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 | 69 | #include "format.h" |
f00aae0f | 70 | #include "location.h" |
d3ce09f5 | 71 | |
1042e4c0 SS |
72 | /* readline include files */ |
73 | #include "readline/readline.h" | |
74 | #include "readline/history.h" | |
75 | ||
76 | /* readline defines this. */ | |
77 | #undef savestring | |
78 | ||
034dad6f | 79 | #include "mi/mi-common.h" |
6dddc817 | 80 | #include "extension.h" |
104c1213 | 81 | |
e7e8980f YQ |
82 | /* Enums for exception-handling support. */ |
83 | enum exception_event_kind | |
84 | { | |
85 | EX_EVENT_THROW, | |
591f19e8 | 86 | EX_EVENT_RETHROW, |
e7e8980f YQ |
87 | EX_EVENT_CATCH |
88 | }; | |
89 | ||
4a64f543 | 90 | /* Prototypes for local functions. */ |
c906108c | 91 | |
a14ed312 | 92 | static void enable_delete_command (char *, int); |
c906108c | 93 | |
a14ed312 | 94 | static void enable_once_command (char *, int); |
c906108c | 95 | |
816338b5 SS |
96 | static void enable_count_command (char *, int); |
97 | ||
a14ed312 | 98 | static void disable_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void enable_command (char *, int); |
c906108c | 101 | |
95a42b64 TT |
102 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
103 | void *), | |
104 | void *); | |
c906108c | 105 | |
a14ed312 | 106 | static void ignore_command (char *, int); |
c906108c | 107 | |
4efb68b1 | 108 | static int breakpoint_re_set_one (void *); |
c906108c | 109 | |
348d480f PA |
110 | static void breakpoint_re_set_default (struct breakpoint *); |
111 | ||
f00aae0f KS |
112 | static void |
113 | create_sals_from_location_default (const struct event_location *location, | |
114 | struct linespec_result *canonical, | |
115 | enum bptype type_wanted); | |
983af33b SDJ |
116 | |
117 | static void create_breakpoints_sal_default (struct gdbarch *, | |
118 | struct linespec_result *, | |
e7e0cddf | 119 | char *, char *, enum bptype, |
983af33b SDJ |
120 | enum bpdisp, int, int, |
121 | int, | |
122 | const struct breakpoint_ops *, | |
44f238bb | 123 | int, int, int, unsigned); |
983af33b | 124 | |
f00aae0f KS |
125 | static void decode_location_default (struct breakpoint *b, |
126 | const struct event_location *location, | |
127 | struct symtabs_and_lines *sals); | |
983af33b | 128 | |
a14ed312 | 129 | static void clear_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | static void catch_command (char *, int); |
c906108c | 132 | |
a9634178 | 133 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 134 | |
98deb0da | 135 | static void break_command_1 (char *, int, int); |
c906108c | 136 | |
a14ed312 | 137 | static void mention (struct breakpoint *); |
c906108c | 138 | |
348d480f PA |
139 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
140 | enum bptype, | |
c0a91b2b | 141 | const struct breakpoint_ops *); |
3742cc8b YQ |
142 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
143 | const struct symtab_and_line *); | |
144 | ||
4a64f543 MS |
145 | /* This function is used in gdbtk sources and thus can not be made |
146 | static. */ | |
63c252f8 | 147 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 148 | struct symtab_and_line, |
c0a91b2b TT |
149 | enum bptype, |
150 | const struct breakpoint_ops *); | |
c906108c | 151 | |
06edf0c0 PA |
152 | static struct breakpoint * |
153 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
154 | enum bptype type, | |
a1aa2221 LM |
155 | const struct breakpoint_ops *ops, |
156 | int loc_enabled); | |
06edf0c0 | 157 | |
76897487 KB |
158 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
159 | ||
a6d9a66e UW |
160 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
161 | CORE_ADDR bpaddr, | |
88f7da05 | 162 | enum bptype bptype); |
76897487 | 163 | |
6c95b8df PA |
164 | static void describe_other_breakpoints (struct gdbarch *, |
165 | struct program_space *, CORE_ADDR, | |
5af949e3 | 166 | struct obj_section *, int); |
c906108c | 167 | |
85d721b8 PA |
168 | static int watchpoint_locations_match (struct bp_location *loc1, |
169 | struct bp_location *loc2); | |
170 | ||
f1310107 TJB |
171 | static int breakpoint_location_address_match (struct bp_location *bl, |
172 | struct address_space *aspace, | |
173 | CORE_ADDR addr); | |
174 | ||
a14ed312 | 175 | static void breakpoints_info (char *, int); |
c906108c | 176 | |
d77f58be SS |
177 | static void watchpoints_info (char *, int); |
178 | ||
e5a67952 MS |
179 | static int breakpoint_1 (char *, int, |
180 | int (*) (const struct breakpoint *)); | |
c906108c | 181 | |
4efb68b1 | 182 | static int breakpoint_cond_eval (void *); |
c906108c | 183 | |
4efb68b1 | 184 | static void cleanup_executing_breakpoints (void *); |
c906108c | 185 | |
a14ed312 | 186 | static void commands_command (char *, int); |
c906108c | 187 | |
a14ed312 | 188 | static void condition_command (char *, int); |
c906108c | 189 | |
c5aa993b JM |
190 | typedef enum |
191 | { | |
192 | mark_inserted, | |
193 | mark_uninserted | |
194 | } | |
195 | insertion_state_t; | |
c906108c | 196 | |
0bde7532 | 197 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 198 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 199 | |
e514a9d6 | 200 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 201 | |
4efb68b1 | 202 | static int watchpoint_check (void *); |
c906108c | 203 | |
a14ed312 | 204 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 205 | |
a14ed312 | 206 | static int hw_breakpoint_used_count (void); |
c906108c | 207 | |
a1398e0c PA |
208 | static int hw_watchpoint_use_count (struct breakpoint *); |
209 | ||
210 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
211 | enum bptype type, | |
212 | int *other_type_used); | |
c906108c | 213 | |
a14ed312 | 214 | static void hbreak_command (char *, int); |
c906108c | 215 | |
a14ed312 | 216 | static void thbreak_command (char *, int); |
c906108c | 217 | |
816338b5 SS |
218 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
219 | int count); | |
c906108c | 220 | |
a14ed312 | 221 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 222 | |
a14ed312 | 223 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 224 | |
a14ed312 | 225 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 226 | |
a14ed312 | 227 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 228 | |
fe3f5fa8 | 229 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
230 | static void incref_bp_location (struct bp_location *loc); |
231 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 232 | |
39d61571 | 233 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 234 | |
44702360 PA |
235 | /* update_global_location_list's modes of operation wrt to whether to |
236 | insert locations now. */ | |
237 | enum ugll_insert_mode | |
238 | { | |
239 | /* Don't insert any breakpoint locations into the inferior, only | |
240 | remove already-inserted locations that no longer should be | |
241 | inserted. Functions that delete a breakpoint or breakpoints | |
242 | should specify this mode, so that deleting a breakpoint doesn't | |
243 | have the side effect of inserting the locations of other | |
244 | breakpoints that are marked not-inserted, but should_be_inserted | |
245 | returns true on them. | |
246 | ||
247 | This behavior is useful is situations close to tear-down -- e.g., | |
248 | after an exec, while the target still has execution, but | |
249 | breakpoint shadows of the previous executable image should *NOT* | |
250 | be restored to the new image; or before detaching, where the | |
251 | target still has execution and wants to delete breakpoints from | |
252 | GDB's lists, and all breakpoints had already been removed from | |
253 | the inferior. */ | |
254 | UGLL_DONT_INSERT, | |
255 | ||
a25a5a45 PA |
256 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
257 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
258 | UGLL_MAY_INSERT, |
259 | ||
a25a5a45 PA |
260 | /* Insert locations now, irrespective of |
261 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
262 | stopped right now, and the user did "continue". We need to | |
263 | insert breakpoints _before_ resuming the target, but | |
264 | UGLL_MAY_INSERT wouldn't insert them, because | |
265 | breakpoints_should_be_inserted_now returns false at that point, | |
266 | as no thread is running yet. */ | |
04086b45 | 267 | UGLL_INSERT |
44702360 PA |
268 | }; |
269 | ||
270 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 271 | |
44702360 | 272 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 273 | |
d77f58be | 274 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
275 | |
276 | static void insert_breakpoint_locations (void); | |
a5606eee | 277 | |
1042e4c0 SS |
278 | static void tracepoints_info (char *, int); |
279 | ||
280 | static void delete_trace_command (char *, int); | |
281 | ||
282 | static void enable_trace_command (char *, int); | |
283 | ||
284 | static void disable_trace_command (char *, int); | |
285 | ||
286 | static void trace_pass_command (char *, int); | |
287 | ||
558a9d82 YQ |
288 | static void set_tracepoint_count (int num); |
289 | ||
9c06b0b4 TJB |
290 | static int is_masked_watchpoint (const struct breakpoint *b); |
291 | ||
b775012e LM |
292 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
293 | ||
983af33b SDJ |
294 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
295 | otherwise. */ | |
296 | ||
297 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 298 | |
2060206e PA |
299 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
300 | that are implemented on top of software or hardware breakpoints | |
301 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
302 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
303 | ||
304 | /* Internal breakpoints class type. */ | |
06edf0c0 | 305 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
306 | |
307 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
308 | static struct breakpoint_ops momentary_breakpoint_ops; |
309 | ||
e2e4d78b JK |
310 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
311 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
312 | ||
2060206e PA |
313 | /* The breakpoint_ops structure to be used in regular user created |
314 | breakpoints. */ | |
315 | struct breakpoint_ops bkpt_breakpoint_ops; | |
316 | ||
55aa24fb SDJ |
317 | /* Breakpoints set on probes. */ |
318 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
319 | ||
e7e0cddf | 320 | /* Dynamic printf class type. */ |
c5867ab6 | 321 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 322 | |
d3ce09f5 SS |
323 | /* The style in which to perform a dynamic printf. This is a user |
324 | option because different output options have different tradeoffs; | |
325 | if GDB does the printing, there is better error handling if there | |
326 | is a problem with any of the arguments, but using an inferior | |
327 | function lets you have special-purpose printers and sending of | |
328 | output to the same place as compiled-in print functions. */ | |
329 | ||
330 | static const char dprintf_style_gdb[] = "gdb"; | |
331 | static const char dprintf_style_call[] = "call"; | |
332 | static const char dprintf_style_agent[] = "agent"; | |
333 | static const char *const dprintf_style_enums[] = { | |
334 | dprintf_style_gdb, | |
335 | dprintf_style_call, | |
336 | dprintf_style_agent, | |
337 | NULL | |
338 | }; | |
339 | static const char *dprintf_style = dprintf_style_gdb; | |
340 | ||
341 | /* The function to use for dynamic printf if the preferred style is to | |
342 | call into the inferior. The value is simply a string that is | |
343 | copied into the command, so it can be anything that GDB can | |
344 | evaluate to a callable address, not necessarily a function name. */ | |
345 | ||
346 | static char *dprintf_function = ""; | |
347 | ||
348 | /* The channel to use for dynamic printf if the preferred style is to | |
349 | call into the inferior; if a nonempty string, it will be passed to | |
350 | the call as the first argument, with the format string as the | |
351 | second. As with the dprintf function, this can be anything that | |
352 | GDB knows how to evaluate, so in addition to common choices like | |
353 | "stderr", this could be an app-specific expression like | |
354 | "mystreams[curlogger]". */ | |
355 | ||
356 | static char *dprintf_channel = ""; | |
357 | ||
358 | /* True if dprintf commands should continue to operate even if GDB | |
359 | has disconnected. */ | |
360 | static int disconnected_dprintf = 1; | |
361 | ||
5cea2a26 PA |
362 | /* A reference-counted struct command_line. This lets multiple |
363 | breakpoints share a single command list. */ | |
364 | struct counted_command_line | |
365 | { | |
366 | /* The reference count. */ | |
367 | int refc; | |
368 | ||
369 | /* The command list. */ | |
370 | struct command_line *commands; | |
371 | }; | |
372 | ||
373 | struct command_line * | |
374 | breakpoint_commands (struct breakpoint *b) | |
375 | { | |
376 | return b->commands ? b->commands->commands : NULL; | |
377 | } | |
3daf8fe5 | 378 | |
f3b1572e PA |
379 | /* Flag indicating that a command has proceeded the inferior past the |
380 | current breakpoint. */ | |
381 | ||
382 | static int breakpoint_proceeded; | |
383 | ||
956a9fb9 | 384 | const char * |
2cec12e5 AR |
385 | bpdisp_text (enum bpdisp disp) |
386 | { | |
4a64f543 MS |
387 | /* NOTE: the following values are a part of MI protocol and |
388 | represent values of 'disp' field returned when inferior stops at | |
389 | a breakpoint. */ | |
bc043ef3 | 390 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 391 | |
2cec12e5 AR |
392 | return bpdisps[(int) disp]; |
393 | } | |
c906108c | 394 | |
4a64f543 | 395 | /* Prototypes for exported functions. */ |
c906108c | 396 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 397 | if such is available. */ |
c906108c SS |
398 | static int can_use_hw_watchpoints; |
399 | ||
920d2a44 AC |
400 | static void |
401 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
402 | struct cmd_list_element *c, | |
403 | const char *value) | |
404 | { | |
3e43a32a MS |
405 | fprintf_filtered (file, |
406 | _("Debugger's willingness to use " | |
407 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
408 | value); |
409 | } | |
410 | ||
fa8d40ab JJ |
411 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
412 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 413 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
414 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
415 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
416 | static void |
417 | show_pending_break_support (struct ui_file *file, int from_tty, | |
418 | struct cmd_list_element *c, | |
419 | const char *value) | |
420 | { | |
3e43a32a MS |
421 | fprintf_filtered (file, |
422 | _("Debugger's behavior regarding " | |
423 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
424 | value); |
425 | } | |
fa8d40ab | 426 | |
765dc015 | 427 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 428 | set with "break" but falling in read-only memory. |
765dc015 VP |
429 | If 0, gdb will warn about such breakpoints, but won't automatically |
430 | use hardware breakpoints. */ | |
431 | static int automatic_hardware_breakpoints; | |
432 | static void | |
433 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
434 | struct cmd_list_element *c, | |
435 | const char *value) | |
436 | { | |
3e43a32a MS |
437 | fprintf_filtered (file, |
438 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
439 | value); |
440 | } | |
441 | ||
a25a5a45 PA |
442 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
443 | stopped, and immediately inserts any new breakpoints as soon as | |
444 | they're created. If off (default), GDB keeps breakpoints off of | |
445 | the target as long as possible. That is, it delays inserting | |
446 | breakpoints until the next resume, and removes them again when the | |
447 | target fully stops. This is a bit safer in case GDB crashes while | |
448 | processing user input. */ | |
449 | static int always_inserted_mode = 0; | |
72d0e2c5 | 450 | |
33e5cbd6 | 451 | static void |
74960c60 | 452 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 453 | struct cmd_list_element *c, const char *value) |
74960c60 | 454 | { |
a25a5a45 PA |
455 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
456 | value); | |
74960c60 VP |
457 | } |
458 | ||
b57bacec PA |
459 | /* See breakpoint.h. */ |
460 | ||
33e5cbd6 | 461 | int |
a25a5a45 | 462 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 463 | { |
a25a5a45 PA |
464 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
465 | { | |
466 | /* If breakpoints are global, they should be inserted even if no | |
467 | thread under gdb's control is running, or even if there are | |
468 | no threads under GDB's control yet. */ | |
469 | return 1; | |
470 | } | |
471 | else if (target_has_execution) | |
472 | { | |
372316f1 PA |
473 | struct thread_info *tp; |
474 | ||
a25a5a45 PA |
475 | if (always_inserted_mode) |
476 | { | |
477 | /* The user wants breakpoints inserted even if all threads | |
478 | are stopped. */ | |
479 | return 1; | |
480 | } | |
481 | ||
b57bacec PA |
482 | if (threads_are_executing ()) |
483 | return 1; | |
372316f1 PA |
484 | |
485 | /* Don't remove breakpoints yet if, even though all threads are | |
486 | stopped, we still have events to process. */ | |
487 | ALL_NON_EXITED_THREADS (tp) | |
488 | if (tp->resumed | |
489 | && tp->suspend.waitstatus_pending_p) | |
490 | return 1; | |
a25a5a45 PA |
491 | } |
492 | return 0; | |
33e5cbd6 | 493 | } |
765dc015 | 494 | |
b775012e LM |
495 | static const char condition_evaluation_both[] = "host or target"; |
496 | ||
497 | /* Modes for breakpoint condition evaluation. */ | |
498 | static const char condition_evaluation_auto[] = "auto"; | |
499 | static const char condition_evaluation_host[] = "host"; | |
500 | static const char condition_evaluation_target[] = "target"; | |
501 | static const char *const condition_evaluation_enums[] = { | |
502 | condition_evaluation_auto, | |
503 | condition_evaluation_host, | |
504 | condition_evaluation_target, | |
505 | NULL | |
506 | }; | |
507 | ||
508 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
509 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
510 | ||
511 | /* Global that we use to display information to the user (gets its value from | |
512 | condition_evaluation_mode_1. */ | |
513 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
514 | ||
515 | /* Translate a condition evaluation mode MODE into either "host" | |
516 | or "target". This is used mostly to translate from "auto" to the | |
517 | real setting that is being used. It returns the translated | |
518 | evaluation mode. */ | |
519 | ||
520 | static const char * | |
521 | translate_condition_evaluation_mode (const char *mode) | |
522 | { | |
523 | if (mode == condition_evaluation_auto) | |
524 | { | |
525 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
526 | return condition_evaluation_target; | |
527 | else | |
528 | return condition_evaluation_host; | |
529 | } | |
530 | else | |
531 | return mode; | |
532 | } | |
533 | ||
534 | /* Discovers what condition_evaluation_auto translates to. */ | |
535 | ||
536 | static const char * | |
537 | breakpoint_condition_evaluation_mode (void) | |
538 | { | |
539 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
540 | } | |
541 | ||
542 | /* Return true if GDB should evaluate breakpoint conditions or false | |
543 | otherwise. */ | |
544 | ||
545 | static int | |
546 | gdb_evaluates_breakpoint_condition_p (void) | |
547 | { | |
548 | const char *mode = breakpoint_condition_evaluation_mode (); | |
549 | ||
550 | return (mode == condition_evaluation_host); | |
551 | } | |
552 | ||
a14ed312 | 553 | void _initialize_breakpoint (void); |
c906108c | 554 | |
c906108c SS |
555 | /* Are we executing breakpoint commands? */ |
556 | static int executing_breakpoint_commands; | |
557 | ||
c02f5703 MS |
558 | /* Are overlay event breakpoints enabled? */ |
559 | static int overlay_events_enabled; | |
560 | ||
e09342b5 TJB |
561 | /* See description in breakpoint.h. */ |
562 | int target_exact_watchpoints = 0; | |
563 | ||
c906108c | 564 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 565 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 566 | current breakpoint. */ |
c906108c | 567 | |
5c44784c | 568 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 569 | |
5c44784c JM |
570 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
571 | for (B = breakpoint_chain; \ | |
572 | B ? (TMP=B->next, 1): 0; \ | |
573 | B = TMP) | |
c906108c | 574 | |
4a64f543 MS |
575 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
576 | not provided so update_global_location_list must not be called | |
577 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 578 | |
876fa593 JK |
579 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
580 | for (BP_TMP = bp_location; \ | |
581 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
582 | BP_TMP++) | |
7cc221ef | 583 | |
b775012e LM |
584 | /* Iterates through locations with address ADDRESS for the currently selected |
585 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
586 | to where the loop should start from. | |
587 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
588 | appropriate location to start with. */ | |
589 | ||
590 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
591 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
592 | BP_LOCP_TMP = BP_LOCP_START; \ | |
593 | BP_LOCP_START \ | |
594 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
595 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
596 | BP_LOCP_TMP++) | |
597 | ||
1042e4c0 SS |
598 | /* Iterator for tracepoints only. */ |
599 | ||
600 | #define ALL_TRACEPOINTS(B) \ | |
601 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 602 | if (is_tracepoint (B)) |
1042e4c0 | 603 | |
7cc221ef | 604 | /* Chains of all breakpoints defined. */ |
c906108c SS |
605 | |
606 | struct breakpoint *breakpoint_chain; | |
607 | ||
876fa593 JK |
608 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
609 | ||
610 | static struct bp_location **bp_location; | |
611 | ||
612 | /* Number of elements of BP_LOCATION. */ | |
613 | ||
614 | static unsigned bp_location_count; | |
615 | ||
4a64f543 MS |
616 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
617 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
618 | result from bp_location_has_shadow. You can use it for roughly | |
619 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
620 | an address you need to read. */ | |
876fa593 JK |
621 | |
622 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
623 | ||
4a64f543 MS |
624 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
625 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
626 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
627 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
628 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
629 | |
630 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 631 | |
4a64f543 MS |
632 | /* The locations that no longer correspond to any breakpoint, unlinked |
633 | from bp_location array, but for which a hit may still be reported | |
634 | by a target. */ | |
20874c92 VP |
635 | VEC(bp_location_p) *moribund_locations = NULL; |
636 | ||
c906108c SS |
637 | /* Number of last breakpoint made. */ |
638 | ||
95a42b64 TT |
639 | static int breakpoint_count; |
640 | ||
86b17b60 PA |
641 | /* The value of `breakpoint_count' before the last command that |
642 | created breakpoints. If the last (break-like) command created more | |
643 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
644 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
645 | static int prev_breakpoint_count; | |
c906108c | 646 | |
1042e4c0 SS |
647 | /* Number of last tracepoint made. */ |
648 | ||
95a42b64 | 649 | static int tracepoint_count; |
1042e4c0 | 650 | |
6149aea9 PA |
651 | static struct cmd_list_element *breakpoint_set_cmdlist; |
652 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 653 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 654 | |
badd37ce SDJ |
655 | /* See declaration at breakpoint.h. */ |
656 | ||
657 | struct breakpoint * | |
658 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
659 | void *user_data) | |
660 | { | |
661 | struct breakpoint *b = NULL; | |
662 | ||
663 | ALL_BREAKPOINTS (b) | |
664 | { | |
665 | if (func (b, user_data) != 0) | |
666 | break; | |
667 | } | |
668 | ||
669 | return b; | |
670 | } | |
671 | ||
468d015d JJ |
672 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
673 | static int | |
674 | breakpoint_enabled (struct breakpoint *b) | |
675 | { | |
0d381245 | 676 | return (b->enable_state == bp_enabled); |
468d015d JJ |
677 | } |
678 | ||
c906108c SS |
679 | /* Set breakpoint count to NUM. */ |
680 | ||
95a42b64 | 681 | static void |
fba45db2 | 682 | set_breakpoint_count (int num) |
c906108c | 683 | { |
86b17b60 | 684 | prev_breakpoint_count = breakpoint_count; |
c906108c | 685 | breakpoint_count = num; |
4fa62494 | 686 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
687 | } |
688 | ||
86b17b60 PA |
689 | /* Used by `start_rbreak_breakpoints' below, to record the current |
690 | breakpoint count before "rbreak" creates any breakpoint. */ | |
691 | static int rbreak_start_breakpoint_count; | |
692 | ||
95a42b64 TT |
693 | /* Called at the start an "rbreak" command to record the first |
694 | breakpoint made. */ | |
86b17b60 | 695 | |
95a42b64 TT |
696 | void |
697 | start_rbreak_breakpoints (void) | |
698 | { | |
86b17b60 | 699 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
700 | } |
701 | ||
702 | /* Called at the end of an "rbreak" command to record the last | |
703 | breakpoint made. */ | |
86b17b60 | 704 | |
95a42b64 TT |
705 | void |
706 | end_rbreak_breakpoints (void) | |
707 | { | |
86b17b60 | 708 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
709 | } |
710 | ||
4a64f543 | 711 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
712 | |
713 | void | |
fba45db2 | 714 | clear_breakpoint_hit_counts (void) |
c906108c SS |
715 | { |
716 | struct breakpoint *b; | |
717 | ||
718 | ALL_BREAKPOINTS (b) | |
719 | b->hit_count = 0; | |
720 | } | |
721 | ||
9add0f1b TT |
722 | /* Allocate a new counted_command_line with reference count of 1. |
723 | The new structure owns COMMANDS. */ | |
724 | ||
725 | static struct counted_command_line * | |
726 | alloc_counted_command_line (struct command_line *commands) | |
727 | { | |
728 | struct counted_command_line *result | |
729 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 730 | |
9add0f1b TT |
731 | result->refc = 1; |
732 | result->commands = commands; | |
733 | return result; | |
734 | } | |
735 | ||
736 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
737 | ||
738 | static void | |
739 | incref_counted_command_line (struct counted_command_line *cmd) | |
740 | { | |
741 | if (cmd) | |
742 | ++cmd->refc; | |
743 | } | |
744 | ||
745 | /* Decrement reference count. If the reference count reaches 0, | |
746 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
747 | nothing if *CMDP is NULL. */ | |
748 | ||
749 | static void | |
750 | decref_counted_command_line (struct counted_command_line **cmdp) | |
751 | { | |
752 | if (*cmdp) | |
753 | { | |
754 | if (--(*cmdp)->refc == 0) | |
755 | { | |
756 | free_command_lines (&(*cmdp)->commands); | |
757 | xfree (*cmdp); | |
758 | } | |
759 | *cmdp = NULL; | |
760 | } | |
761 | } | |
762 | ||
763 | /* A cleanup function that calls decref_counted_command_line. */ | |
764 | ||
765 | static void | |
766 | do_cleanup_counted_command_line (void *arg) | |
767 | { | |
768 | decref_counted_command_line (arg); | |
769 | } | |
770 | ||
771 | /* Create a cleanup that calls decref_counted_command_line on the | |
772 | argument. */ | |
773 | ||
774 | static struct cleanup * | |
775 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
776 | { | |
777 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
778 | } | |
779 | ||
c906108c | 780 | \f |
48cb2d85 VP |
781 | /* Return the breakpoint with the specified number, or NULL |
782 | if the number does not refer to an existing breakpoint. */ | |
783 | ||
784 | struct breakpoint * | |
785 | get_breakpoint (int num) | |
786 | { | |
787 | struct breakpoint *b; | |
788 | ||
789 | ALL_BREAKPOINTS (b) | |
790 | if (b->number == num) | |
791 | return b; | |
792 | ||
793 | return NULL; | |
794 | } | |
5c44784c | 795 | |
c906108c | 796 | \f |
adc36818 | 797 | |
b775012e LM |
798 | /* Mark locations as "conditions have changed" in case the target supports |
799 | evaluating conditions on its side. */ | |
800 | ||
801 | static void | |
802 | mark_breakpoint_modified (struct breakpoint *b) | |
803 | { | |
804 | struct bp_location *loc; | |
805 | ||
806 | /* This is only meaningful if the target is | |
807 | evaluating conditions and if the user has | |
808 | opted for condition evaluation on the target's | |
809 | side. */ | |
810 | if (gdb_evaluates_breakpoint_condition_p () | |
811 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
812 | return; | |
813 | ||
814 | if (!is_breakpoint (b)) | |
815 | return; | |
816 | ||
817 | for (loc = b->loc; loc; loc = loc->next) | |
818 | loc->condition_changed = condition_modified; | |
819 | } | |
820 | ||
821 | /* Mark location as "conditions have changed" in case the target supports | |
822 | evaluating conditions on its side. */ | |
823 | ||
824 | static void | |
825 | mark_breakpoint_location_modified (struct bp_location *loc) | |
826 | { | |
827 | /* This is only meaningful if the target is | |
828 | evaluating conditions and if the user has | |
829 | opted for condition evaluation on the target's | |
830 | side. */ | |
831 | if (gdb_evaluates_breakpoint_condition_p () | |
832 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
833 | ||
834 | return; | |
835 | ||
836 | if (!is_breakpoint (loc->owner)) | |
837 | return; | |
838 | ||
839 | loc->condition_changed = condition_modified; | |
840 | } | |
841 | ||
842 | /* Sets the condition-evaluation mode using the static global | |
843 | condition_evaluation_mode. */ | |
844 | ||
845 | static void | |
846 | set_condition_evaluation_mode (char *args, int from_tty, | |
847 | struct cmd_list_element *c) | |
848 | { | |
b775012e LM |
849 | const char *old_mode, *new_mode; |
850 | ||
851 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
852 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
853 | { | |
854 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
855 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
856 | "Using host evaluation mode instead.")); | |
857 | return; | |
858 | } | |
859 | ||
860 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
861 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
862 | ||
abf1152a JK |
863 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
864 | settings was "auto". */ | |
865 | condition_evaluation_mode = condition_evaluation_mode_1; | |
866 | ||
b775012e LM |
867 | /* Only update the mode if the user picked a different one. */ |
868 | if (new_mode != old_mode) | |
869 | { | |
870 | struct bp_location *loc, **loc_tmp; | |
871 | /* If the user switched to a different evaluation mode, we | |
872 | need to synch the changes with the target as follows: | |
873 | ||
874 | "host" -> "target": Send all (valid) conditions to the target. | |
875 | "target" -> "host": Remove all the conditions from the target. | |
876 | */ | |
877 | ||
b775012e LM |
878 | if (new_mode == condition_evaluation_target) |
879 | { | |
880 | /* Mark everything modified and synch conditions with the | |
881 | target. */ | |
882 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
883 | mark_breakpoint_location_modified (loc); | |
884 | } | |
885 | else | |
886 | { | |
887 | /* Manually mark non-duplicate locations to synch conditions | |
888 | with the target. We do this to remove all the conditions the | |
889 | target knows about. */ | |
890 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
891 | if (is_breakpoint (loc->owner) && loc->inserted) | |
892 | loc->needs_update = 1; | |
893 | } | |
894 | ||
895 | /* Do the update. */ | |
44702360 | 896 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
897 | } |
898 | ||
899 | return; | |
900 | } | |
901 | ||
902 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
903 | what "auto" is translating to. */ | |
904 | ||
905 | static void | |
906 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
907 | struct cmd_list_element *c, const char *value) | |
908 | { | |
909 | if (condition_evaluation_mode == condition_evaluation_auto) | |
910 | fprintf_filtered (file, | |
911 | _("Breakpoint condition evaluation " | |
912 | "mode is %s (currently %s).\n"), | |
913 | value, | |
914 | breakpoint_condition_evaluation_mode ()); | |
915 | else | |
916 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
917 | value); | |
918 | } | |
919 | ||
920 | /* A comparison function for bp_location AP and BP that is used by | |
921 | bsearch. This comparison function only cares about addresses, unlike | |
922 | the more general bp_location_compare function. */ | |
923 | ||
924 | static int | |
925 | bp_location_compare_addrs (const void *ap, const void *bp) | |
926 | { | |
927 | struct bp_location *a = *(void **) ap; | |
928 | struct bp_location *b = *(void **) bp; | |
929 | ||
930 | if (a->address == b->address) | |
931 | return 0; | |
932 | else | |
933 | return ((a->address > b->address) - (a->address < b->address)); | |
934 | } | |
935 | ||
936 | /* Helper function to skip all bp_locations with addresses | |
937 | less than ADDRESS. It returns the first bp_location that | |
938 | is greater than or equal to ADDRESS. If none is found, just | |
939 | return NULL. */ | |
940 | ||
941 | static struct bp_location ** | |
942 | get_first_locp_gte_addr (CORE_ADDR address) | |
943 | { | |
944 | struct bp_location dummy_loc; | |
945 | struct bp_location *dummy_locp = &dummy_loc; | |
946 | struct bp_location **locp_found = NULL; | |
947 | ||
948 | /* Initialize the dummy location's address field. */ | |
949 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
950 | dummy_loc.address = address; | |
951 | ||
952 | /* Find a close match to the first location at ADDRESS. */ | |
953 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
954 | sizeof (struct bp_location **), | |
955 | bp_location_compare_addrs); | |
956 | ||
957 | /* Nothing was found, nothing left to do. */ | |
958 | if (locp_found == NULL) | |
959 | return NULL; | |
960 | ||
961 | /* We may have found a location that is at ADDRESS but is not the first in the | |
962 | location's list. Go backwards (if possible) and locate the first one. */ | |
963 | while ((locp_found - 1) >= bp_location | |
964 | && (*(locp_found - 1))->address == address) | |
965 | locp_found--; | |
966 | ||
967 | return locp_found; | |
968 | } | |
969 | ||
adc36818 | 970 | void |
7a26bd4d | 971 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
972 | int from_tty) |
973 | { | |
3a5c3e22 PA |
974 | xfree (b->cond_string); |
975 | b->cond_string = NULL; | |
adc36818 | 976 | |
3a5c3e22 | 977 | if (is_watchpoint (b)) |
adc36818 | 978 | { |
3a5c3e22 PA |
979 | struct watchpoint *w = (struct watchpoint *) b; |
980 | ||
981 | xfree (w->cond_exp); | |
982 | w->cond_exp = NULL; | |
983 | } | |
984 | else | |
985 | { | |
986 | struct bp_location *loc; | |
987 | ||
988 | for (loc = b->loc; loc; loc = loc->next) | |
989 | { | |
990 | xfree (loc->cond); | |
991 | loc->cond = NULL; | |
b775012e LM |
992 | |
993 | /* No need to free the condition agent expression | |
994 | bytecode (if we have one). We will handle this | |
995 | when we go through update_global_location_list. */ | |
3a5c3e22 | 996 | } |
adc36818 | 997 | } |
adc36818 PM |
998 | |
999 | if (*exp == 0) | |
1000 | { | |
1001 | if (from_tty) | |
1002 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
1003 | } | |
1004 | else | |
1005 | { | |
bbc13ae3 | 1006 | const char *arg = exp; |
cc59ec59 | 1007 | |
adc36818 PM |
1008 | /* I don't know if it matters whether this is the string the user |
1009 | typed in or the decompiled expression. */ | |
1010 | b->cond_string = xstrdup (arg); | |
1011 | b->condition_not_parsed = 0; | |
1012 | ||
1013 | if (is_watchpoint (b)) | |
1014 | { | |
3a5c3e22 PA |
1015 | struct watchpoint *w = (struct watchpoint *) b; |
1016 | ||
adc36818 PM |
1017 | innermost_block = NULL; |
1018 | arg = exp; | |
1bb9788d | 1019 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
1020 | if (*arg) |
1021 | error (_("Junk at end of expression")); | |
3a5c3e22 | 1022 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
1023 | } |
1024 | else | |
1025 | { | |
3a5c3e22 PA |
1026 | struct bp_location *loc; |
1027 | ||
adc36818 PM |
1028 | for (loc = b->loc; loc; loc = loc->next) |
1029 | { | |
1030 | arg = exp; | |
1031 | loc->cond = | |
1bb9788d TT |
1032 | parse_exp_1 (&arg, loc->address, |
1033 | block_for_pc (loc->address), 0); | |
adc36818 PM |
1034 | if (*arg) |
1035 | error (_("Junk at end of expression")); | |
1036 | } | |
1037 | } | |
1038 | } | |
b775012e LM |
1039 | mark_breakpoint_modified (b); |
1040 | ||
8d3788bd | 1041 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
1042 | } |
1043 | ||
d55637df TT |
1044 | /* Completion for the "condition" command. */ |
1045 | ||
1046 | static VEC (char_ptr) * | |
6f937416 PA |
1047 | condition_completer (struct cmd_list_element *cmd, |
1048 | const char *text, const char *word) | |
d55637df | 1049 | { |
6f937416 | 1050 | const char *space; |
d55637df | 1051 | |
6f937416 PA |
1052 | text = skip_spaces_const (text); |
1053 | space = skip_to_space_const (text); | |
d55637df TT |
1054 | if (*space == '\0') |
1055 | { | |
1056 | int len; | |
1057 | struct breakpoint *b; | |
1058 | VEC (char_ptr) *result = NULL; | |
1059 | ||
1060 | if (text[0] == '$') | |
1061 | { | |
1062 | /* We don't support completion of history indices. */ | |
1063 | if (isdigit (text[1])) | |
1064 | return NULL; | |
1065 | return complete_internalvar (&text[1]); | |
1066 | } | |
1067 | ||
1068 | /* We're completing the breakpoint number. */ | |
1069 | len = strlen (text); | |
1070 | ||
1071 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
1072 | { |
1073 | char number[50]; | |
1074 | ||
1075 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1076 | ||
1077 | if (strncmp (number, text, len) == 0) | |
1078 | VEC_safe_push (char_ptr, result, xstrdup (number)); | |
1079 | } | |
d55637df TT |
1080 | |
1081 | return result; | |
1082 | } | |
1083 | ||
1084 | /* We're completing the expression part. */ | |
6f937416 | 1085 | text = skip_spaces_const (space); |
d55637df TT |
1086 | return expression_completer (cmd, text, word); |
1087 | } | |
1088 | ||
c906108c SS |
1089 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1090 | ||
1091 | static void | |
fba45db2 | 1092 | condition_command (char *arg, int from_tty) |
c906108c | 1093 | { |
52f0bd74 | 1094 | struct breakpoint *b; |
c906108c | 1095 | char *p; |
52f0bd74 | 1096 | int bnum; |
c906108c SS |
1097 | |
1098 | if (arg == 0) | |
e2e0b3e5 | 1099 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1100 | |
1101 | p = arg; | |
1102 | bnum = get_number (&p); | |
5c44784c | 1103 | if (bnum == 0) |
8a3fe4f8 | 1104 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1105 | |
1106 | ALL_BREAKPOINTS (b) | |
1107 | if (b->number == bnum) | |
2f069f6f | 1108 | { |
6dddc817 DE |
1109 | /* Check if this breakpoint has a "stop" method implemented in an |
1110 | extension language. This method and conditions entered into GDB | |
1111 | from the CLI are mutually exclusive. */ | |
1112 | const struct extension_language_defn *extlang | |
1113 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1114 | ||
1115 | if (extlang != NULL) | |
1116 | { | |
1117 | error (_("Only one stop condition allowed. There is currently" | |
1118 | " a %s stop condition defined for this breakpoint."), | |
1119 | ext_lang_capitalized_name (extlang)); | |
1120 | } | |
2566ad2d | 1121 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1122 | |
1123 | if (is_breakpoint (b)) | |
44702360 | 1124 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1125 | |
2f069f6f JB |
1126 | return; |
1127 | } | |
c906108c | 1128 | |
8a3fe4f8 | 1129 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1130 | } |
1131 | ||
a7bdde9e VP |
1132 | /* Check that COMMAND do not contain commands that are suitable |
1133 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1134 | Throw if any such commands is found. */ |
1135 | ||
a7bdde9e VP |
1136 | static void |
1137 | check_no_tracepoint_commands (struct command_line *commands) | |
1138 | { | |
1139 | struct command_line *c; | |
cc59ec59 | 1140 | |
a7bdde9e VP |
1141 | for (c = commands; c; c = c->next) |
1142 | { | |
1143 | int i; | |
1144 | ||
1145 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1146 | error (_("The 'while-stepping' command can " |
1147 | "only be used for tracepoints")); | |
a7bdde9e VP |
1148 | |
1149 | for (i = 0; i < c->body_count; ++i) | |
1150 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1151 | ||
1152 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1153 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1154 | command directly. */ |
1155 | if (strstr (c->line, "collect ") == c->line) | |
1156 | error (_("The 'collect' command can only be used for tracepoints")); | |
1157 | ||
51661e93 VP |
1158 | if (strstr (c->line, "teval ") == c->line) |
1159 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1160 | } |
1161 | } | |
1162 | ||
d77f58be SS |
1163 | /* Encapsulate tests for different types of tracepoints. */ |
1164 | ||
d9b3f62e PA |
1165 | static int |
1166 | is_tracepoint_type (enum bptype type) | |
1167 | { | |
1168 | return (type == bp_tracepoint | |
1169 | || type == bp_fast_tracepoint | |
1170 | || type == bp_static_tracepoint); | |
1171 | } | |
1172 | ||
a7bdde9e | 1173 | int |
d77f58be | 1174 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1175 | { |
d9b3f62e | 1176 | return is_tracepoint_type (b->type); |
a7bdde9e | 1177 | } |
d9b3f62e | 1178 | |
e5dd4106 | 1179 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1180 | breakpoint. This function will throw an exception if a problem is |
1181 | found. */ | |
48cb2d85 | 1182 | |
95a42b64 TT |
1183 | static void |
1184 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1185 | struct command_line *commands) | |
48cb2d85 | 1186 | { |
d77f58be | 1187 | if (is_tracepoint (b)) |
a7bdde9e | 1188 | { |
c9a6ce02 | 1189 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1190 | struct command_line *c; |
1191 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1192 | |
1193 | /* Reset the while-stepping step count. The previous commands | |
1194 | might have included a while-stepping action, while the new | |
1195 | ones might not. */ | |
1196 | t->step_count = 0; | |
1197 | ||
1198 | /* We need to verify that each top-level element of commands is | |
1199 | valid for tracepoints, that there's at most one | |
1200 | while-stepping element, and that the while-stepping's body | |
1201 | has valid tracing commands excluding nested while-stepping. | |
1202 | We also need to validate the tracepoint action line in the | |
1203 | context of the tracepoint --- validate_actionline actually | |
1204 | has side effects, like setting the tracepoint's | |
1205 | while-stepping STEP_COUNT, in addition to checking if the | |
1206 | collect/teval actions parse and make sense in the | |
1207 | tracepoint's context. */ | |
a7bdde9e VP |
1208 | for (c = commands; c; c = c->next) |
1209 | { | |
a7bdde9e VP |
1210 | if (c->control_type == while_stepping_control) |
1211 | { | |
1212 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1213 | error (_("The 'while-stepping' command " |
1214 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1215 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1216 | error (_("The 'while-stepping' command " |
1217 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1218 | |
1219 | if (while_stepping) | |
3e43a32a MS |
1220 | error (_("The 'while-stepping' command " |
1221 | "can be used only once")); | |
a7bdde9e VP |
1222 | else |
1223 | while_stepping = c; | |
1224 | } | |
c9a6ce02 PA |
1225 | |
1226 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1227 | } |
1228 | if (while_stepping) | |
1229 | { | |
1230 | struct command_line *c2; | |
1231 | ||
1232 | gdb_assert (while_stepping->body_count == 1); | |
1233 | c2 = while_stepping->body_list[0]; | |
1234 | for (; c2; c2 = c2->next) | |
1235 | { | |
a7bdde9e VP |
1236 | if (c2->control_type == while_stepping_control) |
1237 | error (_("The 'while-stepping' command cannot be nested")); | |
1238 | } | |
1239 | } | |
1240 | } | |
1241 | else | |
1242 | { | |
1243 | check_no_tracepoint_commands (commands); | |
1244 | } | |
95a42b64 TT |
1245 | } |
1246 | ||
0fb4aa4b PA |
1247 | /* Return a vector of all the static tracepoints set at ADDR. The |
1248 | caller is responsible for releasing the vector. */ | |
1249 | ||
1250 | VEC(breakpoint_p) * | |
1251 | static_tracepoints_here (CORE_ADDR addr) | |
1252 | { | |
1253 | struct breakpoint *b; | |
1254 | VEC(breakpoint_p) *found = 0; | |
1255 | struct bp_location *loc; | |
1256 | ||
1257 | ALL_BREAKPOINTS (b) | |
1258 | if (b->type == bp_static_tracepoint) | |
1259 | { | |
1260 | for (loc = b->loc; loc; loc = loc->next) | |
1261 | if (loc->address == addr) | |
1262 | VEC_safe_push(breakpoint_p, found, b); | |
1263 | } | |
1264 | ||
1265 | return found; | |
1266 | } | |
1267 | ||
95a42b64 | 1268 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1269 | validate that only allowed commands are included. */ |
95a42b64 TT |
1270 | |
1271 | void | |
4a64f543 MS |
1272 | breakpoint_set_commands (struct breakpoint *b, |
1273 | struct command_line *commands) | |
95a42b64 TT |
1274 | { |
1275 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1276 | |
9add0f1b TT |
1277 | decref_counted_command_line (&b->commands); |
1278 | b->commands = alloc_counted_command_line (commands); | |
8d3788bd | 1279 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1280 | } |
1281 | ||
45a43567 TT |
1282 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1283 | is not the same as the "silent" that may appear in the breakpoint's | |
1284 | commands. */ | |
1285 | ||
1286 | void | |
1287 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1288 | { | |
1289 | int old_silent = b->silent; | |
1290 | ||
1291 | b->silent = silent; | |
1292 | if (old_silent != silent) | |
8d3788bd | 1293 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1294 | } |
1295 | ||
1296 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1297 | breakpoint work for any thread. */ | |
1298 | ||
1299 | void | |
1300 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1301 | { | |
1302 | int old_thread = b->thread; | |
1303 | ||
1304 | b->thread = thread; | |
1305 | if (old_thread != thread) | |
8d3788bd | 1306 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1307 | } |
1308 | ||
1309 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1310 | breakpoint work for any task. */ | |
1311 | ||
1312 | void | |
1313 | breakpoint_set_task (struct breakpoint *b, int task) | |
1314 | { | |
1315 | int old_task = b->task; | |
1316 | ||
1317 | b->task = task; | |
1318 | if (old_task != task) | |
8d3788bd | 1319 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1320 | } |
1321 | ||
95a42b64 TT |
1322 | void |
1323 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1324 | { |
1325 | struct breakpoint *b = closure; | |
cc59ec59 | 1326 | |
6f937416 | 1327 | validate_actionline (line, b); |
a7bdde9e VP |
1328 | } |
1329 | ||
95a42b64 TT |
1330 | /* A structure used to pass information through |
1331 | map_breakpoint_numbers. */ | |
1332 | ||
1333 | struct commands_info | |
1334 | { | |
1335 | /* True if the command was typed at a tty. */ | |
1336 | int from_tty; | |
86b17b60 PA |
1337 | |
1338 | /* The breakpoint range spec. */ | |
1339 | char *arg; | |
1340 | ||
95a42b64 TT |
1341 | /* Non-NULL if the body of the commands are being read from this |
1342 | already-parsed command. */ | |
1343 | struct command_line *control; | |
86b17b60 | 1344 | |
95a42b64 TT |
1345 | /* The command lines read from the user, or NULL if they have not |
1346 | yet been read. */ | |
1347 | struct counted_command_line *cmd; | |
1348 | }; | |
1349 | ||
1350 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1351 | commands_command. */ | |
1352 | ||
c906108c | 1353 | static void |
95a42b64 | 1354 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1355 | { |
95a42b64 | 1356 | struct commands_info *info = data; |
c906108c | 1357 | |
95a42b64 TT |
1358 | if (info->cmd == NULL) |
1359 | { | |
1360 | struct command_line *l; | |
5c44784c | 1361 | |
95a42b64 TT |
1362 | if (info->control != NULL) |
1363 | l = copy_command_lines (info->control->body_list[0]); | |
1364 | else | |
86b17b60 PA |
1365 | { |
1366 | struct cleanup *old_chain; | |
1367 | char *str; | |
c5aa993b | 1368 | |
3e43a32a MS |
1369 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1370 | "%s, one per line."), | |
86b17b60 PA |
1371 | info->arg); |
1372 | ||
1373 | old_chain = make_cleanup (xfree, str); | |
1374 | ||
1375 | l = read_command_lines (str, | |
1376 | info->from_tty, 1, | |
d77f58be | 1377 | (is_tracepoint (b) |
86b17b60 PA |
1378 | ? check_tracepoint_command : 0), |
1379 | b); | |
1380 | ||
1381 | do_cleanups (old_chain); | |
1382 | } | |
a7bdde9e | 1383 | |
95a42b64 TT |
1384 | info->cmd = alloc_counted_command_line (l); |
1385 | } | |
1386 | ||
1387 | /* If a breakpoint was on the list more than once, we don't need to | |
1388 | do anything. */ | |
1389 | if (b->commands != info->cmd) | |
1390 | { | |
1391 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1392 | incref_counted_command_line (info->cmd); | |
1393 | decref_counted_command_line (&b->commands); | |
1394 | b->commands = info->cmd; | |
8d3788bd | 1395 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1396 | } |
95a42b64 TT |
1397 | } |
1398 | ||
1399 | static void | |
4a64f543 MS |
1400 | commands_command_1 (char *arg, int from_tty, |
1401 | struct command_line *control) | |
95a42b64 TT |
1402 | { |
1403 | struct cleanup *cleanups; | |
1404 | struct commands_info info; | |
1405 | ||
1406 | info.from_tty = from_tty; | |
1407 | info.control = control; | |
1408 | info.cmd = NULL; | |
1409 | /* If we read command lines from the user, then `info' will hold an | |
1410 | extra reference to the commands that we must clean up. */ | |
1411 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1412 | ||
1413 | if (arg == NULL || !*arg) | |
1414 | { | |
86b17b60 | 1415 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1416 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1417 | breakpoint_count); | |
95a42b64 TT |
1418 | else if (breakpoint_count > 0) |
1419 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1420 | else |
1421 | { | |
1422 | /* So that we don't try to free the incoming non-NULL | |
1423 | argument in the cleanup below. Mapping breakpoint | |
1424 | numbers will fail in this case. */ | |
1425 | arg = NULL; | |
1426 | } | |
95a42b64 | 1427 | } |
9766ced4 SS |
1428 | else |
1429 | /* The command loop has some static state, so we need to preserve | |
1430 | our argument. */ | |
1431 | arg = xstrdup (arg); | |
86b17b60 PA |
1432 | |
1433 | if (arg != NULL) | |
1434 | make_cleanup (xfree, arg); | |
1435 | ||
1436 | info.arg = arg; | |
95a42b64 TT |
1437 | |
1438 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1439 | ||
1440 | if (info.cmd == NULL) | |
1441 | error (_("No breakpoints specified.")); | |
1442 | ||
1443 | do_cleanups (cleanups); | |
1444 | } | |
1445 | ||
1446 | static void | |
1447 | commands_command (char *arg, int from_tty) | |
1448 | { | |
1449 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1450 | } |
40c03ae8 EZ |
1451 | |
1452 | /* Like commands_command, but instead of reading the commands from | |
1453 | input stream, takes them from an already parsed command structure. | |
1454 | ||
1455 | This is used by cli-script.c to DTRT with breakpoint commands | |
1456 | that are part of if and while bodies. */ | |
1457 | enum command_control_type | |
1458 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1459 | { | |
95a42b64 TT |
1460 | commands_command_1 (arg, 0, cmd); |
1461 | return simple_control; | |
40c03ae8 | 1462 | } |
876fa593 JK |
1463 | |
1464 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1465 | ||
1466 | static int | |
1467 | bp_location_has_shadow (struct bp_location *bl) | |
1468 | { | |
1469 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1470 | return 0; | |
1471 | if (!bl->inserted) | |
1472 | return 0; | |
1473 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1474 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1475 | return 0; |
1476 | return 1; | |
1477 | } | |
1478 | ||
9d497a19 PA |
1479 | /* Update BUF, which is LEN bytes read from the target address |
1480 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1481 | contents. | |
1482 | ||
1483 | If READBUF is not NULL, this buffer must not overlap with the of | |
1484 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1485 | failed assertion internal error will be raised. */ | |
1486 | ||
1487 | static void | |
1488 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1489 | const gdb_byte *writebuf_org, | |
1490 | ULONGEST memaddr, LONGEST len, | |
1491 | struct bp_target_info *target_info, | |
1492 | struct gdbarch *gdbarch) | |
1493 | { | |
1494 | /* Now do full processing of the found relevant range of elements. */ | |
1495 | CORE_ADDR bp_addr = 0; | |
1496 | int bp_size = 0; | |
1497 | int bptoffset = 0; | |
1498 | ||
1499 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1500 | current_program_space->aspace, 0)) | |
1501 | { | |
1502 | /* The breakpoint is inserted in a different address space. */ | |
1503 | return; | |
1504 | } | |
1505 | ||
1506 | /* Addresses and length of the part of the breakpoint that | |
1507 | we need to copy. */ | |
1508 | bp_addr = target_info->placed_address; | |
1509 | bp_size = target_info->shadow_len; | |
1510 | ||
1511 | if (bp_addr + bp_size <= memaddr) | |
1512 | { | |
1513 | /* The breakpoint is entirely before the chunk of memory we are | |
1514 | reading. */ | |
1515 | return; | |
1516 | } | |
1517 | ||
1518 | if (bp_addr >= memaddr + len) | |
1519 | { | |
1520 | /* The breakpoint is entirely after the chunk of memory we are | |
1521 | reading. */ | |
1522 | return; | |
1523 | } | |
1524 | ||
1525 | /* Offset within shadow_contents. */ | |
1526 | if (bp_addr < memaddr) | |
1527 | { | |
1528 | /* Only copy the second part of the breakpoint. */ | |
1529 | bp_size -= memaddr - bp_addr; | |
1530 | bptoffset = memaddr - bp_addr; | |
1531 | bp_addr = memaddr; | |
1532 | } | |
1533 | ||
1534 | if (bp_addr + bp_size > memaddr + len) | |
1535 | { | |
1536 | /* Only copy the first part of the breakpoint. */ | |
1537 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1538 | } | |
1539 | ||
1540 | if (readbuf != NULL) | |
1541 | { | |
1542 | /* Verify that the readbuf buffer does not overlap with the | |
1543 | shadow_contents buffer. */ | |
1544 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1545 | || readbuf >= (target_info->shadow_contents | |
1546 | + target_info->shadow_len)); | |
1547 | ||
1548 | /* Update the read buffer with this inserted breakpoint's | |
1549 | shadow. */ | |
1550 | memcpy (readbuf + bp_addr - memaddr, | |
1551 | target_info->shadow_contents + bptoffset, bp_size); | |
1552 | } | |
1553 | else | |
1554 | { | |
1555 | const unsigned char *bp; | |
0d5ed153 MR |
1556 | CORE_ADDR addr = target_info->reqstd_address; |
1557 | int placed_size; | |
9d497a19 PA |
1558 | |
1559 | /* Update the shadow with what we want to write to memory. */ | |
1560 | memcpy (target_info->shadow_contents + bptoffset, | |
1561 | writebuf_org + bp_addr - memaddr, bp_size); | |
1562 | ||
1563 | /* Determine appropriate breakpoint contents and size for this | |
1564 | address. */ | |
0d5ed153 | 1565 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1566 | |
1567 | /* Update the final write buffer with this inserted | |
1568 | breakpoint's INSN. */ | |
1569 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1570 | } | |
1571 | } | |
1572 | ||
8defab1a | 1573 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1574 | by replacing any memory breakpoints with their shadowed contents. |
1575 | ||
35c63cd8 JB |
1576 | If READBUF is not NULL, this buffer must not overlap with any of |
1577 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1578 | a failed assertion internal error will be raised. | |
1579 | ||
876fa593 | 1580 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1581 | bl->address - bp_location_placed_address_before_address_max |
1582 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1583 | The range we were requested to resolve shadows for is: |
1584 | memaddr ... memaddr + len | |
1585 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1586 | memaddr + len <= (bl->address |
1587 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1588 | and: |
35df4500 | 1589 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1590 | |
8defab1a | 1591 | void |
f0ba3972 PA |
1592 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1593 | const gdb_byte *writebuf_org, | |
1594 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1595 | { |
4a64f543 MS |
1596 | /* Left boundary, right boundary and median element of our binary |
1597 | search. */ | |
876fa593 | 1598 | unsigned bc_l, bc_r, bc; |
9d497a19 | 1599 | size_t i; |
876fa593 | 1600 | |
4a64f543 MS |
1601 | /* Find BC_L which is a leftmost element which may affect BUF |
1602 | content. It is safe to report lower value but a failure to | |
1603 | report higher one. */ | |
876fa593 JK |
1604 | |
1605 | bc_l = 0; | |
1606 | bc_r = bp_location_count; | |
1607 | while (bc_l + 1 < bc_r) | |
1608 | { | |
35df4500 | 1609 | struct bp_location *bl; |
876fa593 JK |
1610 | |
1611 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1612 | bl = bp_location[bc]; |
876fa593 | 1613 | |
4a64f543 MS |
1614 | /* Check first BL->ADDRESS will not overflow due to the added |
1615 | constant. Then advance the left boundary only if we are sure | |
1616 | the BC element can in no way affect the BUF content (MEMADDR | |
1617 | to MEMADDR + LEN range). | |
876fa593 | 1618 | |
4a64f543 MS |
1619 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1620 | offset so that we cannot miss a breakpoint with its shadow | |
1621 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1622 | |
35df4500 TJB |
1623 | if ((bl->address + bp_location_shadow_len_after_address_max |
1624 | >= bl->address) | |
1625 | && (bl->address + bp_location_shadow_len_after_address_max | |
1626 | <= memaddr)) | |
876fa593 JK |
1627 | bc_l = bc; |
1628 | else | |
1629 | bc_r = bc; | |
1630 | } | |
1631 | ||
128070bb PA |
1632 | /* Due to the binary search above, we need to make sure we pick the |
1633 | first location that's at BC_L's address. E.g., if there are | |
1634 | multiple locations at the same address, BC_L may end up pointing | |
1635 | at a duplicate location, and miss the "master"/"inserted" | |
1636 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1637 | B: | |
1638 | ||
1639 | L1@A, L2@A, L3@B, ... | |
1640 | ||
1641 | BC_L could end up pointing at location L2, while the "master" | |
1642 | location could be L1. Since the `loc->inserted' flag is only set | |
1643 | on "master" locations, we'd forget to restore the shadow of L1 | |
1644 | and L2. */ | |
1645 | while (bc_l > 0 | |
1646 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1647 | bc_l--; | |
1648 | ||
876fa593 JK |
1649 | /* Now do full processing of the found relevant range of elements. */ |
1650 | ||
1651 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1652 | { |
35df4500 | 1653 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1654 | CORE_ADDR bp_addr = 0; |
1655 | int bp_size = 0; | |
1656 | int bptoffset = 0; | |
1657 | ||
35df4500 TJB |
1658 | /* bp_location array has BL->OWNER always non-NULL. */ |
1659 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1660 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1661 | bl->owner->number); |
ffce0d52 | 1662 | |
e5dd4106 | 1663 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1664 | content. */ |
1665 | ||
35df4500 TJB |
1666 | if (bl->address >= bp_location_placed_address_before_address_max |
1667 | && memaddr + len <= (bl->address | |
1668 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1669 | break; |
1670 | ||
35df4500 | 1671 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1672 | continue; |
6c95b8df | 1673 | |
9d497a19 PA |
1674 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1675 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1676 | } | |
c906108c | 1677 | } |
9d497a19 | 1678 | |
c906108c | 1679 | \f |
c5aa993b | 1680 | |
b775012e LM |
1681 | /* Return true if BPT is either a software breakpoint or a hardware |
1682 | breakpoint. */ | |
1683 | ||
1684 | int | |
1685 | is_breakpoint (const struct breakpoint *bpt) | |
1686 | { | |
1687 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1688 | || bpt->type == bp_hardware_breakpoint |
1689 | || bpt->type == bp_dprintf); | |
b775012e LM |
1690 | } |
1691 | ||
60e1c644 PA |
1692 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1693 | ||
a5606eee | 1694 | static int |
d77f58be | 1695 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1696 | { |
1697 | return (bpt->type == bp_hardware_watchpoint | |
1698 | || bpt->type == bp_read_watchpoint | |
1699 | || bpt->type == bp_access_watchpoint); | |
1700 | } | |
7270d8f2 | 1701 | |
60e1c644 PA |
1702 | /* Return true if BPT is of any watchpoint kind, hardware or |
1703 | software. */ | |
1704 | ||
3a5c3e22 | 1705 | int |
d77f58be | 1706 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1707 | { |
1708 | return (is_hardware_watchpoint (bpt) | |
1709 | || bpt->type == bp_watchpoint); | |
1710 | } | |
1711 | ||
3a5c3e22 PA |
1712 | /* Returns true if the current thread and its running state are safe |
1713 | to evaluate or update watchpoint B. Watchpoints on local | |
1714 | expressions need to be evaluated in the context of the thread that | |
1715 | was current when the watchpoint was created, and, that thread needs | |
1716 | to be stopped to be able to select the correct frame context. | |
1717 | Watchpoints on global expressions can be evaluated on any thread, | |
1718 | and in any state. It is presently left to the target allowing | |
1719 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1720 | |
1721 | static int | |
3a5c3e22 | 1722 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1723 | { |
d0d8b0c6 JK |
1724 | return (b->base.pspace == current_program_space |
1725 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1726 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1727 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1728 | } |
1729 | ||
d0fb5eae JK |
1730 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1731 | associated bp_watchpoint_scope breakpoint. */ | |
1732 | ||
1733 | static void | |
3a5c3e22 | 1734 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1735 | { |
3a5c3e22 | 1736 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1737 | |
1738 | if (b->related_breakpoint != b) | |
1739 | { | |
1740 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1741 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1742 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1743 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1744 | b->related_breakpoint = b; | |
1745 | } | |
1746 | b->disposition = disp_del_at_next_stop; | |
1747 | } | |
1748 | ||
bb9d5f81 PP |
1749 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1750 | watchpoint W. */ | |
1751 | ||
1752 | static struct value * | |
1753 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1754 | { | |
1755 | struct value *bit_val; | |
1756 | ||
1757 | if (val == NULL) | |
1758 | return NULL; | |
1759 | ||
1760 | bit_val = allocate_value (value_type (val)); | |
1761 | ||
1762 | unpack_value_bitfield (bit_val, | |
1763 | w->val_bitpos, | |
1764 | w->val_bitsize, | |
1765 | value_contents_for_printing (val), | |
1766 | value_offset (val), | |
1767 | val); | |
1768 | ||
1769 | return bit_val; | |
1770 | } | |
1771 | ||
567e1b4e JB |
1772 | /* Assuming that B is a watchpoint: |
1773 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1774 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1775 | - Evaluate the condition if there is one, and store the result |
1776 | in b->loc->cond. | |
a5606eee VP |
1777 | - Update the list of values that must be watched in B->loc. |
1778 | ||
4a64f543 MS |
1779 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1780 | nothing. If this is local watchpoint that is out of scope, delete | |
1781 | it. | |
1782 | ||
1783 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1784 | removed + inserted on each stop here. Normal breakpoints must | |
1785 | never be removed because they might be missed by a running thread | |
1786 | when debugging in non-stop mode. On the other hand, hardware | |
1787 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1788 | to each LWP since they are stored in each LWP's hardware debug | |
1789 | registers. Therefore, such LWP must be stopped first in order to | |
1790 | be able to modify its hardware watchpoints. | |
1791 | ||
1792 | Hardware watchpoints must be reset exactly once after being | |
1793 | presented to the user. It cannot be done sooner, because it would | |
1794 | reset the data used to present the watchpoint hit to the user. And | |
1795 | it must not be done later because it could display the same single | |
1796 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1797 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1798 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1799 | not user-visible - its hit is suppressed if the memory content has | |
1800 | not changed. | |
1801 | ||
1802 | The following constraints influence the location where we can reset | |
1803 | hardware watchpoints: | |
1804 | ||
1805 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1806 | called several times when GDB stops. | |
1807 | ||
1808 | [linux] | |
1809 | * Multiple hardware watchpoints can be hit at the same time, | |
1810 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1811 | hit at a time as the reason for stopping, and all the other hits | |
1812 | are presented later, one after the other, each time the user | |
1813 | requests the execution to be resumed. Execution is not resumed | |
1814 | for the threads still having pending hit event stored in | |
1815 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1816 | the inferior on the first stop the thread hit event is kept being | |
1817 | reported from its cached value by linux_nat_stopped_data_address | |
1818 | until the real thread resume happens after the watchpoint gets | |
1819 | presented and thus its LWP_INFO->STATUS gets reset. | |
1820 | ||
1821 | Therefore the hardware watchpoint hit can get safely reset on the | |
1822 | watchpoint removal from inferior. */ | |
a79d3c27 | 1823 | |
b40ce68a | 1824 | static void |
3a5c3e22 | 1825 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1826 | { |
a5606eee | 1827 | int within_current_scope; |
a5606eee | 1828 | struct frame_id saved_frame_id; |
66076460 | 1829 | int frame_saved; |
a5606eee | 1830 | |
f6bc2008 PA |
1831 | /* If this is a local watchpoint, we only want to check if the |
1832 | watchpoint frame is in scope if the current thread is the thread | |
1833 | that was used to create the watchpoint. */ | |
1834 | if (!watchpoint_in_thread_scope (b)) | |
1835 | return; | |
1836 | ||
3a5c3e22 | 1837 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1838 | return; |
1839 | ||
66076460 | 1840 | frame_saved = 0; |
a5606eee VP |
1841 | |
1842 | /* Determine if the watchpoint is within scope. */ | |
1843 | if (b->exp_valid_block == NULL) | |
1844 | within_current_scope = 1; | |
1845 | else | |
1846 | { | |
b5db5dfc UW |
1847 | struct frame_info *fi = get_current_frame (); |
1848 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1849 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1850 | ||
c9cf6e20 MG |
1851 | /* If we're at a point where the stack has been destroyed |
1852 | (e.g. in a function epilogue), unwinding may not work | |
1853 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1854 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1855 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1856 | return; |
66076460 DJ |
1857 | |
1858 | /* Save the current frame's ID so we can restore it after | |
1859 | evaluating the watchpoint expression on its own frame. */ | |
1860 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1861 | took a frame parameter, so that we didn't have to change the | |
1862 | selected frame. */ | |
1863 | frame_saved = 1; | |
1864 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1865 | ||
a5606eee VP |
1866 | fi = frame_find_by_id (b->watchpoint_frame); |
1867 | within_current_scope = (fi != NULL); | |
1868 | if (within_current_scope) | |
1869 | select_frame (fi); | |
1870 | } | |
1871 | ||
b5db5dfc UW |
1872 | /* We don't free locations. They are stored in the bp_location array |
1873 | and update_global_location_list will eventually delete them and | |
1874 | remove breakpoints if needed. */ | |
3a5c3e22 | 1875 | b->base.loc = NULL; |
b5db5dfc | 1876 | |
a5606eee VP |
1877 | if (within_current_scope && reparse) |
1878 | { | |
bbc13ae3 | 1879 | const char *s; |
d63d0675 | 1880 | |
a5606eee VP |
1881 | if (b->exp) |
1882 | { | |
1883 | xfree (b->exp); | |
1884 | b->exp = NULL; | |
1885 | } | |
d63d0675 | 1886 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1887 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1888 | /* If the meaning of expression itself changed, the old value is |
1889 | no longer relevant. We don't want to report a watchpoint hit | |
1890 | to the user when the old value and the new value may actually | |
1891 | be completely different objects. */ | |
1892 | value_free (b->val); | |
fa4727a6 DJ |
1893 | b->val = NULL; |
1894 | b->val_valid = 0; | |
60e1c644 PA |
1895 | |
1896 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1897 | expression is stored in the breakpoint object, not in the | |
1898 | locations (re)created below. */ | |
3a5c3e22 | 1899 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1900 | { |
1901 | if (b->cond_exp != NULL) | |
1902 | { | |
1903 | xfree (b->cond_exp); | |
1904 | b->cond_exp = NULL; | |
1905 | } | |
1906 | ||
3a5c3e22 | 1907 | s = b->base.cond_string; |
1bb9788d | 1908 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1909 | } |
a5606eee | 1910 | } |
a5606eee VP |
1911 | |
1912 | /* If we failed to parse the expression, for example because | |
1913 | it refers to a global variable in a not-yet-loaded shared library, | |
1914 | don't try to insert watchpoint. We don't automatically delete | |
1915 | such watchpoint, though, since failure to parse expression | |
1916 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1917 | if (!target_has_execution) |
2d134ed3 PA |
1918 | { |
1919 | /* Without execution, memory can't change. No use to try and | |
1920 | set watchpoint locations. The watchpoint will be reset when | |
1921 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1922 | if (!can_use_hw_watchpoints) |
1923 | { | |
1924 | if (b->base.ops->works_in_software_mode (&b->base)) | |
1925 | b->base.type = bp_watchpoint; | |
1926 | else | |
638aa5a1 AB |
1927 | error (_("Can't set read/access watchpoint when " |
1928 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1929 | } |
2d134ed3 PA |
1930 | } |
1931 | else if (within_current_scope && b->exp) | |
a5606eee | 1932 | { |
0cf6dd15 | 1933 | int pc = 0; |
fa4727a6 | 1934 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1935 | struct program_space *frame_pspace; |
a5606eee | 1936 | |
3a1115a0 | 1937 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain, 0); |
a5606eee | 1938 | |
a5606eee VP |
1939 | /* Avoid setting b->val if it's already set. The meaning of |
1940 | b->val is 'the last value' user saw, and we should update | |
1941 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1942 | happens, the code that reports it updates b->val directly. |
1943 | We don't keep track of the memory value for masked | |
1944 | watchpoints. */ | |
3a5c3e22 | 1945 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 | 1946 | { |
bb9d5f81 PP |
1947 | if (b->val_bitsize != 0) |
1948 | { | |
1949 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1950 | if (v != NULL) | |
1951 | release_value (v); | |
1952 | } | |
fa4727a6 DJ |
1953 | b->val = v; |
1954 | b->val_valid = 1; | |
1955 | } | |
a5606eee | 1956 | |
2d134ed3 PA |
1957 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1958 | ||
a5606eee | 1959 | /* Look at each value on the value chain. */ |
9fa40276 | 1960 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1961 | { |
1962 | /* If it's a memory location, and GDB actually needed | |
1963 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1964 | must watch it. If the first value returned is |
1965 | still lazy, that means an error occurred reading it; | |
1966 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1967 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1968 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1969 | { |
1970 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1971 | |
a5606eee VP |
1972 | /* We only watch structs and arrays if user asked |
1973 | for it explicitly, never if they just happen to | |
1974 | appear in the middle of some value chain. */ | |
fa4727a6 | 1975 | if (v == result |
a5606eee VP |
1976 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1977 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1978 | { | |
1979 | CORE_ADDR addr; | |
f486487f | 1980 | enum target_hw_bp_type type; |
a5606eee | 1981 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1982 | int bitpos = 0, bitsize = 0; |
1983 | ||
1984 | if (value_bitsize (v) != 0) | |
1985 | { | |
1986 | /* Extract the bit parameters out from the bitfield | |
1987 | sub-expression. */ | |
1988 | bitpos = value_bitpos (v); | |
1989 | bitsize = value_bitsize (v); | |
1990 | } | |
1991 | else if (v == result && b->val_bitsize != 0) | |
1992 | { | |
1993 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1994 | lvalue whose bit parameters are saved in the fields | |
1995 | VAL_BITPOS and VAL_BITSIZE. */ | |
1996 | bitpos = b->val_bitpos; | |
1997 | bitsize = b->val_bitsize; | |
1998 | } | |
a5606eee | 1999 | |
42ae5230 | 2000 | addr = value_address (v); |
bb9d5f81 PP |
2001 | if (bitsize != 0) |
2002 | { | |
2003 | /* Skip the bytes that don't contain the bitfield. */ | |
2004 | addr += bitpos / 8; | |
2005 | } | |
2006 | ||
a5606eee | 2007 | type = hw_write; |
3a5c3e22 | 2008 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 2009 | type = hw_read; |
3a5c3e22 | 2010 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 2011 | type = hw_access; |
3a5c3e22 PA |
2012 | |
2013 | loc = allocate_bp_location (&b->base); | |
2014 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
2015 | ; |
2016 | *tmp = loc; | |
a6d9a66e | 2017 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
2018 | |
2019 | loc->pspace = frame_pspace; | |
a5606eee | 2020 | loc->address = addr; |
bb9d5f81 PP |
2021 | |
2022 | if (bitsize != 0) | |
2023 | { | |
2024 | /* Just cover the bytes that make up the bitfield. */ | |
2025 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2026 | } | |
2027 | else | |
2028 | loc->length = TYPE_LENGTH (value_type (v)); | |
2029 | ||
a5606eee VP |
2030 | loc->watchpoint_type = type; |
2031 | } | |
2032 | } | |
9fa40276 TJB |
2033 | } |
2034 | ||
2035 | /* Change the type of breakpoint between hardware assisted or | |
2036 | an ordinary watchpoint depending on the hardware support | |
2037 | and free hardware slots. REPARSE is set when the inferior | |
2038 | is started. */ | |
a9634178 | 2039 | if (reparse) |
9fa40276 | 2040 | { |
e09342b5 | 2041 | int reg_cnt; |
9fa40276 TJB |
2042 | enum bp_loc_type loc_type; |
2043 | struct bp_location *bl; | |
a5606eee | 2044 | |
a9634178 | 2045 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2046 | |
2047 | if (reg_cnt) | |
9fa40276 TJB |
2048 | { |
2049 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2050 | enum bptype type; |
9fa40276 | 2051 | |
a9634178 TJB |
2052 | /* Use an exact watchpoint when there's only one memory region to be |
2053 | watched, and only one debug register is needed to watch it. */ | |
2054 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2055 | ||
9fa40276 | 2056 | /* We need to determine how many resources are already |
e09342b5 TJB |
2057 | used for all other hardware watchpoints plus this one |
2058 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2059 | this watchpoint in as well. */ |
2060 | ||
2061 | /* If this is a software watchpoint, we try to turn it | |
2062 | to a hardware one -- count resources as if B was of | |
2063 | hardware watchpoint type. */ | |
2064 | type = b->base.type; | |
2065 | if (type == bp_watchpoint) | |
2066 | type = bp_hardware_watchpoint; | |
2067 | ||
2068 | /* This watchpoint may or may not have been placed on | |
2069 | the list yet at this point (it won't be in the list | |
2070 | if we're trying to create it for the first time, | |
2071 | through watch_command), so always account for it | |
2072 | manually. */ | |
2073 | ||
2074 | /* Count resources used by all watchpoints except B. */ | |
2075 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
2076 | ||
2077 | /* Add in the resources needed for B. */ | |
2078 | i += hw_watchpoint_use_count (&b->base); | |
2079 | ||
2080 | target_resources_ok | |
2081 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2082 | if (target_resources_ok <= 0) |
a9634178 | 2083 | { |
3a5c3e22 | 2084 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
2085 | |
2086 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2087 | error (_("Target does not support this type of " |
2088 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2089 | else if (target_resources_ok < 0 && !sw_mode) |
2090 | error (_("There are not enough available hardware " | |
2091 | "resources for this watchpoint.")); | |
a1398e0c PA |
2092 | |
2093 | /* Downgrade to software watchpoint. */ | |
2094 | b->base.type = bp_watchpoint; | |
2095 | } | |
2096 | else | |
2097 | { | |
2098 | /* If this was a software watchpoint, we've just | |
2099 | found we have enough resources to turn it to a | |
2100 | hardware watchpoint. Otherwise, this is a | |
2101 | nop. */ | |
2102 | b->base.type = type; | |
a9634178 | 2103 | } |
9fa40276 | 2104 | } |
3a5c3e22 | 2105 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
638aa5a1 AB |
2106 | { |
2107 | if (!can_use_hw_watchpoints) | |
2108 | error (_("Can't set read/access watchpoint when " | |
2109 | "hardware watchpoints are disabled.")); | |
2110 | else | |
2111 | error (_("Expression cannot be implemented with " | |
2112 | "read/access watchpoint.")); | |
2113 | } | |
9fa40276 | 2114 | else |
3a5c3e22 | 2115 | b->base.type = bp_watchpoint; |
9fa40276 | 2116 | |
3a5c3e22 | 2117 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 2118 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 2119 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
2120 | bl->loc_type = loc_type; |
2121 | } | |
2122 | ||
2123 | for (v = val_chain; v; v = next) | |
2124 | { | |
a5606eee VP |
2125 | next = value_next (v); |
2126 | if (v != b->val) | |
2127 | value_free (v); | |
2128 | } | |
2129 | ||
c7437ca6 PA |
2130 | /* If a software watchpoint is not watching any memory, then the |
2131 | above left it without any location set up. But, | |
2132 | bpstat_stop_status requires a location to be able to report | |
2133 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 2134 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 2135 | { |
3a5c3e22 PA |
2136 | struct breakpoint *base = &b->base; |
2137 | base->loc = allocate_bp_location (base); | |
2138 | base->loc->pspace = frame_pspace; | |
2139 | base->loc->address = -1; | |
2140 | base->loc->length = -1; | |
2141 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 2142 | } |
a5606eee VP |
2143 | } |
2144 | else if (!within_current_scope) | |
7270d8f2 | 2145 | { |
ac74f770 MS |
2146 | printf_filtered (_("\ |
2147 | Watchpoint %d deleted because the program has left the block\n\ | |
2148 | in which its expression is valid.\n"), | |
3a5c3e22 | 2149 | b->base.number); |
d0fb5eae | 2150 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2151 | } |
a5606eee VP |
2152 | |
2153 | /* Restore the selected frame. */ | |
66076460 DJ |
2154 | if (frame_saved) |
2155 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2156 | } |
2157 | ||
a5606eee | 2158 | |
74960c60 | 2159 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2160 | inserted in the inferior. We don't differentiate the type of BL's owner |
2161 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2162 | breakpoint_ops is not defined, because in insert_bp_location, | |
2163 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2164 | static int |
35df4500 | 2165 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2166 | { |
35df4500 | 2167 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2168 | return 0; |
2169 | ||
35df4500 | 2170 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2171 | return 0; |
2172 | ||
35df4500 | 2173 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2174 | return 0; |
2175 | ||
f8eba3c6 TT |
2176 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2177 | return 0; | |
2178 | ||
56710373 PA |
2179 | /* This is set for example, when we're attached to the parent of a |
2180 | vfork, and have detached from the child. The child is running | |
2181 | free, and we expect it to do an exec or exit, at which point the | |
2182 | OS makes the parent schedulable again (and the target reports | |
2183 | that the vfork is done). Until the child is done with the shared | |
2184 | memory region, do not insert breakpoints in the parent, otherwise | |
2185 | the child could still trip on the parent's breakpoints. Since | |
2186 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2187 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2188 | return 0; |
2189 | ||
31e77af2 PA |
2190 | /* Don't insert a breakpoint if we're trying to step past its |
2191 | location. */ | |
2192 | if ((bl->loc_type == bp_loc_software_breakpoint | |
2193 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2194 | && stepping_past_instruction_at (bl->pspace->aspace, | |
2195 | bl->address)) | |
e558d7c1 PA |
2196 | { |
2197 | if (debug_infrun) | |
2198 | { | |
2199 | fprintf_unfiltered (gdb_stdlog, | |
2200 | "infrun: skipping breakpoint: " | |
2201 | "stepping past insn at: %s\n", | |
2202 | paddress (bl->gdbarch, bl->address)); | |
2203 | } | |
2204 | return 0; | |
2205 | } | |
31e77af2 | 2206 | |
963f9c80 PA |
2207 | /* Don't insert watchpoints if we're trying to step past the |
2208 | instruction that triggered one. */ | |
2209 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2210 | && stepping_past_nonsteppable_watchpoint ()) | |
2211 | { | |
2212 | if (debug_infrun) | |
2213 | { | |
2214 | fprintf_unfiltered (gdb_stdlog, | |
2215 | "infrun: stepping past non-steppable watchpoint. " | |
2216 | "skipping watchpoint at %s:%d\n", | |
2217 | paddress (bl->gdbarch, bl->address), | |
2218 | bl->length); | |
2219 | } | |
2220 | return 0; | |
2221 | } | |
2222 | ||
74960c60 VP |
2223 | return 1; |
2224 | } | |
2225 | ||
934709f0 PW |
2226 | /* Same as should_be_inserted but does the check assuming |
2227 | that the location is not duplicated. */ | |
2228 | ||
2229 | static int | |
2230 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2231 | { | |
2232 | int result; | |
2233 | const int save_duplicate = bl->duplicate; | |
2234 | ||
2235 | bl->duplicate = 0; | |
2236 | result = should_be_inserted (bl); | |
2237 | bl->duplicate = save_duplicate; | |
2238 | return result; | |
2239 | } | |
2240 | ||
b775012e LM |
2241 | /* Parses a conditional described by an expression COND into an |
2242 | agent expression bytecode suitable for evaluation | |
2243 | by the bytecode interpreter. Return NULL if there was | |
2244 | any error during parsing. */ | |
2245 | ||
2246 | static struct agent_expr * | |
2247 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2248 | { | |
2249 | struct agent_expr *aexpr = NULL; | |
b775012e LM |
2250 | |
2251 | if (!cond) | |
2252 | return NULL; | |
2253 | ||
2254 | /* We don't want to stop processing, so catch any errors | |
2255 | that may show up. */ | |
492d29ea | 2256 | TRY |
b775012e LM |
2257 | { |
2258 | aexpr = gen_eval_for_expr (scope, cond); | |
2259 | } | |
2260 | ||
492d29ea | 2261 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2262 | { |
2263 | /* If we got here, it means the condition could not be parsed to a valid | |
2264 | bytecode expression and thus can't be evaluated on the target's side. | |
2265 | It's no use iterating through the conditions. */ | |
2266 | return NULL; | |
2267 | } | |
492d29ea | 2268 | END_CATCH |
b775012e LM |
2269 | |
2270 | /* We have a valid agent expression. */ | |
2271 | return aexpr; | |
2272 | } | |
2273 | ||
2274 | /* Based on location BL, create a list of breakpoint conditions to be | |
2275 | passed on to the target. If we have duplicated locations with different | |
2276 | conditions, we will add such conditions to the list. The idea is that the | |
2277 | target will evaluate the list of conditions and will only notify GDB when | |
2278 | one of them is true. */ | |
2279 | ||
2280 | static void | |
2281 | build_target_condition_list (struct bp_location *bl) | |
2282 | { | |
2283 | struct bp_location **locp = NULL, **loc2p; | |
2284 | int null_condition_or_parse_error = 0; | |
2285 | int modified = bl->needs_update; | |
2286 | struct bp_location *loc; | |
2287 | ||
8b4f3082 PA |
2288 | /* Release conditions left over from a previous insert. */ |
2289 | VEC_free (agent_expr_p, bl->target_info.conditions); | |
2290 | ||
b775012e LM |
2291 | /* This is only meaningful if the target is |
2292 | evaluating conditions and if the user has | |
2293 | opted for condition evaluation on the target's | |
2294 | side. */ | |
2295 | if (gdb_evaluates_breakpoint_condition_p () | |
2296 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2297 | return; | |
2298 | ||
2299 | /* Do a first pass to check for locations with no assigned | |
2300 | conditions or conditions that fail to parse to a valid agent expression | |
2301 | bytecode. If any of these happen, then it's no use to send conditions | |
2302 | to the target since this location will always trigger and generate a | |
2303 | response back to GDB. */ | |
2304 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2305 | { | |
2306 | loc = (*loc2p); | |
2307 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2308 | { | |
2309 | if (modified) | |
2310 | { | |
2311 | struct agent_expr *aexpr; | |
2312 | ||
2313 | /* Re-parse the conditions since something changed. In that | |
2314 | case we already freed the condition bytecodes (see | |
2315 | force_breakpoint_reinsertion). We just | |
2316 | need to parse the condition to bytecodes again. */ | |
2317 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2318 | loc->cond_bytecode = aexpr; | |
2319 | ||
2320 | /* Check if we managed to parse the conditional expression | |
2321 | correctly. If not, we will not send this condition | |
2322 | to the target. */ | |
2323 | if (aexpr) | |
2324 | continue; | |
2325 | } | |
2326 | ||
2327 | /* If we have a NULL bytecode expression, it means something | |
2328 | went wrong or we have a null condition expression. */ | |
2329 | if (!loc->cond_bytecode) | |
2330 | { | |
2331 | null_condition_or_parse_error = 1; | |
2332 | break; | |
2333 | } | |
2334 | } | |
2335 | } | |
2336 | ||
2337 | /* If any of these happened, it means we will have to evaluate the conditions | |
2338 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2339 | for all the other duplicate locations, thus we free all of them here. | |
2340 | ||
2341 | This is so we have a finer control over which locations' conditions are | |
2342 | being evaluated by GDB or the remote stub. */ | |
2343 | if (null_condition_or_parse_error) | |
2344 | { | |
2345 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2346 | { | |
2347 | loc = (*loc2p); | |
2348 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2349 | { | |
2350 | /* Only go as far as the first NULL bytecode is | |
2351 | located. */ | |
2352 | if (!loc->cond_bytecode) | |
2353 | return; | |
2354 | ||
2355 | free_agent_expr (loc->cond_bytecode); | |
2356 | loc->cond_bytecode = NULL; | |
2357 | } | |
2358 | } | |
2359 | } | |
2360 | ||
2361 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2362 | for this location's address. */ | |
2363 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2364 | { | |
2365 | loc = (*loc2p); | |
2366 | if (loc->cond | |
2367 | && is_breakpoint (loc->owner) | |
2368 | && loc->pspace->num == bl->pspace->num | |
2369 | && loc->owner->enable_state == bp_enabled | |
2370 | && loc->enabled) | |
2371 | /* Add the condition to the vector. This will be used later to send the | |
2372 | conditions to the target. */ | |
2373 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2374 | loc->cond_bytecode); | |
2375 | } | |
2376 | ||
2377 | return; | |
2378 | } | |
2379 | ||
d3ce09f5 SS |
2380 | /* Parses a command described by string CMD into an agent expression |
2381 | bytecode suitable for evaluation by the bytecode interpreter. | |
2382 | Return NULL if there was any error during parsing. */ | |
2383 | ||
2384 | static struct agent_expr * | |
2385 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2386 | { | |
2387 | struct cleanup *old_cleanups = 0; | |
2388 | struct expression *expr, **argvec; | |
2389 | struct agent_expr *aexpr = NULL; | |
bbc13ae3 KS |
2390 | const char *cmdrest; |
2391 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2392 | struct format_piece *fpieces; |
2393 | int nargs; | |
2394 | struct gdbarch *gdbarch = get_current_arch (); | |
2395 | ||
2396 | if (!cmd) | |
2397 | return NULL; | |
2398 | ||
2399 | cmdrest = cmd; | |
2400 | ||
2401 | if (*cmdrest == ',') | |
2402 | ++cmdrest; | |
bbc13ae3 | 2403 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2404 | |
2405 | if (*cmdrest++ != '"') | |
2406 | error (_("No format string following the location")); | |
2407 | ||
2408 | format_start = cmdrest; | |
2409 | ||
2410 | fpieces = parse_format_string (&cmdrest); | |
2411 | ||
2412 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2413 | ||
2414 | format_end = cmdrest; | |
2415 | ||
2416 | if (*cmdrest++ != '"') | |
2417 | error (_("Bad format string, non-terminated '\"'.")); | |
2418 | ||
bbc13ae3 | 2419 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2420 | |
2421 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2422 | error (_("Invalid argument syntax")); | |
2423 | ||
2424 | if (*cmdrest == ',') | |
2425 | cmdrest++; | |
bbc13ae3 | 2426 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2427 | |
2428 | /* For each argument, make an expression. */ | |
2429 | ||
2430 | argvec = (struct expression **) alloca (strlen (cmd) | |
2431 | * sizeof (struct expression *)); | |
2432 | ||
2433 | nargs = 0; | |
2434 | while (*cmdrest != '\0') | |
2435 | { | |
bbc13ae3 | 2436 | const char *cmd1; |
d3ce09f5 SS |
2437 | |
2438 | cmd1 = cmdrest; | |
2439 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2440 | argvec[nargs++] = expr; | |
2441 | cmdrest = cmd1; | |
2442 | if (*cmdrest == ',') | |
2443 | ++cmdrest; | |
2444 | } | |
2445 | ||
2446 | /* We don't want to stop processing, so catch any errors | |
2447 | that may show up. */ | |
492d29ea | 2448 | TRY |
d3ce09f5 SS |
2449 | { |
2450 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2451 | format_start, format_end - format_start, | |
2452 | fpieces, nargs, argvec); | |
2453 | } | |
492d29ea | 2454 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2455 | { |
2456 | /* If we got here, it means the command could not be parsed to a valid | |
2457 | bytecode expression and thus can't be evaluated on the target's side. | |
2458 | It's no use iterating through the other commands. */ | |
492d29ea | 2459 | aexpr = NULL; |
d3ce09f5 | 2460 | } |
492d29ea PA |
2461 | END_CATCH |
2462 | ||
2463 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2464 | |
d3ce09f5 SS |
2465 | /* We have a valid agent expression, return it. */ |
2466 | return aexpr; | |
2467 | } | |
2468 | ||
2469 | /* Based on location BL, create a list of breakpoint commands to be | |
2470 | passed on to the target. If we have duplicated locations with | |
2471 | different commands, we will add any such to the list. */ | |
2472 | ||
2473 | static void | |
2474 | build_target_command_list (struct bp_location *bl) | |
2475 | { | |
2476 | struct bp_location **locp = NULL, **loc2p; | |
2477 | int null_command_or_parse_error = 0; | |
2478 | int modified = bl->needs_update; | |
2479 | struct bp_location *loc; | |
2480 | ||
8b4f3082 PA |
2481 | /* Release commands left over from a previous insert. */ |
2482 | VEC_free (agent_expr_p, bl->target_info.tcommands); | |
2483 | ||
41fac0cf | 2484 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2485 | return; |
2486 | ||
41fac0cf PA |
2487 | /* For now, limit to agent-style dprintf breakpoints. */ |
2488 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2489 | return; |
2490 | ||
41fac0cf PA |
2491 | /* For now, if we have any duplicate location that isn't a dprintf, |
2492 | don't install the target-side commands, as that would make the | |
2493 | breakpoint not be reported to the core, and we'd lose | |
2494 | control. */ | |
2495 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2496 | { | |
2497 | loc = (*loc2p); | |
2498 | if (is_breakpoint (loc->owner) | |
2499 | && loc->pspace->num == bl->pspace->num | |
2500 | && loc->owner->type != bp_dprintf) | |
2501 | return; | |
2502 | } | |
2503 | ||
d3ce09f5 SS |
2504 | /* Do a first pass to check for locations with no assigned |
2505 | conditions or conditions that fail to parse to a valid agent expression | |
2506 | bytecode. If any of these happen, then it's no use to send conditions | |
2507 | to the target since this location will always trigger and generate a | |
2508 | response back to GDB. */ | |
2509 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2510 | { | |
2511 | loc = (*loc2p); | |
2512 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2513 | { | |
2514 | if (modified) | |
2515 | { | |
2516 | struct agent_expr *aexpr; | |
2517 | ||
2518 | /* Re-parse the commands since something changed. In that | |
2519 | case we already freed the command bytecodes (see | |
2520 | force_breakpoint_reinsertion). We just | |
2521 | need to parse the command to bytecodes again. */ | |
2522 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2523 | loc->owner->extra_string); | |
2524 | loc->cmd_bytecode = aexpr; | |
2525 | ||
2526 | if (!aexpr) | |
2527 | continue; | |
2528 | } | |
2529 | ||
2530 | /* If we have a NULL bytecode expression, it means something | |
2531 | went wrong or we have a null command expression. */ | |
2532 | if (!loc->cmd_bytecode) | |
2533 | { | |
2534 | null_command_or_parse_error = 1; | |
2535 | break; | |
2536 | } | |
2537 | } | |
2538 | } | |
2539 | ||
2540 | /* If anything failed, then we're not doing target-side commands, | |
2541 | and so clean up. */ | |
2542 | if (null_command_or_parse_error) | |
2543 | { | |
2544 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2545 | { | |
2546 | loc = (*loc2p); | |
2547 | if (is_breakpoint (loc->owner) | |
2548 | && loc->pspace->num == bl->pspace->num) | |
2549 | { | |
2550 | /* Only go as far as the first NULL bytecode is | |
2551 | located. */ | |
40fb6c5e | 2552 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2553 | return; |
2554 | ||
40fb6c5e HZ |
2555 | free_agent_expr (loc->cmd_bytecode); |
2556 | loc->cmd_bytecode = NULL; | |
d3ce09f5 SS |
2557 | } |
2558 | } | |
2559 | } | |
2560 | ||
2561 | /* No NULL commands or failed bytecode generation. Build a command list | |
2562 | for this location's address. */ | |
2563 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2564 | { | |
2565 | loc = (*loc2p); | |
2566 | if (loc->owner->extra_string | |
2567 | && is_breakpoint (loc->owner) | |
2568 | && loc->pspace->num == bl->pspace->num | |
2569 | && loc->owner->enable_state == bp_enabled | |
2570 | && loc->enabled) | |
2571 | /* Add the command to the vector. This will be used later | |
2572 | to send the commands to the target. */ | |
2573 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2574 | loc->cmd_bytecode); | |
2575 | } | |
2576 | ||
2577 | bl->target_info.persist = 0; | |
2578 | /* Maybe flag this location as persistent. */ | |
2579 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2580 | bl->target_info.persist = 1; | |
2581 | } | |
2582 | ||
35df4500 TJB |
2583 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2584 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2585 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2586 | Returns 0 for success, 1 if the bp_location type is not supported or |
2587 | -1 for failure. | |
879bfdc2 | 2588 | |
4a64f543 MS |
2589 | NOTE drow/2003-09-09: This routine could be broken down to an |
2590 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2591 | static int |
35df4500 | 2592 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2593 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2594 | int *disabled_breaks, |
dd61ec5c MW |
2595 | int *hw_breakpoint_error, |
2596 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2597 | { |
0000e5cc PA |
2598 | enum errors bp_err = GDB_NO_ERROR; |
2599 | const char *bp_err_message = NULL; | |
879bfdc2 | 2600 | |
b775012e | 2601 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2602 | return 0; |
2603 | ||
35c63cd8 JB |
2604 | /* Note we don't initialize bl->target_info, as that wipes out |
2605 | the breakpoint location's shadow_contents if the breakpoint | |
2606 | is still inserted at that location. This in turn breaks | |
2607 | target_read_memory which depends on these buffers when | |
2608 | a memory read is requested at the breakpoint location: | |
2609 | Once the target_info has been wiped, we fail to see that | |
2610 | we have a breakpoint inserted at that address and thus | |
2611 | read the breakpoint instead of returning the data saved in | |
2612 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2613 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2614 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2615 | bl->target_info.length = bl->length; |
8181d85f | 2616 | |
b775012e LM |
2617 | /* When working with target-side conditions, we must pass all the conditions |
2618 | for the same breakpoint address down to the target since GDB will not | |
2619 | insert those locations. With a list of breakpoint conditions, the target | |
2620 | can decide when to stop and notify GDB. */ | |
2621 | ||
2622 | if (is_breakpoint (bl->owner)) | |
2623 | { | |
2624 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2625 | build_target_command_list (bl); |
2626 | /* Reset the modification marker. */ | |
b775012e LM |
2627 | bl->needs_update = 0; |
2628 | } | |
2629 | ||
35df4500 TJB |
2630 | if (bl->loc_type == bp_loc_software_breakpoint |
2631 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2632 | { |
35df4500 | 2633 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2634 | { |
2635 | /* If the explicitly specified breakpoint type | |
2636 | is not hardware breakpoint, check the memory map to see | |
2637 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2638 | |
765dc015 VP |
2639 | Two important cases are: |
2640 | - location type is not hardware breakpoint, memory | |
2641 | is readonly. We change the type of the location to | |
2642 | hardware breakpoint. | |
4a64f543 MS |
2643 | - location type is hardware breakpoint, memory is |
2644 | read-write. This means we've previously made the | |
2645 | location hardware one, but then the memory map changed, | |
2646 | so we undo. | |
765dc015 | 2647 | |
4a64f543 MS |
2648 | When breakpoints are removed, remove_breakpoints will use |
2649 | location types we've just set here, the only possible | |
2650 | problem is that memory map has changed during running | |
2651 | program, but it's not going to work anyway with current | |
2652 | gdb. */ | |
765dc015 | 2653 | struct mem_region *mr |
0d5ed153 | 2654 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2655 | |
2656 | if (mr) | |
2657 | { | |
2658 | if (automatic_hardware_breakpoints) | |
2659 | { | |
765dc015 VP |
2660 | enum bp_loc_type new_type; |
2661 | ||
2662 | if (mr->attrib.mode != MEM_RW) | |
2663 | new_type = bp_loc_hardware_breakpoint; | |
2664 | else | |
2665 | new_type = bp_loc_software_breakpoint; | |
2666 | ||
35df4500 | 2667 | if (new_type != bl->loc_type) |
765dc015 VP |
2668 | { |
2669 | static int said = 0; | |
cc59ec59 | 2670 | |
35df4500 | 2671 | bl->loc_type = new_type; |
765dc015 VP |
2672 | if (!said) |
2673 | { | |
3e43a32a MS |
2674 | fprintf_filtered (gdb_stdout, |
2675 | _("Note: automatically using " | |
2676 | "hardware breakpoints for " | |
2677 | "read-only addresses.\n")); | |
765dc015 VP |
2678 | said = 1; |
2679 | } | |
2680 | } | |
2681 | } | |
35df4500 | 2682 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2683 | && mr->attrib.mode != MEM_RW) |
2684 | { | |
2685 | fprintf_unfiltered (tmp_error_stream, | |
2686 | _("Cannot insert breakpoint %d.\n" | |
2687 | "Cannot set software breakpoint " | |
2688 | "at read-only address %s\n"), | |
2689 | bl->owner->number, | |
2690 | paddress (bl->gdbarch, bl->address)); | |
2691 | return 1; | |
2692 | } | |
765dc015 VP |
2693 | } |
2694 | } | |
2695 | ||
879bfdc2 DJ |
2696 | /* First check to see if we have to handle an overlay. */ |
2697 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2698 | || bl->section == NULL |
2699 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2700 | { |
2701 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2702 | TRY |
dd61ec5c | 2703 | { |
0000e5cc PA |
2704 | int val; |
2705 | ||
dd61ec5c | 2706 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2707 | if (val) |
2708 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2709 | } |
492d29ea | 2710 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2711 | { |
0000e5cc PA |
2712 | bp_err = e.error; |
2713 | bp_err_message = e.message; | |
dd61ec5c | 2714 | } |
492d29ea | 2715 | END_CATCH |
879bfdc2 DJ |
2716 | } |
2717 | else | |
2718 | { | |
4a64f543 | 2719 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2720 | Shall we set a breakpoint at the LMA? */ |
2721 | if (!overlay_events_enabled) | |
2722 | { | |
2723 | /* Yes -- overlay event support is not active, | |
2724 | so we must try to set a breakpoint at the LMA. | |
2725 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2726 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2727 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2728 | bl->owner->number); |
879bfdc2 DJ |
2729 | else |
2730 | { | |
35df4500 TJB |
2731 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2732 | bl->section); | |
879bfdc2 | 2733 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2734 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2735 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2736 | |
2737 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2738 | TRY |
0000e5cc PA |
2739 | { |
2740 | int val; | |
2741 | ||
2742 | val = target_insert_breakpoint (bl->gdbarch, | |
2743 | &bl->overlay_target_info); | |
2744 | if (val) | |
2745 | bp_err = GENERIC_ERROR; | |
2746 | } | |
492d29ea | 2747 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2748 | { |
2749 | bp_err = e.error; | |
2750 | bp_err_message = e.message; | |
2751 | } | |
492d29ea | 2752 | END_CATCH |
0000e5cc PA |
2753 | |
2754 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2755 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2756 | "Overlay breakpoint %d " |
2757 | "failed: in ROM?\n", | |
35df4500 | 2758 | bl->owner->number); |
879bfdc2 DJ |
2759 | } |
2760 | } | |
2761 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2762 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2763 | { |
2764 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2765 | TRY |
dd61ec5c | 2766 | { |
0000e5cc PA |
2767 | int val; |
2768 | ||
dd61ec5c | 2769 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2770 | if (val) |
2771 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2772 | } |
492d29ea | 2773 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2774 | { |
0000e5cc PA |
2775 | bp_err = e.error; |
2776 | bp_err_message = e.message; | |
dd61ec5c | 2777 | } |
492d29ea | 2778 | END_CATCH |
879bfdc2 DJ |
2779 | } |
2780 | else | |
2781 | { | |
2782 | /* No. This breakpoint will not be inserted. | |
2783 | No error, but do not mark the bp as 'inserted'. */ | |
2784 | return 0; | |
2785 | } | |
2786 | } | |
2787 | ||
0000e5cc | 2788 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2789 | { |
2790 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2791 | |
2792 | /* In some cases, we might not be able to insert a | |
2793 | breakpoint in a shared library that has already been | |
2794 | removed, but we have not yet processed the shlib unload | |
2795 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2796 | breakpoint insertion themselves can't tell why the |
2797 | breakpoint insertion failed (e.g., the remote target | |
2798 | doesn't define error codes), so we must treat generic | |
2799 | errors as memory errors. */ | |
0000e5cc | 2800 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2801 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2802 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2803 | || shared_objfile_contains_address_p (bl->pspace, |
2804 | bl->address))) | |
879bfdc2 | 2805 | { |
4a64f543 | 2806 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2807 | bl->shlib_disabled = 1; |
8d3788bd | 2808 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2809 | if (!*disabled_breaks) |
2810 | { | |
2811 | fprintf_unfiltered (tmp_error_stream, | |
2812 | "Cannot insert breakpoint %d.\n", | |
2813 | bl->owner->number); | |
2814 | fprintf_unfiltered (tmp_error_stream, | |
2815 | "Temporarily disabling shared " | |
2816 | "library breakpoints:\n"); | |
2817 | } | |
2818 | *disabled_breaks = 1; | |
879bfdc2 | 2819 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2820 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2821 | return 0; |
879bfdc2 DJ |
2822 | } |
2823 | else | |
879bfdc2 | 2824 | { |
35df4500 | 2825 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2826 | { |
0000e5cc PA |
2827 | *hw_breakpoint_error = 1; |
2828 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2829 | fprintf_unfiltered (tmp_error_stream, |
2830 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2831 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2832 | if (bp_err_message != NULL) | |
2833 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2834 | } |
2835 | else | |
2836 | { | |
0000e5cc PA |
2837 | if (bp_err_message == NULL) |
2838 | { | |
2839 | char *message | |
2840 | = memory_error_message (TARGET_XFER_E_IO, | |
2841 | bl->gdbarch, bl->address); | |
2842 | struct cleanup *old_chain = make_cleanup (xfree, message); | |
2843 | ||
2844 | fprintf_unfiltered (tmp_error_stream, | |
2845 | "Cannot insert breakpoint %d.\n" | |
2846 | "%s\n", | |
2847 | bl->owner->number, message); | |
2848 | do_cleanups (old_chain); | |
2849 | } | |
2850 | else | |
2851 | { | |
2852 | fprintf_unfiltered (tmp_error_stream, | |
2853 | "Cannot insert breakpoint %d: %s\n", | |
2854 | bl->owner->number, | |
2855 | bp_err_message); | |
2856 | } | |
879bfdc2 | 2857 | } |
0000e5cc | 2858 | return 1; |
879bfdc2 DJ |
2859 | |
2860 | } | |
2861 | } | |
2862 | else | |
35df4500 | 2863 | bl->inserted = 1; |
879bfdc2 | 2864 | |
0000e5cc | 2865 | return 0; |
879bfdc2 DJ |
2866 | } |
2867 | ||
35df4500 | 2868 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2869 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2870 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2871 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2872 | { |
0000e5cc PA |
2873 | int val; |
2874 | ||
77b06cd7 TJB |
2875 | gdb_assert (bl->owner->ops != NULL |
2876 | && bl->owner->ops->insert_location != NULL); | |
2877 | ||
2878 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2879 | |
2880 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2881 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2882 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2883 | { |
2884 | struct bp_location *loc, **loc_temp; | |
2885 | ||
2886 | /* But don't try to insert it, if there's already another | |
2887 | hw_access location that would be considered a duplicate | |
2888 | of this one. */ | |
2889 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2890 | if (loc != bl |
85d721b8 | 2891 | && loc->watchpoint_type == hw_access |
35df4500 | 2892 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2893 | { |
35df4500 TJB |
2894 | bl->duplicate = 1; |
2895 | bl->inserted = 1; | |
2896 | bl->target_info = loc->target_info; | |
2897 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2898 | val = 0; |
2899 | break; | |
2900 | } | |
2901 | ||
2902 | if (val == 1) | |
2903 | { | |
77b06cd7 TJB |
2904 | bl->watchpoint_type = hw_access; |
2905 | val = bl->owner->ops->insert_location (bl); | |
2906 | ||
2907 | if (val) | |
2908 | /* Back to the original value. */ | |
2909 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2910 | } |
2911 | } | |
2912 | ||
35df4500 | 2913 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2914 | } |
2915 | ||
35df4500 | 2916 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2917 | { |
0000e5cc PA |
2918 | int val; |
2919 | ||
77b06cd7 TJB |
2920 | gdb_assert (bl->owner->ops != NULL |
2921 | && bl->owner->ops->insert_location != NULL); | |
2922 | ||
2923 | val = bl->owner->ops->insert_location (bl); | |
2924 | if (val) | |
2925 | { | |
2926 | bl->owner->enable_state = bp_disabled; | |
2927 | ||
2928 | if (val == 1) | |
2929 | warning (_("\ | |
2930 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2931 | of catchpoint."), bl->owner->number); | |
2932 | else | |
2933 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2934 | } | |
2935 | ||
2936 | bl->inserted = (val == 0); | |
1640b821 DJ |
2937 | |
2938 | /* We've already printed an error message if there was a problem | |
2939 | inserting this catchpoint, and we've disabled the catchpoint, | |
2940 | so just return success. */ | |
2941 | return 0; | |
879bfdc2 DJ |
2942 | } |
2943 | ||
2944 | return 0; | |
2945 | } | |
2946 | ||
6c95b8df PA |
2947 | /* This function is called when program space PSPACE is about to be |
2948 | deleted. It takes care of updating breakpoints to not reference | |
2949 | PSPACE anymore. */ | |
2950 | ||
2951 | void | |
2952 | breakpoint_program_space_exit (struct program_space *pspace) | |
2953 | { | |
2954 | struct breakpoint *b, *b_temp; | |
876fa593 | 2955 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2956 | |
2957 | /* Remove any breakpoint that was set through this program space. */ | |
2958 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2959 | { | |
2960 | if (b->pspace == pspace) | |
2961 | delete_breakpoint (b); | |
2962 | } | |
2963 | ||
2964 | /* Breakpoints set through other program spaces could have locations | |
2965 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2966 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2967 | { |
2968 | struct bp_location *tmp; | |
2969 | ||
2970 | if (loc->pspace == pspace) | |
2971 | { | |
2bdf28a0 | 2972 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2973 | if (loc->owner->loc == loc) |
2974 | loc->owner->loc = loc->next; | |
2975 | else | |
2976 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2977 | if (tmp->next == loc) | |
2978 | { | |
2979 | tmp->next = loc->next; | |
2980 | break; | |
2981 | } | |
2982 | } | |
2983 | } | |
2984 | ||
2985 | /* Now update the global location list to permanently delete the | |
2986 | removed locations above. */ | |
44702360 | 2987 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2988 | } |
2989 | ||
74960c60 VP |
2990 | /* Make sure all breakpoints are inserted in inferior. |
2991 | Throws exception on any error. | |
2992 | A breakpoint that is already inserted won't be inserted | |
2993 | again, so calling this function twice is safe. */ | |
2994 | void | |
2995 | insert_breakpoints (void) | |
2996 | { | |
2997 | struct breakpoint *bpt; | |
2998 | ||
2999 | ALL_BREAKPOINTS (bpt) | |
3000 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
3001 | { |
3002 | struct watchpoint *w = (struct watchpoint *) bpt; | |
3003 | ||
3004 | update_watchpoint (w, 0 /* don't reparse. */); | |
3005 | } | |
74960c60 | 3006 | |
04086b45 PA |
3007 | /* Updating watchpoints creates new locations, so update the global |
3008 | location list. Explicitly tell ugll to insert locations and | |
3009 | ignore breakpoints_always_inserted_mode. */ | |
3010 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
3011 | } |
3012 | ||
20388dd6 YQ |
3013 | /* Invoke CALLBACK for each of bp_location. */ |
3014 | ||
3015 | void | |
3016 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
3017 | { | |
3018 | struct bp_location *loc, **loc_tmp; | |
3019 | ||
3020 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
3021 | { | |
3022 | callback (loc, NULL); | |
3023 | } | |
3024 | } | |
3025 | ||
b775012e LM |
3026 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3027 | target. It is the case with deleting and disabling of breakpoints when using | |
3028 | always-inserted mode. */ | |
3029 | ||
3030 | static void | |
3031 | update_inserted_breakpoint_locations (void) | |
3032 | { | |
3033 | struct bp_location *bl, **blp_tmp; | |
3034 | int error_flag = 0; | |
3035 | int val = 0; | |
3036 | int disabled_breaks = 0; | |
3037 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3038 | int hw_bp_details_reported = 0; |
b775012e LM |
3039 | |
3040 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
3041 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
3042 | ||
3043 | /* Explicitly mark the warning -- this will only be printed if | |
3044 | there was an error. */ | |
3045 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
3046 | ||
3047 | save_current_space_and_thread (); | |
3048 | ||
3049 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3050 | { | |
3051 | /* We only want to update software breakpoints and hardware | |
3052 | breakpoints. */ | |
3053 | if (!is_breakpoint (bl->owner)) | |
3054 | continue; | |
3055 | ||
3056 | /* We only want to update locations that are already inserted | |
3057 | and need updating. This is to avoid unwanted insertion during | |
3058 | deletion of breakpoints. */ | |
3059 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
3060 | continue; | |
3061 | ||
3062 | switch_to_program_space_and_thread (bl->pspace); | |
3063 | ||
3064 | /* For targets that support global breakpoints, there's no need | |
3065 | to select an inferior to insert breakpoint to. In fact, even | |
3066 | if we aren't attached to any process yet, we should still | |
3067 | insert breakpoints. */ | |
f5656ead | 3068 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
3069 | && ptid_equal (inferior_ptid, null_ptid)) |
3070 | continue; | |
3071 | ||
3072 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 3073 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3074 | if (val) |
3075 | error_flag = val; | |
3076 | } | |
3077 | ||
3078 | if (error_flag) | |
3079 | { | |
3080 | target_terminal_ours_for_output (); | |
3081 | error_stream (tmp_error_stream); | |
3082 | } | |
3083 | ||
3084 | do_cleanups (cleanups); | |
3085 | } | |
3086 | ||
c30eee59 | 3087 | /* Used when starting or continuing the program. */ |
c906108c | 3088 | |
74960c60 VP |
3089 | static void |
3090 | insert_breakpoint_locations (void) | |
c906108c | 3091 | { |
a5606eee | 3092 | struct breakpoint *bpt; |
35df4500 | 3093 | struct bp_location *bl, **blp_tmp; |
eacd795a | 3094 | int error_flag = 0; |
c906108c | 3095 | int val = 0; |
3fbb6ffa | 3096 | int disabled_breaks = 0; |
81d0cc19 | 3097 | int hw_breakpoint_error = 0; |
dd61ec5c | 3098 | int hw_bp_error_explained_already = 0; |
c906108c | 3099 | |
81d0cc19 | 3100 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 3101 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 3102 | |
81d0cc19 GS |
3103 | /* Explicitly mark the warning -- this will only be printed if |
3104 | there was an error. */ | |
3105 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
3106 | |
3107 | save_current_space_and_thread (); | |
3108 | ||
35df4500 | 3109 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3110 | { |
b775012e | 3111 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3112 | continue; |
3113 | ||
4a64f543 MS |
3114 | /* There is no point inserting thread-specific breakpoints if |
3115 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3116 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
3117 | if (bl->owner->thread != -1 |
3118 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
3119 | continue; |
3120 | ||
35df4500 | 3121 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3122 | |
3123 | /* For targets that support global breakpoints, there's no need | |
3124 | to select an inferior to insert breakpoint to. In fact, even | |
3125 | if we aren't attached to any process yet, we should still | |
3126 | insert breakpoints. */ | |
f5656ead | 3127 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
3128 | && ptid_equal (inferior_ptid, null_ptid)) |
3129 | continue; | |
3130 | ||
3fbb6ffa | 3131 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3132 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3133 | if (val) |
eacd795a | 3134 | error_flag = val; |
879bfdc2 | 3135 | } |
c906108c | 3136 | |
4a64f543 MS |
3137 | /* If we failed to insert all locations of a watchpoint, remove |
3138 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3139 | ALL_BREAKPOINTS (bpt) |
3140 | { | |
3141 | int some_failed = 0; | |
3142 | struct bp_location *loc; | |
3143 | ||
3144 | if (!is_hardware_watchpoint (bpt)) | |
3145 | continue; | |
3146 | ||
d6b74ac4 | 3147 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3148 | continue; |
74960c60 VP |
3149 | |
3150 | if (bpt->disposition == disp_del_at_next_stop) | |
3151 | continue; | |
a5606eee VP |
3152 | |
3153 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3154 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3155 | { |
3156 | some_failed = 1; | |
3157 | break; | |
3158 | } | |
3159 | if (some_failed) | |
3160 | { | |
3161 | for (loc = bpt->loc; loc; loc = loc->next) | |
3162 | if (loc->inserted) | |
3163 | remove_breakpoint (loc, mark_uninserted); | |
3164 | ||
3165 | hw_breakpoint_error = 1; | |
3166 | fprintf_unfiltered (tmp_error_stream, | |
3167 | "Could not insert hardware watchpoint %d.\n", | |
3168 | bpt->number); | |
eacd795a | 3169 | error_flag = -1; |
a5606eee VP |
3170 | } |
3171 | } | |
3172 | ||
eacd795a | 3173 | if (error_flag) |
81d0cc19 GS |
3174 | { |
3175 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3176 | message about possibly exhausted resources. */ | |
dd61ec5c | 3177 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3178 | { |
c6510018 MS |
3179 | fprintf_unfiltered (tmp_error_stream, |
3180 | "Could not insert hardware breakpoints:\n\ | |
3181 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 3182 | } |
81d0cc19 GS |
3183 | target_terminal_ours_for_output (); |
3184 | error_stream (tmp_error_stream); | |
3185 | } | |
f7545552 TT |
3186 | |
3187 | do_cleanups (cleanups); | |
c906108c SS |
3188 | } |
3189 | ||
c30eee59 TJB |
3190 | /* Used when the program stops. |
3191 | Returns zero if successful, or non-zero if there was a problem | |
3192 | removing a breakpoint location. */ | |
3193 | ||
c906108c | 3194 | int |
fba45db2 | 3195 | remove_breakpoints (void) |
c906108c | 3196 | { |
35df4500 | 3197 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3198 | int val = 0; |
c906108c | 3199 | |
35df4500 | 3200 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3201 | { |
1e4d1764 | 3202 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 3203 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 3204 | } |
3a1bae8e | 3205 | return val; |
c906108c SS |
3206 | } |
3207 | ||
49fa26b0 PA |
3208 | /* When a thread exits, remove breakpoints that are related to |
3209 | that thread. */ | |
3210 | ||
3211 | static void | |
3212 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3213 | { | |
3214 | struct breakpoint *b, *b_tmp; | |
3215 | ||
3216 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3217 | { | |
96181529 | 3218 | if (b->thread == tp->num && user_breakpoint_p (b)) |
49fa26b0 PA |
3219 | { |
3220 | b->disposition = disp_del_at_next_stop; | |
3221 | ||
3222 | printf_filtered (_("\ | |
46ecd527 | 3223 | Thread-specific breakpoint %d deleted - thread %d no longer in the thread list.\n"), |
49fa26b0 PA |
3224 | b->number, tp->num); |
3225 | ||
3226 | /* Hide it from the user. */ | |
3227 | b->number = 0; | |
3228 | } | |
3229 | } | |
3230 | } | |
3231 | ||
6c95b8df PA |
3232 | /* Remove breakpoints of process PID. */ |
3233 | ||
3234 | int | |
3235 | remove_breakpoints_pid (int pid) | |
3236 | { | |
35df4500 | 3237 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3238 | int val; |
3239 | struct inferior *inf = find_inferior_pid (pid); | |
3240 | ||
35df4500 | 3241 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3242 | { |
35df4500 | 3243 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3244 | continue; |
3245 | ||
fc126975 | 3246 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3247 | { |
35df4500 | 3248 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
3249 | if (val != 0) |
3250 | return val; | |
3251 | } | |
3252 | } | |
3253 | return 0; | |
3254 | } | |
3255 | ||
c906108c | 3256 | int |
fba45db2 | 3257 | reattach_breakpoints (int pid) |
c906108c | 3258 | { |
6c95b8df | 3259 | struct cleanup *old_chain; |
35df4500 | 3260 | struct bp_location *bl, **blp_tmp; |
c906108c | 3261 | int val; |
86b887df | 3262 | struct ui_file *tmp_error_stream; |
dd61ec5c | 3263 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
3264 | struct inferior *inf; |
3265 | struct thread_info *tp; | |
3266 | ||
3267 | tp = any_live_thread_of_process (pid); | |
3268 | if (tp == NULL) | |
3269 | return 1; | |
3270 | ||
3271 | inf = find_inferior_pid (pid); | |
3272 | old_chain = save_inferior_ptid (); | |
3273 | ||
3274 | inferior_ptid = tp->ptid; | |
a4954f26 | 3275 | |
86b887df | 3276 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 3277 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 3278 | |
35df4500 | 3279 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3280 | { |
35df4500 | 3281 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3282 | continue; |
3283 | ||
35df4500 | 3284 | if (bl->inserted) |
c5aa993b | 3285 | { |
35df4500 | 3286 | bl->inserted = 0; |
dd61ec5c | 3287 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
3288 | if (val != 0) |
3289 | { | |
ce696e05 | 3290 | do_cleanups (old_chain); |
c5aa993b JM |
3291 | return val; |
3292 | } | |
3293 | } | |
3294 | } | |
ce696e05 | 3295 | do_cleanups (old_chain); |
c906108c SS |
3296 | return 0; |
3297 | } | |
3298 | ||
e58b0e63 PA |
3299 | static int internal_breakpoint_number = -1; |
3300 | ||
84f4c1fe PM |
3301 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3302 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3303 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3304 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3305 | breakpoint_count and that value incremented. Internal breakpoints |
3306 | do not set the internal var bpnum. */ | |
3307 | static void | |
3308 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3309 | { | |
3310 | if (internal) | |
3311 | b->number = internal_breakpoint_number--; | |
3312 | else | |
3313 | { | |
3314 | set_breakpoint_count (breakpoint_count + 1); | |
3315 | b->number = breakpoint_count; | |
3316 | } | |
3317 | } | |
3318 | ||
e62c965a | 3319 | static struct breakpoint * |
a6d9a66e | 3320 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3321 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3322 | const struct breakpoint_ops *ops) |
e62c965a | 3323 | { |
e62c965a PP |
3324 | struct symtab_and_line sal; |
3325 | struct breakpoint *b; | |
3326 | ||
4a64f543 | 3327 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3328 | |
3329 | sal.pc = address; | |
3330 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3331 | sal.pspace = current_program_space; |
e62c965a | 3332 | |
06edf0c0 | 3333 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3334 | b->number = internal_breakpoint_number--; |
3335 | b->disposition = disp_donttouch; | |
3336 | ||
3337 | return b; | |
3338 | } | |
3339 | ||
17450429 PP |
3340 | static const char *const longjmp_names[] = |
3341 | { | |
3342 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3343 | }; | |
3344 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3345 | ||
3346 | /* Per-objfile data private to breakpoint.c. */ | |
3347 | struct breakpoint_objfile_data | |
3348 | { | |
3349 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3b7344d5 | 3350 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3351 | |
3352 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3b7344d5 | 3353 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3354 | |
28106bc2 SDJ |
3355 | /* True if we have looked for longjmp probes. */ |
3356 | int longjmp_searched; | |
3357 | ||
3358 | /* SystemTap probe points for longjmp (if any). */ | |
3359 | VEC (probe_p) *longjmp_probes; | |
3360 | ||
17450429 | 3361 | /* Minimal symbol for "std::terminate()" (if any). */ |
3b7344d5 | 3362 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3363 | |
3364 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3b7344d5 | 3365 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3366 | |
3367 | /* True if we have looked for exception probes. */ | |
3368 | int exception_searched; | |
3369 | ||
3370 | /* SystemTap probe points for unwinding (if any). */ | |
3371 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3372 | }; |
3373 | ||
3374 | static const struct objfile_data *breakpoint_objfile_key; | |
3375 | ||
3376 | /* Minimal symbol not found sentinel. */ | |
3377 | static struct minimal_symbol msym_not_found; | |
3378 | ||
3379 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3380 | ||
3381 | static int | |
3382 | msym_not_found_p (const struct minimal_symbol *msym) | |
3383 | { | |
3384 | return msym == &msym_not_found; | |
3385 | } | |
3386 | ||
3387 | /* Return per-objfile data needed by breakpoint.c. | |
3388 | Allocate the data if necessary. */ | |
3389 | ||
3390 | static struct breakpoint_objfile_data * | |
3391 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3392 | { | |
3393 | struct breakpoint_objfile_data *bp_objfile_data; | |
3394 | ||
3395 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3396 | if (bp_objfile_data == NULL) | |
3397 | { | |
3398 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3399 | sizeof (*bp_objfile_data)); | |
3400 | ||
3401 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3402 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3403 | } | |
3404 | return bp_objfile_data; | |
3405 | } | |
3406 | ||
28106bc2 SDJ |
3407 | static void |
3408 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3409 | { | |
3410 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3411 | ||
3412 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3413 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3414 | } | |
3415 | ||
e62c965a | 3416 | static void |
af02033e | 3417 | create_overlay_event_breakpoint (void) |
e62c965a | 3418 | { |
69de3c6a | 3419 | struct objfile *objfile; |
af02033e | 3420 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3421 | |
69de3c6a PP |
3422 | ALL_OBJFILES (objfile) |
3423 | { | |
3424 | struct breakpoint *b; | |
17450429 PP |
3425 | struct breakpoint_objfile_data *bp_objfile_data; |
3426 | CORE_ADDR addr; | |
67994074 | 3427 | struct explicit_location explicit_loc; |
69de3c6a | 3428 | |
17450429 PP |
3429 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3430 | ||
3b7344d5 | 3431 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3432 | continue; |
3433 | ||
3b7344d5 | 3434 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3435 | { |
3b7344d5 | 3436 | struct bound_minimal_symbol m; |
17450429 PP |
3437 | |
3438 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3439 | if (m.minsym == NULL) |
17450429 PP |
3440 | { |
3441 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3442 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3443 | continue; |
3444 | } | |
3445 | bp_objfile_data->overlay_msym = m; | |
3446 | } | |
e62c965a | 3447 | |
77e371c0 | 3448 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3449 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3450 | bp_overlay_event, |
3451 | &internal_breakpoint_ops); | |
67994074 KS |
3452 | initialize_explicit_location (&explicit_loc); |
3453 | explicit_loc.function_name = ASTRDUP (func_name); | |
3454 | b->location = new_explicit_location (&explicit_loc); | |
e62c965a | 3455 | |
69de3c6a PP |
3456 | if (overlay_debugging == ovly_auto) |
3457 | { | |
3458 | b->enable_state = bp_enabled; | |
3459 | overlay_events_enabled = 1; | |
3460 | } | |
3461 | else | |
3462 | { | |
3463 | b->enable_state = bp_disabled; | |
3464 | overlay_events_enabled = 0; | |
3465 | } | |
e62c965a | 3466 | } |
44702360 | 3467 | update_global_location_list (UGLL_MAY_INSERT); |
e62c965a PP |
3468 | } |
3469 | ||
0fd8e87f | 3470 | static void |
af02033e | 3471 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3472 | { |
6c95b8df | 3473 | struct program_space *pspace; |
6c95b8df PA |
3474 | struct cleanup *old_chain; |
3475 | ||
3476 | old_chain = save_current_program_space (); | |
0fd8e87f | 3477 | |
6c95b8df | 3478 | ALL_PSPACES (pspace) |
af02033e PP |
3479 | { |
3480 | struct objfile *objfile; | |
3481 | ||
3482 | set_current_program_space (pspace); | |
3483 | ||
3484 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3485 | { |
af02033e PP |
3486 | int i; |
3487 | struct gdbarch *gdbarch; | |
17450429 | 3488 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3489 | |
af02033e | 3490 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3491 | |
17450429 PP |
3492 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3493 | ||
28106bc2 SDJ |
3494 | if (!bp_objfile_data->longjmp_searched) |
3495 | { | |
25f9533e SDJ |
3496 | VEC (probe_p) *ret; |
3497 | ||
3498 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3499 | if (ret != NULL) | |
3500 | { | |
3501 | /* We are only interested in checking one element. */ | |
3502 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3503 | ||
3504 | if (!can_evaluate_probe_arguments (p)) | |
3505 | { | |
3506 | /* We cannot use the probe interface here, because it does | |
3507 | not know how to evaluate arguments. */ | |
3508 | VEC_free (probe_p, ret); | |
3509 | ret = NULL; | |
3510 | } | |
3511 | } | |
3512 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3513 | bp_objfile_data->longjmp_searched = 1; |
3514 | } | |
3515 | ||
3516 | if (bp_objfile_data->longjmp_probes != NULL) | |
3517 | { | |
3518 | int i; | |
3519 | struct probe *probe; | |
3520 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3521 | ||
3522 | for (i = 0; | |
3523 | VEC_iterate (probe_p, | |
3524 | bp_objfile_data->longjmp_probes, | |
3525 | i, probe); | |
3526 | ++i) | |
3527 | { | |
3528 | struct breakpoint *b; | |
3529 | ||
729662a5 TT |
3530 | b = create_internal_breakpoint (gdbarch, |
3531 | get_probe_address (probe, | |
3532 | objfile), | |
28106bc2 SDJ |
3533 | bp_longjmp_master, |
3534 | &internal_breakpoint_ops); | |
5b56227b KS |
3535 | b->location |
3536 | = new_probe_location ("-probe-stap libc:longjmp"); | |
28106bc2 SDJ |
3537 | b->enable_state = bp_disabled; |
3538 | } | |
3539 | ||
3540 | continue; | |
3541 | } | |
3542 | ||
0569175e TSD |
3543 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3544 | continue; | |
3545 | ||
17450429 | 3546 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3547 | { |
3548 | struct breakpoint *b; | |
af02033e | 3549 | const char *func_name; |
17450429 | 3550 | CORE_ADDR addr; |
67994074 | 3551 | struct explicit_location explicit_loc; |
6c95b8df | 3552 | |
3b7344d5 | 3553 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3554 | continue; |
0fd8e87f | 3555 | |
17450429 | 3556 | func_name = longjmp_names[i]; |
3b7344d5 | 3557 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3558 | { |
3b7344d5 | 3559 | struct bound_minimal_symbol m; |
17450429 PP |
3560 | |
3561 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3562 | if (m.minsym == NULL) |
17450429 PP |
3563 | { |
3564 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3565 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3566 | continue; |
3567 | } | |
3568 | bp_objfile_data->longjmp_msym[i] = m; | |
3569 | } | |
3570 | ||
77e371c0 | 3571 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3572 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3573 | &internal_breakpoint_ops); | |
67994074 KS |
3574 | initialize_explicit_location (&explicit_loc); |
3575 | explicit_loc.function_name = ASTRDUP (func_name); | |
3576 | b->location = new_explicit_location (&explicit_loc); | |
af02033e PP |
3577 | b->enable_state = bp_disabled; |
3578 | } | |
0fd8e87f | 3579 | } |
af02033e | 3580 | } |
44702360 | 3581 | update_global_location_list (UGLL_MAY_INSERT); |
6c95b8df PA |
3582 | |
3583 | do_cleanups (old_chain); | |
0fd8e87f UW |
3584 | } |
3585 | ||
af02033e | 3586 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3587 | static void |
af02033e | 3588 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3589 | { |
3590 | struct program_space *pspace; | |
aa7d318d | 3591 | struct cleanup *old_chain; |
af02033e | 3592 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3593 | |
3594 | old_chain = save_current_program_space (); | |
3595 | ||
3596 | ALL_PSPACES (pspace) | |
17450429 PP |
3597 | { |
3598 | struct objfile *objfile; | |
3599 | CORE_ADDR addr; | |
3600 | ||
3601 | set_current_program_space (pspace); | |
3602 | ||
aa7d318d TT |
3603 | ALL_OBJFILES (objfile) |
3604 | { | |
3605 | struct breakpoint *b; | |
17450429 | 3606 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3607 | struct explicit_location explicit_loc; |
aa7d318d | 3608 | |
17450429 | 3609 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3610 | |
3b7344d5 | 3611 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3612 | continue; |
3613 | ||
3b7344d5 | 3614 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3615 | { |
3b7344d5 | 3616 | struct bound_minimal_symbol m; |
17450429 PP |
3617 | |
3618 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3619 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3620 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3621 | { |
3622 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3623 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3624 | continue; |
3625 | } | |
3626 | bp_objfile_data->terminate_msym = m; | |
3627 | } | |
aa7d318d | 3628 | |
77e371c0 | 3629 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3630 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3631 | bp_std_terminate_master, |
3632 | &internal_breakpoint_ops); | |
67994074 KS |
3633 | initialize_explicit_location (&explicit_loc); |
3634 | explicit_loc.function_name = ASTRDUP (func_name); | |
3635 | b->location = new_explicit_location (&explicit_loc); | |
aa7d318d TT |
3636 | b->enable_state = bp_disabled; |
3637 | } | |
17450429 PP |
3638 | } |
3639 | ||
44702360 | 3640 | update_global_location_list (UGLL_MAY_INSERT); |
aa7d318d TT |
3641 | |
3642 | do_cleanups (old_chain); | |
3643 | } | |
3644 | ||
186c406b TT |
3645 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3646 | ||
70221824 | 3647 | static void |
186c406b TT |
3648 | create_exception_master_breakpoint (void) |
3649 | { | |
3650 | struct objfile *objfile; | |
17450429 | 3651 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3652 | |
3653 | ALL_OBJFILES (objfile) | |
3654 | { | |
17450429 PP |
3655 | struct breakpoint *b; |
3656 | struct gdbarch *gdbarch; | |
3657 | struct breakpoint_objfile_data *bp_objfile_data; | |
3658 | CORE_ADDR addr; | |
67994074 | 3659 | struct explicit_location explicit_loc; |
17450429 PP |
3660 | |
3661 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3662 | ||
28106bc2 SDJ |
3663 | /* We prefer the SystemTap probe point if it exists. */ |
3664 | if (!bp_objfile_data->exception_searched) | |
3665 | { | |
25f9533e SDJ |
3666 | VEC (probe_p) *ret; |
3667 | ||
3668 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3669 | ||
3670 | if (ret != NULL) | |
3671 | { | |
3672 | /* We are only interested in checking one element. */ | |
3673 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3674 | ||
3675 | if (!can_evaluate_probe_arguments (p)) | |
3676 | { | |
3677 | /* We cannot use the probe interface here, because it does | |
3678 | not know how to evaluate arguments. */ | |
3679 | VEC_free (probe_p, ret); | |
3680 | ret = NULL; | |
3681 | } | |
3682 | } | |
3683 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3684 | bp_objfile_data->exception_searched = 1; |
3685 | } | |
3686 | ||
3687 | if (bp_objfile_data->exception_probes != NULL) | |
3688 | { | |
3689 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3690 | int i; | |
3691 | struct probe *probe; | |
3692 | ||
3693 | for (i = 0; | |
3694 | VEC_iterate (probe_p, | |
3695 | bp_objfile_data->exception_probes, | |
3696 | i, probe); | |
3697 | ++i) | |
3698 | { | |
3699 | struct breakpoint *b; | |
3700 | ||
729662a5 TT |
3701 | b = create_internal_breakpoint (gdbarch, |
3702 | get_probe_address (probe, | |
3703 | objfile), | |
28106bc2 SDJ |
3704 | bp_exception_master, |
3705 | &internal_breakpoint_ops); | |
5b56227b KS |
3706 | b->location |
3707 | = new_probe_location ("-probe-stap libgcc:unwind"); | |
28106bc2 SDJ |
3708 | b->enable_state = bp_disabled; |
3709 | } | |
3710 | ||
3711 | continue; | |
3712 | } | |
3713 | ||
3714 | /* Otherwise, try the hook function. */ | |
3715 | ||
3b7344d5 | 3716 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3717 | continue; |
3718 | ||
3719 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3720 | |
3b7344d5 | 3721 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3722 | { |
3b7344d5 | 3723 | struct bound_minimal_symbol debug_hook; |
186c406b | 3724 | |
17450429 | 3725 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3726 | if (debug_hook.minsym == NULL) |
17450429 | 3727 | { |
3b7344d5 | 3728 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3729 | continue; |
3730 | } | |
3731 | ||
3732 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3733 | } |
17450429 | 3734 | |
77e371c0 | 3735 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3736 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3737 | ¤t_target); | |
06edf0c0 PA |
3738 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3739 | &internal_breakpoint_ops); | |
67994074 KS |
3740 | initialize_explicit_location (&explicit_loc); |
3741 | explicit_loc.function_name = ASTRDUP (func_name); | |
3742 | b->location = new_explicit_location (&explicit_loc); | |
17450429 | 3743 | b->enable_state = bp_disabled; |
186c406b TT |
3744 | } |
3745 | ||
44702360 | 3746 | update_global_location_list (UGLL_MAY_INSERT); |
186c406b TT |
3747 | } |
3748 | ||
c906108c | 3749 | void |
fba45db2 | 3750 | update_breakpoints_after_exec (void) |
c906108c | 3751 | { |
35df4500 | 3752 | struct breakpoint *b, *b_tmp; |
876fa593 | 3753 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3754 | |
25b22b0a PA |
3755 | /* We're about to delete breakpoints from GDB's lists. If the |
3756 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3757 | writing the breakpoints' "shadow contents" back into memory. The | |
3758 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3759 | do that. Instead, the target is responsible from marking | |
3760 | breakpoints out as soon as it detects an exec. We don't do that | |
3761 | here instead, because there may be other attempts to delete | |
3762 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3763 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3764 | if (bploc->pspace == current_program_space) |
3765 | gdb_assert (!bploc->inserted); | |
c906108c | 3766 | |
35df4500 | 3767 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3768 | { |
6c95b8df PA |
3769 | if (b->pspace != current_program_space) |
3770 | continue; | |
3771 | ||
4a64f543 | 3772 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3773 | if (b->type == bp_shlib_event) |
3774 | { | |
3775 | delete_breakpoint (b); | |
3776 | continue; | |
3777 | } | |
c906108c | 3778 | |
4a64f543 | 3779 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3780 | if (b->type == bp_jit_event) |
3781 | { | |
3782 | delete_breakpoint (b); | |
3783 | continue; | |
3784 | } | |
3785 | ||
1900040c | 3786 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3787 | as must overlay event and longjmp master breakpoints. */ |
3788 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3789 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3790 | || b->type == bp_exception_master) | |
c4093a6a JM |
3791 | { |
3792 | delete_breakpoint (b); | |
3793 | continue; | |
3794 | } | |
3795 | ||
4a64f543 | 3796 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3797 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3798 | { |
3799 | delete_breakpoint (b); | |
3800 | continue; | |
3801 | } | |
3802 | ||
7c16b83e PA |
3803 | /* Just like single-step breakpoints. */ |
3804 | if (b->type == bp_single_step) | |
3805 | { | |
3806 | delete_breakpoint (b); | |
3807 | continue; | |
3808 | } | |
3809 | ||
611c83ae PA |
3810 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3811 | after an exec. */ | |
186c406b | 3812 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3813 | || b->type == bp_longjmp_call_dummy |
186c406b | 3814 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3815 | { |
3816 | delete_breakpoint (b); | |
3817 | continue; | |
3818 | } | |
3819 | ||
ce78b96d JB |
3820 | if (b->type == bp_catchpoint) |
3821 | { | |
3822 | /* For now, none of the bp_catchpoint breakpoints need to | |
3823 | do anything at this point. In the future, if some of | |
3824 | the catchpoints need to something, we will need to add | |
3825 | a new method, and call this method from here. */ | |
3826 | continue; | |
3827 | } | |
3828 | ||
c5aa993b JM |
3829 | /* bp_finish is a special case. The only way we ought to be able |
3830 | to see one of these when an exec() has happened, is if the user | |
3831 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3832 | carries them to the call-site of the current callee, by setting | |
3833 | a temporary bp there and resuming. But in this case, the finish | |
3834 | will carry them entirely through the vfork & exec. | |
3835 | ||
3836 | We don't want to allow a bp_finish to remain inserted now. But | |
3837 | we can't safely delete it, 'cause finish_command has a handle to | |
3838 | the bp on a bpstat, and will later want to delete it. There's a | |
3839 | chance (and I've seen it happen) that if we delete the bp_finish | |
3840 | here, that its storage will get reused by the time finish_command | |
3841 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3842 | We really must allow finish_command to delete a bp_finish. | |
3843 | ||
e5dd4106 | 3844 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3845 | it's safe to delete something others may have handles to?" |
3846 | problem, what we'll do here is just uninsert the bp_finish, and | |
3847 | let finish_command delete it. | |
3848 | ||
3849 | (We know the bp_finish is "doomed" in the sense that it's | |
3850 | momentary, and will be deleted as soon as finish_command sees | |
3851 | the inferior stopped. So it doesn't matter that the bp's | |
3852 | address is probably bogus in the new a.out, unlike e.g., the | |
3853 | solib breakpoints.) */ | |
c5aa993b | 3854 | |
c5aa993b JM |
3855 | if (b->type == bp_finish) |
3856 | { | |
3857 | continue; | |
3858 | } | |
3859 | ||
3860 | /* Without a symbolic address, we have little hope of the | |
3861 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3862 | a.out. */ |
f00aae0f | 3863 | if (event_location_empty_p (b->location)) |
c5aa993b JM |
3864 | { |
3865 | delete_breakpoint (b); | |
3866 | continue; | |
3867 | } | |
c5aa993b | 3868 | } |
c906108c SS |
3869 | } |
3870 | ||
3871 | int | |
d80ee84f | 3872 | detach_breakpoints (ptid_t ptid) |
c906108c | 3873 | { |
35df4500 | 3874 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3875 | int val = 0; |
ce696e05 | 3876 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3877 | struct inferior *inf = current_inferior (); |
c5aa993b | 3878 | |
dfd4cc63 | 3879 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3880 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3881 | |
6c95b8df | 3882 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3883 | inferior_ptid = ptid; |
35df4500 | 3884 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3885 | { |
35df4500 | 3886 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3887 | continue; |
3888 | ||
bd9673a4 PW |
3889 | /* This function must physically remove breakpoints locations |
3890 | from the specified ptid, without modifying the breakpoint | |
3891 | package's state. Locations of type bp_loc_other are only | |
3892 | maintained at GDB side. So, there is no need to remove | |
3893 | these bp_loc_other locations. Moreover, removing these | |
3894 | would modify the breakpoint package's state. */ | |
3895 | if (bl->loc_type == bp_loc_other) | |
3896 | continue; | |
3897 | ||
35df4500 TJB |
3898 | if (bl->inserted) |
3899 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3900 | } |
d03285ec | 3901 | |
ce696e05 | 3902 | do_cleanups (old_chain); |
3a1bae8e | 3903 | return val; |
c906108c SS |
3904 | } |
3905 | ||
35df4500 | 3906 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3907 | Note that this is used to detach breakpoints from a child fork. |
3908 | When we get here, the child isn't in the inferior list, and neither | |
3909 | do we have objects to represent its address space --- we should | |
35df4500 | 3910 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3911 | |
c906108c | 3912 | static int |
35df4500 | 3913 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3914 | { |
3915 | int val; | |
c5aa993b | 3916 | |
35df4500 TJB |
3917 | /* BL is never in moribund_locations by our callers. */ |
3918 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3919 | |
74960c60 VP |
3920 | /* The type of none suggests that owner is actually deleted. |
3921 | This should not ever happen. */ | |
35df4500 | 3922 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3923 | |
35df4500 TJB |
3924 | if (bl->loc_type == bp_loc_software_breakpoint |
3925 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3926 | { |
c02f5703 MS |
3927 | /* "Normal" instruction breakpoint: either the standard |
3928 | trap-instruction bp (bp_breakpoint), or a | |
3929 | bp_hardware_breakpoint. */ | |
3930 | ||
3931 | /* First check to see if we have to handle an overlay. */ | |
3932 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3933 | || bl->section == NULL |
3934 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3935 | { |
3936 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3937 | |
3938 | /* If we're trying to uninsert a memory breakpoint that we | |
3939 | know is set in a dynamic object that is marked | |
3940 | shlib_disabled, then either the dynamic object was | |
3941 | removed with "remove-symbol-file" or with | |
3942 | "nosharedlibrary". In the former case, we don't know | |
3943 | whether another dynamic object might have loaded over the | |
3944 | breakpoint's address -- the user might well let us know | |
3945 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3946 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3947 | list of dynamically loaded objects). If we have the |
3948 | breakpoint's shadow memory, that is, this is a software | |
3949 | breakpoint managed by GDB, check whether the breakpoint | |
3950 | is still inserted in memory, to avoid overwriting wrong | |
3951 | code with stale saved shadow contents. Note that HW | |
3952 | breakpoints don't have shadow memory, as they're | |
3953 | implemented using a mechanism that is not dependent on | |
3954 | being able to modify the target's memory, and as such | |
3955 | they should always be removed. */ | |
3956 | if (bl->shlib_disabled | |
3957 | && bl->target_info.shadow_len != 0 | |
3958 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3959 | val = 0; | |
3960 | else | |
3961 | val = bl->owner->ops->remove_location (bl); | |
c02f5703 | 3962 | } |
c906108c SS |
3963 | else |
3964 | { | |
4a64f543 | 3965 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3966 | Did we set a breakpoint at the LMA? */ |
3967 | if (!overlay_events_enabled) | |
3968 | { | |
3969 | /* Yes -- overlay event support is not active, so we | |
3970 | should have set a breakpoint at the LMA. Remove it. | |
3971 | */ | |
c02f5703 MS |
3972 | /* Ignore any failures: if the LMA is in ROM, we will |
3973 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3974 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3975 | target_remove_hw_breakpoint (bl->gdbarch, | |
3976 | &bl->overlay_target_info); | |
c02f5703 | 3977 | else |
35df4500 TJB |
3978 | target_remove_breakpoint (bl->gdbarch, |
3979 | &bl->overlay_target_info); | |
c02f5703 MS |
3980 | } |
3981 | /* Did we set a breakpoint at the VMA? | |
3982 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3983 | if (bl->inserted) |
c906108c | 3984 | { |
c02f5703 MS |
3985 | /* Yes -- remove it. Previously we did not bother to |
3986 | remove the breakpoint if the section had been | |
3987 | unmapped, but let's not rely on that being safe. We | |
3988 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3989 | |
3990 | /* However, we should remove *software* breakpoints only | |
3991 | if the section is still mapped, or else we overwrite | |
3992 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3993 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3994 | || section_is_mapped (bl->section)) | |
3995 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3996 | else |
3997 | val = 0; | |
c906108c | 3998 | } |
c02f5703 MS |
3999 | else |
4000 | { | |
4001 | /* No -- not inserted, so no need to remove. No error. */ | |
4002 | val = 0; | |
4003 | } | |
c906108c | 4004 | } |
879d1e6b | 4005 | |
08351840 PA |
4006 | /* In some cases, we might not be able to remove a breakpoint in |
4007 | a shared library that has already been removed, but we have | |
4008 | not yet processed the shlib unload event. Similarly for an | |
4009 | unloaded add-symbol-file object - the user might not yet have | |
4010 | had the chance to remove-symbol-file it. shlib_disabled will | |
4011 | be set if the library/object has already been removed, but | |
4012 | the breakpoint hasn't been uninserted yet, e.g., after | |
4013 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
4014 | always-inserted mode. */ | |
076855f9 | 4015 | if (val |
08351840 PA |
4016 | && (bl->loc_type == bp_loc_software_breakpoint |
4017 | && (bl->shlib_disabled | |
4018 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
4019 | || shared_objfile_contains_address_p (bl->pspace, |
4020 | bl->address)))) | |
879d1e6b UW |
4021 | val = 0; |
4022 | ||
c906108c SS |
4023 | if (val) |
4024 | return val; | |
35df4500 | 4025 | bl->inserted = (is == mark_inserted); |
c906108c | 4026 | } |
35df4500 | 4027 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 4028 | { |
77b06cd7 TJB |
4029 | gdb_assert (bl->owner->ops != NULL |
4030 | && bl->owner->ops->remove_location != NULL); | |
4031 | ||
35df4500 | 4032 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 4033 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 4034 | |
c906108c | 4035 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 4036 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 4037 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4038 | bl->owner->number); |
c906108c | 4039 | } |
35df4500 TJB |
4040 | else if (bl->owner->type == bp_catchpoint |
4041 | && breakpoint_enabled (bl->owner) | |
4042 | && !bl->duplicate) | |
ce78b96d | 4043 | { |
77b06cd7 TJB |
4044 | gdb_assert (bl->owner->ops != NULL |
4045 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 4046 | |
77b06cd7 | 4047 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
4048 | if (val) |
4049 | return val; | |
77b06cd7 | 4050 | |
35df4500 | 4051 | bl->inserted = (is == mark_inserted); |
ce78b96d | 4052 | } |
c906108c SS |
4053 | |
4054 | return 0; | |
4055 | } | |
4056 | ||
6c95b8df | 4057 | static int |
35df4500 | 4058 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
4059 | { |
4060 | int ret; | |
4061 | struct cleanup *old_chain; | |
4062 | ||
35df4500 TJB |
4063 | /* BL is never in moribund_locations by our callers. */ |
4064 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4065 | |
6c95b8df PA |
4066 | /* The type of none suggests that owner is actually deleted. |
4067 | This should not ever happen. */ | |
35df4500 | 4068 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
4069 | |
4070 | old_chain = save_current_space_and_thread (); | |
4071 | ||
35df4500 | 4072 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4073 | |
35df4500 | 4074 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
4075 | |
4076 | do_cleanups (old_chain); | |
4077 | return ret; | |
4078 | } | |
4079 | ||
c906108c SS |
4080 | /* Clear the "inserted" flag in all breakpoints. */ |
4081 | ||
25b22b0a | 4082 | void |
fba45db2 | 4083 | mark_breakpoints_out (void) |
c906108c | 4084 | { |
35df4500 | 4085 | struct bp_location *bl, **blp_tmp; |
c906108c | 4086 | |
35df4500 | 4087 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 4088 | if (bl->pspace == current_program_space) |
35df4500 | 4089 | bl->inserted = 0; |
c906108c SS |
4090 | } |
4091 | ||
53a5351d JM |
4092 | /* Clear the "inserted" flag in all breakpoints and delete any |
4093 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4094 | |
4095 | Plus other such housekeeping that has to be done for breakpoints | |
4096 | between runs. | |
4097 | ||
53a5351d JM |
4098 | Note: this function gets called at the end of a run (by |
4099 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4100 | init_wait_for_inferior). */ |
c906108c SS |
4101 | |
4102 | ||
4103 | ||
4104 | void | |
fba45db2 | 4105 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4106 | { |
35df4500 TJB |
4107 | struct breakpoint *b, *b_tmp; |
4108 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 4109 | int ix; |
6c95b8df | 4110 | struct program_space *pspace = current_program_space; |
c906108c | 4111 | |
50c71eaf PA |
4112 | /* If breakpoint locations are shared across processes, then there's |
4113 | nothing to do. */ | |
f5656ead | 4114 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4115 | return; |
4116 | ||
1a853c52 | 4117 | mark_breakpoints_out (); |
075f6582 | 4118 | |
35df4500 | 4119 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 4120 | { |
6c95b8df PA |
4121 | if (b->loc && b->loc->pspace != pspace) |
4122 | continue; | |
4123 | ||
c5aa993b JM |
4124 | switch (b->type) |
4125 | { | |
4126 | case bp_call_dummy: | |
e2e4d78b | 4127 | case bp_longjmp_call_dummy: |
c906108c | 4128 | |
c5aa993b | 4129 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
4130 | cause problems when the inferior is rerun, so we better get |
4131 | rid of it. */ | |
4132 | ||
4133 | case bp_watchpoint_scope: | |
4134 | ||
4135 | /* Also get rid of scope breakpoints. */ | |
4136 | ||
4137 | case bp_shlib_event: | |
4138 | ||
4139 | /* Also remove solib event breakpoints. Their addresses may | |
4140 | have changed since the last time we ran the program. | |
4141 | Actually we may now be debugging against different target; | |
4142 | and so the solib backend that installed this breakpoint may | |
4143 | not be used in by the target. E.g., | |
4144 | ||
4145 | (gdb) file prog-linux | |
4146 | (gdb) run # native linux target | |
4147 | ... | |
4148 | (gdb) kill | |
4149 | (gdb) file prog-win.exe | |
4150 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4151 | */ | |
c906108c | 4152 | |
f59f708a PA |
4153 | case bp_step_resume: |
4154 | ||
4155 | /* Also remove step-resume breakpoints. */ | |
4156 | ||
7c16b83e PA |
4157 | case bp_single_step: |
4158 | ||
4159 | /* Also remove single-step breakpoints. */ | |
4160 | ||
c5aa993b JM |
4161 | delete_breakpoint (b); |
4162 | break; | |
c906108c | 4163 | |
c5aa993b JM |
4164 | case bp_watchpoint: |
4165 | case bp_hardware_watchpoint: | |
4166 | case bp_read_watchpoint: | |
4167 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4168 | { |
4169 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4170 | |
3a5c3e22 PA |
4171 | /* Likewise for watchpoints on local expressions. */ |
4172 | if (w->exp_valid_block != NULL) | |
4173 | delete_breakpoint (b); | |
4174 | else if (context == inf_starting) | |
4175 | { | |
4176 | /* Reset val field to force reread of starting value in | |
4177 | insert_breakpoints. */ | |
4178 | if (w->val) | |
4179 | value_free (w->val); | |
4180 | w->val = NULL; | |
4181 | w->val_valid = 0; | |
c860120c | 4182 | } |
3a5c3e22 | 4183 | } |
c5aa993b JM |
4184 | break; |
4185 | default: | |
c5aa993b JM |
4186 | break; |
4187 | } | |
4188 | } | |
1c5cfe86 PA |
4189 | |
4190 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4191 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4192 | decref_bp_location (&bl); | |
1c5cfe86 | 4193 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4194 | } |
4195 | ||
6c95b8df PA |
4196 | /* These functions concern about actual breakpoints inserted in the |
4197 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4198 | we need to hop over the bkpt --- so we check for address space | |
4199 | match, not program space. */ | |
4200 | ||
c2c6d25f JM |
4201 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4202 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4203 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4204 | permanent breakpoint. | |
4205 | - When continuing from a location with an ordinary breakpoint, we | |
4206 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4207 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4208 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4209 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4210 | |
c2c6d25f | 4211 | enum breakpoint_here |
6c95b8df | 4212 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4213 | { |
35df4500 | 4214 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4215 | int any_breakpoint_here = 0; |
c906108c | 4216 | |
35df4500 | 4217 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4218 | { |
35df4500 TJB |
4219 | if (bl->loc_type != bp_loc_software_breakpoint |
4220 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4221 | continue; |
4222 | ||
f1310107 | 4223 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4224 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4225 | || bl->permanent) |
f1310107 | 4226 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4227 | { |
4228 | if (overlay_debugging | |
35df4500 TJB |
4229 | && section_is_overlay (bl->section) |
4230 | && !section_is_mapped (bl->section)) | |
075f6582 | 4231 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4232 | else if (bl->permanent) |
075f6582 DJ |
4233 | return permanent_breakpoint_here; |
4234 | else | |
4235 | any_breakpoint_here = 1; | |
4236 | } | |
4237 | } | |
c906108c | 4238 | |
f486487f | 4239 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4240 | } |
4241 | ||
1c5cfe86 PA |
4242 | /* Return true if there's a moribund breakpoint at PC. */ |
4243 | ||
4244 | int | |
6c95b8df | 4245 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4246 | { |
4247 | struct bp_location *loc; | |
4248 | int ix; | |
4249 | ||
4250 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4251 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4252 | return 1; |
4253 | ||
4254 | return 0; | |
4255 | } | |
c2c6d25f | 4256 | |
f7ce857f PA |
4257 | /* Returns non-zero iff BL is inserted at PC, in address space |
4258 | ASPACE. */ | |
4259 | ||
4260 | static int | |
4261 | bp_location_inserted_here_p (struct bp_location *bl, | |
4262 | struct address_space *aspace, CORE_ADDR pc) | |
4263 | { | |
4264 | if (bl->inserted | |
4265 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4266 | aspace, pc)) | |
4267 | { | |
4268 | if (overlay_debugging | |
4269 | && section_is_overlay (bl->section) | |
4270 | && !section_is_mapped (bl->section)) | |
4271 | return 0; /* unmapped overlay -- can't be a match */ | |
4272 | else | |
4273 | return 1; | |
4274 | } | |
4275 | return 0; | |
4276 | } | |
4277 | ||
a1fd2fa5 | 4278 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4279 | |
4280 | int | |
a1fd2fa5 | 4281 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4282 | { |
f7ce857f PA |
4283 | struct bp_location **blp, **blp_tmp = NULL; |
4284 | struct bp_location *bl; | |
c906108c | 4285 | |
f7ce857f | 4286 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4287 | { |
f7ce857f PA |
4288 | struct bp_location *bl = *blp; |
4289 | ||
35df4500 TJB |
4290 | if (bl->loc_type != bp_loc_software_breakpoint |
4291 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4292 | continue; |
4293 | ||
f7ce857f PA |
4294 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4295 | return 1; | |
c5aa993b | 4296 | } |
c36b740a VP |
4297 | return 0; |
4298 | } | |
4299 | ||
a1fd2fa5 PA |
4300 | /* This function returns non-zero iff there is a software breakpoint |
4301 | inserted at PC. */ | |
c36b740a VP |
4302 | |
4303 | int | |
a1fd2fa5 PA |
4304 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
4305 | CORE_ADDR pc) | |
4fa8626c | 4306 | { |
f7ce857f PA |
4307 | struct bp_location **blp, **blp_tmp = NULL; |
4308 | struct bp_location *bl; | |
4fa8626c | 4309 | |
f7ce857f | 4310 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4311 | { |
f7ce857f PA |
4312 | struct bp_location *bl = *blp; |
4313 | ||
35df4500 | 4314 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4315 | continue; |
4316 | ||
f7ce857f PA |
4317 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4318 | return 1; | |
4fa8626c DJ |
4319 | } |
4320 | ||
4321 | return 0; | |
9c02b525 PA |
4322 | } |
4323 | ||
4324 | /* See breakpoint.h. */ | |
4325 | ||
4326 | int | |
4327 | hardware_breakpoint_inserted_here_p (struct address_space *aspace, | |
4328 | CORE_ADDR pc) | |
4329 | { | |
4330 | struct bp_location **blp, **blp_tmp = NULL; | |
4331 | struct bp_location *bl; | |
4332 | ||
4333 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4334 | { | |
4335 | struct bp_location *bl = *blp; | |
4336 | ||
4337 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4338 | continue; | |
4339 | ||
4340 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4341 | return 1; | |
4342 | } | |
4343 | ||
4344 | return 0; | |
4fa8626c DJ |
4345 | } |
4346 | ||
9093389c PA |
4347 | int |
4348 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4349 | CORE_ADDR addr, ULONGEST len) | |
4350 | { | |
4351 | struct breakpoint *bpt; | |
4352 | ||
4353 | ALL_BREAKPOINTS (bpt) | |
4354 | { | |
4355 | struct bp_location *loc; | |
4356 | ||
4357 | if (bpt->type != bp_hardware_watchpoint | |
4358 | && bpt->type != bp_access_watchpoint) | |
4359 | continue; | |
4360 | ||
4361 | if (!breakpoint_enabled (bpt)) | |
4362 | continue; | |
4363 | ||
4364 | for (loc = bpt->loc; loc; loc = loc->next) | |
4365 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4366 | { | |
4367 | CORE_ADDR l, h; | |
4368 | ||
4369 | /* Check for intersection. */ | |
4370 | l = max (loc->address, addr); | |
4371 | h = min (loc->address + loc->length, addr + len); | |
4372 | if (l < h) | |
4373 | return 1; | |
4374 | } | |
4375 | } | |
4376 | return 0; | |
4377 | } | |
c906108c | 4378 | \f |
c5aa993b | 4379 | |
c906108c SS |
4380 | /* bpstat stuff. External routines' interfaces are documented |
4381 | in breakpoint.h. */ | |
4382 | ||
4383 | int | |
c326b90e | 4384 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4385 | { |
533be4dd | 4386 | return (ep->type == bp_catchpoint); |
c906108c SS |
4387 | } |
4388 | ||
f431efe5 PA |
4389 | /* Frees any storage that is part of a bpstat. Does not walk the |
4390 | 'next' chain. */ | |
4391 | ||
4392 | static void | |
198757a8 VP |
4393 | bpstat_free (bpstat bs) |
4394 | { | |
4395 | if (bs->old_val != NULL) | |
4396 | value_free (bs->old_val); | |
9add0f1b | 4397 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4398 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4399 | xfree (bs); |
4400 | } | |
4401 | ||
c906108c SS |
4402 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4403 | Also free any storage that is part of a bpstat. */ | |
4404 | ||
4405 | void | |
fba45db2 | 4406 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4407 | { |
4408 | bpstat p; | |
4409 | bpstat q; | |
4410 | ||
4411 | if (bsp == 0) | |
4412 | return; | |
4413 | p = *bsp; | |
4414 | while (p != NULL) | |
4415 | { | |
4416 | q = p->next; | |
198757a8 | 4417 | bpstat_free (p); |
c906108c SS |
4418 | p = q; |
4419 | } | |
4420 | *bsp = NULL; | |
4421 | } | |
4422 | ||
4423 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4424 | is part of the bpstat is copied as well. */ | |
4425 | ||
4426 | bpstat | |
fba45db2 | 4427 | bpstat_copy (bpstat bs) |
c906108c SS |
4428 | { |
4429 | bpstat p = NULL; | |
4430 | bpstat tmp; | |
4431 | bpstat retval = NULL; | |
4432 | ||
4433 | if (bs == NULL) | |
4434 | return bs; | |
4435 | ||
4436 | for (; bs != NULL; bs = bs->next) | |
4437 | { | |
4438 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4439 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4440 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4441 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4442 | if (bs->old_val != NULL) |
3c3185ac JK |
4443 | { |
4444 | tmp->old_val = value_copy (bs->old_val); | |
4445 | release_value (tmp->old_val); | |
4446 | } | |
31cc81e9 | 4447 | |
c906108c SS |
4448 | if (p == NULL) |
4449 | /* This is the first thing in the chain. */ | |
4450 | retval = tmp; | |
4451 | else | |
4452 | p->next = tmp; | |
4453 | p = tmp; | |
4454 | } | |
4455 | p->next = NULL; | |
4456 | return retval; | |
4457 | } | |
4458 | ||
4a64f543 | 4459 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4460 | |
4461 | bpstat | |
fba45db2 | 4462 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4463 | { |
c5aa993b JM |
4464 | if (bsp == NULL) |
4465 | return NULL; | |
c906108c | 4466 | |
c5aa993b JM |
4467 | for (; bsp != NULL; bsp = bsp->next) |
4468 | { | |
f431efe5 | 4469 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4470 | return bsp; |
4471 | } | |
c906108c SS |
4472 | return NULL; |
4473 | } | |
4474 | ||
ab04a2af TT |
4475 | /* See breakpoint.h. */ |
4476 | ||
47591c29 | 4477 | int |
427cd150 | 4478 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4479 | { |
ab04a2af TT |
4480 | for (; bsp != NULL; bsp = bsp->next) |
4481 | { | |
427cd150 TT |
4482 | if (bsp->breakpoint_at == NULL) |
4483 | { | |
4484 | /* A moribund location can never explain a signal other than | |
4485 | GDB_SIGNAL_TRAP. */ | |
4486 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4487 | return 1; |
427cd150 TT |
4488 | } |
4489 | else | |
47591c29 PA |
4490 | { |
4491 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4492 | sig)) | |
4493 | return 1; | |
4494 | } | |
ab04a2af TT |
4495 | } |
4496 | ||
47591c29 | 4497 | return 0; |
ab04a2af TT |
4498 | } |
4499 | ||
4a64f543 MS |
4500 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4501 | stopped at. *BSP upon return is a bpstat which points to the | |
4502 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4503 | good for anything but further calls to bpstat_num). | |
4504 | ||
8671a17b PA |
4505 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4506 | Return -1 if stopped at a breakpoint that has been deleted since | |
4507 | we set it. | |
4508 | Return 1 otherwise. */ | |
c906108c SS |
4509 | |
4510 | int | |
8671a17b | 4511 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4512 | { |
4513 | struct breakpoint *b; | |
4514 | ||
4515 | if ((*bsp) == NULL) | |
4516 | return 0; /* No more breakpoint values */ | |
8671a17b | 4517 | |
4a64f543 MS |
4518 | /* We assume we'll never have several bpstats that correspond to a |
4519 | single breakpoint -- otherwise, this function might return the | |
4520 | same number more than once and this will look ugly. */ | |
f431efe5 | 4521 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4522 | *bsp = (*bsp)->next; |
4523 | if (b == NULL) | |
4524 | return -1; /* breakpoint that's been deleted since */ | |
4525 | ||
4526 | *num = b->number; /* We have its number */ | |
4527 | return 1; | |
c906108c SS |
4528 | } |
4529 | ||
e93ca019 | 4530 | /* See breakpoint.h. */ |
c906108c SS |
4531 | |
4532 | void | |
e93ca019 | 4533 | bpstat_clear_actions (void) |
c906108c | 4534 | { |
e93ca019 JK |
4535 | struct thread_info *tp; |
4536 | bpstat bs; | |
4537 | ||
4538 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4539 | return; | |
4540 | ||
4541 | tp = find_thread_ptid (inferior_ptid); | |
4542 | if (tp == NULL) | |
4543 | return; | |
4544 | ||
4545 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4546 | { |
9add0f1b | 4547 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4548 | |
c906108c SS |
4549 | if (bs->old_val != NULL) |
4550 | { | |
4551 | value_free (bs->old_val); | |
4552 | bs->old_val = NULL; | |
4553 | } | |
4554 | } | |
4555 | } | |
4556 | ||
f3b1572e PA |
4557 | /* Called when a command is about to proceed the inferior. */ |
4558 | ||
4559 | static void | |
4560 | breakpoint_about_to_proceed (void) | |
4561 | { | |
4562 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4563 | { | |
4564 | struct thread_info *tp = inferior_thread (); | |
4565 | ||
4566 | /* Allow inferior function calls in breakpoint commands to not | |
4567 | interrupt the command list. When the call finishes | |
4568 | successfully, the inferior will be standing at the same | |
4569 | breakpoint as if nothing happened. */ | |
16c381f0 | 4570 | if (tp->control.in_infcall) |
f3b1572e PA |
4571 | return; |
4572 | } | |
4573 | ||
4574 | breakpoint_proceeded = 1; | |
4575 | } | |
4576 | ||
4a64f543 MS |
4577 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4578 | command. */ | |
c906108c | 4579 | static void |
4efb68b1 | 4580 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4581 | { |
4582 | executing_breakpoint_commands = 0; | |
4583 | } | |
4584 | ||
abf85f46 JK |
4585 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4586 | or its equivalent. */ | |
4587 | ||
4588 | static int | |
4589 | command_line_is_silent (struct command_line *cmd) | |
4590 | { | |
4f45d445 | 4591 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4592 | } |
4593 | ||
4a64f543 MS |
4594 | /* Execute all the commands associated with all the breakpoints at |
4595 | this location. Any of these commands could cause the process to | |
4596 | proceed beyond this point, etc. We look out for such changes by | |
4597 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4598 | |
347bddb7 PA |
4599 | Returns true if a breakpoint command resumed the inferior. In that |
4600 | case, it is the caller's responsibility to recall it again with the | |
4601 | bpstat of the current thread. */ | |
4602 | ||
4603 | static int | |
4604 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4605 | { |
4606 | bpstat bs; | |
4607 | struct cleanup *old_chain; | |
347bddb7 | 4608 | int again = 0; |
c906108c SS |
4609 | |
4610 | /* Avoid endless recursion if a `source' command is contained | |
4611 | in bs->commands. */ | |
4612 | if (executing_breakpoint_commands) | |
347bddb7 | 4613 | return 0; |
c906108c SS |
4614 | |
4615 | executing_breakpoint_commands = 1; | |
4616 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4617 | ||
cf6c5ffb TT |
4618 | prevent_dont_repeat (); |
4619 | ||
4a64f543 | 4620 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4621 | bs = *bsp; |
4622 | ||
4623 | breakpoint_proceeded = 0; | |
4624 | for (; bs != NULL; bs = bs->next) | |
4625 | { | |
9add0f1b | 4626 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4627 | struct command_line *cmd; |
4628 | struct cleanup *this_cmd_tree_chain; | |
4629 | ||
4630 | /* Take ownership of the BSP's command tree, if it has one. | |
4631 | ||
4632 | The command tree could legitimately contain commands like | |
4633 | 'step' and 'next', which call clear_proceed_status, which | |
4634 | frees stop_bpstat's command tree. To make sure this doesn't | |
4635 | free the tree we're executing out from under us, we need to | |
4636 | take ownership of the tree ourselves. Since a given bpstat's | |
4637 | commands are only executed once, we don't need to copy it; we | |
4638 | can clear the pointer in the bpstat, and make sure we free | |
4639 | the tree when we're done. */ | |
9add0f1b TT |
4640 | ccmd = bs->commands; |
4641 | bs->commands = NULL; | |
abf85f46 JK |
4642 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4643 | cmd = ccmd ? ccmd->commands : NULL; | |
4644 | if (command_line_is_silent (cmd)) | |
4645 | { | |
4646 | /* The action has been already done by bpstat_stop_status. */ | |
4647 | cmd = cmd->next; | |
4648 | } | |
6c50ab1c | 4649 | |
c906108c SS |
4650 | while (cmd != NULL) |
4651 | { | |
4652 | execute_control_command (cmd); | |
4653 | ||
4654 | if (breakpoint_proceeded) | |
4655 | break; | |
4656 | else | |
4657 | cmd = cmd->next; | |
4658 | } | |
6c50ab1c JB |
4659 | |
4660 | /* We can free this command tree now. */ | |
4661 | do_cleanups (this_cmd_tree_chain); | |
4662 | ||
c906108c | 4663 | if (breakpoint_proceeded) |
32c1e744 | 4664 | { |
5589af0e | 4665 | if (interpreter_async && target_can_async_p ()) |
347bddb7 PA |
4666 | /* If we are in async mode, then the target might be still |
4667 | running, not stopped at any breakpoint, so nothing for | |
4668 | us to do here -- just return to the event loop. */ | |
4669 | ; | |
32c1e744 VP |
4670 | else |
4671 | /* In sync mode, when execute_control_command returns | |
4672 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4673 | Breakpoint commands for that stop were not run, since |
4674 | execute_command does not run breakpoint commands -- | |
4675 | only command_line_handler does, but that one is not | |
4676 | involved in execution of breakpoint commands. So, we | |
4677 | can now execute breakpoint commands. It should be | |
4678 | noted that making execute_command do bpstat actions is | |
4679 | not an option -- in this case we'll have recursive | |
4680 | invocation of bpstat for each breakpoint with a | |
4681 | command, and can easily blow up GDB stack. Instead, we | |
4682 | return true, which will trigger the caller to recall us | |
4683 | with the new stop_bpstat. */ | |
4684 | again = 1; | |
4685 | break; | |
32c1e744 | 4686 | } |
c906108c | 4687 | } |
c2b8ed2c | 4688 | do_cleanups (old_chain); |
347bddb7 PA |
4689 | return again; |
4690 | } | |
4691 | ||
4692 | void | |
4693 | bpstat_do_actions (void) | |
4694 | { | |
353d1d73 JK |
4695 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4696 | ||
347bddb7 PA |
4697 | /* Do any commands attached to breakpoint we are stopped at. */ |
4698 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4699 | && target_has_execution | |
4700 | && !is_exited (inferior_ptid) | |
4701 | && !is_executing (inferior_ptid)) | |
4702 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4703 | and only return when it is stopped at the next breakpoint, we | |
4704 | keep doing breakpoint actions until it returns false to | |
4705 | indicate the inferior was not resumed. */ | |
16c381f0 | 4706 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4707 | break; |
353d1d73 JK |
4708 | |
4709 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4710 | } |
4711 | ||
fa4727a6 DJ |
4712 | /* Print out the (old or new) value associated with a watchpoint. */ |
4713 | ||
4714 | static void | |
4715 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4716 | { | |
4717 | if (val == NULL) | |
4718 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4719 | else | |
79a45b7d TT |
4720 | { |
4721 | struct value_print_options opts; | |
4722 | get_user_print_options (&opts); | |
4723 | value_print (val, stream, &opts); | |
4724 | } | |
fa4727a6 DJ |
4725 | } |
4726 | ||
e514a9d6 | 4727 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4728 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4729 | 'print_it' in the bpstat structure. Under some circumstances we |
4730 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4731 | normal_stop(). */ |
e514a9d6 JM |
4732 | |
4733 | static enum print_stop_action | |
4734 | print_bp_stop_message (bpstat bs) | |
4735 | { | |
4736 | switch (bs->print_it) | |
4737 | { | |
4738 | case print_it_noop: | |
4a64f543 | 4739 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4740 | return PRINT_UNKNOWN; |
4741 | break; | |
4742 | ||
4743 | case print_it_done: | |
4744 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4745 | relevant messages. */ |
e514a9d6 JM |
4746 | return PRINT_SRC_AND_LOC; |
4747 | break; | |
4748 | ||
4749 | case print_it_normal: | |
4f8d1dc6 | 4750 | { |
f431efe5 PA |
4751 | struct breakpoint *b = bs->breakpoint_at; |
4752 | ||
1a6a67de TJB |
4753 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4754 | which has since been deleted. */ | |
4755 | if (b == NULL) | |
4756 | return PRINT_UNKNOWN; | |
4757 | ||
348d480f PA |
4758 | /* Normal case. Call the breakpoint's print_it method. */ |
4759 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4760 | } |
348d480f | 4761 | break; |
3086aeae | 4762 | |
e514a9d6 | 4763 | default: |
8e65ff28 | 4764 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4765 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4766 | break; |
c906108c | 4767 | } |
c906108c SS |
4768 | } |
4769 | ||
edcc5120 TT |
4770 | /* A helper function that prints a shared library stopped event. */ |
4771 | ||
4772 | static void | |
4773 | print_solib_event (int is_catchpoint) | |
4774 | { | |
4775 | int any_deleted | |
4776 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4777 | int any_added | |
4778 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4779 | ||
4780 | if (!is_catchpoint) | |
4781 | { | |
4782 | if (any_added || any_deleted) | |
4783 | ui_out_text (current_uiout, | |
4784 | _("Stopped due to shared library event:\n")); | |
4785 | else | |
4786 | ui_out_text (current_uiout, | |
4787 | _("Stopped due to shared library event (no " | |
4788 | "libraries added or removed)\n")); | |
4789 | } | |
4790 | ||
4791 | if (ui_out_is_mi_like_p (current_uiout)) | |
4792 | ui_out_field_string (current_uiout, "reason", | |
4793 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4794 | ||
4795 | if (any_deleted) | |
4796 | { | |
4797 | struct cleanup *cleanup; | |
4798 | char *name; | |
4799 | int ix; | |
4800 | ||
4801 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4802 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4803 | "removed"); | |
4804 | for (ix = 0; | |
4805 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4806 | ix, name); | |
4807 | ++ix) | |
4808 | { | |
4809 | if (ix > 0) | |
4810 | ui_out_text (current_uiout, " "); | |
4811 | ui_out_field_string (current_uiout, "library", name); | |
4812 | ui_out_text (current_uiout, "\n"); | |
4813 | } | |
4814 | ||
4815 | do_cleanups (cleanup); | |
4816 | } | |
4817 | ||
4818 | if (any_added) | |
4819 | { | |
4820 | struct so_list *iter; | |
4821 | int ix; | |
4822 | struct cleanup *cleanup; | |
4823 | ||
4824 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4825 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4826 | "added"); | |
4827 | for (ix = 0; | |
4828 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4829 | ix, iter); | |
4830 | ++ix) | |
4831 | { | |
4832 | if (ix > 0) | |
4833 | ui_out_text (current_uiout, " "); | |
4834 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4835 | ui_out_text (current_uiout, "\n"); | |
4836 | } | |
4837 | ||
4838 | do_cleanups (cleanup); | |
4839 | } | |
4840 | } | |
4841 | ||
e514a9d6 JM |
4842 | /* Print a message indicating what happened. This is called from |
4843 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4844 | list - a list of the eventpoints that caused this stop. KIND is |
4845 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4846 | routine calls the generic print routine for printing a message |
4847 | about reasons for stopping. This will print (for example) the | |
4848 | "Breakpoint n," part of the output. The return value of this | |
4849 | routine is one of: | |
c906108c | 4850 | |
4a64f543 | 4851 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4852 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4853 | code to print the location. An example is |
c5aa993b JM |
4854 | "Breakpoint 1, " which should be followed by |
4855 | the location. | |
917317f4 | 4856 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4857 | to also print the location part of the message. |
4858 | An example is the catch/throw messages, which | |
4a64f543 | 4859 | don't require a location appended to the end. |
917317f4 | 4860 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4861 | further info to be printed. */ |
c906108c | 4862 | |
917317f4 | 4863 | enum print_stop_action |
36dfb11c | 4864 | bpstat_print (bpstat bs, int kind) |
c906108c | 4865 | { |
f486487f | 4866 | enum print_stop_action val; |
c5aa993b | 4867 | |
c906108c | 4868 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4869 | (Currently all watchpoints go on the bpstat whether hit or not. |
4870 | That probably could (should) be changed, provided care is taken | |
c906108c | 4871 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4872 | for (; bs; bs = bs->next) |
4873 | { | |
4874 | val = print_bp_stop_message (bs); | |
4875 | if (val == PRINT_SRC_ONLY | |
4876 | || val == PRINT_SRC_AND_LOC | |
4877 | || val == PRINT_NOTHING) | |
4878 | return val; | |
4879 | } | |
c906108c | 4880 | |
36dfb11c TT |
4881 | /* If we had hit a shared library event breakpoint, |
4882 | print_bp_stop_message would print out this message. If we hit an | |
4883 | OS-level shared library event, do the same thing. */ | |
4884 | if (kind == TARGET_WAITKIND_LOADED) | |
4885 | { | |
edcc5120 | 4886 | print_solib_event (0); |
36dfb11c TT |
4887 | return PRINT_NOTHING; |
4888 | } | |
4889 | ||
e514a9d6 | 4890 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4891 | with and nothing was printed. */ |
917317f4 | 4892 | return PRINT_UNKNOWN; |
c906108c SS |
4893 | } |
4894 | ||
c42bd95a DE |
4895 | /* Evaluate the expression EXP and return 1 if value is zero. |
4896 | This returns the inverse of the condition because it is called | |
4897 | from catch_errors which returns 0 if an exception happened, and if an | |
4898 | exception happens we want execution to stop. | |
4a64f543 | 4899 | The argument is a "struct expression *" that has been cast to a |
c42bd95a | 4900 | "void *" to make it pass through catch_errors. */ |
c906108c SS |
4901 | |
4902 | static int | |
4efb68b1 | 4903 | breakpoint_cond_eval (void *exp) |
c906108c | 4904 | { |
278cd55f | 4905 | struct value *mark = value_mark (); |
c5aa993b | 4906 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4907 | |
c906108c SS |
4908 | value_free_to_mark (mark); |
4909 | return i; | |
4910 | } | |
4911 | ||
5760d0ab | 4912 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4913 | |
4914 | static bpstat | |
5760d0ab | 4915 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4916 | { |
4917 | bpstat bs; | |
4918 | ||
4919 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4920 | bs->next = NULL; |
4921 | **bs_link_pointer = bs; | |
4922 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4923 | bs->breakpoint_at = bl->owner; |
4924 | bs->bp_location_at = bl; | |
4925 | incref_bp_location (bl); | |
c906108c SS |
4926 | /* If the condition is false, etc., don't do the commands. */ |
4927 | bs->commands = NULL; | |
4928 | bs->old_val = NULL; | |
4929 | bs->print_it = print_it_normal; | |
4930 | return bs; | |
4931 | } | |
4932 | \f | |
d983da9c DJ |
4933 | /* The target has stopped with waitstatus WS. Check if any hardware |
4934 | watchpoints have triggered, according to the target. */ | |
4935 | ||
4936 | int | |
4937 | watchpoints_triggered (struct target_waitstatus *ws) | |
4938 | { | |
d92524f1 | 4939 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4940 | CORE_ADDR addr; |
4941 | struct breakpoint *b; | |
4942 | ||
4943 | if (!stopped_by_watchpoint) | |
4944 | { | |
4945 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4946 | as not triggered. */ | |
4947 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4948 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4949 | { |
4950 | struct watchpoint *w = (struct watchpoint *) b; | |
4951 | ||
4952 | w->watchpoint_triggered = watch_triggered_no; | |
4953 | } | |
d983da9c DJ |
4954 | |
4955 | return 0; | |
4956 | } | |
4957 | ||
4958 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4959 | { | |
4960 | /* We were stopped by a watchpoint, but we don't know where. | |
4961 | Mark all watchpoints as unknown. */ | |
4962 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4963 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4964 | { |
4965 | struct watchpoint *w = (struct watchpoint *) b; | |
4966 | ||
4967 | w->watchpoint_triggered = watch_triggered_unknown; | |
4968 | } | |
d983da9c | 4969 | |
3c4797ba | 4970 | return 1; |
d983da9c DJ |
4971 | } |
4972 | ||
4973 | /* The target could report the data address. Mark watchpoints | |
4974 | affected by this data address as triggered, and all others as not | |
4975 | triggered. */ | |
4976 | ||
4977 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4978 | if (is_hardware_watchpoint (b)) |
d983da9c | 4979 | { |
3a5c3e22 | 4980 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4981 | struct bp_location *loc; |
d983da9c | 4982 | |
3a5c3e22 | 4983 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4984 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4985 | { |
3a5c3e22 | 4986 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4987 | { |
3a5c3e22 PA |
4988 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4989 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4990 | |
4991 | if (newaddr == start) | |
4992 | { | |
3a5c3e22 | 4993 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4994 | break; |
4995 | } | |
4996 | } | |
4997 | /* Exact match not required. Within range is sufficient. */ | |
4998 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4999 | addr, loc->address, | |
5000 | loc->length)) | |
5001 | { | |
3a5c3e22 | 5002 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5003 | break; |
5004 | } | |
5005 | } | |
d983da9c DJ |
5006 | } |
5007 | ||
5008 | return 1; | |
5009 | } | |
5010 | ||
c906108c SS |
5011 | /* Possible return values for watchpoint_check (this can't be an enum |
5012 | because of check_errors). */ | |
5013 | /* The watchpoint has been deleted. */ | |
5014 | #define WP_DELETED 1 | |
5015 | /* The value has changed. */ | |
5016 | #define WP_VALUE_CHANGED 2 | |
5017 | /* The value has not changed. */ | |
5018 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
5019 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
5020 | #define WP_IGNORE 4 | |
c906108c SS |
5021 | |
5022 | #define BP_TEMPFLAG 1 | |
5023 | #define BP_HARDWAREFLAG 2 | |
5024 | ||
4a64f543 MS |
5025 | /* Evaluate watchpoint condition expression and check if its value |
5026 | changed. | |
553e4c11 JB |
5027 | |
5028 | P should be a pointer to struct bpstat, but is defined as a void * | |
5029 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
5030 | |
5031 | static int | |
4efb68b1 | 5032 | watchpoint_check (void *p) |
c906108c SS |
5033 | { |
5034 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 5035 | struct watchpoint *b; |
c906108c SS |
5036 | struct frame_info *fr; |
5037 | int within_current_scope; | |
5038 | ||
f431efe5 | 5039 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 5040 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 5041 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5042 | |
f6bc2008 PA |
5043 | /* If this is a local watchpoint, we only want to check if the |
5044 | watchpoint frame is in scope if the current thread is the thread | |
5045 | that was used to create the watchpoint. */ | |
5046 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5047 | return WP_IGNORE; |
f6bc2008 | 5048 | |
c906108c SS |
5049 | if (b->exp_valid_block == NULL) |
5050 | within_current_scope = 1; | |
5051 | else | |
5052 | { | |
edb3359d DJ |
5053 | struct frame_info *frame = get_current_frame (); |
5054 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
5055 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5056 | ||
c9cf6e20 | 5057 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5058 | still in the function but the stack frame has already been |
5059 | invalidated. Since we can't rely on the values of local | |
5060 | variables after the stack has been destroyed, we are treating | |
5061 | the watchpoint in that state as `not changed' without further | |
5062 | checking. Don't mark watchpoints as changed if the current | |
5063 | frame is in an epilogue - even if they are in some other | |
5064 | frame, our view of the stack is likely to be wrong and | |
5065 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5066 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5067 | return WP_IGNORE; |
a0f49112 | 5068 | |
101dcfbe | 5069 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5070 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5071 | |
5072 | /* If we've gotten confused in the unwinder, we might have | |
5073 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5074 | if (within_current_scope) |
5075 | { | |
5076 | struct symbol *function; | |
5077 | ||
5078 | function = get_frame_function (fr); | |
5079 | if (function == NULL | |
5080 | || !contained_in (b->exp_valid_block, | |
5081 | SYMBOL_BLOCK_VALUE (function))) | |
5082 | within_current_scope = 0; | |
5083 | } | |
69fbadd5 | 5084 | |
edb3359d | 5085 | if (within_current_scope) |
c906108c SS |
5086 | /* If we end up stopping, the current frame will get selected |
5087 | in normal_stop. So this call to select_frame won't affect | |
5088 | the user. */ | |
0f7d239c | 5089 | select_frame (fr); |
c906108c | 5090 | } |
c5aa993b | 5091 | |
c906108c SS |
5092 | if (within_current_scope) |
5093 | { | |
4a64f543 MS |
5094 | /* We use value_{,free_to_}mark because it could be a *long* |
5095 | time before we return to the command level and call | |
5096 | free_all_values. We can't call free_all_values because we | |
5097 | might be in the middle of evaluating a function call. */ | |
c906108c | 5098 | |
0cf6dd15 | 5099 | int pc = 0; |
9c06b0b4 | 5100 | struct value *mark; |
fa4727a6 DJ |
5101 | struct value *new_val; |
5102 | ||
3a5c3e22 | 5103 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
5104 | /* Since we don't know the exact trigger address (from |
5105 | stopped_data_address), just tell the user we've triggered | |
5106 | a mask watchpoint. */ | |
5107 | return WP_VALUE_CHANGED; | |
5108 | ||
5109 | mark = value_mark (); | |
3a1115a0 | 5110 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 5111 | |
bb9d5f81 PP |
5112 | if (b->val_bitsize != 0) |
5113 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5114 | ||
4a64f543 MS |
5115 | /* We use value_equal_contents instead of value_equal because |
5116 | the latter coerces an array to a pointer, thus comparing just | |
5117 | the address of the array instead of its contents. This is | |
5118 | not what we want. */ | |
fa4727a6 | 5119 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 5120 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 5121 | { |
fa4727a6 DJ |
5122 | if (new_val != NULL) |
5123 | { | |
5124 | release_value (new_val); | |
5125 | value_free_to_mark (mark); | |
5126 | } | |
c906108c SS |
5127 | bs->old_val = b->val; |
5128 | b->val = new_val; | |
fa4727a6 | 5129 | b->val_valid = 1; |
c906108c SS |
5130 | return WP_VALUE_CHANGED; |
5131 | } | |
5132 | else | |
5133 | { | |
60e1c644 | 5134 | /* Nothing changed. */ |
c906108c | 5135 | value_free_to_mark (mark); |
c906108c SS |
5136 | return WP_VALUE_NOT_CHANGED; |
5137 | } | |
5138 | } | |
5139 | else | |
5140 | { | |
79a45e25 PA |
5141 | struct ui_out *uiout = current_uiout; |
5142 | ||
c906108c | 5143 | /* This seems like the only logical thing to do because |
c5aa993b JM |
5144 | if we temporarily ignored the watchpoint, then when |
5145 | we reenter the block in which it is valid it contains | |
5146 | garbage (in the case of a function, it may have two | |
5147 | garbage values, one before and one after the prologue). | |
5148 | So we can't even detect the first assignment to it and | |
5149 | watch after that (since the garbage may or may not equal | |
5150 | the first value assigned). */ | |
348d480f PA |
5151 | /* We print all the stop information in |
5152 | breakpoint_ops->print_it, but in this case, by the time we | |
5153 | call breakpoint_ops->print_it this bp will be deleted | |
5154 | already. So we have no choice but print the information | |
5155 | here. */ | |
9dc5e2a9 | 5156 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
5157 | ui_out_field_string |
5158 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 5159 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 5160 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
5161 | ui_out_text (uiout, |
5162 | " deleted because the program has left the block in\n\ | |
8b93c638 | 5163 | which its expression is valid.\n"); |
4ce44c66 | 5164 | |
cdac0397 | 5165 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 5166 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 5167 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5168 | |
5169 | return WP_DELETED; | |
5170 | } | |
5171 | } | |
5172 | ||
18a18393 | 5173 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5174 | breakpoint location BL. This function does not check if we should |
5175 | stop, only if BL explains the stop. */ | |
5176 | ||
18a18393 | 5177 | static int |
6c95b8df | 5178 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5179 | struct address_space *aspace, CORE_ADDR bp_addr, |
5180 | const struct target_waitstatus *ws) | |
18a18393 VP |
5181 | { |
5182 | struct breakpoint *b = bl->owner; | |
5183 | ||
348d480f | 5184 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5185 | gdb_assert (b != NULL); |
5186 | ||
09ac7c10 | 5187 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5188 | } |
5189 | ||
3a5c3e22 PA |
5190 | /* Determine if the watched values have actually changed, and we |
5191 | should stop. If not, set BS->stop to 0. */ | |
5192 | ||
18a18393 VP |
5193 | static void |
5194 | bpstat_check_watchpoint (bpstat bs) | |
5195 | { | |
2bdf28a0 | 5196 | const struct bp_location *bl; |
3a5c3e22 | 5197 | struct watchpoint *b; |
2bdf28a0 JK |
5198 | |
5199 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5200 | bl = bs->bp_location_at; |
2bdf28a0 | 5201 | gdb_assert (bl != NULL); |
3a5c3e22 | 5202 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5203 | gdb_assert (b != NULL); |
18a18393 | 5204 | |
18a18393 | 5205 | { |
18a18393 VP |
5206 | int must_check_value = 0; |
5207 | ||
3a5c3e22 | 5208 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
5209 | /* For a software watchpoint, we must always check the |
5210 | watched value. */ | |
5211 | must_check_value = 1; | |
5212 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5213 | /* We have a hardware watchpoint (read, write, or access) | |
5214 | and the target earlier reported an address watched by | |
5215 | this watchpoint. */ | |
5216 | must_check_value = 1; | |
5217 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 5218 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
5219 | /* We were stopped by a hardware watchpoint, but the target could |
5220 | not report the data address. We must check the watchpoint's | |
5221 | value. Access and read watchpoints are out of luck; without | |
5222 | a data address, we can't figure it out. */ | |
5223 | must_check_value = 1; | |
3a5c3e22 | 5224 | |
18a18393 VP |
5225 | if (must_check_value) |
5226 | { | |
3e43a32a MS |
5227 | char *message |
5228 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 5229 | b->base.number); |
18a18393 VP |
5230 | struct cleanup *cleanups = make_cleanup (xfree, message); |
5231 | int e = catch_errors (watchpoint_check, bs, message, | |
5232 | RETURN_MASK_ALL); | |
5233 | do_cleanups (cleanups); | |
5234 | switch (e) | |
5235 | { | |
5236 | case WP_DELETED: | |
5237 | /* We've already printed what needs to be printed. */ | |
5238 | bs->print_it = print_it_done; | |
5239 | /* Stop. */ | |
5240 | break; | |
60e1c644 PA |
5241 | case WP_IGNORE: |
5242 | bs->print_it = print_it_noop; | |
5243 | bs->stop = 0; | |
5244 | break; | |
18a18393 | 5245 | case WP_VALUE_CHANGED: |
3a5c3e22 | 5246 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 5247 | { |
85d721b8 PA |
5248 | /* There are two cases to consider here: |
5249 | ||
4a64f543 | 5250 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5251 | In that case, trust the target, and always report |
5252 | the watchpoint hit to the user. Even though | |
5253 | reads don't cause value changes, the value may | |
5254 | have changed since the last time it was read, and | |
5255 | since we're not trapping writes, we will not see | |
5256 | those, and as such we should ignore our notion of | |
5257 | old value. | |
5258 | ||
4a64f543 | 5259 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5260 | reads and writes. There are two ways this may |
5261 | happen: | |
5262 | ||
4a64f543 | 5263 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5264 | reads only, but can break on accesses (reads or |
5265 | writes), such as e.g., x86. We detect this case | |
5266 | at the time we try to insert read watchpoints. | |
5267 | ||
4a64f543 | 5268 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5269 | watchpoints, but, the user set an access or write |
5270 | watchpoint watching the same memory as this read | |
5271 | watchpoint. | |
5272 | ||
5273 | If we're watching memory writes as well as reads, | |
5274 | ignore watchpoint hits when we find that the | |
5275 | value hasn't changed, as reads don't cause | |
5276 | changes. This still gives false positives when | |
5277 | the program writes the same value to memory as | |
5278 | what there was already in memory (we will confuse | |
5279 | it for a read), but it's much better than | |
5280 | nothing. */ | |
5281 | ||
5282 | int other_write_watchpoint = 0; | |
5283 | ||
5284 | if (bl->watchpoint_type == hw_read) | |
5285 | { | |
5286 | struct breakpoint *other_b; | |
5287 | ||
5288 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5289 | if (other_b->type == bp_hardware_watchpoint |
5290 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5291 | { |
3a5c3e22 PA |
5292 | struct watchpoint *other_w = |
5293 | (struct watchpoint *) other_b; | |
5294 | ||
5295 | if (other_w->watchpoint_triggered | |
5296 | == watch_triggered_yes) | |
5297 | { | |
5298 | other_write_watchpoint = 1; | |
5299 | break; | |
5300 | } | |
85d721b8 PA |
5301 | } |
5302 | } | |
5303 | ||
5304 | if (other_write_watchpoint | |
5305 | || bl->watchpoint_type == hw_access) | |
5306 | { | |
5307 | /* We're watching the same memory for writes, | |
5308 | and the value changed since the last time we | |
5309 | updated it, so this trap must be for a write. | |
5310 | Ignore it. */ | |
5311 | bs->print_it = print_it_noop; | |
5312 | bs->stop = 0; | |
5313 | } | |
18a18393 VP |
5314 | } |
5315 | break; | |
5316 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
5317 | if (b->base.type == bp_hardware_watchpoint |
5318 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
5319 | { |
5320 | /* Don't stop: write watchpoints shouldn't fire if | |
5321 | the value hasn't changed. */ | |
5322 | bs->print_it = print_it_noop; | |
5323 | bs->stop = 0; | |
5324 | } | |
5325 | /* Stop. */ | |
5326 | break; | |
5327 | default: | |
5328 | /* Can't happen. */ | |
5329 | case 0: | |
5330 | /* Error from catch_errors. */ | |
3a5c3e22 | 5331 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 5332 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
5333 | /* We've already printed what needs to be printed. */ |
5334 | bs->print_it = print_it_done; | |
5335 | break; | |
5336 | } | |
5337 | } | |
5338 | else /* must_check_value == 0 */ | |
5339 | { | |
5340 | /* This is a case where some watchpoint(s) triggered, but | |
5341 | not at the address of this watchpoint, or else no | |
5342 | watchpoint triggered after all. So don't print | |
5343 | anything for this watchpoint. */ | |
5344 | bs->print_it = print_it_noop; | |
5345 | bs->stop = 0; | |
5346 | } | |
5347 | } | |
5348 | } | |
5349 | ||
7d4df6a4 DE |
5350 | /* For breakpoints that are currently marked as telling gdb to stop, |
5351 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5352 | of breakpoint referred to by BS. If we should not stop for this |
5353 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5354 | |
18a18393 VP |
5355 | static void |
5356 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5357 | { | |
2bdf28a0 JK |
5358 | const struct bp_location *bl; |
5359 | struct breakpoint *b; | |
7d4df6a4 DE |
5360 | int value_is_zero = 0; |
5361 | struct expression *cond; | |
5362 | ||
5363 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5364 | |
5365 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5366 | bl = bs->bp_location_at; |
2bdf28a0 | 5367 | gdb_assert (bl != NULL); |
f431efe5 | 5368 | b = bs->breakpoint_at; |
2bdf28a0 | 5369 | gdb_assert (b != NULL); |
18a18393 | 5370 | |
b775012e LM |
5371 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5372 | need to do so again since GDB does not know if we stopped due to a | |
5373 | breakpoint or a single step breakpoint. */ | |
5374 | ||
18a18393 | 5375 | if (frame_id_p (b->frame_id) |
edb3359d | 5376 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5377 | { |
7d4df6a4 DE |
5378 | bs->stop = 0; |
5379 | return; | |
5380 | } | |
60e1c644 | 5381 | |
12ab52e9 PA |
5382 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5383 | evaluating the condition if this isn't the specified | |
5384 | thread/task. */ | |
5385 | if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid)) | |
5386 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) | |
5387 | ||
6c1b0f7b DE |
5388 | { |
5389 | bs->stop = 0; | |
5390 | return; | |
5391 | } | |
5392 | ||
6dddc817 DE |
5393 | /* Evaluate extension language breakpoints that have a "stop" method |
5394 | implemented. */ | |
5395 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5396 | |
7d4df6a4 DE |
5397 | if (is_watchpoint (b)) |
5398 | { | |
5399 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5400 | |
7d4df6a4 DE |
5401 | cond = w->cond_exp; |
5402 | } | |
5403 | else | |
5404 | cond = bl->cond; | |
60e1c644 | 5405 | |
7d4df6a4 DE |
5406 | if (cond && b->disposition != disp_del_at_next_stop) |
5407 | { | |
5408 | int within_current_scope = 1; | |
5409 | struct watchpoint * w; | |
60e1c644 | 5410 | |
7d4df6a4 DE |
5411 | /* We use value_mark and value_free_to_mark because it could |
5412 | be a long time before we return to the command level and | |
5413 | call free_all_values. We can't call free_all_values | |
5414 | because we might be in the middle of evaluating a | |
5415 | function call. */ | |
5416 | struct value *mark = value_mark (); | |
5417 | ||
5418 | if (is_watchpoint (b)) | |
5419 | w = (struct watchpoint *) b; | |
5420 | else | |
5421 | w = NULL; | |
5422 | ||
5423 | /* Need to select the frame, with all that implies so that | |
5424 | the conditions will have the right context. Because we | |
5425 | use the frame, we will not see an inlined function's | |
5426 | variables when we arrive at a breakpoint at the start | |
5427 | of the inlined function; the current frame will be the | |
5428 | call site. */ | |
5429 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5430 | select_frame (get_current_frame ()); | |
5431 | else | |
18a18393 | 5432 | { |
7d4df6a4 DE |
5433 | struct frame_info *frame; |
5434 | ||
5435 | /* For local watchpoint expressions, which particular | |
5436 | instance of a local is being watched matters, so we | |
5437 | keep track of the frame to evaluate the expression | |
5438 | in. To evaluate the condition however, it doesn't | |
5439 | really matter which instantiation of the function | |
5440 | where the condition makes sense triggers the | |
5441 | watchpoint. This allows an expression like "watch | |
5442 | global if q > 10" set in `func', catch writes to | |
5443 | global on all threads that call `func', or catch | |
5444 | writes on all recursive calls of `func' by a single | |
5445 | thread. We simply always evaluate the condition in | |
5446 | the innermost frame that's executing where it makes | |
5447 | sense to evaluate the condition. It seems | |
5448 | intuitive. */ | |
5449 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5450 | if (frame != NULL) | |
5451 | select_frame (frame); | |
5452 | else | |
5453 | within_current_scope = 0; | |
18a18393 | 5454 | } |
7d4df6a4 DE |
5455 | if (within_current_scope) |
5456 | value_is_zero | |
5457 | = catch_errors (breakpoint_cond_eval, cond, | |
5458 | "Error in testing breakpoint condition:\n", | |
5459 | RETURN_MASK_ALL); | |
5460 | else | |
18a18393 | 5461 | { |
7d4df6a4 DE |
5462 | warning (_("Watchpoint condition cannot be tested " |
5463 | "in the current scope")); | |
5464 | /* If we failed to set the right context for this | |
5465 | watchpoint, unconditionally report it. */ | |
5466 | value_is_zero = 0; | |
18a18393 | 5467 | } |
7d4df6a4 DE |
5468 | /* FIXME-someday, should give breakpoint #. */ |
5469 | value_free_to_mark (mark); | |
18a18393 | 5470 | } |
7d4df6a4 DE |
5471 | |
5472 | if (cond && value_is_zero) | |
5473 | { | |
5474 | bs->stop = 0; | |
5475 | } | |
7d4df6a4 DE |
5476 | else if (b->ignore_count > 0) |
5477 | { | |
5478 | b->ignore_count--; | |
5479 | bs->stop = 0; | |
5480 | /* Increase the hit count even though we don't stop. */ | |
5481 | ++(b->hit_count); | |
5482 | observer_notify_breakpoint_modified (b); | |
5483 | } | |
18a18393 VP |
5484 | } |
5485 | ||
1cf4d951 PA |
5486 | /* Returns true if we need to track moribund locations of LOC's type |
5487 | on the current target. */ | |
5488 | ||
5489 | static int | |
5490 | need_moribund_for_location_type (struct bp_location *loc) | |
5491 | { | |
5492 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5493 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5494 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5495 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5496 | } | |
5497 | ||
18a18393 | 5498 | |
9709f61c | 5499 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5500 | BP_ADDR in thread PTID. |
c906108c | 5501 | |
d983da9c | 5502 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5503 | don't understand this stop. Result is a chain of bpstat's such |
5504 | that: | |
c906108c | 5505 | |
c5aa993b | 5506 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5507 | |
c5aa993b | 5508 | if we understand why we stopped, the result is not null. |
c906108c | 5509 | |
c5aa993b JM |
5510 | Each element of the chain refers to a particular breakpoint or |
5511 | watchpoint at which we have stopped. (We may have stopped for | |
5512 | several reasons concurrently.) | |
c906108c | 5513 | |
c5aa993b JM |
5514 | Each element of the chain has valid next, breakpoint_at, |
5515 | commands, FIXME??? fields. */ | |
c906108c SS |
5516 | |
5517 | bpstat | |
6c95b8df | 5518 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5519 | CORE_ADDR bp_addr, ptid_t ptid, |
5520 | const struct target_waitstatus *ws) | |
c906108c | 5521 | { |
0d381245 | 5522 | struct breakpoint *b = NULL; |
afe38095 | 5523 | struct bp_location *bl; |
20874c92 | 5524 | struct bp_location *loc; |
5760d0ab JK |
5525 | /* First item of allocated bpstat's. */ |
5526 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5527 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5528 | bpstat bs; |
20874c92 | 5529 | int ix; |
429374b8 | 5530 | int need_remove_insert; |
f431efe5 | 5531 | int removed_any; |
c906108c | 5532 | |
f431efe5 PA |
5533 | /* First, build the bpstat chain with locations that explain a |
5534 | target stop, while being careful to not set the target running, | |
5535 | as that may invalidate locations (in particular watchpoint | |
5536 | locations are recreated). Resuming will happen here with | |
5537 | breakpoint conditions or watchpoint expressions that include | |
5538 | inferior function calls. */ | |
c5aa993b | 5539 | |
429374b8 JK |
5540 | ALL_BREAKPOINTS (b) |
5541 | { | |
1a853c52 | 5542 | if (!breakpoint_enabled (b)) |
429374b8 | 5543 | continue; |
a5606eee | 5544 | |
429374b8 JK |
5545 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5546 | { | |
4a64f543 MS |
5547 | /* For hardware watchpoints, we look only at the first |
5548 | location. The watchpoint_check function will work on the | |
5549 | entire expression, not the individual locations. For | |
5550 | read watchpoints, the watchpoints_triggered function has | |
5551 | checked all locations already. */ | |
429374b8 JK |
5552 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5553 | break; | |
18a18393 | 5554 | |
f6592439 | 5555 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5556 | continue; |
c5aa993b | 5557 | |
09ac7c10 | 5558 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5559 | continue; |
c5aa993b | 5560 | |
4a64f543 MS |
5561 | /* Come here if it's a watchpoint, or if the break address |
5562 | matches. */ | |
c5aa993b | 5563 | |
4a64f543 MS |
5564 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5565 | explain stop. */ | |
c5aa993b | 5566 | |
f431efe5 PA |
5567 | /* Assume we stop. Should we find a watchpoint that is not |
5568 | actually triggered, or if the condition of the breakpoint | |
5569 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5570 | bs->stop = 1; |
5571 | bs->print = 1; | |
d983da9c | 5572 | |
f431efe5 PA |
5573 | /* If this is a scope breakpoint, mark the associated |
5574 | watchpoint as triggered so that we will handle the | |
5575 | out-of-scope event. We'll get to the watchpoint next | |
5576 | iteration. */ | |
d0fb5eae | 5577 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5578 | { |
5579 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5580 | ||
5581 | w->watchpoint_triggered = watch_triggered_yes; | |
5582 | } | |
f431efe5 PA |
5583 | } |
5584 | } | |
5585 | ||
7c16b83e | 5586 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5587 | if (!target_supports_stopped_by_sw_breakpoint () |
5588 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5589 | { |
1cf4d951 | 5590 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5591 | { |
1cf4d951 PA |
5592 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5593 | && need_moribund_for_location_type (loc)) | |
5594 | { | |
5595 | bs = bpstat_alloc (loc, &bs_link); | |
5596 | /* For hits of moribund locations, we should just proceed. */ | |
5597 | bs->stop = 0; | |
5598 | bs->print = 0; | |
5599 | bs->print_it = print_it_noop; | |
5600 | } | |
f431efe5 PA |
5601 | } |
5602 | } | |
5603 | ||
edcc5120 TT |
5604 | /* A bit of special processing for shlib breakpoints. We need to |
5605 | process solib loading here, so that the lists of loaded and | |
5606 | unloaded libraries are correct before we handle "catch load" and | |
5607 | "catch unload". */ | |
5608 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5609 | { | |
5d268276 | 5610 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5611 | { |
5612 | handle_solib_event (); | |
5613 | break; | |
5614 | } | |
5615 | } | |
5616 | ||
f431efe5 PA |
5617 | /* Now go through the locations that caused the target to stop, and |
5618 | check whether we're interested in reporting this stop to higher | |
5619 | layers, or whether we should resume the target transparently. */ | |
5620 | ||
5621 | removed_any = 0; | |
5622 | ||
5760d0ab | 5623 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5624 | { |
5625 | if (!bs->stop) | |
5626 | continue; | |
5627 | ||
f431efe5 | 5628 | b = bs->breakpoint_at; |
348d480f PA |
5629 | b->ops->check_status (bs); |
5630 | if (bs->stop) | |
28010a5d | 5631 | { |
348d480f | 5632 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5633 | |
429374b8 JK |
5634 | if (bs->stop) |
5635 | { | |
5636 | ++(b->hit_count); | |
8d3788bd | 5637 | observer_notify_breakpoint_modified (b); |
c906108c | 5638 | |
4a64f543 | 5639 | /* We will stop here. */ |
429374b8 JK |
5640 | if (b->disposition == disp_disable) |
5641 | { | |
816338b5 | 5642 | --(b->enable_count); |
1a853c52 | 5643 | if (b->enable_count <= 0) |
429374b8 | 5644 | b->enable_state = bp_disabled; |
f431efe5 | 5645 | removed_any = 1; |
429374b8 JK |
5646 | } |
5647 | if (b->silent) | |
5648 | bs->print = 0; | |
5649 | bs->commands = b->commands; | |
9add0f1b | 5650 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5651 | if (command_line_is_silent (bs->commands |
5652 | ? bs->commands->commands : NULL)) | |
5653 | bs->print = 0; | |
9d6e6e84 HZ |
5654 | |
5655 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5656 | } |
5657 | ||
348d480f | 5658 | } |
a9b3a50f PA |
5659 | |
5660 | /* Print nothing for this entry if we don't stop or don't | |
5661 | print. */ | |
5662 | if (!bs->stop || !bs->print) | |
5663 | bs->print_it = print_it_noop; | |
429374b8 | 5664 | } |
876fa593 | 5665 | |
d983da9c DJ |
5666 | /* If we aren't stopping, the value of some hardware watchpoint may |
5667 | not have changed, but the intermediate memory locations we are | |
5668 | watching may have. Don't bother if we're stopping; this will get | |
5669 | done later. */ | |
d832cb68 | 5670 | need_remove_insert = 0; |
5760d0ab JK |
5671 | if (! bpstat_causes_stop (bs_head)) |
5672 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5673 | if (!bs->stop |
f431efe5 PA |
5674 | && bs->breakpoint_at |
5675 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5676 | { |
3a5c3e22 PA |
5677 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5678 | ||
5679 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5680 | need_remove_insert = 1; |
d983da9c DJ |
5681 | } |
5682 | ||
d832cb68 | 5683 | if (need_remove_insert) |
44702360 | 5684 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5685 | else if (removed_any) |
44702360 | 5686 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5687 | |
5760d0ab | 5688 | return bs_head; |
c906108c | 5689 | } |
628fe4e4 JK |
5690 | |
5691 | static void | |
5692 | handle_jit_event (void) | |
5693 | { | |
5694 | struct frame_info *frame; | |
5695 | struct gdbarch *gdbarch; | |
5696 | ||
5697 | /* Switch terminal for any messages produced by | |
5698 | breakpoint_re_set. */ | |
5699 | target_terminal_ours_for_output (); | |
5700 | ||
5701 | frame = get_current_frame (); | |
5702 | gdbarch = get_frame_arch (frame); | |
5703 | ||
5704 | jit_event_handler (gdbarch); | |
5705 | ||
5706 | target_terminal_inferior (); | |
5707 | } | |
5708 | ||
5709 | /* Prepare WHAT final decision for infrun. */ | |
5710 | ||
5711 | /* Decide what infrun needs to do with this bpstat. */ | |
5712 | ||
c906108c | 5713 | struct bpstat_what |
0e30163f | 5714 | bpstat_what (bpstat bs_head) |
c906108c | 5715 | { |
c906108c | 5716 | struct bpstat_what retval; |
628fe4e4 | 5717 | int jit_event = 0; |
0e30163f | 5718 | bpstat bs; |
c906108c | 5719 | |
628fe4e4 | 5720 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5721 | retval.call_dummy = STOP_NONE; |
186c406b | 5722 | retval.is_longjmp = 0; |
628fe4e4 | 5723 | |
0e30163f | 5724 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5725 | { |
628fe4e4 JK |
5726 | /* Extract this BS's action. After processing each BS, we check |
5727 | if its action overrides all we've seem so far. */ | |
5728 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5729 | enum bptype bptype; | |
5730 | ||
c906108c | 5731 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5732 | { |
5733 | /* I suspect this can happen if it was a momentary | |
5734 | breakpoint which has since been deleted. */ | |
5735 | bptype = bp_none; | |
5736 | } | |
20874c92 | 5737 | else |
f431efe5 | 5738 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5739 | |
5740 | switch (bptype) | |
c906108c SS |
5741 | { |
5742 | case bp_none: | |
628fe4e4 | 5743 | break; |
c906108c SS |
5744 | case bp_breakpoint: |
5745 | case bp_hardware_breakpoint: | |
7c16b83e | 5746 | case bp_single_step: |
c906108c SS |
5747 | case bp_until: |
5748 | case bp_finish: | |
a9b3a50f | 5749 | case bp_shlib_event: |
c906108c SS |
5750 | if (bs->stop) |
5751 | { | |
5752 | if (bs->print) | |
628fe4e4 | 5753 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5754 | else |
628fe4e4 | 5755 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5756 | } |
5757 | else | |
628fe4e4 | 5758 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5759 | break; |
5760 | case bp_watchpoint: | |
5761 | case bp_hardware_watchpoint: | |
5762 | case bp_read_watchpoint: | |
5763 | case bp_access_watchpoint: | |
5764 | if (bs->stop) | |
5765 | { | |
5766 | if (bs->print) | |
628fe4e4 | 5767 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5768 | else |
628fe4e4 | 5769 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5770 | } |
5771 | else | |
628fe4e4 JK |
5772 | { |
5773 | /* There was a watchpoint, but we're not stopping. | |
5774 | This requires no further action. */ | |
5775 | } | |
c906108c SS |
5776 | break; |
5777 | case bp_longjmp: | |
e2e4d78b | 5778 | case bp_longjmp_call_dummy: |
186c406b | 5779 | case bp_exception: |
0a39bb32 PA |
5780 | if (bs->stop) |
5781 | { | |
5782 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5783 | retval.is_longjmp = bptype != bp_exception; | |
5784 | } | |
5785 | else | |
5786 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5787 | break; |
5788 | case bp_longjmp_resume: | |
186c406b | 5789 | case bp_exception_resume: |
0a39bb32 PA |
5790 | if (bs->stop) |
5791 | { | |
5792 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5793 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5794 | } | |
5795 | else | |
5796 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5797 | break; |
5798 | case bp_step_resume: | |
5799 | if (bs->stop) | |
628fe4e4 JK |
5800 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5801 | else | |
c906108c | 5802 | { |
628fe4e4 JK |
5803 | /* It is for the wrong frame. */ |
5804 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5805 | } |
c906108c | 5806 | break; |
2c03e5be PA |
5807 | case bp_hp_step_resume: |
5808 | if (bs->stop) | |
5809 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5810 | else | |
5811 | { | |
5812 | /* It is for the wrong frame. */ | |
5813 | this_action = BPSTAT_WHAT_SINGLE; | |
5814 | } | |
5815 | break; | |
c906108c | 5816 | case bp_watchpoint_scope: |
c4093a6a | 5817 | case bp_thread_event: |
1900040c | 5818 | case bp_overlay_event: |
0fd8e87f | 5819 | case bp_longjmp_master: |
aa7d318d | 5820 | case bp_std_terminate_master: |
186c406b | 5821 | case bp_exception_master: |
628fe4e4 | 5822 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5823 | break; |
ce78b96d | 5824 | case bp_catchpoint: |
c5aa993b JM |
5825 | if (bs->stop) |
5826 | { | |
5827 | if (bs->print) | |
628fe4e4 | 5828 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5829 | else |
628fe4e4 | 5830 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5831 | } |
5832 | else | |
628fe4e4 JK |
5833 | { |
5834 | /* There was a catchpoint, but we're not stopping. | |
5835 | This requires no further action. */ | |
5836 | } | |
5837 | break; | |
628fe4e4 JK |
5838 | case bp_jit_event: |
5839 | jit_event = 1; | |
5840 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5841 | break; |
c906108c | 5842 | case bp_call_dummy: |
53a5351d JM |
5843 | /* Make sure the action is stop (silent or noisy), |
5844 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5845 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5846 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5847 | break; |
5848 | case bp_std_terminate: | |
5849 | /* Make sure the action is stop (silent or noisy), | |
5850 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5851 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5852 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5853 | break; |
1042e4c0 | 5854 | case bp_tracepoint: |
7a697b8d | 5855 | case bp_fast_tracepoint: |
0fb4aa4b | 5856 | case bp_static_tracepoint: |
1042e4c0 SS |
5857 | /* Tracepoint hits should not be reported back to GDB, and |
5858 | if one got through somehow, it should have been filtered | |
5859 | out already. */ | |
5860 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5861 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5862 | break; |
5863 | case bp_gnu_ifunc_resolver: | |
5864 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5865 | this_action = BPSTAT_WHAT_SINGLE; | |
5866 | break; | |
5867 | case bp_gnu_ifunc_resolver_return: | |
5868 | /* The breakpoint will be removed, execution will restart from the | |
5869 | PC of the former breakpoint. */ | |
5870 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5871 | break; | |
e7e0cddf SS |
5872 | |
5873 | case bp_dprintf: | |
a11cfd87 HZ |
5874 | if (bs->stop) |
5875 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5876 | else | |
5877 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5878 | break; |
5879 | ||
628fe4e4 JK |
5880 | default: |
5881 | internal_error (__FILE__, __LINE__, | |
5882 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5883 | } |
628fe4e4 JK |
5884 | |
5885 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5886 | } |
628fe4e4 | 5887 | |
0e30163f JK |
5888 | /* These operations may affect the bs->breakpoint_at state so they are |
5889 | delayed after MAIN_ACTION is decided above. */ | |
5890 | ||
628fe4e4 JK |
5891 | if (jit_event) |
5892 | { | |
5893 | if (debug_infrun) | |
5894 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5895 | ||
5896 | handle_jit_event (); | |
5897 | } | |
5898 | ||
0e30163f JK |
5899 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5900 | { | |
5901 | struct breakpoint *b = bs->breakpoint_at; | |
5902 | ||
5903 | if (b == NULL) | |
5904 | continue; | |
5905 | switch (b->type) | |
5906 | { | |
5907 | case bp_gnu_ifunc_resolver: | |
5908 | gnu_ifunc_resolver_stop (b); | |
5909 | break; | |
5910 | case bp_gnu_ifunc_resolver_return: | |
5911 | gnu_ifunc_resolver_return_stop (b); | |
5912 | break; | |
5913 | } | |
5914 | } | |
5915 | ||
c906108c SS |
5916 | return retval; |
5917 | } | |
5918 | ||
5919 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5920 | without hardware support). This isn't related to a specific bpstat, | |
5921 | just to things like whether watchpoints are set. */ | |
5922 | ||
c5aa993b | 5923 | int |
fba45db2 | 5924 | bpstat_should_step (void) |
c906108c SS |
5925 | { |
5926 | struct breakpoint *b; | |
cc59ec59 | 5927 | |
c906108c | 5928 | ALL_BREAKPOINTS (b) |
717a8278 | 5929 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5930 | return 1; |
c906108c SS |
5931 | return 0; |
5932 | } | |
5933 | ||
67822962 PA |
5934 | int |
5935 | bpstat_causes_stop (bpstat bs) | |
5936 | { | |
5937 | for (; bs != NULL; bs = bs->next) | |
5938 | if (bs->stop) | |
5939 | return 1; | |
5940 | ||
5941 | return 0; | |
5942 | } | |
5943 | ||
c906108c | 5944 | \f |
c5aa993b | 5945 | |
170b53b2 UW |
5946 | /* Compute a string of spaces suitable to indent the next line |
5947 | so it starts at the position corresponding to the table column | |
5948 | named COL_NAME in the currently active table of UIOUT. */ | |
5949 | ||
5950 | static char * | |
5951 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5952 | { | |
5953 | static char wrap_indent[80]; | |
5954 | int i, total_width, width, align; | |
5955 | char *text; | |
5956 | ||
5957 | total_width = 0; | |
5958 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5959 | { | |
5960 | if (strcmp (text, col_name) == 0) | |
5961 | { | |
5962 | gdb_assert (total_width < sizeof wrap_indent); | |
5963 | memset (wrap_indent, ' ', total_width); | |
5964 | wrap_indent[total_width] = 0; | |
5965 | ||
5966 | return wrap_indent; | |
5967 | } | |
5968 | ||
5969 | total_width += width + 1; | |
5970 | } | |
5971 | ||
5972 | return NULL; | |
5973 | } | |
5974 | ||
b775012e LM |
5975 | /* Determine if the locations of this breakpoint will have their conditions |
5976 | evaluated by the target, host or a mix of both. Returns the following: | |
5977 | ||
5978 | "host": Host evals condition. | |
5979 | "host or target": Host or Target evals condition. | |
5980 | "target": Target evals condition. | |
5981 | */ | |
5982 | ||
5983 | static const char * | |
5984 | bp_condition_evaluator (struct breakpoint *b) | |
5985 | { | |
5986 | struct bp_location *bl; | |
5987 | char host_evals = 0; | |
5988 | char target_evals = 0; | |
5989 | ||
5990 | if (!b) | |
5991 | return NULL; | |
5992 | ||
5993 | if (!is_breakpoint (b)) | |
5994 | return NULL; | |
5995 | ||
5996 | if (gdb_evaluates_breakpoint_condition_p () | |
5997 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5998 | return condition_evaluation_host; | |
5999 | ||
6000 | for (bl = b->loc; bl; bl = bl->next) | |
6001 | { | |
6002 | if (bl->cond_bytecode) | |
6003 | target_evals++; | |
6004 | else | |
6005 | host_evals++; | |
6006 | } | |
6007 | ||
6008 | if (host_evals && target_evals) | |
6009 | return condition_evaluation_both; | |
6010 | else if (target_evals) | |
6011 | return condition_evaluation_target; | |
6012 | else | |
6013 | return condition_evaluation_host; | |
6014 | } | |
6015 | ||
6016 | /* Determine the breakpoint location's condition evaluator. This is | |
6017 | similar to bp_condition_evaluator, but for locations. */ | |
6018 | ||
6019 | static const char * | |
6020 | bp_location_condition_evaluator (struct bp_location *bl) | |
6021 | { | |
6022 | if (bl && !is_breakpoint (bl->owner)) | |
6023 | return NULL; | |
6024 | ||
6025 | if (gdb_evaluates_breakpoint_condition_p () | |
6026 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6027 | return condition_evaluation_host; | |
6028 | ||
6029 | if (bl && bl->cond_bytecode) | |
6030 | return condition_evaluation_target; | |
6031 | else | |
6032 | return condition_evaluation_host; | |
6033 | } | |
6034 | ||
859825b8 JK |
6035 | /* Print the LOC location out of the list of B->LOC locations. */ |
6036 | ||
170b53b2 UW |
6037 | static void |
6038 | print_breakpoint_location (struct breakpoint *b, | |
6039 | struct bp_location *loc) | |
0d381245 | 6040 | { |
79a45e25 | 6041 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
6042 | struct cleanup *old_chain = save_current_program_space (); |
6043 | ||
859825b8 JK |
6044 | if (loc != NULL && loc->shlib_disabled) |
6045 | loc = NULL; | |
6046 | ||
6c95b8df PA |
6047 | if (loc != NULL) |
6048 | set_current_program_space (loc->pspace); | |
6049 | ||
56435ebe | 6050 | if (b->display_canonical) |
f00aae0f KS |
6051 | ui_out_field_string (uiout, "what", |
6052 | event_location_to_string (b->location)); | |
2f202fde | 6053 | else if (loc && loc->symtab) |
0d381245 VP |
6054 | { |
6055 | struct symbol *sym | |
6056 | = find_pc_sect_function (loc->address, loc->section); | |
6057 | if (sym) | |
6058 | { | |
6059 | ui_out_text (uiout, "in "); | |
6060 | ui_out_field_string (uiout, "func", | |
6061 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
6062 | ui_out_text (uiout, " "); |
6063 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
6064 | ui_out_text (uiout, "at "); | |
0d381245 | 6065 | } |
05cba821 JK |
6066 | ui_out_field_string (uiout, "file", |
6067 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 6068 | ui_out_text (uiout, ":"); |
05cba821 | 6069 | |
0d381245 | 6070 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
6071 | ui_out_field_string (uiout, "fullname", |
6072 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 6073 | |
f8eba3c6 | 6074 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 6075 | } |
859825b8 | 6076 | else if (loc) |
0d381245 | 6077 | { |
f99d8bf4 PA |
6078 | struct ui_file *stb = mem_fileopen (); |
6079 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 6080 | |
f99d8bf4 | 6081 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 6082 | demangle, ""); |
0d381245 | 6083 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
6084 | |
6085 | do_cleanups (stb_chain); | |
0d381245 | 6086 | } |
859825b8 | 6087 | else |
f00aae0f KS |
6088 | { |
6089 | ui_out_field_string (uiout, "pending", | |
6090 | event_location_to_string (b->location)); | |
6091 | /* If extra_string is available, it could be holding a condition | |
6092 | or dprintf arguments. In either case, make sure it is printed, | |
6093 | too, but only for non-MI streams. */ | |
6094 | if (!ui_out_is_mi_like_p (uiout) && b->extra_string != NULL) | |
6095 | { | |
6096 | if (b->type == bp_dprintf) | |
6097 | ui_out_text (uiout, ","); | |
6098 | else | |
6099 | ui_out_text (uiout, " "); | |
6100 | ui_out_text (uiout, b->extra_string); | |
6101 | } | |
6102 | } | |
6c95b8df | 6103 | |
b775012e LM |
6104 | if (loc && is_breakpoint (b) |
6105 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6106 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6107 | { | |
6108 | ui_out_text (uiout, " ("); | |
6109 | ui_out_field_string (uiout, "evaluated-by", | |
6110 | bp_location_condition_evaluator (loc)); | |
6111 | ui_out_text (uiout, ")"); | |
6112 | } | |
6113 | ||
6c95b8df | 6114 | do_cleanups (old_chain); |
0d381245 VP |
6115 | } |
6116 | ||
269b11a2 PA |
6117 | static const char * |
6118 | bptype_string (enum bptype type) | |
c906108c | 6119 | { |
c4093a6a JM |
6120 | struct ep_type_description |
6121 | { | |
6122 | enum bptype type; | |
6123 | char *description; | |
6124 | }; | |
6125 | static struct ep_type_description bptypes[] = | |
c906108c | 6126 | { |
c5aa993b JM |
6127 | {bp_none, "?deleted?"}, |
6128 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6129 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6130 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6131 | {bp_until, "until"}, |
6132 | {bp_finish, "finish"}, | |
6133 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6134 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6135 | {bp_read_watchpoint, "read watchpoint"}, |
6136 | {bp_access_watchpoint, "acc watchpoint"}, | |
6137 | {bp_longjmp, "longjmp"}, | |
6138 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6139 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6140 | {bp_exception, "exception"}, |
6141 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6142 | {bp_step_resume, "step resume"}, |
2c03e5be | 6143 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6144 | {bp_watchpoint_scope, "watchpoint scope"}, |
6145 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6146 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6147 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6148 | {bp_thread_event, "thread events"}, |
1900040c | 6149 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6150 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6151 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6152 | {bp_exception_master, "exception master"}, |
ce78b96d | 6153 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6154 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6155 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6156 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6157 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6158 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6159 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6160 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6161 | }; |
269b11a2 PA |
6162 | |
6163 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6164 | || ((int) type != bptypes[(int) type].type)) | |
6165 | internal_error (__FILE__, __LINE__, | |
6166 | _("bptypes table does not describe type #%d."), | |
6167 | (int) type); | |
6168 | ||
6169 | return bptypes[(int) type].description; | |
6170 | } | |
6171 | ||
998580f1 MK |
6172 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6173 | For CLI, prefix the list with the string 'inf'. */ | |
6174 | ||
6175 | static void | |
6176 | output_thread_groups (struct ui_out *uiout, | |
6177 | const char *field_name, | |
6178 | VEC(int) *inf_num, | |
6179 | int mi_only) | |
6180 | { | |
752eb8b4 | 6181 | struct cleanup *back_to; |
998580f1 MK |
6182 | int is_mi = ui_out_is_mi_like_p (uiout); |
6183 | int inf; | |
6184 | int i; | |
6185 | ||
6186 | /* For backward compatibility, don't display inferiors in CLI unless | |
6187 | there are several. Always display them for MI. */ | |
6188 | if (!is_mi && mi_only) | |
6189 | return; | |
6190 | ||
752eb8b4 TT |
6191 | back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); |
6192 | ||
998580f1 MK |
6193 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6194 | { | |
6195 | if (is_mi) | |
6196 | { | |
6197 | char mi_group[10]; | |
6198 | ||
6199 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
6200 | ui_out_field_string (uiout, NULL, mi_group); | |
6201 | } | |
6202 | else | |
6203 | { | |
6204 | if (i == 0) | |
6205 | ui_out_text (uiout, " inf "); | |
6206 | else | |
6207 | ui_out_text (uiout, ", "); | |
6208 | ||
6209 | ui_out_text (uiout, plongest (inf)); | |
6210 | } | |
6211 | } | |
6212 | ||
6213 | do_cleanups (back_to); | |
6214 | } | |
6215 | ||
269b11a2 PA |
6216 | /* Print B to gdb_stdout. */ |
6217 | ||
6218 | static void | |
6219 | print_one_breakpoint_location (struct breakpoint *b, | |
6220 | struct bp_location *loc, | |
6221 | int loc_number, | |
6222 | struct bp_location **last_loc, | |
269b11a2 PA |
6223 | int allflag) |
6224 | { | |
6225 | struct command_line *l; | |
c2c6d25f | 6226 | static char bpenables[] = "nynny"; |
c906108c | 6227 | |
79a45e25 | 6228 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6229 | int header_of_multiple = 0; |
6230 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6231 | struct value_print_options opts; |
6232 | ||
6233 | get_user_print_options (&opts); | |
0d381245 VP |
6234 | |
6235 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6236 | /* See comment in print_one_breakpoint concerning treatment of |
6237 | breakpoints with single disabled location. */ | |
0d381245 VP |
6238 | if (loc == NULL |
6239 | && (b->loc != NULL | |
6240 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6241 | header_of_multiple = 1; | |
6242 | if (loc == NULL) | |
6243 | loc = b->loc; | |
6244 | ||
c4093a6a JM |
6245 | annotate_record (); |
6246 | ||
6247 | /* 1 */ | |
6248 | annotate_field (0); | |
0d381245 VP |
6249 | if (part_of_multiple) |
6250 | { | |
6251 | char *formatted; | |
0c6773c1 | 6252 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
6253 | ui_out_field_string (uiout, "number", formatted); |
6254 | xfree (formatted); | |
6255 | } | |
6256 | else | |
6257 | { | |
6258 | ui_out_field_int (uiout, "number", b->number); | |
6259 | } | |
c4093a6a JM |
6260 | |
6261 | /* 2 */ | |
6262 | annotate_field (1); | |
0d381245 VP |
6263 | if (part_of_multiple) |
6264 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
6265 | else |
6266 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
6267 | |
6268 | /* 3 */ | |
6269 | annotate_field (2); | |
0d381245 VP |
6270 | if (part_of_multiple) |
6271 | ui_out_field_skip (uiout, "disp"); | |
6272 | else | |
2cec12e5 | 6273 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 6274 | |
c4093a6a JM |
6275 | |
6276 | /* 4 */ | |
6277 | annotate_field (3); | |
0d381245 | 6278 | if (part_of_multiple) |
54e52265 | 6279 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6280 | else |
4a64f543 MS |
6281 | ui_out_field_fmt (uiout, "enabled", "%c", |
6282 | bpenables[(int) b->enable_state]); | |
54e52265 | 6283 | ui_out_spaces (uiout, 2); |
0d381245 | 6284 | |
c4093a6a JM |
6285 | |
6286 | /* 5 and 6 */ | |
3086aeae | 6287 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6288 | { |
4a64f543 MS |
6289 | /* Although the print_one can possibly print all locations, |
6290 | calling it here is not likely to get any nice result. So, | |
6291 | make sure there's just one location. */ | |
0d381245 | 6292 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6293 | b->ops->print_one (b, last_loc); |
0d381245 | 6294 | } |
3086aeae DJ |
6295 | else |
6296 | switch (b->type) | |
6297 | { | |
6298 | case bp_none: | |
6299 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6300 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6301 | break; |
c906108c | 6302 | |
3086aeae DJ |
6303 | case bp_watchpoint: |
6304 | case bp_hardware_watchpoint: | |
6305 | case bp_read_watchpoint: | |
6306 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6307 | { |
6308 | struct watchpoint *w = (struct watchpoint *) b; | |
6309 | ||
6310 | /* Field 4, the address, is omitted (which makes the columns | |
6311 | not line up too nicely with the headers, but the effect | |
6312 | is relatively readable). */ | |
6313 | if (opts.addressprint) | |
6314 | ui_out_field_skip (uiout, "addr"); | |
6315 | annotate_field (5); | |
6316 | ui_out_field_string (uiout, "what", w->exp_string); | |
6317 | } | |
3086aeae DJ |
6318 | break; |
6319 | ||
3086aeae DJ |
6320 | case bp_breakpoint: |
6321 | case bp_hardware_breakpoint: | |
7c16b83e | 6322 | case bp_single_step: |
3086aeae DJ |
6323 | case bp_until: |
6324 | case bp_finish: | |
6325 | case bp_longjmp: | |
6326 | case bp_longjmp_resume: | |
e2e4d78b | 6327 | case bp_longjmp_call_dummy: |
186c406b TT |
6328 | case bp_exception: |
6329 | case bp_exception_resume: | |
3086aeae | 6330 | case bp_step_resume: |
2c03e5be | 6331 | case bp_hp_step_resume: |
3086aeae DJ |
6332 | case bp_watchpoint_scope: |
6333 | case bp_call_dummy: | |
aa7d318d | 6334 | case bp_std_terminate: |
3086aeae DJ |
6335 | case bp_shlib_event: |
6336 | case bp_thread_event: | |
6337 | case bp_overlay_event: | |
0fd8e87f | 6338 | case bp_longjmp_master: |
aa7d318d | 6339 | case bp_std_terminate_master: |
186c406b | 6340 | case bp_exception_master: |
1042e4c0 | 6341 | case bp_tracepoint: |
7a697b8d | 6342 | case bp_fast_tracepoint: |
0fb4aa4b | 6343 | case bp_static_tracepoint: |
e7e0cddf | 6344 | case bp_dprintf: |
4efc6507 | 6345 | case bp_jit_event: |
0e30163f JK |
6346 | case bp_gnu_ifunc_resolver: |
6347 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6348 | if (opts.addressprint) |
3086aeae DJ |
6349 | { |
6350 | annotate_field (4); | |
54e52265 | 6351 | if (header_of_multiple) |
0d381245 | 6352 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 6353 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 6354 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 6355 | else |
5af949e3 UW |
6356 | ui_out_field_core_addr (uiout, "addr", |
6357 | loc->gdbarch, loc->address); | |
3086aeae DJ |
6358 | } |
6359 | annotate_field (5); | |
0d381245 | 6360 | if (!header_of_multiple) |
170b53b2 | 6361 | print_breakpoint_location (b, loc); |
0d381245 | 6362 | if (b->loc) |
a6d9a66e | 6363 | *last_loc = b->loc; |
3086aeae DJ |
6364 | break; |
6365 | } | |
c906108c | 6366 | |
6c95b8df | 6367 | |
998580f1 | 6368 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6369 | { |
6370 | struct inferior *inf; | |
998580f1 MK |
6371 | VEC(int) *inf_num = NULL; |
6372 | int mi_only = 1; | |
6c95b8df | 6373 | |
998580f1 | 6374 | ALL_INFERIORS (inf) |
6c95b8df PA |
6375 | { |
6376 | if (inf->pspace == loc->pspace) | |
998580f1 | 6377 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6378 | } |
998580f1 MK |
6379 | |
6380 | /* For backward compatibility, don't display inferiors in CLI unless | |
6381 | there are several. Always display for MI. */ | |
6382 | if (allflag | |
6383 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6384 | && (number_of_program_spaces () > 1 | |
6385 | || number_of_inferiors () > 1) | |
6386 | /* LOC is for existing B, it cannot be in | |
6387 | moribund_locations and thus having NULL OWNER. */ | |
6388 | && loc->owner->type != bp_catchpoint)) | |
6389 | mi_only = 0; | |
6390 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6391 | VEC_free (int, inf_num); | |
6c95b8df PA |
6392 | } |
6393 | ||
4a306c9a | 6394 | if (!part_of_multiple) |
c4093a6a | 6395 | { |
4a306c9a JB |
6396 | if (b->thread != -1) |
6397 | { | |
6398 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6399 | "stop only in" line a little further down. */ |
4a306c9a JB |
6400 | ui_out_text (uiout, " thread "); |
6401 | ui_out_field_int (uiout, "thread", b->thread); | |
6402 | } | |
6403 | else if (b->task != 0) | |
6404 | { | |
6405 | ui_out_text (uiout, " task "); | |
6406 | ui_out_field_int (uiout, "task", b->task); | |
6407 | } | |
c4093a6a | 6408 | } |
f1310107 | 6409 | |
8b93c638 | 6410 | ui_out_text (uiout, "\n"); |
f1310107 | 6411 | |
348d480f | 6412 | if (!part_of_multiple) |
f1310107 TJB |
6413 | b->ops->print_one_detail (b, uiout); |
6414 | ||
0d381245 | 6415 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6416 | { |
6417 | annotate_field (6); | |
8b93c638 | 6418 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6419 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6420 | the frame ID. */ |
5af949e3 UW |
6421 | ui_out_field_core_addr (uiout, "frame", |
6422 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6423 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6424 | } |
6425 | ||
28010a5d | 6426 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6427 | { |
6428 | annotate_field (7); | |
d77f58be | 6429 | if (is_tracepoint (b)) |
1042e4c0 SS |
6430 | ui_out_text (uiout, "\ttrace only if "); |
6431 | else | |
6432 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6433 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6434 | |
6435 | /* Print whether the target is doing the breakpoint's condition | |
6436 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6437 | if (is_breakpoint (b) | |
6438 | && breakpoint_condition_evaluation_mode () | |
6439 | == condition_evaluation_target) | |
6440 | { | |
6441 | ui_out_text (uiout, " ("); | |
6442 | ui_out_field_string (uiout, "evaluated-by", | |
6443 | bp_condition_evaluator (b)); | |
6444 | ui_out_text (uiout, " evals)"); | |
6445 | } | |
0101ce28 JJ |
6446 | ui_out_text (uiout, "\n"); |
6447 | } | |
6448 | ||
0d381245 | 6449 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6450 | { |
4a64f543 | 6451 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6452 | ui_out_text (uiout, "\tstop only in thread "); |
6453 | ui_out_field_int (uiout, "thread", b->thread); | |
6454 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6455 | } |
6456 | ||
556ec64d YQ |
6457 | if (!part_of_multiple) |
6458 | { | |
6459 | if (b->hit_count) | |
31f56a27 YQ |
6460 | { |
6461 | /* FIXME should make an annotation for this. */ | |
6462 | if (is_catchpoint (b)) | |
6463 | ui_out_text (uiout, "\tcatchpoint"); | |
6464 | else if (is_tracepoint (b)) | |
6465 | ui_out_text (uiout, "\ttracepoint"); | |
6466 | else | |
6467 | ui_out_text (uiout, "\tbreakpoint"); | |
6468 | ui_out_text (uiout, " already hit "); | |
6469 | ui_out_field_int (uiout, "times", b->hit_count); | |
6470 | if (b->hit_count == 1) | |
6471 | ui_out_text (uiout, " time\n"); | |
6472 | else | |
6473 | ui_out_text (uiout, " times\n"); | |
6474 | } | |
556ec64d YQ |
6475 | else |
6476 | { | |
31f56a27 YQ |
6477 | /* Output the count also if it is zero, but only if this is mi. */ |
6478 | if (ui_out_is_mi_like_p (uiout)) | |
6479 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6480 | } |
6481 | } | |
8b93c638 | 6482 | |
0d381245 | 6483 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6484 | { |
6485 | annotate_field (8); | |
8b93c638 JM |
6486 | ui_out_text (uiout, "\tignore next "); |
6487 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6488 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6489 | } |
059fb39f | 6490 | |
816338b5 SS |
6491 | /* Note that an enable count of 1 corresponds to "enable once" |
6492 | behavior, which is reported by the combination of enablement and | |
6493 | disposition, so we don't need to mention it here. */ | |
6494 | if (!part_of_multiple && b->enable_count > 1) | |
6495 | { | |
6496 | annotate_field (8); | |
6497 | ui_out_text (uiout, "\tdisable after "); | |
6498 | /* Tweak the wording to clarify that ignore and enable counts | |
6499 | are distinct, and have additive effect. */ | |
6500 | if (b->ignore_count) | |
6501 | ui_out_text (uiout, "additional "); | |
6502 | else | |
6503 | ui_out_text (uiout, "next "); | |
6504 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6505 | ui_out_text (uiout, " hits\n"); | |
6506 | } | |
6507 | ||
f196051f SS |
6508 | if (!part_of_multiple && is_tracepoint (b)) |
6509 | { | |
6510 | struct tracepoint *tp = (struct tracepoint *) b; | |
6511 | ||
6512 | if (tp->traceframe_usage) | |
6513 | { | |
6514 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6515 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6516 | ui_out_text (uiout, " bytes\n"); | |
6517 | } | |
6518 | } | |
d3ce09f5 | 6519 | |
9add0f1b | 6520 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6521 | if (!part_of_multiple && l) |
c4093a6a | 6522 | { |
3b31d625 EZ |
6523 | struct cleanup *script_chain; |
6524 | ||
c4093a6a | 6525 | annotate_field (9); |
3b31d625 | 6526 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6527 | print_command_lines (uiout, l, 4); |
3b31d625 | 6528 | do_cleanups (script_chain); |
c4093a6a | 6529 | } |
d24317b4 | 6530 | |
d9b3f62e | 6531 | if (is_tracepoint (b)) |
1042e4c0 | 6532 | { |
d9b3f62e PA |
6533 | struct tracepoint *t = (struct tracepoint *) b; |
6534 | ||
6535 | if (!part_of_multiple && t->pass_count) | |
6536 | { | |
6537 | annotate_field (10); | |
6538 | ui_out_text (uiout, "\tpass count "); | |
6539 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6540 | ui_out_text (uiout, " \n"); | |
6541 | } | |
f2a8bc8a YQ |
6542 | |
6543 | /* Don't display it when tracepoint or tracepoint location is | |
6544 | pending. */ | |
6545 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6546 | { | |
6547 | annotate_field (11); | |
6548 | ||
6549 | if (ui_out_is_mi_like_p (uiout)) | |
6550 | ui_out_field_string (uiout, "installed", | |
6551 | loc->inserted ? "y" : "n"); | |
6552 | else | |
6553 | { | |
6554 | if (loc->inserted) | |
6555 | ui_out_text (uiout, "\t"); | |
6556 | else | |
6557 | ui_out_text (uiout, "\tnot "); | |
6558 | ui_out_text (uiout, "installed on target\n"); | |
6559 | } | |
6560 | } | |
1042e4c0 SS |
6561 | } |
6562 | ||
d24317b4 VP |
6563 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6564 | { | |
3a5c3e22 PA |
6565 | if (is_watchpoint (b)) |
6566 | { | |
6567 | struct watchpoint *w = (struct watchpoint *) b; | |
6568 | ||
6569 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6570 | } | |
f00aae0f KS |
6571 | else if (b->location != NULL |
6572 | && event_location_to_string (b->location) != NULL) | |
6573 | ui_out_field_string (uiout, "original-location", | |
6574 | event_location_to_string (b->location)); | |
d24317b4 | 6575 | } |
c4093a6a | 6576 | } |
c5aa993b | 6577 | |
0d381245 VP |
6578 | static void |
6579 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6580 | struct bp_location **last_loc, |
6c95b8df | 6581 | int allflag) |
0d381245 | 6582 | { |
8d3788bd | 6583 | struct cleanup *bkpt_chain; |
79a45e25 | 6584 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6585 | |
6586 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6587 | ||
12c5a436 | 6588 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6589 | do_cleanups (bkpt_chain); |
0d381245 VP |
6590 | |
6591 | /* If this breakpoint has custom print function, | |
6592 | it's already printed. Otherwise, print individual | |
6593 | locations, if any. */ | |
6594 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6595 | { | |
4a64f543 MS |
6596 | /* If breakpoint has a single location that is disabled, we |
6597 | print it as if it had several locations, since otherwise it's | |
6598 | hard to represent "breakpoint enabled, location disabled" | |
6599 | situation. | |
6600 | ||
6601 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6602 | internally, that's not a property exposed to user. */ |
0d381245 | 6603 | if (b->loc |
a5606eee | 6604 | && !is_hardware_watchpoint (b) |
8d3788bd | 6605 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6606 | { |
6607 | struct bp_location *loc; | |
6608 | int n = 1; | |
8d3788bd | 6609 | |
0d381245 | 6610 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6611 | { |
6612 | struct cleanup *inner2 = | |
6613 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6614 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6615 | do_cleanups (inner2); | |
6616 | } | |
0d381245 VP |
6617 | } |
6618 | } | |
6619 | } | |
6620 | ||
a6d9a66e UW |
6621 | static int |
6622 | breakpoint_address_bits (struct breakpoint *b) | |
6623 | { | |
6624 | int print_address_bits = 0; | |
6625 | struct bp_location *loc; | |
6626 | ||
6627 | for (loc = b->loc; loc; loc = loc->next) | |
6628 | { | |
c7437ca6 PA |
6629 | int addr_bit; |
6630 | ||
6631 | /* Software watchpoints that aren't watching memory don't have | |
6632 | an address to print. */ | |
6633 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6634 | continue; | |
6635 | ||
6636 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6637 | if (addr_bit > print_address_bits) |
6638 | print_address_bits = addr_bit; | |
6639 | } | |
6640 | ||
6641 | return print_address_bits; | |
6642 | } | |
0d381245 | 6643 | |
c4093a6a JM |
6644 | struct captured_breakpoint_query_args |
6645 | { | |
6646 | int bnum; | |
6647 | }; | |
c5aa993b | 6648 | |
c4093a6a | 6649 | static int |
2b65245e | 6650 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6651 | { |
6652 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6653 | struct breakpoint *b; |
a6d9a66e | 6654 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6655 | |
c4093a6a JM |
6656 | ALL_BREAKPOINTS (b) |
6657 | { | |
6658 | if (args->bnum == b->number) | |
c5aa993b | 6659 | { |
12c5a436 | 6660 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6661 | return GDB_RC_OK; |
c5aa993b | 6662 | } |
c4093a6a JM |
6663 | } |
6664 | return GDB_RC_NONE; | |
6665 | } | |
c5aa993b | 6666 | |
c4093a6a | 6667 | enum gdb_rc |
4a64f543 MS |
6668 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6669 | char **error_message) | |
c4093a6a JM |
6670 | { |
6671 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6672 | |
c4093a6a JM |
6673 | args.bnum = bnum; |
6674 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6675 | an error. */ |
b0b13bb4 DJ |
6676 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6677 | error_message, RETURN_MASK_ALL) < 0) | |
6678 | return GDB_RC_FAIL; | |
6679 | else | |
6680 | return GDB_RC_OK; | |
c4093a6a | 6681 | } |
c5aa993b | 6682 | |
09d682a4 TT |
6683 | /* Return true if this breakpoint was set by the user, false if it is |
6684 | internal or momentary. */ | |
6685 | ||
6686 | int | |
6687 | user_breakpoint_p (struct breakpoint *b) | |
6688 | { | |
46c6471b | 6689 | return b->number > 0; |
09d682a4 TT |
6690 | } |
6691 | ||
7f3b0473 | 6692 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6693 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6694 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6695 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6696 | ones for which it returns non-zero. Return the total number of | |
6697 | breakpoints listed. */ | |
c906108c | 6698 | |
d77f58be | 6699 | static int |
e5a67952 | 6700 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6701 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6702 | { |
52f0bd74 | 6703 | struct breakpoint *b; |
a6d9a66e | 6704 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6705 | int nr_printable_breakpoints; |
3b31d625 | 6706 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6707 | struct value_print_options opts; |
a6d9a66e | 6708 | int print_address_bits = 0; |
269b11a2 | 6709 | int print_type_col_width = 14; |
79a45e25 | 6710 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6711 | |
79a45b7d TT |
6712 | get_user_print_options (&opts); |
6713 | ||
4a64f543 MS |
6714 | /* Compute the number of rows in the table, as well as the size |
6715 | required for address fields. */ | |
7f3b0473 AC |
6716 | nr_printable_breakpoints = 0; |
6717 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6718 | { |
6719 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6720 | if (filter && !filter (b)) | |
6721 | continue; | |
6722 | ||
6723 | /* If we have an "args" string, it is a list of breakpoints to | |
6724 | accept. Skip the others. */ | |
6725 | if (args != NULL && *args != '\0') | |
6726 | { | |
6727 | if (allflag && parse_and_eval_long (args) != b->number) | |
6728 | continue; | |
6729 | if (!allflag && !number_is_in_list (args, b->number)) | |
6730 | continue; | |
6731 | } | |
269b11a2 | 6732 | |
e5a67952 MS |
6733 | if (allflag || user_breakpoint_p (b)) |
6734 | { | |
6735 | int addr_bit, type_len; | |
a6d9a66e | 6736 | |
e5a67952 MS |
6737 | addr_bit = breakpoint_address_bits (b); |
6738 | if (addr_bit > print_address_bits) | |
6739 | print_address_bits = addr_bit; | |
269b11a2 | 6740 | |
e5a67952 MS |
6741 | type_len = strlen (bptype_string (b->type)); |
6742 | if (type_len > print_type_col_width) | |
6743 | print_type_col_width = type_len; | |
6744 | ||
6745 | nr_printable_breakpoints++; | |
6746 | } | |
6747 | } | |
7f3b0473 | 6748 | |
79a45b7d | 6749 | if (opts.addressprint) |
3b31d625 | 6750 | bkpttbl_chain |
3e43a32a MS |
6751 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6752 | nr_printable_breakpoints, | |
3b31d625 | 6753 | "BreakpointTable"); |
8b93c638 | 6754 | else |
3b31d625 | 6755 | bkpttbl_chain |
3e43a32a MS |
6756 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6757 | nr_printable_breakpoints, | |
3b31d625 | 6758 | "BreakpointTable"); |
8b93c638 | 6759 | |
7f3b0473 | 6760 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6761 | annotate_breakpoints_headers (); |
6762 | if (nr_printable_breakpoints > 0) | |
6763 | annotate_field (0); | |
4a64f543 | 6764 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6765 | if (nr_printable_breakpoints > 0) |
6766 | annotate_field (1); | |
269b11a2 | 6767 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6768 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6769 | if (nr_printable_breakpoints > 0) |
6770 | annotate_field (2); | |
4a64f543 | 6771 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6772 | if (nr_printable_breakpoints > 0) |
6773 | annotate_field (3); | |
54e52265 | 6774 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6775 | if (opts.addressprint) |
e5a67952 MS |
6776 | { |
6777 | if (nr_printable_breakpoints > 0) | |
6778 | annotate_field (4); | |
6779 | if (print_address_bits <= 32) | |
6780 | ui_out_table_header (uiout, 10, ui_left, | |
6781 | "addr", "Address"); /* 5 */ | |
6782 | else | |
6783 | ui_out_table_header (uiout, 18, ui_left, | |
6784 | "addr", "Address"); /* 5 */ | |
6785 | } | |
d7faa9e7 AC |
6786 | if (nr_printable_breakpoints > 0) |
6787 | annotate_field (5); | |
6788 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6789 | ui_out_table_body (uiout); | |
6790 | if (nr_printable_breakpoints > 0) | |
6791 | annotate_breakpoints_table (); | |
7f3b0473 | 6792 | |
c4093a6a | 6793 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6794 | { |
6795 | QUIT; | |
6796 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6797 | if (filter && !filter (b)) | |
6798 | continue; | |
6799 | ||
6800 | /* If we have an "args" string, it is a list of breakpoints to | |
6801 | accept. Skip the others. */ | |
6802 | ||
6803 | if (args != NULL && *args != '\0') | |
6804 | { | |
6805 | if (allflag) /* maintenance info breakpoint */ | |
6806 | { | |
6807 | if (parse_and_eval_long (args) != b->number) | |
6808 | continue; | |
6809 | } | |
6810 | else /* all others */ | |
6811 | { | |
6812 | if (!number_is_in_list (args, b->number)) | |
6813 | continue; | |
6814 | } | |
6815 | } | |
6816 | /* We only print out user settable breakpoints unless the | |
6817 | allflag is set. */ | |
6818 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6819 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6820 | } |
6821 | ||
3b31d625 | 6822 | do_cleanups (bkpttbl_chain); |
698384cd | 6823 | |
7f3b0473 | 6824 | if (nr_printable_breakpoints == 0) |
c906108c | 6825 | { |
4a64f543 MS |
6826 | /* If there's a filter, let the caller decide how to report |
6827 | empty list. */ | |
d77f58be SS |
6828 | if (!filter) |
6829 | { | |
e5a67952 | 6830 | if (args == NULL || *args == '\0') |
d77f58be SS |
6831 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6832 | else | |
4a64f543 | 6833 | ui_out_message (uiout, 0, |
e5a67952 MS |
6834 | "No breakpoint or watchpoint matching '%s'.\n", |
6835 | args); | |
d77f58be | 6836 | } |
c906108c SS |
6837 | } |
6838 | else | |
c4093a6a | 6839 | { |
a6d9a66e UW |
6840 | if (last_loc && !server_command) |
6841 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6842 | } |
c906108c | 6843 | |
4a64f543 | 6844 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6845 | there have been breakpoints? */ |
c906108c | 6846 | annotate_breakpoints_table_end (); |
d77f58be SS |
6847 | |
6848 | return nr_printable_breakpoints; | |
c906108c SS |
6849 | } |
6850 | ||
ad443146 SS |
6851 | /* Display the value of default-collect in a way that is generally |
6852 | compatible with the breakpoint list. */ | |
6853 | ||
6854 | static void | |
6855 | default_collect_info (void) | |
6856 | { | |
79a45e25 PA |
6857 | struct ui_out *uiout = current_uiout; |
6858 | ||
ad443146 SS |
6859 | /* If it has no value (which is frequently the case), say nothing; a |
6860 | message like "No default-collect." gets in user's face when it's | |
6861 | not wanted. */ | |
6862 | if (!*default_collect) | |
6863 | return; | |
6864 | ||
6865 | /* The following phrase lines up nicely with per-tracepoint collect | |
6866 | actions. */ | |
6867 | ui_out_text (uiout, "default collect "); | |
6868 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6869 | ui_out_text (uiout, " \n"); | |
6870 | } | |
6871 | ||
c906108c | 6872 | static void |
e5a67952 | 6873 | breakpoints_info (char *args, int from_tty) |
c906108c | 6874 | { |
e5a67952 | 6875 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6876 | |
6877 | default_collect_info (); | |
d77f58be SS |
6878 | } |
6879 | ||
6880 | static void | |
e5a67952 | 6881 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6882 | { |
e5a67952 | 6883 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6884 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6885 | |
6886 | if (num_printed == 0) | |
6887 | { | |
e5a67952 | 6888 | if (args == NULL || *args == '\0') |
d77f58be SS |
6889 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6890 | else | |
e5a67952 | 6891 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6892 | } |
c906108c SS |
6893 | } |
6894 | ||
7a292a7a | 6895 | static void |
e5a67952 | 6896 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6897 | { |
e5a67952 | 6898 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6899 | |
6900 | default_collect_info (); | |
c906108c SS |
6901 | } |
6902 | ||
0d381245 | 6903 | static int |
714835d5 | 6904 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6905 | struct program_space *pspace, |
714835d5 | 6906 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6907 | { |
6908 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6909 | |
0d381245 VP |
6910 | for (; bl; bl = bl->next) |
6911 | { | |
6c95b8df PA |
6912 | if (bl->pspace == pspace |
6913 | && bl->address == pc | |
0d381245 VP |
6914 | && (!overlay_debugging || bl->section == section)) |
6915 | return 1; | |
6916 | } | |
6917 | return 0; | |
6918 | } | |
6919 | ||
672f9b60 | 6920 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6921 | concerns with logical breakpoints, so we match program spaces, not |
6922 | address spaces. */ | |
c906108c SS |
6923 | |
6924 | static void | |
6c95b8df PA |
6925 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6926 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6927 | struct obj_section *section, int thread) |
c906108c | 6928 | { |
52f0bd74 AC |
6929 | int others = 0; |
6930 | struct breakpoint *b; | |
c906108c SS |
6931 | |
6932 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6933 | others += (user_breakpoint_p (b) |
6934 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6935 | if (others > 0) |
6936 | { | |
a3f17187 AC |
6937 | if (others == 1) |
6938 | printf_filtered (_("Note: breakpoint ")); | |
6939 | else /* if (others == ???) */ | |
6940 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6941 | ALL_BREAKPOINTS (b) |
672f9b60 | 6942 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6943 | { |
6944 | others--; | |
6945 | printf_filtered ("%d", b->number); | |
6946 | if (b->thread == -1 && thread != -1) | |
6947 | printf_filtered (" (all threads)"); | |
6948 | else if (b->thread != -1) | |
6949 | printf_filtered (" (thread %d)", b->thread); | |
6950 | printf_filtered ("%s%s ", | |
059fb39f | 6951 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6952 | || b->enable_state == bp_call_disabled) |
0d381245 | 6953 | ? " (disabled)" |
0d381245 VP |
6954 | : ""), |
6955 | (others > 1) ? "," | |
6956 | : ((others == 1) ? " and" : "")); | |
6957 | } | |
a3f17187 | 6958 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6959 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6960 | printf_filtered (".\n"); |
6961 | } | |
6962 | } | |
6963 | \f | |
c906108c | 6964 | |
e4f237da | 6965 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6966 | BPT locations. For some breakpoint types, the locations' address members |
6967 | are irrelevant and it makes no sense to attempt to compare them to other | |
6968 | addresses (or use them for any other purpose either). | |
e4f237da | 6969 | |
4a64f543 | 6970 | More specifically, each of the following breakpoint types will |
244558af | 6971 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6972 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6973 | breakpoint location at address zero: |
e4f237da KB |
6974 | |
6975 | bp_watchpoint | |
2d134ed3 PA |
6976 | bp_catchpoint |
6977 | ||
6978 | */ | |
e4f237da KB |
6979 | |
6980 | static int | |
6981 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6982 | { | |
6983 | enum bptype type = bpt->type; | |
6984 | ||
2d134ed3 PA |
6985 | return (type != bp_watchpoint && type != bp_catchpoint); |
6986 | } | |
6987 | ||
6988 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6989 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6990 | ||
6991 | static int | |
4a64f543 MS |
6992 | watchpoint_locations_match (struct bp_location *loc1, |
6993 | struct bp_location *loc2) | |
2d134ed3 | 6994 | { |
3a5c3e22 PA |
6995 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6996 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6997 | ||
6998 | /* Both of them must exist. */ | |
6999 | gdb_assert (w1 != NULL); | |
7000 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 7001 | |
4a64f543 MS |
7002 | /* If the target can evaluate the condition expression in hardware, |
7003 | then we we need to insert both watchpoints even if they are at | |
7004 | the same place. Otherwise the watchpoint will only trigger when | |
7005 | the condition of whichever watchpoint was inserted evaluates to | |
7006 | true, not giving a chance for GDB to check the condition of the | |
7007 | other watchpoint. */ | |
3a5c3e22 | 7008 | if ((w1->cond_exp |
4a64f543 MS |
7009 | && target_can_accel_watchpoint_condition (loc1->address, |
7010 | loc1->length, | |
0cf6dd15 | 7011 | loc1->watchpoint_type, |
3a5c3e22 PA |
7012 | w1->cond_exp)) |
7013 | || (w2->cond_exp | |
4a64f543 MS |
7014 | && target_can_accel_watchpoint_condition (loc2->address, |
7015 | loc2->length, | |
0cf6dd15 | 7016 | loc2->watchpoint_type, |
3a5c3e22 | 7017 | w2->cond_exp))) |
0cf6dd15 TJB |
7018 | return 0; |
7019 | ||
85d721b8 PA |
7020 | /* Note that this checks the owner's type, not the location's. In |
7021 | case the target does not support read watchpoints, but does | |
7022 | support access watchpoints, we'll have bp_read_watchpoint | |
7023 | watchpoints with hw_access locations. Those should be considered | |
7024 | duplicates of hw_read locations. The hw_read locations will | |
7025 | become hw_access locations later. */ | |
2d134ed3 PA |
7026 | return (loc1->owner->type == loc2->owner->type |
7027 | && loc1->pspace->aspace == loc2->pspace->aspace | |
7028 | && loc1->address == loc2->address | |
7029 | && loc1->length == loc2->length); | |
e4f237da KB |
7030 | } |
7031 | ||
31e77af2 | 7032 | /* See breakpoint.h. */ |
6c95b8df | 7033 | |
31e77af2 | 7034 | int |
6c95b8df PA |
7035 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
7036 | struct address_space *aspace2, CORE_ADDR addr2) | |
7037 | { | |
f5656ead | 7038 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
7039 | || aspace1 == aspace2) |
7040 | && addr1 == addr2); | |
7041 | } | |
7042 | ||
f1310107 TJB |
7043 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
7044 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
7045 | matches ASPACE2. On targets that have global breakpoints, the address | |
7046 | space doesn't really matter. */ | |
7047 | ||
7048 | static int | |
7049 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
7050 | int len1, struct address_space *aspace2, | |
7051 | CORE_ADDR addr2) | |
7052 | { | |
f5656ead | 7053 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7054 | || aspace1 == aspace2) |
7055 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7056 | } | |
7057 | ||
7058 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7059 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7060 | matches the breakpoint's address space. On targets that have global | |
7061 | breakpoints, the address space doesn't really matter. */ | |
7062 | ||
7063 | static int | |
7064 | breakpoint_location_address_match (struct bp_location *bl, | |
7065 | struct address_space *aspace, | |
7066 | CORE_ADDR addr) | |
7067 | { | |
7068 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7069 | aspace, addr) | |
7070 | || (bl->length | |
7071 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7072 | bl->address, bl->length, | |
7073 | aspace, addr))); | |
7074 | } | |
7075 | ||
1e4d1764 YQ |
7076 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7077 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7078 | true, otherwise returns false. */ | |
7079 | ||
7080 | static int | |
7081 | tracepoint_locations_match (struct bp_location *loc1, | |
7082 | struct bp_location *loc2) | |
7083 | { | |
7084 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7085 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7086 | locations at the same address of different tracepoints are regarded as | |
7087 | different locations. */ | |
7088 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7089 | else | |
7090 | return 0; | |
7091 | } | |
7092 | ||
2d134ed3 PA |
7093 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
7094 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
7095 | represent the same location. */ | |
7096 | ||
7097 | static int | |
4a64f543 MS |
7098 | breakpoint_locations_match (struct bp_location *loc1, |
7099 | struct bp_location *loc2) | |
2d134ed3 | 7100 | { |
2bdf28a0 JK |
7101 | int hw_point1, hw_point2; |
7102 | ||
7103 | /* Both of them must not be in moribund_locations. */ | |
7104 | gdb_assert (loc1->owner != NULL); | |
7105 | gdb_assert (loc2->owner != NULL); | |
7106 | ||
7107 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7108 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7109 | |
7110 | if (hw_point1 != hw_point2) | |
7111 | return 0; | |
7112 | else if (hw_point1) | |
7113 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7114 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7115 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7116 | else |
f1310107 TJB |
7117 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
7118 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
7119 | loc2->pspace->aspace, loc2->address) | |
7120 | && loc1->length == loc2->length); | |
2d134ed3 PA |
7121 | } |
7122 | ||
76897487 KB |
7123 | static void |
7124 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
7125 | int bnum, int have_bnum) | |
7126 | { | |
f63fbe86 MS |
7127 | /* The longest string possibly returned by hex_string_custom |
7128 | is 50 chars. These must be at least that big for safety. */ | |
7129 | char astr1[64]; | |
7130 | char astr2[64]; | |
76897487 | 7131 | |
bb599908 PH |
7132 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7133 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7134 | if (have_bnum) |
8a3fe4f8 | 7135 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7136 | bnum, astr1, astr2); |
7137 | else | |
8a3fe4f8 | 7138 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7139 | } |
7140 | ||
4a64f543 MS |
7141 | /* Adjust a breakpoint's address to account for architectural |
7142 | constraints on breakpoint placement. Return the adjusted address. | |
7143 | Note: Very few targets require this kind of adjustment. For most | |
7144 | targets, this function is simply the identity function. */ | |
76897487 KB |
7145 | |
7146 | static CORE_ADDR | |
a6d9a66e UW |
7147 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7148 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7149 | { |
a6d9a66e | 7150 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7151 | { |
7152 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7153 | return bpaddr; | |
7154 | } | |
88f7da05 KB |
7155 | else if (bptype == bp_watchpoint |
7156 | || bptype == bp_hardware_watchpoint | |
7157 | || bptype == bp_read_watchpoint | |
7158 | || bptype == bp_access_watchpoint | |
fe798b75 | 7159 | || bptype == bp_catchpoint) |
88f7da05 KB |
7160 | { |
7161 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7162 | have their addresses modified. */ | |
7163 | return bpaddr; | |
7164 | } | |
7c16b83e PA |
7165 | else if (bptype == bp_single_step) |
7166 | { | |
7167 | /* Single-step breakpoints should not have their addresses | |
7168 | modified. If there's any architectural constrain that | |
7169 | applies to this address, then it should have already been | |
7170 | taken into account when the breakpoint was created in the | |
7171 | first place. If we didn't do this, stepping through e.g., | |
7172 | Thumb-2 IT blocks would break. */ | |
7173 | return bpaddr; | |
7174 | } | |
76897487 KB |
7175 | else |
7176 | { | |
7177 | CORE_ADDR adjusted_bpaddr; | |
7178 | ||
7179 | /* Some targets have architectural constraints on the placement | |
7180 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7181 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7182 | |
7183 | /* An adjusted breakpoint address can significantly alter | |
7184 | a user's expectations. Print a warning if an adjustment | |
7185 | is required. */ | |
7186 | if (adjusted_bpaddr != bpaddr) | |
7187 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7188 | ||
7189 | return adjusted_bpaddr; | |
7190 | } | |
7191 | } | |
7192 | ||
28010a5d PA |
7193 | void |
7194 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
7195 | struct breakpoint *owner) | |
7cc221ef | 7196 | { |
7cc221ef DJ |
7197 | memset (loc, 0, sizeof (*loc)); |
7198 | ||
348d480f PA |
7199 | gdb_assert (ops != NULL); |
7200 | ||
28010a5d PA |
7201 | loc->ops = ops; |
7202 | loc->owner = owner; | |
511a6cd4 | 7203 | loc->cond = NULL; |
b775012e | 7204 | loc->cond_bytecode = NULL; |
0d381245 VP |
7205 | loc->shlib_disabled = 0; |
7206 | loc->enabled = 1; | |
e049a4b5 | 7207 | |
28010a5d | 7208 | switch (owner->type) |
e049a4b5 DJ |
7209 | { |
7210 | case bp_breakpoint: | |
7c16b83e | 7211 | case bp_single_step: |
e049a4b5 DJ |
7212 | case bp_until: |
7213 | case bp_finish: | |
7214 | case bp_longjmp: | |
7215 | case bp_longjmp_resume: | |
e2e4d78b | 7216 | case bp_longjmp_call_dummy: |
186c406b TT |
7217 | case bp_exception: |
7218 | case bp_exception_resume: | |
e049a4b5 | 7219 | case bp_step_resume: |
2c03e5be | 7220 | case bp_hp_step_resume: |
e049a4b5 DJ |
7221 | case bp_watchpoint_scope: |
7222 | case bp_call_dummy: | |
aa7d318d | 7223 | case bp_std_terminate: |
e049a4b5 DJ |
7224 | case bp_shlib_event: |
7225 | case bp_thread_event: | |
7226 | case bp_overlay_event: | |
4efc6507 | 7227 | case bp_jit_event: |
0fd8e87f | 7228 | case bp_longjmp_master: |
aa7d318d | 7229 | case bp_std_terminate_master: |
186c406b | 7230 | case bp_exception_master: |
0e30163f JK |
7231 | case bp_gnu_ifunc_resolver: |
7232 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7233 | case bp_dprintf: |
e049a4b5 | 7234 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7235 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7236 | break; |
7237 | case bp_hardware_breakpoint: | |
7238 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7239 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7240 | break; |
7241 | case bp_hardware_watchpoint: | |
7242 | case bp_read_watchpoint: | |
7243 | case bp_access_watchpoint: | |
7244 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7245 | break; | |
7246 | case bp_watchpoint: | |
ce78b96d | 7247 | case bp_catchpoint: |
15c3d785 PA |
7248 | case bp_tracepoint: |
7249 | case bp_fast_tracepoint: | |
0fb4aa4b | 7250 | case bp_static_tracepoint: |
e049a4b5 DJ |
7251 | loc->loc_type = bp_loc_other; |
7252 | break; | |
7253 | default: | |
e2e0b3e5 | 7254 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7255 | } |
7256 | ||
f431efe5 | 7257 | loc->refc = 1; |
28010a5d PA |
7258 | } |
7259 | ||
7260 | /* Allocate a struct bp_location. */ | |
7261 | ||
7262 | static struct bp_location * | |
7263 | allocate_bp_location (struct breakpoint *bpt) | |
7264 | { | |
348d480f PA |
7265 | return bpt->ops->allocate_location (bpt); |
7266 | } | |
7cc221ef | 7267 | |
f431efe5 PA |
7268 | static void |
7269 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7270 | { |
348d480f | 7271 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
7272 | xfree (loc); |
7273 | } | |
7274 | ||
f431efe5 PA |
7275 | /* Increment reference count. */ |
7276 | ||
7277 | static void | |
7278 | incref_bp_location (struct bp_location *bl) | |
7279 | { | |
7280 | ++bl->refc; | |
7281 | } | |
7282 | ||
7283 | /* Decrement reference count. If the reference count reaches 0, | |
7284 | destroy the bp_location. Sets *BLP to NULL. */ | |
7285 | ||
7286 | static void | |
7287 | decref_bp_location (struct bp_location **blp) | |
7288 | { | |
0807b50c PA |
7289 | gdb_assert ((*blp)->refc > 0); |
7290 | ||
f431efe5 PA |
7291 | if (--(*blp)->refc == 0) |
7292 | free_bp_location (*blp); | |
7293 | *blp = NULL; | |
7294 | } | |
7295 | ||
346774a9 | 7296 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7297 | |
346774a9 PA |
7298 | static void |
7299 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 7300 | { |
346774a9 | 7301 | struct breakpoint *b1; |
c906108c | 7302 | |
346774a9 PA |
7303 | /* Add this breakpoint to the end of the chain so that a list of |
7304 | breakpoints will come out in order of increasing numbers. */ | |
7305 | ||
7306 | b1 = breakpoint_chain; | |
7307 | if (b1 == 0) | |
7308 | breakpoint_chain = b; | |
7309 | else | |
7310 | { | |
7311 | while (b1->next) | |
7312 | b1 = b1->next; | |
7313 | b1->next = b; | |
7314 | } | |
7315 | } | |
7316 | ||
7317 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7318 | ||
7319 | static void | |
7320 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7321 | struct gdbarch *gdbarch, | |
28010a5d | 7322 | enum bptype bptype, |
c0a91b2b | 7323 | const struct breakpoint_ops *ops) |
346774a9 | 7324 | { |
c906108c | 7325 | memset (b, 0, sizeof (*b)); |
2219d63c | 7326 | |
348d480f PA |
7327 | gdb_assert (ops != NULL); |
7328 | ||
28010a5d | 7329 | b->ops = ops; |
4d28f7a8 | 7330 | b->type = bptype; |
a6d9a66e | 7331 | b->gdbarch = gdbarch; |
c906108c SS |
7332 | b->language = current_language->la_language; |
7333 | b->input_radix = input_radix; | |
7334 | b->thread = -1; | |
b5de0fa7 | 7335 | b->enable_state = bp_enabled; |
c906108c SS |
7336 | b->next = 0; |
7337 | b->silent = 0; | |
7338 | b->ignore_count = 0; | |
7339 | b->commands = NULL; | |
818dd999 | 7340 | b->frame_id = null_frame_id; |
0d381245 | 7341 | b->condition_not_parsed = 0; |
84f4c1fe | 7342 | b->py_bp_object = NULL; |
d0fb5eae | 7343 | b->related_breakpoint = b; |
f00aae0f | 7344 | b->location = NULL; |
346774a9 PA |
7345 | } |
7346 | ||
7347 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7348 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7349 | |
7350 | static struct breakpoint * | |
7351 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7352 | enum bptype bptype, |
c0a91b2b | 7353 | const struct breakpoint_ops *ops) |
346774a9 PA |
7354 | { |
7355 | struct breakpoint *b = XNEW (struct breakpoint); | |
7356 | ||
348d480f | 7357 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 7358 | add_to_breakpoint_chain (b); |
0d381245 VP |
7359 | return b; |
7360 | } | |
7361 | ||
0e30163f JK |
7362 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7363 | resolutions should be made as the user specified the location explicitly | |
7364 | enough. */ | |
7365 | ||
0d381245 | 7366 | static void |
0e30163f | 7367 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7368 | { |
2bdf28a0 JK |
7369 | gdb_assert (loc->owner != NULL); |
7370 | ||
0d381245 | 7371 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7372 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7373 | || is_tracepoint (loc->owner)) |
0d381245 | 7374 | { |
0e30163f | 7375 | int is_gnu_ifunc; |
2c02bd72 | 7376 | const char *function_name; |
6a3a010b | 7377 | CORE_ADDR func_addr; |
0e30163f | 7378 | |
2c02bd72 | 7379 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7380 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7381 | |
7382 | if (is_gnu_ifunc && !explicit_loc) | |
7383 | { | |
7384 | struct breakpoint *b = loc->owner; | |
7385 | ||
7386 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7387 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7388 | &loc->requested_address)) |
7389 | { | |
7390 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7391 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7392 | loc->requested_address, | |
7393 | b->type); | |
7394 | } | |
7395 | else if (b->type == bp_breakpoint && b->loc == loc | |
7396 | && loc->next == NULL && b->related_breakpoint == b) | |
7397 | { | |
7398 | /* Create only the whole new breakpoint of this type but do not | |
7399 | mess more complicated breakpoints with multiple locations. */ | |
7400 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7401 | /* Remember the resolver's address for use by the return |
7402 | breakpoint. */ | |
7403 | loc->related_address = func_addr; | |
0e30163f JK |
7404 | } |
7405 | } | |
7406 | ||
2c02bd72 DE |
7407 | if (function_name) |
7408 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7409 | } |
7410 | } | |
7411 | ||
a6d9a66e | 7412 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7413 | struct gdbarch * |
a6d9a66e UW |
7414 | get_sal_arch (struct symtab_and_line sal) |
7415 | { | |
7416 | if (sal.section) | |
7417 | return get_objfile_arch (sal.section->objfile); | |
7418 | if (sal.symtab) | |
eb822aa6 | 7419 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7420 | |
7421 | return NULL; | |
7422 | } | |
7423 | ||
346774a9 PA |
7424 | /* Low level routine for partially initializing a breakpoint of type |
7425 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7426 | file name, and line number are provided by SAL. |
0d381245 VP |
7427 | |
7428 | It is expected that the caller will complete the initialization of | |
7429 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7430 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7431 | |
346774a9 PA |
7432 | static void |
7433 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7434 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7435 | const struct breakpoint_ops *ops) |
0d381245 | 7436 | { |
28010a5d | 7437 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7438 | |
3742cc8b | 7439 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7440 | |
6c95b8df PA |
7441 | if (bptype != bp_catchpoint) |
7442 | gdb_assert (sal.pspace != NULL); | |
7443 | ||
f8eba3c6 TT |
7444 | /* Store the program space that was used to set the breakpoint, |
7445 | except for ordinary breakpoints, which are independent of the | |
7446 | program space. */ | |
7447 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7448 | b->pspace = sal.pspace; | |
346774a9 | 7449 | } |
c906108c | 7450 | |
346774a9 PA |
7451 | /* set_raw_breakpoint is a low level routine for allocating and |
7452 | partially initializing a breakpoint of type BPTYPE. The newly | |
7453 | created breakpoint's address, section, source file name, and line | |
7454 | number are provided by SAL. The newly created and partially | |
7455 | initialized breakpoint is added to the breakpoint chain and | |
7456 | is also returned as the value of this function. | |
7457 | ||
7458 | It is expected that the caller will complete the initialization of | |
7459 | the newly created breakpoint struct as well as output any status | |
7460 | information regarding the creation of a new breakpoint. In | |
7461 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7462 | number! Care should be taken to not allow an error to occur | |
7463 | prior to completing the initialization of the breakpoint. If this | |
7464 | should happen, a bogus breakpoint will be left on the chain. */ | |
7465 | ||
7466 | struct breakpoint * | |
7467 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7468 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7469 | const struct breakpoint_ops *ops) |
346774a9 PA |
7470 | { |
7471 | struct breakpoint *b = XNEW (struct breakpoint); | |
7472 | ||
348d480f | 7473 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7474 | add_to_breakpoint_chain (b); |
c906108c SS |
7475 | return b; |
7476 | } | |
7477 | ||
53a5351d | 7478 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7479 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7480 | initiated the operation. */ | |
c906108c SS |
7481 | |
7482 | void | |
186c406b | 7483 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7484 | { |
35df4500 | 7485 | struct breakpoint *b, *b_tmp; |
186c406b | 7486 | int thread = tp->num; |
0fd8e87f UW |
7487 | |
7488 | /* To avoid having to rescan all objfile symbols at every step, | |
7489 | we maintain a list of continually-inserted but always disabled | |
7490 | longjmp "master" breakpoints. Here, we simply create momentary | |
7491 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7492 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7493 | if (b->pspace == current_program_space |
186c406b TT |
7494 | && (b->type == bp_longjmp_master |
7495 | || b->type == bp_exception_master)) | |
0fd8e87f | 7496 | { |
06edf0c0 PA |
7497 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7498 | struct breakpoint *clone; | |
cc59ec59 | 7499 | |
e2e4d78b JK |
7500 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7501 | after their removal. */ | |
06edf0c0 | 7502 | clone = momentary_breakpoint_from_master (b, type, |
a1aa2221 | 7503 | &longjmp_breakpoint_ops, 1); |
0fd8e87f UW |
7504 | clone->thread = thread; |
7505 | } | |
186c406b TT |
7506 | |
7507 | tp->initiating_frame = frame; | |
c906108c SS |
7508 | } |
7509 | ||
611c83ae | 7510 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7511 | void |
611c83ae | 7512 | delete_longjmp_breakpoint (int thread) |
c906108c | 7513 | { |
35df4500 | 7514 | struct breakpoint *b, *b_tmp; |
c906108c | 7515 | |
35df4500 | 7516 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7517 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7518 | { |
7519 | if (b->thread == thread) | |
7520 | delete_breakpoint (b); | |
7521 | } | |
c906108c SS |
7522 | } |
7523 | ||
f59f708a PA |
7524 | void |
7525 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7526 | { | |
7527 | struct breakpoint *b, *b_tmp; | |
7528 | ||
7529 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7530 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7531 | { | |
7532 | if (b->thread == thread) | |
7533 | b->disposition = disp_del_at_next_stop; | |
7534 | } | |
7535 | } | |
7536 | ||
e2e4d78b JK |
7537 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7538 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7539 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7540 | breakpoints. */ | |
7541 | ||
7542 | struct breakpoint * | |
7543 | set_longjmp_breakpoint_for_call_dummy (void) | |
7544 | { | |
7545 | struct breakpoint *b, *retval = NULL; | |
7546 | ||
7547 | ALL_BREAKPOINTS (b) | |
7548 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7549 | { | |
7550 | struct breakpoint *new_b; | |
7551 | ||
7552 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7553 | &momentary_breakpoint_ops, |
7554 | 1); | |
e2e4d78b JK |
7555 | new_b->thread = pid_to_thread_id (inferior_ptid); |
7556 | ||
7557 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7558 | ||
7559 | gdb_assert (new_b->related_breakpoint == new_b); | |
7560 | if (retval == NULL) | |
7561 | retval = new_b; | |
7562 | new_b->related_breakpoint = retval; | |
7563 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7564 | retval = retval->related_breakpoint; | |
7565 | retval->related_breakpoint = new_b; | |
7566 | } | |
7567 | ||
7568 | return retval; | |
7569 | } | |
7570 | ||
7571 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7572 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7573 | stack. |
7574 | ||
7575 | You should call this function only at places where it is safe to currently | |
7576 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7577 | frames. */ | |
7578 | ||
7579 | void | |
b67a2c6f | 7580 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7581 | { |
7582 | struct breakpoint *b, *b_tmp; | |
7583 | ||
7584 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
b67a2c6f | 7585 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->num) |
e2e4d78b JK |
7586 | { |
7587 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7588 | ||
7589 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7590 | dummy_b = dummy_b->related_breakpoint; | |
7591 | if (dummy_b->type != bp_call_dummy | |
7592 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7593 | continue; | |
7594 | ||
b67a2c6f | 7595 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7596 | |
7597 | while (b->related_breakpoint != b) | |
7598 | { | |
7599 | if (b_tmp == b->related_breakpoint) | |
7600 | b_tmp = b->related_breakpoint->next; | |
7601 | delete_breakpoint (b->related_breakpoint); | |
7602 | } | |
7603 | delete_breakpoint (b); | |
7604 | } | |
7605 | } | |
7606 | ||
1900040c MS |
7607 | void |
7608 | enable_overlay_breakpoints (void) | |
7609 | { | |
52f0bd74 | 7610 | struct breakpoint *b; |
1900040c MS |
7611 | |
7612 | ALL_BREAKPOINTS (b) | |
7613 | if (b->type == bp_overlay_event) | |
7614 | { | |
7615 | b->enable_state = bp_enabled; | |
44702360 | 7616 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7617 | overlay_events_enabled = 1; |
1900040c MS |
7618 | } |
7619 | } | |
7620 | ||
7621 | void | |
7622 | disable_overlay_breakpoints (void) | |
7623 | { | |
52f0bd74 | 7624 | struct breakpoint *b; |
1900040c MS |
7625 | |
7626 | ALL_BREAKPOINTS (b) | |
7627 | if (b->type == bp_overlay_event) | |
7628 | { | |
7629 | b->enable_state = bp_disabled; | |
44702360 | 7630 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7631 | overlay_events_enabled = 0; |
1900040c MS |
7632 | } |
7633 | } | |
7634 | ||
aa7d318d TT |
7635 | /* Set an active std::terminate breakpoint for each std::terminate |
7636 | master breakpoint. */ | |
7637 | void | |
7638 | set_std_terminate_breakpoint (void) | |
7639 | { | |
35df4500 | 7640 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7641 | |
35df4500 | 7642 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7643 | if (b->pspace == current_program_space |
7644 | && b->type == bp_std_terminate_master) | |
7645 | { | |
06edf0c0 | 7646 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7647 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7648 | } |
7649 | } | |
7650 | ||
7651 | /* Delete all the std::terminate breakpoints. */ | |
7652 | void | |
7653 | delete_std_terminate_breakpoint (void) | |
7654 | { | |
35df4500 | 7655 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7656 | |
35df4500 | 7657 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7658 | if (b->type == bp_std_terminate) |
7659 | delete_breakpoint (b); | |
7660 | } | |
7661 | ||
c4093a6a | 7662 | struct breakpoint * |
a6d9a66e | 7663 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7664 | { |
7665 | struct breakpoint *b; | |
c4093a6a | 7666 | |
06edf0c0 PA |
7667 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7668 | &internal_breakpoint_ops); | |
7669 | ||
b5de0fa7 | 7670 | b->enable_state = bp_enabled; |
f00aae0f | 7671 | /* location has to be used or breakpoint_re_set will delete me. */ |
a06efdd6 | 7672 | b->location = new_address_location (b->loc->address); |
c4093a6a | 7673 | |
44702360 | 7674 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7675 | |
c4093a6a JM |
7676 | return b; |
7677 | } | |
7678 | ||
7679 | void | |
7680 | remove_thread_event_breakpoints (void) | |
7681 | { | |
35df4500 | 7682 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7683 | |
35df4500 | 7684 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7685 | if (b->type == bp_thread_event |
7686 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7687 | delete_breakpoint (b); |
7688 | } | |
7689 | ||
0101ce28 JJ |
7690 | struct lang_and_radix |
7691 | { | |
7692 | enum language lang; | |
7693 | int radix; | |
7694 | }; | |
7695 | ||
4efc6507 DE |
7696 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7697 | ||
7698 | struct breakpoint * | |
7699 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7700 | { | |
7701 | struct breakpoint *b; | |
7702 | ||
06edf0c0 PA |
7703 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7704 | &internal_breakpoint_ops); | |
44702360 | 7705 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
4efc6507 DE |
7706 | return b; |
7707 | } | |
0101ce28 | 7708 | |
03673fc7 PP |
7709 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7710 | ||
7711 | void | |
7712 | remove_jit_event_breakpoints (void) | |
7713 | { | |
7714 | struct breakpoint *b, *b_tmp; | |
7715 | ||
7716 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7717 | if (b->type == bp_jit_event | |
7718 | && b->loc->pspace == current_program_space) | |
7719 | delete_breakpoint (b); | |
7720 | } | |
7721 | ||
cae688ec JJ |
7722 | void |
7723 | remove_solib_event_breakpoints (void) | |
7724 | { | |
35df4500 | 7725 | struct breakpoint *b, *b_tmp; |
cae688ec | 7726 | |
35df4500 | 7727 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7728 | if (b->type == bp_shlib_event |
7729 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7730 | delete_breakpoint (b); |
7731 | } | |
7732 | ||
f37f681c PA |
7733 | /* See breakpoint.h. */ |
7734 | ||
7735 | void | |
7736 | remove_solib_event_breakpoints_at_next_stop (void) | |
7737 | { | |
7738 | struct breakpoint *b, *b_tmp; | |
7739 | ||
7740 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7741 | if (b->type == bp_shlib_event | |
7742 | && b->loc->pspace == current_program_space) | |
7743 | b->disposition = disp_del_at_next_stop; | |
7744 | } | |
7745 | ||
04086b45 PA |
7746 | /* Helper for create_solib_event_breakpoint / |
7747 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7748 | INSERT_MODE to pass through to update_global_location_list. */ | |
7749 | ||
7750 | static struct breakpoint * | |
7751 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7752 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7753 | { |
7754 | struct breakpoint *b; | |
7755 | ||
06edf0c0 PA |
7756 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7757 | &internal_breakpoint_ops); | |
04086b45 | 7758 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7759 | return b; |
7760 | } | |
7761 | ||
04086b45 PA |
7762 | struct breakpoint * |
7763 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7764 | { | |
7765 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7766 | } | |
7767 | ||
f37f681c PA |
7768 | /* See breakpoint.h. */ |
7769 | ||
7770 | struct breakpoint * | |
7771 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7772 | { | |
7773 | struct breakpoint *b; | |
7774 | ||
04086b45 PA |
7775 | /* Explicitly tell update_global_location_list to insert |
7776 | locations. */ | |
7777 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7778 | if (!b->loc->inserted) |
7779 | { | |
7780 | delete_breakpoint (b); | |
7781 | return NULL; | |
7782 | } | |
7783 | return b; | |
7784 | } | |
7785 | ||
cae688ec JJ |
7786 | /* Disable any breakpoints that are on code in shared libraries. Only |
7787 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7788 | ||
7789 | void | |
cb851954 | 7790 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7791 | { |
876fa593 | 7792 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7793 | |
876fa593 | 7794 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7795 | { |
2bdf28a0 | 7796 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7797 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7798 | |
4a64f543 MS |
7799 | /* We apply the check to all breakpoints, including disabled for |
7800 | those with loc->duplicate set. This is so that when breakpoint | |
7801 | becomes enabled, or the duplicate is removed, gdb will try to | |
7802 | insert all breakpoints. If we don't set shlib_disabled here, | |
7803 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7804 | if (((b->type == bp_breakpoint) |
508ccb1f | 7805 | || (b->type == bp_jit_event) |
1042e4c0 | 7806 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7807 | || (is_tracepoint (b))) |
6c95b8df | 7808 | && loc->pspace == current_program_space |
0d381245 | 7809 | && !loc->shlib_disabled |
6c95b8df | 7810 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7811 | ) |
0d381245 VP |
7812 | { |
7813 | loc->shlib_disabled = 1; | |
7814 | } | |
cae688ec JJ |
7815 | } |
7816 | } | |
7817 | ||
63644780 NB |
7818 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7819 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7820 | disabled ones can just stay disabled. */ | |
84acb35a | 7821 | |
75149521 | 7822 | static void |
84acb35a JJ |
7823 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7824 | { | |
876fa593 | 7825 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7826 | int disabled_shlib_breaks = 0; |
7827 | ||
c86cf029 VP |
7828 | /* SunOS a.out shared libraries are always mapped, so do not |
7829 | disable breakpoints; they will only be reported as unloaded | |
7830 | through clear_solib when GDB discards its shared library | |
7831 | list. See clear_solib for more information. */ | |
7832 | if (exec_bfd != NULL | |
7833 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7834 | return; | |
7835 | ||
876fa593 | 7836 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7837 | { |
2bdf28a0 | 7838 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7839 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7840 | |
1e4d1764 | 7841 | if (solib->pspace == loc->pspace |
e2dd7057 | 7842 | && !loc->shlib_disabled |
1e4d1764 YQ |
7843 | && (((b->type == bp_breakpoint |
7844 | || b->type == bp_jit_event | |
7845 | || b->type == bp_hardware_breakpoint) | |
7846 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7847 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7848 | || is_tracepoint (b)) | |
e2dd7057 | 7849 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7850 | { |
e2dd7057 PP |
7851 | loc->shlib_disabled = 1; |
7852 | /* At this point, we cannot rely on remove_breakpoint | |
7853 | succeeding so we must mark the breakpoint as not inserted | |
7854 | to prevent future errors occurring in remove_breakpoints. */ | |
7855 | loc->inserted = 0; | |
8d3788bd VP |
7856 | |
7857 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7858 | observer_notify_breakpoint_modified (b); | |
7859 | ||
e2dd7057 PP |
7860 | if (!disabled_shlib_breaks) |
7861 | { | |
7862 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7863 | warning (_("Temporarily disabling breakpoints " |
7864 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7865 | solib->so_name); |
84acb35a | 7866 | } |
e2dd7057 | 7867 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7868 | } |
7869 | } | |
84acb35a JJ |
7870 | } |
7871 | ||
63644780 NB |
7872 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7873 | notification of free_objfile. Only apply to enabled breakpoints, | |
7874 | disabled ones can just stay disabled. */ | |
7875 | ||
7876 | static void | |
7877 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7878 | { | |
7879 | struct breakpoint *b; | |
7880 | ||
7881 | if (objfile == NULL) | |
7882 | return; | |
7883 | ||
d03de421 PA |
7884 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7885 | managed by the user with add-symbol-file/remove-symbol-file. | |
7886 | Similarly to how breakpoints in shared libraries are handled in | |
7887 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7888 | shlib_disabled so they end up uninserted on the next global |
7889 | location list update. Shared libraries not loaded by the user | |
7890 | aren't handled here -- they're already handled in | |
7891 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7892 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7893 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7894 | main objfile). */ | |
7895 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7896 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7897 | return; |
7898 | ||
7899 | ALL_BREAKPOINTS (b) | |
7900 | { | |
7901 | struct bp_location *loc; | |
7902 | int bp_modified = 0; | |
7903 | ||
7904 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7905 | continue; | |
7906 | ||
7907 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7908 | { | |
7909 | CORE_ADDR loc_addr = loc->address; | |
7910 | ||
7911 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7912 | && loc->loc_type != bp_loc_software_breakpoint) | |
7913 | continue; | |
7914 | ||
7915 | if (loc->shlib_disabled != 0) | |
7916 | continue; | |
7917 | ||
7918 | if (objfile->pspace != loc->pspace) | |
7919 | continue; | |
7920 | ||
7921 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7922 | && loc->loc_type != bp_loc_software_breakpoint) | |
7923 | continue; | |
7924 | ||
7925 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7926 | { | |
7927 | loc->shlib_disabled = 1; | |
08351840 PA |
7928 | /* At this point, we don't know whether the object was |
7929 | unmapped from the inferior or not, so leave the | |
7930 | inserted flag alone. We'll handle failure to | |
7931 | uninsert quietly, in case the object was indeed | |
7932 | unmapped. */ | |
63644780 NB |
7933 | |
7934 | mark_breakpoint_location_modified (loc); | |
7935 | ||
7936 | bp_modified = 1; | |
7937 | } | |
7938 | } | |
7939 | ||
7940 | if (bp_modified) | |
7941 | observer_notify_breakpoint_modified (b); | |
7942 | } | |
7943 | } | |
7944 | ||
ce78b96d JB |
7945 | /* FORK & VFORK catchpoints. */ |
7946 | ||
e29a4733 PA |
7947 | /* An instance of this type is used to represent a fork or vfork |
7948 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7949 | class; users downcast to "struct breakpoint *" when needed. A | |
7950 | breakpoint is really of this type iff its ops pointer points to | |
7951 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7952 | ||
7953 | struct fork_catchpoint | |
7954 | { | |
7955 | /* The base class. */ | |
7956 | struct breakpoint base; | |
7957 | ||
7958 | /* Process id of a child process whose forking triggered this | |
7959 | catchpoint. This field is only valid immediately after this | |
7960 | catchpoint has triggered. */ | |
7961 | ptid_t forked_inferior_pid; | |
7962 | }; | |
7963 | ||
4a64f543 MS |
7964 | /* Implement the "insert" breakpoint_ops method for fork |
7965 | catchpoints. */ | |
ce78b96d | 7966 | |
77b06cd7 TJB |
7967 | static int |
7968 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7969 | { |
dfd4cc63 | 7970 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7971 | } |
7972 | ||
4a64f543 MS |
7973 | /* Implement the "remove" breakpoint_ops method for fork |
7974 | catchpoints. */ | |
ce78b96d JB |
7975 | |
7976 | static int | |
77b06cd7 | 7977 | remove_catch_fork (struct bp_location *bl) |
ce78b96d | 7978 | { |
dfd4cc63 | 7979 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7980 | } |
7981 | ||
7982 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7983 | catchpoints. */ | |
7984 | ||
7985 | static int | |
f1310107 | 7986 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7987 | struct address_space *aspace, CORE_ADDR bp_addr, |
7988 | const struct target_waitstatus *ws) | |
ce78b96d | 7989 | { |
e29a4733 PA |
7990 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7991 | ||
f90263c1 TT |
7992 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7993 | return 0; | |
7994 | ||
7995 | c->forked_inferior_pid = ws->value.related_pid; | |
7996 | return 1; | |
ce78b96d JB |
7997 | } |
7998 | ||
4a64f543 MS |
7999 | /* Implement the "print_it" breakpoint_ops method for fork |
8000 | catchpoints. */ | |
ce78b96d JB |
8001 | |
8002 | static enum print_stop_action | |
348d480f | 8003 | print_it_catch_fork (bpstat bs) |
ce78b96d | 8004 | { |
36dfb11c | 8005 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8006 | struct breakpoint *b = bs->breakpoint_at; |
8007 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 8008 | |
ce78b96d | 8009 | annotate_catchpoint (b->number); |
36dfb11c TT |
8010 | if (b->disposition == disp_del) |
8011 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8012 | else | |
8013 | ui_out_text (uiout, "\nCatchpoint "); | |
8014 | if (ui_out_is_mi_like_p (uiout)) | |
8015 | { | |
8016 | ui_out_field_string (uiout, "reason", | |
8017 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
8018 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8019 | } | |
8020 | ui_out_field_int (uiout, "bkptno", b->number); | |
8021 | ui_out_text (uiout, " (forked process "); | |
8022 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8023 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8024 | return PRINT_SRC_AND_LOC; |
8025 | } | |
8026 | ||
4a64f543 MS |
8027 | /* Implement the "print_one" breakpoint_ops method for fork |
8028 | catchpoints. */ | |
ce78b96d JB |
8029 | |
8030 | static void | |
a6d9a66e | 8031 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8032 | { |
e29a4733 | 8033 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8034 | struct value_print_options opts; |
79a45e25 | 8035 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8036 | |
8037 | get_user_print_options (&opts); | |
8038 | ||
4a64f543 MS |
8039 | /* Field 4, the address, is omitted (which makes the columns not |
8040 | line up too nicely with the headers, but the effect is relatively | |
8041 | readable). */ | |
79a45b7d | 8042 | if (opts.addressprint) |
ce78b96d JB |
8043 | ui_out_field_skip (uiout, "addr"); |
8044 | annotate_field (5); | |
8045 | ui_out_text (uiout, "fork"); | |
e29a4733 | 8046 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8047 | { |
8048 | ui_out_text (uiout, ", process "); | |
8049 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8050 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8051 | ui_out_spaces (uiout, 1); |
8052 | } | |
8ac3646f TT |
8053 | |
8054 | if (ui_out_is_mi_like_p (uiout)) | |
8055 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
8056 | } |
8057 | ||
8058 | /* Implement the "print_mention" breakpoint_ops method for fork | |
8059 | catchpoints. */ | |
8060 | ||
8061 | static void | |
8062 | print_mention_catch_fork (struct breakpoint *b) | |
8063 | { | |
8064 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
8065 | } | |
8066 | ||
6149aea9 PA |
8067 | /* Implement the "print_recreate" breakpoint_ops method for fork |
8068 | catchpoints. */ | |
8069 | ||
8070 | static void | |
8071 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
8072 | { | |
8073 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 8074 | print_recreate_thread (b, fp); |
6149aea9 PA |
8075 | } |
8076 | ||
ce78b96d JB |
8077 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
8078 | ||
2060206e | 8079 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 8080 | |
4a64f543 MS |
8081 | /* Implement the "insert" breakpoint_ops method for vfork |
8082 | catchpoints. */ | |
ce78b96d | 8083 | |
77b06cd7 TJB |
8084 | static int |
8085 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 8086 | { |
dfd4cc63 | 8087 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8088 | } |
8089 | ||
4a64f543 MS |
8090 | /* Implement the "remove" breakpoint_ops method for vfork |
8091 | catchpoints. */ | |
ce78b96d JB |
8092 | |
8093 | static int | |
77b06cd7 | 8094 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d | 8095 | { |
dfd4cc63 | 8096 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8097 | } |
8098 | ||
8099 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
8100 | catchpoints. */ | |
8101 | ||
8102 | static int | |
f1310107 | 8103 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
8104 | struct address_space *aspace, CORE_ADDR bp_addr, |
8105 | const struct target_waitstatus *ws) | |
ce78b96d | 8106 | { |
e29a4733 PA |
8107 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8108 | ||
f90263c1 TT |
8109 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
8110 | return 0; | |
8111 | ||
8112 | c->forked_inferior_pid = ws->value.related_pid; | |
8113 | return 1; | |
ce78b96d JB |
8114 | } |
8115 | ||
4a64f543 MS |
8116 | /* Implement the "print_it" breakpoint_ops method for vfork |
8117 | catchpoints. */ | |
ce78b96d JB |
8118 | |
8119 | static enum print_stop_action | |
348d480f | 8120 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 8121 | { |
36dfb11c | 8122 | struct ui_out *uiout = current_uiout; |
348d480f | 8123 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
8124 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
8125 | ||
ce78b96d | 8126 | annotate_catchpoint (b->number); |
36dfb11c TT |
8127 | if (b->disposition == disp_del) |
8128 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8129 | else | |
8130 | ui_out_text (uiout, "\nCatchpoint "); | |
8131 | if (ui_out_is_mi_like_p (uiout)) | |
8132 | { | |
8133 | ui_out_field_string (uiout, "reason", | |
8134 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
8135 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8136 | } | |
8137 | ui_out_field_int (uiout, "bkptno", b->number); | |
8138 | ui_out_text (uiout, " (vforked process "); | |
8139 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8140 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8141 | return PRINT_SRC_AND_LOC; |
8142 | } | |
8143 | ||
4a64f543 MS |
8144 | /* Implement the "print_one" breakpoint_ops method for vfork |
8145 | catchpoints. */ | |
ce78b96d JB |
8146 | |
8147 | static void | |
a6d9a66e | 8148 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8149 | { |
e29a4733 | 8150 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8151 | struct value_print_options opts; |
79a45e25 | 8152 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8153 | |
8154 | get_user_print_options (&opts); | |
4a64f543 MS |
8155 | /* Field 4, the address, is omitted (which makes the columns not |
8156 | line up too nicely with the headers, but the effect is relatively | |
8157 | readable). */ | |
79a45b7d | 8158 | if (opts.addressprint) |
ce78b96d JB |
8159 | ui_out_field_skip (uiout, "addr"); |
8160 | annotate_field (5); | |
8161 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 8162 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8163 | { |
8164 | ui_out_text (uiout, ", process "); | |
8165 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8166 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8167 | ui_out_spaces (uiout, 1); |
8168 | } | |
8ac3646f TT |
8169 | |
8170 | if (ui_out_is_mi_like_p (uiout)) | |
8171 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
8172 | } |
8173 | ||
8174 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8175 | catchpoints. */ | |
8176 | ||
8177 | static void | |
8178 | print_mention_catch_vfork (struct breakpoint *b) | |
8179 | { | |
8180 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8181 | } | |
8182 | ||
6149aea9 PA |
8183 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8184 | catchpoints. */ | |
8185 | ||
8186 | static void | |
8187 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8188 | { | |
8189 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8190 | print_recreate_thread (b, fp); |
6149aea9 PA |
8191 | } |
8192 | ||
ce78b96d JB |
8193 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8194 | ||
2060206e | 8195 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8196 | |
edcc5120 TT |
8197 | /* An instance of this type is used to represent an solib catchpoint. |
8198 | It includes a "struct breakpoint" as a kind of base class; users | |
8199 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8200 | really of this type iff its ops pointer points to | |
8201 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
8202 | ||
8203 | struct solib_catchpoint | |
8204 | { | |
8205 | /* The base class. */ | |
8206 | struct breakpoint base; | |
8207 | ||
8208 | /* True for "catch load", false for "catch unload". */ | |
8209 | unsigned char is_load; | |
8210 | ||
8211 | /* Regular expression to match, if any. COMPILED is only valid when | |
8212 | REGEX is non-NULL. */ | |
8213 | char *regex; | |
8214 | regex_t compiled; | |
8215 | }; | |
8216 | ||
8217 | static void | |
8218 | dtor_catch_solib (struct breakpoint *b) | |
8219 | { | |
8220 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8221 | ||
8222 | if (self->regex) | |
8223 | regfree (&self->compiled); | |
8224 | xfree (self->regex); | |
8225 | ||
8226 | base_breakpoint_ops.dtor (b); | |
8227 | } | |
8228 | ||
8229 | static int | |
8230 | insert_catch_solib (struct bp_location *ignore) | |
8231 | { | |
8232 | return 0; | |
8233 | } | |
8234 | ||
8235 | static int | |
8236 | remove_catch_solib (struct bp_location *ignore) | |
8237 | { | |
8238 | return 0; | |
8239 | } | |
8240 | ||
8241 | static int | |
8242 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8243 | struct address_space *aspace, | |
8244 | CORE_ADDR bp_addr, | |
8245 | const struct target_waitstatus *ws) | |
8246 | { | |
8247 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8248 | struct breakpoint *other; | |
8249 | ||
8250 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8251 | return 1; | |
8252 | ||
8253 | ALL_BREAKPOINTS (other) | |
8254 | { | |
8255 | struct bp_location *other_bl; | |
8256 | ||
8257 | if (other == bl->owner) | |
8258 | continue; | |
8259 | ||
8260 | if (other->type != bp_shlib_event) | |
8261 | continue; | |
8262 | ||
8263 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
8264 | continue; | |
8265 | ||
8266 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8267 | { | |
8268 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8269 | return 1; | |
8270 | } | |
8271 | } | |
8272 | ||
8273 | return 0; | |
8274 | } | |
8275 | ||
8276 | static void | |
8277 | check_status_catch_solib (struct bpstats *bs) | |
8278 | { | |
8279 | struct solib_catchpoint *self | |
8280 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8281 | int ix; | |
8282 | ||
8283 | if (self->is_load) | |
8284 | { | |
8285 | struct so_list *iter; | |
8286 | ||
8287 | for (ix = 0; | |
8288 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8289 | ix, iter); | |
8290 | ++ix) | |
8291 | { | |
8292 | if (!self->regex | |
8293 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
8294 | return; | |
8295 | } | |
8296 | } | |
8297 | else | |
8298 | { | |
8299 | char *iter; | |
8300 | ||
8301 | for (ix = 0; | |
8302 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8303 | ix, iter); | |
8304 | ++ix) | |
8305 | { | |
8306 | if (!self->regex | |
8307 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
8308 | return; | |
8309 | } | |
8310 | } | |
8311 | ||
8312 | bs->stop = 0; | |
8313 | bs->print_it = print_it_noop; | |
8314 | } | |
8315 | ||
8316 | static enum print_stop_action | |
8317 | print_it_catch_solib (bpstat bs) | |
8318 | { | |
8319 | struct breakpoint *b = bs->breakpoint_at; | |
8320 | struct ui_out *uiout = current_uiout; | |
8321 | ||
8322 | annotate_catchpoint (b->number); | |
8323 | if (b->disposition == disp_del) | |
8324 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8325 | else | |
8326 | ui_out_text (uiout, "\nCatchpoint "); | |
8327 | ui_out_field_int (uiout, "bkptno", b->number); | |
8328 | ui_out_text (uiout, "\n"); | |
8329 | if (ui_out_is_mi_like_p (uiout)) | |
8330 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8331 | print_solib_event (1); | |
8332 | return PRINT_SRC_AND_LOC; | |
8333 | } | |
8334 | ||
8335 | static void | |
8336 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8337 | { | |
8338 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8339 | struct value_print_options opts; | |
8340 | struct ui_out *uiout = current_uiout; | |
8341 | char *msg; | |
8342 | ||
8343 | get_user_print_options (&opts); | |
8344 | /* Field 4, the address, is omitted (which makes the columns not | |
8345 | line up too nicely with the headers, but the effect is relatively | |
8346 | readable). */ | |
8347 | if (opts.addressprint) | |
8348 | { | |
8349 | annotate_field (4); | |
8350 | ui_out_field_skip (uiout, "addr"); | |
8351 | } | |
8352 | ||
8353 | annotate_field (5); | |
8354 | if (self->is_load) | |
8355 | { | |
8356 | if (self->regex) | |
8357 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8358 | else | |
8359 | msg = xstrdup (_("load of library")); | |
8360 | } | |
8361 | else | |
8362 | { | |
8363 | if (self->regex) | |
8364 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8365 | else | |
8366 | msg = xstrdup (_("unload of library")); | |
8367 | } | |
8368 | ui_out_field_string (uiout, "what", msg); | |
8369 | xfree (msg); | |
8ac3646f TT |
8370 | |
8371 | if (ui_out_is_mi_like_p (uiout)) | |
8372 | ui_out_field_string (uiout, "catch-type", | |
8373 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8374 | } |
8375 | ||
8376 | static void | |
8377 | print_mention_catch_solib (struct breakpoint *b) | |
8378 | { | |
8379 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8380 | ||
8381 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8382 | self->is_load ? "load" : "unload"); | |
8383 | } | |
8384 | ||
8385 | static void | |
8386 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8387 | { | |
8388 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8389 | ||
8390 | fprintf_unfiltered (fp, "%s %s", | |
8391 | b->disposition == disp_del ? "tcatch" : "catch", | |
8392 | self->is_load ? "load" : "unload"); | |
8393 | if (self->regex) | |
8394 | fprintf_unfiltered (fp, " %s", self->regex); | |
8395 | fprintf_unfiltered (fp, "\n"); | |
8396 | } | |
8397 | ||
8398 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8399 | ||
91985142 MG |
8400 | /* Shared helper function (MI and CLI) for creating and installing |
8401 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8402 | the events to be caught are load events, otherwise they are | |
8403 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8404 | temporary one. If ENABLED is non-zero the catchpoint is | |
8405 | created in an enabled state. */ | |
edcc5120 | 8406 | |
91985142 MG |
8407 | void |
8408 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
8409 | { |
8410 | struct solib_catchpoint *c; | |
8411 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
8412 | struct cleanup *cleanup; |
8413 | ||
edcc5120 TT |
8414 | if (!arg) |
8415 | arg = ""; | |
8416 | arg = skip_spaces (arg); | |
8417 | ||
8418 | c = XCNEW (struct solib_catchpoint); | |
8419 | cleanup = make_cleanup (xfree, c); | |
8420 | ||
8421 | if (*arg != '\0') | |
8422 | { | |
8423 | int errcode; | |
8424 | ||
8425 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
8426 | if (errcode != 0) | |
8427 | { | |
8428 | char *err = get_regcomp_error (errcode, &c->compiled); | |
8429 | ||
8430 | make_cleanup (xfree, err); | |
8431 | error (_("Invalid regexp (%s): %s"), err, arg); | |
8432 | } | |
8433 | c->regex = xstrdup (arg); | |
8434 | } | |
8435 | ||
8436 | c->is_load = is_load; | |
91985142 | 8437 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
8438 | &catch_solib_breakpoint_ops); |
8439 | ||
91985142 MG |
8440 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
8441 | ||
edcc5120 TT |
8442 | discard_cleanups (cleanup); |
8443 | install_breakpoint (0, &c->base, 1); | |
8444 | } | |
8445 | ||
91985142 MG |
8446 | /* A helper function that does all the work for "catch load" and |
8447 | "catch unload". */ | |
8448 | ||
8449 | static void | |
8450 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8451 | struct cmd_list_element *command) | |
8452 | { | |
8453 | int tempflag; | |
8454 | const int enabled = 1; | |
8455 | ||
8456 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8457 | ||
8458 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8459 | } | |
8460 | ||
edcc5120 TT |
8461 | static void |
8462 | catch_load_command_1 (char *arg, int from_tty, | |
8463 | struct cmd_list_element *command) | |
8464 | { | |
8465 | catch_load_or_unload (arg, from_tty, 1, command); | |
8466 | } | |
8467 | ||
8468 | static void | |
8469 | catch_unload_command_1 (char *arg, int from_tty, | |
8470 | struct cmd_list_element *command) | |
8471 | { | |
8472 | catch_load_or_unload (arg, from_tty, 0, command); | |
8473 | } | |
8474 | ||
346774a9 PA |
8475 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8476 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8477 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8478 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8479 | |
ab04a2af | 8480 | void |
346774a9 PA |
8481 | init_catchpoint (struct breakpoint *b, |
8482 | struct gdbarch *gdbarch, int tempflag, | |
8483 | char *cond_string, | |
c0a91b2b | 8484 | const struct breakpoint_ops *ops) |
c906108c | 8485 | { |
c5aa993b | 8486 | struct symtab_and_line sal; |
346774a9 | 8487 | |
fe39c653 | 8488 | init_sal (&sal); |
6c95b8df | 8489 | sal.pspace = current_program_space; |
c5aa993b | 8490 | |
28010a5d | 8491 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8492 | |
1b36a34b | 8493 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8494 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8495 | } |
8496 | ||
28010a5d | 8497 | void |
3ea46bff | 8498 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8499 | { |
8500 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8501 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8502 | if (is_tracepoint (b)) |
8503 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8504 | if (!internal) |
8505 | mention (b); | |
c56053d2 | 8506 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8507 | |
8508 | if (update_gll) | |
44702360 | 8509 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8510 | } |
8511 | ||
9b70b993 | 8512 | static void |
a6d9a66e UW |
8513 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8514 | int tempflag, char *cond_string, | |
c0a91b2b | 8515 | const struct breakpoint_ops *ops) |
c906108c | 8516 | { |
e29a4733 | 8517 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8518 | |
e29a4733 PA |
8519 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8520 | ||
8521 | c->forked_inferior_pid = null_ptid; | |
8522 | ||
3ea46bff | 8523 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8524 | } |
8525 | ||
fe798b75 JB |
8526 | /* Exec catchpoints. */ |
8527 | ||
b4d90040 PA |
8528 | /* An instance of this type is used to represent an exec catchpoint. |
8529 | It includes a "struct breakpoint" as a kind of base class; users | |
8530 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8531 | really of this type iff its ops pointer points to | |
8532 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8533 | ||
8534 | struct exec_catchpoint | |
8535 | { | |
8536 | /* The base class. */ | |
8537 | struct breakpoint base; | |
8538 | ||
8539 | /* Filename of a program whose exec triggered this catchpoint. | |
8540 | This field is only valid immediately after this catchpoint has | |
8541 | triggered. */ | |
8542 | char *exec_pathname; | |
8543 | }; | |
8544 | ||
8545 | /* Implement the "dtor" breakpoint_ops method for exec | |
8546 | catchpoints. */ | |
8547 | ||
8548 | static void | |
8549 | dtor_catch_exec (struct breakpoint *b) | |
8550 | { | |
8551 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8552 | ||
8553 | xfree (c->exec_pathname); | |
348d480f | 8554 | |
2060206e | 8555 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8556 | } |
8557 | ||
77b06cd7 TJB |
8558 | static int |
8559 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8560 | { |
dfd4cc63 | 8561 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8562 | } |
c906108c | 8563 | |
fe798b75 | 8564 | static int |
77b06cd7 | 8565 | remove_catch_exec (struct bp_location *bl) |
fe798b75 | 8566 | { |
dfd4cc63 | 8567 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8568 | } |
c906108c | 8569 | |
fe798b75 | 8570 | static int |
f1310107 | 8571 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8572 | struct address_space *aspace, CORE_ADDR bp_addr, |
8573 | const struct target_waitstatus *ws) | |
fe798b75 | 8574 | { |
b4d90040 PA |
8575 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8576 | ||
f90263c1 TT |
8577 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8578 | return 0; | |
8579 | ||
8580 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8581 | return 1; | |
fe798b75 | 8582 | } |
c906108c | 8583 | |
fe798b75 | 8584 | static enum print_stop_action |
348d480f | 8585 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8586 | { |
36dfb11c | 8587 | struct ui_out *uiout = current_uiout; |
348d480f | 8588 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8589 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8590 | ||
fe798b75 | 8591 | annotate_catchpoint (b->number); |
36dfb11c TT |
8592 | if (b->disposition == disp_del) |
8593 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8594 | else | |
8595 | ui_out_text (uiout, "\nCatchpoint "); | |
8596 | if (ui_out_is_mi_like_p (uiout)) | |
8597 | { | |
8598 | ui_out_field_string (uiout, "reason", | |
8599 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8600 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8601 | } | |
8602 | ui_out_field_int (uiout, "bkptno", b->number); | |
8603 | ui_out_text (uiout, " (exec'd "); | |
8604 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8605 | ui_out_text (uiout, "), "); | |
8606 | ||
fe798b75 | 8607 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8608 | } |
8609 | ||
fe798b75 | 8610 | static void |
a6d9a66e | 8611 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8612 | { |
b4d90040 | 8613 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8614 | struct value_print_options opts; |
79a45e25 | 8615 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8616 | |
8617 | get_user_print_options (&opts); | |
8618 | ||
8619 | /* Field 4, the address, is omitted (which makes the columns | |
8620 | not line up too nicely with the headers, but the effect | |
8621 | is relatively readable). */ | |
8622 | if (opts.addressprint) | |
8623 | ui_out_field_skip (uiout, "addr"); | |
8624 | annotate_field (5); | |
8625 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8626 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8627 | { |
8628 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8629 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8630 | ui_out_text (uiout, "\" "); |
8631 | } | |
8ac3646f TT |
8632 | |
8633 | if (ui_out_is_mi_like_p (uiout)) | |
8634 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
8635 | } |
8636 | ||
8637 | static void | |
8638 | print_mention_catch_exec (struct breakpoint *b) | |
8639 | { | |
8640 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8641 | } | |
8642 | ||
6149aea9 PA |
8643 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8644 | catchpoints. */ | |
8645 | ||
8646 | static void | |
8647 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8648 | { | |
8649 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8650 | print_recreate_thread (b, fp); |
6149aea9 PA |
8651 | } |
8652 | ||
2060206e | 8653 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8654 | |
c906108c | 8655 | static int |
fba45db2 | 8656 | hw_breakpoint_used_count (void) |
c906108c | 8657 | { |
c906108c | 8658 | int i = 0; |
f1310107 TJB |
8659 | struct breakpoint *b; |
8660 | struct bp_location *bl; | |
c906108c SS |
8661 | |
8662 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8663 | { |
d6b74ac4 | 8664 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8665 | for (bl = b->loc; bl; bl = bl->next) |
8666 | { | |
8667 | /* Special types of hardware breakpoints may use more than | |
8668 | one register. */ | |
348d480f | 8669 | i += b->ops->resources_needed (bl); |
f1310107 | 8670 | } |
c5aa993b | 8671 | } |
c906108c SS |
8672 | |
8673 | return i; | |
8674 | } | |
8675 | ||
a1398e0c PA |
8676 | /* Returns the resources B would use if it were a hardware |
8677 | watchpoint. */ | |
8678 | ||
c906108c | 8679 | static int |
a1398e0c | 8680 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8681 | { |
c906108c | 8682 | int i = 0; |
e09342b5 | 8683 | struct bp_location *bl; |
c906108c | 8684 | |
a1398e0c PA |
8685 | if (!breakpoint_enabled (b)) |
8686 | return 0; | |
8687 | ||
8688 | for (bl = b->loc; bl; bl = bl->next) | |
8689 | { | |
8690 | /* Special types of hardware watchpoints may use more than | |
8691 | one register. */ | |
8692 | i += b->ops->resources_needed (bl); | |
8693 | } | |
8694 | ||
8695 | return i; | |
8696 | } | |
8697 | ||
8698 | /* Returns the sum the used resources of all hardware watchpoints of | |
8699 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8700 | the sum of the used resources of all hardware watchpoints of other | |
8701 | types _not_ TYPE. */ | |
8702 | ||
8703 | static int | |
8704 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8705 | enum bptype type, int *other_type_used) | |
8706 | { | |
8707 | int i = 0; | |
8708 | struct breakpoint *b; | |
8709 | ||
c906108c SS |
8710 | *other_type_used = 0; |
8711 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8712 | { |
a1398e0c PA |
8713 | if (b == except) |
8714 | continue; | |
e09342b5 TJB |
8715 | if (!breakpoint_enabled (b)) |
8716 | continue; | |
8717 | ||
a1398e0c PA |
8718 | if (b->type == type) |
8719 | i += hw_watchpoint_use_count (b); | |
8720 | else if (is_hardware_watchpoint (b)) | |
8721 | *other_type_used = 1; | |
e09342b5 TJB |
8722 | } |
8723 | ||
c906108c SS |
8724 | return i; |
8725 | } | |
8726 | ||
c906108c | 8727 | void |
fba45db2 | 8728 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8729 | { |
c5aa993b | 8730 | struct breakpoint *b; |
c906108c SS |
8731 | |
8732 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8733 | { |
cc60f2e3 | 8734 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8735 | { |
b5de0fa7 | 8736 | b->enable_state = bp_call_disabled; |
44702360 | 8737 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8738 | } |
8739 | } | |
c906108c SS |
8740 | } |
8741 | ||
8742 | void | |
fba45db2 | 8743 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8744 | { |
c5aa993b | 8745 | struct breakpoint *b; |
c906108c SS |
8746 | |
8747 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8748 | { |
cc60f2e3 | 8749 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8750 | { |
b5de0fa7 | 8751 | b->enable_state = bp_enabled; |
44702360 | 8752 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8753 | } |
8754 | } | |
c906108c SS |
8755 | } |
8756 | ||
8bea4e01 UW |
8757 | void |
8758 | disable_breakpoints_before_startup (void) | |
8759 | { | |
6c95b8df | 8760 | current_program_space->executing_startup = 1; |
44702360 | 8761 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8762 | } |
8763 | ||
8764 | void | |
8765 | enable_breakpoints_after_startup (void) | |
8766 | { | |
6c95b8df | 8767 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8768 | breakpoint_re_set (); |
8bea4e01 UW |
8769 | } |
8770 | ||
7c16b83e PA |
8771 | /* Create a new single-step breakpoint for thread THREAD, with no |
8772 | locations. */ | |
c906108c | 8773 | |
7c16b83e PA |
8774 | static struct breakpoint * |
8775 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8776 | { | |
8777 | struct breakpoint *b = XNEW (struct breakpoint); | |
8778 | ||
8779 | init_raw_breakpoint_without_location (b, gdbarch, bp_single_step, | |
8780 | &momentary_breakpoint_ops); | |
8781 | ||
8782 | b->disposition = disp_donttouch; | |
8783 | b->frame_id = null_frame_id; | |
8784 | ||
8785 | b->thread = thread; | |
8786 | gdb_assert (b->thread != 0); | |
8787 | ||
8788 | add_to_breakpoint_chain (b); | |
8789 | ||
8790 | return b; | |
8791 | } | |
8792 | ||
8793 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8794 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8795 | frame. */ | |
c906108c SS |
8796 | |
8797 | struct breakpoint * | |
a6d9a66e UW |
8798 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8799 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8800 | { |
52f0bd74 | 8801 | struct breakpoint *b; |
edb3359d | 8802 | |
193facb3 JK |
8803 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8804 | tail-called one. */ | |
8805 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8806 | |
06edf0c0 | 8807 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8808 | b->enable_state = bp_enabled; |
8809 | b->disposition = disp_donttouch; | |
818dd999 | 8810 | b->frame_id = frame_id; |
c906108c | 8811 | |
4a64f543 MS |
8812 | /* If we're debugging a multi-threaded program, then we want |
8813 | momentary breakpoints to be active in only a single thread of | |
8814 | control. */ | |
39f77062 KB |
8815 | if (in_thread_list (inferior_ptid)) |
8816 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8817 | |
44702360 | 8818 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8819 | |
c906108c SS |
8820 | return b; |
8821 | } | |
611c83ae | 8822 | |
06edf0c0 | 8823 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8824 | The new breakpoint will have type TYPE, use OPS as its |
8825 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8826 | |
06edf0c0 PA |
8827 | static struct breakpoint * |
8828 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8829 | enum bptype type, | |
a1aa2221 LM |
8830 | const struct breakpoint_ops *ops, |
8831 | int loc_enabled) | |
e58b0e63 PA |
8832 | { |
8833 | struct breakpoint *copy; | |
8834 | ||
06edf0c0 | 8835 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8836 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8837 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8838 | |
a6d9a66e | 8839 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8840 | copy->loc->requested_address = orig->loc->requested_address; |
8841 | copy->loc->address = orig->loc->address; | |
8842 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8843 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8844 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8845 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8846 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8847 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8848 | copy->frame_id = orig->frame_id; |
8849 | copy->thread = orig->thread; | |
6c95b8df | 8850 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8851 | |
8852 | copy->enable_state = bp_enabled; | |
8853 | copy->disposition = disp_donttouch; | |
8854 | copy->number = internal_breakpoint_number--; | |
8855 | ||
44702360 | 8856 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8857 | return copy; |
8858 | } | |
8859 | ||
06edf0c0 PA |
8860 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8861 | ORIG is NULL. */ | |
8862 | ||
8863 | struct breakpoint * | |
8864 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8865 | { | |
8866 | /* If there's nothing to clone, then return nothing. */ | |
8867 | if (orig == NULL) | |
8868 | return NULL; | |
8869 | ||
a1aa2221 | 8870 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8871 | } |
8872 | ||
611c83ae | 8873 | struct breakpoint * |
a6d9a66e UW |
8874 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8875 | enum bptype type) | |
611c83ae PA |
8876 | { |
8877 | struct symtab_and_line sal; | |
8878 | ||
8879 | sal = find_pc_line (pc, 0); | |
8880 | sal.pc = pc; | |
8881 | sal.section = find_pc_overlay (pc); | |
8882 | sal.explicit_pc = 1; | |
8883 | ||
a6d9a66e | 8884 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8885 | } |
c906108c | 8886 | \f |
c5aa993b | 8887 | |
c906108c SS |
8888 | /* Tell the user we have just set a breakpoint B. */ |
8889 | ||
8890 | static void | |
fba45db2 | 8891 | mention (struct breakpoint *b) |
c906108c | 8892 | { |
348d480f | 8893 | b->ops->print_mention (b); |
79a45e25 | 8894 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8895 | return; |
c906108c SS |
8896 | printf_filtered ("\n"); |
8897 | } | |
c906108c | 8898 | \f |
c5aa993b | 8899 | |
1a853c52 PA |
8900 | static int bp_loc_is_permanent (struct bp_location *loc); |
8901 | ||
0d381245 | 8902 | static struct bp_location * |
39d61571 | 8903 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8904 | const struct symtab_and_line *sal) |
8905 | { | |
8906 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8907 | CORE_ADDR adjusted_address; |
8908 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8909 | ||
8910 | if (loc_gdbarch == NULL) | |
8911 | loc_gdbarch = b->gdbarch; | |
8912 | ||
8913 | /* Adjust the breakpoint's address prior to allocating a location. | |
8914 | Once we call allocate_bp_location(), that mostly uninitialized | |
8915 | location will be placed on the location chain. Adjustment of the | |
8916 | breakpoint may cause target_read_memory() to be called and we do | |
8917 | not want its scan of the location chain to find a breakpoint and | |
8918 | location that's only been partially initialized. */ | |
8919 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8920 | sal->pc, b->type); | |
0d381245 | 8921 | |
d30113d4 | 8922 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8923 | loc = allocate_bp_location (b); |
d30113d4 JK |
8924 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8925 | tmp = &((*tmp)->next)) | |
0d381245 | 8926 | ; |
d30113d4 | 8927 | loc->next = *tmp; |
0d381245 | 8928 | *tmp = loc; |
3742cc8b | 8929 | |
0d381245 | 8930 | loc->requested_address = sal->pc; |
3742cc8b | 8931 | loc->address = adjusted_address; |
6c95b8df | 8932 | loc->pspace = sal->pspace; |
729662a5 TT |
8933 | loc->probe.probe = sal->probe; |
8934 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8935 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8936 | loc->section = sal->section; |
3742cc8b | 8937 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8938 | loc->line_number = sal->line; |
2f202fde | 8939 | loc->symtab = sal->symtab; |
f8eba3c6 | 8940 | |
0e30163f JK |
8941 | set_breakpoint_location_function (loc, |
8942 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8943 | |
6ae88661 LM |
8944 | /* While by definition, permanent breakpoints are already present in the |
8945 | code, we don't mark the location as inserted. Normally one would expect | |
8946 | that GDB could rely on that breakpoint instruction to stop the program, | |
8947 | thus removing the need to insert its own breakpoint, except that executing | |
8948 | the breakpoint instruction can kill the target instead of reporting a | |
8949 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8950 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8951 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8952 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8953 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8954 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8955 | it manually increments the PC, thus avoiding executing the breakpoint | |
8956 | instruction.) */ | |
1a853c52 | 8957 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8958 | loc->permanent = 1; |
1a853c52 | 8959 | |
0d381245 VP |
8960 | return loc; |
8961 | } | |
514f746b AR |
8962 | \f |
8963 | ||
1cf4d951 | 8964 | /* See breakpoint.h. */ |
514f746b | 8965 | |
1cf4d951 PA |
8966 | int |
8967 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8968 | { |
8969 | int len; | |
8970 | CORE_ADDR addr; | |
1afeeb75 | 8971 | const gdb_byte *bpoint; |
514f746b | 8972 | gdb_byte *target_mem; |
939c61fa JK |
8973 | struct cleanup *cleanup; |
8974 | int retval = 0; | |
514f746b | 8975 | |
1cf4d951 PA |
8976 | addr = address; |
8977 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8978 | ||
8979 | /* Software breakpoints unsupported? */ | |
8980 | if (bpoint == NULL) | |
8981 | return 0; | |
8982 | ||
8983 | target_mem = alloca (len); | |
8984 | ||
8985 | /* Enable the automatic memory restoration from breakpoints while | |
8986 | we read the memory. Otherwise we could say about our temporary | |
8987 | breakpoints they are permanent. */ | |
8988 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
8989 | ||
8990 | if (target_read_memory (address, target_mem, len) == 0 | |
8991 | && memcmp (target_mem, bpoint, len) == 0) | |
8992 | retval = 1; | |
8993 | ||
8994 | do_cleanups (cleanup); | |
8995 | ||
8996 | return retval; | |
8997 | } | |
8998 | ||
8999 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
9000 | return 0 otherwise. */ | |
9001 | ||
9002 | static int | |
9003 | bp_loc_is_permanent (struct bp_location *loc) | |
9004 | { | |
9005 | struct cleanup *cleanup; | |
9006 | int retval; | |
9007 | ||
514f746b AR |
9008 | gdb_assert (loc != NULL); |
9009 | ||
244558af LM |
9010 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
9011 | attempt to read from the addresses the locations of these breakpoint types | |
9012 | point to. program_breakpoint_here_p, below, will attempt to read | |
9013 | memory. */ | |
9014 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
9015 | return 0; | |
9016 | ||
6c95b8df | 9017 | cleanup = save_current_space_and_thread (); |
6c95b8df | 9018 | switch_to_program_space_and_thread (loc->pspace); |
939c61fa | 9019 | |
1cf4d951 | 9020 | retval = program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b | 9021 | |
939c61fa JK |
9022 | do_cleanups (cleanup); |
9023 | ||
9024 | return retval; | |
514f746b AR |
9025 | } |
9026 | ||
e7e0cddf SS |
9027 | /* Build a command list for the dprintf corresponding to the current |
9028 | settings of the dprintf style options. */ | |
9029 | ||
9030 | static void | |
9031 | update_dprintf_command_list (struct breakpoint *b) | |
9032 | { | |
9033 | char *dprintf_args = b->extra_string; | |
9034 | char *printf_line = NULL; | |
9035 | ||
9036 | if (!dprintf_args) | |
9037 | return; | |
9038 | ||
9039 | dprintf_args = skip_spaces (dprintf_args); | |
9040 | ||
9041 | /* Allow a comma, as it may have terminated a location, but don't | |
9042 | insist on it. */ | |
9043 | if (*dprintf_args == ',') | |
9044 | ++dprintf_args; | |
9045 | dprintf_args = skip_spaces (dprintf_args); | |
9046 | ||
9047 | if (*dprintf_args != '"') | |
9048 | error (_("Bad format string, missing '\"'.")); | |
9049 | ||
d3ce09f5 | 9050 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 9051 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 9052 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
9053 | { |
9054 | if (!dprintf_function) | |
9055 | error (_("No function supplied for dprintf call")); | |
9056 | ||
9057 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
9058 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
9059 | dprintf_function, | |
9060 | dprintf_channel, | |
9061 | dprintf_args); | |
9062 | else | |
9063 | printf_line = xstrprintf ("call (void) %s (%s)", | |
9064 | dprintf_function, | |
9065 | dprintf_args); | |
9066 | } | |
d3ce09f5 SS |
9067 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
9068 | { | |
9069 | if (target_can_run_breakpoint_commands ()) | |
9070 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
9071 | else | |
9072 | { | |
9073 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
9074 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
9075 | } | |
9076 | } | |
e7e0cddf SS |
9077 | else |
9078 | internal_error (__FILE__, __LINE__, | |
9079 | _("Invalid dprintf style.")); | |
9080 | ||
f28045c2 | 9081 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 9082 | /* Manufacture a printf sequence. */ |
f28045c2 | 9083 | { |
9d6e6e84 HZ |
9084 | struct command_line *printf_cmd_line |
9085 | = xmalloc (sizeof (struct command_line)); | |
e7e0cddf | 9086 | |
f28045c2 YQ |
9087 | printf_cmd_line->control_type = simple_control; |
9088 | printf_cmd_line->body_count = 0; | |
9089 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 9090 | printf_cmd_line->next = NULL; |
f28045c2 | 9091 | printf_cmd_line->line = printf_line; |
e7e0cddf | 9092 | |
f28045c2 YQ |
9093 | breakpoint_set_commands (b, printf_cmd_line); |
9094 | } | |
e7e0cddf SS |
9095 | } |
9096 | ||
9097 | /* Update all dprintf commands, making their command lists reflect | |
9098 | current style settings. */ | |
9099 | ||
9100 | static void | |
9101 | update_dprintf_commands (char *args, int from_tty, | |
9102 | struct cmd_list_element *c) | |
9103 | { | |
9104 | struct breakpoint *b; | |
9105 | ||
9106 | ALL_BREAKPOINTS (b) | |
9107 | { | |
9108 | if (b->type == bp_dprintf) | |
9109 | update_dprintf_command_list (b); | |
9110 | } | |
9111 | } | |
c3f6f71d | 9112 | |
f00aae0f KS |
9113 | /* Create a breakpoint with SAL as location. Use LOCATION |
9114 | as a description of the location, and COND_STRING | |
db107f19 | 9115 | as condition expression. */ |
018d34a4 VP |
9116 | |
9117 | static void | |
d9b3f62e | 9118 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
f00aae0f KS |
9119 | struct symtabs_and_lines sals, |
9120 | struct event_location *location, | |
f8eba3c6 | 9121 | char *filter, char *cond_string, |
e7e0cddf | 9122 | char *extra_string, |
d9b3f62e PA |
9123 | enum bptype type, enum bpdisp disposition, |
9124 | int thread, int task, int ignore_count, | |
c0a91b2b | 9125 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9126 | int enabled, int internal, unsigned flags, |
9127 | int display_canonical) | |
018d34a4 | 9128 | { |
0d381245 | 9129 | int i; |
018d34a4 VP |
9130 | |
9131 | if (type == bp_hardware_breakpoint) | |
9132 | { | |
fbbd034e AS |
9133 | int target_resources_ok; |
9134 | ||
9135 | i = hw_breakpoint_used_count (); | |
9136 | target_resources_ok = | |
9137 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9138 | i + 1, 0); |
9139 | if (target_resources_ok == 0) | |
9140 | error (_("No hardware breakpoint support in the target.")); | |
9141 | else if (target_resources_ok < 0) | |
9142 | error (_("Hardware breakpoints used exceeds limit.")); | |
9143 | } | |
9144 | ||
6c95b8df PA |
9145 | gdb_assert (sals.nelts > 0); |
9146 | ||
0d381245 VP |
9147 | for (i = 0; i < sals.nelts; ++i) |
9148 | { | |
9149 | struct symtab_and_line sal = sals.sals[i]; | |
9150 | struct bp_location *loc; | |
9151 | ||
9152 | if (from_tty) | |
5af949e3 UW |
9153 | { |
9154 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9155 | if (!loc_gdbarch) | |
9156 | loc_gdbarch = gdbarch; | |
9157 | ||
9158 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9159 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9160 | } |
0d381245 VP |
9161 | |
9162 | if (i == 0) | |
9163 | { | |
d9b3f62e | 9164 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9165 | b->thread = thread; |
4a306c9a | 9166 | b->task = task; |
855a6e68 | 9167 | |
0d381245 | 9168 | b->cond_string = cond_string; |
e7e0cddf | 9169 | b->extra_string = extra_string; |
0d381245 | 9170 | b->ignore_count = ignore_count; |
41447f92 | 9171 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9172 | b->disposition = disposition; |
6c95b8df | 9173 | |
44f238bb PA |
9174 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9175 | b->loc->inserted = 1; | |
9176 | ||
0fb4aa4b PA |
9177 | if (type == bp_static_tracepoint) |
9178 | { | |
d9b3f62e | 9179 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9180 | struct static_tracepoint_marker marker; |
9181 | ||
983af33b | 9182 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9183 | { |
9184 | /* We already know the marker exists, otherwise, we | |
9185 | wouldn't see a sal for it. */ | |
f00aae0f KS |
9186 | const char *p = &event_location_to_string (b->location)[3]; |
9187 | const char *endp; | |
0fb4aa4b | 9188 | char *marker_str; |
0fb4aa4b | 9189 | |
f00aae0f | 9190 | p = skip_spaces_const (p); |
0fb4aa4b | 9191 | |
f00aae0f | 9192 | endp = skip_to_space_const (p); |
0fb4aa4b PA |
9193 | |
9194 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9195 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9196 | |
3e43a32a MS |
9197 | printf_filtered (_("Probed static tracepoint " |
9198 | "marker \"%s\"\n"), | |
d9b3f62e | 9199 | t->static_trace_marker_id); |
0fb4aa4b PA |
9200 | } |
9201 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9202 | { | |
d9b3f62e | 9203 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9204 | release_static_tracepoint_marker (&marker); |
9205 | ||
3e43a32a MS |
9206 | printf_filtered (_("Probed static tracepoint " |
9207 | "marker \"%s\"\n"), | |
d9b3f62e | 9208 | t->static_trace_marker_id); |
0fb4aa4b PA |
9209 | } |
9210 | else | |
3e43a32a MS |
9211 | warning (_("Couldn't determine the static " |
9212 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9213 | } |
9214 | ||
0d381245 VP |
9215 | loc = b->loc; |
9216 | } | |
9217 | else | |
018d34a4 | 9218 | { |
39d61571 | 9219 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9220 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9221 | loc->inserted = 1; | |
0d381245 VP |
9222 | } |
9223 | ||
9224 | if (b->cond_string) | |
9225 | { | |
bbc13ae3 KS |
9226 | const char *arg = b->cond_string; |
9227 | ||
1bb9788d TT |
9228 | loc->cond = parse_exp_1 (&arg, loc->address, |
9229 | block_for_pc (loc->address), 0); | |
0d381245 | 9230 | if (*arg) |
588ae58c | 9231 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9232 | } |
e7e0cddf SS |
9233 | |
9234 | /* Dynamic printf requires and uses additional arguments on the | |
9235 | command line, otherwise it's an error. */ | |
9236 | if (type == bp_dprintf) | |
9237 | { | |
9238 | if (b->extra_string) | |
9239 | update_dprintf_command_list (b); | |
9240 | else | |
9241 | error (_("Format string required")); | |
9242 | } | |
9243 | else if (b->extra_string) | |
588ae58c | 9244 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9245 | } |
018d34a4 | 9246 | |
56435ebe | 9247 | b->display_canonical = display_canonical; |
f00aae0f KS |
9248 | if (location != NULL) |
9249 | b->location = location; | |
018d34a4 | 9250 | else |
a06efdd6 | 9251 | b->location = new_address_location (b->loc->address); |
f8eba3c6 | 9252 | b->filter = filter; |
d9b3f62e | 9253 | } |
018d34a4 | 9254 | |
d9b3f62e PA |
9255 | static void |
9256 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
f00aae0f KS |
9257 | struct symtabs_and_lines sals, |
9258 | struct event_location *location, | |
f8eba3c6 | 9259 | char *filter, char *cond_string, |
e7e0cddf | 9260 | char *extra_string, |
d9b3f62e PA |
9261 | enum bptype type, enum bpdisp disposition, |
9262 | int thread, int task, int ignore_count, | |
c0a91b2b | 9263 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9264 | int enabled, int internal, unsigned flags, |
9265 | int display_canonical) | |
d9b3f62e PA |
9266 | { |
9267 | struct breakpoint *b; | |
9268 | struct cleanup *old_chain; | |
9269 | ||
9270 | if (is_tracepoint_type (type)) | |
9271 | { | |
9272 | struct tracepoint *t; | |
9273 | ||
9274 | t = XCNEW (struct tracepoint); | |
9275 | b = &t->base; | |
9276 | } | |
9277 | else | |
9278 | b = XNEW (struct breakpoint); | |
9279 | ||
9280 | old_chain = make_cleanup (xfree, b); | |
9281 | ||
9282 | init_breakpoint_sal (b, gdbarch, | |
f00aae0f | 9283 | sals, location, |
e7e0cddf | 9284 | filter, cond_string, extra_string, |
d9b3f62e PA |
9285 | type, disposition, |
9286 | thread, task, ignore_count, | |
9287 | ops, from_tty, | |
44f238bb PA |
9288 | enabled, internal, flags, |
9289 | display_canonical); | |
d9b3f62e PA |
9290 | discard_cleanups (old_chain); |
9291 | ||
3ea46bff | 9292 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9293 | } |
9294 | ||
9295 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9296 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9297 | value. COND_STRING, if not NULL, specified the condition to be | |
9298 | used for all breakpoints. Essentially the only case where | |
9299 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9300 | function. In that case, it's still not possible to specify | |
9301 | separate conditions for different overloaded functions, so | |
9302 | we take just a single condition string. | |
9303 | ||
c3f6f71d | 9304 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9305 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9306 | array contents). If the function fails (error() is called), the |
9307 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9308 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9309 | |
9310 | static void | |
8cdf0e15 | 9311 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9312 | struct linespec_result *canonical, |
e7e0cddf | 9313 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9314 | enum bptype type, enum bpdisp disposition, |
9315 | int thread, int task, int ignore_count, | |
c0a91b2b | 9316 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9317 | int enabled, int internal, unsigned flags) |
c906108c | 9318 | { |
018d34a4 | 9319 | int i; |
f8eba3c6 | 9320 | struct linespec_sals *lsal; |
cc59ec59 | 9321 | |
f8eba3c6 TT |
9322 | if (canonical->pre_expanded) |
9323 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9324 | ||
9325 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9326 | { |
f00aae0f | 9327 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9328 | 'break', without arguments. */ |
f00aae0f KS |
9329 | struct event_location *location |
9330 | = (canonical->location != NULL | |
9331 | ? copy_event_location (canonical->location) : NULL); | |
f8eba3c6 | 9332 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; |
f00aae0f | 9333 | struct cleanup *inner = make_cleanup_delete_event_location (location); |
0d381245 | 9334 | |
f8eba3c6 TT |
9335 | make_cleanup (xfree, filter_string); |
9336 | create_breakpoint_sal (gdbarch, lsal->sals, | |
f00aae0f | 9337 | location, |
f8eba3c6 | 9338 | filter_string, |
e7e0cddf SS |
9339 | cond_string, extra_string, |
9340 | type, disposition, | |
84f4c1fe | 9341 | thread, task, ignore_count, ops, |
44f238bb | 9342 | from_tty, enabled, internal, flags, |
56435ebe | 9343 | canonical->special_display); |
f8eba3c6 | 9344 | discard_cleanups (inner); |
c3f6f71d | 9345 | } |
c3f6f71d | 9346 | } |
c906108c | 9347 | |
f00aae0f | 9348 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9349 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9350 | addresses found. LOCATION points to the end of the SAL (for |
9351 | linespec locations). | |
9998af43 TJB |
9352 | |
9353 | The array and the line spec strings are allocated on the heap, it is | |
9354 | the caller's responsibility to free them. */ | |
c906108c | 9355 | |
b9362cc7 | 9356 | static void |
f00aae0f | 9357 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9358 | struct linespec_result *canonical) |
c3f6f71d | 9359 | { |
f00aae0f KS |
9360 | struct symtab_and_line cursal; |
9361 | ||
9362 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9363 | { | |
9364 | const char *address = get_linespec_location (location); | |
9365 | ||
9366 | if (address == NULL) | |
9367 | { | |
9368 | /* The last displayed codepoint, if it's valid, is our default | |
9369 | breakpoint address. */ | |
9370 | if (last_displayed_sal_is_valid ()) | |
9371 | { | |
9372 | struct linespec_sals lsal; | |
9373 | struct symtab_and_line sal; | |
9374 | CORE_ADDR pc; | |
9375 | ||
9376 | init_sal (&sal); /* Initialize to zeroes. */ | |
9377 | lsal.sals.sals = (struct symtab_and_line *) | |
9378 | xmalloc (sizeof (struct symtab_and_line)); | |
9379 | ||
9380 | /* Set sal's pspace, pc, symtab, and line to the values | |
9381 | corresponding to the last call to print_frame_info. | |
9382 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9383 | as the breakpoint line number is inappropriate otherwise. | |
9384 | find_pc_line would adjust PC, re-set it back. */ | |
9385 | get_last_displayed_sal (&sal); | |
9386 | pc = sal.pc; | |
9387 | sal = find_pc_line (pc, 0); | |
9388 | ||
9389 | /* "break" without arguments is equivalent to "break *PC" | |
9390 | where PC is the last displayed codepoint's address. So | |
9391 | make sure to set sal.explicit_pc to prevent GDB from | |
9392 | trying to expand the list of sals to include all other | |
9393 | instances with the same symtab and line. */ | |
9394 | sal.pc = pc; | |
9395 | sal.explicit_pc = 1; | |
9396 | ||
9397 | lsal.sals.sals[0] = sal; | |
9398 | lsal.sals.nelts = 1; | |
9399 | lsal.canonical = NULL; | |
9400 | ||
9401 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
9402 | return; | |
9403 | } | |
9404 | else | |
9405 | error (_("No default breakpoint address now.")); | |
c906108c | 9406 | } |
c906108c | 9407 | } |
f00aae0f KS |
9408 | |
9409 | /* Force almost all breakpoints to be in terms of the | |
9410 | current_source_symtab (which is decode_line_1's default). | |
9411 | This should produce the results we want almost all of the | |
9412 | time while leaving default_breakpoint_* alone. | |
9413 | ||
9414 | ObjC: However, don't match an Objective-C method name which | |
9415 | may have a '+' or '-' succeeded by a '['. */ | |
9416 | cursal = get_current_source_symtab_and_line (); | |
9417 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9418 | { |
f00aae0f | 9419 | const char *address = NULL; |
cc80f267 | 9420 | |
f00aae0f KS |
9421 | if (event_location_type (location) == LINESPEC_LOCATION) |
9422 | address = get_linespec_location (location); | |
cc80f267 | 9423 | |
f00aae0f KS |
9424 | if (!cursal.symtab |
9425 | || (address != NULL | |
9426 | && strchr ("+-", address[0]) != NULL | |
9427 | && address[1] != '[')) | |
9428 | { | |
9429 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, | |
9430 | get_last_displayed_symtab (), | |
9431 | get_last_displayed_line (), | |
9432 | canonical, NULL, NULL); | |
9433 | return; | |
9434 | } | |
c906108c | 9435 | } |
f00aae0f KS |
9436 | |
9437 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, | |
9438 | cursal.symtab, cursal.line, canonical, NULL, NULL); | |
c3f6f71d | 9439 | } |
c906108c | 9440 | |
c906108c | 9441 | |
c3f6f71d | 9442 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9443 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9444 | |
b9362cc7 | 9445 | static void |
23e7acfb | 9446 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9447 | { |
9448 | int i; | |
cc59ec59 | 9449 | |
c3f6f71d | 9450 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9451 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9452 | } |
9453 | ||
7a697b8d SS |
9454 | /* Fast tracepoints may have restrictions on valid locations. For |
9455 | instance, a fast tracepoint using a jump instead of a trap will | |
9456 | likely have to overwrite more bytes than a trap would, and so can | |
9457 | only be placed where the instruction is longer than the jump, or a | |
9458 | multi-instruction sequence does not have a jump into the middle of | |
9459 | it, etc. */ | |
9460 | ||
9461 | static void | |
9462 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9463 | struct symtabs_and_lines *sals) | |
9464 | { | |
9465 | int i, rslt; | |
9466 | struct symtab_and_line *sal; | |
9467 | char *msg; | |
9468 | struct cleanup *old_chain; | |
9469 | ||
9470 | for (i = 0; i < sals->nelts; i++) | |
9471 | { | |
f8eba3c6 TT |
9472 | struct gdbarch *sarch; |
9473 | ||
7a697b8d SS |
9474 | sal = &sals->sals[i]; |
9475 | ||
f8eba3c6 TT |
9476 | sarch = get_sal_arch (*sal); |
9477 | /* We fall back to GDBARCH if there is no architecture | |
9478 | associated with SAL. */ | |
9479 | if (sarch == NULL) | |
9480 | sarch = gdbarch; | |
6b940e6a | 9481 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, &msg); |
7a697b8d SS |
9482 | old_chain = make_cleanup (xfree, msg); |
9483 | ||
9484 | if (!rslt) | |
9485 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9486 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9487 | |
9488 | do_cleanups (old_chain); | |
9489 | } | |
9490 | } | |
9491 | ||
af4908ba KS |
9492 | /* Issue an invalid thread ID error. */ |
9493 | ||
9494 | static void ATTRIBUTE_NORETURN | |
9495 | invalid_thread_id_error (int id) | |
9496 | { | |
9497 | error (_("Unknown thread %d."), id); | |
9498 | } | |
9499 | ||
018d34a4 VP |
9500 | /* Given TOK, a string specification of condition and thread, as |
9501 | accepted by the 'break' command, extract the condition | |
9502 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9503 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9504 | If no condition is found, *COND_STRING is set to NULL. |
9505 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9506 | |
9507 | static void | |
bbc13ae3 | 9508 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9509 | char **cond_string, int *thread, int *task, |
9510 | char **rest) | |
018d34a4 VP |
9511 | { |
9512 | *cond_string = NULL; | |
9513 | *thread = -1; | |
ed1d1739 KS |
9514 | *task = 0; |
9515 | *rest = NULL; | |
9516 | ||
018d34a4 VP |
9517 | while (tok && *tok) |
9518 | { | |
bbc13ae3 | 9519 | const char *end_tok; |
018d34a4 | 9520 | int toklen; |
bbc13ae3 KS |
9521 | const char *cond_start = NULL; |
9522 | const char *cond_end = NULL; | |
cc59ec59 | 9523 | |
bbc13ae3 | 9524 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9525 | |
9526 | if ((*tok == '"' || *tok == ',') && rest) | |
9527 | { | |
9528 | *rest = savestring (tok, strlen (tok)); | |
9529 | return; | |
9530 | } | |
9531 | ||
bbc13ae3 | 9532 | end_tok = skip_to_space_const (tok); |
d634f2de | 9533 | |
018d34a4 | 9534 | toklen = end_tok - tok; |
d634f2de | 9535 | |
018d34a4 VP |
9536 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9537 | { | |
f7545552 TT |
9538 | struct expression *expr; |
9539 | ||
018d34a4 | 9540 | tok = cond_start = end_tok + 1; |
1bb9788d | 9541 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9542 | xfree (expr); |
018d34a4 | 9543 | cond_end = tok; |
d634f2de | 9544 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9545 | } |
9546 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9547 | { | |
9548 | char *tmptok; | |
d634f2de | 9549 | |
018d34a4 | 9550 | tok = end_tok + 1; |
bbc13ae3 | 9551 | *thread = strtol (tok, &tmptok, 0); |
018d34a4 VP |
9552 | if (tok == tmptok) |
9553 | error (_("Junk after thread keyword.")); | |
9554 | if (!valid_thread_id (*thread)) | |
af4908ba | 9555 | invalid_thread_id_error (*thread); |
bbc13ae3 | 9556 | tok = tmptok; |
018d34a4 | 9557 | } |
4a306c9a JB |
9558 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9559 | { | |
9560 | char *tmptok; | |
9561 | ||
9562 | tok = end_tok + 1; | |
bbc13ae3 | 9563 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9564 | if (tok == tmptok) |
9565 | error (_("Junk after task keyword.")); | |
9566 | if (!valid_task_id (*task)) | |
b6199126 | 9567 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9568 | tok = tmptok; |
4a306c9a | 9569 | } |
e7e0cddf SS |
9570 | else if (rest) |
9571 | { | |
9572 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9573 | return; |
e7e0cddf | 9574 | } |
018d34a4 VP |
9575 | else |
9576 | error (_("Junk at end of arguments.")); | |
9577 | } | |
9578 | } | |
9579 | ||
0fb4aa4b PA |
9580 | /* Decode a static tracepoint marker spec. */ |
9581 | ||
9582 | static struct symtabs_and_lines | |
f00aae0f | 9583 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9584 | { |
9585 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9586 | struct symtabs_and_lines sals; | |
0fb4aa4b | 9587 | struct cleanup *old_chain; |
f00aae0f KS |
9588 | const char *p = &(*arg_p)[3]; |
9589 | const char *endp; | |
0fb4aa4b PA |
9590 | char *marker_str; |
9591 | int i; | |
9592 | ||
f00aae0f | 9593 | p = skip_spaces_const (p); |
0fb4aa4b | 9594 | |
f00aae0f | 9595 | endp = skip_to_space_const (p); |
0fb4aa4b PA |
9596 | |
9597 | marker_str = savestring (p, endp - p); | |
9598 | old_chain = make_cleanup (xfree, marker_str); | |
9599 | ||
9600 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9601 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9602 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9603 | ||
9604 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9605 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9606 | ||
9607 | for (i = 0; i < sals.nelts; i++) | |
9608 | { | |
9609 | struct static_tracepoint_marker *marker; | |
9610 | ||
9611 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9612 | ||
9613 | init_sal (&sals.sals[i]); | |
9614 | ||
9615 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9616 | sals.sals[i].pc = marker->address; | |
9617 | ||
9618 | release_static_tracepoint_marker (marker); | |
9619 | } | |
9620 | ||
9621 | do_cleanups (old_chain); | |
9622 | ||
9623 | *arg_p = endp; | |
9624 | return sals; | |
9625 | } | |
9626 | ||
f00aae0f | 9627 | /* See breakpoint.h. */ |
0101ce28 | 9628 | |
8cdf0e15 VP |
9629 | int |
9630 | create_breakpoint (struct gdbarch *gdbarch, | |
f00aae0f | 9631 | const struct event_location *location, char *cond_string, |
e7e0cddf | 9632 | int thread, char *extra_string, |
f00aae0f | 9633 | int parse_extra, |
0fb4aa4b | 9634 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9635 | int ignore_count, |
9636 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9637 | const struct breakpoint_ops *ops, |
44f238bb PA |
9638 | int from_tty, int enabled, int internal, |
9639 | unsigned flags) | |
c3f6f71d | 9640 | { |
7efd8fc2 | 9641 | struct linespec_result canonical; |
c3f6f71d | 9642 | struct cleanup *old_chain; |
80c99de1 | 9643 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9644 | int pending = 0; |
4a306c9a | 9645 | int task = 0; |
86b17b60 | 9646 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9647 | |
348d480f PA |
9648 | gdb_assert (ops != NULL); |
9649 | ||
f00aae0f KS |
9650 | /* If extra_string isn't useful, set it to NULL. */ |
9651 | if (extra_string != NULL && *extra_string == '\0') | |
9652 | extra_string = NULL; | |
9653 | ||
7efd8fc2 | 9654 | init_linespec_result (&canonical); |
c3f6f71d | 9655 | |
492d29ea | 9656 | TRY |
b78a6381 | 9657 | { |
f00aae0f | 9658 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9659 | } |
492d29ea | 9660 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9661 | { |
492d29ea PA |
9662 | /* If caller is interested in rc value from parse, set |
9663 | value. */ | |
9664 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9665 | { |
05ff989b AC |
9666 | /* If pending breakpoint support is turned off, throw |
9667 | error. */ | |
fa8d40ab JJ |
9668 | |
9669 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9670 | throw_exception (e); |
9671 | ||
9672 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9673 | |
05ff989b AC |
9674 | /* If pending breakpoint support is auto query and the user |
9675 | selects no, then simply return the error code. */ | |
059fb39f | 9676 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9677 | && !nquery (_("Make %s pending on future shared library load? "), |
9678 | bptype_string (type_wanted))) | |
fd9b8c24 | 9679 | return 0; |
fa8d40ab | 9680 | |
05ff989b AC |
9681 | /* At this point, either the user was queried about setting |
9682 | a pending breakpoint and selected yes, or pending | |
9683 | breakpoint behavior is on and thus a pending breakpoint | |
9684 | is defaulted on behalf of the user. */ | |
f00aae0f | 9685 | pending = 1; |
0101ce28 | 9686 | } |
492d29ea PA |
9687 | else |
9688 | throw_exception (e); | |
0101ce28 | 9689 | } |
492d29ea PA |
9690 | END_CATCH |
9691 | ||
f00aae0f | 9692 | if (!pending && VEC_empty (linespec_sals, canonical.sals)) |
492d29ea | 9693 | return 0; |
c3f6f71d | 9694 | |
4a64f543 | 9695 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9696 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9697 | |
c3f6f71d JM |
9698 | /* ----------------------------- SNIP ----------------------------- |
9699 | Anything added to the cleanup chain beyond this point is assumed | |
9700 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9701 | then the memory is not reclaimed. */ |
9702 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9703 | |
c3f6f71d JM |
9704 | /* Resolve all line numbers to PC's and verify that the addresses |
9705 | are ok for the target. */ | |
0101ce28 | 9706 | if (!pending) |
f8eba3c6 TT |
9707 | { |
9708 | int ix; | |
9709 | struct linespec_sals *iter; | |
9710 | ||
9711 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9712 | breakpoint_sals_to_pc (&iter->sals); | |
9713 | } | |
c3f6f71d | 9714 | |
7a697b8d | 9715 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9716 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9717 | { |
9718 | int ix; | |
9719 | struct linespec_sals *iter; | |
9720 | ||
9721 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9722 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9723 | } | |
7a697b8d | 9724 | |
c3f6f71d JM |
9725 | /* Verify that condition can be parsed, before setting any |
9726 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9727 | breakpoint. */ |
0101ce28 | 9728 | if (!pending) |
c3f6f71d | 9729 | { |
f00aae0f | 9730 | if (parse_extra) |
72b2ff0e | 9731 | { |
0878d0fa | 9732 | char *rest; |
52d361e1 YQ |
9733 | struct linespec_sals *lsal; |
9734 | ||
9735 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9736 | ||
0878d0fa YQ |
9737 | /* Here we only parse 'arg' to separate condition |
9738 | from thread number, so parsing in context of first | |
9739 | sal is OK. When setting the breakpoint we'll | |
9740 | re-parse it in context of each sal. */ | |
9741 | ||
f00aae0f KS |
9742 | find_condition_and_thread (extra_string, lsal->sals.sals[0].pc, |
9743 | &cond_string, &thread, &task, &rest); | |
0878d0fa YQ |
9744 | if (cond_string) |
9745 | make_cleanup (xfree, cond_string); | |
9746 | if (rest) | |
9747 | make_cleanup (xfree, rest); | |
9748 | if (rest) | |
9749 | extra_string = rest; | |
f00aae0f KS |
9750 | else |
9751 | extra_string = NULL; | |
72b2ff0e | 9752 | } |
2f069f6f | 9753 | else |
72b2ff0e | 9754 | { |
f00aae0f KS |
9755 | if (type_wanted != bp_dprintf |
9756 | && extra_string != NULL && *extra_string != '\0') | |
9757 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9758 | |
9759 | /* Create a private copy of condition string. */ | |
9760 | if (cond_string) | |
9761 | { | |
9762 | cond_string = xstrdup (cond_string); | |
9763 | make_cleanup (xfree, cond_string); | |
9764 | } | |
9765 | /* Create a private copy of any extra string. */ | |
9766 | if (extra_string) | |
9767 | { | |
9768 | extra_string = xstrdup (extra_string); | |
9769 | make_cleanup (xfree, extra_string); | |
9770 | } | |
72b2ff0e | 9771 | } |
0fb4aa4b | 9772 | |
52d361e1 | 9773 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e7e0cddf | 9774 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9775 | tempflag ? disp_del : disp_donttouch, |
9776 | thread, task, ignore_count, ops, | |
44f238bb | 9777 | from_tty, enabled, internal, flags); |
c906108c | 9778 | } |
0101ce28 JJ |
9779 | else |
9780 | { | |
0101ce28 JJ |
9781 | struct breakpoint *b; |
9782 | ||
bfccc43c YQ |
9783 | if (is_tracepoint_type (type_wanted)) |
9784 | { | |
9785 | struct tracepoint *t; | |
9786 | ||
9787 | t = XCNEW (struct tracepoint); | |
9788 | b = &t->base; | |
9789 | } | |
9790 | else | |
9791 | b = XNEW (struct breakpoint); | |
9792 | ||
9793 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
f00aae0f | 9794 | b->location = copy_event_location (location); |
bfccc43c | 9795 | |
f00aae0f KS |
9796 | if (parse_extra) |
9797 | b->cond_string = NULL; | |
e12c7713 MK |
9798 | else |
9799 | { | |
9800 | /* Create a private copy of condition string. */ | |
9801 | if (cond_string) | |
9802 | { | |
9803 | cond_string = xstrdup (cond_string); | |
9804 | make_cleanup (xfree, cond_string); | |
9805 | } | |
9806 | b->cond_string = cond_string; | |
15630549 | 9807 | b->thread = thread; |
e12c7713 | 9808 | } |
f00aae0f KS |
9809 | |
9810 | /* Create a private copy of any extra string. */ | |
9811 | if (extra_string != NULL) | |
9812 | { | |
9813 | extra_string = xstrdup (extra_string); | |
9814 | make_cleanup (xfree, extra_string); | |
9815 | } | |
9816 | b->extra_string = extra_string; | |
0101ce28 | 9817 | b->ignore_count = ignore_count; |
0101ce28 | 9818 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9819 | b->condition_not_parsed = 1; |
41447f92 | 9820 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9821 | if ((type_wanted != bp_breakpoint |
9822 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9823 | b->pspace = current_program_space; |
8bea4e01 | 9824 | |
bfccc43c | 9825 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9826 | } |
9827 | ||
f8eba3c6 | 9828 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9829 | { |
3e43a32a MS |
9830 | warning (_("Multiple breakpoints were set.\nUse the " |
9831 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9832 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9833 | } |
9834 | ||
80c99de1 PA |
9835 | /* That's it. Discard the cleanups for data inserted into the |
9836 | breakpoint. */ | |
9837 | discard_cleanups (bkpt_chain); | |
9838 | /* But cleanup everything else. */ | |
c3f6f71d | 9839 | do_cleanups (old_chain); |
217dc9e2 | 9840 | |
80c99de1 | 9841 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9842 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9843 | |
9844 | return 1; | |
c3f6f71d | 9845 | } |
c906108c | 9846 | |
348d480f | 9847 | /* Set a breakpoint. |
72b2ff0e VP |
9848 | ARG is a string describing breakpoint address, |
9849 | condition, and thread. | |
9850 | FLAG specifies if a breakpoint is hardware on, | |
9851 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9852 | and BP_TEMPFLAG. */ | |
348d480f | 9853 | |
98deb0da | 9854 | static void |
72b2ff0e | 9855 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9856 | { |
72b2ff0e | 9857 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9858 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9859 | ? bp_hardware_breakpoint | |
9860 | : bp_breakpoint); | |
55aa24fb | 9861 | struct breakpoint_ops *ops; |
f00aae0f KS |
9862 | struct event_location *location; |
9863 | struct cleanup *cleanup; | |
9864 | ||
9865 | location = string_to_event_location (&arg, current_language); | |
9866 | cleanup = make_cleanup_delete_event_location (location); | |
55aa24fb SDJ |
9867 | |
9868 | /* Matching breakpoints on probes. */ | |
5b56227b KS |
9869 | if (location != NULL |
9870 | && event_location_type (location) == PROBE_LOCATION) | |
55aa24fb SDJ |
9871 | ops = &bkpt_probe_breakpoint_ops; |
9872 | else | |
9873 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9874 | |
8cdf0e15 | 9875 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
9876 | location, |
9877 | NULL, 0, arg, 1 /* parse arg */, | |
0fb4aa4b | 9878 | tempflag, type_wanted, |
8cdf0e15 VP |
9879 | 0 /* Ignore count */, |
9880 | pending_break_support, | |
55aa24fb | 9881 | ops, |
8cdf0e15 | 9882 | from_tty, |
84f4c1fe | 9883 | 1 /* enabled */, |
44f238bb PA |
9884 | 0 /* internal */, |
9885 | 0); | |
f00aae0f | 9886 | do_cleanups (cleanup); |
c906108c SS |
9887 | } |
9888 | ||
c906108c SS |
9889 | /* Helper function for break_command_1 and disassemble_command. */ |
9890 | ||
9891 | void | |
fba45db2 | 9892 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9893 | { |
9894 | CORE_ADDR pc; | |
9895 | ||
9896 | if (sal->pc == 0 && sal->symtab != NULL) | |
9897 | { | |
9898 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9899 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9900 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9901 | sal->pc = pc; |
6a048695 | 9902 | |
4a64f543 MS |
9903 | /* If this SAL corresponds to a breakpoint inserted using a line |
9904 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9905 | if (sal->explicit_line) |
059acae7 | 9906 | skip_prologue_sal (sal); |
c906108c SS |
9907 | } |
9908 | ||
9909 | if (sal->section == 0 && sal->symtab != NULL) | |
9910 | { | |
346d1dfe | 9911 | const struct blockvector *bv; |
3977b71f | 9912 | const struct block *b; |
c5aa993b | 9913 | struct symbol *sym; |
c906108c | 9914 | |
43f3e411 DE |
9915 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9916 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9917 | if (bv != NULL) |
9918 | { | |
7f0df278 | 9919 | sym = block_linkage_function (b); |
c906108c SS |
9920 | if (sym != NULL) |
9921 | { | |
eb822aa6 DE |
9922 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9923 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9924 | sym); | |
c906108c SS |
9925 | } |
9926 | else | |
9927 | { | |
4a64f543 MS |
9928 | /* It really is worthwhile to have the section, so we'll |
9929 | just have to look harder. This case can be executed | |
9930 | if we have line numbers but no functions (as can | |
9931 | happen in assembly source). */ | |
c906108c | 9932 | |
7cbd4a93 | 9933 | struct bound_minimal_symbol msym; |
6c95b8df PA |
9934 | struct cleanup *old_chain = save_current_space_and_thread (); |
9935 | ||
9936 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9937 | |
9938 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7cbd4a93 | 9939 | if (msym.minsym) |
efd66ac6 | 9940 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
6c95b8df PA |
9941 | |
9942 | do_cleanups (old_chain); | |
c906108c SS |
9943 | } |
9944 | } | |
9945 | } | |
9946 | } | |
9947 | ||
9948 | void | |
fba45db2 | 9949 | break_command (char *arg, int from_tty) |
c906108c | 9950 | { |
db107f19 | 9951 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9952 | } |
9953 | ||
c906108c | 9954 | void |
fba45db2 | 9955 | tbreak_command (char *arg, int from_tty) |
c906108c | 9956 | { |
db107f19 | 9957 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9958 | } |
9959 | ||
c906108c | 9960 | static void |
fba45db2 | 9961 | hbreak_command (char *arg, int from_tty) |
c906108c | 9962 | { |
db107f19 | 9963 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9964 | } |
9965 | ||
9966 | static void | |
fba45db2 | 9967 | thbreak_command (char *arg, int from_tty) |
c906108c | 9968 | { |
db107f19 | 9969 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9970 | } |
9971 | ||
9972 | static void | |
fba45db2 | 9973 | stop_command (char *arg, int from_tty) |
c906108c | 9974 | { |
a3f17187 | 9975 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9976 | Usage: stop in <function | address>\n\ |
a3f17187 | 9977 | stop at <line>\n")); |
c906108c SS |
9978 | } |
9979 | ||
9980 | static void | |
fba45db2 | 9981 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9982 | { |
9983 | int badInput = 0; | |
9984 | ||
c5aa993b | 9985 | if (arg == (char *) NULL) |
c906108c SS |
9986 | badInput = 1; |
9987 | else if (*arg != '*') | |
9988 | { | |
9989 | char *argptr = arg; | |
9990 | int hasColon = 0; | |
9991 | ||
4a64f543 | 9992 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9993 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9994 | function/method name. */ |
c906108c | 9995 | while (*argptr && !hasColon) |
c5aa993b JM |
9996 | { |
9997 | hasColon = (*argptr == ':'); | |
9998 | argptr++; | |
9999 | } | |
c906108c SS |
10000 | |
10001 | if (hasColon) | |
c5aa993b | 10002 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 10003 | else |
c5aa993b | 10004 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
10005 | } |
10006 | ||
10007 | if (badInput) | |
a3f17187 | 10008 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 10009 | else |
db107f19 | 10010 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10011 | } |
10012 | ||
10013 | static void | |
fba45db2 | 10014 | stopat_command (char *arg, int from_tty) |
c906108c SS |
10015 | { |
10016 | int badInput = 0; | |
10017 | ||
c5aa993b | 10018 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
10019 | badInput = 1; |
10020 | else | |
10021 | { | |
10022 | char *argptr = arg; | |
10023 | int hasColon = 0; | |
10024 | ||
4a64f543 MS |
10025 | /* Look for a ':'. If there is a '::' then get out, otherwise |
10026 | it is probably a line number. */ | |
c906108c | 10027 | while (*argptr && !hasColon) |
c5aa993b JM |
10028 | { |
10029 | hasColon = (*argptr == ':'); | |
10030 | argptr++; | |
10031 | } | |
c906108c SS |
10032 | |
10033 | if (hasColon) | |
c5aa993b | 10034 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 10035 | else |
c5aa993b | 10036 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
10037 | } |
10038 | ||
10039 | if (badInput) | |
a3f17187 | 10040 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 10041 | else |
db107f19 | 10042 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10043 | } |
10044 | ||
e7e0cddf SS |
10045 | /* The dynamic printf command is mostly like a regular breakpoint, but |
10046 | with a prewired command list consisting of a single output command, | |
10047 | built from extra arguments supplied on the dprintf command | |
10048 | line. */ | |
10049 | ||
da821c7b | 10050 | static void |
e7e0cddf SS |
10051 | dprintf_command (char *arg, int from_tty) |
10052 | { | |
f00aae0f KS |
10053 | struct event_location *location; |
10054 | struct cleanup *cleanup; | |
10055 | ||
10056 | location = string_to_event_location (&arg, current_language); | |
10057 | cleanup = make_cleanup_delete_event_location (location); | |
10058 | ||
10059 | /* If non-NULL, ARG should have been advanced past the location; | |
10060 | the next character must be ','. */ | |
10061 | if (arg != NULL) | |
10062 | { | |
10063 | if (arg[0] != ',' || arg[1] == '\0') | |
10064 | error (_("Format string required")); | |
10065 | else | |
10066 | { | |
10067 | /* Skip the comma. */ | |
10068 | ++arg; | |
10069 | } | |
10070 | } | |
10071 | ||
e7e0cddf | 10072 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
10073 | location, |
10074 | NULL, 0, arg, 1 /* parse arg */, | |
e7e0cddf SS |
10075 | 0, bp_dprintf, |
10076 | 0 /* Ignore count */, | |
10077 | pending_break_support, | |
10078 | &dprintf_breakpoint_ops, | |
10079 | from_tty, | |
10080 | 1 /* enabled */, | |
10081 | 0 /* internal */, | |
10082 | 0); | |
f00aae0f | 10083 | do_cleanups (cleanup); |
e7e0cddf SS |
10084 | } |
10085 | ||
d3ce09f5 SS |
10086 | static void |
10087 | agent_printf_command (char *arg, int from_tty) | |
10088 | { | |
10089 | error (_("May only run agent-printf on the target")); | |
10090 | } | |
10091 | ||
f1310107 TJB |
10092 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
10093 | ranged breakpoints. */ | |
10094 | ||
10095 | static int | |
10096 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
10097 | struct address_space *aspace, | |
09ac7c10 TT |
10098 | CORE_ADDR bp_addr, |
10099 | const struct target_waitstatus *ws) | |
f1310107 | 10100 | { |
09ac7c10 | 10101 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 10102 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
10103 | return 0; |
10104 | ||
f1310107 TJB |
10105 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
10106 | bl->length, aspace, bp_addr); | |
10107 | } | |
10108 | ||
10109 | /* Implement the "resources_needed" breakpoint_ops method for | |
10110 | ranged breakpoints. */ | |
10111 | ||
10112 | static int | |
10113 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
10114 | { | |
10115 | return target_ranged_break_num_registers (); | |
10116 | } | |
10117 | ||
10118 | /* Implement the "print_it" breakpoint_ops method for | |
10119 | ranged breakpoints. */ | |
10120 | ||
10121 | static enum print_stop_action | |
348d480f | 10122 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 10123 | { |
348d480f | 10124 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 10125 | struct bp_location *bl = b->loc; |
79a45e25 | 10126 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10127 | |
10128 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10129 | ||
10130 | /* Ranged breakpoints have only one location. */ | |
10131 | gdb_assert (bl && bl->next == NULL); | |
10132 | ||
10133 | annotate_breakpoint (b->number); | |
10134 | if (b->disposition == disp_del) | |
10135 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
10136 | else | |
10137 | ui_out_text (uiout, "\nRanged breakpoint "); | |
10138 | if (ui_out_is_mi_like_p (uiout)) | |
10139 | { | |
10140 | ui_out_field_string (uiout, "reason", | |
10141 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
10142 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
10143 | } | |
10144 | ui_out_field_int (uiout, "bkptno", b->number); | |
10145 | ui_out_text (uiout, ", "); | |
10146 | ||
10147 | return PRINT_SRC_AND_LOC; | |
10148 | } | |
10149 | ||
10150 | /* Implement the "print_one" breakpoint_ops method for | |
10151 | ranged breakpoints. */ | |
10152 | ||
10153 | static void | |
10154 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10155 | struct bp_location **last_loc) | |
10156 | { | |
10157 | struct bp_location *bl = b->loc; | |
10158 | struct value_print_options opts; | |
79a45e25 | 10159 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10160 | |
10161 | /* Ranged breakpoints have only one location. */ | |
10162 | gdb_assert (bl && bl->next == NULL); | |
10163 | ||
10164 | get_user_print_options (&opts); | |
10165 | ||
10166 | if (opts.addressprint) | |
10167 | /* We don't print the address range here, it will be printed later | |
10168 | by print_one_detail_ranged_breakpoint. */ | |
10169 | ui_out_field_skip (uiout, "addr"); | |
10170 | annotate_field (5); | |
10171 | print_breakpoint_location (b, bl); | |
10172 | *last_loc = bl; | |
10173 | } | |
10174 | ||
10175 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10176 | ranged breakpoints. */ | |
10177 | ||
10178 | static void | |
10179 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10180 | struct ui_out *uiout) | |
10181 | { | |
10182 | CORE_ADDR address_start, address_end; | |
10183 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10184 | struct ui_file *stb = mem_fileopen (); |
10185 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10186 | |
10187 | gdb_assert (bl); | |
10188 | ||
10189 | address_start = bl->address; | |
10190 | address_end = address_start + bl->length - 1; | |
10191 | ||
10192 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10193 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10194 | print_core_address (bl->gdbarch, address_start), |
10195 | print_core_address (bl->gdbarch, address_end)); | |
10196 | ui_out_field_stream (uiout, "addr", stb); | |
10197 | ui_out_text (uiout, "\n"); | |
10198 | ||
10199 | do_cleanups (cleanup); | |
10200 | } | |
10201 | ||
10202 | /* Implement the "print_mention" breakpoint_ops method for | |
10203 | ranged breakpoints. */ | |
10204 | ||
10205 | static void | |
10206 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10207 | { | |
10208 | struct bp_location *bl = b->loc; | |
79a45e25 | 10209 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10210 | |
10211 | gdb_assert (bl); | |
10212 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10213 | ||
10214 | if (ui_out_is_mi_like_p (uiout)) | |
10215 | return; | |
10216 | ||
10217 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10218 | b->number, paddress (bl->gdbarch, bl->address), | |
10219 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10220 | } | |
10221 | ||
10222 | /* Implement the "print_recreate" breakpoint_ops method for | |
10223 | ranged breakpoints. */ | |
10224 | ||
10225 | static void | |
10226 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10227 | { | |
f00aae0f KS |
10228 | fprintf_unfiltered (fp, "break-range %s, %s", |
10229 | event_location_to_string (b->location), | |
10230 | event_location_to_string (b->location_range_end)); | |
d9b3f62e | 10231 | print_recreate_thread (b, fp); |
f1310107 TJB |
10232 | } |
10233 | ||
10234 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10235 | ||
2060206e | 10236 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10237 | |
10238 | /* Find the address where the end of the breakpoint range should be | |
10239 | placed, given the SAL of the end of the range. This is so that if | |
10240 | the user provides a line number, the end of the range is set to the | |
10241 | last instruction of the given line. */ | |
10242 | ||
10243 | static CORE_ADDR | |
10244 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10245 | { | |
10246 | CORE_ADDR end; | |
10247 | ||
10248 | /* If the user provided a PC value, use it. Otherwise, | |
10249 | find the address of the end of the given location. */ | |
10250 | if (sal.explicit_pc) | |
10251 | end = sal.pc; | |
10252 | else | |
10253 | { | |
10254 | int ret; | |
10255 | CORE_ADDR start; | |
10256 | ||
10257 | ret = find_line_pc_range (sal, &start, &end); | |
10258 | if (!ret) | |
10259 | error (_("Could not find location of the end of the range.")); | |
10260 | ||
10261 | /* find_line_pc_range returns the start of the next line. */ | |
10262 | end--; | |
10263 | } | |
10264 | ||
10265 | return end; | |
10266 | } | |
10267 | ||
10268 | /* Implement the "break-range" CLI command. */ | |
10269 | ||
10270 | static void | |
10271 | break_range_command (char *arg, int from_tty) | |
10272 | { | |
10273 | char *arg_start, *addr_string_start, *addr_string_end; | |
10274 | struct linespec_result canonical_start, canonical_end; | |
10275 | int bp_count, can_use_bp, length; | |
10276 | CORE_ADDR end; | |
10277 | struct breakpoint *b; | |
10278 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10279 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10280 | struct linespec_sals *lsal_start, *lsal_end; |
f00aae0f | 10281 | struct event_location *start_location, *end_location; |
f1310107 TJB |
10282 | |
10283 | /* We don't support software ranged breakpoints. */ | |
10284 | if (target_ranged_break_num_registers () < 0) | |
10285 | error (_("This target does not support hardware ranged breakpoints.")); | |
10286 | ||
10287 | bp_count = hw_breakpoint_used_count (); | |
10288 | bp_count += target_ranged_break_num_registers (); | |
10289 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10290 | bp_count, 0); | |
10291 | if (can_use_bp < 0) | |
10292 | error (_("Hardware breakpoints used exceeds limit.")); | |
10293 | ||
f8eba3c6 | 10294 | arg = skip_spaces (arg); |
f1310107 TJB |
10295 | if (arg == NULL || arg[0] == '\0') |
10296 | error(_("No address range specified.")); | |
10297 | ||
f1310107 TJB |
10298 | init_linespec_result (&canonical_start); |
10299 | ||
f8eba3c6 | 10300 | arg_start = arg; |
f00aae0f KS |
10301 | start_location = string_to_event_location (&arg, current_language); |
10302 | cleanup_bkpt = make_cleanup_delete_event_location (start_location); | |
10303 | parse_breakpoint_sals (start_location, &canonical_start); | |
10304 | make_cleanup_destroy_linespec_result (&canonical_start); | |
f1310107 TJB |
10305 | |
10306 | if (arg[0] != ',') | |
10307 | error (_("Too few arguments.")); | |
f8eba3c6 | 10308 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10309 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10310 | |
10311 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10312 | ||
10313 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10314 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10315 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10316 | ||
f8eba3c6 TT |
10317 | sal_start = lsal_start->sals.sals[0]; |
10318 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10319 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10320 | |
10321 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10322 | arg = skip_spaces (arg); |
f1310107 TJB |
10323 | |
10324 | /* Parse the end location. */ | |
10325 | ||
f1310107 TJB |
10326 | init_linespec_result (&canonical_end); |
10327 | arg_start = arg; | |
10328 | ||
f8eba3c6 | 10329 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10330 | parse_breakpoint_sals because we need to specify the start location's |
10331 | symtab and line as the default symtab and line for the end of the | |
10332 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10333 | where +14 means 14 lines from the start location. */ | |
f00aae0f KS |
10334 | end_location = string_to_event_location (&arg, current_language); |
10335 | make_cleanup_delete_event_location (end_location); | |
10336 | decode_line_full (end_location, DECODE_LINE_FUNFIRSTLINE, | |
f8eba3c6 TT |
10337 | sal_start.symtab, sal_start.line, |
10338 | &canonical_end, NULL, NULL); | |
10339 | ||
10340 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10341 | |
f8eba3c6 | 10342 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10343 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10344 | |
10345 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10346 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10347 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10348 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10349 | ||
f8eba3c6 | 10350 | sal_end = lsal_end->sals.sals[0]; |
f1310107 TJB |
10351 | |
10352 | end = find_breakpoint_range_end (sal_end); | |
10353 | if (sal_start.pc > end) | |
177b42fe | 10354 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10355 | |
10356 | length = end - sal_start.pc + 1; | |
10357 | if (length < 0) | |
10358 | /* Length overflowed. */ | |
10359 | error (_("Address range too large.")); | |
10360 | else if (length == 1) | |
10361 | { | |
10362 | /* This range is simple enough to be handled by | |
10363 | the `hbreak' command. */ | |
10364 | hbreak_command (addr_string_start, 1); | |
10365 | ||
10366 | do_cleanups (cleanup_bkpt); | |
10367 | ||
10368 | return; | |
10369 | } | |
10370 | ||
10371 | /* Now set up the breakpoint. */ | |
10372 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10373 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10374 | set_breakpoint_count (breakpoint_count + 1); |
10375 | b->number = breakpoint_count; | |
10376 | b->disposition = disp_donttouch; | |
f00aae0f KS |
10377 | b->location = copy_event_location (start_location); |
10378 | b->location_range_end = copy_event_location (end_location); | |
f1310107 TJB |
10379 | b->loc->length = length; |
10380 | ||
f8eba3c6 | 10381 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10382 | |
10383 | mention (b); | |
8d3788bd | 10384 | observer_notify_breakpoint_created (b); |
44702360 | 10385 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10386 | } |
10387 | ||
4a64f543 MS |
10388 | /* Return non-zero if EXP is verified as constant. Returned zero |
10389 | means EXP is variable. Also the constant detection may fail for | |
10390 | some constant expressions and in such case still falsely return | |
10391 | zero. */ | |
2e6e3d9c | 10392 | |
65d79d4b SDJ |
10393 | static int |
10394 | watchpoint_exp_is_const (const struct expression *exp) | |
10395 | { | |
10396 | int i = exp->nelts; | |
10397 | ||
10398 | while (i > 0) | |
10399 | { | |
10400 | int oplenp, argsp; | |
10401 | ||
10402 | /* We are only interested in the descriptor of each element. */ | |
10403 | operator_length (exp, i, &oplenp, &argsp); | |
10404 | i -= oplenp; | |
10405 | ||
10406 | switch (exp->elts[i].opcode) | |
10407 | { | |
10408 | case BINOP_ADD: | |
10409 | case BINOP_SUB: | |
10410 | case BINOP_MUL: | |
10411 | case BINOP_DIV: | |
10412 | case BINOP_REM: | |
10413 | case BINOP_MOD: | |
10414 | case BINOP_LSH: | |
10415 | case BINOP_RSH: | |
10416 | case BINOP_LOGICAL_AND: | |
10417 | case BINOP_LOGICAL_OR: | |
10418 | case BINOP_BITWISE_AND: | |
10419 | case BINOP_BITWISE_IOR: | |
10420 | case BINOP_BITWISE_XOR: | |
10421 | case BINOP_EQUAL: | |
10422 | case BINOP_NOTEQUAL: | |
10423 | case BINOP_LESS: | |
10424 | case BINOP_GTR: | |
10425 | case BINOP_LEQ: | |
10426 | case BINOP_GEQ: | |
10427 | case BINOP_REPEAT: | |
10428 | case BINOP_COMMA: | |
10429 | case BINOP_EXP: | |
10430 | case BINOP_MIN: | |
10431 | case BINOP_MAX: | |
10432 | case BINOP_INTDIV: | |
10433 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10434 | case TERNOP_COND: |
10435 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10436 | |
10437 | case OP_LONG: | |
10438 | case OP_DOUBLE: | |
10439 | case OP_DECFLOAT: | |
10440 | case OP_LAST: | |
10441 | case OP_COMPLEX: | |
10442 | case OP_STRING: | |
65d79d4b SDJ |
10443 | case OP_ARRAY: |
10444 | case OP_TYPE: | |
608b4967 TT |
10445 | case OP_TYPEOF: |
10446 | case OP_DECLTYPE: | |
6e72ca20 | 10447 | case OP_TYPEID: |
65d79d4b SDJ |
10448 | case OP_NAME: |
10449 | case OP_OBJC_NSSTRING: | |
10450 | ||
10451 | case UNOP_NEG: | |
10452 | case UNOP_LOGICAL_NOT: | |
10453 | case UNOP_COMPLEMENT: | |
10454 | case UNOP_ADDR: | |
10455 | case UNOP_HIGH: | |
aeaa2474 | 10456 | case UNOP_CAST: |
9eaf6705 TT |
10457 | |
10458 | case UNOP_CAST_TYPE: | |
10459 | case UNOP_REINTERPRET_CAST: | |
10460 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10461 | /* Unary, binary and ternary operators: We have to check |
10462 | their operands. If they are constant, then so is the | |
10463 | result of that operation. For instance, if A and B are | |
10464 | determined to be constants, then so is "A + B". | |
10465 | ||
10466 | UNOP_IND is one exception to the rule above, because the | |
10467 | value of *ADDR is not necessarily a constant, even when | |
10468 | ADDR is. */ | |
65d79d4b SDJ |
10469 | break; |
10470 | ||
10471 | case OP_VAR_VALUE: | |
10472 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10473 | |
65d79d4b | 10474 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10475 | possible that a buggy compiler could mark a variable as |
10476 | constant even when it is not, and TYPE_CONST would return | |
10477 | true in this case, while SYMBOL_CLASS wouldn't. | |
10478 | ||
10479 | We also have to check for function symbols because they | |
10480 | are always constant. */ | |
65d79d4b SDJ |
10481 | { |
10482 | struct symbol *s = exp->elts[i + 2].symbol; | |
10483 | ||
10484 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10485 | && SYMBOL_CLASS (s) != LOC_CONST | |
10486 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10487 | return 0; | |
10488 | break; | |
10489 | } | |
10490 | ||
10491 | /* The default action is to return 0 because we are using | |
10492 | the optimistic approach here: If we don't know something, | |
10493 | then it is not a constant. */ | |
10494 | default: | |
10495 | return 0; | |
10496 | } | |
10497 | } | |
10498 | ||
10499 | return 1; | |
10500 | } | |
10501 | ||
3a5c3e22 PA |
10502 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10503 | ||
10504 | static void | |
10505 | dtor_watchpoint (struct breakpoint *self) | |
10506 | { | |
10507 | struct watchpoint *w = (struct watchpoint *) self; | |
10508 | ||
10509 | xfree (w->cond_exp); | |
10510 | xfree (w->exp); | |
10511 | xfree (w->exp_string); | |
10512 | xfree (w->exp_string_reparse); | |
10513 | value_free (w->val); | |
10514 | ||
10515 | base_breakpoint_ops.dtor (self); | |
10516 | } | |
10517 | ||
348d480f PA |
10518 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10519 | ||
10520 | static void | |
10521 | re_set_watchpoint (struct breakpoint *b) | |
10522 | { | |
3a5c3e22 PA |
10523 | struct watchpoint *w = (struct watchpoint *) b; |
10524 | ||
348d480f PA |
10525 | /* Watchpoint can be either on expression using entirely global |
10526 | variables, or it can be on local variables. | |
10527 | ||
10528 | Watchpoints of the first kind are never auto-deleted, and even | |
10529 | persist across program restarts. Since they can use variables | |
10530 | from shared libraries, we need to reparse expression as libraries | |
10531 | are loaded and unloaded. | |
10532 | ||
10533 | Watchpoints on local variables can also change meaning as result | |
10534 | of solib event. For example, if a watchpoint uses both a local | |
10535 | and a global variables in expression, it's a local watchpoint, | |
10536 | but unloading of a shared library will make the expression | |
10537 | invalid. This is not a very common use case, but we still | |
10538 | re-evaluate expression, to avoid surprises to the user. | |
10539 | ||
10540 | Note that for local watchpoints, we re-evaluate it only if | |
10541 | watchpoints frame id is still valid. If it's not, it means the | |
10542 | watchpoint is out of scope and will be deleted soon. In fact, | |
10543 | I'm not sure we'll ever be called in this case. | |
10544 | ||
10545 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10546 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10547 | |
3a5c3e22 PA |
10548 | Don't do anything about disabled watchpoints, since they will be |
10549 | reevaluated again when enabled. */ | |
10550 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10551 | } |
10552 | ||
77b06cd7 TJB |
10553 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10554 | ||
10555 | static int | |
10556 | insert_watchpoint (struct bp_location *bl) | |
10557 | { | |
3a5c3e22 PA |
10558 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10559 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10560 | |
10561 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10562 | w->cond_exp); |
77b06cd7 TJB |
10563 | } |
10564 | ||
10565 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10566 | ||
10567 | static int | |
10568 | remove_watchpoint (struct bp_location *bl) | |
10569 | { | |
3a5c3e22 PA |
10570 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10571 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10572 | |
10573 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10574 | w->cond_exp); |
e09342b5 TJB |
10575 | } |
10576 | ||
e09342b5 | 10577 | static int |
348d480f | 10578 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10579 | struct address_space *aspace, CORE_ADDR bp_addr, |
10580 | const struct target_waitstatus *ws) | |
e09342b5 | 10581 | { |
348d480f | 10582 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10583 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10584 | |
348d480f PA |
10585 | /* Continuable hardware watchpoints are treated as non-existent if the |
10586 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10587 | some data address). Otherwise gdb won't stop on a break instruction | |
10588 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10589 | been defined. Also skip watchpoints which we know did not trigger | |
10590 | (did not match the data address). */ | |
10591 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10592 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10593 | return 0; |
9c06b0b4 | 10594 | |
348d480f | 10595 | return 1; |
9c06b0b4 TJB |
10596 | } |
10597 | ||
348d480f PA |
10598 | static void |
10599 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10600 | { |
348d480f | 10601 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10602 | |
348d480f | 10603 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10604 | } |
10605 | ||
10606 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10607 | hardware watchpoints. */ |
9c06b0b4 TJB |
10608 | |
10609 | static int | |
348d480f | 10610 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10611 | { |
3a5c3e22 PA |
10612 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10613 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10614 | |
10615 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10616 | } |
10617 | ||
10618 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10619 | hardware watchpoints. */ |
9c06b0b4 TJB |
10620 | |
10621 | static int | |
348d480f | 10622 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10623 | { |
efa80663 PA |
10624 | /* Read and access watchpoints only work with hardware support. */ |
10625 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10626 | } |
10627 | ||
9c06b0b4 | 10628 | static enum print_stop_action |
348d480f | 10629 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10630 | { |
348d480f PA |
10631 | struct cleanup *old_chain; |
10632 | struct breakpoint *b; | |
f99d8bf4 | 10633 | struct ui_file *stb; |
348d480f | 10634 | enum print_stop_action result; |
3a5c3e22 | 10635 | struct watchpoint *w; |
79a45e25 | 10636 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10637 | |
10638 | gdb_assert (bs->bp_location_at != NULL); | |
10639 | ||
348d480f | 10640 | b = bs->breakpoint_at; |
3a5c3e22 | 10641 | w = (struct watchpoint *) b; |
348d480f | 10642 | |
f99d8bf4 PA |
10643 | stb = mem_fileopen (); |
10644 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10645 | |
10646 | switch (b->type) | |
10647 | { | |
348d480f | 10648 | case bp_watchpoint: |
9c06b0b4 TJB |
10649 | case bp_hardware_watchpoint: |
10650 | annotate_watchpoint (b->number); | |
10651 | if (ui_out_is_mi_like_p (uiout)) | |
10652 | ui_out_field_string | |
10653 | (uiout, "reason", | |
10654 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10655 | mention (b); |
10656 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10657 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10658 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10659 | ui_out_field_stream (uiout, "old", stb); |
10660 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10661 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10662 | ui_out_field_stream (uiout, "new", stb); |
10663 | ui_out_text (uiout, "\n"); | |
10664 | /* More than one watchpoint may have been triggered. */ | |
10665 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10666 | break; |
10667 | ||
10668 | case bp_read_watchpoint: | |
10669 | if (ui_out_is_mi_like_p (uiout)) | |
10670 | ui_out_field_string | |
10671 | (uiout, "reason", | |
10672 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10673 | mention (b); |
10674 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10675 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10676 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10677 | ui_out_field_stream (uiout, "value", stb); |
10678 | ui_out_text (uiout, "\n"); | |
10679 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10680 | break; |
10681 | ||
10682 | case bp_access_watchpoint: | |
348d480f PA |
10683 | if (bs->old_val != NULL) |
10684 | { | |
10685 | annotate_watchpoint (b->number); | |
10686 | if (ui_out_is_mi_like_p (uiout)) | |
10687 | ui_out_field_string | |
10688 | (uiout, "reason", | |
10689 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10690 | mention (b); | |
10691 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10692 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10693 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10694 | ui_out_field_stream (uiout, "old", stb); |
10695 | ui_out_text (uiout, "\nNew value = "); | |
10696 | } | |
10697 | else | |
10698 | { | |
10699 | mention (b); | |
10700 | if (ui_out_is_mi_like_p (uiout)) | |
10701 | ui_out_field_string | |
10702 | (uiout, "reason", | |
10703 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10704 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10705 | ui_out_text (uiout, "\nValue = "); | |
10706 | } | |
f99d8bf4 | 10707 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10708 | ui_out_field_stream (uiout, "new", stb); |
10709 | ui_out_text (uiout, "\n"); | |
10710 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10711 | break; |
10712 | default: | |
348d480f | 10713 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10714 | } |
10715 | ||
348d480f PA |
10716 | do_cleanups (old_chain); |
10717 | return result; | |
10718 | } | |
10719 | ||
10720 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10721 | watchpoints. */ | |
10722 | ||
10723 | static void | |
10724 | print_mention_watchpoint (struct breakpoint *b) | |
10725 | { | |
10726 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10727 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10728 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10729 | |
10730 | switch (b->type) | |
10731 | { | |
10732 | case bp_watchpoint: | |
10733 | ui_out_text (uiout, "Watchpoint "); | |
10734 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10735 | break; | |
10736 | case bp_hardware_watchpoint: | |
10737 | ui_out_text (uiout, "Hardware watchpoint "); | |
10738 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10739 | break; | |
10740 | case bp_read_watchpoint: | |
10741 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10742 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10743 | break; | |
10744 | case bp_access_watchpoint: | |
10745 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10746 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10747 | break; | |
10748 | default: | |
10749 | internal_error (__FILE__, __LINE__, | |
10750 | _("Invalid hardware watchpoint type.")); | |
10751 | } | |
10752 | ||
10753 | ui_out_field_int (uiout, "number", b->number); | |
10754 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10755 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10756 | do_cleanups (ui_out_chain); |
10757 | } | |
10758 | ||
10759 | /* Implement the "print_recreate" breakpoint_ops method for | |
10760 | watchpoints. */ | |
10761 | ||
10762 | static void | |
10763 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10764 | { | |
3a5c3e22 PA |
10765 | struct watchpoint *w = (struct watchpoint *) b; |
10766 | ||
348d480f PA |
10767 | switch (b->type) |
10768 | { | |
10769 | case bp_watchpoint: | |
10770 | case bp_hardware_watchpoint: | |
10771 | fprintf_unfiltered (fp, "watch"); | |
10772 | break; | |
10773 | case bp_read_watchpoint: | |
10774 | fprintf_unfiltered (fp, "rwatch"); | |
10775 | break; | |
10776 | case bp_access_watchpoint: | |
10777 | fprintf_unfiltered (fp, "awatch"); | |
10778 | break; | |
10779 | default: | |
10780 | internal_error (__FILE__, __LINE__, | |
10781 | _("Invalid watchpoint type.")); | |
10782 | } | |
10783 | ||
3a5c3e22 | 10784 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10785 | print_recreate_thread (b, fp); |
348d480f PA |
10786 | } |
10787 | ||
427cd150 TT |
10788 | /* Implement the "explains_signal" breakpoint_ops method for |
10789 | watchpoints. */ | |
10790 | ||
47591c29 | 10791 | static int |
427cd150 TT |
10792 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10793 | { | |
10794 | /* A software watchpoint cannot cause a signal other than | |
10795 | GDB_SIGNAL_TRAP. */ | |
10796 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10797 | return 0; |
427cd150 | 10798 | |
47591c29 | 10799 | return 1; |
427cd150 TT |
10800 | } |
10801 | ||
348d480f PA |
10802 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10803 | ||
2060206e | 10804 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10805 | |
10806 | /* Implement the "insert" breakpoint_ops method for | |
10807 | masked hardware watchpoints. */ | |
10808 | ||
10809 | static int | |
10810 | insert_masked_watchpoint (struct bp_location *bl) | |
10811 | { | |
3a5c3e22 PA |
10812 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10813 | ||
10814 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10815 | bl->watchpoint_type); |
10816 | } | |
10817 | ||
10818 | /* Implement the "remove" breakpoint_ops method for | |
10819 | masked hardware watchpoints. */ | |
10820 | ||
10821 | static int | |
10822 | remove_masked_watchpoint (struct bp_location *bl) | |
10823 | { | |
3a5c3e22 PA |
10824 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10825 | ||
10826 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10827 | bl->watchpoint_type); |
10828 | } | |
10829 | ||
10830 | /* Implement the "resources_needed" breakpoint_ops method for | |
10831 | masked hardware watchpoints. */ | |
10832 | ||
10833 | static int | |
10834 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10835 | { | |
3a5c3e22 PA |
10836 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10837 | ||
10838 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10839 | } |
10840 | ||
10841 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10842 | masked hardware watchpoints. */ | |
10843 | ||
10844 | static int | |
10845 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10846 | { | |
10847 | return 0; | |
10848 | } | |
10849 | ||
10850 | /* Implement the "print_it" breakpoint_ops method for | |
10851 | masked hardware watchpoints. */ | |
10852 | ||
10853 | static enum print_stop_action | |
10854 | print_it_masked_watchpoint (bpstat bs) | |
10855 | { | |
10856 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10857 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10858 | |
10859 | /* Masked watchpoints have only one location. */ | |
10860 | gdb_assert (b->loc && b->loc->next == NULL); | |
10861 | ||
10862 | switch (b->type) | |
10863 | { | |
10864 | case bp_hardware_watchpoint: | |
10865 | annotate_watchpoint (b->number); | |
10866 | if (ui_out_is_mi_like_p (uiout)) | |
10867 | ui_out_field_string | |
10868 | (uiout, "reason", | |
10869 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10870 | break; | |
10871 | ||
10872 | case bp_read_watchpoint: | |
10873 | if (ui_out_is_mi_like_p (uiout)) | |
10874 | ui_out_field_string | |
10875 | (uiout, "reason", | |
10876 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10877 | break; | |
10878 | ||
10879 | case bp_access_watchpoint: | |
10880 | if (ui_out_is_mi_like_p (uiout)) | |
10881 | ui_out_field_string | |
10882 | (uiout, "reason", | |
10883 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10884 | break; | |
10885 | default: | |
10886 | internal_error (__FILE__, __LINE__, | |
10887 | _("Invalid hardware watchpoint type.")); | |
10888 | } | |
10889 | ||
10890 | mention (b); | |
9c06b0b4 TJB |
10891 | ui_out_text (uiout, _("\n\ |
10892 | Check the underlying instruction at PC for the memory\n\ | |
10893 | address and value which triggered this watchpoint.\n")); | |
10894 | ui_out_text (uiout, "\n"); | |
10895 | ||
10896 | /* More than one watchpoint may have been triggered. */ | |
10897 | return PRINT_UNKNOWN; | |
10898 | } | |
10899 | ||
10900 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10901 | masked hardware watchpoints. */ | |
10902 | ||
10903 | static void | |
10904 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10905 | struct ui_out *uiout) | |
10906 | { | |
3a5c3e22 PA |
10907 | struct watchpoint *w = (struct watchpoint *) b; |
10908 | ||
9c06b0b4 TJB |
10909 | /* Masked watchpoints have only one location. */ |
10910 | gdb_assert (b->loc && b->loc->next == NULL); | |
10911 | ||
10912 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10913 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10914 | ui_out_text (uiout, "\n"); |
10915 | } | |
10916 | ||
10917 | /* Implement the "print_mention" breakpoint_ops method for | |
10918 | masked hardware watchpoints. */ | |
10919 | ||
10920 | static void | |
10921 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10922 | { | |
3a5c3e22 | 10923 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10924 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10925 | struct cleanup *ui_out_chain; |
10926 | ||
10927 | switch (b->type) | |
10928 | { | |
10929 | case bp_hardware_watchpoint: | |
10930 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10931 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10932 | break; | |
10933 | case bp_read_watchpoint: | |
10934 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10935 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10936 | break; | |
10937 | case bp_access_watchpoint: | |
10938 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10939 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10940 | break; | |
10941 | default: | |
10942 | internal_error (__FILE__, __LINE__, | |
10943 | _("Invalid hardware watchpoint type.")); | |
10944 | } | |
10945 | ||
10946 | ui_out_field_int (uiout, "number", b->number); | |
10947 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10948 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10949 | do_cleanups (ui_out_chain); |
10950 | } | |
10951 | ||
10952 | /* Implement the "print_recreate" breakpoint_ops method for | |
10953 | masked hardware watchpoints. */ | |
10954 | ||
10955 | static void | |
10956 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10957 | { | |
3a5c3e22 | 10958 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10959 | char tmp[40]; |
10960 | ||
10961 | switch (b->type) | |
10962 | { | |
10963 | case bp_hardware_watchpoint: | |
10964 | fprintf_unfiltered (fp, "watch"); | |
10965 | break; | |
10966 | case bp_read_watchpoint: | |
10967 | fprintf_unfiltered (fp, "rwatch"); | |
10968 | break; | |
10969 | case bp_access_watchpoint: | |
10970 | fprintf_unfiltered (fp, "awatch"); | |
10971 | break; | |
10972 | default: | |
10973 | internal_error (__FILE__, __LINE__, | |
10974 | _("Invalid hardware watchpoint type.")); | |
10975 | } | |
10976 | ||
3a5c3e22 PA |
10977 | sprintf_vma (tmp, w->hw_wp_mask); |
10978 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10979 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10980 | } |
10981 | ||
10982 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10983 | ||
2060206e | 10984 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10985 | |
10986 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10987 | ||
10988 | static int | |
10989 | is_masked_watchpoint (const struct breakpoint *b) | |
10990 | { | |
10991 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10992 | } | |
10993 | ||
53a5351d JM |
10994 | /* accessflag: hw_write: watch write, |
10995 | hw_read: watch read, | |
10996 | hw_access: watch access (read or write) */ | |
c906108c | 10997 | static void |
bbc13ae3 | 10998 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10999 | int just_location, int internal) |
c906108c | 11000 | { |
d983da9c | 11001 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 11002 | struct expression *exp; |
270140bd | 11003 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 11004 | struct value *val, *mark, *result; |
bb9d5f81 | 11005 | int saved_bitpos = 0, saved_bitsize = 0; |
c906108c | 11006 | struct frame_info *frame; |
bbc13ae3 KS |
11007 | const char *exp_start = NULL; |
11008 | const char *exp_end = NULL; | |
11009 | const char *tok, *end_tok; | |
9c06b0b4 | 11010 | int toklen = -1; |
bbc13ae3 KS |
11011 | const char *cond_start = NULL; |
11012 | const char *cond_end = NULL; | |
c906108c | 11013 | enum bptype bp_type; |
37e4754d | 11014 | int thread = -1; |
0cf6dd15 | 11015 | int pc = 0; |
9c06b0b4 TJB |
11016 | /* Flag to indicate whether we are going to use masks for |
11017 | the hardware watchpoint. */ | |
11018 | int use_mask = 0; | |
11019 | CORE_ADDR mask = 0; | |
3a5c3e22 | 11020 | struct watchpoint *w; |
bbc13ae3 KS |
11021 | char *expression; |
11022 | struct cleanup *back_to; | |
c906108c | 11023 | |
37e4754d LM |
11024 | /* Make sure that we actually have parameters to parse. */ |
11025 | if (arg != NULL && arg[0] != '\0') | |
11026 | { | |
bbc13ae3 KS |
11027 | const char *value_start; |
11028 | ||
11029 | exp_end = arg + strlen (arg); | |
37e4754d | 11030 | |
9c06b0b4 TJB |
11031 | /* Look for "parameter value" pairs at the end |
11032 | of the arguments string. */ | |
bbc13ae3 | 11033 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
11034 | { |
11035 | /* Skip whitespace at the end of the argument list. */ | |
11036 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11037 | tok--; | |
11038 | ||
11039 | /* Find the beginning of the last token. | |
11040 | This is the value of the parameter. */ | |
11041 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11042 | tok--; | |
11043 | value_start = tok + 1; | |
11044 | ||
11045 | /* Skip whitespace. */ | |
11046 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11047 | tok--; | |
11048 | ||
11049 | end_tok = tok; | |
11050 | ||
11051 | /* Find the beginning of the second to last token. | |
11052 | This is the parameter itself. */ | |
11053 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11054 | tok--; | |
11055 | tok++; | |
11056 | toklen = end_tok - tok + 1; | |
11057 | ||
61012eef | 11058 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 TJB |
11059 | { |
11060 | /* At this point we've found a "thread" token, which means | |
11061 | the user is trying to set a watchpoint that triggers | |
11062 | only in a specific thread. */ | |
11063 | char *endp; | |
37e4754d | 11064 | |
9c06b0b4 TJB |
11065 | if (thread != -1) |
11066 | error(_("You can specify only one thread.")); | |
37e4754d | 11067 | |
9c06b0b4 TJB |
11068 | /* Extract the thread ID from the next token. */ |
11069 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 11070 | |
9c06b0b4 TJB |
11071 | /* Check if the user provided a valid numeric value for the |
11072 | thread ID. */ | |
11073 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
11074 | error (_("Invalid thread ID specification %s."), value_start); | |
11075 | ||
11076 | /* Check if the thread actually exists. */ | |
11077 | if (!valid_thread_id (thread)) | |
af4908ba | 11078 | invalid_thread_id_error (thread); |
9c06b0b4 | 11079 | } |
61012eef | 11080 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
11081 | { |
11082 | /* We've found a "mask" token, which means the user wants to | |
11083 | create a hardware watchpoint that is going to have the mask | |
11084 | facility. */ | |
11085 | struct value *mask_value, *mark; | |
37e4754d | 11086 | |
9c06b0b4 TJB |
11087 | if (use_mask) |
11088 | error(_("You can specify only one mask.")); | |
37e4754d | 11089 | |
9c06b0b4 | 11090 | use_mask = just_location = 1; |
37e4754d | 11091 | |
9c06b0b4 TJB |
11092 | mark = value_mark (); |
11093 | mask_value = parse_to_comma_and_eval (&value_start); | |
11094 | mask = value_as_address (mask_value); | |
11095 | value_free_to_mark (mark); | |
11096 | } | |
11097 | else | |
11098 | /* We didn't recognize what we found. We should stop here. */ | |
11099 | break; | |
37e4754d | 11100 | |
9c06b0b4 TJB |
11101 | /* Truncate the string and get rid of the "parameter value" pair before |
11102 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 11103 | exp_end = tok; |
9c06b0b4 | 11104 | } |
37e4754d | 11105 | } |
bbc13ae3 KS |
11106 | else |
11107 | exp_end = arg; | |
37e4754d | 11108 | |
bbc13ae3 KS |
11109 | /* Parse the rest of the arguments. From here on out, everything |
11110 | is in terms of a newly allocated string instead of the original | |
11111 | ARG. */ | |
c906108c | 11112 | innermost_block = NULL; |
bbc13ae3 KS |
11113 | expression = savestring (arg, exp_end - arg); |
11114 | back_to = make_cleanup (xfree, expression); | |
11115 | exp_start = arg = expression; | |
1bb9788d | 11116 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 11117 | exp_end = arg; |
fa8a61dc TT |
11118 | /* Remove trailing whitespace from the expression before saving it. |
11119 | This makes the eventual display of the expression string a bit | |
11120 | prettier. */ | |
11121 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
11122 | --exp_end; | |
11123 | ||
65d79d4b SDJ |
11124 | /* Checking if the expression is not constant. */ |
11125 | if (watchpoint_exp_is_const (exp)) | |
11126 | { | |
11127 | int len; | |
11128 | ||
11129 | len = exp_end - exp_start; | |
11130 | while (len > 0 && isspace (exp_start[len - 1])) | |
11131 | len--; | |
11132 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
11133 | } | |
11134 | ||
c906108c SS |
11135 | exp_valid_block = innermost_block; |
11136 | mark = value_mark (); | |
3a1115a0 | 11137 | fetch_subexp_value (exp, &pc, &val, &result, NULL, just_location); |
06a64a0b | 11138 | |
bb9d5f81 PP |
11139 | if (val != NULL && just_location) |
11140 | { | |
11141 | saved_bitpos = value_bitpos (val); | |
11142 | saved_bitsize = value_bitsize (val); | |
11143 | } | |
11144 | ||
06a64a0b TT |
11145 | if (just_location) |
11146 | { | |
9c06b0b4 TJB |
11147 | int ret; |
11148 | ||
06a64a0b | 11149 | exp_valid_block = NULL; |
a1442452 | 11150 | val = value_addr (result); |
06a64a0b TT |
11151 | release_value (val); |
11152 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
11153 | |
11154 | if (use_mask) | |
11155 | { | |
11156 | ret = target_masked_watch_num_registers (value_as_address (val), | |
11157 | mask); | |
11158 | if (ret == -1) | |
11159 | error (_("This target does not support masked watchpoints.")); | |
11160 | else if (ret == -2) | |
11161 | error (_("Invalid mask or memory region.")); | |
11162 | } | |
06a64a0b TT |
11163 | } |
11164 | else if (val != NULL) | |
fa4727a6 | 11165 | release_value (val); |
c906108c | 11166 | |
bbc13ae3 KS |
11167 | tok = skip_spaces_const (arg); |
11168 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11169 | |
11170 | toklen = end_tok - tok; | |
11171 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11172 | { | |
2d134ed3 PA |
11173 | struct expression *cond; |
11174 | ||
60e1c644 | 11175 | innermost_block = NULL; |
c906108c | 11176 | tok = cond_start = end_tok + 1; |
1bb9788d | 11177 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11178 | |
11179 | /* The watchpoint expression may not be local, but the condition | |
11180 | may still be. E.g.: `watch global if local > 0'. */ | |
11181 | cond_exp_valid_block = innermost_block; | |
11182 | ||
2d134ed3 | 11183 | xfree (cond); |
c906108c SS |
11184 | cond_end = tok; |
11185 | } | |
11186 | if (*tok) | |
8a3fe4f8 | 11187 | error (_("Junk at end of command.")); |
c906108c | 11188 | |
d983da9c | 11189 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11190 | |
11191 | /* If the expression is "local", then set up a "watchpoint scope" | |
11192 | breakpoint at the point where we've left the scope of the watchpoint | |
11193 | expression. Create the scope breakpoint before the watchpoint, so | |
11194 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11195 | if (exp_valid_block && frame) |
d983da9c | 11196 | { |
edb3359d DJ |
11197 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11198 | { | |
11199 | scope_breakpoint | |
a6d9a66e UW |
11200 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11201 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11202 | bp_watchpoint_scope, |
11203 | &momentary_breakpoint_ops); | |
d983da9c | 11204 | |
edb3359d | 11205 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11206 | |
edb3359d DJ |
11207 | /* Automatically delete the breakpoint when it hits. */ |
11208 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11209 | |
edb3359d DJ |
11210 | /* Only break in the proper frame (help with recursion). */ |
11211 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11212 | |
edb3359d | 11213 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11214 | scope_breakpoint->loc->gdbarch |
11215 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11216 | scope_breakpoint->loc->requested_address |
11217 | = frame_unwind_caller_pc (frame); | |
11218 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11219 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11220 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11221 | scope_breakpoint->type); |
11222 | } | |
d983da9c DJ |
11223 | } |
11224 | ||
e8369a73 AB |
11225 | /* Now set up the breakpoint. We create all watchpoints as hardware |
11226 | watchpoints here even if hardware watchpoints are turned off, a call | |
11227 | to update_watchpoint later in this function will cause the type to | |
11228 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
11229 | ||
11230 | if (accessflag == hw_read) | |
11231 | bp_type = bp_read_watchpoint; | |
11232 | else if (accessflag == hw_access) | |
11233 | bp_type = bp_access_watchpoint; | |
11234 | else | |
11235 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 PA |
11236 | |
11237 | w = XCNEW (struct watchpoint); | |
11238 | b = &w->base; | |
348d480f | 11239 | if (use_mask) |
3a5c3e22 PA |
11240 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11241 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11242 | else |
3a5c3e22 PA |
11243 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11244 | &watchpoint_breakpoint_ops); | |
37e4754d | 11245 | b->thread = thread; |
b5de0fa7 | 11246 | b->disposition = disp_donttouch; |
348d480f | 11247 | b->pspace = current_program_space; |
3a5c3e22 PA |
11248 | w->exp = exp; |
11249 | w->exp_valid_block = exp_valid_block; | |
11250 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11251 | if (just_location) |
11252 | { | |
11253 | struct type *t = value_type (val); | |
11254 | CORE_ADDR addr = value_as_address (val); | |
11255 | char *name; | |
11256 | ||
11257 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11258 | name = type_to_string (t); | |
11259 | ||
3a5c3e22 | 11260 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11261 | core_addr_to_string (addr)); |
06a64a0b TT |
11262 | xfree (name); |
11263 | ||
3a5c3e22 | 11264 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11265 | (int) (exp_end - exp_start), exp_start); |
11266 | ||
06a64a0b TT |
11267 | /* The above expression is in C. */ |
11268 | b->language = language_c; | |
11269 | } | |
11270 | else | |
3a5c3e22 | 11271 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11272 | |
11273 | if (use_mask) | |
11274 | { | |
3a5c3e22 | 11275 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11276 | } |
11277 | else | |
11278 | { | |
3a5c3e22 | 11279 | w->val = val; |
bb9d5f81 PP |
11280 | w->val_bitpos = saved_bitpos; |
11281 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 11282 | w->val_valid = 1; |
9c06b0b4 | 11283 | } |
77b06cd7 | 11284 | |
c906108c SS |
11285 | if (cond_start) |
11286 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11287 | else | |
11288 | b->cond_string = 0; | |
c5aa993b | 11289 | |
c906108c | 11290 | if (frame) |
f6bc2008 | 11291 | { |
3a5c3e22 PA |
11292 | w->watchpoint_frame = get_frame_id (frame); |
11293 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11294 | } |
c906108c | 11295 | else |
f6bc2008 | 11296 | { |
3a5c3e22 PA |
11297 | w->watchpoint_frame = null_frame_id; |
11298 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11299 | } |
c906108c | 11300 | |
d983da9c | 11301 | if (scope_breakpoint != NULL) |
c906108c | 11302 | { |
d983da9c DJ |
11303 | /* The scope breakpoint is related to the watchpoint. We will |
11304 | need to act on them together. */ | |
11305 | b->related_breakpoint = scope_breakpoint; | |
11306 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11307 | } |
d983da9c | 11308 | |
06a64a0b TT |
11309 | if (!just_location) |
11310 | value_free_to_mark (mark); | |
2d134ed3 | 11311 | |
492d29ea | 11312 | TRY |
a9634178 TJB |
11313 | { |
11314 | /* Finally update the new watchpoint. This creates the locations | |
11315 | that should be inserted. */ | |
3a5c3e22 | 11316 | update_watchpoint (w, 1); |
a9634178 | 11317 | } |
492d29ea | 11318 | CATCH (e, RETURN_MASK_ALL) |
a9634178 TJB |
11319 | { |
11320 | delete_breakpoint (b); | |
11321 | throw_exception (e); | |
11322 | } | |
492d29ea | 11323 | END_CATCH |
a9634178 | 11324 | |
3ea46bff | 11325 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11326 | do_cleanups (back_to); |
c906108c SS |
11327 | } |
11328 | ||
e09342b5 | 11329 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11330 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11331 | |
c906108c | 11332 | static int |
a9634178 | 11333 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11334 | { |
11335 | int found_memory_cnt = 0; | |
2e70b7b9 | 11336 | struct value *head = v; |
c906108c SS |
11337 | |
11338 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11339 | if (!can_use_hw_watchpoints) |
c906108c | 11340 | return 0; |
c5aa993b | 11341 | |
5c44784c JM |
11342 | /* Make sure that the value of the expression depends only upon |
11343 | memory contents, and values computed from them within GDB. If we | |
11344 | find any register references or function calls, we can't use a | |
11345 | hardware watchpoint. | |
11346 | ||
11347 | The idea here is that evaluating an expression generates a series | |
11348 | of values, one holding the value of every subexpression. (The | |
11349 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11350 | a*b+c.) GDB's values hold almost enough information to establish | |
11351 | the criteria given above --- they identify memory lvalues, | |
11352 | register lvalues, computed values, etcetera. So we can evaluate | |
11353 | the expression, and then scan the chain of values that leaves | |
11354 | behind to decide whether we can detect any possible change to the | |
11355 | expression's final value using only hardware watchpoints. | |
11356 | ||
11357 | However, I don't think that the values returned by inferior | |
11358 | function calls are special in any way. So this function may not | |
11359 | notice that an expression involving an inferior function call | |
11360 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11361 | for (; v; v = value_next (v)) |
c906108c | 11362 | { |
5c44784c | 11363 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11364 | { |
8464be76 DJ |
11365 | if (v != head && value_lazy (v)) |
11366 | /* A lazy memory lvalue in the chain is one that GDB never | |
11367 | needed to fetch; we either just used its address (e.g., | |
11368 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11369 | in `a,b'). This doesn't apply to HEAD; if that is | |
11370 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11371 | ; |
53a5351d | 11372 | else |
5c44784c JM |
11373 | { |
11374 | /* Ahh, memory we actually used! Check if we can cover | |
11375 | it with hardware watchpoints. */ | |
df407dfe | 11376 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11377 | |
11378 | /* We only watch structs and arrays if user asked for it | |
11379 | explicitly, never if they just happen to appear in a | |
11380 | middle of some value chain. */ | |
11381 | if (v == head | |
11382 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11383 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11384 | { | |
42ae5230 | 11385 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11386 | int len; |
11387 | int num_regs; | |
11388 | ||
a9634178 | 11389 | len = (target_exact_watchpoints |
e09342b5 TJB |
11390 | && is_scalar_type_recursive (vtype))? |
11391 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11392 | |
e09342b5 TJB |
11393 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11394 | if (!num_regs) | |
2e70b7b9 MS |
11395 | return 0; |
11396 | else | |
e09342b5 | 11397 | found_memory_cnt += num_regs; |
2e70b7b9 | 11398 | } |
5c44784c | 11399 | } |
c5aa993b | 11400 | } |
5086187c AC |
11401 | else if (VALUE_LVAL (v) != not_lval |
11402 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11403 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11404 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11405 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11406 | } |
11407 | ||
11408 | /* The expression itself looks suitable for using a hardware | |
11409 | watchpoint, but give the target machine a chance to reject it. */ | |
11410 | return found_memory_cnt; | |
11411 | } | |
11412 | ||
8b93c638 | 11413 | void |
84f4c1fe | 11414 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11415 | { |
84f4c1fe | 11416 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11417 | } |
11418 | ||
06a64a0b TT |
11419 | /* A helper function that looks for the "-location" argument and then |
11420 | calls watch_command_1. */ | |
11421 | ||
11422 | static void | |
11423 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11424 | { | |
11425 | int just_location = 0; | |
11426 | ||
11427 | if (arg | |
11428 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11429 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11430 | { | |
e9cafbcc | 11431 | arg = skip_spaces (arg); |
06a64a0b TT |
11432 | just_location = 1; |
11433 | } | |
11434 | ||
84f4c1fe | 11435 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11436 | } |
8926118c | 11437 | |
c5aa993b | 11438 | static void |
fba45db2 | 11439 | watch_command (char *arg, int from_tty) |
c906108c | 11440 | { |
06a64a0b | 11441 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11442 | } |
11443 | ||
8b93c638 | 11444 | void |
84f4c1fe | 11445 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11446 | { |
84f4c1fe | 11447 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11448 | } |
8926118c | 11449 | |
c5aa993b | 11450 | static void |
fba45db2 | 11451 | rwatch_command (char *arg, int from_tty) |
c906108c | 11452 | { |
06a64a0b | 11453 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11454 | } |
11455 | ||
8b93c638 | 11456 | void |
84f4c1fe | 11457 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11458 | { |
84f4c1fe | 11459 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11460 | } |
8926118c | 11461 | |
c5aa993b | 11462 | static void |
fba45db2 | 11463 | awatch_command (char *arg, int from_tty) |
c906108c | 11464 | { |
06a64a0b | 11465 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11466 | } |
c906108c | 11467 | \f |
c5aa993b | 11468 | |
43ff13b4 | 11469 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11470 | because it uses the mechanisms of breakpoints. */ |
11471 | ||
bfec99b2 PA |
11472 | struct until_break_command_continuation_args |
11473 | { | |
11474 | struct breakpoint *breakpoint; | |
11475 | struct breakpoint *breakpoint2; | |
186c406b | 11476 | int thread_num; |
bfec99b2 PA |
11477 | }; |
11478 | ||
43ff13b4 | 11479 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11480 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11481 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11482 | command. */ |
c2c6d25f | 11483 | static void |
fa4cd53f | 11484 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11485 | { |
bfec99b2 PA |
11486 | struct until_break_command_continuation_args *a = arg; |
11487 | ||
11488 | delete_breakpoint (a->breakpoint); | |
11489 | if (a->breakpoint2) | |
11490 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11491 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11492 | } |
11493 | ||
c906108c | 11494 | void |
ae66c1fc | 11495 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11496 | { |
11497 | struct symtabs_and_lines sals; | |
11498 | struct symtab_and_line sal; | |
8556afb4 PA |
11499 | struct frame_info *frame; |
11500 | struct gdbarch *frame_gdbarch; | |
11501 | struct frame_id stack_frame_id; | |
11502 | struct frame_id caller_frame_id; | |
c906108c | 11503 | struct breakpoint *breakpoint; |
f107f563 | 11504 | struct breakpoint *breakpoint2 = NULL; |
f00aae0f | 11505 | struct cleanup *old_chain, *cleanup; |
186c406b TT |
11506 | int thread; |
11507 | struct thread_info *tp; | |
f00aae0f | 11508 | struct event_location *location; |
c906108c | 11509 | |
70509625 | 11510 | clear_proceed_status (0); |
c906108c SS |
11511 | |
11512 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11513 | this function. */ |
c5aa993b | 11514 | |
f00aae0f KS |
11515 | location = string_to_event_location (&arg, current_language); |
11516 | cleanup = make_cleanup_delete_event_location (location); | |
11517 | ||
1bfeeb0f | 11518 | if (last_displayed_sal_is_valid ()) |
f00aae0f | 11519 | sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11520 | get_last_displayed_symtab (), |
f8eba3c6 | 11521 | get_last_displayed_line ()); |
c906108c | 11522 | else |
f00aae0f | 11523 | sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE, |
f8eba3c6 | 11524 | (struct symtab *) NULL, 0); |
c5aa993b | 11525 | |
c906108c | 11526 | if (sals.nelts != 1) |
8a3fe4f8 | 11527 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11528 | |
c906108c | 11529 | sal = sals.sals[0]; |
4a64f543 | 11530 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11531 | |
c906108c | 11532 | if (*arg) |
8a3fe4f8 | 11533 | error (_("Junk at end of arguments.")); |
c5aa993b | 11534 | |
c906108c | 11535 | resolve_sal_pc (&sal); |
c5aa993b | 11536 | |
186c406b TT |
11537 | tp = inferior_thread (); |
11538 | thread = tp->num; | |
11539 | ||
883bc8d1 PA |
11540 | old_chain = make_cleanup (null_cleanup, NULL); |
11541 | ||
8556afb4 PA |
11542 | /* Note linespec handling above invalidates the frame chain. |
11543 | Installing a breakpoint also invalidates the frame chain (as it | |
11544 | may need to switch threads), so do any frame handling before | |
11545 | that. */ | |
11546 | ||
11547 | frame = get_selected_frame (NULL); | |
11548 | frame_gdbarch = get_frame_arch (frame); | |
11549 | stack_frame_id = get_stack_frame_id (frame); | |
11550 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11551 | |
ae66c1fc EZ |
11552 | /* Keep within the current frame, or in frames called by the current |
11553 | one. */ | |
edb3359d | 11554 | |
883bc8d1 | 11555 | if (frame_id_p (caller_frame_id)) |
c906108c | 11556 | { |
883bc8d1 PA |
11557 | struct symtab_and_line sal2; |
11558 | ||
11559 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11560 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11561 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11562 | sal2, |
11563 | caller_frame_id, | |
f107f563 VP |
11564 | bp_until); |
11565 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11566 | |
883bc8d1 | 11567 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11568 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11569 | } |
c5aa993b | 11570 | |
c70a6932 JK |
11571 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11572 | frame = NULL; | |
11573 | ||
883bc8d1 PA |
11574 | if (anywhere) |
11575 | /* If the user told us to continue until a specified location, | |
11576 | we don't specify a frame at which we need to stop. */ | |
11577 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11578 | null_frame_id, bp_until); | |
11579 | else | |
11580 | /* Otherwise, specify the selected frame, because we want to stop | |
11581 | only at the very same frame. */ | |
11582 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11583 | stack_frame_id, bp_until); | |
11584 | make_cleanup_delete_breakpoint (breakpoint); | |
11585 | ||
64ce06e4 | 11586 | proceed (-1, GDB_SIGNAL_DEFAULT); |
f107f563 | 11587 | |
4a64f543 MS |
11588 | /* If we are running asynchronously, and proceed call above has |
11589 | actually managed to start the target, arrange for breakpoints to | |
11590 | be deleted when the target stops. Otherwise, we're already | |
11591 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11592 | |
8ea051c5 | 11593 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11594 | { |
bfec99b2 PA |
11595 | struct until_break_command_continuation_args *args; |
11596 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11597 | |
bfec99b2 PA |
11598 | args->breakpoint = breakpoint; |
11599 | args->breakpoint2 = breakpoint2; | |
186c406b | 11600 | args->thread_num = thread; |
f107f563 VP |
11601 | |
11602 | discard_cleanups (old_chain); | |
95e54da7 PA |
11603 | add_continuation (inferior_thread (), |
11604 | until_break_command_continuation, args, | |
604ead4a | 11605 | xfree); |
f107f563 VP |
11606 | } |
11607 | else | |
c5aa993b | 11608 | do_cleanups (old_chain); |
f00aae0f KS |
11609 | |
11610 | do_cleanups (cleanup); | |
c906108c | 11611 | } |
ae66c1fc | 11612 | |
c906108c SS |
11613 | /* This function attempts to parse an optional "if <cond>" clause |
11614 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11615 | |
c906108c SS |
11616 | Else, it returns a pointer to the condition string. (It does not |
11617 | attempt to evaluate the string against a particular block.) And, | |
11618 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11619 | if clause in the arg string. */ |
53a5351d | 11620 | |
916703c0 | 11621 | char * |
fba45db2 | 11622 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11623 | { |
c5aa993b JM |
11624 | char *cond_string; |
11625 | ||
11626 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11627 | return NULL; |
c5aa993b | 11628 | |
4a64f543 | 11629 | /* Skip the "if" keyword. */ |
c906108c | 11630 | (*arg) += 2; |
c5aa993b | 11631 | |
c906108c | 11632 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11633 | condition string. */ |
e9cafbcc | 11634 | *arg = skip_spaces (*arg); |
c906108c | 11635 | cond_string = *arg; |
c5aa993b | 11636 | |
4a64f543 MS |
11637 | /* Assume that the condition occupies the remainder of the arg |
11638 | string. */ | |
c906108c | 11639 | (*arg) += strlen (cond_string); |
c5aa993b | 11640 | |
c906108c SS |
11641 | return cond_string; |
11642 | } | |
c5aa993b | 11643 | |
c906108c SS |
11644 | /* Commands to deal with catching events, such as signals, exceptions, |
11645 | process start/exit, etc. */ | |
c5aa993b JM |
11646 | |
11647 | typedef enum | |
11648 | { | |
44feb3ce TT |
11649 | catch_fork_temporary, catch_vfork_temporary, |
11650 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11651 | } |
11652 | catch_fork_kind; | |
11653 | ||
c906108c | 11654 | static void |
cc59ec59 MS |
11655 | catch_fork_command_1 (char *arg, int from_tty, |
11656 | struct cmd_list_element *command) | |
c906108c | 11657 | { |
a6d9a66e | 11658 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11659 | char *cond_string = NULL; |
44feb3ce TT |
11660 | catch_fork_kind fork_kind; |
11661 | int tempflag; | |
11662 | ||
11663 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11664 | tempflag = (fork_kind == catch_fork_temporary | |
11665 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11666 | |
44feb3ce TT |
11667 | if (!arg) |
11668 | arg = ""; | |
e9cafbcc | 11669 | arg = skip_spaces (arg); |
c5aa993b | 11670 | |
c906108c | 11671 | /* The allowed syntax is: |
c5aa993b JM |
11672 | catch [v]fork |
11673 | catch [v]fork if <cond> | |
11674 | ||
4a64f543 | 11675 | First, check if there's an if clause. */ |
c906108c | 11676 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11677 | |
c906108c | 11678 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11679 | error (_("Junk at end of arguments.")); |
c5aa993b | 11680 | |
c906108c | 11681 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11682 | and enable reporting of such events. */ |
c5aa993b JM |
11683 | switch (fork_kind) |
11684 | { | |
44feb3ce TT |
11685 | case catch_fork_temporary: |
11686 | case catch_fork_permanent: | |
a6d9a66e | 11687 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11688 | &catch_fork_breakpoint_ops); |
c906108c | 11689 | break; |
44feb3ce TT |
11690 | case catch_vfork_temporary: |
11691 | case catch_vfork_permanent: | |
a6d9a66e | 11692 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11693 | &catch_vfork_breakpoint_ops); |
c906108c | 11694 | break; |
c5aa993b | 11695 | default: |
8a3fe4f8 | 11696 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11697 | break; |
c5aa993b | 11698 | } |
c906108c SS |
11699 | } |
11700 | ||
11701 | static void | |
cc59ec59 MS |
11702 | catch_exec_command_1 (char *arg, int from_tty, |
11703 | struct cmd_list_element *command) | |
c906108c | 11704 | { |
b4d90040 | 11705 | struct exec_catchpoint *c; |
a6d9a66e | 11706 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11707 | int tempflag; |
c5aa993b | 11708 | char *cond_string = NULL; |
c906108c | 11709 | |
44feb3ce TT |
11710 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11711 | ||
11712 | if (!arg) | |
11713 | arg = ""; | |
e9cafbcc | 11714 | arg = skip_spaces (arg); |
c906108c SS |
11715 | |
11716 | /* The allowed syntax is: | |
c5aa993b JM |
11717 | catch exec |
11718 | catch exec if <cond> | |
c906108c | 11719 | |
4a64f543 | 11720 | First, check if there's an if clause. */ |
c906108c SS |
11721 | cond_string = ep_parse_optional_if_clause (&arg); |
11722 | ||
11723 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11724 | error (_("Junk at end of arguments.")); |
c906108c | 11725 | |
b4d90040 PA |
11726 | c = XNEW (struct exec_catchpoint); |
11727 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11728 | &catch_exec_breakpoint_ops); | |
11729 | c->exec_pathname = NULL; | |
11730 | ||
3ea46bff | 11731 | install_breakpoint (0, &c->base, 1); |
c906108c | 11732 | } |
c5aa993b | 11733 | |
9ac4176b | 11734 | void |
28010a5d PA |
11735 | init_ada_exception_breakpoint (struct breakpoint *b, |
11736 | struct gdbarch *gdbarch, | |
11737 | struct symtab_and_line sal, | |
11738 | char *addr_string, | |
c0a91b2b | 11739 | const struct breakpoint_ops *ops, |
28010a5d | 11740 | int tempflag, |
349774ef | 11741 | int enabled, |
28010a5d | 11742 | int from_tty) |
f7f9143b | 11743 | { |
f7f9143b JB |
11744 | if (from_tty) |
11745 | { | |
5af949e3 UW |
11746 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11747 | if (!loc_gdbarch) | |
11748 | loc_gdbarch = gdbarch; | |
11749 | ||
6c95b8df PA |
11750 | describe_other_breakpoints (loc_gdbarch, |
11751 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11752 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11753 | version for exception catchpoints, because two catchpoints | |
11754 | used for different exception names will use the same address. | |
11755 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11756 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11757 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11758 | the user what type of catchpoint it is. The above is good |
11759 | enough for now, though. */ | |
11760 | } | |
11761 | ||
28010a5d | 11762 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11763 | |
349774ef | 11764 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11765 | b->disposition = tempflag ? disp_del : disp_donttouch; |
f00aae0f KS |
11766 | b->location = string_to_event_location (&addr_string, |
11767 | language_def (language_ada)); | |
f7f9143b | 11768 | b->language = language_ada; |
f7f9143b JB |
11769 | } |
11770 | ||
c906108c | 11771 | static void |
fba45db2 | 11772 | catch_command (char *arg, int from_tty) |
c906108c | 11773 | { |
44feb3ce | 11774 | error (_("Catch requires an event name.")); |
c906108c SS |
11775 | } |
11776 | \f | |
11777 | ||
11778 | static void | |
fba45db2 | 11779 | tcatch_command (char *arg, int from_tty) |
c906108c | 11780 | { |
44feb3ce | 11781 | error (_("Catch requires an event name.")); |
c906108c SS |
11782 | } |
11783 | ||
8a2c437b TT |
11784 | /* A qsort comparison function that sorts breakpoints in order. */ |
11785 | ||
11786 | static int | |
11787 | compare_breakpoints (const void *a, const void *b) | |
11788 | { | |
11789 | const breakpoint_p *ba = a; | |
11790 | uintptr_t ua = (uintptr_t) *ba; | |
11791 | const breakpoint_p *bb = b; | |
11792 | uintptr_t ub = (uintptr_t) *bb; | |
11793 | ||
11794 | if ((*ba)->number < (*bb)->number) | |
11795 | return -1; | |
11796 | else if ((*ba)->number > (*bb)->number) | |
11797 | return 1; | |
11798 | ||
11799 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11800 | the number 0. */ | |
11801 | if (ua < ub) | |
11802 | return -1; | |
94b0e70d | 11803 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11804 | } |
11805 | ||
80f8a6eb | 11806 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11807 | |
11808 | static void | |
fba45db2 | 11809 | clear_command (char *arg, int from_tty) |
c906108c | 11810 | { |
8a2c437b | 11811 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11812 | VEC(breakpoint_p) *found = 0; |
11813 | int ix; | |
c906108c SS |
11814 | int default_match; |
11815 | struct symtabs_and_lines sals; | |
11816 | struct symtab_and_line sal; | |
c906108c | 11817 | int i; |
8a2c437b | 11818 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11819 | |
11820 | if (arg) | |
11821 | { | |
39cf75f7 DE |
11822 | sals = decode_line_with_current_source (arg, |
11823 | (DECODE_LINE_FUNFIRSTLINE | |
11824 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11825 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11826 | default_match = 0; |
11827 | } | |
11828 | else | |
11829 | { | |
c5aa993b | 11830 | sals.sals = (struct symtab_and_line *) |
c906108c | 11831 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11832 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11833 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11834 | |
11835 | /* Set sal's line, symtab, pc, and pspace to the values | |
11836 | corresponding to the last call to print_frame_info. If the | |
11837 | codepoint is not valid, this will set all the fields to 0. */ | |
11838 | get_last_displayed_sal (&sal); | |
c906108c | 11839 | if (sal.symtab == 0) |
8a3fe4f8 | 11840 | error (_("No source file specified.")); |
c906108c SS |
11841 | |
11842 | sals.sals[0] = sal; | |
11843 | sals.nelts = 1; | |
11844 | ||
11845 | default_match = 1; | |
11846 | } | |
11847 | ||
4a64f543 MS |
11848 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11849 | seems, because all existing breakpoints typically have both | |
11850 | file/line and pc set. So, if clear is given file/line, we can | |
11851 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11852 | |
11853 | We only support clearing given the address explicitly | |
11854 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11855 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11856 | due to optimization, all in one block. |
4a64f543 MS |
11857 | |
11858 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11859 | PC corresponding to the same file:line, the breakpoint won't |
11860 | be cleared. We probably can still clear the breakpoint, but | |
11861 | since the other PC value is never presented to user, user | |
11862 | can only find it by guessing, and it does not seem important | |
11863 | to support that. */ | |
11864 | ||
4a64f543 MS |
11865 | /* For each line spec given, delete bps which correspond to it. Do |
11866 | it in two passes, solely to preserve the current behavior that | |
11867 | from_tty is forced true if we delete more than one | |
11868 | breakpoint. */ | |
c906108c | 11869 | |
80f8a6eb | 11870 | found = NULL; |
8a2c437b | 11871 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11872 | for (i = 0; i < sals.nelts; i++) |
11873 | { | |
05cba821 JK |
11874 | const char *sal_fullname; |
11875 | ||
c906108c | 11876 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11877 | If line given (pc == 0), clear all bpts on specified line. |
11878 | If defaulting, clear all bpts on default line | |
c906108c | 11879 | or at default pc. |
c5aa993b JM |
11880 | |
11881 | defaulting sal.pc != 0 tests to do | |
11882 | ||
11883 | 0 1 pc | |
11884 | 1 1 pc _and_ line | |
11885 | 0 0 line | |
11886 | 1 0 <can't happen> */ | |
c906108c SS |
11887 | |
11888 | sal = sals.sals[i]; | |
05cba821 JK |
11889 | sal_fullname = (sal.symtab == NULL |
11890 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11891 | |
4a64f543 | 11892 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11893 | ALL_BREAKPOINTS (b) |
c5aa993b | 11894 | { |
0d381245 | 11895 | int match = 0; |
4a64f543 | 11896 | /* Are we going to delete b? */ |
cc60f2e3 | 11897 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11898 | { |
11899 | struct bp_location *loc = b->loc; | |
11900 | for (; loc; loc = loc->next) | |
11901 | { | |
f8eba3c6 TT |
11902 | /* If the user specified file:line, don't allow a PC |
11903 | match. This matches historical gdb behavior. */ | |
11904 | int pc_match = (!sal.explicit_line | |
11905 | && sal.pc | |
11906 | && (loc->pspace == sal.pspace) | |
11907 | && (loc->address == sal.pc) | |
11908 | && (!section_is_overlay (loc->section) | |
11909 | || loc->section == sal.section)); | |
4aac40c8 TT |
11910 | int line_match = 0; |
11911 | ||
11912 | if ((default_match || sal.explicit_line) | |
2f202fde | 11913 | && loc->symtab != NULL |
05cba821 | 11914 | && sal_fullname != NULL |
4aac40c8 | 11915 | && sal.pspace == loc->pspace |
05cba821 JK |
11916 | && loc->line_number == sal.line |
11917 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11918 | sal_fullname) == 0) | |
11919 | line_match = 1; | |
4aac40c8 | 11920 | |
0d381245 VP |
11921 | if (pc_match || line_match) |
11922 | { | |
11923 | match = 1; | |
11924 | break; | |
11925 | } | |
11926 | } | |
11927 | } | |
11928 | ||
11929 | if (match) | |
d6e956e5 | 11930 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11931 | } |
80f8a6eb | 11932 | } |
8a2c437b | 11933 | |
80f8a6eb | 11934 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11935 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11936 | { |
11937 | if (arg) | |
8a3fe4f8 | 11938 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11939 | else |
8a3fe4f8 | 11940 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11941 | } |
c906108c | 11942 | |
8a2c437b TT |
11943 | /* Remove duplicates from the vec. */ |
11944 | qsort (VEC_address (breakpoint_p, found), | |
11945 | VEC_length (breakpoint_p, found), | |
11946 | sizeof (breakpoint_p), | |
11947 | compare_breakpoints); | |
11948 | prev = VEC_index (breakpoint_p, found, 0); | |
11949 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11950 | { | |
11951 | if (b == prev) | |
11952 | { | |
11953 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11954 | --ix; | |
11955 | } | |
11956 | } | |
11957 | ||
d6e956e5 | 11958 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11959 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11960 | if (from_tty) |
a3f17187 | 11961 | { |
d6e956e5 | 11962 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11963 | printf_unfiltered (_("Deleted breakpoint ")); |
11964 | else | |
11965 | printf_unfiltered (_("Deleted breakpoints ")); | |
11966 | } | |
d6e956e5 VP |
11967 | |
11968 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11969 | { |
c5aa993b | 11970 | if (from_tty) |
d6e956e5 VP |
11971 | printf_unfiltered ("%d ", b->number); |
11972 | delete_breakpoint (b); | |
c906108c | 11973 | } |
80f8a6eb MS |
11974 | if (from_tty) |
11975 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11976 | |
11977 | do_cleanups (cleanups); | |
c906108c SS |
11978 | } |
11979 | \f | |
11980 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11981 | all breakpoints that are marked for deletion, whether hit or not. | |
11982 | This is called after any breakpoint is hit, or after errors. */ | |
11983 | ||
11984 | void | |
fba45db2 | 11985 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11986 | { |
35df4500 | 11987 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11988 | |
11989 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11990 | if (bs->breakpoint_at |
11991 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11992 | && bs->stop) |
f431efe5 | 11993 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11994 | |
35df4500 | 11995 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11996 | { |
b5de0fa7 | 11997 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11998 | delete_breakpoint (b); |
11999 | } | |
c906108c SS |
12000 | } |
12001 | ||
4a64f543 MS |
12002 | /* A comparison function for bp_location AP and BP being interfaced to |
12003 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
12004 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 12005 | secondarily by ordering first permanent elements and |
4a64f543 | 12006 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 12007 | qsort being an unstable algorithm. */ |
876fa593 JK |
12008 | |
12009 | static int | |
494cfb0f | 12010 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 12011 | { |
494cfb0f JK |
12012 | struct bp_location *a = *(void **) ap; |
12013 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
12014 | |
12015 | if (a->address != b->address) | |
12016 | return (a->address > b->address) - (a->address < b->address); | |
12017 | ||
dea2aa5f LM |
12018 | /* Sort locations at the same address by their pspace number, keeping |
12019 | locations of the same inferior (in a multi-inferior environment) | |
12020 | grouped. */ | |
12021 | ||
12022 | if (a->pspace->num != b->pspace->num) | |
12023 | return ((a->pspace->num > b->pspace->num) | |
12024 | - (a->pspace->num < b->pspace->num)); | |
12025 | ||
876fa593 | 12026 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
12027 | if (a->permanent != b->permanent) |
12028 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 12029 | |
c56a97f9 JK |
12030 | /* Make the internal GDB representation stable across GDB runs |
12031 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12032 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12033 | |
12034 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12035 | return ((a->owner->number > b->owner->number) |
12036 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12037 | |
12038 | return (a > b) - (a < b); | |
12039 | } | |
12040 | ||
876fa593 | 12041 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12042 | bp_location_shadow_len_after_address_max according to the current |
12043 | content of the bp_location array. */ | |
f7545552 TT |
12044 | |
12045 | static void | |
876fa593 | 12046 | bp_location_target_extensions_update (void) |
f7545552 | 12047 | { |
876fa593 JK |
12048 | struct bp_location *bl, **blp_tmp; |
12049 | ||
12050 | bp_location_placed_address_before_address_max = 0; | |
12051 | bp_location_shadow_len_after_address_max = 0; | |
12052 | ||
12053 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12054 | { | |
12055 | CORE_ADDR start, end, addr; | |
12056 | ||
12057 | if (!bp_location_has_shadow (bl)) | |
12058 | continue; | |
12059 | ||
12060 | start = bl->target_info.placed_address; | |
12061 | end = start + bl->target_info.shadow_len; | |
12062 | ||
12063 | gdb_assert (bl->address >= start); | |
12064 | addr = bl->address - start; | |
12065 | if (addr > bp_location_placed_address_before_address_max) | |
12066 | bp_location_placed_address_before_address_max = addr; | |
12067 | ||
12068 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12069 | ||
12070 | gdb_assert (bl->address < end); | |
12071 | addr = end - bl->address; | |
12072 | if (addr > bp_location_shadow_len_after_address_max) | |
12073 | bp_location_shadow_len_after_address_max = addr; | |
12074 | } | |
f7545552 TT |
12075 | } |
12076 | ||
1e4d1764 YQ |
12077 | /* Download tracepoint locations if they haven't been. */ |
12078 | ||
12079 | static void | |
12080 | download_tracepoint_locations (void) | |
12081 | { | |
7ed2c994 | 12082 | struct breakpoint *b; |
1e4d1764 YQ |
12083 | struct cleanup *old_chain; |
12084 | ||
12085 | if (!target_can_download_tracepoint ()) | |
12086 | return; | |
12087 | ||
12088 | old_chain = save_current_space_and_thread (); | |
12089 | ||
7ed2c994 | 12090 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12091 | { |
7ed2c994 | 12092 | struct bp_location *bl; |
1e4d1764 | 12093 | struct tracepoint *t; |
f2a8bc8a | 12094 | int bp_location_downloaded = 0; |
1e4d1764 | 12095 | |
7ed2c994 | 12096 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12097 | ? !may_insert_fast_tracepoints |
12098 | : !may_insert_tracepoints)) | |
12099 | continue; | |
12100 | ||
7ed2c994 YQ |
12101 | for (bl = b->loc; bl; bl = bl->next) |
12102 | { | |
12103 | /* In tracepoint, locations are _never_ duplicated, so | |
12104 | should_be_inserted is equivalent to | |
12105 | unduplicated_should_be_inserted. */ | |
12106 | if (!should_be_inserted (bl) || bl->inserted) | |
12107 | continue; | |
1e4d1764 | 12108 | |
7ed2c994 | 12109 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12110 | |
7ed2c994 | 12111 | target_download_tracepoint (bl); |
1e4d1764 | 12112 | |
7ed2c994 | 12113 | bl->inserted = 1; |
f2a8bc8a | 12114 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12115 | } |
12116 | t = (struct tracepoint *) b; | |
12117 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12118 | if (bp_location_downloaded) |
12119 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12120 | } |
12121 | ||
12122 | do_cleanups (old_chain); | |
12123 | } | |
12124 | ||
934709f0 PW |
12125 | /* Swap the insertion/duplication state between two locations. */ |
12126 | ||
12127 | static void | |
12128 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12129 | { | |
12130 | const int left_inserted = left->inserted; | |
12131 | const int left_duplicate = left->duplicate; | |
b775012e | 12132 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12133 | const struct bp_target_info left_target_info = left->target_info; |
12134 | ||
1e4d1764 YQ |
12135 | /* Locations of tracepoints can never be duplicated. */ |
12136 | if (is_tracepoint (left->owner)) | |
12137 | gdb_assert (!left->duplicate); | |
12138 | if (is_tracepoint (right->owner)) | |
12139 | gdb_assert (!right->duplicate); | |
12140 | ||
934709f0 PW |
12141 | left->inserted = right->inserted; |
12142 | left->duplicate = right->duplicate; | |
b775012e | 12143 | left->needs_update = right->needs_update; |
934709f0 PW |
12144 | left->target_info = right->target_info; |
12145 | right->inserted = left_inserted; | |
12146 | right->duplicate = left_duplicate; | |
b775012e | 12147 | right->needs_update = left_needs_update; |
934709f0 PW |
12148 | right->target_info = left_target_info; |
12149 | } | |
12150 | ||
b775012e LM |
12151 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12152 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12153 | conditions on the target's side. Such conditions need to be updated on | |
12154 | the target. */ | |
12155 | ||
12156 | static void | |
12157 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12158 | { | |
12159 | struct bp_location **locp = NULL, **loc2p; | |
12160 | struct bp_location *loc; | |
12161 | CORE_ADDR address = 0; | |
12162 | int pspace_num; | |
12163 | ||
12164 | address = bl->address; | |
12165 | pspace_num = bl->pspace->num; | |
12166 | ||
12167 | /* This is only meaningful if the target is | |
12168 | evaluating conditions and if the user has | |
12169 | opted for condition evaluation on the target's | |
12170 | side. */ | |
12171 | if (gdb_evaluates_breakpoint_condition_p () | |
12172 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12173 | return; | |
12174 | ||
12175 | /* Flag all breakpoint locations with this address and | |
12176 | the same program space as the location | |
12177 | as "its condition has changed". We need to | |
12178 | update the conditions on the target's side. */ | |
12179 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12180 | { | |
12181 | loc = *loc2p; | |
12182 | ||
12183 | if (!is_breakpoint (loc->owner) | |
12184 | || pspace_num != loc->pspace->num) | |
12185 | continue; | |
12186 | ||
12187 | /* Flag the location appropriately. We use a different state to | |
12188 | let everyone know that we already updated the set of locations | |
12189 | with addr bl->address and program space bl->pspace. This is so | |
12190 | we don't have to keep calling these functions just to mark locations | |
12191 | that have already been marked. */ | |
12192 | loc->condition_changed = condition_updated; | |
12193 | ||
12194 | /* Free the agent expression bytecode as well. We will compute | |
12195 | it later on. */ | |
12196 | if (loc->cond_bytecode) | |
12197 | { | |
12198 | free_agent_expr (loc->cond_bytecode); | |
12199 | loc->cond_bytecode = NULL; | |
12200 | } | |
12201 | } | |
12202 | } | |
44702360 PA |
12203 | /* Called whether new breakpoints are created, or existing breakpoints |
12204 | deleted, to update the global location list and recompute which | |
12205 | locations are duplicate of which. | |
b775012e | 12206 | |
04086b45 PA |
12207 | The INSERT_MODE flag determines whether locations may not, may, or |
12208 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
12209 | info. */ | |
b60e7edf | 12210 | |
0d381245 | 12211 | static void |
44702360 | 12212 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 12213 | { |
74960c60 | 12214 | struct breakpoint *b; |
876fa593 | 12215 | struct bp_location **locp, *loc; |
f7545552 | 12216 | struct cleanup *cleanups; |
b775012e LM |
12217 | /* Last breakpoint location address that was marked for update. */ |
12218 | CORE_ADDR last_addr = 0; | |
12219 | /* Last breakpoint location program space that was marked for update. */ | |
12220 | int last_pspace_num = -1; | |
f7545552 | 12221 | |
2d134ed3 PA |
12222 | /* Used in the duplicates detection below. When iterating over all |
12223 | bp_locations, points to the first bp_location of a given address. | |
12224 | Breakpoints and watchpoints of different types are never | |
12225 | duplicates of each other. Keep one pointer for each type of | |
12226 | breakpoint/watchpoint, so we only need to loop over all locations | |
12227 | once. */ | |
12228 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12229 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12230 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12231 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12232 | |
4a64f543 MS |
12233 | /* Saved former bp_location array which we compare against the newly |
12234 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12235 | struct bp_location **old_location, **old_locp; |
12236 | unsigned old_location_count; | |
12237 | ||
12238 | old_location = bp_location; | |
12239 | old_location_count = bp_location_count; | |
12240 | bp_location = NULL; | |
12241 | bp_location_count = 0; | |
12242 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12243 | |
74960c60 | 12244 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12245 | for (loc = b->loc; loc; loc = loc->next) |
12246 | bp_location_count++; | |
12247 | ||
12248 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12249 | locp = bp_location; | |
12250 | ALL_BREAKPOINTS (b) | |
12251 | for (loc = b->loc; loc; loc = loc->next) | |
12252 | *locp++ = loc; | |
12253 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12254 | bp_location_compare); |
876fa593 JK |
12255 | |
12256 | bp_location_target_extensions_update (); | |
74960c60 | 12257 | |
4a64f543 MS |
12258 | /* Identify bp_location instances that are no longer present in the |
12259 | new list, and therefore should be freed. Note that it's not | |
12260 | necessary that those locations should be removed from inferior -- | |
12261 | if there's another location at the same address (previously | |
12262 | marked as duplicate), we don't need to remove/insert the | |
12263 | location. | |
876fa593 | 12264 | |
4a64f543 MS |
12265 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12266 | and former bp_location array state respectively. */ | |
876fa593 JK |
12267 | |
12268 | locp = bp_location; | |
12269 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12270 | old_locp++) | |
74960c60 | 12271 | { |
876fa593 | 12272 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12273 | struct bp_location **loc2p; |
876fa593 | 12274 | |
e5dd4106 | 12275 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12276 | not, we have to free it. */ |
c7d46a38 | 12277 | int found_object = 0; |
20874c92 VP |
12278 | /* Tells if the location should remain inserted in the target. */ |
12279 | int keep_in_target = 0; | |
12280 | int removed = 0; | |
876fa593 | 12281 | |
4a64f543 MS |
12282 | /* Skip LOCP entries which will definitely never be needed. |
12283 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12284 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12285 | && (*locp)->address < old_loc->address) |
876fa593 | 12286 | locp++; |
c7d46a38 PA |
12287 | |
12288 | for (loc2p = locp; | |
12289 | (loc2p < bp_location + bp_location_count | |
12290 | && (*loc2p)->address == old_loc->address); | |
12291 | loc2p++) | |
12292 | { | |
b775012e LM |
12293 | /* Check if this is a new/duplicated location or a duplicated |
12294 | location that had its condition modified. If so, we want to send | |
12295 | its condition to the target if evaluation of conditions is taking | |
12296 | place there. */ | |
12297 | if ((*loc2p)->condition_changed == condition_modified | |
12298 | && (last_addr != old_loc->address | |
12299 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12300 | { |
b775012e LM |
12301 | force_breakpoint_reinsertion (*loc2p); |
12302 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12303 | } |
b775012e LM |
12304 | |
12305 | if (*loc2p == old_loc) | |
12306 | found_object = 1; | |
c7d46a38 | 12307 | } |
74960c60 | 12308 | |
b775012e LM |
12309 | /* We have already handled this address, update it so that we don't |
12310 | have to go through updates again. */ | |
12311 | last_addr = old_loc->address; | |
12312 | ||
12313 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12314 | if (!found_object) | |
12315 | force_breakpoint_reinsertion (old_loc); | |
12316 | ||
4a64f543 MS |
12317 | /* If this location is no longer present, and inserted, look if |
12318 | there's maybe a new location at the same address. If so, | |
12319 | mark that one inserted, and don't remove this one. This is | |
12320 | needed so that we don't have a time window where a breakpoint | |
12321 | at certain location is not inserted. */ | |
74960c60 | 12322 | |
876fa593 | 12323 | if (old_loc->inserted) |
0d381245 | 12324 | { |
4a64f543 MS |
12325 | /* If the location is inserted now, we might have to remove |
12326 | it. */ | |
74960c60 | 12327 | |
876fa593 | 12328 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12329 | { |
4a64f543 MS |
12330 | /* The location is still present in the location list, |
12331 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12332 | keep_in_target = 1; |
74960c60 VP |
12333 | } |
12334 | else | |
12335 | { | |
b775012e LM |
12336 | /* This location still exists, but it won't be kept in the |
12337 | target since it may have been disabled. We proceed to | |
12338 | remove its target-side condition. */ | |
12339 | ||
4a64f543 MS |
12340 | /* The location is either no longer present, or got |
12341 | disabled. See if there's another location at the | |
12342 | same address, in which case we don't need to remove | |
12343 | this one from the target. */ | |
876fa593 | 12344 | |
2bdf28a0 | 12345 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12346 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12347 | { | |
876fa593 | 12348 | for (loc2p = locp; |
c7d46a38 PA |
12349 | (loc2p < bp_location + bp_location_count |
12350 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12351 | loc2p++) |
12352 | { | |
12353 | struct bp_location *loc2 = *loc2p; | |
12354 | ||
2d134ed3 | 12355 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12356 | { |
85d721b8 PA |
12357 | /* Read watchpoint locations are switched to |
12358 | access watchpoints, if the former are not | |
12359 | supported, but the latter are. */ | |
12360 | if (is_hardware_watchpoint (old_loc->owner)) | |
12361 | { | |
12362 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12363 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12364 | } | |
12365 | ||
934709f0 PW |
12366 | /* loc2 is a duplicated location. We need to check |
12367 | if it should be inserted in case it will be | |
12368 | unduplicated. */ | |
12369 | if (loc2 != old_loc | |
12370 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12371 | { |
934709f0 | 12372 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12373 | keep_in_target = 1; |
12374 | break; | |
12375 | } | |
876fa593 JK |
12376 | } |
12377 | } | |
12378 | } | |
74960c60 VP |
12379 | } |
12380 | ||
20874c92 VP |
12381 | if (!keep_in_target) |
12382 | { | |
876fa593 | 12383 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12384 | { |
4a64f543 MS |
12385 | /* This is just about all we can do. We could keep |
12386 | this location on the global list, and try to | |
12387 | remove it next time, but there's no particular | |
12388 | reason why we will succeed next time. | |
20874c92 | 12389 | |
4a64f543 MS |
12390 | Note that at this point, old_loc->owner is still |
12391 | valid, as delete_breakpoint frees the breakpoint | |
12392 | only after calling us. */ | |
3e43a32a MS |
12393 | printf_filtered (_("warning: Error removing " |
12394 | "breakpoint %d\n"), | |
876fa593 | 12395 | old_loc->owner->number); |
20874c92 VP |
12396 | } |
12397 | removed = 1; | |
12398 | } | |
0d381245 | 12399 | } |
74960c60 VP |
12400 | |
12401 | if (!found_object) | |
1c5cfe86 | 12402 | { |
fbea99ea | 12403 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12404 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12405 | { |
db82e815 PA |
12406 | /* This location was removed from the target. In |
12407 | non-stop mode, a race condition is possible where | |
12408 | we've removed a breakpoint, but stop events for that | |
12409 | breakpoint are already queued and will arrive later. | |
12410 | We apply an heuristic to be able to distinguish such | |
12411 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12412 | breakpoint location for a bit, and will retire it | |
12413 | after we see some number of events. The theory here | |
12414 | is that reporting of events should, "on the average", | |
12415 | be fair, so after a while we'll see events from all | |
12416 | threads that have anything of interest, and no longer | |
12417 | need to keep this breakpoint location around. We | |
12418 | don't hold locations forever so to reduce chances of | |
12419 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12420 | SIGTRAP. | |
12421 | ||
12422 | The heuristic failing can be disastrous on | |
12423 | decr_pc_after_break targets. | |
12424 | ||
12425 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12426 | if we fail to recognize a late breakpoint SIGTRAP, | |
12427 | because events_till_retirement has reached 0 too | |
12428 | soon, we'll fail to do the PC adjustment, and report | |
12429 | a random SIGTRAP to the user. When the user resumes | |
12430 | the inferior, it will most likely immediately crash | |
2dec564e | 12431 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12432 | corrupted, because of being resumed e.g., in the |
12433 | middle of a multi-byte instruction, or skipped a | |
12434 | one-byte instruction. This was actually seen happen | |
12435 | on native x86-linux, and should be less rare on | |
12436 | targets that do not support new thread events, like | |
12437 | remote, due to the heuristic depending on | |
12438 | thread_count. | |
12439 | ||
12440 | Mistaking a random SIGTRAP for a breakpoint trap | |
12441 | causes similar symptoms (PC adjustment applied when | |
12442 | it shouldn't), but then again, playing with SIGTRAPs | |
12443 | behind the debugger's back is asking for trouble. | |
12444 | ||
12445 | Since hardware watchpoint traps are always | |
12446 | distinguishable from other traps, so we don't need to | |
12447 | apply keep hardware watchpoint moribund locations | |
12448 | around. We simply always ignore hardware watchpoint | |
12449 | traps we can no longer explain. */ | |
12450 | ||
876fa593 JK |
12451 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12452 | old_loc->owner = NULL; | |
20874c92 | 12453 | |
876fa593 | 12454 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12455 | } |
12456 | else | |
f431efe5 PA |
12457 | { |
12458 | old_loc->owner = NULL; | |
12459 | decref_bp_location (&old_loc); | |
12460 | } | |
20874c92 | 12461 | } |
74960c60 | 12462 | } |
1c5cfe86 | 12463 | |
348d480f PA |
12464 | /* Rescan breakpoints at the same address and section, marking the |
12465 | first one as "first" and any others as "duplicates". This is so | |
12466 | that the bpt instruction is only inserted once. If we have a | |
12467 | permanent breakpoint at the same place as BPT, make that one the | |
12468 | official one, and the rest as duplicates. Permanent breakpoints | |
12469 | are sorted first for the same address. | |
12470 | ||
12471 | Do the same for hardware watchpoints, but also considering the | |
12472 | watchpoint's type (regular/access/read) and length. */ | |
12473 | ||
12474 | bp_loc_first = NULL; | |
12475 | wp_loc_first = NULL; | |
12476 | awp_loc_first = NULL; | |
12477 | rwp_loc_first = NULL; | |
12478 | ALL_BP_LOCATIONS (loc, locp) | |
12479 | { | |
12480 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12481 | non-NULL. */ | |
348d480f | 12482 | struct bp_location **loc_first_p; |
d3fbdd86 | 12483 | b = loc->owner; |
348d480f | 12484 | |
6f380991 | 12485 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12486 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12487 | /* Don't detect duplicate for tracepoint locations because they are |
12488 | never duplicated. See the comments in field `duplicate' of | |
12489 | `struct bp_location'. */ | |
348d480f | 12490 | || is_tracepoint (b)) |
b775012e LM |
12491 | { |
12492 | /* Clear the condition modification flag. */ | |
12493 | loc->condition_changed = condition_unchanged; | |
12494 | continue; | |
12495 | } | |
348d480f | 12496 | |
348d480f PA |
12497 | if (b->type == bp_hardware_watchpoint) |
12498 | loc_first_p = &wp_loc_first; | |
12499 | else if (b->type == bp_read_watchpoint) | |
12500 | loc_first_p = &rwp_loc_first; | |
12501 | else if (b->type == bp_access_watchpoint) | |
12502 | loc_first_p = &awp_loc_first; | |
12503 | else | |
12504 | loc_first_p = &bp_loc_first; | |
12505 | ||
12506 | if (*loc_first_p == NULL | |
12507 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12508 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12509 | { | |
12510 | *loc_first_p = loc; | |
12511 | loc->duplicate = 0; | |
b775012e LM |
12512 | |
12513 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12514 | { | |
12515 | loc->needs_update = 1; | |
12516 | /* Clear the condition modification flag. */ | |
12517 | loc->condition_changed = condition_unchanged; | |
12518 | } | |
348d480f PA |
12519 | continue; |
12520 | } | |
12521 | ||
934709f0 PW |
12522 | |
12523 | /* This and the above ensure the invariant that the first location | |
12524 | is not duplicated, and is the inserted one. | |
12525 | All following are marked as duplicated, and are not inserted. */ | |
12526 | if (loc->inserted) | |
12527 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12528 | loc->duplicate = 1; |
12529 | ||
b775012e LM |
12530 | /* Clear the condition modification flag. */ |
12531 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12532 | } |
12533 | ||
a25a5a45 | 12534 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12535 | { |
04086b45 | 12536 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12537 | insert_breakpoint_locations (); |
12538 | else | |
12539 | { | |
44702360 PA |
12540 | /* Even though the caller told us to not insert new |
12541 | locations, we may still need to update conditions on the | |
12542 | target's side of breakpoints that were already inserted | |
12543 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12544 | only update conditions for locations that are marked |
12545 | "needs_update". */ | |
12546 | update_inserted_breakpoint_locations (); | |
12547 | } | |
12548 | } | |
348d480f | 12549 | |
04086b45 | 12550 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 YQ |
12551 | download_tracepoint_locations (); |
12552 | ||
348d480f PA |
12553 | do_cleanups (cleanups); |
12554 | } | |
12555 | ||
12556 | void | |
12557 | breakpoint_retire_moribund (void) | |
12558 | { | |
12559 | struct bp_location *loc; | |
12560 | int ix; | |
12561 | ||
12562 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12563 | if (--(loc->events_till_retirement) == 0) | |
12564 | { | |
12565 | decref_bp_location (&loc); | |
12566 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12567 | --ix; | |
12568 | } | |
12569 | } | |
12570 | ||
12571 | static void | |
44702360 | 12572 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12573 | { |
348d480f | 12574 | |
492d29ea PA |
12575 | TRY |
12576 | { | |
12577 | update_global_location_list (insert_mode); | |
12578 | } | |
12579 | CATCH (e, RETURN_MASK_ERROR) | |
12580 | { | |
12581 | } | |
12582 | END_CATCH | |
348d480f PA |
12583 | } |
12584 | ||
12585 | /* Clear BKP from a BPS. */ | |
12586 | ||
12587 | static void | |
12588 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12589 | { | |
12590 | bpstat bs; | |
12591 | ||
12592 | for (bs = bps; bs; bs = bs->next) | |
12593 | if (bs->breakpoint_at == bpt) | |
12594 | { | |
12595 | bs->breakpoint_at = NULL; | |
12596 | bs->old_val = NULL; | |
12597 | /* bs->commands will be freed later. */ | |
12598 | } | |
12599 | } | |
12600 | ||
12601 | /* Callback for iterate_over_threads. */ | |
12602 | static int | |
12603 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12604 | { | |
12605 | struct breakpoint *bpt = data; | |
12606 | ||
12607 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12608 | return 0; | |
12609 | } | |
12610 | ||
12611 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12612 | callbacks. */ | |
12613 | ||
12614 | static void | |
12615 | say_where (struct breakpoint *b) | |
12616 | { | |
12617 | struct value_print_options opts; | |
12618 | ||
12619 | get_user_print_options (&opts); | |
12620 | ||
12621 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12622 | single string. */ | |
12623 | if (b->loc == NULL) | |
12624 | { | |
f00aae0f KS |
12625 | /* For pending locations, the output differs slightly based |
12626 | on b->extra_string. If this is non-NULL, it contains either | |
12627 | a condition or dprintf arguments. */ | |
12628 | if (b->extra_string == NULL) | |
12629 | { | |
12630 | printf_filtered (_(" (%s) pending."), | |
12631 | event_location_to_string (b->location)); | |
12632 | } | |
12633 | else if (b->type == bp_dprintf) | |
12634 | { | |
12635 | printf_filtered (_(" (%s,%s) pending."), | |
12636 | event_location_to_string (b->location), | |
12637 | b->extra_string); | |
12638 | } | |
12639 | else | |
12640 | { | |
12641 | printf_filtered (_(" (%s %s) pending."), | |
12642 | event_location_to_string (b->location), | |
12643 | b->extra_string); | |
12644 | } | |
348d480f PA |
12645 | } |
12646 | else | |
12647 | { | |
2f202fde | 12648 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12649 | { |
12650 | printf_filtered (" at "); | |
12651 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12652 | gdb_stdout); | |
12653 | } | |
2f202fde | 12654 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12655 | { |
12656 | /* If there is a single location, we can print the location | |
12657 | more nicely. */ | |
12658 | if (b->loc->next == NULL) | |
12659 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12660 | symtab_to_filename_for_display (b->loc->symtab), |
12661 | b->loc->line_number); | |
f8eba3c6 TT |
12662 | else |
12663 | /* This is not ideal, but each location may have a | |
12664 | different file name, and this at least reflects the | |
12665 | real situation somewhat. */ | |
f00aae0f KS |
12666 | printf_filtered (": %s.", |
12667 | event_location_to_string (b->location)); | |
f8eba3c6 | 12668 | } |
348d480f PA |
12669 | |
12670 | if (b->loc->next) | |
12671 | { | |
12672 | struct bp_location *loc = b->loc; | |
12673 | int n = 0; | |
12674 | for (; loc; loc = loc->next) | |
12675 | ++n; | |
12676 | printf_filtered (" (%d locations)", n); | |
12677 | } | |
12678 | } | |
12679 | } | |
12680 | ||
348d480f PA |
12681 | /* Default bp_location_ops methods. */ |
12682 | ||
12683 | static void | |
12684 | bp_location_dtor (struct bp_location *self) | |
12685 | { | |
12686 | xfree (self->cond); | |
b775012e LM |
12687 | if (self->cond_bytecode) |
12688 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12689 | xfree (self->function_name); |
8b4f3082 PA |
12690 | |
12691 | VEC_free (agent_expr_p, self->target_info.conditions); | |
12692 | VEC_free (agent_expr_p, self->target_info.tcommands); | |
348d480f PA |
12693 | } |
12694 | ||
12695 | static const struct bp_location_ops bp_location_ops = | |
12696 | { | |
12697 | bp_location_dtor | |
12698 | }; | |
12699 | ||
2060206e PA |
12700 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12701 | inherit from. */ | |
348d480f | 12702 | |
2060206e PA |
12703 | static void |
12704 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12705 | { |
12706 | decref_counted_command_line (&self->commands); | |
12707 | xfree (self->cond_string); | |
fb81d016 | 12708 | xfree (self->extra_string); |
f8eba3c6 | 12709 | xfree (self->filter); |
f00aae0f KS |
12710 | delete_event_location (self->location); |
12711 | delete_event_location (self->location_range_end); | |
348d480f PA |
12712 | } |
12713 | ||
2060206e PA |
12714 | static struct bp_location * |
12715 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12716 | { |
12717 | struct bp_location *loc; | |
12718 | ||
12719 | loc = XNEW (struct bp_location); | |
12720 | init_bp_location (loc, &bp_location_ops, self); | |
12721 | return loc; | |
12722 | } | |
12723 | ||
2060206e PA |
12724 | static void |
12725 | base_breakpoint_re_set (struct breakpoint *b) | |
12726 | { | |
12727 | /* Nothing to re-set. */ | |
12728 | } | |
12729 | ||
12730 | #define internal_error_pure_virtual_called() \ | |
12731 | gdb_assert_not_reached ("pure virtual function called") | |
12732 | ||
12733 | static int | |
12734 | base_breakpoint_insert_location (struct bp_location *bl) | |
12735 | { | |
12736 | internal_error_pure_virtual_called (); | |
12737 | } | |
12738 | ||
12739 | static int | |
12740 | base_breakpoint_remove_location (struct bp_location *bl) | |
12741 | { | |
12742 | internal_error_pure_virtual_called (); | |
12743 | } | |
12744 | ||
12745 | static int | |
12746 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12747 | struct address_space *aspace, | |
09ac7c10 TT |
12748 | CORE_ADDR bp_addr, |
12749 | const struct target_waitstatus *ws) | |
2060206e PA |
12750 | { |
12751 | internal_error_pure_virtual_called (); | |
12752 | } | |
12753 | ||
12754 | static void | |
12755 | base_breakpoint_check_status (bpstat bs) | |
12756 | { | |
12757 | /* Always stop. */ | |
12758 | } | |
12759 | ||
12760 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12761 | errors. */ | |
12762 | ||
12763 | static int | |
12764 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12765 | { | |
12766 | internal_error_pure_virtual_called (); | |
12767 | } | |
12768 | ||
12769 | /* A "resources_needed" breakpoint_ops method that just internal | |
12770 | errors. */ | |
12771 | ||
12772 | static int | |
12773 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12774 | { | |
12775 | internal_error_pure_virtual_called (); | |
12776 | } | |
12777 | ||
12778 | static enum print_stop_action | |
12779 | base_breakpoint_print_it (bpstat bs) | |
12780 | { | |
12781 | internal_error_pure_virtual_called (); | |
12782 | } | |
12783 | ||
12784 | static void | |
12785 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12786 | struct ui_out *uiout) | |
12787 | { | |
12788 | /* nothing */ | |
12789 | } | |
12790 | ||
12791 | static void | |
12792 | base_breakpoint_print_mention (struct breakpoint *b) | |
12793 | { | |
12794 | internal_error_pure_virtual_called (); | |
12795 | } | |
12796 | ||
12797 | static void | |
12798 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12799 | { | |
12800 | internal_error_pure_virtual_called (); | |
12801 | } | |
12802 | ||
983af33b | 12803 | static void |
f00aae0f KS |
12804 | base_breakpoint_create_sals_from_location |
12805 | (const struct event_location *location, | |
12806 | struct linespec_result *canonical, | |
12807 | enum bptype type_wanted) | |
983af33b SDJ |
12808 | { |
12809 | internal_error_pure_virtual_called (); | |
12810 | } | |
12811 | ||
12812 | static void | |
12813 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12814 | struct linespec_result *c, | |
983af33b | 12815 | char *cond_string, |
e7e0cddf | 12816 | char *extra_string, |
983af33b SDJ |
12817 | enum bptype type_wanted, |
12818 | enum bpdisp disposition, | |
12819 | int thread, | |
12820 | int task, int ignore_count, | |
12821 | const struct breakpoint_ops *o, | |
12822 | int from_tty, int enabled, | |
44f238bb | 12823 | int internal, unsigned flags) |
983af33b SDJ |
12824 | { |
12825 | internal_error_pure_virtual_called (); | |
12826 | } | |
12827 | ||
12828 | static void | |
f00aae0f KS |
12829 | base_breakpoint_decode_location (struct breakpoint *b, |
12830 | const struct event_location *location, | |
983af33b SDJ |
12831 | struct symtabs_and_lines *sals) |
12832 | { | |
12833 | internal_error_pure_virtual_called (); | |
12834 | } | |
12835 | ||
ab04a2af TT |
12836 | /* The default 'explains_signal' method. */ |
12837 | ||
47591c29 | 12838 | static int |
427cd150 | 12839 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12840 | { |
47591c29 | 12841 | return 1; |
ab04a2af TT |
12842 | } |
12843 | ||
9d6e6e84 HZ |
12844 | /* The default "after_condition_true" method. */ |
12845 | ||
12846 | static void | |
12847 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12848 | { | |
12849 | /* Nothing to do. */ | |
12850 | } | |
12851 | ||
ab04a2af | 12852 | struct breakpoint_ops base_breakpoint_ops = |
2060206e PA |
12853 | { |
12854 | base_breakpoint_dtor, | |
12855 | base_breakpoint_allocate_location, | |
12856 | base_breakpoint_re_set, | |
12857 | base_breakpoint_insert_location, | |
12858 | base_breakpoint_remove_location, | |
12859 | base_breakpoint_breakpoint_hit, | |
12860 | base_breakpoint_check_status, | |
12861 | base_breakpoint_resources_needed, | |
12862 | base_breakpoint_works_in_software_mode, | |
12863 | base_breakpoint_print_it, | |
12864 | NULL, | |
12865 | base_breakpoint_print_one_detail, | |
12866 | base_breakpoint_print_mention, | |
983af33b | 12867 | base_breakpoint_print_recreate, |
5f700d83 | 12868 | base_breakpoint_create_sals_from_location, |
983af33b | 12869 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12870 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12871 | base_breakpoint_explains_signal, |
12872 | base_breakpoint_after_condition_true, | |
2060206e PA |
12873 | }; |
12874 | ||
12875 | /* Default breakpoint_ops methods. */ | |
12876 | ||
12877 | static void | |
348d480f PA |
12878 | bkpt_re_set (struct breakpoint *b) |
12879 | { | |
06edf0c0 | 12880 | /* FIXME: is this still reachable? */ |
f00aae0f | 12881 | if (event_location_empty_p (b->location)) |
06edf0c0 | 12882 | { |
f00aae0f | 12883 | /* Anything without a location can't be re-set. */ |
348d480f | 12884 | delete_breakpoint (b); |
06edf0c0 | 12885 | return; |
348d480f | 12886 | } |
06edf0c0 PA |
12887 | |
12888 | breakpoint_re_set_default (b); | |
348d480f PA |
12889 | } |
12890 | ||
2060206e | 12891 | static int |
348d480f PA |
12892 | bkpt_insert_location (struct bp_location *bl) |
12893 | { | |
12894 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
7c16b83e | 12895 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12896 | else |
7c16b83e | 12897 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12898 | } |
12899 | ||
2060206e | 12900 | static int |
348d480f PA |
12901 | bkpt_remove_location (struct bp_location *bl) |
12902 | { | |
12903 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12904 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12905 | else | |
7c16b83e | 12906 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12907 | } |
12908 | ||
2060206e | 12909 | static int |
348d480f | 12910 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12911 | struct address_space *aspace, CORE_ADDR bp_addr, |
12912 | const struct target_waitstatus *ws) | |
348d480f | 12913 | { |
09ac7c10 | 12914 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12915 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12916 | return 0; |
12917 | ||
348d480f PA |
12918 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12919 | aspace, bp_addr)) | |
12920 | return 0; | |
12921 | ||
12922 | if (overlay_debugging /* unmapped overlay section */ | |
12923 | && section_is_overlay (bl->section) | |
12924 | && !section_is_mapped (bl->section)) | |
12925 | return 0; | |
12926 | ||
12927 | return 1; | |
12928 | } | |
12929 | ||
cd1608cc PA |
12930 | static int |
12931 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
12932 | struct address_space *aspace, CORE_ADDR bp_addr, | |
12933 | const struct target_waitstatus *ws) | |
12934 | { | |
12935 | if (dprintf_style == dprintf_style_agent | |
12936 | && target_can_run_breakpoint_commands ()) | |
12937 | { | |
12938 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12939 | for this address it must be for a breakpoint that happens to | |
12940 | be set at the same address. */ | |
12941 | return 0; | |
12942 | } | |
12943 | ||
12944 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12945 | } | |
12946 | ||
2060206e | 12947 | static int |
348d480f PA |
12948 | bkpt_resources_needed (const struct bp_location *bl) |
12949 | { | |
12950 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12951 | ||
12952 | return 1; | |
12953 | } | |
12954 | ||
2060206e | 12955 | static enum print_stop_action |
348d480f PA |
12956 | bkpt_print_it (bpstat bs) |
12957 | { | |
348d480f PA |
12958 | struct breakpoint *b; |
12959 | const struct bp_location *bl; | |
001c8c33 | 12960 | int bp_temp; |
79a45e25 | 12961 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12962 | |
12963 | gdb_assert (bs->bp_location_at != NULL); | |
12964 | ||
12965 | bl = bs->bp_location_at; | |
12966 | b = bs->breakpoint_at; | |
12967 | ||
001c8c33 PA |
12968 | bp_temp = b->disposition == disp_del; |
12969 | if (bl->address != bl->requested_address) | |
12970 | breakpoint_adjustment_warning (bl->requested_address, | |
12971 | bl->address, | |
12972 | b->number, 1); | |
12973 | annotate_breakpoint (b->number); | |
12974 | if (bp_temp) | |
12975 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12976 | else | |
12977 | ui_out_text (uiout, "\nBreakpoint "); | |
12978 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12979 | { |
001c8c33 PA |
12980 | ui_out_field_string (uiout, "reason", |
12981 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12982 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12983 | } |
001c8c33 PA |
12984 | ui_out_field_int (uiout, "bkptno", b->number); |
12985 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12986 | |
001c8c33 | 12987 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12988 | } |
12989 | ||
2060206e | 12990 | static void |
06edf0c0 PA |
12991 | bkpt_print_mention (struct breakpoint *b) |
12992 | { | |
79a45e25 | 12993 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12994 | return; |
12995 | ||
12996 | switch (b->type) | |
12997 | { | |
12998 | case bp_breakpoint: | |
12999 | case bp_gnu_ifunc_resolver: | |
13000 | if (b->disposition == disp_del) | |
13001 | printf_filtered (_("Temporary breakpoint")); | |
13002 | else | |
13003 | printf_filtered (_("Breakpoint")); | |
13004 | printf_filtered (_(" %d"), b->number); | |
13005 | if (b->type == bp_gnu_ifunc_resolver) | |
13006 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
13007 | break; | |
13008 | case bp_hardware_breakpoint: | |
13009 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
13010 | break; | |
e7e0cddf SS |
13011 | case bp_dprintf: |
13012 | printf_filtered (_("Dprintf %d"), b->number); | |
13013 | break; | |
06edf0c0 PA |
13014 | } |
13015 | ||
13016 | say_where (b); | |
13017 | } | |
13018 | ||
2060206e | 13019 | static void |
06edf0c0 PA |
13020 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
13021 | { | |
13022 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
13023 | fprintf_unfiltered (fp, "tbreak"); | |
13024 | else if (tp->type == bp_breakpoint) | |
13025 | fprintf_unfiltered (fp, "break"); | |
13026 | else if (tp->type == bp_hardware_breakpoint | |
13027 | && tp->disposition == disp_del) | |
13028 | fprintf_unfiltered (fp, "thbreak"); | |
13029 | else if (tp->type == bp_hardware_breakpoint) | |
13030 | fprintf_unfiltered (fp, "hbreak"); | |
13031 | else | |
13032 | internal_error (__FILE__, __LINE__, | |
13033 | _("unhandled breakpoint type %d"), (int) tp->type); | |
13034 | ||
f00aae0f KS |
13035 | fprintf_unfiltered (fp, " %s", |
13036 | event_location_to_string (tp->location)); | |
13037 | ||
13038 | /* Print out extra_string if this breakpoint is pending. It might | |
13039 | contain, for example, conditions that were set by the user. */ | |
13040 | if (tp->loc == NULL && tp->extra_string != NULL) | |
13041 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
13042 | ||
dd11a36c | 13043 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
13044 | } |
13045 | ||
983af33b | 13046 | static void |
f00aae0f KS |
13047 | bkpt_create_sals_from_location (const struct event_location *location, |
13048 | struct linespec_result *canonical, | |
13049 | enum bptype type_wanted) | |
983af33b | 13050 | { |
f00aae0f | 13051 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13052 | } |
13053 | ||
13054 | static void | |
13055 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13056 | struct linespec_result *canonical, | |
983af33b | 13057 | char *cond_string, |
e7e0cddf | 13058 | char *extra_string, |
983af33b SDJ |
13059 | enum bptype type_wanted, |
13060 | enum bpdisp disposition, | |
13061 | int thread, | |
13062 | int task, int ignore_count, | |
13063 | const struct breakpoint_ops *ops, | |
13064 | int from_tty, int enabled, | |
44f238bb | 13065 | int internal, unsigned flags) |
983af33b | 13066 | { |
023fa29b | 13067 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13068 | cond_string, extra_string, |
13069 | type_wanted, | |
983af33b SDJ |
13070 | disposition, thread, task, |
13071 | ignore_count, ops, from_tty, | |
44f238bb | 13072 | enabled, internal, flags); |
983af33b SDJ |
13073 | } |
13074 | ||
13075 | static void | |
f00aae0f KS |
13076 | bkpt_decode_location (struct breakpoint *b, |
13077 | const struct event_location *location, | |
983af33b SDJ |
13078 | struct symtabs_and_lines *sals) |
13079 | { | |
f00aae0f | 13080 | decode_location_default (b, location, sals); |
983af33b SDJ |
13081 | } |
13082 | ||
06edf0c0 PA |
13083 | /* Virtual table for internal breakpoints. */ |
13084 | ||
13085 | static void | |
13086 | internal_bkpt_re_set (struct breakpoint *b) | |
13087 | { | |
13088 | switch (b->type) | |
13089 | { | |
13090 | /* Delete overlay event and longjmp master breakpoints; they | |
13091 | will be reset later by breakpoint_re_set. */ | |
13092 | case bp_overlay_event: | |
13093 | case bp_longjmp_master: | |
13094 | case bp_std_terminate_master: | |
13095 | case bp_exception_master: | |
13096 | delete_breakpoint (b); | |
13097 | break; | |
13098 | ||
13099 | /* This breakpoint is special, it's set up when the inferior | |
13100 | starts and we really don't want to touch it. */ | |
13101 | case bp_shlib_event: | |
13102 | ||
13103 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13104 | it is set up, we do not want to touch it. */ | |
13105 | case bp_thread_event: | |
13106 | break; | |
13107 | } | |
13108 | } | |
13109 | ||
13110 | static void | |
13111 | internal_bkpt_check_status (bpstat bs) | |
13112 | { | |
a9b3a50f PA |
13113 | if (bs->breakpoint_at->type == bp_shlib_event) |
13114 | { | |
13115 | /* If requested, stop when the dynamic linker notifies GDB of | |
13116 | events. This allows the user to get control and place | |
13117 | breakpoints in initializer routines for dynamically loaded | |
13118 | objects (among other things). */ | |
13119 | bs->stop = stop_on_solib_events; | |
13120 | bs->print = stop_on_solib_events; | |
13121 | } | |
13122 | else | |
13123 | bs->stop = 0; | |
06edf0c0 PA |
13124 | } |
13125 | ||
13126 | static enum print_stop_action | |
13127 | internal_bkpt_print_it (bpstat bs) | |
13128 | { | |
06edf0c0 | 13129 | struct breakpoint *b; |
06edf0c0 | 13130 | |
06edf0c0 PA |
13131 | b = bs->breakpoint_at; |
13132 | ||
06edf0c0 PA |
13133 | switch (b->type) |
13134 | { | |
348d480f PA |
13135 | case bp_shlib_event: |
13136 | /* Did we stop because the user set the stop_on_solib_events | |
13137 | variable? (If so, we report this as a generic, "Stopped due | |
13138 | to shlib event" message.) */ | |
edcc5120 | 13139 | print_solib_event (0); |
348d480f PA |
13140 | break; |
13141 | ||
13142 | case bp_thread_event: | |
13143 | /* Not sure how we will get here. | |
13144 | GDB should not stop for these breakpoints. */ | |
13145 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13146 | break; |
13147 | ||
13148 | case bp_overlay_event: | |
13149 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13150 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13151 | break; |
13152 | ||
13153 | case bp_longjmp_master: | |
13154 | /* These should never be enabled. */ | |
13155 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13156 | break; |
13157 | ||
13158 | case bp_std_terminate_master: | |
13159 | /* These should never be enabled. */ | |
13160 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13161 | "gdb should not stop!\n")); | |
348d480f PA |
13162 | break; |
13163 | ||
13164 | case bp_exception_master: | |
13165 | /* These should never be enabled. */ | |
13166 | printf_filtered (_("Exception Master Breakpoint: " | |
13167 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13168 | break; |
13169 | } | |
13170 | ||
001c8c33 | 13171 | return PRINT_NOTHING; |
06edf0c0 PA |
13172 | } |
13173 | ||
13174 | static void | |
13175 | internal_bkpt_print_mention (struct breakpoint *b) | |
13176 | { | |
13177 | /* Nothing to mention. These breakpoints are internal. */ | |
13178 | } | |
13179 | ||
06edf0c0 PA |
13180 | /* Virtual table for momentary breakpoints */ |
13181 | ||
13182 | static void | |
13183 | momentary_bkpt_re_set (struct breakpoint *b) | |
13184 | { | |
13185 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13186 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13187 | Otherwise these should have been blown away via the cleanup chain |
13188 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13189 | } | |
13190 | ||
13191 | static void | |
13192 | momentary_bkpt_check_status (bpstat bs) | |
13193 | { | |
13194 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13195 | } | |
13196 | ||
13197 | static enum print_stop_action | |
13198 | momentary_bkpt_print_it (bpstat bs) | |
13199 | { | |
79a45e25 PA |
13200 | struct ui_out *uiout = current_uiout; |
13201 | ||
001c8c33 | 13202 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13203 | { |
001c8c33 | 13204 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13205 | |
001c8c33 PA |
13206 | switch (b->type) |
13207 | { | |
13208 | case bp_finish: | |
13209 | ui_out_field_string | |
13210 | (uiout, "reason", | |
13211 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13212 | break; | |
348d480f | 13213 | |
001c8c33 PA |
13214 | case bp_until: |
13215 | ui_out_field_string | |
13216 | (uiout, "reason", | |
13217 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13218 | break; | |
13219 | } | |
348d480f PA |
13220 | } |
13221 | ||
001c8c33 | 13222 | return PRINT_UNKNOWN; |
348d480f PA |
13223 | } |
13224 | ||
06edf0c0 PA |
13225 | static void |
13226 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13227 | { |
06edf0c0 | 13228 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13229 | } |
13230 | ||
e2e4d78b JK |
13231 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13232 | ||
13233 | It gets cleared already on the removal of the first one of such placed | |
13234 | breakpoints. This is OK as they get all removed altogether. */ | |
13235 | ||
13236 | static void | |
13237 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13238 | { | |
13239 | struct thread_info *tp = find_thread_id (self->thread); | |
13240 | ||
13241 | if (tp) | |
13242 | tp->initiating_frame = null_frame_id; | |
13243 | ||
13244 | momentary_breakpoint_ops.dtor (self); | |
13245 | } | |
13246 | ||
55aa24fb SDJ |
13247 | /* Specific methods for probe breakpoints. */ |
13248 | ||
13249 | static int | |
13250 | bkpt_probe_insert_location (struct bp_location *bl) | |
13251 | { | |
13252 | int v = bkpt_insert_location (bl); | |
13253 | ||
13254 | if (v == 0) | |
13255 | { | |
13256 | /* The insertion was successful, now let's set the probe's semaphore | |
13257 | if needed. */ | |
0ea5cda8 SDJ |
13258 | if (bl->probe.probe->pops->set_semaphore != NULL) |
13259 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
13260 | bl->probe.objfile, | |
13261 | bl->gdbarch); | |
55aa24fb SDJ |
13262 | } |
13263 | ||
13264 | return v; | |
13265 | } | |
13266 | ||
13267 | static int | |
13268 | bkpt_probe_remove_location (struct bp_location *bl) | |
13269 | { | |
13270 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
13271 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
13272 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
13273 | bl->probe.objfile, | |
13274 | bl->gdbarch); | |
55aa24fb SDJ |
13275 | |
13276 | return bkpt_remove_location (bl); | |
13277 | } | |
13278 | ||
13279 | static void | |
f00aae0f | 13280 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13281 | struct linespec_result *canonical, |
f00aae0f | 13282 | enum bptype type_wanted) |
55aa24fb SDJ |
13283 | { |
13284 | struct linespec_sals lsal; | |
13285 | ||
f00aae0f KS |
13286 | lsal.sals = parse_probes (location, canonical); |
13287 | lsal.canonical = xstrdup (event_location_to_string (canonical->location)); | |
55aa24fb SDJ |
13288 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); |
13289 | } | |
13290 | ||
13291 | static void | |
f00aae0f KS |
13292 | bkpt_probe_decode_location (struct breakpoint *b, |
13293 | const struct event_location *location, | |
55aa24fb SDJ |
13294 | struct symtabs_and_lines *sals) |
13295 | { | |
f00aae0f | 13296 | *sals = parse_probes (location, NULL); |
55aa24fb SDJ |
13297 | if (!sals->sals) |
13298 | error (_("probe not found")); | |
13299 | } | |
13300 | ||
348d480f | 13301 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13302 | |
348d480f PA |
13303 | static void |
13304 | tracepoint_re_set (struct breakpoint *b) | |
13305 | { | |
13306 | breakpoint_re_set_default (b); | |
13307 | } | |
876fa593 | 13308 | |
348d480f PA |
13309 | static int |
13310 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13311 | struct address_space *aspace, CORE_ADDR bp_addr, |
13312 | const struct target_waitstatus *ws) | |
348d480f PA |
13313 | { |
13314 | /* By definition, the inferior does not report stops at | |
13315 | tracepoints. */ | |
13316 | return 0; | |
74960c60 VP |
13317 | } |
13318 | ||
13319 | static void | |
348d480f PA |
13320 | tracepoint_print_one_detail (const struct breakpoint *self, |
13321 | struct ui_out *uiout) | |
74960c60 | 13322 | { |
d9b3f62e PA |
13323 | struct tracepoint *tp = (struct tracepoint *) self; |
13324 | if (tp->static_trace_marker_id) | |
348d480f PA |
13325 | { |
13326 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13327 | |
348d480f PA |
13328 | ui_out_text (uiout, "\tmarker id is "); |
13329 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13330 | tp->static_trace_marker_id); |
348d480f PA |
13331 | ui_out_text (uiout, "\n"); |
13332 | } | |
0d381245 VP |
13333 | } |
13334 | ||
a474d7c2 | 13335 | static void |
348d480f | 13336 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13337 | { |
79a45e25 | 13338 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13339 | return; |
cc59ec59 | 13340 | |
348d480f PA |
13341 | switch (b->type) |
13342 | { | |
13343 | case bp_tracepoint: | |
13344 | printf_filtered (_("Tracepoint")); | |
13345 | printf_filtered (_(" %d"), b->number); | |
13346 | break; | |
13347 | case bp_fast_tracepoint: | |
13348 | printf_filtered (_("Fast tracepoint")); | |
13349 | printf_filtered (_(" %d"), b->number); | |
13350 | break; | |
13351 | case bp_static_tracepoint: | |
13352 | printf_filtered (_("Static tracepoint")); | |
13353 | printf_filtered (_(" %d"), b->number); | |
13354 | break; | |
13355 | default: | |
13356 | internal_error (__FILE__, __LINE__, | |
13357 | _("unhandled tracepoint type %d"), (int) b->type); | |
13358 | } | |
13359 | ||
13360 | say_where (b); | |
a474d7c2 PA |
13361 | } |
13362 | ||
348d480f | 13363 | static void |
d9b3f62e | 13364 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13365 | { |
d9b3f62e PA |
13366 | struct tracepoint *tp = (struct tracepoint *) self; |
13367 | ||
13368 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13369 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13370 | if (self->type == bp_static_tracepoint) |
348d480f | 13371 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13372 | else if (self->type == bp_tracepoint) |
348d480f PA |
13373 | fprintf_unfiltered (fp, "trace"); |
13374 | else | |
13375 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13376 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13377 | |
f00aae0f KS |
13378 | fprintf_unfiltered (fp, " %s", |
13379 | event_location_to_string (self->location)); | |
d9b3f62e PA |
13380 | print_recreate_thread (self, fp); |
13381 | ||
13382 | if (tp->pass_count) | |
13383 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13384 | } |
13385 | ||
983af33b | 13386 | static void |
f00aae0f KS |
13387 | tracepoint_create_sals_from_location (const struct event_location *location, |
13388 | struct linespec_result *canonical, | |
13389 | enum bptype type_wanted) | |
983af33b | 13390 | { |
f00aae0f | 13391 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13392 | } |
13393 | ||
13394 | static void | |
13395 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13396 | struct linespec_result *canonical, | |
983af33b | 13397 | char *cond_string, |
e7e0cddf | 13398 | char *extra_string, |
983af33b SDJ |
13399 | enum bptype type_wanted, |
13400 | enum bpdisp disposition, | |
13401 | int thread, | |
13402 | int task, int ignore_count, | |
13403 | const struct breakpoint_ops *ops, | |
13404 | int from_tty, int enabled, | |
44f238bb | 13405 | int internal, unsigned flags) |
983af33b | 13406 | { |
023fa29b | 13407 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13408 | cond_string, extra_string, |
13409 | type_wanted, | |
983af33b SDJ |
13410 | disposition, thread, task, |
13411 | ignore_count, ops, from_tty, | |
44f238bb | 13412 | enabled, internal, flags); |
983af33b SDJ |
13413 | } |
13414 | ||
13415 | static void | |
f00aae0f KS |
13416 | tracepoint_decode_location (struct breakpoint *b, |
13417 | const struct event_location *location, | |
983af33b SDJ |
13418 | struct symtabs_and_lines *sals) |
13419 | { | |
f00aae0f | 13420 | decode_location_default (b, location, sals); |
983af33b SDJ |
13421 | } |
13422 | ||
2060206e | 13423 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13424 | |
55aa24fb SDJ |
13425 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13426 | static probe. */ | |
13427 | ||
13428 | static void | |
f00aae0f KS |
13429 | tracepoint_probe_create_sals_from_location |
13430 | (const struct event_location *location, | |
13431 | struct linespec_result *canonical, | |
13432 | enum bptype type_wanted) | |
55aa24fb SDJ |
13433 | { |
13434 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13435 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13436 | } |
13437 | ||
13438 | static void | |
f00aae0f KS |
13439 | tracepoint_probe_decode_location (struct breakpoint *b, |
13440 | const struct event_location *location, | |
55aa24fb SDJ |
13441 | struct symtabs_and_lines *sals) |
13442 | { | |
13443 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13444 | bkpt_probe_decode_location (b, location, sals); |
55aa24fb SDJ |
13445 | } |
13446 | ||
13447 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13448 | ||
5c2b4418 HZ |
13449 | /* Dprintf breakpoint_ops methods. */ |
13450 | ||
13451 | static void | |
13452 | dprintf_re_set (struct breakpoint *b) | |
13453 | { | |
13454 | breakpoint_re_set_default (b); | |
13455 | ||
f00aae0f KS |
13456 | /* extra_string should never be non-NULL for dprintf. */ |
13457 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13458 | |
13459 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13460 | 2 - create a dprintf, which resolves fine. | |
13461 | 3 - disconnect from target 1 | |
13462 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13463 | ||
13464 | After steps #3/#4, you'll want the dprintf command list to | |
13465 | be updated, because target 1 and 2 may well return different | |
13466 | answers for target_can_run_breakpoint_commands(). | |
13467 | Given absence of finer grained resetting, we get to do | |
13468 | it all the time. */ | |
13469 | if (b->extra_string != NULL) | |
13470 | update_dprintf_command_list (b); | |
13471 | } | |
13472 | ||
2d9442cc HZ |
13473 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13474 | ||
13475 | static void | |
13476 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13477 | { | |
f00aae0f KS |
13478 | fprintf_unfiltered (fp, "dprintf %s,%s", |
13479 | event_location_to_string (tp->location), | |
2d9442cc HZ |
13480 | tp->extra_string); |
13481 | print_recreate_thread (tp, fp); | |
13482 | } | |
13483 | ||
9d6e6e84 HZ |
13484 | /* Implement the "after_condition_true" breakpoint_ops method for |
13485 | dprintf. | |
13486 | ||
13487 | dprintf's are implemented with regular commands in their command | |
13488 | list, but we run the commands here instead of before presenting the | |
13489 | stop to the user, as dprintf's don't actually cause a stop. This | |
13490 | also makes it so that the commands of multiple dprintfs at the same | |
13491 | address are all handled. */ | |
13492 | ||
13493 | static void | |
13494 | dprintf_after_condition_true (struct bpstats *bs) | |
13495 | { | |
13496 | struct cleanup *old_chain; | |
13497 | struct bpstats tmp_bs = { NULL }; | |
13498 | struct bpstats *tmp_bs_p = &tmp_bs; | |
13499 | ||
13500 | /* dprintf's never cause a stop. This wasn't set in the | |
13501 | check_status hook instead because that would make the dprintf's | |
13502 | condition not be evaluated. */ | |
13503 | bs->stop = 0; | |
13504 | ||
13505 | /* Run the command list here. Take ownership of it instead of | |
13506 | copying. We never want these commands to run later in | |
13507 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13508 | be set at same address as this dprintf, or even if running the | |
13509 | commands here throws. */ | |
13510 | tmp_bs.commands = bs->commands; | |
13511 | bs->commands = NULL; | |
13512 | old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands); | |
13513 | ||
13514 | bpstat_do_actions_1 (&tmp_bs_p); | |
13515 | ||
13516 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13517 | bpstat_do_actions_1 may return early without processing the whole | |
13518 | list. */ | |
13519 | do_cleanups (old_chain); | |
13520 | } | |
13521 | ||
983af33b SDJ |
13522 | /* The breakpoint_ops structure to be used on static tracepoints with |
13523 | markers (`-m'). */ | |
13524 | ||
13525 | static void | |
f00aae0f | 13526 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13527 | struct linespec_result *canonical, |
f00aae0f | 13528 | enum bptype type_wanted) |
983af33b SDJ |
13529 | { |
13530 | struct linespec_sals lsal; | |
f00aae0f KS |
13531 | const char *arg_start, *arg; |
13532 | char *str; | |
13533 | struct cleanup *cleanup; | |
983af33b | 13534 | |
f00aae0f KS |
13535 | arg = arg_start = get_linespec_location (location); |
13536 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13537 | |
f00aae0f KS |
13538 | str = savestring (arg_start, arg - arg_start); |
13539 | cleanup = make_cleanup (xfree, str); | |
13540 | canonical->location = new_linespec_location (&str); | |
13541 | do_cleanups (cleanup); | |
983af33b | 13542 | |
f00aae0f | 13543 | lsal.canonical = xstrdup (event_location_to_string (canonical->location)); |
983af33b SDJ |
13544 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); |
13545 | } | |
13546 | ||
13547 | static void | |
13548 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13549 | struct linespec_result *canonical, | |
983af33b | 13550 | char *cond_string, |
e7e0cddf | 13551 | char *extra_string, |
983af33b SDJ |
13552 | enum bptype type_wanted, |
13553 | enum bpdisp disposition, | |
13554 | int thread, | |
13555 | int task, int ignore_count, | |
13556 | const struct breakpoint_ops *ops, | |
13557 | int from_tty, int enabled, | |
44f238bb | 13558 | int internal, unsigned flags) |
983af33b SDJ |
13559 | { |
13560 | int i; | |
52d361e1 YQ |
13561 | struct linespec_sals *lsal = VEC_index (linespec_sals, |
13562 | canonical->sals, 0); | |
983af33b SDJ |
13563 | |
13564 | /* If the user is creating a static tracepoint by marker id | |
13565 | (strace -m MARKER_ID), then store the sals index, so that | |
13566 | breakpoint_re_set can try to match up which of the newly | |
13567 | found markers corresponds to this one, and, don't try to | |
13568 | expand multiple locations for each sal, given than SALS | |
13569 | already should contain all sals for MARKER_ID. */ | |
13570 | ||
13571 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13572 | { | |
13573 | struct symtabs_and_lines expanded; | |
13574 | struct tracepoint *tp; | |
13575 | struct cleanup *old_chain; | |
f00aae0f | 13576 | struct event_location *location; |
983af33b SDJ |
13577 | |
13578 | expanded.nelts = 1; | |
13579 | expanded.sals = &lsal->sals.sals[i]; | |
13580 | ||
f00aae0f KS |
13581 | location = copy_event_location (canonical->location); |
13582 | old_chain = make_cleanup_delete_event_location (location); | |
983af33b SDJ |
13583 | |
13584 | tp = XCNEW (struct tracepoint); | |
13585 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
f00aae0f | 13586 | location, NULL, |
e7e0cddf SS |
13587 | cond_string, extra_string, |
13588 | type_wanted, disposition, | |
983af33b | 13589 | thread, task, ignore_count, ops, |
44f238bb | 13590 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13591 | canonical->special_display); |
13592 | /* Given that its possible to have multiple markers with | |
13593 | the same string id, if the user is creating a static | |
13594 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13595 | store the sals index, so that breakpoint_re_set can | |
13596 | try to match up which of the newly found markers | |
13597 | corresponds to this one */ | |
13598 | tp->static_trace_marker_id_idx = i; | |
13599 | ||
13600 | install_breakpoint (internal, &tp->base, 0); | |
13601 | ||
13602 | discard_cleanups (old_chain); | |
13603 | } | |
13604 | } | |
13605 | ||
13606 | static void | |
f00aae0f KS |
13607 | strace_marker_decode_location (struct breakpoint *b, |
13608 | const struct event_location *location, | |
983af33b SDJ |
13609 | struct symtabs_and_lines *sals) |
13610 | { | |
13611 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13612 | const char *s = get_linespec_location (location); |
983af33b | 13613 | |
f00aae0f | 13614 | *sals = decode_static_tracepoint_spec (&s); |
983af33b SDJ |
13615 | if (sals->nelts > tp->static_trace_marker_id_idx) |
13616 | { | |
13617 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13618 | sals->nelts = 1; | |
13619 | } | |
13620 | else | |
13621 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13622 | } | |
13623 | ||
13624 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13625 | ||
13626 | static int | |
13627 | strace_marker_p (struct breakpoint *b) | |
13628 | { | |
13629 | return b->ops == &strace_marker_breakpoint_ops; | |
13630 | } | |
13631 | ||
53a5351d | 13632 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13633 | structures. */ |
c906108c SS |
13634 | |
13635 | void | |
fba45db2 | 13636 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13637 | { |
52f0bd74 | 13638 | struct breakpoint *b; |
c906108c | 13639 | |
8a3fe4f8 | 13640 | gdb_assert (bpt != NULL); |
c906108c | 13641 | |
4a64f543 MS |
13642 | /* Has this bp already been deleted? This can happen because |
13643 | multiple lists can hold pointers to bp's. bpstat lists are | |
13644 | especial culprits. | |
13645 | ||
13646 | One example of this happening is a watchpoint's scope bp. When | |
13647 | the scope bp triggers, we notice that the watchpoint is out of | |
13648 | scope, and delete it. We also delete its scope bp. But the | |
13649 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13650 | That bpstat is then checked for auto-deleting bp's, which are | |
13651 | deleted. | |
13652 | ||
13653 | A real solution to this problem might involve reference counts in | |
13654 | bp's, and/or giving them pointers back to their referencing | |
13655 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13656 | storage when no more references were extent. A cheaper bandaid | |
13657 | was chosen. */ | |
c906108c SS |
13658 | if (bpt->type == bp_none) |
13659 | return; | |
13660 | ||
4a64f543 MS |
13661 | /* At least avoid this stale reference until the reference counting |
13662 | of breakpoints gets resolved. */ | |
d0fb5eae | 13663 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13664 | { |
d0fb5eae | 13665 | struct breakpoint *related; |
3a5c3e22 | 13666 | struct watchpoint *w; |
d0fb5eae JK |
13667 | |
13668 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13669 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13670 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13671 | w = (struct watchpoint *) bpt; |
13672 | else | |
13673 | w = NULL; | |
13674 | if (w != NULL) | |
13675 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13676 | |
13677 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13678 | for (related = bpt; related->related_breakpoint != bpt; | |
13679 | related = related->related_breakpoint); | |
13680 | related->related_breakpoint = bpt->related_breakpoint; | |
13681 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13682 | } |
13683 | ||
a9634178 TJB |
13684 | /* watch_command_1 creates a watchpoint but only sets its number if |
13685 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13686 | a problem in that process, we'll be asked to delete the half-created | |
13687 | watchpoint. In that case, don't announce the deletion. */ | |
13688 | if (bpt->number) | |
13689 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13690 | |
c906108c SS |
13691 | if (breakpoint_chain == bpt) |
13692 | breakpoint_chain = bpt->next; | |
13693 | ||
c906108c SS |
13694 | ALL_BREAKPOINTS (b) |
13695 | if (b->next == bpt) | |
c5aa993b JM |
13696 | { |
13697 | b->next = bpt->next; | |
13698 | break; | |
13699 | } | |
c906108c | 13700 | |
f431efe5 PA |
13701 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13702 | been freed. */ | |
13703 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13704 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13705 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13706 | commands are associated with the bpstat; if we remove it here, | |
13707 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13708 | event-top.c won't do anything, and temporary breakpoints with | |
13709 | commands won't work. */ | |
13710 | ||
13711 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13712 | ||
4a64f543 MS |
13713 | /* Now that breakpoint is removed from breakpoint list, update the |
13714 | global location list. This will remove locations that used to | |
13715 | belong to this breakpoint. Do this before freeing the breakpoint | |
13716 | itself, since remove_breakpoint looks at location's owner. It | |
13717 | might be better design to have location completely | |
13718 | self-contained, but it's not the case now. */ | |
44702360 | 13719 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13720 | |
348d480f | 13721 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13722 | /* On the chance that someone will soon try again to delete this |
13723 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13724 | bpt->type = bp_none; |
b8c9b27d | 13725 | xfree (bpt); |
c906108c SS |
13726 | } |
13727 | ||
4d6140d9 AC |
13728 | static void |
13729 | do_delete_breakpoint_cleanup (void *b) | |
13730 | { | |
13731 | delete_breakpoint (b); | |
13732 | } | |
13733 | ||
13734 | struct cleanup * | |
13735 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13736 | { | |
13737 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13738 | } | |
13739 | ||
51be5b68 PA |
13740 | /* Iterator function to call a user-provided callback function once |
13741 | for each of B and its related breakpoints. */ | |
13742 | ||
13743 | static void | |
13744 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13745 | void (*function) (struct breakpoint *, | |
13746 | void *), | |
13747 | void *data) | |
13748 | { | |
13749 | struct breakpoint *related; | |
13750 | ||
13751 | related = b; | |
13752 | do | |
13753 | { | |
13754 | struct breakpoint *next; | |
13755 | ||
13756 | /* FUNCTION may delete RELATED. */ | |
13757 | next = related->related_breakpoint; | |
13758 | ||
13759 | if (next == related) | |
13760 | { | |
13761 | /* RELATED is the last ring entry. */ | |
13762 | function (related, data); | |
13763 | ||
13764 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13765 | B. There's nothing left to do anyway, so just break | |
13766 | out. */ | |
13767 | break; | |
13768 | } | |
13769 | else | |
13770 | function (related, data); | |
13771 | ||
13772 | related = next; | |
13773 | } | |
13774 | while (related != b); | |
13775 | } | |
95a42b64 TT |
13776 | |
13777 | static void | |
13778 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13779 | { | |
13780 | delete_breakpoint (b); | |
13781 | } | |
13782 | ||
51be5b68 PA |
13783 | /* A callback for map_breakpoint_numbers that calls |
13784 | delete_breakpoint. */ | |
13785 | ||
13786 | static void | |
13787 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13788 | { | |
13789 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13790 | } | |
13791 | ||
c906108c | 13792 | void |
fba45db2 | 13793 | delete_command (char *arg, int from_tty) |
c906108c | 13794 | { |
35df4500 | 13795 | struct breakpoint *b, *b_tmp; |
c906108c | 13796 | |
ea9365bb TT |
13797 | dont_repeat (); |
13798 | ||
c906108c SS |
13799 | if (arg == 0) |
13800 | { | |
13801 | int breaks_to_delete = 0; | |
13802 | ||
46c6471b PA |
13803 | /* Delete all breakpoints if no argument. Do not delete |
13804 | internal breakpoints, these have to be deleted with an | |
13805 | explicit breakpoint number argument. */ | |
c5aa993b | 13806 | ALL_BREAKPOINTS (b) |
46c6471b | 13807 | if (user_breakpoint_p (b)) |
973d738b DJ |
13808 | { |
13809 | breaks_to_delete = 1; | |
13810 | break; | |
13811 | } | |
c906108c SS |
13812 | |
13813 | /* Ask user only if there are some breakpoints to delete. */ | |
13814 | if (!from_tty | |
e2e0b3e5 | 13815 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13816 | { |
35df4500 | 13817 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13818 | if (user_breakpoint_p (b)) |
c5aa993b | 13819 | delete_breakpoint (b); |
c906108c SS |
13820 | } |
13821 | } | |
13822 | else | |
51be5b68 | 13823 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13824 | } |
13825 | ||
0d381245 VP |
13826 | static int |
13827 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13828 | { |
0d381245 | 13829 | for (; loc; loc = loc->next) |
8645ff69 UW |
13830 | if (!loc->shlib_disabled |
13831 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13832 | return 0; |
13833 | return 1; | |
fe3f5fa8 VP |
13834 | } |
13835 | ||
776592bf DE |
13836 | /* Subroutine of update_breakpoint_locations to simplify it. |
13837 | Return non-zero if multiple fns in list LOC have the same name. | |
13838 | Null names are ignored. */ | |
13839 | ||
13840 | static int | |
13841 | ambiguous_names_p (struct bp_location *loc) | |
13842 | { | |
13843 | struct bp_location *l; | |
13844 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13845 | (int (*) (const void *, |
13846 | const void *)) streq, | |
776592bf DE |
13847 | NULL, xcalloc, xfree); |
13848 | ||
13849 | for (l = loc; l != NULL; l = l->next) | |
13850 | { | |
13851 | const char **slot; | |
13852 | const char *name = l->function_name; | |
13853 | ||
13854 | /* Allow for some names to be NULL, ignore them. */ | |
13855 | if (name == NULL) | |
13856 | continue; | |
13857 | ||
13858 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13859 | INSERT); | |
4a64f543 MS |
13860 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13861 | returns NULL. */ | |
776592bf DE |
13862 | if (*slot != NULL) |
13863 | { | |
13864 | htab_delete (htab); | |
13865 | return 1; | |
13866 | } | |
13867 | *slot = name; | |
13868 | } | |
13869 | ||
13870 | htab_delete (htab); | |
13871 | return 0; | |
13872 | } | |
13873 | ||
0fb4aa4b PA |
13874 | /* When symbols change, it probably means the sources changed as well, |
13875 | and it might mean the static tracepoint markers are no longer at | |
13876 | the same address or line numbers they used to be at last we | |
13877 | checked. Losing your static tracepoints whenever you rebuild is | |
13878 | undesirable. This function tries to resync/rematch gdb static | |
13879 | tracepoints with the markers on the target, for static tracepoints | |
13880 | that have not been set by marker id. Static tracepoint that have | |
13881 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13882 | The heuristic is: | |
13883 | ||
13884 | 1) For a tracepoint set at a specific address, look for a marker at | |
13885 | the old PC. If one is found there, assume to be the same marker. | |
13886 | If the name / string id of the marker found is different from the | |
13887 | previous known name, assume that means the user renamed the marker | |
13888 | in the sources, and output a warning. | |
13889 | ||
13890 | 2) For a tracepoint set at a given line number, look for a marker | |
13891 | at the new address of the old line number. If one is found there, | |
13892 | assume to be the same marker. If the name / string id of the | |
13893 | marker found is different from the previous known name, assume that | |
13894 | means the user renamed the marker in the sources, and output a | |
13895 | warning. | |
13896 | ||
13897 | 3) If a marker is no longer found at the same address or line, it | |
13898 | may mean the marker no longer exists. But it may also just mean | |
13899 | the code changed a bit. Maybe the user added a few lines of code | |
13900 | that made the marker move up or down (in line number terms). Ask | |
13901 | the target for info about the marker with the string id as we knew | |
13902 | it. If found, update line number and address in the matching | |
13903 | static tracepoint. This will get confused if there's more than one | |
13904 | marker with the same ID (possible in UST, although unadvised | |
13905 | precisely because it confuses tools). */ | |
13906 | ||
13907 | static struct symtab_and_line | |
13908 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13909 | { | |
d9b3f62e | 13910 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13911 | struct static_tracepoint_marker marker; |
13912 | CORE_ADDR pc; | |
0fb4aa4b PA |
13913 | |
13914 | pc = sal.pc; | |
13915 | if (sal.line) | |
13916 | find_line_pc (sal.symtab, sal.line, &pc); | |
13917 | ||
13918 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13919 | { | |
d9b3f62e | 13920 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13921 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13922 | b->number, | |
d9b3f62e | 13923 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13924 | |
d9b3f62e PA |
13925 | xfree (tp->static_trace_marker_id); |
13926 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13927 | release_static_tracepoint_marker (&marker); |
13928 | ||
13929 | return sal; | |
13930 | } | |
13931 | ||
13932 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13933 | by string ID. */ | |
13934 | if (!sal.explicit_pc | |
13935 | && sal.line != 0 | |
13936 | && sal.symtab != NULL | |
d9b3f62e | 13937 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13938 | { |
13939 | VEC(static_tracepoint_marker_p) *markers; | |
13940 | ||
13941 | markers | |
d9b3f62e | 13942 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13943 | |
13944 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13945 | { | |
80e1d417 | 13946 | struct symtab_and_line sal2; |
0fb4aa4b | 13947 | struct symbol *sym; |
80e1d417 | 13948 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13949 | struct ui_out *uiout = current_uiout; |
67994074 | 13950 | struct explicit_location explicit_loc; |
0fb4aa4b | 13951 | |
80e1d417 | 13952 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13953 | |
d9b3f62e | 13954 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13955 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13956 | |
13957 | warning (_("marker for static tracepoint %d (%s) not " | |
13958 | "found at previous line number"), | |
d9b3f62e | 13959 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13960 | |
80e1d417 | 13961 | init_sal (&sal2); |
0fb4aa4b | 13962 | |
80e1d417 | 13963 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13964 | |
80e1d417 AS |
13965 | sal2 = find_pc_line (tpmarker->address, 0); |
13966 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13967 | ui_out_text (uiout, "Now in "); |
13968 | if (sym) | |
13969 | { | |
13970 | ui_out_field_string (uiout, "func", | |
13971 | SYMBOL_PRINT_NAME (sym)); | |
13972 | ui_out_text (uiout, " at "); | |
13973 | } | |
05cba821 JK |
13974 | ui_out_field_string (uiout, "file", |
13975 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
13976 | ui_out_text (uiout, ":"); |
13977 | ||
13978 | if (ui_out_is_mi_like_p (uiout)) | |
13979 | { | |
0b0865da | 13980 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13981 | |
f35a17b5 | 13982 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
13983 | } |
13984 | ||
80e1d417 | 13985 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13986 | ui_out_text (uiout, "\n"); |
13987 | ||
80e1d417 | 13988 | b->loc->line_number = sal2.line; |
2f202fde | 13989 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13990 | |
f00aae0f | 13991 | delete_event_location (b->location); |
67994074 KS |
13992 | initialize_explicit_location (&explicit_loc); |
13993 | explicit_loc.source_filename | |
00e52e53 | 13994 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13995 | explicit_loc.line_offset.offset = b->loc->line_number; |
13996 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
13997 | b->location = new_explicit_location (&explicit_loc); | |
0fb4aa4b PA |
13998 | |
13999 | /* Might be nice to check if function changed, and warn if | |
14000 | so. */ | |
14001 | ||
80e1d417 | 14002 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
14003 | } |
14004 | } | |
14005 | return sal; | |
14006 | } | |
14007 | ||
8d3788bd VP |
14008 | /* Returns 1 iff locations A and B are sufficiently same that |
14009 | we don't need to report breakpoint as changed. */ | |
14010 | ||
14011 | static int | |
14012 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
14013 | { | |
14014 | while (a && b) | |
14015 | { | |
14016 | if (a->address != b->address) | |
14017 | return 0; | |
14018 | ||
14019 | if (a->shlib_disabled != b->shlib_disabled) | |
14020 | return 0; | |
14021 | ||
14022 | if (a->enabled != b->enabled) | |
14023 | return 0; | |
14024 | ||
14025 | a = a->next; | |
14026 | b = b->next; | |
14027 | } | |
14028 | ||
14029 | if ((a == NULL) != (b == NULL)) | |
14030 | return 0; | |
14031 | ||
14032 | return 1; | |
14033 | } | |
14034 | ||
f1310107 TJB |
14035 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
14036 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
14037 | a ranged breakpoint. */ | |
14038 | ||
0e30163f | 14039 | void |
0d381245 | 14040 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
14041 | struct symtabs_and_lines sals, |
14042 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
14043 | { |
14044 | int i; | |
0d381245 VP |
14045 | struct bp_location *existing_locations = b->loc; |
14046 | ||
f8eba3c6 TT |
14047 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
14048 | { | |
14049 | /* Ranged breakpoints have only one start location and one end | |
14050 | location. */ | |
14051 | b->enable_state = bp_disabled; | |
44702360 | 14052 | update_global_location_list (UGLL_MAY_INSERT); |
f8eba3c6 TT |
14053 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
14054 | "multiple locations found\n"), | |
14055 | b->number); | |
14056 | return; | |
14057 | } | |
f1310107 | 14058 | |
4a64f543 MS |
14059 | /* If there's no new locations, and all existing locations are |
14060 | pending, don't do anything. This optimizes the common case where | |
14061 | all locations are in the same shared library, that was unloaded. | |
14062 | We'd like to retain the location, so that when the library is | |
14063 | loaded again, we don't loose the enabled/disabled status of the | |
14064 | individual locations. */ | |
0d381245 | 14065 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
14066 | return; |
14067 | ||
fe3f5fa8 VP |
14068 | b->loc = NULL; |
14069 | ||
0d381245 | 14070 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 14071 | { |
f8eba3c6 TT |
14072 | struct bp_location *new_loc; |
14073 | ||
14074 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
14075 | ||
14076 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 14077 | |
0d381245 VP |
14078 | /* Reparse conditions, they might contain references to the |
14079 | old symtab. */ | |
14080 | if (b->cond_string != NULL) | |
14081 | { | |
bbc13ae3 | 14082 | const char *s; |
fe3f5fa8 | 14083 | |
0d381245 | 14084 | s = b->cond_string; |
492d29ea | 14085 | TRY |
0d381245 | 14086 | { |
1bb9788d TT |
14087 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
14088 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
14089 | 0); |
14090 | } | |
492d29ea | 14091 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 14092 | { |
3e43a32a MS |
14093 | warning (_("failed to reevaluate condition " |
14094 | "for breakpoint %d: %s"), | |
0d381245 VP |
14095 | b->number, e.message); |
14096 | new_loc->enabled = 0; | |
14097 | } | |
492d29ea | 14098 | END_CATCH |
0d381245 | 14099 | } |
fe3f5fa8 | 14100 | |
f1310107 TJB |
14101 | if (sals_end.nelts) |
14102 | { | |
14103 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
14104 | ||
14105 | new_loc->length = end - sals.sals[0].pc + 1; | |
14106 | } | |
0d381245 | 14107 | } |
fe3f5fa8 | 14108 | |
4a64f543 MS |
14109 | /* If possible, carry over 'disable' status from existing |
14110 | breakpoints. */ | |
0d381245 VP |
14111 | { |
14112 | struct bp_location *e = existing_locations; | |
776592bf DE |
14113 | /* If there are multiple breakpoints with the same function name, |
14114 | e.g. for inline functions, comparing function names won't work. | |
14115 | Instead compare pc addresses; this is just a heuristic as things | |
14116 | may have moved, but in practice it gives the correct answer | |
14117 | often enough until a better solution is found. */ | |
14118 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14119 | ||
0d381245 VP |
14120 | for (; e; e = e->next) |
14121 | { | |
14122 | if (!e->enabled && e->function_name) | |
14123 | { | |
14124 | struct bp_location *l = b->loc; | |
776592bf DE |
14125 | if (have_ambiguous_names) |
14126 | { | |
14127 | for (; l; l = l->next) | |
f1310107 | 14128 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14129 | { |
14130 | l->enabled = 0; | |
14131 | break; | |
14132 | } | |
14133 | } | |
14134 | else | |
14135 | { | |
14136 | for (; l; l = l->next) | |
14137 | if (l->function_name | |
14138 | && strcmp (e->function_name, l->function_name) == 0) | |
14139 | { | |
14140 | l->enabled = 0; | |
14141 | break; | |
14142 | } | |
14143 | } | |
0d381245 VP |
14144 | } |
14145 | } | |
14146 | } | |
fe3f5fa8 | 14147 | |
8d3788bd VP |
14148 | if (!locations_are_equal (existing_locations, b->loc)) |
14149 | observer_notify_breakpoint_modified (b); | |
14150 | ||
44702360 | 14151 | update_global_location_list (UGLL_MAY_INSERT); |
fe3f5fa8 VP |
14152 | } |
14153 | ||
f00aae0f | 14154 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
14155 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
14156 | ||
14157 | static struct symtabs_and_lines | |
f00aae0f KS |
14158 | location_to_sals (struct breakpoint *b, struct event_location *location, |
14159 | int *found) | |
ef23e705 | 14160 | { |
02d20e4a | 14161 | struct symtabs_and_lines sals = {0}; |
492d29ea | 14162 | struct gdb_exception exception = exception_none; |
ef23e705 | 14163 | |
983af33b | 14164 | gdb_assert (b->ops != NULL); |
ef23e705 | 14165 | |
492d29ea | 14166 | TRY |
ef23e705 | 14167 | { |
f00aae0f | 14168 | b->ops->decode_location (b, location, &sals); |
ef23e705 | 14169 | } |
492d29ea | 14170 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
14171 | { |
14172 | int not_found_and_ok = 0; | |
492d29ea PA |
14173 | |
14174 | exception = e; | |
14175 | ||
ef23e705 TJB |
14176 | /* For pending breakpoints, it's expected that parsing will |
14177 | fail until the right shared library is loaded. User has | |
14178 | already told to create pending breakpoints and don't need | |
14179 | extra messages. If breakpoint is in bp_shlib_disabled | |
14180 | state, then user already saw the message about that | |
14181 | breakpoint being disabled, and don't want to see more | |
14182 | errors. */ | |
58438ac1 | 14183 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14184 | && (b->condition_not_parsed |
14185 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14186 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14187 | || b->enable_state == bp_disabled)) |
14188 | not_found_and_ok = 1; | |
14189 | ||
14190 | if (!not_found_and_ok) | |
14191 | { | |
14192 | /* We surely don't want to warn about the same breakpoint | |
14193 | 10 times. One solution, implemented here, is disable | |
14194 | the breakpoint on error. Another solution would be to | |
14195 | have separate 'warning emitted' flag. Since this | |
14196 | happens only when a binary has changed, I don't know | |
14197 | which approach is better. */ | |
14198 | b->enable_state = bp_disabled; | |
14199 | throw_exception (e); | |
14200 | } | |
14201 | } | |
492d29ea | 14202 | END_CATCH |
ef23e705 | 14203 | |
492d29ea | 14204 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 14205 | { |
f8eba3c6 | 14206 | int i; |
ef23e705 | 14207 | |
f8eba3c6 TT |
14208 | for (i = 0; i < sals.nelts; ++i) |
14209 | resolve_sal_pc (&sals.sals[i]); | |
f00aae0f | 14210 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 14211 | { |
ed1d1739 KS |
14212 | char *cond_string, *extra_string; |
14213 | int thread, task; | |
ef23e705 | 14214 | |
f00aae0f | 14215 | find_condition_and_thread (b->extra_string, sals.sals[0].pc, |
e7e0cddf SS |
14216 | &cond_string, &thread, &task, |
14217 | &extra_string); | |
f00aae0f | 14218 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
14219 | if (cond_string) |
14220 | b->cond_string = cond_string; | |
14221 | b->thread = thread; | |
14222 | b->task = task; | |
e7e0cddf | 14223 | if (extra_string) |
f00aae0f KS |
14224 | { |
14225 | xfree (b->extra_string); | |
14226 | b->extra_string = extra_string; | |
14227 | } | |
ef23e705 TJB |
14228 | b->condition_not_parsed = 0; |
14229 | } | |
14230 | ||
983af33b | 14231 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14232 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14233 | |
58438ac1 TT |
14234 | *found = 1; |
14235 | } | |
14236 | else | |
14237 | *found = 0; | |
ef23e705 TJB |
14238 | |
14239 | return sals; | |
14240 | } | |
14241 | ||
348d480f PA |
14242 | /* The default re_set method, for typical hardware or software |
14243 | breakpoints. Reevaluate the breakpoint and recreate its | |
14244 | locations. */ | |
14245 | ||
14246 | static void | |
28010a5d | 14247 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14248 | { |
14249 | int found; | |
f1310107 | 14250 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14251 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14252 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 | 14253 | |
f00aae0f | 14254 | sals = location_to_sals (b, b->location, &found); |
ef23e705 TJB |
14255 | if (found) |
14256 | { | |
14257 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14258 | expanded = sals; |
ef23e705 TJB |
14259 | } |
14260 | ||
f00aae0f | 14261 | if (b->location_range_end != NULL) |
f1310107 | 14262 | { |
f00aae0f | 14263 | sals_end = location_to_sals (b, b->location_range_end, &found); |
f1310107 TJB |
14264 | if (found) |
14265 | { | |
14266 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14267 | expanded_end = sals_end; |
f1310107 TJB |
14268 | } |
14269 | } | |
14270 | ||
14271 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14272 | } |
14273 | ||
983af33b SDJ |
14274 | /* Default method for creating SALs from an address string. It basically |
14275 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14276 | ||
14277 | static void | |
f00aae0f KS |
14278 | create_sals_from_location_default (const struct event_location *location, |
14279 | struct linespec_result *canonical, | |
14280 | enum bptype type_wanted) | |
983af33b | 14281 | { |
f00aae0f | 14282 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
14283 | } |
14284 | ||
14285 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14286 | function for the `create_breakpoints_sal' method of | |
14287 | breakpoint_ops. */ | |
14288 | ||
14289 | static void | |
14290 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14291 | struct linespec_result *canonical, | |
983af33b | 14292 | char *cond_string, |
e7e0cddf | 14293 | char *extra_string, |
983af33b SDJ |
14294 | enum bptype type_wanted, |
14295 | enum bpdisp disposition, | |
14296 | int thread, | |
14297 | int task, int ignore_count, | |
14298 | const struct breakpoint_ops *ops, | |
14299 | int from_tty, int enabled, | |
44f238bb | 14300 | int internal, unsigned flags) |
983af33b SDJ |
14301 | { |
14302 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14303 | extra_string, |
983af33b SDJ |
14304 | type_wanted, disposition, |
14305 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14306 | enabled, internal, flags); |
983af33b SDJ |
14307 | } |
14308 | ||
14309 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 14310 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b SDJ |
14311 | |
14312 | static void | |
f00aae0f KS |
14313 | decode_location_default (struct breakpoint *b, |
14314 | const struct event_location *location, | |
983af33b SDJ |
14315 | struct symtabs_and_lines *sals) |
14316 | { | |
14317 | struct linespec_result canonical; | |
14318 | ||
14319 | init_linespec_result (&canonical); | |
f00aae0f | 14320 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, |
983af33b SDJ |
14321 | (struct symtab *) NULL, 0, |
14322 | &canonical, multiple_symbols_all, | |
14323 | b->filter); | |
14324 | ||
14325 | /* We should get 0 or 1 resulting SALs. */ | |
14326 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14327 | ||
14328 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14329 | { | |
14330 | struct linespec_sals *lsal; | |
14331 | ||
14332 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14333 | *sals = lsal->sals; | |
14334 | /* Arrange it so the destructor does not free the | |
14335 | contents. */ | |
14336 | lsal->sals.sals = NULL; | |
14337 | } | |
14338 | ||
14339 | destroy_linespec_result (&canonical); | |
14340 | } | |
14341 | ||
28010a5d PA |
14342 | /* Prepare the global context for a re-set of breakpoint B. */ |
14343 | ||
14344 | static struct cleanup * | |
14345 | prepare_re_set_context (struct breakpoint *b) | |
14346 | { | |
14347 | struct cleanup *cleanups; | |
14348 | ||
14349 | input_radix = b->input_radix; | |
14350 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14351 | if (b->pspace != NULL) |
14352 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14353 | set_language (b->language); |
14354 | ||
14355 | return cleanups; | |
ef23e705 TJB |
14356 | } |
14357 | ||
c906108c SS |
14358 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14359 | The value we return ends up being the return value from catch_errors. | |
14360 | Unused in this case. */ | |
14361 | ||
14362 | static int | |
4efb68b1 | 14363 | breakpoint_re_set_one (void *bint) |
c906108c | 14364 | { |
4a64f543 | 14365 | /* Get past catch_errs. */ |
53a5351d | 14366 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14367 | struct cleanup *cleanups; |
c906108c | 14368 | |
348d480f PA |
14369 | cleanups = prepare_re_set_context (b); |
14370 | b->ops->re_set (b); | |
14371 | do_cleanups (cleanups); | |
c906108c SS |
14372 | return 0; |
14373 | } | |
14374 | ||
69de3c6a | 14375 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14376 | void |
69de3c6a | 14377 | breakpoint_re_set (void) |
c906108c | 14378 | { |
35df4500 | 14379 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14380 | enum language save_language; |
14381 | int save_input_radix; | |
6c95b8df | 14382 | struct cleanup *old_chain; |
c5aa993b | 14383 | |
c906108c SS |
14384 | save_language = current_language->la_language; |
14385 | save_input_radix = input_radix; | |
6c95b8df PA |
14386 | old_chain = save_current_program_space (); |
14387 | ||
35df4500 | 14388 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14389 | { |
4a64f543 | 14390 | /* Format possible error msg. */ |
fe3f5fa8 | 14391 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14392 | b->number); |
14393 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14394 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14395 | do_cleanups (cleanups); |
c5aa993b | 14396 | } |
c906108c SS |
14397 | set_language (save_language); |
14398 | input_radix = save_input_radix; | |
e62c965a | 14399 | |
0756c555 | 14400 | jit_breakpoint_re_set (); |
4efc6507 | 14401 | |
6c95b8df PA |
14402 | do_cleanups (old_chain); |
14403 | ||
af02033e PP |
14404 | create_overlay_event_breakpoint (); |
14405 | create_longjmp_master_breakpoint (); | |
14406 | create_std_terminate_master_breakpoint (); | |
186c406b | 14407 | create_exception_master_breakpoint (); |
c906108c SS |
14408 | } |
14409 | \f | |
c906108c SS |
14410 | /* Reset the thread number of this breakpoint: |
14411 | ||
14412 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14413 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14414 | void |
fba45db2 | 14415 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14416 | { |
14417 | if (b->thread != -1) | |
14418 | { | |
39f77062 KB |
14419 | if (in_thread_list (inferior_ptid)) |
14420 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14421 | |
14422 | /* We're being called after following a fork. The new fork is | |
14423 | selected as current, and unless this was a vfork will have a | |
14424 | different program space from the original thread. Reset that | |
14425 | as well. */ | |
14426 | b->loc->pspace = current_program_space; | |
c906108c SS |
14427 | } |
14428 | } | |
14429 | ||
03ac34d5 MS |
14430 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14431 | If from_tty is nonzero, it prints a message to that effect, | |
14432 | which ends with a period (no newline). */ | |
14433 | ||
c906108c | 14434 | void |
fba45db2 | 14435 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14436 | { |
52f0bd74 | 14437 | struct breakpoint *b; |
c906108c SS |
14438 | |
14439 | if (count < 0) | |
14440 | count = 0; | |
14441 | ||
14442 | ALL_BREAKPOINTS (b) | |
14443 | if (b->number == bptnum) | |
c5aa993b | 14444 | { |
d77f58be SS |
14445 | if (is_tracepoint (b)) |
14446 | { | |
14447 | if (from_tty && count != 0) | |
14448 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14449 | bptnum); | |
14450 | return; | |
14451 | } | |
14452 | ||
c5aa993b | 14453 | b->ignore_count = count; |
221ea385 KS |
14454 | if (from_tty) |
14455 | { | |
14456 | if (count == 0) | |
3e43a32a MS |
14457 | printf_filtered (_("Will stop next time " |
14458 | "breakpoint %d is reached."), | |
221ea385 KS |
14459 | bptnum); |
14460 | else if (count == 1) | |
a3f17187 | 14461 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14462 | bptnum); |
14463 | else | |
3e43a32a MS |
14464 | printf_filtered (_("Will ignore next %d " |
14465 | "crossings of breakpoint %d."), | |
221ea385 KS |
14466 | count, bptnum); |
14467 | } | |
8d3788bd | 14468 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14469 | return; |
14470 | } | |
c906108c | 14471 | |
8a3fe4f8 | 14472 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14473 | } |
14474 | ||
c906108c SS |
14475 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14476 | ||
14477 | static void | |
fba45db2 | 14478 | ignore_command (char *args, int from_tty) |
c906108c SS |
14479 | { |
14480 | char *p = args; | |
52f0bd74 | 14481 | int num; |
c906108c SS |
14482 | |
14483 | if (p == 0) | |
e2e0b3e5 | 14484 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14485 | |
c906108c | 14486 | num = get_number (&p); |
5c44784c | 14487 | if (num == 0) |
8a3fe4f8 | 14488 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14489 | if (*p == 0) |
8a3fe4f8 | 14490 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14491 | |
14492 | set_ignore_count (num, | |
14493 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14494 | from_tty); | |
221ea385 KS |
14495 | if (from_tty) |
14496 | printf_filtered ("\n"); | |
c906108c SS |
14497 | } |
14498 | \f | |
14499 | /* Call FUNCTION on each of the breakpoints | |
14500 | whose numbers are given in ARGS. */ | |
14501 | ||
14502 | static void | |
95a42b64 TT |
14503 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14504 | void *), | |
14505 | void *data) | |
c906108c | 14506 | { |
52f0bd74 AC |
14507 | int num; |
14508 | struct breakpoint *b, *tmp; | |
11cf8741 | 14509 | int match; |
197f0a60 | 14510 | struct get_number_or_range_state state; |
c906108c | 14511 | |
b9d61307 | 14512 | if (args == 0 || *args == '\0') |
e2e0b3e5 | 14513 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14514 | |
197f0a60 TT |
14515 | init_number_or_range (&state, args); |
14516 | ||
14517 | while (!state.finished) | |
c906108c | 14518 | { |
e799154c | 14519 | const char *p = state.string; |
197f0a60 | 14520 | |
11cf8741 | 14521 | match = 0; |
c5aa993b | 14522 | |
197f0a60 | 14523 | num = get_number_or_range (&state); |
5c44784c | 14524 | if (num == 0) |
c5aa993b | 14525 | { |
8a3fe4f8 | 14526 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14527 | } |
14528 | else | |
14529 | { | |
14530 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14531 | if (b->number == num) | |
14532 | { | |
11cf8741 | 14533 | match = 1; |
cdac0397 | 14534 | function (b, data); |
11cf8741 | 14535 | break; |
5c44784c | 14536 | } |
11cf8741 | 14537 | if (match == 0) |
a3f17187 | 14538 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14539 | } |
c906108c SS |
14540 | } |
14541 | } | |
14542 | ||
0d381245 VP |
14543 | static struct bp_location * |
14544 | find_location_by_number (char *number) | |
14545 | { | |
14546 | char *dot = strchr (number, '.'); | |
14547 | char *p1; | |
14548 | int bp_num; | |
14549 | int loc_num; | |
14550 | struct breakpoint *b; | |
14551 | struct bp_location *loc; | |
14552 | ||
14553 | *dot = '\0'; | |
14554 | ||
14555 | p1 = number; | |
197f0a60 | 14556 | bp_num = get_number (&p1); |
0d381245 VP |
14557 | if (bp_num == 0) |
14558 | error (_("Bad breakpoint number '%s'"), number); | |
14559 | ||
14560 | ALL_BREAKPOINTS (b) | |
14561 | if (b->number == bp_num) | |
14562 | { | |
14563 | break; | |
14564 | } | |
14565 | ||
14566 | if (!b || b->number != bp_num) | |
14567 | error (_("Bad breakpoint number '%s'"), number); | |
14568 | ||
14569 | p1 = dot+1; | |
197f0a60 | 14570 | loc_num = get_number (&p1); |
0d381245 VP |
14571 | if (loc_num == 0) |
14572 | error (_("Bad breakpoint location number '%s'"), number); | |
14573 | ||
14574 | --loc_num; | |
14575 | loc = b->loc; | |
14576 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14577 | ; | |
14578 | if (!loc) | |
14579 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14580 | ||
14581 | return loc; | |
14582 | } | |
14583 | ||
14584 | ||
1900040c MS |
14585 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14586 | If from_tty is nonzero, it prints a message to that effect, | |
14587 | which ends with a period (no newline). */ | |
14588 | ||
c906108c | 14589 | void |
fba45db2 | 14590 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14591 | { |
14592 | /* Never disable a watchpoint scope breakpoint; we want to | |
14593 | hit them when we leave scope so we can delete both the | |
14594 | watchpoint and its scope breakpoint at that time. */ | |
14595 | if (bpt->type == bp_watchpoint_scope) | |
14596 | return; | |
14597 | ||
b5de0fa7 | 14598 | bpt->enable_state = bp_disabled; |
c906108c | 14599 | |
b775012e LM |
14600 | /* Mark breakpoint locations modified. */ |
14601 | mark_breakpoint_modified (bpt); | |
14602 | ||
d248b706 KY |
14603 | if (target_supports_enable_disable_tracepoint () |
14604 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14605 | { | |
14606 | struct bp_location *location; | |
14607 | ||
14608 | for (location = bpt->loc; location; location = location->next) | |
14609 | target_disable_tracepoint (location); | |
14610 | } | |
14611 | ||
44702360 | 14612 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14613 | |
8d3788bd | 14614 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14615 | } |
14616 | ||
51be5b68 PA |
14617 | /* A callback for iterate_over_related_breakpoints. */ |
14618 | ||
14619 | static void | |
14620 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14621 | { | |
14622 | disable_breakpoint (b); | |
14623 | } | |
14624 | ||
95a42b64 TT |
14625 | /* A callback for map_breakpoint_numbers that calls |
14626 | disable_breakpoint. */ | |
14627 | ||
14628 | static void | |
14629 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14630 | { | |
51be5b68 | 14631 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14632 | } |
14633 | ||
c906108c | 14634 | static void |
fba45db2 | 14635 | disable_command (char *args, int from_tty) |
c906108c | 14636 | { |
c906108c | 14637 | if (args == 0) |
46c6471b PA |
14638 | { |
14639 | struct breakpoint *bpt; | |
14640 | ||
14641 | ALL_BREAKPOINTS (bpt) | |
14642 | if (user_breakpoint_p (bpt)) | |
14643 | disable_breakpoint (bpt); | |
14644 | } | |
9eaabc75 | 14645 | else |
0d381245 | 14646 | { |
9eaabc75 MW |
14647 | char *num = extract_arg (&args); |
14648 | ||
14649 | while (num) | |
d248b706 | 14650 | { |
9eaabc75 | 14651 | if (strchr (num, '.')) |
b775012e | 14652 | { |
9eaabc75 MW |
14653 | struct bp_location *loc = find_location_by_number (num); |
14654 | ||
14655 | if (loc) | |
14656 | { | |
14657 | if (loc->enabled) | |
14658 | { | |
14659 | loc->enabled = 0; | |
14660 | mark_breakpoint_location_modified (loc); | |
14661 | } | |
14662 | if (target_supports_enable_disable_tracepoint () | |
14663 | && current_trace_status ()->running && loc->owner | |
14664 | && is_tracepoint (loc->owner)) | |
14665 | target_disable_tracepoint (loc); | |
14666 | } | |
44702360 | 14667 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 14668 | } |
9eaabc75 MW |
14669 | else |
14670 | map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL); | |
14671 | num = extract_arg (&args); | |
d248b706 | 14672 | } |
0d381245 | 14673 | } |
c906108c SS |
14674 | } |
14675 | ||
14676 | static void | |
816338b5 SS |
14677 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14678 | int count) | |
c906108c | 14679 | { |
afe38095 | 14680 | int target_resources_ok; |
c906108c SS |
14681 | |
14682 | if (bpt->type == bp_hardware_breakpoint) | |
14683 | { | |
14684 | int i; | |
c5aa993b | 14685 | i = hw_breakpoint_used_count (); |
53a5351d | 14686 | target_resources_ok = |
d92524f1 | 14687 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14688 | i + 1, 0); |
c906108c | 14689 | if (target_resources_ok == 0) |
8a3fe4f8 | 14690 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14691 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14692 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14693 | } |
14694 | ||
cc60f2e3 | 14695 | if (is_watchpoint (bpt)) |
c906108c | 14696 | { |
d07205c2 | 14697 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14698 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14699 | |
492d29ea | 14700 | TRY |
c906108c | 14701 | { |
3a5c3e22 PA |
14702 | struct watchpoint *w = (struct watchpoint *) bpt; |
14703 | ||
1e718ff1 TJB |
14704 | orig_enable_state = bpt->enable_state; |
14705 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14706 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14707 | } |
492d29ea | 14708 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14709 | { |
1e718ff1 | 14710 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14711 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14712 | bpt->number); | |
14713 | return; | |
c5aa993b | 14714 | } |
492d29ea | 14715 | END_CATCH |
c906108c | 14716 | } |
0101ce28 | 14717 | |
b775012e LM |
14718 | bpt->enable_state = bp_enabled; |
14719 | ||
14720 | /* Mark breakpoint locations modified. */ | |
14721 | mark_breakpoint_modified (bpt); | |
14722 | ||
d248b706 KY |
14723 | if (target_supports_enable_disable_tracepoint () |
14724 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14725 | { | |
14726 | struct bp_location *location; | |
14727 | ||
14728 | for (location = bpt->loc; location; location = location->next) | |
14729 | target_enable_tracepoint (location); | |
14730 | } | |
14731 | ||
b4c291bb | 14732 | bpt->disposition = disposition; |
816338b5 | 14733 | bpt->enable_count = count; |
44702360 | 14734 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14735 | |
8d3788bd | 14736 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14737 | } |
14738 | ||
fe3f5fa8 | 14739 | |
c906108c | 14740 | void |
fba45db2 | 14741 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14742 | { |
816338b5 | 14743 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14744 | } |
14745 | ||
14746 | static void | |
14747 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14748 | { | |
14749 | enable_breakpoint (bpt); | |
c906108c SS |
14750 | } |
14751 | ||
95a42b64 TT |
14752 | /* A callback for map_breakpoint_numbers that calls |
14753 | enable_breakpoint. */ | |
14754 | ||
14755 | static void | |
14756 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14757 | { | |
51be5b68 | 14758 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14759 | } |
14760 | ||
c906108c SS |
14761 | /* The enable command enables the specified breakpoints (or all defined |
14762 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14763 | in stopping the inferior. */ |
c906108c | 14764 | |
c906108c | 14765 | static void |
fba45db2 | 14766 | enable_command (char *args, int from_tty) |
c906108c | 14767 | { |
c906108c | 14768 | if (args == 0) |
46c6471b PA |
14769 | { |
14770 | struct breakpoint *bpt; | |
14771 | ||
14772 | ALL_BREAKPOINTS (bpt) | |
14773 | if (user_breakpoint_p (bpt)) | |
14774 | enable_breakpoint (bpt); | |
14775 | } | |
9eaabc75 | 14776 | else |
0d381245 | 14777 | { |
9eaabc75 MW |
14778 | char *num = extract_arg (&args); |
14779 | ||
14780 | while (num) | |
d248b706 | 14781 | { |
9eaabc75 | 14782 | if (strchr (num, '.')) |
b775012e | 14783 | { |
9eaabc75 MW |
14784 | struct bp_location *loc = find_location_by_number (num); |
14785 | ||
14786 | if (loc) | |
14787 | { | |
14788 | if (!loc->enabled) | |
14789 | { | |
14790 | loc->enabled = 1; | |
14791 | mark_breakpoint_location_modified (loc); | |
14792 | } | |
14793 | if (target_supports_enable_disable_tracepoint () | |
14794 | && current_trace_status ()->running && loc->owner | |
14795 | && is_tracepoint (loc->owner)) | |
14796 | target_enable_tracepoint (loc); | |
14797 | } | |
44702360 | 14798 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 14799 | } |
9eaabc75 MW |
14800 | else |
14801 | map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL); | |
14802 | num = extract_arg (&args); | |
d248b706 | 14803 | } |
0d381245 | 14804 | } |
c906108c SS |
14805 | } |
14806 | ||
816338b5 SS |
14807 | /* This struct packages up disposition data for application to multiple |
14808 | breakpoints. */ | |
14809 | ||
14810 | struct disp_data | |
14811 | { | |
14812 | enum bpdisp disp; | |
14813 | int count; | |
14814 | }; | |
14815 | ||
c906108c | 14816 | static void |
51be5b68 PA |
14817 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14818 | { | |
816338b5 | 14819 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14820 | |
816338b5 | 14821 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14822 | } |
14823 | ||
14824 | static void | |
14825 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14826 | { |
816338b5 | 14827 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14828 | |
14829 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14830 | } |
14831 | ||
c906108c | 14832 | static void |
fba45db2 | 14833 | enable_once_command (char *args, int from_tty) |
c906108c | 14834 | { |
51be5b68 | 14835 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14836 | } |
14837 | ||
816338b5 SS |
14838 | static void |
14839 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14840 | { | |
14841 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14842 | ||
14843 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14844 | } | |
14845 | ||
14846 | static void | |
14847 | enable_count_command (char *args, int from_tty) | |
14848 | { | |
b9d61307 SM |
14849 | int count; |
14850 | ||
14851 | if (args == NULL) | |
14852 | error_no_arg (_("hit count")); | |
14853 | ||
14854 | count = get_number (&args); | |
816338b5 SS |
14855 | |
14856 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14857 | } | |
14858 | ||
c906108c | 14859 | static void |
51be5b68 | 14860 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14861 | { |
816338b5 | 14862 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14863 | |
14864 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14865 | } |
14866 | ||
c906108c | 14867 | static void |
fba45db2 | 14868 | enable_delete_command (char *args, int from_tty) |
c906108c | 14869 | { |
51be5b68 | 14870 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14871 | } |
14872 | \f | |
fa8d40ab JJ |
14873 | static void |
14874 | set_breakpoint_cmd (char *args, int from_tty) | |
14875 | { | |
14876 | } | |
14877 | ||
14878 | static void | |
14879 | show_breakpoint_cmd (char *args, int from_tty) | |
14880 | { | |
14881 | } | |
14882 | ||
1f3b5d1b PP |
14883 | /* Invalidate last known value of any hardware watchpoint if |
14884 | the memory which that value represents has been written to by | |
14885 | GDB itself. */ | |
14886 | ||
14887 | static void | |
8de0566d YQ |
14888 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14889 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14890 | const bfd_byte *data) |
14891 | { | |
14892 | struct breakpoint *bp; | |
14893 | ||
14894 | ALL_BREAKPOINTS (bp) | |
14895 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14896 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14897 | { |
3a5c3e22 | 14898 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14899 | |
3a5c3e22 PA |
14900 | if (wp->val_valid && wp->val) |
14901 | { | |
14902 | struct bp_location *loc; | |
14903 | ||
14904 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14905 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14906 | && loc->address + loc->length > addr | |
14907 | && addr + len > loc->address) | |
14908 | { | |
14909 | value_free (wp->val); | |
14910 | wp->val = NULL; | |
14911 | wp->val_valid = 0; | |
14912 | } | |
14913 | } | |
1f3b5d1b PP |
14914 | } |
14915 | } | |
14916 | ||
8181d85f DJ |
14917 | /* Create and insert a breakpoint for software single step. */ |
14918 | ||
14919 | void | |
6c95b8df | 14920 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14921 | struct address_space *aspace, |
14922 | CORE_ADDR next_pc) | |
8181d85f | 14923 | { |
7c16b83e PA |
14924 | struct thread_info *tp = inferior_thread (); |
14925 | struct symtab_and_line sal; | |
14926 | CORE_ADDR pc = next_pc; | |
8181d85f | 14927 | |
34b7e8a6 PA |
14928 | if (tp->control.single_step_breakpoints == NULL) |
14929 | { | |
14930 | tp->control.single_step_breakpoints | |
14931 | = new_single_step_breakpoint (tp->num, gdbarch); | |
14932 | } | |
8181d85f | 14933 | |
7c16b83e PA |
14934 | sal = find_pc_line (pc, 0); |
14935 | sal.pc = pc; | |
14936 | sal.section = find_pc_overlay (pc); | |
14937 | sal.explicit_pc = 1; | |
34b7e8a6 | 14938 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14939 | |
7c16b83e | 14940 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14941 | } |
14942 | ||
34b7e8a6 | 14943 | /* See breakpoint.h. */ |
f02253f1 HZ |
14944 | |
14945 | int | |
7c16b83e PA |
14946 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
14947 | struct address_space *aspace, | |
14948 | CORE_ADDR pc) | |
1aafd4da | 14949 | { |
7c16b83e | 14950 | struct bp_location *loc; |
1aafd4da | 14951 | |
7c16b83e PA |
14952 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14953 | if (loc->inserted | |
14954 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14955 | return 1; | |
1aafd4da | 14956 | |
7c16b83e | 14957 | return 0; |
ef370185 JB |
14958 | } |
14959 | ||
14960 | /* Check whether a software single-step breakpoint is inserted at | |
14961 | PC. */ | |
14962 | ||
14963 | int | |
14964 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, | |
14965 | CORE_ADDR pc) | |
14966 | { | |
34b7e8a6 PA |
14967 | struct breakpoint *bpt; |
14968 | ||
14969 | ALL_BREAKPOINTS (bpt) | |
14970 | { | |
14971 | if (bpt->type == bp_single_step | |
14972 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14973 | return 1; | |
14974 | } | |
14975 | return 0; | |
1aafd4da UW |
14976 | } |
14977 | ||
1042e4c0 SS |
14978 | /* Tracepoint-specific operations. */ |
14979 | ||
14980 | /* Set tracepoint count to NUM. */ | |
14981 | static void | |
14982 | set_tracepoint_count (int num) | |
14983 | { | |
14984 | tracepoint_count = num; | |
4fa62494 | 14985 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14986 | } |
14987 | ||
70221824 | 14988 | static void |
1042e4c0 SS |
14989 | trace_command (char *arg, int from_tty) |
14990 | { | |
55aa24fb | 14991 | struct breakpoint_ops *ops; |
f00aae0f KS |
14992 | struct event_location *location; |
14993 | struct cleanup *back_to; | |
55aa24fb | 14994 | |
f00aae0f KS |
14995 | location = string_to_event_location (&arg, current_language); |
14996 | back_to = make_cleanup_delete_event_location (location); | |
5b56227b KS |
14997 | if (location != NULL |
14998 | && event_location_type (location) == PROBE_LOCATION) | |
55aa24fb SDJ |
14999 | ops = &tracepoint_probe_breakpoint_ops; |
15000 | else | |
15001 | ops = &tracepoint_breakpoint_ops; | |
15002 | ||
558a9d82 | 15003 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15004 | location, |
15005 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15006 | 0 /* tempflag */, |
15007 | bp_tracepoint /* type_wanted */, | |
15008 | 0 /* Ignore count */, | |
15009 | pending_break_support, | |
15010 | ops, | |
15011 | from_tty, | |
15012 | 1 /* enabled */, | |
15013 | 0 /* internal */, 0); | |
f00aae0f | 15014 | do_cleanups (back_to); |
1042e4c0 SS |
15015 | } |
15016 | ||
70221824 | 15017 | static void |
7a697b8d SS |
15018 | ftrace_command (char *arg, int from_tty) |
15019 | { | |
f00aae0f KS |
15020 | struct event_location *location; |
15021 | struct cleanup *back_to; | |
15022 | ||
15023 | location = string_to_event_location (&arg, current_language); | |
15024 | back_to = make_cleanup_delete_event_location (location); | |
558a9d82 | 15025 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15026 | location, |
15027 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15028 | 0 /* tempflag */, |
15029 | bp_fast_tracepoint /* type_wanted */, | |
15030 | 0 /* Ignore count */, | |
15031 | pending_break_support, | |
15032 | &tracepoint_breakpoint_ops, | |
15033 | from_tty, | |
15034 | 1 /* enabled */, | |
15035 | 0 /* internal */, 0); | |
f00aae0f | 15036 | do_cleanups (back_to); |
0fb4aa4b PA |
15037 | } |
15038 | ||
15039 | /* strace command implementation. Creates a static tracepoint. */ | |
15040 | ||
70221824 | 15041 | static void |
0fb4aa4b PA |
15042 | strace_command (char *arg, int from_tty) |
15043 | { | |
983af33b | 15044 | struct breakpoint_ops *ops; |
f00aae0f KS |
15045 | struct event_location *location; |
15046 | struct cleanup *back_to; | |
983af33b SDJ |
15047 | |
15048 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15049 | or with a normal static tracepoint. */ | |
61012eef | 15050 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
15051 | { |
15052 | ops = &strace_marker_breakpoint_ops; | |
15053 | location = new_linespec_location (&arg); | |
15054 | } | |
983af33b | 15055 | else |
f00aae0f KS |
15056 | { |
15057 | ops = &tracepoint_breakpoint_ops; | |
15058 | location = string_to_event_location (&arg, current_language); | |
15059 | } | |
983af33b | 15060 | |
f00aae0f | 15061 | back_to = make_cleanup_delete_event_location (location); |
558a9d82 | 15062 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15063 | location, |
15064 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15065 | 0 /* tempflag */, |
15066 | bp_static_tracepoint /* type_wanted */, | |
15067 | 0 /* Ignore count */, | |
15068 | pending_break_support, | |
15069 | ops, | |
15070 | from_tty, | |
15071 | 1 /* enabled */, | |
15072 | 0 /* internal */, 0); | |
f00aae0f | 15073 | do_cleanups (back_to); |
7a697b8d SS |
15074 | } |
15075 | ||
409873ef SS |
15076 | /* Set up a fake reader function that gets command lines from a linked |
15077 | list that was acquired during tracepoint uploading. */ | |
15078 | ||
15079 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15080 | static int next_cmd; |
409873ef SS |
15081 | |
15082 | static char * | |
15083 | read_uploaded_action (void) | |
15084 | { | |
15085 | char *rslt; | |
15086 | ||
3149d8c1 | 15087 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15088 | |
3149d8c1 | 15089 | next_cmd++; |
409873ef SS |
15090 | |
15091 | return rslt; | |
15092 | } | |
15093 | ||
00bf0b85 SS |
15094 | /* Given information about a tracepoint as recorded on a target (which |
15095 | can be either a live system or a trace file), attempt to create an | |
15096 | equivalent GDB tracepoint. This is not a reliable process, since | |
15097 | the target does not necessarily have all the information used when | |
15098 | the tracepoint was originally defined. */ | |
15099 | ||
d9b3f62e | 15100 | struct tracepoint * |
00bf0b85 | 15101 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15102 | { |
409873ef | 15103 | char *addr_str, small_buf[100]; |
d9b3f62e | 15104 | struct tracepoint *tp; |
f00aae0f KS |
15105 | struct event_location *location; |
15106 | struct cleanup *cleanup; | |
fd9b8c24 | 15107 | |
409873ef SS |
15108 | if (utp->at_string) |
15109 | addr_str = utp->at_string; | |
15110 | else | |
15111 | { | |
15112 | /* In the absence of a source location, fall back to raw | |
15113 | address. Since there is no way to confirm that the address | |
15114 | means the same thing as when the trace was started, warn the | |
15115 | user. */ | |
3e43a32a MS |
15116 | warning (_("Uploaded tracepoint %d has no " |
15117 | "source location, using raw address"), | |
409873ef | 15118 | utp->number); |
8c042590 | 15119 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15120 | addr_str = small_buf; |
15121 | } | |
15122 | ||
15123 | /* There's not much we can do with a sequence of bytecodes. */ | |
15124 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15125 | warning (_("Uploaded tracepoint %d condition " |
15126 | "has no source form, ignoring it"), | |
409873ef | 15127 | utp->number); |
d5551862 | 15128 | |
f00aae0f KS |
15129 | location = string_to_event_location (&addr_str, current_language); |
15130 | cleanup = make_cleanup_delete_event_location (location); | |
8cdf0e15 | 15131 | if (!create_breakpoint (get_current_arch (), |
f00aae0f KS |
15132 | location, |
15133 | utp->cond_string, -1, addr_str, | |
e7e0cddf | 15134 | 0 /* parse cond/thread */, |
8cdf0e15 | 15135 | 0 /* tempflag */, |
0fb4aa4b | 15136 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15137 | 0 /* Ignore count */, |
15138 | pending_break_support, | |
348d480f | 15139 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15140 | 0 /* from_tty */, |
84f4c1fe | 15141 | utp->enabled /* enabled */, |
44f238bb PA |
15142 | 0 /* internal */, |
15143 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
f00aae0f KS |
15144 | { |
15145 | do_cleanups (cleanup); | |
15146 | return NULL; | |
15147 | } | |
15148 | ||
15149 | do_cleanups (cleanup); | |
fd9b8c24 | 15150 | |
409873ef | 15151 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15152 | tp = get_tracepoint (tracepoint_count); |
15153 | gdb_assert (tp != NULL); | |
d5551862 | 15154 | |
00bf0b85 SS |
15155 | if (utp->pass > 0) |
15156 | { | |
8c042590 PM |
15157 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15158 | tp->base.number); | |
00bf0b85 | 15159 | |
409873ef | 15160 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15161 | } |
15162 | ||
409873ef SS |
15163 | /* If we have uploaded versions of the original commands, set up a |
15164 | special-purpose "reader" function and call the usual command line | |
15165 | reader, then pass the result to the breakpoint command-setting | |
15166 | function. */ | |
3149d8c1 | 15167 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15168 | { |
409873ef | 15169 | struct command_line *cmd_list; |
00bf0b85 | 15170 | |
409873ef | 15171 | this_utp = utp; |
3149d8c1 | 15172 | next_cmd = 0; |
d5551862 | 15173 | |
409873ef SS |
15174 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15175 | ||
d9b3f62e | 15176 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15177 | } |
3149d8c1 SS |
15178 | else if (!VEC_empty (char_ptr, utp->actions) |
15179 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15180 | warning (_("Uploaded tracepoint %d actions " |
15181 | "have no source form, ignoring them"), | |
409873ef | 15182 | utp->number); |
00bf0b85 | 15183 | |
f196051f SS |
15184 | /* Copy any status information that might be available. */ |
15185 | tp->base.hit_count = utp->hit_count; | |
15186 | tp->traceframe_usage = utp->traceframe_usage; | |
15187 | ||
00bf0b85 | 15188 | return tp; |
d9b3f62e | 15189 | } |
00bf0b85 | 15190 | |
1042e4c0 SS |
15191 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15192 | omitted. */ | |
15193 | ||
15194 | static void | |
e5a67952 | 15195 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15196 | { |
79a45e25 | 15197 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15198 | int num_printed; |
1042e4c0 | 15199 | |
e5a67952 | 15200 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15201 | |
15202 | if (num_printed == 0) | |
1042e4c0 | 15203 | { |
e5a67952 | 15204 | if (args == NULL || *args == '\0') |
d77f58be SS |
15205 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15206 | else | |
e5a67952 | 15207 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15208 | } |
ad443146 SS |
15209 | |
15210 | default_collect_info (); | |
1042e4c0 SS |
15211 | } |
15212 | ||
4a64f543 | 15213 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15214 | Not supported by all targets. */ |
15215 | static void | |
15216 | enable_trace_command (char *args, int from_tty) | |
15217 | { | |
15218 | enable_command (args, from_tty); | |
15219 | } | |
15220 | ||
4a64f543 | 15221 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15222 | Not supported by all targets. */ |
15223 | static void | |
15224 | disable_trace_command (char *args, int from_tty) | |
15225 | { | |
15226 | disable_command (args, from_tty); | |
15227 | } | |
15228 | ||
4a64f543 | 15229 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15230 | static void |
15231 | delete_trace_command (char *arg, int from_tty) | |
15232 | { | |
35df4500 | 15233 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15234 | |
15235 | dont_repeat (); | |
15236 | ||
15237 | if (arg == 0) | |
15238 | { | |
15239 | int breaks_to_delete = 0; | |
15240 | ||
15241 | /* Delete all breakpoints if no argument. | |
15242 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15243 | have to be deleted with an explicit breakpoint number |
15244 | argument. */ | |
1042e4c0 | 15245 | ALL_TRACEPOINTS (b) |
46c6471b | 15246 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15247 | { |
15248 | breaks_to_delete = 1; | |
15249 | break; | |
15250 | } | |
1042e4c0 SS |
15251 | |
15252 | /* Ask user only if there are some breakpoints to delete. */ | |
15253 | if (!from_tty | |
15254 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15255 | { | |
35df4500 | 15256 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15257 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15258 | delete_breakpoint (b); |
1042e4c0 SS |
15259 | } |
15260 | } | |
15261 | else | |
51be5b68 | 15262 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15263 | } |
15264 | ||
197f0a60 TT |
15265 | /* Helper function for trace_pass_command. */ |
15266 | ||
15267 | static void | |
d9b3f62e | 15268 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15269 | { |
d9b3f62e | 15270 | tp->pass_count = count; |
6f6484cd | 15271 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15272 | if (from_tty) |
15273 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15274 | tp->base.number, count); |
197f0a60 TT |
15275 | } |
15276 | ||
1042e4c0 SS |
15277 | /* Set passcount for tracepoint. |
15278 | ||
15279 | First command argument is passcount, second is tracepoint number. | |
15280 | If tracepoint number omitted, apply to most recently defined. | |
15281 | Also accepts special argument "all". */ | |
15282 | ||
15283 | static void | |
15284 | trace_pass_command (char *args, int from_tty) | |
15285 | { | |
d9b3f62e | 15286 | struct tracepoint *t1; |
1042e4c0 | 15287 | unsigned int count; |
1042e4c0 SS |
15288 | |
15289 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15290 | error (_("passcount command requires an " |
15291 | "argument (count + optional TP num)")); | |
1042e4c0 | 15292 | |
4a64f543 | 15293 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15294 | |
529480d0 | 15295 | args = skip_spaces (args); |
1042e4c0 SS |
15296 | if (*args && strncasecmp (args, "all", 3) == 0) |
15297 | { | |
d9b3f62e PA |
15298 | struct breakpoint *b; |
15299 | ||
1042e4c0 | 15300 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15301 | if (*args) |
15302 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15303 | |
d9b3f62e | 15304 | ALL_TRACEPOINTS (b) |
197f0a60 | 15305 | { |
d9b3f62e | 15306 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15307 | trace_pass_set_count (t1, count, from_tty); |
15308 | } | |
15309 | } | |
15310 | else if (*args == '\0') | |
1042e4c0 | 15311 | { |
5fa1d40e | 15312 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15313 | if (t1) |
197f0a60 TT |
15314 | trace_pass_set_count (t1, count, from_tty); |
15315 | } | |
15316 | else | |
15317 | { | |
15318 | struct get_number_or_range_state state; | |
15319 | ||
15320 | init_number_or_range (&state, args); | |
15321 | while (!state.finished) | |
1042e4c0 | 15322 | { |
5fa1d40e | 15323 | t1 = get_tracepoint_by_number (&args, &state); |
197f0a60 TT |
15324 | if (t1) |
15325 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15326 | } |
15327 | } | |
1042e4c0 SS |
15328 | } |
15329 | ||
d9b3f62e | 15330 | struct tracepoint * |
1042e4c0 SS |
15331 | get_tracepoint (int num) |
15332 | { | |
15333 | struct breakpoint *t; | |
15334 | ||
15335 | ALL_TRACEPOINTS (t) | |
15336 | if (t->number == num) | |
d9b3f62e | 15337 | return (struct tracepoint *) t; |
1042e4c0 SS |
15338 | |
15339 | return NULL; | |
15340 | } | |
15341 | ||
d5551862 SS |
15342 | /* Find the tracepoint with the given target-side number (which may be |
15343 | different from the tracepoint number after disconnecting and | |
15344 | reconnecting). */ | |
15345 | ||
d9b3f62e | 15346 | struct tracepoint * |
d5551862 SS |
15347 | get_tracepoint_by_number_on_target (int num) |
15348 | { | |
d9b3f62e | 15349 | struct breakpoint *b; |
d5551862 | 15350 | |
d9b3f62e PA |
15351 | ALL_TRACEPOINTS (b) |
15352 | { | |
15353 | struct tracepoint *t = (struct tracepoint *) b; | |
15354 | ||
15355 | if (t->number_on_target == num) | |
15356 | return t; | |
15357 | } | |
d5551862 SS |
15358 | |
15359 | return NULL; | |
15360 | } | |
15361 | ||
1042e4c0 | 15362 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15363 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15364 | If the argument is missing, the most recent tracepoint |
15365 | (tracepoint_count) is returned. */ | |
15366 | ||
d9b3f62e | 15367 | struct tracepoint * |
197f0a60 | 15368 | get_tracepoint_by_number (char **arg, |
5fa1d40e | 15369 | struct get_number_or_range_state *state) |
1042e4c0 | 15370 | { |
1042e4c0 SS |
15371 | struct breakpoint *t; |
15372 | int tpnum; | |
15373 | char *instring = arg == NULL ? NULL : *arg; | |
15374 | ||
197f0a60 TT |
15375 | if (state) |
15376 | { | |
15377 | gdb_assert (!state->finished); | |
15378 | tpnum = get_number_or_range (state); | |
15379 | } | |
15380 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15381 | tpnum = tracepoint_count; |
1042e4c0 | 15382 | else |
197f0a60 | 15383 | tpnum = get_number (arg); |
1042e4c0 SS |
15384 | |
15385 | if (tpnum <= 0) | |
15386 | { | |
15387 | if (instring && *instring) | |
15388 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15389 | instring); | |
15390 | else | |
5fa1d40e | 15391 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15392 | return NULL; |
15393 | } | |
15394 | ||
15395 | ALL_TRACEPOINTS (t) | |
15396 | if (t->number == tpnum) | |
15397 | { | |
d9b3f62e | 15398 | return (struct tracepoint *) t; |
1042e4c0 SS |
15399 | } |
15400 | ||
1042e4c0 SS |
15401 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15402 | return NULL; | |
15403 | } | |
15404 | ||
d9b3f62e PA |
15405 | void |
15406 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15407 | { | |
15408 | if (b->thread != -1) | |
15409 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15410 | ||
15411 | if (b->task != 0) | |
15412 | fprintf_unfiltered (fp, " task %d", b->task); | |
15413 | ||
15414 | fprintf_unfiltered (fp, "\n"); | |
15415 | } | |
15416 | ||
6149aea9 PA |
15417 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15418 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15419 | on each breakpoint and only include the ones for which it returns | |
15420 | non-zero. */ | |
15421 | ||
1042e4c0 | 15422 | static void |
6149aea9 PA |
15423 | save_breakpoints (char *filename, int from_tty, |
15424 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15425 | { |
15426 | struct breakpoint *tp; | |
6149aea9 | 15427 | int any = 0; |
1042e4c0 | 15428 | struct cleanup *cleanup; |
a7bdde9e | 15429 | struct ui_file *fp; |
6149aea9 | 15430 | int extra_trace_bits = 0; |
1042e4c0 | 15431 | |
6149aea9 PA |
15432 | if (filename == 0 || *filename == 0) |
15433 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15434 | |
15435 | /* See if we have anything to save. */ | |
6149aea9 | 15436 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15437 | { |
6149aea9 | 15438 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15439 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15440 | continue; |
15441 | ||
15442 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15443 | if (filter && !filter (tp)) | |
15444 | continue; | |
15445 | ||
15446 | any = 1; | |
15447 | ||
15448 | if (is_tracepoint (tp)) | |
15449 | { | |
15450 | extra_trace_bits = 1; | |
15451 | ||
15452 | /* We can stop searching. */ | |
15453 | break; | |
15454 | } | |
1042e4c0 | 15455 | } |
6149aea9 PA |
15456 | |
15457 | if (!any) | |
1042e4c0 | 15458 | { |
6149aea9 | 15459 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15460 | return; |
15461 | } | |
15462 | ||
c718be47 PA |
15463 | filename = tilde_expand (filename); |
15464 | cleanup = make_cleanup (xfree, filename); | |
15465 | fp = gdb_fopen (filename, "w"); | |
059fb39f | 15466 | if (!fp) |
6149aea9 PA |
15467 | error (_("Unable to open file '%s' for saving (%s)"), |
15468 | filename, safe_strerror (errno)); | |
a7bdde9e | 15469 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15470 | |
6149aea9 PA |
15471 | if (extra_trace_bits) |
15472 | save_trace_state_variables (fp); | |
8bf6485c | 15473 | |
6149aea9 | 15474 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15475 | { |
6149aea9 | 15476 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15477 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15478 | continue; |
8bf6485c | 15479 | |
6149aea9 PA |
15480 | /* If we have a filter, only save the breakpoints it accepts. */ |
15481 | if (filter && !filter (tp)) | |
15482 | continue; | |
15483 | ||
348d480f | 15484 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15485 | |
6149aea9 PA |
15486 | /* Note, we can't rely on tp->number for anything, as we can't |
15487 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15488 | instead. */ | |
15489 | ||
15490 | if (tp->cond_string) | |
15491 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15492 | ||
15493 | if (tp->ignore_count) | |
15494 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15495 | ||
2d9442cc | 15496 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15497 | { |
6c63c96a | 15498 | struct gdb_exception exception; |
a7bdde9e | 15499 | |
6149aea9 | 15500 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15501 | |
79a45e25 | 15502 | ui_out_redirect (current_uiout, fp); |
492d29ea | 15503 | TRY |
1042e4c0 | 15504 | { |
79a45e25 | 15505 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15506 | } |
492d29ea PA |
15507 | CATCH (ex, RETURN_MASK_ALL) |
15508 | { | |
6c63c96a | 15509 | ui_out_redirect (current_uiout, NULL); |
492d29ea PA |
15510 | throw_exception (ex); |
15511 | } | |
15512 | END_CATCH | |
1042e4c0 | 15513 | |
6c63c96a | 15514 | ui_out_redirect (current_uiout, NULL); |
a7bdde9e | 15515 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15516 | } |
6149aea9 PA |
15517 | |
15518 | if (tp->enable_state == bp_disabled) | |
99894e11 | 15519 | fprintf_unfiltered (fp, "disable $bpnum\n"); |
6149aea9 PA |
15520 | |
15521 | /* If this is a multi-location breakpoint, check if the locations | |
15522 | should be individually disabled. Watchpoint locations are | |
15523 | special, and not user visible. */ | |
15524 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15525 | { | |
15526 | struct bp_location *loc; | |
15527 | int n = 1; | |
15528 | ||
15529 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15530 | if (!loc->enabled) | |
15531 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15532 | } | |
1042e4c0 | 15533 | } |
8bf6485c | 15534 | |
6149aea9 | 15535 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15536 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15537 | ||
1042e4c0 | 15538 | if (from_tty) |
6149aea9 | 15539 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
c718be47 | 15540 | do_cleanups (cleanup); |
6149aea9 PA |
15541 | } |
15542 | ||
15543 | /* The `save breakpoints' command. */ | |
15544 | ||
15545 | static void | |
15546 | save_breakpoints_command (char *args, int from_tty) | |
15547 | { | |
15548 | save_breakpoints (args, from_tty, NULL); | |
15549 | } | |
15550 | ||
15551 | /* The `save tracepoints' command. */ | |
15552 | ||
15553 | static void | |
15554 | save_tracepoints_command (char *args, int from_tty) | |
15555 | { | |
15556 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15557 | } |
15558 | ||
15559 | /* Create a vector of all tracepoints. */ | |
15560 | ||
15561 | VEC(breakpoint_p) * | |
eeae04df | 15562 | all_tracepoints (void) |
1042e4c0 SS |
15563 | { |
15564 | VEC(breakpoint_p) *tp_vec = 0; | |
15565 | struct breakpoint *tp; | |
15566 | ||
15567 | ALL_TRACEPOINTS (tp) | |
15568 | { | |
15569 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15570 | } | |
15571 | ||
15572 | return tp_vec; | |
15573 | } | |
15574 | ||
c906108c | 15575 | \f |
629500fa KS |
15576 | /* This help string is used to consolidate all the help string for specifying |
15577 | locations used by several commands. */ | |
15578 | ||
15579 | #define LOCATION_HELP_STRING \ | |
15580 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15581 | source filename, function name, label name, and line number.\n\ | |
15582 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15583 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15584 | \"factorial.c:fact:the_top\".\n\ | |
15585 | \n\ | |
15586 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15587 | program. Example: To specify the fourth byte past the start function\n\ | |
15588 | \"main\", use \"*main + 4\".\n\ | |
15589 | \n\ | |
15590 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15591 | syntax to specify location parameters.\n\ | |
15592 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15593 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
15594 | -function fact -label the_top\".\n" | |
15595 | ||
4a64f543 MS |
15596 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15597 | commands. It is defined as a macro to prevent duplication. | |
15598 | COMMAND should be a string constant containing the name of the | |
15599 | command. */ | |
629500fa | 15600 | |
31e2b00f | 15601 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15602 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15603 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15604 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15605 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15606 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15607 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15608 | below.\n\ | |
15609 | \n\ | |
dc10affe PA |
15610 | With no LOCATION, uses current execution address of the selected\n\ |
15611 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15612 | \n\ |
15613 | THREADNUM is the number from \"info threads\".\n\ | |
15614 | CONDITION is a boolean expression.\n\ | |
629500fa | 15615 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15616 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15617 | conditions are different.\n\ | |
31e2b00f AS |
15618 | \n\ |
15619 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15620 | ||
44feb3ce TT |
15621 | /* List of subcommands for "catch". */ |
15622 | static struct cmd_list_element *catch_cmdlist; | |
15623 | ||
15624 | /* List of subcommands for "tcatch". */ | |
15625 | static struct cmd_list_element *tcatch_cmdlist; | |
15626 | ||
9ac4176b | 15627 | void |
44feb3ce | 15628 | add_catch_command (char *name, char *docstring, |
82ae6c8d | 15629 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15630 | completer_ftype *completer, |
44feb3ce TT |
15631 | void *user_data_catch, |
15632 | void *user_data_tcatch) | |
15633 | { | |
15634 | struct cmd_list_element *command; | |
15635 | ||
15636 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15637 | &catch_cmdlist); | |
15638 | set_cmd_sfunc (command, sfunc); | |
15639 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15640 | set_cmd_completer (command, completer); |
44feb3ce TT |
15641 | |
15642 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15643 | &tcatch_cmdlist); | |
15644 | set_cmd_sfunc (command, sfunc); | |
15645 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15646 | set_cmd_completer (command, completer); |
44feb3ce TT |
15647 | } |
15648 | ||
6149aea9 PA |
15649 | static void |
15650 | save_command (char *arg, int from_tty) | |
15651 | { | |
3e43a32a MS |
15652 | printf_unfiltered (_("\"save\" must be followed by " |
15653 | "the name of a save subcommand.\n")); | |
635c7e8a | 15654 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15655 | } |
15656 | ||
84f4c1fe PM |
15657 | struct breakpoint * |
15658 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15659 | void *data) | |
15660 | { | |
35df4500 | 15661 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15662 | |
35df4500 | 15663 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15664 | { |
15665 | if ((*callback) (b, data)) | |
15666 | return b; | |
15667 | } | |
15668 | ||
15669 | return NULL; | |
15670 | } | |
15671 | ||
0574c78f GB |
15672 | /* Zero if any of the breakpoint's locations could be a location where |
15673 | functions have been inlined, nonzero otherwise. */ | |
15674 | ||
15675 | static int | |
15676 | is_non_inline_function (struct breakpoint *b) | |
15677 | { | |
15678 | /* The shared library event breakpoint is set on the address of a | |
15679 | non-inline function. */ | |
15680 | if (b->type == bp_shlib_event) | |
15681 | return 1; | |
15682 | ||
15683 | return 0; | |
15684 | } | |
15685 | ||
15686 | /* Nonzero if the specified PC cannot be a location where functions | |
15687 | have been inlined. */ | |
15688 | ||
15689 | int | |
09ac7c10 TT |
15690 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15691 | const struct target_waitstatus *ws) | |
0574c78f GB |
15692 | { |
15693 | struct breakpoint *b; | |
15694 | struct bp_location *bl; | |
15695 | ||
15696 | ALL_BREAKPOINTS (b) | |
15697 | { | |
15698 | if (!is_non_inline_function (b)) | |
15699 | continue; | |
15700 | ||
15701 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15702 | { | |
15703 | if (!bl->shlib_disabled | |
09ac7c10 | 15704 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15705 | return 1; |
15706 | } | |
15707 | } | |
15708 | ||
15709 | return 0; | |
15710 | } | |
15711 | ||
2f202fde JK |
15712 | /* Remove any references to OBJFILE which is going to be freed. */ |
15713 | ||
15714 | void | |
15715 | breakpoint_free_objfile (struct objfile *objfile) | |
15716 | { | |
15717 | struct bp_location **locp, *loc; | |
15718 | ||
15719 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15720 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15721 | loc->symtab = NULL; |
15722 | } | |
15723 | ||
2060206e PA |
15724 | void |
15725 | initialize_breakpoint_ops (void) | |
15726 | { | |
15727 | static int initialized = 0; | |
15728 | ||
15729 | struct breakpoint_ops *ops; | |
15730 | ||
15731 | if (initialized) | |
15732 | return; | |
15733 | initialized = 1; | |
15734 | ||
15735 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15736 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15737 | internal and momentary breakpoints, etc.). */ | |
15738 | ops = &bkpt_base_breakpoint_ops; | |
15739 | *ops = base_breakpoint_ops; | |
15740 | ops->re_set = bkpt_re_set; | |
15741 | ops->insert_location = bkpt_insert_location; | |
15742 | ops->remove_location = bkpt_remove_location; | |
15743 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15744 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15745 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15746 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15747 | |
15748 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15749 | ops = &bkpt_breakpoint_ops; | |
15750 | *ops = bkpt_base_breakpoint_ops; | |
15751 | ops->re_set = bkpt_re_set; | |
15752 | ops->resources_needed = bkpt_resources_needed; | |
15753 | ops->print_it = bkpt_print_it; | |
15754 | ops->print_mention = bkpt_print_mention; | |
15755 | ops->print_recreate = bkpt_print_recreate; | |
15756 | ||
15757 | /* Ranged breakpoints. */ | |
15758 | ops = &ranged_breakpoint_ops; | |
15759 | *ops = bkpt_breakpoint_ops; | |
15760 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15761 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15762 | ops->print_it = print_it_ranged_breakpoint; | |
15763 | ops->print_one = print_one_ranged_breakpoint; | |
15764 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15765 | ops->print_mention = print_mention_ranged_breakpoint; | |
15766 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15767 | ||
15768 | /* Internal breakpoints. */ | |
15769 | ops = &internal_breakpoint_ops; | |
15770 | *ops = bkpt_base_breakpoint_ops; | |
15771 | ops->re_set = internal_bkpt_re_set; | |
15772 | ops->check_status = internal_bkpt_check_status; | |
15773 | ops->print_it = internal_bkpt_print_it; | |
15774 | ops->print_mention = internal_bkpt_print_mention; | |
15775 | ||
15776 | /* Momentary breakpoints. */ | |
15777 | ops = &momentary_breakpoint_ops; | |
15778 | *ops = bkpt_base_breakpoint_ops; | |
15779 | ops->re_set = momentary_bkpt_re_set; | |
15780 | ops->check_status = momentary_bkpt_check_status; | |
15781 | ops->print_it = momentary_bkpt_print_it; | |
15782 | ops->print_mention = momentary_bkpt_print_mention; | |
15783 | ||
e2e4d78b JK |
15784 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15785 | ops = &longjmp_breakpoint_ops; | |
15786 | *ops = momentary_breakpoint_ops; | |
15787 | ops->dtor = longjmp_bkpt_dtor; | |
15788 | ||
55aa24fb SDJ |
15789 | /* Probe breakpoints. */ |
15790 | ops = &bkpt_probe_breakpoint_ops; | |
15791 | *ops = bkpt_breakpoint_ops; | |
15792 | ops->insert_location = bkpt_probe_insert_location; | |
15793 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15794 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15795 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15796 | |
2060206e PA |
15797 | /* Watchpoints. */ |
15798 | ops = &watchpoint_breakpoint_ops; | |
15799 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15800 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15801 | ops->re_set = re_set_watchpoint; |
15802 | ops->insert_location = insert_watchpoint; | |
15803 | ops->remove_location = remove_watchpoint; | |
15804 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15805 | ops->check_status = check_status_watchpoint; | |
15806 | ops->resources_needed = resources_needed_watchpoint; | |
15807 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15808 | ops->print_it = print_it_watchpoint; | |
15809 | ops->print_mention = print_mention_watchpoint; | |
15810 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15811 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15812 | |
15813 | /* Masked watchpoints. */ | |
15814 | ops = &masked_watchpoint_breakpoint_ops; | |
15815 | *ops = watchpoint_breakpoint_ops; | |
15816 | ops->insert_location = insert_masked_watchpoint; | |
15817 | ops->remove_location = remove_masked_watchpoint; | |
15818 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15819 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15820 | ops->print_it = print_it_masked_watchpoint; | |
15821 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15822 | ops->print_mention = print_mention_masked_watchpoint; | |
15823 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15824 | ||
15825 | /* Tracepoints. */ | |
15826 | ops = &tracepoint_breakpoint_ops; | |
15827 | *ops = base_breakpoint_ops; | |
15828 | ops->re_set = tracepoint_re_set; | |
15829 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15830 | ops->print_one_detail = tracepoint_print_one_detail; | |
15831 | ops->print_mention = tracepoint_print_mention; | |
15832 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15833 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15834 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15835 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15836 | |
55aa24fb SDJ |
15837 | /* Probe tracepoints. */ |
15838 | ops = &tracepoint_probe_breakpoint_ops; | |
15839 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15840 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15841 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15842 | |
983af33b SDJ |
15843 | /* Static tracepoints with marker (`-m'). */ |
15844 | ops = &strace_marker_breakpoint_ops; | |
15845 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15846 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15847 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15848 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15849 | |
15850 | /* Fork catchpoints. */ | |
15851 | ops = &catch_fork_breakpoint_ops; | |
15852 | *ops = base_breakpoint_ops; | |
15853 | ops->insert_location = insert_catch_fork; | |
15854 | ops->remove_location = remove_catch_fork; | |
15855 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15856 | ops->print_it = print_it_catch_fork; | |
15857 | ops->print_one = print_one_catch_fork; | |
15858 | ops->print_mention = print_mention_catch_fork; | |
15859 | ops->print_recreate = print_recreate_catch_fork; | |
15860 | ||
15861 | /* Vfork catchpoints. */ | |
15862 | ops = &catch_vfork_breakpoint_ops; | |
15863 | *ops = base_breakpoint_ops; | |
15864 | ops->insert_location = insert_catch_vfork; | |
15865 | ops->remove_location = remove_catch_vfork; | |
15866 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15867 | ops->print_it = print_it_catch_vfork; | |
15868 | ops->print_one = print_one_catch_vfork; | |
15869 | ops->print_mention = print_mention_catch_vfork; | |
15870 | ops->print_recreate = print_recreate_catch_vfork; | |
15871 | ||
15872 | /* Exec catchpoints. */ | |
15873 | ops = &catch_exec_breakpoint_ops; | |
15874 | *ops = base_breakpoint_ops; | |
15875 | ops->dtor = dtor_catch_exec; | |
15876 | ops->insert_location = insert_catch_exec; | |
15877 | ops->remove_location = remove_catch_exec; | |
15878 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15879 | ops->print_it = print_it_catch_exec; | |
15880 | ops->print_one = print_one_catch_exec; | |
15881 | ops->print_mention = print_mention_catch_exec; | |
15882 | ops->print_recreate = print_recreate_catch_exec; | |
15883 | ||
edcc5120 TT |
15884 | /* Solib-related catchpoints. */ |
15885 | ops = &catch_solib_breakpoint_ops; | |
15886 | *ops = base_breakpoint_ops; | |
15887 | ops->dtor = dtor_catch_solib; | |
15888 | ops->insert_location = insert_catch_solib; | |
15889 | ops->remove_location = remove_catch_solib; | |
15890 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15891 | ops->check_status = check_status_catch_solib; | |
15892 | ops->print_it = print_it_catch_solib; | |
15893 | ops->print_one = print_one_catch_solib; | |
15894 | ops->print_mention = print_mention_catch_solib; | |
15895 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15896 | |
15897 | ops = &dprintf_breakpoint_ops; | |
15898 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15899 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15900 | ops->resources_needed = bkpt_resources_needed; |
15901 | ops->print_it = bkpt_print_it; | |
15902 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15903 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15904 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15905 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15906 | } |
15907 | ||
8bfd80db YQ |
15908 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15909 | ||
15910 | static struct cmd_list_element *enablebreaklist = NULL; | |
15911 | ||
c906108c | 15912 | void |
fba45db2 | 15913 | _initialize_breakpoint (void) |
c906108c SS |
15914 | { |
15915 | struct cmd_list_element *c; | |
15916 | ||
2060206e PA |
15917 | initialize_breakpoint_ops (); |
15918 | ||
84acb35a | 15919 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15920 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15921 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15922 | |
55aa24fb SDJ |
15923 | breakpoint_objfile_key |
15924 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15925 | |
c906108c SS |
15926 | breakpoint_chain = 0; |
15927 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15928 | before a breakpoint is set. */ | |
15929 | breakpoint_count = 0; | |
15930 | ||
1042e4c0 SS |
15931 | tracepoint_count = 0; |
15932 | ||
1bedd215 AC |
15933 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15934 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15935 | Usage is `ignore N COUNT'.")); | |
c906108c | 15936 | |
1bedd215 AC |
15937 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15938 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15939 | Give breakpoint number as argument after \"commands\".\n\ |
15940 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15941 | The commands themselves follow starting on the next line.\n\ | |
15942 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15943 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15944 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15945 | |
d55637df | 15946 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15947 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15948 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15949 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15950 | set_cmd_completer (c, condition_completer); |
c906108c | 15951 | |
1bedd215 | 15952 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15953 | Set a temporary breakpoint.\n\ |
c906108c SS |
15954 | Like \"break\" except the breakpoint is only temporary,\n\ |
15955 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15956 | by using \"enable delete\" on the breakpoint number.\n\ |
15957 | \n" | |
15958 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15959 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15960 | |
1bedd215 | 15961 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15962 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15963 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15964 | some target hardware may not have this support.\n\ |
15965 | \n" | |
15966 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15967 | set_cmd_completer (c, location_completer); |
c906108c | 15968 | |
1bedd215 | 15969 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15970 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15971 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15972 | so it will be deleted when hit.\n\ |
15973 | \n" | |
15974 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15975 | set_cmd_completer (c, location_completer); |
c906108c | 15976 | |
1bedd215 AC |
15977 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15978 | Enable some breakpoints.\n\ | |
c906108c SS |
15979 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15980 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15981 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15982 | With a subcommand you can enable temporarily."), |
c906108c | 15983 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15984 | |
15985 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15986 | ||
84951ab5 | 15987 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15988 | Enable some breakpoints.\n\ |
c906108c SS |
15989 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15990 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15991 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15992 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15993 | |
1a966eab AC |
15994 | add_cmd ("once", no_class, enable_once_command, _("\ |
15995 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15996 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15997 | &enablebreaklist); |
15998 | ||
1a966eab AC |
15999 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16000 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16001 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16002 | &enablebreaklist); |
16003 | ||
816338b5 SS |
16004 | add_cmd ("count", no_class, enable_count_command, _("\ |
16005 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16006 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16007 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16008 | &enablebreaklist); | |
16009 | ||
1a966eab AC |
16010 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16011 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16012 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16013 | &enablelist); |
16014 | ||
1a966eab AC |
16015 | add_cmd ("once", no_class, enable_once_command, _("\ |
16016 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16017 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16018 | &enablelist); |
16019 | ||
16020 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16021 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16022 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16023 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16024 | &enablelist); |
16025 | ||
1bedd215 AC |
16026 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16027 | Disable some breakpoints.\n\ | |
c906108c SS |
16028 | Arguments are breakpoint numbers with spaces in between.\n\ |
16029 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16030 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16031 | &disablelist, "disable ", 1, &cmdlist); |
16032 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16033 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 16034 | |
1a966eab AC |
16035 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16036 | Disable some breakpoints.\n\ | |
c906108c SS |
16037 | Arguments are breakpoint numbers with spaces in between.\n\ |
16038 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16039 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16040 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16041 | &disablelist); |
16042 | ||
1bedd215 AC |
16043 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16044 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16045 | Arguments are breakpoint numbers with spaces in between.\n\ |
16046 | To delete all breakpoints, give no argument.\n\ | |
16047 | \n\ | |
16048 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16049 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16050 | &deletelist, "delete ", 1, &cmdlist); |
16051 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16052 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16053 | |
1a966eab AC |
16054 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16055 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16056 | Arguments are breakpoint numbers with spaces in between.\n\ |
16057 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16058 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16059 | &deletelist); |
16060 | ||
1bedd215 | 16061 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
16062 | Clear breakpoint at specified location.\n\ |
16063 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
16064 | \n\ |
16065 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
16066 | is executing in.\n" |
16067 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 16068 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16069 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16070 | |
1bedd215 | 16071 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 16072 | Set breakpoint at specified location.\n" |
31e2b00f | 16073 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 16074 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16075 | |
c906108c SS |
16076 | add_com_alias ("b", "break", class_run, 1); |
16077 | add_com_alias ("br", "break", class_run, 1); | |
16078 | add_com_alias ("bre", "break", class_run, 1); | |
16079 | add_com_alias ("brea", "break", class_run, 1); | |
16080 | ||
c906108c SS |
16081 | if (dbx_commands) |
16082 | { | |
1bedd215 AC |
16083 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16084 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16085 | &stoplist, "stop ", 1, &cmdlist); |
16086 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16087 | _("Break in function or address."), &stoplist); |
c5aa993b | 16088 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16089 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16090 | add_com ("status", class_info, breakpoints_info, _("\ |
16091 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16092 | The \"Type\" column indicates one of:\n\ |
16093 | \tbreakpoint - normal breakpoint\n\ | |
16094 | \twatchpoint - watchpoint\n\ | |
16095 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16096 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16097 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16098 | address and file/line number respectively.\n\ |
16099 | \n\ | |
16100 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16101 | are set to the address of the last breakpoint listed unless the command\n\ |
16102 | is prefixed with \"server \".\n\n\ | |
c906108c | 16103 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16104 | breakpoint set.")); |
c906108c SS |
16105 | } |
16106 | ||
1bedd215 | 16107 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16108 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16109 | The \"Type\" column indicates one of:\n\ |
16110 | \tbreakpoint - normal breakpoint\n\ | |
16111 | \twatchpoint - watchpoint\n\ | |
16112 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16113 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16114 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16115 | address and file/line number respectively.\n\ |
16116 | \n\ | |
16117 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16118 | are set to the address of the last breakpoint listed unless the command\n\ |
16119 | is prefixed with \"server \".\n\n\ | |
c906108c | 16120 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16121 | breakpoint set.")); |
c906108c | 16122 | |
6b04bdb7 MS |
16123 | add_info_alias ("b", "breakpoints", 1); |
16124 | ||
1a966eab AC |
16125 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16126 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16127 | The \"Type\" column indicates one of:\n\ |
16128 | \tbreakpoint - normal breakpoint\n\ | |
16129 | \twatchpoint - watchpoint\n\ | |
16130 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16131 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16132 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16133 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16134 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16135 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16136 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16137 | address and file/line number respectively.\n\ |
16138 | \n\ | |
16139 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16140 | are set to the address of the last breakpoint listed unless the command\n\ |
16141 | is prefixed with \"server \".\n\n\ | |
c906108c | 16142 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16143 | breakpoint set."), |
c906108c SS |
16144 | &maintenanceinfolist); |
16145 | ||
44feb3ce TT |
16146 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16147 | Set catchpoints to catch events."), | |
16148 | &catch_cmdlist, "catch ", | |
16149 | 0/*allow-unknown*/, &cmdlist); | |
16150 | ||
16151 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16152 | Set temporary catchpoints to catch events."), | |
16153 | &tcatch_cmdlist, "tcatch ", | |
16154 | 0/*allow-unknown*/, &cmdlist); | |
16155 | ||
44feb3ce TT |
16156 | add_catch_command ("fork", _("Catch calls to fork."), |
16157 | catch_fork_command_1, | |
a96d9b2e | 16158 | NULL, |
44feb3ce TT |
16159 | (void *) (uintptr_t) catch_fork_permanent, |
16160 | (void *) (uintptr_t) catch_fork_temporary); | |
16161 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16162 | catch_fork_command_1, | |
a96d9b2e | 16163 | NULL, |
44feb3ce TT |
16164 | (void *) (uintptr_t) catch_vfork_permanent, |
16165 | (void *) (uintptr_t) catch_vfork_temporary); | |
16166 | add_catch_command ("exec", _("Catch calls to exec."), | |
16167 | catch_exec_command_1, | |
a96d9b2e SDJ |
16168 | NULL, |
16169 | CATCH_PERMANENT, | |
16170 | CATCH_TEMPORARY); | |
edcc5120 TT |
16171 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16172 | Usage: catch load [REGEX]\n\ | |
16173 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16174 | catch_load_command_1, | |
16175 | NULL, | |
16176 | CATCH_PERMANENT, | |
16177 | CATCH_TEMPORARY); | |
16178 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16179 | Usage: catch unload [REGEX]\n\ | |
16180 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16181 | catch_unload_command_1, | |
16182 | NULL, | |
16183 | CATCH_PERMANENT, | |
16184 | CATCH_TEMPORARY); | |
c5aa993b | 16185 | |
1bedd215 AC |
16186 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16187 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16188 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16189 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16190 | an expression changes.\n\ |
16191 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16192 | the memory to which it refers.")); | |
65d12d83 | 16193 | set_cmd_completer (c, expression_completer); |
c906108c | 16194 | |
1bedd215 AC |
16195 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16196 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16197 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16198 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16199 | an expression is read.\n\ |
16200 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16201 | the memory to which it refers.")); | |
65d12d83 | 16202 | set_cmd_completer (c, expression_completer); |
c906108c | 16203 | |
1bedd215 AC |
16204 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16205 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16206 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16207 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16208 | an expression is either read or written.\n\ |
16209 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16210 | the memory to which it refers.")); | |
65d12d83 | 16211 | set_cmd_completer (c, expression_completer); |
c906108c | 16212 | |
d77f58be | 16213 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16214 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16215 | |
920d2a44 AC |
16216 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16217 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16218 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16219 | &can_use_hw_watchpoints, _("\ | |
16220 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16221 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16222 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16223 | such is available. (However, any hardware watchpoints that were\n\ | |
16224 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16225 | hardware.)"), |
16226 | NULL, | |
920d2a44 | 16227 | show_can_use_hw_watchpoints, |
85c07804 | 16228 | &setlist, &showlist); |
c906108c SS |
16229 | |
16230 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16231 | |
1042e4c0 SS |
16232 | /* Tracepoint manipulation commands. */ |
16233 | ||
16234 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 16235 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
16236 | \n" |
16237 | BREAK_ARGS_HELP ("trace") "\n\ | |
16238 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16239 | set_cmd_completer (c, location_completer); | |
16240 | ||
16241 | add_com_alias ("tp", "trace", class_alias, 0); | |
16242 | add_com_alias ("tr", "trace", class_alias, 1); | |
16243 | add_com_alias ("tra", "trace", class_alias, 1); | |
16244 | add_com_alias ("trac", "trace", class_alias, 1); | |
16245 | ||
7a697b8d | 16246 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 16247 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
16248 | \n" |
16249 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16250 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16251 | set_cmd_completer (c, location_completer); | |
16252 | ||
0fb4aa4b | 16253 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 16254 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
16255 | \n\ |
16256 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
16257 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
16258 | or -m MARKER_ID.\n\n\ | |
16259 | If a marker id is specified, probe the marker with that name. With\n\ | |
16260 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
16261 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
16262 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16263 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16264 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16265 | \n\ | |
16266 | CONDITION is a boolean expression.\n\ | |
629500fa | 16267 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
16268 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16269 | conditions are different.\n\ | |
0fb4aa4b PA |
16270 | \n\ |
16271 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16272 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16273 | set_cmd_completer (c, location_completer); | |
16274 | ||
1042e4c0 | 16275 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16276 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16277 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16278 | last tracepoint set.")); | |
16279 | ||
16280 | add_info_alias ("tp", "tracepoints", 1); | |
16281 | ||
16282 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16283 | Delete specified tracepoints.\n\ | |
16284 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16285 | No argument means delete all tracepoints."), | |
16286 | &deletelist); | |
7e20dfcd | 16287 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16288 | |
16289 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16290 | Disable specified tracepoints.\n\ | |
16291 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16292 | No argument means disable all tracepoints."), | |
16293 | &disablelist); | |
16294 | deprecate_cmd (c, "disable"); | |
16295 | ||
16296 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16297 | Enable specified tracepoints.\n\ | |
16298 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16299 | No argument means enable all tracepoints."), | |
16300 | &enablelist); | |
16301 | deprecate_cmd (c, "enable"); | |
16302 | ||
16303 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16304 | Set the passcount for a tracepoint.\n\ | |
16305 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16306 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16307 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16308 | ||
6149aea9 PA |
16309 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16310 | _("Save breakpoint definitions as a script."), | |
16311 | &save_cmdlist, "save ", | |
16312 | 0/*allow-unknown*/, &cmdlist); | |
16313 | ||
16314 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16315 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16316 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16317 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16318 | session to restore them."), | |
16319 | &save_cmdlist); | |
16320 | set_cmd_completer (c, filename_completer); | |
16321 | ||
16322 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16323 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16324 | Use the 'source' command in another debug session to restore them."), |
16325 | &save_cmdlist); | |
1042e4c0 SS |
16326 | set_cmd_completer (c, filename_completer); |
16327 | ||
6149aea9 PA |
16328 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16329 | deprecate_cmd (c, "save tracepoints"); | |
16330 | ||
1bedd215 | 16331 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16332 | Breakpoint specific settings\n\ |
16333 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16334 | pending breakpoint behavior"), |
fa8d40ab JJ |
16335 | &breakpoint_set_cmdlist, "set breakpoint ", |
16336 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16337 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16338 | Breakpoint specific settings\n\ |
16339 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16340 | pending breakpoint behavior"), |
fa8d40ab JJ |
16341 | &breakpoint_show_cmdlist, "show breakpoint ", |
16342 | 0/*allow-unknown*/, &showlist); | |
16343 | ||
7915a72c AC |
16344 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16345 | &pending_break_support, _("\ | |
16346 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16347 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16348 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16349 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16350 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16351 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16352 | NULL, |
920d2a44 | 16353 | show_pending_break_support, |
6e1d7d6c AC |
16354 | &breakpoint_set_cmdlist, |
16355 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16356 | |
16357 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16358 | |
16359 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16360 | &automatic_hardware_breakpoints, _("\ | |
16361 | Set automatic usage of hardware breakpoints."), _("\ | |
16362 | Show automatic usage of hardware breakpoints."), _("\ | |
16363 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16364 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16365 | a warning will be emitted for such breakpoints."), | |
16366 | NULL, | |
16367 | show_automatic_hardware_breakpoints, | |
16368 | &breakpoint_set_cmdlist, | |
16369 | &breakpoint_show_cmdlist); | |
74960c60 | 16370 | |
a25a5a45 PA |
16371 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16372 | &always_inserted_mode, _("\ | |
74960c60 VP |
16373 | Set mode for inserting breakpoints."), _("\ |
16374 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16375 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16376 | they're created, kept inserted even when execution stops, and removed\n\ | |
16377 | only when the user deletes them. When this mode is off (the default),\n\ | |
16378 | breakpoints are inserted only when execution continues, and removed\n\ | |
16379 | when execution stops."), | |
72d0e2c5 YQ |
16380 | NULL, |
16381 | &show_always_inserted_mode, | |
16382 | &breakpoint_set_cmdlist, | |
16383 | &breakpoint_show_cmdlist); | |
f1310107 | 16384 | |
b775012e LM |
16385 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16386 | condition_evaluation_enums, | |
16387 | &condition_evaluation_mode_1, _("\ | |
16388 | Set mode of breakpoint condition evaluation."), _("\ | |
16389 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16390 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16391 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16392 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16393 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16394 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16395 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16396 | be set to \"gdb\""), | |
16397 | &set_condition_evaluation_mode, | |
16398 | &show_condition_evaluation_mode, | |
16399 | &breakpoint_set_cmdlist, | |
16400 | &breakpoint_show_cmdlist); | |
16401 | ||
f1310107 TJB |
16402 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16403 | Set a breakpoint for an address range.\n\ | |
16404 | break-range START-LOCATION, END-LOCATION\n\ | |
16405 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16406 | LINENUM, for that line in the current file,\n\ | |
16407 | FILE:LINENUM, for that line in that file,\n\ | |
16408 | +OFFSET, for that number of lines after the current line\n\ | |
16409 | or the start of the range\n\ | |
16410 | FUNCTION, for the first line in that function,\n\ | |
16411 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16412 | *ADDRESS, for the instruction at that address.\n\ | |
16413 | \n\ | |
16414 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16415 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16416 | range (including START-LOCATION and END-LOCATION).")); | |
16417 | ||
e7e0cddf | 16418 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16419 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16420 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16421 | location may be a linespec, explicit, or address location.\n" |
16422 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16423 | set_cmd_completer (c, location_completer); |
16424 | ||
16425 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16426 | dprintf_style_enums, &dprintf_style, _("\ | |
16427 | Set the style of usage for dynamic printf."), _("\ | |
16428 | Show the style of usage for dynamic printf."), _("\ | |
16429 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16430 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16431 | console, as with the \"printf\" command.\n\ | |
16432 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16433 | program; by default printf(), but you can choose a different function or\n\ | |
16434 | output stream by setting dprintf-function and dprintf-channel."), | |
16435 | update_dprintf_commands, NULL, | |
16436 | &setlist, &showlist); | |
16437 | ||
16438 | dprintf_function = xstrdup ("printf"); | |
16439 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16440 | &dprintf_function, _("\ | |
16441 | Set the function to use for dynamic printf"), _("\ | |
16442 | Show the function to use for dynamic printf"), NULL, | |
16443 | update_dprintf_commands, NULL, | |
16444 | &setlist, &showlist); | |
16445 | ||
16446 | dprintf_channel = xstrdup (""); | |
16447 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16448 | &dprintf_channel, _("\ | |
16449 | Set the channel to use for dynamic printf"), _("\ | |
16450 | Show the channel to use for dynamic printf"), NULL, | |
16451 | update_dprintf_commands, NULL, | |
16452 | &setlist, &showlist); | |
16453 | ||
d3ce09f5 SS |
16454 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16455 | &disconnected_dprintf, _("\ | |
16456 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16457 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16458 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16459 | even if GDB disconnects or detaches from the target."), | |
16460 | NULL, | |
16461 | NULL, | |
16462 | &setlist, &showlist); | |
16463 | ||
16464 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16465 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16466 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16467 | ||
765dc015 | 16468 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16469 | |
16470 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16471 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16472 | } |