } | |
14061 | ||
14062 | if (!b || b->number != bp_num) | |
d0fe4701 | 14063 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14064 | |
0d381245 | 14065 | if (loc_num == 0) |
d0fe4701 | 14066 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14067 | |
d0fe4701 XR |
14068 | int n = 0; |
14069 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14070 | if (++n == loc_num) | |
14071 | return loc; | |
14072 | ||
14073 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14074 | } |
14075 | ||
95e95a6d PA |
14076 | /* Modes of operation for extract_bp_num. */ |
14077 | enum class extract_bp_kind | |
14078 | { | |
14079 | /* Extracting a breakpoint number. */ | |
14080 | bp, | |
14081 | ||
14082 | /* Extracting a location number. */ | |
14083 | loc, | |
14084 | }; | |
14085 | ||
14086 | /* Extract a breakpoint or location number (as determined by KIND) | |
14087 | from the string starting at START. TRAILER is a character which | |
14088 | can be found after the number. If you don't want a trailer, use | |
14089 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14090 | string. This always returns a positive integer. */ | |
14091 | ||
14092 | static int | |
14093 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14094 | int trailer, const char **end_out = NULL) | |
14095 | { | |
14096 | const char *end = start; | |
14097 | int num = get_number_trailer (&end, trailer); | |
14098 | if (num < 0) | |
14099 | error (kind == extract_bp_kind::bp | |
14100 | ? _("Negative breakpoint number '%.*s'") | |
14101 | : _("Negative breakpoint location number '%.*s'"), | |
14102 | int (end - start), start); | |
14103 | if (num == 0) | |
14104 | error (kind == extract_bp_kind::bp | |
14105 | ? _("Bad breakpoint number '%.*s'") | |
14106 | : _("Bad breakpoint location number '%.*s'"), | |
14107 | int (end - start), start); | |
14108 | ||
14109 | if (end_out != NULL) | |
14110 | *end_out = end; | |
14111 | return num; | |
14112 | } | |
14113 | ||
14114 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14115 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14116 | representing the (inclusive) range. The returned pair's elements | |
14117 | are always positive integers. */ | |
14118 | ||
14119 | static std::pair<int, int> | |
14120 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14121 | const std::string &arg, | |
14122 | std::string::size_type arg_offset) | |
14123 | { | |
14124 | std::pair<int, int> range; | |
14125 | const char *bp_loc = &arg[arg_offset]; | |
14126 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14127 | if (dash != std::string::npos) | |
14128 | { | |
14129 | /* bp_loc is a range (x-z). */ | |
14130 | if (arg.length () == dash + 1) | |
14131 | error (kind == extract_bp_kind::bp | |
14132 | ? _("Bad breakpoint number at or near: '%s'") | |
14133 | : _("Bad breakpoint location number at or near: '%s'"), | |
14134 | bp_loc); | |
14135 | ||
14136 | const char *end; | |
14137 | const char *start_first = bp_loc; | |
14138 | const char *start_second = &arg[dash + 1]; | |
14139 | range.first = extract_bp_num (kind, start_first, '-'); | |
14140 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14141 | ||
14142 | if (range.first > range.second) | |
14143 | error (kind == extract_bp_kind::bp | |
14144 | ? _("Inverted breakpoint range at '%.*s'") | |
14145 | : _("Inverted breakpoint location range at '%.*s'"), | |
14146 | int (end - start_first), start_first); | |
14147 | } | |
14148 | else | |
14149 | { | |
14150 | /* bp_loc is a single value. */ | |
14151 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14152 | range.second = range.first; | |
14153 | } | |
14154 | return range; | |
14155 | } | |
14156 | ||
d0fe4701 XR |
14157 | /* Extract the breakpoint/location range specified by ARG. Returns |
14158 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14159 | BP_LOC_RANGE. | |
14160 | ||
14161 | ARG may be in any of the following forms: | |
14162 | ||
14163 | x where 'x' is a breakpoint number. | |
14164 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14165 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14166 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14167 | location number range. | |
14168 | */ | |
14169 | ||
cc638e86 | 14170 | static void |
d0fe4701 XR |
14171 | extract_bp_number_and_location (const std::string &arg, |
14172 | std::pair<int, int> &bp_num_range, | |
14173 | std::pair<int, int> &bp_loc_range) | |
14174 | { | |
14175 | std::string::size_type dot = arg.find ('.'); | |
14176 | ||
14177 | if (dot != std::string::npos) | |
14178 | { | |
14179 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14180 | ||
14181 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14182 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14183 | |
95e95a6d PA |
14184 | bp_num_range.first |
14185 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14186 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14187 | |
95e95a6d PA |
14188 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14189 | arg, dot + 1); | |
d0fe4701 XR |
14190 | } |
14191 | else | |
14192 | { | |
14193 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14194 | |
95e95a6d | 14195 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14196 | bp_loc_range.first = 0; |
14197 | bp_loc_range.second = 0; | |
14198 | } | |
d0fe4701 XR |
14199 | } |
14200 | ||
14201 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14202 | specifies whether to enable or disable. */ | |
14203 | ||
14204 | static void | |
14205 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14206 | { | |
14207 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14208 | if (loc != NULL) | |
14209 | { | |
14210 | if (loc->enabled != enable) | |
14211 | { | |
14212 | loc->enabled = enable; | |
14213 | mark_breakpoint_location_modified (loc); | |
14214 | } | |
14215 | if (target_supports_enable_disable_tracepoint () | |
14216 | && current_trace_status ()->running && loc->owner | |
14217 | && is_tracepoint (loc->owner)) | |
14218 | target_disable_tracepoint (loc); | |
14219 | } | |
14220 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14221 | |
14222 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14223 | } |
14224 | ||
14225 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14226 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14227 | (inclusive) range of location numbers of that breakpoint to | |
14228 | enable/disable. ENABLE specifies whether to enable or disable the | |
14229 | location. */ | |
14230 | ||
14231 | static void | |
14232 | enable_disable_breakpoint_location_range (int bp_num, | |
14233 | std::pair<int, int> &bp_loc_range, | |
14234 | bool enable) | |
14235 | { | |
14236 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14237 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14238 | } | |
0d381245 | 14239 | |
1900040c MS |
14240 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14241 | If from_tty is nonzero, it prints a message to that effect, | |
14242 | which ends with a period (no newline). */ | |
14243 | ||
c906108c | 14244 | void |
fba45db2 | 14245 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14246 | { |
14247 | /* Never disable a watchpoint scope breakpoint; we want to | |
14248 | hit them when we leave scope so we can delete both the | |
14249 | watchpoint and its scope breakpoint at that time. */ | |
14250 | if (bpt->type == bp_watchpoint_scope) | |
14251 | return; | |
14252 | ||
b5de0fa7 | 14253 | bpt->enable_state = bp_disabled; |
c906108c | 14254 | |
b775012e LM |
14255 | /* Mark breakpoint locations modified. */ |
14256 | mark_breakpoint_modified (bpt); | |
14257 | ||
d248b706 KY |
14258 | if (target_supports_enable_disable_tracepoint () |
14259 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14260 | { | |
14261 | struct bp_location *location; | |
14262 | ||
14263 | for (location = bpt->loc; location; location = location->next) | |
14264 | target_disable_tracepoint (location); | |
14265 | } | |
14266 | ||
44702360 | 14267 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14268 | |
76727919 | 14269 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14270 | } |
14271 | ||
d0fe4701 XR |
14272 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14273 | specified in ARGS. ARGS may be in any of the formats handled by | |
14274 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14275 | or disable the breakpoints/locations. */ | |
14276 | ||
c906108c | 14277 | static void |
d0fe4701 | 14278 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14279 | { |
c906108c | 14280 | if (args == 0) |
46c6471b PA |
14281 | { |
14282 | struct breakpoint *bpt; | |
14283 | ||
14284 | ALL_BREAKPOINTS (bpt) | |
14285 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14286 | { |
14287 | if (enable) | |
14288 | enable_breakpoint (bpt); | |
14289 | else | |
14290 | disable_breakpoint (bpt); | |
14291 | } | |
46c6471b | 14292 | } |
9eaabc75 | 14293 | else |
0d381245 | 14294 | { |
cb791d59 | 14295 | std::string num = extract_arg (&args); |
9eaabc75 | 14296 | |
cb791d59 | 14297 | while (!num.empty ()) |
d248b706 | 14298 | { |
d0fe4701 | 14299 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14300 | |
cc638e86 PA |
14301 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14302 | ||
14303 | if (bp_loc_range.first == bp_loc_range.second | |
14304 | && bp_loc_range.first == 0) | |
d0fe4701 | 14305 | { |
cc638e86 PA |
14306 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14307 | map_breakpoint_number_range (bp_num_range, | |
14308 | enable | |
14309 | ? enable_breakpoint | |
14310 | : disable_breakpoint); | |
14311 | } | |
14312 | else | |
14313 | { | |
14314 | /* Handle breakpoint ids with formats 'x.y' or | |
14315 | 'x.y-z'. */ | |
14316 | enable_disable_breakpoint_location_range | |
14317 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14318 | } |
9eaabc75 | 14319 | num = extract_arg (&args); |
d248b706 | 14320 | } |
0d381245 | 14321 | } |
c906108c SS |
14322 | } |
14323 | ||
d0fe4701 XR |
14324 | /* The disable command disables the specified breakpoints/locations |
14325 | (or all defined breakpoints) so they're no longer effective in | |
14326 | stopping the inferior. ARGS may be in any of the forms defined in | |
14327 | extract_bp_number_and_location. */ | |
14328 | ||
14329 | static void | |
14330 | disable_command (const char *args, int from_tty) | |
14331 | { | |
14332 | enable_disable_command (args, from_tty, false); | |
14333 | } | |
14334 | ||
c906108c | 14335 | static void |
816338b5 SS |
14336 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14337 | int count) | |
c906108c | 14338 | { |
afe38095 | 14339 | int target_resources_ok; |
c906108c SS |
14340 | |
14341 | if (bpt->type == bp_hardware_breakpoint) | |
14342 | { | |
14343 | int i; | |
c5aa993b | 14344 | i = hw_breakpoint_used_count (); |
53a5351d | 14345 | target_resources_ok = |
d92524f1 | 14346 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14347 | i + 1, 0); |
c906108c | 14348 | if (target_resources_ok == 0) |
8a3fe4f8 | 14349 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14350 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14351 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14352 | } |
14353 | ||
cc60f2e3 | 14354 | if (is_watchpoint (bpt)) |
c906108c | 14355 | { |
d07205c2 | 14356 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14357 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14358 | |
492d29ea | 14359 | TRY |
c906108c | 14360 | { |
3a5c3e22 PA |
14361 | struct watchpoint *w = (struct watchpoint *) bpt; |
14362 | ||
1e718ff1 TJB |
14363 | orig_enable_state = bpt->enable_state; |
14364 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14365 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14366 | } |
492d29ea | 14367 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14368 | { |
1e718ff1 | 14369 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14370 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14371 | bpt->number); | |
14372 | return; | |
c5aa993b | 14373 | } |
492d29ea | 14374 | END_CATCH |
c906108c | 14375 | } |
0101ce28 | 14376 | |
b775012e LM |
14377 | bpt->enable_state = bp_enabled; |
14378 | ||
14379 | /* Mark breakpoint locations modified. */ | |
14380 | mark_breakpoint_modified (bpt); | |
14381 | ||
d248b706 KY |
14382 | if (target_supports_enable_disable_tracepoint () |
14383 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14384 | { | |
14385 | struct bp_location *location; | |
14386 | ||
14387 | for (location = bpt->loc; location; location = location->next) | |
14388 | target_enable_tracepoint (location); | |
14389 | } | |
14390 | ||
b4c291bb | 14391 | bpt->disposition = disposition; |
816338b5 | 14392 | bpt->enable_count = count; |
44702360 | 14393 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14394 | |
76727919 | 14395 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14396 | } |
14397 | ||
fe3f5fa8 | 14398 | |
c906108c | 14399 | void |
fba45db2 | 14400 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14401 | { |
816338b5 | 14402 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14403 | } |
14404 | ||
d0fe4701 XR |
14405 | /* The enable command enables the specified breakpoints/locations (or |
14406 | all defined breakpoints) so they once again become (or continue to | |
14407 | be) effective in stopping the inferior. ARGS may be in any of the | |
14408 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14409 | |
c906108c | 14410 | static void |
981a3fb3 | 14411 | enable_command (const char *args, int from_tty) |
c906108c | 14412 | { |
d0fe4701 | 14413 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14414 | } |
14415 | ||
c906108c | 14416 | static void |
4495129a | 14417 | enable_once_command (const char *args, int from_tty) |
c906108c | 14418 | { |
48649e1b TT |
14419 | map_breakpoint_numbers |
14420 | (args, [&] (breakpoint *b) | |
14421 | { | |
14422 | iterate_over_related_breakpoints | |
14423 | (b, [&] (breakpoint *bpt) | |
14424 | { | |
14425 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14426 | }); | |
14427 | }); | |
816338b5 SS |
14428 | } |
14429 | ||
14430 | static void | |
4495129a | 14431 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14432 | { |
b9d61307 SM |
14433 | int count; |
14434 | ||
14435 | if (args == NULL) | |
14436 | error_no_arg (_("hit count")); | |
14437 | ||
14438 | count = get_number (&args); | |
816338b5 | 14439 | |
48649e1b TT |
14440 | map_breakpoint_numbers |
14441 | (args, [&] (breakpoint *b) | |
14442 | { | |
14443 | iterate_over_related_breakpoints | |
14444 | (b, [&] (breakpoint *bpt) | |
14445 | { | |
14446 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14447 | }); | |
14448 | }); | |
c906108c SS |
14449 | } |
14450 | ||
c906108c | 14451 | static void |
4495129a | 14452 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14453 | { |
48649e1b TT |
14454 | map_breakpoint_numbers |
14455 | (args, [&] (breakpoint *b) | |
14456 | { | |
14457 | iterate_over_related_breakpoints | |
14458 | (b, [&] (breakpoint *bpt) | |
14459 | { | |
14460 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14461 | }); | |
14462 | }); | |
c906108c SS |
14463 | } |
14464 | \f | |
fa8d40ab | 14465 | static void |
981a3fb3 | 14466 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14467 | { |
14468 | } | |
14469 | ||
14470 | static void | |
981a3fb3 | 14471 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14472 | { |
14473 | } | |
14474 | ||
1f3b5d1b PP |
14475 | /* Invalidate last known value of any hardware watchpoint if |
14476 | the memory which that value represents has been written to by | |
14477 | GDB itself. */ | |
14478 | ||
14479 | static void | |
8de0566d YQ |
14480 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14481 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14482 | const bfd_byte *data) |
14483 | { | |
14484 | struct breakpoint *bp; | |
14485 | ||
14486 | ALL_BREAKPOINTS (bp) | |
14487 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14488 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14489 | { |
3a5c3e22 | 14490 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14491 | |
850645cf | 14492 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14493 | { |
14494 | struct bp_location *loc; | |
14495 | ||
14496 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14497 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14498 | && loc->address + loc->length > addr | |
14499 | && addr + len > loc->address) | |
14500 | { | |
3a5c3e22 PA |
14501 | wp->val = NULL; |
14502 | wp->val_valid = 0; | |
14503 | } | |
14504 | } | |
1f3b5d1b PP |
14505 | } |
14506 | } | |
14507 | ||
8181d85f DJ |
14508 | /* Create and insert a breakpoint for software single step. */ |
14509 | ||
14510 | void | |
6c95b8df | 14511 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14512 | const address_space *aspace, |
4a64f543 | 14513 | CORE_ADDR next_pc) |
8181d85f | 14514 | { |
7c16b83e PA |
14515 | struct thread_info *tp = inferior_thread (); |
14516 | struct symtab_and_line sal; | |
14517 | CORE_ADDR pc = next_pc; | |
8181d85f | 14518 | |
34b7e8a6 PA |
14519 | if (tp->control.single_step_breakpoints == NULL) |
14520 | { | |
14521 | tp->control.single_step_breakpoints | |
5d5658a1 | 14522 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14523 | } |
8181d85f | 14524 | |
7c16b83e PA |
14525 | sal = find_pc_line (pc, 0); |
14526 | sal.pc = pc; | |
14527 | sal.section = find_pc_overlay (pc); | |
14528 | sal.explicit_pc = 1; | |
34b7e8a6 | 14529 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14530 | |
7c16b83e | 14531 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14532 | } |
14533 | ||
93f9a11f YQ |
14534 | /* Insert single step breakpoints according to the current state. */ |
14535 | ||
14536 | int | |
14537 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14538 | { | |
f5ea389a | 14539 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14540 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14541 | |
f5ea389a | 14542 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14543 | |
a0ff9e1a | 14544 | if (!next_pcs.empty ()) |
93f9a11f | 14545 | { |
f5ea389a | 14546 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14547 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14548 | |
a0ff9e1a | 14549 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14550 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14551 | ||
93f9a11f YQ |
14552 | return 1; |
14553 | } | |
14554 | else | |
14555 | return 0; | |
14556 | } | |
14557 | ||
34b7e8a6 | 14558 | /* See breakpoint.h. */ |
f02253f1 HZ |
14559 | |
14560 | int | |
7c16b83e | 14561 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14562 | const address_space *aspace, |
7c16b83e | 14563 | CORE_ADDR pc) |
1aafd4da | 14564 | { |
7c16b83e | 14565 | struct bp_location *loc; |
1aafd4da | 14566 | |
7c16b83e PA |
14567 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14568 | if (loc->inserted | |
14569 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14570 | return 1; | |
1aafd4da | 14571 | |
7c16b83e | 14572 | return 0; |
ef370185 JB |
14573 | } |
14574 | ||
14575 | /* Check whether a software single-step breakpoint is inserted at | |
14576 | PC. */ | |
14577 | ||
14578 | int | |
accd0bcd | 14579 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14580 | CORE_ADDR pc) |
14581 | { | |
34b7e8a6 PA |
14582 | struct breakpoint *bpt; |
14583 | ||
14584 | ALL_BREAKPOINTS (bpt) | |
14585 | { | |
14586 | if (bpt->type == bp_single_step | |
14587 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14588 | return 1; | |
14589 | } | |
14590 | return 0; | |
1aafd4da UW |
14591 | } |
14592 | ||
1042e4c0 SS |
14593 | /* Tracepoint-specific operations. */ |
14594 | ||
14595 | /* Set tracepoint count to NUM. */ | |
14596 | static void | |
14597 | set_tracepoint_count (int num) | |
14598 | { | |
14599 | tracepoint_count = num; | |
4fa62494 | 14600 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14601 | } |
14602 | ||
70221824 | 14603 | static void |
0b39b52e | 14604 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14605 | { |
55aa24fb | 14606 | struct breakpoint_ops *ops; |
55aa24fb | 14607 | |
ffc2605c TT |
14608 | event_location_up location = string_to_event_location (&arg, |
14609 | current_language); | |
5b56227b | 14610 | if (location != NULL |
ffc2605c | 14611 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14612 | ops = &tracepoint_probe_breakpoint_ops; |
14613 | else | |
14614 | ops = &tracepoint_breakpoint_ops; | |
14615 | ||
558a9d82 | 14616 | create_breakpoint (get_current_arch (), |
ffc2605c | 14617 | location.get (), |
f00aae0f | 14618 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14619 | 0 /* tempflag */, |
14620 | bp_tracepoint /* type_wanted */, | |
14621 | 0 /* Ignore count */, | |
14622 | pending_break_support, | |
14623 | ops, | |
14624 | from_tty, | |
14625 | 1 /* enabled */, | |
14626 | 0 /* internal */, 0); | |
1042e4c0 SS |
14627 | } |
14628 | ||
70221824 | 14629 | static void |
0b39b52e | 14630 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14631 | { |
ffc2605c TT |
14632 | event_location_up location = string_to_event_location (&arg, |
14633 | current_language); | |
558a9d82 | 14634 | create_breakpoint (get_current_arch (), |
ffc2605c | 14635 | location.get (), |
f00aae0f | 14636 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14637 | 0 /* tempflag */, |
14638 | bp_fast_tracepoint /* type_wanted */, | |
14639 | 0 /* Ignore count */, | |
14640 | pending_break_support, | |
14641 | &tracepoint_breakpoint_ops, | |
14642 | from_tty, | |
14643 | 1 /* enabled */, | |
14644 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14645 | } |
14646 | ||
14647 | /* strace command implementation. Creates a static tracepoint. */ | |
14648 | ||
70221824 | 14649 | static void |
0b39b52e | 14650 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14651 | { |
983af33b | 14652 | struct breakpoint_ops *ops; |
ffc2605c | 14653 | event_location_up location; |
983af33b SDJ |
14654 | |
14655 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14656 | or with a normal static tracepoint. */ | |
61012eef | 14657 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14658 | { |
14659 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14660 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14661 | } |
983af33b | 14662 | else |
f00aae0f KS |
14663 | { |
14664 | ops = &tracepoint_breakpoint_ops; | |
14665 | location = string_to_event_location (&arg, current_language); | |
14666 | } | |
983af33b | 14667 | |
558a9d82 | 14668 | create_breakpoint (get_current_arch (), |
ffc2605c | 14669 | location.get (), |
f00aae0f | 14670 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14671 | 0 /* tempflag */, |
14672 | bp_static_tracepoint /* type_wanted */, | |
14673 | 0 /* Ignore count */, | |
14674 | pending_break_support, | |
14675 | ops, | |
14676 | from_tty, | |
14677 | 1 /* enabled */, | |
14678 | 0 /* internal */, 0); | |
7a697b8d SS |
14679 | } |
14680 | ||
409873ef SS |
14681 | /* Set up a fake reader function that gets command lines from a linked |
14682 | list that was acquired during tracepoint uploading. */ | |
14683 | ||
14684 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14685 | static int next_cmd; |
409873ef SS |
14686 | |
14687 | static char * | |
14688 | read_uploaded_action (void) | |
14689 | { | |
a18ba4e4 | 14690 | char *rslt = nullptr; |
409873ef | 14691 | |
a18ba4e4 SM |
14692 | if (next_cmd < this_utp->cmd_strings.size ()) |
14693 | { | |
14694 | rslt = this_utp->cmd_strings[next_cmd]; | |
14695 | next_cmd++; | |
14696 | } | |
409873ef SS |
14697 | |
14698 | return rslt; | |
14699 | } | |
14700 | ||
00bf0b85 SS |
14701 | /* Given information about a tracepoint as recorded on a target (which |
14702 | can be either a live system or a trace file), attempt to create an | |
14703 | equivalent GDB tracepoint. This is not a reliable process, since | |
14704 | the target does not necessarily have all the information used when | |
14705 | the tracepoint was originally defined. */ | |
14706 | ||
d9b3f62e | 14707 | struct tracepoint * |
00bf0b85 | 14708 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14709 | { |
f2fc3015 TT |
14710 | const char *addr_str; |
14711 | char small_buf[100]; | |
d9b3f62e | 14712 | struct tracepoint *tp; |
fd9b8c24 | 14713 | |
409873ef SS |
14714 | if (utp->at_string) |
14715 | addr_str = utp->at_string; | |
14716 | else | |
14717 | { | |
14718 | /* In the absence of a source location, fall back to raw | |
14719 | address. Since there is no way to confirm that the address | |
14720 | means the same thing as when the trace was started, warn the | |
14721 | user. */ | |
3e43a32a MS |
14722 | warning (_("Uploaded tracepoint %d has no " |
14723 | "source location, using raw address"), | |
409873ef | 14724 | utp->number); |
8c042590 | 14725 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14726 | addr_str = small_buf; |
14727 | } | |
14728 | ||
14729 | /* There's not much we can do with a sequence of bytecodes. */ | |
14730 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14731 | warning (_("Uploaded tracepoint %d condition " |
14732 | "has no source form, ignoring it"), | |
409873ef | 14733 | utp->number); |
d5551862 | 14734 | |
ffc2605c TT |
14735 | event_location_up location = string_to_event_location (&addr_str, |
14736 | current_language); | |
8cdf0e15 | 14737 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14738 | location.get (), |
f00aae0f | 14739 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14740 | 0 /* parse cond/thread */, |
8cdf0e15 | 14741 | 0 /* tempflag */, |
0fb4aa4b | 14742 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14743 | 0 /* Ignore count */, |
14744 | pending_break_support, | |
348d480f | 14745 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14746 | 0 /* from_tty */, |
84f4c1fe | 14747 | utp->enabled /* enabled */, |
44f238bb PA |
14748 | 0 /* internal */, |
14749 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14750 | return NULL; |
fd9b8c24 | 14751 | |
409873ef | 14752 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14753 | tp = get_tracepoint (tracepoint_count); |
14754 | gdb_assert (tp != NULL); | |
d5551862 | 14755 | |
00bf0b85 SS |
14756 | if (utp->pass > 0) |
14757 | { | |
8c042590 | 14758 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14759 | tp->number); |
00bf0b85 | 14760 | |
409873ef | 14761 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14762 | } |
14763 | ||
409873ef SS |
14764 | /* If we have uploaded versions of the original commands, set up a |
14765 | special-purpose "reader" function and call the usual command line | |
14766 | reader, then pass the result to the breakpoint command-setting | |
14767 | function. */ | |
a18ba4e4 | 14768 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14769 | { |
12973681 | 14770 | counted_command_line cmd_list; |
00bf0b85 | 14771 | |
409873ef | 14772 | this_utp = utp; |
3149d8c1 | 14773 | next_cmd = 0; |
d5551862 | 14774 | |
60b3cef2 | 14775 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14776 | |
c1fc2657 | 14777 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14778 | } |
a18ba4e4 SM |
14779 | else if (!utp->actions.empty () |
14780 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14781 | warning (_("Uploaded tracepoint %d actions " |
14782 | "have no source form, ignoring them"), | |
409873ef | 14783 | utp->number); |
00bf0b85 | 14784 | |
f196051f | 14785 | /* Copy any status information that might be available. */ |
c1fc2657 | 14786 | tp->hit_count = utp->hit_count; |
f196051f SS |
14787 | tp->traceframe_usage = utp->traceframe_usage; |
14788 | ||
00bf0b85 | 14789 | return tp; |
d9b3f62e | 14790 | } |
00bf0b85 | 14791 | |
1042e4c0 SS |
14792 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14793 | omitted. */ | |
14794 | ||
14795 | static void | |
1d12d88f | 14796 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14797 | { |
79a45e25 | 14798 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14799 | int num_printed; |
1042e4c0 | 14800 | |
e5a67952 | 14801 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14802 | |
14803 | if (num_printed == 0) | |
1042e4c0 | 14804 | { |
e5a67952 | 14805 | if (args == NULL || *args == '\0') |
112e8700 | 14806 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14807 | else |
112e8700 | 14808 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14809 | } |
ad443146 SS |
14810 | |
14811 | default_collect_info (); | |
1042e4c0 SS |
14812 | } |
14813 | ||
4a64f543 | 14814 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14815 | Not supported by all targets. */ |
14816 | static void | |
5fed81ff | 14817 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14818 | { |
14819 | enable_command (args, from_tty); | |
14820 | } | |
14821 | ||
4a64f543 | 14822 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14823 | Not supported by all targets. */ |
14824 | static void | |
5fed81ff | 14825 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14826 | { |
14827 | disable_command (args, from_tty); | |
14828 | } | |
14829 | ||
4a64f543 | 14830 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14831 | static void |
4495129a | 14832 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14833 | { |
35df4500 | 14834 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14835 | |
14836 | dont_repeat (); | |
14837 | ||
14838 | if (arg == 0) | |
14839 | { | |
14840 | int breaks_to_delete = 0; | |
14841 | ||
14842 | /* Delete all breakpoints if no argument. | |
14843 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14844 | have to be deleted with an explicit breakpoint number |
14845 | argument. */ | |
1042e4c0 | 14846 | ALL_TRACEPOINTS (b) |
46c6471b | 14847 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14848 | { |
14849 | breaks_to_delete = 1; | |
14850 | break; | |
14851 | } | |
1042e4c0 SS |
14852 | |
14853 | /* Ask user only if there are some breakpoints to delete. */ | |
14854 | if (!from_tty | |
14855 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14856 | { | |
35df4500 | 14857 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14858 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14859 | delete_breakpoint (b); |
1042e4c0 SS |
14860 | } |
14861 | } | |
14862 | else | |
48649e1b | 14863 | map_breakpoint_numbers |
b926417a | 14864 | (arg, [&] (breakpoint *br) |
48649e1b | 14865 | { |
b926417a | 14866 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14867 | }); |
1042e4c0 SS |
14868 | } |
14869 | ||
197f0a60 TT |
14870 | /* Helper function for trace_pass_command. */ |
14871 | ||
14872 | static void | |
d9b3f62e | 14873 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14874 | { |
d9b3f62e | 14875 | tp->pass_count = count; |
76727919 | 14876 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14877 | if (from_tty) |
14878 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14879 | tp->number, count); |
197f0a60 TT |
14880 | } |
14881 | ||
1042e4c0 SS |
14882 | /* Set passcount for tracepoint. |
14883 | ||
14884 | First command argument is passcount, second is tracepoint number. | |
14885 | If tracepoint number omitted, apply to most recently defined. | |
14886 | Also accepts special argument "all". */ | |
14887 | ||
14888 | static void | |
0b39b52e | 14889 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14890 | { |
d9b3f62e | 14891 | struct tracepoint *t1; |
0b39b52e | 14892 | ULONGEST count; |
1042e4c0 SS |
14893 | |
14894 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14895 | error (_("passcount command requires an " |
14896 | "argument (count + optional TP num)")); | |
1042e4c0 | 14897 | |
0b39b52e | 14898 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14899 | |
529480d0 | 14900 | args = skip_spaces (args); |
1042e4c0 SS |
14901 | if (*args && strncasecmp (args, "all", 3) == 0) |
14902 | { | |
d9b3f62e PA |
14903 | struct breakpoint *b; |
14904 | ||
1042e4c0 | 14905 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14906 | if (*args) |
14907 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14908 | |
d9b3f62e | 14909 | ALL_TRACEPOINTS (b) |
197f0a60 | 14910 | { |
d9b3f62e | 14911 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14912 | trace_pass_set_count (t1, count, from_tty); |
14913 | } | |
14914 | } | |
14915 | else if (*args == '\0') | |
1042e4c0 | 14916 | { |
5fa1d40e | 14917 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14918 | if (t1) |
197f0a60 TT |
14919 | trace_pass_set_count (t1, count, from_tty); |
14920 | } | |
14921 | else | |
14922 | { | |
bfd28288 PA |
14923 | number_or_range_parser parser (args); |
14924 | while (!parser.finished ()) | |
1042e4c0 | 14925 | { |
bfd28288 | 14926 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14927 | if (t1) |
14928 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14929 | } |
14930 | } | |
1042e4c0 SS |
14931 | } |
14932 | ||
d9b3f62e | 14933 | struct tracepoint * |
1042e4c0 SS |
14934 | get_tracepoint (int num) |
14935 | { | |
14936 | struct breakpoint *t; | |
14937 | ||
14938 | ALL_TRACEPOINTS (t) | |
14939 | if (t->number == num) | |
d9b3f62e | 14940 | return (struct tracepoint *) t; |
1042e4c0 SS |
14941 | |
14942 | return NULL; | |
14943 | } | |
14944 | ||
d5551862 SS |
14945 | /* Find the tracepoint with the given target-side number (which may be |
14946 | different from the tracepoint number after disconnecting and | |
14947 | reconnecting). */ | |
14948 | ||
d9b3f62e | 14949 | struct tracepoint * |
d5551862 SS |
14950 | get_tracepoint_by_number_on_target (int num) |
14951 | { | |
d9b3f62e | 14952 | struct breakpoint *b; |
d5551862 | 14953 | |
d9b3f62e PA |
14954 | ALL_TRACEPOINTS (b) |
14955 | { | |
14956 | struct tracepoint *t = (struct tracepoint *) b; | |
14957 | ||
14958 | if (t->number_on_target == num) | |
14959 | return t; | |
14960 | } | |
d5551862 SS |
14961 | |
14962 | return NULL; | |
14963 | } | |
14964 | ||
1042e4c0 | 14965 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14966 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14967 | If the argument is missing, the most recent tracepoint |
14968 | (tracepoint_count) is returned. */ | |
14969 | ||
d9b3f62e | 14970 | struct tracepoint * |
0b39b52e | 14971 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14972 | number_or_range_parser *parser) |
1042e4c0 | 14973 | { |
1042e4c0 SS |
14974 | struct breakpoint *t; |
14975 | int tpnum; | |
0b39b52e | 14976 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14977 | |
bfd28288 | 14978 | if (parser != NULL) |
197f0a60 | 14979 | { |
bfd28288 PA |
14980 | gdb_assert (!parser->finished ()); |
14981 | tpnum = parser->get_number (); | |
197f0a60 TT |
14982 | } |
14983 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14984 | tpnum = tracepoint_count; |
1042e4c0 | 14985 | else |
197f0a60 | 14986 | tpnum = get_number (arg); |
1042e4c0 SS |
14987 | |
14988 | if (tpnum <= 0) | |
14989 | { | |
14990 | if (instring && *instring) | |
14991 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14992 | instring); | |
14993 | else | |
5fa1d40e | 14994 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14995 | return NULL; |
14996 | } | |
14997 | ||
14998 | ALL_TRACEPOINTS (t) | |
14999 | if (t->number == tpnum) | |
15000 | { | |
d9b3f62e | 15001 | return (struct tracepoint *) t; |
1042e4c0 SS |
15002 | } |
15003 | ||
1042e4c0 SS |
15004 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15005 | return NULL; | |
15006 | } | |
15007 | ||
d9b3f62e PA |
15008 | void |
15009 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15010 | { | |
15011 | if (b->thread != -1) | |
15012 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15013 | ||
15014 | if (b->task != 0) | |
15015 | fprintf_unfiltered (fp, " task %d", b->task); | |
15016 | ||
15017 | fprintf_unfiltered (fp, "\n"); | |
15018 | } | |
15019 | ||
6149aea9 PA |
15020 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15021 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15022 | on each breakpoint and only include the ones for which it returns | |
15023 | non-zero. */ | |
15024 | ||
1042e4c0 | 15025 | static void |
4495129a | 15026 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15027 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15028 | { |
15029 | struct breakpoint *tp; | |
6149aea9 | 15030 | int any = 0; |
6149aea9 | 15031 | int extra_trace_bits = 0; |
1042e4c0 | 15032 | |
6149aea9 PA |
15033 | if (filename == 0 || *filename == 0) |
15034 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15035 | |
15036 | /* See if we have anything to save. */ | |
6149aea9 | 15037 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15038 | { |
6149aea9 | 15039 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15040 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15041 | continue; |
15042 | ||
15043 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15044 | if (filter && !filter (tp)) | |
15045 | continue; | |
15046 | ||
15047 | any = 1; | |
15048 | ||
15049 | if (is_tracepoint (tp)) | |
15050 | { | |
15051 | extra_trace_bits = 1; | |
15052 | ||
15053 | /* We can stop searching. */ | |
15054 | break; | |
15055 | } | |
1042e4c0 | 15056 | } |
6149aea9 PA |
15057 | |
15058 | if (!any) | |
1042e4c0 | 15059 | { |
6149aea9 | 15060 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15061 | return; |
15062 | } | |
15063 | ||
ee0c3293 | 15064 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15065 | |
15066 | stdio_file fp; | |
15067 | ||
ee0c3293 | 15068 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15069 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15070 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15071 | |
6149aea9 | 15072 | if (extra_trace_bits) |
d7e74731 | 15073 | save_trace_state_variables (&fp); |
8bf6485c | 15074 | |
6149aea9 | 15075 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15076 | { |
6149aea9 | 15077 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15078 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15079 | continue; |
8bf6485c | 15080 | |
6149aea9 PA |
15081 | /* If we have a filter, only save the breakpoints it accepts. */ |
15082 | if (filter && !filter (tp)) | |
15083 | continue; | |
15084 | ||
d7e74731 | 15085 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15086 | |
6149aea9 PA |
15087 | /* Note, we can't rely on tp->number for anything, as we can't |
15088 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15089 | instead. */ | |
15090 | ||
15091 | if (tp->cond_string) | |
d7e74731 | 15092 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15093 | |
15094 | if (tp->ignore_count) | |
d7e74731 | 15095 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15096 | |
2d9442cc | 15097 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15098 | { |
d7e74731 | 15099 | fp.puts (" commands\n"); |
a7bdde9e | 15100 | |
d7e74731 | 15101 | current_uiout->redirect (&fp); |
492d29ea | 15102 | TRY |
1042e4c0 | 15103 | { |
d1b0a7bf | 15104 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15105 | } |
492d29ea PA |
15106 | CATCH (ex, RETURN_MASK_ALL) |
15107 | { | |
112e8700 | 15108 | current_uiout->redirect (NULL); |
492d29ea PA |
15109 | throw_exception (ex); |
15110 | } | |
15111 | END_CATCH | |
1042e4c0 | 15112 | |
112e8700 | 15113 | current_uiout->redirect (NULL); |
d7e74731 | 15114 | fp.puts (" end\n"); |
1042e4c0 | 15115 | } |
6149aea9 PA |
15116 | |
15117 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15118 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15119 | |
15120 | /* If this is a multi-location breakpoint, check if the locations | |
15121 | should be individually disabled. Watchpoint locations are | |
15122 | special, and not user visible. */ | |
15123 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15124 | { | |
15125 | struct bp_location *loc; | |
15126 | int n = 1; | |
15127 | ||
15128 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15129 | if (!loc->enabled) | |
d7e74731 | 15130 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15131 | } |
1042e4c0 | 15132 | } |
8bf6485c | 15133 | |
6149aea9 | 15134 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15135 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15136 | |
1042e4c0 | 15137 | if (from_tty) |
ee0c3293 | 15138 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15139 | } |
15140 | ||
15141 | /* The `save breakpoints' command. */ | |
15142 | ||
15143 | static void | |
4495129a | 15144 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15145 | { |
15146 | save_breakpoints (args, from_tty, NULL); | |
15147 | } | |
15148 | ||
15149 | /* The `save tracepoints' command. */ | |
15150 | ||
15151 | static void | |
4495129a | 15152 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15153 | { |
15154 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15155 | } |
15156 | ||
15157 | /* Create a vector of all tracepoints. */ | |
15158 | ||
f51e0e20 | 15159 | std::vector<breakpoint *> |
eeae04df | 15160 | all_tracepoints (void) |
1042e4c0 | 15161 | { |
f51e0e20 | 15162 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15163 | struct breakpoint *tp; |
15164 | ||
15165 | ALL_TRACEPOINTS (tp) | |
15166 | { | |
f51e0e20 | 15167 | tp_vec.push_back (tp); |
1042e4c0 SS |
15168 | } |
15169 | ||
15170 | return tp_vec; | |
15171 | } | |
15172 | ||
c906108c | 15173 | \f |
629500fa KS |
15174 | /* This help string is used to consolidate all the help string for specifying |
15175 | locations used by several commands. */ | |
15176 | ||
15177 | #define LOCATION_HELP_STRING \ | |
15178 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15179 | source filename, function name, label name, and line number.\n\ | |
15180 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15181 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15182 | \"factorial.c:fact:the_top\".\n\ | |
15183 | \n\ | |
15184 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15185 | program. Example: To specify the fourth byte past the start function\n\ | |
15186 | \"main\", use \"*main + 4\".\n\ | |
15187 | \n\ | |
15188 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15189 | syntax to specify location parameters.\n\ | |
15190 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15191 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15192 | -function fact -label the_top\".\n\ |
15193 | \n\ | |
15194 | By default, a specified function is matched against the program's\n\ | |
15195 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15196 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15197 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15198 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15199 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15200 | |
4a64f543 MS |
15201 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15202 | commands. It is defined as a macro to prevent duplication. | |
15203 | COMMAND should be a string constant containing the name of the | |
15204 | command. */ | |
629500fa | 15205 | |
31e2b00f | 15206 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15207 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15208 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15209 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15210 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15211 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15212 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15213 | below.\n\ | |
15214 | \n\ | |
dc10affe PA |
15215 | With no LOCATION, uses current execution address of the selected\n\ |
15216 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15217 | \n\ |
15218 | THREADNUM is the number from \"info threads\".\n\ | |
15219 | CONDITION is a boolean expression.\n\ | |
629500fa | 15220 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15221 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15222 | conditions are different.\n\ | |
31e2b00f AS |
15223 | \n\ |
15224 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15225 | ||
44feb3ce TT |
15226 | /* List of subcommands for "catch". */ |
15227 | static struct cmd_list_element *catch_cmdlist; | |
15228 | ||
15229 | /* List of subcommands for "tcatch". */ | |
15230 | static struct cmd_list_element *tcatch_cmdlist; | |
15231 | ||
9ac4176b | 15232 | void |
a121b7c1 | 15233 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15234 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15235 | completer_ftype *completer, |
44feb3ce TT |
15236 | void *user_data_catch, |
15237 | void *user_data_tcatch) | |
15238 | { | |
15239 | struct cmd_list_element *command; | |
15240 | ||
0450cc4c | 15241 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15242 | &catch_cmdlist); |
15243 | set_cmd_sfunc (command, sfunc); | |
15244 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15245 | set_cmd_completer (command, completer); |
44feb3ce | 15246 | |
0450cc4c | 15247 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15248 | &tcatch_cmdlist); |
15249 | set_cmd_sfunc (command, sfunc); | |
15250 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15251 | set_cmd_completer (command, completer); |
44feb3ce TT |
15252 | } |
15253 | ||
6149aea9 | 15254 | static void |
981a3fb3 | 15255 | save_command (const char *arg, int from_tty) |
6149aea9 | 15256 | { |
3e43a32a MS |
15257 | printf_unfiltered (_("\"save\" must be followed by " |
15258 | "the name of a save subcommand.\n")); | |
635c7e8a | 15259 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15260 | } |
15261 | ||
84f4c1fe PM |
15262 | struct breakpoint * |
15263 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15264 | void *data) | |
15265 | { | |
35df4500 | 15266 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15267 | |
35df4500 | 15268 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15269 | { |
15270 | if ((*callback) (b, data)) | |
15271 | return b; | |
15272 | } | |
15273 | ||
15274 | return NULL; | |
15275 | } | |
15276 | ||
0574c78f GB |
15277 | /* Zero if any of the breakpoint's locations could be a location where |
15278 | functions have been inlined, nonzero otherwise. */ | |
15279 | ||
15280 | static int | |
15281 | is_non_inline_function (struct breakpoint *b) | |
15282 | { | |
15283 | /* The shared library event breakpoint is set on the address of a | |
15284 | non-inline function. */ | |
15285 | if (b->type == bp_shlib_event) | |
15286 | return 1; | |
15287 | ||
15288 | return 0; | |
15289 | } | |
15290 | ||
15291 | /* Nonzero if the specified PC cannot be a location where functions | |
15292 | have been inlined. */ | |
15293 | ||
15294 | int | |
accd0bcd | 15295 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15296 | const struct target_waitstatus *ws) |
0574c78f GB |
15297 | { |
15298 | struct breakpoint *b; | |
15299 | struct bp_location *bl; | |
15300 | ||
15301 | ALL_BREAKPOINTS (b) | |
15302 | { | |
15303 | if (!is_non_inline_function (b)) | |
15304 | continue; | |
15305 | ||
15306 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15307 | { | |
15308 | if (!bl->shlib_disabled | |
09ac7c10 | 15309 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15310 | return 1; |
15311 | } | |
15312 | } | |
15313 | ||
15314 | return 0; | |
15315 | } | |
15316 | ||
2f202fde JK |
15317 | /* Remove any references to OBJFILE which is going to be freed. */ |
15318 | ||
15319 | void | |
15320 | breakpoint_free_objfile (struct objfile *objfile) | |
15321 | { | |
15322 | struct bp_location **locp, *loc; | |
15323 | ||
15324 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15325 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15326 | loc->symtab = NULL; |
15327 | } | |
15328 | ||
2060206e PA |
15329 | void |
15330 | initialize_breakpoint_ops (void) | |
15331 | { | |
15332 | static int initialized = 0; | |
15333 | ||
15334 | struct breakpoint_ops *ops; | |
15335 | ||
15336 | if (initialized) | |
15337 | return; | |
15338 | initialized = 1; | |
15339 | ||
15340 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15341 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15342 | internal and momentary breakpoints, etc.). */ | |
15343 | ops = &bkpt_base_breakpoint_ops; | |
15344 | *ops = base_breakpoint_ops; | |
15345 | ops->re_set = bkpt_re_set; | |
15346 | ops->insert_location = bkpt_insert_location; | |
15347 | ops->remove_location = bkpt_remove_location; | |
15348 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15349 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15350 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15351 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15352 | |
15353 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15354 | ops = &bkpt_breakpoint_ops; | |
15355 | *ops = bkpt_base_breakpoint_ops; | |
15356 | ops->re_set = bkpt_re_set; | |
15357 | ops->resources_needed = bkpt_resources_needed; | |
15358 | ops->print_it = bkpt_print_it; | |
15359 | ops->print_mention = bkpt_print_mention; | |
15360 | ops->print_recreate = bkpt_print_recreate; | |
15361 | ||
15362 | /* Ranged breakpoints. */ | |
15363 | ops = &ranged_breakpoint_ops; | |
15364 | *ops = bkpt_breakpoint_ops; | |
15365 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15366 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15367 | ops->print_it = print_it_ranged_breakpoint; | |
15368 | ops->print_one = print_one_ranged_breakpoint; | |
15369 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15370 | ops->print_mention = print_mention_ranged_breakpoint; | |
15371 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15372 | ||
15373 | /* Internal breakpoints. */ | |
15374 | ops = &internal_breakpoint_ops; | |
15375 | *ops = bkpt_base_breakpoint_ops; | |
15376 | ops->re_set = internal_bkpt_re_set; | |
15377 | ops->check_status = internal_bkpt_check_status; | |
15378 | ops->print_it = internal_bkpt_print_it; | |
15379 | ops->print_mention = internal_bkpt_print_mention; | |
15380 | ||
15381 | /* Momentary breakpoints. */ | |
15382 | ops = &momentary_breakpoint_ops; | |
15383 | *ops = bkpt_base_breakpoint_ops; | |
15384 | ops->re_set = momentary_bkpt_re_set; | |
15385 | ops->check_status = momentary_bkpt_check_status; | |
15386 | ops->print_it = momentary_bkpt_print_it; | |
15387 | ops->print_mention = momentary_bkpt_print_mention; | |
15388 | ||
55aa24fb SDJ |
15389 | /* Probe breakpoints. */ |
15390 | ops = &bkpt_probe_breakpoint_ops; | |
15391 | *ops = bkpt_breakpoint_ops; | |
15392 | ops->insert_location = bkpt_probe_insert_location; | |
15393 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15394 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15395 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15396 | |
2060206e PA |
15397 | /* Watchpoints. */ |
15398 | ops = &watchpoint_breakpoint_ops; | |
15399 | *ops = base_breakpoint_ops; | |
15400 | ops->re_set = re_set_watchpoint; | |
15401 | ops->insert_location = insert_watchpoint; | |
15402 | ops->remove_location = remove_watchpoint; | |
15403 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15404 | ops->check_status = check_status_watchpoint; | |
15405 | ops->resources_needed = resources_needed_watchpoint; | |
15406 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15407 | ops->print_it = print_it_watchpoint; | |
15408 | ops->print_mention = print_mention_watchpoint; | |
15409 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15410 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15411 | |
15412 | /* Masked watchpoints. */ | |
15413 | ops = &masked_watchpoint_breakpoint_ops; | |
15414 | *ops = watchpoint_breakpoint_ops; | |
15415 | ops->insert_location = insert_masked_watchpoint; | |
15416 | ops->remove_location = remove_masked_watchpoint; | |
15417 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15418 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15419 | ops->print_it = print_it_masked_watchpoint; | |
15420 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15421 | ops->print_mention = print_mention_masked_watchpoint; | |
15422 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15423 | ||
15424 | /* Tracepoints. */ | |
15425 | ops = &tracepoint_breakpoint_ops; | |
15426 | *ops = base_breakpoint_ops; | |
15427 | ops->re_set = tracepoint_re_set; | |
15428 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15429 | ops->print_one_detail = tracepoint_print_one_detail; | |
15430 | ops->print_mention = tracepoint_print_mention; | |
15431 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15432 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15433 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15434 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15435 | |
55aa24fb SDJ |
15436 | /* Probe tracepoints. */ |
15437 | ops = &tracepoint_probe_breakpoint_ops; | |
15438 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15439 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15440 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15441 | |
983af33b SDJ |
15442 | /* Static tracepoints with marker (`-m'). */ |
15443 | ops = &strace_marker_breakpoint_ops; | |
15444 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15445 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15446 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15447 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15448 | |
15449 | /* Fork catchpoints. */ | |
15450 | ops = &catch_fork_breakpoint_ops; | |
15451 | *ops = base_breakpoint_ops; | |
15452 | ops->insert_location = insert_catch_fork; | |
15453 | ops->remove_location = remove_catch_fork; | |
15454 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15455 | ops->print_it = print_it_catch_fork; | |
15456 | ops->print_one = print_one_catch_fork; | |
15457 | ops->print_mention = print_mention_catch_fork; | |
15458 | ops->print_recreate = print_recreate_catch_fork; | |
15459 | ||
15460 | /* Vfork catchpoints. */ | |
15461 | ops = &catch_vfork_breakpoint_ops; | |
15462 | *ops = base_breakpoint_ops; | |
15463 | ops->insert_location = insert_catch_vfork; | |
15464 | ops->remove_location = remove_catch_vfork; | |
15465 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15466 | ops->print_it = print_it_catch_vfork; | |
15467 | ops->print_one = print_one_catch_vfork; | |
15468 | ops->print_mention = print_mention_catch_vfork; | |
15469 | ops->print_recreate = print_recreate_catch_vfork; | |
15470 | ||
15471 | /* Exec catchpoints. */ | |
15472 | ops = &catch_exec_breakpoint_ops; | |
15473 | *ops = base_breakpoint_ops; | |
2060206e PA |
15474 | ops->insert_location = insert_catch_exec; |
15475 | ops->remove_location = remove_catch_exec; | |
15476 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15477 | ops->print_it = print_it_catch_exec; | |
15478 | ops->print_one = print_one_catch_exec; | |
15479 | ops->print_mention = print_mention_catch_exec; | |
15480 | ops->print_recreate = print_recreate_catch_exec; | |
15481 | ||
edcc5120 TT |
15482 | /* Solib-related catchpoints. */ |
15483 | ops = &catch_solib_breakpoint_ops; | |
15484 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15485 | ops->insert_location = insert_catch_solib; |
15486 | ops->remove_location = remove_catch_solib; | |
15487 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15488 | ops->check_status = check_status_catch_solib; | |
15489 | ops->print_it = print_it_catch_solib; | |
15490 | ops->print_one = print_one_catch_solib; | |
15491 | ops->print_mention = print_mention_catch_solib; | |
15492 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15493 | |
15494 | ops = &dprintf_breakpoint_ops; | |
15495 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15496 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15497 | ops->resources_needed = bkpt_resources_needed; |
15498 | ops->print_it = bkpt_print_it; | |
15499 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15500 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15501 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15502 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15503 | } |
15504 | ||
8bfd80db YQ |
15505 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15506 | ||
15507 | static struct cmd_list_element *enablebreaklist = NULL; | |
15508 | ||
8588b356 SM |
15509 | /* See breakpoint.h. */ |
15510 | ||
15511 | cmd_list_element *commands_cmd_element = nullptr; | |
15512 | ||
c906108c | 15513 | void |
fba45db2 | 15514 | _initialize_breakpoint (void) |
c906108c SS |
15515 | { |
15516 | struct cmd_list_element *c; | |
15517 | ||
2060206e PA |
15518 | initialize_breakpoint_ops (); |
15519 | ||
76727919 TT |
15520 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15521 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15522 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15523 | |
55aa24fb | 15524 | breakpoint_objfile_key |
43dce439 | 15525 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15526 | |
c906108c SS |
15527 | breakpoint_chain = 0; |
15528 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15529 | before a breakpoint is set. */ | |
15530 | breakpoint_count = 0; | |
15531 | ||
1042e4c0 SS |
15532 | tracepoint_count = 0; |
15533 | ||
1bedd215 AC |
15534 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15535 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15536 | Usage is `ignore N COUNT'.")); | |
c906108c | 15537 | |
8588b356 SM |
15538 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15539 | commands_command, _("\ | |
18da0c51 MG |
15540 | Set commands to be executed when the given breakpoints are hit.\n\ |
15541 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15542 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15543 | (e.g. `5-7').\n\ | |
c906108c SS |
15544 | With no argument, the targeted breakpoint is the last one set.\n\ |
15545 | The commands themselves follow starting on the next line.\n\ | |
15546 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15547 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15548 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15549 | |
d55637df | 15550 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15551 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15552 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15553 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15554 | set_cmd_completer (c, condition_completer); |
c906108c | 15555 | |
1bedd215 | 15556 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15557 | Set a temporary breakpoint.\n\ |
c906108c SS |
15558 | Like \"break\" except the breakpoint is only temporary,\n\ |
15559 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15560 | by using \"enable delete\" on the breakpoint number.\n\ |
15561 | \n" | |
15562 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15563 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15564 | |
1bedd215 | 15565 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15566 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15567 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15568 | some target hardware may not have this support.\n\ |
15569 | \n" | |
15570 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15571 | set_cmd_completer (c, location_completer); |
c906108c | 15572 | |
1bedd215 | 15573 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15574 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15575 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15576 | so it will be deleted when hit.\n\ |
15577 | \n" | |
15578 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15579 | set_cmd_completer (c, location_completer); |
c906108c | 15580 | |
1bedd215 AC |
15581 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15582 | Enable some breakpoints.\n\ | |
c906108c SS |
15583 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15584 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15585 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15586 | With a subcommand you can enable temporarily."), |
c906108c | 15587 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15588 | |
15589 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15590 | ||
84951ab5 | 15591 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15592 | Enable some breakpoints.\n\ |
c906108c SS |
15593 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15594 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15595 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15596 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15597 | |
1a966eab AC |
15598 | add_cmd ("once", no_class, enable_once_command, _("\ |
15599 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15600 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15601 | &enablebreaklist); |
15602 | ||
1a966eab AC |
15603 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15604 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15605 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15606 | &enablebreaklist); |
15607 | ||
816338b5 SS |
15608 | add_cmd ("count", no_class, enable_count_command, _("\ |
15609 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15610 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15611 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15612 | &enablebreaklist); | |
15613 | ||
1a966eab AC |
15614 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15615 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15616 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15617 | &enablelist); |
15618 | ||
1a966eab AC |
15619 | add_cmd ("once", no_class, enable_once_command, _("\ |
15620 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15621 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15622 | &enablelist); |
15623 | ||
15624 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15625 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15626 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15627 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15628 | &enablelist); |
15629 | ||
1bedd215 AC |
15630 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15631 | Disable some breakpoints.\n\ | |
c906108c SS |
15632 | Arguments are breakpoint numbers with spaces in between.\n\ |
15633 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15634 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15635 | &disablelist, "disable ", 1, &cmdlist); |
15636 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15637 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15638 | |
1a966eab AC |
15639 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15640 | Disable some breakpoints.\n\ | |
c906108c SS |
15641 | Arguments are breakpoint numbers with spaces in between.\n\ |
15642 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15643 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15644 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15645 | &disablelist); |
15646 | ||
1bedd215 AC |
15647 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15648 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15649 | Arguments are breakpoint numbers with spaces in between.\n\ |
15650 | To delete all breakpoints, give no argument.\n\ | |
15651 | \n\ | |
15652 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15653 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15654 | &deletelist, "delete ", 1, &cmdlist); |
15655 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15656 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15657 | |
1a966eab AC |
15658 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15659 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15660 | Arguments are breakpoint numbers with spaces in between.\n\ |
15661 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15662 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15663 | &deletelist); |
15664 | ||
1bedd215 | 15665 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15666 | Clear breakpoint at specified location.\n\ |
15667 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15668 | \n\ |
15669 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15670 | is executing in.\n" |
15671 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15672 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15673 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15674 | |
1bedd215 | 15675 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15676 | Set breakpoint at specified location.\n" |
31e2b00f | 15677 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15678 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15679 | |
c906108c SS |
15680 | add_com_alias ("b", "break", class_run, 1); |
15681 | add_com_alias ("br", "break", class_run, 1); | |
15682 | add_com_alias ("bre", "break", class_run, 1); | |
15683 | add_com_alias ("brea", "break", class_run, 1); | |
15684 | ||
c906108c SS |
15685 | if (dbx_commands) |
15686 | { | |
1bedd215 AC |
15687 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15688 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15689 | &stoplist, "stop ", 1, &cmdlist); |
15690 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15691 | _("Break in function or address."), &stoplist); |
c5aa993b | 15692 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15693 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15694 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15695 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15696 | The \"Type\" column indicates one of:\n\ |
15697 | \tbreakpoint - normal breakpoint\n\ | |
15698 | \twatchpoint - watchpoint\n\ | |
15699 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15700 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15701 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15702 | address and file/line number respectively.\n\ |
15703 | \n\ | |
15704 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15705 | are set to the address of the last breakpoint listed unless the command\n\ |
15706 | is prefixed with \"server \".\n\n\ | |
c906108c | 15707 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15708 | breakpoint set.")); |
c906108c SS |
15709 | } |
15710 | ||
11db9430 | 15711 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15712 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15713 | The \"Type\" column indicates one of:\n\ |
15714 | \tbreakpoint - normal breakpoint\n\ | |
15715 | \twatchpoint - watchpoint\n\ | |
15716 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15717 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15718 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15719 | address and file/line number respectively.\n\ |
15720 | \n\ | |
15721 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15722 | are set to the address of the last breakpoint listed unless the command\n\ |
15723 | is prefixed with \"server \".\n\n\ | |
c906108c | 15724 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15725 | breakpoint set.")); |
c906108c | 15726 | |
6b04bdb7 MS |
15727 | add_info_alias ("b", "breakpoints", 1); |
15728 | ||
1a966eab AC |
15729 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15730 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15731 | The \"Type\" column indicates one of:\n\ |
15732 | \tbreakpoint - normal breakpoint\n\ | |
15733 | \twatchpoint - watchpoint\n\ | |
15734 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15735 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15736 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15737 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15738 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15739 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15740 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15741 | address and file/line number respectively.\n\ |
15742 | \n\ | |
15743 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15744 | are set to the address of the last breakpoint listed unless the command\n\ |
15745 | is prefixed with \"server \".\n\n\ | |
c906108c | 15746 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15747 | breakpoint set."), |
c906108c SS |
15748 | &maintenanceinfolist); |
15749 | ||
44feb3ce TT |
15750 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15751 | Set catchpoints to catch events."), | |
15752 | &catch_cmdlist, "catch ", | |
15753 | 0/*allow-unknown*/, &cmdlist); | |
15754 | ||
15755 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15756 | Set temporary catchpoints to catch events."), | |
15757 | &tcatch_cmdlist, "tcatch ", | |
15758 | 0/*allow-unknown*/, &cmdlist); | |
15759 | ||
44feb3ce TT |
15760 | add_catch_command ("fork", _("Catch calls to fork."), |
15761 | catch_fork_command_1, | |
a96d9b2e | 15762 | NULL, |
44feb3ce TT |
15763 | (void *) (uintptr_t) catch_fork_permanent, |
15764 | (void *) (uintptr_t) catch_fork_temporary); | |
15765 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15766 | catch_fork_command_1, | |
a96d9b2e | 15767 | NULL, |
44feb3ce TT |
15768 | (void *) (uintptr_t) catch_vfork_permanent, |
15769 | (void *) (uintptr_t) catch_vfork_temporary); | |
15770 | add_catch_command ("exec", _("Catch calls to exec."), | |
15771 | catch_exec_command_1, | |
a96d9b2e SDJ |
15772 | NULL, |
15773 | CATCH_PERMANENT, | |
15774 | CATCH_TEMPORARY); | |
edcc5120 TT |
15775 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15776 | Usage: catch load [REGEX]\n\ | |
15777 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15778 | catch_load_command_1, | |
15779 | NULL, | |
15780 | CATCH_PERMANENT, | |
15781 | CATCH_TEMPORARY); | |
15782 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15783 | Usage: catch unload [REGEX]\n\ | |
15784 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15785 | catch_unload_command_1, | |
15786 | NULL, | |
15787 | CATCH_PERMANENT, | |
15788 | CATCH_TEMPORARY); | |
c5aa993b | 15789 | |
1bedd215 AC |
15790 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15791 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15792 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15793 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15794 | an expression changes.\n\ |
15795 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15796 | the memory to which it refers.")); | |
65d12d83 | 15797 | set_cmd_completer (c, expression_completer); |
c906108c | 15798 | |
1bedd215 AC |
15799 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15800 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15801 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15802 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15803 | an expression is read.\n\ |
15804 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15805 | the memory to which it refers.")); | |
65d12d83 | 15806 | set_cmd_completer (c, expression_completer); |
c906108c | 15807 | |
1bedd215 AC |
15808 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15809 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15810 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15811 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15812 | an expression is either read or written.\n\ |
15813 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15814 | the memory to which it refers.")); | |
65d12d83 | 15815 | set_cmd_completer (c, expression_completer); |
c906108c | 15816 | |
11db9430 | 15817 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15818 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15819 | |
920d2a44 AC |
15820 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15821 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15822 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15823 | &can_use_hw_watchpoints, _("\ | |
15824 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15825 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15826 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15827 | such is available. (However, any hardware watchpoints that were\n\ | |
15828 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15829 | hardware.)"), |
15830 | NULL, | |
920d2a44 | 15831 | show_can_use_hw_watchpoints, |
85c07804 | 15832 | &setlist, &showlist); |
c906108c SS |
15833 | |
15834 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15835 | |
1042e4c0 SS |
15836 | /* Tracepoint manipulation commands. */ |
15837 | ||
15838 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15839 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15840 | \n" |
15841 | BREAK_ARGS_HELP ("trace") "\n\ | |
15842 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15843 | set_cmd_completer (c, location_completer); | |
15844 | ||
15845 | add_com_alias ("tp", "trace", class_alias, 0); | |
15846 | add_com_alias ("tr", "trace", class_alias, 1); | |
15847 | add_com_alias ("tra", "trace", class_alias, 1); | |
15848 | add_com_alias ("trac", "trace", class_alias, 1); | |
15849 | ||
7a697b8d | 15850 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15851 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15852 | \n" |
15853 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15854 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15855 | set_cmd_completer (c, location_completer); | |
15856 | ||
0fb4aa4b | 15857 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15858 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15859 | \n\ |
15860 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15861 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15862 | or -m MARKER_ID.\n\n\ | |
15863 | If a marker id is specified, probe the marker with that name. With\n\ | |
15864 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15865 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15866 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15867 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15868 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15869 | \n\ | |
15870 | CONDITION is a boolean expression.\n\ | |
629500fa | 15871 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15872 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15873 | conditions are different.\n\ | |
0fb4aa4b PA |
15874 | \n\ |
15875 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15876 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15877 | set_cmd_completer (c, location_completer); | |
15878 | ||
11db9430 | 15879 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15880 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15881 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15882 | last tracepoint set.")); | |
15883 | ||
15884 | add_info_alias ("tp", "tracepoints", 1); | |
15885 | ||
15886 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15887 | Delete specified tracepoints.\n\ | |
15888 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15889 | No argument means delete all tracepoints."), | |
15890 | &deletelist); | |
7e20dfcd | 15891 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15892 | |
15893 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15894 | Disable specified tracepoints.\n\ | |
15895 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15896 | No argument means disable all tracepoints."), | |
15897 | &disablelist); | |
15898 | deprecate_cmd (c, "disable"); | |
15899 | ||
15900 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15901 | Enable specified tracepoints.\n\ | |
15902 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15903 | No argument means enable all tracepoints."), | |
15904 | &enablelist); | |
15905 | deprecate_cmd (c, "enable"); | |
15906 | ||
15907 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15908 | Set the passcount for a tracepoint.\n\ | |
15909 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15910 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15911 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15912 | ||
6149aea9 PA |
15913 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15914 | _("Save breakpoint definitions as a script."), | |
15915 | &save_cmdlist, "save ", | |
15916 | 0/*allow-unknown*/, &cmdlist); | |
15917 | ||
15918 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15919 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15920 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15921 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15922 | session to restore them."), | |
15923 | &save_cmdlist); | |
15924 | set_cmd_completer (c, filename_completer); | |
15925 | ||
15926 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15927 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15928 | Use the 'source' command in another debug session to restore them."), |
15929 | &save_cmdlist); | |
1042e4c0 SS |
15930 | set_cmd_completer (c, filename_completer); |
15931 | ||
6149aea9 PA |
15932 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15933 | deprecate_cmd (c, "save tracepoints"); | |
15934 | ||
1bedd215 | 15935 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15936 | Breakpoint specific settings\n\ |
15937 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15938 | pending breakpoint behavior"), |
fa8d40ab JJ |
15939 | &breakpoint_set_cmdlist, "set breakpoint ", |
15940 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15941 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15942 | Breakpoint specific settings\n\ |
15943 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15944 | pending breakpoint behavior"), |
fa8d40ab JJ |
15945 | &breakpoint_show_cmdlist, "show breakpoint ", |
15946 | 0/*allow-unknown*/, &showlist); | |
15947 | ||
7915a72c AC |
15948 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15949 | &pending_break_support, _("\ | |
15950 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15951 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15952 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15953 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15954 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15955 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15956 | NULL, |
920d2a44 | 15957 | show_pending_break_support, |
6e1d7d6c AC |
15958 | &breakpoint_set_cmdlist, |
15959 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15960 | |
15961 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15962 | |
15963 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15964 | &automatic_hardware_breakpoints, _("\ | |
15965 | Set automatic usage of hardware breakpoints."), _("\ | |
15966 | Show automatic usage of hardware breakpoints."), _("\ | |
15967 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15968 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15969 | a warning will be emitted for such breakpoints."), | |
15970 | NULL, | |
15971 | show_automatic_hardware_breakpoints, | |
15972 | &breakpoint_set_cmdlist, | |
15973 | &breakpoint_show_cmdlist); | |
74960c60 | 15974 | |
a25a5a45 PA |
15975 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15976 | &always_inserted_mode, _("\ | |
74960c60 VP |
15977 | Set mode for inserting breakpoints."), _("\ |
15978 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15979 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15980 | they're created, kept inserted even when execution stops, and removed\n\ | |
15981 | only when the user deletes them. When this mode is off (the default),\n\ | |
15982 | breakpoints are inserted only when execution continues, and removed\n\ | |
15983 | when execution stops."), | |
72d0e2c5 YQ |
15984 | NULL, |
15985 | &show_always_inserted_mode, | |
15986 | &breakpoint_set_cmdlist, | |
15987 | &breakpoint_show_cmdlist); | |
f1310107 | 15988 | |
b775012e LM |
15989 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15990 | condition_evaluation_enums, | |
15991 | &condition_evaluation_mode_1, _("\ | |
15992 | Set mode of breakpoint condition evaluation."), _("\ | |
15993 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15994 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15995 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15996 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15997 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15998 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15999 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16000 | be set to \"gdb\""), | |
16001 | &set_condition_evaluation_mode, | |
16002 | &show_condition_evaluation_mode, | |
16003 | &breakpoint_set_cmdlist, | |
16004 | &breakpoint_show_cmdlist); | |
16005 | ||
f1310107 TJB |
16006 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16007 | Set a breakpoint for an address range.\n\ | |
16008 | break-range START-LOCATION, END-LOCATION\n\ | |
16009 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16010 | LINENUM, for that line in the current file,\n\ | |
16011 | FILE:LINENUM, for that line in that file,\n\ | |
16012 | +OFFSET, for that number of lines after the current line\n\ | |
16013 | or the start of the range\n\ | |
16014 | FUNCTION, for the first line in that function,\n\ | |
16015 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16016 | *ADDRESS, for the instruction at that address.\n\ | |
16017 | \n\ | |
16018 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16019 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16020 | range (including START-LOCATION and END-LOCATION).")); | |
16021 | ||
e7e0cddf | 16022 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16023 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16024 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16025 | location may be a linespec, explicit, or address location.\n" |
16026 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16027 | set_cmd_completer (c, location_completer); |
16028 | ||
16029 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16030 | dprintf_style_enums, &dprintf_style, _("\ | |
16031 | Set the style of usage for dynamic printf."), _("\ | |
16032 | Show the style of usage for dynamic printf."), _("\ | |
16033 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16034 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16035 | console, as with the \"printf\" command.\n\ | |
16036 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16037 | program; by default printf(), but you can choose a different function or\n\ | |
16038 | output stream by setting dprintf-function and dprintf-channel."), | |
16039 | update_dprintf_commands, NULL, | |
16040 | &setlist, &showlist); | |
16041 | ||
16042 | dprintf_function = xstrdup ("printf"); | |
16043 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16044 | &dprintf_function, _("\ | |
16045 | Set the function to use for dynamic printf"), _("\ | |
16046 | Show the function to use for dynamic printf"), NULL, | |
16047 | update_dprintf_commands, NULL, | |
16048 | &setlist, &showlist); | |
16049 | ||
16050 | dprintf_channel = xstrdup (""); | |
16051 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16052 | &dprintf_channel, _("\ | |
16053 | Set the channel to use for dynamic printf"), _("\ | |
16054 | Show the channel to use for dynamic printf"), NULL, | |
16055 | update_dprintf_commands, NULL, | |
16056 | &setlist, &showlist); | |
16057 | ||
d3ce09f5 SS |
16058 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16059 | &disconnected_dprintf, _("\ | |
16060 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16061 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16062 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16063 | even if GDB disconnects or detaches from the target."), | |
16064 | NULL, | |
16065 | NULL, | |
16066 | &setlist, &showlist); | |
16067 | ||
16068 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16069 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16070 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16071 | ||
765dc015 | 16072 | automatic_hardware_breakpoints = 1; |
f3b1572e | 16073 | |
76727919 TT |
16074 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16075 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16076 | } |