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" |
0747795c | 68 | #include "common/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 | { |
af02033e | 3206 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3207 | |
2030c079 | 3208 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3209 | { |
3210 | struct breakpoint *b; | |
17450429 PP |
3211 | struct breakpoint_objfile_data *bp_objfile_data; |
3212 | CORE_ADDR addr; | |
67994074 | 3213 | struct explicit_location explicit_loc; |
69de3c6a | 3214 | |
17450429 PP |
3215 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3216 | ||
3b7344d5 | 3217 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3218 | continue; |
3219 | ||
3b7344d5 | 3220 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3221 | { |
3b7344d5 | 3222 | struct bound_minimal_symbol m; |
17450429 PP |
3223 | |
3224 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3225 | if (m.minsym == NULL) |
17450429 PP |
3226 | { |
3227 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3228 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3229 | continue; |
3230 | } | |
3231 | bp_objfile_data->overlay_msym = m; | |
3232 | } | |
e62c965a | 3233 | |
77e371c0 | 3234 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3235 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3236 | bp_overlay_event, |
3237 | &internal_breakpoint_ops); | |
67994074 KS |
3238 | initialize_explicit_location (&explicit_loc); |
3239 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3240 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3241 | |
69de3c6a PP |
3242 | if (overlay_debugging == ovly_auto) |
3243 | { | |
3244 | b->enable_state = bp_enabled; | |
3245 | overlay_events_enabled = 1; | |
3246 | } | |
3247 | else | |
3248 | { | |
3249 | b->enable_state = bp_disabled; | |
3250 | overlay_events_enabled = 0; | |
3251 | } | |
e62c965a | 3252 | } |
e62c965a PP |
3253 | } |
3254 | ||
0fd8e87f | 3255 | static void |
af02033e | 3256 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3257 | { |
6c95b8df | 3258 | struct program_space *pspace; |
6c95b8df | 3259 | |
5ed8105e | 3260 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3261 | |
6c95b8df | 3262 | ALL_PSPACES (pspace) |
af02033e | 3263 | { |
af02033e PP |
3264 | set_current_program_space (pspace); |
3265 | ||
2030c079 | 3266 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3267 | { |
3268 | int i; | |
3269 | struct gdbarch *gdbarch; | |
3270 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3271 | |
aed57c53 | 3272 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3273 | |
aed57c53 | 3274 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3275 | |
aed57c53 TT |
3276 | if (!bp_objfile_data->longjmp_searched) |
3277 | { | |
3278 | std::vector<probe *> ret | |
3279 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3280 | |
aed57c53 TT |
3281 | if (!ret.empty ()) |
3282 | { | |
3283 | /* We are only interested in checking one element. */ | |
3284 | probe *p = ret[0]; | |
3285 | ||
3286 | if (!p->can_evaluate_arguments ()) | |
3287 | { | |
3288 | /* We cannot use the probe interface here, because it does | |
3289 | not know how to evaluate arguments. */ | |
3290 | ret.clear (); | |
3291 | } | |
3292 | } | |
3293 | bp_objfile_data->longjmp_probes = ret; | |
3294 | bp_objfile_data->longjmp_searched = 1; | |
3295 | } | |
25f9533e | 3296 | |
aed57c53 TT |
3297 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3298 | { | |
3299 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3300 | { | |
3301 | struct breakpoint *b; | |
3302 | ||
3303 | b = create_internal_breakpoint (gdbarch, | |
3304 | p->get_relocated_address (objfile), | |
3305 | bp_longjmp_master, | |
3306 | &internal_breakpoint_ops); | |
3307 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3308 | b->enable_state = bp_disabled; | |
3309 | } | |
28106bc2 | 3310 | |
aed57c53 TT |
3311 | continue; |
3312 | } | |
28106bc2 | 3313 | |
aed57c53 | 3314 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
28106bc2 | 3315 | continue; |
28106bc2 | 3316 | |
aed57c53 TT |
3317 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3318 | { | |
3319 | struct breakpoint *b; | |
3320 | const char *func_name; | |
3321 | CORE_ADDR addr; | |
3322 | struct explicit_location explicit_loc; | |
0fd8e87f | 3323 | |
aed57c53 TT |
3324 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3325 | continue; | |
17450429 | 3326 | |
aed57c53 TT |
3327 | func_name = longjmp_names[i]; |
3328 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3329 | { | |
3330 | struct bound_minimal_symbol m; | |
3331 | ||
3332 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3333 | if (m.minsym == NULL) | |
3334 | { | |
3335 | /* Prevent future lookups in this objfile. */ | |
3336 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3337 | continue; | |
3338 | } | |
3339 | bp_objfile_data->longjmp_msym[i] = m; | |
3340 | } | |
17450429 | 3341 | |
aed57c53 TT |
3342 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3343 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3344 | &internal_breakpoint_ops); | |
3345 | initialize_explicit_location (&explicit_loc); | |
3346 | explicit_loc.function_name = ASTRDUP (func_name); | |
3347 | b->location = new_explicit_location (&explicit_loc); | |
3348 | b->enable_state = bp_disabled; | |
3349 | } | |
3350 | } | |
af02033e | 3351 | } |
0fd8e87f UW |
3352 | } |
3353 | ||
af02033e | 3354 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3355 | static void |
af02033e | 3356 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3357 | { |
3358 | struct program_space *pspace; | |
af02033e | 3359 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3360 | |
5ed8105e | 3361 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3362 | |
3363 | ALL_PSPACES (pspace) | |
17450429 | 3364 | { |
17450429 PP |
3365 | CORE_ADDR addr; |
3366 | ||
3367 | set_current_program_space (pspace); | |
3368 | ||
2030c079 | 3369 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3370 | { |
3371 | struct breakpoint *b; | |
3372 | struct breakpoint_objfile_data *bp_objfile_data; | |
3373 | struct explicit_location explicit_loc; | |
aa7d318d | 3374 | |
aed57c53 | 3375 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3376 | |
aed57c53 TT |
3377 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3378 | continue; | |
17450429 | 3379 | |
aed57c53 TT |
3380 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3381 | { | |
3382 | struct bound_minimal_symbol m; | |
17450429 | 3383 | |
aed57c53 TT |
3384 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3385 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3386 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3387 | { | |
3388 | /* Prevent future lookups in this objfile. */ | |
3389 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3390 | continue; | |
3391 | } | |
3392 | bp_objfile_data->terminate_msym = m; | |
3393 | } | |
aa7d318d | 3394 | |
aed57c53 TT |
3395 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3396 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
3397 | bp_std_terminate_master, | |
3398 | &internal_breakpoint_ops); | |
3399 | initialize_explicit_location (&explicit_loc); | |
3400 | explicit_loc.function_name = ASTRDUP (func_name); | |
3401 | b->location = new_explicit_location (&explicit_loc); | |
3402 | b->enable_state = bp_disabled; | |
3403 | } | |
17450429 | 3404 | } |
aa7d318d TT |
3405 | } |
3406 | ||
186c406b TT |
3407 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3408 | ||
70221824 | 3409 | static void |
186c406b TT |
3410 | create_exception_master_breakpoint (void) |
3411 | { | |
17450429 | 3412 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3413 | |
2030c079 | 3414 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3415 | { |
17450429 PP |
3416 | struct breakpoint *b; |
3417 | struct gdbarch *gdbarch; | |
3418 | struct breakpoint_objfile_data *bp_objfile_data; | |
3419 | CORE_ADDR addr; | |
67994074 | 3420 | struct explicit_location explicit_loc; |
17450429 PP |
3421 | |
3422 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3423 | ||
28106bc2 SDJ |
3424 | /* We prefer the SystemTap probe point if it exists. */ |
3425 | if (!bp_objfile_data->exception_searched) | |
3426 | { | |
45461e0d SM |
3427 | std::vector<probe *> ret |
3428 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3429 | |
45461e0d | 3430 | if (!ret.empty ()) |
25f9533e SDJ |
3431 | { |
3432 | /* We are only interested in checking one element. */ | |
45461e0d | 3433 | probe *p = ret[0]; |
25f9533e | 3434 | |
935676c9 | 3435 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3436 | { |
3437 | /* We cannot use the probe interface here, because it does | |
3438 | not know how to evaluate arguments. */ | |
45461e0d | 3439 | ret.clear (); |
25f9533e SDJ |
3440 | } |
3441 | } | |
3442 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3443 | bp_objfile_data->exception_searched = 1; |
3444 | } | |
3445 | ||
45461e0d | 3446 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3447 | { |
b926417a | 3448 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3449 | |
3450 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3451 | { |
729662a5 | 3452 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3453 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3454 | bp_exception_master, |
3455 | &internal_breakpoint_ops); | |
d28cd78a | 3456 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3457 | b->enable_state = bp_disabled; |
3458 | } | |
3459 | ||
3460 | continue; | |
3461 | } | |
3462 | ||
3463 | /* Otherwise, try the hook function. */ | |
3464 | ||
3b7344d5 | 3465 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3466 | continue; |
3467 | ||
3468 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3469 | |
3b7344d5 | 3470 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3471 | { |
3b7344d5 | 3472 | struct bound_minimal_symbol debug_hook; |
186c406b | 3473 | |
17450429 | 3474 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3475 | if (debug_hook.minsym == NULL) |
17450429 | 3476 | { |
3b7344d5 | 3477 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3478 | continue; |
3479 | } | |
3480 | ||
3481 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3482 | } |
17450429 | 3483 | |
77e371c0 | 3484 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3485 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3486 | current_top_target ()); | |
06edf0c0 PA |
3487 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3488 | &internal_breakpoint_ops); | |
67994074 KS |
3489 | initialize_explicit_location (&explicit_loc); |
3490 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3491 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3492 | b->enable_state = bp_disabled; |
186c406b | 3493 | } |
186c406b TT |
3494 | } |
3495 | ||
9ef9e6a6 KS |
3496 | /* Does B have a location spec? */ |
3497 | ||
3498 | static int | |
3499 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3500 | { | |
d28cd78a | 3501 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3502 | } |
3503 | ||
c906108c | 3504 | void |
fba45db2 | 3505 | update_breakpoints_after_exec (void) |
c906108c | 3506 | { |
35df4500 | 3507 | struct breakpoint *b, *b_tmp; |
876fa593 | 3508 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3509 | |
25b22b0a PA |
3510 | /* We're about to delete breakpoints from GDB's lists. If the |
3511 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3512 | writing the breakpoints' "shadow contents" back into memory. The | |
3513 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3514 | do that. Instead, the target is responsible from marking | |
3515 | breakpoints out as soon as it detects an exec. We don't do that | |
3516 | here instead, because there may be other attempts to delete | |
3517 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3518 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3519 | if (bploc->pspace == current_program_space) |
3520 | gdb_assert (!bploc->inserted); | |
c906108c | 3521 | |
35df4500 | 3522 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3523 | { |
6c95b8df PA |
3524 | if (b->pspace != current_program_space) |
3525 | continue; | |
3526 | ||
4a64f543 | 3527 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3528 | if (b->type == bp_shlib_event) |
3529 | { | |
3530 | delete_breakpoint (b); | |
3531 | continue; | |
3532 | } | |
c906108c | 3533 | |
4a64f543 | 3534 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3535 | if (b->type == bp_jit_event) |
3536 | { | |
3537 | delete_breakpoint (b); | |
3538 | continue; | |
3539 | } | |
3540 | ||
1900040c | 3541 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3542 | as must overlay event and longjmp master breakpoints. */ |
3543 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3544 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3545 | || b->type == bp_exception_master) | |
c4093a6a JM |
3546 | { |
3547 | delete_breakpoint (b); | |
3548 | continue; | |
3549 | } | |
3550 | ||
4a64f543 | 3551 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3552 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3553 | { |
3554 | delete_breakpoint (b); | |
3555 | continue; | |
3556 | } | |
3557 | ||
7c16b83e PA |
3558 | /* Just like single-step breakpoints. */ |
3559 | if (b->type == bp_single_step) | |
3560 | { | |
3561 | delete_breakpoint (b); | |
3562 | continue; | |
3563 | } | |
3564 | ||
611c83ae PA |
3565 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3566 | after an exec. */ | |
186c406b | 3567 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3568 | || b->type == bp_longjmp_call_dummy |
186c406b | 3569 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3570 | { |
3571 | delete_breakpoint (b); | |
3572 | continue; | |
3573 | } | |
3574 | ||
ce78b96d JB |
3575 | if (b->type == bp_catchpoint) |
3576 | { | |
3577 | /* For now, none of the bp_catchpoint breakpoints need to | |
3578 | do anything at this point. In the future, if some of | |
3579 | the catchpoints need to something, we will need to add | |
3580 | a new method, and call this method from here. */ | |
3581 | continue; | |
3582 | } | |
3583 | ||
c5aa993b JM |
3584 | /* bp_finish is a special case. The only way we ought to be able |
3585 | to see one of these when an exec() has happened, is if the user | |
3586 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3587 | carries them to the call-site of the current callee, by setting | |
3588 | a temporary bp there and resuming. But in this case, the finish | |
3589 | will carry them entirely through the vfork & exec. | |
3590 | ||
3591 | We don't want to allow a bp_finish to remain inserted now. But | |
3592 | we can't safely delete it, 'cause finish_command has a handle to | |
3593 | the bp on a bpstat, and will later want to delete it. There's a | |
3594 | chance (and I've seen it happen) that if we delete the bp_finish | |
3595 | here, that its storage will get reused by the time finish_command | |
3596 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3597 | We really must allow finish_command to delete a bp_finish. | |
3598 | ||
e5dd4106 | 3599 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3600 | it's safe to delete something others may have handles to?" |
3601 | problem, what we'll do here is just uninsert the bp_finish, and | |
3602 | let finish_command delete it. | |
3603 | ||
3604 | (We know the bp_finish is "doomed" in the sense that it's | |
3605 | momentary, and will be deleted as soon as finish_command sees | |
3606 | the inferior stopped. So it doesn't matter that the bp's | |
3607 | address is probably bogus in the new a.out, unlike e.g., the | |
3608 | solib breakpoints.) */ | |
c5aa993b | 3609 | |
c5aa993b JM |
3610 | if (b->type == bp_finish) |
3611 | { | |
3612 | continue; | |
3613 | } | |
3614 | ||
3615 | /* Without a symbolic address, we have little hope of the | |
3616 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3617 | a.out. */ |
9ef9e6a6 | 3618 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3619 | { |
3620 | delete_breakpoint (b); | |
3621 | continue; | |
3622 | } | |
c5aa993b | 3623 | } |
c906108c SS |
3624 | } |
3625 | ||
3626 | int | |
d80ee84f | 3627 | detach_breakpoints (ptid_t ptid) |
c906108c | 3628 | { |
35df4500 | 3629 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3630 | int val = 0; |
2989a365 | 3631 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3632 | struct inferior *inf = current_inferior (); |
c5aa993b | 3633 | |
e99b03dc | 3634 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3635 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3636 | |
6c95b8df | 3637 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3638 | inferior_ptid = ptid; |
35df4500 | 3639 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3640 | { |
35df4500 | 3641 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3642 | continue; |
3643 | ||
bd9673a4 PW |
3644 | /* This function must physically remove breakpoints locations |
3645 | from the specified ptid, without modifying the breakpoint | |
3646 | package's state. Locations of type bp_loc_other are only | |
3647 | maintained at GDB side. So, there is no need to remove | |
3648 | these bp_loc_other locations. Moreover, removing these | |
3649 | would modify the breakpoint package's state. */ | |
3650 | if (bl->loc_type == bp_loc_other) | |
3651 | continue; | |
3652 | ||
35df4500 | 3653 | if (bl->inserted) |
b2b6a7da | 3654 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3655 | } |
d03285ec | 3656 | |
3a1bae8e | 3657 | return val; |
c906108c SS |
3658 | } |
3659 | ||
35df4500 | 3660 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3661 | Note that this is used to detach breakpoints from a child fork. |
3662 | When we get here, the child isn't in the inferior list, and neither | |
3663 | do we have objects to represent its address space --- we should | |
35df4500 | 3664 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3665 | |
c906108c | 3666 | static int |
b2b6a7da | 3667 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3668 | { |
3669 | int val; | |
c5aa993b | 3670 | |
35df4500 TJB |
3671 | /* BL is never in moribund_locations by our callers. */ |
3672 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3673 | |
74960c60 VP |
3674 | /* The type of none suggests that owner is actually deleted. |
3675 | This should not ever happen. */ | |
35df4500 | 3676 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3677 | |
35df4500 TJB |
3678 | if (bl->loc_type == bp_loc_software_breakpoint |
3679 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3680 | { |
c02f5703 MS |
3681 | /* "Normal" instruction breakpoint: either the standard |
3682 | trap-instruction bp (bp_breakpoint), or a | |
3683 | bp_hardware_breakpoint. */ | |
3684 | ||
3685 | /* First check to see if we have to handle an overlay. */ | |
3686 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3687 | || bl->section == NULL |
3688 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3689 | { |
3690 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3691 | |
3692 | /* If we're trying to uninsert a memory breakpoint that we | |
3693 | know is set in a dynamic object that is marked | |
3694 | shlib_disabled, then either the dynamic object was | |
3695 | removed with "remove-symbol-file" or with | |
3696 | "nosharedlibrary". In the former case, we don't know | |
3697 | whether another dynamic object might have loaded over the | |
3698 | breakpoint's address -- the user might well let us know | |
3699 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3700 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3701 | list of dynamically loaded objects). If we have the |
3702 | breakpoint's shadow memory, that is, this is a software | |
3703 | breakpoint managed by GDB, check whether the breakpoint | |
3704 | is still inserted in memory, to avoid overwriting wrong | |
3705 | code with stale saved shadow contents. Note that HW | |
3706 | breakpoints don't have shadow memory, as they're | |
3707 | implemented using a mechanism that is not dependent on | |
3708 | being able to modify the target's memory, and as such | |
3709 | they should always be removed. */ | |
3710 | if (bl->shlib_disabled | |
3711 | && bl->target_info.shadow_len != 0 | |
3712 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3713 | val = 0; | |
3714 | else | |
73971819 | 3715 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3716 | } |
c906108c SS |
3717 | else |
3718 | { | |
4a64f543 | 3719 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3720 | Did we set a breakpoint at the LMA? */ |
3721 | if (!overlay_events_enabled) | |
3722 | { | |
3723 | /* Yes -- overlay event support is not active, so we | |
3724 | should have set a breakpoint at the LMA. Remove it. | |
3725 | */ | |
c02f5703 MS |
3726 | /* Ignore any failures: if the LMA is in ROM, we will |
3727 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3728 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3729 | target_remove_hw_breakpoint (bl->gdbarch, | |
3730 | &bl->overlay_target_info); | |
c02f5703 | 3731 | else |
35df4500 | 3732 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3733 | &bl->overlay_target_info, |
3734 | reason); | |
c02f5703 MS |
3735 | } |
3736 | /* Did we set a breakpoint at the VMA? | |
3737 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3738 | if (bl->inserted) |
c906108c | 3739 | { |
c02f5703 MS |
3740 | /* Yes -- remove it. Previously we did not bother to |
3741 | remove the breakpoint if the section had been | |
3742 | unmapped, but let's not rely on that being safe. We | |
3743 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3744 | |
3745 | /* However, we should remove *software* breakpoints only | |
3746 | if the section is still mapped, or else we overwrite | |
3747 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3748 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3749 | || section_is_mapped (bl->section)) | |
73971819 | 3750 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3751 | else |
3752 | val = 0; | |
c906108c | 3753 | } |
c02f5703 MS |
3754 | else |
3755 | { | |
3756 | /* No -- not inserted, so no need to remove. No error. */ | |
3757 | val = 0; | |
3758 | } | |
c906108c | 3759 | } |
879d1e6b | 3760 | |
08351840 PA |
3761 | /* In some cases, we might not be able to remove a breakpoint in |
3762 | a shared library that has already been removed, but we have | |
3763 | not yet processed the shlib unload event. Similarly for an | |
3764 | unloaded add-symbol-file object - the user might not yet have | |
3765 | had the chance to remove-symbol-file it. shlib_disabled will | |
3766 | be set if the library/object has already been removed, but | |
3767 | the breakpoint hasn't been uninserted yet, e.g., after | |
3768 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3769 | always-inserted mode. */ | |
076855f9 | 3770 | if (val |
08351840 PA |
3771 | && (bl->loc_type == bp_loc_software_breakpoint |
3772 | && (bl->shlib_disabled | |
3773 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3774 | || shared_objfile_contains_address_p (bl->pspace, |
3775 | bl->address)))) | |
879d1e6b UW |
3776 | val = 0; |
3777 | ||
c906108c SS |
3778 | if (val) |
3779 | return val; | |
b2b6a7da | 3780 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3781 | } |
35df4500 | 3782 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3783 | { |
77b06cd7 TJB |
3784 | gdb_assert (bl->owner->ops != NULL |
3785 | && bl->owner->ops->remove_location != NULL); | |
3786 | ||
b2b6a7da | 3787 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3788 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3789 | |
c906108c | 3790 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3791 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3792 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3793 | bl->owner->number); |
c906108c | 3794 | } |
35df4500 TJB |
3795 | else if (bl->owner->type == bp_catchpoint |
3796 | && breakpoint_enabled (bl->owner) | |
3797 | && !bl->duplicate) | |
ce78b96d | 3798 | { |
77b06cd7 TJB |
3799 | gdb_assert (bl->owner->ops != NULL |
3800 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3801 | |
73971819 | 3802 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3803 | if (val) |
3804 | return val; | |
77b06cd7 | 3805 | |
b2b6a7da | 3806 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3807 | } |
c906108c SS |
3808 | |
3809 | return 0; | |
3810 | } | |
3811 | ||
6c95b8df | 3812 | static int |
834c0d03 | 3813 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3814 | { |
35df4500 TJB |
3815 | /* BL is never in moribund_locations by our callers. */ |
3816 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3817 | |
6c95b8df PA |
3818 | /* The type of none suggests that owner is actually deleted. |
3819 | This should not ever happen. */ | |
35df4500 | 3820 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3821 | |
5ed8105e | 3822 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3823 | |
35df4500 | 3824 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3825 | |
5ed8105e | 3826 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3827 | } |
3828 | ||
c906108c SS |
3829 | /* Clear the "inserted" flag in all breakpoints. */ |
3830 | ||
25b22b0a | 3831 | void |
fba45db2 | 3832 | mark_breakpoints_out (void) |
c906108c | 3833 | { |
35df4500 | 3834 | struct bp_location *bl, **blp_tmp; |
c906108c | 3835 | |
35df4500 | 3836 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3837 | if (bl->pspace == current_program_space) |
35df4500 | 3838 | bl->inserted = 0; |
c906108c SS |
3839 | } |
3840 | ||
53a5351d JM |
3841 | /* Clear the "inserted" flag in all breakpoints and delete any |
3842 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3843 | |
3844 | Plus other such housekeeping that has to be done for breakpoints | |
3845 | between runs. | |
3846 | ||
53a5351d JM |
3847 | Note: this function gets called at the end of a run (by |
3848 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3849 | init_wait_for_inferior). */ |
c906108c SS |
3850 | |
3851 | ||
3852 | ||
3853 | void | |
fba45db2 | 3854 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3855 | { |
35df4500 | 3856 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3857 | struct program_space *pspace = current_program_space; |
c906108c | 3858 | |
50c71eaf PA |
3859 | /* If breakpoint locations are shared across processes, then there's |
3860 | nothing to do. */ | |
f5656ead | 3861 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3862 | return; |
3863 | ||
1a853c52 | 3864 | mark_breakpoints_out (); |
075f6582 | 3865 | |
35df4500 | 3866 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3867 | { |
6c95b8df PA |
3868 | if (b->loc && b->loc->pspace != pspace) |
3869 | continue; | |
3870 | ||
c5aa993b JM |
3871 | switch (b->type) |
3872 | { | |
3873 | case bp_call_dummy: | |
e2e4d78b | 3874 | case bp_longjmp_call_dummy: |
c906108c | 3875 | |
c5aa993b | 3876 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3877 | cause problems when the inferior is rerun, so we better get |
3878 | rid of it. */ | |
3879 | ||
3880 | case bp_watchpoint_scope: | |
3881 | ||
3882 | /* Also get rid of scope breakpoints. */ | |
3883 | ||
3884 | case bp_shlib_event: | |
3885 | ||
3886 | /* Also remove solib event breakpoints. Their addresses may | |
3887 | have changed since the last time we ran the program. | |
3888 | Actually we may now be debugging against different target; | |
3889 | and so the solib backend that installed this breakpoint may | |
3890 | not be used in by the target. E.g., | |
3891 | ||
3892 | (gdb) file prog-linux | |
3893 | (gdb) run # native linux target | |
3894 | ... | |
3895 | (gdb) kill | |
3896 | (gdb) file prog-win.exe | |
3897 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3898 | */ | |
c906108c | 3899 | |
f59f708a PA |
3900 | case bp_step_resume: |
3901 | ||
3902 | /* Also remove step-resume breakpoints. */ | |
3903 | ||
7c16b83e PA |
3904 | case bp_single_step: |
3905 | ||
3906 | /* Also remove single-step breakpoints. */ | |
3907 | ||
c5aa993b JM |
3908 | delete_breakpoint (b); |
3909 | break; | |
c906108c | 3910 | |
c5aa993b JM |
3911 | case bp_watchpoint: |
3912 | case bp_hardware_watchpoint: | |
3913 | case bp_read_watchpoint: | |
3914 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3915 | { |
3916 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3917 | |
3a5c3e22 PA |
3918 | /* Likewise for watchpoints on local expressions. */ |
3919 | if (w->exp_valid_block != NULL) | |
3920 | delete_breakpoint (b); | |
63000888 | 3921 | else |
3a5c3e22 | 3922 | { |
63000888 PA |
3923 | /* Get rid of existing locations, which are no longer |
3924 | valid. New ones will be created in | |
3925 | update_watchpoint, when the inferior is restarted. | |
3926 | The next update_global_location_list call will | |
3927 | garbage collect them. */ | |
3928 | b->loc = NULL; | |
3929 | ||
3930 | if (context == inf_starting) | |
3931 | { | |
3932 | /* Reset val field to force reread of starting value in | |
3933 | insert_breakpoints. */ | |
850645cf | 3934 | w->val.reset (nullptr); |
63000888 PA |
3935 | w->val_valid = 0; |
3936 | } | |
3937 | } | |
3a5c3e22 | 3938 | } |
c5aa993b JM |
3939 | break; |
3940 | default: | |
c5aa993b JM |
3941 | break; |
3942 | } | |
3943 | } | |
1c5cfe86 PA |
3944 | |
3945 | /* Get rid of the moribund locations. */ | |
1123588c | 3946 | for (bp_location *bl : moribund_locations) |
35df4500 | 3947 | decref_bp_location (&bl); |
1123588c | 3948 | moribund_locations.clear (); |
c906108c SS |
3949 | } |
3950 | ||
6c95b8df PA |
3951 | /* These functions concern about actual breakpoints inserted in the |
3952 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3953 | we need to hop over the bkpt --- so we check for address space | |
3954 | match, not program space. */ | |
3955 | ||
c2c6d25f JM |
3956 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3957 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3958 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3959 | permanent breakpoint. | |
3960 | - When continuing from a location with an ordinary breakpoint, we | |
3961 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3962 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3963 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3964 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3965 | |
c2c6d25f | 3966 | enum breakpoint_here |
accd0bcd | 3967 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3968 | { |
35df4500 | 3969 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3970 | int any_breakpoint_here = 0; |
c906108c | 3971 | |
35df4500 | 3972 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3973 | { |
35df4500 TJB |
3974 | if (bl->loc_type != bp_loc_software_breakpoint |
3975 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3976 | continue; |
3977 | ||
f1310107 | 3978 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3979 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3980 | || bl->permanent) |
f1310107 | 3981 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3982 | { |
3983 | if (overlay_debugging | |
35df4500 TJB |
3984 | && section_is_overlay (bl->section) |
3985 | && !section_is_mapped (bl->section)) | |
075f6582 | 3986 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3987 | else if (bl->permanent) |
075f6582 DJ |
3988 | return permanent_breakpoint_here; |
3989 | else | |
3990 | any_breakpoint_here = 1; | |
3991 | } | |
3992 | } | |
c906108c | 3993 | |
f486487f | 3994 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3995 | } |
3996 | ||
d35ae833 PA |
3997 | /* See breakpoint.h. */ |
3998 | ||
3999 | int | |
accd0bcd | 4000 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4001 | CORE_ADDR addr, ULONGEST len) |
4002 | { | |
4003 | struct bp_location *bl, **blp_tmp; | |
4004 | ||
4005 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4006 | { | |
4007 | if (bl->loc_type != bp_loc_software_breakpoint | |
4008 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4009 | continue; | |
4010 | ||
4011 | if ((breakpoint_enabled (bl->owner) | |
4012 | || bl->permanent) | |
4013 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4014 | addr, len)) | |
4015 | { | |
4016 | if (overlay_debugging | |
4017 | && section_is_overlay (bl->section) | |
4018 | && !section_is_mapped (bl->section)) | |
4019 | { | |
4020 | /* Unmapped overlay -- can't be a match. */ | |
4021 | continue; | |
4022 | } | |
4023 | ||
4024 | return 1; | |
4025 | } | |
4026 | } | |
4027 | ||
4028 | return 0; | |
4029 | } | |
4030 | ||
1c5cfe86 PA |
4031 | /* Return true if there's a moribund breakpoint at PC. */ |
4032 | ||
4033 | int | |
accd0bcd | 4034 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4035 | { |
1123588c | 4036 | for (bp_location *loc : moribund_locations) |
f1310107 | 4037 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4038 | return 1; |
4039 | ||
4040 | return 0; | |
4041 | } | |
c2c6d25f | 4042 | |
f7ce857f PA |
4043 | /* Returns non-zero iff BL is inserted at PC, in address space |
4044 | ASPACE. */ | |
4045 | ||
4046 | static int | |
4047 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4048 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4049 | { |
4050 | if (bl->inserted | |
4051 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4052 | aspace, pc)) | |
4053 | { | |
4054 | if (overlay_debugging | |
4055 | && section_is_overlay (bl->section) | |
4056 | && !section_is_mapped (bl->section)) | |
4057 | return 0; /* unmapped overlay -- can't be a match */ | |
4058 | else | |
4059 | return 1; | |
4060 | } | |
4061 | return 0; | |
4062 | } | |
4063 | ||
a1fd2fa5 | 4064 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4065 | |
4066 | int | |
accd0bcd | 4067 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4068 | { |
f7ce857f | 4069 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4070 | |
f7ce857f | 4071 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4072 | { |
f7ce857f PA |
4073 | struct bp_location *bl = *blp; |
4074 | ||
35df4500 TJB |
4075 | if (bl->loc_type != bp_loc_software_breakpoint |
4076 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4077 | continue; |
4078 | ||
f7ce857f PA |
4079 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4080 | return 1; | |
c5aa993b | 4081 | } |
c36b740a VP |
4082 | return 0; |
4083 | } | |
4084 | ||
a1fd2fa5 PA |
4085 | /* This function returns non-zero iff there is a software breakpoint |
4086 | inserted at PC. */ | |
c36b740a VP |
4087 | |
4088 | int | |
accd0bcd | 4089 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4090 | CORE_ADDR pc) |
4fa8626c | 4091 | { |
f7ce857f | 4092 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4093 | |
f7ce857f | 4094 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4095 | { |
f7ce857f PA |
4096 | struct bp_location *bl = *blp; |
4097 | ||
35df4500 | 4098 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4099 | continue; |
4100 | ||
f7ce857f PA |
4101 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4102 | return 1; | |
4fa8626c DJ |
4103 | } |
4104 | ||
4105 | return 0; | |
9c02b525 PA |
4106 | } |
4107 | ||
4108 | /* See breakpoint.h. */ | |
4109 | ||
4110 | int | |
accd0bcd | 4111 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4112 | CORE_ADDR pc) |
4113 | { | |
4114 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4115 | |
4116 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4117 | { | |
4118 | struct bp_location *bl = *blp; | |
4119 | ||
4120 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4121 | continue; | |
4122 | ||
4123 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4124 | return 1; | |
4125 | } | |
4126 | ||
4127 | return 0; | |
4fa8626c DJ |
4128 | } |
4129 | ||
9093389c | 4130 | int |
accd0bcd | 4131 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4132 | CORE_ADDR addr, ULONGEST len) |
4133 | { | |
4134 | struct breakpoint *bpt; | |
4135 | ||
4136 | ALL_BREAKPOINTS (bpt) | |
4137 | { | |
4138 | struct bp_location *loc; | |
4139 | ||
4140 | if (bpt->type != bp_hardware_watchpoint | |
4141 | && bpt->type != bp_access_watchpoint) | |
4142 | continue; | |
4143 | ||
4144 | if (!breakpoint_enabled (bpt)) | |
4145 | continue; | |
4146 | ||
4147 | for (loc = bpt->loc; loc; loc = loc->next) | |
4148 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4149 | { | |
4150 | CORE_ADDR l, h; | |
4151 | ||
4152 | /* Check for intersection. */ | |
768adc05 PA |
4153 | l = std::max<CORE_ADDR> (loc->address, addr); |
4154 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4155 | if (l < h) |
4156 | return 1; | |
4157 | } | |
4158 | } | |
4159 | return 0; | |
4160 | } | |
c906108c | 4161 | \f |
c5aa993b | 4162 | |
c906108c SS |
4163 | /* bpstat stuff. External routines' interfaces are documented |
4164 | in breakpoint.h. */ | |
4165 | ||
4166 | int | |
c326b90e | 4167 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4168 | { |
533be4dd | 4169 | return (ep->type == bp_catchpoint); |
c906108c SS |
4170 | } |
4171 | ||
f431efe5 PA |
4172 | /* Frees any storage that is part of a bpstat. Does not walk the |
4173 | 'next' chain. */ | |
4174 | ||
04afa70c | 4175 | bpstats::~bpstats () |
198757a8 | 4176 | { |
04afa70c TT |
4177 | if (bp_location_at != NULL) |
4178 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4179 | } |
4180 | ||
c906108c SS |
4181 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4182 | Also free any storage that is part of a bpstat. */ | |
4183 | ||
4184 | void | |
fba45db2 | 4185 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4186 | { |
4187 | bpstat p; | |
4188 | bpstat q; | |
4189 | ||
4190 | if (bsp == 0) | |
4191 | return; | |
4192 | p = *bsp; | |
4193 | while (p != NULL) | |
4194 | { | |
4195 | q = p->next; | |
04afa70c | 4196 | delete p; |
c906108c SS |
4197 | p = q; |
4198 | } | |
4199 | *bsp = NULL; | |
4200 | } | |
4201 | ||
04afa70c TT |
4202 | bpstats::bpstats (const bpstats &other) |
4203 | : next (NULL), | |
4204 | bp_location_at (other.bp_location_at), | |
4205 | breakpoint_at (other.breakpoint_at), | |
4206 | commands (other.commands), | |
04afa70c TT |
4207 | print (other.print), |
4208 | stop (other.stop), | |
4209 | print_it (other.print_it) | |
4210 | { | |
850645cf TT |
4211 | if (other.old_val != NULL) |
4212 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4213 | incref_bp_location (bp_location_at); |
04afa70c TT |
4214 | } |
4215 | ||
c906108c SS |
4216 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4217 | is part of the bpstat is copied as well. */ | |
4218 | ||
4219 | bpstat | |
fba45db2 | 4220 | bpstat_copy (bpstat bs) |
c906108c SS |
4221 | { |
4222 | bpstat p = NULL; | |
4223 | bpstat tmp; | |
4224 | bpstat retval = NULL; | |
4225 | ||
4226 | if (bs == NULL) | |
4227 | return bs; | |
4228 | ||
4229 | for (; bs != NULL; bs = bs->next) | |
4230 | { | |
04afa70c | 4231 | tmp = new bpstats (*bs); |
31cc81e9 | 4232 | |
c906108c SS |
4233 | if (p == NULL) |
4234 | /* This is the first thing in the chain. */ | |
4235 | retval = tmp; | |
4236 | else | |
4237 | p->next = tmp; | |
4238 | p = tmp; | |
4239 | } | |
4240 | p->next = NULL; | |
4241 | return retval; | |
4242 | } | |
4243 | ||
4a64f543 | 4244 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4245 | |
4246 | bpstat | |
fba45db2 | 4247 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4248 | { |
c5aa993b JM |
4249 | if (bsp == NULL) |
4250 | return NULL; | |
c906108c | 4251 | |
c5aa993b JM |
4252 | for (; bsp != NULL; bsp = bsp->next) |
4253 | { | |
f431efe5 | 4254 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4255 | return bsp; |
4256 | } | |
c906108c SS |
4257 | return NULL; |
4258 | } | |
4259 | ||
ab04a2af TT |
4260 | /* See breakpoint.h. */ |
4261 | ||
47591c29 | 4262 | int |
427cd150 | 4263 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4264 | { |
ab04a2af TT |
4265 | for (; bsp != NULL; bsp = bsp->next) |
4266 | { | |
427cd150 TT |
4267 | if (bsp->breakpoint_at == NULL) |
4268 | { | |
4269 | /* A moribund location can never explain a signal other than | |
4270 | GDB_SIGNAL_TRAP. */ | |
4271 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4272 | return 1; |
427cd150 TT |
4273 | } |
4274 | else | |
47591c29 PA |
4275 | { |
4276 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4277 | sig)) | |
4278 | return 1; | |
4279 | } | |
ab04a2af TT |
4280 | } |
4281 | ||
47591c29 | 4282 | return 0; |
ab04a2af TT |
4283 | } |
4284 | ||
4a64f543 MS |
4285 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4286 | stopped at. *BSP upon return is a bpstat which points to the | |
4287 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4288 | good for anything but further calls to bpstat_num). | |
4289 | ||
8671a17b PA |
4290 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4291 | Return -1 if stopped at a breakpoint that has been deleted since | |
4292 | we set it. | |
4293 | Return 1 otherwise. */ | |
c906108c SS |
4294 | |
4295 | int | |
8671a17b | 4296 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4297 | { |
4298 | struct breakpoint *b; | |
4299 | ||
4300 | if ((*bsp) == NULL) | |
4301 | return 0; /* No more breakpoint values */ | |
8671a17b | 4302 | |
4a64f543 MS |
4303 | /* We assume we'll never have several bpstats that correspond to a |
4304 | single breakpoint -- otherwise, this function might return the | |
4305 | same number more than once and this will look ugly. */ | |
f431efe5 | 4306 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4307 | *bsp = (*bsp)->next; |
4308 | if (b == NULL) | |
4309 | return -1; /* breakpoint that's been deleted since */ | |
4310 | ||
4311 | *num = b->number; /* We have its number */ | |
4312 | return 1; | |
c906108c SS |
4313 | } |
4314 | ||
e93ca019 | 4315 | /* See breakpoint.h. */ |
c906108c SS |
4316 | |
4317 | void | |
e93ca019 | 4318 | bpstat_clear_actions (void) |
c906108c | 4319 | { |
e93ca019 JK |
4320 | bpstat bs; |
4321 | ||
00431a78 | 4322 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4323 | return; |
4324 | ||
00431a78 | 4325 | thread_info *tp = inferior_thread (); |
e93ca019 | 4326 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4327 | { |
d1b0a7bf | 4328 | bs->commands = NULL; |
850645cf | 4329 | bs->old_val.reset (nullptr); |
c906108c SS |
4330 | } |
4331 | } | |
4332 | ||
f3b1572e PA |
4333 | /* Called when a command is about to proceed the inferior. */ |
4334 | ||
4335 | static void | |
4336 | breakpoint_about_to_proceed (void) | |
4337 | { | |
d7e15655 | 4338 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4339 | { |
4340 | struct thread_info *tp = inferior_thread (); | |
4341 | ||
4342 | /* Allow inferior function calls in breakpoint commands to not | |
4343 | interrupt the command list. When the call finishes | |
4344 | successfully, the inferior will be standing at the same | |
4345 | breakpoint as if nothing happened. */ | |
16c381f0 | 4346 | if (tp->control.in_infcall) |
f3b1572e PA |
4347 | return; |
4348 | } | |
4349 | ||
4350 | breakpoint_proceeded = 1; | |
4351 | } | |
4352 | ||
abf85f46 JK |
4353 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4354 | or its equivalent. */ | |
4355 | ||
4356 | static int | |
4357 | command_line_is_silent (struct command_line *cmd) | |
4358 | { | |
4f45d445 | 4359 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4360 | } |
4361 | ||
4a64f543 MS |
4362 | /* Execute all the commands associated with all the breakpoints at |
4363 | this location. Any of these commands could cause the process to | |
4364 | proceed beyond this point, etc. We look out for such changes by | |
4365 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4366 | |
347bddb7 PA |
4367 | Returns true if a breakpoint command resumed the inferior. In that |
4368 | case, it is the caller's responsibility to recall it again with the | |
4369 | bpstat of the current thread. */ | |
4370 | ||
4371 | static int | |
4372 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4373 | { |
4374 | bpstat bs; | |
347bddb7 | 4375 | int again = 0; |
c906108c SS |
4376 | |
4377 | /* Avoid endless recursion if a `source' command is contained | |
4378 | in bs->commands. */ | |
4379 | if (executing_breakpoint_commands) | |
347bddb7 | 4380 | return 0; |
c906108c | 4381 | |
81b1e71c TT |
4382 | scoped_restore save_executing |
4383 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4384 | |
1ac32117 | 4385 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4386 | |
4a64f543 | 4387 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4388 | bs = *bsp; |
4389 | ||
4390 | breakpoint_proceeded = 0; | |
4391 | for (; bs != NULL; bs = bs->next) | |
4392 | { | |
d1b0a7bf | 4393 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4394 | |
4395 | /* Take ownership of the BSP's command tree, if it has one. | |
4396 | ||
4397 | The command tree could legitimately contain commands like | |
4398 | 'step' and 'next', which call clear_proceed_status, which | |
4399 | frees stop_bpstat's command tree. To make sure this doesn't | |
4400 | free the tree we're executing out from under us, we need to | |
4401 | take ownership of the tree ourselves. Since a given bpstat's | |
4402 | commands are only executed once, we don't need to copy it; we | |
4403 | can clear the pointer in the bpstat, and make sure we free | |
4404 | the tree when we're done. */ | |
d1b0a7bf | 4405 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4406 | bs->commands = NULL; |
d1b0a7bf TT |
4407 | if (ccmd != NULL) |
4408 | cmd = ccmd.get (); | |
abf85f46 JK |
4409 | if (command_line_is_silent (cmd)) |
4410 | { | |
4411 | /* The action has been already done by bpstat_stop_status. */ | |
4412 | cmd = cmd->next; | |
4413 | } | |
6c50ab1c | 4414 | |
c906108c SS |
4415 | while (cmd != NULL) |
4416 | { | |
4417 | execute_control_command (cmd); | |
4418 | ||
4419 | if (breakpoint_proceeded) | |
4420 | break; | |
4421 | else | |
4422 | cmd = cmd->next; | |
4423 | } | |
6c50ab1c | 4424 | |
c906108c | 4425 | if (breakpoint_proceeded) |
32c1e744 | 4426 | { |
cb814510 | 4427 | if (current_ui->async) |
347bddb7 PA |
4428 | /* If we are in async mode, then the target might be still |
4429 | running, not stopped at any breakpoint, so nothing for | |
4430 | us to do here -- just return to the event loop. */ | |
4431 | ; | |
32c1e744 VP |
4432 | else |
4433 | /* In sync mode, when execute_control_command returns | |
4434 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4435 | Breakpoint commands for that stop were not run, since |
4436 | execute_command does not run breakpoint commands -- | |
4437 | only command_line_handler does, but that one is not | |
4438 | involved in execution of breakpoint commands. So, we | |
4439 | can now execute breakpoint commands. It should be | |
4440 | noted that making execute_command do bpstat actions is | |
4441 | not an option -- in this case we'll have recursive | |
4442 | invocation of bpstat for each breakpoint with a | |
4443 | command, and can easily blow up GDB stack. Instead, we | |
4444 | return true, which will trigger the caller to recall us | |
4445 | with the new stop_bpstat. */ | |
4446 | again = 1; | |
4447 | break; | |
32c1e744 | 4448 | } |
c906108c | 4449 | } |
347bddb7 PA |
4450 | return again; |
4451 | } | |
4452 | ||
00431a78 PA |
4453 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4454 | one, is alive and has execution. Return NULL otherwise. */ | |
4455 | ||
4456 | static thread_info * | |
4457 | get_bpstat_thread () | |
4458 | { | |
4459 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4460 | return NULL; | |
4461 | ||
4462 | thread_info *tp = inferior_thread (); | |
4463 | if (tp->state == THREAD_EXITED || tp->executing) | |
4464 | return NULL; | |
4465 | return tp; | |
4466 | } | |
4467 | ||
347bddb7 PA |
4468 | void |
4469 | bpstat_do_actions (void) | |
4470 | { | |
694c6bf5 | 4471 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4472 | thread_info *tp; |
353d1d73 | 4473 | |
347bddb7 | 4474 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4475 | while ((tp = get_bpstat_thread ()) != NULL) |
4476 | { | |
4477 | /* Since in sync mode, bpstat_do_actions may resume the | |
4478 | inferior, and only return when it is stopped at the next | |
4479 | breakpoint, we keep doing breakpoint actions until it returns | |
4480 | false to indicate the inferior was not resumed. */ | |
4481 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4482 | break; | |
4483 | } | |
353d1d73 | 4484 | |
694c6bf5 | 4485 | cleanup_if_error.release (); |
c906108c SS |
4486 | } |
4487 | ||
fa4727a6 DJ |
4488 | /* Print out the (old or new) value associated with a watchpoint. */ |
4489 | ||
4490 | static void | |
4491 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4492 | { | |
4493 | if (val == NULL) | |
4494 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4495 | else | |
79a45b7d TT |
4496 | { |
4497 | struct value_print_options opts; | |
4498 | get_user_print_options (&opts); | |
4499 | value_print (val, stream, &opts); | |
4500 | } | |
fa4727a6 DJ |
4501 | } |
4502 | ||
f303dbd6 PA |
4503 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4504 | debugging multiple threads. */ | |
4505 | ||
4506 | void | |
4507 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4508 | { | |
112e8700 | 4509 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4510 | return; |
4511 | ||
112e8700 | 4512 | uiout->text ("\n"); |
f303dbd6 PA |
4513 | |
4514 | if (show_thread_that_caused_stop ()) | |
4515 | { | |
4516 | const char *name; | |
4517 | struct thread_info *thr = inferior_thread (); | |
4518 | ||
112e8700 SM |
4519 | uiout->text ("Thread "); |
4520 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4521 | |
4522 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4523 | if (name != NULL) | |
4524 | { | |
112e8700 SM |
4525 | uiout->text (" \""); |
4526 | uiout->field_fmt ("name", "%s", name); | |
4527 | uiout->text ("\""); | |
f303dbd6 PA |
4528 | } |
4529 | ||
112e8700 | 4530 | uiout->text (" hit "); |
f303dbd6 PA |
4531 | } |
4532 | } | |
4533 | ||
e514a9d6 | 4534 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4535 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4536 | 'print_it' in the bpstat structure. Under some circumstances we |
4537 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4538 | normal_stop(). */ |
e514a9d6 JM |
4539 | |
4540 | static enum print_stop_action | |
4541 | print_bp_stop_message (bpstat bs) | |
4542 | { | |
4543 | switch (bs->print_it) | |
4544 | { | |
4545 | case print_it_noop: | |
4a64f543 | 4546 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4547 | return PRINT_UNKNOWN; |
4548 | break; | |
4549 | ||
4550 | case print_it_done: | |
4551 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4552 | relevant messages. */ |
e514a9d6 JM |
4553 | return PRINT_SRC_AND_LOC; |
4554 | break; | |
4555 | ||
4556 | case print_it_normal: | |
4f8d1dc6 | 4557 | { |
f431efe5 PA |
4558 | struct breakpoint *b = bs->breakpoint_at; |
4559 | ||
1a6a67de TJB |
4560 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4561 | which has since been deleted. */ | |
4562 | if (b == NULL) | |
4563 | return PRINT_UNKNOWN; | |
4564 | ||
348d480f PA |
4565 | /* Normal case. Call the breakpoint's print_it method. */ |
4566 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4567 | } |
348d480f | 4568 | break; |
3086aeae | 4569 | |
e514a9d6 | 4570 | default: |
8e65ff28 | 4571 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4572 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4573 | break; |
c906108c | 4574 | } |
c906108c SS |
4575 | } |
4576 | ||
edcc5120 TT |
4577 | /* A helper function that prints a shared library stopped event. */ |
4578 | ||
4579 | static void | |
4580 | print_solib_event (int is_catchpoint) | |
4581 | { | |
6fb16ce6 | 4582 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4583 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4584 | |
4585 | if (!is_catchpoint) | |
4586 | { | |
4587 | if (any_added || any_deleted) | |
112e8700 | 4588 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4589 | else |
112e8700 SM |
4590 | current_uiout->text (_("Stopped due to shared library event (no " |
4591 | "libraries added or removed)\n")); | |
edcc5120 TT |
4592 | } |
4593 | ||
112e8700 SM |
4594 | if (current_uiout->is_mi_like_p ()) |
4595 | current_uiout->field_string ("reason", | |
4596 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4597 | |
4598 | if (any_deleted) | |
4599 | { | |
112e8700 | 4600 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4601 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4602 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4603 | { |
6fb16ce6 SM |
4604 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4605 | ||
edcc5120 | 4606 | if (ix > 0) |
112e8700 SM |
4607 | current_uiout->text (" "); |
4608 | current_uiout->field_string ("library", name); | |
4609 | current_uiout->text ("\n"); | |
edcc5120 | 4610 | } |
edcc5120 TT |
4611 | } |
4612 | ||
4613 | if (any_added) | |
4614 | { | |
112e8700 | 4615 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4616 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4617 | bool first = true; |
52941706 | 4618 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4619 | { |
bcb430e4 | 4620 | if (!first) |
112e8700 | 4621 | current_uiout->text (" "); |
bcb430e4 | 4622 | first = false; |
112e8700 SM |
4623 | current_uiout->field_string ("library", iter->so_name); |
4624 | current_uiout->text ("\n"); | |
edcc5120 | 4625 | } |
edcc5120 TT |
4626 | } |
4627 | } | |
4628 | ||
e514a9d6 JM |
4629 | /* Print a message indicating what happened. This is called from |
4630 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4631 | list - a list of the eventpoints that caused this stop. KIND is |
4632 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4633 | routine calls the generic print routine for printing a message |
4634 | about reasons for stopping. This will print (for example) the | |
4635 | "Breakpoint n," part of the output. The return value of this | |
4636 | routine is one of: | |
c906108c | 4637 | |
4a64f543 | 4638 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4639 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4640 | code to print the location. An example is |
c5aa993b JM |
4641 | "Breakpoint 1, " which should be followed by |
4642 | the location. | |
917317f4 | 4643 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4644 | to also print the location part of the message. |
4645 | An example is the catch/throw messages, which | |
4a64f543 | 4646 | don't require a location appended to the end. |
917317f4 | 4647 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4648 | further info to be printed. */ |
c906108c | 4649 | |
917317f4 | 4650 | enum print_stop_action |
36dfb11c | 4651 | bpstat_print (bpstat bs, int kind) |
c906108c | 4652 | { |
f486487f | 4653 | enum print_stop_action val; |
c5aa993b | 4654 | |
c906108c | 4655 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4656 | (Currently all watchpoints go on the bpstat whether hit or not. |
4657 | That probably could (should) be changed, provided care is taken | |
c906108c | 4658 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4659 | for (; bs; bs = bs->next) |
4660 | { | |
4661 | val = print_bp_stop_message (bs); | |
4662 | if (val == PRINT_SRC_ONLY | |
4663 | || val == PRINT_SRC_AND_LOC | |
4664 | || val == PRINT_NOTHING) | |
4665 | return val; | |
4666 | } | |
c906108c | 4667 | |
36dfb11c TT |
4668 | /* If we had hit a shared library event breakpoint, |
4669 | print_bp_stop_message would print out this message. If we hit an | |
4670 | OS-level shared library event, do the same thing. */ | |
4671 | if (kind == TARGET_WAITKIND_LOADED) | |
4672 | { | |
edcc5120 | 4673 | print_solib_event (0); |
36dfb11c TT |
4674 | return PRINT_NOTHING; |
4675 | } | |
4676 | ||
e514a9d6 | 4677 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4678 | with and nothing was printed. */ |
917317f4 | 4679 | return PRINT_UNKNOWN; |
c906108c SS |
4680 | } |
4681 | ||
bf469271 | 4682 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4683 | |
bf469271 PA |
4684 | static bool |
4685 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4686 | { |
278cd55f | 4687 | struct value *mark = value_mark (); |
bf469271 | 4688 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4689 | |
c906108c | 4690 | value_free_to_mark (mark); |
bf469271 | 4691 | return res; |
c906108c SS |
4692 | } |
4693 | ||
5760d0ab | 4694 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4695 | |
04afa70c TT |
4696 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4697 | : next (NULL), | |
4698 | bp_location_at (bl), | |
4699 | breakpoint_at (bl->owner), | |
4700 | commands (NULL), | |
04afa70c TT |
4701 | print (0), |
4702 | stop (0), | |
4703 | print_it (print_it_normal) | |
c906108c | 4704 | { |
f431efe5 | 4705 | incref_bp_location (bl); |
04afa70c TT |
4706 | **bs_link_pointer = this; |
4707 | *bs_link_pointer = &next; | |
4708 | } | |
4709 | ||
4710 | bpstats::bpstats () | |
4711 | : next (NULL), | |
4712 | bp_location_at (NULL), | |
4713 | breakpoint_at (NULL), | |
4714 | commands (NULL), | |
04afa70c TT |
4715 | print (0), |
4716 | stop (0), | |
4717 | print_it (print_it_normal) | |
4718 | { | |
c906108c SS |
4719 | } |
4720 | \f | |
d983da9c DJ |
4721 | /* The target has stopped with waitstatus WS. Check if any hardware |
4722 | watchpoints have triggered, according to the target. */ | |
4723 | ||
4724 | int | |
4725 | watchpoints_triggered (struct target_waitstatus *ws) | |
4726 | { | |
57810aa7 | 4727 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4728 | CORE_ADDR addr; |
4729 | struct breakpoint *b; | |
4730 | ||
4731 | if (!stopped_by_watchpoint) | |
4732 | { | |
4733 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4734 | as not triggered. */ | |
4735 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4736 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4737 | { |
4738 | struct watchpoint *w = (struct watchpoint *) b; | |
4739 | ||
4740 | w->watchpoint_triggered = watch_triggered_no; | |
4741 | } | |
d983da9c DJ |
4742 | |
4743 | return 0; | |
4744 | } | |
4745 | ||
8b88a78e | 4746 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4747 | { |
4748 | /* We were stopped by a watchpoint, but we don't know where. | |
4749 | Mark all watchpoints as unknown. */ | |
4750 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4751 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4752 | { |
4753 | struct watchpoint *w = (struct watchpoint *) b; | |
4754 | ||
4755 | w->watchpoint_triggered = watch_triggered_unknown; | |
4756 | } | |
d983da9c | 4757 | |
3c4797ba | 4758 | return 1; |
d983da9c DJ |
4759 | } |
4760 | ||
4761 | /* The target could report the data address. Mark watchpoints | |
4762 | affected by this data address as triggered, and all others as not | |
4763 | triggered. */ | |
4764 | ||
4765 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4766 | if (is_hardware_watchpoint (b)) |
d983da9c | 4767 | { |
3a5c3e22 | 4768 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4769 | struct bp_location *loc; |
d983da9c | 4770 | |
3a5c3e22 | 4771 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4772 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4773 | { |
3a5c3e22 | 4774 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4775 | { |
3a5c3e22 PA |
4776 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4777 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4778 | |
4779 | if (newaddr == start) | |
4780 | { | |
3a5c3e22 | 4781 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4782 | break; |
4783 | } | |
4784 | } | |
4785 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4786 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4787 | addr, loc->address, |
4788 | loc->length)) | |
4789 | { | |
3a5c3e22 | 4790 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4791 | break; |
4792 | } | |
4793 | } | |
d983da9c DJ |
4794 | } |
4795 | ||
4796 | return 1; | |
4797 | } | |
4798 | ||
bf469271 PA |
4799 | /* Possible return values for watchpoint_check. */ |
4800 | enum wp_check_result | |
4801 | { | |
4802 | /* The watchpoint has been deleted. */ | |
4803 | WP_DELETED = 1, | |
4804 | ||
4805 | /* The value has changed. */ | |
4806 | WP_VALUE_CHANGED = 2, | |
4807 | ||
4808 | /* The value has not changed. */ | |
4809 | WP_VALUE_NOT_CHANGED = 3, | |
4810 | ||
4811 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4812 | WP_IGNORE = 4, | |
4813 | }; | |
c906108c SS |
4814 | |
4815 | #define BP_TEMPFLAG 1 | |
4816 | #define BP_HARDWAREFLAG 2 | |
4817 | ||
4a64f543 | 4818 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4819 | changed. */ |
553e4c11 | 4820 | |
bf469271 PA |
4821 | static wp_check_result |
4822 | watchpoint_check (bpstat bs) | |
c906108c | 4823 | { |
3a5c3e22 | 4824 | struct watchpoint *b; |
c906108c SS |
4825 | struct frame_info *fr; |
4826 | int within_current_scope; | |
4827 | ||
f431efe5 | 4828 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4829 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4830 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4831 | |
f6bc2008 PA |
4832 | /* If this is a local watchpoint, we only want to check if the |
4833 | watchpoint frame is in scope if the current thread is the thread | |
4834 | that was used to create the watchpoint. */ | |
4835 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4836 | return WP_IGNORE; |
f6bc2008 | 4837 | |
c906108c SS |
4838 | if (b->exp_valid_block == NULL) |
4839 | within_current_scope = 1; | |
4840 | else | |
4841 | { | |
edb3359d DJ |
4842 | struct frame_info *frame = get_current_frame (); |
4843 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4844 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4845 | ||
c9cf6e20 | 4846 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4847 | still in the function but the stack frame has already been |
4848 | invalidated. Since we can't rely on the values of local | |
4849 | variables after the stack has been destroyed, we are treating | |
4850 | the watchpoint in that state as `not changed' without further | |
4851 | checking. Don't mark watchpoints as changed if the current | |
4852 | frame is in an epilogue - even if they are in some other | |
4853 | frame, our view of the stack is likely to be wrong and | |
4854 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4855 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4856 | return WP_IGNORE; |
a0f49112 | 4857 | |
101dcfbe | 4858 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4859 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4860 | |
4861 | /* If we've gotten confused in the unwinder, we might have | |
4862 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4863 | if (within_current_scope) |
4864 | { | |
4865 | struct symbol *function; | |
4866 | ||
4867 | function = get_frame_function (fr); | |
4868 | if (function == NULL | |
4869 | || !contained_in (b->exp_valid_block, | |
4870 | SYMBOL_BLOCK_VALUE (function))) | |
4871 | within_current_scope = 0; | |
4872 | } | |
69fbadd5 | 4873 | |
edb3359d | 4874 | if (within_current_scope) |
c906108c SS |
4875 | /* If we end up stopping, the current frame will get selected |
4876 | in normal_stop. So this call to select_frame won't affect | |
4877 | the user. */ | |
0f7d239c | 4878 | select_frame (fr); |
c906108c | 4879 | } |
c5aa993b | 4880 | |
c906108c SS |
4881 | if (within_current_scope) |
4882 | { | |
4a64f543 MS |
4883 | /* We use value_{,free_to_}mark because it could be a *long* |
4884 | time before we return to the command level and call | |
4885 | free_all_values. We can't call free_all_values because we | |
4886 | might be in the middle of evaluating a function call. */ | |
c906108c | 4887 | |
0cf6dd15 | 4888 | int pc = 0; |
9c06b0b4 | 4889 | struct value *mark; |
fa4727a6 DJ |
4890 | struct value *new_val; |
4891 | ||
c1fc2657 | 4892 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4893 | /* Since we don't know the exact trigger address (from |
4894 | stopped_data_address), just tell the user we've triggered | |
4895 | a mask watchpoint. */ | |
4896 | return WP_VALUE_CHANGED; | |
4897 | ||
4898 | mark = value_mark (); | |
4d01a485 | 4899 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4900 | |
bb9d5f81 PP |
4901 | if (b->val_bitsize != 0) |
4902 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4903 | ||
4a64f543 MS |
4904 | /* We use value_equal_contents instead of value_equal because |
4905 | the latter coerces an array to a pointer, thus comparing just | |
4906 | the address of the array instead of its contents. This is | |
4907 | not what we want. */ | |
fa4727a6 | 4908 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4909 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4910 | new_val))) | |
c906108c | 4911 | { |
c906108c | 4912 | bs->old_val = b->val; |
850645cf | 4913 | b->val = release_value (new_val); |
fa4727a6 | 4914 | b->val_valid = 1; |
850645cf TT |
4915 | if (new_val != NULL) |
4916 | value_free_to_mark (mark); | |
c906108c SS |
4917 | return WP_VALUE_CHANGED; |
4918 | } | |
4919 | else | |
4920 | { | |
60e1c644 | 4921 | /* Nothing changed. */ |
c906108c | 4922 | value_free_to_mark (mark); |
c906108c SS |
4923 | return WP_VALUE_NOT_CHANGED; |
4924 | } | |
4925 | } | |
4926 | else | |
4927 | { | |
4928 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4929 | if we temporarily ignored the watchpoint, then when |
4930 | we reenter the block in which it is valid it contains | |
4931 | garbage (in the case of a function, it may have two | |
4932 | garbage values, one before and one after the prologue). | |
4933 | So we can't even detect the first assignment to it and | |
4934 | watch after that (since the garbage may or may not equal | |
4935 | the first value assigned). */ | |
348d480f PA |
4936 | /* We print all the stop information in |
4937 | breakpoint_ops->print_it, but in this case, by the time we | |
4938 | call breakpoint_ops->print_it this bp will be deleted | |
4939 | already. So we have no choice but print the information | |
4940 | here. */ | |
468afe6c | 4941 | |
0e454242 | 4942 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4943 | { |
4944 | struct ui_out *uiout = current_uiout; | |
4945 | ||
112e8700 SM |
4946 | if (uiout->is_mi_like_p ()) |
4947 | uiout->field_string | |
4948 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4949 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4950 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4951 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4952 | "which its expression is valid.\n"); |
4953 | } | |
4ce44c66 | 4954 | |
cdac0397 | 4955 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4956 | b->commands = NULL; |
d0fb5eae | 4957 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4958 | |
4959 | return WP_DELETED; | |
4960 | } | |
4961 | } | |
4962 | ||
18a18393 | 4963 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4964 | breakpoint location BL. This function does not check if we should |
4965 | stop, only if BL explains the stop. */ | |
4966 | ||
18a18393 | 4967 | static int |
6c95b8df | 4968 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4969 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4970 | const struct target_waitstatus *ws) |
18a18393 VP |
4971 | { |
4972 | struct breakpoint *b = bl->owner; | |
4973 | ||
348d480f | 4974 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4975 | gdb_assert (b != NULL); |
4976 | ||
bd522513 | 4977 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4978 | } |
4979 | ||
3a5c3e22 PA |
4980 | /* Determine if the watched values have actually changed, and we |
4981 | should stop. If not, set BS->stop to 0. */ | |
4982 | ||
18a18393 VP |
4983 | static void |
4984 | bpstat_check_watchpoint (bpstat bs) | |
4985 | { | |
2bdf28a0 | 4986 | const struct bp_location *bl; |
3a5c3e22 | 4987 | struct watchpoint *b; |
2bdf28a0 JK |
4988 | |
4989 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4990 | bl = bs->bp_location_at; |
2bdf28a0 | 4991 | gdb_assert (bl != NULL); |
3a5c3e22 | 4992 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4993 | gdb_assert (b != NULL); |
18a18393 | 4994 | |
18a18393 | 4995 | { |
18a18393 VP |
4996 | int must_check_value = 0; |
4997 | ||
c1fc2657 | 4998 | if (b->type == bp_watchpoint) |
18a18393 VP |
4999 | /* For a software watchpoint, we must always check the |
5000 | watched value. */ | |
5001 | must_check_value = 1; | |
5002 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5003 | /* We have a hardware watchpoint (read, write, or access) | |
5004 | and the target earlier reported an address watched by | |
5005 | this watchpoint. */ | |
5006 | must_check_value = 1; | |
5007 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5008 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5009 | /* We were stopped by a hardware watchpoint, but the target could |
5010 | not report the data address. We must check the watchpoint's | |
5011 | value. Access and read watchpoints are out of luck; without | |
5012 | a data address, we can't figure it out. */ | |
5013 | must_check_value = 1; | |
3a5c3e22 | 5014 | |
18a18393 VP |
5015 | if (must_check_value) |
5016 | { | |
bf469271 PA |
5017 | wp_check_result e; |
5018 | ||
5019 | TRY | |
5020 | { | |
5021 | e = watchpoint_check (bs); | |
5022 | } | |
5023 | CATCH (ex, RETURN_MASK_ALL) | |
5024 | { | |
5025 | exception_fprintf (gdb_stderr, ex, | |
5026 | "Error evaluating expression " | |
5027 | "for watchpoint %d\n", | |
5028 | b->number); | |
5029 | ||
5030 | SWITCH_THRU_ALL_UIS () | |
5031 | { | |
5032 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5033 | b->number); | |
5034 | } | |
5035 | watchpoint_del_at_next_stop (b); | |
5036 | e = WP_DELETED; | |
5037 | } | |
5038 | END_CATCH | |
5039 | ||
18a18393 VP |
5040 | switch (e) |
5041 | { | |
5042 | case WP_DELETED: | |
5043 | /* We've already printed what needs to be printed. */ | |
5044 | bs->print_it = print_it_done; | |
5045 | /* Stop. */ | |
5046 | break; | |
60e1c644 PA |
5047 | case WP_IGNORE: |
5048 | bs->print_it = print_it_noop; | |
5049 | bs->stop = 0; | |
5050 | break; | |
18a18393 | 5051 | case WP_VALUE_CHANGED: |
c1fc2657 | 5052 | if (b->type == bp_read_watchpoint) |
18a18393 | 5053 | { |
85d721b8 PA |
5054 | /* There are two cases to consider here: |
5055 | ||
4a64f543 | 5056 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5057 | In that case, trust the target, and always report |
5058 | the watchpoint hit to the user. Even though | |
5059 | reads don't cause value changes, the value may | |
5060 | have changed since the last time it was read, and | |
5061 | since we're not trapping writes, we will not see | |
5062 | those, and as such we should ignore our notion of | |
5063 | old value. | |
5064 | ||
4a64f543 | 5065 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5066 | reads and writes. There are two ways this may |
5067 | happen: | |
5068 | ||
4a64f543 | 5069 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5070 | reads only, but can break on accesses (reads or |
5071 | writes), such as e.g., x86. We detect this case | |
5072 | at the time we try to insert read watchpoints. | |
5073 | ||
4a64f543 | 5074 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5075 | watchpoints, but, the user set an access or write |
5076 | watchpoint watching the same memory as this read | |
5077 | watchpoint. | |
5078 | ||
5079 | If we're watching memory writes as well as reads, | |
5080 | ignore watchpoint hits when we find that the | |
5081 | value hasn't changed, as reads don't cause | |
5082 | changes. This still gives false positives when | |
5083 | the program writes the same value to memory as | |
5084 | what there was already in memory (we will confuse | |
5085 | it for a read), but it's much better than | |
5086 | nothing. */ | |
5087 | ||
5088 | int other_write_watchpoint = 0; | |
5089 | ||
5090 | if (bl->watchpoint_type == hw_read) | |
5091 | { | |
5092 | struct breakpoint *other_b; | |
5093 | ||
5094 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5095 | if (other_b->type == bp_hardware_watchpoint |
5096 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5097 | { |
3a5c3e22 PA |
5098 | struct watchpoint *other_w = |
5099 | (struct watchpoint *) other_b; | |
5100 | ||
5101 | if (other_w->watchpoint_triggered | |
5102 | == watch_triggered_yes) | |
5103 | { | |
5104 | other_write_watchpoint = 1; | |
5105 | break; | |
5106 | } | |
85d721b8 PA |
5107 | } |
5108 | } | |
5109 | ||
5110 | if (other_write_watchpoint | |
5111 | || bl->watchpoint_type == hw_access) | |
5112 | { | |
5113 | /* We're watching the same memory for writes, | |
5114 | and the value changed since the last time we | |
5115 | updated it, so this trap must be for a write. | |
5116 | Ignore it. */ | |
5117 | bs->print_it = print_it_noop; | |
5118 | bs->stop = 0; | |
5119 | } | |
18a18393 VP |
5120 | } |
5121 | break; | |
5122 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5123 | if (b->type == bp_hardware_watchpoint |
5124 | || b->type == bp_watchpoint) | |
18a18393 VP |
5125 | { |
5126 | /* Don't stop: write watchpoints shouldn't fire if | |
5127 | the value hasn't changed. */ | |
5128 | bs->print_it = print_it_noop; | |
5129 | bs->stop = 0; | |
5130 | } | |
5131 | /* Stop. */ | |
5132 | break; | |
5133 | default: | |
5134 | /* Can't happen. */ | |
18a18393 VP |
5135 | break; |
5136 | } | |
5137 | } | |
5138 | else /* must_check_value == 0 */ | |
5139 | { | |
5140 | /* This is a case where some watchpoint(s) triggered, but | |
5141 | not at the address of this watchpoint, or else no | |
5142 | watchpoint triggered after all. So don't print | |
5143 | anything for this watchpoint. */ | |
5144 | bs->print_it = print_it_noop; | |
5145 | bs->stop = 0; | |
5146 | } | |
5147 | } | |
5148 | } | |
5149 | ||
7d4df6a4 DE |
5150 | /* For breakpoints that are currently marked as telling gdb to stop, |
5151 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5152 | of breakpoint referred to by BS. If we should not stop for this |
5153 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5154 | |
18a18393 | 5155 | static void |
00431a78 | 5156 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5157 | { |
2bdf28a0 JK |
5158 | const struct bp_location *bl; |
5159 | struct breakpoint *b; | |
bf469271 PA |
5160 | /* Assume stop. */ |
5161 | bool condition_result = true; | |
7d4df6a4 DE |
5162 | struct expression *cond; |
5163 | ||
5164 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5165 | |
5166 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5167 | bl = bs->bp_location_at; |
2bdf28a0 | 5168 | gdb_assert (bl != NULL); |
f431efe5 | 5169 | b = bs->breakpoint_at; |
2bdf28a0 | 5170 | gdb_assert (b != NULL); |
18a18393 | 5171 | |
b775012e LM |
5172 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5173 | need to do so again since GDB does not know if we stopped due to a | |
5174 | breakpoint or a single step breakpoint. */ | |
5175 | ||
18a18393 | 5176 | if (frame_id_p (b->frame_id) |
edb3359d | 5177 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5178 | { |
7d4df6a4 DE |
5179 | bs->stop = 0; |
5180 | return; | |
5181 | } | |
60e1c644 | 5182 | |
12ab52e9 PA |
5183 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5184 | evaluating the condition if this isn't the specified | |
5185 | thread/task. */ | |
00431a78 PA |
5186 | if ((b->thread != -1 && b->thread != thread->global_num) |
5187 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5188 | { |
5189 | bs->stop = 0; | |
5190 | return; | |
5191 | } | |
5192 | ||
6dddc817 DE |
5193 | /* Evaluate extension language breakpoints that have a "stop" method |
5194 | implemented. */ | |
5195 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5196 | |
7d4df6a4 DE |
5197 | if (is_watchpoint (b)) |
5198 | { | |
5199 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5200 | |
4d01a485 | 5201 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5202 | } |
5203 | else | |
4d01a485 | 5204 | cond = bl->cond.get (); |
60e1c644 | 5205 | |
7d4df6a4 DE |
5206 | if (cond && b->disposition != disp_del_at_next_stop) |
5207 | { | |
5208 | int within_current_scope = 1; | |
5209 | struct watchpoint * w; | |
60e1c644 | 5210 | |
7d4df6a4 DE |
5211 | /* We use value_mark and value_free_to_mark because it could |
5212 | be a long time before we return to the command level and | |
5213 | call free_all_values. We can't call free_all_values | |
5214 | because we might be in the middle of evaluating a | |
5215 | function call. */ | |
5216 | struct value *mark = value_mark (); | |
5217 | ||
5218 | if (is_watchpoint (b)) | |
5219 | w = (struct watchpoint *) b; | |
5220 | else | |
5221 | w = NULL; | |
5222 | ||
5223 | /* Need to select the frame, with all that implies so that | |
5224 | the conditions will have the right context. Because we | |
5225 | use the frame, we will not see an inlined function's | |
5226 | variables when we arrive at a breakpoint at the start | |
5227 | of the inlined function; the current frame will be the | |
5228 | call site. */ | |
5229 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5230 | select_frame (get_current_frame ()); | |
5231 | else | |
18a18393 | 5232 | { |
7d4df6a4 DE |
5233 | struct frame_info *frame; |
5234 | ||
5235 | /* For local watchpoint expressions, which particular | |
5236 | instance of a local is being watched matters, so we | |
5237 | keep track of the frame to evaluate the expression | |
5238 | in. To evaluate the condition however, it doesn't | |
5239 | really matter which instantiation of the function | |
5240 | where the condition makes sense triggers the | |
5241 | watchpoint. This allows an expression like "watch | |
5242 | global if q > 10" set in `func', catch writes to | |
5243 | global on all threads that call `func', or catch | |
5244 | writes on all recursive calls of `func' by a single | |
5245 | thread. We simply always evaluate the condition in | |
5246 | the innermost frame that's executing where it makes | |
5247 | sense to evaluate the condition. It seems | |
5248 | intuitive. */ | |
5249 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5250 | if (frame != NULL) | |
5251 | select_frame (frame); | |
5252 | else | |
5253 | within_current_scope = 0; | |
18a18393 | 5254 | } |
7d4df6a4 | 5255 | if (within_current_scope) |
bf469271 PA |
5256 | { |
5257 | TRY | |
5258 | { | |
5259 | condition_result = breakpoint_cond_eval (cond); | |
5260 | } | |
5261 | CATCH (ex, RETURN_MASK_ALL) | |
5262 | { | |
5263 | exception_fprintf (gdb_stderr, ex, | |
5264 | "Error in testing breakpoint condition:\n"); | |
5265 | } | |
5266 | END_CATCH | |
5267 | } | |
7d4df6a4 | 5268 | else |
18a18393 | 5269 | { |
7d4df6a4 DE |
5270 | warning (_("Watchpoint condition cannot be tested " |
5271 | "in the current scope")); | |
5272 | /* If we failed to set the right context for this | |
5273 | watchpoint, unconditionally report it. */ | |
18a18393 | 5274 | } |
7d4df6a4 DE |
5275 | /* FIXME-someday, should give breakpoint #. */ |
5276 | value_free_to_mark (mark); | |
18a18393 | 5277 | } |
7d4df6a4 | 5278 | |
bf469271 | 5279 | if (cond && !condition_result) |
7d4df6a4 DE |
5280 | { |
5281 | bs->stop = 0; | |
5282 | } | |
7d4df6a4 DE |
5283 | else if (b->ignore_count > 0) |
5284 | { | |
5285 | b->ignore_count--; | |
5286 | bs->stop = 0; | |
5287 | /* Increase the hit count even though we don't stop. */ | |
5288 | ++(b->hit_count); | |
76727919 | 5289 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5290 | } |
18a18393 VP |
5291 | } |
5292 | ||
1cf4d951 PA |
5293 | /* Returns true if we need to track moribund locations of LOC's type |
5294 | on the current target. */ | |
5295 | ||
5296 | static int | |
5297 | need_moribund_for_location_type (struct bp_location *loc) | |
5298 | { | |
5299 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5300 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5301 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5302 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5303 | } | |
5304 | ||
ddfe970e | 5305 | /* See breakpoint.h. */ |
c906108c SS |
5306 | |
5307 | bpstat | |
ddfe970e | 5308 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5309 | const struct target_waitstatus *ws) |
c906108c | 5310 | { |
ddfe970e | 5311 | struct breakpoint *b; |
5760d0ab | 5312 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5313 | |
429374b8 JK |
5314 | ALL_BREAKPOINTS (b) |
5315 | { | |
1a853c52 | 5316 | if (!breakpoint_enabled (b)) |
429374b8 | 5317 | continue; |
a5606eee | 5318 | |
ddfe970e | 5319 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5320 | { |
4a64f543 MS |
5321 | /* For hardware watchpoints, we look only at the first |
5322 | location. The watchpoint_check function will work on the | |
5323 | entire expression, not the individual locations. For | |
5324 | read watchpoints, the watchpoints_triggered function has | |
5325 | checked all locations already. */ | |
429374b8 JK |
5326 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5327 | break; | |
18a18393 | 5328 | |
f6592439 | 5329 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5330 | continue; |
c5aa993b | 5331 | |
09ac7c10 | 5332 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5333 | continue; |
c5aa993b | 5334 | |
4a64f543 MS |
5335 | /* Come here if it's a watchpoint, or if the break address |
5336 | matches. */ | |
c5aa993b | 5337 | |
ddfe970e KS |
5338 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5339 | explain stop. */ | |
c5aa993b | 5340 | |
f431efe5 PA |
5341 | /* Assume we stop. Should we find a watchpoint that is not |
5342 | actually triggered, or if the condition of the breakpoint | |
5343 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5344 | bs->stop = 1; |
5345 | bs->print = 1; | |
d983da9c | 5346 | |
f431efe5 PA |
5347 | /* If this is a scope breakpoint, mark the associated |
5348 | watchpoint as triggered so that we will handle the | |
5349 | out-of-scope event. We'll get to the watchpoint next | |
5350 | iteration. */ | |
d0fb5eae | 5351 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5352 | { |
5353 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5354 | ||
5355 | w->watchpoint_triggered = watch_triggered_yes; | |
5356 | } | |
f431efe5 PA |
5357 | } |
5358 | } | |
5359 | ||
7c16b83e | 5360 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5361 | if (!target_supports_stopped_by_sw_breakpoint () |
5362 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5363 | { |
1123588c | 5364 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5365 | { |
1cf4d951 PA |
5366 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5367 | && need_moribund_for_location_type (loc)) | |
5368 | { | |
ddfe970e | 5369 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5370 | /* For hits of moribund locations, we should just proceed. */ |
5371 | bs->stop = 0; | |
5372 | bs->print = 0; | |
5373 | bs->print_it = print_it_noop; | |
5374 | } | |
f431efe5 PA |
5375 | } |
5376 | } | |
5377 | ||
ddfe970e KS |
5378 | return bs_head; |
5379 | } | |
5380 | ||
5381 | /* See breakpoint.h. */ | |
5382 | ||
5383 | bpstat | |
5384 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5385 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5386 | const struct target_waitstatus *ws, |
5387 | bpstat stop_chain) | |
5388 | { | |
5389 | struct breakpoint *b = NULL; | |
5390 | /* First item of allocated bpstat's. */ | |
5391 | bpstat bs_head = stop_chain; | |
5392 | bpstat bs; | |
5393 | int need_remove_insert; | |
5394 | int removed_any; | |
5395 | ||
5396 | /* First, build the bpstat chain with locations that explain a | |
5397 | target stop, while being careful to not set the target running, | |
5398 | as that may invalidate locations (in particular watchpoint | |
5399 | locations are recreated). Resuming will happen here with | |
5400 | breakpoint conditions or watchpoint expressions that include | |
5401 | inferior function calls. */ | |
5402 | if (bs_head == NULL) | |
5403 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5404 | ||
edcc5120 TT |
5405 | /* A bit of special processing for shlib breakpoints. We need to |
5406 | process solib loading here, so that the lists of loaded and | |
5407 | unloaded libraries are correct before we handle "catch load" and | |
5408 | "catch unload". */ | |
5409 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5410 | { | |
5d268276 | 5411 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5412 | { |
5413 | handle_solib_event (); | |
5414 | break; | |
5415 | } | |
5416 | } | |
5417 | ||
f431efe5 PA |
5418 | /* Now go through the locations that caused the target to stop, and |
5419 | check whether we're interested in reporting this stop to higher | |
5420 | layers, or whether we should resume the target transparently. */ | |
5421 | ||
5422 | removed_any = 0; | |
5423 | ||
5760d0ab | 5424 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5425 | { |
5426 | if (!bs->stop) | |
5427 | continue; | |
5428 | ||
f431efe5 | 5429 | b = bs->breakpoint_at; |
348d480f PA |
5430 | b->ops->check_status (bs); |
5431 | if (bs->stop) | |
28010a5d | 5432 | { |
00431a78 | 5433 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5434 | |
429374b8 JK |
5435 | if (bs->stop) |
5436 | { | |
5437 | ++(b->hit_count); | |
76727919 | 5438 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5439 | |
4a64f543 | 5440 | /* We will stop here. */ |
429374b8 JK |
5441 | if (b->disposition == disp_disable) |
5442 | { | |
816338b5 | 5443 | --(b->enable_count); |
1a853c52 | 5444 | if (b->enable_count <= 0) |
429374b8 | 5445 | b->enable_state = bp_disabled; |
f431efe5 | 5446 | removed_any = 1; |
429374b8 JK |
5447 | } |
5448 | if (b->silent) | |
5449 | bs->print = 0; | |
5450 | bs->commands = b->commands; | |
abf85f46 | 5451 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5452 | ? bs->commands.get () : NULL)) |
abf85f46 | 5453 | bs->print = 0; |
9d6e6e84 HZ |
5454 | |
5455 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5456 | } |
5457 | ||
348d480f | 5458 | } |
a9b3a50f PA |
5459 | |
5460 | /* Print nothing for this entry if we don't stop or don't | |
5461 | print. */ | |
5462 | if (!bs->stop || !bs->print) | |
5463 | bs->print_it = print_it_noop; | |
429374b8 | 5464 | } |
876fa593 | 5465 | |
d983da9c DJ |
5466 | /* If we aren't stopping, the value of some hardware watchpoint may |
5467 | not have changed, but the intermediate memory locations we are | |
5468 | watching may have. Don't bother if we're stopping; this will get | |
5469 | done later. */ | |
d832cb68 | 5470 | need_remove_insert = 0; |
5760d0ab JK |
5471 | if (! bpstat_causes_stop (bs_head)) |
5472 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5473 | if (!bs->stop |
f431efe5 PA |
5474 | && bs->breakpoint_at |
5475 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5476 | { |
3a5c3e22 PA |
5477 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5478 | ||
5479 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5480 | need_remove_insert = 1; |
d983da9c DJ |
5481 | } |
5482 | ||
d832cb68 | 5483 | if (need_remove_insert) |
44702360 | 5484 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5485 | else if (removed_any) |
44702360 | 5486 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5487 | |
5760d0ab | 5488 | return bs_head; |
c906108c | 5489 | } |
628fe4e4 JK |
5490 | |
5491 | static void | |
5492 | handle_jit_event (void) | |
5493 | { | |
5494 | struct frame_info *frame; | |
5495 | struct gdbarch *gdbarch; | |
5496 | ||
243a9253 PA |
5497 | if (debug_infrun) |
5498 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5499 | ||
628fe4e4 JK |
5500 | /* Switch terminal for any messages produced by |
5501 | breakpoint_re_set. */ | |
223ffa71 | 5502 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5503 | |
5504 | frame = get_current_frame (); | |
5505 | gdbarch = get_frame_arch (frame); | |
5506 | ||
5507 | jit_event_handler (gdbarch); | |
5508 | ||
223ffa71 | 5509 | target_terminal::inferior (); |
628fe4e4 JK |
5510 | } |
5511 | ||
5512 | /* Prepare WHAT final decision for infrun. */ | |
5513 | ||
5514 | /* Decide what infrun needs to do with this bpstat. */ | |
5515 | ||
c906108c | 5516 | struct bpstat_what |
0e30163f | 5517 | bpstat_what (bpstat bs_head) |
c906108c | 5518 | { |
c906108c | 5519 | struct bpstat_what retval; |
0e30163f | 5520 | bpstat bs; |
c906108c | 5521 | |
628fe4e4 | 5522 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5523 | retval.call_dummy = STOP_NONE; |
186c406b | 5524 | retval.is_longjmp = 0; |
628fe4e4 | 5525 | |
0e30163f | 5526 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5527 | { |
628fe4e4 JK |
5528 | /* Extract this BS's action. After processing each BS, we check |
5529 | if its action overrides all we've seem so far. */ | |
5530 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5531 | enum bptype bptype; | |
5532 | ||
c906108c | 5533 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5534 | { |
5535 | /* I suspect this can happen if it was a momentary | |
5536 | breakpoint which has since been deleted. */ | |
5537 | bptype = bp_none; | |
5538 | } | |
20874c92 | 5539 | else |
f431efe5 | 5540 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5541 | |
5542 | switch (bptype) | |
c906108c SS |
5543 | { |
5544 | case bp_none: | |
628fe4e4 | 5545 | break; |
c906108c SS |
5546 | case bp_breakpoint: |
5547 | case bp_hardware_breakpoint: | |
7c16b83e | 5548 | case bp_single_step: |
c906108c SS |
5549 | case bp_until: |
5550 | case bp_finish: | |
a9b3a50f | 5551 | case bp_shlib_event: |
c906108c SS |
5552 | if (bs->stop) |
5553 | { | |
5554 | if (bs->print) | |
628fe4e4 | 5555 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5556 | else |
628fe4e4 | 5557 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5558 | } |
5559 | else | |
628fe4e4 | 5560 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5561 | break; |
5562 | case bp_watchpoint: | |
5563 | case bp_hardware_watchpoint: | |
5564 | case bp_read_watchpoint: | |
5565 | case bp_access_watchpoint: | |
5566 | if (bs->stop) | |
5567 | { | |
5568 | if (bs->print) | |
628fe4e4 | 5569 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5570 | else |
628fe4e4 | 5571 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5572 | } |
5573 | else | |
628fe4e4 JK |
5574 | { |
5575 | /* There was a watchpoint, but we're not stopping. | |
5576 | This requires no further action. */ | |
5577 | } | |
c906108c SS |
5578 | break; |
5579 | case bp_longjmp: | |
e2e4d78b | 5580 | case bp_longjmp_call_dummy: |
186c406b | 5581 | case bp_exception: |
0a39bb32 PA |
5582 | if (bs->stop) |
5583 | { | |
5584 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5585 | retval.is_longjmp = bptype != bp_exception; | |
5586 | } | |
5587 | else | |
5588 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5589 | break; |
5590 | case bp_longjmp_resume: | |
186c406b | 5591 | case bp_exception_resume: |
0a39bb32 PA |
5592 | if (bs->stop) |
5593 | { | |
5594 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5595 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5596 | } | |
5597 | else | |
5598 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5599 | break; |
5600 | case bp_step_resume: | |
5601 | if (bs->stop) | |
628fe4e4 JK |
5602 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5603 | else | |
c906108c | 5604 | { |
628fe4e4 JK |
5605 | /* It is for the wrong frame. */ |
5606 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5607 | } |
c906108c | 5608 | break; |
2c03e5be PA |
5609 | case bp_hp_step_resume: |
5610 | if (bs->stop) | |
5611 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5612 | else | |
5613 | { | |
5614 | /* It is for the wrong frame. */ | |
5615 | this_action = BPSTAT_WHAT_SINGLE; | |
5616 | } | |
5617 | break; | |
c906108c | 5618 | case bp_watchpoint_scope: |
c4093a6a | 5619 | case bp_thread_event: |
1900040c | 5620 | case bp_overlay_event: |
0fd8e87f | 5621 | case bp_longjmp_master: |
aa7d318d | 5622 | case bp_std_terminate_master: |
186c406b | 5623 | case bp_exception_master: |
628fe4e4 | 5624 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5625 | break; |
ce78b96d | 5626 | case bp_catchpoint: |
c5aa993b JM |
5627 | if (bs->stop) |
5628 | { | |
5629 | if (bs->print) | |
628fe4e4 | 5630 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5631 | else |
628fe4e4 | 5632 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5633 | } |
5634 | else | |
628fe4e4 JK |
5635 | { |
5636 | /* There was a catchpoint, but we're not stopping. | |
5637 | This requires no further action. */ | |
5638 | } | |
5639 | break; | |
628fe4e4 | 5640 | case bp_jit_event: |
628fe4e4 | 5641 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5642 | break; |
c906108c | 5643 | case bp_call_dummy: |
53a5351d JM |
5644 | /* Make sure the action is stop (silent or noisy), |
5645 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5646 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5647 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5648 | break; |
5649 | case bp_std_terminate: | |
5650 | /* Make sure the action is stop (silent or noisy), | |
5651 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5652 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5653 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5654 | break; |
1042e4c0 | 5655 | case bp_tracepoint: |
7a697b8d | 5656 | case bp_fast_tracepoint: |
0fb4aa4b | 5657 | case bp_static_tracepoint: |
1042e4c0 SS |
5658 | /* Tracepoint hits should not be reported back to GDB, and |
5659 | if one got through somehow, it should have been filtered | |
5660 | out already. */ | |
5661 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5662 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5663 | break; |
5664 | case bp_gnu_ifunc_resolver: | |
5665 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5666 | this_action = BPSTAT_WHAT_SINGLE; | |
5667 | break; | |
5668 | case bp_gnu_ifunc_resolver_return: | |
5669 | /* The breakpoint will be removed, execution will restart from the | |
5670 | PC of the former breakpoint. */ | |
5671 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5672 | break; | |
e7e0cddf SS |
5673 | |
5674 | case bp_dprintf: | |
a11cfd87 HZ |
5675 | if (bs->stop) |
5676 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5677 | else | |
5678 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5679 | break; |
5680 | ||
628fe4e4 JK |
5681 | default: |
5682 | internal_error (__FILE__, __LINE__, | |
5683 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5684 | } |
628fe4e4 | 5685 | |
325fac50 | 5686 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5687 | } |
628fe4e4 | 5688 | |
243a9253 PA |
5689 | return retval; |
5690 | } | |
628fe4e4 | 5691 | |
243a9253 PA |
5692 | void |
5693 | bpstat_run_callbacks (bpstat bs_head) | |
5694 | { | |
5695 | bpstat bs; | |
628fe4e4 | 5696 | |
0e30163f JK |
5697 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5698 | { | |
5699 | struct breakpoint *b = bs->breakpoint_at; | |
5700 | ||
5701 | if (b == NULL) | |
5702 | continue; | |
5703 | switch (b->type) | |
5704 | { | |
243a9253 PA |
5705 | case bp_jit_event: |
5706 | handle_jit_event (); | |
5707 | break; | |
0e30163f JK |
5708 | case bp_gnu_ifunc_resolver: |
5709 | gnu_ifunc_resolver_stop (b); | |
5710 | break; | |
5711 | case bp_gnu_ifunc_resolver_return: | |
5712 | gnu_ifunc_resolver_return_stop (b); | |
5713 | break; | |
5714 | } | |
5715 | } | |
c906108c SS |
5716 | } |
5717 | ||
5718 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5719 | without hardware support). This isn't related to a specific bpstat, | |
5720 | just to things like whether watchpoints are set. */ | |
5721 | ||
c5aa993b | 5722 | int |
fba45db2 | 5723 | bpstat_should_step (void) |
c906108c SS |
5724 | { |
5725 | struct breakpoint *b; | |
cc59ec59 | 5726 | |
c906108c | 5727 | ALL_BREAKPOINTS (b) |
717a8278 | 5728 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5729 | return 1; |
c906108c SS |
5730 | return 0; |
5731 | } | |
5732 | ||
67822962 PA |
5733 | int |
5734 | bpstat_causes_stop (bpstat bs) | |
5735 | { | |
5736 | for (; bs != NULL; bs = bs->next) | |
5737 | if (bs->stop) | |
5738 | return 1; | |
5739 | ||
5740 | return 0; | |
5741 | } | |
5742 | ||
c906108c | 5743 | \f |
c5aa993b | 5744 | |
170b53b2 UW |
5745 | /* Compute a string of spaces suitable to indent the next line |
5746 | so it starts at the position corresponding to the table column | |
5747 | named COL_NAME in the currently active table of UIOUT. */ | |
5748 | ||
5749 | static char * | |
5750 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5751 | { | |
5752 | static char wrap_indent[80]; | |
5753 | int i, total_width, width, align; | |
c5209615 | 5754 | const char *text; |
170b53b2 UW |
5755 | |
5756 | total_width = 0; | |
112e8700 | 5757 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5758 | { |
5759 | if (strcmp (text, col_name) == 0) | |
5760 | { | |
5761 | gdb_assert (total_width < sizeof wrap_indent); | |
5762 | memset (wrap_indent, ' ', total_width); | |
5763 | wrap_indent[total_width] = 0; | |
5764 | ||
5765 | return wrap_indent; | |
5766 | } | |
5767 | ||
5768 | total_width += width + 1; | |
5769 | } | |
5770 | ||
5771 | return NULL; | |
5772 | } | |
5773 | ||
b775012e LM |
5774 | /* Determine if the locations of this breakpoint will have their conditions |
5775 | evaluated by the target, host or a mix of both. Returns the following: | |
5776 | ||
5777 | "host": Host evals condition. | |
5778 | "host or target": Host or Target evals condition. | |
5779 | "target": Target evals condition. | |
5780 | */ | |
5781 | ||
5782 | static const char * | |
5783 | bp_condition_evaluator (struct breakpoint *b) | |
5784 | { | |
5785 | struct bp_location *bl; | |
5786 | char host_evals = 0; | |
5787 | char target_evals = 0; | |
5788 | ||
5789 | if (!b) | |
5790 | return NULL; | |
5791 | ||
5792 | if (!is_breakpoint (b)) | |
5793 | return NULL; | |
5794 | ||
5795 | if (gdb_evaluates_breakpoint_condition_p () | |
5796 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5797 | return condition_evaluation_host; | |
5798 | ||
5799 | for (bl = b->loc; bl; bl = bl->next) | |
5800 | { | |
5801 | if (bl->cond_bytecode) | |
5802 | target_evals++; | |
5803 | else | |
5804 | host_evals++; | |
5805 | } | |
5806 | ||
5807 | if (host_evals && target_evals) | |
5808 | return condition_evaluation_both; | |
5809 | else if (target_evals) | |
5810 | return condition_evaluation_target; | |
5811 | else | |
5812 | return condition_evaluation_host; | |
5813 | } | |
5814 | ||
5815 | /* Determine the breakpoint location's condition evaluator. This is | |
5816 | similar to bp_condition_evaluator, but for locations. */ | |
5817 | ||
5818 | static const char * | |
5819 | bp_location_condition_evaluator (struct bp_location *bl) | |
5820 | { | |
5821 | if (bl && !is_breakpoint (bl->owner)) | |
5822 | return NULL; | |
5823 | ||
5824 | if (gdb_evaluates_breakpoint_condition_p () | |
5825 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5826 | return condition_evaluation_host; | |
5827 | ||
5828 | if (bl && bl->cond_bytecode) | |
5829 | return condition_evaluation_target; | |
5830 | else | |
5831 | return condition_evaluation_host; | |
5832 | } | |
5833 | ||
859825b8 JK |
5834 | /* Print the LOC location out of the list of B->LOC locations. */ |
5835 | ||
170b53b2 UW |
5836 | static void |
5837 | print_breakpoint_location (struct breakpoint *b, | |
5838 | struct bp_location *loc) | |
0d381245 | 5839 | { |
79a45e25 | 5840 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5841 | |
5842 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5843 | |
859825b8 JK |
5844 | if (loc != NULL && loc->shlib_disabled) |
5845 | loc = NULL; | |
5846 | ||
6c95b8df PA |
5847 | if (loc != NULL) |
5848 | set_current_program_space (loc->pspace); | |
5849 | ||
56435ebe | 5850 | if (b->display_canonical) |
d28cd78a | 5851 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5852 | else if (loc && loc->symtab) |
0d381245 | 5853 | { |
4a27f119 KS |
5854 | const struct symbol *sym = loc->symbol; |
5855 | ||
0d381245 VP |
5856 | if (sym) |
5857 | { | |
112e8700 | 5858 | uiout->text ("in "); |
cbe56571 TT |
5859 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
5860 | ui_out_style_kind::FUNCTION); | |
112e8700 SM |
5861 | uiout->text (" "); |
5862 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5863 | uiout->text ("at "); | |
0d381245 | 5864 | } |
112e8700 | 5865 | uiout->field_string ("file", |
cbe56571 TT |
5866 | symtab_to_filename_for_display (loc->symtab), |
5867 | ui_out_style_kind::FILE); | |
112e8700 | 5868 | uiout->text (":"); |
05cba821 | 5869 | |
112e8700 SM |
5870 | if (uiout->is_mi_like_p ()) |
5871 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5872 | |
112e8700 | 5873 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5874 | } |
859825b8 | 5875 | else if (loc) |
0d381245 | 5876 | { |
d7e74731 | 5877 | string_file stb; |
170b53b2 | 5878 | |
d7e74731 | 5879 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5880 | demangle, ""); |
112e8700 | 5881 | uiout->field_stream ("at", stb); |
0d381245 | 5882 | } |
859825b8 | 5883 | else |
f00aae0f | 5884 | { |
d28cd78a TT |
5885 | uiout->field_string ("pending", |
5886 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5887 | /* If extra_string is available, it could be holding a condition |
5888 | or dprintf arguments. In either case, make sure it is printed, | |
5889 | too, but only for non-MI streams. */ | |
112e8700 | 5890 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5891 | { |
5892 | if (b->type == bp_dprintf) | |
112e8700 | 5893 | uiout->text (","); |
f00aae0f | 5894 | else |
112e8700 SM |
5895 | uiout->text (" "); |
5896 | uiout->text (b->extra_string); | |
f00aae0f KS |
5897 | } |
5898 | } | |
6c95b8df | 5899 | |
b775012e LM |
5900 | if (loc && is_breakpoint (b) |
5901 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5902 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5903 | { | |
112e8700 SM |
5904 | uiout->text (" ("); |
5905 | uiout->field_string ("evaluated-by", | |
b775012e | 5906 | bp_location_condition_evaluator (loc)); |
112e8700 | 5907 | uiout->text (")"); |
b775012e | 5908 | } |
0d381245 VP |
5909 | } |
5910 | ||
269b11a2 PA |
5911 | static const char * |
5912 | bptype_string (enum bptype type) | |
c906108c | 5913 | { |
c4093a6a JM |
5914 | struct ep_type_description |
5915 | { | |
5916 | enum bptype type; | |
a121b7c1 | 5917 | const char *description; |
c4093a6a JM |
5918 | }; |
5919 | static struct ep_type_description bptypes[] = | |
c906108c | 5920 | { |
c5aa993b JM |
5921 | {bp_none, "?deleted?"}, |
5922 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5923 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5924 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5925 | {bp_until, "until"}, |
5926 | {bp_finish, "finish"}, | |
5927 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5928 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5929 | {bp_read_watchpoint, "read watchpoint"}, |
5930 | {bp_access_watchpoint, "acc watchpoint"}, | |
5931 | {bp_longjmp, "longjmp"}, | |
5932 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5933 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5934 | {bp_exception, "exception"}, |
5935 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5936 | {bp_step_resume, "step resume"}, |
2c03e5be | 5937 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5938 | {bp_watchpoint_scope, "watchpoint scope"}, |
5939 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5940 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5941 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5942 | {bp_thread_event, "thread events"}, |
1900040c | 5943 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5944 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5945 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5946 | {bp_exception_master, "exception master"}, |
ce78b96d | 5947 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5948 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5949 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5950 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5951 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5952 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5953 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5954 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5955 | }; |
269b11a2 PA |
5956 | |
5957 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5958 | || ((int) type != bptypes[(int) type].type)) | |
5959 | internal_error (__FILE__, __LINE__, | |
5960 | _("bptypes table does not describe type #%d."), | |
5961 | (int) type); | |
5962 | ||
5963 | return bptypes[(int) type].description; | |
5964 | } | |
5965 | ||
998580f1 MK |
5966 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5967 | For CLI, prefix the list with the string 'inf'. */ | |
5968 | ||
5969 | static void | |
5970 | output_thread_groups (struct ui_out *uiout, | |
5971 | const char *field_name, | |
5c632425 | 5972 | const std::vector<int> &inf_nums, |
998580f1 MK |
5973 | int mi_only) |
5974 | { | |
112e8700 | 5975 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5976 | |
5977 | /* For backward compatibility, don't display inferiors in CLI unless | |
5978 | there are several. Always display them for MI. */ | |
5979 | if (!is_mi && mi_only) | |
5980 | return; | |
5981 | ||
10f489e5 | 5982 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5983 | |
5c632425 | 5984 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5985 | { |
5986 | if (is_mi) | |
5987 | { | |
5988 | char mi_group[10]; | |
5989 | ||
5c632425 | 5990 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5991 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5992 | } |
5993 | else | |
5994 | { | |
5995 | if (i == 0) | |
112e8700 | 5996 | uiout->text (" inf "); |
998580f1 | 5997 | else |
112e8700 | 5998 | uiout->text (", "); |
998580f1 | 5999 | |
5c632425 | 6000 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6001 | } |
6002 | } | |
998580f1 MK |
6003 | } |
6004 | ||
269b11a2 PA |
6005 | /* Print B to gdb_stdout. */ |
6006 | ||
6007 | static void | |
6008 | print_one_breakpoint_location (struct breakpoint *b, | |
6009 | struct bp_location *loc, | |
6010 | int loc_number, | |
6011 | struct bp_location **last_loc, | |
269b11a2 PA |
6012 | int allflag) |
6013 | { | |
6014 | struct command_line *l; | |
c2c6d25f | 6015 | static char bpenables[] = "nynny"; |
c906108c | 6016 | |
79a45e25 | 6017 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6018 | int header_of_multiple = 0; |
6019 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6020 | struct value_print_options opts; |
6021 | ||
6022 | get_user_print_options (&opts); | |
0d381245 VP |
6023 | |
6024 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6025 | /* See comment in print_one_breakpoint concerning treatment of |
6026 | breakpoints with single disabled location. */ | |
0d381245 VP |
6027 | if (loc == NULL |
6028 | && (b->loc != NULL | |
6029 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6030 | header_of_multiple = 1; | |
6031 | if (loc == NULL) | |
6032 | loc = b->loc; | |
6033 | ||
c4093a6a JM |
6034 | annotate_record (); |
6035 | ||
6036 | /* 1 */ | |
6037 | annotate_field (0); | |
0d381245 | 6038 | if (part_of_multiple) |
528e1572 | 6039 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6040 | else |
528e1572 | 6041 | uiout->field_int ("number", b->number); |
c4093a6a JM |
6042 | |
6043 | /* 2 */ | |
6044 | annotate_field (1); | |
0d381245 | 6045 | if (part_of_multiple) |
112e8700 | 6046 | uiout->field_skip ("type"); |
269b11a2 | 6047 | else |
112e8700 | 6048 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6049 | |
6050 | /* 3 */ | |
6051 | annotate_field (2); | |
0d381245 | 6052 | if (part_of_multiple) |
112e8700 | 6053 | uiout->field_skip ("disp"); |
0d381245 | 6054 | else |
112e8700 | 6055 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6056 | |
c4093a6a JM |
6057 | /* 4 */ |
6058 | annotate_field (3); | |
0d381245 | 6059 | if (part_of_multiple) |
112e8700 | 6060 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6061 | else |
112e8700 | 6062 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6063 | |
c4093a6a | 6064 | /* 5 and 6 */ |
3086aeae | 6065 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6066 | { |
4a64f543 MS |
6067 | /* Although the print_one can possibly print all locations, |
6068 | calling it here is not likely to get any nice result. So, | |
6069 | make sure there's just one location. */ | |
0d381245 | 6070 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6071 | b->ops->print_one (b, last_loc); |
0d381245 | 6072 | } |
3086aeae DJ |
6073 | else |
6074 | switch (b->type) | |
6075 | { | |
6076 | case bp_none: | |
6077 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6078 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6079 | break; |
c906108c | 6080 | |
3086aeae DJ |
6081 | case bp_watchpoint: |
6082 | case bp_hardware_watchpoint: | |
6083 | case bp_read_watchpoint: | |
6084 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6085 | { |
6086 | struct watchpoint *w = (struct watchpoint *) b; | |
6087 | ||
6088 | /* Field 4, the address, is omitted (which makes the columns | |
6089 | not line up too nicely with the headers, but the effect | |
6090 | is relatively readable). */ | |
6091 | if (opts.addressprint) | |
112e8700 | 6092 | uiout->field_skip ("addr"); |
3a5c3e22 | 6093 | annotate_field (5); |
112e8700 | 6094 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6095 | } |
3086aeae DJ |
6096 | break; |
6097 | ||
3086aeae DJ |
6098 | case bp_breakpoint: |
6099 | case bp_hardware_breakpoint: | |
7c16b83e | 6100 | case bp_single_step: |
3086aeae DJ |
6101 | case bp_until: |
6102 | case bp_finish: | |
6103 | case bp_longjmp: | |
6104 | case bp_longjmp_resume: | |
e2e4d78b | 6105 | case bp_longjmp_call_dummy: |
186c406b TT |
6106 | case bp_exception: |
6107 | case bp_exception_resume: | |
3086aeae | 6108 | case bp_step_resume: |
2c03e5be | 6109 | case bp_hp_step_resume: |
3086aeae DJ |
6110 | case bp_watchpoint_scope: |
6111 | case bp_call_dummy: | |
aa7d318d | 6112 | case bp_std_terminate: |
3086aeae DJ |
6113 | case bp_shlib_event: |
6114 | case bp_thread_event: | |
6115 | case bp_overlay_event: | |
0fd8e87f | 6116 | case bp_longjmp_master: |
aa7d318d | 6117 | case bp_std_terminate_master: |
186c406b | 6118 | case bp_exception_master: |
1042e4c0 | 6119 | case bp_tracepoint: |
7a697b8d | 6120 | case bp_fast_tracepoint: |
0fb4aa4b | 6121 | case bp_static_tracepoint: |
e7e0cddf | 6122 | case bp_dprintf: |
4efc6507 | 6123 | case bp_jit_event: |
0e30163f JK |
6124 | case bp_gnu_ifunc_resolver: |
6125 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6126 | if (opts.addressprint) |
3086aeae DJ |
6127 | { |
6128 | annotate_field (4); | |
54e52265 | 6129 | if (header_of_multiple) |
112e8700 | 6130 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6131 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6132 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6133 | else |
112e8700 | 6134 | uiout->field_core_addr ("addr", |
5af949e3 | 6135 | loc->gdbarch, loc->address); |
3086aeae DJ |
6136 | } |
6137 | annotate_field (5); | |
0d381245 | 6138 | if (!header_of_multiple) |
170b53b2 | 6139 | print_breakpoint_location (b, loc); |
0d381245 | 6140 | if (b->loc) |
a6d9a66e | 6141 | *last_loc = b->loc; |
3086aeae DJ |
6142 | break; |
6143 | } | |
c906108c | 6144 | |
6c95b8df | 6145 | |
998580f1 | 6146 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6147 | { |
5c632425 | 6148 | std::vector<int> inf_nums; |
998580f1 | 6149 | int mi_only = 1; |
6c95b8df | 6150 | |
08036331 | 6151 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6152 | { |
6153 | if (inf->pspace == loc->pspace) | |
5c632425 | 6154 | inf_nums.push_back (inf->num); |
6c95b8df | 6155 | } |
998580f1 MK |
6156 | |
6157 | /* For backward compatibility, don't display inferiors in CLI unless | |
6158 | there are several. Always display for MI. */ | |
6159 | if (allflag | |
6160 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6161 | && (number_of_program_spaces () > 1 | |
6162 | || number_of_inferiors () > 1) | |
6163 | /* LOC is for existing B, it cannot be in | |
6164 | moribund_locations and thus having NULL OWNER. */ | |
6165 | && loc->owner->type != bp_catchpoint)) | |
6166 | mi_only = 0; | |
5c632425 | 6167 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6168 | } |
6169 | ||
4a306c9a | 6170 | if (!part_of_multiple) |
c4093a6a | 6171 | { |
4a306c9a JB |
6172 | if (b->thread != -1) |
6173 | { | |
6174 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6175 | "stop only in" line a little further down. */ |
112e8700 SM |
6176 | uiout->text (" thread "); |
6177 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6178 | } |
6179 | else if (b->task != 0) | |
6180 | { | |
112e8700 SM |
6181 | uiout->text (" task "); |
6182 | uiout->field_int ("task", b->task); | |
4a306c9a | 6183 | } |
c4093a6a | 6184 | } |
f1310107 | 6185 | |
112e8700 | 6186 | uiout->text ("\n"); |
f1310107 | 6187 | |
348d480f | 6188 | if (!part_of_multiple) |
f1310107 TJB |
6189 | b->ops->print_one_detail (b, uiout); |
6190 | ||
0d381245 | 6191 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6192 | { |
6193 | annotate_field (6); | |
112e8700 | 6194 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6195 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6196 | the frame ID. */ |
112e8700 | 6197 | uiout->field_core_addr ("frame", |
5af949e3 | 6198 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6199 | uiout->text ("\n"); |
c4093a6a JM |
6200 | } |
6201 | ||
28010a5d | 6202 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6203 | { |
6204 | annotate_field (7); | |
d77f58be | 6205 | if (is_tracepoint (b)) |
112e8700 | 6206 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6207 | else |
112e8700 SM |
6208 | uiout->text ("\tstop only if "); |
6209 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6210 | |
6211 | /* Print whether the target is doing the breakpoint's condition | |
6212 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6213 | if (is_breakpoint (b) | |
6214 | && breakpoint_condition_evaluation_mode () | |
6215 | == condition_evaluation_target) | |
6216 | { | |
112e8700 SM |
6217 | uiout->text (" ("); |
6218 | uiout->field_string ("evaluated-by", | |
b775012e | 6219 | bp_condition_evaluator (b)); |
112e8700 | 6220 | uiout->text (" evals)"); |
b775012e | 6221 | } |
112e8700 | 6222 | uiout->text ("\n"); |
0101ce28 JJ |
6223 | } |
6224 | ||
0d381245 | 6225 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6226 | { |
4a64f543 | 6227 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6228 | uiout->text ("\tstop only in thread "); |
6229 | if (uiout->is_mi_like_p ()) | |
6230 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6231 | else |
6232 | { | |
6233 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6234 | ||
112e8700 | 6235 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6236 | } |
112e8700 | 6237 | uiout->text ("\n"); |
c4093a6a JM |
6238 | } |
6239 | ||
556ec64d YQ |
6240 | if (!part_of_multiple) |
6241 | { | |
6242 | if (b->hit_count) | |
31f56a27 YQ |
6243 | { |
6244 | /* FIXME should make an annotation for this. */ | |
6245 | if (is_catchpoint (b)) | |
112e8700 | 6246 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6247 | else if (is_tracepoint (b)) |
112e8700 | 6248 | uiout->text ("\ttracepoint"); |
31f56a27 | 6249 | else |
112e8700 SM |
6250 | uiout->text ("\tbreakpoint"); |
6251 | uiout->text (" already hit "); | |
6252 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6253 | if (b->hit_count == 1) |
112e8700 | 6254 | uiout->text (" time\n"); |
31f56a27 | 6255 | else |
112e8700 | 6256 | uiout->text (" times\n"); |
31f56a27 | 6257 | } |
556ec64d YQ |
6258 | else |
6259 | { | |
31f56a27 | 6260 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6261 | if (uiout->is_mi_like_p ()) |
6262 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6263 | } |
6264 | } | |
8b93c638 | 6265 | |
0d381245 | 6266 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6267 | { |
6268 | annotate_field (8); | |
112e8700 SM |
6269 | uiout->text ("\tignore next "); |
6270 | uiout->field_int ("ignore", b->ignore_count); | |
6271 | uiout->text (" hits\n"); | |
c4093a6a | 6272 | } |
059fb39f | 6273 | |
816338b5 SS |
6274 | /* Note that an enable count of 1 corresponds to "enable once" |
6275 | behavior, which is reported by the combination of enablement and | |
6276 | disposition, so we don't need to mention it here. */ | |
6277 | if (!part_of_multiple && b->enable_count > 1) | |
6278 | { | |
6279 | annotate_field (8); | |
112e8700 | 6280 | uiout->text ("\tdisable after "); |
816338b5 SS |
6281 | /* Tweak the wording to clarify that ignore and enable counts |
6282 | are distinct, and have additive effect. */ | |
6283 | if (b->ignore_count) | |
112e8700 | 6284 | uiout->text ("additional "); |
816338b5 | 6285 | else |
112e8700 SM |
6286 | uiout->text ("next "); |
6287 | uiout->field_int ("enable", b->enable_count); | |
6288 | uiout->text (" hits\n"); | |
816338b5 SS |
6289 | } |
6290 | ||
f196051f SS |
6291 | if (!part_of_multiple && is_tracepoint (b)) |
6292 | { | |
6293 | struct tracepoint *tp = (struct tracepoint *) b; | |
6294 | ||
6295 | if (tp->traceframe_usage) | |
6296 | { | |
112e8700 SM |
6297 | uiout->text ("\ttrace buffer usage "); |
6298 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6299 | uiout->text (" bytes\n"); | |
f196051f SS |
6300 | } |
6301 | } | |
d3ce09f5 | 6302 | |
d1b0a7bf | 6303 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6304 | if (!part_of_multiple && l) |
c4093a6a JM |
6305 | { |
6306 | annotate_field (9); | |
2e783024 | 6307 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6308 | print_command_lines (uiout, l, 4); |
c4093a6a | 6309 | } |
d24317b4 | 6310 | |
d9b3f62e | 6311 | if (is_tracepoint (b)) |
1042e4c0 | 6312 | { |
d9b3f62e PA |
6313 | struct tracepoint *t = (struct tracepoint *) b; |
6314 | ||
6315 | if (!part_of_multiple && t->pass_count) | |
6316 | { | |
6317 | annotate_field (10); | |
112e8700 SM |
6318 | uiout->text ("\tpass count "); |
6319 | uiout->field_int ("pass", t->pass_count); | |
6320 | uiout->text (" \n"); | |
d9b3f62e | 6321 | } |
f2a8bc8a YQ |
6322 | |
6323 | /* Don't display it when tracepoint or tracepoint location is | |
6324 | pending. */ | |
6325 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6326 | { | |
6327 | annotate_field (11); | |
6328 | ||
112e8700 SM |
6329 | if (uiout->is_mi_like_p ()) |
6330 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6331 | loc->inserted ? "y" : "n"); |
6332 | else | |
6333 | { | |
6334 | if (loc->inserted) | |
112e8700 | 6335 | uiout->text ("\t"); |
f2a8bc8a | 6336 | else |
112e8700 SM |
6337 | uiout->text ("\tnot "); |
6338 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6339 | } |
6340 | } | |
1042e4c0 SS |
6341 | } |
6342 | ||
112e8700 | 6343 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6344 | { |
3a5c3e22 PA |
6345 | if (is_watchpoint (b)) |
6346 | { | |
6347 | struct watchpoint *w = (struct watchpoint *) b; | |
6348 | ||
112e8700 | 6349 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6350 | } |
f00aae0f | 6351 | else if (b->location != NULL |
d28cd78a | 6352 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6353 | uiout->field_string ("original-location", |
d28cd78a | 6354 | event_location_to_string (b->location.get ())); |
d24317b4 | 6355 | } |
c4093a6a | 6356 | } |
c5aa993b | 6357 | |
0d381245 VP |
6358 | static void |
6359 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6360 | struct bp_location **last_loc, |
6c95b8df | 6361 | int allflag) |
0d381245 | 6362 | { |
79a45e25 | 6363 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6364 | |
2e783024 TT |
6365 | { |
6366 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6367 | |
2e783024 TT |
6368 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6369 | } | |
0d381245 VP |
6370 | |
6371 | /* If this breakpoint has custom print function, | |
6372 | it's already printed. Otherwise, print individual | |
6373 | locations, if any. */ | |
6374 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6375 | { | |
4a64f543 MS |
6376 | /* If breakpoint has a single location that is disabled, we |
6377 | print it as if it had several locations, since otherwise it's | |
6378 | hard to represent "breakpoint enabled, location disabled" | |
6379 | situation. | |
6380 | ||
6381 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6382 | internally, that's not a property exposed to user. */ |
0d381245 | 6383 | if (b->loc |
a5606eee | 6384 | && !is_hardware_watchpoint (b) |
8d3788bd | 6385 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6386 | { |
6387 | struct bp_location *loc; | |
6388 | int n = 1; | |
8d3788bd | 6389 | |
0d381245 | 6390 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6391 | { |
2e783024 | 6392 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6393 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6394 | } |
0d381245 VP |
6395 | } |
6396 | } | |
6397 | } | |
6398 | ||
a6d9a66e UW |
6399 | static int |
6400 | breakpoint_address_bits (struct breakpoint *b) | |
6401 | { | |
6402 | int print_address_bits = 0; | |
6403 | struct bp_location *loc; | |
6404 | ||
c6d81124 PA |
6405 | /* Software watchpoints that aren't watching memory don't have an |
6406 | address to print. */ | |
6407 | if (is_no_memory_software_watchpoint (b)) | |
6408 | return 0; | |
6409 | ||
a6d9a66e UW |
6410 | for (loc = b->loc; loc; loc = loc->next) |
6411 | { | |
c7437ca6 PA |
6412 | int addr_bit; |
6413 | ||
c7437ca6 | 6414 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6415 | if (addr_bit > print_address_bits) |
6416 | print_address_bits = addr_bit; | |
6417 | } | |
6418 | ||
6419 | return print_address_bits; | |
6420 | } | |
0d381245 | 6421 | |
65630365 | 6422 | /* See breakpoint.h. */ |
c5aa993b | 6423 | |
65630365 PA |
6424 | void |
6425 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6426 | { |
a6d9a66e | 6427 | struct bp_location *dummy_loc = NULL; |
65630365 | 6428 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6429 | } |
c5aa993b | 6430 | |
09d682a4 TT |
6431 | /* Return true if this breakpoint was set by the user, false if it is |
6432 | internal or momentary. */ | |
6433 | ||
6434 | int | |
6435 | user_breakpoint_p (struct breakpoint *b) | |
6436 | { | |
46c6471b | 6437 | return b->number > 0; |
09d682a4 TT |
6438 | } |
6439 | ||
93daf339 TT |
6440 | /* See breakpoint.h. */ |
6441 | ||
6442 | int | |
6443 | pending_breakpoint_p (struct breakpoint *b) | |
6444 | { | |
6445 | return b->loc == NULL; | |
6446 | } | |
6447 | ||
7f3b0473 | 6448 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6449 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6450 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6451 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6452 | ones for which it returns non-zero. Return the total number of | |
6453 | breakpoints listed. */ | |
c906108c | 6454 | |
d77f58be | 6455 | static int |
4495129a | 6456 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6457 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6458 | { |
52f0bd74 | 6459 | struct breakpoint *b; |
a6d9a66e | 6460 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6461 | int nr_printable_breakpoints; |
79a45b7d | 6462 | struct value_print_options opts; |
a6d9a66e | 6463 | int print_address_bits = 0; |
269b11a2 | 6464 | int print_type_col_width = 14; |
79a45e25 | 6465 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6466 | |
79a45b7d TT |
6467 | get_user_print_options (&opts); |
6468 | ||
4a64f543 MS |
6469 | /* Compute the number of rows in the table, as well as the size |
6470 | required for address fields. */ | |
7f3b0473 AC |
6471 | nr_printable_breakpoints = 0; |
6472 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6473 | { |
6474 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6475 | if (filter && !filter (b)) | |
6476 | continue; | |
6477 | ||
6478 | /* If we have an "args" string, it is a list of breakpoints to | |
6479 | accept. Skip the others. */ | |
6480 | if (args != NULL && *args != '\0') | |
6481 | { | |
6482 | if (allflag && parse_and_eval_long (args) != b->number) | |
6483 | continue; | |
6484 | if (!allflag && !number_is_in_list (args, b->number)) | |
6485 | continue; | |
6486 | } | |
269b11a2 | 6487 | |
e5a67952 MS |
6488 | if (allflag || user_breakpoint_p (b)) |
6489 | { | |
6490 | int addr_bit, type_len; | |
a6d9a66e | 6491 | |
e5a67952 MS |
6492 | addr_bit = breakpoint_address_bits (b); |
6493 | if (addr_bit > print_address_bits) | |
6494 | print_address_bits = addr_bit; | |
269b11a2 | 6495 | |
e5a67952 MS |
6496 | type_len = strlen (bptype_string (b->type)); |
6497 | if (type_len > print_type_col_width) | |
6498 | print_type_col_width = type_len; | |
6499 | ||
6500 | nr_printable_breakpoints++; | |
6501 | } | |
6502 | } | |
7f3b0473 | 6503 | |
4a2b031d TT |
6504 | { |
6505 | ui_out_emit_table table_emitter (uiout, | |
6506 | opts.addressprint ? 6 : 5, | |
6507 | nr_printable_breakpoints, | |
6508 | "BreakpointTable"); | |
6509 | ||
6510 | if (nr_printable_breakpoints > 0) | |
6511 | annotate_breakpoints_headers (); | |
6512 | if (nr_printable_breakpoints > 0) | |
6513 | annotate_field (0); | |
6514 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6515 | if (nr_printable_breakpoints > 0) | |
6516 | annotate_field (1); | |
6517 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6518 | if (nr_printable_breakpoints > 0) | |
6519 | annotate_field (2); | |
6520 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6521 | if (nr_printable_breakpoints > 0) | |
6522 | annotate_field (3); | |
6523 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6524 | if (opts.addressprint) | |
6525 | { | |
6526 | if (nr_printable_breakpoints > 0) | |
6527 | annotate_field (4); | |
6528 | if (print_address_bits <= 32) | |
6529 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6530 | else | |
6531 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6532 | } | |
6533 | if (nr_printable_breakpoints > 0) | |
6534 | annotate_field (5); | |
6535 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6536 | uiout->table_body (); | |
6537 | if (nr_printable_breakpoints > 0) | |
6538 | annotate_breakpoints_table (); | |
6539 | ||
6540 | ALL_BREAKPOINTS (b) | |
6541 | { | |
6542 | QUIT; | |
6543 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6544 | if (filter && !filter (b)) | |
6545 | continue; | |
e5a67952 | 6546 | |
4a2b031d TT |
6547 | /* If we have an "args" string, it is a list of breakpoints to |
6548 | accept. Skip the others. */ | |
e5a67952 | 6549 | |
4a2b031d TT |
6550 | if (args != NULL && *args != '\0') |
6551 | { | |
6552 | if (allflag) /* maintenance info breakpoint */ | |
6553 | { | |
6554 | if (parse_and_eval_long (args) != b->number) | |
6555 | continue; | |
6556 | } | |
6557 | else /* all others */ | |
6558 | { | |
6559 | if (!number_is_in_list (args, b->number)) | |
6560 | continue; | |
6561 | } | |
6562 | } | |
6563 | /* We only print out user settable breakpoints unless the | |
6564 | allflag is set. */ | |
6565 | if (allflag || user_breakpoint_p (b)) | |
6566 | print_one_breakpoint (b, &last_loc, allflag); | |
6567 | } | |
6568 | } | |
698384cd | 6569 | |
7f3b0473 | 6570 | if (nr_printable_breakpoints == 0) |
c906108c | 6571 | { |
4a64f543 MS |
6572 | /* If there's a filter, let the caller decide how to report |
6573 | empty list. */ | |
d77f58be SS |
6574 | if (!filter) |
6575 | { | |
e5a67952 | 6576 | if (args == NULL || *args == '\0') |
112e8700 | 6577 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6578 | else |
112e8700 | 6579 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6580 | args); |
d77f58be | 6581 | } |
c906108c SS |
6582 | } |
6583 | else | |
c4093a6a | 6584 | { |
a6d9a66e UW |
6585 | if (last_loc && !server_command) |
6586 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6587 | } |
c906108c | 6588 | |
4a64f543 | 6589 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6590 | there have been breakpoints? */ |
c906108c | 6591 | annotate_breakpoints_table_end (); |
d77f58be SS |
6592 | |
6593 | return nr_printable_breakpoints; | |
c906108c SS |
6594 | } |
6595 | ||
ad443146 SS |
6596 | /* Display the value of default-collect in a way that is generally |
6597 | compatible with the breakpoint list. */ | |
6598 | ||
6599 | static void | |
6600 | default_collect_info (void) | |
6601 | { | |
79a45e25 PA |
6602 | struct ui_out *uiout = current_uiout; |
6603 | ||
ad443146 SS |
6604 | /* If it has no value (which is frequently the case), say nothing; a |
6605 | message like "No default-collect." gets in user's face when it's | |
6606 | not wanted. */ | |
6607 | if (!*default_collect) | |
6608 | return; | |
6609 | ||
6610 | /* The following phrase lines up nicely with per-tracepoint collect | |
6611 | actions. */ | |
112e8700 SM |
6612 | uiout->text ("default collect "); |
6613 | uiout->field_string ("default-collect", default_collect); | |
6614 | uiout->text (" \n"); | |
ad443146 SS |
6615 | } |
6616 | ||
c906108c | 6617 | static void |
0b39b52e | 6618 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6619 | { |
e5a67952 | 6620 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6621 | |
6622 | default_collect_info (); | |
d77f58be SS |
6623 | } |
6624 | ||
6625 | static void | |
1d12d88f | 6626 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6627 | { |
e5a67952 | 6628 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6629 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6630 | |
6631 | if (num_printed == 0) | |
6632 | { | |
e5a67952 | 6633 | if (args == NULL || *args == '\0') |
112e8700 | 6634 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6635 | else |
112e8700 | 6636 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6637 | } |
c906108c SS |
6638 | } |
6639 | ||
7a292a7a | 6640 | static void |
4495129a | 6641 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6642 | { |
e5a67952 | 6643 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6644 | |
6645 | default_collect_info (); | |
c906108c SS |
6646 | } |
6647 | ||
0d381245 | 6648 | static int |
714835d5 | 6649 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6650 | struct program_space *pspace, |
714835d5 | 6651 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6652 | { |
6653 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6654 | |
0d381245 VP |
6655 | for (; bl; bl = bl->next) |
6656 | { | |
6c95b8df PA |
6657 | if (bl->pspace == pspace |
6658 | && bl->address == pc | |
0d381245 VP |
6659 | && (!overlay_debugging || bl->section == section)) |
6660 | return 1; | |
6661 | } | |
6662 | return 0; | |
6663 | } | |
6664 | ||
672f9b60 | 6665 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6666 | concerns with logical breakpoints, so we match program spaces, not |
6667 | address spaces. */ | |
c906108c SS |
6668 | |
6669 | static void | |
6c95b8df PA |
6670 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6671 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6672 | struct obj_section *section, int thread) |
c906108c | 6673 | { |
52f0bd74 AC |
6674 | int others = 0; |
6675 | struct breakpoint *b; | |
c906108c SS |
6676 | |
6677 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6678 | others += (user_breakpoint_p (b) |
6679 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6680 | if (others > 0) |
6681 | { | |
a3f17187 AC |
6682 | if (others == 1) |
6683 | printf_filtered (_("Note: breakpoint ")); | |
6684 | else /* if (others == ???) */ | |
6685 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6686 | ALL_BREAKPOINTS (b) |
672f9b60 | 6687 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6688 | { |
6689 | others--; | |
6690 | printf_filtered ("%d", b->number); | |
6691 | if (b->thread == -1 && thread != -1) | |
6692 | printf_filtered (" (all threads)"); | |
6693 | else if (b->thread != -1) | |
6694 | printf_filtered (" (thread %d)", b->thread); | |
6695 | printf_filtered ("%s%s ", | |
059fb39f | 6696 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6697 | || b->enable_state == bp_call_disabled) |
0d381245 | 6698 | ? " (disabled)" |
0d381245 VP |
6699 | : ""), |
6700 | (others > 1) ? "," | |
6701 | : ((others == 1) ? " and" : "")); | |
6702 | } | |
a3f17187 | 6703 | printf_filtered (_("also set at pc ")); |
2636d81d | 6704 | fputs_styled (paddress (gdbarch, pc), address_style.style (), gdb_stdout); |
c906108c SS |
6705 | printf_filtered (".\n"); |
6706 | } | |
6707 | } | |
6708 | \f | |
c906108c | 6709 | |
e4f237da | 6710 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6711 | BPT locations. For some breakpoint types, the locations' address members |
6712 | are irrelevant and it makes no sense to attempt to compare them to other | |
6713 | addresses (or use them for any other purpose either). | |
e4f237da | 6714 | |
4a64f543 | 6715 | More specifically, each of the following breakpoint types will |
244558af | 6716 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6717 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6718 | breakpoint location at address zero: |
e4f237da KB |
6719 | |
6720 | bp_watchpoint | |
2d134ed3 PA |
6721 | bp_catchpoint |
6722 | ||
6723 | */ | |
e4f237da KB |
6724 | |
6725 | static int | |
6726 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6727 | { | |
6728 | enum bptype type = bpt->type; | |
6729 | ||
2d134ed3 PA |
6730 | return (type != bp_watchpoint && type != bp_catchpoint); |
6731 | } | |
6732 | ||
6733 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6734 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6735 | ||
6736 | static int | |
4a64f543 MS |
6737 | watchpoint_locations_match (struct bp_location *loc1, |
6738 | struct bp_location *loc2) | |
2d134ed3 | 6739 | { |
3a5c3e22 PA |
6740 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6741 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6742 | ||
6743 | /* Both of them must exist. */ | |
6744 | gdb_assert (w1 != NULL); | |
6745 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6746 | |
4a64f543 MS |
6747 | /* If the target can evaluate the condition expression in hardware, |
6748 | then we we need to insert both watchpoints even if they are at | |
6749 | the same place. Otherwise the watchpoint will only trigger when | |
6750 | the condition of whichever watchpoint was inserted evaluates to | |
6751 | true, not giving a chance for GDB to check the condition of the | |
6752 | other watchpoint. */ | |
3a5c3e22 | 6753 | if ((w1->cond_exp |
4a64f543 MS |
6754 | && target_can_accel_watchpoint_condition (loc1->address, |
6755 | loc1->length, | |
0cf6dd15 | 6756 | loc1->watchpoint_type, |
4d01a485 | 6757 | w1->cond_exp.get ())) |
3a5c3e22 | 6758 | || (w2->cond_exp |
4a64f543 MS |
6759 | && target_can_accel_watchpoint_condition (loc2->address, |
6760 | loc2->length, | |
0cf6dd15 | 6761 | loc2->watchpoint_type, |
4d01a485 | 6762 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6763 | return 0; |
6764 | ||
85d721b8 PA |
6765 | /* Note that this checks the owner's type, not the location's. In |
6766 | case the target does not support read watchpoints, but does | |
6767 | support access watchpoints, we'll have bp_read_watchpoint | |
6768 | watchpoints with hw_access locations. Those should be considered | |
6769 | duplicates of hw_read locations. The hw_read locations will | |
6770 | become hw_access locations later. */ | |
2d134ed3 PA |
6771 | return (loc1->owner->type == loc2->owner->type |
6772 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6773 | && loc1->address == loc2->address | |
6774 | && loc1->length == loc2->length); | |
e4f237da KB |
6775 | } |
6776 | ||
31e77af2 | 6777 | /* See breakpoint.h. */ |
6c95b8df | 6778 | |
31e77af2 | 6779 | int |
accd0bcd YQ |
6780 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6781 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6782 | { |
f5656ead | 6783 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6784 | || aspace1 == aspace2) |
6785 | && addr1 == addr2); | |
6786 | } | |
6787 | ||
f1310107 TJB |
6788 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6789 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6790 | matches ASPACE2. On targets that have global breakpoints, the address | |
6791 | space doesn't really matter. */ | |
6792 | ||
6793 | static int | |
accd0bcd YQ |
6794 | breakpoint_address_match_range (const address_space *aspace1, |
6795 | CORE_ADDR addr1, | |
6796 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6797 | CORE_ADDR addr2) |
6798 | { | |
f5656ead | 6799 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6800 | || aspace1 == aspace2) |
6801 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6802 | } | |
6803 | ||
6804 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6805 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6806 | matches the breakpoint's address space. On targets that have global | |
6807 | breakpoints, the address space doesn't really matter. */ | |
6808 | ||
6809 | static int | |
6810 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6811 | const address_space *aspace, |
f1310107 TJB |
6812 | CORE_ADDR addr) |
6813 | { | |
6814 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6815 | aspace, addr) | |
6816 | || (bl->length | |
6817 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6818 | bl->address, bl->length, | |
6819 | aspace, addr))); | |
6820 | } | |
6821 | ||
d35ae833 PA |
6822 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6823 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6824 | match happens only if ASPACE matches the breakpoint's address | |
6825 | space. On targets that have global breakpoints, the address space | |
6826 | doesn't really matter. */ | |
6827 | ||
6828 | static int | |
6829 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6830 | const address_space *aspace, |
d35ae833 PA |
6831 | CORE_ADDR addr, int len) |
6832 | { | |
6833 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6834 | || bl->pspace->aspace == aspace) | |
6835 | { | |
6836 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6837 | ||
6838 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6839 | return 1; | |
6840 | } | |
6841 | return 0; | |
6842 | } | |
6843 | ||
1e4d1764 YQ |
6844 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6845 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6846 | true, otherwise returns false. */ | |
6847 | ||
6848 | static int | |
6849 | tracepoint_locations_match (struct bp_location *loc1, | |
6850 | struct bp_location *loc2) | |
6851 | { | |
6852 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6853 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6854 | locations at the same address of different tracepoints are regarded as | |
6855 | different locations. */ | |
6856 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6857 | else | |
6858 | return 0; | |
6859 | } | |
6860 | ||
2d134ed3 PA |
6861 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6862 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6863 | represent the same location. */ | |
6864 | ||
6865 | static int | |
4a64f543 MS |
6866 | breakpoint_locations_match (struct bp_location *loc1, |
6867 | struct bp_location *loc2) | |
2d134ed3 | 6868 | { |
2bdf28a0 JK |
6869 | int hw_point1, hw_point2; |
6870 | ||
6871 | /* Both of them must not be in moribund_locations. */ | |
6872 | gdb_assert (loc1->owner != NULL); | |
6873 | gdb_assert (loc2->owner != NULL); | |
6874 | ||
6875 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6876 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6877 | |
6878 | if (hw_point1 != hw_point2) | |
6879 | return 0; | |
6880 | else if (hw_point1) | |
6881 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6882 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6883 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6884 | else |
f1310107 TJB |
6885 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6886 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6887 | loc2->pspace->aspace, loc2->address) | |
6888 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6889 | } |
6890 | ||
76897487 KB |
6891 | static void |
6892 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6893 | int bnum, int have_bnum) | |
6894 | { | |
f63fbe86 MS |
6895 | /* The longest string possibly returned by hex_string_custom |
6896 | is 50 chars. These must be at least that big for safety. */ | |
6897 | char astr1[64]; | |
6898 | char astr2[64]; | |
76897487 | 6899 | |
bb599908 PH |
6900 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6901 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6902 | if (have_bnum) |
8a3fe4f8 | 6903 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6904 | bnum, astr1, astr2); |
6905 | else | |
8a3fe4f8 | 6906 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6907 | } |
6908 | ||
4a64f543 MS |
6909 | /* Adjust a breakpoint's address to account for architectural |
6910 | constraints on breakpoint placement. Return the adjusted address. | |
6911 | Note: Very few targets require this kind of adjustment. For most | |
6912 | targets, this function is simply the identity function. */ | |
76897487 KB |
6913 | |
6914 | static CORE_ADDR | |
a6d9a66e UW |
6915 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6916 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6917 | { |
a0de8c21 YQ |
6918 | if (bptype == bp_watchpoint |
6919 | || bptype == bp_hardware_watchpoint | |
6920 | || bptype == bp_read_watchpoint | |
6921 | || bptype == bp_access_watchpoint | |
6922 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6923 | { |
6924 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6925 | have their addresses modified. */ | |
6926 | return bpaddr; | |
6927 | } | |
7c16b83e PA |
6928 | else if (bptype == bp_single_step) |
6929 | { | |
6930 | /* Single-step breakpoints should not have their addresses | |
6931 | modified. If there's any architectural constrain that | |
6932 | applies to this address, then it should have already been | |
6933 | taken into account when the breakpoint was created in the | |
6934 | first place. If we didn't do this, stepping through e.g., | |
6935 | Thumb-2 IT blocks would break. */ | |
6936 | return bpaddr; | |
6937 | } | |
76897487 KB |
6938 | else |
6939 | { | |
a0de8c21 YQ |
6940 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6941 | ||
6942 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6943 | { | |
6944 | /* Some targets have architectural constraints on the placement | |
6945 | of breakpoint instructions. Obtain the adjusted address. */ | |
6946 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6947 | } | |
76897487 | 6948 | |
a0de8c21 | 6949 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6950 | |
6951 | /* An adjusted breakpoint address can significantly alter | |
6952 | a user's expectations. Print a warning if an adjustment | |
6953 | is required. */ | |
6954 | if (adjusted_bpaddr != bpaddr) | |
6955 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6956 | ||
6957 | return adjusted_bpaddr; | |
6958 | } | |
6959 | } | |
6960 | ||
5f486660 | 6961 | bp_location::bp_location (breakpoint *owner) |
7cc221ef | 6962 | { |
5625a286 | 6963 | bp_location *loc = this; |
7cc221ef | 6964 | |
28010a5d | 6965 | loc->owner = owner; |
b775012e | 6966 | loc->cond_bytecode = NULL; |
0d381245 VP |
6967 | loc->shlib_disabled = 0; |
6968 | loc->enabled = 1; | |
e049a4b5 | 6969 | |
28010a5d | 6970 | switch (owner->type) |
e049a4b5 DJ |
6971 | { |
6972 | case bp_breakpoint: | |
7c16b83e | 6973 | case bp_single_step: |
e049a4b5 DJ |
6974 | case bp_until: |
6975 | case bp_finish: | |
6976 | case bp_longjmp: | |
6977 | case bp_longjmp_resume: | |
e2e4d78b | 6978 | case bp_longjmp_call_dummy: |
186c406b TT |
6979 | case bp_exception: |
6980 | case bp_exception_resume: | |
e049a4b5 | 6981 | case bp_step_resume: |
2c03e5be | 6982 | case bp_hp_step_resume: |
e049a4b5 DJ |
6983 | case bp_watchpoint_scope: |
6984 | case bp_call_dummy: | |
aa7d318d | 6985 | case bp_std_terminate: |
e049a4b5 DJ |
6986 | case bp_shlib_event: |
6987 | case bp_thread_event: | |
6988 | case bp_overlay_event: | |
4efc6507 | 6989 | case bp_jit_event: |
0fd8e87f | 6990 | case bp_longjmp_master: |
aa7d318d | 6991 | case bp_std_terminate_master: |
186c406b | 6992 | case bp_exception_master: |
0e30163f JK |
6993 | case bp_gnu_ifunc_resolver: |
6994 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6995 | case bp_dprintf: |
e049a4b5 | 6996 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6997 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6998 | break; |
6999 | case bp_hardware_breakpoint: | |
7000 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7001 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7002 | break; |
7003 | case bp_hardware_watchpoint: | |
7004 | case bp_read_watchpoint: | |
7005 | case bp_access_watchpoint: | |
7006 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7007 | break; | |
7008 | case bp_watchpoint: | |
ce78b96d | 7009 | case bp_catchpoint: |
15c3d785 PA |
7010 | case bp_tracepoint: |
7011 | case bp_fast_tracepoint: | |
0fb4aa4b | 7012 | case bp_static_tracepoint: |
e049a4b5 DJ |
7013 | loc->loc_type = bp_loc_other; |
7014 | break; | |
7015 | default: | |
e2e0b3e5 | 7016 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7017 | } |
7018 | ||
f431efe5 | 7019 | loc->refc = 1; |
28010a5d PA |
7020 | } |
7021 | ||
7022 | /* Allocate a struct bp_location. */ | |
7023 | ||
7024 | static struct bp_location * | |
7025 | allocate_bp_location (struct breakpoint *bpt) | |
7026 | { | |
348d480f PA |
7027 | return bpt->ops->allocate_location (bpt); |
7028 | } | |
7cc221ef | 7029 | |
f431efe5 PA |
7030 | static void |
7031 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7032 | { |
4d01a485 | 7033 | delete loc; |
fe3f5fa8 VP |
7034 | } |
7035 | ||
f431efe5 PA |
7036 | /* Increment reference count. */ |
7037 | ||
7038 | static void | |
7039 | incref_bp_location (struct bp_location *bl) | |
7040 | { | |
7041 | ++bl->refc; | |
7042 | } | |
7043 | ||
7044 | /* Decrement reference count. If the reference count reaches 0, | |
7045 | destroy the bp_location. Sets *BLP to NULL. */ | |
7046 | ||
7047 | static void | |
7048 | decref_bp_location (struct bp_location **blp) | |
7049 | { | |
0807b50c PA |
7050 | gdb_assert ((*blp)->refc > 0); |
7051 | ||
f431efe5 PA |
7052 | if (--(*blp)->refc == 0) |
7053 | free_bp_location (*blp); | |
7054 | *blp = NULL; | |
7055 | } | |
7056 | ||
346774a9 | 7057 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7058 | |
b270e6f9 TT |
7059 | static breakpoint * |
7060 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7061 | { |
346774a9 | 7062 | struct breakpoint *b1; |
b270e6f9 | 7063 | struct breakpoint *result = b.get (); |
c906108c | 7064 | |
346774a9 PA |
7065 | /* Add this breakpoint to the end of the chain so that a list of |
7066 | breakpoints will come out in order of increasing numbers. */ | |
7067 | ||
7068 | b1 = breakpoint_chain; | |
7069 | if (b1 == 0) | |
b270e6f9 | 7070 | breakpoint_chain = b.release (); |
346774a9 PA |
7071 | else |
7072 | { | |
7073 | while (b1->next) | |
7074 | b1 = b1->next; | |
b270e6f9 | 7075 | b1->next = b.release (); |
346774a9 | 7076 | } |
b270e6f9 TT |
7077 | |
7078 | return result; | |
346774a9 PA |
7079 | } |
7080 | ||
7081 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7082 | ||
7083 | static void | |
7084 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7085 | struct gdbarch *gdbarch, | |
28010a5d | 7086 | enum bptype bptype, |
c0a91b2b | 7087 | const struct breakpoint_ops *ops) |
346774a9 | 7088 | { |
348d480f PA |
7089 | gdb_assert (ops != NULL); |
7090 | ||
28010a5d | 7091 | b->ops = ops; |
4d28f7a8 | 7092 | b->type = bptype; |
a6d9a66e | 7093 | b->gdbarch = gdbarch; |
c906108c SS |
7094 | b->language = current_language->la_language; |
7095 | b->input_radix = input_radix; | |
d0fb5eae | 7096 | b->related_breakpoint = b; |
346774a9 PA |
7097 | } |
7098 | ||
7099 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7100 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7101 | |
7102 | static struct breakpoint * | |
7103 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7104 | enum bptype bptype, |
c0a91b2b | 7105 | const struct breakpoint_ops *ops) |
346774a9 | 7106 | { |
3b0871f4 | 7107 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7108 | |
3b0871f4 | 7109 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7110 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7111 | } |
7112 | ||
0e30163f JK |
7113 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7114 | resolutions should be made as the user specified the location explicitly | |
7115 | enough. */ | |
7116 | ||
0d381245 | 7117 | static void |
0e30163f | 7118 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7119 | { |
2bdf28a0 JK |
7120 | gdb_assert (loc->owner != NULL); |
7121 | ||
0d381245 | 7122 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7123 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7124 | || is_tracepoint (loc->owner)) |
0d381245 | 7125 | { |
2c02bd72 | 7126 | const char *function_name; |
0e30163f | 7127 | |
3467ec66 | 7128 | if (loc->msymbol != NULL |
f50776aa PA |
7129 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
7130 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc) | |
3467ec66 | 7131 | && !explicit_loc) |
0e30163f JK |
7132 | { |
7133 | struct breakpoint *b = loc->owner; | |
7134 | ||
3467ec66 PA |
7135 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7136 | ||
7137 | if (b->type == bp_breakpoint && b->loc == loc | |
7138 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7139 | { |
7140 | /* Create only the whole new breakpoint of this type but do not | |
7141 | mess more complicated breakpoints with multiple locations. */ | |
7142 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7143 | /* Remember the resolver's address for use by the return |
7144 | breakpoint. */ | |
3467ec66 | 7145 | loc->related_address = loc->address; |
0e30163f JK |
7146 | } |
7147 | } | |
3467ec66 PA |
7148 | else |
7149 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7150 | |
2c02bd72 DE |
7151 | if (function_name) |
7152 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7153 | } |
7154 | } | |
7155 | ||
a6d9a66e | 7156 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7157 | struct gdbarch * |
a6d9a66e UW |
7158 | get_sal_arch (struct symtab_and_line sal) |
7159 | { | |
7160 | if (sal.section) | |
7161 | return get_objfile_arch (sal.section->objfile); | |
7162 | if (sal.symtab) | |
eb822aa6 | 7163 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7164 | |
7165 | return NULL; | |
7166 | } | |
7167 | ||
346774a9 PA |
7168 | /* Low level routine for partially initializing a breakpoint of type |
7169 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7170 | file name, and line number are provided by SAL. |
0d381245 VP |
7171 | |
7172 | It is expected that the caller will complete the initialization of | |
7173 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7174 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7175 | |
346774a9 PA |
7176 | static void |
7177 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7178 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7179 | const struct breakpoint_ops *ops) |
0d381245 | 7180 | { |
28010a5d | 7181 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7182 | |
3742cc8b | 7183 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7184 | |
6c95b8df PA |
7185 | if (bptype != bp_catchpoint) |
7186 | gdb_assert (sal.pspace != NULL); | |
7187 | ||
f8eba3c6 TT |
7188 | /* Store the program space that was used to set the breakpoint, |
7189 | except for ordinary breakpoints, which are independent of the | |
7190 | program space. */ | |
7191 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7192 | b->pspace = sal.pspace; | |
346774a9 | 7193 | } |
c906108c | 7194 | |
346774a9 PA |
7195 | /* set_raw_breakpoint is a low level routine for allocating and |
7196 | partially initializing a breakpoint of type BPTYPE. The newly | |
7197 | created breakpoint's address, section, source file name, and line | |
7198 | number are provided by SAL. The newly created and partially | |
7199 | initialized breakpoint is added to the breakpoint chain and | |
7200 | is also returned as the value of this function. | |
7201 | ||
7202 | It is expected that the caller will complete the initialization of | |
7203 | the newly created breakpoint struct as well as output any status | |
7204 | information regarding the creation of a new breakpoint. In | |
7205 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7206 | number! Care should be taken to not allow an error to occur | |
7207 | prior to completing the initialization of the breakpoint. If this | |
7208 | should happen, a bogus breakpoint will be left on the chain. */ | |
7209 | ||
7210 | struct breakpoint * | |
7211 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7212 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7213 | const struct breakpoint_ops *ops) |
346774a9 | 7214 | { |
3b0871f4 | 7215 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7216 | |
3b0871f4 | 7217 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7218 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7219 | } |
7220 | ||
53a5351d | 7221 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7222 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7223 | initiated the operation. */ | |
c906108c SS |
7224 | |
7225 | void | |
186c406b | 7226 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7227 | { |
35df4500 | 7228 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7229 | int thread = tp->global_num; |
0fd8e87f UW |
7230 | |
7231 | /* To avoid having to rescan all objfile symbols at every step, | |
7232 | we maintain a list of continually-inserted but always disabled | |
7233 | longjmp "master" breakpoints. Here, we simply create momentary | |
7234 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7235 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7236 | if (b->pspace == current_program_space |
186c406b TT |
7237 | && (b->type == bp_longjmp_master |
7238 | || b->type == bp_exception_master)) | |
0fd8e87f | 7239 | { |
06edf0c0 PA |
7240 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7241 | struct breakpoint *clone; | |
cc59ec59 | 7242 | |
e2e4d78b JK |
7243 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7244 | after their removal. */ | |
06edf0c0 | 7245 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7246 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7247 | clone->thread = thread; |
7248 | } | |
186c406b TT |
7249 | |
7250 | tp->initiating_frame = frame; | |
c906108c SS |
7251 | } |
7252 | ||
611c83ae | 7253 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7254 | void |
611c83ae | 7255 | delete_longjmp_breakpoint (int thread) |
c906108c | 7256 | { |
35df4500 | 7257 | struct breakpoint *b, *b_tmp; |
c906108c | 7258 | |
35df4500 | 7259 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7260 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7261 | { |
7262 | if (b->thread == thread) | |
7263 | delete_breakpoint (b); | |
7264 | } | |
c906108c SS |
7265 | } |
7266 | ||
f59f708a PA |
7267 | void |
7268 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7269 | { | |
7270 | struct breakpoint *b, *b_tmp; | |
7271 | ||
7272 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7273 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7274 | { | |
7275 | if (b->thread == thread) | |
7276 | b->disposition = disp_del_at_next_stop; | |
7277 | } | |
7278 | } | |
7279 | ||
e2e4d78b JK |
7280 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7281 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7282 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7283 | breakpoints. */ | |
7284 | ||
7285 | struct breakpoint * | |
7286 | set_longjmp_breakpoint_for_call_dummy (void) | |
7287 | { | |
7288 | struct breakpoint *b, *retval = NULL; | |
7289 | ||
7290 | ALL_BREAKPOINTS (b) | |
7291 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7292 | { | |
7293 | struct breakpoint *new_b; | |
7294 | ||
7295 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7296 | &momentary_breakpoint_ops, |
7297 | 1); | |
00431a78 | 7298 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7299 | |
7300 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7301 | ||
7302 | gdb_assert (new_b->related_breakpoint == new_b); | |
7303 | if (retval == NULL) | |
7304 | retval = new_b; | |
7305 | new_b->related_breakpoint = retval; | |
7306 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7307 | retval = retval->related_breakpoint; | |
7308 | retval->related_breakpoint = new_b; | |
7309 | } | |
7310 | ||
7311 | return retval; | |
7312 | } | |
7313 | ||
7314 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7315 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7316 | stack. |
7317 | ||
7318 | You should call this function only at places where it is safe to currently | |
7319 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7320 | frames. */ | |
7321 | ||
7322 | void | |
b67a2c6f | 7323 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7324 | { |
7325 | struct breakpoint *b, *b_tmp; | |
7326 | ||
7327 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7328 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7329 | { |
7330 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7331 | ||
7332 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7333 | dummy_b = dummy_b->related_breakpoint; | |
7334 | if (dummy_b->type != bp_call_dummy | |
7335 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7336 | continue; | |
7337 | ||
00431a78 | 7338 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7339 | |
7340 | while (b->related_breakpoint != b) | |
7341 | { | |
7342 | if (b_tmp == b->related_breakpoint) | |
7343 | b_tmp = b->related_breakpoint->next; | |
7344 | delete_breakpoint (b->related_breakpoint); | |
7345 | } | |
7346 | delete_breakpoint (b); | |
7347 | } | |
7348 | } | |
7349 | ||
1900040c MS |
7350 | void |
7351 | enable_overlay_breakpoints (void) | |
7352 | { | |
52f0bd74 | 7353 | struct breakpoint *b; |
1900040c MS |
7354 | |
7355 | ALL_BREAKPOINTS (b) | |
7356 | if (b->type == bp_overlay_event) | |
7357 | { | |
7358 | b->enable_state = bp_enabled; | |
44702360 | 7359 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7360 | overlay_events_enabled = 1; |
1900040c MS |
7361 | } |
7362 | } | |
7363 | ||
7364 | void | |
7365 | disable_overlay_breakpoints (void) | |
7366 | { | |
52f0bd74 | 7367 | struct breakpoint *b; |
1900040c MS |
7368 | |
7369 | ALL_BREAKPOINTS (b) | |
7370 | if (b->type == bp_overlay_event) | |
7371 | { | |
7372 | b->enable_state = bp_disabled; | |
44702360 | 7373 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7374 | overlay_events_enabled = 0; |
1900040c MS |
7375 | } |
7376 | } | |
7377 | ||
aa7d318d TT |
7378 | /* Set an active std::terminate breakpoint for each std::terminate |
7379 | master breakpoint. */ | |
7380 | void | |
7381 | set_std_terminate_breakpoint (void) | |
7382 | { | |
35df4500 | 7383 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7384 | |
35df4500 | 7385 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7386 | if (b->pspace == current_program_space |
7387 | && b->type == bp_std_terminate_master) | |
7388 | { | |
06edf0c0 | 7389 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7390 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7391 | } |
7392 | } | |
7393 | ||
7394 | /* Delete all the std::terminate breakpoints. */ | |
7395 | void | |
7396 | delete_std_terminate_breakpoint (void) | |
7397 | { | |
35df4500 | 7398 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7399 | |
35df4500 | 7400 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7401 | if (b->type == bp_std_terminate) |
7402 | delete_breakpoint (b); | |
7403 | } | |
7404 | ||
c4093a6a | 7405 | struct breakpoint * |
a6d9a66e | 7406 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7407 | { |
7408 | struct breakpoint *b; | |
c4093a6a | 7409 | |
06edf0c0 PA |
7410 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7411 | &internal_breakpoint_ops); | |
7412 | ||
b5de0fa7 | 7413 | b->enable_state = bp_enabled; |
f00aae0f | 7414 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7415 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7416 | |
44702360 | 7417 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7418 | |
c4093a6a JM |
7419 | return b; |
7420 | } | |
7421 | ||
0101ce28 JJ |
7422 | struct lang_and_radix |
7423 | { | |
7424 | enum language lang; | |
7425 | int radix; | |
7426 | }; | |
7427 | ||
4efc6507 DE |
7428 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7429 | ||
7430 | struct breakpoint * | |
7431 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7432 | { | |
2a7f3dff PA |
7433 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7434 | &internal_breakpoint_ops); | |
4efc6507 | 7435 | } |
0101ce28 | 7436 | |
03673fc7 PP |
7437 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7438 | ||
7439 | void | |
7440 | remove_jit_event_breakpoints (void) | |
7441 | { | |
7442 | struct breakpoint *b, *b_tmp; | |
7443 | ||
7444 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7445 | if (b->type == bp_jit_event | |
7446 | && b->loc->pspace == current_program_space) | |
7447 | delete_breakpoint (b); | |
7448 | } | |
7449 | ||
cae688ec JJ |
7450 | void |
7451 | remove_solib_event_breakpoints (void) | |
7452 | { | |
35df4500 | 7453 | struct breakpoint *b, *b_tmp; |
cae688ec | 7454 | |
35df4500 | 7455 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7456 | if (b->type == bp_shlib_event |
7457 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7458 | delete_breakpoint (b); |
7459 | } | |
7460 | ||
f37f681c PA |
7461 | /* See breakpoint.h. */ |
7462 | ||
7463 | void | |
7464 | remove_solib_event_breakpoints_at_next_stop (void) | |
7465 | { | |
7466 | struct breakpoint *b, *b_tmp; | |
7467 | ||
7468 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7469 | if (b->type == bp_shlib_event | |
7470 | && b->loc->pspace == current_program_space) | |
7471 | b->disposition = disp_del_at_next_stop; | |
7472 | } | |
7473 | ||
04086b45 PA |
7474 | /* Helper for create_solib_event_breakpoint / |
7475 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7476 | INSERT_MODE to pass through to update_global_location_list. */ | |
7477 | ||
7478 | static struct breakpoint * | |
7479 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7480 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7481 | { |
7482 | struct breakpoint *b; | |
7483 | ||
06edf0c0 PA |
7484 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7485 | &internal_breakpoint_ops); | |
04086b45 | 7486 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7487 | return b; |
7488 | } | |
7489 | ||
04086b45 PA |
7490 | struct breakpoint * |
7491 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7492 | { | |
7493 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7494 | } | |
7495 | ||
f37f681c PA |
7496 | /* See breakpoint.h. */ |
7497 | ||
7498 | struct breakpoint * | |
7499 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7500 | { | |
7501 | struct breakpoint *b; | |
7502 | ||
04086b45 PA |
7503 | /* Explicitly tell update_global_location_list to insert |
7504 | locations. */ | |
7505 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7506 | if (!b->loc->inserted) |
7507 | { | |
7508 | delete_breakpoint (b); | |
7509 | return NULL; | |
7510 | } | |
7511 | return b; | |
7512 | } | |
7513 | ||
cae688ec JJ |
7514 | /* Disable any breakpoints that are on code in shared libraries. Only |
7515 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7516 | ||
7517 | void | |
cb851954 | 7518 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7519 | { |
876fa593 | 7520 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7521 | |
876fa593 | 7522 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7523 | { |
2bdf28a0 | 7524 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7525 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7526 | |
4a64f543 MS |
7527 | /* We apply the check to all breakpoints, including disabled for |
7528 | those with loc->duplicate set. This is so that when breakpoint | |
7529 | becomes enabled, or the duplicate is removed, gdb will try to | |
7530 | insert all breakpoints. If we don't set shlib_disabled here, | |
7531 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7532 | if (((b->type == bp_breakpoint) |
508ccb1f | 7533 | || (b->type == bp_jit_event) |
1042e4c0 | 7534 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7535 | || (is_tracepoint (b))) |
6c95b8df | 7536 | && loc->pspace == current_program_space |
0d381245 | 7537 | && !loc->shlib_disabled |
6c95b8df | 7538 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7539 | ) |
0d381245 VP |
7540 | { |
7541 | loc->shlib_disabled = 1; | |
7542 | } | |
cae688ec JJ |
7543 | } |
7544 | } | |
7545 | ||
63644780 NB |
7546 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7547 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7548 | disabled ones can just stay disabled. */ | |
84acb35a | 7549 | |
75149521 | 7550 | static void |
84acb35a JJ |
7551 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7552 | { | |
876fa593 | 7553 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7554 | int disabled_shlib_breaks = 0; |
7555 | ||
876fa593 | 7556 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7557 | { |
2bdf28a0 | 7558 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7559 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7560 | |
1e4d1764 | 7561 | if (solib->pspace == loc->pspace |
e2dd7057 | 7562 | && !loc->shlib_disabled |
1e4d1764 YQ |
7563 | && (((b->type == bp_breakpoint |
7564 | || b->type == bp_jit_event | |
7565 | || b->type == bp_hardware_breakpoint) | |
7566 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7567 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7568 | || is_tracepoint (b)) | |
e2dd7057 | 7569 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7570 | { |
e2dd7057 PP |
7571 | loc->shlib_disabled = 1; |
7572 | /* At this point, we cannot rely on remove_breakpoint | |
7573 | succeeding so we must mark the breakpoint as not inserted | |
7574 | to prevent future errors occurring in remove_breakpoints. */ | |
7575 | loc->inserted = 0; | |
8d3788bd VP |
7576 | |
7577 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7578 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7579 | |
e2dd7057 PP |
7580 | if (!disabled_shlib_breaks) |
7581 | { | |
223ffa71 | 7582 | target_terminal::ours_for_output (); |
3e43a32a MS |
7583 | warning (_("Temporarily disabling breakpoints " |
7584 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7585 | solib->so_name); |
84acb35a | 7586 | } |
e2dd7057 | 7587 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7588 | } |
7589 | } | |
84acb35a JJ |
7590 | } |
7591 | ||
63644780 NB |
7592 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7593 | notification of free_objfile. Only apply to enabled breakpoints, | |
7594 | disabled ones can just stay disabled. */ | |
7595 | ||
7596 | static void | |
7597 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7598 | { | |
7599 | struct breakpoint *b; | |
7600 | ||
7601 | if (objfile == NULL) | |
7602 | return; | |
7603 | ||
d03de421 PA |
7604 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7605 | managed by the user with add-symbol-file/remove-symbol-file. | |
7606 | Similarly to how breakpoints in shared libraries are handled in | |
7607 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7608 | shlib_disabled so they end up uninserted on the next global |
7609 | location list update. Shared libraries not loaded by the user | |
7610 | aren't handled here -- they're already handled in | |
7611 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7612 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7613 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7614 | main objfile). */ | |
7615 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7616 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7617 | return; |
7618 | ||
7619 | ALL_BREAKPOINTS (b) | |
7620 | { | |
7621 | struct bp_location *loc; | |
7622 | int bp_modified = 0; | |
7623 | ||
7624 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7625 | continue; | |
7626 | ||
7627 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7628 | { | |
7629 | CORE_ADDR loc_addr = loc->address; | |
7630 | ||
7631 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7632 | && loc->loc_type != bp_loc_software_breakpoint) | |
7633 | continue; | |
7634 | ||
7635 | if (loc->shlib_disabled != 0) | |
7636 | continue; | |
7637 | ||
7638 | if (objfile->pspace != loc->pspace) | |
7639 | continue; | |
7640 | ||
7641 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7642 | && loc->loc_type != bp_loc_software_breakpoint) | |
7643 | continue; | |
7644 | ||
7645 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7646 | { | |
7647 | loc->shlib_disabled = 1; | |
08351840 PA |
7648 | /* At this point, we don't know whether the object was |
7649 | unmapped from the inferior or not, so leave the | |
7650 | inserted flag alone. We'll handle failure to | |
7651 | uninsert quietly, in case the object was indeed | |
7652 | unmapped. */ | |
63644780 NB |
7653 | |
7654 | mark_breakpoint_location_modified (loc); | |
7655 | ||
7656 | bp_modified = 1; | |
7657 | } | |
7658 | } | |
7659 | ||
7660 | if (bp_modified) | |
76727919 | 7661 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7662 | } |
7663 | } | |
7664 | ||
ce78b96d JB |
7665 | /* FORK & VFORK catchpoints. */ |
7666 | ||
e29a4733 | 7667 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7668 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7669 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7670 | |
c1fc2657 | 7671 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7672 | { |
e29a4733 PA |
7673 | /* Process id of a child process whose forking triggered this |
7674 | catchpoint. This field is only valid immediately after this | |
7675 | catchpoint has triggered. */ | |
7676 | ptid_t forked_inferior_pid; | |
7677 | }; | |
7678 | ||
4a64f543 MS |
7679 | /* Implement the "insert" breakpoint_ops method for fork |
7680 | catchpoints. */ | |
ce78b96d | 7681 | |
77b06cd7 TJB |
7682 | static int |
7683 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7684 | { |
e99b03dc | 7685 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7686 | } |
7687 | ||
4a64f543 MS |
7688 | /* Implement the "remove" breakpoint_ops method for fork |
7689 | catchpoints. */ | |
ce78b96d JB |
7690 | |
7691 | static int | |
73971819 | 7692 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7693 | { |
e99b03dc | 7694 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7695 | } |
7696 | ||
7697 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7698 | catchpoints. */ | |
7699 | ||
7700 | static int | |
f1310107 | 7701 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7702 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7703 | const struct target_waitstatus *ws) |
ce78b96d | 7704 | { |
e29a4733 PA |
7705 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7706 | ||
f90263c1 TT |
7707 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7708 | return 0; | |
7709 | ||
7710 | c->forked_inferior_pid = ws->value.related_pid; | |
7711 | return 1; | |
ce78b96d JB |
7712 | } |
7713 | ||
4a64f543 MS |
7714 | /* Implement the "print_it" breakpoint_ops method for fork |
7715 | catchpoints. */ | |
ce78b96d JB |
7716 | |
7717 | static enum print_stop_action | |
348d480f | 7718 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7719 | { |
36dfb11c | 7720 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7721 | struct breakpoint *b = bs->breakpoint_at; |
7722 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7723 | |
ce78b96d | 7724 | annotate_catchpoint (b->number); |
f303dbd6 | 7725 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7726 | if (b->disposition == disp_del) |
112e8700 | 7727 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7728 | else |
112e8700 SM |
7729 | uiout->text ("Catchpoint "); |
7730 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7731 | { |
112e8700 SM |
7732 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7733 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7734 | } |
112e8700 SM |
7735 | uiout->field_int ("bkptno", b->number); |
7736 | uiout->text (" (forked process "); | |
e99b03dc | 7737 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7738 | uiout->text ("), "); |
ce78b96d JB |
7739 | return PRINT_SRC_AND_LOC; |
7740 | } | |
7741 | ||
4a64f543 MS |
7742 | /* Implement the "print_one" breakpoint_ops method for fork |
7743 | catchpoints. */ | |
ce78b96d JB |
7744 | |
7745 | static void | |
a6d9a66e | 7746 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7747 | { |
e29a4733 | 7748 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7749 | struct value_print_options opts; |
79a45e25 | 7750 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7751 | |
7752 | get_user_print_options (&opts); | |
7753 | ||
4a64f543 MS |
7754 | /* Field 4, the address, is omitted (which makes the columns not |
7755 | line up too nicely with the headers, but the effect is relatively | |
7756 | readable). */ | |
79a45b7d | 7757 | if (opts.addressprint) |
112e8700 | 7758 | uiout->field_skip ("addr"); |
ce78b96d | 7759 | annotate_field (5); |
112e8700 | 7760 | uiout->text ("fork"); |
d7e15655 | 7761 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7762 | { |
112e8700 | 7763 | uiout->text (", process "); |
e99b03dc | 7764 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7765 | uiout->spaces (1); |
ce78b96d | 7766 | } |
8ac3646f | 7767 | |
112e8700 SM |
7768 | if (uiout->is_mi_like_p ()) |
7769 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7770 | } |
7771 | ||
7772 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7773 | catchpoints. */ | |
7774 | ||
7775 | static void | |
7776 | print_mention_catch_fork (struct breakpoint *b) | |
7777 | { | |
7778 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7779 | } | |
7780 | ||
6149aea9 PA |
7781 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7782 | catchpoints. */ | |
7783 | ||
7784 | static void | |
7785 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7786 | { | |
7787 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7788 | print_recreate_thread (b, fp); |
6149aea9 PA |
7789 | } |
7790 | ||
ce78b96d JB |
7791 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7792 | ||
2060206e | 7793 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7794 | |
4a64f543 MS |
7795 | /* Implement the "insert" breakpoint_ops method for vfork |
7796 | catchpoints. */ | |
ce78b96d | 7797 | |
77b06cd7 TJB |
7798 | static int |
7799 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7800 | { |
e99b03dc | 7801 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7802 | } |
7803 | ||
4a64f543 MS |
7804 | /* Implement the "remove" breakpoint_ops method for vfork |
7805 | catchpoints. */ | |
ce78b96d JB |
7806 | |
7807 | static int | |
73971819 | 7808 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7809 | { |
e99b03dc | 7810 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7811 | } |
7812 | ||
7813 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7814 | catchpoints. */ | |
7815 | ||
7816 | static int | |
f1310107 | 7817 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7818 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7819 | const struct target_waitstatus *ws) |
ce78b96d | 7820 | { |
e29a4733 PA |
7821 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7822 | ||
f90263c1 TT |
7823 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7824 | return 0; | |
7825 | ||
7826 | c->forked_inferior_pid = ws->value.related_pid; | |
7827 | return 1; | |
ce78b96d JB |
7828 | } |
7829 | ||
4a64f543 MS |
7830 | /* Implement the "print_it" breakpoint_ops method for vfork |
7831 | catchpoints. */ | |
ce78b96d JB |
7832 | |
7833 | static enum print_stop_action | |
348d480f | 7834 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7835 | { |
36dfb11c | 7836 | struct ui_out *uiout = current_uiout; |
348d480f | 7837 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7838 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7839 | ||
ce78b96d | 7840 | annotate_catchpoint (b->number); |
f303dbd6 | 7841 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7842 | if (b->disposition == disp_del) |
112e8700 | 7843 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7844 | else |
112e8700 SM |
7845 | uiout->text ("Catchpoint "); |
7846 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7847 | { |
112e8700 SM |
7848 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7849 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7850 | } |
112e8700 SM |
7851 | uiout->field_int ("bkptno", b->number); |
7852 | uiout->text (" (vforked process "); | |
e99b03dc | 7853 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7854 | uiout->text ("), "); |
ce78b96d JB |
7855 | return PRINT_SRC_AND_LOC; |
7856 | } | |
7857 | ||
4a64f543 MS |
7858 | /* Implement the "print_one" breakpoint_ops method for vfork |
7859 | catchpoints. */ | |
ce78b96d JB |
7860 | |
7861 | static void | |
a6d9a66e | 7862 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7863 | { |
e29a4733 | 7864 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7865 | struct value_print_options opts; |
79a45e25 | 7866 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7867 | |
7868 | get_user_print_options (&opts); | |
4a64f543 MS |
7869 | /* Field 4, the address, is omitted (which makes the columns not |
7870 | line up too nicely with the headers, but the effect is relatively | |
7871 | readable). */ | |
79a45b7d | 7872 | if (opts.addressprint) |
112e8700 | 7873 | uiout->field_skip ("addr"); |
ce78b96d | 7874 | annotate_field (5); |
112e8700 | 7875 | uiout->text ("vfork"); |
d7e15655 | 7876 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7877 | { |
112e8700 | 7878 | uiout->text (", process "); |
e99b03dc | 7879 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7880 | uiout->spaces (1); |
ce78b96d | 7881 | } |
8ac3646f | 7882 | |
112e8700 SM |
7883 | if (uiout->is_mi_like_p ()) |
7884 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7885 | } |
7886 | ||
7887 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7888 | catchpoints. */ | |
7889 | ||
7890 | static void | |
7891 | print_mention_catch_vfork (struct breakpoint *b) | |
7892 | { | |
7893 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7894 | } | |
7895 | ||
6149aea9 PA |
7896 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7897 | catchpoints. */ | |
7898 | ||
7899 | static void | |
7900 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7901 | { | |
7902 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7903 | print_recreate_thread (b, fp); |
6149aea9 PA |
7904 | } |
7905 | ||
ce78b96d JB |
7906 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7907 | ||
2060206e | 7908 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7909 | |
edcc5120 | 7910 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7911 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7912 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7913 | ||
c1fc2657 | 7914 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7915 | { |
c1fc2657 | 7916 | ~solib_catchpoint () override; |
edcc5120 TT |
7917 | |
7918 | /* True for "catch load", false for "catch unload". */ | |
7919 | unsigned char is_load; | |
7920 | ||
7921 | /* Regular expression to match, if any. COMPILED is only valid when | |
7922 | REGEX is non-NULL. */ | |
7923 | char *regex; | |
2d7cc5c7 | 7924 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7925 | }; |
7926 | ||
c1fc2657 | 7927 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7928 | { |
c1fc2657 | 7929 | xfree (this->regex); |
edcc5120 TT |
7930 | } |
7931 | ||
7932 | static int | |
7933 | insert_catch_solib (struct bp_location *ignore) | |
7934 | { | |
7935 | return 0; | |
7936 | } | |
7937 | ||
7938 | static int | |
73971819 | 7939 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7940 | { |
7941 | return 0; | |
7942 | } | |
7943 | ||
7944 | static int | |
7945 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7946 | const address_space *aspace, |
edcc5120 TT |
7947 | CORE_ADDR bp_addr, |
7948 | const struct target_waitstatus *ws) | |
7949 | { | |
7950 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7951 | struct breakpoint *other; | |
7952 | ||
7953 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7954 | return 1; | |
7955 | ||
7956 | ALL_BREAKPOINTS (other) | |
7957 | { | |
7958 | struct bp_location *other_bl; | |
7959 | ||
7960 | if (other == bl->owner) | |
7961 | continue; | |
7962 | ||
7963 | if (other->type != bp_shlib_event) | |
7964 | continue; | |
7965 | ||
c1fc2657 | 7966 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7967 | continue; |
7968 | ||
7969 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7970 | { | |
7971 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7972 | return 1; | |
7973 | } | |
7974 | } | |
7975 | ||
7976 | return 0; | |
7977 | } | |
7978 | ||
7979 | static void | |
7980 | check_status_catch_solib (struct bpstats *bs) | |
7981 | { | |
7982 | struct solib_catchpoint *self | |
7983 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7984 | |
7985 | if (self->is_load) | |
7986 | { | |
52941706 | 7987 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7988 | { |
7989 | if (!self->regex | |
2d7cc5c7 | 7990 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7991 | return; |
7992 | } | |
7993 | } | |
7994 | else | |
7995 | { | |
6fb16ce6 | 7996 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7997 | { |
7998 | if (!self->regex | |
6fb16ce6 | 7999 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8000 | return; |
8001 | } | |
8002 | } | |
8003 | ||
8004 | bs->stop = 0; | |
8005 | bs->print_it = print_it_noop; | |
8006 | } | |
8007 | ||
8008 | static enum print_stop_action | |
8009 | print_it_catch_solib (bpstat bs) | |
8010 | { | |
8011 | struct breakpoint *b = bs->breakpoint_at; | |
8012 | struct ui_out *uiout = current_uiout; | |
8013 | ||
8014 | annotate_catchpoint (b->number); | |
f303dbd6 | 8015 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8016 | if (b->disposition == disp_del) |
112e8700 | 8017 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8018 | else |
112e8700 SM |
8019 | uiout->text ("Catchpoint "); |
8020 | uiout->field_int ("bkptno", b->number); | |
8021 | uiout->text ("\n"); | |
8022 | if (uiout->is_mi_like_p ()) | |
8023 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8024 | print_solib_event (1); |
8025 | return PRINT_SRC_AND_LOC; | |
8026 | } | |
8027 | ||
8028 | static void | |
8029 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8030 | { | |
8031 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8032 | struct value_print_options opts; | |
8033 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8034 | |
8035 | get_user_print_options (&opts); | |
8036 | /* Field 4, the address, is omitted (which makes the columns not | |
8037 | line up too nicely with the headers, but the effect is relatively | |
8038 | readable). */ | |
8039 | if (opts.addressprint) | |
8040 | { | |
8041 | annotate_field (4); | |
112e8700 | 8042 | uiout->field_skip ("addr"); |
edcc5120 TT |
8043 | } |
8044 | ||
528e1572 | 8045 | std::string msg; |
edcc5120 TT |
8046 | annotate_field (5); |
8047 | if (self->is_load) | |
8048 | { | |
8049 | if (self->regex) | |
528e1572 | 8050 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8051 | else |
528e1572 | 8052 | msg = _("load of library"); |
edcc5120 TT |
8053 | } |
8054 | else | |
8055 | { | |
8056 | if (self->regex) | |
528e1572 | 8057 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8058 | else |
528e1572 | 8059 | msg = _("unload of library"); |
edcc5120 | 8060 | } |
112e8700 | 8061 | uiout->field_string ("what", msg); |
8ac3646f | 8062 | |
112e8700 SM |
8063 | if (uiout->is_mi_like_p ()) |
8064 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8065 | } |
8066 | ||
8067 | static void | |
8068 | print_mention_catch_solib (struct breakpoint *b) | |
8069 | { | |
8070 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8071 | ||
8072 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8073 | self->is_load ? "load" : "unload"); | |
8074 | } | |
8075 | ||
8076 | static void | |
8077 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8078 | { | |
8079 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8080 | ||
8081 | fprintf_unfiltered (fp, "%s %s", | |
8082 | b->disposition == disp_del ? "tcatch" : "catch", | |
8083 | self->is_load ? "load" : "unload"); | |
8084 | if (self->regex) | |
8085 | fprintf_unfiltered (fp, " %s", self->regex); | |
8086 | fprintf_unfiltered (fp, "\n"); | |
8087 | } | |
8088 | ||
8089 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8090 | ||
91985142 MG |
8091 | /* Shared helper function (MI and CLI) for creating and installing |
8092 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8093 | the events to be caught are load events, otherwise they are | |
8094 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8095 | temporary one. If ENABLED is non-zero the catchpoint is | |
8096 | created in an enabled state. */ | |
edcc5120 | 8097 | |
91985142 | 8098 | void |
a121b7c1 | 8099 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8100 | { |
edcc5120 | 8101 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8102 | |
edcc5120 TT |
8103 | if (!arg) |
8104 | arg = ""; | |
f1735a53 | 8105 | arg = skip_spaces (arg); |
edcc5120 | 8106 | |
36bd8eaa | 8107 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8108 | |
8109 | if (*arg != '\0') | |
8110 | { | |
2d7cc5c7 PA |
8111 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8112 | _("Invalid regexp"))); | |
edcc5120 TT |
8113 | c->regex = xstrdup (arg); |
8114 | } | |
8115 | ||
8116 | c->is_load = is_load; | |
36bd8eaa | 8117 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8118 | &catch_solib_breakpoint_ops); |
8119 | ||
c1fc2657 | 8120 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8121 | |
b270e6f9 | 8122 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8123 | } |
8124 | ||
91985142 MG |
8125 | /* A helper function that does all the work for "catch load" and |
8126 | "catch unload". */ | |
8127 | ||
8128 | static void | |
eb4c3f4a | 8129 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8130 | struct cmd_list_element *command) |
8131 | { | |
8132 | int tempflag; | |
8133 | const int enabled = 1; | |
8134 | ||
8135 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8136 | ||
8137 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8138 | } | |
8139 | ||
edcc5120 | 8140 | static void |
eb4c3f4a | 8141 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8142 | struct cmd_list_element *command) |
8143 | { | |
8144 | catch_load_or_unload (arg, from_tty, 1, command); | |
8145 | } | |
8146 | ||
8147 | static void | |
eb4c3f4a | 8148 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8149 | struct cmd_list_element *command) |
8150 | { | |
8151 | catch_load_or_unload (arg, from_tty, 0, command); | |
8152 | } | |
8153 | ||
346774a9 PA |
8154 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8155 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8156 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8157 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8158 | |
ab04a2af | 8159 | void |
346774a9 PA |
8160 | init_catchpoint (struct breakpoint *b, |
8161 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8162 | const char *cond_string, |
c0a91b2b | 8163 | const struct breakpoint_ops *ops) |
c906108c | 8164 | { |
51abb421 | 8165 | symtab_and_line sal; |
6c95b8df | 8166 | sal.pspace = current_program_space; |
c5aa993b | 8167 | |
28010a5d | 8168 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8169 | |
1b36a34b | 8170 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8171 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8172 | } |
8173 | ||
28010a5d | 8174 | void |
b270e6f9 | 8175 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8176 | { |
b270e6f9 | 8177 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8178 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8179 | if (is_tracepoint (b)) |
8180 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8181 | if (!internal) |
8182 | mention (b); | |
76727919 | 8183 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8184 | |
8185 | if (update_gll) | |
44702360 | 8186 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8187 | } |
8188 | ||
9b70b993 | 8189 | static void |
a6d9a66e | 8190 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8191 | int tempflag, const char *cond_string, |
c0a91b2b | 8192 | const struct breakpoint_ops *ops) |
c906108c | 8193 | { |
b270e6f9 | 8194 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8195 | |
b270e6f9 | 8196 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8197 | |
8198 | c->forked_inferior_pid = null_ptid; | |
8199 | ||
b270e6f9 | 8200 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8201 | } |
8202 | ||
fe798b75 JB |
8203 | /* Exec catchpoints. */ |
8204 | ||
b4d90040 | 8205 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8206 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8207 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8208 | ||
c1fc2657 | 8209 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8210 | { |
c1fc2657 | 8211 | ~exec_catchpoint () override; |
b4d90040 PA |
8212 | |
8213 | /* Filename of a program whose exec triggered this catchpoint. | |
8214 | This field is only valid immediately after this catchpoint has | |
8215 | triggered. */ | |
8216 | char *exec_pathname; | |
8217 | }; | |
8218 | ||
c1fc2657 | 8219 | /* Exec catchpoint destructor. */ |
b4d90040 | 8220 | |
c1fc2657 | 8221 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8222 | { |
c1fc2657 | 8223 | xfree (this->exec_pathname); |
b4d90040 PA |
8224 | } |
8225 | ||
77b06cd7 TJB |
8226 | static int |
8227 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8228 | { |
e99b03dc | 8229 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8230 | } |
c906108c | 8231 | |
fe798b75 | 8232 | static int |
73971819 | 8233 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8234 | { |
e99b03dc | 8235 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8236 | } |
c906108c | 8237 | |
fe798b75 | 8238 | static int |
f1310107 | 8239 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8240 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8241 | const struct target_waitstatus *ws) |
fe798b75 | 8242 | { |
b4d90040 PA |
8243 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8244 | ||
f90263c1 TT |
8245 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8246 | return 0; | |
8247 | ||
8248 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8249 | return 1; | |
fe798b75 | 8250 | } |
c906108c | 8251 | |
fe798b75 | 8252 | static enum print_stop_action |
348d480f | 8253 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8254 | { |
36dfb11c | 8255 | struct ui_out *uiout = current_uiout; |
348d480f | 8256 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8257 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8258 | ||
fe798b75 | 8259 | annotate_catchpoint (b->number); |
f303dbd6 | 8260 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8261 | if (b->disposition == disp_del) |
112e8700 | 8262 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8263 | else |
112e8700 SM |
8264 | uiout->text ("Catchpoint "); |
8265 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8266 | { |
112e8700 SM |
8267 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8268 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8269 | } |
112e8700 SM |
8270 | uiout->field_int ("bkptno", b->number); |
8271 | uiout->text (" (exec'd "); | |
8272 | uiout->field_string ("new-exec", c->exec_pathname); | |
8273 | uiout->text ("), "); | |
36dfb11c | 8274 | |
fe798b75 | 8275 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8276 | } |
8277 | ||
fe798b75 | 8278 | static void |
a6d9a66e | 8279 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8280 | { |
b4d90040 | 8281 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8282 | struct value_print_options opts; |
79a45e25 | 8283 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8284 | |
8285 | get_user_print_options (&opts); | |
8286 | ||
8287 | /* Field 4, the address, is omitted (which makes the columns | |
8288 | not line up too nicely with the headers, but the effect | |
8289 | is relatively readable). */ | |
8290 | if (opts.addressprint) | |
112e8700 | 8291 | uiout->field_skip ("addr"); |
fe798b75 | 8292 | annotate_field (5); |
112e8700 | 8293 | uiout->text ("exec"); |
b4d90040 | 8294 | if (c->exec_pathname != NULL) |
fe798b75 | 8295 | { |
112e8700 SM |
8296 | uiout->text (", program \""); |
8297 | uiout->field_string ("what", c->exec_pathname); | |
8298 | uiout->text ("\" "); | |
fe798b75 | 8299 | } |
8ac3646f | 8300 | |
112e8700 SM |
8301 | if (uiout->is_mi_like_p ()) |
8302 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8303 | } |
8304 | ||
8305 | static void | |
8306 | print_mention_catch_exec (struct breakpoint *b) | |
8307 | { | |
8308 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8309 | } | |
8310 | ||
6149aea9 PA |
8311 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8312 | catchpoints. */ | |
8313 | ||
8314 | static void | |
8315 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8316 | { | |
8317 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8318 | print_recreate_thread (b, fp); |
6149aea9 PA |
8319 | } |
8320 | ||
2060206e | 8321 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8322 | |
c906108c | 8323 | static int |
fba45db2 | 8324 | hw_breakpoint_used_count (void) |
c906108c | 8325 | { |
c906108c | 8326 | int i = 0; |
f1310107 TJB |
8327 | struct breakpoint *b; |
8328 | struct bp_location *bl; | |
c906108c SS |
8329 | |
8330 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8331 | { |
d6b74ac4 | 8332 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8333 | for (bl = b->loc; bl; bl = bl->next) |
8334 | { | |
8335 | /* Special types of hardware breakpoints may use more than | |
8336 | one register. */ | |
348d480f | 8337 | i += b->ops->resources_needed (bl); |
f1310107 | 8338 | } |
c5aa993b | 8339 | } |
c906108c SS |
8340 | |
8341 | return i; | |
8342 | } | |
8343 | ||
a1398e0c PA |
8344 | /* Returns the resources B would use if it were a hardware |
8345 | watchpoint. */ | |
8346 | ||
c906108c | 8347 | static int |
a1398e0c | 8348 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8349 | { |
c906108c | 8350 | int i = 0; |
e09342b5 | 8351 | struct bp_location *bl; |
c906108c | 8352 | |
a1398e0c PA |
8353 | if (!breakpoint_enabled (b)) |
8354 | return 0; | |
8355 | ||
8356 | for (bl = b->loc; bl; bl = bl->next) | |
8357 | { | |
8358 | /* Special types of hardware watchpoints may use more than | |
8359 | one register. */ | |
8360 | i += b->ops->resources_needed (bl); | |
8361 | } | |
8362 | ||
8363 | return i; | |
8364 | } | |
8365 | ||
8366 | /* Returns the sum the used resources of all hardware watchpoints of | |
8367 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8368 | the sum of the used resources of all hardware watchpoints of other | |
8369 | types _not_ TYPE. */ | |
8370 | ||
8371 | static int | |
8372 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8373 | enum bptype type, int *other_type_used) | |
8374 | { | |
8375 | int i = 0; | |
8376 | struct breakpoint *b; | |
8377 | ||
c906108c SS |
8378 | *other_type_used = 0; |
8379 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8380 | { |
a1398e0c PA |
8381 | if (b == except) |
8382 | continue; | |
e09342b5 TJB |
8383 | if (!breakpoint_enabled (b)) |
8384 | continue; | |
8385 | ||
a1398e0c PA |
8386 | if (b->type == type) |
8387 | i += hw_watchpoint_use_count (b); | |
8388 | else if (is_hardware_watchpoint (b)) | |
8389 | *other_type_used = 1; | |
e09342b5 TJB |
8390 | } |
8391 | ||
c906108c SS |
8392 | return i; |
8393 | } | |
8394 | ||
c906108c | 8395 | void |
fba45db2 | 8396 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8397 | { |
c5aa993b | 8398 | struct breakpoint *b; |
c906108c SS |
8399 | |
8400 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8401 | { |
cc60f2e3 | 8402 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8403 | { |
b5de0fa7 | 8404 | b->enable_state = bp_call_disabled; |
44702360 | 8405 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8406 | } |
8407 | } | |
c906108c SS |
8408 | } |
8409 | ||
8410 | void | |
fba45db2 | 8411 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8412 | { |
c5aa993b | 8413 | struct breakpoint *b; |
c906108c SS |
8414 | |
8415 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8416 | { |
cc60f2e3 | 8417 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8418 | { |
b5de0fa7 | 8419 | b->enable_state = bp_enabled; |
44702360 | 8420 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8421 | } |
8422 | } | |
c906108c SS |
8423 | } |
8424 | ||
8bea4e01 UW |
8425 | void |
8426 | disable_breakpoints_before_startup (void) | |
8427 | { | |
6c95b8df | 8428 | current_program_space->executing_startup = 1; |
44702360 | 8429 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8430 | } |
8431 | ||
8432 | void | |
8433 | enable_breakpoints_after_startup (void) | |
8434 | { | |
6c95b8df | 8435 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8436 | breakpoint_re_set (); |
8bea4e01 UW |
8437 | } |
8438 | ||
7c16b83e PA |
8439 | /* Create a new single-step breakpoint for thread THREAD, with no |
8440 | locations. */ | |
c906108c | 8441 | |
7c16b83e PA |
8442 | static struct breakpoint * |
8443 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8444 | { | |
b270e6f9 | 8445 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8446 | |
b270e6f9 | 8447 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8448 | &momentary_breakpoint_ops); |
8449 | ||
8450 | b->disposition = disp_donttouch; | |
8451 | b->frame_id = null_frame_id; | |
8452 | ||
8453 | b->thread = thread; | |
8454 | gdb_assert (b->thread != 0); | |
8455 | ||
b270e6f9 | 8456 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8457 | } |
8458 | ||
8459 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8460 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8461 | frame. */ | |
c906108c | 8462 | |
454dafbd | 8463 | breakpoint_up |
a6d9a66e UW |
8464 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8465 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8466 | { |
52f0bd74 | 8467 | struct breakpoint *b; |
edb3359d | 8468 | |
193facb3 JK |
8469 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8470 | tail-called one. */ | |
8471 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8472 | |
06edf0c0 | 8473 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8474 | b->enable_state = bp_enabled; |
8475 | b->disposition = disp_donttouch; | |
818dd999 | 8476 | b->frame_id = frame_id; |
c906108c | 8477 | |
00431a78 | 8478 | b->thread = inferior_thread ()->global_num; |
c906108c | 8479 | |
44702360 | 8480 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8481 | |
454dafbd | 8482 | return breakpoint_up (b); |
c906108c | 8483 | } |
611c83ae | 8484 | |
06edf0c0 | 8485 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8486 | The new breakpoint will have type TYPE, use OPS as its |
8487 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8488 | |
06edf0c0 PA |
8489 | static struct breakpoint * |
8490 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8491 | enum bptype type, | |
a1aa2221 LM |
8492 | const struct breakpoint_ops *ops, |
8493 | int loc_enabled) | |
e58b0e63 PA |
8494 | { |
8495 | struct breakpoint *copy; | |
8496 | ||
06edf0c0 | 8497 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8498 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8499 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8500 | |
a6d9a66e | 8501 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8502 | copy->loc->requested_address = orig->loc->requested_address; |
8503 | copy->loc->address = orig->loc->address; | |
8504 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8505 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8506 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8507 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8508 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8509 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8510 | copy->frame_id = orig->frame_id; |
8511 | copy->thread = orig->thread; | |
6c95b8df | 8512 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8513 | |
8514 | copy->enable_state = bp_enabled; | |
8515 | copy->disposition = disp_donttouch; | |
8516 | copy->number = internal_breakpoint_number--; | |
8517 | ||
44702360 | 8518 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8519 | return copy; |
8520 | } | |
8521 | ||
06edf0c0 PA |
8522 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8523 | ORIG is NULL. */ | |
8524 | ||
8525 | struct breakpoint * | |
8526 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8527 | { | |
8528 | /* If there's nothing to clone, then return nothing. */ | |
8529 | if (orig == NULL) | |
8530 | return NULL; | |
8531 | ||
a1aa2221 | 8532 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8533 | } |
8534 | ||
454dafbd | 8535 | breakpoint_up |
a6d9a66e UW |
8536 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8537 | enum bptype type) | |
611c83ae PA |
8538 | { |
8539 | struct symtab_and_line sal; | |
8540 | ||
8541 | sal = find_pc_line (pc, 0); | |
8542 | sal.pc = pc; | |
8543 | sal.section = find_pc_overlay (pc); | |
8544 | sal.explicit_pc = 1; | |
8545 | ||
a6d9a66e | 8546 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8547 | } |
c906108c | 8548 | \f |
c5aa993b | 8549 | |
c906108c SS |
8550 | /* Tell the user we have just set a breakpoint B. */ |
8551 | ||
8552 | static void | |
fba45db2 | 8553 | mention (struct breakpoint *b) |
c906108c | 8554 | { |
348d480f | 8555 | b->ops->print_mention (b); |
2d33446d | 8556 | current_uiout->text ("\n"); |
c906108c | 8557 | } |
c906108c | 8558 | \f |
c5aa993b | 8559 | |
1a853c52 PA |
8560 | static int bp_loc_is_permanent (struct bp_location *loc); |
8561 | ||
0d381245 | 8562 | static struct bp_location * |
39d61571 | 8563 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8564 | const struct symtab_and_line *sal) |
8565 | { | |
8566 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8567 | CORE_ADDR adjusted_address; |
8568 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8569 | ||
8570 | if (loc_gdbarch == NULL) | |
8571 | loc_gdbarch = b->gdbarch; | |
8572 | ||
8573 | /* Adjust the breakpoint's address prior to allocating a location. | |
8574 | Once we call allocate_bp_location(), that mostly uninitialized | |
8575 | location will be placed on the location chain. Adjustment of the | |
8576 | breakpoint may cause target_read_memory() to be called and we do | |
8577 | not want its scan of the location chain to find a breakpoint and | |
8578 | location that's only been partially initialized. */ | |
8579 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8580 | sal->pc, b->type); | |
0d381245 | 8581 | |
d30113d4 | 8582 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8583 | loc = allocate_bp_location (b); |
d30113d4 JK |
8584 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8585 | tmp = &((*tmp)->next)) | |
0d381245 | 8586 | ; |
d30113d4 | 8587 | loc->next = *tmp; |
0d381245 | 8588 | *tmp = loc; |
3742cc8b | 8589 | |
0d381245 | 8590 | loc->requested_address = sal->pc; |
3742cc8b | 8591 | loc->address = adjusted_address; |
6c95b8df | 8592 | loc->pspace = sal->pspace; |
935676c9 | 8593 | loc->probe.prob = sal->prob; |
729662a5 | 8594 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8595 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8596 | loc->section = sal->section; |
3742cc8b | 8597 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8598 | loc->line_number = sal->line; |
2f202fde | 8599 | loc->symtab = sal->symtab; |
4a27f119 | 8600 | loc->symbol = sal->symbol; |
3467ec66 PA |
8601 | loc->msymbol = sal->msymbol; |
8602 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8603 | |
0e30163f JK |
8604 | set_breakpoint_location_function (loc, |
8605 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8606 | |
6ae88661 LM |
8607 | /* While by definition, permanent breakpoints are already present in the |
8608 | code, we don't mark the location as inserted. Normally one would expect | |
8609 | that GDB could rely on that breakpoint instruction to stop the program, | |
8610 | thus removing the need to insert its own breakpoint, except that executing | |
8611 | the breakpoint instruction can kill the target instead of reporting a | |
8612 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8613 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8614 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8615 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8616 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8617 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8618 | it manually increments the PC, thus avoiding executing the breakpoint | |
8619 | instruction.) */ | |
1a853c52 | 8620 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8621 | loc->permanent = 1; |
1a853c52 | 8622 | |
0d381245 VP |
8623 | return loc; |
8624 | } | |
514f746b AR |
8625 | \f |
8626 | ||
1cf4d951 | 8627 | /* See breakpoint.h. */ |
514f746b | 8628 | |
1cf4d951 PA |
8629 | int |
8630 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8631 | { |
8632 | int len; | |
8633 | CORE_ADDR addr; | |
1afeeb75 | 8634 | const gdb_byte *bpoint; |
514f746b AR |
8635 | gdb_byte *target_mem; |
8636 | ||
1cf4d951 PA |
8637 | addr = address; |
8638 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8639 | ||
8640 | /* Software breakpoints unsupported? */ | |
8641 | if (bpoint == NULL) | |
8642 | return 0; | |
8643 | ||
224c3ddb | 8644 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8645 | |
8646 | /* Enable the automatic memory restoration from breakpoints while | |
8647 | we read the memory. Otherwise we could say about our temporary | |
8648 | breakpoints they are permanent. */ | |
cb85b21b TT |
8649 | scoped_restore restore_memory |
8650 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8651 | |
8652 | if (target_read_memory (address, target_mem, len) == 0 | |
8653 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8654 | return 1; |
1cf4d951 | 8655 | |
cb85b21b | 8656 | return 0; |
1cf4d951 PA |
8657 | } |
8658 | ||
8659 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8660 | return 0 otherwise. */ | |
8661 | ||
8662 | static int | |
8663 | bp_loc_is_permanent (struct bp_location *loc) | |
8664 | { | |
514f746b AR |
8665 | gdb_assert (loc != NULL); |
8666 | ||
244558af LM |
8667 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8668 | attempt to read from the addresses the locations of these breakpoint types | |
8669 | point to. program_breakpoint_here_p, below, will attempt to read | |
8670 | memory. */ | |
8671 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8672 | return 0; | |
8673 | ||
5ed8105e | 8674 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8675 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8676 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8677 | } |
8678 | ||
e7e0cddf SS |
8679 | /* Build a command list for the dprintf corresponding to the current |
8680 | settings of the dprintf style options. */ | |
8681 | ||
8682 | static void | |
8683 | update_dprintf_command_list (struct breakpoint *b) | |
8684 | { | |
8685 | char *dprintf_args = b->extra_string; | |
8686 | char *printf_line = NULL; | |
8687 | ||
8688 | if (!dprintf_args) | |
8689 | return; | |
8690 | ||
8691 | dprintf_args = skip_spaces (dprintf_args); | |
8692 | ||
8693 | /* Allow a comma, as it may have terminated a location, but don't | |
8694 | insist on it. */ | |
8695 | if (*dprintf_args == ',') | |
8696 | ++dprintf_args; | |
8697 | dprintf_args = skip_spaces (dprintf_args); | |
8698 | ||
8699 | if (*dprintf_args != '"') | |
8700 | error (_("Bad format string, missing '\"'.")); | |
8701 | ||
d3ce09f5 | 8702 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8703 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8704 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8705 | { |
8706 | if (!dprintf_function) | |
8707 | error (_("No function supplied for dprintf call")); | |
8708 | ||
8709 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8710 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8711 | dprintf_function, | |
8712 | dprintf_channel, | |
8713 | dprintf_args); | |
8714 | else | |
8715 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8716 | dprintf_function, | |
8717 | dprintf_args); | |
8718 | } | |
d3ce09f5 SS |
8719 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8720 | { | |
8721 | if (target_can_run_breakpoint_commands ()) | |
8722 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8723 | else | |
8724 | { | |
8725 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8726 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8727 | } | |
8728 | } | |
e7e0cddf SS |
8729 | else |
8730 | internal_error (__FILE__, __LINE__, | |
8731 | _("Invalid dprintf style.")); | |
8732 | ||
f28045c2 | 8733 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8734 | |
12973681 TT |
8735 | /* Manufacture a printf sequence. */ |
8736 | struct command_line *printf_cmd_line | |
8737 | = new struct command_line (simple_control, printf_line); | |
8738 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8739 | command_lines_deleter ())); | |
e7e0cddf SS |
8740 | } |
8741 | ||
8742 | /* Update all dprintf commands, making their command lists reflect | |
8743 | current style settings. */ | |
8744 | ||
8745 | static void | |
eb4c3f4a | 8746 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8747 | struct cmd_list_element *c) |
8748 | { | |
8749 | struct breakpoint *b; | |
8750 | ||
8751 | ALL_BREAKPOINTS (b) | |
8752 | { | |
8753 | if (b->type == bp_dprintf) | |
8754 | update_dprintf_command_list (b); | |
8755 | } | |
8756 | } | |
c3f6f71d | 8757 | |
f00aae0f KS |
8758 | /* Create a breakpoint with SAL as location. Use LOCATION |
8759 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8760 | as condition expression. If LOCATION is NULL then create an |
8761 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8762 | |
8763 | static void | |
d9b3f62e | 8764 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8765 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8766 | event_location_up &&location, |
e1e01040 PA |
8767 | gdb::unique_xmalloc_ptr<char> filter, |
8768 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8769 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8770 | enum bptype type, enum bpdisp disposition, |
8771 | int thread, int task, int ignore_count, | |
c0a91b2b | 8772 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8773 | int enabled, int internal, unsigned flags, |
8774 | int display_canonical) | |
018d34a4 | 8775 | { |
0d381245 | 8776 | int i; |
018d34a4 VP |
8777 | |
8778 | if (type == bp_hardware_breakpoint) | |
8779 | { | |
fbbd034e AS |
8780 | int target_resources_ok; |
8781 | ||
8782 | i = hw_breakpoint_used_count (); | |
8783 | target_resources_ok = | |
8784 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8785 | i + 1, 0); |
8786 | if (target_resources_ok == 0) | |
8787 | error (_("No hardware breakpoint support in the target.")); | |
8788 | else if (target_resources_ok < 0) | |
8789 | error (_("Hardware breakpoints used exceeds limit.")); | |
8790 | } | |
8791 | ||
6c5b2ebe | 8792 | gdb_assert (!sals.empty ()); |
6c95b8df | 8793 | |
6c5b2ebe | 8794 | for (const auto &sal : sals) |
0d381245 | 8795 | { |
0d381245 VP |
8796 | struct bp_location *loc; |
8797 | ||
8798 | if (from_tty) | |
5af949e3 UW |
8799 | { |
8800 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8801 | if (!loc_gdbarch) | |
8802 | loc_gdbarch = gdbarch; | |
8803 | ||
8804 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8805 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8806 | } |
0d381245 | 8807 | |
6c5b2ebe | 8808 | if (&sal == &sals[0]) |
0d381245 | 8809 | { |
d9b3f62e | 8810 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8811 | b->thread = thread; |
4a306c9a | 8812 | b->task = task; |
855a6e68 | 8813 | |
e1e01040 PA |
8814 | b->cond_string = cond_string.release (); |
8815 | b->extra_string = extra_string.release (); | |
0d381245 | 8816 | b->ignore_count = ignore_count; |
41447f92 | 8817 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8818 | b->disposition = disposition; |
6c95b8df | 8819 | |
44f238bb PA |
8820 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8821 | b->loc->inserted = 1; | |
8822 | ||
0fb4aa4b PA |
8823 | if (type == bp_static_tracepoint) |
8824 | { | |
d9b3f62e | 8825 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8826 | struct static_tracepoint_marker marker; |
8827 | ||
983af33b | 8828 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8829 | { |
8830 | /* We already know the marker exists, otherwise, we | |
8831 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8832 | const char *p |
8833 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8834 | const char *endp; |
0fb4aa4b | 8835 | |
f1735a53 | 8836 | p = skip_spaces (p); |
0fb4aa4b | 8837 | |
f1735a53 | 8838 | endp = skip_to_space (p); |
0fb4aa4b | 8839 | |
5d9310c4 | 8840 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8841 | |
3e43a32a MS |
8842 | printf_filtered (_("Probed static tracepoint " |
8843 | "marker \"%s\"\n"), | |
5d9310c4 | 8844 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8845 | } |
8846 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8847 | { | |
5d9310c4 | 8848 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8849 | |
3e43a32a MS |
8850 | printf_filtered (_("Probed static tracepoint " |
8851 | "marker \"%s\"\n"), | |
5d9310c4 | 8852 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8853 | } |
8854 | else | |
3e43a32a MS |
8855 | warning (_("Couldn't determine the static " |
8856 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8857 | } |
8858 | ||
0d381245 VP |
8859 | loc = b->loc; |
8860 | } | |
8861 | else | |
018d34a4 | 8862 | { |
39d61571 | 8863 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8864 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8865 | loc->inserted = 1; | |
0d381245 VP |
8866 | } |
8867 | ||
8868 | if (b->cond_string) | |
8869 | { | |
bbc13ae3 KS |
8870 | const char *arg = b->cond_string; |
8871 | ||
1bb9788d TT |
8872 | loc->cond = parse_exp_1 (&arg, loc->address, |
8873 | block_for_pc (loc->address), 0); | |
0d381245 | 8874 | if (*arg) |
588ae58c | 8875 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8876 | } |
e7e0cddf SS |
8877 | |
8878 | /* Dynamic printf requires and uses additional arguments on the | |
8879 | command line, otherwise it's an error. */ | |
8880 | if (type == bp_dprintf) | |
8881 | { | |
8882 | if (b->extra_string) | |
8883 | update_dprintf_command_list (b); | |
8884 | else | |
8885 | error (_("Format string required")); | |
8886 | } | |
8887 | else if (b->extra_string) | |
588ae58c | 8888 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8889 | } |
018d34a4 | 8890 | |
56435ebe | 8891 | b->display_canonical = display_canonical; |
f00aae0f | 8892 | if (location != NULL) |
d28cd78a | 8893 | b->location = std::move (location); |
018d34a4 | 8894 | else |
d28cd78a | 8895 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8896 | b->filter = filter.release (); |
d9b3f62e | 8897 | } |
018d34a4 | 8898 | |
d9b3f62e PA |
8899 | static void |
8900 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8901 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8902 | event_location_up &&location, |
e1e01040 PA |
8903 | gdb::unique_xmalloc_ptr<char> filter, |
8904 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8905 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8906 | enum bptype type, enum bpdisp disposition, |
8907 | int thread, int task, int ignore_count, | |
c0a91b2b | 8908 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8909 | int enabled, int internal, unsigned flags, |
8910 | int display_canonical) | |
d9b3f62e | 8911 | { |
a5e364af | 8912 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8913 | |
a5e364af | 8914 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8915 | sals, std::move (location), |
e1e01040 PA |
8916 | std::move (filter), |
8917 | std::move (cond_string), | |
8918 | std::move (extra_string), | |
d9b3f62e PA |
8919 | type, disposition, |
8920 | thread, task, ignore_count, | |
8921 | ops, from_tty, | |
44f238bb PA |
8922 | enabled, internal, flags, |
8923 | display_canonical); | |
d9b3f62e | 8924 | |
b270e6f9 | 8925 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8926 | } |
8927 | ||
8928 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8929 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8930 | value. COND_STRING, if not NULL, specified the condition to be | |
8931 | used for all breakpoints. Essentially the only case where | |
8932 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8933 | function. In that case, it's still not possible to specify | |
8934 | separate conditions for different overloaded functions, so | |
8935 | we take just a single condition string. | |
8936 | ||
c3f6f71d | 8937 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8938 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8939 | array contents). If the function fails (error() is called), the |
8940 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8941 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8942 | |
8943 | static void | |
8cdf0e15 | 8944 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8945 | struct linespec_result *canonical, |
e1e01040 PA |
8946 | gdb::unique_xmalloc_ptr<char> cond_string, |
8947 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8948 | enum bptype type, enum bpdisp disposition, |
8949 | int thread, int task, int ignore_count, | |
c0a91b2b | 8950 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8951 | int enabled, int internal, unsigned flags) |
c906108c | 8952 | { |
f8eba3c6 | 8953 | if (canonical->pre_expanded) |
6c5b2ebe | 8954 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8955 | |
6c5b2ebe | 8956 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8957 | { |
f00aae0f | 8958 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8959 | 'break', without arguments. */ |
ffc2605c | 8960 | event_location_up location |
f00aae0f | 8961 | = (canonical->location != NULL |
8e9e35b1 | 8962 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8963 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8964 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8965 | |
6c5b2ebe | 8966 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8967 | std::move (location), |
e1e01040 PA |
8968 | std::move (filter_string), |
8969 | std::move (cond_string), | |
8970 | std::move (extra_string), | |
e7e0cddf | 8971 | type, disposition, |
84f4c1fe | 8972 | thread, task, ignore_count, ops, |
44f238bb | 8973 | from_tty, enabled, internal, flags, |
56435ebe | 8974 | canonical->special_display); |
c3f6f71d | 8975 | } |
c3f6f71d | 8976 | } |
c906108c | 8977 | |
f00aae0f | 8978 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8979 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8980 | addresses found. LOCATION points to the end of the SAL (for |
8981 | linespec locations). | |
9998af43 TJB |
8982 | |
8983 | The array and the line spec strings are allocated on the heap, it is | |
8984 | the caller's responsibility to free them. */ | |
c906108c | 8985 | |
b9362cc7 | 8986 | static void |
f00aae0f | 8987 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8988 | struct linespec_result *canonical) |
c3f6f71d | 8989 | { |
f00aae0f KS |
8990 | struct symtab_and_line cursal; |
8991 | ||
8992 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8993 | { | |
a20714ff | 8994 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8995 | |
a20714ff | 8996 | if (spec == NULL) |
f00aae0f KS |
8997 | { |
8998 | /* The last displayed codepoint, if it's valid, is our default | |
8999 | breakpoint address. */ | |
9000 | if (last_displayed_sal_is_valid ()) | |
9001 | { | |
f00aae0f KS |
9002 | /* Set sal's pspace, pc, symtab, and line to the values |
9003 | corresponding to the last call to print_frame_info. | |
9004 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9005 | as the breakpoint line number is inappropriate otherwise. | |
9006 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9007 | symtab_and_line sal = get_last_displayed_sal (); |
9008 | CORE_ADDR pc = sal.pc; | |
9009 | ||
f00aae0f KS |
9010 | sal = find_pc_line (pc, 0); |
9011 | ||
9012 | /* "break" without arguments is equivalent to "break *PC" | |
9013 | where PC is the last displayed codepoint's address. So | |
9014 | make sure to set sal.explicit_pc to prevent GDB from | |
9015 | trying to expand the list of sals to include all other | |
9016 | instances with the same symtab and line. */ | |
9017 | sal.pc = pc; | |
9018 | sal.explicit_pc = 1; | |
9019 | ||
6c5b2ebe PA |
9020 | struct linespec_sals lsal; |
9021 | lsal.sals = {sal}; | |
f00aae0f KS |
9022 | lsal.canonical = NULL; |
9023 | ||
6c5b2ebe | 9024 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9025 | return; |
9026 | } | |
9027 | else | |
9028 | error (_("No default breakpoint address now.")); | |
c906108c | 9029 | } |
c906108c | 9030 | } |
f00aae0f KS |
9031 | |
9032 | /* Force almost all breakpoints to be in terms of the | |
9033 | current_source_symtab (which is decode_line_1's default). | |
9034 | This should produce the results we want almost all of the | |
9035 | time while leaving default_breakpoint_* alone. | |
9036 | ||
9037 | ObjC: However, don't match an Objective-C method name which | |
9038 | may have a '+' or '-' succeeded by a '['. */ | |
9039 | cursal = get_current_source_symtab_and_line (); | |
9040 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9041 | { |
a20714ff | 9042 | const char *spec = NULL; |
cc80f267 | 9043 | |
f00aae0f | 9044 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9045 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9046 | |
f00aae0f | 9047 | if (!cursal.symtab |
a20714ff PA |
9048 | || (spec != NULL |
9049 | && strchr ("+-", spec[0]) != NULL | |
9050 | && spec[1] != '[')) | |
f00aae0f | 9051 | { |
c2f4122d | 9052 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9053 | get_last_displayed_symtab (), |
9054 | get_last_displayed_line (), | |
9055 | canonical, NULL, NULL); | |
9056 | return; | |
9057 | } | |
c906108c | 9058 | } |
f00aae0f | 9059 | |
c2f4122d | 9060 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9061 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9062 | } |
c906108c | 9063 | |
c906108c | 9064 | |
c3f6f71d | 9065 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9066 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9067 | |
b9362cc7 | 9068 | static void |
6c5b2ebe | 9069 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9070 | { |
6c5b2ebe PA |
9071 | for (auto &sal : sals) |
9072 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9073 | } |
9074 | ||
7a697b8d SS |
9075 | /* Fast tracepoints may have restrictions on valid locations. For |
9076 | instance, a fast tracepoint using a jump instead of a trap will | |
9077 | likely have to overwrite more bytes than a trap would, and so can | |
9078 | only be placed where the instruction is longer than the jump, or a | |
9079 | multi-instruction sequence does not have a jump into the middle of | |
9080 | it, etc. */ | |
9081 | ||
9082 | static void | |
9083 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9084 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9085 | { |
6c5b2ebe | 9086 | for (const auto &sal : sals) |
7a697b8d | 9087 | { |
f8eba3c6 TT |
9088 | struct gdbarch *sarch; |
9089 | ||
6c5b2ebe | 9090 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9091 | /* We fall back to GDBARCH if there is no architecture |
9092 | associated with SAL. */ | |
9093 | if (sarch == NULL) | |
9094 | sarch = gdbarch; | |
281d762b TT |
9095 | std::string msg; |
9096 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9097 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9098 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9099 | } |
9100 | } | |
9101 | ||
018d34a4 VP |
9102 | /* Given TOK, a string specification of condition and thread, as |
9103 | accepted by the 'break' command, extract the condition | |
9104 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9105 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9106 | If no condition is found, *COND_STRING is set to NULL. |
9107 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9108 | |
9109 | static void | |
bbc13ae3 | 9110 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9111 | char **cond_string, int *thread, int *task, |
9112 | char **rest) | |
018d34a4 VP |
9113 | { |
9114 | *cond_string = NULL; | |
9115 | *thread = -1; | |
ed1d1739 KS |
9116 | *task = 0; |
9117 | *rest = NULL; | |
9118 | ||
018d34a4 VP |
9119 | while (tok && *tok) |
9120 | { | |
bbc13ae3 | 9121 | const char *end_tok; |
018d34a4 | 9122 | int toklen; |
bbc13ae3 KS |
9123 | const char *cond_start = NULL; |
9124 | const char *cond_end = NULL; | |
cc59ec59 | 9125 | |
f1735a53 | 9126 | tok = skip_spaces (tok); |
e7e0cddf SS |
9127 | |
9128 | if ((*tok == '"' || *tok == ',') && rest) | |
9129 | { | |
9130 | *rest = savestring (tok, strlen (tok)); | |
9131 | return; | |
9132 | } | |
9133 | ||
f1735a53 | 9134 | end_tok = skip_to_space (tok); |
d634f2de | 9135 | |
018d34a4 | 9136 | toklen = end_tok - tok; |
d634f2de | 9137 | |
018d34a4 VP |
9138 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9139 | { | |
9140 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9141 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9142 | cond_end = tok; |
d634f2de | 9143 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9144 | } |
9145 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9146 | { | |
5d5658a1 PA |
9147 | const char *tmptok; |
9148 | struct thread_info *thr; | |
d634f2de | 9149 | |
018d34a4 | 9150 | tok = end_tok + 1; |
5d5658a1 | 9151 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9152 | if (tok == tmptok) |
9153 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9154 | *thread = thr->global_num; |
bbc13ae3 | 9155 | tok = tmptok; |
018d34a4 | 9156 | } |
4a306c9a JB |
9157 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9158 | { | |
9159 | char *tmptok; | |
9160 | ||
9161 | tok = end_tok + 1; | |
bbc13ae3 | 9162 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9163 | if (tok == tmptok) |
9164 | error (_("Junk after task keyword.")); | |
9165 | if (!valid_task_id (*task)) | |
b6199126 | 9166 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9167 | tok = tmptok; |
4a306c9a | 9168 | } |
e7e0cddf SS |
9169 | else if (rest) |
9170 | { | |
9171 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9172 | return; |
e7e0cddf | 9173 | } |
018d34a4 VP |
9174 | else |
9175 | error (_("Junk at end of arguments.")); | |
9176 | } | |
9177 | } | |
9178 | ||
0fb4aa4b PA |
9179 | /* Decode a static tracepoint marker spec. */ |
9180 | ||
6c5b2ebe | 9181 | static std::vector<symtab_and_line> |
f00aae0f | 9182 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9183 | { |
f00aae0f KS |
9184 | const char *p = &(*arg_p)[3]; |
9185 | const char *endp; | |
0fb4aa4b | 9186 | |
f1735a53 | 9187 | p = skip_spaces (p); |
0fb4aa4b | 9188 | |
f1735a53 | 9189 | endp = skip_to_space (p); |
0fb4aa4b | 9190 | |
81b1e71c | 9191 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9192 | |
5d9310c4 SM |
9193 | std::vector<static_tracepoint_marker> markers |
9194 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9195 | if (markers.empty ()) | |
81b1e71c TT |
9196 | error (_("No known static tracepoint marker named %s"), |
9197 | marker_str.c_str ()); | |
0fb4aa4b | 9198 | |
6c5b2ebe | 9199 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9200 | sals.reserve (markers.size ()); |
0fb4aa4b | 9201 | |
5d9310c4 | 9202 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9203 | { |
5d9310c4 SM |
9204 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9205 | sal.pc = marker.address; | |
6c5b2ebe | 9206 | sals.push_back (sal); |
5d9310c4 | 9207 | } |
0fb4aa4b | 9208 | |
0fb4aa4b PA |
9209 | *arg_p = endp; |
9210 | return sals; | |
9211 | } | |
9212 | ||
f00aae0f | 9213 | /* See breakpoint.h. */ |
0101ce28 | 9214 | |
8cdf0e15 VP |
9215 | int |
9216 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9217 | const struct event_location *location, |
9218 | const char *cond_string, | |
9219 | int thread, const char *extra_string, | |
f00aae0f | 9220 | int parse_extra, |
0fb4aa4b | 9221 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9222 | int ignore_count, |
9223 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9224 | const struct breakpoint_ops *ops, |
44f238bb PA |
9225 | int from_tty, int enabled, int internal, |
9226 | unsigned flags) | |
c3f6f71d | 9227 | { |
7efd8fc2 | 9228 | struct linespec_result canonical; |
0101ce28 | 9229 | int pending = 0; |
4a306c9a | 9230 | int task = 0; |
86b17b60 | 9231 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9232 | |
348d480f PA |
9233 | gdb_assert (ops != NULL); |
9234 | ||
f00aae0f KS |
9235 | /* If extra_string isn't useful, set it to NULL. */ |
9236 | if (extra_string != NULL && *extra_string == '\0') | |
9237 | extra_string = NULL; | |
9238 | ||
492d29ea | 9239 | TRY |
b78a6381 | 9240 | { |
f00aae0f | 9241 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9242 | } |
492d29ea | 9243 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9244 | { |
492d29ea PA |
9245 | /* If caller is interested in rc value from parse, set |
9246 | value. */ | |
9247 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9248 | { |
05ff989b AC |
9249 | /* If pending breakpoint support is turned off, throw |
9250 | error. */ | |
fa8d40ab JJ |
9251 | |
9252 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9253 | throw_exception (e); |
9254 | ||
9255 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9256 | |
05ff989b AC |
9257 | /* If pending breakpoint support is auto query and the user |
9258 | selects no, then simply return the error code. */ | |
059fb39f | 9259 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9260 | && !nquery (_("Make %s pending on future shared library load? "), |
9261 | bptype_string (type_wanted))) | |
fd9b8c24 | 9262 | return 0; |
fa8d40ab | 9263 | |
05ff989b AC |
9264 | /* At this point, either the user was queried about setting |
9265 | a pending breakpoint and selected yes, or pending | |
9266 | breakpoint behavior is on and thus a pending breakpoint | |
9267 | is defaulted on behalf of the user. */ | |
f00aae0f | 9268 | pending = 1; |
0101ce28 | 9269 | } |
492d29ea PA |
9270 | else |
9271 | throw_exception (e); | |
0101ce28 | 9272 | } |
492d29ea PA |
9273 | END_CATCH |
9274 | ||
6c5b2ebe | 9275 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9276 | return 0; |
c3f6f71d | 9277 | |
c3f6f71d JM |
9278 | /* Resolve all line numbers to PC's and verify that the addresses |
9279 | are ok for the target. */ | |
0101ce28 | 9280 | if (!pending) |
f8eba3c6 | 9281 | { |
6c5b2ebe PA |
9282 | for (auto &lsal : canonical.lsals) |
9283 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9284 | } |
c3f6f71d | 9285 | |
7a697b8d | 9286 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9287 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9288 | { |
6c5b2ebe PA |
9289 | for (const auto &lsal : canonical.lsals) |
9290 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9291 | } |
7a697b8d | 9292 | |
c3f6f71d JM |
9293 | /* Verify that condition can be parsed, before setting any |
9294 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9295 | breakpoint. */ |
0101ce28 | 9296 | if (!pending) |
c3f6f71d | 9297 | { |
e1e01040 PA |
9298 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9299 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9300 | ||
f00aae0f | 9301 | if (parse_extra) |
72b2ff0e | 9302 | { |
0878d0fa | 9303 | char *rest; |
e1e01040 | 9304 | char *cond; |
52d361e1 | 9305 | |
6c5b2ebe | 9306 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9307 | |
0878d0fa YQ |
9308 | /* Here we only parse 'arg' to separate condition |
9309 | from thread number, so parsing in context of first | |
9310 | sal is OK. When setting the breakpoint we'll | |
9311 | re-parse it in context of each sal. */ | |
9312 | ||
6c5b2ebe | 9313 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9314 | &cond, &thread, &task, &rest); |
9315 | cond_string_copy.reset (cond); | |
9316 | extra_string_copy.reset (rest); | |
72b2ff0e | 9317 | } |
2f069f6f | 9318 | else |
72b2ff0e | 9319 | { |
f00aae0f KS |
9320 | if (type_wanted != bp_dprintf |
9321 | && extra_string != NULL && *extra_string != '\0') | |
9322 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9323 | |
9324 | /* Create a private copy of condition string. */ | |
9325 | if (cond_string) | |
e1e01040 | 9326 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9327 | /* Create a private copy of any extra string. */ |
9328 | if (extra_string) | |
e1e01040 | 9329 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9330 | } |
0fb4aa4b | 9331 | |
52d361e1 | 9332 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9333 | std::move (cond_string_copy), |
9334 | std::move (extra_string_copy), | |
9335 | type_wanted, | |
d9b3f62e PA |
9336 | tempflag ? disp_del : disp_donttouch, |
9337 | thread, task, ignore_count, ops, | |
44f238bb | 9338 | from_tty, enabled, internal, flags); |
c906108c | 9339 | } |
0101ce28 JJ |
9340 | else |
9341 | { | |
a5e364af | 9342 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9343 | |
a5e364af | 9344 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9345 | b->location = copy_event_location (location); |
bfccc43c | 9346 | |
f00aae0f KS |
9347 | if (parse_extra) |
9348 | b->cond_string = NULL; | |
e12c7713 MK |
9349 | else |
9350 | { | |
9351 | /* Create a private copy of condition string. */ | |
e1e01040 | 9352 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9353 | b->thread = thread; |
e12c7713 | 9354 | } |
f00aae0f KS |
9355 | |
9356 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9357 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9358 | b->ignore_count = ignore_count; |
0101ce28 | 9359 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9360 | b->condition_not_parsed = 1; |
41447f92 | 9361 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9362 | if ((type_wanted != bp_breakpoint |
9363 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9364 | b->pspace = current_program_space; |
8bea4e01 | 9365 | |
b270e6f9 | 9366 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9367 | } |
9368 | ||
6c5b2ebe | 9369 | if (canonical.lsals.size () > 1) |
95a42b64 | 9370 | { |
3e43a32a MS |
9371 | warning (_("Multiple breakpoints were set.\nUse the " |
9372 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9373 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9374 | } |
9375 | ||
44702360 | 9376 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9377 | |
9378 | return 1; | |
c3f6f71d | 9379 | } |
c906108c | 9380 | |
348d480f | 9381 | /* Set a breakpoint. |
72b2ff0e VP |
9382 | ARG is a string describing breakpoint address, |
9383 | condition, and thread. | |
9384 | FLAG specifies if a breakpoint is hardware on, | |
9385 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9386 | and BP_TEMPFLAG. */ | |
348d480f | 9387 | |
98deb0da | 9388 | static void |
f2fc3015 | 9389 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9390 | { |
72b2ff0e | 9391 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9392 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9393 | ? bp_hardware_breakpoint | |
9394 | : bp_breakpoint); | |
55aa24fb | 9395 | struct breakpoint_ops *ops; |
f00aae0f | 9396 | |
ffc2605c | 9397 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9398 | |
9399 | /* Matching breakpoints on probes. */ | |
5b56227b | 9400 | if (location != NULL |
ffc2605c | 9401 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9402 | ops = &bkpt_probe_breakpoint_ops; |
9403 | else | |
9404 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9405 | |
8cdf0e15 | 9406 | create_breakpoint (get_current_arch (), |
ffc2605c | 9407 | location.get (), |
f00aae0f | 9408 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9409 | tempflag, type_wanted, |
8cdf0e15 VP |
9410 | 0 /* Ignore count */, |
9411 | pending_break_support, | |
55aa24fb | 9412 | ops, |
8cdf0e15 | 9413 | from_tty, |
84f4c1fe | 9414 | 1 /* enabled */, |
44f238bb PA |
9415 | 0 /* internal */, |
9416 | 0); | |
c906108c SS |
9417 | } |
9418 | ||
c906108c SS |
9419 | /* Helper function for break_command_1 and disassemble_command. */ |
9420 | ||
9421 | void | |
fba45db2 | 9422 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9423 | { |
9424 | CORE_ADDR pc; | |
9425 | ||
9426 | if (sal->pc == 0 && sal->symtab != NULL) | |
9427 | { | |
9428 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9429 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9430 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9431 | sal->pc = pc; |
6a048695 | 9432 | |
4a64f543 MS |
9433 | /* If this SAL corresponds to a breakpoint inserted using a line |
9434 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9435 | if (sal->explicit_line) |
059acae7 | 9436 | skip_prologue_sal (sal); |
c906108c SS |
9437 | } |
9438 | ||
9439 | if (sal->section == 0 && sal->symtab != NULL) | |
9440 | { | |
346d1dfe | 9441 | const struct blockvector *bv; |
3977b71f | 9442 | const struct block *b; |
c5aa993b | 9443 | struct symbol *sym; |
c906108c | 9444 | |
43f3e411 DE |
9445 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9446 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9447 | if (bv != NULL) |
9448 | { | |
7f0df278 | 9449 | sym = block_linkage_function (b); |
c906108c SS |
9450 | if (sym != NULL) |
9451 | { | |
eb822aa6 DE |
9452 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9453 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9454 | sym); | |
c906108c SS |
9455 | } |
9456 | else | |
9457 | { | |
4a64f543 MS |
9458 | /* It really is worthwhile to have the section, so we'll |
9459 | just have to look harder. This case can be executed | |
9460 | if we have line numbers but no functions (as can | |
9461 | happen in assembly source). */ | |
c906108c | 9462 | |
5ed8105e | 9463 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9464 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9465 | |
5ed8105e | 9466 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9467 | if (msym.minsym) |
efd66ac6 | 9468 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9469 | } |
9470 | } | |
9471 | } | |
9472 | } | |
9473 | ||
9474 | void | |
0b39b52e | 9475 | break_command (const char *arg, int from_tty) |
c906108c | 9476 | { |
db107f19 | 9477 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9478 | } |
9479 | ||
c906108c | 9480 | void |
0b39b52e | 9481 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9482 | { |
db107f19 | 9483 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9484 | } |
9485 | ||
c906108c | 9486 | static void |
0b39b52e | 9487 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9488 | { |
db107f19 | 9489 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9490 | } |
9491 | ||
9492 | static void | |
0b39b52e | 9493 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9494 | { |
db107f19 | 9495 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9496 | } |
9497 | ||
9498 | static void | |
ee7ddd71 | 9499 | stop_command (const char *arg, int from_tty) |
c906108c | 9500 | { |
a3f17187 | 9501 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9502 | Usage: stop in <function | address>\n\ |
a3f17187 | 9503 | stop at <line>\n")); |
c906108c SS |
9504 | } |
9505 | ||
9506 | static void | |
4495129a | 9507 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9508 | { |
9509 | int badInput = 0; | |
9510 | ||
c5aa993b | 9511 | if (arg == (char *) NULL) |
c906108c SS |
9512 | badInput = 1; |
9513 | else if (*arg != '*') | |
9514 | { | |
4495129a | 9515 | const char *argptr = arg; |
c906108c SS |
9516 | int hasColon = 0; |
9517 | ||
4a64f543 | 9518 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9519 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9520 | function/method name. */ |
c906108c | 9521 | while (*argptr && !hasColon) |
c5aa993b JM |
9522 | { |
9523 | hasColon = (*argptr == ':'); | |
9524 | argptr++; | |
9525 | } | |
c906108c SS |
9526 | |
9527 | if (hasColon) | |
c5aa993b | 9528 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9529 | else |
c5aa993b | 9530 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9531 | } |
9532 | ||
9533 | if (badInput) | |
a3f17187 | 9534 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9535 | else |
db107f19 | 9536 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9537 | } |
9538 | ||
9539 | static void | |
4495129a | 9540 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9541 | { |
9542 | int badInput = 0; | |
9543 | ||
c5aa993b | 9544 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9545 | badInput = 1; |
9546 | else | |
9547 | { | |
4495129a | 9548 | const char *argptr = arg; |
c906108c SS |
9549 | int hasColon = 0; |
9550 | ||
4a64f543 MS |
9551 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9552 | it is probably a line number. */ | |
c906108c | 9553 | while (*argptr && !hasColon) |
c5aa993b JM |
9554 | { |
9555 | hasColon = (*argptr == ':'); | |
9556 | argptr++; | |
9557 | } | |
c906108c SS |
9558 | |
9559 | if (hasColon) | |
c5aa993b | 9560 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9561 | else |
c5aa993b | 9562 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9563 | } |
9564 | ||
9565 | if (badInput) | |
65e65158 | 9566 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9567 | else |
db107f19 | 9568 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9569 | } |
9570 | ||
e7e0cddf SS |
9571 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9572 | with a prewired command list consisting of a single output command, | |
9573 | built from extra arguments supplied on the dprintf command | |
9574 | line. */ | |
9575 | ||
da821c7b | 9576 | static void |
0b39b52e | 9577 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9578 | { |
ffc2605c | 9579 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9580 | |
9581 | /* If non-NULL, ARG should have been advanced past the location; | |
9582 | the next character must be ','. */ | |
9583 | if (arg != NULL) | |
9584 | { | |
9585 | if (arg[0] != ',' || arg[1] == '\0') | |
9586 | error (_("Format string required")); | |
9587 | else | |
9588 | { | |
9589 | /* Skip the comma. */ | |
9590 | ++arg; | |
9591 | } | |
9592 | } | |
9593 | ||
e7e0cddf | 9594 | create_breakpoint (get_current_arch (), |
ffc2605c | 9595 | location.get (), |
f00aae0f | 9596 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9597 | 0, bp_dprintf, |
9598 | 0 /* Ignore count */, | |
9599 | pending_break_support, | |
9600 | &dprintf_breakpoint_ops, | |
9601 | from_tty, | |
9602 | 1 /* enabled */, | |
9603 | 0 /* internal */, | |
9604 | 0); | |
9605 | } | |
9606 | ||
d3ce09f5 | 9607 | static void |
0b39b52e | 9608 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9609 | { |
9610 | error (_("May only run agent-printf on the target")); | |
9611 | } | |
9612 | ||
f1310107 TJB |
9613 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9614 | ranged breakpoints. */ | |
9615 | ||
9616 | static int | |
9617 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9618 | const address_space *aspace, |
09ac7c10 TT |
9619 | CORE_ADDR bp_addr, |
9620 | const struct target_waitstatus *ws) | |
f1310107 | 9621 | { |
09ac7c10 | 9622 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9623 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9624 | return 0; |
9625 | ||
f1310107 TJB |
9626 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9627 | bl->length, aspace, bp_addr); | |
9628 | } | |
9629 | ||
9630 | /* Implement the "resources_needed" breakpoint_ops method for | |
9631 | ranged breakpoints. */ | |
9632 | ||
9633 | static int | |
9634 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9635 | { | |
9636 | return target_ranged_break_num_registers (); | |
9637 | } | |
9638 | ||
9639 | /* Implement the "print_it" breakpoint_ops method for | |
9640 | ranged breakpoints. */ | |
9641 | ||
9642 | static enum print_stop_action | |
348d480f | 9643 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9644 | { |
348d480f | 9645 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9646 | struct bp_location *bl = b->loc; |
79a45e25 | 9647 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9648 | |
9649 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9650 | ||
9651 | /* Ranged breakpoints have only one location. */ | |
9652 | gdb_assert (bl && bl->next == NULL); | |
9653 | ||
9654 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9655 | |
9656 | maybe_print_thread_hit_breakpoint (uiout); | |
9657 | ||
f1310107 | 9658 | if (b->disposition == disp_del) |
112e8700 | 9659 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9660 | else |
112e8700 SM |
9661 | uiout->text ("Ranged breakpoint "); |
9662 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9663 | { |
112e8700 | 9664 | uiout->field_string ("reason", |
f1310107 | 9665 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9666 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9667 | } |
112e8700 SM |
9668 | uiout->field_int ("bkptno", b->number); |
9669 | uiout->text (", "); | |
f1310107 TJB |
9670 | |
9671 | return PRINT_SRC_AND_LOC; | |
9672 | } | |
9673 | ||
9674 | /* Implement the "print_one" breakpoint_ops method for | |
9675 | ranged breakpoints. */ | |
9676 | ||
9677 | static void | |
9678 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9679 | struct bp_location **last_loc) | |
9680 | { | |
9681 | struct bp_location *bl = b->loc; | |
9682 | struct value_print_options opts; | |
79a45e25 | 9683 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9684 | |
9685 | /* Ranged breakpoints have only one location. */ | |
9686 | gdb_assert (bl && bl->next == NULL); | |
9687 | ||
9688 | get_user_print_options (&opts); | |
9689 | ||
9690 | if (opts.addressprint) | |
9691 | /* We don't print the address range here, it will be printed later | |
9692 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9693 | uiout->field_skip ("addr"); |
f1310107 TJB |
9694 | annotate_field (5); |
9695 | print_breakpoint_location (b, bl); | |
9696 | *last_loc = bl; | |
9697 | } | |
9698 | ||
9699 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9700 | ranged breakpoints. */ | |
9701 | ||
9702 | static void | |
9703 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9704 | struct ui_out *uiout) | |
9705 | { | |
9706 | CORE_ADDR address_start, address_end; | |
9707 | struct bp_location *bl = b->loc; | |
d7e74731 | 9708 | string_file stb; |
f1310107 TJB |
9709 | |
9710 | gdb_assert (bl); | |
9711 | ||
9712 | address_start = bl->address; | |
9713 | address_end = address_start + bl->length - 1; | |
9714 | ||
112e8700 | 9715 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9716 | stb.printf ("[%s, %s]", |
9717 | print_core_address (bl->gdbarch, address_start), | |
9718 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9719 | uiout->field_stream ("addr", stb); |
9720 | uiout->text ("\n"); | |
f1310107 TJB |
9721 | } |
9722 | ||
9723 | /* Implement the "print_mention" breakpoint_ops method for | |
9724 | ranged breakpoints. */ | |
9725 | ||
9726 | static void | |
9727 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9728 | { | |
9729 | struct bp_location *bl = b->loc; | |
79a45e25 | 9730 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9731 | |
9732 | gdb_assert (bl); | |
9733 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9734 | ||
2d33446d TT |
9735 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9736 | b->number, paddress (bl->gdbarch, bl->address), | |
9737 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9738 | } |
9739 | ||
9740 | /* Implement the "print_recreate" breakpoint_ops method for | |
9741 | ranged breakpoints. */ | |
9742 | ||
9743 | static void | |
9744 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9745 | { | |
f00aae0f | 9746 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9747 | event_location_to_string (b->location.get ()), |
9748 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9749 | print_recreate_thread (b, fp); |
f1310107 TJB |
9750 | } |
9751 | ||
9752 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9753 | ||
2060206e | 9754 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9755 | |
9756 | /* Find the address where the end of the breakpoint range should be | |
9757 | placed, given the SAL of the end of the range. This is so that if | |
9758 | the user provides a line number, the end of the range is set to the | |
9759 | last instruction of the given line. */ | |
9760 | ||
9761 | static CORE_ADDR | |
9762 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9763 | { | |
9764 | CORE_ADDR end; | |
9765 | ||
9766 | /* If the user provided a PC value, use it. Otherwise, | |
9767 | find the address of the end of the given location. */ | |
9768 | if (sal.explicit_pc) | |
9769 | end = sal.pc; | |
9770 | else | |
9771 | { | |
9772 | int ret; | |
9773 | CORE_ADDR start; | |
9774 | ||
9775 | ret = find_line_pc_range (sal, &start, &end); | |
9776 | if (!ret) | |
9777 | error (_("Could not find location of the end of the range.")); | |
9778 | ||
9779 | /* find_line_pc_range returns the start of the next line. */ | |
9780 | end--; | |
9781 | } | |
9782 | ||
9783 | return end; | |
9784 | } | |
9785 | ||
9786 | /* Implement the "break-range" CLI command. */ | |
9787 | ||
9788 | static void | |
0b39b52e | 9789 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9790 | { |
f2fc3015 | 9791 | const char *arg_start; |
f1310107 TJB |
9792 | struct linespec_result canonical_start, canonical_end; |
9793 | int bp_count, can_use_bp, length; | |
9794 | CORE_ADDR end; | |
9795 | struct breakpoint *b; | |
f1310107 TJB |
9796 | |
9797 | /* We don't support software ranged breakpoints. */ | |
9798 | if (target_ranged_break_num_registers () < 0) | |
9799 | error (_("This target does not support hardware ranged breakpoints.")); | |
9800 | ||
9801 | bp_count = hw_breakpoint_used_count (); | |
9802 | bp_count += target_ranged_break_num_registers (); | |
9803 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9804 | bp_count, 0); | |
9805 | if (can_use_bp < 0) | |
9806 | error (_("Hardware breakpoints used exceeds limit.")); | |
9807 | ||
f8eba3c6 | 9808 | arg = skip_spaces (arg); |
f1310107 TJB |
9809 | if (arg == NULL || arg[0] == '\0') |
9810 | error(_("No address range specified.")); | |
9811 | ||
f8eba3c6 | 9812 | arg_start = arg; |
ffc2605c TT |
9813 | event_location_up start_location = string_to_event_location (&arg, |
9814 | current_language); | |
9815 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9816 | |
9817 | if (arg[0] != ',') | |
9818 | error (_("Too few arguments.")); | |
6c5b2ebe | 9819 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9820 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9821 | |
6c5b2ebe | 9822 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9823 | |
6c5b2ebe PA |
9824 | if (canonical_start.lsals.size () > 1 |
9825 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9826 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9827 | ||
6c5b2ebe | 9828 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9829 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9830 | |
9831 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9832 | arg = skip_spaces (arg); |
f1310107 TJB |
9833 | |
9834 | /* Parse the end location. */ | |
9835 | ||
f1310107 TJB |
9836 | arg_start = arg; |
9837 | ||
f8eba3c6 | 9838 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9839 | parse_breakpoint_sals because we need to specify the start location's |
9840 | symtab and line as the default symtab and line for the end of the | |
9841 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9842 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9843 | event_location_up end_location = string_to_event_location (&arg, |
9844 | current_language); | |
9845 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9846 | sal_start.symtab, sal_start.line, |
9847 | &canonical_end, NULL, NULL); | |
9848 | ||
6c5b2ebe | 9849 | if (canonical_end.lsals.empty ()) |
f1310107 | 9850 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9851 | |
6c5b2ebe PA |
9852 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9853 | if (canonical_end.lsals.size () > 1 | |
9854 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9855 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9856 | ||
6c5b2ebe | 9857 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9858 | |
9859 | end = find_breakpoint_range_end (sal_end); | |
9860 | if (sal_start.pc > end) | |
177b42fe | 9861 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9862 | |
9863 | length = end - sal_start.pc + 1; | |
9864 | if (length < 0) | |
9865 | /* Length overflowed. */ | |
9866 | error (_("Address range too large.")); | |
9867 | else if (length == 1) | |
9868 | { | |
9869 | /* This range is simple enough to be handled by | |
9870 | the `hbreak' command. */ | |
81b1e71c | 9871 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9872 | |
9873 | return; | |
9874 | } | |
9875 | ||
9876 | /* Now set up the breakpoint. */ | |
9877 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9878 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9879 | set_breakpoint_count (breakpoint_count + 1); |
9880 | b->number = breakpoint_count; | |
9881 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9882 | b->location = std::move (start_location); |
9883 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9884 | b->loc->length = length; |
9885 | ||
f1310107 | 9886 | mention (b); |
76727919 | 9887 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9888 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9889 | } |
9890 | ||
4a64f543 MS |
9891 | /* Return non-zero if EXP is verified as constant. Returned zero |
9892 | means EXP is variable. Also the constant detection may fail for | |
9893 | some constant expressions and in such case still falsely return | |
9894 | zero. */ | |
2e6e3d9c | 9895 | |
65d79d4b SDJ |
9896 | static int |
9897 | watchpoint_exp_is_const (const struct expression *exp) | |
9898 | { | |
9899 | int i = exp->nelts; | |
9900 | ||
9901 | while (i > 0) | |
9902 | { | |
9903 | int oplenp, argsp; | |
9904 | ||
9905 | /* We are only interested in the descriptor of each element. */ | |
9906 | operator_length (exp, i, &oplenp, &argsp); | |
9907 | i -= oplenp; | |
9908 | ||
9909 | switch (exp->elts[i].opcode) | |
9910 | { | |
9911 | case BINOP_ADD: | |
9912 | case BINOP_SUB: | |
9913 | case BINOP_MUL: | |
9914 | case BINOP_DIV: | |
9915 | case BINOP_REM: | |
9916 | case BINOP_MOD: | |
9917 | case BINOP_LSH: | |
9918 | case BINOP_RSH: | |
9919 | case BINOP_LOGICAL_AND: | |
9920 | case BINOP_LOGICAL_OR: | |
9921 | case BINOP_BITWISE_AND: | |
9922 | case BINOP_BITWISE_IOR: | |
9923 | case BINOP_BITWISE_XOR: | |
9924 | case BINOP_EQUAL: | |
9925 | case BINOP_NOTEQUAL: | |
9926 | case BINOP_LESS: | |
9927 | case BINOP_GTR: | |
9928 | case BINOP_LEQ: | |
9929 | case BINOP_GEQ: | |
9930 | case BINOP_REPEAT: | |
9931 | case BINOP_COMMA: | |
9932 | case BINOP_EXP: | |
9933 | case BINOP_MIN: | |
9934 | case BINOP_MAX: | |
9935 | case BINOP_INTDIV: | |
9936 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9937 | case TERNOP_COND: |
9938 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9939 | |
9940 | case OP_LONG: | |
edd079d9 | 9941 | case OP_FLOAT: |
65d79d4b SDJ |
9942 | case OP_LAST: |
9943 | case OP_COMPLEX: | |
9944 | case OP_STRING: | |
65d79d4b SDJ |
9945 | case OP_ARRAY: |
9946 | case OP_TYPE: | |
608b4967 TT |
9947 | case OP_TYPEOF: |
9948 | case OP_DECLTYPE: | |
6e72ca20 | 9949 | case OP_TYPEID: |
65d79d4b SDJ |
9950 | case OP_NAME: |
9951 | case OP_OBJC_NSSTRING: | |
9952 | ||
9953 | case UNOP_NEG: | |
9954 | case UNOP_LOGICAL_NOT: | |
9955 | case UNOP_COMPLEMENT: | |
9956 | case UNOP_ADDR: | |
9957 | case UNOP_HIGH: | |
aeaa2474 | 9958 | case UNOP_CAST: |
9eaf6705 TT |
9959 | |
9960 | case UNOP_CAST_TYPE: | |
9961 | case UNOP_REINTERPRET_CAST: | |
9962 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9963 | /* Unary, binary and ternary operators: We have to check |
9964 | their operands. If they are constant, then so is the | |
9965 | result of that operation. For instance, if A and B are | |
9966 | determined to be constants, then so is "A + B". | |
9967 | ||
9968 | UNOP_IND is one exception to the rule above, because the | |
9969 | value of *ADDR is not necessarily a constant, even when | |
9970 | ADDR is. */ | |
65d79d4b SDJ |
9971 | break; |
9972 | ||
9973 | case OP_VAR_VALUE: | |
9974 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9975 | |
65d79d4b | 9976 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9977 | possible that a buggy compiler could mark a variable as |
9978 | constant even when it is not, and TYPE_CONST would return | |
9979 | true in this case, while SYMBOL_CLASS wouldn't. | |
9980 | ||
9981 | We also have to check for function symbols because they | |
9982 | are always constant. */ | |
65d79d4b SDJ |
9983 | { |
9984 | struct symbol *s = exp->elts[i + 2].symbol; | |
9985 | ||
9986 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9987 | && SYMBOL_CLASS (s) != LOC_CONST | |
9988 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9989 | return 0; | |
9990 | break; | |
9991 | } | |
9992 | ||
9993 | /* The default action is to return 0 because we are using | |
9994 | the optimistic approach here: If we don't know something, | |
9995 | then it is not a constant. */ | |
9996 | default: | |
9997 | return 0; | |
9998 | } | |
9999 | } | |
10000 | ||
10001 | return 1; | |
10002 | } | |
10003 | ||
c1fc2657 | 10004 | /* Watchpoint destructor. */ |
3a5c3e22 | 10005 | |
c1fc2657 | 10006 | watchpoint::~watchpoint () |
3a5c3e22 | 10007 | { |
c1fc2657 SM |
10008 | xfree (this->exp_string); |
10009 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10010 | } |
10011 | ||
348d480f PA |
10012 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10013 | ||
10014 | static void | |
10015 | re_set_watchpoint (struct breakpoint *b) | |
10016 | { | |
3a5c3e22 PA |
10017 | struct watchpoint *w = (struct watchpoint *) b; |
10018 | ||
348d480f PA |
10019 | /* Watchpoint can be either on expression using entirely global |
10020 | variables, or it can be on local variables. | |
10021 | ||
10022 | Watchpoints of the first kind are never auto-deleted, and even | |
10023 | persist across program restarts. Since they can use variables | |
10024 | from shared libraries, we need to reparse expression as libraries | |
10025 | are loaded and unloaded. | |
10026 | ||
10027 | Watchpoints on local variables can also change meaning as result | |
10028 | of solib event. For example, if a watchpoint uses both a local | |
10029 | and a global variables in expression, it's a local watchpoint, | |
10030 | but unloading of a shared library will make the expression | |
10031 | invalid. This is not a very common use case, but we still | |
10032 | re-evaluate expression, to avoid surprises to the user. | |
10033 | ||
10034 | Note that for local watchpoints, we re-evaluate it only if | |
10035 | watchpoints frame id is still valid. If it's not, it means the | |
10036 | watchpoint is out of scope and will be deleted soon. In fact, | |
10037 | I'm not sure we'll ever be called in this case. | |
10038 | ||
10039 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10040 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10041 | |
3a5c3e22 PA |
10042 | Don't do anything about disabled watchpoints, since they will be |
10043 | reevaluated again when enabled. */ | |
10044 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10045 | } |
10046 | ||
77b06cd7 TJB |
10047 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10048 | ||
10049 | static int | |
10050 | insert_watchpoint (struct bp_location *bl) | |
10051 | { | |
3a5c3e22 PA |
10052 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10053 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10054 | |
10055 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10056 | w->cond_exp.get ()); |
77b06cd7 TJB |
10057 | } |
10058 | ||
10059 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10060 | ||
10061 | static int | |
73971819 | 10062 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10063 | { |
3a5c3e22 PA |
10064 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10065 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10066 | |
10067 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10068 | w->cond_exp.get ()); |
e09342b5 TJB |
10069 | } |
10070 | ||
e09342b5 | 10071 | static int |
348d480f | 10072 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10073 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10074 | const struct target_waitstatus *ws) |
e09342b5 | 10075 | { |
348d480f | 10076 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10077 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10078 | |
348d480f PA |
10079 | /* Continuable hardware watchpoints are treated as non-existent if the |
10080 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10081 | some data address). Otherwise gdb won't stop on a break instruction | |
10082 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10083 | been defined. Also skip watchpoints which we know did not trigger | |
10084 | (did not match the data address). */ | |
10085 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10086 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10087 | return 0; |
9c06b0b4 | 10088 | |
348d480f | 10089 | return 1; |
9c06b0b4 TJB |
10090 | } |
10091 | ||
348d480f PA |
10092 | static void |
10093 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10094 | { |
348d480f | 10095 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10096 | |
348d480f | 10097 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10098 | } |
10099 | ||
10100 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10101 | hardware watchpoints. */ |
9c06b0b4 TJB |
10102 | |
10103 | static int | |
348d480f | 10104 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10105 | { |
3a5c3e22 PA |
10106 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10107 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10108 | |
10109 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10110 | } |
10111 | ||
10112 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10113 | hardware watchpoints. */ |
9c06b0b4 TJB |
10114 | |
10115 | static int | |
348d480f | 10116 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10117 | { |
efa80663 PA |
10118 | /* Read and access watchpoints only work with hardware support. */ |
10119 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10120 | } |
10121 | ||
9c06b0b4 | 10122 | static enum print_stop_action |
348d480f | 10123 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10124 | { |
348d480f | 10125 | struct breakpoint *b; |
348d480f | 10126 | enum print_stop_action result; |
3a5c3e22 | 10127 | struct watchpoint *w; |
79a45e25 | 10128 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10129 | |
10130 | gdb_assert (bs->bp_location_at != NULL); | |
10131 | ||
348d480f | 10132 | b = bs->breakpoint_at; |
3a5c3e22 | 10133 | w = (struct watchpoint *) b; |
348d480f | 10134 | |
f303dbd6 PA |
10135 | annotate_watchpoint (b->number); |
10136 | maybe_print_thread_hit_breakpoint (uiout); | |
10137 | ||
d7e74731 PA |
10138 | string_file stb; |
10139 | ||
76f9c9cf | 10140 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10141 | switch (b->type) |
10142 | { | |
348d480f | 10143 | case bp_watchpoint: |
9c06b0b4 | 10144 | case bp_hardware_watchpoint: |
112e8700 SM |
10145 | if (uiout->is_mi_like_p ()) |
10146 | uiout->field_string | |
10147 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10148 | mention (b); |
76f9c9cf | 10149 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10150 | uiout->text ("\nOld value = "); |
850645cf | 10151 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10152 | uiout->field_stream ("old", stb); |
10153 | uiout->text ("\nNew value = "); | |
850645cf | 10154 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10155 | uiout->field_stream ("new", stb); |
10156 | uiout->text ("\n"); | |
348d480f PA |
10157 | /* More than one watchpoint may have been triggered. */ |
10158 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10159 | break; |
10160 | ||
10161 | case bp_read_watchpoint: | |
112e8700 SM |
10162 | if (uiout->is_mi_like_p ()) |
10163 | uiout->field_string | |
10164 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10165 | mention (b); |
76f9c9cf | 10166 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10167 | uiout->text ("\nValue = "); |
850645cf | 10168 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10169 | uiout->field_stream ("value", stb); |
10170 | uiout->text ("\n"); | |
348d480f | 10171 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10172 | break; |
10173 | ||
10174 | case bp_access_watchpoint: | |
348d480f PA |
10175 | if (bs->old_val != NULL) |
10176 | { | |
112e8700 SM |
10177 | if (uiout->is_mi_like_p ()) |
10178 | uiout->field_string | |
10179 | ("reason", | |
348d480f PA |
10180 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10181 | mention (b); | |
76f9c9cf | 10182 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10183 | uiout->text ("\nOld value = "); |
850645cf | 10184 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10185 | uiout->field_stream ("old", stb); |
10186 | uiout->text ("\nNew value = "); | |
348d480f PA |
10187 | } |
10188 | else | |
10189 | { | |
10190 | mention (b); | |
112e8700 SM |
10191 | if (uiout->is_mi_like_p ()) |
10192 | uiout->field_string | |
10193 | ("reason", | |
348d480f | 10194 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10195 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10196 | uiout->text ("\nValue = "); |
348d480f | 10197 | } |
850645cf | 10198 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10199 | uiout->field_stream ("new", stb); |
10200 | uiout->text ("\n"); | |
348d480f | 10201 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10202 | break; |
10203 | default: | |
348d480f | 10204 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10205 | } |
10206 | ||
348d480f PA |
10207 | return result; |
10208 | } | |
10209 | ||
10210 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10211 | watchpoints. */ | |
10212 | ||
10213 | static void | |
10214 | print_mention_watchpoint (struct breakpoint *b) | |
10215 | { | |
3a5c3e22 | 10216 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10217 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10218 | const char *tuple_name; |
348d480f PA |
10219 | |
10220 | switch (b->type) | |
10221 | { | |
10222 | case bp_watchpoint: | |
112e8700 | 10223 | uiout->text ("Watchpoint "); |
46b9c129 | 10224 | tuple_name = "wpt"; |
348d480f PA |
10225 | break; |
10226 | case bp_hardware_watchpoint: | |
112e8700 | 10227 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10228 | tuple_name = "wpt"; |
348d480f PA |
10229 | break; |
10230 | case bp_read_watchpoint: | |
112e8700 | 10231 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10232 | tuple_name = "hw-rwpt"; |
348d480f PA |
10233 | break; |
10234 | case bp_access_watchpoint: | |
112e8700 | 10235 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10236 | tuple_name = "hw-awpt"; |
348d480f PA |
10237 | break; |
10238 | default: | |
10239 | internal_error (__FILE__, __LINE__, | |
10240 | _("Invalid hardware watchpoint type.")); | |
10241 | } | |
10242 | ||
46b9c129 | 10243 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10244 | uiout->field_int ("number", b->number); |
10245 | uiout->text (": "); | |
10246 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10247 | } |
10248 | ||
10249 | /* Implement the "print_recreate" breakpoint_ops method for | |
10250 | watchpoints. */ | |
10251 | ||
10252 | static void | |
10253 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10254 | { | |
3a5c3e22 PA |
10255 | struct watchpoint *w = (struct watchpoint *) b; |
10256 | ||
348d480f PA |
10257 | switch (b->type) |
10258 | { | |
10259 | case bp_watchpoint: | |
10260 | case bp_hardware_watchpoint: | |
10261 | fprintf_unfiltered (fp, "watch"); | |
10262 | break; | |
10263 | case bp_read_watchpoint: | |
10264 | fprintf_unfiltered (fp, "rwatch"); | |
10265 | break; | |
10266 | case bp_access_watchpoint: | |
10267 | fprintf_unfiltered (fp, "awatch"); | |
10268 | break; | |
10269 | default: | |
10270 | internal_error (__FILE__, __LINE__, | |
10271 | _("Invalid watchpoint type.")); | |
10272 | } | |
10273 | ||
3a5c3e22 | 10274 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10275 | print_recreate_thread (b, fp); |
348d480f PA |
10276 | } |
10277 | ||
427cd150 TT |
10278 | /* Implement the "explains_signal" breakpoint_ops method for |
10279 | watchpoints. */ | |
10280 | ||
47591c29 | 10281 | static int |
427cd150 TT |
10282 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10283 | { | |
10284 | /* A software watchpoint cannot cause a signal other than | |
10285 | GDB_SIGNAL_TRAP. */ | |
10286 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10287 | return 0; |
427cd150 | 10288 | |
47591c29 | 10289 | return 1; |
427cd150 TT |
10290 | } |
10291 | ||
348d480f PA |
10292 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10293 | ||
2060206e | 10294 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10295 | |
10296 | /* Implement the "insert" breakpoint_ops method for | |
10297 | masked hardware watchpoints. */ | |
10298 | ||
10299 | static int | |
10300 | insert_masked_watchpoint (struct bp_location *bl) | |
10301 | { | |
3a5c3e22 PA |
10302 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10303 | ||
10304 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10305 | bl->watchpoint_type); |
10306 | } | |
10307 | ||
10308 | /* Implement the "remove" breakpoint_ops method for | |
10309 | masked hardware watchpoints. */ | |
10310 | ||
10311 | static int | |
73971819 | 10312 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10313 | { |
3a5c3e22 PA |
10314 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10315 | ||
10316 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10317 | bl->watchpoint_type); |
10318 | } | |
10319 | ||
10320 | /* Implement the "resources_needed" breakpoint_ops method for | |
10321 | masked hardware watchpoints. */ | |
10322 | ||
10323 | static int | |
10324 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10325 | { | |
3a5c3e22 PA |
10326 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10327 | ||
10328 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10329 | } |
10330 | ||
10331 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10332 | masked hardware watchpoints. */ | |
10333 | ||
10334 | static int | |
10335 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10336 | { | |
10337 | return 0; | |
10338 | } | |
10339 | ||
10340 | /* Implement the "print_it" breakpoint_ops method for | |
10341 | masked hardware watchpoints. */ | |
10342 | ||
10343 | static enum print_stop_action | |
10344 | print_it_masked_watchpoint (bpstat bs) | |
10345 | { | |
10346 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10347 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10348 | |
10349 | /* Masked watchpoints have only one location. */ | |
10350 | gdb_assert (b->loc && b->loc->next == NULL); | |
10351 | ||
f303dbd6 PA |
10352 | annotate_watchpoint (b->number); |
10353 | maybe_print_thread_hit_breakpoint (uiout); | |
10354 | ||
348d480f PA |
10355 | switch (b->type) |
10356 | { | |
10357 | case bp_hardware_watchpoint: | |
112e8700 SM |
10358 | if (uiout->is_mi_like_p ()) |
10359 | uiout->field_string | |
10360 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10361 | break; |
10362 | ||
10363 | case bp_read_watchpoint: | |
112e8700 SM |
10364 | if (uiout->is_mi_like_p ()) |
10365 | uiout->field_string | |
10366 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10367 | break; |
10368 | ||
10369 | case bp_access_watchpoint: | |
112e8700 SM |
10370 | if (uiout->is_mi_like_p ()) |
10371 | uiout->field_string | |
10372 | ("reason", | |
348d480f PA |
10373 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10374 | break; | |
10375 | default: | |
10376 | internal_error (__FILE__, __LINE__, | |
10377 | _("Invalid hardware watchpoint type.")); | |
10378 | } | |
10379 | ||
10380 | mention (b); | |
112e8700 | 10381 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10382 | Check the underlying instruction at PC for the memory\n\ |
10383 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10384 | uiout->text ("\n"); |
9c06b0b4 TJB |
10385 | |
10386 | /* More than one watchpoint may have been triggered. */ | |
10387 | return PRINT_UNKNOWN; | |
10388 | } | |
10389 | ||
10390 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10391 | masked hardware watchpoints. */ | |
10392 | ||
10393 | static void | |
10394 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10395 | struct ui_out *uiout) | |
10396 | { | |
3a5c3e22 PA |
10397 | struct watchpoint *w = (struct watchpoint *) b; |
10398 | ||
9c06b0b4 TJB |
10399 | /* Masked watchpoints have only one location. */ |
10400 | gdb_assert (b->loc && b->loc->next == NULL); | |
10401 | ||
112e8700 SM |
10402 | uiout->text ("\tmask "); |
10403 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10404 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10405 | } |
10406 | ||
10407 | /* Implement the "print_mention" breakpoint_ops method for | |
10408 | masked hardware watchpoints. */ | |
10409 | ||
10410 | static void | |
10411 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10412 | { | |
3a5c3e22 | 10413 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10414 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10415 | const char *tuple_name; |
9c06b0b4 TJB |
10416 | |
10417 | switch (b->type) | |
10418 | { | |
10419 | case bp_hardware_watchpoint: | |
112e8700 | 10420 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10421 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10422 | break; |
10423 | case bp_read_watchpoint: | |
112e8700 | 10424 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10425 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10426 | break; |
10427 | case bp_access_watchpoint: | |
112e8700 | 10428 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10429 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10430 | break; |
10431 | default: | |
10432 | internal_error (__FILE__, __LINE__, | |
10433 | _("Invalid hardware watchpoint type.")); | |
10434 | } | |
10435 | ||
46b9c129 | 10436 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10437 | uiout->field_int ("number", b->number); |
10438 | uiout->text (": "); | |
10439 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10440 | } |
10441 | ||
10442 | /* Implement the "print_recreate" breakpoint_ops method for | |
10443 | masked hardware watchpoints. */ | |
10444 | ||
10445 | static void | |
10446 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10447 | { | |
3a5c3e22 | 10448 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10449 | char tmp[40]; |
10450 | ||
10451 | switch (b->type) | |
10452 | { | |
10453 | case bp_hardware_watchpoint: | |
10454 | fprintf_unfiltered (fp, "watch"); | |
10455 | break; | |
10456 | case bp_read_watchpoint: | |
10457 | fprintf_unfiltered (fp, "rwatch"); | |
10458 | break; | |
10459 | case bp_access_watchpoint: | |
10460 | fprintf_unfiltered (fp, "awatch"); | |
10461 | break; | |
10462 | default: | |
10463 | internal_error (__FILE__, __LINE__, | |
10464 | _("Invalid hardware watchpoint type.")); | |
10465 | } | |
10466 | ||
3a5c3e22 PA |
10467 | sprintf_vma (tmp, w->hw_wp_mask); |
10468 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10469 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10470 | } |
10471 | ||
10472 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10473 | ||
2060206e | 10474 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10475 | |
10476 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10477 | ||
10478 | static int | |
10479 | is_masked_watchpoint (const struct breakpoint *b) | |
10480 | { | |
10481 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10482 | } | |
10483 | ||
53a5351d JM |
10484 | /* accessflag: hw_write: watch write, |
10485 | hw_read: watch read, | |
10486 | hw_access: watch access (read or write) */ | |
c906108c | 10487 | static void |
bbc13ae3 | 10488 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10489 | int just_location, int internal) |
c906108c | 10490 | { |
c1fc2657 | 10491 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10492 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10493 | struct value *result; |
bb9d5f81 | 10494 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10495 | const char *exp_start = NULL; |
10496 | const char *exp_end = NULL; | |
10497 | const char *tok, *end_tok; | |
9c06b0b4 | 10498 | int toklen = -1; |
bbc13ae3 KS |
10499 | const char *cond_start = NULL; |
10500 | const char *cond_end = NULL; | |
c906108c | 10501 | enum bptype bp_type; |
37e4754d | 10502 | int thread = -1; |
0cf6dd15 | 10503 | int pc = 0; |
9c06b0b4 TJB |
10504 | /* Flag to indicate whether we are going to use masks for |
10505 | the hardware watchpoint. */ | |
10506 | int use_mask = 0; | |
10507 | CORE_ADDR mask = 0; | |
c906108c | 10508 | |
37e4754d LM |
10509 | /* Make sure that we actually have parameters to parse. */ |
10510 | if (arg != NULL && arg[0] != '\0') | |
10511 | { | |
bbc13ae3 KS |
10512 | const char *value_start; |
10513 | ||
10514 | exp_end = arg + strlen (arg); | |
37e4754d | 10515 | |
9c06b0b4 TJB |
10516 | /* Look for "parameter value" pairs at the end |
10517 | of the arguments string. */ | |
bbc13ae3 | 10518 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10519 | { |
10520 | /* Skip whitespace at the end of the argument list. */ | |
10521 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10522 | tok--; | |
10523 | ||
10524 | /* Find the beginning of the last token. | |
10525 | This is the value of the parameter. */ | |
10526 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10527 | tok--; | |
10528 | value_start = tok + 1; | |
10529 | ||
10530 | /* Skip whitespace. */ | |
10531 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10532 | tok--; | |
10533 | ||
10534 | end_tok = tok; | |
10535 | ||
10536 | /* Find the beginning of the second to last token. | |
10537 | This is the parameter itself. */ | |
10538 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10539 | tok--; | |
10540 | tok++; | |
10541 | toklen = end_tok - tok + 1; | |
10542 | ||
61012eef | 10543 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10544 | { |
5d5658a1 | 10545 | struct thread_info *thr; |
9c06b0b4 TJB |
10546 | /* At this point we've found a "thread" token, which means |
10547 | the user is trying to set a watchpoint that triggers | |
10548 | only in a specific thread. */ | |
5d5658a1 | 10549 | const char *endp; |
37e4754d | 10550 | |
9c06b0b4 TJB |
10551 | if (thread != -1) |
10552 | error(_("You can specify only one thread.")); | |
37e4754d | 10553 | |
9c06b0b4 | 10554 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10555 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10556 | |
5d5658a1 | 10557 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10558 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10559 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10560 | |
5d5658a1 | 10561 | thread = thr->global_num; |
9c06b0b4 | 10562 | } |
61012eef | 10563 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10564 | { |
10565 | /* We've found a "mask" token, which means the user wants to | |
10566 | create a hardware watchpoint that is going to have the mask | |
10567 | facility. */ | |
10568 | struct value *mask_value, *mark; | |
37e4754d | 10569 | |
9c06b0b4 TJB |
10570 | if (use_mask) |
10571 | error(_("You can specify only one mask.")); | |
37e4754d | 10572 | |
9c06b0b4 | 10573 | use_mask = just_location = 1; |
37e4754d | 10574 | |
9c06b0b4 TJB |
10575 | mark = value_mark (); |
10576 | mask_value = parse_to_comma_and_eval (&value_start); | |
10577 | mask = value_as_address (mask_value); | |
10578 | value_free_to_mark (mark); | |
10579 | } | |
10580 | else | |
10581 | /* We didn't recognize what we found. We should stop here. */ | |
10582 | break; | |
37e4754d | 10583 | |
9c06b0b4 TJB |
10584 | /* Truncate the string and get rid of the "parameter value" pair before |
10585 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10586 | exp_end = tok; |
9c06b0b4 | 10587 | } |
37e4754d | 10588 | } |
bbc13ae3 KS |
10589 | else |
10590 | exp_end = arg; | |
37e4754d | 10591 | |
bbc13ae3 KS |
10592 | /* Parse the rest of the arguments. From here on out, everything |
10593 | is in terms of a newly allocated string instead of the original | |
10594 | ARG. */ | |
aee1fcdf | 10595 | innermost_block.reset (); |
81b1e71c TT |
10596 | std::string expression (arg, exp_end - arg); |
10597 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10598 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10599 | exp_end = arg; |
fa8a61dc TT |
10600 | /* Remove trailing whitespace from the expression before saving it. |
10601 | This makes the eventual display of the expression string a bit | |
10602 | prettier. */ | |
10603 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10604 | --exp_end; | |
10605 | ||
65d79d4b | 10606 | /* Checking if the expression is not constant. */ |
4d01a485 | 10607 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10608 | { |
10609 | int len; | |
10610 | ||
10611 | len = exp_end - exp_start; | |
10612 | while (len > 0 && isspace (exp_start[len - 1])) | |
10613 | len--; | |
10614 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10615 | } | |
10616 | ||
aee1fcdf | 10617 | exp_valid_block = innermost_block.block (); |
b926417a | 10618 | struct value *mark = value_mark (); |
850645cf TT |
10619 | struct value *val_as_value = nullptr; |
10620 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10621 | just_location); | |
06a64a0b | 10622 | |
850645cf | 10623 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10624 | { |
850645cf TT |
10625 | saved_bitpos = value_bitpos (val_as_value); |
10626 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10627 | } |
10628 | ||
850645cf | 10629 | value_ref_ptr val; |
06a64a0b TT |
10630 | if (just_location) |
10631 | { | |
9c06b0b4 TJB |
10632 | int ret; |
10633 | ||
06a64a0b | 10634 | exp_valid_block = NULL; |
850645cf | 10635 | val = release_value (value_addr (result)); |
06a64a0b | 10636 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10637 | |
10638 | if (use_mask) | |
10639 | { | |
850645cf | 10640 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10641 | mask); |
10642 | if (ret == -1) | |
10643 | error (_("This target does not support masked watchpoints.")); | |
10644 | else if (ret == -2) | |
10645 | error (_("Invalid mask or memory region.")); | |
10646 | } | |
06a64a0b | 10647 | } |
850645cf TT |
10648 | else if (val_as_value != NULL) |
10649 | val = release_value (val_as_value); | |
c906108c | 10650 | |
f1735a53 TT |
10651 | tok = skip_spaces (arg); |
10652 | end_tok = skip_to_space (tok); | |
c906108c SS |
10653 | |
10654 | toklen = end_tok - tok; | |
10655 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10656 | { | |
aee1fcdf | 10657 | innermost_block.reset (); |
c906108c | 10658 | tok = cond_start = end_tok + 1; |
4d01a485 | 10659 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10660 | |
10661 | /* The watchpoint expression may not be local, but the condition | |
10662 | may still be. E.g.: `watch global if local > 0'. */ | |
aee1fcdf | 10663 | cond_exp_valid_block = innermost_block.block (); |
60e1c644 | 10664 | |
c906108c SS |
10665 | cond_end = tok; |
10666 | } | |
10667 | if (*tok) | |
8a3fe4f8 | 10668 | error (_("Junk at end of command.")); |
c906108c | 10669 | |
441d7c93 PA |
10670 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10671 | ||
10672 | /* Save this because create_internal_breakpoint below invalidates | |
10673 | 'wp_frame'. */ | |
10674 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10675 | |
10676 | /* If the expression is "local", then set up a "watchpoint scope" | |
10677 | breakpoint at the point where we've left the scope of the watchpoint | |
10678 | expression. Create the scope breakpoint before the watchpoint, so | |
10679 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10680 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10681 | { |
441d7c93 PA |
10682 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10683 | ||
10684 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10685 | { |
441d7c93 PA |
10686 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10687 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10688 | ||
edb3359d | 10689 | scope_breakpoint |
441d7c93 | 10690 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10691 | bp_watchpoint_scope, |
10692 | &momentary_breakpoint_ops); | |
d983da9c | 10693 | |
441d7c93 PA |
10694 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10695 | wp_frame = NULL; | |
10696 | ||
edb3359d | 10697 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10698 | |
edb3359d DJ |
10699 | /* Automatically delete the breakpoint when it hits. */ |
10700 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10701 | |
edb3359d | 10702 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10703 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10704 | |
edb3359d | 10705 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10706 | scope_breakpoint->loc->gdbarch = caller_arch; |
10707 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10708 | scope_breakpoint->loc->address |
a6d9a66e UW |
10709 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10710 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10711 | scope_breakpoint->type); |
10712 | } | |
d983da9c DJ |
10713 | } |
10714 | ||
e8369a73 AB |
10715 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10716 | watchpoints here even if hardware watchpoints are turned off, a call | |
10717 | to update_watchpoint later in this function will cause the type to | |
10718 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10719 | ||
10720 | if (accessflag == hw_read) | |
10721 | bp_type = bp_read_watchpoint; | |
10722 | else if (accessflag == hw_access) | |
10723 | bp_type = bp_access_watchpoint; | |
10724 | else | |
10725 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10726 | |
b270e6f9 | 10727 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10728 | |
348d480f | 10729 | if (use_mask) |
b270e6f9 | 10730 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10731 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10732 | else |
b270e6f9 | 10733 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10734 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10735 | w->thread = thread; |
10736 | w->disposition = disp_donttouch; | |
10737 | w->pspace = current_program_space; | |
b22e99fd | 10738 | w->exp = std::move (exp); |
3a5c3e22 PA |
10739 | w->exp_valid_block = exp_valid_block; |
10740 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10741 | if (just_location) |
10742 | { | |
850645cf TT |
10743 | struct type *t = value_type (val.get ()); |
10744 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10745 | |
43cc5389 TT |
10746 | w->exp_string_reparse |
10747 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10748 | |
3a5c3e22 | 10749 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10750 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10751 | } |
10752 | else | |
3a5c3e22 | 10753 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10754 | |
10755 | if (use_mask) | |
10756 | { | |
3a5c3e22 | 10757 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10758 | } |
10759 | else | |
10760 | { | |
3a5c3e22 | 10761 | w->val = val; |
bb9d5f81 PP |
10762 | w->val_bitpos = saved_bitpos; |
10763 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10764 | w->val_valid = 1; |
9c06b0b4 | 10765 | } |
77b06cd7 | 10766 | |
c906108c | 10767 | if (cond_start) |
c1fc2657 | 10768 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10769 | else |
c1fc2657 | 10770 | w->cond_string = 0; |
c5aa993b | 10771 | |
441d7c93 | 10772 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10773 | { |
441d7c93 | 10774 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10775 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10776 | } |
c906108c | 10777 | else |
f6bc2008 | 10778 | { |
3a5c3e22 PA |
10779 | w->watchpoint_frame = null_frame_id; |
10780 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10781 | } |
c906108c | 10782 | |
d983da9c | 10783 | if (scope_breakpoint != NULL) |
c906108c | 10784 | { |
d983da9c DJ |
10785 | /* The scope breakpoint is related to the watchpoint. We will |
10786 | need to act on them together. */ | |
c1fc2657 | 10787 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10788 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10789 | } |
d983da9c | 10790 | |
06a64a0b TT |
10791 | if (!just_location) |
10792 | value_free_to_mark (mark); | |
2d134ed3 | 10793 | |
b270e6f9 TT |
10794 | /* Finally update the new watchpoint. This creates the locations |
10795 | that should be inserted. */ | |
10796 | update_watchpoint (w.get (), 1); | |
a9634178 | 10797 | |
b270e6f9 | 10798 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10799 | } |
10800 | ||
e09342b5 | 10801 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10802 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10803 | |
c906108c | 10804 | static int |
a6535de1 | 10805 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10806 | { |
10807 | int found_memory_cnt = 0; | |
10808 | ||
10809 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10810 | if (!can_use_hw_watchpoints) |
c906108c | 10811 | return 0; |
c5aa993b | 10812 | |
a6535de1 TT |
10813 | gdb_assert (!vals.empty ()); |
10814 | struct value *head = vals[0].get (); | |
10815 | ||
5c44784c JM |
10816 | /* Make sure that the value of the expression depends only upon |
10817 | memory contents, and values computed from them within GDB. If we | |
10818 | find any register references or function calls, we can't use a | |
10819 | hardware watchpoint. | |
10820 | ||
10821 | The idea here is that evaluating an expression generates a series | |
10822 | of values, one holding the value of every subexpression. (The | |
10823 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10824 | a*b+c.) GDB's values hold almost enough information to establish | |
10825 | the criteria given above --- they identify memory lvalues, | |
10826 | register lvalues, computed values, etcetera. So we can evaluate | |
10827 | the expression, and then scan the chain of values that leaves | |
10828 | behind to decide whether we can detect any possible change to the | |
10829 | expression's final value using only hardware watchpoints. | |
10830 | ||
10831 | However, I don't think that the values returned by inferior | |
10832 | function calls are special in any way. So this function may not | |
10833 | notice that an expression involving an inferior function call | |
10834 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10835 | for (const value_ref_ptr &iter : vals) |
c906108c | 10836 | { |
a6535de1 TT |
10837 | struct value *v = iter.get (); |
10838 | ||
5c44784c | 10839 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10840 | { |
8464be76 DJ |
10841 | if (v != head && value_lazy (v)) |
10842 | /* A lazy memory lvalue in the chain is one that GDB never | |
10843 | needed to fetch; we either just used its address (e.g., | |
10844 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10845 | in `a,b'). This doesn't apply to HEAD; if that is | |
10846 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10847 | ; |
53a5351d | 10848 | else |
5c44784c JM |
10849 | { |
10850 | /* Ahh, memory we actually used! Check if we can cover | |
10851 | it with hardware watchpoints. */ | |
df407dfe | 10852 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10853 | |
10854 | /* We only watch structs and arrays if user asked for it | |
10855 | explicitly, never if they just happen to appear in a | |
10856 | middle of some value chain. */ | |
10857 | if (v == head | |
10858 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10859 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10860 | { | |
42ae5230 | 10861 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10862 | int len; |
10863 | int num_regs; | |
10864 | ||
a9634178 | 10865 | len = (target_exact_watchpoints |
e09342b5 TJB |
10866 | && is_scalar_type_recursive (vtype))? |
10867 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10868 | |
e09342b5 TJB |
10869 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10870 | if (!num_regs) | |
2e70b7b9 MS |
10871 | return 0; |
10872 | else | |
e09342b5 | 10873 | found_memory_cnt += num_regs; |
2e70b7b9 | 10874 | } |
5c44784c | 10875 | } |
c5aa993b | 10876 | } |
5086187c AC |
10877 | else if (VALUE_LVAL (v) != not_lval |
10878 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10879 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10880 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10881 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10882 | } |
10883 | ||
10884 | /* The expression itself looks suitable for using a hardware | |
10885 | watchpoint, but give the target machine a chance to reject it. */ | |
10886 | return found_memory_cnt; | |
10887 | } | |
10888 | ||
8b93c638 | 10889 | void |
f2fc3015 | 10890 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10891 | { |
84f4c1fe | 10892 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10893 | } |
10894 | ||
06a64a0b TT |
10895 | /* A helper function that looks for the "-location" argument and then |
10896 | calls watch_command_1. */ | |
10897 | ||
10898 | static void | |
0b39b52e | 10899 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10900 | { |
10901 | int just_location = 0; | |
10902 | ||
10903 | if (arg | |
10904 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10905 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10906 | { | |
e9cafbcc | 10907 | arg = skip_spaces (arg); |
06a64a0b TT |
10908 | just_location = 1; |
10909 | } | |
10910 | ||
84f4c1fe | 10911 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10912 | } |
8926118c | 10913 | |
c5aa993b | 10914 | static void |
0b39b52e | 10915 | watch_command (const char *arg, int from_tty) |
c906108c | 10916 | { |
06a64a0b | 10917 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10918 | } |
10919 | ||
8b93c638 | 10920 | void |
f2fc3015 | 10921 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10922 | { |
84f4c1fe | 10923 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10924 | } |
8926118c | 10925 | |
c5aa993b | 10926 | static void |
0b39b52e | 10927 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10928 | { |
06a64a0b | 10929 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10930 | } |
10931 | ||
8b93c638 | 10932 | void |
f2fc3015 | 10933 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10934 | { |
84f4c1fe | 10935 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10936 | } |
8926118c | 10937 | |
c5aa993b | 10938 | static void |
0b39b52e | 10939 | awatch_command (const char *arg, int from_tty) |
c906108c | 10940 | { |
06a64a0b | 10941 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10942 | } |
c906108c | 10943 | \f |
c5aa993b | 10944 | |
cfc31633 PA |
10945 | /* Data for the FSM that manages the until(location)/advance commands |
10946 | in infcmd.c. Here because it uses the mechanisms of | |
10947 | breakpoints. */ | |
c906108c | 10948 | |
46e3ed7f | 10949 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10950 | { |
46e3ed7f | 10951 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10952 | int thread; |
10953 | ||
10954 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10955 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10956 | |
10957 | /* Breakpoint set at the return address in the caller frame. May be | |
10958 | NULL. */ | |
46e3ed7f | 10959 | breakpoint_up caller_breakpoint; |
cfc31633 | 10960 | |
46e3ed7f TT |
10961 | until_break_fsm (struct interp *cmd_interp, int thread, |
10962 | breakpoint_up &&location_breakpoint, | |
10963 | breakpoint_up &&caller_breakpoint) | |
10964 | : thread_fsm (cmd_interp), | |
10965 | thread (thread), | |
10966 | location_breakpoint (std::move (location_breakpoint)), | |
10967 | caller_breakpoint (std::move (caller_breakpoint)) | |
10968 | { | |
10969 | } | |
cfc31633 | 10970 | |
46e3ed7f TT |
10971 | void clean_up (struct thread_info *thread) override; |
10972 | bool should_stop (struct thread_info *thread) override; | |
10973 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10974 | }; |
10975 | ||
cfc31633 PA |
10976 | /* Implementation of the 'should_stop' FSM method for the |
10977 | until(location)/advance commands. */ | |
10978 | ||
46e3ed7f TT |
10979 | bool |
10980 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10981 | { |
cfc31633 | 10982 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10983 | location_breakpoint.get ()) != NULL |
10984 | || (caller_breakpoint != NULL | |
cfc31633 | 10985 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10986 | caller_breakpoint.get ()) != NULL)) |
10987 | set_finished (); | |
cfc31633 | 10988 | |
46e3ed7f | 10989 | return true; |
cfc31633 PA |
10990 | } |
10991 | ||
10992 | /* Implementation of the 'clean_up' FSM method for the | |
10993 | until(location)/advance commands. */ | |
10994 | ||
46e3ed7f TT |
10995 | void |
10996 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10997 | { |
cfc31633 | 10998 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10999 | location_breakpoint.reset (); |
11000 | caller_breakpoint.reset (); | |
11001 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
11002 | } |
11003 | ||
11004 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11005 | until(location)/advance commands. */ | |
11006 | ||
46e3ed7f TT |
11007 | enum async_reply_reason |
11008 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
11009 | { |
11010 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11011 | } |
11012 | ||
c906108c | 11013 | void |
f2fc3015 | 11014 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11015 | { |
8556afb4 PA |
11016 | struct frame_info *frame; |
11017 | struct gdbarch *frame_gdbarch; | |
11018 | struct frame_id stack_frame_id; | |
11019 | struct frame_id caller_frame_id; | |
186c406b TT |
11020 | int thread; |
11021 | struct thread_info *tp; | |
c906108c | 11022 | |
70509625 | 11023 | clear_proceed_status (0); |
c906108c SS |
11024 | |
11025 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11026 | this function. */ |
c5aa993b | 11027 | |
ffc2605c | 11028 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11029 | |
6c5b2ebe PA |
11030 | std::vector<symtab_and_line> sals |
11031 | = (last_displayed_sal_is_valid () | |
11032 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11033 | get_last_displayed_symtab (), | |
11034 | get_last_displayed_line ()) | |
11035 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11036 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11037 | |
6c5b2ebe | 11038 | if (sals.size () != 1) |
8a3fe4f8 | 11039 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11040 | |
6c5b2ebe | 11041 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11042 | |
c906108c | 11043 | if (*arg) |
8a3fe4f8 | 11044 | error (_("Junk at end of arguments.")); |
c5aa993b | 11045 | |
c906108c | 11046 | resolve_sal_pc (&sal); |
c5aa993b | 11047 | |
186c406b | 11048 | tp = inferior_thread (); |
5d5658a1 | 11049 | thread = tp->global_num; |
186c406b | 11050 | |
8556afb4 PA |
11051 | /* Note linespec handling above invalidates the frame chain. |
11052 | Installing a breakpoint also invalidates the frame chain (as it | |
11053 | may need to switch threads), so do any frame handling before | |
11054 | that. */ | |
11055 | ||
11056 | frame = get_selected_frame (NULL); | |
11057 | frame_gdbarch = get_frame_arch (frame); | |
11058 | stack_frame_id = get_stack_frame_id (frame); | |
11059 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11060 | |
ae66c1fc EZ |
11061 | /* Keep within the current frame, or in frames called by the current |
11062 | one. */ | |
edb3359d | 11063 | |
454dafbd | 11064 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11065 | |
11066 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11067 | ||
883bc8d1 | 11068 | if (frame_id_p (caller_frame_id)) |
c906108c | 11069 | { |
883bc8d1 | 11070 | struct symtab_and_line sal2; |
cfc31633 | 11071 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11072 | |
11073 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11074 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11075 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11076 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11077 | sal2, | |
11078 | caller_frame_id, | |
11079 | bp_until); | |
186c406b | 11080 | |
883bc8d1 | 11081 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11082 | lj_deleter.emplace (thread); |
c906108c | 11083 | } |
c5aa993b | 11084 | |
c70a6932 JK |
11085 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11086 | frame = NULL; | |
11087 | ||
454dafbd | 11088 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11089 | if (anywhere) |
11090 | /* If the user told us to continue until a specified location, | |
11091 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11092 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11093 | null_frame_id, bp_until); | |
883bc8d1 PA |
11094 | else |
11095 | /* Otherwise, specify the selected frame, because we want to stop | |
11096 | only at the very same frame. */ | |
cfc31633 PA |
11097 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11098 | stack_frame_id, bp_until); | |
883bc8d1 | 11099 | |
46e3ed7f TT |
11100 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11101 | std::move (location_breakpoint), | |
11102 | std::move (caller_breakpoint)); | |
f107f563 | 11103 | |
5419bdae TT |
11104 | if (lj_deleter) |
11105 | lj_deleter->release (); | |
f107f563 | 11106 | |
cfc31633 | 11107 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11108 | } |
ae66c1fc | 11109 | |
c906108c SS |
11110 | /* This function attempts to parse an optional "if <cond>" clause |
11111 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11112 | |
c906108c SS |
11113 | Else, it returns a pointer to the condition string. (It does not |
11114 | attempt to evaluate the string against a particular block.) And, | |
11115 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11116 | if clause in the arg string. */ |
53a5351d | 11117 | |
63160a43 PA |
11118 | const char * |
11119 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11120 | { |
63160a43 | 11121 | const char *cond_string; |
c5aa993b JM |
11122 | |
11123 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11124 | return NULL; |
c5aa993b | 11125 | |
4a64f543 | 11126 | /* Skip the "if" keyword. */ |
c906108c | 11127 | (*arg) += 2; |
c5aa993b | 11128 | |
c906108c | 11129 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11130 | condition string. */ |
f1735a53 | 11131 | *arg = skip_spaces (*arg); |
c906108c | 11132 | cond_string = *arg; |
c5aa993b | 11133 | |
4a64f543 MS |
11134 | /* Assume that the condition occupies the remainder of the arg |
11135 | string. */ | |
c906108c | 11136 | (*arg) += strlen (cond_string); |
c5aa993b | 11137 | |
c906108c SS |
11138 | return cond_string; |
11139 | } | |
c5aa993b | 11140 | |
c906108c SS |
11141 | /* Commands to deal with catching events, such as signals, exceptions, |
11142 | process start/exit, etc. */ | |
c5aa993b JM |
11143 | |
11144 | typedef enum | |
11145 | { | |
44feb3ce TT |
11146 | catch_fork_temporary, catch_vfork_temporary, |
11147 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11148 | } |
11149 | catch_fork_kind; | |
11150 | ||
c906108c | 11151 | static void |
eb4c3f4a | 11152 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11153 | struct cmd_list_element *command) |
c906108c | 11154 | { |
a6d9a66e | 11155 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11156 | const char *cond_string = NULL; |
44feb3ce TT |
11157 | catch_fork_kind fork_kind; |
11158 | int tempflag; | |
11159 | ||
11160 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11161 | tempflag = (fork_kind == catch_fork_temporary | |
11162 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11163 | |
44feb3ce TT |
11164 | if (!arg) |
11165 | arg = ""; | |
f1735a53 | 11166 | arg = skip_spaces (arg); |
c5aa993b | 11167 | |
c906108c | 11168 | /* The allowed syntax is: |
c5aa993b JM |
11169 | catch [v]fork |
11170 | catch [v]fork if <cond> | |
11171 | ||
4a64f543 | 11172 | First, check if there's an if clause. */ |
c906108c | 11173 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11174 | |
c906108c | 11175 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11176 | error (_("Junk at end of arguments.")); |
c5aa993b | 11177 | |
c906108c | 11178 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11179 | and enable reporting of such events. */ |
c5aa993b JM |
11180 | switch (fork_kind) |
11181 | { | |
44feb3ce TT |
11182 | case catch_fork_temporary: |
11183 | case catch_fork_permanent: | |
a6d9a66e | 11184 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11185 | &catch_fork_breakpoint_ops); |
c906108c | 11186 | break; |
44feb3ce TT |
11187 | case catch_vfork_temporary: |
11188 | case catch_vfork_permanent: | |
a6d9a66e | 11189 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11190 | &catch_vfork_breakpoint_ops); |
c906108c | 11191 | break; |
c5aa993b | 11192 | default: |
8a3fe4f8 | 11193 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11194 | break; |
c5aa993b | 11195 | } |
c906108c SS |
11196 | } |
11197 | ||
11198 | static void | |
eb4c3f4a | 11199 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11200 | struct cmd_list_element *command) |
c906108c | 11201 | { |
a6d9a66e | 11202 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11203 | int tempflag; |
63160a43 | 11204 | const char *cond_string = NULL; |
c906108c | 11205 | |
44feb3ce TT |
11206 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11207 | ||
11208 | if (!arg) | |
11209 | arg = ""; | |
f1735a53 | 11210 | arg = skip_spaces (arg); |
c906108c SS |
11211 | |
11212 | /* The allowed syntax is: | |
c5aa993b JM |
11213 | catch exec |
11214 | catch exec if <cond> | |
c906108c | 11215 | |
4a64f543 | 11216 | First, check if there's an if clause. */ |
c906108c SS |
11217 | cond_string = ep_parse_optional_if_clause (&arg); |
11218 | ||
11219 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11220 | error (_("Junk at end of arguments.")); |
c906108c | 11221 | |
b270e6f9 TT |
11222 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11223 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11224 | &catch_exec_breakpoint_ops); |
11225 | c->exec_pathname = NULL; | |
11226 | ||
b270e6f9 | 11227 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11228 | } |
c5aa993b | 11229 | |
9ac4176b | 11230 | void |
28010a5d PA |
11231 | init_ada_exception_breakpoint (struct breakpoint *b, |
11232 | struct gdbarch *gdbarch, | |
11233 | struct symtab_and_line sal, | |
f2fc3015 | 11234 | const char *addr_string, |
c0a91b2b | 11235 | const struct breakpoint_ops *ops, |
28010a5d | 11236 | int tempflag, |
349774ef | 11237 | int enabled, |
28010a5d | 11238 | int from_tty) |
f7f9143b | 11239 | { |
f7f9143b JB |
11240 | if (from_tty) |
11241 | { | |
5af949e3 UW |
11242 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11243 | if (!loc_gdbarch) | |
11244 | loc_gdbarch = gdbarch; | |
11245 | ||
6c95b8df PA |
11246 | describe_other_breakpoints (loc_gdbarch, |
11247 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11248 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11249 | version for exception catchpoints, because two catchpoints | |
11250 | used for different exception names will use the same address. | |
11251 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11252 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11253 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11254 | the user what type of catchpoint it is. The above is good |
11255 | enough for now, though. */ | |
11256 | } | |
11257 | ||
28010a5d | 11258 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11259 | |
349774ef | 11260 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11261 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11262 | b->location = string_to_event_location (&addr_string, |
11263 | language_def (language_ada)); | |
f7f9143b | 11264 | b->language = language_ada; |
f7f9143b JB |
11265 | } |
11266 | ||
c906108c | 11267 | static void |
981a3fb3 | 11268 | catch_command (const char *arg, int from_tty) |
c906108c | 11269 | { |
44feb3ce | 11270 | error (_("Catch requires an event name.")); |
c906108c SS |
11271 | } |
11272 | \f | |
11273 | ||
11274 | static void | |
981a3fb3 | 11275 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11276 | { |
44feb3ce | 11277 | error (_("Catch requires an event name.")); |
c906108c SS |
11278 | } |
11279 | ||
81b1e71c | 11280 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11281 | |
11282 | static int | |
81b1e71c | 11283 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11284 | { |
81b1e71c TT |
11285 | uintptr_t ua = (uintptr_t) a; |
11286 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11287 | |
81b1e71c | 11288 | if (a->number < b->number) |
8a2c437b | 11289 | return -1; |
81b1e71c | 11290 | else if (a->number > b->number) |
8a2c437b TT |
11291 | return 1; |
11292 | ||
11293 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11294 | the number 0. */ | |
11295 | if (ua < ub) | |
11296 | return -1; | |
94b0e70d | 11297 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11298 | } |
11299 | ||
80f8a6eb | 11300 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11301 | |
11302 | static void | |
0b39b52e | 11303 | clear_command (const char *arg, int from_tty) |
c906108c | 11304 | { |
81b1e71c | 11305 | struct breakpoint *b; |
c906108c | 11306 | int default_match; |
c906108c | 11307 | |
6c5b2ebe PA |
11308 | std::vector<symtab_and_line> decoded_sals; |
11309 | symtab_and_line last_sal; | |
11310 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11311 | if (arg) |
11312 | { | |
6c5b2ebe PA |
11313 | decoded_sals |
11314 | = decode_line_with_current_source (arg, | |
11315 | (DECODE_LINE_FUNFIRSTLINE | |
11316 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11317 | default_match = 0; |
6c5b2ebe | 11318 | sals = decoded_sals; |
c906108c SS |
11319 | } |
11320 | else | |
11321 | { | |
1bfeeb0f JL |
11322 | /* Set sal's line, symtab, pc, and pspace to the values |
11323 | corresponding to the last call to print_frame_info. If the | |
11324 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11325 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11326 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11327 | error (_("No source file specified.")); |
c906108c | 11328 | |
c906108c | 11329 | default_match = 1; |
6c5b2ebe | 11330 | sals = last_sal; |
c906108c SS |
11331 | } |
11332 | ||
4a64f543 MS |
11333 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11334 | seems, because all existing breakpoints typically have both | |
11335 | file/line and pc set. So, if clear is given file/line, we can | |
11336 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11337 | |
11338 | We only support clearing given the address explicitly | |
11339 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11340 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11341 | due to optimization, all in one block. |
4a64f543 MS |
11342 | |
11343 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11344 | PC corresponding to the same file:line, the breakpoint won't |
11345 | be cleared. We probably can still clear the breakpoint, but | |
11346 | since the other PC value is never presented to user, user | |
11347 | can only find it by guessing, and it does not seem important | |
11348 | to support that. */ | |
11349 | ||
4a64f543 MS |
11350 | /* For each line spec given, delete bps which correspond to it. Do |
11351 | it in two passes, solely to preserve the current behavior that | |
11352 | from_tty is forced true if we delete more than one | |
11353 | breakpoint. */ | |
c906108c | 11354 | |
81b1e71c | 11355 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11356 | for (const auto &sal : sals) |
c906108c | 11357 | { |
05cba821 JK |
11358 | const char *sal_fullname; |
11359 | ||
c906108c | 11360 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11361 | If line given (pc == 0), clear all bpts on specified line. |
11362 | If defaulting, clear all bpts on default line | |
c906108c | 11363 | or at default pc. |
c5aa993b JM |
11364 | |
11365 | defaulting sal.pc != 0 tests to do | |
11366 | ||
11367 | 0 1 pc | |
11368 | 1 1 pc _and_ line | |
11369 | 0 0 line | |
11370 | 1 0 <can't happen> */ | |
c906108c | 11371 | |
05cba821 JK |
11372 | sal_fullname = (sal.symtab == NULL |
11373 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11374 | |
4a64f543 | 11375 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11376 | ALL_BREAKPOINTS (b) |
c5aa993b | 11377 | { |
0d381245 | 11378 | int match = 0; |
4a64f543 | 11379 | /* Are we going to delete b? */ |
cc60f2e3 | 11380 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11381 | { |
11382 | struct bp_location *loc = b->loc; | |
11383 | for (; loc; loc = loc->next) | |
11384 | { | |
f8eba3c6 TT |
11385 | /* If the user specified file:line, don't allow a PC |
11386 | match. This matches historical gdb behavior. */ | |
11387 | int pc_match = (!sal.explicit_line | |
11388 | && sal.pc | |
11389 | && (loc->pspace == sal.pspace) | |
11390 | && (loc->address == sal.pc) | |
11391 | && (!section_is_overlay (loc->section) | |
11392 | || loc->section == sal.section)); | |
4aac40c8 TT |
11393 | int line_match = 0; |
11394 | ||
11395 | if ((default_match || sal.explicit_line) | |
2f202fde | 11396 | && loc->symtab != NULL |
05cba821 | 11397 | && sal_fullname != NULL |
4aac40c8 | 11398 | && sal.pspace == loc->pspace |
05cba821 JK |
11399 | && loc->line_number == sal.line |
11400 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11401 | sal_fullname) == 0) | |
11402 | line_match = 1; | |
4aac40c8 | 11403 | |
0d381245 VP |
11404 | if (pc_match || line_match) |
11405 | { | |
11406 | match = 1; | |
11407 | break; | |
11408 | } | |
11409 | } | |
11410 | } | |
11411 | ||
11412 | if (match) | |
81b1e71c | 11413 | found.push_back (b); |
c906108c | 11414 | } |
80f8a6eb | 11415 | } |
8a2c437b | 11416 | |
80f8a6eb | 11417 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11418 | if (found.empty ()) |
80f8a6eb MS |
11419 | { |
11420 | if (arg) | |
8a3fe4f8 | 11421 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11422 | else |
8a3fe4f8 | 11423 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11424 | } |
c906108c | 11425 | |
8a2c437b | 11426 | /* Remove duplicates from the vec. */ |
81b1e71c | 11427 | std::sort (found.begin (), found.end (), |
b926417a | 11428 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11429 | { |
b926417a | 11430 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11431 | }); |
11432 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11433 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11434 | { |
b926417a | 11435 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11436 | }), |
11437 | found.end ()); | |
8a2c437b | 11438 | |
81b1e71c | 11439 | if (found.size () > 1) |
4a64f543 | 11440 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11441 | if (from_tty) |
a3f17187 | 11442 | { |
81b1e71c | 11443 | if (found.size () == 1) |
a3f17187 AC |
11444 | printf_unfiltered (_("Deleted breakpoint ")); |
11445 | else | |
11446 | printf_unfiltered (_("Deleted breakpoints ")); | |
11447 | } | |
d6e956e5 | 11448 | |
81b1e71c | 11449 | for (breakpoint *iter : found) |
80f8a6eb | 11450 | { |
c5aa993b | 11451 | if (from_tty) |
81b1e71c TT |
11452 | printf_unfiltered ("%d ", iter->number); |
11453 | delete_breakpoint (iter); | |
c906108c | 11454 | } |
80f8a6eb MS |
11455 | if (from_tty) |
11456 | putchar_unfiltered ('\n'); | |
c906108c SS |
11457 | } |
11458 | \f | |
11459 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11460 | all breakpoints that are marked for deletion, whether hit or not. | |
11461 | This is called after any breakpoint is hit, or after errors. */ | |
11462 | ||
11463 | void | |
fba45db2 | 11464 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11465 | { |
35df4500 | 11466 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11467 | |
11468 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11469 | if (bs->breakpoint_at |
11470 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11471 | && bs->stop) |
f431efe5 | 11472 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11473 | |
35df4500 | 11474 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11475 | { |
b5de0fa7 | 11476 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11477 | delete_breakpoint (b); |
11478 | } | |
c906108c SS |
11479 | } |
11480 | ||
4a64f543 MS |
11481 | /* A comparison function for bp_location AP and BP being interfaced to |
11482 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11483 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11484 | secondarily by ordering first permanent elements and |
4a64f543 | 11485 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11486 | qsort being an unstable algorithm. */ |
876fa593 JK |
11487 | |
11488 | static int | |
f5336ca5 | 11489 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11490 | { |
9a3c8263 SM |
11491 | const struct bp_location *a = *(const struct bp_location **) ap; |
11492 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11493 | |
11494 | if (a->address != b->address) | |
11495 | return (a->address > b->address) - (a->address < b->address); | |
11496 | ||
dea2aa5f LM |
11497 | /* Sort locations at the same address by their pspace number, keeping |
11498 | locations of the same inferior (in a multi-inferior environment) | |
11499 | grouped. */ | |
11500 | ||
11501 | if (a->pspace->num != b->pspace->num) | |
11502 | return ((a->pspace->num > b->pspace->num) | |
11503 | - (a->pspace->num < b->pspace->num)); | |
11504 | ||
876fa593 | 11505 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11506 | if (a->permanent != b->permanent) |
11507 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11508 | |
c56a97f9 JK |
11509 | /* Make the internal GDB representation stable across GDB runs |
11510 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11511 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11512 | |
11513 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11514 | return ((a->owner->number > b->owner->number) |
11515 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11516 | |
11517 | return (a > b) - (a < b); | |
11518 | } | |
11519 | ||
f5336ca5 PA |
11520 | /* Set bp_locations_placed_address_before_address_max and |
11521 | bp_locations_shadow_len_after_address_max according to the current | |
11522 | content of the bp_locations array. */ | |
f7545552 TT |
11523 | |
11524 | static void | |
f5336ca5 | 11525 | bp_locations_target_extensions_update (void) |
f7545552 | 11526 | { |
876fa593 JK |
11527 | struct bp_location *bl, **blp_tmp; |
11528 | ||
f5336ca5 PA |
11529 | bp_locations_placed_address_before_address_max = 0; |
11530 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11531 | |
11532 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11533 | { | |
11534 | CORE_ADDR start, end, addr; | |
11535 | ||
11536 | if (!bp_location_has_shadow (bl)) | |
11537 | continue; | |
11538 | ||
11539 | start = bl->target_info.placed_address; | |
11540 | end = start + bl->target_info.shadow_len; | |
11541 | ||
11542 | gdb_assert (bl->address >= start); | |
11543 | addr = bl->address - start; | |
f5336ca5 PA |
11544 | if (addr > bp_locations_placed_address_before_address_max) |
11545 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11546 | |
11547 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11548 | ||
11549 | gdb_assert (bl->address < end); | |
11550 | addr = end - bl->address; | |
f5336ca5 PA |
11551 | if (addr > bp_locations_shadow_len_after_address_max) |
11552 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11553 | } |
f7545552 TT |
11554 | } |
11555 | ||
1e4d1764 YQ |
11556 | /* Download tracepoint locations if they haven't been. */ |
11557 | ||
11558 | static void | |
11559 | download_tracepoint_locations (void) | |
11560 | { | |
7ed2c994 | 11561 | struct breakpoint *b; |
dd2e65cc | 11562 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11563 | |
5ed8105e | 11564 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11565 | |
7ed2c994 | 11566 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11567 | { |
7ed2c994 | 11568 | struct bp_location *bl; |
1e4d1764 | 11569 | struct tracepoint *t; |
f2a8bc8a | 11570 | int bp_location_downloaded = 0; |
1e4d1764 | 11571 | |
7ed2c994 | 11572 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11573 | ? !may_insert_fast_tracepoints |
11574 | : !may_insert_tracepoints)) | |
11575 | continue; | |
11576 | ||
dd2e65cc YQ |
11577 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11578 | { | |
11579 | if (target_can_download_tracepoint ()) | |
11580 | can_download_tracepoint = TRIBOOL_TRUE; | |
11581 | else | |
11582 | can_download_tracepoint = TRIBOOL_FALSE; | |
11583 | } | |
11584 | ||
11585 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11586 | break; | |
11587 | ||
7ed2c994 YQ |
11588 | for (bl = b->loc; bl; bl = bl->next) |
11589 | { | |
11590 | /* In tracepoint, locations are _never_ duplicated, so | |
11591 | should_be_inserted is equivalent to | |
11592 | unduplicated_should_be_inserted. */ | |
11593 | if (!should_be_inserted (bl) || bl->inserted) | |
11594 | continue; | |
1e4d1764 | 11595 | |
7ed2c994 | 11596 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11597 | |
7ed2c994 | 11598 | target_download_tracepoint (bl); |
1e4d1764 | 11599 | |
7ed2c994 | 11600 | bl->inserted = 1; |
f2a8bc8a | 11601 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11602 | } |
11603 | t = (struct tracepoint *) b; | |
11604 | t->number_on_target = b->number; | |
f2a8bc8a | 11605 | if (bp_location_downloaded) |
76727919 | 11606 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11607 | } |
1e4d1764 YQ |
11608 | } |
11609 | ||
934709f0 PW |
11610 | /* Swap the insertion/duplication state between two locations. */ |
11611 | ||
11612 | static void | |
11613 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11614 | { | |
11615 | const int left_inserted = left->inserted; | |
11616 | const int left_duplicate = left->duplicate; | |
b775012e | 11617 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11618 | const struct bp_target_info left_target_info = left->target_info; |
11619 | ||
1e4d1764 YQ |
11620 | /* Locations of tracepoints can never be duplicated. */ |
11621 | if (is_tracepoint (left->owner)) | |
11622 | gdb_assert (!left->duplicate); | |
11623 | if (is_tracepoint (right->owner)) | |
11624 | gdb_assert (!right->duplicate); | |
11625 | ||
934709f0 PW |
11626 | left->inserted = right->inserted; |
11627 | left->duplicate = right->duplicate; | |
b775012e | 11628 | left->needs_update = right->needs_update; |
934709f0 PW |
11629 | left->target_info = right->target_info; |
11630 | right->inserted = left_inserted; | |
11631 | right->duplicate = left_duplicate; | |
b775012e | 11632 | right->needs_update = left_needs_update; |
934709f0 PW |
11633 | right->target_info = left_target_info; |
11634 | } | |
11635 | ||
b775012e LM |
11636 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11637 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11638 | conditions on the target's side. Such conditions need to be updated on | |
11639 | the target. */ | |
11640 | ||
11641 | static void | |
11642 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11643 | { | |
11644 | struct bp_location **locp = NULL, **loc2p; | |
11645 | struct bp_location *loc; | |
11646 | CORE_ADDR address = 0; | |
11647 | int pspace_num; | |
11648 | ||
11649 | address = bl->address; | |
11650 | pspace_num = bl->pspace->num; | |
11651 | ||
11652 | /* This is only meaningful if the target is | |
11653 | evaluating conditions and if the user has | |
11654 | opted for condition evaluation on the target's | |
11655 | side. */ | |
11656 | if (gdb_evaluates_breakpoint_condition_p () | |
11657 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11658 | return; | |
11659 | ||
11660 | /* Flag all breakpoint locations with this address and | |
11661 | the same program space as the location | |
11662 | as "its condition has changed". We need to | |
11663 | update the conditions on the target's side. */ | |
11664 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11665 | { | |
11666 | loc = *loc2p; | |
11667 | ||
11668 | if (!is_breakpoint (loc->owner) | |
11669 | || pspace_num != loc->pspace->num) | |
11670 | continue; | |
11671 | ||
11672 | /* Flag the location appropriately. We use a different state to | |
11673 | let everyone know that we already updated the set of locations | |
11674 | with addr bl->address and program space bl->pspace. This is so | |
11675 | we don't have to keep calling these functions just to mark locations | |
11676 | that have already been marked. */ | |
11677 | loc->condition_changed = condition_updated; | |
11678 | ||
11679 | /* Free the agent expression bytecode as well. We will compute | |
11680 | it later on. */ | |
833177a4 | 11681 | loc->cond_bytecode.reset (); |
b775012e LM |
11682 | } |
11683 | } | |
44702360 PA |
11684 | /* Called whether new breakpoints are created, or existing breakpoints |
11685 | deleted, to update the global location list and recompute which | |
11686 | locations are duplicate of which. | |
b775012e | 11687 | |
04086b45 PA |
11688 | The INSERT_MODE flag determines whether locations may not, may, or |
11689 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11690 | info. */ | |
b60e7edf | 11691 | |
0d381245 | 11692 | static void |
44702360 | 11693 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11694 | { |
74960c60 | 11695 | struct breakpoint *b; |
876fa593 | 11696 | struct bp_location **locp, *loc; |
b775012e LM |
11697 | /* Last breakpoint location address that was marked for update. */ |
11698 | CORE_ADDR last_addr = 0; | |
11699 | /* Last breakpoint location program space that was marked for update. */ | |
11700 | int last_pspace_num = -1; | |
f7545552 | 11701 | |
2d134ed3 PA |
11702 | /* Used in the duplicates detection below. When iterating over all |
11703 | bp_locations, points to the first bp_location of a given address. | |
11704 | Breakpoints and watchpoints of different types are never | |
11705 | duplicates of each other. Keep one pointer for each type of | |
11706 | breakpoint/watchpoint, so we only need to loop over all locations | |
11707 | once. */ | |
11708 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11709 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11710 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11711 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11712 | |
f5336ca5 PA |
11713 | /* Saved former bp_locations array which we compare against the newly |
11714 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11715 | struct bp_location **old_locp; |
f5336ca5 | 11716 | unsigned old_locations_count; |
81b1e71c | 11717 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11718 | |
f5336ca5 PA |
11719 | old_locations_count = bp_locations_count; |
11720 | bp_locations = NULL; | |
11721 | bp_locations_count = 0; | |
0d381245 | 11722 | |
74960c60 | 11723 | ALL_BREAKPOINTS (b) |
876fa593 | 11724 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11725 | bp_locations_count++; |
876fa593 | 11726 | |
f5336ca5 PA |
11727 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11728 | locp = bp_locations; | |
876fa593 JK |
11729 | ALL_BREAKPOINTS (b) |
11730 | for (loc = b->loc; loc; loc = loc->next) | |
11731 | *locp++ = loc; | |
f5336ca5 PA |
11732 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11733 | bp_locations_compare); | |
876fa593 | 11734 | |
f5336ca5 | 11735 | bp_locations_target_extensions_update (); |
74960c60 | 11736 | |
4a64f543 MS |
11737 | /* Identify bp_location instances that are no longer present in the |
11738 | new list, and therefore should be freed. Note that it's not | |
11739 | necessary that those locations should be removed from inferior -- | |
11740 | if there's another location at the same address (previously | |
11741 | marked as duplicate), we don't need to remove/insert the | |
11742 | location. | |
876fa593 | 11743 | |
4a64f543 MS |
11744 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11745 | and former bp_location array state respectively. */ | |
876fa593 | 11746 | |
f5336ca5 | 11747 | locp = bp_locations; |
81b1e71c TT |
11748 | for (old_locp = old_locations.get (); |
11749 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11750 | old_locp++) |
74960c60 | 11751 | { |
876fa593 | 11752 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11753 | struct bp_location **loc2p; |
876fa593 | 11754 | |
e5dd4106 | 11755 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11756 | not, we have to free it. */ |
c7d46a38 | 11757 | int found_object = 0; |
20874c92 VP |
11758 | /* Tells if the location should remain inserted in the target. */ |
11759 | int keep_in_target = 0; | |
11760 | int removed = 0; | |
876fa593 | 11761 | |
4a64f543 MS |
11762 | /* Skip LOCP entries which will definitely never be needed. |
11763 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11764 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11765 | && (*locp)->address < old_loc->address) |
876fa593 | 11766 | locp++; |
c7d46a38 PA |
11767 | |
11768 | for (loc2p = locp; | |
f5336ca5 | 11769 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11770 | && (*loc2p)->address == old_loc->address); |
11771 | loc2p++) | |
11772 | { | |
b775012e LM |
11773 | /* Check if this is a new/duplicated location or a duplicated |
11774 | location that had its condition modified. If so, we want to send | |
11775 | its condition to the target if evaluation of conditions is taking | |
11776 | place there. */ | |
11777 | if ((*loc2p)->condition_changed == condition_modified | |
11778 | && (last_addr != old_loc->address | |
11779 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11780 | { |
b775012e LM |
11781 | force_breakpoint_reinsertion (*loc2p); |
11782 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11783 | } |
b775012e LM |
11784 | |
11785 | if (*loc2p == old_loc) | |
11786 | found_object = 1; | |
c7d46a38 | 11787 | } |
74960c60 | 11788 | |
b775012e LM |
11789 | /* We have already handled this address, update it so that we don't |
11790 | have to go through updates again. */ | |
11791 | last_addr = old_loc->address; | |
11792 | ||
11793 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11794 | if (!found_object) | |
11795 | force_breakpoint_reinsertion (old_loc); | |
11796 | ||
4a64f543 MS |
11797 | /* If this location is no longer present, and inserted, look if |
11798 | there's maybe a new location at the same address. If so, | |
11799 | mark that one inserted, and don't remove this one. This is | |
11800 | needed so that we don't have a time window where a breakpoint | |
11801 | at certain location is not inserted. */ | |
74960c60 | 11802 | |
876fa593 | 11803 | if (old_loc->inserted) |
0d381245 | 11804 | { |
4a64f543 MS |
11805 | /* If the location is inserted now, we might have to remove |
11806 | it. */ | |
74960c60 | 11807 | |
876fa593 | 11808 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11809 | { |
4a64f543 MS |
11810 | /* The location is still present in the location list, |
11811 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11812 | keep_in_target = 1; |
74960c60 VP |
11813 | } |
11814 | else | |
11815 | { | |
b775012e LM |
11816 | /* This location still exists, but it won't be kept in the |
11817 | target since it may have been disabled. We proceed to | |
11818 | remove its target-side condition. */ | |
11819 | ||
4a64f543 MS |
11820 | /* The location is either no longer present, or got |
11821 | disabled. See if there's another location at the | |
11822 | same address, in which case we don't need to remove | |
11823 | this one from the target. */ | |
876fa593 | 11824 | |
2bdf28a0 | 11825 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11826 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11827 | { | |
876fa593 | 11828 | for (loc2p = locp; |
f5336ca5 | 11829 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11830 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11831 | loc2p++) |
11832 | { | |
11833 | struct bp_location *loc2 = *loc2p; | |
11834 | ||
2d134ed3 | 11835 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11836 | { |
85d721b8 PA |
11837 | /* Read watchpoint locations are switched to |
11838 | access watchpoints, if the former are not | |
11839 | supported, but the latter are. */ | |
11840 | if (is_hardware_watchpoint (old_loc->owner)) | |
11841 | { | |
11842 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11843 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11844 | } | |
11845 | ||
934709f0 PW |
11846 | /* loc2 is a duplicated location. We need to check |
11847 | if it should be inserted in case it will be | |
11848 | unduplicated. */ | |
11849 | if (loc2 != old_loc | |
11850 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11851 | { |
934709f0 | 11852 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11853 | keep_in_target = 1; |
11854 | break; | |
11855 | } | |
876fa593 JK |
11856 | } |
11857 | } | |
11858 | } | |
74960c60 VP |
11859 | } |
11860 | ||
20874c92 VP |
11861 | if (!keep_in_target) |
11862 | { | |
834c0d03 | 11863 | if (remove_breakpoint (old_loc)) |
20874c92 | 11864 | { |
4a64f543 MS |
11865 | /* This is just about all we can do. We could keep |
11866 | this location on the global list, and try to | |
11867 | remove it next time, but there's no particular | |
11868 | reason why we will succeed next time. | |
20874c92 | 11869 | |
4a64f543 MS |
11870 | Note that at this point, old_loc->owner is still |
11871 | valid, as delete_breakpoint frees the breakpoint | |
11872 | only after calling us. */ | |
3e43a32a MS |
11873 | printf_filtered (_("warning: Error removing " |
11874 | "breakpoint %d\n"), | |
876fa593 | 11875 | old_loc->owner->number); |
20874c92 VP |
11876 | } |
11877 | removed = 1; | |
11878 | } | |
0d381245 | 11879 | } |
74960c60 VP |
11880 | |
11881 | if (!found_object) | |
1c5cfe86 | 11882 | { |
fbea99ea | 11883 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11884 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11885 | { |
db82e815 PA |
11886 | /* This location was removed from the target. In |
11887 | non-stop mode, a race condition is possible where | |
11888 | we've removed a breakpoint, but stop events for that | |
11889 | breakpoint are already queued and will arrive later. | |
11890 | We apply an heuristic to be able to distinguish such | |
11891 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11892 | breakpoint location for a bit, and will retire it | |
11893 | after we see some number of events. The theory here | |
11894 | is that reporting of events should, "on the average", | |
11895 | be fair, so after a while we'll see events from all | |
11896 | threads that have anything of interest, and no longer | |
11897 | need to keep this breakpoint location around. We | |
11898 | don't hold locations forever so to reduce chances of | |
11899 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11900 | SIGTRAP. | |
11901 | ||
11902 | The heuristic failing can be disastrous on | |
11903 | decr_pc_after_break targets. | |
11904 | ||
11905 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11906 | if we fail to recognize a late breakpoint SIGTRAP, | |
11907 | because events_till_retirement has reached 0 too | |
11908 | soon, we'll fail to do the PC adjustment, and report | |
11909 | a random SIGTRAP to the user. When the user resumes | |
11910 | the inferior, it will most likely immediately crash | |
2dec564e | 11911 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11912 | corrupted, because of being resumed e.g., in the |
11913 | middle of a multi-byte instruction, or skipped a | |
11914 | one-byte instruction. This was actually seen happen | |
11915 | on native x86-linux, and should be less rare on | |
11916 | targets that do not support new thread events, like | |
11917 | remote, due to the heuristic depending on | |
11918 | thread_count. | |
11919 | ||
11920 | Mistaking a random SIGTRAP for a breakpoint trap | |
11921 | causes similar symptoms (PC adjustment applied when | |
11922 | it shouldn't), but then again, playing with SIGTRAPs | |
11923 | behind the debugger's back is asking for trouble. | |
11924 | ||
11925 | Since hardware watchpoint traps are always | |
11926 | distinguishable from other traps, so we don't need to | |
11927 | apply keep hardware watchpoint moribund locations | |
11928 | around. We simply always ignore hardware watchpoint | |
11929 | traps we can no longer explain. */ | |
11930 | ||
876fa593 JK |
11931 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11932 | old_loc->owner = NULL; | |
20874c92 | 11933 | |
1123588c | 11934 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11935 | } |
11936 | else | |
f431efe5 PA |
11937 | { |
11938 | old_loc->owner = NULL; | |
11939 | decref_bp_location (&old_loc); | |
11940 | } | |
20874c92 | 11941 | } |
74960c60 | 11942 | } |
1c5cfe86 | 11943 | |
348d480f PA |
11944 | /* Rescan breakpoints at the same address and section, marking the |
11945 | first one as "first" and any others as "duplicates". This is so | |
11946 | that the bpt instruction is only inserted once. If we have a | |
11947 | permanent breakpoint at the same place as BPT, make that one the | |
11948 | official one, and the rest as duplicates. Permanent breakpoints | |
11949 | are sorted first for the same address. | |
11950 | ||
11951 | Do the same for hardware watchpoints, but also considering the | |
11952 | watchpoint's type (regular/access/read) and length. */ | |
11953 | ||
11954 | bp_loc_first = NULL; | |
11955 | wp_loc_first = NULL; | |
11956 | awp_loc_first = NULL; | |
11957 | rwp_loc_first = NULL; | |
11958 | ALL_BP_LOCATIONS (loc, locp) | |
11959 | { | |
11960 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11961 | non-NULL. */ | |
348d480f | 11962 | struct bp_location **loc_first_p; |
d3fbdd86 | 11963 | b = loc->owner; |
348d480f | 11964 | |
6f380991 | 11965 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 11966 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
11967 | /* Don't detect duplicate for tracepoint locations because they are |
11968 | never duplicated. See the comments in field `duplicate' of | |
11969 | `struct bp_location'. */ | |
348d480f | 11970 | || is_tracepoint (b)) |
b775012e LM |
11971 | { |
11972 | /* Clear the condition modification flag. */ | |
11973 | loc->condition_changed = condition_unchanged; | |
11974 | continue; | |
11975 | } | |
348d480f | 11976 | |
348d480f PA |
11977 | if (b->type == bp_hardware_watchpoint) |
11978 | loc_first_p = &wp_loc_first; | |
11979 | else if (b->type == bp_read_watchpoint) | |
11980 | loc_first_p = &rwp_loc_first; | |
11981 | else if (b->type == bp_access_watchpoint) | |
11982 | loc_first_p = &awp_loc_first; | |
11983 | else | |
11984 | loc_first_p = &bp_loc_first; | |
11985 | ||
11986 | if (*loc_first_p == NULL | |
11987 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11988 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11989 | { | |
11990 | *loc_first_p = loc; | |
11991 | loc->duplicate = 0; | |
b775012e LM |
11992 | |
11993 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11994 | { | |
11995 | loc->needs_update = 1; | |
11996 | /* Clear the condition modification flag. */ | |
11997 | loc->condition_changed = condition_unchanged; | |
11998 | } | |
348d480f PA |
11999 | continue; |
12000 | } | |
12001 | ||
934709f0 PW |
12002 | |
12003 | /* This and the above ensure the invariant that the first location | |
12004 | is not duplicated, and is the inserted one. | |
12005 | All following are marked as duplicated, and are not inserted. */ | |
12006 | if (loc->inserted) | |
12007 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12008 | loc->duplicate = 1; |
12009 | ||
b775012e LM |
12010 | /* Clear the condition modification flag. */ |
12011 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12012 | } |
12013 | ||
a25a5a45 | 12014 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12015 | { |
04086b45 | 12016 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12017 | insert_breakpoint_locations (); |
12018 | else | |
12019 | { | |
44702360 PA |
12020 | /* Even though the caller told us to not insert new |
12021 | locations, we may still need to update conditions on the | |
12022 | target's side of breakpoints that were already inserted | |
12023 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12024 | only update conditions for locations that are marked |
12025 | "needs_update". */ | |
12026 | update_inserted_breakpoint_locations (); | |
12027 | } | |
12028 | } | |
348d480f | 12029 | |
04086b45 | 12030 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12031 | download_tracepoint_locations (); |
348d480f PA |
12032 | } |
12033 | ||
12034 | void | |
12035 | breakpoint_retire_moribund (void) | |
12036 | { | |
1123588c TT |
12037 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12038 | { | |
12039 | struct bp_location *loc = moribund_locations[ix]; | |
12040 | if (--(loc->events_till_retirement) == 0) | |
12041 | { | |
12042 | decref_bp_location (&loc); | |
12043 | unordered_remove (moribund_locations, ix); | |
12044 | --ix; | |
12045 | } | |
12046 | } | |
348d480f PA |
12047 | } |
12048 | ||
12049 | static void | |
44702360 | 12050 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12051 | { |
348d480f | 12052 | |
492d29ea PA |
12053 | TRY |
12054 | { | |
12055 | update_global_location_list (insert_mode); | |
12056 | } | |
12057 | CATCH (e, RETURN_MASK_ERROR) | |
12058 | { | |
12059 | } | |
12060 | END_CATCH | |
348d480f PA |
12061 | } |
12062 | ||
12063 | /* Clear BKP from a BPS. */ | |
12064 | ||
12065 | static void | |
12066 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12067 | { | |
12068 | bpstat bs; | |
12069 | ||
12070 | for (bs = bps; bs; bs = bs->next) | |
12071 | if (bs->breakpoint_at == bpt) | |
12072 | { | |
12073 | bs->breakpoint_at = NULL; | |
12074 | bs->old_val = NULL; | |
12075 | /* bs->commands will be freed later. */ | |
12076 | } | |
12077 | } | |
12078 | ||
12079 | /* Callback for iterate_over_threads. */ | |
12080 | static int | |
12081 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12082 | { | |
9a3c8263 | 12083 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12084 | |
12085 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12086 | return 0; | |
12087 | } | |
12088 | ||
12089 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12090 | callbacks. */ | |
12091 | ||
12092 | static void | |
12093 | say_where (struct breakpoint *b) | |
12094 | { | |
12095 | struct value_print_options opts; | |
12096 | ||
12097 | get_user_print_options (&opts); | |
12098 | ||
12099 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12100 | single string. */ | |
12101 | if (b->loc == NULL) | |
12102 | { | |
f00aae0f KS |
12103 | /* For pending locations, the output differs slightly based |
12104 | on b->extra_string. If this is non-NULL, it contains either | |
12105 | a condition or dprintf arguments. */ | |
12106 | if (b->extra_string == NULL) | |
12107 | { | |
12108 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12109 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12110 | } |
12111 | else if (b->type == bp_dprintf) | |
12112 | { | |
12113 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12114 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12115 | b->extra_string); |
12116 | } | |
12117 | else | |
12118 | { | |
12119 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12120 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12121 | b->extra_string); |
12122 | } | |
348d480f PA |
12123 | } |
12124 | else | |
12125 | { | |
2f202fde | 12126 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12127 | { |
12128 | printf_filtered (" at "); | |
2636d81d PW |
12129 | fputs_styled (paddress (b->loc->gdbarch, b->loc->address), |
12130 | address_style.style (), | |
12131 | gdb_stdout); | |
348d480f | 12132 | } |
2f202fde | 12133 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12134 | { |
12135 | /* If there is a single location, we can print the location | |
12136 | more nicely. */ | |
12137 | if (b->loc->next == NULL) | |
0bb296cb TT |
12138 | { |
12139 | puts_filtered (": file "); | |
12140 | fputs_styled (symtab_to_filename_for_display (b->loc->symtab), | |
12141 | file_name_style.style (), | |
12142 | gdb_stdout); | |
12143 | printf_filtered (", line %d.", | |
12144 | b->loc->line_number); | |
12145 | } | |
f8eba3c6 TT |
12146 | else |
12147 | /* This is not ideal, but each location may have a | |
12148 | different file name, and this at least reflects the | |
12149 | real situation somewhat. */ | |
f00aae0f | 12150 | printf_filtered (": %s.", |
d28cd78a | 12151 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12152 | } |
348d480f PA |
12153 | |
12154 | if (b->loc->next) | |
12155 | { | |
12156 | struct bp_location *loc = b->loc; | |
12157 | int n = 0; | |
12158 | for (; loc; loc = loc->next) | |
12159 | ++n; | |
12160 | printf_filtered (" (%d locations)", n); | |
12161 | } | |
12162 | } | |
12163 | } | |
12164 | ||
5f486660 | 12165 | bp_location::~bp_location () |
348d480f | 12166 | { |
5f486660 | 12167 | xfree (function_name); |
348d480f PA |
12168 | } |
12169 | ||
c1fc2657 | 12170 | /* Destructor for the breakpoint base class. */ |
348d480f | 12171 | |
c1fc2657 | 12172 | breakpoint::~breakpoint () |
348d480f | 12173 | { |
c1fc2657 SM |
12174 | xfree (this->cond_string); |
12175 | xfree (this->extra_string); | |
12176 | xfree (this->filter); | |
348d480f PA |
12177 | } |
12178 | ||
2060206e PA |
12179 | static struct bp_location * |
12180 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12181 | { |
5f486660 | 12182 | return new bp_location (self); |
348d480f PA |
12183 | } |
12184 | ||
2060206e PA |
12185 | static void |
12186 | base_breakpoint_re_set (struct breakpoint *b) | |
12187 | { | |
12188 | /* Nothing to re-set. */ | |
12189 | } | |
12190 | ||
12191 | #define internal_error_pure_virtual_called() \ | |
12192 | gdb_assert_not_reached ("pure virtual function called") | |
12193 | ||
12194 | static int | |
12195 | base_breakpoint_insert_location (struct bp_location *bl) | |
12196 | { | |
12197 | internal_error_pure_virtual_called (); | |
12198 | } | |
12199 | ||
12200 | static int | |
73971819 PA |
12201 | base_breakpoint_remove_location (struct bp_location *bl, |
12202 | enum remove_bp_reason reason) | |
2060206e PA |
12203 | { |
12204 | internal_error_pure_virtual_called (); | |
12205 | } | |
12206 | ||
12207 | static int | |
12208 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12209 | const address_space *aspace, |
09ac7c10 TT |
12210 | CORE_ADDR bp_addr, |
12211 | const struct target_waitstatus *ws) | |
2060206e PA |
12212 | { |
12213 | internal_error_pure_virtual_called (); | |
12214 | } | |
12215 | ||
12216 | static void | |
12217 | base_breakpoint_check_status (bpstat bs) | |
12218 | { | |
12219 | /* Always stop. */ | |
12220 | } | |
12221 | ||
12222 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12223 | errors. */ | |
12224 | ||
12225 | static int | |
12226 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12227 | { | |
12228 | internal_error_pure_virtual_called (); | |
12229 | } | |
12230 | ||
12231 | /* A "resources_needed" breakpoint_ops method that just internal | |
12232 | errors. */ | |
12233 | ||
12234 | static int | |
12235 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12236 | { | |
12237 | internal_error_pure_virtual_called (); | |
12238 | } | |
12239 | ||
12240 | static enum print_stop_action | |
12241 | base_breakpoint_print_it (bpstat bs) | |
12242 | { | |
12243 | internal_error_pure_virtual_called (); | |
12244 | } | |
12245 | ||
12246 | static void | |
12247 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12248 | struct ui_out *uiout) | |
12249 | { | |
12250 | /* nothing */ | |
12251 | } | |
12252 | ||
12253 | static void | |
12254 | base_breakpoint_print_mention (struct breakpoint *b) | |
12255 | { | |
12256 | internal_error_pure_virtual_called (); | |
12257 | } | |
12258 | ||
12259 | static void | |
12260 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12261 | { | |
12262 | internal_error_pure_virtual_called (); | |
12263 | } | |
12264 | ||
983af33b | 12265 | static void |
f00aae0f KS |
12266 | base_breakpoint_create_sals_from_location |
12267 | (const struct event_location *location, | |
12268 | struct linespec_result *canonical, | |
12269 | enum bptype type_wanted) | |
983af33b SDJ |
12270 | { |
12271 | internal_error_pure_virtual_called (); | |
12272 | } | |
12273 | ||
12274 | static void | |
12275 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12276 | struct linespec_result *c, | |
e1e01040 PA |
12277 | gdb::unique_xmalloc_ptr<char> cond_string, |
12278 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12279 | enum bptype type_wanted, |
12280 | enum bpdisp disposition, | |
12281 | int thread, | |
12282 | int task, int ignore_count, | |
12283 | const struct breakpoint_ops *o, | |
12284 | int from_tty, int enabled, | |
44f238bb | 12285 | int internal, unsigned flags) |
983af33b SDJ |
12286 | { |
12287 | internal_error_pure_virtual_called (); | |
12288 | } | |
12289 | ||
6c5b2ebe | 12290 | static std::vector<symtab_and_line> |
f00aae0f KS |
12291 | base_breakpoint_decode_location (struct breakpoint *b, |
12292 | const struct event_location *location, | |
6c5b2ebe | 12293 | struct program_space *search_pspace) |
983af33b SDJ |
12294 | { |
12295 | internal_error_pure_virtual_called (); | |
12296 | } | |
12297 | ||
ab04a2af TT |
12298 | /* The default 'explains_signal' method. */ |
12299 | ||
47591c29 | 12300 | static int |
427cd150 | 12301 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12302 | { |
47591c29 | 12303 | return 1; |
ab04a2af TT |
12304 | } |
12305 | ||
9d6e6e84 HZ |
12306 | /* The default "after_condition_true" method. */ |
12307 | ||
12308 | static void | |
12309 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12310 | { | |
12311 | /* Nothing to do. */ | |
12312 | } | |
12313 | ||
ab04a2af | 12314 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12315 | { |
2060206e PA |
12316 | base_breakpoint_allocate_location, |
12317 | base_breakpoint_re_set, | |
12318 | base_breakpoint_insert_location, | |
12319 | base_breakpoint_remove_location, | |
12320 | base_breakpoint_breakpoint_hit, | |
12321 | base_breakpoint_check_status, | |
12322 | base_breakpoint_resources_needed, | |
12323 | base_breakpoint_works_in_software_mode, | |
12324 | base_breakpoint_print_it, | |
12325 | NULL, | |
12326 | base_breakpoint_print_one_detail, | |
12327 | base_breakpoint_print_mention, | |
983af33b | 12328 | base_breakpoint_print_recreate, |
5f700d83 | 12329 | base_breakpoint_create_sals_from_location, |
983af33b | 12330 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12331 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12332 | base_breakpoint_explains_signal, |
12333 | base_breakpoint_after_condition_true, | |
2060206e PA |
12334 | }; |
12335 | ||
12336 | /* Default breakpoint_ops methods. */ | |
12337 | ||
12338 | static void | |
348d480f PA |
12339 | bkpt_re_set (struct breakpoint *b) |
12340 | { | |
06edf0c0 | 12341 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12342 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12343 | { |
f00aae0f | 12344 | /* Anything without a location can't be re-set. */ |
348d480f | 12345 | delete_breakpoint (b); |
06edf0c0 | 12346 | return; |
348d480f | 12347 | } |
06edf0c0 PA |
12348 | |
12349 | breakpoint_re_set_default (b); | |
348d480f PA |
12350 | } |
12351 | ||
2060206e | 12352 | static int |
348d480f PA |
12353 | bkpt_insert_location (struct bp_location *bl) |
12354 | { | |
cd6c3b4f YQ |
12355 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12356 | ||
579c6ad9 | 12357 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12358 | bl->target_info.placed_address = addr; |
12359 | ||
348d480f | 12360 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12361 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12362 | else |
7c16b83e | 12363 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12364 | } |
12365 | ||
2060206e | 12366 | static int |
73971819 | 12367 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12368 | { |
12369 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12370 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12371 | else | |
73971819 | 12372 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12373 | } |
12374 | ||
2060206e | 12375 | static int |
348d480f | 12376 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12377 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12378 | const struct target_waitstatus *ws) |
348d480f | 12379 | { |
09ac7c10 | 12380 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12381 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12382 | return 0; |
12383 | ||
348d480f PA |
12384 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12385 | aspace, bp_addr)) | |
12386 | return 0; | |
12387 | ||
12388 | if (overlay_debugging /* unmapped overlay section */ | |
12389 | && section_is_overlay (bl->section) | |
12390 | && !section_is_mapped (bl->section)) | |
12391 | return 0; | |
12392 | ||
12393 | return 1; | |
12394 | } | |
12395 | ||
cd1608cc PA |
12396 | static int |
12397 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12398 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12399 | const struct target_waitstatus *ws) |
12400 | { | |
12401 | if (dprintf_style == dprintf_style_agent | |
12402 | && target_can_run_breakpoint_commands ()) | |
12403 | { | |
12404 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12405 | for this address it must be for a breakpoint that happens to | |
12406 | be set at the same address. */ | |
12407 | return 0; | |
12408 | } | |
12409 | ||
12410 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12411 | } | |
12412 | ||
2060206e | 12413 | static int |
348d480f PA |
12414 | bkpt_resources_needed (const struct bp_location *bl) |
12415 | { | |
12416 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12417 | ||
12418 | return 1; | |
12419 | } | |
12420 | ||
2060206e | 12421 | static enum print_stop_action |
348d480f PA |
12422 | bkpt_print_it (bpstat bs) |
12423 | { | |
348d480f PA |
12424 | struct breakpoint *b; |
12425 | const struct bp_location *bl; | |
001c8c33 | 12426 | int bp_temp; |
79a45e25 | 12427 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12428 | |
12429 | gdb_assert (bs->bp_location_at != NULL); | |
12430 | ||
12431 | bl = bs->bp_location_at; | |
12432 | b = bs->breakpoint_at; | |
12433 | ||
001c8c33 PA |
12434 | bp_temp = b->disposition == disp_del; |
12435 | if (bl->address != bl->requested_address) | |
12436 | breakpoint_adjustment_warning (bl->requested_address, | |
12437 | bl->address, | |
12438 | b->number, 1); | |
12439 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12440 | maybe_print_thread_hit_breakpoint (uiout); |
12441 | ||
001c8c33 | 12442 | if (bp_temp) |
112e8700 | 12443 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12444 | else |
112e8700 SM |
12445 | uiout->text ("Breakpoint "); |
12446 | if (uiout->is_mi_like_p ()) | |
348d480f | 12447 | { |
112e8700 | 12448 | uiout->field_string ("reason", |
001c8c33 | 12449 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12450 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12451 | } |
112e8700 SM |
12452 | uiout->field_int ("bkptno", b->number); |
12453 | uiout->text (", "); | |
06edf0c0 | 12454 | |
001c8c33 | 12455 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12456 | } |
12457 | ||
2060206e | 12458 | static void |
06edf0c0 PA |
12459 | bkpt_print_mention (struct breakpoint *b) |
12460 | { | |
112e8700 | 12461 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12462 | return; |
12463 | ||
12464 | switch (b->type) | |
12465 | { | |
12466 | case bp_breakpoint: | |
12467 | case bp_gnu_ifunc_resolver: | |
12468 | if (b->disposition == disp_del) | |
12469 | printf_filtered (_("Temporary breakpoint")); | |
12470 | else | |
12471 | printf_filtered (_("Breakpoint")); | |
12472 | printf_filtered (_(" %d"), b->number); | |
12473 | if (b->type == bp_gnu_ifunc_resolver) | |
12474 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12475 | break; | |
12476 | case bp_hardware_breakpoint: | |
12477 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12478 | break; | |
e7e0cddf SS |
12479 | case bp_dprintf: |
12480 | printf_filtered (_("Dprintf %d"), b->number); | |
12481 | break; | |
06edf0c0 PA |
12482 | } |
12483 | ||
12484 | say_where (b); | |
12485 | } | |
12486 | ||
2060206e | 12487 | static void |
06edf0c0 PA |
12488 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12489 | { | |
12490 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12491 | fprintf_unfiltered (fp, "tbreak"); | |
12492 | else if (tp->type == bp_breakpoint) | |
12493 | fprintf_unfiltered (fp, "break"); | |
12494 | else if (tp->type == bp_hardware_breakpoint | |
12495 | && tp->disposition == disp_del) | |
12496 | fprintf_unfiltered (fp, "thbreak"); | |
12497 | else if (tp->type == bp_hardware_breakpoint) | |
12498 | fprintf_unfiltered (fp, "hbreak"); | |
12499 | else | |
12500 | internal_error (__FILE__, __LINE__, | |
12501 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12502 | ||
f00aae0f | 12503 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12504 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12505 | |
12506 | /* Print out extra_string if this breakpoint is pending. It might | |
12507 | contain, for example, conditions that were set by the user. */ | |
12508 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12509 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12510 | ||
dd11a36c | 12511 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12512 | } |
12513 | ||
983af33b | 12514 | static void |
f00aae0f KS |
12515 | bkpt_create_sals_from_location (const struct event_location *location, |
12516 | struct linespec_result *canonical, | |
12517 | enum bptype type_wanted) | |
983af33b | 12518 | { |
f00aae0f | 12519 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12520 | } |
12521 | ||
12522 | static void | |
12523 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12524 | struct linespec_result *canonical, | |
e1e01040 PA |
12525 | gdb::unique_xmalloc_ptr<char> cond_string, |
12526 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12527 | enum bptype type_wanted, |
12528 | enum bpdisp disposition, | |
12529 | int thread, | |
12530 | int task, int ignore_count, | |
12531 | const struct breakpoint_ops *ops, | |
12532 | int from_tty, int enabled, | |
44f238bb | 12533 | int internal, unsigned flags) |
983af33b | 12534 | { |
023fa29b | 12535 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12536 | std::move (cond_string), |
12537 | std::move (extra_string), | |
e7e0cddf | 12538 | type_wanted, |
983af33b SDJ |
12539 | disposition, thread, task, |
12540 | ignore_count, ops, from_tty, | |
44f238bb | 12541 | enabled, internal, flags); |
983af33b SDJ |
12542 | } |
12543 | ||
6c5b2ebe | 12544 | static std::vector<symtab_and_line> |
f00aae0f KS |
12545 | bkpt_decode_location (struct breakpoint *b, |
12546 | const struct event_location *location, | |
6c5b2ebe | 12547 | struct program_space *search_pspace) |
983af33b | 12548 | { |
6c5b2ebe | 12549 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12550 | } |
12551 | ||
06edf0c0 PA |
12552 | /* Virtual table for internal breakpoints. */ |
12553 | ||
12554 | static void | |
12555 | internal_bkpt_re_set (struct breakpoint *b) | |
12556 | { | |
12557 | switch (b->type) | |
12558 | { | |
12559 | /* Delete overlay event and longjmp master breakpoints; they | |
12560 | will be reset later by breakpoint_re_set. */ | |
12561 | case bp_overlay_event: | |
12562 | case bp_longjmp_master: | |
12563 | case bp_std_terminate_master: | |
12564 | case bp_exception_master: | |
12565 | delete_breakpoint (b); | |
12566 | break; | |
12567 | ||
12568 | /* This breakpoint is special, it's set up when the inferior | |
12569 | starts and we really don't want to touch it. */ | |
12570 | case bp_shlib_event: | |
12571 | ||
12572 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12573 | it is set up, we do not want to touch it. */ | |
12574 | case bp_thread_event: | |
12575 | break; | |
12576 | } | |
12577 | } | |
12578 | ||
12579 | static void | |
12580 | internal_bkpt_check_status (bpstat bs) | |
12581 | { | |
a9b3a50f PA |
12582 | if (bs->breakpoint_at->type == bp_shlib_event) |
12583 | { | |
12584 | /* If requested, stop when the dynamic linker notifies GDB of | |
12585 | events. This allows the user to get control and place | |
12586 | breakpoints in initializer routines for dynamically loaded | |
12587 | objects (among other things). */ | |
12588 | bs->stop = stop_on_solib_events; | |
12589 | bs->print = stop_on_solib_events; | |
12590 | } | |
12591 | else | |
12592 | bs->stop = 0; | |
06edf0c0 PA |
12593 | } |
12594 | ||
12595 | static enum print_stop_action | |
12596 | internal_bkpt_print_it (bpstat bs) | |
12597 | { | |
06edf0c0 | 12598 | struct breakpoint *b; |
06edf0c0 | 12599 | |
06edf0c0 PA |
12600 | b = bs->breakpoint_at; |
12601 | ||
06edf0c0 PA |
12602 | switch (b->type) |
12603 | { | |
348d480f PA |
12604 | case bp_shlib_event: |
12605 | /* Did we stop because the user set the stop_on_solib_events | |
12606 | variable? (If so, we report this as a generic, "Stopped due | |
12607 | to shlib event" message.) */ | |
edcc5120 | 12608 | print_solib_event (0); |
348d480f PA |
12609 | break; |
12610 | ||
12611 | case bp_thread_event: | |
12612 | /* Not sure how we will get here. | |
12613 | GDB should not stop for these breakpoints. */ | |
12614 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12615 | break; |
12616 | ||
12617 | case bp_overlay_event: | |
12618 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12619 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12620 | break; |
12621 | ||
12622 | case bp_longjmp_master: | |
12623 | /* These should never be enabled. */ | |
12624 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12625 | break; |
12626 | ||
12627 | case bp_std_terminate_master: | |
12628 | /* These should never be enabled. */ | |
12629 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12630 | "gdb should not stop!\n")); | |
348d480f PA |
12631 | break; |
12632 | ||
12633 | case bp_exception_master: | |
12634 | /* These should never be enabled. */ | |
12635 | printf_filtered (_("Exception Master Breakpoint: " | |
12636 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12637 | break; |
12638 | } | |
12639 | ||
001c8c33 | 12640 | return PRINT_NOTHING; |
06edf0c0 PA |
12641 | } |
12642 | ||
12643 | static void | |
12644 | internal_bkpt_print_mention (struct breakpoint *b) | |
12645 | { | |
12646 | /* Nothing to mention. These breakpoints are internal. */ | |
12647 | } | |
12648 | ||
06edf0c0 PA |
12649 | /* Virtual table for momentary breakpoints */ |
12650 | ||
12651 | static void | |
12652 | momentary_bkpt_re_set (struct breakpoint *b) | |
12653 | { | |
12654 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12655 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12656 | Otherwise these should have been blown away via the cleanup chain |
12657 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12658 | } | |
12659 | ||
12660 | static void | |
12661 | momentary_bkpt_check_status (bpstat bs) | |
12662 | { | |
12663 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12664 | } | |
12665 | ||
12666 | static enum print_stop_action | |
12667 | momentary_bkpt_print_it (bpstat bs) | |
12668 | { | |
001c8c33 | 12669 | return PRINT_UNKNOWN; |
348d480f PA |
12670 | } |
12671 | ||
06edf0c0 PA |
12672 | static void |
12673 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12674 | { |
06edf0c0 | 12675 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12676 | } |
12677 | ||
e2e4d78b JK |
12678 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12679 | ||
12680 | It gets cleared already on the removal of the first one of such placed | |
12681 | breakpoints. This is OK as they get all removed altogether. */ | |
12682 | ||
c1fc2657 | 12683 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12684 | { |
c1fc2657 | 12685 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12686 | |
c1fc2657 | 12687 | if (tp != NULL) |
e2e4d78b | 12688 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12689 | } |
12690 | ||
55aa24fb SDJ |
12691 | /* Specific methods for probe breakpoints. */ |
12692 | ||
12693 | static int | |
12694 | bkpt_probe_insert_location (struct bp_location *bl) | |
12695 | { | |
12696 | int v = bkpt_insert_location (bl); | |
12697 | ||
12698 | if (v == 0) | |
12699 | { | |
12700 | /* The insertion was successful, now let's set the probe's semaphore | |
12701 | if needed. */ | |
935676c9 | 12702 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12703 | } |
12704 | ||
12705 | return v; | |
12706 | } | |
12707 | ||
12708 | static int | |
73971819 PA |
12709 | bkpt_probe_remove_location (struct bp_location *bl, |
12710 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12711 | { |
12712 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12713 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12714 | |
73971819 | 12715 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12716 | } |
12717 | ||
12718 | static void | |
f00aae0f | 12719 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12720 | struct linespec_result *canonical, |
f00aae0f | 12721 | enum bptype type_wanted) |
55aa24fb SDJ |
12722 | { |
12723 | struct linespec_sals lsal; | |
12724 | ||
c2f4122d | 12725 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12726 | lsal.canonical |
12727 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12728 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12729 | } |
12730 | ||
6c5b2ebe | 12731 | static std::vector<symtab_and_line> |
f00aae0f KS |
12732 | bkpt_probe_decode_location (struct breakpoint *b, |
12733 | const struct event_location *location, | |
6c5b2ebe | 12734 | struct program_space *search_pspace) |
55aa24fb | 12735 | { |
6c5b2ebe PA |
12736 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12737 | if (sals.empty ()) | |
55aa24fb | 12738 | error (_("probe not found")); |
6c5b2ebe | 12739 | return sals; |
55aa24fb SDJ |
12740 | } |
12741 | ||
348d480f | 12742 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12743 | |
348d480f PA |
12744 | static void |
12745 | tracepoint_re_set (struct breakpoint *b) | |
12746 | { | |
12747 | breakpoint_re_set_default (b); | |
12748 | } | |
876fa593 | 12749 | |
348d480f PA |
12750 | static int |
12751 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12752 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12753 | const struct target_waitstatus *ws) |
348d480f PA |
12754 | { |
12755 | /* By definition, the inferior does not report stops at | |
12756 | tracepoints. */ | |
12757 | return 0; | |
74960c60 VP |
12758 | } |
12759 | ||
12760 | static void | |
348d480f PA |
12761 | tracepoint_print_one_detail (const struct breakpoint *self, |
12762 | struct ui_out *uiout) | |
74960c60 | 12763 | { |
d9b3f62e | 12764 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12765 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12766 | { |
12767 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12768 | |
112e8700 SM |
12769 | uiout->text ("\tmarker id is "); |
12770 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12771 | tp->static_trace_marker_id); |
112e8700 | 12772 | uiout->text ("\n"); |
348d480f | 12773 | } |
0d381245 VP |
12774 | } |
12775 | ||
a474d7c2 | 12776 | static void |
348d480f | 12777 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12778 | { |
112e8700 | 12779 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12780 | return; |
cc59ec59 | 12781 | |
348d480f PA |
12782 | switch (b->type) |
12783 | { | |
12784 | case bp_tracepoint: | |
12785 | printf_filtered (_("Tracepoint")); | |
12786 | printf_filtered (_(" %d"), b->number); | |
12787 | break; | |
12788 | case bp_fast_tracepoint: | |
12789 | printf_filtered (_("Fast tracepoint")); | |
12790 | printf_filtered (_(" %d"), b->number); | |
12791 | break; | |
12792 | case bp_static_tracepoint: | |
12793 | printf_filtered (_("Static tracepoint")); | |
12794 | printf_filtered (_(" %d"), b->number); | |
12795 | break; | |
12796 | default: | |
12797 | internal_error (__FILE__, __LINE__, | |
12798 | _("unhandled tracepoint type %d"), (int) b->type); | |
12799 | } | |
12800 | ||
12801 | say_where (b); | |
a474d7c2 PA |
12802 | } |
12803 | ||
348d480f | 12804 | static void |
d9b3f62e | 12805 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12806 | { |
d9b3f62e PA |
12807 | struct tracepoint *tp = (struct tracepoint *) self; |
12808 | ||
12809 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12810 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12811 | else if (self->type == bp_static_tracepoint) |
348d480f | 12812 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12813 | else if (self->type == bp_tracepoint) |
348d480f PA |
12814 | fprintf_unfiltered (fp, "trace"); |
12815 | else | |
12816 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12817 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12818 | |
f00aae0f | 12819 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12820 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12821 | print_recreate_thread (self, fp); |
12822 | ||
12823 | if (tp->pass_count) | |
12824 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12825 | } |
12826 | ||
983af33b | 12827 | static void |
f00aae0f KS |
12828 | tracepoint_create_sals_from_location (const struct event_location *location, |
12829 | struct linespec_result *canonical, | |
12830 | enum bptype type_wanted) | |
983af33b | 12831 | { |
f00aae0f | 12832 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12833 | } |
12834 | ||
12835 | static void | |
12836 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12837 | struct linespec_result *canonical, | |
e1e01040 PA |
12838 | gdb::unique_xmalloc_ptr<char> cond_string, |
12839 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12840 | enum bptype type_wanted, |
12841 | enum bpdisp disposition, | |
12842 | int thread, | |
12843 | int task, int ignore_count, | |
12844 | const struct breakpoint_ops *ops, | |
12845 | int from_tty, int enabled, | |
44f238bb | 12846 | int internal, unsigned flags) |
983af33b | 12847 | { |
023fa29b | 12848 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12849 | std::move (cond_string), |
12850 | std::move (extra_string), | |
e7e0cddf | 12851 | type_wanted, |
983af33b SDJ |
12852 | disposition, thread, task, |
12853 | ignore_count, ops, from_tty, | |
44f238bb | 12854 | enabled, internal, flags); |
983af33b SDJ |
12855 | } |
12856 | ||
6c5b2ebe | 12857 | static std::vector<symtab_and_line> |
f00aae0f KS |
12858 | tracepoint_decode_location (struct breakpoint *b, |
12859 | const struct event_location *location, | |
6c5b2ebe | 12860 | struct program_space *search_pspace) |
983af33b | 12861 | { |
6c5b2ebe | 12862 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12863 | } |
12864 | ||
2060206e | 12865 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12866 | |
55aa24fb SDJ |
12867 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12868 | static probe. */ | |
12869 | ||
12870 | static void | |
f00aae0f KS |
12871 | tracepoint_probe_create_sals_from_location |
12872 | (const struct event_location *location, | |
12873 | struct linespec_result *canonical, | |
12874 | enum bptype type_wanted) | |
55aa24fb SDJ |
12875 | { |
12876 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12877 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12878 | } |
12879 | ||
6c5b2ebe | 12880 | static std::vector<symtab_and_line> |
f00aae0f KS |
12881 | tracepoint_probe_decode_location (struct breakpoint *b, |
12882 | const struct event_location *location, | |
6c5b2ebe | 12883 | struct program_space *search_pspace) |
55aa24fb SDJ |
12884 | { |
12885 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12886 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12887 | } |
12888 | ||
12889 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12890 | ||
5c2b4418 HZ |
12891 | /* Dprintf breakpoint_ops methods. */ |
12892 | ||
12893 | static void | |
12894 | dprintf_re_set (struct breakpoint *b) | |
12895 | { | |
12896 | breakpoint_re_set_default (b); | |
12897 | ||
f00aae0f KS |
12898 | /* extra_string should never be non-NULL for dprintf. */ |
12899 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12900 | |
12901 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12902 | 2 - create a dprintf, which resolves fine. | |
12903 | 3 - disconnect from target 1 | |
12904 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12905 | ||
12906 | After steps #3/#4, you'll want the dprintf command list to | |
12907 | be updated, because target 1 and 2 may well return different | |
12908 | answers for target_can_run_breakpoint_commands(). | |
12909 | Given absence of finer grained resetting, we get to do | |
12910 | it all the time. */ | |
12911 | if (b->extra_string != NULL) | |
12912 | update_dprintf_command_list (b); | |
12913 | } | |
12914 | ||
2d9442cc HZ |
12915 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12916 | ||
12917 | static void | |
12918 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12919 | { | |
f00aae0f | 12920 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12921 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12922 | tp->extra_string); |
12923 | print_recreate_thread (tp, fp); | |
12924 | } | |
12925 | ||
9d6e6e84 HZ |
12926 | /* Implement the "after_condition_true" breakpoint_ops method for |
12927 | dprintf. | |
12928 | ||
12929 | dprintf's are implemented with regular commands in their command | |
12930 | list, but we run the commands here instead of before presenting the | |
12931 | stop to the user, as dprintf's don't actually cause a stop. This | |
12932 | also makes it so that the commands of multiple dprintfs at the same | |
12933 | address are all handled. */ | |
12934 | ||
12935 | static void | |
12936 | dprintf_after_condition_true (struct bpstats *bs) | |
12937 | { | |
04afa70c | 12938 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12939 | struct bpstats *tmp_bs_p = &tmp_bs; |
12940 | ||
12941 | /* dprintf's never cause a stop. This wasn't set in the | |
12942 | check_status hook instead because that would make the dprintf's | |
12943 | condition not be evaluated. */ | |
12944 | bs->stop = 0; | |
12945 | ||
12946 | /* Run the command list here. Take ownership of it instead of | |
12947 | copying. We never want these commands to run later in | |
12948 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12949 | be set at same address as this dprintf, or even if running the | |
12950 | commands here throws. */ | |
12951 | tmp_bs.commands = bs->commands; | |
12952 | bs->commands = NULL; | |
9d6e6e84 HZ |
12953 | |
12954 | bpstat_do_actions_1 (&tmp_bs_p); | |
12955 | ||
12956 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12957 | bpstat_do_actions_1 may return early without processing the whole | |
12958 | list. */ | |
9d6e6e84 HZ |
12959 | } |
12960 | ||
983af33b SDJ |
12961 | /* The breakpoint_ops structure to be used on static tracepoints with |
12962 | markers (`-m'). */ | |
12963 | ||
12964 | static void | |
f00aae0f | 12965 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12966 | struct linespec_result *canonical, |
f00aae0f | 12967 | enum bptype type_wanted) |
983af33b SDJ |
12968 | { |
12969 | struct linespec_sals lsal; | |
f00aae0f | 12970 | const char *arg_start, *arg; |
983af33b | 12971 | |
a20714ff | 12972 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12973 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12974 | |
f2fc3015 TT |
12975 | std::string str (arg_start, arg - arg_start); |
12976 | const char *ptr = str.c_str (); | |
a20714ff PA |
12977 | canonical->location |
12978 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12979 | |
8e9e35b1 TT |
12980 | lsal.canonical |
12981 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12982 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12983 | } |
12984 | ||
12985 | static void | |
12986 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12987 | struct linespec_result *canonical, | |
e1e01040 PA |
12988 | gdb::unique_xmalloc_ptr<char> cond_string, |
12989 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12990 | enum bptype type_wanted, |
12991 | enum bpdisp disposition, | |
12992 | int thread, | |
12993 | int task, int ignore_count, | |
12994 | const struct breakpoint_ops *ops, | |
12995 | int from_tty, int enabled, | |
44f238bb | 12996 | int internal, unsigned flags) |
983af33b | 12997 | { |
6c5b2ebe | 12998 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12999 | |
13000 | /* If the user is creating a static tracepoint by marker id | |
13001 | (strace -m MARKER_ID), then store the sals index, so that | |
13002 | breakpoint_re_set can try to match up which of the newly | |
13003 | found markers corresponds to this one, and, don't try to | |
13004 | expand multiple locations for each sal, given than SALS | |
13005 | already should contain all sals for MARKER_ID. */ | |
13006 | ||
6c5b2ebe | 13007 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13008 | { |
6c5b2ebe PA |
13009 | event_location_up location |
13010 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13011 | |
b270e6f9 | 13012 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13013 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13014 | std::move (location), NULL, |
e1e01040 PA |
13015 | std::move (cond_string), |
13016 | std::move (extra_string), | |
e7e0cddf | 13017 | type_wanted, disposition, |
983af33b | 13018 | thread, task, ignore_count, ops, |
44f238bb | 13019 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13020 | canonical->special_display); |
13021 | /* Given that its possible to have multiple markers with | |
13022 | the same string id, if the user is creating a static | |
13023 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13024 | store the sals index, so that breakpoint_re_set can | |
13025 | try to match up which of the newly found markers | |
13026 | corresponds to this one */ | |
13027 | tp->static_trace_marker_id_idx = i; | |
13028 | ||
b270e6f9 | 13029 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13030 | } |
13031 | } | |
13032 | ||
6c5b2ebe | 13033 | static std::vector<symtab_and_line> |
f00aae0f KS |
13034 | strace_marker_decode_location (struct breakpoint *b, |
13035 | const struct event_location *location, | |
6c5b2ebe | 13036 | struct program_space *search_pspace) |
983af33b SDJ |
13037 | { |
13038 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13039 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13040 | |
6c5b2ebe PA |
13041 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13042 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13043 | { |
6c5b2ebe PA |
13044 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13045 | sals.resize (1); | |
13046 | return sals; | |
983af33b SDJ |
13047 | } |
13048 | else | |
5d9310c4 | 13049 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13050 | } |
13051 | ||
13052 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13053 | ||
13054 | static int | |
13055 | strace_marker_p (struct breakpoint *b) | |
13056 | { | |
13057 | return b->ops == &strace_marker_breakpoint_ops; | |
13058 | } | |
13059 | ||
53a5351d | 13060 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13061 | structures. */ |
c906108c SS |
13062 | |
13063 | void | |
fba45db2 | 13064 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13065 | { |
52f0bd74 | 13066 | struct breakpoint *b; |
c906108c | 13067 | |
8a3fe4f8 | 13068 | gdb_assert (bpt != NULL); |
c906108c | 13069 | |
4a64f543 MS |
13070 | /* Has this bp already been deleted? This can happen because |
13071 | multiple lists can hold pointers to bp's. bpstat lists are | |
13072 | especial culprits. | |
13073 | ||
13074 | One example of this happening is a watchpoint's scope bp. When | |
13075 | the scope bp triggers, we notice that the watchpoint is out of | |
13076 | scope, and delete it. We also delete its scope bp. But the | |
13077 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13078 | That bpstat is then checked for auto-deleting bp's, which are | |
13079 | deleted. | |
13080 | ||
13081 | A real solution to this problem might involve reference counts in | |
13082 | bp's, and/or giving them pointers back to their referencing | |
13083 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13084 | storage when no more references were extent. A cheaper bandaid | |
13085 | was chosen. */ | |
c906108c SS |
13086 | if (bpt->type == bp_none) |
13087 | return; | |
13088 | ||
4a64f543 MS |
13089 | /* At least avoid this stale reference until the reference counting |
13090 | of breakpoints gets resolved. */ | |
d0fb5eae | 13091 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13092 | { |
d0fb5eae | 13093 | struct breakpoint *related; |
3a5c3e22 | 13094 | struct watchpoint *w; |
d0fb5eae JK |
13095 | |
13096 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13097 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13098 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13099 | w = (struct watchpoint *) bpt; |
13100 | else | |
13101 | w = NULL; | |
13102 | if (w != NULL) | |
13103 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13104 | |
13105 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13106 | for (related = bpt; related->related_breakpoint != bpt; | |
13107 | related = related->related_breakpoint); | |
13108 | related->related_breakpoint = bpt->related_breakpoint; | |
13109 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13110 | } |
13111 | ||
a9634178 TJB |
13112 | /* watch_command_1 creates a watchpoint but only sets its number if |
13113 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13114 | a problem in that process, we'll be asked to delete the half-created | |
13115 | watchpoint. In that case, don't announce the deletion. */ | |
13116 | if (bpt->number) | |
76727919 | 13117 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13118 | |
c906108c SS |
13119 | if (breakpoint_chain == bpt) |
13120 | breakpoint_chain = bpt->next; | |
13121 | ||
c906108c SS |
13122 | ALL_BREAKPOINTS (b) |
13123 | if (b->next == bpt) | |
c5aa993b JM |
13124 | { |
13125 | b->next = bpt->next; | |
13126 | break; | |
13127 | } | |
c906108c | 13128 | |
f431efe5 PA |
13129 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13130 | been freed. */ | |
13131 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13132 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13133 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13134 | commands are associated with the bpstat; if we remove it here, | |
13135 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13136 | event-top.c won't do anything, and temporary breakpoints with | |
13137 | commands won't work. */ | |
13138 | ||
13139 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13140 | ||
4a64f543 MS |
13141 | /* Now that breakpoint is removed from breakpoint list, update the |
13142 | global location list. This will remove locations that used to | |
13143 | belong to this breakpoint. Do this before freeing the breakpoint | |
13144 | itself, since remove_breakpoint looks at location's owner. It | |
13145 | might be better design to have location completely | |
13146 | self-contained, but it's not the case now. */ | |
44702360 | 13147 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13148 | |
4a64f543 MS |
13149 | /* On the chance that someone will soon try again to delete this |
13150 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13151 | bpt->type = bp_none; |
4d01a485 | 13152 | delete bpt; |
c906108c SS |
13153 | } |
13154 | ||
51be5b68 PA |
13155 | /* Iterator function to call a user-provided callback function once |
13156 | for each of B and its related breakpoints. */ | |
13157 | ||
13158 | static void | |
13159 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13160 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13161 | { |
13162 | struct breakpoint *related; | |
13163 | ||
13164 | related = b; | |
13165 | do | |
13166 | { | |
13167 | struct breakpoint *next; | |
13168 | ||
13169 | /* FUNCTION may delete RELATED. */ | |
13170 | next = related->related_breakpoint; | |
13171 | ||
13172 | if (next == related) | |
13173 | { | |
13174 | /* RELATED is the last ring entry. */ | |
48649e1b | 13175 | function (related); |
51be5b68 PA |
13176 | |
13177 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13178 | B. There's nothing left to do anyway, so just break | |
13179 | out. */ | |
13180 | break; | |
13181 | } | |
13182 | else | |
48649e1b | 13183 | function (related); |
51be5b68 PA |
13184 | |
13185 | related = next; | |
13186 | } | |
13187 | while (related != b); | |
13188 | } | |
95a42b64 | 13189 | |
4495129a | 13190 | static void |
981a3fb3 | 13191 | delete_command (const char *arg, int from_tty) |
c906108c | 13192 | { |
35df4500 | 13193 | struct breakpoint *b, *b_tmp; |
c906108c | 13194 | |
ea9365bb TT |
13195 | dont_repeat (); |
13196 | ||
c906108c SS |
13197 | if (arg == 0) |
13198 | { | |
13199 | int breaks_to_delete = 0; | |
13200 | ||
46c6471b PA |
13201 | /* Delete all breakpoints if no argument. Do not delete |
13202 | internal breakpoints, these have to be deleted with an | |
13203 | explicit breakpoint number argument. */ | |
c5aa993b | 13204 | ALL_BREAKPOINTS (b) |
46c6471b | 13205 | if (user_breakpoint_p (b)) |
973d738b DJ |
13206 | { |
13207 | breaks_to_delete = 1; | |
13208 | break; | |
13209 | } | |
c906108c SS |
13210 | |
13211 | /* Ask user only if there are some breakpoints to delete. */ | |
13212 | if (!from_tty | |
e2e0b3e5 | 13213 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13214 | { |
35df4500 | 13215 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13216 | if (user_breakpoint_p (b)) |
c5aa993b | 13217 | delete_breakpoint (b); |
c906108c SS |
13218 | } |
13219 | } | |
13220 | else | |
48649e1b | 13221 | map_breakpoint_numbers |
b926417a | 13222 | (arg, [&] (breakpoint *br) |
48649e1b | 13223 | { |
b926417a | 13224 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13225 | }); |
c906108c SS |
13226 | } |
13227 | ||
c2f4122d PA |
13228 | /* Return true if all locations of B bound to PSPACE are pending. If |
13229 | PSPACE is NULL, all locations of all program spaces are | |
13230 | considered. */ | |
13231 | ||
0d381245 | 13232 | static int |
c2f4122d | 13233 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13234 | { |
c2f4122d PA |
13235 | struct bp_location *loc; |
13236 | ||
13237 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13238 | if ((pspace == NULL | |
13239 | || loc->pspace == pspace) | |
13240 | && !loc->shlib_disabled | |
8645ff69 | 13241 | && !loc->pspace->executing_startup) |
0d381245 VP |
13242 | return 0; |
13243 | return 1; | |
fe3f5fa8 VP |
13244 | } |
13245 | ||
776592bf DE |
13246 | /* Subroutine of update_breakpoint_locations to simplify it. |
13247 | Return non-zero if multiple fns in list LOC have the same name. | |
13248 | Null names are ignored. */ | |
13249 | ||
13250 | static int | |
13251 | ambiguous_names_p (struct bp_location *loc) | |
13252 | { | |
13253 | struct bp_location *l; | |
459a2e4c TT |
13254 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13255 | xcalloc, xfree); | |
776592bf DE |
13256 | |
13257 | for (l = loc; l != NULL; l = l->next) | |
13258 | { | |
13259 | const char **slot; | |
13260 | const char *name = l->function_name; | |
13261 | ||
13262 | /* Allow for some names to be NULL, ignore them. */ | |
13263 | if (name == NULL) | |
13264 | continue; | |
13265 | ||
13266 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13267 | INSERT); | |
4a64f543 MS |
13268 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13269 | returns NULL. */ | |
776592bf DE |
13270 | if (*slot != NULL) |
13271 | { | |
13272 | htab_delete (htab); | |
13273 | return 1; | |
13274 | } | |
13275 | *slot = name; | |
13276 | } | |
13277 | ||
13278 | htab_delete (htab); | |
13279 | return 0; | |
13280 | } | |
13281 | ||
0fb4aa4b PA |
13282 | /* When symbols change, it probably means the sources changed as well, |
13283 | and it might mean the static tracepoint markers are no longer at | |
13284 | the same address or line numbers they used to be at last we | |
13285 | checked. Losing your static tracepoints whenever you rebuild is | |
13286 | undesirable. This function tries to resync/rematch gdb static | |
13287 | tracepoints with the markers on the target, for static tracepoints | |
13288 | that have not been set by marker id. Static tracepoint that have | |
13289 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13290 | The heuristic is: | |
13291 | ||
13292 | 1) For a tracepoint set at a specific address, look for a marker at | |
13293 | the old PC. If one is found there, assume to be the same marker. | |
13294 | If the name / string id of the marker found is different from the | |
13295 | previous known name, assume that means the user renamed the marker | |
13296 | in the sources, and output a warning. | |
13297 | ||
13298 | 2) For a tracepoint set at a given line number, look for a marker | |
13299 | at the new address of the old line number. If one is found there, | |
13300 | assume to be the same marker. If the name / string id of the | |
13301 | marker found is different from the previous known name, assume that | |
13302 | means the user renamed the marker in the sources, and output a | |
13303 | warning. | |
13304 | ||
13305 | 3) If a marker is no longer found at the same address or line, it | |
13306 | may mean the marker no longer exists. But it may also just mean | |
13307 | the code changed a bit. Maybe the user added a few lines of code | |
13308 | that made the marker move up or down (in line number terms). Ask | |
13309 | the target for info about the marker with the string id as we knew | |
13310 | it. If found, update line number and address in the matching | |
13311 | static tracepoint. This will get confused if there's more than one | |
13312 | marker with the same ID (possible in UST, although unadvised | |
13313 | precisely because it confuses tools). */ | |
13314 | ||
13315 | static struct symtab_and_line | |
13316 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13317 | { | |
d9b3f62e | 13318 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13319 | struct static_tracepoint_marker marker; |
13320 | CORE_ADDR pc; | |
0fb4aa4b PA |
13321 | |
13322 | pc = sal.pc; | |
13323 | if (sal.line) | |
13324 | find_line_pc (sal.symtab, sal.line, &pc); | |
13325 | ||
13326 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13327 | { | |
5d9310c4 | 13328 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13329 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13330 | b->number, tp->static_trace_marker_id.c_str (), |
13331 | marker.str_id.c_str ()); | |
0fb4aa4b | 13332 | |
5d9310c4 | 13333 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13334 | |
13335 | return sal; | |
13336 | } | |
13337 | ||
13338 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13339 | by string ID. */ | |
13340 | if (!sal.explicit_pc | |
13341 | && sal.line != 0 | |
13342 | && sal.symtab != NULL | |
5d9310c4 | 13343 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13344 | { |
5d9310c4 SM |
13345 | std::vector<static_tracepoint_marker> markers |
13346 | = target_static_tracepoint_markers_by_strid | |
13347 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13348 | |
5d9310c4 | 13349 | if (!markers.empty ()) |
0fb4aa4b | 13350 | { |
0fb4aa4b | 13351 | struct symbol *sym; |
80e1d417 | 13352 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13353 | struct ui_out *uiout = current_uiout; |
67994074 | 13354 | struct explicit_location explicit_loc; |
0fb4aa4b | 13355 | |
5d9310c4 | 13356 | tpmarker = &markers[0]; |
0fb4aa4b | 13357 | |
5d9310c4 | 13358 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13359 | |
13360 | warning (_("marker for static tracepoint %d (%s) not " | |
13361 | "found at previous line number"), | |
5d9310c4 | 13362 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13363 | |
51abb421 | 13364 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13365 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13366 | uiout->text ("Now in "); |
0fb4aa4b PA |
13367 | if (sym) |
13368 | { | |
cbe56571 TT |
13369 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
13370 | ui_out_style_kind::FUNCTION); | |
112e8700 | 13371 | uiout->text (" at "); |
0fb4aa4b | 13372 | } |
112e8700 | 13373 | uiout->field_string ("file", |
cbe56571 TT |
13374 | symtab_to_filename_for_display (sal2.symtab), |
13375 | ui_out_style_kind::FILE); | |
112e8700 | 13376 | uiout->text (":"); |
0fb4aa4b | 13377 | |
112e8700 | 13378 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13379 | { |
0b0865da | 13380 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13381 | |
112e8700 | 13382 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13383 | } |
13384 | ||
112e8700 SM |
13385 | uiout->field_int ("line", sal2.line); |
13386 | uiout->text ("\n"); | |
0fb4aa4b | 13387 | |
80e1d417 | 13388 | b->loc->line_number = sal2.line; |
2f202fde | 13389 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13390 | |
d28cd78a | 13391 | b->location.reset (NULL); |
67994074 KS |
13392 | initialize_explicit_location (&explicit_loc); |
13393 | explicit_loc.source_filename | |
00e52e53 | 13394 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13395 | explicit_loc.line_offset.offset = b->loc->line_number; |
13396 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13397 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13398 | |
13399 | /* Might be nice to check if function changed, and warn if | |
13400 | so. */ | |
0fb4aa4b PA |
13401 | } |
13402 | } | |
13403 | return sal; | |
13404 | } | |
13405 | ||
8d3788bd VP |
13406 | /* Returns 1 iff locations A and B are sufficiently same that |
13407 | we don't need to report breakpoint as changed. */ | |
13408 | ||
13409 | static int | |
13410 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13411 | { | |
13412 | while (a && b) | |
13413 | { | |
13414 | if (a->address != b->address) | |
13415 | return 0; | |
13416 | ||
13417 | if (a->shlib_disabled != b->shlib_disabled) | |
13418 | return 0; | |
13419 | ||
13420 | if (a->enabled != b->enabled) | |
13421 | return 0; | |
13422 | ||
13423 | a = a->next; | |
13424 | b = b->next; | |
13425 | } | |
13426 | ||
13427 | if ((a == NULL) != (b == NULL)) | |
13428 | return 0; | |
13429 | ||
13430 | return 1; | |
13431 | } | |
13432 | ||
c2f4122d PA |
13433 | /* Split all locations of B that are bound to PSPACE out of B's |
13434 | location list to a separate list and return that list's head. If | |
13435 | PSPACE is NULL, hoist out all locations of B. */ | |
13436 | ||
13437 | static struct bp_location * | |
13438 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13439 | { | |
13440 | struct bp_location head; | |
13441 | struct bp_location *i = b->loc; | |
13442 | struct bp_location **i_link = &b->loc; | |
13443 | struct bp_location *hoisted = &head; | |
13444 | ||
13445 | if (pspace == NULL) | |
13446 | { | |
13447 | i = b->loc; | |
13448 | b->loc = NULL; | |
13449 | return i; | |
13450 | } | |
13451 | ||
13452 | head.next = NULL; | |
13453 | ||
13454 | while (i != NULL) | |
13455 | { | |
13456 | if (i->pspace == pspace) | |
13457 | { | |
13458 | *i_link = i->next; | |
13459 | i->next = NULL; | |
13460 | hoisted->next = i; | |
13461 | hoisted = i; | |
13462 | } | |
13463 | else | |
13464 | i_link = &i->next; | |
13465 | i = *i_link; | |
13466 | } | |
13467 | ||
13468 | return head.next; | |
13469 | } | |
13470 | ||
13471 | /* Create new breakpoint locations for B (a hardware or software | |
13472 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13473 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13474 | FILTER_PSPACE. Locations of other program spaces are left | |
13475 | untouched. */ | |
f1310107 | 13476 | |
0e30163f | 13477 | void |
0d381245 | 13478 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13479 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13480 | gdb::array_view<const symtab_and_line> sals, |
13481 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13482 | { |
c2f4122d | 13483 | struct bp_location *existing_locations; |
0d381245 | 13484 | |
6c5b2ebe | 13485 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13486 | { |
13487 | /* Ranged breakpoints have only one start location and one end | |
13488 | location. */ | |
13489 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13490 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13491 | "multiple locations found\n"), | |
13492 | b->number); | |
13493 | return; | |
13494 | } | |
f1310107 | 13495 | |
4a64f543 MS |
13496 | /* If there's no new locations, and all existing locations are |
13497 | pending, don't do anything. This optimizes the common case where | |
13498 | all locations are in the same shared library, that was unloaded. | |
13499 | We'd like to retain the location, so that when the library is | |
13500 | loaded again, we don't loose the enabled/disabled status of the | |
13501 | individual locations. */ | |
6c5b2ebe | 13502 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13503 | return; |
13504 | ||
c2f4122d | 13505 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13506 | |
6c5b2ebe | 13507 | for (const auto &sal : sals) |
fe3f5fa8 | 13508 | { |
f8eba3c6 TT |
13509 | struct bp_location *new_loc; |
13510 | ||
6c5b2ebe | 13511 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13512 | |
6c5b2ebe | 13513 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13514 | |
0d381245 VP |
13515 | /* Reparse conditions, they might contain references to the |
13516 | old symtab. */ | |
13517 | if (b->cond_string != NULL) | |
13518 | { | |
bbc13ae3 | 13519 | const char *s; |
fe3f5fa8 | 13520 | |
0d381245 | 13521 | s = b->cond_string; |
492d29ea | 13522 | TRY |
0d381245 | 13523 | { |
6c5b2ebe PA |
13524 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13525 | block_for_pc (sal.pc), | |
0d381245 VP |
13526 | 0); |
13527 | } | |
492d29ea | 13528 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13529 | { |
3e43a32a MS |
13530 | warning (_("failed to reevaluate condition " |
13531 | "for breakpoint %d: %s"), | |
0d381245 VP |
13532 | b->number, e.message); |
13533 | new_loc->enabled = 0; | |
13534 | } | |
492d29ea | 13535 | END_CATCH |
0d381245 | 13536 | } |
fe3f5fa8 | 13537 | |
6c5b2ebe | 13538 | if (!sals_end.empty ()) |
f1310107 | 13539 | { |
6c5b2ebe | 13540 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13541 | |
6c5b2ebe | 13542 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13543 | } |
0d381245 | 13544 | } |
fe3f5fa8 | 13545 | |
4a64f543 MS |
13546 | /* If possible, carry over 'disable' status from existing |
13547 | breakpoints. */ | |
0d381245 VP |
13548 | { |
13549 | struct bp_location *e = existing_locations; | |
776592bf DE |
13550 | /* If there are multiple breakpoints with the same function name, |
13551 | e.g. for inline functions, comparing function names won't work. | |
13552 | Instead compare pc addresses; this is just a heuristic as things | |
13553 | may have moved, but in practice it gives the correct answer | |
13554 | often enough until a better solution is found. */ | |
13555 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13556 | ||
0d381245 VP |
13557 | for (; e; e = e->next) |
13558 | { | |
13559 | if (!e->enabled && e->function_name) | |
13560 | { | |
13561 | struct bp_location *l = b->loc; | |
776592bf DE |
13562 | if (have_ambiguous_names) |
13563 | { | |
13564 | for (; l; l = l->next) | |
f1310107 | 13565 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13566 | { |
13567 | l->enabled = 0; | |
13568 | break; | |
13569 | } | |
13570 | } | |
13571 | else | |
13572 | { | |
13573 | for (; l; l = l->next) | |
13574 | if (l->function_name | |
13575 | && strcmp (e->function_name, l->function_name) == 0) | |
13576 | { | |
13577 | l->enabled = 0; | |
13578 | break; | |
13579 | } | |
13580 | } | |
0d381245 VP |
13581 | } |
13582 | } | |
13583 | } | |
fe3f5fa8 | 13584 | |
8d3788bd | 13585 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13586 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13587 | } |
13588 | ||
f00aae0f | 13589 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13590 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13591 | ||
6c5b2ebe | 13592 | static std::vector<symtab_and_line> |
f00aae0f | 13593 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13594 | struct program_space *search_pspace, int *found) |
ef23e705 | 13595 | { |
492d29ea | 13596 | struct gdb_exception exception = exception_none; |
ef23e705 | 13597 | |
983af33b | 13598 | gdb_assert (b->ops != NULL); |
ef23e705 | 13599 | |
6c5b2ebe PA |
13600 | std::vector<symtab_and_line> sals; |
13601 | ||
492d29ea | 13602 | TRY |
ef23e705 | 13603 | { |
6c5b2ebe | 13604 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13605 | } |
492d29ea | 13606 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13607 | { |
13608 | int not_found_and_ok = 0; | |
492d29ea PA |
13609 | |
13610 | exception = e; | |
13611 | ||
ef23e705 TJB |
13612 | /* For pending breakpoints, it's expected that parsing will |
13613 | fail until the right shared library is loaded. User has | |
13614 | already told to create pending breakpoints and don't need | |
13615 | extra messages. If breakpoint is in bp_shlib_disabled | |
13616 | state, then user already saw the message about that | |
13617 | breakpoint being disabled, and don't want to see more | |
13618 | errors. */ | |
58438ac1 | 13619 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13620 | && (b->condition_not_parsed |
13621 | || (b->loc != NULL | |
13622 | && search_pspace != NULL | |
13623 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13624 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13625 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13626 | || b->enable_state == bp_disabled)) |
13627 | not_found_and_ok = 1; | |
13628 | ||
13629 | if (!not_found_and_ok) | |
13630 | { | |
13631 | /* We surely don't want to warn about the same breakpoint | |
13632 | 10 times. One solution, implemented here, is disable | |
13633 | the breakpoint on error. Another solution would be to | |
13634 | have separate 'warning emitted' flag. Since this | |
13635 | happens only when a binary has changed, I don't know | |
13636 | which approach is better. */ | |
13637 | b->enable_state = bp_disabled; | |
13638 | throw_exception (e); | |
13639 | } | |
13640 | } | |
492d29ea | 13641 | END_CATCH |
ef23e705 | 13642 | |
492d29ea | 13643 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13644 | { |
6c5b2ebe PA |
13645 | for (auto &sal : sals) |
13646 | resolve_sal_pc (&sal); | |
f00aae0f | 13647 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13648 | { |
ed1d1739 KS |
13649 | char *cond_string, *extra_string; |
13650 | int thread, task; | |
ef23e705 | 13651 | |
6c5b2ebe | 13652 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13653 | &cond_string, &thread, &task, |
13654 | &extra_string); | |
f00aae0f | 13655 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13656 | if (cond_string) |
13657 | b->cond_string = cond_string; | |
13658 | b->thread = thread; | |
13659 | b->task = task; | |
e7e0cddf | 13660 | if (extra_string) |
f00aae0f KS |
13661 | { |
13662 | xfree (b->extra_string); | |
13663 | b->extra_string = extra_string; | |
13664 | } | |
ef23e705 TJB |
13665 | b->condition_not_parsed = 0; |
13666 | } | |
13667 | ||
983af33b | 13668 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13669 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13670 | |
58438ac1 TT |
13671 | *found = 1; |
13672 | } | |
13673 | else | |
13674 | *found = 0; | |
ef23e705 TJB |
13675 | |
13676 | return sals; | |
13677 | } | |
13678 | ||
348d480f PA |
13679 | /* The default re_set method, for typical hardware or software |
13680 | breakpoints. Reevaluate the breakpoint and recreate its | |
13681 | locations. */ | |
13682 | ||
13683 | static void | |
28010a5d | 13684 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13685 | { |
c2f4122d | 13686 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13687 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13688 | |
6c5b2ebe PA |
13689 | int found; |
13690 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13691 | filter_pspace, &found); | |
ef23e705 | 13692 | if (found) |
6c5b2ebe | 13693 | expanded = std::move (sals); |
ef23e705 | 13694 | |
f00aae0f | 13695 | if (b->location_range_end != NULL) |
f1310107 | 13696 | { |
6c5b2ebe PA |
13697 | std::vector<symtab_and_line> sals_end |
13698 | = location_to_sals (b, b->location_range_end.get (), | |
13699 | filter_pspace, &found); | |
f1310107 | 13700 | if (found) |
6c5b2ebe | 13701 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13702 | } |
13703 | ||
c2f4122d | 13704 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13705 | } |
13706 | ||
983af33b SDJ |
13707 | /* Default method for creating SALs from an address string. It basically |
13708 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13709 | ||
13710 | static void | |
f00aae0f KS |
13711 | create_sals_from_location_default (const struct event_location *location, |
13712 | struct linespec_result *canonical, | |
13713 | enum bptype type_wanted) | |
983af33b | 13714 | { |
f00aae0f | 13715 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13716 | } |
13717 | ||
13718 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13719 | function for the `create_breakpoints_sal' method of | |
13720 | breakpoint_ops. */ | |
13721 | ||
13722 | static void | |
13723 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13724 | struct linespec_result *canonical, | |
e1e01040 PA |
13725 | gdb::unique_xmalloc_ptr<char> cond_string, |
13726 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13727 | enum bptype type_wanted, |
13728 | enum bpdisp disposition, | |
13729 | int thread, | |
13730 | int task, int ignore_count, | |
13731 | const struct breakpoint_ops *ops, | |
13732 | int from_tty, int enabled, | |
44f238bb | 13733 | int internal, unsigned flags) |
983af33b | 13734 | { |
e1e01040 PA |
13735 | create_breakpoints_sal (gdbarch, canonical, |
13736 | std::move (cond_string), | |
13737 | std::move (extra_string), | |
983af33b SDJ |
13738 | type_wanted, disposition, |
13739 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13740 | enabled, internal, flags); |
983af33b SDJ |
13741 | } |
13742 | ||
13743 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13744 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13745 | |
6c5b2ebe | 13746 | static std::vector<symtab_and_line> |
f00aae0f KS |
13747 | decode_location_default (struct breakpoint *b, |
13748 | const struct event_location *location, | |
6c5b2ebe | 13749 | struct program_space *search_pspace) |
983af33b SDJ |
13750 | { |
13751 | struct linespec_result canonical; | |
13752 | ||
c2f4122d | 13753 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13754 | (struct symtab *) NULL, 0, |
13755 | &canonical, multiple_symbols_all, | |
13756 | b->filter); | |
13757 | ||
13758 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13759 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13760 | |
6c5b2ebe | 13761 | if (!canonical.lsals.empty ()) |
983af33b | 13762 | { |
6c5b2ebe PA |
13763 | const linespec_sals &lsal = canonical.lsals[0]; |
13764 | return std::move (lsal.sals); | |
983af33b | 13765 | } |
6c5b2ebe | 13766 | return {}; |
983af33b SDJ |
13767 | } |
13768 | ||
bf469271 | 13769 | /* Reset a breakpoint. */ |
c906108c | 13770 | |
bf469271 PA |
13771 | static void |
13772 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13773 | { |
fdf44873 TT |
13774 | input_radix = b->input_radix; |
13775 | set_language (b->language); | |
c906108c | 13776 | |
348d480f | 13777 | b->ops->re_set (b); |
c906108c SS |
13778 | } |
13779 | ||
c2f4122d PA |
13780 | /* Re-set breakpoint locations for the current program space. |
13781 | Locations bound to other program spaces are left untouched. */ | |
13782 | ||
c906108c | 13783 | void |
69de3c6a | 13784 | breakpoint_re_set (void) |
c906108c | 13785 | { |
35df4500 | 13786 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13787 | |
c5aa993b | 13788 | { |
fdf44873 TT |
13789 | scoped_restore_current_language save_language; |
13790 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13791 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13792 | |
8e817061 JB |
13793 | /* breakpoint_re_set_one sets the current_language to the language |
13794 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13795 | before re-evaluating the breakpoint's location. This change can | |
13796 | unfortunately get undone by accident if the language_mode is set | |
13797 | to auto, and we either switch frames, or more likely in this context, | |
13798 | we select the current frame. | |
13799 | ||
13800 | We prevent this by temporarily turning the language_mode to | |
13801 | language_mode_manual. We restore it once all breakpoints | |
13802 | have been reset. */ | |
13803 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13804 | language_mode = language_mode_manual; | |
13805 | ||
5ed8105e PA |
13806 | /* Note: we must not try to insert locations until after all |
13807 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13808 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13809 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13810 | |
5ed8105e PA |
13811 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13812 | { | |
bf469271 PA |
13813 | TRY |
13814 | { | |
13815 | breakpoint_re_set_one (b); | |
13816 | } | |
13817 | CATCH (ex, RETURN_MASK_ALL) | |
13818 | { | |
13819 | exception_fprintf (gdb_stderr, ex, | |
13820 | "Error in re-setting breakpoint %d: ", | |
13821 | b->number); | |
13822 | } | |
13823 | END_CATCH | |
5ed8105e | 13824 | } |
5ed8105e PA |
13825 | |
13826 | jit_breakpoint_re_set (); | |
13827 | } | |
6c95b8df | 13828 | |
af02033e PP |
13829 | create_overlay_event_breakpoint (); |
13830 | create_longjmp_master_breakpoint (); | |
13831 | create_std_terminate_master_breakpoint (); | |
186c406b | 13832 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13833 | |
13834 | /* Now we can insert. */ | |
13835 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13836 | } |
13837 | \f | |
c906108c SS |
13838 | /* Reset the thread number of this breakpoint: |
13839 | ||
13840 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13841 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13842 | void |
fba45db2 | 13843 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13844 | { |
13845 | if (b->thread != -1) | |
13846 | { | |
00431a78 | 13847 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13848 | |
13849 | /* We're being called after following a fork. The new fork is | |
13850 | selected as current, and unless this was a vfork will have a | |
13851 | different program space from the original thread. Reset that | |
13852 | as well. */ | |
13853 | b->loc->pspace = current_program_space; | |
c906108c SS |
13854 | } |
13855 | } | |
13856 | ||
03ac34d5 MS |
13857 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13858 | If from_tty is nonzero, it prints a message to that effect, | |
13859 | which ends with a period (no newline). */ | |
13860 | ||
c906108c | 13861 | void |
fba45db2 | 13862 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13863 | { |
52f0bd74 | 13864 | struct breakpoint *b; |
c906108c SS |
13865 | |
13866 | if (count < 0) | |
13867 | count = 0; | |
13868 | ||
13869 | ALL_BREAKPOINTS (b) | |
13870 | if (b->number == bptnum) | |
c5aa993b | 13871 | { |
d77f58be SS |
13872 | if (is_tracepoint (b)) |
13873 | { | |
13874 | if (from_tty && count != 0) | |
13875 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13876 | bptnum); | |
13877 | return; | |
13878 | } | |
13879 | ||
c5aa993b | 13880 | b->ignore_count = count; |
221ea385 KS |
13881 | if (from_tty) |
13882 | { | |
13883 | if (count == 0) | |
3e43a32a MS |
13884 | printf_filtered (_("Will stop next time " |
13885 | "breakpoint %d is reached."), | |
221ea385 KS |
13886 | bptnum); |
13887 | else if (count == 1) | |
a3f17187 | 13888 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13889 | bptnum); |
13890 | else | |
3e43a32a MS |
13891 | printf_filtered (_("Will ignore next %d " |
13892 | "crossings of breakpoint %d."), | |
221ea385 KS |
13893 | count, bptnum); |
13894 | } | |
76727919 | 13895 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13896 | return; |
13897 | } | |
c906108c | 13898 | |
8a3fe4f8 | 13899 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13900 | } |
13901 | ||
c906108c SS |
13902 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13903 | ||
13904 | static void | |
0b39b52e | 13905 | ignore_command (const char *args, int from_tty) |
c906108c | 13906 | { |
0b39b52e | 13907 | const char *p = args; |
52f0bd74 | 13908 | int num; |
c906108c SS |
13909 | |
13910 | if (p == 0) | |
e2e0b3e5 | 13911 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13912 | |
c906108c | 13913 | num = get_number (&p); |
5c44784c | 13914 | if (num == 0) |
8a3fe4f8 | 13915 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13916 | if (*p == 0) |
8a3fe4f8 | 13917 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13918 | |
13919 | set_ignore_count (num, | |
13920 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13921 | from_tty); | |
221ea385 KS |
13922 | if (from_tty) |
13923 | printf_filtered ("\n"); | |
c906108c SS |
13924 | } |
13925 | \f | |
d0fe4701 XR |
13926 | |
13927 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13928 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13929 | |
13930 | static void | |
d0fe4701 XR |
13931 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13932 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13933 | { |
d0fe4701 XR |
13934 | if (bp_num_range.first == 0) |
13935 | { | |
13936 | warning (_("bad breakpoint number at or near '%d'"), | |
13937 | bp_num_range.first); | |
13938 | } | |
13939 | else | |
c906108c | 13940 | { |
d0fe4701 | 13941 | struct breakpoint *b, *tmp; |
197f0a60 | 13942 | |
d0fe4701 | 13943 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13944 | { |
d0fe4701 XR |
13945 | bool match = false; |
13946 | ||
5c44784c | 13947 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13948 | if (b->number == i) |
5c44784c | 13949 | { |
bfd28288 | 13950 | match = true; |
48649e1b | 13951 | function (b); |
11cf8741 | 13952 | break; |
5c44784c | 13953 | } |
bfd28288 | 13954 | if (!match) |
d0fe4701 | 13955 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13956 | } |
c906108c SS |
13957 | } |
13958 | } | |
13959 | ||
d0fe4701 XR |
13960 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13961 | ARGS. */ | |
13962 | ||
13963 | static void | |
13964 | map_breakpoint_numbers (const char *args, | |
13965 | gdb::function_view<void (breakpoint *)> function) | |
13966 | { | |
13967 | if (args == NULL || *args == '\0') | |
13968 | error_no_arg (_("one or more breakpoint numbers")); | |
13969 | ||
13970 | number_or_range_parser parser (args); | |
13971 | ||
13972 | while (!parser.finished ()) | |
13973 | { | |
13974 | int num = parser.get_number (); | |
13975 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13976 | } | |
13977 | } | |
13978 | ||
13979 | /* Return the breakpoint location structure corresponding to the | |
13980 | BP_NUM and LOC_NUM values. */ | |
13981 | ||
0d381245 | 13982 | static struct bp_location * |
d0fe4701 | 13983 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13984 | { |
0d381245 | 13985 | struct breakpoint *b; |
0d381245 VP |
13986 | |
13987 | ALL_BREAKPOINTS (b) | |
13988 | if (b->number == bp_num) | |
13989 | { | |
13990 | break; | |
13991 | } | |
13992 | ||
13993 | if (!b || b->number != bp_num) | |
d0fe4701 | 13994 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13995 | |
0d381245 | 13996 | if (loc_num == 0) |
d0fe4701 | 13997 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13998 | |
d0fe4701 XR |
13999 | int n = 0; |
14000 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14001 | if (++n == loc_num) | |
14002 | return loc; | |
14003 | ||
14004 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14005 | } |
14006 | ||
95e95a6d PA |
14007 | /* Modes of operation for extract_bp_num. */ |
14008 | enum class extract_bp_kind | |
14009 | { | |
14010 | /* Extracting a breakpoint number. */ | |
14011 | bp, | |
14012 | ||
14013 | /* Extracting a location number. */ | |
14014 | loc, | |
14015 | }; | |
14016 | ||
14017 | /* Extract a breakpoint or location number (as determined by KIND) | |
14018 | from the string starting at START. TRAILER is a character which | |
14019 | can be found after the number. If you don't want a trailer, use | |
14020 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14021 | string. This always returns a positive integer. */ | |
14022 | ||
14023 | static int | |
14024 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14025 | int trailer, const char **end_out = NULL) | |
14026 | { | |
14027 | const char *end = start; | |
14028 | int num = get_number_trailer (&end, trailer); | |
14029 | if (num < 0) | |
14030 | error (kind == extract_bp_kind::bp | |
14031 | ? _("Negative breakpoint number '%.*s'") | |
14032 | : _("Negative breakpoint location number '%.*s'"), | |
14033 | int (end - start), start); | |
14034 | if (num == 0) | |
14035 | error (kind == extract_bp_kind::bp | |
14036 | ? _("Bad breakpoint number '%.*s'") | |
14037 | : _("Bad breakpoint location number '%.*s'"), | |
14038 | int (end - start), start); | |
14039 | ||
14040 | if (end_out != NULL) | |
14041 | *end_out = end; | |
14042 | return num; | |
14043 | } | |
14044 | ||
14045 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14046 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14047 | representing the (inclusive) range. The returned pair's elements | |
14048 | are always positive integers. */ | |
14049 | ||
14050 | static std::pair<int, int> | |
14051 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14052 | const std::string &arg, | |
14053 | std::string::size_type arg_offset) | |
14054 | { | |
14055 | std::pair<int, int> range; | |
14056 | const char *bp_loc = &arg[arg_offset]; | |
14057 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14058 | if (dash != std::string::npos) | |
14059 | { | |
14060 | /* bp_loc is a range (x-z). */ | |
14061 | if (arg.length () == dash + 1) | |
14062 | error (kind == extract_bp_kind::bp | |
14063 | ? _("Bad breakpoint number at or near: '%s'") | |
14064 | : _("Bad breakpoint location number at or near: '%s'"), | |
14065 | bp_loc); | |
14066 | ||
14067 | const char *end; | |
14068 | const char *start_first = bp_loc; | |
14069 | const char *start_second = &arg[dash + 1]; | |
14070 | range.first = extract_bp_num (kind, start_first, '-'); | |
14071 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14072 | ||
14073 | if (range.first > range.second) | |
14074 | error (kind == extract_bp_kind::bp | |
14075 | ? _("Inverted breakpoint range at '%.*s'") | |
14076 | : _("Inverted breakpoint location range at '%.*s'"), | |
14077 | int (end - start_first), start_first); | |
14078 | } | |
14079 | else | |
14080 | { | |
14081 | /* bp_loc is a single value. */ | |
14082 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14083 | range.second = range.first; | |
14084 | } | |
14085 | return range; | |
14086 | } | |
14087 | ||
d0fe4701 XR |
14088 | /* Extract the breakpoint/location range specified by ARG. Returns |
14089 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14090 | BP_LOC_RANGE. | |
14091 | ||
14092 | ARG may be in any of the following forms: | |
14093 | ||
14094 | x where 'x' is a breakpoint number. | |
14095 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14096 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14097 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14098 | location number range. | |
14099 | */ | |
14100 | ||
cc638e86 | 14101 | static void |
d0fe4701 XR |
14102 | extract_bp_number_and_location (const std::string &arg, |
14103 | std::pair<int, int> &bp_num_range, | |
14104 | std::pair<int, int> &bp_loc_range) | |
14105 | { | |
14106 | std::string::size_type dot = arg.find ('.'); | |
14107 | ||
14108 | if (dot != std::string::npos) | |
14109 | { | |
14110 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14111 | ||
14112 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14113 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14114 | |
95e95a6d PA |
14115 | bp_num_range.first |
14116 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14117 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14118 | |
95e95a6d PA |
14119 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14120 | arg, dot + 1); | |
d0fe4701 XR |
14121 | } |
14122 | else | |
14123 | { | |
14124 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14125 | |
95e95a6d | 14126 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14127 | bp_loc_range.first = 0; |
14128 | bp_loc_range.second = 0; | |
14129 | } | |
d0fe4701 XR |
14130 | } |
14131 | ||
14132 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14133 | specifies whether to enable or disable. */ | |
14134 | ||
14135 | static void | |
14136 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14137 | { | |
14138 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14139 | if (loc != NULL) | |
14140 | { | |
14141 | if (loc->enabled != enable) | |
14142 | { | |
14143 | loc->enabled = enable; | |
14144 | mark_breakpoint_location_modified (loc); | |
14145 | } | |
14146 | if (target_supports_enable_disable_tracepoint () | |
14147 | && current_trace_status ()->running && loc->owner | |
14148 | && is_tracepoint (loc->owner)) | |
14149 | target_disable_tracepoint (loc); | |
14150 | } | |
14151 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14152 | |
14153 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14154 | } |
14155 | ||
14156 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14157 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14158 | (inclusive) range of location numbers of that breakpoint to | |
14159 | enable/disable. ENABLE specifies whether to enable or disable the | |
14160 | location. */ | |
14161 | ||
14162 | static void | |
14163 | enable_disable_breakpoint_location_range (int bp_num, | |
14164 | std::pair<int, int> &bp_loc_range, | |
14165 | bool enable) | |
14166 | { | |
14167 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14168 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14169 | } | |
0d381245 | 14170 | |
1900040c MS |
14171 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14172 | If from_tty is nonzero, it prints a message to that effect, | |
14173 | which ends with a period (no newline). */ | |
14174 | ||
c906108c | 14175 | void |
fba45db2 | 14176 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14177 | { |
14178 | /* Never disable a watchpoint scope breakpoint; we want to | |
14179 | hit them when we leave scope so we can delete both the | |
14180 | watchpoint and its scope breakpoint at that time. */ | |
14181 | if (bpt->type == bp_watchpoint_scope) | |
14182 | return; | |
14183 | ||
b5de0fa7 | 14184 | bpt->enable_state = bp_disabled; |
c906108c | 14185 | |
b775012e LM |
14186 | /* Mark breakpoint locations modified. */ |
14187 | mark_breakpoint_modified (bpt); | |
14188 | ||
d248b706 KY |
14189 | if (target_supports_enable_disable_tracepoint () |
14190 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14191 | { | |
14192 | struct bp_location *location; | |
14193 | ||
14194 | for (location = bpt->loc; location; location = location->next) | |
14195 | target_disable_tracepoint (location); | |
14196 | } | |
14197 | ||
44702360 | 14198 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14199 | |
76727919 | 14200 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14201 | } |
14202 | ||
d0fe4701 XR |
14203 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14204 | specified in ARGS. ARGS may be in any of the formats handled by | |
14205 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14206 | or disable the breakpoints/locations. */ | |
14207 | ||
c906108c | 14208 | static void |
d0fe4701 | 14209 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14210 | { |
c906108c | 14211 | if (args == 0) |
46c6471b PA |
14212 | { |
14213 | struct breakpoint *bpt; | |
14214 | ||
14215 | ALL_BREAKPOINTS (bpt) | |
14216 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14217 | { |
14218 | if (enable) | |
14219 | enable_breakpoint (bpt); | |
14220 | else | |
14221 | disable_breakpoint (bpt); | |
14222 | } | |
46c6471b | 14223 | } |
9eaabc75 | 14224 | else |
0d381245 | 14225 | { |
cb791d59 | 14226 | std::string num = extract_arg (&args); |
9eaabc75 | 14227 | |
cb791d59 | 14228 | while (!num.empty ()) |
d248b706 | 14229 | { |
d0fe4701 | 14230 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14231 | |
cc638e86 PA |
14232 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14233 | ||
14234 | if (bp_loc_range.first == bp_loc_range.second | |
14235 | && bp_loc_range.first == 0) | |
d0fe4701 | 14236 | { |
cc638e86 PA |
14237 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14238 | map_breakpoint_number_range (bp_num_range, | |
14239 | enable | |
14240 | ? enable_breakpoint | |
14241 | : disable_breakpoint); | |
14242 | } | |
14243 | else | |
14244 | { | |
14245 | /* Handle breakpoint ids with formats 'x.y' or | |
14246 | 'x.y-z'. */ | |
14247 | enable_disable_breakpoint_location_range | |
14248 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14249 | } |
9eaabc75 | 14250 | num = extract_arg (&args); |
d248b706 | 14251 | } |
0d381245 | 14252 | } |
c906108c SS |
14253 | } |
14254 | ||
d0fe4701 XR |
14255 | /* The disable command disables the specified breakpoints/locations |
14256 | (or all defined breakpoints) so they're no longer effective in | |
14257 | stopping the inferior. ARGS may be in any of the forms defined in | |
14258 | extract_bp_number_and_location. */ | |
14259 | ||
14260 | static void | |
14261 | disable_command (const char *args, int from_tty) | |
14262 | { | |
14263 | enable_disable_command (args, from_tty, false); | |
14264 | } | |
14265 | ||
c906108c | 14266 | static void |
816338b5 SS |
14267 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14268 | int count) | |
c906108c | 14269 | { |
afe38095 | 14270 | int target_resources_ok; |
c906108c SS |
14271 | |
14272 | if (bpt->type == bp_hardware_breakpoint) | |
14273 | { | |
14274 | int i; | |
c5aa993b | 14275 | i = hw_breakpoint_used_count (); |
53a5351d | 14276 | target_resources_ok = |
d92524f1 | 14277 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14278 | i + 1, 0); |
c906108c | 14279 | if (target_resources_ok == 0) |
8a3fe4f8 | 14280 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14281 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14282 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14283 | } |
14284 | ||
cc60f2e3 | 14285 | if (is_watchpoint (bpt)) |
c906108c | 14286 | { |
d07205c2 | 14287 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14288 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14289 | |
492d29ea | 14290 | TRY |
c906108c | 14291 | { |
3a5c3e22 PA |
14292 | struct watchpoint *w = (struct watchpoint *) bpt; |
14293 | ||
1e718ff1 TJB |
14294 | orig_enable_state = bpt->enable_state; |
14295 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14296 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14297 | } |
492d29ea | 14298 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14299 | { |
1e718ff1 | 14300 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14301 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14302 | bpt->number); | |
14303 | return; | |
c5aa993b | 14304 | } |
492d29ea | 14305 | END_CATCH |
c906108c | 14306 | } |
0101ce28 | 14307 | |
b775012e LM |
14308 | bpt->enable_state = bp_enabled; |
14309 | ||
14310 | /* Mark breakpoint locations modified. */ | |
14311 | mark_breakpoint_modified (bpt); | |
14312 | ||
d248b706 KY |
14313 | if (target_supports_enable_disable_tracepoint () |
14314 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14315 | { | |
14316 | struct bp_location *location; | |
14317 | ||
14318 | for (location = bpt->loc; location; location = location->next) | |
14319 | target_enable_tracepoint (location); | |
14320 | } | |
14321 | ||
b4c291bb | 14322 | bpt->disposition = disposition; |
816338b5 | 14323 | bpt->enable_count = count; |
44702360 | 14324 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14325 | |
76727919 | 14326 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14327 | } |
14328 | ||
fe3f5fa8 | 14329 | |
c906108c | 14330 | void |
fba45db2 | 14331 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14332 | { |
816338b5 | 14333 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14334 | } |
14335 | ||
d0fe4701 XR |
14336 | /* The enable command enables the specified breakpoints/locations (or |
14337 | all defined breakpoints) so they once again become (or continue to | |
14338 | be) effective in stopping the inferior. ARGS may be in any of the | |
14339 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14340 | |
c906108c | 14341 | static void |
981a3fb3 | 14342 | enable_command (const char *args, int from_tty) |
c906108c | 14343 | { |
d0fe4701 | 14344 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14345 | } |
14346 | ||
c906108c | 14347 | static void |
4495129a | 14348 | enable_once_command (const char *args, int from_tty) |
c906108c | 14349 | { |
48649e1b TT |
14350 | map_breakpoint_numbers |
14351 | (args, [&] (breakpoint *b) | |
14352 | { | |
14353 | iterate_over_related_breakpoints | |
14354 | (b, [&] (breakpoint *bpt) | |
14355 | { | |
14356 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14357 | }); | |
14358 | }); | |
816338b5 SS |
14359 | } |
14360 | ||
14361 | static void | |
4495129a | 14362 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14363 | { |
b9d61307 SM |
14364 | int count; |
14365 | ||
14366 | if (args == NULL) | |
14367 | error_no_arg (_("hit count")); | |
14368 | ||
14369 | count = get_number (&args); | |
816338b5 | 14370 | |
48649e1b TT |
14371 | map_breakpoint_numbers |
14372 | (args, [&] (breakpoint *b) | |
14373 | { | |
14374 | iterate_over_related_breakpoints | |
14375 | (b, [&] (breakpoint *bpt) | |
14376 | { | |
14377 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14378 | }); | |
14379 | }); | |
c906108c SS |
14380 | } |
14381 | ||
c906108c | 14382 | static void |
4495129a | 14383 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14384 | { |
48649e1b TT |
14385 | map_breakpoint_numbers |
14386 | (args, [&] (breakpoint *b) | |
14387 | { | |
14388 | iterate_over_related_breakpoints | |
14389 | (b, [&] (breakpoint *bpt) | |
14390 | { | |
14391 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14392 | }); | |
14393 | }); | |
c906108c SS |
14394 | } |
14395 | \f | |
fa8d40ab | 14396 | static void |
981a3fb3 | 14397 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14398 | { |
14399 | } | |
14400 | ||
14401 | static void | |
981a3fb3 | 14402 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14403 | { |
14404 | } | |
14405 | ||
1f3b5d1b PP |
14406 | /* Invalidate last known value of any hardware watchpoint if |
14407 | the memory which that value represents has been written to by | |
14408 | GDB itself. */ | |
14409 | ||
14410 | static void | |
8de0566d YQ |
14411 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14412 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14413 | const bfd_byte *data) |
14414 | { | |
14415 | struct breakpoint *bp; | |
14416 | ||
14417 | ALL_BREAKPOINTS (bp) | |
14418 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14419 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14420 | { |
3a5c3e22 | 14421 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14422 | |
850645cf | 14423 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14424 | { |
14425 | struct bp_location *loc; | |
14426 | ||
14427 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14428 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14429 | && loc->address + loc->length > addr | |
14430 | && addr + len > loc->address) | |
14431 | { | |
3a5c3e22 PA |
14432 | wp->val = NULL; |
14433 | wp->val_valid = 0; | |
14434 | } | |
14435 | } | |
1f3b5d1b PP |
14436 | } |
14437 | } | |
14438 | ||
8181d85f DJ |
14439 | /* Create and insert a breakpoint for software single step. */ |
14440 | ||
14441 | void | |
6c95b8df | 14442 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14443 | const address_space *aspace, |
4a64f543 | 14444 | CORE_ADDR next_pc) |
8181d85f | 14445 | { |
7c16b83e PA |
14446 | struct thread_info *tp = inferior_thread (); |
14447 | struct symtab_and_line sal; | |
14448 | CORE_ADDR pc = next_pc; | |
8181d85f | 14449 | |
34b7e8a6 PA |
14450 | if (tp->control.single_step_breakpoints == NULL) |
14451 | { | |
14452 | tp->control.single_step_breakpoints | |
5d5658a1 | 14453 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14454 | } |
8181d85f | 14455 | |
7c16b83e PA |
14456 | sal = find_pc_line (pc, 0); |
14457 | sal.pc = pc; | |
14458 | sal.section = find_pc_overlay (pc); | |
14459 | sal.explicit_pc = 1; | |
34b7e8a6 | 14460 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14461 | |
7c16b83e | 14462 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14463 | } |
14464 | ||
93f9a11f YQ |
14465 | /* Insert single step breakpoints according to the current state. */ |
14466 | ||
14467 | int | |
14468 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14469 | { | |
f5ea389a | 14470 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14471 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14472 | |
f5ea389a | 14473 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14474 | |
a0ff9e1a | 14475 | if (!next_pcs.empty ()) |
93f9a11f | 14476 | { |
f5ea389a | 14477 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14478 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14479 | |
a0ff9e1a | 14480 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14481 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14482 | ||
93f9a11f YQ |
14483 | return 1; |
14484 | } | |
14485 | else | |
14486 | return 0; | |
14487 | } | |
14488 | ||
34b7e8a6 | 14489 | /* See breakpoint.h. */ |
f02253f1 HZ |
14490 | |
14491 | int | |
7c16b83e | 14492 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14493 | const address_space *aspace, |
7c16b83e | 14494 | CORE_ADDR pc) |
1aafd4da | 14495 | { |
7c16b83e | 14496 | struct bp_location *loc; |
1aafd4da | 14497 | |
7c16b83e PA |
14498 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14499 | if (loc->inserted | |
14500 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14501 | return 1; | |
1aafd4da | 14502 | |
7c16b83e | 14503 | return 0; |
ef370185 JB |
14504 | } |
14505 | ||
14506 | /* Check whether a software single-step breakpoint is inserted at | |
14507 | PC. */ | |
14508 | ||
14509 | int | |
accd0bcd | 14510 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14511 | CORE_ADDR pc) |
14512 | { | |
34b7e8a6 PA |
14513 | struct breakpoint *bpt; |
14514 | ||
14515 | ALL_BREAKPOINTS (bpt) | |
14516 | { | |
14517 | if (bpt->type == bp_single_step | |
14518 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14519 | return 1; | |
14520 | } | |
14521 | return 0; | |
1aafd4da UW |
14522 | } |
14523 | ||
1042e4c0 SS |
14524 | /* Tracepoint-specific operations. */ |
14525 | ||
14526 | /* Set tracepoint count to NUM. */ | |
14527 | static void | |
14528 | set_tracepoint_count (int num) | |
14529 | { | |
14530 | tracepoint_count = num; | |
4fa62494 | 14531 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14532 | } |
14533 | ||
70221824 | 14534 | static void |
0b39b52e | 14535 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14536 | { |
55aa24fb | 14537 | struct breakpoint_ops *ops; |
55aa24fb | 14538 | |
ffc2605c TT |
14539 | event_location_up location = string_to_event_location (&arg, |
14540 | current_language); | |
5b56227b | 14541 | if (location != NULL |
ffc2605c | 14542 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14543 | ops = &tracepoint_probe_breakpoint_ops; |
14544 | else | |
14545 | ops = &tracepoint_breakpoint_ops; | |
14546 | ||
558a9d82 | 14547 | create_breakpoint (get_current_arch (), |
ffc2605c | 14548 | location.get (), |
f00aae0f | 14549 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14550 | 0 /* tempflag */, |
14551 | bp_tracepoint /* type_wanted */, | |
14552 | 0 /* Ignore count */, | |
14553 | pending_break_support, | |
14554 | ops, | |
14555 | from_tty, | |
14556 | 1 /* enabled */, | |
14557 | 0 /* internal */, 0); | |
1042e4c0 SS |
14558 | } |
14559 | ||
70221824 | 14560 | static void |
0b39b52e | 14561 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14562 | { |
ffc2605c TT |
14563 | event_location_up location = string_to_event_location (&arg, |
14564 | current_language); | |
558a9d82 | 14565 | create_breakpoint (get_current_arch (), |
ffc2605c | 14566 | location.get (), |
f00aae0f | 14567 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14568 | 0 /* tempflag */, |
14569 | bp_fast_tracepoint /* type_wanted */, | |
14570 | 0 /* Ignore count */, | |
14571 | pending_break_support, | |
14572 | &tracepoint_breakpoint_ops, | |
14573 | from_tty, | |
14574 | 1 /* enabled */, | |
14575 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14576 | } |
14577 | ||
14578 | /* strace command implementation. Creates a static tracepoint. */ | |
14579 | ||
70221824 | 14580 | static void |
0b39b52e | 14581 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14582 | { |
983af33b | 14583 | struct breakpoint_ops *ops; |
ffc2605c | 14584 | event_location_up location; |
983af33b SDJ |
14585 | |
14586 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14587 | or with a normal static tracepoint. */ | |
61012eef | 14588 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14589 | { |
14590 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14591 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14592 | } |
983af33b | 14593 | else |
f00aae0f KS |
14594 | { |
14595 | ops = &tracepoint_breakpoint_ops; | |
14596 | location = string_to_event_location (&arg, current_language); | |
14597 | } | |
983af33b | 14598 | |
558a9d82 | 14599 | create_breakpoint (get_current_arch (), |
ffc2605c | 14600 | location.get (), |
f00aae0f | 14601 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14602 | 0 /* tempflag */, |
14603 | bp_static_tracepoint /* type_wanted */, | |
14604 | 0 /* Ignore count */, | |
14605 | pending_break_support, | |
14606 | ops, | |
14607 | from_tty, | |
14608 | 1 /* enabled */, | |
14609 | 0 /* internal */, 0); | |
7a697b8d SS |
14610 | } |
14611 | ||
409873ef SS |
14612 | /* Set up a fake reader function that gets command lines from a linked |
14613 | list that was acquired during tracepoint uploading. */ | |
14614 | ||
14615 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14616 | static int next_cmd; |
409873ef SS |
14617 | |
14618 | static char * | |
14619 | read_uploaded_action (void) | |
14620 | { | |
a18ba4e4 | 14621 | char *rslt = nullptr; |
409873ef | 14622 | |
a18ba4e4 SM |
14623 | if (next_cmd < this_utp->cmd_strings.size ()) |
14624 | { | |
67aa1f3c | 14625 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14626 | next_cmd++; |
14627 | } | |
409873ef SS |
14628 | |
14629 | return rslt; | |
14630 | } | |
14631 | ||
00bf0b85 SS |
14632 | /* Given information about a tracepoint as recorded on a target (which |
14633 | can be either a live system or a trace file), attempt to create an | |
14634 | equivalent GDB tracepoint. This is not a reliable process, since | |
14635 | the target does not necessarily have all the information used when | |
14636 | the tracepoint was originally defined. */ | |
14637 | ||
d9b3f62e | 14638 | struct tracepoint * |
00bf0b85 | 14639 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14640 | { |
f2fc3015 TT |
14641 | const char *addr_str; |
14642 | char small_buf[100]; | |
d9b3f62e | 14643 | struct tracepoint *tp; |
fd9b8c24 | 14644 | |
409873ef | 14645 | if (utp->at_string) |
67aa1f3c | 14646 | addr_str = utp->at_string.get (); |
409873ef SS |
14647 | else |
14648 | { | |
14649 | /* In the absence of a source location, fall back to raw | |
14650 | address. Since there is no way to confirm that the address | |
14651 | means the same thing as when the trace was started, warn the | |
14652 | user. */ | |
3e43a32a MS |
14653 | warning (_("Uploaded tracepoint %d has no " |
14654 | "source location, using raw address"), | |
409873ef | 14655 | utp->number); |
8c042590 | 14656 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14657 | addr_str = small_buf; |
14658 | } | |
14659 | ||
14660 | /* There's not much we can do with a sequence of bytecodes. */ | |
14661 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14662 | warning (_("Uploaded tracepoint %d condition " |
14663 | "has no source form, ignoring it"), | |
409873ef | 14664 | utp->number); |
d5551862 | 14665 | |
ffc2605c TT |
14666 | event_location_up location = string_to_event_location (&addr_str, |
14667 | current_language); | |
8cdf0e15 | 14668 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14669 | location.get (), |
67aa1f3c | 14670 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14671 | 0 /* parse cond/thread */, |
8cdf0e15 | 14672 | 0 /* tempflag */, |
0fb4aa4b | 14673 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14674 | 0 /* Ignore count */, |
14675 | pending_break_support, | |
348d480f | 14676 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14677 | 0 /* from_tty */, |
84f4c1fe | 14678 | utp->enabled /* enabled */, |
44f238bb PA |
14679 | 0 /* internal */, |
14680 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14681 | return NULL; |
fd9b8c24 | 14682 | |
409873ef | 14683 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14684 | tp = get_tracepoint (tracepoint_count); |
14685 | gdb_assert (tp != NULL); | |
d5551862 | 14686 | |
00bf0b85 SS |
14687 | if (utp->pass > 0) |
14688 | { | |
8c042590 | 14689 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14690 | tp->number); |
00bf0b85 | 14691 | |
409873ef | 14692 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14693 | } |
14694 | ||
409873ef SS |
14695 | /* If we have uploaded versions of the original commands, set up a |
14696 | special-purpose "reader" function and call the usual command line | |
14697 | reader, then pass the result to the breakpoint command-setting | |
14698 | function. */ | |
a18ba4e4 | 14699 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14700 | { |
12973681 | 14701 | counted_command_line cmd_list; |
00bf0b85 | 14702 | |
409873ef | 14703 | this_utp = utp; |
3149d8c1 | 14704 | next_cmd = 0; |
d5551862 | 14705 | |
60b3cef2 | 14706 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14707 | |
c1fc2657 | 14708 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14709 | } |
a18ba4e4 SM |
14710 | else if (!utp->actions.empty () |
14711 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14712 | warning (_("Uploaded tracepoint %d actions " |
14713 | "have no source form, ignoring them"), | |
409873ef | 14714 | utp->number); |
00bf0b85 | 14715 | |
f196051f | 14716 | /* Copy any status information that might be available. */ |
c1fc2657 | 14717 | tp->hit_count = utp->hit_count; |
f196051f SS |
14718 | tp->traceframe_usage = utp->traceframe_usage; |
14719 | ||
00bf0b85 | 14720 | return tp; |
d9b3f62e | 14721 | } |
00bf0b85 | 14722 | |
1042e4c0 SS |
14723 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14724 | omitted. */ | |
14725 | ||
14726 | static void | |
1d12d88f | 14727 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14728 | { |
79a45e25 | 14729 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14730 | int num_printed; |
1042e4c0 | 14731 | |
e5a67952 | 14732 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14733 | |
14734 | if (num_printed == 0) | |
1042e4c0 | 14735 | { |
e5a67952 | 14736 | if (args == NULL || *args == '\0') |
112e8700 | 14737 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14738 | else |
112e8700 | 14739 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14740 | } |
ad443146 SS |
14741 | |
14742 | default_collect_info (); | |
1042e4c0 SS |
14743 | } |
14744 | ||
4a64f543 | 14745 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14746 | Not supported by all targets. */ |
14747 | static void | |
5fed81ff | 14748 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14749 | { |
14750 | enable_command (args, from_tty); | |
14751 | } | |
14752 | ||
4a64f543 | 14753 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14754 | Not supported by all targets. */ |
14755 | static void | |
5fed81ff | 14756 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14757 | { |
14758 | disable_command (args, from_tty); | |
14759 | } | |
14760 | ||
4a64f543 | 14761 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14762 | static void |
4495129a | 14763 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14764 | { |
35df4500 | 14765 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14766 | |
14767 | dont_repeat (); | |
14768 | ||
14769 | if (arg == 0) | |
14770 | { | |
14771 | int breaks_to_delete = 0; | |
14772 | ||
14773 | /* Delete all breakpoints if no argument. | |
14774 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14775 | have to be deleted with an explicit breakpoint number |
14776 | argument. */ | |
1042e4c0 | 14777 | ALL_TRACEPOINTS (b) |
46c6471b | 14778 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14779 | { |
14780 | breaks_to_delete = 1; | |
14781 | break; | |
14782 | } | |
1042e4c0 SS |
14783 | |
14784 | /* Ask user only if there are some breakpoints to delete. */ | |
14785 | if (!from_tty | |
14786 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14787 | { | |
35df4500 | 14788 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14789 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14790 | delete_breakpoint (b); |
1042e4c0 SS |
14791 | } |
14792 | } | |
14793 | else | |
48649e1b | 14794 | map_breakpoint_numbers |
b926417a | 14795 | (arg, [&] (breakpoint *br) |
48649e1b | 14796 | { |
b926417a | 14797 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14798 | }); |
1042e4c0 SS |
14799 | } |
14800 | ||
197f0a60 TT |
14801 | /* Helper function for trace_pass_command. */ |
14802 | ||
14803 | static void | |
d9b3f62e | 14804 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14805 | { |
d9b3f62e | 14806 | tp->pass_count = count; |
76727919 | 14807 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14808 | if (from_tty) |
14809 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14810 | tp->number, count); |
197f0a60 TT |
14811 | } |
14812 | ||
1042e4c0 SS |
14813 | /* Set passcount for tracepoint. |
14814 | ||
14815 | First command argument is passcount, second is tracepoint number. | |
14816 | If tracepoint number omitted, apply to most recently defined. | |
14817 | Also accepts special argument "all". */ | |
14818 | ||
14819 | static void | |
0b39b52e | 14820 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14821 | { |
d9b3f62e | 14822 | struct tracepoint *t1; |
0b39b52e | 14823 | ULONGEST count; |
1042e4c0 SS |
14824 | |
14825 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14826 | error (_("passcount command requires an " |
14827 | "argument (count + optional TP num)")); | |
1042e4c0 | 14828 | |
0b39b52e | 14829 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14830 | |
529480d0 | 14831 | args = skip_spaces (args); |
1042e4c0 SS |
14832 | if (*args && strncasecmp (args, "all", 3) == 0) |
14833 | { | |
d9b3f62e PA |
14834 | struct breakpoint *b; |
14835 | ||
1042e4c0 | 14836 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14837 | if (*args) |
14838 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14839 | |
d9b3f62e | 14840 | ALL_TRACEPOINTS (b) |
197f0a60 | 14841 | { |
d9b3f62e | 14842 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14843 | trace_pass_set_count (t1, count, from_tty); |
14844 | } | |
14845 | } | |
14846 | else if (*args == '\0') | |
1042e4c0 | 14847 | { |
5fa1d40e | 14848 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14849 | if (t1) |
197f0a60 TT |
14850 | trace_pass_set_count (t1, count, from_tty); |
14851 | } | |
14852 | else | |
14853 | { | |
bfd28288 PA |
14854 | number_or_range_parser parser (args); |
14855 | while (!parser.finished ()) | |
1042e4c0 | 14856 | { |
bfd28288 | 14857 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14858 | if (t1) |
14859 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14860 | } |
14861 | } | |
1042e4c0 SS |
14862 | } |
14863 | ||
d9b3f62e | 14864 | struct tracepoint * |
1042e4c0 SS |
14865 | get_tracepoint (int num) |
14866 | { | |
14867 | struct breakpoint *t; | |
14868 | ||
14869 | ALL_TRACEPOINTS (t) | |
14870 | if (t->number == num) | |
d9b3f62e | 14871 | return (struct tracepoint *) t; |
1042e4c0 SS |
14872 | |
14873 | return NULL; | |
14874 | } | |
14875 | ||
d5551862 SS |
14876 | /* Find the tracepoint with the given target-side number (which may be |
14877 | different from the tracepoint number after disconnecting and | |
14878 | reconnecting). */ | |
14879 | ||
d9b3f62e | 14880 | struct tracepoint * |
d5551862 SS |
14881 | get_tracepoint_by_number_on_target (int num) |
14882 | { | |
d9b3f62e | 14883 | struct breakpoint *b; |
d5551862 | 14884 | |
d9b3f62e PA |
14885 | ALL_TRACEPOINTS (b) |
14886 | { | |
14887 | struct tracepoint *t = (struct tracepoint *) b; | |
14888 | ||
14889 | if (t->number_on_target == num) | |
14890 | return t; | |
14891 | } | |
d5551862 SS |
14892 | |
14893 | return NULL; | |
14894 | } | |
14895 | ||
1042e4c0 | 14896 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14897 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14898 | If the argument is missing, the most recent tracepoint |
14899 | (tracepoint_count) is returned. */ | |
14900 | ||
d9b3f62e | 14901 | struct tracepoint * |
0b39b52e | 14902 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14903 | number_or_range_parser *parser) |
1042e4c0 | 14904 | { |
1042e4c0 SS |
14905 | struct breakpoint *t; |
14906 | int tpnum; | |
0b39b52e | 14907 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14908 | |
bfd28288 | 14909 | if (parser != NULL) |
197f0a60 | 14910 | { |
bfd28288 PA |
14911 | gdb_assert (!parser->finished ()); |
14912 | tpnum = parser->get_number (); | |
197f0a60 TT |
14913 | } |
14914 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14915 | tpnum = tracepoint_count; |
1042e4c0 | 14916 | else |
197f0a60 | 14917 | tpnum = get_number (arg); |
1042e4c0 SS |
14918 | |
14919 | if (tpnum <= 0) | |
14920 | { | |
14921 | if (instring && *instring) | |
14922 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14923 | instring); | |
14924 | else | |
5fa1d40e | 14925 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14926 | return NULL; |
14927 | } | |
14928 | ||
14929 | ALL_TRACEPOINTS (t) | |
14930 | if (t->number == tpnum) | |
14931 | { | |
d9b3f62e | 14932 | return (struct tracepoint *) t; |
1042e4c0 SS |
14933 | } |
14934 | ||
1042e4c0 SS |
14935 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14936 | return NULL; | |
14937 | } | |
14938 | ||
d9b3f62e PA |
14939 | void |
14940 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14941 | { | |
14942 | if (b->thread != -1) | |
14943 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14944 | ||
14945 | if (b->task != 0) | |
14946 | fprintf_unfiltered (fp, " task %d", b->task); | |
14947 | ||
14948 | fprintf_unfiltered (fp, "\n"); | |
14949 | } | |
14950 | ||
6149aea9 PA |
14951 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14952 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14953 | on each breakpoint and only include the ones for which it returns | |
14954 | non-zero. */ | |
14955 | ||
1042e4c0 | 14956 | static void |
4495129a | 14957 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 14958 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14959 | { |
14960 | struct breakpoint *tp; | |
6149aea9 | 14961 | int any = 0; |
6149aea9 | 14962 | int extra_trace_bits = 0; |
1042e4c0 | 14963 | |
6149aea9 PA |
14964 | if (filename == 0 || *filename == 0) |
14965 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14966 | |
14967 | /* See if we have anything to save. */ | |
6149aea9 | 14968 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14969 | { |
6149aea9 | 14970 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14971 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14972 | continue; |
14973 | ||
14974 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14975 | if (filter && !filter (tp)) | |
14976 | continue; | |
14977 | ||
14978 | any = 1; | |
14979 | ||
14980 | if (is_tracepoint (tp)) | |
14981 | { | |
14982 | extra_trace_bits = 1; | |
14983 | ||
14984 | /* We can stop searching. */ | |
14985 | break; | |
14986 | } | |
1042e4c0 | 14987 | } |
6149aea9 PA |
14988 | |
14989 | if (!any) | |
1042e4c0 | 14990 | { |
6149aea9 | 14991 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14992 | return; |
14993 | } | |
14994 | ||
ee0c3293 | 14995 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14996 | |
14997 | stdio_file fp; | |
14998 | ||
ee0c3293 | 14999 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15000 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15001 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15002 | |
6149aea9 | 15003 | if (extra_trace_bits) |
d7e74731 | 15004 | save_trace_state_variables (&fp); |
8bf6485c | 15005 | |
6149aea9 | 15006 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15007 | { |
6149aea9 | 15008 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15009 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15010 | continue; |
8bf6485c | 15011 | |
6149aea9 PA |
15012 | /* If we have a filter, only save the breakpoints it accepts. */ |
15013 | if (filter && !filter (tp)) | |
15014 | continue; | |
15015 | ||
d7e74731 | 15016 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15017 | |
6149aea9 PA |
15018 | /* Note, we can't rely on tp->number for anything, as we can't |
15019 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15020 | instead. */ | |
15021 | ||
15022 | if (tp->cond_string) | |
d7e74731 | 15023 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15024 | |
15025 | if (tp->ignore_count) | |
d7e74731 | 15026 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15027 | |
2d9442cc | 15028 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15029 | { |
d7e74731 | 15030 | fp.puts (" commands\n"); |
a7bdde9e | 15031 | |
d7e74731 | 15032 | current_uiout->redirect (&fp); |
492d29ea | 15033 | TRY |
1042e4c0 | 15034 | { |
d1b0a7bf | 15035 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15036 | } |
492d29ea PA |
15037 | CATCH (ex, RETURN_MASK_ALL) |
15038 | { | |
112e8700 | 15039 | current_uiout->redirect (NULL); |
492d29ea PA |
15040 | throw_exception (ex); |
15041 | } | |
15042 | END_CATCH | |
1042e4c0 | 15043 | |
112e8700 | 15044 | current_uiout->redirect (NULL); |
d7e74731 | 15045 | fp.puts (" end\n"); |
1042e4c0 | 15046 | } |
6149aea9 PA |
15047 | |
15048 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15049 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15050 | |
15051 | /* If this is a multi-location breakpoint, check if the locations | |
15052 | should be individually disabled. Watchpoint locations are | |
15053 | special, and not user visible. */ | |
15054 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15055 | { | |
15056 | struct bp_location *loc; | |
15057 | int n = 1; | |
15058 | ||
15059 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15060 | if (!loc->enabled) | |
d7e74731 | 15061 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15062 | } |
1042e4c0 | 15063 | } |
8bf6485c | 15064 | |
6149aea9 | 15065 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15066 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15067 | |
1042e4c0 | 15068 | if (from_tty) |
ee0c3293 | 15069 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15070 | } |
15071 | ||
15072 | /* The `save breakpoints' command. */ | |
15073 | ||
15074 | static void | |
4495129a | 15075 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15076 | { |
15077 | save_breakpoints (args, from_tty, NULL); | |
15078 | } | |
15079 | ||
15080 | /* The `save tracepoints' command. */ | |
15081 | ||
15082 | static void | |
4495129a | 15083 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15084 | { |
15085 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15086 | } |
15087 | ||
15088 | /* Create a vector of all tracepoints. */ | |
15089 | ||
f51e0e20 | 15090 | std::vector<breakpoint *> |
eeae04df | 15091 | all_tracepoints (void) |
1042e4c0 | 15092 | { |
f51e0e20 | 15093 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15094 | struct breakpoint *tp; |
15095 | ||
15096 | ALL_TRACEPOINTS (tp) | |
15097 | { | |
f51e0e20 | 15098 | tp_vec.push_back (tp); |
1042e4c0 SS |
15099 | } |
15100 | ||
15101 | return tp_vec; | |
15102 | } | |
15103 | ||
c906108c | 15104 | \f |
629500fa KS |
15105 | /* This help string is used to consolidate all the help string for specifying |
15106 | locations used by several commands. */ | |
15107 | ||
15108 | #define LOCATION_HELP_STRING \ | |
15109 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15110 | source filename, function name, label name, and line number.\n\ | |
15111 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15112 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15113 | \"factorial.c:fact:the_top\".\n\ | |
15114 | \n\ | |
15115 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15116 | program. Example: To specify the fourth byte past the start function\n\ | |
15117 | \"main\", use \"*main + 4\".\n\ | |
15118 | \n\ | |
15119 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15120 | syntax to specify location parameters.\n\ | |
15121 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15122 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15123 | -function fact -label the_top\".\n\ |
15124 | \n\ | |
15125 | By default, a specified function is matched against the program's\n\ | |
15126 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15127 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15128 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15129 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15130 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15131 | |
4a64f543 MS |
15132 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15133 | commands. It is defined as a macro to prevent duplication. | |
15134 | COMMAND should be a string constant containing the name of the | |
15135 | command. */ | |
629500fa | 15136 | |
31e2b00f | 15137 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15138 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15139 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15140 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15141 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15142 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15143 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15144 | below.\n\ | |
15145 | \n\ | |
dc10affe PA |
15146 | With no LOCATION, uses current execution address of the selected\n\ |
15147 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15148 | \n\ |
15149 | THREADNUM is the number from \"info threads\".\n\ | |
15150 | CONDITION is a boolean expression.\n\ | |
629500fa | 15151 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15152 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15153 | conditions are different.\n\ | |
31e2b00f AS |
15154 | \n\ |
15155 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15156 | ||
44feb3ce TT |
15157 | /* List of subcommands for "catch". */ |
15158 | static struct cmd_list_element *catch_cmdlist; | |
15159 | ||
15160 | /* List of subcommands for "tcatch". */ | |
15161 | static struct cmd_list_element *tcatch_cmdlist; | |
15162 | ||
9ac4176b | 15163 | void |
a121b7c1 | 15164 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15165 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15166 | completer_ftype *completer, |
44feb3ce TT |
15167 | void *user_data_catch, |
15168 | void *user_data_tcatch) | |
15169 | { | |
15170 | struct cmd_list_element *command; | |
15171 | ||
0450cc4c | 15172 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15173 | &catch_cmdlist); |
15174 | set_cmd_sfunc (command, sfunc); | |
15175 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15176 | set_cmd_completer (command, completer); |
44feb3ce | 15177 | |
0450cc4c | 15178 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15179 | &tcatch_cmdlist); |
15180 | set_cmd_sfunc (command, sfunc); | |
15181 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15182 | set_cmd_completer (command, completer); |
44feb3ce TT |
15183 | } |
15184 | ||
6149aea9 | 15185 | static void |
981a3fb3 | 15186 | save_command (const char *arg, int from_tty) |
6149aea9 | 15187 | { |
3e43a32a MS |
15188 | printf_unfiltered (_("\"save\" must be followed by " |
15189 | "the name of a save subcommand.\n")); | |
635c7e8a | 15190 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15191 | } |
15192 | ||
84f4c1fe PM |
15193 | struct breakpoint * |
15194 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15195 | void *data) | |
15196 | { | |
35df4500 | 15197 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15198 | |
35df4500 | 15199 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15200 | { |
15201 | if ((*callback) (b, data)) | |
15202 | return b; | |
15203 | } | |
15204 | ||
15205 | return NULL; | |
15206 | } | |
15207 | ||
0574c78f GB |
15208 | /* Zero if any of the breakpoint's locations could be a location where |
15209 | functions have been inlined, nonzero otherwise. */ | |
15210 | ||
15211 | static int | |
15212 | is_non_inline_function (struct breakpoint *b) | |
15213 | { | |
15214 | /* The shared library event breakpoint is set on the address of a | |
15215 | non-inline function. */ | |
15216 | if (b->type == bp_shlib_event) | |
15217 | return 1; | |
15218 | ||
15219 | return 0; | |
15220 | } | |
15221 | ||
15222 | /* Nonzero if the specified PC cannot be a location where functions | |
15223 | have been inlined. */ | |
15224 | ||
15225 | int | |
accd0bcd | 15226 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15227 | const struct target_waitstatus *ws) |
0574c78f GB |
15228 | { |
15229 | struct breakpoint *b; | |
15230 | struct bp_location *bl; | |
15231 | ||
15232 | ALL_BREAKPOINTS (b) | |
15233 | { | |
15234 | if (!is_non_inline_function (b)) | |
15235 | continue; | |
15236 | ||
15237 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15238 | { | |
15239 | if (!bl->shlib_disabled | |
09ac7c10 | 15240 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15241 | return 1; |
15242 | } | |
15243 | } | |
15244 | ||
15245 | return 0; | |
15246 | } | |
15247 | ||
2f202fde JK |
15248 | /* Remove any references to OBJFILE which is going to be freed. */ |
15249 | ||
15250 | void | |
15251 | breakpoint_free_objfile (struct objfile *objfile) | |
15252 | { | |
15253 | struct bp_location **locp, *loc; | |
15254 | ||
15255 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15256 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15257 | loc->symtab = NULL; |
15258 | } | |
15259 | ||
2060206e PA |
15260 | void |
15261 | initialize_breakpoint_ops (void) | |
15262 | { | |
15263 | static int initialized = 0; | |
15264 | ||
15265 | struct breakpoint_ops *ops; | |
15266 | ||
15267 | if (initialized) | |
15268 | return; | |
15269 | initialized = 1; | |
15270 | ||
15271 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15272 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15273 | internal and momentary breakpoints, etc.). */ | |
15274 | ops = &bkpt_base_breakpoint_ops; | |
15275 | *ops = base_breakpoint_ops; | |
15276 | ops->re_set = bkpt_re_set; | |
15277 | ops->insert_location = bkpt_insert_location; | |
15278 | ops->remove_location = bkpt_remove_location; | |
15279 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15280 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15281 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15282 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15283 | |
15284 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15285 | ops = &bkpt_breakpoint_ops; | |
15286 | *ops = bkpt_base_breakpoint_ops; | |
15287 | ops->re_set = bkpt_re_set; | |
15288 | ops->resources_needed = bkpt_resources_needed; | |
15289 | ops->print_it = bkpt_print_it; | |
15290 | ops->print_mention = bkpt_print_mention; | |
15291 | ops->print_recreate = bkpt_print_recreate; | |
15292 | ||
15293 | /* Ranged breakpoints. */ | |
15294 | ops = &ranged_breakpoint_ops; | |
15295 | *ops = bkpt_breakpoint_ops; | |
15296 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15297 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15298 | ops->print_it = print_it_ranged_breakpoint; | |
15299 | ops->print_one = print_one_ranged_breakpoint; | |
15300 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15301 | ops->print_mention = print_mention_ranged_breakpoint; | |
15302 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15303 | ||
15304 | /* Internal breakpoints. */ | |
15305 | ops = &internal_breakpoint_ops; | |
15306 | *ops = bkpt_base_breakpoint_ops; | |
15307 | ops->re_set = internal_bkpt_re_set; | |
15308 | ops->check_status = internal_bkpt_check_status; | |
15309 | ops->print_it = internal_bkpt_print_it; | |
15310 | ops->print_mention = internal_bkpt_print_mention; | |
15311 | ||
15312 | /* Momentary breakpoints. */ | |
15313 | ops = &momentary_breakpoint_ops; | |
15314 | *ops = bkpt_base_breakpoint_ops; | |
15315 | ops->re_set = momentary_bkpt_re_set; | |
15316 | ops->check_status = momentary_bkpt_check_status; | |
15317 | ops->print_it = momentary_bkpt_print_it; | |
15318 | ops->print_mention = momentary_bkpt_print_mention; | |
15319 | ||
55aa24fb SDJ |
15320 | /* Probe breakpoints. */ |
15321 | ops = &bkpt_probe_breakpoint_ops; | |
15322 | *ops = bkpt_breakpoint_ops; | |
15323 | ops->insert_location = bkpt_probe_insert_location; | |
15324 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15325 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15326 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15327 | |
2060206e PA |
15328 | /* Watchpoints. */ |
15329 | ops = &watchpoint_breakpoint_ops; | |
15330 | *ops = base_breakpoint_ops; | |
15331 | ops->re_set = re_set_watchpoint; | |
15332 | ops->insert_location = insert_watchpoint; | |
15333 | ops->remove_location = remove_watchpoint; | |
15334 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15335 | ops->check_status = check_status_watchpoint; | |
15336 | ops->resources_needed = resources_needed_watchpoint; | |
15337 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15338 | ops->print_it = print_it_watchpoint; | |
15339 | ops->print_mention = print_mention_watchpoint; | |
15340 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15341 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15342 | |
15343 | /* Masked watchpoints. */ | |
15344 | ops = &masked_watchpoint_breakpoint_ops; | |
15345 | *ops = watchpoint_breakpoint_ops; | |
15346 | ops->insert_location = insert_masked_watchpoint; | |
15347 | ops->remove_location = remove_masked_watchpoint; | |
15348 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15349 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15350 | ops->print_it = print_it_masked_watchpoint; | |
15351 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15352 | ops->print_mention = print_mention_masked_watchpoint; | |
15353 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15354 | ||
15355 | /* Tracepoints. */ | |
15356 | ops = &tracepoint_breakpoint_ops; | |
15357 | *ops = base_breakpoint_ops; | |
15358 | ops->re_set = tracepoint_re_set; | |
15359 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15360 | ops->print_one_detail = tracepoint_print_one_detail; | |
15361 | ops->print_mention = tracepoint_print_mention; | |
15362 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15363 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15364 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15365 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15366 | |
55aa24fb SDJ |
15367 | /* Probe tracepoints. */ |
15368 | ops = &tracepoint_probe_breakpoint_ops; | |
15369 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15370 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15371 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15372 | |
983af33b SDJ |
15373 | /* Static tracepoints with marker (`-m'). */ |
15374 | ops = &strace_marker_breakpoint_ops; | |
15375 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15376 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15377 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15378 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15379 | |
15380 | /* Fork catchpoints. */ | |
15381 | ops = &catch_fork_breakpoint_ops; | |
15382 | *ops = base_breakpoint_ops; | |
15383 | ops->insert_location = insert_catch_fork; | |
15384 | ops->remove_location = remove_catch_fork; | |
15385 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15386 | ops->print_it = print_it_catch_fork; | |
15387 | ops->print_one = print_one_catch_fork; | |
15388 | ops->print_mention = print_mention_catch_fork; | |
15389 | ops->print_recreate = print_recreate_catch_fork; | |
15390 | ||
15391 | /* Vfork catchpoints. */ | |
15392 | ops = &catch_vfork_breakpoint_ops; | |
15393 | *ops = base_breakpoint_ops; | |
15394 | ops->insert_location = insert_catch_vfork; | |
15395 | ops->remove_location = remove_catch_vfork; | |
15396 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15397 | ops->print_it = print_it_catch_vfork; | |
15398 | ops->print_one = print_one_catch_vfork; | |
15399 | ops->print_mention = print_mention_catch_vfork; | |
15400 | ops->print_recreate = print_recreate_catch_vfork; | |
15401 | ||
15402 | /* Exec catchpoints. */ | |
15403 | ops = &catch_exec_breakpoint_ops; | |
15404 | *ops = base_breakpoint_ops; | |
2060206e PA |
15405 | ops->insert_location = insert_catch_exec; |
15406 | ops->remove_location = remove_catch_exec; | |
15407 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15408 | ops->print_it = print_it_catch_exec; | |
15409 | ops->print_one = print_one_catch_exec; | |
15410 | ops->print_mention = print_mention_catch_exec; | |
15411 | ops->print_recreate = print_recreate_catch_exec; | |
15412 | ||
edcc5120 TT |
15413 | /* Solib-related catchpoints. */ |
15414 | ops = &catch_solib_breakpoint_ops; | |
15415 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15416 | ops->insert_location = insert_catch_solib; |
15417 | ops->remove_location = remove_catch_solib; | |
15418 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15419 | ops->check_status = check_status_catch_solib; | |
15420 | ops->print_it = print_it_catch_solib; | |
15421 | ops->print_one = print_one_catch_solib; | |
15422 | ops->print_mention = print_mention_catch_solib; | |
15423 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15424 | |
15425 | ops = &dprintf_breakpoint_ops; | |
15426 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15427 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15428 | ops->resources_needed = bkpt_resources_needed; |
15429 | ops->print_it = bkpt_print_it; | |
15430 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15431 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15432 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15433 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15434 | } |
15435 | ||
8bfd80db YQ |
15436 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15437 | ||
15438 | static struct cmd_list_element *enablebreaklist = NULL; | |
15439 | ||
8588b356 SM |
15440 | /* See breakpoint.h. */ |
15441 | ||
15442 | cmd_list_element *commands_cmd_element = nullptr; | |
15443 | ||
c906108c | 15444 | void |
fba45db2 | 15445 | _initialize_breakpoint (void) |
c906108c SS |
15446 | { |
15447 | struct cmd_list_element *c; | |
15448 | ||
2060206e PA |
15449 | initialize_breakpoint_ops (); |
15450 | ||
76727919 TT |
15451 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15452 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15453 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15454 | |
55aa24fb | 15455 | breakpoint_objfile_key |
43dce439 | 15456 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15457 | |
c906108c SS |
15458 | breakpoint_chain = 0; |
15459 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15460 | before a breakpoint is set. */ | |
15461 | breakpoint_count = 0; | |
15462 | ||
1042e4c0 SS |
15463 | tracepoint_count = 0; |
15464 | ||
1bedd215 AC |
15465 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15466 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15467 | Usage is `ignore N COUNT'.")); | |
c906108c | 15468 | |
8588b356 SM |
15469 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15470 | commands_command, _("\ | |
18da0c51 MG |
15471 | Set commands to be executed when the given breakpoints are hit.\n\ |
15472 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15473 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15474 | (e.g. `5-7').\n\ | |
c906108c SS |
15475 | With no argument, the targeted breakpoint is the last one set.\n\ |
15476 | The commands themselves follow starting on the next line.\n\ | |
15477 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15478 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15479 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15480 | |
d55637df | 15481 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15482 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15483 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15484 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15485 | set_cmd_completer (c, condition_completer); |
c906108c | 15486 | |
1bedd215 | 15487 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15488 | Set a temporary breakpoint.\n\ |
c906108c SS |
15489 | Like \"break\" except the breakpoint is only temporary,\n\ |
15490 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15491 | by using \"enable delete\" on the breakpoint number.\n\ |
15492 | \n" | |
15493 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15494 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15495 | |
1bedd215 | 15496 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15497 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15498 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15499 | some target hardware may not have this support.\n\ |
15500 | \n" | |
15501 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15502 | set_cmd_completer (c, location_completer); |
c906108c | 15503 | |
1bedd215 | 15504 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15505 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15506 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15507 | so it will be deleted when hit.\n\ |
15508 | \n" | |
15509 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15510 | set_cmd_completer (c, location_completer); |
c906108c | 15511 | |
1bedd215 AC |
15512 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15513 | Enable some breakpoints.\n\ | |
c906108c SS |
15514 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15515 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15516 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15517 | With a subcommand you can enable temporarily."), |
c906108c | 15518 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15519 | |
15520 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15521 | ||
84951ab5 | 15522 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15523 | Enable some breakpoints.\n\ |
c906108c SS |
15524 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15525 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15526 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15527 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15528 | |
1a966eab AC |
15529 | add_cmd ("once", no_class, enable_once_command, _("\ |
15530 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15531 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15532 | &enablebreaklist); |
15533 | ||
1a966eab AC |
15534 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15535 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15536 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15537 | &enablebreaklist); |
15538 | ||
816338b5 SS |
15539 | add_cmd ("count", no_class, enable_count_command, _("\ |
15540 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15541 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15542 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15543 | &enablebreaklist); | |
15544 | ||
1a966eab AC |
15545 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15546 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15547 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15548 | &enablelist); |
15549 | ||
1a966eab AC |
15550 | add_cmd ("once", no_class, enable_once_command, _("\ |
15551 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15552 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15553 | &enablelist); |
15554 | ||
15555 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15556 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15557 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15558 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15559 | &enablelist); |
15560 | ||
1bedd215 AC |
15561 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15562 | Disable some breakpoints.\n\ | |
c906108c SS |
15563 | Arguments are breakpoint numbers with spaces in between.\n\ |
15564 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15565 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15566 | &disablelist, "disable ", 1, &cmdlist); |
15567 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15568 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15569 | |
1a966eab AC |
15570 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15571 | Disable some breakpoints.\n\ | |
c906108c SS |
15572 | Arguments are breakpoint numbers with spaces in between.\n\ |
15573 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15574 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15575 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15576 | &disablelist); |
15577 | ||
1bedd215 AC |
15578 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15579 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15580 | Arguments are breakpoint numbers with spaces in between.\n\ |
15581 | To delete all breakpoints, give no argument.\n\ | |
15582 | \n\ | |
15583 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15584 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15585 | &deletelist, "delete ", 1, &cmdlist); |
15586 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15587 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15588 | |
1a966eab AC |
15589 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15590 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15591 | Arguments are breakpoint numbers with spaces in between.\n\ |
15592 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15593 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15594 | &deletelist); |
15595 | ||
1bedd215 | 15596 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15597 | Clear breakpoint at specified location.\n\ |
15598 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15599 | \n\ |
15600 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15601 | is executing in.\n" |
15602 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15603 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15604 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15605 | |
1bedd215 | 15606 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15607 | Set breakpoint at specified location.\n" |
31e2b00f | 15608 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15609 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15610 | |
c906108c SS |
15611 | add_com_alias ("b", "break", class_run, 1); |
15612 | add_com_alias ("br", "break", class_run, 1); | |
15613 | add_com_alias ("bre", "break", class_run, 1); | |
15614 | add_com_alias ("brea", "break", class_run, 1); | |
15615 | ||
c906108c SS |
15616 | if (dbx_commands) |
15617 | { | |
1bedd215 AC |
15618 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15619 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15620 | &stoplist, "stop ", 1, &cmdlist); |
15621 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15622 | _("Break in function or address."), &stoplist); |
c5aa993b | 15623 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15624 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15625 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15626 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15627 | The \"Type\" column indicates one of:\n\ |
15628 | \tbreakpoint - normal breakpoint\n\ | |
15629 | \twatchpoint - watchpoint\n\ | |
15630 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15631 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15632 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15633 | address and file/line number respectively.\n\ |
15634 | \n\ | |
15635 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15636 | are set to the address of the last breakpoint listed unless the command\n\ |
15637 | is prefixed with \"server \".\n\n\ | |
c906108c | 15638 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15639 | breakpoint set.")); |
c906108c SS |
15640 | } |
15641 | ||
11db9430 | 15642 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15643 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15644 | The \"Type\" column indicates one of:\n\ |
15645 | \tbreakpoint - normal breakpoint\n\ | |
15646 | \twatchpoint - watchpoint\n\ | |
15647 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15648 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15649 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15650 | address and file/line number respectively.\n\ |
15651 | \n\ | |
15652 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15653 | are set to the address of the last breakpoint listed unless the command\n\ |
15654 | is prefixed with \"server \".\n\n\ | |
c906108c | 15655 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15656 | breakpoint set.")); |
c906108c | 15657 | |
6b04bdb7 MS |
15658 | add_info_alias ("b", "breakpoints", 1); |
15659 | ||
1a966eab AC |
15660 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15661 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15662 | The \"Type\" column indicates one of:\n\ |
15663 | \tbreakpoint - normal breakpoint\n\ | |
15664 | \twatchpoint - watchpoint\n\ | |
15665 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15666 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15667 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15668 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15669 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15670 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15671 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15672 | address and file/line number respectively.\n\ |
15673 | \n\ | |
15674 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15675 | are set to the address of the last breakpoint listed unless the command\n\ |
15676 | is prefixed with \"server \".\n\n\ | |
c906108c | 15677 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15678 | breakpoint set."), |
c906108c SS |
15679 | &maintenanceinfolist); |
15680 | ||
44feb3ce TT |
15681 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15682 | Set catchpoints to catch events."), | |
15683 | &catch_cmdlist, "catch ", | |
15684 | 0/*allow-unknown*/, &cmdlist); | |
15685 | ||
15686 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15687 | Set temporary catchpoints to catch events."), | |
15688 | &tcatch_cmdlist, "tcatch ", | |
15689 | 0/*allow-unknown*/, &cmdlist); | |
15690 | ||
44feb3ce TT |
15691 | add_catch_command ("fork", _("Catch calls to fork."), |
15692 | catch_fork_command_1, | |
a96d9b2e | 15693 | NULL, |
44feb3ce TT |
15694 | (void *) (uintptr_t) catch_fork_permanent, |
15695 | (void *) (uintptr_t) catch_fork_temporary); | |
15696 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15697 | catch_fork_command_1, | |
a96d9b2e | 15698 | NULL, |
44feb3ce TT |
15699 | (void *) (uintptr_t) catch_vfork_permanent, |
15700 | (void *) (uintptr_t) catch_vfork_temporary); | |
15701 | add_catch_command ("exec", _("Catch calls to exec."), | |
15702 | catch_exec_command_1, | |
a96d9b2e SDJ |
15703 | NULL, |
15704 | CATCH_PERMANENT, | |
15705 | CATCH_TEMPORARY); | |
edcc5120 TT |
15706 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15707 | Usage: catch load [REGEX]\n\ | |
15708 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15709 | catch_load_command_1, | |
15710 | NULL, | |
15711 | CATCH_PERMANENT, | |
15712 | CATCH_TEMPORARY); | |
15713 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15714 | Usage: catch unload [REGEX]\n\ | |
15715 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15716 | catch_unload_command_1, | |
15717 | NULL, | |
15718 | CATCH_PERMANENT, | |
15719 | CATCH_TEMPORARY); | |
c5aa993b | 15720 | |
1bedd215 AC |
15721 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15722 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15723 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15724 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15725 | an expression changes.\n\ |
15726 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15727 | the memory to which it refers.")); | |
65d12d83 | 15728 | set_cmd_completer (c, expression_completer); |
c906108c | 15729 | |
1bedd215 AC |
15730 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15731 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15732 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15733 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15734 | an expression is read.\n\ |
15735 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15736 | the memory to which it refers.")); | |
65d12d83 | 15737 | set_cmd_completer (c, expression_completer); |
c906108c | 15738 | |
1bedd215 AC |
15739 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15740 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15741 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15742 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15743 | an expression is either read or written.\n\ |
15744 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15745 | the memory to which it refers.")); | |
65d12d83 | 15746 | set_cmd_completer (c, expression_completer); |
c906108c | 15747 | |
11db9430 | 15748 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15749 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15750 | |
920d2a44 AC |
15751 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15752 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15753 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15754 | &can_use_hw_watchpoints, _("\ | |
15755 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15756 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15757 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15758 | such is available. (However, any hardware watchpoints that were\n\ | |
15759 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15760 | hardware.)"), |
15761 | NULL, | |
920d2a44 | 15762 | show_can_use_hw_watchpoints, |
85c07804 | 15763 | &setlist, &showlist); |
c906108c SS |
15764 | |
15765 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15766 | |
1042e4c0 SS |
15767 | /* Tracepoint manipulation commands. */ |
15768 | ||
15769 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15770 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15771 | \n" |
15772 | BREAK_ARGS_HELP ("trace") "\n\ | |
15773 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15774 | set_cmd_completer (c, location_completer); | |
15775 | ||
15776 | add_com_alias ("tp", "trace", class_alias, 0); | |
15777 | add_com_alias ("tr", "trace", class_alias, 1); | |
15778 | add_com_alias ("tra", "trace", class_alias, 1); | |
15779 | add_com_alias ("trac", "trace", class_alias, 1); | |
15780 | ||
7a697b8d | 15781 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15782 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15783 | \n" |
15784 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15785 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15786 | set_cmd_completer (c, location_completer); | |
15787 | ||
0fb4aa4b | 15788 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15789 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15790 | \n\ |
15791 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15792 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15793 | or -m MARKER_ID.\n\n\ | |
15794 | If a marker id is specified, probe the marker with that name. With\n\ | |
15795 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15796 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15797 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15798 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15799 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15800 | \n\ | |
15801 | CONDITION is a boolean expression.\n\ | |
629500fa | 15802 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15803 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15804 | conditions are different.\n\ | |
0fb4aa4b PA |
15805 | \n\ |
15806 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15807 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15808 | set_cmd_completer (c, location_completer); | |
15809 | ||
11db9430 | 15810 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15811 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15812 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15813 | last tracepoint set.")); | |
15814 | ||
15815 | add_info_alias ("tp", "tracepoints", 1); | |
15816 | ||
15817 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15818 | Delete specified tracepoints.\n\ | |
15819 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15820 | No argument means delete all tracepoints."), | |
15821 | &deletelist); | |
7e20dfcd | 15822 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15823 | |
15824 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15825 | Disable specified tracepoints.\n\ | |
15826 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15827 | No argument means disable all tracepoints."), | |
15828 | &disablelist); | |
15829 | deprecate_cmd (c, "disable"); | |
15830 | ||
15831 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15832 | Enable specified tracepoints.\n\ | |
15833 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15834 | No argument means enable all tracepoints."), | |
15835 | &enablelist); | |
15836 | deprecate_cmd (c, "enable"); | |
15837 | ||
15838 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15839 | Set the passcount for a tracepoint.\n\ | |
15840 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15841 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15842 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15843 | ||
6149aea9 PA |
15844 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15845 | _("Save breakpoint definitions as a script."), | |
15846 | &save_cmdlist, "save ", | |
15847 | 0/*allow-unknown*/, &cmdlist); | |
15848 | ||
15849 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15850 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15851 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15852 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15853 | session to restore them."), | |
15854 | &save_cmdlist); | |
15855 | set_cmd_completer (c, filename_completer); | |
15856 | ||
15857 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15858 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15859 | Use the 'source' command in another debug session to restore them."), |
15860 | &save_cmdlist); | |
1042e4c0 SS |
15861 | set_cmd_completer (c, filename_completer); |
15862 | ||
6149aea9 PA |
15863 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15864 | deprecate_cmd (c, "save tracepoints"); | |
15865 | ||
1bedd215 | 15866 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15867 | Breakpoint specific settings\n\ |
15868 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15869 | pending breakpoint behavior"), |
fa8d40ab JJ |
15870 | &breakpoint_set_cmdlist, "set breakpoint ", |
15871 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15872 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15873 | Breakpoint specific settings\n\ |
15874 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15875 | pending breakpoint behavior"), |
fa8d40ab JJ |
15876 | &breakpoint_show_cmdlist, "show breakpoint ", |
15877 | 0/*allow-unknown*/, &showlist); | |
15878 | ||
7915a72c AC |
15879 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15880 | &pending_break_support, _("\ | |
15881 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15882 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15883 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15884 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15885 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15886 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15887 | NULL, |
920d2a44 | 15888 | show_pending_break_support, |
6e1d7d6c AC |
15889 | &breakpoint_set_cmdlist, |
15890 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15891 | |
15892 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15893 | |
15894 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15895 | &automatic_hardware_breakpoints, _("\ | |
15896 | Set automatic usage of hardware breakpoints."), _("\ | |
15897 | Show automatic usage of hardware breakpoints."), _("\ | |
15898 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15899 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15900 | a warning will be emitted for such breakpoints."), | |
15901 | NULL, | |
15902 | show_automatic_hardware_breakpoints, | |
15903 | &breakpoint_set_cmdlist, | |
15904 | &breakpoint_show_cmdlist); | |
74960c60 | 15905 | |
a25a5a45 PA |
15906 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15907 | &always_inserted_mode, _("\ | |
74960c60 VP |
15908 | Set mode for inserting breakpoints."), _("\ |
15909 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15910 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15911 | they're created, kept inserted even when execution stops, and removed\n\ | |
15912 | only when the user deletes them. When this mode is off (the default),\n\ | |
15913 | breakpoints are inserted only when execution continues, and removed\n\ | |
15914 | when execution stops."), | |
72d0e2c5 YQ |
15915 | NULL, |
15916 | &show_always_inserted_mode, | |
15917 | &breakpoint_set_cmdlist, | |
15918 | &breakpoint_show_cmdlist); | |
f1310107 | 15919 | |
b775012e LM |
15920 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15921 | condition_evaluation_enums, | |
15922 | &condition_evaluation_mode_1, _("\ | |
15923 | Set mode of breakpoint condition evaluation."), _("\ | |
15924 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15925 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15926 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15927 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15928 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15929 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15930 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15931 | be set to \"gdb\""), | |
15932 | &set_condition_evaluation_mode, | |
15933 | &show_condition_evaluation_mode, | |
15934 | &breakpoint_set_cmdlist, | |
15935 | &breakpoint_show_cmdlist); | |
15936 | ||
f1310107 TJB |
15937 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15938 | Set a breakpoint for an address range.\n\ | |
15939 | break-range START-LOCATION, END-LOCATION\n\ | |
15940 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15941 | LINENUM, for that line in the current file,\n\ | |
15942 | FILE:LINENUM, for that line in that file,\n\ | |
15943 | +OFFSET, for that number of lines after the current line\n\ | |
15944 | or the start of the range\n\ | |
15945 | FUNCTION, for the first line in that function,\n\ | |
15946 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15947 | *ADDRESS, for the instruction at that address.\n\ | |
15948 | \n\ | |
15949 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15950 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15951 | range (including START-LOCATION and END-LOCATION).")); | |
15952 | ||
e7e0cddf | 15953 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15954 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15955 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15956 | location may be a linespec, explicit, or address location.\n" |
15957 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15958 | set_cmd_completer (c, location_completer); |
15959 | ||
15960 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15961 | dprintf_style_enums, &dprintf_style, _("\ | |
15962 | Set the style of usage for dynamic printf."), _("\ | |
15963 | Show the style of usage for dynamic printf."), _("\ | |
15964 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15965 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15966 | console, as with the \"printf\" command.\n\ | |
15967 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15968 | program; by default printf(), but you can choose a different function or\n\ | |
15969 | output stream by setting dprintf-function and dprintf-channel."), | |
15970 | update_dprintf_commands, NULL, | |
15971 | &setlist, &showlist); | |
15972 | ||
15973 | dprintf_function = xstrdup ("printf"); | |
15974 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15975 | &dprintf_function, _("\ | |
15976 | Set the function to use for dynamic printf"), _("\ | |
15977 | Show the function to use for dynamic printf"), NULL, | |
15978 | update_dprintf_commands, NULL, | |
15979 | &setlist, &showlist); | |
15980 | ||
15981 | dprintf_channel = xstrdup (""); | |
15982 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15983 | &dprintf_channel, _("\ | |
15984 | Set the channel to use for dynamic printf"), _("\ | |
15985 | Show the channel to use for dynamic printf"), NULL, | |
15986 | update_dprintf_commands, NULL, | |
15987 | &setlist, &showlist); | |
15988 | ||
d3ce09f5 SS |
15989 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15990 | &disconnected_dprintf, _("\ | |
15991 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15992 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15993 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15994 | even if GDB disconnects or detaches from the target."), | |
15995 | NULL, | |
15996 | NULL, | |
15997 | &setlist, &showlist); | |
15998 | ||
15999 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16000 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16001 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16002 | ||
765dc015 | 16003 | automatic_hardware_breakpoints = 1; |
f3b1572e | 16004 | |
76727919 TT |
16005 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16006 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16007 | } |