Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
45741a9c | 35 | #include "infrun.h" |
c906108c SS |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
38 | #include "language.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
fe898f56 | 49 | #include "block.h" |
a77053c2 | 50 | #include "solib.h" |
84acb35a JJ |
51 | #include "solist.h" |
52 | #include "observer.h" | |
765dc015 | 53 | #include "memattr.h" |
f7f9143b | 54 | #include "ada-lang.h" |
d1aa2f50 | 55 | #include "top.h" |
79a45b7d | 56 | #include "valprint.h" |
4efc6507 | 57 | #include "jit.h" |
65d79d4b | 58 | #include "parser-defs.h" |
55aa24fb SDJ |
59 | #include "gdb_regex.h" |
60 | #include "probe.h" | |
e9cafbcc | 61 | #include "cli/cli-utils.h" |
be34f849 | 62 | #include "continuations.h" |
1bfeeb0f JL |
63 | #include "stack.h" |
64 | #include "skip.h" | |
b775012e | 65 | #include "ax-gdb.h" |
e2e4d78b | 66 | #include "dummy-frame.h" |
5589af0e | 67 | #include "interps.h" |
d3ce09f5 | 68 | #include "format.h" |
cfc31633 | 69 | #include "thread-fsm.h" |
5d5658a1 | 70 | #include "tid-parse.h" |
d3ce09f5 | 71 | |
1042e4c0 SS |
72 | /* readline include files */ |
73 | #include "readline/readline.h" | |
74 | #include "readline/history.h" | |
75 | ||
76 | /* readline defines this. */ | |
77 | #undef savestring | |
78 | ||
034dad6f | 79 | #include "mi/mi-common.h" |
6dddc817 | 80 | #include "extension.h" |
325fac50 | 81 | #include <algorithm> |
5ed8105e | 82 | #include "progspace-and-thread.h" |
6c5b2ebe | 83 | #include "common/array-view.h" |
76f9c9cf | 84 | #include "common/gdb_optional.h" |
104c1213 | 85 | |
e7e8980f YQ |
86 | /* Enums for exception-handling support. */ |
87 | enum exception_event_kind | |
88 | { | |
89 | EX_EVENT_THROW, | |
591f19e8 | 90 | EX_EVENT_RETHROW, |
e7e8980f YQ |
91 | EX_EVENT_CATCH |
92 | }; | |
93 | ||
4a64f543 | 94 | /* Prototypes for local functions. */ |
c906108c | 95 | |
896b6bda | 96 | static void map_breakpoint_numbers (const char *, |
48649e1b | 97 | gdb::function_view<void (breakpoint *)>); |
c906108c | 98 | |
a14ed312 | 99 | static void ignore_command (char *, int); |
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 | |
a14ed312 | 122 | static void clear_command (char *, int); |
c906108c | 123 | |
a9634178 | 124 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 125 | |
a14ed312 | 126 | static void mention (struct breakpoint *); |
c906108c | 127 | |
348d480f PA |
128 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
129 | enum bptype, | |
c0a91b2b | 130 | const struct breakpoint_ops *); |
3742cc8b YQ |
131 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
132 | const struct symtab_and_line *); | |
133 | ||
4a64f543 MS |
134 | /* This function is used in gdbtk sources and thus can not be made |
135 | static. */ | |
63c252f8 | 136 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 137 | struct symtab_and_line, |
c0a91b2b TT |
138 | enum bptype, |
139 | const struct breakpoint_ops *); | |
c906108c | 140 | |
06edf0c0 PA |
141 | static struct breakpoint * |
142 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
143 | enum bptype type, | |
a1aa2221 LM |
144 | const struct breakpoint_ops *ops, |
145 | int loc_enabled); | |
06edf0c0 | 146 | |
76897487 KB |
147 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
148 | ||
a6d9a66e UW |
149 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
150 | CORE_ADDR bpaddr, | |
88f7da05 | 151 | enum bptype bptype); |
76897487 | 152 | |
6c95b8df PA |
153 | static void describe_other_breakpoints (struct gdbarch *, |
154 | struct program_space *, CORE_ADDR, | |
5af949e3 | 155 | struct obj_section *, int); |
c906108c | 156 | |
85d721b8 PA |
157 | static int watchpoint_locations_match (struct bp_location *loc1, |
158 | struct bp_location *loc2); | |
159 | ||
f1310107 | 160 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 161 | const struct address_space *aspace, |
f1310107 TJB |
162 | CORE_ADDR addr); |
163 | ||
d35ae833 | 164 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 165 | const address_space *, |
d35ae833 PA |
166 | CORE_ADDR, int); |
167 | ||
11db9430 | 168 | static void info_breakpoints_command (char *, int); |
c906108c | 169 | |
11db9430 | 170 | static void info_watchpoints_command (char *, int); |
d77f58be | 171 | |
a14ed312 | 172 | static void commands_command (char *, int); |
c906108c | 173 | |
a14ed312 | 174 | static void condition_command (char *, int); |
c906108c | 175 | |
834c0d03 | 176 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 177 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 178 | |
e514a9d6 | 179 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 180 | |
a14ed312 | 181 | static int hw_breakpoint_used_count (void); |
c906108c | 182 | |
a1398e0c PA |
183 | static int hw_watchpoint_use_count (struct breakpoint *); |
184 | ||
185 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
186 | enum bptype type, | |
187 | int *other_type_used); | |
c906108c | 188 | |
a14ed312 | 189 | static void hbreak_command (char *, int); |
c906108c | 190 | |
a14ed312 | 191 | static void thbreak_command (char *, int); |
c906108c | 192 | |
816338b5 SS |
193 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
194 | int count); | |
c906108c | 195 | |
a14ed312 | 196 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 197 | |
fe3f5fa8 | 198 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
199 | static void incref_bp_location (struct bp_location *loc); |
200 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 201 | |
39d61571 | 202 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 203 | |
44702360 PA |
204 | /* update_global_location_list's modes of operation wrt to whether to |
205 | insert locations now. */ | |
206 | enum ugll_insert_mode | |
207 | { | |
208 | /* Don't insert any breakpoint locations into the inferior, only | |
209 | remove already-inserted locations that no longer should be | |
210 | inserted. Functions that delete a breakpoint or breakpoints | |
211 | should specify this mode, so that deleting a breakpoint doesn't | |
212 | have the side effect of inserting the locations of other | |
213 | breakpoints that are marked not-inserted, but should_be_inserted | |
214 | returns true on them. | |
215 | ||
216 | This behavior is useful is situations close to tear-down -- e.g., | |
217 | after an exec, while the target still has execution, but | |
218 | breakpoint shadows of the previous executable image should *NOT* | |
219 | be restored to the new image; or before detaching, where the | |
220 | target still has execution and wants to delete breakpoints from | |
221 | GDB's lists, and all breakpoints had already been removed from | |
222 | the inferior. */ | |
223 | UGLL_DONT_INSERT, | |
224 | ||
a25a5a45 PA |
225 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
226 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
227 | UGLL_MAY_INSERT, |
228 | ||
a25a5a45 PA |
229 | /* Insert locations now, irrespective of |
230 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
231 | stopped right now, and the user did "continue". We need to | |
232 | insert breakpoints _before_ resuming the target, but | |
233 | UGLL_MAY_INSERT wouldn't insert them, because | |
234 | breakpoints_should_be_inserted_now returns false at that point, | |
235 | as no thread is running yet. */ | |
04086b45 | 236 | UGLL_INSERT |
44702360 PA |
237 | }; |
238 | ||
239 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 240 | |
44702360 | 241 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 242 | |
d77f58be | 243 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
244 | |
245 | static void insert_breakpoint_locations (void); | |
a5606eee | 246 | |
11db9430 | 247 | static void info_tracepoints_command (char *, int); |
1042e4c0 | 248 | |
1042e4c0 SS |
249 | static void enable_trace_command (char *, int); |
250 | ||
251 | static void disable_trace_command (char *, int); | |
252 | ||
253 | static void trace_pass_command (char *, int); | |
254 | ||
558a9d82 YQ |
255 | static void set_tracepoint_count (int num); |
256 | ||
9c06b0b4 TJB |
257 | static int is_masked_watchpoint (const struct breakpoint *b); |
258 | ||
b775012e LM |
259 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
260 | ||
983af33b SDJ |
261 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
262 | otherwise. */ | |
263 | ||
264 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 265 | |
2060206e PA |
266 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
267 | that are implemented on top of software or hardware breakpoints | |
268 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
269 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
270 | ||
271 | /* Internal breakpoints class type. */ | |
06edf0c0 | 272 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
273 | |
274 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
275 | static struct breakpoint_ops momentary_breakpoint_ops; |
276 | ||
2060206e PA |
277 | /* The breakpoint_ops structure to be used in regular user created |
278 | breakpoints. */ | |
279 | struct breakpoint_ops bkpt_breakpoint_ops; | |
280 | ||
55aa24fb SDJ |
281 | /* Breakpoints set on probes. */ |
282 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
283 | ||
e7e0cddf | 284 | /* Dynamic printf class type. */ |
c5867ab6 | 285 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 286 | |
d3ce09f5 SS |
287 | /* The style in which to perform a dynamic printf. This is a user |
288 | option because different output options have different tradeoffs; | |
289 | if GDB does the printing, there is better error handling if there | |
290 | is a problem with any of the arguments, but using an inferior | |
291 | function lets you have special-purpose printers and sending of | |
292 | output to the same place as compiled-in print functions. */ | |
293 | ||
294 | static const char dprintf_style_gdb[] = "gdb"; | |
295 | static const char dprintf_style_call[] = "call"; | |
296 | static const char dprintf_style_agent[] = "agent"; | |
297 | static const char *const dprintf_style_enums[] = { | |
298 | dprintf_style_gdb, | |
299 | dprintf_style_call, | |
300 | dprintf_style_agent, | |
301 | NULL | |
302 | }; | |
303 | static const char *dprintf_style = dprintf_style_gdb; | |
304 | ||
305 | /* The function to use for dynamic printf if the preferred style is to | |
306 | call into the inferior. The value is simply a string that is | |
307 | copied into the command, so it can be anything that GDB can | |
308 | evaluate to a callable address, not necessarily a function name. */ | |
309 | ||
bde6261a | 310 | static char *dprintf_function; |
d3ce09f5 SS |
311 | |
312 | /* The channel to use for dynamic printf if the preferred style is to | |
313 | call into the inferior; if a nonempty string, it will be passed to | |
314 | the call as the first argument, with the format string as the | |
315 | second. As with the dprintf function, this can be anything that | |
316 | GDB knows how to evaluate, so in addition to common choices like | |
317 | "stderr", this could be an app-specific expression like | |
318 | "mystreams[curlogger]". */ | |
319 | ||
bde6261a | 320 | static char *dprintf_channel; |
d3ce09f5 SS |
321 | |
322 | /* True if dprintf commands should continue to operate even if GDB | |
323 | has disconnected. */ | |
324 | static int disconnected_dprintf = 1; | |
325 | ||
5cea2a26 PA |
326 | struct command_line * |
327 | breakpoint_commands (struct breakpoint *b) | |
328 | { | |
d1b0a7bf | 329 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 330 | } |
3daf8fe5 | 331 | |
f3b1572e PA |
332 | /* Flag indicating that a command has proceeded the inferior past the |
333 | current breakpoint. */ | |
334 | ||
335 | static int breakpoint_proceeded; | |
336 | ||
956a9fb9 | 337 | const char * |
2cec12e5 AR |
338 | bpdisp_text (enum bpdisp disp) |
339 | { | |
4a64f543 MS |
340 | /* NOTE: the following values are a part of MI protocol and |
341 | represent values of 'disp' field returned when inferior stops at | |
342 | a breakpoint. */ | |
bc043ef3 | 343 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 344 | |
2cec12e5 AR |
345 | return bpdisps[(int) disp]; |
346 | } | |
c906108c | 347 | |
4a64f543 | 348 | /* Prototypes for exported functions. */ |
c906108c | 349 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 350 | if such is available. */ |
c906108c SS |
351 | static int can_use_hw_watchpoints; |
352 | ||
920d2a44 AC |
353 | static void |
354 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
355 | struct cmd_list_element *c, | |
356 | const char *value) | |
357 | { | |
3e43a32a MS |
358 | fprintf_filtered (file, |
359 | _("Debugger's willingness to use " | |
360 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
361 | value); |
362 | } | |
363 | ||
fa8d40ab JJ |
364 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
365 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 366 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
367 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
368 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
369 | static void |
370 | show_pending_break_support (struct ui_file *file, int from_tty, | |
371 | struct cmd_list_element *c, | |
372 | const char *value) | |
373 | { | |
3e43a32a MS |
374 | fprintf_filtered (file, |
375 | _("Debugger's behavior regarding " | |
376 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
377 | value); |
378 | } | |
fa8d40ab | 379 | |
765dc015 | 380 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 381 | set with "break" but falling in read-only memory. |
765dc015 VP |
382 | If 0, gdb will warn about such breakpoints, but won't automatically |
383 | use hardware breakpoints. */ | |
384 | static int automatic_hardware_breakpoints; | |
385 | static void | |
386 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
387 | struct cmd_list_element *c, | |
388 | const char *value) | |
389 | { | |
3e43a32a MS |
390 | fprintf_filtered (file, |
391 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
392 | value); |
393 | } | |
394 | ||
a25a5a45 PA |
395 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
396 | stopped, and immediately inserts any new breakpoints as soon as | |
397 | they're created. If off (default), GDB keeps breakpoints off of | |
398 | the target as long as possible. That is, it delays inserting | |
399 | breakpoints until the next resume, and removes them again when the | |
400 | target fully stops. This is a bit safer in case GDB crashes while | |
401 | processing user input. */ | |
402 | static int always_inserted_mode = 0; | |
72d0e2c5 | 403 | |
33e5cbd6 | 404 | static void |
74960c60 | 405 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 406 | struct cmd_list_element *c, const char *value) |
74960c60 | 407 | { |
a25a5a45 PA |
408 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
409 | value); | |
74960c60 VP |
410 | } |
411 | ||
b57bacec PA |
412 | /* See breakpoint.h. */ |
413 | ||
33e5cbd6 | 414 | int |
a25a5a45 | 415 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 416 | { |
a25a5a45 PA |
417 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
418 | { | |
419 | /* If breakpoints are global, they should be inserted even if no | |
420 | thread under gdb's control is running, or even if there are | |
421 | no threads under GDB's control yet. */ | |
422 | return 1; | |
423 | } | |
424 | else if (target_has_execution) | |
425 | { | |
372316f1 PA |
426 | struct thread_info *tp; |
427 | ||
a25a5a45 PA |
428 | if (always_inserted_mode) |
429 | { | |
430 | /* The user wants breakpoints inserted even if all threads | |
431 | are stopped. */ | |
432 | return 1; | |
433 | } | |
434 | ||
b57bacec PA |
435 | if (threads_are_executing ()) |
436 | return 1; | |
372316f1 PA |
437 | |
438 | /* Don't remove breakpoints yet if, even though all threads are | |
439 | stopped, we still have events to process. */ | |
440 | ALL_NON_EXITED_THREADS (tp) | |
441 | if (tp->resumed | |
442 | && tp->suspend.waitstatus_pending_p) | |
443 | return 1; | |
a25a5a45 PA |
444 | } |
445 | return 0; | |
33e5cbd6 | 446 | } |
765dc015 | 447 | |
b775012e LM |
448 | static const char condition_evaluation_both[] = "host or target"; |
449 | ||
450 | /* Modes for breakpoint condition evaluation. */ | |
451 | static const char condition_evaluation_auto[] = "auto"; | |
452 | static const char condition_evaluation_host[] = "host"; | |
453 | static const char condition_evaluation_target[] = "target"; | |
454 | static const char *const condition_evaluation_enums[] = { | |
455 | condition_evaluation_auto, | |
456 | condition_evaluation_host, | |
457 | condition_evaluation_target, | |
458 | NULL | |
459 | }; | |
460 | ||
461 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
462 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
463 | ||
464 | /* Global that we use to display information to the user (gets its value from | |
465 | condition_evaluation_mode_1. */ | |
466 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
467 | ||
468 | /* Translate a condition evaluation mode MODE into either "host" | |
469 | or "target". This is used mostly to translate from "auto" to the | |
470 | real setting that is being used. It returns the translated | |
471 | evaluation mode. */ | |
472 | ||
473 | static const char * | |
474 | translate_condition_evaluation_mode (const char *mode) | |
475 | { | |
476 | if (mode == condition_evaluation_auto) | |
477 | { | |
478 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
479 | return condition_evaluation_target; | |
480 | else | |
481 | return condition_evaluation_host; | |
482 | } | |
483 | else | |
484 | return mode; | |
485 | } | |
486 | ||
487 | /* Discovers what condition_evaluation_auto translates to. */ | |
488 | ||
489 | static const char * | |
490 | breakpoint_condition_evaluation_mode (void) | |
491 | { | |
492 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
493 | } | |
494 | ||
495 | /* Return true if GDB should evaluate breakpoint conditions or false | |
496 | otherwise. */ | |
497 | ||
498 | static int | |
499 | gdb_evaluates_breakpoint_condition_p (void) | |
500 | { | |
501 | const char *mode = breakpoint_condition_evaluation_mode (); | |
502 | ||
503 | return (mode == condition_evaluation_host); | |
504 | } | |
505 | ||
c906108c SS |
506 | /* Are we executing breakpoint commands? */ |
507 | static int executing_breakpoint_commands; | |
508 | ||
c02f5703 MS |
509 | /* Are overlay event breakpoints enabled? */ |
510 | static int overlay_events_enabled; | |
511 | ||
e09342b5 TJB |
512 | /* See description in breakpoint.h. */ |
513 | int target_exact_watchpoints = 0; | |
514 | ||
c906108c | 515 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 516 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 517 | current breakpoint. */ |
c906108c | 518 | |
5c44784c | 519 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 520 | |
5c44784c JM |
521 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
522 | for (B = breakpoint_chain; \ | |
523 | B ? (TMP=B->next, 1): 0; \ | |
524 | B = TMP) | |
c906108c | 525 | |
4a64f543 MS |
526 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
527 | not provided so update_global_location_list must not be called | |
528 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 529 | |
876fa593 | 530 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
531 | for (BP_TMP = bp_locations; \ |
532 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 533 | BP_TMP++) |
7cc221ef | 534 | |
b775012e LM |
535 | /* Iterates through locations with address ADDRESS for the currently selected |
536 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
537 | to where the loop should start from. | |
538 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
539 | appropriate location to start with. */ | |
540 | ||
541 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
542 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
543 | BP_LOCP_TMP = BP_LOCP_START; \ | |
544 | BP_LOCP_START \ | |
f5336ca5 | 545 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
546 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
547 | BP_LOCP_TMP++) | |
548 | ||
1042e4c0 SS |
549 | /* Iterator for tracepoints only. */ |
550 | ||
551 | #define ALL_TRACEPOINTS(B) \ | |
552 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 553 | if (is_tracepoint (B)) |
1042e4c0 | 554 | |
7cc221ef | 555 | /* Chains of all breakpoints defined. */ |
c906108c SS |
556 | |
557 | struct breakpoint *breakpoint_chain; | |
558 | ||
f5336ca5 | 559 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 560 | |
f5336ca5 | 561 | static struct bp_location **bp_locations; |
876fa593 | 562 | |
f5336ca5 | 563 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 564 | |
f5336ca5 | 565 | static unsigned bp_locations_count; |
876fa593 | 566 | |
4a64f543 | 567 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 568 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 569 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 570 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 571 | an address you need to read. */ |
876fa593 | 572 | |
f5336ca5 | 573 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 574 | |
4a64f543 MS |
575 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
576 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
577 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
578 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 579 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 580 | |
f5336ca5 | 581 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 582 | |
4a64f543 | 583 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
584 | from the bp_locations array, but for which a hit may still be |
585 | reported by a target. */ | |
20874c92 VP |
586 | VEC(bp_location_p) *moribund_locations = NULL; |
587 | ||
c906108c SS |
588 | /* Number of last breakpoint made. */ |
589 | ||
95a42b64 TT |
590 | static int breakpoint_count; |
591 | ||
86b17b60 PA |
592 | /* The value of `breakpoint_count' before the last command that |
593 | created breakpoints. If the last (break-like) command created more | |
594 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
595 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
596 | static int prev_breakpoint_count; | |
c906108c | 597 | |
1042e4c0 SS |
598 | /* Number of last tracepoint made. */ |
599 | ||
95a42b64 | 600 | static int tracepoint_count; |
1042e4c0 | 601 | |
6149aea9 PA |
602 | static struct cmd_list_element *breakpoint_set_cmdlist; |
603 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 604 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 605 | |
badd37ce SDJ |
606 | /* See declaration at breakpoint.h. */ |
607 | ||
608 | struct breakpoint * | |
609 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
610 | void *user_data) | |
611 | { | |
612 | struct breakpoint *b = NULL; | |
613 | ||
614 | ALL_BREAKPOINTS (b) | |
615 | { | |
616 | if (func (b, user_data) != 0) | |
617 | break; | |
618 | } | |
619 | ||
620 | return b; | |
621 | } | |
622 | ||
468d015d JJ |
623 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
624 | static int | |
625 | breakpoint_enabled (struct breakpoint *b) | |
626 | { | |
0d381245 | 627 | return (b->enable_state == bp_enabled); |
468d015d JJ |
628 | } |
629 | ||
c906108c SS |
630 | /* Set breakpoint count to NUM. */ |
631 | ||
95a42b64 | 632 | static void |
fba45db2 | 633 | set_breakpoint_count (int num) |
c906108c | 634 | { |
86b17b60 | 635 | prev_breakpoint_count = breakpoint_count; |
c906108c | 636 | breakpoint_count = num; |
4fa62494 | 637 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
638 | } |
639 | ||
86b17b60 PA |
640 | /* Used by `start_rbreak_breakpoints' below, to record the current |
641 | breakpoint count before "rbreak" creates any breakpoint. */ | |
642 | static int rbreak_start_breakpoint_count; | |
643 | ||
95a42b64 TT |
644 | /* Called at the start an "rbreak" command to record the first |
645 | breakpoint made. */ | |
86b17b60 | 646 | |
95a42b64 TT |
647 | void |
648 | start_rbreak_breakpoints (void) | |
649 | { | |
86b17b60 | 650 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
651 | } |
652 | ||
653 | /* Called at the end of an "rbreak" command to record the last | |
654 | breakpoint made. */ | |
86b17b60 | 655 | |
95a42b64 TT |
656 | void |
657 | end_rbreak_breakpoints (void) | |
658 | { | |
86b17b60 | 659 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
660 | } |
661 | ||
4a64f543 | 662 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
663 | |
664 | void | |
fba45db2 | 665 | clear_breakpoint_hit_counts (void) |
c906108c SS |
666 | { |
667 | struct breakpoint *b; | |
668 | ||
669 | ALL_BREAKPOINTS (b) | |
670 | b->hit_count = 0; | |
671 | } | |
672 | ||
c906108c | 673 | \f |
48cb2d85 VP |
674 | /* Return the breakpoint with the specified number, or NULL |
675 | if the number does not refer to an existing breakpoint. */ | |
676 | ||
677 | struct breakpoint * | |
678 | get_breakpoint (int num) | |
679 | { | |
680 | struct breakpoint *b; | |
681 | ||
682 | ALL_BREAKPOINTS (b) | |
683 | if (b->number == num) | |
684 | return b; | |
685 | ||
686 | return NULL; | |
687 | } | |
5c44784c | 688 | |
c906108c | 689 | \f |
adc36818 | 690 | |
b775012e LM |
691 | /* Mark locations as "conditions have changed" in case the target supports |
692 | evaluating conditions on its side. */ | |
693 | ||
694 | static void | |
695 | mark_breakpoint_modified (struct breakpoint *b) | |
696 | { | |
697 | struct bp_location *loc; | |
698 | ||
699 | /* This is only meaningful if the target is | |
700 | evaluating conditions and if the user has | |
701 | opted for condition evaluation on the target's | |
702 | side. */ | |
703 | if (gdb_evaluates_breakpoint_condition_p () | |
704 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
705 | return; | |
706 | ||
707 | if (!is_breakpoint (b)) | |
708 | return; | |
709 | ||
710 | for (loc = b->loc; loc; loc = loc->next) | |
711 | loc->condition_changed = condition_modified; | |
712 | } | |
713 | ||
714 | /* Mark location as "conditions have changed" in case the target supports | |
715 | evaluating conditions on its side. */ | |
716 | ||
717 | static void | |
718 | mark_breakpoint_location_modified (struct bp_location *loc) | |
719 | { | |
720 | /* This is only meaningful if the target is | |
721 | evaluating conditions and if the user has | |
722 | opted for condition evaluation on the target's | |
723 | side. */ | |
724 | if (gdb_evaluates_breakpoint_condition_p () | |
725 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
726 | ||
727 | return; | |
728 | ||
729 | if (!is_breakpoint (loc->owner)) | |
730 | return; | |
731 | ||
732 | loc->condition_changed = condition_modified; | |
733 | } | |
734 | ||
735 | /* Sets the condition-evaluation mode using the static global | |
736 | condition_evaluation_mode. */ | |
737 | ||
738 | static void | |
739 | set_condition_evaluation_mode (char *args, int from_tty, | |
740 | struct cmd_list_element *c) | |
741 | { | |
b775012e LM |
742 | const char *old_mode, *new_mode; |
743 | ||
744 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
745 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
746 | { | |
747 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
748 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
749 | "Using host evaluation mode instead.")); | |
750 | return; | |
751 | } | |
752 | ||
753 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
754 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
755 | ||
abf1152a JK |
756 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
757 | settings was "auto". */ | |
758 | condition_evaluation_mode = condition_evaluation_mode_1; | |
759 | ||
b775012e LM |
760 | /* Only update the mode if the user picked a different one. */ |
761 | if (new_mode != old_mode) | |
762 | { | |
763 | struct bp_location *loc, **loc_tmp; | |
764 | /* If the user switched to a different evaluation mode, we | |
765 | need to synch the changes with the target as follows: | |
766 | ||
767 | "host" -> "target": Send all (valid) conditions to the target. | |
768 | "target" -> "host": Remove all the conditions from the target. | |
769 | */ | |
770 | ||
b775012e LM |
771 | if (new_mode == condition_evaluation_target) |
772 | { | |
773 | /* Mark everything modified and synch conditions with the | |
774 | target. */ | |
775 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
776 | mark_breakpoint_location_modified (loc); | |
777 | } | |
778 | else | |
779 | { | |
780 | /* Manually mark non-duplicate locations to synch conditions | |
781 | with the target. We do this to remove all the conditions the | |
782 | target knows about. */ | |
783 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
784 | if (is_breakpoint (loc->owner) && loc->inserted) | |
785 | loc->needs_update = 1; | |
786 | } | |
787 | ||
788 | /* Do the update. */ | |
44702360 | 789 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
790 | } |
791 | ||
792 | return; | |
793 | } | |
794 | ||
795 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
796 | what "auto" is translating to. */ | |
797 | ||
798 | static void | |
799 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
800 | struct cmd_list_element *c, const char *value) | |
801 | { | |
802 | if (condition_evaluation_mode == condition_evaluation_auto) | |
803 | fprintf_filtered (file, | |
804 | _("Breakpoint condition evaluation " | |
805 | "mode is %s (currently %s).\n"), | |
806 | value, | |
807 | breakpoint_condition_evaluation_mode ()); | |
808 | else | |
809 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
810 | value); | |
811 | } | |
812 | ||
813 | /* A comparison function for bp_location AP and BP that is used by | |
814 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 815 | the more general bp_locations_compare function. */ |
b775012e LM |
816 | |
817 | static int | |
f5336ca5 | 818 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 819 | { |
9a3c8263 SM |
820 | const struct bp_location *a = *(const struct bp_location **) ap; |
821 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
822 | |
823 | if (a->address == b->address) | |
824 | return 0; | |
825 | else | |
826 | return ((a->address > b->address) - (a->address < b->address)); | |
827 | } | |
828 | ||
829 | /* Helper function to skip all bp_locations with addresses | |
830 | less than ADDRESS. It returns the first bp_location that | |
831 | is greater than or equal to ADDRESS. If none is found, just | |
832 | return NULL. */ | |
833 | ||
834 | static struct bp_location ** | |
835 | get_first_locp_gte_addr (CORE_ADDR address) | |
836 | { | |
837 | struct bp_location dummy_loc; | |
838 | struct bp_location *dummy_locp = &dummy_loc; | |
839 | struct bp_location **locp_found = NULL; | |
840 | ||
841 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
842 | dummy_loc.address = address; |
843 | ||
844 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 845 | locp_found = ((struct bp_location **) |
f5336ca5 | 846 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 847 | sizeof (struct bp_location **), |
f5336ca5 | 848 | bp_locations_compare_addrs)); |
b775012e LM |
849 | |
850 | /* Nothing was found, nothing left to do. */ | |
851 | if (locp_found == NULL) | |
852 | return NULL; | |
853 | ||
854 | /* We may have found a location that is at ADDRESS but is not the first in the | |
855 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 856 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
857 | && (*(locp_found - 1))->address == address) |
858 | locp_found--; | |
859 | ||
860 | return locp_found; | |
861 | } | |
862 | ||
adc36818 | 863 | void |
7a26bd4d | 864 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
865 | int from_tty) |
866 | { | |
3a5c3e22 PA |
867 | xfree (b->cond_string); |
868 | b->cond_string = NULL; | |
adc36818 | 869 | |
3a5c3e22 | 870 | if (is_watchpoint (b)) |
adc36818 | 871 | { |
3a5c3e22 PA |
872 | struct watchpoint *w = (struct watchpoint *) b; |
873 | ||
4d01a485 | 874 | w->cond_exp.reset (); |
3a5c3e22 PA |
875 | } |
876 | else | |
877 | { | |
878 | struct bp_location *loc; | |
879 | ||
880 | for (loc = b->loc; loc; loc = loc->next) | |
881 | { | |
4d01a485 | 882 | loc->cond.reset (); |
b775012e LM |
883 | |
884 | /* No need to free the condition agent expression | |
885 | bytecode (if we have one). We will handle this | |
886 | when we go through update_global_location_list. */ | |
3a5c3e22 | 887 | } |
adc36818 | 888 | } |
adc36818 PM |
889 | |
890 | if (*exp == 0) | |
891 | { | |
892 | if (from_tty) | |
893 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
894 | } | |
895 | else | |
896 | { | |
bbc13ae3 | 897 | const char *arg = exp; |
cc59ec59 | 898 | |
adc36818 PM |
899 | /* I don't know if it matters whether this is the string the user |
900 | typed in or the decompiled expression. */ | |
901 | b->cond_string = xstrdup (arg); | |
902 | b->condition_not_parsed = 0; | |
903 | ||
904 | if (is_watchpoint (b)) | |
905 | { | |
3a5c3e22 PA |
906 | struct watchpoint *w = (struct watchpoint *) b; |
907 | ||
adc36818 PM |
908 | innermost_block = NULL; |
909 | arg = exp; | |
1bb9788d | 910 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
911 | if (*arg) |
912 | error (_("Junk at end of expression")); | |
3a5c3e22 | 913 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
914 | } |
915 | else | |
916 | { | |
3a5c3e22 PA |
917 | struct bp_location *loc; |
918 | ||
adc36818 PM |
919 | for (loc = b->loc; loc; loc = loc->next) |
920 | { | |
921 | arg = exp; | |
922 | loc->cond = | |
1bb9788d TT |
923 | parse_exp_1 (&arg, loc->address, |
924 | block_for_pc (loc->address), 0); | |
adc36818 PM |
925 | if (*arg) |
926 | error (_("Junk at end of expression")); | |
927 | } | |
928 | } | |
929 | } | |
b775012e LM |
930 | mark_breakpoint_modified (b); |
931 | ||
8d3788bd | 932 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
933 | } |
934 | ||
d55637df TT |
935 | /* Completion for the "condition" command. */ |
936 | ||
eb3ff9a5 | 937 | static void |
6f937416 | 938 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 939 | completion_tracker &tracker, |
6f937416 | 940 | const char *text, const char *word) |
d55637df | 941 | { |
6f937416 | 942 | const char *space; |
d55637df | 943 | |
f1735a53 TT |
944 | text = skip_spaces (text); |
945 | space = skip_to_space (text); | |
d55637df TT |
946 | if (*space == '\0') |
947 | { | |
948 | int len; | |
949 | struct breakpoint *b; | |
950 | VEC (char_ptr) *result = NULL; | |
951 | ||
952 | if (text[0] == '$') | |
953 | { | |
954 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
955 | if (!isdigit (text[1])) |
956 | complete_internalvar (tracker, &text[1]); | |
957 | return; | |
d55637df TT |
958 | } |
959 | ||
960 | /* We're completing the breakpoint number. */ | |
961 | len = strlen (text); | |
962 | ||
963 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
964 | { |
965 | char number[50]; | |
966 | ||
967 | xsnprintf (number, sizeof (number), "%d", b->number); | |
968 | ||
969 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
970 | { |
971 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
972 | tracker.add_completion (std::move (copy)); | |
973 | } | |
58ce7251 | 974 | } |
d55637df | 975 | |
eb3ff9a5 | 976 | return; |
d55637df TT |
977 | } |
978 | ||
979 | /* We're completing the expression part. */ | |
f1735a53 | 980 | text = skip_spaces (space); |
eb3ff9a5 | 981 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
982 | } |
983 | ||
c906108c SS |
984 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
985 | ||
986 | static void | |
fba45db2 | 987 | condition_command (char *arg, int from_tty) |
c906108c | 988 | { |
52f0bd74 | 989 | struct breakpoint *b; |
c906108c | 990 | char *p; |
52f0bd74 | 991 | int bnum; |
c906108c SS |
992 | |
993 | if (arg == 0) | |
e2e0b3e5 | 994 | error_no_arg (_("breakpoint number")); |
c906108c SS |
995 | |
996 | p = arg; | |
997 | bnum = get_number (&p); | |
5c44784c | 998 | if (bnum == 0) |
8a3fe4f8 | 999 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1000 | |
1001 | ALL_BREAKPOINTS (b) | |
1002 | if (b->number == bnum) | |
2f069f6f | 1003 | { |
6dddc817 DE |
1004 | /* Check if this breakpoint has a "stop" method implemented in an |
1005 | extension language. This method and conditions entered into GDB | |
1006 | from the CLI are mutually exclusive. */ | |
1007 | const struct extension_language_defn *extlang | |
1008 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1009 | ||
1010 | if (extlang != NULL) | |
1011 | { | |
1012 | error (_("Only one stop condition allowed. There is currently" | |
1013 | " a %s stop condition defined for this breakpoint."), | |
1014 | ext_lang_capitalized_name (extlang)); | |
1015 | } | |
2566ad2d | 1016 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1017 | |
1018 | if (is_breakpoint (b)) | |
44702360 | 1019 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1020 | |
2f069f6f JB |
1021 | return; |
1022 | } | |
c906108c | 1023 | |
8a3fe4f8 | 1024 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1025 | } |
1026 | ||
a7bdde9e VP |
1027 | /* Check that COMMAND do not contain commands that are suitable |
1028 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1029 | Throw if any such commands is found. */ |
1030 | ||
a7bdde9e VP |
1031 | static void |
1032 | check_no_tracepoint_commands (struct command_line *commands) | |
1033 | { | |
1034 | struct command_line *c; | |
cc59ec59 | 1035 | |
a7bdde9e VP |
1036 | for (c = commands; c; c = c->next) |
1037 | { | |
1038 | int i; | |
1039 | ||
1040 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1041 | error (_("The 'while-stepping' command can " |
1042 | "only be used for tracepoints")); | |
a7bdde9e VP |
1043 | |
1044 | for (i = 0; i < c->body_count; ++i) | |
1045 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1046 | ||
1047 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1048 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1049 | command directly. */ |
1050 | if (strstr (c->line, "collect ") == c->line) | |
1051 | error (_("The 'collect' command can only be used for tracepoints")); | |
1052 | ||
51661e93 VP |
1053 | if (strstr (c->line, "teval ") == c->line) |
1054 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1055 | } |
1056 | } | |
1057 | ||
c1fc2657 | 1058 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1059 | { |
c1fc2657 | 1060 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1061 | }; |
1062 | ||
d77f58be SS |
1063 | /* Encapsulate tests for different types of tracepoints. */ |
1064 | ||
3b0871f4 SM |
1065 | static bool |
1066 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1067 | { |
1068 | return (type == bp_tracepoint | |
1069 | || type == bp_fast_tracepoint | |
1070 | || type == bp_static_tracepoint); | |
1071 | } | |
1072 | ||
3b0871f4 SM |
1073 | static bool |
1074 | is_longjmp_type (bptype type) | |
1075 | { | |
1076 | return type == bp_longjmp || type == bp_exception; | |
1077 | } | |
1078 | ||
a7bdde9e | 1079 | int |
d77f58be | 1080 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1081 | { |
d9b3f62e | 1082 | return is_tracepoint_type (b->type); |
a7bdde9e | 1083 | } |
d9b3f62e | 1084 | |
a5e364af SM |
1085 | /* Factory function to create an appropriate instance of breakpoint given |
1086 | TYPE. */ | |
1087 | ||
1088 | static std::unique_ptr<breakpoint> | |
1089 | new_breakpoint_from_type (bptype type) | |
1090 | { | |
1091 | breakpoint *b; | |
1092 | ||
1093 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1094 | b = new tracepoint (); |
3b0871f4 | 1095 | else if (is_longjmp_type (type)) |
c1fc2657 | 1096 | b = new longjmp_breakpoint (); |
a5e364af SM |
1097 | else |
1098 | b = new breakpoint (); | |
1099 | ||
1100 | return std::unique_ptr<breakpoint> (b); | |
1101 | } | |
1102 | ||
e5dd4106 | 1103 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1104 | breakpoint. This function will throw an exception if a problem is |
1105 | found. */ | |
48cb2d85 | 1106 | |
95a42b64 TT |
1107 | static void |
1108 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1109 | struct command_line *commands) | |
48cb2d85 | 1110 | { |
d77f58be | 1111 | if (is_tracepoint (b)) |
a7bdde9e | 1112 | { |
c9a6ce02 | 1113 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1114 | struct command_line *c; |
1115 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1116 | |
1117 | /* Reset the while-stepping step count. The previous commands | |
1118 | might have included a while-stepping action, while the new | |
1119 | ones might not. */ | |
1120 | t->step_count = 0; | |
1121 | ||
1122 | /* We need to verify that each top-level element of commands is | |
1123 | valid for tracepoints, that there's at most one | |
1124 | while-stepping element, and that the while-stepping's body | |
1125 | has valid tracing commands excluding nested while-stepping. | |
1126 | We also need to validate the tracepoint action line in the | |
1127 | context of the tracepoint --- validate_actionline actually | |
1128 | has side effects, like setting the tracepoint's | |
1129 | while-stepping STEP_COUNT, in addition to checking if the | |
1130 | collect/teval actions parse and make sense in the | |
1131 | tracepoint's context. */ | |
a7bdde9e VP |
1132 | for (c = commands; c; c = c->next) |
1133 | { | |
a7bdde9e VP |
1134 | if (c->control_type == while_stepping_control) |
1135 | { | |
1136 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1137 | error (_("The 'while-stepping' command " |
1138 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1139 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1140 | error (_("The 'while-stepping' command " |
1141 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1142 | |
1143 | if (while_stepping) | |
3e43a32a MS |
1144 | error (_("The 'while-stepping' command " |
1145 | "can be used only once")); | |
a7bdde9e VP |
1146 | else |
1147 | while_stepping = c; | |
1148 | } | |
c9a6ce02 PA |
1149 | |
1150 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1151 | } |
1152 | if (while_stepping) | |
1153 | { | |
1154 | struct command_line *c2; | |
1155 | ||
1156 | gdb_assert (while_stepping->body_count == 1); | |
1157 | c2 = while_stepping->body_list[0]; | |
1158 | for (; c2; c2 = c2->next) | |
1159 | { | |
a7bdde9e VP |
1160 | if (c2->control_type == while_stepping_control) |
1161 | error (_("The 'while-stepping' command cannot be nested")); | |
1162 | } | |
1163 | } | |
1164 | } | |
1165 | else | |
1166 | { | |
1167 | check_no_tracepoint_commands (commands); | |
1168 | } | |
95a42b64 TT |
1169 | } |
1170 | ||
0fb4aa4b PA |
1171 | /* Return a vector of all the static tracepoints set at ADDR. The |
1172 | caller is responsible for releasing the vector. */ | |
1173 | ||
1174 | VEC(breakpoint_p) * | |
1175 | static_tracepoints_here (CORE_ADDR addr) | |
1176 | { | |
1177 | struct breakpoint *b; | |
1178 | VEC(breakpoint_p) *found = 0; | |
1179 | struct bp_location *loc; | |
1180 | ||
1181 | ALL_BREAKPOINTS (b) | |
1182 | if (b->type == bp_static_tracepoint) | |
1183 | { | |
1184 | for (loc = b->loc; loc; loc = loc->next) | |
1185 | if (loc->address == addr) | |
1186 | VEC_safe_push(breakpoint_p, found, b); | |
1187 | } | |
1188 | ||
1189 | return found; | |
1190 | } | |
1191 | ||
95a42b64 | 1192 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1193 | validate that only allowed commands are included. */ |
95a42b64 TT |
1194 | |
1195 | void | |
4a64f543 | 1196 | breakpoint_set_commands (struct breakpoint *b, |
93921405 | 1197 | command_line_up &&commands) |
95a42b64 | 1198 | { |
93921405 | 1199 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1200 | |
d1b0a7bf | 1201 | b->commands = std::move (commands); |
8d3788bd | 1202 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1203 | } |
1204 | ||
45a43567 TT |
1205 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1206 | is not the same as the "silent" that may appear in the breakpoint's | |
1207 | commands. */ | |
1208 | ||
1209 | void | |
1210 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1211 | { | |
1212 | int old_silent = b->silent; | |
1213 | ||
1214 | b->silent = silent; | |
1215 | if (old_silent != silent) | |
8d3788bd | 1216 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1217 | } |
1218 | ||
1219 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1220 | breakpoint work for any thread. */ | |
1221 | ||
1222 | void | |
1223 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1224 | { | |
1225 | int old_thread = b->thread; | |
1226 | ||
1227 | b->thread = thread; | |
1228 | if (old_thread != thread) | |
8d3788bd | 1229 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1230 | } |
1231 | ||
1232 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1233 | breakpoint work for any task. */ | |
1234 | ||
1235 | void | |
1236 | breakpoint_set_task (struct breakpoint *b, int task) | |
1237 | { | |
1238 | int old_task = b->task; | |
1239 | ||
1240 | b->task = task; | |
1241 | if (old_task != task) | |
8d3788bd | 1242 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1243 | } |
1244 | ||
95a42b64 TT |
1245 | void |
1246 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1247 | { |
9a3c8263 | 1248 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1249 | |
6f937416 | 1250 | validate_actionline (line, b); |
a7bdde9e VP |
1251 | } |
1252 | ||
95a42b64 | 1253 | static void |
896b6bda | 1254 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1255 | struct command_line *control) |
95a42b64 | 1256 | { |
d1b0a7bf | 1257 | counted_command_line cmd; |
95a42b64 | 1258 | |
896b6bda PA |
1259 | std::string new_arg; |
1260 | ||
95a42b64 TT |
1261 | if (arg == NULL || !*arg) |
1262 | { | |
86b17b60 | 1263 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1264 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1265 | breakpoint_count); | |
95a42b64 | 1266 | else if (breakpoint_count > 0) |
896b6bda | 1267 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1268 | arg = new_arg.c_str (); |
1269 | } | |
1270 | ||
1271 | map_breakpoint_numbers | |
1272 | (arg, [&] (breakpoint *b) | |
1273 | { | |
1274 | if (cmd == NULL) | |
1275 | { | |
48649e1b | 1276 | if (control != NULL) |
d1b0a7bf | 1277 | cmd = copy_command_lines (control->body_list[0]); |
48649e1b TT |
1278 | else |
1279 | { | |
81b1e71c TT |
1280 | std::string str |
1281 | = string_printf (_("Type commands for breakpoint(s) " | |
1282 | "%s, one per line."), | |
1283 | arg); | |
48649e1b | 1284 | |
81b1e71c | 1285 | cmd = read_command_lines (&str[0], |
d1b0a7bf TT |
1286 | from_tty, 1, |
1287 | (is_tracepoint (b) | |
1288 | ? check_tracepoint_command : 0), | |
1289 | b); | |
48649e1b | 1290 | } |
48649e1b TT |
1291 | } |
1292 | ||
1293 | /* If a breakpoint was on the list more than once, we don't need to | |
1294 | do anything. */ | |
1295 | if (b->commands != cmd) | |
1296 | { | |
d1b0a7bf | 1297 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b TT |
1298 | b->commands = cmd; |
1299 | observer_notify_breakpoint_modified (b); | |
1300 | } | |
1301 | }); | |
95a42b64 | 1302 | |
48649e1b | 1303 | if (cmd == NULL) |
95a42b64 | 1304 | error (_("No breakpoints specified.")); |
95a42b64 TT |
1305 | } |
1306 | ||
1307 | static void | |
1308 | commands_command (char *arg, int from_tty) | |
1309 | { | |
1310 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1311 | } |
40c03ae8 EZ |
1312 | |
1313 | /* Like commands_command, but instead of reading the commands from | |
1314 | input stream, takes them from an already parsed command structure. | |
1315 | ||
1316 | This is used by cli-script.c to DTRT with breakpoint commands | |
1317 | that are part of if and while bodies. */ | |
1318 | enum command_control_type | |
896b6bda | 1319 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1320 | { |
95a42b64 TT |
1321 | commands_command_1 (arg, 0, cmd); |
1322 | return simple_control; | |
40c03ae8 | 1323 | } |
876fa593 JK |
1324 | |
1325 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1326 | ||
1327 | static int | |
1328 | bp_location_has_shadow (struct bp_location *bl) | |
1329 | { | |
1330 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1331 | return 0; | |
1332 | if (!bl->inserted) | |
1333 | return 0; | |
1334 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1335 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1336 | return 0; |
1337 | return 1; | |
1338 | } | |
1339 | ||
9d497a19 PA |
1340 | /* Update BUF, which is LEN bytes read from the target address |
1341 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1342 | contents. | |
1343 | ||
1344 | If READBUF is not NULL, this buffer must not overlap with the of | |
1345 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1346 | failed assertion internal error will be raised. */ | |
1347 | ||
1348 | static void | |
1349 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1350 | const gdb_byte *writebuf_org, | |
1351 | ULONGEST memaddr, LONGEST len, | |
1352 | struct bp_target_info *target_info, | |
1353 | struct gdbarch *gdbarch) | |
1354 | { | |
1355 | /* Now do full processing of the found relevant range of elements. */ | |
1356 | CORE_ADDR bp_addr = 0; | |
1357 | int bp_size = 0; | |
1358 | int bptoffset = 0; | |
1359 | ||
1360 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1361 | current_program_space->aspace, 0)) | |
1362 | { | |
1363 | /* The breakpoint is inserted in a different address space. */ | |
1364 | return; | |
1365 | } | |
1366 | ||
1367 | /* Addresses and length of the part of the breakpoint that | |
1368 | we need to copy. */ | |
1369 | bp_addr = target_info->placed_address; | |
1370 | bp_size = target_info->shadow_len; | |
1371 | ||
1372 | if (bp_addr + bp_size <= memaddr) | |
1373 | { | |
1374 | /* The breakpoint is entirely before the chunk of memory we are | |
1375 | reading. */ | |
1376 | return; | |
1377 | } | |
1378 | ||
1379 | if (bp_addr >= memaddr + len) | |
1380 | { | |
1381 | /* The breakpoint is entirely after the chunk of memory we are | |
1382 | reading. */ | |
1383 | return; | |
1384 | } | |
1385 | ||
1386 | /* Offset within shadow_contents. */ | |
1387 | if (bp_addr < memaddr) | |
1388 | { | |
1389 | /* Only copy the second part of the breakpoint. */ | |
1390 | bp_size -= memaddr - bp_addr; | |
1391 | bptoffset = memaddr - bp_addr; | |
1392 | bp_addr = memaddr; | |
1393 | } | |
1394 | ||
1395 | if (bp_addr + bp_size > memaddr + len) | |
1396 | { | |
1397 | /* Only copy the first part of the breakpoint. */ | |
1398 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1399 | } | |
1400 | ||
1401 | if (readbuf != NULL) | |
1402 | { | |
1403 | /* Verify that the readbuf buffer does not overlap with the | |
1404 | shadow_contents buffer. */ | |
1405 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1406 | || readbuf >= (target_info->shadow_contents | |
1407 | + target_info->shadow_len)); | |
1408 | ||
1409 | /* Update the read buffer with this inserted breakpoint's | |
1410 | shadow. */ | |
1411 | memcpy (readbuf + bp_addr - memaddr, | |
1412 | target_info->shadow_contents + bptoffset, bp_size); | |
1413 | } | |
1414 | else | |
1415 | { | |
1416 | const unsigned char *bp; | |
0d5ed153 MR |
1417 | CORE_ADDR addr = target_info->reqstd_address; |
1418 | int placed_size; | |
9d497a19 PA |
1419 | |
1420 | /* Update the shadow with what we want to write to memory. */ | |
1421 | memcpy (target_info->shadow_contents + bptoffset, | |
1422 | writebuf_org + bp_addr - memaddr, bp_size); | |
1423 | ||
1424 | /* Determine appropriate breakpoint contents and size for this | |
1425 | address. */ | |
0d5ed153 | 1426 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1427 | |
1428 | /* Update the final write buffer with this inserted | |
1429 | breakpoint's INSN. */ | |
1430 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1431 | } | |
1432 | } | |
1433 | ||
8defab1a | 1434 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1435 | by replacing any memory breakpoints with their shadowed contents. |
1436 | ||
35c63cd8 JB |
1437 | If READBUF is not NULL, this buffer must not overlap with any of |
1438 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1439 | a failed assertion internal error will be raised. | |
1440 | ||
876fa593 | 1441 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1442 | bl->address - bp_locations_placed_address_before_address_max |
1443 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1444 | The range we were requested to resolve shadows for is: |
1445 | memaddr ... memaddr + len | |
1446 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1447 | memaddr + len <= (bl->address |
f5336ca5 | 1448 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1449 | and: |
f5336ca5 | 1450 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1451 | |
8defab1a | 1452 | void |
f0ba3972 PA |
1453 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1454 | const gdb_byte *writebuf_org, | |
1455 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1456 | { |
4a64f543 MS |
1457 | /* Left boundary, right boundary and median element of our binary |
1458 | search. */ | |
876fa593 JK |
1459 | unsigned bc_l, bc_r, bc; |
1460 | ||
4a64f543 MS |
1461 | /* Find BC_L which is a leftmost element which may affect BUF |
1462 | content. It is safe to report lower value but a failure to | |
1463 | report higher one. */ | |
876fa593 JK |
1464 | |
1465 | bc_l = 0; | |
f5336ca5 | 1466 | bc_r = bp_locations_count; |
876fa593 JK |
1467 | while (bc_l + 1 < bc_r) |
1468 | { | |
35df4500 | 1469 | struct bp_location *bl; |
876fa593 JK |
1470 | |
1471 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1472 | bl = bp_locations[bc]; |
876fa593 | 1473 | |
4a64f543 MS |
1474 | /* Check first BL->ADDRESS will not overflow due to the added |
1475 | constant. Then advance the left boundary only if we are sure | |
1476 | the BC element can in no way affect the BUF content (MEMADDR | |
1477 | to MEMADDR + LEN range). | |
876fa593 | 1478 | |
f5336ca5 | 1479 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1480 | offset so that we cannot miss a breakpoint with its shadow |
1481 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1482 | |
f5336ca5 | 1483 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1484 | >= bl->address) |
f5336ca5 | 1485 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1486 | <= memaddr)) |
876fa593 JK |
1487 | bc_l = bc; |
1488 | else | |
1489 | bc_r = bc; | |
1490 | } | |
1491 | ||
128070bb PA |
1492 | /* Due to the binary search above, we need to make sure we pick the |
1493 | first location that's at BC_L's address. E.g., if there are | |
1494 | multiple locations at the same address, BC_L may end up pointing | |
1495 | at a duplicate location, and miss the "master"/"inserted" | |
1496 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1497 | B: | |
1498 | ||
1499 | L1@A, L2@A, L3@B, ... | |
1500 | ||
1501 | BC_L could end up pointing at location L2, while the "master" | |
1502 | location could be L1. Since the `loc->inserted' flag is only set | |
1503 | on "master" locations, we'd forget to restore the shadow of L1 | |
1504 | and L2. */ | |
1505 | while (bc_l > 0 | |
f5336ca5 | 1506 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1507 | bc_l--; |
1508 | ||
876fa593 JK |
1509 | /* Now do full processing of the found relevant range of elements. */ |
1510 | ||
f5336ca5 | 1511 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1512 | { |
f5336ca5 | 1513 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1514 | |
35df4500 TJB |
1515 | /* bp_location array has BL->OWNER always non-NULL. */ |
1516 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1517 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1518 | bl->owner->number); |
ffce0d52 | 1519 | |
e5dd4106 | 1520 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1521 | content. */ |
1522 | ||
f5336ca5 PA |
1523 | if (bl->address >= bp_locations_placed_address_before_address_max |
1524 | && memaddr + len <= (bl->address | |
1525 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1526 | break; |
1527 | ||
35df4500 | 1528 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1529 | continue; |
6c95b8df | 1530 | |
9d497a19 PA |
1531 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1532 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1533 | } | |
c906108c | 1534 | } |
9d497a19 | 1535 | |
c906108c | 1536 | \f |
c5aa993b | 1537 | |
b775012e LM |
1538 | /* Return true if BPT is either a software breakpoint or a hardware |
1539 | breakpoint. */ | |
1540 | ||
1541 | int | |
1542 | is_breakpoint (const struct breakpoint *bpt) | |
1543 | { | |
1544 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1545 | || bpt->type == bp_hardware_breakpoint |
1546 | || bpt->type == bp_dprintf); | |
b775012e LM |
1547 | } |
1548 | ||
60e1c644 PA |
1549 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1550 | ||
a5606eee | 1551 | static int |
d77f58be | 1552 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1553 | { |
1554 | return (bpt->type == bp_hardware_watchpoint | |
1555 | || bpt->type == bp_read_watchpoint | |
1556 | || bpt->type == bp_access_watchpoint); | |
1557 | } | |
7270d8f2 | 1558 | |
60e1c644 PA |
1559 | /* Return true if BPT is of any watchpoint kind, hardware or |
1560 | software. */ | |
1561 | ||
3a5c3e22 | 1562 | int |
d77f58be | 1563 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1564 | { |
1565 | return (is_hardware_watchpoint (bpt) | |
1566 | || bpt->type == bp_watchpoint); | |
1567 | } | |
1568 | ||
3a5c3e22 PA |
1569 | /* Returns true if the current thread and its running state are safe |
1570 | to evaluate or update watchpoint B. Watchpoints on local | |
1571 | expressions need to be evaluated in the context of the thread that | |
1572 | was current when the watchpoint was created, and, that thread needs | |
1573 | to be stopped to be able to select the correct frame context. | |
1574 | Watchpoints on global expressions can be evaluated on any thread, | |
1575 | and in any state. It is presently left to the target allowing | |
1576 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1577 | |
1578 | static int | |
3a5c3e22 | 1579 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1580 | { |
c1fc2657 | 1581 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1582 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1583 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1584 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1585 | } |
1586 | ||
d0fb5eae JK |
1587 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1588 | associated bp_watchpoint_scope breakpoint. */ | |
1589 | ||
1590 | static void | |
3a5c3e22 | 1591 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1592 | { |
c1fc2657 | 1593 | if (w->related_breakpoint != w) |
d0fb5eae | 1594 | { |
c1fc2657 SM |
1595 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1596 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1597 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1598 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1599 | w->related_breakpoint = w; | |
d0fb5eae | 1600 | } |
c1fc2657 | 1601 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1602 | } |
1603 | ||
bb9d5f81 PP |
1604 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1605 | watchpoint W. */ | |
1606 | ||
1607 | static struct value * | |
1608 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1609 | { | |
1610 | struct value *bit_val; | |
1611 | ||
1612 | if (val == NULL) | |
1613 | return NULL; | |
1614 | ||
1615 | bit_val = allocate_value (value_type (val)); | |
1616 | ||
1617 | unpack_value_bitfield (bit_val, | |
1618 | w->val_bitpos, | |
1619 | w->val_bitsize, | |
1620 | value_contents_for_printing (val), | |
1621 | value_offset (val), | |
1622 | val); | |
1623 | ||
1624 | return bit_val; | |
1625 | } | |
1626 | ||
c6d81124 PA |
1627 | /* Allocate a dummy location and add it to B, which must be a software |
1628 | watchpoint. This is required because even if a software watchpoint | |
1629 | is not watching any memory, bpstat_stop_status requires a location | |
1630 | to be able to report stops. */ | |
1631 | ||
1632 | static void | |
1633 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1634 | struct program_space *pspace) | |
1635 | { | |
1636 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1637 | ||
1638 | b->loc = allocate_bp_location (b); | |
1639 | b->loc->pspace = pspace; | |
1640 | b->loc->address = -1; | |
1641 | b->loc->length = -1; | |
1642 | } | |
1643 | ||
1644 | /* Returns true if B is a software watchpoint that is not watching any | |
1645 | memory (e.g., "watch $pc"). */ | |
1646 | ||
1647 | static int | |
1648 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1649 | { | |
1650 | return (b->type == bp_watchpoint | |
1651 | && b->loc != NULL | |
1652 | && b->loc->next == NULL | |
1653 | && b->loc->address == -1 | |
1654 | && b->loc->length == -1); | |
1655 | } | |
1656 | ||
567e1b4e JB |
1657 | /* Assuming that B is a watchpoint: |
1658 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1659 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1660 | - Evaluate the condition if there is one, and store the result |
1661 | in b->loc->cond. | |
a5606eee VP |
1662 | - Update the list of values that must be watched in B->loc. |
1663 | ||
4a64f543 MS |
1664 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1665 | nothing. If this is local watchpoint that is out of scope, delete | |
1666 | it. | |
1667 | ||
1668 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1669 | removed + inserted on each stop here. Normal breakpoints must | |
1670 | never be removed because they might be missed by a running thread | |
1671 | when debugging in non-stop mode. On the other hand, hardware | |
1672 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1673 | to each LWP since they are stored in each LWP's hardware debug | |
1674 | registers. Therefore, such LWP must be stopped first in order to | |
1675 | be able to modify its hardware watchpoints. | |
1676 | ||
1677 | Hardware watchpoints must be reset exactly once after being | |
1678 | presented to the user. It cannot be done sooner, because it would | |
1679 | reset the data used to present the watchpoint hit to the user. And | |
1680 | it must not be done later because it could display the same single | |
1681 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1682 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1683 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1684 | not user-visible - its hit is suppressed if the memory content has | |
1685 | not changed. | |
1686 | ||
1687 | The following constraints influence the location where we can reset | |
1688 | hardware watchpoints: | |
1689 | ||
1690 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1691 | called several times when GDB stops. | |
1692 | ||
1693 | [linux] | |
1694 | * Multiple hardware watchpoints can be hit at the same time, | |
1695 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1696 | hit at a time as the reason for stopping, and all the other hits | |
1697 | are presented later, one after the other, each time the user | |
1698 | requests the execution to be resumed. Execution is not resumed | |
1699 | for the threads still having pending hit event stored in | |
1700 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1701 | the inferior on the first stop the thread hit event is kept being | |
1702 | reported from its cached value by linux_nat_stopped_data_address | |
1703 | until the real thread resume happens after the watchpoint gets | |
1704 | presented and thus its LWP_INFO->STATUS gets reset. | |
1705 | ||
1706 | Therefore the hardware watchpoint hit can get safely reset on the | |
1707 | watchpoint removal from inferior. */ | |
a79d3c27 | 1708 | |
b40ce68a | 1709 | static void |
3a5c3e22 | 1710 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1711 | { |
a5606eee | 1712 | int within_current_scope; |
a5606eee | 1713 | struct frame_id saved_frame_id; |
66076460 | 1714 | int frame_saved; |
a5606eee | 1715 | |
f6bc2008 PA |
1716 | /* If this is a local watchpoint, we only want to check if the |
1717 | watchpoint frame is in scope if the current thread is the thread | |
1718 | that was used to create the watchpoint. */ | |
1719 | if (!watchpoint_in_thread_scope (b)) | |
1720 | return; | |
1721 | ||
c1fc2657 | 1722 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1723 | return; |
1724 | ||
66076460 | 1725 | frame_saved = 0; |
a5606eee VP |
1726 | |
1727 | /* Determine if the watchpoint is within scope. */ | |
1728 | if (b->exp_valid_block == NULL) | |
1729 | within_current_scope = 1; | |
1730 | else | |
1731 | { | |
b5db5dfc UW |
1732 | struct frame_info *fi = get_current_frame (); |
1733 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1734 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1735 | ||
c9cf6e20 MG |
1736 | /* If we're at a point where the stack has been destroyed |
1737 | (e.g. in a function epilogue), unwinding may not work | |
1738 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1739 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1740 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1741 | return; |
66076460 DJ |
1742 | |
1743 | /* Save the current frame's ID so we can restore it after | |
1744 | evaluating the watchpoint expression on its own frame. */ | |
1745 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1746 | took a frame parameter, so that we didn't have to change the | |
1747 | selected frame. */ | |
1748 | frame_saved = 1; | |
1749 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1750 | ||
a5606eee VP |
1751 | fi = frame_find_by_id (b->watchpoint_frame); |
1752 | within_current_scope = (fi != NULL); | |
1753 | if (within_current_scope) | |
1754 | select_frame (fi); | |
1755 | } | |
1756 | ||
b5db5dfc UW |
1757 | /* We don't free locations. They are stored in the bp_location array |
1758 | and update_global_location_list will eventually delete them and | |
1759 | remove breakpoints if needed. */ | |
c1fc2657 | 1760 | b->loc = NULL; |
b5db5dfc | 1761 | |
a5606eee VP |
1762 | if (within_current_scope && reparse) |
1763 | { | |
bbc13ae3 | 1764 | const char *s; |
d63d0675 | 1765 | |
4d01a485 | 1766 | b->exp.reset (); |
d63d0675 | 1767 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1768 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1769 | /* If the meaning of expression itself changed, the old value is |
1770 | no longer relevant. We don't want to report a watchpoint hit | |
1771 | to the user when the old value and the new value may actually | |
1772 | be completely different objects. */ | |
1773 | value_free (b->val); | |
fa4727a6 DJ |
1774 | b->val = NULL; |
1775 | b->val_valid = 0; | |
60e1c644 PA |
1776 | |
1777 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1778 | expression is stored in the breakpoint object, not in the | |
1779 | locations (re)created below. */ | |
c1fc2657 | 1780 | if (b->cond_string != NULL) |
60e1c644 | 1781 | { |
4d01a485 | 1782 | b->cond_exp.reset (); |
60e1c644 | 1783 | |
c1fc2657 | 1784 | s = b->cond_string; |
1bb9788d | 1785 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1786 | } |
a5606eee | 1787 | } |
a5606eee VP |
1788 | |
1789 | /* If we failed to parse the expression, for example because | |
1790 | it refers to a global variable in a not-yet-loaded shared library, | |
1791 | don't try to insert watchpoint. We don't automatically delete | |
1792 | such watchpoint, though, since failure to parse expression | |
1793 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1794 | if (!target_has_execution) |
2d134ed3 PA |
1795 | { |
1796 | /* Without execution, memory can't change. No use to try and | |
1797 | set watchpoint locations. The watchpoint will be reset when | |
1798 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1799 | if (!can_use_hw_watchpoints) |
1800 | { | |
c1fc2657 SM |
1801 | if (b->ops->works_in_software_mode (b)) |
1802 | b->type = bp_watchpoint; | |
e8369a73 | 1803 | else |
638aa5a1 AB |
1804 | error (_("Can't set read/access watchpoint when " |
1805 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1806 | } |
2d134ed3 PA |
1807 | } |
1808 | else if (within_current_scope && b->exp) | |
a5606eee | 1809 | { |
0cf6dd15 | 1810 | int pc = 0; |
fa4727a6 | 1811 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1812 | struct program_space *frame_pspace; |
a5606eee | 1813 | |
4d01a485 | 1814 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1815 | |
a5606eee VP |
1816 | /* Avoid setting b->val if it's already set. The meaning of |
1817 | b->val is 'the last value' user saw, and we should update | |
1818 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1819 | happens, the code that reports it updates b->val directly. |
1820 | We don't keep track of the memory value for masked | |
1821 | watchpoints. */ | |
c1fc2657 | 1822 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1823 | { |
bb9d5f81 PP |
1824 | if (b->val_bitsize != 0) |
1825 | { | |
1826 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1827 | if (v != NULL) | |
1828 | release_value (v); | |
1829 | } | |
fa4727a6 DJ |
1830 | b->val = v; |
1831 | b->val_valid = 1; | |
1832 | } | |
a5606eee | 1833 | |
2d134ed3 PA |
1834 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1835 | ||
a5606eee | 1836 | /* Look at each value on the value chain. */ |
9fa40276 | 1837 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1838 | { |
1839 | /* If it's a memory location, and GDB actually needed | |
1840 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1841 | must watch it. If the first value returned is |
1842 | still lazy, that means an error occurred reading it; | |
1843 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1844 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1845 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1846 | { |
1847 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1848 | |
a5606eee VP |
1849 | /* We only watch structs and arrays if user asked |
1850 | for it explicitly, never if they just happen to | |
1851 | appear in the middle of some value chain. */ | |
fa4727a6 | 1852 | if (v == result |
a5606eee VP |
1853 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1854 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1855 | { | |
1856 | CORE_ADDR addr; | |
f486487f | 1857 | enum target_hw_bp_type type; |
a5606eee | 1858 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1859 | int bitpos = 0, bitsize = 0; |
1860 | ||
1861 | if (value_bitsize (v) != 0) | |
1862 | { | |
1863 | /* Extract the bit parameters out from the bitfield | |
1864 | sub-expression. */ | |
1865 | bitpos = value_bitpos (v); | |
1866 | bitsize = value_bitsize (v); | |
1867 | } | |
1868 | else if (v == result && b->val_bitsize != 0) | |
1869 | { | |
1870 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1871 | lvalue whose bit parameters are saved in the fields | |
1872 | VAL_BITPOS and VAL_BITSIZE. */ | |
1873 | bitpos = b->val_bitpos; | |
1874 | bitsize = b->val_bitsize; | |
1875 | } | |
a5606eee | 1876 | |
42ae5230 | 1877 | addr = value_address (v); |
bb9d5f81 PP |
1878 | if (bitsize != 0) |
1879 | { | |
1880 | /* Skip the bytes that don't contain the bitfield. */ | |
1881 | addr += bitpos / 8; | |
1882 | } | |
1883 | ||
a5606eee | 1884 | type = hw_write; |
c1fc2657 | 1885 | if (b->type == bp_read_watchpoint) |
a5606eee | 1886 | type = hw_read; |
c1fc2657 | 1887 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1888 | type = hw_access; |
3a5c3e22 | 1889 | |
c1fc2657 SM |
1890 | loc = allocate_bp_location (b); |
1891 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1892 | ; |
1893 | *tmp = loc; | |
a6d9a66e | 1894 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1895 | |
1896 | loc->pspace = frame_pspace; | |
a5606eee | 1897 | loc->address = addr; |
bb9d5f81 PP |
1898 | |
1899 | if (bitsize != 0) | |
1900 | { | |
1901 | /* Just cover the bytes that make up the bitfield. */ | |
1902 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1903 | } | |
1904 | else | |
1905 | loc->length = TYPE_LENGTH (value_type (v)); | |
1906 | ||
a5606eee VP |
1907 | loc->watchpoint_type = type; |
1908 | } | |
1909 | } | |
9fa40276 TJB |
1910 | } |
1911 | ||
1912 | /* Change the type of breakpoint between hardware assisted or | |
1913 | an ordinary watchpoint depending on the hardware support | |
1914 | and free hardware slots. REPARSE is set when the inferior | |
1915 | is started. */ | |
a9634178 | 1916 | if (reparse) |
9fa40276 | 1917 | { |
e09342b5 | 1918 | int reg_cnt; |
9fa40276 TJB |
1919 | enum bp_loc_type loc_type; |
1920 | struct bp_location *bl; | |
a5606eee | 1921 | |
a9634178 | 1922 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1923 | |
1924 | if (reg_cnt) | |
9fa40276 TJB |
1925 | { |
1926 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1927 | enum bptype type; |
9fa40276 | 1928 | |
a9634178 TJB |
1929 | /* Use an exact watchpoint when there's only one memory region to be |
1930 | watched, and only one debug register is needed to watch it. */ | |
1931 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1932 | ||
9fa40276 | 1933 | /* We need to determine how many resources are already |
e09342b5 TJB |
1934 | used for all other hardware watchpoints plus this one |
1935 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1936 | this watchpoint in as well. */ |
1937 | ||
1938 | /* If this is a software watchpoint, we try to turn it | |
1939 | to a hardware one -- count resources as if B was of | |
1940 | hardware watchpoint type. */ | |
c1fc2657 | 1941 | type = b->type; |
a1398e0c PA |
1942 | if (type == bp_watchpoint) |
1943 | type = bp_hardware_watchpoint; | |
1944 | ||
1945 | /* This watchpoint may or may not have been placed on | |
1946 | the list yet at this point (it won't be in the list | |
1947 | if we're trying to create it for the first time, | |
1948 | through watch_command), so always account for it | |
1949 | manually. */ | |
1950 | ||
1951 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1952 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1953 | |
1954 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1955 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1956 | |
1957 | target_resources_ok | |
1958 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1959 | if (target_resources_ok <= 0) |
a9634178 | 1960 | { |
c1fc2657 | 1961 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1962 | |
1963 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1964 | error (_("Target does not support this type of " |
1965 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1966 | else if (target_resources_ok < 0 && !sw_mode) |
1967 | error (_("There are not enough available hardware " | |
1968 | "resources for this watchpoint.")); | |
a1398e0c PA |
1969 | |
1970 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1971 | b->type = bp_watchpoint; |
a1398e0c PA |
1972 | } |
1973 | else | |
1974 | { | |
1975 | /* If this was a software watchpoint, we've just | |
1976 | found we have enough resources to turn it to a | |
1977 | hardware watchpoint. Otherwise, this is a | |
1978 | nop. */ | |
c1fc2657 | 1979 | b->type = type; |
a9634178 | 1980 | } |
9fa40276 | 1981 | } |
c1fc2657 | 1982 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1983 | { |
1984 | if (!can_use_hw_watchpoints) | |
1985 | error (_("Can't set read/access watchpoint when " | |
1986 | "hardware watchpoints are disabled.")); | |
1987 | else | |
1988 | error (_("Expression cannot be implemented with " | |
1989 | "read/access watchpoint.")); | |
1990 | } | |
9fa40276 | 1991 | else |
c1fc2657 | 1992 | b->type = bp_watchpoint; |
9fa40276 | 1993 | |
c1fc2657 | 1994 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1995 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1996 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1997 | bl->loc_type = loc_type; |
1998 | } | |
1999 | ||
2000 | for (v = val_chain; v; v = next) | |
2001 | { | |
a5606eee VP |
2002 | next = value_next (v); |
2003 | if (v != b->val) | |
2004 | value_free (v); | |
2005 | } | |
2006 | ||
c7437ca6 PA |
2007 | /* If a software watchpoint is not watching any memory, then the |
2008 | above left it without any location set up. But, | |
2009 | bpstat_stop_status requires a location to be able to report | |
2010 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2011 | if (b->type == bp_watchpoint && b->loc == NULL) |
2012 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2013 | } |
2014 | else if (!within_current_scope) | |
7270d8f2 | 2015 | { |
ac74f770 MS |
2016 | printf_filtered (_("\ |
2017 | Watchpoint %d deleted because the program has left the block\n\ | |
2018 | in which its expression is valid.\n"), | |
c1fc2657 | 2019 | b->number); |
d0fb5eae | 2020 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2021 | } |
a5606eee VP |
2022 | |
2023 | /* Restore the selected frame. */ | |
66076460 DJ |
2024 | if (frame_saved) |
2025 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2026 | } |
2027 | ||
a5606eee | 2028 | |
74960c60 | 2029 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2030 | inserted in the inferior. We don't differentiate the type of BL's owner |
2031 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2032 | breakpoint_ops is not defined, because in insert_bp_location, | |
2033 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2034 | static int |
35df4500 | 2035 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2036 | { |
35df4500 | 2037 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2038 | return 0; |
2039 | ||
35df4500 | 2040 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2041 | return 0; |
2042 | ||
35df4500 | 2043 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2044 | return 0; |
2045 | ||
f8eba3c6 TT |
2046 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2047 | return 0; | |
2048 | ||
56710373 PA |
2049 | /* This is set for example, when we're attached to the parent of a |
2050 | vfork, and have detached from the child. The child is running | |
2051 | free, and we expect it to do an exec or exit, at which point the | |
2052 | OS makes the parent schedulable again (and the target reports | |
2053 | that the vfork is done). Until the child is done with the shared | |
2054 | memory region, do not insert breakpoints in the parent, otherwise | |
2055 | the child could still trip on the parent's breakpoints. Since | |
2056 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2057 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2058 | return 0; |
2059 | ||
31e77af2 | 2060 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2061 | location, except if the breakpoint is a single-step breakpoint, |
2062 | and the breakpoint's thread is the thread which is stepping past | |
2063 | a breakpoint. */ | |
31e77af2 PA |
2064 | if ((bl->loc_type == bp_loc_software_breakpoint |
2065 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2066 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2067 | bl->address) |
2068 | /* The single-step breakpoint may be inserted at the location | |
2069 | we're trying to step if the instruction branches to itself. | |
2070 | However, the instruction won't be executed at all and it may | |
2071 | break the semantics of the instruction, for example, the | |
2072 | instruction is a conditional branch or updates some flags. | |
2073 | We can't fix it unless GDB is able to emulate the instruction | |
2074 | or switch to displaced stepping. */ | |
2075 | && !(bl->owner->type == bp_single_step | |
2076 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2077 | { |
2078 | if (debug_infrun) | |
2079 | { | |
2080 | fprintf_unfiltered (gdb_stdlog, | |
2081 | "infrun: skipping breakpoint: " | |
2082 | "stepping past insn at: %s\n", | |
2083 | paddress (bl->gdbarch, bl->address)); | |
2084 | } | |
2085 | return 0; | |
2086 | } | |
31e77af2 | 2087 | |
963f9c80 PA |
2088 | /* Don't insert watchpoints if we're trying to step past the |
2089 | instruction that triggered one. */ | |
2090 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2091 | && stepping_past_nonsteppable_watchpoint ()) | |
2092 | { | |
2093 | if (debug_infrun) | |
2094 | { | |
2095 | fprintf_unfiltered (gdb_stdlog, | |
2096 | "infrun: stepping past non-steppable watchpoint. " | |
2097 | "skipping watchpoint at %s:%d\n", | |
2098 | paddress (bl->gdbarch, bl->address), | |
2099 | bl->length); | |
2100 | } | |
2101 | return 0; | |
2102 | } | |
2103 | ||
74960c60 VP |
2104 | return 1; |
2105 | } | |
2106 | ||
934709f0 PW |
2107 | /* Same as should_be_inserted but does the check assuming |
2108 | that the location is not duplicated. */ | |
2109 | ||
2110 | static int | |
2111 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2112 | { | |
2113 | int result; | |
2114 | const int save_duplicate = bl->duplicate; | |
2115 | ||
2116 | bl->duplicate = 0; | |
2117 | result = should_be_inserted (bl); | |
2118 | bl->duplicate = save_duplicate; | |
2119 | return result; | |
2120 | } | |
2121 | ||
b775012e LM |
2122 | /* Parses a conditional described by an expression COND into an |
2123 | agent expression bytecode suitable for evaluation | |
2124 | by the bytecode interpreter. Return NULL if there was | |
2125 | any error during parsing. */ | |
2126 | ||
833177a4 | 2127 | static agent_expr_up |
b775012e LM |
2128 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2129 | { | |
833177a4 | 2130 | if (cond == NULL) |
b775012e LM |
2131 | return NULL; |
2132 | ||
833177a4 PA |
2133 | agent_expr_up aexpr; |
2134 | ||
b775012e LM |
2135 | /* We don't want to stop processing, so catch any errors |
2136 | that may show up. */ | |
492d29ea | 2137 | TRY |
b775012e | 2138 | { |
036e657b | 2139 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2140 | } |
2141 | ||
492d29ea | 2142 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2143 | { |
2144 | /* If we got here, it means the condition could not be parsed to a valid | |
2145 | bytecode expression and thus can't be evaluated on the target's side. | |
2146 | It's no use iterating through the conditions. */ | |
b775012e | 2147 | } |
492d29ea | 2148 | END_CATCH |
b775012e LM |
2149 | |
2150 | /* We have a valid agent expression. */ | |
2151 | return aexpr; | |
2152 | } | |
2153 | ||
2154 | /* Based on location BL, create a list of breakpoint conditions to be | |
2155 | passed on to the target. If we have duplicated locations with different | |
2156 | conditions, we will add such conditions to the list. The idea is that the | |
2157 | target will evaluate the list of conditions and will only notify GDB when | |
2158 | one of them is true. */ | |
2159 | ||
2160 | static void | |
2161 | build_target_condition_list (struct bp_location *bl) | |
2162 | { | |
2163 | struct bp_location **locp = NULL, **loc2p; | |
2164 | int null_condition_or_parse_error = 0; | |
2165 | int modified = bl->needs_update; | |
2166 | struct bp_location *loc; | |
2167 | ||
8b4f3082 | 2168 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2169 | bl->target_info.conditions.clear (); |
8b4f3082 | 2170 | |
b775012e LM |
2171 | /* This is only meaningful if the target is |
2172 | evaluating conditions and if the user has | |
2173 | opted for condition evaluation on the target's | |
2174 | side. */ | |
2175 | if (gdb_evaluates_breakpoint_condition_p () | |
2176 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2177 | return; | |
2178 | ||
2179 | /* Do a first pass to check for locations with no assigned | |
2180 | conditions or conditions that fail to parse to a valid agent expression | |
2181 | bytecode. If any of these happen, then it's no use to send conditions | |
2182 | to the target since this location will always trigger and generate a | |
2183 | response back to GDB. */ | |
2184 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2185 | { | |
2186 | loc = (*loc2p); | |
2187 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2188 | { | |
2189 | if (modified) | |
2190 | { | |
b775012e LM |
2191 | /* Re-parse the conditions since something changed. In that |
2192 | case we already freed the condition bytecodes (see | |
2193 | force_breakpoint_reinsertion). We just | |
2194 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2195 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2196 | loc->cond.get ()); | |
b775012e LM |
2197 | } |
2198 | ||
2199 | /* If we have a NULL bytecode expression, it means something | |
2200 | went wrong or we have a null condition expression. */ | |
2201 | if (!loc->cond_bytecode) | |
2202 | { | |
2203 | null_condition_or_parse_error = 1; | |
2204 | break; | |
2205 | } | |
2206 | } | |
2207 | } | |
2208 | ||
2209 | /* If any of these happened, it means we will have to evaluate the conditions | |
2210 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2211 | for all the other duplicate locations, thus we free all of them here. | |
2212 | ||
2213 | This is so we have a finer control over which locations' conditions are | |
2214 | being evaluated by GDB or the remote stub. */ | |
2215 | if (null_condition_or_parse_error) | |
2216 | { | |
2217 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2218 | { | |
2219 | loc = (*loc2p); | |
2220 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2221 | { | |
2222 | /* Only go as far as the first NULL bytecode is | |
2223 | located. */ | |
2224 | if (!loc->cond_bytecode) | |
2225 | return; | |
2226 | ||
833177a4 | 2227 | loc->cond_bytecode.reset (); |
b775012e LM |
2228 | } |
2229 | } | |
2230 | } | |
2231 | ||
2232 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2233 | for this location's address. */ | |
2234 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2235 | { | |
2236 | loc = (*loc2p); | |
2237 | if (loc->cond | |
2238 | && is_breakpoint (loc->owner) | |
2239 | && loc->pspace->num == bl->pspace->num | |
2240 | && loc->owner->enable_state == bp_enabled | |
2241 | && loc->enabled) | |
3cde5c42 PA |
2242 | { |
2243 | /* Add the condition to the vector. This will be used later | |
2244 | to send the conditions to the target. */ | |
2245 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2246 | } | |
b775012e LM |
2247 | } |
2248 | ||
2249 | return; | |
2250 | } | |
2251 | ||
d3ce09f5 SS |
2252 | /* Parses a command described by string CMD into an agent expression |
2253 | bytecode suitable for evaluation by the bytecode interpreter. | |
2254 | Return NULL if there was any error during parsing. */ | |
2255 | ||
833177a4 | 2256 | static agent_expr_up |
d3ce09f5 SS |
2257 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2258 | { | |
2259 | struct cleanup *old_cleanups = 0; | |
4d01a485 | 2260 | struct expression **argvec; |
bbc13ae3 KS |
2261 | const char *cmdrest; |
2262 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2263 | struct format_piece *fpieces; |
2264 | int nargs; | |
2265 | struct gdbarch *gdbarch = get_current_arch (); | |
2266 | ||
833177a4 | 2267 | if (cmd == NULL) |
d3ce09f5 SS |
2268 | return NULL; |
2269 | ||
2270 | cmdrest = cmd; | |
2271 | ||
2272 | if (*cmdrest == ',') | |
2273 | ++cmdrest; | |
f1735a53 | 2274 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2275 | |
2276 | if (*cmdrest++ != '"') | |
2277 | error (_("No format string following the location")); | |
2278 | ||
2279 | format_start = cmdrest; | |
2280 | ||
2281 | fpieces = parse_format_string (&cmdrest); | |
2282 | ||
2283 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2284 | ||
2285 | format_end = cmdrest; | |
2286 | ||
2287 | if (*cmdrest++ != '"') | |
2288 | error (_("Bad format string, non-terminated '\"'.")); | |
2289 | ||
f1735a53 | 2290 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2291 | |
2292 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2293 | error (_("Invalid argument syntax")); | |
2294 | ||
2295 | if (*cmdrest == ',') | |
2296 | cmdrest++; | |
f1735a53 | 2297 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2298 | |
2299 | /* For each argument, make an expression. */ | |
2300 | ||
2301 | argvec = (struct expression **) alloca (strlen (cmd) | |
2302 | * sizeof (struct expression *)); | |
2303 | ||
2304 | nargs = 0; | |
2305 | while (*cmdrest != '\0') | |
2306 | { | |
bbc13ae3 | 2307 | const char *cmd1; |
d3ce09f5 SS |
2308 | |
2309 | cmd1 = cmdrest; | |
4d01a485 PA |
2310 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
2311 | argvec[nargs++] = expr.release (); | |
d3ce09f5 SS |
2312 | cmdrest = cmd1; |
2313 | if (*cmdrest == ',') | |
2314 | ++cmdrest; | |
2315 | } | |
2316 | ||
833177a4 PA |
2317 | agent_expr_up aexpr; |
2318 | ||
d3ce09f5 SS |
2319 | /* We don't want to stop processing, so catch any errors |
2320 | that may show up. */ | |
492d29ea | 2321 | TRY |
d3ce09f5 | 2322 | { |
036e657b JB |
2323 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2324 | format_start, format_end - format_start, | |
2325 | fpieces, nargs, argvec); | |
d3ce09f5 | 2326 | } |
492d29ea | 2327 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2328 | { |
2329 | /* If we got here, it means the command could not be parsed to a valid | |
2330 | bytecode expression and thus can't be evaluated on the target's side. | |
2331 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2332 | } |
492d29ea PA |
2333 | END_CATCH |
2334 | ||
2335 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2336 | |
d3ce09f5 SS |
2337 | /* We have a valid agent expression, return it. */ |
2338 | return aexpr; | |
2339 | } | |
2340 | ||
2341 | /* Based on location BL, create a list of breakpoint commands to be | |
2342 | passed on to the target. If we have duplicated locations with | |
2343 | different commands, we will add any such to the list. */ | |
2344 | ||
2345 | static void | |
2346 | build_target_command_list (struct bp_location *bl) | |
2347 | { | |
2348 | struct bp_location **locp = NULL, **loc2p; | |
2349 | int null_command_or_parse_error = 0; | |
2350 | int modified = bl->needs_update; | |
2351 | struct bp_location *loc; | |
2352 | ||
3cde5c42 PA |
2353 | /* Clear commands left over from a previous insert. */ |
2354 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2355 | |
41fac0cf | 2356 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2357 | return; |
2358 | ||
41fac0cf PA |
2359 | /* For now, limit to agent-style dprintf breakpoints. */ |
2360 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2361 | return; |
2362 | ||
41fac0cf PA |
2363 | /* For now, if we have any duplicate location that isn't a dprintf, |
2364 | don't install the target-side commands, as that would make the | |
2365 | breakpoint not be reported to the core, and we'd lose | |
2366 | control. */ | |
2367 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2368 | { | |
2369 | loc = (*loc2p); | |
2370 | if (is_breakpoint (loc->owner) | |
2371 | && loc->pspace->num == bl->pspace->num | |
2372 | && loc->owner->type != bp_dprintf) | |
2373 | return; | |
2374 | } | |
2375 | ||
d3ce09f5 SS |
2376 | /* Do a first pass to check for locations with no assigned |
2377 | conditions or conditions that fail to parse to a valid agent expression | |
2378 | bytecode. If any of these happen, then it's no use to send conditions | |
2379 | to the target since this location will always trigger and generate a | |
2380 | response back to GDB. */ | |
2381 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2382 | { | |
2383 | loc = (*loc2p); | |
2384 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2385 | { | |
2386 | if (modified) | |
2387 | { | |
d3ce09f5 SS |
2388 | /* Re-parse the commands since something changed. In that |
2389 | case we already freed the command bytecodes (see | |
2390 | force_breakpoint_reinsertion). We just | |
2391 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2392 | loc->cmd_bytecode |
2393 | = parse_cmd_to_aexpr (bl->address, | |
2394 | loc->owner->extra_string); | |
d3ce09f5 SS |
2395 | } |
2396 | ||
2397 | /* If we have a NULL bytecode expression, it means something | |
2398 | went wrong or we have a null command expression. */ | |
2399 | if (!loc->cmd_bytecode) | |
2400 | { | |
2401 | null_command_or_parse_error = 1; | |
2402 | break; | |
2403 | } | |
2404 | } | |
2405 | } | |
2406 | ||
2407 | /* If anything failed, then we're not doing target-side commands, | |
2408 | and so clean up. */ | |
2409 | if (null_command_or_parse_error) | |
2410 | { | |
2411 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2412 | { | |
2413 | loc = (*loc2p); | |
2414 | if (is_breakpoint (loc->owner) | |
2415 | && loc->pspace->num == bl->pspace->num) | |
2416 | { | |
2417 | /* Only go as far as the first NULL bytecode is | |
2418 | located. */ | |
40fb6c5e | 2419 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2420 | return; |
2421 | ||
833177a4 | 2422 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2423 | } |
2424 | } | |
2425 | } | |
2426 | ||
2427 | /* No NULL commands or failed bytecode generation. Build a command list | |
2428 | for this location's address. */ | |
2429 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2430 | { | |
2431 | loc = (*loc2p); | |
2432 | if (loc->owner->extra_string | |
2433 | && is_breakpoint (loc->owner) | |
2434 | && loc->pspace->num == bl->pspace->num | |
2435 | && loc->owner->enable_state == bp_enabled | |
2436 | && loc->enabled) | |
3cde5c42 PA |
2437 | { |
2438 | /* Add the command to the vector. This will be used later | |
2439 | to send the commands to the target. */ | |
2440 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2441 | } | |
d3ce09f5 SS |
2442 | } |
2443 | ||
2444 | bl->target_info.persist = 0; | |
2445 | /* Maybe flag this location as persistent. */ | |
2446 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2447 | bl->target_info.persist = 1; | |
2448 | } | |
2449 | ||
833b7ab5 YQ |
2450 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2451 | of breakpoint according to ADDR except single-step breakpoint. | |
2452 | Get the kind of single-step breakpoint according to the current | |
2453 | registers state. */ | |
cd6c3b4f YQ |
2454 | |
2455 | static int | |
2456 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2457 | { | |
833b7ab5 YQ |
2458 | if (bl->owner->type == bp_single_step) |
2459 | { | |
2460 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2461 | struct regcache *regcache; | |
2462 | ||
2463 | regcache = get_thread_regcache (thr->ptid); | |
2464 | ||
2465 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2466 | regcache, addr); | |
2467 | } | |
2468 | else | |
2469 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2470 | } |
2471 | ||
35df4500 TJB |
2472 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2473 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2474 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2475 | Returns 0 for success, 1 if the bp_location type is not supported or |
2476 | -1 for failure. | |
879bfdc2 | 2477 | |
4a64f543 MS |
2478 | NOTE drow/2003-09-09: This routine could be broken down to an |
2479 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2480 | static int |
35df4500 | 2481 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2482 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2483 | int *disabled_breaks, |
dd61ec5c MW |
2484 | int *hw_breakpoint_error, |
2485 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2486 | { |
0000e5cc PA |
2487 | enum errors bp_err = GDB_NO_ERROR; |
2488 | const char *bp_err_message = NULL; | |
879bfdc2 | 2489 | |
b775012e | 2490 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2491 | return 0; |
2492 | ||
35c63cd8 JB |
2493 | /* Note we don't initialize bl->target_info, as that wipes out |
2494 | the breakpoint location's shadow_contents if the breakpoint | |
2495 | is still inserted at that location. This in turn breaks | |
2496 | target_read_memory which depends on these buffers when | |
2497 | a memory read is requested at the breakpoint location: | |
2498 | Once the target_info has been wiped, we fail to see that | |
2499 | we have a breakpoint inserted at that address and thus | |
2500 | read the breakpoint instead of returning the data saved in | |
2501 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2502 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2503 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2504 | bl->target_info.length = bl->length; |
8181d85f | 2505 | |
b775012e LM |
2506 | /* When working with target-side conditions, we must pass all the conditions |
2507 | for the same breakpoint address down to the target since GDB will not | |
2508 | insert those locations. With a list of breakpoint conditions, the target | |
2509 | can decide when to stop and notify GDB. */ | |
2510 | ||
2511 | if (is_breakpoint (bl->owner)) | |
2512 | { | |
2513 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2514 | build_target_command_list (bl); |
2515 | /* Reset the modification marker. */ | |
b775012e LM |
2516 | bl->needs_update = 0; |
2517 | } | |
2518 | ||
35df4500 TJB |
2519 | if (bl->loc_type == bp_loc_software_breakpoint |
2520 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2521 | { |
35df4500 | 2522 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2523 | { |
2524 | /* If the explicitly specified breakpoint type | |
2525 | is not hardware breakpoint, check the memory map to see | |
2526 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2527 | |
765dc015 VP |
2528 | Two important cases are: |
2529 | - location type is not hardware breakpoint, memory | |
2530 | is readonly. We change the type of the location to | |
2531 | hardware breakpoint. | |
4a64f543 MS |
2532 | - location type is hardware breakpoint, memory is |
2533 | read-write. This means we've previously made the | |
2534 | location hardware one, but then the memory map changed, | |
2535 | so we undo. | |
765dc015 | 2536 | |
4a64f543 MS |
2537 | When breakpoints are removed, remove_breakpoints will use |
2538 | location types we've just set here, the only possible | |
2539 | problem is that memory map has changed during running | |
2540 | program, but it's not going to work anyway with current | |
2541 | gdb. */ | |
765dc015 | 2542 | struct mem_region *mr |
0d5ed153 | 2543 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2544 | |
2545 | if (mr) | |
2546 | { | |
2547 | if (automatic_hardware_breakpoints) | |
2548 | { | |
765dc015 VP |
2549 | enum bp_loc_type new_type; |
2550 | ||
2551 | if (mr->attrib.mode != MEM_RW) | |
2552 | new_type = bp_loc_hardware_breakpoint; | |
2553 | else | |
2554 | new_type = bp_loc_software_breakpoint; | |
2555 | ||
35df4500 | 2556 | if (new_type != bl->loc_type) |
765dc015 VP |
2557 | { |
2558 | static int said = 0; | |
cc59ec59 | 2559 | |
35df4500 | 2560 | bl->loc_type = new_type; |
765dc015 VP |
2561 | if (!said) |
2562 | { | |
3e43a32a MS |
2563 | fprintf_filtered (gdb_stdout, |
2564 | _("Note: automatically using " | |
2565 | "hardware breakpoints for " | |
2566 | "read-only addresses.\n")); | |
765dc015 VP |
2567 | said = 1; |
2568 | } | |
2569 | } | |
2570 | } | |
35df4500 | 2571 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2572 | && mr->attrib.mode != MEM_RW) |
2573 | { | |
2574 | fprintf_unfiltered (tmp_error_stream, | |
2575 | _("Cannot insert breakpoint %d.\n" | |
2576 | "Cannot set software breakpoint " | |
2577 | "at read-only address %s\n"), | |
2578 | bl->owner->number, | |
2579 | paddress (bl->gdbarch, bl->address)); | |
2580 | return 1; | |
2581 | } | |
765dc015 VP |
2582 | } |
2583 | } | |
2584 | ||
879bfdc2 DJ |
2585 | /* First check to see if we have to handle an overlay. */ |
2586 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2587 | || bl->section == NULL |
2588 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2589 | { |
2590 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2591 | TRY |
dd61ec5c | 2592 | { |
0000e5cc PA |
2593 | int val; |
2594 | ||
dd61ec5c | 2595 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2596 | if (val) |
2597 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2598 | } |
492d29ea | 2599 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2600 | { |
0000e5cc PA |
2601 | bp_err = e.error; |
2602 | bp_err_message = e.message; | |
dd61ec5c | 2603 | } |
492d29ea | 2604 | END_CATCH |
879bfdc2 DJ |
2605 | } |
2606 | else | |
2607 | { | |
4a64f543 | 2608 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2609 | Shall we set a breakpoint at the LMA? */ |
2610 | if (!overlay_events_enabled) | |
2611 | { | |
2612 | /* Yes -- overlay event support is not active, | |
2613 | so we must try to set a breakpoint at the LMA. | |
2614 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2615 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2616 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2617 | bl->owner->number); |
879bfdc2 DJ |
2618 | else |
2619 | { | |
35df4500 TJB |
2620 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2621 | bl->section); | |
879bfdc2 | 2622 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2623 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2624 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2625 | |
2626 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2627 | TRY |
0000e5cc PA |
2628 | { |
2629 | int val; | |
2630 | ||
579c6ad9 | 2631 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2632 | = breakpoint_kind (bl, &addr); |
2633 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2634 | val = target_insert_breakpoint (bl->gdbarch, |
2635 | &bl->overlay_target_info); | |
2636 | if (val) | |
2637 | bp_err = GENERIC_ERROR; | |
2638 | } | |
492d29ea | 2639 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2640 | { |
2641 | bp_err = e.error; | |
2642 | bp_err_message = e.message; | |
2643 | } | |
492d29ea | 2644 | END_CATCH |
0000e5cc PA |
2645 | |
2646 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2647 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2648 | "Overlay breakpoint %d " |
2649 | "failed: in ROM?\n", | |
35df4500 | 2650 | bl->owner->number); |
879bfdc2 DJ |
2651 | } |
2652 | } | |
2653 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2654 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2655 | { |
2656 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2657 | TRY |
dd61ec5c | 2658 | { |
0000e5cc PA |
2659 | int val; |
2660 | ||
dd61ec5c | 2661 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2662 | if (val) |
2663 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2664 | } |
492d29ea | 2665 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2666 | { |
0000e5cc PA |
2667 | bp_err = e.error; |
2668 | bp_err_message = e.message; | |
dd61ec5c | 2669 | } |
492d29ea | 2670 | END_CATCH |
879bfdc2 DJ |
2671 | } |
2672 | else | |
2673 | { | |
2674 | /* No. This breakpoint will not be inserted. | |
2675 | No error, but do not mark the bp as 'inserted'. */ | |
2676 | return 0; | |
2677 | } | |
2678 | } | |
2679 | ||
0000e5cc | 2680 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2681 | { |
2682 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2683 | |
2684 | /* In some cases, we might not be able to insert a | |
2685 | breakpoint in a shared library that has already been | |
2686 | removed, but we have not yet processed the shlib unload | |
2687 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2688 | breakpoint insertion themselves can't tell why the |
2689 | breakpoint insertion failed (e.g., the remote target | |
2690 | doesn't define error codes), so we must treat generic | |
2691 | errors as memory errors. */ | |
0000e5cc | 2692 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2693 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2694 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2695 | || shared_objfile_contains_address_p (bl->pspace, |
2696 | bl->address))) | |
879bfdc2 | 2697 | { |
4a64f543 | 2698 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2699 | bl->shlib_disabled = 1; |
8d3788bd | 2700 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2701 | if (!*disabled_breaks) |
2702 | { | |
2703 | fprintf_unfiltered (tmp_error_stream, | |
2704 | "Cannot insert breakpoint %d.\n", | |
2705 | bl->owner->number); | |
2706 | fprintf_unfiltered (tmp_error_stream, | |
2707 | "Temporarily disabling shared " | |
2708 | "library breakpoints:\n"); | |
2709 | } | |
2710 | *disabled_breaks = 1; | |
879bfdc2 | 2711 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2712 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2713 | return 0; |
879bfdc2 DJ |
2714 | } |
2715 | else | |
879bfdc2 | 2716 | { |
35df4500 | 2717 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2718 | { |
0000e5cc PA |
2719 | *hw_breakpoint_error = 1; |
2720 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2721 | fprintf_unfiltered (tmp_error_stream, |
2722 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2723 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2724 | if (bp_err_message != NULL) | |
2725 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2726 | } |
2727 | else | |
2728 | { | |
0000e5cc PA |
2729 | if (bp_err_message == NULL) |
2730 | { | |
1ccbe998 | 2731 | std::string message |
0000e5cc PA |
2732 | = memory_error_message (TARGET_XFER_E_IO, |
2733 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2734 | |
2735 | fprintf_unfiltered (tmp_error_stream, | |
2736 | "Cannot insert breakpoint %d.\n" | |
2737 | "%s\n", | |
1ccbe998 | 2738 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2739 | } |
2740 | else | |
2741 | { | |
2742 | fprintf_unfiltered (tmp_error_stream, | |
2743 | "Cannot insert breakpoint %d: %s\n", | |
2744 | bl->owner->number, | |
2745 | bp_err_message); | |
2746 | } | |
879bfdc2 | 2747 | } |
0000e5cc | 2748 | return 1; |
879bfdc2 DJ |
2749 | |
2750 | } | |
2751 | } | |
2752 | else | |
35df4500 | 2753 | bl->inserted = 1; |
879bfdc2 | 2754 | |
0000e5cc | 2755 | return 0; |
879bfdc2 DJ |
2756 | } |
2757 | ||
35df4500 | 2758 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2759 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2760 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2761 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2762 | { |
0000e5cc PA |
2763 | int val; |
2764 | ||
77b06cd7 TJB |
2765 | gdb_assert (bl->owner->ops != NULL |
2766 | && bl->owner->ops->insert_location != NULL); | |
2767 | ||
2768 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2769 | |
2770 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2771 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2772 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2773 | { |
2774 | struct bp_location *loc, **loc_temp; | |
2775 | ||
2776 | /* But don't try to insert it, if there's already another | |
2777 | hw_access location that would be considered a duplicate | |
2778 | of this one. */ | |
2779 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2780 | if (loc != bl |
85d721b8 | 2781 | && loc->watchpoint_type == hw_access |
35df4500 | 2782 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2783 | { |
35df4500 TJB |
2784 | bl->duplicate = 1; |
2785 | bl->inserted = 1; | |
2786 | bl->target_info = loc->target_info; | |
2787 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2788 | val = 0; |
2789 | break; | |
2790 | } | |
2791 | ||
2792 | if (val == 1) | |
2793 | { | |
77b06cd7 TJB |
2794 | bl->watchpoint_type = hw_access; |
2795 | val = bl->owner->ops->insert_location (bl); | |
2796 | ||
2797 | if (val) | |
2798 | /* Back to the original value. */ | |
2799 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2800 | } |
2801 | } | |
2802 | ||
35df4500 | 2803 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2804 | } |
2805 | ||
35df4500 | 2806 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2807 | { |
0000e5cc PA |
2808 | int val; |
2809 | ||
77b06cd7 TJB |
2810 | gdb_assert (bl->owner->ops != NULL |
2811 | && bl->owner->ops->insert_location != NULL); | |
2812 | ||
2813 | val = bl->owner->ops->insert_location (bl); | |
2814 | if (val) | |
2815 | { | |
2816 | bl->owner->enable_state = bp_disabled; | |
2817 | ||
2818 | if (val == 1) | |
2819 | warning (_("\ | |
2820 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2821 | of catchpoint."), bl->owner->number); | |
2822 | else | |
2823 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2824 | } | |
2825 | ||
2826 | bl->inserted = (val == 0); | |
1640b821 DJ |
2827 | |
2828 | /* We've already printed an error message if there was a problem | |
2829 | inserting this catchpoint, and we've disabled the catchpoint, | |
2830 | so just return success. */ | |
2831 | return 0; | |
879bfdc2 DJ |
2832 | } |
2833 | ||
2834 | return 0; | |
2835 | } | |
2836 | ||
6c95b8df PA |
2837 | /* This function is called when program space PSPACE is about to be |
2838 | deleted. It takes care of updating breakpoints to not reference | |
2839 | PSPACE anymore. */ | |
2840 | ||
2841 | void | |
2842 | breakpoint_program_space_exit (struct program_space *pspace) | |
2843 | { | |
2844 | struct breakpoint *b, *b_temp; | |
876fa593 | 2845 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2846 | |
2847 | /* Remove any breakpoint that was set through this program space. */ | |
2848 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2849 | { | |
2850 | if (b->pspace == pspace) | |
2851 | delete_breakpoint (b); | |
2852 | } | |
2853 | ||
2854 | /* Breakpoints set through other program spaces could have locations | |
2855 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2856 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2857 | { |
2858 | struct bp_location *tmp; | |
2859 | ||
2860 | if (loc->pspace == pspace) | |
2861 | { | |
2bdf28a0 | 2862 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2863 | if (loc->owner->loc == loc) |
2864 | loc->owner->loc = loc->next; | |
2865 | else | |
2866 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2867 | if (tmp->next == loc) | |
2868 | { | |
2869 | tmp->next = loc->next; | |
2870 | break; | |
2871 | } | |
2872 | } | |
2873 | } | |
2874 | ||
2875 | /* Now update the global location list to permanently delete the | |
2876 | removed locations above. */ | |
44702360 | 2877 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2878 | } |
2879 | ||
74960c60 VP |
2880 | /* Make sure all breakpoints are inserted in inferior. |
2881 | Throws exception on any error. | |
2882 | A breakpoint that is already inserted won't be inserted | |
2883 | again, so calling this function twice is safe. */ | |
2884 | void | |
2885 | insert_breakpoints (void) | |
2886 | { | |
2887 | struct breakpoint *bpt; | |
2888 | ||
2889 | ALL_BREAKPOINTS (bpt) | |
2890 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2891 | { |
2892 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2893 | ||
2894 | update_watchpoint (w, 0 /* don't reparse. */); | |
2895 | } | |
74960c60 | 2896 | |
04086b45 PA |
2897 | /* Updating watchpoints creates new locations, so update the global |
2898 | location list. Explicitly tell ugll to insert locations and | |
2899 | ignore breakpoints_always_inserted_mode. */ | |
2900 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2901 | } |
2902 | ||
20388dd6 YQ |
2903 | /* Invoke CALLBACK for each of bp_location. */ |
2904 | ||
2905 | void | |
2906 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2907 | { | |
2908 | struct bp_location *loc, **loc_tmp; | |
2909 | ||
2910 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2911 | { | |
2912 | callback (loc, NULL); | |
2913 | } | |
2914 | } | |
2915 | ||
b775012e LM |
2916 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2917 | target. It is the case with deleting and disabling of breakpoints when using | |
2918 | always-inserted mode. */ | |
2919 | ||
2920 | static void | |
2921 | update_inserted_breakpoint_locations (void) | |
2922 | { | |
2923 | struct bp_location *bl, **blp_tmp; | |
2924 | int error_flag = 0; | |
2925 | int val = 0; | |
2926 | int disabled_breaks = 0; | |
2927 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2928 | int hw_bp_details_reported = 0; |
b775012e | 2929 | |
d7e74731 | 2930 | string_file tmp_error_stream; |
b775012e LM |
2931 | |
2932 | /* Explicitly mark the warning -- this will only be printed if | |
2933 | there was an error. */ | |
d7e74731 | 2934 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2935 | |
5ed8105e | 2936 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2937 | |
2938 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2939 | { | |
2940 | /* We only want to update software breakpoints and hardware | |
2941 | breakpoints. */ | |
2942 | if (!is_breakpoint (bl->owner)) | |
2943 | continue; | |
2944 | ||
2945 | /* We only want to update locations that are already inserted | |
2946 | and need updating. This is to avoid unwanted insertion during | |
2947 | deletion of breakpoints. */ | |
2948 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2949 | continue; | |
2950 | ||
2951 | switch_to_program_space_and_thread (bl->pspace); | |
2952 | ||
2953 | /* For targets that support global breakpoints, there's no need | |
2954 | to select an inferior to insert breakpoint to. In fact, even | |
2955 | if we aren't attached to any process yet, we should still | |
2956 | insert breakpoints. */ | |
f5656ead | 2957 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2958 | && ptid_equal (inferior_ptid, null_ptid)) |
2959 | continue; | |
2960 | ||
d7e74731 | 2961 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2962 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2963 | if (val) |
2964 | error_flag = val; | |
2965 | } | |
2966 | ||
2967 | if (error_flag) | |
2968 | { | |
223ffa71 | 2969 | target_terminal::ours_for_output (); |
b775012e LM |
2970 | error_stream (tmp_error_stream); |
2971 | } | |
b775012e LM |
2972 | } |
2973 | ||
c30eee59 | 2974 | /* Used when starting or continuing the program. */ |
c906108c | 2975 | |
74960c60 VP |
2976 | static void |
2977 | insert_breakpoint_locations (void) | |
c906108c | 2978 | { |
a5606eee | 2979 | struct breakpoint *bpt; |
35df4500 | 2980 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2981 | int error_flag = 0; |
c906108c | 2982 | int val = 0; |
3fbb6ffa | 2983 | int disabled_breaks = 0; |
81d0cc19 | 2984 | int hw_breakpoint_error = 0; |
dd61ec5c | 2985 | int hw_bp_error_explained_already = 0; |
c906108c | 2986 | |
d7e74731 PA |
2987 | string_file tmp_error_stream; |
2988 | ||
81d0cc19 GS |
2989 | /* Explicitly mark the warning -- this will only be printed if |
2990 | there was an error. */ | |
d7e74731 | 2991 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2992 | |
5ed8105e | 2993 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2994 | |
35df4500 | 2995 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2996 | { |
b775012e | 2997 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2998 | continue; |
2999 | ||
4a64f543 MS |
3000 | /* There is no point inserting thread-specific breakpoints if |
3001 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3002 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3003 | if (bl->owner->thread != -1 |
5d5658a1 | 3004 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3005 | continue; |
3006 | ||
35df4500 | 3007 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3008 | |
3009 | /* For targets that support global breakpoints, there's no need | |
3010 | to select an inferior to insert breakpoint to. In fact, even | |
3011 | if we aren't attached to any process yet, we should still | |
3012 | insert breakpoints. */ | |
f5656ead | 3013 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
3014 | && ptid_equal (inferior_ptid, null_ptid)) |
3015 | continue; | |
3016 | ||
d7e74731 | 3017 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3018 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3019 | if (val) |
eacd795a | 3020 | error_flag = val; |
879bfdc2 | 3021 | } |
c906108c | 3022 | |
4a64f543 MS |
3023 | /* If we failed to insert all locations of a watchpoint, remove |
3024 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3025 | ALL_BREAKPOINTS (bpt) |
3026 | { | |
3027 | int some_failed = 0; | |
3028 | struct bp_location *loc; | |
3029 | ||
3030 | if (!is_hardware_watchpoint (bpt)) | |
3031 | continue; | |
3032 | ||
d6b74ac4 | 3033 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3034 | continue; |
74960c60 VP |
3035 | |
3036 | if (bpt->disposition == disp_del_at_next_stop) | |
3037 | continue; | |
a5606eee VP |
3038 | |
3039 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3040 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3041 | { |
3042 | some_failed = 1; | |
3043 | break; | |
3044 | } | |
3045 | if (some_failed) | |
3046 | { | |
3047 | for (loc = bpt->loc; loc; loc = loc->next) | |
3048 | if (loc->inserted) | |
834c0d03 | 3049 | remove_breakpoint (loc); |
a5606eee VP |
3050 | |
3051 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3052 | tmp_error_stream.printf ("Could not insert " |
3053 | "hardware watchpoint %d.\n", | |
3054 | bpt->number); | |
eacd795a | 3055 | error_flag = -1; |
a5606eee VP |
3056 | } |
3057 | } | |
3058 | ||
eacd795a | 3059 | if (error_flag) |
81d0cc19 GS |
3060 | { |
3061 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3062 | message about possibly exhausted resources. */ | |
dd61ec5c | 3063 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3064 | { |
d7e74731 | 3065 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3066 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3067 | } |
223ffa71 | 3068 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3069 | error_stream (tmp_error_stream); |
3070 | } | |
c906108c SS |
3071 | } |
3072 | ||
c30eee59 TJB |
3073 | /* Used when the program stops. |
3074 | Returns zero if successful, or non-zero if there was a problem | |
3075 | removing a breakpoint location. */ | |
3076 | ||
c906108c | 3077 | int |
fba45db2 | 3078 | remove_breakpoints (void) |
c906108c | 3079 | { |
35df4500 | 3080 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3081 | int val = 0; |
c906108c | 3082 | |
35df4500 | 3083 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3084 | { |
1e4d1764 | 3085 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3086 | val |= remove_breakpoint (bl); |
c5aa993b | 3087 | } |
3a1bae8e | 3088 | return val; |
c906108c SS |
3089 | } |
3090 | ||
49fa26b0 PA |
3091 | /* When a thread exits, remove breakpoints that are related to |
3092 | that thread. */ | |
3093 | ||
3094 | static void | |
3095 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3096 | { | |
3097 | struct breakpoint *b, *b_tmp; | |
3098 | ||
3099 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3100 | { | |
5d5658a1 | 3101 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3102 | { |
3103 | b->disposition = disp_del_at_next_stop; | |
3104 | ||
3105 | printf_filtered (_("\ | |
43792cf0 PA |
3106 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3107 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3108 | |
3109 | /* Hide it from the user. */ | |
3110 | b->number = 0; | |
3111 | } | |
3112 | } | |
3113 | } | |
3114 | ||
6c95b8df PA |
3115 | /* Remove breakpoints of process PID. */ |
3116 | ||
3117 | int | |
3118 | remove_breakpoints_pid (int pid) | |
3119 | { | |
35df4500 | 3120 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3121 | int val; |
3122 | struct inferior *inf = find_inferior_pid (pid); | |
3123 | ||
35df4500 | 3124 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3125 | { |
35df4500 | 3126 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3127 | continue; |
3128 | ||
fc126975 | 3129 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3130 | { |
834c0d03 | 3131 | val = remove_breakpoint (bl); |
6c95b8df PA |
3132 | if (val != 0) |
3133 | return val; | |
3134 | } | |
3135 | } | |
3136 | return 0; | |
3137 | } | |
3138 | ||
e58b0e63 PA |
3139 | static int internal_breakpoint_number = -1; |
3140 | ||
84f4c1fe PM |
3141 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3142 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3143 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3144 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3145 | breakpoint_count and that value incremented. Internal breakpoints |
3146 | do not set the internal var bpnum. */ | |
3147 | static void | |
3148 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3149 | { | |
3150 | if (internal) | |
3151 | b->number = internal_breakpoint_number--; | |
3152 | else | |
3153 | { | |
3154 | set_breakpoint_count (breakpoint_count + 1); | |
3155 | b->number = breakpoint_count; | |
3156 | } | |
3157 | } | |
3158 | ||
e62c965a | 3159 | static struct breakpoint * |
a6d9a66e | 3160 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3161 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3162 | const struct breakpoint_ops *ops) |
e62c965a | 3163 | { |
51abb421 | 3164 | symtab_and_line sal; |
e62c965a PP |
3165 | sal.pc = address; |
3166 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3167 | sal.pspace = current_program_space; |
e62c965a | 3168 | |
51abb421 | 3169 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3170 | b->number = internal_breakpoint_number--; |
3171 | b->disposition = disp_donttouch; | |
3172 | ||
3173 | return b; | |
3174 | } | |
3175 | ||
17450429 PP |
3176 | static const char *const longjmp_names[] = |
3177 | { | |
3178 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3179 | }; | |
3180 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3181 | ||
3182 | /* Per-objfile data private to breakpoint.c. */ | |
3183 | struct breakpoint_objfile_data | |
3184 | { | |
3185 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3186 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3187 | |
3188 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3189 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3190 | |
28106bc2 | 3191 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3192 | int longjmp_searched = 0; |
28106bc2 | 3193 | |
45461e0d SM |
3194 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3195 | references. */ | |
3196 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3197 | |
17450429 | 3198 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3199 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3200 | |
3201 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3202 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3203 | |
3204 | /* True if we have looked for exception probes. */ | |
43dce439 | 3205 | int exception_searched = 0; |
28106bc2 | 3206 | |
45461e0d SM |
3207 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3208 | references. */ | |
3209 | std::vector<probe *> exception_probes; | |
17450429 PP |
3210 | }; |
3211 | ||
3212 | static const struct objfile_data *breakpoint_objfile_key; | |
3213 | ||
3214 | /* Minimal symbol not found sentinel. */ | |
3215 | static struct minimal_symbol msym_not_found; | |
3216 | ||
3217 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3218 | ||
3219 | static int | |
3220 | msym_not_found_p (const struct minimal_symbol *msym) | |
3221 | { | |
3222 | return msym == &msym_not_found; | |
3223 | } | |
3224 | ||
3225 | /* Return per-objfile data needed by breakpoint.c. | |
3226 | Allocate the data if necessary. */ | |
3227 | ||
3228 | static struct breakpoint_objfile_data * | |
3229 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3230 | { | |
3231 | struct breakpoint_objfile_data *bp_objfile_data; | |
3232 | ||
9a3c8263 SM |
3233 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3234 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3235 | if (bp_objfile_data == NULL) |
3236 | { | |
43dce439 | 3237 | bp_objfile_data = new breakpoint_objfile_data (); |
17450429 PP |
3238 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); |
3239 | } | |
3240 | return bp_objfile_data; | |
3241 | } | |
3242 | ||
28106bc2 | 3243 | static void |
43dce439 | 3244 | free_breakpoint_objfile_data (struct objfile *obj, void *data) |
28106bc2 | 3245 | { |
9a3c8263 SM |
3246 | struct breakpoint_objfile_data *bp_objfile_data |
3247 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 | 3248 | |
43dce439 | 3249 | delete bp_objfile_data; |
28106bc2 SDJ |
3250 | } |
3251 | ||
e62c965a | 3252 | static void |
af02033e | 3253 | create_overlay_event_breakpoint (void) |
e62c965a | 3254 | { |
69de3c6a | 3255 | struct objfile *objfile; |
af02033e | 3256 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3257 | |
69de3c6a PP |
3258 | ALL_OBJFILES (objfile) |
3259 | { | |
3260 | struct breakpoint *b; | |
17450429 PP |
3261 | struct breakpoint_objfile_data *bp_objfile_data; |
3262 | CORE_ADDR addr; | |
67994074 | 3263 | struct explicit_location explicit_loc; |
69de3c6a | 3264 | |
17450429 PP |
3265 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3266 | ||
3b7344d5 | 3267 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3268 | continue; |
3269 | ||
3b7344d5 | 3270 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3271 | { |
3b7344d5 | 3272 | struct bound_minimal_symbol m; |
17450429 PP |
3273 | |
3274 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3275 | if (m.minsym == NULL) |
17450429 PP |
3276 | { |
3277 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3278 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3279 | continue; |
3280 | } | |
3281 | bp_objfile_data->overlay_msym = m; | |
3282 | } | |
e62c965a | 3283 | |
77e371c0 | 3284 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3285 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3286 | bp_overlay_event, |
3287 | &internal_breakpoint_ops); | |
67994074 KS |
3288 | initialize_explicit_location (&explicit_loc); |
3289 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3290 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3291 | |
69de3c6a PP |
3292 | if (overlay_debugging == ovly_auto) |
3293 | { | |
3294 | b->enable_state = bp_enabled; | |
3295 | overlay_events_enabled = 1; | |
3296 | } | |
3297 | else | |
3298 | { | |
3299 | b->enable_state = bp_disabled; | |
3300 | overlay_events_enabled = 0; | |
3301 | } | |
e62c965a | 3302 | } |
e62c965a PP |
3303 | } |
3304 | ||
0fd8e87f | 3305 | static void |
af02033e | 3306 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3307 | { |
6c95b8df | 3308 | struct program_space *pspace; |
6c95b8df | 3309 | |
5ed8105e | 3310 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3311 | |
6c95b8df | 3312 | ALL_PSPACES (pspace) |
af02033e PP |
3313 | { |
3314 | struct objfile *objfile; | |
3315 | ||
3316 | set_current_program_space (pspace); | |
3317 | ||
3318 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3319 | { |
af02033e PP |
3320 | int i; |
3321 | struct gdbarch *gdbarch; | |
17450429 | 3322 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3323 | |
af02033e | 3324 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3325 | |
17450429 PP |
3326 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3327 | ||
28106bc2 SDJ |
3328 | if (!bp_objfile_data->longjmp_searched) |
3329 | { | |
45461e0d SM |
3330 | std::vector<probe *> ret |
3331 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3332 | |
45461e0d | 3333 | if (!ret.empty ()) |
25f9533e SDJ |
3334 | { |
3335 | /* We are only interested in checking one element. */ | |
45461e0d | 3336 | probe *p = ret[0]; |
25f9533e SDJ |
3337 | |
3338 | if (!can_evaluate_probe_arguments (p)) | |
3339 | { | |
3340 | /* We cannot use the probe interface here, because it does | |
3341 | not know how to evaluate arguments. */ | |
45461e0d | 3342 | ret.clear (); |
25f9533e SDJ |
3343 | } |
3344 | } | |
3345 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3346 | bp_objfile_data->longjmp_searched = 1; |
3347 | } | |
3348 | ||
45461e0d | 3349 | if (!bp_objfile_data->longjmp_probes.empty ()) |
28106bc2 | 3350 | { |
28106bc2 SDJ |
3351 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
3352 | ||
45461e0d | 3353 | for (probe *p : bp_objfile_data->longjmp_probes) |
28106bc2 SDJ |
3354 | { |
3355 | struct breakpoint *b; | |
3356 | ||
729662a5 | 3357 | b = create_internal_breakpoint (gdbarch, |
45461e0d | 3358 | get_probe_address (p, objfile), |
28106bc2 SDJ |
3359 | bp_longjmp_master, |
3360 | &internal_breakpoint_ops); | |
d28cd78a | 3361 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3362 | b->enable_state = bp_disabled; |
3363 | } | |
3364 | ||
3365 | continue; | |
3366 | } | |
3367 | ||
0569175e TSD |
3368 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3369 | continue; | |
3370 | ||
17450429 | 3371 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3372 | { |
3373 | struct breakpoint *b; | |
af02033e | 3374 | const char *func_name; |
17450429 | 3375 | CORE_ADDR addr; |
67994074 | 3376 | struct explicit_location explicit_loc; |
6c95b8df | 3377 | |
3b7344d5 | 3378 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3379 | continue; |
0fd8e87f | 3380 | |
17450429 | 3381 | func_name = longjmp_names[i]; |
3b7344d5 | 3382 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3383 | { |
3b7344d5 | 3384 | struct bound_minimal_symbol m; |
17450429 PP |
3385 | |
3386 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3387 | if (m.minsym == NULL) |
17450429 PP |
3388 | { |
3389 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3390 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3391 | continue; |
3392 | } | |
3393 | bp_objfile_data->longjmp_msym[i] = m; | |
3394 | } | |
3395 | ||
77e371c0 | 3396 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3397 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3398 | &internal_breakpoint_ops); | |
67994074 KS |
3399 | initialize_explicit_location (&explicit_loc); |
3400 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3401 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3402 | b->enable_state = bp_disabled; |
3403 | } | |
0fd8e87f | 3404 | } |
af02033e | 3405 | } |
0fd8e87f UW |
3406 | } |
3407 | ||
af02033e | 3408 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3409 | static void |
af02033e | 3410 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3411 | { |
3412 | struct program_space *pspace; | |
af02033e | 3413 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3414 | |
5ed8105e | 3415 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3416 | |
3417 | ALL_PSPACES (pspace) | |
17450429 PP |
3418 | { |
3419 | struct objfile *objfile; | |
3420 | CORE_ADDR addr; | |
3421 | ||
3422 | set_current_program_space (pspace); | |
3423 | ||
aa7d318d TT |
3424 | ALL_OBJFILES (objfile) |
3425 | { | |
3426 | struct breakpoint *b; | |
17450429 | 3427 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3428 | struct explicit_location explicit_loc; |
aa7d318d | 3429 | |
17450429 | 3430 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3431 | |
3b7344d5 | 3432 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3433 | continue; |
3434 | ||
3b7344d5 | 3435 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3436 | { |
3b7344d5 | 3437 | struct bound_minimal_symbol m; |
17450429 PP |
3438 | |
3439 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3440 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3441 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3442 | { |
3443 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3444 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3445 | continue; |
3446 | } | |
3447 | bp_objfile_data->terminate_msym = m; | |
3448 | } | |
aa7d318d | 3449 | |
77e371c0 | 3450 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3451 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3452 | bp_std_terminate_master, |
3453 | &internal_breakpoint_ops); | |
67994074 KS |
3454 | initialize_explicit_location (&explicit_loc); |
3455 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3456 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3457 | b->enable_state = bp_disabled; |
3458 | } | |
17450429 | 3459 | } |
aa7d318d TT |
3460 | } |
3461 | ||
186c406b TT |
3462 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3463 | ||
70221824 | 3464 | static void |
186c406b TT |
3465 | create_exception_master_breakpoint (void) |
3466 | { | |
3467 | struct objfile *objfile; | |
17450429 | 3468 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3469 | |
3470 | ALL_OBJFILES (objfile) | |
3471 | { | |
17450429 PP |
3472 | struct breakpoint *b; |
3473 | struct gdbarch *gdbarch; | |
3474 | struct breakpoint_objfile_data *bp_objfile_data; | |
3475 | CORE_ADDR addr; | |
67994074 | 3476 | struct explicit_location explicit_loc; |
17450429 PP |
3477 | |
3478 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3479 | ||
28106bc2 SDJ |
3480 | /* We prefer the SystemTap probe point if it exists. */ |
3481 | if (!bp_objfile_data->exception_searched) | |
3482 | { | |
45461e0d SM |
3483 | std::vector<probe *> ret |
3484 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3485 | |
45461e0d | 3486 | if (!ret.empty ()) |
25f9533e SDJ |
3487 | { |
3488 | /* We are only interested in checking one element. */ | |
45461e0d | 3489 | probe *p = ret[0]; |
25f9533e SDJ |
3490 | |
3491 | if (!can_evaluate_probe_arguments (p)) | |
3492 | { | |
3493 | /* We cannot use the probe interface here, because it does | |
3494 | not know how to evaluate arguments. */ | |
45461e0d | 3495 | ret.clear (); |
25f9533e SDJ |
3496 | } |
3497 | } | |
3498 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3499 | bp_objfile_data->exception_searched = 1; |
3500 | } | |
3501 | ||
45461e0d | 3502 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 SDJ |
3503 | { |
3504 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
45461e0d SM |
3505 | |
3506 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 SDJ |
3507 | { |
3508 | struct breakpoint *b; | |
3509 | ||
729662a5 | 3510 | b = create_internal_breakpoint (gdbarch, |
45461e0d | 3511 | get_probe_address (p, objfile), |
28106bc2 SDJ |
3512 | bp_exception_master, |
3513 | &internal_breakpoint_ops); | |
d28cd78a | 3514 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3515 | b->enable_state = bp_disabled; |
3516 | } | |
3517 | ||
3518 | continue; | |
3519 | } | |
3520 | ||
3521 | /* Otherwise, try the hook function. */ | |
3522 | ||
3b7344d5 | 3523 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3524 | continue; |
3525 | ||
3526 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3527 | |
3b7344d5 | 3528 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3529 | { |
3b7344d5 | 3530 | struct bound_minimal_symbol debug_hook; |
186c406b | 3531 | |
17450429 | 3532 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3533 | if (debug_hook.minsym == NULL) |
17450429 | 3534 | { |
3b7344d5 | 3535 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3536 | continue; |
3537 | } | |
3538 | ||
3539 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3540 | } |
17450429 | 3541 | |
77e371c0 | 3542 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3543 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3544 | ¤t_target); | |
06edf0c0 PA |
3545 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3546 | &internal_breakpoint_ops); | |
67994074 KS |
3547 | initialize_explicit_location (&explicit_loc); |
3548 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3549 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3550 | b->enable_state = bp_disabled; |
186c406b | 3551 | } |
186c406b TT |
3552 | } |
3553 | ||
9ef9e6a6 KS |
3554 | /* Does B have a location spec? */ |
3555 | ||
3556 | static int | |
3557 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3558 | { | |
d28cd78a | 3559 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3560 | } |
3561 | ||
c906108c | 3562 | void |
fba45db2 | 3563 | update_breakpoints_after_exec (void) |
c906108c | 3564 | { |
35df4500 | 3565 | struct breakpoint *b, *b_tmp; |
876fa593 | 3566 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3567 | |
25b22b0a PA |
3568 | /* We're about to delete breakpoints from GDB's lists. If the |
3569 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3570 | writing the breakpoints' "shadow contents" back into memory. The | |
3571 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3572 | do that. Instead, the target is responsible from marking | |
3573 | breakpoints out as soon as it detects an exec. We don't do that | |
3574 | here instead, because there may be other attempts to delete | |
3575 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3576 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3577 | if (bploc->pspace == current_program_space) |
3578 | gdb_assert (!bploc->inserted); | |
c906108c | 3579 | |
35df4500 | 3580 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3581 | { |
6c95b8df PA |
3582 | if (b->pspace != current_program_space) |
3583 | continue; | |
3584 | ||
4a64f543 | 3585 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3586 | if (b->type == bp_shlib_event) |
3587 | { | |
3588 | delete_breakpoint (b); | |
3589 | continue; | |
3590 | } | |
c906108c | 3591 | |
4a64f543 | 3592 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3593 | if (b->type == bp_jit_event) |
3594 | { | |
3595 | delete_breakpoint (b); | |
3596 | continue; | |
3597 | } | |
3598 | ||
1900040c | 3599 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3600 | as must overlay event and longjmp master breakpoints. */ |
3601 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3602 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3603 | || b->type == bp_exception_master) | |
c4093a6a JM |
3604 | { |
3605 | delete_breakpoint (b); | |
3606 | continue; | |
3607 | } | |
3608 | ||
4a64f543 | 3609 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3610 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3611 | { |
3612 | delete_breakpoint (b); | |
3613 | continue; | |
3614 | } | |
3615 | ||
7c16b83e PA |
3616 | /* Just like single-step breakpoints. */ |
3617 | if (b->type == bp_single_step) | |
3618 | { | |
3619 | delete_breakpoint (b); | |
3620 | continue; | |
3621 | } | |
3622 | ||
611c83ae PA |
3623 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3624 | after an exec. */ | |
186c406b | 3625 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3626 | || b->type == bp_longjmp_call_dummy |
186c406b | 3627 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3628 | { |
3629 | delete_breakpoint (b); | |
3630 | continue; | |
3631 | } | |
3632 | ||
ce78b96d JB |
3633 | if (b->type == bp_catchpoint) |
3634 | { | |
3635 | /* For now, none of the bp_catchpoint breakpoints need to | |
3636 | do anything at this point. In the future, if some of | |
3637 | the catchpoints need to something, we will need to add | |
3638 | a new method, and call this method from here. */ | |
3639 | continue; | |
3640 | } | |
3641 | ||
c5aa993b JM |
3642 | /* bp_finish is a special case. The only way we ought to be able |
3643 | to see one of these when an exec() has happened, is if the user | |
3644 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3645 | carries them to the call-site of the current callee, by setting | |
3646 | a temporary bp there and resuming. But in this case, the finish | |
3647 | will carry them entirely through the vfork & exec. | |
3648 | ||
3649 | We don't want to allow a bp_finish to remain inserted now. But | |
3650 | we can't safely delete it, 'cause finish_command has a handle to | |
3651 | the bp on a bpstat, and will later want to delete it. There's a | |
3652 | chance (and I've seen it happen) that if we delete the bp_finish | |
3653 | here, that its storage will get reused by the time finish_command | |
3654 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3655 | We really must allow finish_command to delete a bp_finish. | |
3656 | ||
e5dd4106 | 3657 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3658 | it's safe to delete something others may have handles to?" |
3659 | problem, what we'll do here is just uninsert the bp_finish, and | |
3660 | let finish_command delete it. | |
3661 | ||
3662 | (We know the bp_finish is "doomed" in the sense that it's | |
3663 | momentary, and will be deleted as soon as finish_command sees | |
3664 | the inferior stopped. So it doesn't matter that the bp's | |
3665 | address is probably bogus in the new a.out, unlike e.g., the | |
3666 | solib breakpoints.) */ | |
c5aa993b | 3667 | |
c5aa993b JM |
3668 | if (b->type == bp_finish) |
3669 | { | |
3670 | continue; | |
3671 | } | |
3672 | ||
3673 | /* Without a symbolic address, we have little hope of the | |
3674 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3675 | a.out. */ |
9ef9e6a6 | 3676 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3677 | { |
3678 | delete_breakpoint (b); | |
3679 | continue; | |
3680 | } | |
c5aa993b | 3681 | } |
c906108c SS |
3682 | } |
3683 | ||
3684 | int | |
d80ee84f | 3685 | detach_breakpoints (ptid_t ptid) |
c906108c | 3686 | { |
35df4500 | 3687 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3688 | int val = 0; |
2989a365 | 3689 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3690 | struct inferior *inf = current_inferior (); |
c5aa993b | 3691 | |
dfd4cc63 | 3692 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3693 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3694 | |
6c95b8df | 3695 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3696 | inferior_ptid = ptid; |
35df4500 | 3697 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3698 | { |
35df4500 | 3699 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3700 | continue; |
3701 | ||
bd9673a4 PW |
3702 | /* This function must physically remove breakpoints locations |
3703 | from the specified ptid, without modifying the breakpoint | |
3704 | package's state. Locations of type bp_loc_other are only | |
3705 | maintained at GDB side. So, there is no need to remove | |
3706 | these bp_loc_other locations. Moreover, removing these | |
3707 | would modify the breakpoint package's state. */ | |
3708 | if (bl->loc_type == bp_loc_other) | |
3709 | continue; | |
3710 | ||
35df4500 | 3711 | if (bl->inserted) |
b2b6a7da | 3712 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3713 | } |
d03285ec | 3714 | |
3a1bae8e | 3715 | return val; |
c906108c SS |
3716 | } |
3717 | ||
35df4500 | 3718 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3719 | Note that this is used to detach breakpoints from a child fork. |
3720 | When we get here, the child isn't in the inferior list, and neither | |
3721 | do we have objects to represent its address space --- we should | |
35df4500 | 3722 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3723 | |
c906108c | 3724 | static int |
b2b6a7da | 3725 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3726 | { |
3727 | int val; | |
c5aa993b | 3728 | |
35df4500 TJB |
3729 | /* BL is never in moribund_locations by our callers. */ |
3730 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3731 | |
74960c60 VP |
3732 | /* The type of none suggests that owner is actually deleted. |
3733 | This should not ever happen. */ | |
35df4500 | 3734 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3735 | |
35df4500 TJB |
3736 | if (bl->loc_type == bp_loc_software_breakpoint |
3737 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3738 | { |
c02f5703 MS |
3739 | /* "Normal" instruction breakpoint: either the standard |
3740 | trap-instruction bp (bp_breakpoint), or a | |
3741 | bp_hardware_breakpoint. */ | |
3742 | ||
3743 | /* First check to see if we have to handle an overlay. */ | |
3744 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3745 | || bl->section == NULL |
3746 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3747 | { |
3748 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3749 | |
3750 | /* If we're trying to uninsert a memory breakpoint that we | |
3751 | know is set in a dynamic object that is marked | |
3752 | shlib_disabled, then either the dynamic object was | |
3753 | removed with "remove-symbol-file" or with | |
3754 | "nosharedlibrary". In the former case, we don't know | |
3755 | whether another dynamic object might have loaded over the | |
3756 | breakpoint's address -- the user might well let us know | |
3757 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3758 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3759 | list of dynamically loaded objects). If we have the |
3760 | breakpoint's shadow memory, that is, this is a software | |
3761 | breakpoint managed by GDB, check whether the breakpoint | |
3762 | is still inserted in memory, to avoid overwriting wrong | |
3763 | code with stale saved shadow contents. Note that HW | |
3764 | breakpoints don't have shadow memory, as they're | |
3765 | implemented using a mechanism that is not dependent on | |
3766 | being able to modify the target's memory, and as such | |
3767 | they should always be removed. */ | |
3768 | if (bl->shlib_disabled | |
3769 | && bl->target_info.shadow_len != 0 | |
3770 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3771 | val = 0; | |
3772 | else | |
73971819 | 3773 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3774 | } |
c906108c SS |
3775 | else |
3776 | { | |
4a64f543 | 3777 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3778 | Did we set a breakpoint at the LMA? */ |
3779 | if (!overlay_events_enabled) | |
3780 | { | |
3781 | /* Yes -- overlay event support is not active, so we | |
3782 | should have set a breakpoint at the LMA. Remove it. | |
3783 | */ | |
c02f5703 MS |
3784 | /* Ignore any failures: if the LMA is in ROM, we will |
3785 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3786 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3787 | target_remove_hw_breakpoint (bl->gdbarch, | |
3788 | &bl->overlay_target_info); | |
c02f5703 | 3789 | else |
35df4500 | 3790 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3791 | &bl->overlay_target_info, |
3792 | reason); | |
c02f5703 MS |
3793 | } |
3794 | /* Did we set a breakpoint at the VMA? | |
3795 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3796 | if (bl->inserted) |
c906108c | 3797 | { |
c02f5703 MS |
3798 | /* Yes -- remove it. Previously we did not bother to |
3799 | remove the breakpoint if the section had been | |
3800 | unmapped, but let's not rely on that being safe. We | |
3801 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3802 | |
3803 | /* However, we should remove *software* breakpoints only | |
3804 | if the section is still mapped, or else we overwrite | |
3805 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3806 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3807 | || section_is_mapped (bl->section)) | |
73971819 | 3808 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3809 | else |
3810 | val = 0; | |
c906108c | 3811 | } |
c02f5703 MS |
3812 | else |
3813 | { | |
3814 | /* No -- not inserted, so no need to remove. No error. */ | |
3815 | val = 0; | |
3816 | } | |
c906108c | 3817 | } |
879d1e6b | 3818 | |
08351840 PA |
3819 | /* In some cases, we might not be able to remove a breakpoint in |
3820 | a shared library that has already been removed, but we have | |
3821 | not yet processed the shlib unload event. Similarly for an | |
3822 | unloaded add-symbol-file object - the user might not yet have | |
3823 | had the chance to remove-symbol-file it. shlib_disabled will | |
3824 | be set if the library/object has already been removed, but | |
3825 | the breakpoint hasn't been uninserted yet, e.g., after | |
3826 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3827 | always-inserted mode. */ | |
076855f9 | 3828 | if (val |
08351840 PA |
3829 | && (bl->loc_type == bp_loc_software_breakpoint |
3830 | && (bl->shlib_disabled | |
3831 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3832 | || shared_objfile_contains_address_p (bl->pspace, |
3833 | bl->address)))) | |
879d1e6b UW |
3834 | val = 0; |
3835 | ||
c906108c SS |
3836 | if (val) |
3837 | return val; | |
b2b6a7da | 3838 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3839 | } |
35df4500 | 3840 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3841 | { |
77b06cd7 TJB |
3842 | gdb_assert (bl->owner->ops != NULL |
3843 | && bl->owner->ops->remove_location != NULL); | |
3844 | ||
b2b6a7da | 3845 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3846 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3847 | |
c906108c | 3848 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3849 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3850 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3851 | bl->owner->number); |
c906108c | 3852 | } |
35df4500 TJB |
3853 | else if (bl->owner->type == bp_catchpoint |
3854 | && breakpoint_enabled (bl->owner) | |
3855 | && !bl->duplicate) | |
ce78b96d | 3856 | { |
77b06cd7 TJB |
3857 | gdb_assert (bl->owner->ops != NULL |
3858 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3859 | |
73971819 | 3860 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3861 | if (val) |
3862 | return val; | |
77b06cd7 | 3863 | |
b2b6a7da | 3864 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3865 | } |
c906108c SS |
3866 | |
3867 | return 0; | |
3868 | } | |
3869 | ||
6c95b8df | 3870 | static int |
834c0d03 | 3871 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3872 | { |
35df4500 TJB |
3873 | /* BL is never in moribund_locations by our callers. */ |
3874 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3875 | |
6c95b8df PA |
3876 | /* The type of none suggests that owner is actually deleted. |
3877 | This should not ever happen. */ | |
35df4500 | 3878 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3879 | |
5ed8105e | 3880 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3881 | |
35df4500 | 3882 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3883 | |
5ed8105e | 3884 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3885 | } |
3886 | ||
c906108c SS |
3887 | /* Clear the "inserted" flag in all breakpoints. */ |
3888 | ||
25b22b0a | 3889 | void |
fba45db2 | 3890 | mark_breakpoints_out (void) |
c906108c | 3891 | { |
35df4500 | 3892 | struct bp_location *bl, **blp_tmp; |
c906108c | 3893 | |
35df4500 | 3894 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3895 | if (bl->pspace == current_program_space) |
35df4500 | 3896 | bl->inserted = 0; |
c906108c SS |
3897 | } |
3898 | ||
53a5351d JM |
3899 | /* Clear the "inserted" flag in all breakpoints and delete any |
3900 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3901 | |
3902 | Plus other such housekeeping that has to be done for breakpoints | |
3903 | between runs. | |
3904 | ||
53a5351d JM |
3905 | Note: this function gets called at the end of a run (by |
3906 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3907 | init_wait_for_inferior). */ |
c906108c SS |
3908 | |
3909 | ||
3910 | ||
3911 | void | |
fba45db2 | 3912 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3913 | { |
35df4500 | 3914 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3915 | struct bp_location *bl; |
1c5cfe86 | 3916 | int ix; |
6c95b8df | 3917 | struct program_space *pspace = current_program_space; |
c906108c | 3918 | |
50c71eaf PA |
3919 | /* If breakpoint locations are shared across processes, then there's |
3920 | nothing to do. */ | |
f5656ead | 3921 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3922 | return; |
3923 | ||
1a853c52 | 3924 | mark_breakpoints_out (); |
075f6582 | 3925 | |
35df4500 | 3926 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3927 | { |
6c95b8df PA |
3928 | if (b->loc && b->loc->pspace != pspace) |
3929 | continue; | |
3930 | ||
c5aa993b JM |
3931 | switch (b->type) |
3932 | { | |
3933 | case bp_call_dummy: | |
e2e4d78b | 3934 | case bp_longjmp_call_dummy: |
c906108c | 3935 | |
c5aa993b | 3936 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3937 | cause problems when the inferior is rerun, so we better get |
3938 | rid of it. */ | |
3939 | ||
3940 | case bp_watchpoint_scope: | |
3941 | ||
3942 | /* Also get rid of scope breakpoints. */ | |
3943 | ||
3944 | case bp_shlib_event: | |
3945 | ||
3946 | /* Also remove solib event breakpoints. Their addresses may | |
3947 | have changed since the last time we ran the program. | |
3948 | Actually we may now be debugging against different target; | |
3949 | and so the solib backend that installed this breakpoint may | |
3950 | not be used in by the target. E.g., | |
3951 | ||
3952 | (gdb) file prog-linux | |
3953 | (gdb) run # native linux target | |
3954 | ... | |
3955 | (gdb) kill | |
3956 | (gdb) file prog-win.exe | |
3957 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3958 | */ | |
c906108c | 3959 | |
f59f708a PA |
3960 | case bp_step_resume: |
3961 | ||
3962 | /* Also remove step-resume breakpoints. */ | |
3963 | ||
7c16b83e PA |
3964 | case bp_single_step: |
3965 | ||
3966 | /* Also remove single-step breakpoints. */ | |
3967 | ||
c5aa993b JM |
3968 | delete_breakpoint (b); |
3969 | break; | |
c906108c | 3970 | |
c5aa993b JM |
3971 | case bp_watchpoint: |
3972 | case bp_hardware_watchpoint: | |
3973 | case bp_read_watchpoint: | |
3974 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3975 | { |
3976 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3977 | |
3a5c3e22 PA |
3978 | /* Likewise for watchpoints on local expressions. */ |
3979 | if (w->exp_valid_block != NULL) | |
3980 | delete_breakpoint (b); | |
63000888 | 3981 | else |
3a5c3e22 | 3982 | { |
63000888 PA |
3983 | /* Get rid of existing locations, which are no longer |
3984 | valid. New ones will be created in | |
3985 | update_watchpoint, when the inferior is restarted. | |
3986 | The next update_global_location_list call will | |
3987 | garbage collect them. */ | |
3988 | b->loc = NULL; | |
3989 | ||
3990 | if (context == inf_starting) | |
3991 | { | |
3992 | /* Reset val field to force reread of starting value in | |
3993 | insert_breakpoints. */ | |
3994 | if (w->val) | |
3995 | value_free (w->val); | |
3996 | w->val = NULL; | |
3997 | w->val_valid = 0; | |
3998 | } | |
3999 | } | |
3a5c3e22 | 4000 | } |
c5aa993b JM |
4001 | break; |
4002 | default: | |
c5aa993b JM |
4003 | break; |
4004 | } | |
4005 | } | |
1c5cfe86 PA |
4006 | |
4007 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4008 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4009 | decref_bp_location (&bl); | |
1c5cfe86 | 4010 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4011 | } |
4012 | ||
6c95b8df PA |
4013 | /* These functions concern about actual breakpoints inserted in the |
4014 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4015 | we need to hop over the bkpt --- so we check for address space | |
4016 | match, not program space. */ | |
4017 | ||
c2c6d25f JM |
4018 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4019 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4020 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4021 | permanent breakpoint. | |
4022 | - When continuing from a location with an ordinary breakpoint, we | |
4023 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4024 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4025 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4026 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4027 | |
c2c6d25f | 4028 | enum breakpoint_here |
accd0bcd | 4029 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4030 | { |
35df4500 | 4031 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4032 | int any_breakpoint_here = 0; |
c906108c | 4033 | |
35df4500 | 4034 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4035 | { |
35df4500 TJB |
4036 | if (bl->loc_type != bp_loc_software_breakpoint |
4037 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4038 | continue; |
4039 | ||
f1310107 | 4040 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4041 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4042 | || bl->permanent) |
f1310107 | 4043 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4044 | { |
4045 | if (overlay_debugging | |
35df4500 TJB |
4046 | && section_is_overlay (bl->section) |
4047 | && !section_is_mapped (bl->section)) | |
075f6582 | 4048 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4049 | else if (bl->permanent) |
075f6582 DJ |
4050 | return permanent_breakpoint_here; |
4051 | else | |
4052 | any_breakpoint_here = 1; | |
4053 | } | |
4054 | } | |
c906108c | 4055 | |
f486487f | 4056 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4057 | } |
4058 | ||
d35ae833 PA |
4059 | /* See breakpoint.h. */ |
4060 | ||
4061 | int | |
accd0bcd | 4062 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4063 | CORE_ADDR addr, ULONGEST len) |
4064 | { | |
4065 | struct bp_location *bl, **blp_tmp; | |
4066 | ||
4067 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4068 | { | |
4069 | if (bl->loc_type != bp_loc_software_breakpoint | |
4070 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4071 | continue; | |
4072 | ||
4073 | if ((breakpoint_enabled (bl->owner) | |
4074 | || bl->permanent) | |
4075 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4076 | addr, len)) | |
4077 | { | |
4078 | if (overlay_debugging | |
4079 | && section_is_overlay (bl->section) | |
4080 | && !section_is_mapped (bl->section)) | |
4081 | { | |
4082 | /* Unmapped overlay -- can't be a match. */ | |
4083 | continue; | |
4084 | } | |
4085 | ||
4086 | return 1; | |
4087 | } | |
4088 | } | |
4089 | ||
4090 | return 0; | |
4091 | } | |
4092 | ||
1c5cfe86 PA |
4093 | /* Return true if there's a moribund breakpoint at PC. */ |
4094 | ||
4095 | int | |
accd0bcd | 4096 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4097 | { |
4098 | struct bp_location *loc; | |
4099 | int ix; | |
4100 | ||
4101 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4102 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4103 | return 1; |
4104 | ||
4105 | return 0; | |
4106 | } | |
c2c6d25f | 4107 | |
f7ce857f PA |
4108 | /* Returns non-zero iff BL is inserted at PC, in address space |
4109 | ASPACE. */ | |
4110 | ||
4111 | static int | |
4112 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4113 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4114 | { |
4115 | if (bl->inserted | |
4116 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4117 | aspace, pc)) | |
4118 | { | |
4119 | if (overlay_debugging | |
4120 | && section_is_overlay (bl->section) | |
4121 | && !section_is_mapped (bl->section)) | |
4122 | return 0; /* unmapped overlay -- can't be a match */ | |
4123 | else | |
4124 | return 1; | |
4125 | } | |
4126 | return 0; | |
4127 | } | |
4128 | ||
a1fd2fa5 | 4129 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4130 | |
4131 | int | |
accd0bcd | 4132 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4133 | { |
f7ce857f | 4134 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4135 | |
f7ce857f | 4136 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4137 | { |
f7ce857f PA |
4138 | struct bp_location *bl = *blp; |
4139 | ||
35df4500 TJB |
4140 | if (bl->loc_type != bp_loc_software_breakpoint |
4141 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4142 | continue; |
4143 | ||
f7ce857f PA |
4144 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4145 | return 1; | |
c5aa993b | 4146 | } |
c36b740a VP |
4147 | return 0; |
4148 | } | |
4149 | ||
a1fd2fa5 PA |
4150 | /* This function returns non-zero iff there is a software breakpoint |
4151 | inserted at PC. */ | |
c36b740a VP |
4152 | |
4153 | int | |
accd0bcd | 4154 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4155 | CORE_ADDR pc) |
4fa8626c | 4156 | { |
f7ce857f | 4157 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4158 | |
f7ce857f | 4159 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4160 | { |
f7ce857f PA |
4161 | struct bp_location *bl = *blp; |
4162 | ||
35df4500 | 4163 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4164 | continue; |
4165 | ||
f7ce857f PA |
4166 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4167 | return 1; | |
4fa8626c DJ |
4168 | } |
4169 | ||
4170 | return 0; | |
9c02b525 PA |
4171 | } |
4172 | ||
4173 | /* See breakpoint.h. */ | |
4174 | ||
4175 | int | |
accd0bcd | 4176 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4177 | CORE_ADDR pc) |
4178 | { | |
4179 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4180 | |
4181 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4182 | { | |
4183 | struct bp_location *bl = *blp; | |
4184 | ||
4185 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4186 | continue; | |
4187 | ||
4188 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4189 | return 1; | |
4190 | } | |
4191 | ||
4192 | return 0; | |
4fa8626c DJ |
4193 | } |
4194 | ||
9093389c | 4195 | int |
accd0bcd | 4196 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4197 | CORE_ADDR addr, ULONGEST len) |
4198 | { | |
4199 | struct breakpoint *bpt; | |
4200 | ||
4201 | ALL_BREAKPOINTS (bpt) | |
4202 | { | |
4203 | struct bp_location *loc; | |
4204 | ||
4205 | if (bpt->type != bp_hardware_watchpoint | |
4206 | && bpt->type != bp_access_watchpoint) | |
4207 | continue; | |
4208 | ||
4209 | if (!breakpoint_enabled (bpt)) | |
4210 | continue; | |
4211 | ||
4212 | for (loc = bpt->loc; loc; loc = loc->next) | |
4213 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4214 | { | |
4215 | CORE_ADDR l, h; | |
4216 | ||
4217 | /* Check for intersection. */ | |
768adc05 PA |
4218 | l = std::max<CORE_ADDR> (loc->address, addr); |
4219 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4220 | if (l < h) |
4221 | return 1; | |
4222 | } | |
4223 | } | |
4224 | return 0; | |
4225 | } | |
c906108c | 4226 | \f |
c5aa993b | 4227 | |
c906108c SS |
4228 | /* bpstat stuff. External routines' interfaces are documented |
4229 | in breakpoint.h. */ | |
4230 | ||
4231 | int | |
c326b90e | 4232 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4233 | { |
533be4dd | 4234 | return (ep->type == bp_catchpoint); |
c906108c SS |
4235 | } |
4236 | ||
f431efe5 PA |
4237 | /* Frees any storage that is part of a bpstat. Does not walk the |
4238 | 'next' chain. */ | |
4239 | ||
04afa70c | 4240 | bpstats::~bpstats () |
198757a8 | 4241 | { |
04afa70c TT |
4242 | if (old_val != NULL) |
4243 | value_free (old_val); | |
04afa70c TT |
4244 | if (bp_location_at != NULL) |
4245 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4246 | } |
4247 | ||
c906108c SS |
4248 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4249 | Also free any storage that is part of a bpstat. */ | |
4250 | ||
4251 | void | |
fba45db2 | 4252 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4253 | { |
4254 | bpstat p; | |
4255 | bpstat q; | |
4256 | ||
4257 | if (bsp == 0) | |
4258 | return; | |
4259 | p = *bsp; | |
4260 | while (p != NULL) | |
4261 | { | |
4262 | q = p->next; | |
04afa70c | 4263 | delete p; |
c906108c SS |
4264 | p = q; |
4265 | } | |
4266 | *bsp = NULL; | |
4267 | } | |
4268 | ||
04afa70c TT |
4269 | bpstats::bpstats (const bpstats &other) |
4270 | : next (NULL), | |
4271 | bp_location_at (other.bp_location_at), | |
4272 | breakpoint_at (other.breakpoint_at), | |
4273 | commands (other.commands), | |
4274 | old_val (other.old_val), | |
4275 | print (other.print), | |
4276 | stop (other.stop), | |
4277 | print_it (other.print_it) | |
4278 | { | |
4279 | if (old_val != NULL) | |
4280 | { | |
4281 | old_val = value_copy (old_val); | |
4282 | release_value (old_val); | |
4283 | } | |
4284 | incref_bp_location (bp_location_at); | |
04afa70c TT |
4285 | } |
4286 | ||
c906108c SS |
4287 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4288 | is part of the bpstat is copied as well. */ | |
4289 | ||
4290 | bpstat | |
fba45db2 | 4291 | bpstat_copy (bpstat bs) |
c906108c SS |
4292 | { |
4293 | bpstat p = NULL; | |
4294 | bpstat tmp; | |
4295 | bpstat retval = NULL; | |
4296 | ||
4297 | if (bs == NULL) | |
4298 | return bs; | |
4299 | ||
4300 | for (; bs != NULL; bs = bs->next) | |
4301 | { | |
04afa70c | 4302 | tmp = new bpstats (*bs); |
31cc81e9 | 4303 | |
c906108c SS |
4304 | if (p == NULL) |
4305 | /* This is the first thing in the chain. */ | |
4306 | retval = tmp; | |
4307 | else | |
4308 | p->next = tmp; | |
4309 | p = tmp; | |
4310 | } | |
4311 | p->next = NULL; | |
4312 | return retval; | |
4313 | } | |
4314 | ||
4a64f543 | 4315 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4316 | |
4317 | bpstat | |
fba45db2 | 4318 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4319 | { |
c5aa993b JM |
4320 | if (bsp == NULL) |
4321 | return NULL; | |
c906108c | 4322 | |
c5aa993b JM |
4323 | for (; bsp != NULL; bsp = bsp->next) |
4324 | { | |
f431efe5 | 4325 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4326 | return bsp; |
4327 | } | |
c906108c SS |
4328 | return NULL; |
4329 | } | |
4330 | ||
ab04a2af TT |
4331 | /* See breakpoint.h. */ |
4332 | ||
47591c29 | 4333 | int |
427cd150 | 4334 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4335 | { |
ab04a2af TT |
4336 | for (; bsp != NULL; bsp = bsp->next) |
4337 | { | |
427cd150 TT |
4338 | if (bsp->breakpoint_at == NULL) |
4339 | { | |
4340 | /* A moribund location can never explain a signal other than | |
4341 | GDB_SIGNAL_TRAP. */ | |
4342 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4343 | return 1; |
427cd150 TT |
4344 | } |
4345 | else | |
47591c29 PA |
4346 | { |
4347 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4348 | sig)) | |
4349 | return 1; | |
4350 | } | |
ab04a2af TT |
4351 | } |
4352 | ||
47591c29 | 4353 | return 0; |
ab04a2af TT |
4354 | } |
4355 | ||
4a64f543 MS |
4356 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4357 | stopped at. *BSP upon return is a bpstat which points to the | |
4358 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4359 | good for anything but further calls to bpstat_num). | |
4360 | ||
8671a17b PA |
4361 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4362 | Return -1 if stopped at a breakpoint that has been deleted since | |
4363 | we set it. | |
4364 | Return 1 otherwise. */ | |
c906108c SS |
4365 | |
4366 | int | |
8671a17b | 4367 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4368 | { |
4369 | struct breakpoint *b; | |
4370 | ||
4371 | if ((*bsp) == NULL) | |
4372 | return 0; /* No more breakpoint values */ | |
8671a17b | 4373 | |
4a64f543 MS |
4374 | /* We assume we'll never have several bpstats that correspond to a |
4375 | single breakpoint -- otherwise, this function might return the | |
4376 | same number more than once and this will look ugly. */ | |
f431efe5 | 4377 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4378 | *bsp = (*bsp)->next; |
4379 | if (b == NULL) | |
4380 | return -1; /* breakpoint that's been deleted since */ | |
4381 | ||
4382 | *num = b->number; /* We have its number */ | |
4383 | return 1; | |
c906108c SS |
4384 | } |
4385 | ||
e93ca019 | 4386 | /* See breakpoint.h. */ |
c906108c SS |
4387 | |
4388 | void | |
e93ca019 | 4389 | bpstat_clear_actions (void) |
c906108c | 4390 | { |
e93ca019 JK |
4391 | struct thread_info *tp; |
4392 | bpstat bs; | |
4393 | ||
4394 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4395 | return; | |
4396 | ||
4397 | tp = find_thread_ptid (inferior_ptid); | |
4398 | if (tp == NULL) | |
4399 | return; | |
4400 | ||
4401 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4402 | { |
d1b0a7bf | 4403 | bs->commands = NULL; |
abf85f46 | 4404 | |
c906108c SS |
4405 | if (bs->old_val != NULL) |
4406 | { | |
4407 | value_free (bs->old_val); | |
4408 | bs->old_val = NULL; | |
4409 | } | |
4410 | } | |
4411 | } | |
4412 | ||
f3b1572e PA |
4413 | /* Called when a command is about to proceed the inferior. */ |
4414 | ||
4415 | static void | |
4416 | breakpoint_about_to_proceed (void) | |
4417 | { | |
4418 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4419 | { | |
4420 | struct thread_info *tp = inferior_thread (); | |
4421 | ||
4422 | /* Allow inferior function calls in breakpoint commands to not | |
4423 | interrupt the command list. When the call finishes | |
4424 | successfully, the inferior will be standing at the same | |
4425 | breakpoint as if nothing happened. */ | |
16c381f0 | 4426 | if (tp->control.in_infcall) |
f3b1572e PA |
4427 | return; |
4428 | } | |
4429 | ||
4430 | breakpoint_proceeded = 1; | |
4431 | } | |
4432 | ||
abf85f46 JK |
4433 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4434 | or its equivalent. */ | |
4435 | ||
4436 | static int | |
4437 | command_line_is_silent (struct command_line *cmd) | |
4438 | { | |
4f45d445 | 4439 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4440 | } |
4441 | ||
4a64f543 MS |
4442 | /* Execute all the commands associated with all the breakpoints at |
4443 | this location. Any of these commands could cause the process to | |
4444 | proceed beyond this point, etc. We look out for such changes by | |
4445 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4446 | |
347bddb7 PA |
4447 | Returns true if a breakpoint command resumed the inferior. In that |
4448 | case, it is the caller's responsibility to recall it again with the | |
4449 | bpstat of the current thread. */ | |
4450 | ||
4451 | static int | |
4452 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4453 | { |
4454 | bpstat bs; | |
347bddb7 | 4455 | int again = 0; |
c906108c SS |
4456 | |
4457 | /* Avoid endless recursion if a `source' command is contained | |
4458 | in bs->commands. */ | |
4459 | if (executing_breakpoint_commands) | |
347bddb7 | 4460 | return 0; |
c906108c | 4461 | |
81b1e71c TT |
4462 | scoped_restore save_executing |
4463 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4464 | |
1ac32117 | 4465 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4466 | |
4a64f543 | 4467 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4468 | bs = *bsp; |
4469 | ||
4470 | breakpoint_proceeded = 0; | |
4471 | for (; bs != NULL; bs = bs->next) | |
4472 | { | |
d1b0a7bf | 4473 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4474 | |
4475 | /* Take ownership of the BSP's command tree, if it has one. | |
4476 | ||
4477 | The command tree could legitimately contain commands like | |
4478 | 'step' and 'next', which call clear_proceed_status, which | |
4479 | frees stop_bpstat's command tree. To make sure this doesn't | |
4480 | free the tree we're executing out from under us, we need to | |
4481 | take ownership of the tree ourselves. Since a given bpstat's | |
4482 | commands are only executed once, we don't need to copy it; we | |
4483 | can clear the pointer in the bpstat, and make sure we free | |
4484 | the tree when we're done. */ | |
d1b0a7bf | 4485 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4486 | bs->commands = NULL; |
d1b0a7bf TT |
4487 | if (ccmd != NULL) |
4488 | cmd = ccmd.get (); | |
abf85f46 JK |
4489 | if (command_line_is_silent (cmd)) |
4490 | { | |
4491 | /* The action has been already done by bpstat_stop_status. */ | |
4492 | cmd = cmd->next; | |
4493 | } | |
6c50ab1c | 4494 | |
c906108c SS |
4495 | while (cmd != NULL) |
4496 | { | |
4497 | execute_control_command (cmd); | |
4498 | ||
4499 | if (breakpoint_proceeded) | |
4500 | break; | |
4501 | else | |
4502 | cmd = cmd->next; | |
4503 | } | |
6c50ab1c | 4504 | |
c906108c | 4505 | if (breakpoint_proceeded) |
32c1e744 | 4506 | { |
cb814510 | 4507 | if (current_ui->async) |
347bddb7 PA |
4508 | /* If we are in async mode, then the target might be still |
4509 | running, not stopped at any breakpoint, so nothing for | |
4510 | us to do here -- just return to the event loop. */ | |
4511 | ; | |
32c1e744 VP |
4512 | else |
4513 | /* In sync mode, when execute_control_command returns | |
4514 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4515 | Breakpoint commands for that stop were not run, since |
4516 | execute_command does not run breakpoint commands -- | |
4517 | only command_line_handler does, but that one is not | |
4518 | involved in execution of breakpoint commands. So, we | |
4519 | can now execute breakpoint commands. It should be | |
4520 | noted that making execute_command do bpstat actions is | |
4521 | not an option -- in this case we'll have recursive | |
4522 | invocation of bpstat for each breakpoint with a | |
4523 | command, and can easily blow up GDB stack. Instead, we | |
4524 | return true, which will trigger the caller to recall us | |
4525 | with the new stop_bpstat. */ | |
4526 | again = 1; | |
4527 | break; | |
32c1e744 | 4528 | } |
c906108c | 4529 | } |
347bddb7 PA |
4530 | return again; |
4531 | } | |
4532 | ||
4533 | void | |
4534 | bpstat_do_actions (void) | |
4535 | { | |
353d1d73 JK |
4536 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4537 | ||
347bddb7 PA |
4538 | /* Do any commands attached to breakpoint we are stopped at. */ |
4539 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4540 | && target_has_execution | |
4541 | && !is_exited (inferior_ptid) | |
4542 | && !is_executing (inferior_ptid)) | |
4543 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4544 | and only return when it is stopped at the next breakpoint, we | |
4545 | keep doing breakpoint actions until it returns false to | |
4546 | indicate the inferior was not resumed. */ | |
16c381f0 | 4547 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4548 | break; |
353d1d73 JK |
4549 | |
4550 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4551 | } |
4552 | ||
fa4727a6 DJ |
4553 | /* Print out the (old or new) value associated with a watchpoint. */ |
4554 | ||
4555 | static void | |
4556 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4557 | { | |
4558 | if (val == NULL) | |
4559 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4560 | else | |
79a45b7d TT |
4561 | { |
4562 | struct value_print_options opts; | |
4563 | get_user_print_options (&opts); | |
4564 | value_print (val, stream, &opts); | |
4565 | } | |
fa4727a6 DJ |
4566 | } |
4567 | ||
f303dbd6 PA |
4568 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4569 | debugging multiple threads. */ | |
4570 | ||
4571 | void | |
4572 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4573 | { | |
112e8700 | 4574 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4575 | return; |
4576 | ||
112e8700 | 4577 | uiout->text ("\n"); |
f303dbd6 PA |
4578 | |
4579 | if (show_thread_that_caused_stop ()) | |
4580 | { | |
4581 | const char *name; | |
4582 | struct thread_info *thr = inferior_thread (); | |
4583 | ||
112e8700 SM |
4584 | uiout->text ("Thread "); |
4585 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4586 | |
4587 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4588 | if (name != NULL) | |
4589 | { | |
112e8700 SM |
4590 | uiout->text (" \""); |
4591 | uiout->field_fmt ("name", "%s", name); | |
4592 | uiout->text ("\""); | |
f303dbd6 PA |
4593 | } |
4594 | ||
112e8700 | 4595 | uiout->text (" hit "); |
f303dbd6 PA |
4596 | } |
4597 | } | |
4598 | ||
e514a9d6 | 4599 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4600 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4601 | 'print_it' in the bpstat structure. Under some circumstances we |
4602 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4603 | normal_stop(). */ |
e514a9d6 JM |
4604 | |
4605 | static enum print_stop_action | |
4606 | print_bp_stop_message (bpstat bs) | |
4607 | { | |
4608 | switch (bs->print_it) | |
4609 | { | |
4610 | case print_it_noop: | |
4a64f543 | 4611 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4612 | return PRINT_UNKNOWN; |
4613 | break; | |
4614 | ||
4615 | case print_it_done: | |
4616 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4617 | relevant messages. */ |
e514a9d6 JM |
4618 | return PRINT_SRC_AND_LOC; |
4619 | break; | |
4620 | ||
4621 | case print_it_normal: | |
4f8d1dc6 | 4622 | { |
f431efe5 PA |
4623 | struct breakpoint *b = bs->breakpoint_at; |
4624 | ||
1a6a67de TJB |
4625 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4626 | which has since been deleted. */ | |
4627 | if (b == NULL) | |
4628 | return PRINT_UNKNOWN; | |
4629 | ||
348d480f PA |
4630 | /* Normal case. Call the breakpoint's print_it method. */ |
4631 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4632 | } |
348d480f | 4633 | break; |
3086aeae | 4634 | |
e514a9d6 | 4635 | default: |
8e65ff28 | 4636 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4637 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4638 | break; |
c906108c | 4639 | } |
c906108c SS |
4640 | } |
4641 | ||
edcc5120 TT |
4642 | /* A helper function that prints a shared library stopped event. */ |
4643 | ||
4644 | static void | |
4645 | print_solib_event (int is_catchpoint) | |
4646 | { | |
4647 | int any_deleted | |
4648 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4649 | int any_added | |
4650 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4651 | ||
4652 | if (!is_catchpoint) | |
4653 | { | |
4654 | if (any_added || any_deleted) | |
112e8700 | 4655 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4656 | else |
112e8700 SM |
4657 | current_uiout->text (_("Stopped due to shared library event (no " |
4658 | "libraries added or removed)\n")); | |
edcc5120 TT |
4659 | } |
4660 | ||
112e8700 SM |
4661 | if (current_uiout->is_mi_like_p ()) |
4662 | current_uiout->field_string ("reason", | |
4663 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4664 | |
4665 | if (any_deleted) | |
4666 | { | |
edcc5120 TT |
4667 | char *name; |
4668 | int ix; | |
4669 | ||
112e8700 | 4670 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4671 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
edcc5120 TT |
4672 | for (ix = 0; |
4673 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4674 | ix, name); | |
4675 | ++ix) | |
4676 | { | |
4677 | if (ix > 0) | |
112e8700 SM |
4678 | current_uiout->text (" "); |
4679 | current_uiout->field_string ("library", name); | |
4680 | current_uiout->text ("\n"); | |
edcc5120 | 4681 | } |
edcc5120 TT |
4682 | } |
4683 | ||
4684 | if (any_added) | |
4685 | { | |
4686 | struct so_list *iter; | |
4687 | int ix; | |
edcc5120 | 4688 | |
112e8700 | 4689 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4690 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4691 | for (ix = 0; |
4692 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4693 | ix, iter); | |
4694 | ++ix) | |
4695 | { | |
4696 | if (ix > 0) | |
112e8700 SM |
4697 | current_uiout->text (" "); |
4698 | current_uiout->field_string ("library", iter->so_name); | |
4699 | current_uiout->text ("\n"); | |
edcc5120 | 4700 | } |
edcc5120 TT |
4701 | } |
4702 | } | |
4703 | ||
e514a9d6 JM |
4704 | /* Print a message indicating what happened. This is called from |
4705 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4706 | list - a list of the eventpoints that caused this stop. KIND is |
4707 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4708 | routine calls the generic print routine for printing a message |
4709 | about reasons for stopping. This will print (for example) the | |
4710 | "Breakpoint n," part of the output. The return value of this | |
4711 | routine is one of: | |
c906108c | 4712 | |
4a64f543 | 4713 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4714 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4715 | code to print the location. An example is |
c5aa993b JM |
4716 | "Breakpoint 1, " which should be followed by |
4717 | the location. | |
917317f4 | 4718 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4719 | to also print the location part of the message. |
4720 | An example is the catch/throw messages, which | |
4a64f543 | 4721 | don't require a location appended to the end. |
917317f4 | 4722 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4723 | further info to be printed. */ |
c906108c | 4724 | |
917317f4 | 4725 | enum print_stop_action |
36dfb11c | 4726 | bpstat_print (bpstat bs, int kind) |
c906108c | 4727 | { |
f486487f | 4728 | enum print_stop_action val; |
c5aa993b | 4729 | |
c906108c | 4730 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4731 | (Currently all watchpoints go on the bpstat whether hit or not. |
4732 | That probably could (should) be changed, provided care is taken | |
c906108c | 4733 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4734 | for (; bs; bs = bs->next) |
4735 | { | |
4736 | val = print_bp_stop_message (bs); | |
4737 | if (val == PRINT_SRC_ONLY | |
4738 | || val == PRINT_SRC_AND_LOC | |
4739 | || val == PRINT_NOTHING) | |
4740 | return val; | |
4741 | } | |
c906108c | 4742 | |
36dfb11c TT |
4743 | /* If we had hit a shared library event breakpoint, |
4744 | print_bp_stop_message would print out this message. If we hit an | |
4745 | OS-level shared library event, do the same thing. */ | |
4746 | if (kind == TARGET_WAITKIND_LOADED) | |
4747 | { | |
edcc5120 | 4748 | print_solib_event (0); |
36dfb11c TT |
4749 | return PRINT_NOTHING; |
4750 | } | |
4751 | ||
e514a9d6 | 4752 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4753 | with and nothing was printed. */ |
917317f4 | 4754 | return PRINT_UNKNOWN; |
c906108c SS |
4755 | } |
4756 | ||
bf469271 | 4757 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4758 | |
bf469271 PA |
4759 | static bool |
4760 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4761 | { |
278cd55f | 4762 | struct value *mark = value_mark (); |
bf469271 | 4763 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4764 | |
c906108c | 4765 | value_free_to_mark (mark); |
bf469271 | 4766 | return res; |
c906108c SS |
4767 | } |
4768 | ||
5760d0ab | 4769 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4770 | |
04afa70c TT |
4771 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4772 | : next (NULL), | |
4773 | bp_location_at (bl), | |
4774 | breakpoint_at (bl->owner), | |
4775 | commands (NULL), | |
4776 | old_val (NULL), | |
4777 | print (0), | |
4778 | stop (0), | |
4779 | print_it (print_it_normal) | |
c906108c | 4780 | { |
f431efe5 | 4781 | incref_bp_location (bl); |
04afa70c TT |
4782 | **bs_link_pointer = this; |
4783 | *bs_link_pointer = &next; | |
4784 | } | |
4785 | ||
4786 | bpstats::bpstats () | |
4787 | : next (NULL), | |
4788 | bp_location_at (NULL), | |
4789 | breakpoint_at (NULL), | |
4790 | commands (NULL), | |
4791 | old_val (NULL), | |
4792 | print (0), | |
4793 | stop (0), | |
4794 | print_it (print_it_normal) | |
4795 | { | |
c906108c SS |
4796 | } |
4797 | \f | |
d983da9c DJ |
4798 | /* The target has stopped with waitstatus WS. Check if any hardware |
4799 | watchpoints have triggered, according to the target. */ | |
4800 | ||
4801 | int | |
4802 | watchpoints_triggered (struct target_waitstatus *ws) | |
4803 | { | |
d92524f1 | 4804 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4805 | CORE_ADDR addr; |
4806 | struct breakpoint *b; | |
4807 | ||
4808 | if (!stopped_by_watchpoint) | |
4809 | { | |
4810 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4811 | as not triggered. */ | |
4812 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4813 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4814 | { |
4815 | struct watchpoint *w = (struct watchpoint *) b; | |
4816 | ||
4817 | w->watchpoint_triggered = watch_triggered_no; | |
4818 | } | |
d983da9c DJ |
4819 | |
4820 | return 0; | |
4821 | } | |
4822 | ||
4823 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4824 | { | |
4825 | /* We were stopped by a watchpoint, but we don't know where. | |
4826 | Mark all watchpoints as unknown. */ | |
4827 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4828 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4829 | { |
4830 | struct watchpoint *w = (struct watchpoint *) b; | |
4831 | ||
4832 | w->watchpoint_triggered = watch_triggered_unknown; | |
4833 | } | |
d983da9c | 4834 | |
3c4797ba | 4835 | return 1; |
d983da9c DJ |
4836 | } |
4837 | ||
4838 | /* The target could report the data address. Mark watchpoints | |
4839 | affected by this data address as triggered, and all others as not | |
4840 | triggered. */ | |
4841 | ||
4842 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4843 | if (is_hardware_watchpoint (b)) |
d983da9c | 4844 | { |
3a5c3e22 | 4845 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4846 | struct bp_location *loc; |
d983da9c | 4847 | |
3a5c3e22 | 4848 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4849 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4850 | { |
3a5c3e22 | 4851 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4852 | { |
3a5c3e22 PA |
4853 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4854 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4855 | |
4856 | if (newaddr == start) | |
4857 | { | |
3a5c3e22 | 4858 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4859 | break; |
4860 | } | |
4861 | } | |
4862 | /* Exact match not required. Within range is sufficient. */ | |
4863 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4864 | addr, loc->address, | |
4865 | loc->length)) | |
4866 | { | |
3a5c3e22 | 4867 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4868 | break; |
4869 | } | |
4870 | } | |
d983da9c DJ |
4871 | } |
4872 | ||
4873 | return 1; | |
4874 | } | |
4875 | ||
bf469271 PA |
4876 | /* Possible return values for watchpoint_check. */ |
4877 | enum wp_check_result | |
4878 | { | |
4879 | /* The watchpoint has been deleted. */ | |
4880 | WP_DELETED = 1, | |
4881 | ||
4882 | /* The value has changed. */ | |
4883 | WP_VALUE_CHANGED = 2, | |
4884 | ||
4885 | /* The value has not changed. */ | |
4886 | WP_VALUE_NOT_CHANGED = 3, | |
4887 | ||
4888 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4889 | WP_IGNORE = 4, | |
4890 | }; | |
c906108c SS |
4891 | |
4892 | #define BP_TEMPFLAG 1 | |
4893 | #define BP_HARDWAREFLAG 2 | |
4894 | ||
4a64f543 | 4895 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4896 | changed. */ |
553e4c11 | 4897 | |
bf469271 PA |
4898 | static wp_check_result |
4899 | watchpoint_check (bpstat bs) | |
c906108c | 4900 | { |
3a5c3e22 | 4901 | struct watchpoint *b; |
c906108c SS |
4902 | struct frame_info *fr; |
4903 | int within_current_scope; | |
4904 | ||
f431efe5 | 4905 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4906 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4907 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4908 | |
f6bc2008 PA |
4909 | /* If this is a local watchpoint, we only want to check if the |
4910 | watchpoint frame is in scope if the current thread is the thread | |
4911 | that was used to create the watchpoint. */ | |
4912 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4913 | return WP_IGNORE; |
f6bc2008 | 4914 | |
c906108c SS |
4915 | if (b->exp_valid_block == NULL) |
4916 | within_current_scope = 1; | |
4917 | else | |
4918 | { | |
edb3359d DJ |
4919 | struct frame_info *frame = get_current_frame (); |
4920 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4921 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4922 | ||
c9cf6e20 | 4923 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4924 | still in the function but the stack frame has already been |
4925 | invalidated. Since we can't rely on the values of local | |
4926 | variables after the stack has been destroyed, we are treating | |
4927 | the watchpoint in that state as `not changed' without further | |
4928 | checking. Don't mark watchpoints as changed if the current | |
4929 | frame is in an epilogue - even if they are in some other | |
4930 | frame, our view of the stack is likely to be wrong and | |
4931 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4932 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4933 | return WP_IGNORE; |
a0f49112 | 4934 | |
101dcfbe | 4935 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4936 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4937 | |
4938 | /* If we've gotten confused in the unwinder, we might have | |
4939 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4940 | if (within_current_scope) |
4941 | { | |
4942 | struct symbol *function; | |
4943 | ||
4944 | function = get_frame_function (fr); | |
4945 | if (function == NULL | |
4946 | || !contained_in (b->exp_valid_block, | |
4947 | SYMBOL_BLOCK_VALUE (function))) | |
4948 | within_current_scope = 0; | |
4949 | } | |
69fbadd5 | 4950 | |
edb3359d | 4951 | if (within_current_scope) |
c906108c SS |
4952 | /* If we end up stopping, the current frame will get selected |
4953 | in normal_stop. So this call to select_frame won't affect | |
4954 | the user. */ | |
0f7d239c | 4955 | select_frame (fr); |
c906108c | 4956 | } |
c5aa993b | 4957 | |
c906108c SS |
4958 | if (within_current_scope) |
4959 | { | |
4a64f543 MS |
4960 | /* We use value_{,free_to_}mark because it could be a *long* |
4961 | time before we return to the command level and call | |
4962 | free_all_values. We can't call free_all_values because we | |
4963 | might be in the middle of evaluating a function call. */ | |
c906108c | 4964 | |
0cf6dd15 | 4965 | int pc = 0; |
9c06b0b4 | 4966 | struct value *mark; |
fa4727a6 DJ |
4967 | struct value *new_val; |
4968 | ||
c1fc2657 | 4969 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4970 | /* Since we don't know the exact trigger address (from |
4971 | stopped_data_address), just tell the user we've triggered | |
4972 | a mask watchpoint. */ | |
4973 | return WP_VALUE_CHANGED; | |
4974 | ||
4975 | mark = value_mark (); | |
4d01a485 | 4976 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4977 | |
bb9d5f81 PP |
4978 | if (b->val_bitsize != 0) |
4979 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4980 | ||
4a64f543 MS |
4981 | /* We use value_equal_contents instead of value_equal because |
4982 | the latter coerces an array to a pointer, thus comparing just | |
4983 | the address of the array instead of its contents. This is | |
4984 | not what we want. */ | |
fa4727a6 | 4985 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4986 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4987 | { |
fa4727a6 DJ |
4988 | if (new_val != NULL) |
4989 | { | |
4990 | release_value (new_val); | |
4991 | value_free_to_mark (mark); | |
4992 | } | |
c906108c SS |
4993 | bs->old_val = b->val; |
4994 | b->val = new_val; | |
fa4727a6 | 4995 | b->val_valid = 1; |
c906108c SS |
4996 | return WP_VALUE_CHANGED; |
4997 | } | |
4998 | else | |
4999 | { | |
60e1c644 | 5000 | /* Nothing changed. */ |
c906108c | 5001 | value_free_to_mark (mark); |
c906108c SS |
5002 | return WP_VALUE_NOT_CHANGED; |
5003 | } | |
5004 | } | |
5005 | else | |
5006 | { | |
5007 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
5008 | if we temporarily ignored the watchpoint, then when |
5009 | we reenter the block in which it is valid it contains | |
5010 | garbage (in the case of a function, it may have two | |
5011 | garbage values, one before and one after the prologue). | |
5012 | So we can't even detect the first assignment to it and | |
5013 | watch after that (since the garbage may or may not equal | |
5014 | the first value assigned). */ | |
348d480f PA |
5015 | /* We print all the stop information in |
5016 | breakpoint_ops->print_it, but in this case, by the time we | |
5017 | call breakpoint_ops->print_it this bp will be deleted | |
5018 | already. So we have no choice but print the information | |
5019 | here. */ | |
468afe6c | 5020 | |
0e454242 | 5021 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
5022 | { |
5023 | struct ui_out *uiout = current_uiout; | |
5024 | ||
112e8700 SM |
5025 | if (uiout->is_mi_like_p ()) |
5026 | uiout->field_string | |
5027 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
5028 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 5029 | uiout->field_int ("wpnum", b->number); |
112e8700 | 5030 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
5031 | "which its expression is valid.\n"); |
5032 | } | |
4ce44c66 | 5033 | |
cdac0397 | 5034 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5035 | b->commands = NULL; |
d0fb5eae | 5036 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5037 | |
5038 | return WP_DELETED; | |
5039 | } | |
5040 | } | |
5041 | ||
18a18393 | 5042 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5043 | breakpoint location BL. This function does not check if we should |
5044 | stop, only if BL explains the stop. */ | |
5045 | ||
18a18393 | 5046 | static int |
6c95b8df | 5047 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5048 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5049 | const struct target_waitstatus *ws) |
18a18393 VP |
5050 | { |
5051 | struct breakpoint *b = bl->owner; | |
5052 | ||
348d480f | 5053 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5054 | gdb_assert (b != NULL); |
5055 | ||
bd522513 | 5056 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5057 | } |
5058 | ||
3a5c3e22 PA |
5059 | /* Determine if the watched values have actually changed, and we |
5060 | should stop. If not, set BS->stop to 0. */ | |
5061 | ||
18a18393 VP |
5062 | static void |
5063 | bpstat_check_watchpoint (bpstat bs) | |
5064 | { | |
2bdf28a0 | 5065 | const struct bp_location *bl; |
3a5c3e22 | 5066 | struct watchpoint *b; |
2bdf28a0 JK |
5067 | |
5068 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5069 | bl = bs->bp_location_at; |
2bdf28a0 | 5070 | gdb_assert (bl != NULL); |
3a5c3e22 | 5071 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5072 | gdb_assert (b != NULL); |
18a18393 | 5073 | |
18a18393 | 5074 | { |
18a18393 VP |
5075 | int must_check_value = 0; |
5076 | ||
c1fc2657 | 5077 | if (b->type == bp_watchpoint) |
18a18393 VP |
5078 | /* For a software watchpoint, we must always check the |
5079 | watched value. */ | |
5080 | must_check_value = 1; | |
5081 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5082 | /* We have a hardware watchpoint (read, write, or access) | |
5083 | and the target earlier reported an address watched by | |
5084 | this watchpoint. */ | |
5085 | must_check_value = 1; | |
5086 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5087 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5088 | /* We were stopped by a hardware watchpoint, but the target could |
5089 | not report the data address. We must check the watchpoint's | |
5090 | value. Access and read watchpoints are out of luck; without | |
5091 | a data address, we can't figure it out. */ | |
5092 | must_check_value = 1; | |
3a5c3e22 | 5093 | |
18a18393 VP |
5094 | if (must_check_value) |
5095 | { | |
bf469271 PA |
5096 | wp_check_result e; |
5097 | ||
5098 | TRY | |
5099 | { | |
5100 | e = watchpoint_check (bs); | |
5101 | } | |
5102 | CATCH (ex, RETURN_MASK_ALL) | |
5103 | { | |
5104 | exception_fprintf (gdb_stderr, ex, | |
5105 | "Error evaluating expression " | |
5106 | "for watchpoint %d\n", | |
5107 | b->number); | |
5108 | ||
5109 | SWITCH_THRU_ALL_UIS () | |
5110 | { | |
5111 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5112 | b->number); | |
5113 | } | |
5114 | watchpoint_del_at_next_stop (b); | |
5115 | e = WP_DELETED; | |
5116 | } | |
5117 | END_CATCH | |
5118 | ||
18a18393 VP |
5119 | switch (e) |
5120 | { | |
5121 | case WP_DELETED: | |
5122 | /* We've already printed what needs to be printed. */ | |
5123 | bs->print_it = print_it_done; | |
5124 | /* Stop. */ | |
5125 | break; | |
60e1c644 PA |
5126 | case WP_IGNORE: |
5127 | bs->print_it = print_it_noop; | |
5128 | bs->stop = 0; | |
5129 | break; | |
18a18393 | 5130 | case WP_VALUE_CHANGED: |
c1fc2657 | 5131 | if (b->type == bp_read_watchpoint) |
18a18393 | 5132 | { |
85d721b8 PA |
5133 | /* There are two cases to consider here: |
5134 | ||
4a64f543 | 5135 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5136 | In that case, trust the target, and always report |
5137 | the watchpoint hit to the user. Even though | |
5138 | reads don't cause value changes, the value may | |
5139 | have changed since the last time it was read, and | |
5140 | since we're not trapping writes, we will not see | |
5141 | those, and as such we should ignore our notion of | |
5142 | old value. | |
5143 | ||
4a64f543 | 5144 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5145 | reads and writes. There are two ways this may |
5146 | happen: | |
5147 | ||
4a64f543 | 5148 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5149 | reads only, but can break on accesses (reads or |
5150 | writes), such as e.g., x86. We detect this case | |
5151 | at the time we try to insert read watchpoints. | |
5152 | ||
4a64f543 | 5153 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5154 | watchpoints, but, the user set an access or write |
5155 | watchpoint watching the same memory as this read | |
5156 | watchpoint. | |
5157 | ||
5158 | If we're watching memory writes as well as reads, | |
5159 | ignore watchpoint hits when we find that the | |
5160 | value hasn't changed, as reads don't cause | |
5161 | changes. This still gives false positives when | |
5162 | the program writes the same value to memory as | |
5163 | what there was already in memory (we will confuse | |
5164 | it for a read), but it's much better than | |
5165 | nothing. */ | |
5166 | ||
5167 | int other_write_watchpoint = 0; | |
5168 | ||
5169 | if (bl->watchpoint_type == hw_read) | |
5170 | { | |
5171 | struct breakpoint *other_b; | |
5172 | ||
5173 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5174 | if (other_b->type == bp_hardware_watchpoint |
5175 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5176 | { |
3a5c3e22 PA |
5177 | struct watchpoint *other_w = |
5178 | (struct watchpoint *) other_b; | |
5179 | ||
5180 | if (other_w->watchpoint_triggered | |
5181 | == watch_triggered_yes) | |
5182 | { | |
5183 | other_write_watchpoint = 1; | |
5184 | break; | |
5185 | } | |
85d721b8 PA |
5186 | } |
5187 | } | |
5188 | ||
5189 | if (other_write_watchpoint | |
5190 | || bl->watchpoint_type == hw_access) | |
5191 | { | |
5192 | /* We're watching the same memory for writes, | |
5193 | and the value changed since the last time we | |
5194 | updated it, so this trap must be for a write. | |
5195 | Ignore it. */ | |
5196 | bs->print_it = print_it_noop; | |
5197 | bs->stop = 0; | |
5198 | } | |
18a18393 VP |
5199 | } |
5200 | break; | |
5201 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5202 | if (b->type == bp_hardware_watchpoint |
5203 | || b->type == bp_watchpoint) | |
18a18393 VP |
5204 | { |
5205 | /* Don't stop: write watchpoints shouldn't fire if | |
5206 | the value hasn't changed. */ | |
5207 | bs->print_it = print_it_noop; | |
5208 | bs->stop = 0; | |
5209 | } | |
5210 | /* Stop. */ | |
5211 | break; | |
5212 | default: | |
5213 | /* Can't happen. */ | |
18a18393 VP |
5214 | break; |
5215 | } | |
5216 | } | |
5217 | else /* must_check_value == 0 */ | |
5218 | { | |
5219 | /* This is a case where some watchpoint(s) triggered, but | |
5220 | not at the address of this watchpoint, or else no | |
5221 | watchpoint triggered after all. So don't print | |
5222 | anything for this watchpoint. */ | |
5223 | bs->print_it = print_it_noop; | |
5224 | bs->stop = 0; | |
5225 | } | |
5226 | } | |
5227 | } | |
5228 | ||
7d4df6a4 DE |
5229 | /* For breakpoints that are currently marked as telling gdb to stop, |
5230 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5231 | of breakpoint referred to by BS. If we should not stop for this |
5232 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5233 | |
18a18393 VP |
5234 | static void |
5235 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5236 | { | |
2bdf28a0 JK |
5237 | const struct bp_location *bl; |
5238 | struct breakpoint *b; | |
bf469271 PA |
5239 | /* Assume stop. */ |
5240 | bool condition_result = true; | |
7d4df6a4 DE |
5241 | struct expression *cond; |
5242 | ||
5243 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5244 | |
5245 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5246 | bl = bs->bp_location_at; |
2bdf28a0 | 5247 | gdb_assert (bl != NULL); |
f431efe5 | 5248 | b = bs->breakpoint_at; |
2bdf28a0 | 5249 | gdb_assert (b != NULL); |
18a18393 | 5250 | |
b775012e LM |
5251 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5252 | need to do so again since GDB does not know if we stopped due to a | |
5253 | breakpoint or a single step breakpoint. */ | |
5254 | ||
18a18393 | 5255 | if (frame_id_p (b->frame_id) |
edb3359d | 5256 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5257 | { |
7d4df6a4 DE |
5258 | bs->stop = 0; |
5259 | return; | |
5260 | } | |
60e1c644 | 5261 | |
12ab52e9 PA |
5262 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5263 | evaluating the condition if this isn't the specified | |
5264 | thread/task. */ | |
5d5658a1 | 5265 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5266 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5267 | ||
6c1b0f7b DE |
5268 | { |
5269 | bs->stop = 0; | |
5270 | return; | |
5271 | } | |
5272 | ||
6dddc817 DE |
5273 | /* Evaluate extension language breakpoints that have a "stop" method |
5274 | implemented. */ | |
5275 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5276 | |
7d4df6a4 DE |
5277 | if (is_watchpoint (b)) |
5278 | { | |
5279 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5280 | |
4d01a485 | 5281 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5282 | } |
5283 | else | |
4d01a485 | 5284 | cond = bl->cond.get (); |
60e1c644 | 5285 | |
7d4df6a4 DE |
5286 | if (cond && b->disposition != disp_del_at_next_stop) |
5287 | { | |
5288 | int within_current_scope = 1; | |
5289 | struct watchpoint * w; | |
60e1c644 | 5290 | |
7d4df6a4 DE |
5291 | /* We use value_mark and value_free_to_mark because it could |
5292 | be a long time before we return to the command level and | |
5293 | call free_all_values. We can't call free_all_values | |
5294 | because we might be in the middle of evaluating a | |
5295 | function call. */ | |
5296 | struct value *mark = value_mark (); | |
5297 | ||
5298 | if (is_watchpoint (b)) | |
5299 | w = (struct watchpoint *) b; | |
5300 | else | |
5301 | w = NULL; | |
5302 | ||
5303 | /* Need to select the frame, with all that implies so that | |
5304 | the conditions will have the right context. Because we | |
5305 | use the frame, we will not see an inlined function's | |
5306 | variables when we arrive at a breakpoint at the start | |
5307 | of the inlined function; the current frame will be the | |
5308 | call site. */ | |
5309 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5310 | select_frame (get_current_frame ()); | |
5311 | else | |
18a18393 | 5312 | { |
7d4df6a4 DE |
5313 | struct frame_info *frame; |
5314 | ||
5315 | /* For local watchpoint expressions, which particular | |
5316 | instance of a local is being watched matters, so we | |
5317 | keep track of the frame to evaluate the expression | |
5318 | in. To evaluate the condition however, it doesn't | |
5319 | really matter which instantiation of the function | |
5320 | where the condition makes sense triggers the | |
5321 | watchpoint. This allows an expression like "watch | |
5322 | global if q > 10" set in `func', catch writes to | |
5323 | global on all threads that call `func', or catch | |
5324 | writes on all recursive calls of `func' by a single | |
5325 | thread. We simply always evaluate the condition in | |
5326 | the innermost frame that's executing where it makes | |
5327 | sense to evaluate the condition. It seems | |
5328 | intuitive. */ | |
5329 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5330 | if (frame != NULL) | |
5331 | select_frame (frame); | |
5332 | else | |
5333 | within_current_scope = 0; | |
18a18393 | 5334 | } |
7d4df6a4 | 5335 | if (within_current_scope) |
bf469271 PA |
5336 | { |
5337 | TRY | |
5338 | { | |
5339 | condition_result = breakpoint_cond_eval (cond); | |
5340 | } | |
5341 | CATCH (ex, RETURN_MASK_ALL) | |
5342 | { | |
5343 | exception_fprintf (gdb_stderr, ex, | |
5344 | "Error in testing breakpoint condition:\n"); | |
5345 | } | |
5346 | END_CATCH | |
5347 | } | |
7d4df6a4 | 5348 | else |
18a18393 | 5349 | { |
7d4df6a4 DE |
5350 | warning (_("Watchpoint condition cannot be tested " |
5351 | "in the current scope")); | |
5352 | /* If we failed to set the right context for this | |
5353 | watchpoint, unconditionally report it. */ | |
18a18393 | 5354 | } |
7d4df6a4 DE |
5355 | /* FIXME-someday, should give breakpoint #. */ |
5356 | value_free_to_mark (mark); | |
18a18393 | 5357 | } |
7d4df6a4 | 5358 | |
bf469271 | 5359 | if (cond && !condition_result) |
7d4df6a4 DE |
5360 | { |
5361 | bs->stop = 0; | |
5362 | } | |
7d4df6a4 DE |
5363 | else if (b->ignore_count > 0) |
5364 | { | |
5365 | b->ignore_count--; | |
5366 | bs->stop = 0; | |
5367 | /* Increase the hit count even though we don't stop. */ | |
5368 | ++(b->hit_count); | |
5369 | observer_notify_breakpoint_modified (b); | |
5370 | } | |
18a18393 VP |
5371 | } |
5372 | ||
1cf4d951 PA |
5373 | /* Returns true if we need to track moribund locations of LOC's type |
5374 | on the current target. */ | |
5375 | ||
5376 | static int | |
5377 | need_moribund_for_location_type (struct bp_location *loc) | |
5378 | { | |
5379 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5380 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5381 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5382 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5383 | } | |
5384 | ||
18a18393 | 5385 | |
9709f61c | 5386 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5387 | BP_ADDR in thread PTID. |
c906108c | 5388 | |
d983da9c | 5389 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5390 | don't understand this stop. Result is a chain of bpstat's such |
5391 | that: | |
c906108c | 5392 | |
c5aa993b | 5393 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5394 | |
c5aa993b | 5395 | if we understand why we stopped, the result is not null. |
c906108c | 5396 | |
c5aa993b JM |
5397 | Each element of the chain refers to a particular breakpoint or |
5398 | watchpoint at which we have stopped. (We may have stopped for | |
5399 | several reasons concurrently.) | |
c906108c | 5400 | |
c5aa993b JM |
5401 | Each element of the chain has valid next, breakpoint_at, |
5402 | commands, FIXME??? fields. */ | |
c906108c SS |
5403 | |
5404 | bpstat | |
accd0bcd | 5405 | bpstat_stop_status (const address_space *aspace, |
09ac7c10 TT |
5406 | CORE_ADDR bp_addr, ptid_t ptid, |
5407 | const struct target_waitstatus *ws) | |
c906108c | 5408 | { |
0d381245 | 5409 | struct breakpoint *b = NULL; |
afe38095 | 5410 | struct bp_location *bl; |
20874c92 | 5411 | struct bp_location *loc; |
5760d0ab JK |
5412 | /* First item of allocated bpstat's. */ |
5413 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5414 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5415 | bpstat bs; |
20874c92 | 5416 | int ix; |
429374b8 | 5417 | int need_remove_insert; |
f431efe5 | 5418 | int removed_any; |
c906108c | 5419 | |
f431efe5 PA |
5420 | /* First, build the bpstat chain with locations that explain a |
5421 | target stop, while being careful to not set the target running, | |
5422 | as that may invalidate locations (in particular watchpoint | |
5423 | locations are recreated). Resuming will happen here with | |
5424 | breakpoint conditions or watchpoint expressions that include | |
5425 | inferior function calls. */ | |
c5aa993b | 5426 | |
429374b8 JK |
5427 | ALL_BREAKPOINTS (b) |
5428 | { | |
1a853c52 | 5429 | if (!breakpoint_enabled (b)) |
429374b8 | 5430 | continue; |
a5606eee | 5431 | |
429374b8 JK |
5432 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5433 | { | |
4a64f543 MS |
5434 | /* For hardware watchpoints, we look only at the first |
5435 | location. The watchpoint_check function will work on the | |
5436 | entire expression, not the individual locations. For | |
5437 | read watchpoints, the watchpoints_triggered function has | |
5438 | checked all locations already. */ | |
429374b8 JK |
5439 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5440 | break; | |
18a18393 | 5441 | |
f6592439 | 5442 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5443 | continue; |
c5aa993b | 5444 | |
09ac7c10 | 5445 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5446 | continue; |
c5aa993b | 5447 | |
4a64f543 MS |
5448 | /* Come here if it's a watchpoint, or if the break address |
5449 | matches. */ | |
c5aa993b | 5450 | |
04afa70c | 5451 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5452 | explain stop. */ |
c5aa993b | 5453 | |
f431efe5 PA |
5454 | /* Assume we stop. Should we find a watchpoint that is not |
5455 | actually triggered, or if the condition of the breakpoint | |
5456 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5457 | bs->stop = 1; |
5458 | bs->print = 1; | |
d983da9c | 5459 | |
f431efe5 PA |
5460 | /* If this is a scope breakpoint, mark the associated |
5461 | watchpoint as triggered so that we will handle the | |
5462 | out-of-scope event. We'll get to the watchpoint next | |
5463 | iteration. */ | |
d0fb5eae | 5464 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5465 | { |
5466 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5467 | ||
5468 | w->watchpoint_triggered = watch_triggered_yes; | |
5469 | } | |
f431efe5 PA |
5470 | } |
5471 | } | |
5472 | ||
7c16b83e | 5473 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5474 | if (!target_supports_stopped_by_sw_breakpoint () |
5475 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5476 | { |
1cf4d951 | 5477 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5478 | { |
1cf4d951 PA |
5479 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5480 | && need_moribund_for_location_type (loc)) | |
5481 | { | |
04afa70c | 5482 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5483 | /* For hits of moribund locations, we should just proceed. */ |
5484 | bs->stop = 0; | |
5485 | bs->print = 0; | |
5486 | bs->print_it = print_it_noop; | |
5487 | } | |
f431efe5 PA |
5488 | } |
5489 | } | |
5490 | ||
edcc5120 TT |
5491 | /* A bit of special processing for shlib breakpoints. We need to |
5492 | process solib loading here, so that the lists of loaded and | |
5493 | unloaded libraries are correct before we handle "catch load" and | |
5494 | "catch unload". */ | |
5495 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5496 | { | |
5d268276 | 5497 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5498 | { |
5499 | handle_solib_event (); | |
5500 | break; | |
5501 | } | |
5502 | } | |
5503 | ||
f431efe5 PA |
5504 | /* Now go through the locations that caused the target to stop, and |
5505 | check whether we're interested in reporting this stop to higher | |
5506 | layers, or whether we should resume the target transparently. */ | |
5507 | ||
5508 | removed_any = 0; | |
5509 | ||
5760d0ab | 5510 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5511 | { |
5512 | if (!bs->stop) | |
5513 | continue; | |
5514 | ||
f431efe5 | 5515 | b = bs->breakpoint_at; |
348d480f PA |
5516 | b->ops->check_status (bs); |
5517 | if (bs->stop) | |
28010a5d | 5518 | { |
348d480f | 5519 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5520 | |
429374b8 JK |
5521 | if (bs->stop) |
5522 | { | |
5523 | ++(b->hit_count); | |
8d3788bd | 5524 | observer_notify_breakpoint_modified (b); |
c906108c | 5525 | |
4a64f543 | 5526 | /* We will stop here. */ |
429374b8 JK |
5527 | if (b->disposition == disp_disable) |
5528 | { | |
816338b5 | 5529 | --(b->enable_count); |
1a853c52 | 5530 | if (b->enable_count <= 0) |
429374b8 | 5531 | b->enable_state = bp_disabled; |
f431efe5 | 5532 | removed_any = 1; |
429374b8 JK |
5533 | } |
5534 | if (b->silent) | |
5535 | bs->print = 0; | |
5536 | bs->commands = b->commands; | |
abf85f46 | 5537 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5538 | ? bs->commands.get () : NULL)) |
abf85f46 | 5539 | bs->print = 0; |
9d6e6e84 HZ |
5540 | |
5541 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5542 | } |
5543 | ||
348d480f | 5544 | } |
a9b3a50f PA |
5545 | |
5546 | /* Print nothing for this entry if we don't stop or don't | |
5547 | print. */ | |
5548 | if (!bs->stop || !bs->print) | |
5549 | bs->print_it = print_it_noop; | |
429374b8 | 5550 | } |
876fa593 | 5551 | |
d983da9c DJ |
5552 | /* If we aren't stopping, the value of some hardware watchpoint may |
5553 | not have changed, but the intermediate memory locations we are | |
5554 | watching may have. Don't bother if we're stopping; this will get | |
5555 | done later. */ | |
d832cb68 | 5556 | need_remove_insert = 0; |
5760d0ab JK |
5557 | if (! bpstat_causes_stop (bs_head)) |
5558 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5559 | if (!bs->stop |
f431efe5 PA |
5560 | && bs->breakpoint_at |
5561 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5562 | { |
3a5c3e22 PA |
5563 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5564 | ||
5565 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5566 | need_remove_insert = 1; |
d983da9c DJ |
5567 | } |
5568 | ||
d832cb68 | 5569 | if (need_remove_insert) |
44702360 | 5570 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5571 | else if (removed_any) |
44702360 | 5572 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5573 | |
5760d0ab | 5574 | return bs_head; |
c906108c | 5575 | } |
628fe4e4 JK |
5576 | |
5577 | static void | |
5578 | handle_jit_event (void) | |
5579 | { | |
5580 | struct frame_info *frame; | |
5581 | struct gdbarch *gdbarch; | |
5582 | ||
243a9253 PA |
5583 | if (debug_infrun) |
5584 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5585 | ||
628fe4e4 JK |
5586 | /* Switch terminal for any messages produced by |
5587 | breakpoint_re_set. */ | |
223ffa71 | 5588 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5589 | |
5590 | frame = get_current_frame (); | |
5591 | gdbarch = get_frame_arch (frame); | |
5592 | ||
5593 | jit_event_handler (gdbarch); | |
5594 | ||
223ffa71 | 5595 | target_terminal::inferior (); |
628fe4e4 JK |
5596 | } |
5597 | ||
5598 | /* Prepare WHAT final decision for infrun. */ | |
5599 | ||
5600 | /* Decide what infrun needs to do with this bpstat. */ | |
5601 | ||
c906108c | 5602 | struct bpstat_what |
0e30163f | 5603 | bpstat_what (bpstat bs_head) |
c906108c | 5604 | { |
c906108c | 5605 | struct bpstat_what retval; |
0e30163f | 5606 | bpstat bs; |
c906108c | 5607 | |
628fe4e4 | 5608 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5609 | retval.call_dummy = STOP_NONE; |
186c406b | 5610 | retval.is_longjmp = 0; |
628fe4e4 | 5611 | |
0e30163f | 5612 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5613 | { |
628fe4e4 JK |
5614 | /* Extract this BS's action. After processing each BS, we check |
5615 | if its action overrides all we've seem so far. */ | |
5616 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5617 | enum bptype bptype; | |
5618 | ||
c906108c | 5619 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5620 | { |
5621 | /* I suspect this can happen if it was a momentary | |
5622 | breakpoint which has since been deleted. */ | |
5623 | bptype = bp_none; | |
5624 | } | |
20874c92 | 5625 | else |
f431efe5 | 5626 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5627 | |
5628 | switch (bptype) | |
c906108c SS |
5629 | { |
5630 | case bp_none: | |
628fe4e4 | 5631 | break; |
c906108c SS |
5632 | case bp_breakpoint: |
5633 | case bp_hardware_breakpoint: | |
7c16b83e | 5634 | case bp_single_step: |
c906108c SS |
5635 | case bp_until: |
5636 | case bp_finish: | |
a9b3a50f | 5637 | case bp_shlib_event: |
c906108c SS |
5638 | if (bs->stop) |
5639 | { | |
5640 | if (bs->print) | |
628fe4e4 | 5641 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5642 | else |
628fe4e4 | 5643 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5644 | } |
5645 | else | |
628fe4e4 | 5646 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5647 | break; |
5648 | case bp_watchpoint: | |
5649 | case bp_hardware_watchpoint: | |
5650 | case bp_read_watchpoint: | |
5651 | case bp_access_watchpoint: | |
5652 | if (bs->stop) | |
5653 | { | |
5654 | if (bs->print) | |
628fe4e4 | 5655 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5656 | else |
628fe4e4 | 5657 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5658 | } |
5659 | else | |
628fe4e4 JK |
5660 | { |
5661 | /* There was a watchpoint, but we're not stopping. | |
5662 | This requires no further action. */ | |
5663 | } | |
c906108c SS |
5664 | break; |
5665 | case bp_longjmp: | |
e2e4d78b | 5666 | case bp_longjmp_call_dummy: |
186c406b | 5667 | case bp_exception: |
0a39bb32 PA |
5668 | if (bs->stop) |
5669 | { | |
5670 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5671 | retval.is_longjmp = bptype != bp_exception; | |
5672 | } | |
5673 | else | |
5674 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5675 | break; |
5676 | case bp_longjmp_resume: | |
186c406b | 5677 | case bp_exception_resume: |
0a39bb32 PA |
5678 | if (bs->stop) |
5679 | { | |
5680 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5681 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5682 | } | |
5683 | else | |
5684 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5685 | break; |
5686 | case bp_step_resume: | |
5687 | if (bs->stop) | |
628fe4e4 JK |
5688 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5689 | else | |
c906108c | 5690 | { |
628fe4e4 JK |
5691 | /* It is for the wrong frame. */ |
5692 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5693 | } |
c906108c | 5694 | break; |
2c03e5be PA |
5695 | case bp_hp_step_resume: |
5696 | if (bs->stop) | |
5697 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5698 | else | |
5699 | { | |
5700 | /* It is for the wrong frame. */ | |
5701 | this_action = BPSTAT_WHAT_SINGLE; | |
5702 | } | |
5703 | break; | |
c906108c | 5704 | case bp_watchpoint_scope: |
c4093a6a | 5705 | case bp_thread_event: |
1900040c | 5706 | case bp_overlay_event: |
0fd8e87f | 5707 | case bp_longjmp_master: |
aa7d318d | 5708 | case bp_std_terminate_master: |
186c406b | 5709 | case bp_exception_master: |
628fe4e4 | 5710 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5711 | break; |
ce78b96d | 5712 | case bp_catchpoint: |
c5aa993b JM |
5713 | if (bs->stop) |
5714 | { | |
5715 | if (bs->print) | |
628fe4e4 | 5716 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5717 | else |
628fe4e4 | 5718 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5719 | } |
5720 | else | |
628fe4e4 JK |
5721 | { |
5722 | /* There was a catchpoint, but we're not stopping. | |
5723 | This requires no further action. */ | |
5724 | } | |
5725 | break; | |
628fe4e4 | 5726 | case bp_jit_event: |
628fe4e4 | 5727 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5728 | break; |
c906108c | 5729 | case bp_call_dummy: |
53a5351d JM |
5730 | /* Make sure the action is stop (silent or noisy), |
5731 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5732 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5733 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5734 | break; |
5735 | case bp_std_terminate: | |
5736 | /* Make sure the action is stop (silent or noisy), | |
5737 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5738 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5739 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5740 | break; |
1042e4c0 | 5741 | case bp_tracepoint: |
7a697b8d | 5742 | case bp_fast_tracepoint: |
0fb4aa4b | 5743 | case bp_static_tracepoint: |
1042e4c0 SS |
5744 | /* Tracepoint hits should not be reported back to GDB, and |
5745 | if one got through somehow, it should have been filtered | |
5746 | out already. */ | |
5747 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5748 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5749 | break; |
5750 | case bp_gnu_ifunc_resolver: | |
5751 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5752 | this_action = BPSTAT_WHAT_SINGLE; | |
5753 | break; | |
5754 | case bp_gnu_ifunc_resolver_return: | |
5755 | /* The breakpoint will be removed, execution will restart from the | |
5756 | PC of the former breakpoint. */ | |
5757 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5758 | break; | |
e7e0cddf SS |
5759 | |
5760 | case bp_dprintf: | |
a11cfd87 HZ |
5761 | if (bs->stop) |
5762 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5763 | else | |
5764 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5765 | break; |
5766 | ||
628fe4e4 JK |
5767 | default: |
5768 | internal_error (__FILE__, __LINE__, | |
5769 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5770 | } |
628fe4e4 | 5771 | |
325fac50 | 5772 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5773 | } |
628fe4e4 | 5774 | |
243a9253 PA |
5775 | return retval; |
5776 | } | |
628fe4e4 | 5777 | |
243a9253 PA |
5778 | void |
5779 | bpstat_run_callbacks (bpstat bs_head) | |
5780 | { | |
5781 | bpstat bs; | |
628fe4e4 | 5782 | |
0e30163f JK |
5783 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5784 | { | |
5785 | struct breakpoint *b = bs->breakpoint_at; | |
5786 | ||
5787 | if (b == NULL) | |
5788 | continue; | |
5789 | switch (b->type) | |
5790 | { | |
243a9253 PA |
5791 | case bp_jit_event: |
5792 | handle_jit_event (); | |
5793 | break; | |
0e30163f JK |
5794 | case bp_gnu_ifunc_resolver: |
5795 | gnu_ifunc_resolver_stop (b); | |
5796 | break; | |
5797 | case bp_gnu_ifunc_resolver_return: | |
5798 | gnu_ifunc_resolver_return_stop (b); | |
5799 | break; | |
5800 | } | |
5801 | } | |
c906108c SS |
5802 | } |
5803 | ||
5804 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5805 | without hardware support). This isn't related to a specific bpstat, | |
5806 | just to things like whether watchpoints are set. */ | |
5807 | ||
c5aa993b | 5808 | int |
fba45db2 | 5809 | bpstat_should_step (void) |
c906108c SS |
5810 | { |
5811 | struct breakpoint *b; | |
cc59ec59 | 5812 | |
c906108c | 5813 | ALL_BREAKPOINTS (b) |
717a8278 | 5814 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5815 | return 1; |
c906108c SS |
5816 | return 0; |
5817 | } | |
5818 | ||
67822962 PA |
5819 | int |
5820 | bpstat_causes_stop (bpstat bs) | |
5821 | { | |
5822 | for (; bs != NULL; bs = bs->next) | |
5823 | if (bs->stop) | |
5824 | return 1; | |
5825 | ||
5826 | return 0; | |
5827 | } | |
5828 | ||
c906108c | 5829 | \f |
c5aa993b | 5830 | |
170b53b2 UW |
5831 | /* Compute a string of spaces suitable to indent the next line |
5832 | so it starts at the position corresponding to the table column | |
5833 | named COL_NAME in the currently active table of UIOUT. */ | |
5834 | ||
5835 | static char * | |
5836 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5837 | { | |
5838 | static char wrap_indent[80]; | |
5839 | int i, total_width, width, align; | |
c5209615 | 5840 | const char *text; |
170b53b2 UW |
5841 | |
5842 | total_width = 0; | |
112e8700 | 5843 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5844 | { |
5845 | if (strcmp (text, col_name) == 0) | |
5846 | { | |
5847 | gdb_assert (total_width < sizeof wrap_indent); | |
5848 | memset (wrap_indent, ' ', total_width); | |
5849 | wrap_indent[total_width] = 0; | |
5850 | ||
5851 | return wrap_indent; | |
5852 | } | |
5853 | ||
5854 | total_width += width + 1; | |
5855 | } | |
5856 | ||
5857 | return NULL; | |
5858 | } | |
5859 | ||
b775012e LM |
5860 | /* Determine if the locations of this breakpoint will have their conditions |
5861 | evaluated by the target, host or a mix of both. Returns the following: | |
5862 | ||
5863 | "host": Host evals condition. | |
5864 | "host or target": Host or Target evals condition. | |
5865 | "target": Target evals condition. | |
5866 | */ | |
5867 | ||
5868 | static const char * | |
5869 | bp_condition_evaluator (struct breakpoint *b) | |
5870 | { | |
5871 | struct bp_location *bl; | |
5872 | char host_evals = 0; | |
5873 | char target_evals = 0; | |
5874 | ||
5875 | if (!b) | |
5876 | return NULL; | |
5877 | ||
5878 | if (!is_breakpoint (b)) | |
5879 | return NULL; | |
5880 | ||
5881 | if (gdb_evaluates_breakpoint_condition_p () | |
5882 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5883 | return condition_evaluation_host; | |
5884 | ||
5885 | for (bl = b->loc; bl; bl = bl->next) | |
5886 | { | |
5887 | if (bl->cond_bytecode) | |
5888 | target_evals++; | |
5889 | else | |
5890 | host_evals++; | |
5891 | } | |
5892 | ||
5893 | if (host_evals && target_evals) | |
5894 | return condition_evaluation_both; | |
5895 | else if (target_evals) | |
5896 | return condition_evaluation_target; | |
5897 | else | |
5898 | return condition_evaluation_host; | |
5899 | } | |
5900 | ||
5901 | /* Determine the breakpoint location's condition evaluator. This is | |
5902 | similar to bp_condition_evaluator, but for locations. */ | |
5903 | ||
5904 | static const char * | |
5905 | bp_location_condition_evaluator (struct bp_location *bl) | |
5906 | { | |
5907 | if (bl && !is_breakpoint (bl->owner)) | |
5908 | return NULL; | |
5909 | ||
5910 | if (gdb_evaluates_breakpoint_condition_p () | |
5911 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5912 | return condition_evaluation_host; | |
5913 | ||
5914 | if (bl && bl->cond_bytecode) | |
5915 | return condition_evaluation_target; | |
5916 | else | |
5917 | return condition_evaluation_host; | |
5918 | } | |
5919 | ||
859825b8 JK |
5920 | /* Print the LOC location out of the list of B->LOC locations. */ |
5921 | ||
170b53b2 UW |
5922 | static void |
5923 | print_breakpoint_location (struct breakpoint *b, | |
5924 | struct bp_location *loc) | |
0d381245 | 5925 | { |
79a45e25 | 5926 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5927 | |
5928 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5929 | |
859825b8 JK |
5930 | if (loc != NULL && loc->shlib_disabled) |
5931 | loc = NULL; | |
5932 | ||
6c95b8df PA |
5933 | if (loc != NULL) |
5934 | set_current_program_space (loc->pspace); | |
5935 | ||
56435ebe | 5936 | if (b->display_canonical) |
d28cd78a | 5937 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5938 | else if (loc && loc->symtab) |
0d381245 | 5939 | { |
4a27f119 KS |
5940 | const struct symbol *sym = loc->symbol; |
5941 | ||
5942 | if (sym == NULL) | |
5943 | sym = find_pc_sect_function (loc->address, loc->section); | |
5944 | ||
0d381245 VP |
5945 | if (sym) |
5946 | { | |
112e8700 SM |
5947 | uiout->text ("in "); |
5948 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5949 | uiout->text (" "); | |
5950 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5951 | uiout->text ("at "); | |
0d381245 | 5952 | } |
112e8700 | 5953 | uiout->field_string ("file", |
05cba821 | 5954 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5955 | uiout->text (":"); |
05cba821 | 5956 | |
112e8700 SM |
5957 | if (uiout->is_mi_like_p ()) |
5958 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5959 | |
112e8700 | 5960 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5961 | } |
859825b8 | 5962 | else if (loc) |
0d381245 | 5963 | { |
d7e74731 | 5964 | string_file stb; |
170b53b2 | 5965 | |
d7e74731 | 5966 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5967 | demangle, ""); |
112e8700 | 5968 | uiout->field_stream ("at", stb); |
0d381245 | 5969 | } |
859825b8 | 5970 | else |
f00aae0f | 5971 | { |
d28cd78a TT |
5972 | uiout->field_string ("pending", |
5973 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5974 | /* If extra_string is available, it could be holding a condition |
5975 | or dprintf arguments. In either case, make sure it is printed, | |
5976 | too, but only for non-MI streams. */ | |
112e8700 | 5977 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5978 | { |
5979 | if (b->type == bp_dprintf) | |
112e8700 | 5980 | uiout->text (","); |
f00aae0f | 5981 | else |
112e8700 SM |
5982 | uiout->text (" "); |
5983 | uiout->text (b->extra_string); | |
f00aae0f KS |
5984 | } |
5985 | } | |
6c95b8df | 5986 | |
b775012e LM |
5987 | if (loc && is_breakpoint (b) |
5988 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5989 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5990 | { | |
112e8700 SM |
5991 | uiout->text (" ("); |
5992 | uiout->field_string ("evaluated-by", | |
b775012e | 5993 | bp_location_condition_evaluator (loc)); |
112e8700 | 5994 | uiout->text (")"); |
b775012e | 5995 | } |
0d381245 VP |
5996 | } |
5997 | ||
269b11a2 PA |
5998 | static const char * |
5999 | bptype_string (enum bptype type) | |
c906108c | 6000 | { |
c4093a6a JM |
6001 | struct ep_type_description |
6002 | { | |
6003 | enum bptype type; | |
a121b7c1 | 6004 | const char *description; |
c4093a6a JM |
6005 | }; |
6006 | static struct ep_type_description bptypes[] = | |
c906108c | 6007 | { |
c5aa993b JM |
6008 | {bp_none, "?deleted?"}, |
6009 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6010 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6011 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6012 | {bp_until, "until"}, |
6013 | {bp_finish, "finish"}, | |
6014 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6015 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6016 | {bp_read_watchpoint, "read watchpoint"}, |
6017 | {bp_access_watchpoint, "acc watchpoint"}, | |
6018 | {bp_longjmp, "longjmp"}, | |
6019 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6020 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6021 | {bp_exception, "exception"}, |
6022 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6023 | {bp_step_resume, "step resume"}, |
2c03e5be | 6024 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6025 | {bp_watchpoint_scope, "watchpoint scope"}, |
6026 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6027 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6028 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6029 | {bp_thread_event, "thread events"}, |
1900040c | 6030 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6031 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6032 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6033 | {bp_exception_master, "exception master"}, |
ce78b96d | 6034 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6035 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6036 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6037 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6038 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6039 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6040 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6041 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6042 | }; |
269b11a2 PA |
6043 | |
6044 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6045 | || ((int) type != bptypes[(int) type].type)) | |
6046 | internal_error (__FILE__, __LINE__, | |
6047 | _("bptypes table does not describe type #%d."), | |
6048 | (int) type); | |
6049 | ||
6050 | return bptypes[(int) type].description; | |
6051 | } | |
6052 | ||
998580f1 MK |
6053 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6054 | For CLI, prefix the list with the string 'inf'. */ | |
6055 | ||
6056 | static void | |
6057 | output_thread_groups (struct ui_out *uiout, | |
6058 | const char *field_name, | |
6059 | VEC(int) *inf_num, | |
6060 | int mi_only) | |
6061 | { | |
112e8700 | 6062 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6063 | int inf; |
6064 | int i; | |
6065 | ||
6066 | /* For backward compatibility, don't display inferiors in CLI unless | |
6067 | there are several. Always display them for MI. */ | |
6068 | if (!is_mi && mi_only) | |
6069 | return; | |
6070 | ||
10f489e5 | 6071 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6072 | |
998580f1 MK |
6073 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6074 | { | |
6075 | if (is_mi) | |
6076 | { | |
6077 | char mi_group[10]; | |
6078 | ||
6079 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
112e8700 | 6080 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6081 | } |
6082 | else | |
6083 | { | |
6084 | if (i == 0) | |
112e8700 | 6085 | uiout->text (" inf "); |
998580f1 | 6086 | else |
112e8700 | 6087 | uiout->text (", "); |
998580f1 | 6088 | |
112e8700 | 6089 | uiout->text (plongest (inf)); |
998580f1 MK |
6090 | } |
6091 | } | |
998580f1 MK |
6092 | } |
6093 | ||
269b11a2 PA |
6094 | /* Print B to gdb_stdout. */ |
6095 | ||
6096 | static void | |
6097 | print_one_breakpoint_location (struct breakpoint *b, | |
6098 | struct bp_location *loc, | |
6099 | int loc_number, | |
6100 | struct bp_location **last_loc, | |
269b11a2 PA |
6101 | int allflag) |
6102 | { | |
6103 | struct command_line *l; | |
c2c6d25f | 6104 | static char bpenables[] = "nynny"; |
c906108c | 6105 | |
79a45e25 | 6106 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6107 | int header_of_multiple = 0; |
6108 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6109 | struct value_print_options opts; |
6110 | ||
6111 | get_user_print_options (&opts); | |
0d381245 VP |
6112 | |
6113 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6114 | /* See comment in print_one_breakpoint concerning treatment of |
6115 | breakpoints with single disabled location. */ | |
0d381245 VP |
6116 | if (loc == NULL |
6117 | && (b->loc != NULL | |
6118 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6119 | header_of_multiple = 1; | |
6120 | if (loc == NULL) | |
6121 | loc = b->loc; | |
6122 | ||
c4093a6a JM |
6123 | annotate_record (); |
6124 | ||
6125 | /* 1 */ | |
6126 | annotate_field (0); | |
0d381245 VP |
6127 | if (part_of_multiple) |
6128 | { | |
6129 | char *formatted; | |
0c6773c1 | 6130 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6131 | uiout->field_string ("number", formatted); |
0d381245 VP |
6132 | xfree (formatted); |
6133 | } | |
6134 | else | |
6135 | { | |
112e8700 | 6136 | uiout->field_int ("number", b->number); |
0d381245 | 6137 | } |
c4093a6a JM |
6138 | |
6139 | /* 2 */ | |
6140 | annotate_field (1); | |
0d381245 | 6141 | if (part_of_multiple) |
112e8700 | 6142 | uiout->field_skip ("type"); |
269b11a2 | 6143 | else |
112e8700 | 6144 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6145 | |
6146 | /* 3 */ | |
6147 | annotate_field (2); | |
0d381245 | 6148 | if (part_of_multiple) |
112e8700 | 6149 | uiout->field_skip ("disp"); |
0d381245 | 6150 | else |
112e8700 | 6151 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6152 | |
c4093a6a JM |
6153 | |
6154 | /* 4 */ | |
6155 | annotate_field (3); | |
0d381245 | 6156 | if (part_of_multiple) |
112e8700 | 6157 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6158 | else |
112e8700 SM |
6159 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6160 | uiout->spaces (2); | |
0d381245 | 6161 | |
c4093a6a JM |
6162 | |
6163 | /* 5 and 6 */ | |
3086aeae | 6164 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6165 | { |
4a64f543 MS |
6166 | /* Although the print_one can possibly print all locations, |
6167 | calling it here is not likely to get any nice result. So, | |
6168 | make sure there's just one location. */ | |
0d381245 | 6169 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6170 | b->ops->print_one (b, last_loc); |
0d381245 | 6171 | } |
3086aeae DJ |
6172 | else |
6173 | switch (b->type) | |
6174 | { | |
6175 | case bp_none: | |
6176 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6177 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6178 | break; |
c906108c | 6179 | |
3086aeae DJ |
6180 | case bp_watchpoint: |
6181 | case bp_hardware_watchpoint: | |
6182 | case bp_read_watchpoint: | |
6183 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6184 | { |
6185 | struct watchpoint *w = (struct watchpoint *) b; | |
6186 | ||
6187 | /* Field 4, the address, is omitted (which makes the columns | |
6188 | not line up too nicely with the headers, but the effect | |
6189 | is relatively readable). */ | |
6190 | if (opts.addressprint) | |
112e8700 | 6191 | uiout->field_skip ("addr"); |
3a5c3e22 | 6192 | annotate_field (5); |
112e8700 | 6193 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6194 | } |
3086aeae DJ |
6195 | break; |
6196 | ||
3086aeae DJ |
6197 | case bp_breakpoint: |
6198 | case bp_hardware_breakpoint: | |
7c16b83e | 6199 | case bp_single_step: |
3086aeae DJ |
6200 | case bp_until: |
6201 | case bp_finish: | |
6202 | case bp_longjmp: | |
6203 | case bp_longjmp_resume: | |
e2e4d78b | 6204 | case bp_longjmp_call_dummy: |
186c406b TT |
6205 | case bp_exception: |
6206 | case bp_exception_resume: | |
3086aeae | 6207 | case bp_step_resume: |
2c03e5be | 6208 | case bp_hp_step_resume: |
3086aeae DJ |
6209 | case bp_watchpoint_scope: |
6210 | case bp_call_dummy: | |
aa7d318d | 6211 | case bp_std_terminate: |
3086aeae DJ |
6212 | case bp_shlib_event: |
6213 | case bp_thread_event: | |
6214 | case bp_overlay_event: | |
0fd8e87f | 6215 | case bp_longjmp_master: |
aa7d318d | 6216 | case bp_std_terminate_master: |
186c406b | 6217 | case bp_exception_master: |
1042e4c0 | 6218 | case bp_tracepoint: |
7a697b8d | 6219 | case bp_fast_tracepoint: |
0fb4aa4b | 6220 | case bp_static_tracepoint: |
e7e0cddf | 6221 | case bp_dprintf: |
4efc6507 | 6222 | case bp_jit_event: |
0e30163f JK |
6223 | case bp_gnu_ifunc_resolver: |
6224 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6225 | if (opts.addressprint) |
3086aeae DJ |
6226 | { |
6227 | annotate_field (4); | |
54e52265 | 6228 | if (header_of_multiple) |
112e8700 | 6229 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6230 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6231 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6232 | else |
112e8700 | 6233 | uiout->field_core_addr ("addr", |
5af949e3 | 6234 | loc->gdbarch, loc->address); |
3086aeae DJ |
6235 | } |
6236 | annotate_field (5); | |
0d381245 | 6237 | if (!header_of_multiple) |
170b53b2 | 6238 | print_breakpoint_location (b, loc); |
0d381245 | 6239 | if (b->loc) |
a6d9a66e | 6240 | *last_loc = b->loc; |
3086aeae DJ |
6241 | break; |
6242 | } | |
c906108c | 6243 | |
6c95b8df | 6244 | |
998580f1 | 6245 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6246 | { |
6247 | struct inferior *inf; | |
998580f1 MK |
6248 | VEC(int) *inf_num = NULL; |
6249 | int mi_only = 1; | |
6c95b8df | 6250 | |
998580f1 | 6251 | ALL_INFERIORS (inf) |
6c95b8df PA |
6252 | { |
6253 | if (inf->pspace == loc->pspace) | |
998580f1 | 6254 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6255 | } |
998580f1 MK |
6256 | |
6257 | /* For backward compatibility, don't display inferiors in CLI unless | |
6258 | there are several. Always display for MI. */ | |
6259 | if (allflag | |
6260 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6261 | && (number_of_program_spaces () > 1 | |
6262 | || number_of_inferiors () > 1) | |
6263 | /* LOC is for existing B, it cannot be in | |
6264 | moribund_locations and thus having NULL OWNER. */ | |
6265 | && loc->owner->type != bp_catchpoint)) | |
6266 | mi_only = 0; | |
6267 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6268 | VEC_free (int, inf_num); | |
6c95b8df PA |
6269 | } |
6270 | ||
4a306c9a | 6271 | if (!part_of_multiple) |
c4093a6a | 6272 | { |
4a306c9a JB |
6273 | if (b->thread != -1) |
6274 | { | |
6275 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6276 | "stop only in" line a little further down. */ |
112e8700 SM |
6277 | uiout->text (" thread "); |
6278 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6279 | } |
6280 | else if (b->task != 0) | |
6281 | { | |
112e8700 SM |
6282 | uiout->text (" task "); |
6283 | uiout->field_int ("task", b->task); | |
4a306c9a | 6284 | } |
c4093a6a | 6285 | } |
f1310107 | 6286 | |
112e8700 | 6287 | uiout->text ("\n"); |
f1310107 | 6288 | |
348d480f | 6289 | if (!part_of_multiple) |
f1310107 TJB |
6290 | b->ops->print_one_detail (b, uiout); |
6291 | ||
0d381245 | 6292 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6293 | { |
6294 | annotate_field (6); | |
112e8700 | 6295 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6296 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6297 | the frame ID. */ |
112e8700 | 6298 | uiout->field_core_addr ("frame", |
5af949e3 | 6299 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6300 | uiout->text ("\n"); |
c4093a6a JM |
6301 | } |
6302 | ||
28010a5d | 6303 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6304 | { |
6305 | annotate_field (7); | |
d77f58be | 6306 | if (is_tracepoint (b)) |
112e8700 | 6307 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6308 | else |
112e8700 SM |
6309 | uiout->text ("\tstop only if "); |
6310 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6311 | |
6312 | /* Print whether the target is doing the breakpoint's condition | |
6313 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6314 | if (is_breakpoint (b) | |
6315 | && breakpoint_condition_evaluation_mode () | |
6316 | == condition_evaluation_target) | |
6317 | { | |
112e8700 SM |
6318 | uiout->text (" ("); |
6319 | uiout->field_string ("evaluated-by", | |
b775012e | 6320 | bp_condition_evaluator (b)); |
112e8700 | 6321 | uiout->text (" evals)"); |
b775012e | 6322 | } |
112e8700 | 6323 | uiout->text ("\n"); |
0101ce28 JJ |
6324 | } |
6325 | ||
0d381245 | 6326 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6327 | { |
4a64f543 | 6328 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6329 | uiout->text ("\tstop only in thread "); |
6330 | if (uiout->is_mi_like_p ()) | |
6331 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6332 | else |
6333 | { | |
6334 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6335 | ||
112e8700 | 6336 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6337 | } |
112e8700 | 6338 | uiout->text ("\n"); |
c4093a6a JM |
6339 | } |
6340 | ||
556ec64d YQ |
6341 | if (!part_of_multiple) |
6342 | { | |
6343 | if (b->hit_count) | |
31f56a27 YQ |
6344 | { |
6345 | /* FIXME should make an annotation for this. */ | |
6346 | if (is_catchpoint (b)) | |
112e8700 | 6347 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6348 | else if (is_tracepoint (b)) |
112e8700 | 6349 | uiout->text ("\ttracepoint"); |
31f56a27 | 6350 | else |
112e8700 SM |
6351 | uiout->text ("\tbreakpoint"); |
6352 | uiout->text (" already hit "); | |
6353 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6354 | if (b->hit_count == 1) |
112e8700 | 6355 | uiout->text (" time\n"); |
31f56a27 | 6356 | else |
112e8700 | 6357 | uiout->text (" times\n"); |
31f56a27 | 6358 | } |
556ec64d YQ |
6359 | else |
6360 | { | |
31f56a27 | 6361 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6362 | if (uiout->is_mi_like_p ()) |
6363 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6364 | } |
6365 | } | |
8b93c638 | 6366 | |
0d381245 | 6367 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6368 | { |
6369 | annotate_field (8); | |
112e8700 SM |
6370 | uiout->text ("\tignore next "); |
6371 | uiout->field_int ("ignore", b->ignore_count); | |
6372 | uiout->text (" hits\n"); | |
c4093a6a | 6373 | } |
059fb39f | 6374 | |
816338b5 SS |
6375 | /* Note that an enable count of 1 corresponds to "enable once" |
6376 | behavior, which is reported by the combination of enablement and | |
6377 | disposition, so we don't need to mention it here. */ | |
6378 | if (!part_of_multiple && b->enable_count > 1) | |
6379 | { | |
6380 | annotate_field (8); | |
112e8700 | 6381 | uiout->text ("\tdisable after "); |
816338b5 SS |
6382 | /* Tweak the wording to clarify that ignore and enable counts |
6383 | are distinct, and have additive effect. */ | |
6384 | if (b->ignore_count) | |
112e8700 | 6385 | uiout->text ("additional "); |
816338b5 | 6386 | else |
112e8700 SM |
6387 | uiout->text ("next "); |
6388 | uiout->field_int ("enable", b->enable_count); | |
6389 | uiout->text (" hits\n"); | |
816338b5 SS |
6390 | } |
6391 | ||
f196051f SS |
6392 | if (!part_of_multiple && is_tracepoint (b)) |
6393 | { | |
6394 | struct tracepoint *tp = (struct tracepoint *) b; | |
6395 | ||
6396 | if (tp->traceframe_usage) | |
6397 | { | |
112e8700 SM |
6398 | uiout->text ("\ttrace buffer usage "); |
6399 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6400 | uiout->text (" bytes\n"); | |
f196051f SS |
6401 | } |
6402 | } | |
d3ce09f5 | 6403 | |
d1b0a7bf | 6404 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6405 | if (!part_of_multiple && l) |
c4093a6a JM |
6406 | { |
6407 | annotate_field (9); | |
2e783024 | 6408 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6409 | print_command_lines (uiout, l, 4); |
c4093a6a | 6410 | } |
d24317b4 | 6411 | |
d9b3f62e | 6412 | if (is_tracepoint (b)) |
1042e4c0 | 6413 | { |
d9b3f62e PA |
6414 | struct tracepoint *t = (struct tracepoint *) b; |
6415 | ||
6416 | if (!part_of_multiple && t->pass_count) | |
6417 | { | |
6418 | annotate_field (10); | |
112e8700 SM |
6419 | uiout->text ("\tpass count "); |
6420 | uiout->field_int ("pass", t->pass_count); | |
6421 | uiout->text (" \n"); | |
d9b3f62e | 6422 | } |
f2a8bc8a YQ |
6423 | |
6424 | /* Don't display it when tracepoint or tracepoint location is | |
6425 | pending. */ | |
6426 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6427 | { | |
6428 | annotate_field (11); | |
6429 | ||
112e8700 SM |
6430 | if (uiout->is_mi_like_p ()) |
6431 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6432 | loc->inserted ? "y" : "n"); |
6433 | else | |
6434 | { | |
6435 | if (loc->inserted) | |
112e8700 | 6436 | uiout->text ("\t"); |
f2a8bc8a | 6437 | else |
112e8700 SM |
6438 | uiout->text ("\tnot "); |
6439 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6440 | } |
6441 | } | |
1042e4c0 SS |
6442 | } |
6443 | ||
112e8700 | 6444 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6445 | { |
3a5c3e22 PA |
6446 | if (is_watchpoint (b)) |
6447 | { | |
6448 | struct watchpoint *w = (struct watchpoint *) b; | |
6449 | ||
112e8700 | 6450 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6451 | } |
f00aae0f | 6452 | else if (b->location != NULL |
d28cd78a | 6453 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6454 | uiout->field_string ("original-location", |
d28cd78a | 6455 | event_location_to_string (b->location.get ())); |
d24317b4 | 6456 | } |
c4093a6a | 6457 | } |
c5aa993b | 6458 | |
0d381245 VP |
6459 | static void |
6460 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6461 | struct bp_location **last_loc, |
6c95b8df | 6462 | int allflag) |
0d381245 | 6463 | { |
79a45e25 | 6464 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6465 | |
2e783024 TT |
6466 | { |
6467 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6468 | |
2e783024 TT |
6469 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6470 | } | |
0d381245 VP |
6471 | |
6472 | /* If this breakpoint has custom print function, | |
6473 | it's already printed. Otherwise, print individual | |
6474 | locations, if any. */ | |
6475 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6476 | { | |
4a64f543 MS |
6477 | /* If breakpoint has a single location that is disabled, we |
6478 | print it as if it had several locations, since otherwise it's | |
6479 | hard to represent "breakpoint enabled, location disabled" | |
6480 | situation. | |
6481 | ||
6482 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6483 | internally, that's not a property exposed to user. */ |
0d381245 | 6484 | if (b->loc |
a5606eee | 6485 | && !is_hardware_watchpoint (b) |
8d3788bd | 6486 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6487 | { |
6488 | struct bp_location *loc; | |
6489 | int n = 1; | |
8d3788bd | 6490 | |
0d381245 | 6491 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6492 | { |
2e783024 | 6493 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6494 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6495 | } |
0d381245 VP |
6496 | } |
6497 | } | |
6498 | } | |
6499 | ||
a6d9a66e UW |
6500 | static int |
6501 | breakpoint_address_bits (struct breakpoint *b) | |
6502 | { | |
6503 | int print_address_bits = 0; | |
6504 | struct bp_location *loc; | |
6505 | ||
c6d81124 PA |
6506 | /* Software watchpoints that aren't watching memory don't have an |
6507 | address to print. */ | |
6508 | if (is_no_memory_software_watchpoint (b)) | |
6509 | return 0; | |
6510 | ||
a6d9a66e UW |
6511 | for (loc = b->loc; loc; loc = loc->next) |
6512 | { | |
c7437ca6 PA |
6513 | int addr_bit; |
6514 | ||
c7437ca6 | 6515 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6516 | if (addr_bit > print_address_bits) |
6517 | print_address_bits = addr_bit; | |
6518 | } | |
6519 | ||
6520 | return print_address_bits; | |
6521 | } | |
0d381245 | 6522 | |
65630365 | 6523 | /* See breakpoint.h. */ |
c5aa993b | 6524 | |
65630365 PA |
6525 | void |
6526 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6527 | { |
a6d9a66e | 6528 | struct bp_location *dummy_loc = NULL; |
65630365 | 6529 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6530 | } |
c5aa993b | 6531 | |
09d682a4 TT |
6532 | /* Return true if this breakpoint was set by the user, false if it is |
6533 | internal or momentary. */ | |
6534 | ||
6535 | int | |
6536 | user_breakpoint_p (struct breakpoint *b) | |
6537 | { | |
46c6471b | 6538 | return b->number > 0; |
09d682a4 TT |
6539 | } |
6540 | ||
93daf339 TT |
6541 | /* See breakpoint.h. */ |
6542 | ||
6543 | int | |
6544 | pending_breakpoint_p (struct breakpoint *b) | |
6545 | { | |
6546 | return b->loc == NULL; | |
6547 | } | |
6548 | ||
7f3b0473 | 6549 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6550 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6551 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6552 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6553 | ones for which it returns non-zero. Return the total number of | |
6554 | breakpoints listed. */ | |
c906108c | 6555 | |
d77f58be | 6556 | static int |
4495129a | 6557 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6558 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6559 | { |
52f0bd74 | 6560 | struct breakpoint *b; |
a6d9a66e | 6561 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6562 | int nr_printable_breakpoints; |
79a45b7d | 6563 | struct value_print_options opts; |
a6d9a66e | 6564 | int print_address_bits = 0; |
269b11a2 | 6565 | int print_type_col_width = 14; |
79a45e25 | 6566 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6567 | |
79a45b7d TT |
6568 | get_user_print_options (&opts); |
6569 | ||
4a64f543 MS |
6570 | /* Compute the number of rows in the table, as well as the size |
6571 | required for address fields. */ | |
7f3b0473 AC |
6572 | nr_printable_breakpoints = 0; |
6573 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6574 | { |
6575 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6576 | if (filter && !filter (b)) | |
6577 | continue; | |
6578 | ||
6579 | /* If we have an "args" string, it is a list of breakpoints to | |
6580 | accept. Skip the others. */ | |
6581 | if (args != NULL && *args != '\0') | |
6582 | { | |
6583 | if (allflag && parse_and_eval_long (args) != b->number) | |
6584 | continue; | |
6585 | if (!allflag && !number_is_in_list (args, b->number)) | |
6586 | continue; | |
6587 | } | |
269b11a2 | 6588 | |
e5a67952 MS |
6589 | if (allflag || user_breakpoint_p (b)) |
6590 | { | |
6591 | int addr_bit, type_len; | |
a6d9a66e | 6592 | |
e5a67952 MS |
6593 | addr_bit = breakpoint_address_bits (b); |
6594 | if (addr_bit > print_address_bits) | |
6595 | print_address_bits = addr_bit; | |
269b11a2 | 6596 | |
e5a67952 MS |
6597 | type_len = strlen (bptype_string (b->type)); |
6598 | if (type_len > print_type_col_width) | |
6599 | print_type_col_width = type_len; | |
6600 | ||
6601 | nr_printable_breakpoints++; | |
6602 | } | |
6603 | } | |
7f3b0473 | 6604 | |
4a2b031d TT |
6605 | { |
6606 | ui_out_emit_table table_emitter (uiout, | |
6607 | opts.addressprint ? 6 : 5, | |
6608 | nr_printable_breakpoints, | |
6609 | "BreakpointTable"); | |
6610 | ||
6611 | if (nr_printable_breakpoints > 0) | |
6612 | annotate_breakpoints_headers (); | |
6613 | if (nr_printable_breakpoints > 0) | |
6614 | annotate_field (0); | |
6615 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6616 | if (nr_printable_breakpoints > 0) | |
6617 | annotate_field (1); | |
6618 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6619 | if (nr_printable_breakpoints > 0) | |
6620 | annotate_field (2); | |
6621 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6622 | if (nr_printable_breakpoints > 0) | |
6623 | annotate_field (3); | |
6624 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6625 | if (opts.addressprint) | |
6626 | { | |
6627 | if (nr_printable_breakpoints > 0) | |
6628 | annotate_field (4); | |
6629 | if (print_address_bits <= 32) | |
6630 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6631 | else | |
6632 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6633 | } | |
6634 | if (nr_printable_breakpoints > 0) | |
6635 | annotate_field (5); | |
6636 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6637 | uiout->table_body (); | |
6638 | if (nr_printable_breakpoints > 0) | |
6639 | annotate_breakpoints_table (); | |
6640 | ||
6641 | ALL_BREAKPOINTS (b) | |
6642 | { | |
6643 | QUIT; | |
6644 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6645 | if (filter && !filter (b)) | |
6646 | continue; | |
e5a67952 | 6647 | |
4a2b031d TT |
6648 | /* If we have an "args" string, it is a list of breakpoints to |
6649 | accept. Skip the others. */ | |
e5a67952 | 6650 | |
4a2b031d TT |
6651 | if (args != NULL && *args != '\0') |
6652 | { | |
6653 | if (allflag) /* maintenance info breakpoint */ | |
6654 | { | |
6655 | if (parse_and_eval_long (args) != b->number) | |
6656 | continue; | |
6657 | } | |
6658 | else /* all others */ | |
6659 | { | |
6660 | if (!number_is_in_list (args, b->number)) | |
6661 | continue; | |
6662 | } | |
6663 | } | |
6664 | /* We only print out user settable breakpoints unless the | |
6665 | allflag is set. */ | |
6666 | if (allflag || user_breakpoint_p (b)) | |
6667 | print_one_breakpoint (b, &last_loc, allflag); | |
6668 | } | |
6669 | } | |
698384cd | 6670 | |
7f3b0473 | 6671 | if (nr_printable_breakpoints == 0) |
c906108c | 6672 | { |
4a64f543 MS |
6673 | /* If there's a filter, let the caller decide how to report |
6674 | empty list. */ | |
d77f58be SS |
6675 | if (!filter) |
6676 | { | |
e5a67952 | 6677 | if (args == NULL || *args == '\0') |
112e8700 | 6678 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6679 | else |
112e8700 | 6680 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6681 | args); |
d77f58be | 6682 | } |
c906108c SS |
6683 | } |
6684 | else | |
c4093a6a | 6685 | { |
a6d9a66e UW |
6686 | if (last_loc && !server_command) |
6687 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6688 | } |
c906108c | 6689 | |
4a64f543 | 6690 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6691 | there have been breakpoints? */ |
c906108c | 6692 | annotate_breakpoints_table_end (); |
d77f58be SS |
6693 | |
6694 | return nr_printable_breakpoints; | |
c906108c SS |
6695 | } |
6696 | ||
ad443146 SS |
6697 | /* Display the value of default-collect in a way that is generally |
6698 | compatible with the breakpoint list. */ | |
6699 | ||
6700 | static void | |
6701 | default_collect_info (void) | |
6702 | { | |
79a45e25 PA |
6703 | struct ui_out *uiout = current_uiout; |
6704 | ||
ad443146 SS |
6705 | /* If it has no value (which is frequently the case), say nothing; a |
6706 | message like "No default-collect." gets in user's face when it's | |
6707 | not wanted. */ | |
6708 | if (!*default_collect) | |
6709 | return; | |
6710 | ||
6711 | /* The following phrase lines up nicely with per-tracepoint collect | |
6712 | actions. */ | |
112e8700 SM |
6713 | uiout->text ("default collect "); |
6714 | uiout->field_string ("default-collect", default_collect); | |
6715 | uiout->text (" \n"); | |
ad443146 SS |
6716 | } |
6717 | ||
c906108c | 6718 | static void |
11db9430 | 6719 | info_breakpoints_command (char *args, int from_tty) |
c906108c | 6720 | { |
e5a67952 | 6721 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6722 | |
6723 | default_collect_info (); | |
d77f58be SS |
6724 | } |
6725 | ||
6726 | static void | |
11db9430 | 6727 | info_watchpoints_command (char *args, int from_tty) |
d77f58be | 6728 | { |
e5a67952 | 6729 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6730 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6731 | |
6732 | if (num_printed == 0) | |
6733 | { | |
e5a67952 | 6734 | if (args == NULL || *args == '\0') |
112e8700 | 6735 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6736 | else |
112e8700 | 6737 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6738 | } |
c906108c SS |
6739 | } |
6740 | ||
7a292a7a | 6741 | static void |
4495129a | 6742 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6743 | { |
e5a67952 | 6744 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6745 | |
6746 | default_collect_info (); | |
c906108c SS |
6747 | } |
6748 | ||
0d381245 | 6749 | static int |
714835d5 | 6750 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6751 | struct program_space *pspace, |
714835d5 | 6752 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6753 | { |
6754 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6755 | |
0d381245 VP |
6756 | for (; bl; bl = bl->next) |
6757 | { | |
6c95b8df PA |
6758 | if (bl->pspace == pspace |
6759 | && bl->address == pc | |
0d381245 VP |
6760 | && (!overlay_debugging || bl->section == section)) |
6761 | return 1; | |
6762 | } | |
6763 | return 0; | |
6764 | } | |
6765 | ||
672f9b60 | 6766 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6767 | concerns with logical breakpoints, so we match program spaces, not |
6768 | address spaces. */ | |
c906108c SS |
6769 | |
6770 | static void | |
6c95b8df PA |
6771 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6772 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6773 | struct obj_section *section, int thread) |
c906108c | 6774 | { |
52f0bd74 AC |
6775 | int others = 0; |
6776 | struct breakpoint *b; | |
c906108c SS |
6777 | |
6778 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6779 | others += (user_breakpoint_p (b) |
6780 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6781 | if (others > 0) |
6782 | { | |
a3f17187 AC |
6783 | if (others == 1) |
6784 | printf_filtered (_("Note: breakpoint ")); | |
6785 | else /* if (others == ???) */ | |
6786 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6787 | ALL_BREAKPOINTS (b) |
672f9b60 | 6788 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6789 | { |
6790 | others--; | |
6791 | printf_filtered ("%d", b->number); | |
6792 | if (b->thread == -1 && thread != -1) | |
6793 | printf_filtered (" (all threads)"); | |
6794 | else if (b->thread != -1) | |
6795 | printf_filtered (" (thread %d)", b->thread); | |
6796 | printf_filtered ("%s%s ", | |
059fb39f | 6797 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6798 | || b->enable_state == bp_call_disabled) |
0d381245 | 6799 | ? " (disabled)" |
0d381245 VP |
6800 | : ""), |
6801 | (others > 1) ? "," | |
6802 | : ((others == 1) ? " and" : "")); | |
6803 | } | |
a3f17187 | 6804 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6805 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6806 | printf_filtered (".\n"); |
6807 | } | |
6808 | } | |
6809 | \f | |
c906108c | 6810 | |
e4f237da | 6811 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6812 | BPT locations. For some breakpoint types, the locations' address members |
6813 | are irrelevant and it makes no sense to attempt to compare them to other | |
6814 | addresses (or use them for any other purpose either). | |
e4f237da | 6815 | |
4a64f543 | 6816 | More specifically, each of the following breakpoint types will |
244558af | 6817 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6818 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6819 | breakpoint location at address zero: |
e4f237da KB |
6820 | |
6821 | bp_watchpoint | |
2d134ed3 PA |
6822 | bp_catchpoint |
6823 | ||
6824 | */ | |
e4f237da KB |
6825 | |
6826 | static int | |
6827 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6828 | { | |
6829 | enum bptype type = bpt->type; | |
6830 | ||
2d134ed3 PA |
6831 | return (type != bp_watchpoint && type != bp_catchpoint); |
6832 | } | |
6833 | ||
6834 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6835 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6836 | ||
6837 | static int | |
4a64f543 MS |
6838 | watchpoint_locations_match (struct bp_location *loc1, |
6839 | struct bp_location *loc2) | |
2d134ed3 | 6840 | { |
3a5c3e22 PA |
6841 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6842 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6843 | ||
6844 | /* Both of them must exist. */ | |
6845 | gdb_assert (w1 != NULL); | |
6846 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6847 | |
4a64f543 MS |
6848 | /* If the target can evaluate the condition expression in hardware, |
6849 | then we we need to insert both watchpoints even if they are at | |
6850 | the same place. Otherwise the watchpoint will only trigger when | |
6851 | the condition of whichever watchpoint was inserted evaluates to | |
6852 | true, not giving a chance for GDB to check the condition of the | |
6853 | other watchpoint. */ | |
3a5c3e22 | 6854 | if ((w1->cond_exp |
4a64f543 MS |
6855 | && target_can_accel_watchpoint_condition (loc1->address, |
6856 | loc1->length, | |
0cf6dd15 | 6857 | loc1->watchpoint_type, |
4d01a485 | 6858 | w1->cond_exp.get ())) |
3a5c3e22 | 6859 | || (w2->cond_exp |
4a64f543 MS |
6860 | && target_can_accel_watchpoint_condition (loc2->address, |
6861 | loc2->length, | |
0cf6dd15 | 6862 | loc2->watchpoint_type, |
4d01a485 | 6863 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6864 | return 0; |
6865 | ||
85d721b8 PA |
6866 | /* Note that this checks the owner's type, not the location's. In |
6867 | case the target does not support read watchpoints, but does | |
6868 | support access watchpoints, we'll have bp_read_watchpoint | |
6869 | watchpoints with hw_access locations. Those should be considered | |
6870 | duplicates of hw_read locations. The hw_read locations will | |
6871 | become hw_access locations later. */ | |
2d134ed3 PA |
6872 | return (loc1->owner->type == loc2->owner->type |
6873 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6874 | && loc1->address == loc2->address | |
6875 | && loc1->length == loc2->length); | |
e4f237da KB |
6876 | } |
6877 | ||
31e77af2 | 6878 | /* See breakpoint.h. */ |
6c95b8df | 6879 | |
31e77af2 | 6880 | int |
accd0bcd YQ |
6881 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6882 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6883 | { |
f5656ead | 6884 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6885 | || aspace1 == aspace2) |
6886 | && addr1 == addr2); | |
6887 | } | |
6888 | ||
f1310107 TJB |
6889 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6890 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6891 | matches ASPACE2. On targets that have global breakpoints, the address | |
6892 | space doesn't really matter. */ | |
6893 | ||
6894 | static int | |
accd0bcd YQ |
6895 | breakpoint_address_match_range (const address_space *aspace1, |
6896 | CORE_ADDR addr1, | |
6897 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6898 | CORE_ADDR addr2) |
6899 | { | |
f5656ead | 6900 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6901 | || aspace1 == aspace2) |
6902 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6903 | } | |
6904 | ||
6905 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6906 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6907 | matches the breakpoint's address space. On targets that have global | |
6908 | breakpoints, the address space doesn't really matter. */ | |
6909 | ||
6910 | static int | |
6911 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6912 | const address_space *aspace, |
f1310107 TJB |
6913 | CORE_ADDR addr) |
6914 | { | |
6915 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6916 | aspace, addr) | |
6917 | || (bl->length | |
6918 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6919 | bl->address, bl->length, | |
6920 | aspace, addr))); | |
6921 | } | |
6922 | ||
d35ae833 PA |
6923 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6924 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6925 | match happens only if ASPACE matches the breakpoint's address | |
6926 | space. On targets that have global breakpoints, the address space | |
6927 | doesn't really matter. */ | |
6928 | ||
6929 | static int | |
6930 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6931 | const address_space *aspace, |
d35ae833 PA |
6932 | CORE_ADDR addr, int len) |
6933 | { | |
6934 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6935 | || bl->pspace->aspace == aspace) | |
6936 | { | |
6937 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6938 | ||
6939 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6940 | return 1; | |
6941 | } | |
6942 | return 0; | |
6943 | } | |
6944 | ||
1e4d1764 YQ |
6945 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6946 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6947 | true, otherwise returns false. */ | |
6948 | ||
6949 | static int | |
6950 | tracepoint_locations_match (struct bp_location *loc1, | |
6951 | struct bp_location *loc2) | |
6952 | { | |
6953 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6954 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6955 | locations at the same address of different tracepoints are regarded as | |
6956 | different locations. */ | |
6957 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6958 | else | |
6959 | return 0; | |
6960 | } | |
6961 | ||
2d134ed3 PA |
6962 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6963 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6964 | represent the same location. */ | |
6965 | ||
6966 | static int | |
4a64f543 MS |
6967 | breakpoint_locations_match (struct bp_location *loc1, |
6968 | struct bp_location *loc2) | |
2d134ed3 | 6969 | { |
2bdf28a0 JK |
6970 | int hw_point1, hw_point2; |
6971 | ||
6972 | /* Both of them must not be in moribund_locations. */ | |
6973 | gdb_assert (loc1->owner != NULL); | |
6974 | gdb_assert (loc2->owner != NULL); | |
6975 | ||
6976 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6977 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6978 | |
6979 | if (hw_point1 != hw_point2) | |
6980 | return 0; | |
6981 | else if (hw_point1) | |
6982 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6983 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6984 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6985 | else |
f1310107 TJB |
6986 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6987 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6988 | loc2->pspace->aspace, loc2->address) | |
6989 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6990 | } |
6991 | ||
76897487 KB |
6992 | static void |
6993 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6994 | int bnum, int have_bnum) | |
6995 | { | |
f63fbe86 MS |
6996 | /* The longest string possibly returned by hex_string_custom |
6997 | is 50 chars. These must be at least that big for safety. */ | |
6998 | char astr1[64]; | |
6999 | char astr2[64]; | |
76897487 | 7000 | |
bb599908 PH |
7001 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7002 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7003 | if (have_bnum) |
8a3fe4f8 | 7004 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7005 | bnum, astr1, astr2); |
7006 | else | |
8a3fe4f8 | 7007 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7008 | } |
7009 | ||
4a64f543 MS |
7010 | /* Adjust a breakpoint's address to account for architectural |
7011 | constraints on breakpoint placement. Return the adjusted address. | |
7012 | Note: Very few targets require this kind of adjustment. For most | |
7013 | targets, this function is simply the identity function. */ | |
76897487 KB |
7014 | |
7015 | static CORE_ADDR | |
a6d9a66e UW |
7016 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7017 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7018 | { |
a6d9a66e | 7019 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7020 | { |
7021 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7022 | return bpaddr; | |
7023 | } | |
88f7da05 KB |
7024 | else if (bptype == bp_watchpoint |
7025 | || bptype == bp_hardware_watchpoint | |
7026 | || bptype == bp_read_watchpoint | |
7027 | || bptype == bp_access_watchpoint | |
fe798b75 | 7028 | || bptype == bp_catchpoint) |
88f7da05 KB |
7029 | { |
7030 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7031 | have their addresses modified. */ | |
7032 | return bpaddr; | |
7033 | } | |
7c16b83e PA |
7034 | else if (bptype == bp_single_step) |
7035 | { | |
7036 | /* Single-step breakpoints should not have their addresses | |
7037 | modified. If there's any architectural constrain that | |
7038 | applies to this address, then it should have already been | |
7039 | taken into account when the breakpoint was created in the | |
7040 | first place. If we didn't do this, stepping through e.g., | |
7041 | Thumb-2 IT blocks would break. */ | |
7042 | return bpaddr; | |
7043 | } | |
76897487 KB |
7044 | else |
7045 | { | |
7046 | CORE_ADDR adjusted_bpaddr; | |
7047 | ||
7048 | /* Some targets have architectural constraints on the placement | |
7049 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7050 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7051 | |
7052 | /* An adjusted breakpoint address can significantly alter | |
7053 | a user's expectations. Print a warning if an adjustment | |
7054 | is required. */ | |
7055 | if (adjusted_bpaddr != bpaddr) | |
7056 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7057 | ||
7058 | return adjusted_bpaddr; | |
7059 | } | |
7060 | } | |
7061 | ||
5625a286 | 7062 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 7063 | { |
5625a286 | 7064 | bp_location *loc = this; |
7cc221ef | 7065 | |
348d480f PA |
7066 | gdb_assert (ops != NULL); |
7067 | ||
28010a5d PA |
7068 | loc->ops = ops; |
7069 | loc->owner = owner; | |
b775012e | 7070 | loc->cond_bytecode = NULL; |
0d381245 VP |
7071 | loc->shlib_disabled = 0; |
7072 | loc->enabled = 1; | |
e049a4b5 | 7073 | |
28010a5d | 7074 | switch (owner->type) |
e049a4b5 DJ |
7075 | { |
7076 | case bp_breakpoint: | |
7c16b83e | 7077 | case bp_single_step: |
e049a4b5 DJ |
7078 | case bp_until: |
7079 | case bp_finish: | |
7080 | case bp_longjmp: | |
7081 | case bp_longjmp_resume: | |
e2e4d78b | 7082 | case bp_longjmp_call_dummy: |
186c406b TT |
7083 | case bp_exception: |
7084 | case bp_exception_resume: | |
e049a4b5 | 7085 | case bp_step_resume: |
2c03e5be | 7086 | case bp_hp_step_resume: |
e049a4b5 DJ |
7087 | case bp_watchpoint_scope: |
7088 | case bp_call_dummy: | |
aa7d318d | 7089 | case bp_std_terminate: |
e049a4b5 DJ |
7090 | case bp_shlib_event: |
7091 | case bp_thread_event: | |
7092 | case bp_overlay_event: | |
4efc6507 | 7093 | case bp_jit_event: |
0fd8e87f | 7094 | case bp_longjmp_master: |
aa7d318d | 7095 | case bp_std_terminate_master: |
186c406b | 7096 | case bp_exception_master: |
0e30163f JK |
7097 | case bp_gnu_ifunc_resolver: |
7098 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7099 | case bp_dprintf: |
e049a4b5 | 7100 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7101 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7102 | break; |
7103 | case bp_hardware_breakpoint: | |
7104 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7105 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7106 | break; |
7107 | case bp_hardware_watchpoint: | |
7108 | case bp_read_watchpoint: | |
7109 | case bp_access_watchpoint: | |
7110 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7111 | break; | |
7112 | case bp_watchpoint: | |
ce78b96d | 7113 | case bp_catchpoint: |
15c3d785 PA |
7114 | case bp_tracepoint: |
7115 | case bp_fast_tracepoint: | |
0fb4aa4b | 7116 | case bp_static_tracepoint: |
e049a4b5 DJ |
7117 | loc->loc_type = bp_loc_other; |
7118 | break; | |
7119 | default: | |
e2e0b3e5 | 7120 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7121 | } |
7122 | ||
f431efe5 | 7123 | loc->refc = 1; |
28010a5d PA |
7124 | } |
7125 | ||
7126 | /* Allocate a struct bp_location. */ | |
7127 | ||
7128 | static struct bp_location * | |
7129 | allocate_bp_location (struct breakpoint *bpt) | |
7130 | { | |
348d480f PA |
7131 | return bpt->ops->allocate_location (bpt); |
7132 | } | |
7cc221ef | 7133 | |
f431efe5 PA |
7134 | static void |
7135 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7136 | { |
348d480f | 7137 | loc->ops->dtor (loc); |
4d01a485 | 7138 | delete loc; |
fe3f5fa8 VP |
7139 | } |
7140 | ||
f431efe5 PA |
7141 | /* Increment reference count. */ |
7142 | ||
7143 | static void | |
7144 | incref_bp_location (struct bp_location *bl) | |
7145 | { | |
7146 | ++bl->refc; | |
7147 | } | |
7148 | ||
7149 | /* Decrement reference count. If the reference count reaches 0, | |
7150 | destroy the bp_location. Sets *BLP to NULL. */ | |
7151 | ||
7152 | static void | |
7153 | decref_bp_location (struct bp_location **blp) | |
7154 | { | |
0807b50c PA |
7155 | gdb_assert ((*blp)->refc > 0); |
7156 | ||
f431efe5 PA |
7157 | if (--(*blp)->refc == 0) |
7158 | free_bp_location (*blp); | |
7159 | *blp = NULL; | |
7160 | } | |
7161 | ||
346774a9 | 7162 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7163 | |
b270e6f9 TT |
7164 | static breakpoint * |
7165 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7166 | { |
346774a9 | 7167 | struct breakpoint *b1; |
b270e6f9 | 7168 | struct breakpoint *result = b.get (); |
c906108c | 7169 | |
346774a9 PA |
7170 | /* Add this breakpoint to the end of the chain so that a list of |
7171 | breakpoints will come out in order of increasing numbers. */ | |
7172 | ||
7173 | b1 = breakpoint_chain; | |
7174 | if (b1 == 0) | |
b270e6f9 | 7175 | breakpoint_chain = b.release (); |
346774a9 PA |
7176 | else |
7177 | { | |
7178 | while (b1->next) | |
7179 | b1 = b1->next; | |
b270e6f9 | 7180 | b1->next = b.release (); |
346774a9 | 7181 | } |
b270e6f9 TT |
7182 | |
7183 | return result; | |
346774a9 PA |
7184 | } |
7185 | ||
7186 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7187 | ||
7188 | static void | |
7189 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7190 | struct gdbarch *gdbarch, | |
28010a5d | 7191 | enum bptype bptype, |
c0a91b2b | 7192 | const struct breakpoint_ops *ops) |
346774a9 | 7193 | { |
348d480f PA |
7194 | gdb_assert (ops != NULL); |
7195 | ||
28010a5d | 7196 | b->ops = ops; |
4d28f7a8 | 7197 | b->type = bptype; |
a6d9a66e | 7198 | b->gdbarch = gdbarch; |
c906108c SS |
7199 | b->language = current_language->la_language; |
7200 | b->input_radix = input_radix; | |
d0fb5eae | 7201 | b->related_breakpoint = b; |
346774a9 PA |
7202 | } |
7203 | ||
7204 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7205 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7206 | |
7207 | static struct breakpoint * | |
7208 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7209 | 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_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7215 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7216 | } |
7217 | ||
0e30163f JK |
7218 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7219 | resolutions should be made as the user specified the location explicitly | |
7220 | enough. */ | |
7221 | ||
0d381245 | 7222 | static void |
0e30163f | 7223 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7224 | { |
2bdf28a0 JK |
7225 | gdb_assert (loc->owner != NULL); |
7226 | ||
0d381245 | 7227 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7228 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7229 | || is_tracepoint (loc->owner)) |
0d381245 | 7230 | { |
0e30163f | 7231 | int is_gnu_ifunc; |
2c02bd72 | 7232 | const char *function_name; |
6a3a010b | 7233 | CORE_ADDR func_addr; |
0e30163f | 7234 | |
2c02bd72 | 7235 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7236 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7237 | |
7238 | if (is_gnu_ifunc && !explicit_loc) | |
7239 | { | |
7240 | struct breakpoint *b = loc->owner; | |
7241 | ||
7242 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7243 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7244 | &loc->requested_address)) |
7245 | { | |
7246 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7247 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7248 | loc->requested_address, | |
7249 | b->type); | |
7250 | } | |
7251 | else if (b->type == bp_breakpoint && b->loc == loc | |
7252 | && loc->next == NULL && b->related_breakpoint == b) | |
7253 | { | |
7254 | /* Create only the whole new breakpoint of this type but do not | |
7255 | mess more complicated breakpoints with multiple locations. */ | |
7256 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7257 | /* Remember the resolver's address for use by the return |
7258 | breakpoint. */ | |
7259 | loc->related_address = func_addr; | |
0e30163f JK |
7260 | } |
7261 | } | |
7262 | ||
2c02bd72 DE |
7263 | if (function_name) |
7264 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7265 | } |
7266 | } | |
7267 | ||
a6d9a66e | 7268 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7269 | struct gdbarch * |
a6d9a66e UW |
7270 | get_sal_arch (struct symtab_and_line sal) |
7271 | { | |
7272 | if (sal.section) | |
7273 | return get_objfile_arch (sal.section->objfile); | |
7274 | if (sal.symtab) | |
eb822aa6 | 7275 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7276 | |
7277 | return NULL; | |
7278 | } | |
7279 | ||
346774a9 PA |
7280 | /* Low level routine for partially initializing a breakpoint of type |
7281 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7282 | file name, and line number are provided by SAL. |
0d381245 VP |
7283 | |
7284 | It is expected that the caller will complete the initialization of | |
7285 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7286 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7287 | |
346774a9 PA |
7288 | static void |
7289 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7290 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7291 | const struct breakpoint_ops *ops) |
0d381245 | 7292 | { |
28010a5d | 7293 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7294 | |
3742cc8b | 7295 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7296 | |
6c95b8df PA |
7297 | if (bptype != bp_catchpoint) |
7298 | gdb_assert (sal.pspace != NULL); | |
7299 | ||
f8eba3c6 TT |
7300 | /* Store the program space that was used to set the breakpoint, |
7301 | except for ordinary breakpoints, which are independent of the | |
7302 | program space. */ | |
7303 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7304 | b->pspace = sal.pspace; | |
346774a9 | 7305 | } |
c906108c | 7306 | |
346774a9 PA |
7307 | /* set_raw_breakpoint is a low level routine for allocating and |
7308 | partially initializing a breakpoint of type BPTYPE. The newly | |
7309 | created breakpoint's address, section, source file name, and line | |
7310 | number are provided by SAL. The newly created and partially | |
7311 | initialized breakpoint is added to the breakpoint chain and | |
7312 | is also returned as the value of this function. | |
7313 | ||
7314 | It is expected that the caller will complete the initialization of | |
7315 | the newly created breakpoint struct as well as output any status | |
7316 | information regarding the creation of a new breakpoint. In | |
7317 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7318 | number! Care should be taken to not allow an error to occur | |
7319 | prior to completing the initialization of the breakpoint. If this | |
7320 | should happen, a bogus breakpoint will be left on the chain. */ | |
7321 | ||
7322 | struct breakpoint * | |
7323 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7324 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7325 | const struct breakpoint_ops *ops) |
346774a9 | 7326 | { |
3b0871f4 | 7327 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7328 | |
3b0871f4 | 7329 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7330 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7331 | } |
7332 | ||
53a5351d | 7333 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7334 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7335 | initiated the operation. */ | |
c906108c SS |
7336 | |
7337 | void | |
186c406b | 7338 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7339 | { |
35df4500 | 7340 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7341 | int thread = tp->global_num; |
0fd8e87f UW |
7342 | |
7343 | /* To avoid having to rescan all objfile symbols at every step, | |
7344 | we maintain a list of continually-inserted but always disabled | |
7345 | longjmp "master" breakpoints. Here, we simply create momentary | |
7346 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7347 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7348 | if (b->pspace == current_program_space |
186c406b TT |
7349 | && (b->type == bp_longjmp_master |
7350 | || b->type == bp_exception_master)) | |
0fd8e87f | 7351 | { |
06edf0c0 PA |
7352 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7353 | struct breakpoint *clone; | |
cc59ec59 | 7354 | |
e2e4d78b JK |
7355 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7356 | after their removal. */ | |
06edf0c0 | 7357 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7358 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7359 | clone->thread = thread; |
7360 | } | |
186c406b TT |
7361 | |
7362 | tp->initiating_frame = frame; | |
c906108c SS |
7363 | } |
7364 | ||
611c83ae | 7365 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7366 | void |
611c83ae | 7367 | delete_longjmp_breakpoint (int thread) |
c906108c | 7368 | { |
35df4500 | 7369 | struct breakpoint *b, *b_tmp; |
c906108c | 7370 | |
35df4500 | 7371 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7372 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7373 | { |
7374 | if (b->thread == thread) | |
7375 | delete_breakpoint (b); | |
7376 | } | |
c906108c SS |
7377 | } |
7378 | ||
f59f708a PA |
7379 | void |
7380 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7381 | { | |
7382 | struct breakpoint *b, *b_tmp; | |
7383 | ||
7384 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7385 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7386 | { | |
7387 | if (b->thread == thread) | |
7388 | b->disposition = disp_del_at_next_stop; | |
7389 | } | |
7390 | } | |
7391 | ||
e2e4d78b JK |
7392 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7393 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7394 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7395 | breakpoints. */ | |
7396 | ||
7397 | struct breakpoint * | |
7398 | set_longjmp_breakpoint_for_call_dummy (void) | |
7399 | { | |
7400 | struct breakpoint *b, *retval = NULL; | |
7401 | ||
7402 | ALL_BREAKPOINTS (b) | |
7403 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7404 | { | |
7405 | struct breakpoint *new_b; | |
7406 | ||
7407 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7408 | &momentary_breakpoint_ops, |
7409 | 1); | |
5d5658a1 | 7410 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7411 | |
7412 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7413 | ||
7414 | gdb_assert (new_b->related_breakpoint == new_b); | |
7415 | if (retval == NULL) | |
7416 | retval = new_b; | |
7417 | new_b->related_breakpoint = retval; | |
7418 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7419 | retval = retval->related_breakpoint; | |
7420 | retval->related_breakpoint = new_b; | |
7421 | } | |
7422 | ||
7423 | return retval; | |
7424 | } | |
7425 | ||
7426 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7427 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7428 | stack. |
7429 | ||
7430 | You should call this function only at places where it is safe to currently | |
7431 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7432 | frames. */ | |
7433 | ||
7434 | void | |
b67a2c6f | 7435 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7436 | { |
7437 | struct breakpoint *b, *b_tmp; | |
7438 | ||
7439 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7440 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7441 | { |
7442 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7443 | ||
7444 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7445 | dummy_b = dummy_b->related_breakpoint; | |
7446 | if (dummy_b->type != bp_call_dummy | |
7447 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7448 | continue; | |
7449 | ||
b67a2c6f | 7450 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7451 | |
7452 | while (b->related_breakpoint != b) | |
7453 | { | |
7454 | if (b_tmp == b->related_breakpoint) | |
7455 | b_tmp = b->related_breakpoint->next; | |
7456 | delete_breakpoint (b->related_breakpoint); | |
7457 | } | |
7458 | delete_breakpoint (b); | |
7459 | } | |
7460 | } | |
7461 | ||
1900040c MS |
7462 | void |
7463 | enable_overlay_breakpoints (void) | |
7464 | { | |
52f0bd74 | 7465 | struct breakpoint *b; |
1900040c MS |
7466 | |
7467 | ALL_BREAKPOINTS (b) | |
7468 | if (b->type == bp_overlay_event) | |
7469 | { | |
7470 | b->enable_state = bp_enabled; | |
44702360 | 7471 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7472 | overlay_events_enabled = 1; |
1900040c MS |
7473 | } |
7474 | } | |
7475 | ||
7476 | void | |
7477 | disable_overlay_breakpoints (void) | |
7478 | { | |
52f0bd74 | 7479 | struct breakpoint *b; |
1900040c MS |
7480 | |
7481 | ALL_BREAKPOINTS (b) | |
7482 | if (b->type == bp_overlay_event) | |
7483 | { | |
7484 | b->enable_state = bp_disabled; | |
44702360 | 7485 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7486 | overlay_events_enabled = 0; |
1900040c MS |
7487 | } |
7488 | } | |
7489 | ||
aa7d318d TT |
7490 | /* Set an active std::terminate breakpoint for each std::terminate |
7491 | master breakpoint. */ | |
7492 | void | |
7493 | set_std_terminate_breakpoint (void) | |
7494 | { | |
35df4500 | 7495 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7496 | |
35df4500 | 7497 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7498 | if (b->pspace == current_program_space |
7499 | && b->type == bp_std_terminate_master) | |
7500 | { | |
06edf0c0 | 7501 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7502 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7503 | } |
7504 | } | |
7505 | ||
7506 | /* Delete all the std::terminate breakpoints. */ | |
7507 | void | |
7508 | delete_std_terminate_breakpoint (void) | |
7509 | { | |
35df4500 | 7510 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7511 | |
35df4500 | 7512 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7513 | if (b->type == bp_std_terminate) |
7514 | delete_breakpoint (b); | |
7515 | } | |
7516 | ||
c4093a6a | 7517 | struct breakpoint * |
a6d9a66e | 7518 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7519 | { |
7520 | struct breakpoint *b; | |
c4093a6a | 7521 | |
06edf0c0 PA |
7522 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7523 | &internal_breakpoint_ops); | |
7524 | ||
b5de0fa7 | 7525 | b->enable_state = bp_enabled; |
f00aae0f | 7526 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7527 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7528 | |
44702360 | 7529 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7530 | |
c4093a6a JM |
7531 | return b; |
7532 | } | |
7533 | ||
0101ce28 JJ |
7534 | struct lang_and_radix |
7535 | { | |
7536 | enum language lang; | |
7537 | int radix; | |
7538 | }; | |
7539 | ||
4efc6507 DE |
7540 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7541 | ||
7542 | struct breakpoint * | |
7543 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7544 | { | |
2a7f3dff PA |
7545 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7546 | &internal_breakpoint_ops); | |
4efc6507 | 7547 | } |
0101ce28 | 7548 | |
03673fc7 PP |
7549 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7550 | ||
7551 | void | |
7552 | remove_jit_event_breakpoints (void) | |
7553 | { | |
7554 | struct breakpoint *b, *b_tmp; | |
7555 | ||
7556 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7557 | if (b->type == bp_jit_event | |
7558 | && b->loc->pspace == current_program_space) | |
7559 | delete_breakpoint (b); | |
7560 | } | |
7561 | ||
cae688ec JJ |
7562 | void |
7563 | remove_solib_event_breakpoints (void) | |
7564 | { | |
35df4500 | 7565 | struct breakpoint *b, *b_tmp; |
cae688ec | 7566 | |
35df4500 | 7567 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7568 | if (b->type == bp_shlib_event |
7569 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7570 | delete_breakpoint (b); |
7571 | } | |
7572 | ||
f37f681c PA |
7573 | /* See breakpoint.h. */ |
7574 | ||
7575 | void | |
7576 | remove_solib_event_breakpoints_at_next_stop (void) | |
7577 | { | |
7578 | struct breakpoint *b, *b_tmp; | |
7579 | ||
7580 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7581 | if (b->type == bp_shlib_event | |
7582 | && b->loc->pspace == current_program_space) | |
7583 | b->disposition = disp_del_at_next_stop; | |
7584 | } | |
7585 | ||
04086b45 PA |
7586 | /* Helper for create_solib_event_breakpoint / |
7587 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7588 | INSERT_MODE to pass through to update_global_location_list. */ | |
7589 | ||
7590 | static struct breakpoint * | |
7591 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7592 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7593 | { |
7594 | struct breakpoint *b; | |
7595 | ||
06edf0c0 PA |
7596 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7597 | &internal_breakpoint_ops); | |
04086b45 | 7598 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7599 | return b; |
7600 | } | |
7601 | ||
04086b45 PA |
7602 | struct breakpoint * |
7603 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7604 | { | |
7605 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7606 | } | |
7607 | ||
f37f681c PA |
7608 | /* See breakpoint.h. */ |
7609 | ||
7610 | struct breakpoint * | |
7611 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7612 | { | |
7613 | struct breakpoint *b; | |
7614 | ||
04086b45 PA |
7615 | /* Explicitly tell update_global_location_list to insert |
7616 | locations. */ | |
7617 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7618 | if (!b->loc->inserted) |
7619 | { | |
7620 | delete_breakpoint (b); | |
7621 | return NULL; | |
7622 | } | |
7623 | return b; | |
7624 | } | |
7625 | ||
cae688ec JJ |
7626 | /* Disable any breakpoints that are on code in shared libraries. Only |
7627 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7628 | ||
7629 | void | |
cb851954 | 7630 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7631 | { |
876fa593 | 7632 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7633 | |
876fa593 | 7634 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7635 | { |
2bdf28a0 | 7636 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7637 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7638 | |
4a64f543 MS |
7639 | /* We apply the check to all breakpoints, including disabled for |
7640 | those with loc->duplicate set. This is so that when breakpoint | |
7641 | becomes enabled, or the duplicate is removed, gdb will try to | |
7642 | insert all breakpoints. If we don't set shlib_disabled here, | |
7643 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7644 | if (((b->type == bp_breakpoint) |
508ccb1f | 7645 | || (b->type == bp_jit_event) |
1042e4c0 | 7646 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7647 | || (is_tracepoint (b))) |
6c95b8df | 7648 | && loc->pspace == current_program_space |
0d381245 | 7649 | && !loc->shlib_disabled |
6c95b8df | 7650 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7651 | ) |
0d381245 VP |
7652 | { |
7653 | loc->shlib_disabled = 1; | |
7654 | } | |
cae688ec JJ |
7655 | } |
7656 | } | |
7657 | ||
63644780 NB |
7658 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7659 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7660 | disabled ones can just stay disabled. */ | |
84acb35a | 7661 | |
75149521 | 7662 | static void |
84acb35a JJ |
7663 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7664 | { | |
876fa593 | 7665 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7666 | int disabled_shlib_breaks = 0; |
7667 | ||
876fa593 | 7668 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7669 | { |
2bdf28a0 | 7670 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7671 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7672 | |
1e4d1764 | 7673 | if (solib->pspace == loc->pspace |
e2dd7057 | 7674 | && !loc->shlib_disabled |
1e4d1764 YQ |
7675 | && (((b->type == bp_breakpoint |
7676 | || b->type == bp_jit_event | |
7677 | || b->type == bp_hardware_breakpoint) | |
7678 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7679 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7680 | || is_tracepoint (b)) | |
e2dd7057 | 7681 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7682 | { |
e2dd7057 PP |
7683 | loc->shlib_disabled = 1; |
7684 | /* At this point, we cannot rely on remove_breakpoint | |
7685 | succeeding so we must mark the breakpoint as not inserted | |
7686 | to prevent future errors occurring in remove_breakpoints. */ | |
7687 | loc->inserted = 0; | |
8d3788bd VP |
7688 | |
7689 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7690 | observer_notify_breakpoint_modified (b); | |
7691 | ||
e2dd7057 PP |
7692 | if (!disabled_shlib_breaks) |
7693 | { | |
223ffa71 | 7694 | target_terminal::ours_for_output (); |
3e43a32a MS |
7695 | warning (_("Temporarily disabling breakpoints " |
7696 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7697 | solib->so_name); |
84acb35a | 7698 | } |
e2dd7057 | 7699 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7700 | } |
7701 | } | |
84acb35a JJ |
7702 | } |
7703 | ||
63644780 NB |
7704 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7705 | notification of free_objfile. Only apply to enabled breakpoints, | |
7706 | disabled ones can just stay disabled. */ | |
7707 | ||
7708 | static void | |
7709 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7710 | { | |
7711 | struct breakpoint *b; | |
7712 | ||
7713 | if (objfile == NULL) | |
7714 | return; | |
7715 | ||
d03de421 PA |
7716 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7717 | managed by the user with add-symbol-file/remove-symbol-file. | |
7718 | Similarly to how breakpoints in shared libraries are handled in | |
7719 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7720 | shlib_disabled so they end up uninserted on the next global |
7721 | location list update. Shared libraries not loaded by the user | |
7722 | aren't handled here -- they're already handled in | |
7723 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7724 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7725 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7726 | main objfile). */ | |
7727 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7728 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7729 | return; |
7730 | ||
7731 | ALL_BREAKPOINTS (b) | |
7732 | { | |
7733 | struct bp_location *loc; | |
7734 | int bp_modified = 0; | |
7735 | ||
7736 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7737 | continue; | |
7738 | ||
7739 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7740 | { | |
7741 | CORE_ADDR loc_addr = loc->address; | |
7742 | ||
7743 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7744 | && loc->loc_type != bp_loc_software_breakpoint) | |
7745 | continue; | |
7746 | ||
7747 | if (loc->shlib_disabled != 0) | |
7748 | continue; | |
7749 | ||
7750 | if (objfile->pspace != loc->pspace) | |
7751 | continue; | |
7752 | ||
7753 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7754 | && loc->loc_type != bp_loc_software_breakpoint) | |
7755 | continue; | |
7756 | ||
7757 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7758 | { | |
7759 | loc->shlib_disabled = 1; | |
08351840 PA |
7760 | /* At this point, we don't know whether the object was |
7761 | unmapped from the inferior or not, so leave the | |
7762 | inserted flag alone. We'll handle failure to | |
7763 | uninsert quietly, in case the object was indeed | |
7764 | unmapped. */ | |
63644780 NB |
7765 | |
7766 | mark_breakpoint_location_modified (loc); | |
7767 | ||
7768 | bp_modified = 1; | |
7769 | } | |
7770 | } | |
7771 | ||
7772 | if (bp_modified) | |
7773 | observer_notify_breakpoint_modified (b); | |
7774 | } | |
7775 | } | |
7776 | ||
ce78b96d JB |
7777 | /* FORK & VFORK catchpoints. */ |
7778 | ||
e29a4733 | 7779 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7780 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7781 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7782 | |
c1fc2657 | 7783 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7784 | { |
e29a4733 PA |
7785 | /* Process id of a child process whose forking triggered this |
7786 | catchpoint. This field is only valid immediately after this | |
7787 | catchpoint has triggered. */ | |
7788 | ptid_t forked_inferior_pid; | |
7789 | }; | |
7790 | ||
4a64f543 MS |
7791 | /* Implement the "insert" breakpoint_ops method for fork |
7792 | catchpoints. */ | |
ce78b96d | 7793 | |
77b06cd7 TJB |
7794 | static int |
7795 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7796 | { |
dfd4cc63 | 7797 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7798 | } |
7799 | ||
4a64f543 MS |
7800 | /* Implement the "remove" breakpoint_ops method for fork |
7801 | catchpoints. */ | |
ce78b96d JB |
7802 | |
7803 | static int | |
73971819 | 7804 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7805 | { |
dfd4cc63 | 7806 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7807 | } |
7808 | ||
7809 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7810 | catchpoints. */ | |
7811 | ||
7812 | static int | |
f1310107 | 7813 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7814 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7815 | const struct target_waitstatus *ws) |
ce78b96d | 7816 | { |
e29a4733 PA |
7817 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7818 | ||
f90263c1 TT |
7819 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7820 | return 0; | |
7821 | ||
7822 | c->forked_inferior_pid = ws->value.related_pid; | |
7823 | return 1; | |
ce78b96d JB |
7824 | } |
7825 | ||
4a64f543 MS |
7826 | /* Implement the "print_it" breakpoint_ops method for fork |
7827 | catchpoints. */ | |
ce78b96d JB |
7828 | |
7829 | static enum print_stop_action | |
348d480f | 7830 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7831 | { |
36dfb11c | 7832 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7833 | struct breakpoint *b = bs->breakpoint_at; |
7834 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7835 | |
ce78b96d | 7836 | annotate_catchpoint (b->number); |
f303dbd6 | 7837 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7838 | if (b->disposition == disp_del) |
112e8700 | 7839 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7840 | else |
112e8700 SM |
7841 | uiout->text ("Catchpoint "); |
7842 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7843 | { |
112e8700 SM |
7844 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7845 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7846 | } |
112e8700 SM |
7847 | uiout->field_int ("bkptno", b->number); |
7848 | uiout->text (" (forked process "); | |
7849 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7850 | uiout->text ("), "); | |
ce78b96d JB |
7851 | return PRINT_SRC_AND_LOC; |
7852 | } | |
7853 | ||
4a64f543 MS |
7854 | /* Implement the "print_one" breakpoint_ops method for fork |
7855 | catchpoints. */ | |
ce78b96d JB |
7856 | |
7857 | static void | |
a6d9a66e | 7858 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7859 | { |
e29a4733 | 7860 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7861 | struct value_print_options opts; |
79a45e25 | 7862 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7863 | |
7864 | get_user_print_options (&opts); | |
7865 | ||
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 ("fork"); |
e29a4733 | 7873 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7874 | { |
112e8700 SM |
7875 | uiout->text (", process "); |
7876 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7877 | uiout->spaces (1); | |
ce78b96d | 7878 | } |
8ac3646f | 7879 | |
112e8700 SM |
7880 | if (uiout->is_mi_like_p ()) |
7881 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7882 | } |
7883 | ||
7884 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7885 | catchpoints. */ | |
7886 | ||
7887 | static void | |
7888 | print_mention_catch_fork (struct breakpoint *b) | |
7889 | { | |
7890 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7891 | } | |
7892 | ||
6149aea9 PA |
7893 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7894 | catchpoints. */ | |
7895 | ||
7896 | static void | |
7897 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7898 | { | |
7899 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7900 | print_recreate_thread (b, fp); |
6149aea9 PA |
7901 | } |
7902 | ||
ce78b96d JB |
7903 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7904 | ||
2060206e | 7905 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7906 | |
4a64f543 MS |
7907 | /* Implement the "insert" breakpoint_ops method for vfork |
7908 | catchpoints. */ | |
ce78b96d | 7909 | |
77b06cd7 TJB |
7910 | static int |
7911 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7912 | { |
dfd4cc63 | 7913 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7914 | } |
7915 | ||
4a64f543 MS |
7916 | /* Implement the "remove" breakpoint_ops method for vfork |
7917 | catchpoints. */ | |
ce78b96d JB |
7918 | |
7919 | static int | |
73971819 | 7920 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7921 | { |
dfd4cc63 | 7922 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7923 | } |
7924 | ||
7925 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7926 | catchpoints. */ | |
7927 | ||
7928 | static int | |
f1310107 | 7929 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7930 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7931 | const struct target_waitstatus *ws) |
ce78b96d | 7932 | { |
e29a4733 PA |
7933 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7934 | ||
f90263c1 TT |
7935 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7936 | return 0; | |
7937 | ||
7938 | c->forked_inferior_pid = ws->value.related_pid; | |
7939 | return 1; | |
ce78b96d JB |
7940 | } |
7941 | ||
4a64f543 MS |
7942 | /* Implement the "print_it" breakpoint_ops method for vfork |
7943 | catchpoints. */ | |
ce78b96d JB |
7944 | |
7945 | static enum print_stop_action | |
348d480f | 7946 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7947 | { |
36dfb11c | 7948 | struct ui_out *uiout = current_uiout; |
348d480f | 7949 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7950 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7951 | ||
ce78b96d | 7952 | annotate_catchpoint (b->number); |
f303dbd6 | 7953 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7954 | if (b->disposition == disp_del) |
112e8700 | 7955 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7956 | else |
112e8700 SM |
7957 | uiout->text ("Catchpoint "); |
7958 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7959 | { |
112e8700 SM |
7960 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7961 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7962 | } |
112e8700 SM |
7963 | uiout->field_int ("bkptno", b->number); |
7964 | uiout->text (" (vforked process "); | |
7965 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7966 | uiout->text ("), "); | |
ce78b96d JB |
7967 | return PRINT_SRC_AND_LOC; |
7968 | } | |
7969 | ||
4a64f543 MS |
7970 | /* Implement the "print_one" breakpoint_ops method for vfork |
7971 | catchpoints. */ | |
ce78b96d JB |
7972 | |
7973 | static void | |
a6d9a66e | 7974 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7975 | { |
e29a4733 | 7976 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7977 | struct value_print_options opts; |
79a45e25 | 7978 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7979 | |
7980 | get_user_print_options (&opts); | |
4a64f543 MS |
7981 | /* Field 4, the address, is omitted (which makes the columns not |
7982 | line up too nicely with the headers, but the effect is relatively | |
7983 | readable). */ | |
79a45b7d | 7984 | if (opts.addressprint) |
112e8700 | 7985 | uiout->field_skip ("addr"); |
ce78b96d | 7986 | annotate_field (5); |
112e8700 | 7987 | uiout->text ("vfork"); |
e29a4733 | 7988 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7989 | { |
112e8700 SM |
7990 | uiout->text (", process "); |
7991 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7992 | uiout->spaces (1); | |
ce78b96d | 7993 | } |
8ac3646f | 7994 | |
112e8700 SM |
7995 | if (uiout->is_mi_like_p ()) |
7996 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7997 | } |
7998 | ||
7999 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8000 | catchpoints. */ | |
8001 | ||
8002 | static void | |
8003 | print_mention_catch_vfork (struct breakpoint *b) | |
8004 | { | |
8005 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8006 | } | |
8007 | ||
6149aea9 PA |
8008 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8009 | catchpoints. */ | |
8010 | ||
8011 | static void | |
8012 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8013 | { | |
8014 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8015 | print_recreate_thread (b, fp); |
6149aea9 PA |
8016 | } |
8017 | ||
ce78b96d JB |
8018 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8019 | ||
2060206e | 8020 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8021 | |
edcc5120 | 8022 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 8023 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
8024 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
8025 | ||
c1fc2657 | 8026 | struct solib_catchpoint : public breakpoint |
edcc5120 | 8027 | { |
c1fc2657 | 8028 | ~solib_catchpoint () override; |
edcc5120 TT |
8029 | |
8030 | /* True for "catch load", false for "catch unload". */ | |
8031 | unsigned char is_load; | |
8032 | ||
8033 | /* Regular expression to match, if any. COMPILED is only valid when | |
8034 | REGEX is non-NULL. */ | |
8035 | char *regex; | |
2d7cc5c7 | 8036 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
8037 | }; |
8038 | ||
c1fc2657 | 8039 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 8040 | { |
c1fc2657 | 8041 | xfree (this->regex); |
edcc5120 TT |
8042 | } |
8043 | ||
8044 | static int | |
8045 | insert_catch_solib (struct bp_location *ignore) | |
8046 | { | |
8047 | return 0; | |
8048 | } | |
8049 | ||
8050 | static int | |
73971819 | 8051 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8052 | { |
8053 | return 0; | |
8054 | } | |
8055 | ||
8056 | static int | |
8057 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 8058 | const address_space *aspace, |
edcc5120 TT |
8059 | CORE_ADDR bp_addr, |
8060 | const struct target_waitstatus *ws) | |
8061 | { | |
8062 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8063 | struct breakpoint *other; | |
8064 | ||
8065 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8066 | return 1; | |
8067 | ||
8068 | ALL_BREAKPOINTS (other) | |
8069 | { | |
8070 | struct bp_location *other_bl; | |
8071 | ||
8072 | if (other == bl->owner) | |
8073 | continue; | |
8074 | ||
8075 | if (other->type != bp_shlib_event) | |
8076 | continue; | |
8077 | ||
c1fc2657 | 8078 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8079 | continue; |
8080 | ||
8081 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8082 | { | |
8083 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8084 | return 1; | |
8085 | } | |
8086 | } | |
8087 | ||
8088 | return 0; | |
8089 | } | |
8090 | ||
8091 | static void | |
8092 | check_status_catch_solib (struct bpstats *bs) | |
8093 | { | |
8094 | struct solib_catchpoint *self | |
8095 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8096 | int ix; | |
8097 | ||
8098 | if (self->is_load) | |
8099 | { | |
8100 | struct so_list *iter; | |
8101 | ||
8102 | for (ix = 0; | |
8103 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8104 | ix, iter); | |
8105 | ++ix) | |
8106 | { | |
8107 | if (!self->regex | |
2d7cc5c7 | 8108 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8109 | return; |
8110 | } | |
8111 | } | |
8112 | else | |
8113 | { | |
8114 | char *iter; | |
8115 | ||
8116 | for (ix = 0; | |
8117 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8118 | ix, iter); | |
8119 | ++ix) | |
8120 | { | |
8121 | if (!self->regex | |
2d7cc5c7 | 8122 | || self->compiled->exec (iter, 0, NULL, 0) == 0) |
edcc5120 TT |
8123 | return; |
8124 | } | |
8125 | } | |
8126 | ||
8127 | bs->stop = 0; | |
8128 | bs->print_it = print_it_noop; | |
8129 | } | |
8130 | ||
8131 | static enum print_stop_action | |
8132 | print_it_catch_solib (bpstat bs) | |
8133 | { | |
8134 | struct breakpoint *b = bs->breakpoint_at; | |
8135 | struct ui_out *uiout = current_uiout; | |
8136 | ||
8137 | annotate_catchpoint (b->number); | |
f303dbd6 | 8138 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8139 | if (b->disposition == disp_del) |
112e8700 | 8140 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8141 | else |
112e8700 SM |
8142 | uiout->text ("Catchpoint "); |
8143 | uiout->field_int ("bkptno", b->number); | |
8144 | uiout->text ("\n"); | |
8145 | if (uiout->is_mi_like_p ()) | |
8146 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8147 | print_solib_event (1); |
8148 | return PRINT_SRC_AND_LOC; | |
8149 | } | |
8150 | ||
8151 | static void | |
8152 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8153 | { | |
8154 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8155 | struct value_print_options opts; | |
8156 | struct ui_out *uiout = current_uiout; | |
8157 | char *msg; | |
8158 | ||
8159 | get_user_print_options (&opts); | |
8160 | /* Field 4, the address, is omitted (which makes the columns not | |
8161 | line up too nicely with the headers, but the effect is relatively | |
8162 | readable). */ | |
8163 | if (opts.addressprint) | |
8164 | { | |
8165 | annotate_field (4); | |
112e8700 | 8166 | uiout->field_skip ("addr"); |
edcc5120 TT |
8167 | } |
8168 | ||
8169 | annotate_field (5); | |
8170 | if (self->is_load) | |
8171 | { | |
8172 | if (self->regex) | |
8173 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8174 | else | |
8175 | msg = xstrdup (_("load of library")); | |
8176 | } | |
8177 | else | |
8178 | { | |
8179 | if (self->regex) | |
8180 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8181 | else | |
8182 | msg = xstrdup (_("unload of library")); | |
8183 | } | |
112e8700 | 8184 | uiout->field_string ("what", msg); |
edcc5120 | 8185 | xfree (msg); |
8ac3646f | 8186 | |
112e8700 SM |
8187 | if (uiout->is_mi_like_p ()) |
8188 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8189 | } |
8190 | ||
8191 | static void | |
8192 | print_mention_catch_solib (struct breakpoint *b) | |
8193 | { | |
8194 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8195 | ||
8196 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8197 | self->is_load ? "load" : "unload"); | |
8198 | } | |
8199 | ||
8200 | static void | |
8201 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8202 | { | |
8203 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8204 | ||
8205 | fprintf_unfiltered (fp, "%s %s", | |
8206 | b->disposition == disp_del ? "tcatch" : "catch", | |
8207 | self->is_load ? "load" : "unload"); | |
8208 | if (self->regex) | |
8209 | fprintf_unfiltered (fp, " %s", self->regex); | |
8210 | fprintf_unfiltered (fp, "\n"); | |
8211 | } | |
8212 | ||
8213 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8214 | ||
91985142 MG |
8215 | /* Shared helper function (MI and CLI) for creating and installing |
8216 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8217 | the events to be caught are load events, otherwise they are | |
8218 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8219 | temporary one. If ENABLED is non-zero the catchpoint is | |
8220 | created in an enabled state. */ | |
edcc5120 | 8221 | |
91985142 | 8222 | void |
a121b7c1 | 8223 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8224 | { |
edcc5120 | 8225 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8226 | |
edcc5120 TT |
8227 | if (!arg) |
8228 | arg = ""; | |
f1735a53 | 8229 | arg = skip_spaces (arg); |
edcc5120 | 8230 | |
36bd8eaa | 8231 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8232 | |
8233 | if (*arg != '\0') | |
8234 | { | |
2d7cc5c7 PA |
8235 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8236 | _("Invalid regexp"))); | |
edcc5120 TT |
8237 | c->regex = xstrdup (arg); |
8238 | } | |
8239 | ||
8240 | c->is_load = is_load; | |
36bd8eaa | 8241 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8242 | &catch_solib_breakpoint_ops); |
8243 | ||
c1fc2657 | 8244 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8245 | |
b270e6f9 | 8246 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8247 | } |
8248 | ||
91985142 MG |
8249 | /* A helper function that does all the work for "catch load" and |
8250 | "catch unload". */ | |
8251 | ||
8252 | static void | |
8253 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8254 | struct cmd_list_element *command) | |
8255 | { | |
8256 | int tempflag; | |
8257 | const int enabled = 1; | |
8258 | ||
8259 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8260 | ||
8261 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8262 | } | |
8263 | ||
edcc5120 TT |
8264 | static void |
8265 | catch_load_command_1 (char *arg, int from_tty, | |
8266 | struct cmd_list_element *command) | |
8267 | { | |
8268 | catch_load_or_unload (arg, from_tty, 1, command); | |
8269 | } | |
8270 | ||
8271 | static void | |
8272 | catch_unload_command_1 (char *arg, int from_tty, | |
8273 | struct cmd_list_element *command) | |
8274 | { | |
8275 | catch_load_or_unload (arg, from_tty, 0, command); | |
8276 | } | |
8277 | ||
346774a9 PA |
8278 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8279 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8280 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8281 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8282 | |
ab04a2af | 8283 | void |
346774a9 PA |
8284 | init_catchpoint (struct breakpoint *b, |
8285 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8286 | const char *cond_string, |
c0a91b2b | 8287 | const struct breakpoint_ops *ops) |
c906108c | 8288 | { |
51abb421 | 8289 | symtab_and_line sal; |
6c95b8df | 8290 | sal.pspace = current_program_space; |
c5aa993b | 8291 | |
28010a5d | 8292 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8293 | |
1b36a34b | 8294 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8295 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8296 | } |
8297 | ||
28010a5d | 8298 | void |
b270e6f9 | 8299 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8300 | { |
b270e6f9 | 8301 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8302 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8303 | if (is_tracepoint (b)) |
8304 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8305 | if (!internal) |
8306 | mention (b); | |
c56053d2 | 8307 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8308 | |
8309 | if (update_gll) | |
44702360 | 8310 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8311 | } |
8312 | ||
9b70b993 | 8313 | static void |
a6d9a66e | 8314 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8315 | int tempflag, const char *cond_string, |
c0a91b2b | 8316 | const struct breakpoint_ops *ops) |
c906108c | 8317 | { |
b270e6f9 | 8318 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8319 | |
b270e6f9 | 8320 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8321 | |
8322 | c->forked_inferior_pid = null_ptid; | |
8323 | ||
b270e6f9 | 8324 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8325 | } |
8326 | ||
fe798b75 JB |
8327 | /* Exec catchpoints. */ |
8328 | ||
b4d90040 | 8329 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8330 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8331 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8332 | ||
c1fc2657 | 8333 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8334 | { |
c1fc2657 | 8335 | ~exec_catchpoint () override; |
b4d90040 PA |
8336 | |
8337 | /* Filename of a program whose exec triggered this catchpoint. | |
8338 | This field is only valid immediately after this catchpoint has | |
8339 | triggered. */ | |
8340 | char *exec_pathname; | |
8341 | }; | |
8342 | ||
c1fc2657 | 8343 | /* Exec catchpoint destructor. */ |
b4d90040 | 8344 | |
c1fc2657 | 8345 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8346 | { |
c1fc2657 | 8347 | xfree (this->exec_pathname); |
b4d90040 PA |
8348 | } |
8349 | ||
77b06cd7 TJB |
8350 | static int |
8351 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8352 | { |
dfd4cc63 | 8353 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8354 | } |
c906108c | 8355 | |
fe798b75 | 8356 | static int |
73971819 | 8357 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8358 | { |
dfd4cc63 | 8359 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8360 | } |
c906108c | 8361 | |
fe798b75 | 8362 | static int |
f1310107 | 8363 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8364 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8365 | const struct target_waitstatus *ws) |
fe798b75 | 8366 | { |
b4d90040 PA |
8367 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8368 | ||
f90263c1 TT |
8369 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8370 | return 0; | |
8371 | ||
8372 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8373 | return 1; | |
fe798b75 | 8374 | } |
c906108c | 8375 | |
fe798b75 | 8376 | static enum print_stop_action |
348d480f | 8377 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8378 | { |
36dfb11c | 8379 | struct ui_out *uiout = current_uiout; |
348d480f | 8380 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8381 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8382 | ||
fe798b75 | 8383 | annotate_catchpoint (b->number); |
f303dbd6 | 8384 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8385 | if (b->disposition == disp_del) |
112e8700 | 8386 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8387 | else |
112e8700 SM |
8388 | uiout->text ("Catchpoint "); |
8389 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8390 | { |
112e8700 SM |
8391 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8392 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8393 | } |
112e8700 SM |
8394 | uiout->field_int ("bkptno", b->number); |
8395 | uiout->text (" (exec'd "); | |
8396 | uiout->field_string ("new-exec", c->exec_pathname); | |
8397 | uiout->text ("), "); | |
36dfb11c | 8398 | |
fe798b75 | 8399 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8400 | } |
8401 | ||
fe798b75 | 8402 | static void |
a6d9a66e | 8403 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8404 | { |
b4d90040 | 8405 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8406 | struct value_print_options opts; |
79a45e25 | 8407 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8408 | |
8409 | get_user_print_options (&opts); | |
8410 | ||
8411 | /* Field 4, the address, is omitted (which makes the columns | |
8412 | not line up too nicely with the headers, but the effect | |
8413 | is relatively readable). */ | |
8414 | if (opts.addressprint) | |
112e8700 | 8415 | uiout->field_skip ("addr"); |
fe798b75 | 8416 | annotate_field (5); |
112e8700 | 8417 | uiout->text ("exec"); |
b4d90040 | 8418 | if (c->exec_pathname != NULL) |
fe798b75 | 8419 | { |
112e8700 SM |
8420 | uiout->text (", program \""); |
8421 | uiout->field_string ("what", c->exec_pathname); | |
8422 | uiout->text ("\" "); | |
fe798b75 | 8423 | } |
8ac3646f | 8424 | |
112e8700 SM |
8425 | if (uiout->is_mi_like_p ()) |
8426 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8427 | } |
8428 | ||
8429 | static void | |
8430 | print_mention_catch_exec (struct breakpoint *b) | |
8431 | { | |
8432 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8433 | } | |
8434 | ||
6149aea9 PA |
8435 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8436 | catchpoints. */ | |
8437 | ||
8438 | static void | |
8439 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8440 | { | |
8441 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8442 | print_recreate_thread (b, fp); |
6149aea9 PA |
8443 | } |
8444 | ||
2060206e | 8445 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8446 | |
c906108c | 8447 | static int |
fba45db2 | 8448 | hw_breakpoint_used_count (void) |
c906108c | 8449 | { |
c906108c | 8450 | int i = 0; |
f1310107 TJB |
8451 | struct breakpoint *b; |
8452 | struct bp_location *bl; | |
c906108c SS |
8453 | |
8454 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8455 | { |
d6b74ac4 | 8456 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8457 | for (bl = b->loc; bl; bl = bl->next) |
8458 | { | |
8459 | /* Special types of hardware breakpoints may use more than | |
8460 | one register. */ | |
348d480f | 8461 | i += b->ops->resources_needed (bl); |
f1310107 | 8462 | } |
c5aa993b | 8463 | } |
c906108c SS |
8464 | |
8465 | return i; | |
8466 | } | |
8467 | ||
a1398e0c PA |
8468 | /* Returns the resources B would use if it were a hardware |
8469 | watchpoint. */ | |
8470 | ||
c906108c | 8471 | static int |
a1398e0c | 8472 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8473 | { |
c906108c | 8474 | int i = 0; |
e09342b5 | 8475 | struct bp_location *bl; |
c906108c | 8476 | |
a1398e0c PA |
8477 | if (!breakpoint_enabled (b)) |
8478 | return 0; | |
8479 | ||
8480 | for (bl = b->loc; bl; bl = bl->next) | |
8481 | { | |
8482 | /* Special types of hardware watchpoints may use more than | |
8483 | one register. */ | |
8484 | i += b->ops->resources_needed (bl); | |
8485 | } | |
8486 | ||
8487 | return i; | |
8488 | } | |
8489 | ||
8490 | /* Returns the sum the used resources of all hardware watchpoints of | |
8491 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8492 | the sum of the used resources of all hardware watchpoints of other | |
8493 | types _not_ TYPE. */ | |
8494 | ||
8495 | static int | |
8496 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8497 | enum bptype type, int *other_type_used) | |
8498 | { | |
8499 | int i = 0; | |
8500 | struct breakpoint *b; | |
8501 | ||
c906108c SS |
8502 | *other_type_used = 0; |
8503 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8504 | { |
a1398e0c PA |
8505 | if (b == except) |
8506 | continue; | |
e09342b5 TJB |
8507 | if (!breakpoint_enabled (b)) |
8508 | continue; | |
8509 | ||
a1398e0c PA |
8510 | if (b->type == type) |
8511 | i += hw_watchpoint_use_count (b); | |
8512 | else if (is_hardware_watchpoint (b)) | |
8513 | *other_type_used = 1; | |
e09342b5 TJB |
8514 | } |
8515 | ||
c906108c SS |
8516 | return i; |
8517 | } | |
8518 | ||
c906108c | 8519 | void |
fba45db2 | 8520 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8521 | { |
c5aa993b | 8522 | struct breakpoint *b; |
c906108c SS |
8523 | |
8524 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8525 | { |
cc60f2e3 | 8526 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8527 | { |
b5de0fa7 | 8528 | b->enable_state = bp_call_disabled; |
44702360 | 8529 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8530 | } |
8531 | } | |
c906108c SS |
8532 | } |
8533 | ||
8534 | void | |
fba45db2 | 8535 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8536 | { |
c5aa993b | 8537 | struct breakpoint *b; |
c906108c SS |
8538 | |
8539 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8540 | { |
cc60f2e3 | 8541 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8542 | { |
b5de0fa7 | 8543 | b->enable_state = bp_enabled; |
44702360 | 8544 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8545 | } |
8546 | } | |
c906108c SS |
8547 | } |
8548 | ||
8bea4e01 UW |
8549 | void |
8550 | disable_breakpoints_before_startup (void) | |
8551 | { | |
6c95b8df | 8552 | current_program_space->executing_startup = 1; |
44702360 | 8553 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8554 | } |
8555 | ||
8556 | void | |
8557 | enable_breakpoints_after_startup (void) | |
8558 | { | |
6c95b8df | 8559 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8560 | breakpoint_re_set (); |
8bea4e01 UW |
8561 | } |
8562 | ||
7c16b83e PA |
8563 | /* Create a new single-step breakpoint for thread THREAD, with no |
8564 | locations. */ | |
c906108c | 8565 | |
7c16b83e PA |
8566 | static struct breakpoint * |
8567 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8568 | { | |
b270e6f9 | 8569 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8570 | |
b270e6f9 | 8571 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8572 | &momentary_breakpoint_ops); |
8573 | ||
8574 | b->disposition = disp_donttouch; | |
8575 | b->frame_id = null_frame_id; | |
8576 | ||
8577 | b->thread = thread; | |
8578 | gdb_assert (b->thread != 0); | |
8579 | ||
b270e6f9 | 8580 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8581 | } |
8582 | ||
8583 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8584 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8585 | frame. */ | |
c906108c SS |
8586 | |
8587 | struct breakpoint * | |
a6d9a66e UW |
8588 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8589 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8590 | { |
52f0bd74 | 8591 | struct breakpoint *b; |
edb3359d | 8592 | |
193facb3 JK |
8593 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8594 | tail-called one. */ | |
8595 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8596 | |
06edf0c0 | 8597 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8598 | b->enable_state = bp_enabled; |
8599 | b->disposition = disp_donttouch; | |
818dd999 | 8600 | b->frame_id = frame_id; |
c906108c | 8601 | |
4a64f543 MS |
8602 | /* If we're debugging a multi-threaded program, then we want |
8603 | momentary breakpoints to be active in only a single thread of | |
8604 | control. */ | |
39f77062 | 8605 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8606 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8607 | |
44702360 | 8608 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8609 | |
c906108c SS |
8610 | return b; |
8611 | } | |
611c83ae | 8612 | |
06edf0c0 | 8613 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8614 | The new breakpoint will have type TYPE, use OPS as its |
8615 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8616 | |
06edf0c0 PA |
8617 | static struct breakpoint * |
8618 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8619 | enum bptype type, | |
a1aa2221 LM |
8620 | const struct breakpoint_ops *ops, |
8621 | int loc_enabled) | |
e58b0e63 PA |
8622 | { |
8623 | struct breakpoint *copy; | |
8624 | ||
06edf0c0 | 8625 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8626 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8627 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8628 | |
a6d9a66e | 8629 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8630 | copy->loc->requested_address = orig->loc->requested_address; |
8631 | copy->loc->address = orig->loc->address; | |
8632 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8633 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8634 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8635 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8636 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8637 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8638 | copy->frame_id = orig->frame_id; |
8639 | copy->thread = orig->thread; | |
6c95b8df | 8640 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8641 | |
8642 | copy->enable_state = bp_enabled; | |
8643 | copy->disposition = disp_donttouch; | |
8644 | copy->number = internal_breakpoint_number--; | |
8645 | ||
44702360 | 8646 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8647 | return copy; |
8648 | } | |
8649 | ||
06edf0c0 PA |
8650 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8651 | ORIG is NULL. */ | |
8652 | ||
8653 | struct breakpoint * | |
8654 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8655 | { | |
8656 | /* If there's nothing to clone, then return nothing. */ | |
8657 | if (orig == NULL) | |
8658 | return NULL; | |
8659 | ||
a1aa2221 | 8660 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8661 | } |
8662 | ||
611c83ae | 8663 | struct breakpoint * |
a6d9a66e UW |
8664 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8665 | enum bptype type) | |
611c83ae PA |
8666 | { |
8667 | struct symtab_and_line sal; | |
8668 | ||
8669 | sal = find_pc_line (pc, 0); | |
8670 | sal.pc = pc; | |
8671 | sal.section = find_pc_overlay (pc); | |
8672 | sal.explicit_pc = 1; | |
8673 | ||
a6d9a66e | 8674 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8675 | } |
c906108c | 8676 | \f |
c5aa993b | 8677 | |
c906108c SS |
8678 | /* Tell the user we have just set a breakpoint B. */ |
8679 | ||
8680 | static void | |
fba45db2 | 8681 | mention (struct breakpoint *b) |
c906108c | 8682 | { |
348d480f | 8683 | b->ops->print_mention (b); |
112e8700 | 8684 | if (current_uiout->is_mi_like_p ()) |
fb40c209 | 8685 | return; |
c906108c SS |
8686 | printf_filtered ("\n"); |
8687 | } | |
c906108c | 8688 | \f |
c5aa993b | 8689 | |
1a853c52 PA |
8690 | static int bp_loc_is_permanent (struct bp_location *loc); |
8691 | ||
0d381245 | 8692 | static struct bp_location * |
39d61571 | 8693 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8694 | const struct symtab_and_line *sal) |
8695 | { | |
8696 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8697 | CORE_ADDR adjusted_address; |
8698 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8699 | ||
8700 | if (loc_gdbarch == NULL) | |
8701 | loc_gdbarch = b->gdbarch; | |
8702 | ||
8703 | /* Adjust the breakpoint's address prior to allocating a location. | |
8704 | Once we call allocate_bp_location(), that mostly uninitialized | |
8705 | location will be placed on the location chain. Adjustment of the | |
8706 | breakpoint may cause target_read_memory() to be called and we do | |
8707 | not want its scan of the location chain to find a breakpoint and | |
8708 | location that's only been partially initialized. */ | |
8709 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8710 | sal->pc, b->type); | |
0d381245 | 8711 | |
d30113d4 | 8712 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8713 | loc = allocate_bp_location (b); |
d30113d4 JK |
8714 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8715 | tmp = &((*tmp)->next)) | |
0d381245 | 8716 | ; |
d30113d4 | 8717 | loc->next = *tmp; |
0d381245 | 8718 | *tmp = loc; |
3742cc8b | 8719 | |
0d381245 | 8720 | loc->requested_address = sal->pc; |
3742cc8b | 8721 | loc->address = adjusted_address; |
6c95b8df | 8722 | loc->pspace = sal->pspace; |
729662a5 TT |
8723 | loc->probe.probe = sal->probe; |
8724 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8725 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8726 | loc->section = sal->section; |
3742cc8b | 8727 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8728 | loc->line_number = sal->line; |
2f202fde | 8729 | loc->symtab = sal->symtab; |
4a27f119 | 8730 | loc->symbol = sal->symbol; |
f8eba3c6 | 8731 | |
0e30163f JK |
8732 | set_breakpoint_location_function (loc, |
8733 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8734 | |
6ae88661 LM |
8735 | /* While by definition, permanent breakpoints are already present in the |
8736 | code, we don't mark the location as inserted. Normally one would expect | |
8737 | that GDB could rely on that breakpoint instruction to stop the program, | |
8738 | thus removing the need to insert its own breakpoint, except that executing | |
8739 | the breakpoint instruction can kill the target instead of reporting a | |
8740 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8741 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8742 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8743 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8744 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8745 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8746 | it manually increments the PC, thus avoiding executing the breakpoint | |
8747 | instruction.) */ | |
1a853c52 | 8748 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8749 | loc->permanent = 1; |
1a853c52 | 8750 | |
0d381245 VP |
8751 | return loc; |
8752 | } | |
514f746b AR |
8753 | \f |
8754 | ||
1cf4d951 | 8755 | /* See breakpoint.h. */ |
514f746b | 8756 | |
1cf4d951 PA |
8757 | int |
8758 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8759 | { |
8760 | int len; | |
8761 | CORE_ADDR addr; | |
1afeeb75 | 8762 | const gdb_byte *bpoint; |
514f746b AR |
8763 | gdb_byte *target_mem; |
8764 | ||
1cf4d951 PA |
8765 | addr = address; |
8766 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8767 | ||
8768 | /* Software breakpoints unsupported? */ | |
8769 | if (bpoint == NULL) | |
8770 | return 0; | |
8771 | ||
224c3ddb | 8772 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8773 | |
8774 | /* Enable the automatic memory restoration from breakpoints while | |
8775 | we read the memory. Otherwise we could say about our temporary | |
8776 | breakpoints they are permanent. */ | |
cb85b21b TT |
8777 | scoped_restore restore_memory |
8778 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8779 | |
8780 | if (target_read_memory (address, target_mem, len) == 0 | |
8781 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8782 | return 1; |
1cf4d951 | 8783 | |
cb85b21b | 8784 | return 0; |
1cf4d951 PA |
8785 | } |
8786 | ||
8787 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8788 | return 0 otherwise. */ | |
8789 | ||
8790 | static int | |
8791 | bp_loc_is_permanent (struct bp_location *loc) | |
8792 | { | |
514f746b AR |
8793 | gdb_assert (loc != NULL); |
8794 | ||
244558af LM |
8795 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8796 | attempt to read from the addresses the locations of these breakpoint types | |
8797 | point to. program_breakpoint_here_p, below, will attempt to read | |
8798 | memory. */ | |
8799 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8800 | return 0; | |
8801 | ||
5ed8105e | 8802 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8803 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8804 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8805 | } |
8806 | ||
e7e0cddf SS |
8807 | /* Build a command list for the dprintf corresponding to the current |
8808 | settings of the dprintf style options. */ | |
8809 | ||
8810 | static void | |
8811 | update_dprintf_command_list (struct breakpoint *b) | |
8812 | { | |
8813 | char *dprintf_args = b->extra_string; | |
8814 | char *printf_line = NULL; | |
8815 | ||
8816 | if (!dprintf_args) | |
8817 | return; | |
8818 | ||
8819 | dprintf_args = skip_spaces (dprintf_args); | |
8820 | ||
8821 | /* Allow a comma, as it may have terminated a location, but don't | |
8822 | insist on it. */ | |
8823 | if (*dprintf_args == ',') | |
8824 | ++dprintf_args; | |
8825 | dprintf_args = skip_spaces (dprintf_args); | |
8826 | ||
8827 | if (*dprintf_args != '"') | |
8828 | error (_("Bad format string, missing '\"'.")); | |
8829 | ||
d3ce09f5 | 8830 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8831 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8832 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8833 | { |
8834 | if (!dprintf_function) | |
8835 | error (_("No function supplied for dprintf call")); | |
8836 | ||
8837 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8838 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8839 | dprintf_function, | |
8840 | dprintf_channel, | |
8841 | dprintf_args); | |
8842 | else | |
8843 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8844 | dprintf_function, | |
8845 | dprintf_args); | |
8846 | } | |
d3ce09f5 SS |
8847 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8848 | { | |
8849 | if (target_can_run_breakpoint_commands ()) | |
8850 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8851 | else | |
8852 | { | |
8853 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8854 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8855 | } | |
8856 | } | |
e7e0cddf SS |
8857 | else |
8858 | internal_error (__FILE__, __LINE__, | |
8859 | _("Invalid dprintf style.")); | |
8860 | ||
f28045c2 | 8861 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8862 | /* Manufacture a printf sequence. */ |
f28045c2 | 8863 | { |
8d749320 | 8864 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8865 | |
f28045c2 YQ |
8866 | printf_cmd_line->control_type = simple_control; |
8867 | printf_cmd_line->body_count = 0; | |
8868 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8869 | printf_cmd_line->next = NULL; |
f28045c2 | 8870 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8871 | |
93921405 | 8872 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8873 | } |
e7e0cddf SS |
8874 | } |
8875 | ||
8876 | /* Update all dprintf commands, making their command lists reflect | |
8877 | current style settings. */ | |
8878 | ||
8879 | static void | |
8880 | update_dprintf_commands (char *args, int from_tty, | |
8881 | struct cmd_list_element *c) | |
8882 | { | |
8883 | struct breakpoint *b; | |
8884 | ||
8885 | ALL_BREAKPOINTS (b) | |
8886 | { | |
8887 | if (b->type == bp_dprintf) | |
8888 | update_dprintf_command_list (b); | |
8889 | } | |
8890 | } | |
c3f6f71d | 8891 | |
f00aae0f KS |
8892 | /* Create a breakpoint with SAL as location. Use LOCATION |
8893 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8894 | as condition expression. If LOCATION is NULL then create an |
8895 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8896 | |
8897 | static void | |
d9b3f62e | 8898 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8899 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8900 | event_location_up &&location, |
e1e01040 PA |
8901 | gdb::unique_xmalloc_ptr<char> filter, |
8902 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8903 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8904 | enum bptype type, enum bpdisp disposition, |
8905 | int thread, int task, int ignore_count, | |
c0a91b2b | 8906 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8907 | int enabled, int internal, unsigned flags, |
8908 | int display_canonical) | |
018d34a4 | 8909 | { |
0d381245 | 8910 | int i; |
018d34a4 VP |
8911 | |
8912 | if (type == bp_hardware_breakpoint) | |
8913 | { | |
fbbd034e AS |
8914 | int target_resources_ok; |
8915 | ||
8916 | i = hw_breakpoint_used_count (); | |
8917 | target_resources_ok = | |
8918 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8919 | i + 1, 0); |
8920 | if (target_resources_ok == 0) | |
8921 | error (_("No hardware breakpoint support in the target.")); | |
8922 | else if (target_resources_ok < 0) | |
8923 | error (_("Hardware breakpoints used exceeds limit.")); | |
8924 | } | |
8925 | ||
6c5b2ebe | 8926 | gdb_assert (!sals.empty ()); |
6c95b8df | 8927 | |
6c5b2ebe | 8928 | for (const auto &sal : sals) |
0d381245 | 8929 | { |
0d381245 VP |
8930 | struct bp_location *loc; |
8931 | ||
8932 | if (from_tty) | |
5af949e3 UW |
8933 | { |
8934 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8935 | if (!loc_gdbarch) | |
8936 | loc_gdbarch = gdbarch; | |
8937 | ||
8938 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8939 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8940 | } |
0d381245 | 8941 | |
6c5b2ebe | 8942 | if (&sal == &sals[0]) |
0d381245 | 8943 | { |
d9b3f62e | 8944 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8945 | b->thread = thread; |
4a306c9a | 8946 | b->task = task; |
855a6e68 | 8947 | |
e1e01040 PA |
8948 | b->cond_string = cond_string.release (); |
8949 | b->extra_string = extra_string.release (); | |
0d381245 | 8950 | b->ignore_count = ignore_count; |
41447f92 | 8951 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8952 | b->disposition = disposition; |
6c95b8df | 8953 | |
44f238bb PA |
8954 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8955 | b->loc->inserted = 1; | |
8956 | ||
0fb4aa4b PA |
8957 | if (type == bp_static_tracepoint) |
8958 | { | |
d9b3f62e | 8959 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8960 | struct static_tracepoint_marker marker; |
8961 | ||
983af33b | 8962 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8963 | { |
8964 | /* We already know the marker exists, otherwise, we | |
8965 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8966 | const char *p |
8967 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8968 | const char *endp; |
0fb4aa4b | 8969 | char *marker_str; |
0fb4aa4b | 8970 | |
f1735a53 | 8971 | p = skip_spaces (p); |
0fb4aa4b | 8972 | |
f1735a53 | 8973 | endp = skip_to_space (p); |
0fb4aa4b PA |
8974 | |
8975 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8976 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8977 | |
3e43a32a MS |
8978 | printf_filtered (_("Probed static tracepoint " |
8979 | "marker \"%s\"\n"), | |
d9b3f62e | 8980 | t->static_trace_marker_id); |
0fb4aa4b PA |
8981 | } |
8982 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8983 | { | |
d9b3f62e | 8984 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8985 | release_static_tracepoint_marker (&marker); |
8986 | ||
3e43a32a MS |
8987 | printf_filtered (_("Probed static tracepoint " |
8988 | "marker \"%s\"\n"), | |
d9b3f62e | 8989 | t->static_trace_marker_id); |
0fb4aa4b PA |
8990 | } |
8991 | else | |
3e43a32a MS |
8992 | warning (_("Couldn't determine the static " |
8993 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8994 | } |
8995 | ||
0d381245 VP |
8996 | loc = b->loc; |
8997 | } | |
8998 | else | |
018d34a4 | 8999 | { |
39d61571 | 9000 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9001 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9002 | loc->inserted = 1; | |
0d381245 VP |
9003 | } |
9004 | ||
9005 | if (b->cond_string) | |
9006 | { | |
bbc13ae3 KS |
9007 | const char *arg = b->cond_string; |
9008 | ||
1bb9788d TT |
9009 | loc->cond = parse_exp_1 (&arg, loc->address, |
9010 | block_for_pc (loc->address), 0); | |
0d381245 | 9011 | if (*arg) |
588ae58c | 9012 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9013 | } |
e7e0cddf SS |
9014 | |
9015 | /* Dynamic printf requires and uses additional arguments on the | |
9016 | command line, otherwise it's an error. */ | |
9017 | if (type == bp_dprintf) | |
9018 | { | |
9019 | if (b->extra_string) | |
9020 | update_dprintf_command_list (b); | |
9021 | else | |
9022 | error (_("Format string required")); | |
9023 | } | |
9024 | else if (b->extra_string) | |
588ae58c | 9025 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9026 | } |
018d34a4 | 9027 | |
56435ebe | 9028 | b->display_canonical = display_canonical; |
f00aae0f | 9029 | if (location != NULL) |
d28cd78a | 9030 | b->location = std::move (location); |
018d34a4 | 9031 | else |
d28cd78a | 9032 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 9033 | b->filter = filter.release (); |
d9b3f62e | 9034 | } |
018d34a4 | 9035 | |
d9b3f62e PA |
9036 | static void |
9037 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 9038 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 9039 | event_location_up &&location, |
e1e01040 PA |
9040 | gdb::unique_xmalloc_ptr<char> filter, |
9041 | gdb::unique_xmalloc_ptr<char> cond_string, | |
9042 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
9043 | enum bptype type, enum bpdisp disposition, |
9044 | int thread, int task, int ignore_count, | |
c0a91b2b | 9045 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9046 | int enabled, int internal, unsigned flags, |
9047 | int display_canonical) | |
d9b3f62e | 9048 | { |
a5e364af | 9049 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 9050 | |
a5e364af | 9051 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 9052 | sals, std::move (location), |
e1e01040 PA |
9053 | std::move (filter), |
9054 | std::move (cond_string), | |
9055 | std::move (extra_string), | |
d9b3f62e PA |
9056 | type, disposition, |
9057 | thread, task, ignore_count, | |
9058 | ops, from_tty, | |
44f238bb PA |
9059 | enabled, internal, flags, |
9060 | display_canonical); | |
d9b3f62e | 9061 | |
b270e6f9 | 9062 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9063 | } |
9064 | ||
9065 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9066 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9067 | value. COND_STRING, if not NULL, specified the condition to be | |
9068 | used for all breakpoints. Essentially the only case where | |
9069 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9070 | function. In that case, it's still not possible to specify | |
9071 | separate conditions for different overloaded functions, so | |
9072 | we take just a single condition string. | |
9073 | ||
c3f6f71d | 9074 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9075 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9076 | array contents). If the function fails (error() is called), the |
9077 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9078 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9079 | |
9080 | static void | |
8cdf0e15 | 9081 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9082 | struct linespec_result *canonical, |
e1e01040 PA |
9083 | gdb::unique_xmalloc_ptr<char> cond_string, |
9084 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9085 | enum bptype type, enum bpdisp disposition, |
9086 | int thread, int task, int ignore_count, | |
c0a91b2b | 9087 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9088 | int enabled, int internal, unsigned flags) |
c906108c | 9089 | { |
f8eba3c6 | 9090 | if (canonical->pre_expanded) |
6c5b2ebe | 9091 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9092 | |
6c5b2ebe | 9093 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9094 | { |
f00aae0f | 9095 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9096 | 'break', without arguments. */ |
ffc2605c | 9097 | event_location_up location |
f00aae0f | 9098 | = (canonical->location != NULL |
8e9e35b1 | 9099 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9100 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9101 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9102 | |
6c5b2ebe | 9103 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9104 | std::move (location), |
e1e01040 PA |
9105 | std::move (filter_string), |
9106 | std::move (cond_string), | |
9107 | std::move (extra_string), | |
e7e0cddf | 9108 | type, disposition, |
84f4c1fe | 9109 | thread, task, ignore_count, ops, |
44f238bb | 9110 | from_tty, enabled, internal, flags, |
56435ebe | 9111 | canonical->special_display); |
c3f6f71d | 9112 | } |
c3f6f71d | 9113 | } |
c906108c | 9114 | |
f00aae0f | 9115 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9116 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9117 | addresses found. LOCATION points to the end of the SAL (for |
9118 | linespec locations). | |
9998af43 TJB |
9119 | |
9120 | The array and the line spec strings are allocated on the heap, it is | |
9121 | the caller's responsibility to free them. */ | |
c906108c | 9122 | |
b9362cc7 | 9123 | static void |
f00aae0f | 9124 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9125 | struct linespec_result *canonical) |
c3f6f71d | 9126 | { |
f00aae0f KS |
9127 | struct symtab_and_line cursal; |
9128 | ||
9129 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9130 | { | |
9131 | const char *address = get_linespec_location (location); | |
9132 | ||
9133 | if (address == NULL) | |
9134 | { | |
9135 | /* The last displayed codepoint, if it's valid, is our default | |
9136 | breakpoint address. */ | |
9137 | if (last_displayed_sal_is_valid ()) | |
9138 | { | |
f00aae0f KS |
9139 | /* Set sal's pspace, pc, symtab, and line to the values |
9140 | corresponding to the last call to print_frame_info. | |
9141 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9142 | as the breakpoint line number is inappropriate otherwise. | |
9143 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9144 | symtab_and_line sal = get_last_displayed_sal (); |
9145 | CORE_ADDR pc = sal.pc; | |
9146 | ||
f00aae0f KS |
9147 | sal = find_pc_line (pc, 0); |
9148 | ||
9149 | /* "break" without arguments is equivalent to "break *PC" | |
9150 | where PC is the last displayed codepoint's address. So | |
9151 | make sure to set sal.explicit_pc to prevent GDB from | |
9152 | trying to expand the list of sals to include all other | |
9153 | instances with the same symtab and line. */ | |
9154 | sal.pc = pc; | |
9155 | sal.explicit_pc = 1; | |
9156 | ||
6c5b2ebe PA |
9157 | struct linespec_sals lsal; |
9158 | lsal.sals = {sal}; | |
f00aae0f KS |
9159 | lsal.canonical = NULL; |
9160 | ||
6c5b2ebe | 9161 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9162 | return; |
9163 | } | |
9164 | else | |
9165 | error (_("No default breakpoint address now.")); | |
c906108c | 9166 | } |
c906108c | 9167 | } |
f00aae0f KS |
9168 | |
9169 | /* Force almost all breakpoints to be in terms of the | |
9170 | current_source_symtab (which is decode_line_1's default). | |
9171 | This should produce the results we want almost all of the | |
9172 | time while leaving default_breakpoint_* alone. | |
9173 | ||
9174 | ObjC: However, don't match an Objective-C method name which | |
9175 | may have a '+' or '-' succeeded by a '['. */ | |
9176 | cursal = get_current_source_symtab_and_line (); | |
9177 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9178 | { |
f00aae0f | 9179 | const char *address = NULL; |
cc80f267 | 9180 | |
f00aae0f KS |
9181 | if (event_location_type (location) == LINESPEC_LOCATION) |
9182 | address = get_linespec_location (location); | |
cc80f267 | 9183 | |
f00aae0f KS |
9184 | if (!cursal.symtab |
9185 | || (address != NULL | |
9186 | && strchr ("+-", address[0]) != NULL | |
9187 | && address[1] != '[')) | |
9188 | { | |
c2f4122d | 9189 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9190 | get_last_displayed_symtab (), |
9191 | get_last_displayed_line (), | |
9192 | canonical, NULL, NULL); | |
9193 | return; | |
9194 | } | |
c906108c | 9195 | } |
f00aae0f | 9196 | |
c2f4122d | 9197 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9198 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9199 | } |
c906108c | 9200 | |
c906108c | 9201 | |
c3f6f71d | 9202 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9203 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9204 | |
b9362cc7 | 9205 | static void |
6c5b2ebe | 9206 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9207 | { |
6c5b2ebe PA |
9208 | for (auto &sal : sals) |
9209 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9210 | } |
9211 | ||
7a697b8d SS |
9212 | /* Fast tracepoints may have restrictions on valid locations. For |
9213 | instance, a fast tracepoint using a jump instead of a trap will | |
9214 | likely have to overwrite more bytes than a trap would, and so can | |
9215 | only be placed where the instruction is longer than the jump, or a | |
9216 | multi-instruction sequence does not have a jump into the middle of | |
9217 | it, etc. */ | |
9218 | ||
9219 | static void | |
9220 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9221 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9222 | { |
6c5b2ebe | 9223 | int rslt; |
7a697b8d SS |
9224 | char *msg; |
9225 | struct cleanup *old_chain; | |
9226 | ||
6c5b2ebe | 9227 | for (const auto &sal : sals) |
7a697b8d | 9228 | { |
f8eba3c6 TT |
9229 | struct gdbarch *sarch; |
9230 | ||
6c5b2ebe | 9231 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9232 | /* We fall back to GDBARCH if there is no architecture |
9233 | associated with SAL. */ | |
9234 | if (sarch == NULL) | |
9235 | sarch = gdbarch; | |
6c5b2ebe | 9236 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg); |
7a697b8d SS |
9237 | old_chain = make_cleanup (xfree, msg); |
9238 | ||
9239 | if (!rslt) | |
53c3572a | 9240 | error (_("May not have a fast tracepoint at %s%s"), |
6c5b2ebe | 9241 | paddress (sarch, sal.pc), (msg ? msg : "")); |
7a697b8d SS |
9242 | |
9243 | do_cleanups (old_chain); | |
9244 | } | |
9245 | } | |
9246 | ||
018d34a4 VP |
9247 | /* Given TOK, a string specification of condition and thread, as |
9248 | accepted by the 'break' command, extract the condition | |
9249 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9250 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9251 | If no condition is found, *COND_STRING is set to NULL. |
9252 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9253 | |
9254 | static void | |
bbc13ae3 | 9255 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9256 | char **cond_string, int *thread, int *task, |
9257 | char **rest) | |
018d34a4 VP |
9258 | { |
9259 | *cond_string = NULL; | |
9260 | *thread = -1; | |
ed1d1739 KS |
9261 | *task = 0; |
9262 | *rest = NULL; | |
9263 | ||
018d34a4 VP |
9264 | while (tok && *tok) |
9265 | { | |
bbc13ae3 | 9266 | const char *end_tok; |
018d34a4 | 9267 | int toklen; |
bbc13ae3 KS |
9268 | const char *cond_start = NULL; |
9269 | const char *cond_end = NULL; | |
cc59ec59 | 9270 | |
f1735a53 | 9271 | tok = skip_spaces (tok); |
e7e0cddf SS |
9272 | |
9273 | if ((*tok == '"' || *tok == ',') && rest) | |
9274 | { | |
9275 | *rest = savestring (tok, strlen (tok)); | |
9276 | return; | |
9277 | } | |
9278 | ||
f1735a53 | 9279 | end_tok = skip_to_space (tok); |
d634f2de | 9280 | |
018d34a4 | 9281 | toklen = end_tok - tok; |
d634f2de | 9282 | |
018d34a4 VP |
9283 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9284 | { | |
9285 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9286 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9287 | cond_end = tok; |
d634f2de | 9288 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9289 | } |
9290 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9291 | { | |
5d5658a1 PA |
9292 | const char *tmptok; |
9293 | struct thread_info *thr; | |
d634f2de | 9294 | |
018d34a4 | 9295 | tok = end_tok + 1; |
5d5658a1 | 9296 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9297 | if (tok == tmptok) |
9298 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9299 | *thread = thr->global_num; |
bbc13ae3 | 9300 | tok = tmptok; |
018d34a4 | 9301 | } |
4a306c9a JB |
9302 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9303 | { | |
9304 | char *tmptok; | |
9305 | ||
9306 | tok = end_tok + 1; | |
bbc13ae3 | 9307 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9308 | if (tok == tmptok) |
9309 | error (_("Junk after task keyword.")); | |
9310 | if (!valid_task_id (*task)) | |
b6199126 | 9311 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9312 | tok = tmptok; |
4a306c9a | 9313 | } |
e7e0cddf SS |
9314 | else if (rest) |
9315 | { | |
9316 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9317 | return; |
e7e0cddf | 9318 | } |
018d34a4 VP |
9319 | else |
9320 | error (_("Junk at end of arguments.")); | |
9321 | } | |
9322 | } | |
9323 | ||
0fb4aa4b PA |
9324 | /* Decode a static tracepoint marker spec. */ |
9325 | ||
6c5b2ebe | 9326 | static std::vector<symtab_and_line> |
f00aae0f | 9327 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9328 | { |
9329 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
f00aae0f KS |
9330 | const char *p = &(*arg_p)[3]; |
9331 | const char *endp; | |
0fb4aa4b PA |
9332 | int i; |
9333 | ||
f1735a53 | 9334 | p = skip_spaces (p); |
0fb4aa4b | 9335 | |
f1735a53 | 9336 | endp = skip_to_space (p); |
0fb4aa4b | 9337 | |
81b1e71c | 9338 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9339 | |
81b1e71c | 9340 | markers = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); |
0fb4aa4b | 9341 | if (VEC_empty(static_tracepoint_marker_p, markers)) |
81b1e71c TT |
9342 | error (_("No known static tracepoint marker named %s"), |
9343 | marker_str.c_str ()); | |
0fb4aa4b | 9344 | |
6c5b2ebe PA |
9345 | std::vector<symtab_and_line> sals; |
9346 | sals.reserve (VEC_length(static_tracepoint_marker_p, markers)); | |
0fb4aa4b | 9347 | |
6c5b2ebe | 9348 | for (i = 0; i < VEC_length(static_tracepoint_marker_p, markers); i++) |
0fb4aa4b PA |
9349 | { |
9350 | struct static_tracepoint_marker *marker; | |
9351 | ||
9352 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9353 | ||
51abb421 | 9354 | symtab_and_line sal = find_pc_line (marker->address, 0); |
6c5b2ebe PA |
9355 | sal.pc = marker->address; |
9356 | sals.push_back (sal); | |
0fb4aa4b PA |
9357 | |
9358 | release_static_tracepoint_marker (marker); | |
9359 | } | |
9360 | ||
0fb4aa4b PA |
9361 | *arg_p = endp; |
9362 | return sals; | |
9363 | } | |
9364 | ||
f00aae0f | 9365 | /* See breakpoint.h. */ |
0101ce28 | 9366 | |
8cdf0e15 VP |
9367 | int |
9368 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9369 | const struct event_location *location, |
9370 | const char *cond_string, | |
9371 | int thread, const char *extra_string, | |
f00aae0f | 9372 | int parse_extra, |
0fb4aa4b | 9373 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9374 | int ignore_count, |
9375 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9376 | const struct breakpoint_ops *ops, |
44f238bb PA |
9377 | int from_tty, int enabled, int internal, |
9378 | unsigned flags) | |
c3f6f71d | 9379 | { |
7efd8fc2 | 9380 | struct linespec_result canonical; |
80c99de1 | 9381 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9382 | int pending = 0; |
4a306c9a | 9383 | int task = 0; |
86b17b60 | 9384 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9385 | |
348d480f PA |
9386 | gdb_assert (ops != NULL); |
9387 | ||
f00aae0f KS |
9388 | /* If extra_string isn't useful, set it to NULL. */ |
9389 | if (extra_string != NULL && *extra_string == '\0') | |
9390 | extra_string = NULL; | |
9391 | ||
492d29ea | 9392 | TRY |
b78a6381 | 9393 | { |
f00aae0f | 9394 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9395 | } |
492d29ea | 9396 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9397 | { |
492d29ea PA |
9398 | /* If caller is interested in rc value from parse, set |
9399 | value. */ | |
9400 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9401 | { |
05ff989b AC |
9402 | /* If pending breakpoint support is turned off, throw |
9403 | error. */ | |
fa8d40ab JJ |
9404 | |
9405 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9406 | throw_exception (e); |
9407 | ||
9408 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9409 | |
05ff989b AC |
9410 | /* If pending breakpoint support is auto query and the user |
9411 | selects no, then simply return the error code. */ | |
059fb39f | 9412 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9413 | && !nquery (_("Make %s pending on future shared library load? "), |
9414 | bptype_string (type_wanted))) | |
fd9b8c24 | 9415 | return 0; |
fa8d40ab | 9416 | |
05ff989b AC |
9417 | /* At this point, either the user was queried about setting |
9418 | a pending breakpoint and selected yes, or pending | |
9419 | breakpoint behavior is on and thus a pending breakpoint | |
9420 | is defaulted on behalf of the user. */ | |
f00aae0f | 9421 | pending = 1; |
0101ce28 | 9422 | } |
492d29ea PA |
9423 | else |
9424 | throw_exception (e); | |
0101ce28 | 9425 | } |
492d29ea PA |
9426 | END_CATCH |
9427 | ||
6c5b2ebe | 9428 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9429 | return 0; |
c3f6f71d | 9430 | |
c3f6f71d JM |
9431 | /* ----------------------------- SNIP ----------------------------- |
9432 | Anything added to the cleanup chain beyond this point is assumed | |
9433 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9434 | then the memory is not reclaimed. */ |
9435 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9436 | |
c3f6f71d JM |
9437 | /* Resolve all line numbers to PC's and verify that the addresses |
9438 | are ok for the target. */ | |
0101ce28 | 9439 | if (!pending) |
f8eba3c6 | 9440 | { |
6c5b2ebe PA |
9441 | for (auto &lsal : canonical.lsals) |
9442 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9443 | } |
c3f6f71d | 9444 | |
7a697b8d | 9445 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9446 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9447 | { |
6c5b2ebe PA |
9448 | for (const auto &lsal : canonical.lsals) |
9449 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9450 | } |
7a697b8d | 9451 | |
c3f6f71d JM |
9452 | /* Verify that condition can be parsed, before setting any |
9453 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9454 | breakpoint. */ |
0101ce28 | 9455 | if (!pending) |
c3f6f71d | 9456 | { |
e1e01040 PA |
9457 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9458 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9459 | ||
f00aae0f | 9460 | if (parse_extra) |
72b2ff0e | 9461 | { |
0878d0fa | 9462 | char *rest; |
e1e01040 | 9463 | char *cond; |
52d361e1 | 9464 | |
6c5b2ebe | 9465 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9466 | |
0878d0fa YQ |
9467 | /* Here we only parse 'arg' to separate condition |
9468 | from thread number, so parsing in context of first | |
9469 | sal is OK. When setting the breakpoint we'll | |
9470 | re-parse it in context of each sal. */ | |
9471 | ||
6c5b2ebe | 9472 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9473 | &cond, &thread, &task, &rest); |
9474 | cond_string_copy.reset (cond); | |
9475 | extra_string_copy.reset (rest); | |
72b2ff0e | 9476 | } |
2f069f6f | 9477 | else |
72b2ff0e | 9478 | { |
f00aae0f KS |
9479 | if (type_wanted != bp_dprintf |
9480 | && extra_string != NULL && *extra_string != '\0') | |
9481 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9482 | |
9483 | /* Create a private copy of condition string. */ | |
9484 | if (cond_string) | |
e1e01040 | 9485 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9486 | /* Create a private copy of any extra string. */ |
9487 | if (extra_string) | |
e1e01040 | 9488 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9489 | } |
0fb4aa4b | 9490 | |
52d361e1 | 9491 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9492 | std::move (cond_string_copy), |
9493 | std::move (extra_string_copy), | |
9494 | type_wanted, | |
d9b3f62e PA |
9495 | tempflag ? disp_del : disp_donttouch, |
9496 | thread, task, ignore_count, ops, | |
44f238bb | 9497 | from_tty, enabled, internal, flags); |
c906108c | 9498 | } |
0101ce28 JJ |
9499 | else |
9500 | { | |
a5e364af | 9501 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9502 | |
a5e364af | 9503 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9504 | b->location = copy_event_location (location); |
bfccc43c | 9505 | |
f00aae0f KS |
9506 | if (parse_extra) |
9507 | b->cond_string = NULL; | |
e12c7713 MK |
9508 | else |
9509 | { | |
9510 | /* Create a private copy of condition string. */ | |
e1e01040 | 9511 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9512 | b->thread = thread; |
e12c7713 | 9513 | } |
f00aae0f KS |
9514 | |
9515 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9516 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9517 | b->ignore_count = ignore_count; |
0101ce28 | 9518 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9519 | b->condition_not_parsed = 1; |
41447f92 | 9520 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9521 | if ((type_wanted != bp_breakpoint |
9522 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9523 | b->pspace = current_program_space; |
8bea4e01 | 9524 | |
b270e6f9 | 9525 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9526 | } |
9527 | ||
6c5b2ebe | 9528 | if (canonical.lsals.size () > 1) |
95a42b64 | 9529 | { |
3e43a32a MS |
9530 | warning (_("Multiple breakpoints were set.\nUse the " |
9531 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9532 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9533 | } |
9534 | ||
80c99de1 PA |
9535 | /* That's it. Discard the cleanups for data inserted into the |
9536 | breakpoint. */ | |
9537 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9538 | |
80c99de1 | 9539 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9540 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9541 | |
9542 | return 1; | |
c3f6f71d | 9543 | } |
c906108c | 9544 | |
348d480f | 9545 | /* Set a breakpoint. |
72b2ff0e VP |
9546 | ARG is a string describing breakpoint address, |
9547 | condition, and thread. | |
9548 | FLAG specifies if a breakpoint is hardware on, | |
9549 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9550 | and BP_TEMPFLAG. */ | |
348d480f | 9551 | |
98deb0da | 9552 | static void |
f2fc3015 | 9553 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9554 | { |
72b2ff0e | 9555 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9556 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9557 | ? bp_hardware_breakpoint | |
9558 | : bp_breakpoint); | |
55aa24fb | 9559 | struct breakpoint_ops *ops; |
f00aae0f | 9560 | |
ffc2605c | 9561 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9562 | |
9563 | /* Matching breakpoints on probes. */ | |
5b56227b | 9564 | if (location != NULL |
ffc2605c | 9565 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9566 | ops = &bkpt_probe_breakpoint_ops; |
9567 | else | |
9568 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9569 | |
8cdf0e15 | 9570 | create_breakpoint (get_current_arch (), |
ffc2605c | 9571 | location.get (), |
f00aae0f | 9572 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9573 | tempflag, type_wanted, |
8cdf0e15 VP |
9574 | 0 /* Ignore count */, |
9575 | pending_break_support, | |
55aa24fb | 9576 | ops, |
8cdf0e15 | 9577 | from_tty, |
84f4c1fe | 9578 | 1 /* enabled */, |
44f238bb PA |
9579 | 0 /* internal */, |
9580 | 0); | |
c906108c SS |
9581 | } |
9582 | ||
c906108c SS |
9583 | /* Helper function for break_command_1 and disassemble_command. */ |
9584 | ||
9585 | void | |
fba45db2 | 9586 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9587 | { |
9588 | CORE_ADDR pc; | |
9589 | ||
9590 | if (sal->pc == 0 && sal->symtab != NULL) | |
9591 | { | |
9592 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9593 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9594 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9595 | sal->pc = pc; |
6a048695 | 9596 | |
4a64f543 MS |
9597 | /* If this SAL corresponds to a breakpoint inserted using a line |
9598 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9599 | if (sal->explicit_line) |
059acae7 | 9600 | skip_prologue_sal (sal); |
c906108c SS |
9601 | } |
9602 | ||
9603 | if (sal->section == 0 && sal->symtab != NULL) | |
9604 | { | |
346d1dfe | 9605 | const struct blockvector *bv; |
3977b71f | 9606 | const struct block *b; |
c5aa993b | 9607 | struct symbol *sym; |
c906108c | 9608 | |
43f3e411 DE |
9609 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9610 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9611 | if (bv != NULL) |
9612 | { | |
7f0df278 | 9613 | sym = block_linkage_function (b); |
c906108c SS |
9614 | if (sym != NULL) |
9615 | { | |
eb822aa6 DE |
9616 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9617 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9618 | sym); | |
c906108c SS |
9619 | } |
9620 | else | |
9621 | { | |
4a64f543 MS |
9622 | /* It really is worthwhile to have the section, so we'll |
9623 | just have to look harder. This case can be executed | |
9624 | if we have line numbers but no functions (as can | |
9625 | happen in assembly source). */ | |
c906108c | 9626 | |
5ed8105e | 9627 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9628 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9629 | |
5ed8105e | 9630 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9631 | if (msym.minsym) |
efd66ac6 | 9632 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9633 | } |
9634 | } | |
9635 | } | |
9636 | } | |
9637 | ||
9638 | void | |
fba45db2 | 9639 | break_command (char *arg, int from_tty) |
c906108c | 9640 | { |
db107f19 | 9641 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9642 | } |
9643 | ||
c906108c | 9644 | void |
fba45db2 | 9645 | tbreak_command (char *arg, int from_tty) |
c906108c | 9646 | { |
db107f19 | 9647 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9648 | } |
9649 | ||
c906108c | 9650 | static void |
fba45db2 | 9651 | hbreak_command (char *arg, int from_tty) |
c906108c | 9652 | { |
db107f19 | 9653 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9654 | } |
9655 | ||
9656 | static void | |
fba45db2 | 9657 | thbreak_command (char *arg, int from_tty) |
c906108c | 9658 | { |
db107f19 | 9659 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9660 | } |
9661 | ||
9662 | static void | |
fba45db2 | 9663 | stop_command (char *arg, int from_tty) |
c906108c | 9664 | { |
a3f17187 | 9665 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9666 | Usage: stop in <function | address>\n\ |
a3f17187 | 9667 | stop at <line>\n")); |
c906108c SS |
9668 | } |
9669 | ||
9670 | static void | |
4495129a | 9671 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9672 | { |
9673 | int badInput = 0; | |
9674 | ||
c5aa993b | 9675 | if (arg == (char *) NULL) |
c906108c SS |
9676 | badInput = 1; |
9677 | else if (*arg != '*') | |
9678 | { | |
4495129a | 9679 | const char *argptr = arg; |
c906108c SS |
9680 | int hasColon = 0; |
9681 | ||
4a64f543 | 9682 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9683 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9684 | function/method name. */ |
c906108c | 9685 | while (*argptr && !hasColon) |
c5aa993b JM |
9686 | { |
9687 | hasColon = (*argptr == ':'); | |
9688 | argptr++; | |
9689 | } | |
c906108c SS |
9690 | |
9691 | if (hasColon) | |
c5aa993b | 9692 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9693 | else |
c5aa993b | 9694 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9695 | } |
9696 | ||
9697 | if (badInput) | |
a3f17187 | 9698 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9699 | else |
db107f19 | 9700 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9701 | } |
9702 | ||
9703 | static void | |
4495129a | 9704 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9705 | { |
9706 | int badInput = 0; | |
9707 | ||
c5aa993b | 9708 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9709 | badInput = 1; |
9710 | else | |
9711 | { | |
4495129a | 9712 | const char *argptr = arg; |
c906108c SS |
9713 | int hasColon = 0; |
9714 | ||
4a64f543 MS |
9715 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9716 | it is probably a line number. */ | |
c906108c | 9717 | while (*argptr && !hasColon) |
c5aa993b JM |
9718 | { |
9719 | hasColon = (*argptr == ':'); | |
9720 | argptr++; | |
9721 | } | |
c906108c SS |
9722 | |
9723 | if (hasColon) | |
c5aa993b | 9724 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9725 | else |
c5aa993b | 9726 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9727 | } |
9728 | ||
9729 | if (badInput) | |
a3f17187 | 9730 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9731 | else |
db107f19 | 9732 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9733 | } |
9734 | ||
e7e0cddf SS |
9735 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9736 | with a prewired command list consisting of a single output command, | |
9737 | built from extra arguments supplied on the dprintf command | |
9738 | line. */ | |
9739 | ||
da821c7b | 9740 | static void |
f2fc3015 | 9741 | dprintf_command (char *arg_in, int from_tty) |
e7e0cddf | 9742 | { |
f2fc3015 | 9743 | const char *arg = arg_in; |
ffc2605c | 9744 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9745 | |
9746 | /* If non-NULL, ARG should have been advanced past the location; | |
9747 | the next character must be ','. */ | |
9748 | if (arg != NULL) | |
9749 | { | |
9750 | if (arg[0] != ',' || arg[1] == '\0') | |
9751 | error (_("Format string required")); | |
9752 | else | |
9753 | { | |
9754 | /* Skip the comma. */ | |
9755 | ++arg; | |
9756 | } | |
9757 | } | |
9758 | ||
e7e0cddf | 9759 | create_breakpoint (get_current_arch (), |
ffc2605c | 9760 | location.get (), |
f00aae0f | 9761 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9762 | 0, bp_dprintf, |
9763 | 0 /* Ignore count */, | |
9764 | pending_break_support, | |
9765 | &dprintf_breakpoint_ops, | |
9766 | from_tty, | |
9767 | 1 /* enabled */, | |
9768 | 0 /* internal */, | |
9769 | 0); | |
9770 | } | |
9771 | ||
d3ce09f5 SS |
9772 | static void |
9773 | agent_printf_command (char *arg, int from_tty) | |
9774 | { | |
9775 | error (_("May only run agent-printf on the target")); | |
9776 | } | |
9777 | ||
f1310107 TJB |
9778 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9779 | ranged breakpoints. */ | |
9780 | ||
9781 | static int | |
9782 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9783 | const address_space *aspace, |
09ac7c10 TT |
9784 | CORE_ADDR bp_addr, |
9785 | const struct target_waitstatus *ws) | |
f1310107 | 9786 | { |
09ac7c10 | 9787 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9788 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9789 | return 0; |
9790 | ||
f1310107 TJB |
9791 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9792 | bl->length, aspace, bp_addr); | |
9793 | } | |
9794 | ||
9795 | /* Implement the "resources_needed" breakpoint_ops method for | |
9796 | ranged breakpoints. */ | |
9797 | ||
9798 | static int | |
9799 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9800 | { | |
9801 | return target_ranged_break_num_registers (); | |
9802 | } | |
9803 | ||
9804 | /* Implement the "print_it" breakpoint_ops method for | |
9805 | ranged breakpoints. */ | |
9806 | ||
9807 | static enum print_stop_action | |
348d480f | 9808 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9809 | { |
348d480f | 9810 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9811 | struct bp_location *bl = b->loc; |
79a45e25 | 9812 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9813 | |
9814 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9815 | ||
9816 | /* Ranged breakpoints have only one location. */ | |
9817 | gdb_assert (bl && bl->next == NULL); | |
9818 | ||
9819 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9820 | |
9821 | maybe_print_thread_hit_breakpoint (uiout); | |
9822 | ||
f1310107 | 9823 | if (b->disposition == disp_del) |
112e8700 | 9824 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9825 | else |
112e8700 SM |
9826 | uiout->text ("Ranged breakpoint "); |
9827 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9828 | { |
112e8700 | 9829 | uiout->field_string ("reason", |
f1310107 | 9830 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9831 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9832 | } |
112e8700 SM |
9833 | uiout->field_int ("bkptno", b->number); |
9834 | uiout->text (", "); | |
f1310107 TJB |
9835 | |
9836 | return PRINT_SRC_AND_LOC; | |
9837 | } | |
9838 | ||
9839 | /* Implement the "print_one" breakpoint_ops method for | |
9840 | ranged breakpoints. */ | |
9841 | ||
9842 | static void | |
9843 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9844 | struct bp_location **last_loc) | |
9845 | { | |
9846 | struct bp_location *bl = b->loc; | |
9847 | struct value_print_options opts; | |
79a45e25 | 9848 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9849 | |
9850 | /* Ranged breakpoints have only one location. */ | |
9851 | gdb_assert (bl && bl->next == NULL); | |
9852 | ||
9853 | get_user_print_options (&opts); | |
9854 | ||
9855 | if (opts.addressprint) | |
9856 | /* We don't print the address range here, it will be printed later | |
9857 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9858 | uiout->field_skip ("addr"); |
f1310107 TJB |
9859 | annotate_field (5); |
9860 | print_breakpoint_location (b, bl); | |
9861 | *last_loc = bl; | |
9862 | } | |
9863 | ||
9864 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9865 | ranged breakpoints. */ | |
9866 | ||
9867 | static void | |
9868 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9869 | struct ui_out *uiout) | |
9870 | { | |
9871 | CORE_ADDR address_start, address_end; | |
9872 | struct bp_location *bl = b->loc; | |
d7e74731 | 9873 | string_file stb; |
f1310107 TJB |
9874 | |
9875 | gdb_assert (bl); | |
9876 | ||
9877 | address_start = bl->address; | |
9878 | address_end = address_start + bl->length - 1; | |
9879 | ||
112e8700 | 9880 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9881 | stb.printf ("[%s, %s]", |
9882 | print_core_address (bl->gdbarch, address_start), | |
9883 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9884 | uiout->field_stream ("addr", stb); |
9885 | uiout->text ("\n"); | |
f1310107 TJB |
9886 | } |
9887 | ||
9888 | /* Implement the "print_mention" breakpoint_ops method for | |
9889 | ranged breakpoints. */ | |
9890 | ||
9891 | static void | |
9892 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9893 | { | |
9894 | struct bp_location *bl = b->loc; | |
79a45e25 | 9895 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9896 | |
9897 | gdb_assert (bl); | |
9898 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9899 | ||
112e8700 | 9900 | if (uiout->is_mi_like_p ()) |
f1310107 TJB |
9901 | return; |
9902 | ||
9903 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9904 | b->number, paddress (bl->gdbarch, bl->address), | |
9905 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9906 | } | |
9907 | ||
9908 | /* Implement the "print_recreate" breakpoint_ops method for | |
9909 | ranged breakpoints. */ | |
9910 | ||
9911 | static void | |
9912 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9913 | { | |
f00aae0f | 9914 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9915 | event_location_to_string (b->location.get ()), |
9916 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9917 | print_recreate_thread (b, fp); |
f1310107 TJB |
9918 | } |
9919 | ||
9920 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9921 | ||
2060206e | 9922 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9923 | |
9924 | /* Find the address where the end of the breakpoint range should be | |
9925 | placed, given the SAL of the end of the range. This is so that if | |
9926 | the user provides a line number, the end of the range is set to the | |
9927 | last instruction of the given line. */ | |
9928 | ||
9929 | static CORE_ADDR | |
9930 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9931 | { | |
9932 | CORE_ADDR end; | |
9933 | ||
9934 | /* If the user provided a PC value, use it. Otherwise, | |
9935 | find the address of the end of the given location. */ | |
9936 | if (sal.explicit_pc) | |
9937 | end = sal.pc; | |
9938 | else | |
9939 | { | |
9940 | int ret; | |
9941 | CORE_ADDR start; | |
9942 | ||
9943 | ret = find_line_pc_range (sal, &start, &end); | |
9944 | if (!ret) | |
9945 | error (_("Could not find location of the end of the range.")); | |
9946 | ||
9947 | /* find_line_pc_range returns the start of the next line. */ | |
9948 | end--; | |
9949 | } | |
9950 | ||
9951 | return end; | |
9952 | } | |
9953 | ||
9954 | /* Implement the "break-range" CLI command. */ | |
9955 | ||
9956 | static void | |
f2fc3015 | 9957 | break_range_command (char *arg_in, int from_tty) |
f1310107 | 9958 | { |
f2fc3015 TT |
9959 | const char *arg = arg_in; |
9960 | const char *arg_start; | |
f1310107 TJB |
9961 | struct linespec_result canonical_start, canonical_end; |
9962 | int bp_count, can_use_bp, length; | |
9963 | CORE_ADDR end; | |
9964 | struct breakpoint *b; | |
f1310107 TJB |
9965 | |
9966 | /* We don't support software ranged breakpoints. */ | |
9967 | if (target_ranged_break_num_registers () < 0) | |
9968 | error (_("This target does not support hardware ranged breakpoints.")); | |
9969 | ||
9970 | bp_count = hw_breakpoint_used_count (); | |
9971 | bp_count += target_ranged_break_num_registers (); | |
9972 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9973 | bp_count, 0); | |
9974 | if (can_use_bp < 0) | |
9975 | error (_("Hardware breakpoints used exceeds limit.")); | |
9976 | ||
f8eba3c6 | 9977 | arg = skip_spaces (arg); |
f1310107 TJB |
9978 | if (arg == NULL || arg[0] == '\0') |
9979 | error(_("No address range specified.")); | |
9980 | ||
f8eba3c6 | 9981 | arg_start = arg; |
ffc2605c TT |
9982 | event_location_up start_location = string_to_event_location (&arg, |
9983 | current_language); | |
9984 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9985 | |
9986 | if (arg[0] != ',') | |
9987 | error (_("Too few arguments.")); | |
6c5b2ebe | 9988 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9989 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9990 | |
6c5b2ebe | 9991 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9992 | |
6c5b2ebe PA |
9993 | if (canonical_start.lsals.size () > 1 |
9994 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9995 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9996 | ||
6c5b2ebe | 9997 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9998 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9999 | |
10000 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10001 | arg = skip_spaces (arg); |
f1310107 TJB |
10002 | |
10003 | /* Parse the end location. */ | |
10004 | ||
f1310107 TJB |
10005 | arg_start = arg; |
10006 | ||
f8eba3c6 | 10007 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10008 | parse_breakpoint_sals because we need to specify the start location's |
10009 | symtab and line as the default symtab and line for the end of the | |
10010 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10011 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
10012 | event_location_up end_location = string_to_event_location (&arg, |
10013 | current_language); | |
10014 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
10015 | sal_start.symtab, sal_start.line, |
10016 | &canonical_end, NULL, NULL); | |
10017 | ||
6c5b2ebe | 10018 | if (canonical_end.lsals.empty ()) |
f1310107 | 10019 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 10020 | |
6c5b2ebe PA |
10021 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
10022 | if (canonical_end.lsals.size () > 1 | |
10023 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10024 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10025 | ||
6c5b2ebe | 10026 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10027 | |
10028 | end = find_breakpoint_range_end (sal_end); | |
10029 | if (sal_start.pc > end) | |
177b42fe | 10030 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10031 | |
10032 | length = end - sal_start.pc + 1; | |
10033 | if (length < 0) | |
10034 | /* Length overflowed. */ | |
10035 | error (_("Address range too large.")); | |
10036 | else if (length == 1) | |
10037 | { | |
10038 | /* This range is simple enough to be handled by | |
10039 | the `hbreak' command. */ | |
81b1e71c | 10040 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10041 | |
10042 | return; | |
10043 | } | |
10044 | ||
10045 | /* Now set up the breakpoint. */ | |
10046 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10047 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10048 | set_breakpoint_count (breakpoint_count + 1); |
10049 | b->number = breakpoint_count; | |
10050 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10051 | b->location = std::move (start_location); |
10052 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10053 | b->loc->length = length; |
10054 | ||
f1310107 | 10055 | mention (b); |
8d3788bd | 10056 | observer_notify_breakpoint_created (b); |
44702360 | 10057 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10058 | } |
10059 | ||
4a64f543 MS |
10060 | /* Return non-zero if EXP is verified as constant. Returned zero |
10061 | means EXP is variable. Also the constant detection may fail for | |
10062 | some constant expressions and in such case still falsely return | |
10063 | zero. */ | |
2e6e3d9c | 10064 | |
65d79d4b SDJ |
10065 | static int |
10066 | watchpoint_exp_is_const (const struct expression *exp) | |
10067 | { | |
10068 | int i = exp->nelts; | |
10069 | ||
10070 | while (i > 0) | |
10071 | { | |
10072 | int oplenp, argsp; | |
10073 | ||
10074 | /* We are only interested in the descriptor of each element. */ | |
10075 | operator_length (exp, i, &oplenp, &argsp); | |
10076 | i -= oplenp; | |
10077 | ||
10078 | switch (exp->elts[i].opcode) | |
10079 | { | |
10080 | case BINOP_ADD: | |
10081 | case BINOP_SUB: | |
10082 | case BINOP_MUL: | |
10083 | case BINOP_DIV: | |
10084 | case BINOP_REM: | |
10085 | case BINOP_MOD: | |
10086 | case BINOP_LSH: | |
10087 | case BINOP_RSH: | |
10088 | case BINOP_LOGICAL_AND: | |
10089 | case BINOP_LOGICAL_OR: | |
10090 | case BINOP_BITWISE_AND: | |
10091 | case BINOP_BITWISE_IOR: | |
10092 | case BINOP_BITWISE_XOR: | |
10093 | case BINOP_EQUAL: | |
10094 | case BINOP_NOTEQUAL: | |
10095 | case BINOP_LESS: | |
10096 | case BINOP_GTR: | |
10097 | case BINOP_LEQ: | |
10098 | case BINOP_GEQ: | |
10099 | case BINOP_REPEAT: | |
10100 | case BINOP_COMMA: | |
10101 | case BINOP_EXP: | |
10102 | case BINOP_MIN: | |
10103 | case BINOP_MAX: | |
10104 | case BINOP_INTDIV: | |
10105 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10106 | case TERNOP_COND: |
10107 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10108 | |
10109 | case OP_LONG: | |
edd079d9 | 10110 | case OP_FLOAT: |
65d79d4b SDJ |
10111 | case OP_LAST: |
10112 | case OP_COMPLEX: | |
10113 | case OP_STRING: | |
65d79d4b SDJ |
10114 | case OP_ARRAY: |
10115 | case OP_TYPE: | |
608b4967 TT |
10116 | case OP_TYPEOF: |
10117 | case OP_DECLTYPE: | |
6e72ca20 | 10118 | case OP_TYPEID: |
65d79d4b SDJ |
10119 | case OP_NAME: |
10120 | case OP_OBJC_NSSTRING: | |
10121 | ||
10122 | case UNOP_NEG: | |
10123 | case UNOP_LOGICAL_NOT: | |
10124 | case UNOP_COMPLEMENT: | |
10125 | case UNOP_ADDR: | |
10126 | case UNOP_HIGH: | |
aeaa2474 | 10127 | case UNOP_CAST: |
9eaf6705 TT |
10128 | |
10129 | case UNOP_CAST_TYPE: | |
10130 | case UNOP_REINTERPRET_CAST: | |
10131 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10132 | /* Unary, binary and ternary operators: We have to check |
10133 | their operands. If they are constant, then so is the | |
10134 | result of that operation. For instance, if A and B are | |
10135 | determined to be constants, then so is "A + B". | |
10136 | ||
10137 | UNOP_IND is one exception to the rule above, because the | |
10138 | value of *ADDR is not necessarily a constant, even when | |
10139 | ADDR is. */ | |
65d79d4b SDJ |
10140 | break; |
10141 | ||
10142 | case OP_VAR_VALUE: | |
10143 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10144 | |
65d79d4b | 10145 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10146 | possible that a buggy compiler could mark a variable as |
10147 | constant even when it is not, and TYPE_CONST would return | |
10148 | true in this case, while SYMBOL_CLASS wouldn't. | |
10149 | ||
10150 | We also have to check for function symbols because they | |
10151 | are always constant. */ | |
65d79d4b SDJ |
10152 | { |
10153 | struct symbol *s = exp->elts[i + 2].symbol; | |
10154 | ||
10155 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10156 | && SYMBOL_CLASS (s) != LOC_CONST | |
10157 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10158 | return 0; | |
10159 | break; | |
10160 | } | |
10161 | ||
10162 | /* The default action is to return 0 because we are using | |
10163 | the optimistic approach here: If we don't know something, | |
10164 | then it is not a constant. */ | |
10165 | default: | |
10166 | return 0; | |
10167 | } | |
10168 | } | |
10169 | ||
10170 | return 1; | |
10171 | } | |
10172 | ||
c1fc2657 | 10173 | /* Watchpoint destructor. */ |
3a5c3e22 | 10174 | |
c1fc2657 | 10175 | watchpoint::~watchpoint () |
3a5c3e22 | 10176 | { |
c1fc2657 SM |
10177 | xfree (this->exp_string); |
10178 | xfree (this->exp_string_reparse); | |
10179 | value_free (this->val); | |
3a5c3e22 PA |
10180 | } |
10181 | ||
348d480f PA |
10182 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10183 | ||
10184 | static void | |
10185 | re_set_watchpoint (struct breakpoint *b) | |
10186 | { | |
3a5c3e22 PA |
10187 | struct watchpoint *w = (struct watchpoint *) b; |
10188 | ||
348d480f PA |
10189 | /* Watchpoint can be either on expression using entirely global |
10190 | variables, or it can be on local variables. | |
10191 | ||
10192 | Watchpoints of the first kind are never auto-deleted, and even | |
10193 | persist across program restarts. Since they can use variables | |
10194 | from shared libraries, we need to reparse expression as libraries | |
10195 | are loaded and unloaded. | |
10196 | ||
10197 | Watchpoints on local variables can also change meaning as result | |
10198 | of solib event. For example, if a watchpoint uses both a local | |
10199 | and a global variables in expression, it's a local watchpoint, | |
10200 | but unloading of a shared library will make the expression | |
10201 | invalid. This is not a very common use case, but we still | |
10202 | re-evaluate expression, to avoid surprises to the user. | |
10203 | ||
10204 | Note that for local watchpoints, we re-evaluate it only if | |
10205 | watchpoints frame id is still valid. If it's not, it means the | |
10206 | watchpoint is out of scope and will be deleted soon. In fact, | |
10207 | I'm not sure we'll ever be called in this case. | |
10208 | ||
10209 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10210 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10211 | |
3a5c3e22 PA |
10212 | Don't do anything about disabled watchpoints, since they will be |
10213 | reevaluated again when enabled. */ | |
10214 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10215 | } |
10216 | ||
77b06cd7 TJB |
10217 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10218 | ||
10219 | static int | |
10220 | insert_watchpoint (struct bp_location *bl) | |
10221 | { | |
3a5c3e22 PA |
10222 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10223 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10224 | |
10225 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10226 | w->cond_exp.get ()); |
77b06cd7 TJB |
10227 | } |
10228 | ||
10229 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10230 | ||
10231 | static int | |
73971819 | 10232 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10233 | { |
3a5c3e22 PA |
10234 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10235 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10236 | |
10237 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10238 | w->cond_exp.get ()); |
e09342b5 TJB |
10239 | } |
10240 | ||
e09342b5 | 10241 | static int |
348d480f | 10242 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10243 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10244 | const struct target_waitstatus *ws) |
e09342b5 | 10245 | { |
348d480f | 10246 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10247 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10248 | |
348d480f PA |
10249 | /* Continuable hardware watchpoints are treated as non-existent if the |
10250 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10251 | some data address). Otherwise gdb won't stop on a break instruction | |
10252 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10253 | been defined. Also skip watchpoints which we know did not trigger | |
10254 | (did not match the data address). */ | |
10255 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10256 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10257 | return 0; |
9c06b0b4 | 10258 | |
348d480f | 10259 | return 1; |
9c06b0b4 TJB |
10260 | } |
10261 | ||
348d480f PA |
10262 | static void |
10263 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10264 | { |
348d480f | 10265 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10266 | |
348d480f | 10267 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10268 | } |
10269 | ||
10270 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10271 | hardware watchpoints. */ |
9c06b0b4 TJB |
10272 | |
10273 | static int | |
348d480f | 10274 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10275 | { |
3a5c3e22 PA |
10276 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10277 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10278 | |
10279 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10280 | } |
10281 | ||
10282 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10283 | hardware watchpoints. */ |
9c06b0b4 TJB |
10284 | |
10285 | static int | |
348d480f | 10286 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10287 | { |
efa80663 PA |
10288 | /* Read and access watchpoints only work with hardware support. */ |
10289 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10290 | } |
10291 | ||
9c06b0b4 | 10292 | static enum print_stop_action |
348d480f | 10293 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10294 | { |
348d480f | 10295 | struct breakpoint *b; |
348d480f | 10296 | enum print_stop_action result; |
3a5c3e22 | 10297 | struct watchpoint *w; |
79a45e25 | 10298 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10299 | |
10300 | gdb_assert (bs->bp_location_at != NULL); | |
10301 | ||
348d480f | 10302 | b = bs->breakpoint_at; |
3a5c3e22 | 10303 | w = (struct watchpoint *) b; |
348d480f | 10304 | |
f303dbd6 PA |
10305 | annotate_watchpoint (b->number); |
10306 | maybe_print_thread_hit_breakpoint (uiout); | |
10307 | ||
d7e74731 PA |
10308 | string_file stb; |
10309 | ||
76f9c9cf | 10310 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10311 | switch (b->type) |
10312 | { | |
348d480f | 10313 | case bp_watchpoint: |
9c06b0b4 | 10314 | case bp_hardware_watchpoint: |
112e8700 SM |
10315 | if (uiout->is_mi_like_p ()) |
10316 | uiout->field_string | |
10317 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10318 | mention (b); |
76f9c9cf | 10319 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10320 | uiout->text ("\nOld value = "); |
d7e74731 | 10321 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10322 | uiout->field_stream ("old", stb); |
10323 | uiout->text ("\nNew value = "); | |
d7e74731 | 10324 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10325 | uiout->field_stream ("new", stb); |
10326 | uiout->text ("\n"); | |
348d480f PA |
10327 | /* More than one watchpoint may have been triggered. */ |
10328 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10329 | break; |
10330 | ||
10331 | case bp_read_watchpoint: | |
112e8700 SM |
10332 | if (uiout->is_mi_like_p ()) |
10333 | uiout->field_string | |
10334 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10335 | mention (b); |
76f9c9cf | 10336 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10337 | uiout->text ("\nValue = "); |
d7e74731 | 10338 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10339 | uiout->field_stream ("value", stb); |
10340 | uiout->text ("\n"); | |
348d480f | 10341 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10342 | break; |
10343 | ||
10344 | case bp_access_watchpoint: | |
348d480f PA |
10345 | if (bs->old_val != NULL) |
10346 | { | |
112e8700 SM |
10347 | if (uiout->is_mi_like_p ()) |
10348 | uiout->field_string | |
10349 | ("reason", | |
348d480f PA |
10350 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10351 | mention (b); | |
76f9c9cf | 10352 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10353 | uiout->text ("\nOld value = "); |
d7e74731 | 10354 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10355 | uiout->field_stream ("old", stb); |
10356 | uiout->text ("\nNew value = "); | |
348d480f PA |
10357 | } |
10358 | else | |
10359 | { | |
10360 | mention (b); | |
112e8700 SM |
10361 | if (uiout->is_mi_like_p ()) |
10362 | uiout->field_string | |
10363 | ("reason", | |
348d480f | 10364 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10365 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10366 | uiout->text ("\nValue = "); |
348d480f | 10367 | } |
d7e74731 | 10368 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10369 | uiout->field_stream ("new", stb); |
10370 | uiout->text ("\n"); | |
348d480f | 10371 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10372 | break; |
10373 | default: | |
348d480f | 10374 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10375 | } |
10376 | ||
348d480f PA |
10377 | return result; |
10378 | } | |
10379 | ||
10380 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10381 | watchpoints. */ | |
10382 | ||
10383 | static void | |
10384 | print_mention_watchpoint (struct breakpoint *b) | |
10385 | { | |
3a5c3e22 | 10386 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10387 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10388 | const char *tuple_name; |
348d480f PA |
10389 | |
10390 | switch (b->type) | |
10391 | { | |
10392 | case bp_watchpoint: | |
112e8700 | 10393 | uiout->text ("Watchpoint "); |
46b9c129 | 10394 | tuple_name = "wpt"; |
348d480f PA |
10395 | break; |
10396 | case bp_hardware_watchpoint: | |
112e8700 | 10397 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10398 | tuple_name = "wpt"; |
348d480f PA |
10399 | break; |
10400 | case bp_read_watchpoint: | |
112e8700 | 10401 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10402 | tuple_name = "hw-rwpt"; |
348d480f PA |
10403 | break; |
10404 | case bp_access_watchpoint: | |
112e8700 | 10405 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10406 | tuple_name = "hw-awpt"; |
348d480f PA |
10407 | break; |
10408 | default: | |
10409 | internal_error (__FILE__, __LINE__, | |
10410 | _("Invalid hardware watchpoint type.")); | |
10411 | } | |
10412 | ||
46b9c129 | 10413 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10414 | uiout->field_int ("number", b->number); |
10415 | uiout->text (": "); | |
10416 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10417 | } |
10418 | ||
10419 | /* Implement the "print_recreate" breakpoint_ops method for | |
10420 | watchpoints. */ | |
10421 | ||
10422 | static void | |
10423 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10424 | { | |
3a5c3e22 PA |
10425 | struct watchpoint *w = (struct watchpoint *) b; |
10426 | ||
348d480f PA |
10427 | switch (b->type) |
10428 | { | |
10429 | case bp_watchpoint: | |
10430 | case bp_hardware_watchpoint: | |
10431 | fprintf_unfiltered (fp, "watch"); | |
10432 | break; | |
10433 | case bp_read_watchpoint: | |
10434 | fprintf_unfiltered (fp, "rwatch"); | |
10435 | break; | |
10436 | case bp_access_watchpoint: | |
10437 | fprintf_unfiltered (fp, "awatch"); | |
10438 | break; | |
10439 | default: | |
10440 | internal_error (__FILE__, __LINE__, | |
10441 | _("Invalid watchpoint type.")); | |
10442 | } | |
10443 | ||
3a5c3e22 | 10444 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10445 | print_recreate_thread (b, fp); |
348d480f PA |
10446 | } |
10447 | ||
427cd150 TT |
10448 | /* Implement the "explains_signal" breakpoint_ops method for |
10449 | watchpoints. */ | |
10450 | ||
47591c29 | 10451 | static int |
427cd150 TT |
10452 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10453 | { | |
10454 | /* A software watchpoint cannot cause a signal other than | |
10455 | GDB_SIGNAL_TRAP. */ | |
10456 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10457 | return 0; |
427cd150 | 10458 | |
47591c29 | 10459 | return 1; |
427cd150 TT |
10460 | } |
10461 | ||
348d480f PA |
10462 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10463 | ||
2060206e | 10464 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10465 | |
10466 | /* Implement the "insert" breakpoint_ops method for | |
10467 | masked hardware watchpoints. */ | |
10468 | ||
10469 | static int | |
10470 | insert_masked_watchpoint (struct bp_location *bl) | |
10471 | { | |
3a5c3e22 PA |
10472 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10473 | ||
10474 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10475 | bl->watchpoint_type); |
10476 | } | |
10477 | ||
10478 | /* Implement the "remove" breakpoint_ops method for | |
10479 | masked hardware watchpoints. */ | |
10480 | ||
10481 | static int | |
73971819 | 10482 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10483 | { |
3a5c3e22 PA |
10484 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10485 | ||
10486 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10487 | bl->watchpoint_type); |
10488 | } | |
10489 | ||
10490 | /* Implement the "resources_needed" breakpoint_ops method for | |
10491 | masked hardware watchpoints. */ | |
10492 | ||
10493 | static int | |
10494 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10495 | { | |
3a5c3e22 PA |
10496 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10497 | ||
10498 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10499 | } |
10500 | ||
10501 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10502 | masked hardware watchpoints. */ | |
10503 | ||
10504 | static int | |
10505 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10506 | { | |
10507 | return 0; | |
10508 | } | |
10509 | ||
10510 | /* Implement the "print_it" breakpoint_ops method for | |
10511 | masked hardware watchpoints. */ | |
10512 | ||
10513 | static enum print_stop_action | |
10514 | print_it_masked_watchpoint (bpstat bs) | |
10515 | { | |
10516 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10517 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10518 | |
10519 | /* Masked watchpoints have only one location. */ | |
10520 | gdb_assert (b->loc && b->loc->next == NULL); | |
10521 | ||
f303dbd6 PA |
10522 | annotate_watchpoint (b->number); |
10523 | maybe_print_thread_hit_breakpoint (uiout); | |
10524 | ||
348d480f PA |
10525 | switch (b->type) |
10526 | { | |
10527 | case bp_hardware_watchpoint: | |
112e8700 SM |
10528 | if (uiout->is_mi_like_p ()) |
10529 | uiout->field_string | |
10530 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10531 | break; |
10532 | ||
10533 | case bp_read_watchpoint: | |
112e8700 SM |
10534 | if (uiout->is_mi_like_p ()) |
10535 | uiout->field_string | |
10536 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10537 | break; |
10538 | ||
10539 | case bp_access_watchpoint: | |
112e8700 SM |
10540 | if (uiout->is_mi_like_p ()) |
10541 | uiout->field_string | |
10542 | ("reason", | |
348d480f PA |
10543 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10544 | break; | |
10545 | default: | |
10546 | internal_error (__FILE__, __LINE__, | |
10547 | _("Invalid hardware watchpoint type.")); | |
10548 | } | |
10549 | ||
10550 | mention (b); | |
112e8700 | 10551 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10552 | Check the underlying instruction at PC for the memory\n\ |
10553 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10554 | uiout->text ("\n"); |
9c06b0b4 TJB |
10555 | |
10556 | /* More than one watchpoint may have been triggered. */ | |
10557 | return PRINT_UNKNOWN; | |
10558 | } | |
10559 | ||
10560 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10561 | masked hardware watchpoints. */ | |
10562 | ||
10563 | static void | |
10564 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10565 | struct ui_out *uiout) | |
10566 | { | |
3a5c3e22 PA |
10567 | struct watchpoint *w = (struct watchpoint *) b; |
10568 | ||
9c06b0b4 TJB |
10569 | /* Masked watchpoints have only one location. */ |
10570 | gdb_assert (b->loc && b->loc->next == NULL); | |
10571 | ||
112e8700 SM |
10572 | uiout->text ("\tmask "); |
10573 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10574 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10575 | } |
10576 | ||
10577 | /* Implement the "print_mention" breakpoint_ops method for | |
10578 | masked hardware watchpoints. */ | |
10579 | ||
10580 | static void | |
10581 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10582 | { | |
3a5c3e22 | 10583 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10584 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10585 | const char *tuple_name; |
9c06b0b4 TJB |
10586 | |
10587 | switch (b->type) | |
10588 | { | |
10589 | case bp_hardware_watchpoint: | |
112e8700 | 10590 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10591 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10592 | break; |
10593 | case bp_read_watchpoint: | |
112e8700 | 10594 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10595 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10596 | break; |
10597 | case bp_access_watchpoint: | |
112e8700 | 10598 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10599 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10600 | break; |
10601 | default: | |
10602 | internal_error (__FILE__, __LINE__, | |
10603 | _("Invalid hardware watchpoint type.")); | |
10604 | } | |
10605 | ||
46b9c129 | 10606 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10607 | uiout->field_int ("number", b->number); |
10608 | uiout->text (": "); | |
10609 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10610 | } |
10611 | ||
10612 | /* Implement the "print_recreate" breakpoint_ops method for | |
10613 | masked hardware watchpoints. */ | |
10614 | ||
10615 | static void | |
10616 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10617 | { | |
3a5c3e22 | 10618 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10619 | char tmp[40]; |
10620 | ||
10621 | switch (b->type) | |
10622 | { | |
10623 | case bp_hardware_watchpoint: | |
10624 | fprintf_unfiltered (fp, "watch"); | |
10625 | break; | |
10626 | case bp_read_watchpoint: | |
10627 | fprintf_unfiltered (fp, "rwatch"); | |
10628 | break; | |
10629 | case bp_access_watchpoint: | |
10630 | fprintf_unfiltered (fp, "awatch"); | |
10631 | break; | |
10632 | default: | |
10633 | internal_error (__FILE__, __LINE__, | |
10634 | _("Invalid hardware watchpoint type.")); | |
10635 | } | |
10636 | ||
3a5c3e22 PA |
10637 | sprintf_vma (tmp, w->hw_wp_mask); |
10638 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10639 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10640 | } |
10641 | ||
10642 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10643 | ||
2060206e | 10644 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10645 | |
10646 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10647 | ||
10648 | static int | |
10649 | is_masked_watchpoint (const struct breakpoint *b) | |
10650 | { | |
10651 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10652 | } | |
10653 | ||
53a5351d JM |
10654 | /* accessflag: hw_write: watch write, |
10655 | hw_read: watch read, | |
10656 | hw_access: watch access (read or write) */ | |
c906108c | 10657 | static void |
bbc13ae3 | 10658 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10659 | int just_location, int internal) |
c906108c | 10660 | { |
c1fc2657 | 10661 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10662 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10663 | struct value *val, *mark, *result; |
bb9d5f81 | 10664 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10665 | const char *exp_start = NULL; |
10666 | const char *exp_end = NULL; | |
10667 | const char *tok, *end_tok; | |
9c06b0b4 | 10668 | int toklen = -1; |
bbc13ae3 KS |
10669 | const char *cond_start = NULL; |
10670 | const char *cond_end = NULL; | |
c906108c | 10671 | enum bptype bp_type; |
37e4754d | 10672 | int thread = -1; |
0cf6dd15 | 10673 | int pc = 0; |
9c06b0b4 TJB |
10674 | /* Flag to indicate whether we are going to use masks for |
10675 | the hardware watchpoint. */ | |
10676 | int use_mask = 0; | |
10677 | CORE_ADDR mask = 0; | |
c906108c | 10678 | |
37e4754d LM |
10679 | /* Make sure that we actually have parameters to parse. */ |
10680 | if (arg != NULL && arg[0] != '\0') | |
10681 | { | |
bbc13ae3 KS |
10682 | const char *value_start; |
10683 | ||
10684 | exp_end = arg + strlen (arg); | |
37e4754d | 10685 | |
9c06b0b4 TJB |
10686 | /* Look for "parameter value" pairs at the end |
10687 | of the arguments string. */ | |
bbc13ae3 | 10688 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10689 | { |
10690 | /* Skip whitespace at the end of the argument list. */ | |
10691 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10692 | tok--; | |
10693 | ||
10694 | /* Find the beginning of the last token. | |
10695 | This is the value of the parameter. */ | |
10696 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10697 | tok--; | |
10698 | value_start = tok + 1; | |
10699 | ||
10700 | /* Skip whitespace. */ | |
10701 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10702 | tok--; | |
10703 | ||
10704 | end_tok = tok; | |
10705 | ||
10706 | /* Find the beginning of the second to last token. | |
10707 | This is the parameter itself. */ | |
10708 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10709 | tok--; | |
10710 | tok++; | |
10711 | toklen = end_tok - tok + 1; | |
10712 | ||
61012eef | 10713 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10714 | { |
5d5658a1 | 10715 | struct thread_info *thr; |
9c06b0b4 TJB |
10716 | /* At this point we've found a "thread" token, which means |
10717 | the user is trying to set a watchpoint that triggers | |
10718 | only in a specific thread. */ | |
5d5658a1 | 10719 | const char *endp; |
37e4754d | 10720 | |
9c06b0b4 TJB |
10721 | if (thread != -1) |
10722 | error(_("You can specify only one thread.")); | |
37e4754d | 10723 | |
9c06b0b4 | 10724 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10725 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10726 | |
5d5658a1 | 10727 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10728 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10729 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10730 | |
5d5658a1 | 10731 | thread = thr->global_num; |
9c06b0b4 | 10732 | } |
61012eef | 10733 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10734 | { |
10735 | /* We've found a "mask" token, which means the user wants to | |
10736 | create a hardware watchpoint that is going to have the mask | |
10737 | facility. */ | |
10738 | struct value *mask_value, *mark; | |
37e4754d | 10739 | |
9c06b0b4 TJB |
10740 | if (use_mask) |
10741 | error(_("You can specify only one mask.")); | |
37e4754d | 10742 | |
9c06b0b4 | 10743 | use_mask = just_location = 1; |
37e4754d | 10744 | |
9c06b0b4 TJB |
10745 | mark = value_mark (); |
10746 | mask_value = parse_to_comma_and_eval (&value_start); | |
10747 | mask = value_as_address (mask_value); | |
10748 | value_free_to_mark (mark); | |
10749 | } | |
10750 | else | |
10751 | /* We didn't recognize what we found. We should stop here. */ | |
10752 | break; | |
37e4754d | 10753 | |
9c06b0b4 TJB |
10754 | /* Truncate the string and get rid of the "parameter value" pair before |
10755 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10756 | exp_end = tok; |
9c06b0b4 | 10757 | } |
37e4754d | 10758 | } |
bbc13ae3 KS |
10759 | else |
10760 | exp_end = arg; | |
37e4754d | 10761 | |
bbc13ae3 KS |
10762 | /* Parse the rest of the arguments. From here on out, everything |
10763 | is in terms of a newly allocated string instead of the original | |
10764 | ARG. */ | |
c906108c | 10765 | innermost_block = NULL; |
81b1e71c TT |
10766 | std::string expression (arg, exp_end - arg); |
10767 | exp_start = arg = expression.c_str (); | |
4d01a485 | 10768 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10769 | exp_end = arg; |
fa8a61dc TT |
10770 | /* Remove trailing whitespace from the expression before saving it. |
10771 | This makes the eventual display of the expression string a bit | |
10772 | prettier. */ | |
10773 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10774 | --exp_end; | |
10775 | ||
65d79d4b | 10776 | /* Checking if the expression is not constant. */ |
4d01a485 | 10777 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10778 | { |
10779 | int len; | |
10780 | ||
10781 | len = exp_end - exp_start; | |
10782 | while (len > 0 && isspace (exp_start[len - 1])) | |
10783 | len--; | |
10784 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10785 | } | |
10786 | ||
c906108c SS |
10787 | exp_valid_block = innermost_block; |
10788 | mark = value_mark (); | |
4d01a485 | 10789 | fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location); |
06a64a0b | 10790 | |
bb9d5f81 PP |
10791 | if (val != NULL && just_location) |
10792 | { | |
10793 | saved_bitpos = value_bitpos (val); | |
10794 | saved_bitsize = value_bitsize (val); | |
10795 | } | |
10796 | ||
06a64a0b TT |
10797 | if (just_location) |
10798 | { | |
9c06b0b4 TJB |
10799 | int ret; |
10800 | ||
06a64a0b | 10801 | exp_valid_block = NULL; |
a1442452 | 10802 | val = value_addr (result); |
06a64a0b TT |
10803 | release_value (val); |
10804 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10805 | |
10806 | if (use_mask) | |
10807 | { | |
10808 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10809 | mask); | |
10810 | if (ret == -1) | |
10811 | error (_("This target does not support masked watchpoints.")); | |
10812 | else if (ret == -2) | |
10813 | error (_("Invalid mask or memory region.")); | |
10814 | } | |
06a64a0b TT |
10815 | } |
10816 | else if (val != NULL) | |
fa4727a6 | 10817 | release_value (val); |
c906108c | 10818 | |
f1735a53 TT |
10819 | tok = skip_spaces (arg); |
10820 | end_tok = skip_to_space (tok); | |
c906108c SS |
10821 | |
10822 | toklen = end_tok - tok; | |
10823 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10824 | { | |
60e1c644 | 10825 | innermost_block = NULL; |
c906108c | 10826 | tok = cond_start = end_tok + 1; |
4d01a485 | 10827 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10828 | |
10829 | /* The watchpoint expression may not be local, but the condition | |
10830 | may still be. E.g.: `watch global if local > 0'. */ | |
10831 | cond_exp_valid_block = innermost_block; | |
10832 | ||
c906108c SS |
10833 | cond_end = tok; |
10834 | } | |
10835 | if (*tok) | |
8a3fe4f8 | 10836 | error (_("Junk at end of command.")); |
c906108c | 10837 | |
441d7c93 PA |
10838 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10839 | ||
10840 | /* Save this because create_internal_breakpoint below invalidates | |
10841 | 'wp_frame'. */ | |
10842 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10843 | |
10844 | /* If the expression is "local", then set up a "watchpoint scope" | |
10845 | breakpoint at the point where we've left the scope of the watchpoint | |
10846 | expression. Create the scope breakpoint before the watchpoint, so | |
10847 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10848 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10849 | { |
441d7c93 PA |
10850 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10851 | ||
10852 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10853 | { |
441d7c93 PA |
10854 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10855 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10856 | ||
edb3359d | 10857 | scope_breakpoint |
441d7c93 | 10858 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10859 | bp_watchpoint_scope, |
10860 | &momentary_breakpoint_ops); | |
d983da9c | 10861 | |
441d7c93 PA |
10862 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10863 | wp_frame = NULL; | |
10864 | ||
edb3359d | 10865 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10866 | |
edb3359d DJ |
10867 | /* Automatically delete the breakpoint when it hits. */ |
10868 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10869 | |
edb3359d | 10870 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10871 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10872 | |
edb3359d | 10873 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10874 | scope_breakpoint->loc->gdbarch = caller_arch; |
10875 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10876 | scope_breakpoint->loc->address |
a6d9a66e UW |
10877 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10878 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10879 | scope_breakpoint->type); |
10880 | } | |
d983da9c DJ |
10881 | } |
10882 | ||
e8369a73 AB |
10883 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10884 | watchpoints here even if hardware watchpoints are turned off, a call | |
10885 | to update_watchpoint later in this function will cause the type to | |
10886 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10887 | ||
10888 | if (accessflag == hw_read) | |
10889 | bp_type = bp_read_watchpoint; | |
10890 | else if (accessflag == hw_access) | |
10891 | bp_type = bp_access_watchpoint; | |
10892 | else | |
10893 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10894 | |
b270e6f9 | 10895 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10896 | |
348d480f | 10897 | if (use_mask) |
b270e6f9 | 10898 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10899 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10900 | else |
b270e6f9 | 10901 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10902 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10903 | w->thread = thread; |
10904 | w->disposition = disp_donttouch; | |
10905 | w->pspace = current_program_space; | |
b22e99fd | 10906 | w->exp = std::move (exp); |
3a5c3e22 PA |
10907 | w->exp_valid_block = exp_valid_block; |
10908 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10909 | if (just_location) |
10910 | { | |
10911 | struct type *t = value_type (val); | |
10912 | CORE_ADDR addr = value_as_address (val); | |
06a64a0b | 10913 | |
43cc5389 TT |
10914 | w->exp_string_reparse |
10915 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10916 | |
3a5c3e22 | 10917 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10918 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10919 | } |
10920 | else | |
3a5c3e22 | 10921 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10922 | |
10923 | if (use_mask) | |
10924 | { | |
3a5c3e22 | 10925 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10926 | } |
10927 | else | |
10928 | { | |
3a5c3e22 | 10929 | w->val = val; |
bb9d5f81 PP |
10930 | w->val_bitpos = saved_bitpos; |
10931 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10932 | w->val_valid = 1; |
9c06b0b4 | 10933 | } |
77b06cd7 | 10934 | |
c906108c | 10935 | if (cond_start) |
c1fc2657 | 10936 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10937 | else |
c1fc2657 | 10938 | w->cond_string = 0; |
c5aa993b | 10939 | |
441d7c93 | 10940 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10941 | { |
441d7c93 | 10942 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10943 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10944 | } |
c906108c | 10945 | else |
f6bc2008 | 10946 | { |
3a5c3e22 PA |
10947 | w->watchpoint_frame = null_frame_id; |
10948 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10949 | } |
c906108c | 10950 | |
d983da9c | 10951 | if (scope_breakpoint != NULL) |
c906108c | 10952 | { |
d983da9c DJ |
10953 | /* The scope breakpoint is related to the watchpoint. We will |
10954 | need to act on them together. */ | |
c1fc2657 | 10955 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10956 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10957 | } |
d983da9c | 10958 | |
06a64a0b TT |
10959 | if (!just_location) |
10960 | value_free_to_mark (mark); | |
2d134ed3 | 10961 | |
b270e6f9 TT |
10962 | /* Finally update the new watchpoint. This creates the locations |
10963 | that should be inserted. */ | |
10964 | update_watchpoint (w.get (), 1); | |
a9634178 | 10965 | |
b270e6f9 | 10966 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10967 | } |
10968 | ||
e09342b5 | 10969 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10970 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10971 | |
c906108c | 10972 | static int |
a9634178 | 10973 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
10974 | { |
10975 | int found_memory_cnt = 0; | |
2e70b7b9 | 10976 | struct value *head = v; |
c906108c SS |
10977 | |
10978 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10979 | if (!can_use_hw_watchpoints) |
c906108c | 10980 | return 0; |
c5aa993b | 10981 | |
5c44784c JM |
10982 | /* Make sure that the value of the expression depends only upon |
10983 | memory contents, and values computed from them within GDB. If we | |
10984 | find any register references or function calls, we can't use a | |
10985 | hardware watchpoint. | |
10986 | ||
10987 | The idea here is that evaluating an expression generates a series | |
10988 | of values, one holding the value of every subexpression. (The | |
10989 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10990 | a*b+c.) GDB's values hold almost enough information to establish | |
10991 | the criteria given above --- they identify memory lvalues, | |
10992 | register lvalues, computed values, etcetera. So we can evaluate | |
10993 | the expression, and then scan the chain of values that leaves | |
10994 | behind to decide whether we can detect any possible change to the | |
10995 | expression's final value using only hardware watchpoints. | |
10996 | ||
10997 | However, I don't think that the values returned by inferior | |
10998 | function calls are special in any way. So this function may not | |
10999 | notice that an expression involving an inferior function call | |
11000 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11001 | for (; v; v = value_next (v)) |
c906108c | 11002 | { |
5c44784c | 11003 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11004 | { |
8464be76 DJ |
11005 | if (v != head && value_lazy (v)) |
11006 | /* A lazy memory lvalue in the chain is one that GDB never | |
11007 | needed to fetch; we either just used its address (e.g., | |
11008 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11009 | in `a,b'). This doesn't apply to HEAD; if that is | |
11010 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11011 | ; |
53a5351d | 11012 | else |
5c44784c JM |
11013 | { |
11014 | /* Ahh, memory we actually used! Check if we can cover | |
11015 | it with hardware watchpoints. */ | |
df407dfe | 11016 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11017 | |
11018 | /* We only watch structs and arrays if user asked for it | |
11019 | explicitly, never if they just happen to appear in a | |
11020 | middle of some value chain. */ | |
11021 | if (v == head | |
11022 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11023 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11024 | { | |
42ae5230 | 11025 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11026 | int len; |
11027 | int num_regs; | |
11028 | ||
a9634178 | 11029 | len = (target_exact_watchpoints |
e09342b5 TJB |
11030 | && is_scalar_type_recursive (vtype))? |
11031 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11032 | |
e09342b5 TJB |
11033 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11034 | if (!num_regs) | |
2e70b7b9 MS |
11035 | return 0; |
11036 | else | |
e09342b5 | 11037 | found_memory_cnt += num_regs; |
2e70b7b9 | 11038 | } |
5c44784c | 11039 | } |
c5aa993b | 11040 | } |
5086187c AC |
11041 | else if (VALUE_LVAL (v) != not_lval |
11042 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11043 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11044 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11045 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11046 | } |
11047 | ||
11048 | /* The expression itself looks suitable for using a hardware | |
11049 | watchpoint, but give the target machine a chance to reject it. */ | |
11050 | return found_memory_cnt; | |
11051 | } | |
11052 | ||
8b93c638 | 11053 | void |
f2fc3015 | 11054 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11055 | { |
84f4c1fe | 11056 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11057 | } |
11058 | ||
06a64a0b TT |
11059 | /* A helper function that looks for the "-location" argument and then |
11060 | calls watch_command_1. */ | |
11061 | ||
11062 | static void | |
11063 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11064 | { | |
11065 | int just_location = 0; | |
11066 | ||
11067 | if (arg | |
11068 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11069 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11070 | { | |
e9cafbcc | 11071 | arg = skip_spaces (arg); |
06a64a0b TT |
11072 | just_location = 1; |
11073 | } | |
11074 | ||
84f4c1fe | 11075 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11076 | } |
8926118c | 11077 | |
c5aa993b | 11078 | static void |
fba45db2 | 11079 | watch_command (char *arg, int from_tty) |
c906108c | 11080 | { |
06a64a0b | 11081 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11082 | } |
11083 | ||
8b93c638 | 11084 | void |
f2fc3015 | 11085 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11086 | { |
84f4c1fe | 11087 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11088 | } |
8926118c | 11089 | |
c5aa993b | 11090 | static void |
fba45db2 | 11091 | rwatch_command (char *arg, int from_tty) |
c906108c | 11092 | { |
06a64a0b | 11093 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11094 | } |
11095 | ||
8b93c638 | 11096 | void |
f2fc3015 | 11097 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11098 | { |
84f4c1fe | 11099 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11100 | } |
8926118c | 11101 | |
c5aa993b | 11102 | static void |
fba45db2 | 11103 | awatch_command (char *arg, int from_tty) |
c906108c | 11104 | { |
06a64a0b | 11105 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11106 | } |
c906108c | 11107 | \f |
c5aa993b | 11108 | |
cfc31633 PA |
11109 | /* Data for the FSM that manages the until(location)/advance commands |
11110 | in infcmd.c. Here because it uses the mechanisms of | |
11111 | breakpoints. */ | |
c906108c | 11112 | |
cfc31633 | 11113 | struct until_break_fsm |
bfec99b2 | 11114 | { |
cfc31633 PA |
11115 | /* The base class. */ |
11116 | struct thread_fsm thread_fsm; | |
11117 | ||
11118 | /* The thread that as current when the command was executed. */ | |
11119 | int thread; | |
11120 | ||
11121 | /* The breakpoint set at the destination location. */ | |
11122 | struct breakpoint *location_breakpoint; | |
11123 | ||
11124 | /* Breakpoint set at the return address in the caller frame. May be | |
11125 | NULL. */ | |
11126 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11127 | }; |
11128 | ||
8980e177 PA |
11129 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11130 | struct thread_info *thread); | |
11131 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11132 | struct thread_info *thread); | |
cfc31633 PA |
11133 | static enum async_reply_reason |
11134 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11135 | ||
11136 | /* until_break_fsm's vtable. */ | |
11137 | ||
11138 | static struct thread_fsm_ops until_break_fsm_ops = | |
11139 | { | |
11140 | NULL, /* dtor */ | |
11141 | until_break_fsm_clean_up, | |
11142 | until_break_fsm_should_stop, | |
11143 | NULL, /* return_value */ | |
11144 | until_break_fsm_async_reply_reason, | |
11145 | }; | |
11146 | ||
11147 | /* Allocate a new until_break_command_fsm. */ | |
11148 | ||
11149 | static struct until_break_fsm * | |
8980e177 | 11150 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
cfc31633 PA |
11151 | struct breakpoint *location_breakpoint, |
11152 | struct breakpoint *caller_breakpoint) | |
11153 | { | |
11154 | struct until_break_fsm *sm; | |
11155 | ||
11156 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11157 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11158 | |
11159 | sm->thread = thread; | |
11160 | sm->location_breakpoint = location_breakpoint; | |
11161 | sm->caller_breakpoint = caller_breakpoint; | |
11162 | ||
11163 | return sm; | |
11164 | } | |
11165 | ||
11166 | /* Implementation of the 'should_stop' FSM method for the | |
11167 | until(location)/advance commands. */ | |
11168 | ||
11169 | static int | |
8980e177 PA |
11170 | until_break_fsm_should_stop (struct thread_fsm *self, |
11171 | struct thread_info *tp) | |
cfc31633 PA |
11172 | { |
11173 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11174 | |
11175 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11176 | sm->location_breakpoint) != NULL | |
11177 | || (sm->caller_breakpoint != NULL | |
11178 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11179 | sm->caller_breakpoint) != NULL)) | |
11180 | thread_fsm_set_finished (self); | |
11181 | ||
11182 | return 1; | |
11183 | } | |
11184 | ||
11185 | /* Implementation of the 'clean_up' FSM method for the | |
11186 | until(location)/advance commands. */ | |
11187 | ||
c2c6d25f | 11188 | static void |
8980e177 PA |
11189 | until_break_fsm_clean_up (struct thread_fsm *self, |
11190 | struct thread_info *thread) | |
43ff13b4 | 11191 | { |
cfc31633 | 11192 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11193 | |
cfc31633 PA |
11194 | /* Clean up our temporary breakpoints. */ |
11195 | if (sm->location_breakpoint != NULL) | |
11196 | { | |
11197 | delete_breakpoint (sm->location_breakpoint); | |
11198 | sm->location_breakpoint = NULL; | |
11199 | } | |
11200 | if (sm->caller_breakpoint != NULL) | |
11201 | { | |
11202 | delete_breakpoint (sm->caller_breakpoint); | |
11203 | sm->caller_breakpoint = NULL; | |
11204 | } | |
11205 | delete_longjmp_breakpoint (sm->thread); | |
11206 | } | |
11207 | ||
11208 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11209 | until(location)/advance commands. */ | |
11210 | ||
11211 | static enum async_reply_reason | |
11212 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11213 | { | |
11214 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11215 | } |
11216 | ||
c906108c | 11217 | void |
f2fc3015 | 11218 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11219 | { |
8556afb4 PA |
11220 | struct frame_info *frame; |
11221 | struct gdbarch *frame_gdbarch; | |
11222 | struct frame_id stack_frame_id; | |
11223 | struct frame_id caller_frame_id; | |
cfc31633 PA |
11224 | struct breakpoint *location_breakpoint; |
11225 | struct breakpoint *caller_breakpoint = NULL; | |
ffc2605c | 11226 | struct cleanup *old_chain; |
186c406b TT |
11227 | int thread; |
11228 | struct thread_info *tp; | |
cfc31633 | 11229 | struct until_break_fsm *sm; |
c906108c | 11230 | |
70509625 | 11231 | clear_proceed_status (0); |
c906108c SS |
11232 | |
11233 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11234 | this function. */ |
c5aa993b | 11235 | |
ffc2605c | 11236 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11237 | |
6c5b2ebe PA |
11238 | std::vector<symtab_and_line> sals |
11239 | = (last_displayed_sal_is_valid () | |
11240 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11241 | get_last_displayed_symtab (), | |
11242 | get_last_displayed_line ()) | |
11243 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11244 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11245 | |
6c5b2ebe | 11246 | if (sals.size () != 1) |
8a3fe4f8 | 11247 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11248 | |
6c5b2ebe | 11249 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11250 | |
c906108c | 11251 | if (*arg) |
8a3fe4f8 | 11252 | error (_("Junk at end of arguments.")); |
c5aa993b | 11253 | |
c906108c | 11254 | resolve_sal_pc (&sal); |
c5aa993b | 11255 | |
186c406b | 11256 | tp = inferior_thread (); |
5d5658a1 | 11257 | thread = tp->global_num; |
186c406b | 11258 | |
883bc8d1 PA |
11259 | old_chain = make_cleanup (null_cleanup, NULL); |
11260 | ||
8556afb4 PA |
11261 | /* Note linespec handling above invalidates the frame chain. |
11262 | Installing a breakpoint also invalidates the frame chain (as it | |
11263 | may need to switch threads), so do any frame handling before | |
11264 | that. */ | |
11265 | ||
11266 | frame = get_selected_frame (NULL); | |
11267 | frame_gdbarch = get_frame_arch (frame); | |
11268 | stack_frame_id = get_stack_frame_id (frame); | |
11269 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11270 | |
ae66c1fc EZ |
11271 | /* Keep within the current frame, or in frames called by the current |
11272 | one. */ | |
edb3359d | 11273 | |
883bc8d1 | 11274 | if (frame_id_p (caller_frame_id)) |
c906108c | 11275 | { |
883bc8d1 | 11276 | struct symtab_and_line sal2; |
cfc31633 | 11277 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11278 | |
11279 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11280 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11281 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11282 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11283 | sal2, | |
11284 | caller_frame_id, | |
11285 | bp_until); | |
11286 | make_cleanup_delete_breakpoint (caller_breakpoint); | |
186c406b | 11287 | |
883bc8d1 | 11288 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11289 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11290 | } |
c5aa993b | 11291 | |
c70a6932 JK |
11292 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11293 | frame = NULL; | |
11294 | ||
883bc8d1 PA |
11295 | if (anywhere) |
11296 | /* If the user told us to continue until a specified location, | |
11297 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11298 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11299 | null_frame_id, bp_until); | |
883bc8d1 PA |
11300 | else |
11301 | /* Otherwise, specify the selected frame, because we want to stop | |
11302 | only at the very same frame. */ | |
cfc31633 PA |
11303 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11304 | stack_frame_id, bp_until); | |
11305 | make_cleanup_delete_breakpoint (location_breakpoint); | |
883bc8d1 | 11306 | |
8980e177 | 11307 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
5d5658a1 | 11308 | location_breakpoint, caller_breakpoint); |
cfc31633 | 11309 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11310 | |
cfc31633 | 11311 | discard_cleanups (old_chain); |
f107f563 | 11312 | |
cfc31633 | 11313 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11314 | } |
ae66c1fc | 11315 | |
c906108c SS |
11316 | /* This function attempts to parse an optional "if <cond>" clause |
11317 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11318 | |
c906108c SS |
11319 | Else, it returns a pointer to the condition string. (It does not |
11320 | attempt to evaluate the string against a particular block.) And, | |
11321 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11322 | if clause in the arg string. */ |
53a5351d | 11323 | |
63160a43 PA |
11324 | const char * |
11325 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11326 | { |
63160a43 | 11327 | const char *cond_string; |
c5aa993b JM |
11328 | |
11329 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11330 | return NULL; |
c5aa993b | 11331 | |
4a64f543 | 11332 | /* Skip the "if" keyword. */ |
c906108c | 11333 | (*arg) += 2; |
c5aa993b | 11334 | |
c906108c | 11335 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11336 | condition string. */ |
f1735a53 | 11337 | *arg = skip_spaces (*arg); |
c906108c | 11338 | cond_string = *arg; |
c5aa993b | 11339 | |
4a64f543 MS |
11340 | /* Assume that the condition occupies the remainder of the arg |
11341 | string. */ | |
c906108c | 11342 | (*arg) += strlen (cond_string); |
c5aa993b | 11343 | |
c906108c SS |
11344 | return cond_string; |
11345 | } | |
c5aa993b | 11346 | |
c906108c SS |
11347 | /* Commands to deal with catching events, such as signals, exceptions, |
11348 | process start/exit, etc. */ | |
c5aa993b JM |
11349 | |
11350 | typedef enum | |
11351 | { | |
44feb3ce TT |
11352 | catch_fork_temporary, catch_vfork_temporary, |
11353 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11354 | } |
11355 | catch_fork_kind; | |
11356 | ||
c906108c | 11357 | static void |
63160a43 | 11358 | catch_fork_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11359 | struct cmd_list_element *command) |
c906108c | 11360 | { |
63160a43 | 11361 | const char *arg = arg_entry; |
a6d9a66e | 11362 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11363 | const char *cond_string = NULL; |
44feb3ce TT |
11364 | catch_fork_kind fork_kind; |
11365 | int tempflag; | |
11366 | ||
11367 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11368 | tempflag = (fork_kind == catch_fork_temporary | |
11369 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11370 | |
44feb3ce TT |
11371 | if (!arg) |
11372 | arg = ""; | |
f1735a53 | 11373 | arg = skip_spaces (arg); |
c5aa993b | 11374 | |
c906108c | 11375 | /* The allowed syntax is: |
c5aa993b JM |
11376 | catch [v]fork |
11377 | catch [v]fork if <cond> | |
11378 | ||
4a64f543 | 11379 | First, check if there's an if clause. */ |
c906108c | 11380 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11381 | |
c906108c | 11382 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11383 | error (_("Junk at end of arguments.")); |
c5aa993b | 11384 | |
c906108c | 11385 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11386 | and enable reporting of such events. */ |
c5aa993b JM |
11387 | switch (fork_kind) |
11388 | { | |
44feb3ce TT |
11389 | case catch_fork_temporary: |
11390 | case catch_fork_permanent: | |
a6d9a66e | 11391 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11392 | &catch_fork_breakpoint_ops); |
c906108c | 11393 | break; |
44feb3ce TT |
11394 | case catch_vfork_temporary: |
11395 | case catch_vfork_permanent: | |
a6d9a66e | 11396 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11397 | &catch_vfork_breakpoint_ops); |
c906108c | 11398 | break; |
c5aa993b | 11399 | default: |
8a3fe4f8 | 11400 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11401 | break; |
c5aa993b | 11402 | } |
c906108c SS |
11403 | } |
11404 | ||
11405 | static void | |
63160a43 | 11406 | catch_exec_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11407 | struct cmd_list_element *command) |
c906108c | 11408 | { |
63160a43 | 11409 | const char *arg = arg_entry; |
a6d9a66e | 11410 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11411 | int tempflag; |
63160a43 | 11412 | const char *cond_string = NULL; |
c906108c | 11413 | |
44feb3ce TT |
11414 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11415 | ||
11416 | if (!arg) | |
11417 | arg = ""; | |
f1735a53 | 11418 | arg = skip_spaces (arg); |
c906108c SS |
11419 | |
11420 | /* The allowed syntax is: | |
c5aa993b JM |
11421 | catch exec |
11422 | catch exec if <cond> | |
c906108c | 11423 | |
4a64f543 | 11424 | First, check if there's an if clause. */ |
c906108c SS |
11425 | cond_string = ep_parse_optional_if_clause (&arg); |
11426 | ||
11427 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11428 | error (_("Junk at end of arguments.")); |
c906108c | 11429 | |
b270e6f9 TT |
11430 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11431 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11432 | &catch_exec_breakpoint_ops); |
11433 | c->exec_pathname = NULL; | |
11434 | ||
b270e6f9 | 11435 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11436 | } |
c5aa993b | 11437 | |
9ac4176b | 11438 | void |
28010a5d PA |
11439 | init_ada_exception_breakpoint (struct breakpoint *b, |
11440 | struct gdbarch *gdbarch, | |
11441 | struct symtab_and_line sal, | |
f2fc3015 | 11442 | const char *addr_string, |
c0a91b2b | 11443 | const struct breakpoint_ops *ops, |
28010a5d | 11444 | int tempflag, |
349774ef | 11445 | int enabled, |
28010a5d | 11446 | int from_tty) |
f7f9143b | 11447 | { |
f7f9143b JB |
11448 | if (from_tty) |
11449 | { | |
5af949e3 UW |
11450 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11451 | if (!loc_gdbarch) | |
11452 | loc_gdbarch = gdbarch; | |
11453 | ||
6c95b8df PA |
11454 | describe_other_breakpoints (loc_gdbarch, |
11455 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11456 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11457 | version for exception catchpoints, because two catchpoints | |
11458 | used for different exception names will use the same address. | |
11459 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11460 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11461 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11462 | the user what type of catchpoint it is. The above is good |
11463 | enough for now, though. */ | |
11464 | } | |
11465 | ||
28010a5d | 11466 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11467 | |
349774ef | 11468 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11469 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11470 | b->location = string_to_event_location (&addr_string, |
11471 | language_def (language_ada)); | |
f7f9143b | 11472 | b->language = language_ada; |
f7f9143b JB |
11473 | } |
11474 | ||
c906108c | 11475 | static void |
981a3fb3 | 11476 | catch_command (const char *arg, int from_tty) |
c906108c | 11477 | { |
44feb3ce | 11478 | error (_("Catch requires an event name.")); |
c906108c SS |
11479 | } |
11480 | \f | |
11481 | ||
11482 | static void | |
981a3fb3 | 11483 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11484 | { |
44feb3ce | 11485 | error (_("Catch requires an event name.")); |
c906108c SS |
11486 | } |
11487 | ||
81b1e71c | 11488 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11489 | |
11490 | static int | |
81b1e71c | 11491 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11492 | { |
81b1e71c TT |
11493 | uintptr_t ua = (uintptr_t) a; |
11494 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11495 | |
81b1e71c | 11496 | if (a->number < b->number) |
8a2c437b | 11497 | return -1; |
81b1e71c | 11498 | else if (a->number > b->number) |
8a2c437b TT |
11499 | return 1; |
11500 | ||
11501 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11502 | the number 0. */ | |
11503 | if (ua < ub) | |
11504 | return -1; | |
94b0e70d | 11505 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11506 | } |
11507 | ||
80f8a6eb | 11508 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11509 | |
11510 | static void | |
fba45db2 | 11511 | clear_command (char *arg, int from_tty) |
c906108c | 11512 | { |
81b1e71c | 11513 | struct breakpoint *b; |
c906108c | 11514 | int default_match; |
c906108c SS |
11515 | int i; |
11516 | ||
6c5b2ebe PA |
11517 | std::vector<symtab_and_line> decoded_sals; |
11518 | symtab_and_line last_sal; | |
11519 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11520 | if (arg) |
11521 | { | |
6c5b2ebe PA |
11522 | decoded_sals |
11523 | = decode_line_with_current_source (arg, | |
11524 | (DECODE_LINE_FUNFIRSTLINE | |
11525 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11526 | default_match = 0; |
6c5b2ebe | 11527 | sals = decoded_sals; |
c906108c SS |
11528 | } |
11529 | else | |
11530 | { | |
1bfeeb0f JL |
11531 | /* Set sal's line, symtab, pc, and pspace to the values |
11532 | corresponding to the last call to print_frame_info. If the | |
11533 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11534 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11535 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11536 | error (_("No source file specified.")); |
c906108c | 11537 | |
c906108c | 11538 | default_match = 1; |
6c5b2ebe | 11539 | sals = last_sal; |
c906108c SS |
11540 | } |
11541 | ||
4a64f543 MS |
11542 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11543 | seems, because all existing breakpoints typically have both | |
11544 | file/line and pc set. So, if clear is given file/line, we can | |
11545 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11546 | |
11547 | We only support clearing given the address explicitly | |
11548 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11549 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11550 | due to optimization, all in one block. |
4a64f543 MS |
11551 | |
11552 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11553 | PC corresponding to the same file:line, the breakpoint won't |
11554 | be cleared. We probably can still clear the breakpoint, but | |
11555 | since the other PC value is never presented to user, user | |
11556 | can only find it by guessing, and it does not seem important | |
11557 | to support that. */ | |
11558 | ||
4a64f543 MS |
11559 | /* For each line spec given, delete bps which correspond to it. Do |
11560 | it in two passes, solely to preserve the current behavior that | |
11561 | from_tty is forced true if we delete more than one | |
11562 | breakpoint. */ | |
c906108c | 11563 | |
81b1e71c | 11564 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11565 | for (const auto &sal : sals) |
c906108c | 11566 | { |
05cba821 JK |
11567 | const char *sal_fullname; |
11568 | ||
c906108c | 11569 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11570 | If line given (pc == 0), clear all bpts on specified line. |
11571 | If defaulting, clear all bpts on default line | |
c906108c | 11572 | or at default pc. |
c5aa993b JM |
11573 | |
11574 | defaulting sal.pc != 0 tests to do | |
11575 | ||
11576 | 0 1 pc | |
11577 | 1 1 pc _and_ line | |
11578 | 0 0 line | |
11579 | 1 0 <can't happen> */ | |
c906108c | 11580 | |
05cba821 JK |
11581 | sal_fullname = (sal.symtab == NULL |
11582 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11583 | |
4a64f543 | 11584 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11585 | ALL_BREAKPOINTS (b) |
c5aa993b | 11586 | { |
0d381245 | 11587 | int match = 0; |
4a64f543 | 11588 | /* Are we going to delete b? */ |
cc60f2e3 | 11589 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11590 | { |
11591 | struct bp_location *loc = b->loc; | |
11592 | for (; loc; loc = loc->next) | |
11593 | { | |
f8eba3c6 TT |
11594 | /* If the user specified file:line, don't allow a PC |
11595 | match. This matches historical gdb behavior. */ | |
11596 | int pc_match = (!sal.explicit_line | |
11597 | && sal.pc | |
11598 | && (loc->pspace == sal.pspace) | |
11599 | && (loc->address == sal.pc) | |
11600 | && (!section_is_overlay (loc->section) | |
11601 | || loc->section == sal.section)); | |
4aac40c8 TT |
11602 | int line_match = 0; |
11603 | ||
11604 | if ((default_match || sal.explicit_line) | |
2f202fde | 11605 | && loc->symtab != NULL |
05cba821 | 11606 | && sal_fullname != NULL |
4aac40c8 | 11607 | && sal.pspace == loc->pspace |
05cba821 JK |
11608 | && loc->line_number == sal.line |
11609 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11610 | sal_fullname) == 0) | |
11611 | line_match = 1; | |
4aac40c8 | 11612 | |
0d381245 VP |
11613 | if (pc_match || line_match) |
11614 | { | |
11615 | match = 1; | |
11616 | break; | |
11617 | } | |
11618 | } | |
11619 | } | |
11620 | ||
11621 | if (match) | |
81b1e71c | 11622 | found.push_back (b); |
c906108c | 11623 | } |
80f8a6eb | 11624 | } |
8a2c437b | 11625 | |
80f8a6eb | 11626 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11627 | if (found.empty ()) |
80f8a6eb MS |
11628 | { |
11629 | if (arg) | |
8a3fe4f8 | 11630 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11631 | else |
8a3fe4f8 | 11632 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11633 | } |
c906108c | 11634 | |
8a2c437b | 11635 | /* Remove duplicates from the vec. */ |
81b1e71c TT |
11636 | std::sort (found.begin (), found.end (), |
11637 | [] (const breakpoint *a, const breakpoint *b) | |
11638 | { | |
11639 | return compare_breakpoints (a, b) < 0; | |
11640 | }); | |
11641 | found.erase (std::unique (found.begin (), found.end (), | |
11642 | [] (const breakpoint *a, const breakpoint *b) | |
11643 | { | |
11644 | return compare_breakpoints (a, b) == 0; | |
11645 | }), | |
11646 | found.end ()); | |
8a2c437b | 11647 | |
81b1e71c | 11648 | if (found.size () > 1) |
4a64f543 | 11649 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11650 | if (from_tty) |
a3f17187 | 11651 | { |
81b1e71c | 11652 | if (found.size () == 1) |
a3f17187 AC |
11653 | printf_unfiltered (_("Deleted breakpoint ")); |
11654 | else | |
11655 | printf_unfiltered (_("Deleted breakpoints ")); | |
11656 | } | |
d6e956e5 | 11657 | |
81b1e71c | 11658 | for (breakpoint *iter : found) |
80f8a6eb | 11659 | { |
c5aa993b | 11660 | if (from_tty) |
81b1e71c TT |
11661 | printf_unfiltered ("%d ", iter->number); |
11662 | delete_breakpoint (iter); | |
c906108c | 11663 | } |
80f8a6eb MS |
11664 | if (from_tty) |
11665 | putchar_unfiltered ('\n'); | |
c906108c SS |
11666 | } |
11667 | \f | |
11668 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11669 | all breakpoints that are marked for deletion, whether hit or not. | |
11670 | This is called after any breakpoint is hit, or after errors. */ | |
11671 | ||
11672 | void | |
fba45db2 | 11673 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11674 | { |
35df4500 | 11675 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11676 | |
11677 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11678 | if (bs->breakpoint_at |
11679 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11680 | && bs->stop) |
f431efe5 | 11681 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11682 | |
35df4500 | 11683 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11684 | { |
b5de0fa7 | 11685 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11686 | delete_breakpoint (b); |
11687 | } | |
c906108c SS |
11688 | } |
11689 | ||
4a64f543 MS |
11690 | /* A comparison function for bp_location AP and BP being interfaced to |
11691 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11692 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11693 | secondarily by ordering first permanent elements and |
4a64f543 | 11694 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11695 | qsort being an unstable algorithm. */ |
876fa593 JK |
11696 | |
11697 | static int | |
f5336ca5 | 11698 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11699 | { |
9a3c8263 SM |
11700 | const struct bp_location *a = *(const struct bp_location **) ap; |
11701 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11702 | |
11703 | if (a->address != b->address) | |
11704 | return (a->address > b->address) - (a->address < b->address); | |
11705 | ||
dea2aa5f LM |
11706 | /* Sort locations at the same address by their pspace number, keeping |
11707 | locations of the same inferior (in a multi-inferior environment) | |
11708 | grouped. */ | |
11709 | ||
11710 | if (a->pspace->num != b->pspace->num) | |
11711 | return ((a->pspace->num > b->pspace->num) | |
11712 | - (a->pspace->num < b->pspace->num)); | |
11713 | ||
876fa593 | 11714 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11715 | if (a->permanent != b->permanent) |
11716 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11717 | |
c56a97f9 JK |
11718 | /* Make the internal GDB representation stable across GDB runs |
11719 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11720 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11721 | |
11722 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11723 | return ((a->owner->number > b->owner->number) |
11724 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11725 | |
11726 | return (a > b) - (a < b); | |
11727 | } | |
11728 | ||
f5336ca5 PA |
11729 | /* Set bp_locations_placed_address_before_address_max and |
11730 | bp_locations_shadow_len_after_address_max according to the current | |
11731 | content of the bp_locations array. */ | |
f7545552 TT |
11732 | |
11733 | static void | |
f5336ca5 | 11734 | bp_locations_target_extensions_update (void) |
f7545552 | 11735 | { |
876fa593 JK |
11736 | struct bp_location *bl, **blp_tmp; |
11737 | ||
f5336ca5 PA |
11738 | bp_locations_placed_address_before_address_max = 0; |
11739 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11740 | |
11741 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11742 | { | |
11743 | CORE_ADDR start, end, addr; | |
11744 | ||
11745 | if (!bp_location_has_shadow (bl)) | |
11746 | continue; | |
11747 | ||
11748 | start = bl->target_info.placed_address; | |
11749 | end = start + bl->target_info.shadow_len; | |
11750 | ||
11751 | gdb_assert (bl->address >= start); | |
11752 | addr = bl->address - start; | |
f5336ca5 PA |
11753 | if (addr > bp_locations_placed_address_before_address_max) |
11754 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11755 | |
11756 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11757 | ||
11758 | gdb_assert (bl->address < end); | |
11759 | addr = end - bl->address; | |
f5336ca5 PA |
11760 | if (addr > bp_locations_shadow_len_after_address_max) |
11761 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11762 | } |
f7545552 TT |
11763 | } |
11764 | ||
1e4d1764 YQ |
11765 | /* Download tracepoint locations if they haven't been. */ |
11766 | ||
11767 | static void | |
11768 | download_tracepoint_locations (void) | |
11769 | { | |
7ed2c994 | 11770 | struct breakpoint *b; |
dd2e65cc | 11771 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11772 | |
5ed8105e | 11773 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11774 | |
7ed2c994 | 11775 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11776 | { |
7ed2c994 | 11777 | struct bp_location *bl; |
1e4d1764 | 11778 | struct tracepoint *t; |
f2a8bc8a | 11779 | int bp_location_downloaded = 0; |
1e4d1764 | 11780 | |
7ed2c994 | 11781 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11782 | ? !may_insert_fast_tracepoints |
11783 | : !may_insert_tracepoints)) | |
11784 | continue; | |
11785 | ||
dd2e65cc YQ |
11786 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11787 | { | |
11788 | if (target_can_download_tracepoint ()) | |
11789 | can_download_tracepoint = TRIBOOL_TRUE; | |
11790 | else | |
11791 | can_download_tracepoint = TRIBOOL_FALSE; | |
11792 | } | |
11793 | ||
11794 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11795 | break; | |
11796 | ||
7ed2c994 YQ |
11797 | for (bl = b->loc; bl; bl = bl->next) |
11798 | { | |
11799 | /* In tracepoint, locations are _never_ duplicated, so | |
11800 | should_be_inserted is equivalent to | |
11801 | unduplicated_should_be_inserted. */ | |
11802 | if (!should_be_inserted (bl) || bl->inserted) | |
11803 | continue; | |
1e4d1764 | 11804 | |
7ed2c994 | 11805 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11806 | |
7ed2c994 | 11807 | target_download_tracepoint (bl); |
1e4d1764 | 11808 | |
7ed2c994 | 11809 | bl->inserted = 1; |
f2a8bc8a | 11810 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11811 | } |
11812 | t = (struct tracepoint *) b; | |
11813 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
11814 | if (bp_location_downloaded) |
11815 | observer_notify_breakpoint_modified (b); | |
1e4d1764 | 11816 | } |
1e4d1764 YQ |
11817 | } |
11818 | ||
934709f0 PW |
11819 | /* Swap the insertion/duplication state between two locations. */ |
11820 | ||
11821 | static void | |
11822 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11823 | { | |
11824 | const int left_inserted = left->inserted; | |
11825 | const int left_duplicate = left->duplicate; | |
b775012e | 11826 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11827 | const struct bp_target_info left_target_info = left->target_info; |
11828 | ||
1e4d1764 YQ |
11829 | /* Locations of tracepoints can never be duplicated. */ |
11830 | if (is_tracepoint (left->owner)) | |
11831 | gdb_assert (!left->duplicate); | |
11832 | if (is_tracepoint (right->owner)) | |
11833 | gdb_assert (!right->duplicate); | |
11834 | ||
934709f0 PW |
11835 | left->inserted = right->inserted; |
11836 | left->duplicate = right->duplicate; | |
b775012e | 11837 | left->needs_update = right->needs_update; |
934709f0 PW |
11838 | left->target_info = right->target_info; |
11839 | right->inserted = left_inserted; | |
11840 | right->duplicate = left_duplicate; | |
b775012e | 11841 | right->needs_update = left_needs_update; |
934709f0 PW |
11842 | right->target_info = left_target_info; |
11843 | } | |
11844 | ||
b775012e LM |
11845 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11846 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11847 | conditions on the target's side. Such conditions need to be updated on | |
11848 | the target. */ | |
11849 | ||
11850 | static void | |
11851 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11852 | { | |
11853 | struct bp_location **locp = NULL, **loc2p; | |
11854 | struct bp_location *loc; | |
11855 | CORE_ADDR address = 0; | |
11856 | int pspace_num; | |
11857 | ||
11858 | address = bl->address; | |
11859 | pspace_num = bl->pspace->num; | |
11860 | ||
11861 | /* This is only meaningful if the target is | |
11862 | evaluating conditions and if the user has | |
11863 | opted for condition evaluation on the target's | |
11864 | side. */ | |
11865 | if (gdb_evaluates_breakpoint_condition_p () | |
11866 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11867 | return; | |
11868 | ||
11869 | /* Flag all breakpoint locations with this address and | |
11870 | the same program space as the location | |
11871 | as "its condition has changed". We need to | |
11872 | update the conditions on the target's side. */ | |
11873 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11874 | { | |
11875 | loc = *loc2p; | |
11876 | ||
11877 | if (!is_breakpoint (loc->owner) | |
11878 | || pspace_num != loc->pspace->num) | |
11879 | continue; | |
11880 | ||
11881 | /* Flag the location appropriately. We use a different state to | |
11882 | let everyone know that we already updated the set of locations | |
11883 | with addr bl->address and program space bl->pspace. This is so | |
11884 | we don't have to keep calling these functions just to mark locations | |
11885 | that have already been marked. */ | |
11886 | loc->condition_changed = condition_updated; | |
11887 | ||
11888 | /* Free the agent expression bytecode as well. We will compute | |
11889 | it later on. */ | |
833177a4 | 11890 | loc->cond_bytecode.reset (); |
b775012e LM |
11891 | } |
11892 | } | |
44702360 PA |
11893 | /* Called whether new breakpoints are created, or existing breakpoints |
11894 | deleted, to update the global location list and recompute which | |
11895 | locations are duplicate of which. | |
b775012e | 11896 | |
04086b45 PA |
11897 | The INSERT_MODE flag determines whether locations may not, may, or |
11898 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11899 | info. */ | |
b60e7edf | 11900 | |
0d381245 | 11901 | static void |
44702360 | 11902 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11903 | { |
74960c60 | 11904 | struct breakpoint *b; |
876fa593 | 11905 | struct bp_location **locp, *loc; |
b775012e LM |
11906 | /* Last breakpoint location address that was marked for update. */ |
11907 | CORE_ADDR last_addr = 0; | |
11908 | /* Last breakpoint location program space that was marked for update. */ | |
11909 | int last_pspace_num = -1; | |
f7545552 | 11910 | |
2d134ed3 PA |
11911 | /* Used in the duplicates detection below. When iterating over all |
11912 | bp_locations, points to the first bp_location of a given address. | |
11913 | Breakpoints and watchpoints of different types are never | |
11914 | duplicates of each other. Keep one pointer for each type of | |
11915 | breakpoint/watchpoint, so we only need to loop over all locations | |
11916 | once. */ | |
11917 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11918 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11919 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11920 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11921 | |
f5336ca5 PA |
11922 | /* Saved former bp_locations array which we compare against the newly |
11923 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11924 | struct bp_location **old_locp; |
f5336ca5 | 11925 | unsigned old_locations_count; |
81b1e71c | 11926 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11927 | |
f5336ca5 PA |
11928 | old_locations_count = bp_locations_count; |
11929 | bp_locations = NULL; | |
11930 | bp_locations_count = 0; | |
0d381245 | 11931 | |
74960c60 | 11932 | ALL_BREAKPOINTS (b) |
876fa593 | 11933 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11934 | bp_locations_count++; |
876fa593 | 11935 | |
f5336ca5 PA |
11936 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11937 | locp = bp_locations; | |
876fa593 JK |
11938 | ALL_BREAKPOINTS (b) |
11939 | for (loc = b->loc; loc; loc = loc->next) | |
11940 | *locp++ = loc; | |
f5336ca5 PA |
11941 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11942 | bp_locations_compare); | |
876fa593 | 11943 | |
f5336ca5 | 11944 | bp_locations_target_extensions_update (); |
74960c60 | 11945 | |
4a64f543 MS |
11946 | /* Identify bp_location instances that are no longer present in the |
11947 | new list, and therefore should be freed. Note that it's not | |
11948 | necessary that those locations should be removed from inferior -- | |
11949 | if there's another location at the same address (previously | |
11950 | marked as duplicate), we don't need to remove/insert the | |
11951 | location. | |
876fa593 | 11952 | |
4a64f543 MS |
11953 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11954 | and former bp_location array state respectively. */ | |
876fa593 | 11955 | |
f5336ca5 | 11956 | locp = bp_locations; |
81b1e71c TT |
11957 | for (old_locp = old_locations.get (); |
11958 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11959 | old_locp++) |
74960c60 | 11960 | { |
876fa593 | 11961 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11962 | struct bp_location **loc2p; |
876fa593 | 11963 | |
e5dd4106 | 11964 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11965 | not, we have to free it. */ |
c7d46a38 | 11966 | int found_object = 0; |
20874c92 VP |
11967 | /* Tells if the location should remain inserted in the target. */ |
11968 | int keep_in_target = 0; | |
11969 | int removed = 0; | |
876fa593 | 11970 | |
4a64f543 MS |
11971 | /* Skip LOCP entries which will definitely never be needed. |
11972 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11973 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11974 | && (*locp)->address < old_loc->address) |
876fa593 | 11975 | locp++; |
c7d46a38 PA |
11976 | |
11977 | for (loc2p = locp; | |
f5336ca5 | 11978 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11979 | && (*loc2p)->address == old_loc->address); |
11980 | loc2p++) | |
11981 | { | |
b775012e LM |
11982 | /* Check if this is a new/duplicated location or a duplicated |
11983 | location that had its condition modified. If so, we want to send | |
11984 | its condition to the target if evaluation of conditions is taking | |
11985 | place there. */ | |
11986 | if ((*loc2p)->condition_changed == condition_modified | |
11987 | && (last_addr != old_loc->address | |
11988 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11989 | { |
b775012e LM |
11990 | force_breakpoint_reinsertion (*loc2p); |
11991 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11992 | } |
b775012e LM |
11993 | |
11994 | if (*loc2p == old_loc) | |
11995 | found_object = 1; | |
c7d46a38 | 11996 | } |
74960c60 | 11997 | |
b775012e LM |
11998 | /* We have already handled this address, update it so that we don't |
11999 | have to go through updates again. */ | |
12000 | last_addr = old_loc->address; | |
12001 | ||
12002 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12003 | if (!found_object) | |
12004 | force_breakpoint_reinsertion (old_loc); | |
12005 | ||
4a64f543 MS |
12006 | /* If this location is no longer present, and inserted, look if |
12007 | there's maybe a new location at the same address. If so, | |
12008 | mark that one inserted, and don't remove this one. This is | |
12009 | needed so that we don't have a time window where a breakpoint | |
12010 | at certain location is not inserted. */ | |
74960c60 | 12011 | |
876fa593 | 12012 | if (old_loc->inserted) |
0d381245 | 12013 | { |
4a64f543 MS |
12014 | /* If the location is inserted now, we might have to remove |
12015 | it. */ | |
74960c60 | 12016 | |
876fa593 | 12017 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12018 | { |
4a64f543 MS |
12019 | /* The location is still present in the location list, |
12020 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12021 | keep_in_target = 1; |
74960c60 VP |
12022 | } |
12023 | else | |
12024 | { | |
b775012e LM |
12025 | /* This location still exists, but it won't be kept in the |
12026 | target since it may have been disabled. We proceed to | |
12027 | remove its target-side condition. */ | |
12028 | ||
4a64f543 MS |
12029 | /* The location is either no longer present, or got |
12030 | disabled. See if there's another location at the | |
12031 | same address, in which case we don't need to remove | |
12032 | this one from the target. */ | |
876fa593 | 12033 | |
2bdf28a0 | 12034 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12035 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12036 | { | |
876fa593 | 12037 | for (loc2p = locp; |
f5336ca5 | 12038 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 12039 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
12040 | loc2p++) |
12041 | { | |
12042 | struct bp_location *loc2 = *loc2p; | |
12043 | ||
2d134ed3 | 12044 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12045 | { |
85d721b8 PA |
12046 | /* Read watchpoint locations are switched to |
12047 | access watchpoints, if the former are not | |
12048 | supported, but the latter are. */ | |
12049 | if (is_hardware_watchpoint (old_loc->owner)) | |
12050 | { | |
12051 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12052 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12053 | } | |
12054 | ||
934709f0 PW |
12055 | /* loc2 is a duplicated location. We need to check |
12056 | if it should be inserted in case it will be | |
12057 | unduplicated. */ | |
12058 | if (loc2 != old_loc | |
12059 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12060 | { |
934709f0 | 12061 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12062 | keep_in_target = 1; |
12063 | break; | |
12064 | } | |
876fa593 JK |
12065 | } |
12066 | } | |
12067 | } | |
74960c60 VP |
12068 | } |
12069 | ||
20874c92 VP |
12070 | if (!keep_in_target) |
12071 | { | |
834c0d03 | 12072 | if (remove_breakpoint (old_loc)) |
20874c92 | 12073 | { |
4a64f543 MS |
12074 | /* This is just about all we can do. We could keep |
12075 | this location on the global list, and try to | |
12076 | remove it next time, but there's no particular | |
12077 | reason why we will succeed next time. | |
20874c92 | 12078 | |
4a64f543 MS |
12079 | Note that at this point, old_loc->owner is still |
12080 | valid, as delete_breakpoint frees the breakpoint | |
12081 | only after calling us. */ | |
3e43a32a MS |
12082 | printf_filtered (_("warning: Error removing " |
12083 | "breakpoint %d\n"), | |
876fa593 | 12084 | old_loc->owner->number); |
20874c92 VP |
12085 | } |
12086 | removed = 1; | |
12087 | } | |
0d381245 | 12088 | } |
74960c60 VP |
12089 | |
12090 | if (!found_object) | |
1c5cfe86 | 12091 | { |
fbea99ea | 12092 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12093 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12094 | { |
db82e815 PA |
12095 | /* This location was removed from the target. In |
12096 | non-stop mode, a race condition is possible where | |
12097 | we've removed a breakpoint, but stop events for that | |
12098 | breakpoint are already queued and will arrive later. | |
12099 | We apply an heuristic to be able to distinguish such | |
12100 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12101 | breakpoint location for a bit, and will retire it | |
12102 | after we see some number of events. The theory here | |
12103 | is that reporting of events should, "on the average", | |
12104 | be fair, so after a while we'll see events from all | |
12105 | threads that have anything of interest, and no longer | |
12106 | need to keep this breakpoint location around. We | |
12107 | don't hold locations forever so to reduce chances of | |
12108 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12109 | SIGTRAP. | |
12110 | ||
12111 | The heuristic failing can be disastrous on | |
12112 | decr_pc_after_break targets. | |
12113 | ||
12114 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12115 | if we fail to recognize a late breakpoint SIGTRAP, | |
12116 | because events_till_retirement has reached 0 too | |
12117 | soon, we'll fail to do the PC adjustment, and report | |
12118 | a random SIGTRAP to the user. When the user resumes | |
12119 | the inferior, it will most likely immediately crash | |
2dec564e | 12120 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12121 | corrupted, because of being resumed e.g., in the |
12122 | middle of a multi-byte instruction, or skipped a | |
12123 | one-byte instruction. This was actually seen happen | |
12124 | on native x86-linux, and should be less rare on | |
12125 | targets that do not support new thread events, like | |
12126 | remote, due to the heuristic depending on | |
12127 | thread_count. | |
12128 | ||
12129 | Mistaking a random SIGTRAP for a breakpoint trap | |
12130 | causes similar symptoms (PC adjustment applied when | |
12131 | it shouldn't), but then again, playing with SIGTRAPs | |
12132 | behind the debugger's back is asking for trouble. | |
12133 | ||
12134 | Since hardware watchpoint traps are always | |
12135 | distinguishable from other traps, so we don't need to | |
12136 | apply keep hardware watchpoint moribund locations | |
12137 | around. We simply always ignore hardware watchpoint | |
12138 | traps we can no longer explain. */ | |
12139 | ||
876fa593 JK |
12140 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12141 | old_loc->owner = NULL; | |
20874c92 | 12142 | |
876fa593 | 12143 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12144 | } |
12145 | else | |
f431efe5 PA |
12146 | { |
12147 | old_loc->owner = NULL; | |
12148 | decref_bp_location (&old_loc); | |
12149 | } | |
20874c92 | 12150 | } |
74960c60 | 12151 | } |
1c5cfe86 | 12152 | |
348d480f PA |
12153 | /* Rescan breakpoints at the same address and section, marking the |
12154 | first one as "first" and any others as "duplicates". This is so | |
12155 | that the bpt instruction is only inserted once. If we have a | |
12156 | permanent breakpoint at the same place as BPT, make that one the | |
12157 | official one, and the rest as duplicates. Permanent breakpoints | |
12158 | are sorted first for the same address. | |
12159 | ||
12160 | Do the same for hardware watchpoints, but also considering the | |
12161 | watchpoint's type (regular/access/read) and length. */ | |
12162 | ||
12163 | bp_loc_first = NULL; | |
12164 | wp_loc_first = NULL; | |
12165 | awp_loc_first = NULL; | |
12166 | rwp_loc_first = NULL; | |
12167 | ALL_BP_LOCATIONS (loc, locp) | |
12168 | { | |
12169 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12170 | non-NULL. */ | |
348d480f | 12171 | struct bp_location **loc_first_p; |
d3fbdd86 | 12172 | b = loc->owner; |
348d480f | 12173 | |
6f380991 | 12174 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12175 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12176 | /* Don't detect duplicate for tracepoint locations because they are |
12177 | never duplicated. See the comments in field `duplicate' of | |
12178 | `struct bp_location'. */ | |
348d480f | 12179 | || is_tracepoint (b)) |
b775012e LM |
12180 | { |
12181 | /* Clear the condition modification flag. */ | |
12182 | loc->condition_changed = condition_unchanged; | |
12183 | continue; | |
12184 | } | |
348d480f | 12185 | |
348d480f PA |
12186 | if (b->type == bp_hardware_watchpoint) |
12187 | loc_first_p = &wp_loc_first; | |
12188 | else if (b->type == bp_read_watchpoint) | |
12189 | loc_first_p = &rwp_loc_first; | |
12190 | else if (b->type == bp_access_watchpoint) | |
12191 | loc_first_p = &awp_loc_first; | |
12192 | else | |
12193 | loc_first_p = &bp_loc_first; | |
12194 | ||
12195 | if (*loc_first_p == NULL | |
12196 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12197 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12198 | { | |
12199 | *loc_first_p = loc; | |
12200 | loc->duplicate = 0; | |
b775012e LM |
12201 | |
12202 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12203 | { | |
12204 | loc->needs_update = 1; | |
12205 | /* Clear the condition modification flag. */ | |
12206 | loc->condition_changed = condition_unchanged; | |
12207 | } | |
348d480f PA |
12208 | continue; |
12209 | } | |
12210 | ||
934709f0 PW |
12211 | |
12212 | /* This and the above ensure the invariant that the first location | |
12213 | is not duplicated, and is the inserted one. | |
12214 | All following are marked as duplicated, and are not inserted. */ | |
12215 | if (loc->inserted) | |
12216 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12217 | loc->duplicate = 1; |
12218 | ||
b775012e LM |
12219 | /* Clear the condition modification flag. */ |
12220 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12221 | } |
12222 | ||
a25a5a45 | 12223 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12224 | { |
04086b45 | 12225 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12226 | insert_breakpoint_locations (); |
12227 | else | |
12228 | { | |
44702360 PA |
12229 | /* Even though the caller told us to not insert new |
12230 | locations, we may still need to update conditions on the | |
12231 | target's side of breakpoints that were already inserted | |
12232 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12233 | only update conditions for locations that are marked |
12234 | "needs_update". */ | |
12235 | update_inserted_breakpoint_locations (); | |
12236 | } | |
12237 | } | |
348d480f | 12238 | |
04086b45 | 12239 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12240 | download_tracepoint_locations (); |
348d480f PA |
12241 | } |
12242 | ||
12243 | void | |
12244 | breakpoint_retire_moribund (void) | |
12245 | { | |
12246 | struct bp_location *loc; | |
12247 | int ix; | |
12248 | ||
12249 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12250 | if (--(loc->events_till_retirement) == 0) | |
12251 | { | |
12252 | decref_bp_location (&loc); | |
12253 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12254 | --ix; | |
12255 | } | |
12256 | } | |
12257 | ||
12258 | static void | |
44702360 | 12259 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12260 | { |
348d480f | 12261 | |
492d29ea PA |
12262 | TRY |
12263 | { | |
12264 | update_global_location_list (insert_mode); | |
12265 | } | |
12266 | CATCH (e, RETURN_MASK_ERROR) | |
12267 | { | |
12268 | } | |
12269 | END_CATCH | |
348d480f PA |
12270 | } |
12271 | ||
12272 | /* Clear BKP from a BPS. */ | |
12273 | ||
12274 | static void | |
12275 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12276 | { | |
12277 | bpstat bs; | |
12278 | ||
12279 | for (bs = bps; bs; bs = bs->next) | |
12280 | if (bs->breakpoint_at == bpt) | |
12281 | { | |
12282 | bs->breakpoint_at = NULL; | |
12283 | bs->old_val = NULL; | |
12284 | /* bs->commands will be freed later. */ | |
12285 | } | |
12286 | } | |
12287 | ||
12288 | /* Callback for iterate_over_threads. */ | |
12289 | static int | |
12290 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12291 | { | |
9a3c8263 | 12292 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12293 | |
12294 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12295 | return 0; | |
12296 | } | |
12297 | ||
12298 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12299 | callbacks. */ | |
12300 | ||
12301 | static void | |
12302 | say_where (struct breakpoint *b) | |
12303 | { | |
12304 | struct value_print_options opts; | |
12305 | ||
12306 | get_user_print_options (&opts); | |
12307 | ||
12308 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12309 | single string. */ | |
12310 | if (b->loc == NULL) | |
12311 | { | |
f00aae0f KS |
12312 | /* For pending locations, the output differs slightly based |
12313 | on b->extra_string. If this is non-NULL, it contains either | |
12314 | a condition or dprintf arguments. */ | |
12315 | if (b->extra_string == NULL) | |
12316 | { | |
12317 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12318 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12319 | } |
12320 | else if (b->type == bp_dprintf) | |
12321 | { | |
12322 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12323 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12324 | b->extra_string); |
12325 | } | |
12326 | else | |
12327 | { | |
12328 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12329 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12330 | b->extra_string); |
12331 | } | |
348d480f PA |
12332 | } |
12333 | else | |
12334 | { | |
2f202fde | 12335 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12336 | { |
12337 | printf_filtered (" at "); | |
12338 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12339 | gdb_stdout); | |
12340 | } | |
2f202fde | 12341 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12342 | { |
12343 | /* If there is a single location, we can print the location | |
12344 | more nicely. */ | |
12345 | if (b->loc->next == NULL) | |
12346 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12347 | symtab_to_filename_for_display (b->loc->symtab), |
12348 | b->loc->line_number); | |
f8eba3c6 TT |
12349 | else |
12350 | /* This is not ideal, but each location may have a | |
12351 | different file name, and this at least reflects the | |
12352 | real situation somewhat. */ | |
f00aae0f | 12353 | printf_filtered (": %s.", |
d28cd78a | 12354 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12355 | } |
348d480f PA |
12356 | |
12357 | if (b->loc->next) | |
12358 | { | |
12359 | struct bp_location *loc = b->loc; | |
12360 | int n = 0; | |
12361 | for (; loc; loc = loc->next) | |
12362 | ++n; | |
12363 | printf_filtered (" (%d locations)", n); | |
12364 | } | |
12365 | } | |
12366 | } | |
12367 | ||
348d480f PA |
12368 | /* Default bp_location_ops methods. */ |
12369 | ||
12370 | static void | |
12371 | bp_location_dtor (struct bp_location *self) | |
12372 | { | |
348d480f PA |
12373 | xfree (self->function_name); |
12374 | } | |
12375 | ||
12376 | static const struct bp_location_ops bp_location_ops = | |
12377 | { | |
12378 | bp_location_dtor | |
12379 | }; | |
12380 | ||
c1fc2657 | 12381 | /* Destructor for the breakpoint base class. */ |
348d480f | 12382 | |
c1fc2657 | 12383 | breakpoint::~breakpoint () |
348d480f | 12384 | { |
c1fc2657 SM |
12385 | xfree (this->cond_string); |
12386 | xfree (this->extra_string); | |
12387 | xfree (this->filter); | |
348d480f PA |
12388 | } |
12389 | ||
2060206e PA |
12390 | static struct bp_location * |
12391 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12392 | { |
5625a286 | 12393 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12394 | } |
12395 | ||
2060206e PA |
12396 | static void |
12397 | base_breakpoint_re_set (struct breakpoint *b) | |
12398 | { | |
12399 | /* Nothing to re-set. */ | |
12400 | } | |
12401 | ||
12402 | #define internal_error_pure_virtual_called() \ | |
12403 | gdb_assert_not_reached ("pure virtual function called") | |
12404 | ||
12405 | static int | |
12406 | base_breakpoint_insert_location (struct bp_location *bl) | |
12407 | { | |
12408 | internal_error_pure_virtual_called (); | |
12409 | } | |
12410 | ||
12411 | static int | |
73971819 PA |
12412 | base_breakpoint_remove_location (struct bp_location *bl, |
12413 | enum remove_bp_reason reason) | |
2060206e PA |
12414 | { |
12415 | internal_error_pure_virtual_called (); | |
12416 | } | |
12417 | ||
12418 | static int | |
12419 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12420 | const address_space *aspace, |
09ac7c10 TT |
12421 | CORE_ADDR bp_addr, |
12422 | const struct target_waitstatus *ws) | |
2060206e PA |
12423 | { |
12424 | internal_error_pure_virtual_called (); | |
12425 | } | |
12426 | ||
12427 | static void | |
12428 | base_breakpoint_check_status (bpstat bs) | |
12429 | { | |
12430 | /* Always stop. */ | |
12431 | } | |
12432 | ||
12433 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12434 | errors. */ | |
12435 | ||
12436 | static int | |
12437 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12438 | { | |
12439 | internal_error_pure_virtual_called (); | |
12440 | } | |
12441 | ||
12442 | /* A "resources_needed" breakpoint_ops method that just internal | |
12443 | errors. */ | |
12444 | ||
12445 | static int | |
12446 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12447 | { | |
12448 | internal_error_pure_virtual_called (); | |
12449 | } | |
12450 | ||
12451 | static enum print_stop_action | |
12452 | base_breakpoint_print_it (bpstat bs) | |
12453 | { | |
12454 | internal_error_pure_virtual_called (); | |
12455 | } | |
12456 | ||
12457 | static void | |
12458 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12459 | struct ui_out *uiout) | |
12460 | { | |
12461 | /* nothing */ | |
12462 | } | |
12463 | ||
12464 | static void | |
12465 | base_breakpoint_print_mention (struct breakpoint *b) | |
12466 | { | |
12467 | internal_error_pure_virtual_called (); | |
12468 | } | |
12469 | ||
12470 | static void | |
12471 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12472 | { | |
12473 | internal_error_pure_virtual_called (); | |
12474 | } | |
12475 | ||
983af33b | 12476 | static void |
f00aae0f KS |
12477 | base_breakpoint_create_sals_from_location |
12478 | (const struct event_location *location, | |
12479 | struct linespec_result *canonical, | |
12480 | enum bptype type_wanted) | |
983af33b SDJ |
12481 | { |
12482 | internal_error_pure_virtual_called (); | |
12483 | } | |
12484 | ||
12485 | static void | |
12486 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12487 | struct linespec_result *c, | |
e1e01040 PA |
12488 | gdb::unique_xmalloc_ptr<char> cond_string, |
12489 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12490 | enum bptype type_wanted, |
12491 | enum bpdisp disposition, | |
12492 | int thread, | |
12493 | int task, int ignore_count, | |
12494 | const struct breakpoint_ops *o, | |
12495 | int from_tty, int enabled, | |
44f238bb | 12496 | int internal, unsigned flags) |
983af33b SDJ |
12497 | { |
12498 | internal_error_pure_virtual_called (); | |
12499 | } | |
12500 | ||
6c5b2ebe | 12501 | static std::vector<symtab_and_line> |
f00aae0f KS |
12502 | base_breakpoint_decode_location (struct breakpoint *b, |
12503 | const struct event_location *location, | |
6c5b2ebe | 12504 | struct program_space *search_pspace) |
983af33b SDJ |
12505 | { |
12506 | internal_error_pure_virtual_called (); | |
12507 | } | |
12508 | ||
ab04a2af TT |
12509 | /* The default 'explains_signal' method. */ |
12510 | ||
47591c29 | 12511 | static int |
427cd150 | 12512 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12513 | { |
47591c29 | 12514 | return 1; |
ab04a2af TT |
12515 | } |
12516 | ||
9d6e6e84 HZ |
12517 | /* The default "after_condition_true" method. */ |
12518 | ||
12519 | static void | |
12520 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12521 | { | |
12522 | /* Nothing to do. */ | |
12523 | } | |
12524 | ||
ab04a2af | 12525 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12526 | { |
2060206e PA |
12527 | base_breakpoint_allocate_location, |
12528 | base_breakpoint_re_set, | |
12529 | base_breakpoint_insert_location, | |
12530 | base_breakpoint_remove_location, | |
12531 | base_breakpoint_breakpoint_hit, | |
12532 | base_breakpoint_check_status, | |
12533 | base_breakpoint_resources_needed, | |
12534 | base_breakpoint_works_in_software_mode, | |
12535 | base_breakpoint_print_it, | |
12536 | NULL, | |
12537 | base_breakpoint_print_one_detail, | |
12538 | base_breakpoint_print_mention, | |
983af33b | 12539 | base_breakpoint_print_recreate, |
5f700d83 | 12540 | base_breakpoint_create_sals_from_location, |
983af33b | 12541 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12542 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12543 | base_breakpoint_explains_signal, |
12544 | base_breakpoint_after_condition_true, | |
2060206e PA |
12545 | }; |
12546 | ||
12547 | /* Default breakpoint_ops methods. */ | |
12548 | ||
12549 | static void | |
348d480f PA |
12550 | bkpt_re_set (struct breakpoint *b) |
12551 | { | |
06edf0c0 | 12552 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12553 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12554 | { |
f00aae0f | 12555 | /* Anything without a location can't be re-set. */ |
348d480f | 12556 | delete_breakpoint (b); |
06edf0c0 | 12557 | return; |
348d480f | 12558 | } |
06edf0c0 PA |
12559 | |
12560 | breakpoint_re_set_default (b); | |
348d480f PA |
12561 | } |
12562 | ||
2060206e | 12563 | static int |
348d480f PA |
12564 | bkpt_insert_location (struct bp_location *bl) |
12565 | { | |
cd6c3b4f YQ |
12566 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12567 | ||
579c6ad9 | 12568 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12569 | bl->target_info.placed_address = addr; |
12570 | ||
348d480f | 12571 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12572 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12573 | else |
7c16b83e | 12574 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12575 | } |
12576 | ||
2060206e | 12577 | static int |
73971819 | 12578 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12579 | { |
12580 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12581 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12582 | else | |
73971819 | 12583 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12584 | } |
12585 | ||
2060206e | 12586 | static int |
348d480f | 12587 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12588 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12589 | const struct target_waitstatus *ws) |
348d480f | 12590 | { |
09ac7c10 | 12591 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12592 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12593 | return 0; |
12594 | ||
348d480f PA |
12595 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12596 | aspace, bp_addr)) | |
12597 | return 0; | |
12598 | ||
12599 | if (overlay_debugging /* unmapped overlay section */ | |
12600 | && section_is_overlay (bl->section) | |
12601 | && !section_is_mapped (bl->section)) | |
12602 | return 0; | |
12603 | ||
12604 | return 1; | |
12605 | } | |
12606 | ||
cd1608cc PA |
12607 | static int |
12608 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12609 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12610 | const struct target_waitstatus *ws) |
12611 | { | |
12612 | if (dprintf_style == dprintf_style_agent | |
12613 | && target_can_run_breakpoint_commands ()) | |
12614 | { | |
12615 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12616 | for this address it must be for a breakpoint that happens to | |
12617 | be set at the same address. */ | |
12618 | return 0; | |
12619 | } | |
12620 | ||
12621 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12622 | } | |
12623 | ||
2060206e | 12624 | static int |
348d480f PA |
12625 | bkpt_resources_needed (const struct bp_location *bl) |
12626 | { | |
12627 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12628 | ||
12629 | return 1; | |
12630 | } | |
12631 | ||
2060206e | 12632 | static enum print_stop_action |
348d480f PA |
12633 | bkpt_print_it (bpstat bs) |
12634 | { | |
348d480f PA |
12635 | struct breakpoint *b; |
12636 | const struct bp_location *bl; | |
001c8c33 | 12637 | int bp_temp; |
79a45e25 | 12638 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12639 | |
12640 | gdb_assert (bs->bp_location_at != NULL); | |
12641 | ||
12642 | bl = bs->bp_location_at; | |
12643 | b = bs->breakpoint_at; | |
12644 | ||
001c8c33 PA |
12645 | bp_temp = b->disposition == disp_del; |
12646 | if (bl->address != bl->requested_address) | |
12647 | breakpoint_adjustment_warning (bl->requested_address, | |
12648 | bl->address, | |
12649 | b->number, 1); | |
12650 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12651 | maybe_print_thread_hit_breakpoint (uiout); |
12652 | ||
001c8c33 | 12653 | if (bp_temp) |
112e8700 | 12654 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12655 | else |
112e8700 SM |
12656 | uiout->text ("Breakpoint "); |
12657 | if (uiout->is_mi_like_p ()) | |
348d480f | 12658 | { |
112e8700 | 12659 | uiout->field_string ("reason", |
001c8c33 | 12660 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12661 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12662 | } |
112e8700 SM |
12663 | uiout->field_int ("bkptno", b->number); |
12664 | uiout->text (", "); | |
06edf0c0 | 12665 | |
001c8c33 | 12666 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12667 | } |
12668 | ||
2060206e | 12669 | static void |
06edf0c0 PA |
12670 | bkpt_print_mention (struct breakpoint *b) |
12671 | { | |
112e8700 | 12672 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12673 | return; |
12674 | ||
12675 | switch (b->type) | |
12676 | { | |
12677 | case bp_breakpoint: | |
12678 | case bp_gnu_ifunc_resolver: | |
12679 | if (b->disposition == disp_del) | |
12680 | printf_filtered (_("Temporary breakpoint")); | |
12681 | else | |
12682 | printf_filtered (_("Breakpoint")); | |
12683 | printf_filtered (_(" %d"), b->number); | |
12684 | if (b->type == bp_gnu_ifunc_resolver) | |
12685 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12686 | break; | |
12687 | case bp_hardware_breakpoint: | |
12688 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12689 | break; | |
e7e0cddf SS |
12690 | case bp_dprintf: |
12691 | printf_filtered (_("Dprintf %d"), b->number); | |
12692 | break; | |
06edf0c0 PA |
12693 | } |
12694 | ||
12695 | say_where (b); | |
12696 | } | |
12697 | ||
2060206e | 12698 | static void |
06edf0c0 PA |
12699 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12700 | { | |
12701 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12702 | fprintf_unfiltered (fp, "tbreak"); | |
12703 | else if (tp->type == bp_breakpoint) | |
12704 | fprintf_unfiltered (fp, "break"); | |
12705 | else if (tp->type == bp_hardware_breakpoint | |
12706 | && tp->disposition == disp_del) | |
12707 | fprintf_unfiltered (fp, "thbreak"); | |
12708 | else if (tp->type == bp_hardware_breakpoint) | |
12709 | fprintf_unfiltered (fp, "hbreak"); | |
12710 | else | |
12711 | internal_error (__FILE__, __LINE__, | |
12712 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12713 | ||
f00aae0f | 12714 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12715 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12716 | |
12717 | /* Print out extra_string if this breakpoint is pending. It might | |
12718 | contain, for example, conditions that were set by the user. */ | |
12719 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12720 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12721 | ||
dd11a36c | 12722 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12723 | } |
12724 | ||
983af33b | 12725 | static void |
f00aae0f KS |
12726 | bkpt_create_sals_from_location (const struct event_location *location, |
12727 | struct linespec_result *canonical, | |
12728 | enum bptype type_wanted) | |
983af33b | 12729 | { |
f00aae0f | 12730 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12731 | } |
12732 | ||
12733 | static void | |
12734 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12735 | struct linespec_result *canonical, | |
e1e01040 PA |
12736 | gdb::unique_xmalloc_ptr<char> cond_string, |
12737 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12738 | enum bptype type_wanted, |
12739 | enum bpdisp disposition, | |
12740 | int thread, | |
12741 | int task, int ignore_count, | |
12742 | const struct breakpoint_ops *ops, | |
12743 | int from_tty, int enabled, | |
44f238bb | 12744 | int internal, unsigned flags) |
983af33b | 12745 | { |
023fa29b | 12746 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12747 | std::move (cond_string), |
12748 | std::move (extra_string), | |
e7e0cddf | 12749 | type_wanted, |
983af33b SDJ |
12750 | disposition, thread, task, |
12751 | ignore_count, ops, from_tty, | |
44f238bb | 12752 | enabled, internal, flags); |
983af33b SDJ |
12753 | } |
12754 | ||
6c5b2ebe | 12755 | static std::vector<symtab_and_line> |
f00aae0f KS |
12756 | bkpt_decode_location (struct breakpoint *b, |
12757 | const struct event_location *location, | |
6c5b2ebe | 12758 | struct program_space *search_pspace) |
983af33b | 12759 | { |
6c5b2ebe | 12760 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12761 | } |
12762 | ||
06edf0c0 PA |
12763 | /* Virtual table for internal breakpoints. */ |
12764 | ||
12765 | static void | |
12766 | internal_bkpt_re_set (struct breakpoint *b) | |
12767 | { | |
12768 | switch (b->type) | |
12769 | { | |
12770 | /* Delete overlay event and longjmp master breakpoints; they | |
12771 | will be reset later by breakpoint_re_set. */ | |
12772 | case bp_overlay_event: | |
12773 | case bp_longjmp_master: | |
12774 | case bp_std_terminate_master: | |
12775 | case bp_exception_master: | |
12776 | delete_breakpoint (b); | |
12777 | break; | |
12778 | ||
12779 | /* This breakpoint is special, it's set up when the inferior | |
12780 | starts and we really don't want to touch it. */ | |
12781 | case bp_shlib_event: | |
12782 | ||
12783 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12784 | it is set up, we do not want to touch it. */ | |
12785 | case bp_thread_event: | |
12786 | break; | |
12787 | } | |
12788 | } | |
12789 | ||
12790 | static void | |
12791 | internal_bkpt_check_status (bpstat bs) | |
12792 | { | |
a9b3a50f PA |
12793 | if (bs->breakpoint_at->type == bp_shlib_event) |
12794 | { | |
12795 | /* If requested, stop when the dynamic linker notifies GDB of | |
12796 | events. This allows the user to get control and place | |
12797 | breakpoints in initializer routines for dynamically loaded | |
12798 | objects (among other things). */ | |
12799 | bs->stop = stop_on_solib_events; | |
12800 | bs->print = stop_on_solib_events; | |
12801 | } | |
12802 | else | |
12803 | bs->stop = 0; | |
06edf0c0 PA |
12804 | } |
12805 | ||
12806 | static enum print_stop_action | |
12807 | internal_bkpt_print_it (bpstat bs) | |
12808 | { | |
06edf0c0 | 12809 | struct breakpoint *b; |
06edf0c0 | 12810 | |
06edf0c0 PA |
12811 | b = bs->breakpoint_at; |
12812 | ||
06edf0c0 PA |
12813 | switch (b->type) |
12814 | { | |
348d480f PA |
12815 | case bp_shlib_event: |
12816 | /* Did we stop because the user set the stop_on_solib_events | |
12817 | variable? (If so, we report this as a generic, "Stopped due | |
12818 | to shlib event" message.) */ | |
edcc5120 | 12819 | print_solib_event (0); |
348d480f PA |
12820 | break; |
12821 | ||
12822 | case bp_thread_event: | |
12823 | /* Not sure how we will get here. | |
12824 | GDB should not stop for these breakpoints. */ | |
12825 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12826 | break; |
12827 | ||
12828 | case bp_overlay_event: | |
12829 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12830 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12831 | break; |
12832 | ||
12833 | case bp_longjmp_master: | |
12834 | /* These should never be enabled. */ | |
12835 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12836 | break; |
12837 | ||
12838 | case bp_std_terminate_master: | |
12839 | /* These should never be enabled. */ | |
12840 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12841 | "gdb should not stop!\n")); | |
348d480f PA |
12842 | break; |
12843 | ||
12844 | case bp_exception_master: | |
12845 | /* These should never be enabled. */ | |
12846 | printf_filtered (_("Exception Master Breakpoint: " | |
12847 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12848 | break; |
12849 | } | |
12850 | ||
001c8c33 | 12851 | return PRINT_NOTHING; |
06edf0c0 PA |
12852 | } |
12853 | ||
12854 | static void | |
12855 | internal_bkpt_print_mention (struct breakpoint *b) | |
12856 | { | |
12857 | /* Nothing to mention. These breakpoints are internal. */ | |
12858 | } | |
12859 | ||
06edf0c0 PA |
12860 | /* Virtual table for momentary breakpoints */ |
12861 | ||
12862 | static void | |
12863 | momentary_bkpt_re_set (struct breakpoint *b) | |
12864 | { | |
12865 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12866 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12867 | Otherwise these should have been blown away via the cleanup chain |
12868 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12869 | } | |
12870 | ||
12871 | static void | |
12872 | momentary_bkpt_check_status (bpstat bs) | |
12873 | { | |
12874 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12875 | } | |
12876 | ||
12877 | static enum print_stop_action | |
12878 | momentary_bkpt_print_it (bpstat bs) | |
12879 | { | |
001c8c33 | 12880 | return PRINT_UNKNOWN; |
348d480f PA |
12881 | } |
12882 | ||
06edf0c0 PA |
12883 | static void |
12884 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12885 | { |
06edf0c0 | 12886 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12887 | } |
12888 | ||
e2e4d78b JK |
12889 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12890 | ||
12891 | It gets cleared already on the removal of the first one of such placed | |
12892 | breakpoints. This is OK as they get all removed altogether. */ | |
12893 | ||
c1fc2657 | 12894 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12895 | { |
c1fc2657 | 12896 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12897 | |
c1fc2657 | 12898 | if (tp != NULL) |
e2e4d78b | 12899 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12900 | } |
12901 | ||
55aa24fb SDJ |
12902 | /* Specific methods for probe breakpoints. */ |
12903 | ||
12904 | static int | |
12905 | bkpt_probe_insert_location (struct bp_location *bl) | |
12906 | { | |
12907 | int v = bkpt_insert_location (bl); | |
12908 | ||
12909 | if (v == 0) | |
12910 | { | |
12911 | /* The insertion was successful, now let's set the probe's semaphore | |
12912 | if needed. */ | |
0ea5cda8 SDJ |
12913 | if (bl->probe.probe->pops->set_semaphore != NULL) |
12914 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
12915 | bl->probe.objfile, | |
12916 | bl->gdbarch); | |
55aa24fb SDJ |
12917 | } |
12918 | ||
12919 | return v; | |
12920 | } | |
12921 | ||
12922 | static int | |
73971819 PA |
12923 | bkpt_probe_remove_location (struct bp_location *bl, |
12924 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12925 | { |
12926 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
12927 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
12928 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
12929 | bl->probe.objfile, | |
12930 | bl->gdbarch); | |
55aa24fb | 12931 | |
73971819 | 12932 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12933 | } |
12934 | ||
12935 | static void | |
f00aae0f | 12936 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12937 | struct linespec_result *canonical, |
f00aae0f | 12938 | enum bptype type_wanted) |
55aa24fb SDJ |
12939 | { |
12940 | struct linespec_sals lsal; | |
12941 | ||
c2f4122d | 12942 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12943 | lsal.canonical |
12944 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12945 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12946 | } |
12947 | ||
6c5b2ebe | 12948 | static std::vector<symtab_and_line> |
f00aae0f KS |
12949 | bkpt_probe_decode_location (struct breakpoint *b, |
12950 | const struct event_location *location, | |
6c5b2ebe | 12951 | struct program_space *search_pspace) |
55aa24fb | 12952 | { |
6c5b2ebe PA |
12953 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12954 | if (sals.empty ()) | |
55aa24fb | 12955 | error (_("probe not found")); |
6c5b2ebe | 12956 | return sals; |
55aa24fb SDJ |
12957 | } |
12958 | ||
348d480f | 12959 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12960 | |
348d480f PA |
12961 | static void |
12962 | tracepoint_re_set (struct breakpoint *b) | |
12963 | { | |
12964 | breakpoint_re_set_default (b); | |
12965 | } | |
876fa593 | 12966 | |
348d480f PA |
12967 | static int |
12968 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12969 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12970 | const struct target_waitstatus *ws) |
348d480f PA |
12971 | { |
12972 | /* By definition, the inferior does not report stops at | |
12973 | tracepoints. */ | |
12974 | return 0; | |
74960c60 VP |
12975 | } |
12976 | ||
12977 | static void | |
348d480f PA |
12978 | tracepoint_print_one_detail (const struct breakpoint *self, |
12979 | struct ui_out *uiout) | |
74960c60 | 12980 | { |
d9b3f62e PA |
12981 | struct tracepoint *tp = (struct tracepoint *) self; |
12982 | if (tp->static_trace_marker_id) | |
348d480f PA |
12983 | { |
12984 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12985 | |
112e8700 SM |
12986 | uiout->text ("\tmarker id is "); |
12987 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12988 | tp->static_trace_marker_id); |
112e8700 | 12989 | uiout->text ("\n"); |
348d480f | 12990 | } |
0d381245 VP |
12991 | } |
12992 | ||
a474d7c2 | 12993 | static void |
348d480f | 12994 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12995 | { |
112e8700 | 12996 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12997 | return; |
cc59ec59 | 12998 | |
348d480f PA |
12999 | switch (b->type) |
13000 | { | |
13001 | case bp_tracepoint: | |
13002 | printf_filtered (_("Tracepoint")); | |
13003 | printf_filtered (_(" %d"), b->number); | |
13004 | break; | |
13005 | case bp_fast_tracepoint: | |
13006 | printf_filtered (_("Fast tracepoint")); | |
13007 | printf_filtered (_(" %d"), b->number); | |
13008 | break; | |
13009 | case bp_static_tracepoint: | |
13010 | printf_filtered (_("Static tracepoint")); | |
13011 | printf_filtered (_(" %d"), b->number); | |
13012 | break; | |
13013 | default: | |
13014 | internal_error (__FILE__, __LINE__, | |
13015 | _("unhandled tracepoint type %d"), (int) b->type); | |
13016 | } | |
13017 | ||
13018 | say_where (b); | |
a474d7c2 PA |
13019 | } |
13020 | ||
348d480f | 13021 | static void |
d9b3f62e | 13022 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13023 | { |
d9b3f62e PA |
13024 | struct tracepoint *tp = (struct tracepoint *) self; |
13025 | ||
13026 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13027 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 13028 | else if (self->type == bp_static_tracepoint) |
348d480f | 13029 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13030 | else if (self->type == bp_tracepoint) |
348d480f PA |
13031 | fprintf_unfiltered (fp, "trace"); |
13032 | else | |
13033 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13034 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13035 | |
f00aae0f | 13036 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 13037 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
13038 | print_recreate_thread (self, fp); |
13039 | ||
13040 | if (tp->pass_count) | |
13041 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13042 | } |
13043 | ||
983af33b | 13044 | static void |
f00aae0f KS |
13045 | tracepoint_create_sals_from_location (const struct event_location *location, |
13046 | struct linespec_result *canonical, | |
13047 | enum bptype type_wanted) | |
983af33b | 13048 | { |
f00aae0f | 13049 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13050 | } |
13051 | ||
13052 | static void | |
13053 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13054 | struct linespec_result *canonical, | |
e1e01040 PA |
13055 | gdb::unique_xmalloc_ptr<char> cond_string, |
13056 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13057 | enum bptype type_wanted, |
13058 | enum bpdisp disposition, | |
13059 | int thread, | |
13060 | int task, int ignore_count, | |
13061 | const struct breakpoint_ops *ops, | |
13062 | int from_tty, int enabled, | |
44f238bb | 13063 | int internal, unsigned flags) |
983af33b | 13064 | { |
023fa29b | 13065 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13066 | std::move (cond_string), |
13067 | std::move (extra_string), | |
e7e0cddf | 13068 | type_wanted, |
983af33b SDJ |
13069 | disposition, thread, task, |
13070 | ignore_count, ops, from_tty, | |
44f238bb | 13071 | enabled, internal, flags); |
983af33b SDJ |
13072 | } |
13073 | ||
6c5b2ebe | 13074 | static std::vector<symtab_and_line> |
f00aae0f KS |
13075 | tracepoint_decode_location (struct breakpoint *b, |
13076 | const struct event_location *location, | |
6c5b2ebe | 13077 | struct program_space *search_pspace) |
983af33b | 13078 | { |
6c5b2ebe | 13079 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13080 | } |
13081 | ||
2060206e | 13082 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13083 | |
55aa24fb SDJ |
13084 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13085 | static probe. */ | |
13086 | ||
13087 | static void | |
f00aae0f KS |
13088 | tracepoint_probe_create_sals_from_location |
13089 | (const struct event_location *location, | |
13090 | struct linespec_result *canonical, | |
13091 | enum bptype type_wanted) | |
55aa24fb SDJ |
13092 | { |
13093 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13094 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13095 | } |
13096 | ||
6c5b2ebe | 13097 | static std::vector<symtab_and_line> |
f00aae0f KS |
13098 | tracepoint_probe_decode_location (struct breakpoint *b, |
13099 | const struct event_location *location, | |
6c5b2ebe | 13100 | struct program_space *search_pspace) |
55aa24fb SDJ |
13101 | { |
13102 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13103 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13104 | } |
13105 | ||
13106 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13107 | ||
5c2b4418 HZ |
13108 | /* Dprintf breakpoint_ops methods. */ |
13109 | ||
13110 | static void | |
13111 | dprintf_re_set (struct breakpoint *b) | |
13112 | { | |
13113 | breakpoint_re_set_default (b); | |
13114 | ||
f00aae0f KS |
13115 | /* extra_string should never be non-NULL for dprintf. */ |
13116 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13117 | |
13118 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13119 | 2 - create a dprintf, which resolves fine. | |
13120 | 3 - disconnect from target 1 | |
13121 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13122 | ||
13123 | After steps #3/#4, you'll want the dprintf command list to | |
13124 | be updated, because target 1 and 2 may well return different | |
13125 | answers for target_can_run_breakpoint_commands(). | |
13126 | Given absence of finer grained resetting, we get to do | |
13127 | it all the time. */ | |
13128 | if (b->extra_string != NULL) | |
13129 | update_dprintf_command_list (b); | |
13130 | } | |
13131 | ||
2d9442cc HZ |
13132 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13133 | ||
13134 | static void | |
13135 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13136 | { | |
f00aae0f | 13137 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13138 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13139 | tp->extra_string); |
13140 | print_recreate_thread (tp, fp); | |
13141 | } | |
13142 | ||
9d6e6e84 HZ |
13143 | /* Implement the "after_condition_true" breakpoint_ops method for |
13144 | dprintf. | |
13145 | ||
13146 | dprintf's are implemented with regular commands in their command | |
13147 | list, but we run the commands here instead of before presenting the | |
13148 | stop to the user, as dprintf's don't actually cause a stop. This | |
13149 | also makes it so that the commands of multiple dprintfs at the same | |
13150 | address are all handled. */ | |
13151 | ||
13152 | static void | |
13153 | dprintf_after_condition_true (struct bpstats *bs) | |
13154 | { | |
04afa70c | 13155 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13156 | struct bpstats *tmp_bs_p = &tmp_bs; |
13157 | ||
13158 | /* dprintf's never cause a stop. This wasn't set in the | |
13159 | check_status hook instead because that would make the dprintf's | |
13160 | condition not be evaluated. */ | |
13161 | bs->stop = 0; | |
13162 | ||
13163 | /* Run the command list here. Take ownership of it instead of | |
13164 | copying. We never want these commands to run later in | |
13165 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13166 | be set at same address as this dprintf, or even if running the | |
13167 | commands here throws. */ | |
13168 | tmp_bs.commands = bs->commands; | |
13169 | bs->commands = NULL; | |
9d6e6e84 HZ |
13170 | |
13171 | bpstat_do_actions_1 (&tmp_bs_p); | |
13172 | ||
13173 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13174 | bpstat_do_actions_1 may return early without processing the whole | |
13175 | list. */ | |
9d6e6e84 HZ |
13176 | } |
13177 | ||
983af33b SDJ |
13178 | /* The breakpoint_ops structure to be used on static tracepoints with |
13179 | markers (`-m'). */ | |
13180 | ||
13181 | static void | |
f00aae0f | 13182 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13183 | struct linespec_result *canonical, |
f00aae0f | 13184 | enum bptype type_wanted) |
983af33b SDJ |
13185 | { |
13186 | struct linespec_sals lsal; | |
f00aae0f | 13187 | const char *arg_start, *arg; |
983af33b | 13188 | |
f00aae0f KS |
13189 | arg = arg_start = get_linespec_location (location); |
13190 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13191 | |
f2fc3015 TT |
13192 | std::string str (arg_start, arg - arg_start); |
13193 | const char *ptr = str.c_str (); | |
13194 | canonical->location = new_linespec_location (&ptr); | |
983af33b | 13195 | |
8e9e35b1 TT |
13196 | lsal.canonical |
13197 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13198 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13199 | } |
13200 | ||
13201 | static void | |
13202 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13203 | struct linespec_result *canonical, | |
e1e01040 PA |
13204 | gdb::unique_xmalloc_ptr<char> cond_string, |
13205 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13206 | enum bptype type_wanted, |
13207 | enum bpdisp disposition, | |
13208 | int thread, | |
13209 | int task, int ignore_count, | |
13210 | const struct breakpoint_ops *ops, | |
13211 | int from_tty, int enabled, | |
44f238bb | 13212 | int internal, unsigned flags) |
983af33b | 13213 | { |
6c5b2ebe | 13214 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13215 | |
13216 | /* If the user is creating a static tracepoint by marker id | |
13217 | (strace -m MARKER_ID), then store the sals index, so that | |
13218 | breakpoint_re_set can try to match up which of the newly | |
13219 | found markers corresponds to this one, and, don't try to | |
13220 | expand multiple locations for each sal, given than SALS | |
13221 | already should contain all sals for MARKER_ID. */ | |
13222 | ||
6c5b2ebe | 13223 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13224 | { |
6c5b2ebe PA |
13225 | event_location_up location |
13226 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13227 | |
b270e6f9 | 13228 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13229 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13230 | std::move (location), NULL, |
e1e01040 PA |
13231 | std::move (cond_string), |
13232 | std::move (extra_string), | |
e7e0cddf | 13233 | type_wanted, disposition, |
983af33b | 13234 | thread, task, ignore_count, ops, |
44f238bb | 13235 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13236 | canonical->special_display); |
13237 | /* Given that its possible to have multiple markers with | |
13238 | the same string id, if the user is creating a static | |
13239 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13240 | store the sals index, so that breakpoint_re_set can | |
13241 | try to match up which of the newly found markers | |
13242 | corresponds to this one */ | |
13243 | tp->static_trace_marker_id_idx = i; | |
13244 | ||
b270e6f9 | 13245 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13246 | } |
13247 | } | |
13248 | ||
6c5b2ebe | 13249 | static std::vector<symtab_and_line> |
f00aae0f KS |
13250 | strace_marker_decode_location (struct breakpoint *b, |
13251 | const struct event_location *location, | |
6c5b2ebe | 13252 | struct program_space *search_pspace) |
983af33b SDJ |
13253 | { |
13254 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13255 | const char *s = get_linespec_location (location); |
983af33b | 13256 | |
6c5b2ebe PA |
13257 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13258 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13259 | { |
6c5b2ebe PA |
13260 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13261 | sals.resize (1); | |
13262 | return sals; | |
983af33b SDJ |
13263 | } |
13264 | else | |
13265 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13266 | } | |
13267 | ||
13268 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13269 | ||
13270 | static int | |
13271 | strace_marker_p (struct breakpoint *b) | |
13272 | { | |
13273 | return b->ops == &strace_marker_breakpoint_ops; | |
13274 | } | |
13275 | ||
53a5351d | 13276 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13277 | structures. */ |
c906108c SS |
13278 | |
13279 | void | |
fba45db2 | 13280 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13281 | { |
52f0bd74 | 13282 | struct breakpoint *b; |
c906108c | 13283 | |
8a3fe4f8 | 13284 | gdb_assert (bpt != NULL); |
c906108c | 13285 | |
4a64f543 MS |
13286 | /* Has this bp already been deleted? This can happen because |
13287 | multiple lists can hold pointers to bp's. bpstat lists are | |
13288 | especial culprits. | |
13289 | ||
13290 | One example of this happening is a watchpoint's scope bp. When | |
13291 | the scope bp triggers, we notice that the watchpoint is out of | |
13292 | scope, and delete it. We also delete its scope bp. But the | |
13293 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13294 | That bpstat is then checked for auto-deleting bp's, which are | |
13295 | deleted. | |
13296 | ||
13297 | A real solution to this problem might involve reference counts in | |
13298 | bp's, and/or giving them pointers back to their referencing | |
13299 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13300 | storage when no more references were extent. A cheaper bandaid | |
13301 | was chosen. */ | |
c906108c SS |
13302 | if (bpt->type == bp_none) |
13303 | return; | |
13304 | ||
4a64f543 MS |
13305 | /* At least avoid this stale reference until the reference counting |
13306 | of breakpoints gets resolved. */ | |
d0fb5eae | 13307 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13308 | { |
d0fb5eae | 13309 | struct breakpoint *related; |
3a5c3e22 | 13310 | struct watchpoint *w; |
d0fb5eae JK |
13311 | |
13312 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13313 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13314 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13315 | w = (struct watchpoint *) bpt; |
13316 | else | |
13317 | w = NULL; | |
13318 | if (w != NULL) | |
13319 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13320 | |
13321 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13322 | for (related = bpt; related->related_breakpoint != bpt; | |
13323 | related = related->related_breakpoint); | |
13324 | related->related_breakpoint = bpt->related_breakpoint; | |
13325 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13326 | } |
13327 | ||
a9634178 TJB |
13328 | /* watch_command_1 creates a watchpoint but only sets its number if |
13329 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13330 | a problem in that process, we'll be asked to delete the half-created | |
13331 | watchpoint. In that case, don't announce the deletion. */ | |
13332 | if (bpt->number) | |
13333 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13334 | |
c906108c SS |
13335 | if (breakpoint_chain == bpt) |
13336 | breakpoint_chain = bpt->next; | |
13337 | ||
c906108c SS |
13338 | ALL_BREAKPOINTS (b) |
13339 | if (b->next == bpt) | |
c5aa993b JM |
13340 | { |
13341 | b->next = bpt->next; | |
13342 | break; | |
13343 | } | |
c906108c | 13344 | |
f431efe5 PA |
13345 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13346 | been freed. */ | |
13347 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13348 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13349 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13350 | commands are associated with the bpstat; if we remove it here, | |
13351 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13352 | event-top.c won't do anything, and temporary breakpoints with | |
13353 | commands won't work. */ | |
13354 | ||
13355 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13356 | ||
4a64f543 MS |
13357 | /* Now that breakpoint is removed from breakpoint list, update the |
13358 | global location list. This will remove locations that used to | |
13359 | belong to this breakpoint. Do this before freeing the breakpoint | |
13360 | itself, since remove_breakpoint looks at location's owner. It | |
13361 | might be better design to have location completely | |
13362 | self-contained, but it's not the case now. */ | |
44702360 | 13363 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13364 | |
4a64f543 MS |
13365 | /* On the chance that someone will soon try again to delete this |
13366 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13367 | bpt->type = bp_none; |
4d01a485 | 13368 | delete bpt; |
c906108c SS |
13369 | } |
13370 | ||
4d6140d9 AC |
13371 | static void |
13372 | do_delete_breakpoint_cleanup (void *b) | |
13373 | { | |
9a3c8263 | 13374 | delete_breakpoint ((struct breakpoint *) b); |
4d6140d9 AC |
13375 | } |
13376 | ||
13377 | struct cleanup * | |
13378 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13379 | { | |
13380 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13381 | } | |
13382 | ||
51be5b68 PA |
13383 | /* Iterator function to call a user-provided callback function once |
13384 | for each of B and its related breakpoints. */ | |
13385 | ||
13386 | static void | |
13387 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13388 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13389 | { |
13390 | struct breakpoint *related; | |
13391 | ||
13392 | related = b; | |
13393 | do | |
13394 | { | |
13395 | struct breakpoint *next; | |
13396 | ||
13397 | /* FUNCTION may delete RELATED. */ | |
13398 | next = related->related_breakpoint; | |
13399 | ||
13400 | if (next == related) | |
13401 | { | |
13402 | /* RELATED is the last ring entry. */ | |
48649e1b | 13403 | function (related); |
51be5b68 PA |
13404 | |
13405 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13406 | B. There's nothing left to do anyway, so just break | |
13407 | out. */ | |
13408 | break; | |
13409 | } | |
13410 | else | |
48649e1b | 13411 | function (related); |
51be5b68 PA |
13412 | |
13413 | related = next; | |
13414 | } | |
13415 | while (related != b); | |
13416 | } | |
95a42b64 | 13417 | |
4495129a | 13418 | static void |
981a3fb3 | 13419 | delete_command (const char *arg, int from_tty) |
c906108c | 13420 | { |
35df4500 | 13421 | struct breakpoint *b, *b_tmp; |
c906108c | 13422 | |
ea9365bb TT |
13423 | dont_repeat (); |
13424 | ||
c906108c SS |
13425 | if (arg == 0) |
13426 | { | |
13427 | int breaks_to_delete = 0; | |
13428 | ||
46c6471b PA |
13429 | /* Delete all breakpoints if no argument. Do not delete |
13430 | internal breakpoints, these have to be deleted with an | |
13431 | explicit breakpoint number argument. */ | |
c5aa993b | 13432 | ALL_BREAKPOINTS (b) |
46c6471b | 13433 | if (user_breakpoint_p (b)) |
973d738b DJ |
13434 | { |
13435 | breaks_to_delete = 1; | |
13436 | break; | |
13437 | } | |
c906108c SS |
13438 | |
13439 | /* Ask user only if there are some breakpoints to delete. */ | |
13440 | if (!from_tty | |
e2e0b3e5 | 13441 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13442 | { |
35df4500 | 13443 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13444 | if (user_breakpoint_p (b)) |
c5aa993b | 13445 | delete_breakpoint (b); |
c906108c SS |
13446 | } |
13447 | } | |
13448 | else | |
48649e1b TT |
13449 | map_breakpoint_numbers |
13450 | (arg, [&] (breakpoint *b) | |
13451 | { | |
13452 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13453 | }); | |
c906108c SS |
13454 | } |
13455 | ||
c2f4122d PA |
13456 | /* Return true if all locations of B bound to PSPACE are pending. If |
13457 | PSPACE is NULL, all locations of all program spaces are | |
13458 | considered. */ | |
13459 | ||
0d381245 | 13460 | static int |
c2f4122d | 13461 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13462 | { |
c2f4122d PA |
13463 | struct bp_location *loc; |
13464 | ||
13465 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13466 | if ((pspace == NULL | |
13467 | || loc->pspace == pspace) | |
13468 | && !loc->shlib_disabled | |
8645ff69 | 13469 | && !loc->pspace->executing_startup) |
0d381245 VP |
13470 | return 0; |
13471 | return 1; | |
fe3f5fa8 VP |
13472 | } |
13473 | ||
776592bf DE |
13474 | /* Subroutine of update_breakpoint_locations to simplify it. |
13475 | Return non-zero if multiple fns in list LOC have the same name. | |
13476 | Null names are ignored. */ | |
13477 | ||
13478 | static int | |
13479 | ambiguous_names_p (struct bp_location *loc) | |
13480 | { | |
13481 | struct bp_location *l; | |
13482 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13483 | (int (*) (const void *, |
13484 | const void *)) streq, | |
776592bf DE |
13485 | NULL, xcalloc, xfree); |
13486 | ||
13487 | for (l = loc; l != NULL; l = l->next) | |
13488 | { | |
13489 | const char **slot; | |
13490 | const char *name = l->function_name; | |
13491 | ||
13492 | /* Allow for some names to be NULL, ignore them. */ | |
13493 | if (name == NULL) | |
13494 | continue; | |
13495 | ||
13496 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13497 | INSERT); | |
4a64f543 MS |
13498 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13499 | returns NULL. */ | |
776592bf DE |
13500 | if (*slot != NULL) |
13501 | { | |
13502 | htab_delete (htab); | |
13503 | return 1; | |
13504 | } | |
13505 | *slot = name; | |
13506 | } | |
13507 | ||
13508 | htab_delete (htab); | |
13509 | return 0; | |
13510 | } | |
13511 | ||
0fb4aa4b PA |
13512 | /* When symbols change, it probably means the sources changed as well, |
13513 | and it might mean the static tracepoint markers are no longer at | |
13514 | the same address or line numbers they used to be at last we | |
13515 | checked. Losing your static tracepoints whenever you rebuild is | |
13516 | undesirable. This function tries to resync/rematch gdb static | |
13517 | tracepoints with the markers on the target, for static tracepoints | |
13518 | that have not been set by marker id. Static tracepoint that have | |
13519 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13520 | The heuristic is: | |
13521 | ||
13522 | 1) For a tracepoint set at a specific address, look for a marker at | |
13523 | the old PC. If one is found there, assume to be the same marker. | |
13524 | If the name / string id of the marker found is different from the | |
13525 | previous known name, assume that means the user renamed the marker | |
13526 | in the sources, and output a warning. | |
13527 | ||
13528 | 2) For a tracepoint set at a given line number, look for a marker | |
13529 | at the new address of the old line number. If one is found there, | |
13530 | assume to be the same marker. If the name / string id of the | |
13531 | marker found is different from the previous known name, assume that | |
13532 | means the user renamed the marker in the sources, and output a | |
13533 | warning. | |
13534 | ||
13535 | 3) If a marker is no longer found at the same address or line, it | |
13536 | may mean the marker no longer exists. But it may also just mean | |
13537 | the code changed a bit. Maybe the user added a few lines of code | |
13538 | that made the marker move up or down (in line number terms). Ask | |
13539 | the target for info about the marker with the string id as we knew | |
13540 | it. If found, update line number and address in the matching | |
13541 | static tracepoint. This will get confused if there's more than one | |
13542 | marker with the same ID (possible in UST, although unadvised | |
13543 | precisely because it confuses tools). */ | |
13544 | ||
13545 | static struct symtab_and_line | |
13546 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13547 | { | |
d9b3f62e | 13548 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13549 | struct static_tracepoint_marker marker; |
13550 | CORE_ADDR pc; | |
0fb4aa4b PA |
13551 | |
13552 | pc = sal.pc; | |
13553 | if (sal.line) | |
13554 | find_line_pc (sal.symtab, sal.line, &pc); | |
13555 | ||
13556 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13557 | { | |
d9b3f62e | 13558 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13559 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13560 | b->number, | |
d9b3f62e | 13561 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13562 | |
d9b3f62e PA |
13563 | xfree (tp->static_trace_marker_id); |
13564 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13565 | release_static_tracepoint_marker (&marker); |
13566 | ||
13567 | return sal; | |
13568 | } | |
13569 | ||
13570 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13571 | by string ID. */ | |
13572 | if (!sal.explicit_pc | |
13573 | && sal.line != 0 | |
13574 | && sal.symtab != NULL | |
d9b3f62e | 13575 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13576 | { |
13577 | VEC(static_tracepoint_marker_p) *markers; | |
13578 | ||
13579 | markers | |
d9b3f62e | 13580 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13581 | |
13582 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13583 | { | |
0fb4aa4b | 13584 | struct symbol *sym; |
80e1d417 | 13585 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13586 | struct ui_out *uiout = current_uiout; |
67994074 | 13587 | struct explicit_location explicit_loc; |
0fb4aa4b | 13588 | |
80e1d417 | 13589 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13590 | |
d9b3f62e | 13591 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13592 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13593 | |
13594 | warning (_("marker for static tracepoint %d (%s) not " | |
13595 | "found at previous line number"), | |
d9b3f62e | 13596 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13597 | |
51abb421 | 13598 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13599 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13600 | uiout->text ("Now in "); |
0fb4aa4b PA |
13601 | if (sym) |
13602 | { | |
112e8700 SM |
13603 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13604 | uiout->text (" at "); | |
0fb4aa4b | 13605 | } |
112e8700 | 13606 | uiout->field_string ("file", |
05cba821 | 13607 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13608 | uiout->text (":"); |
0fb4aa4b | 13609 | |
112e8700 | 13610 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13611 | { |
0b0865da | 13612 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13613 | |
112e8700 | 13614 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13615 | } |
13616 | ||
112e8700 SM |
13617 | uiout->field_int ("line", sal2.line); |
13618 | uiout->text ("\n"); | |
0fb4aa4b | 13619 | |
80e1d417 | 13620 | b->loc->line_number = sal2.line; |
2f202fde | 13621 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13622 | |
d28cd78a | 13623 | b->location.reset (NULL); |
67994074 KS |
13624 | initialize_explicit_location (&explicit_loc); |
13625 | explicit_loc.source_filename | |
00e52e53 | 13626 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13627 | explicit_loc.line_offset.offset = b->loc->line_number; |
13628 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13629 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13630 | |
13631 | /* Might be nice to check if function changed, and warn if | |
13632 | so. */ | |
13633 | ||
80e1d417 | 13634 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13635 | } |
13636 | } | |
13637 | return sal; | |
13638 | } | |
13639 | ||
8d3788bd VP |
13640 | /* Returns 1 iff locations A and B are sufficiently same that |
13641 | we don't need to report breakpoint as changed. */ | |
13642 | ||
13643 | static int | |
13644 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13645 | { | |
13646 | while (a && b) | |
13647 | { | |
13648 | if (a->address != b->address) | |
13649 | return 0; | |
13650 | ||
13651 | if (a->shlib_disabled != b->shlib_disabled) | |
13652 | return 0; | |
13653 | ||
13654 | if (a->enabled != b->enabled) | |
13655 | return 0; | |
13656 | ||
13657 | a = a->next; | |
13658 | b = b->next; | |
13659 | } | |
13660 | ||
13661 | if ((a == NULL) != (b == NULL)) | |
13662 | return 0; | |
13663 | ||
13664 | return 1; | |
13665 | } | |
13666 | ||
c2f4122d PA |
13667 | /* Split all locations of B that are bound to PSPACE out of B's |
13668 | location list to a separate list and return that list's head. If | |
13669 | PSPACE is NULL, hoist out all locations of B. */ | |
13670 | ||
13671 | static struct bp_location * | |
13672 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13673 | { | |
13674 | struct bp_location head; | |
13675 | struct bp_location *i = b->loc; | |
13676 | struct bp_location **i_link = &b->loc; | |
13677 | struct bp_location *hoisted = &head; | |
13678 | ||
13679 | if (pspace == NULL) | |
13680 | { | |
13681 | i = b->loc; | |
13682 | b->loc = NULL; | |
13683 | return i; | |
13684 | } | |
13685 | ||
13686 | head.next = NULL; | |
13687 | ||
13688 | while (i != NULL) | |
13689 | { | |
13690 | if (i->pspace == pspace) | |
13691 | { | |
13692 | *i_link = i->next; | |
13693 | i->next = NULL; | |
13694 | hoisted->next = i; | |
13695 | hoisted = i; | |
13696 | } | |
13697 | else | |
13698 | i_link = &i->next; | |
13699 | i = *i_link; | |
13700 | } | |
13701 | ||
13702 | return head.next; | |
13703 | } | |
13704 | ||
13705 | /* Create new breakpoint locations for B (a hardware or software | |
13706 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13707 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13708 | FILTER_PSPACE. Locations of other program spaces are left | |
13709 | untouched. */ | |
f1310107 | 13710 | |
0e30163f | 13711 | void |
0d381245 | 13712 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13713 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13714 | gdb::array_view<const symtab_and_line> sals, |
13715 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 VP |
13716 | { |
13717 | int i; | |
c2f4122d | 13718 | struct bp_location *existing_locations; |
0d381245 | 13719 | |
6c5b2ebe | 13720 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13721 | { |
13722 | /* Ranged breakpoints have only one start location and one end | |
13723 | location. */ | |
13724 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13725 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13726 | "multiple locations found\n"), | |
13727 | b->number); | |
13728 | return; | |
13729 | } | |
f1310107 | 13730 | |
4a64f543 MS |
13731 | /* If there's no new locations, and all existing locations are |
13732 | pending, don't do anything. This optimizes the common case where | |
13733 | all locations are in the same shared library, that was unloaded. | |
13734 | We'd like to retain the location, so that when the library is | |
13735 | loaded again, we don't loose the enabled/disabled status of the | |
13736 | individual locations. */ | |
6c5b2ebe | 13737 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13738 | return; |
13739 | ||
c2f4122d | 13740 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13741 | |
6c5b2ebe | 13742 | for (const auto &sal : sals) |
fe3f5fa8 | 13743 | { |
f8eba3c6 TT |
13744 | struct bp_location *new_loc; |
13745 | ||
6c5b2ebe | 13746 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13747 | |
6c5b2ebe | 13748 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13749 | |
0d381245 VP |
13750 | /* Reparse conditions, they might contain references to the |
13751 | old symtab. */ | |
13752 | if (b->cond_string != NULL) | |
13753 | { | |
bbc13ae3 | 13754 | const char *s; |
fe3f5fa8 | 13755 | |
0d381245 | 13756 | s = b->cond_string; |
492d29ea | 13757 | TRY |
0d381245 | 13758 | { |
6c5b2ebe PA |
13759 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13760 | block_for_pc (sal.pc), | |
0d381245 VP |
13761 | 0); |
13762 | } | |
492d29ea | 13763 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13764 | { |
3e43a32a MS |
13765 | warning (_("failed to reevaluate condition " |
13766 | "for breakpoint %d: %s"), | |
0d381245 VP |
13767 | b->number, e.message); |
13768 | new_loc->enabled = 0; | |
13769 | } | |
492d29ea | 13770 | END_CATCH |
0d381245 | 13771 | } |
fe3f5fa8 | 13772 | |
6c5b2ebe | 13773 | if (!sals_end.empty ()) |
f1310107 | 13774 | { |
6c5b2ebe | 13775 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13776 | |
6c5b2ebe | 13777 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13778 | } |
0d381245 | 13779 | } |
fe3f5fa8 | 13780 | |
4a64f543 MS |
13781 | /* If possible, carry over 'disable' status from existing |
13782 | breakpoints. */ | |
0d381245 VP |
13783 | { |
13784 | struct bp_location *e = existing_locations; | |
776592bf DE |
13785 | /* If there are multiple breakpoints with the same function name, |
13786 | e.g. for inline functions, comparing function names won't work. | |
13787 | Instead compare pc addresses; this is just a heuristic as things | |
13788 | may have moved, but in practice it gives the correct answer | |
13789 | often enough until a better solution is found. */ | |
13790 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13791 | ||
0d381245 VP |
13792 | for (; e; e = e->next) |
13793 | { | |
13794 | if (!e->enabled && e->function_name) | |
13795 | { | |
13796 | struct bp_location *l = b->loc; | |
776592bf DE |
13797 | if (have_ambiguous_names) |
13798 | { | |
13799 | for (; l; l = l->next) | |
f1310107 | 13800 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13801 | { |
13802 | l->enabled = 0; | |
13803 | break; | |
13804 | } | |
13805 | } | |
13806 | else | |
13807 | { | |
13808 | for (; l; l = l->next) | |
13809 | if (l->function_name | |
13810 | && strcmp (e->function_name, l->function_name) == 0) | |
13811 | { | |
13812 | l->enabled = 0; | |
13813 | break; | |
13814 | } | |
13815 | } | |
0d381245 VP |
13816 | } |
13817 | } | |
13818 | } | |
fe3f5fa8 | 13819 | |
8d3788bd VP |
13820 | if (!locations_are_equal (existing_locations, b->loc)) |
13821 | observer_notify_breakpoint_modified (b); | |
fe3f5fa8 VP |
13822 | } |
13823 | ||
f00aae0f | 13824 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13825 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13826 | ||
6c5b2ebe | 13827 | static std::vector<symtab_and_line> |
f00aae0f | 13828 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13829 | struct program_space *search_pspace, int *found) |
ef23e705 | 13830 | { |
492d29ea | 13831 | struct gdb_exception exception = exception_none; |
ef23e705 | 13832 | |
983af33b | 13833 | gdb_assert (b->ops != NULL); |
ef23e705 | 13834 | |
6c5b2ebe PA |
13835 | std::vector<symtab_and_line> sals; |
13836 | ||
492d29ea | 13837 | TRY |
ef23e705 | 13838 | { |
6c5b2ebe | 13839 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13840 | } |
492d29ea | 13841 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13842 | { |
13843 | int not_found_and_ok = 0; | |
492d29ea PA |
13844 | |
13845 | exception = e; | |
13846 | ||
ef23e705 TJB |
13847 | /* For pending breakpoints, it's expected that parsing will |
13848 | fail until the right shared library is loaded. User has | |
13849 | already told to create pending breakpoints and don't need | |
13850 | extra messages. If breakpoint is in bp_shlib_disabled | |
13851 | state, then user already saw the message about that | |
13852 | breakpoint being disabled, and don't want to see more | |
13853 | errors. */ | |
58438ac1 | 13854 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13855 | && (b->condition_not_parsed |
13856 | || (b->loc != NULL | |
13857 | && search_pspace != NULL | |
13858 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13859 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13860 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13861 | || b->enable_state == bp_disabled)) |
13862 | not_found_and_ok = 1; | |
13863 | ||
13864 | if (!not_found_and_ok) | |
13865 | { | |
13866 | /* We surely don't want to warn about the same breakpoint | |
13867 | 10 times. One solution, implemented here, is disable | |
13868 | the breakpoint on error. Another solution would be to | |
13869 | have separate 'warning emitted' flag. Since this | |
13870 | happens only when a binary has changed, I don't know | |
13871 | which approach is better. */ | |
13872 | b->enable_state = bp_disabled; | |
13873 | throw_exception (e); | |
13874 | } | |
13875 | } | |
492d29ea | 13876 | END_CATCH |
ef23e705 | 13877 | |
492d29ea | 13878 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13879 | { |
6c5b2ebe PA |
13880 | for (auto &sal : sals) |
13881 | resolve_sal_pc (&sal); | |
f00aae0f | 13882 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13883 | { |
ed1d1739 KS |
13884 | char *cond_string, *extra_string; |
13885 | int thread, task; | |
ef23e705 | 13886 | |
6c5b2ebe | 13887 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13888 | &cond_string, &thread, &task, |
13889 | &extra_string); | |
f00aae0f | 13890 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13891 | if (cond_string) |
13892 | b->cond_string = cond_string; | |
13893 | b->thread = thread; | |
13894 | b->task = task; | |
e7e0cddf | 13895 | if (extra_string) |
f00aae0f KS |
13896 | { |
13897 | xfree (b->extra_string); | |
13898 | b->extra_string = extra_string; | |
13899 | } | |
ef23e705 TJB |
13900 | b->condition_not_parsed = 0; |
13901 | } | |
13902 | ||
983af33b | 13903 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13904 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13905 | |
58438ac1 TT |
13906 | *found = 1; |
13907 | } | |
13908 | else | |
13909 | *found = 0; | |
ef23e705 TJB |
13910 | |
13911 | return sals; | |
13912 | } | |
13913 | ||
348d480f PA |
13914 | /* The default re_set method, for typical hardware or software |
13915 | breakpoints. Reevaluate the breakpoint and recreate its | |
13916 | locations. */ | |
13917 | ||
13918 | static void | |
28010a5d | 13919 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13920 | { |
c2f4122d | 13921 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13922 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13923 | |
6c5b2ebe PA |
13924 | int found; |
13925 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13926 | filter_pspace, &found); | |
ef23e705 | 13927 | if (found) |
6c5b2ebe | 13928 | expanded = std::move (sals); |
ef23e705 | 13929 | |
f00aae0f | 13930 | if (b->location_range_end != NULL) |
f1310107 | 13931 | { |
6c5b2ebe PA |
13932 | std::vector<symtab_and_line> sals_end |
13933 | = location_to_sals (b, b->location_range_end.get (), | |
13934 | filter_pspace, &found); | |
f1310107 | 13935 | if (found) |
6c5b2ebe | 13936 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13937 | } |
13938 | ||
c2f4122d | 13939 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13940 | } |
13941 | ||
983af33b SDJ |
13942 | /* Default method for creating SALs from an address string. It basically |
13943 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13944 | ||
13945 | static void | |
f00aae0f KS |
13946 | create_sals_from_location_default (const struct event_location *location, |
13947 | struct linespec_result *canonical, | |
13948 | enum bptype type_wanted) | |
983af33b | 13949 | { |
f00aae0f | 13950 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13951 | } |
13952 | ||
13953 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13954 | function for the `create_breakpoints_sal' method of | |
13955 | breakpoint_ops. */ | |
13956 | ||
13957 | static void | |
13958 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13959 | struct linespec_result *canonical, | |
e1e01040 PA |
13960 | gdb::unique_xmalloc_ptr<char> cond_string, |
13961 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13962 | enum bptype type_wanted, |
13963 | enum bpdisp disposition, | |
13964 | int thread, | |
13965 | int task, int ignore_count, | |
13966 | const struct breakpoint_ops *ops, | |
13967 | int from_tty, int enabled, | |
44f238bb | 13968 | int internal, unsigned flags) |
983af33b | 13969 | { |
e1e01040 PA |
13970 | create_breakpoints_sal (gdbarch, canonical, |
13971 | std::move (cond_string), | |
13972 | std::move (extra_string), | |
983af33b SDJ |
13973 | type_wanted, disposition, |
13974 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13975 | enabled, internal, flags); |
983af33b SDJ |
13976 | } |
13977 | ||
13978 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13979 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13980 | |
6c5b2ebe | 13981 | static std::vector<symtab_and_line> |
f00aae0f KS |
13982 | decode_location_default (struct breakpoint *b, |
13983 | const struct event_location *location, | |
6c5b2ebe | 13984 | struct program_space *search_pspace) |
983af33b SDJ |
13985 | { |
13986 | struct linespec_result canonical; | |
13987 | ||
c2f4122d | 13988 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
13989 | (struct symtab *) NULL, 0, |
13990 | &canonical, multiple_symbols_all, | |
13991 | b->filter); | |
13992 | ||
13993 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13994 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13995 | |
6c5b2ebe | 13996 | if (!canonical.lsals.empty ()) |
983af33b | 13997 | { |
6c5b2ebe PA |
13998 | const linespec_sals &lsal = canonical.lsals[0]; |
13999 | return std::move (lsal.sals); | |
983af33b | 14000 | } |
6c5b2ebe | 14001 | return {}; |
983af33b SDJ |
14002 | } |
14003 | ||
bf469271 | 14004 | /* Reset a breakpoint. */ |
c906108c | 14005 | |
bf469271 PA |
14006 | static void |
14007 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 14008 | { |
fdf44873 TT |
14009 | input_radix = b->input_radix; |
14010 | set_language (b->language); | |
c906108c | 14011 | |
348d480f | 14012 | b->ops->re_set (b); |
c906108c SS |
14013 | } |
14014 | ||
c2f4122d PA |
14015 | /* Re-set breakpoint locations for the current program space. |
14016 | Locations bound to other program spaces are left untouched. */ | |
14017 | ||
c906108c | 14018 | void |
69de3c6a | 14019 | breakpoint_re_set (void) |
c906108c | 14020 | { |
35df4500 | 14021 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 14022 | |
c5aa993b | 14023 | { |
fdf44873 TT |
14024 | scoped_restore_current_language save_language; |
14025 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 14026 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 14027 | |
5ed8105e PA |
14028 | /* Note: we must not try to insert locations until after all |
14029 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
14030 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
14031 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 14032 | |
5ed8105e PA |
14033 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
14034 | { | |
bf469271 PA |
14035 | TRY |
14036 | { | |
14037 | breakpoint_re_set_one (b); | |
14038 | } | |
14039 | CATCH (ex, RETURN_MASK_ALL) | |
14040 | { | |
14041 | exception_fprintf (gdb_stderr, ex, | |
14042 | "Error in re-setting breakpoint %d: ", | |
14043 | b->number); | |
14044 | } | |
14045 | END_CATCH | |
5ed8105e | 14046 | } |
5ed8105e PA |
14047 | |
14048 | jit_breakpoint_re_set (); | |
14049 | } | |
6c95b8df | 14050 | |
af02033e PP |
14051 | create_overlay_event_breakpoint (); |
14052 | create_longjmp_master_breakpoint (); | |
14053 | create_std_terminate_master_breakpoint (); | |
186c406b | 14054 | create_exception_master_breakpoint (); |
2a7f3dff PA |
14055 | |
14056 | /* Now we can insert. */ | |
14057 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
14058 | } |
14059 | \f | |
c906108c SS |
14060 | /* Reset the thread number of this breakpoint: |
14061 | ||
14062 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14063 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14064 | void |
fba45db2 | 14065 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14066 | { |
14067 | if (b->thread != -1) | |
14068 | { | |
39f77062 | 14069 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 14070 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
14071 | |
14072 | /* We're being called after following a fork. The new fork is | |
14073 | selected as current, and unless this was a vfork will have a | |
14074 | different program space from the original thread. Reset that | |
14075 | as well. */ | |
14076 | b->loc->pspace = current_program_space; | |
c906108c SS |
14077 | } |
14078 | } | |
14079 | ||
03ac34d5 MS |
14080 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14081 | If from_tty is nonzero, it prints a message to that effect, | |
14082 | which ends with a period (no newline). */ | |
14083 | ||
c906108c | 14084 | void |
fba45db2 | 14085 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14086 | { |
52f0bd74 | 14087 | struct breakpoint *b; |
c906108c SS |
14088 | |
14089 | if (count < 0) | |
14090 | count = 0; | |
14091 | ||
14092 | ALL_BREAKPOINTS (b) | |
14093 | if (b->number == bptnum) | |
c5aa993b | 14094 | { |
d77f58be SS |
14095 | if (is_tracepoint (b)) |
14096 | { | |
14097 | if (from_tty && count != 0) | |
14098 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14099 | bptnum); | |
14100 | return; | |
14101 | } | |
14102 | ||
c5aa993b | 14103 | b->ignore_count = count; |
221ea385 KS |
14104 | if (from_tty) |
14105 | { | |
14106 | if (count == 0) | |
3e43a32a MS |
14107 | printf_filtered (_("Will stop next time " |
14108 | "breakpoint %d is reached."), | |
221ea385 KS |
14109 | bptnum); |
14110 | else if (count == 1) | |
a3f17187 | 14111 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14112 | bptnum); |
14113 | else | |
3e43a32a MS |
14114 | printf_filtered (_("Will ignore next %d " |
14115 | "crossings of breakpoint %d."), | |
221ea385 KS |
14116 | count, bptnum); |
14117 | } | |
8d3788bd | 14118 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14119 | return; |
14120 | } | |
c906108c | 14121 | |
8a3fe4f8 | 14122 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14123 | } |
14124 | ||
c906108c SS |
14125 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14126 | ||
14127 | static void | |
fba45db2 | 14128 | ignore_command (char *args, int from_tty) |
c906108c SS |
14129 | { |
14130 | char *p = args; | |
52f0bd74 | 14131 | int num; |
c906108c SS |
14132 | |
14133 | if (p == 0) | |
e2e0b3e5 | 14134 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14135 | |
c906108c | 14136 | num = get_number (&p); |
5c44784c | 14137 | if (num == 0) |
8a3fe4f8 | 14138 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14139 | if (*p == 0) |
8a3fe4f8 | 14140 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14141 | |
14142 | set_ignore_count (num, | |
14143 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14144 | from_tty); | |
221ea385 KS |
14145 | if (from_tty) |
14146 | printf_filtered ("\n"); | |
c906108c SS |
14147 | } |
14148 | \f | |
14149 | /* Call FUNCTION on each of the breakpoints | |
14150 | whose numbers are given in ARGS. */ | |
14151 | ||
14152 | static void | |
896b6bda | 14153 | map_breakpoint_numbers (const char *args, |
48649e1b | 14154 | gdb::function_view<void (breakpoint *)> function) |
c906108c | 14155 | { |
52f0bd74 AC |
14156 | int num; |
14157 | struct breakpoint *b, *tmp; | |
c906108c | 14158 | |
b9d61307 | 14159 | if (args == 0 || *args == '\0') |
e2e0b3e5 | 14160 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14161 | |
bfd28288 | 14162 | number_or_range_parser parser (args); |
197f0a60 | 14163 | |
bfd28288 | 14164 | while (!parser.finished ()) |
c906108c | 14165 | { |
bfd28288 PA |
14166 | const char *p = parser.cur_tok (); |
14167 | bool match = false; | |
197f0a60 | 14168 | |
bfd28288 | 14169 | num = parser.get_number (); |
5c44784c | 14170 | if (num == 0) |
c5aa993b | 14171 | { |
8a3fe4f8 | 14172 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14173 | } |
14174 | else | |
14175 | { | |
14176 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14177 | if (b->number == num) | |
14178 | { | |
bfd28288 | 14179 | match = true; |
48649e1b | 14180 | function (b); |
11cf8741 | 14181 | break; |
5c44784c | 14182 | } |
bfd28288 | 14183 | if (!match) |
a3f17187 | 14184 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14185 | } |
c906108c SS |
14186 | } |
14187 | } | |
14188 | ||
0d381245 | 14189 | static struct bp_location * |
cb791d59 | 14190 | find_location_by_number (const char *number) |
0d381245 | 14191 | { |
cb791d59 | 14192 | const char *p1; |
0d381245 VP |
14193 | int bp_num; |
14194 | int loc_num; | |
14195 | struct breakpoint *b; | |
14196 | struct bp_location *loc; | |
14197 | ||
0d381245 | 14198 | p1 = number; |
cb791d59 TT |
14199 | bp_num = get_number_trailer (&p1, '.'); |
14200 | if (bp_num == 0 || p1[0] != '.') | |
0d381245 VP |
14201 | error (_("Bad breakpoint number '%s'"), number); |
14202 | ||
14203 | ALL_BREAKPOINTS (b) | |
14204 | if (b->number == bp_num) | |
14205 | { | |
14206 | break; | |
14207 | } | |
14208 | ||
14209 | if (!b || b->number != bp_num) | |
14210 | error (_("Bad breakpoint number '%s'"), number); | |
14211 | ||
cb791d59 TT |
14212 | /* Skip the dot. */ |
14213 | ++p1; | |
14214 | const char *save = p1; | |
197f0a60 | 14215 | loc_num = get_number (&p1); |
0d381245 VP |
14216 | if (loc_num == 0) |
14217 | error (_("Bad breakpoint location number '%s'"), number); | |
14218 | ||
14219 | --loc_num; | |
14220 | loc = b->loc; | |
14221 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14222 | ; | |
14223 | if (!loc) | |
cb791d59 | 14224 | error (_("Bad breakpoint location number '%s'"), save); |
0d381245 VP |
14225 | |
14226 | return loc; | |
14227 | } | |
14228 | ||
14229 | ||
1900040c MS |
14230 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14231 | If from_tty is nonzero, it prints a message to that effect, | |
14232 | which ends with a period (no newline). */ | |
14233 | ||
c906108c | 14234 | void |
fba45db2 | 14235 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14236 | { |
14237 | /* Never disable a watchpoint scope breakpoint; we want to | |
14238 | hit them when we leave scope so we can delete both the | |
14239 | watchpoint and its scope breakpoint at that time. */ | |
14240 | if (bpt->type == bp_watchpoint_scope) | |
14241 | return; | |
14242 | ||
b5de0fa7 | 14243 | bpt->enable_state = bp_disabled; |
c906108c | 14244 | |
b775012e LM |
14245 | /* Mark breakpoint locations modified. */ |
14246 | mark_breakpoint_modified (bpt); | |
14247 | ||
d248b706 KY |
14248 | if (target_supports_enable_disable_tracepoint () |
14249 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14250 | { | |
14251 | struct bp_location *location; | |
14252 | ||
14253 | for (location = bpt->loc; location; location = location->next) | |
14254 | target_disable_tracepoint (location); | |
14255 | } | |
14256 | ||
44702360 | 14257 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14258 | |
8d3788bd | 14259 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14260 | } |
14261 | ||
c906108c | 14262 | static void |
981a3fb3 | 14263 | disable_command (const char *args, int from_tty) |
c906108c | 14264 | { |
c906108c | 14265 | if (args == 0) |
46c6471b PA |
14266 | { |
14267 | struct breakpoint *bpt; | |
14268 | ||
14269 | ALL_BREAKPOINTS (bpt) | |
14270 | if (user_breakpoint_p (bpt)) | |
14271 | disable_breakpoint (bpt); | |
14272 | } | |
9eaabc75 | 14273 | else |
0d381245 | 14274 | { |
cb791d59 | 14275 | std::string num = extract_arg (&args); |
9eaabc75 | 14276 | |
cb791d59 | 14277 | while (!num.empty ()) |
d248b706 | 14278 | { |
cb791d59 | 14279 | if (num.find ('.') != std::string::npos) |
b775012e | 14280 | { |
cb791d59 | 14281 | struct bp_location *loc = find_location_by_number (num.c_str ()); |
9eaabc75 MW |
14282 | |
14283 | if (loc) | |
14284 | { | |
14285 | if (loc->enabled) | |
14286 | { | |
14287 | loc->enabled = 0; | |
14288 | mark_breakpoint_location_modified (loc); | |
14289 | } | |
14290 | if (target_supports_enable_disable_tracepoint () | |
14291 | && current_trace_status ()->running && loc->owner | |
14292 | && is_tracepoint (loc->owner)) | |
14293 | target_disable_tracepoint (loc); | |
14294 | } | |
44702360 | 14295 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 14296 | } |
9eaabc75 | 14297 | else |
48649e1b TT |
14298 | map_breakpoint_numbers |
14299 | (num.c_str (), [&] (breakpoint *b) | |
14300 | { | |
14301 | iterate_over_related_breakpoints (b, disable_breakpoint); | |
14302 | }); | |
9eaabc75 | 14303 | num = extract_arg (&args); |
d248b706 | 14304 | } |
0d381245 | 14305 | } |
c906108c SS |
14306 | } |
14307 | ||
14308 | static void | |
816338b5 SS |
14309 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14310 | int count) | |
c906108c | 14311 | { |
afe38095 | 14312 | int target_resources_ok; |
c906108c SS |
14313 | |
14314 | if (bpt->type == bp_hardware_breakpoint) | |
14315 | { | |
14316 | int i; | |
c5aa993b | 14317 | i = hw_breakpoint_used_count (); |
53a5351d | 14318 | target_resources_ok = |
d92524f1 | 14319 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14320 | i + 1, 0); |
c906108c | 14321 | if (target_resources_ok == 0) |
8a3fe4f8 | 14322 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14323 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14324 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14325 | } |
14326 | ||
cc60f2e3 | 14327 | if (is_watchpoint (bpt)) |
c906108c | 14328 | { |
d07205c2 | 14329 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14330 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14331 | |
492d29ea | 14332 | TRY |
c906108c | 14333 | { |
3a5c3e22 PA |
14334 | struct watchpoint *w = (struct watchpoint *) bpt; |
14335 | ||
1e718ff1 TJB |
14336 | orig_enable_state = bpt->enable_state; |
14337 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14338 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14339 | } |
492d29ea | 14340 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14341 | { |
1e718ff1 | 14342 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14343 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14344 | bpt->number); | |
14345 | return; | |
c5aa993b | 14346 | } |
492d29ea | 14347 | END_CATCH |
c906108c | 14348 | } |
0101ce28 | 14349 | |
b775012e LM |
14350 | bpt->enable_state = bp_enabled; |
14351 | ||
14352 | /* Mark breakpoint locations modified. */ | |
14353 | mark_breakpoint_modified (bpt); | |
14354 | ||
d248b706 KY |
14355 | if (target_supports_enable_disable_tracepoint () |
14356 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14357 | { | |
14358 | struct bp_location *location; | |
14359 | ||
14360 | for (location = bpt->loc; location; location = location->next) | |
14361 | target_enable_tracepoint (location); | |
14362 | } | |
14363 | ||
b4c291bb | 14364 | bpt->disposition = disposition; |
816338b5 | 14365 | bpt->enable_count = count; |
44702360 | 14366 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14367 | |
8d3788bd | 14368 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14369 | } |
14370 | ||
fe3f5fa8 | 14371 | |
c906108c | 14372 | void |
fba45db2 | 14373 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14374 | { |
816338b5 | 14375 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14376 | } |
14377 | ||
c906108c SS |
14378 | /* The enable command enables the specified breakpoints (or all defined |
14379 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14380 | in stopping the inferior. */ |
c906108c | 14381 | |
c906108c | 14382 | static void |
981a3fb3 | 14383 | enable_command (const char *args, int from_tty) |
c906108c | 14384 | { |
c906108c | 14385 | if (args == 0) |
46c6471b PA |
14386 | { |
14387 | struct breakpoint *bpt; | |
14388 | ||
14389 | ALL_BREAKPOINTS (bpt) | |
14390 | if (user_breakpoint_p (bpt)) | |
14391 | enable_breakpoint (bpt); | |
14392 | } | |
9eaabc75 | 14393 | else |
0d381245 | 14394 | { |
cb791d59 | 14395 | std::string num = extract_arg (&args); |
9eaabc75 | 14396 | |
cb791d59 | 14397 | while (!num.empty ()) |
d248b706 | 14398 | { |
cb791d59 | 14399 | if (num.find ('.') != std::string::npos) |
b775012e | 14400 | { |
cb791d59 | 14401 | struct bp_location *loc = find_location_by_number (num.c_str ()); |
9eaabc75 MW |
14402 | |
14403 | if (loc) | |
14404 | { | |
14405 | if (!loc->enabled) | |
14406 | { | |
14407 | loc->enabled = 1; | |
14408 | mark_breakpoint_location_modified (loc); | |
14409 | } | |
14410 | if (target_supports_enable_disable_tracepoint () | |
14411 | && current_trace_status ()->running && loc->owner | |
14412 | && is_tracepoint (loc->owner)) | |
14413 | target_enable_tracepoint (loc); | |
14414 | } | |
44702360 | 14415 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 14416 | } |
9eaabc75 | 14417 | else |
48649e1b TT |
14418 | map_breakpoint_numbers |
14419 | (num.c_str (), [&] (breakpoint *b) | |
14420 | { | |
14421 | iterate_over_related_breakpoints (b, enable_breakpoint); | |
14422 | }); | |
9eaabc75 | 14423 | num = extract_arg (&args); |
d248b706 | 14424 | } |
0d381245 | 14425 | } |
c906108c SS |
14426 | } |
14427 | ||
c906108c | 14428 | static void |
4495129a | 14429 | enable_once_command (const char *args, int from_tty) |
c906108c | 14430 | { |
48649e1b TT |
14431 | map_breakpoint_numbers |
14432 | (args, [&] (breakpoint *b) | |
14433 | { | |
14434 | iterate_over_related_breakpoints | |
14435 | (b, [&] (breakpoint *bpt) | |
14436 | { | |
14437 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14438 | }); | |
14439 | }); | |
816338b5 SS |
14440 | } |
14441 | ||
14442 | static void | |
4495129a | 14443 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14444 | { |
b9d61307 SM |
14445 | int count; |
14446 | ||
14447 | if (args == NULL) | |
14448 | error_no_arg (_("hit count")); | |
14449 | ||
14450 | count = get_number (&args); | |
816338b5 | 14451 | |
48649e1b TT |
14452 | map_breakpoint_numbers |
14453 | (args, [&] (breakpoint *b) | |
14454 | { | |
14455 | iterate_over_related_breakpoints | |
14456 | (b, [&] (breakpoint *bpt) | |
14457 | { | |
14458 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14459 | }); | |
14460 | }); | |
c906108c SS |
14461 | } |
14462 | ||
c906108c | 14463 | static void |
4495129a | 14464 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14465 | { |
48649e1b TT |
14466 | map_breakpoint_numbers |
14467 | (args, [&] (breakpoint *b) | |
14468 | { | |
14469 | iterate_over_related_breakpoints | |
14470 | (b, [&] (breakpoint *bpt) | |
14471 | { | |
14472 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14473 | }); | |
14474 | }); | |
c906108c SS |
14475 | } |
14476 | \f | |
fa8d40ab | 14477 | static void |
981a3fb3 | 14478 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14479 | { |
14480 | } | |
14481 | ||
14482 | static void | |
981a3fb3 | 14483 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14484 | { |
14485 | } | |
14486 | ||
1f3b5d1b PP |
14487 | /* Invalidate last known value of any hardware watchpoint if |
14488 | the memory which that value represents has been written to by | |
14489 | GDB itself. */ | |
14490 | ||
14491 | static void | |
8de0566d YQ |
14492 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14493 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14494 | const bfd_byte *data) |
14495 | { | |
14496 | struct breakpoint *bp; | |
14497 | ||
14498 | ALL_BREAKPOINTS (bp) | |
14499 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14500 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14501 | { |
3a5c3e22 | 14502 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14503 | |
3a5c3e22 PA |
14504 | if (wp->val_valid && wp->val) |
14505 | { | |
14506 | struct bp_location *loc; | |
14507 | ||
14508 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14509 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14510 | && loc->address + loc->length > addr | |
14511 | && addr + len > loc->address) | |
14512 | { | |
14513 | value_free (wp->val); | |
14514 | wp->val = NULL; | |
14515 | wp->val_valid = 0; | |
14516 | } | |
14517 | } | |
1f3b5d1b PP |
14518 | } |
14519 | } | |
14520 | ||
8181d85f DJ |
14521 | /* Create and insert a breakpoint for software single step. */ |
14522 | ||
14523 | void | |
6c95b8df | 14524 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14525 | const address_space *aspace, |
4a64f543 | 14526 | CORE_ADDR next_pc) |
8181d85f | 14527 | { |
7c16b83e PA |
14528 | struct thread_info *tp = inferior_thread (); |
14529 | struct symtab_and_line sal; | |
14530 | CORE_ADDR pc = next_pc; | |
8181d85f | 14531 | |
34b7e8a6 PA |
14532 | if (tp->control.single_step_breakpoints == NULL) |
14533 | { | |
14534 | tp->control.single_step_breakpoints | |
5d5658a1 | 14535 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14536 | } |
8181d85f | 14537 | |
7c16b83e PA |
14538 | sal = find_pc_line (pc, 0); |
14539 | sal.pc = pc; | |
14540 | sal.section = find_pc_overlay (pc); | |
14541 | sal.explicit_pc = 1; | |
34b7e8a6 | 14542 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14543 | |
7c16b83e | 14544 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14545 | } |
14546 | ||
93f9a11f YQ |
14547 | /* Insert single step breakpoints according to the current state. */ |
14548 | ||
14549 | int | |
14550 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14551 | { | |
f5ea389a | 14552 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14553 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14554 | |
f5ea389a | 14555 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14556 | |
a0ff9e1a | 14557 | if (!next_pcs.empty ()) |
93f9a11f | 14558 | { |
f5ea389a | 14559 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14560 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14561 | |
a0ff9e1a | 14562 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14563 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14564 | ||
93f9a11f YQ |
14565 | return 1; |
14566 | } | |
14567 | else | |
14568 | return 0; | |
14569 | } | |
14570 | ||
34b7e8a6 | 14571 | /* See breakpoint.h. */ |
f02253f1 HZ |
14572 | |
14573 | int | |
7c16b83e | 14574 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14575 | const address_space *aspace, |
7c16b83e | 14576 | CORE_ADDR pc) |
1aafd4da | 14577 | { |
7c16b83e | 14578 | struct bp_location *loc; |
1aafd4da | 14579 | |
7c16b83e PA |
14580 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14581 | if (loc->inserted | |
14582 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14583 | return 1; | |
1aafd4da | 14584 | |
7c16b83e | 14585 | return 0; |
ef370185 JB |
14586 | } |
14587 | ||
14588 | /* Check whether a software single-step breakpoint is inserted at | |
14589 | PC. */ | |
14590 | ||
14591 | int | |
accd0bcd | 14592 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14593 | CORE_ADDR pc) |
14594 | { | |
34b7e8a6 PA |
14595 | struct breakpoint *bpt; |
14596 | ||
14597 | ALL_BREAKPOINTS (bpt) | |
14598 | { | |
14599 | if (bpt->type == bp_single_step | |
14600 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14601 | return 1; | |
14602 | } | |
14603 | return 0; | |
1aafd4da UW |
14604 | } |
14605 | ||
1042e4c0 SS |
14606 | /* Tracepoint-specific operations. */ |
14607 | ||
14608 | /* Set tracepoint count to NUM. */ | |
14609 | static void | |
14610 | set_tracepoint_count (int num) | |
14611 | { | |
14612 | tracepoint_count = num; | |
4fa62494 | 14613 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14614 | } |
14615 | ||
70221824 | 14616 | static void |
f2fc3015 | 14617 | trace_command (char *arg_in, int from_tty) |
1042e4c0 | 14618 | { |
f2fc3015 | 14619 | const char *arg = arg_in; |
55aa24fb | 14620 | struct breakpoint_ops *ops; |
55aa24fb | 14621 | |
ffc2605c TT |
14622 | event_location_up location = string_to_event_location (&arg, |
14623 | current_language); | |
5b56227b | 14624 | if (location != NULL |
ffc2605c | 14625 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14626 | ops = &tracepoint_probe_breakpoint_ops; |
14627 | else | |
14628 | ops = &tracepoint_breakpoint_ops; | |
14629 | ||
558a9d82 | 14630 | create_breakpoint (get_current_arch (), |
ffc2605c | 14631 | location.get (), |
f00aae0f | 14632 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14633 | 0 /* tempflag */, |
14634 | bp_tracepoint /* type_wanted */, | |
14635 | 0 /* Ignore count */, | |
14636 | pending_break_support, | |
14637 | ops, | |
14638 | from_tty, | |
14639 | 1 /* enabled */, | |
14640 | 0 /* internal */, 0); | |
1042e4c0 SS |
14641 | } |
14642 | ||
70221824 | 14643 | static void |
f2fc3015 | 14644 | ftrace_command (char *arg_in, int from_tty) |
7a697b8d | 14645 | { |
f2fc3015 | 14646 | const char *arg = arg_in; |
ffc2605c TT |
14647 | event_location_up location = string_to_event_location (&arg, |
14648 | current_language); | |
558a9d82 | 14649 | create_breakpoint (get_current_arch (), |
ffc2605c | 14650 | location.get (), |
f00aae0f | 14651 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14652 | 0 /* tempflag */, |
14653 | bp_fast_tracepoint /* type_wanted */, | |
14654 | 0 /* Ignore count */, | |
14655 | pending_break_support, | |
14656 | &tracepoint_breakpoint_ops, | |
14657 | from_tty, | |
14658 | 1 /* enabled */, | |
14659 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14660 | } |
14661 | ||
14662 | /* strace command implementation. Creates a static tracepoint. */ | |
14663 | ||
70221824 | 14664 | static void |
f2fc3015 | 14665 | strace_command (char *arg_in, int from_tty) |
0fb4aa4b | 14666 | { |
f2fc3015 | 14667 | const char *arg = arg_in; |
983af33b | 14668 | struct breakpoint_ops *ops; |
ffc2605c | 14669 | event_location_up location; |
983af33b SDJ |
14670 | |
14671 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14672 | or with a normal static tracepoint. */ | |
61012eef | 14673 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14674 | { |
14675 | ops = &strace_marker_breakpoint_ops; | |
14676 | location = new_linespec_location (&arg); | |
14677 | } | |
983af33b | 14678 | else |
f00aae0f KS |
14679 | { |
14680 | ops = &tracepoint_breakpoint_ops; | |
14681 | location = string_to_event_location (&arg, current_language); | |
14682 | } | |
983af33b | 14683 | |
558a9d82 | 14684 | create_breakpoint (get_current_arch (), |
ffc2605c | 14685 | location.get (), |
f00aae0f | 14686 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14687 | 0 /* tempflag */, |
14688 | bp_static_tracepoint /* type_wanted */, | |
14689 | 0 /* Ignore count */, | |
14690 | pending_break_support, | |
14691 | ops, | |
14692 | from_tty, | |
14693 | 1 /* enabled */, | |
14694 | 0 /* internal */, 0); | |
7a697b8d SS |
14695 | } |
14696 | ||
409873ef SS |
14697 | /* Set up a fake reader function that gets command lines from a linked |
14698 | list that was acquired during tracepoint uploading. */ | |
14699 | ||
14700 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14701 | static int next_cmd; |
409873ef SS |
14702 | |
14703 | static char * | |
14704 | read_uploaded_action (void) | |
14705 | { | |
14706 | char *rslt; | |
14707 | ||
3149d8c1 | 14708 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14709 | |
3149d8c1 | 14710 | next_cmd++; |
409873ef SS |
14711 | |
14712 | return rslt; | |
14713 | } | |
14714 | ||
00bf0b85 SS |
14715 | /* Given information about a tracepoint as recorded on a target (which |
14716 | can be either a live system or a trace file), attempt to create an | |
14717 | equivalent GDB tracepoint. This is not a reliable process, since | |
14718 | the target does not necessarily have all the information used when | |
14719 | the tracepoint was originally defined. */ | |
14720 | ||
d9b3f62e | 14721 | struct tracepoint * |
00bf0b85 | 14722 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14723 | { |
f2fc3015 TT |
14724 | const char *addr_str; |
14725 | char small_buf[100]; | |
d9b3f62e | 14726 | struct tracepoint *tp; |
fd9b8c24 | 14727 | |
409873ef SS |
14728 | if (utp->at_string) |
14729 | addr_str = utp->at_string; | |
14730 | else | |
14731 | { | |
14732 | /* In the absence of a source location, fall back to raw | |
14733 | address. Since there is no way to confirm that the address | |
14734 | means the same thing as when the trace was started, warn the | |
14735 | user. */ | |
3e43a32a MS |
14736 | warning (_("Uploaded tracepoint %d has no " |
14737 | "source location, using raw address"), | |
409873ef | 14738 | utp->number); |
8c042590 | 14739 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14740 | addr_str = small_buf; |
14741 | } | |
14742 | ||
14743 | /* There's not much we can do with a sequence of bytecodes. */ | |
14744 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14745 | warning (_("Uploaded tracepoint %d condition " |
14746 | "has no source form, ignoring it"), | |
409873ef | 14747 | utp->number); |
d5551862 | 14748 | |
ffc2605c TT |
14749 | event_location_up location = string_to_event_location (&addr_str, |
14750 | current_language); | |
8cdf0e15 | 14751 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14752 | location.get (), |
f00aae0f | 14753 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14754 | 0 /* parse cond/thread */, |
8cdf0e15 | 14755 | 0 /* tempflag */, |
0fb4aa4b | 14756 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14757 | 0 /* Ignore count */, |
14758 | pending_break_support, | |
348d480f | 14759 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14760 | 0 /* from_tty */, |
84f4c1fe | 14761 | utp->enabled /* enabled */, |
44f238bb PA |
14762 | 0 /* internal */, |
14763 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14764 | return NULL; |
fd9b8c24 | 14765 | |
409873ef | 14766 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14767 | tp = get_tracepoint (tracepoint_count); |
14768 | gdb_assert (tp != NULL); | |
d5551862 | 14769 | |
00bf0b85 SS |
14770 | if (utp->pass > 0) |
14771 | { | |
8c042590 | 14772 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14773 | tp->number); |
00bf0b85 | 14774 | |
409873ef | 14775 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14776 | } |
14777 | ||
409873ef SS |
14778 | /* If we have uploaded versions of the original commands, set up a |
14779 | special-purpose "reader" function and call the usual command line | |
14780 | reader, then pass the result to the breakpoint command-setting | |
14781 | function. */ | |
3149d8c1 | 14782 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14783 | { |
93921405 | 14784 | command_line_up cmd_list; |
00bf0b85 | 14785 | |
409873ef | 14786 | this_utp = utp; |
3149d8c1 | 14787 | next_cmd = 0; |
d5551862 | 14788 | |
409873ef SS |
14789 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14790 | ||
c1fc2657 | 14791 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14792 | } |
3149d8c1 SS |
14793 | else if (!VEC_empty (char_ptr, utp->actions) |
14794 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14795 | warning (_("Uploaded tracepoint %d actions " |
14796 | "have no source form, ignoring them"), | |
409873ef | 14797 | utp->number); |
00bf0b85 | 14798 | |
f196051f | 14799 | /* Copy any status information that might be available. */ |
c1fc2657 | 14800 | tp->hit_count = utp->hit_count; |
f196051f SS |
14801 | tp->traceframe_usage = utp->traceframe_usage; |
14802 | ||
00bf0b85 | 14803 | return tp; |
d9b3f62e | 14804 | } |
00bf0b85 | 14805 | |
1042e4c0 SS |
14806 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14807 | omitted. */ | |
14808 | ||
14809 | static void | |
11db9430 | 14810 | info_tracepoints_command (char *args, int from_tty) |
1042e4c0 | 14811 | { |
79a45e25 | 14812 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14813 | int num_printed; |
1042e4c0 | 14814 | |
e5a67952 | 14815 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14816 | |
14817 | if (num_printed == 0) | |
1042e4c0 | 14818 | { |
e5a67952 | 14819 | if (args == NULL || *args == '\0') |
112e8700 | 14820 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14821 | else |
112e8700 | 14822 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14823 | } |
ad443146 SS |
14824 | |
14825 | default_collect_info (); | |
1042e4c0 SS |
14826 | } |
14827 | ||
4a64f543 | 14828 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14829 | Not supported by all targets. */ |
14830 | static void | |
14831 | enable_trace_command (char *args, int from_tty) | |
14832 | { | |
14833 | enable_command (args, from_tty); | |
14834 | } | |
14835 | ||
4a64f543 | 14836 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14837 | Not supported by all targets. */ |
14838 | static void | |
14839 | disable_trace_command (char *args, int from_tty) | |
14840 | { | |
14841 | disable_command (args, from_tty); | |
14842 | } | |
14843 | ||
4a64f543 | 14844 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14845 | static void |
4495129a | 14846 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14847 | { |
35df4500 | 14848 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14849 | |
14850 | dont_repeat (); | |
14851 | ||
14852 | if (arg == 0) | |
14853 | { | |
14854 | int breaks_to_delete = 0; | |
14855 | ||
14856 | /* Delete all breakpoints if no argument. | |
14857 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14858 | have to be deleted with an explicit breakpoint number |
14859 | argument. */ | |
1042e4c0 | 14860 | ALL_TRACEPOINTS (b) |
46c6471b | 14861 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14862 | { |
14863 | breaks_to_delete = 1; | |
14864 | break; | |
14865 | } | |
1042e4c0 SS |
14866 | |
14867 | /* Ask user only if there are some breakpoints to delete. */ | |
14868 | if (!from_tty | |
14869 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14870 | { | |
35df4500 | 14871 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14872 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14873 | delete_breakpoint (b); |
1042e4c0 SS |
14874 | } |
14875 | } | |
14876 | else | |
48649e1b TT |
14877 | map_breakpoint_numbers |
14878 | (arg, [&] (breakpoint *b) | |
14879 | { | |
14880 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14881 | }); | |
1042e4c0 SS |
14882 | } |
14883 | ||
197f0a60 TT |
14884 | /* Helper function for trace_pass_command. */ |
14885 | ||
14886 | static void | |
d9b3f62e | 14887 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14888 | { |
d9b3f62e | 14889 | tp->pass_count = count; |
c1fc2657 | 14890 | observer_notify_breakpoint_modified (tp); |
197f0a60 TT |
14891 | if (from_tty) |
14892 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14893 | tp->number, count); |
197f0a60 TT |
14894 | } |
14895 | ||
1042e4c0 SS |
14896 | /* Set passcount for tracepoint. |
14897 | ||
14898 | First command argument is passcount, second is tracepoint number. | |
14899 | If tracepoint number omitted, apply to most recently defined. | |
14900 | Also accepts special argument "all". */ | |
14901 | ||
14902 | static void | |
14903 | trace_pass_command (char *args, int from_tty) | |
14904 | { | |
d9b3f62e | 14905 | struct tracepoint *t1; |
1042e4c0 | 14906 | unsigned int count; |
1042e4c0 SS |
14907 | |
14908 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14909 | error (_("passcount command requires an " |
14910 | "argument (count + optional TP num)")); | |
1042e4c0 | 14911 | |
4a64f543 | 14912 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14913 | |
529480d0 | 14914 | args = skip_spaces (args); |
1042e4c0 SS |
14915 | if (*args && strncasecmp (args, "all", 3) == 0) |
14916 | { | |
d9b3f62e PA |
14917 | struct breakpoint *b; |
14918 | ||
1042e4c0 | 14919 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14920 | if (*args) |
14921 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14922 | |
d9b3f62e | 14923 | ALL_TRACEPOINTS (b) |
197f0a60 | 14924 | { |
d9b3f62e | 14925 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14926 | trace_pass_set_count (t1, count, from_tty); |
14927 | } | |
14928 | } | |
14929 | else if (*args == '\0') | |
1042e4c0 | 14930 | { |
5fa1d40e | 14931 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14932 | if (t1) |
197f0a60 TT |
14933 | trace_pass_set_count (t1, count, from_tty); |
14934 | } | |
14935 | else | |
14936 | { | |
bfd28288 PA |
14937 | number_or_range_parser parser (args); |
14938 | while (!parser.finished ()) | |
1042e4c0 | 14939 | { |
bfd28288 | 14940 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14941 | if (t1) |
14942 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14943 | } |
14944 | } | |
1042e4c0 SS |
14945 | } |
14946 | ||
d9b3f62e | 14947 | struct tracepoint * |
1042e4c0 SS |
14948 | get_tracepoint (int num) |
14949 | { | |
14950 | struct breakpoint *t; | |
14951 | ||
14952 | ALL_TRACEPOINTS (t) | |
14953 | if (t->number == num) | |
d9b3f62e | 14954 | return (struct tracepoint *) t; |
1042e4c0 SS |
14955 | |
14956 | return NULL; | |
14957 | } | |
14958 | ||
d5551862 SS |
14959 | /* Find the tracepoint with the given target-side number (which may be |
14960 | different from the tracepoint number after disconnecting and | |
14961 | reconnecting). */ | |
14962 | ||
d9b3f62e | 14963 | struct tracepoint * |
d5551862 SS |
14964 | get_tracepoint_by_number_on_target (int num) |
14965 | { | |
d9b3f62e | 14966 | struct breakpoint *b; |
d5551862 | 14967 | |
d9b3f62e PA |
14968 | ALL_TRACEPOINTS (b) |
14969 | { | |
14970 | struct tracepoint *t = (struct tracepoint *) b; | |
14971 | ||
14972 | if (t->number_on_target == num) | |
14973 | return t; | |
14974 | } | |
d5551862 SS |
14975 | |
14976 | return NULL; | |
14977 | } | |
14978 | ||
1042e4c0 | 14979 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14980 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14981 | If the argument is missing, the most recent tracepoint |
14982 | (tracepoint_count) is returned. */ | |
14983 | ||
d9b3f62e | 14984 | struct tracepoint * |
197f0a60 | 14985 | get_tracepoint_by_number (char **arg, |
bfd28288 | 14986 | number_or_range_parser *parser) |
1042e4c0 | 14987 | { |
1042e4c0 SS |
14988 | struct breakpoint *t; |
14989 | int tpnum; | |
14990 | char *instring = arg == NULL ? NULL : *arg; | |
14991 | ||
bfd28288 | 14992 | if (parser != NULL) |
197f0a60 | 14993 | { |
bfd28288 PA |
14994 | gdb_assert (!parser->finished ()); |
14995 | tpnum = parser->get_number (); | |
197f0a60 TT |
14996 | } |
14997 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14998 | tpnum = tracepoint_count; |
1042e4c0 | 14999 | else |
197f0a60 | 15000 | tpnum = get_number (arg); |
1042e4c0 SS |
15001 | |
15002 | if (tpnum <= 0) | |
15003 | { | |
15004 | if (instring && *instring) | |
15005 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15006 | instring); | |
15007 | else | |
5fa1d40e | 15008 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15009 | return NULL; |
15010 | } | |
15011 | ||
15012 | ALL_TRACEPOINTS (t) | |
15013 | if (t->number == tpnum) | |
15014 | { | |
d9b3f62e | 15015 | return (struct tracepoint *) t; |
1042e4c0 SS |
15016 | } |
15017 | ||
1042e4c0 SS |
15018 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15019 | return NULL; | |
15020 | } | |
15021 | ||
d9b3f62e PA |
15022 | void |
15023 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15024 | { | |
15025 | if (b->thread != -1) | |
15026 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15027 | ||
15028 | if (b->task != 0) | |
15029 | fprintf_unfiltered (fp, " task %d", b->task); | |
15030 | ||
15031 | fprintf_unfiltered (fp, "\n"); | |
15032 | } | |
15033 | ||
6149aea9 PA |
15034 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15035 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15036 | on each breakpoint and only include the ones for which it returns | |
15037 | non-zero. */ | |
15038 | ||
1042e4c0 | 15039 | static void |
4495129a | 15040 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15041 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15042 | { |
15043 | struct breakpoint *tp; | |
6149aea9 | 15044 | int any = 0; |
6149aea9 | 15045 | int extra_trace_bits = 0; |
1042e4c0 | 15046 | |
6149aea9 PA |
15047 | if (filename == 0 || *filename == 0) |
15048 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15049 | |
15050 | /* See if we have anything to save. */ | |
6149aea9 | 15051 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15052 | { |
6149aea9 | 15053 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15054 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15055 | continue; |
15056 | ||
15057 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15058 | if (filter && !filter (tp)) | |
15059 | continue; | |
15060 | ||
15061 | any = 1; | |
15062 | ||
15063 | if (is_tracepoint (tp)) | |
15064 | { | |
15065 | extra_trace_bits = 1; | |
15066 | ||
15067 | /* We can stop searching. */ | |
15068 | break; | |
15069 | } | |
1042e4c0 | 15070 | } |
6149aea9 PA |
15071 | |
15072 | if (!any) | |
1042e4c0 | 15073 | { |
6149aea9 | 15074 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15075 | return; |
15076 | } | |
15077 | ||
ee0c3293 | 15078 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15079 | |
15080 | stdio_file fp; | |
15081 | ||
ee0c3293 | 15082 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15083 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15084 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15085 | |
6149aea9 | 15086 | if (extra_trace_bits) |
d7e74731 | 15087 | save_trace_state_variables (&fp); |
8bf6485c | 15088 | |
6149aea9 | 15089 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15090 | { |
6149aea9 | 15091 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15092 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15093 | continue; |
8bf6485c | 15094 | |
6149aea9 PA |
15095 | /* If we have a filter, only save the breakpoints it accepts. */ |
15096 | if (filter && !filter (tp)) | |
15097 | continue; | |
15098 | ||
d7e74731 | 15099 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15100 | |
6149aea9 PA |
15101 | /* Note, we can't rely on tp->number for anything, as we can't |
15102 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15103 | instead. */ | |
15104 | ||
15105 | if (tp->cond_string) | |
d7e74731 | 15106 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15107 | |
15108 | if (tp->ignore_count) | |
d7e74731 | 15109 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15110 | |
2d9442cc | 15111 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15112 | { |
d7e74731 | 15113 | fp.puts (" commands\n"); |
a7bdde9e | 15114 | |
d7e74731 | 15115 | current_uiout->redirect (&fp); |
492d29ea | 15116 | TRY |
1042e4c0 | 15117 | { |
d1b0a7bf | 15118 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15119 | } |
492d29ea PA |
15120 | CATCH (ex, RETURN_MASK_ALL) |
15121 | { | |
112e8700 | 15122 | current_uiout->redirect (NULL); |
492d29ea PA |
15123 | throw_exception (ex); |
15124 | } | |
15125 | END_CATCH | |
1042e4c0 | 15126 | |
112e8700 | 15127 | current_uiout->redirect (NULL); |
d7e74731 | 15128 | fp.puts (" end\n"); |
1042e4c0 | 15129 | } |
6149aea9 PA |
15130 | |
15131 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15132 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15133 | |
15134 | /* If this is a multi-location breakpoint, check if the locations | |
15135 | should be individually disabled. Watchpoint locations are | |
15136 | special, and not user visible. */ | |
15137 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15138 | { | |
15139 | struct bp_location *loc; | |
15140 | int n = 1; | |
15141 | ||
15142 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15143 | if (!loc->enabled) | |
d7e74731 | 15144 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15145 | } |
1042e4c0 | 15146 | } |
8bf6485c | 15147 | |
6149aea9 | 15148 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15149 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15150 | |
1042e4c0 | 15151 | if (from_tty) |
ee0c3293 | 15152 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15153 | } |
15154 | ||
15155 | /* The `save breakpoints' command. */ | |
15156 | ||
15157 | static void | |
4495129a | 15158 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15159 | { |
15160 | save_breakpoints (args, from_tty, NULL); | |
15161 | } | |
15162 | ||
15163 | /* The `save tracepoints' command. */ | |
15164 | ||
15165 | static void | |
4495129a | 15166 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15167 | { |
15168 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15169 | } |
15170 | ||
15171 | /* Create a vector of all tracepoints. */ | |
15172 | ||
15173 | VEC(breakpoint_p) * | |
eeae04df | 15174 | all_tracepoints (void) |
1042e4c0 SS |
15175 | { |
15176 | VEC(breakpoint_p) *tp_vec = 0; | |
15177 | struct breakpoint *tp; | |
15178 | ||
15179 | ALL_TRACEPOINTS (tp) | |
15180 | { | |
15181 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15182 | } | |
15183 | ||
15184 | return tp_vec; | |
15185 | } | |
15186 | ||
c906108c | 15187 | \f |
629500fa KS |
15188 | /* This help string is used to consolidate all the help string for specifying |
15189 | locations used by several commands. */ | |
15190 | ||
15191 | #define LOCATION_HELP_STRING \ | |
15192 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15193 | source filename, function name, label name, and line number.\n\ | |
15194 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15195 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15196 | \"factorial.c:fact:the_top\".\n\ | |
15197 | \n\ | |
15198 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15199 | program. Example: To specify the fourth byte past the start function\n\ | |
15200 | \"main\", use \"*main + 4\".\n\ | |
15201 | \n\ | |
15202 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15203 | syntax to specify location parameters.\n\ | |
15204 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15205 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
15206 | -function fact -label the_top\".\n" | |
15207 | ||
4a64f543 MS |
15208 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15209 | commands. It is defined as a macro to prevent duplication. | |
15210 | COMMAND should be a string constant containing the name of the | |
15211 | command. */ | |
629500fa | 15212 | |
31e2b00f | 15213 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15214 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15215 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15216 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15217 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15218 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15219 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15220 | below.\n\ | |
15221 | \n\ | |
dc10affe PA |
15222 | With no LOCATION, uses current execution address of the selected\n\ |
15223 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15224 | \n\ |
15225 | THREADNUM is the number from \"info threads\".\n\ | |
15226 | CONDITION is a boolean expression.\n\ | |
629500fa | 15227 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15228 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15229 | conditions are different.\n\ | |
31e2b00f AS |
15230 | \n\ |
15231 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15232 | ||
44feb3ce TT |
15233 | /* List of subcommands for "catch". */ |
15234 | static struct cmd_list_element *catch_cmdlist; | |
15235 | ||
15236 | /* List of subcommands for "tcatch". */ | |
15237 | static struct cmd_list_element *tcatch_cmdlist; | |
15238 | ||
9ac4176b | 15239 | void |
a121b7c1 | 15240 | add_catch_command (const char *name, const char *docstring, |
82ae6c8d | 15241 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15242 | completer_ftype *completer, |
44feb3ce TT |
15243 | void *user_data_catch, |
15244 | void *user_data_tcatch) | |
15245 | { | |
15246 | struct cmd_list_element *command; | |
15247 | ||
0450cc4c | 15248 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15249 | &catch_cmdlist); |
15250 | set_cmd_sfunc (command, sfunc); | |
15251 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15252 | set_cmd_completer (command, completer); |
44feb3ce | 15253 | |
0450cc4c | 15254 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15255 | &tcatch_cmdlist); |
15256 | set_cmd_sfunc (command, sfunc); | |
15257 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15258 | set_cmd_completer (command, completer); |
44feb3ce TT |
15259 | } |
15260 | ||
6149aea9 | 15261 | static void |
981a3fb3 | 15262 | save_command (const char *arg, int from_tty) |
6149aea9 | 15263 | { |
3e43a32a MS |
15264 | printf_unfiltered (_("\"save\" must be followed by " |
15265 | "the name of a save subcommand.\n")); | |
635c7e8a | 15266 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15267 | } |
15268 | ||
84f4c1fe PM |
15269 | struct breakpoint * |
15270 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15271 | void *data) | |
15272 | { | |
35df4500 | 15273 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15274 | |
35df4500 | 15275 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15276 | { |
15277 | if ((*callback) (b, data)) | |
15278 | return b; | |
15279 | } | |
15280 | ||
15281 | return NULL; | |
15282 | } | |
15283 | ||
0574c78f GB |
15284 | /* Zero if any of the breakpoint's locations could be a location where |
15285 | functions have been inlined, nonzero otherwise. */ | |
15286 | ||
15287 | static int | |
15288 | is_non_inline_function (struct breakpoint *b) | |
15289 | { | |
15290 | /* The shared library event breakpoint is set on the address of a | |
15291 | non-inline function. */ | |
15292 | if (b->type == bp_shlib_event) | |
15293 | return 1; | |
15294 | ||
15295 | return 0; | |
15296 | } | |
15297 | ||
15298 | /* Nonzero if the specified PC cannot be a location where functions | |
15299 | have been inlined. */ | |
15300 | ||
15301 | int | |
accd0bcd | 15302 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15303 | const struct target_waitstatus *ws) |
0574c78f GB |
15304 | { |
15305 | struct breakpoint *b; | |
15306 | struct bp_location *bl; | |
15307 | ||
15308 | ALL_BREAKPOINTS (b) | |
15309 | { | |
15310 | if (!is_non_inline_function (b)) | |
15311 | continue; | |
15312 | ||
15313 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15314 | { | |
15315 | if (!bl->shlib_disabled | |
09ac7c10 | 15316 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15317 | return 1; |
15318 | } | |
15319 | } | |
15320 | ||
15321 | return 0; | |
15322 | } | |
15323 | ||
2f202fde JK |
15324 | /* Remove any references to OBJFILE which is going to be freed. */ |
15325 | ||
15326 | void | |
15327 | breakpoint_free_objfile (struct objfile *objfile) | |
15328 | { | |
15329 | struct bp_location **locp, *loc; | |
15330 | ||
15331 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15332 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15333 | loc->symtab = NULL; |
15334 | } | |
15335 | ||
2060206e PA |
15336 | void |
15337 | initialize_breakpoint_ops (void) | |
15338 | { | |
15339 | static int initialized = 0; | |
15340 | ||
15341 | struct breakpoint_ops *ops; | |
15342 | ||
15343 | if (initialized) | |
15344 | return; | |
15345 | initialized = 1; | |
15346 | ||
15347 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15348 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15349 | internal and momentary breakpoints, etc.). */ | |
15350 | ops = &bkpt_base_breakpoint_ops; | |
15351 | *ops = base_breakpoint_ops; | |
15352 | ops->re_set = bkpt_re_set; | |
15353 | ops->insert_location = bkpt_insert_location; | |
15354 | ops->remove_location = bkpt_remove_location; | |
15355 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15356 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15357 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15358 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15359 | |
15360 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15361 | ops = &bkpt_breakpoint_ops; | |
15362 | *ops = bkpt_base_breakpoint_ops; | |
15363 | ops->re_set = bkpt_re_set; | |
15364 | ops->resources_needed = bkpt_resources_needed; | |
15365 | ops->print_it = bkpt_print_it; | |
15366 | ops->print_mention = bkpt_print_mention; | |
15367 | ops->print_recreate = bkpt_print_recreate; | |
15368 | ||
15369 | /* Ranged breakpoints. */ | |
15370 | ops = &ranged_breakpoint_ops; | |
15371 | *ops = bkpt_breakpoint_ops; | |
15372 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15373 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15374 | ops->print_it = print_it_ranged_breakpoint; | |
15375 | ops->print_one = print_one_ranged_breakpoint; | |
15376 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15377 | ops->print_mention = print_mention_ranged_breakpoint; | |
15378 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15379 | ||
15380 | /* Internal breakpoints. */ | |
15381 | ops = &internal_breakpoint_ops; | |
15382 | *ops = bkpt_base_breakpoint_ops; | |
15383 | ops->re_set = internal_bkpt_re_set; | |
15384 | ops->check_status = internal_bkpt_check_status; | |
15385 | ops->print_it = internal_bkpt_print_it; | |
15386 | ops->print_mention = internal_bkpt_print_mention; | |
15387 | ||
15388 | /* Momentary breakpoints. */ | |
15389 | ops = &momentary_breakpoint_ops; | |
15390 | *ops = bkpt_base_breakpoint_ops; | |
15391 | ops->re_set = momentary_bkpt_re_set; | |
15392 | ops->check_status = momentary_bkpt_check_status; | |
15393 | ops->print_it = momentary_bkpt_print_it; | |
15394 | ops->print_mention = momentary_bkpt_print_mention; | |
15395 | ||
55aa24fb SDJ |
15396 | /* Probe breakpoints. */ |
15397 | ops = &bkpt_probe_breakpoint_ops; | |
15398 | *ops = bkpt_breakpoint_ops; | |
15399 | ops->insert_location = bkpt_probe_insert_location; | |
15400 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15401 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15402 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15403 | |
2060206e PA |
15404 | /* Watchpoints. */ |
15405 | ops = &watchpoint_breakpoint_ops; | |
15406 | *ops = base_breakpoint_ops; | |
15407 | ops->re_set = re_set_watchpoint; | |
15408 | ops->insert_location = insert_watchpoint; | |
15409 | ops->remove_location = remove_watchpoint; | |
15410 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15411 | ops->check_status = check_status_watchpoint; | |
15412 | ops->resources_needed = resources_needed_watchpoint; | |
15413 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15414 | ops->print_it = print_it_watchpoint; | |
15415 | ops->print_mention = print_mention_watchpoint; | |
15416 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15417 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15418 | |
15419 | /* Masked watchpoints. */ | |
15420 | ops = &masked_watchpoint_breakpoint_ops; | |
15421 | *ops = watchpoint_breakpoint_ops; | |
15422 | ops->insert_location = insert_masked_watchpoint; | |
15423 | ops->remove_location = remove_masked_watchpoint; | |
15424 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15425 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15426 | ops->print_it = print_it_masked_watchpoint; | |
15427 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15428 | ops->print_mention = print_mention_masked_watchpoint; | |
15429 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15430 | ||
15431 | /* Tracepoints. */ | |
15432 | ops = &tracepoint_breakpoint_ops; | |
15433 | *ops = base_breakpoint_ops; | |
15434 | ops->re_set = tracepoint_re_set; | |
15435 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15436 | ops->print_one_detail = tracepoint_print_one_detail; | |
15437 | ops->print_mention = tracepoint_print_mention; | |
15438 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15439 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15440 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15441 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15442 | |
55aa24fb SDJ |
15443 | /* Probe tracepoints. */ |
15444 | ops = &tracepoint_probe_breakpoint_ops; | |
15445 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15446 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15447 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15448 | |
983af33b SDJ |
15449 | /* Static tracepoints with marker (`-m'). */ |
15450 | ops = &strace_marker_breakpoint_ops; | |
15451 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15452 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15453 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15454 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15455 | |
15456 | /* Fork catchpoints. */ | |
15457 | ops = &catch_fork_breakpoint_ops; | |
15458 | *ops = base_breakpoint_ops; | |
15459 | ops->insert_location = insert_catch_fork; | |
15460 | ops->remove_location = remove_catch_fork; | |
15461 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15462 | ops->print_it = print_it_catch_fork; | |
15463 | ops->print_one = print_one_catch_fork; | |
15464 | ops->print_mention = print_mention_catch_fork; | |
15465 | ops->print_recreate = print_recreate_catch_fork; | |
15466 | ||
15467 | /* Vfork catchpoints. */ | |
15468 | ops = &catch_vfork_breakpoint_ops; | |
15469 | *ops = base_breakpoint_ops; | |
15470 | ops->insert_location = insert_catch_vfork; | |
15471 | ops->remove_location = remove_catch_vfork; | |
15472 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15473 | ops->print_it = print_it_catch_vfork; | |
15474 | ops->print_one = print_one_catch_vfork; | |
15475 | ops->print_mention = print_mention_catch_vfork; | |
15476 | ops->print_recreate = print_recreate_catch_vfork; | |
15477 | ||
15478 | /* Exec catchpoints. */ | |
15479 | ops = &catch_exec_breakpoint_ops; | |
15480 | *ops = base_breakpoint_ops; | |
2060206e PA |
15481 | ops->insert_location = insert_catch_exec; |
15482 | ops->remove_location = remove_catch_exec; | |
15483 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15484 | ops->print_it = print_it_catch_exec; | |
15485 | ops->print_one = print_one_catch_exec; | |
15486 | ops->print_mention = print_mention_catch_exec; | |
15487 | ops->print_recreate = print_recreate_catch_exec; | |
15488 | ||
edcc5120 TT |
15489 | /* Solib-related catchpoints. */ |
15490 | ops = &catch_solib_breakpoint_ops; | |
15491 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15492 | ops->insert_location = insert_catch_solib; |
15493 | ops->remove_location = remove_catch_solib; | |
15494 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15495 | ops->check_status = check_status_catch_solib; | |
15496 | ops->print_it = print_it_catch_solib; | |
15497 | ops->print_one = print_one_catch_solib; | |
15498 | ops->print_mention = print_mention_catch_solib; | |
15499 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15500 | |
15501 | ops = &dprintf_breakpoint_ops; | |
15502 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15503 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15504 | ops->resources_needed = bkpt_resources_needed; |
15505 | ops->print_it = bkpt_print_it; | |
15506 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15507 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15508 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15509 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15510 | } |
15511 | ||
8bfd80db YQ |
15512 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15513 | ||
15514 | static struct cmd_list_element *enablebreaklist = NULL; | |
15515 | ||
c906108c | 15516 | void |
fba45db2 | 15517 | _initialize_breakpoint (void) |
c906108c SS |
15518 | { |
15519 | struct cmd_list_element *c; | |
15520 | ||
2060206e PA |
15521 | initialize_breakpoint_ops (); |
15522 | ||
84acb35a | 15523 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15524 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15525 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15526 | |
55aa24fb | 15527 | breakpoint_objfile_key |
43dce439 | 15528 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_objfile_data); |
17450429 | 15529 | |
c906108c SS |
15530 | breakpoint_chain = 0; |
15531 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15532 | before a breakpoint is set. */ | |
15533 | breakpoint_count = 0; | |
15534 | ||
1042e4c0 SS |
15535 | tracepoint_count = 0; |
15536 | ||
1bedd215 AC |
15537 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15538 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15539 | Usage is `ignore N COUNT'.")); | |
c906108c | 15540 | |
1bedd215 | 15541 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15542 | Set commands to be executed when the given breakpoints are hit.\n\ |
15543 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15544 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15545 | (e.g. `5-7').\n\ | |
c906108c SS |
15546 | With no argument, the targeted breakpoint is the last one set.\n\ |
15547 | The commands themselves follow starting on the next line.\n\ | |
15548 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15549 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15550 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15551 | |
d55637df | 15552 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15553 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15554 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15555 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15556 | set_cmd_completer (c, condition_completer); |
c906108c | 15557 | |
1bedd215 | 15558 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15559 | Set a temporary breakpoint.\n\ |
c906108c SS |
15560 | Like \"break\" except the breakpoint is only temporary,\n\ |
15561 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15562 | by using \"enable delete\" on the breakpoint number.\n\ |
15563 | \n" | |
15564 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15565 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15566 | |
1bedd215 | 15567 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15568 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15569 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15570 | some target hardware may not have this support.\n\ |
15571 | \n" | |
15572 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15573 | set_cmd_completer (c, location_completer); |
c906108c | 15574 | |
1bedd215 | 15575 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15576 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15577 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15578 | so it will be deleted when hit.\n\ |
15579 | \n" | |
15580 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15581 | set_cmd_completer (c, location_completer); |
c906108c | 15582 | |
1bedd215 AC |
15583 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15584 | Enable some breakpoints.\n\ | |
c906108c SS |
15585 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15586 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15587 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15588 | With a subcommand you can enable temporarily."), |
c906108c | 15589 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15590 | |
15591 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15592 | ||
84951ab5 | 15593 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15594 | Enable some breakpoints.\n\ |
c906108c SS |
15595 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15596 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15597 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15598 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15599 | |
1a966eab AC |
15600 | add_cmd ("once", no_class, enable_once_command, _("\ |
15601 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15602 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15603 | &enablebreaklist); |
15604 | ||
1a966eab AC |
15605 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15606 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15607 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15608 | &enablebreaklist); |
15609 | ||
816338b5 SS |
15610 | add_cmd ("count", no_class, enable_count_command, _("\ |
15611 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15612 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15613 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15614 | &enablebreaklist); | |
15615 | ||
1a966eab AC |
15616 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15617 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15618 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15619 | &enablelist); |
15620 | ||
1a966eab AC |
15621 | add_cmd ("once", no_class, enable_once_command, _("\ |
15622 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15623 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15624 | &enablelist); |
15625 | ||
15626 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15627 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15628 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15629 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15630 | &enablelist); |
15631 | ||
1bedd215 AC |
15632 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15633 | Disable some breakpoints.\n\ | |
c906108c SS |
15634 | Arguments are breakpoint numbers with spaces in between.\n\ |
15635 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15636 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15637 | &disablelist, "disable ", 1, &cmdlist); |
15638 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15639 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15640 | |
1a966eab AC |
15641 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15642 | Disable some breakpoints.\n\ | |
c906108c SS |
15643 | Arguments are breakpoint numbers with spaces in between.\n\ |
15644 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15645 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15646 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15647 | &disablelist); |
15648 | ||
1bedd215 AC |
15649 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15650 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15651 | Arguments are breakpoint numbers with spaces in between.\n\ |
15652 | To delete all breakpoints, give no argument.\n\ | |
15653 | \n\ | |
15654 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15655 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15656 | &deletelist, "delete ", 1, &cmdlist); |
15657 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15658 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15659 | |
1a966eab AC |
15660 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15661 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15662 | Arguments are breakpoint numbers with spaces in between.\n\ |
15663 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15664 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15665 | &deletelist); |
15666 | ||
1bedd215 | 15667 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15668 | Clear breakpoint at specified location.\n\ |
15669 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15670 | \n\ |
15671 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15672 | is executing in.\n" |
15673 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15674 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15675 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15676 | |
1bedd215 | 15677 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15678 | Set breakpoint at specified location.\n" |
31e2b00f | 15679 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15680 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15681 | |
c906108c SS |
15682 | add_com_alias ("b", "break", class_run, 1); |
15683 | add_com_alias ("br", "break", class_run, 1); | |
15684 | add_com_alias ("bre", "break", class_run, 1); | |
15685 | add_com_alias ("brea", "break", class_run, 1); | |
15686 | ||
c906108c SS |
15687 | if (dbx_commands) |
15688 | { | |
1bedd215 AC |
15689 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15690 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15691 | &stoplist, "stop ", 1, &cmdlist); |
15692 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15693 | _("Break in function or address."), &stoplist); |
c5aa993b | 15694 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15695 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15696 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15697 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15698 | The \"Type\" column indicates one of:\n\ |
15699 | \tbreakpoint - normal breakpoint\n\ | |
15700 | \twatchpoint - watchpoint\n\ | |
15701 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15702 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15703 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15704 | address and file/line number respectively.\n\ |
15705 | \n\ | |
15706 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15707 | are set to the address of the last breakpoint listed unless the command\n\ |
15708 | is prefixed with \"server \".\n\n\ | |
c906108c | 15709 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15710 | breakpoint set.")); |
c906108c SS |
15711 | } |
15712 | ||
11db9430 | 15713 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15714 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15715 | The \"Type\" column indicates one of:\n\ |
15716 | \tbreakpoint - normal breakpoint\n\ | |
15717 | \twatchpoint - watchpoint\n\ | |
15718 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15719 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15720 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15721 | address and file/line number respectively.\n\ |
15722 | \n\ | |
15723 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15724 | are set to the address of the last breakpoint listed unless the command\n\ |
15725 | is prefixed with \"server \".\n\n\ | |
c906108c | 15726 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15727 | breakpoint set.")); |
c906108c | 15728 | |
6b04bdb7 MS |
15729 | add_info_alias ("b", "breakpoints", 1); |
15730 | ||
1a966eab AC |
15731 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15732 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15733 | The \"Type\" column indicates one of:\n\ |
15734 | \tbreakpoint - normal breakpoint\n\ | |
15735 | \twatchpoint - watchpoint\n\ | |
15736 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15737 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15738 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15739 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15740 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15741 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15742 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15743 | address and file/line number respectively.\n\ |
15744 | \n\ | |
15745 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15746 | are set to the address of the last breakpoint listed unless the command\n\ |
15747 | is prefixed with \"server \".\n\n\ | |
c906108c | 15748 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15749 | breakpoint set."), |
c906108c SS |
15750 | &maintenanceinfolist); |
15751 | ||
44feb3ce TT |
15752 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15753 | Set catchpoints to catch events."), | |
15754 | &catch_cmdlist, "catch ", | |
15755 | 0/*allow-unknown*/, &cmdlist); | |
15756 | ||
15757 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15758 | Set temporary catchpoints to catch events."), | |
15759 | &tcatch_cmdlist, "tcatch ", | |
15760 | 0/*allow-unknown*/, &cmdlist); | |
15761 | ||
44feb3ce TT |
15762 | add_catch_command ("fork", _("Catch calls to fork."), |
15763 | catch_fork_command_1, | |
a96d9b2e | 15764 | NULL, |
44feb3ce TT |
15765 | (void *) (uintptr_t) catch_fork_permanent, |
15766 | (void *) (uintptr_t) catch_fork_temporary); | |
15767 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15768 | catch_fork_command_1, | |
a96d9b2e | 15769 | NULL, |
44feb3ce TT |
15770 | (void *) (uintptr_t) catch_vfork_permanent, |
15771 | (void *) (uintptr_t) catch_vfork_temporary); | |
15772 | add_catch_command ("exec", _("Catch calls to exec."), | |
15773 | catch_exec_command_1, | |
a96d9b2e SDJ |
15774 | NULL, |
15775 | CATCH_PERMANENT, | |
15776 | CATCH_TEMPORARY); | |
edcc5120 TT |
15777 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15778 | Usage: catch load [REGEX]\n\ | |
15779 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15780 | catch_load_command_1, | |
15781 | NULL, | |
15782 | CATCH_PERMANENT, | |
15783 | CATCH_TEMPORARY); | |
15784 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15785 | Usage: catch unload [REGEX]\n\ | |
15786 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15787 | catch_unload_command_1, | |
15788 | NULL, | |
15789 | CATCH_PERMANENT, | |
15790 | CATCH_TEMPORARY); | |
c5aa993b | 15791 | |
1bedd215 AC |
15792 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15793 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15794 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15795 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15796 | an expression changes.\n\ |
15797 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15798 | the memory to which it refers.")); | |
65d12d83 | 15799 | set_cmd_completer (c, expression_completer); |
c906108c | 15800 | |
1bedd215 AC |
15801 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15802 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15803 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15804 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15805 | an expression is read.\n\ |
15806 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15807 | the memory to which it refers.")); | |
65d12d83 | 15808 | set_cmd_completer (c, expression_completer); |
c906108c | 15809 | |
1bedd215 AC |
15810 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15811 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15812 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15813 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15814 | an expression is either read or written.\n\ |
15815 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15816 | the memory to which it refers.")); | |
65d12d83 | 15817 | set_cmd_completer (c, expression_completer); |
c906108c | 15818 | |
11db9430 | 15819 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15820 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15821 | |
920d2a44 AC |
15822 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15823 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15824 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15825 | &can_use_hw_watchpoints, _("\ | |
15826 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15827 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15828 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15829 | such is available. (However, any hardware watchpoints that were\n\ | |
15830 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15831 | hardware.)"), |
15832 | NULL, | |
920d2a44 | 15833 | show_can_use_hw_watchpoints, |
85c07804 | 15834 | &setlist, &showlist); |
c906108c SS |
15835 | |
15836 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15837 | |
1042e4c0 SS |
15838 | /* Tracepoint manipulation commands. */ |
15839 | ||
15840 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15841 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15842 | \n" |
15843 | BREAK_ARGS_HELP ("trace") "\n\ | |
15844 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15845 | set_cmd_completer (c, location_completer); | |
15846 | ||
15847 | add_com_alias ("tp", "trace", class_alias, 0); | |
15848 | add_com_alias ("tr", "trace", class_alias, 1); | |
15849 | add_com_alias ("tra", "trace", class_alias, 1); | |
15850 | add_com_alias ("trac", "trace", class_alias, 1); | |
15851 | ||
7a697b8d | 15852 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15853 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15854 | \n" |
15855 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15856 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15857 | set_cmd_completer (c, location_completer); | |
15858 | ||
0fb4aa4b | 15859 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15860 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15861 | \n\ |
15862 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15863 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15864 | or -m MARKER_ID.\n\n\ | |
15865 | If a marker id is specified, probe the marker with that name. With\n\ | |
15866 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15867 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15868 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15869 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15870 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15871 | \n\ | |
15872 | CONDITION is a boolean expression.\n\ | |
629500fa | 15873 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15874 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15875 | conditions are different.\n\ | |
0fb4aa4b PA |
15876 | \n\ |
15877 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15878 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15879 | set_cmd_completer (c, location_completer); | |
15880 | ||
11db9430 | 15881 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15882 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15883 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15884 | last tracepoint set.")); | |
15885 | ||
15886 | add_info_alias ("tp", "tracepoints", 1); | |
15887 | ||
15888 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15889 | Delete specified tracepoints.\n\ | |
15890 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15891 | No argument means delete all tracepoints."), | |
15892 | &deletelist); | |
7e20dfcd | 15893 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15894 | |
15895 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15896 | Disable specified tracepoints.\n\ | |
15897 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15898 | No argument means disable all tracepoints."), | |
15899 | &disablelist); | |
15900 | deprecate_cmd (c, "disable"); | |
15901 | ||
15902 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15903 | Enable specified tracepoints.\n\ | |
15904 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15905 | No argument means enable all tracepoints."), | |
15906 | &enablelist); | |
15907 | deprecate_cmd (c, "enable"); | |
15908 | ||
15909 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15910 | Set the passcount for a tracepoint.\n\ | |
15911 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15912 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15913 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15914 | ||
6149aea9 PA |
15915 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15916 | _("Save breakpoint definitions as a script."), | |
15917 | &save_cmdlist, "save ", | |
15918 | 0/*allow-unknown*/, &cmdlist); | |
15919 | ||
15920 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15921 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15922 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15923 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15924 | session to restore them."), | |
15925 | &save_cmdlist); | |
15926 | set_cmd_completer (c, filename_completer); | |
15927 | ||
15928 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15929 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15930 | Use the 'source' command in another debug session to restore them."), |
15931 | &save_cmdlist); | |
1042e4c0 SS |
15932 | set_cmd_completer (c, filename_completer); |
15933 | ||
6149aea9 PA |
15934 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15935 | deprecate_cmd (c, "save tracepoints"); | |
15936 | ||
1bedd215 | 15937 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15938 | Breakpoint specific settings\n\ |
15939 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15940 | pending breakpoint behavior"), |
fa8d40ab JJ |
15941 | &breakpoint_set_cmdlist, "set breakpoint ", |
15942 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15943 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15944 | Breakpoint specific settings\n\ |
15945 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15946 | pending breakpoint behavior"), |
fa8d40ab JJ |
15947 | &breakpoint_show_cmdlist, "show breakpoint ", |
15948 | 0/*allow-unknown*/, &showlist); | |
15949 | ||
7915a72c AC |
15950 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15951 | &pending_break_support, _("\ | |
15952 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15953 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15954 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15955 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15956 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15957 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15958 | NULL, |
920d2a44 | 15959 | show_pending_break_support, |
6e1d7d6c AC |
15960 | &breakpoint_set_cmdlist, |
15961 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15962 | |
15963 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15964 | |
15965 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15966 | &automatic_hardware_breakpoints, _("\ | |
15967 | Set automatic usage of hardware breakpoints."), _("\ | |
15968 | Show automatic usage of hardware breakpoints."), _("\ | |
15969 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15970 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15971 | a warning will be emitted for such breakpoints."), | |
15972 | NULL, | |
15973 | show_automatic_hardware_breakpoints, | |
15974 | &breakpoint_set_cmdlist, | |
15975 | &breakpoint_show_cmdlist); | |
74960c60 | 15976 | |
a25a5a45 PA |
15977 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15978 | &always_inserted_mode, _("\ | |
74960c60 VP |
15979 | Set mode for inserting breakpoints."), _("\ |
15980 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15981 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15982 | they're created, kept inserted even when execution stops, and removed\n\ | |
15983 | only when the user deletes them. When this mode is off (the default),\n\ | |
15984 | breakpoints are inserted only when execution continues, and removed\n\ | |
15985 | when execution stops."), | |
72d0e2c5 YQ |
15986 | NULL, |
15987 | &show_always_inserted_mode, | |
15988 | &breakpoint_set_cmdlist, | |
15989 | &breakpoint_show_cmdlist); | |
f1310107 | 15990 | |
b775012e LM |
15991 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15992 | condition_evaluation_enums, | |
15993 | &condition_evaluation_mode_1, _("\ | |
15994 | Set mode of breakpoint condition evaluation."), _("\ | |
15995 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15996 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15997 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15998 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15999 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16000 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16001 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16002 | be set to \"gdb\""), | |
16003 | &set_condition_evaluation_mode, | |
16004 | &show_condition_evaluation_mode, | |
16005 | &breakpoint_set_cmdlist, | |
16006 | &breakpoint_show_cmdlist); | |
16007 | ||
f1310107 TJB |
16008 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16009 | Set a breakpoint for an address range.\n\ | |
16010 | break-range START-LOCATION, END-LOCATION\n\ | |
16011 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16012 | LINENUM, for that line in the current file,\n\ | |
16013 | FILE:LINENUM, for that line in that file,\n\ | |
16014 | +OFFSET, for that number of lines after the current line\n\ | |
16015 | or the start of the range\n\ | |
16016 | FUNCTION, for the first line in that function,\n\ | |
16017 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16018 | *ADDRESS, for the instruction at that address.\n\ | |
16019 | \n\ | |
16020 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16021 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16022 | range (including START-LOCATION and END-LOCATION).")); | |
16023 | ||
e7e0cddf | 16024 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16025 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16026 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16027 | location may be a linespec, explicit, or address location.\n" |
16028 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16029 | set_cmd_completer (c, location_completer); |
16030 | ||
16031 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16032 | dprintf_style_enums, &dprintf_style, _("\ | |
16033 | Set the style of usage for dynamic printf."), _("\ | |
16034 | Show the style of usage for dynamic printf."), _("\ | |
16035 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16036 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16037 | console, as with the \"printf\" command.\n\ | |
16038 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16039 | program; by default printf(), but you can choose a different function or\n\ | |
16040 | output stream by setting dprintf-function and dprintf-channel."), | |
16041 | update_dprintf_commands, NULL, | |
16042 | &setlist, &showlist); | |
16043 | ||
16044 | dprintf_function = xstrdup ("printf"); | |
16045 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16046 | &dprintf_function, _("\ | |
16047 | Set the function to use for dynamic printf"), _("\ | |
16048 | Show the function to use for dynamic printf"), NULL, | |
16049 | update_dprintf_commands, NULL, | |
16050 | &setlist, &showlist); | |
16051 | ||
16052 | dprintf_channel = xstrdup (""); | |
16053 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16054 | &dprintf_channel, _("\ | |
16055 | Set the channel to use for dynamic printf"), _("\ | |
16056 | Show the channel to use for dynamic printf"), NULL, | |
16057 | update_dprintf_commands, NULL, | |
16058 | &setlist, &showlist); | |
16059 | ||
d3ce09f5 SS |
16060 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16061 | &disconnected_dprintf, _("\ | |
16062 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16063 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16064 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16065 | even if GDB disconnects or detaches from the target."), | |
16066 | NULL, | |
16067 | NULL, | |
16068 | &setlist, &showlist); | |
16069 | ||
16070 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16071 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16072 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16073 | ||
765dc015 | 16074 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16075 | |
16076 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16077 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16078 | } |