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" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
4de283e4 | 59 | #include "gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 TT |
61 | #include "cli/cli-utils.h" |
62 | #include "continuations.h" | |
d55e5aa6 | 63 | #include "stack.h" |
4de283e4 TT |
64 | #include "skip.h" |
65 | #include "ax-gdb.h" | |
66 | #include "dummy-frame.h" | |
67 | #include "interps.h" | |
68 | #include "common/format.h" | |
cfc31633 | 69 | #include "thread-fsm.h" |
5d5658a1 | 70 | #include "tid-parse.h" |
4de283e4 TT |
71 | #include "cli/cli-style.h" |
72 | #include "mi/mi-main.h" | |
d3ce09f5 | 73 | |
1042e4c0 SS |
74 | /* readline include files */ |
75 | #include "readline/readline.h" | |
76 | #include "readline/history.h" | |
77 | ||
78 | /* readline defines this. */ | |
79 | #undef savestring | |
80 | ||
034dad6f | 81 | #include "mi/mi-common.h" |
6dddc817 | 82 | #include "extension.h" |
325fac50 | 83 | #include <algorithm> |
5ed8105e | 84 | #include "progspace-and-thread.h" |
6c5b2ebe | 85 | #include "common/array-view.h" |
76f9c9cf | 86 | #include "common/gdb_optional.h" |
104c1213 | 87 | |
e7e8980f YQ |
88 | /* Enums for exception-handling support. */ |
89 | enum exception_event_kind | |
90 | { | |
91 | EX_EVENT_THROW, | |
591f19e8 | 92 | EX_EVENT_RETHROW, |
e7e8980f YQ |
93 | EX_EVENT_CATCH |
94 | }; | |
95 | ||
4a64f543 | 96 | /* Prototypes for local functions. */ |
c906108c | 97 | |
896b6bda | 98 | static void map_breakpoint_numbers (const char *, |
48649e1b | 99 | gdb::function_view<void (breakpoint *)>); |
c906108c | 100 | |
348d480f PA |
101 | static void breakpoint_re_set_default (struct breakpoint *); |
102 | ||
f00aae0f KS |
103 | static void |
104 | create_sals_from_location_default (const struct event_location *location, | |
105 | struct linespec_result *canonical, | |
106 | enum bptype type_wanted); | |
983af33b SDJ |
107 | |
108 | static void create_breakpoints_sal_default (struct gdbarch *, | |
109 | struct linespec_result *, | |
e1e01040 PA |
110 | gdb::unique_xmalloc_ptr<char>, |
111 | gdb::unique_xmalloc_ptr<char>, | |
112 | enum bptype, | |
983af33b SDJ |
113 | enum bpdisp, int, int, |
114 | int, | |
115 | const struct breakpoint_ops *, | |
44f238bb | 116 | int, int, int, unsigned); |
983af33b | 117 | |
6c5b2ebe PA |
118 | static std::vector<symtab_and_line> decode_location_default |
119 | (struct breakpoint *b, const struct event_location *location, | |
120 | struct program_space *search_pspace); | |
983af33b | 121 | |
a6535de1 TT |
122 | static int can_use_hardware_watchpoint |
123 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 124 | |
a14ed312 | 125 | static void mention (struct breakpoint *); |
c906108c | 126 | |
348d480f PA |
127 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
128 | enum bptype, | |
c0a91b2b | 129 | const struct breakpoint_ops *); |
3742cc8b YQ |
130 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
131 | const struct symtab_and_line *); | |
132 | ||
4a64f543 MS |
133 | /* This function is used in gdbtk sources and thus can not be made |
134 | static. */ | |
63c252f8 | 135 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 136 | struct symtab_and_line, |
c0a91b2b TT |
137 | enum bptype, |
138 | const struct breakpoint_ops *); | |
c906108c | 139 | |
06edf0c0 PA |
140 | static struct breakpoint * |
141 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
142 | enum bptype type, | |
a1aa2221 LM |
143 | const struct breakpoint_ops *ops, |
144 | int loc_enabled); | |
06edf0c0 | 145 | |
76897487 KB |
146 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
147 | ||
a6d9a66e UW |
148 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
149 | CORE_ADDR bpaddr, | |
88f7da05 | 150 | enum bptype bptype); |
76897487 | 151 | |
6c95b8df PA |
152 | static void describe_other_breakpoints (struct gdbarch *, |
153 | struct program_space *, CORE_ADDR, | |
5af949e3 | 154 | struct obj_section *, int); |
c906108c | 155 | |
85d721b8 PA |
156 | static int watchpoint_locations_match (struct bp_location *loc1, |
157 | struct bp_location *loc2); | |
158 | ||
f1310107 | 159 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 160 | const struct address_space *aspace, |
f1310107 TJB |
161 | CORE_ADDR addr); |
162 | ||
d35ae833 | 163 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 164 | const address_space *, |
d35ae833 PA |
165 | CORE_ADDR, int); |
166 | ||
834c0d03 | 167 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 168 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 169 | |
e514a9d6 | 170 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 171 | |
a14ed312 | 172 | static int hw_breakpoint_used_count (void); |
c906108c | 173 | |
a1398e0c PA |
174 | static int hw_watchpoint_use_count (struct breakpoint *); |
175 | ||
176 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
177 | enum bptype type, | |
178 | int *other_type_used); | |
c906108c | 179 | |
816338b5 SS |
180 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
181 | int count); | |
c906108c | 182 | |
fe3f5fa8 | 183 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
184 | static void incref_bp_location (struct bp_location *loc); |
185 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 186 | |
39d61571 | 187 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 188 | |
44702360 PA |
189 | /* update_global_location_list's modes of operation wrt to whether to |
190 | insert locations now. */ | |
191 | enum ugll_insert_mode | |
192 | { | |
193 | /* Don't insert any breakpoint locations into the inferior, only | |
194 | remove already-inserted locations that no longer should be | |
195 | inserted. Functions that delete a breakpoint or breakpoints | |
196 | should specify this mode, so that deleting a breakpoint doesn't | |
197 | have the side effect of inserting the locations of other | |
198 | breakpoints that are marked not-inserted, but should_be_inserted | |
199 | returns true on them. | |
200 | ||
201 | This behavior is useful is situations close to tear-down -- e.g., | |
202 | after an exec, while the target still has execution, but | |
203 | breakpoint shadows of the previous executable image should *NOT* | |
204 | be restored to the new image; or before detaching, where the | |
205 | target still has execution and wants to delete breakpoints from | |
206 | GDB's lists, and all breakpoints had already been removed from | |
207 | the inferior. */ | |
208 | UGLL_DONT_INSERT, | |
209 | ||
a25a5a45 PA |
210 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
211 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
212 | UGLL_MAY_INSERT, |
213 | ||
a25a5a45 PA |
214 | /* Insert locations now, irrespective of |
215 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
216 | stopped right now, and the user did "continue". We need to | |
217 | insert breakpoints _before_ resuming the target, but | |
218 | UGLL_MAY_INSERT wouldn't insert them, because | |
219 | breakpoints_should_be_inserted_now returns false at that point, | |
220 | as no thread is running yet. */ | |
04086b45 | 221 | UGLL_INSERT |
44702360 PA |
222 | }; |
223 | ||
224 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 225 | |
44702360 | 226 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 227 | |
d77f58be | 228 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
229 | |
230 | static void insert_breakpoint_locations (void); | |
a5606eee | 231 | |
0b39b52e | 232 | static void trace_pass_command (const char *, int); |
1042e4c0 | 233 | |
558a9d82 YQ |
234 | static void set_tracepoint_count (int num); |
235 | ||
9c06b0b4 TJB |
236 | static int is_masked_watchpoint (const struct breakpoint *b); |
237 | ||
b775012e LM |
238 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
239 | ||
983af33b SDJ |
240 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
241 | otherwise. */ | |
242 | ||
243 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 244 | |
2060206e PA |
245 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
246 | that are implemented on top of software or hardware breakpoints | |
247 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
248 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
249 | ||
250 | /* Internal breakpoints class type. */ | |
06edf0c0 | 251 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
252 | |
253 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
254 | static struct breakpoint_ops momentary_breakpoint_ops; |
255 | ||
2060206e PA |
256 | /* The breakpoint_ops structure to be used in regular user created |
257 | breakpoints. */ | |
258 | struct breakpoint_ops bkpt_breakpoint_ops; | |
259 | ||
55aa24fb SDJ |
260 | /* Breakpoints set on probes. */ |
261 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
262 | ||
e7e0cddf | 263 | /* Dynamic printf class type. */ |
c5867ab6 | 264 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 265 | |
d3ce09f5 SS |
266 | /* The style in which to perform a dynamic printf. This is a user |
267 | option because different output options have different tradeoffs; | |
268 | if GDB does the printing, there is better error handling if there | |
269 | is a problem with any of the arguments, but using an inferior | |
270 | function lets you have special-purpose printers and sending of | |
271 | output to the same place as compiled-in print functions. */ | |
272 | ||
273 | static const char dprintf_style_gdb[] = "gdb"; | |
274 | static const char dprintf_style_call[] = "call"; | |
275 | static const char dprintf_style_agent[] = "agent"; | |
276 | static const char *const dprintf_style_enums[] = { | |
277 | dprintf_style_gdb, | |
278 | dprintf_style_call, | |
279 | dprintf_style_agent, | |
280 | NULL | |
281 | }; | |
282 | static const char *dprintf_style = dprintf_style_gdb; | |
283 | ||
284 | /* The function to use for dynamic printf if the preferred style is to | |
285 | call into the inferior. The value is simply a string that is | |
286 | copied into the command, so it can be anything that GDB can | |
287 | evaluate to a callable address, not necessarily a function name. */ | |
288 | ||
bde6261a | 289 | static char *dprintf_function; |
d3ce09f5 SS |
290 | |
291 | /* The channel to use for dynamic printf if the preferred style is to | |
292 | call into the inferior; if a nonempty string, it will be passed to | |
293 | the call as the first argument, with the format string as the | |
294 | second. As with the dprintf function, this can be anything that | |
295 | GDB knows how to evaluate, so in addition to common choices like | |
296 | "stderr", this could be an app-specific expression like | |
297 | "mystreams[curlogger]". */ | |
298 | ||
bde6261a | 299 | static char *dprintf_channel; |
d3ce09f5 SS |
300 | |
301 | /* True if dprintf commands should continue to operate even if GDB | |
302 | has disconnected. */ | |
303 | static int disconnected_dprintf = 1; | |
304 | ||
5cea2a26 PA |
305 | struct command_line * |
306 | breakpoint_commands (struct breakpoint *b) | |
307 | { | |
d1b0a7bf | 308 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 309 | } |
3daf8fe5 | 310 | |
f3b1572e PA |
311 | /* Flag indicating that a command has proceeded the inferior past the |
312 | current breakpoint. */ | |
313 | ||
314 | static int breakpoint_proceeded; | |
315 | ||
956a9fb9 | 316 | const char * |
2cec12e5 AR |
317 | bpdisp_text (enum bpdisp disp) |
318 | { | |
4a64f543 MS |
319 | /* NOTE: the following values are a part of MI protocol and |
320 | represent values of 'disp' field returned when inferior stops at | |
321 | a breakpoint. */ | |
bc043ef3 | 322 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 323 | |
2cec12e5 AR |
324 | return bpdisps[(int) disp]; |
325 | } | |
c906108c | 326 | |
4a64f543 | 327 | /* Prototypes for exported functions. */ |
c906108c | 328 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 329 | if such is available. */ |
c906108c SS |
330 | static int can_use_hw_watchpoints; |
331 | ||
920d2a44 AC |
332 | static void |
333 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
334 | struct cmd_list_element *c, | |
335 | const char *value) | |
336 | { | |
3e43a32a MS |
337 | fprintf_filtered (file, |
338 | _("Debugger's willingness to use " | |
339 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
340 | value); |
341 | } | |
342 | ||
fa8d40ab JJ |
343 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
344 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 345 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
346 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
347 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
348 | static void |
349 | show_pending_break_support (struct ui_file *file, int from_tty, | |
350 | struct cmd_list_element *c, | |
351 | const char *value) | |
352 | { | |
3e43a32a MS |
353 | fprintf_filtered (file, |
354 | _("Debugger's behavior regarding " | |
355 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
356 | value); |
357 | } | |
fa8d40ab | 358 | |
765dc015 | 359 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 360 | set with "break" but falling in read-only memory. |
765dc015 VP |
361 | If 0, gdb will warn about such breakpoints, but won't automatically |
362 | use hardware breakpoints. */ | |
363 | static int automatic_hardware_breakpoints; | |
364 | static void | |
365 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
366 | struct cmd_list_element *c, | |
367 | const char *value) | |
368 | { | |
3e43a32a MS |
369 | fprintf_filtered (file, |
370 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
371 | value); |
372 | } | |
373 | ||
a25a5a45 PA |
374 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
375 | stopped, and immediately inserts any new breakpoints as soon as | |
376 | they're created. If off (default), GDB keeps breakpoints off of | |
377 | the target as long as possible. That is, it delays inserting | |
378 | breakpoints until the next resume, and removes them again when the | |
379 | target fully stops. This is a bit safer in case GDB crashes while | |
380 | processing user input. */ | |
381 | static int always_inserted_mode = 0; | |
72d0e2c5 | 382 | |
33e5cbd6 | 383 | static void |
74960c60 | 384 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 385 | struct cmd_list_element *c, const char *value) |
74960c60 | 386 | { |
a25a5a45 PA |
387 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
388 | value); | |
74960c60 VP |
389 | } |
390 | ||
b57bacec PA |
391 | /* See breakpoint.h. */ |
392 | ||
33e5cbd6 | 393 | int |
a25a5a45 | 394 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 395 | { |
a25a5a45 PA |
396 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
397 | { | |
398 | /* If breakpoints are global, they should be inserted even if no | |
399 | thread under gdb's control is running, or even if there are | |
400 | no threads under GDB's control yet. */ | |
401 | return 1; | |
402 | } | |
403 | else if (target_has_execution) | |
404 | { | |
a25a5a45 PA |
405 | if (always_inserted_mode) |
406 | { | |
407 | /* The user wants breakpoints inserted even if all threads | |
408 | are stopped. */ | |
409 | return 1; | |
410 | } | |
411 | ||
b57bacec PA |
412 | if (threads_are_executing ()) |
413 | return 1; | |
372316f1 PA |
414 | |
415 | /* Don't remove breakpoints yet if, even though all threads are | |
416 | stopped, we still have events to process. */ | |
08036331 | 417 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
418 | if (tp->resumed |
419 | && tp->suspend.waitstatus_pending_p) | |
420 | return 1; | |
a25a5a45 PA |
421 | } |
422 | return 0; | |
33e5cbd6 | 423 | } |
765dc015 | 424 | |
b775012e LM |
425 | static const char condition_evaluation_both[] = "host or target"; |
426 | ||
427 | /* Modes for breakpoint condition evaluation. */ | |
428 | static const char condition_evaluation_auto[] = "auto"; | |
429 | static const char condition_evaluation_host[] = "host"; | |
430 | static const char condition_evaluation_target[] = "target"; | |
431 | static const char *const condition_evaluation_enums[] = { | |
432 | condition_evaluation_auto, | |
433 | condition_evaluation_host, | |
434 | condition_evaluation_target, | |
435 | NULL | |
436 | }; | |
437 | ||
438 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
439 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
440 | ||
441 | /* Global that we use to display information to the user (gets its value from | |
442 | condition_evaluation_mode_1. */ | |
443 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
444 | ||
445 | /* Translate a condition evaluation mode MODE into either "host" | |
446 | or "target". This is used mostly to translate from "auto" to the | |
447 | real setting that is being used. It returns the translated | |
448 | evaluation mode. */ | |
449 | ||
450 | static const char * | |
451 | translate_condition_evaluation_mode (const char *mode) | |
452 | { | |
453 | if (mode == condition_evaluation_auto) | |
454 | { | |
455 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
456 | return condition_evaluation_target; | |
457 | else | |
458 | return condition_evaluation_host; | |
459 | } | |
460 | else | |
461 | return mode; | |
462 | } | |
463 | ||
464 | /* Discovers what condition_evaluation_auto translates to. */ | |
465 | ||
466 | static const char * | |
467 | breakpoint_condition_evaluation_mode (void) | |
468 | { | |
469 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
470 | } | |
471 | ||
472 | /* Return true if GDB should evaluate breakpoint conditions or false | |
473 | otherwise. */ | |
474 | ||
475 | static int | |
476 | gdb_evaluates_breakpoint_condition_p (void) | |
477 | { | |
478 | const char *mode = breakpoint_condition_evaluation_mode (); | |
479 | ||
480 | return (mode == condition_evaluation_host); | |
481 | } | |
482 | ||
c906108c SS |
483 | /* Are we executing breakpoint commands? */ |
484 | static int executing_breakpoint_commands; | |
485 | ||
c02f5703 MS |
486 | /* Are overlay event breakpoints enabled? */ |
487 | static int overlay_events_enabled; | |
488 | ||
e09342b5 TJB |
489 | /* See description in breakpoint.h. */ |
490 | int target_exact_watchpoints = 0; | |
491 | ||
c906108c | 492 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 493 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 494 | current breakpoint. */ |
c906108c | 495 | |
5c44784c | 496 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 497 | |
5c44784c JM |
498 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
499 | for (B = breakpoint_chain; \ | |
500 | B ? (TMP=B->next, 1): 0; \ | |
501 | B = TMP) | |
c906108c | 502 | |
4a64f543 MS |
503 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
504 | not provided so update_global_location_list must not be called | |
505 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 506 | |
876fa593 | 507 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
508 | for (BP_TMP = bp_locations; \ |
509 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 510 | BP_TMP++) |
7cc221ef | 511 | |
b775012e LM |
512 | /* Iterates through locations with address ADDRESS for the currently selected |
513 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
514 | to where the loop should start from. | |
515 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
516 | appropriate location to start with. */ | |
517 | ||
518 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
519 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
520 | BP_LOCP_TMP = BP_LOCP_START; \ | |
521 | BP_LOCP_START \ | |
f5336ca5 | 522 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
523 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
524 | BP_LOCP_TMP++) | |
525 | ||
1042e4c0 SS |
526 | /* Iterator for tracepoints only. */ |
527 | ||
528 | #define ALL_TRACEPOINTS(B) \ | |
529 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 530 | if (is_tracepoint (B)) |
1042e4c0 | 531 | |
7cc221ef | 532 | /* Chains of all breakpoints defined. */ |
c906108c SS |
533 | |
534 | struct breakpoint *breakpoint_chain; | |
535 | ||
f5336ca5 | 536 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 537 | |
f5336ca5 | 538 | static struct bp_location **bp_locations; |
876fa593 | 539 | |
f5336ca5 | 540 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 541 | |
f5336ca5 | 542 | static unsigned bp_locations_count; |
876fa593 | 543 | |
4a64f543 | 544 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 545 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 546 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 547 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 548 | an address you need to read. */ |
876fa593 | 549 | |
f5336ca5 | 550 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 551 | |
4a64f543 MS |
552 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
553 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
554 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
555 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 556 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 557 | |
f5336ca5 | 558 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 559 | |
4a64f543 | 560 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
561 | from the bp_locations array, but for which a hit may still be |
562 | reported by a target. */ | |
1123588c | 563 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 564 | |
c906108c SS |
565 | /* Number of last breakpoint made. */ |
566 | ||
95a42b64 TT |
567 | static int breakpoint_count; |
568 | ||
86b17b60 PA |
569 | /* The value of `breakpoint_count' before the last command that |
570 | created breakpoints. If the last (break-like) command created more | |
571 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
572 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
573 | static int prev_breakpoint_count; | |
c906108c | 574 | |
1042e4c0 SS |
575 | /* Number of last tracepoint made. */ |
576 | ||
95a42b64 | 577 | static int tracepoint_count; |
1042e4c0 | 578 | |
6149aea9 PA |
579 | static struct cmd_list_element *breakpoint_set_cmdlist; |
580 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 581 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 582 | |
badd37ce SDJ |
583 | /* See declaration at breakpoint.h. */ |
584 | ||
585 | struct breakpoint * | |
586 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
587 | void *user_data) | |
588 | { | |
589 | struct breakpoint *b = NULL; | |
590 | ||
591 | ALL_BREAKPOINTS (b) | |
592 | { | |
593 | if (func (b, user_data) != 0) | |
594 | break; | |
595 | } | |
596 | ||
597 | return b; | |
598 | } | |
599 | ||
468d015d JJ |
600 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
601 | static int | |
602 | breakpoint_enabled (struct breakpoint *b) | |
603 | { | |
0d381245 | 604 | return (b->enable_state == bp_enabled); |
468d015d JJ |
605 | } |
606 | ||
c906108c SS |
607 | /* Set breakpoint count to NUM. */ |
608 | ||
95a42b64 | 609 | static void |
fba45db2 | 610 | set_breakpoint_count (int num) |
c906108c | 611 | { |
86b17b60 | 612 | prev_breakpoint_count = breakpoint_count; |
c906108c | 613 | breakpoint_count = num; |
4fa62494 | 614 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
615 | } |
616 | ||
86b17b60 PA |
617 | /* Used by `start_rbreak_breakpoints' below, to record the current |
618 | breakpoint count before "rbreak" creates any breakpoint. */ | |
619 | static int rbreak_start_breakpoint_count; | |
620 | ||
95a42b64 TT |
621 | /* Called at the start an "rbreak" command to record the first |
622 | breakpoint made. */ | |
86b17b60 | 623 | |
c80049d3 | 624 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 625 | { |
86b17b60 | 626 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
627 | } |
628 | ||
629 | /* Called at the end of an "rbreak" command to record the last | |
630 | breakpoint made. */ | |
86b17b60 | 631 | |
c80049d3 | 632 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 633 | { |
86b17b60 | 634 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
635 | } |
636 | ||
4a64f543 | 637 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
638 | |
639 | void | |
fba45db2 | 640 | clear_breakpoint_hit_counts (void) |
c906108c SS |
641 | { |
642 | struct breakpoint *b; | |
643 | ||
644 | ALL_BREAKPOINTS (b) | |
645 | b->hit_count = 0; | |
646 | } | |
647 | ||
c906108c | 648 | \f |
48cb2d85 VP |
649 | /* Return the breakpoint with the specified number, or NULL |
650 | if the number does not refer to an existing breakpoint. */ | |
651 | ||
652 | struct breakpoint * | |
653 | get_breakpoint (int num) | |
654 | { | |
655 | struct breakpoint *b; | |
656 | ||
657 | ALL_BREAKPOINTS (b) | |
658 | if (b->number == num) | |
659 | return b; | |
660 | ||
661 | return NULL; | |
662 | } | |
5c44784c | 663 | |
c906108c | 664 | \f |
adc36818 | 665 | |
b775012e LM |
666 | /* Mark locations as "conditions have changed" in case the target supports |
667 | evaluating conditions on its side. */ | |
668 | ||
669 | static void | |
670 | mark_breakpoint_modified (struct breakpoint *b) | |
671 | { | |
672 | struct bp_location *loc; | |
673 | ||
674 | /* This is only meaningful if the target is | |
675 | evaluating conditions and if the user has | |
676 | opted for condition evaluation on the target's | |
677 | side. */ | |
678 | if (gdb_evaluates_breakpoint_condition_p () | |
679 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
680 | return; | |
681 | ||
682 | if (!is_breakpoint (b)) | |
683 | return; | |
684 | ||
685 | for (loc = b->loc; loc; loc = loc->next) | |
686 | loc->condition_changed = condition_modified; | |
687 | } | |
688 | ||
689 | /* Mark location as "conditions have changed" in case the target supports | |
690 | evaluating conditions on its side. */ | |
691 | ||
692 | static void | |
693 | mark_breakpoint_location_modified (struct bp_location *loc) | |
694 | { | |
695 | /* This is only meaningful if the target is | |
696 | evaluating conditions and if the user has | |
697 | opted for condition evaluation on the target's | |
698 | side. */ | |
699 | if (gdb_evaluates_breakpoint_condition_p () | |
700 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
701 | ||
702 | return; | |
703 | ||
704 | if (!is_breakpoint (loc->owner)) | |
705 | return; | |
706 | ||
707 | loc->condition_changed = condition_modified; | |
708 | } | |
709 | ||
710 | /* Sets the condition-evaluation mode using the static global | |
711 | condition_evaluation_mode. */ | |
712 | ||
713 | static void | |
eb4c3f4a | 714 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
715 | struct cmd_list_element *c) |
716 | { | |
b775012e LM |
717 | const char *old_mode, *new_mode; |
718 | ||
719 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
720 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
721 | { | |
722 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
723 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
724 | "Using host evaluation mode instead.")); | |
725 | return; | |
726 | } | |
727 | ||
728 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
729 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
730 | ||
abf1152a JK |
731 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
732 | settings was "auto". */ | |
733 | condition_evaluation_mode = condition_evaluation_mode_1; | |
734 | ||
b775012e LM |
735 | /* Only update the mode if the user picked a different one. */ |
736 | if (new_mode != old_mode) | |
737 | { | |
738 | struct bp_location *loc, **loc_tmp; | |
739 | /* If the user switched to a different evaluation mode, we | |
740 | need to synch the changes with the target as follows: | |
741 | ||
742 | "host" -> "target": Send all (valid) conditions to the target. | |
743 | "target" -> "host": Remove all the conditions from the target. | |
744 | */ | |
745 | ||
b775012e LM |
746 | if (new_mode == condition_evaluation_target) |
747 | { | |
748 | /* Mark everything modified and synch conditions with the | |
749 | target. */ | |
750 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
751 | mark_breakpoint_location_modified (loc); | |
752 | } | |
753 | else | |
754 | { | |
755 | /* Manually mark non-duplicate locations to synch conditions | |
756 | with the target. We do this to remove all the conditions the | |
757 | target knows about. */ | |
758 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
759 | if (is_breakpoint (loc->owner) && loc->inserted) | |
760 | loc->needs_update = 1; | |
761 | } | |
762 | ||
763 | /* Do the update. */ | |
44702360 | 764 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
765 | } |
766 | ||
767 | return; | |
768 | } | |
769 | ||
770 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
771 | what "auto" is translating to. */ | |
772 | ||
773 | static void | |
774 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
775 | struct cmd_list_element *c, const char *value) | |
776 | { | |
777 | if (condition_evaluation_mode == condition_evaluation_auto) | |
778 | fprintf_filtered (file, | |
779 | _("Breakpoint condition evaluation " | |
780 | "mode is %s (currently %s).\n"), | |
781 | value, | |
782 | breakpoint_condition_evaluation_mode ()); | |
783 | else | |
784 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
785 | value); | |
786 | } | |
787 | ||
788 | /* A comparison function for bp_location AP and BP that is used by | |
789 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 790 | the more general bp_locations_compare function. */ |
b775012e LM |
791 | |
792 | static int | |
f5336ca5 | 793 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 794 | { |
9a3c8263 SM |
795 | const struct bp_location *a = *(const struct bp_location **) ap; |
796 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
797 | |
798 | if (a->address == b->address) | |
799 | return 0; | |
800 | else | |
801 | return ((a->address > b->address) - (a->address < b->address)); | |
802 | } | |
803 | ||
804 | /* Helper function to skip all bp_locations with addresses | |
805 | less than ADDRESS. It returns the first bp_location that | |
806 | is greater than or equal to ADDRESS. If none is found, just | |
807 | return NULL. */ | |
808 | ||
809 | static struct bp_location ** | |
810 | get_first_locp_gte_addr (CORE_ADDR address) | |
811 | { | |
812 | struct bp_location dummy_loc; | |
813 | struct bp_location *dummy_locp = &dummy_loc; | |
814 | struct bp_location **locp_found = NULL; | |
815 | ||
816 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
817 | dummy_loc.address = address; |
818 | ||
819 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 820 | locp_found = ((struct bp_location **) |
f5336ca5 | 821 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 822 | sizeof (struct bp_location **), |
f5336ca5 | 823 | bp_locations_compare_addrs)); |
b775012e LM |
824 | |
825 | /* Nothing was found, nothing left to do. */ | |
826 | if (locp_found == NULL) | |
827 | return NULL; | |
828 | ||
829 | /* We may have found a location that is at ADDRESS but is not the first in the | |
830 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 831 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
832 | && (*(locp_found - 1))->address == address) |
833 | locp_found--; | |
834 | ||
835 | return locp_found; | |
836 | } | |
837 | ||
adc36818 | 838 | void |
7a26bd4d | 839 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
840 | int from_tty) |
841 | { | |
3a5c3e22 PA |
842 | xfree (b->cond_string); |
843 | b->cond_string = NULL; | |
adc36818 | 844 | |
3a5c3e22 | 845 | if (is_watchpoint (b)) |
adc36818 | 846 | { |
3a5c3e22 PA |
847 | struct watchpoint *w = (struct watchpoint *) b; |
848 | ||
4d01a485 | 849 | w->cond_exp.reset (); |
3a5c3e22 PA |
850 | } |
851 | else | |
852 | { | |
853 | struct bp_location *loc; | |
854 | ||
855 | for (loc = b->loc; loc; loc = loc->next) | |
856 | { | |
4d01a485 | 857 | loc->cond.reset (); |
b775012e LM |
858 | |
859 | /* No need to free the condition agent expression | |
860 | bytecode (if we have one). We will handle this | |
861 | when we go through update_global_location_list. */ | |
3a5c3e22 | 862 | } |
adc36818 | 863 | } |
adc36818 PM |
864 | |
865 | if (*exp == 0) | |
866 | { | |
867 | if (from_tty) | |
868 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
869 | } | |
870 | else | |
871 | { | |
bbc13ae3 | 872 | const char *arg = exp; |
cc59ec59 | 873 | |
adc36818 PM |
874 | /* I don't know if it matters whether this is the string the user |
875 | typed in or the decompiled expression. */ | |
876 | b->cond_string = xstrdup (arg); | |
877 | b->condition_not_parsed = 0; | |
878 | ||
879 | if (is_watchpoint (b)) | |
880 | { | |
3a5c3e22 PA |
881 | struct watchpoint *w = (struct watchpoint *) b; |
882 | ||
699bd4cf | 883 | innermost_block_tracker tracker; |
adc36818 | 884 | arg = exp; |
699bd4cf | 885 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
adc36818 PM |
886 | if (*arg) |
887 | error (_("Junk at end of expression")); | |
699bd4cf | 888 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
889 | } |
890 | else | |
891 | { | |
3a5c3e22 PA |
892 | struct bp_location *loc; |
893 | ||
adc36818 PM |
894 | for (loc = b->loc; loc; loc = loc->next) |
895 | { | |
896 | arg = exp; | |
897 | loc->cond = | |
1bb9788d TT |
898 | parse_exp_1 (&arg, loc->address, |
899 | block_for_pc (loc->address), 0); | |
adc36818 PM |
900 | if (*arg) |
901 | error (_("Junk at end of expression")); | |
902 | } | |
903 | } | |
904 | } | |
b775012e LM |
905 | mark_breakpoint_modified (b); |
906 | ||
76727919 | 907 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
908 | } |
909 | ||
d55637df TT |
910 | /* Completion for the "condition" command. */ |
911 | ||
eb3ff9a5 | 912 | static void |
6f937416 | 913 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 914 | completion_tracker &tracker, |
6f937416 | 915 | const char *text, const char *word) |
d55637df | 916 | { |
6f937416 | 917 | const char *space; |
d55637df | 918 | |
f1735a53 TT |
919 | text = skip_spaces (text); |
920 | space = skip_to_space (text); | |
d55637df TT |
921 | if (*space == '\0') |
922 | { | |
923 | int len; | |
924 | struct breakpoint *b; | |
d55637df TT |
925 | |
926 | if (text[0] == '$') | |
927 | { | |
928 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
929 | if (!isdigit (text[1])) |
930 | complete_internalvar (tracker, &text[1]); | |
931 | return; | |
d55637df TT |
932 | } |
933 | ||
934 | /* We're completing the breakpoint number. */ | |
935 | len = strlen (text); | |
936 | ||
937 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
938 | { |
939 | char number[50]; | |
940 | ||
941 | xsnprintf (number, sizeof (number), "%d", b->number); | |
942 | ||
943 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 944 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 945 | } |
d55637df | 946 | |
eb3ff9a5 | 947 | return; |
d55637df TT |
948 | } |
949 | ||
950 | /* We're completing the expression part. */ | |
f1735a53 | 951 | text = skip_spaces (space); |
eb3ff9a5 | 952 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
953 | } |
954 | ||
c906108c SS |
955 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
956 | ||
957 | static void | |
0b39b52e | 958 | condition_command (const char *arg, int from_tty) |
c906108c | 959 | { |
52f0bd74 | 960 | struct breakpoint *b; |
0b39b52e | 961 | const char *p; |
52f0bd74 | 962 | int bnum; |
c906108c SS |
963 | |
964 | if (arg == 0) | |
e2e0b3e5 | 965 | error_no_arg (_("breakpoint number")); |
c906108c SS |
966 | |
967 | p = arg; | |
968 | bnum = get_number (&p); | |
5c44784c | 969 | if (bnum == 0) |
8a3fe4f8 | 970 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
971 | |
972 | ALL_BREAKPOINTS (b) | |
973 | if (b->number == bnum) | |
2f069f6f | 974 | { |
6dddc817 DE |
975 | /* Check if this breakpoint has a "stop" method implemented in an |
976 | extension language. This method and conditions entered into GDB | |
977 | from the CLI are mutually exclusive. */ | |
978 | const struct extension_language_defn *extlang | |
979 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
980 | ||
981 | if (extlang != NULL) | |
982 | { | |
983 | error (_("Only one stop condition allowed. There is currently" | |
984 | " a %s stop condition defined for this breakpoint."), | |
985 | ext_lang_capitalized_name (extlang)); | |
986 | } | |
2566ad2d | 987 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
988 | |
989 | if (is_breakpoint (b)) | |
44702360 | 990 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 991 | |
2f069f6f JB |
992 | return; |
993 | } | |
c906108c | 994 | |
8a3fe4f8 | 995 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
996 | } |
997 | ||
a7bdde9e VP |
998 | /* Check that COMMAND do not contain commands that are suitable |
999 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1000 | Throw if any such commands is found. */ |
1001 | ||
a7bdde9e VP |
1002 | static void |
1003 | check_no_tracepoint_commands (struct command_line *commands) | |
1004 | { | |
1005 | struct command_line *c; | |
cc59ec59 | 1006 | |
a7bdde9e VP |
1007 | for (c = commands; c; c = c->next) |
1008 | { | |
a7bdde9e | 1009 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1010 | error (_("The 'while-stepping' command can " |
1011 | "only be used for tracepoints")); | |
a7bdde9e | 1012 | |
12973681 TT |
1013 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1014 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1015 | |
1016 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1017 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1018 | command directly. */ |
1019 | if (strstr (c->line, "collect ") == c->line) | |
1020 | error (_("The 'collect' command can only be used for tracepoints")); | |
1021 | ||
51661e93 VP |
1022 | if (strstr (c->line, "teval ") == c->line) |
1023 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1024 | } |
1025 | } | |
1026 | ||
c1fc2657 | 1027 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1028 | { |
c1fc2657 | 1029 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1030 | }; |
1031 | ||
d77f58be SS |
1032 | /* Encapsulate tests for different types of tracepoints. */ |
1033 | ||
3b0871f4 SM |
1034 | static bool |
1035 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1036 | { |
1037 | return (type == bp_tracepoint | |
1038 | || type == bp_fast_tracepoint | |
1039 | || type == bp_static_tracepoint); | |
1040 | } | |
1041 | ||
3b0871f4 SM |
1042 | static bool |
1043 | is_longjmp_type (bptype type) | |
1044 | { | |
1045 | return type == bp_longjmp || type == bp_exception; | |
1046 | } | |
1047 | ||
a7bdde9e | 1048 | int |
d77f58be | 1049 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1050 | { |
d9b3f62e | 1051 | return is_tracepoint_type (b->type); |
a7bdde9e | 1052 | } |
d9b3f62e | 1053 | |
a5e364af SM |
1054 | /* Factory function to create an appropriate instance of breakpoint given |
1055 | TYPE. */ | |
1056 | ||
1057 | static std::unique_ptr<breakpoint> | |
1058 | new_breakpoint_from_type (bptype type) | |
1059 | { | |
1060 | breakpoint *b; | |
1061 | ||
1062 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1063 | b = new tracepoint (); |
3b0871f4 | 1064 | else if (is_longjmp_type (type)) |
c1fc2657 | 1065 | b = new longjmp_breakpoint (); |
a5e364af SM |
1066 | else |
1067 | b = new breakpoint (); | |
1068 | ||
1069 | return std::unique_ptr<breakpoint> (b); | |
1070 | } | |
1071 | ||
e5dd4106 | 1072 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1073 | breakpoint. This function will throw an exception if a problem is |
1074 | found. */ | |
48cb2d85 | 1075 | |
95a42b64 TT |
1076 | static void |
1077 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1078 | struct command_line *commands) | |
48cb2d85 | 1079 | { |
d77f58be | 1080 | if (is_tracepoint (b)) |
a7bdde9e | 1081 | { |
c9a6ce02 | 1082 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1083 | struct command_line *c; |
1084 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1085 | |
1086 | /* Reset the while-stepping step count. The previous commands | |
1087 | might have included a while-stepping action, while the new | |
1088 | ones might not. */ | |
1089 | t->step_count = 0; | |
1090 | ||
1091 | /* We need to verify that each top-level element of commands is | |
1092 | valid for tracepoints, that there's at most one | |
1093 | while-stepping element, and that the while-stepping's body | |
1094 | has valid tracing commands excluding nested while-stepping. | |
1095 | We also need to validate the tracepoint action line in the | |
1096 | context of the tracepoint --- validate_actionline actually | |
1097 | has side effects, like setting the tracepoint's | |
1098 | while-stepping STEP_COUNT, in addition to checking if the | |
1099 | collect/teval actions parse and make sense in the | |
1100 | tracepoint's context. */ | |
a7bdde9e VP |
1101 | for (c = commands; c; c = c->next) |
1102 | { | |
a7bdde9e VP |
1103 | if (c->control_type == while_stepping_control) |
1104 | { | |
1105 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1106 | error (_("The 'while-stepping' command " |
1107 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1108 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1109 | error (_("The 'while-stepping' command " |
1110 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1111 | |
1112 | if (while_stepping) | |
3e43a32a MS |
1113 | error (_("The 'while-stepping' command " |
1114 | "can be used only once")); | |
a7bdde9e VP |
1115 | else |
1116 | while_stepping = c; | |
1117 | } | |
c9a6ce02 PA |
1118 | |
1119 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1120 | } |
1121 | if (while_stepping) | |
1122 | { | |
1123 | struct command_line *c2; | |
1124 | ||
12973681 TT |
1125 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1126 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1127 | for (; c2; c2 = c2->next) |
1128 | { | |
a7bdde9e VP |
1129 | if (c2->control_type == while_stepping_control) |
1130 | error (_("The 'while-stepping' command cannot be nested")); | |
1131 | } | |
1132 | } | |
1133 | } | |
1134 | else | |
1135 | { | |
1136 | check_no_tracepoint_commands (commands); | |
1137 | } | |
95a42b64 TT |
1138 | } |
1139 | ||
0fb4aa4b PA |
1140 | /* Return a vector of all the static tracepoints set at ADDR. The |
1141 | caller is responsible for releasing the vector. */ | |
1142 | ||
f51e0e20 | 1143 | std::vector<breakpoint *> |
0fb4aa4b PA |
1144 | static_tracepoints_here (CORE_ADDR addr) |
1145 | { | |
1146 | struct breakpoint *b; | |
f51e0e20 | 1147 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1148 | struct bp_location *loc; |
1149 | ||
1150 | ALL_BREAKPOINTS (b) | |
1151 | if (b->type == bp_static_tracepoint) | |
1152 | { | |
1153 | for (loc = b->loc; loc; loc = loc->next) | |
1154 | if (loc->address == addr) | |
f51e0e20 | 1155 | found.push_back (b); |
0fb4aa4b PA |
1156 | } |
1157 | ||
1158 | return found; | |
1159 | } | |
1160 | ||
95a42b64 | 1161 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1162 | validate that only allowed commands are included. */ |
95a42b64 TT |
1163 | |
1164 | void | |
4a64f543 | 1165 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1166 | counted_command_line &&commands) |
95a42b64 | 1167 | { |
93921405 | 1168 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1169 | |
d1b0a7bf | 1170 | b->commands = std::move (commands); |
76727919 | 1171 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1172 | } |
1173 | ||
45a43567 TT |
1174 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1175 | is not the same as the "silent" that may appear in the breakpoint's | |
1176 | commands. */ | |
1177 | ||
1178 | void | |
1179 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1180 | { | |
1181 | int old_silent = b->silent; | |
1182 | ||
1183 | b->silent = silent; | |
1184 | if (old_silent != silent) | |
76727919 | 1185 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1186 | } |
1187 | ||
1188 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1189 | breakpoint work for any thread. */ | |
1190 | ||
1191 | void | |
1192 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1193 | { | |
1194 | int old_thread = b->thread; | |
1195 | ||
1196 | b->thread = thread; | |
1197 | if (old_thread != thread) | |
76727919 | 1198 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1199 | } |
1200 | ||
1201 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1202 | breakpoint work for any task. */ | |
1203 | ||
1204 | void | |
1205 | breakpoint_set_task (struct breakpoint *b, int task) | |
1206 | { | |
1207 | int old_task = b->task; | |
1208 | ||
1209 | b->task = task; | |
1210 | if (old_task != task) | |
76727919 | 1211 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1212 | } |
1213 | ||
95a42b64 | 1214 | static void |
896b6bda | 1215 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1216 | struct command_line *control) |
95a42b64 | 1217 | { |
d1b0a7bf | 1218 | counted_command_line cmd; |
999700cd PW |
1219 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1220 | NULL after the call to read_command_lines if the user provides an empty | |
1221 | list of command by just typing "end". */ | |
1222 | bool cmd_read = false; | |
95a42b64 | 1223 | |
896b6bda PA |
1224 | std::string new_arg; |
1225 | ||
95a42b64 TT |
1226 | if (arg == NULL || !*arg) |
1227 | { | |
86b17b60 | 1228 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1229 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1230 | breakpoint_count); | |
95a42b64 | 1231 | else if (breakpoint_count > 0) |
896b6bda | 1232 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1233 | arg = new_arg.c_str (); |
1234 | } | |
1235 | ||
1236 | map_breakpoint_numbers | |
1237 | (arg, [&] (breakpoint *b) | |
1238 | { | |
999700cd | 1239 | if (!cmd_read) |
48649e1b | 1240 | { |
999700cd | 1241 | gdb_assert (cmd == NULL); |
48649e1b | 1242 | if (control != NULL) |
12973681 | 1243 | cmd = control->body_list_0; |
48649e1b TT |
1244 | else |
1245 | { | |
81b1e71c TT |
1246 | std::string str |
1247 | = string_printf (_("Type commands for breakpoint(s) " | |
1248 | "%s, one per line."), | |
1249 | arg); | |
48649e1b | 1250 | |
60b3cef2 TT |
1251 | auto do_validate = [=] (const char *line) |
1252 | { | |
1253 | validate_actionline (line, b); | |
1254 | }; | |
1255 | gdb::function_view<void (const char *)> validator; | |
1256 | if (is_tracepoint (b)) | |
1257 | validator = do_validate; | |
1258 | ||
1259 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1260 | } |
999700cd | 1261 | cmd_read = true; |
48649e1b TT |
1262 | } |
1263 | ||
1264 | /* If a breakpoint was on the list more than once, we don't need to | |
1265 | do anything. */ | |
1266 | if (b->commands != cmd) | |
1267 | { | |
d1b0a7bf | 1268 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1269 | b->commands = cmd; |
76727919 | 1270 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1271 | } |
1272 | }); | |
95a42b64 TT |
1273 | } |
1274 | ||
1275 | static void | |
0b39b52e | 1276 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1277 | { |
1278 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1279 | } |
40c03ae8 EZ |
1280 | |
1281 | /* Like commands_command, but instead of reading the commands from | |
1282 | input stream, takes them from an already parsed command structure. | |
1283 | ||
1284 | This is used by cli-script.c to DTRT with breakpoint commands | |
1285 | that are part of if and while bodies. */ | |
1286 | enum command_control_type | |
896b6bda | 1287 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1288 | { |
95a42b64 TT |
1289 | commands_command_1 (arg, 0, cmd); |
1290 | return simple_control; | |
40c03ae8 | 1291 | } |
876fa593 JK |
1292 | |
1293 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1294 | ||
1295 | static int | |
1296 | bp_location_has_shadow (struct bp_location *bl) | |
1297 | { | |
1298 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1299 | return 0; | |
1300 | if (!bl->inserted) | |
1301 | return 0; | |
1302 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1303 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1304 | return 0; |
1305 | return 1; | |
1306 | } | |
1307 | ||
9d497a19 PA |
1308 | /* Update BUF, which is LEN bytes read from the target address |
1309 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1310 | contents. | |
1311 | ||
1312 | If READBUF is not NULL, this buffer must not overlap with the of | |
1313 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1314 | failed assertion internal error will be raised. */ | |
1315 | ||
1316 | static void | |
1317 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1318 | const gdb_byte *writebuf_org, | |
1319 | ULONGEST memaddr, LONGEST len, | |
1320 | struct bp_target_info *target_info, | |
1321 | struct gdbarch *gdbarch) | |
1322 | { | |
1323 | /* Now do full processing of the found relevant range of elements. */ | |
1324 | CORE_ADDR bp_addr = 0; | |
1325 | int bp_size = 0; | |
1326 | int bptoffset = 0; | |
1327 | ||
1328 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1329 | current_program_space->aspace, 0)) | |
1330 | { | |
1331 | /* The breakpoint is inserted in a different address space. */ | |
1332 | return; | |
1333 | } | |
1334 | ||
1335 | /* Addresses and length of the part of the breakpoint that | |
1336 | we need to copy. */ | |
1337 | bp_addr = target_info->placed_address; | |
1338 | bp_size = target_info->shadow_len; | |
1339 | ||
1340 | if (bp_addr + bp_size <= memaddr) | |
1341 | { | |
1342 | /* The breakpoint is entirely before the chunk of memory we are | |
1343 | reading. */ | |
1344 | return; | |
1345 | } | |
1346 | ||
1347 | if (bp_addr >= memaddr + len) | |
1348 | { | |
1349 | /* The breakpoint is entirely after the chunk of memory we are | |
1350 | reading. */ | |
1351 | return; | |
1352 | } | |
1353 | ||
1354 | /* Offset within shadow_contents. */ | |
1355 | if (bp_addr < memaddr) | |
1356 | { | |
1357 | /* Only copy the second part of the breakpoint. */ | |
1358 | bp_size -= memaddr - bp_addr; | |
1359 | bptoffset = memaddr - bp_addr; | |
1360 | bp_addr = memaddr; | |
1361 | } | |
1362 | ||
1363 | if (bp_addr + bp_size > memaddr + len) | |
1364 | { | |
1365 | /* Only copy the first part of the breakpoint. */ | |
1366 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1367 | } | |
1368 | ||
1369 | if (readbuf != NULL) | |
1370 | { | |
1371 | /* Verify that the readbuf buffer does not overlap with the | |
1372 | shadow_contents buffer. */ | |
1373 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1374 | || readbuf >= (target_info->shadow_contents | |
1375 | + target_info->shadow_len)); | |
1376 | ||
1377 | /* Update the read buffer with this inserted breakpoint's | |
1378 | shadow. */ | |
1379 | memcpy (readbuf + bp_addr - memaddr, | |
1380 | target_info->shadow_contents + bptoffset, bp_size); | |
1381 | } | |
1382 | else | |
1383 | { | |
1384 | const unsigned char *bp; | |
0d5ed153 MR |
1385 | CORE_ADDR addr = target_info->reqstd_address; |
1386 | int placed_size; | |
9d497a19 PA |
1387 | |
1388 | /* Update the shadow with what we want to write to memory. */ | |
1389 | memcpy (target_info->shadow_contents + bptoffset, | |
1390 | writebuf_org + bp_addr - memaddr, bp_size); | |
1391 | ||
1392 | /* Determine appropriate breakpoint contents and size for this | |
1393 | address. */ | |
0d5ed153 | 1394 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1395 | |
1396 | /* Update the final write buffer with this inserted | |
1397 | breakpoint's INSN. */ | |
1398 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1399 | } | |
1400 | } | |
1401 | ||
8defab1a | 1402 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1403 | by replacing any memory breakpoints with their shadowed contents. |
1404 | ||
35c63cd8 JB |
1405 | If READBUF is not NULL, this buffer must not overlap with any of |
1406 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1407 | a failed assertion internal error will be raised. | |
1408 | ||
876fa593 | 1409 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1410 | bl->address - bp_locations_placed_address_before_address_max |
1411 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1412 | The range we were requested to resolve shadows for is: |
1413 | memaddr ... memaddr + len | |
1414 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1415 | memaddr + len <= (bl->address |
f5336ca5 | 1416 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1417 | and: |
f5336ca5 | 1418 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1419 | |
8defab1a | 1420 | void |
f0ba3972 PA |
1421 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1422 | const gdb_byte *writebuf_org, | |
1423 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1424 | { |
4a64f543 MS |
1425 | /* Left boundary, right boundary and median element of our binary |
1426 | search. */ | |
876fa593 JK |
1427 | unsigned bc_l, bc_r, bc; |
1428 | ||
4a64f543 MS |
1429 | /* Find BC_L which is a leftmost element which may affect BUF |
1430 | content. It is safe to report lower value but a failure to | |
1431 | report higher one. */ | |
876fa593 JK |
1432 | |
1433 | bc_l = 0; | |
f5336ca5 | 1434 | bc_r = bp_locations_count; |
876fa593 JK |
1435 | while (bc_l + 1 < bc_r) |
1436 | { | |
35df4500 | 1437 | struct bp_location *bl; |
876fa593 JK |
1438 | |
1439 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1440 | bl = bp_locations[bc]; |
876fa593 | 1441 | |
4a64f543 MS |
1442 | /* Check first BL->ADDRESS will not overflow due to the added |
1443 | constant. Then advance the left boundary only if we are sure | |
1444 | the BC element can in no way affect the BUF content (MEMADDR | |
1445 | to MEMADDR + LEN range). | |
876fa593 | 1446 | |
f5336ca5 | 1447 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1448 | offset so that we cannot miss a breakpoint with its shadow |
1449 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1450 | |
f5336ca5 | 1451 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1452 | >= bl->address) |
f5336ca5 | 1453 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1454 | <= memaddr)) |
876fa593 JK |
1455 | bc_l = bc; |
1456 | else | |
1457 | bc_r = bc; | |
1458 | } | |
1459 | ||
128070bb PA |
1460 | /* Due to the binary search above, we need to make sure we pick the |
1461 | first location that's at BC_L's address. E.g., if there are | |
1462 | multiple locations at the same address, BC_L may end up pointing | |
1463 | at a duplicate location, and miss the "master"/"inserted" | |
1464 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1465 | B: | |
1466 | ||
1467 | L1@A, L2@A, L3@B, ... | |
1468 | ||
1469 | BC_L could end up pointing at location L2, while the "master" | |
1470 | location could be L1. Since the `loc->inserted' flag is only set | |
1471 | on "master" locations, we'd forget to restore the shadow of L1 | |
1472 | and L2. */ | |
1473 | while (bc_l > 0 | |
f5336ca5 | 1474 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1475 | bc_l--; |
1476 | ||
876fa593 JK |
1477 | /* Now do full processing of the found relevant range of elements. */ |
1478 | ||
f5336ca5 | 1479 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1480 | { |
f5336ca5 | 1481 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1482 | |
35df4500 TJB |
1483 | /* bp_location array has BL->OWNER always non-NULL. */ |
1484 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1485 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1486 | bl->owner->number); |
ffce0d52 | 1487 | |
e5dd4106 | 1488 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1489 | content. */ |
1490 | ||
f5336ca5 PA |
1491 | if (bl->address >= bp_locations_placed_address_before_address_max |
1492 | && memaddr + len <= (bl->address | |
1493 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1494 | break; |
1495 | ||
35df4500 | 1496 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1497 | continue; |
6c95b8df | 1498 | |
9d497a19 PA |
1499 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1500 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1501 | } | |
c906108c | 1502 | } |
9d497a19 | 1503 | |
c906108c | 1504 | \f |
c5aa993b | 1505 | |
b775012e LM |
1506 | /* Return true if BPT is either a software breakpoint or a hardware |
1507 | breakpoint. */ | |
1508 | ||
1509 | int | |
1510 | is_breakpoint (const struct breakpoint *bpt) | |
1511 | { | |
1512 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1513 | || bpt->type == bp_hardware_breakpoint |
1514 | || bpt->type == bp_dprintf); | |
b775012e LM |
1515 | } |
1516 | ||
60e1c644 PA |
1517 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1518 | ||
a5606eee | 1519 | static int |
d77f58be | 1520 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1521 | { |
1522 | return (bpt->type == bp_hardware_watchpoint | |
1523 | || bpt->type == bp_read_watchpoint | |
1524 | || bpt->type == bp_access_watchpoint); | |
1525 | } | |
7270d8f2 | 1526 | |
60e1c644 PA |
1527 | /* Return true if BPT is of any watchpoint kind, hardware or |
1528 | software. */ | |
1529 | ||
3a5c3e22 | 1530 | int |
d77f58be | 1531 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1532 | { |
1533 | return (is_hardware_watchpoint (bpt) | |
1534 | || bpt->type == bp_watchpoint); | |
1535 | } | |
1536 | ||
3a5c3e22 PA |
1537 | /* Returns true if the current thread and its running state are safe |
1538 | to evaluate or update watchpoint B. Watchpoints on local | |
1539 | expressions need to be evaluated in the context of the thread that | |
1540 | was current when the watchpoint was created, and, that thread needs | |
1541 | to be stopped to be able to select the correct frame context. | |
1542 | Watchpoints on global expressions can be evaluated on any thread, | |
1543 | and in any state. It is presently left to the target allowing | |
1544 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1545 | |
1546 | static int | |
3a5c3e22 | 1547 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1548 | { |
c1fc2657 | 1549 | return (b->pspace == current_program_space |
d7e15655 TT |
1550 | && (b->watchpoint_thread == null_ptid |
1551 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1552 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1553 | } |
1554 | ||
d0fb5eae JK |
1555 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1556 | associated bp_watchpoint_scope breakpoint. */ | |
1557 | ||
1558 | static void | |
3a5c3e22 | 1559 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1560 | { |
c1fc2657 | 1561 | if (w->related_breakpoint != w) |
d0fb5eae | 1562 | { |
c1fc2657 SM |
1563 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1564 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1565 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1566 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1567 | w->related_breakpoint = w; | |
d0fb5eae | 1568 | } |
c1fc2657 | 1569 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1570 | } |
1571 | ||
bb9d5f81 PP |
1572 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1573 | watchpoint W. */ | |
1574 | ||
1575 | static struct value * | |
1576 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1577 | { | |
1578 | struct value *bit_val; | |
1579 | ||
1580 | if (val == NULL) | |
1581 | return NULL; | |
1582 | ||
1583 | bit_val = allocate_value (value_type (val)); | |
1584 | ||
1585 | unpack_value_bitfield (bit_val, | |
1586 | w->val_bitpos, | |
1587 | w->val_bitsize, | |
1588 | value_contents_for_printing (val), | |
1589 | value_offset (val), | |
1590 | val); | |
1591 | ||
1592 | return bit_val; | |
1593 | } | |
1594 | ||
c6d81124 PA |
1595 | /* Allocate a dummy location and add it to B, which must be a software |
1596 | watchpoint. This is required because even if a software watchpoint | |
1597 | is not watching any memory, bpstat_stop_status requires a location | |
1598 | to be able to report stops. */ | |
1599 | ||
1600 | static void | |
1601 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1602 | struct program_space *pspace) | |
1603 | { | |
1604 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1605 | ||
1606 | b->loc = allocate_bp_location (b); | |
1607 | b->loc->pspace = pspace; | |
1608 | b->loc->address = -1; | |
1609 | b->loc->length = -1; | |
1610 | } | |
1611 | ||
1612 | /* Returns true if B is a software watchpoint that is not watching any | |
1613 | memory (e.g., "watch $pc"). */ | |
1614 | ||
1615 | static int | |
1616 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1617 | { | |
1618 | return (b->type == bp_watchpoint | |
1619 | && b->loc != NULL | |
1620 | && b->loc->next == NULL | |
1621 | && b->loc->address == -1 | |
1622 | && b->loc->length == -1); | |
1623 | } | |
1624 | ||
567e1b4e JB |
1625 | /* Assuming that B is a watchpoint: |
1626 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1627 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1628 | - Evaluate the condition if there is one, and store the result |
1629 | in b->loc->cond. | |
a5606eee VP |
1630 | - Update the list of values that must be watched in B->loc. |
1631 | ||
4a64f543 MS |
1632 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1633 | nothing. If this is local watchpoint that is out of scope, delete | |
1634 | it. | |
1635 | ||
1636 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1637 | removed + inserted on each stop here. Normal breakpoints must | |
1638 | never be removed because they might be missed by a running thread | |
1639 | when debugging in non-stop mode. On the other hand, hardware | |
1640 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1641 | to each LWP since they are stored in each LWP's hardware debug | |
1642 | registers. Therefore, such LWP must be stopped first in order to | |
1643 | be able to modify its hardware watchpoints. | |
1644 | ||
1645 | Hardware watchpoints must be reset exactly once after being | |
1646 | presented to the user. It cannot be done sooner, because it would | |
1647 | reset the data used to present the watchpoint hit to the user. And | |
1648 | it must not be done later because it could display the same single | |
1649 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1650 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1651 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1652 | not user-visible - its hit is suppressed if the memory content has | |
1653 | not changed. | |
1654 | ||
1655 | The following constraints influence the location where we can reset | |
1656 | hardware watchpoints: | |
1657 | ||
1658 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1659 | called several times when GDB stops. | |
1660 | ||
1661 | [linux] | |
1662 | * Multiple hardware watchpoints can be hit at the same time, | |
1663 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1664 | hit at a time as the reason for stopping, and all the other hits | |
1665 | are presented later, one after the other, each time the user | |
1666 | requests the execution to be resumed. Execution is not resumed | |
1667 | for the threads still having pending hit event stored in | |
1668 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1669 | the inferior on the first stop the thread hit event is kept being | |
1670 | reported from its cached value by linux_nat_stopped_data_address | |
1671 | until the real thread resume happens after the watchpoint gets | |
1672 | presented and thus its LWP_INFO->STATUS gets reset. | |
1673 | ||
1674 | Therefore the hardware watchpoint hit can get safely reset on the | |
1675 | watchpoint removal from inferior. */ | |
a79d3c27 | 1676 | |
b40ce68a | 1677 | static void |
3a5c3e22 | 1678 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1679 | { |
a5606eee | 1680 | int within_current_scope; |
a5606eee | 1681 | struct frame_id saved_frame_id; |
66076460 | 1682 | int frame_saved; |
a5606eee | 1683 | |
f6bc2008 PA |
1684 | /* If this is a local watchpoint, we only want to check if the |
1685 | watchpoint frame is in scope if the current thread is the thread | |
1686 | that was used to create the watchpoint. */ | |
1687 | if (!watchpoint_in_thread_scope (b)) | |
1688 | return; | |
1689 | ||
c1fc2657 | 1690 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1691 | return; |
1692 | ||
66076460 | 1693 | frame_saved = 0; |
a5606eee VP |
1694 | |
1695 | /* Determine if the watchpoint is within scope. */ | |
1696 | if (b->exp_valid_block == NULL) | |
1697 | within_current_scope = 1; | |
1698 | else | |
1699 | { | |
b5db5dfc UW |
1700 | struct frame_info *fi = get_current_frame (); |
1701 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1702 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1703 | ||
c9cf6e20 MG |
1704 | /* If we're at a point where the stack has been destroyed |
1705 | (e.g. in a function epilogue), unwinding may not work | |
1706 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1707 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1708 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1709 | return; |
66076460 DJ |
1710 | |
1711 | /* Save the current frame's ID so we can restore it after | |
1712 | evaluating the watchpoint expression on its own frame. */ | |
1713 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1714 | took a frame parameter, so that we didn't have to change the | |
1715 | selected frame. */ | |
1716 | frame_saved = 1; | |
1717 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1718 | ||
a5606eee VP |
1719 | fi = frame_find_by_id (b->watchpoint_frame); |
1720 | within_current_scope = (fi != NULL); | |
1721 | if (within_current_scope) | |
1722 | select_frame (fi); | |
1723 | } | |
1724 | ||
b5db5dfc UW |
1725 | /* We don't free locations. They are stored in the bp_location array |
1726 | and update_global_location_list will eventually delete them and | |
1727 | remove breakpoints if needed. */ | |
c1fc2657 | 1728 | b->loc = NULL; |
b5db5dfc | 1729 | |
a5606eee VP |
1730 | if (within_current_scope && reparse) |
1731 | { | |
bbc13ae3 | 1732 | const char *s; |
d63d0675 | 1733 | |
4d01a485 | 1734 | b->exp.reset (); |
d63d0675 | 1735 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1736 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1737 | /* If the meaning of expression itself changed, the old value is |
1738 | no longer relevant. We don't want to report a watchpoint hit | |
1739 | to the user when the old value and the new value may actually | |
1740 | be completely different objects. */ | |
fa4727a6 DJ |
1741 | b->val = NULL; |
1742 | b->val_valid = 0; | |
60e1c644 PA |
1743 | |
1744 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1745 | expression is stored in the breakpoint object, not in the | |
1746 | locations (re)created below. */ | |
c1fc2657 | 1747 | if (b->cond_string != NULL) |
60e1c644 | 1748 | { |
4d01a485 | 1749 | b->cond_exp.reset (); |
60e1c644 | 1750 | |
c1fc2657 | 1751 | s = b->cond_string; |
1bb9788d | 1752 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1753 | } |
a5606eee | 1754 | } |
a5606eee VP |
1755 | |
1756 | /* If we failed to parse the expression, for example because | |
1757 | it refers to a global variable in a not-yet-loaded shared library, | |
1758 | don't try to insert watchpoint. We don't automatically delete | |
1759 | such watchpoint, though, since failure to parse expression | |
1760 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1761 | if (!target_has_execution) |
2d134ed3 PA |
1762 | { |
1763 | /* Without execution, memory can't change. No use to try and | |
1764 | set watchpoint locations. The watchpoint will be reset when | |
1765 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1766 | if (!can_use_hw_watchpoints) |
1767 | { | |
c1fc2657 SM |
1768 | if (b->ops->works_in_software_mode (b)) |
1769 | b->type = bp_watchpoint; | |
e8369a73 | 1770 | else |
638aa5a1 AB |
1771 | error (_("Can't set read/access watchpoint when " |
1772 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1773 | } |
2d134ed3 PA |
1774 | } |
1775 | else if (within_current_scope && b->exp) | |
a5606eee | 1776 | { |
0cf6dd15 | 1777 | int pc = 0; |
a6535de1 | 1778 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1779 | struct value *v, *result; |
2d134ed3 | 1780 | struct program_space *frame_pspace; |
a5606eee | 1781 | |
4d01a485 | 1782 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1783 | |
a5606eee VP |
1784 | /* Avoid setting b->val if it's already set. The meaning of |
1785 | b->val is 'the last value' user saw, and we should update | |
1786 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1787 | happens, the code that reports it updates b->val directly. |
1788 | We don't keep track of the memory value for masked | |
1789 | watchpoints. */ | |
c1fc2657 | 1790 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1791 | { |
bb9d5f81 | 1792 | if (b->val_bitsize != 0) |
850645cf TT |
1793 | v = extract_bitfield_from_watchpoint_value (b, v); |
1794 | b->val = release_value (v); | |
fa4727a6 DJ |
1795 | b->val_valid = 1; |
1796 | } | |
a5606eee | 1797 | |
2d134ed3 PA |
1798 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1799 | ||
a5606eee | 1800 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1801 | gdb_assert (!val_chain.empty ()); |
1802 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1803 | { |
a6535de1 TT |
1804 | v = iter.get (); |
1805 | ||
a5606eee VP |
1806 | /* If it's a memory location, and GDB actually needed |
1807 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1808 | must watch it. If the first value returned is |
1809 | still lazy, that means an error occurred reading it; | |
1810 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1811 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1812 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1813 | { |
1814 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1815 | |
a5606eee VP |
1816 | /* We only watch structs and arrays if user asked |
1817 | for it explicitly, never if they just happen to | |
1818 | appear in the middle of some value chain. */ | |
fa4727a6 | 1819 | if (v == result |
a5606eee VP |
1820 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1821 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1822 | { | |
1823 | CORE_ADDR addr; | |
f486487f | 1824 | enum target_hw_bp_type type; |
a5606eee | 1825 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1826 | int bitpos = 0, bitsize = 0; |
1827 | ||
1828 | if (value_bitsize (v) != 0) | |
1829 | { | |
1830 | /* Extract the bit parameters out from the bitfield | |
1831 | sub-expression. */ | |
1832 | bitpos = value_bitpos (v); | |
1833 | bitsize = value_bitsize (v); | |
1834 | } | |
1835 | else if (v == result && b->val_bitsize != 0) | |
1836 | { | |
1837 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1838 | lvalue whose bit parameters are saved in the fields | |
1839 | VAL_BITPOS and VAL_BITSIZE. */ | |
1840 | bitpos = b->val_bitpos; | |
1841 | bitsize = b->val_bitsize; | |
1842 | } | |
a5606eee | 1843 | |
42ae5230 | 1844 | addr = value_address (v); |
bb9d5f81 PP |
1845 | if (bitsize != 0) |
1846 | { | |
1847 | /* Skip the bytes that don't contain the bitfield. */ | |
1848 | addr += bitpos / 8; | |
1849 | } | |
1850 | ||
a5606eee | 1851 | type = hw_write; |
c1fc2657 | 1852 | if (b->type == bp_read_watchpoint) |
a5606eee | 1853 | type = hw_read; |
c1fc2657 | 1854 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1855 | type = hw_access; |
3a5c3e22 | 1856 | |
c1fc2657 SM |
1857 | loc = allocate_bp_location (b); |
1858 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1859 | ; |
1860 | *tmp = loc; | |
a6d9a66e | 1861 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1862 | |
1863 | loc->pspace = frame_pspace; | |
f17d9474 | 1864 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1865 | |
1866 | if (bitsize != 0) | |
1867 | { | |
1868 | /* Just cover the bytes that make up the bitfield. */ | |
1869 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1870 | } | |
1871 | else | |
1872 | loc->length = TYPE_LENGTH (value_type (v)); | |
1873 | ||
a5606eee VP |
1874 | loc->watchpoint_type = type; |
1875 | } | |
1876 | } | |
9fa40276 TJB |
1877 | } |
1878 | ||
1879 | /* Change the type of breakpoint between hardware assisted or | |
1880 | an ordinary watchpoint depending on the hardware support | |
1881 | and free hardware slots. REPARSE is set when the inferior | |
1882 | is started. */ | |
a9634178 | 1883 | if (reparse) |
9fa40276 | 1884 | { |
e09342b5 | 1885 | int reg_cnt; |
9fa40276 TJB |
1886 | enum bp_loc_type loc_type; |
1887 | struct bp_location *bl; | |
a5606eee | 1888 | |
a9634178 | 1889 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1890 | |
1891 | if (reg_cnt) | |
9fa40276 TJB |
1892 | { |
1893 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1894 | enum bptype type; |
9fa40276 | 1895 | |
a9634178 TJB |
1896 | /* Use an exact watchpoint when there's only one memory region to be |
1897 | watched, and only one debug register is needed to watch it. */ | |
1898 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1899 | ||
9fa40276 | 1900 | /* We need to determine how many resources are already |
e09342b5 TJB |
1901 | used for all other hardware watchpoints plus this one |
1902 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1903 | this watchpoint in as well. */ |
1904 | ||
1905 | /* If this is a software watchpoint, we try to turn it | |
1906 | to a hardware one -- count resources as if B was of | |
1907 | hardware watchpoint type. */ | |
c1fc2657 | 1908 | type = b->type; |
a1398e0c PA |
1909 | if (type == bp_watchpoint) |
1910 | type = bp_hardware_watchpoint; | |
1911 | ||
1912 | /* This watchpoint may or may not have been placed on | |
1913 | the list yet at this point (it won't be in the list | |
1914 | if we're trying to create it for the first time, | |
1915 | through watch_command), so always account for it | |
1916 | manually. */ | |
1917 | ||
1918 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1919 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1920 | |
1921 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1922 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1923 | |
1924 | target_resources_ok | |
1925 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1926 | if (target_resources_ok <= 0) |
a9634178 | 1927 | { |
c1fc2657 | 1928 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1929 | |
1930 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1931 | error (_("Target does not support this type of " |
1932 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1933 | else if (target_resources_ok < 0 && !sw_mode) |
1934 | error (_("There are not enough available hardware " | |
1935 | "resources for this watchpoint.")); | |
a1398e0c PA |
1936 | |
1937 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1938 | b->type = bp_watchpoint; |
a1398e0c PA |
1939 | } |
1940 | else | |
1941 | { | |
1942 | /* If this was a software watchpoint, we've just | |
1943 | found we have enough resources to turn it to a | |
1944 | hardware watchpoint. Otherwise, this is a | |
1945 | nop. */ | |
c1fc2657 | 1946 | b->type = type; |
a9634178 | 1947 | } |
9fa40276 | 1948 | } |
c1fc2657 | 1949 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1950 | { |
1951 | if (!can_use_hw_watchpoints) | |
1952 | error (_("Can't set read/access watchpoint when " | |
1953 | "hardware watchpoints are disabled.")); | |
1954 | else | |
1955 | error (_("Expression cannot be implemented with " | |
1956 | "read/access watchpoint.")); | |
1957 | } | |
9fa40276 | 1958 | else |
c1fc2657 | 1959 | b->type = bp_watchpoint; |
9fa40276 | 1960 | |
c1fc2657 | 1961 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1962 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1963 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1964 | bl->loc_type = loc_type; |
1965 | } | |
1966 | ||
c7437ca6 PA |
1967 | /* If a software watchpoint is not watching any memory, then the |
1968 | above left it without any location set up. But, | |
1969 | bpstat_stop_status requires a location to be able to report | |
1970 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1971 | if (b->type == bp_watchpoint && b->loc == NULL) |
1972 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1973 | } |
1974 | else if (!within_current_scope) | |
7270d8f2 | 1975 | { |
ac74f770 MS |
1976 | printf_filtered (_("\ |
1977 | Watchpoint %d deleted because the program has left the block\n\ | |
1978 | in which its expression is valid.\n"), | |
c1fc2657 | 1979 | b->number); |
d0fb5eae | 1980 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1981 | } |
a5606eee VP |
1982 | |
1983 | /* Restore the selected frame. */ | |
66076460 DJ |
1984 | if (frame_saved) |
1985 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1986 | } |
1987 | ||
a5606eee | 1988 | |
74960c60 | 1989 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1990 | inserted in the inferior. We don't differentiate the type of BL's owner |
1991 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1992 | breakpoint_ops is not defined, because in insert_bp_location, | |
1993 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1994 | static int |
35df4500 | 1995 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1996 | { |
35df4500 | 1997 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1998 | return 0; |
1999 | ||
35df4500 | 2000 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2001 | return 0; |
2002 | ||
35df4500 | 2003 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2004 | return 0; |
2005 | ||
f8eba3c6 TT |
2006 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2007 | return 0; | |
2008 | ||
56710373 PA |
2009 | /* This is set for example, when we're attached to the parent of a |
2010 | vfork, and have detached from the child. The child is running | |
2011 | free, and we expect it to do an exec or exit, at which point the | |
2012 | OS makes the parent schedulable again (and the target reports | |
2013 | that the vfork is done). Until the child is done with the shared | |
2014 | memory region, do not insert breakpoints in the parent, otherwise | |
2015 | the child could still trip on the parent's breakpoints. Since | |
2016 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2017 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2018 | return 0; |
2019 | ||
31e77af2 | 2020 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2021 | location, except if the breakpoint is a single-step breakpoint, |
2022 | and the breakpoint's thread is the thread which is stepping past | |
2023 | a breakpoint. */ | |
31e77af2 PA |
2024 | if ((bl->loc_type == bp_loc_software_breakpoint |
2025 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2026 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2027 | bl->address) |
2028 | /* The single-step breakpoint may be inserted at the location | |
2029 | we're trying to step if the instruction branches to itself. | |
2030 | However, the instruction won't be executed at all and it may | |
2031 | break the semantics of the instruction, for example, the | |
2032 | instruction is a conditional branch or updates some flags. | |
2033 | We can't fix it unless GDB is able to emulate the instruction | |
2034 | or switch to displaced stepping. */ | |
2035 | && !(bl->owner->type == bp_single_step | |
2036 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2037 | { |
2038 | if (debug_infrun) | |
2039 | { | |
2040 | fprintf_unfiltered (gdb_stdlog, | |
2041 | "infrun: skipping breakpoint: " | |
2042 | "stepping past insn at: %s\n", | |
2043 | paddress (bl->gdbarch, bl->address)); | |
2044 | } | |
2045 | return 0; | |
2046 | } | |
31e77af2 | 2047 | |
963f9c80 PA |
2048 | /* Don't insert watchpoints if we're trying to step past the |
2049 | instruction that triggered one. */ | |
2050 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2051 | && stepping_past_nonsteppable_watchpoint ()) | |
2052 | { | |
2053 | if (debug_infrun) | |
2054 | { | |
2055 | fprintf_unfiltered (gdb_stdlog, | |
2056 | "infrun: stepping past non-steppable watchpoint. " | |
2057 | "skipping watchpoint at %s:%d\n", | |
2058 | paddress (bl->gdbarch, bl->address), | |
2059 | bl->length); | |
2060 | } | |
2061 | return 0; | |
2062 | } | |
2063 | ||
74960c60 VP |
2064 | return 1; |
2065 | } | |
2066 | ||
934709f0 PW |
2067 | /* Same as should_be_inserted but does the check assuming |
2068 | that the location is not duplicated. */ | |
2069 | ||
2070 | static int | |
2071 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2072 | { | |
2073 | int result; | |
2074 | const int save_duplicate = bl->duplicate; | |
2075 | ||
2076 | bl->duplicate = 0; | |
2077 | result = should_be_inserted (bl); | |
2078 | bl->duplicate = save_duplicate; | |
2079 | return result; | |
2080 | } | |
2081 | ||
b775012e LM |
2082 | /* Parses a conditional described by an expression COND into an |
2083 | agent expression bytecode suitable for evaluation | |
2084 | by the bytecode interpreter. Return NULL if there was | |
2085 | any error during parsing. */ | |
2086 | ||
833177a4 | 2087 | static agent_expr_up |
b775012e LM |
2088 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2089 | { | |
833177a4 | 2090 | if (cond == NULL) |
b775012e LM |
2091 | return NULL; |
2092 | ||
833177a4 PA |
2093 | agent_expr_up aexpr; |
2094 | ||
b775012e LM |
2095 | /* We don't want to stop processing, so catch any errors |
2096 | that may show up. */ | |
a70b8144 | 2097 | try |
b775012e | 2098 | { |
036e657b | 2099 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2100 | } |
2101 | ||
230d2906 | 2102 | catch (const gdb_exception_error &ex) |
b775012e LM |
2103 | { |
2104 | /* If we got here, it means the condition could not be parsed to a valid | |
2105 | bytecode expression and thus can't be evaluated on the target's side. | |
2106 | It's no use iterating through the conditions. */ | |
b775012e LM |
2107 | } |
2108 | ||
2109 | /* We have a valid agent expression. */ | |
2110 | return aexpr; | |
2111 | } | |
2112 | ||
2113 | /* Based on location BL, create a list of breakpoint conditions to be | |
2114 | passed on to the target. If we have duplicated locations with different | |
2115 | conditions, we will add such conditions to the list. The idea is that the | |
2116 | target will evaluate the list of conditions and will only notify GDB when | |
2117 | one of them is true. */ | |
2118 | ||
2119 | static void | |
2120 | build_target_condition_list (struct bp_location *bl) | |
2121 | { | |
2122 | struct bp_location **locp = NULL, **loc2p; | |
2123 | int null_condition_or_parse_error = 0; | |
2124 | int modified = bl->needs_update; | |
2125 | struct bp_location *loc; | |
2126 | ||
8b4f3082 | 2127 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2128 | bl->target_info.conditions.clear (); |
8b4f3082 | 2129 | |
b775012e LM |
2130 | /* This is only meaningful if the target is |
2131 | evaluating conditions and if the user has | |
2132 | opted for condition evaluation on the target's | |
2133 | side. */ | |
2134 | if (gdb_evaluates_breakpoint_condition_p () | |
2135 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2136 | return; | |
2137 | ||
2138 | /* Do a first pass to check for locations with no assigned | |
2139 | conditions or conditions that fail to parse to a valid agent expression | |
2140 | bytecode. If any of these happen, then it's no use to send conditions | |
2141 | to the target since this location will always trigger and generate a | |
2142 | response back to GDB. */ | |
2143 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2144 | { | |
2145 | loc = (*loc2p); | |
2146 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2147 | { | |
2148 | if (modified) | |
2149 | { | |
b775012e LM |
2150 | /* Re-parse the conditions since something changed. In that |
2151 | case we already freed the condition bytecodes (see | |
2152 | force_breakpoint_reinsertion). We just | |
2153 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2154 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2155 | loc->cond.get ()); | |
b775012e LM |
2156 | } |
2157 | ||
2158 | /* If we have a NULL bytecode expression, it means something | |
2159 | went wrong or we have a null condition expression. */ | |
2160 | if (!loc->cond_bytecode) | |
2161 | { | |
2162 | null_condition_or_parse_error = 1; | |
2163 | break; | |
2164 | } | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | /* If any of these happened, it means we will have to evaluate the conditions | |
2169 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2170 | for all the other duplicate locations, thus we free all of them here. | |
2171 | ||
2172 | This is so we have a finer control over which locations' conditions are | |
2173 | being evaluated by GDB or the remote stub. */ | |
2174 | if (null_condition_or_parse_error) | |
2175 | { | |
2176 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2177 | { | |
2178 | loc = (*loc2p); | |
2179 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2180 | { | |
2181 | /* Only go as far as the first NULL bytecode is | |
2182 | located. */ | |
2183 | if (!loc->cond_bytecode) | |
2184 | return; | |
2185 | ||
833177a4 | 2186 | loc->cond_bytecode.reset (); |
b775012e LM |
2187 | } |
2188 | } | |
2189 | } | |
2190 | ||
2191 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2192 | for this location's address. */ | |
2193 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2194 | { | |
2195 | loc = (*loc2p); | |
2196 | if (loc->cond | |
2197 | && is_breakpoint (loc->owner) | |
2198 | && loc->pspace->num == bl->pspace->num | |
2199 | && loc->owner->enable_state == bp_enabled | |
2200 | && loc->enabled) | |
3cde5c42 PA |
2201 | { |
2202 | /* Add the condition to the vector. This will be used later | |
2203 | to send the conditions to the target. */ | |
2204 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2205 | } | |
b775012e LM |
2206 | } |
2207 | ||
2208 | return; | |
2209 | } | |
2210 | ||
d3ce09f5 SS |
2211 | /* Parses a command described by string CMD into an agent expression |
2212 | bytecode suitable for evaluation by the bytecode interpreter. | |
2213 | Return NULL if there was any error during parsing. */ | |
2214 | ||
833177a4 | 2215 | static agent_expr_up |
d3ce09f5 SS |
2216 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2217 | { | |
bbc13ae3 KS |
2218 | const char *cmdrest; |
2219 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2220 | struct gdbarch *gdbarch = get_current_arch (); |
2221 | ||
833177a4 | 2222 | if (cmd == NULL) |
d3ce09f5 SS |
2223 | return NULL; |
2224 | ||
2225 | cmdrest = cmd; | |
2226 | ||
2227 | if (*cmdrest == ',') | |
2228 | ++cmdrest; | |
f1735a53 | 2229 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2230 | |
2231 | if (*cmdrest++ != '"') | |
2232 | error (_("No format string following the location")); | |
2233 | ||
2234 | format_start = cmdrest; | |
2235 | ||
8e481c3b | 2236 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2237 | |
2238 | format_end = cmdrest; | |
2239 | ||
2240 | if (*cmdrest++ != '"') | |
2241 | error (_("Bad format string, non-terminated '\"'.")); | |
2242 | ||
f1735a53 | 2243 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2244 | |
2245 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2246 | error (_("Invalid argument syntax")); | |
2247 | ||
2248 | if (*cmdrest == ',') | |
2249 | cmdrest++; | |
f1735a53 | 2250 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2251 | |
2252 | /* For each argument, make an expression. */ | |
2253 | ||
8e481c3b | 2254 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2255 | while (*cmdrest != '\0') |
2256 | { | |
bbc13ae3 | 2257 | const char *cmd1; |
d3ce09f5 SS |
2258 | |
2259 | cmd1 = cmdrest; | |
4d01a485 | 2260 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2261 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2262 | cmdrest = cmd1; |
2263 | if (*cmdrest == ',') | |
2264 | ++cmdrest; | |
2265 | } | |
2266 | ||
833177a4 PA |
2267 | agent_expr_up aexpr; |
2268 | ||
d3ce09f5 SS |
2269 | /* We don't want to stop processing, so catch any errors |
2270 | that may show up. */ | |
a70b8144 | 2271 | try |
d3ce09f5 | 2272 | { |
036e657b JB |
2273 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2274 | format_start, format_end - format_start, | |
8e481c3b | 2275 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2276 | } |
230d2906 | 2277 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2278 | { |
2279 | /* If we got here, it means the command could not be parsed to a valid | |
2280 | bytecode expression and thus can't be evaluated on the target's side. | |
2281 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2282 | } |
492d29ea | 2283 | |
d3ce09f5 SS |
2284 | /* We have a valid agent expression, return it. */ |
2285 | return aexpr; | |
2286 | } | |
2287 | ||
2288 | /* Based on location BL, create a list of breakpoint commands to be | |
2289 | passed on to the target. If we have duplicated locations with | |
2290 | different commands, we will add any such to the list. */ | |
2291 | ||
2292 | static void | |
2293 | build_target_command_list (struct bp_location *bl) | |
2294 | { | |
2295 | struct bp_location **locp = NULL, **loc2p; | |
2296 | int null_command_or_parse_error = 0; | |
2297 | int modified = bl->needs_update; | |
2298 | struct bp_location *loc; | |
2299 | ||
3cde5c42 PA |
2300 | /* Clear commands left over from a previous insert. */ |
2301 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2302 | |
41fac0cf | 2303 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2304 | return; |
2305 | ||
41fac0cf PA |
2306 | /* For now, limit to agent-style dprintf breakpoints. */ |
2307 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2308 | return; |
2309 | ||
41fac0cf PA |
2310 | /* For now, if we have any duplicate location that isn't a dprintf, |
2311 | don't install the target-side commands, as that would make the | |
2312 | breakpoint not be reported to the core, and we'd lose | |
2313 | control. */ | |
2314 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2315 | { | |
2316 | loc = (*loc2p); | |
2317 | if (is_breakpoint (loc->owner) | |
2318 | && loc->pspace->num == bl->pspace->num | |
2319 | && loc->owner->type != bp_dprintf) | |
2320 | return; | |
2321 | } | |
2322 | ||
d3ce09f5 SS |
2323 | /* Do a first pass to check for locations with no assigned |
2324 | conditions or conditions that fail to parse to a valid agent expression | |
2325 | bytecode. If any of these happen, then it's no use to send conditions | |
2326 | to the target since this location will always trigger and generate a | |
2327 | response back to GDB. */ | |
2328 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2329 | { | |
2330 | loc = (*loc2p); | |
2331 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2332 | { | |
2333 | if (modified) | |
2334 | { | |
d3ce09f5 SS |
2335 | /* Re-parse the commands since something changed. In that |
2336 | case we already freed the command bytecodes (see | |
2337 | force_breakpoint_reinsertion). We just | |
2338 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2339 | loc->cmd_bytecode |
2340 | = parse_cmd_to_aexpr (bl->address, | |
2341 | loc->owner->extra_string); | |
d3ce09f5 SS |
2342 | } |
2343 | ||
2344 | /* If we have a NULL bytecode expression, it means something | |
2345 | went wrong or we have a null command expression. */ | |
2346 | if (!loc->cmd_bytecode) | |
2347 | { | |
2348 | null_command_or_parse_error = 1; | |
2349 | break; | |
2350 | } | |
2351 | } | |
2352 | } | |
2353 | ||
2354 | /* If anything failed, then we're not doing target-side commands, | |
2355 | and so clean up. */ | |
2356 | if (null_command_or_parse_error) | |
2357 | { | |
2358 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2359 | { | |
2360 | loc = (*loc2p); | |
2361 | if (is_breakpoint (loc->owner) | |
2362 | && loc->pspace->num == bl->pspace->num) | |
2363 | { | |
2364 | /* Only go as far as the first NULL bytecode is | |
2365 | located. */ | |
40fb6c5e | 2366 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2367 | return; |
2368 | ||
833177a4 | 2369 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2370 | } |
2371 | } | |
2372 | } | |
2373 | ||
2374 | /* No NULL commands or failed bytecode generation. Build a command list | |
2375 | for this location's address. */ | |
2376 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2377 | { | |
2378 | loc = (*loc2p); | |
2379 | if (loc->owner->extra_string | |
2380 | && is_breakpoint (loc->owner) | |
2381 | && loc->pspace->num == bl->pspace->num | |
2382 | && loc->owner->enable_state == bp_enabled | |
2383 | && loc->enabled) | |
3cde5c42 PA |
2384 | { |
2385 | /* Add the command to the vector. This will be used later | |
2386 | to send the commands to the target. */ | |
2387 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2388 | } | |
d3ce09f5 SS |
2389 | } |
2390 | ||
2391 | bl->target_info.persist = 0; | |
2392 | /* Maybe flag this location as persistent. */ | |
2393 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2394 | bl->target_info.persist = 1; | |
2395 | } | |
2396 | ||
833b7ab5 YQ |
2397 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2398 | of breakpoint according to ADDR except single-step breakpoint. | |
2399 | Get the kind of single-step breakpoint according to the current | |
2400 | registers state. */ | |
cd6c3b4f YQ |
2401 | |
2402 | static int | |
2403 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2404 | { | |
833b7ab5 YQ |
2405 | if (bl->owner->type == bp_single_step) |
2406 | { | |
2407 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2408 | struct regcache *regcache; | |
2409 | ||
00431a78 | 2410 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2411 | |
2412 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2413 | regcache, addr); | |
2414 | } | |
2415 | else | |
2416 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2417 | } |
2418 | ||
35df4500 TJB |
2419 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2420 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2421 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2422 | Returns 0 for success, 1 if the bp_location type is not supported or |
2423 | -1 for failure. | |
879bfdc2 | 2424 | |
4a64f543 MS |
2425 | NOTE drow/2003-09-09: This routine could be broken down to an |
2426 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2427 | static int |
35df4500 | 2428 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2429 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2430 | int *disabled_breaks, |
dd61ec5c MW |
2431 | int *hw_breakpoint_error, |
2432 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2433 | { |
cc06b668 | 2434 | gdb_exception bp_excpt; |
879bfdc2 | 2435 | |
b775012e | 2436 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2437 | return 0; |
2438 | ||
35c63cd8 JB |
2439 | /* Note we don't initialize bl->target_info, as that wipes out |
2440 | the breakpoint location's shadow_contents if the breakpoint | |
2441 | is still inserted at that location. This in turn breaks | |
2442 | target_read_memory which depends on these buffers when | |
2443 | a memory read is requested at the breakpoint location: | |
2444 | Once the target_info has been wiped, we fail to see that | |
2445 | we have a breakpoint inserted at that address and thus | |
2446 | read the breakpoint instead of returning the data saved in | |
2447 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2448 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2449 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2450 | bl->target_info.length = bl->length; |
8181d85f | 2451 | |
b775012e LM |
2452 | /* When working with target-side conditions, we must pass all the conditions |
2453 | for the same breakpoint address down to the target since GDB will not | |
2454 | insert those locations. With a list of breakpoint conditions, the target | |
2455 | can decide when to stop and notify GDB. */ | |
2456 | ||
2457 | if (is_breakpoint (bl->owner)) | |
2458 | { | |
2459 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2460 | build_target_command_list (bl); |
2461 | /* Reset the modification marker. */ | |
b775012e LM |
2462 | bl->needs_update = 0; |
2463 | } | |
2464 | ||
35df4500 TJB |
2465 | if (bl->loc_type == bp_loc_software_breakpoint |
2466 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2467 | { |
35df4500 | 2468 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2469 | { |
2470 | /* If the explicitly specified breakpoint type | |
2471 | is not hardware breakpoint, check the memory map to see | |
2472 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2473 | |
765dc015 VP |
2474 | Two important cases are: |
2475 | - location type is not hardware breakpoint, memory | |
2476 | is readonly. We change the type of the location to | |
2477 | hardware breakpoint. | |
4a64f543 MS |
2478 | - location type is hardware breakpoint, memory is |
2479 | read-write. This means we've previously made the | |
2480 | location hardware one, but then the memory map changed, | |
2481 | so we undo. | |
765dc015 | 2482 | |
4a64f543 MS |
2483 | When breakpoints are removed, remove_breakpoints will use |
2484 | location types we've just set here, the only possible | |
2485 | problem is that memory map has changed during running | |
2486 | program, but it's not going to work anyway with current | |
2487 | gdb. */ | |
765dc015 | 2488 | struct mem_region *mr |
0d5ed153 | 2489 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2490 | |
2491 | if (mr) | |
2492 | { | |
2493 | if (automatic_hardware_breakpoints) | |
2494 | { | |
765dc015 VP |
2495 | enum bp_loc_type new_type; |
2496 | ||
2497 | if (mr->attrib.mode != MEM_RW) | |
2498 | new_type = bp_loc_hardware_breakpoint; | |
2499 | else | |
2500 | new_type = bp_loc_software_breakpoint; | |
2501 | ||
35df4500 | 2502 | if (new_type != bl->loc_type) |
765dc015 VP |
2503 | { |
2504 | static int said = 0; | |
cc59ec59 | 2505 | |
35df4500 | 2506 | bl->loc_type = new_type; |
765dc015 VP |
2507 | if (!said) |
2508 | { | |
3e43a32a MS |
2509 | fprintf_filtered (gdb_stdout, |
2510 | _("Note: automatically using " | |
2511 | "hardware breakpoints for " | |
2512 | "read-only addresses.\n")); | |
765dc015 VP |
2513 | said = 1; |
2514 | } | |
2515 | } | |
2516 | } | |
35df4500 | 2517 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2518 | && mr->attrib.mode != MEM_RW) |
2519 | { | |
2520 | fprintf_unfiltered (tmp_error_stream, | |
2521 | _("Cannot insert breakpoint %d.\n" | |
2522 | "Cannot set software breakpoint " | |
2523 | "at read-only address %s\n"), | |
2524 | bl->owner->number, | |
2525 | paddress (bl->gdbarch, bl->address)); | |
2526 | return 1; | |
2527 | } | |
765dc015 VP |
2528 | } |
2529 | } | |
2530 | ||
879bfdc2 DJ |
2531 | /* First check to see if we have to handle an overlay. */ |
2532 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2533 | || bl->section == NULL |
2534 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2535 | { |
2536 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2537 | try |
dd61ec5c | 2538 | { |
0000e5cc PA |
2539 | int val; |
2540 | ||
dd61ec5c | 2541 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2542 | if (val) |
688fca4f | 2543 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2544 | } |
94aeb44b | 2545 | catch (gdb_exception &e) |
dd61ec5c | 2546 | { |
94aeb44b | 2547 | bp_excpt = std::move (e); |
dd61ec5c | 2548 | } |
879bfdc2 DJ |
2549 | } |
2550 | else | |
2551 | { | |
4a64f543 | 2552 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2553 | Shall we set a breakpoint at the LMA? */ |
2554 | if (!overlay_events_enabled) | |
2555 | { | |
2556 | /* Yes -- overlay event support is not active, | |
2557 | so we must try to set a breakpoint at the LMA. | |
2558 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2559 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2560 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2561 | bl->owner->number); |
879bfdc2 DJ |
2562 | else |
2563 | { | |
35df4500 TJB |
2564 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2565 | bl->section); | |
879bfdc2 | 2566 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2567 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2568 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2569 | |
2570 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2571 | try |
0000e5cc PA |
2572 | { |
2573 | int val; | |
2574 | ||
579c6ad9 | 2575 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2576 | = breakpoint_kind (bl, &addr); |
2577 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2578 | val = target_insert_breakpoint (bl->gdbarch, |
2579 | &bl->overlay_target_info); | |
2580 | if (val) | |
688fca4f PA |
2581 | bp_excpt |
2582 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2583 | } |
94aeb44b | 2584 | catch (gdb_exception &e) |
0000e5cc | 2585 | { |
94aeb44b | 2586 | bp_excpt = std::move (e); |
0000e5cc PA |
2587 | } |
2588 | ||
688fca4f | 2589 | if (bp_excpt.reason != 0) |
99361f52 | 2590 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2591 | "Overlay breakpoint %d " |
2592 | "failed: in ROM?\n", | |
35df4500 | 2593 | bl->owner->number); |
879bfdc2 DJ |
2594 | } |
2595 | } | |
2596 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2597 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2598 | { |
2599 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2600 | try |
dd61ec5c | 2601 | { |
0000e5cc PA |
2602 | int val; |
2603 | ||
dd61ec5c | 2604 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2605 | if (val) |
688fca4f | 2606 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2607 | } |
94aeb44b | 2608 | catch (gdb_exception &e) |
dd61ec5c | 2609 | { |
94aeb44b | 2610 | bp_excpt = std::move (e); |
dd61ec5c | 2611 | } |
879bfdc2 DJ |
2612 | } |
2613 | else | |
2614 | { | |
2615 | /* No. This breakpoint will not be inserted. | |
2616 | No error, but do not mark the bp as 'inserted'. */ | |
2617 | return 0; | |
2618 | } | |
2619 | } | |
2620 | ||
688fca4f | 2621 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2622 | { |
2623 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2624 | |
2625 | /* In some cases, we might not be able to insert a | |
2626 | breakpoint in a shared library that has already been | |
2627 | removed, but we have not yet processed the shlib unload | |
2628 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2629 | breakpoint insertion themselves can't tell why the |
2630 | breakpoint insertion failed (e.g., the remote target | |
2631 | doesn't define error codes), so we must treat generic | |
2632 | errors as memory errors. */ | |
688fca4f PA |
2633 | if (bp_excpt.reason == RETURN_ERROR |
2634 | && (bp_excpt.error == GENERIC_ERROR | |
2635 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2636 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2637 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2638 | || shared_objfile_contains_address_p (bl->pspace, |
2639 | bl->address))) | |
879bfdc2 | 2640 | { |
4a64f543 | 2641 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2642 | bl->shlib_disabled = 1; |
76727919 | 2643 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2644 | if (!*disabled_breaks) |
2645 | { | |
2646 | fprintf_unfiltered (tmp_error_stream, | |
2647 | "Cannot insert breakpoint %d.\n", | |
2648 | bl->owner->number); | |
2649 | fprintf_unfiltered (tmp_error_stream, | |
2650 | "Temporarily disabling shared " | |
2651 | "library breakpoints:\n"); | |
2652 | } | |
2653 | *disabled_breaks = 1; | |
879bfdc2 | 2654 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2655 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2656 | return 0; |
879bfdc2 DJ |
2657 | } |
2658 | else | |
879bfdc2 | 2659 | { |
35df4500 | 2660 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2661 | { |
0000e5cc | 2662 | *hw_breakpoint_error = 1; |
688fca4f | 2663 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2664 | fprintf_unfiltered (tmp_error_stream, |
2665 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2666 | bl->owner->number, |
2667 | bp_excpt.message ? ":" : ".\n"); | |
2668 | if (bp_excpt.message != NULL) | |
2669 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2670 | bp_excpt.what ()); |
879bfdc2 DJ |
2671 | } |
2672 | else | |
2673 | { | |
688fca4f | 2674 | if (bp_excpt.message == NULL) |
0000e5cc | 2675 | { |
1ccbe998 | 2676 | std::string message |
0000e5cc PA |
2677 | = memory_error_message (TARGET_XFER_E_IO, |
2678 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2679 | |
2680 | fprintf_unfiltered (tmp_error_stream, | |
2681 | "Cannot insert breakpoint %d.\n" | |
2682 | "%s\n", | |
1ccbe998 | 2683 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2684 | } |
2685 | else | |
2686 | { | |
2687 | fprintf_unfiltered (tmp_error_stream, | |
2688 | "Cannot insert breakpoint %d: %s\n", | |
2689 | bl->owner->number, | |
3d6e9d23 | 2690 | bp_excpt.what ()); |
0000e5cc | 2691 | } |
879bfdc2 | 2692 | } |
0000e5cc | 2693 | return 1; |
879bfdc2 DJ |
2694 | |
2695 | } | |
2696 | } | |
2697 | else | |
35df4500 | 2698 | bl->inserted = 1; |
879bfdc2 | 2699 | |
0000e5cc | 2700 | return 0; |
879bfdc2 DJ |
2701 | } |
2702 | ||
35df4500 | 2703 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2704 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2705 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2706 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2707 | { |
0000e5cc PA |
2708 | int val; |
2709 | ||
77b06cd7 TJB |
2710 | gdb_assert (bl->owner->ops != NULL |
2711 | && bl->owner->ops->insert_location != NULL); | |
2712 | ||
2713 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2714 | |
2715 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2716 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2717 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2718 | { |
2719 | struct bp_location *loc, **loc_temp; | |
2720 | ||
2721 | /* But don't try to insert it, if there's already another | |
2722 | hw_access location that would be considered a duplicate | |
2723 | of this one. */ | |
2724 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2725 | if (loc != bl |
85d721b8 | 2726 | && loc->watchpoint_type == hw_access |
35df4500 | 2727 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2728 | { |
35df4500 TJB |
2729 | bl->duplicate = 1; |
2730 | bl->inserted = 1; | |
2731 | bl->target_info = loc->target_info; | |
2732 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2733 | val = 0; |
2734 | break; | |
2735 | } | |
2736 | ||
2737 | if (val == 1) | |
2738 | { | |
77b06cd7 TJB |
2739 | bl->watchpoint_type = hw_access; |
2740 | val = bl->owner->ops->insert_location (bl); | |
2741 | ||
2742 | if (val) | |
2743 | /* Back to the original value. */ | |
2744 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2745 | } |
2746 | } | |
2747 | ||
35df4500 | 2748 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2749 | } |
2750 | ||
35df4500 | 2751 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2752 | { |
0000e5cc PA |
2753 | int val; |
2754 | ||
77b06cd7 TJB |
2755 | gdb_assert (bl->owner->ops != NULL |
2756 | && bl->owner->ops->insert_location != NULL); | |
2757 | ||
2758 | val = bl->owner->ops->insert_location (bl); | |
2759 | if (val) | |
2760 | { | |
2761 | bl->owner->enable_state = bp_disabled; | |
2762 | ||
2763 | if (val == 1) | |
2764 | warning (_("\ | |
2765 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2766 | of catchpoint."), bl->owner->number); | |
2767 | else | |
2768 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2769 | } | |
2770 | ||
2771 | bl->inserted = (val == 0); | |
1640b821 DJ |
2772 | |
2773 | /* We've already printed an error message if there was a problem | |
2774 | inserting this catchpoint, and we've disabled the catchpoint, | |
2775 | so just return success. */ | |
2776 | return 0; | |
879bfdc2 DJ |
2777 | } |
2778 | ||
2779 | return 0; | |
2780 | } | |
2781 | ||
6c95b8df PA |
2782 | /* This function is called when program space PSPACE is about to be |
2783 | deleted. It takes care of updating breakpoints to not reference | |
2784 | PSPACE anymore. */ | |
2785 | ||
2786 | void | |
2787 | breakpoint_program_space_exit (struct program_space *pspace) | |
2788 | { | |
2789 | struct breakpoint *b, *b_temp; | |
876fa593 | 2790 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2791 | |
2792 | /* Remove any breakpoint that was set through this program space. */ | |
2793 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2794 | { | |
2795 | if (b->pspace == pspace) | |
2796 | delete_breakpoint (b); | |
2797 | } | |
2798 | ||
2799 | /* Breakpoints set through other program spaces could have locations | |
2800 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2801 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2802 | { |
2803 | struct bp_location *tmp; | |
2804 | ||
2805 | if (loc->pspace == pspace) | |
2806 | { | |
2bdf28a0 | 2807 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2808 | if (loc->owner->loc == loc) |
2809 | loc->owner->loc = loc->next; | |
2810 | else | |
2811 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2812 | if (tmp->next == loc) | |
2813 | { | |
2814 | tmp->next = loc->next; | |
2815 | break; | |
2816 | } | |
2817 | } | |
2818 | } | |
2819 | ||
2820 | /* Now update the global location list to permanently delete the | |
2821 | removed locations above. */ | |
44702360 | 2822 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2823 | } |
2824 | ||
74960c60 VP |
2825 | /* Make sure all breakpoints are inserted in inferior. |
2826 | Throws exception on any error. | |
2827 | A breakpoint that is already inserted won't be inserted | |
2828 | again, so calling this function twice is safe. */ | |
2829 | void | |
2830 | insert_breakpoints (void) | |
2831 | { | |
2832 | struct breakpoint *bpt; | |
2833 | ||
2834 | ALL_BREAKPOINTS (bpt) | |
2835 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2836 | { |
2837 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2838 | ||
2839 | update_watchpoint (w, 0 /* don't reparse. */); | |
2840 | } | |
74960c60 | 2841 | |
04086b45 PA |
2842 | /* Updating watchpoints creates new locations, so update the global |
2843 | location list. Explicitly tell ugll to insert locations and | |
2844 | ignore breakpoints_always_inserted_mode. */ | |
2845 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2846 | } |
2847 | ||
20388dd6 YQ |
2848 | /* Invoke CALLBACK for each of bp_location. */ |
2849 | ||
2850 | void | |
2851 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2852 | { | |
2853 | struct bp_location *loc, **loc_tmp; | |
2854 | ||
2855 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2856 | { | |
2857 | callback (loc, NULL); | |
2858 | } | |
2859 | } | |
2860 | ||
b775012e LM |
2861 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2862 | target. It is the case with deleting and disabling of breakpoints when using | |
2863 | always-inserted mode. */ | |
2864 | ||
2865 | static void | |
2866 | update_inserted_breakpoint_locations (void) | |
2867 | { | |
2868 | struct bp_location *bl, **blp_tmp; | |
2869 | int error_flag = 0; | |
2870 | int val = 0; | |
2871 | int disabled_breaks = 0; | |
2872 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2873 | int hw_bp_details_reported = 0; |
b775012e | 2874 | |
d7e74731 | 2875 | string_file tmp_error_stream; |
b775012e LM |
2876 | |
2877 | /* Explicitly mark the warning -- this will only be printed if | |
2878 | there was an error. */ | |
d7e74731 | 2879 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2880 | |
5ed8105e | 2881 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2882 | |
2883 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2884 | { | |
2885 | /* We only want to update software breakpoints and hardware | |
2886 | breakpoints. */ | |
2887 | if (!is_breakpoint (bl->owner)) | |
2888 | continue; | |
2889 | ||
2890 | /* We only want to update locations that are already inserted | |
2891 | and need updating. This is to avoid unwanted insertion during | |
2892 | deletion of breakpoints. */ | |
4daf1902 | 2893 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2894 | continue; |
2895 | ||
2896 | switch_to_program_space_and_thread (bl->pspace); | |
2897 | ||
2898 | /* For targets that support global breakpoints, there's no need | |
2899 | to select an inferior to insert breakpoint to. In fact, even | |
2900 | if we aren't attached to any process yet, we should still | |
2901 | insert breakpoints. */ | |
f5656ead | 2902 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2903 | && inferior_ptid == null_ptid) |
b775012e LM |
2904 | continue; |
2905 | ||
d7e74731 | 2906 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2907 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2908 | if (val) |
2909 | error_flag = val; | |
2910 | } | |
2911 | ||
2912 | if (error_flag) | |
2913 | { | |
223ffa71 | 2914 | target_terminal::ours_for_output (); |
b775012e LM |
2915 | error_stream (tmp_error_stream); |
2916 | } | |
b775012e LM |
2917 | } |
2918 | ||
c30eee59 | 2919 | /* Used when starting or continuing the program. */ |
c906108c | 2920 | |
74960c60 VP |
2921 | static void |
2922 | insert_breakpoint_locations (void) | |
c906108c | 2923 | { |
a5606eee | 2924 | struct breakpoint *bpt; |
35df4500 | 2925 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2926 | int error_flag = 0; |
c906108c | 2927 | int val = 0; |
3fbb6ffa | 2928 | int disabled_breaks = 0; |
81d0cc19 | 2929 | int hw_breakpoint_error = 0; |
dd61ec5c | 2930 | int hw_bp_error_explained_already = 0; |
c906108c | 2931 | |
d7e74731 PA |
2932 | string_file tmp_error_stream; |
2933 | ||
81d0cc19 GS |
2934 | /* Explicitly mark the warning -- this will only be printed if |
2935 | there was an error. */ | |
d7e74731 | 2936 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2937 | |
5ed8105e | 2938 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2939 | |
35df4500 | 2940 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2941 | { |
b775012e | 2942 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2943 | continue; |
2944 | ||
4a64f543 MS |
2945 | /* There is no point inserting thread-specific breakpoints if |
2946 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2947 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2948 | if (bl->owner->thread != -1 |
5d5658a1 | 2949 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2950 | continue; |
2951 | ||
35df4500 | 2952 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2953 | |
2954 | /* For targets that support global breakpoints, there's no need | |
2955 | to select an inferior to insert breakpoint to. In fact, even | |
2956 | if we aren't attached to any process yet, we should still | |
2957 | insert breakpoints. */ | |
f5656ead | 2958 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2959 | && inferior_ptid == null_ptid) |
6c95b8df PA |
2960 | continue; |
2961 | ||
d7e74731 | 2962 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2963 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2964 | if (val) |
eacd795a | 2965 | error_flag = val; |
879bfdc2 | 2966 | } |
c906108c | 2967 | |
4a64f543 MS |
2968 | /* If we failed to insert all locations of a watchpoint, remove |
2969 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2970 | ALL_BREAKPOINTS (bpt) |
2971 | { | |
2972 | int some_failed = 0; | |
2973 | struct bp_location *loc; | |
2974 | ||
2975 | if (!is_hardware_watchpoint (bpt)) | |
2976 | continue; | |
2977 | ||
d6b74ac4 | 2978 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2979 | continue; |
74960c60 VP |
2980 | |
2981 | if (bpt->disposition == disp_del_at_next_stop) | |
2982 | continue; | |
a5606eee VP |
2983 | |
2984 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2985 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2986 | { |
2987 | some_failed = 1; | |
2988 | break; | |
2989 | } | |
2990 | if (some_failed) | |
2991 | { | |
2992 | for (loc = bpt->loc; loc; loc = loc->next) | |
2993 | if (loc->inserted) | |
834c0d03 | 2994 | remove_breakpoint (loc); |
a5606eee VP |
2995 | |
2996 | hw_breakpoint_error = 1; | |
d7e74731 PA |
2997 | tmp_error_stream.printf ("Could not insert " |
2998 | "hardware watchpoint %d.\n", | |
2999 | bpt->number); | |
eacd795a | 3000 | error_flag = -1; |
a5606eee VP |
3001 | } |
3002 | } | |
3003 | ||
eacd795a | 3004 | if (error_flag) |
81d0cc19 GS |
3005 | { |
3006 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3007 | message about possibly exhausted resources. */ | |
dd61ec5c | 3008 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3009 | { |
d7e74731 | 3010 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3011 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3012 | } |
223ffa71 | 3013 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3014 | error_stream (tmp_error_stream); |
3015 | } | |
c906108c SS |
3016 | } |
3017 | ||
c30eee59 TJB |
3018 | /* Used when the program stops. |
3019 | Returns zero if successful, or non-zero if there was a problem | |
3020 | removing a breakpoint location. */ | |
3021 | ||
c906108c | 3022 | int |
fba45db2 | 3023 | remove_breakpoints (void) |
c906108c | 3024 | { |
35df4500 | 3025 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3026 | int val = 0; |
c906108c | 3027 | |
35df4500 | 3028 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3029 | { |
1e4d1764 | 3030 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3031 | val |= remove_breakpoint (bl); |
c5aa993b | 3032 | } |
3a1bae8e | 3033 | return val; |
c906108c SS |
3034 | } |
3035 | ||
49fa26b0 PA |
3036 | /* When a thread exits, remove breakpoints that are related to |
3037 | that thread. */ | |
3038 | ||
3039 | static void | |
3040 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3041 | { | |
3042 | struct breakpoint *b, *b_tmp; | |
3043 | ||
3044 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3045 | { | |
5d5658a1 | 3046 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3047 | { |
3048 | b->disposition = disp_del_at_next_stop; | |
3049 | ||
3050 | printf_filtered (_("\ | |
43792cf0 PA |
3051 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3052 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3053 | |
3054 | /* Hide it from the user. */ | |
3055 | b->number = 0; | |
3056 | } | |
3057 | } | |
3058 | } | |
3059 | ||
00431a78 | 3060 | /* Remove breakpoints of inferior INF. */ |
6c95b8df PA |
3061 | |
3062 | int | |
00431a78 | 3063 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3064 | { |
35df4500 | 3065 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3066 | int val; |
6c95b8df | 3067 | |
35df4500 | 3068 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3069 | { |
35df4500 | 3070 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3071 | continue; |
3072 | ||
fc126975 | 3073 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3074 | { |
834c0d03 | 3075 | val = remove_breakpoint (bl); |
6c95b8df PA |
3076 | if (val != 0) |
3077 | return val; | |
3078 | } | |
3079 | } | |
3080 | return 0; | |
3081 | } | |
3082 | ||
e58b0e63 PA |
3083 | static int internal_breakpoint_number = -1; |
3084 | ||
84f4c1fe PM |
3085 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3086 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3087 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3088 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3089 | breakpoint_count and that value incremented. Internal breakpoints |
3090 | do not set the internal var bpnum. */ | |
3091 | static void | |
3092 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3093 | { | |
3094 | if (internal) | |
3095 | b->number = internal_breakpoint_number--; | |
3096 | else | |
3097 | { | |
3098 | set_breakpoint_count (breakpoint_count + 1); | |
3099 | b->number = breakpoint_count; | |
3100 | } | |
3101 | } | |
3102 | ||
e62c965a | 3103 | static struct breakpoint * |
a6d9a66e | 3104 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3105 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3106 | const struct breakpoint_ops *ops) |
e62c965a | 3107 | { |
51abb421 | 3108 | symtab_and_line sal; |
e62c965a PP |
3109 | sal.pc = address; |
3110 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3111 | sal.pspace = current_program_space; |
e62c965a | 3112 | |
51abb421 | 3113 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3114 | b->number = internal_breakpoint_number--; |
3115 | b->disposition = disp_donttouch; | |
3116 | ||
3117 | return b; | |
3118 | } | |
3119 | ||
17450429 PP |
3120 | static const char *const longjmp_names[] = |
3121 | { | |
3122 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3123 | }; | |
3124 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3125 | ||
3126 | /* Per-objfile data private to breakpoint.c. */ | |
3127 | struct breakpoint_objfile_data | |
3128 | { | |
3129 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3130 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3131 | |
3132 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3133 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3134 | |
28106bc2 | 3135 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3136 | int longjmp_searched = 0; |
28106bc2 | 3137 | |
45461e0d SM |
3138 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3139 | references. */ | |
3140 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3141 | |
17450429 | 3142 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3143 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3144 | |
3145 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3146 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3147 | |
3148 | /* True if we have looked for exception probes. */ | |
43dce439 | 3149 | int exception_searched = 0; |
28106bc2 | 3150 | |
45461e0d SM |
3151 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3152 | references. */ | |
3153 | std::vector<probe *> exception_probes; | |
17450429 PP |
3154 | }; |
3155 | ||
51d3063a TT |
3156 | static const struct objfile_key<breakpoint_objfile_data> |
3157 | breakpoint_objfile_key; | |
17450429 PP |
3158 | |
3159 | /* Minimal symbol not found sentinel. */ | |
3160 | static struct minimal_symbol msym_not_found; | |
3161 | ||
3162 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3163 | ||
3164 | static int | |
3165 | msym_not_found_p (const struct minimal_symbol *msym) | |
3166 | { | |
3167 | return msym == &msym_not_found; | |
3168 | } | |
3169 | ||
3170 | /* Return per-objfile data needed by breakpoint.c. | |
3171 | Allocate the data if necessary. */ | |
3172 | ||
3173 | static struct breakpoint_objfile_data * | |
3174 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3175 | { | |
3176 | struct breakpoint_objfile_data *bp_objfile_data; | |
3177 | ||
51d3063a | 3178 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3179 | if (bp_objfile_data == NULL) |
51d3063a | 3180 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3181 | return bp_objfile_data; |
3182 | } | |
3183 | ||
e62c965a | 3184 | static void |
af02033e | 3185 | create_overlay_event_breakpoint (void) |
e62c965a | 3186 | { |
af02033e | 3187 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3188 | |
2030c079 | 3189 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3190 | { |
3191 | struct breakpoint *b; | |
17450429 PP |
3192 | struct breakpoint_objfile_data *bp_objfile_data; |
3193 | CORE_ADDR addr; | |
67994074 | 3194 | struct explicit_location explicit_loc; |
69de3c6a | 3195 | |
17450429 PP |
3196 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3197 | ||
3b7344d5 | 3198 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3199 | continue; |
3200 | ||
3b7344d5 | 3201 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3202 | { |
3b7344d5 | 3203 | struct bound_minimal_symbol m; |
17450429 PP |
3204 | |
3205 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3206 | if (m.minsym == NULL) |
17450429 PP |
3207 | { |
3208 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3209 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3210 | continue; |
3211 | } | |
3212 | bp_objfile_data->overlay_msym = m; | |
3213 | } | |
e62c965a | 3214 | |
77e371c0 | 3215 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3216 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3217 | bp_overlay_event, |
3218 | &internal_breakpoint_ops); | |
67994074 KS |
3219 | initialize_explicit_location (&explicit_loc); |
3220 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3221 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3222 | |
69de3c6a PP |
3223 | if (overlay_debugging == ovly_auto) |
3224 | { | |
3225 | b->enable_state = bp_enabled; | |
3226 | overlay_events_enabled = 1; | |
3227 | } | |
3228 | else | |
3229 | { | |
3230 | b->enable_state = bp_disabled; | |
3231 | overlay_events_enabled = 0; | |
3232 | } | |
e62c965a | 3233 | } |
e62c965a PP |
3234 | } |
3235 | ||
0fd8e87f | 3236 | static void |
af02033e | 3237 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3238 | { |
6c95b8df | 3239 | struct program_space *pspace; |
6c95b8df | 3240 | |
5ed8105e | 3241 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3242 | |
6c95b8df | 3243 | ALL_PSPACES (pspace) |
af02033e | 3244 | { |
af02033e PP |
3245 | set_current_program_space (pspace); |
3246 | ||
2030c079 | 3247 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3248 | { |
3249 | int i; | |
3250 | struct gdbarch *gdbarch; | |
3251 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3252 | |
aed57c53 | 3253 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3254 | |
aed57c53 | 3255 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3256 | |
aed57c53 TT |
3257 | if (!bp_objfile_data->longjmp_searched) |
3258 | { | |
3259 | std::vector<probe *> ret | |
3260 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3261 | |
aed57c53 TT |
3262 | if (!ret.empty ()) |
3263 | { | |
3264 | /* We are only interested in checking one element. */ | |
3265 | probe *p = ret[0]; | |
3266 | ||
3267 | if (!p->can_evaluate_arguments ()) | |
3268 | { | |
3269 | /* We cannot use the probe interface here, because it does | |
3270 | not know how to evaluate arguments. */ | |
3271 | ret.clear (); | |
3272 | } | |
3273 | } | |
3274 | bp_objfile_data->longjmp_probes = ret; | |
3275 | bp_objfile_data->longjmp_searched = 1; | |
3276 | } | |
25f9533e | 3277 | |
aed57c53 TT |
3278 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3279 | { | |
3280 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3281 | { | |
3282 | struct breakpoint *b; | |
3283 | ||
3284 | b = create_internal_breakpoint (gdbarch, | |
3285 | p->get_relocated_address (objfile), | |
3286 | bp_longjmp_master, | |
3287 | &internal_breakpoint_ops); | |
3288 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3289 | b->enable_state = bp_disabled; | |
3290 | } | |
28106bc2 | 3291 | |
aed57c53 TT |
3292 | continue; |
3293 | } | |
28106bc2 | 3294 | |
aed57c53 | 3295 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
28106bc2 | 3296 | continue; |
28106bc2 | 3297 | |
aed57c53 TT |
3298 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3299 | { | |
3300 | struct breakpoint *b; | |
3301 | const char *func_name; | |
3302 | CORE_ADDR addr; | |
3303 | struct explicit_location explicit_loc; | |
0fd8e87f | 3304 | |
aed57c53 TT |
3305 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3306 | continue; | |
17450429 | 3307 | |
aed57c53 TT |
3308 | func_name = longjmp_names[i]; |
3309 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3310 | { | |
3311 | struct bound_minimal_symbol m; | |
3312 | ||
3313 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3314 | if (m.minsym == NULL) | |
3315 | { | |
3316 | /* Prevent future lookups in this objfile. */ | |
3317 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3318 | continue; | |
3319 | } | |
3320 | bp_objfile_data->longjmp_msym[i] = m; | |
3321 | } | |
17450429 | 3322 | |
aed57c53 TT |
3323 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3324 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3325 | &internal_breakpoint_ops); | |
3326 | initialize_explicit_location (&explicit_loc); | |
3327 | explicit_loc.function_name = ASTRDUP (func_name); | |
3328 | b->location = new_explicit_location (&explicit_loc); | |
3329 | b->enable_state = bp_disabled; | |
3330 | } | |
3331 | } | |
af02033e | 3332 | } |
0fd8e87f UW |
3333 | } |
3334 | ||
af02033e | 3335 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3336 | static void |
af02033e | 3337 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3338 | { |
3339 | struct program_space *pspace; | |
af02033e | 3340 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3341 | |
5ed8105e | 3342 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3343 | |
3344 | ALL_PSPACES (pspace) | |
17450429 | 3345 | { |
17450429 PP |
3346 | CORE_ADDR addr; |
3347 | ||
3348 | set_current_program_space (pspace); | |
3349 | ||
2030c079 | 3350 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3351 | { |
3352 | struct breakpoint *b; | |
3353 | struct breakpoint_objfile_data *bp_objfile_data; | |
3354 | struct explicit_location explicit_loc; | |
aa7d318d | 3355 | |
aed57c53 | 3356 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3357 | |
aed57c53 TT |
3358 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3359 | continue; | |
17450429 | 3360 | |
aed57c53 TT |
3361 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3362 | { | |
3363 | struct bound_minimal_symbol m; | |
17450429 | 3364 | |
aed57c53 TT |
3365 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3366 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3367 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3368 | { | |
3369 | /* Prevent future lookups in this objfile. */ | |
3370 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3371 | continue; | |
3372 | } | |
3373 | bp_objfile_data->terminate_msym = m; | |
3374 | } | |
aa7d318d | 3375 | |
aed57c53 TT |
3376 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3377 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
3378 | bp_std_terminate_master, | |
3379 | &internal_breakpoint_ops); | |
3380 | initialize_explicit_location (&explicit_loc); | |
3381 | explicit_loc.function_name = ASTRDUP (func_name); | |
3382 | b->location = new_explicit_location (&explicit_loc); | |
3383 | b->enable_state = bp_disabled; | |
3384 | } | |
17450429 | 3385 | } |
aa7d318d TT |
3386 | } |
3387 | ||
186c406b TT |
3388 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3389 | ||
70221824 | 3390 | static void |
186c406b TT |
3391 | create_exception_master_breakpoint (void) |
3392 | { | |
17450429 | 3393 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3394 | |
2030c079 | 3395 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3396 | { |
17450429 PP |
3397 | struct breakpoint *b; |
3398 | struct gdbarch *gdbarch; | |
3399 | struct breakpoint_objfile_data *bp_objfile_data; | |
3400 | CORE_ADDR addr; | |
67994074 | 3401 | struct explicit_location explicit_loc; |
17450429 PP |
3402 | |
3403 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3404 | ||
28106bc2 SDJ |
3405 | /* We prefer the SystemTap probe point if it exists. */ |
3406 | if (!bp_objfile_data->exception_searched) | |
3407 | { | |
45461e0d SM |
3408 | std::vector<probe *> ret |
3409 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3410 | |
45461e0d | 3411 | if (!ret.empty ()) |
25f9533e SDJ |
3412 | { |
3413 | /* We are only interested in checking one element. */ | |
45461e0d | 3414 | probe *p = ret[0]; |
25f9533e | 3415 | |
935676c9 | 3416 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3417 | { |
3418 | /* We cannot use the probe interface here, because it does | |
3419 | not know how to evaluate arguments. */ | |
45461e0d | 3420 | ret.clear (); |
25f9533e SDJ |
3421 | } |
3422 | } | |
3423 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3424 | bp_objfile_data->exception_searched = 1; |
3425 | } | |
3426 | ||
45461e0d | 3427 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3428 | { |
b926417a | 3429 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3430 | |
3431 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3432 | { |
729662a5 | 3433 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3434 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3435 | bp_exception_master, |
3436 | &internal_breakpoint_ops); | |
d28cd78a | 3437 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3438 | b->enable_state = bp_disabled; |
3439 | } | |
3440 | ||
3441 | continue; | |
3442 | } | |
3443 | ||
3444 | /* Otherwise, try the hook function. */ | |
3445 | ||
3b7344d5 | 3446 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3447 | continue; |
3448 | ||
3449 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3450 | |
3b7344d5 | 3451 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3452 | { |
3b7344d5 | 3453 | struct bound_minimal_symbol debug_hook; |
186c406b | 3454 | |
17450429 | 3455 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3456 | if (debug_hook.minsym == NULL) |
17450429 | 3457 | { |
3b7344d5 | 3458 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3459 | continue; |
3460 | } | |
3461 | ||
3462 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3463 | } |
17450429 | 3464 | |
77e371c0 | 3465 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3466 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3467 | current_top_target ()); | |
06edf0c0 PA |
3468 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3469 | &internal_breakpoint_ops); | |
67994074 KS |
3470 | initialize_explicit_location (&explicit_loc); |
3471 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3472 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3473 | b->enable_state = bp_disabled; |
186c406b | 3474 | } |
186c406b TT |
3475 | } |
3476 | ||
9ef9e6a6 KS |
3477 | /* Does B have a location spec? */ |
3478 | ||
3479 | static int | |
3480 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3481 | { | |
d28cd78a | 3482 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3483 | } |
3484 | ||
c906108c | 3485 | void |
fba45db2 | 3486 | update_breakpoints_after_exec (void) |
c906108c | 3487 | { |
35df4500 | 3488 | struct breakpoint *b, *b_tmp; |
876fa593 | 3489 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3490 | |
25b22b0a PA |
3491 | /* We're about to delete breakpoints from GDB's lists. If the |
3492 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3493 | writing the breakpoints' "shadow contents" back into memory. The | |
3494 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3495 | do that. Instead, the target is responsible from marking | |
3496 | breakpoints out as soon as it detects an exec. We don't do that | |
3497 | here instead, because there may be other attempts to delete | |
3498 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3499 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3500 | if (bploc->pspace == current_program_space) |
3501 | gdb_assert (!bploc->inserted); | |
c906108c | 3502 | |
35df4500 | 3503 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3504 | { |
6c95b8df PA |
3505 | if (b->pspace != current_program_space) |
3506 | continue; | |
3507 | ||
4a64f543 | 3508 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3509 | if (b->type == bp_shlib_event) |
3510 | { | |
3511 | delete_breakpoint (b); | |
3512 | continue; | |
3513 | } | |
c906108c | 3514 | |
4a64f543 | 3515 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3516 | if (b->type == bp_jit_event) |
3517 | { | |
3518 | delete_breakpoint (b); | |
3519 | continue; | |
3520 | } | |
3521 | ||
1900040c | 3522 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3523 | as must overlay event and longjmp master breakpoints. */ |
3524 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3525 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3526 | || b->type == bp_exception_master) | |
c4093a6a JM |
3527 | { |
3528 | delete_breakpoint (b); | |
3529 | continue; | |
3530 | } | |
3531 | ||
4a64f543 | 3532 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3533 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3534 | { |
3535 | delete_breakpoint (b); | |
3536 | continue; | |
3537 | } | |
3538 | ||
7c16b83e PA |
3539 | /* Just like single-step breakpoints. */ |
3540 | if (b->type == bp_single_step) | |
3541 | { | |
3542 | delete_breakpoint (b); | |
3543 | continue; | |
3544 | } | |
3545 | ||
611c83ae PA |
3546 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3547 | after an exec. */ | |
186c406b | 3548 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3549 | || b->type == bp_longjmp_call_dummy |
186c406b | 3550 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3551 | { |
3552 | delete_breakpoint (b); | |
3553 | continue; | |
3554 | } | |
3555 | ||
ce78b96d JB |
3556 | if (b->type == bp_catchpoint) |
3557 | { | |
3558 | /* For now, none of the bp_catchpoint breakpoints need to | |
3559 | do anything at this point. In the future, if some of | |
3560 | the catchpoints need to something, we will need to add | |
3561 | a new method, and call this method from here. */ | |
3562 | continue; | |
3563 | } | |
3564 | ||
c5aa993b JM |
3565 | /* bp_finish is a special case. The only way we ought to be able |
3566 | to see one of these when an exec() has happened, is if the user | |
3567 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3568 | carries them to the call-site of the current callee, by setting | |
3569 | a temporary bp there and resuming. But in this case, the finish | |
3570 | will carry them entirely through the vfork & exec. | |
3571 | ||
3572 | We don't want to allow a bp_finish to remain inserted now. But | |
3573 | we can't safely delete it, 'cause finish_command has a handle to | |
3574 | the bp on a bpstat, and will later want to delete it. There's a | |
3575 | chance (and I've seen it happen) that if we delete the bp_finish | |
3576 | here, that its storage will get reused by the time finish_command | |
3577 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3578 | We really must allow finish_command to delete a bp_finish. | |
3579 | ||
e5dd4106 | 3580 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3581 | it's safe to delete something others may have handles to?" |
3582 | problem, what we'll do here is just uninsert the bp_finish, and | |
3583 | let finish_command delete it. | |
3584 | ||
3585 | (We know the bp_finish is "doomed" in the sense that it's | |
3586 | momentary, and will be deleted as soon as finish_command sees | |
3587 | the inferior stopped. So it doesn't matter that the bp's | |
3588 | address is probably bogus in the new a.out, unlike e.g., the | |
3589 | solib breakpoints.) */ | |
c5aa993b | 3590 | |
c5aa993b JM |
3591 | if (b->type == bp_finish) |
3592 | { | |
3593 | continue; | |
3594 | } | |
3595 | ||
3596 | /* Without a symbolic address, we have little hope of the | |
3597 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3598 | a.out. */ |
9ef9e6a6 | 3599 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3600 | { |
3601 | delete_breakpoint (b); | |
3602 | continue; | |
3603 | } | |
c5aa993b | 3604 | } |
c906108c SS |
3605 | } |
3606 | ||
3607 | int | |
d80ee84f | 3608 | detach_breakpoints (ptid_t ptid) |
c906108c | 3609 | { |
35df4500 | 3610 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3611 | int val = 0; |
2989a365 | 3612 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3613 | struct inferior *inf = current_inferior (); |
c5aa993b | 3614 | |
e99b03dc | 3615 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3616 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3617 | |
6c95b8df | 3618 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3619 | inferior_ptid = ptid; |
35df4500 | 3620 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3621 | { |
35df4500 | 3622 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3623 | continue; |
3624 | ||
bd9673a4 PW |
3625 | /* This function must physically remove breakpoints locations |
3626 | from the specified ptid, without modifying the breakpoint | |
3627 | package's state. Locations of type bp_loc_other are only | |
3628 | maintained at GDB side. So, there is no need to remove | |
3629 | these bp_loc_other locations. Moreover, removing these | |
3630 | would modify the breakpoint package's state. */ | |
3631 | if (bl->loc_type == bp_loc_other) | |
3632 | continue; | |
3633 | ||
35df4500 | 3634 | if (bl->inserted) |
b2b6a7da | 3635 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3636 | } |
d03285ec | 3637 | |
3a1bae8e | 3638 | return val; |
c906108c SS |
3639 | } |
3640 | ||
35df4500 | 3641 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3642 | Note that this is used to detach breakpoints from a child fork. |
3643 | When we get here, the child isn't in the inferior list, and neither | |
3644 | do we have objects to represent its address space --- we should | |
35df4500 | 3645 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3646 | |
c906108c | 3647 | static int |
b2b6a7da | 3648 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3649 | { |
3650 | int val; | |
c5aa993b | 3651 | |
35df4500 TJB |
3652 | /* BL is never in moribund_locations by our callers. */ |
3653 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3654 | |
74960c60 VP |
3655 | /* The type of none suggests that owner is actually deleted. |
3656 | This should not ever happen. */ | |
35df4500 | 3657 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3658 | |
35df4500 TJB |
3659 | if (bl->loc_type == bp_loc_software_breakpoint |
3660 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3661 | { |
c02f5703 MS |
3662 | /* "Normal" instruction breakpoint: either the standard |
3663 | trap-instruction bp (bp_breakpoint), or a | |
3664 | bp_hardware_breakpoint. */ | |
3665 | ||
3666 | /* First check to see if we have to handle an overlay. */ | |
3667 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3668 | || bl->section == NULL |
3669 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3670 | { |
3671 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3672 | |
3673 | /* If we're trying to uninsert a memory breakpoint that we | |
3674 | know is set in a dynamic object that is marked | |
3675 | shlib_disabled, then either the dynamic object was | |
3676 | removed with "remove-symbol-file" or with | |
3677 | "nosharedlibrary". In the former case, we don't know | |
3678 | whether another dynamic object might have loaded over the | |
3679 | breakpoint's address -- the user might well let us know | |
3680 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3681 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3682 | list of dynamically loaded objects). If we have the |
3683 | breakpoint's shadow memory, that is, this is a software | |
3684 | breakpoint managed by GDB, check whether the breakpoint | |
3685 | is still inserted in memory, to avoid overwriting wrong | |
3686 | code with stale saved shadow contents. Note that HW | |
3687 | breakpoints don't have shadow memory, as they're | |
3688 | implemented using a mechanism that is not dependent on | |
3689 | being able to modify the target's memory, and as such | |
3690 | they should always be removed. */ | |
3691 | if (bl->shlib_disabled | |
3692 | && bl->target_info.shadow_len != 0 | |
3693 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3694 | val = 0; | |
3695 | else | |
73971819 | 3696 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3697 | } |
c906108c SS |
3698 | else |
3699 | { | |
4a64f543 | 3700 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3701 | Did we set a breakpoint at the LMA? */ |
3702 | if (!overlay_events_enabled) | |
3703 | { | |
3704 | /* Yes -- overlay event support is not active, so we | |
3705 | should have set a breakpoint at the LMA. Remove it. | |
3706 | */ | |
c02f5703 MS |
3707 | /* Ignore any failures: if the LMA is in ROM, we will |
3708 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3709 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3710 | target_remove_hw_breakpoint (bl->gdbarch, | |
3711 | &bl->overlay_target_info); | |
c02f5703 | 3712 | else |
35df4500 | 3713 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3714 | &bl->overlay_target_info, |
3715 | reason); | |
c02f5703 MS |
3716 | } |
3717 | /* Did we set a breakpoint at the VMA? | |
3718 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3719 | if (bl->inserted) |
c906108c | 3720 | { |
c02f5703 MS |
3721 | /* Yes -- remove it. Previously we did not bother to |
3722 | remove the breakpoint if the section had been | |
3723 | unmapped, but let's not rely on that being safe. We | |
3724 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3725 | |
3726 | /* However, we should remove *software* breakpoints only | |
3727 | if the section is still mapped, or else we overwrite | |
3728 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3729 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3730 | || section_is_mapped (bl->section)) | |
73971819 | 3731 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3732 | else |
3733 | val = 0; | |
c906108c | 3734 | } |
c02f5703 MS |
3735 | else |
3736 | { | |
3737 | /* No -- not inserted, so no need to remove. No error. */ | |
3738 | val = 0; | |
3739 | } | |
c906108c | 3740 | } |
879d1e6b | 3741 | |
08351840 PA |
3742 | /* In some cases, we might not be able to remove a breakpoint in |
3743 | a shared library that has already been removed, but we have | |
3744 | not yet processed the shlib unload event. Similarly for an | |
3745 | unloaded add-symbol-file object - the user might not yet have | |
3746 | had the chance to remove-symbol-file it. shlib_disabled will | |
3747 | be set if the library/object has already been removed, but | |
3748 | the breakpoint hasn't been uninserted yet, e.g., after | |
3749 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3750 | always-inserted mode. */ | |
076855f9 | 3751 | if (val |
08351840 PA |
3752 | && (bl->loc_type == bp_loc_software_breakpoint |
3753 | && (bl->shlib_disabled | |
3754 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3755 | || shared_objfile_contains_address_p (bl->pspace, |
3756 | bl->address)))) | |
879d1e6b UW |
3757 | val = 0; |
3758 | ||
c906108c SS |
3759 | if (val) |
3760 | return val; | |
b2b6a7da | 3761 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3762 | } |
35df4500 | 3763 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3764 | { |
77b06cd7 TJB |
3765 | gdb_assert (bl->owner->ops != NULL |
3766 | && bl->owner->ops->remove_location != NULL); | |
3767 | ||
b2b6a7da | 3768 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3769 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3770 | |
c906108c | 3771 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3772 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3773 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3774 | bl->owner->number); |
c906108c | 3775 | } |
35df4500 TJB |
3776 | else if (bl->owner->type == bp_catchpoint |
3777 | && breakpoint_enabled (bl->owner) | |
3778 | && !bl->duplicate) | |
ce78b96d | 3779 | { |
77b06cd7 TJB |
3780 | gdb_assert (bl->owner->ops != NULL |
3781 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3782 | |
73971819 | 3783 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3784 | if (val) |
3785 | return val; | |
77b06cd7 | 3786 | |
b2b6a7da | 3787 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3788 | } |
c906108c SS |
3789 | |
3790 | return 0; | |
3791 | } | |
3792 | ||
6c95b8df | 3793 | static int |
834c0d03 | 3794 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3795 | { |
35df4500 TJB |
3796 | /* BL is never in moribund_locations by our callers. */ |
3797 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3798 | |
6c95b8df PA |
3799 | /* The type of none suggests that owner is actually deleted. |
3800 | This should not ever happen. */ | |
35df4500 | 3801 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3802 | |
5ed8105e | 3803 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3804 | |
35df4500 | 3805 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3806 | |
5ed8105e | 3807 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3808 | } |
3809 | ||
c906108c SS |
3810 | /* Clear the "inserted" flag in all breakpoints. */ |
3811 | ||
25b22b0a | 3812 | void |
fba45db2 | 3813 | mark_breakpoints_out (void) |
c906108c | 3814 | { |
35df4500 | 3815 | struct bp_location *bl, **blp_tmp; |
c906108c | 3816 | |
35df4500 | 3817 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3818 | if (bl->pspace == current_program_space) |
35df4500 | 3819 | bl->inserted = 0; |
c906108c SS |
3820 | } |
3821 | ||
53a5351d JM |
3822 | /* Clear the "inserted" flag in all breakpoints and delete any |
3823 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3824 | |
3825 | Plus other such housekeeping that has to be done for breakpoints | |
3826 | between runs. | |
3827 | ||
53a5351d JM |
3828 | Note: this function gets called at the end of a run (by |
3829 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3830 | init_wait_for_inferior). */ |
c906108c SS |
3831 | |
3832 | ||
3833 | ||
3834 | void | |
fba45db2 | 3835 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3836 | { |
35df4500 | 3837 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3838 | struct program_space *pspace = current_program_space; |
c906108c | 3839 | |
50c71eaf PA |
3840 | /* If breakpoint locations are shared across processes, then there's |
3841 | nothing to do. */ | |
f5656ead | 3842 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3843 | return; |
3844 | ||
1a853c52 | 3845 | mark_breakpoints_out (); |
075f6582 | 3846 | |
35df4500 | 3847 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3848 | { |
6c95b8df PA |
3849 | if (b->loc && b->loc->pspace != pspace) |
3850 | continue; | |
3851 | ||
c5aa993b JM |
3852 | switch (b->type) |
3853 | { | |
3854 | case bp_call_dummy: | |
e2e4d78b | 3855 | case bp_longjmp_call_dummy: |
c906108c | 3856 | |
c5aa993b | 3857 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3858 | cause problems when the inferior is rerun, so we better get |
3859 | rid of it. */ | |
3860 | ||
3861 | case bp_watchpoint_scope: | |
3862 | ||
3863 | /* Also get rid of scope breakpoints. */ | |
3864 | ||
3865 | case bp_shlib_event: | |
3866 | ||
3867 | /* Also remove solib event breakpoints. Their addresses may | |
3868 | have changed since the last time we ran the program. | |
3869 | Actually we may now be debugging against different target; | |
3870 | and so the solib backend that installed this breakpoint may | |
3871 | not be used in by the target. E.g., | |
3872 | ||
3873 | (gdb) file prog-linux | |
3874 | (gdb) run # native linux target | |
3875 | ... | |
3876 | (gdb) kill | |
3877 | (gdb) file prog-win.exe | |
3878 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3879 | */ | |
c906108c | 3880 | |
f59f708a PA |
3881 | case bp_step_resume: |
3882 | ||
3883 | /* Also remove step-resume breakpoints. */ | |
3884 | ||
7c16b83e PA |
3885 | case bp_single_step: |
3886 | ||
3887 | /* Also remove single-step breakpoints. */ | |
3888 | ||
c5aa993b JM |
3889 | delete_breakpoint (b); |
3890 | break; | |
c906108c | 3891 | |
c5aa993b JM |
3892 | case bp_watchpoint: |
3893 | case bp_hardware_watchpoint: | |
3894 | case bp_read_watchpoint: | |
3895 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3896 | { |
3897 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3898 | |
3a5c3e22 PA |
3899 | /* Likewise for watchpoints on local expressions. */ |
3900 | if (w->exp_valid_block != NULL) | |
3901 | delete_breakpoint (b); | |
63000888 | 3902 | else |
3a5c3e22 | 3903 | { |
63000888 PA |
3904 | /* Get rid of existing locations, which are no longer |
3905 | valid. New ones will be created in | |
3906 | update_watchpoint, when the inferior is restarted. | |
3907 | The next update_global_location_list call will | |
3908 | garbage collect them. */ | |
3909 | b->loc = NULL; | |
3910 | ||
3911 | if (context == inf_starting) | |
3912 | { | |
3913 | /* Reset val field to force reread of starting value in | |
3914 | insert_breakpoints. */ | |
850645cf | 3915 | w->val.reset (nullptr); |
63000888 PA |
3916 | w->val_valid = 0; |
3917 | } | |
3918 | } | |
3a5c3e22 | 3919 | } |
c5aa993b JM |
3920 | break; |
3921 | default: | |
c5aa993b JM |
3922 | break; |
3923 | } | |
3924 | } | |
1c5cfe86 PA |
3925 | |
3926 | /* Get rid of the moribund locations. */ | |
1123588c | 3927 | for (bp_location *bl : moribund_locations) |
35df4500 | 3928 | decref_bp_location (&bl); |
1123588c | 3929 | moribund_locations.clear (); |
c906108c SS |
3930 | } |
3931 | ||
6c95b8df PA |
3932 | /* These functions concern about actual breakpoints inserted in the |
3933 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3934 | we need to hop over the bkpt --- so we check for address space | |
3935 | match, not program space. */ | |
3936 | ||
c2c6d25f JM |
3937 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3938 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3939 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3940 | permanent breakpoint. | |
3941 | - When continuing from a location with an ordinary breakpoint, we | |
3942 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3943 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3944 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3945 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3946 | |
c2c6d25f | 3947 | enum breakpoint_here |
accd0bcd | 3948 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3949 | { |
35df4500 | 3950 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3951 | int any_breakpoint_here = 0; |
c906108c | 3952 | |
35df4500 | 3953 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3954 | { |
35df4500 TJB |
3955 | if (bl->loc_type != bp_loc_software_breakpoint |
3956 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3957 | continue; |
3958 | ||
f1310107 | 3959 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3960 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3961 | || bl->permanent) |
f1310107 | 3962 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3963 | { |
3964 | if (overlay_debugging | |
35df4500 TJB |
3965 | && section_is_overlay (bl->section) |
3966 | && !section_is_mapped (bl->section)) | |
075f6582 | 3967 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3968 | else if (bl->permanent) |
075f6582 DJ |
3969 | return permanent_breakpoint_here; |
3970 | else | |
3971 | any_breakpoint_here = 1; | |
3972 | } | |
3973 | } | |
c906108c | 3974 | |
f486487f | 3975 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3976 | } |
3977 | ||
d35ae833 PA |
3978 | /* See breakpoint.h. */ |
3979 | ||
3980 | int | |
accd0bcd | 3981 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
3982 | CORE_ADDR addr, ULONGEST len) |
3983 | { | |
3984 | struct bp_location *bl, **blp_tmp; | |
3985 | ||
3986 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3987 | { | |
3988 | if (bl->loc_type != bp_loc_software_breakpoint | |
3989 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
3990 | continue; | |
3991 | ||
3992 | if ((breakpoint_enabled (bl->owner) | |
3993 | || bl->permanent) | |
3994 | && breakpoint_location_address_range_overlap (bl, aspace, | |
3995 | addr, len)) | |
3996 | { | |
3997 | if (overlay_debugging | |
3998 | && section_is_overlay (bl->section) | |
3999 | && !section_is_mapped (bl->section)) | |
4000 | { | |
4001 | /* Unmapped overlay -- can't be a match. */ | |
4002 | continue; | |
4003 | } | |
4004 | ||
4005 | return 1; | |
4006 | } | |
4007 | } | |
4008 | ||
4009 | return 0; | |
4010 | } | |
4011 | ||
1c5cfe86 PA |
4012 | /* Return true if there's a moribund breakpoint at PC. */ |
4013 | ||
4014 | int | |
accd0bcd | 4015 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4016 | { |
1123588c | 4017 | for (bp_location *loc : moribund_locations) |
f1310107 | 4018 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4019 | return 1; |
4020 | ||
4021 | return 0; | |
4022 | } | |
c2c6d25f | 4023 | |
f7ce857f PA |
4024 | /* Returns non-zero iff BL is inserted at PC, in address space |
4025 | ASPACE. */ | |
4026 | ||
4027 | static int | |
4028 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4029 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4030 | { |
4031 | if (bl->inserted | |
4032 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4033 | aspace, pc)) | |
4034 | { | |
4035 | if (overlay_debugging | |
4036 | && section_is_overlay (bl->section) | |
4037 | && !section_is_mapped (bl->section)) | |
4038 | return 0; /* unmapped overlay -- can't be a match */ | |
4039 | else | |
4040 | return 1; | |
4041 | } | |
4042 | return 0; | |
4043 | } | |
4044 | ||
a1fd2fa5 | 4045 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4046 | |
4047 | int | |
accd0bcd | 4048 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4049 | { |
f7ce857f | 4050 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4051 | |
f7ce857f | 4052 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4053 | { |
f7ce857f PA |
4054 | struct bp_location *bl = *blp; |
4055 | ||
35df4500 TJB |
4056 | if (bl->loc_type != bp_loc_software_breakpoint |
4057 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4058 | continue; |
4059 | ||
f7ce857f PA |
4060 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4061 | return 1; | |
c5aa993b | 4062 | } |
c36b740a VP |
4063 | return 0; |
4064 | } | |
4065 | ||
a1fd2fa5 PA |
4066 | /* This function returns non-zero iff there is a software breakpoint |
4067 | inserted at PC. */ | |
c36b740a VP |
4068 | |
4069 | int | |
accd0bcd | 4070 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4071 | CORE_ADDR pc) |
4fa8626c | 4072 | { |
f7ce857f | 4073 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4074 | |
f7ce857f | 4075 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4076 | { |
f7ce857f PA |
4077 | struct bp_location *bl = *blp; |
4078 | ||
35df4500 | 4079 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4080 | continue; |
4081 | ||
f7ce857f PA |
4082 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4083 | return 1; | |
4fa8626c DJ |
4084 | } |
4085 | ||
4086 | return 0; | |
9c02b525 PA |
4087 | } |
4088 | ||
4089 | /* See breakpoint.h. */ | |
4090 | ||
4091 | int | |
accd0bcd | 4092 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4093 | CORE_ADDR pc) |
4094 | { | |
4095 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4096 | |
4097 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4098 | { | |
4099 | struct bp_location *bl = *blp; | |
4100 | ||
4101 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4102 | continue; | |
4103 | ||
4104 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4105 | return 1; | |
4106 | } | |
4107 | ||
4108 | return 0; | |
4fa8626c DJ |
4109 | } |
4110 | ||
9093389c | 4111 | int |
accd0bcd | 4112 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4113 | CORE_ADDR addr, ULONGEST len) |
4114 | { | |
4115 | struct breakpoint *bpt; | |
4116 | ||
4117 | ALL_BREAKPOINTS (bpt) | |
4118 | { | |
4119 | struct bp_location *loc; | |
4120 | ||
4121 | if (bpt->type != bp_hardware_watchpoint | |
4122 | && bpt->type != bp_access_watchpoint) | |
4123 | continue; | |
4124 | ||
4125 | if (!breakpoint_enabled (bpt)) | |
4126 | continue; | |
4127 | ||
4128 | for (loc = bpt->loc; loc; loc = loc->next) | |
4129 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4130 | { | |
4131 | CORE_ADDR l, h; | |
4132 | ||
4133 | /* Check for intersection. */ | |
768adc05 PA |
4134 | l = std::max<CORE_ADDR> (loc->address, addr); |
4135 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4136 | if (l < h) |
4137 | return 1; | |
4138 | } | |
4139 | } | |
4140 | return 0; | |
4141 | } | |
c906108c | 4142 | \f |
c5aa993b | 4143 | |
c906108c SS |
4144 | /* bpstat stuff. External routines' interfaces are documented |
4145 | in breakpoint.h. */ | |
4146 | ||
4147 | int | |
c326b90e | 4148 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4149 | { |
533be4dd | 4150 | return (ep->type == bp_catchpoint); |
c906108c SS |
4151 | } |
4152 | ||
f431efe5 PA |
4153 | /* Frees any storage that is part of a bpstat. Does not walk the |
4154 | 'next' chain. */ | |
4155 | ||
04afa70c | 4156 | bpstats::~bpstats () |
198757a8 | 4157 | { |
04afa70c TT |
4158 | if (bp_location_at != NULL) |
4159 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4160 | } |
4161 | ||
c906108c SS |
4162 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4163 | Also free any storage that is part of a bpstat. */ | |
4164 | ||
4165 | void | |
fba45db2 | 4166 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4167 | { |
4168 | bpstat p; | |
4169 | bpstat q; | |
4170 | ||
4171 | if (bsp == 0) | |
4172 | return; | |
4173 | p = *bsp; | |
4174 | while (p != NULL) | |
4175 | { | |
4176 | q = p->next; | |
04afa70c | 4177 | delete p; |
c906108c SS |
4178 | p = q; |
4179 | } | |
4180 | *bsp = NULL; | |
4181 | } | |
4182 | ||
04afa70c TT |
4183 | bpstats::bpstats (const bpstats &other) |
4184 | : next (NULL), | |
4185 | bp_location_at (other.bp_location_at), | |
4186 | breakpoint_at (other.breakpoint_at), | |
4187 | commands (other.commands), | |
04afa70c TT |
4188 | print (other.print), |
4189 | stop (other.stop), | |
4190 | print_it (other.print_it) | |
4191 | { | |
850645cf TT |
4192 | if (other.old_val != NULL) |
4193 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4194 | incref_bp_location (bp_location_at); |
04afa70c TT |
4195 | } |
4196 | ||
c906108c SS |
4197 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4198 | is part of the bpstat is copied as well. */ | |
4199 | ||
4200 | bpstat | |
fba45db2 | 4201 | bpstat_copy (bpstat bs) |
c906108c SS |
4202 | { |
4203 | bpstat p = NULL; | |
4204 | bpstat tmp; | |
4205 | bpstat retval = NULL; | |
4206 | ||
4207 | if (bs == NULL) | |
4208 | return bs; | |
4209 | ||
4210 | for (; bs != NULL; bs = bs->next) | |
4211 | { | |
04afa70c | 4212 | tmp = new bpstats (*bs); |
31cc81e9 | 4213 | |
c906108c SS |
4214 | if (p == NULL) |
4215 | /* This is the first thing in the chain. */ | |
4216 | retval = tmp; | |
4217 | else | |
4218 | p->next = tmp; | |
4219 | p = tmp; | |
4220 | } | |
4221 | p->next = NULL; | |
4222 | return retval; | |
4223 | } | |
4224 | ||
4a64f543 | 4225 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4226 | |
4227 | bpstat | |
fba45db2 | 4228 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4229 | { |
c5aa993b JM |
4230 | if (bsp == NULL) |
4231 | return NULL; | |
c906108c | 4232 | |
c5aa993b JM |
4233 | for (; bsp != NULL; bsp = bsp->next) |
4234 | { | |
f431efe5 | 4235 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4236 | return bsp; |
4237 | } | |
c906108c SS |
4238 | return NULL; |
4239 | } | |
4240 | ||
ab04a2af TT |
4241 | /* See breakpoint.h. */ |
4242 | ||
47591c29 | 4243 | int |
427cd150 | 4244 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4245 | { |
ab04a2af TT |
4246 | for (; bsp != NULL; bsp = bsp->next) |
4247 | { | |
427cd150 TT |
4248 | if (bsp->breakpoint_at == NULL) |
4249 | { | |
4250 | /* A moribund location can never explain a signal other than | |
4251 | GDB_SIGNAL_TRAP. */ | |
4252 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4253 | return 1; |
427cd150 TT |
4254 | } |
4255 | else | |
47591c29 PA |
4256 | { |
4257 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4258 | sig)) | |
4259 | return 1; | |
4260 | } | |
ab04a2af TT |
4261 | } |
4262 | ||
47591c29 | 4263 | return 0; |
ab04a2af TT |
4264 | } |
4265 | ||
4a64f543 MS |
4266 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4267 | stopped at. *BSP upon return is a bpstat which points to the | |
4268 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4269 | good for anything but further calls to bpstat_num). | |
4270 | ||
8671a17b PA |
4271 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4272 | Return -1 if stopped at a breakpoint that has been deleted since | |
4273 | we set it. | |
4274 | Return 1 otherwise. */ | |
c906108c SS |
4275 | |
4276 | int | |
8671a17b | 4277 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4278 | { |
4279 | struct breakpoint *b; | |
4280 | ||
4281 | if ((*bsp) == NULL) | |
4282 | return 0; /* No more breakpoint values */ | |
8671a17b | 4283 | |
4a64f543 MS |
4284 | /* We assume we'll never have several bpstats that correspond to a |
4285 | single breakpoint -- otherwise, this function might return the | |
4286 | same number more than once and this will look ugly. */ | |
f431efe5 | 4287 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4288 | *bsp = (*bsp)->next; |
4289 | if (b == NULL) | |
4290 | return -1; /* breakpoint that's been deleted since */ | |
4291 | ||
4292 | *num = b->number; /* We have its number */ | |
4293 | return 1; | |
c906108c SS |
4294 | } |
4295 | ||
e93ca019 | 4296 | /* See breakpoint.h. */ |
c906108c SS |
4297 | |
4298 | void | |
e93ca019 | 4299 | bpstat_clear_actions (void) |
c906108c | 4300 | { |
e93ca019 JK |
4301 | bpstat bs; |
4302 | ||
00431a78 | 4303 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4304 | return; |
4305 | ||
00431a78 | 4306 | thread_info *tp = inferior_thread (); |
e93ca019 | 4307 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4308 | { |
d1b0a7bf | 4309 | bs->commands = NULL; |
850645cf | 4310 | bs->old_val.reset (nullptr); |
c906108c SS |
4311 | } |
4312 | } | |
4313 | ||
f3b1572e PA |
4314 | /* Called when a command is about to proceed the inferior. */ |
4315 | ||
4316 | static void | |
4317 | breakpoint_about_to_proceed (void) | |
4318 | { | |
d7e15655 | 4319 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4320 | { |
4321 | struct thread_info *tp = inferior_thread (); | |
4322 | ||
4323 | /* Allow inferior function calls in breakpoint commands to not | |
4324 | interrupt the command list. When the call finishes | |
4325 | successfully, the inferior will be standing at the same | |
4326 | breakpoint as if nothing happened. */ | |
16c381f0 | 4327 | if (tp->control.in_infcall) |
f3b1572e PA |
4328 | return; |
4329 | } | |
4330 | ||
4331 | breakpoint_proceeded = 1; | |
4332 | } | |
4333 | ||
abf85f46 JK |
4334 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4335 | or its equivalent. */ | |
4336 | ||
4337 | static int | |
4338 | command_line_is_silent (struct command_line *cmd) | |
4339 | { | |
4f45d445 | 4340 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4341 | } |
4342 | ||
4a64f543 MS |
4343 | /* Execute all the commands associated with all the breakpoints at |
4344 | this location. Any of these commands could cause the process to | |
4345 | proceed beyond this point, etc. We look out for such changes by | |
4346 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4347 | |
347bddb7 PA |
4348 | Returns true if a breakpoint command resumed the inferior. In that |
4349 | case, it is the caller's responsibility to recall it again with the | |
4350 | bpstat of the current thread. */ | |
4351 | ||
4352 | static int | |
4353 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4354 | { |
4355 | bpstat bs; | |
347bddb7 | 4356 | int again = 0; |
c906108c SS |
4357 | |
4358 | /* Avoid endless recursion if a `source' command is contained | |
4359 | in bs->commands. */ | |
4360 | if (executing_breakpoint_commands) | |
347bddb7 | 4361 | return 0; |
c906108c | 4362 | |
81b1e71c TT |
4363 | scoped_restore save_executing |
4364 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4365 | |
1ac32117 | 4366 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4367 | |
4a64f543 | 4368 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4369 | bs = *bsp; |
4370 | ||
4371 | breakpoint_proceeded = 0; | |
4372 | for (; bs != NULL; bs = bs->next) | |
4373 | { | |
d1b0a7bf | 4374 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4375 | |
4376 | /* Take ownership of the BSP's command tree, if it has one. | |
4377 | ||
4378 | The command tree could legitimately contain commands like | |
4379 | 'step' and 'next', which call clear_proceed_status, which | |
4380 | frees stop_bpstat's command tree. To make sure this doesn't | |
4381 | free the tree we're executing out from under us, we need to | |
4382 | take ownership of the tree ourselves. Since a given bpstat's | |
4383 | commands are only executed once, we don't need to copy it; we | |
4384 | can clear the pointer in the bpstat, and make sure we free | |
4385 | the tree when we're done. */ | |
d1b0a7bf | 4386 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4387 | bs->commands = NULL; |
d1b0a7bf TT |
4388 | if (ccmd != NULL) |
4389 | cmd = ccmd.get (); | |
abf85f46 JK |
4390 | if (command_line_is_silent (cmd)) |
4391 | { | |
4392 | /* The action has been already done by bpstat_stop_status. */ | |
4393 | cmd = cmd->next; | |
4394 | } | |
6c50ab1c | 4395 | |
c906108c SS |
4396 | while (cmd != NULL) |
4397 | { | |
4398 | execute_control_command (cmd); | |
4399 | ||
4400 | if (breakpoint_proceeded) | |
4401 | break; | |
4402 | else | |
4403 | cmd = cmd->next; | |
4404 | } | |
6c50ab1c | 4405 | |
c906108c | 4406 | if (breakpoint_proceeded) |
32c1e744 | 4407 | { |
cb814510 | 4408 | if (current_ui->async) |
347bddb7 PA |
4409 | /* If we are in async mode, then the target might be still |
4410 | running, not stopped at any breakpoint, so nothing for | |
4411 | us to do here -- just return to the event loop. */ | |
4412 | ; | |
32c1e744 VP |
4413 | else |
4414 | /* In sync mode, when execute_control_command returns | |
4415 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4416 | Breakpoint commands for that stop were not run, since |
4417 | execute_command does not run breakpoint commands -- | |
4418 | only command_line_handler does, but that one is not | |
4419 | involved in execution of breakpoint commands. So, we | |
4420 | can now execute breakpoint commands. It should be | |
4421 | noted that making execute_command do bpstat actions is | |
4422 | not an option -- in this case we'll have recursive | |
4423 | invocation of bpstat for each breakpoint with a | |
4424 | command, and can easily blow up GDB stack. Instead, we | |
4425 | return true, which will trigger the caller to recall us | |
4426 | with the new stop_bpstat. */ | |
4427 | again = 1; | |
4428 | break; | |
32c1e744 | 4429 | } |
c906108c | 4430 | } |
347bddb7 PA |
4431 | return again; |
4432 | } | |
4433 | ||
00431a78 PA |
4434 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4435 | one, is alive and has execution. Return NULL otherwise. */ | |
4436 | ||
4437 | static thread_info * | |
4438 | get_bpstat_thread () | |
4439 | { | |
4440 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4441 | return NULL; | |
4442 | ||
4443 | thread_info *tp = inferior_thread (); | |
4444 | if (tp->state == THREAD_EXITED || tp->executing) | |
4445 | return NULL; | |
4446 | return tp; | |
4447 | } | |
4448 | ||
347bddb7 PA |
4449 | void |
4450 | bpstat_do_actions (void) | |
4451 | { | |
694c6bf5 | 4452 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4453 | thread_info *tp; |
353d1d73 | 4454 | |
347bddb7 | 4455 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4456 | while ((tp = get_bpstat_thread ()) != NULL) |
4457 | { | |
4458 | /* Since in sync mode, bpstat_do_actions may resume the | |
4459 | inferior, and only return when it is stopped at the next | |
4460 | breakpoint, we keep doing breakpoint actions until it returns | |
4461 | false to indicate the inferior was not resumed. */ | |
4462 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4463 | break; | |
4464 | } | |
353d1d73 | 4465 | |
694c6bf5 | 4466 | cleanup_if_error.release (); |
c906108c SS |
4467 | } |
4468 | ||
fa4727a6 DJ |
4469 | /* Print out the (old or new) value associated with a watchpoint. */ |
4470 | ||
4471 | static void | |
4472 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4473 | { | |
4474 | if (val == NULL) | |
4475 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4476 | else | |
79a45b7d TT |
4477 | { |
4478 | struct value_print_options opts; | |
4479 | get_user_print_options (&opts); | |
4480 | value_print (val, stream, &opts); | |
4481 | } | |
fa4727a6 DJ |
4482 | } |
4483 | ||
f303dbd6 PA |
4484 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4485 | debugging multiple threads. */ | |
4486 | ||
4487 | void | |
4488 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4489 | { | |
112e8700 | 4490 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4491 | return; |
4492 | ||
112e8700 | 4493 | uiout->text ("\n"); |
f303dbd6 PA |
4494 | |
4495 | if (show_thread_that_caused_stop ()) | |
4496 | { | |
4497 | const char *name; | |
4498 | struct thread_info *thr = inferior_thread (); | |
4499 | ||
112e8700 SM |
4500 | uiout->text ("Thread "); |
4501 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4502 | |
4503 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4504 | if (name != NULL) | |
4505 | { | |
112e8700 SM |
4506 | uiout->text (" \""); |
4507 | uiout->field_fmt ("name", "%s", name); | |
4508 | uiout->text ("\""); | |
f303dbd6 PA |
4509 | } |
4510 | ||
112e8700 | 4511 | uiout->text (" hit "); |
f303dbd6 PA |
4512 | } |
4513 | } | |
4514 | ||
e514a9d6 | 4515 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4516 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4517 | 'print_it' in the bpstat structure. Under some circumstances we |
4518 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4519 | normal_stop(). */ |
e514a9d6 JM |
4520 | |
4521 | static enum print_stop_action | |
4522 | print_bp_stop_message (bpstat bs) | |
4523 | { | |
4524 | switch (bs->print_it) | |
4525 | { | |
4526 | case print_it_noop: | |
4a64f543 | 4527 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4528 | return PRINT_UNKNOWN; |
4529 | break; | |
4530 | ||
4531 | case print_it_done: | |
4532 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4533 | relevant messages. */ |
e514a9d6 JM |
4534 | return PRINT_SRC_AND_LOC; |
4535 | break; | |
4536 | ||
4537 | case print_it_normal: | |
4f8d1dc6 | 4538 | { |
f431efe5 PA |
4539 | struct breakpoint *b = bs->breakpoint_at; |
4540 | ||
1a6a67de TJB |
4541 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4542 | which has since been deleted. */ | |
4543 | if (b == NULL) | |
4544 | return PRINT_UNKNOWN; | |
4545 | ||
348d480f PA |
4546 | /* Normal case. Call the breakpoint's print_it method. */ |
4547 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4548 | } |
348d480f | 4549 | break; |
3086aeae | 4550 | |
e514a9d6 | 4551 | default: |
8e65ff28 | 4552 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4553 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4554 | break; |
c906108c | 4555 | } |
c906108c SS |
4556 | } |
4557 | ||
edcc5120 TT |
4558 | /* A helper function that prints a shared library stopped event. */ |
4559 | ||
4560 | static void | |
4561 | print_solib_event (int is_catchpoint) | |
4562 | { | |
6fb16ce6 | 4563 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4564 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4565 | |
4566 | if (!is_catchpoint) | |
4567 | { | |
4568 | if (any_added || any_deleted) | |
112e8700 | 4569 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4570 | else |
112e8700 SM |
4571 | current_uiout->text (_("Stopped due to shared library event (no " |
4572 | "libraries added or removed)\n")); | |
edcc5120 TT |
4573 | } |
4574 | ||
112e8700 SM |
4575 | if (current_uiout->is_mi_like_p ()) |
4576 | current_uiout->field_string ("reason", | |
4577 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4578 | |
4579 | if (any_deleted) | |
4580 | { | |
112e8700 | 4581 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4582 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4583 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4584 | { |
6fb16ce6 SM |
4585 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4586 | ||
edcc5120 | 4587 | if (ix > 0) |
112e8700 SM |
4588 | current_uiout->text (" "); |
4589 | current_uiout->field_string ("library", name); | |
4590 | current_uiout->text ("\n"); | |
edcc5120 | 4591 | } |
edcc5120 TT |
4592 | } |
4593 | ||
4594 | if (any_added) | |
4595 | { | |
112e8700 | 4596 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4597 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4598 | bool first = true; |
52941706 | 4599 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4600 | { |
bcb430e4 | 4601 | if (!first) |
112e8700 | 4602 | current_uiout->text (" "); |
bcb430e4 | 4603 | first = false; |
112e8700 SM |
4604 | current_uiout->field_string ("library", iter->so_name); |
4605 | current_uiout->text ("\n"); | |
edcc5120 | 4606 | } |
edcc5120 TT |
4607 | } |
4608 | } | |
4609 | ||
e514a9d6 JM |
4610 | /* Print a message indicating what happened. This is called from |
4611 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4612 | list - a list of the eventpoints that caused this stop. KIND is |
4613 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4614 | routine calls the generic print routine for printing a message |
4615 | about reasons for stopping. This will print (for example) the | |
4616 | "Breakpoint n," part of the output. The return value of this | |
4617 | routine is one of: | |
c906108c | 4618 | |
4a64f543 | 4619 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4620 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4621 | code to print the location. An example is |
c5aa993b JM |
4622 | "Breakpoint 1, " which should be followed by |
4623 | the location. | |
917317f4 | 4624 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4625 | to also print the location part of the message. |
4626 | An example is the catch/throw messages, which | |
4a64f543 | 4627 | don't require a location appended to the end. |
917317f4 | 4628 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4629 | further info to be printed. */ |
c906108c | 4630 | |
917317f4 | 4631 | enum print_stop_action |
36dfb11c | 4632 | bpstat_print (bpstat bs, int kind) |
c906108c | 4633 | { |
f486487f | 4634 | enum print_stop_action val; |
c5aa993b | 4635 | |
c906108c | 4636 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4637 | (Currently all watchpoints go on the bpstat whether hit or not. |
4638 | That probably could (should) be changed, provided care is taken | |
c906108c | 4639 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4640 | for (; bs; bs = bs->next) |
4641 | { | |
4642 | val = print_bp_stop_message (bs); | |
4643 | if (val == PRINT_SRC_ONLY | |
4644 | || val == PRINT_SRC_AND_LOC | |
4645 | || val == PRINT_NOTHING) | |
4646 | return val; | |
4647 | } | |
c906108c | 4648 | |
36dfb11c TT |
4649 | /* If we had hit a shared library event breakpoint, |
4650 | print_bp_stop_message would print out this message. If we hit an | |
4651 | OS-level shared library event, do the same thing. */ | |
4652 | if (kind == TARGET_WAITKIND_LOADED) | |
4653 | { | |
edcc5120 | 4654 | print_solib_event (0); |
36dfb11c TT |
4655 | return PRINT_NOTHING; |
4656 | } | |
4657 | ||
e514a9d6 | 4658 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4659 | with and nothing was printed. */ |
917317f4 | 4660 | return PRINT_UNKNOWN; |
c906108c SS |
4661 | } |
4662 | ||
bf469271 | 4663 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4664 | |
bf469271 PA |
4665 | static bool |
4666 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4667 | { |
278cd55f | 4668 | struct value *mark = value_mark (); |
bf469271 | 4669 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4670 | |
c906108c | 4671 | value_free_to_mark (mark); |
bf469271 | 4672 | return res; |
c906108c SS |
4673 | } |
4674 | ||
5760d0ab | 4675 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4676 | |
04afa70c TT |
4677 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4678 | : next (NULL), | |
4679 | bp_location_at (bl), | |
4680 | breakpoint_at (bl->owner), | |
4681 | commands (NULL), | |
04afa70c TT |
4682 | print (0), |
4683 | stop (0), | |
4684 | print_it (print_it_normal) | |
c906108c | 4685 | { |
f431efe5 | 4686 | incref_bp_location (bl); |
04afa70c TT |
4687 | **bs_link_pointer = this; |
4688 | *bs_link_pointer = &next; | |
4689 | } | |
4690 | ||
4691 | bpstats::bpstats () | |
4692 | : next (NULL), | |
4693 | bp_location_at (NULL), | |
4694 | breakpoint_at (NULL), | |
4695 | commands (NULL), | |
04afa70c TT |
4696 | print (0), |
4697 | stop (0), | |
4698 | print_it (print_it_normal) | |
4699 | { | |
c906108c SS |
4700 | } |
4701 | \f | |
d983da9c DJ |
4702 | /* The target has stopped with waitstatus WS. Check if any hardware |
4703 | watchpoints have triggered, according to the target. */ | |
4704 | ||
4705 | int | |
4706 | watchpoints_triggered (struct target_waitstatus *ws) | |
4707 | { | |
57810aa7 | 4708 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4709 | CORE_ADDR addr; |
4710 | struct breakpoint *b; | |
4711 | ||
4712 | if (!stopped_by_watchpoint) | |
4713 | { | |
4714 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4715 | as not triggered. */ | |
4716 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4717 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4718 | { |
4719 | struct watchpoint *w = (struct watchpoint *) b; | |
4720 | ||
4721 | w->watchpoint_triggered = watch_triggered_no; | |
4722 | } | |
d983da9c DJ |
4723 | |
4724 | return 0; | |
4725 | } | |
4726 | ||
8b88a78e | 4727 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4728 | { |
4729 | /* We were stopped by a watchpoint, but we don't know where. | |
4730 | Mark all watchpoints as unknown. */ | |
4731 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4732 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4733 | { |
4734 | struct watchpoint *w = (struct watchpoint *) b; | |
4735 | ||
4736 | w->watchpoint_triggered = watch_triggered_unknown; | |
4737 | } | |
d983da9c | 4738 | |
3c4797ba | 4739 | return 1; |
d983da9c DJ |
4740 | } |
4741 | ||
4742 | /* The target could report the data address. Mark watchpoints | |
4743 | affected by this data address as triggered, and all others as not | |
4744 | triggered. */ | |
4745 | ||
4746 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4747 | if (is_hardware_watchpoint (b)) |
d983da9c | 4748 | { |
3a5c3e22 | 4749 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4750 | struct bp_location *loc; |
d983da9c | 4751 | |
3a5c3e22 | 4752 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4753 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4754 | { |
3a5c3e22 | 4755 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4756 | { |
3a5c3e22 PA |
4757 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4758 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4759 | |
4760 | if (newaddr == start) | |
4761 | { | |
3a5c3e22 | 4762 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4763 | break; |
4764 | } | |
4765 | } | |
4766 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4767 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4768 | addr, loc->address, |
4769 | loc->length)) | |
4770 | { | |
3a5c3e22 | 4771 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4772 | break; |
4773 | } | |
4774 | } | |
d983da9c DJ |
4775 | } |
4776 | ||
4777 | return 1; | |
4778 | } | |
4779 | ||
bf469271 PA |
4780 | /* Possible return values for watchpoint_check. */ |
4781 | enum wp_check_result | |
4782 | { | |
4783 | /* The watchpoint has been deleted. */ | |
4784 | WP_DELETED = 1, | |
4785 | ||
4786 | /* The value has changed. */ | |
4787 | WP_VALUE_CHANGED = 2, | |
4788 | ||
4789 | /* The value has not changed. */ | |
4790 | WP_VALUE_NOT_CHANGED = 3, | |
4791 | ||
4792 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4793 | WP_IGNORE = 4, | |
4794 | }; | |
c906108c SS |
4795 | |
4796 | #define BP_TEMPFLAG 1 | |
4797 | #define BP_HARDWAREFLAG 2 | |
4798 | ||
4a64f543 | 4799 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4800 | changed. */ |
553e4c11 | 4801 | |
bf469271 PA |
4802 | static wp_check_result |
4803 | watchpoint_check (bpstat bs) | |
c906108c | 4804 | { |
3a5c3e22 | 4805 | struct watchpoint *b; |
c906108c SS |
4806 | struct frame_info *fr; |
4807 | int within_current_scope; | |
4808 | ||
f431efe5 | 4809 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4810 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4811 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4812 | |
f6bc2008 PA |
4813 | /* If this is a local watchpoint, we only want to check if the |
4814 | watchpoint frame is in scope if the current thread is the thread | |
4815 | that was used to create the watchpoint. */ | |
4816 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4817 | return WP_IGNORE; |
f6bc2008 | 4818 | |
c906108c SS |
4819 | if (b->exp_valid_block == NULL) |
4820 | within_current_scope = 1; | |
4821 | else | |
4822 | { | |
edb3359d DJ |
4823 | struct frame_info *frame = get_current_frame (); |
4824 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4825 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4826 | ||
c9cf6e20 | 4827 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4828 | still in the function but the stack frame has already been |
4829 | invalidated. Since we can't rely on the values of local | |
4830 | variables after the stack has been destroyed, we are treating | |
4831 | the watchpoint in that state as `not changed' without further | |
4832 | checking. Don't mark watchpoints as changed if the current | |
4833 | frame is in an epilogue - even if they are in some other | |
4834 | frame, our view of the stack is likely to be wrong and | |
4835 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4836 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4837 | return WP_IGNORE; |
a0f49112 | 4838 | |
101dcfbe | 4839 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4840 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4841 | |
4842 | /* If we've gotten confused in the unwinder, we might have | |
4843 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4844 | if (within_current_scope) |
4845 | { | |
4846 | struct symbol *function; | |
4847 | ||
4848 | function = get_frame_function (fr); | |
4849 | if (function == NULL | |
4850 | || !contained_in (b->exp_valid_block, | |
4851 | SYMBOL_BLOCK_VALUE (function))) | |
4852 | within_current_scope = 0; | |
4853 | } | |
69fbadd5 | 4854 | |
edb3359d | 4855 | if (within_current_scope) |
c906108c SS |
4856 | /* If we end up stopping, the current frame will get selected |
4857 | in normal_stop. So this call to select_frame won't affect | |
4858 | the user. */ | |
0f7d239c | 4859 | select_frame (fr); |
c906108c | 4860 | } |
c5aa993b | 4861 | |
c906108c SS |
4862 | if (within_current_scope) |
4863 | { | |
4a64f543 MS |
4864 | /* We use value_{,free_to_}mark because it could be a *long* |
4865 | time before we return to the command level and call | |
4866 | free_all_values. We can't call free_all_values because we | |
4867 | might be in the middle of evaluating a function call. */ | |
c906108c | 4868 | |
0cf6dd15 | 4869 | int pc = 0; |
9c06b0b4 | 4870 | struct value *mark; |
fa4727a6 DJ |
4871 | struct value *new_val; |
4872 | ||
c1fc2657 | 4873 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4874 | /* Since we don't know the exact trigger address (from |
4875 | stopped_data_address), just tell the user we've triggered | |
4876 | a mask watchpoint. */ | |
4877 | return WP_VALUE_CHANGED; | |
4878 | ||
4879 | mark = value_mark (); | |
4d01a485 | 4880 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4881 | |
bb9d5f81 PP |
4882 | if (b->val_bitsize != 0) |
4883 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4884 | ||
4a64f543 MS |
4885 | /* We use value_equal_contents instead of value_equal because |
4886 | the latter coerces an array to a pointer, thus comparing just | |
4887 | the address of the array instead of its contents. This is | |
4888 | not what we want. */ | |
fa4727a6 | 4889 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4890 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4891 | new_val))) | |
c906108c | 4892 | { |
c906108c | 4893 | bs->old_val = b->val; |
850645cf | 4894 | b->val = release_value (new_val); |
fa4727a6 | 4895 | b->val_valid = 1; |
850645cf TT |
4896 | if (new_val != NULL) |
4897 | value_free_to_mark (mark); | |
c906108c SS |
4898 | return WP_VALUE_CHANGED; |
4899 | } | |
4900 | else | |
4901 | { | |
60e1c644 | 4902 | /* Nothing changed. */ |
c906108c | 4903 | value_free_to_mark (mark); |
c906108c SS |
4904 | return WP_VALUE_NOT_CHANGED; |
4905 | } | |
4906 | } | |
4907 | else | |
4908 | { | |
4909 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4910 | if we temporarily ignored the watchpoint, then when |
4911 | we reenter the block in which it is valid it contains | |
4912 | garbage (in the case of a function, it may have two | |
4913 | garbage values, one before and one after the prologue). | |
4914 | So we can't even detect the first assignment to it and | |
4915 | watch after that (since the garbage may or may not equal | |
4916 | the first value assigned). */ | |
348d480f PA |
4917 | /* We print all the stop information in |
4918 | breakpoint_ops->print_it, but in this case, by the time we | |
4919 | call breakpoint_ops->print_it this bp will be deleted | |
4920 | already. So we have no choice but print the information | |
4921 | here. */ | |
468afe6c | 4922 | |
0e454242 | 4923 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4924 | { |
4925 | struct ui_out *uiout = current_uiout; | |
4926 | ||
112e8700 SM |
4927 | if (uiout->is_mi_like_p ()) |
4928 | uiout->field_string | |
4929 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4930 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4931 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4932 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4933 | "which its expression is valid.\n"); |
4934 | } | |
4ce44c66 | 4935 | |
cdac0397 | 4936 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4937 | b->commands = NULL; |
d0fb5eae | 4938 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4939 | |
4940 | return WP_DELETED; | |
4941 | } | |
4942 | } | |
4943 | ||
18a18393 | 4944 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4945 | breakpoint location BL. This function does not check if we should |
4946 | stop, only if BL explains the stop. */ | |
4947 | ||
18a18393 | 4948 | static int |
6c95b8df | 4949 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4950 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4951 | const struct target_waitstatus *ws) |
18a18393 VP |
4952 | { |
4953 | struct breakpoint *b = bl->owner; | |
4954 | ||
348d480f | 4955 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4956 | gdb_assert (b != NULL); |
4957 | ||
bd522513 | 4958 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4959 | } |
4960 | ||
3a5c3e22 PA |
4961 | /* Determine if the watched values have actually changed, and we |
4962 | should stop. If not, set BS->stop to 0. */ | |
4963 | ||
18a18393 VP |
4964 | static void |
4965 | bpstat_check_watchpoint (bpstat bs) | |
4966 | { | |
2bdf28a0 | 4967 | const struct bp_location *bl; |
3a5c3e22 | 4968 | struct watchpoint *b; |
2bdf28a0 JK |
4969 | |
4970 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4971 | bl = bs->bp_location_at; |
2bdf28a0 | 4972 | gdb_assert (bl != NULL); |
3a5c3e22 | 4973 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4974 | gdb_assert (b != NULL); |
18a18393 | 4975 | |
18a18393 | 4976 | { |
18a18393 VP |
4977 | int must_check_value = 0; |
4978 | ||
c1fc2657 | 4979 | if (b->type == bp_watchpoint) |
18a18393 VP |
4980 | /* For a software watchpoint, we must always check the |
4981 | watched value. */ | |
4982 | must_check_value = 1; | |
4983 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4984 | /* We have a hardware watchpoint (read, write, or access) | |
4985 | and the target earlier reported an address watched by | |
4986 | this watchpoint. */ | |
4987 | must_check_value = 1; | |
4988 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 4989 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
4990 | /* We were stopped by a hardware watchpoint, but the target could |
4991 | not report the data address. We must check the watchpoint's | |
4992 | value. Access and read watchpoints are out of luck; without | |
4993 | a data address, we can't figure it out. */ | |
4994 | must_check_value = 1; | |
3a5c3e22 | 4995 | |
18a18393 VP |
4996 | if (must_check_value) |
4997 | { | |
bf469271 PA |
4998 | wp_check_result e; |
4999 | ||
a70b8144 | 5000 | try |
bf469271 PA |
5001 | { |
5002 | e = watchpoint_check (bs); | |
5003 | } | |
230d2906 | 5004 | catch (const gdb_exception &ex) |
bf469271 PA |
5005 | { |
5006 | exception_fprintf (gdb_stderr, ex, | |
5007 | "Error evaluating expression " | |
5008 | "for watchpoint %d\n", | |
5009 | b->number); | |
5010 | ||
5011 | SWITCH_THRU_ALL_UIS () | |
5012 | { | |
5013 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5014 | b->number); | |
5015 | } | |
5016 | watchpoint_del_at_next_stop (b); | |
5017 | e = WP_DELETED; | |
5018 | } | |
bf469271 | 5019 | |
18a18393 VP |
5020 | switch (e) |
5021 | { | |
5022 | case WP_DELETED: | |
5023 | /* We've already printed what needs to be printed. */ | |
5024 | bs->print_it = print_it_done; | |
5025 | /* Stop. */ | |
5026 | break; | |
60e1c644 PA |
5027 | case WP_IGNORE: |
5028 | bs->print_it = print_it_noop; | |
5029 | bs->stop = 0; | |
5030 | break; | |
18a18393 | 5031 | case WP_VALUE_CHANGED: |
c1fc2657 | 5032 | if (b->type == bp_read_watchpoint) |
18a18393 | 5033 | { |
85d721b8 PA |
5034 | /* There are two cases to consider here: |
5035 | ||
4a64f543 | 5036 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5037 | In that case, trust the target, and always report |
5038 | the watchpoint hit to the user. Even though | |
5039 | reads don't cause value changes, the value may | |
5040 | have changed since the last time it was read, and | |
5041 | since we're not trapping writes, we will not see | |
5042 | those, and as such we should ignore our notion of | |
5043 | old value. | |
5044 | ||
4a64f543 | 5045 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5046 | reads and writes. There are two ways this may |
5047 | happen: | |
5048 | ||
4a64f543 | 5049 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5050 | reads only, but can break on accesses (reads or |
5051 | writes), such as e.g., x86. We detect this case | |
5052 | at the time we try to insert read watchpoints. | |
5053 | ||
4a64f543 | 5054 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5055 | watchpoints, but, the user set an access or write |
5056 | watchpoint watching the same memory as this read | |
5057 | watchpoint. | |
5058 | ||
5059 | If we're watching memory writes as well as reads, | |
5060 | ignore watchpoint hits when we find that the | |
5061 | value hasn't changed, as reads don't cause | |
5062 | changes. This still gives false positives when | |
5063 | the program writes the same value to memory as | |
5064 | what there was already in memory (we will confuse | |
5065 | it for a read), but it's much better than | |
5066 | nothing. */ | |
5067 | ||
5068 | int other_write_watchpoint = 0; | |
5069 | ||
5070 | if (bl->watchpoint_type == hw_read) | |
5071 | { | |
5072 | struct breakpoint *other_b; | |
5073 | ||
5074 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5075 | if (other_b->type == bp_hardware_watchpoint |
5076 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5077 | { |
3a5c3e22 PA |
5078 | struct watchpoint *other_w = |
5079 | (struct watchpoint *) other_b; | |
5080 | ||
5081 | if (other_w->watchpoint_triggered | |
5082 | == watch_triggered_yes) | |
5083 | { | |
5084 | other_write_watchpoint = 1; | |
5085 | break; | |
5086 | } | |
85d721b8 PA |
5087 | } |
5088 | } | |
5089 | ||
5090 | if (other_write_watchpoint | |
5091 | || bl->watchpoint_type == hw_access) | |
5092 | { | |
5093 | /* We're watching the same memory for writes, | |
5094 | and the value changed since the last time we | |
5095 | updated it, so this trap must be for a write. | |
5096 | Ignore it. */ | |
5097 | bs->print_it = print_it_noop; | |
5098 | bs->stop = 0; | |
5099 | } | |
18a18393 VP |
5100 | } |
5101 | break; | |
5102 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5103 | if (b->type == bp_hardware_watchpoint |
5104 | || b->type == bp_watchpoint) | |
18a18393 VP |
5105 | { |
5106 | /* Don't stop: write watchpoints shouldn't fire if | |
5107 | the value hasn't changed. */ | |
5108 | bs->print_it = print_it_noop; | |
5109 | bs->stop = 0; | |
5110 | } | |
5111 | /* Stop. */ | |
5112 | break; | |
5113 | default: | |
5114 | /* Can't happen. */ | |
18a18393 VP |
5115 | break; |
5116 | } | |
5117 | } | |
5118 | else /* must_check_value == 0 */ | |
5119 | { | |
5120 | /* This is a case where some watchpoint(s) triggered, but | |
5121 | not at the address of this watchpoint, or else no | |
5122 | watchpoint triggered after all. So don't print | |
5123 | anything for this watchpoint. */ | |
5124 | bs->print_it = print_it_noop; | |
5125 | bs->stop = 0; | |
5126 | } | |
5127 | } | |
5128 | } | |
5129 | ||
7d4df6a4 DE |
5130 | /* For breakpoints that are currently marked as telling gdb to stop, |
5131 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5132 | of breakpoint referred to by BS. If we should not stop for this |
5133 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5134 | |
18a18393 | 5135 | static void |
00431a78 | 5136 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5137 | { |
2bdf28a0 JK |
5138 | const struct bp_location *bl; |
5139 | struct breakpoint *b; | |
bf469271 PA |
5140 | /* Assume stop. */ |
5141 | bool condition_result = true; | |
7d4df6a4 DE |
5142 | struct expression *cond; |
5143 | ||
5144 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5145 | |
5146 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5147 | bl = bs->bp_location_at; |
2bdf28a0 | 5148 | gdb_assert (bl != NULL); |
f431efe5 | 5149 | b = bs->breakpoint_at; |
2bdf28a0 | 5150 | gdb_assert (b != NULL); |
18a18393 | 5151 | |
b775012e LM |
5152 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5153 | need to do so again since GDB does not know if we stopped due to a | |
5154 | breakpoint or a single step breakpoint. */ | |
5155 | ||
18a18393 | 5156 | if (frame_id_p (b->frame_id) |
edb3359d | 5157 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5158 | { |
7d4df6a4 DE |
5159 | bs->stop = 0; |
5160 | return; | |
5161 | } | |
60e1c644 | 5162 | |
12ab52e9 PA |
5163 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5164 | evaluating the condition if this isn't the specified | |
5165 | thread/task. */ | |
00431a78 PA |
5166 | if ((b->thread != -1 && b->thread != thread->global_num) |
5167 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5168 | { |
5169 | bs->stop = 0; | |
5170 | return; | |
5171 | } | |
5172 | ||
6dddc817 DE |
5173 | /* Evaluate extension language breakpoints that have a "stop" method |
5174 | implemented. */ | |
5175 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5176 | |
7d4df6a4 DE |
5177 | if (is_watchpoint (b)) |
5178 | { | |
5179 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5180 | |
4d01a485 | 5181 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5182 | } |
5183 | else | |
4d01a485 | 5184 | cond = bl->cond.get (); |
60e1c644 | 5185 | |
7d4df6a4 DE |
5186 | if (cond && b->disposition != disp_del_at_next_stop) |
5187 | { | |
5188 | int within_current_scope = 1; | |
5189 | struct watchpoint * w; | |
60e1c644 | 5190 | |
7d4df6a4 DE |
5191 | /* We use value_mark and value_free_to_mark because it could |
5192 | be a long time before we return to the command level and | |
5193 | call free_all_values. We can't call free_all_values | |
5194 | because we might be in the middle of evaluating a | |
5195 | function call. */ | |
5196 | struct value *mark = value_mark (); | |
5197 | ||
5198 | if (is_watchpoint (b)) | |
5199 | w = (struct watchpoint *) b; | |
5200 | else | |
5201 | w = NULL; | |
5202 | ||
5203 | /* Need to select the frame, with all that implies so that | |
5204 | the conditions will have the right context. Because we | |
5205 | use the frame, we will not see an inlined function's | |
5206 | variables when we arrive at a breakpoint at the start | |
5207 | of the inlined function; the current frame will be the | |
5208 | call site. */ | |
5209 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5210 | select_frame (get_current_frame ()); | |
5211 | else | |
18a18393 | 5212 | { |
7d4df6a4 DE |
5213 | struct frame_info *frame; |
5214 | ||
5215 | /* For local watchpoint expressions, which particular | |
5216 | instance of a local is being watched matters, so we | |
5217 | keep track of the frame to evaluate the expression | |
5218 | in. To evaluate the condition however, it doesn't | |
5219 | really matter which instantiation of the function | |
5220 | where the condition makes sense triggers the | |
5221 | watchpoint. This allows an expression like "watch | |
5222 | global if q > 10" set in `func', catch writes to | |
5223 | global on all threads that call `func', or catch | |
5224 | writes on all recursive calls of `func' by a single | |
5225 | thread. We simply always evaluate the condition in | |
5226 | the innermost frame that's executing where it makes | |
5227 | sense to evaluate the condition. It seems | |
5228 | intuitive. */ | |
5229 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5230 | if (frame != NULL) | |
5231 | select_frame (frame); | |
5232 | else | |
5233 | within_current_scope = 0; | |
18a18393 | 5234 | } |
7d4df6a4 | 5235 | if (within_current_scope) |
bf469271 | 5236 | { |
a70b8144 | 5237 | try |
bf469271 PA |
5238 | { |
5239 | condition_result = breakpoint_cond_eval (cond); | |
5240 | } | |
230d2906 | 5241 | catch (const gdb_exception &ex) |
bf469271 PA |
5242 | { |
5243 | exception_fprintf (gdb_stderr, ex, | |
5244 | "Error in testing breakpoint condition:\n"); | |
5245 | } | |
bf469271 | 5246 | } |
7d4df6a4 | 5247 | else |
18a18393 | 5248 | { |
7d4df6a4 DE |
5249 | warning (_("Watchpoint condition cannot be tested " |
5250 | "in the current scope")); | |
5251 | /* If we failed to set the right context for this | |
5252 | watchpoint, unconditionally report it. */ | |
18a18393 | 5253 | } |
7d4df6a4 DE |
5254 | /* FIXME-someday, should give breakpoint #. */ |
5255 | value_free_to_mark (mark); | |
18a18393 | 5256 | } |
7d4df6a4 | 5257 | |
bf469271 | 5258 | if (cond && !condition_result) |
7d4df6a4 DE |
5259 | { |
5260 | bs->stop = 0; | |
5261 | } | |
7d4df6a4 DE |
5262 | else if (b->ignore_count > 0) |
5263 | { | |
5264 | b->ignore_count--; | |
5265 | bs->stop = 0; | |
5266 | /* Increase the hit count even though we don't stop. */ | |
5267 | ++(b->hit_count); | |
76727919 | 5268 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5269 | } |
18a18393 VP |
5270 | } |
5271 | ||
1cf4d951 PA |
5272 | /* Returns true if we need to track moribund locations of LOC's type |
5273 | on the current target. */ | |
5274 | ||
5275 | static int | |
5276 | need_moribund_for_location_type (struct bp_location *loc) | |
5277 | { | |
5278 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5279 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5280 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5281 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5282 | } | |
5283 | ||
ddfe970e | 5284 | /* See breakpoint.h. */ |
c906108c SS |
5285 | |
5286 | bpstat | |
ddfe970e | 5287 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5288 | const struct target_waitstatus *ws) |
c906108c | 5289 | { |
ddfe970e | 5290 | struct breakpoint *b; |
5760d0ab | 5291 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5292 | |
429374b8 JK |
5293 | ALL_BREAKPOINTS (b) |
5294 | { | |
1a853c52 | 5295 | if (!breakpoint_enabled (b)) |
429374b8 | 5296 | continue; |
a5606eee | 5297 | |
ddfe970e | 5298 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5299 | { |
4a64f543 MS |
5300 | /* For hardware watchpoints, we look only at the first |
5301 | location. The watchpoint_check function will work on the | |
5302 | entire expression, not the individual locations. For | |
5303 | read watchpoints, the watchpoints_triggered function has | |
5304 | checked all locations already. */ | |
429374b8 JK |
5305 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5306 | break; | |
18a18393 | 5307 | |
f6592439 | 5308 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5309 | continue; |
c5aa993b | 5310 | |
09ac7c10 | 5311 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5312 | continue; |
c5aa993b | 5313 | |
4a64f543 MS |
5314 | /* Come here if it's a watchpoint, or if the break address |
5315 | matches. */ | |
c5aa993b | 5316 | |
ddfe970e KS |
5317 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5318 | explain stop. */ | |
c5aa993b | 5319 | |
f431efe5 PA |
5320 | /* Assume we stop. Should we find a watchpoint that is not |
5321 | actually triggered, or if the condition of the breakpoint | |
5322 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5323 | bs->stop = 1; |
5324 | bs->print = 1; | |
d983da9c | 5325 | |
f431efe5 PA |
5326 | /* If this is a scope breakpoint, mark the associated |
5327 | watchpoint as triggered so that we will handle the | |
5328 | out-of-scope event. We'll get to the watchpoint next | |
5329 | iteration. */ | |
d0fb5eae | 5330 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5331 | { |
5332 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5333 | ||
5334 | w->watchpoint_triggered = watch_triggered_yes; | |
5335 | } | |
f431efe5 PA |
5336 | } |
5337 | } | |
5338 | ||
7c16b83e | 5339 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5340 | if (!target_supports_stopped_by_sw_breakpoint () |
5341 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5342 | { |
1123588c | 5343 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5344 | { |
1cf4d951 PA |
5345 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5346 | && need_moribund_for_location_type (loc)) | |
5347 | { | |
ddfe970e | 5348 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5349 | /* For hits of moribund locations, we should just proceed. */ |
5350 | bs->stop = 0; | |
5351 | bs->print = 0; | |
5352 | bs->print_it = print_it_noop; | |
5353 | } | |
f431efe5 PA |
5354 | } |
5355 | } | |
5356 | ||
ddfe970e KS |
5357 | return bs_head; |
5358 | } | |
5359 | ||
5360 | /* See breakpoint.h. */ | |
5361 | ||
5362 | bpstat | |
5363 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5364 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5365 | const struct target_waitstatus *ws, |
5366 | bpstat stop_chain) | |
5367 | { | |
5368 | struct breakpoint *b = NULL; | |
5369 | /* First item of allocated bpstat's. */ | |
5370 | bpstat bs_head = stop_chain; | |
5371 | bpstat bs; | |
5372 | int need_remove_insert; | |
5373 | int removed_any; | |
5374 | ||
5375 | /* First, build the bpstat chain with locations that explain a | |
5376 | target stop, while being careful to not set the target running, | |
5377 | as that may invalidate locations (in particular watchpoint | |
5378 | locations are recreated). Resuming will happen here with | |
5379 | breakpoint conditions or watchpoint expressions that include | |
5380 | inferior function calls. */ | |
5381 | if (bs_head == NULL) | |
5382 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5383 | ||
edcc5120 TT |
5384 | /* A bit of special processing for shlib breakpoints. We need to |
5385 | process solib loading here, so that the lists of loaded and | |
5386 | unloaded libraries are correct before we handle "catch load" and | |
5387 | "catch unload". */ | |
5388 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5389 | { | |
5d268276 | 5390 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5391 | { |
5392 | handle_solib_event (); | |
5393 | break; | |
5394 | } | |
5395 | } | |
5396 | ||
f431efe5 PA |
5397 | /* Now go through the locations that caused the target to stop, and |
5398 | check whether we're interested in reporting this stop to higher | |
5399 | layers, or whether we should resume the target transparently. */ | |
5400 | ||
5401 | removed_any = 0; | |
5402 | ||
5760d0ab | 5403 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5404 | { |
5405 | if (!bs->stop) | |
5406 | continue; | |
5407 | ||
f431efe5 | 5408 | b = bs->breakpoint_at; |
348d480f PA |
5409 | b->ops->check_status (bs); |
5410 | if (bs->stop) | |
28010a5d | 5411 | { |
00431a78 | 5412 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5413 | |
429374b8 JK |
5414 | if (bs->stop) |
5415 | { | |
5416 | ++(b->hit_count); | |
76727919 | 5417 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5418 | |
4a64f543 | 5419 | /* We will stop here. */ |
429374b8 JK |
5420 | if (b->disposition == disp_disable) |
5421 | { | |
816338b5 | 5422 | --(b->enable_count); |
1a853c52 | 5423 | if (b->enable_count <= 0) |
429374b8 | 5424 | b->enable_state = bp_disabled; |
f431efe5 | 5425 | removed_any = 1; |
429374b8 JK |
5426 | } |
5427 | if (b->silent) | |
5428 | bs->print = 0; | |
5429 | bs->commands = b->commands; | |
abf85f46 | 5430 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5431 | ? bs->commands.get () : NULL)) |
abf85f46 | 5432 | bs->print = 0; |
9d6e6e84 HZ |
5433 | |
5434 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5435 | } |
5436 | ||
348d480f | 5437 | } |
a9b3a50f PA |
5438 | |
5439 | /* Print nothing for this entry if we don't stop or don't | |
5440 | print. */ | |
5441 | if (!bs->stop || !bs->print) | |
5442 | bs->print_it = print_it_noop; | |
429374b8 | 5443 | } |
876fa593 | 5444 | |
d983da9c DJ |
5445 | /* If we aren't stopping, the value of some hardware watchpoint may |
5446 | not have changed, but the intermediate memory locations we are | |
5447 | watching may have. Don't bother if we're stopping; this will get | |
5448 | done later. */ | |
d832cb68 | 5449 | need_remove_insert = 0; |
5760d0ab JK |
5450 | if (! bpstat_causes_stop (bs_head)) |
5451 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5452 | if (!bs->stop |
f431efe5 PA |
5453 | && bs->breakpoint_at |
5454 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5455 | { |
3a5c3e22 PA |
5456 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5457 | ||
5458 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5459 | need_remove_insert = 1; |
d983da9c DJ |
5460 | } |
5461 | ||
d832cb68 | 5462 | if (need_remove_insert) |
44702360 | 5463 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5464 | else if (removed_any) |
44702360 | 5465 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5466 | |
5760d0ab | 5467 | return bs_head; |
c906108c | 5468 | } |
628fe4e4 JK |
5469 | |
5470 | static void | |
5471 | handle_jit_event (void) | |
5472 | { | |
5473 | struct frame_info *frame; | |
5474 | struct gdbarch *gdbarch; | |
5475 | ||
243a9253 PA |
5476 | if (debug_infrun) |
5477 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5478 | ||
628fe4e4 JK |
5479 | /* Switch terminal for any messages produced by |
5480 | breakpoint_re_set. */ | |
223ffa71 | 5481 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5482 | |
5483 | frame = get_current_frame (); | |
5484 | gdbarch = get_frame_arch (frame); | |
5485 | ||
5486 | jit_event_handler (gdbarch); | |
5487 | ||
223ffa71 | 5488 | target_terminal::inferior (); |
628fe4e4 JK |
5489 | } |
5490 | ||
5491 | /* Prepare WHAT final decision for infrun. */ | |
5492 | ||
5493 | /* Decide what infrun needs to do with this bpstat. */ | |
5494 | ||
c906108c | 5495 | struct bpstat_what |
0e30163f | 5496 | bpstat_what (bpstat bs_head) |
c906108c | 5497 | { |
c906108c | 5498 | struct bpstat_what retval; |
0e30163f | 5499 | bpstat bs; |
c906108c | 5500 | |
628fe4e4 | 5501 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5502 | retval.call_dummy = STOP_NONE; |
186c406b | 5503 | retval.is_longjmp = 0; |
628fe4e4 | 5504 | |
0e30163f | 5505 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5506 | { |
628fe4e4 JK |
5507 | /* Extract this BS's action. After processing each BS, we check |
5508 | if its action overrides all we've seem so far. */ | |
5509 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5510 | enum bptype bptype; | |
5511 | ||
c906108c | 5512 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5513 | { |
5514 | /* I suspect this can happen if it was a momentary | |
5515 | breakpoint which has since been deleted. */ | |
5516 | bptype = bp_none; | |
5517 | } | |
20874c92 | 5518 | else |
f431efe5 | 5519 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5520 | |
5521 | switch (bptype) | |
c906108c SS |
5522 | { |
5523 | case bp_none: | |
628fe4e4 | 5524 | break; |
c906108c SS |
5525 | case bp_breakpoint: |
5526 | case bp_hardware_breakpoint: | |
7c16b83e | 5527 | case bp_single_step: |
c906108c SS |
5528 | case bp_until: |
5529 | case bp_finish: | |
a9b3a50f | 5530 | case bp_shlib_event: |
c906108c SS |
5531 | if (bs->stop) |
5532 | { | |
5533 | if (bs->print) | |
628fe4e4 | 5534 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5535 | else |
628fe4e4 | 5536 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5537 | } |
5538 | else | |
628fe4e4 | 5539 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5540 | break; |
5541 | case bp_watchpoint: | |
5542 | case bp_hardware_watchpoint: | |
5543 | case bp_read_watchpoint: | |
5544 | case bp_access_watchpoint: | |
5545 | if (bs->stop) | |
5546 | { | |
5547 | if (bs->print) | |
628fe4e4 | 5548 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5549 | else |
628fe4e4 | 5550 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5551 | } |
5552 | else | |
628fe4e4 JK |
5553 | { |
5554 | /* There was a watchpoint, but we're not stopping. | |
5555 | This requires no further action. */ | |
5556 | } | |
c906108c SS |
5557 | break; |
5558 | case bp_longjmp: | |
e2e4d78b | 5559 | case bp_longjmp_call_dummy: |
186c406b | 5560 | case bp_exception: |
0a39bb32 PA |
5561 | if (bs->stop) |
5562 | { | |
5563 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5564 | retval.is_longjmp = bptype != bp_exception; | |
5565 | } | |
5566 | else | |
5567 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5568 | break; |
5569 | case bp_longjmp_resume: | |
186c406b | 5570 | case bp_exception_resume: |
0a39bb32 PA |
5571 | if (bs->stop) |
5572 | { | |
5573 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5574 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5575 | } | |
5576 | else | |
5577 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5578 | break; |
5579 | case bp_step_resume: | |
5580 | if (bs->stop) | |
628fe4e4 JK |
5581 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5582 | else | |
c906108c | 5583 | { |
628fe4e4 JK |
5584 | /* It is for the wrong frame. */ |
5585 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5586 | } |
c906108c | 5587 | break; |
2c03e5be PA |
5588 | case bp_hp_step_resume: |
5589 | if (bs->stop) | |
5590 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5591 | else | |
5592 | { | |
5593 | /* It is for the wrong frame. */ | |
5594 | this_action = BPSTAT_WHAT_SINGLE; | |
5595 | } | |
5596 | break; | |
c906108c | 5597 | case bp_watchpoint_scope: |
c4093a6a | 5598 | case bp_thread_event: |
1900040c | 5599 | case bp_overlay_event: |
0fd8e87f | 5600 | case bp_longjmp_master: |
aa7d318d | 5601 | case bp_std_terminate_master: |
186c406b | 5602 | case bp_exception_master: |
628fe4e4 | 5603 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5604 | break; |
ce78b96d | 5605 | case bp_catchpoint: |
c5aa993b JM |
5606 | if (bs->stop) |
5607 | { | |
5608 | if (bs->print) | |
628fe4e4 | 5609 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5610 | else |
628fe4e4 | 5611 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5612 | } |
5613 | else | |
628fe4e4 JK |
5614 | { |
5615 | /* There was a catchpoint, but we're not stopping. | |
5616 | This requires no further action. */ | |
5617 | } | |
5618 | break; | |
628fe4e4 | 5619 | case bp_jit_event: |
628fe4e4 | 5620 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5621 | break; |
c906108c | 5622 | case bp_call_dummy: |
53a5351d JM |
5623 | /* Make sure the action is stop (silent or noisy), |
5624 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5625 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5626 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5627 | break; |
5628 | case bp_std_terminate: | |
5629 | /* Make sure the action is stop (silent or noisy), | |
5630 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5631 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5632 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5633 | break; |
1042e4c0 | 5634 | case bp_tracepoint: |
7a697b8d | 5635 | case bp_fast_tracepoint: |
0fb4aa4b | 5636 | case bp_static_tracepoint: |
1042e4c0 SS |
5637 | /* Tracepoint hits should not be reported back to GDB, and |
5638 | if one got through somehow, it should have been filtered | |
5639 | out already. */ | |
5640 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5641 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5642 | break; |
5643 | case bp_gnu_ifunc_resolver: | |
5644 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5645 | this_action = BPSTAT_WHAT_SINGLE; | |
5646 | break; | |
5647 | case bp_gnu_ifunc_resolver_return: | |
5648 | /* The breakpoint will be removed, execution will restart from the | |
5649 | PC of the former breakpoint. */ | |
5650 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5651 | break; | |
e7e0cddf SS |
5652 | |
5653 | case bp_dprintf: | |
a11cfd87 HZ |
5654 | if (bs->stop) |
5655 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5656 | else | |
5657 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5658 | break; |
5659 | ||
628fe4e4 JK |
5660 | default: |
5661 | internal_error (__FILE__, __LINE__, | |
5662 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5663 | } |
628fe4e4 | 5664 | |
325fac50 | 5665 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5666 | } |
628fe4e4 | 5667 | |
243a9253 PA |
5668 | return retval; |
5669 | } | |
628fe4e4 | 5670 | |
243a9253 PA |
5671 | void |
5672 | bpstat_run_callbacks (bpstat bs_head) | |
5673 | { | |
5674 | bpstat bs; | |
628fe4e4 | 5675 | |
0e30163f JK |
5676 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5677 | { | |
5678 | struct breakpoint *b = bs->breakpoint_at; | |
5679 | ||
5680 | if (b == NULL) | |
5681 | continue; | |
5682 | switch (b->type) | |
5683 | { | |
243a9253 PA |
5684 | case bp_jit_event: |
5685 | handle_jit_event (); | |
5686 | break; | |
0e30163f JK |
5687 | case bp_gnu_ifunc_resolver: |
5688 | gnu_ifunc_resolver_stop (b); | |
5689 | break; | |
5690 | case bp_gnu_ifunc_resolver_return: | |
5691 | gnu_ifunc_resolver_return_stop (b); | |
5692 | break; | |
5693 | } | |
5694 | } | |
c906108c SS |
5695 | } |
5696 | ||
5697 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5698 | without hardware support). This isn't related to a specific bpstat, | |
5699 | just to things like whether watchpoints are set. */ | |
5700 | ||
c5aa993b | 5701 | int |
fba45db2 | 5702 | bpstat_should_step (void) |
c906108c SS |
5703 | { |
5704 | struct breakpoint *b; | |
cc59ec59 | 5705 | |
c906108c | 5706 | ALL_BREAKPOINTS (b) |
717a8278 | 5707 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5708 | return 1; |
c906108c SS |
5709 | return 0; |
5710 | } | |
5711 | ||
67822962 PA |
5712 | int |
5713 | bpstat_causes_stop (bpstat bs) | |
5714 | { | |
5715 | for (; bs != NULL; bs = bs->next) | |
5716 | if (bs->stop) | |
5717 | return 1; | |
5718 | ||
5719 | return 0; | |
5720 | } | |
5721 | ||
c906108c | 5722 | \f |
c5aa993b | 5723 | |
170b53b2 UW |
5724 | /* Compute a string of spaces suitable to indent the next line |
5725 | so it starts at the position corresponding to the table column | |
5726 | named COL_NAME in the currently active table of UIOUT. */ | |
5727 | ||
5728 | static char * | |
5729 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5730 | { | |
5731 | static char wrap_indent[80]; | |
5732 | int i, total_width, width, align; | |
c5209615 | 5733 | const char *text; |
170b53b2 UW |
5734 | |
5735 | total_width = 0; | |
112e8700 | 5736 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5737 | { |
5738 | if (strcmp (text, col_name) == 0) | |
5739 | { | |
5740 | gdb_assert (total_width < sizeof wrap_indent); | |
5741 | memset (wrap_indent, ' ', total_width); | |
5742 | wrap_indent[total_width] = 0; | |
5743 | ||
5744 | return wrap_indent; | |
5745 | } | |
5746 | ||
5747 | total_width += width + 1; | |
5748 | } | |
5749 | ||
5750 | return NULL; | |
5751 | } | |
5752 | ||
b775012e LM |
5753 | /* Determine if the locations of this breakpoint will have their conditions |
5754 | evaluated by the target, host or a mix of both. Returns the following: | |
5755 | ||
5756 | "host": Host evals condition. | |
5757 | "host or target": Host or Target evals condition. | |
5758 | "target": Target evals condition. | |
5759 | */ | |
5760 | ||
5761 | static const char * | |
5762 | bp_condition_evaluator (struct breakpoint *b) | |
5763 | { | |
5764 | struct bp_location *bl; | |
5765 | char host_evals = 0; | |
5766 | char target_evals = 0; | |
5767 | ||
5768 | if (!b) | |
5769 | return NULL; | |
5770 | ||
5771 | if (!is_breakpoint (b)) | |
5772 | return NULL; | |
5773 | ||
5774 | if (gdb_evaluates_breakpoint_condition_p () | |
5775 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5776 | return condition_evaluation_host; | |
5777 | ||
5778 | for (bl = b->loc; bl; bl = bl->next) | |
5779 | { | |
5780 | if (bl->cond_bytecode) | |
5781 | target_evals++; | |
5782 | else | |
5783 | host_evals++; | |
5784 | } | |
5785 | ||
5786 | if (host_evals && target_evals) | |
5787 | return condition_evaluation_both; | |
5788 | else if (target_evals) | |
5789 | return condition_evaluation_target; | |
5790 | else | |
5791 | return condition_evaluation_host; | |
5792 | } | |
5793 | ||
5794 | /* Determine the breakpoint location's condition evaluator. This is | |
5795 | similar to bp_condition_evaluator, but for locations. */ | |
5796 | ||
5797 | static const char * | |
5798 | bp_location_condition_evaluator (struct bp_location *bl) | |
5799 | { | |
5800 | if (bl && !is_breakpoint (bl->owner)) | |
5801 | return NULL; | |
5802 | ||
5803 | if (gdb_evaluates_breakpoint_condition_p () | |
5804 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5805 | return condition_evaluation_host; | |
5806 | ||
5807 | if (bl && bl->cond_bytecode) | |
5808 | return condition_evaluation_target; | |
5809 | else | |
5810 | return condition_evaluation_host; | |
5811 | } | |
5812 | ||
859825b8 JK |
5813 | /* Print the LOC location out of the list of B->LOC locations. */ |
5814 | ||
170b53b2 UW |
5815 | static void |
5816 | print_breakpoint_location (struct breakpoint *b, | |
5817 | struct bp_location *loc) | |
0d381245 | 5818 | { |
79a45e25 | 5819 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5820 | |
5821 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5822 | |
859825b8 JK |
5823 | if (loc != NULL && loc->shlib_disabled) |
5824 | loc = NULL; | |
5825 | ||
6c95b8df PA |
5826 | if (loc != NULL) |
5827 | set_current_program_space (loc->pspace); | |
5828 | ||
56435ebe | 5829 | if (b->display_canonical) |
d28cd78a | 5830 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5831 | else if (loc && loc->symtab) |
0d381245 | 5832 | { |
4a27f119 KS |
5833 | const struct symbol *sym = loc->symbol; |
5834 | ||
0d381245 VP |
5835 | if (sym) |
5836 | { | |
112e8700 | 5837 | uiout->text ("in "); |
cbe56571 TT |
5838 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
5839 | ui_out_style_kind::FUNCTION); | |
112e8700 SM |
5840 | uiout->text (" "); |
5841 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5842 | uiout->text ("at "); | |
0d381245 | 5843 | } |
112e8700 | 5844 | uiout->field_string ("file", |
cbe56571 TT |
5845 | symtab_to_filename_for_display (loc->symtab), |
5846 | ui_out_style_kind::FILE); | |
112e8700 | 5847 | uiout->text (":"); |
05cba821 | 5848 | |
112e8700 SM |
5849 | if (uiout->is_mi_like_p ()) |
5850 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5851 | |
112e8700 | 5852 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5853 | } |
859825b8 | 5854 | else if (loc) |
0d381245 | 5855 | { |
d7e74731 | 5856 | string_file stb; |
170b53b2 | 5857 | |
d7e74731 | 5858 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5859 | demangle, ""); |
112e8700 | 5860 | uiout->field_stream ("at", stb); |
0d381245 | 5861 | } |
859825b8 | 5862 | else |
f00aae0f | 5863 | { |
d28cd78a TT |
5864 | uiout->field_string ("pending", |
5865 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5866 | /* If extra_string is available, it could be holding a condition |
5867 | or dprintf arguments. In either case, make sure it is printed, | |
5868 | too, but only for non-MI streams. */ | |
112e8700 | 5869 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5870 | { |
5871 | if (b->type == bp_dprintf) | |
112e8700 | 5872 | uiout->text (","); |
f00aae0f | 5873 | else |
112e8700 SM |
5874 | uiout->text (" "); |
5875 | uiout->text (b->extra_string); | |
f00aae0f KS |
5876 | } |
5877 | } | |
6c95b8df | 5878 | |
b775012e LM |
5879 | if (loc && is_breakpoint (b) |
5880 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5881 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5882 | { | |
112e8700 SM |
5883 | uiout->text (" ("); |
5884 | uiout->field_string ("evaluated-by", | |
b775012e | 5885 | bp_location_condition_evaluator (loc)); |
112e8700 | 5886 | uiout->text (")"); |
b775012e | 5887 | } |
0d381245 VP |
5888 | } |
5889 | ||
269b11a2 PA |
5890 | static const char * |
5891 | bptype_string (enum bptype type) | |
c906108c | 5892 | { |
c4093a6a JM |
5893 | struct ep_type_description |
5894 | { | |
5895 | enum bptype type; | |
a121b7c1 | 5896 | const char *description; |
c4093a6a JM |
5897 | }; |
5898 | static struct ep_type_description bptypes[] = | |
c906108c | 5899 | { |
c5aa993b JM |
5900 | {bp_none, "?deleted?"}, |
5901 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5902 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5903 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5904 | {bp_until, "until"}, |
5905 | {bp_finish, "finish"}, | |
5906 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5907 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5908 | {bp_read_watchpoint, "read watchpoint"}, |
5909 | {bp_access_watchpoint, "acc watchpoint"}, | |
5910 | {bp_longjmp, "longjmp"}, | |
5911 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5912 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5913 | {bp_exception, "exception"}, |
5914 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5915 | {bp_step_resume, "step resume"}, |
2c03e5be | 5916 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5917 | {bp_watchpoint_scope, "watchpoint scope"}, |
5918 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5919 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5920 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5921 | {bp_thread_event, "thread events"}, |
1900040c | 5922 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5923 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5924 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5925 | {bp_exception_master, "exception master"}, |
ce78b96d | 5926 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5927 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5928 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5929 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5930 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5931 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5932 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5933 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5934 | }; |
269b11a2 PA |
5935 | |
5936 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5937 | || ((int) type != bptypes[(int) type].type)) | |
5938 | internal_error (__FILE__, __LINE__, | |
5939 | _("bptypes table does not describe type #%d."), | |
5940 | (int) type); | |
5941 | ||
5942 | return bptypes[(int) type].description; | |
5943 | } | |
5944 | ||
998580f1 MK |
5945 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5946 | For CLI, prefix the list with the string 'inf'. */ | |
5947 | ||
5948 | static void | |
5949 | output_thread_groups (struct ui_out *uiout, | |
5950 | const char *field_name, | |
5c632425 | 5951 | const std::vector<int> &inf_nums, |
998580f1 MK |
5952 | int mi_only) |
5953 | { | |
112e8700 | 5954 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5955 | |
5956 | /* For backward compatibility, don't display inferiors in CLI unless | |
5957 | there are several. Always display them for MI. */ | |
5958 | if (!is_mi && mi_only) | |
5959 | return; | |
5960 | ||
10f489e5 | 5961 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5962 | |
5c632425 | 5963 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5964 | { |
5965 | if (is_mi) | |
5966 | { | |
5967 | char mi_group[10]; | |
5968 | ||
5c632425 | 5969 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5970 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5971 | } |
5972 | else | |
5973 | { | |
5974 | if (i == 0) | |
112e8700 | 5975 | uiout->text (" inf "); |
998580f1 | 5976 | else |
112e8700 | 5977 | uiout->text (", "); |
998580f1 | 5978 | |
5c632425 | 5979 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
5980 | } |
5981 | } | |
998580f1 MK |
5982 | } |
5983 | ||
269b11a2 PA |
5984 | /* Print B to gdb_stdout. */ |
5985 | ||
5986 | static void | |
5987 | print_one_breakpoint_location (struct breakpoint *b, | |
5988 | struct bp_location *loc, | |
5989 | int loc_number, | |
5990 | struct bp_location **last_loc, | |
269b11a2 PA |
5991 | int allflag) |
5992 | { | |
5993 | struct command_line *l; | |
c2c6d25f | 5994 | static char bpenables[] = "nynny"; |
c906108c | 5995 | |
79a45e25 | 5996 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5997 | int header_of_multiple = 0; |
5998 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5999 | struct value_print_options opts; |
6000 | ||
6001 | get_user_print_options (&opts); | |
0d381245 VP |
6002 | |
6003 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6004 | /* See comment in print_one_breakpoint concerning treatment of |
6005 | breakpoints with single disabled location. */ | |
0d381245 VP |
6006 | if (loc == NULL |
6007 | && (b->loc != NULL | |
6008 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6009 | header_of_multiple = 1; | |
6010 | if (loc == NULL) | |
6011 | loc = b->loc; | |
6012 | ||
c4093a6a JM |
6013 | annotate_record (); |
6014 | ||
6015 | /* 1 */ | |
6016 | annotate_field (0); | |
0d381245 | 6017 | if (part_of_multiple) |
528e1572 | 6018 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6019 | else |
528e1572 | 6020 | uiout->field_int ("number", b->number); |
c4093a6a JM |
6021 | |
6022 | /* 2 */ | |
6023 | annotate_field (1); | |
0d381245 | 6024 | if (part_of_multiple) |
112e8700 | 6025 | uiout->field_skip ("type"); |
269b11a2 | 6026 | else |
112e8700 | 6027 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6028 | |
6029 | /* 3 */ | |
6030 | annotate_field (2); | |
0d381245 | 6031 | if (part_of_multiple) |
112e8700 | 6032 | uiout->field_skip ("disp"); |
0d381245 | 6033 | else |
112e8700 | 6034 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6035 | |
c4093a6a JM |
6036 | /* 4 */ |
6037 | annotate_field (3); | |
0d381245 | 6038 | if (part_of_multiple) |
112e8700 | 6039 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6040 | else |
112e8700 | 6041 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6042 | |
c4093a6a | 6043 | /* 5 and 6 */ |
3086aeae | 6044 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6045 | { |
4a64f543 MS |
6046 | /* Although the print_one can possibly print all locations, |
6047 | calling it here is not likely to get any nice result. So, | |
6048 | make sure there's just one location. */ | |
0d381245 | 6049 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6050 | b->ops->print_one (b, last_loc); |
0d381245 | 6051 | } |
3086aeae DJ |
6052 | else |
6053 | switch (b->type) | |
6054 | { | |
6055 | case bp_none: | |
6056 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6057 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6058 | break; |
c906108c | 6059 | |
3086aeae DJ |
6060 | case bp_watchpoint: |
6061 | case bp_hardware_watchpoint: | |
6062 | case bp_read_watchpoint: | |
6063 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6064 | { |
6065 | struct watchpoint *w = (struct watchpoint *) b; | |
6066 | ||
6067 | /* Field 4, the address, is omitted (which makes the columns | |
6068 | not line up too nicely with the headers, but the effect | |
6069 | is relatively readable). */ | |
6070 | if (opts.addressprint) | |
112e8700 | 6071 | uiout->field_skip ("addr"); |
3a5c3e22 | 6072 | annotate_field (5); |
112e8700 | 6073 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6074 | } |
3086aeae DJ |
6075 | break; |
6076 | ||
3086aeae DJ |
6077 | case bp_breakpoint: |
6078 | case bp_hardware_breakpoint: | |
7c16b83e | 6079 | case bp_single_step: |
3086aeae DJ |
6080 | case bp_until: |
6081 | case bp_finish: | |
6082 | case bp_longjmp: | |
6083 | case bp_longjmp_resume: | |
e2e4d78b | 6084 | case bp_longjmp_call_dummy: |
186c406b TT |
6085 | case bp_exception: |
6086 | case bp_exception_resume: | |
3086aeae | 6087 | case bp_step_resume: |
2c03e5be | 6088 | case bp_hp_step_resume: |
3086aeae DJ |
6089 | case bp_watchpoint_scope: |
6090 | case bp_call_dummy: | |
aa7d318d | 6091 | case bp_std_terminate: |
3086aeae DJ |
6092 | case bp_shlib_event: |
6093 | case bp_thread_event: | |
6094 | case bp_overlay_event: | |
0fd8e87f | 6095 | case bp_longjmp_master: |
aa7d318d | 6096 | case bp_std_terminate_master: |
186c406b | 6097 | case bp_exception_master: |
1042e4c0 | 6098 | case bp_tracepoint: |
7a697b8d | 6099 | case bp_fast_tracepoint: |
0fb4aa4b | 6100 | case bp_static_tracepoint: |
e7e0cddf | 6101 | case bp_dprintf: |
4efc6507 | 6102 | case bp_jit_event: |
0e30163f JK |
6103 | case bp_gnu_ifunc_resolver: |
6104 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6105 | if (opts.addressprint) |
3086aeae DJ |
6106 | { |
6107 | annotate_field (4); | |
54e52265 | 6108 | if (header_of_multiple) |
112e8700 | 6109 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6110 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6111 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6112 | else |
112e8700 | 6113 | uiout->field_core_addr ("addr", |
5af949e3 | 6114 | loc->gdbarch, loc->address); |
3086aeae DJ |
6115 | } |
6116 | annotate_field (5); | |
0d381245 | 6117 | if (!header_of_multiple) |
170b53b2 | 6118 | print_breakpoint_location (b, loc); |
0d381245 | 6119 | if (b->loc) |
a6d9a66e | 6120 | *last_loc = b->loc; |
3086aeae DJ |
6121 | break; |
6122 | } | |
c906108c | 6123 | |
6c95b8df | 6124 | |
998580f1 | 6125 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6126 | { |
5c632425 | 6127 | std::vector<int> inf_nums; |
998580f1 | 6128 | int mi_only = 1; |
6c95b8df | 6129 | |
08036331 | 6130 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6131 | { |
6132 | if (inf->pspace == loc->pspace) | |
5c632425 | 6133 | inf_nums.push_back (inf->num); |
6c95b8df | 6134 | } |
998580f1 MK |
6135 | |
6136 | /* For backward compatibility, don't display inferiors in CLI unless | |
6137 | there are several. Always display for MI. */ | |
6138 | if (allflag | |
6139 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6140 | && (number_of_program_spaces () > 1 | |
6141 | || number_of_inferiors () > 1) | |
6142 | /* LOC is for existing B, it cannot be in | |
6143 | moribund_locations and thus having NULL OWNER. */ | |
6144 | && loc->owner->type != bp_catchpoint)) | |
6145 | mi_only = 0; | |
5c632425 | 6146 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6147 | } |
6148 | ||
4a306c9a | 6149 | if (!part_of_multiple) |
c4093a6a | 6150 | { |
4a306c9a JB |
6151 | if (b->thread != -1) |
6152 | { | |
6153 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6154 | "stop only in" line a little further down. */ |
112e8700 SM |
6155 | uiout->text (" thread "); |
6156 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6157 | } |
6158 | else if (b->task != 0) | |
6159 | { | |
112e8700 SM |
6160 | uiout->text (" task "); |
6161 | uiout->field_int ("task", b->task); | |
4a306c9a | 6162 | } |
c4093a6a | 6163 | } |
f1310107 | 6164 | |
112e8700 | 6165 | uiout->text ("\n"); |
f1310107 | 6166 | |
348d480f | 6167 | if (!part_of_multiple) |
f1310107 TJB |
6168 | b->ops->print_one_detail (b, uiout); |
6169 | ||
0d381245 | 6170 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6171 | { |
6172 | annotate_field (6); | |
112e8700 | 6173 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6174 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6175 | the frame ID. */ |
112e8700 | 6176 | uiout->field_core_addr ("frame", |
5af949e3 | 6177 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6178 | uiout->text ("\n"); |
c4093a6a JM |
6179 | } |
6180 | ||
28010a5d | 6181 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6182 | { |
6183 | annotate_field (7); | |
d77f58be | 6184 | if (is_tracepoint (b)) |
112e8700 | 6185 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6186 | else |
112e8700 SM |
6187 | uiout->text ("\tstop only if "); |
6188 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6189 | |
6190 | /* Print whether the target is doing the breakpoint's condition | |
6191 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6192 | if (is_breakpoint (b) | |
6193 | && breakpoint_condition_evaluation_mode () | |
6194 | == condition_evaluation_target) | |
6195 | { | |
112e8700 SM |
6196 | uiout->text (" ("); |
6197 | uiout->field_string ("evaluated-by", | |
b775012e | 6198 | bp_condition_evaluator (b)); |
112e8700 | 6199 | uiout->text (" evals)"); |
b775012e | 6200 | } |
112e8700 | 6201 | uiout->text ("\n"); |
0101ce28 JJ |
6202 | } |
6203 | ||
0d381245 | 6204 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6205 | { |
4a64f543 | 6206 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6207 | uiout->text ("\tstop only in thread "); |
6208 | if (uiout->is_mi_like_p ()) | |
6209 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6210 | else |
6211 | { | |
6212 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6213 | ||
112e8700 | 6214 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6215 | } |
112e8700 | 6216 | uiout->text ("\n"); |
c4093a6a JM |
6217 | } |
6218 | ||
556ec64d YQ |
6219 | if (!part_of_multiple) |
6220 | { | |
6221 | if (b->hit_count) | |
31f56a27 YQ |
6222 | { |
6223 | /* FIXME should make an annotation for this. */ | |
6224 | if (is_catchpoint (b)) | |
112e8700 | 6225 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6226 | else if (is_tracepoint (b)) |
112e8700 | 6227 | uiout->text ("\ttracepoint"); |
31f56a27 | 6228 | else |
112e8700 SM |
6229 | uiout->text ("\tbreakpoint"); |
6230 | uiout->text (" already hit "); | |
6231 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6232 | if (b->hit_count == 1) |
112e8700 | 6233 | uiout->text (" time\n"); |
31f56a27 | 6234 | else |
112e8700 | 6235 | uiout->text (" times\n"); |
31f56a27 | 6236 | } |
556ec64d YQ |
6237 | else |
6238 | { | |
31f56a27 | 6239 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6240 | if (uiout->is_mi_like_p ()) |
6241 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6242 | } |
6243 | } | |
8b93c638 | 6244 | |
0d381245 | 6245 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6246 | { |
6247 | annotate_field (8); | |
112e8700 SM |
6248 | uiout->text ("\tignore next "); |
6249 | uiout->field_int ("ignore", b->ignore_count); | |
6250 | uiout->text (" hits\n"); | |
c4093a6a | 6251 | } |
059fb39f | 6252 | |
816338b5 SS |
6253 | /* Note that an enable count of 1 corresponds to "enable once" |
6254 | behavior, which is reported by the combination of enablement and | |
6255 | disposition, so we don't need to mention it here. */ | |
6256 | if (!part_of_multiple && b->enable_count > 1) | |
6257 | { | |
6258 | annotate_field (8); | |
112e8700 | 6259 | uiout->text ("\tdisable after "); |
816338b5 SS |
6260 | /* Tweak the wording to clarify that ignore and enable counts |
6261 | are distinct, and have additive effect. */ | |
6262 | if (b->ignore_count) | |
112e8700 | 6263 | uiout->text ("additional "); |
816338b5 | 6264 | else |
112e8700 SM |
6265 | uiout->text ("next "); |
6266 | uiout->field_int ("enable", b->enable_count); | |
6267 | uiout->text (" hits\n"); | |
816338b5 SS |
6268 | } |
6269 | ||
f196051f SS |
6270 | if (!part_of_multiple && is_tracepoint (b)) |
6271 | { | |
6272 | struct tracepoint *tp = (struct tracepoint *) b; | |
6273 | ||
6274 | if (tp->traceframe_usage) | |
6275 | { | |
112e8700 SM |
6276 | uiout->text ("\ttrace buffer usage "); |
6277 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6278 | uiout->text (" bytes\n"); | |
f196051f SS |
6279 | } |
6280 | } | |
d3ce09f5 | 6281 | |
d1b0a7bf | 6282 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6283 | if (!part_of_multiple && l) |
c4093a6a JM |
6284 | { |
6285 | annotate_field (9); | |
2e783024 | 6286 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6287 | print_command_lines (uiout, l, 4); |
c4093a6a | 6288 | } |
d24317b4 | 6289 | |
d9b3f62e | 6290 | if (is_tracepoint (b)) |
1042e4c0 | 6291 | { |
d9b3f62e PA |
6292 | struct tracepoint *t = (struct tracepoint *) b; |
6293 | ||
6294 | if (!part_of_multiple && t->pass_count) | |
6295 | { | |
6296 | annotate_field (10); | |
112e8700 SM |
6297 | uiout->text ("\tpass count "); |
6298 | uiout->field_int ("pass", t->pass_count); | |
6299 | uiout->text (" \n"); | |
d9b3f62e | 6300 | } |
f2a8bc8a YQ |
6301 | |
6302 | /* Don't display it when tracepoint or tracepoint location is | |
6303 | pending. */ | |
6304 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6305 | { | |
6306 | annotate_field (11); | |
6307 | ||
112e8700 SM |
6308 | if (uiout->is_mi_like_p ()) |
6309 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6310 | loc->inserted ? "y" : "n"); |
6311 | else | |
6312 | { | |
6313 | if (loc->inserted) | |
112e8700 | 6314 | uiout->text ("\t"); |
f2a8bc8a | 6315 | else |
112e8700 SM |
6316 | uiout->text ("\tnot "); |
6317 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6318 | } |
6319 | } | |
1042e4c0 SS |
6320 | } |
6321 | ||
112e8700 | 6322 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6323 | { |
3a5c3e22 PA |
6324 | if (is_watchpoint (b)) |
6325 | { | |
6326 | struct watchpoint *w = (struct watchpoint *) b; | |
6327 | ||
112e8700 | 6328 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6329 | } |
f00aae0f | 6330 | else if (b->location != NULL |
d28cd78a | 6331 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6332 | uiout->field_string ("original-location", |
d28cd78a | 6333 | event_location_to_string (b->location.get ())); |
d24317b4 | 6334 | } |
c4093a6a | 6335 | } |
c5aa993b | 6336 | |
13674803 SM |
6337 | /* See breakpoint.h. */ |
6338 | ||
6339 | bool fix_multi_location_breakpoint_output_globally = false; | |
6340 | ||
0d381245 VP |
6341 | static void |
6342 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6343 | struct bp_location **last_loc, |
6c95b8df | 6344 | int allflag) |
0d381245 | 6345 | { |
79a45e25 | 6346 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6347 | bool use_fixed_output |
6348 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6349 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6350 | |
b4be1b06 SM |
6351 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
6352 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); | |
8d3788bd | 6353 | |
b4be1b06 SM |
6354 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6355 | are outside. */ | |
6356 | if (!use_fixed_output) | |
6357 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6358 | |
6359 | /* If this breakpoint has custom print function, | |
6360 | it's already printed. Otherwise, print individual | |
6361 | locations, if any. */ | |
6362 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6363 | { | |
4a64f543 MS |
6364 | /* If breakpoint has a single location that is disabled, we |
6365 | print it as if it had several locations, since otherwise it's | |
6366 | hard to represent "breakpoint enabled, location disabled" | |
6367 | situation. | |
6368 | ||
6369 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6370 | internally, that's not a property exposed to user. */ |
0d381245 | 6371 | if (b->loc |
a5606eee | 6372 | && !is_hardware_watchpoint (b) |
8d3788bd | 6373 | && (b->loc->next || !b->loc->enabled)) |
0d381245 | 6374 | { |
b4be1b06 SM |
6375 | gdb::optional<ui_out_emit_list> locations_list; |
6376 | ||
6377 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6378 | MI record. For later versions, place breakpoint locations in a | |
6379 | list. */ | |
6380 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6381 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6382 | |
b4be1b06 SM |
6383 | int n = 1; |
6384 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6385 | { |
b4be1b06 | 6386 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
8d3788bd | 6387 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6388 | } |
0d381245 VP |
6389 | } |
6390 | } | |
6391 | } | |
6392 | ||
a6d9a66e UW |
6393 | static int |
6394 | breakpoint_address_bits (struct breakpoint *b) | |
6395 | { | |
6396 | int print_address_bits = 0; | |
6397 | struct bp_location *loc; | |
6398 | ||
c6d81124 PA |
6399 | /* Software watchpoints that aren't watching memory don't have an |
6400 | address to print. */ | |
6401 | if (is_no_memory_software_watchpoint (b)) | |
6402 | return 0; | |
6403 | ||
a6d9a66e UW |
6404 | for (loc = b->loc; loc; loc = loc->next) |
6405 | { | |
c7437ca6 PA |
6406 | int addr_bit; |
6407 | ||
c7437ca6 | 6408 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6409 | if (addr_bit > print_address_bits) |
6410 | print_address_bits = addr_bit; | |
6411 | } | |
6412 | ||
6413 | return print_address_bits; | |
6414 | } | |
0d381245 | 6415 | |
65630365 | 6416 | /* See breakpoint.h. */ |
c5aa993b | 6417 | |
65630365 PA |
6418 | void |
6419 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6420 | { |
a6d9a66e | 6421 | struct bp_location *dummy_loc = NULL; |
65630365 | 6422 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6423 | } |
c5aa993b | 6424 | |
09d682a4 TT |
6425 | /* Return true if this breakpoint was set by the user, false if it is |
6426 | internal or momentary. */ | |
6427 | ||
6428 | int | |
6429 | user_breakpoint_p (struct breakpoint *b) | |
6430 | { | |
46c6471b | 6431 | return b->number > 0; |
09d682a4 TT |
6432 | } |
6433 | ||
93daf339 TT |
6434 | /* See breakpoint.h. */ |
6435 | ||
6436 | int | |
6437 | pending_breakpoint_p (struct breakpoint *b) | |
6438 | { | |
6439 | return b->loc == NULL; | |
6440 | } | |
6441 | ||
7f3b0473 | 6442 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6443 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6444 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6445 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6446 | ones for which it returns non-zero. Return the total number of | |
6447 | breakpoints listed. */ | |
c906108c | 6448 | |
d77f58be | 6449 | static int |
4495129a | 6450 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6451 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6452 | { |
52f0bd74 | 6453 | struct breakpoint *b; |
a6d9a66e | 6454 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6455 | int nr_printable_breakpoints; |
79a45b7d | 6456 | struct value_print_options opts; |
a6d9a66e | 6457 | int print_address_bits = 0; |
269b11a2 | 6458 | int print_type_col_width = 14; |
79a45e25 | 6459 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6460 | |
79a45b7d TT |
6461 | get_user_print_options (&opts); |
6462 | ||
4a64f543 MS |
6463 | /* Compute the number of rows in the table, as well as the size |
6464 | required for address fields. */ | |
7f3b0473 AC |
6465 | nr_printable_breakpoints = 0; |
6466 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6467 | { |
6468 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6469 | if (filter && !filter (b)) | |
6470 | continue; | |
6471 | ||
6472 | /* If we have an "args" string, it is a list of breakpoints to | |
6473 | accept. Skip the others. */ | |
6474 | if (args != NULL && *args != '\0') | |
6475 | { | |
6476 | if (allflag && parse_and_eval_long (args) != b->number) | |
6477 | continue; | |
6478 | if (!allflag && !number_is_in_list (args, b->number)) | |
6479 | continue; | |
6480 | } | |
269b11a2 | 6481 | |
e5a67952 MS |
6482 | if (allflag || user_breakpoint_p (b)) |
6483 | { | |
6484 | int addr_bit, type_len; | |
a6d9a66e | 6485 | |
e5a67952 MS |
6486 | addr_bit = breakpoint_address_bits (b); |
6487 | if (addr_bit > print_address_bits) | |
6488 | print_address_bits = addr_bit; | |
269b11a2 | 6489 | |
e5a67952 MS |
6490 | type_len = strlen (bptype_string (b->type)); |
6491 | if (type_len > print_type_col_width) | |
6492 | print_type_col_width = type_len; | |
6493 | ||
6494 | nr_printable_breakpoints++; | |
6495 | } | |
6496 | } | |
7f3b0473 | 6497 | |
4a2b031d TT |
6498 | { |
6499 | ui_out_emit_table table_emitter (uiout, | |
6500 | opts.addressprint ? 6 : 5, | |
6501 | nr_printable_breakpoints, | |
6502 | "BreakpointTable"); | |
6503 | ||
6504 | if (nr_printable_breakpoints > 0) | |
6505 | annotate_breakpoints_headers (); | |
6506 | if (nr_printable_breakpoints > 0) | |
6507 | annotate_field (0); | |
6508 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6509 | if (nr_printable_breakpoints > 0) | |
6510 | annotate_field (1); | |
6511 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6512 | if (nr_printable_breakpoints > 0) | |
6513 | annotate_field (2); | |
6514 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6515 | if (nr_printable_breakpoints > 0) | |
6516 | annotate_field (3); | |
6517 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6518 | if (opts.addressprint) | |
6519 | { | |
6520 | if (nr_printable_breakpoints > 0) | |
6521 | annotate_field (4); | |
6522 | if (print_address_bits <= 32) | |
6523 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6524 | else | |
6525 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6526 | } | |
6527 | if (nr_printable_breakpoints > 0) | |
6528 | annotate_field (5); | |
6529 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6530 | uiout->table_body (); | |
6531 | if (nr_printable_breakpoints > 0) | |
6532 | annotate_breakpoints_table (); | |
6533 | ||
6534 | ALL_BREAKPOINTS (b) | |
6535 | { | |
6536 | QUIT; | |
6537 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6538 | if (filter && !filter (b)) | |
6539 | continue; | |
e5a67952 | 6540 | |
4a2b031d TT |
6541 | /* If we have an "args" string, it is a list of breakpoints to |
6542 | accept. Skip the others. */ | |
e5a67952 | 6543 | |
4a2b031d TT |
6544 | if (args != NULL && *args != '\0') |
6545 | { | |
6546 | if (allflag) /* maintenance info breakpoint */ | |
6547 | { | |
6548 | if (parse_and_eval_long (args) != b->number) | |
6549 | continue; | |
6550 | } | |
6551 | else /* all others */ | |
6552 | { | |
6553 | if (!number_is_in_list (args, b->number)) | |
6554 | continue; | |
6555 | } | |
6556 | } | |
6557 | /* We only print out user settable breakpoints unless the | |
6558 | allflag is set. */ | |
6559 | if (allflag || user_breakpoint_p (b)) | |
6560 | print_one_breakpoint (b, &last_loc, allflag); | |
6561 | } | |
6562 | } | |
698384cd | 6563 | |
7f3b0473 | 6564 | if (nr_printable_breakpoints == 0) |
c906108c | 6565 | { |
4a64f543 MS |
6566 | /* If there's a filter, let the caller decide how to report |
6567 | empty list. */ | |
d77f58be SS |
6568 | if (!filter) |
6569 | { | |
e5a67952 | 6570 | if (args == NULL || *args == '\0') |
112e8700 | 6571 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6572 | else |
112e8700 | 6573 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6574 | args); |
d77f58be | 6575 | } |
c906108c SS |
6576 | } |
6577 | else | |
c4093a6a | 6578 | { |
a6d9a66e UW |
6579 | if (last_loc && !server_command) |
6580 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6581 | } |
c906108c | 6582 | |
4a64f543 | 6583 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6584 | there have been breakpoints? */ |
c906108c | 6585 | annotate_breakpoints_table_end (); |
d77f58be SS |
6586 | |
6587 | return nr_printable_breakpoints; | |
c906108c SS |
6588 | } |
6589 | ||
ad443146 SS |
6590 | /* Display the value of default-collect in a way that is generally |
6591 | compatible with the breakpoint list. */ | |
6592 | ||
6593 | static void | |
6594 | default_collect_info (void) | |
6595 | { | |
79a45e25 PA |
6596 | struct ui_out *uiout = current_uiout; |
6597 | ||
ad443146 SS |
6598 | /* If it has no value (which is frequently the case), say nothing; a |
6599 | message like "No default-collect." gets in user's face when it's | |
6600 | not wanted. */ | |
6601 | if (!*default_collect) | |
6602 | return; | |
6603 | ||
6604 | /* The following phrase lines up nicely with per-tracepoint collect | |
6605 | actions. */ | |
112e8700 SM |
6606 | uiout->text ("default collect "); |
6607 | uiout->field_string ("default-collect", default_collect); | |
6608 | uiout->text (" \n"); | |
ad443146 SS |
6609 | } |
6610 | ||
c906108c | 6611 | static void |
0b39b52e | 6612 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6613 | { |
e5a67952 | 6614 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6615 | |
6616 | default_collect_info (); | |
d77f58be SS |
6617 | } |
6618 | ||
6619 | static void | |
1d12d88f | 6620 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6621 | { |
e5a67952 | 6622 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6623 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6624 | |
6625 | if (num_printed == 0) | |
6626 | { | |
e5a67952 | 6627 | if (args == NULL || *args == '\0') |
112e8700 | 6628 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6629 | else |
112e8700 | 6630 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6631 | } |
c906108c SS |
6632 | } |
6633 | ||
7a292a7a | 6634 | static void |
4495129a | 6635 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6636 | { |
e5a67952 | 6637 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6638 | |
6639 | default_collect_info (); | |
c906108c SS |
6640 | } |
6641 | ||
0d381245 | 6642 | static int |
714835d5 | 6643 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6644 | struct program_space *pspace, |
714835d5 | 6645 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6646 | { |
6647 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6648 | |
0d381245 VP |
6649 | for (; bl; bl = bl->next) |
6650 | { | |
6c95b8df PA |
6651 | if (bl->pspace == pspace |
6652 | && bl->address == pc | |
0d381245 VP |
6653 | && (!overlay_debugging || bl->section == section)) |
6654 | return 1; | |
6655 | } | |
6656 | return 0; | |
6657 | } | |
6658 | ||
672f9b60 | 6659 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6660 | concerns with logical breakpoints, so we match program spaces, not |
6661 | address spaces. */ | |
c906108c SS |
6662 | |
6663 | static void | |
6c95b8df PA |
6664 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6665 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6666 | struct obj_section *section, int thread) |
c906108c | 6667 | { |
52f0bd74 AC |
6668 | int others = 0; |
6669 | struct breakpoint *b; | |
c906108c SS |
6670 | |
6671 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6672 | others += (user_breakpoint_p (b) |
6673 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6674 | if (others > 0) |
6675 | { | |
a3f17187 AC |
6676 | if (others == 1) |
6677 | printf_filtered (_("Note: breakpoint ")); | |
6678 | else /* if (others == ???) */ | |
6679 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6680 | ALL_BREAKPOINTS (b) |
672f9b60 | 6681 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6682 | { |
6683 | others--; | |
6684 | printf_filtered ("%d", b->number); | |
6685 | if (b->thread == -1 && thread != -1) | |
6686 | printf_filtered (" (all threads)"); | |
6687 | else if (b->thread != -1) | |
6688 | printf_filtered (" (thread %d)", b->thread); | |
6689 | printf_filtered ("%s%s ", | |
059fb39f | 6690 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6691 | || b->enable_state == bp_call_disabled) |
0d381245 | 6692 | ? " (disabled)" |
0d381245 VP |
6693 | : ""), |
6694 | (others > 1) ? "," | |
6695 | : ((others == 1) ? " and" : "")); | |
6696 | } | |
a3f17187 | 6697 | printf_filtered (_("also set at pc ")); |
2636d81d | 6698 | fputs_styled (paddress (gdbarch, pc), address_style.style (), gdb_stdout); |
c906108c SS |
6699 | printf_filtered (".\n"); |
6700 | } | |
6701 | } | |
6702 | \f | |
c906108c | 6703 | |
e4f237da | 6704 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6705 | BPT locations. For some breakpoint types, the locations' address members |
6706 | are irrelevant and it makes no sense to attempt to compare them to other | |
6707 | addresses (or use them for any other purpose either). | |
e4f237da | 6708 | |
4a64f543 | 6709 | More specifically, each of the following breakpoint types will |
244558af | 6710 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6711 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6712 | breakpoint location at address zero: |
e4f237da KB |
6713 | |
6714 | bp_watchpoint | |
2d134ed3 PA |
6715 | bp_catchpoint |
6716 | ||
6717 | */ | |
e4f237da KB |
6718 | |
6719 | static int | |
6720 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6721 | { | |
6722 | enum bptype type = bpt->type; | |
6723 | ||
2d134ed3 PA |
6724 | return (type != bp_watchpoint && type != bp_catchpoint); |
6725 | } | |
6726 | ||
6727 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6728 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6729 | ||
6730 | static int | |
4a64f543 MS |
6731 | watchpoint_locations_match (struct bp_location *loc1, |
6732 | struct bp_location *loc2) | |
2d134ed3 | 6733 | { |
3a5c3e22 PA |
6734 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6735 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6736 | ||
6737 | /* Both of them must exist. */ | |
6738 | gdb_assert (w1 != NULL); | |
6739 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6740 | |
4a64f543 MS |
6741 | /* If the target can evaluate the condition expression in hardware, |
6742 | then we we need to insert both watchpoints even if they are at | |
6743 | the same place. Otherwise the watchpoint will only trigger when | |
6744 | the condition of whichever watchpoint was inserted evaluates to | |
6745 | true, not giving a chance for GDB to check the condition of the | |
6746 | other watchpoint. */ | |
3a5c3e22 | 6747 | if ((w1->cond_exp |
4a64f543 MS |
6748 | && target_can_accel_watchpoint_condition (loc1->address, |
6749 | loc1->length, | |
0cf6dd15 | 6750 | loc1->watchpoint_type, |
4d01a485 | 6751 | w1->cond_exp.get ())) |
3a5c3e22 | 6752 | || (w2->cond_exp |
4a64f543 MS |
6753 | && target_can_accel_watchpoint_condition (loc2->address, |
6754 | loc2->length, | |
0cf6dd15 | 6755 | loc2->watchpoint_type, |
4d01a485 | 6756 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6757 | return 0; |
6758 | ||
85d721b8 PA |
6759 | /* Note that this checks the owner's type, not the location's. In |
6760 | case the target does not support read watchpoints, but does | |
6761 | support access watchpoints, we'll have bp_read_watchpoint | |
6762 | watchpoints with hw_access locations. Those should be considered | |
6763 | duplicates of hw_read locations. The hw_read locations will | |
6764 | become hw_access locations later. */ | |
2d134ed3 PA |
6765 | return (loc1->owner->type == loc2->owner->type |
6766 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6767 | && loc1->address == loc2->address | |
6768 | && loc1->length == loc2->length); | |
e4f237da KB |
6769 | } |
6770 | ||
31e77af2 | 6771 | /* See breakpoint.h. */ |
6c95b8df | 6772 | |
31e77af2 | 6773 | int |
accd0bcd YQ |
6774 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6775 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6776 | { |
f5656ead | 6777 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6778 | || aspace1 == aspace2) |
6779 | && addr1 == addr2); | |
6780 | } | |
6781 | ||
f1310107 TJB |
6782 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6783 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6784 | matches ASPACE2. On targets that have global breakpoints, the address | |
6785 | space doesn't really matter. */ | |
6786 | ||
6787 | static int | |
accd0bcd YQ |
6788 | breakpoint_address_match_range (const address_space *aspace1, |
6789 | CORE_ADDR addr1, | |
6790 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6791 | CORE_ADDR addr2) |
6792 | { | |
f5656ead | 6793 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6794 | || aspace1 == aspace2) |
6795 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6796 | } | |
6797 | ||
6798 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6799 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6800 | matches the breakpoint's address space. On targets that have global | |
6801 | breakpoints, the address space doesn't really matter. */ | |
6802 | ||
6803 | static int | |
6804 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6805 | const address_space *aspace, |
f1310107 TJB |
6806 | CORE_ADDR addr) |
6807 | { | |
6808 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6809 | aspace, addr) | |
6810 | || (bl->length | |
6811 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6812 | bl->address, bl->length, | |
6813 | aspace, addr))); | |
6814 | } | |
6815 | ||
d35ae833 PA |
6816 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6817 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6818 | match happens only if ASPACE matches the breakpoint's address | |
6819 | space. On targets that have global breakpoints, the address space | |
6820 | doesn't really matter. */ | |
6821 | ||
6822 | static int | |
6823 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6824 | const address_space *aspace, |
d35ae833 PA |
6825 | CORE_ADDR addr, int len) |
6826 | { | |
6827 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6828 | || bl->pspace->aspace == aspace) | |
6829 | { | |
6830 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6831 | ||
6832 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6833 | return 1; | |
6834 | } | |
6835 | return 0; | |
6836 | } | |
6837 | ||
1e4d1764 YQ |
6838 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6839 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6840 | true, otherwise returns false. */ | |
6841 | ||
6842 | static int | |
6843 | tracepoint_locations_match (struct bp_location *loc1, | |
6844 | struct bp_location *loc2) | |
6845 | { | |
6846 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6847 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6848 | locations at the same address of different tracepoints are regarded as | |
6849 | different locations. */ | |
6850 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6851 | else | |
6852 | return 0; | |
6853 | } | |
6854 | ||
2d134ed3 PA |
6855 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6856 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6857 | represent the same location. */ | |
6858 | ||
6859 | static int | |
4a64f543 MS |
6860 | breakpoint_locations_match (struct bp_location *loc1, |
6861 | struct bp_location *loc2) | |
2d134ed3 | 6862 | { |
2bdf28a0 JK |
6863 | int hw_point1, hw_point2; |
6864 | ||
6865 | /* Both of them must not be in moribund_locations. */ | |
6866 | gdb_assert (loc1->owner != NULL); | |
6867 | gdb_assert (loc2->owner != NULL); | |
6868 | ||
6869 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6870 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6871 | |
6872 | if (hw_point1 != hw_point2) | |
6873 | return 0; | |
6874 | else if (hw_point1) | |
6875 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6876 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6877 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6878 | else |
f1310107 TJB |
6879 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6880 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6881 | loc2->pspace->aspace, loc2->address) | |
6882 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6883 | } |
6884 | ||
76897487 KB |
6885 | static void |
6886 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6887 | int bnum, int have_bnum) | |
6888 | { | |
f63fbe86 MS |
6889 | /* The longest string possibly returned by hex_string_custom |
6890 | is 50 chars. These must be at least that big for safety. */ | |
6891 | char astr1[64]; | |
6892 | char astr2[64]; | |
76897487 | 6893 | |
bb599908 PH |
6894 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6895 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6896 | if (have_bnum) |
8a3fe4f8 | 6897 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6898 | bnum, astr1, astr2); |
6899 | else | |
8a3fe4f8 | 6900 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6901 | } |
6902 | ||
4a64f543 MS |
6903 | /* Adjust a breakpoint's address to account for architectural |
6904 | constraints on breakpoint placement. Return the adjusted address. | |
6905 | Note: Very few targets require this kind of adjustment. For most | |
6906 | targets, this function is simply the identity function. */ | |
76897487 KB |
6907 | |
6908 | static CORE_ADDR | |
a6d9a66e UW |
6909 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6910 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6911 | { |
a0de8c21 YQ |
6912 | if (bptype == bp_watchpoint |
6913 | || bptype == bp_hardware_watchpoint | |
6914 | || bptype == bp_read_watchpoint | |
6915 | || bptype == bp_access_watchpoint | |
6916 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6917 | { |
6918 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6919 | have their addresses modified. */ | |
6920 | return bpaddr; | |
6921 | } | |
7c16b83e PA |
6922 | else if (bptype == bp_single_step) |
6923 | { | |
6924 | /* Single-step breakpoints should not have their addresses | |
6925 | modified. If there's any architectural constrain that | |
6926 | applies to this address, then it should have already been | |
6927 | taken into account when the breakpoint was created in the | |
6928 | first place. If we didn't do this, stepping through e.g., | |
6929 | Thumb-2 IT blocks would break. */ | |
6930 | return bpaddr; | |
6931 | } | |
76897487 KB |
6932 | else |
6933 | { | |
a0de8c21 YQ |
6934 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6935 | ||
6936 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6937 | { | |
6938 | /* Some targets have architectural constraints on the placement | |
6939 | of breakpoint instructions. Obtain the adjusted address. */ | |
6940 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6941 | } | |
76897487 | 6942 | |
a0de8c21 | 6943 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6944 | |
6945 | /* An adjusted breakpoint address can significantly alter | |
6946 | a user's expectations. Print a warning if an adjustment | |
6947 | is required. */ | |
6948 | if (adjusted_bpaddr != bpaddr) | |
6949 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6950 | ||
6951 | return adjusted_bpaddr; | |
6952 | } | |
6953 | } | |
6954 | ||
5f486660 | 6955 | bp_location::bp_location (breakpoint *owner) |
7cc221ef | 6956 | { |
5625a286 | 6957 | bp_location *loc = this; |
7cc221ef | 6958 | |
28010a5d | 6959 | loc->owner = owner; |
b775012e | 6960 | loc->cond_bytecode = NULL; |
0d381245 VP |
6961 | loc->shlib_disabled = 0; |
6962 | loc->enabled = 1; | |
e049a4b5 | 6963 | |
28010a5d | 6964 | switch (owner->type) |
e049a4b5 DJ |
6965 | { |
6966 | case bp_breakpoint: | |
7c16b83e | 6967 | case bp_single_step: |
e049a4b5 DJ |
6968 | case bp_until: |
6969 | case bp_finish: | |
6970 | case bp_longjmp: | |
6971 | case bp_longjmp_resume: | |
e2e4d78b | 6972 | case bp_longjmp_call_dummy: |
186c406b TT |
6973 | case bp_exception: |
6974 | case bp_exception_resume: | |
e049a4b5 | 6975 | case bp_step_resume: |
2c03e5be | 6976 | case bp_hp_step_resume: |
e049a4b5 DJ |
6977 | case bp_watchpoint_scope: |
6978 | case bp_call_dummy: | |
aa7d318d | 6979 | case bp_std_terminate: |
e049a4b5 DJ |
6980 | case bp_shlib_event: |
6981 | case bp_thread_event: | |
6982 | case bp_overlay_event: | |
4efc6507 | 6983 | case bp_jit_event: |
0fd8e87f | 6984 | case bp_longjmp_master: |
aa7d318d | 6985 | case bp_std_terminate_master: |
186c406b | 6986 | case bp_exception_master: |
0e30163f JK |
6987 | case bp_gnu_ifunc_resolver: |
6988 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6989 | case bp_dprintf: |
e049a4b5 | 6990 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6991 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6992 | break; |
6993 | case bp_hardware_breakpoint: | |
6994 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6995 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6996 | break; |
6997 | case bp_hardware_watchpoint: | |
6998 | case bp_read_watchpoint: | |
6999 | case bp_access_watchpoint: | |
7000 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7001 | break; | |
7002 | case bp_watchpoint: | |
ce78b96d | 7003 | case bp_catchpoint: |
15c3d785 PA |
7004 | case bp_tracepoint: |
7005 | case bp_fast_tracepoint: | |
0fb4aa4b | 7006 | case bp_static_tracepoint: |
e049a4b5 DJ |
7007 | loc->loc_type = bp_loc_other; |
7008 | break; | |
7009 | default: | |
e2e0b3e5 | 7010 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7011 | } |
7012 | ||
f431efe5 | 7013 | loc->refc = 1; |
28010a5d PA |
7014 | } |
7015 | ||
7016 | /* Allocate a struct bp_location. */ | |
7017 | ||
7018 | static struct bp_location * | |
7019 | allocate_bp_location (struct breakpoint *bpt) | |
7020 | { | |
348d480f PA |
7021 | return bpt->ops->allocate_location (bpt); |
7022 | } | |
7cc221ef | 7023 | |
f431efe5 PA |
7024 | static void |
7025 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7026 | { |
4d01a485 | 7027 | delete loc; |
fe3f5fa8 VP |
7028 | } |
7029 | ||
f431efe5 PA |
7030 | /* Increment reference count. */ |
7031 | ||
7032 | static void | |
7033 | incref_bp_location (struct bp_location *bl) | |
7034 | { | |
7035 | ++bl->refc; | |
7036 | } | |
7037 | ||
7038 | /* Decrement reference count. If the reference count reaches 0, | |
7039 | destroy the bp_location. Sets *BLP to NULL. */ | |
7040 | ||
7041 | static void | |
7042 | decref_bp_location (struct bp_location **blp) | |
7043 | { | |
0807b50c PA |
7044 | gdb_assert ((*blp)->refc > 0); |
7045 | ||
f431efe5 PA |
7046 | if (--(*blp)->refc == 0) |
7047 | free_bp_location (*blp); | |
7048 | *blp = NULL; | |
7049 | } | |
7050 | ||
346774a9 | 7051 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7052 | |
b270e6f9 TT |
7053 | static breakpoint * |
7054 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7055 | { |
346774a9 | 7056 | struct breakpoint *b1; |
b270e6f9 | 7057 | struct breakpoint *result = b.get (); |
c906108c | 7058 | |
346774a9 PA |
7059 | /* Add this breakpoint to the end of the chain so that a list of |
7060 | breakpoints will come out in order of increasing numbers. */ | |
7061 | ||
7062 | b1 = breakpoint_chain; | |
7063 | if (b1 == 0) | |
b270e6f9 | 7064 | breakpoint_chain = b.release (); |
346774a9 PA |
7065 | else |
7066 | { | |
7067 | while (b1->next) | |
7068 | b1 = b1->next; | |
b270e6f9 | 7069 | b1->next = b.release (); |
346774a9 | 7070 | } |
b270e6f9 TT |
7071 | |
7072 | return result; | |
346774a9 PA |
7073 | } |
7074 | ||
7075 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7076 | ||
7077 | static void | |
7078 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7079 | struct gdbarch *gdbarch, | |
28010a5d | 7080 | enum bptype bptype, |
c0a91b2b | 7081 | const struct breakpoint_ops *ops) |
346774a9 | 7082 | { |
348d480f PA |
7083 | gdb_assert (ops != NULL); |
7084 | ||
28010a5d | 7085 | b->ops = ops; |
4d28f7a8 | 7086 | b->type = bptype; |
a6d9a66e | 7087 | b->gdbarch = gdbarch; |
c906108c SS |
7088 | b->language = current_language->la_language; |
7089 | b->input_radix = input_radix; | |
d0fb5eae | 7090 | b->related_breakpoint = b; |
346774a9 PA |
7091 | } |
7092 | ||
7093 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7094 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7095 | |
7096 | static struct breakpoint * | |
7097 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7098 | enum bptype bptype, |
c0a91b2b | 7099 | const struct breakpoint_ops *ops) |
346774a9 | 7100 | { |
3b0871f4 | 7101 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7102 | |
3b0871f4 | 7103 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7104 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7105 | } |
7106 | ||
0e30163f JK |
7107 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7108 | resolutions should be made as the user specified the location explicitly | |
7109 | enough. */ | |
7110 | ||
0d381245 | 7111 | static void |
0e30163f | 7112 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7113 | { |
2bdf28a0 JK |
7114 | gdb_assert (loc->owner != NULL); |
7115 | ||
0d381245 | 7116 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7117 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7118 | || is_tracepoint (loc->owner)) |
0d381245 | 7119 | { |
2c02bd72 | 7120 | const char *function_name; |
0e30163f | 7121 | |
3467ec66 | 7122 | if (loc->msymbol != NULL |
f50776aa PA |
7123 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
7124 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc) | |
3467ec66 | 7125 | && !explicit_loc) |
0e30163f JK |
7126 | { |
7127 | struct breakpoint *b = loc->owner; | |
7128 | ||
3467ec66 PA |
7129 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7130 | ||
7131 | if (b->type == bp_breakpoint && b->loc == loc | |
7132 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7133 | { |
7134 | /* Create only the whole new breakpoint of this type but do not | |
7135 | mess more complicated breakpoints with multiple locations. */ | |
7136 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7137 | /* Remember the resolver's address for use by the return |
7138 | breakpoint. */ | |
3467ec66 | 7139 | loc->related_address = loc->address; |
0e30163f JK |
7140 | } |
7141 | } | |
3467ec66 PA |
7142 | else |
7143 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7144 | |
2c02bd72 DE |
7145 | if (function_name) |
7146 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7147 | } |
7148 | } | |
7149 | ||
a6d9a66e | 7150 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7151 | struct gdbarch * |
a6d9a66e UW |
7152 | get_sal_arch (struct symtab_and_line sal) |
7153 | { | |
7154 | if (sal.section) | |
7155 | return get_objfile_arch (sal.section->objfile); | |
7156 | if (sal.symtab) | |
eb822aa6 | 7157 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7158 | |
7159 | return NULL; | |
7160 | } | |
7161 | ||
346774a9 PA |
7162 | /* Low level routine for partially initializing a breakpoint of type |
7163 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7164 | file name, and line number are provided by SAL. |
0d381245 VP |
7165 | |
7166 | It is expected that the caller will complete the initialization of | |
7167 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7168 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7169 | |
346774a9 PA |
7170 | static void |
7171 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7172 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7173 | const struct breakpoint_ops *ops) |
0d381245 | 7174 | { |
28010a5d | 7175 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7176 | |
3742cc8b | 7177 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7178 | |
6c95b8df PA |
7179 | if (bptype != bp_catchpoint) |
7180 | gdb_assert (sal.pspace != NULL); | |
7181 | ||
f8eba3c6 TT |
7182 | /* Store the program space that was used to set the breakpoint, |
7183 | except for ordinary breakpoints, which are independent of the | |
7184 | program space. */ | |
7185 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7186 | b->pspace = sal.pspace; | |
346774a9 | 7187 | } |
c906108c | 7188 | |
346774a9 PA |
7189 | /* set_raw_breakpoint is a low level routine for allocating and |
7190 | partially initializing a breakpoint of type BPTYPE. The newly | |
7191 | created breakpoint's address, section, source file name, and line | |
7192 | number are provided by SAL. The newly created and partially | |
7193 | initialized breakpoint is added to the breakpoint chain and | |
7194 | is also returned as the value of this function. | |
7195 | ||
7196 | It is expected that the caller will complete the initialization of | |
7197 | the newly created breakpoint struct as well as output any status | |
7198 | information regarding the creation of a new breakpoint. In | |
7199 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7200 | number! Care should be taken to not allow an error to occur | |
7201 | prior to completing the initialization of the breakpoint. If this | |
7202 | should happen, a bogus breakpoint will be left on the chain. */ | |
7203 | ||
7204 | struct breakpoint * | |
7205 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7206 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7207 | const struct breakpoint_ops *ops) |
346774a9 | 7208 | { |
3b0871f4 | 7209 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7210 | |
3b0871f4 | 7211 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7212 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7213 | } |
7214 | ||
53a5351d | 7215 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7216 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7217 | initiated the operation. */ | |
c906108c SS |
7218 | |
7219 | void | |
186c406b | 7220 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7221 | { |
35df4500 | 7222 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7223 | int thread = tp->global_num; |
0fd8e87f UW |
7224 | |
7225 | /* To avoid having to rescan all objfile symbols at every step, | |
7226 | we maintain a list of continually-inserted but always disabled | |
7227 | longjmp "master" breakpoints. Here, we simply create momentary | |
7228 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7229 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7230 | if (b->pspace == current_program_space |
186c406b TT |
7231 | && (b->type == bp_longjmp_master |
7232 | || b->type == bp_exception_master)) | |
0fd8e87f | 7233 | { |
06edf0c0 PA |
7234 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7235 | struct breakpoint *clone; | |
cc59ec59 | 7236 | |
e2e4d78b JK |
7237 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7238 | after their removal. */ | |
06edf0c0 | 7239 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7240 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7241 | clone->thread = thread; |
7242 | } | |
186c406b TT |
7243 | |
7244 | tp->initiating_frame = frame; | |
c906108c SS |
7245 | } |
7246 | ||
611c83ae | 7247 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7248 | void |
611c83ae | 7249 | delete_longjmp_breakpoint (int thread) |
c906108c | 7250 | { |
35df4500 | 7251 | struct breakpoint *b, *b_tmp; |
c906108c | 7252 | |
35df4500 | 7253 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7254 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7255 | { |
7256 | if (b->thread == thread) | |
7257 | delete_breakpoint (b); | |
7258 | } | |
c906108c SS |
7259 | } |
7260 | ||
f59f708a PA |
7261 | void |
7262 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7263 | { | |
7264 | struct breakpoint *b, *b_tmp; | |
7265 | ||
7266 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7267 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7268 | { | |
7269 | if (b->thread == thread) | |
7270 | b->disposition = disp_del_at_next_stop; | |
7271 | } | |
7272 | } | |
7273 | ||
e2e4d78b JK |
7274 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7275 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7276 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7277 | breakpoints. */ | |
7278 | ||
7279 | struct breakpoint * | |
7280 | set_longjmp_breakpoint_for_call_dummy (void) | |
7281 | { | |
7282 | struct breakpoint *b, *retval = NULL; | |
7283 | ||
7284 | ALL_BREAKPOINTS (b) | |
7285 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7286 | { | |
7287 | struct breakpoint *new_b; | |
7288 | ||
7289 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7290 | &momentary_breakpoint_ops, |
7291 | 1); | |
00431a78 | 7292 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7293 | |
7294 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7295 | ||
7296 | gdb_assert (new_b->related_breakpoint == new_b); | |
7297 | if (retval == NULL) | |
7298 | retval = new_b; | |
7299 | new_b->related_breakpoint = retval; | |
7300 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7301 | retval = retval->related_breakpoint; | |
7302 | retval->related_breakpoint = new_b; | |
7303 | } | |
7304 | ||
7305 | return retval; | |
7306 | } | |
7307 | ||
7308 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7309 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7310 | stack. |
7311 | ||
7312 | You should call this function only at places where it is safe to currently | |
7313 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7314 | frames. */ | |
7315 | ||
7316 | void | |
b67a2c6f | 7317 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7318 | { |
7319 | struct breakpoint *b, *b_tmp; | |
7320 | ||
7321 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7322 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7323 | { |
7324 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7325 | ||
7326 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7327 | dummy_b = dummy_b->related_breakpoint; | |
7328 | if (dummy_b->type != bp_call_dummy | |
7329 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7330 | continue; | |
7331 | ||
00431a78 | 7332 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7333 | |
7334 | while (b->related_breakpoint != b) | |
7335 | { | |
7336 | if (b_tmp == b->related_breakpoint) | |
7337 | b_tmp = b->related_breakpoint->next; | |
7338 | delete_breakpoint (b->related_breakpoint); | |
7339 | } | |
7340 | delete_breakpoint (b); | |
7341 | } | |
7342 | } | |
7343 | ||
1900040c MS |
7344 | void |
7345 | enable_overlay_breakpoints (void) | |
7346 | { | |
52f0bd74 | 7347 | struct breakpoint *b; |
1900040c MS |
7348 | |
7349 | ALL_BREAKPOINTS (b) | |
7350 | if (b->type == bp_overlay_event) | |
7351 | { | |
7352 | b->enable_state = bp_enabled; | |
44702360 | 7353 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7354 | overlay_events_enabled = 1; |
1900040c MS |
7355 | } |
7356 | } | |
7357 | ||
7358 | void | |
7359 | disable_overlay_breakpoints (void) | |
7360 | { | |
52f0bd74 | 7361 | struct breakpoint *b; |
1900040c MS |
7362 | |
7363 | ALL_BREAKPOINTS (b) | |
7364 | if (b->type == bp_overlay_event) | |
7365 | { | |
7366 | b->enable_state = bp_disabled; | |
44702360 | 7367 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7368 | overlay_events_enabled = 0; |
1900040c MS |
7369 | } |
7370 | } | |
7371 | ||
aa7d318d TT |
7372 | /* Set an active std::terminate breakpoint for each std::terminate |
7373 | master breakpoint. */ | |
7374 | void | |
7375 | set_std_terminate_breakpoint (void) | |
7376 | { | |
35df4500 | 7377 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7378 | |
35df4500 | 7379 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7380 | if (b->pspace == current_program_space |
7381 | && b->type == bp_std_terminate_master) | |
7382 | { | |
06edf0c0 | 7383 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7384 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7385 | } |
7386 | } | |
7387 | ||
7388 | /* Delete all the std::terminate breakpoints. */ | |
7389 | void | |
7390 | delete_std_terminate_breakpoint (void) | |
7391 | { | |
35df4500 | 7392 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7393 | |
35df4500 | 7394 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7395 | if (b->type == bp_std_terminate) |
7396 | delete_breakpoint (b); | |
7397 | } | |
7398 | ||
c4093a6a | 7399 | struct breakpoint * |
a6d9a66e | 7400 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7401 | { |
7402 | struct breakpoint *b; | |
c4093a6a | 7403 | |
06edf0c0 PA |
7404 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7405 | &internal_breakpoint_ops); | |
7406 | ||
b5de0fa7 | 7407 | b->enable_state = bp_enabled; |
f00aae0f | 7408 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7409 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7410 | |
44702360 | 7411 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7412 | |
c4093a6a JM |
7413 | return b; |
7414 | } | |
7415 | ||
0101ce28 JJ |
7416 | struct lang_and_radix |
7417 | { | |
7418 | enum language lang; | |
7419 | int radix; | |
7420 | }; | |
7421 | ||
4efc6507 DE |
7422 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7423 | ||
7424 | struct breakpoint * | |
7425 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7426 | { | |
2a7f3dff PA |
7427 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7428 | &internal_breakpoint_ops); | |
4efc6507 | 7429 | } |
0101ce28 | 7430 | |
03673fc7 PP |
7431 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7432 | ||
7433 | void | |
7434 | remove_jit_event_breakpoints (void) | |
7435 | { | |
7436 | struct breakpoint *b, *b_tmp; | |
7437 | ||
7438 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7439 | if (b->type == bp_jit_event | |
7440 | && b->loc->pspace == current_program_space) | |
7441 | delete_breakpoint (b); | |
7442 | } | |
7443 | ||
cae688ec JJ |
7444 | void |
7445 | remove_solib_event_breakpoints (void) | |
7446 | { | |
35df4500 | 7447 | struct breakpoint *b, *b_tmp; |
cae688ec | 7448 | |
35df4500 | 7449 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7450 | if (b->type == bp_shlib_event |
7451 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7452 | delete_breakpoint (b); |
7453 | } | |
7454 | ||
f37f681c PA |
7455 | /* See breakpoint.h. */ |
7456 | ||
7457 | void | |
7458 | remove_solib_event_breakpoints_at_next_stop (void) | |
7459 | { | |
7460 | struct breakpoint *b, *b_tmp; | |
7461 | ||
7462 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7463 | if (b->type == bp_shlib_event | |
7464 | && b->loc->pspace == current_program_space) | |
7465 | b->disposition = disp_del_at_next_stop; | |
7466 | } | |
7467 | ||
04086b45 PA |
7468 | /* Helper for create_solib_event_breakpoint / |
7469 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7470 | INSERT_MODE to pass through to update_global_location_list. */ | |
7471 | ||
7472 | static struct breakpoint * | |
7473 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7474 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7475 | { |
7476 | struct breakpoint *b; | |
7477 | ||
06edf0c0 PA |
7478 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7479 | &internal_breakpoint_ops); | |
04086b45 | 7480 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7481 | return b; |
7482 | } | |
7483 | ||
04086b45 PA |
7484 | struct breakpoint * |
7485 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7486 | { | |
7487 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7488 | } | |
7489 | ||
f37f681c PA |
7490 | /* See breakpoint.h. */ |
7491 | ||
7492 | struct breakpoint * | |
7493 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7494 | { | |
7495 | struct breakpoint *b; | |
7496 | ||
04086b45 PA |
7497 | /* Explicitly tell update_global_location_list to insert |
7498 | locations. */ | |
7499 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7500 | if (!b->loc->inserted) |
7501 | { | |
7502 | delete_breakpoint (b); | |
7503 | return NULL; | |
7504 | } | |
7505 | return b; | |
7506 | } | |
7507 | ||
cae688ec JJ |
7508 | /* Disable any breakpoints that are on code in shared libraries. Only |
7509 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7510 | ||
7511 | void | |
cb851954 | 7512 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7513 | { |
876fa593 | 7514 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7515 | |
876fa593 | 7516 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7517 | { |
2bdf28a0 | 7518 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7519 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7520 | |
4a64f543 MS |
7521 | /* We apply the check to all breakpoints, including disabled for |
7522 | those with loc->duplicate set. This is so that when breakpoint | |
7523 | becomes enabled, or the duplicate is removed, gdb will try to | |
7524 | insert all breakpoints. If we don't set shlib_disabled here, | |
7525 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7526 | if (((b->type == bp_breakpoint) |
508ccb1f | 7527 | || (b->type == bp_jit_event) |
1042e4c0 | 7528 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7529 | || (is_tracepoint (b))) |
6c95b8df | 7530 | && loc->pspace == current_program_space |
0d381245 | 7531 | && !loc->shlib_disabled |
6c95b8df | 7532 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7533 | ) |
0d381245 VP |
7534 | { |
7535 | loc->shlib_disabled = 1; | |
7536 | } | |
cae688ec JJ |
7537 | } |
7538 | } | |
7539 | ||
63644780 NB |
7540 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7541 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7542 | disabled ones can just stay disabled. */ | |
84acb35a | 7543 | |
75149521 | 7544 | static void |
84acb35a JJ |
7545 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7546 | { | |
876fa593 | 7547 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7548 | int disabled_shlib_breaks = 0; |
7549 | ||
876fa593 | 7550 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7551 | { |
2bdf28a0 | 7552 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7553 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7554 | |
1e4d1764 | 7555 | if (solib->pspace == loc->pspace |
e2dd7057 | 7556 | && !loc->shlib_disabled |
1e4d1764 YQ |
7557 | && (((b->type == bp_breakpoint |
7558 | || b->type == bp_jit_event | |
7559 | || b->type == bp_hardware_breakpoint) | |
7560 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7561 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7562 | || is_tracepoint (b)) | |
e2dd7057 | 7563 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7564 | { |
e2dd7057 PP |
7565 | loc->shlib_disabled = 1; |
7566 | /* At this point, we cannot rely on remove_breakpoint | |
7567 | succeeding so we must mark the breakpoint as not inserted | |
7568 | to prevent future errors occurring in remove_breakpoints. */ | |
7569 | loc->inserted = 0; | |
8d3788bd VP |
7570 | |
7571 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7572 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7573 | |
e2dd7057 PP |
7574 | if (!disabled_shlib_breaks) |
7575 | { | |
223ffa71 | 7576 | target_terminal::ours_for_output (); |
3e43a32a MS |
7577 | warning (_("Temporarily disabling breakpoints " |
7578 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7579 | solib->so_name); |
84acb35a | 7580 | } |
e2dd7057 | 7581 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7582 | } |
7583 | } | |
84acb35a JJ |
7584 | } |
7585 | ||
63644780 NB |
7586 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7587 | notification of free_objfile. Only apply to enabled breakpoints, | |
7588 | disabled ones can just stay disabled. */ | |
7589 | ||
7590 | static void | |
7591 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7592 | { | |
7593 | struct breakpoint *b; | |
7594 | ||
7595 | if (objfile == NULL) | |
7596 | return; | |
7597 | ||
d03de421 PA |
7598 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7599 | managed by the user with add-symbol-file/remove-symbol-file. | |
7600 | Similarly to how breakpoints in shared libraries are handled in | |
7601 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7602 | shlib_disabled so they end up uninserted on the next global |
7603 | location list update. Shared libraries not loaded by the user | |
7604 | aren't handled here -- they're already handled in | |
7605 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7606 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7607 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7608 | main objfile). */ | |
7609 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7610 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7611 | return; |
7612 | ||
7613 | ALL_BREAKPOINTS (b) | |
7614 | { | |
7615 | struct bp_location *loc; | |
7616 | int bp_modified = 0; | |
7617 | ||
7618 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7619 | continue; | |
7620 | ||
7621 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7622 | { | |
7623 | CORE_ADDR loc_addr = loc->address; | |
7624 | ||
7625 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7626 | && loc->loc_type != bp_loc_software_breakpoint) | |
7627 | continue; | |
7628 | ||
7629 | if (loc->shlib_disabled != 0) | |
7630 | continue; | |
7631 | ||
7632 | if (objfile->pspace != loc->pspace) | |
7633 | continue; | |
7634 | ||
7635 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7636 | && loc->loc_type != bp_loc_software_breakpoint) | |
7637 | continue; | |
7638 | ||
7639 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7640 | { | |
7641 | loc->shlib_disabled = 1; | |
08351840 PA |
7642 | /* At this point, we don't know whether the object was |
7643 | unmapped from the inferior or not, so leave the | |
7644 | inserted flag alone. We'll handle failure to | |
7645 | uninsert quietly, in case the object was indeed | |
7646 | unmapped. */ | |
63644780 NB |
7647 | |
7648 | mark_breakpoint_location_modified (loc); | |
7649 | ||
7650 | bp_modified = 1; | |
7651 | } | |
7652 | } | |
7653 | ||
7654 | if (bp_modified) | |
76727919 | 7655 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7656 | } |
7657 | } | |
7658 | ||
ce78b96d JB |
7659 | /* FORK & VFORK catchpoints. */ |
7660 | ||
e29a4733 | 7661 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7662 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7663 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7664 | |
c1fc2657 | 7665 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7666 | { |
e29a4733 PA |
7667 | /* Process id of a child process whose forking triggered this |
7668 | catchpoint. This field is only valid immediately after this | |
7669 | catchpoint has triggered. */ | |
7670 | ptid_t forked_inferior_pid; | |
7671 | }; | |
7672 | ||
4a64f543 MS |
7673 | /* Implement the "insert" breakpoint_ops method for fork |
7674 | catchpoints. */ | |
ce78b96d | 7675 | |
77b06cd7 TJB |
7676 | static int |
7677 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7678 | { |
e99b03dc | 7679 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7680 | } |
7681 | ||
4a64f543 MS |
7682 | /* Implement the "remove" breakpoint_ops method for fork |
7683 | catchpoints. */ | |
ce78b96d JB |
7684 | |
7685 | static int | |
73971819 | 7686 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7687 | { |
e99b03dc | 7688 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7689 | } |
7690 | ||
7691 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7692 | catchpoints. */ | |
7693 | ||
7694 | static int | |
f1310107 | 7695 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7696 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7697 | const struct target_waitstatus *ws) |
ce78b96d | 7698 | { |
e29a4733 PA |
7699 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7700 | ||
f90263c1 TT |
7701 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7702 | return 0; | |
7703 | ||
7704 | c->forked_inferior_pid = ws->value.related_pid; | |
7705 | return 1; | |
ce78b96d JB |
7706 | } |
7707 | ||
4a64f543 MS |
7708 | /* Implement the "print_it" breakpoint_ops method for fork |
7709 | catchpoints. */ | |
ce78b96d JB |
7710 | |
7711 | static enum print_stop_action | |
348d480f | 7712 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7713 | { |
36dfb11c | 7714 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7715 | struct breakpoint *b = bs->breakpoint_at; |
7716 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7717 | |
ce78b96d | 7718 | annotate_catchpoint (b->number); |
f303dbd6 | 7719 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7720 | if (b->disposition == disp_del) |
112e8700 | 7721 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7722 | else |
112e8700 SM |
7723 | uiout->text ("Catchpoint "); |
7724 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7725 | { |
112e8700 SM |
7726 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7727 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7728 | } |
112e8700 SM |
7729 | uiout->field_int ("bkptno", b->number); |
7730 | uiout->text (" (forked process "); | |
e99b03dc | 7731 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7732 | uiout->text ("), "); |
ce78b96d JB |
7733 | return PRINT_SRC_AND_LOC; |
7734 | } | |
7735 | ||
4a64f543 MS |
7736 | /* Implement the "print_one" breakpoint_ops method for fork |
7737 | catchpoints. */ | |
ce78b96d JB |
7738 | |
7739 | static void | |
a6d9a66e | 7740 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7741 | { |
e29a4733 | 7742 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7743 | struct value_print_options opts; |
79a45e25 | 7744 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7745 | |
7746 | get_user_print_options (&opts); | |
7747 | ||
4a64f543 MS |
7748 | /* Field 4, the address, is omitted (which makes the columns not |
7749 | line up too nicely with the headers, but the effect is relatively | |
7750 | readable). */ | |
79a45b7d | 7751 | if (opts.addressprint) |
112e8700 | 7752 | uiout->field_skip ("addr"); |
ce78b96d | 7753 | annotate_field (5); |
112e8700 | 7754 | uiout->text ("fork"); |
d7e15655 | 7755 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7756 | { |
112e8700 | 7757 | uiout->text (", process "); |
e99b03dc | 7758 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7759 | uiout->spaces (1); |
ce78b96d | 7760 | } |
8ac3646f | 7761 | |
112e8700 SM |
7762 | if (uiout->is_mi_like_p ()) |
7763 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7764 | } |
7765 | ||
7766 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7767 | catchpoints. */ | |
7768 | ||
7769 | static void | |
7770 | print_mention_catch_fork (struct breakpoint *b) | |
7771 | { | |
7772 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7773 | } | |
7774 | ||
6149aea9 PA |
7775 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7776 | catchpoints. */ | |
7777 | ||
7778 | static void | |
7779 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7780 | { | |
7781 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7782 | print_recreate_thread (b, fp); |
6149aea9 PA |
7783 | } |
7784 | ||
ce78b96d JB |
7785 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7786 | ||
2060206e | 7787 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7788 | |
4a64f543 MS |
7789 | /* Implement the "insert" breakpoint_ops method for vfork |
7790 | catchpoints. */ | |
ce78b96d | 7791 | |
77b06cd7 TJB |
7792 | static int |
7793 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7794 | { |
e99b03dc | 7795 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7796 | } |
7797 | ||
4a64f543 MS |
7798 | /* Implement the "remove" breakpoint_ops method for vfork |
7799 | catchpoints. */ | |
ce78b96d JB |
7800 | |
7801 | static int | |
73971819 | 7802 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7803 | { |
e99b03dc | 7804 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7805 | } |
7806 | ||
7807 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7808 | catchpoints. */ | |
7809 | ||
7810 | static int | |
f1310107 | 7811 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7812 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7813 | const struct target_waitstatus *ws) |
ce78b96d | 7814 | { |
e29a4733 PA |
7815 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7816 | ||
f90263c1 TT |
7817 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7818 | return 0; | |
7819 | ||
7820 | c->forked_inferior_pid = ws->value.related_pid; | |
7821 | return 1; | |
ce78b96d JB |
7822 | } |
7823 | ||
4a64f543 MS |
7824 | /* Implement the "print_it" breakpoint_ops method for vfork |
7825 | catchpoints. */ | |
ce78b96d JB |
7826 | |
7827 | static enum print_stop_action | |
348d480f | 7828 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7829 | { |
36dfb11c | 7830 | struct ui_out *uiout = current_uiout; |
348d480f | 7831 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7832 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7833 | ||
ce78b96d | 7834 | annotate_catchpoint (b->number); |
f303dbd6 | 7835 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7836 | if (b->disposition == disp_del) |
112e8700 | 7837 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7838 | else |
112e8700 SM |
7839 | uiout->text ("Catchpoint "); |
7840 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7841 | { |
112e8700 SM |
7842 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7843 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7844 | } |
112e8700 SM |
7845 | uiout->field_int ("bkptno", b->number); |
7846 | uiout->text (" (vforked process "); | |
e99b03dc | 7847 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7848 | uiout->text ("), "); |
ce78b96d JB |
7849 | return PRINT_SRC_AND_LOC; |
7850 | } | |
7851 | ||
4a64f543 MS |
7852 | /* Implement the "print_one" breakpoint_ops method for vfork |
7853 | catchpoints. */ | |
ce78b96d JB |
7854 | |
7855 | static void | |
a6d9a66e | 7856 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7857 | { |
e29a4733 | 7858 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7859 | struct value_print_options opts; |
79a45e25 | 7860 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7861 | |
7862 | get_user_print_options (&opts); | |
4a64f543 MS |
7863 | /* Field 4, the address, is omitted (which makes the columns not |
7864 | line up too nicely with the headers, but the effect is relatively | |
7865 | readable). */ | |
79a45b7d | 7866 | if (opts.addressprint) |
112e8700 | 7867 | uiout->field_skip ("addr"); |
ce78b96d | 7868 | annotate_field (5); |
112e8700 | 7869 | uiout->text ("vfork"); |
d7e15655 | 7870 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7871 | { |
112e8700 | 7872 | uiout->text (", process "); |
e99b03dc | 7873 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7874 | uiout->spaces (1); |
ce78b96d | 7875 | } |
8ac3646f | 7876 | |
112e8700 SM |
7877 | if (uiout->is_mi_like_p ()) |
7878 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7879 | } |
7880 | ||
7881 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7882 | catchpoints. */ | |
7883 | ||
7884 | static void | |
7885 | print_mention_catch_vfork (struct breakpoint *b) | |
7886 | { | |
7887 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7888 | } | |
7889 | ||
6149aea9 PA |
7890 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7891 | catchpoints. */ | |
7892 | ||
7893 | static void | |
7894 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7895 | { | |
7896 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7897 | print_recreate_thread (b, fp); |
6149aea9 PA |
7898 | } |
7899 | ||
ce78b96d JB |
7900 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7901 | ||
2060206e | 7902 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7903 | |
edcc5120 | 7904 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7905 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7906 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7907 | ||
c1fc2657 | 7908 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7909 | { |
c1fc2657 | 7910 | ~solib_catchpoint () override; |
edcc5120 TT |
7911 | |
7912 | /* True for "catch load", false for "catch unload". */ | |
7913 | unsigned char is_load; | |
7914 | ||
7915 | /* Regular expression to match, if any. COMPILED is only valid when | |
7916 | REGEX is non-NULL. */ | |
7917 | char *regex; | |
2d7cc5c7 | 7918 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7919 | }; |
7920 | ||
c1fc2657 | 7921 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7922 | { |
c1fc2657 | 7923 | xfree (this->regex); |
edcc5120 TT |
7924 | } |
7925 | ||
7926 | static int | |
7927 | insert_catch_solib (struct bp_location *ignore) | |
7928 | { | |
7929 | return 0; | |
7930 | } | |
7931 | ||
7932 | static int | |
73971819 | 7933 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7934 | { |
7935 | return 0; | |
7936 | } | |
7937 | ||
7938 | static int | |
7939 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7940 | const address_space *aspace, |
edcc5120 TT |
7941 | CORE_ADDR bp_addr, |
7942 | const struct target_waitstatus *ws) | |
7943 | { | |
7944 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7945 | struct breakpoint *other; | |
7946 | ||
7947 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7948 | return 1; | |
7949 | ||
7950 | ALL_BREAKPOINTS (other) | |
7951 | { | |
7952 | struct bp_location *other_bl; | |
7953 | ||
7954 | if (other == bl->owner) | |
7955 | continue; | |
7956 | ||
7957 | if (other->type != bp_shlib_event) | |
7958 | continue; | |
7959 | ||
c1fc2657 | 7960 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7961 | continue; |
7962 | ||
7963 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7964 | { | |
7965 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7966 | return 1; | |
7967 | } | |
7968 | } | |
7969 | ||
7970 | return 0; | |
7971 | } | |
7972 | ||
7973 | static void | |
7974 | check_status_catch_solib (struct bpstats *bs) | |
7975 | { | |
7976 | struct solib_catchpoint *self | |
7977 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7978 | |
7979 | if (self->is_load) | |
7980 | { | |
52941706 | 7981 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7982 | { |
7983 | if (!self->regex | |
2d7cc5c7 | 7984 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7985 | return; |
7986 | } | |
7987 | } | |
7988 | else | |
7989 | { | |
6fb16ce6 | 7990 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7991 | { |
7992 | if (!self->regex | |
6fb16ce6 | 7993 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
7994 | return; |
7995 | } | |
7996 | } | |
7997 | ||
7998 | bs->stop = 0; | |
7999 | bs->print_it = print_it_noop; | |
8000 | } | |
8001 | ||
8002 | static enum print_stop_action | |
8003 | print_it_catch_solib (bpstat bs) | |
8004 | { | |
8005 | struct breakpoint *b = bs->breakpoint_at; | |
8006 | struct ui_out *uiout = current_uiout; | |
8007 | ||
8008 | annotate_catchpoint (b->number); | |
f303dbd6 | 8009 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8010 | if (b->disposition == disp_del) |
112e8700 | 8011 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8012 | else |
112e8700 SM |
8013 | uiout->text ("Catchpoint "); |
8014 | uiout->field_int ("bkptno", b->number); | |
8015 | uiout->text ("\n"); | |
8016 | if (uiout->is_mi_like_p ()) | |
8017 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8018 | print_solib_event (1); |
8019 | return PRINT_SRC_AND_LOC; | |
8020 | } | |
8021 | ||
8022 | static void | |
8023 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8024 | { | |
8025 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8026 | struct value_print_options opts; | |
8027 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8028 | |
8029 | get_user_print_options (&opts); | |
8030 | /* Field 4, the address, is omitted (which makes the columns not | |
8031 | line up too nicely with the headers, but the effect is relatively | |
8032 | readable). */ | |
8033 | if (opts.addressprint) | |
8034 | { | |
8035 | annotate_field (4); | |
112e8700 | 8036 | uiout->field_skip ("addr"); |
edcc5120 TT |
8037 | } |
8038 | ||
528e1572 | 8039 | std::string msg; |
edcc5120 TT |
8040 | annotate_field (5); |
8041 | if (self->is_load) | |
8042 | { | |
8043 | if (self->regex) | |
528e1572 | 8044 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8045 | else |
528e1572 | 8046 | msg = _("load of library"); |
edcc5120 TT |
8047 | } |
8048 | else | |
8049 | { | |
8050 | if (self->regex) | |
528e1572 | 8051 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8052 | else |
528e1572 | 8053 | msg = _("unload of library"); |
edcc5120 | 8054 | } |
112e8700 | 8055 | uiout->field_string ("what", msg); |
8ac3646f | 8056 | |
112e8700 SM |
8057 | if (uiout->is_mi_like_p ()) |
8058 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8059 | } |
8060 | ||
8061 | static void | |
8062 | print_mention_catch_solib (struct breakpoint *b) | |
8063 | { | |
8064 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8065 | ||
8066 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8067 | self->is_load ? "load" : "unload"); | |
8068 | } | |
8069 | ||
8070 | static void | |
8071 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8072 | { | |
8073 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8074 | ||
8075 | fprintf_unfiltered (fp, "%s %s", | |
8076 | b->disposition == disp_del ? "tcatch" : "catch", | |
8077 | self->is_load ? "load" : "unload"); | |
8078 | if (self->regex) | |
8079 | fprintf_unfiltered (fp, " %s", self->regex); | |
8080 | fprintf_unfiltered (fp, "\n"); | |
8081 | } | |
8082 | ||
8083 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8084 | ||
91985142 MG |
8085 | /* Shared helper function (MI and CLI) for creating and installing |
8086 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8087 | the events to be caught are load events, otherwise they are | |
8088 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8089 | temporary one. If ENABLED is non-zero the catchpoint is | |
8090 | created in an enabled state. */ | |
edcc5120 | 8091 | |
91985142 | 8092 | void |
a121b7c1 | 8093 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8094 | { |
edcc5120 | 8095 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8096 | |
edcc5120 TT |
8097 | if (!arg) |
8098 | arg = ""; | |
f1735a53 | 8099 | arg = skip_spaces (arg); |
edcc5120 | 8100 | |
36bd8eaa | 8101 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8102 | |
8103 | if (*arg != '\0') | |
8104 | { | |
2d7cc5c7 PA |
8105 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8106 | _("Invalid regexp"))); | |
edcc5120 TT |
8107 | c->regex = xstrdup (arg); |
8108 | } | |
8109 | ||
8110 | c->is_load = is_load; | |
36bd8eaa | 8111 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8112 | &catch_solib_breakpoint_ops); |
8113 | ||
c1fc2657 | 8114 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8115 | |
b270e6f9 | 8116 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8117 | } |
8118 | ||
91985142 MG |
8119 | /* A helper function that does all the work for "catch load" and |
8120 | "catch unload". */ | |
8121 | ||
8122 | static void | |
eb4c3f4a | 8123 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8124 | struct cmd_list_element *command) |
8125 | { | |
8126 | int tempflag; | |
8127 | const int enabled = 1; | |
8128 | ||
8129 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8130 | ||
8131 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8132 | } | |
8133 | ||
edcc5120 | 8134 | static void |
eb4c3f4a | 8135 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8136 | struct cmd_list_element *command) |
8137 | { | |
8138 | catch_load_or_unload (arg, from_tty, 1, command); | |
8139 | } | |
8140 | ||
8141 | static void | |
eb4c3f4a | 8142 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8143 | struct cmd_list_element *command) |
8144 | { | |
8145 | catch_load_or_unload (arg, from_tty, 0, command); | |
8146 | } | |
8147 | ||
346774a9 PA |
8148 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8149 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8150 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8151 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8152 | |
ab04a2af | 8153 | void |
346774a9 PA |
8154 | init_catchpoint (struct breakpoint *b, |
8155 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8156 | const char *cond_string, |
c0a91b2b | 8157 | const struct breakpoint_ops *ops) |
c906108c | 8158 | { |
51abb421 | 8159 | symtab_and_line sal; |
6c95b8df | 8160 | sal.pspace = current_program_space; |
c5aa993b | 8161 | |
28010a5d | 8162 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8163 | |
1b36a34b | 8164 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8165 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8166 | } |
8167 | ||
28010a5d | 8168 | void |
b270e6f9 | 8169 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8170 | { |
b270e6f9 | 8171 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8172 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8173 | if (is_tracepoint (b)) |
8174 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8175 | if (!internal) |
8176 | mention (b); | |
76727919 | 8177 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8178 | |
8179 | if (update_gll) | |
44702360 | 8180 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8181 | } |
8182 | ||
9b70b993 | 8183 | static void |
a6d9a66e | 8184 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8185 | int tempflag, const char *cond_string, |
c0a91b2b | 8186 | const struct breakpoint_ops *ops) |
c906108c | 8187 | { |
b270e6f9 | 8188 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8189 | |
b270e6f9 | 8190 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8191 | |
8192 | c->forked_inferior_pid = null_ptid; | |
8193 | ||
b270e6f9 | 8194 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8195 | } |
8196 | ||
fe798b75 JB |
8197 | /* Exec catchpoints. */ |
8198 | ||
b4d90040 | 8199 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8200 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8201 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8202 | ||
c1fc2657 | 8203 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8204 | { |
c1fc2657 | 8205 | ~exec_catchpoint () override; |
b4d90040 PA |
8206 | |
8207 | /* Filename of a program whose exec triggered this catchpoint. | |
8208 | This field is only valid immediately after this catchpoint has | |
8209 | triggered. */ | |
8210 | char *exec_pathname; | |
8211 | }; | |
8212 | ||
c1fc2657 | 8213 | /* Exec catchpoint destructor. */ |
b4d90040 | 8214 | |
c1fc2657 | 8215 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8216 | { |
c1fc2657 | 8217 | xfree (this->exec_pathname); |
b4d90040 PA |
8218 | } |
8219 | ||
77b06cd7 TJB |
8220 | static int |
8221 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8222 | { |
e99b03dc | 8223 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8224 | } |
c906108c | 8225 | |
fe798b75 | 8226 | static int |
73971819 | 8227 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8228 | { |
e99b03dc | 8229 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8230 | } |
c906108c | 8231 | |
fe798b75 | 8232 | static int |
f1310107 | 8233 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8234 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8235 | const struct target_waitstatus *ws) |
fe798b75 | 8236 | { |
b4d90040 PA |
8237 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8238 | ||
f90263c1 TT |
8239 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8240 | return 0; | |
8241 | ||
8242 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8243 | return 1; | |
fe798b75 | 8244 | } |
c906108c | 8245 | |
fe798b75 | 8246 | static enum print_stop_action |
348d480f | 8247 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8248 | { |
36dfb11c | 8249 | struct ui_out *uiout = current_uiout; |
348d480f | 8250 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8251 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8252 | ||
fe798b75 | 8253 | annotate_catchpoint (b->number); |
f303dbd6 | 8254 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8255 | if (b->disposition == disp_del) |
112e8700 | 8256 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8257 | else |
112e8700 SM |
8258 | uiout->text ("Catchpoint "); |
8259 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8260 | { |
112e8700 SM |
8261 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8262 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8263 | } |
112e8700 SM |
8264 | uiout->field_int ("bkptno", b->number); |
8265 | uiout->text (" (exec'd "); | |
8266 | uiout->field_string ("new-exec", c->exec_pathname); | |
8267 | uiout->text ("), "); | |
36dfb11c | 8268 | |
fe798b75 | 8269 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8270 | } |
8271 | ||
fe798b75 | 8272 | static void |
a6d9a66e | 8273 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8274 | { |
b4d90040 | 8275 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8276 | struct value_print_options opts; |
79a45e25 | 8277 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8278 | |
8279 | get_user_print_options (&opts); | |
8280 | ||
8281 | /* Field 4, the address, is omitted (which makes the columns | |
8282 | not line up too nicely with the headers, but the effect | |
8283 | is relatively readable). */ | |
8284 | if (opts.addressprint) | |
112e8700 | 8285 | uiout->field_skip ("addr"); |
fe798b75 | 8286 | annotate_field (5); |
112e8700 | 8287 | uiout->text ("exec"); |
b4d90040 | 8288 | if (c->exec_pathname != NULL) |
fe798b75 | 8289 | { |
112e8700 SM |
8290 | uiout->text (", program \""); |
8291 | uiout->field_string ("what", c->exec_pathname); | |
8292 | uiout->text ("\" "); | |
fe798b75 | 8293 | } |
8ac3646f | 8294 | |
112e8700 SM |
8295 | if (uiout->is_mi_like_p ()) |
8296 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8297 | } |
8298 | ||
8299 | static void | |
8300 | print_mention_catch_exec (struct breakpoint *b) | |
8301 | { | |
8302 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8303 | } | |
8304 | ||
6149aea9 PA |
8305 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8306 | catchpoints. */ | |
8307 | ||
8308 | static void | |
8309 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8310 | { | |
8311 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8312 | print_recreate_thread (b, fp); |
6149aea9 PA |
8313 | } |
8314 | ||
2060206e | 8315 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8316 | |
c906108c | 8317 | static int |
fba45db2 | 8318 | hw_breakpoint_used_count (void) |
c906108c | 8319 | { |
c906108c | 8320 | int i = 0; |
f1310107 TJB |
8321 | struct breakpoint *b; |
8322 | struct bp_location *bl; | |
c906108c SS |
8323 | |
8324 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8325 | { |
d6b74ac4 | 8326 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8327 | for (bl = b->loc; bl; bl = bl->next) |
8328 | { | |
8329 | /* Special types of hardware breakpoints may use more than | |
8330 | one register. */ | |
348d480f | 8331 | i += b->ops->resources_needed (bl); |
f1310107 | 8332 | } |
c5aa993b | 8333 | } |
c906108c SS |
8334 | |
8335 | return i; | |
8336 | } | |
8337 | ||
a1398e0c PA |
8338 | /* Returns the resources B would use if it were a hardware |
8339 | watchpoint. */ | |
8340 | ||
c906108c | 8341 | static int |
a1398e0c | 8342 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8343 | { |
c906108c | 8344 | int i = 0; |
e09342b5 | 8345 | struct bp_location *bl; |
c906108c | 8346 | |
a1398e0c PA |
8347 | if (!breakpoint_enabled (b)) |
8348 | return 0; | |
8349 | ||
8350 | for (bl = b->loc; bl; bl = bl->next) | |
8351 | { | |
8352 | /* Special types of hardware watchpoints may use more than | |
8353 | one register. */ | |
8354 | i += b->ops->resources_needed (bl); | |
8355 | } | |
8356 | ||
8357 | return i; | |
8358 | } | |
8359 | ||
8360 | /* Returns the sum the used resources of all hardware watchpoints of | |
8361 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8362 | the sum of the used resources of all hardware watchpoints of other | |
8363 | types _not_ TYPE. */ | |
8364 | ||
8365 | static int | |
8366 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8367 | enum bptype type, int *other_type_used) | |
8368 | { | |
8369 | int i = 0; | |
8370 | struct breakpoint *b; | |
8371 | ||
c906108c SS |
8372 | *other_type_used = 0; |
8373 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8374 | { |
a1398e0c PA |
8375 | if (b == except) |
8376 | continue; | |
e09342b5 TJB |
8377 | if (!breakpoint_enabled (b)) |
8378 | continue; | |
8379 | ||
a1398e0c PA |
8380 | if (b->type == type) |
8381 | i += hw_watchpoint_use_count (b); | |
8382 | else if (is_hardware_watchpoint (b)) | |
8383 | *other_type_used = 1; | |
e09342b5 TJB |
8384 | } |
8385 | ||
c906108c SS |
8386 | return i; |
8387 | } | |
8388 | ||
c906108c | 8389 | void |
fba45db2 | 8390 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8391 | { |
c5aa993b | 8392 | struct breakpoint *b; |
c906108c SS |
8393 | |
8394 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8395 | { |
cc60f2e3 | 8396 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8397 | { |
b5de0fa7 | 8398 | b->enable_state = bp_call_disabled; |
44702360 | 8399 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8400 | } |
8401 | } | |
c906108c SS |
8402 | } |
8403 | ||
8404 | void | |
fba45db2 | 8405 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8406 | { |
c5aa993b | 8407 | struct breakpoint *b; |
c906108c SS |
8408 | |
8409 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8410 | { |
cc60f2e3 | 8411 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8412 | { |
b5de0fa7 | 8413 | b->enable_state = bp_enabled; |
44702360 | 8414 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8415 | } |
8416 | } | |
c906108c SS |
8417 | } |
8418 | ||
8bea4e01 UW |
8419 | void |
8420 | disable_breakpoints_before_startup (void) | |
8421 | { | |
6c95b8df | 8422 | current_program_space->executing_startup = 1; |
44702360 | 8423 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8424 | } |
8425 | ||
8426 | void | |
8427 | enable_breakpoints_after_startup (void) | |
8428 | { | |
6c95b8df | 8429 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8430 | breakpoint_re_set (); |
8bea4e01 UW |
8431 | } |
8432 | ||
7c16b83e PA |
8433 | /* Create a new single-step breakpoint for thread THREAD, with no |
8434 | locations. */ | |
c906108c | 8435 | |
7c16b83e PA |
8436 | static struct breakpoint * |
8437 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8438 | { | |
b270e6f9 | 8439 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8440 | |
b270e6f9 | 8441 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8442 | &momentary_breakpoint_ops); |
8443 | ||
8444 | b->disposition = disp_donttouch; | |
8445 | b->frame_id = null_frame_id; | |
8446 | ||
8447 | b->thread = thread; | |
8448 | gdb_assert (b->thread != 0); | |
8449 | ||
b270e6f9 | 8450 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8451 | } |
8452 | ||
8453 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8454 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8455 | frame. */ | |
c906108c | 8456 | |
454dafbd | 8457 | breakpoint_up |
a6d9a66e UW |
8458 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8459 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8460 | { |
52f0bd74 | 8461 | struct breakpoint *b; |
edb3359d | 8462 | |
193facb3 JK |
8463 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8464 | tail-called one. */ | |
8465 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8466 | |
06edf0c0 | 8467 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8468 | b->enable_state = bp_enabled; |
8469 | b->disposition = disp_donttouch; | |
818dd999 | 8470 | b->frame_id = frame_id; |
c906108c | 8471 | |
00431a78 | 8472 | b->thread = inferior_thread ()->global_num; |
c906108c | 8473 | |
44702360 | 8474 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8475 | |
454dafbd | 8476 | return breakpoint_up (b); |
c906108c | 8477 | } |
611c83ae | 8478 | |
06edf0c0 | 8479 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8480 | The new breakpoint will have type TYPE, use OPS as its |
8481 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8482 | |
06edf0c0 PA |
8483 | static struct breakpoint * |
8484 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8485 | enum bptype type, | |
a1aa2221 LM |
8486 | const struct breakpoint_ops *ops, |
8487 | int loc_enabled) | |
e58b0e63 PA |
8488 | { |
8489 | struct breakpoint *copy; | |
8490 | ||
06edf0c0 | 8491 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8492 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8493 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8494 | |
a6d9a66e | 8495 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8496 | copy->loc->requested_address = orig->loc->requested_address; |
8497 | copy->loc->address = orig->loc->address; | |
8498 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8499 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8500 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8501 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8502 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8503 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8504 | copy->frame_id = orig->frame_id; |
8505 | copy->thread = orig->thread; | |
6c95b8df | 8506 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8507 | |
8508 | copy->enable_state = bp_enabled; | |
8509 | copy->disposition = disp_donttouch; | |
8510 | copy->number = internal_breakpoint_number--; | |
8511 | ||
44702360 | 8512 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8513 | return copy; |
8514 | } | |
8515 | ||
06edf0c0 PA |
8516 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8517 | ORIG is NULL. */ | |
8518 | ||
8519 | struct breakpoint * | |
8520 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8521 | { | |
8522 | /* If there's nothing to clone, then return nothing. */ | |
8523 | if (orig == NULL) | |
8524 | return NULL; | |
8525 | ||
a1aa2221 | 8526 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8527 | } |
8528 | ||
454dafbd | 8529 | breakpoint_up |
a6d9a66e UW |
8530 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8531 | enum bptype type) | |
611c83ae PA |
8532 | { |
8533 | struct symtab_and_line sal; | |
8534 | ||
8535 | sal = find_pc_line (pc, 0); | |
8536 | sal.pc = pc; | |
8537 | sal.section = find_pc_overlay (pc); | |
8538 | sal.explicit_pc = 1; | |
8539 | ||
a6d9a66e | 8540 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8541 | } |
c906108c | 8542 | \f |
c5aa993b | 8543 | |
c906108c SS |
8544 | /* Tell the user we have just set a breakpoint B. */ |
8545 | ||
8546 | static void | |
fba45db2 | 8547 | mention (struct breakpoint *b) |
c906108c | 8548 | { |
348d480f | 8549 | b->ops->print_mention (b); |
2d33446d | 8550 | current_uiout->text ("\n"); |
c906108c | 8551 | } |
c906108c | 8552 | \f |
c5aa993b | 8553 | |
1a853c52 PA |
8554 | static int bp_loc_is_permanent (struct bp_location *loc); |
8555 | ||
0d381245 | 8556 | static struct bp_location * |
39d61571 | 8557 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8558 | const struct symtab_and_line *sal) |
8559 | { | |
8560 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8561 | CORE_ADDR adjusted_address; |
8562 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8563 | ||
8564 | if (loc_gdbarch == NULL) | |
8565 | loc_gdbarch = b->gdbarch; | |
8566 | ||
8567 | /* Adjust the breakpoint's address prior to allocating a location. | |
8568 | Once we call allocate_bp_location(), that mostly uninitialized | |
8569 | location will be placed on the location chain. Adjustment of the | |
8570 | breakpoint may cause target_read_memory() to be called and we do | |
8571 | not want its scan of the location chain to find a breakpoint and | |
8572 | location that's only been partially initialized. */ | |
8573 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8574 | sal->pc, b->type); | |
0d381245 | 8575 | |
d30113d4 | 8576 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8577 | loc = allocate_bp_location (b); |
d30113d4 JK |
8578 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8579 | tmp = &((*tmp)->next)) | |
0d381245 | 8580 | ; |
d30113d4 | 8581 | loc->next = *tmp; |
0d381245 | 8582 | *tmp = loc; |
3742cc8b | 8583 | |
0d381245 | 8584 | loc->requested_address = sal->pc; |
3742cc8b | 8585 | loc->address = adjusted_address; |
6c95b8df | 8586 | loc->pspace = sal->pspace; |
935676c9 | 8587 | loc->probe.prob = sal->prob; |
729662a5 | 8588 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8589 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8590 | loc->section = sal->section; |
3742cc8b | 8591 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8592 | loc->line_number = sal->line; |
2f202fde | 8593 | loc->symtab = sal->symtab; |
4a27f119 | 8594 | loc->symbol = sal->symbol; |
3467ec66 PA |
8595 | loc->msymbol = sal->msymbol; |
8596 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8597 | |
0e30163f JK |
8598 | set_breakpoint_location_function (loc, |
8599 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8600 | |
6ae88661 LM |
8601 | /* While by definition, permanent breakpoints are already present in the |
8602 | code, we don't mark the location as inserted. Normally one would expect | |
8603 | that GDB could rely on that breakpoint instruction to stop the program, | |
8604 | thus removing the need to insert its own breakpoint, except that executing | |
8605 | the breakpoint instruction can kill the target instead of reporting a | |
8606 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8607 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8608 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8609 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8610 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8611 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8612 | it manually increments the PC, thus avoiding executing the breakpoint | |
8613 | instruction.) */ | |
1a853c52 | 8614 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8615 | loc->permanent = 1; |
1a853c52 | 8616 | |
0d381245 VP |
8617 | return loc; |
8618 | } | |
514f746b AR |
8619 | \f |
8620 | ||
1cf4d951 | 8621 | /* See breakpoint.h. */ |
514f746b | 8622 | |
1cf4d951 PA |
8623 | int |
8624 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8625 | { |
8626 | int len; | |
8627 | CORE_ADDR addr; | |
1afeeb75 | 8628 | const gdb_byte *bpoint; |
514f746b AR |
8629 | gdb_byte *target_mem; |
8630 | ||
1cf4d951 PA |
8631 | addr = address; |
8632 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8633 | ||
8634 | /* Software breakpoints unsupported? */ | |
8635 | if (bpoint == NULL) | |
8636 | return 0; | |
8637 | ||
224c3ddb | 8638 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8639 | |
8640 | /* Enable the automatic memory restoration from breakpoints while | |
8641 | we read the memory. Otherwise we could say about our temporary | |
8642 | breakpoints they are permanent. */ | |
cb85b21b TT |
8643 | scoped_restore restore_memory |
8644 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8645 | |
8646 | if (target_read_memory (address, target_mem, len) == 0 | |
8647 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8648 | return 1; |
1cf4d951 | 8649 | |
cb85b21b | 8650 | return 0; |
1cf4d951 PA |
8651 | } |
8652 | ||
8653 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8654 | return 0 otherwise. */ | |
8655 | ||
8656 | static int | |
8657 | bp_loc_is_permanent (struct bp_location *loc) | |
8658 | { | |
514f746b AR |
8659 | gdb_assert (loc != NULL); |
8660 | ||
244558af LM |
8661 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8662 | attempt to read from the addresses the locations of these breakpoint types | |
8663 | point to. program_breakpoint_here_p, below, will attempt to read | |
8664 | memory. */ | |
8665 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8666 | return 0; | |
8667 | ||
5ed8105e | 8668 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8669 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8670 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8671 | } |
8672 | ||
e7e0cddf SS |
8673 | /* Build a command list for the dprintf corresponding to the current |
8674 | settings of the dprintf style options. */ | |
8675 | ||
8676 | static void | |
8677 | update_dprintf_command_list (struct breakpoint *b) | |
8678 | { | |
8679 | char *dprintf_args = b->extra_string; | |
8680 | char *printf_line = NULL; | |
8681 | ||
8682 | if (!dprintf_args) | |
8683 | return; | |
8684 | ||
8685 | dprintf_args = skip_spaces (dprintf_args); | |
8686 | ||
8687 | /* Allow a comma, as it may have terminated a location, but don't | |
8688 | insist on it. */ | |
8689 | if (*dprintf_args == ',') | |
8690 | ++dprintf_args; | |
8691 | dprintf_args = skip_spaces (dprintf_args); | |
8692 | ||
8693 | if (*dprintf_args != '"') | |
8694 | error (_("Bad format string, missing '\"'.")); | |
8695 | ||
d3ce09f5 | 8696 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8697 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8698 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8699 | { |
8700 | if (!dprintf_function) | |
8701 | error (_("No function supplied for dprintf call")); | |
8702 | ||
8703 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8704 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8705 | dprintf_function, | |
8706 | dprintf_channel, | |
8707 | dprintf_args); | |
8708 | else | |
8709 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8710 | dprintf_function, | |
8711 | dprintf_args); | |
8712 | } | |
d3ce09f5 SS |
8713 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8714 | { | |
8715 | if (target_can_run_breakpoint_commands ()) | |
8716 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8717 | else | |
8718 | { | |
8719 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8720 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8721 | } | |
8722 | } | |
e7e0cddf SS |
8723 | else |
8724 | internal_error (__FILE__, __LINE__, | |
8725 | _("Invalid dprintf style.")); | |
8726 | ||
f28045c2 | 8727 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8728 | |
12973681 TT |
8729 | /* Manufacture a printf sequence. */ |
8730 | struct command_line *printf_cmd_line | |
8731 | = new struct command_line (simple_control, printf_line); | |
8732 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8733 | command_lines_deleter ())); | |
e7e0cddf SS |
8734 | } |
8735 | ||
8736 | /* Update all dprintf commands, making their command lists reflect | |
8737 | current style settings. */ | |
8738 | ||
8739 | static void | |
eb4c3f4a | 8740 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8741 | struct cmd_list_element *c) |
8742 | { | |
8743 | struct breakpoint *b; | |
8744 | ||
8745 | ALL_BREAKPOINTS (b) | |
8746 | { | |
8747 | if (b->type == bp_dprintf) | |
8748 | update_dprintf_command_list (b); | |
8749 | } | |
8750 | } | |
c3f6f71d | 8751 | |
f00aae0f KS |
8752 | /* Create a breakpoint with SAL as location. Use LOCATION |
8753 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8754 | as condition expression. If LOCATION is NULL then create an |
8755 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8756 | |
8757 | static void | |
d9b3f62e | 8758 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8759 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8760 | event_location_up &&location, |
e1e01040 PA |
8761 | gdb::unique_xmalloc_ptr<char> filter, |
8762 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8763 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8764 | enum bptype type, enum bpdisp disposition, |
8765 | int thread, int task, int ignore_count, | |
c0a91b2b | 8766 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8767 | int enabled, int internal, unsigned flags, |
8768 | int display_canonical) | |
018d34a4 | 8769 | { |
0d381245 | 8770 | int i; |
018d34a4 VP |
8771 | |
8772 | if (type == bp_hardware_breakpoint) | |
8773 | { | |
fbbd034e AS |
8774 | int target_resources_ok; |
8775 | ||
8776 | i = hw_breakpoint_used_count (); | |
8777 | target_resources_ok = | |
8778 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8779 | i + 1, 0); |
8780 | if (target_resources_ok == 0) | |
8781 | error (_("No hardware breakpoint support in the target.")); | |
8782 | else if (target_resources_ok < 0) | |
8783 | error (_("Hardware breakpoints used exceeds limit.")); | |
8784 | } | |
8785 | ||
6c5b2ebe | 8786 | gdb_assert (!sals.empty ()); |
6c95b8df | 8787 | |
6c5b2ebe | 8788 | for (const auto &sal : sals) |
0d381245 | 8789 | { |
0d381245 VP |
8790 | struct bp_location *loc; |
8791 | ||
8792 | if (from_tty) | |
5af949e3 UW |
8793 | { |
8794 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8795 | if (!loc_gdbarch) | |
8796 | loc_gdbarch = gdbarch; | |
8797 | ||
8798 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8799 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8800 | } |
0d381245 | 8801 | |
6c5b2ebe | 8802 | if (&sal == &sals[0]) |
0d381245 | 8803 | { |
d9b3f62e | 8804 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8805 | b->thread = thread; |
4a306c9a | 8806 | b->task = task; |
855a6e68 | 8807 | |
e1e01040 PA |
8808 | b->cond_string = cond_string.release (); |
8809 | b->extra_string = extra_string.release (); | |
0d381245 | 8810 | b->ignore_count = ignore_count; |
41447f92 | 8811 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8812 | b->disposition = disposition; |
6c95b8df | 8813 | |
44f238bb PA |
8814 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8815 | b->loc->inserted = 1; | |
8816 | ||
0fb4aa4b PA |
8817 | if (type == bp_static_tracepoint) |
8818 | { | |
d9b3f62e | 8819 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8820 | struct static_tracepoint_marker marker; |
8821 | ||
983af33b | 8822 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8823 | { |
8824 | /* We already know the marker exists, otherwise, we | |
8825 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8826 | const char *p |
8827 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8828 | const char *endp; |
0fb4aa4b | 8829 | |
f1735a53 | 8830 | p = skip_spaces (p); |
0fb4aa4b | 8831 | |
f1735a53 | 8832 | endp = skip_to_space (p); |
0fb4aa4b | 8833 | |
5d9310c4 | 8834 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8835 | |
3e43a32a MS |
8836 | printf_filtered (_("Probed static tracepoint " |
8837 | "marker \"%s\"\n"), | |
5d9310c4 | 8838 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8839 | } |
8840 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8841 | { | |
5d9310c4 | 8842 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8843 | |
3e43a32a MS |
8844 | printf_filtered (_("Probed static tracepoint " |
8845 | "marker \"%s\"\n"), | |
5d9310c4 | 8846 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8847 | } |
8848 | else | |
3e43a32a MS |
8849 | warning (_("Couldn't determine the static " |
8850 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8851 | } |
8852 | ||
0d381245 VP |
8853 | loc = b->loc; |
8854 | } | |
8855 | else | |
018d34a4 | 8856 | { |
39d61571 | 8857 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8858 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8859 | loc->inserted = 1; | |
0d381245 VP |
8860 | } |
8861 | ||
8862 | if (b->cond_string) | |
8863 | { | |
bbc13ae3 KS |
8864 | const char *arg = b->cond_string; |
8865 | ||
1bb9788d TT |
8866 | loc->cond = parse_exp_1 (&arg, loc->address, |
8867 | block_for_pc (loc->address), 0); | |
0d381245 | 8868 | if (*arg) |
588ae58c | 8869 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8870 | } |
e7e0cddf SS |
8871 | |
8872 | /* Dynamic printf requires and uses additional arguments on the | |
8873 | command line, otherwise it's an error. */ | |
8874 | if (type == bp_dprintf) | |
8875 | { | |
8876 | if (b->extra_string) | |
8877 | update_dprintf_command_list (b); | |
8878 | else | |
8879 | error (_("Format string required")); | |
8880 | } | |
8881 | else if (b->extra_string) | |
588ae58c | 8882 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8883 | } |
018d34a4 | 8884 | |
56435ebe | 8885 | b->display_canonical = display_canonical; |
f00aae0f | 8886 | if (location != NULL) |
d28cd78a | 8887 | b->location = std::move (location); |
018d34a4 | 8888 | else |
d28cd78a | 8889 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8890 | b->filter = filter.release (); |
d9b3f62e | 8891 | } |
018d34a4 | 8892 | |
d9b3f62e PA |
8893 | static void |
8894 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8895 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8896 | event_location_up &&location, |
e1e01040 PA |
8897 | gdb::unique_xmalloc_ptr<char> filter, |
8898 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8899 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8900 | enum bptype type, enum bpdisp disposition, |
8901 | int thread, int task, int ignore_count, | |
c0a91b2b | 8902 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8903 | int enabled, int internal, unsigned flags, |
8904 | int display_canonical) | |
d9b3f62e | 8905 | { |
a5e364af | 8906 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8907 | |
a5e364af | 8908 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8909 | sals, std::move (location), |
e1e01040 PA |
8910 | std::move (filter), |
8911 | std::move (cond_string), | |
8912 | std::move (extra_string), | |
d9b3f62e PA |
8913 | type, disposition, |
8914 | thread, task, ignore_count, | |
8915 | ops, from_tty, | |
44f238bb PA |
8916 | enabled, internal, flags, |
8917 | display_canonical); | |
d9b3f62e | 8918 | |
b270e6f9 | 8919 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8920 | } |
8921 | ||
8922 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8923 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8924 | value. COND_STRING, if not NULL, specified the condition to be | |
8925 | used for all breakpoints. Essentially the only case where | |
8926 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8927 | function. In that case, it's still not possible to specify | |
8928 | separate conditions for different overloaded functions, so | |
8929 | we take just a single condition string. | |
8930 | ||
c3f6f71d | 8931 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8932 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8933 | array contents). If the function fails (error() is called), the |
8934 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8935 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8936 | |
8937 | static void | |
8cdf0e15 | 8938 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8939 | struct linespec_result *canonical, |
e1e01040 PA |
8940 | gdb::unique_xmalloc_ptr<char> cond_string, |
8941 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8942 | enum bptype type, enum bpdisp disposition, |
8943 | int thread, int task, int ignore_count, | |
c0a91b2b | 8944 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8945 | int enabled, int internal, unsigned flags) |
c906108c | 8946 | { |
f8eba3c6 | 8947 | if (canonical->pre_expanded) |
6c5b2ebe | 8948 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8949 | |
6c5b2ebe | 8950 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8951 | { |
f00aae0f | 8952 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8953 | 'break', without arguments. */ |
ffc2605c | 8954 | event_location_up location |
f00aae0f | 8955 | = (canonical->location != NULL |
8e9e35b1 | 8956 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8957 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8958 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8959 | |
6c5b2ebe | 8960 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8961 | std::move (location), |
e1e01040 PA |
8962 | std::move (filter_string), |
8963 | std::move (cond_string), | |
8964 | std::move (extra_string), | |
e7e0cddf | 8965 | type, disposition, |
84f4c1fe | 8966 | thread, task, ignore_count, ops, |
44f238bb | 8967 | from_tty, enabled, internal, flags, |
56435ebe | 8968 | canonical->special_display); |
c3f6f71d | 8969 | } |
c3f6f71d | 8970 | } |
c906108c | 8971 | |
f00aae0f | 8972 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8973 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8974 | addresses found. LOCATION points to the end of the SAL (for |
8975 | linespec locations). | |
9998af43 TJB |
8976 | |
8977 | The array and the line spec strings are allocated on the heap, it is | |
8978 | the caller's responsibility to free them. */ | |
c906108c | 8979 | |
b9362cc7 | 8980 | static void |
f00aae0f | 8981 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8982 | struct linespec_result *canonical) |
c3f6f71d | 8983 | { |
f00aae0f KS |
8984 | struct symtab_and_line cursal; |
8985 | ||
8986 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8987 | { | |
a20714ff | 8988 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8989 | |
a20714ff | 8990 | if (spec == NULL) |
f00aae0f KS |
8991 | { |
8992 | /* The last displayed codepoint, if it's valid, is our default | |
8993 | breakpoint address. */ | |
8994 | if (last_displayed_sal_is_valid ()) | |
8995 | { | |
f00aae0f KS |
8996 | /* Set sal's pspace, pc, symtab, and line to the values |
8997 | corresponding to the last call to print_frame_info. | |
8998 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8999 | as the breakpoint line number is inappropriate otherwise. | |
9000 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9001 | symtab_and_line sal = get_last_displayed_sal (); |
9002 | CORE_ADDR pc = sal.pc; | |
9003 | ||
f00aae0f KS |
9004 | sal = find_pc_line (pc, 0); |
9005 | ||
9006 | /* "break" without arguments is equivalent to "break *PC" | |
9007 | where PC is the last displayed codepoint's address. So | |
9008 | make sure to set sal.explicit_pc to prevent GDB from | |
9009 | trying to expand the list of sals to include all other | |
9010 | instances with the same symtab and line. */ | |
9011 | sal.pc = pc; | |
9012 | sal.explicit_pc = 1; | |
9013 | ||
6c5b2ebe PA |
9014 | struct linespec_sals lsal; |
9015 | lsal.sals = {sal}; | |
f00aae0f KS |
9016 | lsal.canonical = NULL; |
9017 | ||
6c5b2ebe | 9018 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9019 | return; |
9020 | } | |
9021 | else | |
9022 | error (_("No default breakpoint address now.")); | |
c906108c | 9023 | } |
c906108c | 9024 | } |
f00aae0f KS |
9025 | |
9026 | /* Force almost all breakpoints to be in terms of the | |
9027 | current_source_symtab (which is decode_line_1's default). | |
9028 | This should produce the results we want almost all of the | |
9029 | time while leaving default_breakpoint_* alone. | |
9030 | ||
9031 | ObjC: However, don't match an Objective-C method name which | |
9032 | may have a '+' or '-' succeeded by a '['. */ | |
9033 | cursal = get_current_source_symtab_and_line (); | |
9034 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9035 | { |
a20714ff | 9036 | const char *spec = NULL; |
cc80f267 | 9037 | |
f00aae0f | 9038 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9039 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9040 | |
f00aae0f | 9041 | if (!cursal.symtab |
a20714ff PA |
9042 | || (spec != NULL |
9043 | && strchr ("+-", spec[0]) != NULL | |
9044 | && spec[1] != '[')) | |
f00aae0f | 9045 | { |
c2f4122d | 9046 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9047 | get_last_displayed_symtab (), |
9048 | get_last_displayed_line (), | |
9049 | canonical, NULL, NULL); | |
9050 | return; | |
9051 | } | |
c906108c | 9052 | } |
f00aae0f | 9053 | |
c2f4122d | 9054 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9055 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9056 | } |
c906108c | 9057 | |
c906108c | 9058 | |
c3f6f71d | 9059 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9060 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9061 | |
b9362cc7 | 9062 | static void |
6c5b2ebe | 9063 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9064 | { |
6c5b2ebe PA |
9065 | for (auto &sal : sals) |
9066 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9067 | } |
9068 | ||
7a697b8d SS |
9069 | /* Fast tracepoints may have restrictions on valid locations. For |
9070 | instance, a fast tracepoint using a jump instead of a trap will | |
9071 | likely have to overwrite more bytes than a trap would, and so can | |
9072 | only be placed where the instruction is longer than the jump, or a | |
9073 | multi-instruction sequence does not have a jump into the middle of | |
9074 | it, etc. */ | |
9075 | ||
9076 | static void | |
9077 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9078 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9079 | { |
6c5b2ebe | 9080 | for (const auto &sal : sals) |
7a697b8d | 9081 | { |
f8eba3c6 TT |
9082 | struct gdbarch *sarch; |
9083 | ||
6c5b2ebe | 9084 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9085 | /* We fall back to GDBARCH if there is no architecture |
9086 | associated with SAL. */ | |
9087 | if (sarch == NULL) | |
9088 | sarch = gdbarch; | |
281d762b TT |
9089 | std::string msg; |
9090 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9091 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9092 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9093 | } |
9094 | } | |
9095 | ||
018d34a4 VP |
9096 | /* Given TOK, a string specification of condition and thread, as |
9097 | accepted by the 'break' command, extract the condition | |
9098 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9099 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9100 | If no condition is found, *COND_STRING is set to NULL. |
9101 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9102 | |
9103 | static void | |
bbc13ae3 | 9104 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9105 | char **cond_string, int *thread, int *task, |
9106 | char **rest) | |
018d34a4 VP |
9107 | { |
9108 | *cond_string = NULL; | |
9109 | *thread = -1; | |
ed1d1739 KS |
9110 | *task = 0; |
9111 | *rest = NULL; | |
9112 | ||
018d34a4 VP |
9113 | while (tok && *tok) |
9114 | { | |
bbc13ae3 | 9115 | const char *end_tok; |
018d34a4 | 9116 | int toklen; |
bbc13ae3 KS |
9117 | const char *cond_start = NULL; |
9118 | const char *cond_end = NULL; | |
cc59ec59 | 9119 | |
f1735a53 | 9120 | tok = skip_spaces (tok); |
e7e0cddf SS |
9121 | |
9122 | if ((*tok == '"' || *tok == ',') && rest) | |
9123 | { | |
9124 | *rest = savestring (tok, strlen (tok)); | |
9125 | return; | |
9126 | } | |
9127 | ||
f1735a53 | 9128 | end_tok = skip_to_space (tok); |
d634f2de | 9129 | |
018d34a4 | 9130 | toklen = end_tok - tok; |
d634f2de | 9131 | |
018d34a4 VP |
9132 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9133 | { | |
9134 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9135 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9136 | cond_end = tok; |
d634f2de | 9137 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9138 | } |
9139 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9140 | { | |
5d5658a1 PA |
9141 | const char *tmptok; |
9142 | struct thread_info *thr; | |
d634f2de | 9143 | |
018d34a4 | 9144 | tok = end_tok + 1; |
5d5658a1 | 9145 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9146 | if (tok == tmptok) |
9147 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9148 | *thread = thr->global_num; |
bbc13ae3 | 9149 | tok = tmptok; |
018d34a4 | 9150 | } |
4a306c9a JB |
9151 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9152 | { | |
9153 | char *tmptok; | |
9154 | ||
9155 | tok = end_tok + 1; | |
bbc13ae3 | 9156 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9157 | if (tok == tmptok) |
9158 | error (_("Junk after task keyword.")); | |
9159 | if (!valid_task_id (*task)) | |
b6199126 | 9160 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9161 | tok = tmptok; |
4a306c9a | 9162 | } |
e7e0cddf SS |
9163 | else if (rest) |
9164 | { | |
9165 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9166 | return; |
e7e0cddf | 9167 | } |
018d34a4 VP |
9168 | else |
9169 | error (_("Junk at end of arguments.")); | |
9170 | } | |
9171 | } | |
9172 | ||
0fb4aa4b PA |
9173 | /* Decode a static tracepoint marker spec. */ |
9174 | ||
6c5b2ebe | 9175 | static std::vector<symtab_and_line> |
f00aae0f | 9176 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9177 | { |
f00aae0f KS |
9178 | const char *p = &(*arg_p)[3]; |
9179 | const char *endp; | |
0fb4aa4b | 9180 | |
f1735a53 | 9181 | p = skip_spaces (p); |
0fb4aa4b | 9182 | |
f1735a53 | 9183 | endp = skip_to_space (p); |
0fb4aa4b | 9184 | |
81b1e71c | 9185 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9186 | |
5d9310c4 SM |
9187 | std::vector<static_tracepoint_marker> markers |
9188 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9189 | if (markers.empty ()) | |
81b1e71c TT |
9190 | error (_("No known static tracepoint marker named %s"), |
9191 | marker_str.c_str ()); | |
0fb4aa4b | 9192 | |
6c5b2ebe | 9193 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9194 | sals.reserve (markers.size ()); |
0fb4aa4b | 9195 | |
5d9310c4 | 9196 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9197 | { |
5d9310c4 SM |
9198 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9199 | sal.pc = marker.address; | |
6c5b2ebe | 9200 | sals.push_back (sal); |
5d9310c4 | 9201 | } |
0fb4aa4b | 9202 | |
0fb4aa4b PA |
9203 | *arg_p = endp; |
9204 | return sals; | |
9205 | } | |
9206 | ||
f00aae0f | 9207 | /* See breakpoint.h. */ |
0101ce28 | 9208 | |
8cdf0e15 VP |
9209 | int |
9210 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9211 | const struct event_location *location, |
9212 | const char *cond_string, | |
9213 | int thread, const char *extra_string, | |
f00aae0f | 9214 | int parse_extra, |
0fb4aa4b | 9215 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9216 | int ignore_count, |
9217 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9218 | const struct breakpoint_ops *ops, |
44f238bb PA |
9219 | int from_tty, int enabled, int internal, |
9220 | unsigned flags) | |
c3f6f71d | 9221 | { |
7efd8fc2 | 9222 | struct linespec_result canonical; |
0101ce28 | 9223 | int pending = 0; |
4a306c9a | 9224 | int task = 0; |
86b17b60 | 9225 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9226 | |
348d480f PA |
9227 | gdb_assert (ops != NULL); |
9228 | ||
f00aae0f KS |
9229 | /* If extra_string isn't useful, set it to NULL. */ |
9230 | if (extra_string != NULL && *extra_string == '\0') | |
9231 | extra_string = NULL; | |
9232 | ||
a70b8144 | 9233 | try |
b78a6381 | 9234 | { |
f00aae0f | 9235 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9236 | } |
230d2906 | 9237 | catch (const gdb_exception_error &e) |
0101ce28 | 9238 | { |
492d29ea PA |
9239 | /* If caller is interested in rc value from parse, set |
9240 | value. */ | |
9241 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9242 | { |
05ff989b AC |
9243 | /* If pending breakpoint support is turned off, throw |
9244 | error. */ | |
fa8d40ab JJ |
9245 | |
9246 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9247 | throw; |
723a2275 VP |
9248 | |
9249 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9250 | |
05ff989b AC |
9251 | /* If pending breakpoint support is auto query and the user |
9252 | selects no, then simply return the error code. */ | |
059fb39f | 9253 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9254 | && !nquery (_("Make %s pending on future shared library load? "), |
9255 | bptype_string (type_wanted))) | |
fd9b8c24 | 9256 | return 0; |
fa8d40ab | 9257 | |
05ff989b AC |
9258 | /* At this point, either the user was queried about setting |
9259 | a pending breakpoint and selected yes, or pending | |
9260 | breakpoint behavior is on and thus a pending breakpoint | |
9261 | is defaulted on behalf of the user. */ | |
f00aae0f | 9262 | pending = 1; |
0101ce28 | 9263 | } |
492d29ea | 9264 | else |
eedc3f4f | 9265 | throw; |
0101ce28 | 9266 | } |
492d29ea | 9267 | |
6c5b2ebe | 9268 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9269 | return 0; |
c3f6f71d | 9270 | |
c3f6f71d JM |
9271 | /* Resolve all line numbers to PC's and verify that the addresses |
9272 | are ok for the target. */ | |
0101ce28 | 9273 | if (!pending) |
f8eba3c6 | 9274 | { |
6c5b2ebe PA |
9275 | for (auto &lsal : canonical.lsals) |
9276 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9277 | } |
c3f6f71d | 9278 | |
7a697b8d | 9279 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9280 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9281 | { |
6c5b2ebe PA |
9282 | for (const auto &lsal : canonical.lsals) |
9283 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9284 | } |
7a697b8d | 9285 | |
c3f6f71d JM |
9286 | /* Verify that condition can be parsed, before setting any |
9287 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9288 | breakpoint. */ |
0101ce28 | 9289 | if (!pending) |
c3f6f71d | 9290 | { |
e1e01040 PA |
9291 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9292 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9293 | ||
f00aae0f | 9294 | if (parse_extra) |
72b2ff0e | 9295 | { |
0878d0fa | 9296 | char *rest; |
e1e01040 | 9297 | char *cond; |
52d361e1 | 9298 | |
6c5b2ebe | 9299 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9300 | |
0878d0fa YQ |
9301 | /* Here we only parse 'arg' to separate condition |
9302 | from thread number, so parsing in context of first | |
9303 | sal is OK. When setting the breakpoint we'll | |
9304 | re-parse it in context of each sal. */ | |
9305 | ||
6c5b2ebe | 9306 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9307 | &cond, &thread, &task, &rest); |
9308 | cond_string_copy.reset (cond); | |
9309 | extra_string_copy.reset (rest); | |
72b2ff0e | 9310 | } |
2f069f6f | 9311 | else |
72b2ff0e | 9312 | { |
f00aae0f KS |
9313 | if (type_wanted != bp_dprintf |
9314 | && extra_string != NULL && *extra_string != '\0') | |
9315 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9316 | |
9317 | /* Create a private copy of condition string. */ | |
9318 | if (cond_string) | |
e1e01040 | 9319 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9320 | /* Create a private copy of any extra string. */ |
9321 | if (extra_string) | |
e1e01040 | 9322 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9323 | } |
0fb4aa4b | 9324 | |
52d361e1 | 9325 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9326 | std::move (cond_string_copy), |
9327 | std::move (extra_string_copy), | |
9328 | type_wanted, | |
d9b3f62e PA |
9329 | tempflag ? disp_del : disp_donttouch, |
9330 | thread, task, ignore_count, ops, | |
44f238bb | 9331 | from_tty, enabled, internal, flags); |
c906108c | 9332 | } |
0101ce28 JJ |
9333 | else |
9334 | { | |
a5e364af | 9335 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9336 | |
a5e364af | 9337 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9338 | b->location = copy_event_location (location); |
bfccc43c | 9339 | |
f00aae0f KS |
9340 | if (parse_extra) |
9341 | b->cond_string = NULL; | |
e12c7713 MK |
9342 | else |
9343 | { | |
9344 | /* Create a private copy of condition string. */ | |
e1e01040 | 9345 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9346 | b->thread = thread; |
e12c7713 | 9347 | } |
f00aae0f KS |
9348 | |
9349 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9350 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9351 | b->ignore_count = ignore_count; |
0101ce28 | 9352 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9353 | b->condition_not_parsed = 1; |
41447f92 | 9354 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9355 | if ((type_wanted != bp_breakpoint |
9356 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9357 | b->pspace = current_program_space; |
8bea4e01 | 9358 | |
b270e6f9 | 9359 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9360 | } |
9361 | ||
6c5b2ebe | 9362 | if (canonical.lsals.size () > 1) |
95a42b64 | 9363 | { |
3e43a32a MS |
9364 | warning (_("Multiple breakpoints were set.\nUse the " |
9365 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9366 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9367 | } |
9368 | ||
44702360 | 9369 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9370 | |
9371 | return 1; | |
c3f6f71d | 9372 | } |
c906108c | 9373 | |
348d480f | 9374 | /* Set a breakpoint. |
72b2ff0e VP |
9375 | ARG is a string describing breakpoint address, |
9376 | condition, and thread. | |
9377 | FLAG specifies if a breakpoint is hardware on, | |
9378 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9379 | and BP_TEMPFLAG. */ | |
348d480f | 9380 | |
98deb0da | 9381 | static void |
f2fc3015 | 9382 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9383 | { |
72b2ff0e | 9384 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9385 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9386 | ? bp_hardware_breakpoint | |
9387 | : bp_breakpoint); | |
55aa24fb | 9388 | struct breakpoint_ops *ops; |
f00aae0f | 9389 | |
ffc2605c | 9390 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9391 | |
9392 | /* Matching breakpoints on probes. */ | |
5b56227b | 9393 | if (location != NULL |
ffc2605c | 9394 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9395 | ops = &bkpt_probe_breakpoint_ops; |
9396 | else | |
9397 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9398 | |
8cdf0e15 | 9399 | create_breakpoint (get_current_arch (), |
ffc2605c | 9400 | location.get (), |
f00aae0f | 9401 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9402 | tempflag, type_wanted, |
8cdf0e15 VP |
9403 | 0 /* Ignore count */, |
9404 | pending_break_support, | |
55aa24fb | 9405 | ops, |
8cdf0e15 | 9406 | from_tty, |
84f4c1fe | 9407 | 1 /* enabled */, |
44f238bb PA |
9408 | 0 /* internal */, |
9409 | 0); | |
c906108c SS |
9410 | } |
9411 | ||
c906108c SS |
9412 | /* Helper function for break_command_1 and disassemble_command. */ |
9413 | ||
9414 | void | |
fba45db2 | 9415 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9416 | { |
9417 | CORE_ADDR pc; | |
9418 | ||
9419 | if (sal->pc == 0 && sal->symtab != NULL) | |
9420 | { | |
9421 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9422 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9423 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9424 | sal->pc = pc; |
6a048695 | 9425 | |
4a64f543 MS |
9426 | /* If this SAL corresponds to a breakpoint inserted using a line |
9427 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9428 | if (sal->explicit_line) |
059acae7 | 9429 | skip_prologue_sal (sal); |
c906108c SS |
9430 | } |
9431 | ||
9432 | if (sal->section == 0 && sal->symtab != NULL) | |
9433 | { | |
346d1dfe | 9434 | const struct blockvector *bv; |
3977b71f | 9435 | const struct block *b; |
c5aa993b | 9436 | struct symbol *sym; |
c906108c | 9437 | |
43f3e411 DE |
9438 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9439 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9440 | if (bv != NULL) |
9441 | { | |
7f0df278 | 9442 | sym = block_linkage_function (b); |
c906108c SS |
9443 | if (sym != NULL) |
9444 | { | |
eb822aa6 DE |
9445 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9446 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9447 | sym); | |
c906108c SS |
9448 | } |
9449 | else | |
9450 | { | |
4a64f543 MS |
9451 | /* It really is worthwhile to have the section, so we'll |
9452 | just have to look harder. This case can be executed | |
9453 | if we have line numbers but no functions (as can | |
9454 | happen in assembly source). */ | |
c906108c | 9455 | |
5ed8105e | 9456 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9457 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9458 | |
5ed8105e | 9459 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9460 | if (msym.minsym) |
efd66ac6 | 9461 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9462 | } |
9463 | } | |
9464 | } | |
9465 | } | |
9466 | ||
9467 | void | |
0b39b52e | 9468 | break_command (const char *arg, int from_tty) |
c906108c | 9469 | { |
db107f19 | 9470 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9471 | } |
9472 | ||
c906108c | 9473 | void |
0b39b52e | 9474 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9475 | { |
db107f19 | 9476 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9477 | } |
9478 | ||
c906108c | 9479 | static void |
0b39b52e | 9480 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9481 | { |
db107f19 | 9482 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9483 | } |
9484 | ||
9485 | static void | |
0b39b52e | 9486 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9487 | { |
db107f19 | 9488 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9489 | } |
9490 | ||
9491 | static void | |
ee7ddd71 | 9492 | stop_command (const char *arg, int from_tty) |
c906108c | 9493 | { |
a3f17187 | 9494 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9495 | Usage: stop in <function | address>\n\ |
a3f17187 | 9496 | stop at <line>\n")); |
c906108c SS |
9497 | } |
9498 | ||
9499 | static void | |
4495129a | 9500 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9501 | { |
9502 | int badInput = 0; | |
9503 | ||
c5aa993b | 9504 | if (arg == (char *) NULL) |
c906108c SS |
9505 | badInput = 1; |
9506 | else if (*arg != '*') | |
9507 | { | |
4495129a | 9508 | const char *argptr = arg; |
c906108c SS |
9509 | int hasColon = 0; |
9510 | ||
4a64f543 | 9511 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9512 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9513 | function/method name. */ |
c906108c | 9514 | while (*argptr && !hasColon) |
c5aa993b JM |
9515 | { |
9516 | hasColon = (*argptr == ':'); | |
9517 | argptr++; | |
9518 | } | |
c906108c SS |
9519 | |
9520 | if (hasColon) | |
c5aa993b | 9521 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9522 | else |
c5aa993b | 9523 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9524 | } |
9525 | ||
9526 | if (badInput) | |
a3f17187 | 9527 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9528 | else |
db107f19 | 9529 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9530 | } |
9531 | ||
9532 | static void | |
4495129a | 9533 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9534 | { |
9535 | int badInput = 0; | |
9536 | ||
c5aa993b | 9537 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9538 | badInput = 1; |
9539 | else | |
9540 | { | |
4495129a | 9541 | const char *argptr = arg; |
c906108c SS |
9542 | int hasColon = 0; |
9543 | ||
4a64f543 MS |
9544 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9545 | it is probably a line number. */ | |
c906108c | 9546 | while (*argptr && !hasColon) |
c5aa993b JM |
9547 | { |
9548 | hasColon = (*argptr == ':'); | |
9549 | argptr++; | |
9550 | } | |
c906108c SS |
9551 | |
9552 | if (hasColon) | |
c5aa993b | 9553 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9554 | else |
c5aa993b | 9555 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9556 | } |
9557 | ||
9558 | if (badInput) | |
65e65158 | 9559 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9560 | else |
db107f19 | 9561 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9562 | } |
9563 | ||
e7e0cddf SS |
9564 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9565 | with a prewired command list consisting of a single output command, | |
9566 | built from extra arguments supplied on the dprintf command | |
9567 | line. */ | |
9568 | ||
da821c7b | 9569 | static void |
0b39b52e | 9570 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9571 | { |
ffc2605c | 9572 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9573 | |
9574 | /* If non-NULL, ARG should have been advanced past the location; | |
9575 | the next character must be ','. */ | |
9576 | if (arg != NULL) | |
9577 | { | |
9578 | if (arg[0] != ',' || arg[1] == '\0') | |
9579 | error (_("Format string required")); | |
9580 | else | |
9581 | { | |
9582 | /* Skip the comma. */ | |
9583 | ++arg; | |
9584 | } | |
9585 | } | |
9586 | ||
e7e0cddf | 9587 | create_breakpoint (get_current_arch (), |
ffc2605c | 9588 | location.get (), |
f00aae0f | 9589 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9590 | 0, bp_dprintf, |
9591 | 0 /* Ignore count */, | |
9592 | pending_break_support, | |
9593 | &dprintf_breakpoint_ops, | |
9594 | from_tty, | |
9595 | 1 /* enabled */, | |
9596 | 0 /* internal */, | |
9597 | 0); | |
9598 | } | |
9599 | ||
d3ce09f5 | 9600 | static void |
0b39b52e | 9601 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9602 | { |
9603 | error (_("May only run agent-printf on the target")); | |
9604 | } | |
9605 | ||
f1310107 TJB |
9606 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9607 | ranged breakpoints. */ | |
9608 | ||
9609 | static int | |
9610 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9611 | const address_space *aspace, |
09ac7c10 TT |
9612 | CORE_ADDR bp_addr, |
9613 | const struct target_waitstatus *ws) | |
f1310107 | 9614 | { |
09ac7c10 | 9615 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9616 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9617 | return 0; |
9618 | ||
f1310107 TJB |
9619 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9620 | bl->length, aspace, bp_addr); | |
9621 | } | |
9622 | ||
9623 | /* Implement the "resources_needed" breakpoint_ops method for | |
9624 | ranged breakpoints. */ | |
9625 | ||
9626 | static int | |
9627 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9628 | { | |
9629 | return target_ranged_break_num_registers (); | |
9630 | } | |
9631 | ||
9632 | /* Implement the "print_it" breakpoint_ops method for | |
9633 | ranged breakpoints. */ | |
9634 | ||
9635 | static enum print_stop_action | |
348d480f | 9636 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9637 | { |
348d480f | 9638 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9639 | struct bp_location *bl = b->loc; |
79a45e25 | 9640 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9641 | |
9642 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9643 | ||
9644 | /* Ranged breakpoints have only one location. */ | |
9645 | gdb_assert (bl && bl->next == NULL); | |
9646 | ||
9647 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9648 | |
9649 | maybe_print_thread_hit_breakpoint (uiout); | |
9650 | ||
f1310107 | 9651 | if (b->disposition == disp_del) |
112e8700 | 9652 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9653 | else |
112e8700 SM |
9654 | uiout->text ("Ranged breakpoint "); |
9655 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9656 | { |
112e8700 | 9657 | uiout->field_string ("reason", |
f1310107 | 9658 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9659 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9660 | } |
112e8700 SM |
9661 | uiout->field_int ("bkptno", b->number); |
9662 | uiout->text (", "); | |
f1310107 TJB |
9663 | |
9664 | return PRINT_SRC_AND_LOC; | |
9665 | } | |
9666 | ||
9667 | /* Implement the "print_one" breakpoint_ops method for | |
9668 | ranged breakpoints. */ | |
9669 | ||
9670 | static void | |
9671 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9672 | struct bp_location **last_loc) | |
9673 | { | |
9674 | struct bp_location *bl = b->loc; | |
9675 | struct value_print_options opts; | |
79a45e25 | 9676 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9677 | |
9678 | /* Ranged breakpoints have only one location. */ | |
9679 | gdb_assert (bl && bl->next == NULL); | |
9680 | ||
9681 | get_user_print_options (&opts); | |
9682 | ||
9683 | if (opts.addressprint) | |
9684 | /* We don't print the address range here, it will be printed later | |
9685 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9686 | uiout->field_skip ("addr"); |
f1310107 TJB |
9687 | annotate_field (5); |
9688 | print_breakpoint_location (b, bl); | |
9689 | *last_loc = bl; | |
9690 | } | |
9691 | ||
9692 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9693 | ranged breakpoints. */ | |
9694 | ||
9695 | static void | |
9696 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9697 | struct ui_out *uiout) | |
9698 | { | |
9699 | CORE_ADDR address_start, address_end; | |
9700 | struct bp_location *bl = b->loc; | |
d7e74731 | 9701 | string_file stb; |
f1310107 TJB |
9702 | |
9703 | gdb_assert (bl); | |
9704 | ||
9705 | address_start = bl->address; | |
9706 | address_end = address_start + bl->length - 1; | |
9707 | ||
112e8700 | 9708 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9709 | stb.printf ("[%s, %s]", |
9710 | print_core_address (bl->gdbarch, address_start), | |
9711 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9712 | uiout->field_stream ("addr", stb); |
9713 | uiout->text ("\n"); | |
f1310107 TJB |
9714 | } |
9715 | ||
9716 | /* Implement the "print_mention" breakpoint_ops method for | |
9717 | ranged breakpoints. */ | |
9718 | ||
9719 | static void | |
9720 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9721 | { | |
9722 | struct bp_location *bl = b->loc; | |
79a45e25 | 9723 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9724 | |
9725 | gdb_assert (bl); | |
9726 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9727 | ||
2d33446d TT |
9728 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9729 | b->number, paddress (bl->gdbarch, bl->address), | |
9730 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9731 | } |
9732 | ||
9733 | /* Implement the "print_recreate" breakpoint_ops method for | |
9734 | ranged breakpoints. */ | |
9735 | ||
9736 | static void | |
9737 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9738 | { | |
f00aae0f | 9739 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9740 | event_location_to_string (b->location.get ()), |
9741 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9742 | print_recreate_thread (b, fp); |
f1310107 TJB |
9743 | } |
9744 | ||
9745 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9746 | ||
2060206e | 9747 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9748 | |
9749 | /* Find the address where the end of the breakpoint range should be | |
9750 | placed, given the SAL of the end of the range. This is so that if | |
9751 | the user provides a line number, the end of the range is set to the | |
9752 | last instruction of the given line. */ | |
9753 | ||
9754 | static CORE_ADDR | |
9755 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9756 | { | |
9757 | CORE_ADDR end; | |
9758 | ||
9759 | /* If the user provided a PC value, use it. Otherwise, | |
9760 | find the address of the end of the given location. */ | |
9761 | if (sal.explicit_pc) | |
9762 | end = sal.pc; | |
9763 | else | |
9764 | { | |
9765 | int ret; | |
9766 | CORE_ADDR start; | |
9767 | ||
9768 | ret = find_line_pc_range (sal, &start, &end); | |
9769 | if (!ret) | |
9770 | error (_("Could not find location of the end of the range.")); | |
9771 | ||
9772 | /* find_line_pc_range returns the start of the next line. */ | |
9773 | end--; | |
9774 | } | |
9775 | ||
9776 | return end; | |
9777 | } | |
9778 | ||
9779 | /* Implement the "break-range" CLI command. */ | |
9780 | ||
9781 | static void | |
0b39b52e | 9782 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9783 | { |
f2fc3015 | 9784 | const char *arg_start; |
f1310107 TJB |
9785 | struct linespec_result canonical_start, canonical_end; |
9786 | int bp_count, can_use_bp, length; | |
9787 | CORE_ADDR end; | |
9788 | struct breakpoint *b; | |
f1310107 TJB |
9789 | |
9790 | /* We don't support software ranged breakpoints. */ | |
9791 | if (target_ranged_break_num_registers () < 0) | |
9792 | error (_("This target does not support hardware ranged breakpoints.")); | |
9793 | ||
9794 | bp_count = hw_breakpoint_used_count (); | |
9795 | bp_count += target_ranged_break_num_registers (); | |
9796 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9797 | bp_count, 0); | |
9798 | if (can_use_bp < 0) | |
9799 | error (_("Hardware breakpoints used exceeds limit.")); | |
9800 | ||
f8eba3c6 | 9801 | arg = skip_spaces (arg); |
f1310107 TJB |
9802 | if (arg == NULL || arg[0] == '\0') |
9803 | error(_("No address range specified.")); | |
9804 | ||
f8eba3c6 | 9805 | arg_start = arg; |
ffc2605c TT |
9806 | event_location_up start_location = string_to_event_location (&arg, |
9807 | current_language); | |
9808 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9809 | |
9810 | if (arg[0] != ',') | |
9811 | error (_("Too few arguments.")); | |
6c5b2ebe | 9812 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9813 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9814 | |
6c5b2ebe | 9815 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9816 | |
6c5b2ebe PA |
9817 | if (canonical_start.lsals.size () > 1 |
9818 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9819 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9820 | ||
6c5b2ebe | 9821 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9822 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9823 | |
9824 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9825 | arg = skip_spaces (arg); |
f1310107 TJB |
9826 | |
9827 | /* Parse the end location. */ | |
9828 | ||
f1310107 TJB |
9829 | arg_start = arg; |
9830 | ||
f8eba3c6 | 9831 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9832 | parse_breakpoint_sals because we need to specify the start location's |
9833 | symtab and line as the default symtab and line for the end of the | |
9834 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9835 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9836 | event_location_up end_location = string_to_event_location (&arg, |
9837 | current_language); | |
9838 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9839 | sal_start.symtab, sal_start.line, |
9840 | &canonical_end, NULL, NULL); | |
9841 | ||
6c5b2ebe | 9842 | if (canonical_end.lsals.empty ()) |
f1310107 | 9843 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9844 | |
6c5b2ebe PA |
9845 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9846 | if (canonical_end.lsals.size () > 1 | |
9847 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9848 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9849 | ||
6c5b2ebe | 9850 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9851 | |
9852 | end = find_breakpoint_range_end (sal_end); | |
9853 | if (sal_start.pc > end) | |
177b42fe | 9854 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9855 | |
9856 | length = end - sal_start.pc + 1; | |
9857 | if (length < 0) | |
9858 | /* Length overflowed. */ | |
9859 | error (_("Address range too large.")); | |
9860 | else if (length == 1) | |
9861 | { | |
9862 | /* This range is simple enough to be handled by | |
9863 | the `hbreak' command. */ | |
81b1e71c | 9864 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9865 | |
9866 | return; | |
9867 | } | |
9868 | ||
9869 | /* Now set up the breakpoint. */ | |
9870 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9871 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9872 | set_breakpoint_count (breakpoint_count + 1); |
9873 | b->number = breakpoint_count; | |
9874 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9875 | b->location = std::move (start_location); |
9876 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9877 | b->loc->length = length; |
9878 | ||
f1310107 | 9879 | mention (b); |
76727919 | 9880 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9881 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9882 | } |
9883 | ||
4a64f543 MS |
9884 | /* Return non-zero if EXP is verified as constant. Returned zero |
9885 | means EXP is variable. Also the constant detection may fail for | |
9886 | some constant expressions and in such case still falsely return | |
9887 | zero. */ | |
2e6e3d9c | 9888 | |
65d79d4b SDJ |
9889 | static int |
9890 | watchpoint_exp_is_const (const struct expression *exp) | |
9891 | { | |
9892 | int i = exp->nelts; | |
9893 | ||
9894 | while (i > 0) | |
9895 | { | |
9896 | int oplenp, argsp; | |
9897 | ||
9898 | /* We are only interested in the descriptor of each element. */ | |
9899 | operator_length (exp, i, &oplenp, &argsp); | |
9900 | i -= oplenp; | |
9901 | ||
9902 | switch (exp->elts[i].opcode) | |
9903 | { | |
9904 | case BINOP_ADD: | |
9905 | case BINOP_SUB: | |
9906 | case BINOP_MUL: | |
9907 | case BINOP_DIV: | |
9908 | case BINOP_REM: | |
9909 | case BINOP_MOD: | |
9910 | case BINOP_LSH: | |
9911 | case BINOP_RSH: | |
9912 | case BINOP_LOGICAL_AND: | |
9913 | case BINOP_LOGICAL_OR: | |
9914 | case BINOP_BITWISE_AND: | |
9915 | case BINOP_BITWISE_IOR: | |
9916 | case BINOP_BITWISE_XOR: | |
9917 | case BINOP_EQUAL: | |
9918 | case BINOP_NOTEQUAL: | |
9919 | case BINOP_LESS: | |
9920 | case BINOP_GTR: | |
9921 | case BINOP_LEQ: | |
9922 | case BINOP_GEQ: | |
9923 | case BINOP_REPEAT: | |
9924 | case BINOP_COMMA: | |
9925 | case BINOP_EXP: | |
9926 | case BINOP_MIN: | |
9927 | case BINOP_MAX: | |
9928 | case BINOP_INTDIV: | |
9929 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9930 | case TERNOP_COND: |
9931 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9932 | |
9933 | case OP_LONG: | |
edd079d9 | 9934 | case OP_FLOAT: |
65d79d4b SDJ |
9935 | case OP_LAST: |
9936 | case OP_COMPLEX: | |
9937 | case OP_STRING: | |
65d79d4b SDJ |
9938 | case OP_ARRAY: |
9939 | case OP_TYPE: | |
608b4967 TT |
9940 | case OP_TYPEOF: |
9941 | case OP_DECLTYPE: | |
6e72ca20 | 9942 | case OP_TYPEID: |
65d79d4b SDJ |
9943 | case OP_NAME: |
9944 | case OP_OBJC_NSSTRING: | |
9945 | ||
9946 | case UNOP_NEG: | |
9947 | case UNOP_LOGICAL_NOT: | |
9948 | case UNOP_COMPLEMENT: | |
9949 | case UNOP_ADDR: | |
9950 | case UNOP_HIGH: | |
aeaa2474 | 9951 | case UNOP_CAST: |
9eaf6705 TT |
9952 | |
9953 | case UNOP_CAST_TYPE: | |
9954 | case UNOP_REINTERPRET_CAST: | |
9955 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9956 | /* Unary, binary and ternary operators: We have to check |
9957 | their operands. If they are constant, then so is the | |
9958 | result of that operation. For instance, if A and B are | |
9959 | determined to be constants, then so is "A + B". | |
9960 | ||
9961 | UNOP_IND is one exception to the rule above, because the | |
9962 | value of *ADDR is not necessarily a constant, even when | |
9963 | ADDR is. */ | |
65d79d4b SDJ |
9964 | break; |
9965 | ||
9966 | case OP_VAR_VALUE: | |
9967 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9968 | |
65d79d4b | 9969 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9970 | possible that a buggy compiler could mark a variable as |
9971 | constant even when it is not, and TYPE_CONST would return | |
9972 | true in this case, while SYMBOL_CLASS wouldn't. | |
9973 | ||
9974 | We also have to check for function symbols because they | |
9975 | are always constant. */ | |
65d79d4b SDJ |
9976 | { |
9977 | struct symbol *s = exp->elts[i + 2].symbol; | |
9978 | ||
9979 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9980 | && SYMBOL_CLASS (s) != LOC_CONST | |
9981 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9982 | return 0; | |
9983 | break; | |
9984 | } | |
9985 | ||
9986 | /* The default action is to return 0 because we are using | |
9987 | the optimistic approach here: If we don't know something, | |
9988 | then it is not a constant. */ | |
9989 | default: | |
9990 | return 0; | |
9991 | } | |
9992 | } | |
9993 | ||
9994 | return 1; | |
9995 | } | |
9996 | ||
c1fc2657 | 9997 | /* Watchpoint destructor. */ |
3a5c3e22 | 9998 | |
c1fc2657 | 9999 | watchpoint::~watchpoint () |
3a5c3e22 | 10000 | { |
c1fc2657 SM |
10001 | xfree (this->exp_string); |
10002 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10003 | } |
10004 | ||
348d480f PA |
10005 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10006 | ||
10007 | static void | |
10008 | re_set_watchpoint (struct breakpoint *b) | |
10009 | { | |
3a5c3e22 PA |
10010 | struct watchpoint *w = (struct watchpoint *) b; |
10011 | ||
348d480f PA |
10012 | /* Watchpoint can be either on expression using entirely global |
10013 | variables, or it can be on local variables. | |
10014 | ||
10015 | Watchpoints of the first kind are never auto-deleted, and even | |
10016 | persist across program restarts. Since they can use variables | |
10017 | from shared libraries, we need to reparse expression as libraries | |
10018 | are loaded and unloaded. | |
10019 | ||
10020 | Watchpoints on local variables can also change meaning as result | |
10021 | of solib event. For example, if a watchpoint uses both a local | |
10022 | and a global variables in expression, it's a local watchpoint, | |
10023 | but unloading of a shared library will make the expression | |
10024 | invalid. This is not a very common use case, but we still | |
10025 | re-evaluate expression, to avoid surprises to the user. | |
10026 | ||
10027 | Note that for local watchpoints, we re-evaluate it only if | |
10028 | watchpoints frame id is still valid. If it's not, it means the | |
10029 | watchpoint is out of scope and will be deleted soon. In fact, | |
10030 | I'm not sure we'll ever be called in this case. | |
10031 | ||
10032 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10033 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10034 | |
3a5c3e22 PA |
10035 | Don't do anything about disabled watchpoints, since they will be |
10036 | reevaluated again when enabled. */ | |
10037 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10038 | } |
10039 | ||
77b06cd7 TJB |
10040 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10041 | ||
10042 | static int | |
10043 | insert_watchpoint (struct bp_location *bl) | |
10044 | { | |
3a5c3e22 PA |
10045 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10046 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10047 | |
10048 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10049 | w->cond_exp.get ()); |
77b06cd7 TJB |
10050 | } |
10051 | ||
10052 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10053 | ||
10054 | static int | |
73971819 | 10055 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10056 | { |
3a5c3e22 PA |
10057 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10058 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10059 | |
10060 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10061 | w->cond_exp.get ()); |
e09342b5 TJB |
10062 | } |
10063 | ||
e09342b5 | 10064 | static int |
348d480f | 10065 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10066 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10067 | const struct target_waitstatus *ws) |
e09342b5 | 10068 | { |
348d480f | 10069 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10070 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10071 | |
348d480f PA |
10072 | /* Continuable hardware watchpoints are treated as non-existent if the |
10073 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10074 | some data address). Otherwise gdb won't stop on a break instruction | |
10075 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10076 | been defined. Also skip watchpoints which we know did not trigger | |
10077 | (did not match the data address). */ | |
10078 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10079 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10080 | return 0; |
9c06b0b4 | 10081 | |
348d480f | 10082 | return 1; |
9c06b0b4 TJB |
10083 | } |
10084 | ||
348d480f PA |
10085 | static void |
10086 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10087 | { |
348d480f | 10088 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10089 | |
348d480f | 10090 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10091 | } |
10092 | ||
10093 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10094 | hardware watchpoints. */ |
9c06b0b4 TJB |
10095 | |
10096 | static int | |
348d480f | 10097 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10098 | { |
3a5c3e22 PA |
10099 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10100 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10101 | |
10102 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10103 | } |
10104 | ||
10105 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10106 | hardware watchpoints. */ |
9c06b0b4 TJB |
10107 | |
10108 | static int | |
348d480f | 10109 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10110 | { |
efa80663 PA |
10111 | /* Read and access watchpoints only work with hardware support. */ |
10112 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10113 | } |
10114 | ||
9c06b0b4 | 10115 | static enum print_stop_action |
348d480f | 10116 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10117 | { |
348d480f | 10118 | struct breakpoint *b; |
348d480f | 10119 | enum print_stop_action result; |
3a5c3e22 | 10120 | struct watchpoint *w; |
79a45e25 | 10121 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10122 | |
10123 | gdb_assert (bs->bp_location_at != NULL); | |
10124 | ||
348d480f | 10125 | b = bs->breakpoint_at; |
3a5c3e22 | 10126 | w = (struct watchpoint *) b; |
348d480f | 10127 | |
f303dbd6 PA |
10128 | annotate_watchpoint (b->number); |
10129 | maybe_print_thread_hit_breakpoint (uiout); | |
10130 | ||
d7e74731 PA |
10131 | string_file stb; |
10132 | ||
76f9c9cf | 10133 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10134 | switch (b->type) |
10135 | { | |
348d480f | 10136 | case bp_watchpoint: |
9c06b0b4 | 10137 | case bp_hardware_watchpoint: |
112e8700 SM |
10138 | if (uiout->is_mi_like_p ()) |
10139 | uiout->field_string | |
10140 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10141 | mention (b); |
76f9c9cf | 10142 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10143 | uiout->text ("\nOld value = "); |
850645cf | 10144 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10145 | uiout->field_stream ("old", stb); |
10146 | uiout->text ("\nNew value = "); | |
850645cf | 10147 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10148 | uiout->field_stream ("new", stb); |
10149 | uiout->text ("\n"); | |
348d480f PA |
10150 | /* More than one watchpoint may have been triggered. */ |
10151 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10152 | break; |
10153 | ||
10154 | case bp_read_watchpoint: | |
112e8700 SM |
10155 | if (uiout->is_mi_like_p ()) |
10156 | uiout->field_string | |
10157 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10158 | mention (b); |
76f9c9cf | 10159 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10160 | uiout->text ("\nValue = "); |
850645cf | 10161 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10162 | uiout->field_stream ("value", stb); |
10163 | uiout->text ("\n"); | |
348d480f | 10164 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10165 | break; |
10166 | ||
10167 | case bp_access_watchpoint: | |
348d480f PA |
10168 | if (bs->old_val != NULL) |
10169 | { | |
112e8700 SM |
10170 | if (uiout->is_mi_like_p ()) |
10171 | uiout->field_string | |
10172 | ("reason", | |
348d480f PA |
10173 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10174 | mention (b); | |
76f9c9cf | 10175 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10176 | uiout->text ("\nOld value = "); |
850645cf | 10177 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10178 | uiout->field_stream ("old", stb); |
10179 | uiout->text ("\nNew value = "); | |
348d480f PA |
10180 | } |
10181 | else | |
10182 | { | |
10183 | mention (b); | |
112e8700 SM |
10184 | if (uiout->is_mi_like_p ()) |
10185 | uiout->field_string | |
10186 | ("reason", | |
348d480f | 10187 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10188 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10189 | uiout->text ("\nValue = "); |
348d480f | 10190 | } |
850645cf | 10191 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10192 | uiout->field_stream ("new", stb); |
10193 | uiout->text ("\n"); | |
348d480f | 10194 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10195 | break; |
10196 | default: | |
348d480f | 10197 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10198 | } |
10199 | ||
348d480f PA |
10200 | return result; |
10201 | } | |
10202 | ||
10203 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10204 | watchpoints. */ | |
10205 | ||
10206 | static void | |
10207 | print_mention_watchpoint (struct breakpoint *b) | |
10208 | { | |
3a5c3e22 | 10209 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10210 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10211 | const char *tuple_name; |
348d480f PA |
10212 | |
10213 | switch (b->type) | |
10214 | { | |
10215 | case bp_watchpoint: | |
112e8700 | 10216 | uiout->text ("Watchpoint "); |
46b9c129 | 10217 | tuple_name = "wpt"; |
348d480f PA |
10218 | break; |
10219 | case bp_hardware_watchpoint: | |
112e8700 | 10220 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10221 | tuple_name = "wpt"; |
348d480f PA |
10222 | break; |
10223 | case bp_read_watchpoint: | |
112e8700 | 10224 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10225 | tuple_name = "hw-rwpt"; |
348d480f PA |
10226 | break; |
10227 | case bp_access_watchpoint: | |
112e8700 | 10228 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10229 | tuple_name = "hw-awpt"; |
348d480f PA |
10230 | break; |
10231 | default: | |
10232 | internal_error (__FILE__, __LINE__, | |
10233 | _("Invalid hardware watchpoint type.")); | |
10234 | } | |
10235 | ||
46b9c129 | 10236 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10237 | uiout->field_int ("number", b->number); |
10238 | uiout->text (": "); | |
10239 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10240 | } |
10241 | ||
10242 | /* Implement the "print_recreate" breakpoint_ops method for | |
10243 | watchpoints. */ | |
10244 | ||
10245 | static void | |
10246 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10247 | { | |
3a5c3e22 PA |
10248 | struct watchpoint *w = (struct watchpoint *) b; |
10249 | ||
348d480f PA |
10250 | switch (b->type) |
10251 | { | |
10252 | case bp_watchpoint: | |
10253 | case bp_hardware_watchpoint: | |
10254 | fprintf_unfiltered (fp, "watch"); | |
10255 | break; | |
10256 | case bp_read_watchpoint: | |
10257 | fprintf_unfiltered (fp, "rwatch"); | |
10258 | break; | |
10259 | case bp_access_watchpoint: | |
10260 | fprintf_unfiltered (fp, "awatch"); | |
10261 | break; | |
10262 | default: | |
10263 | internal_error (__FILE__, __LINE__, | |
10264 | _("Invalid watchpoint type.")); | |
10265 | } | |
10266 | ||
3a5c3e22 | 10267 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10268 | print_recreate_thread (b, fp); |
348d480f PA |
10269 | } |
10270 | ||
427cd150 TT |
10271 | /* Implement the "explains_signal" breakpoint_ops method for |
10272 | watchpoints. */ | |
10273 | ||
47591c29 | 10274 | static int |
427cd150 TT |
10275 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10276 | { | |
10277 | /* A software watchpoint cannot cause a signal other than | |
10278 | GDB_SIGNAL_TRAP. */ | |
10279 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10280 | return 0; |
427cd150 | 10281 | |
47591c29 | 10282 | return 1; |
427cd150 TT |
10283 | } |
10284 | ||
348d480f PA |
10285 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10286 | ||
2060206e | 10287 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10288 | |
10289 | /* Implement the "insert" breakpoint_ops method for | |
10290 | masked hardware watchpoints. */ | |
10291 | ||
10292 | static int | |
10293 | insert_masked_watchpoint (struct bp_location *bl) | |
10294 | { | |
3a5c3e22 PA |
10295 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10296 | ||
10297 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10298 | bl->watchpoint_type); |
10299 | } | |
10300 | ||
10301 | /* Implement the "remove" breakpoint_ops method for | |
10302 | masked hardware watchpoints. */ | |
10303 | ||
10304 | static int | |
73971819 | 10305 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10306 | { |
3a5c3e22 PA |
10307 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10308 | ||
10309 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10310 | bl->watchpoint_type); |
10311 | } | |
10312 | ||
10313 | /* Implement the "resources_needed" breakpoint_ops method for | |
10314 | masked hardware watchpoints. */ | |
10315 | ||
10316 | static int | |
10317 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10318 | { | |
3a5c3e22 PA |
10319 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10320 | ||
10321 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10322 | } |
10323 | ||
10324 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10325 | masked hardware watchpoints. */ | |
10326 | ||
10327 | static int | |
10328 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10329 | { | |
10330 | return 0; | |
10331 | } | |
10332 | ||
10333 | /* Implement the "print_it" breakpoint_ops method for | |
10334 | masked hardware watchpoints. */ | |
10335 | ||
10336 | static enum print_stop_action | |
10337 | print_it_masked_watchpoint (bpstat bs) | |
10338 | { | |
10339 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10340 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10341 | |
10342 | /* Masked watchpoints have only one location. */ | |
10343 | gdb_assert (b->loc && b->loc->next == NULL); | |
10344 | ||
f303dbd6 PA |
10345 | annotate_watchpoint (b->number); |
10346 | maybe_print_thread_hit_breakpoint (uiout); | |
10347 | ||
348d480f PA |
10348 | switch (b->type) |
10349 | { | |
10350 | case bp_hardware_watchpoint: | |
112e8700 SM |
10351 | if (uiout->is_mi_like_p ()) |
10352 | uiout->field_string | |
10353 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10354 | break; |
10355 | ||
10356 | case bp_read_watchpoint: | |
112e8700 SM |
10357 | if (uiout->is_mi_like_p ()) |
10358 | uiout->field_string | |
10359 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10360 | break; |
10361 | ||
10362 | case bp_access_watchpoint: | |
112e8700 SM |
10363 | if (uiout->is_mi_like_p ()) |
10364 | uiout->field_string | |
10365 | ("reason", | |
348d480f PA |
10366 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10367 | break; | |
10368 | default: | |
10369 | internal_error (__FILE__, __LINE__, | |
10370 | _("Invalid hardware watchpoint type.")); | |
10371 | } | |
10372 | ||
10373 | mention (b); | |
112e8700 | 10374 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10375 | Check the underlying instruction at PC for the memory\n\ |
10376 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10377 | uiout->text ("\n"); |
9c06b0b4 TJB |
10378 | |
10379 | /* More than one watchpoint may have been triggered. */ | |
10380 | return PRINT_UNKNOWN; | |
10381 | } | |
10382 | ||
10383 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10384 | masked hardware watchpoints. */ | |
10385 | ||
10386 | static void | |
10387 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10388 | struct ui_out *uiout) | |
10389 | { | |
3a5c3e22 PA |
10390 | struct watchpoint *w = (struct watchpoint *) b; |
10391 | ||
9c06b0b4 TJB |
10392 | /* Masked watchpoints have only one location. */ |
10393 | gdb_assert (b->loc && b->loc->next == NULL); | |
10394 | ||
112e8700 SM |
10395 | uiout->text ("\tmask "); |
10396 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10397 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10398 | } |
10399 | ||
10400 | /* Implement the "print_mention" breakpoint_ops method for | |
10401 | masked hardware watchpoints. */ | |
10402 | ||
10403 | static void | |
10404 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10405 | { | |
3a5c3e22 | 10406 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10407 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10408 | const char *tuple_name; |
9c06b0b4 TJB |
10409 | |
10410 | switch (b->type) | |
10411 | { | |
10412 | case bp_hardware_watchpoint: | |
112e8700 | 10413 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10414 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10415 | break; |
10416 | case bp_read_watchpoint: | |
112e8700 | 10417 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10418 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10419 | break; |
10420 | case bp_access_watchpoint: | |
112e8700 | 10421 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10422 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10423 | break; |
10424 | default: | |
10425 | internal_error (__FILE__, __LINE__, | |
10426 | _("Invalid hardware watchpoint type.")); | |
10427 | } | |
10428 | ||
46b9c129 | 10429 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10430 | uiout->field_int ("number", b->number); |
10431 | uiout->text (": "); | |
10432 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10433 | } |
10434 | ||
10435 | /* Implement the "print_recreate" breakpoint_ops method for | |
10436 | masked hardware watchpoints. */ | |
10437 | ||
10438 | static void | |
10439 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10440 | { | |
3a5c3e22 | 10441 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10442 | char tmp[40]; |
10443 | ||
10444 | switch (b->type) | |
10445 | { | |
10446 | case bp_hardware_watchpoint: | |
10447 | fprintf_unfiltered (fp, "watch"); | |
10448 | break; | |
10449 | case bp_read_watchpoint: | |
10450 | fprintf_unfiltered (fp, "rwatch"); | |
10451 | break; | |
10452 | case bp_access_watchpoint: | |
10453 | fprintf_unfiltered (fp, "awatch"); | |
10454 | break; | |
10455 | default: | |
10456 | internal_error (__FILE__, __LINE__, | |
10457 | _("Invalid hardware watchpoint type.")); | |
10458 | } | |
10459 | ||
3a5c3e22 PA |
10460 | sprintf_vma (tmp, w->hw_wp_mask); |
10461 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10462 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10463 | } |
10464 | ||
10465 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10466 | ||
2060206e | 10467 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10468 | |
10469 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10470 | ||
10471 | static int | |
10472 | is_masked_watchpoint (const struct breakpoint *b) | |
10473 | { | |
10474 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10475 | } | |
10476 | ||
53a5351d JM |
10477 | /* accessflag: hw_write: watch write, |
10478 | hw_read: watch read, | |
10479 | hw_access: watch access (read or write) */ | |
c906108c | 10480 | static void |
bbc13ae3 | 10481 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10482 | int just_location, int internal) |
c906108c | 10483 | { |
c1fc2657 | 10484 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10485 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10486 | struct value *result; |
bb9d5f81 | 10487 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10488 | const char *exp_start = NULL; |
10489 | const char *exp_end = NULL; | |
10490 | const char *tok, *end_tok; | |
9c06b0b4 | 10491 | int toklen = -1; |
bbc13ae3 KS |
10492 | const char *cond_start = NULL; |
10493 | const char *cond_end = NULL; | |
c906108c | 10494 | enum bptype bp_type; |
37e4754d | 10495 | int thread = -1; |
0cf6dd15 | 10496 | int pc = 0; |
9c06b0b4 TJB |
10497 | /* Flag to indicate whether we are going to use masks for |
10498 | the hardware watchpoint. */ | |
10499 | int use_mask = 0; | |
10500 | CORE_ADDR mask = 0; | |
c906108c | 10501 | |
37e4754d LM |
10502 | /* Make sure that we actually have parameters to parse. */ |
10503 | if (arg != NULL && arg[0] != '\0') | |
10504 | { | |
bbc13ae3 KS |
10505 | const char *value_start; |
10506 | ||
10507 | exp_end = arg + strlen (arg); | |
37e4754d | 10508 | |
9c06b0b4 TJB |
10509 | /* Look for "parameter value" pairs at the end |
10510 | of the arguments string. */ | |
bbc13ae3 | 10511 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10512 | { |
10513 | /* Skip whitespace at the end of the argument list. */ | |
10514 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10515 | tok--; | |
10516 | ||
10517 | /* Find the beginning of the last token. | |
10518 | This is the value of the parameter. */ | |
10519 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10520 | tok--; | |
10521 | value_start = tok + 1; | |
10522 | ||
10523 | /* Skip whitespace. */ | |
10524 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10525 | tok--; | |
10526 | ||
10527 | end_tok = tok; | |
10528 | ||
10529 | /* Find the beginning of the second to last token. | |
10530 | This is the parameter itself. */ | |
10531 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10532 | tok--; | |
10533 | tok++; | |
10534 | toklen = end_tok - tok + 1; | |
10535 | ||
61012eef | 10536 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10537 | { |
5d5658a1 | 10538 | struct thread_info *thr; |
9c06b0b4 TJB |
10539 | /* At this point we've found a "thread" token, which means |
10540 | the user is trying to set a watchpoint that triggers | |
10541 | only in a specific thread. */ | |
5d5658a1 | 10542 | const char *endp; |
37e4754d | 10543 | |
9c06b0b4 TJB |
10544 | if (thread != -1) |
10545 | error(_("You can specify only one thread.")); | |
37e4754d | 10546 | |
9c06b0b4 | 10547 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10548 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10549 | |
5d5658a1 | 10550 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10551 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10552 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10553 | |
5d5658a1 | 10554 | thread = thr->global_num; |
9c06b0b4 | 10555 | } |
61012eef | 10556 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10557 | { |
10558 | /* We've found a "mask" token, which means the user wants to | |
10559 | create a hardware watchpoint that is going to have the mask | |
10560 | facility. */ | |
10561 | struct value *mask_value, *mark; | |
37e4754d | 10562 | |
9c06b0b4 TJB |
10563 | if (use_mask) |
10564 | error(_("You can specify only one mask.")); | |
37e4754d | 10565 | |
9c06b0b4 | 10566 | use_mask = just_location = 1; |
37e4754d | 10567 | |
9c06b0b4 TJB |
10568 | mark = value_mark (); |
10569 | mask_value = parse_to_comma_and_eval (&value_start); | |
10570 | mask = value_as_address (mask_value); | |
10571 | value_free_to_mark (mark); | |
10572 | } | |
10573 | else | |
10574 | /* We didn't recognize what we found. We should stop here. */ | |
10575 | break; | |
37e4754d | 10576 | |
9c06b0b4 TJB |
10577 | /* Truncate the string and get rid of the "parameter value" pair before |
10578 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10579 | exp_end = tok; |
9c06b0b4 | 10580 | } |
37e4754d | 10581 | } |
bbc13ae3 KS |
10582 | else |
10583 | exp_end = arg; | |
37e4754d | 10584 | |
bbc13ae3 KS |
10585 | /* Parse the rest of the arguments. From here on out, everything |
10586 | is in terms of a newly allocated string instead of the original | |
10587 | ARG. */ | |
81b1e71c TT |
10588 | std::string expression (arg, exp_end - arg); |
10589 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10590 | innermost_block_tracker tracker; |
10591 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10592 | exp_end = arg; |
fa8a61dc TT |
10593 | /* Remove trailing whitespace from the expression before saving it. |
10594 | This makes the eventual display of the expression string a bit | |
10595 | prettier. */ | |
10596 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10597 | --exp_end; | |
10598 | ||
65d79d4b | 10599 | /* Checking if the expression is not constant. */ |
4d01a485 | 10600 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10601 | { |
10602 | int len; | |
10603 | ||
10604 | len = exp_end - exp_start; | |
10605 | while (len > 0 && isspace (exp_start[len - 1])) | |
10606 | len--; | |
10607 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10608 | } | |
10609 | ||
699bd4cf | 10610 | exp_valid_block = tracker.block (); |
b926417a | 10611 | struct value *mark = value_mark (); |
850645cf TT |
10612 | struct value *val_as_value = nullptr; |
10613 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10614 | just_location); | |
06a64a0b | 10615 | |
850645cf | 10616 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10617 | { |
850645cf TT |
10618 | saved_bitpos = value_bitpos (val_as_value); |
10619 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10620 | } |
10621 | ||
850645cf | 10622 | value_ref_ptr val; |
06a64a0b TT |
10623 | if (just_location) |
10624 | { | |
9c06b0b4 TJB |
10625 | int ret; |
10626 | ||
06a64a0b | 10627 | exp_valid_block = NULL; |
850645cf | 10628 | val = release_value (value_addr (result)); |
06a64a0b | 10629 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10630 | |
10631 | if (use_mask) | |
10632 | { | |
850645cf | 10633 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10634 | mask); |
10635 | if (ret == -1) | |
10636 | error (_("This target does not support masked watchpoints.")); | |
10637 | else if (ret == -2) | |
10638 | error (_("Invalid mask or memory region.")); | |
10639 | } | |
06a64a0b | 10640 | } |
850645cf TT |
10641 | else if (val_as_value != NULL) |
10642 | val = release_value (val_as_value); | |
c906108c | 10643 | |
f1735a53 TT |
10644 | tok = skip_spaces (arg); |
10645 | end_tok = skip_to_space (tok); | |
c906108c SS |
10646 | |
10647 | toklen = end_tok - tok; | |
10648 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10649 | { | |
10650 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10651 | innermost_block_tracker if_tracker; |
10652 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10653 | |
10654 | /* The watchpoint expression may not be local, but the condition | |
10655 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10656 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10657 | |
c906108c SS |
10658 | cond_end = tok; |
10659 | } | |
10660 | if (*tok) | |
8a3fe4f8 | 10661 | error (_("Junk at end of command.")); |
c906108c | 10662 | |
441d7c93 PA |
10663 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10664 | ||
10665 | /* Save this because create_internal_breakpoint below invalidates | |
10666 | 'wp_frame'. */ | |
10667 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10668 | |
10669 | /* If the expression is "local", then set up a "watchpoint scope" | |
10670 | breakpoint at the point where we've left the scope of the watchpoint | |
10671 | expression. Create the scope breakpoint before the watchpoint, so | |
10672 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10673 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10674 | { |
441d7c93 PA |
10675 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10676 | ||
10677 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10678 | { |
441d7c93 PA |
10679 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10680 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10681 | ||
edb3359d | 10682 | scope_breakpoint |
441d7c93 | 10683 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10684 | bp_watchpoint_scope, |
10685 | &momentary_breakpoint_ops); | |
d983da9c | 10686 | |
441d7c93 PA |
10687 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10688 | wp_frame = NULL; | |
10689 | ||
edb3359d | 10690 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10691 | |
edb3359d DJ |
10692 | /* Automatically delete the breakpoint when it hits. */ |
10693 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10694 | |
edb3359d | 10695 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10696 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10697 | |
edb3359d | 10698 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10699 | scope_breakpoint->loc->gdbarch = caller_arch; |
10700 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10701 | scope_breakpoint->loc->address |
a6d9a66e UW |
10702 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10703 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10704 | scope_breakpoint->type); |
10705 | } | |
d983da9c DJ |
10706 | } |
10707 | ||
e8369a73 AB |
10708 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10709 | watchpoints here even if hardware watchpoints are turned off, a call | |
10710 | to update_watchpoint later in this function will cause the type to | |
10711 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10712 | ||
10713 | if (accessflag == hw_read) | |
10714 | bp_type = bp_read_watchpoint; | |
10715 | else if (accessflag == hw_access) | |
10716 | bp_type = bp_access_watchpoint; | |
10717 | else | |
10718 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10719 | |
b270e6f9 | 10720 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10721 | |
348d480f | 10722 | if (use_mask) |
b270e6f9 | 10723 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10724 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10725 | else |
b270e6f9 | 10726 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10727 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10728 | w->thread = thread; |
10729 | w->disposition = disp_donttouch; | |
10730 | w->pspace = current_program_space; | |
b22e99fd | 10731 | w->exp = std::move (exp); |
3a5c3e22 PA |
10732 | w->exp_valid_block = exp_valid_block; |
10733 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10734 | if (just_location) |
10735 | { | |
850645cf TT |
10736 | struct type *t = value_type (val.get ()); |
10737 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10738 | |
43cc5389 TT |
10739 | w->exp_string_reparse |
10740 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10741 | |
3a5c3e22 | 10742 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10743 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10744 | } |
10745 | else | |
3a5c3e22 | 10746 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10747 | |
10748 | if (use_mask) | |
10749 | { | |
3a5c3e22 | 10750 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10751 | } |
10752 | else | |
10753 | { | |
3a5c3e22 | 10754 | w->val = val; |
bb9d5f81 PP |
10755 | w->val_bitpos = saved_bitpos; |
10756 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10757 | w->val_valid = 1; |
9c06b0b4 | 10758 | } |
77b06cd7 | 10759 | |
c906108c | 10760 | if (cond_start) |
c1fc2657 | 10761 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10762 | else |
c1fc2657 | 10763 | w->cond_string = 0; |
c5aa993b | 10764 | |
441d7c93 | 10765 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10766 | { |
441d7c93 | 10767 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10768 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10769 | } |
c906108c | 10770 | else |
f6bc2008 | 10771 | { |
3a5c3e22 PA |
10772 | w->watchpoint_frame = null_frame_id; |
10773 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10774 | } |
c906108c | 10775 | |
d983da9c | 10776 | if (scope_breakpoint != NULL) |
c906108c | 10777 | { |
d983da9c DJ |
10778 | /* The scope breakpoint is related to the watchpoint. We will |
10779 | need to act on them together. */ | |
c1fc2657 | 10780 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10781 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10782 | } |
d983da9c | 10783 | |
06a64a0b TT |
10784 | if (!just_location) |
10785 | value_free_to_mark (mark); | |
2d134ed3 | 10786 | |
b270e6f9 TT |
10787 | /* Finally update the new watchpoint. This creates the locations |
10788 | that should be inserted. */ | |
10789 | update_watchpoint (w.get (), 1); | |
a9634178 | 10790 | |
b270e6f9 | 10791 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10792 | } |
10793 | ||
e09342b5 | 10794 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10795 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10796 | |
c906108c | 10797 | static int |
a6535de1 | 10798 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10799 | { |
10800 | int found_memory_cnt = 0; | |
10801 | ||
10802 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10803 | if (!can_use_hw_watchpoints) |
c906108c | 10804 | return 0; |
c5aa993b | 10805 | |
a6535de1 TT |
10806 | gdb_assert (!vals.empty ()); |
10807 | struct value *head = vals[0].get (); | |
10808 | ||
5c44784c JM |
10809 | /* Make sure that the value of the expression depends only upon |
10810 | memory contents, and values computed from them within GDB. If we | |
10811 | find any register references or function calls, we can't use a | |
10812 | hardware watchpoint. | |
10813 | ||
10814 | The idea here is that evaluating an expression generates a series | |
10815 | of values, one holding the value of every subexpression. (The | |
10816 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10817 | a*b+c.) GDB's values hold almost enough information to establish | |
10818 | the criteria given above --- they identify memory lvalues, | |
10819 | register lvalues, computed values, etcetera. So we can evaluate | |
10820 | the expression, and then scan the chain of values that leaves | |
10821 | behind to decide whether we can detect any possible change to the | |
10822 | expression's final value using only hardware watchpoints. | |
10823 | ||
10824 | However, I don't think that the values returned by inferior | |
10825 | function calls are special in any way. So this function may not | |
10826 | notice that an expression involving an inferior function call | |
10827 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10828 | for (const value_ref_ptr &iter : vals) |
c906108c | 10829 | { |
a6535de1 TT |
10830 | struct value *v = iter.get (); |
10831 | ||
5c44784c | 10832 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10833 | { |
8464be76 DJ |
10834 | if (v != head && value_lazy (v)) |
10835 | /* A lazy memory lvalue in the chain is one that GDB never | |
10836 | needed to fetch; we either just used its address (e.g., | |
10837 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10838 | in `a,b'). This doesn't apply to HEAD; if that is | |
10839 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10840 | ; |
53a5351d | 10841 | else |
5c44784c JM |
10842 | { |
10843 | /* Ahh, memory we actually used! Check if we can cover | |
10844 | it with hardware watchpoints. */ | |
df407dfe | 10845 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10846 | |
10847 | /* We only watch structs and arrays if user asked for it | |
10848 | explicitly, never if they just happen to appear in a | |
10849 | middle of some value chain. */ | |
10850 | if (v == head | |
10851 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10852 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10853 | { | |
42ae5230 | 10854 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10855 | int len; |
10856 | int num_regs; | |
10857 | ||
a9634178 | 10858 | len = (target_exact_watchpoints |
e09342b5 TJB |
10859 | && is_scalar_type_recursive (vtype))? |
10860 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10861 | |
e09342b5 TJB |
10862 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10863 | if (!num_regs) | |
2e70b7b9 MS |
10864 | return 0; |
10865 | else | |
e09342b5 | 10866 | found_memory_cnt += num_regs; |
2e70b7b9 | 10867 | } |
5c44784c | 10868 | } |
c5aa993b | 10869 | } |
5086187c AC |
10870 | else if (VALUE_LVAL (v) != not_lval |
10871 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10872 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10873 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10874 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10875 | } |
10876 | ||
10877 | /* The expression itself looks suitable for using a hardware | |
10878 | watchpoint, but give the target machine a chance to reject it. */ | |
10879 | return found_memory_cnt; | |
10880 | } | |
10881 | ||
8b93c638 | 10882 | void |
f2fc3015 | 10883 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10884 | { |
84f4c1fe | 10885 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10886 | } |
10887 | ||
06a64a0b TT |
10888 | /* A helper function that looks for the "-location" argument and then |
10889 | calls watch_command_1. */ | |
10890 | ||
10891 | static void | |
0b39b52e | 10892 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10893 | { |
10894 | int just_location = 0; | |
10895 | ||
10896 | if (arg | |
10897 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10898 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
cbba3ecd | 10899 | just_location = 1; |
06a64a0b | 10900 | |
84f4c1fe | 10901 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10902 | } |
8926118c | 10903 | |
c5aa993b | 10904 | static void |
0b39b52e | 10905 | watch_command (const char *arg, int from_tty) |
c906108c | 10906 | { |
06a64a0b | 10907 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10908 | } |
10909 | ||
8b93c638 | 10910 | void |
f2fc3015 | 10911 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10912 | { |
84f4c1fe | 10913 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10914 | } |
8926118c | 10915 | |
c5aa993b | 10916 | static void |
0b39b52e | 10917 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10918 | { |
06a64a0b | 10919 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10920 | } |
10921 | ||
8b93c638 | 10922 | void |
f2fc3015 | 10923 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10924 | { |
84f4c1fe | 10925 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10926 | } |
8926118c | 10927 | |
c5aa993b | 10928 | static void |
0b39b52e | 10929 | awatch_command (const char *arg, int from_tty) |
c906108c | 10930 | { |
06a64a0b | 10931 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10932 | } |
c906108c | 10933 | \f |
c5aa993b | 10934 | |
cfc31633 PA |
10935 | /* Data for the FSM that manages the until(location)/advance commands |
10936 | in infcmd.c. Here because it uses the mechanisms of | |
10937 | breakpoints. */ | |
c906108c | 10938 | |
46e3ed7f | 10939 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10940 | { |
46e3ed7f | 10941 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10942 | int thread; |
10943 | ||
10944 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10945 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10946 | |
10947 | /* Breakpoint set at the return address in the caller frame. May be | |
10948 | NULL. */ | |
46e3ed7f | 10949 | breakpoint_up caller_breakpoint; |
cfc31633 | 10950 | |
46e3ed7f TT |
10951 | until_break_fsm (struct interp *cmd_interp, int thread, |
10952 | breakpoint_up &&location_breakpoint, | |
10953 | breakpoint_up &&caller_breakpoint) | |
10954 | : thread_fsm (cmd_interp), | |
10955 | thread (thread), | |
10956 | location_breakpoint (std::move (location_breakpoint)), | |
10957 | caller_breakpoint (std::move (caller_breakpoint)) | |
10958 | { | |
10959 | } | |
cfc31633 | 10960 | |
46e3ed7f TT |
10961 | void clean_up (struct thread_info *thread) override; |
10962 | bool should_stop (struct thread_info *thread) override; | |
10963 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10964 | }; |
10965 | ||
cfc31633 PA |
10966 | /* Implementation of the 'should_stop' FSM method for the |
10967 | until(location)/advance commands. */ | |
10968 | ||
46e3ed7f TT |
10969 | bool |
10970 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10971 | { |
cfc31633 | 10972 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10973 | location_breakpoint.get ()) != NULL |
10974 | || (caller_breakpoint != NULL | |
cfc31633 | 10975 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10976 | caller_breakpoint.get ()) != NULL)) |
10977 | set_finished (); | |
cfc31633 | 10978 | |
46e3ed7f | 10979 | return true; |
cfc31633 PA |
10980 | } |
10981 | ||
10982 | /* Implementation of the 'clean_up' FSM method for the | |
10983 | until(location)/advance commands. */ | |
10984 | ||
46e3ed7f TT |
10985 | void |
10986 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10987 | { |
cfc31633 | 10988 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10989 | location_breakpoint.reset (); |
10990 | caller_breakpoint.reset (); | |
10991 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
10992 | } |
10993 | ||
10994 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10995 | until(location)/advance commands. */ | |
10996 | ||
46e3ed7f TT |
10997 | enum async_reply_reason |
10998 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10999 | { |
11000 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11001 | } |
11002 | ||
c906108c | 11003 | void |
f2fc3015 | 11004 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11005 | { |
8556afb4 PA |
11006 | struct frame_info *frame; |
11007 | struct gdbarch *frame_gdbarch; | |
11008 | struct frame_id stack_frame_id; | |
11009 | struct frame_id caller_frame_id; | |
186c406b TT |
11010 | int thread; |
11011 | struct thread_info *tp; | |
c906108c | 11012 | |
70509625 | 11013 | clear_proceed_status (0); |
c906108c SS |
11014 | |
11015 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11016 | this function. */ |
c5aa993b | 11017 | |
ffc2605c | 11018 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11019 | |
6c5b2ebe PA |
11020 | std::vector<symtab_and_line> sals |
11021 | = (last_displayed_sal_is_valid () | |
11022 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11023 | get_last_displayed_symtab (), | |
11024 | get_last_displayed_line ()) | |
11025 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11026 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11027 | |
6c5b2ebe | 11028 | if (sals.size () != 1) |
8a3fe4f8 | 11029 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11030 | |
6c5b2ebe | 11031 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11032 | |
c906108c | 11033 | if (*arg) |
8a3fe4f8 | 11034 | error (_("Junk at end of arguments.")); |
c5aa993b | 11035 | |
c906108c | 11036 | resolve_sal_pc (&sal); |
c5aa993b | 11037 | |
186c406b | 11038 | tp = inferior_thread (); |
5d5658a1 | 11039 | thread = tp->global_num; |
186c406b | 11040 | |
8556afb4 PA |
11041 | /* Note linespec handling above invalidates the frame chain. |
11042 | Installing a breakpoint also invalidates the frame chain (as it | |
11043 | may need to switch threads), so do any frame handling before | |
11044 | that. */ | |
11045 | ||
11046 | frame = get_selected_frame (NULL); | |
11047 | frame_gdbarch = get_frame_arch (frame); | |
11048 | stack_frame_id = get_stack_frame_id (frame); | |
11049 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11050 | |
ae66c1fc EZ |
11051 | /* Keep within the current frame, or in frames called by the current |
11052 | one. */ | |
edb3359d | 11053 | |
454dafbd | 11054 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11055 | |
11056 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11057 | ||
883bc8d1 | 11058 | if (frame_id_p (caller_frame_id)) |
c906108c | 11059 | { |
883bc8d1 | 11060 | struct symtab_and_line sal2; |
cfc31633 | 11061 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11062 | |
11063 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11064 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11065 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11066 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11067 | sal2, | |
11068 | caller_frame_id, | |
11069 | bp_until); | |
186c406b | 11070 | |
883bc8d1 | 11071 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11072 | lj_deleter.emplace (thread); |
c906108c | 11073 | } |
c5aa993b | 11074 | |
c70a6932 JK |
11075 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11076 | frame = NULL; | |
11077 | ||
454dafbd | 11078 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11079 | if (anywhere) |
11080 | /* If the user told us to continue until a specified location, | |
11081 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11082 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11083 | null_frame_id, bp_until); | |
883bc8d1 PA |
11084 | else |
11085 | /* Otherwise, specify the selected frame, because we want to stop | |
11086 | only at the very same frame. */ | |
cfc31633 PA |
11087 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11088 | stack_frame_id, bp_until); | |
883bc8d1 | 11089 | |
46e3ed7f TT |
11090 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11091 | std::move (location_breakpoint), | |
11092 | std::move (caller_breakpoint)); | |
f107f563 | 11093 | |
5419bdae TT |
11094 | if (lj_deleter) |
11095 | lj_deleter->release (); | |
f107f563 | 11096 | |
cfc31633 | 11097 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11098 | } |
ae66c1fc | 11099 | |
c906108c SS |
11100 | /* This function attempts to parse an optional "if <cond>" clause |
11101 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11102 | |
c906108c SS |
11103 | Else, it returns a pointer to the condition string. (It does not |
11104 | attempt to evaluate the string against a particular block.) And, | |
11105 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11106 | if clause in the arg string. */ |
53a5351d | 11107 | |
63160a43 PA |
11108 | const char * |
11109 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11110 | { |
63160a43 | 11111 | const char *cond_string; |
c5aa993b JM |
11112 | |
11113 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11114 | return NULL; |
c5aa993b | 11115 | |
4a64f543 | 11116 | /* Skip the "if" keyword. */ |
c906108c | 11117 | (*arg) += 2; |
c5aa993b | 11118 | |
c906108c | 11119 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11120 | condition string. */ |
f1735a53 | 11121 | *arg = skip_spaces (*arg); |
c906108c | 11122 | cond_string = *arg; |
c5aa993b | 11123 | |
4a64f543 MS |
11124 | /* Assume that the condition occupies the remainder of the arg |
11125 | string. */ | |
c906108c | 11126 | (*arg) += strlen (cond_string); |
c5aa993b | 11127 | |
c906108c SS |
11128 | return cond_string; |
11129 | } | |
c5aa993b | 11130 | |
c906108c SS |
11131 | /* Commands to deal with catching events, such as signals, exceptions, |
11132 | process start/exit, etc. */ | |
c5aa993b JM |
11133 | |
11134 | typedef enum | |
11135 | { | |
44feb3ce TT |
11136 | catch_fork_temporary, catch_vfork_temporary, |
11137 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11138 | } |
11139 | catch_fork_kind; | |
11140 | ||
c906108c | 11141 | static void |
eb4c3f4a | 11142 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11143 | struct cmd_list_element *command) |
c906108c | 11144 | { |
a6d9a66e | 11145 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11146 | const char *cond_string = NULL; |
44feb3ce TT |
11147 | catch_fork_kind fork_kind; |
11148 | int tempflag; | |
11149 | ||
11150 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11151 | tempflag = (fork_kind == catch_fork_temporary | |
11152 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11153 | |
44feb3ce TT |
11154 | if (!arg) |
11155 | arg = ""; | |
f1735a53 | 11156 | arg = skip_spaces (arg); |
c5aa993b | 11157 | |
c906108c | 11158 | /* The allowed syntax is: |
c5aa993b JM |
11159 | catch [v]fork |
11160 | catch [v]fork if <cond> | |
11161 | ||
4a64f543 | 11162 | First, check if there's an if clause. */ |
c906108c | 11163 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11164 | |
c906108c | 11165 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11166 | error (_("Junk at end of arguments.")); |
c5aa993b | 11167 | |
c906108c | 11168 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11169 | and enable reporting of such events. */ |
c5aa993b JM |
11170 | switch (fork_kind) |
11171 | { | |
44feb3ce TT |
11172 | case catch_fork_temporary: |
11173 | case catch_fork_permanent: | |
a6d9a66e | 11174 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11175 | &catch_fork_breakpoint_ops); |
c906108c | 11176 | break; |
44feb3ce TT |
11177 | case catch_vfork_temporary: |
11178 | case catch_vfork_permanent: | |
a6d9a66e | 11179 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11180 | &catch_vfork_breakpoint_ops); |
c906108c | 11181 | break; |
c5aa993b | 11182 | default: |
8a3fe4f8 | 11183 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11184 | break; |
c5aa993b | 11185 | } |
c906108c SS |
11186 | } |
11187 | ||
11188 | static void | |
eb4c3f4a | 11189 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11190 | struct cmd_list_element *command) |
c906108c | 11191 | { |
a6d9a66e | 11192 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11193 | int tempflag; |
63160a43 | 11194 | const char *cond_string = NULL; |
c906108c | 11195 | |
44feb3ce TT |
11196 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11197 | ||
11198 | if (!arg) | |
11199 | arg = ""; | |
f1735a53 | 11200 | arg = skip_spaces (arg); |
c906108c SS |
11201 | |
11202 | /* The allowed syntax is: | |
c5aa993b JM |
11203 | catch exec |
11204 | catch exec if <cond> | |
c906108c | 11205 | |
4a64f543 | 11206 | First, check if there's an if clause. */ |
c906108c SS |
11207 | cond_string = ep_parse_optional_if_clause (&arg); |
11208 | ||
11209 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11210 | error (_("Junk at end of arguments.")); |
c906108c | 11211 | |
b270e6f9 TT |
11212 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11213 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11214 | &catch_exec_breakpoint_ops); |
11215 | c->exec_pathname = NULL; | |
11216 | ||
b270e6f9 | 11217 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11218 | } |
c5aa993b | 11219 | |
9ac4176b | 11220 | void |
28010a5d PA |
11221 | init_ada_exception_breakpoint (struct breakpoint *b, |
11222 | struct gdbarch *gdbarch, | |
11223 | struct symtab_and_line sal, | |
f2fc3015 | 11224 | const char *addr_string, |
c0a91b2b | 11225 | const struct breakpoint_ops *ops, |
28010a5d | 11226 | int tempflag, |
349774ef | 11227 | int enabled, |
28010a5d | 11228 | int from_tty) |
f7f9143b | 11229 | { |
f7f9143b JB |
11230 | if (from_tty) |
11231 | { | |
5af949e3 UW |
11232 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11233 | if (!loc_gdbarch) | |
11234 | loc_gdbarch = gdbarch; | |
11235 | ||
6c95b8df PA |
11236 | describe_other_breakpoints (loc_gdbarch, |
11237 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11238 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11239 | version for exception catchpoints, because two catchpoints | |
11240 | used for different exception names will use the same address. | |
11241 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11242 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11243 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11244 | the user what type of catchpoint it is. The above is good |
11245 | enough for now, though. */ | |
11246 | } | |
11247 | ||
28010a5d | 11248 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11249 | |
349774ef | 11250 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11251 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11252 | b->location = string_to_event_location (&addr_string, |
11253 | language_def (language_ada)); | |
f7f9143b | 11254 | b->language = language_ada; |
f7f9143b JB |
11255 | } |
11256 | ||
c906108c | 11257 | static void |
981a3fb3 | 11258 | catch_command (const char *arg, int from_tty) |
c906108c | 11259 | { |
44feb3ce | 11260 | error (_("Catch requires an event name.")); |
c906108c SS |
11261 | } |
11262 | \f | |
11263 | ||
11264 | static void | |
981a3fb3 | 11265 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11266 | { |
44feb3ce | 11267 | error (_("Catch requires an event name.")); |
c906108c SS |
11268 | } |
11269 | ||
81b1e71c | 11270 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11271 | |
11272 | static int | |
81b1e71c | 11273 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11274 | { |
81b1e71c TT |
11275 | uintptr_t ua = (uintptr_t) a; |
11276 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11277 | |
81b1e71c | 11278 | if (a->number < b->number) |
8a2c437b | 11279 | return -1; |
81b1e71c | 11280 | else if (a->number > b->number) |
8a2c437b TT |
11281 | return 1; |
11282 | ||
11283 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11284 | the number 0. */ | |
11285 | if (ua < ub) | |
11286 | return -1; | |
94b0e70d | 11287 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11288 | } |
11289 | ||
80f8a6eb | 11290 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11291 | |
11292 | static void | |
0b39b52e | 11293 | clear_command (const char *arg, int from_tty) |
c906108c | 11294 | { |
81b1e71c | 11295 | struct breakpoint *b; |
c906108c | 11296 | int default_match; |
c906108c | 11297 | |
6c5b2ebe PA |
11298 | std::vector<symtab_and_line> decoded_sals; |
11299 | symtab_and_line last_sal; | |
11300 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11301 | if (arg) |
11302 | { | |
6c5b2ebe PA |
11303 | decoded_sals |
11304 | = decode_line_with_current_source (arg, | |
11305 | (DECODE_LINE_FUNFIRSTLINE | |
11306 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11307 | default_match = 0; |
6c5b2ebe | 11308 | sals = decoded_sals; |
c906108c SS |
11309 | } |
11310 | else | |
11311 | { | |
1bfeeb0f JL |
11312 | /* Set sal's line, symtab, pc, and pspace to the values |
11313 | corresponding to the last call to print_frame_info. If the | |
11314 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11315 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11316 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11317 | error (_("No source file specified.")); |
c906108c | 11318 | |
c906108c | 11319 | default_match = 1; |
6c5b2ebe | 11320 | sals = last_sal; |
c906108c SS |
11321 | } |
11322 | ||
4a64f543 MS |
11323 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11324 | seems, because all existing breakpoints typically have both | |
11325 | file/line and pc set. So, if clear is given file/line, we can | |
11326 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11327 | |
11328 | We only support clearing given the address explicitly | |
11329 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11330 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11331 | due to optimization, all in one block. |
4a64f543 MS |
11332 | |
11333 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11334 | PC corresponding to the same file:line, the breakpoint won't |
11335 | be cleared. We probably can still clear the breakpoint, but | |
11336 | since the other PC value is never presented to user, user | |
11337 | can only find it by guessing, and it does not seem important | |
11338 | to support that. */ | |
11339 | ||
4a64f543 MS |
11340 | /* For each line spec given, delete bps which correspond to it. Do |
11341 | it in two passes, solely to preserve the current behavior that | |
11342 | from_tty is forced true if we delete more than one | |
11343 | breakpoint. */ | |
c906108c | 11344 | |
81b1e71c | 11345 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11346 | for (const auto &sal : sals) |
c906108c | 11347 | { |
05cba821 JK |
11348 | const char *sal_fullname; |
11349 | ||
c906108c | 11350 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11351 | If line given (pc == 0), clear all bpts on specified line. |
11352 | If defaulting, clear all bpts on default line | |
c906108c | 11353 | or at default pc. |
c5aa993b JM |
11354 | |
11355 | defaulting sal.pc != 0 tests to do | |
11356 | ||
11357 | 0 1 pc | |
11358 | 1 1 pc _and_ line | |
11359 | 0 0 line | |
11360 | 1 0 <can't happen> */ | |
c906108c | 11361 | |
05cba821 JK |
11362 | sal_fullname = (sal.symtab == NULL |
11363 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11364 | |
4a64f543 | 11365 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11366 | ALL_BREAKPOINTS (b) |
c5aa993b | 11367 | { |
0d381245 | 11368 | int match = 0; |
4a64f543 | 11369 | /* Are we going to delete b? */ |
cc60f2e3 | 11370 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11371 | { |
11372 | struct bp_location *loc = b->loc; | |
11373 | for (; loc; loc = loc->next) | |
11374 | { | |
f8eba3c6 TT |
11375 | /* If the user specified file:line, don't allow a PC |
11376 | match. This matches historical gdb behavior. */ | |
11377 | int pc_match = (!sal.explicit_line | |
11378 | && sal.pc | |
11379 | && (loc->pspace == sal.pspace) | |
11380 | && (loc->address == sal.pc) | |
11381 | && (!section_is_overlay (loc->section) | |
11382 | || loc->section == sal.section)); | |
4aac40c8 TT |
11383 | int line_match = 0; |
11384 | ||
11385 | if ((default_match || sal.explicit_line) | |
2f202fde | 11386 | && loc->symtab != NULL |
05cba821 | 11387 | && sal_fullname != NULL |
4aac40c8 | 11388 | && sal.pspace == loc->pspace |
05cba821 JK |
11389 | && loc->line_number == sal.line |
11390 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11391 | sal_fullname) == 0) | |
11392 | line_match = 1; | |
4aac40c8 | 11393 | |
0d381245 VP |
11394 | if (pc_match || line_match) |
11395 | { | |
11396 | match = 1; | |
11397 | break; | |
11398 | } | |
11399 | } | |
11400 | } | |
11401 | ||
11402 | if (match) | |
81b1e71c | 11403 | found.push_back (b); |
c906108c | 11404 | } |
80f8a6eb | 11405 | } |
8a2c437b | 11406 | |
80f8a6eb | 11407 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11408 | if (found.empty ()) |
80f8a6eb MS |
11409 | { |
11410 | if (arg) | |
8a3fe4f8 | 11411 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11412 | else |
8a3fe4f8 | 11413 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11414 | } |
c906108c | 11415 | |
8a2c437b | 11416 | /* Remove duplicates from the vec. */ |
81b1e71c | 11417 | std::sort (found.begin (), found.end (), |
b926417a | 11418 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11419 | { |
b926417a | 11420 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11421 | }); |
11422 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11423 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11424 | { |
b926417a | 11425 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11426 | }), |
11427 | found.end ()); | |
8a2c437b | 11428 | |
81b1e71c | 11429 | if (found.size () > 1) |
4a64f543 | 11430 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11431 | if (from_tty) |
a3f17187 | 11432 | { |
81b1e71c | 11433 | if (found.size () == 1) |
a3f17187 AC |
11434 | printf_unfiltered (_("Deleted breakpoint ")); |
11435 | else | |
11436 | printf_unfiltered (_("Deleted breakpoints ")); | |
11437 | } | |
d6e956e5 | 11438 | |
81b1e71c | 11439 | for (breakpoint *iter : found) |
80f8a6eb | 11440 | { |
c5aa993b | 11441 | if (from_tty) |
81b1e71c TT |
11442 | printf_unfiltered ("%d ", iter->number); |
11443 | delete_breakpoint (iter); | |
c906108c | 11444 | } |
80f8a6eb MS |
11445 | if (from_tty) |
11446 | putchar_unfiltered ('\n'); | |
c906108c SS |
11447 | } |
11448 | \f | |
11449 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11450 | all breakpoints that are marked for deletion, whether hit or not. | |
11451 | This is called after any breakpoint is hit, or after errors. */ | |
11452 | ||
11453 | void | |
fba45db2 | 11454 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11455 | { |
35df4500 | 11456 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11457 | |
11458 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11459 | if (bs->breakpoint_at |
11460 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11461 | && bs->stop) |
f431efe5 | 11462 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11463 | |
35df4500 | 11464 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11465 | { |
b5de0fa7 | 11466 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11467 | delete_breakpoint (b); |
11468 | } | |
c906108c SS |
11469 | } |
11470 | ||
4a64f543 MS |
11471 | /* A comparison function for bp_location AP and BP being interfaced to |
11472 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11473 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11474 | secondarily by ordering first permanent elements and |
4a64f543 | 11475 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11476 | qsort being an unstable algorithm. */ |
876fa593 JK |
11477 | |
11478 | static int | |
f5336ca5 | 11479 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11480 | { |
9a3c8263 SM |
11481 | const struct bp_location *a = *(const struct bp_location **) ap; |
11482 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11483 | |
11484 | if (a->address != b->address) | |
11485 | return (a->address > b->address) - (a->address < b->address); | |
11486 | ||
dea2aa5f LM |
11487 | /* Sort locations at the same address by their pspace number, keeping |
11488 | locations of the same inferior (in a multi-inferior environment) | |
11489 | grouped. */ | |
11490 | ||
11491 | if (a->pspace->num != b->pspace->num) | |
11492 | return ((a->pspace->num > b->pspace->num) | |
11493 | - (a->pspace->num < b->pspace->num)); | |
11494 | ||
876fa593 | 11495 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11496 | if (a->permanent != b->permanent) |
11497 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11498 | |
c56a97f9 JK |
11499 | /* Make the internal GDB representation stable across GDB runs |
11500 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11501 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11502 | |
11503 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11504 | return ((a->owner->number > b->owner->number) |
11505 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11506 | |
11507 | return (a > b) - (a < b); | |
11508 | } | |
11509 | ||
f5336ca5 PA |
11510 | /* Set bp_locations_placed_address_before_address_max and |
11511 | bp_locations_shadow_len_after_address_max according to the current | |
11512 | content of the bp_locations array. */ | |
f7545552 TT |
11513 | |
11514 | static void | |
f5336ca5 | 11515 | bp_locations_target_extensions_update (void) |
f7545552 | 11516 | { |
876fa593 JK |
11517 | struct bp_location *bl, **blp_tmp; |
11518 | ||
f5336ca5 PA |
11519 | bp_locations_placed_address_before_address_max = 0; |
11520 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11521 | |
11522 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11523 | { | |
11524 | CORE_ADDR start, end, addr; | |
11525 | ||
11526 | if (!bp_location_has_shadow (bl)) | |
11527 | continue; | |
11528 | ||
11529 | start = bl->target_info.placed_address; | |
11530 | end = start + bl->target_info.shadow_len; | |
11531 | ||
11532 | gdb_assert (bl->address >= start); | |
11533 | addr = bl->address - start; | |
f5336ca5 PA |
11534 | if (addr > bp_locations_placed_address_before_address_max) |
11535 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11536 | |
11537 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11538 | ||
11539 | gdb_assert (bl->address < end); | |
11540 | addr = end - bl->address; | |
f5336ca5 PA |
11541 | if (addr > bp_locations_shadow_len_after_address_max) |
11542 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11543 | } |
f7545552 TT |
11544 | } |
11545 | ||
1e4d1764 YQ |
11546 | /* Download tracepoint locations if they haven't been. */ |
11547 | ||
11548 | static void | |
11549 | download_tracepoint_locations (void) | |
11550 | { | |
7ed2c994 | 11551 | struct breakpoint *b; |
dd2e65cc | 11552 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11553 | |
5ed8105e | 11554 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11555 | |
7ed2c994 | 11556 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11557 | { |
7ed2c994 | 11558 | struct bp_location *bl; |
1e4d1764 | 11559 | struct tracepoint *t; |
f2a8bc8a | 11560 | int bp_location_downloaded = 0; |
1e4d1764 | 11561 | |
7ed2c994 | 11562 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11563 | ? !may_insert_fast_tracepoints |
11564 | : !may_insert_tracepoints)) | |
11565 | continue; | |
11566 | ||
dd2e65cc YQ |
11567 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11568 | { | |
11569 | if (target_can_download_tracepoint ()) | |
11570 | can_download_tracepoint = TRIBOOL_TRUE; | |
11571 | else | |
11572 | can_download_tracepoint = TRIBOOL_FALSE; | |
11573 | } | |
11574 | ||
11575 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11576 | break; | |
11577 | ||
7ed2c994 YQ |
11578 | for (bl = b->loc; bl; bl = bl->next) |
11579 | { | |
11580 | /* In tracepoint, locations are _never_ duplicated, so | |
11581 | should_be_inserted is equivalent to | |
11582 | unduplicated_should_be_inserted. */ | |
11583 | if (!should_be_inserted (bl) || bl->inserted) | |
11584 | continue; | |
1e4d1764 | 11585 | |
7ed2c994 | 11586 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11587 | |
7ed2c994 | 11588 | target_download_tracepoint (bl); |
1e4d1764 | 11589 | |
7ed2c994 | 11590 | bl->inserted = 1; |
f2a8bc8a | 11591 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11592 | } |
11593 | t = (struct tracepoint *) b; | |
11594 | t->number_on_target = b->number; | |
f2a8bc8a | 11595 | if (bp_location_downloaded) |
76727919 | 11596 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11597 | } |
1e4d1764 YQ |
11598 | } |
11599 | ||
934709f0 PW |
11600 | /* Swap the insertion/duplication state between two locations. */ |
11601 | ||
11602 | static void | |
11603 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11604 | { | |
11605 | const int left_inserted = left->inserted; | |
11606 | const int left_duplicate = left->duplicate; | |
b775012e | 11607 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11608 | const struct bp_target_info left_target_info = left->target_info; |
11609 | ||
1e4d1764 YQ |
11610 | /* Locations of tracepoints can never be duplicated. */ |
11611 | if (is_tracepoint (left->owner)) | |
11612 | gdb_assert (!left->duplicate); | |
11613 | if (is_tracepoint (right->owner)) | |
11614 | gdb_assert (!right->duplicate); | |
11615 | ||
934709f0 PW |
11616 | left->inserted = right->inserted; |
11617 | left->duplicate = right->duplicate; | |
b775012e | 11618 | left->needs_update = right->needs_update; |
934709f0 PW |
11619 | left->target_info = right->target_info; |
11620 | right->inserted = left_inserted; | |
11621 | right->duplicate = left_duplicate; | |
b775012e | 11622 | right->needs_update = left_needs_update; |
934709f0 PW |
11623 | right->target_info = left_target_info; |
11624 | } | |
11625 | ||
b775012e LM |
11626 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11627 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11628 | conditions on the target's side. Such conditions need to be updated on | |
11629 | the target. */ | |
11630 | ||
11631 | static void | |
11632 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11633 | { | |
11634 | struct bp_location **locp = NULL, **loc2p; | |
11635 | struct bp_location *loc; | |
11636 | CORE_ADDR address = 0; | |
11637 | int pspace_num; | |
11638 | ||
11639 | address = bl->address; | |
11640 | pspace_num = bl->pspace->num; | |
11641 | ||
11642 | /* This is only meaningful if the target is | |
11643 | evaluating conditions and if the user has | |
11644 | opted for condition evaluation on the target's | |
11645 | side. */ | |
11646 | if (gdb_evaluates_breakpoint_condition_p () | |
11647 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11648 | return; | |
11649 | ||
11650 | /* Flag all breakpoint locations with this address and | |
11651 | the same program space as the location | |
11652 | as "its condition has changed". We need to | |
11653 | update the conditions on the target's side. */ | |
11654 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11655 | { | |
11656 | loc = *loc2p; | |
11657 | ||
11658 | if (!is_breakpoint (loc->owner) | |
11659 | || pspace_num != loc->pspace->num) | |
11660 | continue; | |
11661 | ||
11662 | /* Flag the location appropriately. We use a different state to | |
11663 | let everyone know that we already updated the set of locations | |
11664 | with addr bl->address and program space bl->pspace. This is so | |
11665 | we don't have to keep calling these functions just to mark locations | |
11666 | that have already been marked. */ | |
11667 | loc->condition_changed = condition_updated; | |
11668 | ||
11669 | /* Free the agent expression bytecode as well. We will compute | |
11670 | it later on. */ | |
833177a4 | 11671 | loc->cond_bytecode.reset (); |
b775012e LM |
11672 | } |
11673 | } | |
44702360 PA |
11674 | /* Called whether new breakpoints are created, or existing breakpoints |
11675 | deleted, to update the global location list and recompute which | |
11676 | locations are duplicate of which. | |
b775012e | 11677 | |
04086b45 PA |
11678 | The INSERT_MODE flag determines whether locations may not, may, or |
11679 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11680 | info. */ | |
b60e7edf | 11681 | |
0d381245 | 11682 | static void |
44702360 | 11683 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11684 | { |
74960c60 | 11685 | struct breakpoint *b; |
876fa593 | 11686 | struct bp_location **locp, *loc; |
b775012e LM |
11687 | /* Last breakpoint location address that was marked for update. */ |
11688 | CORE_ADDR last_addr = 0; | |
11689 | /* Last breakpoint location program space that was marked for update. */ | |
11690 | int last_pspace_num = -1; | |
f7545552 | 11691 | |
2d134ed3 PA |
11692 | /* Used in the duplicates detection below. When iterating over all |
11693 | bp_locations, points to the first bp_location of a given address. | |
11694 | Breakpoints and watchpoints of different types are never | |
11695 | duplicates of each other. Keep one pointer for each type of | |
11696 | breakpoint/watchpoint, so we only need to loop over all locations | |
11697 | once. */ | |
11698 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11699 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11700 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11701 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11702 | |
f5336ca5 PA |
11703 | /* Saved former bp_locations array which we compare against the newly |
11704 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11705 | struct bp_location **old_locp; |
f5336ca5 | 11706 | unsigned old_locations_count; |
81b1e71c | 11707 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11708 | |
f5336ca5 PA |
11709 | old_locations_count = bp_locations_count; |
11710 | bp_locations = NULL; | |
11711 | bp_locations_count = 0; | |
0d381245 | 11712 | |
74960c60 | 11713 | ALL_BREAKPOINTS (b) |
876fa593 | 11714 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11715 | bp_locations_count++; |
876fa593 | 11716 | |
f5336ca5 PA |
11717 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11718 | locp = bp_locations; | |
876fa593 JK |
11719 | ALL_BREAKPOINTS (b) |
11720 | for (loc = b->loc; loc; loc = loc->next) | |
11721 | *locp++ = loc; | |
f5336ca5 PA |
11722 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11723 | bp_locations_compare); | |
876fa593 | 11724 | |
f5336ca5 | 11725 | bp_locations_target_extensions_update (); |
74960c60 | 11726 | |
4a64f543 MS |
11727 | /* Identify bp_location instances that are no longer present in the |
11728 | new list, and therefore should be freed. Note that it's not | |
11729 | necessary that those locations should be removed from inferior -- | |
11730 | if there's another location at the same address (previously | |
11731 | marked as duplicate), we don't need to remove/insert the | |
11732 | location. | |
876fa593 | 11733 | |
4a64f543 MS |
11734 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11735 | and former bp_location array state respectively. */ | |
876fa593 | 11736 | |
f5336ca5 | 11737 | locp = bp_locations; |
81b1e71c TT |
11738 | for (old_locp = old_locations.get (); |
11739 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11740 | old_locp++) |
74960c60 | 11741 | { |
876fa593 | 11742 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11743 | struct bp_location **loc2p; |
876fa593 | 11744 | |
e5dd4106 | 11745 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11746 | not, we have to free it. */ |
c7d46a38 | 11747 | int found_object = 0; |
20874c92 VP |
11748 | /* Tells if the location should remain inserted in the target. */ |
11749 | int keep_in_target = 0; | |
11750 | int removed = 0; | |
876fa593 | 11751 | |
4a64f543 MS |
11752 | /* Skip LOCP entries which will definitely never be needed. |
11753 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11754 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11755 | && (*locp)->address < old_loc->address) |
876fa593 | 11756 | locp++; |
c7d46a38 PA |
11757 | |
11758 | for (loc2p = locp; | |
f5336ca5 | 11759 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11760 | && (*loc2p)->address == old_loc->address); |
11761 | loc2p++) | |
11762 | { | |
b775012e LM |
11763 | /* Check if this is a new/duplicated location or a duplicated |
11764 | location that had its condition modified. If so, we want to send | |
11765 | its condition to the target if evaluation of conditions is taking | |
11766 | place there. */ | |
11767 | if ((*loc2p)->condition_changed == condition_modified | |
11768 | && (last_addr != old_loc->address | |
11769 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11770 | { |
b775012e LM |
11771 | force_breakpoint_reinsertion (*loc2p); |
11772 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11773 | } |
b775012e LM |
11774 | |
11775 | if (*loc2p == old_loc) | |
11776 | found_object = 1; | |
c7d46a38 | 11777 | } |
74960c60 | 11778 | |
b775012e LM |
11779 | /* We have already handled this address, update it so that we don't |
11780 | have to go through updates again. */ | |
11781 | last_addr = old_loc->address; | |
11782 | ||
11783 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11784 | if (!found_object) | |
11785 | force_breakpoint_reinsertion (old_loc); | |
11786 | ||
4a64f543 MS |
11787 | /* If this location is no longer present, and inserted, look if |
11788 | there's maybe a new location at the same address. If so, | |
11789 | mark that one inserted, and don't remove this one. This is | |
11790 | needed so that we don't have a time window where a breakpoint | |
11791 | at certain location is not inserted. */ | |
74960c60 | 11792 | |
876fa593 | 11793 | if (old_loc->inserted) |
0d381245 | 11794 | { |
4a64f543 MS |
11795 | /* If the location is inserted now, we might have to remove |
11796 | it. */ | |
74960c60 | 11797 | |
876fa593 | 11798 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11799 | { |
4a64f543 MS |
11800 | /* The location is still present in the location list, |
11801 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11802 | keep_in_target = 1; |
74960c60 VP |
11803 | } |
11804 | else | |
11805 | { | |
b775012e LM |
11806 | /* This location still exists, but it won't be kept in the |
11807 | target since it may have been disabled. We proceed to | |
11808 | remove its target-side condition. */ | |
11809 | ||
4a64f543 MS |
11810 | /* The location is either no longer present, or got |
11811 | disabled. See if there's another location at the | |
11812 | same address, in which case we don't need to remove | |
11813 | this one from the target. */ | |
876fa593 | 11814 | |
2bdf28a0 | 11815 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11816 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11817 | { | |
876fa593 | 11818 | for (loc2p = locp; |
f5336ca5 | 11819 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11820 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11821 | loc2p++) |
11822 | { | |
11823 | struct bp_location *loc2 = *loc2p; | |
11824 | ||
2d134ed3 | 11825 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11826 | { |
85d721b8 PA |
11827 | /* Read watchpoint locations are switched to |
11828 | access watchpoints, if the former are not | |
11829 | supported, but the latter are. */ | |
11830 | if (is_hardware_watchpoint (old_loc->owner)) | |
11831 | { | |
11832 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11833 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11834 | } | |
11835 | ||
934709f0 PW |
11836 | /* loc2 is a duplicated location. We need to check |
11837 | if it should be inserted in case it will be | |
11838 | unduplicated. */ | |
11839 | if (loc2 != old_loc | |
11840 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11841 | { |
934709f0 | 11842 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11843 | keep_in_target = 1; |
11844 | break; | |
11845 | } | |
876fa593 JK |
11846 | } |
11847 | } | |
11848 | } | |
74960c60 VP |
11849 | } |
11850 | ||
20874c92 VP |
11851 | if (!keep_in_target) |
11852 | { | |
834c0d03 | 11853 | if (remove_breakpoint (old_loc)) |
20874c92 | 11854 | { |
4a64f543 MS |
11855 | /* This is just about all we can do. We could keep |
11856 | this location on the global list, and try to | |
11857 | remove it next time, but there's no particular | |
11858 | reason why we will succeed next time. | |
20874c92 | 11859 | |
4a64f543 MS |
11860 | Note that at this point, old_loc->owner is still |
11861 | valid, as delete_breakpoint frees the breakpoint | |
11862 | only after calling us. */ | |
3e43a32a MS |
11863 | printf_filtered (_("warning: Error removing " |
11864 | "breakpoint %d\n"), | |
876fa593 | 11865 | old_loc->owner->number); |
20874c92 VP |
11866 | } |
11867 | removed = 1; | |
11868 | } | |
0d381245 | 11869 | } |
74960c60 VP |
11870 | |
11871 | if (!found_object) | |
1c5cfe86 | 11872 | { |
fbea99ea | 11873 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11874 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11875 | { |
db82e815 PA |
11876 | /* This location was removed from the target. In |
11877 | non-stop mode, a race condition is possible where | |
11878 | we've removed a breakpoint, but stop events for that | |
11879 | breakpoint are already queued and will arrive later. | |
11880 | We apply an heuristic to be able to distinguish such | |
11881 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11882 | breakpoint location for a bit, and will retire it | |
11883 | after we see some number of events. The theory here | |
11884 | is that reporting of events should, "on the average", | |
11885 | be fair, so after a while we'll see events from all | |
11886 | threads that have anything of interest, and no longer | |
11887 | need to keep this breakpoint location around. We | |
11888 | don't hold locations forever so to reduce chances of | |
11889 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11890 | SIGTRAP. | |
11891 | ||
11892 | The heuristic failing can be disastrous on | |
11893 | decr_pc_after_break targets. | |
11894 | ||
11895 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11896 | if we fail to recognize a late breakpoint SIGTRAP, | |
11897 | because events_till_retirement has reached 0 too | |
11898 | soon, we'll fail to do the PC adjustment, and report | |
11899 | a random SIGTRAP to the user. When the user resumes | |
11900 | the inferior, it will most likely immediately crash | |
2dec564e | 11901 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11902 | corrupted, because of being resumed e.g., in the |
11903 | middle of a multi-byte instruction, or skipped a | |
11904 | one-byte instruction. This was actually seen happen | |
11905 | on native x86-linux, and should be less rare on | |
11906 | targets that do not support new thread events, like | |
11907 | remote, due to the heuristic depending on | |
11908 | thread_count. | |
11909 | ||
11910 | Mistaking a random SIGTRAP for a breakpoint trap | |
11911 | causes similar symptoms (PC adjustment applied when | |
11912 | it shouldn't), but then again, playing with SIGTRAPs | |
11913 | behind the debugger's back is asking for trouble. | |
11914 | ||
11915 | Since hardware watchpoint traps are always | |
11916 | distinguishable from other traps, so we don't need to | |
11917 | apply keep hardware watchpoint moribund locations | |
11918 | around. We simply always ignore hardware watchpoint | |
11919 | traps we can no longer explain. */ | |
11920 | ||
876fa593 JK |
11921 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11922 | old_loc->owner = NULL; | |
20874c92 | 11923 | |
1123588c | 11924 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11925 | } |
11926 | else | |
f431efe5 PA |
11927 | { |
11928 | old_loc->owner = NULL; | |
11929 | decref_bp_location (&old_loc); | |
11930 | } | |
20874c92 | 11931 | } |
74960c60 | 11932 | } |
1c5cfe86 | 11933 | |
348d480f PA |
11934 | /* Rescan breakpoints at the same address and section, marking the |
11935 | first one as "first" and any others as "duplicates". This is so | |
11936 | that the bpt instruction is only inserted once. If we have a | |
11937 | permanent breakpoint at the same place as BPT, make that one the | |
11938 | official one, and the rest as duplicates. Permanent breakpoints | |
11939 | are sorted first for the same address. | |
11940 | ||
11941 | Do the same for hardware watchpoints, but also considering the | |
11942 | watchpoint's type (regular/access/read) and length. */ | |
11943 | ||
11944 | bp_loc_first = NULL; | |
11945 | wp_loc_first = NULL; | |
11946 | awp_loc_first = NULL; | |
11947 | rwp_loc_first = NULL; | |
11948 | ALL_BP_LOCATIONS (loc, locp) | |
11949 | { | |
11950 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11951 | non-NULL. */ | |
348d480f | 11952 | struct bp_location **loc_first_p; |
d3fbdd86 | 11953 | b = loc->owner; |
348d480f | 11954 | |
6f380991 | 11955 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 11956 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
11957 | /* Don't detect duplicate for tracepoint locations because they are |
11958 | never duplicated. See the comments in field `duplicate' of | |
11959 | `struct bp_location'. */ | |
348d480f | 11960 | || is_tracepoint (b)) |
b775012e LM |
11961 | { |
11962 | /* Clear the condition modification flag. */ | |
11963 | loc->condition_changed = condition_unchanged; | |
11964 | continue; | |
11965 | } | |
348d480f | 11966 | |
348d480f PA |
11967 | if (b->type == bp_hardware_watchpoint) |
11968 | loc_first_p = &wp_loc_first; | |
11969 | else if (b->type == bp_read_watchpoint) | |
11970 | loc_first_p = &rwp_loc_first; | |
11971 | else if (b->type == bp_access_watchpoint) | |
11972 | loc_first_p = &awp_loc_first; | |
11973 | else | |
11974 | loc_first_p = &bp_loc_first; | |
11975 | ||
11976 | if (*loc_first_p == NULL | |
11977 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11978 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11979 | { | |
11980 | *loc_first_p = loc; | |
11981 | loc->duplicate = 0; | |
b775012e LM |
11982 | |
11983 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11984 | { | |
11985 | loc->needs_update = 1; | |
11986 | /* Clear the condition modification flag. */ | |
11987 | loc->condition_changed = condition_unchanged; | |
11988 | } | |
348d480f PA |
11989 | continue; |
11990 | } | |
11991 | ||
934709f0 PW |
11992 | |
11993 | /* This and the above ensure the invariant that the first location | |
11994 | is not duplicated, and is the inserted one. | |
11995 | All following are marked as duplicated, and are not inserted. */ | |
11996 | if (loc->inserted) | |
11997 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11998 | loc->duplicate = 1; |
11999 | ||
b775012e LM |
12000 | /* Clear the condition modification flag. */ |
12001 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12002 | } |
12003 | ||
a25a5a45 | 12004 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12005 | { |
04086b45 | 12006 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12007 | insert_breakpoint_locations (); |
12008 | else | |
12009 | { | |
44702360 PA |
12010 | /* Even though the caller told us to not insert new |
12011 | locations, we may still need to update conditions on the | |
12012 | target's side of breakpoints that were already inserted | |
12013 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12014 | only update conditions for locations that are marked |
12015 | "needs_update". */ | |
12016 | update_inserted_breakpoint_locations (); | |
12017 | } | |
12018 | } | |
348d480f | 12019 | |
04086b45 | 12020 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12021 | download_tracepoint_locations (); |
348d480f PA |
12022 | } |
12023 | ||
12024 | void | |
12025 | breakpoint_retire_moribund (void) | |
12026 | { | |
1123588c TT |
12027 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12028 | { | |
12029 | struct bp_location *loc = moribund_locations[ix]; | |
12030 | if (--(loc->events_till_retirement) == 0) | |
12031 | { | |
12032 | decref_bp_location (&loc); | |
12033 | unordered_remove (moribund_locations, ix); | |
12034 | --ix; | |
12035 | } | |
12036 | } | |
348d480f PA |
12037 | } |
12038 | ||
12039 | static void | |
44702360 | 12040 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12041 | { |
348d480f | 12042 | |
a70b8144 | 12043 | try |
492d29ea PA |
12044 | { |
12045 | update_global_location_list (insert_mode); | |
12046 | } | |
230d2906 | 12047 | catch (const gdb_exception_error &e) |
492d29ea PA |
12048 | { |
12049 | } | |
348d480f PA |
12050 | } |
12051 | ||
12052 | /* Clear BKP from a BPS. */ | |
12053 | ||
12054 | static void | |
12055 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12056 | { | |
12057 | bpstat bs; | |
12058 | ||
12059 | for (bs = bps; bs; bs = bs->next) | |
12060 | if (bs->breakpoint_at == bpt) | |
12061 | { | |
12062 | bs->breakpoint_at = NULL; | |
12063 | bs->old_val = NULL; | |
12064 | /* bs->commands will be freed later. */ | |
12065 | } | |
12066 | } | |
12067 | ||
12068 | /* Callback for iterate_over_threads. */ | |
12069 | static int | |
12070 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12071 | { | |
9a3c8263 | 12072 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12073 | |
12074 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12075 | return 0; | |
12076 | } | |
12077 | ||
12078 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12079 | callbacks. */ | |
12080 | ||
12081 | static void | |
12082 | say_where (struct breakpoint *b) | |
12083 | { | |
12084 | struct value_print_options opts; | |
12085 | ||
12086 | get_user_print_options (&opts); | |
12087 | ||
12088 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12089 | single string. */ | |
12090 | if (b->loc == NULL) | |
12091 | { | |
f00aae0f KS |
12092 | /* For pending locations, the output differs slightly based |
12093 | on b->extra_string. If this is non-NULL, it contains either | |
12094 | a condition or dprintf arguments. */ | |
12095 | if (b->extra_string == NULL) | |
12096 | { | |
12097 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12098 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12099 | } |
12100 | else if (b->type == bp_dprintf) | |
12101 | { | |
12102 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12103 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12104 | b->extra_string); |
12105 | } | |
12106 | else | |
12107 | { | |
12108 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12109 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12110 | b->extra_string); |
12111 | } | |
348d480f PA |
12112 | } |
12113 | else | |
12114 | { | |
2f202fde | 12115 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12116 | { |
12117 | printf_filtered (" at "); | |
2636d81d PW |
12118 | fputs_styled (paddress (b->loc->gdbarch, b->loc->address), |
12119 | address_style.style (), | |
12120 | gdb_stdout); | |
348d480f | 12121 | } |
2f202fde | 12122 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12123 | { |
12124 | /* If there is a single location, we can print the location | |
12125 | more nicely. */ | |
12126 | if (b->loc->next == NULL) | |
0bb296cb TT |
12127 | { |
12128 | puts_filtered (": file "); | |
12129 | fputs_styled (symtab_to_filename_for_display (b->loc->symtab), | |
12130 | file_name_style.style (), | |
12131 | gdb_stdout); | |
12132 | printf_filtered (", line %d.", | |
12133 | b->loc->line_number); | |
12134 | } | |
f8eba3c6 TT |
12135 | else |
12136 | /* This is not ideal, but each location may have a | |
12137 | different file name, and this at least reflects the | |
12138 | real situation somewhat. */ | |
f00aae0f | 12139 | printf_filtered (": %s.", |
d28cd78a | 12140 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12141 | } |
348d480f PA |
12142 | |
12143 | if (b->loc->next) | |
12144 | { | |
12145 | struct bp_location *loc = b->loc; | |
12146 | int n = 0; | |
12147 | for (; loc; loc = loc->next) | |
12148 | ++n; | |
12149 | printf_filtered (" (%d locations)", n); | |
12150 | } | |
12151 | } | |
12152 | } | |
12153 | ||
5f486660 | 12154 | bp_location::~bp_location () |
348d480f | 12155 | { |
5f486660 | 12156 | xfree (function_name); |
348d480f PA |
12157 | } |
12158 | ||
c1fc2657 | 12159 | /* Destructor for the breakpoint base class. */ |
348d480f | 12160 | |
c1fc2657 | 12161 | breakpoint::~breakpoint () |
348d480f | 12162 | { |
c1fc2657 SM |
12163 | xfree (this->cond_string); |
12164 | xfree (this->extra_string); | |
12165 | xfree (this->filter); | |
348d480f PA |
12166 | } |
12167 | ||
2060206e PA |
12168 | static struct bp_location * |
12169 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12170 | { |
5f486660 | 12171 | return new bp_location (self); |
348d480f PA |
12172 | } |
12173 | ||
2060206e PA |
12174 | static void |
12175 | base_breakpoint_re_set (struct breakpoint *b) | |
12176 | { | |
12177 | /* Nothing to re-set. */ | |
12178 | } | |
12179 | ||
12180 | #define internal_error_pure_virtual_called() \ | |
12181 | gdb_assert_not_reached ("pure virtual function called") | |
12182 | ||
12183 | static int | |
12184 | base_breakpoint_insert_location (struct bp_location *bl) | |
12185 | { | |
12186 | internal_error_pure_virtual_called (); | |
12187 | } | |
12188 | ||
12189 | static int | |
73971819 PA |
12190 | base_breakpoint_remove_location (struct bp_location *bl, |
12191 | enum remove_bp_reason reason) | |
2060206e PA |
12192 | { |
12193 | internal_error_pure_virtual_called (); | |
12194 | } | |
12195 | ||
12196 | static int | |
12197 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12198 | const address_space *aspace, |
09ac7c10 TT |
12199 | CORE_ADDR bp_addr, |
12200 | const struct target_waitstatus *ws) | |
2060206e PA |
12201 | { |
12202 | internal_error_pure_virtual_called (); | |
12203 | } | |
12204 | ||
12205 | static void | |
12206 | base_breakpoint_check_status (bpstat bs) | |
12207 | { | |
12208 | /* Always stop. */ | |
12209 | } | |
12210 | ||
12211 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12212 | errors. */ | |
12213 | ||
12214 | static int | |
12215 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12216 | { | |
12217 | internal_error_pure_virtual_called (); | |
12218 | } | |
12219 | ||
12220 | /* A "resources_needed" breakpoint_ops method that just internal | |
12221 | errors. */ | |
12222 | ||
12223 | static int | |
12224 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12225 | { | |
12226 | internal_error_pure_virtual_called (); | |
12227 | } | |
12228 | ||
12229 | static enum print_stop_action | |
12230 | base_breakpoint_print_it (bpstat bs) | |
12231 | { | |
12232 | internal_error_pure_virtual_called (); | |
12233 | } | |
12234 | ||
12235 | static void | |
12236 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12237 | struct ui_out *uiout) | |
12238 | { | |
12239 | /* nothing */ | |
12240 | } | |
12241 | ||
12242 | static void | |
12243 | base_breakpoint_print_mention (struct breakpoint *b) | |
12244 | { | |
12245 | internal_error_pure_virtual_called (); | |
12246 | } | |
12247 | ||
12248 | static void | |
12249 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12250 | { | |
12251 | internal_error_pure_virtual_called (); | |
12252 | } | |
12253 | ||
983af33b | 12254 | static void |
f00aae0f KS |
12255 | base_breakpoint_create_sals_from_location |
12256 | (const struct event_location *location, | |
12257 | struct linespec_result *canonical, | |
12258 | enum bptype type_wanted) | |
983af33b SDJ |
12259 | { |
12260 | internal_error_pure_virtual_called (); | |
12261 | } | |
12262 | ||
12263 | static void | |
12264 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12265 | struct linespec_result *c, | |
e1e01040 PA |
12266 | gdb::unique_xmalloc_ptr<char> cond_string, |
12267 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12268 | enum bptype type_wanted, |
12269 | enum bpdisp disposition, | |
12270 | int thread, | |
12271 | int task, int ignore_count, | |
12272 | const struct breakpoint_ops *o, | |
12273 | int from_tty, int enabled, | |
44f238bb | 12274 | int internal, unsigned flags) |
983af33b SDJ |
12275 | { |
12276 | internal_error_pure_virtual_called (); | |
12277 | } | |
12278 | ||
6c5b2ebe | 12279 | static std::vector<symtab_and_line> |
f00aae0f KS |
12280 | base_breakpoint_decode_location (struct breakpoint *b, |
12281 | const struct event_location *location, | |
6c5b2ebe | 12282 | struct program_space *search_pspace) |
983af33b SDJ |
12283 | { |
12284 | internal_error_pure_virtual_called (); | |
12285 | } | |
12286 | ||
ab04a2af TT |
12287 | /* The default 'explains_signal' method. */ |
12288 | ||
47591c29 | 12289 | static int |
427cd150 | 12290 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12291 | { |
47591c29 | 12292 | return 1; |
ab04a2af TT |
12293 | } |
12294 | ||
9d6e6e84 HZ |
12295 | /* The default "after_condition_true" method. */ |
12296 | ||
12297 | static void | |
12298 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12299 | { | |
12300 | /* Nothing to do. */ | |
12301 | } | |
12302 | ||
ab04a2af | 12303 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12304 | { |
2060206e PA |
12305 | base_breakpoint_allocate_location, |
12306 | base_breakpoint_re_set, | |
12307 | base_breakpoint_insert_location, | |
12308 | base_breakpoint_remove_location, | |
12309 | base_breakpoint_breakpoint_hit, | |
12310 | base_breakpoint_check_status, | |
12311 | base_breakpoint_resources_needed, | |
12312 | base_breakpoint_works_in_software_mode, | |
12313 | base_breakpoint_print_it, | |
12314 | NULL, | |
12315 | base_breakpoint_print_one_detail, | |
12316 | base_breakpoint_print_mention, | |
983af33b | 12317 | base_breakpoint_print_recreate, |
5f700d83 | 12318 | base_breakpoint_create_sals_from_location, |
983af33b | 12319 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12320 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12321 | base_breakpoint_explains_signal, |
12322 | base_breakpoint_after_condition_true, | |
2060206e PA |
12323 | }; |
12324 | ||
12325 | /* Default breakpoint_ops methods. */ | |
12326 | ||
12327 | static void | |
348d480f PA |
12328 | bkpt_re_set (struct breakpoint *b) |
12329 | { | |
06edf0c0 | 12330 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12331 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12332 | { |
f00aae0f | 12333 | /* Anything without a location can't be re-set. */ |
348d480f | 12334 | delete_breakpoint (b); |
06edf0c0 | 12335 | return; |
348d480f | 12336 | } |
06edf0c0 PA |
12337 | |
12338 | breakpoint_re_set_default (b); | |
348d480f PA |
12339 | } |
12340 | ||
2060206e | 12341 | static int |
348d480f PA |
12342 | bkpt_insert_location (struct bp_location *bl) |
12343 | { | |
cd6c3b4f YQ |
12344 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12345 | ||
579c6ad9 | 12346 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12347 | bl->target_info.placed_address = addr; |
12348 | ||
348d480f | 12349 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12350 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12351 | else |
7c16b83e | 12352 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12353 | } |
12354 | ||
2060206e | 12355 | static int |
73971819 | 12356 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12357 | { |
12358 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12359 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12360 | else | |
73971819 | 12361 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12362 | } |
12363 | ||
2060206e | 12364 | static int |
348d480f | 12365 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12366 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12367 | const struct target_waitstatus *ws) |
348d480f | 12368 | { |
09ac7c10 | 12369 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12370 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12371 | return 0; |
12372 | ||
348d480f PA |
12373 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12374 | aspace, bp_addr)) | |
12375 | return 0; | |
12376 | ||
12377 | if (overlay_debugging /* unmapped overlay section */ | |
12378 | && section_is_overlay (bl->section) | |
12379 | && !section_is_mapped (bl->section)) | |
12380 | return 0; | |
12381 | ||
12382 | return 1; | |
12383 | } | |
12384 | ||
cd1608cc PA |
12385 | static int |
12386 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12387 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12388 | const struct target_waitstatus *ws) |
12389 | { | |
12390 | if (dprintf_style == dprintf_style_agent | |
12391 | && target_can_run_breakpoint_commands ()) | |
12392 | { | |
12393 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12394 | for this address it must be for a breakpoint that happens to | |
12395 | be set at the same address. */ | |
12396 | return 0; | |
12397 | } | |
12398 | ||
12399 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12400 | } | |
12401 | ||
2060206e | 12402 | static int |
348d480f PA |
12403 | bkpt_resources_needed (const struct bp_location *bl) |
12404 | { | |
12405 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12406 | ||
12407 | return 1; | |
12408 | } | |
12409 | ||
2060206e | 12410 | static enum print_stop_action |
348d480f PA |
12411 | bkpt_print_it (bpstat bs) |
12412 | { | |
348d480f PA |
12413 | struct breakpoint *b; |
12414 | const struct bp_location *bl; | |
001c8c33 | 12415 | int bp_temp; |
79a45e25 | 12416 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12417 | |
12418 | gdb_assert (bs->bp_location_at != NULL); | |
12419 | ||
12420 | bl = bs->bp_location_at; | |
12421 | b = bs->breakpoint_at; | |
12422 | ||
001c8c33 PA |
12423 | bp_temp = b->disposition == disp_del; |
12424 | if (bl->address != bl->requested_address) | |
12425 | breakpoint_adjustment_warning (bl->requested_address, | |
12426 | bl->address, | |
12427 | b->number, 1); | |
12428 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12429 | maybe_print_thread_hit_breakpoint (uiout); |
12430 | ||
001c8c33 | 12431 | if (bp_temp) |
112e8700 | 12432 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12433 | else |
112e8700 SM |
12434 | uiout->text ("Breakpoint "); |
12435 | if (uiout->is_mi_like_p ()) | |
348d480f | 12436 | { |
112e8700 | 12437 | uiout->field_string ("reason", |
001c8c33 | 12438 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12439 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12440 | } |
112e8700 SM |
12441 | uiout->field_int ("bkptno", b->number); |
12442 | uiout->text (", "); | |
06edf0c0 | 12443 | |
001c8c33 | 12444 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12445 | } |
12446 | ||
2060206e | 12447 | static void |
06edf0c0 PA |
12448 | bkpt_print_mention (struct breakpoint *b) |
12449 | { | |
112e8700 | 12450 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12451 | return; |
12452 | ||
12453 | switch (b->type) | |
12454 | { | |
12455 | case bp_breakpoint: | |
12456 | case bp_gnu_ifunc_resolver: | |
12457 | if (b->disposition == disp_del) | |
12458 | printf_filtered (_("Temporary breakpoint")); | |
12459 | else | |
12460 | printf_filtered (_("Breakpoint")); | |
12461 | printf_filtered (_(" %d"), b->number); | |
12462 | if (b->type == bp_gnu_ifunc_resolver) | |
12463 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12464 | break; | |
12465 | case bp_hardware_breakpoint: | |
12466 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12467 | break; | |
e7e0cddf SS |
12468 | case bp_dprintf: |
12469 | printf_filtered (_("Dprintf %d"), b->number); | |
12470 | break; | |
06edf0c0 PA |
12471 | } |
12472 | ||
12473 | say_where (b); | |
12474 | } | |
12475 | ||
2060206e | 12476 | static void |
06edf0c0 PA |
12477 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12478 | { | |
12479 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12480 | fprintf_unfiltered (fp, "tbreak"); | |
12481 | else if (tp->type == bp_breakpoint) | |
12482 | fprintf_unfiltered (fp, "break"); | |
12483 | else if (tp->type == bp_hardware_breakpoint | |
12484 | && tp->disposition == disp_del) | |
12485 | fprintf_unfiltered (fp, "thbreak"); | |
12486 | else if (tp->type == bp_hardware_breakpoint) | |
12487 | fprintf_unfiltered (fp, "hbreak"); | |
12488 | else | |
12489 | internal_error (__FILE__, __LINE__, | |
12490 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12491 | ||
f00aae0f | 12492 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12493 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12494 | |
12495 | /* Print out extra_string if this breakpoint is pending. It might | |
12496 | contain, for example, conditions that were set by the user. */ | |
12497 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12498 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12499 | ||
dd11a36c | 12500 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12501 | } |
12502 | ||
983af33b | 12503 | static void |
f00aae0f KS |
12504 | bkpt_create_sals_from_location (const struct event_location *location, |
12505 | struct linespec_result *canonical, | |
12506 | enum bptype type_wanted) | |
983af33b | 12507 | { |
f00aae0f | 12508 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12509 | } |
12510 | ||
12511 | static void | |
12512 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12513 | struct linespec_result *canonical, | |
e1e01040 PA |
12514 | gdb::unique_xmalloc_ptr<char> cond_string, |
12515 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12516 | enum bptype type_wanted, |
12517 | enum bpdisp disposition, | |
12518 | int thread, | |
12519 | int task, int ignore_count, | |
12520 | const struct breakpoint_ops *ops, | |
12521 | int from_tty, int enabled, | |
44f238bb | 12522 | int internal, unsigned flags) |
983af33b | 12523 | { |
023fa29b | 12524 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12525 | std::move (cond_string), |
12526 | std::move (extra_string), | |
e7e0cddf | 12527 | type_wanted, |
983af33b SDJ |
12528 | disposition, thread, task, |
12529 | ignore_count, ops, from_tty, | |
44f238bb | 12530 | enabled, internal, flags); |
983af33b SDJ |
12531 | } |
12532 | ||
6c5b2ebe | 12533 | static std::vector<symtab_and_line> |
f00aae0f KS |
12534 | bkpt_decode_location (struct breakpoint *b, |
12535 | const struct event_location *location, | |
6c5b2ebe | 12536 | struct program_space *search_pspace) |
983af33b | 12537 | { |
6c5b2ebe | 12538 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12539 | } |
12540 | ||
06edf0c0 PA |
12541 | /* Virtual table for internal breakpoints. */ |
12542 | ||
12543 | static void | |
12544 | internal_bkpt_re_set (struct breakpoint *b) | |
12545 | { | |
12546 | switch (b->type) | |
12547 | { | |
12548 | /* Delete overlay event and longjmp master breakpoints; they | |
12549 | will be reset later by breakpoint_re_set. */ | |
12550 | case bp_overlay_event: | |
12551 | case bp_longjmp_master: | |
12552 | case bp_std_terminate_master: | |
12553 | case bp_exception_master: | |
12554 | delete_breakpoint (b); | |
12555 | break; | |
12556 | ||
12557 | /* This breakpoint is special, it's set up when the inferior | |
12558 | starts and we really don't want to touch it. */ | |
12559 | case bp_shlib_event: | |
12560 | ||
12561 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12562 | it is set up, we do not want to touch it. */ | |
12563 | case bp_thread_event: | |
12564 | break; | |
12565 | } | |
12566 | } | |
12567 | ||
12568 | static void | |
12569 | internal_bkpt_check_status (bpstat bs) | |
12570 | { | |
a9b3a50f PA |
12571 | if (bs->breakpoint_at->type == bp_shlib_event) |
12572 | { | |
12573 | /* If requested, stop when the dynamic linker notifies GDB of | |
12574 | events. This allows the user to get control and place | |
12575 | breakpoints in initializer routines for dynamically loaded | |
12576 | objects (among other things). */ | |
12577 | bs->stop = stop_on_solib_events; | |
12578 | bs->print = stop_on_solib_events; | |
12579 | } | |
12580 | else | |
12581 | bs->stop = 0; | |
06edf0c0 PA |
12582 | } |
12583 | ||
12584 | static enum print_stop_action | |
12585 | internal_bkpt_print_it (bpstat bs) | |
12586 | { | |
06edf0c0 | 12587 | struct breakpoint *b; |
06edf0c0 | 12588 | |
06edf0c0 PA |
12589 | b = bs->breakpoint_at; |
12590 | ||
06edf0c0 PA |
12591 | switch (b->type) |
12592 | { | |
348d480f PA |
12593 | case bp_shlib_event: |
12594 | /* Did we stop because the user set the stop_on_solib_events | |
12595 | variable? (If so, we report this as a generic, "Stopped due | |
12596 | to shlib event" message.) */ | |
edcc5120 | 12597 | print_solib_event (0); |
348d480f PA |
12598 | break; |
12599 | ||
12600 | case bp_thread_event: | |
12601 | /* Not sure how we will get here. | |
12602 | GDB should not stop for these breakpoints. */ | |
12603 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12604 | break; |
12605 | ||
12606 | case bp_overlay_event: | |
12607 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12608 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12609 | break; |
12610 | ||
12611 | case bp_longjmp_master: | |
12612 | /* These should never be enabled. */ | |
12613 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12614 | break; |
12615 | ||
12616 | case bp_std_terminate_master: | |
12617 | /* These should never be enabled. */ | |
12618 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12619 | "gdb should not stop!\n")); | |
348d480f PA |
12620 | break; |
12621 | ||
12622 | case bp_exception_master: | |
12623 | /* These should never be enabled. */ | |
12624 | printf_filtered (_("Exception Master Breakpoint: " | |
12625 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12626 | break; |
12627 | } | |
12628 | ||
001c8c33 | 12629 | return PRINT_NOTHING; |
06edf0c0 PA |
12630 | } |
12631 | ||
12632 | static void | |
12633 | internal_bkpt_print_mention (struct breakpoint *b) | |
12634 | { | |
12635 | /* Nothing to mention. These breakpoints are internal. */ | |
12636 | } | |
12637 | ||
06edf0c0 PA |
12638 | /* Virtual table for momentary breakpoints */ |
12639 | ||
12640 | static void | |
12641 | momentary_bkpt_re_set (struct breakpoint *b) | |
12642 | { | |
12643 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12644 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12645 | Otherwise these should have been blown away via the cleanup chain |
12646 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12647 | } | |
12648 | ||
12649 | static void | |
12650 | momentary_bkpt_check_status (bpstat bs) | |
12651 | { | |
12652 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12653 | } | |
12654 | ||
12655 | static enum print_stop_action | |
12656 | momentary_bkpt_print_it (bpstat bs) | |
12657 | { | |
001c8c33 | 12658 | return PRINT_UNKNOWN; |
348d480f PA |
12659 | } |
12660 | ||
06edf0c0 PA |
12661 | static void |
12662 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12663 | { |
06edf0c0 | 12664 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12665 | } |
12666 | ||
e2e4d78b JK |
12667 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12668 | ||
12669 | It gets cleared already on the removal of the first one of such placed | |
12670 | breakpoints. This is OK as they get all removed altogether. */ | |
12671 | ||
c1fc2657 | 12672 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12673 | { |
c1fc2657 | 12674 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12675 | |
c1fc2657 | 12676 | if (tp != NULL) |
e2e4d78b | 12677 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12678 | } |
12679 | ||
55aa24fb SDJ |
12680 | /* Specific methods for probe breakpoints. */ |
12681 | ||
12682 | static int | |
12683 | bkpt_probe_insert_location (struct bp_location *bl) | |
12684 | { | |
12685 | int v = bkpt_insert_location (bl); | |
12686 | ||
12687 | if (v == 0) | |
12688 | { | |
12689 | /* The insertion was successful, now let's set the probe's semaphore | |
12690 | if needed. */ | |
935676c9 | 12691 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12692 | } |
12693 | ||
12694 | return v; | |
12695 | } | |
12696 | ||
12697 | static int | |
73971819 PA |
12698 | bkpt_probe_remove_location (struct bp_location *bl, |
12699 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12700 | { |
12701 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12702 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12703 | |
73971819 | 12704 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12705 | } |
12706 | ||
12707 | static void | |
f00aae0f | 12708 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12709 | struct linespec_result *canonical, |
f00aae0f | 12710 | enum bptype type_wanted) |
55aa24fb SDJ |
12711 | { |
12712 | struct linespec_sals lsal; | |
12713 | ||
c2f4122d | 12714 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12715 | lsal.canonical |
12716 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12717 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12718 | } |
12719 | ||
6c5b2ebe | 12720 | static std::vector<symtab_and_line> |
f00aae0f KS |
12721 | bkpt_probe_decode_location (struct breakpoint *b, |
12722 | const struct event_location *location, | |
6c5b2ebe | 12723 | struct program_space *search_pspace) |
55aa24fb | 12724 | { |
6c5b2ebe PA |
12725 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12726 | if (sals.empty ()) | |
55aa24fb | 12727 | error (_("probe not found")); |
6c5b2ebe | 12728 | return sals; |
55aa24fb SDJ |
12729 | } |
12730 | ||
348d480f | 12731 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12732 | |
348d480f PA |
12733 | static void |
12734 | tracepoint_re_set (struct breakpoint *b) | |
12735 | { | |
12736 | breakpoint_re_set_default (b); | |
12737 | } | |
876fa593 | 12738 | |
348d480f PA |
12739 | static int |
12740 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12741 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12742 | const struct target_waitstatus *ws) |
348d480f PA |
12743 | { |
12744 | /* By definition, the inferior does not report stops at | |
12745 | tracepoints. */ | |
12746 | return 0; | |
74960c60 VP |
12747 | } |
12748 | ||
12749 | static void | |
348d480f PA |
12750 | tracepoint_print_one_detail (const struct breakpoint *self, |
12751 | struct ui_out *uiout) | |
74960c60 | 12752 | { |
d9b3f62e | 12753 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12754 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12755 | { |
12756 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12757 | |
112e8700 SM |
12758 | uiout->text ("\tmarker id is "); |
12759 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12760 | tp->static_trace_marker_id); |
112e8700 | 12761 | uiout->text ("\n"); |
348d480f | 12762 | } |
0d381245 VP |
12763 | } |
12764 | ||
a474d7c2 | 12765 | static void |
348d480f | 12766 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12767 | { |
112e8700 | 12768 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12769 | return; |
cc59ec59 | 12770 | |
348d480f PA |
12771 | switch (b->type) |
12772 | { | |
12773 | case bp_tracepoint: | |
12774 | printf_filtered (_("Tracepoint")); | |
12775 | printf_filtered (_(" %d"), b->number); | |
12776 | break; | |
12777 | case bp_fast_tracepoint: | |
12778 | printf_filtered (_("Fast tracepoint")); | |
12779 | printf_filtered (_(" %d"), b->number); | |
12780 | break; | |
12781 | case bp_static_tracepoint: | |
12782 | printf_filtered (_("Static tracepoint")); | |
12783 | printf_filtered (_(" %d"), b->number); | |
12784 | break; | |
12785 | default: | |
12786 | internal_error (__FILE__, __LINE__, | |
12787 | _("unhandled tracepoint type %d"), (int) b->type); | |
12788 | } | |
12789 | ||
12790 | say_where (b); | |
a474d7c2 PA |
12791 | } |
12792 | ||
348d480f | 12793 | static void |
d9b3f62e | 12794 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12795 | { |
d9b3f62e PA |
12796 | struct tracepoint *tp = (struct tracepoint *) self; |
12797 | ||
12798 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12799 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12800 | else if (self->type == bp_static_tracepoint) |
348d480f | 12801 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12802 | else if (self->type == bp_tracepoint) |
348d480f PA |
12803 | fprintf_unfiltered (fp, "trace"); |
12804 | else | |
12805 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12806 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12807 | |
f00aae0f | 12808 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12809 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12810 | print_recreate_thread (self, fp); |
12811 | ||
12812 | if (tp->pass_count) | |
12813 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12814 | } |
12815 | ||
983af33b | 12816 | static void |
f00aae0f KS |
12817 | tracepoint_create_sals_from_location (const struct event_location *location, |
12818 | struct linespec_result *canonical, | |
12819 | enum bptype type_wanted) | |
983af33b | 12820 | { |
f00aae0f | 12821 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12822 | } |
12823 | ||
12824 | static void | |
12825 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12826 | struct linespec_result *canonical, | |
e1e01040 PA |
12827 | gdb::unique_xmalloc_ptr<char> cond_string, |
12828 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12829 | enum bptype type_wanted, |
12830 | enum bpdisp disposition, | |
12831 | int thread, | |
12832 | int task, int ignore_count, | |
12833 | const struct breakpoint_ops *ops, | |
12834 | int from_tty, int enabled, | |
44f238bb | 12835 | int internal, unsigned flags) |
983af33b | 12836 | { |
023fa29b | 12837 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12838 | std::move (cond_string), |
12839 | std::move (extra_string), | |
e7e0cddf | 12840 | type_wanted, |
983af33b SDJ |
12841 | disposition, thread, task, |
12842 | ignore_count, ops, from_tty, | |
44f238bb | 12843 | enabled, internal, flags); |
983af33b SDJ |
12844 | } |
12845 | ||
6c5b2ebe | 12846 | static std::vector<symtab_and_line> |
f00aae0f KS |
12847 | tracepoint_decode_location (struct breakpoint *b, |
12848 | const struct event_location *location, | |
6c5b2ebe | 12849 | struct program_space *search_pspace) |
983af33b | 12850 | { |
6c5b2ebe | 12851 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12852 | } |
12853 | ||
2060206e | 12854 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12855 | |
55aa24fb SDJ |
12856 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12857 | static probe. */ | |
12858 | ||
12859 | static void | |
f00aae0f KS |
12860 | tracepoint_probe_create_sals_from_location |
12861 | (const struct event_location *location, | |
12862 | struct linespec_result *canonical, | |
12863 | enum bptype type_wanted) | |
55aa24fb SDJ |
12864 | { |
12865 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12866 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12867 | } |
12868 | ||
6c5b2ebe | 12869 | static std::vector<symtab_and_line> |
f00aae0f KS |
12870 | tracepoint_probe_decode_location (struct breakpoint *b, |
12871 | const struct event_location *location, | |
6c5b2ebe | 12872 | struct program_space *search_pspace) |
55aa24fb SDJ |
12873 | { |
12874 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12875 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12876 | } |
12877 | ||
12878 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12879 | ||
5c2b4418 HZ |
12880 | /* Dprintf breakpoint_ops methods. */ |
12881 | ||
12882 | static void | |
12883 | dprintf_re_set (struct breakpoint *b) | |
12884 | { | |
12885 | breakpoint_re_set_default (b); | |
12886 | ||
f00aae0f KS |
12887 | /* extra_string should never be non-NULL for dprintf. */ |
12888 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12889 | |
12890 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12891 | 2 - create a dprintf, which resolves fine. | |
12892 | 3 - disconnect from target 1 | |
12893 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12894 | ||
12895 | After steps #3/#4, you'll want the dprintf command list to | |
12896 | be updated, because target 1 and 2 may well return different | |
12897 | answers for target_can_run_breakpoint_commands(). | |
12898 | Given absence of finer grained resetting, we get to do | |
12899 | it all the time. */ | |
12900 | if (b->extra_string != NULL) | |
12901 | update_dprintf_command_list (b); | |
12902 | } | |
12903 | ||
2d9442cc HZ |
12904 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12905 | ||
12906 | static void | |
12907 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12908 | { | |
f00aae0f | 12909 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12910 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12911 | tp->extra_string); |
12912 | print_recreate_thread (tp, fp); | |
12913 | } | |
12914 | ||
9d6e6e84 HZ |
12915 | /* Implement the "after_condition_true" breakpoint_ops method for |
12916 | dprintf. | |
12917 | ||
12918 | dprintf's are implemented with regular commands in their command | |
12919 | list, but we run the commands here instead of before presenting the | |
12920 | stop to the user, as dprintf's don't actually cause a stop. This | |
12921 | also makes it so that the commands of multiple dprintfs at the same | |
12922 | address are all handled. */ | |
12923 | ||
12924 | static void | |
12925 | dprintf_after_condition_true (struct bpstats *bs) | |
12926 | { | |
04afa70c | 12927 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12928 | struct bpstats *tmp_bs_p = &tmp_bs; |
12929 | ||
12930 | /* dprintf's never cause a stop. This wasn't set in the | |
12931 | check_status hook instead because that would make the dprintf's | |
12932 | condition not be evaluated. */ | |
12933 | bs->stop = 0; | |
12934 | ||
12935 | /* Run the command list here. Take ownership of it instead of | |
12936 | copying. We never want these commands to run later in | |
12937 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12938 | be set at same address as this dprintf, or even if running the | |
12939 | commands here throws. */ | |
12940 | tmp_bs.commands = bs->commands; | |
12941 | bs->commands = NULL; | |
9d6e6e84 HZ |
12942 | |
12943 | bpstat_do_actions_1 (&tmp_bs_p); | |
12944 | ||
12945 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12946 | bpstat_do_actions_1 may return early without processing the whole | |
12947 | list. */ | |
9d6e6e84 HZ |
12948 | } |
12949 | ||
983af33b SDJ |
12950 | /* The breakpoint_ops structure to be used on static tracepoints with |
12951 | markers (`-m'). */ | |
12952 | ||
12953 | static void | |
f00aae0f | 12954 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12955 | struct linespec_result *canonical, |
f00aae0f | 12956 | enum bptype type_wanted) |
983af33b SDJ |
12957 | { |
12958 | struct linespec_sals lsal; | |
f00aae0f | 12959 | const char *arg_start, *arg; |
983af33b | 12960 | |
a20714ff | 12961 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12962 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12963 | |
f2fc3015 TT |
12964 | std::string str (arg_start, arg - arg_start); |
12965 | const char *ptr = str.c_str (); | |
a20714ff PA |
12966 | canonical->location |
12967 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12968 | |
8e9e35b1 TT |
12969 | lsal.canonical |
12970 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12971 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12972 | } |
12973 | ||
12974 | static void | |
12975 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12976 | struct linespec_result *canonical, | |
e1e01040 PA |
12977 | gdb::unique_xmalloc_ptr<char> cond_string, |
12978 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12979 | enum bptype type_wanted, |
12980 | enum bpdisp disposition, | |
12981 | int thread, | |
12982 | int task, int ignore_count, | |
12983 | const struct breakpoint_ops *ops, | |
12984 | int from_tty, int enabled, | |
44f238bb | 12985 | int internal, unsigned flags) |
983af33b | 12986 | { |
6c5b2ebe | 12987 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12988 | |
12989 | /* If the user is creating a static tracepoint by marker id | |
12990 | (strace -m MARKER_ID), then store the sals index, so that | |
12991 | breakpoint_re_set can try to match up which of the newly | |
12992 | found markers corresponds to this one, and, don't try to | |
12993 | expand multiple locations for each sal, given than SALS | |
12994 | already should contain all sals for MARKER_ID. */ | |
12995 | ||
6c5b2ebe | 12996 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12997 | { |
6c5b2ebe PA |
12998 | event_location_up location |
12999 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13000 | |
b270e6f9 | 13001 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13002 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13003 | std::move (location), NULL, |
e1e01040 PA |
13004 | std::move (cond_string), |
13005 | std::move (extra_string), | |
e7e0cddf | 13006 | type_wanted, disposition, |
983af33b | 13007 | thread, task, ignore_count, ops, |
44f238bb | 13008 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13009 | canonical->special_display); |
13010 | /* Given that its possible to have multiple markers with | |
13011 | the same string id, if the user is creating a static | |
13012 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13013 | store the sals index, so that breakpoint_re_set can | |
13014 | try to match up which of the newly found markers | |
13015 | corresponds to this one */ | |
13016 | tp->static_trace_marker_id_idx = i; | |
13017 | ||
b270e6f9 | 13018 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13019 | } |
13020 | } | |
13021 | ||
6c5b2ebe | 13022 | static std::vector<symtab_and_line> |
f00aae0f KS |
13023 | strace_marker_decode_location (struct breakpoint *b, |
13024 | const struct event_location *location, | |
6c5b2ebe | 13025 | struct program_space *search_pspace) |
983af33b SDJ |
13026 | { |
13027 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13028 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13029 | |
6c5b2ebe PA |
13030 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13031 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13032 | { |
6c5b2ebe PA |
13033 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13034 | sals.resize (1); | |
13035 | return sals; | |
983af33b SDJ |
13036 | } |
13037 | else | |
5d9310c4 | 13038 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13039 | } |
13040 | ||
13041 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13042 | ||
13043 | static int | |
13044 | strace_marker_p (struct breakpoint *b) | |
13045 | { | |
13046 | return b->ops == &strace_marker_breakpoint_ops; | |
13047 | } | |
13048 | ||
53a5351d | 13049 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13050 | structures. */ |
c906108c SS |
13051 | |
13052 | void | |
fba45db2 | 13053 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13054 | { |
52f0bd74 | 13055 | struct breakpoint *b; |
c906108c | 13056 | |
8a3fe4f8 | 13057 | gdb_assert (bpt != NULL); |
c906108c | 13058 | |
4a64f543 MS |
13059 | /* Has this bp already been deleted? This can happen because |
13060 | multiple lists can hold pointers to bp's. bpstat lists are | |
13061 | especial culprits. | |
13062 | ||
13063 | One example of this happening is a watchpoint's scope bp. When | |
13064 | the scope bp triggers, we notice that the watchpoint is out of | |
13065 | scope, and delete it. We also delete its scope bp. But the | |
13066 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13067 | That bpstat is then checked for auto-deleting bp's, which are | |
13068 | deleted. | |
13069 | ||
13070 | A real solution to this problem might involve reference counts in | |
13071 | bp's, and/or giving them pointers back to their referencing | |
13072 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13073 | storage when no more references were extent. A cheaper bandaid | |
13074 | was chosen. */ | |
c906108c SS |
13075 | if (bpt->type == bp_none) |
13076 | return; | |
13077 | ||
4a64f543 MS |
13078 | /* At least avoid this stale reference until the reference counting |
13079 | of breakpoints gets resolved. */ | |
d0fb5eae | 13080 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13081 | { |
d0fb5eae | 13082 | struct breakpoint *related; |
3a5c3e22 | 13083 | struct watchpoint *w; |
d0fb5eae JK |
13084 | |
13085 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13086 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13087 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13088 | w = (struct watchpoint *) bpt; |
13089 | else | |
13090 | w = NULL; | |
13091 | if (w != NULL) | |
13092 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13093 | |
13094 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13095 | for (related = bpt; related->related_breakpoint != bpt; | |
13096 | related = related->related_breakpoint); | |
13097 | related->related_breakpoint = bpt->related_breakpoint; | |
13098 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13099 | } |
13100 | ||
a9634178 TJB |
13101 | /* watch_command_1 creates a watchpoint but only sets its number if |
13102 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13103 | a problem in that process, we'll be asked to delete the half-created | |
13104 | watchpoint. In that case, don't announce the deletion. */ | |
13105 | if (bpt->number) | |
76727919 | 13106 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13107 | |
c906108c SS |
13108 | if (breakpoint_chain == bpt) |
13109 | breakpoint_chain = bpt->next; | |
13110 | ||
c906108c SS |
13111 | ALL_BREAKPOINTS (b) |
13112 | if (b->next == bpt) | |
c5aa993b JM |
13113 | { |
13114 | b->next = bpt->next; | |
13115 | break; | |
13116 | } | |
c906108c | 13117 | |
f431efe5 PA |
13118 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13119 | been freed. */ | |
13120 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13121 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13122 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13123 | commands are associated with the bpstat; if we remove it here, | |
13124 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13125 | event-top.c won't do anything, and temporary breakpoints with | |
13126 | commands won't work. */ | |
13127 | ||
13128 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13129 | ||
4a64f543 MS |
13130 | /* Now that breakpoint is removed from breakpoint list, update the |
13131 | global location list. This will remove locations that used to | |
13132 | belong to this breakpoint. Do this before freeing the breakpoint | |
13133 | itself, since remove_breakpoint looks at location's owner. It | |
13134 | might be better design to have location completely | |
13135 | self-contained, but it's not the case now. */ | |
44702360 | 13136 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13137 | |
4a64f543 MS |
13138 | /* On the chance that someone will soon try again to delete this |
13139 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13140 | bpt->type = bp_none; |
4d01a485 | 13141 | delete bpt; |
c906108c SS |
13142 | } |
13143 | ||
51be5b68 PA |
13144 | /* Iterator function to call a user-provided callback function once |
13145 | for each of B and its related breakpoints. */ | |
13146 | ||
13147 | static void | |
13148 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13149 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13150 | { |
13151 | struct breakpoint *related; | |
13152 | ||
13153 | related = b; | |
13154 | do | |
13155 | { | |
13156 | struct breakpoint *next; | |
13157 | ||
13158 | /* FUNCTION may delete RELATED. */ | |
13159 | next = related->related_breakpoint; | |
13160 | ||
13161 | if (next == related) | |
13162 | { | |
13163 | /* RELATED is the last ring entry. */ | |
48649e1b | 13164 | function (related); |
51be5b68 PA |
13165 | |
13166 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13167 | B. There's nothing left to do anyway, so just break | |
13168 | out. */ | |
13169 | break; | |
13170 | } | |
13171 | else | |
48649e1b | 13172 | function (related); |
51be5b68 PA |
13173 | |
13174 | related = next; | |
13175 | } | |
13176 | while (related != b); | |
13177 | } | |
95a42b64 | 13178 | |
4495129a | 13179 | static void |
981a3fb3 | 13180 | delete_command (const char *arg, int from_tty) |
c906108c | 13181 | { |
35df4500 | 13182 | struct breakpoint *b, *b_tmp; |
c906108c | 13183 | |
ea9365bb TT |
13184 | dont_repeat (); |
13185 | ||
c906108c SS |
13186 | if (arg == 0) |
13187 | { | |
13188 | int breaks_to_delete = 0; | |
13189 | ||
46c6471b PA |
13190 | /* Delete all breakpoints if no argument. Do not delete |
13191 | internal breakpoints, these have to be deleted with an | |
13192 | explicit breakpoint number argument. */ | |
c5aa993b | 13193 | ALL_BREAKPOINTS (b) |
46c6471b | 13194 | if (user_breakpoint_p (b)) |
973d738b DJ |
13195 | { |
13196 | breaks_to_delete = 1; | |
13197 | break; | |
13198 | } | |
c906108c SS |
13199 | |
13200 | /* Ask user only if there are some breakpoints to delete. */ | |
13201 | if (!from_tty | |
e2e0b3e5 | 13202 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13203 | { |
35df4500 | 13204 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13205 | if (user_breakpoint_p (b)) |
c5aa993b | 13206 | delete_breakpoint (b); |
c906108c SS |
13207 | } |
13208 | } | |
13209 | else | |
48649e1b | 13210 | map_breakpoint_numbers |
b926417a | 13211 | (arg, [&] (breakpoint *br) |
48649e1b | 13212 | { |
b926417a | 13213 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13214 | }); |
c906108c SS |
13215 | } |
13216 | ||
c2f4122d PA |
13217 | /* Return true if all locations of B bound to PSPACE are pending. If |
13218 | PSPACE is NULL, all locations of all program spaces are | |
13219 | considered. */ | |
13220 | ||
0d381245 | 13221 | static int |
c2f4122d | 13222 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13223 | { |
c2f4122d PA |
13224 | struct bp_location *loc; |
13225 | ||
13226 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13227 | if ((pspace == NULL | |
13228 | || loc->pspace == pspace) | |
13229 | && !loc->shlib_disabled | |
8645ff69 | 13230 | && !loc->pspace->executing_startup) |
0d381245 VP |
13231 | return 0; |
13232 | return 1; | |
fe3f5fa8 VP |
13233 | } |
13234 | ||
776592bf DE |
13235 | /* Subroutine of update_breakpoint_locations to simplify it. |
13236 | Return non-zero if multiple fns in list LOC have the same name. | |
13237 | Null names are ignored. */ | |
13238 | ||
13239 | static int | |
13240 | ambiguous_names_p (struct bp_location *loc) | |
13241 | { | |
13242 | struct bp_location *l; | |
459a2e4c TT |
13243 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13244 | xcalloc, xfree); | |
776592bf DE |
13245 | |
13246 | for (l = loc; l != NULL; l = l->next) | |
13247 | { | |
13248 | const char **slot; | |
13249 | const char *name = l->function_name; | |
13250 | ||
13251 | /* Allow for some names to be NULL, ignore them. */ | |
13252 | if (name == NULL) | |
13253 | continue; | |
13254 | ||
13255 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13256 | INSERT); | |
4a64f543 MS |
13257 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13258 | returns NULL. */ | |
776592bf DE |
13259 | if (*slot != NULL) |
13260 | { | |
13261 | htab_delete (htab); | |
13262 | return 1; | |
13263 | } | |
13264 | *slot = name; | |
13265 | } | |
13266 | ||
13267 | htab_delete (htab); | |
13268 | return 0; | |
13269 | } | |
13270 | ||
0fb4aa4b PA |
13271 | /* When symbols change, it probably means the sources changed as well, |
13272 | and it might mean the static tracepoint markers are no longer at | |
13273 | the same address or line numbers they used to be at last we | |
13274 | checked. Losing your static tracepoints whenever you rebuild is | |
13275 | undesirable. This function tries to resync/rematch gdb static | |
13276 | tracepoints with the markers on the target, for static tracepoints | |
13277 | that have not been set by marker id. Static tracepoint that have | |
13278 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13279 | The heuristic is: | |
13280 | ||
13281 | 1) For a tracepoint set at a specific address, look for a marker at | |
13282 | the old PC. If one is found there, assume to be the same marker. | |
13283 | If the name / string id of the marker found is different from the | |
13284 | previous known name, assume that means the user renamed the marker | |
13285 | in the sources, and output a warning. | |
13286 | ||
13287 | 2) For a tracepoint set at a given line number, look for a marker | |
13288 | at the new address of the old line number. If one is found there, | |
13289 | assume to be the same marker. If the name / string id of the | |
13290 | marker found is different from the previous known name, assume that | |
13291 | means the user renamed the marker in the sources, and output a | |
13292 | warning. | |
13293 | ||
13294 | 3) If a marker is no longer found at the same address or line, it | |
13295 | may mean the marker no longer exists. But it may also just mean | |
13296 | the code changed a bit. Maybe the user added a few lines of code | |
13297 | that made the marker move up or down (in line number terms). Ask | |
13298 | the target for info about the marker with the string id as we knew | |
13299 | it. If found, update line number and address in the matching | |
13300 | static tracepoint. This will get confused if there's more than one | |
13301 | marker with the same ID (possible in UST, although unadvised | |
13302 | precisely because it confuses tools). */ | |
13303 | ||
13304 | static struct symtab_and_line | |
13305 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13306 | { | |
d9b3f62e | 13307 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13308 | struct static_tracepoint_marker marker; |
13309 | CORE_ADDR pc; | |
0fb4aa4b PA |
13310 | |
13311 | pc = sal.pc; | |
13312 | if (sal.line) | |
13313 | find_line_pc (sal.symtab, sal.line, &pc); | |
13314 | ||
13315 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13316 | { | |
5d9310c4 | 13317 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13318 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13319 | b->number, tp->static_trace_marker_id.c_str (), |
13320 | marker.str_id.c_str ()); | |
0fb4aa4b | 13321 | |
5d9310c4 | 13322 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13323 | |
13324 | return sal; | |
13325 | } | |
13326 | ||
13327 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13328 | by string ID. */ | |
13329 | if (!sal.explicit_pc | |
13330 | && sal.line != 0 | |
13331 | && sal.symtab != NULL | |
5d9310c4 | 13332 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13333 | { |
5d9310c4 SM |
13334 | std::vector<static_tracepoint_marker> markers |
13335 | = target_static_tracepoint_markers_by_strid | |
13336 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13337 | |
5d9310c4 | 13338 | if (!markers.empty ()) |
0fb4aa4b | 13339 | { |
0fb4aa4b | 13340 | struct symbol *sym; |
80e1d417 | 13341 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13342 | struct ui_out *uiout = current_uiout; |
67994074 | 13343 | struct explicit_location explicit_loc; |
0fb4aa4b | 13344 | |
5d9310c4 | 13345 | tpmarker = &markers[0]; |
0fb4aa4b | 13346 | |
5d9310c4 | 13347 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13348 | |
13349 | warning (_("marker for static tracepoint %d (%s) not " | |
13350 | "found at previous line number"), | |
5d9310c4 | 13351 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13352 | |
51abb421 | 13353 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13354 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13355 | uiout->text ("Now in "); |
0fb4aa4b PA |
13356 | if (sym) |
13357 | { | |
cbe56571 TT |
13358 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
13359 | ui_out_style_kind::FUNCTION); | |
112e8700 | 13360 | uiout->text (" at "); |
0fb4aa4b | 13361 | } |
112e8700 | 13362 | uiout->field_string ("file", |
cbe56571 TT |
13363 | symtab_to_filename_for_display (sal2.symtab), |
13364 | ui_out_style_kind::FILE); | |
112e8700 | 13365 | uiout->text (":"); |
0fb4aa4b | 13366 | |
112e8700 | 13367 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13368 | { |
0b0865da | 13369 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13370 | |
112e8700 | 13371 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13372 | } |
13373 | ||
112e8700 SM |
13374 | uiout->field_int ("line", sal2.line); |
13375 | uiout->text ("\n"); | |
0fb4aa4b | 13376 | |
80e1d417 | 13377 | b->loc->line_number = sal2.line; |
2f202fde | 13378 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13379 | |
d28cd78a | 13380 | b->location.reset (NULL); |
67994074 KS |
13381 | initialize_explicit_location (&explicit_loc); |
13382 | explicit_loc.source_filename | |
00e52e53 | 13383 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13384 | explicit_loc.line_offset.offset = b->loc->line_number; |
13385 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13386 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13387 | |
13388 | /* Might be nice to check if function changed, and warn if | |
13389 | so. */ | |
0fb4aa4b PA |
13390 | } |
13391 | } | |
13392 | return sal; | |
13393 | } | |
13394 | ||
8d3788bd VP |
13395 | /* Returns 1 iff locations A and B are sufficiently same that |
13396 | we don't need to report breakpoint as changed. */ | |
13397 | ||
13398 | static int | |
13399 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13400 | { | |
13401 | while (a && b) | |
13402 | { | |
13403 | if (a->address != b->address) | |
13404 | return 0; | |
13405 | ||
13406 | if (a->shlib_disabled != b->shlib_disabled) | |
13407 | return 0; | |
13408 | ||
13409 | if (a->enabled != b->enabled) | |
13410 | return 0; | |
13411 | ||
13412 | a = a->next; | |
13413 | b = b->next; | |
13414 | } | |
13415 | ||
13416 | if ((a == NULL) != (b == NULL)) | |
13417 | return 0; | |
13418 | ||
13419 | return 1; | |
13420 | } | |
13421 | ||
c2f4122d PA |
13422 | /* Split all locations of B that are bound to PSPACE out of B's |
13423 | location list to a separate list and return that list's head. If | |
13424 | PSPACE is NULL, hoist out all locations of B. */ | |
13425 | ||
13426 | static struct bp_location * | |
13427 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13428 | { | |
13429 | struct bp_location head; | |
13430 | struct bp_location *i = b->loc; | |
13431 | struct bp_location **i_link = &b->loc; | |
13432 | struct bp_location *hoisted = &head; | |
13433 | ||
13434 | if (pspace == NULL) | |
13435 | { | |
13436 | i = b->loc; | |
13437 | b->loc = NULL; | |
13438 | return i; | |
13439 | } | |
13440 | ||
13441 | head.next = NULL; | |
13442 | ||
13443 | while (i != NULL) | |
13444 | { | |
13445 | if (i->pspace == pspace) | |
13446 | { | |
13447 | *i_link = i->next; | |
13448 | i->next = NULL; | |
13449 | hoisted->next = i; | |
13450 | hoisted = i; | |
13451 | } | |
13452 | else | |
13453 | i_link = &i->next; | |
13454 | i = *i_link; | |
13455 | } | |
13456 | ||
13457 | return head.next; | |
13458 | } | |
13459 | ||
13460 | /* Create new breakpoint locations for B (a hardware or software | |
13461 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13462 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13463 | FILTER_PSPACE. Locations of other program spaces are left | |
13464 | untouched. */ | |
f1310107 | 13465 | |
0e30163f | 13466 | void |
0d381245 | 13467 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13468 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13469 | gdb::array_view<const symtab_and_line> sals, |
13470 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13471 | { |
c2f4122d | 13472 | struct bp_location *existing_locations; |
0d381245 | 13473 | |
6c5b2ebe | 13474 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13475 | { |
13476 | /* Ranged breakpoints have only one start location and one end | |
13477 | location. */ | |
13478 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13479 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13480 | "multiple locations found\n"), | |
13481 | b->number); | |
13482 | return; | |
13483 | } | |
f1310107 | 13484 | |
4a64f543 MS |
13485 | /* If there's no new locations, and all existing locations are |
13486 | pending, don't do anything. This optimizes the common case where | |
13487 | all locations are in the same shared library, that was unloaded. | |
13488 | We'd like to retain the location, so that when the library is | |
13489 | loaded again, we don't loose the enabled/disabled status of the | |
13490 | individual locations. */ | |
6c5b2ebe | 13491 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13492 | return; |
13493 | ||
c2f4122d | 13494 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13495 | |
6c5b2ebe | 13496 | for (const auto &sal : sals) |
fe3f5fa8 | 13497 | { |
f8eba3c6 TT |
13498 | struct bp_location *new_loc; |
13499 | ||
6c5b2ebe | 13500 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13501 | |
6c5b2ebe | 13502 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13503 | |
0d381245 VP |
13504 | /* Reparse conditions, they might contain references to the |
13505 | old symtab. */ | |
13506 | if (b->cond_string != NULL) | |
13507 | { | |
bbc13ae3 | 13508 | const char *s; |
fe3f5fa8 | 13509 | |
0d381245 | 13510 | s = b->cond_string; |
a70b8144 | 13511 | try |
0d381245 | 13512 | { |
6c5b2ebe PA |
13513 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13514 | block_for_pc (sal.pc), | |
0d381245 VP |
13515 | 0); |
13516 | } | |
230d2906 | 13517 | catch (const gdb_exception_error &e) |
0d381245 | 13518 | { |
3e43a32a MS |
13519 | warning (_("failed to reevaluate condition " |
13520 | "for breakpoint %d: %s"), | |
3d6e9d23 | 13521 | b->number, e.what ()); |
0d381245 VP |
13522 | new_loc->enabled = 0; |
13523 | } | |
13524 | } | |
fe3f5fa8 | 13525 | |
6c5b2ebe | 13526 | if (!sals_end.empty ()) |
f1310107 | 13527 | { |
6c5b2ebe | 13528 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13529 | |
6c5b2ebe | 13530 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13531 | } |
0d381245 | 13532 | } |
fe3f5fa8 | 13533 | |
4a64f543 MS |
13534 | /* If possible, carry over 'disable' status from existing |
13535 | breakpoints. */ | |
0d381245 VP |
13536 | { |
13537 | struct bp_location *e = existing_locations; | |
776592bf DE |
13538 | /* If there are multiple breakpoints with the same function name, |
13539 | e.g. for inline functions, comparing function names won't work. | |
13540 | Instead compare pc addresses; this is just a heuristic as things | |
13541 | may have moved, but in practice it gives the correct answer | |
13542 | often enough until a better solution is found. */ | |
13543 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13544 | ||
0d381245 VP |
13545 | for (; e; e = e->next) |
13546 | { | |
13547 | if (!e->enabled && e->function_name) | |
13548 | { | |
13549 | struct bp_location *l = b->loc; | |
776592bf DE |
13550 | if (have_ambiguous_names) |
13551 | { | |
13552 | for (; l; l = l->next) | |
f1310107 | 13553 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13554 | { |
13555 | l->enabled = 0; | |
13556 | break; | |
13557 | } | |
13558 | } | |
13559 | else | |
13560 | { | |
13561 | for (; l; l = l->next) | |
13562 | if (l->function_name | |
13563 | && strcmp (e->function_name, l->function_name) == 0) | |
13564 | { | |
13565 | l->enabled = 0; | |
13566 | break; | |
13567 | } | |
13568 | } | |
0d381245 VP |
13569 | } |
13570 | } | |
13571 | } | |
fe3f5fa8 | 13572 | |
8d3788bd | 13573 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13574 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13575 | } |
13576 | ||
f00aae0f | 13577 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13578 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13579 | ||
6c5b2ebe | 13580 | static std::vector<symtab_and_line> |
f00aae0f | 13581 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13582 | struct program_space *search_pspace, int *found) |
ef23e705 | 13583 | { |
cc06b668 | 13584 | struct gdb_exception exception; |
ef23e705 | 13585 | |
983af33b | 13586 | gdb_assert (b->ops != NULL); |
ef23e705 | 13587 | |
6c5b2ebe PA |
13588 | std::vector<symtab_and_line> sals; |
13589 | ||
a70b8144 | 13590 | try |
ef23e705 | 13591 | { |
6c5b2ebe | 13592 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13593 | } |
94aeb44b | 13594 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13595 | { |
13596 | int not_found_and_ok = 0; | |
492d29ea | 13597 | |
ef23e705 TJB |
13598 | /* For pending breakpoints, it's expected that parsing will |
13599 | fail until the right shared library is loaded. User has | |
13600 | already told to create pending breakpoints and don't need | |
13601 | extra messages. If breakpoint is in bp_shlib_disabled | |
13602 | state, then user already saw the message about that | |
13603 | breakpoint being disabled, and don't want to see more | |
13604 | errors. */ | |
58438ac1 | 13605 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13606 | && (b->condition_not_parsed |
13607 | || (b->loc != NULL | |
13608 | && search_pspace != NULL | |
13609 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13610 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13611 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13612 | || b->enable_state == bp_disabled)) |
13613 | not_found_and_ok = 1; | |
13614 | ||
13615 | if (!not_found_and_ok) | |
13616 | { | |
13617 | /* We surely don't want to warn about the same breakpoint | |
13618 | 10 times. One solution, implemented here, is disable | |
13619 | the breakpoint on error. Another solution would be to | |
13620 | have separate 'warning emitted' flag. Since this | |
13621 | happens only when a binary has changed, I don't know | |
13622 | which approach is better. */ | |
13623 | b->enable_state = bp_disabled; | |
eedc3f4f | 13624 | throw; |
ef23e705 | 13625 | } |
94aeb44b TT |
13626 | |
13627 | exception = std::move (e); | |
ef23e705 TJB |
13628 | } |
13629 | ||
492d29ea | 13630 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13631 | { |
6c5b2ebe PA |
13632 | for (auto &sal : sals) |
13633 | resolve_sal_pc (&sal); | |
f00aae0f | 13634 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13635 | { |
ed1d1739 KS |
13636 | char *cond_string, *extra_string; |
13637 | int thread, task; | |
ef23e705 | 13638 | |
6c5b2ebe | 13639 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13640 | &cond_string, &thread, &task, |
13641 | &extra_string); | |
f00aae0f | 13642 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13643 | if (cond_string) |
13644 | b->cond_string = cond_string; | |
13645 | b->thread = thread; | |
13646 | b->task = task; | |
e7e0cddf | 13647 | if (extra_string) |
f00aae0f KS |
13648 | { |
13649 | xfree (b->extra_string); | |
13650 | b->extra_string = extra_string; | |
13651 | } | |
ef23e705 TJB |
13652 | b->condition_not_parsed = 0; |
13653 | } | |
13654 | ||
983af33b | 13655 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13656 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13657 | |
58438ac1 TT |
13658 | *found = 1; |
13659 | } | |
13660 | else | |
13661 | *found = 0; | |
ef23e705 TJB |
13662 | |
13663 | return sals; | |
13664 | } | |
13665 | ||
348d480f PA |
13666 | /* The default re_set method, for typical hardware or software |
13667 | breakpoints. Reevaluate the breakpoint and recreate its | |
13668 | locations. */ | |
13669 | ||
13670 | static void | |
28010a5d | 13671 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13672 | { |
c2f4122d | 13673 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13674 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13675 | |
6c5b2ebe PA |
13676 | int found; |
13677 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13678 | filter_pspace, &found); | |
ef23e705 | 13679 | if (found) |
6c5b2ebe | 13680 | expanded = std::move (sals); |
ef23e705 | 13681 | |
f00aae0f | 13682 | if (b->location_range_end != NULL) |
f1310107 | 13683 | { |
6c5b2ebe PA |
13684 | std::vector<symtab_and_line> sals_end |
13685 | = location_to_sals (b, b->location_range_end.get (), | |
13686 | filter_pspace, &found); | |
f1310107 | 13687 | if (found) |
6c5b2ebe | 13688 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13689 | } |
13690 | ||
c2f4122d | 13691 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13692 | } |
13693 | ||
983af33b SDJ |
13694 | /* Default method for creating SALs from an address string. It basically |
13695 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13696 | ||
13697 | static void | |
f00aae0f KS |
13698 | create_sals_from_location_default (const struct event_location *location, |
13699 | struct linespec_result *canonical, | |
13700 | enum bptype type_wanted) | |
983af33b | 13701 | { |
f00aae0f | 13702 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13703 | } |
13704 | ||
13705 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13706 | function for the `create_breakpoints_sal' method of | |
13707 | breakpoint_ops. */ | |
13708 | ||
13709 | static void | |
13710 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13711 | struct linespec_result *canonical, | |
e1e01040 PA |
13712 | gdb::unique_xmalloc_ptr<char> cond_string, |
13713 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13714 | enum bptype type_wanted, |
13715 | enum bpdisp disposition, | |
13716 | int thread, | |
13717 | int task, int ignore_count, | |
13718 | const struct breakpoint_ops *ops, | |
13719 | int from_tty, int enabled, | |
44f238bb | 13720 | int internal, unsigned flags) |
983af33b | 13721 | { |
e1e01040 PA |
13722 | create_breakpoints_sal (gdbarch, canonical, |
13723 | std::move (cond_string), | |
13724 | std::move (extra_string), | |
983af33b SDJ |
13725 | type_wanted, disposition, |
13726 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13727 | enabled, internal, flags); |
983af33b SDJ |
13728 | } |
13729 | ||
13730 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13731 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13732 | |
6c5b2ebe | 13733 | static std::vector<symtab_and_line> |
f00aae0f KS |
13734 | decode_location_default (struct breakpoint *b, |
13735 | const struct event_location *location, | |
6c5b2ebe | 13736 | struct program_space *search_pspace) |
983af33b SDJ |
13737 | { |
13738 | struct linespec_result canonical; | |
13739 | ||
c2f4122d | 13740 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13741 | (struct symtab *) NULL, 0, |
13742 | &canonical, multiple_symbols_all, | |
13743 | b->filter); | |
13744 | ||
13745 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13746 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13747 | |
6c5b2ebe | 13748 | if (!canonical.lsals.empty ()) |
983af33b | 13749 | { |
6c5b2ebe PA |
13750 | const linespec_sals &lsal = canonical.lsals[0]; |
13751 | return std::move (lsal.sals); | |
983af33b | 13752 | } |
6c5b2ebe | 13753 | return {}; |
983af33b SDJ |
13754 | } |
13755 | ||
bf469271 | 13756 | /* Reset a breakpoint. */ |
c906108c | 13757 | |
bf469271 PA |
13758 | static void |
13759 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13760 | { |
fdf44873 TT |
13761 | input_radix = b->input_radix; |
13762 | set_language (b->language); | |
c906108c | 13763 | |
348d480f | 13764 | b->ops->re_set (b); |
c906108c SS |
13765 | } |
13766 | ||
c2f4122d PA |
13767 | /* Re-set breakpoint locations for the current program space. |
13768 | Locations bound to other program spaces are left untouched. */ | |
13769 | ||
c906108c | 13770 | void |
69de3c6a | 13771 | breakpoint_re_set (void) |
c906108c | 13772 | { |
35df4500 | 13773 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13774 | |
c5aa993b | 13775 | { |
fdf44873 TT |
13776 | scoped_restore_current_language save_language; |
13777 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13778 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13779 | |
8e817061 JB |
13780 | /* breakpoint_re_set_one sets the current_language to the language |
13781 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13782 | before re-evaluating the breakpoint's location. This change can | |
13783 | unfortunately get undone by accident if the language_mode is set | |
13784 | to auto, and we either switch frames, or more likely in this context, | |
13785 | we select the current frame. | |
13786 | ||
13787 | We prevent this by temporarily turning the language_mode to | |
13788 | language_mode_manual. We restore it once all breakpoints | |
13789 | have been reset. */ | |
13790 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13791 | language_mode = language_mode_manual; | |
13792 | ||
5ed8105e PA |
13793 | /* Note: we must not try to insert locations until after all |
13794 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13795 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13796 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13797 | |
5ed8105e PA |
13798 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13799 | { | |
a70b8144 | 13800 | try |
bf469271 PA |
13801 | { |
13802 | breakpoint_re_set_one (b); | |
13803 | } | |
230d2906 | 13804 | catch (const gdb_exception &ex) |
bf469271 PA |
13805 | { |
13806 | exception_fprintf (gdb_stderr, ex, | |
13807 | "Error in re-setting breakpoint %d: ", | |
13808 | b->number); | |
13809 | } | |
5ed8105e | 13810 | } |
5ed8105e PA |
13811 | |
13812 | jit_breakpoint_re_set (); | |
13813 | } | |
6c95b8df | 13814 | |
af02033e PP |
13815 | create_overlay_event_breakpoint (); |
13816 | create_longjmp_master_breakpoint (); | |
13817 | create_std_terminate_master_breakpoint (); | |
186c406b | 13818 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13819 | |
13820 | /* Now we can insert. */ | |
13821 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13822 | } |
13823 | \f | |
c906108c SS |
13824 | /* Reset the thread number of this breakpoint: |
13825 | ||
13826 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13827 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13828 | void |
fba45db2 | 13829 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13830 | { |
13831 | if (b->thread != -1) | |
13832 | { | |
00431a78 | 13833 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13834 | |
13835 | /* We're being called after following a fork. The new fork is | |
13836 | selected as current, and unless this was a vfork will have a | |
13837 | different program space from the original thread. Reset that | |
13838 | as well. */ | |
13839 | b->loc->pspace = current_program_space; | |
c906108c SS |
13840 | } |
13841 | } | |
13842 | ||
03ac34d5 MS |
13843 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13844 | If from_tty is nonzero, it prints a message to that effect, | |
13845 | which ends with a period (no newline). */ | |
13846 | ||
c906108c | 13847 | void |
fba45db2 | 13848 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13849 | { |
52f0bd74 | 13850 | struct breakpoint *b; |
c906108c SS |
13851 | |
13852 | if (count < 0) | |
13853 | count = 0; | |
13854 | ||
13855 | ALL_BREAKPOINTS (b) | |
13856 | if (b->number == bptnum) | |
c5aa993b | 13857 | { |
d77f58be SS |
13858 | if (is_tracepoint (b)) |
13859 | { | |
13860 | if (from_tty && count != 0) | |
13861 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13862 | bptnum); | |
13863 | return; | |
13864 | } | |
13865 | ||
c5aa993b | 13866 | b->ignore_count = count; |
221ea385 KS |
13867 | if (from_tty) |
13868 | { | |
13869 | if (count == 0) | |
3e43a32a MS |
13870 | printf_filtered (_("Will stop next time " |
13871 | "breakpoint %d is reached."), | |
221ea385 KS |
13872 | bptnum); |
13873 | else if (count == 1) | |
a3f17187 | 13874 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13875 | bptnum); |
13876 | else | |
3e43a32a MS |
13877 | printf_filtered (_("Will ignore next %d " |
13878 | "crossings of breakpoint %d."), | |
221ea385 KS |
13879 | count, bptnum); |
13880 | } | |
76727919 | 13881 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13882 | return; |
13883 | } | |
c906108c | 13884 | |
8a3fe4f8 | 13885 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13886 | } |
13887 | ||
c906108c SS |
13888 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13889 | ||
13890 | static void | |
0b39b52e | 13891 | ignore_command (const char *args, int from_tty) |
c906108c | 13892 | { |
0b39b52e | 13893 | const char *p = args; |
52f0bd74 | 13894 | int num; |
c906108c SS |
13895 | |
13896 | if (p == 0) | |
e2e0b3e5 | 13897 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13898 | |
c906108c | 13899 | num = get_number (&p); |
5c44784c | 13900 | if (num == 0) |
8a3fe4f8 | 13901 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13902 | if (*p == 0) |
8a3fe4f8 | 13903 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13904 | |
13905 | set_ignore_count (num, | |
13906 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13907 | from_tty); | |
221ea385 KS |
13908 | if (from_tty) |
13909 | printf_filtered ("\n"); | |
c906108c SS |
13910 | } |
13911 | \f | |
d0fe4701 XR |
13912 | |
13913 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13914 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13915 | |
13916 | static void | |
d0fe4701 XR |
13917 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13918 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13919 | { |
d0fe4701 XR |
13920 | if (bp_num_range.first == 0) |
13921 | { | |
13922 | warning (_("bad breakpoint number at or near '%d'"), | |
13923 | bp_num_range.first); | |
13924 | } | |
13925 | else | |
c906108c | 13926 | { |
d0fe4701 | 13927 | struct breakpoint *b, *tmp; |
197f0a60 | 13928 | |
d0fe4701 | 13929 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13930 | { |
d0fe4701 XR |
13931 | bool match = false; |
13932 | ||
5c44784c | 13933 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13934 | if (b->number == i) |
5c44784c | 13935 | { |
bfd28288 | 13936 | match = true; |
48649e1b | 13937 | function (b); |
11cf8741 | 13938 | break; |
5c44784c | 13939 | } |
bfd28288 | 13940 | if (!match) |
d0fe4701 | 13941 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13942 | } |
c906108c SS |
13943 | } |
13944 | } | |
13945 | ||
d0fe4701 XR |
13946 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13947 | ARGS. */ | |
13948 | ||
13949 | static void | |
13950 | map_breakpoint_numbers (const char *args, | |
13951 | gdb::function_view<void (breakpoint *)> function) | |
13952 | { | |
13953 | if (args == NULL || *args == '\0') | |
13954 | error_no_arg (_("one or more breakpoint numbers")); | |
13955 | ||
13956 | number_or_range_parser parser (args); | |
13957 | ||
13958 | while (!parser.finished ()) | |
13959 | { | |
13960 | int num = parser.get_number (); | |
13961 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13962 | } | |
13963 | } | |
13964 | ||
13965 | /* Return the breakpoint location structure corresponding to the | |
13966 | BP_NUM and LOC_NUM values. */ | |
13967 | ||
0d381245 | 13968 | static struct bp_location * |
d0fe4701 | 13969 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13970 | { |
0d381245 | 13971 | struct breakpoint *b; |
0d381245 VP |
13972 | |
13973 | ALL_BREAKPOINTS (b) | |
13974 | if (b->number == bp_num) | |
13975 | { | |
13976 | break; | |
13977 | } | |
13978 | ||
13979 | if (!b || b->number != bp_num) | |
d0fe4701 | 13980 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13981 | |
0d381245 | 13982 | if (loc_num == 0) |
d0fe4701 | 13983 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13984 | |
d0fe4701 XR |
13985 | int n = 0; |
13986 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
13987 | if (++n == loc_num) | |
13988 | return loc; | |
13989 | ||
13990 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13991 | } |
13992 | ||
95e95a6d PA |
13993 | /* Modes of operation for extract_bp_num. */ |
13994 | enum class extract_bp_kind | |
13995 | { | |
13996 | /* Extracting a breakpoint number. */ | |
13997 | bp, | |
13998 | ||
13999 | /* Extracting a location number. */ | |
14000 | loc, | |
14001 | }; | |
14002 | ||
14003 | /* Extract a breakpoint or location number (as determined by KIND) | |
14004 | from the string starting at START. TRAILER is a character which | |
14005 | can be found after the number. If you don't want a trailer, use | |
14006 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14007 | string. This always returns a positive integer. */ | |
14008 | ||
14009 | static int | |
14010 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14011 | int trailer, const char **end_out = NULL) | |
14012 | { | |
14013 | const char *end = start; | |
14014 | int num = get_number_trailer (&end, trailer); | |
14015 | if (num < 0) | |
14016 | error (kind == extract_bp_kind::bp | |
14017 | ? _("Negative breakpoint number '%.*s'") | |
14018 | : _("Negative breakpoint location number '%.*s'"), | |
14019 | int (end - start), start); | |
14020 | if (num == 0) | |
14021 | error (kind == extract_bp_kind::bp | |
14022 | ? _("Bad breakpoint number '%.*s'") | |
14023 | : _("Bad breakpoint location number '%.*s'"), | |
14024 | int (end - start), start); | |
14025 | ||
14026 | if (end_out != NULL) | |
14027 | *end_out = end; | |
14028 | return num; | |
14029 | } | |
14030 | ||
14031 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14032 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14033 | representing the (inclusive) range. The returned pair's elements | |
14034 | are always positive integers. */ | |
14035 | ||
14036 | static std::pair<int, int> | |
14037 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14038 | const std::string &arg, | |
14039 | std::string::size_type arg_offset) | |
14040 | { | |
14041 | std::pair<int, int> range; | |
14042 | const char *bp_loc = &arg[arg_offset]; | |
14043 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14044 | if (dash != std::string::npos) | |
14045 | { | |
14046 | /* bp_loc is a range (x-z). */ | |
14047 | if (arg.length () == dash + 1) | |
14048 | error (kind == extract_bp_kind::bp | |
14049 | ? _("Bad breakpoint number at or near: '%s'") | |
14050 | : _("Bad breakpoint location number at or near: '%s'"), | |
14051 | bp_loc); | |
14052 | ||
14053 | const char *end; | |
14054 | const char *start_first = bp_loc; | |
14055 | const char *start_second = &arg[dash + 1]; | |
14056 | range.first = extract_bp_num (kind, start_first, '-'); | |
14057 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14058 | ||
14059 | if (range.first > range.second) | |
14060 | error (kind == extract_bp_kind::bp | |
14061 | ? _("Inverted breakpoint range at '%.*s'") | |
14062 | : _("Inverted breakpoint location range at '%.*s'"), | |
14063 | int (end - start_first), start_first); | |
14064 | } | |
14065 | else | |
14066 | { | |
14067 | /* bp_loc is a single value. */ | |
14068 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14069 | range.second = range.first; | |
14070 | } | |
14071 | return range; | |
14072 | } | |
14073 | ||
d0fe4701 XR |
14074 | /* Extract the breakpoint/location range specified by ARG. Returns |
14075 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14076 | BP_LOC_RANGE. | |
14077 | ||
14078 | ARG may be in any of the following forms: | |
14079 | ||
14080 | x where 'x' is a breakpoint number. | |
14081 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14082 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14083 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14084 | location number range. | |
14085 | */ | |
14086 | ||
cc638e86 | 14087 | static void |
d0fe4701 XR |
14088 | extract_bp_number_and_location (const std::string &arg, |
14089 | std::pair<int, int> &bp_num_range, | |
14090 | std::pair<int, int> &bp_loc_range) | |
14091 | { | |
14092 | std::string::size_type dot = arg.find ('.'); | |
14093 | ||
14094 | if (dot != std::string::npos) | |
14095 | { | |
14096 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14097 | ||
14098 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14099 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14100 | |
95e95a6d PA |
14101 | bp_num_range.first |
14102 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14103 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14104 | |
95e95a6d PA |
14105 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14106 | arg, dot + 1); | |
d0fe4701 XR |
14107 | } |
14108 | else | |
14109 | { | |
14110 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14111 | |
95e95a6d | 14112 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14113 | bp_loc_range.first = 0; |
14114 | bp_loc_range.second = 0; | |
14115 | } | |
d0fe4701 XR |
14116 | } |
14117 | ||
14118 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14119 | specifies whether to enable or disable. */ | |
14120 | ||
14121 | static void | |
14122 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14123 | { | |
14124 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14125 | if (loc != NULL) | |
14126 | { | |
14127 | if (loc->enabled != enable) | |
14128 | { | |
14129 | loc->enabled = enable; | |
14130 | mark_breakpoint_location_modified (loc); | |
14131 | } | |
14132 | if (target_supports_enable_disable_tracepoint () | |
14133 | && current_trace_status ()->running && loc->owner | |
14134 | && is_tracepoint (loc->owner)) | |
14135 | target_disable_tracepoint (loc); | |
14136 | } | |
14137 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14138 | |
14139 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14140 | } |
14141 | ||
14142 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14143 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14144 | (inclusive) range of location numbers of that breakpoint to | |
14145 | enable/disable. ENABLE specifies whether to enable or disable the | |
14146 | location. */ | |
14147 | ||
14148 | static void | |
14149 | enable_disable_breakpoint_location_range (int bp_num, | |
14150 | std::pair<int, int> &bp_loc_range, | |
14151 | bool enable) | |
14152 | { | |
14153 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14154 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14155 | } | |
0d381245 | 14156 | |
1900040c MS |
14157 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14158 | If from_tty is nonzero, it prints a message to that effect, | |
14159 | which ends with a period (no newline). */ | |
14160 | ||
c906108c | 14161 | void |
fba45db2 | 14162 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14163 | { |
14164 | /* Never disable a watchpoint scope breakpoint; we want to | |
14165 | hit them when we leave scope so we can delete both the | |
14166 | watchpoint and its scope breakpoint at that time. */ | |
14167 | if (bpt->type == bp_watchpoint_scope) | |
14168 | return; | |
14169 | ||
b5de0fa7 | 14170 | bpt->enable_state = bp_disabled; |
c906108c | 14171 | |
b775012e LM |
14172 | /* Mark breakpoint locations modified. */ |
14173 | mark_breakpoint_modified (bpt); | |
14174 | ||
d248b706 KY |
14175 | if (target_supports_enable_disable_tracepoint () |
14176 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14177 | { | |
14178 | struct bp_location *location; | |
14179 | ||
14180 | for (location = bpt->loc; location; location = location->next) | |
14181 | target_disable_tracepoint (location); | |
14182 | } | |
14183 | ||
44702360 | 14184 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14185 | |
76727919 | 14186 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14187 | } |
14188 | ||
d0fe4701 XR |
14189 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14190 | specified in ARGS. ARGS may be in any of the formats handled by | |
14191 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14192 | or disable the breakpoints/locations. */ | |
14193 | ||
c906108c | 14194 | static void |
d0fe4701 | 14195 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14196 | { |
c906108c | 14197 | if (args == 0) |
46c6471b PA |
14198 | { |
14199 | struct breakpoint *bpt; | |
14200 | ||
14201 | ALL_BREAKPOINTS (bpt) | |
14202 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14203 | { |
14204 | if (enable) | |
14205 | enable_breakpoint (bpt); | |
14206 | else | |
14207 | disable_breakpoint (bpt); | |
14208 | } | |
46c6471b | 14209 | } |
9eaabc75 | 14210 | else |
0d381245 | 14211 | { |
cb791d59 | 14212 | std::string num = extract_arg (&args); |
9eaabc75 | 14213 | |
cb791d59 | 14214 | while (!num.empty ()) |
d248b706 | 14215 | { |
d0fe4701 | 14216 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14217 | |
cc638e86 PA |
14218 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14219 | ||
14220 | if (bp_loc_range.first == bp_loc_range.second | |
14221 | && bp_loc_range.first == 0) | |
d0fe4701 | 14222 | { |
cc638e86 PA |
14223 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14224 | map_breakpoint_number_range (bp_num_range, | |
14225 | enable | |
14226 | ? enable_breakpoint | |
14227 | : disable_breakpoint); | |
14228 | } | |
14229 | else | |
14230 | { | |
14231 | /* Handle breakpoint ids with formats 'x.y' or | |
14232 | 'x.y-z'. */ | |
14233 | enable_disable_breakpoint_location_range | |
14234 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14235 | } |
9eaabc75 | 14236 | num = extract_arg (&args); |
d248b706 | 14237 | } |
0d381245 | 14238 | } |
c906108c SS |
14239 | } |
14240 | ||
d0fe4701 XR |
14241 | /* The disable command disables the specified breakpoints/locations |
14242 | (or all defined breakpoints) so they're no longer effective in | |
14243 | stopping the inferior. ARGS may be in any of the forms defined in | |
14244 | extract_bp_number_and_location. */ | |
14245 | ||
14246 | static void | |
14247 | disable_command (const char *args, int from_tty) | |
14248 | { | |
14249 | enable_disable_command (args, from_tty, false); | |
14250 | } | |
14251 | ||
c906108c | 14252 | static void |
816338b5 SS |
14253 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14254 | int count) | |
c906108c | 14255 | { |
afe38095 | 14256 | int target_resources_ok; |
c906108c SS |
14257 | |
14258 | if (bpt->type == bp_hardware_breakpoint) | |
14259 | { | |
14260 | int i; | |
c5aa993b | 14261 | i = hw_breakpoint_used_count (); |
53a5351d | 14262 | target_resources_ok = |
d92524f1 | 14263 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14264 | i + 1, 0); |
c906108c | 14265 | if (target_resources_ok == 0) |
8a3fe4f8 | 14266 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14267 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14268 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14269 | } |
14270 | ||
cc60f2e3 | 14271 | if (is_watchpoint (bpt)) |
c906108c | 14272 | { |
d07205c2 | 14273 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14274 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14275 | |
a70b8144 | 14276 | try |
c906108c | 14277 | { |
3a5c3e22 PA |
14278 | struct watchpoint *w = (struct watchpoint *) bpt; |
14279 | ||
1e718ff1 TJB |
14280 | orig_enable_state = bpt->enable_state; |
14281 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14282 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14283 | } |
230d2906 | 14284 | catch (const gdb_exception &e) |
c5aa993b | 14285 | { |
1e718ff1 | 14286 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14287 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14288 | bpt->number); | |
14289 | return; | |
c5aa993b | 14290 | } |
c906108c | 14291 | } |
0101ce28 | 14292 | |
b775012e LM |
14293 | bpt->enable_state = bp_enabled; |
14294 | ||
14295 | /* Mark breakpoint locations modified. */ | |
14296 | mark_breakpoint_modified (bpt); | |
14297 | ||
d248b706 KY |
14298 | if (target_supports_enable_disable_tracepoint () |
14299 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14300 | { | |
14301 | struct bp_location *location; | |
14302 | ||
14303 | for (location = bpt->loc; location; location = location->next) | |
14304 | target_enable_tracepoint (location); | |
14305 | } | |
14306 | ||
b4c291bb | 14307 | bpt->disposition = disposition; |
816338b5 | 14308 | bpt->enable_count = count; |
44702360 | 14309 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14310 | |
76727919 | 14311 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14312 | } |
14313 | ||
fe3f5fa8 | 14314 | |
c906108c | 14315 | void |
fba45db2 | 14316 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14317 | { |
816338b5 | 14318 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14319 | } |
14320 | ||
d0fe4701 XR |
14321 | /* The enable command enables the specified breakpoints/locations (or |
14322 | all defined breakpoints) so they once again become (or continue to | |
14323 | be) effective in stopping the inferior. ARGS may be in any of the | |
14324 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14325 | |
c906108c | 14326 | static void |
981a3fb3 | 14327 | enable_command (const char *args, int from_tty) |
c906108c | 14328 | { |
d0fe4701 | 14329 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14330 | } |
14331 | ||
c906108c | 14332 | static void |
4495129a | 14333 | enable_once_command (const char *args, int from_tty) |
c906108c | 14334 | { |
48649e1b TT |
14335 | map_breakpoint_numbers |
14336 | (args, [&] (breakpoint *b) | |
14337 | { | |
14338 | iterate_over_related_breakpoints | |
14339 | (b, [&] (breakpoint *bpt) | |
14340 | { | |
14341 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14342 | }); | |
14343 | }); | |
816338b5 SS |
14344 | } |
14345 | ||
14346 | static void | |
4495129a | 14347 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14348 | { |
b9d61307 SM |
14349 | int count; |
14350 | ||
14351 | if (args == NULL) | |
14352 | error_no_arg (_("hit count")); | |
14353 | ||
14354 | count = get_number (&args); | |
816338b5 | 14355 | |
48649e1b TT |
14356 | map_breakpoint_numbers |
14357 | (args, [&] (breakpoint *b) | |
14358 | { | |
14359 | iterate_over_related_breakpoints | |
14360 | (b, [&] (breakpoint *bpt) | |
14361 | { | |
14362 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14363 | }); | |
14364 | }); | |
c906108c SS |
14365 | } |
14366 | ||
c906108c | 14367 | static void |
4495129a | 14368 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14369 | { |
48649e1b TT |
14370 | map_breakpoint_numbers |
14371 | (args, [&] (breakpoint *b) | |
14372 | { | |
14373 | iterate_over_related_breakpoints | |
14374 | (b, [&] (breakpoint *bpt) | |
14375 | { | |
14376 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14377 | }); | |
14378 | }); | |
c906108c SS |
14379 | } |
14380 | \f | |
fa8d40ab | 14381 | static void |
981a3fb3 | 14382 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14383 | { |
14384 | } | |
14385 | ||
14386 | static void | |
981a3fb3 | 14387 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14388 | { |
14389 | } | |
14390 | ||
1f3b5d1b PP |
14391 | /* Invalidate last known value of any hardware watchpoint if |
14392 | the memory which that value represents has been written to by | |
14393 | GDB itself. */ | |
14394 | ||
14395 | static void | |
8de0566d YQ |
14396 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14397 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14398 | const bfd_byte *data) |
14399 | { | |
14400 | struct breakpoint *bp; | |
14401 | ||
14402 | ALL_BREAKPOINTS (bp) | |
14403 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14404 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14405 | { |
3a5c3e22 | 14406 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14407 | |
850645cf | 14408 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14409 | { |
14410 | struct bp_location *loc; | |
14411 | ||
14412 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14413 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14414 | && loc->address + loc->length > addr | |
14415 | && addr + len > loc->address) | |
14416 | { | |
3a5c3e22 PA |
14417 | wp->val = NULL; |
14418 | wp->val_valid = 0; | |
14419 | } | |
14420 | } | |
1f3b5d1b PP |
14421 | } |
14422 | } | |
14423 | ||
8181d85f DJ |
14424 | /* Create and insert a breakpoint for software single step. */ |
14425 | ||
14426 | void | |
6c95b8df | 14427 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14428 | const address_space *aspace, |
4a64f543 | 14429 | CORE_ADDR next_pc) |
8181d85f | 14430 | { |
7c16b83e PA |
14431 | struct thread_info *tp = inferior_thread (); |
14432 | struct symtab_and_line sal; | |
14433 | CORE_ADDR pc = next_pc; | |
8181d85f | 14434 | |
34b7e8a6 PA |
14435 | if (tp->control.single_step_breakpoints == NULL) |
14436 | { | |
14437 | tp->control.single_step_breakpoints | |
5d5658a1 | 14438 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14439 | } |
8181d85f | 14440 | |
7c16b83e PA |
14441 | sal = find_pc_line (pc, 0); |
14442 | sal.pc = pc; | |
14443 | sal.section = find_pc_overlay (pc); | |
14444 | sal.explicit_pc = 1; | |
34b7e8a6 | 14445 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14446 | |
7c16b83e | 14447 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14448 | } |
14449 | ||
93f9a11f YQ |
14450 | /* Insert single step breakpoints according to the current state. */ |
14451 | ||
14452 | int | |
14453 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14454 | { | |
f5ea389a | 14455 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14456 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14457 | |
f5ea389a | 14458 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14459 | |
a0ff9e1a | 14460 | if (!next_pcs.empty ()) |
93f9a11f | 14461 | { |
f5ea389a | 14462 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14463 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14464 | |
a0ff9e1a | 14465 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14466 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14467 | ||
93f9a11f YQ |
14468 | return 1; |
14469 | } | |
14470 | else | |
14471 | return 0; | |
14472 | } | |
14473 | ||
34b7e8a6 | 14474 | /* See breakpoint.h. */ |
f02253f1 HZ |
14475 | |
14476 | int | |
7c16b83e | 14477 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14478 | const address_space *aspace, |
7c16b83e | 14479 | CORE_ADDR pc) |
1aafd4da | 14480 | { |
7c16b83e | 14481 | struct bp_location *loc; |
1aafd4da | 14482 | |
7c16b83e PA |
14483 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14484 | if (loc->inserted | |
14485 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14486 | return 1; | |
1aafd4da | 14487 | |
7c16b83e | 14488 | return 0; |
ef370185 JB |
14489 | } |
14490 | ||
14491 | /* Check whether a software single-step breakpoint is inserted at | |
14492 | PC. */ | |
14493 | ||
14494 | int | |
accd0bcd | 14495 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14496 | CORE_ADDR pc) |
14497 | { | |
34b7e8a6 PA |
14498 | struct breakpoint *bpt; |
14499 | ||
14500 | ALL_BREAKPOINTS (bpt) | |
14501 | { | |
14502 | if (bpt->type == bp_single_step | |
14503 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14504 | return 1; | |
14505 | } | |
14506 | return 0; | |
1aafd4da UW |
14507 | } |
14508 | ||
1042e4c0 SS |
14509 | /* Tracepoint-specific operations. */ |
14510 | ||
14511 | /* Set tracepoint count to NUM. */ | |
14512 | static void | |
14513 | set_tracepoint_count (int num) | |
14514 | { | |
14515 | tracepoint_count = num; | |
4fa62494 | 14516 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14517 | } |
14518 | ||
70221824 | 14519 | static void |
0b39b52e | 14520 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14521 | { |
55aa24fb | 14522 | struct breakpoint_ops *ops; |
55aa24fb | 14523 | |
ffc2605c TT |
14524 | event_location_up location = string_to_event_location (&arg, |
14525 | current_language); | |
5b56227b | 14526 | if (location != NULL |
ffc2605c | 14527 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14528 | ops = &tracepoint_probe_breakpoint_ops; |
14529 | else | |
14530 | ops = &tracepoint_breakpoint_ops; | |
14531 | ||
558a9d82 | 14532 | create_breakpoint (get_current_arch (), |
ffc2605c | 14533 | location.get (), |
f00aae0f | 14534 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14535 | 0 /* tempflag */, |
14536 | bp_tracepoint /* type_wanted */, | |
14537 | 0 /* Ignore count */, | |
14538 | pending_break_support, | |
14539 | ops, | |
14540 | from_tty, | |
14541 | 1 /* enabled */, | |
14542 | 0 /* internal */, 0); | |
1042e4c0 SS |
14543 | } |
14544 | ||
70221824 | 14545 | static void |
0b39b52e | 14546 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14547 | { |
ffc2605c TT |
14548 | event_location_up location = string_to_event_location (&arg, |
14549 | current_language); | |
558a9d82 | 14550 | create_breakpoint (get_current_arch (), |
ffc2605c | 14551 | location.get (), |
f00aae0f | 14552 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14553 | 0 /* tempflag */, |
14554 | bp_fast_tracepoint /* type_wanted */, | |
14555 | 0 /* Ignore count */, | |
14556 | pending_break_support, | |
14557 | &tracepoint_breakpoint_ops, | |
14558 | from_tty, | |
14559 | 1 /* enabled */, | |
14560 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14561 | } |
14562 | ||
14563 | /* strace command implementation. Creates a static tracepoint. */ | |
14564 | ||
70221824 | 14565 | static void |
0b39b52e | 14566 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14567 | { |
983af33b | 14568 | struct breakpoint_ops *ops; |
ffc2605c | 14569 | event_location_up location; |
983af33b SDJ |
14570 | |
14571 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14572 | or with a normal static tracepoint. */ | |
61012eef | 14573 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14574 | { |
14575 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14576 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14577 | } |
983af33b | 14578 | else |
f00aae0f KS |
14579 | { |
14580 | ops = &tracepoint_breakpoint_ops; | |
14581 | location = string_to_event_location (&arg, current_language); | |
14582 | } | |
983af33b | 14583 | |
558a9d82 | 14584 | create_breakpoint (get_current_arch (), |
ffc2605c | 14585 | location.get (), |
f00aae0f | 14586 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14587 | 0 /* tempflag */, |
14588 | bp_static_tracepoint /* type_wanted */, | |
14589 | 0 /* Ignore count */, | |
14590 | pending_break_support, | |
14591 | ops, | |
14592 | from_tty, | |
14593 | 1 /* enabled */, | |
14594 | 0 /* internal */, 0); | |
7a697b8d SS |
14595 | } |
14596 | ||
409873ef SS |
14597 | /* Set up a fake reader function that gets command lines from a linked |
14598 | list that was acquired during tracepoint uploading. */ | |
14599 | ||
14600 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14601 | static int next_cmd; |
409873ef SS |
14602 | |
14603 | static char * | |
14604 | read_uploaded_action (void) | |
14605 | { | |
a18ba4e4 | 14606 | char *rslt = nullptr; |
409873ef | 14607 | |
a18ba4e4 SM |
14608 | if (next_cmd < this_utp->cmd_strings.size ()) |
14609 | { | |
67aa1f3c | 14610 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14611 | next_cmd++; |
14612 | } | |
409873ef SS |
14613 | |
14614 | return rslt; | |
14615 | } | |
14616 | ||
00bf0b85 SS |
14617 | /* Given information about a tracepoint as recorded on a target (which |
14618 | can be either a live system or a trace file), attempt to create an | |
14619 | equivalent GDB tracepoint. This is not a reliable process, since | |
14620 | the target does not necessarily have all the information used when | |
14621 | the tracepoint was originally defined. */ | |
14622 | ||
d9b3f62e | 14623 | struct tracepoint * |
00bf0b85 | 14624 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14625 | { |
f2fc3015 TT |
14626 | const char *addr_str; |
14627 | char small_buf[100]; | |
d9b3f62e | 14628 | struct tracepoint *tp; |
fd9b8c24 | 14629 | |
409873ef | 14630 | if (utp->at_string) |
67aa1f3c | 14631 | addr_str = utp->at_string.get (); |
409873ef SS |
14632 | else |
14633 | { | |
14634 | /* In the absence of a source location, fall back to raw | |
14635 | address. Since there is no way to confirm that the address | |
14636 | means the same thing as when the trace was started, warn the | |
14637 | user. */ | |
3e43a32a MS |
14638 | warning (_("Uploaded tracepoint %d has no " |
14639 | "source location, using raw address"), | |
409873ef | 14640 | utp->number); |
8c042590 | 14641 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14642 | addr_str = small_buf; |
14643 | } | |
14644 | ||
14645 | /* There's not much we can do with a sequence of bytecodes. */ | |
14646 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14647 | warning (_("Uploaded tracepoint %d condition " |
14648 | "has no source form, ignoring it"), | |
409873ef | 14649 | utp->number); |
d5551862 | 14650 | |
ffc2605c TT |
14651 | event_location_up location = string_to_event_location (&addr_str, |
14652 | current_language); | |
8cdf0e15 | 14653 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14654 | location.get (), |
67aa1f3c | 14655 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14656 | 0 /* parse cond/thread */, |
8cdf0e15 | 14657 | 0 /* tempflag */, |
0fb4aa4b | 14658 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14659 | 0 /* Ignore count */, |
14660 | pending_break_support, | |
348d480f | 14661 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14662 | 0 /* from_tty */, |
84f4c1fe | 14663 | utp->enabled /* enabled */, |
44f238bb PA |
14664 | 0 /* internal */, |
14665 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14666 | return NULL; |
fd9b8c24 | 14667 | |
409873ef | 14668 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14669 | tp = get_tracepoint (tracepoint_count); |
14670 | gdb_assert (tp != NULL); | |
d5551862 | 14671 | |
00bf0b85 SS |
14672 | if (utp->pass > 0) |
14673 | { | |
8c042590 | 14674 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14675 | tp->number); |
00bf0b85 | 14676 | |
409873ef | 14677 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14678 | } |
14679 | ||
409873ef SS |
14680 | /* If we have uploaded versions of the original commands, set up a |
14681 | special-purpose "reader" function and call the usual command line | |
14682 | reader, then pass the result to the breakpoint command-setting | |
14683 | function. */ | |
a18ba4e4 | 14684 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14685 | { |
12973681 | 14686 | counted_command_line cmd_list; |
00bf0b85 | 14687 | |
409873ef | 14688 | this_utp = utp; |
3149d8c1 | 14689 | next_cmd = 0; |
d5551862 | 14690 | |
60b3cef2 | 14691 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14692 | |
c1fc2657 | 14693 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14694 | } |
a18ba4e4 SM |
14695 | else if (!utp->actions.empty () |
14696 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14697 | warning (_("Uploaded tracepoint %d actions " |
14698 | "have no source form, ignoring them"), | |
409873ef | 14699 | utp->number); |
00bf0b85 | 14700 | |
f196051f | 14701 | /* Copy any status information that might be available. */ |
c1fc2657 | 14702 | tp->hit_count = utp->hit_count; |
f196051f SS |
14703 | tp->traceframe_usage = utp->traceframe_usage; |
14704 | ||
00bf0b85 | 14705 | return tp; |
d9b3f62e | 14706 | } |
00bf0b85 | 14707 | |
1042e4c0 SS |
14708 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14709 | omitted. */ | |
14710 | ||
14711 | static void | |
1d12d88f | 14712 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14713 | { |
79a45e25 | 14714 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14715 | int num_printed; |
1042e4c0 | 14716 | |
e5a67952 | 14717 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14718 | |
14719 | if (num_printed == 0) | |
1042e4c0 | 14720 | { |
e5a67952 | 14721 | if (args == NULL || *args == '\0') |
112e8700 | 14722 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14723 | else |
112e8700 | 14724 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14725 | } |
ad443146 SS |
14726 | |
14727 | default_collect_info (); | |
1042e4c0 SS |
14728 | } |
14729 | ||
4a64f543 | 14730 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14731 | Not supported by all targets. */ |
14732 | static void | |
5fed81ff | 14733 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14734 | { |
14735 | enable_command (args, from_tty); | |
14736 | } | |
14737 | ||
4a64f543 | 14738 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14739 | Not supported by all targets. */ |
14740 | static void | |
5fed81ff | 14741 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14742 | { |
14743 | disable_command (args, from_tty); | |
14744 | } | |
14745 | ||
4a64f543 | 14746 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14747 | static void |
4495129a | 14748 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14749 | { |
35df4500 | 14750 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14751 | |
14752 | dont_repeat (); | |
14753 | ||
14754 | if (arg == 0) | |
14755 | { | |
14756 | int breaks_to_delete = 0; | |
14757 | ||
14758 | /* Delete all breakpoints if no argument. | |
14759 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14760 | have to be deleted with an explicit breakpoint number |
14761 | argument. */ | |
1042e4c0 | 14762 | ALL_TRACEPOINTS (b) |
46c6471b | 14763 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14764 | { |
14765 | breaks_to_delete = 1; | |
14766 | break; | |
14767 | } | |
1042e4c0 SS |
14768 | |
14769 | /* Ask user only if there are some breakpoints to delete. */ | |
14770 | if (!from_tty | |
14771 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14772 | { | |
35df4500 | 14773 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14774 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14775 | delete_breakpoint (b); |
1042e4c0 SS |
14776 | } |
14777 | } | |
14778 | else | |
48649e1b | 14779 | map_breakpoint_numbers |
b926417a | 14780 | (arg, [&] (breakpoint *br) |
48649e1b | 14781 | { |
b926417a | 14782 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14783 | }); |
1042e4c0 SS |
14784 | } |
14785 | ||
197f0a60 TT |
14786 | /* Helper function for trace_pass_command. */ |
14787 | ||
14788 | static void | |
d9b3f62e | 14789 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14790 | { |
d9b3f62e | 14791 | tp->pass_count = count; |
76727919 | 14792 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14793 | if (from_tty) |
14794 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14795 | tp->number, count); |
197f0a60 TT |
14796 | } |
14797 | ||
1042e4c0 SS |
14798 | /* Set passcount for tracepoint. |
14799 | ||
14800 | First command argument is passcount, second is tracepoint number. | |
14801 | If tracepoint number omitted, apply to most recently defined. | |
14802 | Also accepts special argument "all". */ | |
14803 | ||
14804 | static void | |
0b39b52e | 14805 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14806 | { |
d9b3f62e | 14807 | struct tracepoint *t1; |
0b39b52e | 14808 | ULONGEST count; |
1042e4c0 SS |
14809 | |
14810 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14811 | error (_("passcount command requires an " |
14812 | "argument (count + optional TP num)")); | |
1042e4c0 | 14813 | |
0b39b52e | 14814 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14815 | |
529480d0 | 14816 | args = skip_spaces (args); |
1042e4c0 SS |
14817 | if (*args && strncasecmp (args, "all", 3) == 0) |
14818 | { | |
d9b3f62e PA |
14819 | struct breakpoint *b; |
14820 | ||
1042e4c0 | 14821 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14822 | if (*args) |
14823 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14824 | |
d9b3f62e | 14825 | ALL_TRACEPOINTS (b) |
197f0a60 | 14826 | { |
d9b3f62e | 14827 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14828 | trace_pass_set_count (t1, count, from_tty); |
14829 | } | |
14830 | } | |
14831 | else if (*args == '\0') | |
1042e4c0 | 14832 | { |
5fa1d40e | 14833 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14834 | if (t1) |
197f0a60 TT |
14835 | trace_pass_set_count (t1, count, from_tty); |
14836 | } | |
14837 | else | |
14838 | { | |
bfd28288 PA |
14839 | number_or_range_parser parser (args); |
14840 | while (!parser.finished ()) | |
1042e4c0 | 14841 | { |
bfd28288 | 14842 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14843 | if (t1) |
14844 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14845 | } |
14846 | } | |
1042e4c0 SS |
14847 | } |
14848 | ||
d9b3f62e | 14849 | struct tracepoint * |
1042e4c0 SS |
14850 | get_tracepoint (int num) |
14851 | { | |
14852 | struct breakpoint *t; | |
14853 | ||
14854 | ALL_TRACEPOINTS (t) | |
14855 | if (t->number == num) | |
d9b3f62e | 14856 | return (struct tracepoint *) t; |
1042e4c0 SS |
14857 | |
14858 | return NULL; | |
14859 | } | |
14860 | ||
d5551862 SS |
14861 | /* Find the tracepoint with the given target-side number (which may be |
14862 | different from the tracepoint number after disconnecting and | |
14863 | reconnecting). */ | |
14864 | ||
d9b3f62e | 14865 | struct tracepoint * |
d5551862 SS |
14866 | get_tracepoint_by_number_on_target (int num) |
14867 | { | |
d9b3f62e | 14868 | struct breakpoint *b; |
d5551862 | 14869 | |
d9b3f62e PA |
14870 | ALL_TRACEPOINTS (b) |
14871 | { | |
14872 | struct tracepoint *t = (struct tracepoint *) b; | |
14873 | ||
14874 | if (t->number_on_target == num) | |
14875 | return t; | |
14876 | } | |
d5551862 SS |
14877 | |
14878 | return NULL; | |
14879 | } | |
14880 | ||
1042e4c0 | 14881 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14882 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14883 | If the argument is missing, the most recent tracepoint |
14884 | (tracepoint_count) is returned. */ | |
14885 | ||
d9b3f62e | 14886 | struct tracepoint * |
0b39b52e | 14887 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14888 | number_or_range_parser *parser) |
1042e4c0 | 14889 | { |
1042e4c0 SS |
14890 | struct breakpoint *t; |
14891 | int tpnum; | |
0b39b52e | 14892 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14893 | |
bfd28288 | 14894 | if (parser != NULL) |
197f0a60 | 14895 | { |
bfd28288 PA |
14896 | gdb_assert (!parser->finished ()); |
14897 | tpnum = parser->get_number (); | |
197f0a60 TT |
14898 | } |
14899 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14900 | tpnum = tracepoint_count; |
1042e4c0 | 14901 | else |
197f0a60 | 14902 | tpnum = get_number (arg); |
1042e4c0 SS |
14903 | |
14904 | if (tpnum <= 0) | |
14905 | { | |
14906 | if (instring && *instring) | |
14907 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14908 | instring); | |
14909 | else | |
5fa1d40e | 14910 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14911 | return NULL; |
14912 | } | |
14913 | ||
14914 | ALL_TRACEPOINTS (t) | |
14915 | if (t->number == tpnum) | |
14916 | { | |
d9b3f62e | 14917 | return (struct tracepoint *) t; |
1042e4c0 SS |
14918 | } |
14919 | ||
1042e4c0 SS |
14920 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14921 | return NULL; | |
14922 | } | |
14923 | ||
d9b3f62e PA |
14924 | void |
14925 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14926 | { | |
14927 | if (b->thread != -1) | |
14928 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14929 | ||
14930 | if (b->task != 0) | |
14931 | fprintf_unfiltered (fp, " task %d", b->task); | |
14932 | ||
14933 | fprintf_unfiltered (fp, "\n"); | |
14934 | } | |
14935 | ||
6149aea9 PA |
14936 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14937 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14938 | on each breakpoint and only include the ones for which it returns | |
14939 | non-zero. */ | |
14940 | ||
1042e4c0 | 14941 | static void |
4495129a | 14942 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 14943 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14944 | { |
14945 | struct breakpoint *tp; | |
6149aea9 | 14946 | int any = 0; |
6149aea9 | 14947 | int extra_trace_bits = 0; |
1042e4c0 | 14948 | |
6149aea9 PA |
14949 | if (filename == 0 || *filename == 0) |
14950 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14951 | |
14952 | /* See if we have anything to save. */ | |
6149aea9 | 14953 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14954 | { |
6149aea9 | 14955 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14956 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14957 | continue; |
14958 | ||
14959 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14960 | if (filter && !filter (tp)) | |
14961 | continue; | |
14962 | ||
14963 | any = 1; | |
14964 | ||
14965 | if (is_tracepoint (tp)) | |
14966 | { | |
14967 | extra_trace_bits = 1; | |
14968 | ||
14969 | /* We can stop searching. */ | |
14970 | break; | |
14971 | } | |
1042e4c0 | 14972 | } |
6149aea9 PA |
14973 | |
14974 | if (!any) | |
1042e4c0 | 14975 | { |
6149aea9 | 14976 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14977 | return; |
14978 | } | |
14979 | ||
ee0c3293 | 14980 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14981 | |
14982 | stdio_file fp; | |
14983 | ||
ee0c3293 | 14984 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14985 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14986 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14987 | |
6149aea9 | 14988 | if (extra_trace_bits) |
d7e74731 | 14989 | save_trace_state_variables (&fp); |
8bf6485c | 14990 | |
6149aea9 | 14991 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14992 | { |
6149aea9 | 14993 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14994 | if (!user_breakpoint_p (tp)) |
6149aea9 | 14995 | continue; |
8bf6485c | 14996 | |
6149aea9 PA |
14997 | /* If we have a filter, only save the breakpoints it accepts. */ |
14998 | if (filter && !filter (tp)) | |
14999 | continue; | |
15000 | ||
d7e74731 | 15001 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15002 | |
6149aea9 PA |
15003 | /* Note, we can't rely on tp->number for anything, as we can't |
15004 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15005 | instead. */ | |
15006 | ||
15007 | if (tp->cond_string) | |
d7e74731 | 15008 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15009 | |
15010 | if (tp->ignore_count) | |
d7e74731 | 15011 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15012 | |
2d9442cc | 15013 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15014 | { |
d7e74731 | 15015 | fp.puts (" commands\n"); |
a7bdde9e | 15016 | |
d7e74731 | 15017 | current_uiout->redirect (&fp); |
a70b8144 | 15018 | try |
1042e4c0 | 15019 | { |
d1b0a7bf | 15020 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15021 | } |
230d2906 | 15022 | catch (const gdb_exception &ex) |
492d29ea | 15023 | { |
112e8700 | 15024 | current_uiout->redirect (NULL); |
eedc3f4f | 15025 | throw; |
492d29ea | 15026 | } |
1042e4c0 | 15027 | |
112e8700 | 15028 | current_uiout->redirect (NULL); |
d7e74731 | 15029 | fp.puts (" end\n"); |
1042e4c0 | 15030 | } |
6149aea9 PA |
15031 | |
15032 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15033 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15034 | |
15035 | /* If this is a multi-location breakpoint, check if the locations | |
15036 | should be individually disabled. Watchpoint locations are | |
15037 | special, and not user visible. */ | |
15038 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15039 | { | |
15040 | struct bp_location *loc; | |
15041 | int n = 1; | |
15042 | ||
15043 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15044 | if (!loc->enabled) | |
d7e74731 | 15045 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15046 | } |
1042e4c0 | 15047 | } |
8bf6485c | 15048 | |
6149aea9 | 15049 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15050 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15051 | |
1042e4c0 | 15052 | if (from_tty) |
ee0c3293 | 15053 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15054 | } |
15055 | ||
15056 | /* The `save breakpoints' command. */ | |
15057 | ||
15058 | static void | |
4495129a | 15059 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15060 | { |
15061 | save_breakpoints (args, from_tty, NULL); | |
15062 | } | |
15063 | ||
15064 | /* The `save tracepoints' command. */ | |
15065 | ||
15066 | static void | |
4495129a | 15067 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15068 | { |
15069 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15070 | } |
15071 | ||
15072 | /* Create a vector of all tracepoints. */ | |
15073 | ||
f51e0e20 | 15074 | std::vector<breakpoint *> |
eeae04df | 15075 | all_tracepoints (void) |
1042e4c0 | 15076 | { |
f51e0e20 | 15077 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15078 | struct breakpoint *tp; |
15079 | ||
15080 | ALL_TRACEPOINTS (tp) | |
15081 | { | |
f51e0e20 | 15082 | tp_vec.push_back (tp); |
1042e4c0 SS |
15083 | } |
15084 | ||
15085 | return tp_vec; | |
15086 | } | |
15087 | ||
c906108c | 15088 | \f |
629500fa KS |
15089 | /* This help string is used to consolidate all the help string for specifying |
15090 | locations used by several commands. */ | |
15091 | ||
15092 | #define LOCATION_HELP_STRING \ | |
15093 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15094 | source filename, function name, label name, and line number.\n\ | |
15095 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15096 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15097 | \"factorial.c:fact:the_top\".\n\ | |
15098 | \n\ | |
15099 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15100 | program. Example: To specify the fourth byte past the start function\n\ | |
15101 | \"main\", use \"*main + 4\".\n\ | |
15102 | \n\ | |
15103 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15104 | syntax to specify location parameters.\n\ | |
15105 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15106 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15107 | -function fact -label the_top\".\n\ |
15108 | \n\ | |
15109 | By default, a specified function is matched against the program's\n\ | |
15110 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15111 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15112 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15113 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15114 | specified name as a complete fully-qualified name instead." |
629500fa | 15115 | |
4a64f543 MS |
15116 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15117 | commands. It is defined as a macro to prevent duplication. | |
15118 | COMMAND should be a string constant containing the name of the | |
15119 | command. */ | |
629500fa | 15120 | |
31e2b00f | 15121 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15122 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15123 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15124 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15125 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15126 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15127 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15128 | below.\n\ | |
15129 | \n\ | |
dc10affe PA |
15130 | With no LOCATION, uses current execution address of the selected\n\ |
15131 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15132 | \n\ |
15133 | THREADNUM is the number from \"info threads\".\n\ | |
15134 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15135 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15136 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15137 | conditions are different.\n\ | |
31e2b00f AS |
15138 | \n\ |
15139 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15140 | ||
44feb3ce TT |
15141 | /* List of subcommands for "catch". */ |
15142 | static struct cmd_list_element *catch_cmdlist; | |
15143 | ||
15144 | /* List of subcommands for "tcatch". */ | |
15145 | static struct cmd_list_element *tcatch_cmdlist; | |
15146 | ||
9ac4176b | 15147 | void |
a121b7c1 | 15148 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15149 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15150 | completer_ftype *completer, |
44feb3ce TT |
15151 | void *user_data_catch, |
15152 | void *user_data_tcatch) | |
15153 | { | |
15154 | struct cmd_list_element *command; | |
15155 | ||
0450cc4c | 15156 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15157 | &catch_cmdlist); |
15158 | set_cmd_sfunc (command, sfunc); | |
15159 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15160 | set_cmd_completer (command, completer); |
44feb3ce | 15161 | |
0450cc4c | 15162 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15163 | &tcatch_cmdlist); |
15164 | set_cmd_sfunc (command, sfunc); | |
15165 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15166 | set_cmd_completer (command, completer); |
44feb3ce TT |
15167 | } |
15168 | ||
6149aea9 | 15169 | static void |
981a3fb3 | 15170 | save_command (const char *arg, int from_tty) |
6149aea9 | 15171 | { |
3e43a32a MS |
15172 | printf_unfiltered (_("\"save\" must be followed by " |
15173 | "the name of a save subcommand.\n")); | |
635c7e8a | 15174 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15175 | } |
15176 | ||
84f4c1fe PM |
15177 | struct breakpoint * |
15178 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15179 | void *data) | |
15180 | { | |
35df4500 | 15181 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15182 | |
35df4500 | 15183 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15184 | { |
15185 | if ((*callback) (b, data)) | |
15186 | return b; | |
15187 | } | |
15188 | ||
15189 | return NULL; | |
15190 | } | |
15191 | ||
0574c78f GB |
15192 | /* Zero if any of the breakpoint's locations could be a location where |
15193 | functions have been inlined, nonzero otherwise. */ | |
15194 | ||
15195 | static int | |
15196 | is_non_inline_function (struct breakpoint *b) | |
15197 | { | |
15198 | /* The shared library event breakpoint is set on the address of a | |
15199 | non-inline function. */ | |
15200 | if (b->type == bp_shlib_event) | |
15201 | return 1; | |
15202 | ||
15203 | return 0; | |
15204 | } | |
15205 | ||
15206 | /* Nonzero if the specified PC cannot be a location where functions | |
15207 | have been inlined. */ | |
15208 | ||
15209 | int | |
accd0bcd | 15210 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15211 | const struct target_waitstatus *ws) |
0574c78f GB |
15212 | { |
15213 | struct breakpoint *b; | |
15214 | struct bp_location *bl; | |
15215 | ||
15216 | ALL_BREAKPOINTS (b) | |
15217 | { | |
15218 | if (!is_non_inline_function (b)) | |
15219 | continue; | |
15220 | ||
15221 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15222 | { | |
15223 | if (!bl->shlib_disabled | |
09ac7c10 | 15224 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15225 | return 1; |
15226 | } | |
15227 | } | |
15228 | ||
15229 | return 0; | |
15230 | } | |
15231 | ||
2f202fde JK |
15232 | /* Remove any references to OBJFILE which is going to be freed. */ |
15233 | ||
15234 | void | |
15235 | breakpoint_free_objfile (struct objfile *objfile) | |
15236 | { | |
15237 | struct bp_location **locp, *loc; | |
15238 | ||
15239 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15240 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15241 | loc->symtab = NULL; |
15242 | } | |
15243 | ||
2060206e PA |
15244 | void |
15245 | initialize_breakpoint_ops (void) | |
15246 | { | |
15247 | static int initialized = 0; | |
15248 | ||
15249 | struct breakpoint_ops *ops; | |
15250 | ||
15251 | if (initialized) | |
15252 | return; | |
15253 | initialized = 1; | |
15254 | ||
15255 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15256 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15257 | internal and momentary breakpoints, etc.). */ | |
15258 | ops = &bkpt_base_breakpoint_ops; | |
15259 | *ops = base_breakpoint_ops; | |
15260 | ops->re_set = bkpt_re_set; | |
15261 | ops->insert_location = bkpt_insert_location; | |
15262 | ops->remove_location = bkpt_remove_location; | |
15263 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15264 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15265 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15266 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15267 | |
15268 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15269 | ops = &bkpt_breakpoint_ops; | |
15270 | *ops = bkpt_base_breakpoint_ops; | |
15271 | ops->re_set = bkpt_re_set; | |
15272 | ops->resources_needed = bkpt_resources_needed; | |
15273 | ops->print_it = bkpt_print_it; | |
15274 | ops->print_mention = bkpt_print_mention; | |
15275 | ops->print_recreate = bkpt_print_recreate; | |
15276 | ||
15277 | /* Ranged breakpoints. */ | |
15278 | ops = &ranged_breakpoint_ops; | |
15279 | *ops = bkpt_breakpoint_ops; | |
15280 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15281 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15282 | ops->print_it = print_it_ranged_breakpoint; | |
15283 | ops->print_one = print_one_ranged_breakpoint; | |
15284 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15285 | ops->print_mention = print_mention_ranged_breakpoint; | |
15286 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15287 | ||
15288 | /* Internal breakpoints. */ | |
15289 | ops = &internal_breakpoint_ops; | |
15290 | *ops = bkpt_base_breakpoint_ops; | |
15291 | ops->re_set = internal_bkpt_re_set; | |
15292 | ops->check_status = internal_bkpt_check_status; | |
15293 | ops->print_it = internal_bkpt_print_it; | |
15294 | ops->print_mention = internal_bkpt_print_mention; | |
15295 | ||
15296 | /* Momentary breakpoints. */ | |
15297 | ops = &momentary_breakpoint_ops; | |
15298 | *ops = bkpt_base_breakpoint_ops; | |
15299 | ops->re_set = momentary_bkpt_re_set; | |
15300 | ops->check_status = momentary_bkpt_check_status; | |
15301 | ops->print_it = momentary_bkpt_print_it; | |
15302 | ops->print_mention = momentary_bkpt_print_mention; | |
15303 | ||
55aa24fb SDJ |
15304 | /* Probe breakpoints. */ |
15305 | ops = &bkpt_probe_breakpoint_ops; | |
15306 | *ops = bkpt_breakpoint_ops; | |
15307 | ops->insert_location = bkpt_probe_insert_location; | |
15308 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15309 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15310 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15311 | |
2060206e PA |
15312 | /* Watchpoints. */ |
15313 | ops = &watchpoint_breakpoint_ops; | |
15314 | *ops = base_breakpoint_ops; | |
15315 | ops->re_set = re_set_watchpoint; | |
15316 | ops->insert_location = insert_watchpoint; | |
15317 | ops->remove_location = remove_watchpoint; | |
15318 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15319 | ops->check_status = check_status_watchpoint; | |
15320 | ops->resources_needed = resources_needed_watchpoint; | |
15321 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15322 | ops->print_it = print_it_watchpoint; | |
15323 | ops->print_mention = print_mention_watchpoint; | |
15324 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15325 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15326 | |
15327 | /* Masked watchpoints. */ | |
15328 | ops = &masked_watchpoint_breakpoint_ops; | |
15329 | *ops = watchpoint_breakpoint_ops; | |
15330 | ops->insert_location = insert_masked_watchpoint; | |
15331 | ops->remove_location = remove_masked_watchpoint; | |
15332 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15333 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15334 | ops->print_it = print_it_masked_watchpoint; | |
15335 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15336 | ops->print_mention = print_mention_masked_watchpoint; | |
15337 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15338 | ||
15339 | /* Tracepoints. */ | |
15340 | ops = &tracepoint_breakpoint_ops; | |
15341 | *ops = base_breakpoint_ops; | |
15342 | ops->re_set = tracepoint_re_set; | |
15343 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15344 | ops->print_one_detail = tracepoint_print_one_detail; | |
15345 | ops->print_mention = tracepoint_print_mention; | |
15346 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15347 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15348 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15349 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15350 | |
55aa24fb SDJ |
15351 | /* Probe tracepoints. */ |
15352 | ops = &tracepoint_probe_breakpoint_ops; | |
15353 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15354 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15355 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15356 | |
983af33b SDJ |
15357 | /* Static tracepoints with marker (`-m'). */ |
15358 | ops = &strace_marker_breakpoint_ops; | |
15359 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15360 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15361 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15362 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15363 | |
15364 | /* Fork catchpoints. */ | |
15365 | ops = &catch_fork_breakpoint_ops; | |
15366 | *ops = base_breakpoint_ops; | |
15367 | ops->insert_location = insert_catch_fork; | |
15368 | ops->remove_location = remove_catch_fork; | |
15369 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15370 | ops->print_it = print_it_catch_fork; | |
15371 | ops->print_one = print_one_catch_fork; | |
15372 | ops->print_mention = print_mention_catch_fork; | |
15373 | ops->print_recreate = print_recreate_catch_fork; | |
15374 | ||
15375 | /* Vfork catchpoints. */ | |
15376 | ops = &catch_vfork_breakpoint_ops; | |
15377 | *ops = base_breakpoint_ops; | |
15378 | ops->insert_location = insert_catch_vfork; | |
15379 | ops->remove_location = remove_catch_vfork; | |
15380 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15381 | ops->print_it = print_it_catch_vfork; | |
15382 | ops->print_one = print_one_catch_vfork; | |
15383 | ops->print_mention = print_mention_catch_vfork; | |
15384 | ops->print_recreate = print_recreate_catch_vfork; | |
15385 | ||
15386 | /* Exec catchpoints. */ | |
15387 | ops = &catch_exec_breakpoint_ops; | |
15388 | *ops = base_breakpoint_ops; | |
2060206e PA |
15389 | ops->insert_location = insert_catch_exec; |
15390 | ops->remove_location = remove_catch_exec; | |
15391 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15392 | ops->print_it = print_it_catch_exec; | |
15393 | ops->print_one = print_one_catch_exec; | |
15394 | ops->print_mention = print_mention_catch_exec; | |
15395 | ops->print_recreate = print_recreate_catch_exec; | |
15396 | ||
edcc5120 TT |
15397 | /* Solib-related catchpoints. */ |
15398 | ops = &catch_solib_breakpoint_ops; | |
15399 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15400 | ops->insert_location = insert_catch_solib; |
15401 | ops->remove_location = remove_catch_solib; | |
15402 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15403 | ops->check_status = check_status_catch_solib; | |
15404 | ops->print_it = print_it_catch_solib; | |
15405 | ops->print_one = print_one_catch_solib; | |
15406 | ops->print_mention = print_mention_catch_solib; | |
15407 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15408 | |
15409 | ops = &dprintf_breakpoint_ops; | |
15410 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15411 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15412 | ops->resources_needed = bkpt_resources_needed; |
15413 | ops->print_it = bkpt_print_it; | |
15414 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15415 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15416 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15417 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15418 | } |
15419 | ||
8bfd80db YQ |
15420 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15421 | ||
15422 | static struct cmd_list_element *enablebreaklist = NULL; | |
15423 | ||
8588b356 SM |
15424 | /* See breakpoint.h. */ |
15425 | ||
15426 | cmd_list_element *commands_cmd_element = nullptr; | |
15427 | ||
c906108c | 15428 | void |
fba45db2 | 15429 | _initialize_breakpoint (void) |
c906108c SS |
15430 | { |
15431 | struct cmd_list_element *c; | |
15432 | ||
2060206e PA |
15433 | initialize_breakpoint_ops (); |
15434 | ||
76727919 TT |
15435 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15436 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15437 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15438 | |
c906108c SS |
15439 | breakpoint_chain = 0; |
15440 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15441 | before a breakpoint is set. */ | |
15442 | breakpoint_count = 0; | |
15443 | ||
1042e4c0 SS |
15444 | tracepoint_count = 0; |
15445 | ||
1bedd215 AC |
15446 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15447 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15448 | Usage is `ignore N COUNT'.")); | |
c906108c | 15449 | |
8588b356 SM |
15450 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15451 | commands_command, _("\ | |
18da0c51 MG |
15452 | Set commands to be executed when the given breakpoints are hit.\n\ |
15453 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15454 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15455 | (e.g. `5-7').\n\ | |
c906108c SS |
15456 | With no argument, the targeted breakpoint is the last one set.\n\ |
15457 | The commands themselves follow starting on the next line.\n\ | |
15458 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15459 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15460 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15461 | |
d55637df | 15462 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15463 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15464 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15465 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15466 | set_cmd_completer (c, condition_completer); |
c906108c | 15467 | |
1bedd215 | 15468 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15469 | Set a temporary breakpoint.\n\ |
c906108c SS |
15470 | Like \"break\" except the breakpoint is only temporary,\n\ |
15471 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15472 | by using \"enable delete\" on the breakpoint number.\n\ |
15473 | \n" | |
15474 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15475 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15476 | |
1bedd215 | 15477 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15478 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15479 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15480 | some target hardware may not have this support.\n\ |
15481 | \n" | |
15482 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15483 | set_cmd_completer (c, location_completer); |
c906108c | 15484 | |
1bedd215 | 15485 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15486 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15487 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15488 | so it will be deleted when hit.\n\ |
15489 | \n" | |
15490 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15491 | set_cmd_completer (c, location_completer); |
c906108c | 15492 | |
1bedd215 AC |
15493 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15494 | Enable some breakpoints.\n\ | |
c906108c SS |
15495 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15496 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15497 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15498 | With a subcommand you can enable temporarily."), |
c906108c | 15499 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15500 | |
15501 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15502 | ||
84951ab5 | 15503 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15504 | Enable some breakpoints.\n\ |
c906108c SS |
15505 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15506 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15507 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15508 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15509 | |
1a966eab AC |
15510 | add_cmd ("once", no_class, enable_once_command, _("\ |
15511 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15512 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15513 | &enablebreaklist); |
15514 | ||
1a966eab AC |
15515 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15516 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15517 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15518 | &enablebreaklist); |
15519 | ||
816338b5 SS |
15520 | add_cmd ("count", no_class, enable_count_command, _("\ |
15521 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15522 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15523 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15524 | &enablebreaklist); | |
15525 | ||
1a966eab AC |
15526 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15527 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15528 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15529 | &enablelist); |
15530 | ||
1a966eab AC |
15531 | add_cmd ("once", no_class, enable_once_command, _("\ |
15532 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15533 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15534 | &enablelist); |
15535 | ||
15536 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15537 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15538 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15539 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15540 | &enablelist); |
15541 | ||
1bedd215 AC |
15542 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15543 | Disable some breakpoints.\n\ | |
c906108c SS |
15544 | Arguments are breakpoint numbers with spaces in between.\n\ |
15545 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15546 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15547 | &disablelist, "disable ", 1, &cmdlist); |
15548 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15549 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15550 | |
1a966eab AC |
15551 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15552 | Disable some breakpoints.\n\ | |
c906108c SS |
15553 | Arguments are breakpoint numbers with spaces in between.\n\ |
15554 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15555 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15556 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15557 | &disablelist); |
15558 | ||
1bedd215 AC |
15559 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15560 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15561 | Arguments are breakpoint numbers with spaces in between.\n\ |
15562 | To delete all breakpoints, give no argument.\n\ | |
15563 | \n\ | |
15564 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15565 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15566 | &deletelist, "delete ", 1, &cmdlist); |
15567 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15568 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15569 | |
1a966eab AC |
15570 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15571 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15572 | Arguments are breakpoint numbers with spaces in between.\n\ |
15573 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15574 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15575 | &deletelist); |
15576 | ||
1bedd215 | 15577 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15578 | Clear breakpoint at specified location.\n\ |
15579 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15580 | \n\ |
15581 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15582 | is executing in.\n" |
89549d7f | 15583 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15584 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15585 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15586 | |
1bedd215 | 15587 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15588 | Set breakpoint at specified location.\n" |
31e2b00f | 15589 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15590 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15591 | |
c906108c SS |
15592 | add_com_alias ("b", "break", class_run, 1); |
15593 | add_com_alias ("br", "break", class_run, 1); | |
15594 | add_com_alias ("bre", "break", class_run, 1); | |
15595 | add_com_alias ("brea", "break", class_run, 1); | |
15596 | ||
c906108c SS |
15597 | if (dbx_commands) |
15598 | { | |
1bedd215 AC |
15599 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15600 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15601 | &stoplist, "stop ", 1, &cmdlist); |
15602 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15603 | _("Break in function or address."), &stoplist); |
c5aa993b | 15604 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15605 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15606 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15607 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15608 | The \"Type\" column indicates one of:\n\ |
15609 | \tbreakpoint - normal breakpoint\n\ | |
15610 | \twatchpoint - watchpoint\n\ | |
15611 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15612 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15613 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15614 | address and file/line number respectively.\n\ |
15615 | \n\ | |
15616 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15617 | are set to the address of the last breakpoint listed unless the command\n\ |
15618 | is prefixed with \"server \".\n\n\ | |
c906108c | 15619 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15620 | breakpoint set.")); |
c906108c SS |
15621 | } |
15622 | ||
11db9430 | 15623 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15624 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15625 | The \"Type\" column indicates one of:\n\ |
15626 | \tbreakpoint - normal breakpoint\n\ | |
15627 | \twatchpoint - watchpoint\n\ | |
15628 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15629 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15630 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15631 | address and file/line number respectively.\n\ |
15632 | \n\ | |
15633 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15634 | are set to the address of the last breakpoint listed unless the command\n\ |
15635 | is prefixed with \"server \".\n\n\ | |
c906108c | 15636 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15637 | breakpoint set.")); |
c906108c | 15638 | |
6b04bdb7 MS |
15639 | add_info_alias ("b", "breakpoints", 1); |
15640 | ||
1a966eab AC |
15641 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15642 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15643 | The \"Type\" column indicates one of:\n\ |
15644 | \tbreakpoint - normal breakpoint\n\ | |
15645 | \twatchpoint - watchpoint\n\ | |
15646 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15647 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15648 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15649 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15650 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15651 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15652 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15653 | address and file/line number respectively.\n\ |
15654 | \n\ | |
15655 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15656 | are set to the address of the last breakpoint listed unless the command\n\ |
15657 | is prefixed with \"server \".\n\n\ | |
c906108c | 15658 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15659 | breakpoint set."), |
c906108c SS |
15660 | &maintenanceinfolist); |
15661 | ||
44feb3ce TT |
15662 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15663 | Set catchpoints to catch events."), | |
15664 | &catch_cmdlist, "catch ", | |
15665 | 0/*allow-unknown*/, &cmdlist); | |
15666 | ||
15667 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15668 | Set temporary catchpoints to catch events."), | |
15669 | &tcatch_cmdlist, "tcatch ", | |
15670 | 0/*allow-unknown*/, &cmdlist); | |
15671 | ||
44feb3ce TT |
15672 | add_catch_command ("fork", _("Catch calls to fork."), |
15673 | catch_fork_command_1, | |
a96d9b2e | 15674 | NULL, |
44feb3ce TT |
15675 | (void *) (uintptr_t) catch_fork_permanent, |
15676 | (void *) (uintptr_t) catch_fork_temporary); | |
15677 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15678 | catch_fork_command_1, | |
a96d9b2e | 15679 | NULL, |
44feb3ce TT |
15680 | (void *) (uintptr_t) catch_vfork_permanent, |
15681 | (void *) (uintptr_t) catch_vfork_temporary); | |
15682 | add_catch_command ("exec", _("Catch calls to exec."), | |
15683 | catch_exec_command_1, | |
a96d9b2e SDJ |
15684 | NULL, |
15685 | CATCH_PERMANENT, | |
15686 | CATCH_TEMPORARY); | |
edcc5120 TT |
15687 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15688 | Usage: catch load [REGEX]\n\ | |
15689 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15690 | catch_load_command_1, | |
15691 | NULL, | |
15692 | CATCH_PERMANENT, | |
15693 | CATCH_TEMPORARY); | |
15694 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15695 | Usage: catch unload [REGEX]\n\ | |
15696 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15697 | catch_unload_command_1, | |
15698 | NULL, | |
15699 | CATCH_PERMANENT, | |
15700 | CATCH_TEMPORARY); | |
c5aa993b | 15701 | |
1bedd215 AC |
15702 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15703 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15704 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15705 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15706 | an expression changes.\n\ |
15707 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15708 | the memory to which it refers.")); | |
65d12d83 | 15709 | set_cmd_completer (c, expression_completer); |
c906108c | 15710 | |
1bedd215 AC |
15711 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15712 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15713 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15714 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15715 | an expression is read.\n\ |
15716 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15717 | the memory to which it refers.")); | |
65d12d83 | 15718 | set_cmd_completer (c, expression_completer); |
c906108c | 15719 | |
1bedd215 AC |
15720 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15721 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15722 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15723 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15724 | an expression is either read or written.\n\ |
15725 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15726 | the memory to which it refers.")); | |
65d12d83 | 15727 | set_cmd_completer (c, expression_completer); |
c906108c | 15728 | |
11db9430 | 15729 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15730 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15731 | |
920d2a44 AC |
15732 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15733 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15734 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15735 | &can_use_hw_watchpoints, _("\ | |
15736 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15737 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15738 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15739 | such is available. (However, any hardware watchpoints that were\n\ | |
15740 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15741 | hardware.)"), |
15742 | NULL, | |
920d2a44 | 15743 | show_can_use_hw_watchpoints, |
85c07804 | 15744 | &setlist, &showlist); |
c906108c SS |
15745 | |
15746 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15747 | |
1042e4c0 SS |
15748 | /* Tracepoint manipulation commands. */ |
15749 | ||
15750 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15751 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15752 | \n" |
15753 | BREAK_ARGS_HELP ("trace") "\n\ | |
15754 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15755 | set_cmd_completer (c, location_completer); | |
15756 | ||
15757 | add_com_alias ("tp", "trace", class_alias, 0); | |
15758 | add_com_alias ("tr", "trace", class_alias, 1); | |
15759 | add_com_alias ("tra", "trace", class_alias, 1); | |
15760 | add_com_alias ("trac", "trace", class_alias, 1); | |
15761 | ||
7a697b8d | 15762 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15763 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15764 | \n" |
15765 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15766 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15767 | set_cmd_completer (c, location_completer); | |
15768 | ||
0fb4aa4b | 15769 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15770 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15771 | \n\ |
15772 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15773 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15774 | or -m MARKER_ID.\n\n\ | |
15775 | If a marker id is specified, probe the marker with that name. With\n\ | |
15776 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15777 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15778 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15779 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15780 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15781 | \n\ | |
15782 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15783 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15784 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15785 | conditions are different.\n\ | |
0fb4aa4b PA |
15786 | \n\ |
15787 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15788 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15789 | set_cmd_completer (c, location_completer); | |
15790 | ||
11db9430 | 15791 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15792 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15793 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15794 | last tracepoint set.")); | |
15795 | ||
15796 | add_info_alias ("tp", "tracepoints", 1); | |
15797 | ||
15798 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15799 | Delete specified tracepoints.\n\ | |
15800 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15801 | No argument means delete all tracepoints."), | |
15802 | &deletelist); | |
7e20dfcd | 15803 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15804 | |
15805 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15806 | Disable specified tracepoints.\n\ | |
15807 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15808 | No argument means disable all tracepoints."), | |
15809 | &disablelist); | |
15810 | deprecate_cmd (c, "disable"); | |
15811 | ||
15812 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15813 | Enable specified tracepoints.\n\ | |
15814 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15815 | No argument means enable all tracepoints."), | |
15816 | &enablelist); | |
15817 | deprecate_cmd (c, "enable"); | |
15818 | ||
15819 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15820 | Set the passcount for a tracepoint.\n\ | |
15821 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15822 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15823 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15824 | ||
6149aea9 PA |
15825 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15826 | _("Save breakpoint definitions as a script."), | |
15827 | &save_cmdlist, "save ", | |
15828 | 0/*allow-unknown*/, &cmdlist); | |
15829 | ||
15830 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15831 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15832 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15833 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15834 | session to restore them."), | |
15835 | &save_cmdlist); | |
15836 | set_cmd_completer (c, filename_completer); | |
15837 | ||
15838 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15839 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15840 | Use the 'source' command in another debug session to restore them."), |
15841 | &save_cmdlist); | |
1042e4c0 SS |
15842 | set_cmd_completer (c, filename_completer); |
15843 | ||
6149aea9 PA |
15844 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15845 | deprecate_cmd (c, "save tracepoints"); | |
15846 | ||
1bedd215 | 15847 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15848 | Breakpoint specific settings\n\ |
15849 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15850 | pending breakpoint behavior"), |
fa8d40ab JJ |
15851 | &breakpoint_set_cmdlist, "set breakpoint ", |
15852 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15853 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15854 | Breakpoint specific settings\n\ |
15855 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15856 | pending breakpoint behavior"), |
fa8d40ab JJ |
15857 | &breakpoint_show_cmdlist, "show breakpoint ", |
15858 | 0/*allow-unknown*/, &showlist); | |
15859 | ||
7915a72c AC |
15860 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15861 | &pending_break_support, _("\ | |
15862 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15863 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15864 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15865 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15866 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15867 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15868 | NULL, |
920d2a44 | 15869 | show_pending_break_support, |
6e1d7d6c AC |
15870 | &breakpoint_set_cmdlist, |
15871 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15872 | |
15873 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15874 | |
15875 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15876 | &automatic_hardware_breakpoints, _("\ | |
15877 | Set automatic usage of hardware breakpoints."), _("\ | |
15878 | Show automatic usage of hardware breakpoints."), _("\ | |
15879 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15880 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15881 | a warning will be emitted for such breakpoints."), | |
15882 | NULL, | |
15883 | show_automatic_hardware_breakpoints, | |
15884 | &breakpoint_set_cmdlist, | |
15885 | &breakpoint_show_cmdlist); | |
74960c60 | 15886 | |
a25a5a45 PA |
15887 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15888 | &always_inserted_mode, _("\ | |
74960c60 VP |
15889 | Set mode for inserting breakpoints."), _("\ |
15890 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15891 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15892 | they're created, kept inserted even when execution stops, and removed\n\ | |
15893 | only when the user deletes them. When this mode is off (the default),\n\ | |
15894 | breakpoints are inserted only when execution continues, and removed\n\ | |
15895 | when execution stops."), | |
72d0e2c5 YQ |
15896 | NULL, |
15897 | &show_always_inserted_mode, | |
15898 | &breakpoint_set_cmdlist, | |
15899 | &breakpoint_show_cmdlist); | |
f1310107 | 15900 | |
b775012e LM |
15901 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15902 | condition_evaluation_enums, | |
15903 | &condition_evaluation_mode_1, _("\ | |
15904 | Set mode of breakpoint condition evaluation."), _("\ | |
15905 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15906 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15907 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15908 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15909 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15910 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15911 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15912 | be set to \"gdb\""), | |
15913 | &set_condition_evaluation_mode, | |
15914 | &show_condition_evaluation_mode, | |
15915 | &breakpoint_set_cmdlist, | |
15916 | &breakpoint_show_cmdlist); | |
15917 | ||
f1310107 TJB |
15918 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15919 | Set a breakpoint for an address range.\n\ | |
15920 | break-range START-LOCATION, END-LOCATION\n\ | |
15921 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15922 | LINENUM, for that line in the current file,\n\ | |
15923 | FILE:LINENUM, for that line in that file,\n\ | |
15924 | +OFFSET, for that number of lines after the current line\n\ | |
15925 | or the start of the range\n\ | |
15926 | FUNCTION, for the first line in that function,\n\ | |
15927 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15928 | *ADDRESS, for the instruction at that address.\n\ | |
15929 | \n\ | |
15930 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15931 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15932 | range (including START-LOCATION and END-LOCATION).")); | |
15933 | ||
e7e0cddf | 15934 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15935 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15936 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15937 | location may be a linespec, explicit, or address location.\n" |
15938 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15939 | set_cmd_completer (c, location_completer); |
15940 | ||
15941 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15942 | dprintf_style_enums, &dprintf_style, _("\ | |
15943 | Set the style of usage for dynamic printf."), _("\ | |
15944 | Show the style of usage for dynamic printf."), _("\ | |
15945 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15946 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15947 | console, as with the \"printf\" command.\n\ | |
15948 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15949 | program; by default printf(), but you can choose a different function or\n\ | |
15950 | output stream by setting dprintf-function and dprintf-channel."), | |
15951 | update_dprintf_commands, NULL, | |
15952 | &setlist, &showlist); | |
15953 | ||
15954 | dprintf_function = xstrdup ("printf"); | |
15955 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15956 | &dprintf_function, _("\ | |
15957 | Set the function to use for dynamic printf"), _("\ | |
15958 | Show the function to use for dynamic printf"), NULL, | |
15959 | update_dprintf_commands, NULL, | |
15960 | &setlist, &showlist); | |
15961 | ||
15962 | dprintf_channel = xstrdup (""); | |
15963 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15964 | &dprintf_channel, _("\ | |
15965 | Set the channel to use for dynamic printf"), _("\ | |
15966 | Show the channel to use for dynamic printf"), NULL, | |
15967 | update_dprintf_commands, NULL, | |
15968 | &setlist, &showlist); | |
15969 | ||
d3ce09f5 SS |
15970 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15971 | &disconnected_dprintf, _("\ | |
15972 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15973 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15974 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15975 | even if GDB disconnects or detaches from the target."), | |
15976 | NULL, | |
15977 | NULL, | |
15978 | &setlist, &showlist); | |
15979 | ||
15980 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
15981 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
15982 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
15983 | ||
765dc015 | 15984 | automatic_hardware_breakpoints = 1; |
f3b1572e | 15985 | |
76727919 TT |
15986 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
15987 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 15988 | } |