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) | |
eb3ff9a5 PA |
944 | { |
945 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
946 | tracker.add_completion (std::move (copy)); | |
947 | } | |
58ce7251 | 948 | } |
d55637df | 949 | |
eb3ff9a5 | 950 | return; |
d55637df TT |
951 | } |
952 | ||
953 | /* We're completing the expression part. */ | |
f1735a53 | 954 | text = skip_spaces (space); |
eb3ff9a5 | 955 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
956 | } |
957 | ||
c906108c SS |
958 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
959 | ||
960 | static void | |
0b39b52e | 961 | condition_command (const char *arg, int from_tty) |
c906108c | 962 | { |
52f0bd74 | 963 | struct breakpoint *b; |
0b39b52e | 964 | const char *p; |
52f0bd74 | 965 | int bnum; |
c906108c SS |
966 | |
967 | if (arg == 0) | |
e2e0b3e5 | 968 | error_no_arg (_("breakpoint number")); |
c906108c SS |
969 | |
970 | p = arg; | |
971 | bnum = get_number (&p); | |
5c44784c | 972 | if (bnum == 0) |
8a3fe4f8 | 973 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
974 | |
975 | ALL_BREAKPOINTS (b) | |
976 | if (b->number == bnum) | |
2f069f6f | 977 | { |
6dddc817 DE |
978 | /* Check if this breakpoint has a "stop" method implemented in an |
979 | extension language. This method and conditions entered into GDB | |
980 | from the CLI are mutually exclusive. */ | |
981 | const struct extension_language_defn *extlang | |
982 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
983 | ||
984 | if (extlang != NULL) | |
985 | { | |
986 | error (_("Only one stop condition allowed. There is currently" | |
987 | " a %s stop condition defined for this breakpoint."), | |
988 | ext_lang_capitalized_name (extlang)); | |
989 | } | |
2566ad2d | 990 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
991 | |
992 | if (is_breakpoint (b)) | |
44702360 | 993 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 994 | |
2f069f6f JB |
995 | return; |
996 | } | |
c906108c | 997 | |
8a3fe4f8 | 998 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
999 | } |
1000 | ||
a7bdde9e VP |
1001 | /* Check that COMMAND do not contain commands that are suitable |
1002 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1003 | Throw if any such commands is found. */ |
1004 | ||
a7bdde9e VP |
1005 | static void |
1006 | check_no_tracepoint_commands (struct command_line *commands) | |
1007 | { | |
1008 | struct command_line *c; | |
cc59ec59 | 1009 | |
a7bdde9e VP |
1010 | for (c = commands; c; c = c->next) |
1011 | { | |
a7bdde9e | 1012 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1013 | error (_("The 'while-stepping' command can " |
1014 | "only be used for tracepoints")); | |
a7bdde9e | 1015 | |
12973681 TT |
1016 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1017 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1018 | |
1019 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1020 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1021 | command directly. */ |
1022 | if (strstr (c->line, "collect ") == c->line) | |
1023 | error (_("The 'collect' command can only be used for tracepoints")); | |
1024 | ||
51661e93 VP |
1025 | if (strstr (c->line, "teval ") == c->line) |
1026 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1027 | } |
1028 | } | |
1029 | ||
c1fc2657 | 1030 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1031 | { |
c1fc2657 | 1032 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1033 | }; |
1034 | ||
d77f58be SS |
1035 | /* Encapsulate tests for different types of tracepoints. */ |
1036 | ||
3b0871f4 SM |
1037 | static bool |
1038 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1039 | { |
1040 | return (type == bp_tracepoint | |
1041 | || type == bp_fast_tracepoint | |
1042 | || type == bp_static_tracepoint); | |
1043 | } | |
1044 | ||
3b0871f4 SM |
1045 | static bool |
1046 | is_longjmp_type (bptype type) | |
1047 | { | |
1048 | return type == bp_longjmp || type == bp_exception; | |
1049 | } | |
1050 | ||
a7bdde9e | 1051 | int |
d77f58be | 1052 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1053 | { |
d9b3f62e | 1054 | return is_tracepoint_type (b->type); |
a7bdde9e | 1055 | } |
d9b3f62e | 1056 | |
a5e364af SM |
1057 | /* Factory function to create an appropriate instance of breakpoint given |
1058 | TYPE. */ | |
1059 | ||
1060 | static std::unique_ptr<breakpoint> | |
1061 | new_breakpoint_from_type (bptype type) | |
1062 | { | |
1063 | breakpoint *b; | |
1064 | ||
1065 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1066 | b = new tracepoint (); |
3b0871f4 | 1067 | else if (is_longjmp_type (type)) |
c1fc2657 | 1068 | b = new longjmp_breakpoint (); |
a5e364af SM |
1069 | else |
1070 | b = new breakpoint (); | |
1071 | ||
1072 | return std::unique_ptr<breakpoint> (b); | |
1073 | } | |
1074 | ||
e5dd4106 | 1075 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1076 | breakpoint. This function will throw an exception if a problem is |
1077 | found. */ | |
48cb2d85 | 1078 | |
95a42b64 TT |
1079 | static void |
1080 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1081 | struct command_line *commands) | |
48cb2d85 | 1082 | { |
d77f58be | 1083 | if (is_tracepoint (b)) |
a7bdde9e | 1084 | { |
c9a6ce02 | 1085 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1086 | struct command_line *c; |
1087 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1088 | |
1089 | /* Reset the while-stepping step count. The previous commands | |
1090 | might have included a while-stepping action, while the new | |
1091 | ones might not. */ | |
1092 | t->step_count = 0; | |
1093 | ||
1094 | /* We need to verify that each top-level element of commands is | |
1095 | valid for tracepoints, that there's at most one | |
1096 | while-stepping element, and that the while-stepping's body | |
1097 | has valid tracing commands excluding nested while-stepping. | |
1098 | We also need to validate the tracepoint action line in the | |
1099 | context of the tracepoint --- validate_actionline actually | |
1100 | has side effects, like setting the tracepoint's | |
1101 | while-stepping STEP_COUNT, in addition to checking if the | |
1102 | collect/teval actions parse and make sense in the | |
1103 | tracepoint's context. */ | |
a7bdde9e VP |
1104 | for (c = commands; c; c = c->next) |
1105 | { | |
a7bdde9e VP |
1106 | if (c->control_type == while_stepping_control) |
1107 | { | |
1108 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1109 | error (_("The 'while-stepping' command " |
1110 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1111 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1112 | error (_("The 'while-stepping' command " |
1113 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1114 | |
1115 | if (while_stepping) | |
3e43a32a MS |
1116 | error (_("The 'while-stepping' command " |
1117 | "can be used only once")); | |
a7bdde9e VP |
1118 | else |
1119 | while_stepping = c; | |
1120 | } | |
c9a6ce02 PA |
1121 | |
1122 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1123 | } |
1124 | if (while_stepping) | |
1125 | { | |
1126 | struct command_line *c2; | |
1127 | ||
12973681 TT |
1128 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1129 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1130 | for (; c2; c2 = c2->next) |
1131 | { | |
a7bdde9e VP |
1132 | if (c2->control_type == while_stepping_control) |
1133 | error (_("The 'while-stepping' command cannot be nested")); | |
1134 | } | |
1135 | } | |
1136 | } | |
1137 | else | |
1138 | { | |
1139 | check_no_tracepoint_commands (commands); | |
1140 | } | |
95a42b64 TT |
1141 | } |
1142 | ||
0fb4aa4b PA |
1143 | /* Return a vector of all the static tracepoints set at ADDR. The |
1144 | caller is responsible for releasing the vector. */ | |
1145 | ||
f51e0e20 | 1146 | std::vector<breakpoint *> |
0fb4aa4b PA |
1147 | static_tracepoints_here (CORE_ADDR addr) |
1148 | { | |
1149 | struct breakpoint *b; | |
f51e0e20 | 1150 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1151 | struct bp_location *loc; |
1152 | ||
1153 | ALL_BREAKPOINTS (b) | |
1154 | if (b->type == bp_static_tracepoint) | |
1155 | { | |
1156 | for (loc = b->loc; loc; loc = loc->next) | |
1157 | if (loc->address == addr) | |
f51e0e20 | 1158 | found.push_back (b); |
0fb4aa4b PA |
1159 | } |
1160 | ||
1161 | return found; | |
1162 | } | |
1163 | ||
95a42b64 | 1164 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1165 | validate that only allowed commands are included. */ |
95a42b64 TT |
1166 | |
1167 | void | |
4a64f543 | 1168 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1169 | counted_command_line &&commands) |
95a42b64 | 1170 | { |
93921405 | 1171 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1172 | |
d1b0a7bf | 1173 | b->commands = std::move (commands); |
76727919 | 1174 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1175 | } |
1176 | ||
45a43567 TT |
1177 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1178 | is not the same as the "silent" that may appear in the breakpoint's | |
1179 | commands. */ | |
1180 | ||
1181 | void | |
1182 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1183 | { | |
1184 | int old_silent = b->silent; | |
1185 | ||
1186 | b->silent = silent; | |
1187 | if (old_silent != silent) | |
76727919 | 1188 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1189 | } |
1190 | ||
1191 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1192 | breakpoint work for any thread. */ | |
1193 | ||
1194 | void | |
1195 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1196 | { | |
1197 | int old_thread = b->thread; | |
1198 | ||
1199 | b->thread = thread; | |
1200 | if (old_thread != thread) | |
76727919 | 1201 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1202 | } |
1203 | ||
1204 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1205 | breakpoint work for any task. */ | |
1206 | ||
1207 | void | |
1208 | breakpoint_set_task (struct breakpoint *b, int task) | |
1209 | { | |
1210 | int old_task = b->task; | |
1211 | ||
1212 | b->task = task; | |
1213 | if (old_task != task) | |
76727919 | 1214 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1215 | } |
1216 | ||
95a42b64 | 1217 | static void |
896b6bda | 1218 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1219 | struct command_line *control) |
95a42b64 | 1220 | { |
d1b0a7bf | 1221 | counted_command_line cmd; |
999700cd PW |
1222 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1223 | NULL after the call to read_command_lines if the user provides an empty | |
1224 | list of command by just typing "end". */ | |
1225 | bool cmd_read = false; | |
95a42b64 | 1226 | |
896b6bda PA |
1227 | std::string new_arg; |
1228 | ||
95a42b64 TT |
1229 | if (arg == NULL || !*arg) |
1230 | { | |
86b17b60 | 1231 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1232 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1233 | breakpoint_count); | |
95a42b64 | 1234 | else if (breakpoint_count > 0) |
896b6bda | 1235 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1236 | arg = new_arg.c_str (); |
1237 | } | |
1238 | ||
1239 | map_breakpoint_numbers | |
1240 | (arg, [&] (breakpoint *b) | |
1241 | { | |
999700cd | 1242 | if (!cmd_read) |
48649e1b | 1243 | { |
999700cd | 1244 | gdb_assert (cmd == NULL); |
48649e1b | 1245 | if (control != NULL) |
12973681 | 1246 | cmd = control->body_list_0; |
48649e1b TT |
1247 | else |
1248 | { | |
81b1e71c TT |
1249 | std::string str |
1250 | = string_printf (_("Type commands for breakpoint(s) " | |
1251 | "%s, one per line."), | |
1252 | arg); | |
48649e1b | 1253 | |
60b3cef2 TT |
1254 | auto do_validate = [=] (const char *line) |
1255 | { | |
1256 | validate_actionline (line, b); | |
1257 | }; | |
1258 | gdb::function_view<void (const char *)> validator; | |
1259 | if (is_tracepoint (b)) | |
1260 | validator = do_validate; | |
1261 | ||
1262 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1263 | } |
999700cd | 1264 | cmd_read = true; |
48649e1b TT |
1265 | } |
1266 | ||
1267 | /* If a breakpoint was on the list more than once, we don't need to | |
1268 | do anything. */ | |
1269 | if (b->commands != cmd) | |
1270 | { | |
d1b0a7bf | 1271 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1272 | b->commands = cmd; |
76727919 | 1273 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1274 | } |
1275 | }); | |
95a42b64 TT |
1276 | } |
1277 | ||
1278 | static void | |
0b39b52e | 1279 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1280 | { |
1281 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1282 | } |
40c03ae8 EZ |
1283 | |
1284 | /* Like commands_command, but instead of reading the commands from | |
1285 | input stream, takes them from an already parsed command structure. | |
1286 | ||
1287 | This is used by cli-script.c to DTRT with breakpoint commands | |
1288 | that are part of if and while bodies. */ | |
1289 | enum command_control_type | |
896b6bda | 1290 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1291 | { |
95a42b64 TT |
1292 | commands_command_1 (arg, 0, cmd); |
1293 | return simple_control; | |
40c03ae8 | 1294 | } |
876fa593 JK |
1295 | |
1296 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1297 | ||
1298 | static int | |
1299 | bp_location_has_shadow (struct bp_location *bl) | |
1300 | { | |
1301 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1302 | return 0; | |
1303 | if (!bl->inserted) | |
1304 | return 0; | |
1305 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1306 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1307 | return 0; |
1308 | return 1; | |
1309 | } | |
1310 | ||
9d497a19 PA |
1311 | /* Update BUF, which is LEN bytes read from the target address |
1312 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1313 | contents. | |
1314 | ||
1315 | If READBUF is not NULL, this buffer must not overlap with the of | |
1316 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1317 | failed assertion internal error will be raised. */ | |
1318 | ||
1319 | static void | |
1320 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1321 | const gdb_byte *writebuf_org, | |
1322 | ULONGEST memaddr, LONGEST len, | |
1323 | struct bp_target_info *target_info, | |
1324 | struct gdbarch *gdbarch) | |
1325 | { | |
1326 | /* Now do full processing of the found relevant range of elements. */ | |
1327 | CORE_ADDR bp_addr = 0; | |
1328 | int bp_size = 0; | |
1329 | int bptoffset = 0; | |
1330 | ||
1331 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1332 | current_program_space->aspace, 0)) | |
1333 | { | |
1334 | /* The breakpoint is inserted in a different address space. */ | |
1335 | return; | |
1336 | } | |
1337 | ||
1338 | /* Addresses and length of the part of the breakpoint that | |
1339 | we need to copy. */ | |
1340 | bp_addr = target_info->placed_address; | |
1341 | bp_size = target_info->shadow_len; | |
1342 | ||
1343 | if (bp_addr + bp_size <= memaddr) | |
1344 | { | |
1345 | /* The breakpoint is entirely before the chunk of memory we are | |
1346 | reading. */ | |
1347 | return; | |
1348 | } | |
1349 | ||
1350 | if (bp_addr >= memaddr + len) | |
1351 | { | |
1352 | /* The breakpoint is entirely after the chunk of memory we are | |
1353 | reading. */ | |
1354 | return; | |
1355 | } | |
1356 | ||
1357 | /* Offset within shadow_contents. */ | |
1358 | if (bp_addr < memaddr) | |
1359 | { | |
1360 | /* Only copy the second part of the breakpoint. */ | |
1361 | bp_size -= memaddr - bp_addr; | |
1362 | bptoffset = memaddr - bp_addr; | |
1363 | bp_addr = memaddr; | |
1364 | } | |
1365 | ||
1366 | if (bp_addr + bp_size > memaddr + len) | |
1367 | { | |
1368 | /* Only copy the first part of the breakpoint. */ | |
1369 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1370 | } | |
1371 | ||
1372 | if (readbuf != NULL) | |
1373 | { | |
1374 | /* Verify that the readbuf buffer does not overlap with the | |
1375 | shadow_contents buffer. */ | |
1376 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1377 | || readbuf >= (target_info->shadow_contents | |
1378 | + target_info->shadow_len)); | |
1379 | ||
1380 | /* Update the read buffer with this inserted breakpoint's | |
1381 | shadow. */ | |
1382 | memcpy (readbuf + bp_addr - memaddr, | |
1383 | target_info->shadow_contents + bptoffset, bp_size); | |
1384 | } | |
1385 | else | |
1386 | { | |
1387 | const unsigned char *bp; | |
0d5ed153 MR |
1388 | CORE_ADDR addr = target_info->reqstd_address; |
1389 | int placed_size; | |
9d497a19 PA |
1390 | |
1391 | /* Update the shadow with what we want to write to memory. */ | |
1392 | memcpy (target_info->shadow_contents + bptoffset, | |
1393 | writebuf_org + bp_addr - memaddr, bp_size); | |
1394 | ||
1395 | /* Determine appropriate breakpoint contents and size for this | |
1396 | address. */ | |
0d5ed153 | 1397 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1398 | |
1399 | /* Update the final write buffer with this inserted | |
1400 | breakpoint's INSN. */ | |
1401 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1402 | } | |
1403 | } | |
1404 | ||
8defab1a | 1405 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1406 | by replacing any memory breakpoints with their shadowed contents. |
1407 | ||
35c63cd8 JB |
1408 | If READBUF is not NULL, this buffer must not overlap with any of |
1409 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1410 | a failed assertion internal error will be raised. | |
1411 | ||
876fa593 | 1412 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1413 | bl->address - bp_locations_placed_address_before_address_max |
1414 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1415 | The range we were requested to resolve shadows for is: |
1416 | memaddr ... memaddr + len | |
1417 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1418 | memaddr + len <= (bl->address |
f5336ca5 | 1419 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1420 | and: |
f5336ca5 | 1421 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1422 | |
8defab1a | 1423 | void |
f0ba3972 PA |
1424 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1425 | const gdb_byte *writebuf_org, | |
1426 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1427 | { |
4a64f543 MS |
1428 | /* Left boundary, right boundary and median element of our binary |
1429 | search. */ | |
876fa593 JK |
1430 | unsigned bc_l, bc_r, bc; |
1431 | ||
4a64f543 MS |
1432 | /* Find BC_L which is a leftmost element which may affect BUF |
1433 | content. It is safe to report lower value but a failure to | |
1434 | report higher one. */ | |
876fa593 JK |
1435 | |
1436 | bc_l = 0; | |
f5336ca5 | 1437 | bc_r = bp_locations_count; |
876fa593 JK |
1438 | while (bc_l + 1 < bc_r) |
1439 | { | |
35df4500 | 1440 | struct bp_location *bl; |
876fa593 JK |
1441 | |
1442 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1443 | bl = bp_locations[bc]; |
876fa593 | 1444 | |
4a64f543 MS |
1445 | /* Check first BL->ADDRESS will not overflow due to the added |
1446 | constant. Then advance the left boundary only if we are sure | |
1447 | the BC element can in no way affect the BUF content (MEMADDR | |
1448 | to MEMADDR + LEN range). | |
876fa593 | 1449 | |
f5336ca5 | 1450 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1451 | offset so that we cannot miss a breakpoint with its shadow |
1452 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1453 | |
f5336ca5 | 1454 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1455 | >= bl->address) |
f5336ca5 | 1456 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1457 | <= memaddr)) |
876fa593 JK |
1458 | bc_l = bc; |
1459 | else | |
1460 | bc_r = bc; | |
1461 | } | |
1462 | ||
128070bb PA |
1463 | /* Due to the binary search above, we need to make sure we pick the |
1464 | first location that's at BC_L's address. E.g., if there are | |
1465 | multiple locations at the same address, BC_L may end up pointing | |
1466 | at a duplicate location, and miss the "master"/"inserted" | |
1467 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1468 | B: | |
1469 | ||
1470 | L1@A, L2@A, L3@B, ... | |
1471 | ||
1472 | BC_L could end up pointing at location L2, while the "master" | |
1473 | location could be L1. Since the `loc->inserted' flag is only set | |
1474 | on "master" locations, we'd forget to restore the shadow of L1 | |
1475 | and L2. */ | |
1476 | while (bc_l > 0 | |
f5336ca5 | 1477 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1478 | bc_l--; |
1479 | ||
876fa593 JK |
1480 | /* Now do full processing of the found relevant range of elements. */ |
1481 | ||
f5336ca5 | 1482 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1483 | { |
f5336ca5 | 1484 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1485 | |
35df4500 TJB |
1486 | /* bp_location array has BL->OWNER always non-NULL. */ |
1487 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1488 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1489 | bl->owner->number); |
ffce0d52 | 1490 | |
e5dd4106 | 1491 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1492 | content. */ |
1493 | ||
f5336ca5 PA |
1494 | if (bl->address >= bp_locations_placed_address_before_address_max |
1495 | && memaddr + len <= (bl->address | |
1496 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1497 | break; |
1498 | ||
35df4500 | 1499 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1500 | continue; |
6c95b8df | 1501 | |
9d497a19 PA |
1502 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1503 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1504 | } | |
c906108c | 1505 | } |
9d497a19 | 1506 | |
c906108c | 1507 | \f |
c5aa993b | 1508 | |
b775012e LM |
1509 | /* Return true if BPT is either a software breakpoint or a hardware |
1510 | breakpoint. */ | |
1511 | ||
1512 | int | |
1513 | is_breakpoint (const struct breakpoint *bpt) | |
1514 | { | |
1515 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1516 | || bpt->type == bp_hardware_breakpoint |
1517 | || bpt->type == bp_dprintf); | |
b775012e LM |
1518 | } |
1519 | ||
60e1c644 PA |
1520 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1521 | ||
a5606eee | 1522 | static int |
d77f58be | 1523 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1524 | { |
1525 | return (bpt->type == bp_hardware_watchpoint | |
1526 | || bpt->type == bp_read_watchpoint | |
1527 | || bpt->type == bp_access_watchpoint); | |
1528 | } | |
7270d8f2 | 1529 | |
60e1c644 PA |
1530 | /* Return true if BPT is of any watchpoint kind, hardware or |
1531 | software. */ | |
1532 | ||
3a5c3e22 | 1533 | int |
d77f58be | 1534 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1535 | { |
1536 | return (is_hardware_watchpoint (bpt) | |
1537 | || bpt->type == bp_watchpoint); | |
1538 | } | |
1539 | ||
3a5c3e22 PA |
1540 | /* Returns true if the current thread and its running state are safe |
1541 | to evaluate or update watchpoint B. Watchpoints on local | |
1542 | expressions need to be evaluated in the context of the thread that | |
1543 | was current when the watchpoint was created, and, that thread needs | |
1544 | to be stopped to be able to select the correct frame context. | |
1545 | Watchpoints on global expressions can be evaluated on any thread, | |
1546 | and in any state. It is presently left to the target allowing | |
1547 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1548 | |
1549 | static int | |
3a5c3e22 | 1550 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1551 | { |
c1fc2657 | 1552 | return (b->pspace == current_program_space |
d7e15655 TT |
1553 | && (b->watchpoint_thread == null_ptid |
1554 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1555 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1556 | } |
1557 | ||
d0fb5eae JK |
1558 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1559 | associated bp_watchpoint_scope breakpoint. */ | |
1560 | ||
1561 | static void | |
3a5c3e22 | 1562 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1563 | { |
c1fc2657 | 1564 | if (w->related_breakpoint != w) |
d0fb5eae | 1565 | { |
c1fc2657 SM |
1566 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1567 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1568 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1569 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1570 | w->related_breakpoint = w; | |
d0fb5eae | 1571 | } |
c1fc2657 | 1572 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1573 | } |
1574 | ||
bb9d5f81 PP |
1575 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1576 | watchpoint W. */ | |
1577 | ||
1578 | static struct value * | |
1579 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1580 | { | |
1581 | struct value *bit_val; | |
1582 | ||
1583 | if (val == NULL) | |
1584 | return NULL; | |
1585 | ||
1586 | bit_val = allocate_value (value_type (val)); | |
1587 | ||
1588 | unpack_value_bitfield (bit_val, | |
1589 | w->val_bitpos, | |
1590 | w->val_bitsize, | |
1591 | value_contents_for_printing (val), | |
1592 | value_offset (val), | |
1593 | val); | |
1594 | ||
1595 | return bit_val; | |
1596 | } | |
1597 | ||
c6d81124 PA |
1598 | /* Allocate a dummy location and add it to B, which must be a software |
1599 | watchpoint. This is required because even if a software watchpoint | |
1600 | is not watching any memory, bpstat_stop_status requires a location | |
1601 | to be able to report stops. */ | |
1602 | ||
1603 | static void | |
1604 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1605 | struct program_space *pspace) | |
1606 | { | |
1607 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1608 | ||
1609 | b->loc = allocate_bp_location (b); | |
1610 | b->loc->pspace = pspace; | |
1611 | b->loc->address = -1; | |
1612 | b->loc->length = -1; | |
1613 | } | |
1614 | ||
1615 | /* Returns true if B is a software watchpoint that is not watching any | |
1616 | memory (e.g., "watch $pc"). */ | |
1617 | ||
1618 | static int | |
1619 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1620 | { | |
1621 | return (b->type == bp_watchpoint | |
1622 | && b->loc != NULL | |
1623 | && b->loc->next == NULL | |
1624 | && b->loc->address == -1 | |
1625 | && b->loc->length == -1); | |
1626 | } | |
1627 | ||
567e1b4e JB |
1628 | /* Assuming that B is a watchpoint: |
1629 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1630 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1631 | - Evaluate the condition if there is one, and store the result |
1632 | in b->loc->cond. | |
a5606eee VP |
1633 | - Update the list of values that must be watched in B->loc. |
1634 | ||
4a64f543 MS |
1635 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1636 | nothing. If this is local watchpoint that is out of scope, delete | |
1637 | it. | |
1638 | ||
1639 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1640 | removed + inserted on each stop here. Normal breakpoints must | |
1641 | never be removed because they might be missed by a running thread | |
1642 | when debugging in non-stop mode. On the other hand, hardware | |
1643 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1644 | to each LWP since they are stored in each LWP's hardware debug | |
1645 | registers. Therefore, such LWP must be stopped first in order to | |
1646 | be able to modify its hardware watchpoints. | |
1647 | ||
1648 | Hardware watchpoints must be reset exactly once after being | |
1649 | presented to the user. It cannot be done sooner, because it would | |
1650 | reset the data used to present the watchpoint hit to the user. And | |
1651 | it must not be done later because it could display the same single | |
1652 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1653 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1654 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1655 | not user-visible - its hit is suppressed if the memory content has | |
1656 | not changed. | |
1657 | ||
1658 | The following constraints influence the location where we can reset | |
1659 | hardware watchpoints: | |
1660 | ||
1661 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1662 | called several times when GDB stops. | |
1663 | ||
1664 | [linux] | |
1665 | * Multiple hardware watchpoints can be hit at the same time, | |
1666 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1667 | hit at a time as the reason for stopping, and all the other hits | |
1668 | are presented later, one after the other, each time the user | |
1669 | requests the execution to be resumed. Execution is not resumed | |
1670 | for the threads still having pending hit event stored in | |
1671 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1672 | the inferior on the first stop the thread hit event is kept being | |
1673 | reported from its cached value by linux_nat_stopped_data_address | |
1674 | until the real thread resume happens after the watchpoint gets | |
1675 | presented and thus its LWP_INFO->STATUS gets reset. | |
1676 | ||
1677 | Therefore the hardware watchpoint hit can get safely reset on the | |
1678 | watchpoint removal from inferior. */ | |
a79d3c27 | 1679 | |
b40ce68a | 1680 | static void |
3a5c3e22 | 1681 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1682 | { |
a5606eee | 1683 | int within_current_scope; |
a5606eee | 1684 | struct frame_id saved_frame_id; |
66076460 | 1685 | int frame_saved; |
a5606eee | 1686 | |
f6bc2008 PA |
1687 | /* If this is a local watchpoint, we only want to check if the |
1688 | watchpoint frame is in scope if the current thread is the thread | |
1689 | that was used to create the watchpoint. */ | |
1690 | if (!watchpoint_in_thread_scope (b)) | |
1691 | return; | |
1692 | ||
c1fc2657 | 1693 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1694 | return; |
1695 | ||
66076460 | 1696 | frame_saved = 0; |
a5606eee VP |
1697 | |
1698 | /* Determine if the watchpoint is within scope. */ | |
1699 | if (b->exp_valid_block == NULL) | |
1700 | within_current_scope = 1; | |
1701 | else | |
1702 | { | |
b5db5dfc UW |
1703 | struct frame_info *fi = get_current_frame (); |
1704 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1705 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1706 | ||
c9cf6e20 MG |
1707 | /* If we're at a point where the stack has been destroyed |
1708 | (e.g. in a function epilogue), unwinding may not work | |
1709 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1710 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1711 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1712 | return; |
66076460 DJ |
1713 | |
1714 | /* Save the current frame's ID so we can restore it after | |
1715 | evaluating the watchpoint expression on its own frame. */ | |
1716 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1717 | took a frame parameter, so that we didn't have to change the | |
1718 | selected frame. */ | |
1719 | frame_saved = 1; | |
1720 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1721 | ||
a5606eee VP |
1722 | fi = frame_find_by_id (b->watchpoint_frame); |
1723 | within_current_scope = (fi != NULL); | |
1724 | if (within_current_scope) | |
1725 | select_frame (fi); | |
1726 | } | |
1727 | ||
b5db5dfc UW |
1728 | /* We don't free locations. They are stored in the bp_location array |
1729 | and update_global_location_list will eventually delete them and | |
1730 | remove breakpoints if needed. */ | |
c1fc2657 | 1731 | b->loc = NULL; |
b5db5dfc | 1732 | |
a5606eee VP |
1733 | if (within_current_scope && reparse) |
1734 | { | |
bbc13ae3 | 1735 | const char *s; |
d63d0675 | 1736 | |
4d01a485 | 1737 | b->exp.reset (); |
d63d0675 | 1738 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1739 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1740 | /* If the meaning of expression itself changed, the old value is |
1741 | no longer relevant. We don't want to report a watchpoint hit | |
1742 | to the user when the old value and the new value may actually | |
1743 | be completely different objects. */ | |
fa4727a6 DJ |
1744 | b->val = NULL; |
1745 | b->val_valid = 0; | |
60e1c644 PA |
1746 | |
1747 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1748 | expression is stored in the breakpoint object, not in the | |
1749 | locations (re)created below. */ | |
c1fc2657 | 1750 | if (b->cond_string != NULL) |
60e1c644 | 1751 | { |
4d01a485 | 1752 | b->cond_exp.reset (); |
60e1c644 | 1753 | |
c1fc2657 | 1754 | s = b->cond_string; |
1bb9788d | 1755 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1756 | } |
a5606eee | 1757 | } |
a5606eee VP |
1758 | |
1759 | /* If we failed to parse the expression, for example because | |
1760 | it refers to a global variable in a not-yet-loaded shared library, | |
1761 | don't try to insert watchpoint. We don't automatically delete | |
1762 | such watchpoint, though, since failure to parse expression | |
1763 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1764 | if (!target_has_execution) |
2d134ed3 PA |
1765 | { |
1766 | /* Without execution, memory can't change. No use to try and | |
1767 | set watchpoint locations. The watchpoint will be reset when | |
1768 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1769 | if (!can_use_hw_watchpoints) |
1770 | { | |
c1fc2657 SM |
1771 | if (b->ops->works_in_software_mode (b)) |
1772 | b->type = bp_watchpoint; | |
e8369a73 | 1773 | else |
638aa5a1 AB |
1774 | error (_("Can't set read/access watchpoint when " |
1775 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1776 | } |
2d134ed3 PA |
1777 | } |
1778 | else if (within_current_scope && b->exp) | |
a5606eee | 1779 | { |
0cf6dd15 | 1780 | int pc = 0; |
a6535de1 | 1781 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1782 | struct value *v, *result; |
2d134ed3 | 1783 | struct program_space *frame_pspace; |
a5606eee | 1784 | |
4d01a485 | 1785 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1786 | |
a5606eee VP |
1787 | /* Avoid setting b->val if it's already set. The meaning of |
1788 | b->val is 'the last value' user saw, and we should update | |
1789 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1790 | happens, the code that reports it updates b->val directly. |
1791 | We don't keep track of the memory value for masked | |
1792 | watchpoints. */ | |
c1fc2657 | 1793 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1794 | { |
bb9d5f81 | 1795 | if (b->val_bitsize != 0) |
850645cf TT |
1796 | v = extract_bitfield_from_watchpoint_value (b, v); |
1797 | b->val = release_value (v); | |
fa4727a6 DJ |
1798 | b->val_valid = 1; |
1799 | } | |
a5606eee | 1800 | |
2d134ed3 PA |
1801 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1802 | ||
a5606eee | 1803 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1804 | gdb_assert (!val_chain.empty ()); |
1805 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1806 | { |
a6535de1 TT |
1807 | v = iter.get (); |
1808 | ||
a5606eee VP |
1809 | /* If it's a memory location, and GDB actually needed |
1810 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1811 | must watch it. If the first value returned is |
1812 | still lazy, that means an error occurred reading it; | |
1813 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1814 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1815 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1816 | { |
1817 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1818 | |
a5606eee VP |
1819 | /* We only watch structs and arrays if user asked |
1820 | for it explicitly, never if they just happen to | |
1821 | appear in the middle of some value chain. */ | |
fa4727a6 | 1822 | if (v == result |
a5606eee VP |
1823 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1824 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1825 | { | |
1826 | CORE_ADDR addr; | |
f486487f | 1827 | enum target_hw_bp_type type; |
a5606eee | 1828 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1829 | int bitpos = 0, bitsize = 0; |
1830 | ||
1831 | if (value_bitsize (v) != 0) | |
1832 | { | |
1833 | /* Extract the bit parameters out from the bitfield | |
1834 | sub-expression. */ | |
1835 | bitpos = value_bitpos (v); | |
1836 | bitsize = value_bitsize (v); | |
1837 | } | |
1838 | else if (v == result && b->val_bitsize != 0) | |
1839 | { | |
1840 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1841 | lvalue whose bit parameters are saved in the fields | |
1842 | VAL_BITPOS and VAL_BITSIZE. */ | |
1843 | bitpos = b->val_bitpos; | |
1844 | bitsize = b->val_bitsize; | |
1845 | } | |
a5606eee | 1846 | |
42ae5230 | 1847 | addr = value_address (v); |
bb9d5f81 PP |
1848 | if (bitsize != 0) |
1849 | { | |
1850 | /* Skip the bytes that don't contain the bitfield. */ | |
1851 | addr += bitpos / 8; | |
1852 | } | |
1853 | ||
a5606eee | 1854 | type = hw_write; |
c1fc2657 | 1855 | if (b->type == bp_read_watchpoint) |
a5606eee | 1856 | type = hw_read; |
c1fc2657 | 1857 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1858 | type = hw_access; |
3a5c3e22 | 1859 | |
c1fc2657 SM |
1860 | loc = allocate_bp_location (b); |
1861 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1862 | ; |
1863 | *tmp = loc; | |
a6d9a66e | 1864 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1865 | |
1866 | loc->pspace = frame_pspace; | |
f17d9474 | 1867 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1868 | |
1869 | if (bitsize != 0) | |
1870 | { | |
1871 | /* Just cover the bytes that make up the bitfield. */ | |
1872 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1873 | } | |
1874 | else | |
1875 | loc->length = TYPE_LENGTH (value_type (v)); | |
1876 | ||
a5606eee VP |
1877 | loc->watchpoint_type = type; |
1878 | } | |
1879 | } | |
9fa40276 TJB |
1880 | } |
1881 | ||
1882 | /* Change the type of breakpoint between hardware assisted or | |
1883 | an ordinary watchpoint depending on the hardware support | |
1884 | and free hardware slots. REPARSE is set when the inferior | |
1885 | is started. */ | |
a9634178 | 1886 | if (reparse) |
9fa40276 | 1887 | { |
e09342b5 | 1888 | int reg_cnt; |
9fa40276 TJB |
1889 | enum bp_loc_type loc_type; |
1890 | struct bp_location *bl; | |
a5606eee | 1891 | |
a9634178 | 1892 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1893 | |
1894 | if (reg_cnt) | |
9fa40276 TJB |
1895 | { |
1896 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1897 | enum bptype type; |
9fa40276 | 1898 | |
a9634178 TJB |
1899 | /* Use an exact watchpoint when there's only one memory region to be |
1900 | watched, and only one debug register is needed to watch it. */ | |
1901 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1902 | ||
9fa40276 | 1903 | /* We need to determine how many resources are already |
e09342b5 TJB |
1904 | used for all other hardware watchpoints plus this one |
1905 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1906 | this watchpoint in as well. */ |
1907 | ||
1908 | /* If this is a software watchpoint, we try to turn it | |
1909 | to a hardware one -- count resources as if B was of | |
1910 | hardware watchpoint type. */ | |
c1fc2657 | 1911 | type = b->type; |
a1398e0c PA |
1912 | if (type == bp_watchpoint) |
1913 | type = bp_hardware_watchpoint; | |
1914 | ||
1915 | /* This watchpoint may or may not have been placed on | |
1916 | the list yet at this point (it won't be in the list | |
1917 | if we're trying to create it for the first time, | |
1918 | through watch_command), so always account for it | |
1919 | manually. */ | |
1920 | ||
1921 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1922 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1923 | |
1924 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1925 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1926 | |
1927 | target_resources_ok | |
1928 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1929 | if (target_resources_ok <= 0) |
a9634178 | 1930 | { |
c1fc2657 | 1931 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1932 | |
1933 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1934 | error (_("Target does not support this type of " |
1935 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1936 | else if (target_resources_ok < 0 && !sw_mode) |
1937 | error (_("There are not enough available hardware " | |
1938 | "resources for this watchpoint.")); | |
a1398e0c PA |
1939 | |
1940 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1941 | b->type = bp_watchpoint; |
a1398e0c PA |
1942 | } |
1943 | else | |
1944 | { | |
1945 | /* If this was a software watchpoint, we've just | |
1946 | found we have enough resources to turn it to a | |
1947 | hardware watchpoint. Otherwise, this is a | |
1948 | nop. */ | |
c1fc2657 | 1949 | b->type = type; |
a9634178 | 1950 | } |
9fa40276 | 1951 | } |
c1fc2657 | 1952 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1953 | { |
1954 | if (!can_use_hw_watchpoints) | |
1955 | error (_("Can't set read/access watchpoint when " | |
1956 | "hardware watchpoints are disabled.")); | |
1957 | else | |
1958 | error (_("Expression cannot be implemented with " | |
1959 | "read/access watchpoint.")); | |
1960 | } | |
9fa40276 | 1961 | else |
c1fc2657 | 1962 | b->type = bp_watchpoint; |
9fa40276 | 1963 | |
c1fc2657 | 1964 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1965 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1966 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1967 | bl->loc_type = loc_type; |
1968 | } | |
1969 | ||
c7437ca6 PA |
1970 | /* If a software watchpoint is not watching any memory, then the |
1971 | above left it without any location set up. But, | |
1972 | bpstat_stop_status requires a location to be able to report | |
1973 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1974 | if (b->type == bp_watchpoint && b->loc == NULL) |
1975 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1976 | } |
1977 | else if (!within_current_scope) | |
7270d8f2 | 1978 | { |
ac74f770 MS |
1979 | printf_filtered (_("\ |
1980 | Watchpoint %d deleted because the program has left the block\n\ | |
1981 | in which its expression is valid.\n"), | |
c1fc2657 | 1982 | b->number); |
d0fb5eae | 1983 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1984 | } |
a5606eee VP |
1985 | |
1986 | /* Restore the selected frame. */ | |
66076460 DJ |
1987 | if (frame_saved) |
1988 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1989 | } |
1990 | ||
a5606eee | 1991 | |
74960c60 | 1992 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1993 | inserted in the inferior. We don't differentiate the type of BL's owner |
1994 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1995 | breakpoint_ops is not defined, because in insert_bp_location, | |
1996 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1997 | static int |
35df4500 | 1998 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1999 | { |
35df4500 | 2000 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2001 | return 0; |
2002 | ||
35df4500 | 2003 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2004 | return 0; |
2005 | ||
35df4500 | 2006 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2007 | return 0; |
2008 | ||
f8eba3c6 TT |
2009 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2010 | return 0; | |
2011 | ||
56710373 PA |
2012 | /* This is set for example, when we're attached to the parent of a |
2013 | vfork, and have detached from the child. The child is running | |
2014 | free, and we expect it to do an exec or exit, at which point the | |
2015 | OS makes the parent schedulable again (and the target reports | |
2016 | that the vfork is done). Until the child is done with the shared | |
2017 | memory region, do not insert breakpoints in the parent, otherwise | |
2018 | the child could still trip on the parent's breakpoints. Since | |
2019 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2020 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2021 | return 0; |
2022 | ||
31e77af2 | 2023 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2024 | location, except if the breakpoint is a single-step breakpoint, |
2025 | and the breakpoint's thread is the thread which is stepping past | |
2026 | a breakpoint. */ | |
31e77af2 PA |
2027 | if ((bl->loc_type == bp_loc_software_breakpoint |
2028 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2029 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2030 | bl->address) |
2031 | /* The single-step breakpoint may be inserted at the location | |
2032 | we're trying to step if the instruction branches to itself. | |
2033 | However, the instruction won't be executed at all and it may | |
2034 | break the semantics of the instruction, for example, the | |
2035 | instruction is a conditional branch or updates some flags. | |
2036 | We can't fix it unless GDB is able to emulate the instruction | |
2037 | or switch to displaced stepping. */ | |
2038 | && !(bl->owner->type == bp_single_step | |
2039 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2040 | { |
2041 | if (debug_infrun) | |
2042 | { | |
2043 | fprintf_unfiltered (gdb_stdlog, | |
2044 | "infrun: skipping breakpoint: " | |
2045 | "stepping past insn at: %s\n", | |
2046 | paddress (bl->gdbarch, bl->address)); | |
2047 | } | |
2048 | return 0; | |
2049 | } | |
31e77af2 | 2050 | |
963f9c80 PA |
2051 | /* Don't insert watchpoints if we're trying to step past the |
2052 | instruction that triggered one. */ | |
2053 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2054 | && stepping_past_nonsteppable_watchpoint ()) | |
2055 | { | |
2056 | if (debug_infrun) | |
2057 | { | |
2058 | fprintf_unfiltered (gdb_stdlog, | |
2059 | "infrun: stepping past non-steppable watchpoint. " | |
2060 | "skipping watchpoint at %s:%d\n", | |
2061 | paddress (bl->gdbarch, bl->address), | |
2062 | bl->length); | |
2063 | } | |
2064 | return 0; | |
2065 | } | |
2066 | ||
74960c60 VP |
2067 | return 1; |
2068 | } | |
2069 | ||
934709f0 PW |
2070 | /* Same as should_be_inserted but does the check assuming |
2071 | that the location is not duplicated. */ | |
2072 | ||
2073 | static int | |
2074 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2075 | { | |
2076 | int result; | |
2077 | const int save_duplicate = bl->duplicate; | |
2078 | ||
2079 | bl->duplicate = 0; | |
2080 | result = should_be_inserted (bl); | |
2081 | bl->duplicate = save_duplicate; | |
2082 | return result; | |
2083 | } | |
2084 | ||
b775012e LM |
2085 | /* Parses a conditional described by an expression COND into an |
2086 | agent expression bytecode suitable for evaluation | |
2087 | by the bytecode interpreter. Return NULL if there was | |
2088 | any error during parsing. */ | |
2089 | ||
833177a4 | 2090 | static agent_expr_up |
b775012e LM |
2091 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2092 | { | |
833177a4 | 2093 | if (cond == NULL) |
b775012e LM |
2094 | return NULL; |
2095 | ||
833177a4 PA |
2096 | agent_expr_up aexpr; |
2097 | ||
b775012e LM |
2098 | /* We don't want to stop processing, so catch any errors |
2099 | that may show up. */ | |
a70b8144 | 2100 | try |
b775012e | 2101 | { |
036e657b | 2102 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2103 | } |
2104 | ||
230d2906 | 2105 | catch (const gdb_exception_error &ex) |
b775012e LM |
2106 | { |
2107 | /* If we got here, it means the condition could not be parsed to a valid | |
2108 | bytecode expression and thus can't be evaluated on the target's side. | |
2109 | It's no use iterating through the conditions. */ | |
b775012e LM |
2110 | } |
2111 | ||
2112 | /* We have a valid agent expression. */ | |
2113 | return aexpr; | |
2114 | } | |
2115 | ||
2116 | /* Based on location BL, create a list of breakpoint conditions to be | |
2117 | passed on to the target. If we have duplicated locations with different | |
2118 | conditions, we will add such conditions to the list. The idea is that the | |
2119 | target will evaluate the list of conditions and will only notify GDB when | |
2120 | one of them is true. */ | |
2121 | ||
2122 | static void | |
2123 | build_target_condition_list (struct bp_location *bl) | |
2124 | { | |
2125 | struct bp_location **locp = NULL, **loc2p; | |
2126 | int null_condition_or_parse_error = 0; | |
2127 | int modified = bl->needs_update; | |
2128 | struct bp_location *loc; | |
2129 | ||
8b4f3082 | 2130 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2131 | bl->target_info.conditions.clear (); |
8b4f3082 | 2132 | |
b775012e LM |
2133 | /* This is only meaningful if the target is |
2134 | evaluating conditions and if the user has | |
2135 | opted for condition evaluation on the target's | |
2136 | side. */ | |
2137 | if (gdb_evaluates_breakpoint_condition_p () | |
2138 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2139 | return; | |
2140 | ||
2141 | /* Do a first pass to check for locations with no assigned | |
2142 | conditions or conditions that fail to parse to a valid agent expression | |
2143 | bytecode. If any of these happen, then it's no use to send conditions | |
2144 | to the target since this location will always trigger and generate a | |
2145 | response back to GDB. */ | |
2146 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2147 | { | |
2148 | loc = (*loc2p); | |
2149 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2150 | { | |
2151 | if (modified) | |
2152 | { | |
b775012e LM |
2153 | /* Re-parse the conditions since something changed. In that |
2154 | case we already freed the condition bytecodes (see | |
2155 | force_breakpoint_reinsertion). We just | |
2156 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2157 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2158 | loc->cond.get ()); | |
b775012e LM |
2159 | } |
2160 | ||
2161 | /* If we have a NULL bytecode expression, it means something | |
2162 | went wrong or we have a null condition expression. */ | |
2163 | if (!loc->cond_bytecode) | |
2164 | { | |
2165 | null_condition_or_parse_error = 1; | |
2166 | break; | |
2167 | } | |
2168 | } | |
2169 | } | |
2170 | ||
2171 | /* If any of these happened, it means we will have to evaluate the conditions | |
2172 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2173 | for all the other duplicate locations, thus we free all of them here. | |
2174 | ||
2175 | This is so we have a finer control over which locations' conditions are | |
2176 | being evaluated by GDB or the remote stub. */ | |
2177 | if (null_condition_or_parse_error) | |
2178 | { | |
2179 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2180 | { | |
2181 | loc = (*loc2p); | |
2182 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2183 | { | |
2184 | /* Only go as far as the first NULL bytecode is | |
2185 | located. */ | |
2186 | if (!loc->cond_bytecode) | |
2187 | return; | |
2188 | ||
833177a4 | 2189 | loc->cond_bytecode.reset (); |
b775012e LM |
2190 | } |
2191 | } | |
2192 | } | |
2193 | ||
2194 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2195 | for this location's address. */ | |
2196 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2197 | { | |
2198 | loc = (*loc2p); | |
2199 | if (loc->cond | |
2200 | && is_breakpoint (loc->owner) | |
2201 | && loc->pspace->num == bl->pspace->num | |
2202 | && loc->owner->enable_state == bp_enabled | |
2203 | && loc->enabled) | |
3cde5c42 PA |
2204 | { |
2205 | /* Add the condition to the vector. This will be used later | |
2206 | to send the conditions to the target. */ | |
2207 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2208 | } | |
b775012e LM |
2209 | } |
2210 | ||
2211 | return; | |
2212 | } | |
2213 | ||
d3ce09f5 SS |
2214 | /* Parses a command described by string CMD into an agent expression |
2215 | bytecode suitable for evaluation by the bytecode interpreter. | |
2216 | Return NULL if there was any error during parsing. */ | |
2217 | ||
833177a4 | 2218 | static agent_expr_up |
d3ce09f5 SS |
2219 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2220 | { | |
bbc13ae3 KS |
2221 | const char *cmdrest; |
2222 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2223 | struct gdbarch *gdbarch = get_current_arch (); |
2224 | ||
833177a4 | 2225 | if (cmd == NULL) |
d3ce09f5 SS |
2226 | return NULL; |
2227 | ||
2228 | cmdrest = cmd; | |
2229 | ||
2230 | if (*cmdrest == ',') | |
2231 | ++cmdrest; | |
f1735a53 | 2232 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2233 | |
2234 | if (*cmdrest++ != '"') | |
2235 | error (_("No format string following the location")); | |
2236 | ||
2237 | format_start = cmdrest; | |
2238 | ||
8e481c3b | 2239 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2240 | |
2241 | format_end = cmdrest; | |
2242 | ||
2243 | if (*cmdrest++ != '"') | |
2244 | error (_("Bad format string, non-terminated '\"'.")); | |
2245 | ||
f1735a53 | 2246 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2247 | |
2248 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2249 | error (_("Invalid argument syntax")); | |
2250 | ||
2251 | if (*cmdrest == ',') | |
2252 | cmdrest++; | |
f1735a53 | 2253 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2254 | |
2255 | /* For each argument, make an expression. */ | |
2256 | ||
8e481c3b | 2257 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2258 | while (*cmdrest != '\0') |
2259 | { | |
bbc13ae3 | 2260 | const char *cmd1; |
d3ce09f5 SS |
2261 | |
2262 | cmd1 = cmdrest; | |
4d01a485 | 2263 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2264 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2265 | cmdrest = cmd1; |
2266 | if (*cmdrest == ',') | |
2267 | ++cmdrest; | |
2268 | } | |
2269 | ||
833177a4 PA |
2270 | agent_expr_up aexpr; |
2271 | ||
d3ce09f5 SS |
2272 | /* We don't want to stop processing, so catch any errors |
2273 | that may show up. */ | |
a70b8144 | 2274 | try |
d3ce09f5 | 2275 | { |
036e657b JB |
2276 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2277 | format_start, format_end - format_start, | |
8e481c3b | 2278 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2279 | } |
230d2906 | 2280 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2281 | { |
2282 | /* If we got here, it means the command could not be parsed to a valid | |
2283 | bytecode expression and thus can't be evaluated on the target's side. | |
2284 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2285 | } |
492d29ea | 2286 | |
d3ce09f5 SS |
2287 | /* We have a valid agent expression, return it. */ |
2288 | return aexpr; | |
2289 | } | |
2290 | ||
2291 | /* Based on location BL, create a list of breakpoint commands to be | |
2292 | passed on to the target. If we have duplicated locations with | |
2293 | different commands, we will add any such to the list. */ | |
2294 | ||
2295 | static void | |
2296 | build_target_command_list (struct bp_location *bl) | |
2297 | { | |
2298 | struct bp_location **locp = NULL, **loc2p; | |
2299 | int null_command_or_parse_error = 0; | |
2300 | int modified = bl->needs_update; | |
2301 | struct bp_location *loc; | |
2302 | ||
3cde5c42 PA |
2303 | /* Clear commands left over from a previous insert. */ |
2304 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2305 | |
41fac0cf | 2306 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2307 | return; |
2308 | ||
41fac0cf PA |
2309 | /* For now, limit to agent-style dprintf breakpoints. */ |
2310 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2311 | return; |
2312 | ||
41fac0cf PA |
2313 | /* For now, if we have any duplicate location that isn't a dprintf, |
2314 | don't install the target-side commands, as that would make the | |
2315 | breakpoint not be reported to the core, and we'd lose | |
2316 | control. */ | |
2317 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2318 | { | |
2319 | loc = (*loc2p); | |
2320 | if (is_breakpoint (loc->owner) | |
2321 | && loc->pspace->num == bl->pspace->num | |
2322 | && loc->owner->type != bp_dprintf) | |
2323 | return; | |
2324 | } | |
2325 | ||
d3ce09f5 SS |
2326 | /* Do a first pass to check for locations with no assigned |
2327 | conditions or conditions that fail to parse to a valid agent expression | |
2328 | bytecode. If any of these happen, then it's no use to send conditions | |
2329 | to the target since this location will always trigger and generate a | |
2330 | response back to GDB. */ | |
2331 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2332 | { | |
2333 | loc = (*loc2p); | |
2334 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2335 | { | |
2336 | if (modified) | |
2337 | { | |
d3ce09f5 SS |
2338 | /* Re-parse the commands since something changed. In that |
2339 | case we already freed the command bytecodes (see | |
2340 | force_breakpoint_reinsertion). We just | |
2341 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2342 | loc->cmd_bytecode |
2343 | = parse_cmd_to_aexpr (bl->address, | |
2344 | loc->owner->extra_string); | |
d3ce09f5 SS |
2345 | } |
2346 | ||
2347 | /* If we have a NULL bytecode expression, it means something | |
2348 | went wrong or we have a null command expression. */ | |
2349 | if (!loc->cmd_bytecode) | |
2350 | { | |
2351 | null_command_or_parse_error = 1; | |
2352 | break; | |
2353 | } | |
2354 | } | |
2355 | } | |
2356 | ||
2357 | /* If anything failed, then we're not doing target-side commands, | |
2358 | and so clean up. */ | |
2359 | if (null_command_or_parse_error) | |
2360 | { | |
2361 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2362 | { | |
2363 | loc = (*loc2p); | |
2364 | if (is_breakpoint (loc->owner) | |
2365 | && loc->pspace->num == bl->pspace->num) | |
2366 | { | |
2367 | /* Only go as far as the first NULL bytecode is | |
2368 | located. */ | |
40fb6c5e | 2369 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2370 | return; |
2371 | ||
833177a4 | 2372 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2373 | } |
2374 | } | |
2375 | } | |
2376 | ||
2377 | /* No NULL commands or failed bytecode generation. Build a command list | |
2378 | for this location's address. */ | |
2379 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2380 | { | |
2381 | loc = (*loc2p); | |
2382 | if (loc->owner->extra_string | |
2383 | && is_breakpoint (loc->owner) | |
2384 | && loc->pspace->num == bl->pspace->num | |
2385 | && loc->owner->enable_state == bp_enabled | |
2386 | && loc->enabled) | |
3cde5c42 PA |
2387 | { |
2388 | /* Add the command to the vector. This will be used later | |
2389 | to send the commands to the target. */ | |
2390 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2391 | } | |
d3ce09f5 SS |
2392 | } |
2393 | ||
2394 | bl->target_info.persist = 0; | |
2395 | /* Maybe flag this location as persistent. */ | |
2396 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2397 | bl->target_info.persist = 1; | |
2398 | } | |
2399 | ||
833b7ab5 YQ |
2400 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2401 | of breakpoint according to ADDR except single-step breakpoint. | |
2402 | Get the kind of single-step breakpoint according to the current | |
2403 | registers state. */ | |
cd6c3b4f YQ |
2404 | |
2405 | static int | |
2406 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2407 | { | |
833b7ab5 YQ |
2408 | if (bl->owner->type == bp_single_step) |
2409 | { | |
2410 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2411 | struct regcache *regcache; | |
2412 | ||
00431a78 | 2413 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2414 | |
2415 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2416 | regcache, addr); | |
2417 | } | |
2418 | else | |
2419 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2420 | } |
2421 | ||
35df4500 TJB |
2422 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2423 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2424 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2425 | Returns 0 for success, 1 if the bp_location type is not supported or |
2426 | -1 for failure. | |
879bfdc2 | 2427 | |
4a64f543 MS |
2428 | NOTE drow/2003-09-09: This routine could be broken down to an |
2429 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2430 | static int |
35df4500 | 2431 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2432 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2433 | int *disabled_breaks, |
dd61ec5c MW |
2434 | int *hw_breakpoint_error, |
2435 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2436 | { |
cc06b668 | 2437 | gdb_exception bp_excpt; |
879bfdc2 | 2438 | |
b775012e | 2439 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2440 | return 0; |
2441 | ||
35c63cd8 JB |
2442 | /* Note we don't initialize bl->target_info, as that wipes out |
2443 | the breakpoint location's shadow_contents if the breakpoint | |
2444 | is still inserted at that location. This in turn breaks | |
2445 | target_read_memory which depends on these buffers when | |
2446 | a memory read is requested at the breakpoint location: | |
2447 | Once the target_info has been wiped, we fail to see that | |
2448 | we have a breakpoint inserted at that address and thus | |
2449 | read the breakpoint instead of returning the data saved in | |
2450 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2451 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2452 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2453 | bl->target_info.length = bl->length; |
8181d85f | 2454 | |
b775012e LM |
2455 | /* When working with target-side conditions, we must pass all the conditions |
2456 | for the same breakpoint address down to the target since GDB will not | |
2457 | insert those locations. With a list of breakpoint conditions, the target | |
2458 | can decide when to stop and notify GDB. */ | |
2459 | ||
2460 | if (is_breakpoint (bl->owner)) | |
2461 | { | |
2462 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2463 | build_target_command_list (bl); |
2464 | /* Reset the modification marker. */ | |
b775012e LM |
2465 | bl->needs_update = 0; |
2466 | } | |
2467 | ||
35df4500 TJB |
2468 | if (bl->loc_type == bp_loc_software_breakpoint |
2469 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2470 | { |
35df4500 | 2471 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2472 | { |
2473 | /* If the explicitly specified breakpoint type | |
2474 | is not hardware breakpoint, check the memory map to see | |
2475 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2476 | |
765dc015 VP |
2477 | Two important cases are: |
2478 | - location type is not hardware breakpoint, memory | |
2479 | is readonly. We change the type of the location to | |
2480 | hardware breakpoint. | |
4a64f543 MS |
2481 | - location type is hardware breakpoint, memory is |
2482 | read-write. This means we've previously made the | |
2483 | location hardware one, but then the memory map changed, | |
2484 | so we undo. | |
765dc015 | 2485 | |
4a64f543 MS |
2486 | When breakpoints are removed, remove_breakpoints will use |
2487 | location types we've just set here, the only possible | |
2488 | problem is that memory map has changed during running | |
2489 | program, but it's not going to work anyway with current | |
2490 | gdb. */ | |
765dc015 | 2491 | struct mem_region *mr |
0d5ed153 | 2492 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2493 | |
2494 | if (mr) | |
2495 | { | |
2496 | if (automatic_hardware_breakpoints) | |
2497 | { | |
765dc015 VP |
2498 | enum bp_loc_type new_type; |
2499 | ||
2500 | if (mr->attrib.mode != MEM_RW) | |
2501 | new_type = bp_loc_hardware_breakpoint; | |
2502 | else | |
2503 | new_type = bp_loc_software_breakpoint; | |
2504 | ||
35df4500 | 2505 | if (new_type != bl->loc_type) |
765dc015 VP |
2506 | { |
2507 | static int said = 0; | |
cc59ec59 | 2508 | |
35df4500 | 2509 | bl->loc_type = new_type; |
765dc015 VP |
2510 | if (!said) |
2511 | { | |
3e43a32a MS |
2512 | fprintf_filtered (gdb_stdout, |
2513 | _("Note: automatically using " | |
2514 | "hardware breakpoints for " | |
2515 | "read-only addresses.\n")); | |
765dc015 VP |
2516 | said = 1; |
2517 | } | |
2518 | } | |
2519 | } | |
35df4500 | 2520 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2521 | && mr->attrib.mode != MEM_RW) |
2522 | { | |
2523 | fprintf_unfiltered (tmp_error_stream, | |
2524 | _("Cannot insert breakpoint %d.\n" | |
2525 | "Cannot set software breakpoint " | |
2526 | "at read-only address %s\n"), | |
2527 | bl->owner->number, | |
2528 | paddress (bl->gdbarch, bl->address)); | |
2529 | return 1; | |
2530 | } | |
765dc015 VP |
2531 | } |
2532 | } | |
2533 | ||
879bfdc2 DJ |
2534 | /* First check to see if we have to handle an overlay. */ |
2535 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2536 | || bl->section == NULL |
2537 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2538 | { |
2539 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2540 | try |
dd61ec5c | 2541 | { |
0000e5cc PA |
2542 | int val; |
2543 | ||
dd61ec5c | 2544 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2545 | if (val) |
688fca4f | 2546 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2547 | } |
94aeb44b | 2548 | catch (gdb_exception &e) |
dd61ec5c | 2549 | { |
94aeb44b | 2550 | bp_excpt = std::move (e); |
dd61ec5c | 2551 | } |
879bfdc2 DJ |
2552 | } |
2553 | else | |
2554 | { | |
4a64f543 | 2555 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2556 | Shall we set a breakpoint at the LMA? */ |
2557 | if (!overlay_events_enabled) | |
2558 | { | |
2559 | /* Yes -- overlay event support is not active, | |
2560 | so we must try to set a breakpoint at the LMA. | |
2561 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2562 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2563 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2564 | bl->owner->number); |
879bfdc2 DJ |
2565 | else |
2566 | { | |
35df4500 TJB |
2567 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2568 | bl->section); | |
879bfdc2 | 2569 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2570 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2571 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2572 | |
2573 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2574 | try |
0000e5cc PA |
2575 | { |
2576 | int val; | |
2577 | ||
579c6ad9 | 2578 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2579 | = breakpoint_kind (bl, &addr); |
2580 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2581 | val = target_insert_breakpoint (bl->gdbarch, |
2582 | &bl->overlay_target_info); | |
2583 | if (val) | |
688fca4f PA |
2584 | bp_excpt |
2585 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2586 | } |
94aeb44b | 2587 | catch (gdb_exception &e) |
0000e5cc | 2588 | { |
94aeb44b | 2589 | bp_excpt = std::move (e); |
0000e5cc PA |
2590 | } |
2591 | ||
688fca4f | 2592 | if (bp_excpt.reason != 0) |
99361f52 | 2593 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2594 | "Overlay breakpoint %d " |
2595 | "failed: in ROM?\n", | |
35df4500 | 2596 | bl->owner->number); |
879bfdc2 DJ |
2597 | } |
2598 | } | |
2599 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2600 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2601 | { |
2602 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2603 | try |
dd61ec5c | 2604 | { |
0000e5cc PA |
2605 | int val; |
2606 | ||
dd61ec5c | 2607 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2608 | if (val) |
688fca4f | 2609 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2610 | } |
94aeb44b | 2611 | catch (gdb_exception &e) |
dd61ec5c | 2612 | { |
94aeb44b | 2613 | bp_excpt = std::move (e); |
dd61ec5c | 2614 | } |
879bfdc2 DJ |
2615 | } |
2616 | else | |
2617 | { | |
2618 | /* No. This breakpoint will not be inserted. | |
2619 | No error, but do not mark the bp as 'inserted'. */ | |
2620 | return 0; | |
2621 | } | |
2622 | } | |
2623 | ||
688fca4f | 2624 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2625 | { |
2626 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2627 | |
2628 | /* In some cases, we might not be able to insert a | |
2629 | breakpoint in a shared library that has already been | |
2630 | removed, but we have not yet processed the shlib unload | |
2631 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2632 | breakpoint insertion themselves can't tell why the |
2633 | breakpoint insertion failed (e.g., the remote target | |
2634 | doesn't define error codes), so we must treat generic | |
2635 | errors as memory errors. */ | |
688fca4f PA |
2636 | if (bp_excpt.reason == RETURN_ERROR |
2637 | && (bp_excpt.error == GENERIC_ERROR | |
2638 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2639 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2640 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2641 | || shared_objfile_contains_address_p (bl->pspace, |
2642 | bl->address))) | |
879bfdc2 | 2643 | { |
4a64f543 | 2644 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2645 | bl->shlib_disabled = 1; |
76727919 | 2646 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2647 | if (!*disabled_breaks) |
2648 | { | |
2649 | fprintf_unfiltered (tmp_error_stream, | |
2650 | "Cannot insert breakpoint %d.\n", | |
2651 | bl->owner->number); | |
2652 | fprintf_unfiltered (tmp_error_stream, | |
2653 | "Temporarily disabling shared " | |
2654 | "library breakpoints:\n"); | |
2655 | } | |
2656 | *disabled_breaks = 1; | |
879bfdc2 | 2657 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2658 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2659 | return 0; |
879bfdc2 DJ |
2660 | } |
2661 | else | |
879bfdc2 | 2662 | { |
35df4500 | 2663 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2664 | { |
0000e5cc | 2665 | *hw_breakpoint_error = 1; |
688fca4f | 2666 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2667 | fprintf_unfiltered (tmp_error_stream, |
2668 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2669 | bl->owner->number, |
2670 | bp_excpt.message ? ":" : ".\n"); | |
2671 | if (bp_excpt.message != NULL) | |
2672 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2673 | bp_excpt.what ()); |
879bfdc2 DJ |
2674 | } |
2675 | else | |
2676 | { | |
688fca4f | 2677 | if (bp_excpt.message == NULL) |
0000e5cc | 2678 | { |
1ccbe998 | 2679 | std::string message |
0000e5cc PA |
2680 | = memory_error_message (TARGET_XFER_E_IO, |
2681 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2682 | |
2683 | fprintf_unfiltered (tmp_error_stream, | |
2684 | "Cannot insert breakpoint %d.\n" | |
2685 | "%s\n", | |
1ccbe998 | 2686 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2687 | } |
2688 | else | |
2689 | { | |
2690 | fprintf_unfiltered (tmp_error_stream, | |
2691 | "Cannot insert breakpoint %d: %s\n", | |
2692 | bl->owner->number, | |
3d6e9d23 | 2693 | bp_excpt.what ()); |
0000e5cc | 2694 | } |
879bfdc2 | 2695 | } |
0000e5cc | 2696 | return 1; |
879bfdc2 DJ |
2697 | |
2698 | } | |
2699 | } | |
2700 | else | |
35df4500 | 2701 | bl->inserted = 1; |
879bfdc2 | 2702 | |
0000e5cc | 2703 | return 0; |
879bfdc2 DJ |
2704 | } |
2705 | ||
35df4500 | 2706 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2707 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2708 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2709 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2710 | { |
0000e5cc PA |
2711 | int val; |
2712 | ||
77b06cd7 TJB |
2713 | gdb_assert (bl->owner->ops != NULL |
2714 | && bl->owner->ops->insert_location != NULL); | |
2715 | ||
2716 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2717 | |
2718 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2719 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2720 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2721 | { |
2722 | struct bp_location *loc, **loc_temp; | |
2723 | ||
2724 | /* But don't try to insert it, if there's already another | |
2725 | hw_access location that would be considered a duplicate | |
2726 | of this one. */ | |
2727 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2728 | if (loc != bl |
85d721b8 | 2729 | && loc->watchpoint_type == hw_access |
35df4500 | 2730 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2731 | { |
35df4500 TJB |
2732 | bl->duplicate = 1; |
2733 | bl->inserted = 1; | |
2734 | bl->target_info = loc->target_info; | |
2735 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2736 | val = 0; |
2737 | break; | |
2738 | } | |
2739 | ||
2740 | if (val == 1) | |
2741 | { | |
77b06cd7 TJB |
2742 | bl->watchpoint_type = hw_access; |
2743 | val = bl->owner->ops->insert_location (bl); | |
2744 | ||
2745 | if (val) | |
2746 | /* Back to the original value. */ | |
2747 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2748 | } |
2749 | } | |
2750 | ||
35df4500 | 2751 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2752 | } |
2753 | ||
35df4500 | 2754 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2755 | { |
0000e5cc PA |
2756 | int val; |
2757 | ||
77b06cd7 TJB |
2758 | gdb_assert (bl->owner->ops != NULL |
2759 | && bl->owner->ops->insert_location != NULL); | |
2760 | ||
2761 | val = bl->owner->ops->insert_location (bl); | |
2762 | if (val) | |
2763 | { | |
2764 | bl->owner->enable_state = bp_disabled; | |
2765 | ||
2766 | if (val == 1) | |
2767 | warning (_("\ | |
2768 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2769 | of catchpoint."), bl->owner->number); | |
2770 | else | |
2771 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2772 | } | |
2773 | ||
2774 | bl->inserted = (val == 0); | |
1640b821 DJ |
2775 | |
2776 | /* We've already printed an error message if there was a problem | |
2777 | inserting this catchpoint, and we've disabled the catchpoint, | |
2778 | so just return success. */ | |
2779 | return 0; | |
879bfdc2 DJ |
2780 | } |
2781 | ||
2782 | return 0; | |
2783 | } | |
2784 | ||
6c95b8df PA |
2785 | /* This function is called when program space PSPACE is about to be |
2786 | deleted. It takes care of updating breakpoints to not reference | |
2787 | PSPACE anymore. */ | |
2788 | ||
2789 | void | |
2790 | breakpoint_program_space_exit (struct program_space *pspace) | |
2791 | { | |
2792 | struct breakpoint *b, *b_temp; | |
876fa593 | 2793 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2794 | |
2795 | /* Remove any breakpoint that was set through this program space. */ | |
2796 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2797 | { | |
2798 | if (b->pspace == pspace) | |
2799 | delete_breakpoint (b); | |
2800 | } | |
2801 | ||
2802 | /* Breakpoints set through other program spaces could have locations | |
2803 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2804 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2805 | { |
2806 | struct bp_location *tmp; | |
2807 | ||
2808 | if (loc->pspace == pspace) | |
2809 | { | |
2bdf28a0 | 2810 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2811 | if (loc->owner->loc == loc) |
2812 | loc->owner->loc = loc->next; | |
2813 | else | |
2814 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2815 | if (tmp->next == loc) | |
2816 | { | |
2817 | tmp->next = loc->next; | |
2818 | break; | |
2819 | } | |
2820 | } | |
2821 | } | |
2822 | ||
2823 | /* Now update the global location list to permanently delete the | |
2824 | removed locations above. */ | |
44702360 | 2825 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2826 | } |
2827 | ||
74960c60 VP |
2828 | /* Make sure all breakpoints are inserted in inferior. |
2829 | Throws exception on any error. | |
2830 | A breakpoint that is already inserted won't be inserted | |
2831 | again, so calling this function twice is safe. */ | |
2832 | void | |
2833 | insert_breakpoints (void) | |
2834 | { | |
2835 | struct breakpoint *bpt; | |
2836 | ||
2837 | ALL_BREAKPOINTS (bpt) | |
2838 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2839 | { |
2840 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2841 | ||
2842 | update_watchpoint (w, 0 /* don't reparse. */); | |
2843 | } | |
74960c60 | 2844 | |
04086b45 PA |
2845 | /* Updating watchpoints creates new locations, so update the global |
2846 | location list. Explicitly tell ugll to insert locations and | |
2847 | ignore breakpoints_always_inserted_mode. */ | |
2848 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2849 | } |
2850 | ||
20388dd6 YQ |
2851 | /* Invoke CALLBACK for each of bp_location. */ |
2852 | ||
2853 | void | |
2854 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2855 | { | |
2856 | struct bp_location *loc, **loc_tmp; | |
2857 | ||
2858 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2859 | { | |
2860 | callback (loc, NULL); | |
2861 | } | |
2862 | } | |
2863 | ||
b775012e LM |
2864 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2865 | target. It is the case with deleting and disabling of breakpoints when using | |
2866 | always-inserted mode. */ | |
2867 | ||
2868 | static void | |
2869 | update_inserted_breakpoint_locations (void) | |
2870 | { | |
2871 | struct bp_location *bl, **blp_tmp; | |
2872 | int error_flag = 0; | |
2873 | int val = 0; | |
2874 | int disabled_breaks = 0; | |
2875 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2876 | int hw_bp_details_reported = 0; |
b775012e | 2877 | |
d7e74731 | 2878 | string_file tmp_error_stream; |
b775012e LM |
2879 | |
2880 | /* Explicitly mark the warning -- this will only be printed if | |
2881 | there was an error. */ | |
d7e74731 | 2882 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2883 | |
5ed8105e | 2884 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2885 | |
2886 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2887 | { | |
2888 | /* We only want to update software breakpoints and hardware | |
2889 | breakpoints. */ | |
2890 | if (!is_breakpoint (bl->owner)) | |
2891 | continue; | |
2892 | ||
2893 | /* We only want to update locations that are already inserted | |
2894 | and need updating. This is to avoid unwanted insertion during | |
2895 | deletion of breakpoints. */ | |
4daf1902 | 2896 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2897 | continue; |
2898 | ||
2899 | switch_to_program_space_and_thread (bl->pspace); | |
2900 | ||
2901 | /* For targets that support global breakpoints, there's no need | |
2902 | to select an inferior to insert breakpoint to. In fact, even | |
2903 | if we aren't attached to any process yet, we should still | |
2904 | insert breakpoints. */ | |
f5656ead | 2905 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2906 | && inferior_ptid == null_ptid) |
b775012e LM |
2907 | continue; |
2908 | ||
d7e74731 | 2909 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2910 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2911 | if (val) |
2912 | error_flag = val; | |
2913 | } | |
2914 | ||
2915 | if (error_flag) | |
2916 | { | |
223ffa71 | 2917 | target_terminal::ours_for_output (); |
b775012e LM |
2918 | error_stream (tmp_error_stream); |
2919 | } | |
b775012e LM |
2920 | } |
2921 | ||
c30eee59 | 2922 | /* Used when starting or continuing the program. */ |
c906108c | 2923 | |
74960c60 VP |
2924 | static void |
2925 | insert_breakpoint_locations (void) | |
c906108c | 2926 | { |
a5606eee | 2927 | struct breakpoint *bpt; |
35df4500 | 2928 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2929 | int error_flag = 0; |
c906108c | 2930 | int val = 0; |
3fbb6ffa | 2931 | int disabled_breaks = 0; |
81d0cc19 | 2932 | int hw_breakpoint_error = 0; |
dd61ec5c | 2933 | int hw_bp_error_explained_already = 0; |
c906108c | 2934 | |
d7e74731 PA |
2935 | string_file tmp_error_stream; |
2936 | ||
81d0cc19 GS |
2937 | /* Explicitly mark the warning -- this will only be printed if |
2938 | there was an error. */ | |
d7e74731 | 2939 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2940 | |
5ed8105e | 2941 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2942 | |
35df4500 | 2943 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2944 | { |
b775012e | 2945 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2946 | continue; |
2947 | ||
4a64f543 MS |
2948 | /* There is no point inserting thread-specific breakpoints if |
2949 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2950 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2951 | if (bl->owner->thread != -1 |
5d5658a1 | 2952 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2953 | continue; |
2954 | ||
35df4500 | 2955 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2956 | |
2957 | /* For targets that support global breakpoints, there's no need | |
2958 | to select an inferior to insert breakpoint to. In fact, even | |
2959 | if we aren't attached to any process yet, we should still | |
2960 | insert breakpoints. */ | |
f5656ead | 2961 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2962 | && inferior_ptid == null_ptid) |
6c95b8df PA |
2963 | continue; |
2964 | ||
d7e74731 | 2965 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2966 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2967 | if (val) |
eacd795a | 2968 | error_flag = val; |
879bfdc2 | 2969 | } |
c906108c | 2970 | |
4a64f543 MS |
2971 | /* If we failed to insert all locations of a watchpoint, remove |
2972 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2973 | ALL_BREAKPOINTS (bpt) |
2974 | { | |
2975 | int some_failed = 0; | |
2976 | struct bp_location *loc; | |
2977 | ||
2978 | if (!is_hardware_watchpoint (bpt)) | |
2979 | continue; | |
2980 | ||
d6b74ac4 | 2981 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2982 | continue; |
74960c60 VP |
2983 | |
2984 | if (bpt->disposition == disp_del_at_next_stop) | |
2985 | continue; | |
a5606eee VP |
2986 | |
2987 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2988 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2989 | { |
2990 | some_failed = 1; | |
2991 | break; | |
2992 | } | |
2993 | if (some_failed) | |
2994 | { | |
2995 | for (loc = bpt->loc; loc; loc = loc->next) | |
2996 | if (loc->inserted) | |
834c0d03 | 2997 | remove_breakpoint (loc); |
a5606eee VP |
2998 | |
2999 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3000 | tmp_error_stream.printf ("Could not insert " |
3001 | "hardware watchpoint %d.\n", | |
3002 | bpt->number); | |
eacd795a | 3003 | error_flag = -1; |
a5606eee VP |
3004 | } |
3005 | } | |
3006 | ||
eacd795a | 3007 | if (error_flag) |
81d0cc19 GS |
3008 | { |
3009 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3010 | message about possibly exhausted resources. */ | |
dd61ec5c | 3011 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3012 | { |
d7e74731 | 3013 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3014 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3015 | } |
223ffa71 | 3016 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3017 | error_stream (tmp_error_stream); |
3018 | } | |
c906108c SS |
3019 | } |
3020 | ||
c30eee59 TJB |
3021 | /* Used when the program stops. |
3022 | Returns zero if successful, or non-zero if there was a problem | |
3023 | removing a breakpoint location. */ | |
3024 | ||
c906108c | 3025 | int |
fba45db2 | 3026 | remove_breakpoints (void) |
c906108c | 3027 | { |
35df4500 | 3028 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3029 | int val = 0; |
c906108c | 3030 | |
35df4500 | 3031 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3032 | { |
1e4d1764 | 3033 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3034 | val |= remove_breakpoint (bl); |
c5aa993b | 3035 | } |
3a1bae8e | 3036 | return val; |
c906108c SS |
3037 | } |
3038 | ||
49fa26b0 PA |
3039 | /* When a thread exits, remove breakpoints that are related to |
3040 | that thread. */ | |
3041 | ||
3042 | static void | |
3043 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3044 | { | |
3045 | struct breakpoint *b, *b_tmp; | |
3046 | ||
3047 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3048 | { | |
5d5658a1 | 3049 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3050 | { |
3051 | b->disposition = disp_del_at_next_stop; | |
3052 | ||
3053 | printf_filtered (_("\ | |
43792cf0 PA |
3054 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3055 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3056 | |
3057 | /* Hide it from the user. */ | |
3058 | b->number = 0; | |
3059 | } | |
3060 | } | |
3061 | } | |
3062 | ||
00431a78 | 3063 | /* Remove breakpoints of inferior INF. */ |
6c95b8df PA |
3064 | |
3065 | int | |
00431a78 | 3066 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3067 | { |
35df4500 | 3068 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3069 | int val; |
6c95b8df | 3070 | |
35df4500 | 3071 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3072 | { |
35df4500 | 3073 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3074 | continue; |
3075 | ||
fc126975 | 3076 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3077 | { |
834c0d03 | 3078 | val = remove_breakpoint (bl); |
6c95b8df PA |
3079 | if (val != 0) |
3080 | return val; | |
3081 | } | |
3082 | } | |
3083 | return 0; | |
3084 | } | |
3085 | ||
e58b0e63 PA |
3086 | static int internal_breakpoint_number = -1; |
3087 | ||
84f4c1fe PM |
3088 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3089 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3090 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3091 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3092 | breakpoint_count and that value incremented. Internal breakpoints |
3093 | do not set the internal var bpnum. */ | |
3094 | static void | |
3095 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3096 | { | |
3097 | if (internal) | |
3098 | b->number = internal_breakpoint_number--; | |
3099 | else | |
3100 | { | |
3101 | set_breakpoint_count (breakpoint_count + 1); | |
3102 | b->number = breakpoint_count; | |
3103 | } | |
3104 | } | |
3105 | ||
e62c965a | 3106 | static struct breakpoint * |
a6d9a66e | 3107 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3108 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3109 | const struct breakpoint_ops *ops) |
e62c965a | 3110 | { |
51abb421 | 3111 | symtab_and_line sal; |
e62c965a PP |
3112 | sal.pc = address; |
3113 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3114 | sal.pspace = current_program_space; |
e62c965a | 3115 | |
51abb421 | 3116 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3117 | b->number = internal_breakpoint_number--; |
3118 | b->disposition = disp_donttouch; | |
3119 | ||
3120 | return b; | |
3121 | } | |
3122 | ||
17450429 PP |
3123 | static const char *const longjmp_names[] = |
3124 | { | |
3125 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3126 | }; | |
3127 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3128 | ||
3129 | /* Per-objfile data private to breakpoint.c. */ | |
3130 | struct breakpoint_objfile_data | |
3131 | { | |
3132 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3133 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3134 | |
3135 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3136 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3137 | |
28106bc2 | 3138 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3139 | int longjmp_searched = 0; |
28106bc2 | 3140 | |
45461e0d SM |
3141 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3142 | references. */ | |
3143 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3144 | |
17450429 | 3145 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3146 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3147 | |
3148 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3149 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3150 | |
3151 | /* True if we have looked for exception probes. */ | |
43dce439 | 3152 | int exception_searched = 0; |
28106bc2 | 3153 | |
45461e0d SM |
3154 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3155 | references. */ | |
3156 | std::vector<probe *> exception_probes; | |
17450429 PP |
3157 | }; |
3158 | ||
51d3063a TT |
3159 | static const struct objfile_key<breakpoint_objfile_data> |
3160 | breakpoint_objfile_key; | |
17450429 PP |
3161 | |
3162 | /* Minimal symbol not found sentinel. */ | |
3163 | static struct minimal_symbol msym_not_found; | |
3164 | ||
3165 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3166 | ||
3167 | static int | |
3168 | msym_not_found_p (const struct minimal_symbol *msym) | |
3169 | { | |
3170 | return msym == &msym_not_found; | |
3171 | } | |
3172 | ||
3173 | /* Return per-objfile data needed by breakpoint.c. | |
3174 | Allocate the data if necessary. */ | |
3175 | ||
3176 | static struct breakpoint_objfile_data * | |
3177 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3178 | { | |
3179 | struct breakpoint_objfile_data *bp_objfile_data; | |
3180 | ||
51d3063a | 3181 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3182 | if (bp_objfile_data == NULL) |
51d3063a | 3183 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3184 | return bp_objfile_data; |
3185 | } | |
3186 | ||
e62c965a | 3187 | static void |
af02033e | 3188 | create_overlay_event_breakpoint (void) |
e62c965a | 3189 | { |
af02033e | 3190 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3191 | |
2030c079 | 3192 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3193 | { |
3194 | struct breakpoint *b; | |
17450429 PP |
3195 | struct breakpoint_objfile_data *bp_objfile_data; |
3196 | CORE_ADDR addr; | |
67994074 | 3197 | struct explicit_location explicit_loc; |
69de3c6a | 3198 | |
17450429 PP |
3199 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3200 | ||
3b7344d5 | 3201 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3202 | continue; |
3203 | ||
3b7344d5 | 3204 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3205 | { |
3b7344d5 | 3206 | struct bound_minimal_symbol m; |
17450429 PP |
3207 | |
3208 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3209 | if (m.minsym == NULL) |
17450429 PP |
3210 | { |
3211 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3212 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3213 | continue; |
3214 | } | |
3215 | bp_objfile_data->overlay_msym = m; | |
3216 | } | |
e62c965a | 3217 | |
77e371c0 | 3218 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3219 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3220 | bp_overlay_event, |
3221 | &internal_breakpoint_ops); | |
67994074 KS |
3222 | initialize_explicit_location (&explicit_loc); |
3223 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3224 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3225 | |
69de3c6a PP |
3226 | if (overlay_debugging == ovly_auto) |
3227 | { | |
3228 | b->enable_state = bp_enabled; | |
3229 | overlay_events_enabled = 1; | |
3230 | } | |
3231 | else | |
3232 | { | |
3233 | b->enable_state = bp_disabled; | |
3234 | overlay_events_enabled = 0; | |
3235 | } | |
e62c965a | 3236 | } |
e62c965a PP |
3237 | } |
3238 | ||
0fd8e87f | 3239 | static void |
af02033e | 3240 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3241 | { |
6c95b8df | 3242 | struct program_space *pspace; |
6c95b8df | 3243 | |
5ed8105e | 3244 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3245 | |
6c95b8df | 3246 | ALL_PSPACES (pspace) |
af02033e | 3247 | { |
af02033e PP |
3248 | set_current_program_space (pspace); |
3249 | ||
2030c079 | 3250 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3251 | { |
3252 | int i; | |
3253 | struct gdbarch *gdbarch; | |
3254 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3255 | |
aed57c53 | 3256 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3257 | |
aed57c53 | 3258 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3259 | |
aed57c53 TT |
3260 | if (!bp_objfile_data->longjmp_searched) |
3261 | { | |
3262 | std::vector<probe *> ret | |
3263 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3264 | |
aed57c53 TT |
3265 | if (!ret.empty ()) |
3266 | { | |
3267 | /* We are only interested in checking one element. */ | |
3268 | probe *p = ret[0]; | |
3269 | ||
3270 | if (!p->can_evaluate_arguments ()) | |
3271 | { | |
3272 | /* We cannot use the probe interface here, because it does | |
3273 | not know how to evaluate arguments. */ | |
3274 | ret.clear (); | |
3275 | } | |
3276 | } | |
3277 | bp_objfile_data->longjmp_probes = ret; | |
3278 | bp_objfile_data->longjmp_searched = 1; | |
3279 | } | |
25f9533e | 3280 | |
aed57c53 TT |
3281 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3282 | { | |
3283 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3284 | { | |
3285 | struct breakpoint *b; | |
3286 | ||
3287 | b = create_internal_breakpoint (gdbarch, | |
3288 | p->get_relocated_address (objfile), | |
3289 | bp_longjmp_master, | |
3290 | &internal_breakpoint_ops); | |
3291 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3292 | b->enable_state = bp_disabled; | |
3293 | } | |
28106bc2 | 3294 | |
aed57c53 TT |
3295 | continue; |
3296 | } | |
28106bc2 | 3297 | |
aed57c53 | 3298 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
28106bc2 | 3299 | continue; |
28106bc2 | 3300 | |
aed57c53 TT |
3301 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3302 | { | |
3303 | struct breakpoint *b; | |
3304 | const char *func_name; | |
3305 | CORE_ADDR addr; | |
3306 | struct explicit_location explicit_loc; | |
0fd8e87f | 3307 | |
aed57c53 TT |
3308 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3309 | continue; | |
17450429 | 3310 | |
aed57c53 TT |
3311 | func_name = longjmp_names[i]; |
3312 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3313 | { | |
3314 | struct bound_minimal_symbol m; | |
3315 | ||
3316 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3317 | if (m.minsym == NULL) | |
3318 | { | |
3319 | /* Prevent future lookups in this objfile. */ | |
3320 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3321 | continue; | |
3322 | } | |
3323 | bp_objfile_data->longjmp_msym[i] = m; | |
3324 | } | |
17450429 | 3325 | |
aed57c53 TT |
3326 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3327 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3328 | &internal_breakpoint_ops); | |
3329 | initialize_explicit_location (&explicit_loc); | |
3330 | explicit_loc.function_name = ASTRDUP (func_name); | |
3331 | b->location = new_explicit_location (&explicit_loc); | |
3332 | b->enable_state = bp_disabled; | |
3333 | } | |
3334 | } | |
af02033e | 3335 | } |
0fd8e87f UW |
3336 | } |
3337 | ||
af02033e | 3338 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3339 | static void |
af02033e | 3340 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3341 | { |
3342 | struct program_space *pspace; | |
af02033e | 3343 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3344 | |
5ed8105e | 3345 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3346 | |
3347 | ALL_PSPACES (pspace) | |
17450429 | 3348 | { |
17450429 PP |
3349 | CORE_ADDR addr; |
3350 | ||
3351 | set_current_program_space (pspace); | |
3352 | ||
2030c079 | 3353 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3354 | { |
3355 | struct breakpoint *b; | |
3356 | struct breakpoint_objfile_data *bp_objfile_data; | |
3357 | struct explicit_location explicit_loc; | |
aa7d318d | 3358 | |
aed57c53 | 3359 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3360 | |
aed57c53 TT |
3361 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3362 | continue; | |
17450429 | 3363 | |
aed57c53 TT |
3364 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3365 | { | |
3366 | struct bound_minimal_symbol m; | |
17450429 | 3367 | |
aed57c53 TT |
3368 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3369 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3370 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3371 | { | |
3372 | /* Prevent future lookups in this objfile. */ | |
3373 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3374 | continue; | |
3375 | } | |
3376 | bp_objfile_data->terminate_msym = m; | |
3377 | } | |
aa7d318d | 3378 | |
aed57c53 TT |
3379 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3380 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
3381 | bp_std_terminate_master, | |
3382 | &internal_breakpoint_ops); | |
3383 | initialize_explicit_location (&explicit_loc); | |
3384 | explicit_loc.function_name = ASTRDUP (func_name); | |
3385 | b->location = new_explicit_location (&explicit_loc); | |
3386 | b->enable_state = bp_disabled; | |
3387 | } | |
17450429 | 3388 | } |
aa7d318d TT |
3389 | } |
3390 | ||
186c406b TT |
3391 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3392 | ||
70221824 | 3393 | static void |
186c406b TT |
3394 | create_exception_master_breakpoint (void) |
3395 | { | |
17450429 | 3396 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3397 | |
2030c079 | 3398 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3399 | { |
17450429 PP |
3400 | struct breakpoint *b; |
3401 | struct gdbarch *gdbarch; | |
3402 | struct breakpoint_objfile_data *bp_objfile_data; | |
3403 | CORE_ADDR addr; | |
67994074 | 3404 | struct explicit_location explicit_loc; |
17450429 PP |
3405 | |
3406 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3407 | ||
28106bc2 SDJ |
3408 | /* We prefer the SystemTap probe point if it exists. */ |
3409 | if (!bp_objfile_data->exception_searched) | |
3410 | { | |
45461e0d SM |
3411 | std::vector<probe *> ret |
3412 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3413 | |
45461e0d | 3414 | if (!ret.empty ()) |
25f9533e SDJ |
3415 | { |
3416 | /* We are only interested in checking one element. */ | |
45461e0d | 3417 | probe *p = ret[0]; |
25f9533e | 3418 | |
935676c9 | 3419 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3420 | { |
3421 | /* We cannot use the probe interface here, because it does | |
3422 | not know how to evaluate arguments. */ | |
45461e0d | 3423 | ret.clear (); |
25f9533e SDJ |
3424 | } |
3425 | } | |
3426 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3427 | bp_objfile_data->exception_searched = 1; |
3428 | } | |
3429 | ||
45461e0d | 3430 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3431 | { |
b926417a | 3432 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3433 | |
3434 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3435 | { |
729662a5 | 3436 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3437 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3438 | bp_exception_master, |
3439 | &internal_breakpoint_ops); | |
d28cd78a | 3440 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3441 | b->enable_state = bp_disabled; |
3442 | } | |
3443 | ||
3444 | continue; | |
3445 | } | |
3446 | ||
3447 | /* Otherwise, try the hook function. */ | |
3448 | ||
3b7344d5 | 3449 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3450 | continue; |
3451 | ||
3452 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3453 | |
3b7344d5 | 3454 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3455 | { |
3b7344d5 | 3456 | struct bound_minimal_symbol debug_hook; |
186c406b | 3457 | |
17450429 | 3458 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3459 | if (debug_hook.minsym == NULL) |
17450429 | 3460 | { |
3b7344d5 | 3461 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3462 | continue; |
3463 | } | |
3464 | ||
3465 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3466 | } |
17450429 | 3467 | |
77e371c0 | 3468 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3469 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3470 | current_top_target ()); | |
06edf0c0 PA |
3471 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3472 | &internal_breakpoint_ops); | |
67994074 KS |
3473 | initialize_explicit_location (&explicit_loc); |
3474 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3475 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3476 | b->enable_state = bp_disabled; |
186c406b | 3477 | } |
186c406b TT |
3478 | } |
3479 | ||
9ef9e6a6 KS |
3480 | /* Does B have a location spec? */ |
3481 | ||
3482 | static int | |
3483 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3484 | { | |
d28cd78a | 3485 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3486 | } |
3487 | ||
c906108c | 3488 | void |
fba45db2 | 3489 | update_breakpoints_after_exec (void) |
c906108c | 3490 | { |
35df4500 | 3491 | struct breakpoint *b, *b_tmp; |
876fa593 | 3492 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3493 | |
25b22b0a PA |
3494 | /* We're about to delete breakpoints from GDB's lists. If the |
3495 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3496 | writing the breakpoints' "shadow contents" back into memory. The | |
3497 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3498 | do that. Instead, the target is responsible from marking | |
3499 | breakpoints out as soon as it detects an exec. We don't do that | |
3500 | here instead, because there may be other attempts to delete | |
3501 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3502 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3503 | if (bploc->pspace == current_program_space) |
3504 | gdb_assert (!bploc->inserted); | |
c906108c | 3505 | |
35df4500 | 3506 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3507 | { |
6c95b8df PA |
3508 | if (b->pspace != current_program_space) |
3509 | continue; | |
3510 | ||
4a64f543 | 3511 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3512 | if (b->type == bp_shlib_event) |
3513 | { | |
3514 | delete_breakpoint (b); | |
3515 | continue; | |
3516 | } | |
c906108c | 3517 | |
4a64f543 | 3518 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3519 | if (b->type == bp_jit_event) |
3520 | { | |
3521 | delete_breakpoint (b); | |
3522 | continue; | |
3523 | } | |
3524 | ||
1900040c | 3525 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3526 | as must overlay event and longjmp master breakpoints. */ |
3527 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3528 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3529 | || b->type == bp_exception_master) | |
c4093a6a JM |
3530 | { |
3531 | delete_breakpoint (b); | |
3532 | continue; | |
3533 | } | |
3534 | ||
4a64f543 | 3535 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3536 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3537 | { |
3538 | delete_breakpoint (b); | |
3539 | continue; | |
3540 | } | |
3541 | ||
7c16b83e PA |
3542 | /* Just like single-step breakpoints. */ |
3543 | if (b->type == bp_single_step) | |
3544 | { | |
3545 | delete_breakpoint (b); | |
3546 | continue; | |
3547 | } | |
3548 | ||
611c83ae PA |
3549 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3550 | after an exec. */ | |
186c406b | 3551 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3552 | || b->type == bp_longjmp_call_dummy |
186c406b | 3553 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3554 | { |
3555 | delete_breakpoint (b); | |
3556 | continue; | |
3557 | } | |
3558 | ||
ce78b96d JB |
3559 | if (b->type == bp_catchpoint) |
3560 | { | |
3561 | /* For now, none of the bp_catchpoint breakpoints need to | |
3562 | do anything at this point. In the future, if some of | |
3563 | the catchpoints need to something, we will need to add | |
3564 | a new method, and call this method from here. */ | |
3565 | continue; | |
3566 | } | |
3567 | ||
c5aa993b JM |
3568 | /* bp_finish is a special case. The only way we ought to be able |
3569 | to see one of these when an exec() has happened, is if the user | |
3570 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3571 | carries them to the call-site of the current callee, by setting | |
3572 | a temporary bp there and resuming. But in this case, the finish | |
3573 | will carry them entirely through the vfork & exec. | |
3574 | ||
3575 | We don't want to allow a bp_finish to remain inserted now. But | |
3576 | we can't safely delete it, 'cause finish_command has a handle to | |
3577 | the bp on a bpstat, and will later want to delete it. There's a | |
3578 | chance (and I've seen it happen) that if we delete the bp_finish | |
3579 | here, that its storage will get reused by the time finish_command | |
3580 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3581 | We really must allow finish_command to delete a bp_finish. | |
3582 | ||
e5dd4106 | 3583 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3584 | it's safe to delete something others may have handles to?" |
3585 | problem, what we'll do here is just uninsert the bp_finish, and | |
3586 | let finish_command delete it. | |
3587 | ||
3588 | (We know the bp_finish is "doomed" in the sense that it's | |
3589 | momentary, and will be deleted as soon as finish_command sees | |
3590 | the inferior stopped. So it doesn't matter that the bp's | |
3591 | address is probably bogus in the new a.out, unlike e.g., the | |
3592 | solib breakpoints.) */ | |
c5aa993b | 3593 | |
c5aa993b JM |
3594 | if (b->type == bp_finish) |
3595 | { | |
3596 | continue; | |
3597 | } | |
3598 | ||
3599 | /* Without a symbolic address, we have little hope of the | |
3600 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3601 | a.out. */ |
9ef9e6a6 | 3602 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3603 | { |
3604 | delete_breakpoint (b); | |
3605 | continue; | |
3606 | } | |
c5aa993b | 3607 | } |
c906108c SS |
3608 | } |
3609 | ||
3610 | int | |
d80ee84f | 3611 | detach_breakpoints (ptid_t ptid) |
c906108c | 3612 | { |
35df4500 | 3613 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3614 | int val = 0; |
2989a365 | 3615 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3616 | struct inferior *inf = current_inferior (); |
c5aa993b | 3617 | |
e99b03dc | 3618 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3619 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3620 | |
6c95b8df | 3621 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3622 | inferior_ptid = ptid; |
35df4500 | 3623 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3624 | { |
35df4500 | 3625 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3626 | continue; |
3627 | ||
bd9673a4 PW |
3628 | /* This function must physically remove breakpoints locations |
3629 | from the specified ptid, without modifying the breakpoint | |
3630 | package's state. Locations of type bp_loc_other are only | |
3631 | maintained at GDB side. So, there is no need to remove | |
3632 | these bp_loc_other locations. Moreover, removing these | |
3633 | would modify the breakpoint package's state. */ | |
3634 | if (bl->loc_type == bp_loc_other) | |
3635 | continue; | |
3636 | ||
35df4500 | 3637 | if (bl->inserted) |
b2b6a7da | 3638 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3639 | } |
d03285ec | 3640 | |
3a1bae8e | 3641 | return val; |
c906108c SS |
3642 | } |
3643 | ||
35df4500 | 3644 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3645 | Note that this is used to detach breakpoints from a child fork. |
3646 | When we get here, the child isn't in the inferior list, and neither | |
3647 | do we have objects to represent its address space --- we should | |
35df4500 | 3648 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3649 | |
c906108c | 3650 | static int |
b2b6a7da | 3651 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3652 | { |
3653 | int val; | |
c5aa993b | 3654 | |
35df4500 TJB |
3655 | /* BL is never in moribund_locations by our callers. */ |
3656 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3657 | |
74960c60 VP |
3658 | /* The type of none suggests that owner is actually deleted. |
3659 | This should not ever happen. */ | |
35df4500 | 3660 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3661 | |
35df4500 TJB |
3662 | if (bl->loc_type == bp_loc_software_breakpoint |
3663 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3664 | { |
c02f5703 MS |
3665 | /* "Normal" instruction breakpoint: either the standard |
3666 | trap-instruction bp (bp_breakpoint), or a | |
3667 | bp_hardware_breakpoint. */ | |
3668 | ||
3669 | /* First check to see if we have to handle an overlay. */ | |
3670 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3671 | || bl->section == NULL |
3672 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3673 | { |
3674 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3675 | |
3676 | /* If we're trying to uninsert a memory breakpoint that we | |
3677 | know is set in a dynamic object that is marked | |
3678 | shlib_disabled, then either the dynamic object was | |
3679 | removed with "remove-symbol-file" or with | |
3680 | "nosharedlibrary". In the former case, we don't know | |
3681 | whether another dynamic object might have loaded over the | |
3682 | breakpoint's address -- the user might well let us know | |
3683 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3684 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3685 | list of dynamically loaded objects). If we have the |
3686 | breakpoint's shadow memory, that is, this is a software | |
3687 | breakpoint managed by GDB, check whether the breakpoint | |
3688 | is still inserted in memory, to avoid overwriting wrong | |
3689 | code with stale saved shadow contents. Note that HW | |
3690 | breakpoints don't have shadow memory, as they're | |
3691 | implemented using a mechanism that is not dependent on | |
3692 | being able to modify the target's memory, and as such | |
3693 | they should always be removed. */ | |
3694 | if (bl->shlib_disabled | |
3695 | && bl->target_info.shadow_len != 0 | |
3696 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3697 | val = 0; | |
3698 | else | |
73971819 | 3699 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3700 | } |
c906108c SS |
3701 | else |
3702 | { | |
4a64f543 | 3703 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3704 | Did we set a breakpoint at the LMA? */ |
3705 | if (!overlay_events_enabled) | |
3706 | { | |
3707 | /* Yes -- overlay event support is not active, so we | |
3708 | should have set a breakpoint at the LMA. Remove it. | |
3709 | */ | |
c02f5703 MS |
3710 | /* Ignore any failures: if the LMA is in ROM, we will |
3711 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3712 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3713 | target_remove_hw_breakpoint (bl->gdbarch, | |
3714 | &bl->overlay_target_info); | |
c02f5703 | 3715 | else |
35df4500 | 3716 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3717 | &bl->overlay_target_info, |
3718 | reason); | |
c02f5703 MS |
3719 | } |
3720 | /* Did we set a breakpoint at the VMA? | |
3721 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3722 | if (bl->inserted) |
c906108c | 3723 | { |
c02f5703 MS |
3724 | /* Yes -- remove it. Previously we did not bother to |
3725 | remove the breakpoint if the section had been | |
3726 | unmapped, but let's not rely on that being safe. We | |
3727 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3728 | |
3729 | /* However, we should remove *software* breakpoints only | |
3730 | if the section is still mapped, or else we overwrite | |
3731 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3732 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3733 | || section_is_mapped (bl->section)) | |
73971819 | 3734 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3735 | else |
3736 | val = 0; | |
c906108c | 3737 | } |
c02f5703 MS |
3738 | else |
3739 | { | |
3740 | /* No -- not inserted, so no need to remove. No error. */ | |
3741 | val = 0; | |
3742 | } | |
c906108c | 3743 | } |
879d1e6b | 3744 | |
08351840 PA |
3745 | /* In some cases, we might not be able to remove a breakpoint in |
3746 | a shared library that has already been removed, but we have | |
3747 | not yet processed the shlib unload event. Similarly for an | |
3748 | unloaded add-symbol-file object - the user might not yet have | |
3749 | had the chance to remove-symbol-file it. shlib_disabled will | |
3750 | be set if the library/object has already been removed, but | |
3751 | the breakpoint hasn't been uninserted yet, e.g., after | |
3752 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3753 | always-inserted mode. */ | |
076855f9 | 3754 | if (val |
08351840 PA |
3755 | && (bl->loc_type == bp_loc_software_breakpoint |
3756 | && (bl->shlib_disabled | |
3757 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3758 | || shared_objfile_contains_address_p (bl->pspace, |
3759 | bl->address)))) | |
879d1e6b UW |
3760 | val = 0; |
3761 | ||
c906108c SS |
3762 | if (val) |
3763 | return val; | |
b2b6a7da | 3764 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3765 | } |
35df4500 | 3766 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3767 | { |
77b06cd7 TJB |
3768 | gdb_assert (bl->owner->ops != NULL |
3769 | && bl->owner->ops->remove_location != NULL); | |
3770 | ||
b2b6a7da | 3771 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3772 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3773 | |
c906108c | 3774 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3775 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3776 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3777 | bl->owner->number); |
c906108c | 3778 | } |
35df4500 TJB |
3779 | else if (bl->owner->type == bp_catchpoint |
3780 | && breakpoint_enabled (bl->owner) | |
3781 | && !bl->duplicate) | |
ce78b96d | 3782 | { |
77b06cd7 TJB |
3783 | gdb_assert (bl->owner->ops != NULL |
3784 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3785 | |
73971819 | 3786 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3787 | if (val) |
3788 | return val; | |
77b06cd7 | 3789 | |
b2b6a7da | 3790 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3791 | } |
c906108c SS |
3792 | |
3793 | return 0; | |
3794 | } | |
3795 | ||
6c95b8df | 3796 | static int |
834c0d03 | 3797 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3798 | { |
35df4500 TJB |
3799 | /* BL is never in moribund_locations by our callers. */ |
3800 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3801 | |
6c95b8df PA |
3802 | /* The type of none suggests that owner is actually deleted. |
3803 | This should not ever happen. */ | |
35df4500 | 3804 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3805 | |
5ed8105e | 3806 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3807 | |
35df4500 | 3808 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3809 | |
5ed8105e | 3810 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3811 | } |
3812 | ||
c906108c SS |
3813 | /* Clear the "inserted" flag in all breakpoints. */ |
3814 | ||
25b22b0a | 3815 | void |
fba45db2 | 3816 | mark_breakpoints_out (void) |
c906108c | 3817 | { |
35df4500 | 3818 | struct bp_location *bl, **blp_tmp; |
c906108c | 3819 | |
35df4500 | 3820 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3821 | if (bl->pspace == current_program_space) |
35df4500 | 3822 | bl->inserted = 0; |
c906108c SS |
3823 | } |
3824 | ||
53a5351d JM |
3825 | /* Clear the "inserted" flag in all breakpoints and delete any |
3826 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3827 | |
3828 | Plus other such housekeeping that has to be done for breakpoints | |
3829 | between runs. | |
3830 | ||
53a5351d JM |
3831 | Note: this function gets called at the end of a run (by |
3832 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3833 | init_wait_for_inferior). */ |
c906108c SS |
3834 | |
3835 | ||
3836 | ||
3837 | void | |
fba45db2 | 3838 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3839 | { |
35df4500 | 3840 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3841 | struct program_space *pspace = current_program_space; |
c906108c | 3842 | |
50c71eaf PA |
3843 | /* If breakpoint locations are shared across processes, then there's |
3844 | nothing to do. */ | |
f5656ead | 3845 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3846 | return; |
3847 | ||
1a853c52 | 3848 | mark_breakpoints_out (); |
075f6582 | 3849 | |
35df4500 | 3850 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3851 | { |
6c95b8df PA |
3852 | if (b->loc && b->loc->pspace != pspace) |
3853 | continue; | |
3854 | ||
c5aa993b JM |
3855 | switch (b->type) |
3856 | { | |
3857 | case bp_call_dummy: | |
e2e4d78b | 3858 | case bp_longjmp_call_dummy: |
c906108c | 3859 | |
c5aa993b | 3860 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3861 | cause problems when the inferior is rerun, so we better get |
3862 | rid of it. */ | |
3863 | ||
3864 | case bp_watchpoint_scope: | |
3865 | ||
3866 | /* Also get rid of scope breakpoints. */ | |
3867 | ||
3868 | case bp_shlib_event: | |
3869 | ||
3870 | /* Also remove solib event breakpoints. Their addresses may | |
3871 | have changed since the last time we ran the program. | |
3872 | Actually we may now be debugging against different target; | |
3873 | and so the solib backend that installed this breakpoint may | |
3874 | not be used in by the target. E.g., | |
3875 | ||
3876 | (gdb) file prog-linux | |
3877 | (gdb) run # native linux target | |
3878 | ... | |
3879 | (gdb) kill | |
3880 | (gdb) file prog-win.exe | |
3881 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3882 | */ | |
c906108c | 3883 | |
f59f708a PA |
3884 | case bp_step_resume: |
3885 | ||
3886 | /* Also remove step-resume breakpoints. */ | |
3887 | ||
7c16b83e PA |
3888 | case bp_single_step: |
3889 | ||
3890 | /* Also remove single-step breakpoints. */ | |
3891 | ||
c5aa993b JM |
3892 | delete_breakpoint (b); |
3893 | break; | |
c906108c | 3894 | |
c5aa993b JM |
3895 | case bp_watchpoint: |
3896 | case bp_hardware_watchpoint: | |
3897 | case bp_read_watchpoint: | |
3898 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3899 | { |
3900 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3901 | |
3a5c3e22 PA |
3902 | /* Likewise for watchpoints on local expressions. */ |
3903 | if (w->exp_valid_block != NULL) | |
3904 | delete_breakpoint (b); | |
63000888 | 3905 | else |
3a5c3e22 | 3906 | { |
63000888 PA |
3907 | /* Get rid of existing locations, which are no longer |
3908 | valid. New ones will be created in | |
3909 | update_watchpoint, when the inferior is restarted. | |
3910 | The next update_global_location_list call will | |
3911 | garbage collect them. */ | |
3912 | b->loc = NULL; | |
3913 | ||
3914 | if (context == inf_starting) | |
3915 | { | |
3916 | /* Reset val field to force reread of starting value in | |
3917 | insert_breakpoints. */ | |
850645cf | 3918 | w->val.reset (nullptr); |
63000888 PA |
3919 | w->val_valid = 0; |
3920 | } | |
3921 | } | |
3a5c3e22 | 3922 | } |
c5aa993b JM |
3923 | break; |
3924 | default: | |
c5aa993b JM |
3925 | break; |
3926 | } | |
3927 | } | |
1c5cfe86 PA |
3928 | |
3929 | /* Get rid of the moribund locations. */ | |
1123588c | 3930 | for (bp_location *bl : moribund_locations) |
35df4500 | 3931 | decref_bp_location (&bl); |
1123588c | 3932 | moribund_locations.clear (); |
c906108c SS |
3933 | } |
3934 | ||
6c95b8df PA |
3935 | /* These functions concern about actual breakpoints inserted in the |
3936 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3937 | we need to hop over the bkpt --- so we check for address space | |
3938 | match, not program space. */ | |
3939 | ||
c2c6d25f JM |
3940 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3941 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3942 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3943 | permanent breakpoint. | |
3944 | - When continuing from a location with an ordinary breakpoint, we | |
3945 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3946 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3947 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3948 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3949 | |
c2c6d25f | 3950 | enum breakpoint_here |
accd0bcd | 3951 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3952 | { |
35df4500 | 3953 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3954 | int any_breakpoint_here = 0; |
c906108c | 3955 | |
35df4500 | 3956 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3957 | { |
35df4500 TJB |
3958 | if (bl->loc_type != bp_loc_software_breakpoint |
3959 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3960 | continue; |
3961 | ||
f1310107 | 3962 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3963 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3964 | || bl->permanent) |
f1310107 | 3965 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3966 | { |
3967 | if (overlay_debugging | |
35df4500 TJB |
3968 | && section_is_overlay (bl->section) |
3969 | && !section_is_mapped (bl->section)) | |
075f6582 | 3970 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3971 | else if (bl->permanent) |
075f6582 DJ |
3972 | return permanent_breakpoint_here; |
3973 | else | |
3974 | any_breakpoint_here = 1; | |
3975 | } | |
3976 | } | |
c906108c | 3977 | |
f486487f | 3978 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3979 | } |
3980 | ||
d35ae833 PA |
3981 | /* See breakpoint.h. */ |
3982 | ||
3983 | int | |
accd0bcd | 3984 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
3985 | CORE_ADDR addr, ULONGEST len) |
3986 | { | |
3987 | struct bp_location *bl, **blp_tmp; | |
3988 | ||
3989 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3990 | { | |
3991 | if (bl->loc_type != bp_loc_software_breakpoint | |
3992 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
3993 | continue; | |
3994 | ||
3995 | if ((breakpoint_enabled (bl->owner) | |
3996 | || bl->permanent) | |
3997 | && breakpoint_location_address_range_overlap (bl, aspace, | |
3998 | addr, len)) | |
3999 | { | |
4000 | if (overlay_debugging | |
4001 | && section_is_overlay (bl->section) | |
4002 | && !section_is_mapped (bl->section)) | |
4003 | { | |
4004 | /* Unmapped overlay -- can't be a match. */ | |
4005 | continue; | |
4006 | } | |
4007 | ||
4008 | return 1; | |
4009 | } | |
4010 | } | |
4011 | ||
4012 | return 0; | |
4013 | } | |
4014 | ||
1c5cfe86 PA |
4015 | /* Return true if there's a moribund breakpoint at PC. */ |
4016 | ||
4017 | int | |
accd0bcd | 4018 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4019 | { |
1123588c | 4020 | for (bp_location *loc : moribund_locations) |
f1310107 | 4021 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4022 | return 1; |
4023 | ||
4024 | return 0; | |
4025 | } | |
c2c6d25f | 4026 | |
f7ce857f PA |
4027 | /* Returns non-zero iff BL is inserted at PC, in address space |
4028 | ASPACE. */ | |
4029 | ||
4030 | static int | |
4031 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4032 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4033 | { |
4034 | if (bl->inserted | |
4035 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4036 | aspace, pc)) | |
4037 | { | |
4038 | if (overlay_debugging | |
4039 | && section_is_overlay (bl->section) | |
4040 | && !section_is_mapped (bl->section)) | |
4041 | return 0; /* unmapped overlay -- can't be a match */ | |
4042 | else | |
4043 | return 1; | |
4044 | } | |
4045 | return 0; | |
4046 | } | |
4047 | ||
a1fd2fa5 | 4048 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4049 | |
4050 | int | |
accd0bcd | 4051 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4052 | { |
f7ce857f | 4053 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4054 | |
f7ce857f | 4055 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4056 | { |
f7ce857f PA |
4057 | struct bp_location *bl = *blp; |
4058 | ||
35df4500 TJB |
4059 | if (bl->loc_type != bp_loc_software_breakpoint |
4060 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4061 | continue; |
4062 | ||
f7ce857f PA |
4063 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4064 | return 1; | |
c5aa993b | 4065 | } |
c36b740a VP |
4066 | return 0; |
4067 | } | |
4068 | ||
a1fd2fa5 PA |
4069 | /* This function returns non-zero iff there is a software breakpoint |
4070 | inserted at PC. */ | |
c36b740a VP |
4071 | |
4072 | int | |
accd0bcd | 4073 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4074 | CORE_ADDR pc) |
4fa8626c | 4075 | { |
f7ce857f | 4076 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4077 | |
f7ce857f | 4078 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4079 | { |
f7ce857f PA |
4080 | struct bp_location *bl = *blp; |
4081 | ||
35df4500 | 4082 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4083 | continue; |
4084 | ||
f7ce857f PA |
4085 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4086 | return 1; | |
4fa8626c DJ |
4087 | } |
4088 | ||
4089 | return 0; | |
9c02b525 PA |
4090 | } |
4091 | ||
4092 | /* See breakpoint.h. */ | |
4093 | ||
4094 | int | |
accd0bcd | 4095 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4096 | CORE_ADDR pc) |
4097 | { | |
4098 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4099 | |
4100 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4101 | { | |
4102 | struct bp_location *bl = *blp; | |
4103 | ||
4104 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4105 | continue; | |
4106 | ||
4107 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4108 | return 1; | |
4109 | } | |
4110 | ||
4111 | return 0; | |
4fa8626c DJ |
4112 | } |
4113 | ||
9093389c | 4114 | int |
accd0bcd | 4115 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4116 | CORE_ADDR addr, ULONGEST len) |
4117 | { | |
4118 | struct breakpoint *bpt; | |
4119 | ||
4120 | ALL_BREAKPOINTS (bpt) | |
4121 | { | |
4122 | struct bp_location *loc; | |
4123 | ||
4124 | if (bpt->type != bp_hardware_watchpoint | |
4125 | && bpt->type != bp_access_watchpoint) | |
4126 | continue; | |
4127 | ||
4128 | if (!breakpoint_enabled (bpt)) | |
4129 | continue; | |
4130 | ||
4131 | for (loc = bpt->loc; loc; loc = loc->next) | |
4132 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4133 | { | |
4134 | CORE_ADDR l, h; | |
4135 | ||
4136 | /* Check for intersection. */ | |
768adc05 PA |
4137 | l = std::max<CORE_ADDR> (loc->address, addr); |
4138 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4139 | if (l < h) |
4140 | return 1; | |
4141 | } | |
4142 | } | |
4143 | return 0; | |
4144 | } | |
c906108c | 4145 | \f |
c5aa993b | 4146 | |
c906108c SS |
4147 | /* bpstat stuff. External routines' interfaces are documented |
4148 | in breakpoint.h. */ | |
4149 | ||
4150 | int | |
c326b90e | 4151 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4152 | { |
533be4dd | 4153 | return (ep->type == bp_catchpoint); |
c906108c SS |
4154 | } |
4155 | ||
f431efe5 PA |
4156 | /* Frees any storage that is part of a bpstat. Does not walk the |
4157 | 'next' chain. */ | |
4158 | ||
04afa70c | 4159 | bpstats::~bpstats () |
198757a8 | 4160 | { |
04afa70c TT |
4161 | if (bp_location_at != NULL) |
4162 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4163 | } |
4164 | ||
c906108c SS |
4165 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4166 | Also free any storage that is part of a bpstat. */ | |
4167 | ||
4168 | void | |
fba45db2 | 4169 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4170 | { |
4171 | bpstat p; | |
4172 | bpstat q; | |
4173 | ||
4174 | if (bsp == 0) | |
4175 | return; | |
4176 | p = *bsp; | |
4177 | while (p != NULL) | |
4178 | { | |
4179 | q = p->next; | |
04afa70c | 4180 | delete p; |
c906108c SS |
4181 | p = q; |
4182 | } | |
4183 | *bsp = NULL; | |
4184 | } | |
4185 | ||
04afa70c TT |
4186 | bpstats::bpstats (const bpstats &other) |
4187 | : next (NULL), | |
4188 | bp_location_at (other.bp_location_at), | |
4189 | breakpoint_at (other.breakpoint_at), | |
4190 | commands (other.commands), | |
04afa70c TT |
4191 | print (other.print), |
4192 | stop (other.stop), | |
4193 | print_it (other.print_it) | |
4194 | { | |
850645cf TT |
4195 | if (other.old_val != NULL) |
4196 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4197 | incref_bp_location (bp_location_at); |
04afa70c TT |
4198 | } |
4199 | ||
c906108c SS |
4200 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4201 | is part of the bpstat is copied as well. */ | |
4202 | ||
4203 | bpstat | |
fba45db2 | 4204 | bpstat_copy (bpstat bs) |
c906108c SS |
4205 | { |
4206 | bpstat p = NULL; | |
4207 | bpstat tmp; | |
4208 | bpstat retval = NULL; | |
4209 | ||
4210 | if (bs == NULL) | |
4211 | return bs; | |
4212 | ||
4213 | for (; bs != NULL; bs = bs->next) | |
4214 | { | |
04afa70c | 4215 | tmp = new bpstats (*bs); |
31cc81e9 | 4216 | |
c906108c SS |
4217 | if (p == NULL) |
4218 | /* This is the first thing in the chain. */ | |
4219 | retval = tmp; | |
4220 | else | |
4221 | p->next = tmp; | |
4222 | p = tmp; | |
4223 | } | |
4224 | p->next = NULL; | |
4225 | return retval; | |
4226 | } | |
4227 | ||
4a64f543 | 4228 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4229 | |
4230 | bpstat | |
fba45db2 | 4231 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4232 | { |
c5aa993b JM |
4233 | if (bsp == NULL) |
4234 | return NULL; | |
c906108c | 4235 | |
c5aa993b JM |
4236 | for (; bsp != NULL; bsp = bsp->next) |
4237 | { | |
f431efe5 | 4238 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4239 | return bsp; |
4240 | } | |
c906108c SS |
4241 | return NULL; |
4242 | } | |
4243 | ||
ab04a2af TT |
4244 | /* See breakpoint.h. */ |
4245 | ||
47591c29 | 4246 | int |
427cd150 | 4247 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4248 | { |
ab04a2af TT |
4249 | for (; bsp != NULL; bsp = bsp->next) |
4250 | { | |
427cd150 TT |
4251 | if (bsp->breakpoint_at == NULL) |
4252 | { | |
4253 | /* A moribund location can never explain a signal other than | |
4254 | GDB_SIGNAL_TRAP. */ | |
4255 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4256 | return 1; |
427cd150 TT |
4257 | } |
4258 | else | |
47591c29 PA |
4259 | { |
4260 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4261 | sig)) | |
4262 | return 1; | |
4263 | } | |
ab04a2af TT |
4264 | } |
4265 | ||
47591c29 | 4266 | return 0; |
ab04a2af TT |
4267 | } |
4268 | ||
4a64f543 MS |
4269 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4270 | stopped at. *BSP upon return is a bpstat which points to the | |
4271 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4272 | good for anything but further calls to bpstat_num). | |
4273 | ||
8671a17b PA |
4274 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4275 | Return -1 if stopped at a breakpoint that has been deleted since | |
4276 | we set it. | |
4277 | Return 1 otherwise. */ | |
c906108c SS |
4278 | |
4279 | int | |
8671a17b | 4280 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4281 | { |
4282 | struct breakpoint *b; | |
4283 | ||
4284 | if ((*bsp) == NULL) | |
4285 | return 0; /* No more breakpoint values */ | |
8671a17b | 4286 | |
4a64f543 MS |
4287 | /* We assume we'll never have several bpstats that correspond to a |
4288 | single breakpoint -- otherwise, this function might return the | |
4289 | same number more than once and this will look ugly. */ | |
f431efe5 | 4290 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4291 | *bsp = (*bsp)->next; |
4292 | if (b == NULL) | |
4293 | return -1; /* breakpoint that's been deleted since */ | |
4294 | ||
4295 | *num = b->number; /* We have its number */ | |
4296 | return 1; | |
c906108c SS |
4297 | } |
4298 | ||
e93ca019 | 4299 | /* See breakpoint.h. */ |
c906108c SS |
4300 | |
4301 | void | |
e93ca019 | 4302 | bpstat_clear_actions (void) |
c906108c | 4303 | { |
e93ca019 JK |
4304 | bpstat bs; |
4305 | ||
00431a78 | 4306 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4307 | return; |
4308 | ||
00431a78 | 4309 | thread_info *tp = inferior_thread (); |
e93ca019 | 4310 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4311 | { |
d1b0a7bf | 4312 | bs->commands = NULL; |
850645cf | 4313 | bs->old_val.reset (nullptr); |
c906108c SS |
4314 | } |
4315 | } | |
4316 | ||
f3b1572e PA |
4317 | /* Called when a command is about to proceed the inferior. */ |
4318 | ||
4319 | static void | |
4320 | breakpoint_about_to_proceed (void) | |
4321 | { | |
d7e15655 | 4322 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4323 | { |
4324 | struct thread_info *tp = inferior_thread (); | |
4325 | ||
4326 | /* Allow inferior function calls in breakpoint commands to not | |
4327 | interrupt the command list. When the call finishes | |
4328 | successfully, the inferior will be standing at the same | |
4329 | breakpoint as if nothing happened. */ | |
16c381f0 | 4330 | if (tp->control.in_infcall) |
f3b1572e PA |
4331 | return; |
4332 | } | |
4333 | ||
4334 | breakpoint_proceeded = 1; | |
4335 | } | |
4336 | ||
abf85f46 JK |
4337 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4338 | or its equivalent. */ | |
4339 | ||
4340 | static int | |
4341 | command_line_is_silent (struct command_line *cmd) | |
4342 | { | |
4f45d445 | 4343 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4344 | } |
4345 | ||
4a64f543 MS |
4346 | /* Execute all the commands associated with all the breakpoints at |
4347 | this location. Any of these commands could cause the process to | |
4348 | proceed beyond this point, etc. We look out for such changes by | |
4349 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4350 | |
347bddb7 PA |
4351 | Returns true if a breakpoint command resumed the inferior. In that |
4352 | case, it is the caller's responsibility to recall it again with the | |
4353 | bpstat of the current thread. */ | |
4354 | ||
4355 | static int | |
4356 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4357 | { |
4358 | bpstat bs; | |
347bddb7 | 4359 | int again = 0; |
c906108c SS |
4360 | |
4361 | /* Avoid endless recursion if a `source' command is contained | |
4362 | in bs->commands. */ | |
4363 | if (executing_breakpoint_commands) | |
347bddb7 | 4364 | return 0; |
c906108c | 4365 | |
81b1e71c TT |
4366 | scoped_restore save_executing |
4367 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4368 | |
1ac32117 | 4369 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4370 | |
4a64f543 | 4371 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4372 | bs = *bsp; |
4373 | ||
4374 | breakpoint_proceeded = 0; | |
4375 | for (; bs != NULL; bs = bs->next) | |
4376 | { | |
d1b0a7bf | 4377 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4378 | |
4379 | /* Take ownership of the BSP's command tree, if it has one. | |
4380 | ||
4381 | The command tree could legitimately contain commands like | |
4382 | 'step' and 'next', which call clear_proceed_status, which | |
4383 | frees stop_bpstat's command tree. To make sure this doesn't | |
4384 | free the tree we're executing out from under us, we need to | |
4385 | take ownership of the tree ourselves. Since a given bpstat's | |
4386 | commands are only executed once, we don't need to copy it; we | |
4387 | can clear the pointer in the bpstat, and make sure we free | |
4388 | the tree when we're done. */ | |
d1b0a7bf | 4389 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4390 | bs->commands = NULL; |
d1b0a7bf TT |
4391 | if (ccmd != NULL) |
4392 | cmd = ccmd.get (); | |
abf85f46 JK |
4393 | if (command_line_is_silent (cmd)) |
4394 | { | |
4395 | /* The action has been already done by bpstat_stop_status. */ | |
4396 | cmd = cmd->next; | |
4397 | } | |
6c50ab1c | 4398 | |
c906108c SS |
4399 | while (cmd != NULL) |
4400 | { | |
4401 | execute_control_command (cmd); | |
4402 | ||
4403 | if (breakpoint_proceeded) | |
4404 | break; | |
4405 | else | |
4406 | cmd = cmd->next; | |
4407 | } | |
6c50ab1c | 4408 | |
c906108c | 4409 | if (breakpoint_proceeded) |
32c1e744 | 4410 | { |
cb814510 | 4411 | if (current_ui->async) |
347bddb7 PA |
4412 | /* If we are in async mode, then the target might be still |
4413 | running, not stopped at any breakpoint, so nothing for | |
4414 | us to do here -- just return to the event loop. */ | |
4415 | ; | |
32c1e744 VP |
4416 | else |
4417 | /* In sync mode, when execute_control_command returns | |
4418 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4419 | Breakpoint commands for that stop were not run, since |
4420 | execute_command does not run breakpoint commands -- | |
4421 | only command_line_handler does, but that one is not | |
4422 | involved in execution of breakpoint commands. So, we | |
4423 | can now execute breakpoint commands. It should be | |
4424 | noted that making execute_command do bpstat actions is | |
4425 | not an option -- in this case we'll have recursive | |
4426 | invocation of bpstat for each breakpoint with a | |
4427 | command, and can easily blow up GDB stack. Instead, we | |
4428 | return true, which will trigger the caller to recall us | |
4429 | with the new stop_bpstat. */ | |
4430 | again = 1; | |
4431 | break; | |
32c1e744 | 4432 | } |
c906108c | 4433 | } |
347bddb7 PA |
4434 | return again; |
4435 | } | |
4436 | ||
00431a78 PA |
4437 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4438 | one, is alive and has execution. Return NULL otherwise. */ | |
4439 | ||
4440 | static thread_info * | |
4441 | get_bpstat_thread () | |
4442 | { | |
4443 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4444 | return NULL; | |
4445 | ||
4446 | thread_info *tp = inferior_thread (); | |
4447 | if (tp->state == THREAD_EXITED || tp->executing) | |
4448 | return NULL; | |
4449 | return tp; | |
4450 | } | |
4451 | ||
347bddb7 PA |
4452 | void |
4453 | bpstat_do_actions (void) | |
4454 | { | |
694c6bf5 | 4455 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4456 | thread_info *tp; |
353d1d73 | 4457 | |
347bddb7 | 4458 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4459 | while ((tp = get_bpstat_thread ()) != NULL) |
4460 | { | |
4461 | /* Since in sync mode, bpstat_do_actions may resume the | |
4462 | inferior, and only return when it is stopped at the next | |
4463 | breakpoint, we keep doing breakpoint actions until it returns | |
4464 | false to indicate the inferior was not resumed. */ | |
4465 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4466 | break; | |
4467 | } | |
353d1d73 | 4468 | |
694c6bf5 | 4469 | cleanup_if_error.release (); |
c906108c SS |
4470 | } |
4471 | ||
fa4727a6 DJ |
4472 | /* Print out the (old or new) value associated with a watchpoint. */ |
4473 | ||
4474 | static void | |
4475 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4476 | { | |
4477 | if (val == NULL) | |
4478 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4479 | else | |
79a45b7d TT |
4480 | { |
4481 | struct value_print_options opts; | |
4482 | get_user_print_options (&opts); | |
4483 | value_print (val, stream, &opts); | |
4484 | } | |
fa4727a6 DJ |
4485 | } |
4486 | ||
f303dbd6 PA |
4487 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4488 | debugging multiple threads. */ | |
4489 | ||
4490 | void | |
4491 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4492 | { | |
112e8700 | 4493 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4494 | return; |
4495 | ||
112e8700 | 4496 | uiout->text ("\n"); |
f303dbd6 PA |
4497 | |
4498 | if (show_thread_that_caused_stop ()) | |
4499 | { | |
4500 | const char *name; | |
4501 | struct thread_info *thr = inferior_thread (); | |
4502 | ||
112e8700 SM |
4503 | uiout->text ("Thread "); |
4504 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4505 | |
4506 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4507 | if (name != NULL) | |
4508 | { | |
112e8700 SM |
4509 | uiout->text (" \""); |
4510 | uiout->field_fmt ("name", "%s", name); | |
4511 | uiout->text ("\""); | |
f303dbd6 PA |
4512 | } |
4513 | ||
112e8700 | 4514 | uiout->text (" hit "); |
f303dbd6 PA |
4515 | } |
4516 | } | |
4517 | ||
e514a9d6 | 4518 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4519 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4520 | 'print_it' in the bpstat structure. Under some circumstances we |
4521 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4522 | normal_stop(). */ |
e514a9d6 JM |
4523 | |
4524 | static enum print_stop_action | |
4525 | print_bp_stop_message (bpstat bs) | |
4526 | { | |
4527 | switch (bs->print_it) | |
4528 | { | |
4529 | case print_it_noop: | |
4a64f543 | 4530 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4531 | return PRINT_UNKNOWN; |
4532 | break; | |
4533 | ||
4534 | case print_it_done: | |
4535 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4536 | relevant messages. */ |
e514a9d6 JM |
4537 | return PRINT_SRC_AND_LOC; |
4538 | break; | |
4539 | ||
4540 | case print_it_normal: | |
4f8d1dc6 | 4541 | { |
f431efe5 PA |
4542 | struct breakpoint *b = bs->breakpoint_at; |
4543 | ||
1a6a67de TJB |
4544 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4545 | which has since been deleted. */ | |
4546 | if (b == NULL) | |
4547 | return PRINT_UNKNOWN; | |
4548 | ||
348d480f PA |
4549 | /* Normal case. Call the breakpoint's print_it method. */ |
4550 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4551 | } |
348d480f | 4552 | break; |
3086aeae | 4553 | |
e514a9d6 | 4554 | default: |
8e65ff28 | 4555 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4556 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4557 | break; |
c906108c | 4558 | } |
c906108c SS |
4559 | } |
4560 | ||
edcc5120 TT |
4561 | /* A helper function that prints a shared library stopped event. */ |
4562 | ||
4563 | static void | |
4564 | print_solib_event (int is_catchpoint) | |
4565 | { | |
6fb16ce6 | 4566 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4567 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4568 | |
4569 | if (!is_catchpoint) | |
4570 | { | |
4571 | if (any_added || any_deleted) | |
112e8700 | 4572 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4573 | else |
112e8700 SM |
4574 | current_uiout->text (_("Stopped due to shared library event (no " |
4575 | "libraries added or removed)\n")); | |
edcc5120 TT |
4576 | } |
4577 | ||
112e8700 SM |
4578 | if (current_uiout->is_mi_like_p ()) |
4579 | current_uiout->field_string ("reason", | |
4580 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4581 | |
4582 | if (any_deleted) | |
4583 | { | |
112e8700 | 4584 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4585 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4586 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4587 | { |
6fb16ce6 SM |
4588 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4589 | ||
edcc5120 | 4590 | if (ix > 0) |
112e8700 SM |
4591 | current_uiout->text (" "); |
4592 | current_uiout->field_string ("library", name); | |
4593 | current_uiout->text ("\n"); | |
edcc5120 | 4594 | } |
edcc5120 TT |
4595 | } |
4596 | ||
4597 | if (any_added) | |
4598 | { | |
112e8700 | 4599 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4600 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4601 | bool first = true; |
52941706 | 4602 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4603 | { |
bcb430e4 | 4604 | if (!first) |
112e8700 | 4605 | current_uiout->text (" "); |
bcb430e4 | 4606 | first = false; |
112e8700 SM |
4607 | current_uiout->field_string ("library", iter->so_name); |
4608 | current_uiout->text ("\n"); | |
edcc5120 | 4609 | } |
edcc5120 TT |
4610 | } |
4611 | } | |
4612 | ||
e514a9d6 JM |
4613 | /* Print a message indicating what happened. This is called from |
4614 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4615 | list - a list of the eventpoints that caused this stop. KIND is |
4616 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4617 | routine calls the generic print routine for printing a message |
4618 | about reasons for stopping. This will print (for example) the | |
4619 | "Breakpoint n," part of the output. The return value of this | |
4620 | routine is one of: | |
c906108c | 4621 | |
4a64f543 | 4622 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4623 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4624 | code to print the location. An example is |
c5aa993b JM |
4625 | "Breakpoint 1, " which should be followed by |
4626 | the location. | |
917317f4 | 4627 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4628 | to also print the location part of the message. |
4629 | An example is the catch/throw messages, which | |
4a64f543 | 4630 | don't require a location appended to the end. |
917317f4 | 4631 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4632 | further info to be printed. */ |
c906108c | 4633 | |
917317f4 | 4634 | enum print_stop_action |
36dfb11c | 4635 | bpstat_print (bpstat bs, int kind) |
c906108c | 4636 | { |
f486487f | 4637 | enum print_stop_action val; |
c5aa993b | 4638 | |
c906108c | 4639 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4640 | (Currently all watchpoints go on the bpstat whether hit or not. |
4641 | That probably could (should) be changed, provided care is taken | |
c906108c | 4642 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4643 | for (; bs; bs = bs->next) |
4644 | { | |
4645 | val = print_bp_stop_message (bs); | |
4646 | if (val == PRINT_SRC_ONLY | |
4647 | || val == PRINT_SRC_AND_LOC | |
4648 | || val == PRINT_NOTHING) | |
4649 | return val; | |
4650 | } | |
c906108c | 4651 | |
36dfb11c TT |
4652 | /* If we had hit a shared library event breakpoint, |
4653 | print_bp_stop_message would print out this message. If we hit an | |
4654 | OS-level shared library event, do the same thing. */ | |
4655 | if (kind == TARGET_WAITKIND_LOADED) | |
4656 | { | |
edcc5120 | 4657 | print_solib_event (0); |
36dfb11c TT |
4658 | return PRINT_NOTHING; |
4659 | } | |
4660 | ||
e514a9d6 | 4661 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4662 | with and nothing was printed. */ |
917317f4 | 4663 | return PRINT_UNKNOWN; |
c906108c SS |
4664 | } |
4665 | ||
bf469271 | 4666 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4667 | |
bf469271 PA |
4668 | static bool |
4669 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4670 | { |
278cd55f | 4671 | struct value *mark = value_mark (); |
bf469271 | 4672 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4673 | |
c906108c | 4674 | value_free_to_mark (mark); |
bf469271 | 4675 | return res; |
c906108c SS |
4676 | } |
4677 | ||
5760d0ab | 4678 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4679 | |
04afa70c TT |
4680 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4681 | : next (NULL), | |
4682 | bp_location_at (bl), | |
4683 | breakpoint_at (bl->owner), | |
4684 | commands (NULL), | |
04afa70c TT |
4685 | print (0), |
4686 | stop (0), | |
4687 | print_it (print_it_normal) | |
c906108c | 4688 | { |
f431efe5 | 4689 | incref_bp_location (bl); |
04afa70c TT |
4690 | **bs_link_pointer = this; |
4691 | *bs_link_pointer = &next; | |
4692 | } | |
4693 | ||
4694 | bpstats::bpstats () | |
4695 | : next (NULL), | |
4696 | bp_location_at (NULL), | |
4697 | breakpoint_at (NULL), | |
4698 | commands (NULL), | |
04afa70c TT |
4699 | print (0), |
4700 | stop (0), | |
4701 | print_it (print_it_normal) | |
4702 | { | |
c906108c SS |
4703 | } |
4704 | \f | |
d983da9c DJ |
4705 | /* The target has stopped with waitstatus WS. Check if any hardware |
4706 | watchpoints have triggered, according to the target. */ | |
4707 | ||
4708 | int | |
4709 | watchpoints_triggered (struct target_waitstatus *ws) | |
4710 | { | |
57810aa7 | 4711 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4712 | CORE_ADDR addr; |
4713 | struct breakpoint *b; | |
4714 | ||
4715 | if (!stopped_by_watchpoint) | |
4716 | { | |
4717 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4718 | as not triggered. */ | |
4719 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4720 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4721 | { |
4722 | struct watchpoint *w = (struct watchpoint *) b; | |
4723 | ||
4724 | w->watchpoint_triggered = watch_triggered_no; | |
4725 | } | |
d983da9c DJ |
4726 | |
4727 | return 0; | |
4728 | } | |
4729 | ||
8b88a78e | 4730 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4731 | { |
4732 | /* We were stopped by a watchpoint, but we don't know where. | |
4733 | Mark all watchpoints as unknown. */ | |
4734 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4735 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4736 | { |
4737 | struct watchpoint *w = (struct watchpoint *) b; | |
4738 | ||
4739 | w->watchpoint_triggered = watch_triggered_unknown; | |
4740 | } | |
d983da9c | 4741 | |
3c4797ba | 4742 | return 1; |
d983da9c DJ |
4743 | } |
4744 | ||
4745 | /* The target could report the data address. Mark watchpoints | |
4746 | affected by this data address as triggered, and all others as not | |
4747 | triggered. */ | |
4748 | ||
4749 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4750 | if (is_hardware_watchpoint (b)) |
d983da9c | 4751 | { |
3a5c3e22 | 4752 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4753 | struct bp_location *loc; |
d983da9c | 4754 | |
3a5c3e22 | 4755 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4756 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4757 | { |
3a5c3e22 | 4758 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4759 | { |
3a5c3e22 PA |
4760 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4761 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4762 | |
4763 | if (newaddr == start) | |
4764 | { | |
3a5c3e22 | 4765 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4766 | break; |
4767 | } | |
4768 | } | |
4769 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4770 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4771 | addr, loc->address, |
4772 | loc->length)) | |
4773 | { | |
3a5c3e22 | 4774 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4775 | break; |
4776 | } | |
4777 | } | |
d983da9c DJ |
4778 | } |
4779 | ||
4780 | return 1; | |
4781 | } | |
4782 | ||
bf469271 PA |
4783 | /* Possible return values for watchpoint_check. */ |
4784 | enum wp_check_result | |
4785 | { | |
4786 | /* The watchpoint has been deleted. */ | |
4787 | WP_DELETED = 1, | |
4788 | ||
4789 | /* The value has changed. */ | |
4790 | WP_VALUE_CHANGED = 2, | |
4791 | ||
4792 | /* The value has not changed. */ | |
4793 | WP_VALUE_NOT_CHANGED = 3, | |
4794 | ||
4795 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4796 | WP_IGNORE = 4, | |
4797 | }; | |
c906108c SS |
4798 | |
4799 | #define BP_TEMPFLAG 1 | |
4800 | #define BP_HARDWAREFLAG 2 | |
4801 | ||
4a64f543 | 4802 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4803 | changed. */ |
553e4c11 | 4804 | |
bf469271 PA |
4805 | static wp_check_result |
4806 | watchpoint_check (bpstat bs) | |
c906108c | 4807 | { |
3a5c3e22 | 4808 | struct watchpoint *b; |
c906108c SS |
4809 | struct frame_info *fr; |
4810 | int within_current_scope; | |
4811 | ||
f431efe5 | 4812 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4813 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4814 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4815 | |
f6bc2008 PA |
4816 | /* If this is a local watchpoint, we only want to check if the |
4817 | watchpoint frame is in scope if the current thread is the thread | |
4818 | that was used to create the watchpoint. */ | |
4819 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4820 | return WP_IGNORE; |
f6bc2008 | 4821 | |
c906108c SS |
4822 | if (b->exp_valid_block == NULL) |
4823 | within_current_scope = 1; | |
4824 | else | |
4825 | { | |
edb3359d DJ |
4826 | struct frame_info *frame = get_current_frame (); |
4827 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4828 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4829 | ||
c9cf6e20 | 4830 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4831 | still in the function but the stack frame has already been |
4832 | invalidated. Since we can't rely on the values of local | |
4833 | variables after the stack has been destroyed, we are treating | |
4834 | the watchpoint in that state as `not changed' without further | |
4835 | checking. Don't mark watchpoints as changed if the current | |
4836 | frame is in an epilogue - even if they are in some other | |
4837 | frame, our view of the stack is likely to be wrong and | |
4838 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4839 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4840 | return WP_IGNORE; |
a0f49112 | 4841 | |
101dcfbe | 4842 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4843 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4844 | |
4845 | /* If we've gotten confused in the unwinder, we might have | |
4846 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4847 | if (within_current_scope) |
4848 | { | |
4849 | struct symbol *function; | |
4850 | ||
4851 | function = get_frame_function (fr); | |
4852 | if (function == NULL | |
4853 | || !contained_in (b->exp_valid_block, | |
4854 | SYMBOL_BLOCK_VALUE (function))) | |
4855 | within_current_scope = 0; | |
4856 | } | |
69fbadd5 | 4857 | |
edb3359d | 4858 | if (within_current_scope) |
c906108c SS |
4859 | /* If we end up stopping, the current frame will get selected |
4860 | in normal_stop. So this call to select_frame won't affect | |
4861 | the user. */ | |
0f7d239c | 4862 | select_frame (fr); |
c906108c | 4863 | } |
c5aa993b | 4864 | |
c906108c SS |
4865 | if (within_current_scope) |
4866 | { | |
4a64f543 MS |
4867 | /* We use value_{,free_to_}mark because it could be a *long* |
4868 | time before we return to the command level and call | |
4869 | free_all_values. We can't call free_all_values because we | |
4870 | might be in the middle of evaluating a function call. */ | |
c906108c | 4871 | |
0cf6dd15 | 4872 | int pc = 0; |
9c06b0b4 | 4873 | struct value *mark; |
fa4727a6 DJ |
4874 | struct value *new_val; |
4875 | ||
c1fc2657 | 4876 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4877 | /* Since we don't know the exact trigger address (from |
4878 | stopped_data_address), just tell the user we've triggered | |
4879 | a mask watchpoint. */ | |
4880 | return WP_VALUE_CHANGED; | |
4881 | ||
4882 | mark = value_mark (); | |
4d01a485 | 4883 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4884 | |
bb9d5f81 PP |
4885 | if (b->val_bitsize != 0) |
4886 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4887 | ||
4a64f543 MS |
4888 | /* We use value_equal_contents instead of value_equal because |
4889 | the latter coerces an array to a pointer, thus comparing just | |
4890 | the address of the array instead of its contents. This is | |
4891 | not what we want. */ | |
fa4727a6 | 4892 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4893 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4894 | new_val))) | |
c906108c | 4895 | { |
c906108c | 4896 | bs->old_val = b->val; |
850645cf | 4897 | b->val = release_value (new_val); |
fa4727a6 | 4898 | b->val_valid = 1; |
850645cf TT |
4899 | if (new_val != NULL) |
4900 | value_free_to_mark (mark); | |
c906108c SS |
4901 | return WP_VALUE_CHANGED; |
4902 | } | |
4903 | else | |
4904 | { | |
60e1c644 | 4905 | /* Nothing changed. */ |
c906108c | 4906 | value_free_to_mark (mark); |
c906108c SS |
4907 | return WP_VALUE_NOT_CHANGED; |
4908 | } | |
4909 | } | |
4910 | else | |
4911 | { | |
4912 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4913 | if we temporarily ignored the watchpoint, then when |
4914 | we reenter the block in which it is valid it contains | |
4915 | garbage (in the case of a function, it may have two | |
4916 | garbage values, one before and one after the prologue). | |
4917 | So we can't even detect the first assignment to it and | |
4918 | watch after that (since the garbage may or may not equal | |
4919 | the first value assigned). */ | |
348d480f PA |
4920 | /* We print all the stop information in |
4921 | breakpoint_ops->print_it, but in this case, by the time we | |
4922 | call breakpoint_ops->print_it this bp will be deleted | |
4923 | already. So we have no choice but print the information | |
4924 | here. */ | |
468afe6c | 4925 | |
0e454242 | 4926 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4927 | { |
4928 | struct ui_out *uiout = current_uiout; | |
4929 | ||
112e8700 SM |
4930 | if (uiout->is_mi_like_p ()) |
4931 | uiout->field_string | |
4932 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4933 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4934 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4935 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4936 | "which its expression is valid.\n"); |
4937 | } | |
4ce44c66 | 4938 | |
cdac0397 | 4939 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4940 | b->commands = NULL; |
d0fb5eae | 4941 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4942 | |
4943 | return WP_DELETED; | |
4944 | } | |
4945 | } | |
4946 | ||
18a18393 | 4947 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4948 | breakpoint location BL. This function does not check if we should |
4949 | stop, only if BL explains the stop. */ | |
4950 | ||
18a18393 | 4951 | static int |
6c95b8df | 4952 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4953 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4954 | const struct target_waitstatus *ws) |
18a18393 VP |
4955 | { |
4956 | struct breakpoint *b = bl->owner; | |
4957 | ||
348d480f | 4958 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4959 | gdb_assert (b != NULL); |
4960 | ||
bd522513 | 4961 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4962 | } |
4963 | ||
3a5c3e22 PA |
4964 | /* Determine if the watched values have actually changed, and we |
4965 | should stop. If not, set BS->stop to 0. */ | |
4966 | ||
18a18393 VP |
4967 | static void |
4968 | bpstat_check_watchpoint (bpstat bs) | |
4969 | { | |
2bdf28a0 | 4970 | const struct bp_location *bl; |
3a5c3e22 | 4971 | struct watchpoint *b; |
2bdf28a0 JK |
4972 | |
4973 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4974 | bl = bs->bp_location_at; |
2bdf28a0 | 4975 | gdb_assert (bl != NULL); |
3a5c3e22 | 4976 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4977 | gdb_assert (b != NULL); |
18a18393 | 4978 | |
18a18393 | 4979 | { |
18a18393 VP |
4980 | int must_check_value = 0; |
4981 | ||
c1fc2657 | 4982 | if (b->type == bp_watchpoint) |
18a18393 VP |
4983 | /* For a software watchpoint, we must always check the |
4984 | watched value. */ | |
4985 | must_check_value = 1; | |
4986 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4987 | /* We have a hardware watchpoint (read, write, or access) | |
4988 | and the target earlier reported an address watched by | |
4989 | this watchpoint. */ | |
4990 | must_check_value = 1; | |
4991 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 4992 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
4993 | /* We were stopped by a hardware watchpoint, but the target could |
4994 | not report the data address. We must check the watchpoint's | |
4995 | value. Access and read watchpoints are out of luck; without | |
4996 | a data address, we can't figure it out. */ | |
4997 | must_check_value = 1; | |
3a5c3e22 | 4998 | |
18a18393 VP |
4999 | if (must_check_value) |
5000 | { | |
bf469271 PA |
5001 | wp_check_result e; |
5002 | ||
a70b8144 | 5003 | try |
bf469271 PA |
5004 | { |
5005 | e = watchpoint_check (bs); | |
5006 | } | |
230d2906 | 5007 | catch (const gdb_exception &ex) |
bf469271 PA |
5008 | { |
5009 | exception_fprintf (gdb_stderr, ex, | |
5010 | "Error evaluating expression " | |
5011 | "for watchpoint %d\n", | |
5012 | b->number); | |
5013 | ||
5014 | SWITCH_THRU_ALL_UIS () | |
5015 | { | |
5016 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5017 | b->number); | |
5018 | } | |
5019 | watchpoint_del_at_next_stop (b); | |
5020 | e = WP_DELETED; | |
5021 | } | |
bf469271 | 5022 | |
18a18393 VP |
5023 | switch (e) |
5024 | { | |
5025 | case WP_DELETED: | |
5026 | /* We've already printed what needs to be printed. */ | |
5027 | bs->print_it = print_it_done; | |
5028 | /* Stop. */ | |
5029 | break; | |
60e1c644 PA |
5030 | case WP_IGNORE: |
5031 | bs->print_it = print_it_noop; | |
5032 | bs->stop = 0; | |
5033 | break; | |
18a18393 | 5034 | case WP_VALUE_CHANGED: |
c1fc2657 | 5035 | if (b->type == bp_read_watchpoint) |
18a18393 | 5036 | { |
85d721b8 PA |
5037 | /* There are two cases to consider here: |
5038 | ||
4a64f543 | 5039 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5040 | In that case, trust the target, and always report |
5041 | the watchpoint hit to the user. Even though | |
5042 | reads don't cause value changes, the value may | |
5043 | have changed since the last time it was read, and | |
5044 | since we're not trapping writes, we will not see | |
5045 | those, and as such we should ignore our notion of | |
5046 | old value. | |
5047 | ||
4a64f543 | 5048 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5049 | reads and writes. There are two ways this may |
5050 | happen: | |
5051 | ||
4a64f543 | 5052 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5053 | reads only, but can break on accesses (reads or |
5054 | writes), such as e.g., x86. We detect this case | |
5055 | at the time we try to insert read watchpoints. | |
5056 | ||
4a64f543 | 5057 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5058 | watchpoints, but, the user set an access or write |
5059 | watchpoint watching the same memory as this read | |
5060 | watchpoint. | |
5061 | ||
5062 | If we're watching memory writes as well as reads, | |
5063 | ignore watchpoint hits when we find that the | |
5064 | value hasn't changed, as reads don't cause | |
5065 | changes. This still gives false positives when | |
5066 | the program writes the same value to memory as | |
5067 | what there was already in memory (we will confuse | |
5068 | it for a read), but it's much better than | |
5069 | nothing. */ | |
5070 | ||
5071 | int other_write_watchpoint = 0; | |
5072 | ||
5073 | if (bl->watchpoint_type == hw_read) | |
5074 | { | |
5075 | struct breakpoint *other_b; | |
5076 | ||
5077 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5078 | if (other_b->type == bp_hardware_watchpoint |
5079 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5080 | { |
3a5c3e22 PA |
5081 | struct watchpoint *other_w = |
5082 | (struct watchpoint *) other_b; | |
5083 | ||
5084 | if (other_w->watchpoint_triggered | |
5085 | == watch_triggered_yes) | |
5086 | { | |
5087 | other_write_watchpoint = 1; | |
5088 | break; | |
5089 | } | |
85d721b8 PA |
5090 | } |
5091 | } | |
5092 | ||
5093 | if (other_write_watchpoint | |
5094 | || bl->watchpoint_type == hw_access) | |
5095 | { | |
5096 | /* We're watching the same memory for writes, | |
5097 | and the value changed since the last time we | |
5098 | updated it, so this trap must be for a write. | |
5099 | Ignore it. */ | |
5100 | bs->print_it = print_it_noop; | |
5101 | bs->stop = 0; | |
5102 | } | |
18a18393 VP |
5103 | } |
5104 | break; | |
5105 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5106 | if (b->type == bp_hardware_watchpoint |
5107 | || b->type == bp_watchpoint) | |
18a18393 VP |
5108 | { |
5109 | /* Don't stop: write watchpoints shouldn't fire if | |
5110 | the value hasn't changed. */ | |
5111 | bs->print_it = print_it_noop; | |
5112 | bs->stop = 0; | |
5113 | } | |
5114 | /* Stop. */ | |
5115 | break; | |
5116 | default: | |
5117 | /* Can't happen. */ | |
18a18393 VP |
5118 | break; |
5119 | } | |
5120 | } | |
5121 | else /* must_check_value == 0 */ | |
5122 | { | |
5123 | /* This is a case where some watchpoint(s) triggered, but | |
5124 | not at the address of this watchpoint, or else no | |
5125 | watchpoint triggered after all. So don't print | |
5126 | anything for this watchpoint. */ | |
5127 | bs->print_it = print_it_noop; | |
5128 | bs->stop = 0; | |
5129 | } | |
5130 | } | |
5131 | } | |
5132 | ||
7d4df6a4 DE |
5133 | /* For breakpoints that are currently marked as telling gdb to stop, |
5134 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5135 | of breakpoint referred to by BS. If we should not stop for this |
5136 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5137 | |
18a18393 | 5138 | static void |
00431a78 | 5139 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5140 | { |
2bdf28a0 JK |
5141 | const struct bp_location *bl; |
5142 | struct breakpoint *b; | |
bf469271 PA |
5143 | /* Assume stop. */ |
5144 | bool condition_result = true; | |
7d4df6a4 DE |
5145 | struct expression *cond; |
5146 | ||
5147 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5148 | |
5149 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5150 | bl = bs->bp_location_at; |
2bdf28a0 | 5151 | gdb_assert (bl != NULL); |
f431efe5 | 5152 | b = bs->breakpoint_at; |
2bdf28a0 | 5153 | gdb_assert (b != NULL); |
18a18393 | 5154 | |
b775012e LM |
5155 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5156 | need to do so again since GDB does not know if we stopped due to a | |
5157 | breakpoint or a single step breakpoint. */ | |
5158 | ||
18a18393 | 5159 | if (frame_id_p (b->frame_id) |
edb3359d | 5160 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5161 | { |
7d4df6a4 DE |
5162 | bs->stop = 0; |
5163 | return; | |
5164 | } | |
60e1c644 | 5165 | |
12ab52e9 PA |
5166 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5167 | evaluating the condition if this isn't the specified | |
5168 | thread/task. */ | |
00431a78 PA |
5169 | if ((b->thread != -1 && b->thread != thread->global_num) |
5170 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5171 | { |
5172 | bs->stop = 0; | |
5173 | return; | |
5174 | } | |
5175 | ||
6dddc817 DE |
5176 | /* Evaluate extension language breakpoints that have a "stop" method |
5177 | implemented. */ | |
5178 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5179 | |
7d4df6a4 DE |
5180 | if (is_watchpoint (b)) |
5181 | { | |
5182 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5183 | |
4d01a485 | 5184 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5185 | } |
5186 | else | |
4d01a485 | 5187 | cond = bl->cond.get (); |
60e1c644 | 5188 | |
7d4df6a4 DE |
5189 | if (cond && b->disposition != disp_del_at_next_stop) |
5190 | { | |
5191 | int within_current_scope = 1; | |
5192 | struct watchpoint * w; | |
60e1c644 | 5193 | |
7d4df6a4 DE |
5194 | /* We use value_mark and value_free_to_mark because it could |
5195 | be a long time before we return to the command level and | |
5196 | call free_all_values. We can't call free_all_values | |
5197 | because we might be in the middle of evaluating a | |
5198 | function call. */ | |
5199 | struct value *mark = value_mark (); | |
5200 | ||
5201 | if (is_watchpoint (b)) | |
5202 | w = (struct watchpoint *) b; | |
5203 | else | |
5204 | w = NULL; | |
5205 | ||
5206 | /* Need to select the frame, with all that implies so that | |
5207 | the conditions will have the right context. Because we | |
5208 | use the frame, we will not see an inlined function's | |
5209 | variables when we arrive at a breakpoint at the start | |
5210 | of the inlined function; the current frame will be the | |
5211 | call site. */ | |
5212 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5213 | select_frame (get_current_frame ()); | |
5214 | else | |
18a18393 | 5215 | { |
7d4df6a4 DE |
5216 | struct frame_info *frame; |
5217 | ||
5218 | /* For local watchpoint expressions, which particular | |
5219 | instance of a local is being watched matters, so we | |
5220 | keep track of the frame to evaluate the expression | |
5221 | in. To evaluate the condition however, it doesn't | |
5222 | really matter which instantiation of the function | |
5223 | where the condition makes sense triggers the | |
5224 | watchpoint. This allows an expression like "watch | |
5225 | global if q > 10" set in `func', catch writes to | |
5226 | global on all threads that call `func', or catch | |
5227 | writes on all recursive calls of `func' by a single | |
5228 | thread. We simply always evaluate the condition in | |
5229 | the innermost frame that's executing where it makes | |
5230 | sense to evaluate the condition. It seems | |
5231 | intuitive. */ | |
5232 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5233 | if (frame != NULL) | |
5234 | select_frame (frame); | |
5235 | else | |
5236 | within_current_scope = 0; | |
18a18393 | 5237 | } |
7d4df6a4 | 5238 | if (within_current_scope) |
bf469271 | 5239 | { |
a70b8144 | 5240 | try |
bf469271 PA |
5241 | { |
5242 | condition_result = breakpoint_cond_eval (cond); | |
5243 | } | |
230d2906 | 5244 | catch (const gdb_exception &ex) |
bf469271 PA |
5245 | { |
5246 | exception_fprintf (gdb_stderr, ex, | |
5247 | "Error in testing breakpoint condition:\n"); | |
5248 | } | |
bf469271 | 5249 | } |
7d4df6a4 | 5250 | else |
18a18393 | 5251 | { |
7d4df6a4 DE |
5252 | warning (_("Watchpoint condition cannot be tested " |
5253 | "in the current scope")); | |
5254 | /* If we failed to set the right context for this | |
5255 | watchpoint, unconditionally report it. */ | |
18a18393 | 5256 | } |
7d4df6a4 DE |
5257 | /* FIXME-someday, should give breakpoint #. */ |
5258 | value_free_to_mark (mark); | |
18a18393 | 5259 | } |
7d4df6a4 | 5260 | |
bf469271 | 5261 | if (cond && !condition_result) |
7d4df6a4 DE |
5262 | { |
5263 | bs->stop = 0; | |
5264 | } | |
7d4df6a4 DE |
5265 | else if (b->ignore_count > 0) |
5266 | { | |
5267 | b->ignore_count--; | |
5268 | bs->stop = 0; | |
5269 | /* Increase the hit count even though we don't stop. */ | |
5270 | ++(b->hit_count); | |
76727919 | 5271 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5272 | } |
18a18393 VP |
5273 | } |
5274 | ||
1cf4d951 PA |
5275 | /* Returns true if we need to track moribund locations of LOC's type |
5276 | on the current target. */ | |
5277 | ||
5278 | static int | |
5279 | need_moribund_for_location_type (struct bp_location *loc) | |
5280 | { | |
5281 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5282 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5283 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5284 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5285 | } | |
5286 | ||
ddfe970e | 5287 | /* See breakpoint.h. */ |
c906108c SS |
5288 | |
5289 | bpstat | |
ddfe970e | 5290 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5291 | const struct target_waitstatus *ws) |
c906108c | 5292 | { |
ddfe970e | 5293 | struct breakpoint *b; |
5760d0ab | 5294 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5295 | |
429374b8 JK |
5296 | ALL_BREAKPOINTS (b) |
5297 | { | |
1a853c52 | 5298 | if (!breakpoint_enabled (b)) |
429374b8 | 5299 | continue; |
a5606eee | 5300 | |
ddfe970e | 5301 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5302 | { |
4a64f543 MS |
5303 | /* For hardware watchpoints, we look only at the first |
5304 | location. The watchpoint_check function will work on the | |
5305 | entire expression, not the individual locations. For | |
5306 | read watchpoints, the watchpoints_triggered function has | |
5307 | checked all locations already. */ | |
429374b8 JK |
5308 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5309 | break; | |
18a18393 | 5310 | |
f6592439 | 5311 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5312 | continue; |
c5aa993b | 5313 | |
09ac7c10 | 5314 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5315 | continue; |
c5aa993b | 5316 | |
4a64f543 MS |
5317 | /* Come here if it's a watchpoint, or if the break address |
5318 | matches. */ | |
c5aa993b | 5319 | |
ddfe970e KS |
5320 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5321 | explain stop. */ | |
c5aa993b | 5322 | |
f431efe5 PA |
5323 | /* Assume we stop. Should we find a watchpoint that is not |
5324 | actually triggered, or if the condition of the breakpoint | |
5325 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5326 | bs->stop = 1; |
5327 | bs->print = 1; | |
d983da9c | 5328 | |
f431efe5 PA |
5329 | /* If this is a scope breakpoint, mark the associated |
5330 | watchpoint as triggered so that we will handle the | |
5331 | out-of-scope event. We'll get to the watchpoint next | |
5332 | iteration. */ | |
d0fb5eae | 5333 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5334 | { |
5335 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5336 | ||
5337 | w->watchpoint_triggered = watch_triggered_yes; | |
5338 | } | |
f431efe5 PA |
5339 | } |
5340 | } | |
5341 | ||
7c16b83e | 5342 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5343 | if (!target_supports_stopped_by_sw_breakpoint () |
5344 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5345 | { |
1123588c | 5346 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5347 | { |
1cf4d951 PA |
5348 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5349 | && need_moribund_for_location_type (loc)) | |
5350 | { | |
ddfe970e | 5351 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5352 | /* For hits of moribund locations, we should just proceed. */ |
5353 | bs->stop = 0; | |
5354 | bs->print = 0; | |
5355 | bs->print_it = print_it_noop; | |
5356 | } | |
f431efe5 PA |
5357 | } |
5358 | } | |
5359 | ||
ddfe970e KS |
5360 | return bs_head; |
5361 | } | |
5362 | ||
5363 | /* See breakpoint.h. */ | |
5364 | ||
5365 | bpstat | |
5366 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5367 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5368 | const struct target_waitstatus *ws, |
5369 | bpstat stop_chain) | |
5370 | { | |
5371 | struct breakpoint *b = NULL; | |
5372 | /* First item of allocated bpstat's. */ | |
5373 | bpstat bs_head = stop_chain; | |
5374 | bpstat bs; | |
5375 | int need_remove_insert; | |
5376 | int removed_any; | |
5377 | ||
5378 | /* First, build the bpstat chain with locations that explain a | |
5379 | target stop, while being careful to not set the target running, | |
5380 | as that may invalidate locations (in particular watchpoint | |
5381 | locations are recreated). Resuming will happen here with | |
5382 | breakpoint conditions or watchpoint expressions that include | |
5383 | inferior function calls. */ | |
5384 | if (bs_head == NULL) | |
5385 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5386 | ||
edcc5120 TT |
5387 | /* A bit of special processing for shlib breakpoints. We need to |
5388 | process solib loading here, so that the lists of loaded and | |
5389 | unloaded libraries are correct before we handle "catch load" and | |
5390 | "catch unload". */ | |
5391 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5392 | { | |
5d268276 | 5393 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5394 | { |
5395 | handle_solib_event (); | |
5396 | break; | |
5397 | } | |
5398 | } | |
5399 | ||
f431efe5 PA |
5400 | /* Now go through the locations that caused the target to stop, and |
5401 | check whether we're interested in reporting this stop to higher | |
5402 | layers, or whether we should resume the target transparently. */ | |
5403 | ||
5404 | removed_any = 0; | |
5405 | ||
5760d0ab | 5406 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5407 | { |
5408 | if (!bs->stop) | |
5409 | continue; | |
5410 | ||
f431efe5 | 5411 | b = bs->breakpoint_at; |
348d480f PA |
5412 | b->ops->check_status (bs); |
5413 | if (bs->stop) | |
28010a5d | 5414 | { |
00431a78 | 5415 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5416 | |
429374b8 JK |
5417 | if (bs->stop) |
5418 | { | |
5419 | ++(b->hit_count); | |
76727919 | 5420 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5421 | |
4a64f543 | 5422 | /* We will stop here. */ |
429374b8 JK |
5423 | if (b->disposition == disp_disable) |
5424 | { | |
816338b5 | 5425 | --(b->enable_count); |
1a853c52 | 5426 | if (b->enable_count <= 0) |
429374b8 | 5427 | b->enable_state = bp_disabled; |
f431efe5 | 5428 | removed_any = 1; |
429374b8 JK |
5429 | } |
5430 | if (b->silent) | |
5431 | bs->print = 0; | |
5432 | bs->commands = b->commands; | |
abf85f46 | 5433 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5434 | ? bs->commands.get () : NULL)) |
abf85f46 | 5435 | bs->print = 0; |
9d6e6e84 HZ |
5436 | |
5437 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5438 | } |
5439 | ||
348d480f | 5440 | } |
a9b3a50f PA |
5441 | |
5442 | /* Print nothing for this entry if we don't stop or don't | |
5443 | print. */ | |
5444 | if (!bs->stop || !bs->print) | |
5445 | bs->print_it = print_it_noop; | |
429374b8 | 5446 | } |
876fa593 | 5447 | |
d983da9c DJ |
5448 | /* If we aren't stopping, the value of some hardware watchpoint may |
5449 | not have changed, but the intermediate memory locations we are | |
5450 | watching may have. Don't bother if we're stopping; this will get | |
5451 | done later. */ | |
d832cb68 | 5452 | need_remove_insert = 0; |
5760d0ab JK |
5453 | if (! bpstat_causes_stop (bs_head)) |
5454 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5455 | if (!bs->stop |
f431efe5 PA |
5456 | && bs->breakpoint_at |
5457 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5458 | { |
3a5c3e22 PA |
5459 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5460 | ||
5461 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5462 | need_remove_insert = 1; |
d983da9c DJ |
5463 | } |
5464 | ||
d832cb68 | 5465 | if (need_remove_insert) |
44702360 | 5466 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5467 | else if (removed_any) |
44702360 | 5468 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5469 | |
5760d0ab | 5470 | return bs_head; |
c906108c | 5471 | } |
628fe4e4 JK |
5472 | |
5473 | static void | |
5474 | handle_jit_event (void) | |
5475 | { | |
5476 | struct frame_info *frame; | |
5477 | struct gdbarch *gdbarch; | |
5478 | ||
243a9253 PA |
5479 | if (debug_infrun) |
5480 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5481 | ||
628fe4e4 JK |
5482 | /* Switch terminal for any messages produced by |
5483 | breakpoint_re_set. */ | |
223ffa71 | 5484 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5485 | |
5486 | frame = get_current_frame (); | |
5487 | gdbarch = get_frame_arch (frame); | |
5488 | ||
5489 | jit_event_handler (gdbarch); | |
5490 | ||
223ffa71 | 5491 | target_terminal::inferior (); |
628fe4e4 JK |
5492 | } |
5493 | ||
5494 | /* Prepare WHAT final decision for infrun. */ | |
5495 | ||
5496 | /* Decide what infrun needs to do with this bpstat. */ | |
5497 | ||
c906108c | 5498 | struct bpstat_what |
0e30163f | 5499 | bpstat_what (bpstat bs_head) |
c906108c | 5500 | { |
c906108c | 5501 | struct bpstat_what retval; |
0e30163f | 5502 | bpstat bs; |
c906108c | 5503 | |
628fe4e4 | 5504 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5505 | retval.call_dummy = STOP_NONE; |
186c406b | 5506 | retval.is_longjmp = 0; |
628fe4e4 | 5507 | |
0e30163f | 5508 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5509 | { |
628fe4e4 JK |
5510 | /* Extract this BS's action. After processing each BS, we check |
5511 | if its action overrides all we've seem so far. */ | |
5512 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5513 | enum bptype bptype; | |
5514 | ||
c906108c | 5515 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5516 | { |
5517 | /* I suspect this can happen if it was a momentary | |
5518 | breakpoint which has since been deleted. */ | |
5519 | bptype = bp_none; | |
5520 | } | |
20874c92 | 5521 | else |
f431efe5 | 5522 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5523 | |
5524 | switch (bptype) | |
c906108c SS |
5525 | { |
5526 | case bp_none: | |
628fe4e4 | 5527 | break; |
c906108c SS |
5528 | case bp_breakpoint: |
5529 | case bp_hardware_breakpoint: | |
7c16b83e | 5530 | case bp_single_step: |
c906108c SS |
5531 | case bp_until: |
5532 | case bp_finish: | |
a9b3a50f | 5533 | case bp_shlib_event: |
c906108c SS |
5534 | if (bs->stop) |
5535 | { | |
5536 | if (bs->print) | |
628fe4e4 | 5537 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5538 | else |
628fe4e4 | 5539 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5540 | } |
5541 | else | |
628fe4e4 | 5542 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5543 | break; |
5544 | case bp_watchpoint: | |
5545 | case bp_hardware_watchpoint: | |
5546 | case bp_read_watchpoint: | |
5547 | case bp_access_watchpoint: | |
5548 | if (bs->stop) | |
5549 | { | |
5550 | if (bs->print) | |
628fe4e4 | 5551 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5552 | else |
628fe4e4 | 5553 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5554 | } |
5555 | else | |
628fe4e4 JK |
5556 | { |
5557 | /* There was a watchpoint, but we're not stopping. | |
5558 | This requires no further action. */ | |
5559 | } | |
c906108c SS |
5560 | break; |
5561 | case bp_longjmp: | |
e2e4d78b | 5562 | case bp_longjmp_call_dummy: |
186c406b | 5563 | case bp_exception: |
0a39bb32 PA |
5564 | if (bs->stop) |
5565 | { | |
5566 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5567 | retval.is_longjmp = bptype != bp_exception; | |
5568 | } | |
5569 | else | |
5570 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5571 | break; |
5572 | case bp_longjmp_resume: | |
186c406b | 5573 | case bp_exception_resume: |
0a39bb32 PA |
5574 | if (bs->stop) |
5575 | { | |
5576 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5577 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5578 | } | |
5579 | else | |
5580 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5581 | break; |
5582 | case bp_step_resume: | |
5583 | if (bs->stop) | |
628fe4e4 JK |
5584 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5585 | else | |
c906108c | 5586 | { |
628fe4e4 JK |
5587 | /* It is for the wrong frame. */ |
5588 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5589 | } |
c906108c | 5590 | break; |
2c03e5be PA |
5591 | case bp_hp_step_resume: |
5592 | if (bs->stop) | |
5593 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5594 | else | |
5595 | { | |
5596 | /* It is for the wrong frame. */ | |
5597 | this_action = BPSTAT_WHAT_SINGLE; | |
5598 | } | |
5599 | break; | |
c906108c | 5600 | case bp_watchpoint_scope: |
c4093a6a | 5601 | case bp_thread_event: |
1900040c | 5602 | case bp_overlay_event: |
0fd8e87f | 5603 | case bp_longjmp_master: |
aa7d318d | 5604 | case bp_std_terminate_master: |
186c406b | 5605 | case bp_exception_master: |
628fe4e4 | 5606 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5607 | break; |
ce78b96d | 5608 | case bp_catchpoint: |
c5aa993b JM |
5609 | if (bs->stop) |
5610 | { | |
5611 | if (bs->print) | |
628fe4e4 | 5612 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5613 | else |
628fe4e4 | 5614 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5615 | } |
5616 | else | |
628fe4e4 JK |
5617 | { |
5618 | /* There was a catchpoint, but we're not stopping. | |
5619 | This requires no further action. */ | |
5620 | } | |
5621 | break; | |
628fe4e4 | 5622 | case bp_jit_event: |
628fe4e4 | 5623 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5624 | break; |
c906108c | 5625 | case bp_call_dummy: |
53a5351d JM |
5626 | /* Make sure the action is stop (silent or noisy), |
5627 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5628 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5629 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5630 | break; |
5631 | case bp_std_terminate: | |
5632 | /* Make sure the action is stop (silent or noisy), | |
5633 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5634 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5635 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5636 | break; |
1042e4c0 | 5637 | case bp_tracepoint: |
7a697b8d | 5638 | case bp_fast_tracepoint: |
0fb4aa4b | 5639 | case bp_static_tracepoint: |
1042e4c0 SS |
5640 | /* Tracepoint hits should not be reported back to GDB, and |
5641 | if one got through somehow, it should have been filtered | |
5642 | out already. */ | |
5643 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5644 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5645 | break; |
5646 | case bp_gnu_ifunc_resolver: | |
5647 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5648 | this_action = BPSTAT_WHAT_SINGLE; | |
5649 | break; | |
5650 | case bp_gnu_ifunc_resolver_return: | |
5651 | /* The breakpoint will be removed, execution will restart from the | |
5652 | PC of the former breakpoint. */ | |
5653 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5654 | break; | |
e7e0cddf SS |
5655 | |
5656 | case bp_dprintf: | |
a11cfd87 HZ |
5657 | if (bs->stop) |
5658 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5659 | else | |
5660 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5661 | break; |
5662 | ||
628fe4e4 JK |
5663 | default: |
5664 | internal_error (__FILE__, __LINE__, | |
5665 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5666 | } |
628fe4e4 | 5667 | |
325fac50 | 5668 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5669 | } |
628fe4e4 | 5670 | |
243a9253 PA |
5671 | return retval; |
5672 | } | |
628fe4e4 | 5673 | |
243a9253 PA |
5674 | void |
5675 | bpstat_run_callbacks (bpstat bs_head) | |
5676 | { | |
5677 | bpstat bs; | |
628fe4e4 | 5678 | |
0e30163f JK |
5679 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5680 | { | |
5681 | struct breakpoint *b = bs->breakpoint_at; | |
5682 | ||
5683 | if (b == NULL) | |
5684 | continue; | |
5685 | switch (b->type) | |
5686 | { | |
243a9253 PA |
5687 | case bp_jit_event: |
5688 | handle_jit_event (); | |
5689 | break; | |
0e30163f JK |
5690 | case bp_gnu_ifunc_resolver: |
5691 | gnu_ifunc_resolver_stop (b); | |
5692 | break; | |
5693 | case bp_gnu_ifunc_resolver_return: | |
5694 | gnu_ifunc_resolver_return_stop (b); | |
5695 | break; | |
5696 | } | |
5697 | } | |
c906108c SS |
5698 | } |
5699 | ||
5700 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5701 | without hardware support). This isn't related to a specific bpstat, | |
5702 | just to things like whether watchpoints are set. */ | |
5703 | ||
c5aa993b | 5704 | int |
fba45db2 | 5705 | bpstat_should_step (void) |
c906108c SS |
5706 | { |
5707 | struct breakpoint *b; | |
cc59ec59 | 5708 | |
c906108c | 5709 | ALL_BREAKPOINTS (b) |
717a8278 | 5710 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5711 | return 1; |
c906108c SS |
5712 | return 0; |
5713 | } | |
5714 | ||
67822962 PA |
5715 | int |
5716 | bpstat_causes_stop (bpstat bs) | |
5717 | { | |
5718 | for (; bs != NULL; bs = bs->next) | |
5719 | if (bs->stop) | |
5720 | return 1; | |
5721 | ||
5722 | return 0; | |
5723 | } | |
5724 | ||
c906108c | 5725 | \f |
c5aa993b | 5726 | |
170b53b2 UW |
5727 | /* Compute a string of spaces suitable to indent the next line |
5728 | so it starts at the position corresponding to the table column | |
5729 | named COL_NAME in the currently active table of UIOUT. */ | |
5730 | ||
5731 | static char * | |
5732 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5733 | { | |
5734 | static char wrap_indent[80]; | |
5735 | int i, total_width, width, align; | |
c5209615 | 5736 | const char *text; |
170b53b2 UW |
5737 | |
5738 | total_width = 0; | |
112e8700 | 5739 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5740 | { |
5741 | if (strcmp (text, col_name) == 0) | |
5742 | { | |
5743 | gdb_assert (total_width < sizeof wrap_indent); | |
5744 | memset (wrap_indent, ' ', total_width); | |
5745 | wrap_indent[total_width] = 0; | |
5746 | ||
5747 | return wrap_indent; | |
5748 | } | |
5749 | ||
5750 | total_width += width + 1; | |
5751 | } | |
5752 | ||
5753 | return NULL; | |
5754 | } | |
5755 | ||
b775012e LM |
5756 | /* Determine if the locations of this breakpoint will have their conditions |
5757 | evaluated by the target, host or a mix of both. Returns the following: | |
5758 | ||
5759 | "host": Host evals condition. | |
5760 | "host or target": Host or Target evals condition. | |
5761 | "target": Target evals condition. | |
5762 | */ | |
5763 | ||
5764 | static const char * | |
5765 | bp_condition_evaluator (struct breakpoint *b) | |
5766 | { | |
5767 | struct bp_location *bl; | |
5768 | char host_evals = 0; | |
5769 | char target_evals = 0; | |
5770 | ||
5771 | if (!b) | |
5772 | return NULL; | |
5773 | ||
5774 | if (!is_breakpoint (b)) | |
5775 | return NULL; | |
5776 | ||
5777 | if (gdb_evaluates_breakpoint_condition_p () | |
5778 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5779 | return condition_evaluation_host; | |
5780 | ||
5781 | for (bl = b->loc; bl; bl = bl->next) | |
5782 | { | |
5783 | if (bl->cond_bytecode) | |
5784 | target_evals++; | |
5785 | else | |
5786 | host_evals++; | |
5787 | } | |
5788 | ||
5789 | if (host_evals && target_evals) | |
5790 | return condition_evaluation_both; | |
5791 | else if (target_evals) | |
5792 | return condition_evaluation_target; | |
5793 | else | |
5794 | return condition_evaluation_host; | |
5795 | } | |
5796 | ||
5797 | /* Determine the breakpoint location's condition evaluator. This is | |
5798 | similar to bp_condition_evaluator, but for locations. */ | |
5799 | ||
5800 | static const char * | |
5801 | bp_location_condition_evaluator (struct bp_location *bl) | |
5802 | { | |
5803 | if (bl && !is_breakpoint (bl->owner)) | |
5804 | return NULL; | |
5805 | ||
5806 | if (gdb_evaluates_breakpoint_condition_p () | |
5807 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5808 | return condition_evaluation_host; | |
5809 | ||
5810 | if (bl && bl->cond_bytecode) | |
5811 | return condition_evaluation_target; | |
5812 | else | |
5813 | return condition_evaluation_host; | |
5814 | } | |
5815 | ||
859825b8 JK |
5816 | /* Print the LOC location out of the list of B->LOC locations. */ |
5817 | ||
170b53b2 UW |
5818 | static void |
5819 | print_breakpoint_location (struct breakpoint *b, | |
5820 | struct bp_location *loc) | |
0d381245 | 5821 | { |
79a45e25 | 5822 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5823 | |
5824 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5825 | |
859825b8 JK |
5826 | if (loc != NULL && loc->shlib_disabled) |
5827 | loc = NULL; | |
5828 | ||
6c95b8df PA |
5829 | if (loc != NULL) |
5830 | set_current_program_space (loc->pspace); | |
5831 | ||
56435ebe | 5832 | if (b->display_canonical) |
d28cd78a | 5833 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5834 | else if (loc && loc->symtab) |
0d381245 | 5835 | { |
4a27f119 KS |
5836 | const struct symbol *sym = loc->symbol; |
5837 | ||
0d381245 VP |
5838 | if (sym) |
5839 | { | |
112e8700 | 5840 | uiout->text ("in "); |
cbe56571 TT |
5841 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
5842 | ui_out_style_kind::FUNCTION); | |
112e8700 SM |
5843 | uiout->text (" "); |
5844 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5845 | uiout->text ("at "); | |
0d381245 | 5846 | } |
112e8700 | 5847 | uiout->field_string ("file", |
cbe56571 TT |
5848 | symtab_to_filename_for_display (loc->symtab), |
5849 | ui_out_style_kind::FILE); | |
112e8700 | 5850 | uiout->text (":"); |
05cba821 | 5851 | |
112e8700 SM |
5852 | if (uiout->is_mi_like_p ()) |
5853 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5854 | |
112e8700 | 5855 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5856 | } |
859825b8 | 5857 | else if (loc) |
0d381245 | 5858 | { |
d7e74731 | 5859 | string_file stb; |
170b53b2 | 5860 | |
d7e74731 | 5861 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5862 | demangle, ""); |
112e8700 | 5863 | uiout->field_stream ("at", stb); |
0d381245 | 5864 | } |
859825b8 | 5865 | else |
f00aae0f | 5866 | { |
d28cd78a TT |
5867 | uiout->field_string ("pending", |
5868 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5869 | /* If extra_string is available, it could be holding a condition |
5870 | or dprintf arguments. In either case, make sure it is printed, | |
5871 | too, but only for non-MI streams. */ | |
112e8700 | 5872 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5873 | { |
5874 | if (b->type == bp_dprintf) | |
112e8700 | 5875 | uiout->text (","); |
f00aae0f | 5876 | else |
112e8700 SM |
5877 | uiout->text (" "); |
5878 | uiout->text (b->extra_string); | |
f00aae0f KS |
5879 | } |
5880 | } | |
6c95b8df | 5881 | |
b775012e LM |
5882 | if (loc && is_breakpoint (b) |
5883 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5884 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5885 | { | |
112e8700 SM |
5886 | uiout->text (" ("); |
5887 | uiout->field_string ("evaluated-by", | |
b775012e | 5888 | bp_location_condition_evaluator (loc)); |
112e8700 | 5889 | uiout->text (")"); |
b775012e | 5890 | } |
0d381245 VP |
5891 | } |
5892 | ||
269b11a2 PA |
5893 | static const char * |
5894 | bptype_string (enum bptype type) | |
c906108c | 5895 | { |
c4093a6a JM |
5896 | struct ep_type_description |
5897 | { | |
5898 | enum bptype type; | |
a121b7c1 | 5899 | const char *description; |
c4093a6a JM |
5900 | }; |
5901 | static struct ep_type_description bptypes[] = | |
c906108c | 5902 | { |
c5aa993b JM |
5903 | {bp_none, "?deleted?"}, |
5904 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5905 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5906 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5907 | {bp_until, "until"}, |
5908 | {bp_finish, "finish"}, | |
5909 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5910 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5911 | {bp_read_watchpoint, "read watchpoint"}, |
5912 | {bp_access_watchpoint, "acc watchpoint"}, | |
5913 | {bp_longjmp, "longjmp"}, | |
5914 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5915 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5916 | {bp_exception, "exception"}, |
5917 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5918 | {bp_step_resume, "step resume"}, |
2c03e5be | 5919 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5920 | {bp_watchpoint_scope, "watchpoint scope"}, |
5921 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5922 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5923 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5924 | {bp_thread_event, "thread events"}, |
1900040c | 5925 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5926 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5927 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5928 | {bp_exception_master, "exception master"}, |
ce78b96d | 5929 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5930 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5931 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5932 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5933 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5934 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5935 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5936 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5937 | }; |
269b11a2 PA |
5938 | |
5939 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5940 | || ((int) type != bptypes[(int) type].type)) | |
5941 | internal_error (__FILE__, __LINE__, | |
5942 | _("bptypes table does not describe type #%d."), | |
5943 | (int) type); | |
5944 | ||
5945 | return bptypes[(int) type].description; | |
5946 | } | |
5947 | ||
998580f1 MK |
5948 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5949 | For CLI, prefix the list with the string 'inf'. */ | |
5950 | ||
5951 | static void | |
5952 | output_thread_groups (struct ui_out *uiout, | |
5953 | const char *field_name, | |
5c632425 | 5954 | const std::vector<int> &inf_nums, |
998580f1 MK |
5955 | int mi_only) |
5956 | { | |
112e8700 | 5957 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5958 | |
5959 | /* For backward compatibility, don't display inferiors in CLI unless | |
5960 | there are several. Always display them for MI. */ | |
5961 | if (!is_mi && mi_only) | |
5962 | return; | |
5963 | ||
10f489e5 | 5964 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5965 | |
5c632425 | 5966 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5967 | { |
5968 | if (is_mi) | |
5969 | { | |
5970 | char mi_group[10]; | |
5971 | ||
5c632425 | 5972 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5973 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5974 | } |
5975 | else | |
5976 | { | |
5977 | if (i == 0) | |
112e8700 | 5978 | uiout->text (" inf "); |
998580f1 | 5979 | else |
112e8700 | 5980 | uiout->text (", "); |
998580f1 | 5981 | |
5c632425 | 5982 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
5983 | } |
5984 | } | |
998580f1 MK |
5985 | } |
5986 | ||
269b11a2 PA |
5987 | /* Print B to gdb_stdout. */ |
5988 | ||
5989 | static void | |
5990 | print_one_breakpoint_location (struct breakpoint *b, | |
5991 | struct bp_location *loc, | |
5992 | int loc_number, | |
5993 | struct bp_location **last_loc, | |
269b11a2 PA |
5994 | int allflag) |
5995 | { | |
5996 | struct command_line *l; | |
c2c6d25f | 5997 | static char bpenables[] = "nynny"; |
c906108c | 5998 | |
79a45e25 | 5999 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6000 | int header_of_multiple = 0; |
6001 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6002 | struct value_print_options opts; |
6003 | ||
6004 | get_user_print_options (&opts); | |
0d381245 VP |
6005 | |
6006 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6007 | /* See comment in print_one_breakpoint concerning treatment of |
6008 | breakpoints with single disabled location. */ | |
0d381245 VP |
6009 | if (loc == NULL |
6010 | && (b->loc != NULL | |
6011 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6012 | header_of_multiple = 1; | |
6013 | if (loc == NULL) | |
6014 | loc = b->loc; | |
6015 | ||
c4093a6a JM |
6016 | annotate_record (); |
6017 | ||
6018 | /* 1 */ | |
6019 | annotate_field (0); | |
0d381245 | 6020 | if (part_of_multiple) |
528e1572 | 6021 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6022 | else |
528e1572 | 6023 | uiout->field_int ("number", b->number); |
c4093a6a JM |
6024 | |
6025 | /* 2 */ | |
6026 | annotate_field (1); | |
0d381245 | 6027 | if (part_of_multiple) |
112e8700 | 6028 | uiout->field_skip ("type"); |
269b11a2 | 6029 | else |
112e8700 | 6030 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6031 | |
6032 | /* 3 */ | |
6033 | annotate_field (2); | |
0d381245 | 6034 | if (part_of_multiple) |
112e8700 | 6035 | uiout->field_skip ("disp"); |
0d381245 | 6036 | else |
112e8700 | 6037 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6038 | |
c4093a6a JM |
6039 | /* 4 */ |
6040 | annotate_field (3); | |
0d381245 | 6041 | if (part_of_multiple) |
112e8700 | 6042 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6043 | else |
112e8700 | 6044 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6045 | |
c4093a6a | 6046 | /* 5 and 6 */ |
3086aeae | 6047 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6048 | { |
4a64f543 MS |
6049 | /* Although the print_one can possibly print all locations, |
6050 | calling it here is not likely to get any nice result. So, | |
6051 | make sure there's just one location. */ | |
0d381245 | 6052 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6053 | b->ops->print_one (b, last_loc); |
0d381245 | 6054 | } |
3086aeae DJ |
6055 | else |
6056 | switch (b->type) | |
6057 | { | |
6058 | case bp_none: | |
6059 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6060 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6061 | break; |
c906108c | 6062 | |
3086aeae DJ |
6063 | case bp_watchpoint: |
6064 | case bp_hardware_watchpoint: | |
6065 | case bp_read_watchpoint: | |
6066 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6067 | { |
6068 | struct watchpoint *w = (struct watchpoint *) b; | |
6069 | ||
6070 | /* Field 4, the address, is omitted (which makes the columns | |
6071 | not line up too nicely with the headers, but the effect | |
6072 | is relatively readable). */ | |
6073 | if (opts.addressprint) | |
112e8700 | 6074 | uiout->field_skip ("addr"); |
3a5c3e22 | 6075 | annotate_field (5); |
112e8700 | 6076 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6077 | } |
3086aeae DJ |
6078 | break; |
6079 | ||
3086aeae DJ |
6080 | case bp_breakpoint: |
6081 | case bp_hardware_breakpoint: | |
7c16b83e | 6082 | case bp_single_step: |
3086aeae DJ |
6083 | case bp_until: |
6084 | case bp_finish: | |
6085 | case bp_longjmp: | |
6086 | case bp_longjmp_resume: | |
e2e4d78b | 6087 | case bp_longjmp_call_dummy: |
186c406b TT |
6088 | case bp_exception: |
6089 | case bp_exception_resume: | |
3086aeae | 6090 | case bp_step_resume: |
2c03e5be | 6091 | case bp_hp_step_resume: |
3086aeae DJ |
6092 | case bp_watchpoint_scope: |
6093 | case bp_call_dummy: | |
aa7d318d | 6094 | case bp_std_terminate: |
3086aeae DJ |
6095 | case bp_shlib_event: |
6096 | case bp_thread_event: | |
6097 | case bp_overlay_event: | |
0fd8e87f | 6098 | case bp_longjmp_master: |
aa7d318d | 6099 | case bp_std_terminate_master: |
186c406b | 6100 | case bp_exception_master: |
1042e4c0 | 6101 | case bp_tracepoint: |
7a697b8d | 6102 | case bp_fast_tracepoint: |
0fb4aa4b | 6103 | case bp_static_tracepoint: |
e7e0cddf | 6104 | case bp_dprintf: |
4efc6507 | 6105 | case bp_jit_event: |
0e30163f JK |
6106 | case bp_gnu_ifunc_resolver: |
6107 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6108 | if (opts.addressprint) |
3086aeae DJ |
6109 | { |
6110 | annotate_field (4); | |
54e52265 | 6111 | if (header_of_multiple) |
112e8700 | 6112 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6113 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6114 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6115 | else |
112e8700 | 6116 | uiout->field_core_addr ("addr", |
5af949e3 | 6117 | loc->gdbarch, loc->address); |
3086aeae DJ |
6118 | } |
6119 | annotate_field (5); | |
0d381245 | 6120 | if (!header_of_multiple) |
170b53b2 | 6121 | print_breakpoint_location (b, loc); |
0d381245 | 6122 | if (b->loc) |
a6d9a66e | 6123 | *last_loc = b->loc; |
3086aeae DJ |
6124 | break; |
6125 | } | |
c906108c | 6126 | |
6c95b8df | 6127 | |
998580f1 | 6128 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6129 | { |
5c632425 | 6130 | std::vector<int> inf_nums; |
998580f1 | 6131 | int mi_only = 1; |
6c95b8df | 6132 | |
08036331 | 6133 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6134 | { |
6135 | if (inf->pspace == loc->pspace) | |
5c632425 | 6136 | inf_nums.push_back (inf->num); |
6c95b8df | 6137 | } |
998580f1 MK |
6138 | |
6139 | /* For backward compatibility, don't display inferiors in CLI unless | |
6140 | there are several. Always display for MI. */ | |
6141 | if (allflag | |
6142 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6143 | && (number_of_program_spaces () > 1 | |
6144 | || number_of_inferiors () > 1) | |
6145 | /* LOC is for existing B, it cannot be in | |
6146 | moribund_locations and thus having NULL OWNER. */ | |
6147 | && loc->owner->type != bp_catchpoint)) | |
6148 | mi_only = 0; | |
5c632425 | 6149 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6150 | } |
6151 | ||
4a306c9a | 6152 | if (!part_of_multiple) |
c4093a6a | 6153 | { |
4a306c9a JB |
6154 | if (b->thread != -1) |
6155 | { | |
6156 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6157 | "stop only in" line a little further down. */ |
112e8700 SM |
6158 | uiout->text (" thread "); |
6159 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6160 | } |
6161 | else if (b->task != 0) | |
6162 | { | |
112e8700 SM |
6163 | uiout->text (" task "); |
6164 | uiout->field_int ("task", b->task); | |
4a306c9a | 6165 | } |
c4093a6a | 6166 | } |
f1310107 | 6167 | |
112e8700 | 6168 | uiout->text ("\n"); |
f1310107 | 6169 | |
348d480f | 6170 | if (!part_of_multiple) |
f1310107 TJB |
6171 | b->ops->print_one_detail (b, uiout); |
6172 | ||
0d381245 | 6173 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6174 | { |
6175 | annotate_field (6); | |
112e8700 | 6176 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6177 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6178 | the frame ID. */ |
112e8700 | 6179 | uiout->field_core_addr ("frame", |
5af949e3 | 6180 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6181 | uiout->text ("\n"); |
c4093a6a JM |
6182 | } |
6183 | ||
28010a5d | 6184 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6185 | { |
6186 | annotate_field (7); | |
d77f58be | 6187 | if (is_tracepoint (b)) |
112e8700 | 6188 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6189 | else |
112e8700 SM |
6190 | uiout->text ("\tstop only if "); |
6191 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6192 | |
6193 | /* Print whether the target is doing the breakpoint's condition | |
6194 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6195 | if (is_breakpoint (b) | |
6196 | && breakpoint_condition_evaluation_mode () | |
6197 | == condition_evaluation_target) | |
6198 | { | |
112e8700 SM |
6199 | uiout->text (" ("); |
6200 | uiout->field_string ("evaluated-by", | |
b775012e | 6201 | bp_condition_evaluator (b)); |
112e8700 | 6202 | uiout->text (" evals)"); |
b775012e | 6203 | } |
112e8700 | 6204 | uiout->text ("\n"); |
0101ce28 JJ |
6205 | } |
6206 | ||
0d381245 | 6207 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6208 | { |
4a64f543 | 6209 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6210 | uiout->text ("\tstop only in thread "); |
6211 | if (uiout->is_mi_like_p ()) | |
6212 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6213 | else |
6214 | { | |
6215 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6216 | ||
112e8700 | 6217 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6218 | } |
112e8700 | 6219 | uiout->text ("\n"); |
c4093a6a JM |
6220 | } |
6221 | ||
556ec64d YQ |
6222 | if (!part_of_multiple) |
6223 | { | |
6224 | if (b->hit_count) | |
31f56a27 YQ |
6225 | { |
6226 | /* FIXME should make an annotation for this. */ | |
6227 | if (is_catchpoint (b)) | |
112e8700 | 6228 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6229 | else if (is_tracepoint (b)) |
112e8700 | 6230 | uiout->text ("\ttracepoint"); |
31f56a27 | 6231 | else |
112e8700 SM |
6232 | uiout->text ("\tbreakpoint"); |
6233 | uiout->text (" already hit "); | |
6234 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6235 | if (b->hit_count == 1) |
112e8700 | 6236 | uiout->text (" time\n"); |
31f56a27 | 6237 | else |
112e8700 | 6238 | uiout->text (" times\n"); |
31f56a27 | 6239 | } |
556ec64d YQ |
6240 | else |
6241 | { | |
31f56a27 | 6242 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6243 | if (uiout->is_mi_like_p ()) |
6244 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6245 | } |
6246 | } | |
8b93c638 | 6247 | |
0d381245 | 6248 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6249 | { |
6250 | annotate_field (8); | |
112e8700 SM |
6251 | uiout->text ("\tignore next "); |
6252 | uiout->field_int ("ignore", b->ignore_count); | |
6253 | uiout->text (" hits\n"); | |
c4093a6a | 6254 | } |
059fb39f | 6255 | |
816338b5 SS |
6256 | /* Note that an enable count of 1 corresponds to "enable once" |
6257 | behavior, which is reported by the combination of enablement and | |
6258 | disposition, so we don't need to mention it here. */ | |
6259 | if (!part_of_multiple && b->enable_count > 1) | |
6260 | { | |
6261 | annotate_field (8); | |
112e8700 | 6262 | uiout->text ("\tdisable after "); |
816338b5 SS |
6263 | /* Tweak the wording to clarify that ignore and enable counts |
6264 | are distinct, and have additive effect. */ | |
6265 | if (b->ignore_count) | |
112e8700 | 6266 | uiout->text ("additional "); |
816338b5 | 6267 | else |
112e8700 SM |
6268 | uiout->text ("next "); |
6269 | uiout->field_int ("enable", b->enable_count); | |
6270 | uiout->text (" hits\n"); | |
816338b5 SS |
6271 | } |
6272 | ||
f196051f SS |
6273 | if (!part_of_multiple && is_tracepoint (b)) |
6274 | { | |
6275 | struct tracepoint *tp = (struct tracepoint *) b; | |
6276 | ||
6277 | if (tp->traceframe_usage) | |
6278 | { | |
112e8700 SM |
6279 | uiout->text ("\ttrace buffer usage "); |
6280 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6281 | uiout->text (" bytes\n"); | |
f196051f SS |
6282 | } |
6283 | } | |
d3ce09f5 | 6284 | |
d1b0a7bf | 6285 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6286 | if (!part_of_multiple && l) |
c4093a6a JM |
6287 | { |
6288 | annotate_field (9); | |
2e783024 | 6289 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6290 | print_command_lines (uiout, l, 4); |
c4093a6a | 6291 | } |
d24317b4 | 6292 | |
d9b3f62e | 6293 | if (is_tracepoint (b)) |
1042e4c0 | 6294 | { |
d9b3f62e PA |
6295 | struct tracepoint *t = (struct tracepoint *) b; |
6296 | ||
6297 | if (!part_of_multiple && t->pass_count) | |
6298 | { | |
6299 | annotate_field (10); | |
112e8700 SM |
6300 | uiout->text ("\tpass count "); |
6301 | uiout->field_int ("pass", t->pass_count); | |
6302 | uiout->text (" \n"); | |
d9b3f62e | 6303 | } |
f2a8bc8a YQ |
6304 | |
6305 | /* Don't display it when tracepoint or tracepoint location is | |
6306 | pending. */ | |
6307 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6308 | { | |
6309 | annotate_field (11); | |
6310 | ||
112e8700 SM |
6311 | if (uiout->is_mi_like_p ()) |
6312 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6313 | loc->inserted ? "y" : "n"); |
6314 | else | |
6315 | { | |
6316 | if (loc->inserted) | |
112e8700 | 6317 | uiout->text ("\t"); |
f2a8bc8a | 6318 | else |
112e8700 SM |
6319 | uiout->text ("\tnot "); |
6320 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6321 | } |
6322 | } | |
1042e4c0 SS |
6323 | } |
6324 | ||
112e8700 | 6325 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6326 | { |
3a5c3e22 PA |
6327 | if (is_watchpoint (b)) |
6328 | { | |
6329 | struct watchpoint *w = (struct watchpoint *) b; | |
6330 | ||
112e8700 | 6331 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6332 | } |
f00aae0f | 6333 | else if (b->location != NULL |
d28cd78a | 6334 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6335 | uiout->field_string ("original-location", |
d28cd78a | 6336 | event_location_to_string (b->location.get ())); |
d24317b4 | 6337 | } |
c4093a6a | 6338 | } |
c5aa993b | 6339 | |
13674803 SM |
6340 | /* See breakpoint.h. */ |
6341 | ||
6342 | bool fix_multi_location_breakpoint_output_globally = false; | |
6343 | ||
0d381245 VP |
6344 | static void |
6345 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6346 | struct bp_location **last_loc, |
6c95b8df | 6347 | int allflag) |
0d381245 | 6348 | { |
79a45e25 | 6349 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6350 | bool use_fixed_output |
6351 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6352 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6353 | |
b4be1b06 SM |
6354 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
6355 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); | |
8d3788bd | 6356 | |
b4be1b06 SM |
6357 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6358 | are outside. */ | |
6359 | if (!use_fixed_output) | |
6360 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6361 | |
6362 | /* If this breakpoint has custom print function, | |
6363 | it's already printed. Otherwise, print individual | |
6364 | locations, if any. */ | |
6365 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6366 | { | |
4a64f543 MS |
6367 | /* If breakpoint has a single location that is disabled, we |
6368 | print it as if it had several locations, since otherwise it's | |
6369 | hard to represent "breakpoint enabled, location disabled" | |
6370 | situation. | |
6371 | ||
6372 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6373 | internally, that's not a property exposed to user. */ |
0d381245 | 6374 | if (b->loc |
a5606eee | 6375 | && !is_hardware_watchpoint (b) |
8d3788bd | 6376 | && (b->loc->next || !b->loc->enabled)) |
0d381245 | 6377 | { |
b4be1b06 SM |
6378 | gdb::optional<ui_out_emit_list> locations_list; |
6379 | ||
6380 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6381 | MI record. For later versions, place breakpoint locations in a | |
6382 | list. */ | |
6383 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6384 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6385 | |
b4be1b06 SM |
6386 | int n = 1; |
6387 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6388 | { |
b4be1b06 | 6389 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
8d3788bd | 6390 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6391 | } |
0d381245 VP |
6392 | } |
6393 | } | |
6394 | } | |
6395 | ||
a6d9a66e UW |
6396 | static int |
6397 | breakpoint_address_bits (struct breakpoint *b) | |
6398 | { | |
6399 | int print_address_bits = 0; | |
6400 | struct bp_location *loc; | |
6401 | ||
c6d81124 PA |
6402 | /* Software watchpoints that aren't watching memory don't have an |
6403 | address to print. */ | |
6404 | if (is_no_memory_software_watchpoint (b)) | |
6405 | return 0; | |
6406 | ||
a6d9a66e UW |
6407 | for (loc = b->loc; loc; loc = loc->next) |
6408 | { | |
c7437ca6 PA |
6409 | int addr_bit; |
6410 | ||
c7437ca6 | 6411 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6412 | if (addr_bit > print_address_bits) |
6413 | print_address_bits = addr_bit; | |
6414 | } | |
6415 | ||
6416 | return print_address_bits; | |
6417 | } | |
0d381245 | 6418 | |
65630365 | 6419 | /* See breakpoint.h. */ |
c5aa993b | 6420 | |
65630365 PA |
6421 | void |
6422 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6423 | { |
a6d9a66e | 6424 | struct bp_location *dummy_loc = NULL; |
65630365 | 6425 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6426 | } |
c5aa993b | 6427 | |
09d682a4 TT |
6428 | /* Return true if this breakpoint was set by the user, false if it is |
6429 | internal or momentary. */ | |
6430 | ||
6431 | int | |
6432 | user_breakpoint_p (struct breakpoint *b) | |
6433 | { | |
46c6471b | 6434 | return b->number > 0; |
09d682a4 TT |
6435 | } |
6436 | ||
93daf339 TT |
6437 | /* See breakpoint.h. */ |
6438 | ||
6439 | int | |
6440 | pending_breakpoint_p (struct breakpoint *b) | |
6441 | { | |
6442 | return b->loc == NULL; | |
6443 | } | |
6444 | ||
7f3b0473 | 6445 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6446 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6447 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6448 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6449 | ones for which it returns non-zero. Return the total number of | |
6450 | breakpoints listed. */ | |
c906108c | 6451 | |
d77f58be | 6452 | static int |
4495129a | 6453 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6454 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6455 | { |
52f0bd74 | 6456 | struct breakpoint *b; |
a6d9a66e | 6457 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6458 | int nr_printable_breakpoints; |
79a45b7d | 6459 | struct value_print_options opts; |
a6d9a66e | 6460 | int print_address_bits = 0; |
269b11a2 | 6461 | int print_type_col_width = 14; |
79a45e25 | 6462 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6463 | |
79a45b7d TT |
6464 | get_user_print_options (&opts); |
6465 | ||
4a64f543 MS |
6466 | /* Compute the number of rows in the table, as well as the size |
6467 | required for address fields. */ | |
7f3b0473 AC |
6468 | nr_printable_breakpoints = 0; |
6469 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6470 | { |
6471 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6472 | if (filter && !filter (b)) | |
6473 | continue; | |
6474 | ||
6475 | /* If we have an "args" string, it is a list of breakpoints to | |
6476 | accept. Skip the others. */ | |
6477 | if (args != NULL && *args != '\0') | |
6478 | { | |
6479 | if (allflag && parse_and_eval_long (args) != b->number) | |
6480 | continue; | |
6481 | if (!allflag && !number_is_in_list (args, b->number)) | |
6482 | continue; | |
6483 | } | |
269b11a2 | 6484 | |
e5a67952 MS |
6485 | if (allflag || user_breakpoint_p (b)) |
6486 | { | |
6487 | int addr_bit, type_len; | |
a6d9a66e | 6488 | |
e5a67952 MS |
6489 | addr_bit = breakpoint_address_bits (b); |
6490 | if (addr_bit > print_address_bits) | |
6491 | print_address_bits = addr_bit; | |
269b11a2 | 6492 | |
e5a67952 MS |
6493 | type_len = strlen (bptype_string (b->type)); |
6494 | if (type_len > print_type_col_width) | |
6495 | print_type_col_width = type_len; | |
6496 | ||
6497 | nr_printable_breakpoints++; | |
6498 | } | |
6499 | } | |
7f3b0473 | 6500 | |
4a2b031d TT |
6501 | { |
6502 | ui_out_emit_table table_emitter (uiout, | |
6503 | opts.addressprint ? 6 : 5, | |
6504 | nr_printable_breakpoints, | |
6505 | "BreakpointTable"); | |
6506 | ||
6507 | if (nr_printable_breakpoints > 0) | |
6508 | annotate_breakpoints_headers (); | |
6509 | if (nr_printable_breakpoints > 0) | |
6510 | annotate_field (0); | |
6511 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6512 | if (nr_printable_breakpoints > 0) | |
6513 | annotate_field (1); | |
6514 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6515 | if (nr_printable_breakpoints > 0) | |
6516 | annotate_field (2); | |
6517 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6518 | if (nr_printable_breakpoints > 0) | |
6519 | annotate_field (3); | |
6520 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6521 | if (opts.addressprint) | |
6522 | { | |
6523 | if (nr_printable_breakpoints > 0) | |
6524 | annotate_field (4); | |
6525 | if (print_address_bits <= 32) | |
6526 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6527 | else | |
6528 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6529 | } | |
6530 | if (nr_printable_breakpoints > 0) | |
6531 | annotate_field (5); | |
6532 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6533 | uiout->table_body (); | |
6534 | if (nr_printable_breakpoints > 0) | |
6535 | annotate_breakpoints_table (); | |
6536 | ||
6537 | ALL_BREAKPOINTS (b) | |
6538 | { | |
6539 | QUIT; | |
6540 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6541 | if (filter && !filter (b)) | |
6542 | continue; | |
e5a67952 | 6543 | |
4a2b031d TT |
6544 | /* If we have an "args" string, it is a list of breakpoints to |
6545 | accept. Skip the others. */ | |
e5a67952 | 6546 | |
4a2b031d TT |
6547 | if (args != NULL && *args != '\0') |
6548 | { | |
6549 | if (allflag) /* maintenance info breakpoint */ | |
6550 | { | |
6551 | if (parse_and_eval_long (args) != b->number) | |
6552 | continue; | |
6553 | } | |
6554 | else /* all others */ | |
6555 | { | |
6556 | if (!number_is_in_list (args, b->number)) | |
6557 | continue; | |
6558 | } | |
6559 | } | |
6560 | /* We only print out user settable breakpoints unless the | |
6561 | allflag is set. */ | |
6562 | if (allflag || user_breakpoint_p (b)) | |
6563 | print_one_breakpoint (b, &last_loc, allflag); | |
6564 | } | |
6565 | } | |
698384cd | 6566 | |
7f3b0473 | 6567 | if (nr_printable_breakpoints == 0) |
c906108c | 6568 | { |
4a64f543 MS |
6569 | /* If there's a filter, let the caller decide how to report |
6570 | empty list. */ | |
d77f58be SS |
6571 | if (!filter) |
6572 | { | |
e5a67952 | 6573 | if (args == NULL || *args == '\0') |
112e8700 | 6574 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6575 | else |
112e8700 | 6576 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6577 | args); |
d77f58be | 6578 | } |
c906108c SS |
6579 | } |
6580 | else | |
c4093a6a | 6581 | { |
a6d9a66e UW |
6582 | if (last_loc && !server_command) |
6583 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6584 | } |
c906108c | 6585 | |
4a64f543 | 6586 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6587 | there have been breakpoints? */ |
c906108c | 6588 | annotate_breakpoints_table_end (); |
d77f58be SS |
6589 | |
6590 | return nr_printable_breakpoints; | |
c906108c SS |
6591 | } |
6592 | ||
ad443146 SS |
6593 | /* Display the value of default-collect in a way that is generally |
6594 | compatible with the breakpoint list. */ | |
6595 | ||
6596 | static void | |
6597 | default_collect_info (void) | |
6598 | { | |
79a45e25 PA |
6599 | struct ui_out *uiout = current_uiout; |
6600 | ||
ad443146 SS |
6601 | /* If it has no value (which is frequently the case), say nothing; a |
6602 | message like "No default-collect." gets in user's face when it's | |
6603 | not wanted. */ | |
6604 | if (!*default_collect) | |
6605 | return; | |
6606 | ||
6607 | /* The following phrase lines up nicely with per-tracepoint collect | |
6608 | actions. */ | |
112e8700 SM |
6609 | uiout->text ("default collect "); |
6610 | uiout->field_string ("default-collect", default_collect); | |
6611 | uiout->text (" \n"); | |
ad443146 SS |
6612 | } |
6613 | ||
c906108c | 6614 | static void |
0b39b52e | 6615 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6616 | { |
e5a67952 | 6617 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6618 | |
6619 | default_collect_info (); | |
d77f58be SS |
6620 | } |
6621 | ||
6622 | static void | |
1d12d88f | 6623 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6624 | { |
e5a67952 | 6625 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6626 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6627 | |
6628 | if (num_printed == 0) | |
6629 | { | |
e5a67952 | 6630 | if (args == NULL || *args == '\0') |
112e8700 | 6631 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6632 | else |
112e8700 | 6633 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6634 | } |
c906108c SS |
6635 | } |
6636 | ||
7a292a7a | 6637 | static void |
4495129a | 6638 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6639 | { |
e5a67952 | 6640 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6641 | |
6642 | default_collect_info (); | |
c906108c SS |
6643 | } |
6644 | ||
0d381245 | 6645 | static int |
714835d5 | 6646 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6647 | struct program_space *pspace, |
714835d5 | 6648 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6649 | { |
6650 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6651 | |
0d381245 VP |
6652 | for (; bl; bl = bl->next) |
6653 | { | |
6c95b8df PA |
6654 | if (bl->pspace == pspace |
6655 | && bl->address == pc | |
0d381245 VP |
6656 | && (!overlay_debugging || bl->section == section)) |
6657 | return 1; | |
6658 | } | |
6659 | return 0; | |
6660 | } | |
6661 | ||
672f9b60 | 6662 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6663 | concerns with logical breakpoints, so we match program spaces, not |
6664 | address spaces. */ | |
c906108c SS |
6665 | |
6666 | static void | |
6c95b8df PA |
6667 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6668 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6669 | struct obj_section *section, int thread) |
c906108c | 6670 | { |
52f0bd74 AC |
6671 | int others = 0; |
6672 | struct breakpoint *b; | |
c906108c SS |
6673 | |
6674 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6675 | others += (user_breakpoint_p (b) |
6676 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6677 | if (others > 0) |
6678 | { | |
a3f17187 AC |
6679 | if (others == 1) |
6680 | printf_filtered (_("Note: breakpoint ")); | |
6681 | else /* if (others == ???) */ | |
6682 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6683 | ALL_BREAKPOINTS (b) |
672f9b60 | 6684 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6685 | { |
6686 | others--; | |
6687 | printf_filtered ("%d", b->number); | |
6688 | if (b->thread == -1 && thread != -1) | |
6689 | printf_filtered (" (all threads)"); | |
6690 | else if (b->thread != -1) | |
6691 | printf_filtered (" (thread %d)", b->thread); | |
6692 | printf_filtered ("%s%s ", | |
059fb39f | 6693 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6694 | || b->enable_state == bp_call_disabled) |
0d381245 | 6695 | ? " (disabled)" |
0d381245 VP |
6696 | : ""), |
6697 | (others > 1) ? "," | |
6698 | : ((others == 1) ? " and" : "")); | |
6699 | } | |
a3f17187 | 6700 | printf_filtered (_("also set at pc ")); |
2636d81d | 6701 | fputs_styled (paddress (gdbarch, pc), address_style.style (), gdb_stdout); |
c906108c SS |
6702 | printf_filtered (".\n"); |
6703 | } | |
6704 | } | |
6705 | \f | |
c906108c | 6706 | |
e4f237da | 6707 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6708 | BPT locations. For some breakpoint types, the locations' address members |
6709 | are irrelevant and it makes no sense to attempt to compare them to other | |
6710 | addresses (or use them for any other purpose either). | |
e4f237da | 6711 | |
4a64f543 | 6712 | More specifically, each of the following breakpoint types will |
244558af | 6713 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6714 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6715 | breakpoint location at address zero: |
e4f237da KB |
6716 | |
6717 | bp_watchpoint | |
2d134ed3 PA |
6718 | bp_catchpoint |
6719 | ||
6720 | */ | |
e4f237da KB |
6721 | |
6722 | static int | |
6723 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6724 | { | |
6725 | enum bptype type = bpt->type; | |
6726 | ||
2d134ed3 PA |
6727 | return (type != bp_watchpoint && type != bp_catchpoint); |
6728 | } | |
6729 | ||
6730 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6731 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6732 | ||
6733 | static int | |
4a64f543 MS |
6734 | watchpoint_locations_match (struct bp_location *loc1, |
6735 | struct bp_location *loc2) | |
2d134ed3 | 6736 | { |
3a5c3e22 PA |
6737 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6738 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6739 | ||
6740 | /* Both of them must exist. */ | |
6741 | gdb_assert (w1 != NULL); | |
6742 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6743 | |
4a64f543 MS |
6744 | /* If the target can evaluate the condition expression in hardware, |
6745 | then we we need to insert both watchpoints even if they are at | |
6746 | the same place. Otherwise the watchpoint will only trigger when | |
6747 | the condition of whichever watchpoint was inserted evaluates to | |
6748 | true, not giving a chance for GDB to check the condition of the | |
6749 | other watchpoint. */ | |
3a5c3e22 | 6750 | if ((w1->cond_exp |
4a64f543 MS |
6751 | && target_can_accel_watchpoint_condition (loc1->address, |
6752 | loc1->length, | |
0cf6dd15 | 6753 | loc1->watchpoint_type, |
4d01a485 | 6754 | w1->cond_exp.get ())) |
3a5c3e22 | 6755 | || (w2->cond_exp |
4a64f543 MS |
6756 | && target_can_accel_watchpoint_condition (loc2->address, |
6757 | loc2->length, | |
0cf6dd15 | 6758 | loc2->watchpoint_type, |
4d01a485 | 6759 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6760 | return 0; |
6761 | ||
85d721b8 PA |
6762 | /* Note that this checks the owner's type, not the location's. In |
6763 | case the target does not support read watchpoints, but does | |
6764 | support access watchpoints, we'll have bp_read_watchpoint | |
6765 | watchpoints with hw_access locations. Those should be considered | |
6766 | duplicates of hw_read locations. The hw_read locations will | |
6767 | become hw_access locations later. */ | |
2d134ed3 PA |
6768 | return (loc1->owner->type == loc2->owner->type |
6769 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6770 | && loc1->address == loc2->address | |
6771 | && loc1->length == loc2->length); | |
e4f237da KB |
6772 | } |
6773 | ||
31e77af2 | 6774 | /* See breakpoint.h. */ |
6c95b8df | 6775 | |
31e77af2 | 6776 | int |
accd0bcd YQ |
6777 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6778 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6779 | { |
f5656ead | 6780 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6781 | || aspace1 == aspace2) |
6782 | && addr1 == addr2); | |
6783 | } | |
6784 | ||
f1310107 TJB |
6785 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6786 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6787 | matches ASPACE2. On targets that have global breakpoints, the address | |
6788 | space doesn't really matter. */ | |
6789 | ||
6790 | static int | |
accd0bcd YQ |
6791 | breakpoint_address_match_range (const address_space *aspace1, |
6792 | CORE_ADDR addr1, | |
6793 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6794 | CORE_ADDR addr2) |
6795 | { | |
f5656ead | 6796 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6797 | || aspace1 == aspace2) |
6798 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6799 | } | |
6800 | ||
6801 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6802 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6803 | matches the breakpoint's address space. On targets that have global | |
6804 | breakpoints, the address space doesn't really matter. */ | |
6805 | ||
6806 | static int | |
6807 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6808 | const address_space *aspace, |
f1310107 TJB |
6809 | CORE_ADDR addr) |
6810 | { | |
6811 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6812 | aspace, addr) | |
6813 | || (bl->length | |
6814 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6815 | bl->address, bl->length, | |
6816 | aspace, addr))); | |
6817 | } | |
6818 | ||
d35ae833 PA |
6819 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6820 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6821 | match happens only if ASPACE matches the breakpoint's address | |
6822 | space. On targets that have global breakpoints, the address space | |
6823 | doesn't really matter. */ | |
6824 | ||
6825 | static int | |
6826 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6827 | const address_space *aspace, |
d35ae833 PA |
6828 | CORE_ADDR addr, int len) |
6829 | { | |
6830 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6831 | || bl->pspace->aspace == aspace) | |
6832 | { | |
6833 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6834 | ||
6835 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6836 | return 1; | |
6837 | } | |
6838 | return 0; | |
6839 | } | |
6840 | ||
1e4d1764 YQ |
6841 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6842 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6843 | true, otherwise returns false. */ | |
6844 | ||
6845 | static int | |
6846 | tracepoint_locations_match (struct bp_location *loc1, | |
6847 | struct bp_location *loc2) | |
6848 | { | |
6849 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6850 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6851 | locations at the same address of different tracepoints are regarded as | |
6852 | different locations. */ | |
6853 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6854 | else | |
6855 | return 0; | |
6856 | } | |
6857 | ||
2d134ed3 PA |
6858 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6859 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6860 | represent the same location. */ | |
6861 | ||
6862 | static int | |
4a64f543 MS |
6863 | breakpoint_locations_match (struct bp_location *loc1, |
6864 | struct bp_location *loc2) | |
2d134ed3 | 6865 | { |
2bdf28a0 JK |
6866 | int hw_point1, hw_point2; |
6867 | ||
6868 | /* Both of them must not be in moribund_locations. */ | |
6869 | gdb_assert (loc1->owner != NULL); | |
6870 | gdb_assert (loc2->owner != NULL); | |
6871 | ||
6872 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6873 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6874 | |
6875 | if (hw_point1 != hw_point2) | |
6876 | return 0; | |
6877 | else if (hw_point1) | |
6878 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6879 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6880 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6881 | else |
f1310107 TJB |
6882 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6883 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6884 | loc2->pspace->aspace, loc2->address) | |
6885 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6886 | } |
6887 | ||
76897487 KB |
6888 | static void |
6889 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6890 | int bnum, int have_bnum) | |
6891 | { | |
f63fbe86 MS |
6892 | /* The longest string possibly returned by hex_string_custom |
6893 | is 50 chars. These must be at least that big for safety. */ | |
6894 | char astr1[64]; | |
6895 | char astr2[64]; | |
76897487 | 6896 | |
bb599908 PH |
6897 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6898 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6899 | if (have_bnum) |
8a3fe4f8 | 6900 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6901 | bnum, astr1, astr2); |
6902 | else | |
8a3fe4f8 | 6903 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6904 | } |
6905 | ||
4a64f543 MS |
6906 | /* Adjust a breakpoint's address to account for architectural |
6907 | constraints on breakpoint placement. Return the adjusted address. | |
6908 | Note: Very few targets require this kind of adjustment. For most | |
6909 | targets, this function is simply the identity function. */ | |
76897487 KB |
6910 | |
6911 | static CORE_ADDR | |
a6d9a66e UW |
6912 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6913 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6914 | { |
a0de8c21 YQ |
6915 | if (bptype == bp_watchpoint |
6916 | || bptype == bp_hardware_watchpoint | |
6917 | || bptype == bp_read_watchpoint | |
6918 | || bptype == bp_access_watchpoint | |
6919 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6920 | { |
6921 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6922 | have their addresses modified. */ | |
6923 | return bpaddr; | |
6924 | } | |
7c16b83e PA |
6925 | else if (bptype == bp_single_step) |
6926 | { | |
6927 | /* Single-step breakpoints should not have their addresses | |
6928 | modified. If there's any architectural constrain that | |
6929 | applies to this address, then it should have already been | |
6930 | taken into account when the breakpoint was created in the | |
6931 | first place. If we didn't do this, stepping through e.g., | |
6932 | Thumb-2 IT blocks would break. */ | |
6933 | return bpaddr; | |
6934 | } | |
76897487 KB |
6935 | else |
6936 | { | |
a0de8c21 YQ |
6937 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6938 | ||
6939 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6940 | { | |
6941 | /* Some targets have architectural constraints on the placement | |
6942 | of breakpoint instructions. Obtain the adjusted address. */ | |
6943 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6944 | } | |
76897487 | 6945 | |
a0de8c21 | 6946 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6947 | |
6948 | /* An adjusted breakpoint address can significantly alter | |
6949 | a user's expectations. Print a warning if an adjustment | |
6950 | is required. */ | |
6951 | if (adjusted_bpaddr != bpaddr) | |
6952 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6953 | ||
6954 | return adjusted_bpaddr; | |
6955 | } | |
6956 | } | |
6957 | ||
5f486660 | 6958 | bp_location::bp_location (breakpoint *owner) |
7cc221ef | 6959 | { |
5625a286 | 6960 | bp_location *loc = this; |
7cc221ef | 6961 | |
28010a5d | 6962 | loc->owner = owner; |
b775012e | 6963 | loc->cond_bytecode = NULL; |
0d381245 VP |
6964 | loc->shlib_disabled = 0; |
6965 | loc->enabled = 1; | |
e049a4b5 | 6966 | |
28010a5d | 6967 | switch (owner->type) |
e049a4b5 DJ |
6968 | { |
6969 | case bp_breakpoint: | |
7c16b83e | 6970 | case bp_single_step: |
e049a4b5 DJ |
6971 | case bp_until: |
6972 | case bp_finish: | |
6973 | case bp_longjmp: | |
6974 | case bp_longjmp_resume: | |
e2e4d78b | 6975 | case bp_longjmp_call_dummy: |
186c406b TT |
6976 | case bp_exception: |
6977 | case bp_exception_resume: | |
e049a4b5 | 6978 | case bp_step_resume: |
2c03e5be | 6979 | case bp_hp_step_resume: |
e049a4b5 DJ |
6980 | case bp_watchpoint_scope: |
6981 | case bp_call_dummy: | |
aa7d318d | 6982 | case bp_std_terminate: |
e049a4b5 DJ |
6983 | case bp_shlib_event: |
6984 | case bp_thread_event: | |
6985 | case bp_overlay_event: | |
4efc6507 | 6986 | case bp_jit_event: |
0fd8e87f | 6987 | case bp_longjmp_master: |
aa7d318d | 6988 | case bp_std_terminate_master: |
186c406b | 6989 | case bp_exception_master: |
0e30163f JK |
6990 | case bp_gnu_ifunc_resolver: |
6991 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6992 | case bp_dprintf: |
e049a4b5 | 6993 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6994 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6995 | break; |
6996 | case bp_hardware_breakpoint: | |
6997 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6998 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6999 | break; |
7000 | case bp_hardware_watchpoint: | |
7001 | case bp_read_watchpoint: | |
7002 | case bp_access_watchpoint: | |
7003 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7004 | break; | |
7005 | case bp_watchpoint: | |
ce78b96d | 7006 | case bp_catchpoint: |
15c3d785 PA |
7007 | case bp_tracepoint: |
7008 | case bp_fast_tracepoint: | |
0fb4aa4b | 7009 | case bp_static_tracepoint: |
e049a4b5 DJ |
7010 | loc->loc_type = bp_loc_other; |
7011 | break; | |
7012 | default: | |
e2e0b3e5 | 7013 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7014 | } |
7015 | ||
f431efe5 | 7016 | loc->refc = 1; |
28010a5d PA |
7017 | } |
7018 | ||
7019 | /* Allocate a struct bp_location. */ | |
7020 | ||
7021 | static struct bp_location * | |
7022 | allocate_bp_location (struct breakpoint *bpt) | |
7023 | { | |
348d480f PA |
7024 | return bpt->ops->allocate_location (bpt); |
7025 | } | |
7cc221ef | 7026 | |
f431efe5 PA |
7027 | static void |
7028 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7029 | { |
4d01a485 | 7030 | delete loc; |
fe3f5fa8 VP |
7031 | } |
7032 | ||
f431efe5 PA |
7033 | /* Increment reference count. */ |
7034 | ||
7035 | static void | |
7036 | incref_bp_location (struct bp_location *bl) | |
7037 | { | |
7038 | ++bl->refc; | |
7039 | } | |
7040 | ||
7041 | /* Decrement reference count. If the reference count reaches 0, | |
7042 | destroy the bp_location. Sets *BLP to NULL. */ | |
7043 | ||
7044 | static void | |
7045 | decref_bp_location (struct bp_location **blp) | |
7046 | { | |
0807b50c PA |
7047 | gdb_assert ((*blp)->refc > 0); |
7048 | ||
f431efe5 PA |
7049 | if (--(*blp)->refc == 0) |
7050 | free_bp_location (*blp); | |
7051 | *blp = NULL; | |
7052 | } | |
7053 | ||
346774a9 | 7054 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7055 | |
b270e6f9 TT |
7056 | static breakpoint * |
7057 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7058 | { |
346774a9 | 7059 | struct breakpoint *b1; |
b270e6f9 | 7060 | struct breakpoint *result = b.get (); |
c906108c | 7061 | |
346774a9 PA |
7062 | /* Add this breakpoint to the end of the chain so that a list of |
7063 | breakpoints will come out in order of increasing numbers. */ | |
7064 | ||
7065 | b1 = breakpoint_chain; | |
7066 | if (b1 == 0) | |
b270e6f9 | 7067 | breakpoint_chain = b.release (); |
346774a9 PA |
7068 | else |
7069 | { | |
7070 | while (b1->next) | |
7071 | b1 = b1->next; | |
b270e6f9 | 7072 | b1->next = b.release (); |
346774a9 | 7073 | } |
b270e6f9 TT |
7074 | |
7075 | return result; | |
346774a9 PA |
7076 | } |
7077 | ||
7078 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7079 | ||
7080 | static void | |
7081 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7082 | struct gdbarch *gdbarch, | |
28010a5d | 7083 | enum bptype bptype, |
c0a91b2b | 7084 | const struct breakpoint_ops *ops) |
346774a9 | 7085 | { |
348d480f PA |
7086 | gdb_assert (ops != NULL); |
7087 | ||
28010a5d | 7088 | b->ops = ops; |
4d28f7a8 | 7089 | b->type = bptype; |
a6d9a66e | 7090 | b->gdbarch = gdbarch; |
c906108c SS |
7091 | b->language = current_language->la_language; |
7092 | b->input_radix = input_radix; | |
d0fb5eae | 7093 | b->related_breakpoint = b; |
346774a9 PA |
7094 | } |
7095 | ||
7096 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7097 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7098 | |
7099 | static struct breakpoint * | |
7100 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7101 | enum bptype bptype, |
c0a91b2b | 7102 | const struct breakpoint_ops *ops) |
346774a9 | 7103 | { |
3b0871f4 | 7104 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7105 | |
3b0871f4 | 7106 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7107 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7108 | } |
7109 | ||
0e30163f JK |
7110 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7111 | resolutions should be made as the user specified the location explicitly | |
7112 | enough. */ | |
7113 | ||
0d381245 | 7114 | static void |
0e30163f | 7115 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7116 | { |
2bdf28a0 JK |
7117 | gdb_assert (loc->owner != NULL); |
7118 | ||
0d381245 | 7119 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7120 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7121 | || is_tracepoint (loc->owner)) |
0d381245 | 7122 | { |
2c02bd72 | 7123 | const char *function_name; |
0e30163f | 7124 | |
3467ec66 | 7125 | if (loc->msymbol != NULL |
f50776aa PA |
7126 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
7127 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc) | |
3467ec66 | 7128 | && !explicit_loc) |
0e30163f JK |
7129 | { |
7130 | struct breakpoint *b = loc->owner; | |
7131 | ||
3467ec66 PA |
7132 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7133 | ||
7134 | if (b->type == bp_breakpoint && b->loc == loc | |
7135 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7136 | { |
7137 | /* Create only the whole new breakpoint of this type but do not | |
7138 | mess more complicated breakpoints with multiple locations. */ | |
7139 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7140 | /* Remember the resolver's address for use by the return |
7141 | breakpoint. */ | |
3467ec66 | 7142 | loc->related_address = loc->address; |
0e30163f JK |
7143 | } |
7144 | } | |
3467ec66 PA |
7145 | else |
7146 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7147 | |
2c02bd72 DE |
7148 | if (function_name) |
7149 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7150 | } |
7151 | } | |
7152 | ||
a6d9a66e | 7153 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7154 | struct gdbarch * |
a6d9a66e UW |
7155 | get_sal_arch (struct symtab_and_line sal) |
7156 | { | |
7157 | if (sal.section) | |
7158 | return get_objfile_arch (sal.section->objfile); | |
7159 | if (sal.symtab) | |
eb822aa6 | 7160 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7161 | |
7162 | return NULL; | |
7163 | } | |
7164 | ||
346774a9 PA |
7165 | /* Low level routine for partially initializing a breakpoint of type |
7166 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7167 | file name, and line number are provided by SAL. |
0d381245 VP |
7168 | |
7169 | It is expected that the caller will complete the initialization of | |
7170 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7171 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7172 | |
346774a9 PA |
7173 | static void |
7174 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7175 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7176 | const struct breakpoint_ops *ops) |
0d381245 | 7177 | { |
28010a5d | 7178 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7179 | |
3742cc8b | 7180 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7181 | |
6c95b8df PA |
7182 | if (bptype != bp_catchpoint) |
7183 | gdb_assert (sal.pspace != NULL); | |
7184 | ||
f8eba3c6 TT |
7185 | /* Store the program space that was used to set the breakpoint, |
7186 | except for ordinary breakpoints, which are independent of the | |
7187 | program space. */ | |
7188 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7189 | b->pspace = sal.pspace; | |
346774a9 | 7190 | } |
c906108c | 7191 | |
346774a9 PA |
7192 | /* set_raw_breakpoint is a low level routine for allocating and |
7193 | partially initializing a breakpoint of type BPTYPE. The newly | |
7194 | created breakpoint's address, section, source file name, and line | |
7195 | number are provided by SAL. The newly created and partially | |
7196 | initialized breakpoint is added to the breakpoint chain and | |
7197 | is also returned as the value of this function. | |
7198 | ||
7199 | It is expected that the caller will complete the initialization of | |
7200 | the newly created breakpoint struct as well as output any status | |
7201 | information regarding the creation of a new breakpoint. In | |
7202 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7203 | number! Care should be taken to not allow an error to occur | |
7204 | prior to completing the initialization of the breakpoint. If this | |
7205 | should happen, a bogus breakpoint will be left on the chain. */ | |
7206 | ||
7207 | struct breakpoint * | |
7208 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7209 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7210 | const struct breakpoint_ops *ops) |
346774a9 | 7211 | { |
3b0871f4 | 7212 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7213 | |
3b0871f4 | 7214 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7215 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7216 | } |
7217 | ||
53a5351d | 7218 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7219 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7220 | initiated the operation. */ | |
c906108c SS |
7221 | |
7222 | void | |
186c406b | 7223 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7224 | { |
35df4500 | 7225 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7226 | int thread = tp->global_num; |
0fd8e87f UW |
7227 | |
7228 | /* To avoid having to rescan all objfile symbols at every step, | |
7229 | we maintain a list of continually-inserted but always disabled | |
7230 | longjmp "master" breakpoints. Here, we simply create momentary | |
7231 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7232 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7233 | if (b->pspace == current_program_space |
186c406b TT |
7234 | && (b->type == bp_longjmp_master |
7235 | || b->type == bp_exception_master)) | |
0fd8e87f | 7236 | { |
06edf0c0 PA |
7237 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7238 | struct breakpoint *clone; | |
cc59ec59 | 7239 | |
e2e4d78b JK |
7240 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7241 | after their removal. */ | |
06edf0c0 | 7242 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7243 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7244 | clone->thread = thread; |
7245 | } | |
186c406b TT |
7246 | |
7247 | tp->initiating_frame = frame; | |
c906108c SS |
7248 | } |
7249 | ||
611c83ae | 7250 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7251 | void |
611c83ae | 7252 | delete_longjmp_breakpoint (int thread) |
c906108c | 7253 | { |
35df4500 | 7254 | struct breakpoint *b, *b_tmp; |
c906108c | 7255 | |
35df4500 | 7256 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7257 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7258 | { |
7259 | if (b->thread == thread) | |
7260 | delete_breakpoint (b); | |
7261 | } | |
c906108c SS |
7262 | } |
7263 | ||
f59f708a PA |
7264 | void |
7265 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7266 | { | |
7267 | struct breakpoint *b, *b_tmp; | |
7268 | ||
7269 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7270 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7271 | { | |
7272 | if (b->thread == thread) | |
7273 | b->disposition = disp_del_at_next_stop; | |
7274 | } | |
7275 | } | |
7276 | ||
e2e4d78b JK |
7277 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7278 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7279 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7280 | breakpoints. */ | |
7281 | ||
7282 | struct breakpoint * | |
7283 | set_longjmp_breakpoint_for_call_dummy (void) | |
7284 | { | |
7285 | struct breakpoint *b, *retval = NULL; | |
7286 | ||
7287 | ALL_BREAKPOINTS (b) | |
7288 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7289 | { | |
7290 | struct breakpoint *new_b; | |
7291 | ||
7292 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7293 | &momentary_breakpoint_ops, |
7294 | 1); | |
00431a78 | 7295 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7296 | |
7297 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7298 | ||
7299 | gdb_assert (new_b->related_breakpoint == new_b); | |
7300 | if (retval == NULL) | |
7301 | retval = new_b; | |
7302 | new_b->related_breakpoint = retval; | |
7303 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7304 | retval = retval->related_breakpoint; | |
7305 | retval->related_breakpoint = new_b; | |
7306 | } | |
7307 | ||
7308 | return retval; | |
7309 | } | |
7310 | ||
7311 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7312 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7313 | stack. |
7314 | ||
7315 | You should call this function only at places where it is safe to currently | |
7316 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7317 | frames. */ | |
7318 | ||
7319 | void | |
b67a2c6f | 7320 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7321 | { |
7322 | struct breakpoint *b, *b_tmp; | |
7323 | ||
7324 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7325 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7326 | { |
7327 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7328 | ||
7329 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7330 | dummy_b = dummy_b->related_breakpoint; | |
7331 | if (dummy_b->type != bp_call_dummy | |
7332 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7333 | continue; | |
7334 | ||
00431a78 | 7335 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7336 | |
7337 | while (b->related_breakpoint != b) | |
7338 | { | |
7339 | if (b_tmp == b->related_breakpoint) | |
7340 | b_tmp = b->related_breakpoint->next; | |
7341 | delete_breakpoint (b->related_breakpoint); | |
7342 | } | |
7343 | delete_breakpoint (b); | |
7344 | } | |
7345 | } | |
7346 | ||
1900040c MS |
7347 | void |
7348 | enable_overlay_breakpoints (void) | |
7349 | { | |
52f0bd74 | 7350 | struct breakpoint *b; |
1900040c MS |
7351 | |
7352 | ALL_BREAKPOINTS (b) | |
7353 | if (b->type == bp_overlay_event) | |
7354 | { | |
7355 | b->enable_state = bp_enabled; | |
44702360 | 7356 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7357 | overlay_events_enabled = 1; |
1900040c MS |
7358 | } |
7359 | } | |
7360 | ||
7361 | void | |
7362 | disable_overlay_breakpoints (void) | |
7363 | { | |
52f0bd74 | 7364 | struct breakpoint *b; |
1900040c MS |
7365 | |
7366 | ALL_BREAKPOINTS (b) | |
7367 | if (b->type == bp_overlay_event) | |
7368 | { | |
7369 | b->enable_state = bp_disabled; | |
44702360 | 7370 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7371 | overlay_events_enabled = 0; |
1900040c MS |
7372 | } |
7373 | } | |
7374 | ||
aa7d318d TT |
7375 | /* Set an active std::terminate breakpoint for each std::terminate |
7376 | master breakpoint. */ | |
7377 | void | |
7378 | set_std_terminate_breakpoint (void) | |
7379 | { | |
35df4500 | 7380 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7381 | |
35df4500 | 7382 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7383 | if (b->pspace == current_program_space |
7384 | && b->type == bp_std_terminate_master) | |
7385 | { | |
06edf0c0 | 7386 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7387 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7388 | } |
7389 | } | |
7390 | ||
7391 | /* Delete all the std::terminate breakpoints. */ | |
7392 | void | |
7393 | delete_std_terminate_breakpoint (void) | |
7394 | { | |
35df4500 | 7395 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7396 | |
35df4500 | 7397 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7398 | if (b->type == bp_std_terminate) |
7399 | delete_breakpoint (b); | |
7400 | } | |
7401 | ||
c4093a6a | 7402 | struct breakpoint * |
a6d9a66e | 7403 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7404 | { |
7405 | struct breakpoint *b; | |
c4093a6a | 7406 | |
06edf0c0 PA |
7407 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7408 | &internal_breakpoint_ops); | |
7409 | ||
b5de0fa7 | 7410 | b->enable_state = bp_enabled; |
f00aae0f | 7411 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7412 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7413 | |
44702360 | 7414 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7415 | |
c4093a6a JM |
7416 | return b; |
7417 | } | |
7418 | ||
0101ce28 JJ |
7419 | struct lang_and_radix |
7420 | { | |
7421 | enum language lang; | |
7422 | int radix; | |
7423 | }; | |
7424 | ||
4efc6507 DE |
7425 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7426 | ||
7427 | struct breakpoint * | |
7428 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7429 | { | |
2a7f3dff PA |
7430 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7431 | &internal_breakpoint_ops); | |
4efc6507 | 7432 | } |
0101ce28 | 7433 | |
03673fc7 PP |
7434 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7435 | ||
7436 | void | |
7437 | remove_jit_event_breakpoints (void) | |
7438 | { | |
7439 | struct breakpoint *b, *b_tmp; | |
7440 | ||
7441 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7442 | if (b->type == bp_jit_event | |
7443 | && b->loc->pspace == current_program_space) | |
7444 | delete_breakpoint (b); | |
7445 | } | |
7446 | ||
cae688ec JJ |
7447 | void |
7448 | remove_solib_event_breakpoints (void) | |
7449 | { | |
35df4500 | 7450 | struct breakpoint *b, *b_tmp; |
cae688ec | 7451 | |
35df4500 | 7452 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7453 | if (b->type == bp_shlib_event |
7454 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7455 | delete_breakpoint (b); |
7456 | } | |
7457 | ||
f37f681c PA |
7458 | /* See breakpoint.h. */ |
7459 | ||
7460 | void | |
7461 | remove_solib_event_breakpoints_at_next_stop (void) | |
7462 | { | |
7463 | struct breakpoint *b, *b_tmp; | |
7464 | ||
7465 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7466 | if (b->type == bp_shlib_event | |
7467 | && b->loc->pspace == current_program_space) | |
7468 | b->disposition = disp_del_at_next_stop; | |
7469 | } | |
7470 | ||
04086b45 PA |
7471 | /* Helper for create_solib_event_breakpoint / |
7472 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7473 | INSERT_MODE to pass through to update_global_location_list. */ | |
7474 | ||
7475 | static struct breakpoint * | |
7476 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7477 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7478 | { |
7479 | struct breakpoint *b; | |
7480 | ||
06edf0c0 PA |
7481 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7482 | &internal_breakpoint_ops); | |
04086b45 | 7483 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7484 | return b; |
7485 | } | |
7486 | ||
04086b45 PA |
7487 | struct breakpoint * |
7488 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7489 | { | |
7490 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7491 | } | |
7492 | ||
f37f681c PA |
7493 | /* See breakpoint.h. */ |
7494 | ||
7495 | struct breakpoint * | |
7496 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7497 | { | |
7498 | struct breakpoint *b; | |
7499 | ||
04086b45 PA |
7500 | /* Explicitly tell update_global_location_list to insert |
7501 | locations. */ | |
7502 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7503 | if (!b->loc->inserted) |
7504 | { | |
7505 | delete_breakpoint (b); | |
7506 | return NULL; | |
7507 | } | |
7508 | return b; | |
7509 | } | |
7510 | ||
cae688ec JJ |
7511 | /* Disable any breakpoints that are on code in shared libraries. Only |
7512 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7513 | ||
7514 | void | |
cb851954 | 7515 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7516 | { |
876fa593 | 7517 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7518 | |
876fa593 | 7519 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7520 | { |
2bdf28a0 | 7521 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7522 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7523 | |
4a64f543 MS |
7524 | /* We apply the check to all breakpoints, including disabled for |
7525 | those with loc->duplicate set. This is so that when breakpoint | |
7526 | becomes enabled, or the duplicate is removed, gdb will try to | |
7527 | insert all breakpoints. If we don't set shlib_disabled here, | |
7528 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7529 | if (((b->type == bp_breakpoint) |
508ccb1f | 7530 | || (b->type == bp_jit_event) |
1042e4c0 | 7531 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7532 | || (is_tracepoint (b))) |
6c95b8df | 7533 | && loc->pspace == current_program_space |
0d381245 | 7534 | && !loc->shlib_disabled |
6c95b8df | 7535 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7536 | ) |
0d381245 VP |
7537 | { |
7538 | loc->shlib_disabled = 1; | |
7539 | } | |
cae688ec JJ |
7540 | } |
7541 | } | |
7542 | ||
63644780 NB |
7543 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7544 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7545 | disabled ones can just stay disabled. */ | |
84acb35a | 7546 | |
75149521 | 7547 | static void |
84acb35a JJ |
7548 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7549 | { | |
876fa593 | 7550 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7551 | int disabled_shlib_breaks = 0; |
7552 | ||
876fa593 | 7553 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7554 | { |
2bdf28a0 | 7555 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7556 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7557 | |
1e4d1764 | 7558 | if (solib->pspace == loc->pspace |
e2dd7057 | 7559 | && !loc->shlib_disabled |
1e4d1764 YQ |
7560 | && (((b->type == bp_breakpoint |
7561 | || b->type == bp_jit_event | |
7562 | || b->type == bp_hardware_breakpoint) | |
7563 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7564 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7565 | || is_tracepoint (b)) | |
e2dd7057 | 7566 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7567 | { |
e2dd7057 PP |
7568 | loc->shlib_disabled = 1; |
7569 | /* At this point, we cannot rely on remove_breakpoint | |
7570 | succeeding so we must mark the breakpoint as not inserted | |
7571 | to prevent future errors occurring in remove_breakpoints. */ | |
7572 | loc->inserted = 0; | |
8d3788bd VP |
7573 | |
7574 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7575 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7576 | |
e2dd7057 PP |
7577 | if (!disabled_shlib_breaks) |
7578 | { | |
223ffa71 | 7579 | target_terminal::ours_for_output (); |
3e43a32a MS |
7580 | warning (_("Temporarily disabling breakpoints " |
7581 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7582 | solib->so_name); |
84acb35a | 7583 | } |
e2dd7057 | 7584 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7585 | } |
7586 | } | |
84acb35a JJ |
7587 | } |
7588 | ||
63644780 NB |
7589 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7590 | notification of free_objfile. Only apply to enabled breakpoints, | |
7591 | disabled ones can just stay disabled. */ | |
7592 | ||
7593 | static void | |
7594 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7595 | { | |
7596 | struct breakpoint *b; | |
7597 | ||
7598 | if (objfile == NULL) | |
7599 | return; | |
7600 | ||
d03de421 PA |
7601 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7602 | managed by the user with add-symbol-file/remove-symbol-file. | |
7603 | Similarly to how breakpoints in shared libraries are handled in | |
7604 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7605 | shlib_disabled so they end up uninserted on the next global |
7606 | location list update. Shared libraries not loaded by the user | |
7607 | aren't handled here -- they're already handled in | |
7608 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7609 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7610 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7611 | main objfile). */ | |
7612 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7613 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7614 | return; |
7615 | ||
7616 | ALL_BREAKPOINTS (b) | |
7617 | { | |
7618 | struct bp_location *loc; | |
7619 | int bp_modified = 0; | |
7620 | ||
7621 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7622 | continue; | |
7623 | ||
7624 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7625 | { | |
7626 | CORE_ADDR loc_addr = loc->address; | |
7627 | ||
7628 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7629 | && loc->loc_type != bp_loc_software_breakpoint) | |
7630 | continue; | |
7631 | ||
7632 | if (loc->shlib_disabled != 0) | |
7633 | continue; | |
7634 | ||
7635 | if (objfile->pspace != loc->pspace) | |
7636 | continue; | |
7637 | ||
7638 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7639 | && loc->loc_type != bp_loc_software_breakpoint) | |
7640 | continue; | |
7641 | ||
7642 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7643 | { | |
7644 | loc->shlib_disabled = 1; | |
08351840 PA |
7645 | /* At this point, we don't know whether the object was |
7646 | unmapped from the inferior or not, so leave the | |
7647 | inserted flag alone. We'll handle failure to | |
7648 | uninsert quietly, in case the object was indeed | |
7649 | unmapped. */ | |
63644780 NB |
7650 | |
7651 | mark_breakpoint_location_modified (loc); | |
7652 | ||
7653 | bp_modified = 1; | |
7654 | } | |
7655 | } | |
7656 | ||
7657 | if (bp_modified) | |
76727919 | 7658 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7659 | } |
7660 | } | |
7661 | ||
ce78b96d JB |
7662 | /* FORK & VFORK catchpoints. */ |
7663 | ||
e29a4733 | 7664 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7665 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7666 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7667 | |
c1fc2657 | 7668 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7669 | { |
e29a4733 PA |
7670 | /* Process id of a child process whose forking triggered this |
7671 | catchpoint. This field is only valid immediately after this | |
7672 | catchpoint has triggered. */ | |
7673 | ptid_t forked_inferior_pid; | |
7674 | }; | |
7675 | ||
4a64f543 MS |
7676 | /* Implement the "insert" breakpoint_ops method for fork |
7677 | catchpoints. */ | |
ce78b96d | 7678 | |
77b06cd7 TJB |
7679 | static int |
7680 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7681 | { |
e99b03dc | 7682 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7683 | } |
7684 | ||
4a64f543 MS |
7685 | /* Implement the "remove" breakpoint_ops method for fork |
7686 | catchpoints. */ | |
ce78b96d JB |
7687 | |
7688 | static int | |
73971819 | 7689 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7690 | { |
e99b03dc | 7691 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7692 | } |
7693 | ||
7694 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7695 | catchpoints. */ | |
7696 | ||
7697 | static int | |
f1310107 | 7698 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7699 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7700 | const struct target_waitstatus *ws) |
ce78b96d | 7701 | { |
e29a4733 PA |
7702 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7703 | ||
f90263c1 TT |
7704 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7705 | return 0; | |
7706 | ||
7707 | c->forked_inferior_pid = ws->value.related_pid; | |
7708 | return 1; | |
ce78b96d JB |
7709 | } |
7710 | ||
4a64f543 MS |
7711 | /* Implement the "print_it" breakpoint_ops method for fork |
7712 | catchpoints. */ | |
ce78b96d JB |
7713 | |
7714 | static enum print_stop_action | |
348d480f | 7715 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7716 | { |
36dfb11c | 7717 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7718 | struct breakpoint *b = bs->breakpoint_at; |
7719 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7720 | |
ce78b96d | 7721 | annotate_catchpoint (b->number); |
f303dbd6 | 7722 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7723 | if (b->disposition == disp_del) |
112e8700 | 7724 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7725 | else |
112e8700 SM |
7726 | uiout->text ("Catchpoint "); |
7727 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7728 | { |
112e8700 SM |
7729 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7730 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7731 | } |
112e8700 SM |
7732 | uiout->field_int ("bkptno", b->number); |
7733 | uiout->text (" (forked process "); | |
e99b03dc | 7734 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7735 | uiout->text ("), "); |
ce78b96d JB |
7736 | return PRINT_SRC_AND_LOC; |
7737 | } | |
7738 | ||
4a64f543 MS |
7739 | /* Implement the "print_one" breakpoint_ops method for fork |
7740 | catchpoints. */ | |
ce78b96d JB |
7741 | |
7742 | static void | |
a6d9a66e | 7743 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7744 | { |
e29a4733 | 7745 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7746 | struct value_print_options opts; |
79a45e25 | 7747 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7748 | |
7749 | get_user_print_options (&opts); | |
7750 | ||
4a64f543 MS |
7751 | /* Field 4, the address, is omitted (which makes the columns not |
7752 | line up too nicely with the headers, but the effect is relatively | |
7753 | readable). */ | |
79a45b7d | 7754 | if (opts.addressprint) |
112e8700 | 7755 | uiout->field_skip ("addr"); |
ce78b96d | 7756 | annotate_field (5); |
112e8700 | 7757 | uiout->text ("fork"); |
d7e15655 | 7758 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7759 | { |
112e8700 | 7760 | uiout->text (", process "); |
e99b03dc | 7761 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7762 | uiout->spaces (1); |
ce78b96d | 7763 | } |
8ac3646f | 7764 | |
112e8700 SM |
7765 | if (uiout->is_mi_like_p ()) |
7766 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7767 | } |
7768 | ||
7769 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7770 | catchpoints. */ | |
7771 | ||
7772 | static void | |
7773 | print_mention_catch_fork (struct breakpoint *b) | |
7774 | { | |
7775 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7776 | } | |
7777 | ||
6149aea9 PA |
7778 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7779 | catchpoints. */ | |
7780 | ||
7781 | static void | |
7782 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7783 | { | |
7784 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7785 | print_recreate_thread (b, fp); |
6149aea9 PA |
7786 | } |
7787 | ||
ce78b96d JB |
7788 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7789 | ||
2060206e | 7790 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7791 | |
4a64f543 MS |
7792 | /* Implement the "insert" breakpoint_ops method for vfork |
7793 | catchpoints. */ | |
ce78b96d | 7794 | |
77b06cd7 TJB |
7795 | static int |
7796 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7797 | { |
e99b03dc | 7798 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7799 | } |
7800 | ||
4a64f543 MS |
7801 | /* Implement the "remove" breakpoint_ops method for vfork |
7802 | catchpoints. */ | |
ce78b96d JB |
7803 | |
7804 | static int | |
73971819 | 7805 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7806 | { |
e99b03dc | 7807 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7808 | } |
7809 | ||
7810 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7811 | catchpoints. */ | |
7812 | ||
7813 | static int | |
f1310107 | 7814 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7815 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7816 | const struct target_waitstatus *ws) |
ce78b96d | 7817 | { |
e29a4733 PA |
7818 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7819 | ||
f90263c1 TT |
7820 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7821 | return 0; | |
7822 | ||
7823 | c->forked_inferior_pid = ws->value.related_pid; | |
7824 | return 1; | |
ce78b96d JB |
7825 | } |
7826 | ||
4a64f543 MS |
7827 | /* Implement the "print_it" breakpoint_ops method for vfork |
7828 | catchpoints. */ | |
ce78b96d JB |
7829 | |
7830 | static enum print_stop_action | |
348d480f | 7831 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7832 | { |
36dfb11c | 7833 | struct ui_out *uiout = current_uiout; |
348d480f | 7834 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7835 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7836 | ||
ce78b96d | 7837 | annotate_catchpoint (b->number); |
f303dbd6 | 7838 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7839 | if (b->disposition == disp_del) |
112e8700 | 7840 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7841 | else |
112e8700 SM |
7842 | uiout->text ("Catchpoint "); |
7843 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7844 | { |
112e8700 SM |
7845 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7846 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7847 | } |
112e8700 SM |
7848 | uiout->field_int ("bkptno", b->number); |
7849 | uiout->text (" (vforked process "); | |
e99b03dc | 7850 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7851 | uiout->text ("), "); |
ce78b96d JB |
7852 | return PRINT_SRC_AND_LOC; |
7853 | } | |
7854 | ||
4a64f543 MS |
7855 | /* Implement the "print_one" breakpoint_ops method for vfork |
7856 | catchpoints. */ | |
ce78b96d JB |
7857 | |
7858 | static void | |
a6d9a66e | 7859 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7860 | { |
e29a4733 | 7861 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7862 | struct value_print_options opts; |
79a45e25 | 7863 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7864 | |
7865 | get_user_print_options (&opts); | |
4a64f543 MS |
7866 | /* Field 4, the address, is omitted (which makes the columns not |
7867 | line up too nicely with the headers, but the effect is relatively | |
7868 | readable). */ | |
79a45b7d | 7869 | if (opts.addressprint) |
112e8700 | 7870 | uiout->field_skip ("addr"); |
ce78b96d | 7871 | annotate_field (5); |
112e8700 | 7872 | uiout->text ("vfork"); |
d7e15655 | 7873 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7874 | { |
112e8700 | 7875 | uiout->text (", process "); |
e99b03dc | 7876 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7877 | uiout->spaces (1); |
ce78b96d | 7878 | } |
8ac3646f | 7879 | |
112e8700 SM |
7880 | if (uiout->is_mi_like_p ()) |
7881 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7882 | } |
7883 | ||
7884 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7885 | catchpoints. */ | |
7886 | ||
7887 | static void | |
7888 | print_mention_catch_vfork (struct breakpoint *b) | |
7889 | { | |
7890 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7891 | } | |
7892 | ||
6149aea9 PA |
7893 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7894 | catchpoints. */ | |
7895 | ||
7896 | static void | |
7897 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7898 | { | |
7899 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7900 | print_recreate_thread (b, fp); |
6149aea9 PA |
7901 | } |
7902 | ||
ce78b96d JB |
7903 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7904 | ||
2060206e | 7905 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7906 | |
edcc5120 | 7907 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7908 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7909 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7910 | ||
c1fc2657 | 7911 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7912 | { |
c1fc2657 | 7913 | ~solib_catchpoint () override; |
edcc5120 TT |
7914 | |
7915 | /* True for "catch load", false for "catch unload". */ | |
7916 | unsigned char is_load; | |
7917 | ||
7918 | /* Regular expression to match, if any. COMPILED is only valid when | |
7919 | REGEX is non-NULL. */ | |
7920 | char *regex; | |
2d7cc5c7 | 7921 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7922 | }; |
7923 | ||
c1fc2657 | 7924 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7925 | { |
c1fc2657 | 7926 | xfree (this->regex); |
edcc5120 TT |
7927 | } |
7928 | ||
7929 | static int | |
7930 | insert_catch_solib (struct bp_location *ignore) | |
7931 | { | |
7932 | return 0; | |
7933 | } | |
7934 | ||
7935 | static int | |
73971819 | 7936 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7937 | { |
7938 | return 0; | |
7939 | } | |
7940 | ||
7941 | static int | |
7942 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7943 | const address_space *aspace, |
edcc5120 TT |
7944 | CORE_ADDR bp_addr, |
7945 | const struct target_waitstatus *ws) | |
7946 | { | |
7947 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7948 | struct breakpoint *other; | |
7949 | ||
7950 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7951 | return 1; | |
7952 | ||
7953 | ALL_BREAKPOINTS (other) | |
7954 | { | |
7955 | struct bp_location *other_bl; | |
7956 | ||
7957 | if (other == bl->owner) | |
7958 | continue; | |
7959 | ||
7960 | if (other->type != bp_shlib_event) | |
7961 | continue; | |
7962 | ||
c1fc2657 | 7963 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7964 | continue; |
7965 | ||
7966 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7967 | { | |
7968 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7969 | return 1; | |
7970 | } | |
7971 | } | |
7972 | ||
7973 | return 0; | |
7974 | } | |
7975 | ||
7976 | static void | |
7977 | check_status_catch_solib (struct bpstats *bs) | |
7978 | { | |
7979 | struct solib_catchpoint *self | |
7980 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7981 | |
7982 | if (self->is_load) | |
7983 | { | |
52941706 | 7984 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7985 | { |
7986 | if (!self->regex | |
2d7cc5c7 | 7987 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7988 | return; |
7989 | } | |
7990 | } | |
7991 | else | |
7992 | { | |
6fb16ce6 | 7993 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7994 | { |
7995 | if (!self->regex | |
6fb16ce6 | 7996 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
7997 | return; |
7998 | } | |
7999 | } | |
8000 | ||
8001 | bs->stop = 0; | |
8002 | bs->print_it = print_it_noop; | |
8003 | } | |
8004 | ||
8005 | static enum print_stop_action | |
8006 | print_it_catch_solib (bpstat bs) | |
8007 | { | |
8008 | struct breakpoint *b = bs->breakpoint_at; | |
8009 | struct ui_out *uiout = current_uiout; | |
8010 | ||
8011 | annotate_catchpoint (b->number); | |
f303dbd6 | 8012 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8013 | if (b->disposition == disp_del) |
112e8700 | 8014 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8015 | else |
112e8700 SM |
8016 | uiout->text ("Catchpoint "); |
8017 | uiout->field_int ("bkptno", b->number); | |
8018 | uiout->text ("\n"); | |
8019 | if (uiout->is_mi_like_p ()) | |
8020 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8021 | print_solib_event (1); |
8022 | return PRINT_SRC_AND_LOC; | |
8023 | } | |
8024 | ||
8025 | static void | |
8026 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8027 | { | |
8028 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8029 | struct value_print_options opts; | |
8030 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8031 | |
8032 | get_user_print_options (&opts); | |
8033 | /* Field 4, the address, is omitted (which makes the columns not | |
8034 | line up too nicely with the headers, but the effect is relatively | |
8035 | readable). */ | |
8036 | if (opts.addressprint) | |
8037 | { | |
8038 | annotate_field (4); | |
112e8700 | 8039 | uiout->field_skip ("addr"); |
edcc5120 TT |
8040 | } |
8041 | ||
528e1572 | 8042 | std::string msg; |
edcc5120 TT |
8043 | annotate_field (5); |
8044 | if (self->is_load) | |
8045 | { | |
8046 | if (self->regex) | |
528e1572 | 8047 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8048 | else |
528e1572 | 8049 | msg = _("load of library"); |
edcc5120 TT |
8050 | } |
8051 | else | |
8052 | { | |
8053 | if (self->regex) | |
528e1572 | 8054 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8055 | else |
528e1572 | 8056 | msg = _("unload of library"); |
edcc5120 | 8057 | } |
112e8700 | 8058 | uiout->field_string ("what", msg); |
8ac3646f | 8059 | |
112e8700 SM |
8060 | if (uiout->is_mi_like_p ()) |
8061 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8062 | } |
8063 | ||
8064 | static void | |
8065 | print_mention_catch_solib (struct breakpoint *b) | |
8066 | { | |
8067 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8068 | ||
8069 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8070 | self->is_load ? "load" : "unload"); | |
8071 | } | |
8072 | ||
8073 | static void | |
8074 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8075 | { | |
8076 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8077 | ||
8078 | fprintf_unfiltered (fp, "%s %s", | |
8079 | b->disposition == disp_del ? "tcatch" : "catch", | |
8080 | self->is_load ? "load" : "unload"); | |
8081 | if (self->regex) | |
8082 | fprintf_unfiltered (fp, " %s", self->regex); | |
8083 | fprintf_unfiltered (fp, "\n"); | |
8084 | } | |
8085 | ||
8086 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8087 | ||
91985142 MG |
8088 | /* Shared helper function (MI and CLI) for creating and installing |
8089 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8090 | the events to be caught are load events, otherwise they are | |
8091 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8092 | temporary one. If ENABLED is non-zero the catchpoint is | |
8093 | created in an enabled state. */ | |
edcc5120 | 8094 | |
91985142 | 8095 | void |
a121b7c1 | 8096 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8097 | { |
edcc5120 | 8098 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8099 | |
edcc5120 TT |
8100 | if (!arg) |
8101 | arg = ""; | |
f1735a53 | 8102 | arg = skip_spaces (arg); |
edcc5120 | 8103 | |
36bd8eaa | 8104 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8105 | |
8106 | if (*arg != '\0') | |
8107 | { | |
2d7cc5c7 PA |
8108 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8109 | _("Invalid regexp"))); | |
edcc5120 TT |
8110 | c->regex = xstrdup (arg); |
8111 | } | |
8112 | ||
8113 | c->is_load = is_load; | |
36bd8eaa | 8114 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8115 | &catch_solib_breakpoint_ops); |
8116 | ||
c1fc2657 | 8117 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8118 | |
b270e6f9 | 8119 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8120 | } |
8121 | ||
91985142 MG |
8122 | /* A helper function that does all the work for "catch load" and |
8123 | "catch unload". */ | |
8124 | ||
8125 | static void | |
eb4c3f4a | 8126 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8127 | struct cmd_list_element *command) |
8128 | { | |
8129 | int tempflag; | |
8130 | const int enabled = 1; | |
8131 | ||
8132 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8133 | ||
8134 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8135 | } | |
8136 | ||
edcc5120 | 8137 | static void |
eb4c3f4a | 8138 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8139 | struct cmd_list_element *command) |
8140 | { | |
8141 | catch_load_or_unload (arg, from_tty, 1, command); | |
8142 | } | |
8143 | ||
8144 | static void | |
eb4c3f4a | 8145 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8146 | struct cmd_list_element *command) |
8147 | { | |
8148 | catch_load_or_unload (arg, from_tty, 0, command); | |
8149 | } | |
8150 | ||
346774a9 PA |
8151 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8152 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8153 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8154 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8155 | |
ab04a2af | 8156 | void |
346774a9 PA |
8157 | init_catchpoint (struct breakpoint *b, |
8158 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8159 | const char *cond_string, |
c0a91b2b | 8160 | const struct breakpoint_ops *ops) |
c906108c | 8161 | { |
51abb421 | 8162 | symtab_and_line sal; |
6c95b8df | 8163 | sal.pspace = current_program_space; |
c5aa993b | 8164 | |
28010a5d | 8165 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8166 | |
1b36a34b | 8167 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8168 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8169 | } |
8170 | ||
28010a5d | 8171 | void |
b270e6f9 | 8172 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8173 | { |
b270e6f9 | 8174 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8175 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8176 | if (is_tracepoint (b)) |
8177 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8178 | if (!internal) |
8179 | mention (b); | |
76727919 | 8180 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8181 | |
8182 | if (update_gll) | |
44702360 | 8183 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8184 | } |
8185 | ||
9b70b993 | 8186 | static void |
a6d9a66e | 8187 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8188 | int tempflag, const char *cond_string, |
c0a91b2b | 8189 | const struct breakpoint_ops *ops) |
c906108c | 8190 | { |
b270e6f9 | 8191 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8192 | |
b270e6f9 | 8193 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8194 | |
8195 | c->forked_inferior_pid = null_ptid; | |
8196 | ||
b270e6f9 | 8197 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8198 | } |
8199 | ||
fe798b75 JB |
8200 | /* Exec catchpoints. */ |
8201 | ||
b4d90040 | 8202 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8203 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8204 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8205 | ||
c1fc2657 | 8206 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8207 | { |
c1fc2657 | 8208 | ~exec_catchpoint () override; |
b4d90040 PA |
8209 | |
8210 | /* Filename of a program whose exec triggered this catchpoint. | |
8211 | This field is only valid immediately after this catchpoint has | |
8212 | triggered. */ | |
8213 | char *exec_pathname; | |
8214 | }; | |
8215 | ||
c1fc2657 | 8216 | /* Exec catchpoint destructor. */ |
b4d90040 | 8217 | |
c1fc2657 | 8218 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8219 | { |
c1fc2657 | 8220 | xfree (this->exec_pathname); |
b4d90040 PA |
8221 | } |
8222 | ||
77b06cd7 TJB |
8223 | static int |
8224 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8225 | { |
e99b03dc | 8226 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8227 | } |
c906108c | 8228 | |
fe798b75 | 8229 | static int |
73971819 | 8230 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8231 | { |
e99b03dc | 8232 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8233 | } |
c906108c | 8234 | |
fe798b75 | 8235 | static int |
f1310107 | 8236 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8237 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8238 | const struct target_waitstatus *ws) |
fe798b75 | 8239 | { |
b4d90040 PA |
8240 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8241 | ||
f90263c1 TT |
8242 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8243 | return 0; | |
8244 | ||
8245 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8246 | return 1; | |
fe798b75 | 8247 | } |
c906108c | 8248 | |
fe798b75 | 8249 | static enum print_stop_action |
348d480f | 8250 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8251 | { |
36dfb11c | 8252 | struct ui_out *uiout = current_uiout; |
348d480f | 8253 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8254 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8255 | ||
fe798b75 | 8256 | annotate_catchpoint (b->number); |
f303dbd6 | 8257 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8258 | if (b->disposition == disp_del) |
112e8700 | 8259 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8260 | else |
112e8700 SM |
8261 | uiout->text ("Catchpoint "); |
8262 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8263 | { |
112e8700 SM |
8264 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8265 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8266 | } |
112e8700 SM |
8267 | uiout->field_int ("bkptno", b->number); |
8268 | uiout->text (" (exec'd "); | |
8269 | uiout->field_string ("new-exec", c->exec_pathname); | |
8270 | uiout->text ("), "); | |
36dfb11c | 8271 | |
fe798b75 | 8272 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8273 | } |
8274 | ||
fe798b75 | 8275 | static void |
a6d9a66e | 8276 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8277 | { |
b4d90040 | 8278 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8279 | struct value_print_options opts; |
79a45e25 | 8280 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8281 | |
8282 | get_user_print_options (&opts); | |
8283 | ||
8284 | /* Field 4, the address, is omitted (which makes the columns | |
8285 | not line up too nicely with the headers, but the effect | |
8286 | is relatively readable). */ | |
8287 | if (opts.addressprint) | |
112e8700 | 8288 | uiout->field_skip ("addr"); |
fe798b75 | 8289 | annotate_field (5); |
112e8700 | 8290 | uiout->text ("exec"); |
b4d90040 | 8291 | if (c->exec_pathname != NULL) |
fe798b75 | 8292 | { |
112e8700 SM |
8293 | uiout->text (", program \""); |
8294 | uiout->field_string ("what", c->exec_pathname); | |
8295 | uiout->text ("\" "); | |
fe798b75 | 8296 | } |
8ac3646f | 8297 | |
112e8700 SM |
8298 | if (uiout->is_mi_like_p ()) |
8299 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8300 | } |
8301 | ||
8302 | static void | |
8303 | print_mention_catch_exec (struct breakpoint *b) | |
8304 | { | |
8305 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8306 | } | |
8307 | ||
6149aea9 PA |
8308 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8309 | catchpoints. */ | |
8310 | ||
8311 | static void | |
8312 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8313 | { | |
8314 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8315 | print_recreate_thread (b, fp); |
6149aea9 PA |
8316 | } |
8317 | ||
2060206e | 8318 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8319 | |
c906108c | 8320 | static int |
fba45db2 | 8321 | hw_breakpoint_used_count (void) |
c906108c | 8322 | { |
c906108c | 8323 | int i = 0; |
f1310107 TJB |
8324 | struct breakpoint *b; |
8325 | struct bp_location *bl; | |
c906108c SS |
8326 | |
8327 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8328 | { |
d6b74ac4 | 8329 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8330 | for (bl = b->loc; bl; bl = bl->next) |
8331 | { | |
8332 | /* Special types of hardware breakpoints may use more than | |
8333 | one register. */ | |
348d480f | 8334 | i += b->ops->resources_needed (bl); |
f1310107 | 8335 | } |
c5aa993b | 8336 | } |
c906108c SS |
8337 | |
8338 | return i; | |
8339 | } | |
8340 | ||
a1398e0c PA |
8341 | /* Returns the resources B would use if it were a hardware |
8342 | watchpoint. */ | |
8343 | ||
c906108c | 8344 | static int |
a1398e0c | 8345 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8346 | { |
c906108c | 8347 | int i = 0; |
e09342b5 | 8348 | struct bp_location *bl; |
c906108c | 8349 | |
a1398e0c PA |
8350 | if (!breakpoint_enabled (b)) |
8351 | return 0; | |
8352 | ||
8353 | for (bl = b->loc; bl; bl = bl->next) | |
8354 | { | |
8355 | /* Special types of hardware watchpoints may use more than | |
8356 | one register. */ | |
8357 | i += b->ops->resources_needed (bl); | |
8358 | } | |
8359 | ||
8360 | return i; | |
8361 | } | |
8362 | ||
8363 | /* Returns the sum the used resources of all hardware watchpoints of | |
8364 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8365 | the sum of the used resources of all hardware watchpoints of other | |
8366 | types _not_ TYPE. */ | |
8367 | ||
8368 | static int | |
8369 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8370 | enum bptype type, int *other_type_used) | |
8371 | { | |
8372 | int i = 0; | |
8373 | struct breakpoint *b; | |
8374 | ||
c906108c SS |
8375 | *other_type_used = 0; |
8376 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8377 | { |
a1398e0c PA |
8378 | if (b == except) |
8379 | continue; | |
e09342b5 TJB |
8380 | if (!breakpoint_enabled (b)) |
8381 | continue; | |
8382 | ||
a1398e0c PA |
8383 | if (b->type == type) |
8384 | i += hw_watchpoint_use_count (b); | |
8385 | else if (is_hardware_watchpoint (b)) | |
8386 | *other_type_used = 1; | |
e09342b5 TJB |
8387 | } |
8388 | ||
c906108c SS |
8389 | return i; |
8390 | } | |
8391 | ||
c906108c | 8392 | void |
fba45db2 | 8393 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8394 | { |
c5aa993b | 8395 | struct breakpoint *b; |
c906108c SS |
8396 | |
8397 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8398 | { |
cc60f2e3 | 8399 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8400 | { |
b5de0fa7 | 8401 | b->enable_state = bp_call_disabled; |
44702360 | 8402 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8403 | } |
8404 | } | |
c906108c SS |
8405 | } |
8406 | ||
8407 | void | |
fba45db2 | 8408 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8409 | { |
c5aa993b | 8410 | struct breakpoint *b; |
c906108c SS |
8411 | |
8412 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8413 | { |
cc60f2e3 | 8414 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8415 | { |
b5de0fa7 | 8416 | b->enable_state = bp_enabled; |
44702360 | 8417 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8418 | } |
8419 | } | |
c906108c SS |
8420 | } |
8421 | ||
8bea4e01 UW |
8422 | void |
8423 | disable_breakpoints_before_startup (void) | |
8424 | { | |
6c95b8df | 8425 | current_program_space->executing_startup = 1; |
44702360 | 8426 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8427 | } |
8428 | ||
8429 | void | |
8430 | enable_breakpoints_after_startup (void) | |
8431 | { | |
6c95b8df | 8432 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8433 | breakpoint_re_set (); |
8bea4e01 UW |
8434 | } |
8435 | ||
7c16b83e PA |
8436 | /* Create a new single-step breakpoint for thread THREAD, with no |
8437 | locations. */ | |
c906108c | 8438 | |
7c16b83e PA |
8439 | static struct breakpoint * |
8440 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8441 | { | |
b270e6f9 | 8442 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8443 | |
b270e6f9 | 8444 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8445 | &momentary_breakpoint_ops); |
8446 | ||
8447 | b->disposition = disp_donttouch; | |
8448 | b->frame_id = null_frame_id; | |
8449 | ||
8450 | b->thread = thread; | |
8451 | gdb_assert (b->thread != 0); | |
8452 | ||
b270e6f9 | 8453 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8454 | } |
8455 | ||
8456 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8457 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8458 | frame. */ | |
c906108c | 8459 | |
454dafbd | 8460 | breakpoint_up |
a6d9a66e UW |
8461 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8462 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8463 | { |
52f0bd74 | 8464 | struct breakpoint *b; |
edb3359d | 8465 | |
193facb3 JK |
8466 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8467 | tail-called one. */ | |
8468 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8469 | |
06edf0c0 | 8470 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8471 | b->enable_state = bp_enabled; |
8472 | b->disposition = disp_donttouch; | |
818dd999 | 8473 | b->frame_id = frame_id; |
c906108c | 8474 | |
00431a78 | 8475 | b->thread = inferior_thread ()->global_num; |
c906108c | 8476 | |
44702360 | 8477 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8478 | |
454dafbd | 8479 | return breakpoint_up (b); |
c906108c | 8480 | } |
611c83ae | 8481 | |
06edf0c0 | 8482 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8483 | The new breakpoint will have type TYPE, use OPS as its |
8484 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8485 | |
06edf0c0 PA |
8486 | static struct breakpoint * |
8487 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8488 | enum bptype type, | |
a1aa2221 LM |
8489 | const struct breakpoint_ops *ops, |
8490 | int loc_enabled) | |
e58b0e63 PA |
8491 | { |
8492 | struct breakpoint *copy; | |
8493 | ||
06edf0c0 | 8494 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8495 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8496 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8497 | |
a6d9a66e | 8498 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8499 | copy->loc->requested_address = orig->loc->requested_address; |
8500 | copy->loc->address = orig->loc->address; | |
8501 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8502 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8503 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8504 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8505 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8506 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8507 | copy->frame_id = orig->frame_id; |
8508 | copy->thread = orig->thread; | |
6c95b8df | 8509 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8510 | |
8511 | copy->enable_state = bp_enabled; | |
8512 | copy->disposition = disp_donttouch; | |
8513 | copy->number = internal_breakpoint_number--; | |
8514 | ||
44702360 | 8515 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8516 | return copy; |
8517 | } | |
8518 | ||
06edf0c0 PA |
8519 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8520 | ORIG is NULL. */ | |
8521 | ||
8522 | struct breakpoint * | |
8523 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8524 | { | |
8525 | /* If there's nothing to clone, then return nothing. */ | |
8526 | if (orig == NULL) | |
8527 | return NULL; | |
8528 | ||
a1aa2221 | 8529 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8530 | } |
8531 | ||
454dafbd | 8532 | breakpoint_up |
a6d9a66e UW |
8533 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8534 | enum bptype type) | |
611c83ae PA |
8535 | { |
8536 | struct symtab_and_line sal; | |
8537 | ||
8538 | sal = find_pc_line (pc, 0); | |
8539 | sal.pc = pc; | |
8540 | sal.section = find_pc_overlay (pc); | |
8541 | sal.explicit_pc = 1; | |
8542 | ||
a6d9a66e | 8543 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8544 | } |
c906108c | 8545 | \f |
c5aa993b | 8546 | |
c906108c SS |
8547 | /* Tell the user we have just set a breakpoint B. */ |
8548 | ||
8549 | static void | |
fba45db2 | 8550 | mention (struct breakpoint *b) |
c906108c | 8551 | { |
348d480f | 8552 | b->ops->print_mention (b); |
2d33446d | 8553 | current_uiout->text ("\n"); |
c906108c | 8554 | } |
c906108c | 8555 | \f |
c5aa993b | 8556 | |
1a853c52 PA |
8557 | static int bp_loc_is_permanent (struct bp_location *loc); |
8558 | ||
0d381245 | 8559 | static struct bp_location * |
39d61571 | 8560 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8561 | const struct symtab_and_line *sal) |
8562 | { | |
8563 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8564 | CORE_ADDR adjusted_address; |
8565 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8566 | ||
8567 | if (loc_gdbarch == NULL) | |
8568 | loc_gdbarch = b->gdbarch; | |
8569 | ||
8570 | /* Adjust the breakpoint's address prior to allocating a location. | |
8571 | Once we call allocate_bp_location(), that mostly uninitialized | |
8572 | location will be placed on the location chain. Adjustment of the | |
8573 | breakpoint may cause target_read_memory() to be called and we do | |
8574 | not want its scan of the location chain to find a breakpoint and | |
8575 | location that's only been partially initialized. */ | |
8576 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8577 | sal->pc, b->type); | |
0d381245 | 8578 | |
d30113d4 | 8579 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8580 | loc = allocate_bp_location (b); |
d30113d4 JK |
8581 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8582 | tmp = &((*tmp)->next)) | |
0d381245 | 8583 | ; |
d30113d4 | 8584 | loc->next = *tmp; |
0d381245 | 8585 | *tmp = loc; |
3742cc8b | 8586 | |
0d381245 | 8587 | loc->requested_address = sal->pc; |
3742cc8b | 8588 | loc->address = adjusted_address; |
6c95b8df | 8589 | loc->pspace = sal->pspace; |
935676c9 | 8590 | loc->probe.prob = sal->prob; |
729662a5 | 8591 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8592 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8593 | loc->section = sal->section; |
3742cc8b | 8594 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8595 | loc->line_number = sal->line; |
2f202fde | 8596 | loc->symtab = sal->symtab; |
4a27f119 | 8597 | loc->symbol = sal->symbol; |
3467ec66 PA |
8598 | loc->msymbol = sal->msymbol; |
8599 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8600 | |
0e30163f JK |
8601 | set_breakpoint_location_function (loc, |
8602 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8603 | |
6ae88661 LM |
8604 | /* While by definition, permanent breakpoints are already present in the |
8605 | code, we don't mark the location as inserted. Normally one would expect | |
8606 | that GDB could rely on that breakpoint instruction to stop the program, | |
8607 | thus removing the need to insert its own breakpoint, except that executing | |
8608 | the breakpoint instruction can kill the target instead of reporting a | |
8609 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8610 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8611 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8612 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8613 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8614 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8615 | it manually increments the PC, thus avoiding executing the breakpoint | |
8616 | instruction.) */ | |
1a853c52 | 8617 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8618 | loc->permanent = 1; |
1a853c52 | 8619 | |
0d381245 VP |
8620 | return loc; |
8621 | } | |
514f746b AR |
8622 | \f |
8623 | ||
1cf4d951 | 8624 | /* See breakpoint.h. */ |
514f746b | 8625 | |
1cf4d951 PA |
8626 | int |
8627 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8628 | { |
8629 | int len; | |
8630 | CORE_ADDR addr; | |
1afeeb75 | 8631 | const gdb_byte *bpoint; |
514f746b AR |
8632 | gdb_byte *target_mem; |
8633 | ||
1cf4d951 PA |
8634 | addr = address; |
8635 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8636 | ||
8637 | /* Software breakpoints unsupported? */ | |
8638 | if (bpoint == NULL) | |
8639 | return 0; | |
8640 | ||
224c3ddb | 8641 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8642 | |
8643 | /* Enable the automatic memory restoration from breakpoints while | |
8644 | we read the memory. Otherwise we could say about our temporary | |
8645 | breakpoints they are permanent. */ | |
cb85b21b TT |
8646 | scoped_restore restore_memory |
8647 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8648 | |
8649 | if (target_read_memory (address, target_mem, len) == 0 | |
8650 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8651 | return 1; |
1cf4d951 | 8652 | |
cb85b21b | 8653 | return 0; |
1cf4d951 PA |
8654 | } |
8655 | ||
8656 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8657 | return 0 otherwise. */ | |
8658 | ||
8659 | static int | |
8660 | bp_loc_is_permanent (struct bp_location *loc) | |
8661 | { | |
514f746b AR |
8662 | gdb_assert (loc != NULL); |
8663 | ||
244558af LM |
8664 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8665 | attempt to read from the addresses the locations of these breakpoint types | |
8666 | point to. program_breakpoint_here_p, below, will attempt to read | |
8667 | memory. */ | |
8668 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8669 | return 0; | |
8670 | ||
5ed8105e | 8671 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8672 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8673 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8674 | } |
8675 | ||
e7e0cddf SS |
8676 | /* Build a command list for the dprintf corresponding to the current |
8677 | settings of the dprintf style options. */ | |
8678 | ||
8679 | static void | |
8680 | update_dprintf_command_list (struct breakpoint *b) | |
8681 | { | |
8682 | char *dprintf_args = b->extra_string; | |
8683 | char *printf_line = NULL; | |
8684 | ||
8685 | if (!dprintf_args) | |
8686 | return; | |
8687 | ||
8688 | dprintf_args = skip_spaces (dprintf_args); | |
8689 | ||
8690 | /* Allow a comma, as it may have terminated a location, but don't | |
8691 | insist on it. */ | |
8692 | if (*dprintf_args == ',') | |
8693 | ++dprintf_args; | |
8694 | dprintf_args = skip_spaces (dprintf_args); | |
8695 | ||
8696 | if (*dprintf_args != '"') | |
8697 | error (_("Bad format string, missing '\"'.")); | |
8698 | ||
d3ce09f5 | 8699 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8700 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8701 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8702 | { |
8703 | if (!dprintf_function) | |
8704 | error (_("No function supplied for dprintf call")); | |
8705 | ||
8706 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8707 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8708 | dprintf_function, | |
8709 | dprintf_channel, | |
8710 | dprintf_args); | |
8711 | else | |
8712 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8713 | dprintf_function, | |
8714 | dprintf_args); | |
8715 | } | |
d3ce09f5 SS |
8716 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8717 | { | |
8718 | if (target_can_run_breakpoint_commands ()) | |
8719 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8720 | else | |
8721 | { | |
8722 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8723 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8724 | } | |
8725 | } | |
e7e0cddf SS |
8726 | else |
8727 | internal_error (__FILE__, __LINE__, | |
8728 | _("Invalid dprintf style.")); | |
8729 | ||
f28045c2 | 8730 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8731 | |
12973681 TT |
8732 | /* Manufacture a printf sequence. */ |
8733 | struct command_line *printf_cmd_line | |
8734 | = new struct command_line (simple_control, printf_line); | |
8735 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8736 | command_lines_deleter ())); | |
e7e0cddf SS |
8737 | } |
8738 | ||
8739 | /* Update all dprintf commands, making their command lists reflect | |
8740 | current style settings. */ | |
8741 | ||
8742 | static void | |
eb4c3f4a | 8743 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8744 | struct cmd_list_element *c) |
8745 | { | |
8746 | struct breakpoint *b; | |
8747 | ||
8748 | ALL_BREAKPOINTS (b) | |
8749 | { | |
8750 | if (b->type == bp_dprintf) | |
8751 | update_dprintf_command_list (b); | |
8752 | } | |
8753 | } | |
c3f6f71d | 8754 | |
f00aae0f KS |
8755 | /* Create a breakpoint with SAL as location. Use LOCATION |
8756 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8757 | as condition expression. If LOCATION is NULL then create an |
8758 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8759 | |
8760 | static void | |
d9b3f62e | 8761 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8762 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8763 | event_location_up &&location, |
e1e01040 PA |
8764 | gdb::unique_xmalloc_ptr<char> filter, |
8765 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8766 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8767 | enum bptype type, enum bpdisp disposition, |
8768 | int thread, int task, int ignore_count, | |
c0a91b2b | 8769 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8770 | int enabled, int internal, unsigned flags, |
8771 | int display_canonical) | |
018d34a4 | 8772 | { |
0d381245 | 8773 | int i; |
018d34a4 VP |
8774 | |
8775 | if (type == bp_hardware_breakpoint) | |
8776 | { | |
fbbd034e AS |
8777 | int target_resources_ok; |
8778 | ||
8779 | i = hw_breakpoint_used_count (); | |
8780 | target_resources_ok = | |
8781 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8782 | i + 1, 0); |
8783 | if (target_resources_ok == 0) | |
8784 | error (_("No hardware breakpoint support in the target.")); | |
8785 | else if (target_resources_ok < 0) | |
8786 | error (_("Hardware breakpoints used exceeds limit.")); | |
8787 | } | |
8788 | ||
6c5b2ebe | 8789 | gdb_assert (!sals.empty ()); |
6c95b8df | 8790 | |
6c5b2ebe | 8791 | for (const auto &sal : sals) |
0d381245 | 8792 | { |
0d381245 VP |
8793 | struct bp_location *loc; |
8794 | ||
8795 | if (from_tty) | |
5af949e3 UW |
8796 | { |
8797 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8798 | if (!loc_gdbarch) | |
8799 | loc_gdbarch = gdbarch; | |
8800 | ||
8801 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8802 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8803 | } |
0d381245 | 8804 | |
6c5b2ebe | 8805 | if (&sal == &sals[0]) |
0d381245 | 8806 | { |
d9b3f62e | 8807 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8808 | b->thread = thread; |
4a306c9a | 8809 | b->task = task; |
855a6e68 | 8810 | |
e1e01040 PA |
8811 | b->cond_string = cond_string.release (); |
8812 | b->extra_string = extra_string.release (); | |
0d381245 | 8813 | b->ignore_count = ignore_count; |
41447f92 | 8814 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8815 | b->disposition = disposition; |
6c95b8df | 8816 | |
44f238bb PA |
8817 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8818 | b->loc->inserted = 1; | |
8819 | ||
0fb4aa4b PA |
8820 | if (type == bp_static_tracepoint) |
8821 | { | |
d9b3f62e | 8822 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8823 | struct static_tracepoint_marker marker; |
8824 | ||
983af33b | 8825 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8826 | { |
8827 | /* We already know the marker exists, otherwise, we | |
8828 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8829 | const char *p |
8830 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8831 | const char *endp; |
0fb4aa4b | 8832 | |
f1735a53 | 8833 | p = skip_spaces (p); |
0fb4aa4b | 8834 | |
f1735a53 | 8835 | endp = skip_to_space (p); |
0fb4aa4b | 8836 | |
5d9310c4 | 8837 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8838 | |
3e43a32a MS |
8839 | printf_filtered (_("Probed static tracepoint " |
8840 | "marker \"%s\"\n"), | |
5d9310c4 | 8841 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8842 | } |
8843 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8844 | { | |
5d9310c4 | 8845 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8846 | |
3e43a32a MS |
8847 | printf_filtered (_("Probed static tracepoint " |
8848 | "marker \"%s\"\n"), | |
5d9310c4 | 8849 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8850 | } |
8851 | else | |
3e43a32a MS |
8852 | warning (_("Couldn't determine the static " |
8853 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8854 | } |
8855 | ||
0d381245 VP |
8856 | loc = b->loc; |
8857 | } | |
8858 | else | |
018d34a4 | 8859 | { |
39d61571 | 8860 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8861 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8862 | loc->inserted = 1; | |
0d381245 VP |
8863 | } |
8864 | ||
8865 | if (b->cond_string) | |
8866 | { | |
bbc13ae3 KS |
8867 | const char *arg = b->cond_string; |
8868 | ||
1bb9788d TT |
8869 | loc->cond = parse_exp_1 (&arg, loc->address, |
8870 | block_for_pc (loc->address), 0); | |
0d381245 | 8871 | if (*arg) |
588ae58c | 8872 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8873 | } |
e7e0cddf SS |
8874 | |
8875 | /* Dynamic printf requires and uses additional arguments on the | |
8876 | command line, otherwise it's an error. */ | |
8877 | if (type == bp_dprintf) | |
8878 | { | |
8879 | if (b->extra_string) | |
8880 | update_dprintf_command_list (b); | |
8881 | else | |
8882 | error (_("Format string required")); | |
8883 | } | |
8884 | else if (b->extra_string) | |
588ae58c | 8885 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8886 | } |
018d34a4 | 8887 | |
56435ebe | 8888 | b->display_canonical = display_canonical; |
f00aae0f | 8889 | if (location != NULL) |
d28cd78a | 8890 | b->location = std::move (location); |
018d34a4 | 8891 | else |
d28cd78a | 8892 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8893 | b->filter = filter.release (); |
d9b3f62e | 8894 | } |
018d34a4 | 8895 | |
d9b3f62e PA |
8896 | static void |
8897 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8898 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8899 | event_location_up &&location, |
e1e01040 PA |
8900 | gdb::unique_xmalloc_ptr<char> filter, |
8901 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8902 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8903 | enum bptype type, enum bpdisp disposition, |
8904 | int thread, int task, int ignore_count, | |
c0a91b2b | 8905 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8906 | int enabled, int internal, unsigned flags, |
8907 | int display_canonical) | |
d9b3f62e | 8908 | { |
a5e364af | 8909 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8910 | |
a5e364af | 8911 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8912 | sals, std::move (location), |
e1e01040 PA |
8913 | std::move (filter), |
8914 | std::move (cond_string), | |
8915 | std::move (extra_string), | |
d9b3f62e PA |
8916 | type, disposition, |
8917 | thread, task, ignore_count, | |
8918 | ops, from_tty, | |
44f238bb PA |
8919 | enabled, internal, flags, |
8920 | display_canonical); | |
d9b3f62e | 8921 | |
b270e6f9 | 8922 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8923 | } |
8924 | ||
8925 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8926 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8927 | value. COND_STRING, if not NULL, specified the condition to be | |
8928 | used for all breakpoints. Essentially the only case where | |
8929 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8930 | function. In that case, it's still not possible to specify | |
8931 | separate conditions for different overloaded functions, so | |
8932 | we take just a single condition string. | |
8933 | ||
c3f6f71d | 8934 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8935 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8936 | array contents). If the function fails (error() is called), the |
8937 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8938 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8939 | |
8940 | static void | |
8cdf0e15 | 8941 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8942 | struct linespec_result *canonical, |
e1e01040 PA |
8943 | gdb::unique_xmalloc_ptr<char> cond_string, |
8944 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8945 | enum bptype type, enum bpdisp disposition, |
8946 | int thread, int task, int ignore_count, | |
c0a91b2b | 8947 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8948 | int enabled, int internal, unsigned flags) |
c906108c | 8949 | { |
f8eba3c6 | 8950 | if (canonical->pre_expanded) |
6c5b2ebe | 8951 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8952 | |
6c5b2ebe | 8953 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8954 | { |
f00aae0f | 8955 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8956 | 'break', without arguments. */ |
ffc2605c | 8957 | event_location_up location |
f00aae0f | 8958 | = (canonical->location != NULL |
8e9e35b1 | 8959 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8960 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8961 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8962 | |
6c5b2ebe | 8963 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8964 | std::move (location), |
e1e01040 PA |
8965 | std::move (filter_string), |
8966 | std::move (cond_string), | |
8967 | std::move (extra_string), | |
e7e0cddf | 8968 | type, disposition, |
84f4c1fe | 8969 | thread, task, ignore_count, ops, |
44f238bb | 8970 | from_tty, enabled, internal, flags, |
56435ebe | 8971 | canonical->special_display); |
c3f6f71d | 8972 | } |
c3f6f71d | 8973 | } |
c906108c | 8974 | |
f00aae0f | 8975 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8976 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8977 | addresses found. LOCATION points to the end of the SAL (for |
8978 | linespec locations). | |
9998af43 TJB |
8979 | |
8980 | The array and the line spec strings are allocated on the heap, it is | |
8981 | the caller's responsibility to free them. */ | |
c906108c | 8982 | |
b9362cc7 | 8983 | static void |
f00aae0f | 8984 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8985 | struct linespec_result *canonical) |
c3f6f71d | 8986 | { |
f00aae0f KS |
8987 | struct symtab_and_line cursal; |
8988 | ||
8989 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8990 | { | |
a20714ff | 8991 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8992 | |
a20714ff | 8993 | if (spec == NULL) |
f00aae0f KS |
8994 | { |
8995 | /* The last displayed codepoint, if it's valid, is our default | |
8996 | breakpoint address. */ | |
8997 | if (last_displayed_sal_is_valid ()) | |
8998 | { | |
f00aae0f KS |
8999 | /* Set sal's pspace, pc, symtab, and line to the values |
9000 | corresponding to the last call to print_frame_info. | |
9001 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9002 | as the breakpoint line number is inappropriate otherwise. | |
9003 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9004 | symtab_and_line sal = get_last_displayed_sal (); |
9005 | CORE_ADDR pc = sal.pc; | |
9006 | ||
f00aae0f KS |
9007 | sal = find_pc_line (pc, 0); |
9008 | ||
9009 | /* "break" without arguments is equivalent to "break *PC" | |
9010 | where PC is the last displayed codepoint's address. So | |
9011 | make sure to set sal.explicit_pc to prevent GDB from | |
9012 | trying to expand the list of sals to include all other | |
9013 | instances with the same symtab and line. */ | |
9014 | sal.pc = pc; | |
9015 | sal.explicit_pc = 1; | |
9016 | ||
6c5b2ebe PA |
9017 | struct linespec_sals lsal; |
9018 | lsal.sals = {sal}; | |
f00aae0f KS |
9019 | lsal.canonical = NULL; |
9020 | ||
6c5b2ebe | 9021 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9022 | return; |
9023 | } | |
9024 | else | |
9025 | error (_("No default breakpoint address now.")); | |
c906108c | 9026 | } |
c906108c | 9027 | } |
f00aae0f KS |
9028 | |
9029 | /* Force almost all breakpoints to be in terms of the | |
9030 | current_source_symtab (which is decode_line_1's default). | |
9031 | This should produce the results we want almost all of the | |
9032 | time while leaving default_breakpoint_* alone. | |
9033 | ||
9034 | ObjC: However, don't match an Objective-C method name which | |
9035 | may have a '+' or '-' succeeded by a '['. */ | |
9036 | cursal = get_current_source_symtab_and_line (); | |
9037 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9038 | { |
a20714ff | 9039 | const char *spec = NULL; |
cc80f267 | 9040 | |
f00aae0f | 9041 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9042 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9043 | |
f00aae0f | 9044 | if (!cursal.symtab |
a20714ff PA |
9045 | || (spec != NULL |
9046 | && strchr ("+-", spec[0]) != NULL | |
9047 | && spec[1] != '[')) | |
f00aae0f | 9048 | { |
c2f4122d | 9049 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9050 | get_last_displayed_symtab (), |
9051 | get_last_displayed_line (), | |
9052 | canonical, NULL, NULL); | |
9053 | return; | |
9054 | } | |
c906108c | 9055 | } |
f00aae0f | 9056 | |
c2f4122d | 9057 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9058 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9059 | } |
c906108c | 9060 | |
c906108c | 9061 | |
c3f6f71d | 9062 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9063 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9064 | |
b9362cc7 | 9065 | static void |
6c5b2ebe | 9066 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9067 | { |
6c5b2ebe PA |
9068 | for (auto &sal : sals) |
9069 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9070 | } |
9071 | ||
7a697b8d SS |
9072 | /* Fast tracepoints may have restrictions on valid locations. For |
9073 | instance, a fast tracepoint using a jump instead of a trap will | |
9074 | likely have to overwrite more bytes than a trap would, and so can | |
9075 | only be placed where the instruction is longer than the jump, or a | |
9076 | multi-instruction sequence does not have a jump into the middle of | |
9077 | it, etc. */ | |
9078 | ||
9079 | static void | |
9080 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9081 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9082 | { |
6c5b2ebe | 9083 | for (const auto &sal : sals) |
7a697b8d | 9084 | { |
f8eba3c6 TT |
9085 | struct gdbarch *sarch; |
9086 | ||
6c5b2ebe | 9087 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9088 | /* We fall back to GDBARCH if there is no architecture |
9089 | associated with SAL. */ | |
9090 | if (sarch == NULL) | |
9091 | sarch = gdbarch; | |
281d762b TT |
9092 | std::string msg; |
9093 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9094 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9095 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9096 | } |
9097 | } | |
9098 | ||
018d34a4 VP |
9099 | /* Given TOK, a string specification of condition and thread, as |
9100 | accepted by the 'break' command, extract the condition | |
9101 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9102 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9103 | If no condition is found, *COND_STRING is set to NULL. |
9104 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9105 | |
9106 | static void | |
bbc13ae3 | 9107 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9108 | char **cond_string, int *thread, int *task, |
9109 | char **rest) | |
018d34a4 VP |
9110 | { |
9111 | *cond_string = NULL; | |
9112 | *thread = -1; | |
ed1d1739 KS |
9113 | *task = 0; |
9114 | *rest = NULL; | |
9115 | ||
018d34a4 VP |
9116 | while (tok && *tok) |
9117 | { | |
bbc13ae3 | 9118 | const char *end_tok; |
018d34a4 | 9119 | int toklen; |
bbc13ae3 KS |
9120 | const char *cond_start = NULL; |
9121 | const char *cond_end = NULL; | |
cc59ec59 | 9122 | |
f1735a53 | 9123 | tok = skip_spaces (tok); |
e7e0cddf SS |
9124 | |
9125 | if ((*tok == '"' || *tok == ',') && rest) | |
9126 | { | |
9127 | *rest = savestring (tok, strlen (tok)); | |
9128 | return; | |
9129 | } | |
9130 | ||
f1735a53 | 9131 | end_tok = skip_to_space (tok); |
d634f2de | 9132 | |
018d34a4 | 9133 | toklen = end_tok - tok; |
d634f2de | 9134 | |
018d34a4 VP |
9135 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9136 | { | |
9137 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9138 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9139 | cond_end = tok; |
d634f2de | 9140 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9141 | } |
9142 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9143 | { | |
5d5658a1 PA |
9144 | const char *tmptok; |
9145 | struct thread_info *thr; | |
d634f2de | 9146 | |
018d34a4 | 9147 | tok = end_tok + 1; |
5d5658a1 | 9148 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9149 | if (tok == tmptok) |
9150 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9151 | *thread = thr->global_num; |
bbc13ae3 | 9152 | tok = tmptok; |
018d34a4 | 9153 | } |
4a306c9a JB |
9154 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9155 | { | |
9156 | char *tmptok; | |
9157 | ||
9158 | tok = end_tok + 1; | |
bbc13ae3 | 9159 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9160 | if (tok == tmptok) |
9161 | error (_("Junk after task keyword.")); | |
9162 | if (!valid_task_id (*task)) | |
b6199126 | 9163 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9164 | tok = tmptok; |
4a306c9a | 9165 | } |
e7e0cddf SS |
9166 | else if (rest) |
9167 | { | |
9168 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9169 | return; |
e7e0cddf | 9170 | } |
018d34a4 VP |
9171 | else |
9172 | error (_("Junk at end of arguments.")); | |
9173 | } | |
9174 | } | |
9175 | ||
0fb4aa4b PA |
9176 | /* Decode a static tracepoint marker spec. */ |
9177 | ||
6c5b2ebe | 9178 | static std::vector<symtab_and_line> |
f00aae0f | 9179 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9180 | { |
f00aae0f KS |
9181 | const char *p = &(*arg_p)[3]; |
9182 | const char *endp; | |
0fb4aa4b | 9183 | |
f1735a53 | 9184 | p = skip_spaces (p); |
0fb4aa4b | 9185 | |
f1735a53 | 9186 | endp = skip_to_space (p); |
0fb4aa4b | 9187 | |
81b1e71c | 9188 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9189 | |
5d9310c4 SM |
9190 | std::vector<static_tracepoint_marker> markers |
9191 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9192 | if (markers.empty ()) | |
81b1e71c TT |
9193 | error (_("No known static tracepoint marker named %s"), |
9194 | marker_str.c_str ()); | |
0fb4aa4b | 9195 | |
6c5b2ebe | 9196 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9197 | sals.reserve (markers.size ()); |
0fb4aa4b | 9198 | |
5d9310c4 | 9199 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9200 | { |
5d9310c4 SM |
9201 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9202 | sal.pc = marker.address; | |
6c5b2ebe | 9203 | sals.push_back (sal); |
5d9310c4 | 9204 | } |
0fb4aa4b | 9205 | |
0fb4aa4b PA |
9206 | *arg_p = endp; |
9207 | return sals; | |
9208 | } | |
9209 | ||
f00aae0f | 9210 | /* See breakpoint.h. */ |
0101ce28 | 9211 | |
8cdf0e15 VP |
9212 | int |
9213 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9214 | const struct event_location *location, |
9215 | const char *cond_string, | |
9216 | int thread, const char *extra_string, | |
f00aae0f | 9217 | int parse_extra, |
0fb4aa4b | 9218 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9219 | int ignore_count, |
9220 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9221 | const struct breakpoint_ops *ops, |
44f238bb PA |
9222 | int from_tty, int enabled, int internal, |
9223 | unsigned flags) | |
c3f6f71d | 9224 | { |
7efd8fc2 | 9225 | struct linespec_result canonical; |
0101ce28 | 9226 | int pending = 0; |
4a306c9a | 9227 | int task = 0; |
86b17b60 | 9228 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9229 | |
348d480f PA |
9230 | gdb_assert (ops != NULL); |
9231 | ||
f00aae0f KS |
9232 | /* If extra_string isn't useful, set it to NULL. */ |
9233 | if (extra_string != NULL && *extra_string == '\0') | |
9234 | extra_string = NULL; | |
9235 | ||
a70b8144 | 9236 | try |
b78a6381 | 9237 | { |
f00aae0f | 9238 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9239 | } |
230d2906 | 9240 | catch (const gdb_exception_error &e) |
0101ce28 | 9241 | { |
492d29ea PA |
9242 | /* If caller is interested in rc value from parse, set |
9243 | value. */ | |
9244 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9245 | { |
05ff989b AC |
9246 | /* If pending breakpoint support is turned off, throw |
9247 | error. */ | |
fa8d40ab JJ |
9248 | |
9249 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9250 | throw; |
723a2275 VP |
9251 | |
9252 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9253 | |
05ff989b AC |
9254 | /* If pending breakpoint support is auto query and the user |
9255 | selects no, then simply return the error code. */ | |
059fb39f | 9256 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9257 | && !nquery (_("Make %s pending on future shared library load? "), |
9258 | bptype_string (type_wanted))) | |
fd9b8c24 | 9259 | return 0; |
fa8d40ab | 9260 | |
05ff989b AC |
9261 | /* At this point, either the user was queried about setting |
9262 | a pending breakpoint and selected yes, or pending | |
9263 | breakpoint behavior is on and thus a pending breakpoint | |
9264 | is defaulted on behalf of the user. */ | |
f00aae0f | 9265 | pending = 1; |
0101ce28 | 9266 | } |
492d29ea | 9267 | else |
eedc3f4f | 9268 | throw; |
0101ce28 | 9269 | } |
492d29ea | 9270 | |
6c5b2ebe | 9271 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9272 | return 0; |
c3f6f71d | 9273 | |
c3f6f71d JM |
9274 | /* Resolve all line numbers to PC's and verify that the addresses |
9275 | are ok for the target. */ | |
0101ce28 | 9276 | if (!pending) |
f8eba3c6 | 9277 | { |
6c5b2ebe PA |
9278 | for (auto &lsal : canonical.lsals) |
9279 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9280 | } |
c3f6f71d | 9281 | |
7a697b8d | 9282 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9283 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9284 | { |
6c5b2ebe PA |
9285 | for (const auto &lsal : canonical.lsals) |
9286 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9287 | } |
7a697b8d | 9288 | |
c3f6f71d JM |
9289 | /* Verify that condition can be parsed, before setting any |
9290 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9291 | breakpoint. */ |
0101ce28 | 9292 | if (!pending) |
c3f6f71d | 9293 | { |
e1e01040 PA |
9294 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9295 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9296 | ||
f00aae0f | 9297 | if (parse_extra) |
72b2ff0e | 9298 | { |
0878d0fa | 9299 | char *rest; |
e1e01040 | 9300 | char *cond; |
52d361e1 | 9301 | |
6c5b2ebe | 9302 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9303 | |
0878d0fa YQ |
9304 | /* Here we only parse 'arg' to separate condition |
9305 | from thread number, so parsing in context of first | |
9306 | sal is OK. When setting the breakpoint we'll | |
9307 | re-parse it in context of each sal. */ | |
9308 | ||
6c5b2ebe | 9309 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9310 | &cond, &thread, &task, &rest); |
9311 | cond_string_copy.reset (cond); | |
9312 | extra_string_copy.reset (rest); | |
72b2ff0e | 9313 | } |
2f069f6f | 9314 | else |
72b2ff0e | 9315 | { |
f00aae0f KS |
9316 | if (type_wanted != bp_dprintf |
9317 | && extra_string != NULL && *extra_string != '\0') | |
9318 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9319 | |
9320 | /* Create a private copy of condition string. */ | |
9321 | if (cond_string) | |
e1e01040 | 9322 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9323 | /* Create a private copy of any extra string. */ |
9324 | if (extra_string) | |
e1e01040 | 9325 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9326 | } |
0fb4aa4b | 9327 | |
52d361e1 | 9328 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9329 | std::move (cond_string_copy), |
9330 | std::move (extra_string_copy), | |
9331 | type_wanted, | |
d9b3f62e PA |
9332 | tempflag ? disp_del : disp_donttouch, |
9333 | thread, task, ignore_count, ops, | |
44f238bb | 9334 | from_tty, enabled, internal, flags); |
c906108c | 9335 | } |
0101ce28 JJ |
9336 | else |
9337 | { | |
a5e364af | 9338 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9339 | |
a5e364af | 9340 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9341 | b->location = copy_event_location (location); |
bfccc43c | 9342 | |
f00aae0f KS |
9343 | if (parse_extra) |
9344 | b->cond_string = NULL; | |
e12c7713 MK |
9345 | else |
9346 | { | |
9347 | /* Create a private copy of condition string. */ | |
e1e01040 | 9348 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9349 | b->thread = thread; |
e12c7713 | 9350 | } |
f00aae0f KS |
9351 | |
9352 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9353 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9354 | b->ignore_count = ignore_count; |
0101ce28 | 9355 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9356 | b->condition_not_parsed = 1; |
41447f92 | 9357 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9358 | if ((type_wanted != bp_breakpoint |
9359 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9360 | b->pspace = current_program_space; |
8bea4e01 | 9361 | |
b270e6f9 | 9362 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9363 | } |
9364 | ||
6c5b2ebe | 9365 | if (canonical.lsals.size () > 1) |
95a42b64 | 9366 | { |
3e43a32a MS |
9367 | warning (_("Multiple breakpoints were set.\nUse the " |
9368 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9369 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9370 | } |
9371 | ||
44702360 | 9372 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9373 | |
9374 | return 1; | |
c3f6f71d | 9375 | } |
c906108c | 9376 | |
348d480f | 9377 | /* Set a breakpoint. |
72b2ff0e VP |
9378 | ARG is a string describing breakpoint address, |
9379 | condition, and thread. | |
9380 | FLAG specifies if a breakpoint is hardware on, | |
9381 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9382 | and BP_TEMPFLAG. */ | |
348d480f | 9383 | |
98deb0da | 9384 | static void |
f2fc3015 | 9385 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9386 | { |
72b2ff0e | 9387 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9388 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9389 | ? bp_hardware_breakpoint | |
9390 | : bp_breakpoint); | |
55aa24fb | 9391 | struct breakpoint_ops *ops; |
f00aae0f | 9392 | |
ffc2605c | 9393 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9394 | |
9395 | /* Matching breakpoints on probes. */ | |
5b56227b | 9396 | if (location != NULL |
ffc2605c | 9397 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9398 | ops = &bkpt_probe_breakpoint_ops; |
9399 | else | |
9400 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9401 | |
8cdf0e15 | 9402 | create_breakpoint (get_current_arch (), |
ffc2605c | 9403 | location.get (), |
f00aae0f | 9404 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9405 | tempflag, type_wanted, |
8cdf0e15 VP |
9406 | 0 /* Ignore count */, |
9407 | pending_break_support, | |
55aa24fb | 9408 | ops, |
8cdf0e15 | 9409 | from_tty, |
84f4c1fe | 9410 | 1 /* enabled */, |
44f238bb PA |
9411 | 0 /* internal */, |
9412 | 0); | |
c906108c SS |
9413 | } |
9414 | ||
c906108c SS |
9415 | /* Helper function for break_command_1 and disassemble_command. */ |
9416 | ||
9417 | void | |
fba45db2 | 9418 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9419 | { |
9420 | CORE_ADDR pc; | |
9421 | ||
9422 | if (sal->pc == 0 && sal->symtab != NULL) | |
9423 | { | |
9424 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9425 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9426 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9427 | sal->pc = pc; |
6a048695 | 9428 | |
4a64f543 MS |
9429 | /* If this SAL corresponds to a breakpoint inserted using a line |
9430 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9431 | if (sal->explicit_line) |
059acae7 | 9432 | skip_prologue_sal (sal); |
c906108c SS |
9433 | } |
9434 | ||
9435 | if (sal->section == 0 && sal->symtab != NULL) | |
9436 | { | |
346d1dfe | 9437 | const struct blockvector *bv; |
3977b71f | 9438 | const struct block *b; |
c5aa993b | 9439 | struct symbol *sym; |
c906108c | 9440 | |
43f3e411 DE |
9441 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9442 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9443 | if (bv != NULL) |
9444 | { | |
7f0df278 | 9445 | sym = block_linkage_function (b); |
c906108c SS |
9446 | if (sym != NULL) |
9447 | { | |
eb822aa6 DE |
9448 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9449 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9450 | sym); | |
c906108c SS |
9451 | } |
9452 | else | |
9453 | { | |
4a64f543 MS |
9454 | /* It really is worthwhile to have the section, so we'll |
9455 | just have to look harder. This case can be executed | |
9456 | if we have line numbers but no functions (as can | |
9457 | happen in assembly source). */ | |
c906108c | 9458 | |
5ed8105e | 9459 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9460 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9461 | |
5ed8105e | 9462 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9463 | if (msym.minsym) |
efd66ac6 | 9464 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9465 | } |
9466 | } | |
9467 | } | |
9468 | } | |
9469 | ||
9470 | void | |
0b39b52e | 9471 | break_command (const char *arg, int from_tty) |
c906108c | 9472 | { |
db107f19 | 9473 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9474 | } |
9475 | ||
c906108c | 9476 | void |
0b39b52e | 9477 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9478 | { |
db107f19 | 9479 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9480 | } |
9481 | ||
c906108c | 9482 | static void |
0b39b52e | 9483 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9484 | { |
db107f19 | 9485 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9486 | } |
9487 | ||
9488 | static void | |
0b39b52e | 9489 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9490 | { |
db107f19 | 9491 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9492 | } |
9493 | ||
9494 | static void | |
ee7ddd71 | 9495 | stop_command (const char *arg, int from_tty) |
c906108c | 9496 | { |
a3f17187 | 9497 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9498 | Usage: stop in <function | address>\n\ |
a3f17187 | 9499 | stop at <line>\n")); |
c906108c SS |
9500 | } |
9501 | ||
9502 | static void | |
4495129a | 9503 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9504 | { |
9505 | int badInput = 0; | |
9506 | ||
c5aa993b | 9507 | if (arg == (char *) NULL) |
c906108c SS |
9508 | badInput = 1; |
9509 | else if (*arg != '*') | |
9510 | { | |
4495129a | 9511 | const char *argptr = arg; |
c906108c SS |
9512 | int hasColon = 0; |
9513 | ||
4a64f543 | 9514 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9515 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9516 | function/method name. */ |
c906108c | 9517 | while (*argptr && !hasColon) |
c5aa993b JM |
9518 | { |
9519 | hasColon = (*argptr == ':'); | |
9520 | argptr++; | |
9521 | } | |
c906108c SS |
9522 | |
9523 | if (hasColon) | |
c5aa993b | 9524 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9525 | else |
c5aa993b | 9526 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9527 | } |
9528 | ||
9529 | if (badInput) | |
a3f17187 | 9530 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9531 | else |
db107f19 | 9532 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9533 | } |
9534 | ||
9535 | static void | |
4495129a | 9536 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9537 | { |
9538 | int badInput = 0; | |
9539 | ||
c5aa993b | 9540 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9541 | badInput = 1; |
9542 | else | |
9543 | { | |
4495129a | 9544 | const char *argptr = arg; |
c906108c SS |
9545 | int hasColon = 0; |
9546 | ||
4a64f543 MS |
9547 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9548 | it is probably a line number. */ | |
c906108c | 9549 | while (*argptr && !hasColon) |
c5aa993b JM |
9550 | { |
9551 | hasColon = (*argptr == ':'); | |
9552 | argptr++; | |
9553 | } | |
c906108c SS |
9554 | |
9555 | if (hasColon) | |
c5aa993b | 9556 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9557 | else |
c5aa993b | 9558 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9559 | } |
9560 | ||
9561 | if (badInput) | |
65e65158 | 9562 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9563 | else |
db107f19 | 9564 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9565 | } |
9566 | ||
e7e0cddf SS |
9567 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9568 | with a prewired command list consisting of a single output command, | |
9569 | built from extra arguments supplied on the dprintf command | |
9570 | line. */ | |
9571 | ||
da821c7b | 9572 | static void |
0b39b52e | 9573 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9574 | { |
ffc2605c | 9575 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9576 | |
9577 | /* If non-NULL, ARG should have been advanced past the location; | |
9578 | the next character must be ','. */ | |
9579 | if (arg != NULL) | |
9580 | { | |
9581 | if (arg[0] != ',' || arg[1] == '\0') | |
9582 | error (_("Format string required")); | |
9583 | else | |
9584 | { | |
9585 | /* Skip the comma. */ | |
9586 | ++arg; | |
9587 | } | |
9588 | } | |
9589 | ||
e7e0cddf | 9590 | create_breakpoint (get_current_arch (), |
ffc2605c | 9591 | location.get (), |
f00aae0f | 9592 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9593 | 0, bp_dprintf, |
9594 | 0 /* Ignore count */, | |
9595 | pending_break_support, | |
9596 | &dprintf_breakpoint_ops, | |
9597 | from_tty, | |
9598 | 1 /* enabled */, | |
9599 | 0 /* internal */, | |
9600 | 0); | |
9601 | } | |
9602 | ||
d3ce09f5 | 9603 | static void |
0b39b52e | 9604 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9605 | { |
9606 | error (_("May only run agent-printf on the target")); | |
9607 | } | |
9608 | ||
f1310107 TJB |
9609 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9610 | ranged breakpoints. */ | |
9611 | ||
9612 | static int | |
9613 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9614 | const address_space *aspace, |
09ac7c10 TT |
9615 | CORE_ADDR bp_addr, |
9616 | const struct target_waitstatus *ws) | |
f1310107 | 9617 | { |
09ac7c10 | 9618 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9619 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9620 | return 0; |
9621 | ||
f1310107 TJB |
9622 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9623 | bl->length, aspace, bp_addr); | |
9624 | } | |
9625 | ||
9626 | /* Implement the "resources_needed" breakpoint_ops method for | |
9627 | ranged breakpoints. */ | |
9628 | ||
9629 | static int | |
9630 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9631 | { | |
9632 | return target_ranged_break_num_registers (); | |
9633 | } | |
9634 | ||
9635 | /* Implement the "print_it" breakpoint_ops method for | |
9636 | ranged breakpoints. */ | |
9637 | ||
9638 | static enum print_stop_action | |
348d480f | 9639 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9640 | { |
348d480f | 9641 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9642 | struct bp_location *bl = b->loc; |
79a45e25 | 9643 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9644 | |
9645 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9646 | ||
9647 | /* Ranged breakpoints have only one location. */ | |
9648 | gdb_assert (bl && bl->next == NULL); | |
9649 | ||
9650 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9651 | |
9652 | maybe_print_thread_hit_breakpoint (uiout); | |
9653 | ||
f1310107 | 9654 | if (b->disposition == disp_del) |
112e8700 | 9655 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9656 | else |
112e8700 SM |
9657 | uiout->text ("Ranged breakpoint "); |
9658 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9659 | { |
112e8700 | 9660 | uiout->field_string ("reason", |
f1310107 | 9661 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9662 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9663 | } |
112e8700 SM |
9664 | uiout->field_int ("bkptno", b->number); |
9665 | uiout->text (", "); | |
f1310107 TJB |
9666 | |
9667 | return PRINT_SRC_AND_LOC; | |
9668 | } | |
9669 | ||
9670 | /* Implement the "print_one" breakpoint_ops method for | |
9671 | ranged breakpoints. */ | |
9672 | ||
9673 | static void | |
9674 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9675 | struct bp_location **last_loc) | |
9676 | { | |
9677 | struct bp_location *bl = b->loc; | |
9678 | struct value_print_options opts; | |
79a45e25 | 9679 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9680 | |
9681 | /* Ranged breakpoints have only one location. */ | |
9682 | gdb_assert (bl && bl->next == NULL); | |
9683 | ||
9684 | get_user_print_options (&opts); | |
9685 | ||
9686 | if (opts.addressprint) | |
9687 | /* We don't print the address range here, it will be printed later | |
9688 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9689 | uiout->field_skip ("addr"); |
f1310107 TJB |
9690 | annotate_field (5); |
9691 | print_breakpoint_location (b, bl); | |
9692 | *last_loc = bl; | |
9693 | } | |
9694 | ||
9695 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9696 | ranged breakpoints. */ | |
9697 | ||
9698 | static void | |
9699 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9700 | struct ui_out *uiout) | |
9701 | { | |
9702 | CORE_ADDR address_start, address_end; | |
9703 | struct bp_location *bl = b->loc; | |
d7e74731 | 9704 | string_file stb; |
f1310107 TJB |
9705 | |
9706 | gdb_assert (bl); | |
9707 | ||
9708 | address_start = bl->address; | |
9709 | address_end = address_start + bl->length - 1; | |
9710 | ||
112e8700 | 9711 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9712 | stb.printf ("[%s, %s]", |
9713 | print_core_address (bl->gdbarch, address_start), | |
9714 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9715 | uiout->field_stream ("addr", stb); |
9716 | uiout->text ("\n"); | |
f1310107 TJB |
9717 | } |
9718 | ||
9719 | /* Implement the "print_mention" breakpoint_ops method for | |
9720 | ranged breakpoints. */ | |
9721 | ||
9722 | static void | |
9723 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9724 | { | |
9725 | struct bp_location *bl = b->loc; | |
79a45e25 | 9726 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9727 | |
9728 | gdb_assert (bl); | |
9729 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9730 | ||
2d33446d TT |
9731 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9732 | b->number, paddress (bl->gdbarch, bl->address), | |
9733 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9734 | } |
9735 | ||
9736 | /* Implement the "print_recreate" breakpoint_ops method for | |
9737 | ranged breakpoints. */ | |
9738 | ||
9739 | static void | |
9740 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9741 | { | |
f00aae0f | 9742 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9743 | event_location_to_string (b->location.get ()), |
9744 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9745 | print_recreate_thread (b, fp); |
f1310107 TJB |
9746 | } |
9747 | ||
9748 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9749 | ||
2060206e | 9750 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9751 | |
9752 | /* Find the address where the end of the breakpoint range should be | |
9753 | placed, given the SAL of the end of the range. This is so that if | |
9754 | the user provides a line number, the end of the range is set to the | |
9755 | last instruction of the given line. */ | |
9756 | ||
9757 | static CORE_ADDR | |
9758 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9759 | { | |
9760 | CORE_ADDR end; | |
9761 | ||
9762 | /* If the user provided a PC value, use it. Otherwise, | |
9763 | find the address of the end of the given location. */ | |
9764 | if (sal.explicit_pc) | |
9765 | end = sal.pc; | |
9766 | else | |
9767 | { | |
9768 | int ret; | |
9769 | CORE_ADDR start; | |
9770 | ||
9771 | ret = find_line_pc_range (sal, &start, &end); | |
9772 | if (!ret) | |
9773 | error (_("Could not find location of the end of the range.")); | |
9774 | ||
9775 | /* find_line_pc_range returns the start of the next line. */ | |
9776 | end--; | |
9777 | } | |
9778 | ||
9779 | return end; | |
9780 | } | |
9781 | ||
9782 | /* Implement the "break-range" CLI command. */ | |
9783 | ||
9784 | static void | |
0b39b52e | 9785 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9786 | { |
f2fc3015 | 9787 | const char *arg_start; |
f1310107 TJB |
9788 | struct linespec_result canonical_start, canonical_end; |
9789 | int bp_count, can_use_bp, length; | |
9790 | CORE_ADDR end; | |
9791 | struct breakpoint *b; | |
f1310107 TJB |
9792 | |
9793 | /* We don't support software ranged breakpoints. */ | |
9794 | if (target_ranged_break_num_registers () < 0) | |
9795 | error (_("This target does not support hardware ranged breakpoints.")); | |
9796 | ||
9797 | bp_count = hw_breakpoint_used_count (); | |
9798 | bp_count += target_ranged_break_num_registers (); | |
9799 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9800 | bp_count, 0); | |
9801 | if (can_use_bp < 0) | |
9802 | error (_("Hardware breakpoints used exceeds limit.")); | |
9803 | ||
f8eba3c6 | 9804 | arg = skip_spaces (arg); |
f1310107 TJB |
9805 | if (arg == NULL || arg[0] == '\0') |
9806 | error(_("No address range specified.")); | |
9807 | ||
f8eba3c6 | 9808 | arg_start = arg; |
ffc2605c TT |
9809 | event_location_up start_location = string_to_event_location (&arg, |
9810 | current_language); | |
9811 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9812 | |
9813 | if (arg[0] != ',') | |
9814 | error (_("Too few arguments.")); | |
6c5b2ebe | 9815 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9816 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9817 | |
6c5b2ebe | 9818 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9819 | |
6c5b2ebe PA |
9820 | if (canonical_start.lsals.size () > 1 |
9821 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9822 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9823 | ||
6c5b2ebe | 9824 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9825 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9826 | |
9827 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9828 | arg = skip_spaces (arg); |
f1310107 TJB |
9829 | |
9830 | /* Parse the end location. */ | |
9831 | ||
f1310107 TJB |
9832 | arg_start = arg; |
9833 | ||
f8eba3c6 | 9834 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9835 | parse_breakpoint_sals because we need to specify the start location's |
9836 | symtab and line as the default symtab and line for the end of the | |
9837 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9838 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9839 | event_location_up end_location = string_to_event_location (&arg, |
9840 | current_language); | |
9841 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9842 | sal_start.symtab, sal_start.line, |
9843 | &canonical_end, NULL, NULL); | |
9844 | ||
6c5b2ebe | 9845 | if (canonical_end.lsals.empty ()) |
f1310107 | 9846 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9847 | |
6c5b2ebe PA |
9848 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9849 | if (canonical_end.lsals.size () > 1 | |
9850 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9851 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9852 | ||
6c5b2ebe | 9853 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9854 | |
9855 | end = find_breakpoint_range_end (sal_end); | |
9856 | if (sal_start.pc > end) | |
177b42fe | 9857 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9858 | |
9859 | length = end - sal_start.pc + 1; | |
9860 | if (length < 0) | |
9861 | /* Length overflowed. */ | |
9862 | error (_("Address range too large.")); | |
9863 | else if (length == 1) | |
9864 | { | |
9865 | /* This range is simple enough to be handled by | |
9866 | the `hbreak' command. */ | |
81b1e71c | 9867 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9868 | |
9869 | return; | |
9870 | } | |
9871 | ||
9872 | /* Now set up the breakpoint. */ | |
9873 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9874 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9875 | set_breakpoint_count (breakpoint_count + 1); |
9876 | b->number = breakpoint_count; | |
9877 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9878 | b->location = std::move (start_location); |
9879 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9880 | b->loc->length = length; |
9881 | ||
f1310107 | 9882 | mention (b); |
76727919 | 9883 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9884 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9885 | } |
9886 | ||
4a64f543 MS |
9887 | /* Return non-zero if EXP is verified as constant. Returned zero |
9888 | means EXP is variable. Also the constant detection may fail for | |
9889 | some constant expressions and in such case still falsely return | |
9890 | zero. */ | |
2e6e3d9c | 9891 | |
65d79d4b SDJ |
9892 | static int |
9893 | watchpoint_exp_is_const (const struct expression *exp) | |
9894 | { | |
9895 | int i = exp->nelts; | |
9896 | ||
9897 | while (i > 0) | |
9898 | { | |
9899 | int oplenp, argsp; | |
9900 | ||
9901 | /* We are only interested in the descriptor of each element. */ | |
9902 | operator_length (exp, i, &oplenp, &argsp); | |
9903 | i -= oplenp; | |
9904 | ||
9905 | switch (exp->elts[i].opcode) | |
9906 | { | |
9907 | case BINOP_ADD: | |
9908 | case BINOP_SUB: | |
9909 | case BINOP_MUL: | |
9910 | case BINOP_DIV: | |
9911 | case BINOP_REM: | |
9912 | case BINOP_MOD: | |
9913 | case BINOP_LSH: | |
9914 | case BINOP_RSH: | |
9915 | case BINOP_LOGICAL_AND: | |
9916 | case BINOP_LOGICAL_OR: | |
9917 | case BINOP_BITWISE_AND: | |
9918 | case BINOP_BITWISE_IOR: | |
9919 | case BINOP_BITWISE_XOR: | |
9920 | case BINOP_EQUAL: | |
9921 | case BINOP_NOTEQUAL: | |
9922 | case BINOP_LESS: | |
9923 | case BINOP_GTR: | |
9924 | case BINOP_LEQ: | |
9925 | case BINOP_GEQ: | |
9926 | case BINOP_REPEAT: | |
9927 | case BINOP_COMMA: | |
9928 | case BINOP_EXP: | |
9929 | case BINOP_MIN: | |
9930 | case BINOP_MAX: | |
9931 | case BINOP_INTDIV: | |
9932 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9933 | case TERNOP_COND: |
9934 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9935 | |
9936 | case OP_LONG: | |
edd079d9 | 9937 | case OP_FLOAT: |
65d79d4b SDJ |
9938 | case OP_LAST: |
9939 | case OP_COMPLEX: | |
9940 | case OP_STRING: | |
65d79d4b SDJ |
9941 | case OP_ARRAY: |
9942 | case OP_TYPE: | |
608b4967 TT |
9943 | case OP_TYPEOF: |
9944 | case OP_DECLTYPE: | |
6e72ca20 | 9945 | case OP_TYPEID: |
65d79d4b SDJ |
9946 | case OP_NAME: |
9947 | case OP_OBJC_NSSTRING: | |
9948 | ||
9949 | case UNOP_NEG: | |
9950 | case UNOP_LOGICAL_NOT: | |
9951 | case UNOP_COMPLEMENT: | |
9952 | case UNOP_ADDR: | |
9953 | case UNOP_HIGH: | |
aeaa2474 | 9954 | case UNOP_CAST: |
9eaf6705 TT |
9955 | |
9956 | case UNOP_CAST_TYPE: | |
9957 | case UNOP_REINTERPRET_CAST: | |
9958 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9959 | /* Unary, binary and ternary operators: We have to check |
9960 | their operands. If they are constant, then so is the | |
9961 | result of that operation. For instance, if A and B are | |
9962 | determined to be constants, then so is "A + B". | |
9963 | ||
9964 | UNOP_IND is one exception to the rule above, because the | |
9965 | value of *ADDR is not necessarily a constant, even when | |
9966 | ADDR is. */ | |
65d79d4b SDJ |
9967 | break; |
9968 | ||
9969 | case OP_VAR_VALUE: | |
9970 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9971 | |
65d79d4b | 9972 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9973 | possible that a buggy compiler could mark a variable as |
9974 | constant even when it is not, and TYPE_CONST would return | |
9975 | true in this case, while SYMBOL_CLASS wouldn't. | |
9976 | ||
9977 | We also have to check for function symbols because they | |
9978 | are always constant. */ | |
65d79d4b SDJ |
9979 | { |
9980 | struct symbol *s = exp->elts[i + 2].symbol; | |
9981 | ||
9982 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9983 | && SYMBOL_CLASS (s) != LOC_CONST | |
9984 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9985 | return 0; | |
9986 | break; | |
9987 | } | |
9988 | ||
9989 | /* The default action is to return 0 because we are using | |
9990 | the optimistic approach here: If we don't know something, | |
9991 | then it is not a constant. */ | |
9992 | default: | |
9993 | return 0; | |
9994 | } | |
9995 | } | |
9996 | ||
9997 | return 1; | |
9998 | } | |
9999 | ||
c1fc2657 | 10000 | /* Watchpoint destructor. */ |
3a5c3e22 | 10001 | |
c1fc2657 | 10002 | watchpoint::~watchpoint () |
3a5c3e22 | 10003 | { |
c1fc2657 SM |
10004 | xfree (this->exp_string); |
10005 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10006 | } |
10007 | ||
348d480f PA |
10008 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10009 | ||
10010 | static void | |
10011 | re_set_watchpoint (struct breakpoint *b) | |
10012 | { | |
3a5c3e22 PA |
10013 | struct watchpoint *w = (struct watchpoint *) b; |
10014 | ||
348d480f PA |
10015 | /* Watchpoint can be either on expression using entirely global |
10016 | variables, or it can be on local variables. | |
10017 | ||
10018 | Watchpoints of the first kind are never auto-deleted, and even | |
10019 | persist across program restarts. Since they can use variables | |
10020 | from shared libraries, we need to reparse expression as libraries | |
10021 | are loaded and unloaded. | |
10022 | ||
10023 | Watchpoints on local variables can also change meaning as result | |
10024 | of solib event. For example, if a watchpoint uses both a local | |
10025 | and a global variables in expression, it's a local watchpoint, | |
10026 | but unloading of a shared library will make the expression | |
10027 | invalid. This is not a very common use case, but we still | |
10028 | re-evaluate expression, to avoid surprises to the user. | |
10029 | ||
10030 | Note that for local watchpoints, we re-evaluate it only if | |
10031 | watchpoints frame id is still valid. If it's not, it means the | |
10032 | watchpoint is out of scope and will be deleted soon. In fact, | |
10033 | I'm not sure we'll ever be called in this case. | |
10034 | ||
10035 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10036 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10037 | |
3a5c3e22 PA |
10038 | Don't do anything about disabled watchpoints, since they will be |
10039 | reevaluated again when enabled. */ | |
10040 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10041 | } |
10042 | ||
77b06cd7 TJB |
10043 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10044 | ||
10045 | static int | |
10046 | insert_watchpoint (struct bp_location *bl) | |
10047 | { | |
3a5c3e22 PA |
10048 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10049 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10050 | |
10051 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10052 | w->cond_exp.get ()); |
77b06cd7 TJB |
10053 | } |
10054 | ||
10055 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10056 | ||
10057 | static int | |
73971819 | 10058 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10059 | { |
3a5c3e22 PA |
10060 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10061 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10062 | |
10063 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10064 | w->cond_exp.get ()); |
e09342b5 TJB |
10065 | } |
10066 | ||
e09342b5 | 10067 | static int |
348d480f | 10068 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10069 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10070 | const struct target_waitstatus *ws) |
e09342b5 | 10071 | { |
348d480f | 10072 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10073 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10074 | |
348d480f PA |
10075 | /* Continuable hardware watchpoints are treated as non-existent if the |
10076 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10077 | some data address). Otherwise gdb won't stop on a break instruction | |
10078 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10079 | been defined. Also skip watchpoints which we know did not trigger | |
10080 | (did not match the data address). */ | |
10081 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10082 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10083 | return 0; |
9c06b0b4 | 10084 | |
348d480f | 10085 | return 1; |
9c06b0b4 TJB |
10086 | } |
10087 | ||
348d480f PA |
10088 | static void |
10089 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10090 | { |
348d480f | 10091 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10092 | |
348d480f | 10093 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10094 | } |
10095 | ||
10096 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10097 | hardware watchpoints. */ |
9c06b0b4 TJB |
10098 | |
10099 | static int | |
348d480f | 10100 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10101 | { |
3a5c3e22 PA |
10102 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10103 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10104 | |
10105 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10106 | } |
10107 | ||
10108 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10109 | hardware watchpoints. */ |
9c06b0b4 TJB |
10110 | |
10111 | static int | |
348d480f | 10112 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10113 | { |
efa80663 PA |
10114 | /* Read and access watchpoints only work with hardware support. */ |
10115 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10116 | } |
10117 | ||
9c06b0b4 | 10118 | static enum print_stop_action |
348d480f | 10119 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10120 | { |
348d480f | 10121 | struct breakpoint *b; |
348d480f | 10122 | enum print_stop_action result; |
3a5c3e22 | 10123 | struct watchpoint *w; |
79a45e25 | 10124 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10125 | |
10126 | gdb_assert (bs->bp_location_at != NULL); | |
10127 | ||
348d480f | 10128 | b = bs->breakpoint_at; |
3a5c3e22 | 10129 | w = (struct watchpoint *) b; |
348d480f | 10130 | |
f303dbd6 PA |
10131 | annotate_watchpoint (b->number); |
10132 | maybe_print_thread_hit_breakpoint (uiout); | |
10133 | ||
d7e74731 PA |
10134 | string_file stb; |
10135 | ||
76f9c9cf | 10136 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10137 | switch (b->type) |
10138 | { | |
348d480f | 10139 | case bp_watchpoint: |
9c06b0b4 | 10140 | case bp_hardware_watchpoint: |
112e8700 SM |
10141 | if (uiout->is_mi_like_p ()) |
10142 | uiout->field_string | |
10143 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10144 | mention (b); |
76f9c9cf | 10145 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10146 | uiout->text ("\nOld value = "); |
850645cf | 10147 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10148 | uiout->field_stream ("old", stb); |
10149 | uiout->text ("\nNew value = "); | |
850645cf | 10150 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10151 | uiout->field_stream ("new", stb); |
10152 | uiout->text ("\n"); | |
348d480f PA |
10153 | /* More than one watchpoint may have been triggered. */ |
10154 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10155 | break; |
10156 | ||
10157 | case bp_read_watchpoint: | |
112e8700 SM |
10158 | if (uiout->is_mi_like_p ()) |
10159 | uiout->field_string | |
10160 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10161 | mention (b); |
76f9c9cf | 10162 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10163 | uiout->text ("\nValue = "); |
850645cf | 10164 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10165 | uiout->field_stream ("value", stb); |
10166 | uiout->text ("\n"); | |
348d480f | 10167 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10168 | break; |
10169 | ||
10170 | case bp_access_watchpoint: | |
348d480f PA |
10171 | if (bs->old_val != NULL) |
10172 | { | |
112e8700 SM |
10173 | if (uiout->is_mi_like_p ()) |
10174 | uiout->field_string | |
10175 | ("reason", | |
348d480f PA |
10176 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10177 | mention (b); | |
76f9c9cf | 10178 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10179 | uiout->text ("\nOld value = "); |
850645cf | 10180 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10181 | uiout->field_stream ("old", stb); |
10182 | uiout->text ("\nNew value = "); | |
348d480f PA |
10183 | } |
10184 | else | |
10185 | { | |
10186 | mention (b); | |
112e8700 SM |
10187 | if (uiout->is_mi_like_p ()) |
10188 | uiout->field_string | |
10189 | ("reason", | |
348d480f | 10190 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10191 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10192 | uiout->text ("\nValue = "); |
348d480f | 10193 | } |
850645cf | 10194 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10195 | uiout->field_stream ("new", stb); |
10196 | uiout->text ("\n"); | |
348d480f | 10197 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10198 | break; |
10199 | default: | |
348d480f | 10200 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10201 | } |
10202 | ||
348d480f PA |
10203 | return result; |
10204 | } | |
10205 | ||
10206 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10207 | watchpoints. */ | |
10208 | ||
10209 | static void | |
10210 | print_mention_watchpoint (struct breakpoint *b) | |
10211 | { | |
3a5c3e22 | 10212 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10213 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10214 | const char *tuple_name; |
348d480f PA |
10215 | |
10216 | switch (b->type) | |
10217 | { | |
10218 | case bp_watchpoint: | |
112e8700 | 10219 | uiout->text ("Watchpoint "); |
46b9c129 | 10220 | tuple_name = "wpt"; |
348d480f PA |
10221 | break; |
10222 | case bp_hardware_watchpoint: | |
112e8700 | 10223 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10224 | tuple_name = "wpt"; |
348d480f PA |
10225 | break; |
10226 | case bp_read_watchpoint: | |
112e8700 | 10227 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10228 | tuple_name = "hw-rwpt"; |
348d480f PA |
10229 | break; |
10230 | case bp_access_watchpoint: | |
112e8700 | 10231 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10232 | tuple_name = "hw-awpt"; |
348d480f PA |
10233 | break; |
10234 | default: | |
10235 | internal_error (__FILE__, __LINE__, | |
10236 | _("Invalid hardware watchpoint type.")); | |
10237 | } | |
10238 | ||
46b9c129 | 10239 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10240 | uiout->field_int ("number", b->number); |
10241 | uiout->text (": "); | |
10242 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10243 | } |
10244 | ||
10245 | /* Implement the "print_recreate" breakpoint_ops method for | |
10246 | watchpoints. */ | |
10247 | ||
10248 | static void | |
10249 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10250 | { | |
3a5c3e22 PA |
10251 | struct watchpoint *w = (struct watchpoint *) b; |
10252 | ||
348d480f PA |
10253 | switch (b->type) |
10254 | { | |
10255 | case bp_watchpoint: | |
10256 | case bp_hardware_watchpoint: | |
10257 | fprintf_unfiltered (fp, "watch"); | |
10258 | break; | |
10259 | case bp_read_watchpoint: | |
10260 | fprintf_unfiltered (fp, "rwatch"); | |
10261 | break; | |
10262 | case bp_access_watchpoint: | |
10263 | fprintf_unfiltered (fp, "awatch"); | |
10264 | break; | |
10265 | default: | |
10266 | internal_error (__FILE__, __LINE__, | |
10267 | _("Invalid watchpoint type.")); | |
10268 | } | |
10269 | ||
3a5c3e22 | 10270 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10271 | print_recreate_thread (b, fp); |
348d480f PA |
10272 | } |
10273 | ||
427cd150 TT |
10274 | /* Implement the "explains_signal" breakpoint_ops method for |
10275 | watchpoints. */ | |
10276 | ||
47591c29 | 10277 | static int |
427cd150 TT |
10278 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10279 | { | |
10280 | /* A software watchpoint cannot cause a signal other than | |
10281 | GDB_SIGNAL_TRAP. */ | |
10282 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10283 | return 0; |
427cd150 | 10284 | |
47591c29 | 10285 | return 1; |
427cd150 TT |
10286 | } |
10287 | ||
348d480f PA |
10288 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10289 | ||
2060206e | 10290 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10291 | |
10292 | /* Implement the "insert" breakpoint_ops method for | |
10293 | masked hardware watchpoints. */ | |
10294 | ||
10295 | static int | |
10296 | insert_masked_watchpoint (struct bp_location *bl) | |
10297 | { | |
3a5c3e22 PA |
10298 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10299 | ||
10300 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10301 | bl->watchpoint_type); |
10302 | } | |
10303 | ||
10304 | /* Implement the "remove" breakpoint_ops method for | |
10305 | masked hardware watchpoints. */ | |
10306 | ||
10307 | static int | |
73971819 | 10308 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10309 | { |
3a5c3e22 PA |
10310 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10311 | ||
10312 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10313 | bl->watchpoint_type); |
10314 | } | |
10315 | ||
10316 | /* Implement the "resources_needed" breakpoint_ops method for | |
10317 | masked hardware watchpoints. */ | |
10318 | ||
10319 | static int | |
10320 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10321 | { | |
3a5c3e22 PA |
10322 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10323 | ||
10324 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10325 | } |
10326 | ||
10327 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10328 | masked hardware watchpoints. */ | |
10329 | ||
10330 | static int | |
10331 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10332 | { | |
10333 | return 0; | |
10334 | } | |
10335 | ||
10336 | /* Implement the "print_it" breakpoint_ops method for | |
10337 | masked hardware watchpoints. */ | |
10338 | ||
10339 | static enum print_stop_action | |
10340 | print_it_masked_watchpoint (bpstat bs) | |
10341 | { | |
10342 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10343 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10344 | |
10345 | /* Masked watchpoints have only one location. */ | |
10346 | gdb_assert (b->loc && b->loc->next == NULL); | |
10347 | ||
f303dbd6 PA |
10348 | annotate_watchpoint (b->number); |
10349 | maybe_print_thread_hit_breakpoint (uiout); | |
10350 | ||
348d480f PA |
10351 | switch (b->type) |
10352 | { | |
10353 | case bp_hardware_watchpoint: | |
112e8700 SM |
10354 | if (uiout->is_mi_like_p ()) |
10355 | uiout->field_string | |
10356 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10357 | break; |
10358 | ||
10359 | case bp_read_watchpoint: | |
112e8700 SM |
10360 | if (uiout->is_mi_like_p ()) |
10361 | uiout->field_string | |
10362 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10363 | break; |
10364 | ||
10365 | case bp_access_watchpoint: | |
112e8700 SM |
10366 | if (uiout->is_mi_like_p ()) |
10367 | uiout->field_string | |
10368 | ("reason", | |
348d480f PA |
10369 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10370 | break; | |
10371 | default: | |
10372 | internal_error (__FILE__, __LINE__, | |
10373 | _("Invalid hardware watchpoint type.")); | |
10374 | } | |
10375 | ||
10376 | mention (b); | |
112e8700 | 10377 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10378 | Check the underlying instruction at PC for the memory\n\ |
10379 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10380 | uiout->text ("\n"); |
9c06b0b4 TJB |
10381 | |
10382 | /* More than one watchpoint may have been triggered. */ | |
10383 | return PRINT_UNKNOWN; | |
10384 | } | |
10385 | ||
10386 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10387 | masked hardware watchpoints. */ | |
10388 | ||
10389 | static void | |
10390 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10391 | struct ui_out *uiout) | |
10392 | { | |
3a5c3e22 PA |
10393 | struct watchpoint *w = (struct watchpoint *) b; |
10394 | ||
9c06b0b4 TJB |
10395 | /* Masked watchpoints have only one location. */ |
10396 | gdb_assert (b->loc && b->loc->next == NULL); | |
10397 | ||
112e8700 SM |
10398 | uiout->text ("\tmask "); |
10399 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10400 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10401 | } |
10402 | ||
10403 | /* Implement the "print_mention" breakpoint_ops method for | |
10404 | masked hardware watchpoints. */ | |
10405 | ||
10406 | static void | |
10407 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10408 | { | |
3a5c3e22 | 10409 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10410 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10411 | const char *tuple_name; |
9c06b0b4 TJB |
10412 | |
10413 | switch (b->type) | |
10414 | { | |
10415 | case bp_hardware_watchpoint: | |
112e8700 | 10416 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10417 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10418 | break; |
10419 | case bp_read_watchpoint: | |
112e8700 | 10420 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10421 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10422 | break; |
10423 | case bp_access_watchpoint: | |
112e8700 | 10424 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10425 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10426 | break; |
10427 | default: | |
10428 | internal_error (__FILE__, __LINE__, | |
10429 | _("Invalid hardware watchpoint type.")); | |
10430 | } | |
10431 | ||
46b9c129 | 10432 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10433 | uiout->field_int ("number", b->number); |
10434 | uiout->text (": "); | |
10435 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10436 | } |
10437 | ||
10438 | /* Implement the "print_recreate" breakpoint_ops method for | |
10439 | masked hardware watchpoints. */ | |
10440 | ||
10441 | static void | |
10442 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10443 | { | |
3a5c3e22 | 10444 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10445 | char tmp[40]; |
10446 | ||
10447 | switch (b->type) | |
10448 | { | |
10449 | case bp_hardware_watchpoint: | |
10450 | fprintf_unfiltered (fp, "watch"); | |
10451 | break; | |
10452 | case bp_read_watchpoint: | |
10453 | fprintf_unfiltered (fp, "rwatch"); | |
10454 | break; | |
10455 | case bp_access_watchpoint: | |
10456 | fprintf_unfiltered (fp, "awatch"); | |
10457 | break; | |
10458 | default: | |
10459 | internal_error (__FILE__, __LINE__, | |
10460 | _("Invalid hardware watchpoint type.")); | |
10461 | } | |
10462 | ||
3a5c3e22 PA |
10463 | sprintf_vma (tmp, w->hw_wp_mask); |
10464 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10465 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10466 | } |
10467 | ||
10468 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10469 | ||
2060206e | 10470 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10471 | |
10472 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10473 | ||
10474 | static int | |
10475 | is_masked_watchpoint (const struct breakpoint *b) | |
10476 | { | |
10477 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10478 | } | |
10479 | ||
53a5351d JM |
10480 | /* accessflag: hw_write: watch write, |
10481 | hw_read: watch read, | |
10482 | hw_access: watch access (read or write) */ | |
c906108c | 10483 | static void |
bbc13ae3 | 10484 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10485 | int just_location, int internal) |
c906108c | 10486 | { |
c1fc2657 | 10487 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10488 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10489 | struct value *result; |
bb9d5f81 | 10490 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10491 | const char *exp_start = NULL; |
10492 | const char *exp_end = NULL; | |
10493 | const char *tok, *end_tok; | |
9c06b0b4 | 10494 | int toklen = -1; |
bbc13ae3 KS |
10495 | const char *cond_start = NULL; |
10496 | const char *cond_end = NULL; | |
c906108c | 10497 | enum bptype bp_type; |
37e4754d | 10498 | int thread = -1; |
0cf6dd15 | 10499 | int pc = 0; |
9c06b0b4 TJB |
10500 | /* Flag to indicate whether we are going to use masks for |
10501 | the hardware watchpoint. */ | |
10502 | int use_mask = 0; | |
10503 | CORE_ADDR mask = 0; | |
c906108c | 10504 | |
37e4754d LM |
10505 | /* Make sure that we actually have parameters to parse. */ |
10506 | if (arg != NULL && arg[0] != '\0') | |
10507 | { | |
bbc13ae3 KS |
10508 | const char *value_start; |
10509 | ||
10510 | exp_end = arg + strlen (arg); | |
37e4754d | 10511 | |
9c06b0b4 TJB |
10512 | /* Look for "parameter value" pairs at the end |
10513 | of the arguments string. */ | |
bbc13ae3 | 10514 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10515 | { |
10516 | /* Skip whitespace at the end of the argument list. */ | |
10517 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10518 | tok--; | |
10519 | ||
10520 | /* Find the beginning of the last token. | |
10521 | This is the value of the parameter. */ | |
10522 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10523 | tok--; | |
10524 | value_start = tok + 1; | |
10525 | ||
10526 | /* Skip whitespace. */ | |
10527 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10528 | tok--; | |
10529 | ||
10530 | end_tok = tok; | |
10531 | ||
10532 | /* Find the beginning of the second to last token. | |
10533 | This is the parameter itself. */ | |
10534 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10535 | tok--; | |
10536 | tok++; | |
10537 | toklen = end_tok - tok + 1; | |
10538 | ||
61012eef | 10539 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10540 | { |
5d5658a1 | 10541 | struct thread_info *thr; |
9c06b0b4 TJB |
10542 | /* At this point we've found a "thread" token, which means |
10543 | the user is trying to set a watchpoint that triggers | |
10544 | only in a specific thread. */ | |
5d5658a1 | 10545 | const char *endp; |
37e4754d | 10546 | |
9c06b0b4 TJB |
10547 | if (thread != -1) |
10548 | error(_("You can specify only one thread.")); | |
37e4754d | 10549 | |
9c06b0b4 | 10550 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10551 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10552 | |
5d5658a1 | 10553 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10554 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10555 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10556 | |
5d5658a1 | 10557 | thread = thr->global_num; |
9c06b0b4 | 10558 | } |
61012eef | 10559 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10560 | { |
10561 | /* We've found a "mask" token, which means the user wants to | |
10562 | create a hardware watchpoint that is going to have the mask | |
10563 | facility. */ | |
10564 | struct value *mask_value, *mark; | |
37e4754d | 10565 | |
9c06b0b4 TJB |
10566 | if (use_mask) |
10567 | error(_("You can specify only one mask.")); | |
37e4754d | 10568 | |
9c06b0b4 | 10569 | use_mask = just_location = 1; |
37e4754d | 10570 | |
9c06b0b4 TJB |
10571 | mark = value_mark (); |
10572 | mask_value = parse_to_comma_and_eval (&value_start); | |
10573 | mask = value_as_address (mask_value); | |
10574 | value_free_to_mark (mark); | |
10575 | } | |
10576 | else | |
10577 | /* We didn't recognize what we found. We should stop here. */ | |
10578 | break; | |
37e4754d | 10579 | |
9c06b0b4 TJB |
10580 | /* Truncate the string and get rid of the "parameter value" pair before |
10581 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10582 | exp_end = tok; |
9c06b0b4 | 10583 | } |
37e4754d | 10584 | } |
bbc13ae3 KS |
10585 | else |
10586 | exp_end = arg; | |
37e4754d | 10587 | |
bbc13ae3 KS |
10588 | /* Parse the rest of the arguments. From here on out, everything |
10589 | is in terms of a newly allocated string instead of the original | |
10590 | ARG. */ | |
81b1e71c TT |
10591 | std::string expression (arg, exp_end - arg); |
10592 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10593 | innermost_block_tracker tracker; |
10594 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10595 | exp_end = arg; |
fa8a61dc TT |
10596 | /* Remove trailing whitespace from the expression before saving it. |
10597 | This makes the eventual display of the expression string a bit | |
10598 | prettier. */ | |
10599 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10600 | --exp_end; | |
10601 | ||
65d79d4b | 10602 | /* Checking if the expression is not constant. */ |
4d01a485 | 10603 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10604 | { |
10605 | int len; | |
10606 | ||
10607 | len = exp_end - exp_start; | |
10608 | while (len > 0 && isspace (exp_start[len - 1])) | |
10609 | len--; | |
10610 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10611 | } | |
10612 | ||
699bd4cf | 10613 | exp_valid_block = tracker.block (); |
b926417a | 10614 | struct value *mark = value_mark (); |
850645cf TT |
10615 | struct value *val_as_value = nullptr; |
10616 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10617 | just_location); | |
06a64a0b | 10618 | |
850645cf | 10619 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10620 | { |
850645cf TT |
10621 | saved_bitpos = value_bitpos (val_as_value); |
10622 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10623 | } |
10624 | ||
850645cf | 10625 | value_ref_ptr val; |
06a64a0b TT |
10626 | if (just_location) |
10627 | { | |
9c06b0b4 TJB |
10628 | int ret; |
10629 | ||
06a64a0b | 10630 | exp_valid_block = NULL; |
850645cf | 10631 | val = release_value (value_addr (result)); |
06a64a0b | 10632 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10633 | |
10634 | if (use_mask) | |
10635 | { | |
850645cf | 10636 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10637 | mask); |
10638 | if (ret == -1) | |
10639 | error (_("This target does not support masked watchpoints.")); | |
10640 | else if (ret == -2) | |
10641 | error (_("Invalid mask or memory region.")); | |
10642 | } | |
06a64a0b | 10643 | } |
850645cf TT |
10644 | else if (val_as_value != NULL) |
10645 | val = release_value (val_as_value); | |
c906108c | 10646 | |
f1735a53 TT |
10647 | tok = skip_spaces (arg); |
10648 | end_tok = skip_to_space (tok); | |
c906108c SS |
10649 | |
10650 | toklen = end_tok - tok; | |
10651 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10652 | { | |
10653 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10654 | innermost_block_tracker if_tracker; |
10655 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10656 | |
10657 | /* The watchpoint expression may not be local, but the condition | |
10658 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10659 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10660 | |
c906108c SS |
10661 | cond_end = tok; |
10662 | } | |
10663 | if (*tok) | |
8a3fe4f8 | 10664 | error (_("Junk at end of command.")); |
c906108c | 10665 | |
441d7c93 PA |
10666 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10667 | ||
10668 | /* Save this because create_internal_breakpoint below invalidates | |
10669 | 'wp_frame'. */ | |
10670 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10671 | |
10672 | /* If the expression is "local", then set up a "watchpoint scope" | |
10673 | breakpoint at the point where we've left the scope of the watchpoint | |
10674 | expression. Create the scope breakpoint before the watchpoint, so | |
10675 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10676 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10677 | { |
441d7c93 PA |
10678 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10679 | ||
10680 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10681 | { |
441d7c93 PA |
10682 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10683 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10684 | ||
edb3359d | 10685 | scope_breakpoint |
441d7c93 | 10686 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10687 | bp_watchpoint_scope, |
10688 | &momentary_breakpoint_ops); | |
d983da9c | 10689 | |
441d7c93 PA |
10690 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10691 | wp_frame = NULL; | |
10692 | ||
edb3359d | 10693 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10694 | |
edb3359d DJ |
10695 | /* Automatically delete the breakpoint when it hits. */ |
10696 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10697 | |
edb3359d | 10698 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10699 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10700 | |
edb3359d | 10701 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10702 | scope_breakpoint->loc->gdbarch = caller_arch; |
10703 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10704 | scope_breakpoint->loc->address |
a6d9a66e UW |
10705 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10706 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10707 | scope_breakpoint->type); |
10708 | } | |
d983da9c DJ |
10709 | } |
10710 | ||
e8369a73 AB |
10711 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10712 | watchpoints here even if hardware watchpoints are turned off, a call | |
10713 | to update_watchpoint later in this function will cause the type to | |
10714 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10715 | ||
10716 | if (accessflag == hw_read) | |
10717 | bp_type = bp_read_watchpoint; | |
10718 | else if (accessflag == hw_access) | |
10719 | bp_type = bp_access_watchpoint; | |
10720 | else | |
10721 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10722 | |
b270e6f9 | 10723 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10724 | |
348d480f | 10725 | if (use_mask) |
b270e6f9 | 10726 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10727 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10728 | else |
b270e6f9 | 10729 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10730 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10731 | w->thread = thread; |
10732 | w->disposition = disp_donttouch; | |
10733 | w->pspace = current_program_space; | |
b22e99fd | 10734 | w->exp = std::move (exp); |
3a5c3e22 PA |
10735 | w->exp_valid_block = exp_valid_block; |
10736 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10737 | if (just_location) |
10738 | { | |
850645cf TT |
10739 | struct type *t = value_type (val.get ()); |
10740 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10741 | |
43cc5389 TT |
10742 | w->exp_string_reparse |
10743 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10744 | |
3a5c3e22 | 10745 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10746 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10747 | } |
10748 | else | |
3a5c3e22 | 10749 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10750 | |
10751 | if (use_mask) | |
10752 | { | |
3a5c3e22 | 10753 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10754 | } |
10755 | else | |
10756 | { | |
3a5c3e22 | 10757 | w->val = val; |
bb9d5f81 PP |
10758 | w->val_bitpos = saved_bitpos; |
10759 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10760 | w->val_valid = 1; |
9c06b0b4 | 10761 | } |
77b06cd7 | 10762 | |
c906108c | 10763 | if (cond_start) |
c1fc2657 | 10764 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10765 | else |
c1fc2657 | 10766 | w->cond_string = 0; |
c5aa993b | 10767 | |
441d7c93 | 10768 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10769 | { |
441d7c93 | 10770 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10771 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10772 | } |
c906108c | 10773 | else |
f6bc2008 | 10774 | { |
3a5c3e22 PA |
10775 | w->watchpoint_frame = null_frame_id; |
10776 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10777 | } |
c906108c | 10778 | |
d983da9c | 10779 | if (scope_breakpoint != NULL) |
c906108c | 10780 | { |
d983da9c DJ |
10781 | /* The scope breakpoint is related to the watchpoint. We will |
10782 | need to act on them together. */ | |
c1fc2657 | 10783 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10784 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10785 | } |
d983da9c | 10786 | |
06a64a0b TT |
10787 | if (!just_location) |
10788 | value_free_to_mark (mark); | |
2d134ed3 | 10789 | |
b270e6f9 TT |
10790 | /* Finally update the new watchpoint. This creates the locations |
10791 | that should be inserted. */ | |
10792 | update_watchpoint (w.get (), 1); | |
a9634178 | 10793 | |
b270e6f9 | 10794 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10795 | } |
10796 | ||
e09342b5 | 10797 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10798 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10799 | |
c906108c | 10800 | static int |
a6535de1 | 10801 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10802 | { |
10803 | int found_memory_cnt = 0; | |
10804 | ||
10805 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10806 | if (!can_use_hw_watchpoints) |
c906108c | 10807 | return 0; |
c5aa993b | 10808 | |
a6535de1 TT |
10809 | gdb_assert (!vals.empty ()); |
10810 | struct value *head = vals[0].get (); | |
10811 | ||
5c44784c JM |
10812 | /* Make sure that the value of the expression depends only upon |
10813 | memory contents, and values computed from them within GDB. If we | |
10814 | find any register references or function calls, we can't use a | |
10815 | hardware watchpoint. | |
10816 | ||
10817 | The idea here is that evaluating an expression generates a series | |
10818 | of values, one holding the value of every subexpression. (The | |
10819 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10820 | a*b+c.) GDB's values hold almost enough information to establish | |
10821 | the criteria given above --- they identify memory lvalues, | |
10822 | register lvalues, computed values, etcetera. So we can evaluate | |
10823 | the expression, and then scan the chain of values that leaves | |
10824 | behind to decide whether we can detect any possible change to the | |
10825 | expression's final value using only hardware watchpoints. | |
10826 | ||
10827 | However, I don't think that the values returned by inferior | |
10828 | function calls are special in any way. So this function may not | |
10829 | notice that an expression involving an inferior function call | |
10830 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10831 | for (const value_ref_ptr &iter : vals) |
c906108c | 10832 | { |
a6535de1 TT |
10833 | struct value *v = iter.get (); |
10834 | ||
5c44784c | 10835 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10836 | { |
8464be76 DJ |
10837 | if (v != head && value_lazy (v)) |
10838 | /* A lazy memory lvalue in the chain is one that GDB never | |
10839 | needed to fetch; we either just used its address (e.g., | |
10840 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10841 | in `a,b'). This doesn't apply to HEAD; if that is | |
10842 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10843 | ; |
53a5351d | 10844 | else |
5c44784c JM |
10845 | { |
10846 | /* Ahh, memory we actually used! Check if we can cover | |
10847 | it with hardware watchpoints. */ | |
df407dfe | 10848 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10849 | |
10850 | /* We only watch structs and arrays if user asked for it | |
10851 | explicitly, never if they just happen to appear in a | |
10852 | middle of some value chain. */ | |
10853 | if (v == head | |
10854 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10855 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10856 | { | |
42ae5230 | 10857 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10858 | int len; |
10859 | int num_regs; | |
10860 | ||
a9634178 | 10861 | len = (target_exact_watchpoints |
e09342b5 TJB |
10862 | && is_scalar_type_recursive (vtype))? |
10863 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10864 | |
e09342b5 TJB |
10865 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10866 | if (!num_regs) | |
2e70b7b9 MS |
10867 | return 0; |
10868 | else | |
e09342b5 | 10869 | found_memory_cnt += num_regs; |
2e70b7b9 | 10870 | } |
5c44784c | 10871 | } |
c5aa993b | 10872 | } |
5086187c AC |
10873 | else if (VALUE_LVAL (v) != not_lval |
10874 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10875 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10876 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10877 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10878 | } |
10879 | ||
10880 | /* The expression itself looks suitable for using a hardware | |
10881 | watchpoint, but give the target machine a chance to reject it. */ | |
10882 | return found_memory_cnt; | |
10883 | } | |
10884 | ||
8b93c638 | 10885 | void |
f2fc3015 | 10886 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10887 | { |
84f4c1fe | 10888 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10889 | } |
10890 | ||
06a64a0b TT |
10891 | /* A helper function that looks for the "-location" argument and then |
10892 | calls watch_command_1. */ | |
10893 | ||
10894 | static void | |
0b39b52e | 10895 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10896 | { |
10897 | int just_location = 0; | |
10898 | ||
10899 | if (arg | |
10900 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10901 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10902 | { | |
e9cafbcc | 10903 | arg = skip_spaces (arg); |
06a64a0b TT |
10904 | just_location = 1; |
10905 | } | |
10906 | ||
84f4c1fe | 10907 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10908 | } |
8926118c | 10909 | |
c5aa993b | 10910 | static void |
0b39b52e | 10911 | watch_command (const char *arg, int from_tty) |
c906108c | 10912 | { |
06a64a0b | 10913 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10914 | } |
10915 | ||
8b93c638 | 10916 | void |
f2fc3015 | 10917 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10918 | { |
84f4c1fe | 10919 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10920 | } |
8926118c | 10921 | |
c5aa993b | 10922 | static void |
0b39b52e | 10923 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10924 | { |
06a64a0b | 10925 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10926 | } |
10927 | ||
8b93c638 | 10928 | void |
f2fc3015 | 10929 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10930 | { |
84f4c1fe | 10931 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10932 | } |
8926118c | 10933 | |
c5aa993b | 10934 | static void |
0b39b52e | 10935 | awatch_command (const char *arg, int from_tty) |
c906108c | 10936 | { |
06a64a0b | 10937 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10938 | } |
c906108c | 10939 | \f |
c5aa993b | 10940 | |
cfc31633 PA |
10941 | /* Data for the FSM that manages the until(location)/advance commands |
10942 | in infcmd.c. Here because it uses the mechanisms of | |
10943 | breakpoints. */ | |
c906108c | 10944 | |
46e3ed7f | 10945 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10946 | { |
46e3ed7f | 10947 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10948 | int thread; |
10949 | ||
10950 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10951 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10952 | |
10953 | /* Breakpoint set at the return address in the caller frame. May be | |
10954 | NULL. */ | |
46e3ed7f | 10955 | breakpoint_up caller_breakpoint; |
cfc31633 | 10956 | |
46e3ed7f TT |
10957 | until_break_fsm (struct interp *cmd_interp, int thread, |
10958 | breakpoint_up &&location_breakpoint, | |
10959 | breakpoint_up &&caller_breakpoint) | |
10960 | : thread_fsm (cmd_interp), | |
10961 | thread (thread), | |
10962 | location_breakpoint (std::move (location_breakpoint)), | |
10963 | caller_breakpoint (std::move (caller_breakpoint)) | |
10964 | { | |
10965 | } | |
cfc31633 | 10966 | |
46e3ed7f TT |
10967 | void clean_up (struct thread_info *thread) override; |
10968 | bool should_stop (struct thread_info *thread) override; | |
10969 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10970 | }; |
10971 | ||
cfc31633 PA |
10972 | /* Implementation of the 'should_stop' FSM method for the |
10973 | until(location)/advance commands. */ | |
10974 | ||
46e3ed7f TT |
10975 | bool |
10976 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10977 | { |
cfc31633 | 10978 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10979 | location_breakpoint.get ()) != NULL |
10980 | || (caller_breakpoint != NULL | |
cfc31633 | 10981 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10982 | caller_breakpoint.get ()) != NULL)) |
10983 | set_finished (); | |
cfc31633 | 10984 | |
46e3ed7f | 10985 | return true; |
cfc31633 PA |
10986 | } |
10987 | ||
10988 | /* Implementation of the 'clean_up' FSM method for the | |
10989 | until(location)/advance commands. */ | |
10990 | ||
46e3ed7f TT |
10991 | void |
10992 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10993 | { |
cfc31633 | 10994 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10995 | location_breakpoint.reset (); |
10996 | caller_breakpoint.reset (); | |
10997 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
10998 | } |
10999 | ||
11000 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11001 | until(location)/advance commands. */ | |
11002 | ||
46e3ed7f TT |
11003 | enum async_reply_reason |
11004 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
11005 | { |
11006 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11007 | } |
11008 | ||
c906108c | 11009 | void |
f2fc3015 | 11010 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11011 | { |
8556afb4 PA |
11012 | struct frame_info *frame; |
11013 | struct gdbarch *frame_gdbarch; | |
11014 | struct frame_id stack_frame_id; | |
11015 | struct frame_id caller_frame_id; | |
186c406b TT |
11016 | int thread; |
11017 | struct thread_info *tp; | |
c906108c | 11018 | |
70509625 | 11019 | clear_proceed_status (0); |
c906108c SS |
11020 | |
11021 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11022 | this function. */ |
c5aa993b | 11023 | |
ffc2605c | 11024 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11025 | |
6c5b2ebe PA |
11026 | std::vector<symtab_and_line> sals |
11027 | = (last_displayed_sal_is_valid () | |
11028 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11029 | get_last_displayed_symtab (), | |
11030 | get_last_displayed_line ()) | |
11031 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11032 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11033 | |
6c5b2ebe | 11034 | if (sals.size () != 1) |
8a3fe4f8 | 11035 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11036 | |
6c5b2ebe | 11037 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11038 | |
c906108c | 11039 | if (*arg) |
8a3fe4f8 | 11040 | error (_("Junk at end of arguments.")); |
c5aa993b | 11041 | |
c906108c | 11042 | resolve_sal_pc (&sal); |
c5aa993b | 11043 | |
186c406b | 11044 | tp = inferior_thread (); |
5d5658a1 | 11045 | thread = tp->global_num; |
186c406b | 11046 | |
8556afb4 PA |
11047 | /* Note linespec handling above invalidates the frame chain. |
11048 | Installing a breakpoint also invalidates the frame chain (as it | |
11049 | may need to switch threads), so do any frame handling before | |
11050 | that. */ | |
11051 | ||
11052 | frame = get_selected_frame (NULL); | |
11053 | frame_gdbarch = get_frame_arch (frame); | |
11054 | stack_frame_id = get_stack_frame_id (frame); | |
11055 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11056 | |
ae66c1fc EZ |
11057 | /* Keep within the current frame, or in frames called by the current |
11058 | one. */ | |
edb3359d | 11059 | |
454dafbd | 11060 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11061 | |
11062 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11063 | ||
883bc8d1 | 11064 | if (frame_id_p (caller_frame_id)) |
c906108c | 11065 | { |
883bc8d1 | 11066 | struct symtab_and_line sal2; |
cfc31633 | 11067 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11068 | |
11069 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11070 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11071 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11072 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11073 | sal2, | |
11074 | caller_frame_id, | |
11075 | bp_until); | |
186c406b | 11076 | |
883bc8d1 | 11077 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11078 | lj_deleter.emplace (thread); |
c906108c | 11079 | } |
c5aa993b | 11080 | |
c70a6932 JK |
11081 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11082 | frame = NULL; | |
11083 | ||
454dafbd | 11084 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11085 | if (anywhere) |
11086 | /* If the user told us to continue until a specified location, | |
11087 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11088 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11089 | null_frame_id, bp_until); | |
883bc8d1 PA |
11090 | else |
11091 | /* Otherwise, specify the selected frame, because we want to stop | |
11092 | only at the very same frame. */ | |
cfc31633 PA |
11093 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11094 | stack_frame_id, bp_until); | |
883bc8d1 | 11095 | |
46e3ed7f TT |
11096 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11097 | std::move (location_breakpoint), | |
11098 | std::move (caller_breakpoint)); | |
f107f563 | 11099 | |
5419bdae TT |
11100 | if (lj_deleter) |
11101 | lj_deleter->release (); | |
f107f563 | 11102 | |
cfc31633 | 11103 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11104 | } |
ae66c1fc | 11105 | |
c906108c SS |
11106 | /* This function attempts to parse an optional "if <cond>" clause |
11107 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11108 | |
c906108c SS |
11109 | Else, it returns a pointer to the condition string. (It does not |
11110 | attempt to evaluate the string against a particular block.) And, | |
11111 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11112 | if clause in the arg string. */ |
53a5351d | 11113 | |
63160a43 PA |
11114 | const char * |
11115 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11116 | { |
63160a43 | 11117 | const char *cond_string; |
c5aa993b JM |
11118 | |
11119 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11120 | return NULL; |
c5aa993b | 11121 | |
4a64f543 | 11122 | /* Skip the "if" keyword. */ |
c906108c | 11123 | (*arg) += 2; |
c5aa993b | 11124 | |
c906108c | 11125 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11126 | condition string. */ |
f1735a53 | 11127 | *arg = skip_spaces (*arg); |
c906108c | 11128 | cond_string = *arg; |
c5aa993b | 11129 | |
4a64f543 MS |
11130 | /* Assume that the condition occupies the remainder of the arg |
11131 | string. */ | |
c906108c | 11132 | (*arg) += strlen (cond_string); |
c5aa993b | 11133 | |
c906108c SS |
11134 | return cond_string; |
11135 | } | |
c5aa993b | 11136 | |
c906108c SS |
11137 | /* Commands to deal with catching events, such as signals, exceptions, |
11138 | process start/exit, etc. */ | |
c5aa993b JM |
11139 | |
11140 | typedef enum | |
11141 | { | |
44feb3ce TT |
11142 | catch_fork_temporary, catch_vfork_temporary, |
11143 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11144 | } |
11145 | catch_fork_kind; | |
11146 | ||
c906108c | 11147 | static void |
eb4c3f4a | 11148 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11149 | struct cmd_list_element *command) |
c906108c | 11150 | { |
a6d9a66e | 11151 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11152 | const char *cond_string = NULL; |
44feb3ce TT |
11153 | catch_fork_kind fork_kind; |
11154 | int tempflag; | |
11155 | ||
11156 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11157 | tempflag = (fork_kind == catch_fork_temporary | |
11158 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11159 | |
44feb3ce TT |
11160 | if (!arg) |
11161 | arg = ""; | |
f1735a53 | 11162 | arg = skip_spaces (arg); |
c5aa993b | 11163 | |
c906108c | 11164 | /* The allowed syntax is: |
c5aa993b JM |
11165 | catch [v]fork |
11166 | catch [v]fork if <cond> | |
11167 | ||
4a64f543 | 11168 | First, check if there's an if clause. */ |
c906108c | 11169 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11170 | |
c906108c | 11171 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11172 | error (_("Junk at end of arguments.")); |
c5aa993b | 11173 | |
c906108c | 11174 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11175 | and enable reporting of such events. */ |
c5aa993b JM |
11176 | switch (fork_kind) |
11177 | { | |
44feb3ce TT |
11178 | case catch_fork_temporary: |
11179 | case catch_fork_permanent: | |
a6d9a66e | 11180 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11181 | &catch_fork_breakpoint_ops); |
c906108c | 11182 | break; |
44feb3ce TT |
11183 | case catch_vfork_temporary: |
11184 | case catch_vfork_permanent: | |
a6d9a66e | 11185 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11186 | &catch_vfork_breakpoint_ops); |
c906108c | 11187 | break; |
c5aa993b | 11188 | default: |
8a3fe4f8 | 11189 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11190 | break; |
c5aa993b | 11191 | } |
c906108c SS |
11192 | } |
11193 | ||
11194 | static void | |
eb4c3f4a | 11195 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11196 | struct cmd_list_element *command) |
c906108c | 11197 | { |
a6d9a66e | 11198 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11199 | int tempflag; |
63160a43 | 11200 | const char *cond_string = NULL; |
c906108c | 11201 | |
44feb3ce TT |
11202 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11203 | ||
11204 | if (!arg) | |
11205 | arg = ""; | |
f1735a53 | 11206 | arg = skip_spaces (arg); |
c906108c SS |
11207 | |
11208 | /* The allowed syntax is: | |
c5aa993b JM |
11209 | catch exec |
11210 | catch exec if <cond> | |
c906108c | 11211 | |
4a64f543 | 11212 | First, check if there's an if clause. */ |
c906108c SS |
11213 | cond_string = ep_parse_optional_if_clause (&arg); |
11214 | ||
11215 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11216 | error (_("Junk at end of arguments.")); |
c906108c | 11217 | |
b270e6f9 TT |
11218 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11219 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11220 | &catch_exec_breakpoint_ops); |
11221 | c->exec_pathname = NULL; | |
11222 | ||
b270e6f9 | 11223 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11224 | } |
c5aa993b | 11225 | |
9ac4176b | 11226 | void |
28010a5d PA |
11227 | init_ada_exception_breakpoint (struct breakpoint *b, |
11228 | struct gdbarch *gdbarch, | |
11229 | struct symtab_and_line sal, | |
f2fc3015 | 11230 | const char *addr_string, |
c0a91b2b | 11231 | const struct breakpoint_ops *ops, |
28010a5d | 11232 | int tempflag, |
349774ef | 11233 | int enabled, |
28010a5d | 11234 | int from_tty) |
f7f9143b | 11235 | { |
f7f9143b JB |
11236 | if (from_tty) |
11237 | { | |
5af949e3 UW |
11238 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11239 | if (!loc_gdbarch) | |
11240 | loc_gdbarch = gdbarch; | |
11241 | ||
6c95b8df PA |
11242 | describe_other_breakpoints (loc_gdbarch, |
11243 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11244 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11245 | version for exception catchpoints, because two catchpoints | |
11246 | used for different exception names will use the same address. | |
11247 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11248 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11249 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11250 | the user what type of catchpoint it is. The above is good |
11251 | enough for now, though. */ | |
11252 | } | |
11253 | ||
28010a5d | 11254 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11255 | |
349774ef | 11256 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11257 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11258 | b->location = string_to_event_location (&addr_string, |
11259 | language_def (language_ada)); | |
f7f9143b | 11260 | b->language = language_ada; |
f7f9143b JB |
11261 | } |
11262 | ||
c906108c | 11263 | static void |
981a3fb3 | 11264 | catch_command (const char *arg, int from_tty) |
c906108c | 11265 | { |
44feb3ce | 11266 | error (_("Catch requires an event name.")); |
c906108c SS |
11267 | } |
11268 | \f | |
11269 | ||
11270 | static void | |
981a3fb3 | 11271 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11272 | { |
44feb3ce | 11273 | error (_("Catch requires an event name.")); |
c906108c SS |
11274 | } |
11275 | ||
81b1e71c | 11276 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11277 | |
11278 | static int | |
81b1e71c | 11279 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11280 | { |
81b1e71c TT |
11281 | uintptr_t ua = (uintptr_t) a; |
11282 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11283 | |
81b1e71c | 11284 | if (a->number < b->number) |
8a2c437b | 11285 | return -1; |
81b1e71c | 11286 | else if (a->number > b->number) |
8a2c437b TT |
11287 | return 1; |
11288 | ||
11289 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11290 | the number 0. */ | |
11291 | if (ua < ub) | |
11292 | return -1; | |
94b0e70d | 11293 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11294 | } |
11295 | ||
80f8a6eb | 11296 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11297 | |
11298 | static void | |
0b39b52e | 11299 | clear_command (const char *arg, int from_tty) |
c906108c | 11300 | { |
81b1e71c | 11301 | struct breakpoint *b; |
c906108c | 11302 | int default_match; |
c906108c | 11303 | |
6c5b2ebe PA |
11304 | std::vector<symtab_and_line> decoded_sals; |
11305 | symtab_and_line last_sal; | |
11306 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11307 | if (arg) |
11308 | { | |
6c5b2ebe PA |
11309 | decoded_sals |
11310 | = decode_line_with_current_source (arg, | |
11311 | (DECODE_LINE_FUNFIRSTLINE | |
11312 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11313 | default_match = 0; |
6c5b2ebe | 11314 | sals = decoded_sals; |
c906108c SS |
11315 | } |
11316 | else | |
11317 | { | |
1bfeeb0f JL |
11318 | /* Set sal's line, symtab, pc, and pspace to the values |
11319 | corresponding to the last call to print_frame_info. If the | |
11320 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11321 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11322 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11323 | error (_("No source file specified.")); |
c906108c | 11324 | |
c906108c | 11325 | default_match = 1; |
6c5b2ebe | 11326 | sals = last_sal; |
c906108c SS |
11327 | } |
11328 | ||
4a64f543 MS |
11329 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11330 | seems, because all existing breakpoints typically have both | |
11331 | file/line and pc set. So, if clear is given file/line, we can | |
11332 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11333 | |
11334 | We only support clearing given the address explicitly | |
11335 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11336 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11337 | due to optimization, all in one block. |
4a64f543 MS |
11338 | |
11339 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11340 | PC corresponding to the same file:line, the breakpoint won't |
11341 | be cleared. We probably can still clear the breakpoint, but | |
11342 | since the other PC value is never presented to user, user | |
11343 | can only find it by guessing, and it does not seem important | |
11344 | to support that. */ | |
11345 | ||
4a64f543 MS |
11346 | /* For each line spec given, delete bps which correspond to it. Do |
11347 | it in two passes, solely to preserve the current behavior that | |
11348 | from_tty is forced true if we delete more than one | |
11349 | breakpoint. */ | |
c906108c | 11350 | |
81b1e71c | 11351 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11352 | for (const auto &sal : sals) |
c906108c | 11353 | { |
05cba821 JK |
11354 | const char *sal_fullname; |
11355 | ||
c906108c | 11356 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11357 | If line given (pc == 0), clear all bpts on specified line. |
11358 | If defaulting, clear all bpts on default line | |
c906108c | 11359 | or at default pc. |
c5aa993b JM |
11360 | |
11361 | defaulting sal.pc != 0 tests to do | |
11362 | ||
11363 | 0 1 pc | |
11364 | 1 1 pc _and_ line | |
11365 | 0 0 line | |
11366 | 1 0 <can't happen> */ | |
c906108c | 11367 | |
05cba821 JK |
11368 | sal_fullname = (sal.symtab == NULL |
11369 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11370 | |
4a64f543 | 11371 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11372 | ALL_BREAKPOINTS (b) |
c5aa993b | 11373 | { |
0d381245 | 11374 | int match = 0; |
4a64f543 | 11375 | /* Are we going to delete b? */ |
cc60f2e3 | 11376 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11377 | { |
11378 | struct bp_location *loc = b->loc; | |
11379 | for (; loc; loc = loc->next) | |
11380 | { | |
f8eba3c6 TT |
11381 | /* If the user specified file:line, don't allow a PC |
11382 | match. This matches historical gdb behavior. */ | |
11383 | int pc_match = (!sal.explicit_line | |
11384 | && sal.pc | |
11385 | && (loc->pspace == sal.pspace) | |
11386 | && (loc->address == sal.pc) | |
11387 | && (!section_is_overlay (loc->section) | |
11388 | || loc->section == sal.section)); | |
4aac40c8 TT |
11389 | int line_match = 0; |
11390 | ||
11391 | if ((default_match || sal.explicit_line) | |
2f202fde | 11392 | && loc->symtab != NULL |
05cba821 | 11393 | && sal_fullname != NULL |
4aac40c8 | 11394 | && sal.pspace == loc->pspace |
05cba821 JK |
11395 | && loc->line_number == sal.line |
11396 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11397 | sal_fullname) == 0) | |
11398 | line_match = 1; | |
4aac40c8 | 11399 | |
0d381245 VP |
11400 | if (pc_match || line_match) |
11401 | { | |
11402 | match = 1; | |
11403 | break; | |
11404 | } | |
11405 | } | |
11406 | } | |
11407 | ||
11408 | if (match) | |
81b1e71c | 11409 | found.push_back (b); |
c906108c | 11410 | } |
80f8a6eb | 11411 | } |
8a2c437b | 11412 | |
80f8a6eb | 11413 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11414 | if (found.empty ()) |
80f8a6eb MS |
11415 | { |
11416 | if (arg) | |
8a3fe4f8 | 11417 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11418 | else |
8a3fe4f8 | 11419 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11420 | } |
c906108c | 11421 | |
8a2c437b | 11422 | /* Remove duplicates from the vec. */ |
81b1e71c | 11423 | std::sort (found.begin (), found.end (), |
b926417a | 11424 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11425 | { |
b926417a | 11426 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11427 | }); |
11428 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11429 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11430 | { |
b926417a | 11431 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11432 | }), |
11433 | found.end ()); | |
8a2c437b | 11434 | |
81b1e71c | 11435 | if (found.size () > 1) |
4a64f543 | 11436 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11437 | if (from_tty) |
a3f17187 | 11438 | { |
81b1e71c | 11439 | if (found.size () == 1) |
a3f17187 AC |
11440 | printf_unfiltered (_("Deleted breakpoint ")); |
11441 | else | |
11442 | printf_unfiltered (_("Deleted breakpoints ")); | |
11443 | } | |
d6e956e5 | 11444 | |
81b1e71c | 11445 | for (breakpoint *iter : found) |
80f8a6eb | 11446 | { |
c5aa993b | 11447 | if (from_tty) |
81b1e71c TT |
11448 | printf_unfiltered ("%d ", iter->number); |
11449 | delete_breakpoint (iter); | |
c906108c | 11450 | } |
80f8a6eb MS |
11451 | if (from_tty) |
11452 | putchar_unfiltered ('\n'); | |
c906108c SS |
11453 | } |
11454 | \f | |
11455 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11456 | all breakpoints that are marked for deletion, whether hit or not. | |
11457 | This is called after any breakpoint is hit, or after errors. */ | |
11458 | ||
11459 | void | |
fba45db2 | 11460 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11461 | { |
35df4500 | 11462 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11463 | |
11464 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11465 | if (bs->breakpoint_at |
11466 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11467 | && bs->stop) |
f431efe5 | 11468 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11469 | |
35df4500 | 11470 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11471 | { |
b5de0fa7 | 11472 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11473 | delete_breakpoint (b); |
11474 | } | |
c906108c SS |
11475 | } |
11476 | ||
4a64f543 MS |
11477 | /* A comparison function for bp_location AP and BP being interfaced to |
11478 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11479 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11480 | secondarily by ordering first permanent elements and |
4a64f543 | 11481 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11482 | qsort being an unstable algorithm. */ |
876fa593 JK |
11483 | |
11484 | static int | |
f5336ca5 | 11485 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11486 | { |
9a3c8263 SM |
11487 | const struct bp_location *a = *(const struct bp_location **) ap; |
11488 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11489 | |
11490 | if (a->address != b->address) | |
11491 | return (a->address > b->address) - (a->address < b->address); | |
11492 | ||
dea2aa5f LM |
11493 | /* Sort locations at the same address by their pspace number, keeping |
11494 | locations of the same inferior (in a multi-inferior environment) | |
11495 | grouped. */ | |
11496 | ||
11497 | if (a->pspace->num != b->pspace->num) | |
11498 | return ((a->pspace->num > b->pspace->num) | |
11499 | - (a->pspace->num < b->pspace->num)); | |
11500 | ||
876fa593 | 11501 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11502 | if (a->permanent != b->permanent) |
11503 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11504 | |
c56a97f9 JK |
11505 | /* Make the internal GDB representation stable across GDB runs |
11506 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11507 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11508 | |
11509 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11510 | return ((a->owner->number > b->owner->number) |
11511 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11512 | |
11513 | return (a > b) - (a < b); | |
11514 | } | |
11515 | ||
f5336ca5 PA |
11516 | /* Set bp_locations_placed_address_before_address_max and |
11517 | bp_locations_shadow_len_after_address_max according to the current | |
11518 | content of the bp_locations array. */ | |
f7545552 TT |
11519 | |
11520 | static void | |
f5336ca5 | 11521 | bp_locations_target_extensions_update (void) |
f7545552 | 11522 | { |
876fa593 JK |
11523 | struct bp_location *bl, **blp_tmp; |
11524 | ||
f5336ca5 PA |
11525 | bp_locations_placed_address_before_address_max = 0; |
11526 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11527 | |
11528 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11529 | { | |
11530 | CORE_ADDR start, end, addr; | |
11531 | ||
11532 | if (!bp_location_has_shadow (bl)) | |
11533 | continue; | |
11534 | ||
11535 | start = bl->target_info.placed_address; | |
11536 | end = start + bl->target_info.shadow_len; | |
11537 | ||
11538 | gdb_assert (bl->address >= start); | |
11539 | addr = bl->address - start; | |
f5336ca5 PA |
11540 | if (addr > bp_locations_placed_address_before_address_max) |
11541 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11542 | |
11543 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11544 | ||
11545 | gdb_assert (bl->address < end); | |
11546 | addr = end - bl->address; | |
f5336ca5 PA |
11547 | if (addr > bp_locations_shadow_len_after_address_max) |
11548 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11549 | } |
f7545552 TT |
11550 | } |
11551 | ||
1e4d1764 YQ |
11552 | /* Download tracepoint locations if they haven't been. */ |
11553 | ||
11554 | static void | |
11555 | download_tracepoint_locations (void) | |
11556 | { | |
7ed2c994 | 11557 | struct breakpoint *b; |
dd2e65cc | 11558 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11559 | |
5ed8105e | 11560 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11561 | |
7ed2c994 | 11562 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11563 | { |
7ed2c994 | 11564 | struct bp_location *bl; |
1e4d1764 | 11565 | struct tracepoint *t; |
f2a8bc8a | 11566 | int bp_location_downloaded = 0; |
1e4d1764 | 11567 | |
7ed2c994 | 11568 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11569 | ? !may_insert_fast_tracepoints |
11570 | : !may_insert_tracepoints)) | |
11571 | continue; | |
11572 | ||
dd2e65cc YQ |
11573 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11574 | { | |
11575 | if (target_can_download_tracepoint ()) | |
11576 | can_download_tracepoint = TRIBOOL_TRUE; | |
11577 | else | |
11578 | can_download_tracepoint = TRIBOOL_FALSE; | |
11579 | } | |
11580 | ||
11581 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11582 | break; | |
11583 | ||
7ed2c994 YQ |
11584 | for (bl = b->loc; bl; bl = bl->next) |
11585 | { | |
11586 | /* In tracepoint, locations are _never_ duplicated, so | |
11587 | should_be_inserted is equivalent to | |
11588 | unduplicated_should_be_inserted. */ | |
11589 | if (!should_be_inserted (bl) || bl->inserted) | |
11590 | continue; | |
1e4d1764 | 11591 | |
7ed2c994 | 11592 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11593 | |
7ed2c994 | 11594 | target_download_tracepoint (bl); |
1e4d1764 | 11595 | |
7ed2c994 | 11596 | bl->inserted = 1; |
f2a8bc8a | 11597 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11598 | } |
11599 | t = (struct tracepoint *) b; | |
11600 | t->number_on_target = b->number; | |
f2a8bc8a | 11601 | if (bp_location_downloaded) |
76727919 | 11602 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11603 | } |
1e4d1764 YQ |
11604 | } |
11605 | ||
934709f0 PW |
11606 | /* Swap the insertion/duplication state between two locations. */ |
11607 | ||
11608 | static void | |
11609 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11610 | { | |
11611 | const int left_inserted = left->inserted; | |
11612 | const int left_duplicate = left->duplicate; | |
b775012e | 11613 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11614 | const struct bp_target_info left_target_info = left->target_info; |
11615 | ||
1e4d1764 YQ |
11616 | /* Locations of tracepoints can never be duplicated. */ |
11617 | if (is_tracepoint (left->owner)) | |
11618 | gdb_assert (!left->duplicate); | |
11619 | if (is_tracepoint (right->owner)) | |
11620 | gdb_assert (!right->duplicate); | |
11621 | ||
934709f0 PW |
11622 | left->inserted = right->inserted; |
11623 | left->duplicate = right->duplicate; | |
b775012e | 11624 | left->needs_update = right->needs_update; |
934709f0 PW |
11625 | left->target_info = right->target_info; |
11626 | right->inserted = left_inserted; | |
11627 | right->duplicate = left_duplicate; | |
b775012e | 11628 | right->needs_update = left_needs_update; |
934709f0 PW |
11629 | right->target_info = left_target_info; |
11630 | } | |
11631 | ||
b775012e LM |
11632 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11633 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11634 | conditions on the target's side. Such conditions need to be updated on | |
11635 | the target. */ | |
11636 | ||
11637 | static void | |
11638 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11639 | { | |
11640 | struct bp_location **locp = NULL, **loc2p; | |
11641 | struct bp_location *loc; | |
11642 | CORE_ADDR address = 0; | |
11643 | int pspace_num; | |
11644 | ||
11645 | address = bl->address; | |
11646 | pspace_num = bl->pspace->num; | |
11647 | ||
11648 | /* This is only meaningful if the target is | |
11649 | evaluating conditions and if the user has | |
11650 | opted for condition evaluation on the target's | |
11651 | side. */ | |
11652 | if (gdb_evaluates_breakpoint_condition_p () | |
11653 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11654 | return; | |
11655 | ||
11656 | /* Flag all breakpoint locations with this address and | |
11657 | the same program space as the location | |
11658 | as "its condition has changed". We need to | |
11659 | update the conditions on the target's side. */ | |
11660 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11661 | { | |
11662 | loc = *loc2p; | |
11663 | ||
11664 | if (!is_breakpoint (loc->owner) | |
11665 | || pspace_num != loc->pspace->num) | |
11666 | continue; | |
11667 | ||
11668 | /* Flag the location appropriately. We use a different state to | |
11669 | let everyone know that we already updated the set of locations | |
11670 | with addr bl->address and program space bl->pspace. This is so | |
11671 | we don't have to keep calling these functions just to mark locations | |
11672 | that have already been marked. */ | |
11673 | loc->condition_changed = condition_updated; | |
11674 | ||
11675 | /* Free the agent expression bytecode as well. We will compute | |
11676 | it later on. */ | |
833177a4 | 11677 | loc->cond_bytecode.reset (); |
b775012e LM |
11678 | } |
11679 | } | |
44702360 PA |
11680 | /* Called whether new breakpoints are created, or existing breakpoints |
11681 | deleted, to update the global location list and recompute which | |
11682 | locations are duplicate of which. | |
b775012e | 11683 | |
04086b45 PA |
11684 | The INSERT_MODE flag determines whether locations may not, may, or |
11685 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11686 | info. */ | |
b60e7edf | 11687 | |
0d381245 | 11688 | static void |
44702360 | 11689 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11690 | { |
74960c60 | 11691 | struct breakpoint *b; |
876fa593 | 11692 | struct bp_location **locp, *loc; |
b775012e LM |
11693 | /* Last breakpoint location address that was marked for update. */ |
11694 | CORE_ADDR last_addr = 0; | |
11695 | /* Last breakpoint location program space that was marked for update. */ | |
11696 | int last_pspace_num = -1; | |
f7545552 | 11697 | |
2d134ed3 PA |
11698 | /* Used in the duplicates detection below. When iterating over all |
11699 | bp_locations, points to the first bp_location of a given address. | |
11700 | Breakpoints and watchpoints of different types are never | |
11701 | duplicates of each other. Keep one pointer for each type of | |
11702 | breakpoint/watchpoint, so we only need to loop over all locations | |
11703 | once. */ | |
11704 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11705 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11706 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11707 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11708 | |
f5336ca5 PA |
11709 | /* Saved former bp_locations array which we compare against the newly |
11710 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11711 | struct bp_location **old_locp; |
f5336ca5 | 11712 | unsigned old_locations_count; |
81b1e71c | 11713 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11714 | |
f5336ca5 PA |
11715 | old_locations_count = bp_locations_count; |
11716 | bp_locations = NULL; | |
11717 | bp_locations_count = 0; | |
0d381245 | 11718 | |
74960c60 | 11719 | ALL_BREAKPOINTS (b) |
876fa593 | 11720 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11721 | bp_locations_count++; |
876fa593 | 11722 | |
f5336ca5 PA |
11723 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11724 | locp = bp_locations; | |
876fa593 JK |
11725 | ALL_BREAKPOINTS (b) |
11726 | for (loc = b->loc; loc; loc = loc->next) | |
11727 | *locp++ = loc; | |
f5336ca5 PA |
11728 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11729 | bp_locations_compare); | |
876fa593 | 11730 | |
f5336ca5 | 11731 | bp_locations_target_extensions_update (); |
74960c60 | 11732 | |
4a64f543 MS |
11733 | /* Identify bp_location instances that are no longer present in the |
11734 | new list, and therefore should be freed. Note that it's not | |
11735 | necessary that those locations should be removed from inferior -- | |
11736 | if there's another location at the same address (previously | |
11737 | marked as duplicate), we don't need to remove/insert the | |
11738 | location. | |
876fa593 | 11739 | |
4a64f543 MS |
11740 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11741 | and former bp_location array state respectively. */ | |
876fa593 | 11742 | |
f5336ca5 | 11743 | locp = bp_locations; |
81b1e71c TT |
11744 | for (old_locp = old_locations.get (); |
11745 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11746 | old_locp++) |
74960c60 | 11747 | { |
876fa593 | 11748 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11749 | struct bp_location **loc2p; |
876fa593 | 11750 | |
e5dd4106 | 11751 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11752 | not, we have to free it. */ |
c7d46a38 | 11753 | int found_object = 0; |
20874c92 VP |
11754 | /* Tells if the location should remain inserted in the target. */ |
11755 | int keep_in_target = 0; | |
11756 | int removed = 0; | |
876fa593 | 11757 | |
4a64f543 MS |
11758 | /* Skip LOCP entries which will definitely never be needed. |
11759 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11760 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11761 | && (*locp)->address < old_loc->address) |
876fa593 | 11762 | locp++; |
c7d46a38 PA |
11763 | |
11764 | for (loc2p = locp; | |
f5336ca5 | 11765 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11766 | && (*loc2p)->address == old_loc->address); |
11767 | loc2p++) | |
11768 | { | |
b775012e LM |
11769 | /* Check if this is a new/duplicated location or a duplicated |
11770 | location that had its condition modified. If so, we want to send | |
11771 | its condition to the target if evaluation of conditions is taking | |
11772 | place there. */ | |
11773 | if ((*loc2p)->condition_changed == condition_modified | |
11774 | && (last_addr != old_loc->address | |
11775 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11776 | { |
b775012e LM |
11777 | force_breakpoint_reinsertion (*loc2p); |
11778 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11779 | } |
b775012e LM |
11780 | |
11781 | if (*loc2p == old_loc) | |
11782 | found_object = 1; | |
c7d46a38 | 11783 | } |
74960c60 | 11784 | |
b775012e LM |
11785 | /* We have already handled this address, update it so that we don't |
11786 | have to go through updates again. */ | |
11787 | last_addr = old_loc->address; | |
11788 | ||
11789 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11790 | if (!found_object) | |
11791 | force_breakpoint_reinsertion (old_loc); | |
11792 | ||
4a64f543 MS |
11793 | /* If this location is no longer present, and inserted, look if |
11794 | there's maybe a new location at the same address. If so, | |
11795 | mark that one inserted, and don't remove this one. This is | |
11796 | needed so that we don't have a time window where a breakpoint | |
11797 | at certain location is not inserted. */ | |
74960c60 | 11798 | |
876fa593 | 11799 | if (old_loc->inserted) |
0d381245 | 11800 | { |
4a64f543 MS |
11801 | /* If the location is inserted now, we might have to remove |
11802 | it. */ | |
74960c60 | 11803 | |
876fa593 | 11804 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11805 | { |
4a64f543 MS |
11806 | /* The location is still present in the location list, |
11807 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11808 | keep_in_target = 1; |
74960c60 VP |
11809 | } |
11810 | else | |
11811 | { | |
b775012e LM |
11812 | /* This location still exists, but it won't be kept in the |
11813 | target since it may have been disabled. We proceed to | |
11814 | remove its target-side condition. */ | |
11815 | ||
4a64f543 MS |
11816 | /* The location is either no longer present, or got |
11817 | disabled. See if there's another location at the | |
11818 | same address, in which case we don't need to remove | |
11819 | this one from the target. */ | |
876fa593 | 11820 | |
2bdf28a0 | 11821 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11822 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11823 | { | |
876fa593 | 11824 | for (loc2p = locp; |
f5336ca5 | 11825 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11826 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11827 | loc2p++) |
11828 | { | |
11829 | struct bp_location *loc2 = *loc2p; | |
11830 | ||
2d134ed3 | 11831 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11832 | { |
85d721b8 PA |
11833 | /* Read watchpoint locations are switched to |
11834 | access watchpoints, if the former are not | |
11835 | supported, but the latter are. */ | |
11836 | if (is_hardware_watchpoint (old_loc->owner)) | |
11837 | { | |
11838 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11839 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11840 | } | |
11841 | ||
934709f0 PW |
11842 | /* loc2 is a duplicated location. We need to check |
11843 | if it should be inserted in case it will be | |
11844 | unduplicated. */ | |
11845 | if (loc2 != old_loc | |
11846 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11847 | { |
934709f0 | 11848 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11849 | keep_in_target = 1; |
11850 | break; | |
11851 | } | |
876fa593 JK |
11852 | } |
11853 | } | |
11854 | } | |
74960c60 VP |
11855 | } |
11856 | ||
20874c92 VP |
11857 | if (!keep_in_target) |
11858 | { | |
834c0d03 | 11859 | if (remove_breakpoint (old_loc)) |
20874c92 | 11860 | { |
4a64f543 MS |
11861 | /* This is just about all we can do. We could keep |
11862 | this location on the global list, and try to | |
11863 | remove it next time, but there's no particular | |
11864 | reason why we will succeed next time. | |
20874c92 | 11865 | |
4a64f543 MS |
11866 | Note that at this point, old_loc->owner is still |
11867 | valid, as delete_breakpoint frees the breakpoint | |
11868 | only after calling us. */ | |
3e43a32a MS |
11869 | printf_filtered (_("warning: Error removing " |
11870 | "breakpoint %d\n"), | |
876fa593 | 11871 | old_loc->owner->number); |
20874c92 VP |
11872 | } |
11873 | removed = 1; | |
11874 | } | |
0d381245 | 11875 | } |
74960c60 VP |
11876 | |
11877 | if (!found_object) | |
1c5cfe86 | 11878 | { |
fbea99ea | 11879 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11880 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11881 | { |
db82e815 PA |
11882 | /* This location was removed from the target. In |
11883 | non-stop mode, a race condition is possible where | |
11884 | we've removed a breakpoint, but stop events for that | |
11885 | breakpoint are already queued and will arrive later. | |
11886 | We apply an heuristic to be able to distinguish such | |
11887 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11888 | breakpoint location for a bit, and will retire it | |
11889 | after we see some number of events. The theory here | |
11890 | is that reporting of events should, "on the average", | |
11891 | be fair, so after a while we'll see events from all | |
11892 | threads that have anything of interest, and no longer | |
11893 | need to keep this breakpoint location around. We | |
11894 | don't hold locations forever so to reduce chances of | |
11895 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11896 | SIGTRAP. | |
11897 | ||
11898 | The heuristic failing can be disastrous on | |
11899 | decr_pc_after_break targets. | |
11900 | ||
11901 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11902 | if we fail to recognize a late breakpoint SIGTRAP, | |
11903 | because events_till_retirement has reached 0 too | |
11904 | soon, we'll fail to do the PC adjustment, and report | |
11905 | a random SIGTRAP to the user. When the user resumes | |
11906 | the inferior, it will most likely immediately crash | |
2dec564e | 11907 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11908 | corrupted, because of being resumed e.g., in the |
11909 | middle of a multi-byte instruction, or skipped a | |
11910 | one-byte instruction. This was actually seen happen | |
11911 | on native x86-linux, and should be less rare on | |
11912 | targets that do not support new thread events, like | |
11913 | remote, due to the heuristic depending on | |
11914 | thread_count. | |
11915 | ||
11916 | Mistaking a random SIGTRAP for a breakpoint trap | |
11917 | causes similar symptoms (PC adjustment applied when | |
11918 | it shouldn't), but then again, playing with SIGTRAPs | |
11919 | behind the debugger's back is asking for trouble. | |
11920 | ||
11921 | Since hardware watchpoint traps are always | |
11922 | distinguishable from other traps, so we don't need to | |
11923 | apply keep hardware watchpoint moribund locations | |
11924 | around. We simply always ignore hardware watchpoint | |
11925 | traps we can no longer explain. */ | |
11926 | ||
876fa593 JK |
11927 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11928 | old_loc->owner = NULL; | |
20874c92 | 11929 | |
1123588c | 11930 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11931 | } |
11932 | else | |
f431efe5 PA |
11933 | { |
11934 | old_loc->owner = NULL; | |
11935 | decref_bp_location (&old_loc); | |
11936 | } | |
20874c92 | 11937 | } |
74960c60 | 11938 | } |
1c5cfe86 | 11939 | |
348d480f PA |
11940 | /* Rescan breakpoints at the same address and section, marking the |
11941 | first one as "first" and any others as "duplicates". This is so | |
11942 | that the bpt instruction is only inserted once. If we have a | |
11943 | permanent breakpoint at the same place as BPT, make that one the | |
11944 | official one, and the rest as duplicates. Permanent breakpoints | |
11945 | are sorted first for the same address. | |
11946 | ||
11947 | Do the same for hardware watchpoints, but also considering the | |
11948 | watchpoint's type (regular/access/read) and length. */ | |
11949 | ||
11950 | bp_loc_first = NULL; | |
11951 | wp_loc_first = NULL; | |
11952 | awp_loc_first = NULL; | |
11953 | rwp_loc_first = NULL; | |
11954 | ALL_BP_LOCATIONS (loc, locp) | |
11955 | { | |
11956 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11957 | non-NULL. */ | |
348d480f | 11958 | struct bp_location **loc_first_p; |
d3fbdd86 | 11959 | b = loc->owner; |
348d480f | 11960 | |
6f380991 | 11961 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 11962 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
11963 | /* Don't detect duplicate for tracepoint locations because they are |
11964 | never duplicated. See the comments in field `duplicate' of | |
11965 | `struct bp_location'. */ | |
348d480f | 11966 | || is_tracepoint (b)) |
b775012e LM |
11967 | { |
11968 | /* Clear the condition modification flag. */ | |
11969 | loc->condition_changed = condition_unchanged; | |
11970 | continue; | |
11971 | } | |
348d480f | 11972 | |
348d480f PA |
11973 | if (b->type == bp_hardware_watchpoint) |
11974 | loc_first_p = &wp_loc_first; | |
11975 | else if (b->type == bp_read_watchpoint) | |
11976 | loc_first_p = &rwp_loc_first; | |
11977 | else if (b->type == bp_access_watchpoint) | |
11978 | loc_first_p = &awp_loc_first; | |
11979 | else | |
11980 | loc_first_p = &bp_loc_first; | |
11981 | ||
11982 | if (*loc_first_p == NULL | |
11983 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11984 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11985 | { | |
11986 | *loc_first_p = loc; | |
11987 | loc->duplicate = 0; | |
b775012e LM |
11988 | |
11989 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11990 | { | |
11991 | loc->needs_update = 1; | |
11992 | /* Clear the condition modification flag. */ | |
11993 | loc->condition_changed = condition_unchanged; | |
11994 | } | |
348d480f PA |
11995 | continue; |
11996 | } | |
11997 | ||
934709f0 PW |
11998 | |
11999 | /* This and the above ensure the invariant that the first location | |
12000 | is not duplicated, and is the inserted one. | |
12001 | All following are marked as duplicated, and are not inserted. */ | |
12002 | if (loc->inserted) | |
12003 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12004 | loc->duplicate = 1; |
12005 | ||
b775012e LM |
12006 | /* Clear the condition modification flag. */ |
12007 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12008 | } |
12009 | ||
a25a5a45 | 12010 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12011 | { |
04086b45 | 12012 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12013 | insert_breakpoint_locations (); |
12014 | else | |
12015 | { | |
44702360 PA |
12016 | /* Even though the caller told us to not insert new |
12017 | locations, we may still need to update conditions on the | |
12018 | target's side of breakpoints that were already inserted | |
12019 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12020 | only update conditions for locations that are marked |
12021 | "needs_update". */ | |
12022 | update_inserted_breakpoint_locations (); | |
12023 | } | |
12024 | } | |
348d480f | 12025 | |
04086b45 | 12026 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12027 | download_tracepoint_locations (); |
348d480f PA |
12028 | } |
12029 | ||
12030 | void | |
12031 | breakpoint_retire_moribund (void) | |
12032 | { | |
1123588c TT |
12033 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12034 | { | |
12035 | struct bp_location *loc = moribund_locations[ix]; | |
12036 | if (--(loc->events_till_retirement) == 0) | |
12037 | { | |
12038 | decref_bp_location (&loc); | |
12039 | unordered_remove (moribund_locations, ix); | |
12040 | --ix; | |
12041 | } | |
12042 | } | |
348d480f PA |
12043 | } |
12044 | ||
12045 | static void | |
44702360 | 12046 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12047 | { |
348d480f | 12048 | |
a70b8144 | 12049 | try |
492d29ea PA |
12050 | { |
12051 | update_global_location_list (insert_mode); | |
12052 | } | |
230d2906 | 12053 | catch (const gdb_exception_error &e) |
492d29ea PA |
12054 | { |
12055 | } | |
348d480f PA |
12056 | } |
12057 | ||
12058 | /* Clear BKP from a BPS. */ | |
12059 | ||
12060 | static void | |
12061 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12062 | { | |
12063 | bpstat bs; | |
12064 | ||
12065 | for (bs = bps; bs; bs = bs->next) | |
12066 | if (bs->breakpoint_at == bpt) | |
12067 | { | |
12068 | bs->breakpoint_at = NULL; | |
12069 | bs->old_val = NULL; | |
12070 | /* bs->commands will be freed later. */ | |
12071 | } | |
12072 | } | |
12073 | ||
12074 | /* Callback for iterate_over_threads. */ | |
12075 | static int | |
12076 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12077 | { | |
9a3c8263 | 12078 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12079 | |
12080 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12081 | return 0; | |
12082 | } | |
12083 | ||
12084 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12085 | callbacks. */ | |
12086 | ||
12087 | static void | |
12088 | say_where (struct breakpoint *b) | |
12089 | { | |
12090 | struct value_print_options opts; | |
12091 | ||
12092 | get_user_print_options (&opts); | |
12093 | ||
12094 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12095 | single string. */ | |
12096 | if (b->loc == NULL) | |
12097 | { | |
f00aae0f KS |
12098 | /* For pending locations, the output differs slightly based |
12099 | on b->extra_string. If this is non-NULL, it contains either | |
12100 | a condition or dprintf arguments. */ | |
12101 | if (b->extra_string == NULL) | |
12102 | { | |
12103 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12104 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12105 | } |
12106 | else if (b->type == bp_dprintf) | |
12107 | { | |
12108 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12109 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12110 | b->extra_string); |
12111 | } | |
12112 | else | |
12113 | { | |
12114 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12115 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12116 | b->extra_string); |
12117 | } | |
348d480f PA |
12118 | } |
12119 | else | |
12120 | { | |
2f202fde | 12121 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12122 | { |
12123 | printf_filtered (" at "); | |
2636d81d PW |
12124 | fputs_styled (paddress (b->loc->gdbarch, b->loc->address), |
12125 | address_style.style (), | |
12126 | gdb_stdout); | |
348d480f | 12127 | } |
2f202fde | 12128 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12129 | { |
12130 | /* If there is a single location, we can print the location | |
12131 | more nicely. */ | |
12132 | if (b->loc->next == NULL) | |
0bb296cb TT |
12133 | { |
12134 | puts_filtered (": file "); | |
12135 | fputs_styled (symtab_to_filename_for_display (b->loc->symtab), | |
12136 | file_name_style.style (), | |
12137 | gdb_stdout); | |
12138 | printf_filtered (", line %d.", | |
12139 | b->loc->line_number); | |
12140 | } | |
f8eba3c6 TT |
12141 | else |
12142 | /* This is not ideal, but each location may have a | |
12143 | different file name, and this at least reflects the | |
12144 | real situation somewhat. */ | |
f00aae0f | 12145 | printf_filtered (": %s.", |
d28cd78a | 12146 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12147 | } |
348d480f PA |
12148 | |
12149 | if (b->loc->next) | |
12150 | { | |
12151 | struct bp_location *loc = b->loc; | |
12152 | int n = 0; | |
12153 | for (; loc; loc = loc->next) | |
12154 | ++n; | |
12155 | printf_filtered (" (%d locations)", n); | |
12156 | } | |
12157 | } | |
12158 | } | |
12159 | ||
5f486660 | 12160 | bp_location::~bp_location () |
348d480f | 12161 | { |
5f486660 | 12162 | xfree (function_name); |
348d480f PA |
12163 | } |
12164 | ||
c1fc2657 | 12165 | /* Destructor for the breakpoint base class. */ |
348d480f | 12166 | |
c1fc2657 | 12167 | breakpoint::~breakpoint () |
348d480f | 12168 | { |
c1fc2657 SM |
12169 | xfree (this->cond_string); |
12170 | xfree (this->extra_string); | |
12171 | xfree (this->filter); | |
348d480f PA |
12172 | } |
12173 | ||
2060206e PA |
12174 | static struct bp_location * |
12175 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12176 | { |
5f486660 | 12177 | return new bp_location (self); |
348d480f PA |
12178 | } |
12179 | ||
2060206e PA |
12180 | static void |
12181 | base_breakpoint_re_set (struct breakpoint *b) | |
12182 | { | |
12183 | /* Nothing to re-set. */ | |
12184 | } | |
12185 | ||
12186 | #define internal_error_pure_virtual_called() \ | |
12187 | gdb_assert_not_reached ("pure virtual function called") | |
12188 | ||
12189 | static int | |
12190 | base_breakpoint_insert_location (struct bp_location *bl) | |
12191 | { | |
12192 | internal_error_pure_virtual_called (); | |
12193 | } | |
12194 | ||
12195 | static int | |
73971819 PA |
12196 | base_breakpoint_remove_location (struct bp_location *bl, |
12197 | enum remove_bp_reason reason) | |
2060206e PA |
12198 | { |
12199 | internal_error_pure_virtual_called (); | |
12200 | } | |
12201 | ||
12202 | static int | |
12203 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12204 | const address_space *aspace, |
09ac7c10 TT |
12205 | CORE_ADDR bp_addr, |
12206 | const struct target_waitstatus *ws) | |
2060206e PA |
12207 | { |
12208 | internal_error_pure_virtual_called (); | |
12209 | } | |
12210 | ||
12211 | static void | |
12212 | base_breakpoint_check_status (bpstat bs) | |
12213 | { | |
12214 | /* Always stop. */ | |
12215 | } | |
12216 | ||
12217 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12218 | errors. */ | |
12219 | ||
12220 | static int | |
12221 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12222 | { | |
12223 | internal_error_pure_virtual_called (); | |
12224 | } | |
12225 | ||
12226 | /* A "resources_needed" breakpoint_ops method that just internal | |
12227 | errors. */ | |
12228 | ||
12229 | static int | |
12230 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12231 | { | |
12232 | internal_error_pure_virtual_called (); | |
12233 | } | |
12234 | ||
12235 | static enum print_stop_action | |
12236 | base_breakpoint_print_it (bpstat bs) | |
12237 | { | |
12238 | internal_error_pure_virtual_called (); | |
12239 | } | |
12240 | ||
12241 | static void | |
12242 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12243 | struct ui_out *uiout) | |
12244 | { | |
12245 | /* nothing */ | |
12246 | } | |
12247 | ||
12248 | static void | |
12249 | base_breakpoint_print_mention (struct breakpoint *b) | |
12250 | { | |
12251 | internal_error_pure_virtual_called (); | |
12252 | } | |
12253 | ||
12254 | static void | |
12255 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12256 | { | |
12257 | internal_error_pure_virtual_called (); | |
12258 | } | |
12259 | ||
983af33b | 12260 | static void |
f00aae0f KS |
12261 | base_breakpoint_create_sals_from_location |
12262 | (const struct event_location *location, | |
12263 | struct linespec_result *canonical, | |
12264 | enum bptype type_wanted) | |
983af33b SDJ |
12265 | { |
12266 | internal_error_pure_virtual_called (); | |
12267 | } | |
12268 | ||
12269 | static void | |
12270 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12271 | struct linespec_result *c, | |
e1e01040 PA |
12272 | gdb::unique_xmalloc_ptr<char> cond_string, |
12273 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12274 | enum bptype type_wanted, |
12275 | enum bpdisp disposition, | |
12276 | int thread, | |
12277 | int task, int ignore_count, | |
12278 | const struct breakpoint_ops *o, | |
12279 | int from_tty, int enabled, | |
44f238bb | 12280 | int internal, unsigned flags) |
983af33b SDJ |
12281 | { |
12282 | internal_error_pure_virtual_called (); | |
12283 | } | |
12284 | ||
6c5b2ebe | 12285 | static std::vector<symtab_and_line> |
f00aae0f KS |
12286 | base_breakpoint_decode_location (struct breakpoint *b, |
12287 | const struct event_location *location, | |
6c5b2ebe | 12288 | struct program_space *search_pspace) |
983af33b SDJ |
12289 | { |
12290 | internal_error_pure_virtual_called (); | |
12291 | } | |
12292 | ||
ab04a2af TT |
12293 | /* The default 'explains_signal' method. */ |
12294 | ||
47591c29 | 12295 | static int |
427cd150 | 12296 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12297 | { |
47591c29 | 12298 | return 1; |
ab04a2af TT |
12299 | } |
12300 | ||
9d6e6e84 HZ |
12301 | /* The default "after_condition_true" method. */ |
12302 | ||
12303 | static void | |
12304 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12305 | { | |
12306 | /* Nothing to do. */ | |
12307 | } | |
12308 | ||
ab04a2af | 12309 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12310 | { |
2060206e PA |
12311 | base_breakpoint_allocate_location, |
12312 | base_breakpoint_re_set, | |
12313 | base_breakpoint_insert_location, | |
12314 | base_breakpoint_remove_location, | |
12315 | base_breakpoint_breakpoint_hit, | |
12316 | base_breakpoint_check_status, | |
12317 | base_breakpoint_resources_needed, | |
12318 | base_breakpoint_works_in_software_mode, | |
12319 | base_breakpoint_print_it, | |
12320 | NULL, | |
12321 | base_breakpoint_print_one_detail, | |
12322 | base_breakpoint_print_mention, | |
983af33b | 12323 | base_breakpoint_print_recreate, |
5f700d83 | 12324 | base_breakpoint_create_sals_from_location, |
983af33b | 12325 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12326 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12327 | base_breakpoint_explains_signal, |
12328 | base_breakpoint_after_condition_true, | |
2060206e PA |
12329 | }; |
12330 | ||
12331 | /* Default breakpoint_ops methods. */ | |
12332 | ||
12333 | static void | |
348d480f PA |
12334 | bkpt_re_set (struct breakpoint *b) |
12335 | { | |
06edf0c0 | 12336 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12337 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12338 | { |
f00aae0f | 12339 | /* Anything without a location can't be re-set. */ |
348d480f | 12340 | delete_breakpoint (b); |
06edf0c0 | 12341 | return; |
348d480f | 12342 | } |
06edf0c0 PA |
12343 | |
12344 | breakpoint_re_set_default (b); | |
348d480f PA |
12345 | } |
12346 | ||
2060206e | 12347 | static int |
348d480f PA |
12348 | bkpt_insert_location (struct bp_location *bl) |
12349 | { | |
cd6c3b4f YQ |
12350 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12351 | ||
579c6ad9 | 12352 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12353 | bl->target_info.placed_address = addr; |
12354 | ||
348d480f | 12355 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12356 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12357 | else |
7c16b83e | 12358 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12359 | } |
12360 | ||
2060206e | 12361 | static int |
73971819 | 12362 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12363 | { |
12364 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12365 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12366 | else | |
73971819 | 12367 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12368 | } |
12369 | ||
2060206e | 12370 | static int |
348d480f | 12371 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12372 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12373 | const struct target_waitstatus *ws) |
348d480f | 12374 | { |
09ac7c10 | 12375 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12376 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12377 | return 0; |
12378 | ||
348d480f PA |
12379 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12380 | aspace, bp_addr)) | |
12381 | return 0; | |
12382 | ||
12383 | if (overlay_debugging /* unmapped overlay section */ | |
12384 | && section_is_overlay (bl->section) | |
12385 | && !section_is_mapped (bl->section)) | |
12386 | return 0; | |
12387 | ||
12388 | return 1; | |
12389 | } | |
12390 | ||
cd1608cc PA |
12391 | static int |
12392 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12393 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12394 | const struct target_waitstatus *ws) |
12395 | { | |
12396 | if (dprintf_style == dprintf_style_agent | |
12397 | && target_can_run_breakpoint_commands ()) | |
12398 | { | |
12399 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12400 | for this address it must be for a breakpoint that happens to | |
12401 | be set at the same address. */ | |
12402 | return 0; | |
12403 | } | |
12404 | ||
12405 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12406 | } | |
12407 | ||
2060206e | 12408 | static int |
348d480f PA |
12409 | bkpt_resources_needed (const struct bp_location *bl) |
12410 | { | |
12411 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12412 | ||
12413 | return 1; | |
12414 | } | |
12415 | ||
2060206e | 12416 | static enum print_stop_action |
348d480f PA |
12417 | bkpt_print_it (bpstat bs) |
12418 | { | |
348d480f PA |
12419 | struct breakpoint *b; |
12420 | const struct bp_location *bl; | |
001c8c33 | 12421 | int bp_temp; |
79a45e25 | 12422 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12423 | |
12424 | gdb_assert (bs->bp_location_at != NULL); | |
12425 | ||
12426 | bl = bs->bp_location_at; | |
12427 | b = bs->breakpoint_at; | |
12428 | ||
001c8c33 PA |
12429 | bp_temp = b->disposition == disp_del; |
12430 | if (bl->address != bl->requested_address) | |
12431 | breakpoint_adjustment_warning (bl->requested_address, | |
12432 | bl->address, | |
12433 | b->number, 1); | |
12434 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12435 | maybe_print_thread_hit_breakpoint (uiout); |
12436 | ||
001c8c33 | 12437 | if (bp_temp) |
112e8700 | 12438 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12439 | else |
112e8700 SM |
12440 | uiout->text ("Breakpoint "); |
12441 | if (uiout->is_mi_like_p ()) | |
348d480f | 12442 | { |
112e8700 | 12443 | uiout->field_string ("reason", |
001c8c33 | 12444 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12445 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12446 | } |
112e8700 SM |
12447 | uiout->field_int ("bkptno", b->number); |
12448 | uiout->text (", "); | |
06edf0c0 | 12449 | |
001c8c33 | 12450 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12451 | } |
12452 | ||
2060206e | 12453 | static void |
06edf0c0 PA |
12454 | bkpt_print_mention (struct breakpoint *b) |
12455 | { | |
112e8700 | 12456 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12457 | return; |
12458 | ||
12459 | switch (b->type) | |
12460 | { | |
12461 | case bp_breakpoint: | |
12462 | case bp_gnu_ifunc_resolver: | |
12463 | if (b->disposition == disp_del) | |
12464 | printf_filtered (_("Temporary breakpoint")); | |
12465 | else | |
12466 | printf_filtered (_("Breakpoint")); | |
12467 | printf_filtered (_(" %d"), b->number); | |
12468 | if (b->type == bp_gnu_ifunc_resolver) | |
12469 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12470 | break; | |
12471 | case bp_hardware_breakpoint: | |
12472 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12473 | break; | |
e7e0cddf SS |
12474 | case bp_dprintf: |
12475 | printf_filtered (_("Dprintf %d"), b->number); | |
12476 | break; | |
06edf0c0 PA |
12477 | } |
12478 | ||
12479 | say_where (b); | |
12480 | } | |
12481 | ||
2060206e | 12482 | static void |
06edf0c0 PA |
12483 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12484 | { | |
12485 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12486 | fprintf_unfiltered (fp, "tbreak"); | |
12487 | else if (tp->type == bp_breakpoint) | |
12488 | fprintf_unfiltered (fp, "break"); | |
12489 | else if (tp->type == bp_hardware_breakpoint | |
12490 | && tp->disposition == disp_del) | |
12491 | fprintf_unfiltered (fp, "thbreak"); | |
12492 | else if (tp->type == bp_hardware_breakpoint) | |
12493 | fprintf_unfiltered (fp, "hbreak"); | |
12494 | else | |
12495 | internal_error (__FILE__, __LINE__, | |
12496 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12497 | ||
f00aae0f | 12498 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12499 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12500 | |
12501 | /* Print out extra_string if this breakpoint is pending. It might | |
12502 | contain, for example, conditions that were set by the user. */ | |
12503 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12504 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12505 | ||
dd11a36c | 12506 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12507 | } |
12508 | ||
983af33b | 12509 | static void |
f00aae0f KS |
12510 | bkpt_create_sals_from_location (const struct event_location *location, |
12511 | struct linespec_result *canonical, | |
12512 | enum bptype type_wanted) | |
983af33b | 12513 | { |
f00aae0f | 12514 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12515 | } |
12516 | ||
12517 | static void | |
12518 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12519 | struct linespec_result *canonical, | |
e1e01040 PA |
12520 | gdb::unique_xmalloc_ptr<char> cond_string, |
12521 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12522 | enum bptype type_wanted, |
12523 | enum bpdisp disposition, | |
12524 | int thread, | |
12525 | int task, int ignore_count, | |
12526 | const struct breakpoint_ops *ops, | |
12527 | int from_tty, int enabled, | |
44f238bb | 12528 | int internal, unsigned flags) |
983af33b | 12529 | { |
023fa29b | 12530 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12531 | std::move (cond_string), |
12532 | std::move (extra_string), | |
e7e0cddf | 12533 | type_wanted, |
983af33b SDJ |
12534 | disposition, thread, task, |
12535 | ignore_count, ops, from_tty, | |
44f238bb | 12536 | enabled, internal, flags); |
983af33b SDJ |
12537 | } |
12538 | ||
6c5b2ebe | 12539 | static std::vector<symtab_and_line> |
f00aae0f KS |
12540 | bkpt_decode_location (struct breakpoint *b, |
12541 | const struct event_location *location, | |
6c5b2ebe | 12542 | struct program_space *search_pspace) |
983af33b | 12543 | { |
6c5b2ebe | 12544 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12545 | } |
12546 | ||
06edf0c0 PA |
12547 | /* Virtual table for internal breakpoints. */ |
12548 | ||
12549 | static void | |
12550 | internal_bkpt_re_set (struct breakpoint *b) | |
12551 | { | |
12552 | switch (b->type) | |
12553 | { | |
12554 | /* Delete overlay event and longjmp master breakpoints; they | |
12555 | will be reset later by breakpoint_re_set. */ | |
12556 | case bp_overlay_event: | |
12557 | case bp_longjmp_master: | |
12558 | case bp_std_terminate_master: | |
12559 | case bp_exception_master: | |
12560 | delete_breakpoint (b); | |
12561 | break; | |
12562 | ||
12563 | /* This breakpoint is special, it's set up when the inferior | |
12564 | starts and we really don't want to touch it. */ | |
12565 | case bp_shlib_event: | |
12566 | ||
12567 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12568 | it is set up, we do not want to touch it. */ | |
12569 | case bp_thread_event: | |
12570 | break; | |
12571 | } | |
12572 | } | |
12573 | ||
12574 | static void | |
12575 | internal_bkpt_check_status (bpstat bs) | |
12576 | { | |
a9b3a50f PA |
12577 | if (bs->breakpoint_at->type == bp_shlib_event) |
12578 | { | |
12579 | /* If requested, stop when the dynamic linker notifies GDB of | |
12580 | events. This allows the user to get control and place | |
12581 | breakpoints in initializer routines for dynamically loaded | |
12582 | objects (among other things). */ | |
12583 | bs->stop = stop_on_solib_events; | |
12584 | bs->print = stop_on_solib_events; | |
12585 | } | |
12586 | else | |
12587 | bs->stop = 0; | |
06edf0c0 PA |
12588 | } |
12589 | ||
12590 | static enum print_stop_action | |
12591 | internal_bkpt_print_it (bpstat bs) | |
12592 | { | |
06edf0c0 | 12593 | struct breakpoint *b; |
06edf0c0 | 12594 | |
06edf0c0 PA |
12595 | b = bs->breakpoint_at; |
12596 | ||
06edf0c0 PA |
12597 | switch (b->type) |
12598 | { | |
348d480f PA |
12599 | case bp_shlib_event: |
12600 | /* Did we stop because the user set the stop_on_solib_events | |
12601 | variable? (If so, we report this as a generic, "Stopped due | |
12602 | to shlib event" message.) */ | |
edcc5120 | 12603 | print_solib_event (0); |
348d480f PA |
12604 | break; |
12605 | ||
12606 | case bp_thread_event: | |
12607 | /* Not sure how we will get here. | |
12608 | GDB should not stop for these breakpoints. */ | |
12609 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12610 | break; |
12611 | ||
12612 | case bp_overlay_event: | |
12613 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12614 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12615 | break; |
12616 | ||
12617 | case bp_longjmp_master: | |
12618 | /* These should never be enabled. */ | |
12619 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12620 | break; |
12621 | ||
12622 | case bp_std_terminate_master: | |
12623 | /* These should never be enabled. */ | |
12624 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12625 | "gdb should not stop!\n")); | |
348d480f PA |
12626 | break; |
12627 | ||
12628 | case bp_exception_master: | |
12629 | /* These should never be enabled. */ | |
12630 | printf_filtered (_("Exception Master Breakpoint: " | |
12631 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12632 | break; |
12633 | } | |
12634 | ||
001c8c33 | 12635 | return PRINT_NOTHING; |
06edf0c0 PA |
12636 | } |
12637 | ||
12638 | static void | |
12639 | internal_bkpt_print_mention (struct breakpoint *b) | |
12640 | { | |
12641 | /* Nothing to mention. These breakpoints are internal. */ | |
12642 | } | |
12643 | ||
06edf0c0 PA |
12644 | /* Virtual table for momentary breakpoints */ |
12645 | ||
12646 | static void | |
12647 | momentary_bkpt_re_set (struct breakpoint *b) | |
12648 | { | |
12649 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12650 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12651 | Otherwise these should have been blown away via the cleanup chain |
12652 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12653 | } | |
12654 | ||
12655 | static void | |
12656 | momentary_bkpt_check_status (bpstat bs) | |
12657 | { | |
12658 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12659 | } | |
12660 | ||
12661 | static enum print_stop_action | |
12662 | momentary_bkpt_print_it (bpstat bs) | |
12663 | { | |
001c8c33 | 12664 | return PRINT_UNKNOWN; |
348d480f PA |
12665 | } |
12666 | ||
06edf0c0 PA |
12667 | static void |
12668 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12669 | { |
06edf0c0 | 12670 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12671 | } |
12672 | ||
e2e4d78b JK |
12673 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12674 | ||
12675 | It gets cleared already on the removal of the first one of such placed | |
12676 | breakpoints. This is OK as they get all removed altogether. */ | |
12677 | ||
c1fc2657 | 12678 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12679 | { |
c1fc2657 | 12680 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12681 | |
c1fc2657 | 12682 | if (tp != NULL) |
e2e4d78b | 12683 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12684 | } |
12685 | ||
55aa24fb SDJ |
12686 | /* Specific methods for probe breakpoints. */ |
12687 | ||
12688 | static int | |
12689 | bkpt_probe_insert_location (struct bp_location *bl) | |
12690 | { | |
12691 | int v = bkpt_insert_location (bl); | |
12692 | ||
12693 | if (v == 0) | |
12694 | { | |
12695 | /* The insertion was successful, now let's set the probe's semaphore | |
12696 | if needed. */ | |
935676c9 | 12697 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12698 | } |
12699 | ||
12700 | return v; | |
12701 | } | |
12702 | ||
12703 | static int | |
73971819 PA |
12704 | bkpt_probe_remove_location (struct bp_location *bl, |
12705 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12706 | { |
12707 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12708 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12709 | |
73971819 | 12710 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12711 | } |
12712 | ||
12713 | static void | |
f00aae0f | 12714 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12715 | struct linespec_result *canonical, |
f00aae0f | 12716 | enum bptype type_wanted) |
55aa24fb SDJ |
12717 | { |
12718 | struct linespec_sals lsal; | |
12719 | ||
c2f4122d | 12720 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12721 | lsal.canonical |
12722 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12723 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12724 | } |
12725 | ||
6c5b2ebe | 12726 | static std::vector<symtab_and_line> |
f00aae0f KS |
12727 | bkpt_probe_decode_location (struct breakpoint *b, |
12728 | const struct event_location *location, | |
6c5b2ebe | 12729 | struct program_space *search_pspace) |
55aa24fb | 12730 | { |
6c5b2ebe PA |
12731 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12732 | if (sals.empty ()) | |
55aa24fb | 12733 | error (_("probe not found")); |
6c5b2ebe | 12734 | return sals; |
55aa24fb SDJ |
12735 | } |
12736 | ||
348d480f | 12737 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12738 | |
348d480f PA |
12739 | static void |
12740 | tracepoint_re_set (struct breakpoint *b) | |
12741 | { | |
12742 | breakpoint_re_set_default (b); | |
12743 | } | |
876fa593 | 12744 | |
348d480f PA |
12745 | static int |
12746 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12747 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12748 | const struct target_waitstatus *ws) |
348d480f PA |
12749 | { |
12750 | /* By definition, the inferior does not report stops at | |
12751 | tracepoints. */ | |
12752 | return 0; | |
74960c60 VP |
12753 | } |
12754 | ||
12755 | static void | |
348d480f PA |
12756 | tracepoint_print_one_detail (const struct breakpoint *self, |
12757 | struct ui_out *uiout) | |
74960c60 | 12758 | { |
d9b3f62e | 12759 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12760 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12761 | { |
12762 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12763 | |
112e8700 SM |
12764 | uiout->text ("\tmarker id is "); |
12765 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12766 | tp->static_trace_marker_id); |
112e8700 | 12767 | uiout->text ("\n"); |
348d480f | 12768 | } |
0d381245 VP |
12769 | } |
12770 | ||
a474d7c2 | 12771 | static void |
348d480f | 12772 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12773 | { |
112e8700 | 12774 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12775 | return; |
cc59ec59 | 12776 | |
348d480f PA |
12777 | switch (b->type) |
12778 | { | |
12779 | case bp_tracepoint: | |
12780 | printf_filtered (_("Tracepoint")); | |
12781 | printf_filtered (_(" %d"), b->number); | |
12782 | break; | |
12783 | case bp_fast_tracepoint: | |
12784 | printf_filtered (_("Fast tracepoint")); | |
12785 | printf_filtered (_(" %d"), b->number); | |
12786 | break; | |
12787 | case bp_static_tracepoint: | |
12788 | printf_filtered (_("Static tracepoint")); | |
12789 | printf_filtered (_(" %d"), b->number); | |
12790 | break; | |
12791 | default: | |
12792 | internal_error (__FILE__, __LINE__, | |
12793 | _("unhandled tracepoint type %d"), (int) b->type); | |
12794 | } | |
12795 | ||
12796 | say_where (b); | |
a474d7c2 PA |
12797 | } |
12798 | ||
348d480f | 12799 | static void |
d9b3f62e | 12800 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12801 | { |
d9b3f62e PA |
12802 | struct tracepoint *tp = (struct tracepoint *) self; |
12803 | ||
12804 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12805 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12806 | else if (self->type == bp_static_tracepoint) |
348d480f | 12807 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12808 | else if (self->type == bp_tracepoint) |
348d480f PA |
12809 | fprintf_unfiltered (fp, "trace"); |
12810 | else | |
12811 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12812 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12813 | |
f00aae0f | 12814 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12815 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12816 | print_recreate_thread (self, fp); |
12817 | ||
12818 | if (tp->pass_count) | |
12819 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12820 | } |
12821 | ||
983af33b | 12822 | static void |
f00aae0f KS |
12823 | tracepoint_create_sals_from_location (const struct event_location *location, |
12824 | struct linespec_result *canonical, | |
12825 | enum bptype type_wanted) | |
983af33b | 12826 | { |
f00aae0f | 12827 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12828 | } |
12829 | ||
12830 | static void | |
12831 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12832 | struct linespec_result *canonical, | |
e1e01040 PA |
12833 | gdb::unique_xmalloc_ptr<char> cond_string, |
12834 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12835 | enum bptype type_wanted, |
12836 | enum bpdisp disposition, | |
12837 | int thread, | |
12838 | int task, int ignore_count, | |
12839 | const struct breakpoint_ops *ops, | |
12840 | int from_tty, int enabled, | |
44f238bb | 12841 | int internal, unsigned flags) |
983af33b | 12842 | { |
023fa29b | 12843 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12844 | std::move (cond_string), |
12845 | std::move (extra_string), | |
e7e0cddf | 12846 | type_wanted, |
983af33b SDJ |
12847 | disposition, thread, task, |
12848 | ignore_count, ops, from_tty, | |
44f238bb | 12849 | enabled, internal, flags); |
983af33b SDJ |
12850 | } |
12851 | ||
6c5b2ebe | 12852 | static std::vector<symtab_and_line> |
f00aae0f KS |
12853 | tracepoint_decode_location (struct breakpoint *b, |
12854 | const struct event_location *location, | |
6c5b2ebe | 12855 | struct program_space *search_pspace) |
983af33b | 12856 | { |
6c5b2ebe | 12857 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12858 | } |
12859 | ||
2060206e | 12860 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12861 | |
55aa24fb SDJ |
12862 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12863 | static probe. */ | |
12864 | ||
12865 | static void | |
f00aae0f KS |
12866 | tracepoint_probe_create_sals_from_location |
12867 | (const struct event_location *location, | |
12868 | struct linespec_result *canonical, | |
12869 | enum bptype type_wanted) | |
55aa24fb SDJ |
12870 | { |
12871 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12872 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12873 | } |
12874 | ||
6c5b2ebe | 12875 | static std::vector<symtab_and_line> |
f00aae0f KS |
12876 | tracepoint_probe_decode_location (struct breakpoint *b, |
12877 | const struct event_location *location, | |
6c5b2ebe | 12878 | struct program_space *search_pspace) |
55aa24fb SDJ |
12879 | { |
12880 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12881 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12882 | } |
12883 | ||
12884 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12885 | ||
5c2b4418 HZ |
12886 | /* Dprintf breakpoint_ops methods. */ |
12887 | ||
12888 | static void | |
12889 | dprintf_re_set (struct breakpoint *b) | |
12890 | { | |
12891 | breakpoint_re_set_default (b); | |
12892 | ||
f00aae0f KS |
12893 | /* extra_string should never be non-NULL for dprintf. */ |
12894 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12895 | |
12896 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12897 | 2 - create a dprintf, which resolves fine. | |
12898 | 3 - disconnect from target 1 | |
12899 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12900 | ||
12901 | After steps #3/#4, you'll want the dprintf command list to | |
12902 | be updated, because target 1 and 2 may well return different | |
12903 | answers for target_can_run_breakpoint_commands(). | |
12904 | Given absence of finer grained resetting, we get to do | |
12905 | it all the time. */ | |
12906 | if (b->extra_string != NULL) | |
12907 | update_dprintf_command_list (b); | |
12908 | } | |
12909 | ||
2d9442cc HZ |
12910 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12911 | ||
12912 | static void | |
12913 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12914 | { | |
f00aae0f | 12915 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12916 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12917 | tp->extra_string); |
12918 | print_recreate_thread (tp, fp); | |
12919 | } | |
12920 | ||
9d6e6e84 HZ |
12921 | /* Implement the "after_condition_true" breakpoint_ops method for |
12922 | dprintf. | |
12923 | ||
12924 | dprintf's are implemented with regular commands in their command | |
12925 | list, but we run the commands here instead of before presenting the | |
12926 | stop to the user, as dprintf's don't actually cause a stop. This | |
12927 | also makes it so that the commands of multiple dprintfs at the same | |
12928 | address are all handled. */ | |
12929 | ||
12930 | static void | |
12931 | dprintf_after_condition_true (struct bpstats *bs) | |
12932 | { | |
04afa70c | 12933 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12934 | struct bpstats *tmp_bs_p = &tmp_bs; |
12935 | ||
12936 | /* dprintf's never cause a stop. This wasn't set in the | |
12937 | check_status hook instead because that would make the dprintf's | |
12938 | condition not be evaluated. */ | |
12939 | bs->stop = 0; | |
12940 | ||
12941 | /* Run the command list here. Take ownership of it instead of | |
12942 | copying. We never want these commands to run later in | |
12943 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12944 | be set at same address as this dprintf, or even if running the | |
12945 | commands here throws. */ | |
12946 | tmp_bs.commands = bs->commands; | |
12947 | bs->commands = NULL; | |
9d6e6e84 HZ |
12948 | |
12949 | bpstat_do_actions_1 (&tmp_bs_p); | |
12950 | ||
12951 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12952 | bpstat_do_actions_1 may return early without processing the whole | |
12953 | list. */ | |
9d6e6e84 HZ |
12954 | } |
12955 | ||
983af33b SDJ |
12956 | /* The breakpoint_ops structure to be used on static tracepoints with |
12957 | markers (`-m'). */ | |
12958 | ||
12959 | static void | |
f00aae0f | 12960 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12961 | struct linespec_result *canonical, |
f00aae0f | 12962 | enum bptype type_wanted) |
983af33b SDJ |
12963 | { |
12964 | struct linespec_sals lsal; | |
f00aae0f | 12965 | const char *arg_start, *arg; |
983af33b | 12966 | |
a20714ff | 12967 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12968 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12969 | |
f2fc3015 TT |
12970 | std::string str (arg_start, arg - arg_start); |
12971 | const char *ptr = str.c_str (); | |
a20714ff PA |
12972 | canonical->location |
12973 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12974 | |
8e9e35b1 TT |
12975 | lsal.canonical |
12976 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12977 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12978 | } |
12979 | ||
12980 | static void | |
12981 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12982 | struct linespec_result *canonical, | |
e1e01040 PA |
12983 | gdb::unique_xmalloc_ptr<char> cond_string, |
12984 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12985 | enum bptype type_wanted, |
12986 | enum bpdisp disposition, | |
12987 | int thread, | |
12988 | int task, int ignore_count, | |
12989 | const struct breakpoint_ops *ops, | |
12990 | int from_tty, int enabled, | |
44f238bb | 12991 | int internal, unsigned flags) |
983af33b | 12992 | { |
6c5b2ebe | 12993 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12994 | |
12995 | /* If the user is creating a static tracepoint by marker id | |
12996 | (strace -m MARKER_ID), then store the sals index, so that | |
12997 | breakpoint_re_set can try to match up which of the newly | |
12998 | found markers corresponds to this one, and, don't try to | |
12999 | expand multiple locations for each sal, given than SALS | |
13000 | already should contain all sals for MARKER_ID. */ | |
13001 | ||
6c5b2ebe | 13002 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13003 | { |
6c5b2ebe PA |
13004 | event_location_up location |
13005 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13006 | |
b270e6f9 | 13007 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13008 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13009 | std::move (location), NULL, |
e1e01040 PA |
13010 | std::move (cond_string), |
13011 | std::move (extra_string), | |
e7e0cddf | 13012 | type_wanted, disposition, |
983af33b | 13013 | thread, task, ignore_count, ops, |
44f238bb | 13014 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13015 | canonical->special_display); |
13016 | /* Given that its possible to have multiple markers with | |
13017 | the same string id, if the user is creating a static | |
13018 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13019 | store the sals index, so that breakpoint_re_set can | |
13020 | try to match up which of the newly found markers | |
13021 | corresponds to this one */ | |
13022 | tp->static_trace_marker_id_idx = i; | |
13023 | ||
b270e6f9 | 13024 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13025 | } |
13026 | } | |
13027 | ||
6c5b2ebe | 13028 | static std::vector<symtab_and_line> |
f00aae0f KS |
13029 | strace_marker_decode_location (struct breakpoint *b, |
13030 | const struct event_location *location, | |
6c5b2ebe | 13031 | struct program_space *search_pspace) |
983af33b SDJ |
13032 | { |
13033 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13034 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13035 | |
6c5b2ebe PA |
13036 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13037 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13038 | { |
6c5b2ebe PA |
13039 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13040 | sals.resize (1); | |
13041 | return sals; | |
983af33b SDJ |
13042 | } |
13043 | else | |
5d9310c4 | 13044 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13045 | } |
13046 | ||
13047 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13048 | ||
13049 | static int | |
13050 | strace_marker_p (struct breakpoint *b) | |
13051 | { | |
13052 | return b->ops == &strace_marker_breakpoint_ops; | |
13053 | } | |
13054 | ||
53a5351d | 13055 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13056 | structures. */ |
c906108c SS |
13057 | |
13058 | void | |
fba45db2 | 13059 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13060 | { |
52f0bd74 | 13061 | struct breakpoint *b; |
c906108c | 13062 | |
8a3fe4f8 | 13063 | gdb_assert (bpt != NULL); |
c906108c | 13064 | |
4a64f543 MS |
13065 | /* Has this bp already been deleted? This can happen because |
13066 | multiple lists can hold pointers to bp's. bpstat lists are | |
13067 | especial culprits. | |
13068 | ||
13069 | One example of this happening is a watchpoint's scope bp. When | |
13070 | the scope bp triggers, we notice that the watchpoint is out of | |
13071 | scope, and delete it. We also delete its scope bp. But the | |
13072 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13073 | That bpstat is then checked for auto-deleting bp's, which are | |
13074 | deleted. | |
13075 | ||
13076 | A real solution to this problem might involve reference counts in | |
13077 | bp's, and/or giving them pointers back to their referencing | |
13078 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13079 | storage when no more references were extent. A cheaper bandaid | |
13080 | was chosen. */ | |
c906108c SS |
13081 | if (bpt->type == bp_none) |
13082 | return; | |
13083 | ||
4a64f543 MS |
13084 | /* At least avoid this stale reference until the reference counting |
13085 | of breakpoints gets resolved. */ | |
d0fb5eae | 13086 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13087 | { |
d0fb5eae | 13088 | struct breakpoint *related; |
3a5c3e22 | 13089 | struct watchpoint *w; |
d0fb5eae JK |
13090 | |
13091 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13092 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13093 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13094 | w = (struct watchpoint *) bpt; |
13095 | else | |
13096 | w = NULL; | |
13097 | if (w != NULL) | |
13098 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13099 | |
13100 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13101 | for (related = bpt; related->related_breakpoint != bpt; | |
13102 | related = related->related_breakpoint); | |
13103 | related->related_breakpoint = bpt->related_breakpoint; | |
13104 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13105 | } |
13106 | ||
a9634178 TJB |
13107 | /* watch_command_1 creates a watchpoint but only sets its number if |
13108 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13109 | a problem in that process, we'll be asked to delete the half-created | |
13110 | watchpoint. In that case, don't announce the deletion. */ | |
13111 | if (bpt->number) | |
76727919 | 13112 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13113 | |
c906108c SS |
13114 | if (breakpoint_chain == bpt) |
13115 | breakpoint_chain = bpt->next; | |
13116 | ||
c906108c SS |
13117 | ALL_BREAKPOINTS (b) |
13118 | if (b->next == bpt) | |
c5aa993b JM |
13119 | { |
13120 | b->next = bpt->next; | |
13121 | break; | |
13122 | } | |
c906108c | 13123 | |
f431efe5 PA |
13124 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13125 | been freed. */ | |
13126 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13127 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13128 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13129 | commands are associated with the bpstat; if we remove it here, | |
13130 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13131 | event-top.c won't do anything, and temporary breakpoints with | |
13132 | commands won't work. */ | |
13133 | ||
13134 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13135 | ||
4a64f543 MS |
13136 | /* Now that breakpoint is removed from breakpoint list, update the |
13137 | global location list. This will remove locations that used to | |
13138 | belong to this breakpoint. Do this before freeing the breakpoint | |
13139 | itself, since remove_breakpoint looks at location's owner. It | |
13140 | might be better design to have location completely | |
13141 | self-contained, but it's not the case now. */ | |
44702360 | 13142 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13143 | |
4a64f543 MS |
13144 | /* On the chance that someone will soon try again to delete this |
13145 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13146 | bpt->type = bp_none; |
4d01a485 | 13147 | delete bpt; |
c906108c SS |
13148 | } |
13149 | ||
51be5b68 PA |
13150 | /* Iterator function to call a user-provided callback function once |
13151 | for each of B and its related breakpoints. */ | |
13152 | ||
13153 | static void | |
13154 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13155 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13156 | { |
13157 | struct breakpoint *related; | |
13158 | ||
13159 | related = b; | |
13160 | do | |
13161 | { | |
13162 | struct breakpoint *next; | |
13163 | ||
13164 | /* FUNCTION may delete RELATED. */ | |
13165 | next = related->related_breakpoint; | |
13166 | ||
13167 | if (next == related) | |
13168 | { | |
13169 | /* RELATED is the last ring entry. */ | |
48649e1b | 13170 | function (related); |
51be5b68 PA |
13171 | |
13172 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13173 | B. There's nothing left to do anyway, so just break | |
13174 | out. */ | |
13175 | break; | |
13176 | } | |
13177 | else | |
48649e1b | 13178 | function (related); |
51be5b68 PA |
13179 | |
13180 | related = next; | |
13181 | } | |
13182 | while (related != b); | |
13183 | } | |
95a42b64 | 13184 | |
4495129a | 13185 | static void |
981a3fb3 | 13186 | delete_command (const char *arg, int from_tty) |
c906108c | 13187 | { |
35df4500 | 13188 | struct breakpoint *b, *b_tmp; |
c906108c | 13189 | |
ea9365bb TT |
13190 | dont_repeat (); |
13191 | ||
c906108c SS |
13192 | if (arg == 0) |
13193 | { | |
13194 | int breaks_to_delete = 0; | |
13195 | ||
46c6471b PA |
13196 | /* Delete all breakpoints if no argument. Do not delete |
13197 | internal breakpoints, these have to be deleted with an | |
13198 | explicit breakpoint number argument. */ | |
c5aa993b | 13199 | ALL_BREAKPOINTS (b) |
46c6471b | 13200 | if (user_breakpoint_p (b)) |
973d738b DJ |
13201 | { |
13202 | breaks_to_delete = 1; | |
13203 | break; | |
13204 | } | |
c906108c SS |
13205 | |
13206 | /* Ask user only if there are some breakpoints to delete. */ | |
13207 | if (!from_tty | |
e2e0b3e5 | 13208 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13209 | { |
35df4500 | 13210 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13211 | if (user_breakpoint_p (b)) |
c5aa993b | 13212 | delete_breakpoint (b); |
c906108c SS |
13213 | } |
13214 | } | |
13215 | else | |
48649e1b | 13216 | map_breakpoint_numbers |
b926417a | 13217 | (arg, [&] (breakpoint *br) |
48649e1b | 13218 | { |
b926417a | 13219 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13220 | }); |
c906108c SS |
13221 | } |
13222 | ||
c2f4122d PA |
13223 | /* Return true if all locations of B bound to PSPACE are pending. If |
13224 | PSPACE is NULL, all locations of all program spaces are | |
13225 | considered. */ | |
13226 | ||
0d381245 | 13227 | static int |
c2f4122d | 13228 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13229 | { |
c2f4122d PA |
13230 | struct bp_location *loc; |
13231 | ||
13232 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13233 | if ((pspace == NULL | |
13234 | || loc->pspace == pspace) | |
13235 | && !loc->shlib_disabled | |
8645ff69 | 13236 | && !loc->pspace->executing_startup) |
0d381245 VP |
13237 | return 0; |
13238 | return 1; | |
fe3f5fa8 VP |
13239 | } |
13240 | ||
776592bf DE |
13241 | /* Subroutine of update_breakpoint_locations to simplify it. |
13242 | Return non-zero if multiple fns in list LOC have the same name. | |
13243 | Null names are ignored. */ | |
13244 | ||
13245 | static int | |
13246 | ambiguous_names_p (struct bp_location *loc) | |
13247 | { | |
13248 | struct bp_location *l; | |
459a2e4c TT |
13249 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13250 | xcalloc, xfree); | |
776592bf DE |
13251 | |
13252 | for (l = loc; l != NULL; l = l->next) | |
13253 | { | |
13254 | const char **slot; | |
13255 | const char *name = l->function_name; | |
13256 | ||
13257 | /* Allow for some names to be NULL, ignore them. */ | |
13258 | if (name == NULL) | |
13259 | continue; | |
13260 | ||
13261 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13262 | INSERT); | |
4a64f543 MS |
13263 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13264 | returns NULL. */ | |
776592bf DE |
13265 | if (*slot != NULL) |
13266 | { | |
13267 | htab_delete (htab); | |
13268 | return 1; | |
13269 | } | |
13270 | *slot = name; | |
13271 | } | |
13272 | ||
13273 | htab_delete (htab); | |
13274 | return 0; | |
13275 | } | |
13276 | ||
0fb4aa4b PA |
13277 | /* When symbols change, it probably means the sources changed as well, |
13278 | and it might mean the static tracepoint markers are no longer at | |
13279 | the same address or line numbers they used to be at last we | |
13280 | checked. Losing your static tracepoints whenever you rebuild is | |
13281 | undesirable. This function tries to resync/rematch gdb static | |
13282 | tracepoints with the markers on the target, for static tracepoints | |
13283 | that have not been set by marker id. Static tracepoint that have | |
13284 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13285 | The heuristic is: | |
13286 | ||
13287 | 1) For a tracepoint set at a specific address, look for a marker at | |
13288 | the old PC. If one is found there, assume to be the same marker. | |
13289 | If the name / string id of the marker found is different from the | |
13290 | previous known name, assume that means the user renamed the marker | |
13291 | in the sources, and output a warning. | |
13292 | ||
13293 | 2) For a tracepoint set at a given line number, look for a marker | |
13294 | at the new address of the old line number. If one is found there, | |
13295 | assume to be the same marker. If the name / string id of the | |
13296 | marker found is different from the previous known name, assume that | |
13297 | means the user renamed the marker in the sources, and output a | |
13298 | warning. | |
13299 | ||
13300 | 3) If a marker is no longer found at the same address or line, it | |
13301 | may mean the marker no longer exists. But it may also just mean | |
13302 | the code changed a bit. Maybe the user added a few lines of code | |
13303 | that made the marker move up or down (in line number terms). Ask | |
13304 | the target for info about the marker with the string id as we knew | |
13305 | it. If found, update line number and address in the matching | |
13306 | static tracepoint. This will get confused if there's more than one | |
13307 | marker with the same ID (possible in UST, although unadvised | |
13308 | precisely because it confuses tools). */ | |
13309 | ||
13310 | static struct symtab_and_line | |
13311 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13312 | { | |
d9b3f62e | 13313 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13314 | struct static_tracepoint_marker marker; |
13315 | CORE_ADDR pc; | |
0fb4aa4b PA |
13316 | |
13317 | pc = sal.pc; | |
13318 | if (sal.line) | |
13319 | find_line_pc (sal.symtab, sal.line, &pc); | |
13320 | ||
13321 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13322 | { | |
5d9310c4 | 13323 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13324 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13325 | b->number, tp->static_trace_marker_id.c_str (), |
13326 | marker.str_id.c_str ()); | |
0fb4aa4b | 13327 | |
5d9310c4 | 13328 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13329 | |
13330 | return sal; | |
13331 | } | |
13332 | ||
13333 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13334 | by string ID. */ | |
13335 | if (!sal.explicit_pc | |
13336 | && sal.line != 0 | |
13337 | && sal.symtab != NULL | |
5d9310c4 | 13338 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13339 | { |
5d9310c4 SM |
13340 | std::vector<static_tracepoint_marker> markers |
13341 | = target_static_tracepoint_markers_by_strid | |
13342 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13343 | |
5d9310c4 | 13344 | if (!markers.empty ()) |
0fb4aa4b | 13345 | { |
0fb4aa4b | 13346 | struct symbol *sym; |
80e1d417 | 13347 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13348 | struct ui_out *uiout = current_uiout; |
67994074 | 13349 | struct explicit_location explicit_loc; |
0fb4aa4b | 13350 | |
5d9310c4 | 13351 | tpmarker = &markers[0]; |
0fb4aa4b | 13352 | |
5d9310c4 | 13353 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13354 | |
13355 | warning (_("marker for static tracepoint %d (%s) not " | |
13356 | "found at previous line number"), | |
5d9310c4 | 13357 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13358 | |
51abb421 | 13359 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13360 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13361 | uiout->text ("Now in "); |
0fb4aa4b PA |
13362 | if (sym) |
13363 | { | |
cbe56571 TT |
13364 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
13365 | ui_out_style_kind::FUNCTION); | |
112e8700 | 13366 | uiout->text (" at "); |
0fb4aa4b | 13367 | } |
112e8700 | 13368 | uiout->field_string ("file", |
cbe56571 TT |
13369 | symtab_to_filename_for_display (sal2.symtab), |
13370 | ui_out_style_kind::FILE); | |
112e8700 | 13371 | uiout->text (":"); |
0fb4aa4b | 13372 | |
112e8700 | 13373 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13374 | { |
0b0865da | 13375 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13376 | |
112e8700 | 13377 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13378 | } |
13379 | ||
112e8700 SM |
13380 | uiout->field_int ("line", sal2.line); |
13381 | uiout->text ("\n"); | |
0fb4aa4b | 13382 | |
80e1d417 | 13383 | b->loc->line_number = sal2.line; |
2f202fde | 13384 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13385 | |
d28cd78a | 13386 | b->location.reset (NULL); |
67994074 KS |
13387 | initialize_explicit_location (&explicit_loc); |
13388 | explicit_loc.source_filename | |
00e52e53 | 13389 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13390 | explicit_loc.line_offset.offset = b->loc->line_number; |
13391 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13392 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13393 | |
13394 | /* Might be nice to check if function changed, and warn if | |
13395 | so. */ | |
0fb4aa4b PA |
13396 | } |
13397 | } | |
13398 | return sal; | |
13399 | } | |
13400 | ||
8d3788bd VP |
13401 | /* Returns 1 iff locations A and B are sufficiently same that |
13402 | we don't need to report breakpoint as changed. */ | |
13403 | ||
13404 | static int | |
13405 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13406 | { | |
13407 | while (a && b) | |
13408 | { | |
13409 | if (a->address != b->address) | |
13410 | return 0; | |
13411 | ||
13412 | if (a->shlib_disabled != b->shlib_disabled) | |
13413 | return 0; | |
13414 | ||
13415 | if (a->enabled != b->enabled) | |
13416 | return 0; | |
13417 | ||
13418 | a = a->next; | |
13419 | b = b->next; | |
13420 | } | |
13421 | ||
13422 | if ((a == NULL) != (b == NULL)) | |
13423 | return 0; | |
13424 | ||
13425 | return 1; | |
13426 | } | |
13427 | ||
c2f4122d PA |
13428 | /* Split all locations of B that are bound to PSPACE out of B's |
13429 | location list to a separate list and return that list's head. If | |
13430 | PSPACE is NULL, hoist out all locations of B. */ | |
13431 | ||
13432 | static struct bp_location * | |
13433 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13434 | { | |
13435 | struct bp_location head; | |
13436 | struct bp_location *i = b->loc; | |
13437 | struct bp_location **i_link = &b->loc; | |
13438 | struct bp_location *hoisted = &head; | |
13439 | ||
13440 | if (pspace == NULL) | |
13441 | { | |
13442 | i = b->loc; | |
13443 | b->loc = NULL; | |
13444 | return i; | |
13445 | } | |
13446 | ||
13447 | head.next = NULL; | |
13448 | ||
13449 | while (i != NULL) | |
13450 | { | |
13451 | if (i->pspace == pspace) | |
13452 | { | |
13453 | *i_link = i->next; | |
13454 | i->next = NULL; | |
13455 | hoisted->next = i; | |
13456 | hoisted = i; | |
13457 | } | |
13458 | else | |
13459 | i_link = &i->next; | |
13460 | i = *i_link; | |
13461 | } | |
13462 | ||
13463 | return head.next; | |
13464 | } | |
13465 | ||
13466 | /* Create new breakpoint locations for B (a hardware or software | |
13467 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13468 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13469 | FILTER_PSPACE. Locations of other program spaces are left | |
13470 | untouched. */ | |
f1310107 | 13471 | |
0e30163f | 13472 | void |
0d381245 | 13473 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13474 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13475 | gdb::array_view<const symtab_and_line> sals, |
13476 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13477 | { |
c2f4122d | 13478 | struct bp_location *existing_locations; |
0d381245 | 13479 | |
6c5b2ebe | 13480 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13481 | { |
13482 | /* Ranged breakpoints have only one start location and one end | |
13483 | location. */ | |
13484 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13485 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13486 | "multiple locations found\n"), | |
13487 | b->number); | |
13488 | return; | |
13489 | } | |
f1310107 | 13490 | |
4a64f543 MS |
13491 | /* If there's no new locations, and all existing locations are |
13492 | pending, don't do anything. This optimizes the common case where | |
13493 | all locations are in the same shared library, that was unloaded. | |
13494 | We'd like to retain the location, so that when the library is | |
13495 | loaded again, we don't loose the enabled/disabled status of the | |
13496 | individual locations. */ | |
6c5b2ebe | 13497 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13498 | return; |
13499 | ||
c2f4122d | 13500 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13501 | |
6c5b2ebe | 13502 | for (const auto &sal : sals) |
fe3f5fa8 | 13503 | { |
f8eba3c6 TT |
13504 | struct bp_location *new_loc; |
13505 | ||
6c5b2ebe | 13506 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13507 | |
6c5b2ebe | 13508 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13509 | |
0d381245 VP |
13510 | /* Reparse conditions, they might contain references to the |
13511 | old symtab. */ | |
13512 | if (b->cond_string != NULL) | |
13513 | { | |
bbc13ae3 | 13514 | const char *s; |
fe3f5fa8 | 13515 | |
0d381245 | 13516 | s = b->cond_string; |
a70b8144 | 13517 | try |
0d381245 | 13518 | { |
6c5b2ebe PA |
13519 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13520 | block_for_pc (sal.pc), | |
0d381245 VP |
13521 | 0); |
13522 | } | |
230d2906 | 13523 | catch (const gdb_exception_error &e) |
0d381245 | 13524 | { |
3e43a32a MS |
13525 | warning (_("failed to reevaluate condition " |
13526 | "for breakpoint %d: %s"), | |
3d6e9d23 | 13527 | b->number, e.what ()); |
0d381245 VP |
13528 | new_loc->enabled = 0; |
13529 | } | |
13530 | } | |
fe3f5fa8 | 13531 | |
6c5b2ebe | 13532 | if (!sals_end.empty ()) |
f1310107 | 13533 | { |
6c5b2ebe | 13534 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13535 | |
6c5b2ebe | 13536 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13537 | } |
0d381245 | 13538 | } |
fe3f5fa8 | 13539 | |
4a64f543 MS |
13540 | /* If possible, carry over 'disable' status from existing |
13541 | breakpoints. */ | |
0d381245 VP |
13542 | { |
13543 | struct bp_location *e = existing_locations; | |
776592bf DE |
13544 | /* If there are multiple breakpoints with the same function name, |
13545 | e.g. for inline functions, comparing function names won't work. | |
13546 | Instead compare pc addresses; this is just a heuristic as things | |
13547 | may have moved, but in practice it gives the correct answer | |
13548 | often enough until a better solution is found. */ | |
13549 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13550 | ||
0d381245 VP |
13551 | for (; e; e = e->next) |
13552 | { | |
13553 | if (!e->enabled && e->function_name) | |
13554 | { | |
13555 | struct bp_location *l = b->loc; | |
776592bf DE |
13556 | if (have_ambiguous_names) |
13557 | { | |
13558 | for (; l; l = l->next) | |
f1310107 | 13559 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13560 | { |
13561 | l->enabled = 0; | |
13562 | break; | |
13563 | } | |
13564 | } | |
13565 | else | |
13566 | { | |
13567 | for (; l; l = l->next) | |
13568 | if (l->function_name | |
13569 | && strcmp (e->function_name, l->function_name) == 0) | |
13570 | { | |
13571 | l->enabled = 0; | |
13572 | break; | |
13573 | } | |
13574 | } | |
0d381245 VP |
13575 | } |
13576 | } | |
13577 | } | |
fe3f5fa8 | 13578 | |
8d3788bd | 13579 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13580 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13581 | } |
13582 | ||
f00aae0f | 13583 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13584 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13585 | ||
6c5b2ebe | 13586 | static std::vector<symtab_and_line> |
f00aae0f | 13587 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13588 | struct program_space *search_pspace, int *found) |
ef23e705 | 13589 | { |
cc06b668 | 13590 | struct gdb_exception exception; |
ef23e705 | 13591 | |
983af33b | 13592 | gdb_assert (b->ops != NULL); |
ef23e705 | 13593 | |
6c5b2ebe PA |
13594 | std::vector<symtab_and_line> sals; |
13595 | ||
a70b8144 | 13596 | try |
ef23e705 | 13597 | { |
6c5b2ebe | 13598 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13599 | } |
94aeb44b | 13600 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13601 | { |
13602 | int not_found_and_ok = 0; | |
492d29ea | 13603 | |
ef23e705 TJB |
13604 | /* For pending breakpoints, it's expected that parsing will |
13605 | fail until the right shared library is loaded. User has | |
13606 | already told to create pending breakpoints and don't need | |
13607 | extra messages. If breakpoint is in bp_shlib_disabled | |
13608 | state, then user already saw the message about that | |
13609 | breakpoint being disabled, and don't want to see more | |
13610 | errors. */ | |
58438ac1 | 13611 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13612 | && (b->condition_not_parsed |
13613 | || (b->loc != NULL | |
13614 | && search_pspace != NULL | |
13615 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13616 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13617 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13618 | || b->enable_state == bp_disabled)) |
13619 | not_found_and_ok = 1; | |
13620 | ||
13621 | if (!not_found_and_ok) | |
13622 | { | |
13623 | /* We surely don't want to warn about the same breakpoint | |
13624 | 10 times. One solution, implemented here, is disable | |
13625 | the breakpoint on error. Another solution would be to | |
13626 | have separate 'warning emitted' flag. Since this | |
13627 | happens only when a binary has changed, I don't know | |
13628 | which approach is better. */ | |
13629 | b->enable_state = bp_disabled; | |
eedc3f4f | 13630 | throw; |
ef23e705 | 13631 | } |
94aeb44b TT |
13632 | |
13633 | exception = std::move (e); | |
ef23e705 TJB |
13634 | } |
13635 | ||
492d29ea | 13636 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13637 | { |
6c5b2ebe PA |
13638 | for (auto &sal : sals) |
13639 | resolve_sal_pc (&sal); | |
f00aae0f | 13640 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13641 | { |
ed1d1739 KS |
13642 | char *cond_string, *extra_string; |
13643 | int thread, task; | |
ef23e705 | 13644 | |
6c5b2ebe | 13645 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13646 | &cond_string, &thread, &task, |
13647 | &extra_string); | |
f00aae0f | 13648 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13649 | if (cond_string) |
13650 | b->cond_string = cond_string; | |
13651 | b->thread = thread; | |
13652 | b->task = task; | |
e7e0cddf | 13653 | if (extra_string) |
f00aae0f KS |
13654 | { |
13655 | xfree (b->extra_string); | |
13656 | b->extra_string = extra_string; | |
13657 | } | |
ef23e705 TJB |
13658 | b->condition_not_parsed = 0; |
13659 | } | |
13660 | ||
983af33b | 13661 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13662 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13663 | |
58438ac1 TT |
13664 | *found = 1; |
13665 | } | |
13666 | else | |
13667 | *found = 0; | |
ef23e705 TJB |
13668 | |
13669 | return sals; | |
13670 | } | |
13671 | ||
348d480f PA |
13672 | /* The default re_set method, for typical hardware or software |
13673 | breakpoints. Reevaluate the breakpoint and recreate its | |
13674 | locations. */ | |
13675 | ||
13676 | static void | |
28010a5d | 13677 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13678 | { |
c2f4122d | 13679 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13680 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13681 | |
6c5b2ebe PA |
13682 | int found; |
13683 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13684 | filter_pspace, &found); | |
ef23e705 | 13685 | if (found) |
6c5b2ebe | 13686 | expanded = std::move (sals); |
ef23e705 | 13687 | |
f00aae0f | 13688 | if (b->location_range_end != NULL) |
f1310107 | 13689 | { |
6c5b2ebe PA |
13690 | std::vector<symtab_and_line> sals_end |
13691 | = location_to_sals (b, b->location_range_end.get (), | |
13692 | filter_pspace, &found); | |
f1310107 | 13693 | if (found) |
6c5b2ebe | 13694 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13695 | } |
13696 | ||
c2f4122d | 13697 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13698 | } |
13699 | ||
983af33b SDJ |
13700 | /* Default method for creating SALs from an address string. It basically |
13701 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13702 | ||
13703 | static void | |
f00aae0f KS |
13704 | create_sals_from_location_default (const struct event_location *location, |
13705 | struct linespec_result *canonical, | |
13706 | enum bptype type_wanted) | |
983af33b | 13707 | { |
f00aae0f | 13708 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13709 | } |
13710 | ||
13711 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13712 | function for the `create_breakpoints_sal' method of | |
13713 | breakpoint_ops. */ | |
13714 | ||
13715 | static void | |
13716 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13717 | struct linespec_result *canonical, | |
e1e01040 PA |
13718 | gdb::unique_xmalloc_ptr<char> cond_string, |
13719 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13720 | enum bptype type_wanted, |
13721 | enum bpdisp disposition, | |
13722 | int thread, | |
13723 | int task, int ignore_count, | |
13724 | const struct breakpoint_ops *ops, | |
13725 | int from_tty, int enabled, | |
44f238bb | 13726 | int internal, unsigned flags) |
983af33b | 13727 | { |
e1e01040 PA |
13728 | create_breakpoints_sal (gdbarch, canonical, |
13729 | std::move (cond_string), | |
13730 | std::move (extra_string), | |
983af33b SDJ |
13731 | type_wanted, disposition, |
13732 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13733 | enabled, internal, flags); |
983af33b SDJ |
13734 | } |
13735 | ||
13736 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13737 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13738 | |
6c5b2ebe | 13739 | static std::vector<symtab_and_line> |
f00aae0f KS |
13740 | decode_location_default (struct breakpoint *b, |
13741 | const struct event_location *location, | |
6c5b2ebe | 13742 | struct program_space *search_pspace) |
983af33b SDJ |
13743 | { |
13744 | struct linespec_result canonical; | |
13745 | ||
c2f4122d | 13746 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13747 | (struct symtab *) NULL, 0, |
13748 | &canonical, multiple_symbols_all, | |
13749 | b->filter); | |
13750 | ||
13751 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13752 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13753 | |
6c5b2ebe | 13754 | if (!canonical.lsals.empty ()) |
983af33b | 13755 | { |
6c5b2ebe PA |
13756 | const linespec_sals &lsal = canonical.lsals[0]; |
13757 | return std::move (lsal.sals); | |
983af33b | 13758 | } |
6c5b2ebe | 13759 | return {}; |
983af33b SDJ |
13760 | } |
13761 | ||
bf469271 | 13762 | /* Reset a breakpoint. */ |
c906108c | 13763 | |
bf469271 PA |
13764 | static void |
13765 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13766 | { |
fdf44873 TT |
13767 | input_radix = b->input_radix; |
13768 | set_language (b->language); | |
c906108c | 13769 | |
348d480f | 13770 | b->ops->re_set (b); |
c906108c SS |
13771 | } |
13772 | ||
c2f4122d PA |
13773 | /* Re-set breakpoint locations for the current program space. |
13774 | Locations bound to other program spaces are left untouched. */ | |
13775 | ||
c906108c | 13776 | void |
69de3c6a | 13777 | breakpoint_re_set (void) |
c906108c | 13778 | { |
35df4500 | 13779 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13780 | |
c5aa993b | 13781 | { |
fdf44873 TT |
13782 | scoped_restore_current_language save_language; |
13783 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13784 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13785 | |
8e817061 JB |
13786 | /* breakpoint_re_set_one sets the current_language to the language |
13787 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13788 | before re-evaluating the breakpoint's location. This change can | |
13789 | unfortunately get undone by accident if the language_mode is set | |
13790 | to auto, and we either switch frames, or more likely in this context, | |
13791 | we select the current frame. | |
13792 | ||
13793 | We prevent this by temporarily turning the language_mode to | |
13794 | language_mode_manual. We restore it once all breakpoints | |
13795 | have been reset. */ | |
13796 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13797 | language_mode = language_mode_manual; | |
13798 | ||
5ed8105e PA |
13799 | /* Note: we must not try to insert locations until after all |
13800 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13801 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13802 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13803 | |
5ed8105e PA |
13804 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13805 | { | |
a70b8144 | 13806 | try |
bf469271 PA |
13807 | { |
13808 | breakpoint_re_set_one (b); | |
13809 | } | |
230d2906 | 13810 | catch (const gdb_exception &ex) |
bf469271 PA |
13811 | { |
13812 | exception_fprintf (gdb_stderr, ex, | |
13813 | "Error in re-setting breakpoint %d: ", | |
13814 | b->number); | |
13815 | } | |
5ed8105e | 13816 | } |
5ed8105e PA |
13817 | |
13818 | jit_breakpoint_re_set (); | |
13819 | } | |
6c95b8df | 13820 | |
af02033e PP |
13821 | create_overlay_event_breakpoint (); |
13822 | create_longjmp_master_breakpoint (); | |
13823 | create_std_terminate_master_breakpoint (); | |
186c406b | 13824 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13825 | |
13826 | /* Now we can insert. */ | |
13827 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13828 | } |
13829 | \f | |
c906108c SS |
13830 | /* Reset the thread number of this breakpoint: |
13831 | ||
13832 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13833 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13834 | void |
fba45db2 | 13835 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13836 | { |
13837 | if (b->thread != -1) | |
13838 | { | |
00431a78 | 13839 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13840 | |
13841 | /* We're being called after following a fork. The new fork is | |
13842 | selected as current, and unless this was a vfork will have a | |
13843 | different program space from the original thread. Reset that | |
13844 | as well. */ | |
13845 | b->loc->pspace = current_program_space; | |
c906108c SS |
13846 | } |
13847 | } | |
13848 | ||
03ac34d5 MS |
13849 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13850 | If from_tty is nonzero, it prints a message to that effect, | |
13851 | which ends with a period (no newline). */ | |
13852 | ||
c906108c | 13853 | void |
fba45db2 | 13854 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13855 | { |
52f0bd74 | 13856 | struct breakpoint *b; |
c906108c SS |
13857 | |
13858 | if (count < 0) | |
13859 | count = 0; | |
13860 | ||
13861 | ALL_BREAKPOINTS (b) | |
13862 | if (b->number == bptnum) | |
c5aa993b | 13863 | { |
d77f58be SS |
13864 | if (is_tracepoint (b)) |
13865 | { | |
13866 | if (from_tty && count != 0) | |
13867 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13868 | bptnum); | |
13869 | return; | |
13870 | } | |
13871 | ||
c5aa993b | 13872 | b->ignore_count = count; |
221ea385 KS |
13873 | if (from_tty) |
13874 | { | |
13875 | if (count == 0) | |
3e43a32a MS |
13876 | printf_filtered (_("Will stop next time " |
13877 | "breakpoint %d is reached."), | |
221ea385 KS |
13878 | bptnum); |
13879 | else if (count == 1) | |
a3f17187 | 13880 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13881 | bptnum); |
13882 | else | |
3e43a32a MS |
13883 | printf_filtered (_("Will ignore next %d " |
13884 | "crossings of breakpoint %d."), | |
221ea385 KS |
13885 | count, bptnum); |
13886 | } | |
76727919 | 13887 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13888 | return; |
13889 | } | |
c906108c | 13890 | |
8a3fe4f8 | 13891 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13892 | } |
13893 | ||
c906108c SS |
13894 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13895 | ||
13896 | static void | |
0b39b52e | 13897 | ignore_command (const char *args, int from_tty) |
c906108c | 13898 | { |
0b39b52e | 13899 | const char *p = args; |
52f0bd74 | 13900 | int num; |
c906108c SS |
13901 | |
13902 | if (p == 0) | |
e2e0b3e5 | 13903 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13904 | |
c906108c | 13905 | num = get_number (&p); |
5c44784c | 13906 | if (num == 0) |
8a3fe4f8 | 13907 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13908 | if (*p == 0) |
8a3fe4f8 | 13909 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13910 | |
13911 | set_ignore_count (num, | |
13912 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13913 | from_tty); | |
221ea385 KS |
13914 | if (from_tty) |
13915 | printf_filtered ("\n"); | |
c906108c SS |
13916 | } |
13917 | \f | |
d0fe4701 XR |
13918 | |
13919 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13920 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13921 | |
13922 | static void | |
d0fe4701 XR |
13923 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13924 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13925 | { |
d0fe4701 XR |
13926 | if (bp_num_range.first == 0) |
13927 | { | |
13928 | warning (_("bad breakpoint number at or near '%d'"), | |
13929 | bp_num_range.first); | |
13930 | } | |
13931 | else | |
c906108c | 13932 | { |
d0fe4701 | 13933 | struct breakpoint *b, *tmp; |
197f0a60 | 13934 | |
d0fe4701 | 13935 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13936 | { |
d0fe4701 XR |
13937 | bool match = false; |
13938 | ||
5c44784c | 13939 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13940 | if (b->number == i) |
5c44784c | 13941 | { |
bfd28288 | 13942 | match = true; |
48649e1b | 13943 | function (b); |
11cf8741 | 13944 | break; |
5c44784c | 13945 | } |
bfd28288 | 13946 | if (!match) |
d0fe4701 | 13947 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13948 | } |
c906108c SS |
13949 | } |
13950 | } | |
13951 | ||
d0fe4701 XR |
13952 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13953 | ARGS. */ | |
13954 | ||
13955 | static void | |
13956 | map_breakpoint_numbers (const char *args, | |
13957 | gdb::function_view<void (breakpoint *)> function) | |
13958 | { | |
13959 | if (args == NULL || *args == '\0') | |
13960 | error_no_arg (_("one or more breakpoint numbers")); | |
13961 | ||
13962 | number_or_range_parser parser (args); | |
13963 | ||
13964 | while (!parser.finished ()) | |
13965 | { | |
13966 | int num = parser.get_number (); | |
13967 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13968 | } | |
13969 | } | |
13970 | ||
13971 | /* Return the breakpoint location structure corresponding to the | |
13972 | BP_NUM and LOC_NUM values. */ | |
13973 | ||
0d381245 | 13974 | static struct bp_location * |
d0fe4701 | 13975 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13976 | { |
0d381245 | 13977 | struct breakpoint *b; |
0d381245 VP |
13978 | |
13979 | ALL_BREAKPOINTS (b) | |
13980 | if (b->number == bp_num) | |
13981 | { | |
13982 | break; | |
13983 | } | |
13984 | ||
13985 | if (!b || b->number != bp_num) | |
d0fe4701 | 13986 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13987 | |
0d381245 | 13988 | if (loc_num == 0) |
d0fe4701 | 13989 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13990 | |
d0fe4701 XR |
13991 | int n = 0; |
13992 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
13993 | if (++n == loc_num) | |
13994 | return loc; | |
13995 | ||
13996 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13997 | } |
13998 | ||
95e95a6d PA |
13999 | /* Modes of operation for extract_bp_num. */ |
14000 | enum class extract_bp_kind | |
14001 | { | |
14002 | /* Extracting a breakpoint number. */ | |
14003 | bp, | |
14004 | ||
14005 | /* Extracting a location number. */ | |
14006 | loc, | |
14007 | }; | |
14008 | ||
14009 | /* Extract a breakpoint or location number (as determined by KIND) | |
14010 | from the string starting at START. TRAILER is a character which | |
14011 | can be found after the number. If you don't want a trailer, use | |
14012 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14013 | string. This always returns a positive integer. */ | |
14014 | ||
14015 | static int | |
14016 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14017 | int trailer, const char **end_out = NULL) | |
14018 | { | |
14019 | const char *end = start; | |
14020 | int num = get_number_trailer (&end, trailer); | |
14021 | if (num < 0) | |
14022 | error (kind == extract_bp_kind::bp | |
14023 | ? _("Negative breakpoint number '%.*s'") | |
14024 | : _("Negative breakpoint location number '%.*s'"), | |
14025 | int (end - start), start); | |
14026 | if (num == 0) | |
14027 | error (kind == extract_bp_kind::bp | |
14028 | ? _("Bad breakpoint number '%.*s'") | |
14029 | : _("Bad breakpoint location number '%.*s'"), | |
14030 | int (end - start), start); | |
14031 | ||
14032 | if (end_out != NULL) | |
14033 | *end_out = end; | |
14034 | return num; | |
14035 | } | |
14036 | ||
14037 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14038 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14039 | representing the (inclusive) range. The returned pair's elements | |
14040 | are always positive integers. */ | |
14041 | ||
14042 | static std::pair<int, int> | |
14043 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14044 | const std::string &arg, | |
14045 | std::string::size_type arg_offset) | |
14046 | { | |
14047 | std::pair<int, int> range; | |
14048 | const char *bp_loc = &arg[arg_offset]; | |
14049 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14050 | if (dash != std::string::npos) | |
14051 | { | |
14052 | /* bp_loc is a range (x-z). */ | |
14053 | if (arg.length () == dash + 1) | |
14054 | error (kind == extract_bp_kind::bp | |
14055 | ? _("Bad breakpoint number at or near: '%s'") | |
14056 | : _("Bad breakpoint location number at or near: '%s'"), | |
14057 | bp_loc); | |
14058 | ||
14059 | const char *end; | |
14060 | const char *start_first = bp_loc; | |
14061 | const char *start_second = &arg[dash + 1]; | |
14062 | range.first = extract_bp_num (kind, start_first, '-'); | |
14063 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14064 | ||
14065 | if (range.first > range.second) | |
14066 | error (kind == extract_bp_kind::bp | |
14067 | ? _("Inverted breakpoint range at '%.*s'") | |
14068 | : _("Inverted breakpoint location range at '%.*s'"), | |
14069 | int (end - start_first), start_first); | |
14070 | } | |
14071 | else | |
14072 | { | |
14073 | /* bp_loc is a single value. */ | |
14074 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14075 | range.second = range.first; | |
14076 | } | |
14077 | return range; | |
14078 | } | |
14079 | ||
d0fe4701 XR |
14080 | /* Extract the breakpoint/location range specified by ARG. Returns |
14081 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14082 | BP_LOC_RANGE. | |
14083 | ||
14084 | ARG may be in any of the following forms: | |
14085 | ||
14086 | x where 'x' is a breakpoint number. | |
14087 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14088 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14089 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14090 | location number range. | |
14091 | */ | |
14092 | ||
cc638e86 | 14093 | static void |
d0fe4701 XR |
14094 | extract_bp_number_and_location (const std::string &arg, |
14095 | std::pair<int, int> &bp_num_range, | |
14096 | std::pair<int, int> &bp_loc_range) | |
14097 | { | |
14098 | std::string::size_type dot = arg.find ('.'); | |
14099 | ||
14100 | if (dot != std::string::npos) | |
14101 | { | |
14102 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14103 | ||
14104 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14105 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14106 | |
95e95a6d PA |
14107 | bp_num_range.first |
14108 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14109 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14110 | |
95e95a6d PA |
14111 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14112 | arg, dot + 1); | |
d0fe4701 XR |
14113 | } |
14114 | else | |
14115 | { | |
14116 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14117 | |
95e95a6d | 14118 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14119 | bp_loc_range.first = 0; |
14120 | bp_loc_range.second = 0; | |
14121 | } | |
d0fe4701 XR |
14122 | } |
14123 | ||
14124 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14125 | specifies whether to enable or disable. */ | |
14126 | ||
14127 | static void | |
14128 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14129 | { | |
14130 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14131 | if (loc != NULL) | |
14132 | { | |
14133 | if (loc->enabled != enable) | |
14134 | { | |
14135 | loc->enabled = enable; | |
14136 | mark_breakpoint_location_modified (loc); | |
14137 | } | |
14138 | if (target_supports_enable_disable_tracepoint () | |
14139 | && current_trace_status ()->running && loc->owner | |
14140 | && is_tracepoint (loc->owner)) | |
14141 | target_disable_tracepoint (loc); | |
14142 | } | |
14143 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14144 | |
14145 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14146 | } |
14147 | ||
14148 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14149 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14150 | (inclusive) range of location numbers of that breakpoint to | |
14151 | enable/disable. ENABLE specifies whether to enable or disable the | |
14152 | location. */ | |
14153 | ||
14154 | static void | |
14155 | enable_disable_breakpoint_location_range (int bp_num, | |
14156 | std::pair<int, int> &bp_loc_range, | |
14157 | bool enable) | |
14158 | { | |
14159 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14160 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14161 | } | |
0d381245 | 14162 | |
1900040c MS |
14163 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14164 | If from_tty is nonzero, it prints a message to that effect, | |
14165 | which ends with a period (no newline). */ | |
14166 | ||
c906108c | 14167 | void |
fba45db2 | 14168 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14169 | { |
14170 | /* Never disable a watchpoint scope breakpoint; we want to | |
14171 | hit them when we leave scope so we can delete both the | |
14172 | watchpoint and its scope breakpoint at that time. */ | |
14173 | if (bpt->type == bp_watchpoint_scope) | |
14174 | return; | |
14175 | ||
b5de0fa7 | 14176 | bpt->enable_state = bp_disabled; |
c906108c | 14177 | |
b775012e LM |
14178 | /* Mark breakpoint locations modified. */ |
14179 | mark_breakpoint_modified (bpt); | |
14180 | ||
d248b706 KY |
14181 | if (target_supports_enable_disable_tracepoint () |
14182 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14183 | { | |
14184 | struct bp_location *location; | |
14185 | ||
14186 | for (location = bpt->loc; location; location = location->next) | |
14187 | target_disable_tracepoint (location); | |
14188 | } | |
14189 | ||
44702360 | 14190 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14191 | |
76727919 | 14192 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14193 | } |
14194 | ||
d0fe4701 XR |
14195 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14196 | specified in ARGS. ARGS may be in any of the formats handled by | |
14197 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14198 | or disable the breakpoints/locations. */ | |
14199 | ||
c906108c | 14200 | static void |
d0fe4701 | 14201 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14202 | { |
c906108c | 14203 | if (args == 0) |
46c6471b PA |
14204 | { |
14205 | struct breakpoint *bpt; | |
14206 | ||
14207 | ALL_BREAKPOINTS (bpt) | |
14208 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14209 | { |
14210 | if (enable) | |
14211 | enable_breakpoint (bpt); | |
14212 | else | |
14213 | disable_breakpoint (bpt); | |
14214 | } | |
46c6471b | 14215 | } |
9eaabc75 | 14216 | else |
0d381245 | 14217 | { |
cb791d59 | 14218 | std::string num = extract_arg (&args); |
9eaabc75 | 14219 | |
cb791d59 | 14220 | while (!num.empty ()) |
d248b706 | 14221 | { |
d0fe4701 | 14222 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14223 | |
cc638e86 PA |
14224 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14225 | ||
14226 | if (bp_loc_range.first == bp_loc_range.second | |
14227 | && bp_loc_range.first == 0) | |
d0fe4701 | 14228 | { |
cc638e86 PA |
14229 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14230 | map_breakpoint_number_range (bp_num_range, | |
14231 | enable | |
14232 | ? enable_breakpoint | |
14233 | : disable_breakpoint); | |
14234 | } | |
14235 | else | |
14236 | { | |
14237 | /* Handle breakpoint ids with formats 'x.y' or | |
14238 | 'x.y-z'. */ | |
14239 | enable_disable_breakpoint_location_range | |
14240 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14241 | } |
9eaabc75 | 14242 | num = extract_arg (&args); |
d248b706 | 14243 | } |
0d381245 | 14244 | } |
c906108c SS |
14245 | } |
14246 | ||
d0fe4701 XR |
14247 | /* The disable command disables the specified breakpoints/locations |
14248 | (or all defined breakpoints) so they're no longer effective in | |
14249 | stopping the inferior. ARGS may be in any of the forms defined in | |
14250 | extract_bp_number_and_location. */ | |
14251 | ||
14252 | static void | |
14253 | disable_command (const char *args, int from_tty) | |
14254 | { | |
14255 | enable_disable_command (args, from_tty, false); | |
14256 | } | |
14257 | ||
c906108c | 14258 | static void |
816338b5 SS |
14259 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14260 | int count) | |
c906108c | 14261 | { |
afe38095 | 14262 | int target_resources_ok; |
c906108c SS |
14263 | |
14264 | if (bpt->type == bp_hardware_breakpoint) | |
14265 | { | |
14266 | int i; | |
c5aa993b | 14267 | i = hw_breakpoint_used_count (); |
53a5351d | 14268 | target_resources_ok = |
d92524f1 | 14269 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14270 | i + 1, 0); |
c906108c | 14271 | if (target_resources_ok == 0) |
8a3fe4f8 | 14272 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14273 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14274 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14275 | } |
14276 | ||
cc60f2e3 | 14277 | if (is_watchpoint (bpt)) |
c906108c | 14278 | { |
d07205c2 | 14279 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14280 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14281 | |
a70b8144 | 14282 | try |
c906108c | 14283 | { |
3a5c3e22 PA |
14284 | struct watchpoint *w = (struct watchpoint *) bpt; |
14285 | ||
1e718ff1 TJB |
14286 | orig_enable_state = bpt->enable_state; |
14287 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14288 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14289 | } |
230d2906 | 14290 | catch (const gdb_exception &e) |
c5aa993b | 14291 | { |
1e718ff1 | 14292 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14293 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14294 | bpt->number); | |
14295 | return; | |
c5aa993b | 14296 | } |
c906108c | 14297 | } |
0101ce28 | 14298 | |
b775012e LM |
14299 | bpt->enable_state = bp_enabled; |
14300 | ||
14301 | /* Mark breakpoint locations modified. */ | |
14302 | mark_breakpoint_modified (bpt); | |
14303 | ||
d248b706 KY |
14304 | if (target_supports_enable_disable_tracepoint () |
14305 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14306 | { | |
14307 | struct bp_location *location; | |
14308 | ||
14309 | for (location = bpt->loc; location; location = location->next) | |
14310 | target_enable_tracepoint (location); | |
14311 | } | |
14312 | ||
b4c291bb | 14313 | bpt->disposition = disposition; |
816338b5 | 14314 | bpt->enable_count = count; |
44702360 | 14315 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14316 | |
76727919 | 14317 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14318 | } |
14319 | ||
fe3f5fa8 | 14320 | |
c906108c | 14321 | void |
fba45db2 | 14322 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14323 | { |
816338b5 | 14324 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14325 | } |
14326 | ||
d0fe4701 XR |
14327 | /* The enable command enables the specified breakpoints/locations (or |
14328 | all defined breakpoints) so they once again become (or continue to | |
14329 | be) effective in stopping the inferior. ARGS may be in any of the | |
14330 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14331 | |
c906108c | 14332 | static void |
981a3fb3 | 14333 | enable_command (const char *args, int from_tty) |
c906108c | 14334 | { |
d0fe4701 | 14335 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14336 | } |
14337 | ||
c906108c | 14338 | static void |
4495129a | 14339 | enable_once_command (const char *args, int from_tty) |
c906108c | 14340 | { |
48649e1b TT |
14341 | map_breakpoint_numbers |
14342 | (args, [&] (breakpoint *b) | |
14343 | { | |
14344 | iterate_over_related_breakpoints | |
14345 | (b, [&] (breakpoint *bpt) | |
14346 | { | |
14347 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14348 | }); | |
14349 | }); | |
816338b5 SS |
14350 | } |
14351 | ||
14352 | static void | |
4495129a | 14353 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14354 | { |
b9d61307 SM |
14355 | int count; |
14356 | ||
14357 | if (args == NULL) | |
14358 | error_no_arg (_("hit count")); | |
14359 | ||
14360 | count = get_number (&args); | |
816338b5 | 14361 | |
48649e1b TT |
14362 | map_breakpoint_numbers |
14363 | (args, [&] (breakpoint *b) | |
14364 | { | |
14365 | iterate_over_related_breakpoints | |
14366 | (b, [&] (breakpoint *bpt) | |
14367 | { | |
14368 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14369 | }); | |
14370 | }); | |
c906108c SS |
14371 | } |
14372 | ||
c906108c | 14373 | static void |
4495129a | 14374 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14375 | { |
48649e1b TT |
14376 | map_breakpoint_numbers |
14377 | (args, [&] (breakpoint *b) | |
14378 | { | |
14379 | iterate_over_related_breakpoints | |
14380 | (b, [&] (breakpoint *bpt) | |
14381 | { | |
14382 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14383 | }); | |
14384 | }); | |
c906108c SS |
14385 | } |
14386 | \f | |
fa8d40ab | 14387 | static void |
981a3fb3 | 14388 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14389 | { |
14390 | } | |
14391 | ||
14392 | static void | |
981a3fb3 | 14393 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14394 | { |
14395 | } | |
14396 | ||
1f3b5d1b PP |
14397 | /* Invalidate last known value of any hardware watchpoint if |
14398 | the memory which that value represents has been written to by | |
14399 | GDB itself. */ | |
14400 | ||
14401 | static void | |
8de0566d YQ |
14402 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14403 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14404 | const bfd_byte *data) |
14405 | { | |
14406 | struct breakpoint *bp; | |
14407 | ||
14408 | ALL_BREAKPOINTS (bp) | |
14409 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14410 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14411 | { |
3a5c3e22 | 14412 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14413 | |
850645cf | 14414 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14415 | { |
14416 | struct bp_location *loc; | |
14417 | ||
14418 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14419 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14420 | && loc->address + loc->length > addr | |
14421 | && addr + len > loc->address) | |
14422 | { | |
3a5c3e22 PA |
14423 | wp->val = NULL; |
14424 | wp->val_valid = 0; | |
14425 | } | |
14426 | } | |
1f3b5d1b PP |
14427 | } |
14428 | } | |
14429 | ||
8181d85f DJ |
14430 | /* Create and insert a breakpoint for software single step. */ |
14431 | ||
14432 | void | |
6c95b8df | 14433 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14434 | const address_space *aspace, |
4a64f543 | 14435 | CORE_ADDR next_pc) |
8181d85f | 14436 | { |
7c16b83e PA |
14437 | struct thread_info *tp = inferior_thread (); |
14438 | struct symtab_and_line sal; | |
14439 | CORE_ADDR pc = next_pc; | |
8181d85f | 14440 | |
34b7e8a6 PA |
14441 | if (tp->control.single_step_breakpoints == NULL) |
14442 | { | |
14443 | tp->control.single_step_breakpoints | |
5d5658a1 | 14444 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14445 | } |
8181d85f | 14446 | |
7c16b83e PA |
14447 | sal = find_pc_line (pc, 0); |
14448 | sal.pc = pc; | |
14449 | sal.section = find_pc_overlay (pc); | |
14450 | sal.explicit_pc = 1; | |
34b7e8a6 | 14451 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14452 | |
7c16b83e | 14453 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14454 | } |
14455 | ||
93f9a11f YQ |
14456 | /* Insert single step breakpoints according to the current state. */ |
14457 | ||
14458 | int | |
14459 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14460 | { | |
f5ea389a | 14461 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14462 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14463 | |
f5ea389a | 14464 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14465 | |
a0ff9e1a | 14466 | if (!next_pcs.empty ()) |
93f9a11f | 14467 | { |
f5ea389a | 14468 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14469 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14470 | |
a0ff9e1a | 14471 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14472 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14473 | ||
93f9a11f YQ |
14474 | return 1; |
14475 | } | |
14476 | else | |
14477 | return 0; | |
14478 | } | |
14479 | ||
34b7e8a6 | 14480 | /* See breakpoint.h. */ |
f02253f1 HZ |
14481 | |
14482 | int | |
7c16b83e | 14483 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14484 | const address_space *aspace, |
7c16b83e | 14485 | CORE_ADDR pc) |
1aafd4da | 14486 | { |
7c16b83e | 14487 | struct bp_location *loc; |
1aafd4da | 14488 | |
7c16b83e PA |
14489 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14490 | if (loc->inserted | |
14491 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14492 | return 1; | |
1aafd4da | 14493 | |
7c16b83e | 14494 | return 0; |
ef370185 JB |
14495 | } |
14496 | ||
14497 | /* Check whether a software single-step breakpoint is inserted at | |
14498 | PC. */ | |
14499 | ||
14500 | int | |
accd0bcd | 14501 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14502 | CORE_ADDR pc) |
14503 | { | |
34b7e8a6 PA |
14504 | struct breakpoint *bpt; |
14505 | ||
14506 | ALL_BREAKPOINTS (bpt) | |
14507 | { | |
14508 | if (bpt->type == bp_single_step | |
14509 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14510 | return 1; | |
14511 | } | |
14512 | return 0; | |
1aafd4da UW |
14513 | } |
14514 | ||
1042e4c0 SS |
14515 | /* Tracepoint-specific operations. */ |
14516 | ||
14517 | /* Set tracepoint count to NUM. */ | |
14518 | static void | |
14519 | set_tracepoint_count (int num) | |
14520 | { | |
14521 | tracepoint_count = num; | |
4fa62494 | 14522 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14523 | } |
14524 | ||
70221824 | 14525 | static void |
0b39b52e | 14526 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14527 | { |
55aa24fb | 14528 | struct breakpoint_ops *ops; |
55aa24fb | 14529 | |
ffc2605c TT |
14530 | event_location_up location = string_to_event_location (&arg, |
14531 | current_language); | |
5b56227b | 14532 | if (location != NULL |
ffc2605c | 14533 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14534 | ops = &tracepoint_probe_breakpoint_ops; |
14535 | else | |
14536 | ops = &tracepoint_breakpoint_ops; | |
14537 | ||
558a9d82 | 14538 | create_breakpoint (get_current_arch (), |
ffc2605c | 14539 | location.get (), |
f00aae0f | 14540 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14541 | 0 /* tempflag */, |
14542 | bp_tracepoint /* type_wanted */, | |
14543 | 0 /* Ignore count */, | |
14544 | pending_break_support, | |
14545 | ops, | |
14546 | from_tty, | |
14547 | 1 /* enabled */, | |
14548 | 0 /* internal */, 0); | |
1042e4c0 SS |
14549 | } |
14550 | ||
70221824 | 14551 | static void |
0b39b52e | 14552 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14553 | { |
ffc2605c TT |
14554 | event_location_up location = string_to_event_location (&arg, |
14555 | current_language); | |
558a9d82 | 14556 | create_breakpoint (get_current_arch (), |
ffc2605c | 14557 | location.get (), |
f00aae0f | 14558 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14559 | 0 /* tempflag */, |
14560 | bp_fast_tracepoint /* type_wanted */, | |
14561 | 0 /* Ignore count */, | |
14562 | pending_break_support, | |
14563 | &tracepoint_breakpoint_ops, | |
14564 | from_tty, | |
14565 | 1 /* enabled */, | |
14566 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14567 | } |
14568 | ||
14569 | /* strace command implementation. Creates a static tracepoint. */ | |
14570 | ||
70221824 | 14571 | static void |
0b39b52e | 14572 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14573 | { |
983af33b | 14574 | struct breakpoint_ops *ops; |
ffc2605c | 14575 | event_location_up location; |
983af33b SDJ |
14576 | |
14577 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14578 | or with a normal static tracepoint. */ | |
61012eef | 14579 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14580 | { |
14581 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14582 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14583 | } |
983af33b | 14584 | else |
f00aae0f KS |
14585 | { |
14586 | ops = &tracepoint_breakpoint_ops; | |
14587 | location = string_to_event_location (&arg, current_language); | |
14588 | } | |
983af33b | 14589 | |
558a9d82 | 14590 | create_breakpoint (get_current_arch (), |
ffc2605c | 14591 | location.get (), |
f00aae0f | 14592 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14593 | 0 /* tempflag */, |
14594 | bp_static_tracepoint /* type_wanted */, | |
14595 | 0 /* Ignore count */, | |
14596 | pending_break_support, | |
14597 | ops, | |
14598 | from_tty, | |
14599 | 1 /* enabled */, | |
14600 | 0 /* internal */, 0); | |
7a697b8d SS |
14601 | } |
14602 | ||
409873ef SS |
14603 | /* Set up a fake reader function that gets command lines from a linked |
14604 | list that was acquired during tracepoint uploading. */ | |
14605 | ||
14606 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14607 | static int next_cmd; |
409873ef SS |
14608 | |
14609 | static char * | |
14610 | read_uploaded_action (void) | |
14611 | { | |
a18ba4e4 | 14612 | char *rslt = nullptr; |
409873ef | 14613 | |
a18ba4e4 SM |
14614 | if (next_cmd < this_utp->cmd_strings.size ()) |
14615 | { | |
67aa1f3c | 14616 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14617 | next_cmd++; |
14618 | } | |
409873ef SS |
14619 | |
14620 | return rslt; | |
14621 | } | |
14622 | ||
00bf0b85 SS |
14623 | /* Given information about a tracepoint as recorded on a target (which |
14624 | can be either a live system or a trace file), attempt to create an | |
14625 | equivalent GDB tracepoint. This is not a reliable process, since | |
14626 | the target does not necessarily have all the information used when | |
14627 | the tracepoint was originally defined. */ | |
14628 | ||
d9b3f62e | 14629 | struct tracepoint * |
00bf0b85 | 14630 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14631 | { |
f2fc3015 TT |
14632 | const char *addr_str; |
14633 | char small_buf[100]; | |
d9b3f62e | 14634 | struct tracepoint *tp; |
fd9b8c24 | 14635 | |
409873ef | 14636 | if (utp->at_string) |
67aa1f3c | 14637 | addr_str = utp->at_string.get (); |
409873ef SS |
14638 | else |
14639 | { | |
14640 | /* In the absence of a source location, fall back to raw | |
14641 | address. Since there is no way to confirm that the address | |
14642 | means the same thing as when the trace was started, warn the | |
14643 | user. */ | |
3e43a32a MS |
14644 | warning (_("Uploaded tracepoint %d has no " |
14645 | "source location, using raw address"), | |
409873ef | 14646 | utp->number); |
8c042590 | 14647 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14648 | addr_str = small_buf; |
14649 | } | |
14650 | ||
14651 | /* There's not much we can do with a sequence of bytecodes. */ | |
14652 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14653 | warning (_("Uploaded tracepoint %d condition " |
14654 | "has no source form, ignoring it"), | |
409873ef | 14655 | utp->number); |
d5551862 | 14656 | |
ffc2605c TT |
14657 | event_location_up location = string_to_event_location (&addr_str, |
14658 | current_language); | |
8cdf0e15 | 14659 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14660 | location.get (), |
67aa1f3c | 14661 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14662 | 0 /* parse cond/thread */, |
8cdf0e15 | 14663 | 0 /* tempflag */, |
0fb4aa4b | 14664 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14665 | 0 /* Ignore count */, |
14666 | pending_break_support, | |
348d480f | 14667 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14668 | 0 /* from_tty */, |
84f4c1fe | 14669 | utp->enabled /* enabled */, |
44f238bb PA |
14670 | 0 /* internal */, |
14671 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14672 | return NULL; |
fd9b8c24 | 14673 | |
409873ef | 14674 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14675 | tp = get_tracepoint (tracepoint_count); |
14676 | gdb_assert (tp != NULL); | |
d5551862 | 14677 | |
00bf0b85 SS |
14678 | if (utp->pass > 0) |
14679 | { | |
8c042590 | 14680 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14681 | tp->number); |
00bf0b85 | 14682 | |
409873ef | 14683 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14684 | } |
14685 | ||
409873ef SS |
14686 | /* If we have uploaded versions of the original commands, set up a |
14687 | special-purpose "reader" function and call the usual command line | |
14688 | reader, then pass the result to the breakpoint command-setting | |
14689 | function. */ | |
a18ba4e4 | 14690 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14691 | { |
12973681 | 14692 | counted_command_line cmd_list; |
00bf0b85 | 14693 | |
409873ef | 14694 | this_utp = utp; |
3149d8c1 | 14695 | next_cmd = 0; |
d5551862 | 14696 | |
60b3cef2 | 14697 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14698 | |
c1fc2657 | 14699 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14700 | } |
a18ba4e4 SM |
14701 | else if (!utp->actions.empty () |
14702 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14703 | warning (_("Uploaded tracepoint %d actions " |
14704 | "have no source form, ignoring them"), | |
409873ef | 14705 | utp->number); |
00bf0b85 | 14706 | |
f196051f | 14707 | /* Copy any status information that might be available. */ |
c1fc2657 | 14708 | tp->hit_count = utp->hit_count; |
f196051f SS |
14709 | tp->traceframe_usage = utp->traceframe_usage; |
14710 | ||
00bf0b85 | 14711 | return tp; |
d9b3f62e | 14712 | } |
00bf0b85 | 14713 | |
1042e4c0 SS |
14714 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14715 | omitted. */ | |
14716 | ||
14717 | static void | |
1d12d88f | 14718 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14719 | { |
79a45e25 | 14720 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14721 | int num_printed; |
1042e4c0 | 14722 | |
e5a67952 | 14723 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14724 | |
14725 | if (num_printed == 0) | |
1042e4c0 | 14726 | { |
e5a67952 | 14727 | if (args == NULL || *args == '\0') |
112e8700 | 14728 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14729 | else |
112e8700 | 14730 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14731 | } |
ad443146 SS |
14732 | |
14733 | default_collect_info (); | |
1042e4c0 SS |
14734 | } |
14735 | ||
4a64f543 | 14736 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14737 | Not supported by all targets. */ |
14738 | static void | |
5fed81ff | 14739 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14740 | { |
14741 | enable_command (args, from_tty); | |
14742 | } | |
14743 | ||
4a64f543 | 14744 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14745 | Not supported by all targets. */ |
14746 | static void | |
5fed81ff | 14747 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14748 | { |
14749 | disable_command (args, from_tty); | |
14750 | } | |
14751 | ||
4a64f543 | 14752 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14753 | static void |
4495129a | 14754 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14755 | { |
35df4500 | 14756 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14757 | |
14758 | dont_repeat (); | |
14759 | ||
14760 | if (arg == 0) | |
14761 | { | |
14762 | int breaks_to_delete = 0; | |
14763 | ||
14764 | /* Delete all breakpoints if no argument. | |
14765 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14766 | have to be deleted with an explicit breakpoint number |
14767 | argument. */ | |
1042e4c0 | 14768 | ALL_TRACEPOINTS (b) |
46c6471b | 14769 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14770 | { |
14771 | breaks_to_delete = 1; | |
14772 | break; | |
14773 | } | |
1042e4c0 SS |
14774 | |
14775 | /* Ask user only if there are some breakpoints to delete. */ | |
14776 | if (!from_tty | |
14777 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14778 | { | |
35df4500 | 14779 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14780 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14781 | delete_breakpoint (b); |
1042e4c0 SS |
14782 | } |
14783 | } | |
14784 | else | |
48649e1b | 14785 | map_breakpoint_numbers |
b926417a | 14786 | (arg, [&] (breakpoint *br) |
48649e1b | 14787 | { |
b926417a | 14788 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14789 | }); |
1042e4c0 SS |
14790 | } |
14791 | ||
197f0a60 TT |
14792 | /* Helper function for trace_pass_command. */ |
14793 | ||
14794 | static void | |
d9b3f62e | 14795 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14796 | { |
d9b3f62e | 14797 | tp->pass_count = count; |
76727919 | 14798 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14799 | if (from_tty) |
14800 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14801 | tp->number, count); |
197f0a60 TT |
14802 | } |
14803 | ||
1042e4c0 SS |
14804 | /* Set passcount for tracepoint. |
14805 | ||
14806 | First command argument is passcount, second is tracepoint number. | |
14807 | If tracepoint number omitted, apply to most recently defined. | |
14808 | Also accepts special argument "all". */ | |
14809 | ||
14810 | static void | |
0b39b52e | 14811 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14812 | { |
d9b3f62e | 14813 | struct tracepoint *t1; |
0b39b52e | 14814 | ULONGEST count; |
1042e4c0 SS |
14815 | |
14816 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14817 | error (_("passcount command requires an " |
14818 | "argument (count + optional TP num)")); | |
1042e4c0 | 14819 | |
0b39b52e | 14820 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14821 | |
529480d0 | 14822 | args = skip_spaces (args); |
1042e4c0 SS |
14823 | if (*args && strncasecmp (args, "all", 3) == 0) |
14824 | { | |
d9b3f62e PA |
14825 | struct breakpoint *b; |
14826 | ||
1042e4c0 | 14827 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14828 | if (*args) |
14829 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14830 | |
d9b3f62e | 14831 | ALL_TRACEPOINTS (b) |
197f0a60 | 14832 | { |
d9b3f62e | 14833 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14834 | trace_pass_set_count (t1, count, from_tty); |
14835 | } | |
14836 | } | |
14837 | else if (*args == '\0') | |
1042e4c0 | 14838 | { |
5fa1d40e | 14839 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14840 | if (t1) |
197f0a60 TT |
14841 | trace_pass_set_count (t1, count, from_tty); |
14842 | } | |
14843 | else | |
14844 | { | |
bfd28288 PA |
14845 | number_or_range_parser parser (args); |
14846 | while (!parser.finished ()) | |
1042e4c0 | 14847 | { |
bfd28288 | 14848 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14849 | if (t1) |
14850 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14851 | } |
14852 | } | |
1042e4c0 SS |
14853 | } |
14854 | ||
d9b3f62e | 14855 | struct tracepoint * |
1042e4c0 SS |
14856 | get_tracepoint (int num) |
14857 | { | |
14858 | struct breakpoint *t; | |
14859 | ||
14860 | ALL_TRACEPOINTS (t) | |
14861 | if (t->number == num) | |
d9b3f62e | 14862 | return (struct tracepoint *) t; |
1042e4c0 SS |
14863 | |
14864 | return NULL; | |
14865 | } | |
14866 | ||
d5551862 SS |
14867 | /* Find the tracepoint with the given target-side number (which may be |
14868 | different from the tracepoint number after disconnecting and | |
14869 | reconnecting). */ | |
14870 | ||
d9b3f62e | 14871 | struct tracepoint * |
d5551862 SS |
14872 | get_tracepoint_by_number_on_target (int num) |
14873 | { | |
d9b3f62e | 14874 | struct breakpoint *b; |
d5551862 | 14875 | |
d9b3f62e PA |
14876 | ALL_TRACEPOINTS (b) |
14877 | { | |
14878 | struct tracepoint *t = (struct tracepoint *) b; | |
14879 | ||
14880 | if (t->number_on_target == num) | |
14881 | return t; | |
14882 | } | |
d5551862 SS |
14883 | |
14884 | return NULL; | |
14885 | } | |
14886 | ||
1042e4c0 | 14887 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14888 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14889 | If the argument is missing, the most recent tracepoint |
14890 | (tracepoint_count) is returned. */ | |
14891 | ||
d9b3f62e | 14892 | struct tracepoint * |
0b39b52e | 14893 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14894 | number_or_range_parser *parser) |
1042e4c0 | 14895 | { |
1042e4c0 SS |
14896 | struct breakpoint *t; |
14897 | int tpnum; | |
0b39b52e | 14898 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14899 | |
bfd28288 | 14900 | if (parser != NULL) |
197f0a60 | 14901 | { |
bfd28288 PA |
14902 | gdb_assert (!parser->finished ()); |
14903 | tpnum = parser->get_number (); | |
197f0a60 TT |
14904 | } |
14905 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14906 | tpnum = tracepoint_count; |
1042e4c0 | 14907 | else |
197f0a60 | 14908 | tpnum = get_number (arg); |
1042e4c0 SS |
14909 | |
14910 | if (tpnum <= 0) | |
14911 | { | |
14912 | if (instring && *instring) | |
14913 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14914 | instring); | |
14915 | else | |
5fa1d40e | 14916 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14917 | return NULL; |
14918 | } | |
14919 | ||
14920 | ALL_TRACEPOINTS (t) | |
14921 | if (t->number == tpnum) | |
14922 | { | |
d9b3f62e | 14923 | return (struct tracepoint *) t; |
1042e4c0 SS |
14924 | } |
14925 | ||
1042e4c0 SS |
14926 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14927 | return NULL; | |
14928 | } | |
14929 | ||
d9b3f62e PA |
14930 | void |
14931 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14932 | { | |
14933 | if (b->thread != -1) | |
14934 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14935 | ||
14936 | if (b->task != 0) | |
14937 | fprintf_unfiltered (fp, " task %d", b->task); | |
14938 | ||
14939 | fprintf_unfiltered (fp, "\n"); | |
14940 | } | |
14941 | ||
6149aea9 PA |
14942 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14943 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14944 | on each breakpoint and only include the ones for which it returns | |
14945 | non-zero. */ | |
14946 | ||
1042e4c0 | 14947 | static void |
4495129a | 14948 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 14949 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14950 | { |
14951 | struct breakpoint *tp; | |
6149aea9 | 14952 | int any = 0; |
6149aea9 | 14953 | int extra_trace_bits = 0; |
1042e4c0 | 14954 | |
6149aea9 PA |
14955 | if (filename == 0 || *filename == 0) |
14956 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14957 | |
14958 | /* See if we have anything to save. */ | |
6149aea9 | 14959 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14960 | { |
6149aea9 | 14961 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14962 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14963 | continue; |
14964 | ||
14965 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14966 | if (filter && !filter (tp)) | |
14967 | continue; | |
14968 | ||
14969 | any = 1; | |
14970 | ||
14971 | if (is_tracepoint (tp)) | |
14972 | { | |
14973 | extra_trace_bits = 1; | |
14974 | ||
14975 | /* We can stop searching. */ | |
14976 | break; | |
14977 | } | |
1042e4c0 | 14978 | } |
6149aea9 PA |
14979 | |
14980 | if (!any) | |
1042e4c0 | 14981 | { |
6149aea9 | 14982 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14983 | return; |
14984 | } | |
14985 | ||
ee0c3293 | 14986 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14987 | |
14988 | stdio_file fp; | |
14989 | ||
ee0c3293 | 14990 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14991 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14992 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14993 | |
6149aea9 | 14994 | if (extra_trace_bits) |
d7e74731 | 14995 | save_trace_state_variables (&fp); |
8bf6485c | 14996 | |
6149aea9 | 14997 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14998 | { |
6149aea9 | 14999 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15000 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15001 | continue; |
8bf6485c | 15002 | |
6149aea9 PA |
15003 | /* If we have a filter, only save the breakpoints it accepts. */ |
15004 | if (filter && !filter (tp)) | |
15005 | continue; | |
15006 | ||
d7e74731 | 15007 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15008 | |
6149aea9 PA |
15009 | /* Note, we can't rely on tp->number for anything, as we can't |
15010 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15011 | instead. */ | |
15012 | ||
15013 | if (tp->cond_string) | |
d7e74731 | 15014 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15015 | |
15016 | if (tp->ignore_count) | |
d7e74731 | 15017 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15018 | |
2d9442cc | 15019 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15020 | { |
d7e74731 | 15021 | fp.puts (" commands\n"); |
a7bdde9e | 15022 | |
d7e74731 | 15023 | current_uiout->redirect (&fp); |
a70b8144 | 15024 | try |
1042e4c0 | 15025 | { |
d1b0a7bf | 15026 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15027 | } |
230d2906 | 15028 | catch (const gdb_exception &ex) |
492d29ea | 15029 | { |
112e8700 | 15030 | current_uiout->redirect (NULL); |
eedc3f4f | 15031 | throw; |
492d29ea | 15032 | } |
1042e4c0 | 15033 | |
112e8700 | 15034 | current_uiout->redirect (NULL); |
d7e74731 | 15035 | fp.puts (" end\n"); |
1042e4c0 | 15036 | } |
6149aea9 PA |
15037 | |
15038 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15039 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15040 | |
15041 | /* If this is a multi-location breakpoint, check if the locations | |
15042 | should be individually disabled. Watchpoint locations are | |
15043 | special, and not user visible. */ | |
15044 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15045 | { | |
15046 | struct bp_location *loc; | |
15047 | int n = 1; | |
15048 | ||
15049 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15050 | if (!loc->enabled) | |
d7e74731 | 15051 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15052 | } |
1042e4c0 | 15053 | } |
8bf6485c | 15054 | |
6149aea9 | 15055 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15056 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15057 | |
1042e4c0 | 15058 | if (from_tty) |
ee0c3293 | 15059 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15060 | } |
15061 | ||
15062 | /* The `save breakpoints' command. */ | |
15063 | ||
15064 | static void | |
4495129a | 15065 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15066 | { |
15067 | save_breakpoints (args, from_tty, NULL); | |
15068 | } | |
15069 | ||
15070 | /* The `save tracepoints' command. */ | |
15071 | ||
15072 | static void | |
4495129a | 15073 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15074 | { |
15075 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15076 | } |
15077 | ||
15078 | /* Create a vector of all tracepoints. */ | |
15079 | ||
f51e0e20 | 15080 | std::vector<breakpoint *> |
eeae04df | 15081 | all_tracepoints (void) |
1042e4c0 | 15082 | { |
f51e0e20 | 15083 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15084 | struct breakpoint *tp; |
15085 | ||
15086 | ALL_TRACEPOINTS (tp) | |
15087 | { | |
f51e0e20 | 15088 | tp_vec.push_back (tp); |
1042e4c0 SS |
15089 | } |
15090 | ||
15091 | return tp_vec; | |
15092 | } | |
15093 | ||
c906108c | 15094 | \f |
629500fa KS |
15095 | /* This help string is used to consolidate all the help string for specifying |
15096 | locations used by several commands. */ | |
15097 | ||
15098 | #define LOCATION_HELP_STRING \ | |
15099 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15100 | source filename, function name, label name, and line number.\n\ | |
15101 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15102 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15103 | \"factorial.c:fact:the_top\".\n\ | |
15104 | \n\ | |
15105 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15106 | program. Example: To specify the fourth byte past the start function\n\ | |
15107 | \"main\", use \"*main + 4\".\n\ | |
15108 | \n\ | |
15109 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15110 | syntax to specify location parameters.\n\ | |
15111 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15112 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15113 | -function fact -label the_top\".\n\ |
15114 | \n\ | |
15115 | By default, a specified function is matched against the program's\n\ | |
15116 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15117 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15118 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15119 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
15120 | specified name as a complete fully-qualified name instead.\n" | |
629500fa | 15121 | |
4a64f543 MS |
15122 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15123 | commands. It is defined as a macro to prevent duplication. | |
15124 | COMMAND should be a string constant containing the name of the | |
15125 | command. */ | |
629500fa | 15126 | |
31e2b00f | 15127 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15128 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15129 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15130 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15131 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15132 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15133 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15134 | below.\n\ | |
15135 | \n\ | |
dc10affe PA |
15136 | With no LOCATION, uses current execution address of the selected\n\ |
15137 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15138 | \n\ |
15139 | THREADNUM is the number from \"info threads\".\n\ | |
15140 | CONDITION is a boolean expression.\n\ | |
629500fa | 15141 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15142 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15143 | conditions are different.\n\ | |
31e2b00f AS |
15144 | \n\ |
15145 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15146 | ||
44feb3ce TT |
15147 | /* List of subcommands for "catch". */ |
15148 | static struct cmd_list_element *catch_cmdlist; | |
15149 | ||
15150 | /* List of subcommands for "tcatch". */ | |
15151 | static struct cmd_list_element *tcatch_cmdlist; | |
15152 | ||
9ac4176b | 15153 | void |
a121b7c1 | 15154 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15155 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15156 | completer_ftype *completer, |
44feb3ce TT |
15157 | void *user_data_catch, |
15158 | void *user_data_tcatch) | |
15159 | { | |
15160 | struct cmd_list_element *command; | |
15161 | ||
0450cc4c | 15162 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15163 | &catch_cmdlist); |
15164 | set_cmd_sfunc (command, sfunc); | |
15165 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15166 | set_cmd_completer (command, completer); |
44feb3ce | 15167 | |
0450cc4c | 15168 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15169 | &tcatch_cmdlist); |
15170 | set_cmd_sfunc (command, sfunc); | |
15171 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15172 | set_cmd_completer (command, completer); |
44feb3ce TT |
15173 | } |
15174 | ||
6149aea9 | 15175 | static void |
981a3fb3 | 15176 | save_command (const char *arg, int from_tty) |
6149aea9 | 15177 | { |
3e43a32a MS |
15178 | printf_unfiltered (_("\"save\" must be followed by " |
15179 | "the name of a save subcommand.\n")); | |
635c7e8a | 15180 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15181 | } |
15182 | ||
84f4c1fe PM |
15183 | struct breakpoint * |
15184 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15185 | void *data) | |
15186 | { | |
35df4500 | 15187 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15188 | |
35df4500 | 15189 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15190 | { |
15191 | if ((*callback) (b, data)) | |
15192 | return b; | |
15193 | } | |
15194 | ||
15195 | return NULL; | |
15196 | } | |
15197 | ||
0574c78f GB |
15198 | /* Zero if any of the breakpoint's locations could be a location where |
15199 | functions have been inlined, nonzero otherwise. */ | |
15200 | ||
15201 | static int | |
15202 | is_non_inline_function (struct breakpoint *b) | |
15203 | { | |
15204 | /* The shared library event breakpoint is set on the address of a | |
15205 | non-inline function. */ | |
15206 | if (b->type == bp_shlib_event) | |
15207 | return 1; | |
15208 | ||
15209 | return 0; | |
15210 | } | |
15211 | ||
15212 | /* Nonzero if the specified PC cannot be a location where functions | |
15213 | have been inlined. */ | |
15214 | ||
15215 | int | |
accd0bcd | 15216 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15217 | const struct target_waitstatus *ws) |
0574c78f GB |
15218 | { |
15219 | struct breakpoint *b; | |
15220 | struct bp_location *bl; | |
15221 | ||
15222 | ALL_BREAKPOINTS (b) | |
15223 | { | |
15224 | if (!is_non_inline_function (b)) | |
15225 | continue; | |
15226 | ||
15227 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15228 | { | |
15229 | if (!bl->shlib_disabled | |
09ac7c10 | 15230 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15231 | return 1; |
15232 | } | |
15233 | } | |
15234 | ||
15235 | return 0; | |
15236 | } | |
15237 | ||
2f202fde JK |
15238 | /* Remove any references to OBJFILE which is going to be freed. */ |
15239 | ||
15240 | void | |
15241 | breakpoint_free_objfile (struct objfile *objfile) | |
15242 | { | |
15243 | struct bp_location **locp, *loc; | |
15244 | ||
15245 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15246 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15247 | loc->symtab = NULL; |
15248 | } | |
15249 | ||
2060206e PA |
15250 | void |
15251 | initialize_breakpoint_ops (void) | |
15252 | { | |
15253 | static int initialized = 0; | |
15254 | ||
15255 | struct breakpoint_ops *ops; | |
15256 | ||
15257 | if (initialized) | |
15258 | return; | |
15259 | initialized = 1; | |
15260 | ||
15261 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15262 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15263 | internal and momentary breakpoints, etc.). */ | |
15264 | ops = &bkpt_base_breakpoint_ops; | |
15265 | *ops = base_breakpoint_ops; | |
15266 | ops->re_set = bkpt_re_set; | |
15267 | ops->insert_location = bkpt_insert_location; | |
15268 | ops->remove_location = bkpt_remove_location; | |
15269 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15270 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15271 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15272 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15273 | |
15274 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15275 | ops = &bkpt_breakpoint_ops; | |
15276 | *ops = bkpt_base_breakpoint_ops; | |
15277 | ops->re_set = bkpt_re_set; | |
15278 | ops->resources_needed = bkpt_resources_needed; | |
15279 | ops->print_it = bkpt_print_it; | |
15280 | ops->print_mention = bkpt_print_mention; | |
15281 | ops->print_recreate = bkpt_print_recreate; | |
15282 | ||
15283 | /* Ranged breakpoints. */ | |
15284 | ops = &ranged_breakpoint_ops; | |
15285 | *ops = bkpt_breakpoint_ops; | |
15286 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15287 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15288 | ops->print_it = print_it_ranged_breakpoint; | |
15289 | ops->print_one = print_one_ranged_breakpoint; | |
15290 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15291 | ops->print_mention = print_mention_ranged_breakpoint; | |
15292 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15293 | ||
15294 | /* Internal breakpoints. */ | |
15295 | ops = &internal_breakpoint_ops; | |
15296 | *ops = bkpt_base_breakpoint_ops; | |
15297 | ops->re_set = internal_bkpt_re_set; | |
15298 | ops->check_status = internal_bkpt_check_status; | |
15299 | ops->print_it = internal_bkpt_print_it; | |
15300 | ops->print_mention = internal_bkpt_print_mention; | |
15301 | ||
15302 | /* Momentary breakpoints. */ | |
15303 | ops = &momentary_breakpoint_ops; | |
15304 | *ops = bkpt_base_breakpoint_ops; | |
15305 | ops->re_set = momentary_bkpt_re_set; | |
15306 | ops->check_status = momentary_bkpt_check_status; | |
15307 | ops->print_it = momentary_bkpt_print_it; | |
15308 | ops->print_mention = momentary_bkpt_print_mention; | |
15309 | ||
55aa24fb SDJ |
15310 | /* Probe breakpoints. */ |
15311 | ops = &bkpt_probe_breakpoint_ops; | |
15312 | *ops = bkpt_breakpoint_ops; | |
15313 | ops->insert_location = bkpt_probe_insert_location; | |
15314 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15315 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15316 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15317 | |
2060206e PA |
15318 | /* Watchpoints. */ |
15319 | ops = &watchpoint_breakpoint_ops; | |
15320 | *ops = base_breakpoint_ops; | |
15321 | ops->re_set = re_set_watchpoint; | |
15322 | ops->insert_location = insert_watchpoint; | |
15323 | ops->remove_location = remove_watchpoint; | |
15324 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15325 | ops->check_status = check_status_watchpoint; | |
15326 | ops->resources_needed = resources_needed_watchpoint; | |
15327 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15328 | ops->print_it = print_it_watchpoint; | |
15329 | ops->print_mention = print_mention_watchpoint; | |
15330 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15331 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15332 | |
15333 | /* Masked watchpoints. */ | |
15334 | ops = &masked_watchpoint_breakpoint_ops; | |
15335 | *ops = watchpoint_breakpoint_ops; | |
15336 | ops->insert_location = insert_masked_watchpoint; | |
15337 | ops->remove_location = remove_masked_watchpoint; | |
15338 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15339 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15340 | ops->print_it = print_it_masked_watchpoint; | |
15341 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15342 | ops->print_mention = print_mention_masked_watchpoint; | |
15343 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15344 | ||
15345 | /* Tracepoints. */ | |
15346 | ops = &tracepoint_breakpoint_ops; | |
15347 | *ops = base_breakpoint_ops; | |
15348 | ops->re_set = tracepoint_re_set; | |
15349 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15350 | ops->print_one_detail = tracepoint_print_one_detail; | |
15351 | ops->print_mention = tracepoint_print_mention; | |
15352 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15353 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15354 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15355 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15356 | |
55aa24fb SDJ |
15357 | /* Probe tracepoints. */ |
15358 | ops = &tracepoint_probe_breakpoint_ops; | |
15359 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15360 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15361 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15362 | |
983af33b SDJ |
15363 | /* Static tracepoints with marker (`-m'). */ |
15364 | ops = &strace_marker_breakpoint_ops; | |
15365 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15366 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15367 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15368 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15369 | |
15370 | /* Fork catchpoints. */ | |
15371 | ops = &catch_fork_breakpoint_ops; | |
15372 | *ops = base_breakpoint_ops; | |
15373 | ops->insert_location = insert_catch_fork; | |
15374 | ops->remove_location = remove_catch_fork; | |
15375 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15376 | ops->print_it = print_it_catch_fork; | |
15377 | ops->print_one = print_one_catch_fork; | |
15378 | ops->print_mention = print_mention_catch_fork; | |
15379 | ops->print_recreate = print_recreate_catch_fork; | |
15380 | ||
15381 | /* Vfork catchpoints. */ | |
15382 | ops = &catch_vfork_breakpoint_ops; | |
15383 | *ops = base_breakpoint_ops; | |
15384 | ops->insert_location = insert_catch_vfork; | |
15385 | ops->remove_location = remove_catch_vfork; | |
15386 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15387 | ops->print_it = print_it_catch_vfork; | |
15388 | ops->print_one = print_one_catch_vfork; | |
15389 | ops->print_mention = print_mention_catch_vfork; | |
15390 | ops->print_recreate = print_recreate_catch_vfork; | |
15391 | ||
15392 | /* Exec catchpoints. */ | |
15393 | ops = &catch_exec_breakpoint_ops; | |
15394 | *ops = base_breakpoint_ops; | |
2060206e PA |
15395 | ops->insert_location = insert_catch_exec; |
15396 | ops->remove_location = remove_catch_exec; | |
15397 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15398 | ops->print_it = print_it_catch_exec; | |
15399 | ops->print_one = print_one_catch_exec; | |
15400 | ops->print_mention = print_mention_catch_exec; | |
15401 | ops->print_recreate = print_recreate_catch_exec; | |
15402 | ||
edcc5120 TT |
15403 | /* Solib-related catchpoints. */ |
15404 | ops = &catch_solib_breakpoint_ops; | |
15405 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15406 | ops->insert_location = insert_catch_solib; |
15407 | ops->remove_location = remove_catch_solib; | |
15408 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15409 | ops->check_status = check_status_catch_solib; | |
15410 | ops->print_it = print_it_catch_solib; | |
15411 | ops->print_one = print_one_catch_solib; | |
15412 | ops->print_mention = print_mention_catch_solib; | |
15413 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15414 | |
15415 | ops = &dprintf_breakpoint_ops; | |
15416 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15417 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15418 | ops->resources_needed = bkpt_resources_needed; |
15419 | ops->print_it = bkpt_print_it; | |
15420 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15421 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15422 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15423 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15424 | } |
15425 | ||
8bfd80db YQ |
15426 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15427 | ||
15428 | static struct cmd_list_element *enablebreaklist = NULL; | |
15429 | ||
8588b356 SM |
15430 | /* See breakpoint.h. */ |
15431 | ||
15432 | cmd_list_element *commands_cmd_element = nullptr; | |
15433 | ||
c906108c | 15434 | void |
fba45db2 | 15435 | _initialize_breakpoint (void) |
c906108c SS |
15436 | { |
15437 | struct cmd_list_element *c; | |
15438 | ||
2060206e PA |
15439 | initialize_breakpoint_ops (); |
15440 | ||
76727919 TT |
15441 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15442 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15443 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15444 | |
c906108c SS |
15445 | breakpoint_chain = 0; |
15446 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15447 | before a breakpoint is set. */ | |
15448 | breakpoint_count = 0; | |
15449 | ||
1042e4c0 SS |
15450 | tracepoint_count = 0; |
15451 | ||
1bedd215 AC |
15452 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15453 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15454 | Usage is `ignore N COUNT'.")); | |
c906108c | 15455 | |
8588b356 SM |
15456 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15457 | commands_command, _("\ | |
18da0c51 MG |
15458 | Set commands to be executed when the given breakpoints are hit.\n\ |
15459 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15460 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15461 | (e.g. `5-7').\n\ | |
c906108c SS |
15462 | With no argument, the targeted breakpoint is the last one set.\n\ |
15463 | The commands themselves follow starting on the next line.\n\ | |
15464 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15465 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15466 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15467 | |
d55637df | 15468 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15469 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15470 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15471 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15472 | set_cmd_completer (c, condition_completer); |
c906108c | 15473 | |
1bedd215 | 15474 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15475 | Set a temporary breakpoint.\n\ |
c906108c SS |
15476 | Like \"break\" except the breakpoint is only temporary,\n\ |
15477 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15478 | by using \"enable delete\" on the breakpoint number.\n\ |
15479 | \n" | |
15480 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15481 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15482 | |
1bedd215 | 15483 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15484 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15485 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15486 | some target hardware may not have this support.\n\ |
15487 | \n" | |
15488 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15489 | set_cmd_completer (c, location_completer); |
c906108c | 15490 | |
1bedd215 | 15491 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15492 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15493 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15494 | so it will be deleted when hit.\n\ |
15495 | \n" | |
15496 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15497 | set_cmd_completer (c, location_completer); |
c906108c | 15498 | |
1bedd215 AC |
15499 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15500 | Enable some breakpoints.\n\ | |
c906108c SS |
15501 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15502 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15503 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15504 | With a subcommand you can enable temporarily."), |
c906108c | 15505 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15506 | |
15507 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15508 | ||
84951ab5 | 15509 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15510 | Enable some breakpoints.\n\ |
c906108c SS |
15511 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15512 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15513 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15514 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15515 | |
1a966eab AC |
15516 | add_cmd ("once", no_class, enable_once_command, _("\ |
15517 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15518 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15519 | &enablebreaklist); |
15520 | ||
1a966eab AC |
15521 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15522 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15523 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15524 | &enablebreaklist); |
15525 | ||
816338b5 SS |
15526 | add_cmd ("count", no_class, enable_count_command, _("\ |
15527 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15528 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15529 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15530 | &enablebreaklist); | |
15531 | ||
1a966eab AC |
15532 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15533 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15534 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15535 | &enablelist); |
15536 | ||
1a966eab AC |
15537 | add_cmd ("once", no_class, enable_once_command, _("\ |
15538 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15539 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15540 | &enablelist); |
15541 | ||
15542 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15543 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15544 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15545 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15546 | &enablelist); |
15547 | ||
1bedd215 AC |
15548 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15549 | Disable some breakpoints.\n\ | |
c906108c SS |
15550 | Arguments are breakpoint numbers with spaces in between.\n\ |
15551 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15552 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15553 | &disablelist, "disable ", 1, &cmdlist); |
15554 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15555 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15556 | |
1a966eab AC |
15557 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15558 | Disable some breakpoints.\n\ | |
c906108c SS |
15559 | Arguments are breakpoint numbers with spaces in between.\n\ |
15560 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15561 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15562 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15563 | &disablelist); |
15564 | ||
1bedd215 AC |
15565 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15566 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15567 | Arguments are breakpoint numbers with spaces in between.\n\ |
15568 | To delete all breakpoints, give no argument.\n\ | |
15569 | \n\ | |
15570 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15571 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15572 | &deletelist, "delete ", 1, &cmdlist); |
15573 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15574 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15575 | |
1a966eab AC |
15576 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15577 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15578 | Arguments are breakpoint numbers with spaces in between.\n\ |
15579 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15580 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15581 | &deletelist); |
15582 | ||
1bedd215 | 15583 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15584 | Clear breakpoint at specified location.\n\ |
15585 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15586 | \n\ |
15587 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15588 | is executing in.\n" |
15589 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15590 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15591 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15592 | |
1bedd215 | 15593 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15594 | Set breakpoint at specified location.\n" |
31e2b00f | 15595 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15596 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15597 | |
c906108c SS |
15598 | add_com_alias ("b", "break", class_run, 1); |
15599 | add_com_alias ("br", "break", class_run, 1); | |
15600 | add_com_alias ("bre", "break", class_run, 1); | |
15601 | add_com_alias ("brea", "break", class_run, 1); | |
15602 | ||
c906108c SS |
15603 | if (dbx_commands) |
15604 | { | |
1bedd215 AC |
15605 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15606 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15607 | &stoplist, "stop ", 1, &cmdlist); |
15608 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15609 | _("Break in function or address."), &stoplist); |
c5aa993b | 15610 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15611 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15612 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15613 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15614 | The \"Type\" column indicates one of:\n\ |
15615 | \tbreakpoint - normal breakpoint\n\ | |
15616 | \twatchpoint - watchpoint\n\ | |
15617 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15618 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15619 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15620 | address and file/line number respectively.\n\ |
15621 | \n\ | |
15622 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15623 | are set to the address of the last breakpoint listed unless the command\n\ |
15624 | is prefixed with \"server \".\n\n\ | |
c906108c | 15625 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15626 | breakpoint set.")); |
c906108c SS |
15627 | } |
15628 | ||
11db9430 | 15629 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15630 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15631 | The \"Type\" column indicates one of:\n\ |
15632 | \tbreakpoint - normal breakpoint\n\ | |
15633 | \twatchpoint - watchpoint\n\ | |
15634 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15635 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15636 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15637 | address and file/line number respectively.\n\ |
15638 | \n\ | |
15639 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15640 | are set to the address of the last breakpoint listed unless the command\n\ |
15641 | is prefixed with \"server \".\n\n\ | |
c906108c | 15642 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15643 | breakpoint set.")); |
c906108c | 15644 | |
6b04bdb7 MS |
15645 | add_info_alias ("b", "breakpoints", 1); |
15646 | ||
1a966eab AC |
15647 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15648 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15649 | The \"Type\" column indicates one of:\n\ |
15650 | \tbreakpoint - normal breakpoint\n\ | |
15651 | \twatchpoint - watchpoint\n\ | |
15652 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15653 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15654 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15655 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15656 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15657 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15658 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15659 | address and file/line number respectively.\n\ |
15660 | \n\ | |
15661 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15662 | are set to the address of the last breakpoint listed unless the command\n\ |
15663 | is prefixed with \"server \".\n\n\ | |
c906108c | 15664 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15665 | breakpoint set."), |
c906108c SS |
15666 | &maintenanceinfolist); |
15667 | ||
44feb3ce TT |
15668 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15669 | Set catchpoints to catch events."), | |
15670 | &catch_cmdlist, "catch ", | |
15671 | 0/*allow-unknown*/, &cmdlist); | |
15672 | ||
15673 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15674 | Set temporary catchpoints to catch events."), | |
15675 | &tcatch_cmdlist, "tcatch ", | |
15676 | 0/*allow-unknown*/, &cmdlist); | |
15677 | ||
44feb3ce TT |
15678 | add_catch_command ("fork", _("Catch calls to fork."), |
15679 | catch_fork_command_1, | |
a96d9b2e | 15680 | NULL, |
44feb3ce TT |
15681 | (void *) (uintptr_t) catch_fork_permanent, |
15682 | (void *) (uintptr_t) catch_fork_temporary); | |
15683 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15684 | catch_fork_command_1, | |
a96d9b2e | 15685 | NULL, |
44feb3ce TT |
15686 | (void *) (uintptr_t) catch_vfork_permanent, |
15687 | (void *) (uintptr_t) catch_vfork_temporary); | |
15688 | add_catch_command ("exec", _("Catch calls to exec."), | |
15689 | catch_exec_command_1, | |
a96d9b2e SDJ |
15690 | NULL, |
15691 | CATCH_PERMANENT, | |
15692 | CATCH_TEMPORARY); | |
edcc5120 TT |
15693 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15694 | Usage: catch load [REGEX]\n\ | |
15695 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15696 | catch_load_command_1, | |
15697 | NULL, | |
15698 | CATCH_PERMANENT, | |
15699 | CATCH_TEMPORARY); | |
15700 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15701 | Usage: catch unload [REGEX]\n\ | |
15702 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15703 | catch_unload_command_1, | |
15704 | NULL, | |
15705 | CATCH_PERMANENT, | |
15706 | CATCH_TEMPORARY); | |
c5aa993b | 15707 | |
1bedd215 AC |
15708 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15709 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15710 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15711 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15712 | an expression changes.\n\ |
15713 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15714 | the memory to which it refers.")); | |
65d12d83 | 15715 | set_cmd_completer (c, expression_completer); |
c906108c | 15716 | |
1bedd215 AC |
15717 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15718 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15719 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15720 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15721 | an expression is read.\n\ |
15722 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15723 | the memory to which it refers.")); | |
65d12d83 | 15724 | set_cmd_completer (c, expression_completer); |
c906108c | 15725 | |
1bedd215 AC |
15726 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15727 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15728 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15729 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15730 | an expression is either read or written.\n\ |
15731 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15732 | the memory to which it refers.")); | |
65d12d83 | 15733 | set_cmd_completer (c, expression_completer); |
c906108c | 15734 | |
11db9430 | 15735 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15736 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15737 | |
920d2a44 AC |
15738 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15739 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15740 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15741 | &can_use_hw_watchpoints, _("\ | |
15742 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15743 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15744 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15745 | such is available. (However, any hardware watchpoints that were\n\ | |
15746 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15747 | hardware.)"), |
15748 | NULL, | |
920d2a44 | 15749 | show_can_use_hw_watchpoints, |
85c07804 | 15750 | &setlist, &showlist); |
c906108c SS |
15751 | |
15752 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15753 | |
1042e4c0 SS |
15754 | /* Tracepoint manipulation commands. */ |
15755 | ||
15756 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15757 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15758 | \n" |
15759 | BREAK_ARGS_HELP ("trace") "\n\ | |
15760 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15761 | set_cmd_completer (c, location_completer); | |
15762 | ||
15763 | add_com_alias ("tp", "trace", class_alias, 0); | |
15764 | add_com_alias ("tr", "trace", class_alias, 1); | |
15765 | add_com_alias ("tra", "trace", class_alias, 1); | |
15766 | add_com_alias ("trac", "trace", class_alias, 1); | |
15767 | ||
7a697b8d | 15768 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15769 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15770 | \n" |
15771 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15772 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15773 | set_cmd_completer (c, location_completer); | |
15774 | ||
0fb4aa4b | 15775 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15776 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15777 | \n\ |
15778 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15779 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15780 | or -m MARKER_ID.\n\n\ | |
15781 | If a marker id is specified, probe the marker with that name. With\n\ | |
15782 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15783 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15784 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15785 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15786 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15787 | \n\ | |
15788 | CONDITION is a boolean expression.\n\ | |
629500fa | 15789 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15790 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15791 | conditions are different.\n\ | |
0fb4aa4b PA |
15792 | \n\ |
15793 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15794 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15795 | set_cmd_completer (c, location_completer); | |
15796 | ||
11db9430 | 15797 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15798 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15799 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15800 | last tracepoint set.")); | |
15801 | ||
15802 | add_info_alias ("tp", "tracepoints", 1); | |
15803 | ||
15804 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15805 | Delete specified tracepoints.\n\ | |
15806 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15807 | No argument means delete all tracepoints."), | |
15808 | &deletelist); | |
7e20dfcd | 15809 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15810 | |
15811 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15812 | Disable specified tracepoints.\n\ | |
15813 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15814 | No argument means disable all tracepoints."), | |
15815 | &disablelist); | |
15816 | deprecate_cmd (c, "disable"); | |
15817 | ||
15818 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15819 | Enable specified tracepoints.\n\ | |
15820 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15821 | No argument means enable all tracepoints."), | |
15822 | &enablelist); | |
15823 | deprecate_cmd (c, "enable"); | |
15824 | ||
15825 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15826 | Set the passcount for a tracepoint.\n\ | |
15827 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15828 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15829 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15830 | ||
6149aea9 PA |
15831 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15832 | _("Save breakpoint definitions as a script."), | |
15833 | &save_cmdlist, "save ", | |
15834 | 0/*allow-unknown*/, &cmdlist); | |
15835 | ||
15836 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15837 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15838 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15839 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15840 | session to restore them."), | |
15841 | &save_cmdlist); | |
15842 | set_cmd_completer (c, filename_completer); | |
15843 | ||
15844 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15845 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15846 | Use the 'source' command in another debug session to restore them."), |
15847 | &save_cmdlist); | |
1042e4c0 SS |
15848 | set_cmd_completer (c, filename_completer); |
15849 | ||
6149aea9 PA |
15850 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15851 | deprecate_cmd (c, "save tracepoints"); | |
15852 | ||
1bedd215 | 15853 | add_prefix_cmd ("breakpoint", class_maintenance, set_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_set_cmdlist, "set breakpoint ", |
15858 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15859 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15860 | Breakpoint specific settings\n\ |
15861 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15862 | pending breakpoint behavior"), |
fa8d40ab JJ |
15863 | &breakpoint_show_cmdlist, "show breakpoint ", |
15864 | 0/*allow-unknown*/, &showlist); | |
15865 | ||
7915a72c AC |
15866 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15867 | &pending_break_support, _("\ | |
15868 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15869 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15870 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15871 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15872 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15873 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15874 | NULL, |
920d2a44 | 15875 | show_pending_break_support, |
6e1d7d6c AC |
15876 | &breakpoint_set_cmdlist, |
15877 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15878 | |
15879 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15880 | |
15881 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15882 | &automatic_hardware_breakpoints, _("\ | |
15883 | Set automatic usage of hardware breakpoints."), _("\ | |
15884 | Show automatic usage of hardware breakpoints."), _("\ | |
15885 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15886 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15887 | a warning will be emitted for such breakpoints."), | |
15888 | NULL, | |
15889 | show_automatic_hardware_breakpoints, | |
15890 | &breakpoint_set_cmdlist, | |
15891 | &breakpoint_show_cmdlist); | |
74960c60 | 15892 | |
a25a5a45 PA |
15893 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15894 | &always_inserted_mode, _("\ | |
74960c60 VP |
15895 | Set mode for inserting breakpoints."), _("\ |
15896 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15897 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15898 | they're created, kept inserted even when execution stops, and removed\n\ | |
15899 | only when the user deletes them. When this mode is off (the default),\n\ | |
15900 | breakpoints are inserted only when execution continues, and removed\n\ | |
15901 | when execution stops."), | |
72d0e2c5 YQ |
15902 | NULL, |
15903 | &show_always_inserted_mode, | |
15904 | &breakpoint_set_cmdlist, | |
15905 | &breakpoint_show_cmdlist); | |
f1310107 | 15906 | |
b775012e LM |
15907 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15908 | condition_evaluation_enums, | |
15909 | &condition_evaluation_mode_1, _("\ | |
15910 | Set mode of breakpoint condition evaluation."), _("\ | |
15911 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15912 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15913 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15914 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15915 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15916 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15917 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15918 | be set to \"gdb\""), | |
15919 | &set_condition_evaluation_mode, | |
15920 | &show_condition_evaluation_mode, | |
15921 | &breakpoint_set_cmdlist, | |
15922 | &breakpoint_show_cmdlist); | |
15923 | ||
f1310107 TJB |
15924 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15925 | Set a breakpoint for an address range.\n\ | |
15926 | break-range START-LOCATION, END-LOCATION\n\ | |
15927 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15928 | LINENUM, for that line in the current file,\n\ | |
15929 | FILE:LINENUM, for that line in that file,\n\ | |
15930 | +OFFSET, for that number of lines after the current line\n\ | |
15931 | or the start of the range\n\ | |
15932 | FUNCTION, for the first line in that function,\n\ | |
15933 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15934 | *ADDRESS, for the instruction at that address.\n\ | |
15935 | \n\ | |
15936 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15937 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15938 | range (including START-LOCATION and END-LOCATION).")); | |
15939 | ||
e7e0cddf | 15940 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15941 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15942 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15943 | location may be a linespec, explicit, or address location.\n" |
15944 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15945 | set_cmd_completer (c, location_completer); |
15946 | ||
15947 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15948 | dprintf_style_enums, &dprintf_style, _("\ | |
15949 | Set the style of usage for dynamic printf."), _("\ | |
15950 | Show the style of usage for dynamic printf."), _("\ | |
15951 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15952 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15953 | console, as with the \"printf\" command.\n\ | |
15954 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15955 | program; by default printf(), but you can choose a different function or\n\ | |
15956 | output stream by setting dprintf-function and dprintf-channel."), | |
15957 | update_dprintf_commands, NULL, | |
15958 | &setlist, &showlist); | |
15959 | ||
15960 | dprintf_function = xstrdup ("printf"); | |
15961 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15962 | &dprintf_function, _("\ | |
15963 | Set the function to use for dynamic printf"), _("\ | |
15964 | Show the function to use for dynamic printf"), NULL, | |
15965 | update_dprintf_commands, NULL, | |
15966 | &setlist, &showlist); | |
15967 | ||
15968 | dprintf_channel = xstrdup (""); | |
15969 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15970 | &dprintf_channel, _("\ | |
15971 | Set the channel to use for dynamic printf"), _("\ | |
15972 | Show the channel to use for dynamic printf"), NULL, | |
15973 | update_dprintf_commands, NULL, | |
15974 | &setlist, &showlist); | |
15975 | ||
d3ce09f5 SS |
15976 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15977 | &disconnected_dprintf, _("\ | |
15978 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15979 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15980 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15981 | even if GDB disconnects or detaches from the target."), | |
15982 | NULL, | |
15983 | NULL, | |
15984 | &setlist, &showlist); | |
15985 | ||
15986 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
15987 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
15988 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
15989 | ||
765dc015 | 15990 | automatic_hardware_breakpoints = 1; |
f3b1572e | 15991 | |
76727919 TT |
15992 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
15993 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 15994 | } |