Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
32d0add0 | 3 | Copyright (C) 1986-2015 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" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
765dc015 | 54 | #include "memattr.h" |
f7f9143b | 55 | #include "ada-lang.h" |
d1aa2f50 | 56 | #include "top.h" |
79a45b7d | 57 | #include "valprint.h" |
4efc6507 | 58 | #include "jit.h" |
65d79d4b | 59 | #include "parser-defs.h" |
55aa24fb SDJ |
60 | #include "gdb_regex.h" |
61 | #include "probe.h" | |
e9cafbcc | 62 | #include "cli/cli-utils.h" |
be34f849 | 63 | #include "continuations.h" |
1bfeeb0f JL |
64 | #include "stack.h" |
65 | #include "skip.h" | |
b775012e | 66 | #include "ax-gdb.h" |
e2e4d78b | 67 | #include "dummy-frame.h" |
5589af0e | 68 | #include "interps.h" |
d3ce09f5 SS |
69 | #include "format.h" |
70 | ||
1042e4c0 SS |
71 | /* readline include files */ |
72 | #include "readline/readline.h" | |
73 | #include "readline/history.h" | |
74 | ||
75 | /* readline defines this. */ | |
76 | #undef savestring | |
77 | ||
034dad6f | 78 | #include "mi/mi-common.h" |
6dddc817 | 79 | #include "extension.h" |
104c1213 | 80 | |
e7e8980f YQ |
81 | /* Enums for exception-handling support. */ |
82 | enum exception_event_kind | |
83 | { | |
84 | EX_EVENT_THROW, | |
591f19e8 | 85 | EX_EVENT_RETHROW, |
e7e8980f YQ |
86 | EX_EVENT_CATCH |
87 | }; | |
88 | ||
4a64f543 | 89 | /* Prototypes for local functions. */ |
c906108c | 90 | |
a14ed312 | 91 | static void enable_delete_command (char *, int); |
c906108c | 92 | |
a14ed312 | 93 | static void enable_once_command (char *, int); |
c906108c | 94 | |
816338b5 SS |
95 | static void enable_count_command (char *, int); |
96 | ||
a14ed312 | 97 | static void disable_command (char *, int); |
c906108c | 98 | |
a14ed312 | 99 | static void enable_command (char *, int); |
c906108c | 100 | |
95a42b64 TT |
101 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
102 | void *), | |
103 | void *); | |
c906108c | 104 | |
a14ed312 | 105 | static void ignore_command (char *, int); |
c906108c | 106 | |
4efb68b1 | 107 | static int breakpoint_re_set_one (void *); |
c906108c | 108 | |
348d480f PA |
109 | static void breakpoint_re_set_default (struct breakpoint *); |
110 | ||
983af33b SDJ |
111 | static void create_sals_from_address_default (char **, |
112 | struct linespec_result *, | |
113 | enum bptype, char *, | |
114 | char **); | |
115 | ||
116 | static void create_breakpoints_sal_default (struct gdbarch *, | |
117 | struct linespec_result *, | |
e7e0cddf | 118 | char *, char *, enum bptype, |
983af33b SDJ |
119 | enum bpdisp, int, int, |
120 | int, | |
121 | const struct breakpoint_ops *, | |
44f238bb | 122 | int, int, int, unsigned); |
983af33b SDJ |
123 | |
124 | static void decode_linespec_default (struct breakpoint *, char **, | |
125 | struct symtabs_and_lines *); | |
126 | ||
a14ed312 | 127 | static void clear_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | static void catch_command (char *, int); |
c906108c | 130 | |
a9634178 | 131 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 132 | |
98deb0da | 133 | static void break_command_1 (char *, int, int); |
c906108c | 134 | |
a14ed312 | 135 | static void mention (struct breakpoint *); |
c906108c | 136 | |
348d480f PA |
137 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
138 | enum bptype, | |
c0a91b2b | 139 | const struct breakpoint_ops *); |
3742cc8b YQ |
140 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
141 | const struct symtab_and_line *); | |
142 | ||
4a64f543 MS |
143 | /* This function is used in gdbtk sources and thus can not be made |
144 | static. */ | |
63c252f8 | 145 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 146 | struct symtab_and_line, |
c0a91b2b TT |
147 | enum bptype, |
148 | const struct breakpoint_ops *); | |
c906108c | 149 | |
06edf0c0 PA |
150 | static struct breakpoint * |
151 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
152 | enum bptype type, | |
a1aa2221 LM |
153 | const struct breakpoint_ops *ops, |
154 | int loc_enabled); | |
06edf0c0 | 155 | |
76897487 KB |
156 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
157 | ||
a6d9a66e UW |
158 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
159 | CORE_ADDR bpaddr, | |
88f7da05 | 160 | enum bptype bptype); |
76897487 | 161 | |
6c95b8df PA |
162 | static void describe_other_breakpoints (struct gdbarch *, |
163 | struct program_space *, CORE_ADDR, | |
5af949e3 | 164 | struct obj_section *, int); |
c906108c | 165 | |
85d721b8 PA |
166 | static int watchpoint_locations_match (struct bp_location *loc1, |
167 | struct bp_location *loc2); | |
168 | ||
f1310107 TJB |
169 | static int breakpoint_location_address_match (struct bp_location *bl, |
170 | struct address_space *aspace, | |
171 | CORE_ADDR addr); | |
172 | ||
a14ed312 | 173 | static void breakpoints_info (char *, int); |
c906108c | 174 | |
d77f58be SS |
175 | static void watchpoints_info (char *, int); |
176 | ||
e5a67952 MS |
177 | static int breakpoint_1 (char *, int, |
178 | int (*) (const struct breakpoint *)); | |
c906108c | 179 | |
4efb68b1 | 180 | static int breakpoint_cond_eval (void *); |
c906108c | 181 | |
4efb68b1 | 182 | static void cleanup_executing_breakpoints (void *); |
c906108c | 183 | |
a14ed312 | 184 | static void commands_command (char *, int); |
c906108c | 185 | |
a14ed312 | 186 | static void condition_command (char *, int); |
c906108c | 187 | |
c5aa993b JM |
188 | typedef enum |
189 | { | |
190 | mark_inserted, | |
191 | mark_uninserted | |
192 | } | |
193 | insertion_state_t; | |
c906108c | 194 | |
0bde7532 | 195 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 196 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 197 | |
e514a9d6 | 198 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 199 | |
4efb68b1 | 200 | static int watchpoint_check (void *); |
c906108c | 201 | |
a14ed312 | 202 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 203 | |
a14ed312 | 204 | static int hw_breakpoint_used_count (void); |
c906108c | 205 | |
a1398e0c PA |
206 | static int hw_watchpoint_use_count (struct breakpoint *); |
207 | ||
208 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
209 | enum bptype type, | |
210 | int *other_type_used); | |
c906108c | 211 | |
a14ed312 | 212 | static void hbreak_command (char *, int); |
c906108c | 213 | |
a14ed312 | 214 | static void thbreak_command (char *, int); |
c906108c | 215 | |
816338b5 SS |
216 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
217 | int count); | |
c906108c | 218 | |
a14ed312 | 219 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 220 | |
a14ed312 | 221 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 222 | |
a14ed312 | 223 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 224 | |
a14ed312 | 225 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 226 | |
fe3f5fa8 | 227 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
228 | static void incref_bp_location (struct bp_location *loc); |
229 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 230 | |
39d61571 | 231 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 232 | |
44702360 PA |
233 | /* update_global_location_list's modes of operation wrt to whether to |
234 | insert locations now. */ | |
235 | enum ugll_insert_mode | |
236 | { | |
237 | /* Don't insert any breakpoint locations into the inferior, only | |
238 | remove already-inserted locations that no longer should be | |
239 | inserted. Functions that delete a breakpoint or breakpoints | |
240 | should specify this mode, so that deleting a breakpoint doesn't | |
241 | have the side effect of inserting the locations of other | |
242 | breakpoints that are marked not-inserted, but should_be_inserted | |
243 | returns true on them. | |
244 | ||
245 | This behavior is useful is situations close to tear-down -- e.g., | |
246 | after an exec, while the target still has execution, but | |
247 | breakpoint shadows of the previous executable image should *NOT* | |
248 | be restored to the new image; or before detaching, where the | |
249 | target still has execution and wants to delete breakpoints from | |
250 | GDB's lists, and all breakpoints had already been removed from | |
251 | the inferior. */ | |
252 | UGLL_DONT_INSERT, | |
253 | ||
a25a5a45 PA |
254 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
255 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
256 | UGLL_MAY_INSERT, |
257 | ||
a25a5a45 PA |
258 | /* Insert locations now, irrespective of |
259 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
260 | stopped right now, and the user did "continue". We need to | |
261 | insert breakpoints _before_ resuming the target, but | |
262 | UGLL_MAY_INSERT wouldn't insert them, because | |
263 | breakpoints_should_be_inserted_now returns false at that point, | |
264 | as no thread is running yet. */ | |
04086b45 | 265 | UGLL_INSERT |
44702360 PA |
266 | }; |
267 | ||
268 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 269 | |
44702360 | 270 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 271 | |
d77f58be | 272 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
273 | |
274 | static void insert_breakpoint_locations (void); | |
a5606eee | 275 | |
1042e4c0 SS |
276 | static void tracepoints_info (char *, int); |
277 | ||
278 | static void delete_trace_command (char *, int); | |
279 | ||
280 | static void enable_trace_command (char *, int); | |
281 | ||
282 | static void disable_trace_command (char *, int); | |
283 | ||
284 | static void trace_pass_command (char *, int); | |
285 | ||
558a9d82 YQ |
286 | static void set_tracepoint_count (int num); |
287 | ||
9c06b0b4 TJB |
288 | static int is_masked_watchpoint (const struct breakpoint *b); |
289 | ||
b775012e LM |
290 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
291 | ||
983af33b SDJ |
292 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
293 | otherwise. */ | |
294 | ||
295 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 296 | |
2060206e PA |
297 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
298 | that are implemented on top of software or hardware breakpoints | |
299 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
300 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
301 | ||
302 | /* Internal breakpoints class type. */ | |
06edf0c0 | 303 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
304 | |
305 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
306 | static struct breakpoint_ops momentary_breakpoint_ops; |
307 | ||
e2e4d78b JK |
308 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
309 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
310 | ||
2060206e PA |
311 | /* The breakpoint_ops structure to be used in regular user created |
312 | breakpoints. */ | |
313 | struct breakpoint_ops bkpt_breakpoint_ops; | |
314 | ||
55aa24fb SDJ |
315 | /* Breakpoints set on probes. */ |
316 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
317 | ||
e7e0cddf | 318 | /* Dynamic printf class type. */ |
c5867ab6 | 319 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 320 | |
d3ce09f5 SS |
321 | /* The style in which to perform a dynamic printf. This is a user |
322 | option because different output options have different tradeoffs; | |
323 | if GDB does the printing, there is better error handling if there | |
324 | is a problem with any of the arguments, but using an inferior | |
325 | function lets you have special-purpose printers and sending of | |
326 | output to the same place as compiled-in print functions. */ | |
327 | ||
328 | static const char dprintf_style_gdb[] = "gdb"; | |
329 | static const char dprintf_style_call[] = "call"; | |
330 | static const char dprintf_style_agent[] = "agent"; | |
331 | static const char *const dprintf_style_enums[] = { | |
332 | dprintf_style_gdb, | |
333 | dprintf_style_call, | |
334 | dprintf_style_agent, | |
335 | NULL | |
336 | }; | |
337 | static const char *dprintf_style = dprintf_style_gdb; | |
338 | ||
339 | /* The function to use for dynamic printf if the preferred style is to | |
340 | call into the inferior. The value is simply a string that is | |
341 | copied into the command, so it can be anything that GDB can | |
342 | evaluate to a callable address, not necessarily a function name. */ | |
343 | ||
344 | static char *dprintf_function = ""; | |
345 | ||
346 | /* The channel to use for dynamic printf if the preferred style is to | |
347 | call into the inferior; if a nonempty string, it will be passed to | |
348 | the call as the first argument, with the format string as the | |
349 | second. As with the dprintf function, this can be anything that | |
350 | GDB knows how to evaluate, so in addition to common choices like | |
351 | "stderr", this could be an app-specific expression like | |
352 | "mystreams[curlogger]". */ | |
353 | ||
354 | static char *dprintf_channel = ""; | |
355 | ||
356 | /* True if dprintf commands should continue to operate even if GDB | |
357 | has disconnected. */ | |
358 | static int disconnected_dprintf = 1; | |
359 | ||
5cea2a26 PA |
360 | /* A reference-counted struct command_line. This lets multiple |
361 | breakpoints share a single command list. */ | |
362 | struct counted_command_line | |
363 | { | |
364 | /* The reference count. */ | |
365 | int refc; | |
366 | ||
367 | /* The command list. */ | |
368 | struct command_line *commands; | |
369 | }; | |
370 | ||
371 | struct command_line * | |
372 | breakpoint_commands (struct breakpoint *b) | |
373 | { | |
374 | return b->commands ? b->commands->commands : NULL; | |
375 | } | |
3daf8fe5 | 376 | |
f3b1572e PA |
377 | /* Flag indicating that a command has proceeded the inferior past the |
378 | current breakpoint. */ | |
379 | ||
380 | static int breakpoint_proceeded; | |
381 | ||
956a9fb9 | 382 | const char * |
2cec12e5 AR |
383 | bpdisp_text (enum bpdisp disp) |
384 | { | |
4a64f543 MS |
385 | /* NOTE: the following values are a part of MI protocol and |
386 | represent values of 'disp' field returned when inferior stops at | |
387 | a breakpoint. */ | |
bc043ef3 | 388 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 389 | |
2cec12e5 AR |
390 | return bpdisps[(int) disp]; |
391 | } | |
c906108c | 392 | |
4a64f543 | 393 | /* Prototypes for exported functions. */ |
c906108c | 394 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 395 | if such is available. */ |
c906108c SS |
396 | static int can_use_hw_watchpoints; |
397 | ||
920d2a44 AC |
398 | static void |
399 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
400 | struct cmd_list_element *c, | |
401 | const char *value) | |
402 | { | |
3e43a32a MS |
403 | fprintf_filtered (file, |
404 | _("Debugger's willingness to use " | |
405 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
406 | value); |
407 | } | |
408 | ||
fa8d40ab JJ |
409 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
410 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 411 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
412 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
413 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
414 | static void |
415 | show_pending_break_support (struct ui_file *file, int from_tty, | |
416 | struct cmd_list_element *c, | |
417 | const char *value) | |
418 | { | |
3e43a32a MS |
419 | fprintf_filtered (file, |
420 | _("Debugger's behavior regarding " | |
421 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
422 | value); |
423 | } | |
fa8d40ab | 424 | |
765dc015 | 425 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 426 | set with "break" but falling in read-only memory. |
765dc015 VP |
427 | If 0, gdb will warn about such breakpoints, but won't automatically |
428 | use hardware breakpoints. */ | |
429 | static int automatic_hardware_breakpoints; | |
430 | static void | |
431 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
432 | struct cmd_list_element *c, | |
433 | const char *value) | |
434 | { | |
3e43a32a MS |
435 | fprintf_filtered (file, |
436 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
437 | value); |
438 | } | |
439 | ||
a25a5a45 PA |
440 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
441 | stopped, and immediately inserts any new breakpoints as soon as | |
442 | they're created. If off (default), GDB keeps breakpoints off of | |
443 | the target as long as possible. That is, it delays inserting | |
444 | breakpoints until the next resume, and removes them again when the | |
445 | target fully stops. This is a bit safer in case GDB crashes while | |
446 | processing user input. */ | |
447 | static int always_inserted_mode = 0; | |
72d0e2c5 | 448 | |
33e5cbd6 | 449 | static void |
74960c60 | 450 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 451 | struct cmd_list_element *c, const char *value) |
74960c60 | 452 | { |
a25a5a45 PA |
453 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
454 | value); | |
74960c60 VP |
455 | } |
456 | ||
b57bacec PA |
457 | /* See breakpoint.h. */ |
458 | ||
33e5cbd6 | 459 | int |
a25a5a45 | 460 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 461 | { |
a25a5a45 PA |
462 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
463 | { | |
464 | /* If breakpoints are global, they should be inserted even if no | |
465 | thread under gdb's control is running, or even if there are | |
466 | no threads under GDB's control yet. */ | |
467 | return 1; | |
468 | } | |
469 | else if (target_has_execution) | |
470 | { | |
a25a5a45 PA |
471 | if (always_inserted_mode) |
472 | { | |
473 | /* The user wants breakpoints inserted even if all threads | |
474 | are stopped. */ | |
475 | return 1; | |
476 | } | |
477 | ||
b57bacec PA |
478 | if (threads_are_executing ()) |
479 | return 1; | |
a25a5a45 PA |
480 | } |
481 | return 0; | |
33e5cbd6 | 482 | } |
765dc015 | 483 | |
b775012e LM |
484 | static const char condition_evaluation_both[] = "host or target"; |
485 | ||
486 | /* Modes for breakpoint condition evaluation. */ | |
487 | static const char condition_evaluation_auto[] = "auto"; | |
488 | static const char condition_evaluation_host[] = "host"; | |
489 | static const char condition_evaluation_target[] = "target"; | |
490 | static const char *const condition_evaluation_enums[] = { | |
491 | condition_evaluation_auto, | |
492 | condition_evaluation_host, | |
493 | condition_evaluation_target, | |
494 | NULL | |
495 | }; | |
496 | ||
497 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
498 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
499 | ||
500 | /* Global that we use to display information to the user (gets its value from | |
501 | condition_evaluation_mode_1. */ | |
502 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
503 | ||
504 | /* Translate a condition evaluation mode MODE into either "host" | |
505 | or "target". This is used mostly to translate from "auto" to the | |
506 | real setting that is being used. It returns the translated | |
507 | evaluation mode. */ | |
508 | ||
509 | static const char * | |
510 | translate_condition_evaluation_mode (const char *mode) | |
511 | { | |
512 | if (mode == condition_evaluation_auto) | |
513 | { | |
514 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
515 | return condition_evaluation_target; | |
516 | else | |
517 | return condition_evaluation_host; | |
518 | } | |
519 | else | |
520 | return mode; | |
521 | } | |
522 | ||
523 | /* Discovers what condition_evaluation_auto translates to. */ | |
524 | ||
525 | static const char * | |
526 | breakpoint_condition_evaluation_mode (void) | |
527 | { | |
528 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
529 | } | |
530 | ||
531 | /* Return true if GDB should evaluate breakpoint conditions or false | |
532 | otherwise. */ | |
533 | ||
534 | static int | |
535 | gdb_evaluates_breakpoint_condition_p (void) | |
536 | { | |
537 | const char *mode = breakpoint_condition_evaluation_mode (); | |
538 | ||
539 | return (mode == condition_evaluation_host); | |
540 | } | |
541 | ||
a14ed312 | 542 | void _initialize_breakpoint (void); |
c906108c | 543 | |
c906108c SS |
544 | /* Are we executing breakpoint commands? */ |
545 | static int executing_breakpoint_commands; | |
546 | ||
c02f5703 MS |
547 | /* Are overlay event breakpoints enabled? */ |
548 | static int overlay_events_enabled; | |
549 | ||
e09342b5 TJB |
550 | /* See description in breakpoint.h. */ |
551 | int target_exact_watchpoints = 0; | |
552 | ||
c906108c | 553 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 554 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 555 | current breakpoint. */ |
c906108c | 556 | |
5c44784c | 557 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 558 | |
5c44784c JM |
559 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
560 | for (B = breakpoint_chain; \ | |
561 | B ? (TMP=B->next, 1): 0; \ | |
562 | B = TMP) | |
c906108c | 563 | |
4a64f543 MS |
564 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
565 | not provided so update_global_location_list must not be called | |
566 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 567 | |
876fa593 JK |
568 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
569 | for (BP_TMP = bp_location; \ | |
570 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
571 | BP_TMP++) | |
7cc221ef | 572 | |
b775012e LM |
573 | /* Iterates through locations with address ADDRESS for the currently selected |
574 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
575 | to where the loop should start from. | |
576 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
577 | appropriate location to start with. */ | |
578 | ||
579 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
580 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
581 | BP_LOCP_TMP = BP_LOCP_START; \ | |
582 | BP_LOCP_START \ | |
583 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
584 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
585 | BP_LOCP_TMP++) | |
586 | ||
1042e4c0 SS |
587 | /* Iterator for tracepoints only. */ |
588 | ||
589 | #define ALL_TRACEPOINTS(B) \ | |
590 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 591 | if (is_tracepoint (B)) |
1042e4c0 | 592 | |
7cc221ef | 593 | /* Chains of all breakpoints defined. */ |
c906108c SS |
594 | |
595 | struct breakpoint *breakpoint_chain; | |
596 | ||
876fa593 JK |
597 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
598 | ||
599 | static struct bp_location **bp_location; | |
600 | ||
601 | /* Number of elements of BP_LOCATION. */ | |
602 | ||
603 | static unsigned bp_location_count; | |
604 | ||
4a64f543 MS |
605 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
606 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
607 | result from bp_location_has_shadow. You can use it for roughly | |
608 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
609 | an address you need to read. */ | |
876fa593 JK |
610 | |
611 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
612 | ||
4a64f543 MS |
613 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
614 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
615 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
616 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
617 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
618 | |
619 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 620 | |
4a64f543 MS |
621 | /* The locations that no longer correspond to any breakpoint, unlinked |
622 | from bp_location array, but for which a hit may still be reported | |
623 | by a target. */ | |
20874c92 VP |
624 | VEC(bp_location_p) *moribund_locations = NULL; |
625 | ||
c906108c SS |
626 | /* Number of last breakpoint made. */ |
627 | ||
95a42b64 TT |
628 | static int breakpoint_count; |
629 | ||
86b17b60 PA |
630 | /* The value of `breakpoint_count' before the last command that |
631 | created breakpoints. If the last (break-like) command created more | |
632 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
633 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
634 | static int prev_breakpoint_count; | |
c906108c | 635 | |
1042e4c0 SS |
636 | /* Number of last tracepoint made. */ |
637 | ||
95a42b64 | 638 | static int tracepoint_count; |
1042e4c0 | 639 | |
6149aea9 PA |
640 | static struct cmd_list_element *breakpoint_set_cmdlist; |
641 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 642 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 643 | |
badd37ce SDJ |
644 | /* See declaration at breakpoint.h. */ |
645 | ||
646 | struct breakpoint * | |
647 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
648 | void *user_data) | |
649 | { | |
650 | struct breakpoint *b = NULL; | |
651 | ||
652 | ALL_BREAKPOINTS (b) | |
653 | { | |
654 | if (func (b, user_data) != 0) | |
655 | break; | |
656 | } | |
657 | ||
658 | return b; | |
659 | } | |
660 | ||
468d015d JJ |
661 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
662 | static int | |
663 | breakpoint_enabled (struct breakpoint *b) | |
664 | { | |
0d381245 | 665 | return (b->enable_state == bp_enabled); |
468d015d JJ |
666 | } |
667 | ||
c906108c SS |
668 | /* Set breakpoint count to NUM. */ |
669 | ||
95a42b64 | 670 | static void |
fba45db2 | 671 | set_breakpoint_count (int num) |
c906108c | 672 | { |
86b17b60 | 673 | prev_breakpoint_count = breakpoint_count; |
c906108c | 674 | breakpoint_count = num; |
4fa62494 | 675 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
676 | } |
677 | ||
86b17b60 PA |
678 | /* Used by `start_rbreak_breakpoints' below, to record the current |
679 | breakpoint count before "rbreak" creates any breakpoint. */ | |
680 | static int rbreak_start_breakpoint_count; | |
681 | ||
95a42b64 TT |
682 | /* Called at the start an "rbreak" command to record the first |
683 | breakpoint made. */ | |
86b17b60 | 684 | |
95a42b64 TT |
685 | void |
686 | start_rbreak_breakpoints (void) | |
687 | { | |
86b17b60 | 688 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
689 | } |
690 | ||
691 | /* Called at the end of an "rbreak" command to record the last | |
692 | breakpoint made. */ | |
86b17b60 | 693 | |
95a42b64 TT |
694 | void |
695 | end_rbreak_breakpoints (void) | |
696 | { | |
86b17b60 | 697 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
698 | } |
699 | ||
4a64f543 | 700 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
701 | |
702 | void | |
fba45db2 | 703 | clear_breakpoint_hit_counts (void) |
c906108c SS |
704 | { |
705 | struct breakpoint *b; | |
706 | ||
707 | ALL_BREAKPOINTS (b) | |
708 | b->hit_count = 0; | |
709 | } | |
710 | ||
9add0f1b TT |
711 | /* Allocate a new counted_command_line with reference count of 1. |
712 | The new structure owns COMMANDS. */ | |
713 | ||
714 | static struct counted_command_line * | |
715 | alloc_counted_command_line (struct command_line *commands) | |
716 | { | |
717 | struct counted_command_line *result | |
718 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 719 | |
9add0f1b TT |
720 | result->refc = 1; |
721 | result->commands = commands; | |
722 | return result; | |
723 | } | |
724 | ||
725 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
726 | ||
727 | static void | |
728 | incref_counted_command_line (struct counted_command_line *cmd) | |
729 | { | |
730 | if (cmd) | |
731 | ++cmd->refc; | |
732 | } | |
733 | ||
734 | /* Decrement reference count. If the reference count reaches 0, | |
735 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
736 | nothing if *CMDP is NULL. */ | |
737 | ||
738 | static void | |
739 | decref_counted_command_line (struct counted_command_line **cmdp) | |
740 | { | |
741 | if (*cmdp) | |
742 | { | |
743 | if (--(*cmdp)->refc == 0) | |
744 | { | |
745 | free_command_lines (&(*cmdp)->commands); | |
746 | xfree (*cmdp); | |
747 | } | |
748 | *cmdp = NULL; | |
749 | } | |
750 | } | |
751 | ||
752 | /* A cleanup function that calls decref_counted_command_line. */ | |
753 | ||
754 | static void | |
755 | do_cleanup_counted_command_line (void *arg) | |
756 | { | |
757 | decref_counted_command_line (arg); | |
758 | } | |
759 | ||
760 | /* Create a cleanup that calls decref_counted_command_line on the | |
761 | argument. */ | |
762 | ||
763 | static struct cleanup * | |
764 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
765 | { | |
766 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
767 | } | |
768 | ||
c906108c | 769 | \f |
48cb2d85 VP |
770 | /* Return the breakpoint with the specified number, or NULL |
771 | if the number does not refer to an existing breakpoint. */ | |
772 | ||
773 | struct breakpoint * | |
774 | get_breakpoint (int num) | |
775 | { | |
776 | struct breakpoint *b; | |
777 | ||
778 | ALL_BREAKPOINTS (b) | |
779 | if (b->number == num) | |
780 | return b; | |
781 | ||
782 | return NULL; | |
783 | } | |
5c44784c | 784 | |
c906108c | 785 | \f |
adc36818 | 786 | |
b775012e LM |
787 | /* Mark locations as "conditions have changed" in case the target supports |
788 | evaluating conditions on its side. */ | |
789 | ||
790 | static void | |
791 | mark_breakpoint_modified (struct breakpoint *b) | |
792 | { | |
793 | struct bp_location *loc; | |
794 | ||
795 | /* This is only meaningful if the target is | |
796 | evaluating conditions and if the user has | |
797 | opted for condition evaluation on the target's | |
798 | side. */ | |
799 | if (gdb_evaluates_breakpoint_condition_p () | |
800 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
801 | return; | |
802 | ||
803 | if (!is_breakpoint (b)) | |
804 | return; | |
805 | ||
806 | for (loc = b->loc; loc; loc = loc->next) | |
807 | loc->condition_changed = condition_modified; | |
808 | } | |
809 | ||
810 | /* Mark location as "conditions have changed" in case the target supports | |
811 | evaluating conditions on its side. */ | |
812 | ||
813 | static void | |
814 | mark_breakpoint_location_modified (struct bp_location *loc) | |
815 | { | |
816 | /* This is only meaningful if the target is | |
817 | evaluating conditions and if the user has | |
818 | opted for condition evaluation on the target's | |
819 | side. */ | |
820 | if (gdb_evaluates_breakpoint_condition_p () | |
821 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
822 | ||
823 | return; | |
824 | ||
825 | if (!is_breakpoint (loc->owner)) | |
826 | return; | |
827 | ||
828 | loc->condition_changed = condition_modified; | |
829 | } | |
830 | ||
831 | /* Sets the condition-evaluation mode using the static global | |
832 | condition_evaluation_mode. */ | |
833 | ||
834 | static void | |
835 | set_condition_evaluation_mode (char *args, int from_tty, | |
836 | struct cmd_list_element *c) | |
837 | { | |
b775012e LM |
838 | const char *old_mode, *new_mode; |
839 | ||
840 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
841 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
842 | { | |
843 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
844 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
845 | "Using host evaluation mode instead.")); | |
846 | return; | |
847 | } | |
848 | ||
849 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
850 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
851 | ||
abf1152a JK |
852 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
853 | settings was "auto". */ | |
854 | condition_evaluation_mode = condition_evaluation_mode_1; | |
855 | ||
b775012e LM |
856 | /* Only update the mode if the user picked a different one. */ |
857 | if (new_mode != old_mode) | |
858 | { | |
859 | struct bp_location *loc, **loc_tmp; | |
860 | /* If the user switched to a different evaluation mode, we | |
861 | need to synch the changes with the target as follows: | |
862 | ||
863 | "host" -> "target": Send all (valid) conditions to the target. | |
864 | "target" -> "host": Remove all the conditions from the target. | |
865 | */ | |
866 | ||
b775012e LM |
867 | if (new_mode == condition_evaluation_target) |
868 | { | |
869 | /* Mark everything modified and synch conditions with the | |
870 | target. */ | |
871 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
872 | mark_breakpoint_location_modified (loc); | |
873 | } | |
874 | else | |
875 | { | |
876 | /* Manually mark non-duplicate locations to synch conditions | |
877 | with the target. We do this to remove all the conditions the | |
878 | target knows about. */ | |
879 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
880 | if (is_breakpoint (loc->owner) && loc->inserted) | |
881 | loc->needs_update = 1; | |
882 | } | |
883 | ||
884 | /* Do the update. */ | |
44702360 | 885 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
886 | } |
887 | ||
888 | return; | |
889 | } | |
890 | ||
891 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
892 | what "auto" is translating to. */ | |
893 | ||
894 | static void | |
895 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
896 | struct cmd_list_element *c, const char *value) | |
897 | { | |
898 | if (condition_evaluation_mode == condition_evaluation_auto) | |
899 | fprintf_filtered (file, | |
900 | _("Breakpoint condition evaluation " | |
901 | "mode is %s (currently %s).\n"), | |
902 | value, | |
903 | breakpoint_condition_evaluation_mode ()); | |
904 | else | |
905 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
906 | value); | |
907 | } | |
908 | ||
909 | /* A comparison function for bp_location AP and BP that is used by | |
910 | bsearch. This comparison function only cares about addresses, unlike | |
911 | the more general bp_location_compare function. */ | |
912 | ||
913 | static int | |
914 | bp_location_compare_addrs (const void *ap, const void *bp) | |
915 | { | |
916 | struct bp_location *a = *(void **) ap; | |
917 | struct bp_location *b = *(void **) bp; | |
918 | ||
919 | if (a->address == b->address) | |
920 | return 0; | |
921 | else | |
922 | return ((a->address > b->address) - (a->address < b->address)); | |
923 | } | |
924 | ||
925 | /* Helper function to skip all bp_locations with addresses | |
926 | less than ADDRESS. It returns the first bp_location that | |
927 | is greater than or equal to ADDRESS. If none is found, just | |
928 | return NULL. */ | |
929 | ||
930 | static struct bp_location ** | |
931 | get_first_locp_gte_addr (CORE_ADDR address) | |
932 | { | |
933 | struct bp_location dummy_loc; | |
934 | struct bp_location *dummy_locp = &dummy_loc; | |
935 | struct bp_location **locp_found = NULL; | |
936 | ||
937 | /* Initialize the dummy location's address field. */ | |
938 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
939 | dummy_loc.address = address; | |
940 | ||
941 | /* Find a close match to the first location at ADDRESS. */ | |
942 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
943 | sizeof (struct bp_location **), | |
944 | bp_location_compare_addrs); | |
945 | ||
946 | /* Nothing was found, nothing left to do. */ | |
947 | if (locp_found == NULL) | |
948 | return NULL; | |
949 | ||
950 | /* We may have found a location that is at ADDRESS but is not the first in the | |
951 | location's list. Go backwards (if possible) and locate the first one. */ | |
952 | while ((locp_found - 1) >= bp_location | |
953 | && (*(locp_found - 1))->address == address) | |
954 | locp_found--; | |
955 | ||
956 | return locp_found; | |
957 | } | |
958 | ||
adc36818 | 959 | void |
7a26bd4d | 960 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
961 | int from_tty) |
962 | { | |
3a5c3e22 PA |
963 | xfree (b->cond_string); |
964 | b->cond_string = NULL; | |
adc36818 | 965 | |
3a5c3e22 | 966 | if (is_watchpoint (b)) |
adc36818 | 967 | { |
3a5c3e22 PA |
968 | struct watchpoint *w = (struct watchpoint *) b; |
969 | ||
970 | xfree (w->cond_exp); | |
971 | w->cond_exp = NULL; | |
972 | } | |
973 | else | |
974 | { | |
975 | struct bp_location *loc; | |
976 | ||
977 | for (loc = b->loc; loc; loc = loc->next) | |
978 | { | |
979 | xfree (loc->cond); | |
980 | loc->cond = NULL; | |
b775012e LM |
981 | |
982 | /* No need to free the condition agent expression | |
983 | bytecode (if we have one). We will handle this | |
984 | when we go through update_global_location_list. */ | |
3a5c3e22 | 985 | } |
adc36818 | 986 | } |
adc36818 PM |
987 | |
988 | if (*exp == 0) | |
989 | { | |
990 | if (from_tty) | |
991 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
992 | } | |
993 | else | |
994 | { | |
bbc13ae3 | 995 | const char *arg = exp; |
cc59ec59 | 996 | |
adc36818 PM |
997 | /* I don't know if it matters whether this is the string the user |
998 | typed in or the decompiled expression. */ | |
999 | b->cond_string = xstrdup (arg); | |
1000 | b->condition_not_parsed = 0; | |
1001 | ||
1002 | if (is_watchpoint (b)) | |
1003 | { | |
3a5c3e22 PA |
1004 | struct watchpoint *w = (struct watchpoint *) b; |
1005 | ||
adc36818 PM |
1006 | innermost_block = NULL; |
1007 | arg = exp; | |
1bb9788d | 1008 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
1009 | if (*arg) |
1010 | error (_("Junk at end of expression")); | |
3a5c3e22 | 1011 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
1012 | } |
1013 | else | |
1014 | { | |
3a5c3e22 PA |
1015 | struct bp_location *loc; |
1016 | ||
adc36818 PM |
1017 | for (loc = b->loc; loc; loc = loc->next) |
1018 | { | |
1019 | arg = exp; | |
1020 | loc->cond = | |
1bb9788d TT |
1021 | parse_exp_1 (&arg, loc->address, |
1022 | block_for_pc (loc->address), 0); | |
adc36818 PM |
1023 | if (*arg) |
1024 | error (_("Junk at end of expression")); | |
1025 | } | |
1026 | } | |
1027 | } | |
b775012e LM |
1028 | mark_breakpoint_modified (b); |
1029 | ||
8d3788bd | 1030 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
1031 | } |
1032 | ||
d55637df TT |
1033 | /* Completion for the "condition" command. */ |
1034 | ||
1035 | static VEC (char_ptr) * | |
6f937416 PA |
1036 | condition_completer (struct cmd_list_element *cmd, |
1037 | const char *text, const char *word) | |
d55637df | 1038 | { |
6f937416 | 1039 | const char *space; |
d55637df | 1040 | |
6f937416 PA |
1041 | text = skip_spaces_const (text); |
1042 | space = skip_to_space_const (text); | |
d55637df TT |
1043 | if (*space == '\0') |
1044 | { | |
1045 | int len; | |
1046 | struct breakpoint *b; | |
1047 | VEC (char_ptr) *result = NULL; | |
1048 | ||
1049 | if (text[0] == '$') | |
1050 | { | |
1051 | /* We don't support completion of history indices. */ | |
1052 | if (isdigit (text[1])) | |
1053 | return NULL; | |
1054 | return complete_internalvar (&text[1]); | |
1055 | } | |
1056 | ||
1057 | /* We're completing the breakpoint number. */ | |
1058 | len = strlen (text); | |
1059 | ||
1060 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
1061 | { |
1062 | char number[50]; | |
1063 | ||
1064 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1065 | ||
1066 | if (strncmp (number, text, len) == 0) | |
1067 | VEC_safe_push (char_ptr, result, xstrdup (number)); | |
1068 | } | |
d55637df TT |
1069 | |
1070 | return result; | |
1071 | } | |
1072 | ||
1073 | /* We're completing the expression part. */ | |
6f937416 | 1074 | text = skip_spaces_const (space); |
d55637df TT |
1075 | return expression_completer (cmd, text, word); |
1076 | } | |
1077 | ||
c906108c SS |
1078 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1079 | ||
1080 | static void | |
fba45db2 | 1081 | condition_command (char *arg, int from_tty) |
c906108c | 1082 | { |
52f0bd74 | 1083 | struct breakpoint *b; |
c906108c | 1084 | char *p; |
52f0bd74 | 1085 | int bnum; |
c906108c SS |
1086 | |
1087 | if (arg == 0) | |
e2e0b3e5 | 1088 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1089 | |
1090 | p = arg; | |
1091 | bnum = get_number (&p); | |
5c44784c | 1092 | if (bnum == 0) |
8a3fe4f8 | 1093 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1094 | |
1095 | ALL_BREAKPOINTS (b) | |
1096 | if (b->number == bnum) | |
2f069f6f | 1097 | { |
6dddc817 DE |
1098 | /* Check if this breakpoint has a "stop" method implemented in an |
1099 | extension language. This method and conditions entered into GDB | |
1100 | from the CLI are mutually exclusive. */ | |
1101 | const struct extension_language_defn *extlang | |
1102 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1103 | ||
1104 | if (extlang != NULL) | |
1105 | { | |
1106 | error (_("Only one stop condition allowed. There is currently" | |
1107 | " a %s stop condition defined for this breakpoint."), | |
1108 | ext_lang_capitalized_name (extlang)); | |
1109 | } | |
2566ad2d | 1110 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1111 | |
1112 | if (is_breakpoint (b)) | |
44702360 | 1113 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1114 | |
2f069f6f JB |
1115 | return; |
1116 | } | |
c906108c | 1117 | |
8a3fe4f8 | 1118 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1119 | } |
1120 | ||
a7bdde9e VP |
1121 | /* Check that COMMAND do not contain commands that are suitable |
1122 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1123 | Throw if any such commands is found. */ |
1124 | ||
a7bdde9e VP |
1125 | static void |
1126 | check_no_tracepoint_commands (struct command_line *commands) | |
1127 | { | |
1128 | struct command_line *c; | |
cc59ec59 | 1129 | |
a7bdde9e VP |
1130 | for (c = commands; c; c = c->next) |
1131 | { | |
1132 | int i; | |
1133 | ||
1134 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1135 | error (_("The 'while-stepping' command can " |
1136 | "only be used for tracepoints")); | |
a7bdde9e VP |
1137 | |
1138 | for (i = 0; i < c->body_count; ++i) | |
1139 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1140 | ||
1141 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1142 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1143 | command directly. */ |
1144 | if (strstr (c->line, "collect ") == c->line) | |
1145 | error (_("The 'collect' command can only be used for tracepoints")); | |
1146 | ||
51661e93 VP |
1147 | if (strstr (c->line, "teval ") == c->line) |
1148 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1149 | } |
1150 | } | |
1151 | ||
d77f58be SS |
1152 | /* Encapsulate tests for different types of tracepoints. */ |
1153 | ||
d9b3f62e PA |
1154 | static int |
1155 | is_tracepoint_type (enum bptype type) | |
1156 | { | |
1157 | return (type == bp_tracepoint | |
1158 | || type == bp_fast_tracepoint | |
1159 | || type == bp_static_tracepoint); | |
1160 | } | |
1161 | ||
a7bdde9e | 1162 | int |
d77f58be | 1163 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1164 | { |
d9b3f62e | 1165 | return is_tracepoint_type (b->type); |
a7bdde9e | 1166 | } |
d9b3f62e | 1167 | |
e5dd4106 | 1168 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1169 | breakpoint. This function will throw an exception if a problem is |
1170 | found. */ | |
48cb2d85 | 1171 | |
95a42b64 TT |
1172 | static void |
1173 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1174 | struct command_line *commands) | |
48cb2d85 | 1175 | { |
d77f58be | 1176 | if (is_tracepoint (b)) |
a7bdde9e | 1177 | { |
c9a6ce02 | 1178 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1179 | struct command_line *c; |
1180 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1181 | |
1182 | /* Reset the while-stepping step count. The previous commands | |
1183 | might have included a while-stepping action, while the new | |
1184 | ones might not. */ | |
1185 | t->step_count = 0; | |
1186 | ||
1187 | /* We need to verify that each top-level element of commands is | |
1188 | valid for tracepoints, that there's at most one | |
1189 | while-stepping element, and that the while-stepping's body | |
1190 | has valid tracing commands excluding nested while-stepping. | |
1191 | We also need to validate the tracepoint action line in the | |
1192 | context of the tracepoint --- validate_actionline actually | |
1193 | has side effects, like setting the tracepoint's | |
1194 | while-stepping STEP_COUNT, in addition to checking if the | |
1195 | collect/teval actions parse and make sense in the | |
1196 | tracepoint's context. */ | |
a7bdde9e VP |
1197 | for (c = commands; c; c = c->next) |
1198 | { | |
a7bdde9e VP |
1199 | if (c->control_type == while_stepping_control) |
1200 | { | |
1201 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1202 | error (_("The 'while-stepping' command " |
1203 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1204 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1205 | error (_("The 'while-stepping' command " |
1206 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1207 | |
1208 | if (while_stepping) | |
3e43a32a MS |
1209 | error (_("The 'while-stepping' command " |
1210 | "can be used only once")); | |
a7bdde9e VP |
1211 | else |
1212 | while_stepping = c; | |
1213 | } | |
c9a6ce02 PA |
1214 | |
1215 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1216 | } |
1217 | if (while_stepping) | |
1218 | { | |
1219 | struct command_line *c2; | |
1220 | ||
1221 | gdb_assert (while_stepping->body_count == 1); | |
1222 | c2 = while_stepping->body_list[0]; | |
1223 | for (; c2; c2 = c2->next) | |
1224 | { | |
a7bdde9e VP |
1225 | if (c2->control_type == while_stepping_control) |
1226 | error (_("The 'while-stepping' command cannot be nested")); | |
1227 | } | |
1228 | } | |
1229 | } | |
1230 | else | |
1231 | { | |
1232 | check_no_tracepoint_commands (commands); | |
1233 | } | |
95a42b64 TT |
1234 | } |
1235 | ||
0fb4aa4b PA |
1236 | /* Return a vector of all the static tracepoints set at ADDR. The |
1237 | caller is responsible for releasing the vector. */ | |
1238 | ||
1239 | VEC(breakpoint_p) * | |
1240 | static_tracepoints_here (CORE_ADDR addr) | |
1241 | { | |
1242 | struct breakpoint *b; | |
1243 | VEC(breakpoint_p) *found = 0; | |
1244 | struct bp_location *loc; | |
1245 | ||
1246 | ALL_BREAKPOINTS (b) | |
1247 | if (b->type == bp_static_tracepoint) | |
1248 | { | |
1249 | for (loc = b->loc; loc; loc = loc->next) | |
1250 | if (loc->address == addr) | |
1251 | VEC_safe_push(breakpoint_p, found, b); | |
1252 | } | |
1253 | ||
1254 | return found; | |
1255 | } | |
1256 | ||
95a42b64 | 1257 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1258 | validate that only allowed commands are included. */ |
95a42b64 TT |
1259 | |
1260 | void | |
4a64f543 MS |
1261 | breakpoint_set_commands (struct breakpoint *b, |
1262 | struct command_line *commands) | |
95a42b64 TT |
1263 | { |
1264 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1265 | |
9add0f1b TT |
1266 | decref_counted_command_line (&b->commands); |
1267 | b->commands = alloc_counted_command_line (commands); | |
8d3788bd | 1268 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1269 | } |
1270 | ||
45a43567 TT |
1271 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1272 | is not the same as the "silent" that may appear in the breakpoint's | |
1273 | commands. */ | |
1274 | ||
1275 | void | |
1276 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1277 | { | |
1278 | int old_silent = b->silent; | |
1279 | ||
1280 | b->silent = silent; | |
1281 | if (old_silent != silent) | |
8d3788bd | 1282 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1283 | } |
1284 | ||
1285 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1286 | breakpoint work for any thread. */ | |
1287 | ||
1288 | void | |
1289 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1290 | { | |
1291 | int old_thread = b->thread; | |
1292 | ||
1293 | b->thread = thread; | |
1294 | if (old_thread != thread) | |
8d3788bd | 1295 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1296 | } |
1297 | ||
1298 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1299 | breakpoint work for any task. */ | |
1300 | ||
1301 | void | |
1302 | breakpoint_set_task (struct breakpoint *b, int task) | |
1303 | { | |
1304 | int old_task = b->task; | |
1305 | ||
1306 | b->task = task; | |
1307 | if (old_task != task) | |
8d3788bd | 1308 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1309 | } |
1310 | ||
95a42b64 TT |
1311 | void |
1312 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1313 | { |
1314 | struct breakpoint *b = closure; | |
cc59ec59 | 1315 | |
6f937416 | 1316 | validate_actionline (line, b); |
a7bdde9e VP |
1317 | } |
1318 | ||
95a42b64 TT |
1319 | /* A structure used to pass information through |
1320 | map_breakpoint_numbers. */ | |
1321 | ||
1322 | struct commands_info | |
1323 | { | |
1324 | /* True if the command was typed at a tty. */ | |
1325 | int from_tty; | |
86b17b60 PA |
1326 | |
1327 | /* The breakpoint range spec. */ | |
1328 | char *arg; | |
1329 | ||
95a42b64 TT |
1330 | /* Non-NULL if the body of the commands are being read from this |
1331 | already-parsed command. */ | |
1332 | struct command_line *control; | |
86b17b60 | 1333 | |
95a42b64 TT |
1334 | /* The command lines read from the user, or NULL if they have not |
1335 | yet been read. */ | |
1336 | struct counted_command_line *cmd; | |
1337 | }; | |
1338 | ||
1339 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1340 | commands_command. */ | |
1341 | ||
c906108c | 1342 | static void |
95a42b64 | 1343 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1344 | { |
95a42b64 | 1345 | struct commands_info *info = data; |
c906108c | 1346 | |
95a42b64 TT |
1347 | if (info->cmd == NULL) |
1348 | { | |
1349 | struct command_line *l; | |
5c44784c | 1350 | |
95a42b64 TT |
1351 | if (info->control != NULL) |
1352 | l = copy_command_lines (info->control->body_list[0]); | |
1353 | else | |
86b17b60 PA |
1354 | { |
1355 | struct cleanup *old_chain; | |
1356 | char *str; | |
c5aa993b | 1357 | |
3e43a32a MS |
1358 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1359 | "%s, one per line."), | |
86b17b60 PA |
1360 | info->arg); |
1361 | ||
1362 | old_chain = make_cleanup (xfree, str); | |
1363 | ||
1364 | l = read_command_lines (str, | |
1365 | info->from_tty, 1, | |
d77f58be | 1366 | (is_tracepoint (b) |
86b17b60 PA |
1367 | ? check_tracepoint_command : 0), |
1368 | b); | |
1369 | ||
1370 | do_cleanups (old_chain); | |
1371 | } | |
a7bdde9e | 1372 | |
95a42b64 TT |
1373 | info->cmd = alloc_counted_command_line (l); |
1374 | } | |
1375 | ||
1376 | /* If a breakpoint was on the list more than once, we don't need to | |
1377 | do anything. */ | |
1378 | if (b->commands != info->cmd) | |
1379 | { | |
1380 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1381 | incref_counted_command_line (info->cmd); | |
1382 | decref_counted_command_line (&b->commands); | |
1383 | b->commands = info->cmd; | |
8d3788bd | 1384 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1385 | } |
95a42b64 TT |
1386 | } |
1387 | ||
1388 | static void | |
4a64f543 MS |
1389 | commands_command_1 (char *arg, int from_tty, |
1390 | struct command_line *control) | |
95a42b64 TT |
1391 | { |
1392 | struct cleanup *cleanups; | |
1393 | struct commands_info info; | |
1394 | ||
1395 | info.from_tty = from_tty; | |
1396 | info.control = control; | |
1397 | info.cmd = NULL; | |
1398 | /* If we read command lines from the user, then `info' will hold an | |
1399 | extra reference to the commands that we must clean up. */ | |
1400 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1401 | ||
1402 | if (arg == NULL || !*arg) | |
1403 | { | |
86b17b60 | 1404 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1405 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1406 | breakpoint_count); | |
95a42b64 TT |
1407 | else if (breakpoint_count > 0) |
1408 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1409 | else |
1410 | { | |
1411 | /* So that we don't try to free the incoming non-NULL | |
1412 | argument in the cleanup below. Mapping breakpoint | |
1413 | numbers will fail in this case. */ | |
1414 | arg = NULL; | |
1415 | } | |
95a42b64 | 1416 | } |
9766ced4 SS |
1417 | else |
1418 | /* The command loop has some static state, so we need to preserve | |
1419 | our argument. */ | |
1420 | arg = xstrdup (arg); | |
86b17b60 PA |
1421 | |
1422 | if (arg != NULL) | |
1423 | make_cleanup (xfree, arg); | |
1424 | ||
1425 | info.arg = arg; | |
95a42b64 TT |
1426 | |
1427 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1428 | ||
1429 | if (info.cmd == NULL) | |
1430 | error (_("No breakpoints specified.")); | |
1431 | ||
1432 | do_cleanups (cleanups); | |
1433 | } | |
1434 | ||
1435 | static void | |
1436 | commands_command (char *arg, int from_tty) | |
1437 | { | |
1438 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1439 | } |
40c03ae8 EZ |
1440 | |
1441 | /* Like commands_command, but instead of reading the commands from | |
1442 | input stream, takes them from an already parsed command structure. | |
1443 | ||
1444 | This is used by cli-script.c to DTRT with breakpoint commands | |
1445 | that are part of if and while bodies. */ | |
1446 | enum command_control_type | |
1447 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1448 | { | |
95a42b64 TT |
1449 | commands_command_1 (arg, 0, cmd); |
1450 | return simple_control; | |
40c03ae8 | 1451 | } |
876fa593 JK |
1452 | |
1453 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1454 | ||
1455 | static int | |
1456 | bp_location_has_shadow (struct bp_location *bl) | |
1457 | { | |
1458 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1459 | return 0; | |
1460 | if (!bl->inserted) | |
1461 | return 0; | |
1462 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1463 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1464 | return 0; |
1465 | return 1; | |
1466 | } | |
1467 | ||
9d497a19 PA |
1468 | /* Update BUF, which is LEN bytes read from the target address |
1469 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1470 | contents. | |
1471 | ||
1472 | If READBUF is not NULL, this buffer must not overlap with the of | |
1473 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1474 | failed assertion internal error will be raised. */ | |
1475 | ||
1476 | static void | |
1477 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1478 | const gdb_byte *writebuf_org, | |
1479 | ULONGEST memaddr, LONGEST len, | |
1480 | struct bp_target_info *target_info, | |
1481 | struct gdbarch *gdbarch) | |
1482 | { | |
1483 | /* Now do full processing of the found relevant range of elements. */ | |
1484 | CORE_ADDR bp_addr = 0; | |
1485 | int bp_size = 0; | |
1486 | int bptoffset = 0; | |
1487 | ||
1488 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1489 | current_program_space->aspace, 0)) | |
1490 | { | |
1491 | /* The breakpoint is inserted in a different address space. */ | |
1492 | return; | |
1493 | } | |
1494 | ||
1495 | /* Addresses and length of the part of the breakpoint that | |
1496 | we need to copy. */ | |
1497 | bp_addr = target_info->placed_address; | |
1498 | bp_size = target_info->shadow_len; | |
1499 | ||
1500 | if (bp_addr + bp_size <= memaddr) | |
1501 | { | |
1502 | /* The breakpoint is entirely before the chunk of memory we are | |
1503 | reading. */ | |
1504 | return; | |
1505 | } | |
1506 | ||
1507 | if (bp_addr >= memaddr + len) | |
1508 | { | |
1509 | /* The breakpoint is entirely after the chunk of memory we are | |
1510 | reading. */ | |
1511 | return; | |
1512 | } | |
1513 | ||
1514 | /* Offset within shadow_contents. */ | |
1515 | if (bp_addr < memaddr) | |
1516 | { | |
1517 | /* Only copy the second part of the breakpoint. */ | |
1518 | bp_size -= memaddr - bp_addr; | |
1519 | bptoffset = memaddr - bp_addr; | |
1520 | bp_addr = memaddr; | |
1521 | } | |
1522 | ||
1523 | if (bp_addr + bp_size > memaddr + len) | |
1524 | { | |
1525 | /* Only copy the first part of the breakpoint. */ | |
1526 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1527 | } | |
1528 | ||
1529 | if (readbuf != NULL) | |
1530 | { | |
1531 | /* Verify that the readbuf buffer does not overlap with the | |
1532 | shadow_contents buffer. */ | |
1533 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1534 | || readbuf >= (target_info->shadow_contents | |
1535 | + target_info->shadow_len)); | |
1536 | ||
1537 | /* Update the read buffer with this inserted breakpoint's | |
1538 | shadow. */ | |
1539 | memcpy (readbuf + bp_addr - memaddr, | |
1540 | target_info->shadow_contents + bptoffset, bp_size); | |
1541 | } | |
1542 | else | |
1543 | { | |
1544 | const unsigned char *bp; | |
0d5ed153 MR |
1545 | CORE_ADDR addr = target_info->reqstd_address; |
1546 | int placed_size; | |
9d497a19 PA |
1547 | |
1548 | /* Update the shadow with what we want to write to memory. */ | |
1549 | memcpy (target_info->shadow_contents + bptoffset, | |
1550 | writebuf_org + bp_addr - memaddr, bp_size); | |
1551 | ||
1552 | /* Determine appropriate breakpoint contents and size for this | |
1553 | address. */ | |
0d5ed153 | 1554 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1555 | |
1556 | /* Update the final write buffer with this inserted | |
1557 | breakpoint's INSN. */ | |
1558 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1559 | } | |
1560 | } | |
1561 | ||
8defab1a | 1562 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1563 | by replacing any memory breakpoints with their shadowed contents. |
1564 | ||
35c63cd8 JB |
1565 | If READBUF is not NULL, this buffer must not overlap with any of |
1566 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1567 | a failed assertion internal error will be raised. | |
1568 | ||
876fa593 | 1569 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1570 | bl->address - bp_location_placed_address_before_address_max |
1571 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1572 | The range we were requested to resolve shadows for is: |
1573 | memaddr ... memaddr + len | |
1574 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1575 | memaddr + len <= (bl->address |
1576 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1577 | and: |
35df4500 | 1578 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1579 | |
8defab1a | 1580 | void |
f0ba3972 PA |
1581 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1582 | const gdb_byte *writebuf_org, | |
1583 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1584 | { |
4a64f543 MS |
1585 | /* Left boundary, right boundary and median element of our binary |
1586 | search. */ | |
876fa593 | 1587 | unsigned bc_l, bc_r, bc; |
9d497a19 | 1588 | size_t i; |
876fa593 | 1589 | |
4a64f543 MS |
1590 | /* Find BC_L which is a leftmost element which may affect BUF |
1591 | content. It is safe to report lower value but a failure to | |
1592 | report higher one. */ | |
876fa593 JK |
1593 | |
1594 | bc_l = 0; | |
1595 | bc_r = bp_location_count; | |
1596 | while (bc_l + 1 < bc_r) | |
1597 | { | |
35df4500 | 1598 | struct bp_location *bl; |
876fa593 JK |
1599 | |
1600 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1601 | bl = bp_location[bc]; |
876fa593 | 1602 | |
4a64f543 MS |
1603 | /* Check first BL->ADDRESS will not overflow due to the added |
1604 | constant. Then advance the left boundary only if we are sure | |
1605 | the BC element can in no way affect the BUF content (MEMADDR | |
1606 | to MEMADDR + LEN range). | |
876fa593 | 1607 | |
4a64f543 MS |
1608 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1609 | offset so that we cannot miss a breakpoint with its shadow | |
1610 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1611 | |
35df4500 TJB |
1612 | if ((bl->address + bp_location_shadow_len_after_address_max |
1613 | >= bl->address) | |
1614 | && (bl->address + bp_location_shadow_len_after_address_max | |
1615 | <= memaddr)) | |
876fa593 JK |
1616 | bc_l = bc; |
1617 | else | |
1618 | bc_r = bc; | |
1619 | } | |
1620 | ||
128070bb PA |
1621 | /* Due to the binary search above, we need to make sure we pick the |
1622 | first location that's at BC_L's address. E.g., if there are | |
1623 | multiple locations at the same address, BC_L may end up pointing | |
1624 | at a duplicate location, and miss the "master"/"inserted" | |
1625 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1626 | B: | |
1627 | ||
1628 | L1@A, L2@A, L3@B, ... | |
1629 | ||
1630 | BC_L could end up pointing at location L2, while the "master" | |
1631 | location could be L1. Since the `loc->inserted' flag is only set | |
1632 | on "master" locations, we'd forget to restore the shadow of L1 | |
1633 | and L2. */ | |
1634 | while (bc_l > 0 | |
1635 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1636 | bc_l--; | |
1637 | ||
876fa593 JK |
1638 | /* Now do full processing of the found relevant range of elements. */ |
1639 | ||
1640 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1641 | { |
35df4500 | 1642 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1643 | CORE_ADDR bp_addr = 0; |
1644 | int bp_size = 0; | |
1645 | int bptoffset = 0; | |
1646 | ||
35df4500 TJB |
1647 | /* bp_location array has BL->OWNER always non-NULL. */ |
1648 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1649 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1650 | bl->owner->number); |
ffce0d52 | 1651 | |
e5dd4106 | 1652 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1653 | content. */ |
1654 | ||
35df4500 TJB |
1655 | if (bl->address >= bp_location_placed_address_before_address_max |
1656 | && memaddr + len <= (bl->address | |
1657 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1658 | break; |
1659 | ||
35df4500 | 1660 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1661 | continue; |
6c95b8df | 1662 | |
9d497a19 PA |
1663 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1664 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1665 | } | |
c906108c | 1666 | } |
9d497a19 | 1667 | |
c906108c | 1668 | \f |
c5aa993b | 1669 | |
b775012e LM |
1670 | /* Return true if BPT is either a software breakpoint or a hardware |
1671 | breakpoint. */ | |
1672 | ||
1673 | int | |
1674 | is_breakpoint (const struct breakpoint *bpt) | |
1675 | { | |
1676 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1677 | || bpt->type == bp_hardware_breakpoint |
1678 | || bpt->type == bp_dprintf); | |
b775012e LM |
1679 | } |
1680 | ||
60e1c644 PA |
1681 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1682 | ||
a5606eee | 1683 | static int |
d77f58be | 1684 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1685 | { |
1686 | return (bpt->type == bp_hardware_watchpoint | |
1687 | || bpt->type == bp_read_watchpoint | |
1688 | || bpt->type == bp_access_watchpoint); | |
1689 | } | |
7270d8f2 | 1690 | |
60e1c644 PA |
1691 | /* Return true if BPT is of any watchpoint kind, hardware or |
1692 | software. */ | |
1693 | ||
3a5c3e22 | 1694 | int |
d77f58be | 1695 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1696 | { |
1697 | return (is_hardware_watchpoint (bpt) | |
1698 | || bpt->type == bp_watchpoint); | |
1699 | } | |
1700 | ||
3a5c3e22 PA |
1701 | /* Returns true if the current thread and its running state are safe |
1702 | to evaluate or update watchpoint B. Watchpoints on local | |
1703 | expressions need to be evaluated in the context of the thread that | |
1704 | was current when the watchpoint was created, and, that thread needs | |
1705 | to be stopped to be able to select the correct frame context. | |
1706 | Watchpoints on global expressions can be evaluated on any thread, | |
1707 | and in any state. It is presently left to the target allowing | |
1708 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1709 | |
1710 | static int | |
3a5c3e22 | 1711 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1712 | { |
d0d8b0c6 JK |
1713 | return (b->base.pspace == current_program_space |
1714 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1715 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1716 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1717 | } |
1718 | ||
d0fb5eae JK |
1719 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1720 | associated bp_watchpoint_scope breakpoint. */ | |
1721 | ||
1722 | static void | |
3a5c3e22 | 1723 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1724 | { |
3a5c3e22 | 1725 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1726 | |
1727 | if (b->related_breakpoint != b) | |
1728 | { | |
1729 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1730 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1731 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1732 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1733 | b->related_breakpoint = b; | |
1734 | } | |
1735 | b->disposition = disp_del_at_next_stop; | |
1736 | } | |
1737 | ||
bb9d5f81 PP |
1738 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1739 | watchpoint W. */ | |
1740 | ||
1741 | static struct value * | |
1742 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1743 | { | |
1744 | struct value *bit_val; | |
1745 | ||
1746 | if (val == NULL) | |
1747 | return NULL; | |
1748 | ||
1749 | bit_val = allocate_value (value_type (val)); | |
1750 | ||
1751 | unpack_value_bitfield (bit_val, | |
1752 | w->val_bitpos, | |
1753 | w->val_bitsize, | |
1754 | value_contents_for_printing (val), | |
1755 | value_offset (val), | |
1756 | val); | |
1757 | ||
1758 | return bit_val; | |
1759 | } | |
1760 | ||
567e1b4e JB |
1761 | /* Assuming that B is a watchpoint: |
1762 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1763 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1764 | - Evaluate the condition if there is one, and store the result |
1765 | in b->loc->cond. | |
a5606eee VP |
1766 | - Update the list of values that must be watched in B->loc. |
1767 | ||
4a64f543 MS |
1768 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1769 | nothing. If this is local watchpoint that is out of scope, delete | |
1770 | it. | |
1771 | ||
1772 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1773 | removed + inserted on each stop here. Normal breakpoints must | |
1774 | never be removed because they might be missed by a running thread | |
1775 | when debugging in non-stop mode. On the other hand, hardware | |
1776 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1777 | to each LWP since they are stored in each LWP's hardware debug | |
1778 | registers. Therefore, such LWP must be stopped first in order to | |
1779 | be able to modify its hardware watchpoints. | |
1780 | ||
1781 | Hardware watchpoints must be reset exactly once after being | |
1782 | presented to the user. It cannot be done sooner, because it would | |
1783 | reset the data used to present the watchpoint hit to the user. And | |
1784 | it must not be done later because it could display the same single | |
1785 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1786 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1787 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1788 | not user-visible - its hit is suppressed if the memory content has | |
1789 | not changed. | |
1790 | ||
1791 | The following constraints influence the location where we can reset | |
1792 | hardware watchpoints: | |
1793 | ||
1794 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1795 | called several times when GDB stops. | |
1796 | ||
1797 | [linux] | |
1798 | * Multiple hardware watchpoints can be hit at the same time, | |
1799 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1800 | hit at a time as the reason for stopping, and all the other hits | |
1801 | are presented later, one after the other, each time the user | |
1802 | requests the execution to be resumed. Execution is not resumed | |
1803 | for the threads still having pending hit event stored in | |
1804 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1805 | the inferior on the first stop the thread hit event is kept being | |
1806 | reported from its cached value by linux_nat_stopped_data_address | |
1807 | until the real thread resume happens after the watchpoint gets | |
1808 | presented and thus its LWP_INFO->STATUS gets reset. | |
1809 | ||
1810 | Therefore the hardware watchpoint hit can get safely reset on the | |
1811 | watchpoint removal from inferior. */ | |
a79d3c27 | 1812 | |
b40ce68a | 1813 | static void |
3a5c3e22 | 1814 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1815 | { |
a5606eee | 1816 | int within_current_scope; |
a5606eee | 1817 | struct frame_id saved_frame_id; |
66076460 | 1818 | int frame_saved; |
a5606eee | 1819 | |
f6bc2008 PA |
1820 | /* If this is a local watchpoint, we only want to check if the |
1821 | watchpoint frame is in scope if the current thread is the thread | |
1822 | that was used to create the watchpoint. */ | |
1823 | if (!watchpoint_in_thread_scope (b)) | |
1824 | return; | |
1825 | ||
3a5c3e22 | 1826 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1827 | return; |
1828 | ||
66076460 | 1829 | frame_saved = 0; |
a5606eee VP |
1830 | |
1831 | /* Determine if the watchpoint is within scope. */ | |
1832 | if (b->exp_valid_block == NULL) | |
1833 | within_current_scope = 1; | |
1834 | else | |
1835 | { | |
b5db5dfc UW |
1836 | struct frame_info *fi = get_current_frame (); |
1837 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1838 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1839 | ||
c9cf6e20 MG |
1840 | /* If we're at a point where the stack has been destroyed |
1841 | (e.g. in a function epilogue), unwinding may not work | |
1842 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1843 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1844 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1845 | return; |
66076460 DJ |
1846 | |
1847 | /* Save the current frame's ID so we can restore it after | |
1848 | evaluating the watchpoint expression on its own frame. */ | |
1849 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1850 | took a frame parameter, so that we didn't have to change the | |
1851 | selected frame. */ | |
1852 | frame_saved = 1; | |
1853 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1854 | ||
a5606eee VP |
1855 | fi = frame_find_by_id (b->watchpoint_frame); |
1856 | within_current_scope = (fi != NULL); | |
1857 | if (within_current_scope) | |
1858 | select_frame (fi); | |
1859 | } | |
1860 | ||
b5db5dfc UW |
1861 | /* We don't free locations. They are stored in the bp_location array |
1862 | and update_global_location_list will eventually delete them and | |
1863 | remove breakpoints if needed. */ | |
3a5c3e22 | 1864 | b->base.loc = NULL; |
b5db5dfc | 1865 | |
a5606eee VP |
1866 | if (within_current_scope && reparse) |
1867 | { | |
bbc13ae3 | 1868 | const char *s; |
d63d0675 | 1869 | |
a5606eee VP |
1870 | if (b->exp) |
1871 | { | |
1872 | xfree (b->exp); | |
1873 | b->exp = NULL; | |
1874 | } | |
d63d0675 | 1875 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1876 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1877 | /* If the meaning of expression itself changed, the old value is |
1878 | no longer relevant. We don't want to report a watchpoint hit | |
1879 | to the user when the old value and the new value may actually | |
1880 | be completely different objects. */ | |
1881 | value_free (b->val); | |
fa4727a6 DJ |
1882 | b->val = NULL; |
1883 | b->val_valid = 0; | |
60e1c644 PA |
1884 | |
1885 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1886 | expression is stored in the breakpoint object, not in the | |
1887 | locations (re)created below. */ | |
3a5c3e22 | 1888 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1889 | { |
1890 | if (b->cond_exp != NULL) | |
1891 | { | |
1892 | xfree (b->cond_exp); | |
1893 | b->cond_exp = NULL; | |
1894 | } | |
1895 | ||
3a5c3e22 | 1896 | s = b->base.cond_string; |
1bb9788d | 1897 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1898 | } |
a5606eee | 1899 | } |
a5606eee VP |
1900 | |
1901 | /* If we failed to parse the expression, for example because | |
1902 | it refers to a global variable in a not-yet-loaded shared library, | |
1903 | don't try to insert watchpoint. We don't automatically delete | |
1904 | such watchpoint, though, since failure to parse expression | |
1905 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1906 | if (!target_has_execution) |
2d134ed3 PA |
1907 | { |
1908 | /* Without execution, memory can't change. No use to try and | |
1909 | set watchpoint locations. The watchpoint will be reset when | |
1910 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1911 | if (!can_use_hw_watchpoints) |
1912 | { | |
1913 | if (b->base.ops->works_in_software_mode (&b->base)) | |
1914 | b->base.type = bp_watchpoint; | |
1915 | else | |
638aa5a1 AB |
1916 | error (_("Can't set read/access watchpoint when " |
1917 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1918 | } |
2d134ed3 PA |
1919 | } |
1920 | else if (within_current_scope && b->exp) | |
a5606eee | 1921 | { |
0cf6dd15 | 1922 | int pc = 0; |
fa4727a6 | 1923 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1924 | struct program_space *frame_pspace; |
a5606eee | 1925 | |
3a1115a0 | 1926 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain, 0); |
a5606eee | 1927 | |
a5606eee VP |
1928 | /* Avoid setting b->val if it's already set. The meaning of |
1929 | b->val is 'the last value' user saw, and we should update | |
1930 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1931 | happens, the code that reports it updates b->val directly. |
1932 | We don't keep track of the memory value for masked | |
1933 | watchpoints. */ | |
3a5c3e22 | 1934 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 | 1935 | { |
bb9d5f81 PP |
1936 | if (b->val_bitsize != 0) |
1937 | { | |
1938 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1939 | if (v != NULL) | |
1940 | release_value (v); | |
1941 | } | |
fa4727a6 DJ |
1942 | b->val = v; |
1943 | b->val_valid = 1; | |
1944 | } | |
a5606eee | 1945 | |
2d134ed3 PA |
1946 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1947 | ||
a5606eee | 1948 | /* Look at each value on the value chain. */ |
9fa40276 | 1949 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1950 | { |
1951 | /* If it's a memory location, and GDB actually needed | |
1952 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1953 | must watch it. If the first value returned is |
1954 | still lazy, that means an error occurred reading it; | |
1955 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1956 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1957 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1958 | { |
1959 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1960 | |
a5606eee VP |
1961 | /* We only watch structs and arrays if user asked |
1962 | for it explicitly, never if they just happen to | |
1963 | appear in the middle of some value chain. */ | |
fa4727a6 | 1964 | if (v == result |
a5606eee VP |
1965 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1966 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1967 | { | |
1968 | CORE_ADDR addr; | |
744a8059 | 1969 | int type; |
a5606eee | 1970 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1971 | int bitpos = 0, bitsize = 0; |
1972 | ||
1973 | if (value_bitsize (v) != 0) | |
1974 | { | |
1975 | /* Extract the bit parameters out from the bitfield | |
1976 | sub-expression. */ | |
1977 | bitpos = value_bitpos (v); | |
1978 | bitsize = value_bitsize (v); | |
1979 | } | |
1980 | else if (v == result && b->val_bitsize != 0) | |
1981 | { | |
1982 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1983 | lvalue whose bit parameters are saved in the fields | |
1984 | VAL_BITPOS and VAL_BITSIZE. */ | |
1985 | bitpos = b->val_bitpos; | |
1986 | bitsize = b->val_bitsize; | |
1987 | } | |
a5606eee | 1988 | |
42ae5230 | 1989 | addr = value_address (v); |
bb9d5f81 PP |
1990 | if (bitsize != 0) |
1991 | { | |
1992 | /* Skip the bytes that don't contain the bitfield. */ | |
1993 | addr += bitpos / 8; | |
1994 | } | |
1995 | ||
a5606eee | 1996 | type = hw_write; |
3a5c3e22 | 1997 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1998 | type = hw_read; |
3a5c3e22 | 1999 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 2000 | type = hw_access; |
3a5c3e22 PA |
2001 | |
2002 | loc = allocate_bp_location (&b->base); | |
2003 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
2004 | ; |
2005 | *tmp = loc; | |
a6d9a66e | 2006 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
2007 | |
2008 | loc->pspace = frame_pspace; | |
a5606eee | 2009 | loc->address = addr; |
bb9d5f81 PP |
2010 | |
2011 | if (bitsize != 0) | |
2012 | { | |
2013 | /* Just cover the bytes that make up the bitfield. */ | |
2014 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2015 | } | |
2016 | else | |
2017 | loc->length = TYPE_LENGTH (value_type (v)); | |
2018 | ||
a5606eee VP |
2019 | loc->watchpoint_type = type; |
2020 | } | |
2021 | } | |
9fa40276 TJB |
2022 | } |
2023 | ||
2024 | /* Change the type of breakpoint between hardware assisted or | |
2025 | an ordinary watchpoint depending on the hardware support | |
2026 | and free hardware slots. REPARSE is set when the inferior | |
2027 | is started. */ | |
a9634178 | 2028 | if (reparse) |
9fa40276 | 2029 | { |
e09342b5 | 2030 | int reg_cnt; |
9fa40276 TJB |
2031 | enum bp_loc_type loc_type; |
2032 | struct bp_location *bl; | |
a5606eee | 2033 | |
a9634178 | 2034 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2035 | |
2036 | if (reg_cnt) | |
9fa40276 TJB |
2037 | { |
2038 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2039 | enum bptype type; |
9fa40276 | 2040 | |
a9634178 TJB |
2041 | /* Use an exact watchpoint when there's only one memory region to be |
2042 | watched, and only one debug register is needed to watch it. */ | |
2043 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2044 | ||
9fa40276 | 2045 | /* We need to determine how many resources are already |
e09342b5 TJB |
2046 | used for all other hardware watchpoints plus this one |
2047 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2048 | this watchpoint in as well. */ |
2049 | ||
2050 | /* If this is a software watchpoint, we try to turn it | |
2051 | to a hardware one -- count resources as if B was of | |
2052 | hardware watchpoint type. */ | |
2053 | type = b->base.type; | |
2054 | if (type == bp_watchpoint) | |
2055 | type = bp_hardware_watchpoint; | |
2056 | ||
2057 | /* This watchpoint may or may not have been placed on | |
2058 | the list yet at this point (it won't be in the list | |
2059 | if we're trying to create it for the first time, | |
2060 | through watch_command), so always account for it | |
2061 | manually. */ | |
2062 | ||
2063 | /* Count resources used by all watchpoints except B. */ | |
2064 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
2065 | ||
2066 | /* Add in the resources needed for B. */ | |
2067 | i += hw_watchpoint_use_count (&b->base); | |
2068 | ||
2069 | target_resources_ok | |
2070 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2071 | if (target_resources_ok <= 0) |
a9634178 | 2072 | { |
3a5c3e22 | 2073 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
2074 | |
2075 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2076 | error (_("Target does not support this type of " |
2077 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2078 | else if (target_resources_ok < 0 && !sw_mode) |
2079 | error (_("There are not enough available hardware " | |
2080 | "resources for this watchpoint.")); | |
a1398e0c PA |
2081 | |
2082 | /* Downgrade to software watchpoint. */ | |
2083 | b->base.type = bp_watchpoint; | |
2084 | } | |
2085 | else | |
2086 | { | |
2087 | /* If this was a software watchpoint, we've just | |
2088 | found we have enough resources to turn it to a | |
2089 | hardware watchpoint. Otherwise, this is a | |
2090 | nop. */ | |
2091 | b->base.type = type; | |
a9634178 | 2092 | } |
9fa40276 | 2093 | } |
3a5c3e22 | 2094 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
638aa5a1 AB |
2095 | { |
2096 | if (!can_use_hw_watchpoints) | |
2097 | error (_("Can't set read/access watchpoint when " | |
2098 | "hardware watchpoints are disabled.")); | |
2099 | else | |
2100 | error (_("Expression cannot be implemented with " | |
2101 | "read/access watchpoint.")); | |
2102 | } | |
9fa40276 | 2103 | else |
3a5c3e22 | 2104 | b->base.type = bp_watchpoint; |
9fa40276 | 2105 | |
3a5c3e22 | 2106 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 2107 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 2108 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
2109 | bl->loc_type = loc_type; |
2110 | } | |
2111 | ||
2112 | for (v = val_chain; v; v = next) | |
2113 | { | |
a5606eee VP |
2114 | next = value_next (v); |
2115 | if (v != b->val) | |
2116 | value_free (v); | |
2117 | } | |
2118 | ||
c7437ca6 PA |
2119 | /* If a software watchpoint is not watching any memory, then the |
2120 | above left it without any location set up. But, | |
2121 | bpstat_stop_status requires a location to be able to report | |
2122 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 2123 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 2124 | { |
3a5c3e22 PA |
2125 | struct breakpoint *base = &b->base; |
2126 | base->loc = allocate_bp_location (base); | |
2127 | base->loc->pspace = frame_pspace; | |
2128 | base->loc->address = -1; | |
2129 | base->loc->length = -1; | |
2130 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 2131 | } |
a5606eee VP |
2132 | } |
2133 | else if (!within_current_scope) | |
7270d8f2 | 2134 | { |
ac74f770 MS |
2135 | printf_filtered (_("\ |
2136 | Watchpoint %d deleted because the program has left the block\n\ | |
2137 | in which its expression is valid.\n"), | |
3a5c3e22 | 2138 | b->base.number); |
d0fb5eae | 2139 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2140 | } |
a5606eee VP |
2141 | |
2142 | /* Restore the selected frame. */ | |
66076460 DJ |
2143 | if (frame_saved) |
2144 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2145 | } |
2146 | ||
a5606eee | 2147 | |
74960c60 | 2148 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2149 | inserted in the inferior. We don't differentiate the type of BL's owner |
2150 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2151 | breakpoint_ops is not defined, because in insert_bp_location, | |
2152 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2153 | static int |
35df4500 | 2154 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2155 | { |
35df4500 | 2156 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2157 | return 0; |
2158 | ||
35df4500 | 2159 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2160 | return 0; |
2161 | ||
35df4500 | 2162 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2163 | return 0; |
2164 | ||
f8eba3c6 TT |
2165 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2166 | return 0; | |
2167 | ||
56710373 PA |
2168 | /* This is set for example, when we're attached to the parent of a |
2169 | vfork, and have detached from the child. The child is running | |
2170 | free, and we expect it to do an exec or exit, at which point the | |
2171 | OS makes the parent schedulable again (and the target reports | |
2172 | that the vfork is done). Until the child is done with the shared | |
2173 | memory region, do not insert breakpoints in the parent, otherwise | |
2174 | the child could still trip on the parent's breakpoints. Since | |
2175 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2176 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2177 | return 0; |
2178 | ||
31e77af2 PA |
2179 | /* Don't insert a breakpoint if we're trying to step past its |
2180 | location. */ | |
2181 | if ((bl->loc_type == bp_loc_software_breakpoint | |
2182 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2183 | && stepping_past_instruction_at (bl->pspace->aspace, | |
2184 | bl->address)) | |
e558d7c1 PA |
2185 | { |
2186 | if (debug_infrun) | |
2187 | { | |
2188 | fprintf_unfiltered (gdb_stdlog, | |
2189 | "infrun: skipping breakpoint: " | |
2190 | "stepping past insn at: %s\n", | |
2191 | paddress (bl->gdbarch, bl->address)); | |
2192 | } | |
2193 | return 0; | |
2194 | } | |
31e77af2 | 2195 | |
963f9c80 PA |
2196 | /* Don't insert watchpoints if we're trying to step past the |
2197 | instruction that triggered one. */ | |
2198 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2199 | && stepping_past_nonsteppable_watchpoint ()) | |
2200 | { | |
2201 | if (debug_infrun) | |
2202 | { | |
2203 | fprintf_unfiltered (gdb_stdlog, | |
2204 | "infrun: stepping past non-steppable watchpoint. " | |
2205 | "skipping watchpoint at %s:%d\n", | |
2206 | paddress (bl->gdbarch, bl->address), | |
2207 | bl->length); | |
2208 | } | |
2209 | return 0; | |
2210 | } | |
2211 | ||
74960c60 VP |
2212 | return 1; |
2213 | } | |
2214 | ||
934709f0 PW |
2215 | /* Same as should_be_inserted but does the check assuming |
2216 | that the location is not duplicated. */ | |
2217 | ||
2218 | static int | |
2219 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2220 | { | |
2221 | int result; | |
2222 | const int save_duplicate = bl->duplicate; | |
2223 | ||
2224 | bl->duplicate = 0; | |
2225 | result = should_be_inserted (bl); | |
2226 | bl->duplicate = save_duplicate; | |
2227 | return result; | |
2228 | } | |
2229 | ||
b775012e LM |
2230 | /* Parses a conditional described by an expression COND into an |
2231 | agent expression bytecode suitable for evaluation | |
2232 | by the bytecode interpreter. Return NULL if there was | |
2233 | any error during parsing. */ | |
2234 | ||
2235 | static struct agent_expr * | |
2236 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2237 | { | |
2238 | struct agent_expr *aexpr = NULL; | |
b775012e LM |
2239 | |
2240 | if (!cond) | |
2241 | return NULL; | |
2242 | ||
2243 | /* We don't want to stop processing, so catch any errors | |
2244 | that may show up. */ | |
492d29ea | 2245 | TRY |
b775012e LM |
2246 | { |
2247 | aexpr = gen_eval_for_expr (scope, cond); | |
2248 | } | |
2249 | ||
492d29ea | 2250 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2251 | { |
2252 | /* If we got here, it means the condition could not be parsed to a valid | |
2253 | bytecode expression and thus can't be evaluated on the target's side. | |
2254 | It's no use iterating through the conditions. */ | |
2255 | return NULL; | |
2256 | } | |
492d29ea | 2257 | END_CATCH |
b775012e LM |
2258 | |
2259 | /* We have a valid agent expression. */ | |
2260 | return aexpr; | |
2261 | } | |
2262 | ||
2263 | /* Based on location BL, create a list of breakpoint conditions to be | |
2264 | passed on to the target. If we have duplicated locations with different | |
2265 | conditions, we will add such conditions to the list. The idea is that the | |
2266 | target will evaluate the list of conditions and will only notify GDB when | |
2267 | one of them is true. */ | |
2268 | ||
2269 | static void | |
2270 | build_target_condition_list (struct bp_location *bl) | |
2271 | { | |
2272 | struct bp_location **locp = NULL, **loc2p; | |
2273 | int null_condition_or_parse_error = 0; | |
2274 | int modified = bl->needs_update; | |
2275 | struct bp_location *loc; | |
2276 | ||
8b4f3082 PA |
2277 | /* Release conditions left over from a previous insert. */ |
2278 | VEC_free (agent_expr_p, bl->target_info.conditions); | |
2279 | ||
b775012e LM |
2280 | /* This is only meaningful if the target is |
2281 | evaluating conditions and if the user has | |
2282 | opted for condition evaluation on the target's | |
2283 | side. */ | |
2284 | if (gdb_evaluates_breakpoint_condition_p () | |
2285 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2286 | return; | |
2287 | ||
2288 | /* Do a first pass to check for locations with no assigned | |
2289 | conditions or conditions that fail to parse to a valid agent expression | |
2290 | bytecode. If any of these happen, then it's no use to send conditions | |
2291 | to the target since this location will always trigger and generate a | |
2292 | response back to GDB. */ | |
2293 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2294 | { | |
2295 | loc = (*loc2p); | |
2296 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2297 | { | |
2298 | if (modified) | |
2299 | { | |
2300 | struct agent_expr *aexpr; | |
2301 | ||
2302 | /* Re-parse the conditions since something changed. In that | |
2303 | case we already freed the condition bytecodes (see | |
2304 | force_breakpoint_reinsertion). We just | |
2305 | need to parse the condition to bytecodes again. */ | |
2306 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2307 | loc->cond_bytecode = aexpr; | |
2308 | ||
2309 | /* Check if we managed to parse the conditional expression | |
2310 | correctly. If not, we will not send this condition | |
2311 | to the target. */ | |
2312 | if (aexpr) | |
2313 | continue; | |
2314 | } | |
2315 | ||
2316 | /* If we have a NULL bytecode expression, it means something | |
2317 | went wrong or we have a null condition expression. */ | |
2318 | if (!loc->cond_bytecode) | |
2319 | { | |
2320 | null_condition_or_parse_error = 1; | |
2321 | break; | |
2322 | } | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | /* If any of these happened, it means we will have to evaluate the conditions | |
2327 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2328 | for all the other duplicate locations, thus we free all of them here. | |
2329 | ||
2330 | This is so we have a finer control over which locations' conditions are | |
2331 | being evaluated by GDB or the remote stub. */ | |
2332 | if (null_condition_or_parse_error) | |
2333 | { | |
2334 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2335 | { | |
2336 | loc = (*loc2p); | |
2337 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2338 | { | |
2339 | /* Only go as far as the first NULL bytecode is | |
2340 | located. */ | |
2341 | if (!loc->cond_bytecode) | |
2342 | return; | |
2343 | ||
2344 | free_agent_expr (loc->cond_bytecode); | |
2345 | loc->cond_bytecode = NULL; | |
2346 | } | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2351 | for this location's address. */ | |
2352 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2353 | { | |
2354 | loc = (*loc2p); | |
2355 | if (loc->cond | |
2356 | && is_breakpoint (loc->owner) | |
2357 | && loc->pspace->num == bl->pspace->num | |
2358 | && loc->owner->enable_state == bp_enabled | |
2359 | && loc->enabled) | |
2360 | /* Add the condition to the vector. This will be used later to send the | |
2361 | conditions to the target. */ | |
2362 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2363 | loc->cond_bytecode); | |
2364 | } | |
2365 | ||
2366 | return; | |
2367 | } | |
2368 | ||
d3ce09f5 SS |
2369 | /* Parses a command described by string CMD into an agent expression |
2370 | bytecode suitable for evaluation by the bytecode interpreter. | |
2371 | Return NULL if there was any error during parsing. */ | |
2372 | ||
2373 | static struct agent_expr * | |
2374 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2375 | { | |
2376 | struct cleanup *old_cleanups = 0; | |
2377 | struct expression *expr, **argvec; | |
2378 | struct agent_expr *aexpr = NULL; | |
bbc13ae3 KS |
2379 | const char *cmdrest; |
2380 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2381 | struct format_piece *fpieces; |
2382 | int nargs; | |
2383 | struct gdbarch *gdbarch = get_current_arch (); | |
2384 | ||
2385 | if (!cmd) | |
2386 | return NULL; | |
2387 | ||
2388 | cmdrest = cmd; | |
2389 | ||
2390 | if (*cmdrest == ',') | |
2391 | ++cmdrest; | |
bbc13ae3 | 2392 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2393 | |
2394 | if (*cmdrest++ != '"') | |
2395 | error (_("No format string following the location")); | |
2396 | ||
2397 | format_start = cmdrest; | |
2398 | ||
2399 | fpieces = parse_format_string (&cmdrest); | |
2400 | ||
2401 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2402 | ||
2403 | format_end = cmdrest; | |
2404 | ||
2405 | if (*cmdrest++ != '"') | |
2406 | error (_("Bad format string, non-terminated '\"'.")); | |
2407 | ||
bbc13ae3 | 2408 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2409 | |
2410 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2411 | error (_("Invalid argument syntax")); | |
2412 | ||
2413 | if (*cmdrest == ',') | |
2414 | cmdrest++; | |
bbc13ae3 | 2415 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2416 | |
2417 | /* For each argument, make an expression. */ | |
2418 | ||
2419 | argvec = (struct expression **) alloca (strlen (cmd) | |
2420 | * sizeof (struct expression *)); | |
2421 | ||
2422 | nargs = 0; | |
2423 | while (*cmdrest != '\0') | |
2424 | { | |
bbc13ae3 | 2425 | const char *cmd1; |
d3ce09f5 SS |
2426 | |
2427 | cmd1 = cmdrest; | |
2428 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2429 | argvec[nargs++] = expr; | |
2430 | cmdrest = cmd1; | |
2431 | if (*cmdrest == ',') | |
2432 | ++cmdrest; | |
2433 | } | |
2434 | ||
2435 | /* We don't want to stop processing, so catch any errors | |
2436 | that may show up. */ | |
492d29ea | 2437 | TRY |
d3ce09f5 SS |
2438 | { |
2439 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2440 | format_start, format_end - format_start, | |
2441 | fpieces, nargs, argvec); | |
2442 | } | |
492d29ea | 2443 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2444 | { |
2445 | /* If we got here, it means the command could not be parsed to a valid | |
2446 | bytecode expression and thus can't be evaluated on the target's side. | |
2447 | It's no use iterating through the other commands. */ | |
492d29ea | 2448 | aexpr = NULL; |
d3ce09f5 | 2449 | } |
492d29ea PA |
2450 | END_CATCH |
2451 | ||
2452 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2453 | |
d3ce09f5 SS |
2454 | /* We have a valid agent expression, return it. */ |
2455 | return aexpr; | |
2456 | } | |
2457 | ||
2458 | /* Based on location BL, create a list of breakpoint commands to be | |
2459 | passed on to the target. If we have duplicated locations with | |
2460 | different commands, we will add any such to the list. */ | |
2461 | ||
2462 | static void | |
2463 | build_target_command_list (struct bp_location *bl) | |
2464 | { | |
2465 | struct bp_location **locp = NULL, **loc2p; | |
2466 | int null_command_or_parse_error = 0; | |
2467 | int modified = bl->needs_update; | |
2468 | struct bp_location *loc; | |
2469 | ||
8b4f3082 PA |
2470 | /* Release commands left over from a previous insert. */ |
2471 | VEC_free (agent_expr_p, bl->target_info.tcommands); | |
2472 | ||
41fac0cf | 2473 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2474 | return; |
2475 | ||
41fac0cf PA |
2476 | /* For now, limit to agent-style dprintf breakpoints. */ |
2477 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2478 | return; |
2479 | ||
41fac0cf PA |
2480 | /* For now, if we have any duplicate location that isn't a dprintf, |
2481 | don't install the target-side commands, as that would make the | |
2482 | breakpoint not be reported to the core, and we'd lose | |
2483 | control. */ | |
2484 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2485 | { | |
2486 | loc = (*loc2p); | |
2487 | if (is_breakpoint (loc->owner) | |
2488 | && loc->pspace->num == bl->pspace->num | |
2489 | && loc->owner->type != bp_dprintf) | |
2490 | return; | |
2491 | } | |
2492 | ||
d3ce09f5 SS |
2493 | /* Do a first pass to check for locations with no assigned |
2494 | conditions or conditions that fail to parse to a valid agent expression | |
2495 | bytecode. If any of these happen, then it's no use to send conditions | |
2496 | to the target since this location will always trigger and generate a | |
2497 | response back to GDB. */ | |
2498 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2499 | { | |
2500 | loc = (*loc2p); | |
2501 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2502 | { | |
2503 | if (modified) | |
2504 | { | |
2505 | struct agent_expr *aexpr; | |
2506 | ||
2507 | /* Re-parse the commands since something changed. In that | |
2508 | case we already freed the command bytecodes (see | |
2509 | force_breakpoint_reinsertion). We just | |
2510 | need to parse the command to bytecodes again. */ | |
2511 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2512 | loc->owner->extra_string); | |
2513 | loc->cmd_bytecode = aexpr; | |
2514 | ||
2515 | if (!aexpr) | |
2516 | continue; | |
2517 | } | |
2518 | ||
2519 | /* If we have a NULL bytecode expression, it means something | |
2520 | went wrong or we have a null command expression. */ | |
2521 | if (!loc->cmd_bytecode) | |
2522 | { | |
2523 | null_command_or_parse_error = 1; | |
2524 | break; | |
2525 | } | |
2526 | } | |
2527 | } | |
2528 | ||
2529 | /* If anything failed, then we're not doing target-side commands, | |
2530 | and so clean up. */ | |
2531 | if (null_command_or_parse_error) | |
2532 | { | |
2533 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2534 | { | |
2535 | loc = (*loc2p); | |
2536 | if (is_breakpoint (loc->owner) | |
2537 | && loc->pspace->num == bl->pspace->num) | |
2538 | { | |
2539 | /* Only go as far as the first NULL bytecode is | |
2540 | located. */ | |
40fb6c5e | 2541 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2542 | return; |
2543 | ||
40fb6c5e HZ |
2544 | free_agent_expr (loc->cmd_bytecode); |
2545 | loc->cmd_bytecode = NULL; | |
d3ce09f5 SS |
2546 | } |
2547 | } | |
2548 | } | |
2549 | ||
2550 | /* No NULL commands or failed bytecode generation. Build a command list | |
2551 | for this location's address. */ | |
2552 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2553 | { | |
2554 | loc = (*loc2p); | |
2555 | if (loc->owner->extra_string | |
2556 | && is_breakpoint (loc->owner) | |
2557 | && loc->pspace->num == bl->pspace->num | |
2558 | && loc->owner->enable_state == bp_enabled | |
2559 | && loc->enabled) | |
2560 | /* Add the command to the vector. This will be used later | |
2561 | to send the commands to the target. */ | |
2562 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2563 | loc->cmd_bytecode); | |
2564 | } | |
2565 | ||
2566 | bl->target_info.persist = 0; | |
2567 | /* Maybe flag this location as persistent. */ | |
2568 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2569 | bl->target_info.persist = 1; | |
2570 | } | |
2571 | ||
35df4500 TJB |
2572 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2573 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2574 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2575 | Returns 0 for success, 1 if the bp_location type is not supported or |
2576 | -1 for failure. | |
879bfdc2 | 2577 | |
4a64f543 MS |
2578 | NOTE drow/2003-09-09: This routine could be broken down to an |
2579 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2580 | static int |
35df4500 | 2581 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2582 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2583 | int *disabled_breaks, |
dd61ec5c MW |
2584 | int *hw_breakpoint_error, |
2585 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2586 | { |
0000e5cc PA |
2587 | enum errors bp_err = GDB_NO_ERROR; |
2588 | const char *bp_err_message = NULL; | |
879bfdc2 | 2589 | |
b775012e | 2590 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2591 | return 0; |
2592 | ||
35c63cd8 JB |
2593 | /* Note we don't initialize bl->target_info, as that wipes out |
2594 | the breakpoint location's shadow_contents if the breakpoint | |
2595 | is still inserted at that location. This in turn breaks | |
2596 | target_read_memory which depends on these buffers when | |
2597 | a memory read is requested at the breakpoint location: | |
2598 | Once the target_info has been wiped, we fail to see that | |
2599 | we have a breakpoint inserted at that address and thus | |
2600 | read the breakpoint instead of returning the data saved in | |
2601 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2602 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2603 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2604 | bl->target_info.length = bl->length; |
8181d85f | 2605 | |
b775012e LM |
2606 | /* When working with target-side conditions, we must pass all the conditions |
2607 | for the same breakpoint address down to the target since GDB will not | |
2608 | insert those locations. With a list of breakpoint conditions, the target | |
2609 | can decide when to stop and notify GDB. */ | |
2610 | ||
2611 | if (is_breakpoint (bl->owner)) | |
2612 | { | |
2613 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2614 | build_target_command_list (bl); |
2615 | /* Reset the modification marker. */ | |
b775012e LM |
2616 | bl->needs_update = 0; |
2617 | } | |
2618 | ||
35df4500 TJB |
2619 | if (bl->loc_type == bp_loc_software_breakpoint |
2620 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2621 | { |
35df4500 | 2622 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2623 | { |
2624 | /* If the explicitly specified breakpoint type | |
2625 | is not hardware breakpoint, check the memory map to see | |
2626 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2627 | |
765dc015 VP |
2628 | Two important cases are: |
2629 | - location type is not hardware breakpoint, memory | |
2630 | is readonly. We change the type of the location to | |
2631 | hardware breakpoint. | |
4a64f543 MS |
2632 | - location type is hardware breakpoint, memory is |
2633 | read-write. This means we've previously made the | |
2634 | location hardware one, but then the memory map changed, | |
2635 | so we undo. | |
765dc015 | 2636 | |
4a64f543 MS |
2637 | When breakpoints are removed, remove_breakpoints will use |
2638 | location types we've just set here, the only possible | |
2639 | problem is that memory map has changed during running | |
2640 | program, but it's not going to work anyway with current | |
2641 | gdb. */ | |
765dc015 | 2642 | struct mem_region *mr |
0d5ed153 | 2643 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2644 | |
2645 | if (mr) | |
2646 | { | |
2647 | if (automatic_hardware_breakpoints) | |
2648 | { | |
765dc015 VP |
2649 | enum bp_loc_type new_type; |
2650 | ||
2651 | if (mr->attrib.mode != MEM_RW) | |
2652 | new_type = bp_loc_hardware_breakpoint; | |
2653 | else | |
2654 | new_type = bp_loc_software_breakpoint; | |
2655 | ||
35df4500 | 2656 | if (new_type != bl->loc_type) |
765dc015 VP |
2657 | { |
2658 | static int said = 0; | |
cc59ec59 | 2659 | |
35df4500 | 2660 | bl->loc_type = new_type; |
765dc015 VP |
2661 | if (!said) |
2662 | { | |
3e43a32a MS |
2663 | fprintf_filtered (gdb_stdout, |
2664 | _("Note: automatically using " | |
2665 | "hardware breakpoints for " | |
2666 | "read-only addresses.\n")); | |
765dc015 VP |
2667 | said = 1; |
2668 | } | |
2669 | } | |
2670 | } | |
35df4500 | 2671 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2672 | && mr->attrib.mode != MEM_RW) |
2673 | { | |
2674 | fprintf_unfiltered (tmp_error_stream, | |
2675 | _("Cannot insert breakpoint %d.\n" | |
2676 | "Cannot set software breakpoint " | |
2677 | "at read-only address %s\n"), | |
2678 | bl->owner->number, | |
2679 | paddress (bl->gdbarch, bl->address)); | |
2680 | return 1; | |
2681 | } | |
765dc015 VP |
2682 | } |
2683 | } | |
2684 | ||
879bfdc2 DJ |
2685 | /* First check to see if we have to handle an overlay. */ |
2686 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2687 | || bl->section == NULL |
2688 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2689 | { |
2690 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2691 | TRY |
dd61ec5c | 2692 | { |
0000e5cc PA |
2693 | int val; |
2694 | ||
dd61ec5c | 2695 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2696 | if (val) |
2697 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2698 | } |
492d29ea | 2699 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2700 | { |
0000e5cc PA |
2701 | bp_err = e.error; |
2702 | bp_err_message = e.message; | |
dd61ec5c | 2703 | } |
492d29ea | 2704 | END_CATCH |
879bfdc2 DJ |
2705 | } |
2706 | else | |
2707 | { | |
4a64f543 | 2708 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2709 | Shall we set a breakpoint at the LMA? */ |
2710 | if (!overlay_events_enabled) | |
2711 | { | |
2712 | /* Yes -- overlay event support is not active, | |
2713 | so we must try to set a breakpoint at the LMA. | |
2714 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2715 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2716 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2717 | bl->owner->number); |
879bfdc2 DJ |
2718 | else |
2719 | { | |
35df4500 TJB |
2720 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2721 | bl->section); | |
879bfdc2 | 2722 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2723 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2724 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2725 | |
2726 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2727 | TRY |
0000e5cc PA |
2728 | { |
2729 | int val; | |
2730 | ||
2731 | val = target_insert_breakpoint (bl->gdbarch, | |
2732 | &bl->overlay_target_info); | |
2733 | if (val) | |
2734 | bp_err = GENERIC_ERROR; | |
2735 | } | |
492d29ea | 2736 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2737 | { |
2738 | bp_err = e.error; | |
2739 | bp_err_message = e.message; | |
2740 | } | |
492d29ea | 2741 | END_CATCH |
0000e5cc PA |
2742 | |
2743 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2744 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2745 | "Overlay breakpoint %d " |
2746 | "failed: in ROM?\n", | |
35df4500 | 2747 | bl->owner->number); |
879bfdc2 DJ |
2748 | } |
2749 | } | |
2750 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2751 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2752 | { |
2753 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2754 | TRY |
dd61ec5c | 2755 | { |
0000e5cc PA |
2756 | int val; |
2757 | ||
dd61ec5c | 2758 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2759 | if (val) |
2760 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2761 | } |
492d29ea | 2762 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2763 | { |
0000e5cc PA |
2764 | bp_err = e.error; |
2765 | bp_err_message = e.message; | |
dd61ec5c | 2766 | } |
492d29ea | 2767 | END_CATCH |
879bfdc2 DJ |
2768 | } |
2769 | else | |
2770 | { | |
2771 | /* No. This breakpoint will not be inserted. | |
2772 | No error, but do not mark the bp as 'inserted'. */ | |
2773 | return 0; | |
2774 | } | |
2775 | } | |
2776 | ||
0000e5cc | 2777 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2778 | { |
2779 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2780 | |
2781 | /* In some cases, we might not be able to insert a | |
2782 | breakpoint in a shared library that has already been | |
2783 | removed, but we have not yet processed the shlib unload | |
2784 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2785 | breakpoint insertion themselves can't tell why the |
2786 | breakpoint insertion failed (e.g., the remote target | |
2787 | doesn't define error codes), so we must treat generic | |
2788 | errors as memory errors. */ | |
0000e5cc | 2789 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2790 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2791 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2792 | || shared_objfile_contains_address_p (bl->pspace, |
2793 | bl->address))) | |
879bfdc2 | 2794 | { |
4a64f543 | 2795 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2796 | bl->shlib_disabled = 1; |
8d3788bd | 2797 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2798 | if (!*disabled_breaks) |
2799 | { | |
2800 | fprintf_unfiltered (tmp_error_stream, | |
2801 | "Cannot insert breakpoint %d.\n", | |
2802 | bl->owner->number); | |
2803 | fprintf_unfiltered (tmp_error_stream, | |
2804 | "Temporarily disabling shared " | |
2805 | "library breakpoints:\n"); | |
2806 | } | |
2807 | *disabled_breaks = 1; | |
879bfdc2 | 2808 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2809 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2810 | return 0; |
879bfdc2 DJ |
2811 | } |
2812 | else | |
879bfdc2 | 2813 | { |
35df4500 | 2814 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2815 | { |
0000e5cc PA |
2816 | *hw_breakpoint_error = 1; |
2817 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2818 | fprintf_unfiltered (tmp_error_stream, |
2819 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2820 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2821 | if (bp_err_message != NULL) | |
2822 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2823 | } |
2824 | else | |
2825 | { | |
0000e5cc PA |
2826 | if (bp_err_message == NULL) |
2827 | { | |
2828 | char *message | |
2829 | = memory_error_message (TARGET_XFER_E_IO, | |
2830 | bl->gdbarch, bl->address); | |
2831 | struct cleanup *old_chain = make_cleanup (xfree, message); | |
2832 | ||
2833 | fprintf_unfiltered (tmp_error_stream, | |
2834 | "Cannot insert breakpoint %d.\n" | |
2835 | "%s\n", | |
2836 | bl->owner->number, message); | |
2837 | do_cleanups (old_chain); | |
2838 | } | |
2839 | else | |
2840 | { | |
2841 | fprintf_unfiltered (tmp_error_stream, | |
2842 | "Cannot insert breakpoint %d: %s\n", | |
2843 | bl->owner->number, | |
2844 | bp_err_message); | |
2845 | } | |
879bfdc2 | 2846 | } |
0000e5cc | 2847 | return 1; |
879bfdc2 DJ |
2848 | |
2849 | } | |
2850 | } | |
2851 | else | |
35df4500 | 2852 | bl->inserted = 1; |
879bfdc2 | 2853 | |
0000e5cc | 2854 | return 0; |
879bfdc2 DJ |
2855 | } |
2856 | ||
35df4500 | 2857 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2858 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2859 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2860 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2861 | { |
0000e5cc PA |
2862 | int val; |
2863 | ||
77b06cd7 TJB |
2864 | gdb_assert (bl->owner->ops != NULL |
2865 | && bl->owner->ops->insert_location != NULL); | |
2866 | ||
2867 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2868 | |
2869 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2870 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2871 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2872 | { |
2873 | struct bp_location *loc, **loc_temp; | |
2874 | ||
2875 | /* But don't try to insert it, if there's already another | |
2876 | hw_access location that would be considered a duplicate | |
2877 | of this one. */ | |
2878 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2879 | if (loc != bl |
85d721b8 | 2880 | && loc->watchpoint_type == hw_access |
35df4500 | 2881 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2882 | { |
35df4500 TJB |
2883 | bl->duplicate = 1; |
2884 | bl->inserted = 1; | |
2885 | bl->target_info = loc->target_info; | |
2886 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2887 | val = 0; |
2888 | break; | |
2889 | } | |
2890 | ||
2891 | if (val == 1) | |
2892 | { | |
77b06cd7 TJB |
2893 | bl->watchpoint_type = hw_access; |
2894 | val = bl->owner->ops->insert_location (bl); | |
2895 | ||
2896 | if (val) | |
2897 | /* Back to the original value. */ | |
2898 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2899 | } |
2900 | } | |
2901 | ||
35df4500 | 2902 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2903 | } |
2904 | ||
35df4500 | 2905 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2906 | { |
0000e5cc PA |
2907 | int val; |
2908 | ||
77b06cd7 TJB |
2909 | gdb_assert (bl->owner->ops != NULL |
2910 | && bl->owner->ops->insert_location != NULL); | |
2911 | ||
2912 | val = bl->owner->ops->insert_location (bl); | |
2913 | if (val) | |
2914 | { | |
2915 | bl->owner->enable_state = bp_disabled; | |
2916 | ||
2917 | if (val == 1) | |
2918 | warning (_("\ | |
2919 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2920 | of catchpoint."), bl->owner->number); | |
2921 | else | |
2922 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2923 | } | |
2924 | ||
2925 | bl->inserted = (val == 0); | |
1640b821 DJ |
2926 | |
2927 | /* We've already printed an error message if there was a problem | |
2928 | inserting this catchpoint, and we've disabled the catchpoint, | |
2929 | so just return success. */ | |
2930 | return 0; | |
879bfdc2 DJ |
2931 | } |
2932 | ||
2933 | return 0; | |
2934 | } | |
2935 | ||
6c95b8df PA |
2936 | /* This function is called when program space PSPACE is about to be |
2937 | deleted. It takes care of updating breakpoints to not reference | |
2938 | PSPACE anymore. */ | |
2939 | ||
2940 | void | |
2941 | breakpoint_program_space_exit (struct program_space *pspace) | |
2942 | { | |
2943 | struct breakpoint *b, *b_temp; | |
876fa593 | 2944 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2945 | |
2946 | /* Remove any breakpoint that was set through this program space. */ | |
2947 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2948 | { | |
2949 | if (b->pspace == pspace) | |
2950 | delete_breakpoint (b); | |
2951 | } | |
2952 | ||
2953 | /* Breakpoints set through other program spaces could have locations | |
2954 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2955 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2956 | { |
2957 | struct bp_location *tmp; | |
2958 | ||
2959 | if (loc->pspace == pspace) | |
2960 | { | |
2bdf28a0 | 2961 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2962 | if (loc->owner->loc == loc) |
2963 | loc->owner->loc = loc->next; | |
2964 | else | |
2965 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2966 | if (tmp->next == loc) | |
2967 | { | |
2968 | tmp->next = loc->next; | |
2969 | break; | |
2970 | } | |
2971 | } | |
2972 | } | |
2973 | ||
2974 | /* Now update the global location list to permanently delete the | |
2975 | removed locations above. */ | |
44702360 | 2976 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2977 | } |
2978 | ||
74960c60 VP |
2979 | /* Make sure all breakpoints are inserted in inferior. |
2980 | Throws exception on any error. | |
2981 | A breakpoint that is already inserted won't be inserted | |
2982 | again, so calling this function twice is safe. */ | |
2983 | void | |
2984 | insert_breakpoints (void) | |
2985 | { | |
2986 | struct breakpoint *bpt; | |
2987 | ||
2988 | ALL_BREAKPOINTS (bpt) | |
2989 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2990 | { |
2991 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2992 | ||
2993 | update_watchpoint (w, 0 /* don't reparse. */); | |
2994 | } | |
74960c60 | 2995 | |
04086b45 PA |
2996 | /* Updating watchpoints creates new locations, so update the global |
2997 | location list. Explicitly tell ugll to insert locations and | |
2998 | ignore breakpoints_always_inserted_mode. */ | |
2999 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
3000 | } |
3001 | ||
20388dd6 YQ |
3002 | /* Invoke CALLBACK for each of bp_location. */ |
3003 | ||
3004 | void | |
3005 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
3006 | { | |
3007 | struct bp_location *loc, **loc_tmp; | |
3008 | ||
3009 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
3010 | { | |
3011 | callback (loc, NULL); | |
3012 | } | |
3013 | } | |
3014 | ||
b775012e LM |
3015 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3016 | target. It is the case with deleting and disabling of breakpoints when using | |
3017 | always-inserted mode. */ | |
3018 | ||
3019 | static void | |
3020 | update_inserted_breakpoint_locations (void) | |
3021 | { | |
3022 | struct bp_location *bl, **blp_tmp; | |
3023 | int error_flag = 0; | |
3024 | int val = 0; | |
3025 | int disabled_breaks = 0; | |
3026 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3027 | int hw_bp_details_reported = 0; |
b775012e LM |
3028 | |
3029 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
3030 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
3031 | ||
3032 | /* Explicitly mark the warning -- this will only be printed if | |
3033 | there was an error. */ | |
3034 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
3035 | ||
3036 | save_current_space_and_thread (); | |
3037 | ||
3038 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3039 | { | |
3040 | /* We only want to update software breakpoints and hardware | |
3041 | breakpoints. */ | |
3042 | if (!is_breakpoint (bl->owner)) | |
3043 | continue; | |
3044 | ||
3045 | /* We only want to update locations that are already inserted | |
3046 | and need updating. This is to avoid unwanted insertion during | |
3047 | deletion of breakpoints. */ | |
3048 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
3049 | continue; | |
3050 | ||
3051 | switch_to_program_space_and_thread (bl->pspace); | |
3052 | ||
3053 | /* For targets that support global breakpoints, there's no need | |
3054 | to select an inferior to insert breakpoint to. In fact, even | |
3055 | if we aren't attached to any process yet, we should still | |
3056 | insert breakpoints. */ | |
f5656ead | 3057 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
3058 | && ptid_equal (inferior_ptid, null_ptid)) |
3059 | continue; | |
3060 | ||
3061 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 3062 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3063 | if (val) |
3064 | error_flag = val; | |
3065 | } | |
3066 | ||
3067 | if (error_flag) | |
3068 | { | |
3069 | target_terminal_ours_for_output (); | |
3070 | error_stream (tmp_error_stream); | |
3071 | } | |
3072 | ||
3073 | do_cleanups (cleanups); | |
3074 | } | |
3075 | ||
c30eee59 | 3076 | /* Used when starting or continuing the program. */ |
c906108c | 3077 | |
74960c60 VP |
3078 | static void |
3079 | insert_breakpoint_locations (void) | |
c906108c | 3080 | { |
a5606eee | 3081 | struct breakpoint *bpt; |
35df4500 | 3082 | struct bp_location *bl, **blp_tmp; |
eacd795a | 3083 | int error_flag = 0; |
c906108c | 3084 | int val = 0; |
3fbb6ffa | 3085 | int disabled_breaks = 0; |
81d0cc19 | 3086 | int hw_breakpoint_error = 0; |
dd61ec5c | 3087 | int hw_bp_error_explained_already = 0; |
c906108c | 3088 | |
81d0cc19 | 3089 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 3090 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 3091 | |
81d0cc19 GS |
3092 | /* Explicitly mark the warning -- this will only be printed if |
3093 | there was an error. */ | |
3094 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
3095 | |
3096 | save_current_space_and_thread (); | |
3097 | ||
35df4500 | 3098 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3099 | { |
b775012e | 3100 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3101 | continue; |
3102 | ||
4a64f543 MS |
3103 | /* There is no point inserting thread-specific breakpoints if |
3104 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3105 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
3106 | if (bl->owner->thread != -1 |
3107 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
3108 | continue; |
3109 | ||
35df4500 | 3110 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3111 | |
3112 | /* For targets that support global breakpoints, there's no need | |
3113 | to select an inferior to insert breakpoint to. In fact, even | |
3114 | if we aren't attached to any process yet, we should still | |
3115 | insert breakpoints. */ | |
f5656ead | 3116 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
3117 | && ptid_equal (inferior_ptid, null_ptid)) |
3118 | continue; | |
3119 | ||
3fbb6ffa | 3120 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3121 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3122 | if (val) |
eacd795a | 3123 | error_flag = val; |
879bfdc2 | 3124 | } |
c906108c | 3125 | |
4a64f543 MS |
3126 | /* If we failed to insert all locations of a watchpoint, remove |
3127 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3128 | ALL_BREAKPOINTS (bpt) |
3129 | { | |
3130 | int some_failed = 0; | |
3131 | struct bp_location *loc; | |
3132 | ||
3133 | if (!is_hardware_watchpoint (bpt)) | |
3134 | continue; | |
3135 | ||
d6b74ac4 | 3136 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3137 | continue; |
74960c60 VP |
3138 | |
3139 | if (bpt->disposition == disp_del_at_next_stop) | |
3140 | continue; | |
a5606eee VP |
3141 | |
3142 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3143 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3144 | { |
3145 | some_failed = 1; | |
3146 | break; | |
3147 | } | |
3148 | if (some_failed) | |
3149 | { | |
3150 | for (loc = bpt->loc; loc; loc = loc->next) | |
3151 | if (loc->inserted) | |
3152 | remove_breakpoint (loc, mark_uninserted); | |
3153 | ||
3154 | hw_breakpoint_error = 1; | |
3155 | fprintf_unfiltered (tmp_error_stream, | |
3156 | "Could not insert hardware watchpoint %d.\n", | |
3157 | bpt->number); | |
eacd795a | 3158 | error_flag = -1; |
a5606eee VP |
3159 | } |
3160 | } | |
3161 | ||
eacd795a | 3162 | if (error_flag) |
81d0cc19 GS |
3163 | { |
3164 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3165 | message about possibly exhausted resources. */ | |
dd61ec5c | 3166 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3167 | { |
c6510018 MS |
3168 | fprintf_unfiltered (tmp_error_stream, |
3169 | "Could not insert hardware breakpoints:\n\ | |
3170 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 3171 | } |
81d0cc19 GS |
3172 | target_terminal_ours_for_output (); |
3173 | error_stream (tmp_error_stream); | |
3174 | } | |
f7545552 TT |
3175 | |
3176 | do_cleanups (cleanups); | |
c906108c SS |
3177 | } |
3178 | ||
c30eee59 TJB |
3179 | /* Used when the program stops. |
3180 | Returns zero if successful, or non-zero if there was a problem | |
3181 | removing a breakpoint location. */ | |
3182 | ||
c906108c | 3183 | int |
fba45db2 | 3184 | remove_breakpoints (void) |
c906108c | 3185 | { |
35df4500 | 3186 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3187 | int val = 0; |
c906108c | 3188 | |
35df4500 | 3189 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3190 | { |
1e4d1764 | 3191 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 3192 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 3193 | } |
3a1bae8e | 3194 | return val; |
c906108c SS |
3195 | } |
3196 | ||
49fa26b0 PA |
3197 | /* When a thread exits, remove breakpoints that are related to |
3198 | that thread. */ | |
3199 | ||
3200 | static void | |
3201 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3202 | { | |
3203 | struct breakpoint *b, *b_tmp; | |
3204 | ||
3205 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3206 | { | |
96181529 | 3207 | if (b->thread == tp->num && user_breakpoint_p (b)) |
49fa26b0 PA |
3208 | { |
3209 | b->disposition = disp_del_at_next_stop; | |
3210 | ||
3211 | printf_filtered (_("\ | |
46ecd527 | 3212 | Thread-specific breakpoint %d deleted - thread %d no longer in the thread list.\n"), |
49fa26b0 PA |
3213 | b->number, tp->num); |
3214 | ||
3215 | /* Hide it from the user. */ | |
3216 | b->number = 0; | |
3217 | } | |
3218 | } | |
3219 | } | |
3220 | ||
6c95b8df PA |
3221 | /* Remove breakpoints of process PID. */ |
3222 | ||
3223 | int | |
3224 | remove_breakpoints_pid (int pid) | |
3225 | { | |
35df4500 | 3226 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3227 | int val; |
3228 | struct inferior *inf = find_inferior_pid (pid); | |
3229 | ||
35df4500 | 3230 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3231 | { |
35df4500 | 3232 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3233 | continue; |
3234 | ||
fc126975 | 3235 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3236 | { |
35df4500 | 3237 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
3238 | if (val != 0) |
3239 | return val; | |
3240 | } | |
3241 | } | |
3242 | return 0; | |
3243 | } | |
3244 | ||
c906108c | 3245 | int |
fba45db2 | 3246 | reattach_breakpoints (int pid) |
c906108c | 3247 | { |
6c95b8df | 3248 | struct cleanup *old_chain; |
35df4500 | 3249 | struct bp_location *bl, **blp_tmp; |
c906108c | 3250 | int val; |
86b887df | 3251 | struct ui_file *tmp_error_stream; |
dd61ec5c | 3252 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
3253 | struct inferior *inf; |
3254 | struct thread_info *tp; | |
3255 | ||
3256 | tp = any_live_thread_of_process (pid); | |
3257 | if (tp == NULL) | |
3258 | return 1; | |
3259 | ||
3260 | inf = find_inferior_pid (pid); | |
3261 | old_chain = save_inferior_ptid (); | |
3262 | ||
3263 | inferior_ptid = tp->ptid; | |
a4954f26 | 3264 | |
86b887df | 3265 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 3266 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 3267 | |
35df4500 | 3268 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3269 | { |
35df4500 | 3270 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3271 | continue; |
3272 | ||
35df4500 | 3273 | if (bl->inserted) |
c5aa993b | 3274 | { |
35df4500 | 3275 | bl->inserted = 0; |
dd61ec5c | 3276 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
3277 | if (val != 0) |
3278 | { | |
ce696e05 | 3279 | do_cleanups (old_chain); |
c5aa993b JM |
3280 | return val; |
3281 | } | |
3282 | } | |
3283 | } | |
ce696e05 | 3284 | do_cleanups (old_chain); |
c906108c SS |
3285 | return 0; |
3286 | } | |
3287 | ||
e58b0e63 PA |
3288 | static int internal_breakpoint_number = -1; |
3289 | ||
84f4c1fe PM |
3290 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3291 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3292 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3293 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3294 | breakpoint_count and that value incremented. Internal breakpoints |
3295 | do not set the internal var bpnum. */ | |
3296 | static void | |
3297 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3298 | { | |
3299 | if (internal) | |
3300 | b->number = internal_breakpoint_number--; | |
3301 | else | |
3302 | { | |
3303 | set_breakpoint_count (breakpoint_count + 1); | |
3304 | b->number = breakpoint_count; | |
3305 | } | |
3306 | } | |
3307 | ||
e62c965a | 3308 | static struct breakpoint * |
a6d9a66e | 3309 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3310 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3311 | const struct breakpoint_ops *ops) |
e62c965a | 3312 | { |
e62c965a PP |
3313 | struct symtab_and_line sal; |
3314 | struct breakpoint *b; | |
3315 | ||
4a64f543 | 3316 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3317 | |
3318 | sal.pc = address; | |
3319 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3320 | sal.pspace = current_program_space; |
e62c965a | 3321 | |
06edf0c0 | 3322 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3323 | b->number = internal_breakpoint_number--; |
3324 | b->disposition = disp_donttouch; | |
3325 | ||
3326 | return b; | |
3327 | } | |
3328 | ||
17450429 PP |
3329 | static const char *const longjmp_names[] = |
3330 | { | |
3331 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3332 | }; | |
3333 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3334 | ||
3335 | /* Per-objfile data private to breakpoint.c. */ | |
3336 | struct breakpoint_objfile_data | |
3337 | { | |
3338 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3b7344d5 | 3339 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3340 | |
3341 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3b7344d5 | 3342 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3343 | |
28106bc2 SDJ |
3344 | /* True if we have looked for longjmp probes. */ |
3345 | int longjmp_searched; | |
3346 | ||
3347 | /* SystemTap probe points for longjmp (if any). */ | |
3348 | VEC (probe_p) *longjmp_probes; | |
3349 | ||
17450429 | 3350 | /* Minimal symbol for "std::terminate()" (if any). */ |
3b7344d5 | 3351 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3352 | |
3353 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3b7344d5 | 3354 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3355 | |
3356 | /* True if we have looked for exception probes. */ | |
3357 | int exception_searched; | |
3358 | ||
3359 | /* SystemTap probe points for unwinding (if any). */ | |
3360 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3361 | }; |
3362 | ||
3363 | static const struct objfile_data *breakpoint_objfile_key; | |
3364 | ||
3365 | /* Minimal symbol not found sentinel. */ | |
3366 | static struct minimal_symbol msym_not_found; | |
3367 | ||
3368 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3369 | ||
3370 | static int | |
3371 | msym_not_found_p (const struct minimal_symbol *msym) | |
3372 | { | |
3373 | return msym == &msym_not_found; | |
3374 | } | |
3375 | ||
3376 | /* Return per-objfile data needed by breakpoint.c. | |
3377 | Allocate the data if necessary. */ | |
3378 | ||
3379 | static struct breakpoint_objfile_data * | |
3380 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3381 | { | |
3382 | struct breakpoint_objfile_data *bp_objfile_data; | |
3383 | ||
3384 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3385 | if (bp_objfile_data == NULL) | |
3386 | { | |
3387 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3388 | sizeof (*bp_objfile_data)); | |
3389 | ||
3390 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3391 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3392 | } | |
3393 | return bp_objfile_data; | |
3394 | } | |
3395 | ||
28106bc2 SDJ |
3396 | static void |
3397 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3398 | { | |
3399 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3400 | ||
3401 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3402 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3403 | } | |
3404 | ||
e62c965a | 3405 | static void |
af02033e | 3406 | create_overlay_event_breakpoint (void) |
e62c965a | 3407 | { |
69de3c6a | 3408 | struct objfile *objfile; |
af02033e | 3409 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3410 | |
69de3c6a PP |
3411 | ALL_OBJFILES (objfile) |
3412 | { | |
3413 | struct breakpoint *b; | |
17450429 PP |
3414 | struct breakpoint_objfile_data *bp_objfile_data; |
3415 | CORE_ADDR addr; | |
69de3c6a | 3416 | |
17450429 PP |
3417 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3418 | ||
3b7344d5 | 3419 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3420 | continue; |
3421 | ||
3b7344d5 | 3422 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3423 | { |
3b7344d5 | 3424 | struct bound_minimal_symbol m; |
17450429 PP |
3425 | |
3426 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3427 | if (m.minsym == NULL) |
17450429 PP |
3428 | { |
3429 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3430 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3431 | continue; |
3432 | } | |
3433 | bp_objfile_data->overlay_msym = m; | |
3434 | } | |
e62c965a | 3435 | |
77e371c0 | 3436 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3437 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3438 | bp_overlay_event, |
3439 | &internal_breakpoint_ops); | |
69de3c6a | 3440 | b->addr_string = xstrdup (func_name); |
e62c965a | 3441 | |
69de3c6a PP |
3442 | if (overlay_debugging == ovly_auto) |
3443 | { | |
3444 | b->enable_state = bp_enabled; | |
3445 | overlay_events_enabled = 1; | |
3446 | } | |
3447 | else | |
3448 | { | |
3449 | b->enable_state = bp_disabled; | |
3450 | overlay_events_enabled = 0; | |
3451 | } | |
e62c965a | 3452 | } |
44702360 | 3453 | update_global_location_list (UGLL_MAY_INSERT); |
e62c965a PP |
3454 | } |
3455 | ||
0fd8e87f | 3456 | static void |
af02033e | 3457 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3458 | { |
6c95b8df | 3459 | struct program_space *pspace; |
6c95b8df PA |
3460 | struct cleanup *old_chain; |
3461 | ||
3462 | old_chain = save_current_program_space (); | |
0fd8e87f | 3463 | |
6c95b8df | 3464 | ALL_PSPACES (pspace) |
af02033e PP |
3465 | { |
3466 | struct objfile *objfile; | |
3467 | ||
3468 | set_current_program_space (pspace); | |
3469 | ||
3470 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3471 | { |
af02033e PP |
3472 | int i; |
3473 | struct gdbarch *gdbarch; | |
17450429 | 3474 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3475 | |
af02033e | 3476 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3477 | |
17450429 PP |
3478 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3479 | ||
28106bc2 SDJ |
3480 | if (!bp_objfile_data->longjmp_searched) |
3481 | { | |
25f9533e SDJ |
3482 | VEC (probe_p) *ret; |
3483 | ||
3484 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3485 | if (ret != NULL) | |
3486 | { | |
3487 | /* We are only interested in checking one element. */ | |
3488 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3489 | ||
3490 | if (!can_evaluate_probe_arguments (p)) | |
3491 | { | |
3492 | /* We cannot use the probe interface here, because it does | |
3493 | not know how to evaluate arguments. */ | |
3494 | VEC_free (probe_p, ret); | |
3495 | ret = NULL; | |
3496 | } | |
3497 | } | |
3498 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3499 | bp_objfile_data->longjmp_searched = 1; |
3500 | } | |
3501 | ||
3502 | if (bp_objfile_data->longjmp_probes != NULL) | |
3503 | { | |
3504 | int i; | |
3505 | struct probe *probe; | |
3506 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3507 | ||
3508 | for (i = 0; | |
3509 | VEC_iterate (probe_p, | |
3510 | bp_objfile_data->longjmp_probes, | |
3511 | i, probe); | |
3512 | ++i) | |
3513 | { | |
3514 | struct breakpoint *b; | |
3515 | ||
729662a5 TT |
3516 | b = create_internal_breakpoint (gdbarch, |
3517 | get_probe_address (probe, | |
3518 | objfile), | |
28106bc2 SDJ |
3519 | bp_longjmp_master, |
3520 | &internal_breakpoint_ops); | |
3521 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3522 | b->enable_state = bp_disabled; | |
3523 | } | |
3524 | ||
3525 | continue; | |
3526 | } | |
3527 | ||
0569175e TSD |
3528 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3529 | continue; | |
3530 | ||
17450429 | 3531 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3532 | { |
3533 | struct breakpoint *b; | |
af02033e | 3534 | const char *func_name; |
17450429 | 3535 | CORE_ADDR addr; |
6c95b8df | 3536 | |
3b7344d5 | 3537 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3538 | continue; |
0fd8e87f | 3539 | |
17450429 | 3540 | func_name = longjmp_names[i]; |
3b7344d5 | 3541 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3542 | { |
3b7344d5 | 3543 | struct bound_minimal_symbol m; |
17450429 PP |
3544 | |
3545 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3546 | if (m.minsym == NULL) |
17450429 PP |
3547 | { |
3548 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3549 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3550 | continue; |
3551 | } | |
3552 | bp_objfile_data->longjmp_msym[i] = m; | |
3553 | } | |
3554 | ||
77e371c0 | 3555 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3556 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3557 | &internal_breakpoint_ops); | |
af02033e PP |
3558 | b->addr_string = xstrdup (func_name); |
3559 | b->enable_state = bp_disabled; | |
3560 | } | |
0fd8e87f | 3561 | } |
af02033e | 3562 | } |
44702360 | 3563 | update_global_location_list (UGLL_MAY_INSERT); |
6c95b8df PA |
3564 | |
3565 | do_cleanups (old_chain); | |
0fd8e87f UW |
3566 | } |
3567 | ||
af02033e | 3568 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3569 | static void |
af02033e | 3570 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3571 | { |
3572 | struct program_space *pspace; | |
aa7d318d | 3573 | struct cleanup *old_chain; |
af02033e | 3574 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3575 | |
3576 | old_chain = save_current_program_space (); | |
3577 | ||
3578 | ALL_PSPACES (pspace) | |
17450429 PP |
3579 | { |
3580 | struct objfile *objfile; | |
3581 | CORE_ADDR addr; | |
3582 | ||
3583 | set_current_program_space (pspace); | |
3584 | ||
aa7d318d TT |
3585 | ALL_OBJFILES (objfile) |
3586 | { | |
3587 | struct breakpoint *b; | |
17450429 | 3588 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3589 | |
17450429 | 3590 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3591 | |
3b7344d5 | 3592 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3593 | continue; |
3594 | ||
3b7344d5 | 3595 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3596 | { |
3b7344d5 | 3597 | struct bound_minimal_symbol m; |
17450429 PP |
3598 | |
3599 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3600 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3601 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3602 | { |
3603 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3604 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3605 | continue; |
3606 | } | |
3607 | bp_objfile_data->terminate_msym = m; | |
3608 | } | |
aa7d318d | 3609 | |
77e371c0 | 3610 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3611 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3612 | bp_std_terminate_master, |
3613 | &internal_breakpoint_ops); | |
aa7d318d TT |
3614 | b->addr_string = xstrdup (func_name); |
3615 | b->enable_state = bp_disabled; | |
3616 | } | |
17450429 PP |
3617 | } |
3618 | ||
44702360 | 3619 | update_global_location_list (UGLL_MAY_INSERT); |
aa7d318d TT |
3620 | |
3621 | do_cleanups (old_chain); | |
3622 | } | |
3623 | ||
186c406b TT |
3624 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3625 | ||
70221824 | 3626 | static void |
186c406b TT |
3627 | create_exception_master_breakpoint (void) |
3628 | { | |
3629 | struct objfile *objfile; | |
17450429 | 3630 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3631 | |
3632 | ALL_OBJFILES (objfile) | |
3633 | { | |
17450429 PP |
3634 | struct breakpoint *b; |
3635 | struct gdbarch *gdbarch; | |
3636 | struct breakpoint_objfile_data *bp_objfile_data; | |
3637 | CORE_ADDR addr; | |
3638 | ||
3639 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3640 | ||
28106bc2 SDJ |
3641 | /* We prefer the SystemTap probe point if it exists. */ |
3642 | if (!bp_objfile_data->exception_searched) | |
3643 | { | |
25f9533e SDJ |
3644 | VEC (probe_p) *ret; |
3645 | ||
3646 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3647 | ||
3648 | if (ret != NULL) | |
3649 | { | |
3650 | /* We are only interested in checking one element. */ | |
3651 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3652 | ||
3653 | if (!can_evaluate_probe_arguments (p)) | |
3654 | { | |
3655 | /* We cannot use the probe interface here, because it does | |
3656 | not know how to evaluate arguments. */ | |
3657 | VEC_free (probe_p, ret); | |
3658 | ret = NULL; | |
3659 | } | |
3660 | } | |
3661 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3662 | bp_objfile_data->exception_searched = 1; |
3663 | } | |
3664 | ||
3665 | if (bp_objfile_data->exception_probes != NULL) | |
3666 | { | |
3667 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3668 | int i; | |
3669 | struct probe *probe; | |
3670 | ||
3671 | for (i = 0; | |
3672 | VEC_iterate (probe_p, | |
3673 | bp_objfile_data->exception_probes, | |
3674 | i, probe); | |
3675 | ++i) | |
3676 | { | |
3677 | struct breakpoint *b; | |
3678 | ||
729662a5 TT |
3679 | b = create_internal_breakpoint (gdbarch, |
3680 | get_probe_address (probe, | |
3681 | objfile), | |
28106bc2 SDJ |
3682 | bp_exception_master, |
3683 | &internal_breakpoint_ops); | |
3684 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3685 | b->enable_state = bp_disabled; | |
3686 | } | |
3687 | ||
3688 | continue; | |
3689 | } | |
3690 | ||
3691 | /* Otherwise, try the hook function. */ | |
3692 | ||
3b7344d5 | 3693 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3694 | continue; |
3695 | ||
3696 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3697 | |
3b7344d5 | 3698 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3699 | { |
3b7344d5 | 3700 | struct bound_minimal_symbol debug_hook; |
186c406b | 3701 | |
17450429 | 3702 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3703 | if (debug_hook.minsym == NULL) |
17450429 | 3704 | { |
3b7344d5 | 3705 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3706 | continue; |
3707 | } | |
3708 | ||
3709 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3710 | } |
17450429 | 3711 | |
77e371c0 | 3712 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3713 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3714 | ¤t_target); | |
06edf0c0 PA |
3715 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3716 | &internal_breakpoint_ops); | |
17450429 PP |
3717 | b->addr_string = xstrdup (func_name); |
3718 | b->enable_state = bp_disabled; | |
186c406b TT |
3719 | } |
3720 | ||
44702360 | 3721 | update_global_location_list (UGLL_MAY_INSERT); |
186c406b TT |
3722 | } |
3723 | ||
c906108c | 3724 | void |
fba45db2 | 3725 | update_breakpoints_after_exec (void) |
c906108c | 3726 | { |
35df4500 | 3727 | struct breakpoint *b, *b_tmp; |
876fa593 | 3728 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3729 | |
25b22b0a PA |
3730 | /* We're about to delete breakpoints from GDB's lists. If the |
3731 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3732 | writing the breakpoints' "shadow contents" back into memory. The | |
3733 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3734 | do that. Instead, the target is responsible from marking | |
3735 | breakpoints out as soon as it detects an exec. We don't do that | |
3736 | here instead, because there may be other attempts to delete | |
3737 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3738 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3739 | if (bploc->pspace == current_program_space) |
3740 | gdb_assert (!bploc->inserted); | |
c906108c | 3741 | |
35df4500 | 3742 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3743 | { |
6c95b8df PA |
3744 | if (b->pspace != current_program_space) |
3745 | continue; | |
3746 | ||
4a64f543 | 3747 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3748 | if (b->type == bp_shlib_event) |
3749 | { | |
3750 | delete_breakpoint (b); | |
3751 | continue; | |
3752 | } | |
c906108c | 3753 | |
4a64f543 | 3754 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3755 | if (b->type == bp_jit_event) |
3756 | { | |
3757 | delete_breakpoint (b); | |
3758 | continue; | |
3759 | } | |
3760 | ||
1900040c | 3761 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3762 | as must overlay event and longjmp master breakpoints. */ |
3763 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3764 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3765 | || b->type == bp_exception_master) | |
c4093a6a JM |
3766 | { |
3767 | delete_breakpoint (b); | |
3768 | continue; | |
3769 | } | |
3770 | ||
4a64f543 | 3771 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3772 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3773 | { |
3774 | delete_breakpoint (b); | |
3775 | continue; | |
3776 | } | |
3777 | ||
7c16b83e PA |
3778 | /* Just like single-step breakpoints. */ |
3779 | if (b->type == bp_single_step) | |
3780 | { | |
3781 | delete_breakpoint (b); | |
3782 | continue; | |
3783 | } | |
3784 | ||
611c83ae PA |
3785 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3786 | after an exec. */ | |
186c406b | 3787 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3788 | || b->type == bp_longjmp_call_dummy |
186c406b | 3789 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3790 | { |
3791 | delete_breakpoint (b); | |
3792 | continue; | |
3793 | } | |
3794 | ||
ce78b96d JB |
3795 | if (b->type == bp_catchpoint) |
3796 | { | |
3797 | /* For now, none of the bp_catchpoint breakpoints need to | |
3798 | do anything at this point. In the future, if some of | |
3799 | the catchpoints need to something, we will need to add | |
3800 | a new method, and call this method from here. */ | |
3801 | continue; | |
3802 | } | |
3803 | ||
c5aa993b JM |
3804 | /* bp_finish is a special case. The only way we ought to be able |
3805 | to see one of these when an exec() has happened, is if the user | |
3806 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3807 | carries them to the call-site of the current callee, by setting | |
3808 | a temporary bp there and resuming. But in this case, the finish | |
3809 | will carry them entirely through the vfork & exec. | |
3810 | ||
3811 | We don't want to allow a bp_finish to remain inserted now. But | |
3812 | we can't safely delete it, 'cause finish_command has a handle to | |
3813 | the bp on a bpstat, and will later want to delete it. There's a | |
3814 | chance (and I've seen it happen) that if we delete the bp_finish | |
3815 | here, that its storage will get reused by the time finish_command | |
3816 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3817 | We really must allow finish_command to delete a bp_finish. | |
3818 | ||
e5dd4106 | 3819 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3820 | it's safe to delete something others may have handles to?" |
3821 | problem, what we'll do here is just uninsert the bp_finish, and | |
3822 | let finish_command delete it. | |
3823 | ||
3824 | (We know the bp_finish is "doomed" in the sense that it's | |
3825 | momentary, and will be deleted as soon as finish_command sees | |
3826 | the inferior stopped. So it doesn't matter that the bp's | |
3827 | address is probably bogus in the new a.out, unlike e.g., the | |
3828 | solib breakpoints.) */ | |
c5aa993b | 3829 | |
c5aa993b JM |
3830 | if (b->type == bp_finish) |
3831 | { | |
3832 | continue; | |
3833 | } | |
3834 | ||
3835 | /* Without a symbolic address, we have little hope of the | |
3836 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3837 | a.out. */ |
c5aa993b JM |
3838 | if (b->addr_string == NULL) |
3839 | { | |
3840 | delete_breakpoint (b); | |
3841 | continue; | |
3842 | } | |
c5aa993b | 3843 | } |
c906108c SS |
3844 | } |
3845 | ||
3846 | int | |
d80ee84f | 3847 | detach_breakpoints (ptid_t ptid) |
c906108c | 3848 | { |
35df4500 | 3849 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3850 | int val = 0; |
ce696e05 | 3851 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3852 | struct inferior *inf = current_inferior (); |
c5aa993b | 3853 | |
dfd4cc63 | 3854 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3855 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3856 | |
6c95b8df | 3857 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3858 | inferior_ptid = ptid; |
35df4500 | 3859 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3860 | { |
35df4500 | 3861 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3862 | continue; |
3863 | ||
bd9673a4 PW |
3864 | /* This function must physically remove breakpoints locations |
3865 | from the specified ptid, without modifying the breakpoint | |
3866 | package's state. Locations of type bp_loc_other are only | |
3867 | maintained at GDB side. So, there is no need to remove | |
3868 | these bp_loc_other locations. Moreover, removing these | |
3869 | would modify the breakpoint package's state. */ | |
3870 | if (bl->loc_type == bp_loc_other) | |
3871 | continue; | |
3872 | ||
35df4500 TJB |
3873 | if (bl->inserted) |
3874 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3875 | } |
d03285ec | 3876 | |
ce696e05 | 3877 | do_cleanups (old_chain); |
3a1bae8e | 3878 | return val; |
c906108c SS |
3879 | } |
3880 | ||
35df4500 | 3881 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3882 | Note that this is used to detach breakpoints from a child fork. |
3883 | When we get here, the child isn't in the inferior list, and neither | |
3884 | do we have objects to represent its address space --- we should | |
35df4500 | 3885 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3886 | |
c906108c | 3887 | static int |
35df4500 | 3888 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3889 | { |
3890 | int val; | |
c5aa993b | 3891 | |
35df4500 TJB |
3892 | /* BL is never in moribund_locations by our callers. */ |
3893 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3894 | |
74960c60 VP |
3895 | /* The type of none suggests that owner is actually deleted. |
3896 | This should not ever happen. */ | |
35df4500 | 3897 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3898 | |
35df4500 TJB |
3899 | if (bl->loc_type == bp_loc_software_breakpoint |
3900 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3901 | { |
c02f5703 MS |
3902 | /* "Normal" instruction breakpoint: either the standard |
3903 | trap-instruction bp (bp_breakpoint), or a | |
3904 | bp_hardware_breakpoint. */ | |
3905 | ||
3906 | /* First check to see if we have to handle an overlay. */ | |
3907 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3908 | || bl->section == NULL |
3909 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3910 | { |
3911 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3912 | |
3913 | /* If we're trying to uninsert a memory breakpoint that we | |
3914 | know is set in a dynamic object that is marked | |
3915 | shlib_disabled, then either the dynamic object was | |
3916 | removed with "remove-symbol-file" or with | |
3917 | "nosharedlibrary". In the former case, we don't know | |
3918 | whether another dynamic object might have loaded over the | |
3919 | breakpoint's address -- the user might well let us know | |
3920 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3921 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3922 | list of dynamically loaded objects). If we have the |
3923 | breakpoint's shadow memory, that is, this is a software | |
3924 | breakpoint managed by GDB, check whether the breakpoint | |
3925 | is still inserted in memory, to avoid overwriting wrong | |
3926 | code with stale saved shadow contents. Note that HW | |
3927 | breakpoints don't have shadow memory, as they're | |
3928 | implemented using a mechanism that is not dependent on | |
3929 | being able to modify the target's memory, and as such | |
3930 | they should always be removed. */ | |
3931 | if (bl->shlib_disabled | |
3932 | && bl->target_info.shadow_len != 0 | |
3933 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3934 | val = 0; | |
3935 | else | |
3936 | val = bl->owner->ops->remove_location (bl); | |
c02f5703 | 3937 | } |
c906108c SS |
3938 | else |
3939 | { | |
4a64f543 | 3940 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3941 | Did we set a breakpoint at the LMA? */ |
3942 | if (!overlay_events_enabled) | |
3943 | { | |
3944 | /* Yes -- overlay event support is not active, so we | |
3945 | should have set a breakpoint at the LMA. Remove it. | |
3946 | */ | |
c02f5703 MS |
3947 | /* Ignore any failures: if the LMA is in ROM, we will |
3948 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3949 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3950 | target_remove_hw_breakpoint (bl->gdbarch, | |
3951 | &bl->overlay_target_info); | |
c02f5703 | 3952 | else |
35df4500 TJB |
3953 | target_remove_breakpoint (bl->gdbarch, |
3954 | &bl->overlay_target_info); | |
c02f5703 MS |
3955 | } |
3956 | /* Did we set a breakpoint at the VMA? | |
3957 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3958 | if (bl->inserted) |
c906108c | 3959 | { |
c02f5703 MS |
3960 | /* Yes -- remove it. Previously we did not bother to |
3961 | remove the breakpoint if the section had been | |
3962 | unmapped, but let's not rely on that being safe. We | |
3963 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3964 | |
3965 | /* However, we should remove *software* breakpoints only | |
3966 | if the section is still mapped, or else we overwrite | |
3967 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3968 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3969 | || section_is_mapped (bl->section)) | |
3970 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3971 | else |
3972 | val = 0; | |
c906108c | 3973 | } |
c02f5703 MS |
3974 | else |
3975 | { | |
3976 | /* No -- not inserted, so no need to remove. No error. */ | |
3977 | val = 0; | |
3978 | } | |
c906108c | 3979 | } |
879d1e6b | 3980 | |
08351840 PA |
3981 | /* In some cases, we might not be able to remove a breakpoint in |
3982 | a shared library that has already been removed, but we have | |
3983 | not yet processed the shlib unload event. Similarly for an | |
3984 | unloaded add-symbol-file object - the user might not yet have | |
3985 | had the chance to remove-symbol-file it. shlib_disabled will | |
3986 | be set if the library/object has already been removed, but | |
3987 | the breakpoint hasn't been uninserted yet, e.g., after | |
3988 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3989 | always-inserted mode. */ | |
076855f9 | 3990 | if (val |
08351840 PA |
3991 | && (bl->loc_type == bp_loc_software_breakpoint |
3992 | && (bl->shlib_disabled | |
3993 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3994 | || shared_objfile_contains_address_p (bl->pspace, |
3995 | bl->address)))) | |
879d1e6b UW |
3996 | val = 0; |
3997 | ||
c906108c SS |
3998 | if (val) |
3999 | return val; | |
35df4500 | 4000 | bl->inserted = (is == mark_inserted); |
c906108c | 4001 | } |
35df4500 | 4002 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 4003 | { |
77b06cd7 TJB |
4004 | gdb_assert (bl->owner->ops != NULL |
4005 | && bl->owner->ops->remove_location != NULL); | |
4006 | ||
35df4500 | 4007 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 4008 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 4009 | |
c906108c | 4010 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 4011 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 4012 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4013 | bl->owner->number); |
c906108c | 4014 | } |
35df4500 TJB |
4015 | else if (bl->owner->type == bp_catchpoint |
4016 | && breakpoint_enabled (bl->owner) | |
4017 | && !bl->duplicate) | |
ce78b96d | 4018 | { |
77b06cd7 TJB |
4019 | gdb_assert (bl->owner->ops != NULL |
4020 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 4021 | |
77b06cd7 | 4022 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
4023 | if (val) |
4024 | return val; | |
77b06cd7 | 4025 | |
35df4500 | 4026 | bl->inserted = (is == mark_inserted); |
ce78b96d | 4027 | } |
c906108c SS |
4028 | |
4029 | return 0; | |
4030 | } | |
4031 | ||
6c95b8df | 4032 | static int |
35df4500 | 4033 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
4034 | { |
4035 | int ret; | |
4036 | struct cleanup *old_chain; | |
4037 | ||
35df4500 TJB |
4038 | /* BL is never in moribund_locations by our callers. */ |
4039 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4040 | |
6c95b8df PA |
4041 | /* The type of none suggests that owner is actually deleted. |
4042 | This should not ever happen. */ | |
35df4500 | 4043 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
4044 | |
4045 | old_chain = save_current_space_and_thread (); | |
4046 | ||
35df4500 | 4047 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4048 | |
35df4500 | 4049 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
4050 | |
4051 | do_cleanups (old_chain); | |
4052 | return ret; | |
4053 | } | |
4054 | ||
c906108c SS |
4055 | /* Clear the "inserted" flag in all breakpoints. */ |
4056 | ||
25b22b0a | 4057 | void |
fba45db2 | 4058 | mark_breakpoints_out (void) |
c906108c | 4059 | { |
35df4500 | 4060 | struct bp_location *bl, **blp_tmp; |
c906108c | 4061 | |
35df4500 | 4062 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 4063 | if (bl->pspace == current_program_space) |
35df4500 | 4064 | bl->inserted = 0; |
c906108c SS |
4065 | } |
4066 | ||
53a5351d JM |
4067 | /* Clear the "inserted" flag in all breakpoints and delete any |
4068 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4069 | |
4070 | Plus other such housekeeping that has to be done for breakpoints | |
4071 | between runs. | |
4072 | ||
53a5351d JM |
4073 | Note: this function gets called at the end of a run (by |
4074 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4075 | init_wait_for_inferior). */ |
c906108c SS |
4076 | |
4077 | ||
4078 | ||
4079 | void | |
fba45db2 | 4080 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4081 | { |
35df4500 TJB |
4082 | struct breakpoint *b, *b_tmp; |
4083 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 4084 | int ix; |
6c95b8df | 4085 | struct program_space *pspace = current_program_space; |
c906108c | 4086 | |
50c71eaf PA |
4087 | /* If breakpoint locations are shared across processes, then there's |
4088 | nothing to do. */ | |
f5656ead | 4089 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4090 | return; |
4091 | ||
1a853c52 | 4092 | mark_breakpoints_out (); |
075f6582 | 4093 | |
35df4500 | 4094 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 4095 | { |
6c95b8df PA |
4096 | if (b->loc && b->loc->pspace != pspace) |
4097 | continue; | |
4098 | ||
c5aa993b JM |
4099 | switch (b->type) |
4100 | { | |
4101 | case bp_call_dummy: | |
e2e4d78b | 4102 | case bp_longjmp_call_dummy: |
c906108c | 4103 | |
c5aa993b | 4104 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
4105 | cause problems when the inferior is rerun, so we better get |
4106 | rid of it. */ | |
4107 | ||
4108 | case bp_watchpoint_scope: | |
4109 | ||
4110 | /* Also get rid of scope breakpoints. */ | |
4111 | ||
4112 | case bp_shlib_event: | |
4113 | ||
4114 | /* Also remove solib event breakpoints. Their addresses may | |
4115 | have changed since the last time we ran the program. | |
4116 | Actually we may now be debugging against different target; | |
4117 | and so the solib backend that installed this breakpoint may | |
4118 | not be used in by the target. E.g., | |
4119 | ||
4120 | (gdb) file prog-linux | |
4121 | (gdb) run # native linux target | |
4122 | ... | |
4123 | (gdb) kill | |
4124 | (gdb) file prog-win.exe | |
4125 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4126 | */ | |
c906108c | 4127 | |
f59f708a PA |
4128 | case bp_step_resume: |
4129 | ||
4130 | /* Also remove step-resume breakpoints. */ | |
4131 | ||
7c16b83e PA |
4132 | case bp_single_step: |
4133 | ||
4134 | /* Also remove single-step breakpoints. */ | |
4135 | ||
c5aa993b JM |
4136 | delete_breakpoint (b); |
4137 | break; | |
c906108c | 4138 | |
c5aa993b JM |
4139 | case bp_watchpoint: |
4140 | case bp_hardware_watchpoint: | |
4141 | case bp_read_watchpoint: | |
4142 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4143 | { |
4144 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4145 | |
3a5c3e22 PA |
4146 | /* Likewise for watchpoints on local expressions. */ |
4147 | if (w->exp_valid_block != NULL) | |
4148 | delete_breakpoint (b); | |
4149 | else if (context == inf_starting) | |
4150 | { | |
4151 | /* Reset val field to force reread of starting value in | |
4152 | insert_breakpoints. */ | |
4153 | if (w->val) | |
4154 | value_free (w->val); | |
4155 | w->val = NULL; | |
4156 | w->val_valid = 0; | |
c860120c | 4157 | } |
3a5c3e22 | 4158 | } |
c5aa993b JM |
4159 | break; |
4160 | default: | |
c5aa993b JM |
4161 | break; |
4162 | } | |
4163 | } | |
1c5cfe86 PA |
4164 | |
4165 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4166 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4167 | decref_bp_location (&bl); | |
1c5cfe86 | 4168 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4169 | } |
4170 | ||
6c95b8df PA |
4171 | /* These functions concern about actual breakpoints inserted in the |
4172 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4173 | we need to hop over the bkpt --- so we check for address space | |
4174 | match, not program space. */ | |
4175 | ||
c2c6d25f JM |
4176 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4177 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4178 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4179 | permanent breakpoint. | |
4180 | - When continuing from a location with an ordinary breakpoint, we | |
4181 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4182 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4183 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4184 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4185 | |
c2c6d25f | 4186 | enum breakpoint_here |
6c95b8df | 4187 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4188 | { |
35df4500 | 4189 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4190 | int any_breakpoint_here = 0; |
c906108c | 4191 | |
35df4500 | 4192 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4193 | { |
35df4500 TJB |
4194 | if (bl->loc_type != bp_loc_software_breakpoint |
4195 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4196 | continue; |
4197 | ||
f1310107 | 4198 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4199 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4200 | || bl->permanent) |
f1310107 | 4201 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4202 | { |
4203 | if (overlay_debugging | |
35df4500 TJB |
4204 | && section_is_overlay (bl->section) |
4205 | && !section_is_mapped (bl->section)) | |
075f6582 | 4206 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4207 | else if (bl->permanent) |
075f6582 DJ |
4208 | return permanent_breakpoint_here; |
4209 | else | |
4210 | any_breakpoint_here = 1; | |
4211 | } | |
4212 | } | |
c906108c | 4213 | |
c2c6d25f | 4214 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
4215 | } |
4216 | ||
1c5cfe86 PA |
4217 | /* Return true if there's a moribund breakpoint at PC. */ |
4218 | ||
4219 | int | |
6c95b8df | 4220 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4221 | { |
4222 | struct bp_location *loc; | |
4223 | int ix; | |
4224 | ||
4225 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4226 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4227 | return 1; |
4228 | ||
4229 | return 0; | |
4230 | } | |
c2c6d25f | 4231 | |
f7ce857f PA |
4232 | /* Returns non-zero iff BL is inserted at PC, in address space |
4233 | ASPACE. */ | |
4234 | ||
4235 | static int | |
4236 | bp_location_inserted_here_p (struct bp_location *bl, | |
4237 | struct address_space *aspace, CORE_ADDR pc) | |
4238 | { | |
4239 | if (bl->inserted | |
4240 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4241 | aspace, pc)) | |
4242 | { | |
4243 | if (overlay_debugging | |
4244 | && section_is_overlay (bl->section) | |
4245 | && !section_is_mapped (bl->section)) | |
4246 | return 0; /* unmapped overlay -- can't be a match */ | |
4247 | else | |
4248 | return 1; | |
4249 | } | |
4250 | return 0; | |
4251 | } | |
4252 | ||
a1fd2fa5 | 4253 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4254 | |
4255 | int | |
a1fd2fa5 | 4256 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4257 | { |
f7ce857f PA |
4258 | struct bp_location **blp, **blp_tmp = NULL; |
4259 | struct bp_location *bl; | |
c906108c | 4260 | |
f7ce857f | 4261 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4262 | { |
f7ce857f PA |
4263 | struct bp_location *bl = *blp; |
4264 | ||
35df4500 TJB |
4265 | if (bl->loc_type != bp_loc_software_breakpoint |
4266 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4267 | continue; |
4268 | ||
f7ce857f PA |
4269 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4270 | return 1; | |
c5aa993b | 4271 | } |
c36b740a VP |
4272 | return 0; |
4273 | } | |
4274 | ||
a1fd2fa5 PA |
4275 | /* This function returns non-zero iff there is a software breakpoint |
4276 | inserted at PC. */ | |
c36b740a VP |
4277 | |
4278 | int | |
a1fd2fa5 PA |
4279 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
4280 | CORE_ADDR pc) | |
4fa8626c | 4281 | { |
f7ce857f PA |
4282 | struct bp_location **blp, **blp_tmp = NULL; |
4283 | struct bp_location *bl; | |
4fa8626c | 4284 | |
f7ce857f | 4285 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4286 | { |
f7ce857f PA |
4287 | struct bp_location *bl = *blp; |
4288 | ||
35df4500 | 4289 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4290 | continue; |
4291 | ||
f7ce857f PA |
4292 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4293 | return 1; | |
4fa8626c DJ |
4294 | } |
4295 | ||
4296 | return 0; | |
9c02b525 PA |
4297 | } |
4298 | ||
4299 | /* See breakpoint.h. */ | |
4300 | ||
4301 | int | |
4302 | hardware_breakpoint_inserted_here_p (struct address_space *aspace, | |
4303 | CORE_ADDR pc) | |
4304 | { | |
4305 | struct bp_location **blp, **blp_tmp = NULL; | |
4306 | struct bp_location *bl; | |
4307 | ||
4308 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4309 | { | |
4310 | struct bp_location *bl = *blp; | |
4311 | ||
4312 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4313 | continue; | |
4314 | ||
4315 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4316 | return 1; | |
4317 | } | |
4318 | ||
4319 | return 0; | |
4fa8626c DJ |
4320 | } |
4321 | ||
9093389c PA |
4322 | int |
4323 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4324 | CORE_ADDR addr, ULONGEST len) | |
4325 | { | |
4326 | struct breakpoint *bpt; | |
4327 | ||
4328 | ALL_BREAKPOINTS (bpt) | |
4329 | { | |
4330 | struct bp_location *loc; | |
4331 | ||
4332 | if (bpt->type != bp_hardware_watchpoint | |
4333 | && bpt->type != bp_access_watchpoint) | |
4334 | continue; | |
4335 | ||
4336 | if (!breakpoint_enabled (bpt)) | |
4337 | continue; | |
4338 | ||
4339 | for (loc = bpt->loc; loc; loc = loc->next) | |
4340 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4341 | { | |
4342 | CORE_ADDR l, h; | |
4343 | ||
4344 | /* Check for intersection. */ | |
4345 | l = max (loc->address, addr); | |
4346 | h = min (loc->address + loc->length, addr + len); | |
4347 | if (l < h) | |
4348 | return 1; | |
4349 | } | |
4350 | } | |
4351 | return 0; | |
4352 | } | |
c906108c | 4353 | \f |
c5aa993b | 4354 | |
c906108c SS |
4355 | /* bpstat stuff. External routines' interfaces are documented |
4356 | in breakpoint.h. */ | |
4357 | ||
4358 | int | |
c326b90e | 4359 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4360 | { |
533be4dd | 4361 | return (ep->type == bp_catchpoint); |
c906108c SS |
4362 | } |
4363 | ||
f431efe5 PA |
4364 | /* Frees any storage that is part of a bpstat. Does not walk the |
4365 | 'next' chain. */ | |
4366 | ||
4367 | static void | |
198757a8 VP |
4368 | bpstat_free (bpstat bs) |
4369 | { | |
4370 | if (bs->old_val != NULL) | |
4371 | value_free (bs->old_val); | |
9add0f1b | 4372 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4373 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4374 | xfree (bs); |
4375 | } | |
4376 | ||
c906108c SS |
4377 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4378 | Also free any storage that is part of a bpstat. */ | |
4379 | ||
4380 | void | |
fba45db2 | 4381 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4382 | { |
4383 | bpstat p; | |
4384 | bpstat q; | |
4385 | ||
4386 | if (bsp == 0) | |
4387 | return; | |
4388 | p = *bsp; | |
4389 | while (p != NULL) | |
4390 | { | |
4391 | q = p->next; | |
198757a8 | 4392 | bpstat_free (p); |
c906108c SS |
4393 | p = q; |
4394 | } | |
4395 | *bsp = NULL; | |
4396 | } | |
4397 | ||
4398 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4399 | is part of the bpstat is copied as well. */ | |
4400 | ||
4401 | bpstat | |
fba45db2 | 4402 | bpstat_copy (bpstat bs) |
c906108c SS |
4403 | { |
4404 | bpstat p = NULL; | |
4405 | bpstat tmp; | |
4406 | bpstat retval = NULL; | |
4407 | ||
4408 | if (bs == NULL) | |
4409 | return bs; | |
4410 | ||
4411 | for (; bs != NULL; bs = bs->next) | |
4412 | { | |
4413 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4414 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4415 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4416 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4417 | if (bs->old_val != NULL) |
3c3185ac JK |
4418 | { |
4419 | tmp->old_val = value_copy (bs->old_val); | |
4420 | release_value (tmp->old_val); | |
4421 | } | |
31cc81e9 | 4422 | |
c906108c SS |
4423 | if (p == NULL) |
4424 | /* This is the first thing in the chain. */ | |
4425 | retval = tmp; | |
4426 | else | |
4427 | p->next = tmp; | |
4428 | p = tmp; | |
4429 | } | |
4430 | p->next = NULL; | |
4431 | return retval; | |
4432 | } | |
4433 | ||
4a64f543 | 4434 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4435 | |
4436 | bpstat | |
fba45db2 | 4437 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4438 | { |
c5aa993b JM |
4439 | if (bsp == NULL) |
4440 | return NULL; | |
c906108c | 4441 | |
c5aa993b JM |
4442 | for (; bsp != NULL; bsp = bsp->next) |
4443 | { | |
f431efe5 | 4444 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4445 | return bsp; |
4446 | } | |
c906108c SS |
4447 | return NULL; |
4448 | } | |
4449 | ||
ab04a2af TT |
4450 | /* See breakpoint.h. */ |
4451 | ||
47591c29 | 4452 | int |
427cd150 | 4453 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4454 | { |
ab04a2af TT |
4455 | for (; bsp != NULL; bsp = bsp->next) |
4456 | { | |
427cd150 TT |
4457 | if (bsp->breakpoint_at == NULL) |
4458 | { | |
4459 | /* A moribund location can never explain a signal other than | |
4460 | GDB_SIGNAL_TRAP. */ | |
4461 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4462 | return 1; |
427cd150 TT |
4463 | } |
4464 | else | |
47591c29 PA |
4465 | { |
4466 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4467 | sig)) | |
4468 | return 1; | |
4469 | } | |
ab04a2af TT |
4470 | } |
4471 | ||
47591c29 | 4472 | return 0; |
ab04a2af TT |
4473 | } |
4474 | ||
4a64f543 MS |
4475 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4476 | stopped at. *BSP upon return is a bpstat which points to the | |
4477 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4478 | good for anything but further calls to bpstat_num). | |
4479 | ||
8671a17b PA |
4480 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4481 | Return -1 if stopped at a breakpoint that has been deleted since | |
4482 | we set it. | |
4483 | Return 1 otherwise. */ | |
c906108c SS |
4484 | |
4485 | int | |
8671a17b | 4486 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4487 | { |
4488 | struct breakpoint *b; | |
4489 | ||
4490 | if ((*bsp) == NULL) | |
4491 | return 0; /* No more breakpoint values */ | |
8671a17b | 4492 | |
4a64f543 MS |
4493 | /* We assume we'll never have several bpstats that correspond to a |
4494 | single breakpoint -- otherwise, this function might return the | |
4495 | same number more than once and this will look ugly. */ | |
f431efe5 | 4496 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4497 | *bsp = (*bsp)->next; |
4498 | if (b == NULL) | |
4499 | return -1; /* breakpoint that's been deleted since */ | |
4500 | ||
4501 | *num = b->number; /* We have its number */ | |
4502 | return 1; | |
c906108c SS |
4503 | } |
4504 | ||
e93ca019 | 4505 | /* See breakpoint.h. */ |
c906108c SS |
4506 | |
4507 | void | |
e93ca019 | 4508 | bpstat_clear_actions (void) |
c906108c | 4509 | { |
e93ca019 JK |
4510 | struct thread_info *tp; |
4511 | bpstat bs; | |
4512 | ||
4513 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4514 | return; | |
4515 | ||
4516 | tp = find_thread_ptid (inferior_ptid); | |
4517 | if (tp == NULL) | |
4518 | return; | |
4519 | ||
4520 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4521 | { |
9add0f1b | 4522 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4523 | |
c906108c SS |
4524 | if (bs->old_val != NULL) |
4525 | { | |
4526 | value_free (bs->old_val); | |
4527 | bs->old_val = NULL; | |
4528 | } | |
4529 | } | |
4530 | } | |
4531 | ||
f3b1572e PA |
4532 | /* Called when a command is about to proceed the inferior. */ |
4533 | ||
4534 | static void | |
4535 | breakpoint_about_to_proceed (void) | |
4536 | { | |
4537 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4538 | { | |
4539 | struct thread_info *tp = inferior_thread (); | |
4540 | ||
4541 | /* Allow inferior function calls in breakpoint commands to not | |
4542 | interrupt the command list. When the call finishes | |
4543 | successfully, the inferior will be standing at the same | |
4544 | breakpoint as if nothing happened. */ | |
16c381f0 | 4545 | if (tp->control.in_infcall) |
f3b1572e PA |
4546 | return; |
4547 | } | |
4548 | ||
4549 | breakpoint_proceeded = 1; | |
4550 | } | |
4551 | ||
4a64f543 MS |
4552 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4553 | command. */ | |
c906108c | 4554 | static void |
4efb68b1 | 4555 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4556 | { |
4557 | executing_breakpoint_commands = 0; | |
4558 | } | |
4559 | ||
abf85f46 JK |
4560 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4561 | or its equivalent. */ | |
4562 | ||
4563 | static int | |
4564 | command_line_is_silent (struct command_line *cmd) | |
4565 | { | |
4f45d445 | 4566 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4567 | } |
4568 | ||
4a64f543 MS |
4569 | /* Execute all the commands associated with all the breakpoints at |
4570 | this location. Any of these commands could cause the process to | |
4571 | proceed beyond this point, etc. We look out for such changes by | |
4572 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4573 | |
347bddb7 PA |
4574 | Returns true if a breakpoint command resumed the inferior. In that |
4575 | case, it is the caller's responsibility to recall it again with the | |
4576 | bpstat of the current thread. */ | |
4577 | ||
4578 | static int | |
4579 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4580 | { |
4581 | bpstat bs; | |
4582 | struct cleanup *old_chain; | |
347bddb7 | 4583 | int again = 0; |
c906108c SS |
4584 | |
4585 | /* Avoid endless recursion if a `source' command is contained | |
4586 | in bs->commands. */ | |
4587 | if (executing_breakpoint_commands) | |
347bddb7 | 4588 | return 0; |
c906108c SS |
4589 | |
4590 | executing_breakpoint_commands = 1; | |
4591 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4592 | ||
cf6c5ffb TT |
4593 | prevent_dont_repeat (); |
4594 | ||
4a64f543 | 4595 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4596 | bs = *bsp; |
4597 | ||
4598 | breakpoint_proceeded = 0; | |
4599 | for (; bs != NULL; bs = bs->next) | |
4600 | { | |
9add0f1b | 4601 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4602 | struct command_line *cmd; |
4603 | struct cleanup *this_cmd_tree_chain; | |
4604 | ||
4605 | /* Take ownership of the BSP's command tree, if it has one. | |
4606 | ||
4607 | The command tree could legitimately contain commands like | |
4608 | 'step' and 'next', which call clear_proceed_status, which | |
4609 | frees stop_bpstat's command tree. To make sure this doesn't | |
4610 | free the tree we're executing out from under us, we need to | |
4611 | take ownership of the tree ourselves. Since a given bpstat's | |
4612 | commands are only executed once, we don't need to copy it; we | |
4613 | can clear the pointer in the bpstat, and make sure we free | |
4614 | the tree when we're done. */ | |
9add0f1b TT |
4615 | ccmd = bs->commands; |
4616 | bs->commands = NULL; | |
abf85f46 JK |
4617 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4618 | cmd = ccmd ? ccmd->commands : NULL; | |
4619 | if (command_line_is_silent (cmd)) | |
4620 | { | |
4621 | /* The action has been already done by bpstat_stop_status. */ | |
4622 | cmd = cmd->next; | |
4623 | } | |
6c50ab1c | 4624 | |
c906108c SS |
4625 | while (cmd != NULL) |
4626 | { | |
4627 | execute_control_command (cmd); | |
4628 | ||
4629 | if (breakpoint_proceeded) | |
4630 | break; | |
4631 | else | |
4632 | cmd = cmd->next; | |
4633 | } | |
6c50ab1c JB |
4634 | |
4635 | /* We can free this command tree now. */ | |
4636 | do_cleanups (this_cmd_tree_chain); | |
4637 | ||
c906108c | 4638 | if (breakpoint_proceeded) |
32c1e744 | 4639 | { |
5589af0e | 4640 | if (interpreter_async && target_can_async_p ()) |
347bddb7 PA |
4641 | /* If we are in async mode, then the target might be still |
4642 | running, not stopped at any breakpoint, so nothing for | |
4643 | us to do here -- just return to the event loop. */ | |
4644 | ; | |
32c1e744 VP |
4645 | else |
4646 | /* In sync mode, when execute_control_command returns | |
4647 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4648 | Breakpoint commands for that stop were not run, since |
4649 | execute_command does not run breakpoint commands -- | |
4650 | only command_line_handler does, but that one is not | |
4651 | involved in execution of breakpoint commands. So, we | |
4652 | can now execute breakpoint commands. It should be | |
4653 | noted that making execute_command do bpstat actions is | |
4654 | not an option -- in this case we'll have recursive | |
4655 | invocation of bpstat for each breakpoint with a | |
4656 | command, and can easily blow up GDB stack. Instead, we | |
4657 | return true, which will trigger the caller to recall us | |
4658 | with the new stop_bpstat. */ | |
4659 | again = 1; | |
4660 | break; | |
32c1e744 | 4661 | } |
c906108c | 4662 | } |
c2b8ed2c | 4663 | do_cleanups (old_chain); |
347bddb7 PA |
4664 | return again; |
4665 | } | |
4666 | ||
4667 | void | |
4668 | bpstat_do_actions (void) | |
4669 | { | |
353d1d73 JK |
4670 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4671 | ||
347bddb7 PA |
4672 | /* Do any commands attached to breakpoint we are stopped at. */ |
4673 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4674 | && target_has_execution | |
4675 | && !is_exited (inferior_ptid) | |
4676 | && !is_executing (inferior_ptid)) | |
4677 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4678 | and only return when it is stopped at the next breakpoint, we | |
4679 | keep doing breakpoint actions until it returns false to | |
4680 | indicate the inferior was not resumed. */ | |
16c381f0 | 4681 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4682 | break; |
353d1d73 JK |
4683 | |
4684 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4685 | } |
4686 | ||
fa4727a6 DJ |
4687 | /* Print out the (old or new) value associated with a watchpoint. */ |
4688 | ||
4689 | static void | |
4690 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4691 | { | |
4692 | if (val == NULL) | |
4693 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4694 | else | |
79a45b7d TT |
4695 | { |
4696 | struct value_print_options opts; | |
4697 | get_user_print_options (&opts); | |
4698 | value_print (val, stream, &opts); | |
4699 | } | |
fa4727a6 DJ |
4700 | } |
4701 | ||
e514a9d6 | 4702 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4703 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4704 | 'print_it' in the bpstat structure. Under some circumstances we |
4705 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4706 | normal_stop(). */ |
e514a9d6 JM |
4707 | |
4708 | static enum print_stop_action | |
4709 | print_bp_stop_message (bpstat bs) | |
4710 | { | |
4711 | switch (bs->print_it) | |
4712 | { | |
4713 | case print_it_noop: | |
4a64f543 | 4714 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4715 | return PRINT_UNKNOWN; |
4716 | break; | |
4717 | ||
4718 | case print_it_done: | |
4719 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4720 | relevant messages. */ |
e514a9d6 JM |
4721 | return PRINT_SRC_AND_LOC; |
4722 | break; | |
4723 | ||
4724 | case print_it_normal: | |
4f8d1dc6 | 4725 | { |
f431efe5 PA |
4726 | struct breakpoint *b = bs->breakpoint_at; |
4727 | ||
1a6a67de TJB |
4728 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4729 | which has since been deleted. */ | |
4730 | if (b == NULL) | |
4731 | return PRINT_UNKNOWN; | |
4732 | ||
348d480f PA |
4733 | /* Normal case. Call the breakpoint's print_it method. */ |
4734 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4735 | } |
348d480f | 4736 | break; |
3086aeae | 4737 | |
e514a9d6 | 4738 | default: |
8e65ff28 | 4739 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4740 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4741 | break; |
c906108c | 4742 | } |
c906108c SS |
4743 | } |
4744 | ||
edcc5120 TT |
4745 | /* A helper function that prints a shared library stopped event. */ |
4746 | ||
4747 | static void | |
4748 | print_solib_event (int is_catchpoint) | |
4749 | { | |
4750 | int any_deleted | |
4751 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4752 | int any_added | |
4753 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4754 | ||
4755 | if (!is_catchpoint) | |
4756 | { | |
4757 | if (any_added || any_deleted) | |
4758 | ui_out_text (current_uiout, | |
4759 | _("Stopped due to shared library event:\n")); | |
4760 | else | |
4761 | ui_out_text (current_uiout, | |
4762 | _("Stopped due to shared library event (no " | |
4763 | "libraries added or removed)\n")); | |
4764 | } | |
4765 | ||
4766 | if (ui_out_is_mi_like_p (current_uiout)) | |
4767 | ui_out_field_string (current_uiout, "reason", | |
4768 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4769 | ||
4770 | if (any_deleted) | |
4771 | { | |
4772 | struct cleanup *cleanup; | |
4773 | char *name; | |
4774 | int ix; | |
4775 | ||
4776 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4777 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4778 | "removed"); | |
4779 | for (ix = 0; | |
4780 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4781 | ix, name); | |
4782 | ++ix) | |
4783 | { | |
4784 | if (ix > 0) | |
4785 | ui_out_text (current_uiout, " "); | |
4786 | ui_out_field_string (current_uiout, "library", name); | |
4787 | ui_out_text (current_uiout, "\n"); | |
4788 | } | |
4789 | ||
4790 | do_cleanups (cleanup); | |
4791 | } | |
4792 | ||
4793 | if (any_added) | |
4794 | { | |
4795 | struct so_list *iter; | |
4796 | int ix; | |
4797 | struct cleanup *cleanup; | |
4798 | ||
4799 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4800 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4801 | "added"); | |
4802 | for (ix = 0; | |
4803 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4804 | ix, iter); | |
4805 | ++ix) | |
4806 | { | |
4807 | if (ix > 0) | |
4808 | ui_out_text (current_uiout, " "); | |
4809 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4810 | ui_out_text (current_uiout, "\n"); | |
4811 | } | |
4812 | ||
4813 | do_cleanups (cleanup); | |
4814 | } | |
4815 | } | |
4816 | ||
e514a9d6 JM |
4817 | /* Print a message indicating what happened. This is called from |
4818 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4819 | list - a list of the eventpoints that caused this stop. KIND is |
4820 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4821 | routine calls the generic print routine for printing a message |
4822 | about reasons for stopping. This will print (for example) the | |
4823 | "Breakpoint n," part of the output. The return value of this | |
4824 | routine is one of: | |
c906108c | 4825 | |
4a64f543 | 4826 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4827 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4828 | code to print the location. An example is |
c5aa993b JM |
4829 | "Breakpoint 1, " which should be followed by |
4830 | the location. | |
917317f4 | 4831 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4832 | to also print the location part of the message. |
4833 | An example is the catch/throw messages, which | |
4a64f543 | 4834 | don't require a location appended to the end. |
917317f4 | 4835 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4836 | further info to be printed. */ |
c906108c | 4837 | |
917317f4 | 4838 | enum print_stop_action |
36dfb11c | 4839 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4840 | { |
4841 | int val; | |
c5aa993b | 4842 | |
c906108c | 4843 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4844 | (Currently all watchpoints go on the bpstat whether hit or not. |
4845 | That probably could (should) be changed, provided care is taken | |
c906108c | 4846 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4847 | for (; bs; bs = bs->next) |
4848 | { | |
4849 | val = print_bp_stop_message (bs); | |
4850 | if (val == PRINT_SRC_ONLY | |
4851 | || val == PRINT_SRC_AND_LOC | |
4852 | || val == PRINT_NOTHING) | |
4853 | return val; | |
4854 | } | |
c906108c | 4855 | |
36dfb11c TT |
4856 | /* If we had hit a shared library event breakpoint, |
4857 | print_bp_stop_message would print out this message. If we hit an | |
4858 | OS-level shared library event, do the same thing. */ | |
4859 | if (kind == TARGET_WAITKIND_LOADED) | |
4860 | { | |
edcc5120 | 4861 | print_solib_event (0); |
36dfb11c TT |
4862 | return PRINT_NOTHING; |
4863 | } | |
4864 | ||
e514a9d6 | 4865 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4866 | with and nothing was printed. */ |
917317f4 | 4867 | return PRINT_UNKNOWN; |
c906108c SS |
4868 | } |
4869 | ||
c42bd95a DE |
4870 | /* Evaluate the expression EXP and return 1 if value is zero. |
4871 | This returns the inverse of the condition because it is called | |
4872 | from catch_errors which returns 0 if an exception happened, and if an | |
4873 | exception happens we want execution to stop. | |
4a64f543 | 4874 | The argument is a "struct expression *" that has been cast to a |
c42bd95a | 4875 | "void *" to make it pass through catch_errors. */ |
c906108c SS |
4876 | |
4877 | static int | |
4efb68b1 | 4878 | breakpoint_cond_eval (void *exp) |
c906108c | 4879 | { |
278cd55f | 4880 | struct value *mark = value_mark (); |
c5aa993b | 4881 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4882 | |
c906108c SS |
4883 | value_free_to_mark (mark); |
4884 | return i; | |
4885 | } | |
4886 | ||
5760d0ab | 4887 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4888 | |
4889 | static bpstat | |
5760d0ab | 4890 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4891 | { |
4892 | bpstat bs; | |
4893 | ||
4894 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4895 | bs->next = NULL; |
4896 | **bs_link_pointer = bs; | |
4897 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4898 | bs->breakpoint_at = bl->owner; |
4899 | bs->bp_location_at = bl; | |
4900 | incref_bp_location (bl); | |
c906108c SS |
4901 | /* If the condition is false, etc., don't do the commands. */ |
4902 | bs->commands = NULL; | |
4903 | bs->old_val = NULL; | |
4904 | bs->print_it = print_it_normal; | |
4905 | return bs; | |
4906 | } | |
4907 | \f | |
d983da9c DJ |
4908 | /* The target has stopped with waitstatus WS. Check if any hardware |
4909 | watchpoints have triggered, according to the target. */ | |
4910 | ||
4911 | int | |
4912 | watchpoints_triggered (struct target_waitstatus *ws) | |
4913 | { | |
d92524f1 | 4914 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4915 | CORE_ADDR addr; |
4916 | struct breakpoint *b; | |
4917 | ||
4918 | if (!stopped_by_watchpoint) | |
4919 | { | |
4920 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4921 | as not triggered. */ | |
4922 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4923 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4924 | { |
4925 | struct watchpoint *w = (struct watchpoint *) b; | |
4926 | ||
4927 | w->watchpoint_triggered = watch_triggered_no; | |
4928 | } | |
d983da9c DJ |
4929 | |
4930 | return 0; | |
4931 | } | |
4932 | ||
4933 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4934 | { | |
4935 | /* We were stopped by a watchpoint, but we don't know where. | |
4936 | Mark all watchpoints as unknown. */ | |
4937 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4938 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4939 | { |
4940 | struct watchpoint *w = (struct watchpoint *) b; | |
4941 | ||
4942 | w->watchpoint_triggered = watch_triggered_unknown; | |
4943 | } | |
d983da9c | 4944 | |
3c4797ba | 4945 | return 1; |
d983da9c DJ |
4946 | } |
4947 | ||
4948 | /* The target could report the data address. Mark watchpoints | |
4949 | affected by this data address as triggered, and all others as not | |
4950 | triggered. */ | |
4951 | ||
4952 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4953 | if (is_hardware_watchpoint (b)) |
d983da9c | 4954 | { |
3a5c3e22 | 4955 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4956 | struct bp_location *loc; |
d983da9c | 4957 | |
3a5c3e22 | 4958 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4959 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4960 | { |
3a5c3e22 | 4961 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4962 | { |
3a5c3e22 PA |
4963 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4964 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4965 | |
4966 | if (newaddr == start) | |
4967 | { | |
3a5c3e22 | 4968 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4969 | break; |
4970 | } | |
4971 | } | |
4972 | /* Exact match not required. Within range is sufficient. */ | |
4973 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4974 | addr, loc->address, | |
4975 | loc->length)) | |
4976 | { | |
3a5c3e22 | 4977 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4978 | break; |
4979 | } | |
4980 | } | |
d983da9c DJ |
4981 | } |
4982 | ||
4983 | return 1; | |
4984 | } | |
4985 | ||
c906108c SS |
4986 | /* Possible return values for watchpoint_check (this can't be an enum |
4987 | because of check_errors). */ | |
4988 | /* The watchpoint has been deleted. */ | |
4989 | #define WP_DELETED 1 | |
4990 | /* The value has changed. */ | |
4991 | #define WP_VALUE_CHANGED 2 | |
4992 | /* The value has not changed. */ | |
4993 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4994 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4995 | #define WP_IGNORE 4 | |
c906108c SS |
4996 | |
4997 | #define BP_TEMPFLAG 1 | |
4998 | #define BP_HARDWAREFLAG 2 | |
4999 | ||
4a64f543 MS |
5000 | /* Evaluate watchpoint condition expression and check if its value |
5001 | changed. | |
553e4c11 JB |
5002 | |
5003 | P should be a pointer to struct bpstat, but is defined as a void * | |
5004 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
5005 | |
5006 | static int | |
4efb68b1 | 5007 | watchpoint_check (void *p) |
c906108c SS |
5008 | { |
5009 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 5010 | struct watchpoint *b; |
c906108c SS |
5011 | struct frame_info *fr; |
5012 | int within_current_scope; | |
5013 | ||
f431efe5 | 5014 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 5015 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 5016 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5017 | |
f6bc2008 PA |
5018 | /* If this is a local watchpoint, we only want to check if the |
5019 | watchpoint frame is in scope if the current thread is the thread | |
5020 | that was used to create the watchpoint. */ | |
5021 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5022 | return WP_IGNORE; |
f6bc2008 | 5023 | |
c906108c SS |
5024 | if (b->exp_valid_block == NULL) |
5025 | within_current_scope = 1; | |
5026 | else | |
5027 | { | |
edb3359d DJ |
5028 | struct frame_info *frame = get_current_frame (); |
5029 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
5030 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5031 | ||
c9cf6e20 | 5032 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5033 | still in the function but the stack frame has already been |
5034 | invalidated. Since we can't rely on the values of local | |
5035 | variables after the stack has been destroyed, we are treating | |
5036 | the watchpoint in that state as `not changed' without further | |
5037 | checking. Don't mark watchpoints as changed if the current | |
5038 | frame is in an epilogue - even if they are in some other | |
5039 | frame, our view of the stack is likely to be wrong and | |
5040 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5041 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5042 | return WP_IGNORE; |
a0f49112 | 5043 | |
101dcfbe | 5044 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5045 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5046 | |
5047 | /* If we've gotten confused in the unwinder, we might have | |
5048 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5049 | if (within_current_scope) |
5050 | { | |
5051 | struct symbol *function; | |
5052 | ||
5053 | function = get_frame_function (fr); | |
5054 | if (function == NULL | |
5055 | || !contained_in (b->exp_valid_block, | |
5056 | SYMBOL_BLOCK_VALUE (function))) | |
5057 | within_current_scope = 0; | |
5058 | } | |
69fbadd5 | 5059 | |
edb3359d | 5060 | if (within_current_scope) |
c906108c SS |
5061 | /* If we end up stopping, the current frame will get selected |
5062 | in normal_stop. So this call to select_frame won't affect | |
5063 | the user. */ | |
0f7d239c | 5064 | select_frame (fr); |
c906108c | 5065 | } |
c5aa993b | 5066 | |
c906108c SS |
5067 | if (within_current_scope) |
5068 | { | |
4a64f543 MS |
5069 | /* We use value_{,free_to_}mark because it could be a *long* |
5070 | time before we return to the command level and call | |
5071 | free_all_values. We can't call free_all_values because we | |
5072 | might be in the middle of evaluating a function call. */ | |
c906108c | 5073 | |
0cf6dd15 | 5074 | int pc = 0; |
9c06b0b4 | 5075 | struct value *mark; |
fa4727a6 DJ |
5076 | struct value *new_val; |
5077 | ||
3a5c3e22 | 5078 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
5079 | /* Since we don't know the exact trigger address (from |
5080 | stopped_data_address), just tell the user we've triggered | |
5081 | a mask watchpoint. */ | |
5082 | return WP_VALUE_CHANGED; | |
5083 | ||
5084 | mark = value_mark (); | |
3a1115a0 | 5085 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 5086 | |
bb9d5f81 PP |
5087 | if (b->val_bitsize != 0) |
5088 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5089 | ||
4a64f543 MS |
5090 | /* We use value_equal_contents instead of value_equal because |
5091 | the latter coerces an array to a pointer, thus comparing just | |
5092 | the address of the array instead of its contents. This is | |
5093 | not what we want. */ | |
fa4727a6 | 5094 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 5095 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 5096 | { |
fa4727a6 DJ |
5097 | if (new_val != NULL) |
5098 | { | |
5099 | release_value (new_val); | |
5100 | value_free_to_mark (mark); | |
5101 | } | |
c906108c SS |
5102 | bs->old_val = b->val; |
5103 | b->val = new_val; | |
fa4727a6 | 5104 | b->val_valid = 1; |
c906108c SS |
5105 | return WP_VALUE_CHANGED; |
5106 | } | |
5107 | else | |
5108 | { | |
60e1c644 | 5109 | /* Nothing changed. */ |
c906108c | 5110 | value_free_to_mark (mark); |
c906108c SS |
5111 | return WP_VALUE_NOT_CHANGED; |
5112 | } | |
5113 | } | |
5114 | else | |
5115 | { | |
79a45e25 PA |
5116 | struct ui_out *uiout = current_uiout; |
5117 | ||
c906108c | 5118 | /* This seems like the only logical thing to do because |
c5aa993b JM |
5119 | if we temporarily ignored the watchpoint, then when |
5120 | we reenter the block in which it is valid it contains | |
5121 | garbage (in the case of a function, it may have two | |
5122 | garbage values, one before and one after the prologue). | |
5123 | So we can't even detect the first assignment to it and | |
5124 | watch after that (since the garbage may or may not equal | |
5125 | the first value assigned). */ | |
348d480f PA |
5126 | /* We print all the stop information in |
5127 | breakpoint_ops->print_it, but in this case, by the time we | |
5128 | call breakpoint_ops->print_it this bp will be deleted | |
5129 | already. So we have no choice but print the information | |
5130 | here. */ | |
9dc5e2a9 | 5131 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
5132 | ui_out_field_string |
5133 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 5134 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 5135 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
5136 | ui_out_text (uiout, |
5137 | " deleted because the program has left the block in\n\ | |
8b93c638 | 5138 | which its expression is valid.\n"); |
4ce44c66 | 5139 | |
cdac0397 | 5140 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 5141 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 5142 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5143 | |
5144 | return WP_DELETED; | |
5145 | } | |
5146 | } | |
5147 | ||
18a18393 | 5148 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5149 | breakpoint location BL. This function does not check if we should |
5150 | stop, only if BL explains the stop. */ | |
5151 | ||
18a18393 | 5152 | static int |
6c95b8df | 5153 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5154 | struct address_space *aspace, CORE_ADDR bp_addr, |
5155 | const struct target_waitstatus *ws) | |
18a18393 VP |
5156 | { |
5157 | struct breakpoint *b = bl->owner; | |
5158 | ||
348d480f | 5159 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5160 | gdb_assert (b != NULL); |
5161 | ||
09ac7c10 | 5162 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5163 | } |
5164 | ||
3a5c3e22 PA |
5165 | /* Determine if the watched values have actually changed, and we |
5166 | should stop. If not, set BS->stop to 0. */ | |
5167 | ||
18a18393 VP |
5168 | static void |
5169 | bpstat_check_watchpoint (bpstat bs) | |
5170 | { | |
2bdf28a0 | 5171 | const struct bp_location *bl; |
3a5c3e22 | 5172 | struct watchpoint *b; |
2bdf28a0 JK |
5173 | |
5174 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5175 | bl = bs->bp_location_at; |
2bdf28a0 | 5176 | gdb_assert (bl != NULL); |
3a5c3e22 | 5177 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5178 | gdb_assert (b != NULL); |
18a18393 | 5179 | |
18a18393 | 5180 | { |
18a18393 VP |
5181 | int must_check_value = 0; |
5182 | ||
3a5c3e22 | 5183 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
5184 | /* For a software watchpoint, we must always check the |
5185 | watched value. */ | |
5186 | must_check_value = 1; | |
5187 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5188 | /* We have a hardware watchpoint (read, write, or access) | |
5189 | and the target earlier reported an address watched by | |
5190 | this watchpoint. */ | |
5191 | must_check_value = 1; | |
5192 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 5193 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
5194 | /* We were stopped by a hardware watchpoint, but the target could |
5195 | not report the data address. We must check the watchpoint's | |
5196 | value. Access and read watchpoints are out of luck; without | |
5197 | a data address, we can't figure it out. */ | |
5198 | must_check_value = 1; | |
3a5c3e22 | 5199 | |
18a18393 VP |
5200 | if (must_check_value) |
5201 | { | |
3e43a32a MS |
5202 | char *message |
5203 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 5204 | b->base.number); |
18a18393 VP |
5205 | struct cleanup *cleanups = make_cleanup (xfree, message); |
5206 | int e = catch_errors (watchpoint_check, bs, message, | |
5207 | RETURN_MASK_ALL); | |
5208 | do_cleanups (cleanups); | |
5209 | switch (e) | |
5210 | { | |
5211 | case WP_DELETED: | |
5212 | /* We've already printed what needs to be printed. */ | |
5213 | bs->print_it = print_it_done; | |
5214 | /* Stop. */ | |
5215 | break; | |
60e1c644 PA |
5216 | case WP_IGNORE: |
5217 | bs->print_it = print_it_noop; | |
5218 | bs->stop = 0; | |
5219 | break; | |
18a18393 | 5220 | case WP_VALUE_CHANGED: |
3a5c3e22 | 5221 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 5222 | { |
85d721b8 PA |
5223 | /* There are two cases to consider here: |
5224 | ||
4a64f543 | 5225 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5226 | In that case, trust the target, and always report |
5227 | the watchpoint hit to the user. Even though | |
5228 | reads don't cause value changes, the value may | |
5229 | have changed since the last time it was read, and | |
5230 | since we're not trapping writes, we will not see | |
5231 | those, and as such we should ignore our notion of | |
5232 | old value. | |
5233 | ||
4a64f543 | 5234 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5235 | reads and writes. There are two ways this may |
5236 | happen: | |
5237 | ||
4a64f543 | 5238 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5239 | reads only, but can break on accesses (reads or |
5240 | writes), such as e.g., x86. We detect this case | |
5241 | at the time we try to insert read watchpoints. | |
5242 | ||
4a64f543 | 5243 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5244 | watchpoints, but, the user set an access or write |
5245 | watchpoint watching the same memory as this read | |
5246 | watchpoint. | |
5247 | ||
5248 | If we're watching memory writes as well as reads, | |
5249 | ignore watchpoint hits when we find that the | |
5250 | value hasn't changed, as reads don't cause | |
5251 | changes. This still gives false positives when | |
5252 | the program writes the same value to memory as | |
5253 | what there was already in memory (we will confuse | |
5254 | it for a read), but it's much better than | |
5255 | nothing. */ | |
5256 | ||
5257 | int other_write_watchpoint = 0; | |
5258 | ||
5259 | if (bl->watchpoint_type == hw_read) | |
5260 | { | |
5261 | struct breakpoint *other_b; | |
5262 | ||
5263 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5264 | if (other_b->type == bp_hardware_watchpoint |
5265 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5266 | { |
3a5c3e22 PA |
5267 | struct watchpoint *other_w = |
5268 | (struct watchpoint *) other_b; | |
5269 | ||
5270 | if (other_w->watchpoint_triggered | |
5271 | == watch_triggered_yes) | |
5272 | { | |
5273 | other_write_watchpoint = 1; | |
5274 | break; | |
5275 | } | |
85d721b8 PA |
5276 | } |
5277 | } | |
5278 | ||
5279 | if (other_write_watchpoint | |
5280 | || bl->watchpoint_type == hw_access) | |
5281 | { | |
5282 | /* We're watching the same memory for writes, | |
5283 | and the value changed since the last time we | |
5284 | updated it, so this trap must be for a write. | |
5285 | Ignore it. */ | |
5286 | bs->print_it = print_it_noop; | |
5287 | bs->stop = 0; | |
5288 | } | |
18a18393 VP |
5289 | } |
5290 | break; | |
5291 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
5292 | if (b->base.type == bp_hardware_watchpoint |
5293 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
5294 | { |
5295 | /* Don't stop: write watchpoints shouldn't fire if | |
5296 | the value hasn't changed. */ | |
5297 | bs->print_it = print_it_noop; | |
5298 | bs->stop = 0; | |
5299 | } | |
5300 | /* Stop. */ | |
5301 | break; | |
5302 | default: | |
5303 | /* Can't happen. */ | |
5304 | case 0: | |
5305 | /* Error from catch_errors. */ | |
3a5c3e22 | 5306 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 5307 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
5308 | /* We've already printed what needs to be printed. */ |
5309 | bs->print_it = print_it_done; | |
5310 | break; | |
5311 | } | |
5312 | } | |
5313 | else /* must_check_value == 0 */ | |
5314 | { | |
5315 | /* This is a case where some watchpoint(s) triggered, but | |
5316 | not at the address of this watchpoint, or else no | |
5317 | watchpoint triggered after all. So don't print | |
5318 | anything for this watchpoint. */ | |
5319 | bs->print_it = print_it_noop; | |
5320 | bs->stop = 0; | |
5321 | } | |
5322 | } | |
5323 | } | |
5324 | ||
7d4df6a4 DE |
5325 | /* For breakpoints that are currently marked as telling gdb to stop, |
5326 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5327 | of breakpoint referred to by BS. If we should not stop for this |
5328 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5329 | |
18a18393 VP |
5330 | static void |
5331 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5332 | { | |
2bdf28a0 JK |
5333 | const struct bp_location *bl; |
5334 | struct breakpoint *b; | |
7d4df6a4 DE |
5335 | int value_is_zero = 0; |
5336 | struct expression *cond; | |
5337 | ||
5338 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5339 | |
5340 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5341 | bl = bs->bp_location_at; |
2bdf28a0 | 5342 | gdb_assert (bl != NULL); |
f431efe5 | 5343 | b = bs->breakpoint_at; |
2bdf28a0 | 5344 | gdb_assert (b != NULL); |
18a18393 | 5345 | |
b775012e LM |
5346 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5347 | need to do so again since GDB does not know if we stopped due to a | |
5348 | breakpoint or a single step breakpoint. */ | |
5349 | ||
18a18393 | 5350 | if (frame_id_p (b->frame_id) |
edb3359d | 5351 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5352 | { |
7d4df6a4 DE |
5353 | bs->stop = 0; |
5354 | return; | |
5355 | } | |
60e1c644 | 5356 | |
12ab52e9 PA |
5357 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5358 | evaluating the condition if this isn't the specified | |
5359 | thread/task. */ | |
5360 | if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid)) | |
5361 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) | |
5362 | ||
6c1b0f7b DE |
5363 | { |
5364 | bs->stop = 0; | |
5365 | return; | |
5366 | } | |
5367 | ||
6dddc817 DE |
5368 | /* Evaluate extension language breakpoints that have a "stop" method |
5369 | implemented. */ | |
5370 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5371 | |
7d4df6a4 DE |
5372 | if (is_watchpoint (b)) |
5373 | { | |
5374 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5375 | |
7d4df6a4 DE |
5376 | cond = w->cond_exp; |
5377 | } | |
5378 | else | |
5379 | cond = bl->cond; | |
60e1c644 | 5380 | |
7d4df6a4 DE |
5381 | if (cond && b->disposition != disp_del_at_next_stop) |
5382 | { | |
5383 | int within_current_scope = 1; | |
5384 | struct watchpoint * w; | |
60e1c644 | 5385 | |
7d4df6a4 DE |
5386 | /* We use value_mark and value_free_to_mark because it could |
5387 | be a long time before we return to the command level and | |
5388 | call free_all_values. We can't call free_all_values | |
5389 | because we might be in the middle of evaluating a | |
5390 | function call. */ | |
5391 | struct value *mark = value_mark (); | |
5392 | ||
5393 | if (is_watchpoint (b)) | |
5394 | w = (struct watchpoint *) b; | |
5395 | else | |
5396 | w = NULL; | |
5397 | ||
5398 | /* Need to select the frame, with all that implies so that | |
5399 | the conditions will have the right context. Because we | |
5400 | use the frame, we will not see an inlined function's | |
5401 | variables when we arrive at a breakpoint at the start | |
5402 | of the inlined function; the current frame will be the | |
5403 | call site. */ | |
5404 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5405 | select_frame (get_current_frame ()); | |
5406 | else | |
18a18393 | 5407 | { |
7d4df6a4 DE |
5408 | struct frame_info *frame; |
5409 | ||
5410 | /* For local watchpoint expressions, which particular | |
5411 | instance of a local is being watched matters, so we | |
5412 | keep track of the frame to evaluate the expression | |
5413 | in. To evaluate the condition however, it doesn't | |
5414 | really matter which instantiation of the function | |
5415 | where the condition makes sense triggers the | |
5416 | watchpoint. This allows an expression like "watch | |
5417 | global if q > 10" set in `func', catch writes to | |
5418 | global on all threads that call `func', or catch | |
5419 | writes on all recursive calls of `func' by a single | |
5420 | thread. We simply always evaluate the condition in | |
5421 | the innermost frame that's executing where it makes | |
5422 | sense to evaluate the condition. It seems | |
5423 | intuitive. */ | |
5424 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5425 | if (frame != NULL) | |
5426 | select_frame (frame); | |
5427 | else | |
5428 | within_current_scope = 0; | |
18a18393 | 5429 | } |
7d4df6a4 DE |
5430 | if (within_current_scope) |
5431 | value_is_zero | |
5432 | = catch_errors (breakpoint_cond_eval, cond, | |
5433 | "Error in testing breakpoint condition:\n", | |
5434 | RETURN_MASK_ALL); | |
5435 | else | |
18a18393 | 5436 | { |
7d4df6a4 DE |
5437 | warning (_("Watchpoint condition cannot be tested " |
5438 | "in the current scope")); | |
5439 | /* If we failed to set the right context for this | |
5440 | watchpoint, unconditionally report it. */ | |
5441 | value_is_zero = 0; | |
18a18393 | 5442 | } |
7d4df6a4 DE |
5443 | /* FIXME-someday, should give breakpoint #. */ |
5444 | value_free_to_mark (mark); | |
18a18393 | 5445 | } |
7d4df6a4 DE |
5446 | |
5447 | if (cond && value_is_zero) | |
5448 | { | |
5449 | bs->stop = 0; | |
5450 | } | |
7d4df6a4 DE |
5451 | else if (b->ignore_count > 0) |
5452 | { | |
5453 | b->ignore_count--; | |
5454 | bs->stop = 0; | |
5455 | /* Increase the hit count even though we don't stop. */ | |
5456 | ++(b->hit_count); | |
5457 | observer_notify_breakpoint_modified (b); | |
5458 | } | |
18a18393 VP |
5459 | } |
5460 | ||
1cf4d951 PA |
5461 | /* Returns true if we need to track moribund locations of LOC's type |
5462 | on the current target. */ | |
5463 | ||
5464 | static int | |
5465 | need_moribund_for_location_type (struct bp_location *loc) | |
5466 | { | |
5467 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5468 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5469 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5470 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5471 | } | |
5472 | ||
18a18393 | 5473 | |
9709f61c | 5474 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5475 | BP_ADDR in thread PTID. |
c906108c | 5476 | |
d983da9c | 5477 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5478 | don't understand this stop. Result is a chain of bpstat's such |
5479 | that: | |
c906108c | 5480 | |
c5aa993b | 5481 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5482 | |
c5aa993b | 5483 | if we understand why we stopped, the result is not null. |
c906108c | 5484 | |
c5aa993b JM |
5485 | Each element of the chain refers to a particular breakpoint or |
5486 | watchpoint at which we have stopped. (We may have stopped for | |
5487 | several reasons concurrently.) | |
c906108c | 5488 | |
c5aa993b JM |
5489 | Each element of the chain has valid next, breakpoint_at, |
5490 | commands, FIXME??? fields. */ | |
c906108c SS |
5491 | |
5492 | bpstat | |
6c95b8df | 5493 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5494 | CORE_ADDR bp_addr, ptid_t ptid, |
5495 | const struct target_waitstatus *ws) | |
c906108c | 5496 | { |
0d381245 | 5497 | struct breakpoint *b = NULL; |
afe38095 | 5498 | struct bp_location *bl; |
20874c92 | 5499 | struct bp_location *loc; |
5760d0ab JK |
5500 | /* First item of allocated bpstat's. */ |
5501 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5502 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5503 | bpstat bs; |
20874c92 | 5504 | int ix; |
429374b8 | 5505 | int need_remove_insert; |
f431efe5 | 5506 | int removed_any; |
c906108c | 5507 | |
f431efe5 PA |
5508 | /* First, build the bpstat chain with locations that explain a |
5509 | target stop, while being careful to not set the target running, | |
5510 | as that may invalidate locations (in particular watchpoint | |
5511 | locations are recreated). Resuming will happen here with | |
5512 | breakpoint conditions or watchpoint expressions that include | |
5513 | inferior function calls. */ | |
c5aa993b | 5514 | |
429374b8 JK |
5515 | ALL_BREAKPOINTS (b) |
5516 | { | |
1a853c52 | 5517 | if (!breakpoint_enabled (b)) |
429374b8 | 5518 | continue; |
a5606eee | 5519 | |
429374b8 JK |
5520 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5521 | { | |
4a64f543 MS |
5522 | /* For hardware watchpoints, we look only at the first |
5523 | location. The watchpoint_check function will work on the | |
5524 | entire expression, not the individual locations. For | |
5525 | read watchpoints, the watchpoints_triggered function has | |
5526 | checked all locations already. */ | |
429374b8 JK |
5527 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5528 | break; | |
18a18393 | 5529 | |
f6592439 | 5530 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5531 | continue; |
c5aa993b | 5532 | |
09ac7c10 | 5533 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5534 | continue; |
c5aa993b | 5535 | |
4a64f543 MS |
5536 | /* Come here if it's a watchpoint, or if the break address |
5537 | matches. */ | |
c5aa993b | 5538 | |
4a64f543 MS |
5539 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5540 | explain stop. */ | |
c5aa993b | 5541 | |
f431efe5 PA |
5542 | /* Assume we stop. Should we find a watchpoint that is not |
5543 | actually triggered, or if the condition of the breakpoint | |
5544 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5545 | bs->stop = 1; |
5546 | bs->print = 1; | |
d983da9c | 5547 | |
f431efe5 PA |
5548 | /* If this is a scope breakpoint, mark the associated |
5549 | watchpoint as triggered so that we will handle the | |
5550 | out-of-scope event. We'll get to the watchpoint next | |
5551 | iteration. */ | |
d0fb5eae | 5552 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5553 | { |
5554 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5555 | ||
5556 | w->watchpoint_triggered = watch_triggered_yes; | |
5557 | } | |
f431efe5 PA |
5558 | } |
5559 | } | |
5560 | ||
7c16b83e | 5561 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5562 | if (!target_supports_stopped_by_sw_breakpoint () |
5563 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5564 | { |
1cf4d951 | 5565 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5566 | { |
1cf4d951 PA |
5567 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5568 | && need_moribund_for_location_type (loc)) | |
5569 | { | |
5570 | bs = bpstat_alloc (loc, &bs_link); | |
5571 | /* For hits of moribund locations, we should just proceed. */ | |
5572 | bs->stop = 0; | |
5573 | bs->print = 0; | |
5574 | bs->print_it = print_it_noop; | |
5575 | } | |
f431efe5 PA |
5576 | } |
5577 | } | |
5578 | ||
edcc5120 TT |
5579 | /* A bit of special processing for shlib breakpoints. We need to |
5580 | process solib loading here, so that the lists of loaded and | |
5581 | unloaded libraries are correct before we handle "catch load" and | |
5582 | "catch unload". */ | |
5583 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5584 | { | |
5d268276 | 5585 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5586 | { |
5587 | handle_solib_event (); | |
5588 | break; | |
5589 | } | |
5590 | } | |
5591 | ||
f431efe5 PA |
5592 | /* Now go through the locations that caused the target to stop, and |
5593 | check whether we're interested in reporting this stop to higher | |
5594 | layers, or whether we should resume the target transparently. */ | |
5595 | ||
5596 | removed_any = 0; | |
5597 | ||
5760d0ab | 5598 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5599 | { |
5600 | if (!bs->stop) | |
5601 | continue; | |
5602 | ||
f431efe5 | 5603 | b = bs->breakpoint_at; |
348d480f PA |
5604 | b->ops->check_status (bs); |
5605 | if (bs->stop) | |
28010a5d | 5606 | { |
348d480f | 5607 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5608 | |
429374b8 JK |
5609 | if (bs->stop) |
5610 | { | |
5611 | ++(b->hit_count); | |
8d3788bd | 5612 | observer_notify_breakpoint_modified (b); |
c906108c | 5613 | |
4a64f543 | 5614 | /* We will stop here. */ |
429374b8 JK |
5615 | if (b->disposition == disp_disable) |
5616 | { | |
816338b5 | 5617 | --(b->enable_count); |
1a853c52 | 5618 | if (b->enable_count <= 0) |
429374b8 | 5619 | b->enable_state = bp_disabled; |
f431efe5 | 5620 | removed_any = 1; |
429374b8 JK |
5621 | } |
5622 | if (b->silent) | |
5623 | bs->print = 0; | |
5624 | bs->commands = b->commands; | |
9add0f1b | 5625 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5626 | if (command_line_is_silent (bs->commands |
5627 | ? bs->commands->commands : NULL)) | |
5628 | bs->print = 0; | |
9d6e6e84 HZ |
5629 | |
5630 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5631 | } |
5632 | ||
348d480f | 5633 | } |
a9b3a50f PA |
5634 | |
5635 | /* Print nothing for this entry if we don't stop or don't | |
5636 | print. */ | |
5637 | if (!bs->stop || !bs->print) | |
5638 | bs->print_it = print_it_noop; | |
429374b8 | 5639 | } |
876fa593 | 5640 | |
d983da9c DJ |
5641 | /* If we aren't stopping, the value of some hardware watchpoint may |
5642 | not have changed, but the intermediate memory locations we are | |
5643 | watching may have. Don't bother if we're stopping; this will get | |
5644 | done later. */ | |
d832cb68 | 5645 | need_remove_insert = 0; |
5760d0ab JK |
5646 | if (! bpstat_causes_stop (bs_head)) |
5647 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5648 | if (!bs->stop |
f431efe5 PA |
5649 | && bs->breakpoint_at |
5650 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5651 | { |
3a5c3e22 PA |
5652 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5653 | ||
5654 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5655 | need_remove_insert = 1; |
d983da9c DJ |
5656 | } |
5657 | ||
d832cb68 | 5658 | if (need_remove_insert) |
44702360 | 5659 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5660 | else if (removed_any) |
44702360 | 5661 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5662 | |
5760d0ab | 5663 | return bs_head; |
c906108c | 5664 | } |
628fe4e4 JK |
5665 | |
5666 | static void | |
5667 | handle_jit_event (void) | |
5668 | { | |
5669 | struct frame_info *frame; | |
5670 | struct gdbarch *gdbarch; | |
5671 | ||
5672 | /* Switch terminal for any messages produced by | |
5673 | breakpoint_re_set. */ | |
5674 | target_terminal_ours_for_output (); | |
5675 | ||
5676 | frame = get_current_frame (); | |
5677 | gdbarch = get_frame_arch (frame); | |
5678 | ||
5679 | jit_event_handler (gdbarch); | |
5680 | ||
5681 | target_terminal_inferior (); | |
5682 | } | |
5683 | ||
5684 | /* Prepare WHAT final decision for infrun. */ | |
5685 | ||
5686 | /* Decide what infrun needs to do with this bpstat. */ | |
5687 | ||
c906108c | 5688 | struct bpstat_what |
0e30163f | 5689 | bpstat_what (bpstat bs_head) |
c906108c | 5690 | { |
c906108c | 5691 | struct bpstat_what retval; |
628fe4e4 | 5692 | int jit_event = 0; |
0e30163f | 5693 | bpstat bs; |
c906108c | 5694 | |
628fe4e4 | 5695 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5696 | retval.call_dummy = STOP_NONE; |
186c406b | 5697 | retval.is_longjmp = 0; |
628fe4e4 | 5698 | |
0e30163f | 5699 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5700 | { |
628fe4e4 JK |
5701 | /* Extract this BS's action. After processing each BS, we check |
5702 | if its action overrides all we've seem so far. */ | |
5703 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5704 | enum bptype bptype; | |
5705 | ||
c906108c | 5706 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5707 | { |
5708 | /* I suspect this can happen if it was a momentary | |
5709 | breakpoint which has since been deleted. */ | |
5710 | bptype = bp_none; | |
5711 | } | |
20874c92 | 5712 | else |
f431efe5 | 5713 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5714 | |
5715 | switch (bptype) | |
c906108c SS |
5716 | { |
5717 | case bp_none: | |
628fe4e4 | 5718 | break; |
c906108c SS |
5719 | case bp_breakpoint: |
5720 | case bp_hardware_breakpoint: | |
7c16b83e | 5721 | case bp_single_step: |
c906108c SS |
5722 | case bp_until: |
5723 | case bp_finish: | |
a9b3a50f | 5724 | case bp_shlib_event: |
c906108c SS |
5725 | if (bs->stop) |
5726 | { | |
5727 | if (bs->print) | |
628fe4e4 | 5728 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5729 | else |
628fe4e4 | 5730 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5731 | } |
5732 | else | |
628fe4e4 | 5733 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5734 | break; |
5735 | case bp_watchpoint: | |
5736 | case bp_hardware_watchpoint: | |
5737 | case bp_read_watchpoint: | |
5738 | case bp_access_watchpoint: | |
5739 | if (bs->stop) | |
5740 | { | |
5741 | if (bs->print) | |
628fe4e4 | 5742 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5743 | else |
628fe4e4 | 5744 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5745 | } |
5746 | else | |
628fe4e4 JK |
5747 | { |
5748 | /* There was a watchpoint, but we're not stopping. | |
5749 | This requires no further action. */ | |
5750 | } | |
c906108c SS |
5751 | break; |
5752 | case bp_longjmp: | |
e2e4d78b | 5753 | case bp_longjmp_call_dummy: |
186c406b | 5754 | case bp_exception: |
628fe4e4 | 5755 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5756 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5757 | break; |
5758 | case bp_longjmp_resume: | |
186c406b | 5759 | case bp_exception_resume: |
628fe4e4 | 5760 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5761 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5762 | break; |
5763 | case bp_step_resume: | |
5764 | if (bs->stop) | |
628fe4e4 JK |
5765 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5766 | else | |
c906108c | 5767 | { |
628fe4e4 JK |
5768 | /* It is for the wrong frame. */ |
5769 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5770 | } |
c906108c | 5771 | break; |
2c03e5be PA |
5772 | case bp_hp_step_resume: |
5773 | if (bs->stop) | |
5774 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5775 | else | |
5776 | { | |
5777 | /* It is for the wrong frame. */ | |
5778 | this_action = BPSTAT_WHAT_SINGLE; | |
5779 | } | |
5780 | break; | |
c906108c | 5781 | case bp_watchpoint_scope: |
c4093a6a | 5782 | case bp_thread_event: |
1900040c | 5783 | case bp_overlay_event: |
0fd8e87f | 5784 | case bp_longjmp_master: |
aa7d318d | 5785 | case bp_std_terminate_master: |
186c406b | 5786 | case bp_exception_master: |
628fe4e4 | 5787 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5788 | break; |
ce78b96d | 5789 | case bp_catchpoint: |
c5aa993b JM |
5790 | if (bs->stop) |
5791 | { | |
5792 | if (bs->print) | |
628fe4e4 | 5793 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5794 | else |
628fe4e4 | 5795 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5796 | } |
5797 | else | |
628fe4e4 JK |
5798 | { |
5799 | /* There was a catchpoint, but we're not stopping. | |
5800 | This requires no further action. */ | |
5801 | } | |
5802 | break; | |
628fe4e4 JK |
5803 | case bp_jit_event: |
5804 | jit_event = 1; | |
5805 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5806 | break; |
c906108c | 5807 | case bp_call_dummy: |
53a5351d JM |
5808 | /* Make sure the action is stop (silent or noisy), |
5809 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5810 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5811 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5812 | break; |
5813 | case bp_std_terminate: | |
5814 | /* Make sure the action is stop (silent or noisy), | |
5815 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5816 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5817 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5818 | break; |
1042e4c0 | 5819 | case bp_tracepoint: |
7a697b8d | 5820 | case bp_fast_tracepoint: |
0fb4aa4b | 5821 | case bp_static_tracepoint: |
1042e4c0 SS |
5822 | /* Tracepoint hits should not be reported back to GDB, and |
5823 | if one got through somehow, it should have been filtered | |
5824 | out already. */ | |
5825 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5826 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5827 | break; |
5828 | case bp_gnu_ifunc_resolver: | |
5829 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5830 | this_action = BPSTAT_WHAT_SINGLE; | |
5831 | break; | |
5832 | case bp_gnu_ifunc_resolver_return: | |
5833 | /* The breakpoint will be removed, execution will restart from the | |
5834 | PC of the former breakpoint. */ | |
5835 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5836 | break; | |
e7e0cddf SS |
5837 | |
5838 | case bp_dprintf: | |
a11cfd87 HZ |
5839 | if (bs->stop) |
5840 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5841 | else | |
5842 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5843 | break; |
5844 | ||
628fe4e4 JK |
5845 | default: |
5846 | internal_error (__FILE__, __LINE__, | |
5847 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5848 | } |
628fe4e4 JK |
5849 | |
5850 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5851 | } |
628fe4e4 | 5852 | |
0e30163f JK |
5853 | /* These operations may affect the bs->breakpoint_at state so they are |
5854 | delayed after MAIN_ACTION is decided above. */ | |
5855 | ||
628fe4e4 JK |
5856 | if (jit_event) |
5857 | { | |
5858 | if (debug_infrun) | |
5859 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5860 | ||
5861 | handle_jit_event (); | |
5862 | } | |
5863 | ||
0e30163f JK |
5864 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5865 | { | |
5866 | struct breakpoint *b = bs->breakpoint_at; | |
5867 | ||
5868 | if (b == NULL) | |
5869 | continue; | |
5870 | switch (b->type) | |
5871 | { | |
5872 | case bp_gnu_ifunc_resolver: | |
5873 | gnu_ifunc_resolver_stop (b); | |
5874 | break; | |
5875 | case bp_gnu_ifunc_resolver_return: | |
5876 | gnu_ifunc_resolver_return_stop (b); | |
5877 | break; | |
5878 | } | |
5879 | } | |
5880 | ||
c906108c SS |
5881 | return retval; |
5882 | } | |
5883 | ||
5884 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5885 | without hardware support). This isn't related to a specific bpstat, | |
5886 | just to things like whether watchpoints are set. */ | |
5887 | ||
c5aa993b | 5888 | int |
fba45db2 | 5889 | bpstat_should_step (void) |
c906108c SS |
5890 | { |
5891 | struct breakpoint *b; | |
cc59ec59 | 5892 | |
c906108c | 5893 | ALL_BREAKPOINTS (b) |
717a8278 | 5894 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5895 | return 1; |
c906108c SS |
5896 | return 0; |
5897 | } | |
5898 | ||
67822962 PA |
5899 | int |
5900 | bpstat_causes_stop (bpstat bs) | |
5901 | { | |
5902 | for (; bs != NULL; bs = bs->next) | |
5903 | if (bs->stop) | |
5904 | return 1; | |
5905 | ||
5906 | return 0; | |
5907 | } | |
5908 | ||
c906108c | 5909 | \f |
c5aa993b | 5910 | |
170b53b2 UW |
5911 | /* Compute a string of spaces suitable to indent the next line |
5912 | so it starts at the position corresponding to the table column | |
5913 | named COL_NAME in the currently active table of UIOUT. */ | |
5914 | ||
5915 | static char * | |
5916 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5917 | { | |
5918 | static char wrap_indent[80]; | |
5919 | int i, total_width, width, align; | |
5920 | char *text; | |
5921 | ||
5922 | total_width = 0; | |
5923 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5924 | { | |
5925 | if (strcmp (text, col_name) == 0) | |
5926 | { | |
5927 | gdb_assert (total_width < sizeof wrap_indent); | |
5928 | memset (wrap_indent, ' ', total_width); | |
5929 | wrap_indent[total_width] = 0; | |
5930 | ||
5931 | return wrap_indent; | |
5932 | } | |
5933 | ||
5934 | total_width += width + 1; | |
5935 | } | |
5936 | ||
5937 | return NULL; | |
5938 | } | |
5939 | ||
b775012e LM |
5940 | /* Determine if the locations of this breakpoint will have their conditions |
5941 | evaluated by the target, host or a mix of both. Returns the following: | |
5942 | ||
5943 | "host": Host evals condition. | |
5944 | "host or target": Host or Target evals condition. | |
5945 | "target": Target evals condition. | |
5946 | */ | |
5947 | ||
5948 | static const char * | |
5949 | bp_condition_evaluator (struct breakpoint *b) | |
5950 | { | |
5951 | struct bp_location *bl; | |
5952 | char host_evals = 0; | |
5953 | char target_evals = 0; | |
5954 | ||
5955 | if (!b) | |
5956 | return NULL; | |
5957 | ||
5958 | if (!is_breakpoint (b)) | |
5959 | return NULL; | |
5960 | ||
5961 | if (gdb_evaluates_breakpoint_condition_p () | |
5962 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5963 | return condition_evaluation_host; | |
5964 | ||
5965 | for (bl = b->loc; bl; bl = bl->next) | |
5966 | { | |
5967 | if (bl->cond_bytecode) | |
5968 | target_evals++; | |
5969 | else | |
5970 | host_evals++; | |
5971 | } | |
5972 | ||
5973 | if (host_evals && target_evals) | |
5974 | return condition_evaluation_both; | |
5975 | else if (target_evals) | |
5976 | return condition_evaluation_target; | |
5977 | else | |
5978 | return condition_evaluation_host; | |
5979 | } | |
5980 | ||
5981 | /* Determine the breakpoint location's condition evaluator. This is | |
5982 | similar to bp_condition_evaluator, but for locations. */ | |
5983 | ||
5984 | static const char * | |
5985 | bp_location_condition_evaluator (struct bp_location *bl) | |
5986 | { | |
5987 | if (bl && !is_breakpoint (bl->owner)) | |
5988 | return NULL; | |
5989 | ||
5990 | if (gdb_evaluates_breakpoint_condition_p () | |
5991 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5992 | return condition_evaluation_host; | |
5993 | ||
5994 | if (bl && bl->cond_bytecode) | |
5995 | return condition_evaluation_target; | |
5996 | else | |
5997 | return condition_evaluation_host; | |
5998 | } | |
5999 | ||
859825b8 JK |
6000 | /* Print the LOC location out of the list of B->LOC locations. */ |
6001 | ||
170b53b2 UW |
6002 | static void |
6003 | print_breakpoint_location (struct breakpoint *b, | |
6004 | struct bp_location *loc) | |
0d381245 | 6005 | { |
79a45e25 | 6006 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
6007 | struct cleanup *old_chain = save_current_program_space (); |
6008 | ||
859825b8 JK |
6009 | if (loc != NULL && loc->shlib_disabled) |
6010 | loc = NULL; | |
6011 | ||
6c95b8df PA |
6012 | if (loc != NULL) |
6013 | set_current_program_space (loc->pspace); | |
6014 | ||
56435ebe TT |
6015 | if (b->display_canonical) |
6016 | ui_out_field_string (uiout, "what", b->addr_string); | |
2f202fde | 6017 | else if (loc && loc->symtab) |
0d381245 VP |
6018 | { |
6019 | struct symbol *sym | |
6020 | = find_pc_sect_function (loc->address, loc->section); | |
6021 | if (sym) | |
6022 | { | |
6023 | ui_out_text (uiout, "in "); | |
6024 | ui_out_field_string (uiout, "func", | |
6025 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
6026 | ui_out_text (uiout, " "); |
6027 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
6028 | ui_out_text (uiout, "at "); | |
0d381245 | 6029 | } |
05cba821 JK |
6030 | ui_out_field_string (uiout, "file", |
6031 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 6032 | ui_out_text (uiout, ":"); |
05cba821 | 6033 | |
0d381245 | 6034 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
6035 | ui_out_field_string (uiout, "fullname", |
6036 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 6037 | |
f8eba3c6 | 6038 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 6039 | } |
859825b8 | 6040 | else if (loc) |
0d381245 | 6041 | { |
f99d8bf4 PA |
6042 | struct ui_file *stb = mem_fileopen (); |
6043 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 6044 | |
f99d8bf4 | 6045 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 6046 | demangle, ""); |
0d381245 | 6047 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
6048 | |
6049 | do_cleanups (stb_chain); | |
0d381245 | 6050 | } |
859825b8 JK |
6051 | else |
6052 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 6053 | |
b775012e LM |
6054 | if (loc && is_breakpoint (b) |
6055 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6056 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6057 | { | |
6058 | ui_out_text (uiout, " ("); | |
6059 | ui_out_field_string (uiout, "evaluated-by", | |
6060 | bp_location_condition_evaluator (loc)); | |
6061 | ui_out_text (uiout, ")"); | |
6062 | } | |
6063 | ||
6c95b8df | 6064 | do_cleanups (old_chain); |
0d381245 VP |
6065 | } |
6066 | ||
269b11a2 PA |
6067 | static const char * |
6068 | bptype_string (enum bptype type) | |
c906108c | 6069 | { |
c4093a6a JM |
6070 | struct ep_type_description |
6071 | { | |
6072 | enum bptype type; | |
6073 | char *description; | |
6074 | }; | |
6075 | static struct ep_type_description bptypes[] = | |
c906108c | 6076 | { |
c5aa993b JM |
6077 | {bp_none, "?deleted?"}, |
6078 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6079 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6080 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6081 | {bp_until, "until"}, |
6082 | {bp_finish, "finish"}, | |
6083 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6084 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6085 | {bp_read_watchpoint, "read watchpoint"}, |
6086 | {bp_access_watchpoint, "acc watchpoint"}, | |
6087 | {bp_longjmp, "longjmp"}, | |
6088 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6089 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6090 | {bp_exception, "exception"}, |
6091 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6092 | {bp_step_resume, "step resume"}, |
2c03e5be | 6093 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6094 | {bp_watchpoint_scope, "watchpoint scope"}, |
6095 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6096 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6097 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6098 | {bp_thread_event, "thread events"}, |
1900040c | 6099 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6100 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6101 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6102 | {bp_exception_master, "exception master"}, |
ce78b96d | 6103 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6104 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6105 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6106 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6107 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6108 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6109 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6110 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6111 | }; |
269b11a2 PA |
6112 | |
6113 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6114 | || ((int) type != bptypes[(int) type].type)) | |
6115 | internal_error (__FILE__, __LINE__, | |
6116 | _("bptypes table does not describe type #%d."), | |
6117 | (int) type); | |
6118 | ||
6119 | return bptypes[(int) type].description; | |
6120 | } | |
6121 | ||
998580f1 MK |
6122 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6123 | For CLI, prefix the list with the string 'inf'. */ | |
6124 | ||
6125 | static void | |
6126 | output_thread_groups (struct ui_out *uiout, | |
6127 | const char *field_name, | |
6128 | VEC(int) *inf_num, | |
6129 | int mi_only) | |
6130 | { | |
752eb8b4 | 6131 | struct cleanup *back_to; |
998580f1 MK |
6132 | int is_mi = ui_out_is_mi_like_p (uiout); |
6133 | int inf; | |
6134 | int i; | |
6135 | ||
6136 | /* For backward compatibility, don't display inferiors in CLI unless | |
6137 | there are several. Always display them for MI. */ | |
6138 | if (!is_mi && mi_only) | |
6139 | return; | |
6140 | ||
752eb8b4 TT |
6141 | back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); |
6142 | ||
998580f1 MK |
6143 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6144 | { | |
6145 | if (is_mi) | |
6146 | { | |
6147 | char mi_group[10]; | |
6148 | ||
6149 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
6150 | ui_out_field_string (uiout, NULL, mi_group); | |
6151 | } | |
6152 | else | |
6153 | { | |
6154 | if (i == 0) | |
6155 | ui_out_text (uiout, " inf "); | |
6156 | else | |
6157 | ui_out_text (uiout, ", "); | |
6158 | ||
6159 | ui_out_text (uiout, plongest (inf)); | |
6160 | } | |
6161 | } | |
6162 | ||
6163 | do_cleanups (back_to); | |
6164 | } | |
6165 | ||
269b11a2 PA |
6166 | /* Print B to gdb_stdout. */ |
6167 | ||
6168 | static void | |
6169 | print_one_breakpoint_location (struct breakpoint *b, | |
6170 | struct bp_location *loc, | |
6171 | int loc_number, | |
6172 | struct bp_location **last_loc, | |
269b11a2 PA |
6173 | int allflag) |
6174 | { | |
6175 | struct command_line *l; | |
c2c6d25f | 6176 | static char bpenables[] = "nynny"; |
c906108c | 6177 | |
79a45e25 | 6178 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6179 | int header_of_multiple = 0; |
6180 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6181 | struct value_print_options opts; |
6182 | ||
6183 | get_user_print_options (&opts); | |
0d381245 VP |
6184 | |
6185 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6186 | /* See comment in print_one_breakpoint concerning treatment of |
6187 | breakpoints with single disabled location. */ | |
0d381245 VP |
6188 | if (loc == NULL |
6189 | && (b->loc != NULL | |
6190 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6191 | header_of_multiple = 1; | |
6192 | if (loc == NULL) | |
6193 | loc = b->loc; | |
6194 | ||
c4093a6a JM |
6195 | annotate_record (); |
6196 | ||
6197 | /* 1 */ | |
6198 | annotate_field (0); | |
0d381245 VP |
6199 | if (part_of_multiple) |
6200 | { | |
6201 | char *formatted; | |
0c6773c1 | 6202 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
6203 | ui_out_field_string (uiout, "number", formatted); |
6204 | xfree (formatted); | |
6205 | } | |
6206 | else | |
6207 | { | |
6208 | ui_out_field_int (uiout, "number", b->number); | |
6209 | } | |
c4093a6a JM |
6210 | |
6211 | /* 2 */ | |
6212 | annotate_field (1); | |
0d381245 VP |
6213 | if (part_of_multiple) |
6214 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
6215 | else |
6216 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
6217 | |
6218 | /* 3 */ | |
6219 | annotate_field (2); | |
0d381245 VP |
6220 | if (part_of_multiple) |
6221 | ui_out_field_skip (uiout, "disp"); | |
6222 | else | |
2cec12e5 | 6223 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 6224 | |
c4093a6a JM |
6225 | |
6226 | /* 4 */ | |
6227 | annotate_field (3); | |
0d381245 | 6228 | if (part_of_multiple) |
54e52265 | 6229 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6230 | else |
4a64f543 MS |
6231 | ui_out_field_fmt (uiout, "enabled", "%c", |
6232 | bpenables[(int) b->enable_state]); | |
54e52265 | 6233 | ui_out_spaces (uiout, 2); |
0d381245 | 6234 | |
c4093a6a JM |
6235 | |
6236 | /* 5 and 6 */ | |
3086aeae | 6237 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6238 | { |
4a64f543 MS |
6239 | /* Although the print_one can possibly print all locations, |
6240 | calling it here is not likely to get any nice result. So, | |
6241 | make sure there's just one location. */ | |
0d381245 | 6242 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6243 | b->ops->print_one (b, last_loc); |
0d381245 | 6244 | } |
3086aeae DJ |
6245 | else |
6246 | switch (b->type) | |
6247 | { | |
6248 | case bp_none: | |
6249 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6250 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6251 | break; |
c906108c | 6252 | |
3086aeae DJ |
6253 | case bp_watchpoint: |
6254 | case bp_hardware_watchpoint: | |
6255 | case bp_read_watchpoint: | |
6256 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6257 | { |
6258 | struct watchpoint *w = (struct watchpoint *) b; | |
6259 | ||
6260 | /* Field 4, the address, is omitted (which makes the columns | |
6261 | not line up too nicely with the headers, but the effect | |
6262 | is relatively readable). */ | |
6263 | if (opts.addressprint) | |
6264 | ui_out_field_skip (uiout, "addr"); | |
6265 | annotate_field (5); | |
6266 | ui_out_field_string (uiout, "what", w->exp_string); | |
6267 | } | |
3086aeae DJ |
6268 | break; |
6269 | ||
3086aeae DJ |
6270 | case bp_breakpoint: |
6271 | case bp_hardware_breakpoint: | |
7c16b83e | 6272 | case bp_single_step: |
3086aeae DJ |
6273 | case bp_until: |
6274 | case bp_finish: | |
6275 | case bp_longjmp: | |
6276 | case bp_longjmp_resume: | |
e2e4d78b | 6277 | case bp_longjmp_call_dummy: |
186c406b TT |
6278 | case bp_exception: |
6279 | case bp_exception_resume: | |
3086aeae | 6280 | case bp_step_resume: |
2c03e5be | 6281 | case bp_hp_step_resume: |
3086aeae DJ |
6282 | case bp_watchpoint_scope: |
6283 | case bp_call_dummy: | |
aa7d318d | 6284 | case bp_std_terminate: |
3086aeae DJ |
6285 | case bp_shlib_event: |
6286 | case bp_thread_event: | |
6287 | case bp_overlay_event: | |
0fd8e87f | 6288 | case bp_longjmp_master: |
aa7d318d | 6289 | case bp_std_terminate_master: |
186c406b | 6290 | case bp_exception_master: |
1042e4c0 | 6291 | case bp_tracepoint: |
7a697b8d | 6292 | case bp_fast_tracepoint: |
0fb4aa4b | 6293 | case bp_static_tracepoint: |
e7e0cddf | 6294 | case bp_dprintf: |
4efc6507 | 6295 | case bp_jit_event: |
0e30163f JK |
6296 | case bp_gnu_ifunc_resolver: |
6297 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6298 | if (opts.addressprint) |
3086aeae DJ |
6299 | { |
6300 | annotate_field (4); | |
54e52265 | 6301 | if (header_of_multiple) |
0d381245 | 6302 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 6303 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 6304 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 6305 | else |
5af949e3 UW |
6306 | ui_out_field_core_addr (uiout, "addr", |
6307 | loc->gdbarch, loc->address); | |
3086aeae DJ |
6308 | } |
6309 | annotate_field (5); | |
0d381245 | 6310 | if (!header_of_multiple) |
170b53b2 | 6311 | print_breakpoint_location (b, loc); |
0d381245 | 6312 | if (b->loc) |
a6d9a66e | 6313 | *last_loc = b->loc; |
3086aeae DJ |
6314 | break; |
6315 | } | |
c906108c | 6316 | |
6c95b8df | 6317 | |
998580f1 | 6318 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6319 | { |
6320 | struct inferior *inf; | |
998580f1 MK |
6321 | VEC(int) *inf_num = NULL; |
6322 | int mi_only = 1; | |
6c95b8df | 6323 | |
998580f1 | 6324 | ALL_INFERIORS (inf) |
6c95b8df PA |
6325 | { |
6326 | if (inf->pspace == loc->pspace) | |
998580f1 | 6327 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6328 | } |
998580f1 MK |
6329 | |
6330 | /* For backward compatibility, don't display inferiors in CLI unless | |
6331 | there are several. Always display for MI. */ | |
6332 | if (allflag | |
6333 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6334 | && (number_of_program_spaces () > 1 | |
6335 | || number_of_inferiors () > 1) | |
6336 | /* LOC is for existing B, it cannot be in | |
6337 | moribund_locations and thus having NULL OWNER. */ | |
6338 | && loc->owner->type != bp_catchpoint)) | |
6339 | mi_only = 0; | |
6340 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6341 | VEC_free (int, inf_num); | |
6c95b8df PA |
6342 | } |
6343 | ||
4a306c9a | 6344 | if (!part_of_multiple) |
c4093a6a | 6345 | { |
4a306c9a JB |
6346 | if (b->thread != -1) |
6347 | { | |
6348 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6349 | "stop only in" line a little further down. */ |
4a306c9a JB |
6350 | ui_out_text (uiout, " thread "); |
6351 | ui_out_field_int (uiout, "thread", b->thread); | |
6352 | } | |
6353 | else if (b->task != 0) | |
6354 | { | |
6355 | ui_out_text (uiout, " task "); | |
6356 | ui_out_field_int (uiout, "task", b->task); | |
6357 | } | |
c4093a6a | 6358 | } |
f1310107 | 6359 | |
8b93c638 | 6360 | ui_out_text (uiout, "\n"); |
f1310107 | 6361 | |
348d480f | 6362 | if (!part_of_multiple) |
f1310107 TJB |
6363 | b->ops->print_one_detail (b, uiout); |
6364 | ||
0d381245 | 6365 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6366 | { |
6367 | annotate_field (6); | |
8b93c638 | 6368 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6369 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6370 | the frame ID. */ |
5af949e3 UW |
6371 | ui_out_field_core_addr (uiout, "frame", |
6372 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6373 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6374 | } |
6375 | ||
28010a5d | 6376 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6377 | { |
6378 | annotate_field (7); | |
d77f58be | 6379 | if (is_tracepoint (b)) |
1042e4c0 SS |
6380 | ui_out_text (uiout, "\ttrace only if "); |
6381 | else | |
6382 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6383 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6384 | |
6385 | /* Print whether the target is doing the breakpoint's condition | |
6386 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6387 | if (is_breakpoint (b) | |
6388 | && breakpoint_condition_evaluation_mode () | |
6389 | == condition_evaluation_target) | |
6390 | { | |
6391 | ui_out_text (uiout, " ("); | |
6392 | ui_out_field_string (uiout, "evaluated-by", | |
6393 | bp_condition_evaluator (b)); | |
6394 | ui_out_text (uiout, " evals)"); | |
6395 | } | |
0101ce28 JJ |
6396 | ui_out_text (uiout, "\n"); |
6397 | } | |
6398 | ||
0d381245 | 6399 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6400 | { |
4a64f543 | 6401 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6402 | ui_out_text (uiout, "\tstop only in thread "); |
6403 | ui_out_field_int (uiout, "thread", b->thread); | |
6404 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6405 | } |
6406 | ||
556ec64d YQ |
6407 | if (!part_of_multiple) |
6408 | { | |
6409 | if (b->hit_count) | |
31f56a27 YQ |
6410 | { |
6411 | /* FIXME should make an annotation for this. */ | |
6412 | if (is_catchpoint (b)) | |
6413 | ui_out_text (uiout, "\tcatchpoint"); | |
6414 | else if (is_tracepoint (b)) | |
6415 | ui_out_text (uiout, "\ttracepoint"); | |
6416 | else | |
6417 | ui_out_text (uiout, "\tbreakpoint"); | |
6418 | ui_out_text (uiout, " already hit "); | |
6419 | ui_out_field_int (uiout, "times", b->hit_count); | |
6420 | if (b->hit_count == 1) | |
6421 | ui_out_text (uiout, " time\n"); | |
6422 | else | |
6423 | ui_out_text (uiout, " times\n"); | |
6424 | } | |
556ec64d YQ |
6425 | else |
6426 | { | |
31f56a27 YQ |
6427 | /* Output the count also if it is zero, but only if this is mi. */ |
6428 | if (ui_out_is_mi_like_p (uiout)) | |
6429 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6430 | } |
6431 | } | |
8b93c638 | 6432 | |
0d381245 | 6433 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6434 | { |
6435 | annotate_field (8); | |
8b93c638 JM |
6436 | ui_out_text (uiout, "\tignore next "); |
6437 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6438 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6439 | } |
059fb39f | 6440 | |
816338b5 SS |
6441 | /* Note that an enable count of 1 corresponds to "enable once" |
6442 | behavior, which is reported by the combination of enablement and | |
6443 | disposition, so we don't need to mention it here. */ | |
6444 | if (!part_of_multiple && b->enable_count > 1) | |
6445 | { | |
6446 | annotate_field (8); | |
6447 | ui_out_text (uiout, "\tdisable after "); | |
6448 | /* Tweak the wording to clarify that ignore and enable counts | |
6449 | are distinct, and have additive effect. */ | |
6450 | if (b->ignore_count) | |
6451 | ui_out_text (uiout, "additional "); | |
6452 | else | |
6453 | ui_out_text (uiout, "next "); | |
6454 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6455 | ui_out_text (uiout, " hits\n"); | |
6456 | } | |
6457 | ||
f196051f SS |
6458 | if (!part_of_multiple && is_tracepoint (b)) |
6459 | { | |
6460 | struct tracepoint *tp = (struct tracepoint *) b; | |
6461 | ||
6462 | if (tp->traceframe_usage) | |
6463 | { | |
6464 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6465 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6466 | ui_out_text (uiout, " bytes\n"); | |
6467 | } | |
6468 | } | |
d3ce09f5 | 6469 | |
9add0f1b | 6470 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6471 | if (!part_of_multiple && l) |
c4093a6a | 6472 | { |
3b31d625 EZ |
6473 | struct cleanup *script_chain; |
6474 | ||
c4093a6a | 6475 | annotate_field (9); |
3b31d625 | 6476 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6477 | print_command_lines (uiout, l, 4); |
3b31d625 | 6478 | do_cleanups (script_chain); |
c4093a6a | 6479 | } |
d24317b4 | 6480 | |
d9b3f62e | 6481 | if (is_tracepoint (b)) |
1042e4c0 | 6482 | { |
d9b3f62e PA |
6483 | struct tracepoint *t = (struct tracepoint *) b; |
6484 | ||
6485 | if (!part_of_multiple && t->pass_count) | |
6486 | { | |
6487 | annotate_field (10); | |
6488 | ui_out_text (uiout, "\tpass count "); | |
6489 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6490 | ui_out_text (uiout, " \n"); | |
6491 | } | |
f2a8bc8a YQ |
6492 | |
6493 | /* Don't display it when tracepoint or tracepoint location is | |
6494 | pending. */ | |
6495 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6496 | { | |
6497 | annotate_field (11); | |
6498 | ||
6499 | if (ui_out_is_mi_like_p (uiout)) | |
6500 | ui_out_field_string (uiout, "installed", | |
6501 | loc->inserted ? "y" : "n"); | |
6502 | else | |
6503 | { | |
6504 | if (loc->inserted) | |
6505 | ui_out_text (uiout, "\t"); | |
6506 | else | |
6507 | ui_out_text (uiout, "\tnot "); | |
6508 | ui_out_text (uiout, "installed on target\n"); | |
6509 | } | |
6510 | } | |
1042e4c0 SS |
6511 | } |
6512 | ||
d24317b4 VP |
6513 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6514 | { | |
3a5c3e22 PA |
6515 | if (is_watchpoint (b)) |
6516 | { | |
6517 | struct watchpoint *w = (struct watchpoint *) b; | |
6518 | ||
6519 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6520 | } | |
6521 | else if (b->addr_string) | |
d24317b4 | 6522 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6523 | } |
c4093a6a | 6524 | } |
c5aa993b | 6525 | |
0d381245 VP |
6526 | static void |
6527 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6528 | struct bp_location **last_loc, |
6c95b8df | 6529 | int allflag) |
0d381245 | 6530 | { |
8d3788bd | 6531 | struct cleanup *bkpt_chain; |
79a45e25 | 6532 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6533 | |
6534 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6535 | ||
12c5a436 | 6536 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6537 | do_cleanups (bkpt_chain); |
0d381245 VP |
6538 | |
6539 | /* If this breakpoint has custom print function, | |
6540 | it's already printed. Otherwise, print individual | |
6541 | locations, if any. */ | |
6542 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6543 | { | |
4a64f543 MS |
6544 | /* If breakpoint has a single location that is disabled, we |
6545 | print it as if it had several locations, since otherwise it's | |
6546 | hard to represent "breakpoint enabled, location disabled" | |
6547 | situation. | |
6548 | ||
6549 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6550 | internally, that's not a property exposed to user. */ |
0d381245 | 6551 | if (b->loc |
a5606eee | 6552 | && !is_hardware_watchpoint (b) |
8d3788bd | 6553 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6554 | { |
6555 | struct bp_location *loc; | |
6556 | int n = 1; | |
8d3788bd | 6557 | |
0d381245 | 6558 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6559 | { |
6560 | struct cleanup *inner2 = | |
6561 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6562 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6563 | do_cleanups (inner2); | |
6564 | } | |
0d381245 VP |
6565 | } |
6566 | } | |
6567 | } | |
6568 | ||
a6d9a66e UW |
6569 | static int |
6570 | breakpoint_address_bits (struct breakpoint *b) | |
6571 | { | |
6572 | int print_address_bits = 0; | |
6573 | struct bp_location *loc; | |
6574 | ||
6575 | for (loc = b->loc; loc; loc = loc->next) | |
6576 | { | |
c7437ca6 PA |
6577 | int addr_bit; |
6578 | ||
6579 | /* Software watchpoints that aren't watching memory don't have | |
6580 | an address to print. */ | |
6581 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6582 | continue; | |
6583 | ||
6584 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6585 | if (addr_bit > print_address_bits) |
6586 | print_address_bits = addr_bit; | |
6587 | } | |
6588 | ||
6589 | return print_address_bits; | |
6590 | } | |
0d381245 | 6591 | |
c4093a6a JM |
6592 | struct captured_breakpoint_query_args |
6593 | { | |
6594 | int bnum; | |
6595 | }; | |
c5aa993b | 6596 | |
c4093a6a | 6597 | static int |
2b65245e | 6598 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6599 | { |
6600 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6601 | struct breakpoint *b; |
a6d9a66e | 6602 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6603 | |
c4093a6a JM |
6604 | ALL_BREAKPOINTS (b) |
6605 | { | |
6606 | if (args->bnum == b->number) | |
c5aa993b | 6607 | { |
12c5a436 | 6608 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6609 | return GDB_RC_OK; |
c5aa993b | 6610 | } |
c4093a6a JM |
6611 | } |
6612 | return GDB_RC_NONE; | |
6613 | } | |
c5aa993b | 6614 | |
c4093a6a | 6615 | enum gdb_rc |
4a64f543 MS |
6616 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6617 | char **error_message) | |
c4093a6a JM |
6618 | { |
6619 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6620 | |
c4093a6a JM |
6621 | args.bnum = bnum; |
6622 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6623 | an error. */ |
b0b13bb4 DJ |
6624 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6625 | error_message, RETURN_MASK_ALL) < 0) | |
6626 | return GDB_RC_FAIL; | |
6627 | else | |
6628 | return GDB_RC_OK; | |
c4093a6a | 6629 | } |
c5aa993b | 6630 | |
09d682a4 TT |
6631 | /* Return true if this breakpoint was set by the user, false if it is |
6632 | internal or momentary. */ | |
6633 | ||
6634 | int | |
6635 | user_breakpoint_p (struct breakpoint *b) | |
6636 | { | |
46c6471b | 6637 | return b->number > 0; |
09d682a4 TT |
6638 | } |
6639 | ||
7f3b0473 | 6640 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6641 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6642 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6643 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6644 | ones for which it returns non-zero. Return the total number of | |
6645 | breakpoints listed. */ | |
c906108c | 6646 | |
d77f58be | 6647 | static int |
e5a67952 | 6648 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6649 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6650 | { |
52f0bd74 | 6651 | struct breakpoint *b; |
a6d9a66e | 6652 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6653 | int nr_printable_breakpoints; |
3b31d625 | 6654 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6655 | struct value_print_options opts; |
a6d9a66e | 6656 | int print_address_bits = 0; |
269b11a2 | 6657 | int print_type_col_width = 14; |
79a45e25 | 6658 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6659 | |
79a45b7d TT |
6660 | get_user_print_options (&opts); |
6661 | ||
4a64f543 MS |
6662 | /* Compute the number of rows in the table, as well as the size |
6663 | required for address fields. */ | |
7f3b0473 AC |
6664 | nr_printable_breakpoints = 0; |
6665 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6666 | { |
6667 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6668 | if (filter && !filter (b)) | |
6669 | continue; | |
6670 | ||
6671 | /* If we have an "args" string, it is a list of breakpoints to | |
6672 | accept. Skip the others. */ | |
6673 | if (args != NULL && *args != '\0') | |
6674 | { | |
6675 | if (allflag && parse_and_eval_long (args) != b->number) | |
6676 | continue; | |
6677 | if (!allflag && !number_is_in_list (args, b->number)) | |
6678 | continue; | |
6679 | } | |
269b11a2 | 6680 | |
e5a67952 MS |
6681 | if (allflag || user_breakpoint_p (b)) |
6682 | { | |
6683 | int addr_bit, type_len; | |
a6d9a66e | 6684 | |
e5a67952 MS |
6685 | addr_bit = breakpoint_address_bits (b); |
6686 | if (addr_bit > print_address_bits) | |
6687 | print_address_bits = addr_bit; | |
269b11a2 | 6688 | |
e5a67952 MS |
6689 | type_len = strlen (bptype_string (b->type)); |
6690 | if (type_len > print_type_col_width) | |
6691 | print_type_col_width = type_len; | |
6692 | ||
6693 | nr_printable_breakpoints++; | |
6694 | } | |
6695 | } | |
7f3b0473 | 6696 | |
79a45b7d | 6697 | if (opts.addressprint) |
3b31d625 | 6698 | bkpttbl_chain |
3e43a32a MS |
6699 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6700 | nr_printable_breakpoints, | |
3b31d625 | 6701 | "BreakpointTable"); |
8b93c638 | 6702 | else |
3b31d625 | 6703 | bkpttbl_chain |
3e43a32a MS |
6704 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6705 | nr_printable_breakpoints, | |
3b31d625 | 6706 | "BreakpointTable"); |
8b93c638 | 6707 | |
7f3b0473 | 6708 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6709 | annotate_breakpoints_headers (); |
6710 | if (nr_printable_breakpoints > 0) | |
6711 | annotate_field (0); | |
4a64f543 | 6712 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6713 | if (nr_printable_breakpoints > 0) |
6714 | annotate_field (1); | |
269b11a2 | 6715 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6716 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6717 | if (nr_printable_breakpoints > 0) |
6718 | annotate_field (2); | |
4a64f543 | 6719 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6720 | if (nr_printable_breakpoints > 0) |
6721 | annotate_field (3); | |
54e52265 | 6722 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6723 | if (opts.addressprint) |
e5a67952 MS |
6724 | { |
6725 | if (nr_printable_breakpoints > 0) | |
6726 | annotate_field (4); | |
6727 | if (print_address_bits <= 32) | |
6728 | ui_out_table_header (uiout, 10, ui_left, | |
6729 | "addr", "Address"); /* 5 */ | |
6730 | else | |
6731 | ui_out_table_header (uiout, 18, ui_left, | |
6732 | "addr", "Address"); /* 5 */ | |
6733 | } | |
d7faa9e7 AC |
6734 | if (nr_printable_breakpoints > 0) |
6735 | annotate_field (5); | |
6736 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6737 | ui_out_table_body (uiout); | |
6738 | if (nr_printable_breakpoints > 0) | |
6739 | annotate_breakpoints_table (); | |
7f3b0473 | 6740 | |
c4093a6a | 6741 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6742 | { |
6743 | QUIT; | |
6744 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6745 | if (filter && !filter (b)) | |
6746 | continue; | |
6747 | ||
6748 | /* If we have an "args" string, it is a list of breakpoints to | |
6749 | accept. Skip the others. */ | |
6750 | ||
6751 | if (args != NULL && *args != '\0') | |
6752 | { | |
6753 | if (allflag) /* maintenance info breakpoint */ | |
6754 | { | |
6755 | if (parse_and_eval_long (args) != b->number) | |
6756 | continue; | |
6757 | } | |
6758 | else /* all others */ | |
6759 | { | |
6760 | if (!number_is_in_list (args, b->number)) | |
6761 | continue; | |
6762 | } | |
6763 | } | |
6764 | /* We only print out user settable breakpoints unless the | |
6765 | allflag is set. */ | |
6766 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6767 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6768 | } |
6769 | ||
3b31d625 | 6770 | do_cleanups (bkpttbl_chain); |
698384cd | 6771 | |
7f3b0473 | 6772 | if (nr_printable_breakpoints == 0) |
c906108c | 6773 | { |
4a64f543 MS |
6774 | /* If there's a filter, let the caller decide how to report |
6775 | empty list. */ | |
d77f58be SS |
6776 | if (!filter) |
6777 | { | |
e5a67952 | 6778 | if (args == NULL || *args == '\0') |
d77f58be SS |
6779 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6780 | else | |
4a64f543 | 6781 | ui_out_message (uiout, 0, |
e5a67952 MS |
6782 | "No breakpoint or watchpoint matching '%s'.\n", |
6783 | args); | |
d77f58be | 6784 | } |
c906108c SS |
6785 | } |
6786 | else | |
c4093a6a | 6787 | { |
a6d9a66e UW |
6788 | if (last_loc && !server_command) |
6789 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6790 | } |
c906108c | 6791 | |
4a64f543 | 6792 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6793 | there have been breakpoints? */ |
c906108c | 6794 | annotate_breakpoints_table_end (); |
d77f58be SS |
6795 | |
6796 | return nr_printable_breakpoints; | |
c906108c SS |
6797 | } |
6798 | ||
ad443146 SS |
6799 | /* Display the value of default-collect in a way that is generally |
6800 | compatible with the breakpoint list. */ | |
6801 | ||
6802 | static void | |
6803 | default_collect_info (void) | |
6804 | { | |
79a45e25 PA |
6805 | struct ui_out *uiout = current_uiout; |
6806 | ||
ad443146 SS |
6807 | /* If it has no value (which is frequently the case), say nothing; a |
6808 | message like "No default-collect." gets in user's face when it's | |
6809 | not wanted. */ | |
6810 | if (!*default_collect) | |
6811 | return; | |
6812 | ||
6813 | /* The following phrase lines up nicely with per-tracepoint collect | |
6814 | actions. */ | |
6815 | ui_out_text (uiout, "default collect "); | |
6816 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6817 | ui_out_text (uiout, " \n"); | |
6818 | } | |
6819 | ||
c906108c | 6820 | static void |
e5a67952 | 6821 | breakpoints_info (char *args, int from_tty) |
c906108c | 6822 | { |
e5a67952 | 6823 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6824 | |
6825 | default_collect_info (); | |
d77f58be SS |
6826 | } |
6827 | ||
6828 | static void | |
e5a67952 | 6829 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6830 | { |
e5a67952 | 6831 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6832 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6833 | |
6834 | if (num_printed == 0) | |
6835 | { | |
e5a67952 | 6836 | if (args == NULL || *args == '\0') |
d77f58be SS |
6837 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6838 | else | |
e5a67952 | 6839 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6840 | } |
c906108c SS |
6841 | } |
6842 | ||
7a292a7a | 6843 | static void |
e5a67952 | 6844 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6845 | { |
e5a67952 | 6846 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6847 | |
6848 | default_collect_info (); | |
c906108c SS |
6849 | } |
6850 | ||
0d381245 | 6851 | static int |
714835d5 | 6852 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6853 | struct program_space *pspace, |
714835d5 | 6854 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6855 | { |
6856 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6857 | |
0d381245 VP |
6858 | for (; bl; bl = bl->next) |
6859 | { | |
6c95b8df PA |
6860 | if (bl->pspace == pspace |
6861 | && bl->address == pc | |
0d381245 VP |
6862 | && (!overlay_debugging || bl->section == section)) |
6863 | return 1; | |
6864 | } | |
6865 | return 0; | |
6866 | } | |
6867 | ||
672f9b60 | 6868 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6869 | concerns with logical breakpoints, so we match program spaces, not |
6870 | address spaces. */ | |
c906108c SS |
6871 | |
6872 | static void | |
6c95b8df PA |
6873 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6874 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6875 | struct obj_section *section, int thread) |
c906108c | 6876 | { |
52f0bd74 AC |
6877 | int others = 0; |
6878 | struct breakpoint *b; | |
c906108c SS |
6879 | |
6880 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6881 | others += (user_breakpoint_p (b) |
6882 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6883 | if (others > 0) |
6884 | { | |
a3f17187 AC |
6885 | if (others == 1) |
6886 | printf_filtered (_("Note: breakpoint ")); | |
6887 | else /* if (others == ???) */ | |
6888 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6889 | ALL_BREAKPOINTS (b) |
672f9b60 | 6890 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6891 | { |
6892 | others--; | |
6893 | printf_filtered ("%d", b->number); | |
6894 | if (b->thread == -1 && thread != -1) | |
6895 | printf_filtered (" (all threads)"); | |
6896 | else if (b->thread != -1) | |
6897 | printf_filtered (" (thread %d)", b->thread); | |
6898 | printf_filtered ("%s%s ", | |
059fb39f | 6899 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6900 | || b->enable_state == bp_call_disabled) |
0d381245 | 6901 | ? " (disabled)" |
0d381245 VP |
6902 | : ""), |
6903 | (others > 1) ? "," | |
6904 | : ((others == 1) ? " and" : "")); | |
6905 | } | |
a3f17187 | 6906 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6907 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6908 | printf_filtered (".\n"); |
6909 | } | |
6910 | } | |
6911 | \f | |
c906108c | 6912 | |
e4f237da KB |
6913 | /* Return true iff it is meaningful to use the address member of |
6914 | BPT. For some breakpoint types, the address member is irrelevant | |
6915 | and it makes no sense to attempt to compare it to other addresses | |
6916 | (or use it for any other purpose either). | |
6917 | ||
4a64f543 MS |
6918 | More specifically, each of the following breakpoint types will |
6919 | always have a zero valued address and we don't want to mark | |
6920 | breakpoints of any of these types to be a duplicate of an actual | |
6921 | breakpoint at address zero: | |
e4f237da KB |
6922 | |
6923 | bp_watchpoint | |
2d134ed3 PA |
6924 | bp_catchpoint |
6925 | ||
6926 | */ | |
e4f237da KB |
6927 | |
6928 | static int | |
6929 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6930 | { | |
6931 | enum bptype type = bpt->type; | |
6932 | ||
2d134ed3 PA |
6933 | return (type != bp_watchpoint && type != bp_catchpoint); |
6934 | } | |
6935 | ||
6936 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6937 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6938 | ||
6939 | static int | |
4a64f543 MS |
6940 | watchpoint_locations_match (struct bp_location *loc1, |
6941 | struct bp_location *loc2) | |
2d134ed3 | 6942 | { |
3a5c3e22 PA |
6943 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6944 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6945 | ||
6946 | /* Both of them must exist. */ | |
6947 | gdb_assert (w1 != NULL); | |
6948 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6949 | |
4a64f543 MS |
6950 | /* If the target can evaluate the condition expression in hardware, |
6951 | then we we need to insert both watchpoints even if they are at | |
6952 | the same place. Otherwise the watchpoint will only trigger when | |
6953 | the condition of whichever watchpoint was inserted evaluates to | |
6954 | true, not giving a chance for GDB to check the condition of the | |
6955 | other watchpoint. */ | |
3a5c3e22 | 6956 | if ((w1->cond_exp |
4a64f543 MS |
6957 | && target_can_accel_watchpoint_condition (loc1->address, |
6958 | loc1->length, | |
0cf6dd15 | 6959 | loc1->watchpoint_type, |
3a5c3e22 PA |
6960 | w1->cond_exp)) |
6961 | || (w2->cond_exp | |
4a64f543 MS |
6962 | && target_can_accel_watchpoint_condition (loc2->address, |
6963 | loc2->length, | |
0cf6dd15 | 6964 | loc2->watchpoint_type, |
3a5c3e22 | 6965 | w2->cond_exp))) |
0cf6dd15 TJB |
6966 | return 0; |
6967 | ||
85d721b8 PA |
6968 | /* Note that this checks the owner's type, not the location's. In |
6969 | case the target does not support read watchpoints, but does | |
6970 | support access watchpoints, we'll have bp_read_watchpoint | |
6971 | watchpoints with hw_access locations. Those should be considered | |
6972 | duplicates of hw_read locations. The hw_read locations will | |
6973 | become hw_access locations later. */ | |
2d134ed3 PA |
6974 | return (loc1->owner->type == loc2->owner->type |
6975 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6976 | && loc1->address == loc2->address | |
6977 | && loc1->length == loc2->length); | |
e4f237da KB |
6978 | } |
6979 | ||
31e77af2 | 6980 | /* See breakpoint.h. */ |
6c95b8df | 6981 | |
31e77af2 | 6982 | int |
6c95b8df PA |
6983 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
6984 | struct address_space *aspace2, CORE_ADDR addr2) | |
6985 | { | |
f5656ead | 6986 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6987 | || aspace1 == aspace2) |
6988 | && addr1 == addr2); | |
6989 | } | |
6990 | ||
f1310107 TJB |
6991 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6992 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6993 | matches ASPACE2. On targets that have global breakpoints, the address | |
6994 | space doesn't really matter. */ | |
6995 | ||
6996 | static int | |
6997 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6998 | int len1, struct address_space *aspace2, | |
6999 | CORE_ADDR addr2) | |
7000 | { | |
f5656ead | 7001 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7002 | || aspace1 == aspace2) |
7003 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7004 | } | |
7005 | ||
7006 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7007 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7008 | matches the breakpoint's address space. On targets that have global | |
7009 | breakpoints, the address space doesn't really matter. */ | |
7010 | ||
7011 | static int | |
7012 | breakpoint_location_address_match (struct bp_location *bl, | |
7013 | struct address_space *aspace, | |
7014 | CORE_ADDR addr) | |
7015 | { | |
7016 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7017 | aspace, addr) | |
7018 | || (bl->length | |
7019 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7020 | bl->address, bl->length, | |
7021 | aspace, addr))); | |
7022 | } | |
7023 | ||
1e4d1764 YQ |
7024 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7025 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7026 | true, otherwise returns false. */ | |
7027 | ||
7028 | static int | |
7029 | tracepoint_locations_match (struct bp_location *loc1, | |
7030 | struct bp_location *loc2) | |
7031 | { | |
7032 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7033 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7034 | locations at the same address of different tracepoints are regarded as | |
7035 | different locations. */ | |
7036 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7037 | else | |
7038 | return 0; | |
7039 | } | |
7040 | ||
2d134ed3 PA |
7041 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
7042 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
7043 | represent the same location. */ | |
7044 | ||
7045 | static int | |
4a64f543 MS |
7046 | breakpoint_locations_match (struct bp_location *loc1, |
7047 | struct bp_location *loc2) | |
2d134ed3 | 7048 | { |
2bdf28a0 JK |
7049 | int hw_point1, hw_point2; |
7050 | ||
7051 | /* Both of them must not be in moribund_locations. */ | |
7052 | gdb_assert (loc1->owner != NULL); | |
7053 | gdb_assert (loc2->owner != NULL); | |
7054 | ||
7055 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7056 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7057 | |
7058 | if (hw_point1 != hw_point2) | |
7059 | return 0; | |
7060 | else if (hw_point1) | |
7061 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7062 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7063 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7064 | else |
f1310107 TJB |
7065 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
7066 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
7067 | loc2->pspace->aspace, loc2->address) | |
7068 | && loc1->length == loc2->length); | |
2d134ed3 PA |
7069 | } |
7070 | ||
76897487 KB |
7071 | static void |
7072 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
7073 | int bnum, int have_bnum) | |
7074 | { | |
f63fbe86 MS |
7075 | /* The longest string possibly returned by hex_string_custom |
7076 | is 50 chars. These must be at least that big for safety. */ | |
7077 | char astr1[64]; | |
7078 | char astr2[64]; | |
76897487 | 7079 | |
bb599908 PH |
7080 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7081 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7082 | if (have_bnum) |
8a3fe4f8 | 7083 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7084 | bnum, astr1, astr2); |
7085 | else | |
8a3fe4f8 | 7086 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7087 | } |
7088 | ||
4a64f543 MS |
7089 | /* Adjust a breakpoint's address to account for architectural |
7090 | constraints on breakpoint placement. Return the adjusted address. | |
7091 | Note: Very few targets require this kind of adjustment. For most | |
7092 | targets, this function is simply the identity function. */ | |
76897487 KB |
7093 | |
7094 | static CORE_ADDR | |
a6d9a66e UW |
7095 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7096 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7097 | { |
a6d9a66e | 7098 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7099 | { |
7100 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7101 | return bpaddr; | |
7102 | } | |
88f7da05 KB |
7103 | else if (bptype == bp_watchpoint |
7104 | || bptype == bp_hardware_watchpoint | |
7105 | || bptype == bp_read_watchpoint | |
7106 | || bptype == bp_access_watchpoint | |
fe798b75 | 7107 | || bptype == bp_catchpoint) |
88f7da05 KB |
7108 | { |
7109 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7110 | have their addresses modified. */ | |
7111 | return bpaddr; | |
7112 | } | |
7c16b83e PA |
7113 | else if (bptype == bp_single_step) |
7114 | { | |
7115 | /* Single-step breakpoints should not have their addresses | |
7116 | modified. If there's any architectural constrain that | |
7117 | applies to this address, then it should have already been | |
7118 | taken into account when the breakpoint was created in the | |
7119 | first place. If we didn't do this, stepping through e.g., | |
7120 | Thumb-2 IT blocks would break. */ | |
7121 | return bpaddr; | |
7122 | } | |
76897487 KB |
7123 | else |
7124 | { | |
7125 | CORE_ADDR adjusted_bpaddr; | |
7126 | ||
7127 | /* Some targets have architectural constraints on the placement | |
7128 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7129 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7130 | |
7131 | /* An adjusted breakpoint address can significantly alter | |
7132 | a user's expectations. Print a warning if an adjustment | |
7133 | is required. */ | |
7134 | if (adjusted_bpaddr != bpaddr) | |
7135 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7136 | ||
7137 | return adjusted_bpaddr; | |
7138 | } | |
7139 | } | |
7140 | ||
28010a5d PA |
7141 | void |
7142 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
7143 | struct breakpoint *owner) | |
7cc221ef | 7144 | { |
7cc221ef DJ |
7145 | memset (loc, 0, sizeof (*loc)); |
7146 | ||
348d480f PA |
7147 | gdb_assert (ops != NULL); |
7148 | ||
28010a5d PA |
7149 | loc->ops = ops; |
7150 | loc->owner = owner; | |
511a6cd4 | 7151 | loc->cond = NULL; |
b775012e | 7152 | loc->cond_bytecode = NULL; |
0d381245 VP |
7153 | loc->shlib_disabled = 0; |
7154 | loc->enabled = 1; | |
e049a4b5 | 7155 | |
28010a5d | 7156 | switch (owner->type) |
e049a4b5 DJ |
7157 | { |
7158 | case bp_breakpoint: | |
7c16b83e | 7159 | case bp_single_step: |
e049a4b5 DJ |
7160 | case bp_until: |
7161 | case bp_finish: | |
7162 | case bp_longjmp: | |
7163 | case bp_longjmp_resume: | |
e2e4d78b | 7164 | case bp_longjmp_call_dummy: |
186c406b TT |
7165 | case bp_exception: |
7166 | case bp_exception_resume: | |
e049a4b5 | 7167 | case bp_step_resume: |
2c03e5be | 7168 | case bp_hp_step_resume: |
e049a4b5 DJ |
7169 | case bp_watchpoint_scope: |
7170 | case bp_call_dummy: | |
aa7d318d | 7171 | case bp_std_terminate: |
e049a4b5 DJ |
7172 | case bp_shlib_event: |
7173 | case bp_thread_event: | |
7174 | case bp_overlay_event: | |
4efc6507 | 7175 | case bp_jit_event: |
0fd8e87f | 7176 | case bp_longjmp_master: |
aa7d318d | 7177 | case bp_std_terminate_master: |
186c406b | 7178 | case bp_exception_master: |
0e30163f JK |
7179 | case bp_gnu_ifunc_resolver: |
7180 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7181 | case bp_dprintf: |
e049a4b5 | 7182 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7183 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7184 | break; |
7185 | case bp_hardware_breakpoint: | |
7186 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7187 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7188 | break; |
7189 | case bp_hardware_watchpoint: | |
7190 | case bp_read_watchpoint: | |
7191 | case bp_access_watchpoint: | |
7192 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7193 | break; | |
7194 | case bp_watchpoint: | |
ce78b96d | 7195 | case bp_catchpoint: |
15c3d785 PA |
7196 | case bp_tracepoint: |
7197 | case bp_fast_tracepoint: | |
0fb4aa4b | 7198 | case bp_static_tracepoint: |
e049a4b5 DJ |
7199 | loc->loc_type = bp_loc_other; |
7200 | break; | |
7201 | default: | |
e2e0b3e5 | 7202 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7203 | } |
7204 | ||
f431efe5 | 7205 | loc->refc = 1; |
28010a5d PA |
7206 | } |
7207 | ||
7208 | /* Allocate a struct bp_location. */ | |
7209 | ||
7210 | static struct bp_location * | |
7211 | allocate_bp_location (struct breakpoint *bpt) | |
7212 | { | |
348d480f PA |
7213 | return bpt->ops->allocate_location (bpt); |
7214 | } | |
7cc221ef | 7215 | |
f431efe5 PA |
7216 | static void |
7217 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7218 | { |
348d480f | 7219 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
7220 | xfree (loc); |
7221 | } | |
7222 | ||
f431efe5 PA |
7223 | /* Increment reference count. */ |
7224 | ||
7225 | static void | |
7226 | incref_bp_location (struct bp_location *bl) | |
7227 | { | |
7228 | ++bl->refc; | |
7229 | } | |
7230 | ||
7231 | /* Decrement reference count. If the reference count reaches 0, | |
7232 | destroy the bp_location. Sets *BLP to NULL. */ | |
7233 | ||
7234 | static void | |
7235 | decref_bp_location (struct bp_location **blp) | |
7236 | { | |
0807b50c PA |
7237 | gdb_assert ((*blp)->refc > 0); |
7238 | ||
f431efe5 PA |
7239 | if (--(*blp)->refc == 0) |
7240 | free_bp_location (*blp); | |
7241 | *blp = NULL; | |
7242 | } | |
7243 | ||
346774a9 | 7244 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7245 | |
346774a9 PA |
7246 | static void |
7247 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 7248 | { |
346774a9 | 7249 | struct breakpoint *b1; |
c906108c | 7250 | |
346774a9 PA |
7251 | /* Add this breakpoint to the end of the chain so that a list of |
7252 | breakpoints will come out in order of increasing numbers. */ | |
7253 | ||
7254 | b1 = breakpoint_chain; | |
7255 | if (b1 == 0) | |
7256 | breakpoint_chain = b; | |
7257 | else | |
7258 | { | |
7259 | while (b1->next) | |
7260 | b1 = b1->next; | |
7261 | b1->next = b; | |
7262 | } | |
7263 | } | |
7264 | ||
7265 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7266 | ||
7267 | static void | |
7268 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7269 | struct gdbarch *gdbarch, | |
28010a5d | 7270 | enum bptype bptype, |
c0a91b2b | 7271 | const struct breakpoint_ops *ops) |
346774a9 | 7272 | { |
c906108c | 7273 | memset (b, 0, sizeof (*b)); |
2219d63c | 7274 | |
348d480f PA |
7275 | gdb_assert (ops != NULL); |
7276 | ||
28010a5d | 7277 | b->ops = ops; |
4d28f7a8 | 7278 | b->type = bptype; |
a6d9a66e | 7279 | b->gdbarch = gdbarch; |
c906108c SS |
7280 | b->language = current_language->la_language; |
7281 | b->input_radix = input_radix; | |
7282 | b->thread = -1; | |
b5de0fa7 | 7283 | b->enable_state = bp_enabled; |
c906108c SS |
7284 | b->next = 0; |
7285 | b->silent = 0; | |
7286 | b->ignore_count = 0; | |
7287 | b->commands = NULL; | |
818dd999 | 7288 | b->frame_id = null_frame_id; |
0d381245 | 7289 | b->condition_not_parsed = 0; |
84f4c1fe | 7290 | b->py_bp_object = NULL; |
d0fb5eae | 7291 | b->related_breakpoint = b; |
346774a9 PA |
7292 | } |
7293 | ||
7294 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7295 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7296 | |
7297 | static struct breakpoint * | |
7298 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7299 | enum bptype bptype, |
c0a91b2b | 7300 | const struct breakpoint_ops *ops) |
346774a9 PA |
7301 | { |
7302 | struct breakpoint *b = XNEW (struct breakpoint); | |
7303 | ||
348d480f | 7304 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 7305 | add_to_breakpoint_chain (b); |
0d381245 VP |
7306 | return b; |
7307 | } | |
7308 | ||
0e30163f JK |
7309 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7310 | resolutions should be made as the user specified the location explicitly | |
7311 | enough. */ | |
7312 | ||
0d381245 | 7313 | static void |
0e30163f | 7314 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7315 | { |
2bdf28a0 JK |
7316 | gdb_assert (loc->owner != NULL); |
7317 | ||
0d381245 | 7318 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7319 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7320 | || is_tracepoint (loc->owner)) |
0d381245 | 7321 | { |
0e30163f | 7322 | int is_gnu_ifunc; |
2c02bd72 | 7323 | const char *function_name; |
6a3a010b | 7324 | CORE_ADDR func_addr; |
0e30163f | 7325 | |
2c02bd72 | 7326 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7327 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7328 | |
7329 | if (is_gnu_ifunc && !explicit_loc) | |
7330 | { | |
7331 | struct breakpoint *b = loc->owner; | |
7332 | ||
7333 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7334 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7335 | &loc->requested_address)) |
7336 | { | |
7337 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7338 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7339 | loc->requested_address, | |
7340 | b->type); | |
7341 | } | |
7342 | else if (b->type == bp_breakpoint && b->loc == loc | |
7343 | && loc->next == NULL && b->related_breakpoint == b) | |
7344 | { | |
7345 | /* Create only the whole new breakpoint of this type but do not | |
7346 | mess more complicated breakpoints with multiple locations. */ | |
7347 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7348 | /* Remember the resolver's address for use by the return |
7349 | breakpoint. */ | |
7350 | loc->related_address = func_addr; | |
0e30163f JK |
7351 | } |
7352 | } | |
7353 | ||
2c02bd72 DE |
7354 | if (function_name) |
7355 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7356 | } |
7357 | } | |
7358 | ||
a6d9a66e | 7359 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7360 | struct gdbarch * |
a6d9a66e UW |
7361 | get_sal_arch (struct symtab_and_line sal) |
7362 | { | |
7363 | if (sal.section) | |
7364 | return get_objfile_arch (sal.section->objfile); | |
7365 | if (sal.symtab) | |
eb822aa6 | 7366 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7367 | |
7368 | return NULL; | |
7369 | } | |
7370 | ||
346774a9 PA |
7371 | /* Low level routine for partially initializing a breakpoint of type |
7372 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7373 | file name, and line number are provided by SAL. |
0d381245 VP |
7374 | |
7375 | It is expected that the caller will complete the initialization of | |
7376 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7377 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7378 | |
346774a9 PA |
7379 | static void |
7380 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7381 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7382 | const struct breakpoint_ops *ops) |
0d381245 | 7383 | { |
28010a5d | 7384 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7385 | |
3742cc8b | 7386 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7387 | |
6c95b8df PA |
7388 | if (bptype != bp_catchpoint) |
7389 | gdb_assert (sal.pspace != NULL); | |
7390 | ||
f8eba3c6 TT |
7391 | /* Store the program space that was used to set the breakpoint, |
7392 | except for ordinary breakpoints, which are independent of the | |
7393 | program space. */ | |
7394 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7395 | b->pspace = sal.pspace; | |
346774a9 | 7396 | } |
c906108c | 7397 | |
346774a9 PA |
7398 | /* set_raw_breakpoint is a low level routine for allocating and |
7399 | partially initializing a breakpoint of type BPTYPE. The newly | |
7400 | created breakpoint's address, section, source file name, and line | |
7401 | number are provided by SAL. The newly created and partially | |
7402 | initialized breakpoint is added to the breakpoint chain and | |
7403 | is also returned as the value of this function. | |
7404 | ||
7405 | It is expected that the caller will complete the initialization of | |
7406 | the newly created breakpoint struct as well as output any status | |
7407 | information regarding the creation of a new breakpoint. In | |
7408 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7409 | number! Care should be taken to not allow an error to occur | |
7410 | prior to completing the initialization of the breakpoint. If this | |
7411 | should happen, a bogus breakpoint will be left on the chain. */ | |
7412 | ||
7413 | struct breakpoint * | |
7414 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7415 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7416 | const struct breakpoint_ops *ops) |
346774a9 PA |
7417 | { |
7418 | struct breakpoint *b = XNEW (struct breakpoint); | |
7419 | ||
348d480f | 7420 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7421 | add_to_breakpoint_chain (b); |
c906108c SS |
7422 | return b; |
7423 | } | |
7424 | ||
53a5351d | 7425 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7426 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7427 | initiated the operation. */ | |
c906108c SS |
7428 | |
7429 | void | |
186c406b | 7430 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7431 | { |
35df4500 | 7432 | struct breakpoint *b, *b_tmp; |
186c406b | 7433 | int thread = tp->num; |
0fd8e87f UW |
7434 | |
7435 | /* To avoid having to rescan all objfile symbols at every step, | |
7436 | we maintain a list of continually-inserted but always disabled | |
7437 | longjmp "master" breakpoints. Here, we simply create momentary | |
7438 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7439 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7440 | if (b->pspace == current_program_space |
186c406b TT |
7441 | && (b->type == bp_longjmp_master |
7442 | || b->type == bp_exception_master)) | |
0fd8e87f | 7443 | { |
06edf0c0 PA |
7444 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7445 | struct breakpoint *clone; | |
cc59ec59 | 7446 | |
e2e4d78b JK |
7447 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7448 | after their removal. */ | |
06edf0c0 | 7449 | clone = momentary_breakpoint_from_master (b, type, |
a1aa2221 | 7450 | &longjmp_breakpoint_ops, 1); |
0fd8e87f UW |
7451 | clone->thread = thread; |
7452 | } | |
186c406b TT |
7453 | |
7454 | tp->initiating_frame = frame; | |
c906108c SS |
7455 | } |
7456 | ||
611c83ae | 7457 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7458 | void |
611c83ae | 7459 | delete_longjmp_breakpoint (int thread) |
c906108c | 7460 | { |
35df4500 | 7461 | struct breakpoint *b, *b_tmp; |
c906108c | 7462 | |
35df4500 | 7463 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7464 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7465 | { |
7466 | if (b->thread == thread) | |
7467 | delete_breakpoint (b); | |
7468 | } | |
c906108c SS |
7469 | } |
7470 | ||
f59f708a PA |
7471 | void |
7472 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7473 | { | |
7474 | struct breakpoint *b, *b_tmp; | |
7475 | ||
7476 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7477 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7478 | { | |
7479 | if (b->thread == thread) | |
7480 | b->disposition = disp_del_at_next_stop; | |
7481 | } | |
7482 | } | |
7483 | ||
e2e4d78b JK |
7484 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7485 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7486 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7487 | breakpoints. */ | |
7488 | ||
7489 | struct breakpoint * | |
7490 | set_longjmp_breakpoint_for_call_dummy (void) | |
7491 | { | |
7492 | struct breakpoint *b, *retval = NULL; | |
7493 | ||
7494 | ALL_BREAKPOINTS (b) | |
7495 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7496 | { | |
7497 | struct breakpoint *new_b; | |
7498 | ||
7499 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7500 | &momentary_breakpoint_ops, |
7501 | 1); | |
e2e4d78b JK |
7502 | new_b->thread = pid_to_thread_id (inferior_ptid); |
7503 | ||
7504 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7505 | ||
7506 | gdb_assert (new_b->related_breakpoint == new_b); | |
7507 | if (retval == NULL) | |
7508 | retval = new_b; | |
7509 | new_b->related_breakpoint = retval; | |
7510 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7511 | retval = retval->related_breakpoint; | |
7512 | retval->related_breakpoint = new_b; | |
7513 | } | |
7514 | ||
7515 | return retval; | |
7516 | } | |
7517 | ||
7518 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7519 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7520 | stack. |
7521 | ||
7522 | You should call this function only at places where it is safe to currently | |
7523 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7524 | frames. */ | |
7525 | ||
7526 | void | |
b67a2c6f | 7527 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7528 | { |
7529 | struct breakpoint *b, *b_tmp; | |
7530 | ||
7531 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
b67a2c6f | 7532 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->num) |
e2e4d78b JK |
7533 | { |
7534 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7535 | ||
7536 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7537 | dummy_b = dummy_b->related_breakpoint; | |
7538 | if (dummy_b->type != bp_call_dummy | |
7539 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7540 | continue; | |
7541 | ||
b67a2c6f | 7542 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7543 | |
7544 | while (b->related_breakpoint != b) | |
7545 | { | |
7546 | if (b_tmp == b->related_breakpoint) | |
7547 | b_tmp = b->related_breakpoint->next; | |
7548 | delete_breakpoint (b->related_breakpoint); | |
7549 | } | |
7550 | delete_breakpoint (b); | |
7551 | } | |
7552 | } | |
7553 | ||
1900040c MS |
7554 | void |
7555 | enable_overlay_breakpoints (void) | |
7556 | { | |
52f0bd74 | 7557 | struct breakpoint *b; |
1900040c MS |
7558 | |
7559 | ALL_BREAKPOINTS (b) | |
7560 | if (b->type == bp_overlay_event) | |
7561 | { | |
7562 | b->enable_state = bp_enabled; | |
44702360 | 7563 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7564 | overlay_events_enabled = 1; |
1900040c MS |
7565 | } |
7566 | } | |
7567 | ||
7568 | void | |
7569 | disable_overlay_breakpoints (void) | |
7570 | { | |
52f0bd74 | 7571 | struct breakpoint *b; |
1900040c MS |
7572 | |
7573 | ALL_BREAKPOINTS (b) | |
7574 | if (b->type == bp_overlay_event) | |
7575 | { | |
7576 | b->enable_state = bp_disabled; | |
44702360 | 7577 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7578 | overlay_events_enabled = 0; |
1900040c MS |
7579 | } |
7580 | } | |
7581 | ||
aa7d318d TT |
7582 | /* Set an active std::terminate breakpoint for each std::terminate |
7583 | master breakpoint. */ | |
7584 | void | |
7585 | set_std_terminate_breakpoint (void) | |
7586 | { | |
35df4500 | 7587 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7588 | |
35df4500 | 7589 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7590 | if (b->pspace == current_program_space |
7591 | && b->type == bp_std_terminate_master) | |
7592 | { | |
06edf0c0 | 7593 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7594 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7595 | } |
7596 | } | |
7597 | ||
7598 | /* Delete all the std::terminate breakpoints. */ | |
7599 | void | |
7600 | delete_std_terminate_breakpoint (void) | |
7601 | { | |
35df4500 | 7602 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7603 | |
35df4500 | 7604 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7605 | if (b->type == bp_std_terminate) |
7606 | delete_breakpoint (b); | |
7607 | } | |
7608 | ||
c4093a6a | 7609 | struct breakpoint * |
a6d9a66e | 7610 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7611 | { |
7612 | struct breakpoint *b; | |
c4093a6a | 7613 | |
06edf0c0 PA |
7614 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7615 | &internal_breakpoint_ops); | |
7616 | ||
b5de0fa7 | 7617 | b->enable_state = bp_enabled; |
c4093a6a | 7618 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7619 | b->addr_string |
7620 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7621 | |
44702360 | 7622 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7623 | |
c4093a6a JM |
7624 | return b; |
7625 | } | |
7626 | ||
7627 | void | |
7628 | remove_thread_event_breakpoints (void) | |
7629 | { | |
35df4500 | 7630 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7631 | |
35df4500 | 7632 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7633 | if (b->type == bp_thread_event |
7634 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7635 | delete_breakpoint (b); |
7636 | } | |
7637 | ||
0101ce28 JJ |
7638 | struct lang_and_radix |
7639 | { | |
7640 | enum language lang; | |
7641 | int radix; | |
7642 | }; | |
7643 | ||
4efc6507 DE |
7644 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7645 | ||
7646 | struct breakpoint * | |
7647 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7648 | { | |
7649 | struct breakpoint *b; | |
7650 | ||
06edf0c0 PA |
7651 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7652 | &internal_breakpoint_ops); | |
44702360 | 7653 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
4efc6507 DE |
7654 | return b; |
7655 | } | |
0101ce28 | 7656 | |
03673fc7 PP |
7657 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7658 | ||
7659 | void | |
7660 | remove_jit_event_breakpoints (void) | |
7661 | { | |
7662 | struct breakpoint *b, *b_tmp; | |
7663 | ||
7664 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7665 | if (b->type == bp_jit_event | |
7666 | && b->loc->pspace == current_program_space) | |
7667 | delete_breakpoint (b); | |
7668 | } | |
7669 | ||
cae688ec JJ |
7670 | void |
7671 | remove_solib_event_breakpoints (void) | |
7672 | { | |
35df4500 | 7673 | struct breakpoint *b, *b_tmp; |
cae688ec | 7674 | |
35df4500 | 7675 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7676 | if (b->type == bp_shlib_event |
7677 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7678 | delete_breakpoint (b); |
7679 | } | |
7680 | ||
f37f681c PA |
7681 | /* See breakpoint.h. */ |
7682 | ||
7683 | void | |
7684 | remove_solib_event_breakpoints_at_next_stop (void) | |
7685 | { | |
7686 | struct breakpoint *b, *b_tmp; | |
7687 | ||
7688 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7689 | if (b->type == bp_shlib_event | |
7690 | && b->loc->pspace == current_program_space) | |
7691 | b->disposition = disp_del_at_next_stop; | |
7692 | } | |
7693 | ||
04086b45 PA |
7694 | /* Helper for create_solib_event_breakpoint / |
7695 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7696 | INSERT_MODE to pass through to update_global_location_list. */ | |
7697 | ||
7698 | static struct breakpoint * | |
7699 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7700 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7701 | { |
7702 | struct breakpoint *b; | |
7703 | ||
06edf0c0 PA |
7704 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7705 | &internal_breakpoint_ops); | |
04086b45 | 7706 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7707 | return b; |
7708 | } | |
7709 | ||
04086b45 PA |
7710 | struct breakpoint * |
7711 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7712 | { | |
7713 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7714 | } | |
7715 | ||
f37f681c PA |
7716 | /* See breakpoint.h. */ |
7717 | ||
7718 | struct breakpoint * | |
7719 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7720 | { | |
7721 | struct breakpoint *b; | |
7722 | ||
04086b45 PA |
7723 | /* Explicitly tell update_global_location_list to insert |
7724 | locations. */ | |
7725 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7726 | if (!b->loc->inserted) |
7727 | { | |
7728 | delete_breakpoint (b); | |
7729 | return NULL; | |
7730 | } | |
7731 | return b; | |
7732 | } | |
7733 | ||
cae688ec JJ |
7734 | /* Disable any breakpoints that are on code in shared libraries. Only |
7735 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7736 | ||
7737 | void | |
cb851954 | 7738 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7739 | { |
876fa593 | 7740 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7741 | |
876fa593 | 7742 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7743 | { |
2bdf28a0 | 7744 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7745 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7746 | |
4a64f543 MS |
7747 | /* We apply the check to all breakpoints, including disabled for |
7748 | those with loc->duplicate set. This is so that when breakpoint | |
7749 | becomes enabled, or the duplicate is removed, gdb will try to | |
7750 | insert all breakpoints. If we don't set shlib_disabled here, | |
7751 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7752 | if (((b->type == bp_breakpoint) |
508ccb1f | 7753 | || (b->type == bp_jit_event) |
1042e4c0 | 7754 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7755 | || (is_tracepoint (b))) |
6c95b8df | 7756 | && loc->pspace == current_program_space |
0d381245 | 7757 | && !loc->shlib_disabled |
6c95b8df | 7758 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7759 | ) |
0d381245 VP |
7760 | { |
7761 | loc->shlib_disabled = 1; | |
7762 | } | |
cae688ec JJ |
7763 | } |
7764 | } | |
7765 | ||
63644780 NB |
7766 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7767 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7768 | disabled ones can just stay disabled. */ | |
84acb35a | 7769 | |
75149521 | 7770 | static void |
84acb35a JJ |
7771 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7772 | { | |
876fa593 | 7773 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7774 | int disabled_shlib_breaks = 0; |
7775 | ||
c86cf029 VP |
7776 | /* SunOS a.out shared libraries are always mapped, so do not |
7777 | disable breakpoints; they will only be reported as unloaded | |
7778 | through clear_solib when GDB discards its shared library | |
7779 | list. See clear_solib for more information. */ | |
7780 | if (exec_bfd != NULL | |
7781 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7782 | return; | |
7783 | ||
876fa593 | 7784 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7785 | { |
2bdf28a0 | 7786 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7787 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7788 | |
1e4d1764 | 7789 | if (solib->pspace == loc->pspace |
e2dd7057 | 7790 | && !loc->shlib_disabled |
1e4d1764 YQ |
7791 | && (((b->type == bp_breakpoint |
7792 | || b->type == bp_jit_event | |
7793 | || b->type == bp_hardware_breakpoint) | |
7794 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7795 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7796 | || is_tracepoint (b)) | |
e2dd7057 | 7797 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7798 | { |
e2dd7057 PP |
7799 | loc->shlib_disabled = 1; |
7800 | /* At this point, we cannot rely on remove_breakpoint | |
7801 | succeeding so we must mark the breakpoint as not inserted | |
7802 | to prevent future errors occurring in remove_breakpoints. */ | |
7803 | loc->inserted = 0; | |
8d3788bd VP |
7804 | |
7805 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7806 | observer_notify_breakpoint_modified (b); | |
7807 | ||
e2dd7057 PP |
7808 | if (!disabled_shlib_breaks) |
7809 | { | |
7810 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7811 | warning (_("Temporarily disabling breakpoints " |
7812 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7813 | solib->so_name); |
84acb35a | 7814 | } |
e2dd7057 | 7815 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7816 | } |
7817 | } | |
84acb35a JJ |
7818 | } |
7819 | ||
63644780 NB |
7820 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7821 | notification of free_objfile. Only apply to enabled breakpoints, | |
7822 | disabled ones can just stay disabled. */ | |
7823 | ||
7824 | static void | |
7825 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7826 | { | |
7827 | struct breakpoint *b; | |
7828 | ||
7829 | if (objfile == NULL) | |
7830 | return; | |
7831 | ||
d03de421 PA |
7832 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7833 | managed by the user with add-symbol-file/remove-symbol-file. | |
7834 | Similarly to how breakpoints in shared libraries are handled in | |
7835 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7836 | shlib_disabled so they end up uninserted on the next global |
7837 | location list update. Shared libraries not loaded by the user | |
7838 | aren't handled here -- they're already handled in | |
7839 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7840 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7841 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7842 | main objfile). */ | |
7843 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7844 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7845 | return; |
7846 | ||
7847 | ALL_BREAKPOINTS (b) | |
7848 | { | |
7849 | struct bp_location *loc; | |
7850 | int bp_modified = 0; | |
7851 | ||
7852 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7853 | continue; | |
7854 | ||
7855 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7856 | { | |
7857 | CORE_ADDR loc_addr = loc->address; | |
7858 | ||
7859 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7860 | && loc->loc_type != bp_loc_software_breakpoint) | |
7861 | continue; | |
7862 | ||
7863 | if (loc->shlib_disabled != 0) | |
7864 | continue; | |
7865 | ||
7866 | if (objfile->pspace != loc->pspace) | |
7867 | continue; | |
7868 | ||
7869 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7870 | && loc->loc_type != bp_loc_software_breakpoint) | |
7871 | continue; | |
7872 | ||
7873 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7874 | { | |
7875 | loc->shlib_disabled = 1; | |
08351840 PA |
7876 | /* At this point, we don't know whether the object was |
7877 | unmapped from the inferior or not, so leave the | |
7878 | inserted flag alone. We'll handle failure to | |
7879 | uninsert quietly, in case the object was indeed | |
7880 | unmapped. */ | |
63644780 NB |
7881 | |
7882 | mark_breakpoint_location_modified (loc); | |
7883 | ||
7884 | bp_modified = 1; | |
7885 | } | |
7886 | } | |
7887 | ||
7888 | if (bp_modified) | |
7889 | observer_notify_breakpoint_modified (b); | |
7890 | } | |
7891 | } | |
7892 | ||
ce78b96d JB |
7893 | /* FORK & VFORK catchpoints. */ |
7894 | ||
e29a4733 PA |
7895 | /* An instance of this type is used to represent a fork or vfork |
7896 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7897 | class; users downcast to "struct breakpoint *" when needed. A | |
7898 | breakpoint is really of this type iff its ops pointer points to | |
7899 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7900 | ||
7901 | struct fork_catchpoint | |
7902 | { | |
7903 | /* The base class. */ | |
7904 | struct breakpoint base; | |
7905 | ||
7906 | /* Process id of a child process whose forking triggered this | |
7907 | catchpoint. This field is only valid immediately after this | |
7908 | catchpoint has triggered. */ | |
7909 | ptid_t forked_inferior_pid; | |
7910 | }; | |
7911 | ||
4a64f543 MS |
7912 | /* Implement the "insert" breakpoint_ops method for fork |
7913 | catchpoints. */ | |
ce78b96d | 7914 | |
77b06cd7 TJB |
7915 | static int |
7916 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7917 | { |
dfd4cc63 | 7918 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7919 | } |
7920 | ||
4a64f543 MS |
7921 | /* Implement the "remove" breakpoint_ops method for fork |
7922 | catchpoints. */ | |
ce78b96d JB |
7923 | |
7924 | static int | |
77b06cd7 | 7925 | remove_catch_fork (struct bp_location *bl) |
ce78b96d | 7926 | { |
dfd4cc63 | 7927 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7928 | } |
7929 | ||
7930 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7931 | catchpoints. */ | |
7932 | ||
7933 | static int | |
f1310107 | 7934 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7935 | struct address_space *aspace, CORE_ADDR bp_addr, |
7936 | const struct target_waitstatus *ws) | |
ce78b96d | 7937 | { |
e29a4733 PA |
7938 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7939 | ||
f90263c1 TT |
7940 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7941 | return 0; | |
7942 | ||
7943 | c->forked_inferior_pid = ws->value.related_pid; | |
7944 | return 1; | |
ce78b96d JB |
7945 | } |
7946 | ||
4a64f543 MS |
7947 | /* Implement the "print_it" breakpoint_ops method for fork |
7948 | catchpoints. */ | |
ce78b96d JB |
7949 | |
7950 | static enum print_stop_action | |
348d480f | 7951 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7952 | { |
36dfb11c | 7953 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7954 | struct breakpoint *b = bs->breakpoint_at; |
7955 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7956 | |
ce78b96d | 7957 | annotate_catchpoint (b->number); |
36dfb11c TT |
7958 | if (b->disposition == disp_del) |
7959 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7960 | else | |
7961 | ui_out_text (uiout, "\nCatchpoint "); | |
7962 | if (ui_out_is_mi_like_p (uiout)) | |
7963 | { | |
7964 | ui_out_field_string (uiout, "reason", | |
7965 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7966 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7967 | } | |
7968 | ui_out_field_int (uiout, "bkptno", b->number); | |
7969 | ui_out_text (uiout, " (forked process "); | |
7970 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7971 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7972 | return PRINT_SRC_AND_LOC; |
7973 | } | |
7974 | ||
4a64f543 MS |
7975 | /* Implement the "print_one" breakpoint_ops method for fork |
7976 | catchpoints. */ | |
ce78b96d JB |
7977 | |
7978 | static void | |
a6d9a66e | 7979 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7980 | { |
e29a4733 | 7981 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7982 | struct value_print_options opts; |
79a45e25 | 7983 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7984 | |
7985 | get_user_print_options (&opts); | |
7986 | ||
4a64f543 MS |
7987 | /* Field 4, the address, is omitted (which makes the columns not |
7988 | line up too nicely with the headers, but the effect is relatively | |
7989 | readable). */ | |
79a45b7d | 7990 | if (opts.addressprint) |
ce78b96d JB |
7991 | ui_out_field_skip (uiout, "addr"); |
7992 | annotate_field (5); | |
7993 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7994 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7995 | { |
7996 | ui_out_text (uiout, ", process "); | |
7997 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7998 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7999 | ui_out_spaces (uiout, 1); |
8000 | } | |
8ac3646f TT |
8001 | |
8002 | if (ui_out_is_mi_like_p (uiout)) | |
8003 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
8004 | } |
8005 | ||
8006 | /* Implement the "print_mention" breakpoint_ops method for fork | |
8007 | catchpoints. */ | |
8008 | ||
8009 | static void | |
8010 | print_mention_catch_fork (struct breakpoint *b) | |
8011 | { | |
8012 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
8013 | } | |
8014 | ||
6149aea9 PA |
8015 | /* Implement the "print_recreate" breakpoint_ops method for fork |
8016 | catchpoints. */ | |
8017 | ||
8018 | static void | |
8019 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
8020 | { | |
8021 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 8022 | print_recreate_thread (b, fp); |
6149aea9 PA |
8023 | } |
8024 | ||
ce78b96d JB |
8025 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
8026 | ||
2060206e | 8027 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 8028 | |
4a64f543 MS |
8029 | /* Implement the "insert" breakpoint_ops method for vfork |
8030 | catchpoints. */ | |
ce78b96d | 8031 | |
77b06cd7 TJB |
8032 | static int |
8033 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 8034 | { |
dfd4cc63 | 8035 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8036 | } |
8037 | ||
4a64f543 MS |
8038 | /* Implement the "remove" breakpoint_ops method for vfork |
8039 | catchpoints. */ | |
ce78b96d JB |
8040 | |
8041 | static int | |
77b06cd7 | 8042 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d | 8043 | { |
dfd4cc63 | 8044 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8045 | } |
8046 | ||
8047 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
8048 | catchpoints. */ | |
8049 | ||
8050 | static int | |
f1310107 | 8051 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
8052 | struct address_space *aspace, CORE_ADDR bp_addr, |
8053 | const struct target_waitstatus *ws) | |
ce78b96d | 8054 | { |
e29a4733 PA |
8055 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8056 | ||
f90263c1 TT |
8057 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
8058 | return 0; | |
8059 | ||
8060 | c->forked_inferior_pid = ws->value.related_pid; | |
8061 | return 1; | |
ce78b96d JB |
8062 | } |
8063 | ||
4a64f543 MS |
8064 | /* Implement the "print_it" breakpoint_ops method for vfork |
8065 | catchpoints. */ | |
ce78b96d JB |
8066 | |
8067 | static enum print_stop_action | |
348d480f | 8068 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 8069 | { |
36dfb11c | 8070 | struct ui_out *uiout = current_uiout; |
348d480f | 8071 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
8072 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
8073 | ||
ce78b96d | 8074 | annotate_catchpoint (b->number); |
36dfb11c TT |
8075 | if (b->disposition == disp_del) |
8076 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8077 | else | |
8078 | ui_out_text (uiout, "\nCatchpoint "); | |
8079 | if (ui_out_is_mi_like_p (uiout)) | |
8080 | { | |
8081 | ui_out_field_string (uiout, "reason", | |
8082 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
8083 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8084 | } | |
8085 | ui_out_field_int (uiout, "bkptno", b->number); | |
8086 | ui_out_text (uiout, " (vforked process "); | |
8087 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8088 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8089 | return PRINT_SRC_AND_LOC; |
8090 | } | |
8091 | ||
4a64f543 MS |
8092 | /* Implement the "print_one" breakpoint_ops method for vfork |
8093 | catchpoints. */ | |
ce78b96d JB |
8094 | |
8095 | static void | |
a6d9a66e | 8096 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8097 | { |
e29a4733 | 8098 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8099 | struct value_print_options opts; |
79a45e25 | 8100 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8101 | |
8102 | get_user_print_options (&opts); | |
4a64f543 MS |
8103 | /* Field 4, the address, is omitted (which makes the columns not |
8104 | line up too nicely with the headers, but the effect is relatively | |
8105 | readable). */ | |
79a45b7d | 8106 | if (opts.addressprint) |
ce78b96d JB |
8107 | ui_out_field_skip (uiout, "addr"); |
8108 | annotate_field (5); | |
8109 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 8110 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8111 | { |
8112 | ui_out_text (uiout, ", process "); | |
8113 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8114 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8115 | ui_out_spaces (uiout, 1); |
8116 | } | |
8ac3646f TT |
8117 | |
8118 | if (ui_out_is_mi_like_p (uiout)) | |
8119 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
8120 | } |
8121 | ||
8122 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8123 | catchpoints. */ | |
8124 | ||
8125 | static void | |
8126 | print_mention_catch_vfork (struct breakpoint *b) | |
8127 | { | |
8128 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8129 | } | |
8130 | ||
6149aea9 PA |
8131 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8132 | catchpoints. */ | |
8133 | ||
8134 | static void | |
8135 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8136 | { | |
8137 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8138 | print_recreate_thread (b, fp); |
6149aea9 PA |
8139 | } |
8140 | ||
ce78b96d JB |
8141 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8142 | ||
2060206e | 8143 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8144 | |
edcc5120 TT |
8145 | /* An instance of this type is used to represent an solib catchpoint. |
8146 | It includes a "struct breakpoint" as a kind of base class; users | |
8147 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8148 | really of this type iff its ops pointer points to | |
8149 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
8150 | ||
8151 | struct solib_catchpoint | |
8152 | { | |
8153 | /* The base class. */ | |
8154 | struct breakpoint base; | |
8155 | ||
8156 | /* True for "catch load", false for "catch unload". */ | |
8157 | unsigned char is_load; | |
8158 | ||
8159 | /* Regular expression to match, if any. COMPILED is only valid when | |
8160 | REGEX is non-NULL. */ | |
8161 | char *regex; | |
8162 | regex_t compiled; | |
8163 | }; | |
8164 | ||
8165 | static void | |
8166 | dtor_catch_solib (struct breakpoint *b) | |
8167 | { | |
8168 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8169 | ||
8170 | if (self->regex) | |
8171 | regfree (&self->compiled); | |
8172 | xfree (self->regex); | |
8173 | ||
8174 | base_breakpoint_ops.dtor (b); | |
8175 | } | |
8176 | ||
8177 | static int | |
8178 | insert_catch_solib (struct bp_location *ignore) | |
8179 | { | |
8180 | return 0; | |
8181 | } | |
8182 | ||
8183 | static int | |
8184 | remove_catch_solib (struct bp_location *ignore) | |
8185 | { | |
8186 | return 0; | |
8187 | } | |
8188 | ||
8189 | static int | |
8190 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8191 | struct address_space *aspace, | |
8192 | CORE_ADDR bp_addr, | |
8193 | const struct target_waitstatus *ws) | |
8194 | { | |
8195 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8196 | struct breakpoint *other; | |
8197 | ||
8198 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8199 | return 1; | |
8200 | ||
8201 | ALL_BREAKPOINTS (other) | |
8202 | { | |
8203 | struct bp_location *other_bl; | |
8204 | ||
8205 | if (other == bl->owner) | |
8206 | continue; | |
8207 | ||
8208 | if (other->type != bp_shlib_event) | |
8209 | continue; | |
8210 | ||
8211 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
8212 | continue; | |
8213 | ||
8214 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8215 | { | |
8216 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8217 | return 1; | |
8218 | } | |
8219 | } | |
8220 | ||
8221 | return 0; | |
8222 | } | |
8223 | ||
8224 | static void | |
8225 | check_status_catch_solib (struct bpstats *bs) | |
8226 | { | |
8227 | struct solib_catchpoint *self | |
8228 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8229 | int ix; | |
8230 | ||
8231 | if (self->is_load) | |
8232 | { | |
8233 | struct so_list *iter; | |
8234 | ||
8235 | for (ix = 0; | |
8236 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8237 | ix, iter); | |
8238 | ++ix) | |
8239 | { | |
8240 | if (!self->regex | |
8241 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
8242 | return; | |
8243 | } | |
8244 | } | |
8245 | else | |
8246 | { | |
8247 | char *iter; | |
8248 | ||
8249 | for (ix = 0; | |
8250 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8251 | ix, iter); | |
8252 | ++ix) | |
8253 | { | |
8254 | if (!self->regex | |
8255 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
8256 | return; | |
8257 | } | |
8258 | } | |
8259 | ||
8260 | bs->stop = 0; | |
8261 | bs->print_it = print_it_noop; | |
8262 | } | |
8263 | ||
8264 | static enum print_stop_action | |
8265 | print_it_catch_solib (bpstat bs) | |
8266 | { | |
8267 | struct breakpoint *b = bs->breakpoint_at; | |
8268 | struct ui_out *uiout = current_uiout; | |
8269 | ||
8270 | annotate_catchpoint (b->number); | |
8271 | if (b->disposition == disp_del) | |
8272 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8273 | else | |
8274 | ui_out_text (uiout, "\nCatchpoint "); | |
8275 | ui_out_field_int (uiout, "bkptno", b->number); | |
8276 | ui_out_text (uiout, "\n"); | |
8277 | if (ui_out_is_mi_like_p (uiout)) | |
8278 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8279 | print_solib_event (1); | |
8280 | return PRINT_SRC_AND_LOC; | |
8281 | } | |
8282 | ||
8283 | static void | |
8284 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8285 | { | |
8286 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8287 | struct value_print_options opts; | |
8288 | struct ui_out *uiout = current_uiout; | |
8289 | char *msg; | |
8290 | ||
8291 | get_user_print_options (&opts); | |
8292 | /* Field 4, the address, is omitted (which makes the columns not | |
8293 | line up too nicely with the headers, but the effect is relatively | |
8294 | readable). */ | |
8295 | if (opts.addressprint) | |
8296 | { | |
8297 | annotate_field (4); | |
8298 | ui_out_field_skip (uiout, "addr"); | |
8299 | } | |
8300 | ||
8301 | annotate_field (5); | |
8302 | if (self->is_load) | |
8303 | { | |
8304 | if (self->regex) | |
8305 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8306 | else | |
8307 | msg = xstrdup (_("load of library")); | |
8308 | } | |
8309 | else | |
8310 | { | |
8311 | if (self->regex) | |
8312 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8313 | else | |
8314 | msg = xstrdup (_("unload of library")); | |
8315 | } | |
8316 | ui_out_field_string (uiout, "what", msg); | |
8317 | xfree (msg); | |
8ac3646f TT |
8318 | |
8319 | if (ui_out_is_mi_like_p (uiout)) | |
8320 | ui_out_field_string (uiout, "catch-type", | |
8321 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8322 | } |
8323 | ||
8324 | static void | |
8325 | print_mention_catch_solib (struct breakpoint *b) | |
8326 | { | |
8327 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8328 | ||
8329 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8330 | self->is_load ? "load" : "unload"); | |
8331 | } | |
8332 | ||
8333 | static void | |
8334 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8335 | { | |
8336 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8337 | ||
8338 | fprintf_unfiltered (fp, "%s %s", | |
8339 | b->disposition == disp_del ? "tcatch" : "catch", | |
8340 | self->is_load ? "load" : "unload"); | |
8341 | if (self->regex) | |
8342 | fprintf_unfiltered (fp, " %s", self->regex); | |
8343 | fprintf_unfiltered (fp, "\n"); | |
8344 | } | |
8345 | ||
8346 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8347 | ||
91985142 MG |
8348 | /* Shared helper function (MI and CLI) for creating and installing |
8349 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8350 | the events to be caught are load events, otherwise they are | |
8351 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8352 | temporary one. If ENABLED is non-zero the catchpoint is | |
8353 | created in an enabled state. */ | |
edcc5120 | 8354 | |
91985142 MG |
8355 | void |
8356 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
8357 | { |
8358 | struct solib_catchpoint *c; | |
8359 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
8360 | struct cleanup *cleanup; |
8361 | ||
edcc5120 TT |
8362 | if (!arg) |
8363 | arg = ""; | |
8364 | arg = skip_spaces (arg); | |
8365 | ||
8366 | c = XCNEW (struct solib_catchpoint); | |
8367 | cleanup = make_cleanup (xfree, c); | |
8368 | ||
8369 | if (*arg != '\0') | |
8370 | { | |
8371 | int errcode; | |
8372 | ||
8373 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
8374 | if (errcode != 0) | |
8375 | { | |
8376 | char *err = get_regcomp_error (errcode, &c->compiled); | |
8377 | ||
8378 | make_cleanup (xfree, err); | |
8379 | error (_("Invalid regexp (%s): %s"), err, arg); | |
8380 | } | |
8381 | c->regex = xstrdup (arg); | |
8382 | } | |
8383 | ||
8384 | c->is_load = is_load; | |
91985142 | 8385 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
8386 | &catch_solib_breakpoint_ops); |
8387 | ||
91985142 MG |
8388 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
8389 | ||
edcc5120 TT |
8390 | discard_cleanups (cleanup); |
8391 | install_breakpoint (0, &c->base, 1); | |
8392 | } | |
8393 | ||
91985142 MG |
8394 | /* A helper function that does all the work for "catch load" and |
8395 | "catch unload". */ | |
8396 | ||
8397 | static void | |
8398 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8399 | struct cmd_list_element *command) | |
8400 | { | |
8401 | int tempflag; | |
8402 | const int enabled = 1; | |
8403 | ||
8404 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8405 | ||
8406 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8407 | } | |
8408 | ||
edcc5120 TT |
8409 | static void |
8410 | catch_load_command_1 (char *arg, int from_tty, | |
8411 | struct cmd_list_element *command) | |
8412 | { | |
8413 | catch_load_or_unload (arg, from_tty, 1, command); | |
8414 | } | |
8415 | ||
8416 | static void | |
8417 | catch_unload_command_1 (char *arg, int from_tty, | |
8418 | struct cmd_list_element *command) | |
8419 | { | |
8420 | catch_load_or_unload (arg, from_tty, 0, command); | |
8421 | } | |
8422 | ||
346774a9 PA |
8423 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8424 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8425 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8426 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8427 | |
ab04a2af | 8428 | void |
346774a9 PA |
8429 | init_catchpoint (struct breakpoint *b, |
8430 | struct gdbarch *gdbarch, int tempflag, | |
8431 | char *cond_string, | |
c0a91b2b | 8432 | const struct breakpoint_ops *ops) |
c906108c | 8433 | { |
c5aa993b | 8434 | struct symtab_and_line sal; |
346774a9 | 8435 | |
fe39c653 | 8436 | init_sal (&sal); |
6c95b8df | 8437 | sal.pspace = current_program_space; |
c5aa993b | 8438 | |
28010a5d | 8439 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8440 | |
1b36a34b | 8441 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8442 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8443 | } |
8444 | ||
28010a5d | 8445 | void |
3ea46bff | 8446 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8447 | { |
8448 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8449 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8450 | if (is_tracepoint (b)) |
8451 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8452 | if (!internal) |
8453 | mention (b); | |
c56053d2 | 8454 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8455 | |
8456 | if (update_gll) | |
44702360 | 8457 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8458 | } |
8459 | ||
9b70b993 | 8460 | static void |
a6d9a66e UW |
8461 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8462 | int tempflag, char *cond_string, | |
c0a91b2b | 8463 | const struct breakpoint_ops *ops) |
c906108c | 8464 | { |
e29a4733 | 8465 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8466 | |
e29a4733 PA |
8467 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8468 | ||
8469 | c->forked_inferior_pid = null_ptid; | |
8470 | ||
3ea46bff | 8471 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8472 | } |
8473 | ||
fe798b75 JB |
8474 | /* Exec catchpoints. */ |
8475 | ||
b4d90040 PA |
8476 | /* An instance of this type is used to represent an exec catchpoint. |
8477 | It includes a "struct breakpoint" as a kind of base class; users | |
8478 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8479 | really of this type iff its ops pointer points to | |
8480 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8481 | ||
8482 | struct exec_catchpoint | |
8483 | { | |
8484 | /* The base class. */ | |
8485 | struct breakpoint base; | |
8486 | ||
8487 | /* Filename of a program whose exec triggered this catchpoint. | |
8488 | This field is only valid immediately after this catchpoint has | |
8489 | triggered. */ | |
8490 | char *exec_pathname; | |
8491 | }; | |
8492 | ||
8493 | /* Implement the "dtor" breakpoint_ops method for exec | |
8494 | catchpoints. */ | |
8495 | ||
8496 | static void | |
8497 | dtor_catch_exec (struct breakpoint *b) | |
8498 | { | |
8499 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8500 | ||
8501 | xfree (c->exec_pathname); | |
348d480f | 8502 | |
2060206e | 8503 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8504 | } |
8505 | ||
77b06cd7 TJB |
8506 | static int |
8507 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8508 | { |
dfd4cc63 | 8509 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8510 | } |
c906108c | 8511 | |
fe798b75 | 8512 | static int |
77b06cd7 | 8513 | remove_catch_exec (struct bp_location *bl) |
fe798b75 | 8514 | { |
dfd4cc63 | 8515 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8516 | } |
c906108c | 8517 | |
fe798b75 | 8518 | static int |
f1310107 | 8519 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8520 | struct address_space *aspace, CORE_ADDR bp_addr, |
8521 | const struct target_waitstatus *ws) | |
fe798b75 | 8522 | { |
b4d90040 PA |
8523 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8524 | ||
f90263c1 TT |
8525 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8526 | return 0; | |
8527 | ||
8528 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8529 | return 1; | |
fe798b75 | 8530 | } |
c906108c | 8531 | |
fe798b75 | 8532 | static enum print_stop_action |
348d480f | 8533 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8534 | { |
36dfb11c | 8535 | struct ui_out *uiout = current_uiout; |
348d480f | 8536 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8537 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8538 | ||
fe798b75 | 8539 | annotate_catchpoint (b->number); |
36dfb11c TT |
8540 | if (b->disposition == disp_del) |
8541 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8542 | else | |
8543 | ui_out_text (uiout, "\nCatchpoint "); | |
8544 | if (ui_out_is_mi_like_p (uiout)) | |
8545 | { | |
8546 | ui_out_field_string (uiout, "reason", | |
8547 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8548 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8549 | } | |
8550 | ui_out_field_int (uiout, "bkptno", b->number); | |
8551 | ui_out_text (uiout, " (exec'd "); | |
8552 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8553 | ui_out_text (uiout, "), "); | |
8554 | ||
fe798b75 | 8555 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8556 | } |
8557 | ||
fe798b75 | 8558 | static void |
a6d9a66e | 8559 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8560 | { |
b4d90040 | 8561 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8562 | struct value_print_options opts; |
79a45e25 | 8563 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8564 | |
8565 | get_user_print_options (&opts); | |
8566 | ||
8567 | /* Field 4, the address, is omitted (which makes the columns | |
8568 | not line up too nicely with the headers, but the effect | |
8569 | is relatively readable). */ | |
8570 | if (opts.addressprint) | |
8571 | ui_out_field_skip (uiout, "addr"); | |
8572 | annotate_field (5); | |
8573 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8574 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8575 | { |
8576 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8577 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8578 | ui_out_text (uiout, "\" "); |
8579 | } | |
8ac3646f TT |
8580 | |
8581 | if (ui_out_is_mi_like_p (uiout)) | |
8582 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
8583 | } |
8584 | ||
8585 | static void | |
8586 | print_mention_catch_exec (struct breakpoint *b) | |
8587 | { | |
8588 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8589 | } | |
8590 | ||
6149aea9 PA |
8591 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8592 | catchpoints. */ | |
8593 | ||
8594 | static void | |
8595 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8596 | { | |
8597 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8598 | print_recreate_thread (b, fp); |
6149aea9 PA |
8599 | } |
8600 | ||
2060206e | 8601 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8602 | |
c906108c | 8603 | static int |
fba45db2 | 8604 | hw_breakpoint_used_count (void) |
c906108c | 8605 | { |
c906108c | 8606 | int i = 0; |
f1310107 TJB |
8607 | struct breakpoint *b; |
8608 | struct bp_location *bl; | |
c906108c SS |
8609 | |
8610 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8611 | { |
d6b74ac4 | 8612 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8613 | for (bl = b->loc; bl; bl = bl->next) |
8614 | { | |
8615 | /* Special types of hardware breakpoints may use more than | |
8616 | one register. */ | |
348d480f | 8617 | i += b->ops->resources_needed (bl); |
f1310107 | 8618 | } |
c5aa993b | 8619 | } |
c906108c SS |
8620 | |
8621 | return i; | |
8622 | } | |
8623 | ||
a1398e0c PA |
8624 | /* Returns the resources B would use if it were a hardware |
8625 | watchpoint. */ | |
8626 | ||
c906108c | 8627 | static int |
a1398e0c | 8628 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8629 | { |
c906108c | 8630 | int i = 0; |
e09342b5 | 8631 | struct bp_location *bl; |
c906108c | 8632 | |
a1398e0c PA |
8633 | if (!breakpoint_enabled (b)) |
8634 | return 0; | |
8635 | ||
8636 | for (bl = b->loc; bl; bl = bl->next) | |
8637 | { | |
8638 | /* Special types of hardware watchpoints may use more than | |
8639 | one register. */ | |
8640 | i += b->ops->resources_needed (bl); | |
8641 | } | |
8642 | ||
8643 | return i; | |
8644 | } | |
8645 | ||
8646 | /* Returns the sum the used resources of all hardware watchpoints of | |
8647 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8648 | the sum of the used resources of all hardware watchpoints of other | |
8649 | types _not_ TYPE. */ | |
8650 | ||
8651 | static int | |
8652 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8653 | enum bptype type, int *other_type_used) | |
8654 | { | |
8655 | int i = 0; | |
8656 | struct breakpoint *b; | |
8657 | ||
c906108c SS |
8658 | *other_type_used = 0; |
8659 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8660 | { |
a1398e0c PA |
8661 | if (b == except) |
8662 | continue; | |
e09342b5 TJB |
8663 | if (!breakpoint_enabled (b)) |
8664 | continue; | |
8665 | ||
a1398e0c PA |
8666 | if (b->type == type) |
8667 | i += hw_watchpoint_use_count (b); | |
8668 | else if (is_hardware_watchpoint (b)) | |
8669 | *other_type_used = 1; | |
e09342b5 TJB |
8670 | } |
8671 | ||
c906108c SS |
8672 | return i; |
8673 | } | |
8674 | ||
c906108c | 8675 | void |
fba45db2 | 8676 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8677 | { |
c5aa993b | 8678 | struct breakpoint *b; |
c906108c SS |
8679 | |
8680 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8681 | { |
cc60f2e3 | 8682 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8683 | { |
b5de0fa7 | 8684 | b->enable_state = bp_call_disabled; |
44702360 | 8685 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8686 | } |
8687 | } | |
c906108c SS |
8688 | } |
8689 | ||
8690 | void | |
fba45db2 | 8691 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8692 | { |
c5aa993b | 8693 | struct breakpoint *b; |
c906108c SS |
8694 | |
8695 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8696 | { |
cc60f2e3 | 8697 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8698 | { |
b5de0fa7 | 8699 | b->enable_state = bp_enabled; |
44702360 | 8700 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8701 | } |
8702 | } | |
c906108c SS |
8703 | } |
8704 | ||
8bea4e01 UW |
8705 | void |
8706 | disable_breakpoints_before_startup (void) | |
8707 | { | |
6c95b8df | 8708 | current_program_space->executing_startup = 1; |
44702360 | 8709 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8710 | } |
8711 | ||
8712 | void | |
8713 | enable_breakpoints_after_startup (void) | |
8714 | { | |
6c95b8df | 8715 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8716 | breakpoint_re_set (); |
8bea4e01 UW |
8717 | } |
8718 | ||
7c16b83e PA |
8719 | /* Create a new single-step breakpoint for thread THREAD, with no |
8720 | locations. */ | |
c906108c | 8721 | |
7c16b83e PA |
8722 | static struct breakpoint * |
8723 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8724 | { | |
8725 | struct breakpoint *b = XNEW (struct breakpoint); | |
8726 | ||
8727 | init_raw_breakpoint_without_location (b, gdbarch, bp_single_step, | |
8728 | &momentary_breakpoint_ops); | |
8729 | ||
8730 | b->disposition = disp_donttouch; | |
8731 | b->frame_id = null_frame_id; | |
8732 | ||
8733 | b->thread = thread; | |
8734 | gdb_assert (b->thread != 0); | |
8735 | ||
8736 | add_to_breakpoint_chain (b); | |
8737 | ||
8738 | return b; | |
8739 | } | |
8740 | ||
8741 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8742 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8743 | frame. */ | |
c906108c SS |
8744 | |
8745 | struct breakpoint * | |
a6d9a66e UW |
8746 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8747 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8748 | { |
52f0bd74 | 8749 | struct breakpoint *b; |
edb3359d | 8750 | |
193facb3 JK |
8751 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8752 | tail-called one. */ | |
8753 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8754 | |
06edf0c0 | 8755 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8756 | b->enable_state = bp_enabled; |
8757 | b->disposition = disp_donttouch; | |
818dd999 | 8758 | b->frame_id = frame_id; |
c906108c | 8759 | |
4a64f543 MS |
8760 | /* If we're debugging a multi-threaded program, then we want |
8761 | momentary breakpoints to be active in only a single thread of | |
8762 | control. */ | |
39f77062 KB |
8763 | if (in_thread_list (inferior_ptid)) |
8764 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8765 | |
44702360 | 8766 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8767 | |
c906108c SS |
8768 | return b; |
8769 | } | |
611c83ae | 8770 | |
06edf0c0 | 8771 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8772 | The new breakpoint will have type TYPE, use OPS as its |
8773 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8774 | |
06edf0c0 PA |
8775 | static struct breakpoint * |
8776 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8777 | enum bptype type, | |
a1aa2221 LM |
8778 | const struct breakpoint_ops *ops, |
8779 | int loc_enabled) | |
e58b0e63 PA |
8780 | { |
8781 | struct breakpoint *copy; | |
8782 | ||
06edf0c0 | 8783 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8784 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8785 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8786 | |
a6d9a66e | 8787 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8788 | copy->loc->requested_address = orig->loc->requested_address; |
8789 | copy->loc->address = orig->loc->address; | |
8790 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8791 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8792 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8793 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8794 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8795 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8796 | copy->frame_id = orig->frame_id; |
8797 | copy->thread = orig->thread; | |
6c95b8df | 8798 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8799 | |
8800 | copy->enable_state = bp_enabled; | |
8801 | copy->disposition = disp_donttouch; | |
8802 | copy->number = internal_breakpoint_number--; | |
8803 | ||
44702360 | 8804 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8805 | return copy; |
8806 | } | |
8807 | ||
06edf0c0 PA |
8808 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8809 | ORIG is NULL. */ | |
8810 | ||
8811 | struct breakpoint * | |
8812 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8813 | { | |
8814 | /* If there's nothing to clone, then return nothing. */ | |
8815 | if (orig == NULL) | |
8816 | return NULL; | |
8817 | ||
a1aa2221 | 8818 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8819 | } |
8820 | ||
611c83ae | 8821 | struct breakpoint * |
a6d9a66e UW |
8822 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8823 | enum bptype type) | |
611c83ae PA |
8824 | { |
8825 | struct symtab_and_line sal; | |
8826 | ||
8827 | sal = find_pc_line (pc, 0); | |
8828 | sal.pc = pc; | |
8829 | sal.section = find_pc_overlay (pc); | |
8830 | sal.explicit_pc = 1; | |
8831 | ||
a6d9a66e | 8832 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8833 | } |
c906108c | 8834 | \f |
c5aa993b | 8835 | |
c906108c SS |
8836 | /* Tell the user we have just set a breakpoint B. */ |
8837 | ||
8838 | static void | |
fba45db2 | 8839 | mention (struct breakpoint *b) |
c906108c | 8840 | { |
348d480f | 8841 | b->ops->print_mention (b); |
79a45e25 | 8842 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8843 | return; |
c906108c SS |
8844 | printf_filtered ("\n"); |
8845 | } | |
c906108c | 8846 | \f |
c5aa993b | 8847 | |
1a853c52 PA |
8848 | static int bp_loc_is_permanent (struct bp_location *loc); |
8849 | ||
0d381245 | 8850 | static struct bp_location * |
39d61571 | 8851 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8852 | const struct symtab_and_line *sal) |
8853 | { | |
8854 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8855 | CORE_ADDR adjusted_address; |
8856 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8857 | ||
8858 | if (loc_gdbarch == NULL) | |
8859 | loc_gdbarch = b->gdbarch; | |
8860 | ||
8861 | /* Adjust the breakpoint's address prior to allocating a location. | |
8862 | Once we call allocate_bp_location(), that mostly uninitialized | |
8863 | location will be placed on the location chain. Adjustment of the | |
8864 | breakpoint may cause target_read_memory() to be called and we do | |
8865 | not want its scan of the location chain to find a breakpoint and | |
8866 | location that's only been partially initialized. */ | |
8867 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8868 | sal->pc, b->type); | |
0d381245 | 8869 | |
d30113d4 | 8870 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8871 | loc = allocate_bp_location (b); |
d30113d4 JK |
8872 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8873 | tmp = &((*tmp)->next)) | |
0d381245 | 8874 | ; |
d30113d4 | 8875 | loc->next = *tmp; |
0d381245 | 8876 | *tmp = loc; |
3742cc8b | 8877 | |
0d381245 | 8878 | loc->requested_address = sal->pc; |
3742cc8b | 8879 | loc->address = adjusted_address; |
6c95b8df | 8880 | loc->pspace = sal->pspace; |
729662a5 TT |
8881 | loc->probe.probe = sal->probe; |
8882 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8883 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8884 | loc->section = sal->section; |
3742cc8b | 8885 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8886 | loc->line_number = sal->line; |
2f202fde | 8887 | loc->symtab = sal->symtab; |
f8eba3c6 | 8888 | |
0e30163f JK |
8889 | set_breakpoint_location_function (loc, |
8890 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8891 | |
6ae88661 LM |
8892 | /* While by definition, permanent breakpoints are already present in the |
8893 | code, we don't mark the location as inserted. Normally one would expect | |
8894 | that GDB could rely on that breakpoint instruction to stop the program, | |
8895 | thus removing the need to insert its own breakpoint, except that executing | |
8896 | the breakpoint instruction can kill the target instead of reporting a | |
8897 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8898 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8899 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8900 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8901 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8902 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8903 | it manually increments the PC, thus avoiding executing the breakpoint | |
8904 | instruction.) */ | |
1a853c52 | 8905 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8906 | loc->permanent = 1; |
1a853c52 | 8907 | |
0d381245 VP |
8908 | return loc; |
8909 | } | |
514f746b AR |
8910 | \f |
8911 | ||
1cf4d951 | 8912 | /* See breakpoint.h. */ |
514f746b | 8913 | |
1cf4d951 PA |
8914 | int |
8915 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8916 | { |
8917 | int len; | |
8918 | CORE_ADDR addr; | |
1afeeb75 | 8919 | const gdb_byte *bpoint; |
514f746b | 8920 | gdb_byte *target_mem; |
939c61fa JK |
8921 | struct cleanup *cleanup; |
8922 | int retval = 0; | |
514f746b | 8923 | |
1cf4d951 PA |
8924 | addr = address; |
8925 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8926 | ||
8927 | /* Software breakpoints unsupported? */ | |
8928 | if (bpoint == NULL) | |
8929 | return 0; | |
8930 | ||
8931 | target_mem = alloca (len); | |
8932 | ||
8933 | /* Enable the automatic memory restoration from breakpoints while | |
8934 | we read the memory. Otherwise we could say about our temporary | |
8935 | breakpoints they are permanent. */ | |
8936 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
8937 | ||
8938 | if (target_read_memory (address, target_mem, len) == 0 | |
8939 | && memcmp (target_mem, bpoint, len) == 0) | |
8940 | retval = 1; | |
8941 | ||
8942 | do_cleanups (cleanup); | |
8943 | ||
8944 | return retval; | |
8945 | } | |
8946 | ||
8947 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8948 | return 0 otherwise. */ | |
8949 | ||
8950 | static int | |
8951 | bp_loc_is_permanent (struct bp_location *loc) | |
8952 | { | |
8953 | struct cleanup *cleanup; | |
8954 | int retval; | |
8955 | ||
514f746b AR |
8956 | gdb_assert (loc != NULL); |
8957 | ||
6c95b8df | 8958 | cleanup = save_current_space_and_thread (); |
6c95b8df | 8959 | switch_to_program_space_and_thread (loc->pspace); |
939c61fa | 8960 | |
1cf4d951 | 8961 | retval = program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b | 8962 | |
939c61fa JK |
8963 | do_cleanups (cleanup); |
8964 | ||
8965 | return retval; | |
514f746b AR |
8966 | } |
8967 | ||
e7e0cddf SS |
8968 | /* Build a command list for the dprintf corresponding to the current |
8969 | settings of the dprintf style options. */ | |
8970 | ||
8971 | static void | |
8972 | update_dprintf_command_list (struct breakpoint *b) | |
8973 | { | |
8974 | char *dprintf_args = b->extra_string; | |
8975 | char *printf_line = NULL; | |
8976 | ||
8977 | if (!dprintf_args) | |
8978 | return; | |
8979 | ||
8980 | dprintf_args = skip_spaces (dprintf_args); | |
8981 | ||
8982 | /* Allow a comma, as it may have terminated a location, but don't | |
8983 | insist on it. */ | |
8984 | if (*dprintf_args == ',') | |
8985 | ++dprintf_args; | |
8986 | dprintf_args = skip_spaces (dprintf_args); | |
8987 | ||
8988 | if (*dprintf_args != '"') | |
8989 | error (_("Bad format string, missing '\"'.")); | |
8990 | ||
d3ce09f5 | 8991 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8992 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8993 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8994 | { |
8995 | if (!dprintf_function) | |
8996 | error (_("No function supplied for dprintf call")); | |
8997 | ||
8998 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8999 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
9000 | dprintf_function, | |
9001 | dprintf_channel, | |
9002 | dprintf_args); | |
9003 | else | |
9004 | printf_line = xstrprintf ("call (void) %s (%s)", | |
9005 | dprintf_function, | |
9006 | dprintf_args); | |
9007 | } | |
d3ce09f5 SS |
9008 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
9009 | { | |
9010 | if (target_can_run_breakpoint_commands ()) | |
9011 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
9012 | else | |
9013 | { | |
9014 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
9015 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
9016 | } | |
9017 | } | |
e7e0cddf SS |
9018 | else |
9019 | internal_error (__FILE__, __LINE__, | |
9020 | _("Invalid dprintf style.")); | |
9021 | ||
f28045c2 | 9022 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 9023 | /* Manufacture a printf sequence. */ |
f28045c2 | 9024 | { |
9d6e6e84 HZ |
9025 | struct command_line *printf_cmd_line |
9026 | = xmalloc (sizeof (struct command_line)); | |
e7e0cddf | 9027 | |
f28045c2 YQ |
9028 | printf_cmd_line->control_type = simple_control; |
9029 | printf_cmd_line->body_count = 0; | |
9030 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 9031 | printf_cmd_line->next = NULL; |
f28045c2 | 9032 | printf_cmd_line->line = printf_line; |
e7e0cddf | 9033 | |
f28045c2 YQ |
9034 | breakpoint_set_commands (b, printf_cmd_line); |
9035 | } | |
e7e0cddf SS |
9036 | } |
9037 | ||
9038 | /* Update all dprintf commands, making their command lists reflect | |
9039 | current style settings. */ | |
9040 | ||
9041 | static void | |
9042 | update_dprintf_commands (char *args, int from_tty, | |
9043 | struct cmd_list_element *c) | |
9044 | { | |
9045 | struct breakpoint *b; | |
9046 | ||
9047 | ALL_BREAKPOINTS (b) | |
9048 | { | |
9049 | if (b->type == bp_dprintf) | |
9050 | update_dprintf_command_list (b); | |
9051 | } | |
9052 | } | |
c3f6f71d | 9053 | |
018d34a4 VP |
9054 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
9055 | as textual description of the location, and COND_STRING | |
db107f19 | 9056 | as condition expression. */ |
018d34a4 VP |
9057 | |
9058 | static void | |
d9b3f62e PA |
9059 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
9060 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9061 | char *filter, char *cond_string, |
e7e0cddf | 9062 | char *extra_string, |
d9b3f62e PA |
9063 | enum bptype type, enum bpdisp disposition, |
9064 | int thread, int task, int ignore_count, | |
c0a91b2b | 9065 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9066 | int enabled, int internal, unsigned flags, |
9067 | int display_canonical) | |
018d34a4 | 9068 | { |
0d381245 | 9069 | int i; |
018d34a4 VP |
9070 | |
9071 | if (type == bp_hardware_breakpoint) | |
9072 | { | |
fbbd034e AS |
9073 | int target_resources_ok; |
9074 | ||
9075 | i = hw_breakpoint_used_count (); | |
9076 | target_resources_ok = | |
9077 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9078 | i + 1, 0); |
9079 | if (target_resources_ok == 0) | |
9080 | error (_("No hardware breakpoint support in the target.")); | |
9081 | else if (target_resources_ok < 0) | |
9082 | error (_("Hardware breakpoints used exceeds limit.")); | |
9083 | } | |
9084 | ||
6c95b8df PA |
9085 | gdb_assert (sals.nelts > 0); |
9086 | ||
0d381245 VP |
9087 | for (i = 0; i < sals.nelts; ++i) |
9088 | { | |
9089 | struct symtab_and_line sal = sals.sals[i]; | |
9090 | struct bp_location *loc; | |
9091 | ||
9092 | if (from_tty) | |
5af949e3 UW |
9093 | { |
9094 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9095 | if (!loc_gdbarch) | |
9096 | loc_gdbarch = gdbarch; | |
9097 | ||
9098 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9099 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9100 | } |
0d381245 VP |
9101 | |
9102 | if (i == 0) | |
9103 | { | |
d9b3f62e | 9104 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9105 | b->thread = thread; |
4a306c9a | 9106 | b->task = task; |
855a6e68 | 9107 | |
0d381245 | 9108 | b->cond_string = cond_string; |
e7e0cddf | 9109 | b->extra_string = extra_string; |
0d381245 | 9110 | b->ignore_count = ignore_count; |
41447f92 | 9111 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9112 | b->disposition = disposition; |
6c95b8df | 9113 | |
44f238bb PA |
9114 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9115 | b->loc->inserted = 1; | |
9116 | ||
0fb4aa4b PA |
9117 | if (type == bp_static_tracepoint) |
9118 | { | |
d9b3f62e | 9119 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9120 | struct static_tracepoint_marker marker; |
9121 | ||
983af33b | 9122 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9123 | { |
9124 | /* We already know the marker exists, otherwise, we | |
9125 | wouldn't see a sal for it. */ | |
9126 | char *p = &addr_string[3]; | |
9127 | char *endp; | |
9128 | char *marker_str; | |
0fb4aa4b | 9129 | |
e9cafbcc | 9130 | p = skip_spaces (p); |
0fb4aa4b | 9131 | |
e9cafbcc | 9132 | endp = skip_to_space (p); |
0fb4aa4b PA |
9133 | |
9134 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9135 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9136 | |
3e43a32a MS |
9137 | printf_filtered (_("Probed static tracepoint " |
9138 | "marker \"%s\"\n"), | |
d9b3f62e | 9139 | t->static_trace_marker_id); |
0fb4aa4b PA |
9140 | } |
9141 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9142 | { | |
d9b3f62e | 9143 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9144 | release_static_tracepoint_marker (&marker); |
9145 | ||
3e43a32a MS |
9146 | printf_filtered (_("Probed static tracepoint " |
9147 | "marker \"%s\"\n"), | |
d9b3f62e | 9148 | t->static_trace_marker_id); |
0fb4aa4b PA |
9149 | } |
9150 | else | |
3e43a32a MS |
9151 | warning (_("Couldn't determine the static " |
9152 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9153 | } |
9154 | ||
0d381245 VP |
9155 | loc = b->loc; |
9156 | } | |
9157 | else | |
018d34a4 | 9158 | { |
39d61571 | 9159 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9160 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9161 | loc->inserted = 1; | |
0d381245 VP |
9162 | } |
9163 | ||
9164 | if (b->cond_string) | |
9165 | { | |
bbc13ae3 KS |
9166 | const char *arg = b->cond_string; |
9167 | ||
1bb9788d TT |
9168 | loc->cond = parse_exp_1 (&arg, loc->address, |
9169 | block_for_pc (loc->address), 0); | |
0d381245 | 9170 | if (*arg) |
588ae58c | 9171 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9172 | } |
e7e0cddf SS |
9173 | |
9174 | /* Dynamic printf requires and uses additional arguments on the | |
9175 | command line, otherwise it's an error. */ | |
9176 | if (type == bp_dprintf) | |
9177 | { | |
9178 | if (b->extra_string) | |
9179 | update_dprintf_command_list (b); | |
9180 | else | |
9181 | error (_("Format string required")); | |
9182 | } | |
9183 | else if (b->extra_string) | |
588ae58c | 9184 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9185 | } |
018d34a4 | 9186 | |
56435ebe | 9187 | b->display_canonical = display_canonical; |
018d34a4 VP |
9188 | if (addr_string) |
9189 | b->addr_string = addr_string; | |
9190 | else | |
9191 | /* addr_string has to be used or breakpoint_re_set will delete | |
9192 | me. */ | |
5af949e3 UW |
9193 | b->addr_string |
9194 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9195 | b->filter = filter; |
d9b3f62e | 9196 | } |
018d34a4 | 9197 | |
d9b3f62e PA |
9198 | static void |
9199 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9200 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9201 | char *filter, char *cond_string, |
e7e0cddf | 9202 | char *extra_string, |
d9b3f62e PA |
9203 | enum bptype type, enum bpdisp disposition, |
9204 | int thread, int task, int ignore_count, | |
c0a91b2b | 9205 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9206 | int enabled, int internal, unsigned flags, |
9207 | int display_canonical) | |
d9b3f62e PA |
9208 | { |
9209 | struct breakpoint *b; | |
9210 | struct cleanup *old_chain; | |
9211 | ||
9212 | if (is_tracepoint_type (type)) | |
9213 | { | |
9214 | struct tracepoint *t; | |
9215 | ||
9216 | t = XCNEW (struct tracepoint); | |
9217 | b = &t->base; | |
9218 | } | |
9219 | else | |
9220 | b = XNEW (struct breakpoint); | |
9221 | ||
9222 | old_chain = make_cleanup (xfree, b); | |
9223 | ||
9224 | init_breakpoint_sal (b, gdbarch, | |
9225 | sals, addr_string, | |
e7e0cddf | 9226 | filter, cond_string, extra_string, |
d9b3f62e PA |
9227 | type, disposition, |
9228 | thread, task, ignore_count, | |
9229 | ops, from_tty, | |
44f238bb PA |
9230 | enabled, internal, flags, |
9231 | display_canonical); | |
d9b3f62e PA |
9232 | discard_cleanups (old_chain); |
9233 | ||
3ea46bff | 9234 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9235 | } |
9236 | ||
9237 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9238 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9239 | value. COND_STRING, if not NULL, specified the condition to be | |
9240 | used for all breakpoints. Essentially the only case where | |
9241 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9242 | function. In that case, it's still not possible to specify | |
9243 | separate conditions for different overloaded functions, so | |
9244 | we take just a single condition string. | |
9245 | ||
c3f6f71d | 9246 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9247 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9248 | array contents). If the function fails (error() is called), the |
9249 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9250 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9251 | |
9252 | static void | |
8cdf0e15 | 9253 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9254 | struct linespec_result *canonical, |
e7e0cddf | 9255 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9256 | enum bptype type, enum bpdisp disposition, |
9257 | int thread, int task, int ignore_count, | |
c0a91b2b | 9258 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9259 | int enabled, int internal, unsigned flags) |
c906108c | 9260 | { |
018d34a4 | 9261 | int i; |
f8eba3c6 | 9262 | struct linespec_sals *lsal; |
cc59ec59 | 9263 | |
f8eba3c6 TT |
9264 | if (canonical->pre_expanded) |
9265 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9266 | ||
9267 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9268 | { |
f8eba3c6 TT |
9269 | /* Note that 'addr_string' can be NULL in the case of a plain |
9270 | 'break', without arguments. */ | |
9271 | char *addr_string = (canonical->addr_string | |
9272 | ? xstrdup (canonical->addr_string) | |
9273 | : NULL); | |
9274 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9275 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9276 | |
f8eba3c6 TT |
9277 | make_cleanup (xfree, filter_string); |
9278 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9279 | addr_string, | |
9280 | filter_string, | |
e7e0cddf SS |
9281 | cond_string, extra_string, |
9282 | type, disposition, | |
84f4c1fe | 9283 | thread, task, ignore_count, ops, |
44f238bb | 9284 | from_tty, enabled, internal, flags, |
56435ebe | 9285 | canonical->special_display); |
f8eba3c6 | 9286 | discard_cleanups (inner); |
c3f6f71d | 9287 | } |
c3f6f71d | 9288 | } |
c906108c | 9289 | |
9998af43 | 9290 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9291 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9292 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9293 | address strings. ADDRESS points to the end of the SAL. |
9294 | ||
9295 | The array and the line spec strings are allocated on the heap, it is | |
9296 | the caller's responsibility to free them. */ | |
c906108c | 9297 | |
b9362cc7 | 9298 | static void |
c3f6f71d | 9299 | parse_breakpoint_sals (char **address, |
58438ac1 | 9300 | struct linespec_result *canonical) |
c3f6f71d | 9301 | { |
c3f6f71d | 9302 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9303 | breakpoint. */ |
0578b14e | 9304 | if ((*address) == NULL || linespec_lexer_lex_keyword (*address)) |
c906108c | 9305 | { |
1bfeeb0f JL |
9306 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9307 | address. */ | |
9308 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9309 | { |
f8eba3c6 | 9310 | struct linespec_sals lsal; |
c3f6f71d | 9311 | struct symtab_and_line sal; |
1c8cdcb1 | 9312 | CORE_ADDR pc; |
cc59ec59 | 9313 | |
4a64f543 | 9314 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9315 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9316 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9317 | |
9318 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9319 | corresponding to the last call to print_frame_info. |
9320 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9321 | as the breakpoint line number is inappropriate otherwise. | |
9322 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9323 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9324 | pc = sal.pc; |
9325 | sal = find_pc_line (pc, 0); | |
00903456 | 9326 | |
4a64f543 | 9327 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9328 | where PC is the last displayed codepoint's address. So |
9329 | make sure to set sal.explicit_pc to prevent GDB from | |
9330 | trying to expand the list of sals to include all other | |
9331 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9332 | sal.pc = pc; |
00903456 JK |
9333 | sal.explicit_pc = 1; |
9334 | ||
f8eba3c6 TT |
9335 | lsal.sals.sals[0] = sal; |
9336 | lsal.sals.nelts = 1; | |
9337 | lsal.canonical = NULL; | |
9338 | ||
9339 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9340 | } |
9341 | else | |
8a3fe4f8 | 9342 | error (_("No default breakpoint address now.")); |
c906108c SS |
9343 | } |
9344 | else | |
9345 | { | |
cc80f267 JK |
9346 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9347 | ||
c906108c | 9348 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9349 | current_source_symtab (which is decode_line_1's default). |
9350 | This should produce the results we want almost all of the | |
cc80f267 JK |
9351 | time while leaving default_breakpoint_* alone. |
9352 | ||
9353 | ObjC: However, don't match an Objective-C method name which | |
9354 | may have a '+' or '-' succeeded by a '['. */ | |
9355 | if (last_displayed_sal_is_valid () | |
9356 | && (!cursal.symtab | |
9357 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9358 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9359 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9360 | get_last_displayed_symtab (), | |
9361 | get_last_displayed_line (), | |
9362 | canonical, NULL, NULL); | |
c906108c | 9363 | else |
f8eba3c6 | 9364 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9365 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9366 | } |
c3f6f71d | 9367 | } |
c906108c | 9368 | |
c906108c | 9369 | |
c3f6f71d | 9370 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9371 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9372 | |
b9362cc7 | 9373 | static void |
23e7acfb | 9374 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9375 | { |
9376 | int i; | |
cc59ec59 | 9377 | |
c3f6f71d | 9378 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9379 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9380 | } |
9381 | ||
7a697b8d SS |
9382 | /* Fast tracepoints may have restrictions on valid locations. For |
9383 | instance, a fast tracepoint using a jump instead of a trap will | |
9384 | likely have to overwrite more bytes than a trap would, and so can | |
9385 | only be placed where the instruction is longer than the jump, or a | |
9386 | multi-instruction sequence does not have a jump into the middle of | |
9387 | it, etc. */ | |
9388 | ||
9389 | static void | |
9390 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9391 | struct symtabs_and_lines *sals) | |
9392 | { | |
9393 | int i, rslt; | |
9394 | struct symtab_and_line *sal; | |
9395 | char *msg; | |
9396 | struct cleanup *old_chain; | |
9397 | ||
9398 | for (i = 0; i < sals->nelts; i++) | |
9399 | { | |
f8eba3c6 TT |
9400 | struct gdbarch *sarch; |
9401 | ||
7a697b8d SS |
9402 | sal = &sals->sals[i]; |
9403 | ||
f8eba3c6 TT |
9404 | sarch = get_sal_arch (*sal); |
9405 | /* We fall back to GDBARCH if there is no architecture | |
9406 | associated with SAL. */ | |
9407 | if (sarch == NULL) | |
9408 | sarch = gdbarch; | |
9409 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9410 | NULL, &msg); |
9411 | old_chain = make_cleanup (xfree, msg); | |
9412 | ||
9413 | if (!rslt) | |
9414 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9415 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9416 | |
9417 | do_cleanups (old_chain); | |
9418 | } | |
9419 | } | |
9420 | ||
af4908ba KS |
9421 | /* Issue an invalid thread ID error. */ |
9422 | ||
9423 | static void ATTRIBUTE_NORETURN | |
9424 | invalid_thread_id_error (int id) | |
9425 | { | |
9426 | error (_("Unknown thread %d."), id); | |
9427 | } | |
9428 | ||
018d34a4 VP |
9429 | /* Given TOK, a string specification of condition and thread, as |
9430 | accepted by the 'break' command, extract the condition | |
9431 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9432 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9433 | If no condition is found, *COND_STRING is set to NULL. |
9434 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9435 | |
9436 | static void | |
bbc13ae3 | 9437 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9438 | char **cond_string, int *thread, int *task, |
9439 | char **rest) | |
018d34a4 VP |
9440 | { |
9441 | *cond_string = NULL; | |
9442 | *thread = -1; | |
ed1d1739 KS |
9443 | *task = 0; |
9444 | *rest = NULL; | |
9445 | ||
018d34a4 VP |
9446 | while (tok && *tok) |
9447 | { | |
bbc13ae3 | 9448 | const char *end_tok; |
018d34a4 | 9449 | int toklen; |
bbc13ae3 KS |
9450 | const char *cond_start = NULL; |
9451 | const char *cond_end = NULL; | |
cc59ec59 | 9452 | |
bbc13ae3 | 9453 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9454 | |
9455 | if ((*tok == '"' || *tok == ',') && rest) | |
9456 | { | |
9457 | *rest = savestring (tok, strlen (tok)); | |
9458 | return; | |
9459 | } | |
9460 | ||
bbc13ae3 | 9461 | end_tok = skip_to_space_const (tok); |
d634f2de | 9462 | |
018d34a4 | 9463 | toklen = end_tok - tok; |
d634f2de | 9464 | |
018d34a4 VP |
9465 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9466 | { | |
f7545552 TT |
9467 | struct expression *expr; |
9468 | ||
018d34a4 | 9469 | tok = cond_start = end_tok + 1; |
1bb9788d | 9470 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9471 | xfree (expr); |
018d34a4 | 9472 | cond_end = tok; |
d634f2de | 9473 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9474 | } |
9475 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9476 | { | |
9477 | char *tmptok; | |
d634f2de | 9478 | |
018d34a4 | 9479 | tok = end_tok + 1; |
bbc13ae3 | 9480 | *thread = strtol (tok, &tmptok, 0); |
018d34a4 VP |
9481 | if (tok == tmptok) |
9482 | error (_("Junk after thread keyword.")); | |
9483 | if (!valid_thread_id (*thread)) | |
af4908ba | 9484 | invalid_thread_id_error (*thread); |
bbc13ae3 | 9485 | tok = tmptok; |
018d34a4 | 9486 | } |
4a306c9a JB |
9487 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9488 | { | |
9489 | char *tmptok; | |
9490 | ||
9491 | tok = end_tok + 1; | |
bbc13ae3 | 9492 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9493 | if (tok == tmptok) |
9494 | error (_("Junk after task keyword.")); | |
9495 | if (!valid_task_id (*task)) | |
b6199126 | 9496 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9497 | tok = tmptok; |
4a306c9a | 9498 | } |
e7e0cddf SS |
9499 | else if (rest) |
9500 | { | |
9501 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9502 | return; |
e7e0cddf | 9503 | } |
018d34a4 VP |
9504 | else |
9505 | error (_("Junk at end of arguments.")); | |
9506 | } | |
9507 | } | |
9508 | ||
0fb4aa4b PA |
9509 | /* Decode a static tracepoint marker spec. */ |
9510 | ||
9511 | static struct symtabs_and_lines | |
9512 | decode_static_tracepoint_spec (char **arg_p) | |
9513 | { | |
9514 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9515 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9516 | struct cleanup *old_chain; |
9517 | char *p = &(*arg_p)[3]; | |
9518 | char *endp; | |
9519 | char *marker_str; | |
9520 | int i; | |
9521 | ||
e9cafbcc | 9522 | p = skip_spaces (p); |
0fb4aa4b | 9523 | |
e9cafbcc | 9524 | endp = skip_to_space (p); |
0fb4aa4b PA |
9525 | |
9526 | marker_str = savestring (p, endp - p); | |
9527 | old_chain = make_cleanup (xfree, marker_str); | |
9528 | ||
9529 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9530 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9531 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9532 | ||
9533 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9534 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9535 | ||
9536 | for (i = 0; i < sals.nelts; i++) | |
9537 | { | |
9538 | struct static_tracepoint_marker *marker; | |
9539 | ||
9540 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9541 | ||
9542 | init_sal (&sals.sals[i]); | |
9543 | ||
9544 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9545 | sals.sals[i].pc = marker->address; | |
9546 | ||
9547 | release_static_tracepoint_marker (marker); | |
9548 | } | |
9549 | ||
9550 | do_cleanups (old_chain); | |
9551 | ||
9552 | *arg_p = endp; | |
9553 | return sals; | |
9554 | } | |
9555 | ||
fd9b8c24 PA |
9556 | /* Set a breakpoint. This function is shared between CLI and MI |
9557 | functions for setting a breakpoint. This function has two major | |
f6de8ec2 PA |
9558 | modes of operations, selected by the PARSE_ARG parameter. If |
9559 | non-zero, the function will parse ARG, extracting location, | |
9560 | condition, thread and extra string. Otherwise, ARG is just the | |
9561 | breakpoint's location, with condition, thread, and extra string | |
9562 | specified by the COND_STRING, THREAD and EXTRA_STRING parameters. | |
9563 | If INTERNAL is non-zero, the breakpoint number will be allocated | |
9564 | from the internal breakpoint count. Returns true if any breakpoint | |
9565 | was created; false otherwise. */ | |
0101ce28 | 9566 | |
8cdf0e15 VP |
9567 | int |
9568 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9569 | char *arg, char *cond_string, |
9570 | int thread, char *extra_string, | |
f6de8ec2 | 9571 | int parse_arg, |
0fb4aa4b | 9572 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9573 | int ignore_count, |
9574 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9575 | const struct breakpoint_ops *ops, |
44f238bb PA |
9576 | int from_tty, int enabled, int internal, |
9577 | unsigned flags) | |
c3f6f71d | 9578 | { |
f8eba3c6 | 9579 | char *copy_arg = NULL; |
c3f6f71d | 9580 | char *addr_start = arg; |
7efd8fc2 | 9581 | struct linespec_result canonical; |
c3f6f71d | 9582 | struct cleanup *old_chain; |
80c99de1 | 9583 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9584 | int pending = 0; |
4a306c9a | 9585 | int task = 0; |
86b17b60 | 9586 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9587 | |
348d480f PA |
9588 | gdb_assert (ops != NULL); |
9589 | ||
7efd8fc2 | 9590 | init_linespec_result (&canonical); |
c3f6f71d | 9591 | |
492d29ea | 9592 | TRY |
b78a6381 | 9593 | { |
983af33b SDJ |
9594 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9595 | addr_start, ©_arg); | |
b78a6381 | 9596 | } |
492d29ea | 9597 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9598 | { |
492d29ea PA |
9599 | /* If caller is interested in rc value from parse, set |
9600 | value. */ | |
9601 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9602 | { |
05ff989b AC |
9603 | /* If pending breakpoint support is turned off, throw |
9604 | error. */ | |
fa8d40ab JJ |
9605 | |
9606 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9607 | throw_exception (e); |
9608 | ||
9609 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9610 | |
05ff989b AC |
9611 | /* If pending breakpoint support is auto query and the user |
9612 | selects no, then simply return the error code. */ | |
059fb39f | 9613 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9614 | && !nquery (_("Make %s pending on future shared library load? "), |
9615 | bptype_string (type_wanted))) | |
fd9b8c24 | 9616 | return 0; |
fa8d40ab | 9617 | |
05ff989b AC |
9618 | /* At this point, either the user was queried about setting |
9619 | a pending breakpoint and selected yes, or pending | |
9620 | breakpoint behavior is on and thus a pending breakpoint | |
9621 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9622 | { |
9623 | struct linespec_sals lsal; | |
9624 | ||
9625 | copy_arg = xstrdup (addr_start); | |
9626 | lsal.canonical = xstrdup (copy_arg); | |
9627 | lsal.sals.nelts = 1; | |
9628 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9629 | init_sal (&lsal.sals.sals[0]); | |
9630 | pending = 1; | |
9631 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9632 | } | |
0101ce28 | 9633 | } |
492d29ea PA |
9634 | else |
9635 | throw_exception (e); | |
0101ce28 | 9636 | } |
492d29ea PA |
9637 | END_CATCH |
9638 | ||
9639 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9640 | return 0; | |
c3f6f71d | 9641 | |
4a64f543 | 9642 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9643 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9644 | |
c3f6f71d JM |
9645 | /* ----------------------------- SNIP ----------------------------- |
9646 | Anything added to the cleanup chain beyond this point is assumed | |
9647 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9648 | then the memory is not reclaimed. */ |
9649 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9650 | |
c3f6f71d JM |
9651 | /* Resolve all line numbers to PC's and verify that the addresses |
9652 | are ok for the target. */ | |
0101ce28 | 9653 | if (!pending) |
f8eba3c6 TT |
9654 | { |
9655 | int ix; | |
9656 | struct linespec_sals *iter; | |
9657 | ||
9658 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9659 | breakpoint_sals_to_pc (&iter->sals); | |
9660 | } | |
c3f6f71d | 9661 | |
7a697b8d | 9662 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9663 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9664 | { |
9665 | int ix; | |
9666 | struct linespec_sals *iter; | |
9667 | ||
9668 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9669 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9670 | } | |
7a697b8d | 9671 | |
c3f6f71d JM |
9672 | /* Verify that condition can be parsed, before setting any |
9673 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9674 | breakpoint. */ |
0101ce28 | 9675 | if (!pending) |
c3f6f71d | 9676 | { |
f6de8ec2 | 9677 | if (parse_arg) |
72b2ff0e | 9678 | { |
0878d0fa | 9679 | char *rest; |
52d361e1 YQ |
9680 | struct linespec_sals *lsal; |
9681 | ||
9682 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9683 | ||
0878d0fa YQ |
9684 | /* Here we only parse 'arg' to separate condition |
9685 | from thread number, so parsing in context of first | |
9686 | sal is OK. When setting the breakpoint we'll | |
9687 | re-parse it in context of each sal. */ | |
9688 | ||
9689 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, | |
9690 | &thread, &task, &rest); | |
9691 | if (cond_string) | |
9692 | make_cleanup (xfree, cond_string); | |
9693 | if (rest) | |
9694 | make_cleanup (xfree, rest); | |
9695 | if (rest) | |
9696 | extra_string = rest; | |
72b2ff0e | 9697 | } |
2f069f6f | 9698 | else |
72b2ff0e | 9699 | { |
0878d0fa YQ |
9700 | if (*arg != '\0') |
9701 | error (_("Garbage '%s' at end of location"), arg); | |
9702 | ||
9703 | /* Create a private copy of condition string. */ | |
9704 | if (cond_string) | |
9705 | { | |
9706 | cond_string = xstrdup (cond_string); | |
9707 | make_cleanup (xfree, cond_string); | |
9708 | } | |
9709 | /* Create a private copy of any extra string. */ | |
9710 | if (extra_string) | |
9711 | { | |
9712 | extra_string = xstrdup (extra_string); | |
9713 | make_cleanup (xfree, extra_string); | |
9714 | } | |
72b2ff0e | 9715 | } |
0fb4aa4b | 9716 | |
52d361e1 | 9717 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e7e0cddf | 9718 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9719 | tempflag ? disp_del : disp_donttouch, |
9720 | thread, task, ignore_count, ops, | |
44f238bb | 9721 | from_tty, enabled, internal, flags); |
c906108c | 9722 | } |
0101ce28 JJ |
9723 | else |
9724 | { | |
0101ce28 JJ |
9725 | struct breakpoint *b; |
9726 | ||
0101ce28 JJ |
9727 | make_cleanup (xfree, copy_arg); |
9728 | ||
bfccc43c YQ |
9729 | if (is_tracepoint_type (type_wanted)) |
9730 | { | |
9731 | struct tracepoint *t; | |
9732 | ||
9733 | t = XCNEW (struct tracepoint); | |
9734 | b = &t->base; | |
9735 | } | |
9736 | else | |
9737 | b = XNEW (struct breakpoint); | |
9738 | ||
9739 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9740 | ||
f8eba3c6 | 9741 | b->addr_string = copy_arg; |
f6de8ec2 | 9742 | if (parse_arg) |
98aa42ee AT |
9743 | { |
9744 | b->cond_string = NULL; | |
9745 | b->extra_string = NULL; | |
9746 | } | |
e12c7713 MK |
9747 | else |
9748 | { | |
9749 | /* Create a private copy of condition string. */ | |
9750 | if (cond_string) | |
9751 | { | |
9752 | cond_string = xstrdup (cond_string); | |
9753 | make_cleanup (xfree, cond_string); | |
9754 | } | |
98aa42ee AT |
9755 | /* Create a private copy of any extra string. */ |
9756 | if (extra_string != NULL) | |
9757 | { | |
9758 | extra_string = xstrdup (extra_string); | |
9759 | make_cleanup (xfree, extra_string); | |
9760 | } | |
e12c7713 | 9761 | b->cond_string = cond_string; |
98aa42ee | 9762 | b->extra_string = extra_string; |
15630549 | 9763 | b->thread = thread; |
e12c7713 | 9764 | } |
0101ce28 | 9765 | b->ignore_count = ignore_count; |
0101ce28 | 9766 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9767 | b->condition_not_parsed = 1; |
41447f92 | 9768 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9769 | if ((type_wanted != bp_breakpoint |
9770 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9771 | b->pspace = current_program_space; |
8bea4e01 | 9772 | |
bfccc43c | 9773 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9774 | } |
9775 | ||
f8eba3c6 | 9776 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9777 | { |
3e43a32a MS |
9778 | warning (_("Multiple breakpoints were set.\nUse the " |
9779 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9780 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9781 | } |
9782 | ||
80c99de1 PA |
9783 | /* That's it. Discard the cleanups for data inserted into the |
9784 | breakpoint. */ | |
9785 | discard_cleanups (bkpt_chain); | |
9786 | /* But cleanup everything else. */ | |
c3f6f71d | 9787 | do_cleanups (old_chain); |
217dc9e2 | 9788 | |
80c99de1 | 9789 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9790 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9791 | |
9792 | return 1; | |
c3f6f71d | 9793 | } |
c906108c | 9794 | |
348d480f | 9795 | /* Set a breakpoint. |
72b2ff0e VP |
9796 | ARG is a string describing breakpoint address, |
9797 | condition, and thread. | |
9798 | FLAG specifies if a breakpoint is hardware on, | |
9799 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9800 | and BP_TEMPFLAG. */ | |
348d480f | 9801 | |
98deb0da | 9802 | static void |
72b2ff0e | 9803 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9804 | { |
72b2ff0e | 9805 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9806 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9807 | ? bp_hardware_breakpoint | |
9808 | : bp_breakpoint); | |
55aa24fb SDJ |
9809 | struct breakpoint_ops *ops; |
9810 | const char *arg_cp = arg; | |
9811 | ||
9812 | /* Matching breakpoints on probes. */ | |
9813 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9814 | ops = &bkpt_probe_breakpoint_ops; | |
9815 | else | |
9816 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9817 | |
8cdf0e15 VP |
9818 | create_breakpoint (get_current_arch (), |
9819 | arg, | |
e7e0cddf | 9820 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9821 | tempflag, type_wanted, |
8cdf0e15 VP |
9822 | 0 /* Ignore count */, |
9823 | pending_break_support, | |
55aa24fb | 9824 | ops, |
8cdf0e15 | 9825 | from_tty, |
84f4c1fe | 9826 | 1 /* enabled */, |
44f238bb PA |
9827 | 0 /* internal */, |
9828 | 0); | |
c906108c SS |
9829 | } |
9830 | ||
c906108c SS |
9831 | /* Helper function for break_command_1 and disassemble_command. */ |
9832 | ||
9833 | void | |
fba45db2 | 9834 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9835 | { |
9836 | CORE_ADDR pc; | |
9837 | ||
9838 | if (sal->pc == 0 && sal->symtab != NULL) | |
9839 | { | |
9840 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9841 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9842 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9843 | sal->pc = pc; |
6a048695 | 9844 | |
4a64f543 MS |
9845 | /* If this SAL corresponds to a breakpoint inserted using a line |
9846 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9847 | if (sal->explicit_line) |
059acae7 | 9848 | skip_prologue_sal (sal); |
c906108c SS |
9849 | } |
9850 | ||
9851 | if (sal->section == 0 && sal->symtab != NULL) | |
9852 | { | |
346d1dfe | 9853 | const struct blockvector *bv; |
3977b71f | 9854 | const struct block *b; |
c5aa993b | 9855 | struct symbol *sym; |
c906108c | 9856 | |
43f3e411 DE |
9857 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9858 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9859 | if (bv != NULL) |
9860 | { | |
7f0df278 | 9861 | sym = block_linkage_function (b); |
c906108c SS |
9862 | if (sym != NULL) |
9863 | { | |
eb822aa6 DE |
9864 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9865 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9866 | sym); | |
c906108c SS |
9867 | } |
9868 | else | |
9869 | { | |
4a64f543 MS |
9870 | /* It really is worthwhile to have the section, so we'll |
9871 | just have to look harder. This case can be executed | |
9872 | if we have line numbers but no functions (as can | |
9873 | happen in assembly source). */ | |
c906108c | 9874 | |
7cbd4a93 | 9875 | struct bound_minimal_symbol msym; |
6c95b8df PA |
9876 | struct cleanup *old_chain = save_current_space_and_thread (); |
9877 | ||
9878 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9879 | |
9880 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7cbd4a93 | 9881 | if (msym.minsym) |
efd66ac6 | 9882 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
6c95b8df PA |
9883 | |
9884 | do_cleanups (old_chain); | |
c906108c SS |
9885 | } |
9886 | } | |
9887 | } | |
9888 | } | |
9889 | ||
9890 | void | |
fba45db2 | 9891 | break_command (char *arg, int from_tty) |
c906108c | 9892 | { |
db107f19 | 9893 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9894 | } |
9895 | ||
c906108c | 9896 | void |
fba45db2 | 9897 | tbreak_command (char *arg, int from_tty) |
c906108c | 9898 | { |
db107f19 | 9899 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9900 | } |
9901 | ||
c906108c | 9902 | static void |
fba45db2 | 9903 | hbreak_command (char *arg, int from_tty) |
c906108c | 9904 | { |
db107f19 | 9905 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9906 | } |
9907 | ||
9908 | static void | |
fba45db2 | 9909 | thbreak_command (char *arg, int from_tty) |
c906108c | 9910 | { |
db107f19 | 9911 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9912 | } |
9913 | ||
9914 | static void | |
fba45db2 | 9915 | stop_command (char *arg, int from_tty) |
c906108c | 9916 | { |
a3f17187 | 9917 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9918 | Usage: stop in <function | address>\n\ |
a3f17187 | 9919 | stop at <line>\n")); |
c906108c SS |
9920 | } |
9921 | ||
9922 | static void | |
fba45db2 | 9923 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9924 | { |
9925 | int badInput = 0; | |
9926 | ||
c5aa993b | 9927 | if (arg == (char *) NULL) |
c906108c SS |
9928 | badInput = 1; |
9929 | else if (*arg != '*') | |
9930 | { | |
9931 | char *argptr = arg; | |
9932 | int hasColon = 0; | |
9933 | ||
4a64f543 | 9934 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9935 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9936 | function/method name. */ |
c906108c | 9937 | while (*argptr && !hasColon) |
c5aa993b JM |
9938 | { |
9939 | hasColon = (*argptr == ':'); | |
9940 | argptr++; | |
9941 | } | |
c906108c SS |
9942 | |
9943 | if (hasColon) | |
c5aa993b | 9944 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9945 | else |
c5aa993b | 9946 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9947 | } |
9948 | ||
9949 | if (badInput) | |
a3f17187 | 9950 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9951 | else |
db107f19 | 9952 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9953 | } |
9954 | ||
9955 | static void | |
fba45db2 | 9956 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9957 | { |
9958 | int badInput = 0; | |
9959 | ||
c5aa993b | 9960 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9961 | badInput = 1; |
9962 | else | |
9963 | { | |
9964 | char *argptr = arg; | |
9965 | int hasColon = 0; | |
9966 | ||
4a64f543 MS |
9967 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9968 | it is probably a line number. */ | |
c906108c | 9969 | while (*argptr && !hasColon) |
c5aa993b JM |
9970 | { |
9971 | hasColon = (*argptr == ':'); | |
9972 | argptr++; | |
9973 | } | |
c906108c SS |
9974 | |
9975 | if (hasColon) | |
c5aa993b | 9976 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9977 | else |
c5aa993b | 9978 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9979 | } |
9980 | ||
9981 | if (badInput) | |
a3f17187 | 9982 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9983 | else |
db107f19 | 9984 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9985 | } |
9986 | ||
e7e0cddf SS |
9987 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9988 | with a prewired command list consisting of a single output command, | |
9989 | built from extra arguments supplied on the dprintf command | |
9990 | line. */ | |
9991 | ||
da821c7b | 9992 | static void |
e7e0cddf SS |
9993 | dprintf_command (char *arg, int from_tty) |
9994 | { | |
9995 | create_breakpoint (get_current_arch (), | |
9996 | arg, | |
9997 | NULL, 0, NULL, 1 /* parse arg */, | |
9998 | 0, bp_dprintf, | |
9999 | 0 /* Ignore count */, | |
10000 | pending_break_support, | |
10001 | &dprintf_breakpoint_ops, | |
10002 | from_tty, | |
10003 | 1 /* enabled */, | |
10004 | 0 /* internal */, | |
10005 | 0); | |
10006 | } | |
10007 | ||
d3ce09f5 SS |
10008 | static void |
10009 | agent_printf_command (char *arg, int from_tty) | |
10010 | { | |
10011 | error (_("May only run agent-printf on the target")); | |
10012 | } | |
10013 | ||
f1310107 TJB |
10014 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
10015 | ranged breakpoints. */ | |
10016 | ||
10017 | static int | |
10018 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
10019 | struct address_space *aspace, | |
09ac7c10 TT |
10020 | CORE_ADDR bp_addr, |
10021 | const struct target_waitstatus *ws) | |
f1310107 | 10022 | { |
09ac7c10 | 10023 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 10024 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
10025 | return 0; |
10026 | ||
f1310107 TJB |
10027 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
10028 | bl->length, aspace, bp_addr); | |
10029 | } | |
10030 | ||
10031 | /* Implement the "resources_needed" breakpoint_ops method for | |
10032 | ranged breakpoints. */ | |
10033 | ||
10034 | static int | |
10035 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
10036 | { | |
10037 | return target_ranged_break_num_registers (); | |
10038 | } | |
10039 | ||
10040 | /* Implement the "print_it" breakpoint_ops method for | |
10041 | ranged breakpoints. */ | |
10042 | ||
10043 | static enum print_stop_action | |
348d480f | 10044 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 10045 | { |
348d480f | 10046 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 10047 | struct bp_location *bl = b->loc; |
79a45e25 | 10048 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10049 | |
10050 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10051 | ||
10052 | /* Ranged breakpoints have only one location. */ | |
10053 | gdb_assert (bl && bl->next == NULL); | |
10054 | ||
10055 | annotate_breakpoint (b->number); | |
10056 | if (b->disposition == disp_del) | |
10057 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
10058 | else | |
10059 | ui_out_text (uiout, "\nRanged breakpoint "); | |
10060 | if (ui_out_is_mi_like_p (uiout)) | |
10061 | { | |
10062 | ui_out_field_string (uiout, "reason", | |
10063 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
10064 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
10065 | } | |
10066 | ui_out_field_int (uiout, "bkptno", b->number); | |
10067 | ui_out_text (uiout, ", "); | |
10068 | ||
10069 | return PRINT_SRC_AND_LOC; | |
10070 | } | |
10071 | ||
10072 | /* Implement the "print_one" breakpoint_ops method for | |
10073 | ranged breakpoints. */ | |
10074 | ||
10075 | static void | |
10076 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10077 | struct bp_location **last_loc) | |
10078 | { | |
10079 | struct bp_location *bl = b->loc; | |
10080 | struct value_print_options opts; | |
79a45e25 | 10081 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10082 | |
10083 | /* Ranged breakpoints have only one location. */ | |
10084 | gdb_assert (bl && bl->next == NULL); | |
10085 | ||
10086 | get_user_print_options (&opts); | |
10087 | ||
10088 | if (opts.addressprint) | |
10089 | /* We don't print the address range here, it will be printed later | |
10090 | by print_one_detail_ranged_breakpoint. */ | |
10091 | ui_out_field_skip (uiout, "addr"); | |
10092 | annotate_field (5); | |
10093 | print_breakpoint_location (b, bl); | |
10094 | *last_loc = bl; | |
10095 | } | |
10096 | ||
10097 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10098 | ranged breakpoints. */ | |
10099 | ||
10100 | static void | |
10101 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10102 | struct ui_out *uiout) | |
10103 | { | |
10104 | CORE_ADDR address_start, address_end; | |
10105 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10106 | struct ui_file *stb = mem_fileopen (); |
10107 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10108 | |
10109 | gdb_assert (bl); | |
10110 | ||
10111 | address_start = bl->address; | |
10112 | address_end = address_start + bl->length - 1; | |
10113 | ||
10114 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10115 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10116 | print_core_address (bl->gdbarch, address_start), |
10117 | print_core_address (bl->gdbarch, address_end)); | |
10118 | ui_out_field_stream (uiout, "addr", stb); | |
10119 | ui_out_text (uiout, "\n"); | |
10120 | ||
10121 | do_cleanups (cleanup); | |
10122 | } | |
10123 | ||
10124 | /* Implement the "print_mention" breakpoint_ops method for | |
10125 | ranged breakpoints. */ | |
10126 | ||
10127 | static void | |
10128 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10129 | { | |
10130 | struct bp_location *bl = b->loc; | |
79a45e25 | 10131 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10132 | |
10133 | gdb_assert (bl); | |
10134 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10135 | ||
10136 | if (ui_out_is_mi_like_p (uiout)) | |
10137 | return; | |
10138 | ||
10139 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10140 | b->number, paddress (bl->gdbarch, bl->address), | |
10141 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10142 | } | |
10143 | ||
10144 | /* Implement the "print_recreate" breakpoint_ops method for | |
10145 | ranged breakpoints. */ | |
10146 | ||
10147 | static void | |
10148 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10149 | { | |
10150 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
10151 | b->addr_string_range_end); | |
d9b3f62e | 10152 | print_recreate_thread (b, fp); |
f1310107 TJB |
10153 | } |
10154 | ||
10155 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10156 | ||
2060206e | 10157 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10158 | |
10159 | /* Find the address where the end of the breakpoint range should be | |
10160 | placed, given the SAL of the end of the range. This is so that if | |
10161 | the user provides a line number, the end of the range is set to the | |
10162 | last instruction of the given line. */ | |
10163 | ||
10164 | static CORE_ADDR | |
10165 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10166 | { | |
10167 | CORE_ADDR end; | |
10168 | ||
10169 | /* If the user provided a PC value, use it. Otherwise, | |
10170 | find the address of the end of the given location. */ | |
10171 | if (sal.explicit_pc) | |
10172 | end = sal.pc; | |
10173 | else | |
10174 | { | |
10175 | int ret; | |
10176 | CORE_ADDR start; | |
10177 | ||
10178 | ret = find_line_pc_range (sal, &start, &end); | |
10179 | if (!ret) | |
10180 | error (_("Could not find location of the end of the range.")); | |
10181 | ||
10182 | /* find_line_pc_range returns the start of the next line. */ | |
10183 | end--; | |
10184 | } | |
10185 | ||
10186 | return end; | |
10187 | } | |
10188 | ||
10189 | /* Implement the "break-range" CLI command. */ | |
10190 | ||
10191 | static void | |
10192 | break_range_command (char *arg, int from_tty) | |
10193 | { | |
10194 | char *arg_start, *addr_string_start, *addr_string_end; | |
10195 | struct linespec_result canonical_start, canonical_end; | |
10196 | int bp_count, can_use_bp, length; | |
10197 | CORE_ADDR end; | |
10198 | struct breakpoint *b; | |
10199 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10200 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10201 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10202 | |
10203 | /* We don't support software ranged breakpoints. */ | |
10204 | if (target_ranged_break_num_registers () < 0) | |
10205 | error (_("This target does not support hardware ranged breakpoints.")); | |
10206 | ||
10207 | bp_count = hw_breakpoint_used_count (); | |
10208 | bp_count += target_ranged_break_num_registers (); | |
10209 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10210 | bp_count, 0); | |
10211 | if (can_use_bp < 0) | |
10212 | error (_("Hardware breakpoints used exceeds limit.")); | |
10213 | ||
f8eba3c6 | 10214 | arg = skip_spaces (arg); |
f1310107 TJB |
10215 | if (arg == NULL || arg[0] == '\0') |
10216 | error(_("No address range specified.")); | |
10217 | ||
f1310107 TJB |
10218 | init_linespec_result (&canonical_start); |
10219 | ||
f8eba3c6 TT |
10220 | arg_start = arg; |
10221 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10222 | |
f8eba3c6 | 10223 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10224 | |
10225 | if (arg[0] != ',') | |
10226 | error (_("Too few arguments.")); | |
f8eba3c6 | 10227 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10228 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10229 | |
10230 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10231 | ||
10232 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10233 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10234 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10235 | ||
f8eba3c6 TT |
10236 | sal_start = lsal_start->sals.sals[0]; |
10237 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10238 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10239 | |
10240 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10241 | arg = skip_spaces (arg); |
f1310107 TJB |
10242 | |
10243 | /* Parse the end location. */ | |
10244 | ||
f1310107 TJB |
10245 | init_linespec_result (&canonical_end); |
10246 | arg_start = arg; | |
10247 | ||
f8eba3c6 | 10248 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10249 | parse_breakpoint_sals because we need to specify the start location's |
10250 | symtab and line as the default symtab and line for the end of the | |
10251 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10252 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10253 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10254 | sal_start.symtab, sal_start.line, | |
10255 | &canonical_end, NULL, NULL); | |
10256 | ||
10257 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10258 | |
f8eba3c6 | 10259 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10260 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10261 | |
10262 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10263 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10264 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10265 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10266 | ||
f8eba3c6 TT |
10267 | sal_end = lsal_end->sals.sals[0]; |
10268 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10269 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10270 | |
10271 | end = find_breakpoint_range_end (sal_end); | |
10272 | if (sal_start.pc > end) | |
177b42fe | 10273 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10274 | |
10275 | length = end - sal_start.pc + 1; | |
10276 | if (length < 0) | |
10277 | /* Length overflowed. */ | |
10278 | error (_("Address range too large.")); | |
10279 | else if (length == 1) | |
10280 | { | |
10281 | /* This range is simple enough to be handled by | |
10282 | the `hbreak' command. */ | |
10283 | hbreak_command (addr_string_start, 1); | |
10284 | ||
10285 | do_cleanups (cleanup_bkpt); | |
10286 | ||
10287 | return; | |
10288 | } | |
10289 | ||
10290 | /* Now set up the breakpoint. */ | |
10291 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10292 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10293 | set_breakpoint_count (breakpoint_count + 1); |
10294 | b->number = breakpoint_count; | |
10295 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10296 | b->addr_string = xstrdup (addr_string_start); |
10297 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10298 | b->loc->length = length; |
10299 | ||
f8eba3c6 | 10300 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10301 | |
10302 | mention (b); | |
8d3788bd | 10303 | observer_notify_breakpoint_created (b); |
44702360 | 10304 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10305 | } |
10306 | ||
4a64f543 MS |
10307 | /* Return non-zero if EXP is verified as constant. Returned zero |
10308 | means EXP is variable. Also the constant detection may fail for | |
10309 | some constant expressions and in such case still falsely return | |
10310 | zero. */ | |
2e6e3d9c | 10311 | |
65d79d4b SDJ |
10312 | static int |
10313 | watchpoint_exp_is_const (const struct expression *exp) | |
10314 | { | |
10315 | int i = exp->nelts; | |
10316 | ||
10317 | while (i > 0) | |
10318 | { | |
10319 | int oplenp, argsp; | |
10320 | ||
10321 | /* We are only interested in the descriptor of each element. */ | |
10322 | operator_length (exp, i, &oplenp, &argsp); | |
10323 | i -= oplenp; | |
10324 | ||
10325 | switch (exp->elts[i].opcode) | |
10326 | { | |
10327 | case BINOP_ADD: | |
10328 | case BINOP_SUB: | |
10329 | case BINOP_MUL: | |
10330 | case BINOP_DIV: | |
10331 | case BINOP_REM: | |
10332 | case BINOP_MOD: | |
10333 | case BINOP_LSH: | |
10334 | case BINOP_RSH: | |
10335 | case BINOP_LOGICAL_AND: | |
10336 | case BINOP_LOGICAL_OR: | |
10337 | case BINOP_BITWISE_AND: | |
10338 | case BINOP_BITWISE_IOR: | |
10339 | case BINOP_BITWISE_XOR: | |
10340 | case BINOP_EQUAL: | |
10341 | case BINOP_NOTEQUAL: | |
10342 | case BINOP_LESS: | |
10343 | case BINOP_GTR: | |
10344 | case BINOP_LEQ: | |
10345 | case BINOP_GEQ: | |
10346 | case BINOP_REPEAT: | |
10347 | case BINOP_COMMA: | |
10348 | case BINOP_EXP: | |
10349 | case BINOP_MIN: | |
10350 | case BINOP_MAX: | |
10351 | case BINOP_INTDIV: | |
10352 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10353 | case TERNOP_COND: |
10354 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10355 | |
10356 | case OP_LONG: | |
10357 | case OP_DOUBLE: | |
10358 | case OP_DECFLOAT: | |
10359 | case OP_LAST: | |
10360 | case OP_COMPLEX: | |
10361 | case OP_STRING: | |
65d79d4b SDJ |
10362 | case OP_ARRAY: |
10363 | case OP_TYPE: | |
608b4967 TT |
10364 | case OP_TYPEOF: |
10365 | case OP_DECLTYPE: | |
6e72ca20 | 10366 | case OP_TYPEID: |
65d79d4b SDJ |
10367 | case OP_NAME: |
10368 | case OP_OBJC_NSSTRING: | |
10369 | ||
10370 | case UNOP_NEG: | |
10371 | case UNOP_LOGICAL_NOT: | |
10372 | case UNOP_COMPLEMENT: | |
10373 | case UNOP_ADDR: | |
10374 | case UNOP_HIGH: | |
aeaa2474 | 10375 | case UNOP_CAST: |
9eaf6705 TT |
10376 | |
10377 | case UNOP_CAST_TYPE: | |
10378 | case UNOP_REINTERPRET_CAST: | |
10379 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10380 | /* Unary, binary and ternary operators: We have to check |
10381 | their operands. If they are constant, then so is the | |
10382 | result of that operation. For instance, if A and B are | |
10383 | determined to be constants, then so is "A + B". | |
10384 | ||
10385 | UNOP_IND is one exception to the rule above, because the | |
10386 | value of *ADDR is not necessarily a constant, even when | |
10387 | ADDR is. */ | |
65d79d4b SDJ |
10388 | break; |
10389 | ||
10390 | case OP_VAR_VALUE: | |
10391 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10392 | |
65d79d4b | 10393 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10394 | possible that a buggy compiler could mark a variable as |
10395 | constant even when it is not, and TYPE_CONST would return | |
10396 | true in this case, while SYMBOL_CLASS wouldn't. | |
10397 | ||
10398 | We also have to check for function symbols because they | |
10399 | are always constant. */ | |
65d79d4b SDJ |
10400 | { |
10401 | struct symbol *s = exp->elts[i + 2].symbol; | |
10402 | ||
10403 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10404 | && SYMBOL_CLASS (s) != LOC_CONST | |
10405 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10406 | return 0; | |
10407 | break; | |
10408 | } | |
10409 | ||
10410 | /* The default action is to return 0 because we are using | |
10411 | the optimistic approach here: If we don't know something, | |
10412 | then it is not a constant. */ | |
10413 | default: | |
10414 | return 0; | |
10415 | } | |
10416 | } | |
10417 | ||
10418 | return 1; | |
10419 | } | |
10420 | ||
3a5c3e22 PA |
10421 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10422 | ||
10423 | static void | |
10424 | dtor_watchpoint (struct breakpoint *self) | |
10425 | { | |
10426 | struct watchpoint *w = (struct watchpoint *) self; | |
10427 | ||
10428 | xfree (w->cond_exp); | |
10429 | xfree (w->exp); | |
10430 | xfree (w->exp_string); | |
10431 | xfree (w->exp_string_reparse); | |
10432 | value_free (w->val); | |
10433 | ||
10434 | base_breakpoint_ops.dtor (self); | |
10435 | } | |
10436 | ||
348d480f PA |
10437 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10438 | ||
10439 | static void | |
10440 | re_set_watchpoint (struct breakpoint *b) | |
10441 | { | |
3a5c3e22 PA |
10442 | struct watchpoint *w = (struct watchpoint *) b; |
10443 | ||
348d480f PA |
10444 | /* Watchpoint can be either on expression using entirely global |
10445 | variables, or it can be on local variables. | |
10446 | ||
10447 | Watchpoints of the first kind are never auto-deleted, and even | |
10448 | persist across program restarts. Since they can use variables | |
10449 | from shared libraries, we need to reparse expression as libraries | |
10450 | are loaded and unloaded. | |
10451 | ||
10452 | Watchpoints on local variables can also change meaning as result | |
10453 | of solib event. For example, if a watchpoint uses both a local | |
10454 | and a global variables in expression, it's a local watchpoint, | |
10455 | but unloading of a shared library will make the expression | |
10456 | invalid. This is not a very common use case, but we still | |
10457 | re-evaluate expression, to avoid surprises to the user. | |
10458 | ||
10459 | Note that for local watchpoints, we re-evaluate it only if | |
10460 | watchpoints frame id is still valid. If it's not, it means the | |
10461 | watchpoint is out of scope and will be deleted soon. In fact, | |
10462 | I'm not sure we'll ever be called in this case. | |
10463 | ||
10464 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10465 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10466 | |
3a5c3e22 PA |
10467 | Don't do anything about disabled watchpoints, since they will be |
10468 | reevaluated again when enabled. */ | |
10469 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10470 | } |
10471 | ||
77b06cd7 TJB |
10472 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10473 | ||
10474 | static int | |
10475 | insert_watchpoint (struct bp_location *bl) | |
10476 | { | |
3a5c3e22 PA |
10477 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10478 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10479 | |
10480 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10481 | w->cond_exp); |
77b06cd7 TJB |
10482 | } |
10483 | ||
10484 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10485 | ||
10486 | static int | |
10487 | remove_watchpoint (struct bp_location *bl) | |
10488 | { | |
3a5c3e22 PA |
10489 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10490 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10491 | |
10492 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10493 | w->cond_exp); |
e09342b5 TJB |
10494 | } |
10495 | ||
e09342b5 | 10496 | static int |
348d480f | 10497 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10498 | struct address_space *aspace, CORE_ADDR bp_addr, |
10499 | const struct target_waitstatus *ws) | |
e09342b5 | 10500 | { |
348d480f | 10501 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10502 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10503 | |
348d480f PA |
10504 | /* Continuable hardware watchpoints are treated as non-existent if the |
10505 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10506 | some data address). Otherwise gdb won't stop on a break instruction | |
10507 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10508 | been defined. Also skip watchpoints which we know did not trigger | |
10509 | (did not match the data address). */ | |
10510 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10511 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10512 | return 0; |
9c06b0b4 | 10513 | |
348d480f | 10514 | return 1; |
9c06b0b4 TJB |
10515 | } |
10516 | ||
348d480f PA |
10517 | static void |
10518 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10519 | { |
348d480f | 10520 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10521 | |
348d480f | 10522 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10523 | } |
10524 | ||
10525 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10526 | hardware watchpoints. */ |
9c06b0b4 TJB |
10527 | |
10528 | static int | |
348d480f | 10529 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10530 | { |
3a5c3e22 PA |
10531 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10532 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10533 | |
10534 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10535 | } |
10536 | ||
10537 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10538 | hardware watchpoints. */ |
9c06b0b4 TJB |
10539 | |
10540 | static int | |
348d480f | 10541 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10542 | { |
efa80663 PA |
10543 | /* Read and access watchpoints only work with hardware support. */ |
10544 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10545 | } |
10546 | ||
9c06b0b4 | 10547 | static enum print_stop_action |
348d480f | 10548 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10549 | { |
348d480f PA |
10550 | struct cleanup *old_chain; |
10551 | struct breakpoint *b; | |
f99d8bf4 | 10552 | struct ui_file *stb; |
348d480f | 10553 | enum print_stop_action result; |
3a5c3e22 | 10554 | struct watchpoint *w; |
79a45e25 | 10555 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10556 | |
10557 | gdb_assert (bs->bp_location_at != NULL); | |
10558 | ||
348d480f | 10559 | b = bs->breakpoint_at; |
3a5c3e22 | 10560 | w = (struct watchpoint *) b; |
348d480f | 10561 | |
f99d8bf4 PA |
10562 | stb = mem_fileopen (); |
10563 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10564 | |
10565 | switch (b->type) | |
10566 | { | |
348d480f | 10567 | case bp_watchpoint: |
9c06b0b4 TJB |
10568 | case bp_hardware_watchpoint: |
10569 | annotate_watchpoint (b->number); | |
10570 | if (ui_out_is_mi_like_p (uiout)) | |
10571 | ui_out_field_string | |
10572 | (uiout, "reason", | |
10573 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10574 | mention (b); |
10575 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10576 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10577 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10578 | ui_out_field_stream (uiout, "old", stb); |
10579 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10580 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10581 | ui_out_field_stream (uiout, "new", stb); |
10582 | ui_out_text (uiout, "\n"); | |
10583 | /* More than one watchpoint may have been triggered. */ | |
10584 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10585 | break; |
10586 | ||
10587 | case bp_read_watchpoint: | |
10588 | if (ui_out_is_mi_like_p (uiout)) | |
10589 | ui_out_field_string | |
10590 | (uiout, "reason", | |
10591 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10592 | mention (b); |
10593 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10594 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10595 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10596 | ui_out_field_stream (uiout, "value", stb); |
10597 | ui_out_text (uiout, "\n"); | |
10598 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10599 | break; |
10600 | ||
10601 | case bp_access_watchpoint: | |
348d480f PA |
10602 | if (bs->old_val != NULL) |
10603 | { | |
10604 | annotate_watchpoint (b->number); | |
10605 | if (ui_out_is_mi_like_p (uiout)) | |
10606 | ui_out_field_string | |
10607 | (uiout, "reason", | |
10608 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10609 | mention (b); | |
10610 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10611 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10612 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10613 | ui_out_field_stream (uiout, "old", stb); |
10614 | ui_out_text (uiout, "\nNew value = "); | |
10615 | } | |
10616 | else | |
10617 | { | |
10618 | mention (b); | |
10619 | if (ui_out_is_mi_like_p (uiout)) | |
10620 | ui_out_field_string | |
10621 | (uiout, "reason", | |
10622 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10623 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10624 | ui_out_text (uiout, "\nValue = "); | |
10625 | } | |
f99d8bf4 | 10626 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10627 | ui_out_field_stream (uiout, "new", stb); |
10628 | ui_out_text (uiout, "\n"); | |
10629 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10630 | break; |
10631 | default: | |
348d480f | 10632 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10633 | } |
10634 | ||
348d480f PA |
10635 | do_cleanups (old_chain); |
10636 | return result; | |
10637 | } | |
10638 | ||
10639 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10640 | watchpoints. */ | |
10641 | ||
10642 | static void | |
10643 | print_mention_watchpoint (struct breakpoint *b) | |
10644 | { | |
10645 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10646 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10647 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10648 | |
10649 | switch (b->type) | |
10650 | { | |
10651 | case bp_watchpoint: | |
10652 | ui_out_text (uiout, "Watchpoint "); | |
10653 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10654 | break; | |
10655 | case bp_hardware_watchpoint: | |
10656 | ui_out_text (uiout, "Hardware watchpoint "); | |
10657 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10658 | break; | |
10659 | case bp_read_watchpoint: | |
10660 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10661 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10662 | break; | |
10663 | case bp_access_watchpoint: | |
10664 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10665 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10666 | break; | |
10667 | default: | |
10668 | internal_error (__FILE__, __LINE__, | |
10669 | _("Invalid hardware watchpoint type.")); | |
10670 | } | |
10671 | ||
10672 | ui_out_field_int (uiout, "number", b->number); | |
10673 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10674 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10675 | do_cleanups (ui_out_chain); |
10676 | } | |
10677 | ||
10678 | /* Implement the "print_recreate" breakpoint_ops method for | |
10679 | watchpoints. */ | |
10680 | ||
10681 | static void | |
10682 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10683 | { | |
3a5c3e22 PA |
10684 | struct watchpoint *w = (struct watchpoint *) b; |
10685 | ||
348d480f PA |
10686 | switch (b->type) |
10687 | { | |
10688 | case bp_watchpoint: | |
10689 | case bp_hardware_watchpoint: | |
10690 | fprintf_unfiltered (fp, "watch"); | |
10691 | break; | |
10692 | case bp_read_watchpoint: | |
10693 | fprintf_unfiltered (fp, "rwatch"); | |
10694 | break; | |
10695 | case bp_access_watchpoint: | |
10696 | fprintf_unfiltered (fp, "awatch"); | |
10697 | break; | |
10698 | default: | |
10699 | internal_error (__FILE__, __LINE__, | |
10700 | _("Invalid watchpoint type.")); | |
10701 | } | |
10702 | ||
3a5c3e22 | 10703 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10704 | print_recreate_thread (b, fp); |
348d480f PA |
10705 | } |
10706 | ||
427cd150 TT |
10707 | /* Implement the "explains_signal" breakpoint_ops method for |
10708 | watchpoints. */ | |
10709 | ||
47591c29 | 10710 | static int |
427cd150 TT |
10711 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10712 | { | |
10713 | /* A software watchpoint cannot cause a signal other than | |
10714 | GDB_SIGNAL_TRAP. */ | |
10715 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10716 | return 0; |
427cd150 | 10717 | |
47591c29 | 10718 | return 1; |
427cd150 TT |
10719 | } |
10720 | ||
348d480f PA |
10721 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10722 | ||
2060206e | 10723 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10724 | |
10725 | /* Implement the "insert" breakpoint_ops method for | |
10726 | masked hardware watchpoints. */ | |
10727 | ||
10728 | static int | |
10729 | insert_masked_watchpoint (struct bp_location *bl) | |
10730 | { | |
3a5c3e22 PA |
10731 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10732 | ||
10733 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10734 | bl->watchpoint_type); |
10735 | } | |
10736 | ||
10737 | /* Implement the "remove" breakpoint_ops method for | |
10738 | masked hardware watchpoints. */ | |
10739 | ||
10740 | static int | |
10741 | remove_masked_watchpoint (struct bp_location *bl) | |
10742 | { | |
3a5c3e22 PA |
10743 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10744 | ||
10745 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10746 | bl->watchpoint_type); |
10747 | } | |
10748 | ||
10749 | /* Implement the "resources_needed" breakpoint_ops method for | |
10750 | masked hardware watchpoints. */ | |
10751 | ||
10752 | static int | |
10753 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10754 | { | |
3a5c3e22 PA |
10755 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10756 | ||
10757 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10758 | } |
10759 | ||
10760 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10761 | masked hardware watchpoints. */ | |
10762 | ||
10763 | static int | |
10764 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10765 | { | |
10766 | return 0; | |
10767 | } | |
10768 | ||
10769 | /* Implement the "print_it" breakpoint_ops method for | |
10770 | masked hardware watchpoints. */ | |
10771 | ||
10772 | static enum print_stop_action | |
10773 | print_it_masked_watchpoint (bpstat bs) | |
10774 | { | |
10775 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10776 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10777 | |
10778 | /* Masked watchpoints have only one location. */ | |
10779 | gdb_assert (b->loc && b->loc->next == NULL); | |
10780 | ||
10781 | switch (b->type) | |
10782 | { | |
10783 | case bp_hardware_watchpoint: | |
10784 | annotate_watchpoint (b->number); | |
10785 | if (ui_out_is_mi_like_p (uiout)) | |
10786 | ui_out_field_string | |
10787 | (uiout, "reason", | |
10788 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10789 | break; | |
10790 | ||
10791 | case bp_read_watchpoint: | |
10792 | if (ui_out_is_mi_like_p (uiout)) | |
10793 | ui_out_field_string | |
10794 | (uiout, "reason", | |
10795 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10796 | break; | |
10797 | ||
10798 | case bp_access_watchpoint: | |
10799 | if (ui_out_is_mi_like_p (uiout)) | |
10800 | ui_out_field_string | |
10801 | (uiout, "reason", | |
10802 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10803 | break; | |
10804 | default: | |
10805 | internal_error (__FILE__, __LINE__, | |
10806 | _("Invalid hardware watchpoint type.")); | |
10807 | } | |
10808 | ||
10809 | mention (b); | |
9c06b0b4 TJB |
10810 | ui_out_text (uiout, _("\n\ |
10811 | Check the underlying instruction at PC for the memory\n\ | |
10812 | address and value which triggered this watchpoint.\n")); | |
10813 | ui_out_text (uiout, "\n"); | |
10814 | ||
10815 | /* More than one watchpoint may have been triggered. */ | |
10816 | return PRINT_UNKNOWN; | |
10817 | } | |
10818 | ||
10819 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10820 | masked hardware watchpoints. */ | |
10821 | ||
10822 | static void | |
10823 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10824 | struct ui_out *uiout) | |
10825 | { | |
3a5c3e22 PA |
10826 | struct watchpoint *w = (struct watchpoint *) b; |
10827 | ||
9c06b0b4 TJB |
10828 | /* Masked watchpoints have only one location. */ |
10829 | gdb_assert (b->loc && b->loc->next == NULL); | |
10830 | ||
10831 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10832 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10833 | ui_out_text (uiout, "\n"); |
10834 | } | |
10835 | ||
10836 | /* Implement the "print_mention" breakpoint_ops method for | |
10837 | masked hardware watchpoints. */ | |
10838 | ||
10839 | static void | |
10840 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10841 | { | |
3a5c3e22 | 10842 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10843 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10844 | struct cleanup *ui_out_chain; |
10845 | ||
10846 | switch (b->type) | |
10847 | { | |
10848 | case bp_hardware_watchpoint: | |
10849 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10850 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10851 | break; | |
10852 | case bp_read_watchpoint: | |
10853 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10854 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10855 | break; | |
10856 | case bp_access_watchpoint: | |
10857 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10858 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10859 | break; | |
10860 | default: | |
10861 | internal_error (__FILE__, __LINE__, | |
10862 | _("Invalid hardware watchpoint type.")); | |
10863 | } | |
10864 | ||
10865 | ui_out_field_int (uiout, "number", b->number); | |
10866 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10867 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10868 | do_cleanups (ui_out_chain); |
10869 | } | |
10870 | ||
10871 | /* Implement the "print_recreate" breakpoint_ops method for | |
10872 | masked hardware watchpoints. */ | |
10873 | ||
10874 | static void | |
10875 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10876 | { | |
3a5c3e22 | 10877 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10878 | char tmp[40]; |
10879 | ||
10880 | switch (b->type) | |
10881 | { | |
10882 | case bp_hardware_watchpoint: | |
10883 | fprintf_unfiltered (fp, "watch"); | |
10884 | break; | |
10885 | case bp_read_watchpoint: | |
10886 | fprintf_unfiltered (fp, "rwatch"); | |
10887 | break; | |
10888 | case bp_access_watchpoint: | |
10889 | fprintf_unfiltered (fp, "awatch"); | |
10890 | break; | |
10891 | default: | |
10892 | internal_error (__FILE__, __LINE__, | |
10893 | _("Invalid hardware watchpoint type.")); | |
10894 | } | |
10895 | ||
3a5c3e22 PA |
10896 | sprintf_vma (tmp, w->hw_wp_mask); |
10897 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10898 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10899 | } |
10900 | ||
10901 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10902 | ||
2060206e | 10903 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10904 | |
10905 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10906 | ||
10907 | static int | |
10908 | is_masked_watchpoint (const struct breakpoint *b) | |
10909 | { | |
10910 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10911 | } | |
10912 | ||
53a5351d JM |
10913 | /* accessflag: hw_write: watch write, |
10914 | hw_read: watch read, | |
10915 | hw_access: watch access (read or write) */ | |
c906108c | 10916 | static void |
bbc13ae3 | 10917 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10918 | int just_location, int internal) |
c906108c | 10919 | { |
d983da9c | 10920 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10921 | struct expression *exp; |
270140bd | 10922 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10923 | struct value *val, *mark, *result; |
bb9d5f81 | 10924 | int saved_bitpos = 0, saved_bitsize = 0; |
c906108c | 10925 | struct frame_info *frame; |
bbc13ae3 KS |
10926 | const char *exp_start = NULL; |
10927 | const char *exp_end = NULL; | |
10928 | const char *tok, *end_tok; | |
9c06b0b4 | 10929 | int toklen = -1; |
bbc13ae3 KS |
10930 | const char *cond_start = NULL; |
10931 | const char *cond_end = NULL; | |
c906108c | 10932 | enum bptype bp_type; |
37e4754d | 10933 | int thread = -1; |
0cf6dd15 | 10934 | int pc = 0; |
9c06b0b4 TJB |
10935 | /* Flag to indicate whether we are going to use masks for |
10936 | the hardware watchpoint. */ | |
10937 | int use_mask = 0; | |
10938 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10939 | struct watchpoint *w; |
bbc13ae3 KS |
10940 | char *expression; |
10941 | struct cleanup *back_to; | |
c906108c | 10942 | |
37e4754d LM |
10943 | /* Make sure that we actually have parameters to parse. */ |
10944 | if (arg != NULL && arg[0] != '\0') | |
10945 | { | |
bbc13ae3 KS |
10946 | const char *value_start; |
10947 | ||
10948 | exp_end = arg + strlen (arg); | |
37e4754d | 10949 | |
9c06b0b4 TJB |
10950 | /* Look for "parameter value" pairs at the end |
10951 | of the arguments string. */ | |
bbc13ae3 | 10952 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10953 | { |
10954 | /* Skip whitespace at the end of the argument list. */ | |
10955 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10956 | tok--; | |
10957 | ||
10958 | /* Find the beginning of the last token. | |
10959 | This is the value of the parameter. */ | |
10960 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10961 | tok--; | |
10962 | value_start = tok + 1; | |
10963 | ||
10964 | /* Skip whitespace. */ | |
10965 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10966 | tok--; | |
10967 | ||
10968 | end_tok = tok; | |
10969 | ||
10970 | /* Find the beginning of the second to last token. | |
10971 | This is the parameter itself. */ | |
10972 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10973 | tok--; | |
10974 | tok++; | |
10975 | toklen = end_tok - tok + 1; | |
10976 | ||
61012eef | 10977 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 TJB |
10978 | { |
10979 | /* At this point we've found a "thread" token, which means | |
10980 | the user is trying to set a watchpoint that triggers | |
10981 | only in a specific thread. */ | |
10982 | char *endp; | |
37e4754d | 10983 | |
9c06b0b4 TJB |
10984 | if (thread != -1) |
10985 | error(_("You can specify only one thread.")); | |
37e4754d | 10986 | |
9c06b0b4 TJB |
10987 | /* Extract the thread ID from the next token. */ |
10988 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10989 | |
9c06b0b4 TJB |
10990 | /* Check if the user provided a valid numeric value for the |
10991 | thread ID. */ | |
10992 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10993 | error (_("Invalid thread ID specification %s."), value_start); | |
10994 | ||
10995 | /* Check if the thread actually exists. */ | |
10996 | if (!valid_thread_id (thread)) | |
af4908ba | 10997 | invalid_thread_id_error (thread); |
9c06b0b4 | 10998 | } |
61012eef | 10999 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
11000 | { |
11001 | /* We've found a "mask" token, which means the user wants to | |
11002 | create a hardware watchpoint that is going to have the mask | |
11003 | facility. */ | |
11004 | struct value *mask_value, *mark; | |
37e4754d | 11005 | |
9c06b0b4 TJB |
11006 | if (use_mask) |
11007 | error(_("You can specify only one mask.")); | |
37e4754d | 11008 | |
9c06b0b4 | 11009 | use_mask = just_location = 1; |
37e4754d | 11010 | |
9c06b0b4 TJB |
11011 | mark = value_mark (); |
11012 | mask_value = parse_to_comma_and_eval (&value_start); | |
11013 | mask = value_as_address (mask_value); | |
11014 | value_free_to_mark (mark); | |
11015 | } | |
11016 | else | |
11017 | /* We didn't recognize what we found. We should stop here. */ | |
11018 | break; | |
37e4754d | 11019 | |
9c06b0b4 TJB |
11020 | /* Truncate the string and get rid of the "parameter value" pair before |
11021 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 11022 | exp_end = tok; |
9c06b0b4 | 11023 | } |
37e4754d | 11024 | } |
bbc13ae3 KS |
11025 | else |
11026 | exp_end = arg; | |
37e4754d | 11027 | |
bbc13ae3 KS |
11028 | /* Parse the rest of the arguments. From here on out, everything |
11029 | is in terms of a newly allocated string instead of the original | |
11030 | ARG. */ | |
c906108c | 11031 | innermost_block = NULL; |
bbc13ae3 KS |
11032 | expression = savestring (arg, exp_end - arg); |
11033 | back_to = make_cleanup (xfree, expression); | |
11034 | exp_start = arg = expression; | |
1bb9788d | 11035 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 11036 | exp_end = arg; |
fa8a61dc TT |
11037 | /* Remove trailing whitespace from the expression before saving it. |
11038 | This makes the eventual display of the expression string a bit | |
11039 | prettier. */ | |
11040 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
11041 | --exp_end; | |
11042 | ||
65d79d4b SDJ |
11043 | /* Checking if the expression is not constant. */ |
11044 | if (watchpoint_exp_is_const (exp)) | |
11045 | { | |
11046 | int len; | |
11047 | ||
11048 | len = exp_end - exp_start; | |
11049 | while (len > 0 && isspace (exp_start[len - 1])) | |
11050 | len--; | |
11051 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
11052 | } | |
11053 | ||
c906108c SS |
11054 | exp_valid_block = innermost_block; |
11055 | mark = value_mark (); | |
3a1115a0 | 11056 | fetch_subexp_value (exp, &pc, &val, &result, NULL, just_location); |
06a64a0b | 11057 | |
bb9d5f81 PP |
11058 | if (val != NULL && just_location) |
11059 | { | |
11060 | saved_bitpos = value_bitpos (val); | |
11061 | saved_bitsize = value_bitsize (val); | |
11062 | } | |
11063 | ||
06a64a0b TT |
11064 | if (just_location) |
11065 | { | |
9c06b0b4 TJB |
11066 | int ret; |
11067 | ||
06a64a0b | 11068 | exp_valid_block = NULL; |
a1442452 | 11069 | val = value_addr (result); |
06a64a0b TT |
11070 | release_value (val); |
11071 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
11072 | |
11073 | if (use_mask) | |
11074 | { | |
11075 | ret = target_masked_watch_num_registers (value_as_address (val), | |
11076 | mask); | |
11077 | if (ret == -1) | |
11078 | error (_("This target does not support masked watchpoints.")); | |
11079 | else if (ret == -2) | |
11080 | error (_("Invalid mask or memory region.")); | |
11081 | } | |
06a64a0b TT |
11082 | } |
11083 | else if (val != NULL) | |
fa4727a6 | 11084 | release_value (val); |
c906108c | 11085 | |
bbc13ae3 KS |
11086 | tok = skip_spaces_const (arg); |
11087 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11088 | |
11089 | toklen = end_tok - tok; | |
11090 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11091 | { | |
2d134ed3 PA |
11092 | struct expression *cond; |
11093 | ||
60e1c644 | 11094 | innermost_block = NULL; |
c906108c | 11095 | tok = cond_start = end_tok + 1; |
1bb9788d | 11096 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11097 | |
11098 | /* The watchpoint expression may not be local, but the condition | |
11099 | may still be. E.g.: `watch global if local > 0'. */ | |
11100 | cond_exp_valid_block = innermost_block; | |
11101 | ||
2d134ed3 | 11102 | xfree (cond); |
c906108c SS |
11103 | cond_end = tok; |
11104 | } | |
11105 | if (*tok) | |
8a3fe4f8 | 11106 | error (_("Junk at end of command.")); |
c906108c | 11107 | |
d983da9c | 11108 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11109 | |
11110 | /* If the expression is "local", then set up a "watchpoint scope" | |
11111 | breakpoint at the point where we've left the scope of the watchpoint | |
11112 | expression. Create the scope breakpoint before the watchpoint, so | |
11113 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11114 | if (exp_valid_block && frame) |
d983da9c | 11115 | { |
edb3359d DJ |
11116 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11117 | { | |
11118 | scope_breakpoint | |
a6d9a66e UW |
11119 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11120 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11121 | bp_watchpoint_scope, |
11122 | &momentary_breakpoint_ops); | |
d983da9c | 11123 | |
edb3359d | 11124 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11125 | |
edb3359d DJ |
11126 | /* Automatically delete the breakpoint when it hits. */ |
11127 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11128 | |
edb3359d DJ |
11129 | /* Only break in the proper frame (help with recursion). */ |
11130 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11131 | |
edb3359d | 11132 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11133 | scope_breakpoint->loc->gdbarch |
11134 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11135 | scope_breakpoint->loc->requested_address |
11136 | = frame_unwind_caller_pc (frame); | |
11137 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11138 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11139 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11140 | scope_breakpoint->type); |
11141 | } | |
d983da9c DJ |
11142 | } |
11143 | ||
e8369a73 AB |
11144 | /* Now set up the breakpoint. We create all watchpoints as hardware |
11145 | watchpoints here even if hardware watchpoints are turned off, a call | |
11146 | to update_watchpoint later in this function will cause the type to | |
11147 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
11148 | ||
11149 | if (accessflag == hw_read) | |
11150 | bp_type = bp_read_watchpoint; | |
11151 | else if (accessflag == hw_access) | |
11152 | bp_type = bp_access_watchpoint; | |
11153 | else | |
11154 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 PA |
11155 | |
11156 | w = XCNEW (struct watchpoint); | |
11157 | b = &w->base; | |
348d480f | 11158 | if (use_mask) |
3a5c3e22 PA |
11159 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11160 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11161 | else |
3a5c3e22 PA |
11162 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11163 | &watchpoint_breakpoint_ops); | |
37e4754d | 11164 | b->thread = thread; |
b5de0fa7 | 11165 | b->disposition = disp_donttouch; |
348d480f | 11166 | b->pspace = current_program_space; |
3a5c3e22 PA |
11167 | w->exp = exp; |
11168 | w->exp_valid_block = exp_valid_block; | |
11169 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11170 | if (just_location) |
11171 | { | |
11172 | struct type *t = value_type (val); | |
11173 | CORE_ADDR addr = value_as_address (val); | |
11174 | char *name; | |
11175 | ||
11176 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11177 | name = type_to_string (t); | |
11178 | ||
3a5c3e22 | 11179 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11180 | core_addr_to_string (addr)); |
06a64a0b TT |
11181 | xfree (name); |
11182 | ||
3a5c3e22 | 11183 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11184 | (int) (exp_end - exp_start), exp_start); |
11185 | ||
06a64a0b TT |
11186 | /* The above expression is in C. */ |
11187 | b->language = language_c; | |
11188 | } | |
11189 | else | |
3a5c3e22 | 11190 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11191 | |
11192 | if (use_mask) | |
11193 | { | |
3a5c3e22 | 11194 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11195 | } |
11196 | else | |
11197 | { | |
3a5c3e22 | 11198 | w->val = val; |
bb9d5f81 PP |
11199 | w->val_bitpos = saved_bitpos; |
11200 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 11201 | w->val_valid = 1; |
9c06b0b4 | 11202 | } |
77b06cd7 | 11203 | |
c906108c SS |
11204 | if (cond_start) |
11205 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11206 | else | |
11207 | b->cond_string = 0; | |
c5aa993b | 11208 | |
c906108c | 11209 | if (frame) |
f6bc2008 | 11210 | { |
3a5c3e22 PA |
11211 | w->watchpoint_frame = get_frame_id (frame); |
11212 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11213 | } |
c906108c | 11214 | else |
f6bc2008 | 11215 | { |
3a5c3e22 PA |
11216 | w->watchpoint_frame = null_frame_id; |
11217 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11218 | } |
c906108c | 11219 | |
d983da9c | 11220 | if (scope_breakpoint != NULL) |
c906108c | 11221 | { |
d983da9c DJ |
11222 | /* The scope breakpoint is related to the watchpoint. We will |
11223 | need to act on them together. */ | |
11224 | b->related_breakpoint = scope_breakpoint; | |
11225 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11226 | } |
d983da9c | 11227 | |
06a64a0b TT |
11228 | if (!just_location) |
11229 | value_free_to_mark (mark); | |
2d134ed3 | 11230 | |
492d29ea | 11231 | TRY |
a9634178 TJB |
11232 | { |
11233 | /* Finally update the new watchpoint. This creates the locations | |
11234 | that should be inserted. */ | |
3a5c3e22 | 11235 | update_watchpoint (w, 1); |
a9634178 | 11236 | } |
492d29ea | 11237 | CATCH (e, RETURN_MASK_ALL) |
a9634178 TJB |
11238 | { |
11239 | delete_breakpoint (b); | |
11240 | throw_exception (e); | |
11241 | } | |
492d29ea | 11242 | END_CATCH |
a9634178 | 11243 | |
3ea46bff | 11244 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11245 | do_cleanups (back_to); |
c906108c SS |
11246 | } |
11247 | ||
e09342b5 | 11248 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11249 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11250 | |
c906108c | 11251 | static int |
a9634178 | 11252 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11253 | { |
11254 | int found_memory_cnt = 0; | |
2e70b7b9 | 11255 | struct value *head = v; |
c906108c SS |
11256 | |
11257 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11258 | if (!can_use_hw_watchpoints) |
c906108c | 11259 | return 0; |
c5aa993b | 11260 | |
5c44784c JM |
11261 | /* Make sure that the value of the expression depends only upon |
11262 | memory contents, and values computed from them within GDB. If we | |
11263 | find any register references or function calls, we can't use a | |
11264 | hardware watchpoint. | |
11265 | ||
11266 | The idea here is that evaluating an expression generates a series | |
11267 | of values, one holding the value of every subexpression. (The | |
11268 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11269 | a*b+c.) GDB's values hold almost enough information to establish | |
11270 | the criteria given above --- they identify memory lvalues, | |
11271 | register lvalues, computed values, etcetera. So we can evaluate | |
11272 | the expression, and then scan the chain of values that leaves | |
11273 | behind to decide whether we can detect any possible change to the | |
11274 | expression's final value using only hardware watchpoints. | |
11275 | ||
11276 | However, I don't think that the values returned by inferior | |
11277 | function calls are special in any way. So this function may not | |
11278 | notice that an expression involving an inferior function call | |
11279 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11280 | for (; v; v = value_next (v)) |
c906108c | 11281 | { |
5c44784c | 11282 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11283 | { |
8464be76 DJ |
11284 | if (v != head && value_lazy (v)) |
11285 | /* A lazy memory lvalue in the chain is one that GDB never | |
11286 | needed to fetch; we either just used its address (e.g., | |
11287 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11288 | in `a,b'). This doesn't apply to HEAD; if that is | |
11289 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11290 | ; |
53a5351d | 11291 | else |
5c44784c JM |
11292 | { |
11293 | /* Ahh, memory we actually used! Check if we can cover | |
11294 | it with hardware watchpoints. */ | |
df407dfe | 11295 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11296 | |
11297 | /* We only watch structs and arrays if user asked for it | |
11298 | explicitly, never if they just happen to appear in a | |
11299 | middle of some value chain. */ | |
11300 | if (v == head | |
11301 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11302 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11303 | { | |
42ae5230 | 11304 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11305 | int len; |
11306 | int num_regs; | |
11307 | ||
a9634178 | 11308 | len = (target_exact_watchpoints |
e09342b5 TJB |
11309 | && is_scalar_type_recursive (vtype))? |
11310 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11311 | |
e09342b5 TJB |
11312 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11313 | if (!num_regs) | |
2e70b7b9 MS |
11314 | return 0; |
11315 | else | |
e09342b5 | 11316 | found_memory_cnt += num_regs; |
2e70b7b9 | 11317 | } |
5c44784c | 11318 | } |
c5aa993b | 11319 | } |
5086187c AC |
11320 | else if (VALUE_LVAL (v) != not_lval |
11321 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11322 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11323 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11324 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11325 | } |
11326 | ||
11327 | /* The expression itself looks suitable for using a hardware | |
11328 | watchpoint, but give the target machine a chance to reject it. */ | |
11329 | return found_memory_cnt; | |
11330 | } | |
11331 | ||
8b93c638 | 11332 | void |
84f4c1fe | 11333 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11334 | { |
84f4c1fe | 11335 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11336 | } |
11337 | ||
06a64a0b TT |
11338 | /* A helper function that looks for the "-location" argument and then |
11339 | calls watch_command_1. */ | |
11340 | ||
11341 | static void | |
11342 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11343 | { | |
11344 | int just_location = 0; | |
11345 | ||
11346 | if (arg | |
11347 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11348 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11349 | { | |
e9cafbcc | 11350 | arg = skip_spaces (arg); |
06a64a0b TT |
11351 | just_location = 1; |
11352 | } | |
11353 | ||
84f4c1fe | 11354 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11355 | } |
8926118c | 11356 | |
c5aa993b | 11357 | static void |
fba45db2 | 11358 | watch_command (char *arg, int from_tty) |
c906108c | 11359 | { |
06a64a0b | 11360 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11361 | } |
11362 | ||
8b93c638 | 11363 | void |
84f4c1fe | 11364 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11365 | { |
84f4c1fe | 11366 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11367 | } |
8926118c | 11368 | |
c5aa993b | 11369 | static void |
fba45db2 | 11370 | rwatch_command (char *arg, int from_tty) |
c906108c | 11371 | { |
06a64a0b | 11372 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11373 | } |
11374 | ||
8b93c638 | 11375 | void |
84f4c1fe | 11376 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11377 | { |
84f4c1fe | 11378 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11379 | } |
8926118c | 11380 | |
c5aa993b | 11381 | static void |
fba45db2 | 11382 | awatch_command (char *arg, int from_tty) |
c906108c | 11383 | { |
06a64a0b | 11384 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11385 | } |
c906108c | 11386 | \f |
c5aa993b | 11387 | |
43ff13b4 | 11388 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11389 | because it uses the mechanisms of breakpoints. */ |
11390 | ||
bfec99b2 PA |
11391 | struct until_break_command_continuation_args |
11392 | { | |
11393 | struct breakpoint *breakpoint; | |
11394 | struct breakpoint *breakpoint2; | |
186c406b | 11395 | int thread_num; |
bfec99b2 PA |
11396 | }; |
11397 | ||
43ff13b4 | 11398 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11399 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11400 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11401 | command. */ |
c2c6d25f | 11402 | static void |
fa4cd53f | 11403 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11404 | { |
bfec99b2 PA |
11405 | struct until_break_command_continuation_args *a = arg; |
11406 | ||
11407 | delete_breakpoint (a->breakpoint); | |
11408 | if (a->breakpoint2) | |
11409 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11410 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11411 | } |
11412 | ||
c906108c | 11413 | void |
ae66c1fc | 11414 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11415 | { |
11416 | struct symtabs_and_lines sals; | |
11417 | struct symtab_and_line sal; | |
8556afb4 PA |
11418 | struct frame_info *frame; |
11419 | struct gdbarch *frame_gdbarch; | |
11420 | struct frame_id stack_frame_id; | |
11421 | struct frame_id caller_frame_id; | |
c906108c | 11422 | struct breakpoint *breakpoint; |
f107f563 | 11423 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11424 | struct cleanup *old_chain; |
186c406b TT |
11425 | int thread; |
11426 | struct thread_info *tp; | |
c906108c | 11427 | |
70509625 | 11428 | clear_proceed_status (0); |
c906108c SS |
11429 | |
11430 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11431 | this function. */ |
c5aa993b | 11432 | |
1bfeeb0f | 11433 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11434 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11435 | get_last_displayed_symtab (), |
f8eba3c6 | 11436 | get_last_displayed_line ()); |
c906108c | 11437 | else |
f8eba3c6 TT |
11438 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11439 | (struct symtab *) NULL, 0); | |
c5aa993b | 11440 | |
c906108c | 11441 | if (sals.nelts != 1) |
8a3fe4f8 | 11442 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11443 | |
c906108c | 11444 | sal = sals.sals[0]; |
4a64f543 | 11445 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11446 | |
c906108c | 11447 | if (*arg) |
8a3fe4f8 | 11448 | error (_("Junk at end of arguments.")); |
c5aa993b | 11449 | |
c906108c | 11450 | resolve_sal_pc (&sal); |
c5aa993b | 11451 | |
186c406b TT |
11452 | tp = inferior_thread (); |
11453 | thread = tp->num; | |
11454 | ||
883bc8d1 PA |
11455 | old_chain = make_cleanup (null_cleanup, NULL); |
11456 | ||
8556afb4 PA |
11457 | /* Note linespec handling above invalidates the frame chain. |
11458 | Installing a breakpoint also invalidates the frame chain (as it | |
11459 | may need to switch threads), so do any frame handling before | |
11460 | that. */ | |
11461 | ||
11462 | frame = get_selected_frame (NULL); | |
11463 | frame_gdbarch = get_frame_arch (frame); | |
11464 | stack_frame_id = get_stack_frame_id (frame); | |
11465 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11466 | |
ae66c1fc EZ |
11467 | /* Keep within the current frame, or in frames called by the current |
11468 | one. */ | |
edb3359d | 11469 | |
883bc8d1 | 11470 | if (frame_id_p (caller_frame_id)) |
c906108c | 11471 | { |
883bc8d1 PA |
11472 | struct symtab_and_line sal2; |
11473 | ||
11474 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11475 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11476 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11477 | sal2, |
11478 | caller_frame_id, | |
f107f563 VP |
11479 | bp_until); |
11480 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11481 | |
883bc8d1 | 11482 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11483 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11484 | } |
c5aa993b | 11485 | |
c70a6932 JK |
11486 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11487 | frame = NULL; | |
11488 | ||
883bc8d1 PA |
11489 | if (anywhere) |
11490 | /* If the user told us to continue until a specified location, | |
11491 | we don't specify a frame at which we need to stop. */ | |
11492 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11493 | null_frame_id, bp_until); | |
11494 | else | |
11495 | /* Otherwise, specify the selected frame, because we want to stop | |
11496 | only at the very same frame. */ | |
11497 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11498 | stack_frame_id, bp_until); | |
11499 | make_cleanup_delete_breakpoint (breakpoint); | |
11500 | ||
64ce06e4 | 11501 | proceed (-1, GDB_SIGNAL_DEFAULT); |
f107f563 | 11502 | |
4a64f543 MS |
11503 | /* If we are running asynchronously, and proceed call above has |
11504 | actually managed to start the target, arrange for breakpoints to | |
11505 | be deleted when the target stops. Otherwise, we're already | |
11506 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11507 | |
8ea051c5 | 11508 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11509 | { |
bfec99b2 PA |
11510 | struct until_break_command_continuation_args *args; |
11511 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11512 | |
bfec99b2 PA |
11513 | args->breakpoint = breakpoint; |
11514 | args->breakpoint2 = breakpoint2; | |
186c406b | 11515 | args->thread_num = thread; |
f107f563 VP |
11516 | |
11517 | discard_cleanups (old_chain); | |
95e54da7 PA |
11518 | add_continuation (inferior_thread (), |
11519 | until_break_command_continuation, args, | |
604ead4a | 11520 | xfree); |
f107f563 VP |
11521 | } |
11522 | else | |
c5aa993b | 11523 | do_cleanups (old_chain); |
c906108c | 11524 | } |
ae66c1fc | 11525 | |
c906108c SS |
11526 | /* This function attempts to parse an optional "if <cond>" clause |
11527 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11528 | |
c906108c SS |
11529 | Else, it returns a pointer to the condition string. (It does not |
11530 | attempt to evaluate the string against a particular block.) And, | |
11531 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11532 | if clause in the arg string. */ |
53a5351d | 11533 | |
916703c0 | 11534 | char * |
fba45db2 | 11535 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11536 | { |
c5aa993b JM |
11537 | char *cond_string; |
11538 | ||
11539 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11540 | return NULL; |
c5aa993b | 11541 | |
4a64f543 | 11542 | /* Skip the "if" keyword. */ |
c906108c | 11543 | (*arg) += 2; |
c5aa993b | 11544 | |
c906108c | 11545 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11546 | condition string. */ |
e9cafbcc | 11547 | *arg = skip_spaces (*arg); |
c906108c | 11548 | cond_string = *arg; |
c5aa993b | 11549 | |
4a64f543 MS |
11550 | /* Assume that the condition occupies the remainder of the arg |
11551 | string. */ | |
c906108c | 11552 | (*arg) += strlen (cond_string); |
c5aa993b | 11553 | |
c906108c SS |
11554 | return cond_string; |
11555 | } | |
c5aa993b | 11556 | |
c906108c SS |
11557 | /* Commands to deal with catching events, such as signals, exceptions, |
11558 | process start/exit, etc. */ | |
c5aa993b JM |
11559 | |
11560 | typedef enum | |
11561 | { | |
44feb3ce TT |
11562 | catch_fork_temporary, catch_vfork_temporary, |
11563 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11564 | } |
11565 | catch_fork_kind; | |
11566 | ||
c906108c | 11567 | static void |
cc59ec59 MS |
11568 | catch_fork_command_1 (char *arg, int from_tty, |
11569 | struct cmd_list_element *command) | |
c906108c | 11570 | { |
a6d9a66e | 11571 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11572 | char *cond_string = NULL; |
44feb3ce TT |
11573 | catch_fork_kind fork_kind; |
11574 | int tempflag; | |
11575 | ||
11576 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11577 | tempflag = (fork_kind == catch_fork_temporary | |
11578 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11579 | |
44feb3ce TT |
11580 | if (!arg) |
11581 | arg = ""; | |
e9cafbcc | 11582 | arg = skip_spaces (arg); |
c5aa993b | 11583 | |
c906108c | 11584 | /* The allowed syntax is: |
c5aa993b JM |
11585 | catch [v]fork |
11586 | catch [v]fork if <cond> | |
11587 | ||
4a64f543 | 11588 | First, check if there's an if clause. */ |
c906108c | 11589 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11590 | |
c906108c | 11591 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11592 | error (_("Junk at end of arguments.")); |
c5aa993b | 11593 | |
c906108c | 11594 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11595 | and enable reporting of such events. */ |
c5aa993b JM |
11596 | switch (fork_kind) |
11597 | { | |
44feb3ce TT |
11598 | case catch_fork_temporary: |
11599 | case catch_fork_permanent: | |
a6d9a66e | 11600 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11601 | &catch_fork_breakpoint_ops); |
c906108c | 11602 | break; |
44feb3ce TT |
11603 | case catch_vfork_temporary: |
11604 | case catch_vfork_permanent: | |
a6d9a66e | 11605 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11606 | &catch_vfork_breakpoint_ops); |
c906108c | 11607 | break; |
c5aa993b | 11608 | default: |
8a3fe4f8 | 11609 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11610 | break; |
c5aa993b | 11611 | } |
c906108c SS |
11612 | } |
11613 | ||
11614 | static void | |
cc59ec59 MS |
11615 | catch_exec_command_1 (char *arg, int from_tty, |
11616 | struct cmd_list_element *command) | |
c906108c | 11617 | { |
b4d90040 | 11618 | struct exec_catchpoint *c; |
a6d9a66e | 11619 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11620 | int tempflag; |
c5aa993b | 11621 | char *cond_string = NULL; |
c906108c | 11622 | |
44feb3ce TT |
11623 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11624 | ||
11625 | if (!arg) | |
11626 | arg = ""; | |
e9cafbcc | 11627 | arg = skip_spaces (arg); |
c906108c SS |
11628 | |
11629 | /* The allowed syntax is: | |
c5aa993b JM |
11630 | catch exec |
11631 | catch exec if <cond> | |
c906108c | 11632 | |
4a64f543 | 11633 | First, check if there's an if clause. */ |
c906108c SS |
11634 | cond_string = ep_parse_optional_if_clause (&arg); |
11635 | ||
11636 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11637 | error (_("Junk at end of arguments.")); |
c906108c | 11638 | |
b4d90040 PA |
11639 | c = XNEW (struct exec_catchpoint); |
11640 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11641 | &catch_exec_breakpoint_ops); | |
11642 | c->exec_pathname = NULL; | |
11643 | ||
3ea46bff | 11644 | install_breakpoint (0, &c->base, 1); |
c906108c | 11645 | } |
c5aa993b | 11646 | |
9ac4176b | 11647 | void |
28010a5d PA |
11648 | init_ada_exception_breakpoint (struct breakpoint *b, |
11649 | struct gdbarch *gdbarch, | |
11650 | struct symtab_and_line sal, | |
11651 | char *addr_string, | |
c0a91b2b | 11652 | const struct breakpoint_ops *ops, |
28010a5d | 11653 | int tempflag, |
349774ef | 11654 | int enabled, |
28010a5d | 11655 | int from_tty) |
f7f9143b | 11656 | { |
f7f9143b JB |
11657 | if (from_tty) |
11658 | { | |
5af949e3 UW |
11659 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11660 | if (!loc_gdbarch) | |
11661 | loc_gdbarch = gdbarch; | |
11662 | ||
6c95b8df PA |
11663 | describe_other_breakpoints (loc_gdbarch, |
11664 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11665 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11666 | version for exception catchpoints, because two catchpoints | |
11667 | used for different exception names will use the same address. | |
11668 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11669 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11670 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11671 | the user what type of catchpoint it is. The above is good |
11672 | enough for now, though. */ | |
11673 | } | |
11674 | ||
28010a5d | 11675 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11676 | |
349774ef | 11677 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11678 | b->disposition = tempflag ? disp_del : disp_donttouch; |
f7f9143b JB |
11679 | b->addr_string = addr_string; |
11680 | b->language = language_ada; | |
f7f9143b JB |
11681 | } |
11682 | ||
c906108c | 11683 | static void |
fba45db2 | 11684 | catch_command (char *arg, int from_tty) |
c906108c | 11685 | { |
44feb3ce | 11686 | error (_("Catch requires an event name.")); |
c906108c SS |
11687 | } |
11688 | \f | |
11689 | ||
11690 | static void | |
fba45db2 | 11691 | tcatch_command (char *arg, int from_tty) |
c906108c | 11692 | { |
44feb3ce | 11693 | error (_("Catch requires an event name.")); |
c906108c SS |
11694 | } |
11695 | ||
8a2c437b TT |
11696 | /* A qsort comparison function that sorts breakpoints in order. */ |
11697 | ||
11698 | static int | |
11699 | compare_breakpoints (const void *a, const void *b) | |
11700 | { | |
11701 | const breakpoint_p *ba = a; | |
11702 | uintptr_t ua = (uintptr_t) *ba; | |
11703 | const breakpoint_p *bb = b; | |
11704 | uintptr_t ub = (uintptr_t) *bb; | |
11705 | ||
11706 | if ((*ba)->number < (*bb)->number) | |
11707 | return -1; | |
11708 | else if ((*ba)->number > (*bb)->number) | |
11709 | return 1; | |
11710 | ||
11711 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11712 | the number 0. */ | |
11713 | if (ua < ub) | |
11714 | return -1; | |
94b0e70d | 11715 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11716 | } |
11717 | ||
80f8a6eb | 11718 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11719 | |
11720 | static void | |
fba45db2 | 11721 | clear_command (char *arg, int from_tty) |
c906108c | 11722 | { |
8a2c437b | 11723 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11724 | VEC(breakpoint_p) *found = 0; |
11725 | int ix; | |
c906108c SS |
11726 | int default_match; |
11727 | struct symtabs_and_lines sals; | |
11728 | struct symtab_and_line sal; | |
c906108c | 11729 | int i; |
8a2c437b | 11730 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11731 | |
11732 | if (arg) | |
11733 | { | |
39cf75f7 DE |
11734 | sals = decode_line_with_current_source (arg, |
11735 | (DECODE_LINE_FUNFIRSTLINE | |
11736 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11737 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11738 | default_match = 0; |
11739 | } | |
11740 | else | |
11741 | { | |
c5aa993b | 11742 | sals.sals = (struct symtab_and_line *) |
c906108c | 11743 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11744 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11745 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11746 | |
11747 | /* Set sal's line, symtab, pc, and pspace to the values | |
11748 | corresponding to the last call to print_frame_info. If the | |
11749 | codepoint is not valid, this will set all the fields to 0. */ | |
11750 | get_last_displayed_sal (&sal); | |
c906108c | 11751 | if (sal.symtab == 0) |
8a3fe4f8 | 11752 | error (_("No source file specified.")); |
c906108c SS |
11753 | |
11754 | sals.sals[0] = sal; | |
11755 | sals.nelts = 1; | |
11756 | ||
11757 | default_match = 1; | |
11758 | } | |
11759 | ||
4a64f543 MS |
11760 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11761 | seems, because all existing breakpoints typically have both | |
11762 | file/line and pc set. So, if clear is given file/line, we can | |
11763 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11764 | |
11765 | We only support clearing given the address explicitly | |
11766 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11767 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11768 | due to optimization, all in one block. |
4a64f543 MS |
11769 | |
11770 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11771 | PC corresponding to the same file:line, the breakpoint won't |
11772 | be cleared. We probably can still clear the breakpoint, but | |
11773 | since the other PC value is never presented to user, user | |
11774 | can only find it by guessing, and it does not seem important | |
11775 | to support that. */ | |
11776 | ||
4a64f543 MS |
11777 | /* For each line spec given, delete bps which correspond to it. Do |
11778 | it in two passes, solely to preserve the current behavior that | |
11779 | from_tty is forced true if we delete more than one | |
11780 | breakpoint. */ | |
c906108c | 11781 | |
80f8a6eb | 11782 | found = NULL; |
8a2c437b | 11783 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11784 | for (i = 0; i < sals.nelts; i++) |
11785 | { | |
05cba821 JK |
11786 | const char *sal_fullname; |
11787 | ||
c906108c | 11788 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11789 | If line given (pc == 0), clear all bpts on specified line. |
11790 | If defaulting, clear all bpts on default line | |
c906108c | 11791 | or at default pc. |
c5aa993b JM |
11792 | |
11793 | defaulting sal.pc != 0 tests to do | |
11794 | ||
11795 | 0 1 pc | |
11796 | 1 1 pc _and_ line | |
11797 | 0 0 line | |
11798 | 1 0 <can't happen> */ | |
c906108c SS |
11799 | |
11800 | sal = sals.sals[i]; | |
05cba821 JK |
11801 | sal_fullname = (sal.symtab == NULL |
11802 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11803 | |
4a64f543 | 11804 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11805 | ALL_BREAKPOINTS (b) |
c5aa993b | 11806 | { |
0d381245 | 11807 | int match = 0; |
4a64f543 | 11808 | /* Are we going to delete b? */ |
cc60f2e3 | 11809 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11810 | { |
11811 | struct bp_location *loc = b->loc; | |
11812 | for (; loc; loc = loc->next) | |
11813 | { | |
f8eba3c6 TT |
11814 | /* If the user specified file:line, don't allow a PC |
11815 | match. This matches historical gdb behavior. */ | |
11816 | int pc_match = (!sal.explicit_line | |
11817 | && sal.pc | |
11818 | && (loc->pspace == sal.pspace) | |
11819 | && (loc->address == sal.pc) | |
11820 | && (!section_is_overlay (loc->section) | |
11821 | || loc->section == sal.section)); | |
4aac40c8 TT |
11822 | int line_match = 0; |
11823 | ||
11824 | if ((default_match || sal.explicit_line) | |
2f202fde | 11825 | && loc->symtab != NULL |
05cba821 | 11826 | && sal_fullname != NULL |
4aac40c8 | 11827 | && sal.pspace == loc->pspace |
05cba821 JK |
11828 | && loc->line_number == sal.line |
11829 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11830 | sal_fullname) == 0) | |
11831 | line_match = 1; | |
4aac40c8 | 11832 | |
0d381245 VP |
11833 | if (pc_match || line_match) |
11834 | { | |
11835 | match = 1; | |
11836 | break; | |
11837 | } | |
11838 | } | |
11839 | } | |
11840 | ||
11841 | if (match) | |
d6e956e5 | 11842 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11843 | } |
80f8a6eb | 11844 | } |
8a2c437b | 11845 | |
80f8a6eb | 11846 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11847 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11848 | { |
11849 | if (arg) | |
8a3fe4f8 | 11850 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11851 | else |
8a3fe4f8 | 11852 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11853 | } |
c906108c | 11854 | |
8a2c437b TT |
11855 | /* Remove duplicates from the vec. */ |
11856 | qsort (VEC_address (breakpoint_p, found), | |
11857 | VEC_length (breakpoint_p, found), | |
11858 | sizeof (breakpoint_p), | |
11859 | compare_breakpoints); | |
11860 | prev = VEC_index (breakpoint_p, found, 0); | |
11861 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11862 | { | |
11863 | if (b == prev) | |
11864 | { | |
11865 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11866 | --ix; | |
11867 | } | |
11868 | } | |
11869 | ||
d6e956e5 | 11870 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11871 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11872 | if (from_tty) |
a3f17187 | 11873 | { |
d6e956e5 | 11874 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11875 | printf_unfiltered (_("Deleted breakpoint ")); |
11876 | else | |
11877 | printf_unfiltered (_("Deleted breakpoints ")); | |
11878 | } | |
d6e956e5 VP |
11879 | |
11880 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11881 | { |
c5aa993b | 11882 | if (from_tty) |
d6e956e5 VP |
11883 | printf_unfiltered ("%d ", b->number); |
11884 | delete_breakpoint (b); | |
c906108c | 11885 | } |
80f8a6eb MS |
11886 | if (from_tty) |
11887 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11888 | |
11889 | do_cleanups (cleanups); | |
c906108c SS |
11890 | } |
11891 | \f | |
11892 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11893 | all breakpoints that are marked for deletion, whether hit or not. | |
11894 | This is called after any breakpoint is hit, or after errors. */ | |
11895 | ||
11896 | void | |
fba45db2 | 11897 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11898 | { |
35df4500 | 11899 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11900 | |
11901 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11902 | if (bs->breakpoint_at |
11903 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11904 | && bs->stop) |
f431efe5 | 11905 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11906 | |
35df4500 | 11907 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11908 | { |
b5de0fa7 | 11909 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11910 | delete_breakpoint (b); |
11911 | } | |
c906108c SS |
11912 | } |
11913 | ||
4a64f543 MS |
11914 | /* A comparison function for bp_location AP and BP being interfaced to |
11915 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11916 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11917 | secondarily by ordering first permanent elements and |
4a64f543 | 11918 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11919 | qsort being an unstable algorithm. */ |
876fa593 JK |
11920 | |
11921 | static int | |
494cfb0f | 11922 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 11923 | { |
494cfb0f JK |
11924 | struct bp_location *a = *(void **) ap; |
11925 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
11926 | |
11927 | if (a->address != b->address) | |
11928 | return (a->address > b->address) - (a->address < b->address); | |
11929 | ||
dea2aa5f LM |
11930 | /* Sort locations at the same address by their pspace number, keeping |
11931 | locations of the same inferior (in a multi-inferior environment) | |
11932 | grouped. */ | |
11933 | ||
11934 | if (a->pspace->num != b->pspace->num) | |
11935 | return ((a->pspace->num > b->pspace->num) | |
11936 | - (a->pspace->num < b->pspace->num)); | |
11937 | ||
876fa593 | 11938 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11939 | if (a->permanent != b->permanent) |
11940 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11941 | |
c56a97f9 JK |
11942 | /* Make the internal GDB representation stable across GDB runs |
11943 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11944 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11945 | |
11946 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11947 | return ((a->owner->number > b->owner->number) |
11948 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11949 | |
11950 | return (a > b) - (a < b); | |
11951 | } | |
11952 | ||
876fa593 | 11953 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
11954 | bp_location_shadow_len_after_address_max according to the current |
11955 | content of the bp_location array. */ | |
f7545552 TT |
11956 | |
11957 | static void | |
876fa593 | 11958 | bp_location_target_extensions_update (void) |
f7545552 | 11959 | { |
876fa593 JK |
11960 | struct bp_location *bl, **blp_tmp; |
11961 | ||
11962 | bp_location_placed_address_before_address_max = 0; | |
11963 | bp_location_shadow_len_after_address_max = 0; | |
11964 | ||
11965 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11966 | { | |
11967 | CORE_ADDR start, end, addr; | |
11968 | ||
11969 | if (!bp_location_has_shadow (bl)) | |
11970 | continue; | |
11971 | ||
11972 | start = bl->target_info.placed_address; | |
11973 | end = start + bl->target_info.shadow_len; | |
11974 | ||
11975 | gdb_assert (bl->address >= start); | |
11976 | addr = bl->address - start; | |
11977 | if (addr > bp_location_placed_address_before_address_max) | |
11978 | bp_location_placed_address_before_address_max = addr; | |
11979 | ||
11980 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11981 | ||
11982 | gdb_assert (bl->address < end); | |
11983 | addr = end - bl->address; | |
11984 | if (addr > bp_location_shadow_len_after_address_max) | |
11985 | bp_location_shadow_len_after_address_max = addr; | |
11986 | } | |
f7545552 TT |
11987 | } |
11988 | ||
1e4d1764 YQ |
11989 | /* Download tracepoint locations if they haven't been. */ |
11990 | ||
11991 | static void | |
11992 | download_tracepoint_locations (void) | |
11993 | { | |
7ed2c994 | 11994 | struct breakpoint *b; |
1e4d1764 YQ |
11995 | struct cleanup *old_chain; |
11996 | ||
11997 | if (!target_can_download_tracepoint ()) | |
11998 | return; | |
11999 | ||
12000 | old_chain = save_current_space_and_thread (); | |
12001 | ||
7ed2c994 | 12002 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12003 | { |
7ed2c994 | 12004 | struct bp_location *bl; |
1e4d1764 | 12005 | struct tracepoint *t; |
f2a8bc8a | 12006 | int bp_location_downloaded = 0; |
1e4d1764 | 12007 | |
7ed2c994 | 12008 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12009 | ? !may_insert_fast_tracepoints |
12010 | : !may_insert_tracepoints)) | |
12011 | continue; | |
12012 | ||
7ed2c994 YQ |
12013 | for (bl = b->loc; bl; bl = bl->next) |
12014 | { | |
12015 | /* In tracepoint, locations are _never_ duplicated, so | |
12016 | should_be_inserted is equivalent to | |
12017 | unduplicated_should_be_inserted. */ | |
12018 | if (!should_be_inserted (bl) || bl->inserted) | |
12019 | continue; | |
1e4d1764 | 12020 | |
7ed2c994 | 12021 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12022 | |
7ed2c994 | 12023 | target_download_tracepoint (bl); |
1e4d1764 | 12024 | |
7ed2c994 | 12025 | bl->inserted = 1; |
f2a8bc8a | 12026 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12027 | } |
12028 | t = (struct tracepoint *) b; | |
12029 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12030 | if (bp_location_downloaded) |
12031 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12032 | } |
12033 | ||
12034 | do_cleanups (old_chain); | |
12035 | } | |
12036 | ||
934709f0 PW |
12037 | /* Swap the insertion/duplication state between two locations. */ |
12038 | ||
12039 | static void | |
12040 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12041 | { | |
12042 | const int left_inserted = left->inserted; | |
12043 | const int left_duplicate = left->duplicate; | |
b775012e | 12044 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12045 | const struct bp_target_info left_target_info = left->target_info; |
12046 | ||
1e4d1764 YQ |
12047 | /* Locations of tracepoints can never be duplicated. */ |
12048 | if (is_tracepoint (left->owner)) | |
12049 | gdb_assert (!left->duplicate); | |
12050 | if (is_tracepoint (right->owner)) | |
12051 | gdb_assert (!right->duplicate); | |
12052 | ||
934709f0 PW |
12053 | left->inserted = right->inserted; |
12054 | left->duplicate = right->duplicate; | |
b775012e | 12055 | left->needs_update = right->needs_update; |
934709f0 PW |
12056 | left->target_info = right->target_info; |
12057 | right->inserted = left_inserted; | |
12058 | right->duplicate = left_duplicate; | |
b775012e | 12059 | right->needs_update = left_needs_update; |
934709f0 PW |
12060 | right->target_info = left_target_info; |
12061 | } | |
12062 | ||
b775012e LM |
12063 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12064 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12065 | conditions on the target's side. Such conditions need to be updated on | |
12066 | the target. */ | |
12067 | ||
12068 | static void | |
12069 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12070 | { | |
12071 | struct bp_location **locp = NULL, **loc2p; | |
12072 | struct bp_location *loc; | |
12073 | CORE_ADDR address = 0; | |
12074 | int pspace_num; | |
12075 | ||
12076 | address = bl->address; | |
12077 | pspace_num = bl->pspace->num; | |
12078 | ||
12079 | /* This is only meaningful if the target is | |
12080 | evaluating conditions and if the user has | |
12081 | opted for condition evaluation on the target's | |
12082 | side. */ | |
12083 | if (gdb_evaluates_breakpoint_condition_p () | |
12084 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12085 | return; | |
12086 | ||
12087 | /* Flag all breakpoint locations with this address and | |
12088 | the same program space as the location | |
12089 | as "its condition has changed". We need to | |
12090 | update the conditions on the target's side. */ | |
12091 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12092 | { | |
12093 | loc = *loc2p; | |
12094 | ||
12095 | if (!is_breakpoint (loc->owner) | |
12096 | || pspace_num != loc->pspace->num) | |
12097 | continue; | |
12098 | ||
12099 | /* Flag the location appropriately. We use a different state to | |
12100 | let everyone know that we already updated the set of locations | |
12101 | with addr bl->address and program space bl->pspace. This is so | |
12102 | we don't have to keep calling these functions just to mark locations | |
12103 | that have already been marked. */ | |
12104 | loc->condition_changed = condition_updated; | |
12105 | ||
12106 | /* Free the agent expression bytecode as well. We will compute | |
12107 | it later on. */ | |
12108 | if (loc->cond_bytecode) | |
12109 | { | |
12110 | free_agent_expr (loc->cond_bytecode); | |
12111 | loc->cond_bytecode = NULL; | |
12112 | } | |
12113 | } | |
12114 | } | |
44702360 PA |
12115 | /* Called whether new breakpoints are created, or existing breakpoints |
12116 | deleted, to update the global location list and recompute which | |
12117 | locations are duplicate of which. | |
b775012e | 12118 | |
04086b45 PA |
12119 | The INSERT_MODE flag determines whether locations may not, may, or |
12120 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
12121 | info. */ | |
b60e7edf | 12122 | |
0d381245 | 12123 | static void |
44702360 | 12124 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 12125 | { |
74960c60 | 12126 | struct breakpoint *b; |
876fa593 | 12127 | struct bp_location **locp, *loc; |
f7545552 | 12128 | struct cleanup *cleanups; |
b775012e LM |
12129 | /* Last breakpoint location address that was marked for update. */ |
12130 | CORE_ADDR last_addr = 0; | |
12131 | /* Last breakpoint location program space that was marked for update. */ | |
12132 | int last_pspace_num = -1; | |
f7545552 | 12133 | |
2d134ed3 PA |
12134 | /* Used in the duplicates detection below. When iterating over all |
12135 | bp_locations, points to the first bp_location of a given address. | |
12136 | Breakpoints and watchpoints of different types are never | |
12137 | duplicates of each other. Keep one pointer for each type of | |
12138 | breakpoint/watchpoint, so we only need to loop over all locations | |
12139 | once. */ | |
12140 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12141 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12142 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12143 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12144 | |
4a64f543 MS |
12145 | /* Saved former bp_location array which we compare against the newly |
12146 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12147 | struct bp_location **old_location, **old_locp; |
12148 | unsigned old_location_count; | |
12149 | ||
12150 | old_location = bp_location; | |
12151 | old_location_count = bp_location_count; | |
12152 | bp_location = NULL; | |
12153 | bp_location_count = 0; | |
12154 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12155 | |
74960c60 | 12156 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12157 | for (loc = b->loc; loc; loc = loc->next) |
12158 | bp_location_count++; | |
12159 | ||
12160 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12161 | locp = bp_location; | |
12162 | ALL_BREAKPOINTS (b) | |
12163 | for (loc = b->loc; loc; loc = loc->next) | |
12164 | *locp++ = loc; | |
12165 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12166 | bp_location_compare); |
876fa593 JK |
12167 | |
12168 | bp_location_target_extensions_update (); | |
74960c60 | 12169 | |
4a64f543 MS |
12170 | /* Identify bp_location instances that are no longer present in the |
12171 | new list, and therefore should be freed. Note that it's not | |
12172 | necessary that those locations should be removed from inferior -- | |
12173 | if there's another location at the same address (previously | |
12174 | marked as duplicate), we don't need to remove/insert the | |
12175 | location. | |
876fa593 | 12176 | |
4a64f543 MS |
12177 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12178 | and former bp_location array state respectively. */ | |
876fa593 JK |
12179 | |
12180 | locp = bp_location; | |
12181 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12182 | old_locp++) | |
74960c60 | 12183 | { |
876fa593 | 12184 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12185 | struct bp_location **loc2p; |
876fa593 | 12186 | |
e5dd4106 | 12187 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12188 | not, we have to free it. */ |
c7d46a38 | 12189 | int found_object = 0; |
20874c92 VP |
12190 | /* Tells if the location should remain inserted in the target. */ |
12191 | int keep_in_target = 0; | |
12192 | int removed = 0; | |
876fa593 | 12193 | |
4a64f543 MS |
12194 | /* Skip LOCP entries which will definitely never be needed. |
12195 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12196 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12197 | && (*locp)->address < old_loc->address) |
876fa593 | 12198 | locp++; |
c7d46a38 PA |
12199 | |
12200 | for (loc2p = locp; | |
12201 | (loc2p < bp_location + bp_location_count | |
12202 | && (*loc2p)->address == old_loc->address); | |
12203 | loc2p++) | |
12204 | { | |
b775012e LM |
12205 | /* Check if this is a new/duplicated location or a duplicated |
12206 | location that had its condition modified. If so, we want to send | |
12207 | its condition to the target if evaluation of conditions is taking | |
12208 | place there. */ | |
12209 | if ((*loc2p)->condition_changed == condition_modified | |
12210 | && (last_addr != old_loc->address | |
12211 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12212 | { |
b775012e LM |
12213 | force_breakpoint_reinsertion (*loc2p); |
12214 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12215 | } |
b775012e LM |
12216 | |
12217 | if (*loc2p == old_loc) | |
12218 | found_object = 1; | |
c7d46a38 | 12219 | } |
74960c60 | 12220 | |
b775012e LM |
12221 | /* We have already handled this address, update it so that we don't |
12222 | have to go through updates again. */ | |
12223 | last_addr = old_loc->address; | |
12224 | ||
12225 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12226 | if (!found_object) | |
12227 | force_breakpoint_reinsertion (old_loc); | |
12228 | ||
4a64f543 MS |
12229 | /* If this location is no longer present, and inserted, look if |
12230 | there's maybe a new location at the same address. If so, | |
12231 | mark that one inserted, and don't remove this one. This is | |
12232 | needed so that we don't have a time window where a breakpoint | |
12233 | at certain location is not inserted. */ | |
74960c60 | 12234 | |
876fa593 | 12235 | if (old_loc->inserted) |
0d381245 | 12236 | { |
4a64f543 MS |
12237 | /* If the location is inserted now, we might have to remove |
12238 | it. */ | |
74960c60 | 12239 | |
876fa593 | 12240 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12241 | { |
4a64f543 MS |
12242 | /* The location is still present in the location list, |
12243 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12244 | keep_in_target = 1; |
74960c60 VP |
12245 | } |
12246 | else | |
12247 | { | |
b775012e LM |
12248 | /* This location still exists, but it won't be kept in the |
12249 | target since it may have been disabled. We proceed to | |
12250 | remove its target-side condition. */ | |
12251 | ||
4a64f543 MS |
12252 | /* The location is either no longer present, or got |
12253 | disabled. See if there's another location at the | |
12254 | same address, in which case we don't need to remove | |
12255 | this one from the target. */ | |
876fa593 | 12256 | |
2bdf28a0 | 12257 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12258 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12259 | { | |
876fa593 | 12260 | for (loc2p = locp; |
c7d46a38 PA |
12261 | (loc2p < bp_location + bp_location_count |
12262 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12263 | loc2p++) |
12264 | { | |
12265 | struct bp_location *loc2 = *loc2p; | |
12266 | ||
2d134ed3 | 12267 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12268 | { |
85d721b8 PA |
12269 | /* Read watchpoint locations are switched to |
12270 | access watchpoints, if the former are not | |
12271 | supported, but the latter are. */ | |
12272 | if (is_hardware_watchpoint (old_loc->owner)) | |
12273 | { | |
12274 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12275 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12276 | } | |
12277 | ||
934709f0 PW |
12278 | /* loc2 is a duplicated location. We need to check |
12279 | if it should be inserted in case it will be | |
12280 | unduplicated. */ | |
12281 | if (loc2 != old_loc | |
12282 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12283 | { |
934709f0 | 12284 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12285 | keep_in_target = 1; |
12286 | break; | |
12287 | } | |
876fa593 JK |
12288 | } |
12289 | } | |
12290 | } | |
74960c60 VP |
12291 | } |
12292 | ||
20874c92 VP |
12293 | if (!keep_in_target) |
12294 | { | |
876fa593 | 12295 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12296 | { |
4a64f543 MS |
12297 | /* This is just about all we can do. We could keep |
12298 | this location on the global list, and try to | |
12299 | remove it next time, but there's no particular | |
12300 | reason why we will succeed next time. | |
20874c92 | 12301 | |
4a64f543 MS |
12302 | Note that at this point, old_loc->owner is still |
12303 | valid, as delete_breakpoint frees the breakpoint | |
12304 | only after calling us. */ | |
3e43a32a MS |
12305 | printf_filtered (_("warning: Error removing " |
12306 | "breakpoint %d\n"), | |
876fa593 | 12307 | old_loc->owner->number); |
20874c92 VP |
12308 | } |
12309 | removed = 1; | |
12310 | } | |
0d381245 | 12311 | } |
74960c60 VP |
12312 | |
12313 | if (!found_object) | |
1c5cfe86 | 12314 | { |
db82e815 | 12315 | if (removed && non_stop |
1cf4d951 | 12316 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12317 | { |
db82e815 PA |
12318 | /* This location was removed from the target. In |
12319 | non-stop mode, a race condition is possible where | |
12320 | we've removed a breakpoint, but stop events for that | |
12321 | breakpoint are already queued and will arrive later. | |
12322 | We apply an heuristic to be able to distinguish such | |
12323 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12324 | breakpoint location for a bit, and will retire it | |
12325 | after we see some number of events. The theory here | |
12326 | is that reporting of events should, "on the average", | |
12327 | be fair, so after a while we'll see events from all | |
12328 | threads that have anything of interest, and no longer | |
12329 | need to keep this breakpoint location around. We | |
12330 | don't hold locations forever so to reduce chances of | |
12331 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12332 | SIGTRAP. | |
12333 | ||
12334 | The heuristic failing can be disastrous on | |
12335 | decr_pc_after_break targets. | |
12336 | ||
12337 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12338 | if we fail to recognize a late breakpoint SIGTRAP, | |
12339 | because events_till_retirement has reached 0 too | |
12340 | soon, we'll fail to do the PC adjustment, and report | |
12341 | a random SIGTRAP to the user. When the user resumes | |
12342 | the inferior, it will most likely immediately crash | |
2dec564e | 12343 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12344 | corrupted, because of being resumed e.g., in the |
12345 | middle of a multi-byte instruction, or skipped a | |
12346 | one-byte instruction. This was actually seen happen | |
12347 | on native x86-linux, and should be less rare on | |
12348 | targets that do not support new thread events, like | |
12349 | remote, due to the heuristic depending on | |
12350 | thread_count. | |
12351 | ||
12352 | Mistaking a random SIGTRAP for a breakpoint trap | |
12353 | causes similar symptoms (PC adjustment applied when | |
12354 | it shouldn't), but then again, playing with SIGTRAPs | |
12355 | behind the debugger's back is asking for trouble. | |
12356 | ||
12357 | Since hardware watchpoint traps are always | |
12358 | distinguishable from other traps, so we don't need to | |
12359 | apply keep hardware watchpoint moribund locations | |
12360 | around. We simply always ignore hardware watchpoint | |
12361 | traps we can no longer explain. */ | |
12362 | ||
876fa593 JK |
12363 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12364 | old_loc->owner = NULL; | |
20874c92 | 12365 | |
876fa593 | 12366 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12367 | } |
12368 | else | |
f431efe5 PA |
12369 | { |
12370 | old_loc->owner = NULL; | |
12371 | decref_bp_location (&old_loc); | |
12372 | } | |
20874c92 | 12373 | } |
74960c60 | 12374 | } |
1c5cfe86 | 12375 | |
348d480f PA |
12376 | /* Rescan breakpoints at the same address and section, marking the |
12377 | first one as "first" and any others as "duplicates". This is so | |
12378 | that the bpt instruction is only inserted once. If we have a | |
12379 | permanent breakpoint at the same place as BPT, make that one the | |
12380 | official one, and the rest as duplicates. Permanent breakpoints | |
12381 | are sorted first for the same address. | |
12382 | ||
12383 | Do the same for hardware watchpoints, but also considering the | |
12384 | watchpoint's type (regular/access/read) and length. */ | |
12385 | ||
12386 | bp_loc_first = NULL; | |
12387 | wp_loc_first = NULL; | |
12388 | awp_loc_first = NULL; | |
12389 | rwp_loc_first = NULL; | |
12390 | ALL_BP_LOCATIONS (loc, locp) | |
12391 | { | |
12392 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12393 | non-NULL. */ | |
348d480f | 12394 | struct bp_location **loc_first_p; |
d3fbdd86 | 12395 | b = loc->owner; |
348d480f | 12396 | |
6f380991 | 12397 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12398 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12399 | /* Don't detect duplicate for tracepoint locations because they are |
12400 | never duplicated. See the comments in field `duplicate' of | |
12401 | `struct bp_location'. */ | |
348d480f | 12402 | || is_tracepoint (b)) |
b775012e LM |
12403 | { |
12404 | /* Clear the condition modification flag. */ | |
12405 | loc->condition_changed = condition_unchanged; | |
12406 | continue; | |
12407 | } | |
348d480f | 12408 | |
348d480f PA |
12409 | if (b->type == bp_hardware_watchpoint) |
12410 | loc_first_p = &wp_loc_first; | |
12411 | else if (b->type == bp_read_watchpoint) | |
12412 | loc_first_p = &rwp_loc_first; | |
12413 | else if (b->type == bp_access_watchpoint) | |
12414 | loc_first_p = &awp_loc_first; | |
12415 | else | |
12416 | loc_first_p = &bp_loc_first; | |
12417 | ||
12418 | if (*loc_first_p == NULL | |
12419 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12420 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12421 | { | |
12422 | *loc_first_p = loc; | |
12423 | loc->duplicate = 0; | |
b775012e LM |
12424 | |
12425 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12426 | { | |
12427 | loc->needs_update = 1; | |
12428 | /* Clear the condition modification flag. */ | |
12429 | loc->condition_changed = condition_unchanged; | |
12430 | } | |
348d480f PA |
12431 | continue; |
12432 | } | |
12433 | ||
934709f0 PW |
12434 | |
12435 | /* This and the above ensure the invariant that the first location | |
12436 | is not duplicated, and is the inserted one. | |
12437 | All following are marked as duplicated, and are not inserted. */ | |
12438 | if (loc->inserted) | |
12439 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12440 | loc->duplicate = 1; |
12441 | ||
b775012e LM |
12442 | /* Clear the condition modification flag. */ |
12443 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12444 | } |
12445 | ||
a25a5a45 | 12446 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12447 | { |
04086b45 | 12448 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12449 | insert_breakpoint_locations (); |
12450 | else | |
12451 | { | |
44702360 PA |
12452 | /* Even though the caller told us to not insert new |
12453 | locations, we may still need to update conditions on the | |
12454 | target's side of breakpoints that were already inserted | |
12455 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12456 | only update conditions for locations that are marked |
12457 | "needs_update". */ | |
12458 | update_inserted_breakpoint_locations (); | |
12459 | } | |
12460 | } | |
348d480f | 12461 | |
04086b45 | 12462 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 YQ |
12463 | download_tracepoint_locations (); |
12464 | ||
348d480f PA |
12465 | do_cleanups (cleanups); |
12466 | } | |
12467 | ||
12468 | void | |
12469 | breakpoint_retire_moribund (void) | |
12470 | { | |
12471 | struct bp_location *loc; | |
12472 | int ix; | |
12473 | ||
12474 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12475 | if (--(loc->events_till_retirement) == 0) | |
12476 | { | |
12477 | decref_bp_location (&loc); | |
12478 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12479 | --ix; | |
12480 | } | |
12481 | } | |
12482 | ||
12483 | static void | |
44702360 | 12484 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12485 | { |
348d480f | 12486 | |
492d29ea PA |
12487 | TRY |
12488 | { | |
12489 | update_global_location_list (insert_mode); | |
12490 | } | |
12491 | CATCH (e, RETURN_MASK_ERROR) | |
12492 | { | |
12493 | } | |
12494 | END_CATCH | |
348d480f PA |
12495 | } |
12496 | ||
12497 | /* Clear BKP from a BPS. */ | |
12498 | ||
12499 | static void | |
12500 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12501 | { | |
12502 | bpstat bs; | |
12503 | ||
12504 | for (bs = bps; bs; bs = bs->next) | |
12505 | if (bs->breakpoint_at == bpt) | |
12506 | { | |
12507 | bs->breakpoint_at = NULL; | |
12508 | bs->old_val = NULL; | |
12509 | /* bs->commands will be freed later. */ | |
12510 | } | |
12511 | } | |
12512 | ||
12513 | /* Callback for iterate_over_threads. */ | |
12514 | static int | |
12515 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12516 | { | |
12517 | struct breakpoint *bpt = data; | |
12518 | ||
12519 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12520 | return 0; | |
12521 | } | |
12522 | ||
12523 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12524 | callbacks. */ | |
12525 | ||
12526 | static void | |
12527 | say_where (struct breakpoint *b) | |
12528 | { | |
12529 | struct value_print_options opts; | |
12530 | ||
12531 | get_user_print_options (&opts); | |
12532 | ||
12533 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12534 | single string. */ | |
12535 | if (b->loc == NULL) | |
12536 | { | |
12537 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12538 | } | |
12539 | else | |
12540 | { | |
2f202fde | 12541 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12542 | { |
12543 | printf_filtered (" at "); | |
12544 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12545 | gdb_stdout); | |
12546 | } | |
2f202fde | 12547 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12548 | { |
12549 | /* If there is a single location, we can print the location | |
12550 | more nicely. */ | |
12551 | if (b->loc->next == NULL) | |
12552 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12553 | symtab_to_filename_for_display (b->loc->symtab), |
12554 | b->loc->line_number); | |
f8eba3c6 TT |
12555 | else |
12556 | /* This is not ideal, but each location may have a | |
12557 | different file name, and this at least reflects the | |
12558 | real situation somewhat. */ | |
12559 | printf_filtered (": %s.", b->addr_string); | |
12560 | } | |
348d480f PA |
12561 | |
12562 | if (b->loc->next) | |
12563 | { | |
12564 | struct bp_location *loc = b->loc; | |
12565 | int n = 0; | |
12566 | for (; loc; loc = loc->next) | |
12567 | ++n; | |
12568 | printf_filtered (" (%d locations)", n); | |
12569 | } | |
12570 | } | |
12571 | } | |
12572 | ||
348d480f PA |
12573 | /* Default bp_location_ops methods. */ |
12574 | ||
12575 | static void | |
12576 | bp_location_dtor (struct bp_location *self) | |
12577 | { | |
12578 | xfree (self->cond); | |
b775012e LM |
12579 | if (self->cond_bytecode) |
12580 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12581 | xfree (self->function_name); |
8b4f3082 PA |
12582 | |
12583 | VEC_free (agent_expr_p, self->target_info.conditions); | |
12584 | VEC_free (agent_expr_p, self->target_info.tcommands); | |
348d480f PA |
12585 | } |
12586 | ||
12587 | static const struct bp_location_ops bp_location_ops = | |
12588 | { | |
12589 | bp_location_dtor | |
12590 | }; | |
12591 | ||
2060206e PA |
12592 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12593 | inherit from. */ | |
348d480f | 12594 | |
2060206e PA |
12595 | static void |
12596 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12597 | { |
12598 | decref_counted_command_line (&self->commands); | |
12599 | xfree (self->cond_string); | |
fb81d016 | 12600 | xfree (self->extra_string); |
348d480f | 12601 | xfree (self->addr_string); |
f8eba3c6 | 12602 | xfree (self->filter); |
348d480f | 12603 | xfree (self->addr_string_range_end); |
348d480f PA |
12604 | } |
12605 | ||
2060206e PA |
12606 | static struct bp_location * |
12607 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12608 | { |
12609 | struct bp_location *loc; | |
12610 | ||
12611 | loc = XNEW (struct bp_location); | |
12612 | init_bp_location (loc, &bp_location_ops, self); | |
12613 | return loc; | |
12614 | } | |
12615 | ||
2060206e PA |
12616 | static void |
12617 | base_breakpoint_re_set (struct breakpoint *b) | |
12618 | { | |
12619 | /* Nothing to re-set. */ | |
12620 | } | |
12621 | ||
12622 | #define internal_error_pure_virtual_called() \ | |
12623 | gdb_assert_not_reached ("pure virtual function called") | |
12624 | ||
12625 | static int | |
12626 | base_breakpoint_insert_location (struct bp_location *bl) | |
12627 | { | |
12628 | internal_error_pure_virtual_called (); | |
12629 | } | |
12630 | ||
12631 | static int | |
12632 | base_breakpoint_remove_location (struct bp_location *bl) | |
12633 | { | |
12634 | internal_error_pure_virtual_called (); | |
12635 | } | |
12636 | ||
12637 | static int | |
12638 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12639 | struct address_space *aspace, | |
09ac7c10 TT |
12640 | CORE_ADDR bp_addr, |
12641 | const struct target_waitstatus *ws) | |
2060206e PA |
12642 | { |
12643 | internal_error_pure_virtual_called (); | |
12644 | } | |
12645 | ||
12646 | static void | |
12647 | base_breakpoint_check_status (bpstat bs) | |
12648 | { | |
12649 | /* Always stop. */ | |
12650 | } | |
12651 | ||
12652 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12653 | errors. */ | |
12654 | ||
12655 | static int | |
12656 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12657 | { | |
12658 | internal_error_pure_virtual_called (); | |
12659 | } | |
12660 | ||
12661 | /* A "resources_needed" breakpoint_ops method that just internal | |
12662 | errors. */ | |
12663 | ||
12664 | static int | |
12665 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12666 | { | |
12667 | internal_error_pure_virtual_called (); | |
12668 | } | |
12669 | ||
12670 | static enum print_stop_action | |
12671 | base_breakpoint_print_it (bpstat bs) | |
12672 | { | |
12673 | internal_error_pure_virtual_called (); | |
12674 | } | |
12675 | ||
12676 | static void | |
12677 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12678 | struct ui_out *uiout) | |
12679 | { | |
12680 | /* nothing */ | |
12681 | } | |
12682 | ||
12683 | static void | |
12684 | base_breakpoint_print_mention (struct breakpoint *b) | |
12685 | { | |
12686 | internal_error_pure_virtual_called (); | |
12687 | } | |
12688 | ||
12689 | static void | |
12690 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12691 | { | |
12692 | internal_error_pure_virtual_called (); | |
12693 | } | |
12694 | ||
983af33b SDJ |
12695 | static void |
12696 | base_breakpoint_create_sals_from_address (char **arg, | |
12697 | struct linespec_result *canonical, | |
12698 | enum bptype type_wanted, | |
12699 | char *addr_start, | |
12700 | char **copy_arg) | |
12701 | { | |
12702 | internal_error_pure_virtual_called (); | |
12703 | } | |
12704 | ||
12705 | static void | |
12706 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12707 | struct linespec_result *c, | |
983af33b | 12708 | char *cond_string, |
e7e0cddf | 12709 | char *extra_string, |
983af33b SDJ |
12710 | enum bptype type_wanted, |
12711 | enum bpdisp disposition, | |
12712 | int thread, | |
12713 | int task, int ignore_count, | |
12714 | const struct breakpoint_ops *o, | |
12715 | int from_tty, int enabled, | |
44f238bb | 12716 | int internal, unsigned flags) |
983af33b SDJ |
12717 | { |
12718 | internal_error_pure_virtual_called (); | |
12719 | } | |
12720 | ||
12721 | static void | |
12722 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12723 | struct symtabs_and_lines *sals) | |
12724 | { | |
12725 | internal_error_pure_virtual_called (); | |
12726 | } | |
12727 | ||
ab04a2af TT |
12728 | /* The default 'explains_signal' method. */ |
12729 | ||
47591c29 | 12730 | static int |
427cd150 | 12731 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12732 | { |
47591c29 | 12733 | return 1; |
ab04a2af TT |
12734 | } |
12735 | ||
9d6e6e84 HZ |
12736 | /* The default "after_condition_true" method. */ |
12737 | ||
12738 | static void | |
12739 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12740 | { | |
12741 | /* Nothing to do. */ | |
12742 | } | |
12743 | ||
ab04a2af | 12744 | struct breakpoint_ops base_breakpoint_ops = |
2060206e PA |
12745 | { |
12746 | base_breakpoint_dtor, | |
12747 | base_breakpoint_allocate_location, | |
12748 | base_breakpoint_re_set, | |
12749 | base_breakpoint_insert_location, | |
12750 | base_breakpoint_remove_location, | |
12751 | base_breakpoint_breakpoint_hit, | |
12752 | base_breakpoint_check_status, | |
12753 | base_breakpoint_resources_needed, | |
12754 | base_breakpoint_works_in_software_mode, | |
12755 | base_breakpoint_print_it, | |
12756 | NULL, | |
12757 | base_breakpoint_print_one_detail, | |
12758 | base_breakpoint_print_mention, | |
983af33b SDJ |
12759 | base_breakpoint_print_recreate, |
12760 | base_breakpoint_create_sals_from_address, | |
12761 | base_breakpoint_create_breakpoints_sal, | |
12762 | base_breakpoint_decode_linespec, | |
9d6e6e84 HZ |
12763 | base_breakpoint_explains_signal, |
12764 | base_breakpoint_after_condition_true, | |
2060206e PA |
12765 | }; |
12766 | ||
12767 | /* Default breakpoint_ops methods. */ | |
12768 | ||
12769 | static void | |
348d480f PA |
12770 | bkpt_re_set (struct breakpoint *b) |
12771 | { | |
06edf0c0 PA |
12772 | /* FIXME: is this still reachable? */ |
12773 | if (b->addr_string == NULL) | |
12774 | { | |
12775 | /* Anything without a string can't be re-set. */ | |
348d480f | 12776 | delete_breakpoint (b); |
06edf0c0 | 12777 | return; |
348d480f | 12778 | } |
06edf0c0 PA |
12779 | |
12780 | breakpoint_re_set_default (b); | |
348d480f PA |
12781 | } |
12782 | ||
2060206e | 12783 | static int |
348d480f PA |
12784 | bkpt_insert_location (struct bp_location *bl) |
12785 | { | |
12786 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
7c16b83e | 12787 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12788 | else |
7c16b83e | 12789 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12790 | } |
12791 | ||
2060206e | 12792 | static int |
348d480f PA |
12793 | bkpt_remove_location (struct bp_location *bl) |
12794 | { | |
12795 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12796 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12797 | else | |
7c16b83e | 12798 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12799 | } |
12800 | ||
2060206e | 12801 | static int |
348d480f | 12802 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12803 | struct address_space *aspace, CORE_ADDR bp_addr, |
12804 | const struct target_waitstatus *ws) | |
348d480f | 12805 | { |
09ac7c10 | 12806 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12807 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12808 | return 0; |
12809 | ||
348d480f PA |
12810 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12811 | aspace, bp_addr)) | |
12812 | return 0; | |
12813 | ||
12814 | if (overlay_debugging /* unmapped overlay section */ | |
12815 | && section_is_overlay (bl->section) | |
12816 | && !section_is_mapped (bl->section)) | |
12817 | return 0; | |
12818 | ||
12819 | return 1; | |
12820 | } | |
12821 | ||
cd1608cc PA |
12822 | static int |
12823 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
12824 | struct address_space *aspace, CORE_ADDR bp_addr, | |
12825 | const struct target_waitstatus *ws) | |
12826 | { | |
12827 | if (dprintf_style == dprintf_style_agent | |
12828 | && target_can_run_breakpoint_commands ()) | |
12829 | { | |
12830 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12831 | for this address it must be for a breakpoint that happens to | |
12832 | be set at the same address. */ | |
12833 | return 0; | |
12834 | } | |
12835 | ||
12836 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12837 | } | |
12838 | ||
2060206e | 12839 | static int |
348d480f PA |
12840 | bkpt_resources_needed (const struct bp_location *bl) |
12841 | { | |
12842 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12843 | ||
12844 | return 1; | |
12845 | } | |
12846 | ||
2060206e | 12847 | static enum print_stop_action |
348d480f PA |
12848 | bkpt_print_it (bpstat bs) |
12849 | { | |
348d480f PA |
12850 | struct breakpoint *b; |
12851 | const struct bp_location *bl; | |
001c8c33 | 12852 | int bp_temp; |
79a45e25 | 12853 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12854 | |
12855 | gdb_assert (bs->bp_location_at != NULL); | |
12856 | ||
12857 | bl = bs->bp_location_at; | |
12858 | b = bs->breakpoint_at; | |
12859 | ||
001c8c33 PA |
12860 | bp_temp = b->disposition == disp_del; |
12861 | if (bl->address != bl->requested_address) | |
12862 | breakpoint_adjustment_warning (bl->requested_address, | |
12863 | bl->address, | |
12864 | b->number, 1); | |
12865 | annotate_breakpoint (b->number); | |
12866 | if (bp_temp) | |
12867 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12868 | else | |
12869 | ui_out_text (uiout, "\nBreakpoint "); | |
12870 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12871 | { |
001c8c33 PA |
12872 | ui_out_field_string (uiout, "reason", |
12873 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12874 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12875 | } |
001c8c33 PA |
12876 | ui_out_field_int (uiout, "bkptno", b->number); |
12877 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12878 | |
001c8c33 | 12879 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12880 | } |
12881 | ||
2060206e | 12882 | static void |
06edf0c0 PA |
12883 | bkpt_print_mention (struct breakpoint *b) |
12884 | { | |
79a45e25 | 12885 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12886 | return; |
12887 | ||
12888 | switch (b->type) | |
12889 | { | |
12890 | case bp_breakpoint: | |
12891 | case bp_gnu_ifunc_resolver: | |
12892 | if (b->disposition == disp_del) | |
12893 | printf_filtered (_("Temporary breakpoint")); | |
12894 | else | |
12895 | printf_filtered (_("Breakpoint")); | |
12896 | printf_filtered (_(" %d"), b->number); | |
12897 | if (b->type == bp_gnu_ifunc_resolver) | |
12898 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12899 | break; | |
12900 | case bp_hardware_breakpoint: | |
12901 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12902 | break; | |
e7e0cddf SS |
12903 | case bp_dprintf: |
12904 | printf_filtered (_("Dprintf %d"), b->number); | |
12905 | break; | |
06edf0c0 PA |
12906 | } |
12907 | ||
12908 | say_where (b); | |
12909 | } | |
12910 | ||
2060206e | 12911 | static void |
06edf0c0 PA |
12912 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12913 | { | |
12914 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12915 | fprintf_unfiltered (fp, "tbreak"); | |
12916 | else if (tp->type == bp_breakpoint) | |
12917 | fprintf_unfiltered (fp, "break"); | |
12918 | else if (tp->type == bp_hardware_breakpoint | |
12919 | && tp->disposition == disp_del) | |
12920 | fprintf_unfiltered (fp, "thbreak"); | |
12921 | else if (tp->type == bp_hardware_breakpoint) | |
12922 | fprintf_unfiltered (fp, "hbreak"); | |
12923 | else | |
12924 | internal_error (__FILE__, __LINE__, | |
12925 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12926 | ||
2060206e | 12927 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 12928 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12929 | } |
12930 | ||
983af33b SDJ |
12931 | static void |
12932 | bkpt_create_sals_from_address (char **arg, | |
12933 | struct linespec_result *canonical, | |
12934 | enum bptype type_wanted, | |
12935 | char *addr_start, char **copy_arg) | |
12936 | { | |
12937 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12938 | addr_start, copy_arg); | |
12939 | } | |
12940 | ||
12941 | static void | |
12942 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12943 | struct linespec_result *canonical, | |
983af33b | 12944 | char *cond_string, |
e7e0cddf | 12945 | char *extra_string, |
983af33b SDJ |
12946 | enum bptype type_wanted, |
12947 | enum bpdisp disposition, | |
12948 | int thread, | |
12949 | int task, int ignore_count, | |
12950 | const struct breakpoint_ops *ops, | |
12951 | int from_tty, int enabled, | |
44f238bb | 12952 | int internal, unsigned flags) |
983af33b | 12953 | { |
023fa29b | 12954 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
12955 | cond_string, extra_string, |
12956 | type_wanted, | |
983af33b SDJ |
12957 | disposition, thread, task, |
12958 | ignore_count, ops, from_tty, | |
44f238bb | 12959 | enabled, internal, flags); |
983af33b SDJ |
12960 | } |
12961 | ||
12962 | static void | |
12963 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
12964 | struct symtabs_and_lines *sals) | |
12965 | { | |
12966 | decode_linespec_default (b, s, sals); | |
12967 | } | |
12968 | ||
06edf0c0 PA |
12969 | /* Virtual table for internal breakpoints. */ |
12970 | ||
12971 | static void | |
12972 | internal_bkpt_re_set (struct breakpoint *b) | |
12973 | { | |
12974 | switch (b->type) | |
12975 | { | |
12976 | /* Delete overlay event and longjmp master breakpoints; they | |
12977 | will be reset later by breakpoint_re_set. */ | |
12978 | case bp_overlay_event: | |
12979 | case bp_longjmp_master: | |
12980 | case bp_std_terminate_master: | |
12981 | case bp_exception_master: | |
12982 | delete_breakpoint (b); | |
12983 | break; | |
12984 | ||
12985 | /* This breakpoint is special, it's set up when the inferior | |
12986 | starts and we really don't want to touch it. */ | |
12987 | case bp_shlib_event: | |
12988 | ||
12989 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12990 | it is set up, we do not want to touch it. */ | |
12991 | case bp_thread_event: | |
12992 | break; | |
12993 | } | |
12994 | } | |
12995 | ||
12996 | static void | |
12997 | internal_bkpt_check_status (bpstat bs) | |
12998 | { | |
a9b3a50f PA |
12999 | if (bs->breakpoint_at->type == bp_shlib_event) |
13000 | { | |
13001 | /* If requested, stop when the dynamic linker notifies GDB of | |
13002 | events. This allows the user to get control and place | |
13003 | breakpoints in initializer routines for dynamically loaded | |
13004 | objects (among other things). */ | |
13005 | bs->stop = stop_on_solib_events; | |
13006 | bs->print = stop_on_solib_events; | |
13007 | } | |
13008 | else | |
13009 | bs->stop = 0; | |
06edf0c0 PA |
13010 | } |
13011 | ||
13012 | static enum print_stop_action | |
13013 | internal_bkpt_print_it (bpstat bs) | |
13014 | { | |
06edf0c0 | 13015 | struct breakpoint *b; |
06edf0c0 | 13016 | |
06edf0c0 PA |
13017 | b = bs->breakpoint_at; |
13018 | ||
06edf0c0 PA |
13019 | switch (b->type) |
13020 | { | |
348d480f PA |
13021 | case bp_shlib_event: |
13022 | /* Did we stop because the user set the stop_on_solib_events | |
13023 | variable? (If so, we report this as a generic, "Stopped due | |
13024 | to shlib event" message.) */ | |
edcc5120 | 13025 | print_solib_event (0); |
348d480f PA |
13026 | break; |
13027 | ||
13028 | case bp_thread_event: | |
13029 | /* Not sure how we will get here. | |
13030 | GDB should not stop for these breakpoints. */ | |
13031 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13032 | break; |
13033 | ||
13034 | case bp_overlay_event: | |
13035 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13036 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13037 | break; |
13038 | ||
13039 | case bp_longjmp_master: | |
13040 | /* These should never be enabled. */ | |
13041 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13042 | break; |
13043 | ||
13044 | case bp_std_terminate_master: | |
13045 | /* These should never be enabled. */ | |
13046 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13047 | "gdb should not stop!\n")); | |
348d480f PA |
13048 | break; |
13049 | ||
13050 | case bp_exception_master: | |
13051 | /* These should never be enabled. */ | |
13052 | printf_filtered (_("Exception Master Breakpoint: " | |
13053 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13054 | break; |
13055 | } | |
13056 | ||
001c8c33 | 13057 | return PRINT_NOTHING; |
06edf0c0 PA |
13058 | } |
13059 | ||
13060 | static void | |
13061 | internal_bkpt_print_mention (struct breakpoint *b) | |
13062 | { | |
13063 | /* Nothing to mention. These breakpoints are internal. */ | |
13064 | } | |
13065 | ||
06edf0c0 PA |
13066 | /* Virtual table for momentary breakpoints */ |
13067 | ||
13068 | static void | |
13069 | momentary_bkpt_re_set (struct breakpoint *b) | |
13070 | { | |
13071 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13072 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13073 | Otherwise these should have been blown away via the cleanup chain |
13074 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13075 | } | |
13076 | ||
13077 | static void | |
13078 | momentary_bkpt_check_status (bpstat bs) | |
13079 | { | |
13080 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13081 | } | |
13082 | ||
13083 | static enum print_stop_action | |
13084 | momentary_bkpt_print_it (bpstat bs) | |
13085 | { | |
79a45e25 PA |
13086 | struct ui_out *uiout = current_uiout; |
13087 | ||
001c8c33 | 13088 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13089 | { |
001c8c33 | 13090 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13091 | |
001c8c33 PA |
13092 | switch (b->type) |
13093 | { | |
13094 | case bp_finish: | |
13095 | ui_out_field_string | |
13096 | (uiout, "reason", | |
13097 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13098 | break; | |
348d480f | 13099 | |
001c8c33 PA |
13100 | case bp_until: |
13101 | ui_out_field_string | |
13102 | (uiout, "reason", | |
13103 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13104 | break; | |
13105 | } | |
348d480f PA |
13106 | } |
13107 | ||
001c8c33 | 13108 | return PRINT_UNKNOWN; |
348d480f PA |
13109 | } |
13110 | ||
06edf0c0 PA |
13111 | static void |
13112 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13113 | { |
06edf0c0 | 13114 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13115 | } |
13116 | ||
e2e4d78b JK |
13117 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13118 | ||
13119 | It gets cleared already on the removal of the first one of such placed | |
13120 | breakpoints. This is OK as they get all removed altogether. */ | |
13121 | ||
13122 | static void | |
13123 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13124 | { | |
13125 | struct thread_info *tp = find_thread_id (self->thread); | |
13126 | ||
13127 | if (tp) | |
13128 | tp->initiating_frame = null_frame_id; | |
13129 | ||
13130 | momentary_breakpoint_ops.dtor (self); | |
13131 | } | |
13132 | ||
55aa24fb SDJ |
13133 | /* Specific methods for probe breakpoints. */ |
13134 | ||
13135 | static int | |
13136 | bkpt_probe_insert_location (struct bp_location *bl) | |
13137 | { | |
13138 | int v = bkpt_insert_location (bl); | |
13139 | ||
13140 | if (v == 0) | |
13141 | { | |
13142 | /* The insertion was successful, now let's set the probe's semaphore | |
13143 | if needed. */ | |
0ea5cda8 SDJ |
13144 | if (bl->probe.probe->pops->set_semaphore != NULL) |
13145 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
13146 | bl->probe.objfile, | |
13147 | bl->gdbarch); | |
55aa24fb SDJ |
13148 | } |
13149 | ||
13150 | return v; | |
13151 | } | |
13152 | ||
13153 | static int | |
13154 | bkpt_probe_remove_location (struct bp_location *bl) | |
13155 | { | |
13156 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
13157 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
13158 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
13159 | bl->probe.objfile, | |
13160 | bl->gdbarch); | |
55aa24fb SDJ |
13161 | |
13162 | return bkpt_remove_location (bl); | |
13163 | } | |
13164 | ||
13165 | static void | |
13166 | bkpt_probe_create_sals_from_address (char **arg, | |
13167 | struct linespec_result *canonical, | |
13168 | enum bptype type_wanted, | |
13169 | char *addr_start, char **copy_arg) | |
13170 | { | |
13171 | struct linespec_sals lsal; | |
13172 | ||
13173 | lsal.sals = parse_probes (arg, canonical); | |
13174 | ||
13175 | *copy_arg = xstrdup (canonical->addr_string); | |
13176 | lsal.canonical = xstrdup (*copy_arg); | |
13177 | ||
13178 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13179 | } | |
13180 | ||
13181 | static void | |
13182 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13183 | struct symtabs_and_lines *sals) | |
13184 | { | |
13185 | *sals = parse_probes (s, NULL); | |
13186 | if (!sals->sals) | |
13187 | error (_("probe not found")); | |
13188 | } | |
13189 | ||
348d480f | 13190 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13191 | |
348d480f PA |
13192 | static void |
13193 | tracepoint_re_set (struct breakpoint *b) | |
13194 | { | |
13195 | breakpoint_re_set_default (b); | |
13196 | } | |
876fa593 | 13197 | |
348d480f PA |
13198 | static int |
13199 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13200 | struct address_space *aspace, CORE_ADDR bp_addr, |
13201 | const struct target_waitstatus *ws) | |
348d480f PA |
13202 | { |
13203 | /* By definition, the inferior does not report stops at | |
13204 | tracepoints. */ | |
13205 | return 0; | |
74960c60 VP |
13206 | } |
13207 | ||
13208 | static void | |
348d480f PA |
13209 | tracepoint_print_one_detail (const struct breakpoint *self, |
13210 | struct ui_out *uiout) | |
74960c60 | 13211 | { |
d9b3f62e PA |
13212 | struct tracepoint *tp = (struct tracepoint *) self; |
13213 | if (tp->static_trace_marker_id) | |
348d480f PA |
13214 | { |
13215 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13216 | |
348d480f PA |
13217 | ui_out_text (uiout, "\tmarker id is "); |
13218 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13219 | tp->static_trace_marker_id); |
348d480f PA |
13220 | ui_out_text (uiout, "\n"); |
13221 | } | |
0d381245 VP |
13222 | } |
13223 | ||
a474d7c2 | 13224 | static void |
348d480f | 13225 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13226 | { |
79a45e25 | 13227 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13228 | return; |
cc59ec59 | 13229 | |
348d480f PA |
13230 | switch (b->type) |
13231 | { | |
13232 | case bp_tracepoint: | |
13233 | printf_filtered (_("Tracepoint")); | |
13234 | printf_filtered (_(" %d"), b->number); | |
13235 | break; | |
13236 | case bp_fast_tracepoint: | |
13237 | printf_filtered (_("Fast tracepoint")); | |
13238 | printf_filtered (_(" %d"), b->number); | |
13239 | break; | |
13240 | case bp_static_tracepoint: | |
13241 | printf_filtered (_("Static tracepoint")); | |
13242 | printf_filtered (_(" %d"), b->number); | |
13243 | break; | |
13244 | default: | |
13245 | internal_error (__FILE__, __LINE__, | |
13246 | _("unhandled tracepoint type %d"), (int) b->type); | |
13247 | } | |
13248 | ||
13249 | say_where (b); | |
a474d7c2 PA |
13250 | } |
13251 | ||
348d480f | 13252 | static void |
d9b3f62e | 13253 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13254 | { |
d9b3f62e PA |
13255 | struct tracepoint *tp = (struct tracepoint *) self; |
13256 | ||
13257 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13258 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13259 | if (self->type == bp_static_tracepoint) |
348d480f | 13260 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13261 | else if (self->type == bp_tracepoint) |
348d480f PA |
13262 | fprintf_unfiltered (fp, "trace"); |
13263 | else | |
13264 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13265 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13266 | |
d9b3f62e PA |
13267 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13268 | print_recreate_thread (self, fp); | |
13269 | ||
13270 | if (tp->pass_count) | |
13271 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13272 | } |
13273 | ||
983af33b SDJ |
13274 | static void |
13275 | tracepoint_create_sals_from_address (char **arg, | |
13276 | struct linespec_result *canonical, | |
13277 | enum bptype type_wanted, | |
13278 | char *addr_start, char **copy_arg) | |
13279 | { | |
13280 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13281 | addr_start, copy_arg); | |
13282 | } | |
13283 | ||
13284 | static void | |
13285 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13286 | struct linespec_result *canonical, | |
983af33b | 13287 | char *cond_string, |
e7e0cddf | 13288 | char *extra_string, |
983af33b SDJ |
13289 | enum bptype type_wanted, |
13290 | enum bpdisp disposition, | |
13291 | int thread, | |
13292 | int task, int ignore_count, | |
13293 | const struct breakpoint_ops *ops, | |
13294 | int from_tty, int enabled, | |
44f238bb | 13295 | int internal, unsigned flags) |
983af33b | 13296 | { |
023fa29b | 13297 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13298 | cond_string, extra_string, |
13299 | type_wanted, | |
983af33b SDJ |
13300 | disposition, thread, task, |
13301 | ignore_count, ops, from_tty, | |
44f238bb | 13302 | enabled, internal, flags); |
983af33b SDJ |
13303 | } |
13304 | ||
13305 | static void | |
13306 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13307 | struct symtabs_and_lines *sals) | |
13308 | { | |
13309 | decode_linespec_default (b, s, sals); | |
13310 | } | |
13311 | ||
2060206e | 13312 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13313 | |
55aa24fb SDJ |
13314 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13315 | static probe. */ | |
13316 | ||
13317 | static void | |
13318 | tracepoint_probe_create_sals_from_address (char **arg, | |
13319 | struct linespec_result *canonical, | |
13320 | enum bptype type_wanted, | |
13321 | char *addr_start, char **copy_arg) | |
13322 | { | |
13323 | /* We use the same method for breakpoint on probes. */ | |
13324 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13325 | addr_start, copy_arg); | |
13326 | } | |
13327 | ||
13328 | static void | |
13329 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13330 | struct symtabs_and_lines *sals) | |
13331 | { | |
13332 | /* We use the same method for breakpoint on probes. */ | |
13333 | bkpt_probe_decode_linespec (b, s, sals); | |
13334 | } | |
13335 | ||
13336 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13337 | ||
5c2b4418 HZ |
13338 | /* Dprintf breakpoint_ops methods. */ |
13339 | ||
13340 | static void | |
13341 | dprintf_re_set (struct breakpoint *b) | |
13342 | { | |
13343 | breakpoint_re_set_default (b); | |
13344 | ||
13345 | /* This breakpoint could have been pending, and be resolved now, and | |
13346 | if so, we should now have the extra string. If we don't, the | |
13347 | dprintf was malformed when created, but we couldn't tell because | |
13348 | we can't extract the extra string until the location is | |
13349 | resolved. */ | |
13350 | if (b->loc != NULL && b->extra_string == NULL) | |
13351 | error (_("Format string required")); | |
13352 | ||
13353 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13354 | 2 - create a dprintf, which resolves fine. | |
13355 | 3 - disconnect from target 1 | |
13356 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13357 | ||
13358 | After steps #3/#4, you'll want the dprintf command list to | |
13359 | be updated, because target 1 and 2 may well return different | |
13360 | answers for target_can_run_breakpoint_commands(). | |
13361 | Given absence of finer grained resetting, we get to do | |
13362 | it all the time. */ | |
13363 | if (b->extra_string != NULL) | |
13364 | update_dprintf_command_list (b); | |
13365 | } | |
13366 | ||
2d9442cc HZ |
13367 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13368 | ||
13369 | static void | |
13370 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13371 | { | |
13372 | fprintf_unfiltered (fp, "dprintf %s%s", tp->addr_string, | |
13373 | tp->extra_string); | |
13374 | print_recreate_thread (tp, fp); | |
13375 | } | |
13376 | ||
9d6e6e84 HZ |
13377 | /* Implement the "after_condition_true" breakpoint_ops method for |
13378 | dprintf. | |
13379 | ||
13380 | dprintf's are implemented with regular commands in their command | |
13381 | list, but we run the commands here instead of before presenting the | |
13382 | stop to the user, as dprintf's don't actually cause a stop. This | |
13383 | also makes it so that the commands of multiple dprintfs at the same | |
13384 | address are all handled. */ | |
13385 | ||
13386 | static void | |
13387 | dprintf_after_condition_true (struct bpstats *bs) | |
13388 | { | |
13389 | struct cleanup *old_chain; | |
13390 | struct bpstats tmp_bs = { NULL }; | |
13391 | struct bpstats *tmp_bs_p = &tmp_bs; | |
13392 | ||
13393 | /* dprintf's never cause a stop. This wasn't set in the | |
13394 | check_status hook instead because that would make the dprintf's | |
13395 | condition not be evaluated. */ | |
13396 | bs->stop = 0; | |
13397 | ||
13398 | /* Run the command list here. Take ownership of it instead of | |
13399 | copying. We never want these commands to run later in | |
13400 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13401 | be set at same address as this dprintf, or even if running the | |
13402 | commands here throws. */ | |
13403 | tmp_bs.commands = bs->commands; | |
13404 | bs->commands = NULL; | |
13405 | old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands); | |
13406 | ||
13407 | bpstat_do_actions_1 (&tmp_bs_p); | |
13408 | ||
13409 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13410 | bpstat_do_actions_1 may return early without processing the whole | |
13411 | list. */ | |
13412 | do_cleanups (old_chain); | |
13413 | } | |
13414 | ||
983af33b SDJ |
13415 | /* The breakpoint_ops structure to be used on static tracepoints with |
13416 | markers (`-m'). */ | |
13417 | ||
13418 | static void | |
13419 | strace_marker_create_sals_from_address (char **arg, | |
13420 | struct linespec_result *canonical, | |
13421 | enum bptype type_wanted, | |
13422 | char *addr_start, char **copy_arg) | |
13423 | { | |
13424 | struct linespec_sals lsal; | |
13425 | ||
13426 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13427 | ||
13428 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13429 | ||
13430 | canonical->addr_string = xstrdup (*copy_arg); | |
13431 | lsal.canonical = xstrdup (*copy_arg); | |
13432 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13433 | } | |
13434 | ||
13435 | static void | |
13436 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13437 | struct linespec_result *canonical, | |
983af33b | 13438 | char *cond_string, |
e7e0cddf | 13439 | char *extra_string, |
983af33b SDJ |
13440 | enum bptype type_wanted, |
13441 | enum bpdisp disposition, | |
13442 | int thread, | |
13443 | int task, int ignore_count, | |
13444 | const struct breakpoint_ops *ops, | |
13445 | int from_tty, int enabled, | |
44f238bb | 13446 | int internal, unsigned flags) |
983af33b SDJ |
13447 | { |
13448 | int i; | |
52d361e1 YQ |
13449 | struct linespec_sals *lsal = VEC_index (linespec_sals, |
13450 | canonical->sals, 0); | |
983af33b SDJ |
13451 | |
13452 | /* If the user is creating a static tracepoint by marker id | |
13453 | (strace -m MARKER_ID), then store the sals index, so that | |
13454 | breakpoint_re_set can try to match up which of the newly | |
13455 | found markers corresponds to this one, and, don't try to | |
13456 | expand multiple locations for each sal, given than SALS | |
13457 | already should contain all sals for MARKER_ID. */ | |
13458 | ||
13459 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13460 | { | |
13461 | struct symtabs_and_lines expanded; | |
13462 | struct tracepoint *tp; | |
13463 | struct cleanup *old_chain; | |
13464 | char *addr_string; | |
13465 | ||
13466 | expanded.nelts = 1; | |
13467 | expanded.sals = &lsal->sals.sals[i]; | |
13468 | ||
13469 | addr_string = xstrdup (canonical->addr_string); | |
13470 | old_chain = make_cleanup (xfree, addr_string); | |
13471 | ||
13472 | tp = XCNEW (struct tracepoint); | |
13473 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13474 | addr_string, NULL, | |
e7e0cddf SS |
13475 | cond_string, extra_string, |
13476 | type_wanted, disposition, | |
983af33b | 13477 | thread, task, ignore_count, ops, |
44f238bb | 13478 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13479 | canonical->special_display); |
13480 | /* Given that its possible to have multiple markers with | |
13481 | the same string id, if the user is creating a static | |
13482 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13483 | store the sals index, so that breakpoint_re_set can | |
13484 | try to match up which of the newly found markers | |
13485 | corresponds to this one */ | |
13486 | tp->static_trace_marker_id_idx = i; | |
13487 | ||
13488 | install_breakpoint (internal, &tp->base, 0); | |
13489 | ||
13490 | discard_cleanups (old_chain); | |
13491 | } | |
13492 | } | |
13493 | ||
13494 | static void | |
13495 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13496 | struct symtabs_and_lines *sals) | |
13497 | { | |
13498 | struct tracepoint *tp = (struct tracepoint *) b; | |
13499 | ||
13500 | *sals = decode_static_tracepoint_spec (s); | |
13501 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13502 | { | |
13503 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13504 | sals->nelts = 1; | |
13505 | } | |
13506 | else | |
13507 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13508 | } | |
13509 | ||
13510 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13511 | ||
13512 | static int | |
13513 | strace_marker_p (struct breakpoint *b) | |
13514 | { | |
13515 | return b->ops == &strace_marker_breakpoint_ops; | |
13516 | } | |
13517 | ||
53a5351d | 13518 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13519 | structures. */ |
c906108c SS |
13520 | |
13521 | void | |
fba45db2 | 13522 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13523 | { |
52f0bd74 | 13524 | struct breakpoint *b; |
c906108c | 13525 | |
8a3fe4f8 | 13526 | gdb_assert (bpt != NULL); |
c906108c | 13527 | |
4a64f543 MS |
13528 | /* Has this bp already been deleted? This can happen because |
13529 | multiple lists can hold pointers to bp's. bpstat lists are | |
13530 | especial culprits. | |
13531 | ||
13532 | One example of this happening is a watchpoint's scope bp. When | |
13533 | the scope bp triggers, we notice that the watchpoint is out of | |
13534 | scope, and delete it. We also delete its scope bp. But the | |
13535 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13536 | That bpstat is then checked for auto-deleting bp's, which are | |
13537 | deleted. | |
13538 | ||
13539 | A real solution to this problem might involve reference counts in | |
13540 | bp's, and/or giving them pointers back to their referencing | |
13541 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13542 | storage when no more references were extent. A cheaper bandaid | |
13543 | was chosen. */ | |
c906108c SS |
13544 | if (bpt->type == bp_none) |
13545 | return; | |
13546 | ||
4a64f543 MS |
13547 | /* At least avoid this stale reference until the reference counting |
13548 | of breakpoints gets resolved. */ | |
d0fb5eae | 13549 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13550 | { |
d0fb5eae | 13551 | struct breakpoint *related; |
3a5c3e22 | 13552 | struct watchpoint *w; |
d0fb5eae JK |
13553 | |
13554 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13555 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13556 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13557 | w = (struct watchpoint *) bpt; |
13558 | else | |
13559 | w = NULL; | |
13560 | if (w != NULL) | |
13561 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13562 | |
13563 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13564 | for (related = bpt; related->related_breakpoint != bpt; | |
13565 | related = related->related_breakpoint); | |
13566 | related->related_breakpoint = bpt->related_breakpoint; | |
13567 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13568 | } |
13569 | ||
a9634178 TJB |
13570 | /* watch_command_1 creates a watchpoint but only sets its number if |
13571 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13572 | a problem in that process, we'll be asked to delete the half-created | |
13573 | watchpoint. In that case, don't announce the deletion. */ | |
13574 | if (bpt->number) | |
13575 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13576 | |
c906108c SS |
13577 | if (breakpoint_chain == bpt) |
13578 | breakpoint_chain = bpt->next; | |
13579 | ||
c906108c SS |
13580 | ALL_BREAKPOINTS (b) |
13581 | if (b->next == bpt) | |
c5aa993b JM |
13582 | { |
13583 | b->next = bpt->next; | |
13584 | break; | |
13585 | } | |
c906108c | 13586 | |
f431efe5 PA |
13587 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13588 | been freed. */ | |
13589 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13590 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13591 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13592 | commands are associated with the bpstat; if we remove it here, | |
13593 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13594 | event-top.c won't do anything, and temporary breakpoints with | |
13595 | commands won't work. */ | |
13596 | ||
13597 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13598 | ||
4a64f543 MS |
13599 | /* Now that breakpoint is removed from breakpoint list, update the |
13600 | global location list. This will remove locations that used to | |
13601 | belong to this breakpoint. Do this before freeing the breakpoint | |
13602 | itself, since remove_breakpoint looks at location's owner. It | |
13603 | might be better design to have location completely | |
13604 | self-contained, but it's not the case now. */ | |
44702360 | 13605 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13606 | |
348d480f | 13607 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13608 | /* On the chance that someone will soon try again to delete this |
13609 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13610 | bpt->type = bp_none; |
b8c9b27d | 13611 | xfree (bpt); |
c906108c SS |
13612 | } |
13613 | ||
4d6140d9 AC |
13614 | static void |
13615 | do_delete_breakpoint_cleanup (void *b) | |
13616 | { | |
13617 | delete_breakpoint (b); | |
13618 | } | |
13619 | ||
13620 | struct cleanup * | |
13621 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13622 | { | |
13623 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13624 | } | |
13625 | ||
51be5b68 PA |
13626 | /* Iterator function to call a user-provided callback function once |
13627 | for each of B and its related breakpoints. */ | |
13628 | ||
13629 | static void | |
13630 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13631 | void (*function) (struct breakpoint *, | |
13632 | void *), | |
13633 | void *data) | |
13634 | { | |
13635 | struct breakpoint *related; | |
13636 | ||
13637 | related = b; | |
13638 | do | |
13639 | { | |
13640 | struct breakpoint *next; | |
13641 | ||
13642 | /* FUNCTION may delete RELATED. */ | |
13643 | next = related->related_breakpoint; | |
13644 | ||
13645 | if (next == related) | |
13646 | { | |
13647 | /* RELATED is the last ring entry. */ | |
13648 | function (related, data); | |
13649 | ||
13650 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13651 | B. There's nothing left to do anyway, so just break | |
13652 | out. */ | |
13653 | break; | |
13654 | } | |
13655 | else | |
13656 | function (related, data); | |
13657 | ||
13658 | related = next; | |
13659 | } | |
13660 | while (related != b); | |
13661 | } | |
95a42b64 TT |
13662 | |
13663 | static void | |
13664 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13665 | { | |
13666 | delete_breakpoint (b); | |
13667 | } | |
13668 | ||
51be5b68 PA |
13669 | /* A callback for map_breakpoint_numbers that calls |
13670 | delete_breakpoint. */ | |
13671 | ||
13672 | static void | |
13673 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13674 | { | |
13675 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13676 | } | |
13677 | ||
c906108c | 13678 | void |
fba45db2 | 13679 | delete_command (char *arg, int from_tty) |
c906108c | 13680 | { |
35df4500 | 13681 | struct breakpoint *b, *b_tmp; |
c906108c | 13682 | |
ea9365bb TT |
13683 | dont_repeat (); |
13684 | ||
c906108c SS |
13685 | if (arg == 0) |
13686 | { | |
13687 | int breaks_to_delete = 0; | |
13688 | ||
46c6471b PA |
13689 | /* Delete all breakpoints if no argument. Do not delete |
13690 | internal breakpoints, these have to be deleted with an | |
13691 | explicit breakpoint number argument. */ | |
c5aa993b | 13692 | ALL_BREAKPOINTS (b) |
46c6471b | 13693 | if (user_breakpoint_p (b)) |
973d738b DJ |
13694 | { |
13695 | breaks_to_delete = 1; | |
13696 | break; | |
13697 | } | |
c906108c SS |
13698 | |
13699 | /* Ask user only if there are some breakpoints to delete. */ | |
13700 | if (!from_tty | |
e2e0b3e5 | 13701 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13702 | { |
35df4500 | 13703 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13704 | if (user_breakpoint_p (b)) |
c5aa993b | 13705 | delete_breakpoint (b); |
c906108c SS |
13706 | } |
13707 | } | |
13708 | else | |
51be5b68 | 13709 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13710 | } |
13711 | ||
0d381245 VP |
13712 | static int |
13713 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13714 | { |
0d381245 | 13715 | for (; loc; loc = loc->next) |
8645ff69 UW |
13716 | if (!loc->shlib_disabled |
13717 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13718 | return 0; |
13719 | return 1; | |
fe3f5fa8 VP |
13720 | } |
13721 | ||
776592bf DE |
13722 | /* Subroutine of update_breakpoint_locations to simplify it. |
13723 | Return non-zero if multiple fns in list LOC have the same name. | |
13724 | Null names are ignored. */ | |
13725 | ||
13726 | static int | |
13727 | ambiguous_names_p (struct bp_location *loc) | |
13728 | { | |
13729 | struct bp_location *l; | |
13730 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13731 | (int (*) (const void *, |
13732 | const void *)) streq, | |
776592bf DE |
13733 | NULL, xcalloc, xfree); |
13734 | ||
13735 | for (l = loc; l != NULL; l = l->next) | |
13736 | { | |
13737 | const char **slot; | |
13738 | const char *name = l->function_name; | |
13739 | ||
13740 | /* Allow for some names to be NULL, ignore them. */ | |
13741 | if (name == NULL) | |
13742 | continue; | |
13743 | ||
13744 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13745 | INSERT); | |
4a64f543 MS |
13746 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13747 | returns NULL. */ | |
776592bf DE |
13748 | if (*slot != NULL) |
13749 | { | |
13750 | htab_delete (htab); | |
13751 | return 1; | |
13752 | } | |
13753 | *slot = name; | |
13754 | } | |
13755 | ||
13756 | htab_delete (htab); | |
13757 | return 0; | |
13758 | } | |
13759 | ||
0fb4aa4b PA |
13760 | /* When symbols change, it probably means the sources changed as well, |
13761 | and it might mean the static tracepoint markers are no longer at | |
13762 | the same address or line numbers they used to be at last we | |
13763 | checked. Losing your static tracepoints whenever you rebuild is | |
13764 | undesirable. This function tries to resync/rematch gdb static | |
13765 | tracepoints with the markers on the target, for static tracepoints | |
13766 | that have not been set by marker id. Static tracepoint that have | |
13767 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13768 | The heuristic is: | |
13769 | ||
13770 | 1) For a tracepoint set at a specific address, look for a marker at | |
13771 | the old PC. If one is found there, assume to be the same marker. | |
13772 | If the name / string id of the marker found is different from the | |
13773 | previous known name, assume that means the user renamed the marker | |
13774 | in the sources, and output a warning. | |
13775 | ||
13776 | 2) For a tracepoint set at a given line number, look for a marker | |
13777 | at the new address of the old line number. If one is found there, | |
13778 | assume to be the same marker. If the name / string id of the | |
13779 | marker found is different from the previous known name, assume that | |
13780 | means the user renamed the marker in the sources, and output a | |
13781 | warning. | |
13782 | ||
13783 | 3) If a marker is no longer found at the same address or line, it | |
13784 | may mean the marker no longer exists. But it may also just mean | |
13785 | the code changed a bit. Maybe the user added a few lines of code | |
13786 | that made the marker move up or down (in line number terms). Ask | |
13787 | the target for info about the marker with the string id as we knew | |
13788 | it. If found, update line number and address in the matching | |
13789 | static tracepoint. This will get confused if there's more than one | |
13790 | marker with the same ID (possible in UST, although unadvised | |
13791 | precisely because it confuses tools). */ | |
13792 | ||
13793 | static struct symtab_and_line | |
13794 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13795 | { | |
d9b3f62e | 13796 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13797 | struct static_tracepoint_marker marker; |
13798 | CORE_ADDR pc; | |
0fb4aa4b PA |
13799 | |
13800 | pc = sal.pc; | |
13801 | if (sal.line) | |
13802 | find_line_pc (sal.symtab, sal.line, &pc); | |
13803 | ||
13804 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13805 | { | |
d9b3f62e | 13806 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13807 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13808 | b->number, | |
d9b3f62e | 13809 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13810 | |
d9b3f62e PA |
13811 | xfree (tp->static_trace_marker_id); |
13812 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13813 | release_static_tracepoint_marker (&marker); |
13814 | ||
13815 | return sal; | |
13816 | } | |
13817 | ||
13818 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13819 | by string ID. */ | |
13820 | if (!sal.explicit_pc | |
13821 | && sal.line != 0 | |
13822 | && sal.symtab != NULL | |
d9b3f62e | 13823 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13824 | { |
13825 | VEC(static_tracepoint_marker_p) *markers; | |
13826 | ||
13827 | markers | |
d9b3f62e | 13828 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13829 | |
13830 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13831 | { | |
80e1d417 | 13832 | struct symtab_and_line sal2; |
0fb4aa4b | 13833 | struct symbol *sym; |
80e1d417 | 13834 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13835 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13836 | |
80e1d417 | 13837 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13838 | |
d9b3f62e | 13839 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13840 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13841 | |
13842 | warning (_("marker for static tracepoint %d (%s) not " | |
13843 | "found at previous line number"), | |
d9b3f62e | 13844 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13845 | |
80e1d417 | 13846 | init_sal (&sal2); |
0fb4aa4b | 13847 | |
80e1d417 | 13848 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13849 | |
80e1d417 AS |
13850 | sal2 = find_pc_line (tpmarker->address, 0); |
13851 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13852 | ui_out_text (uiout, "Now in "); |
13853 | if (sym) | |
13854 | { | |
13855 | ui_out_field_string (uiout, "func", | |
13856 | SYMBOL_PRINT_NAME (sym)); | |
13857 | ui_out_text (uiout, " at "); | |
13858 | } | |
05cba821 JK |
13859 | ui_out_field_string (uiout, "file", |
13860 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
13861 | ui_out_text (uiout, ":"); |
13862 | ||
13863 | if (ui_out_is_mi_like_p (uiout)) | |
13864 | { | |
0b0865da | 13865 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13866 | |
f35a17b5 | 13867 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
13868 | } |
13869 | ||
80e1d417 | 13870 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13871 | ui_out_text (uiout, "\n"); |
13872 | ||
80e1d417 | 13873 | b->loc->line_number = sal2.line; |
2f202fde | 13874 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b PA |
13875 | |
13876 | xfree (b->addr_string); | |
13877 | b->addr_string = xstrprintf ("%s:%d", | |
05cba821 | 13878 | symtab_to_filename_for_display (sal2.symtab), |
f8eba3c6 | 13879 | b->loc->line_number); |
0fb4aa4b PA |
13880 | |
13881 | /* Might be nice to check if function changed, and warn if | |
13882 | so. */ | |
13883 | ||
80e1d417 | 13884 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13885 | } |
13886 | } | |
13887 | return sal; | |
13888 | } | |
13889 | ||
8d3788bd VP |
13890 | /* Returns 1 iff locations A and B are sufficiently same that |
13891 | we don't need to report breakpoint as changed. */ | |
13892 | ||
13893 | static int | |
13894 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13895 | { | |
13896 | while (a && b) | |
13897 | { | |
13898 | if (a->address != b->address) | |
13899 | return 0; | |
13900 | ||
13901 | if (a->shlib_disabled != b->shlib_disabled) | |
13902 | return 0; | |
13903 | ||
13904 | if (a->enabled != b->enabled) | |
13905 | return 0; | |
13906 | ||
13907 | a = a->next; | |
13908 | b = b->next; | |
13909 | } | |
13910 | ||
13911 | if ((a == NULL) != (b == NULL)) | |
13912 | return 0; | |
13913 | ||
13914 | return 1; | |
13915 | } | |
13916 | ||
f1310107 TJB |
13917 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13918 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13919 | a ranged breakpoint. */ | |
13920 | ||
0e30163f | 13921 | void |
0d381245 | 13922 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13923 | struct symtabs_and_lines sals, |
13924 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13925 | { |
13926 | int i; | |
0d381245 VP |
13927 | struct bp_location *existing_locations = b->loc; |
13928 | ||
f8eba3c6 TT |
13929 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13930 | { | |
13931 | /* Ranged breakpoints have only one start location and one end | |
13932 | location. */ | |
13933 | b->enable_state = bp_disabled; | |
44702360 | 13934 | update_global_location_list (UGLL_MAY_INSERT); |
f8eba3c6 TT |
13935 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13936 | "multiple locations found\n"), | |
13937 | b->number); | |
13938 | return; | |
13939 | } | |
f1310107 | 13940 | |
4a64f543 MS |
13941 | /* If there's no new locations, and all existing locations are |
13942 | pending, don't do anything. This optimizes the common case where | |
13943 | all locations are in the same shared library, that was unloaded. | |
13944 | We'd like to retain the location, so that when the library is | |
13945 | loaded again, we don't loose the enabled/disabled status of the | |
13946 | individual locations. */ | |
0d381245 | 13947 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13948 | return; |
13949 | ||
fe3f5fa8 VP |
13950 | b->loc = NULL; |
13951 | ||
0d381245 | 13952 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13953 | { |
f8eba3c6 TT |
13954 | struct bp_location *new_loc; |
13955 | ||
13956 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13957 | ||
13958 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13959 | |
0d381245 VP |
13960 | /* Reparse conditions, they might contain references to the |
13961 | old symtab. */ | |
13962 | if (b->cond_string != NULL) | |
13963 | { | |
bbc13ae3 | 13964 | const char *s; |
fe3f5fa8 | 13965 | |
0d381245 | 13966 | s = b->cond_string; |
492d29ea | 13967 | TRY |
0d381245 | 13968 | { |
1bb9788d TT |
13969 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
13970 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
13971 | 0); |
13972 | } | |
492d29ea | 13973 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13974 | { |
3e43a32a MS |
13975 | warning (_("failed to reevaluate condition " |
13976 | "for breakpoint %d: %s"), | |
0d381245 VP |
13977 | b->number, e.message); |
13978 | new_loc->enabled = 0; | |
13979 | } | |
492d29ea | 13980 | END_CATCH |
0d381245 | 13981 | } |
fe3f5fa8 | 13982 | |
f1310107 TJB |
13983 | if (sals_end.nelts) |
13984 | { | |
13985 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
13986 | ||
13987 | new_loc->length = end - sals.sals[0].pc + 1; | |
13988 | } | |
0d381245 | 13989 | } |
fe3f5fa8 | 13990 | |
4a64f543 MS |
13991 | /* If possible, carry over 'disable' status from existing |
13992 | breakpoints. */ | |
0d381245 VP |
13993 | { |
13994 | struct bp_location *e = existing_locations; | |
776592bf DE |
13995 | /* If there are multiple breakpoints with the same function name, |
13996 | e.g. for inline functions, comparing function names won't work. | |
13997 | Instead compare pc addresses; this is just a heuristic as things | |
13998 | may have moved, but in practice it gives the correct answer | |
13999 | often enough until a better solution is found. */ | |
14000 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14001 | ||
0d381245 VP |
14002 | for (; e; e = e->next) |
14003 | { | |
14004 | if (!e->enabled && e->function_name) | |
14005 | { | |
14006 | struct bp_location *l = b->loc; | |
776592bf DE |
14007 | if (have_ambiguous_names) |
14008 | { | |
14009 | for (; l; l = l->next) | |
f1310107 | 14010 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14011 | { |
14012 | l->enabled = 0; | |
14013 | break; | |
14014 | } | |
14015 | } | |
14016 | else | |
14017 | { | |
14018 | for (; l; l = l->next) | |
14019 | if (l->function_name | |
14020 | && strcmp (e->function_name, l->function_name) == 0) | |
14021 | { | |
14022 | l->enabled = 0; | |
14023 | break; | |
14024 | } | |
14025 | } | |
0d381245 VP |
14026 | } |
14027 | } | |
14028 | } | |
fe3f5fa8 | 14029 | |
8d3788bd VP |
14030 | if (!locations_are_equal (existing_locations, b->loc)) |
14031 | observer_notify_breakpoint_modified (b); | |
14032 | ||
44702360 | 14033 | update_global_location_list (UGLL_MAY_INSERT); |
fe3f5fa8 VP |
14034 | } |
14035 | ||
ef23e705 TJB |
14036 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14037 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14038 | ||
14039 | static struct symtabs_and_lines | |
14040 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14041 | { | |
14042 | char *s; | |
02d20e4a | 14043 | struct symtabs_and_lines sals = {0}; |
492d29ea | 14044 | struct gdb_exception exception = exception_none; |
ef23e705 | 14045 | |
983af33b | 14046 | gdb_assert (b->ops != NULL); |
ef23e705 | 14047 | s = addr_string; |
ef23e705 | 14048 | |
492d29ea | 14049 | TRY |
ef23e705 | 14050 | { |
983af33b | 14051 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 | 14052 | } |
492d29ea | 14053 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
14054 | { |
14055 | int not_found_and_ok = 0; | |
492d29ea PA |
14056 | |
14057 | exception = e; | |
14058 | ||
ef23e705 TJB |
14059 | /* For pending breakpoints, it's expected that parsing will |
14060 | fail until the right shared library is loaded. User has | |
14061 | already told to create pending breakpoints and don't need | |
14062 | extra messages. If breakpoint is in bp_shlib_disabled | |
14063 | state, then user already saw the message about that | |
14064 | breakpoint being disabled, and don't want to see more | |
14065 | errors. */ | |
58438ac1 | 14066 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14067 | && (b->condition_not_parsed |
14068 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14069 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14070 | || b->enable_state == bp_disabled)) |
14071 | not_found_and_ok = 1; | |
14072 | ||
14073 | if (!not_found_and_ok) | |
14074 | { | |
14075 | /* We surely don't want to warn about the same breakpoint | |
14076 | 10 times. One solution, implemented here, is disable | |
14077 | the breakpoint on error. Another solution would be to | |
14078 | have separate 'warning emitted' flag. Since this | |
14079 | happens only when a binary has changed, I don't know | |
14080 | which approach is better. */ | |
14081 | b->enable_state = bp_disabled; | |
14082 | throw_exception (e); | |
14083 | } | |
14084 | } | |
492d29ea | 14085 | END_CATCH |
ef23e705 | 14086 | |
492d29ea | 14087 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 14088 | { |
f8eba3c6 | 14089 | int i; |
ef23e705 | 14090 | |
f8eba3c6 TT |
14091 | for (i = 0; i < sals.nelts; ++i) |
14092 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14093 | if (b->condition_not_parsed && s && s[0]) |
14094 | { | |
ed1d1739 KS |
14095 | char *cond_string, *extra_string; |
14096 | int thread, task; | |
ef23e705 TJB |
14097 | |
14098 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14099 | &cond_string, &thread, &task, |
14100 | &extra_string); | |
ef23e705 TJB |
14101 | if (cond_string) |
14102 | b->cond_string = cond_string; | |
14103 | b->thread = thread; | |
14104 | b->task = task; | |
e7e0cddf SS |
14105 | if (extra_string) |
14106 | b->extra_string = extra_string; | |
ef23e705 TJB |
14107 | b->condition_not_parsed = 0; |
14108 | } | |
14109 | ||
983af33b | 14110 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14111 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14112 | |
58438ac1 TT |
14113 | *found = 1; |
14114 | } | |
14115 | else | |
14116 | *found = 0; | |
ef23e705 TJB |
14117 | |
14118 | return sals; | |
14119 | } | |
14120 | ||
348d480f PA |
14121 | /* The default re_set method, for typical hardware or software |
14122 | breakpoints. Reevaluate the breakpoint and recreate its | |
14123 | locations. */ | |
14124 | ||
14125 | static void | |
28010a5d | 14126 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14127 | { |
14128 | int found; | |
f1310107 | 14129 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14130 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14131 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14132 | |
14133 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14134 | if (found) | |
14135 | { | |
14136 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14137 | expanded = sals; |
ef23e705 TJB |
14138 | } |
14139 | ||
f1310107 TJB |
14140 | if (b->addr_string_range_end) |
14141 | { | |
14142 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14143 | if (found) | |
14144 | { | |
14145 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14146 | expanded_end = sals_end; |
f1310107 TJB |
14147 | } |
14148 | } | |
14149 | ||
14150 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14151 | } |
14152 | ||
983af33b SDJ |
14153 | /* Default method for creating SALs from an address string. It basically |
14154 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14155 | ||
14156 | static void | |
14157 | create_sals_from_address_default (char **arg, | |
14158 | struct linespec_result *canonical, | |
14159 | enum bptype type_wanted, | |
14160 | char *addr_start, char **copy_arg) | |
14161 | { | |
14162 | parse_breakpoint_sals (arg, canonical); | |
14163 | } | |
14164 | ||
14165 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14166 | function for the `create_breakpoints_sal' method of | |
14167 | breakpoint_ops. */ | |
14168 | ||
14169 | static void | |
14170 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14171 | struct linespec_result *canonical, | |
983af33b | 14172 | char *cond_string, |
e7e0cddf | 14173 | char *extra_string, |
983af33b SDJ |
14174 | enum bptype type_wanted, |
14175 | enum bpdisp disposition, | |
14176 | int thread, | |
14177 | int task, int ignore_count, | |
14178 | const struct breakpoint_ops *ops, | |
14179 | int from_tty, int enabled, | |
44f238bb | 14180 | int internal, unsigned flags) |
983af33b SDJ |
14181 | { |
14182 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14183 | extra_string, |
983af33b SDJ |
14184 | type_wanted, disposition, |
14185 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14186 | enabled, internal, flags); |
983af33b SDJ |
14187 | } |
14188 | ||
14189 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14190 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14191 | ||
14192 | static void | |
14193 | decode_linespec_default (struct breakpoint *b, char **s, | |
14194 | struct symtabs_and_lines *sals) | |
14195 | { | |
14196 | struct linespec_result canonical; | |
14197 | ||
14198 | init_linespec_result (&canonical); | |
14199 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14200 | (struct symtab *) NULL, 0, | |
14201 | &canonical, multiple_symbols_all, | |
14202 | b->filter); | |
14203 | ||
14204 | /* We should get 0 or 1 resulting SALs. */ | |
14205 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14206 | ||
14207 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14208 | { | |
14209 | struct linespec_sals *lsal; | |
14210 | ||
14211 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14212 | *sals = lsal->sals; | |
14213 | /* Arrange it so the destructor does not free the | |
14214 | contents. */ | |
14215 | lsal->sals.sals = NULL; | |
14216 | } | |
14217 | ||
14218 | destroy_linespec_result (&canonical); | |
14219 | } | |
14220 | ||
28010a5d PA |
14221 | /* Prepare the global context for a re-set of breakpoint B. */ |
14222 | ||
14223 | static struct cleanup * | |
14224 | prepare_re_set_context (struct breakpoint *b) | |
14225 | { | |
14226 | struct cleanup *cleanups; | |
14227 | ||
14228 | input_radix = b->input_radix; | |
14229 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14230 | if (b->pspace != NULL) |
14231 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14232 | set_language (b->language); |
14233 | ||
14234 | return cleanups; | |
ef23e705 TJB |
14235 | } |
14236 | ||
c906108c SS |
14237 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14238 | The value we return ends up being the return value from catch_errors. | |
14239 | Unused in this case. */ | |
14240 | ||
14241 | static int | |
4efb68b1 | 14242 | breakpoint_re_set_one (void *bint) |
c906108c | 14243 | { |
4a64f543 | 14244 | /* Get past catch_errs. */ |
53a5351d | 14245 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14246 | struct cleanup *cleanups; |
c906108c | 14247 | |
348d480f PA |
14248 | cleanups = prepare_re_set_context (b); |
14249 | b->ops->re_set (b); | |
14250 | do_cleanups (cleanups); | |
c906108c SS |
14251 | return 0; |
14252 | } | |
14253 | ||
69de3c6a | 14254 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14255 | void |
69de3c6a | 14256 | breakpoint_re_set (void) |
c906108c | 14257 | { |
35df4500 | 14258 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14259 | enum language save_language; |
14260 | int save_input_radix; | |
6c95b8df | 14261 | struct cleanup *old_chain; |
c5aa993b | 14262 | |
c906108c SS |
14263 | save_language = current_language->la_language; |
14264 | save_input_radix = input_radix; | |
6c95b8df PA |
14265 | old_chain = save_current_program_space (); |
14266 | ||
35df4500 | 14267 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14268 | { |
4a64f543 | 14269 | /* Format possible error msg. */ |
fe3f5fa8 | 14270 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14271 | b->number); |
14272 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14273 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14274 | do_cleanups (cleanups); |
c5aa993b | 14275 | } |
c906108c SS |
14276 | set_language (save_language); |
14277 | input_radix = save_input_radix; | |
e62c965a | 14278 | |
0756c555 | 14279 | jit_breakpoint_re_set (); |
4efc6507 | 14280 | |
6c95b8df PA |
14281 | do_cleanups (old_chain); |
14282 | ||
af02033e PP |
14283 | create_overlay_event_breakpoint (); |
14284 | create_longjmp_master_breakpoint (); | |
14285 | create_std_terminate_master_breakpoint (); | |
186c406b | 14286 | create_exception_master_breakpoint (); |
c906108c SS |
14287 | } |
14288 | \f | |
c906108c SS |
14289 | /* Reset the thread number of this breakpoint: |
14290 | ||
14291 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14292 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14293 | void |
fba45db2 | 14294 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14295 | { |
14296 | if (b->thread != -1) | |
14297 | { | |
39f77062 KB |
14298 | if (in_thread_list (inferior_ptid)) |
14299 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14300 | |
14301 | /* We're being called after following a fork. The new fork is | |
14302 | selected as current, and unless this was a vfork will have a | |
14303 | different program space from the original thread. Reset that | |
14304 | as well. */ | |
14305 | b->loc->pspace = current_program_space; | |
c906108c SS |
14306 | } |
14307 | } | |
14308 | ||
03ac34d5 MS |
14309 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14310 | If from_tty is nonzero, it prints a message to that effect, | |
14311 | which ends with a period (no newline). */ | |
14312 | ||
c906108c | 14313 | void |
fba45db2 | 14314 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14315 | { |
52f0bd74 | 14316 | struct breakpoint *b; |
c906108c SS |
14317 | |
14318 | if (count < 0) | |
14319 | count = 0; | |
14320 | ||
14321 | ALL_BREAKPOINTS (b) | |
14322 | if (b->number == bptnum) | |
c5aa993b | 14323 | { |
d77f58be SS |
14324 | if (is_tracepoint (b)) |
14325 | { | |
14326 | if (from_tty && count != 0) | |
14327 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14328 | bptnum); | |
14329 | return; | |
14330 | } | |
14331 | ||
c5aa993b | 14332 | b->ignore_count = count; |
221ea385 KS |
14333 | if (from_tty) |
14334 | { | |
14335 | if (count == 0) | |
3e43a32a MS |
14336 | printf_filtered (_("Will stop next time " |
14337 | "breakpoint %d is reached."), | |
221ea385 KS |
14338 | bptnum); |
14339 | else if (count == 1) | |
a3f17187 | 14340 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14341 | bptnum); |
14342 | else | |
3e43a32a MS |
14343 | printf_filtered (_("Will ignore next %d " |
14344 | "crossings of breakpoint %d."), | |
221ea385 KS |
14345 | count, bptnum); |
14346 | } | |
8d3788bd | 14347 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14348 | return; |
14349 | } | |
c906108c | 14350 | |
8a3fe4f8 | 14351 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14352 | } |
14353 | ||
c906108c SS |
14354 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14355 | ||
14356 | static void | |
fba45db2 | 14357 | ignore_command (char *args, int from_tty) |
c906108c SS |
14358 | { |
14359 | char *p = args; | |
52f0bd74 | 14360 | int num; |
c906108c SS |
14361 | |
14362 | if (p == 0) | |
e2e0b3e5 | 14363 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14364 | |
c906108c | 14365 | num = get_number (&p); |
5c44784c | 14366 | if (num == 0) |
8a3fe4f8 | 14367 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14368 | if (*p == 0) |
8a3fe4f8 | 14369 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14370 | |
14371 | set_ignore_count (num, | |
14372 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14373 | from_tty); | |
221ea385 KS |
14374 | if (from_tty) |
14375 | printf_filtered ("\n"); | |
c906108c SS |
14376 | } |
14377 | \f | |
14378 | /* Call FUNCTION on each of the breakpoints | |
14379 | whose numbers are given in ARGS. */ | |
14380 | ||
14381 | static void | |
95a42b64 TT |
14382 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14383 | void *), | |
14384 | void *data) | |
c906108c | 14385 | { |
52f0bd74 AC |
14386 | int num; |
14387 | struct breakpoint *b, *tmp; | |
11cf8741 | 14388 | int match; |
197f0a60 | 14389 | struct get_number_or_range_state state; |
c906108c | 14390 | |
b9d61307 | 14391 | if (args == 0 || *args == '\0') |
e2e0b3e5 | 14392 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14393 | |
197f0a60 TT |
14394 | init_number_or_range (&state, args); |
14395 | ||
14396 | while (!state.finished) | |
c906108c | 14397 | { |
e799154c | 14398 | const char *p = state.string; |
197f0a60 | 14399 | |
11cf8741 | 14400 | match = 0; |
c5aa993b | 14401 | |
197f0a60 | 14402 | num = get_number_or_range (&state); |
5c44784c | 14403 | if (num == 0) |
c5aa993b | 14404 | { |
8a3fe4f8 | 14405 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14406 | } |
14407 | else | |
14408 | { | |
14409 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14410 | if (b->number == num) | |
14411 | { | |
11cf8741 | 14412 | match = 1; |
cdac0397 | 14413 | function (b, data); |
11cf8741 | 14414 | break; |
5c44784c | 14415 | } |
11cf8741 | 14416 | if (match == 0) |
a3f17187 | 14417 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14418 | } |
c906108c SS |
14419 | } |
14420 | } | |
14421 | ||
0d381245 VP |
14422 | static struct bp_location * |
14423 | find_location_by_number (char *number) | |
14424 | { | |
14425 | char *dot = strchr (number, '.'); | |
14426 | char *p1; | |
14427 | int bp_num; | |
14428 | int loc_num; | |
14429 | struct breakpoint *b; | |
14430 | struct bp_location *loc; | |
14431 | ||
14432 | *dot = '\0'; | |
14433 | ||
14434 | p1 = number; | |
197f0a60 | 14435 | bp_num = get_number (&p1); |
0d381245 VP |
14436 | if (bp_num == 0) |
14437 | error (_("Bad breakpoint number '%s'"), number); | |
14438 | ||
14439 | ALL_BREAKPOINTS (b) | |
14440 | if (b->number == bp_num) | |
14441 | { | |
14442 | break; | |
14443 | } | |
14444 | ||
14445 | if (!b || b->number != bp_num) | |
14446 | error (_("Bad breakpoint number '%s'"), number); | |
14447 | ||
14448 | p1 = dot+1; | |
197f0a60 | 14449 | loc_num = get_number (&p1); |
0d381245 VP |
14450 | if (loc_num == 0) |
14451 | error (_("Bad breakpoint location number '%s'"), number); | |
14452 | ||
14453 | --loc_num; | |
14454 | loc = b->loc; | |
14455 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14456 | ; | |
14457 | if (!loc) | |
14458 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14459 | ||
14460 | return loc; | |
14461 | } | |
14462 | ||
14463 | ||
1900040c MS |
14464 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14465 | If from_tty is nonzero, it prints a message to that effect, | |
14466 | which ends with a period (no newline). */ | |
14467 | ||
c906108c | 14468 | void |
fba45db2 | 14469 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14470 | { |
14471 | /* Never disable a watchpoint scope breakpoint; we want to | |
14472 | hit them when we leave scope so we can delete both the | |
14473 | watchpoint and its scope breakpoint at that time. */ | |
14474 | if (bpt->type == bp_watchpoint_scope) | |
14475 | return; | |
14476 | ||
b5de0fa7 | 14477 | bpt->enable_state = bp_disabled; |
c906108c | 14478 | |
b775012e LM |
14479 | /* Mark breakpoint locations modified. */ |
14480 | mark_breakpoint_modified (bpt); | |
14481 | ||
d248b706 KY |
14482 | if (target_supports_enable_disable_tracepoint () |
14483 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14484 | { | |
14485 | struct bp_location *location; | |
14486 | ||
14487 | for (location = bpt->loc; location; location = location->next) | |
14488 | target_disable_tracepoint (location); | |
14489 | } | |
14490 | ||
44702360 | 14491 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14492 | |
8d3788bd | 14493 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14494 | } |
14495 | ||
51be5b68 PA |
14496 | /* A callback for iterate_over_related_breakpoints. */ |
14497 | ||
14498 | static void | |
14499 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14500 | { | |
14501 | disable_breakpoint (b); | |
14502 | } | |
14503 | ||
95a42b64 TT |
14504 | /* A callback for map_breakpoint_numbers that calls |
14505 | disable_breakpoint. */ | |
14506 | ||
14507 | static void | |
14508 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14509 | { | |
51be5b68 | 14510 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14511 | } |
14512 | ||
c906108c | 14513 | static void |
fba45db2 | 14514 | disable_command (char *args, int from_tty) |
c906108c | 14515 | { |
c906108c | 14516 | if (args == 0) |
46c6471b PA |
14517 | { |
14518 | struct breakpoint *bpt; | |
14519 | ||
14520 | ALL_BREAKPOINTS (bpt) | |
14521 | if (user_breakpoint_p (bpt)) | |
14522 | disable_breakpoint (bpt); | |
14523 | } | |
9eaabc75 | 14524 | else |
0d381245 | 14525 | { |
9eaabc75 MW |
14526 | char *num = extract_arg (&args); |
14527 | ||
14528 | while (num) | |
d248b706 | 14529 | { |
9eaabc75 | 14530 | if (strchr (num, '.')) |
b775012e | 14531 | { |
9eaabc75 MW |
14532 | struct bp_location *loc = find_location_by_number (num); |
14533 | ||
14534 | if (loc) | |
14535 | { | |
14536 | if (loc->enabled) | |
14537 | { | |
14538 | loc->enabled = 0; | |
14539 | mark_breakpoint_location_modified (loc); | |
14540 | } | |
14541 | if (target_supports_enable_disable_tracepoint () | |
14542 | && current_trace_status ()->running && loc->owner | |
14543 | && is_tracepoint (loc->owner)) | |
14544 | target_disable_tracepoint (loc); | |
14545 | } | |
44702360 | 14546 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 14547 | } |
9eaabc75 MW |
14548 | else |
14549 | map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL); | |
14550 | num = extract_arg (&args); | |
d248b706 | 14551 | } |
0d381245 | 14552 | } |
c906108c SS |
14553 | } |
14554 | ||
14555 | static void | |
816338b5 SS |
14556 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14557 | int count) | |
c906108c | 14558 | { |
afe38095 | 14559 | int target_resources_ok; |
c906108c SS |
14560 | |
14561 | if (bpt->type == bp_hardware_breakpoint) | |
14562 | { | |
14563 | int i; | |
c5aa993b | 14564 | i = hw_breakpoint_used_count (); |
53a5351d | 14565 | target_resources_ok = |
d92524f1 | 14566 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14567 | i + 1, 0); |
c906108c | 14568 | if (target_resources_ok == 0) |
8a3fe4f8 | 14569 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14570 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14571 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14572 | } |
14573 | ||
cc60f2e3 | 14574 | if (is_watchpoint (bpt)) |
c906108c | 14575 | { |
d07205c2 JK |
14576 | /* Initialize it just to avoid a GCC false warning. */ |
14577 | enum enable_state orig_enable_state = 0; | |
dde02812 | 14578 | |
492d29ea | 14579 | TRY |
c906108c | 14580 | { |
3a5c3e22 PA |
14581 | struct watchpoint *w = (struct watchpoint *) bpt; |
14582 | ||
1e718ff1 TJB |
14583 | orig_enable_state = bpt->enable_state; |
14584 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14585 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14586 | } |
492d29ea | 14587 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14588 | { |
1e718ff1 | 14589 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14590 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14591 | bpt->number); | |
14592 | return; | |
c5aa993b | 14593 | } |
492d29ea | 14594 | END_CATCH |
c906108c | 14595 | } |
0101ce28 | 14596 | |
b775012e LM |
14597 | bpt->enable_state = bp_enabled; |
14598 | ||
14599 | /* Mark breakpoint locations modified. */ | |
14600 | mark_breakpoint_modified (bpt); | |
14601 | ||
d248b706 KY |
14602 | if (target_supports_enable_disable_tracepoint () |
14603 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14604 | { | |
14605 | struct bp_location *location; | |
14606 | ||
14607 | for (location = bpt->loc; location; location = location->next) | |
14608 | target_enable_tracepoint (location); | |
14609 | } | |
14610 | ||
b4c291bb | 14611 | bpt->disposition = disposition; |
816338b5 | 14612 | bpt->enable_count = count; |
44702360 | 14613 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14614 | |
8d3788bd | 14615 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14616 | } |
14617 | ||
fe3f5fa8 | 14618 | |
c906108c | 14619 | void |
fba45db2 | 14620 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14621 | { |
816338b5 | 14622 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14623 | } |
14624 | ||
14625 | static void | |
14626 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14627 | { | |
14628 | enable_breakpoint (bpt); | |
c906108c SS |
14629 | } |
14630 | ||
95a42b64 TT |
14631 | /* A callback for map_breakpoint_numbers that calls |
14632 | enable_breakpoint. */ | |
14633 | ||
14634 | static void | |
14635 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14636 | { | |
51be5b68 | 14637 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14638 | } |
14639 | ||
c906108c SS |
14640 | /* The enable command enables the specified breakpoints (or all defined |
14641 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14642 | in stopping the inferior. */ |
c906108c | 14643 | |
c906108c | 14644 | static void |
fba45db2 | 14645 | enable_command (char *args, int from_tty) |
c906108c | 14646 | { |
c906108c | 14647 | if (args == 0) |
46c6471b PA |
14648 | { |
14649 | struct breakpoint *bpt; | |
14650 | ||
14651 | ALL_BREAKPOINTS (bpt) | |
14652 | if (user_breakpoint_p (bpt)) | |
14653 | enable_breakpoint (bpt); | |
14654 | } | |
9eaabc75 | 14655 | else |
0d381245 | 14656 | { |
9eaabc75 MW |
14657 | char *num = extract_arg (&args); |
14658 | ||
14659 | while (num) | |
d248b706 | 14660 | { |
9eaabc75 | 14661 | if (strchr (num, '.')) |
b775012e | 14662 | { |
9eaabc75 MW |
14663 | struct bp_location *loc = find_location_by_number (num); |
14664 | ||
14665 | if (loc) | |
14666 | { | |
14667 | if (!loc->enabled) | |
14668 | { | |
14669 | loc->enabled = 1; | |
14670 | mark_breakpoint_location_modified (loc); | |
14671 | } | |
14672 | if (target_supports_enable_disable_tracepoint () | |
14673 | && current_trace_status ()->running && loc->owner | |
14674 | && is_tracepoint (loc->owner)) | |
14675 | target_enable_tracepoint (loc); | |
14676 | } | |
44702360 | 14677 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 14678 | } |
9eaabc75 MW |
14679 | else |
14680 | map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL); | |
14681 | num = extract_arg (&args); | |
d248b706 | 14682 | } |
0d381245 | 14683 | } |
c906108c SS |
14684 | } |
14685 | ||
816338b5 SS |
14686 | /* This struct packages up disposition data for application to multiple |
14687 | breakpoints. */ | |
14688 | ||
14689 | struct disp_data | |
14690 | { | |
14691 | enum bpdisp disp; | |
14692 | int count; | |
14693 | }; | |
14694 | ||
c906108c | 14695 | static void |
51be5b68 PA |
14696 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14697 | { | |
816338b5 | 14698 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14699 | |
816338b5 | 14700 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14701 | } |
14702 | ||
14703 | static void | |
14704 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14705 | { |
816338b5 | 14706 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14707 | |
14708 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14709 | } |
14710 | ||
c906108c | 14711 | static void |
fba45db2 | 14712 | enable_once_command (char *args, int from_tty) |
c906108c | 14713 | { |
51be5b68 | 14714 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14715 | } |
14716 | ||
816338b5 SS |
14717 | static void |
14718 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14719 | { | |
14720 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14721 | ||
14722 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14723 | } | |
14724 | ||
14725 | static void | |
14726 | enable_count_command (char *args, int from_tty) | |
14727 | { | |
b9d61307 SM |
14728 | int count; |
14729 | ||
14730 | if (args == NULL) | |
14731 | error_no_arg (_("hit count")); | |
14732 | ||
14733 | count = get_number (&args); | |
816338b5 SS |
14734 | |
14735 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14736 | } | |
14737 | ||
c906108c | 14738 | static void |
51be5b68 | 14739 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14740 | { |
816338b5 | 14741 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14742 | |
14743 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14744 | } |
14745 | ||
c906108c | 14746 | static void |
fba45db2 | 14747 | enable_delete_command (char *args, int from_tty) |
c906108c | 14748 | { |
51be5b68 | 14749 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14750 | } |
14751 | \f | |
fa8d40ab JJ |
14752 | static void |
14753 | set_breakpoint_cmd (char *args, int from_tty) | |
14754 | { | |
14755 | } | |
14756 | ||
14757 | static void | |
14758 | show_breakpoint_cmd (char *args, int from_tty) | |
14759 | { | |
14760 | } | |
14761 | ||
1f3b5d1b PP |
14762 | /* Invalidate last known value of any hardware watchpoint if |
14763 | the memory which that value represents has been written to by | |
14764 | GDB itself. */ | |
14765 | ||
14766 | static void | |
8de0566d YQ |
14767 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14768 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14769 | const bfd_byte *data) |
14770 | { | |
14771 | struct breakpoint *bp; | |
14772 | ||
14773 | ALL_BREAKPOINTS (bp) | |
14774 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14775 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14776 | { |
3a5c3e22 | 14777 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14778 | |
3a5c3e22 PA |
14779 | if (wp->val_valid && wp->val) |
14780 | { | |
14781 | struct bp_location *loc; | |
14782 | ||
14783 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14784 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14785 | && loc->address + loc->length > addr | |
14786 | && addr + len > loc->address) | |
14787 | { | |
14788 | value_free (wp->val); | |
14789 | wp->val = NULL; | |
14790 | wp->val_valid = 0; | |
14791 | } | |
14792 | } | |
1f3b5d1b PP |
14793 | } |
14794 | } | |
14795 | ||
8181d85f DJ |
14796 | /* Create and insert a breakpoint for software single step. */ |
14797 | ||
14798 | void | |
6c95b8df | 14799 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14800 | struct address_space *aspace, |
14801 | CORE_ADDR next_pc) | |
8181d85f | 14802 | { |
7c16b83e PA |
14803 | struct thread_info *tp = inferior_thread (); |
14804 | struct symtab_and_line sal; | |
14805 | CORE_ADDR pc = next_pc; | |
8181d85f | 14806 | |
34b7e8a6 PA |
14807 | if (tp->control.single_step_breakpoints == NULL) |
14808 | { | |
14809 | tp->control.single_step_breakpoints | |
14810 | = new_single_step_breakpoint (tp->num, gdbarch); | |
14811 | } | |
8181d85f | 14812 | |
7c16b83e PA |
14813 | sal = find_pc_line (pc, 0); |
14814 | sal.pc = pc; | |
14815 | sal.section = find_pc_overlay (pc); | |
14816 | sal.explicit_pc = 1; | |
34b7e8a6 | 14817 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14818 | |
7c16b83e | 14819 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14820 | } |
14821 | ||
34b7e8a6 | 14822 | /* See breakpoint.h. */ |
f02253f1 HZ |
14823 | |
14824 | int | |
7c16b83e PA |
14825 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
14826 | struct address_space *aspace, | |
14827 | CORE_ADDR pc) | |
1aafd4da | 14828 | { |
7c16b83e | 14829 | struct bp_location *loc; |
1aafd4da | 14830 | |
7c16b83e PA |
14831 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14832 | if (loc->inserted | |
14833 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14834 | return 1; | |
1aafd4da | 14835 | |
7c16b83e | 14836 | return 0; |
ef370185 JB |
14837 | } |
14838 | ||
14839 | /* Check whether a software single-step breakpoint is inserted at | |
14840 | PC. */ | |
14841 | ||
14842 | int | |
14843 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, | |
14844 | CORE_ADDR pc) | |
14845 | { | |
34b7e8a6 PA |
14846 | struct breakpoint *bpt; |
14847 | ||
14848 | ALL_BREAKPOINTS (bpt) | |
14849 | { | |
14850 | if (bpt->type == bp_single_step | |
14851 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14852 | return 1; | |
14853 | } | |
14854 | return 0; | |
1aafd4da UW |
14855 | } |
14856 | ||
1042e4c0 SS |
14857 | /* Tracepoint-specific operations. */ |
14858 | ||
14859 | /* Set tracepoint count to NUM. */ | |
14860 | static void | |
14861 | set_tracepoint_count (int num) | |
14862 | { | |
14863 | tracepoint_count = num; | |
4fa62494 | 14864 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14865 | } |
14866 | ||
70221824 | 14867 | static void |
1042e4c0 SS |
14868 | trace_command (char *arg, int from_tty) |
14869 | { | |
55aa24fb SDJ |
14870 | struct breakpoint_ops *ops; |
14871 | const char *arg_cp = arg; | |
14872 | ||
14873 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
14874 | ops = &tracepoint_probe_breakpoint_ops; | |
14875 | else | |
14876 | ops = &tracepoint_breakpoint_ops; | |
14877 | ||
558a9d82 YQ |
14878 | create_breakpoint (get_current_arch (), |
14879 | arg, | |
14880 | NULL, 0, NULL, 1 /* parse arg */, | |
14881 | 0 /* tempflag */, | |
14882 | bp_tracepoint /* type_wanted */, | |
14883 | 0 /* Ignore count */, | |
14884 | pending_break_support, | |
14885 | ops, | |
14886 | from_tty, | |
14887 | 1 /* enabled */, | |
14888 | 0 /* internal */, 0); | |
1042e4c0 SS |
14889 | } |
14890 | ||
70221824 | 14891 | static void |
7a697b8d SS |
14892 | ftrace_command (char *arg, int from_tty) |
14893 | { | |
558a9d82 YQ |
14894 | create_breakpoint (get_current_arch (), |
14895 | arg, | |
14896 | NULL, 0, NULL, 1 /* parse arg */, | |
14897 | 0 /* tempflag */, | |
14898 | bp_fast_tracepoint /* type_wanted */, | |
14899 | 0 /* Ignore count */, | |
14900 | pending_break_support, | |
14901 | &tracepoint_breakpoint_ops, | |
14902 | from_tty, | |
14903 | 1 /* enabled */, | |
14904 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14905 | } |
14906 | ||
14907 | /* strace command implementation. Creates a static tracepoint. */ | |
14908 | ||
70221824 | 14909 | static void |
0fb4aa4b PA |
14910 | strace_command (char *arg, int from_tty) |
14911 | { | |
983af33b SDJ |
14912 | struct breakpoint_ops *ops; |
14913 | ||
14914 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14915 | or with a normal static tracepoint. */ | |
61012eef | 14916 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
983af33b SDJ |
14917 | ops = &strace_marker_breakpoint_ops; |
14918 | else | |
14919 | ops = &tracepoint_breakpoint_ops; | |
14920 | ||
558a9d82 YQ |
14921 | create_breakpoint (get_current_arch (), |
14922 | arg, | |
14923 | NULL, 0, NULL, 1 /* parse arg */, | |
14924 | 0 /* tempflag */, | |
14925 | bp_static_tracepoint /* type_wanted */, | |
14926 | 0 /* Ignore count */, | |
14927 | pending_break_support, | |
14928 | ops, | |
14929 | from_tty, | |
14930 | 1 /* enabled */, | |
14931 | 0 /* internal */, 0); | |
7a697b8d SS |
14932 | } |
14933 | ||
409873ef SS |
14934 | /* Set up a fake reader function that gets command lines from a linked |
14935 | list that was acquired during tracepoint uploading. */ | |
14936 | ||
14937 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14938 | static int next_cmd; |
409873ef SS |
14939 | |
14940 | static char * | |
14941 | read_uploaded_action (void) | |
14942 | { | |
14943 | char *rslt; | |
14944 | ||
3149d8c1 | 14945 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14946 | |
3149d8c1 | 14947 | next_cmd++; |
409873ef SS |
14948 | |
14949 | return rslt; | |
14950 | } | |
14951 | ||
00bf0b85 SS |
14952 | /* Given information about a tracepoint as recorded on a target (which |
14953 | can be either a live system or a trace file), attempt to create an | |
14954 | equivalent GDB tracepoint. This is not a reliable process, since | |
14955 | the target does not necessarily have all the information used when | |
14956 | the tracepoint was originally defined. */ | |
14957 | ||
d9b3f62e | 14958 | struct tracepoint * |
00bf0b85 | 14959 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14960 | { |
409873ef | 14961 | char *addr_str, small_buf[100]; |
d9b3f62e | 14962 | struct tracepoint *tp; |
fd9b8c24 | 14963 | |
409873ef SS |
14964 | if (utp->at_string) |
14965 | addr_str = utp->at_string; | |
14966 | else | |
14967 | { | |
14968 | /* In the absence of a source location, fall back to raw | |
14969 | address. Since there is no way to confirm that the address | |
14970 | means the same thing as when the trace was started, warn the | |
14971 | user. */ | |
3e43a32a MS |
14972 | warning (_("Uploaded tracepoint %d has no " |
14973 | "source location, using raw address"), | |
409873ef | 14974 | utp->number); |
8c042590 | 14975 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14976 | addr_str = small_buf; |
14977 | } | |
14978 | ||
14979 | /* There's not much we can do with a sequence of bytecodes. */ | |
14980 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14981 | warning (_("Uploaded tracepoint %d condition " |
14982 | "has no source form, ignoring it"), | |
409873ef | 14983 | utp->number); |
d5551862 | 14984 | |
8cdf0e15 | 14985 | if (!create_breakpoint (get_current_arch (), |
409873ef | 14986 | addr_str, |
e7e0cddf SS |
14987 | utp->cond_string, -1, NULL, |
14988 | 0 /* parse cond/thread */, | |
8cdf0e15 | 14989 | 0 /* tempflag */, |
0fb4aa4b | 14990 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14991 | 0 /* Ignore count */, |
14992 | pending_break_support, | |
348d480f | 14993 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14994 | 0 /* from_tty */, |
84f4c1fe | 14995 | utp->enabled /* enabled */, |
44f238bb PA |
14996 | 0 /* internal */, |
14997 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
14998 | return NULL; |
14999 | ||
409873ef | 15000 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15001 | tp = get_tracepoint (tracepoint_count); |
15002 | gdb_assert (tp != NULL); | |
d5551862 | 15003 | |
00bf0b85 SS |
15004 | if (utp->pass > 0) |
15005 | { | |
8c042590 PM |
15006 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15007 | tp->base.number); | |
00bf0b85 | 15008 | |
409873ef | 15009 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15010 | } |
15011 | ||
409873ef SS |
15012 | /* If we have uploaded versions of the original commands, set up a |
15013 | special-purpose "reader" function and call the usual command line | |
15014 | reader, then pass the result to the breakpoint command-setting | |
15015 | function. */ | |
3149d8c1 | 15016 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15017 | { |
409873ef | 15018 | struct command_line *cmd_list; |
00bf0b85 | 15019 | |
409873ef | 15020 | this_utp = utp; |
3149d8c1 | 15021 | next_cmd = 0; |
d5551862 | 15022 | |
409873ef SS |
15023 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15024 | ||
d9b3f62e | 15025 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15026 | } |
3149d8c1 SS |
15027 | else if (!VEC_empty (char_ptr, utp->actions) |
15028 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15029 | warning (_("Uploaded tracepoint %d actions " |
15030 | "have no source form, ignoring them"), | |
409873ef | 15031 | utp->number); |
00bf0b85 | 15032 | |
f196051f SS |
15033 | /* Copy any status information that might be available. */ |
15034 | tp->base.hit_count = utp->hit_count; | |
15035 | tp->traceframe_usage = utp->traceframe_usage; | |
15036 | ||
00bf0b85 | 15037 | return tp; |
d9b3f62e | 15038 | } |
00bf0b85 | 15039 | |
1042e4c0 SS |
15040 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15041 | omitted. */ | |
15042 | ||
15043 | static void | |
e5a67952 | 15044 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15045 | { |
79a45e25 | 15046 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15047 | int num_printed; |
1042e4c0 | 15048 | |
e5a67952 | 15049 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15050 | |
15051 | if (num_printed == 0) | |
1042e4c0 | 15052 | { |
e5a67952 | 15053 | if (args == NULL || *args == '\0') |
d77f58be SS |
15054 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15055 | else | |
e5a67952 | 15056 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15057 | } |
ad443146 SS |
15058 | |
15059 | default_collect_info (); | |
1042e4c0 SS |
15060 | } |
15061 | ||
4a64f543 | 15062 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15063 | Not supported by all targets. */ |
15064 | static void | |
15065 | enable_trace_command (char *args, int from_tty) | |
15066 | { | |
15067 | enable_command (args, from_tty); | |
15068 | } | |
15069 | ||
4a64f543 | 15070 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15071 | Not supported by all targets. */ |
15072 | static void | |
15073 | disable_trace_command (char *args, int from_tty) | |
15074 | { | |
15075 | disable_command (args, from_tty); | |
15076 | } | |
15077 | ||
4a64f543 | 15078 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15079 | static void |
15080 | delete_trace_command (char *arg, int from_tty) | |
15081 | { | |
35df4500 | 15082 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15083 | |
15084 | dont_repeat (); | |
15085 | ||
15086 | if (arg == 0) | |
15087 | { | |
15088 | int breaks_to_delete = 0; | |
15089 | ||
15090 | /* Delete all breakpoints if no argument. | |
15091 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15092 | have to be deleted with an explicit breakpoint number |
15093 | argument. */ | |
1042e4c0 | 15094 | ALL_TRACEPOINTS (b) |
46c6471b | 15095 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15096 | { |
15097 | breaks_to_delete = 1; | |
15098 | break; | |
15099 | } | |
1042e4c0 SS |
15100 | |
15101 | /* Ask user only if there are some breakpoints to delete. */ | |
15102 | if (!from_tty | |
15103 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15104 | { | |
35df4500 | 15105 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15106 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15107 | delete_breakpoint (b); |
1042e4c0 SS |
15108 | } |
15109 | } | |
15110 | else | |
51be5b68 | 15111 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15112 | } |
15113 | ||
197f0a60 TT |
15114 | /* Helper function for trace_pass_command. */ |
15115 | ||
15116 | static void | |
d9b3f62e | 15117 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15118 | { |
d9b3f62e | 15119 | tp->pass_count = count; |
6f6484cd | 15120 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15121 | if (from_tty) |
15122 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15123 | tp->base.number, count); |
197f0a60 TT |
15124 | } |
15125 | ||
1042e4c0 SS |
15126 | /* Set passcount for tracepoint. |
15127 | ||
15128 | First command argument is passcount, second is tracepoint number. | |
15129 | If tracepoint number omitted, apply to most recently defined. | |
15130 | Also accepts special argument "all". */ | |
15131 | ||
15132 | static void | |
15133 | trace_pass_command (char *args, int from_tty) | |
15134 | { | |
d9b3f62e | 15135 | struct tracepoint *t1; |
1042e4c0 | 15136 | unsigned int count; |
1042e4c0 SS |
15137 | |
15138 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15139 | error (_("passcount command requires an " |
15140 | "argument (count + optional TP num)")); | |
1042e4c0 | 15141 | |
4a64f543 | 15142 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15143 | |
529480d0 | 15144 | args = skip_spaces (args); |
1042e4c0 SS |
15145 | if (*args && strncasecmp (args, "all", 3) == 0) |
15146 | { | |
d9b3f62e PA |
15147 | struct breakpoint *b; |
15148 | ||
1042e4c0 | 15149 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15150 | if (*args) |
15151 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15152 | |
d9b3f62e | 15153 | ALL_TRACEPOINTS (b) |
197f0a60 | 15154 | { |
d9b3f62e | 15155 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15156 | trace_pass_set_count (t1, count, from_tty); |
15157 | } | |
15158 | } | |
15159 | else if (*args == '\0') | |
1042e4c0 | 15160 | { |
5fa1d40e | 15161 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15162 | if (t1) |
197f0a60 TT |
15163 | trace_pass_set_count (t1, count, from_tty); |
15164 | } | |
15165 | else | |
15166 | { | |
15167 | struct get_number_or_range_state state; | |
15168 | ||
15169 | init_number_or_range (&state, args); | |
15170 | while (!state.finished) | |
1042e4c0 | 15171 | { |
5fa1d40e | 15172 | t1 = get_tracepoint_by_number (&args, &state); |
197f0a60 TT |
15173 | if (t1) |
15174 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15175 | } |
15176 | } | |
1042e4c0 SS |
15177 | } |
15178 | ||
d9b3f62e | 15179 | struct tracepoint * |
1042e4c0 SS |
15180 | get_tracepoint (int num) |
15181 | { | |
15182 | struct breakpoint *t; | |
15183 | ||
15184 | ALL_TRACEPOINTS (t) | |
15185 | if (t->number == num) | |
d9b3f62e | 15186 | return (struct tracepoint *) t; |
1042e4c0 SS |
15187 | |
15188 | return NULL; | |
15189 | } | |
15190 | ||
d5551862 SS |
15191 | /* Find the tracepoint with the given target-side number (which may be |
15192 | different from the tracepoint number after disconnecting and | |
15193 | reconnecting). */ | |
15194 | ||
d9b3f62e | 15195 | struct tracepoint * |
d5551862 SS |
15196 | get_tracepoint_by_number_on_target (int num) |
15197 | { | |
d9b3f62e | 15198 | struct breakpoint *b; |
d5551862 | 15199 | |
d9b3f62e PA |
15200 | ALL_TRACEPOINTS (b) |
15201 | { | |
15202 | struct tracepoint *t = (struct tracepoint *) b; | |
15203 | ||
15204 | if (t->number_on_target == num) | |
15205 | return t; | |
15206 | } | |
d5551862 SS |
15207 | |
15208 | return NULL; | |
15209 | } | |
15210 | ||
1042e4c0 | 15211 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15212 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15213 | If the argument is missing, the most recent tracepoint |
15214 | (tracepoint_count) is returned. */ | |
15215 | ||
d9b3f62e | 15216 | struct tracepoint * |
197f0a60 | 15217 | get_tracepoint_by_number (char **arg, |
5fa1d40e | 15218 | struct get_number_or_range_state *state) |
1042e4c0 | 15219 | { |
1042e4c0 SS |
15220 | struct breakpoint *t; |
15221 | int tpnum; | |
15222 | char *instring = arg == NULL ? NULL : *arg; | |
15223 | ||
197f0a60 TT |
15224 | if (state) |
15225 | { | |
15226 | gdb_assert (!state->finished); | |
15227 | tpnum = get_number_or_range (state); | |
15228 | } | |
15229 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15230 | tpnum = tracepoint_count; |
1042e4c0 | 15231 | else |
197f0a60 | 15232 | tpnum = get_number (arg); |
1042e4c0 SS |
15233 | |
15234 | if (tpnum <= 0) | |
15235 | { | |
15236 | if (instring && *instring) | |
15237 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15238 | instring); | |
15239 | else | |
5fa1d40e | 15240 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15241 | return NULL; |
15242 | } | |
15243 | ||
15244 | ALL_TRACEPOINTS (t) | |
15245 | if (t->number == tpnum) | |
15246 | { | |
d9b3f62e | 15247 | return (struct tracepoint *) t; |
1042e4c0 SS |
15248 | } |
15249 | ||
1042e4c0 SS |
15250 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15251 | return NULL; | |
15252 | } | |
15253 | ||
d9b3f62e PA |
15254 | void |
15255 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15256 | { | |
15257 | if (b->thread != -1) | |
15258 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15259 | ||
15260 | if (b->task != 0) | |
15261 | fprintf_unfiltered (fp, " task %d", b->task); | |
15262 | ||
15263 | fprintf_unfiltered (fp, "\n"); | |
15264 | } | |
15265 | ||
6149aea9 PA |
15266 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15267 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15268 | on each breakpoint and only include the ones for which it returns | |
15269 | non-zero. */ | |
15270 | ||
1042e4c0 | 15271 | static void |
6149aea9 PA |
15272 | save_breakpoints (char *filename, int from_tty, |
15273 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15274 | { |
15275 | struct breakpoint *tp; | |
6149aea9 | 15276 | int any = 0; |
1042e4c0 | 15277 | struct cleanup *cleanup; |
a7bdde9e | 15278 | struct ui_file *fp; |
6149aea9 | 15279 | int extra_trace_bits = 0; |
1042e4c0 | 15280 | |
6149aea9 PA |
15281 | if (filename == 0 || *filename == 0) |
15282 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15283 | |
15284 | /* See if we have anything to save. */ | |
6149aea9 | 15285 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15286 | { |
6149aea9 | 15287 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15288 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15289 | continue; |
15290 | ||
15291 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15292 | if (filter && !filter (tp)) | |
15293 | continue; | |
15294 | ||
15295 | any = 1; | |
15296 | ||
15297 | if (is_tracepoint (tp)) | |
15298 | { | |
15299 | extra_trace_bits = 1; | |
15300 | ||
15301 | /* We can stop searching. */ | |
15302 | break; | |
15303 | } | |
1042e4c0 | 15304 | } |
6149aea9 PA |
15305 | |
15306 | if (!any) | |
1042e4c0 | 15307 | { |
6149aea9 | 15308 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15309 | return; |
15310 | } | |
15311 | ||
c718be47 PA |
15312 | filename = tilde_expand (filename); |
15313 | cleanup = make_cleanup (xfree, filename); | |
15314 | fp = gdb_fopen (filename, "w"); | |
059fb39f | 15315 | if (!fp) |
6149aea9 PA |
15316 | error (_("Unable to open file '%s' for saving (%s)"), |
15317 | filename, safe_strerror (errno)); | |
a7bdde9e | 15318 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15319 | |
6149aea9 PA |
15320 | if (extra_trace_bits) |
15321 | save_trace_state_variables (fp); | |
8bf6485c | 15322 | |
6149aea9 | 15323 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15324 | { |
6149aea9 | 15325 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15326 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15327 | continue; |
8bf6485c | 15328 | |
6149aea9 PA |
15329 | /* If we have a filter, only save the breakpoints it accepts. */ |
15330 | if (filter && !filter (tp)) | |
15331 | continue; | |
15332 | ||
348d480f | 15333 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15334 | |
6149aea9 PA |
15335 | /* Note, we can't rely on tp->number for anything, as we can't |
15336 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15337 | instead. */ | |
15338 | ||
15339 | if (tp->cond_string) | |
15340 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15341 | ||
15342 | if (tp->ignore_count) | |
15343 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15344 | ||
2d9442cc | 15345 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15346 | { |
6c63c96a | 15347 | struct gdb_exception exception; |
a7bdde9e | 15348 | |
6149aea9 | 15349 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15350 | |
79a45e25 | 15351 | ui_out_redirect (current_uiout, fp); |
492d29ea | 15352 | TRY |
1042e4c0 | 15353 | { |
79a45e25 | 15354 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15355 | } |
492d29ea PA |
15356 | CATCH (ex, RETURN_MASK_ALL) |
15357 | { | |
6c63c96a | 15358 | ui_out_redirect (current_uiout, NULL); |
492d29ea PA |
15359 | throw_exception (ex); |
15360 | } | |
15361 | END_CATCH | |
1042e4c0 | 15362 | |
6c63c96a | 15363 | ui_out_redirect (current_uiout, NULL); |
a7bdde9e | 15364 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15365 | } |
6149aea9 PA |
15366 | |
15367 | if (tp->enable_state == bp_disabled) | |
99894e11 | 15368 | fprintf_unfiltered (fp, "disable $bpnum\n"); |
6149aea9 PA |
15369 | |
15370 | /* If this is a multi-location breakpoint, check if the locations | |
15371 | should be individually disabled. Watchpoint locations are | |
15372 | special, and not user visible. */ | |
15373 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15374 | { | |
15375 | struct bp_location *loc; | |
15376 | int n = 1; | |
15377 | ||
15378 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15379 | if (!loc->enabled) | |
15380 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15381 | } | |
1042e4c0 | 15382 | } |
8bf6485c | 15383 | |
6149aea9 | 15384 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15385 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15386 | ||
1042e4c0 | 15387 | if (from_tty) |
6149aea9 | 15388 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
c718be47 | 15389 | do_cleanups (cleanup); |
6149aea9 PA |
15390 | } |
15391 | ||
15392 | /* The `save breakpoints' command. */ | |
15393 | ||
15394 | static void | |
15395 | save_breakpoints_command (char *args, int from_tty) | |
15396 | { | |
15397 | save_breakpoints (args, from_tty, NULL); | |
15398 | } | |
15399 | ||
15400 | /* The `save tracepoints' command. */ | |
15401 | ||
15402 | static void | |
15403 | save_tracepoints_command (char *args, int from_tty) | |
15404 | { | |
15405 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15406 | } |
15407 | ||
15408 | /* Create a vector of all tracepoints. */ | |
15409 | ||
15410 | VEC(breakpoint_p) * | |
eeae04df | 15411 | all_tracepoints (void) |
1042e4c0 SS |
15412 | { |
15413 | VEC(breakpoint_p) *tp_vec = 0; | |
15414 | struct breakpoint *tp; | |
15415 | ||
15416 | ALL_TRACEPOINTS (tp) | |
15417 | { | |
15418 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15419 | } | |
15420 | ||
15421 | return tp_vec; | |
15422 | } | |
15423 | ||
c906108c | 15424 | \f |
4a64f543 MS |
15425 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15426 | commands. It is defined as a macro to prevent duplication. | |
15427 | COMMAND should be a string constant containing the name of the | |
15428 | command. */ | |
31e2b00f | 15429 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15430 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15431 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15432 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15433 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15434 | `-probe-dtrace' (for a DTrace probe).\n\ | |
31e2b00f AS |
15435 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15436 | If a line number is specified, break at start of code for that line.\n\ | |
15437 | If a function is specified, break at start of code for that function.\n\ | |
15438 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15439 | With no LOCATION, uses current execution address of the selected\n\ |
15440 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15441 | \n\ |
15442 | THREADNUM is the number from \"info threads\".\n\ | |
15443 | CONDITION is a boolean expression.\n\ | |
15444 | \n\ | |
d41c0fc8 PA |
15445 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15446 | conditions are different.\n\ | |
31e2b00f AS |
15447 | \n\ |
15448 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15449 | ||
44feb3ce TT |
15450 | /* List of subcommands for "catch". */ |
15451 | static struct cmd_list_element *catch_cmdlist; | |
15452 | ||
15453 | /* List of subcommands for "tcatch". */ | |
15454 | static struct cmd_list_element *tcatch_cmdlist; | |
15455 | ||
9ac4176b | 15456 | void |
44feb3ce | 15457 | add_catch_command (char *name, char *docstring, |
82ae6c8d | 15458 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15459 | completer_ftype *completer, |
44feb3ce TT |
15460 | void *user_data_catch, |
15461 | void *user_data_tcatch) | |
15462 | { | |
15463 | struct cmd_list_element *command; | |
15464 | ||
15465 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15466 | &catch_cmdlist); | |
15467 | set_cmd_sfunc (command, sfunc); | |
15468 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15469 | set_cmd_completer (command, completer); |
44feb3ce TT |
15470 | |
15471 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15472 | &tcatch_cmdlist); | |
15473 | set_cmd_sfunc (command, sfunc); | |
15474 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15475 | set_cmd_completer (command, completer); |
44feb3ce TT |
15476 | } |
15477 | ||
6149aea9 PA |
15478 | static void |
15479 | save_command (char *arg, int from_tty) | |
15480 | { | |
3e43a32a MS |
15481 | printf_unfiltered (_("\"save\" must be followed by " |
15482 | "the name of a save subcommand.\n")); | |
635c7e8a | 15483 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15484 | } |
15485 | ||
84f4c1fe PM |
15486 | struct breakpoint * |
15487 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15488 | void *data) | |
15489 | { | |
35df4500 | 15490 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15491 | |
35df4500 | 15492 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15493 | { |
15494 | if ((*callback) (b, data)) | |
15495 | return b; | |
15496 | } | |
15497 | ||
15498 | return NULL; | |
15499 | } | |
15500 | ||
0574c78f GB |
15501 | /* Zero if any of the breakpoint's locations could be a location where |
15502 | functions have been inlined, nonzero otherwise. */ | |
15503 | ||
15504 | static int | |
15505 | is_non_inline_function (struct breakpoint *b) | |
15506 | { | |
15507 | /* The shared library event breakpoint is set on the address of a | |
15508 | non-inline function. */ | |
15509 | if (b->type == bp_shlib_event) | |
15510 | return 1; | |
15511 | ||
15512 | return 0; | |
15513 | } | |
15514 | ||
15515 | /* Nonzero if the specified PC cannot be a location where functions | |
15516 | have been inlined. */ | |
15517 | ||
15518 | int | |
09ac7c10 TT |
15519 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15520 | const struct target_waitstatus *ws) | |
0574c78f GB |
15521 | { |
15522 | struct breakpoint *b; | |
15523 | struct bp_location *bl; | |
15524 | ||
15525 | ALL_BREAKPOINTS (b) | |
15526 | { | |
15527 | if (!is_non_inline_function (b)) | |
15528 | continue; | |
15529 | ||
15530 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15531 | { | |
15532 | if (!bl->shlib_disabled | |
09ac7c10 | 15533 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15534 | return 1; |
15535 | } | |
15536 | } | |
15537 | ||
15538 | return 0; | |
15539 | } | |
15540 | ||
2f202fde JK |
15541 | /* Remove any references to OBJFILE which is going to be freed. */ |
15542 | ||
15543 | void | |
15544 | breakpoint_free_objfile (struct objfile *objfile) | |
15545 | { | |
15546 | struct bp_location **locp, *loc; | |
15547 | ||
15548 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15549 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15550 | loc->symtab = NULL; |
15551 | } | |
15552 | ||
2060206e PA |
15553 | void |
15554 | initialize_breakpoint_ops (void) | |
15555 | { | |
15556 | static int initialized = 0; | |
15557 | ||
15558 | struct breakpoint_ops *ops; | |
15559 | ||
15560 | if (initialized) | |
15561 | return; | |
15562 | initialized = 1; | |
15563 | ||
15564 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15565 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15566 | internal and momentary breakpoints, etc.). */ | |
15567 | ops = &bkpt_base_breakpoint_ops; | |
15568 | *ops = base_breakpoint_ops; | |
15569 | ops->re_set = bkpt_re_set; | |
15570 | ops->insert_location = bkpt_insert_location; | |
15571 | ops->remove_location = bkpt_remove_location; | |
15572 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15573 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15574 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15575 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15576 | |
15577 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15578 | ops = &bkpt_breakpoint_ops; | |
15579 | *ops = bkpt_base_breakpoint_ops; | |
15580 | ops->re_set = bkpt_re_set; | |
15581 | ops->resources_needed = bkpt_resources_needed; | |
15582 | ops->print_it = bkpt_print_it; | |
15583 | ops->print_mention = bkpt_print_mention; | |
15584 | ops->print_recreate = bkpt_print_recreate; | |
15585 | ||
15586 | /* Ranged breakpoints. */ | |
15587 | ops = &ranged_breakpoint_ops; | |
15588 | *ops = bkpt_breakpoint_ops; | |
15589 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15590 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15591 | ops->print_it = print_it_ranged_breakpoint; | |
15592 | ops->print_one = print_one_ranged_breakpoint; | |
15593 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15594 | ops->print_mention = print_mention_ranged_breakpoint; | |
15595 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15596 | ||
15597 | /* Internal breakpoints. */ | |
15598 | ops = &internal_breakpoint_ops; | |
15599 | *ops = bkpt_base_breakpoint_ops; | |
15600 | ops->re_set = internal_bkpt_re_set; | |
15601 | ops->check_status = internal_bkpt_check_status; | |
15602 | ops->print_it = internal_bkpt_print_it; | |
15603 | ops->print_mention = internal_bkpt_print_mention; | |
15604 | ||
15605 | /* Momentary breakpoints. */ | |
15606 | ops = &momentary_breakpoint_ops; | |
15607 | *ops = bkpt_base_breakpoint_ops; | |
15608 | ops->re_set = momentary_bkpt_re_set; | |
15609 | ops->check_status = momentary_bkpt_check_status; | |
15610 | ops->print_it = momentary_bkpt_print_it; | |
15611 | ops->print_mention = momentary_bkpt_print_mention; | |
15612 | ||
e2e4d78b JK |
15613 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15614 | ops = &longjmp_breakpoint_ops; | |
15615 | *ops = momentary_breakpoint_ops; | |
15616 | ops->dtor = longjmp_bkpt_dtor; | |
15617 | ||
55aa24fb SDJ |
15618 | /* Probe breakpoints. */ |
15619 | ops = &bkpt_probe_breakpoint_ops; | |
15620 | *ops = bkpt_breakpoint_ops; | |
15621 | ops->insert_location = bkpt_probe_insert_location; | |
15622 | ops->remove_location = bkpt_probe_remove_location; | |
15623 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15624 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15625 | ||
2060206e PA |
15626 | /* Watchpoints. */ |
15627 | ops = &watchpoint_breakpoint_ops; | |
15628 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15629 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15630 | ops->re_set = re_set_watchpoint; |
15631 | ops->insert_location = insert_watchpoint; | |
15632 | ops->remove_location = remove_watchpoint; | |
15633 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15634 | ops->check_status = check_status_watchpoint; | |
15635 | ops->resources_needed = resources_needed_watchpoint; | |
15636 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15637 | ops->print_it = print_it_watchpoint; | |
15638 | ops->print_mention = print_mention_watchpoint; | |
15639 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15640 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15641 | |
15642 | /* Masked watchpoints. */ | |
15643 | ops = &masked_watchpoint_breakpoint_ops; | |
15644 | *ops = watchpoint_breakpoint_ops; | |
15645 | ops->insert_location = insert_masked_watchpoint; | |
15646 | ops->remove_location = remove_masked_watchpoint; | |
15647 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15648 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15649 | ops->print_it = print_it_masked_watchpoint; | |
15650 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15651 | ops->print_mention = print_mention_masked_watchpoint; | |
15652 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15653 | ||
15654 | /* Tracepoints. */ | |
15655 | ops = &tracepoint_breakpoint_ops; | |
15656 | *ops = base_breakpoint_ops; | |
15657 | ops->re_set = tracepoint_re_set; | |
15658 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15659 | ops->print_one_detail = tracepoint_print_one_detail; | |
15660 | ops->print_mention = tracepoint_print_mention; | |
15661 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15662 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15663 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15664 | ops->decode_linespec = tracepoint_decode_linespec; | |
15665 | ||
55aa24fb SDJ |
15666 | /* Probe tracepoints. */ |
15667 | ops = &tracepoint_probe_breakpoint_ops; | |
15668 | *ops = tracepoint_breakpoint_ops; | |
15669 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15670 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15671 | ||
983af33b SDJ |
15672 | /* Static tracepoints with marker (`-m'). */ |
15673 | ops = &strace_marker_breakpoint_ops; | |
15674 | *ops = tracepoint_breakpoint_ops; | |
15675 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15676 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15677 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15678 | |
15679 | /* Fork catchpoints. */ | |
15680 | ops = &catch_fork_breakpoint_ops; | |
15681 | *ops = base_breakpoint_ops; | |
15682 | ops->insert_location = insert_catch_fork; | |
15683 | ops->remove_location = remove_catch_fork; | |
15684 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15685 | ops->print_it = print_it_catch_fork; | |
15686 | ops->print_one = print_one_catch_fork; | |
15687 | ops->print_mention = print_mention_catch_fork; | |
15688 | ops->print_recreate = print_recreate_catch_fork; | |
15689 | ||
15690 | /* Vfork catchpoints. */ | |
15691 | ops = &catch_vfork_breakpoint_ops; | |
15692 | *ops = base_breakpoint_ops; | |
15693 | ops->insert_location = insert_catch_vfork; | |
15694 | ops->remove_location = remove_catch_vfork; | |
15695 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15696 | ops->print_it = print_it_catch_vfork; | |
15697 | ops->print_one = print_one_catch_vfork; | |
15698 | ops->print_mention = print_mention_catch_vfork; | |
15699 | ops->print_recreate = print_recreate_catch_vfork; | |
15700 | ||
15701 | /* Exec catchpoints. */ | |
15702 | ops = &catch_exec_breakpoint_ops; | |
15703 | *ops = base_breakpoint_ops; | |
15704 | ops->dtor = dtor_catch_exec; | |
15705 | ops->insert_location = insert_catch_exec; | |
15706 | ops->remove_location = remove_catch_exec; | |
15707 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15708 | ops->print_it = print_it_catch_exec; | |
15709 | ops->print_one = print_one_catch_exec; | |
15710 | ops->print_mention = print_mention_catch_exec; | |
15711 | ops->print_recreate = print_recreate_catch_exec; | |
15712 | ||
edcc5120 TT |
15713 | /* Solib-related catchpoints. */ |
15714 | ops = &catch_solib_breakpoint_ops; | |
15715 | *ops = base_breakpoint_ops; | |
15716 | ops->dtor = dtor_catch_solib; | |
15717 | ops->insert_location = insert_catch_solib; | |
15718 | ops->remove_location = remove_catch_solib; | |
15719 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15720 | ops->check_status = check_status_catch_solib; | |
15721 | ops->print_it = print_it_catch_solib; | |
15722 | ops->print_one = print_one_catch_solib; | |
15723 | ops->print_mention = print_mention_catch_solib; | |
15724 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15725 | |
15726 | ops = &dprintf_breakpoint_ops; | |
15727 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15728 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15729 | ops->resources_needed = bkpt_resources_needed; |
15730 | ops->print_it = bkpt_print_it; | |
15731 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15732 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15733 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15734 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15735 | } |
15736 | ||
8bfd80db YQ |
15737 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15738 | ||
15739 | static struct cmd_list_element *enablebreaklist = NULL; | |
15740 | ||
c906108c | 15741 | void |
fba45db2 | 15742 | _initialize_breakpoint (void) |
c906108c SS |
15743 | { |
15744 | struct cmd_list_element *c; | |
15745 | ||
2060206e PA |
15746 | initialize_breakpoint_ops (); |
15747 | ||
84acb35a | 15748 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15749 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15750 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15751 | |
55aa24fb SDJ |
15752 | breakpoint_objfile_key |
15753 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15754 | |
c906108c SS |
15755 | breakpoint_chain = 0; |
15756 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15757 | before a breakpoint is set. */ | |
15758 | breakpoint_count = 0; | |
15759 | ||
1042e4c0 SS |
15760 | tracepoint_count = 0; |
15761 | ||
1bedd215 AC |
15762 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15763 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15764 | Usage is `ignore N COUNT'.")); | |
c906108c | 15765 | |
1bedd215 AC |
15766 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15767 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15768 | Give breakpoint number as argument after \"commands\".\n\ |
15769 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15770 | The commands themselves follow starting on the next line.\n\ | |
15771 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15772 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15773 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15774 | |
d55637df | 15775 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15776 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15777 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15778 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15779 | set_cmd_completer (c, condition_completer); |
c906108c | 15780 | |
1bedd215 | 15781 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15782 | Set a temporary breakpoint.\n\ |
c906108c SS |
15783 | Like \"break\" except the breakpoint is only temporary,\n\ |
15784 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15785 | by using \"enable delete\" on the breakpoint number.\n\ |
15786 | \n" | |
15787 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15788 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15789 | |
1bedd215 | 15790 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15791 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15792 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15793 | some target hardware may not have this support.\n\ |
15794 | \n" | |
15795 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15796 | set_cmd_completer (c, location_completer); |
c906108c | 15797 | |
1bedd215 | 15798 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15799 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15800 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15801 | so it will be deleted when hit.\n\ |
15802 | \n" | |
15803 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15804 | set_cmd_completer (c, location_completer); |
c906108c | 15805 | |
1bedd215 AC |
15806 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15807 | Enable some breakpoints.\n\ | |
c906108c SS |
15808 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15809 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15810 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15811 | With a subcommand you can enable temporarily."), |
c906108c | 15812 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15813 | |
15814 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15815 | ||
84951ab5 | 15816 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15817 | Enable some breakpoints.\n\ |
c906108c SS |
15818 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15819 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15820 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15821 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15822 | |
1a966eab AC |
15823 | add_cmd ("once", no_class, enable_once_command, _("\ |
15824 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15825 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15826 | &enablebreaklist); |
15827 | ||
1a966eab AC |
15828 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15829 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15830 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15831 | &enablebreaklist); |
15832 | ||
816338b5 SS |
15833 | add_cmd ("count", no_class, enable_count_command, _("\ |
15834 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15835 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15836 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15837 | &enablebreaklist); | |
15838 | ||
1a966eab AC |
15839 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15840 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15841 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15842 | &enablelist); |
15843 | ||
1a966eab AC |
15844 | add_cmd ("once", no_class, enable_once_command, _("\ |
15845 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15846 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15847 | &enablelist); |
15848 | ||
15849 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15850 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15851 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15852 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15853 | &enablelist); |
15854 | ||
1bedd215 AC |
15855 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15856 | Disable some breakpoints.\n\ | |
c906108c SS |
15857 | Arguments are breakpoint numbers with spaces in between.\n\ |
15858 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15859 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15860 | &disablelist, "disable ", 1, &cmdlist); |
15861 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15862 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15863 | |
1a966eab AC |
15864 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15865 | Disable some breakpoints.\n\ | |
c906108c SS |
15866 | Arguments are breakpoint numbers with spaces in between.\n\ |
15867 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15868 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15869 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15870 | &disablelist); |
15871 | ||
1bedd215 AC |
15872 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15873 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15874 | Arguments are breakpoint numbers with spaces in between.\n\ |
15875 | To delete all breakpoints, give no argument.\n\ | |
15876 | \n\ | |
15877 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15878 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15879 | &deletelist, "delete ", 1, &cmdlist); |
15880 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15881 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15882 | |
1a966eab AC |
15883 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15884 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15885 | Arguments are breakpoint numbers with spaces in between.\n\ |
15886 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15887 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15888 | &deletelist); |
15889 | ||
1bedd215 AC |
15890 | add_com ("clear", class_breakpoint, clear_command, _("\ |
15891 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
15892 | Argument may be line number, function name, or \"*\" and an address.\n\ |
15893 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
15894 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
15895 | If an address is specified, breakpoints at that address are cleared.\n\ |
15896 | \n\ | |
15897 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
15898 | is executing in.\n\ |
15899 | \n\ | |
1bedd215 | 15900 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15901 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15902 | |
1bedd215 | 15903 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
15904 | Set breakpoint at specified line or function.\n" |
15905 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 15906 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15907 | |
c906108c SS |
15908 | add_com_alias ("b", "break", class_run, 1); |
15909 | add_com_alias ("br", "break", class_run, 1); | |
15910 | add_com_alias ("bre", "break", class_run, 1); | |
15911 | add_com_alias ("brea", "break", class_run, 1); | |
15912 | ||
c906108c SS |
15913 | if (dbx_commands) |
15914 | { | |
1bedd215 AC |
15915 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15916 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15917 | &stoplist, "stop ", 1, &cmdlist); |
15918 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15919 | _("Break in function or address."), &stoplist); |
c5aa993b | 15920 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15921 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
15922 | add_com ("status", class_info, breakpoints_info, _("\ |
15923 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15924 | The \"Type\" column indicates one of:\n\ |
15925 | \tbreakpoint - normal breakpoint\n\ | |
15926 | \twatchpoint - watchpoint\n\ | |
15927 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15928 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15929 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15930 | address and file/line number respectively.\n\ |
15931 | \n\ | |
15932 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15933 | are set to the address of the last breakpoint listed unless the command\n\ |
15934 | is prefixed with \"server \".\n\n\ | |
c906108c | 15935 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15936 | breakpoint set.")); |
c906108c SS |
15937 | } |
15938 | ||
1bedd215 | 15939 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 15940 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15941 | The \"Type\" column indicates one of:\n\ |
15942 | \tbreakpoint - normal breakpoint\n\ | |
15943 | \twatchpoint - watchpoint\n\ | |
15944 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15945 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15946 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15947 | address and file/line number respectively.\n\ |
15948 | \n\ | |
15949 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15950 | are set to the address of the last breakpoint listed unless the command\n\ |
15951 | is prefixed with \"server \".\n\n\ | |
c906108c | 15952 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15953 | breakpoint set.")); |
c906108c | 15954 | |
6b04bdb7 MS |
15955 | add_info_alias ("b", "breakpoints", 1); |
15956 | ||
1a966eab AC |
15957 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15958 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15959 | The \"Type\" column indicates one of:\n\ |
15960 | \tbreakpoint - normal breakpoint\n\ | |
15961 | \twatchpoint - watchpoint\n\ | |
15962 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15963 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15964 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15965 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15966 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15967 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15968 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15969 | address and file/line number respectively.\n\ |
15970 | \n\ | |
15971 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15972 | are set to the address of the last breakpoint listed unless the command\n\ |
15973 | is prefixed with \"server \".\n\n\ | |
c906108c | 15974 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15975 | breakpoint set."), |
c906108c SS |
15976 | &maintenanceinfolist); |
15977 | ||
44feb3ce TT |
15978 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15979 | Set catchpoints to catch events."), | |
15980 | &catch_cmdlist, "catch ", | |
15981 | 0/*allow-unknown*/, &cmdlist); | |
15982 | ||
15983 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15984 | Set temporary catchpoints to catch events."), | |
15985 | &tcatch_cmdlist, "tcatch ", | |
15986 | 0/*allow-unknown*/, &cmdlist); | |
15987 | ||
44feb3ce TT |
15988 | add_catch_command ("fork", _("Catch calls to fork."), |
15989 | catch_fork_command_1, | |
a96d9b2e | 15990 | NULL, |
44feb3ce TT |
15991 | (void *) (uintptr_t) catch_fork_permanent, |
15992 | (void *) (uintptr_t) catch_fork_temporary); | |
15993 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15994 | catch_fork_command_1, | |
a96d9b2e | 15995 | NULL, |
44feb3ce TT |
15996 | (void *) (uintptr_t) catch_vfork_permanent, |
15997 | (void *) (uintptr_t) catch_vfork_temporary); | |
15998 | add_catch_command ("exec", _("Catch calls to exec."), | |
15999 | catch_exec_command_1, | |
a96d9b2e SDJ |
16000 | NULL, |
16001 | CATCH_PERMANENT, | |
16002 | CATCH_TEMPORARY); | |
edcc5120 TT |
16003 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16004 | Usage: catch load [REGEX]\n\ | |
16005 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16006 | catch_load_command_1, | |
16007 | NULL, | |
16008 | CATCH_PERMANENT, | |
16009 | CATCH_TEMPORARY); | |
16010 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16011 | Usage: catch unload [REGEX]\n\ | |
16012 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16013 | catch_unload_command_1, | |
16014 | NULL, | |
16015 | CATCH_PERMANENT, | |
16016 | CATCH_TEMPORARY); | |
c5aa993b | 16017 | |
1bedd215 AC |
16018 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16019 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16020 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16021 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16022 | an expression changes.\n\ |
16023 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16024 | the memory to which it refers.")); | |
65d12d83 | 16025 | set_cmd_completer (c, expression_completer); |
c906108c | 16026 | |
1bedd215 AC |
16027 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16028 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16029 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16030 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16031 | an expression is read.\n\ |
16032 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16033 | the memory to which it refers.")); | |
65d12d83 | 16034 | set_cmd_completer (c, expression_completer); |
c906108c | 16035 | |
1bedd215 AC |
16036 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16037 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16038 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16039 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16040 | an expression is either read or written.\n\ |
16041 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16042 | the memory to which it refers.")); | |
65d12d83 | 16043 | set_cmd_completer (c, expression_completer); |
c906108c | 16044 | |
d77f58be | 16045 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16046 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16047 | |
920d2a44 AC |
16048 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16049 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16050 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16051 | &can_use_hw_watchpoints, _("\ | |
16052 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16053 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16054 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16055 | such is available. (However, any hardware watchpoints that were\n\ | |
16056 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16057 | hardware.)"), |
16058 | NULL, | |
920d2a44 | 16059 | show_can_use_hw_watchpoints, |
85c07804 | 16060 | &setlist, &showlist); |
c906108c SS |
16061 | |
16062 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16063 | |
1042e4c0 SS |
16064 | /* Tracepoint manipulation commands. */ |
16065 | ||
16066 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16067 | Set a tracepoint at specified line or function.\n\ | |
16068 | \n" | |
16069 | BREAK_ARGS_HELP ("trace") "\n\ | |
16070 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16071 | set_cmd_completer (c, location_completer); | |
16072 | ||
16073 | add_com_alias ("tp", "trace", class_alias, 0); | |
16074 | add_com_alias ("tr", "trace", class_alias, 1); | |
16075 | add_com_alias ("tra", "trace", class_alias, 1); | |
16076 | add_com_alias ("trac", "trace", class_alias, 1); | |
16077 | ||
7a697b8d SS |
16078 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16079 | Set a fast tracepoint at specified line or function.\n\ | |
16080 | \n" | |
16081 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16082 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16083 | set_cmd_completer (c, location_completer); | |
16084 | ||
0fb4aa4b PA |
16085 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16086 | Set a static tracepoint at specified line, function or marker.\n\ | |
16087 | \n\ | |
16088 | strace [LOCATION] [if CONDITION]\n\ | |
16089 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16090 | or -m MARKER_ID.\n\ | |
16091 | If a line number is specified, probe the marker at start of code\n\ | |
16092 | for that line. If a function is specified, probe the marker at start\n\ | |
16093 | of code for that function. If an address is specified, probe the marker\n\ | |
16094 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16095 | with that name. With no LOCATION, uses current execution address of\n\ | |
16096 | the selected stack frame.\n\ | |
16097 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16098 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16099 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16100 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16101 | \n\ | |
16102 | CONDITION is a boolean expression.\n\ | |
16103 | \n\ | |
d41c0fc8 PA |
16104 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16105 | conditions are different.\n\ | |
0fb4aa4b PA |
16106 | \n\ |
16107 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16108 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16109 | set_cmd_completer (c, location_completer); | |
16110 | ||
1042e4c0 | 16111 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16112 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16113 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16114 | last tracepoint set.")); | |
16115 | ||
16116 | add_info_alias ("tp", "tracepoints", 1); | |
16117 | ||
16118 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16119 | Delete specified tracepoints.\n\ | |
16120 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16121 | No argument means delete all tracepoints."), | |
16122 | &deletelist); | |
7e20dfcd | 16123 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16124 | |
16125 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16126 | Disable specified tracepoints.\n\ | |
16127 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16128 | No argument means disable all tracepoints."), | |
16129 | &disablelist); | |
16130 | deprecate_cmd (c, "disable"); | |
16131 | ||
16132 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16133 | Enable specified tracepoints.\n\ | |
16134 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16135 | No argument means enable all tracepoints."), | |
16136 | &enablelist); | |
16137 | deprecate_cmd (c, "enable"); | |
16138 | ||
16139 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16140 | Set the passcount for a tracepoint.\n\ | |
16141 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16142 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16143 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16144 | ||
6149aea9 PA |
16145 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16146 | _("Save breakpoint definitions as a script."), | |
16147 | &save_cmdlist, "save ", | |
16148 | 0/*allow-unknown*/, &cmdlist); | |
16149 | ||
16150 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16151 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16152 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16153 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16154 | session to restore them."), | |
16155 | &save_cmdlist); | |
16156 | set_cmd_completer (c, filename_completer); | |
16157 | ||
16158 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16159 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16160 | Use the 'source' command in another debug session to restore them."), |
16161 | &save_cmdlist); | |
1042e4c0 SS |
16162 | set_cmd_completer (c, filename_completer); |
16163 | ||
6149aea9 PA |
16164 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16165 | deprecate_cmd (c, "save tracepoints"); | |
16166 | ||
1bedd215 | 16167 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16168 | Breakpoint specific settings\n\ |
16169 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16170 | pending breakpoint behavior"), |
fa8d40ab JJ |
16171 | &breakpoint_set_cmdlist, "set breakpoint ", |
16172 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16173 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16174 | Breakpoint specific settings\n\ |
16175 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16176 | pending breakpoint behavior"), |
fa8d40ab JJ |
16177 | &breakpoint_show_cmdlist, "show breakpoint ", |
16178 | 0/*allow-unknown*/, &showlist); | |
16179 | ||
7915a72c AC |
16180 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16181 | &pending_break_support, _("\ | |
16182 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16183 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16184 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16185 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16186 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16187 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16188 | NULL, |
920d2a44 | 16189 | show_pending_break_support, |
6e1d7d6c AC |
16190 | &breakpoint_set_cmdlist, |
16191 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16192 | |
16193 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16194 | |
16195 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16196 | &automatic_hardware_breakpoints, _("\ | |
16197 | Set automatic usage of hardware breakpoints."), _("\ | |
16198 | Show automatic usage of hardware breakpoints."), _("\ | |
16199 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16200 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16201 | a warning will be emitted for such breakpoints."), | |
16202 | NULL, | |
16203 | show_automatic_hardware_breakpoints, | |
16204 | &breakpoint_set_cmdlist, | |
16205 | &breakpoint_show_cmdlist); | |
74960c60 | 16206 | |
a25a5a45 PA |
16207 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16208 | &always_inserted_mode, _("\ | |
74960c60 VP |
16209 | Set mode for inserting breakpoints."), _("\ |
16210 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16211 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16212 | they're created, kept inserted even when execution stops, and removed\n\ | |
16213 | only when the user deletes them. When this mode is off (the default),\n\ | |
16214 | breakpoints are inserted only when execution continues, and removed\n\ | |
16215 | when execution stops."), | |
72d0e2c5 YQ |
16216 | NULL, |
16217 | &show_always_inserted_mode, | |
16218 | &breakpoint_set_cmdlist, | |
16219 | &breakpoint_show_cmdlist); | |
f1310107 | 16220 | |
b775012e LM |
16221 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16222 | condition_evaluation_enums, | |
16223 | &condition_evaluation_mode_1, _("\ | |
16224 | Set mode of breakpoint condition evaluation."), _("\ | |
16225 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16226 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16227 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16228 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16229 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16230 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16231 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16232 | be set to \"gdb\""), | |
16233 | &set_condition_evaluation_mode, | |
16234 | &show_condition_evaluation_mode, | |
16235 | &breakpoint_set_cmdlist, | |
16236 | &breakpoint_show_cmdlist); | |
16237 | ||
f1310107 TJB |
16238 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16239 | Set a breakpoint for an address range.\n\ | |
16240 | break-range START-LOCATION, END-LOCATION\n\ | |
16241 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16242 | LINENUM, for that line in the current file,\n\ | |
16243 | FILE:LINENUM, for that line in that file,\n\ | |
16244 | +OFFSET, for that number of lines after the current line\n\ | |
16245 | or the start of the range\n\ | |
16246 | FUNCTION, for the first line in that function,\n\ | |
16247 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16248 | *ADDRESS, for the instruction at that address.\n\ | |
16249 | \n\ | |
16250 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16251 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16252 | range (including START-LOCATION and END-LOCATION).")); | |
16253 | ||
e7e0cddf SS |
16254 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16255 | Set a dynamic printf at specified line or function.\n\ | |
16256 | dprintf location,format string,arg1,arg2,...\n\ | |
16257 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16258 | If a line number is specified, break at start of code for that line.\n\ | |
0e4777df | 16259 | If a function is specified, break at start of code for that function.")); |
e7e0cddf SS |
16260 | set_cmd_completer (c, location_completer); |
16261 | ||
16262 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16263 | dprintf_style_enums, &dprintf_style, _("\ | |
16264 | Set the style of usage for dynamic printf."), _("\ | |
16265 | Show the style of usage for dynamic printf."), _("\ | |
16266 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16267 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16268 | console, as with the \"printf\" command.\n\ | |
16269 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16270 | program; by default printf(), but you can choose a different function or\n\ | |
16271 | output stream by setting dprintf-function and dprintf-channel."), | |
16272 | update_dprintf_commands, NULL, | |
16273 | &setlist, &showlist); | |
16274 | ||
16275 | dprintf_function = xstrdup ("printf"); | |
16276 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16277 | &dprintf_function, _("\ | |
16278 | Set the function to use for dynamic printf"), _("\ | |
16279 | Show the function to use for dynamic printf"), NULL, | |
16280 | update_dprintf_commands, NULL, | |
16281 | &setlist, &showlist); | |
16282 | ||
16283 | dprintf_channel = xstrdup (""); | |
16284 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16285 | &dprintf_channel, _("\ | |
16286 | Set the channel to use for dynamic printf"), _("\ | |
16287 | Show the channel to use for dynamic printf"), NULL, | |
16288 | update_dprintf_commands, NULL, | |
16289 | &setlist, &showlist); | |
16290 | ||
d3ce09f5 SS |
16291 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16292 | &disconnected_dprintf, _("\ | |
16293 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16294 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16295 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16296 | even if GDB disconnects or detaches from the target."), | |
16297 | NULL, | |
16298 | NULL, | |
16299 | &setlist, &showlist); | |
16300 | ||
16301 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16302 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16303 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16304 | ||
765dc015 | 16305 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16306 | |
16307 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16308 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16309 | } |