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; | |
f00aae0f | 3427 | char *p; |
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); | |
f00aae0f KS |
3452 | p = ASTRDUP (func_name); |
3453 | b->location = new_linespec_location (&p); | |
e62c965a | 3454 | |
69de3c6a PP |
3455 | if (overlay_debugging == ovly_auto) |
3456 | { | |
3457 | b->enable_state = bp_enabled; | |
3458 | overlay_events_enabled = 1; | |
3459 | } | |
3460 | else | |
3461 | { | |
3462 | b->enable_state = bp_disabled; | |
3463 | overlay_events_enabled = 0; | |
3464 | } | |
e62c965a | 3465 | } |
44702360 | 3466 | update_global_location_list (UGLL_MAY_INSERT); |
e62c965a PP |
3467 | } |
3468 | ||
0fd8e87f | 3469 | static void |
af02033e | 3470 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3471 | { |
6c95b8df | 3472 | struct program_space *pspace; |
6c95b8df PA |
3473 | struct cleanup *old_chain; |
3474 | ||
3475 | old_chain = save_current_program_space (); | |
0fd8e87f | 3476 | |
6c95b8df | 3477 | ALL_PSPACES (pspace) |
af02033e PP |
3478 | { |
3479 | struct objfile *objfile; | |
3480 | ||
3481 | set_current_program_space (pspace); | |
3482 | ||
3483 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3484 | { |
af02033e PP |
3485 | int i; |
3486 | struct gdbarch *gdbarch; | |
17450429 | 3487 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3488 | |
af02033e | 3489 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3490 | |
17450429 PP |
3491 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3492 | ||
28106bc2 SDJ |
3493 | if (!bp_objfile_data->longjmp_searched) |
3494 | { | |
25f9533e SDJ |
3495 | VEC (probe_p) *ret; |
3496 | ||
3497 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3498 | if (ret != NULL) | |
3499 | { | |
3500 | /* We are only interested in checking one element. */ | |
3501 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3502 | ||
3503 | if (!can_evaluate_probe_arguments (p)) | |
3504 | { | |
3505 | /* We cannot use the probe interface here, because it does | |
3506 | not know how to evaluate arguments. */ | |
3507 | VEC_free (probe_p, ret); | |
3508 | ret = NULL; | |
3509 | } | |
3510 | } | |
3511 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3512 | bp_objfile_data->longjmp_searched = 1; |
3513 | } | |
3514 | ||
3515 | if (bp_objfile_data->longjmp_probes != NULL) | |
3516 | { | |
3517 | int i; | |
3518 | struct probe *probe; | |
3519 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3520 | ||
3521 | for (i = 0; | |
3522 | VEC_iterate (probe_p, | |
3523 | bp_objfile_data->longjmp_probes, | |
3524 | i, probe); | |
3525 | ++i) | |
3526 | { | |
3527 | struct breakpoint *b; | |
3528 | ||
729662a5 TT |
3529 | b = create_internal_breakpoint (gdbarch, |
3530 | get_probe_address (probe, | |
3531 | objfile), | |
28106bc2 SDJ |
3532 | bp_longjmp_master, |
3533 | &internal_breakpoint_ops); | |
5b56227b KS |
3534 | b->location |
3535 | = new_probe_location ("-probe-stap libc:longjmp"); | |
28106bc2 SDJ |
3536 | b->enable_state = bp_disabled; |
3537 | } | |
3538 | ||
3539 | continue; | |
3540 | } | |
3541 | ||
0569175e TSD |
3542 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3543 | continue; | |
3544 | ||
17450429 | 3545 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3546 | { |
3547 | struct breakpoint *b; | |
af02033e | 3548 | const char *func_name; |
17450429 | 3549 | CORE_ADDR addr; |
f00aae0f | 3550 | char *p; |
6c95b8df | 3551 | |
3b7344d5 | 3552 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3553 | continue; |
0fd8e87f | 3554 | |
17450429 | 3555 | func_name = longjmp_names[i]; |
3b7344d5 | 3556 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3557 | { |
3b7344d5 | 3558 | struct bound_minimal_symbol m; |
17450429 PP |
3559 | |
3560 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3561 | if (m.minsym == NULL) |
17450429 PP |
3562 | { |
3563 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3564 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3565 | continue; |
3566 | } | |
3567 | bp_objfile_data->longjmp_msym[i] = m; | |
3568 | } | |
3569 | ||
77e371c0 | 3570 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3571 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3572 | &internal_breakpoint_ops); | |
f00aae0f KS |
3573 | p = ASTRDUP (func_name); |
3574 | b->location = new_linespec_location (&p); | |
af02033e PP |
3575 | b->enable_state = bp_disabled; |
3576 | } | |
0fd8e87f | 3577 | } |
af02033e | 3578 | } |
44702360 | 3579 | update_global_location_list (UGLL_MAY_INSERT); |
6c95b8df PA |
3580 | |
3581 | do_cleanups (old_chain); | |
0fd8e87f UW |
3582 | } |
3583 | ||
af02033e | 3584 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3585 | static void |
af02033e | 3586 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3587 | { |
3588 | struct program_space *pspace; | |
aa7d318d | 3589 | struct cleanup *old_chain; |
af02033e | 3590 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3591 | |
3592 | old_chain = save_current_program_space (); | |
3593 | ||
3594 | ALL_PSPACES (pspace) | |
17450429 PP |
3595 | { |
3596 | struct objfile *objfile; | |
3597 | CORE_ADDR addr; | |
3598 | ||
3599 | set_current_program_space (pspace); | |
3600 | ||
aa7d318d TT |
3601 | ALL_OBJFILES (objfile) |
3602 | { | |
3603 | struct breakpoint *b; | |
17450429 | 3604 | struct breakpoint_objfile_data *bp_objfile_data; |
f00aae0f | 3605 | char *p; |
aa7d318d | 3606 | |
17450429 | 3607 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3608 | |
3b7344d5 | 3609 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3610 | continue; |
3611 | ||
3b7344d5 | 3612 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3613 | { |
3b7344d5 | 3614 | struct bound_minimal_symbol m; |
17450429 PP |
3615 | |
3616 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3617 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3618 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3619 | { |
3620 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3621 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3622 | continue; |
3623 | } | |
3624 | bp_objfile_data->terminate_msym = m; | |
3625 | } | |
aa7d318d | 3626 | |
77e371c0 | 3627 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3628 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3629 | bp_std_terminate_master, |
3630 | &internal_breakpoint_ops); | |
f00aae0f KS |
3631 | p = ASTRDUP (func_name); |
3632 | b->location = new_linespec_location (&p); | |
aa7d318d TT |
3633 | b->enable_state = bp_disabled; |
3634 | } | |
17450429 PP |
3635 | } |
3636 | ||
44702360 | 3637 | update_global_location_list (UGLL_MAY_INSERT); |
aa7d318d TT |
3638 | |
3639 | do_cleanups (old_chain); | |
3640 | } | |
3641 | ||
186c406b TT |
3642 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3643 | ||
70221824 | 3644 | static void |
186c406b TT |
3645 | create_exception_master_breakpoint (void) |
3646 | { | |
3647 | struct objfile *objfile; | |
17450429 | 3648 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3649 | |
3650 | ALL_OBJFILES (objfile) | |
3651 | { | |
17450429 PP |
3652 | struct breakpoint *b; |
3653 | struct gdbarch *gdbarch; | |
3654 | struct breakpoint_objfile_data *bp_objfile_data; | |
3655 | CORE_ADDR addr; | |
f00aae0f | 3656 | char *p; |
17450429 PP |
3657 | |
3658 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3659 | ||
28106bc2 SDJ |
3660 | /* We prefer the SystemTap probe point if it exists. */ |
3661 | if (!bp_objfile_data->exception_searched) | |
3662 | { | |
25f9533e SDJ |
3663 | VEC (probe_p) *ret; |
3664 | ||
3665 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3666 | ||
3667 | if (ret != NULL) | |
3668 | { | |
3669 | /* We are only interested in checking one element. */ | |
3670 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3671 | ||
3672 | if (!can_evaluate_probe_arguments (p)) | |
3673 | { | |
3674 | /* We cannot use the probe interface here, because it does | |
3675 | not know how to evaluate arguments. */ | |
3676 | VEC_free (probe_p, ret); | |
3677 | ret = NULL; | |
3678 | } | |
3679 | } | |
3680 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3681 | bp_objfile_data->exception_searched = 1; |
3682 | } | |
3683 | ||
3684 | if (bp_objfile_data->exception_probes != NULL) | |
3685 | { | |
3686 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3687 | int i; | |
3688 | struct probe *probe; | |
3689 | ||
3690 | for (i = 0; | |
3691 | VEC_iterate (probe_p, | |
3692 | bp_objfile_data->exception_probes, | |
3693 | i, probe); | |
3694 | ++i) | |
3695 | { | |
3696 | struct breakpoint *b; | |
3697 | ||
729662a5 TT |
3698 | b = create_internal_breakpoint (gdbarch, |
3699 | get_probe_address (probe, | |
3700 | objfile), | |
28106bc2 SDJ |
3701 | bp_exception_master, |
3702 | &internal_breakpoint_ops); | |
5b56227b KS |
3703 | b->location |
3704 | = new_probe_location ("-probe-stap libgcc:unwind"); | |
28106bc2 SDJ |
3705 | b->enable_state = bp_disabled; |
3706 | } | |
3707 | ||
3708 | continue; | |
3709 | } | |
3710 | ||
3711 | /* Otherwise, try the hook function. */ | |
3712 | ||
3b7344d5 | 3713 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3714 | continue; |
3715 | ||
3716 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3717 | |
3b7344d5 | 3718 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3719 | { |
3b7344d5 | 3720 | struct bound_minimal_symbol debug_hook; |
186c406b | 3721 | |
17450429 | 3722 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3723 | if (debug_hook.minsym == NULL) |
17450429 | 3724 | { |
3b7344d5 | 3725 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3726 | continue; |
3727 | } | |
3728 | ||
3729 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3730 | } |
17450429 | 3731 | |
77e371c0 | 3732 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3733 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3734 | ¤t_target); | |
06edf0c0 PA |
3735 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3736 | &internal_breakpoint_ops); | |
f00aae0f KS |
3737 | p = ASTRDUP (func_name); |
3738 | b->location = new_linespec_location (&p); | |
17450429 | 3739 | b->enable_state = bp_disabled; |
186c406b TT |
3740 | } |
3741 | ||
44702360 | 3742 | update_global_location_list (UGLL_MAY_INSERT); |
186c406b TT |
3743 | } |
3744 | ||
c906108c | 3745 | void |
fba45db2 | 3746 | update_breakpoints_after_exec (void) |
c906108c | 3747 | { |
35df4500 | 3748 | struct breakpoint *b, *b_tmp; |
876fa593 | 3749 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3750 | |
25b22b0a PA |
3751 | /* We're about to delete breakpoints from GDB's lists. If the |
3752 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3753 | writing the breakpoints' "shadow contents" back into memory. The | |
3754 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3755 | do that. Instead, the target is responsible from marking | |
3756 | breakpoints out as soon as it detects an exec. We don't do that | |
3757 | here instead, because there may be other attempts to delete | |
3758 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3759 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3760 | if (bploc->pspace == current_program_space) |
3761 | gdb_assert (!bploc->inserted); | |
c906108c | 3762 | |
35df4500 | 3763 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3764 | { |
6c95b8df PA |
3765 | if (b->pspace != current_program_space) |
3766 | continue; | |
3767 | ||
4a64f543 | 3768 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3769 | if (b->type == bp_shlib_event) |
3770 | { | |
3771 | delete_breakpoint (b); | |
3772 | continue; | |
3773 | } | |
c906108c | 3774 | |
4a64f543 | 3775 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3776 | if (b->type == bp_jit_event) |
3777 | { | |
3778 | delete_breakpoint (b); | |
3779 | continue; | |
3780 | } | |
3781 | ||
1900040c | 3782 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3783 | as must overlay event and longjmp master breakpoints. */ |
3784 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3785 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3786 | || b->type == bp_exception_master) | |
c4093a6a JM |
3787 | { |
3788 | delete_breakpoint (b); | |
3789 | continue; | |
3790 | } | |
3791 | ||
4a64f543 | 3792 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3793 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3794 | { |
3795 | delete_breakpoint (b); | |
3796 | continue; | |
3797 | } | |
3798 | ||
7c16b83e PA |
3799 | /* Just like single-step breakpoints. */ |
3800 | if (b->type == bp_single_step) | |
3801 | { | |
3802 | delete_breakpoint (b); | |
3803 | continue; | |
3804 | } | |
3805 | ||
611c83ae PA |
3806 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3807 | after an exec. */ | |
186c406b | 3808 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3809 | || b->type == bp_longjmp_call_dummy |
186c406b | 3810 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3811 | { |
3812 | delete_breakpoint (b); | |
3813 | continue; | |
3814 | } | |
3815 | ||
ce78b96d JB |
3816 | if (b->type == bp_catchpoint) |
3817 | { | |
3818 | /* For now, none of the bp_catchpoint breakpoints need to | |
3819 | do anything at this point. In the future, if some of | |
3820 | the catchpoints need to something, we will need to add | |
3821 | a new method, and call this method from here. */ | |
3822 | continue; | |
3823 | } | |
3824 | ||
c5aa993b JM |
3825 | /* bp_finish is a special case. The only way we ought to be able |
3826 | to see one of these when an exec() has happened, is if the user | |
3827 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3828 | carries them to the call-site of the current callee, by setting | |
3829 | a temporary bp there and resuming. But in this case, the finish | |
3830 | will carry them entirely through the vfork & exec. | |
3831 | ||
3832 | We don't want to allow a bp_finish to remain inserted now. But | |
3833 | we can't safely delete it, 'cause finish_command has a handle to | |
3834 | the bp on a bpstat, and will later want to delete it. There's a | |
3835 | chance (and I've seen it happen) that if we delete the bp_finish | |
3836 | here, that its storage will get reused by the time finish_command | |
3837 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3838 | We really must allow finish_command to delete a bp_finish. | |
3839 | ||
e5dd4106 | 3840 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3841 | it's safe to delete something others may have handles to?" |
3842 | problem, what we'll do here is just uninsert the bp_finish, and | |
3843 | let finish_command delete it. | |
3844 | ||
3845 | (We know the bp_finish is "doomed" in the sense that it's | |
3846 | momentary, and will be deleted as soon as finish_command sees | |
3847 | the inferior stopped. So it doesn't matter that the bp's | |
3848 | address is probably bogus in the new a.out, unlike e.g., the | |
3849 | solib breakpoints.) */ | |
c5aa993b | 3850 | |
c5aa993b JM |
3851 | if (b->type == bp_finish) |
3852 | { | |
3853 | continue; | |
3854 | } | |
3855 | ||
3856 | /* Without a symbolic address, we have little hope of the | |
3857 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3858 | a.out. */ |
f00aae0f | 3859 | if (event_location_empty_p (b->location)) |
c5aa993b JM |
3860 | { |
3861 | delete_breakpoint (b); | |
3862 | continue; | |
3863 | } | |
c5aa993b | 3864 | } |
c906108c SS |
3865 | } |
3866 | ||
3867 | int | |
d80ee84f | 3868 | detach_breakpoints (ptid_t ptid) |
c906108c | 3869 | { |
35df4500 | 3870 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3871 | int val = 0; |
ce696e05 | 3872 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3873 | struct inferior *inf = current_inferior (); |
c5aa993b | 3874 | |
dfd4cc63 | 3875 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3876 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3877 | |
6c95b8df | 3878 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3879 | inferior_ptid = ptid; |
35df4500 | 3880 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3881 | { |
35df4500 | 3882 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3883 | continue; |
3884 | ||
bd9673a4 PW |
3885 | /* This function must physically remove breakpoints locations |
3886 | from the specified ptid, without modifying the breakpoint | |
3887 | package's state. Locations of type bp_loc_other are only | |
3888 | maintained at GDB side. So, there is no need to remove | |
3889 | these bp_loc_other locations. Moreover, removing these | |
3890 | would modify the breakpoint package's state. */ | |
3891 | if (bl->loc_type == bp_loc_other) | |
3892 | continue; | |
3893 | ||
35df4500 TJB |
3894 | if (bl->inserted) |
3895 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3896 | } |
d03285ec | 3897 | |
ce696e05 | 3898 | do_cleanups (old_chain); |
3a1bae8e | 3899 | return val; |
c906108c SS |
3900 | } |
3901 | ||
35df4500 | 3902 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3903 | Note that this is used to detach breakpoints from a child fork. |
3904 | When we get here, the child isn't in the inferior list, and neither | |
3905 | do we have objects to represent its address space --- we should | |
35df4500 | 3906 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3907 | |
c906108c | 3908 | static int |
35df4500 | 3909 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3910 | { |
3911 | int val; | |
c5aa993b | 3912 | |
35df4500 TJB |
3913 | /* BL is never in moribund_locations by our callers. */ |
3914 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3915 | |
74960c60 VP |
3916 | /* The type of none suggests that owner is actually deleted. |
3917 | This should not ever happen. */ | |
35df4500 | 3918 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3919 | |
35df4500 TJB |
3920 | if (bl->loc_type == bp_loc_software_breakpoint |
3921 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3922 | { |
c02f5703 MS |
3923 | /* "Normal" instruction breakpoint: either the standard |
3924 | trap-instruction bp (bp_breakpoint), or a | |
3925 | bp_hardware_breakpoint. */ | |
3926 | ||
3927 | /* First check to see if we have to handle an overlay. */ | |
3928 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3929 | || bl->section == NULL |
3930 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3931 | { |
3932 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3933 | |
3934 | /* If we're trying to uninsert a memory breakpoint that we | |
3935 | know is set in a dynamic object that is marked | |
3936 | shlib_disabled, then either the dynamic object was | |
3937 | removed with "remove-symbol-file" or with | |
3938 | "nosharedlibrary". In the former case, we don't know | |
3939 | whether another dynamic object might have loaded over the | |
3940 | breakpoint's address -- the user might well let us know | |
3941 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3942 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3943 | list of dynamically loaded objects). If we have the |
3944 | breakpoint's shadow memory, that is, this is a software | |
3945 | breakpoint managed by GDB, check whether the breakpoint | |
3946 | is still inserted in memory, to avoid overwriting wrong | |
3947 | code with stale saved shadow contents. Note that HW | |
3948 | breakpoints don't have shadow memory, as they're | |
3949 | implemented using a mechanism that is not dependent on | |
3950 | being able to modify the target's memory, and as such | |
3951 | they should always be removed. */ | |
3952 | if (bl->shlib_disabled | |
3953 | && bl->target_info.shadow_len != 0 | |
3954 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3955 | val = 0; | |
3956 | else | |
3957 | val = bl->owner->ops->remove_location (bl); | |
c02f5703 | 3958 | } |
c906108c SS |
3959 | else |
3960 | { | |
4a64f543 | 3961 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3962 | Did we set a breakpoint at the LMA? */ |
3963 | if (!overlay_events_enabled) | |
3964 | { | |
3965 | /* Yes -- overlay event support is not active, so we | |
3966 | should have set a breakpoint at the LMA. Remove it. | |
3967 | */ | |
c02f5703 MS |
3968 | /* Ignore any failures: if the LMA is in ROM, we will |
3969 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3970 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3971 | target_remove_hw_breakpoint (bl->gdbarch, | |
3972 | &bl->overlay_target_info); | |
c02f5703 | 3973 | else |
35df4500 TJB |
3974 | target_remove_breakpoint (bl->gdbarch, |
3975 | &bl->overlay_target_info); | |
c02f5703 MS |
3976 | } |
3977 | /* Did we set a breakpoint at the VMA? | |
3978 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3979 | if (bl->inserted) |
c906108c | 3980 | { |
c02f5703 MS |
3981 | /* Yes -- remove it. Previously we did not bother to |
3982 | remove the breakpoint if the section had been | |
3983 | unmapped, but let's not rely on that being safe. We | |
3984 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3985 | |
3986 | /* However, we should remove *software* breakpoints only | |
3987 | if the section is still mapped, or else we overwrite | |
3988 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3989 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3990 | || section_is_mapped (bl->section)) | |
3991 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3992 | else |
3993 | val = 0; | |
c906108c | 3994 | } |
c02f5703 MS |
3995 | else |
3996 | { | |
3997 | /* No -- not inserted, so no need to remove. No error. */ | |
3998 | val = 0; | |
3999 | } | |
c906108c | 4000 | } |
879d1e6b | 4001 | |
08351840 PA |
4002 | /* In some cases, we might not be able to remove a breakpoint in |
4003 | a shared library that has already been removed, but we have | |
4004 | not yet processed the shlib unload event. Similarly for an | |
4005 | unloaded add-symbol-file object - the user might not yet have | |
4006 | had the chance to remove-symbol-file it. shlib_disabled will | |
4007 | be set if the library/object has already been removed, but | |
4008 | the breakpoint hasn't been uninserted yet, e.g., after | |
4009 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
4010 | always-inserted mode. */ | |
076855f9 | 4011 | if (val |
08351840 PA |
4012 | && (bl->loc_type == bp_loc_software_breakpoint |
4013 | && (bl->shlib_disabled | |
4014 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
4015 | || shared_objfile_contains_address_p (bl->pspace, |
4016 | bl->address)))) | |
879d1e6b UW |
4017 | val = 0; |
4018 | ||
c906108c SS |
4019 | if (val) |
4020 | return val; | |
35df4500 | 4021 | bl->inserted = (is == mark_inserted); |
c906108c | 4022 | } |
35df4500 | 4023 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 4024 | { |
77b06cd7 TJB |
4025 | gdb_assert (bl->owner->ops != NULL |
4026 | && bl->owner->ops->remove_location != NULL); | |
4027 | ||
35df4500 | 4028 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 4029 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 4030 | |
c906108c | 4031 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 4032 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 4033 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4034 | bl->owner->number); |
c906108c | 4035 | } |
35df4500 TJB |
4036 | else if (bl->owner->type == bp_catchpoint |
4037 | && breakpoint_enabled (bl->owner) | |
4038 | && !bl->duplicate) | |
ce78b96d | 4039 | { |
77b06cd7 TJB |
4040 | gdb_assert (bl->owner->ops != NULL |
4041 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 4042 | |
77b06cd7 | 4043 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
4044 | if (val) |
4045 | return val; | |
77b06cd7 | 4046 | |
35df4500 | 4047 | bl->inserted = (is == mark_inserted); |
ce78b96d | 4048 | } |
c906108c SS |
4049 | |
4050 | return 0; | |
4051 | } | |
4052 | ||
6c95b8df | 4053 | static int |
35df4500 | 4054 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
4055 | { |
4056 | int ret; | |
4057 | struct cleanup *old_chain; | |
4058 | ||
35df4500 TJB |
4059 | /* BL is never in moribund_locations by our callers. */ |
4060 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4061 | |
6c95b8df PA |
4062 | /* The type of none suggests that owner is actually deleted. |
4063 | This should not ever happen. */ | |
35df4500 | 4064 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
4065 | |
4066 | old_chain = save_current_space_and_thread (); | |
4067 | ||
35df4500 | 4068 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4069 | |
35df4500 | 4070 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
4071 | |
4072 | do_cleanups (old_chain); | |
4073 | return ret; | |
4074 | } | |
4075 | ||
c906108c SS |
4076 | /* Clear the "inserted" flag in all breakpoints. */ |
4077 | ||
25b22b0a | 4078 | void |
fba45db2 | 4079 | mark_breakpoints_out (void) |
c906108c | 4080 | { |
35df4500 | 4081 | struct bp_location *bl, **blp_tmp; |
c906108c | 4082 | |
35df4500 | 4083 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 4084 | if (bl->pspace == current_program_space) |
35df4500 | 4085 | bl->inserted = 0; |
c906108c SS |
4086 | } |
4087 | ||
53a5351d JM |
4088 | /* Clear the "inserted" flag in all breakpoints and delete any |
4089 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4090 | |
4091 | Plus other such housekeeping that has to be done for breakpoints | |
4092 | between runs. | |
4093 | ||
53a5351d JM |
4094 | Note: this function gets called at the end of a run (by |
4095 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4096 | init_wait_for_inferior). */ |
c906108c SS |
4097 | |
4098 | ||
4099 | ||
4100 | void | |
fba45db2 | 4101 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4102 | { |
35df4500 TJB |
4103 | struct breakpoint *b, *b_tmp; |
4104 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 4105 | int ix; |
6c95b8df | 4106 | struct program_space *pspace = current_program_space; |
c906108c | 4107 | |
50c71eaf PA |
4108 | /* If breakpoint locations are shared across processes, then there's |
4109 | nothing to do. */ | |
f5656ead | 4110 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4111 | return; |
4112 | ||
1a853c52 | 4113 | mark_breakpoints_out (); |
075f6582 | 4114 | |
35df4500 | 4115 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 4116 | { |
6c95b8df PA |
4117 | if (b->loc && b->loc->pspace != pspace) |
4118 | continue; | |
4119 | ||
c5aa993b JM |
4120 | switch (b->type) |
4121 | { | |
4122 | case bp_call_dummy: | |
e2e4d78b | 4123 | case bp_longjmp_call_dummy: |
c906108c | 4124 | |
c5aa993b | 4125 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
4126 | cause problems when the inferior is rerun, so we better get |
4127 | rid of it. */ | |
4128 | ||
4129 | case bp_watchpoint_scope: | |
4130 | ||
4131 | /* Also get rid of scope breakpoints. */ | |
4132 | ||
4133 | case bp_shlib_event: | |
4134 | ||
4135 | /* Also remove solib event breakpoints. Their addresses may | |
4136 | have changed since the last time we ran the program. | |
4137 | Actually we may now be debugging against different target; | |
4138 | and so the solib backend that installed this breakpoint may | |
4139 | not be used in by the target. E.g., | |
4140 | ||
4141 | (gdb) file prog-linux | |
4142 | (gdb) run # native linux target | |
4143 | ... | |
4144 | (gdb) kill | |
4145 | (gdb) file prog-win.exe | |
4146 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4147 | */ | |
c906108c | 4148 | |
f59f708a PA |
4149 | case bp_step_resume: |
4150 | ||
4151 | /* Also remove step-resume breakpoints. */ | |
4152 | ||
7c16b83e PA |
4153 | case bp_single_step: |
4154 | ||
4155 | /* Also remove single-step breakpoints. */ | |
4156 | ||
c5aa993b JM |
4157 | delete_breakpoint (b); |
4158 | break; | |
c906108c | 4159 | |
c5aa993b JM |
4160 | case bp_watchpoint: |
4161 | case bp_hardware_watchpoint: | |
4162 | case bp_read_watchpoint: | |
4163 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4164 | { |
4165 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4166 | |
3a5c3e22 PA |
4167 | /* Likewise for watchpoints on local expressions. */ |
4168 | if (w->exp_valid_block != NULL) | |
4169 | delete_breakpoint (b); | |
4170 | else if (context == inf_starting) | |
4171 | { | |
4172 | /* Reset val field to force reread of starting value in | |
4173 | insert_breakpoints. */ | |
4174 | if (w->val) | |
4175 | value_free (w->val); | |
4176 | w->val = NULL; | |
4177 | w->val_valid = 0; | |
c860120c | 4178 | } |
3a5c3e22 | 4179 | } |
c5aa993b JM |
4180 | break; |
4181 | default: | |
c5aa993b JM |
4182 | break; |
4183 | } | |
4184 | } | |
1c5cfe86 PA |
4185 | |
4186 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4187 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4188 | decref_bp_location (&bl); | |
1c5cfe86 | 4189 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4190 | } |
4191 | ||
6c95b8df PA |
4192 | /* These functions concern about actual breakpoints inserted in the |
4193 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4194 | we need to hop over the bkpt --- so we check for address space | |
4195 | match, not program space. */ | |
4196 | ||
c2c6d25f JM |
4197 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4198 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4199 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4200 | permanent breakpoint. | |
4201 | - When continuing from a location with an ordinary breakpoint, we | |
4202 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4203 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4204 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4205 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4206 | |
c2c6d25f | 4207 | enum breakpoint_here |
6c95b8df | 4208 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4209 | { |
35df4500 | 4210 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4211 | int any_breakpoint_here = 0; |
c906108c | 4212 | |
35df4500 | 4213 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4214 | { |
35df4500 TJB |
4215 | if (bl->loc_type != bp_loc_software_breakpoint |
4216 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4217 | continue; |
4218 | ||
f1310107 | 4219 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4220 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4221 | || bl->permanent) |
f1310107 | 4222 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4223 | { |
4224 | if (overlay_debugging | |
35df4500 TJB |
4225 | && section_is_overlay (bl->section) |
4226 | && !section_is_mapped (bl->section)) | |
075f6582 | 4227 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4228 | else if (bl->permanent) |
075f6582 DJ |
4229 | return permanent_breakpoint_here; |
4230 | else | |
4231 | any_breakpoint_here = 1; | |
4232 | } | |
4233 | } | |
c906108c | 4234 | |
f486487f | 4235 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4236 | } |
4237 | ||
1c5cfe86 PA |
4238 | /* Return true if there's a moribund breakpoint at PC. */ |
4239 | ||
4240 | int | |
6c95b8df | 4241 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4242 | { |
4243 | struct bp_location *loc; | |
4244 | int ix; | |
4245 | ||
4246 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4247 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4248 | return 1; |
4249 | ||
4250 | return 0; | |
4251 | } | |
c2c6d25f | 4252 | |
f7ce857f PA |
4253 | /* Returns non-zero iff BL is inserted at PC, in address space |
4254 | ASPACE. */ | |
4255 | ||
4256 | static int | |
4257 | bp_location_inserted_here_p (struct bp_location *bl, | |
4258 | struct address_space *aspace, CORE_ADDR pc) | |
4259 | { | |
4260 | if (bl->inserted | |
4261 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4262 | aspace, pc)) | |
4263 | { | |
4264 | if (overlay_debugging | |
4265 | && section_is_overlay (bl->section) | |
4266 | && !section_is_mapped (bl->section)) | |
4267 | return 0; /* unmapped overlay -- can't be a match */ | |
4268 | else | |
4269 | return 1; | |
4270 | } | |
4271 | return 0; | |
4272 | } | |
4273 | ||
a1fd2fa5 | 4274 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4275 | |
4276 | int | |
a1fd2fa5 | 4277 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4278 | { |
f7ce857f PA |
4279 | struct bp_location **blp, **blp_tmp = NULL; |
4280 | struct bp_location *bl; | |
c906108c | 4281 | |
f7ce857f | 4282 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4283 | { |
f7ce857f PA |
4284 | struct bp_location *bl = *blp; |
4285 | ||
35df4500 TJB |
4286 | if (bl->loc_type != bp_loc_software_breakpoint |
4287 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4288 | continue; |
4289 | ||
f7ce857f PA |
4290 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4291 | return 1; | |
c5aa993b | 4292 | } |
c36b740a VP |
4293 | return 0; |
4294 | } | |
4295 | ||
a1fd2fa5 PA |
4296 | /* This function returns non-zero iff there is a software breakpoint |
4297 | inserted at PC. */ | |
c36b740a VP |
4298 | |
4299 | int | |
a1fd2fa5 PA |
4300 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
4301 | CORE_ADDR pc) | |
4fa8626c | 4302 | { |
f7ce857f PA |
4303 | struct bp_location **blp, **blp_tmp = NULL; |
4304 | struct bp_location *bl; | |
4fa8626c | 4305 | |
f7ce857f | 4306 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4307 | { |
f7ce857f PA |
4308 | struct bp_location *bl = *blp; |
4309 | ||
35df4500 | 4310 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4311 | continue; |
4312 | ||
f7ce857f PA |
4313 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4314 | return 1; | |
4fa8626c DJ |
4315 | } |
4316 | ||
4317 | return 0; | |
9c02b525 PA |
4318 | } |
4319 | ||
4320 | /* See breakpoint.h. */ | |
4321 | ||
4322 | int | |
4323 | hardware_breakpoint_inserted_here_p (struct address_space *aspace, | |
4324 | CORE_ADDR pc) | |
4325 | { | |
4326 | struct bp_location **blp, **blp_tmp = NULL; | |
4327 | struct bp_location *bl; | |
4328 | ||
4329 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4330 | { | |
4331 | struct bp_location *bl = *blp; | |
4332 | ||
4333 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4334 | continue; | |
4335 | ||
4336 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4337 | return 1; | |
4338 | } | |
4339 | ||
4340 | return 0; | |
4fa8626c DJ |
4341 | } |
4342 | ||
9093389c PA |
4343 | int |
4344 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4345 | CORE_ADDR addr, ULONGEST len) | |
4346 | { | |
4347 | struct breakpoint *bpt; | |
4348 | ||
4349 | ALL_BREAKPOINTS (bpt) | |
4350 | { | |
4351 | struct bp_location *loc; | |
4352 | ||
4353 | if (bpt->type != bp_hardware_watchpoint | |
4354 | && bpt->type != bp_access_watchpoint) | |
4355 | continue; | |
4356 | ||
4357 | if (!breakpoint_enabled (bpt)) | |
4358 | continue; | |
4359 | ||
4360 | for (loc = bpt->loc; loc; loc = loc->next) | |
4361 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4362 | { | |
4363 | CORE_ADDR l, h; | |
4364 | ||
4365 | /* Check for intersection. */ | |
4366 | l = max (loc->address, addr); | |
4367 | h = min (loc->address + loc->length, addr + len); | |
4368 | if (l < h) | |
4369 | return 1; | |
4370 | } | |
4371 | } | |
4372 | return 0; | |
4373 | } | |
c906108c | 4374 | \f |
c5aa993b | 4375 | |
c906108c SS |
4376 | /* bpstat stuff. External routines' interfaces are documented |
4377 | in breakpoint.h. */ | |
4378 | ||
4379 | int | |
c326b90e | 4380 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4381 | { |
533be4dd | 4382 | return (ep->type == bp_catchpoint); |
c906108c SS |
4383 | } |
4384 | ||
f431efe5 PA |
4385 | /* Frees any storage that is part of a bpstat. Does not walk the |
4386 | 'next' chain. */ | |
4387 | ||
4388 | static void | |
198757a8 VP |
4389 | bpstat_free (bpstat bs) |
4390 | { | |
4391 | if (bs->old_val != NULL) | |
4392 | value_free (bs->old_val); | |
9add0f1b | 4393 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4394 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4395 | xfree (bs); |
4396 | } | |
4397 | ||
c906108c SS |
4398 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4399 | Also free any storage that is part of a bpstat. */ | |
4400 | ||
4401 | void | |
fba45db2 | 4402 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4403 | { |
4404 | bpstat p; | |
4405 | bpstat q; | |
4406 | ||
4407 | if (bsp == 0) | |
4408 | return; | |
4409 | p = *bsp; | |
4410 | while (p != NULL) | |
4411 | { | |
4412 | q = p->next; | |
198757a8 | 4413 | bpstat_free (p); |
c906108c SS |
4414 | p = q; |
4415 | } | |
4416 | *bsp = NULL; | |
4417 | } | |
4418 | ||
4419 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4420 | is part of the bpstat is copied as well. */ | |
4421 | ||
4422 | bpstat | |
fba45db2 | 4423 | bpstat_copy (bpstat bs) |
c906108c SS |
4424 | { |
4425 | bpstat p = NULL; | |
4426 | bpstat tmp; | |
4427 | bpstat retval = NULL; | |
4428 | ||
4429 | if (bs == NULL) | |
4430 | return bs; | |
4431 | ||
4432 | for (; bs != NULL; bs = bs->next) | |
4433 | { | |
4434 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4435 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4436 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4437 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4438 | if (bs->old_val != NULL) |
3c3185ac JK |
4439 | { |
4440 | tmp->old_val = value_copy (bs->old_val); | |
4441 | release_value (tmp->old_val); | |
4442 | } | |
31cc81e9 | 4443 | |
c906108c SS |
4444 | if (p == NULL) |
4445 | /* This is the first thing in the chain. */ | |
4446 | retval = tmp; | |
4447 | else | |
4448 | p->next = tmp; | |
4449 | p = tmp; | |
4450 | } | |
4451 | p->next = NULL; | |
4452 | return retval; | |
4453 | } | |
4454 | ||
4a64f543 | 4455 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4456 | |
4457 | bpstat | |
fba45db2 | 4458 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4459 | { |
c5aa993b JM |
4460 | if (bsp == NULL) |
4461 | return NULL; | |
c906108c | 4462 | |
c5aa993b JM |
4463 | for (; bsp != NULL; bsp = bsp->next) |
4464 | { | |
f431efe5 | 4465 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4466 | return bsp; |
4467 | } | |
c906108c SS |
4468 | return NULL; |
4469 | } | |
4470 | ||
ab04a2af TT |
4471 | /* See breakpoint.h. */ |
4472 | ||
47591c29 | 4473 | int |
427cd150 | 4474 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4475 | { |
ab04a2af TT |
4476 | for (; bsp != NULL; bsp = bsp->next) |
4477 | { | |
427cd150 TT |
4478 | if (bsp->breakpoint_at == NULL) |
4479 | { | |
4480 | /* A moribund location can never explain a signal other than | |
4481 | GDB_SIGNAL_TRAP. */ | |
4482 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4483 | return 1; |
427cd150 TT |
4484 | } |
4485 | else | |
47591c29 PA |
4486 | { |
4487 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4488 | sig)) | |
4489 | return 1; | |
4490 | } | |
ab04a2af TT |
4491 | } |
4492 | ||
47591c29 | 4493 | return 0; |
ab04a2af TT |
4494 | } |
4495 | ||
4a64f543 MS |
4496 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4497 | stopped at. *BSP upon return is a bpstat which points to the | |
4498 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4499 | good for anything but further calls to bpstat_num). | |
4500 | ||
8671a17b PA |
4501 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4502 | Return -1 if stopped at a breakpoint that has been deleted since | |
4503 | we set it. | |
4504 | Return 1 otherwise. */ | |
c906108c SS |
4505 | |
4506 | int | |
8671a17b | 4507 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4508 | { |
4509 | struct breakpoint *b; | |
4510 | ||
4511 | if ((*bsp) == NULL) | |
4512 | return 0; /* No more breakpoint values */ | |
8671a17b | 4513 | |
4a64f543 MS |
4514 | /* We assume we'll never have several bpstats that correspond to a |
4515 | single breakpoint -- otherwise, this function might return the | |
4516 | same number more than once and this will look ugly. */ | |
f431efe5 | 4517 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4518 | *bsp = (*bsp)->next; |
4519 | if (b == NULL) | |
4520 | return -1; /* breakpoint that's been deleted since */ | |
4521 | ||
4522 | *num = b->number; /* We have its number */ | |
4523 | return 1; | |
c906108c SS |
4524 | } |
4525 | ||
e93ca019 | 4526 | /* See breakpoint.h. */ |
c906108c SS |
4527 | |
4528 | void | |
e93ca019 | 4529 | bpstat_clear_actions (void) |
c906108c | 4530 | { |
e93ca019 JK |
4531 | struct thread_info *tp; |
4532 | bpstat bs; | |
4533 | ||
4534 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4535 | return; | |
4536 | ||
4537 | tp = find_thread_ptid (inferior_ptid); | |
4538 | if (tp == NULL) | |
4539 | return; | |
4540 | ||
4541 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4542 | { |
9add0f1b | 4543 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4544 | |
c906108c SS |
4545 | if (bs->old_val != NULL) |
4546 | { | |
4547 | value_free (bs->old_val); | |
4548 | bs->old_val = NULL; | |
4549 | } | |
4550 | } | |
4551 | } | |
4552 | ||
f3b1572e PA |
4553 | /* Called when a command is about to proceed the inferior. */ |
4554 | ||
4555 | static void | |
4556 | breakpoint_about_to_proceed (void) | |
4557 | { | |
4558 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4559 | { | |
4560 | struct thread_info *tp = inferior_thread (); | |
4561 | ||
4562 | /* Allow inferior function calls in breakpoint commands to not | |
4563 | interrupt the command list. When the call finishes | |
4564 | successfully, the inferior will be standing at the same | |
4565 | breakpoint as if nothing happened. */ | |
16c381f0 | 4566 | if (tp->control.in_infcall) |
f3b1572e PA |
4567 | return; |
4568 | } | |
4569 | ||
4570 | breakpoint_proceeded = 1; | |
4571 | } | |
4572 | ||
4a64f543 MS |
4573 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4574 | command. */ | |
c906108c | 4575 | static void |
4efb68b1 | 4576 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4577 | { |
4578 | executing_breakpoint_commands = 0; | |
4579 | } | |
4580 | ||
abf85f46 JK |
4581 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4582 | or its equivalent. */ | |
4583 | ||
4584 | static int | |
4585 | command_line_is_silent (struct command_line *cmd) | |
4586 | { | |
4f45d445 | 4587 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4588 | } |
4589 | ||
4a64f543 MS |
4590 | /* Execute all the commands associated with all the breakpoints at |
4591 | this location. Any of these commands could cause the process to | |
4592 | proceed beyond this point, etc. We look out for such changes by | |
4593 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4594 | |
347bddb7 PA |
4595 | Returns true if a breakpoint command resumed the inferior. In that |
4596 | case, it is the caller's responsibility to recall it again with the | |
4597 | bpstat of the current thread. */ | |
4598 | ||
4599 | static int | |
4600 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4601 | { |
4602 | bpstat bs; | |
4603 | struct cleanup *old_chain; | |
347bddb7 | 4604 | int again = 0; |
c906108c SS |
4605 | |
4606 | /* Avoid endless recursion if a `source' command is contained | |
4607 | in bs->commands. */ | |
4608 | if (executing_breakpoint_commands) | |
347bddb7 | 4609 | return 0; |
c906108c SS |
4610 | |
4611 | executing_breakpoint_commands = 1; | |
4612 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4613 | ||
cf6c5ffb TT |
4614 | prevent_dont_repeat (); |
4615 | ||
4a64f543 | 4616 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4617 | bs = *bsp; |
4618 | ||
4619 | breakpoint_proceeded = 0; | |
4620 | for (; bs != NULL; bs = bs->next) | |
4621 | { | |
9add0f1b | 4622 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4623 | struct command_line *cmd; |
4624 | struct cleanup *this_cmd_tree_chain; | |
4625 | ||
4626 | /* Take ownership of the BSP's command tree, if it has one. | |
4627 | ||
4628 | The command tree could legitimately contain commands like | |
4629 | 'step' and 'next', which call clear_proceed_status, which | |
4630 | frees stop_bpstat's command tree. To make sure this doesn't | |
4631 | free the tree we're executing out from under us, we need to | |
4632 | take ownership of the tree ourselves. Since a given bpstat's | |
4633 | commands are only executed once, we don't need to copy it; we | |
4634 | can clear the pointer in the bpstat, and make sure we free | |
4635 | the tree when we're done. */ | |
9add0f1b TT |
4636 | ccmd = bs->commands; |
4637 | bs->commands = NULL; | |
abf85f46 JK |
4638 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4639 | cmd = ccmd ? ccmd->commands : NULL; | |
4640 | if (command_line_is_silent (cmd)) | |
4641 | { | |
4642 | /* The action has been already done by bpstat_stop_status. */ | |
4643 | cmd = cmd->next; | |
4644 | } | |
6c50ab1c | 4645 | |
c906108c SS |
4646 | while (cmd != NULL) |
4647 | { | |
4648 | execute_control_command (cmd); | |
4649 | ||
4650 | if (breakpoint_proceeded) | |
4651 | break; | |
4652 | else | |
4653 | cmd = cmd->next; | |
4654 | } | |
6c50ab1c JB |
4655 | |
4656 | /* We can free this command tree now. */ | |
4657 | do_cleanups (this_cmd_tree_chain); | |
4658 | ||
c906108c | 4659 | if (breakpoint_proceeded) |
32c1e744 | 4660 | { |
5589af0e | 4661 | if (interpreter_async && target_can_async_p ()) |
347bddb7 PA |
4662 | /* If we are in async mode, then the target might be still |
4663 | running, not stopped at any breakpoint, so nothing for | |
4664 | us to do here -- just return to the event loop. */ | |
4665 | ; | |
32c1e744 VP |
4666 | else |
4667 | /* In sync mode, when execute_control_command returns | |
4668 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4669 | Breakpoint commands for that stop were not run, since |
4670 | execute_command does not run breakpoint commands -- | |
4671 | only command_line_handler does, but that one is not | |
4672 | involved in execution of breakpoint commands. So, we | |
4673 | can now execute breakpoint commands. It should be | |
4674 | noted that making execute_command do bpstat actions is | |
4675 | not an option -- in this case we'll have recursive | |
4676 | invocation of bpstat for each breakpoint with a | |
4677 | command, and can easily blow up GDB stack. Instead, we | |
4678 | return true, which will trigger the caller to recall us | |
4679 | with the new stop_bpstat. */ | |
4680 | again = 1; | |
4681 | break; | |
32c1e744 | 4682 | } |
c906108c | 4683 | } |
c2b8ed2c | 4684 | do_cleanups (old_chain); |
347bddb7 PA |
4685 | return again; |
4686 | } | |
4687 | ||
4688 | void | |
4689 | bpstat_do_actions (void) | |
4690 | { | |
353d1d73 JK |
4691 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4692 | ||
347bddb7 PA |
4693 | /* Do any commands attached to breakpoint we are stopped at. */ |
4694 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4695 | && target_has_execution | |
4696 | && !is_exited (inferior_ptid) | |
4697 | && !is_executing (inferior_ptid)) | |
4698 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4699 | and only return when it is stopped at the next breakpoint, we | |
4700 | keep doing breakpoint actions until it returns false to | |
4701 | indicate the inferior was not resumed. */ | |
16c381f0 | 4702 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4703 | break; |
353d1d73 JK |
4704 | |
4705 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4706 | } |
4707 | ||
fa4727a6 DJ |
4708 | /* Print out the (old or new) value associated with a watchpoint. */ |
4709 | ||
4710 | static void | |
4711 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4712 | { | |
4713 | if (val == NULL) | |
4714 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4715 | else | |
79a45b7d TT |
4716 | { |
4717 | struct value_print_options opts; | |
4718 | get_user_print_options (&opts); | |
4719 | value_print (val, stream, &opts); | |
4720 | } | |
fa4727a6 DJ |
4721 | } |
4722 | ||
e514a9d6 | 4723 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4724 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4725 | 'print_it' in the bpstat structure. Under some circumstances we |
4726 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4727 | normal_stop(). */ |
e514a9d6 JM |
4728 | |
4729 | static enum print_stop_action | |
4730 | print_bp_stop_message (bpstat bs) | |
4731 | { | |
4732 | switch (bs->print_it) | |
4733 | { | |
4734 | case print_it_noop: | |
4a64f543 | 4735 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4736 | return PRINT_UNKNOWN; |
4737 | break; | |
4738 | ||
4739 | case print_it_done: | |
4740 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4741 | relevant messages. */ |
e514a9d6 JM |
4742 | return PRINT_SRC_AND_LOC; |
4743 | break; | |
4744 | ||
4745 | case print_it_normal: | |
4f8d1dc6 | 4746 | { |
f431efe5 PA |
4747 | struct breakpoint *b = bs->breakpoint_at; |
4748 | ||
1a6a67de TJB |
4749 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4750 | which has since been deleted. */ | |
4751 | if (b == NULL) | |
4752 | return PRINT_UNKNOWN; | |
4753 | ||
348d480f PA |
4754 | /* Normal case. Call the breakpoint's print_it method. */ |
4755 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4756 | } |
348d480f | 4757 | break; |
3086aeae | 4758 | |
e514a9d6 | 4759 | default: |
8e65ff28 | 4760 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4761 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4762 | break; |
c906108c | 4763 | } |
c906108c SS |
4764 | } |
4765 | ||
edcc5120 TT |
4766 | /* A helper function that prints a shared library stopped event. */ |
4767 | ||
4768 | static void | |
4769 | print_solib_event (int is_catchpoint) | |
4770 | { | |
4771 | int any_deleted | |
4772 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4773 | int any_added | |
4774 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4775 | ||
4776 | if (!is_catchpoint) | |
4777 | { | |
4778 | if (any_added || any_deleted) | |
4779 | ui_out_text (current_uiout, | |
4780 | _("Stopped due to shared library event:\n")); | |
4781 | else | |
4782 | ui_out_text (current_uiout, | |
4783 | _("Stopped due to shared library event (no " | |
4784 | "libraries added or removed)\n")); | |
4785 | } | |
4786 | ||
4787 | if (ui_out_is_mi_like_p (current_uiout)) | |
4788 | ui_out_field_string (current_uiout, "reason", | |
4789 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4790 | ||
4791 | if (any_deleted) | |
4792 | { | |
4793 | struct cleanup *cleanup; | |
4794 | char *name; | |
4795 | int ix; | |
4796 | ||
4797 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4798 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4799 | "removed"); | |
4800 | for (ix = 0; | |
4801 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4802 | ix, name); | |
4803 | ++ix) | |
4804 | { | |
4805 | if (ix > 0) | |
4806 | ui_out_text (current_uiout, " "); | |
4807 | ui_out_field_string (current_uiout, "library", name); | |
4808 | ui_out_text (current_uiout, "\n"); | |
4809 | } | |
4810 | ||
4811 | do_cleanups (cleanup); | |
4812 | } | |
4813 | ||
4814 | if (any_added) | |
4815 | { | |
4816 | struct so_list *iter; | |
4817 | int ix; | |
4818 | struct cleanup *cleanup; | |
4819 | ||
4820 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4821 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4822 | "added"); | |
4823 | for (ix = 0; | |
4824 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4825 | ix, iter); | |
4826 | ++ix) | |
4827 | { | |
4828 | if (ix > 0) | |
4829 | ui_out_text (current_uiout, " "); | |
4830 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4831 | ui_out_text (current_uiout, "\n"); | |
4832 | } | |
4833 | ||
4834 | do_cleanups (cleanup); | |
4835 | } | |
4836 | } | |
4837 | ||
e514a9d6 JM |
4838 | /* Print a message indicating what happened. This is called from |
4839 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4840 | list - a list of the eventpoints that caused this stop. KIND is |
4841 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4842 | routine calls the generic print routine for printing a message |
4843 | about reasons for stopping. This will print (for example) the | |
4844 | "Breakpoint n," part of the output. The return value of this | |
4845 | routine is one of: | |
c906108c | 4846 | |
4a64f543 | 4847 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4848 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4849 | code to print the location. An example is |
c5aa993b JM |
4850 | "Breakpoint 1, " which should be followed by |
4851 | the location. | |
917317f4 | 4852 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4853 | to also print the location part of the message. |
4854 | An example is the catch/throw messages, which | |
4a64f543 | 4855 | don't require a location appended to the end. |
917317f4 | 4856 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4857 | further info to be printed. */ |
c906108c | 4858 | |
917317f4 | 4859 | enum print_stop_action |
36dfb11c | 4860 | bpstat_print (bpstat bs, int kind) |
c906108c | 4861 | { |
f486487f | 4862 | enum print_stop_action val; |
c5aa993b | 4863 | |
c906108c | 4864 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4865 | (Currently all watchpoints go on the bpstat whether hit or not. |
4866 | That probably could (should) be changed, provided care is taken | |
c906108c | 4867 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4868 | for (; bs; bs = bs->next) |
4869 | { | |
4870 | val = print_bp_stop_message (bs); | |
4871 | if (val == PRINT_SRC_ONLY | |
4872 | || val == PRINT_SRC_AND_LOC | |
4873 | || val == PRINT_NOTHING) | |
4874 | return val; | |
4875 | } | |
c906108c | 4876 | |
36dfb11c TT |
4877 | /* If we had hit a shared library event breakpoint, |
4878 | print_bp_stop_message would print out this message. If we hit an | |
4879 | OS-level shared library event, do the same thing. */ | |
4880 | if (kind == TARGET_WAITKIND_LOADED) | |
4881 | { | |
edcc5120 | 4882 | print_solib_event (0); |
36dfb11c TT |
4883 | return PRINT_NOTHING; |
4884 | } | |
4885 | ||
e514a9d6 | 4886 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4887 | with and nothing was printed. */ |
917317f4 | 4888 | return PRINT_UNKNOWN; |
c906108c SS |
4889 | } |
4890 | ||
c42bd95a DE |
4891 | /* Evaluate the expression EXP and return 1 if value is zero. |
4892 | This returns the inverse of the condition because it is called | |
4893 | from catch_errors which returns 0 if an exception happened, and if an | |
4894 | exception happens we want execution to stop. | |
4a64f543 | 4895 | The argument is a "struct expression *" that has been cast to a |
c42bd95a | 4896 | "void *" to make it pass through catch_errors. */ |
c906108c SS |
4897 | |
4898 | static int | |
4efb68b1 | 4899 | breakpoint_cond_eval (void *exp) |
c906108c | 4900 | { |
278cd55f | 4901 | struct value *mark = value_mark (); |
c5aa993b | 4902 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4903 | |
c906108c SS |
4904 | value_free_to_mark (mark); |
4905 | return i; | |
4906 | } | |
4907 | ||
5760d0ab | 4908 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4909 | |
4910 | static bpstat | |
5760d0ab | 4911 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4912 | { |
4913 | bpstat bs; | |
4914 | ||
4915 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4916 | bs->next = NULL; |
4917 | **bs_link_pointer = bs; | |
4918 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4919 | bs->breakpoint_at = bl->owner; |
4920 | bs->bp_location_at = bl; | |
4921 | incref_bp_location (bl); | |
c906108c SS |
4922 | /* If the condition is false, etc., don't do the commands. */ |
4923 | bs->commands = NULL; | |
4924 | bs->old_val = NULL; | |
4925 | bs->print_it = print_it_normal; | |
4926 | return bs; | |
4927 | } | |
4928 | \f | |
d983da9c DJ |
4929 | /* The target has stopped with waitstatus WS. Check if any hardware |
4930 | watchpoints have triggered, according to the target. */ | |
4931 | ||
4932 | int | |
4933 | watchpoints_triggered (struct target_waitstatus *ws) | |
4934 | { | |
d92524f1 | 4935 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4936 | CORE_ADDR addr; |
4937 | struct breakpoint *b; | |
4938 | ||
4939 | if (!stopped_by_watchpoint) | |
4940 | { | |
4941 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4942 | as not triggered. */ | |
4943 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4944 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4945 | { |
4946 | struct watchpoint *w = (struct watchpoint *) b; | |
4947 | ||
4948 | w->watchpoint_triggered = watch_triggered_no; | |
4949 | } | |
d983da9c DJ |
4950 | |
4951 | return 0; | |
4952 | } | |
4953 | ||
4954 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4955 | { | |
4956 | /* We were stopped by a watchpoint, but we don't know where. | |
4957 | Mark all watchpoints as unknown. */ | |
4958 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4959 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4960 | { |
4961 | struct watchpoint *w = (struct watchpoint *) b; | |
4962 | ||
4963 | w->watchpoint_triggered = watch_triggered_unknown; | |
4964 | } | |
d983da9c | 4965 | |
3c4797ba | 4966 | return 1; |
d983da9c DJ |
4967 | } |
4968 | ||
4969 | /* The target could report the data address. Mark watchpoints | |
4970 | affected by this data address as triggered, and all others as not | |
4971 | triggered. */ | |
4972 | ||
4973 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4974 | if (is_hardware_watchpoint (b)) |
d983da9c | 4975 | { |
3a5c3e22 | 4976 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4977 | struct bp_location *loc; |
d983da9c | 4978 | |
3a5c3e22 | 4979 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4980 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4981 | { |
3a5c3e22 | 4982 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4983 | { |
3a5c3e22 PA |
4984 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4985 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4986 | |
4987 | if (newaddr == start) | |
4988 | { | |
3a5c3e22 | 4989 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4990 | break; |
4991 | } | |
4992 | } | |
4993 | /* Exact match not required. Within range is sufficient. */ | |
4994 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4995 | addr, loc->address, | |
4996 | loc->length)) | |
4997 | { | |
3a5c3e22 | 4998 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4999 | break; |
5000 | } | |
5001 | } | |
d983da9c DJ |
5002 | } |
5003 | ||
5004 | return 1; | |
5005 | } | |
5006 | ||
c906108c SS |
5007 | /* Possible return values for watchpoint_check (this can't be an enum |
5008 | because of check_errors). */ | |
5009 | /* The watchpoint has been deleted. */ | |
5010 | #define WP_DELETED 1 | |
5011 | /* The value has changed. */ | |
5012 | #define WP_VALUE_CHANGED 2 | |
5013 | /* The value has not changed. */ | |
5014 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
5015 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
5016 | #define WP_IGNORE 4 | |
c906108c SS |
5017 | |
5018 | #define BP_TEMPFLAG 1 | |
5019 | #define BP_HARDWAREFLAG 2 | |
5020 | ||
4a64f543 MS |
5021 | /* Evaluate watchpoint condition expression and check if its value |
5022 | changed. | |
553e4c11 JB |
5023 | |
5024 | P should be a pointer to struct bpstat, but is defined as a void * | |
5025 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
5026 | |
5027 | static int | |
4efb68b1 | 5028 | watchpoint_check (void *p) |
c906108c SS |
5029 | { |
5030 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 5031 | struct watchpoint *b; |
c906108c SS |
5032 | struct frame_info *fr; |
5033 | int within_current_scope; | |
5034 | ||
f431efe5 | 5035 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 5036 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 5037 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5038 | |
f6bc2008 PA |
5039 | /* If this is a local watchpoint, we only want to check if the |
5040 | watchpoint frame is in scope if the current thread is the thread | |
5041 | that was used to create the watchpoint. */ | |
5042 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5043 | return WP_IGNORE; |
f6bc2008 | 5044 | |
c906108c SS |
5045 | if (b->exp_valid_block == NULL) |
5046 | within_current_scope = 1; | |
5047 | else | |
5048 | { | |
edb3359d DJ |
5049 | struct frame_info *frame = get_current_frame (); |
5050 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
5051 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5052 | ||
c9cf6e20 | 5053 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5054 | still in the function but the stack frame has already been |
5055 | invalidated. Since we can't rely on the values of local | |
5056 | variables after the stack has been destroyed, we are treating | |
5057 | the watchpoint in that state as `not changed' without further | |
5058 | checking. Don't mark watchpoints as changed if the current | |
5059 | frame is in an epilogue - even if they are in some other | |
5060 | frame, our view of the stack is likely to be wrong and | |
5061 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5062 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5063 | return WP_IGNORE; |
a0f49112 | 5064 | |
101dcfbe | 5065 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5066 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5067 | |
5068 | /* If we've gotten confused in the unwinder, we might have | |
5069 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5070 | if (within_current_scope) |
5071 | { | |
5072 | struct symbol *function; | |
5073 | ||
5074 | function = get_frame_function (fr); | |
5075 | if (function == NULL | |
5076 | || !contained_in (b->exp_valid_block, | |
5077 | SYMBOL_BLOCK_VALUE (function))) | |
5078 | within_current_scope = 0; | |
5079 | } | |
69fbadd5 | 5080 | |
edb3359d | 5081 | if (within_current_scope) |
c906108c SS |
5082 | /* If we end up stopping, the current frame will get selected |
5083 | in normal_stop. So this call to select_frame won't affect | |
5084 | the user. */ | |
0f7d239c | 5085 | select_frame (fr); |
c906108c | 5086 | } |
c5aa993b | 5087 | |
c906108c SS |
5088 | if (within_current_scope) |
5089 | { | |
4a64f543 MS |
5090 | /* We use value_{,free_to_}mark because it could be a *long* |
5091 | time before we return to the command level and call | |
5092 | free_all_values. We can't call free_all_values because we | |
5093 | might be in the middle of evaluating a function call. */ | |
c906108c | 5094 | |
0cf6dd15 | 5095 | int pc = 0; |
9c06b0b4 | 5096 | struct value *mark; |
fa4727a6 DJ |
5097 | struct value *new_val; |
5098 | ||
3a5c3e22 | 5099 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
5100 | /* Since we don't know the exact trigger address (from |
5101 | stopped_data_address), just tell the user we've triggered | |
5102 | a mask watchpoint. */ | |
5103 | return WP_VALUE_CHANGED; | |
5104 | ||
5105 | mark = value_mark (); | |
3a1115a0 | 5106 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 5107 | |
bb9d5f81 PP |
5108 | if (b->val_bitsize != 0) |
5109 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5110 | ||
4a64f543 MS |
5111 | /* We use value_equal_contents instead of value_equal because |
5112 | the latter coerces an array to a pointer, thus comparing just | |
5113 | the address of the array instead of its contents. This is | |
5114 | not what we want. */ | |
fa4727a6 | 5115 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 5116 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 5117 | { |
fa4727a6 DJ |
5118 | if (new_val != NULL) |
5119 | { | |
5120 | release_value (new_val); | |
5121 | value_free_to_mark (mark); | |
5122 | } | |
c906108c SS |
5123 | bs->old_val = b->val; |
5124 | b->val = new_val; | |
fa4727a6 | 5125 | b->val_valid = 1; |
c906108c SS |
5126 | return WP_VALUE_CHANGED; |
5127 | } | |
5128 | else | |
5129 | { | |
60e1c644 | 5130 | /* Nothing changed. */ |
c906108c | 5131 | value_free_to_mark (mark); |
c906108c SS |
5132 | return WP_VALUE_NOT_CHANGED; |
5133 | } | |
5134 | } | |
5135 | else | |
5136 | { | |
79a45e25 PA |
5137 | struct ui_out *uiout = current_uiout; |
5138 | ||
c906108c | 5139 | /* This seems like the only logical thing to do because |
c5aa993b JM |
5140 | if we temporarily ignored the watchpoint, then when |
5141 | we reenter the block in which it is valid it contains | |
5142 | garbage (in the case of a function, it may have two | |
5143 | garbage values, one before and one after the prologue). | |
5144 | So we can't even detect the first assignment to it and | |
5145 | watch after that (since the garbage may or may not equal | |
5146 | the first value assigned). */ | |
348d480f PA |
5147 | /* We print all the stop information in |
5148 | breakpoint_ops->print_it, but in this case, by the time we | |
5149 | call breakpoint_ops->print_it this bp will be deleted | |
5150 | already. So we have no choice but print the information | |
5151 | here. */ | |
9dc5e2a9 | 5152 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
5153 | ui_out_field_string |
5154 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 5155 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 5156 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
5157 | ui_out_text (uiout, |
5158 | " deleted because the program has left the block in\n\ | |
8b93c638 | 5159 | which its expression is valid.\n"); |
4ce44c66 | 5160 | |
cdac0397 | 5161 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 5162 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 5163 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5164 | |
5165 | return WP_DELETED; | |
5166 | } | |
5167 | } | |
5168 | ||
18a18393 | 5169 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5170 | breakpoint location BL. This function does not check if we should |
5171 | stop, only if BL explains the stop. */ | |
5172 | ||
18a18393 | 5173 | static int |
6c95b8df | 5174 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5175 | struct address_space *aspace, CORE_ADDR bp_addr, |
5176 | const struct target_waitstatus *ws) | |
18a18393 VP |
5177 | { |
5178 | struct breakpoint *b = bl->owner; | |
5179 | ||
348d480f | 5180 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5181 | gdb_assert (b != NULL); |
5182 | ||
09ac7c10 | 5183 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5184 | } |
5185 | ||
3a5c3e22 PA |
5186 | /* Determine if the watched values have actually changed, and we |
5187 | should stop. If not, set BS->stop to 0. */ | |
5188 | ||
18a18393 VP |
5189 | static void |
5190 | bpstat_check_watchpoint (bpstat bs) | |
5191 | { | |
2bdf28a0 | 5192 | const struct bp_location *bl; |
3a5c3e22 | 5193 | struct watchpoint *b; |
2bdf28a0 JK |
5194 | |
5195 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5196 | bl = bs->bp_location_at; |
2bdf28a0 | 5197 | gdb_assert (bl != NULL); |
3a5c3e22 | 5198 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5199 | gdb_assert (b != NULL); |
18a18393 | 5200 | |
18a18393 | 5201 | { |
18a18393 VP |
5202 | int must_check_value = 0; |
5203 | ||
3a5c3e22 | 5204 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
5205 | /* For a software watchpoint, we must always check the |
5206 | watched value. */ | |
5207 | must_check_value = 1; | |
5208 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5209 | /* We have a hardware watchpoint (read, write, or access) | |
5210 | and the target earlier reported an address watched by | |
5211 | this watchpoint. */ | |
5212 | must_check_value = 1; | |
5213 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 5214 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
5215 | /* We were stopped by a hardware watchpoint, but the target could |
5216 | not report the data address. We must check the watchpoint's | |
5217 | value. Access and read watchpoints are out of luck; without | |
5218 | a data address, we can't figure it out. */ | |
5219 | must_check_value = 1; | |
3a5c3e22 | 5220 | |
18a18393 VP |
5221 | if (must_check_value) |
5222 | { | |
3e43a32a MS |
5223 | char *message |
5224 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 5225 | b->base.number); |
18a18393 VP |
5226 | struct cleanup *cleanups = make_cleanup (xfree, message); |
5227 | int e = catch_errors (watchpoint_check, bs, message, | |
5228 | RETURN_MASK_ALL); | |
5229 | do_cleanups (cleanups); | |
5230 | switch (e) | |
5231 | { | |
5232 | case WP_DELETED: | |
5233 | /* We've already printed what needs to be printed. */ | |
5234 | bs->print_it = print_it_done; | |
5235 | /* Stop. */ | |
5236 | break; | |
60e1c644 PA |
5237 | case WP_IGNORE: |
5238 | bs->print_it = print_it_noop; | |
5239 | bs->stop = 0; | |
5240 | break; | |
18a18393 | 5241 | case WP_VALUE_CHANGED: |
3a5c3e22 | 5242 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 5243 | { |
85d721b8 PA |
5244 | /* There are two cases to consider here: |
5245 | ||
4a64f543 | 5246 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5247 | In that case, trust the target, and always report |
5248 | the watchpoint hit to the user. Even though | |
5249 | reads don't cause value changes, the value may | |
5250 | have changed since the last time it was read, and | |
5251 | since we're not trapping writes, we will not see | |
5252 | those, and as such we should ignore our notion of | |
5253 | old value. | |
5254 | ||
4a64f543 | 5255 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5256 | reads and writes. There are two ways this may |
5257 | happen: | |
5258 | ||
4a64f543 | 5259 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5260 | reads only, but can break on accesses (reads or |
5261 | writes), such as e.g., x86. We detect this case | |
5262 | at the time we try to insert read watchpoints. | |
5263 | ||
4a64f543 | 5264 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5265 | watchpoints, but, the user set an access or write |
5266 | watchpoint watching the same memory as this read | |
5267 | watchpoint. | |
5268 | ||
5269 | If we're watching memory writes as well as reads, | |
5270 | ignore watchpoint hits when we find that the | |
5271 | value hasn't changed, as reads don't cause | |
5272 | changes. This still gives false positives when | |
5273 | the program writes the same value to memory as | |
5274 | what there was already in memory (we will confuse | |
5275 | it for a read), but it's much better than | |
5276 | nothing. */ | |
5277 | ||
5278 | int other_write_watchpoint = 0; | |
5279 | ||
5280 | if (bl->watchpoint_type == hw_read) | |
5281 | { | |
5282 | struct breakpoint *other_b; | |
5283 | ||
5284 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5285 | if (other_b->type == bp_hardware_watchpoint |
5286 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5287 | { |
3a5c3e22 PA |
5288 | struct watchpoint *other_w = |
5289 | (struct watchpoint *) other_b; | |
5290 | ||
5291 | if (other_w->watchpoint_triggered | |
5292 | == watch_triggered_yes) | |
5293 | { | |
5294 | other_write_watchpoint = 1; | |
5295 | break; | |
5296 | } | |
85d721b8 PA |
5297 | } |
5298 | } | |
5299 | ||
5300 | if (other_write_watchpoint | |
5301 | || bl->watchpoint_type == hw_access) | |
5302 | { | |
5303 | /* We're watching the same memory for writes, | |
5304 | and the value changed since the last time we | |
5305 | updated it, so this trap must be for a write. | |
5306 | Ignore it. */ | |
5307 | bs->print_it = print_it_noop; | |
5308 | bs->stop = 0; | |
5309 | } | |
18a18393 VP |
5310 | } |
5311 | break; | |
5312 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
5313 | if (b->base.type == bp_hardware_watchpoint |
5314 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
5315 | { |
5316 | /* Don't stop: write watchpoints shouldn't fire if | |
5317 | the value hasn't changed. */ | |
5318 | bs->print_it = print_it_noop; | |
5319 | bs->stop = 0; | |
5320 | } | |
5321 | /* Stop. */ | |
5322 | break; | |
5323 | default: | |
5324 | /* Can't happen. */ | |
5325 | case 0: | |
5326 | /* Error from catch_errors. */ | |
3a5c3e22 | 5327 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 5328 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
5329 | /* We've already printed what needs to be printed. */ |
5330 | bs->print_it = print_it_done; | |
5331 | break; | |
5332 | } | |
5333 | } | |
5334 | else /* must_check_value == 0 */ | |
5335 | { | |
5336 | /* This is a case where some watchpoint(s) triggered, but | |
5337 | not at the address of this watchpoint, or else no | |
5338 | watchpoint triggered after all. So don't print | |
5339 | anything for this watchpoint. */ | |
5340 | bs->print_it = print_it_noop; | |
5341 | bs->stop = 0; | |
5342 | } | |
5343 | } | |
5344 | } | |
5345 | ||
7d4df6a4 DE |
5346 | /* For breakpoints that are currently marked as telling gdb to stop, |
5347 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5348 | of breakpoint referred to by BS. If we should not stop for this |
5349 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5350 | |
18a18393 VP |
5351 | static void |
5352 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5353 | { | |
2bdf28a0 JK |
5354 | const struct bp_location *bl; |
5355 | struct breakpoint *b; | |
7d4df6a4 DE |
5356 | int value_is_zero = 0; |
5357 | struct expression *cond; | |
5358 | ||
5359 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5360 | |
5361 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5362 | bl = bs->bp_location_at; |
2bdf28a0 | 5363 | gdb_assert (bl != NULL); |
f431efe5 | 5364 | b = bs->breakpoint_at; |
2bdf28a0 | 5365 | gdb_assert (b != NULL); |
18a18393 | 5366 | |
b775012e LM |
5367 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5368 | need to do so again since GDB does not know if we stopped due to a | |
5369 | breakpoint or a single step breakpoint. */ | |
5370 | ||
18a18393 | 5371 | if (frame_id_p (b->frame_id) |
edb3359d | 5372 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5373 | { |
7d4df6a4 DE |
5374 | bs->stop = 0; |
5375 | return; | |
5376 | } | |
60e1c644 | 5377 | |
12ab52e9 PA |
5378 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5379 | evaluating the condition if this isn't the specified | |
5380 | thread/task. */ | |
5381 | if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid)) | |
5382 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) | |
5383 | ||
6c1b0f7b DE |
5384 | { |
5385 | bs->stop = 0; | |
5386 | return; | |
5387 | } | |
5388 | ||
6dddc817 DE |
5389 | /* Evaluate extension language breakpoints that have a "stop" method |
5390 | implemented. */ | |
5391 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5392 | |
7d4df6a4 DE |
5393 | if (is_watchpoint (b)) |
5394 | { | |
5395 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5396 | |
7d4df6a4 DE |
5397 | cond = w->cond_exp; |
5398 | } | |
5399 | else | |
5400 | cond = bl->cond; | |
60e1c644 | 5401 | |
7d4df6a4 DE |
5402 | if (cond && b->disposition != disp_del_at_next_stop) |
5403 | { | |
5404 | int within_current_scope = 1; | |
5405 | struct watchpoint * w; | |
60e1c644 | 5406 | |
7d4df6a4 DE |
5407 | /* We use value_mark and value_free_to_mark because it could |
5408 | be a long time before we return to the command level and | |
5409 | call free_all_values. We can't call free_all_values | |
5410 | because we might be in the middle of evaluating a | |
5411 | function call. */ | |
5412 | struct value *mark = value_mark (); | |
5413 | ||
5414 | if (is_watchpoint (b)) | |
5415 | w = (struct watchpoint *) b; | |
5416 | else | |
5417 | w = NULL; | |
5418 | ||
5419 | /* Need to select the frame, with all that implies so that | |
5420 | the conditions will have the right context. Because we | |
5421 | use the frame, we will not see an inlined function's | |
5422 | variables when we arrive at a breakpoint at the start | |
5423 | of the inlined function; the current frame will be the | |
5424 | call site. */ | |
5425 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5426 | select_frame (get_current_frame ()); | |
5427 | else | |
18a18393 | 5428 | { |
7d4df6a4 DE |
5429 | struct frame_info *frame; |
5430 | ||
5431 | /* For local watchpoint expressions, which particular | |
5432 | instance of a local is being watched matters, so we | |
5433 | keep track of the frame to evaluate the expression | |
5434 | in. To evaluate the condition however, it doesn't | |
5435 | really matter which instantiation of the function | |
5436 | where the condition makes sense triggers the | |
5437 | watchpoint. This allows an expression like "watch | |
5438 | global if q > 10" set in `func', catch writes to | |
5439 | global on all threads that call `func', or catch | |
5440 | writes on all recursive calls of `func' by a single | |
5441 | thread. We simply always evaluate the condition in | |
5442 | the innermost frame that's executing where it makes | |
5443 | sense to evaluate the condition. It seems | |
5444 | intuitive. */ | |
5445 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5446 | if (frame != NULL) | |
5447 | select_frame (frame); | |
5448 | else | |
5449 | within_current_scope = 0; | |
18a18393 | 5450 | } |
7d4df6a4 DE |
5451 | if (within_current_scope) |
5452 | value_is_zero | |
5453 | = catch_errors (breakpoint_cond_eval, cond, | |
5454 | "Error in testing breakpoint condition:\n", | |
5455 | RETURN_MASK_ALL); | |
5456 | else | |
18a18393 | 5457 | { |
7d4df6a4 DE |
5458 | warning (_("Watchpoint condition cannot be tested " |
5459 | "in the current scope")); | |
5460 | /* If we failed to set the right context for this | |
5461 | watchpoint, unconditionally report it. */ | |
5462 | value_is_zero = 0; | |
18a18393 | 5463 | } |
7d4df6a4 DE |
5464 | /* FIXME-someday, should give breakpoint #. */ |
5465 | value_free_to_mark (mark); | |
18a18393 | 5466 | } |
7d4df6a4 DE |
5467 | |
5468 | if (cond && value_is_zero) | |
5469 | { | |
5470 | bs->stop = 0; | |
5471 | } | |
7d4df6a4 DE |
5472 | else if (b->ignore_count > 0) |
5473 | { | |
5474 | b->ignore_count--; | |
5475 | bs->stop = 0; | |
5476 | /* Increase the hit count even though we don't stop. */ | |
5477 | ++(b->hit_count); | |
5478 | observer_notify_breakpoint_modified (b); | |
5479 | } | |
18a18393 VP |
5480 | } |
5481 | ||
1cf4d951 PA |
5482 | /* Returns true if we need to track moribund locations of LOC's type |
5483 | on the current target. */ | |
5484 | ||
5485 | static int | |
5486 | need_moribund_for_location_type (struct bp_location *loc) | |
5487 | { | |
5488 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5489 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5490 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5491 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5492 | } | |
5493 | ||
18a18393 | 5494 | |
9709f61c | 5495 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5496 | BP_ADDR in thread PTID. |
c906108c | 5497 | |
d983da9c | 5498 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5499 | don't understand this stop. Result is a chain of bpstat's such |
5500 | that: | |
c906108c | 5501 | |
c5aa993b | 5502 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5503 | |
c5aa993b | 5504 | if we understand why we stopped, the result is not null. |
c906108c | 5505 | |
c5aa993b JM |
5506 | Each element of the chain refers to a particular breakpoint or |
5507 | watchpoint at which we have stopped. (We may have stopped for | |
5508 | several reasons concurrently.) | |
c906108c | 5509 | |
c5aa993b JM |
5510 | Each element of the chain has valid next, breakpoint_at, |
5511 | commands, FIXME??? fields. */ | |
c906108c SS |
5512 | |
5513 | bpstat | |
6c95b8df | 5514 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5515 | CORE_ADDR bp_addr, ptid_t ptid, |
5516 | const struct target_waitstatus *ws) | |
c906108c | 5517 | { |
0d381245 | 5518 | struct breakpoint *b = NULL; |
afe38095 | 5519 | struct bp_location *bl; |
20874c92 | 5520 | struct bp_location *loc; |
5760d0ab JK |
5521 | /* First item of allocated bpstat's. */ |
5522 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5523 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5524 | bpstat bs; |
20874c92 | 5525 | int ix; |
429374b8 | 5526 | int need_remove_insert; |
f431efe5 | 5527 | int removed_any; |
c906108c | 5528 | |
f431efe5 PA |
5529 | /* First, build the bpstat chain with locations that explain a |
5530 | target stop, while being careful to not set the target running, | |
5531 | as that may invalidate locations (in particular watchpoint | |
5532 | locations are recreated). Resuming will happen here with | |
5533 | breakpoint conditions or watchpoint expressions that include | |
5534 | inferior function calls. */ | |
c5aa993b | 5535 | |
429374b8 JK |
5536 | ALL_BREAKPOINTS (b) |
5537 | { | |
1a853c52 | 5538 | if (!breakpoint_enabled (b)) |
429374b8 | 5539 | continue; |
a5606eee | 5540 | |
429374b8 JK |
5541 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5542 | { | |
4a64f543 MS |
5543 | /* For hardware watchpoints, we look only at the first |
5544 | location. The watchpoint_check function will work on the | |
5545 | entire expression, not the individual locations. For | |
5546 | read watchpoints, the watchpoints_triggered function has | |
5547 | checked all locations already. */ | |
429374b8 JK |
5548 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5549 | break; | |
18a18393 | 5550 | |
f6592439 | 5551 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5552 | continue; |
c5aa993b | 5553 | |
09ac7c10 | 5554 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5555 | continue; |
c5aa993b | 5556 | |
4a64f543 MS |
5557 | /* Come here if it's a watchpoint, or if the break address |
5558 | matches. */ | |
c5aa993b | 5559 | |
4a64f543 MS |
5560 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5561 | explain stop. */ | |
c5aa993b | 5562 | |
f431efe5 PA |
5563 | /* Assume we stop. Should we find a watchpoint that is not |
5564 | actually triggered, or if the condition of the breakpoint | |
5565 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5566 | bs->stop = 1; |
5567 | bs->print = 1; | |
d983da9c | 5568 | |
f431efe5 PA |
5569 | /* If this is a scope breakpoint, mark the associated |
5570 | watchpoint as triggered so that we will handle the | |
5571 | out-of-scope event. We'll get to the watchpoint next | |
5572 | iteration. */ | |
d0fb5eae | 5573 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5574 | { |
5575 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5576 | ||
5577 | w->watchpoint_triggered = watch_triggered_yes; | |
5578 | } | |
f431efe5 PA |
5579 | } |
5580 | } | |
5581 | ||
7c16b83e | 5582 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5583 | if (!target_supports_stopped_by_sw_breakpoint () |
5584 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5585 | { |
1cf4d951 | 5586 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5587 | { |
1cf4d951 PA |
5588 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5589 | && need_moribund_for_location_type (loc)) | |
5590 | { | |
5591 | bs = bpstat_alloc (loc, &bs_link); | |
5592 | /* For hits of moribund locations, we should just proceed. */ | |
5593 | bs->stop = 0; | |
5594 | bs->print = 0; | |
5595 | bs->print_it = print_it_noop; | |
5596 | } | |
f431efe5 PA |
5597 | } |
5598 | } | |
5599 | ||
edcc5120 TT |
5600 | /* A bit of special processing for shlib breakpoints. We need to |
5601 | process solib loading here, so that the lists of loaded and | |
5602 | unloaded libraries are correct before we handle "catch load" and | |
5603 | "catch unload". */ | |
5604 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5605 | { | |
5d268276 | 5606 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5607 | { |
5608 | handle_solib_event (); | |
5609 | break; | |
5610 | } | |
5611 | } | |
5612 | ||
f431efe5 PA |
5613 | /* Now go through the locations that caused the target to stop, and |
5614 | check whether we're interested in reporting this stop to higher | |
5615 | layers, or whether we should resume the target transparently. */ | |
5616 | ||
5617 | removed_any = 0; | |
5618 | ||
5760d0ab | 5619 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5620 | { |
5621 | if (!bs->stop) | |
5622 | continue; | |
5623 | ||
f431efe5 | 5624 | b = bs->breakpoint_at; |
348d480f PA |
5625 | b->ops->check_status (bs); |
5626 | if (bs->stop) | |
28010a5d | 5627 | { |
348d480f | 5628 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5629 | |
429374b8 JK |
5630 | if (bs->stop) |
5631 | { | |
5632 | ++(b->hit_count); | |
8d3788bd | 5633 | observer_notify_breakpoint_modified (b); |
c906108c | 5634 | |
4a64f543 | 5635 | /* We will stop here. */ |
429374b8 JK |
5636 | if (b->disposition == disp_disable) |
5637 | { | |
816338b5 | 5638 | --(b->enable_count); |
1a853c52 | 5639 | if (b->enable_count <= 0) |
429374b8 | 5640 | b->enable_state = bp_disabled; |
f431efe5 | 5641 | removed_any = 1; |
429374b8 JK |
5642 | } |
5643 | if (b->silent) | |
5644 | bs->print = 0; | |
5645 | bs->commands = b->commands; | |
9add0f1b | 5646 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5647 | if (command_line_is_silent (bs->commands |
5648 | ? bs->commands->commands : NULL)) | |
5649 | bs->print = 0; | |
9d6e6e84 HZ |
5650 | |
5651 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5652 | } |
5653 | ||
348d480f | 5654 | } |
a9b3a50f PA |
5655 | |
5656 | /* Print nothing for this entry if we don't stop or don't | |
5657 | print. */ | |
5658 | if (!bs->stop || !bs->print) | |
5659 | bs->print_it = print_it_noop; | |
429374b8 | 5660 | } |
876fa593 | 5661 | |
d983da9c DJ |
5662 | /* If we aren't stopping, the value of some hardware watchpoint may |
5663 | not have changed, but the intermediate memory locations we are | |
5664 | watching may have. Don't bother if we're stopping; this will get | |
5665 | done later. */ | |
d832cb68 | 5666 | need_remove_insert = 0; |
5760d0ab JK |
5667 | if (! bpstat_causes_stop (bs_head)) |
5668 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5669 | if (!bs->stop |
f431efe5 PA |
5670 | && bs->breakpoint_at |
5671 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5672 | { |
3a5c3e22 PA |
5673 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5674 | ||
5675 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5676 | need_remove_insert = 1; |
d983da9c DJ |
5677 | } |
5678 | ||
d832cb68 | 5679 | if (need_remove_insert) |
44702360 | 5680 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5681 | else if (removed_any) |
44702360 | 5682 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5683 | |
5760d0ab | 5684 | return bs_head; |
c906108c | 5685 | } |
628fe4e4 JK |
5686 | |
5687 | static void | |
5688 | handle_jit_event (void) | |
5689 | { | |
5690 | struct frame_info *frame; | |
5691 | struct gdbarch *gdbarch; | |
5692 | ||
5693 | /* Switch terminal for any messages produced by | |
5694 | breakpoint_re_set. */ | |
5695 | target_terminal_ours_for_output (); | |
5696 | ||
5697 | frame = get_current_frame (); | |
5698 | gdbarch = get_frame_arch (frame); | |
5699 | ||
5700 | jit_event_handler (gdbarch); | |
5701 | ||
5702 | target_terminal_inferior (); | |
5703 | } | |
5704 | ||
5705 | /* Prepare WHAT final decision for infrun. */ | |
5706 | ||
5707 | /* Decide what infrun needs to do with this bpstat. */ | |
5708 | ||
c906108c | 5709 | struct bpstat_what |
0e30163f | 5710 | bpstat_what (bpstat bs_head) |
c906108c | 5711 | { |
c906108c | 5712 | struct bpstat_what retval; |
628fe4e4 | 5713 | int jit_event = 0; |
0e30163f | 5714 | bpstat bs; |
c906108c | 5715 | |
628fe4e4 | 5716 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5717 | retval.call_dummy = STOP_NONE; |
186c406b | 5718 | retval.is_longjmp = 0; |
628fe4e4 | 5719 | |
0e30163f | 5720 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5721 | { |
628fe4e4 JK |
5722 | /* Extract this BS's action. After processing each BS, we check |
5723 | if its action overrides all we've seem so far. */ | |
5724 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5725 | enum bptype bptype; | |
5726 | ||
c906108c | 5727 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5728 | { |
5729 | /* I suspect this can happen if it was a momentary | |
5730 | breakpoint which has since been deleted. */ | |
5731 | bptype = bp_none; | |
5732 | } | |
20874c92 | 5733 | else |
f431efe5 | 5734 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5735 | |
5736 | switch (bptype) | |
c906108c SS |
5737 | { |
5738 | case bp_none: | |
628fe4e4 | 5739 | break; |
c906108c SS |
5740 | case bp_breakpoint: |
5741 | case bp_hardware_breakpoint: | |
7c16b83e | 5742 | case bp_single_step: |
c906108c SS |
5743 | case bp_until: |
5744 | case bp_finish: | |
a9b3a50f | 5745 | case bp_shlib_event: |
c906108c SS |
5746 | if (bs->stop) |
5747 | { | |
5748 | if (bs->print) | |
628fe4e4 | 5749 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5750 | else |
628fe4e4 | 5751 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5752 | } |
5753 | else | |
628fe4e4 | 5754 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5755 | break; |
5756 | case bp_watchpoint: | |
5757 | case bp_hardware_watchpoint: | |
5758 | case bp_read_watchpoint: | |
5759 | case bp_access_watchpoint: | |
5760 | if (bs->stop) | |
5761 | { | |
5762 | if (bs->print) | |
628fe4e4 | 5763 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5764 | else |
628fe4e4 | 5765 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5766 | } |
5767 | else | |
628fe4e4 JK |
5768 | { |
5769 | /* There was a watchpoint, but we're not stopping. | |
5770 | This requires no further action. */ | |
5771 | } | |
c906108c SS |
5772 | break; |
5773 | case bp_longjmp: | |
e2e4d78b | 5774 | case bp_longjmp_call_dummy: |
186c406b | 5775 | case bp_exception: |
0a39bb32 PA |
5776 | if (bs->stop) |
5777 | { | |
5778 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5779 | retval.is_longjmp = bptype != bp_exception; | |
5780 | } | |
5781 | else | |
5782 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5783 | break; |
5784 | case bp_longjmp_resume: | |
186c406b | 5785 | case bp_exception_resume: |
0a39bb32 PA |
5786 | if (bs->stop) |
5787 | { | |
5788 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5789 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5790 | } | |
5791 | else | |
5792 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5793 | break; |
5794 | case bp_step_resume: | |
5795 | if (bs->stop) | |
628fe4e4 JK |
5796 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5797 | else | |
c906108c | 5798 | { |
628fe4e4 JK |
5799 | /* It is for the wrong frame. */ |
5800 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5801 | } |
c906108c | 5802 | break; |
2c03e5be PA |
5803 | case bp_hp_step_resume: |
5804 | if (bs->stop) | |
5805 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5806 | else | |
5807 | { | |
5808 | /* It is for the wrong frame. */ | |
5809 | this_action = BPSTAT_WHAT_SINGLE; | |
5810 | } | |
5811 | break; | |
c906108c | 5812 | case bp_watchpoint_scope: |
c4093a6a | 5813 | case bp_thread_event: |
1900040c | 5814 | case bp_overlay_event: |
0fd8e87f | 5815 | case bp_longjmp_master: |
aa7d318d | 5816 | case bp_std_terminate_master: |
186c406b | 5817 | case bp_exception_master: |
628fe4e4 | 5818 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5819 | break; |
ce78b96d | 5820 | case bp_catchpoint: |
c5aa993b JM |
5821 | if (bs->stop) |
5822 | { | |
5823 | if (bs->print) | |
628fe4e4 | 5824 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5825 | else |
628fe4e4 | 5826 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5827 | } |
5828 | else | |
628fe4e4 JK |
5829 | { |
5830 | /* There was a catchpoint, but we're not stopping. | |
5831 | This requires no further action. */ | |
5832 | } | |
5833 | break; | |
628fe4e4 JK |
5834 | case bp_jit_event: |
5835 | jit_event = 1; | |
5836 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5837 | break; |
c906108c | 5838 | case bp_call_dummy: |
53a5351d JM |
5839 | /* Make sure the action is stop (silent or noisy), |
5840 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5841 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5842 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5843 | break; |
5844 | case bp_std_terminate: | |
5845 | /* Make sure the action is stop (silent or noisy), | |
5846 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5847 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5848 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5849 | break; |
1042e4c0 | 5850 | case bp_tracepoint: |
7a697b8d | 5851 | case bp_fast_tracepoint: |
0fb4aa4b | 5852 | case bp_static_tracepoint: |
1042e4c0 SS |
5853 | /* Tracepoint hits should not be reported back to GDB, and |
5854 | if one got through somehow, it should have been filtered | |
5855 | out already. */ | |
5856 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5857 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5858 | break; |
5859 | case bp_gnu_ifunc_resolver: | |
5860 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5861 | this_action = BPSTAT_WHAT_SINGLE; | |
5862 | break; | |
5863 | case bp_gnu_ifunc_resolver_return: | |
5864 | /* The breakpoint will be removed, execution will restart from the | |
5865 | PC of the former breakpoint. */ | |
5866 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5867 | break; | |
e7e0cddf SS |
5868 | |
5869 | case bp_dprintf: | |
a11cfd87 HZ |
5870 | if (bs->stop) |
5871 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5872 | else | |
5873 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5874 | break; |
5875 | ||
628fe4e4 JK |
5876 | default: |
5877 | internal_error (__FILE__, __LINE__, | |
5878 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5879 | } |
628fe4e4 JK |
5880 | |
5881 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5882 | } |
628fe4e4 | 5883 | |
0e30163f JK |
5884 | /* These operations may affect the bs->breakpoint_at state so they are |
5885 | delayed after MAIN_ACTION is decided above. */ | |
5886 | ||
628fe4e4 JK |
5887 | if (jit_event) |
5888 | { | |
5889 | if (debug_infrun) | |
5890 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5891 | ||
5892 | handle_jit_event (); | |
5893 | } | |
5894 | ||
0e30163f JK |
5895 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5896 | { | |
5897 | struct breakpoint *b = bs->breakpoint_at; | |
5898 | ||
5899 | if (b == NULL) | |
5900 | continue; | |
5901 | switch (b->type) | |
5902 | { | |
5903 | case bp_gnu_ifunc_resolver: | |
5904 | gnu_ifunc_resolver_stop (b); | |
5905 | break; | |
5906 | case bp_gnu_ifunc_resolver_return: | |
5907 | gnu_ifunc_resolver_return_stop (b); | |
5908 | break; | |
5909 | } | |
5910 | } | |
5911 | ||
c906108c SS |
5912 | return retval; |
5913 | } | |
5914 | ||
5915 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5916 | without hardware support). This isn't related to a specific bpstat, | |
5917 | just to things like whether watchpoints are set. */ | |
5918 | ||
c5aa993b | 5919 | int |
fba45db2 | 5920 | bpstat_should_step (void) |
c906108c SS |
5921 | { |
5922 | struct breakpoint *b; | |
cc59ec59 | 5923 | |
c906108c | 5924 | ALL_BREAKPOINTS (b) |
717a8278 | 5925 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5926 | return 1; |
c906108c SS |
5927 | return 0; |
5928 | } | |
5929 | ||
67822962 PA |
5930 | int |
5931 | bpstat_causes_stop (bpstat bs) | |
5932 | { | |
5933 | for (; bs != NULL; bs = bs->next) | |
5934 | if (bs->stop) | |
5935 | return 1; | |
5936 | ||
5937 | return 0; | |
5938 | } | |
5939 | ||
c906108c | 5940 | \f |
c5aa993b | 5941 | |
170b53b2 UW |
5942 | /* Compute a string of spaces suitable to indent the next line |
5943 | so it starts at the position corresponding to the table column | |
5944 | named COL_NAME in the currently active table of UIOUT. */ | |
5945 | ||
5946 | static char * | |
5947 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5948 | { | |
5949 | static char wrap_indent[80]; | |
5950 | int i, total_width, width, align; | |
5951 | char *text; | |
5952 | ||
5953 | total_width = 0; | |
5954 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5955 | { | |
5956 | if (strcmp (text, col_name) == 0) | |
5957 | { | |
5958 | gdb_assert (total_width < sizeof wrap_indent); | |
5959 | memset (wrap_indent, ' ', total_width); | |
5960 | wrap_indent[total_width] = 0; | |
5961 | ||
5962 | return wrap_indent; | |
5963 | } | |
5964 | ||
5965 | total_width += width + 1; | |
5966 | } | |
5967 | ||
5968 | return NULL; | |
5969 | } | |
5970 | ||
b775012e LM |
5971 | /* Determine if the locations of this breakpoint will have their conditions |
5972 | evaluated by the target, host or a mix of both. Returns the following: | |
5973 | ||
5974 | "host": Host evals condition. | |
5975 | "host or target": Host or Target evals condition. | |
5976 | "target": Target evals condition. | |
5977 | */ | |
5978 | ||
5979 | static const char * | |
5980 | bp_condition_evaluator (struct breakpoint *b) | |
5981 | { | |
5982 | struct bp_location *bl; | |
5983 | char host_evals = 0; | |
5984 | char target_evals = 0; | |
5985 | ||
5986 | if (!b) | |
5987 | return NULL; | |
5988 | ||
5989 | if (!is_breakpoint (b)) | |
5990 | return NULL; | |
5991 | ||
5992 | if (gdb_evaluates_breakpoint_condition_p () | |
5993 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5994 | return condition_evaluation_host; | |
5995 | ||
5996 | for (bl = b->loc; bl; bl = bl->next) | |
5997 | { | |
5998 | if (bl->cond_bytecode) | |
5999 | target_evals++; | |
6000 | else | |
6001 | host_evals++; | |
6002 | } | |
6003 | ||
6004 | if (host_evals && target_evals) | |
6005 | return condition_evaluation_both; | |
6006 | else if (target_evals) | |
6007 | return condition_evaluation_target; | |
6008 | else | |
6009 | return condition_evaluation_host; | |
6010 | } | |
6011 | ||
6012 | /* Determine the breakpoint location's condition evaluator. This is | |
6013 | similar to bp_condition_evaluator, but for locations. */ | |
6014 | ||
6015 | static const char * | |
6016 | bp_location_condition_evaluator (struct bp_location *bl) | |
6017 | { | |
6018 | if (bl && !is_breakpoint (bl->owner)) | |
6019 | return NULL; | |
6020 | ||
6021 | if (gdb_evaluates_breakpoint_condition_p () | |
6022 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6023 | return condition_evaluation_host; | |
6024 | ||
6025 | if (bl && bl->cond_bytecode) | |
6026 | return condition_evaluation_target; | |
6027 | else | |
6028 | return condition_evaluation_host; | |
6029 | } | |
6030 | ||
859825b8 JK |
6031 | /* Print the LOC location out of the list of B->LOC locations. */ |
6032 | ||
170b53b2 UW |
6033 | static void |
6034 | print_breakpoint_location (struct breakpoint *b, | |
6035 | struct bp_location *loc) | |
0d381245 | 6036 | { |
79a45e25 | 6037 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
6038 | struct cleanup *old_chain = save_current_program_space (); |
6039 | ||
859825b8 JK |
6040 | if (loc != NULL && loc->shlib_disabled) |
6041 | loc = NULL; | |
6042 | ||
6c95b8df PA |
6043 | if (loc != NULL) |
6044 | set_current_program_space (loc->pspace); | |
6045 | ||
56435ebe | 6046 | if (b->display_canonical) |
f00aae0f KS |
6047 | ui_out_field_string (uiout, "what", |
6048 | event_location_to_string (b->location)); | |
2f202fde | 6049 | else if (loc && loc->symtab) |
0d381245 VP |
6050 | { |
6051 | struct symbol *sym | |
6052 | = find_pc_sect_function (loc->address, loc->section); | |
6053 | if (sym) | |
6054 | { | |
6055 | ui_out_text (uiout, "in "); | |
6056 | ui_out_field_string (uiout, "func", | |
6057 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
6058 | ui_out_text (uiout, " "); |
6059 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
6060 | ui_out_text (uiout, "at "); | |
0d381245 | 6061 | } |
05cba821 JK |
6062 | ui_out_field_string (uiout, "file", |
6063 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 6064 | ui_out_text (uiout, ":"); |
05cba821 | 6065 | |
0d381245 | 6066 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
6067 | ui_out_field_string (uiout, "fullname", |
6068 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 6069 | |
f8eba3c6 | 6070 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 6071 | } |
859825b8 | 6072 | else if (loc) |
0d381245 | 6073 | { |
f99d8bf4 PA |
6074 | struct ui_file *stb = mem_fileopen (); |
6075 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 6076 | |
f99d8bf4 | 6077 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 6078 | demangle, ""); |
0d381245 | 6079 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
6080 | |
6081 | do_cleanups (stb_chain); | |
0d381245 | 6082 | } |
859825b8 | 6083 | else |
f00aae0f KS |
6084 | { |
6085 | ui_out_field_string (uiout, "pending", | |
6086 | event_location_to_string (b->location)); | |
6087 | /* If extra_string is available, it could be holding a condition | |
6088 | or dprintf arguments. In either case, make sure it is printed, | |
6089 | too, but only for non-MI streams. */ | |
6090 | if (!ui_out_is_mi_like_p (uiout) && b->extra_string != NULL) | |
6091 | { | |
6092 | if (b->type == bp_dprintf) | |
6093 | ui_out_text (uiout, ","); | |
6094 | else | |
6095 | ui_out_text (uiout, " "); | |
6096 | ui_out_text (uiout, b->extra_string); | |
6097 | } | |
6098 | } | |
6c95b8df | 6099 | |
b775012e LM |
6100 | if (loc && is_breakpoint (b) |
6101 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6102 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6103 | { | |
6104 | ui_out_text (uiout, " ("); | |
6105 | ui_out_field_string (uiout, "evaluated-by", | |
6106 | bp_location_condition_evaluator (loc)); | |
6107 | ui_out_text (uiout, ")"); | |
6108 | } | |
6109 | ||
6c95b8df | 6110 | do_cleanups (old_chain); |
0d381245 VP |
6111 | } |
6112 | ||
269b11a2 PA |
6113 | static const char * |
6114 | bptype_string (enum bptype type) | |
c906108c | 6115 | { |
c4093a6a JM |
6116 | struct ep_type_description |
6117 | { | |
6118 | enum bptype type; | |
6119 | char *description; | |
6120 | }; | |
6121 | static struct ep_type_description bptypes[] = | |
c906108c | 6122 | { |
c5aa993b JM |
6123 | {bp_none, "?deleted?"}, |
6124 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6125 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6126 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6127 | {bp_until, "until"}, |
6128 | {bp_finish, "finish"}, | |
6129 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6130 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6131 | {bp_read_watchpoint, "read watchpoint"}, |
6132 | {bp_access_watchpoint, "acc watchpoint"}, | |
6133 | {bp_longjmp, "longjmp"}, | |
6134 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6135 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6136 | {bp_exception, "exception"}, |
6137 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6138 | {bp_step_resume, "step resume"}, |
2c03e5be | 6139 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6140 | {bp_watchpoint_scope, "watchpoint scope"}, |
6141 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6142 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6143 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6144 | {bp_thread_event, "thread events"}, |
1900040c | 6145 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6146 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6147 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6148 | {bp_exception_master, "exception master"}, |
ce78b96d | 6149 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6150 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6151 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6152 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6153 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6154 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6155 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6156 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6157 | }; |
269b11a2 PA |
6158 | |
6159 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6160 | || ((int) type != bptypes[(int) type].type)) | |
6161 | internal_error (__FILE__, __LINE__, | |
6162 | _("bptypes table does not describe type #%d."), | |
6163 | (int) type); | |
6164 | ||
6165 | return bptypes[(int) type].description; | |
6166 | } | |
6167 | ||
998580f1 MK |
6168 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6169 | For CLI, prefix the list with the string 'inf'. */ | |
6170 | ||
6171 | static void | |
6172 | output_thread_groups (struct ui_out *uiout, | |
6173 | const char *field_name, | |
6174 | VEC(int) *inf_num, | |
6175 | int mi_only) | |
6176 | { | |
752eb8b4 | 6177 | struct cleanup *back_to; |
998580f1 MK |
6178 | int is_mi = ui_out_is_mi_like_p (uiout); |
6179 | int inf; | |
6180 | int i; | |
6181 | ||
6182 | /* For backward compatibility, don't display inferiors in CLI unless | |
6183 | there are several. Always display them for MI. */ | |
6184 | if (!is_mi && mi_only) | |
6185 | return; | |
6186 | ||
752eb8b4 TT |
6187 | back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); |
6188 | ||
998580f1 MK |
6189 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6190 | { | |
6191 | if (is_mi) | |
6192 | { | |
6193 | char mi_group[10]; | |
6194 | ||
6195 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
6196 | ui_out_field_string (uiout, NULL, mi_group); | |
6197 | } | |
6198 | else | |
6199 | { | |
6200 | if (i == 0) | |
6201 | ui_out_text (uiout, " inf "); | |
6202 | else | |
6203 | ui_out_text (uiout, ", "); | |
6204 | ||
6205 | ui_out_text (uiout, plongest (inf)); | |
6206 | } | |
6207 | } | |
6208 | ||
6209 | do_cleanups (back_to); | |
6210 | } | |
6211 | ||
269b11a2 PA |
6212 | /* Print B to gdb_stdout. */ |
6213 | ||
6214 | static void | |
6215 | print_one_breakpoint_location (struct breakpoint *b, | |
6216 | struct bp_location *loc, | |
6217 | int loc_number, | |
6218 | struct bp_location **last_loc, | |
269b11a2 PA |
6219 | int allflag) |
6220 | { | |
6221 | struct command_line *l; | |
c2c6d25f | 6222 | static char bpenables[] = "nynny"; |
c906108c | 6223 | |
79a45e25 | 6224 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6225 | int header_of_multiple = 0; |
6226 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6227 | struct value_print_options opts; |
6228 | ||
6229 | get_user_print_options (&opts); | |
0d381245 VP |
6230 | |
6231 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6232 | /* See comment in print_one_breakpoint concerning treatment of |
6233 | breakpoints with single disabled location. */ | |
0d381245 VP |
6234 | if (loc == NULL |
6235 | && (b->loc != NULL | |
6236 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6237 | header_of_multiple = 1; | |
6238 | if (loc == NULL) | |
6239 | loc = b->loc; | |
6240 | ||
c4093a6a JM |
6241 | annotate_record (); |
6242 | ||
6243 | /* 1 */ | |
6244 | annotate_field (0); | |
0d381245 VP |
6245 | if (part_of_multiple) |
6246 | { | |
6247 | char *formatted; | |
0c6773c1 | 6248 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
6249 | ui_out_field_string (uiout, "number", formatted); |
6250 | xfree (formatted); | |
6251 | } | |
6252 | else | |
6253 | { | |
6254 | ui_out_field_int (uiout, "number", b->number); | |
6255 | } | |
c4093a6a JM |
6256 | |
6257 | /* 2 */ | |
6258 | annotate_field (1); | |
0d381245 VP |
6259 | if (part_of_multiple) |
6260 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
6261 | else |
6262 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
6263 | |
6264 | /* 3 */ | |
6265 | annotate_field (2); | |
0d381245 VP |
6266 | if (part_of_multiple) |
6267 | ui_out_field_skip (uiout, "disp"); | |
6268 | else | |
2cec12e5 | 6269 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 6270 | |
c4093a6a JM |
6271 | |
6272 | /* 4 */ | |
6273 | annotate_field (3); | |
0d381245 | 6274 | if (part_of_multiple) |
54e52265 | 6275 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6276 | else |
4a64f543 MS |
6277 | ui_out_field_fmt (uiout, "enabled", "%c", |
6278 | bpenables[(int) b->enable_state]); | |
54e52265 | 6279 | ui_out_spaces (uiout, 2); |
0d381245 | 6280 | |
c4093a6a JM |
6281 | |
6282 | /* 5 and 6 */ | |
3086aeae | 6283 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6284 | { |
4a64f543 MS |
6285 | /* Although the print_one can possibly print all locations, |
6286 | calling it here is not likely to get any nice result. So, | |
6287 | make sure there's just one location. */ | |
0d381245 | 6288 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6289 | b->ops->print_one (b, last_loc); |
0d381245 | 6290 | } |
3086aeae DJ |
6291 | else |
6292 | switch (b->type) | |
6293 | { | |
6294 | case bp_none: | |
6295 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6296 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6297 | break; |
c906108c | 6298 | |
3086aeae DJ |
6299 | case bp_watchpoint: |
6300 | case bp_hardware_watchpoint: | |
6301 | case bp_read_watchpoint: | |
6302 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6303 | { |
6304 | struct watchpoint *w = (struct watchpoint *) b; | |
6305 | ||
6306 | /* Field 4, the address, is omitted (which makes the columns | |
6307 | not line up too nicely with the headers, but the effect | |
6308 | is relatively readable). */ | |
6309 | if (opts.addressprint) | |
6310 | ui_out_field_skip (uiout, "addr"); | |
6311 | annotate_field (5); | |
6312 | ui_out_field_string (uiout, "what", w->exp_string); | |
6313 | } | |
3086aeae DJ |
6314 | break; |
6315 | ||
3086aeae DJ |
6316 | case bp_breakpoint: |
6317 | case bp_hardware_breakpoint: | |
7c16b83e | 6318 | case bp_single_step: |
3086aeae DJ |
6319 | case bp_until: |
6320 | case bp_finish: | |
6321 | case bp_longjmp: | |
6322 | case bp_longjmp_resume: | |
e2e4d78b | 6323 | case bp_longjmp_call_dummy: |
186c406b TT |
6324 | case bp_exception: |
6325 | case bp_exception_resume: | |
3086aeae | 6326 | case bp_step_resume: |
2c03e5be | 6327 | case bp_hp_step_resume: |
3086aeae DJ |
6328 | case bp_watchpoint_scope: |
6329 | case bp_call_dummy: | |
aa7d318d | 6330 | case bp_std_terminate: |
3086aeae DJ |
6331 | case bp_shlib_event: |
6332 | case bp_thread_event: | |
6333 | case bp_overlay_event: | |
0fd8e87f | 6334 | case bp_longjmp_master: |
aa7d318d | 6335 | case bp_std_terminate_master: |
186c406b | 6336 | case bp_exception_master: |
1042e4c0 | 6337 | case bp_tracepoint: |
7a697b8d | 6338 | case bp_fast_tracepoint: |
0fb4aa4b | 6339 | case bp_static_tracepoint: |
e7e0cddf | 6340 | case bp_dprintf: |
4efc6507 | 6341 | case bp_jit_event: |
0e30163f JK |
6342 | case bp_gnu_ifunc_resolver: |
6343 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6344 | if (opts.addressprint) |
3086aeae DJ |
6345 | { |
6346 | annotate_field (4); | |
54e52265 | 6347 | if (header_of_multiple) |
0d381245 | 6348 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 6349 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 6350 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 6351 | else |
5af949e3 UW |
6352 | ui_out_field_core_addr (uiout, "addr", |
6353 | loc->gdbarch, loc->address); | |
3086aeae DJ |
6354 | } |
6355 | annotate_field (5); | |
0d381245 | 6356 | if (!header_of_multiple) |
170b53b2 | 6357 | print_breakpoint_location (b, loc); |
0d381245 | 6358 | if (b->loc) |
a6d9a66e | 6359 | *last_loc = b->loc; |
3086aeae DJ |
6360 | break; |
6361 | } | |
c906108c | 6362 | |
6c95b8df | 6363 | |
998580f1 | 6364 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6365 | { |
6366 | struct inferior *inf; | |
998580f1 MK |
6367 | VEC(int) *inf_num = NULL; |
6368 | int mi_only = 1; | |
6c95b8df | 6369 | |
998580f1 | 6370 | ALL_INFERIORS (inf) |
6c95b8df PA |
6371 | { |
6372 | if (inf->pspace == loc->pspace) | |
998580f1 | 6373 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6374 | } |
998580f1 MK |
6375 | |
6376 | /* For backward compatibility, don't display inferiors in CLI unless | |
6377 | there are several. Always display for MI. */ | |
6378 | if (allflag | |
6379 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6380 | && (number_of_program_spaces () > 1 | |
6381 | || number_of_inferiors () > 1) | |
6382 | /* LOC is for existing B, it cannot be in | |
6383 | moribund_locations and thus having NULL OWNER. */ | |
6384 | && loc->owner->type != bp_catchpoint)) | |
6385 | mi_only = 0; | |
6386 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6387 | VEC_free (int, inf_num); | |
6c95b8df PA |
6388 | } |
6389 | ||
4a306c9a | 6390 | if (!part_of_multiple) |
c4093a6a | 6391 | { |
4a306c9a JB |
6392 | if (b->thread != -1) |
6393 | { | |
6394 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6395 | "stop only in" line a little further down. */ |
4a306c9a JB |
6396 | ui_out_text (uiout, " thread "); |
6397 | ui_out_field_int (uiout, "thread", b->thread); | |
6398 | } | |
6399 | else if (b->task != 0) | |
6400 | { | |
6401 | ui_out_text (uiout, " task "); | |
6402 | ui_out_field_int (uiout, "task", b->task); | |
6403 | } | |
c4093a6a | 6404 | } |
f1310107 | 6405 | |
8b93c638 | 6406 | ui_out_text (uiout, "\n"); |
f1310107 | 6407 | |
348d480f | 6408 | if (!part_of_multiple) |
f1310107 TJB |
6409 | b->ops->print_one_detail (b, uiout); |
6410 | ||
0d381245 | 6411 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6412 | { |
6413 | annotate_field (6); | |
8b93c638 | 6414 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6415 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6416 | the frame ID. */ |
5af949e3 UW |
6417 | ui_out_field_core_addr (uiout, "frame", |
6418 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6419 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6420 | } |
6421 | ||
28010a5d | 6422 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6423 | { |
6424 | annotate_field (7); | |
d77f58be | 6425 | if (is_tracepoint (b)) |
1042e4c0 SS |
6426 | ui_out_text (uiout, "\ttrace only if "); |
6427 | else | |
6428 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6429 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6430 | |
6431 | /* Print whether the target is doing the breakpoint's condition | |
6432 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6433 | if (is_breakpoint (b) | |
6434 | && breakpoint_condition_evaluation_mode () | |
6435 | == condition_evaluation_target) | |
6436 | { | |
6437 | ui_out_text (uiout, " ("); | |
6438 | ui_out_field_string (uiout, "evaluated-by", | |
6439 | bp_condition_evaluator (b)); | |
6440 | ui_out_text (uiout, " evals)"); | |
6441 | } | |
0101ce28 JJ |
6442 | ui_out_text (uiout, "\n"); |
6443 | } | |
6444 | ||
0d381245 | 6445 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6446 | { |
4a64f543 | 6447 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6448 | ui_out_text (uiout, "\tstop only in thread "); |
6449 | ui_out_field_int (uiout, "thread", b->thread); | |
6450 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6451 | } |
6452 | ||
556ec64d YQ |
6453 | if (!part_of_multiple) |
6454 | { | |
6455 | if (b->hit_count) | |
31f56a27 YQ |
6456 | { |
6457 | /* FIXME should make an annotation for this. */ | |
6458 | if (is_catchpoint (b)) | |
6459 | ui_out_text (uiout, "\tcatchpoint"); | |
6460 | else if (is_tracepoint (b)) | |
6461 | ui_out_text (uiout, "\ttracepoint"); | |
6462 | else | |
6463 | ui_out_text (uiout, "\tbreakpoint"); | |
6464 | ui_out_text (uiout, " already hit "); | |
6465 | ui_out_field_int (uiout, "times", b->hit_count); | |
6466 | if (b->hit_count == 1) | |
6467 | ui_out_text (uiout, " time\n"); | |
6468 | else | |
6469 | ui_out_text (uiout, " times\n"); | |
6470 | } | |
556ec64d YQ |
6471 | else |
6472 | { | |
31f56a27 YQ |
6473 | /* Output the count also if it is zero, but only if this is mi. */ |
6474 | if (ui_out_is_mi_like_p (uiout)) | |
6475 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6476 | } |
6477 | } | |
8b93c638 | 6478 | |
0d381245 | 6479 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6480 | { |
6481 | annotate_field (8); | |
8b93c638 JM |
6482 | ui_out_text (uiout, "\tignore next "); |
6483 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6484 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6485 | } |
059fb39f | 6486 | |
816338b5 SS |
6487 | /* Note that an enable count of 1 corresponds to "enable once" |
6488 | behavior, which is reported by the combination of enablement and | |
6489 | disposition, so we don't need to mention it here. */ | |
6490 | if (!part_of_multiple && b->enable_count > 1) | |
6491 | { | |
6492 | annotate_field (8); | |
6493 | ui_out_text (uiout, "\tdisable after "); | |
6494 | /* Tweak the wording to clarify that ignore and enable counts | |
6495 | are distinct, and have additive effect. */ | |
6496 | if (b->ignore_count) | |
6497 | ui_out_text (uiout, "additional "); | |
6498 | else | |
6499 | ui_out_text (uiout, "next "); | |
6500 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6501 | ui_out_text (uiout, " hits\n"); | |
6502 | } | |
6503 | ||
f196051f SS |
6504 | if (!part_of_multiple && is_tracepoint (b)) |
6505 | { | |
6506 | struct tracepoint *tp = (struct tracepoint *) b; | |
6507 | ||
6508 | if (tp->traceframe_usage) | |
6509 | { | |
6510 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6511 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6512 | ui_out_text (uiout, " bytes\n"); | |
6513 | } | |
6514 | } | |
d3ce09f5 | 6515 | |
9add0f1b | 6516 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6517 | if (!part_of_multiple && l) |
c4093a6a | 6518 | { |
3b31d625 EZ |
6519 | struct cleanup *script_chain; |
6520 | ||
c4093a6a | 6521 | annotate_field (9); |
3b31d625 | 6522 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6523 | print_command_lines (uiout, l, 4); |
3b31d625 | 6524 | do_cleanups (script_chain); |
c4093a6a | 6525 | } |
d24317b4 | 6526 | |
d9b3f62e | 6527 | if (is_tracepoint (b)) |
1042e4c0 | 6528 | { |
d9b3f62e PA |
6529 | struct tracepoint *t = (struct tracepoint *) b; |
6530 | ||
6531 | if (!part_of_multiple && t->pass_count) | |
6532 | { | |
6533 | annotate_field (10); | |
6534 | ui_out_text (uiout, "\tpass count "); | |
6535 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6536 | ui_out_text (uiout, " \n"); | |
6537 | } | |
f2a8bc8a YQ |
6538 | |
6539 | /* Don't display it when tracepoint or tracepoint location is | |
6540 | pending. */ | |
6541 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6542 | { | |
6543 | annotate_field (11); | |
6544 | ||
6545 | if (ui_out_is_mi_like_p (uiout)) | |
6546 | ui_out_field_string (uiout, "installed", | |
6547 | loc->inserted ? "y" : "n"); | |
6548 | else | |
6549 | { | |
6550 | if (loc->inserted) | |
6551 | ui_out_text (uiout, "\t"); | |
6552 | else | |
6553 | ui_out_text (uiout, "\tnot "); | |
6554 | ui_out_text (uiout, "installed on target\n"); | |
6555 | } | |
6556 | } | |
1042e4c0 SS |
6557 | } |
6558 | ||
d24317b4 VP |
6559 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6560 | { | |
3a5c3e22 PA |
6561 | if (is_watchpoint (b)) |
6562 | { | |
6563 | struct watchpoint *w = (struct watchpoint *) b; | |
6564 | ||
6565 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6566 | } | |
f00aae0f KS |
6567 | else if (b->location != NULL |
6568 | && event_location_to_string (b->location) != NULL) | |
6569 | ui_out_field_string (uiout, "original-location", | |
6570 | event_location_to_string (b->location)); | |
d24317b4 | 6571 | } |
c4093a6a | 6572 | } |
c5aa993b | 6573 | |
0d381245 VP |
6574 | static void |
6575 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6576 | struct bp_location **last_loc, |
6c95b8df | 6577 | int allflag) |
0d381245 | 6578 | { |
8d3788bd | 6579 | struct cleanup *bkpt_chain; |
79a45e25 | 6580 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6581 | |
6582 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6583 | ||
12c5a436 | 6584 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6585 | do_cleanups (bkpt_chain); |
0d381245 VP |
6586 | |
6587 | /* If this breakpoint has custom print function, | |
6588 | it's already printed. Otherwise, print individual | |
6589 | locations, if any. */ | |
6590 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6591 | { | |
4a64f543 MS |
6592 | /* If breakpoint has a single location that is disabled, we |
6593 | print it as if it had several locations, since otherwise it's | |
6594 | hard to represent "breakpoint enabled, location disabled" | |
6595 | situation. | |
6596 | ||
6597 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6598 | internally, that's not a property exposed to user. */ |
0d381245 | 6599 | if (b->loc |
a5606eee | 6600 | && !is_hardware_watchpoint (b) |
8d3788bd | 6601 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6602 | { |
6603 | struct bp_location *loc; | |
6604 | int n = 1; | |
8d3788bd | 6605 | |
0d381245 | 6606 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6607 | { |
6608 | struct cleanup *inner2 = | |
6609 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6610 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6611 | do_cleanups (inner2); | |
6612 | } | |
0d381245 VP |
6613 | } |
6614 | } | |
6615 | } | |
6616 | ||
a6d9a66e UW |
6617 | static int |
6618 | breakpoint_address_bits (struct breakpoint *b) | |
6619 | { | |
6620 | int print_address_bits = 0; | |
6621 | struct bp_location *loc; | |
6622 | ||
6623 | for (loc = b->loc; loc; loc = loc->next) | |
6624 | { | |
c7437ca6 PA |
6625 | int addr_bit; |
6626 | ||
6627 | /* Software watchpoints that aren't watching memory don't have | |
6628 | an address to print. */ | |
6629 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6630 | continue; | |
6631 | ||
6632 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6633 | if (addr_bit > print_address_bits) |
6634 | print_address_bits = addr_bit; | |
6635 | } | |
6636 | ||
6637 | return print_address_bits; | |
6638 | } | |
0d381245 | 6639 | |
c4093a6a JM |
6640 | struct captured_breakpoint_query_args |
6641 | { | |
6642 | int bnum; | |
6643 | }; | |
c5aa993b | 6644 | |
c4093a6a | 6645 | static int |
2b65245e | 6646 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6647 | { |
6648 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6649 | struct breakpoint *b; |
a6d9a66e | 6650 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6651 | |
c4093a6a JM |
6652 | ALL_BREAKPOINTS (b) |
6653 | { | |
6654 | if (args->bnum == b->number) | |
c5aa993b | 6655 | { |
12c5a436 | 6656 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6657 | return GDB_RC_OK; |
c5aa993b | 6658 | } |
c4093a6a JM |
6659 | } |
6660 | return GDB_RC_NONE; | |
6661 | } | |
c5aa993b | 6662 | |
c4093a6a | 6663 | enum gdb_rc |
4a64f543 MS |
6664 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6665 | char **error_message) | |
c4093a6a JM |
6666 | { |
6667 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6668 | |
c4093a6a JM |
6669 | args.bnum = bnum; |
6670 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6671 | an error. */ |
b0b13bb4 DJ |
6672 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6673 | error_message, RETURN_MASK_ALL) < 0) | |
6674 | return GDB_RC_FAIL; | |
6675 | else | |
6676 | return GDB_RC_OK; | |
c4093a6a | 6677 | } |
c5aa993b | 6678 | |
09d682a4 TT |
6679 | /* Return true if this breakpoint was set by the user, false if it is |
6680 | internal or momentary. */ | |
6681 | ||
6682 | int | |
6683 | user_breakpoint_p (struct breakpoint *b) | |
6684 | { | |
46c6471b | 6685 | return b->number > 0; |
09d682a4 TT |
6686 | } |
6687 | ||
7f3b0473 | 6688 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6689 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6690 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6691 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6692 | ones for which it returns non-zero. Return the total number of | |
6693 | breakpoints listed. */ | |
c906108c | 6694 | |
d77f58be | 6695 | static int |
e5a67952 | 6696 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6697 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6698 | { |
52f0bd74 | 6699 | struct breakpoint *b; |
a6d9a66e | 6700 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6701 | int nr_printable_breakpoints; |
3b31d625 | 6702 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6703 | struct value_print_options opts; |
a6d9a66e | 6704 | int print_address_bits = 0; |
269b11a2 | 6705 | int print_type_col_width = 14; |
79a45e25 | 6706 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6707 | |
79a45b7d TT |
6708 | get_user_print_options (&opts); |
6709 | ||
4a64f543 MS |
6710 | /* Compute the number of rows in the table, as well as the size |
6711 | required for address fields. */ | |
7f3b0473 AC |
6712 | nr_printable_breakpoints = 0; |
6713 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6714 | { |
6715 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6716 | if (filter && !filter (b)) | |
6717 | continue; | |
6718 | ||
6719 | /* If we have an "args" string, it is a list of breakpoints to | |
6720 | accept. Skip the others. */ | |
6721 | if (args != NULL && *args != '\0') | |
6722 | { | |
6723 | if (allflag && parse_and_eval_long (args) != b->number) | |
6724 | continue; | |
6725 | if (!allflag && !number_is_in_list (args, b->number)) | |
6726 | continue; | |
6727 | } | |
269b11a2 | 6728 | |
e5a67952 MS |
6729 | if (allflag || user_breakpoint_p (b)) |
6730 | { | |
6731 | int addr_bit, type_len; | |
a6d9a66e | 6732 | |
e5a67952 MS |
6733 | addr_bit = breakpoint_address_bits (b); |
6734 | if (addr_bit > print_address_bits) | |
6735 | print_address_bits = addr_bit; | |
269b11a2 | 6736 | |
e5a67952 MS |
6737 | type_len = strlen (bptype_string (b->type)); |
6738 | if (type_len > print_type_col_width) | |
6739 | print_type_col_width = type_len; | |
6740 | ||
6741 | nr_printable_breakpoints++; | |
6742 | } | |
6743 | } | |
7f3b0473 | 6744 | |
79a45b7d | 6745 | if (opts.addressprint) |
3b31d625 | 6746 | bkpttbl_chain |
3e43a32a MS |
6747 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6748 | nr_printable_breakpoints, | |
3b31d625 | 6749 | "BreakpointTable"); |
8b93c638 | 6750 | else |
3b31d625 | 6751 | bkpttbl_chain |
3e43a32a MS |
6752 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6753 | nr_printable_breakpoints, | |
3b31d625 | 6754 | "BreakpointTable"); |
8b93c638 | 6755 | |
7f3b0473 | 6756 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6757 | annotate_breakpoints_headers (); |
6758 | if (nr_printable_breakpoints > 0) | |
6759 | annotate_field (0); | |
4a64f543 | 6760 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6761 | if (nr_printable_breakpoints > 0) |
6762 | annotate_field (1); | |
269b11a2 | 6763 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6764 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6765 | if (nr_printable_breakpoints > 0) |
6766 | annotate_field (2); | |
4a64f543 | 6767 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6768 | if (nr_printable_breakpoints > 0) |
6769 | annotate_field (3); | |
54e52265 | 6770 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6771 | if (opts.addressprint) |
e5a67952 MS |
6772 | { |
6773 | if (nr_printable_breakpoints > 0) | |
6774 | annotate_field (4); | |
6775 | if (print_address_bits <= 32) | |
6776 | ui_out_table_header (uiout, 10, ui_left, | |
6777 | "addr", "Address"); /* 5 */ | |
6778 | else | |
6779 | ui_out_table_header (uiout, 18, ui_left, | |
6780 | "addr", "Address"); /* 5 */ | |
6781 | } | |
d7faa9e7 AC |
6782 | if (nr_printable_breakpoints > 0) |
6783 | annotate_field (5); | |
6784 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6785 | ui_out_table_body (uiout); | |
6786 | if (nr_printable_breakpoints > 0) | |
6787 | annotate_breakpoints_table (); | |
7f3b0473 | 6788 | |
c4093a6a | 6789 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6790 | { |
6791 | QUIT; | |
6792 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6793 | if (filter && !filter (b)) | |
6794 | continue; | |
6795 | ||
6796 | /* If we have an "args" string, it is a list of breakpoints to | |
6797 | accept. Skip the others. */ | |
6798 | ||
6799 | if (args != NULL && *args != '\0') | |
6800 | { | |
6801 | if (allflag) /* maintenance info breakpoint */ | |
6802 | { | |
6803 | if (parse_and_eval_long (args) != b->number) | |
6804 | continue; | |
6805 | } | |
6806 | else /* all others */ | |
6807 | { | |
6808 | if (!number_is_in_list (args, b->number)) | |
6809 | continue; | |
6810 | } | |
6811 | } | |
6812 | /* We only print out user settable breakpoints unless the | |
6813 | allflag is set. */ | |
6814 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6815 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6816 | } |
6817 | ||
3b31d625 | 6818 | do_cleanups (bkpttbl_chain); |
698384cd | 6819 | |
7f3b0473 | 6820 | if (nr_printable_breakpoints == 0) |
c906108c | 6821 | { |
4a64f543 MS |
6822 | /* If there's a filter, let the caller decide how to report |
6823 | empty list. */ | |
d77f58be SS |
6824 | if (!filter) |
6825 | { | |
e5a67952 | 6826 | if (args == NULL || *args == '\0') |
d77f58be SS |
6827 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6828 | else | |
4a64f543 | 6829 | ui_out_message (uiout, 0, |
e5a67952 MS |
6830 | "No breakpoint or watchpoint matching '%s'.\n", |
6831 | args); | |
d77f58be | 6832 | } |
c906108c SS |
6833 | } |
6834 | else | |
c4093a6a | 6835 | { |
a6d9a66e UW |
6836 | if (last_loc && !server_command) |
6837 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6838 | } |
c906108c | 6839 | |
4a64f543 | 6840 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6841 | there have been breakpoints? */ |
c906108c | 6842 | annotate_breakpoints_table_end (); |
d77f58be SS |
6843 | |
6844 | return nr_printable_breakpoints; | |
c906108c SS |
6845 | } |
6846 | ||
ad443146 SS |
6847 | /* Display the value of default-collect in a way that is generally |
6848 | compatible with the breakpoint list. */ | |
6849 | ||
6850 | static void | |
6851 | default_collect_info (void) | |
6852 | { | |
79a45e25 PA |
6853 | struct ui_out *uiout = current_uiout; |
6854 | ||
ad443146 SS |
6855 | /* If it has no value (which is frequently the case), say nothing; a |
6856 | message like "No default-collect." gets in user's face when it's | |
6857 | not wanted. */ | |
6858 | if (!*default_collect) | |
6859 | return; | |
6860 | ||
6861 | /* The following phrase lines up nicely with per-tracepoint collect | |
6862 | actions. */ | |
6863 | ui_out_text (uiout, "default collect "); | |
6864 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6865 | ui_out_text (uiout, " \n"); | |
6866 | } | |
6867 | ||
c906108c | 6868 | static void |
e5a67952 | 6869 | breakpoints_info (char *args, int from_tty) |
c906108c | 6870 | { |
e5a67952 | 6871 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6872 | |
6873 | default_collect_info (); | |
d77f58be SS |
6874 | } |
6875 | ||
6876 | static void | |
e5a67952 | 6877 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6878 | { |
e5a67952 | 6879 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6880 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6881 | |
6882 | if (num_printed == 0) | |
6883 | { | |
e5a67952 | 6884 | if (args == NULL || *args == '\0') |
d77f58be SS |
6885 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6886 | else | |
e5a67952 | 6887 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6888 | } |
c906108c SS |
6889 | } |
6890 | ||
7a292a7a | 6891 | static void |
e5a67952 | 6892 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6893 | { |
e5a67952 | 6894 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6895 | |
6896 | default_collect_info (); | |
c906108c SS |
6897 | } |
6898 | ||
0d381245 | 6899 | static int |
714835d5 | 6900 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6901 | struct program_space *pspace, |
714835d5 | 6902 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6903 | { |
6904 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6905 | |
0d381245 VP |
6906 | for (; bl; bl = bl->next) |
6907 | { | |
6c95b8df PA |
6908 | if (bl->pspace == pspace |
6909 | && bl->address == pc | |
0d381245 VP |
6910 | && (!overlay_debugging || bl->section == section)) |
6911 | return 1; | |
6912 | } | |
6913 | return 0; | |
6914 | } | |
6915 | ||
672f9b60 | 6916 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6917 | concerns with logical breakpoints, so we match program spaces, not |
6918 | address spaces. */ | |
c906108c SS |
6919 | |
6920 | static void | |
6c95b8df PA |
6921 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6922 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6923 | struct obj_section *section, int thread) |
c906108c | 6924 | { |
52f0bd74 AC |
6925 | int others = 0; |
6926 | struct breakpoint *b; | |
c906108c SS |
6927 | |
6928 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6929 | others += (user_breakpoint_p (b) |
6930 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6931 | if (others > 0) |
6932 | { | |
a3f17187 AC |
6933 | if (others == 1) |
6934 | printf_filtered (_("Note: breakpoint ")); | |
6935 | else /* if (others == ???) */ | |
6936 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6937 | ALL_BREAKPOINTS (b) |
672f9b60 | 6938 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6939 | { |
6940 | others--; | |
6941 | printf_filtered ("%d", b->number); | |
6942 | if (b->thread == -1 && thread != -1) | |
6943 | printf_filtered (" (all threads)"); | |
6944 | else if (b->thread != -1) | |
6945 | printf_filtered (" (thread %d)", b->thread); | |
6946 | printf_filtered ("%s%s ", | |
059fb39f | 6947 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6948 | || b->enable_state == bp_call_disabled) |
0d381245 | 6949 | ? " (disabled)" |
0d381245 VP |
6950 | : ""), |
6951 | (others > 1) ? "," | |
6952 | : ((others == 1) ? " and" : "")); | |
6953 | } | |
a3f17187 | 6954 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6955 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6956 | printf_filtered (".\n"); |
6957 | } | |
6958 | } | |
6959 | \f | |
c906108c | 6960 | |
e4f237da KB |
6961 | /* Return true iff it is meaningful to use the address member of |
6962 | BPT. For some breakpoint types, the address member is irrelevant | |
6963 | and it makes no sense to attempt to compare it to other addresses | |
6964 | (or use it for any other purpose either). | |
6965 | ||
4a64f543 MS |
6966 | More specifically, each of the following breakpoint types will |
6967 | always have a zero valued address and we don't want to mark | |
6968 | breakpoints of any of these types to be a duplicate of an actual | |
6969 | breakpoint at address zero: | |
e4f237da KB |
6970 | |
6971 | bp_watchpoint | |
2d134ed3 PA |
6972 | bp_catchpoint |
6973 | ||
6974 | */ | |
e4f237da KB |
6975 | |
6976 | static int | |
6977 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6978 | { | |
6979 | enum bptype type = bpt->type; | |
6980 | ||
2d134ed3 PA |
6981 | return (type != bp_watchpoint && type != bp_catchpoint); |
6982 | } | |
6983 | ||
6984 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6985 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6986 | ||
6987 | static int | |
4a64f543 MS |
6988 | watchpoint_locations_match (struct bp_location *loc1, |
6989 | struct bp_location *loc2) | |
2d134ed3 | 6990 | { |
3a5c3e22 PA |
6991 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6992 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6993 | ||
6994 | /* Both of them must exist. */ | |
6995 | gdb_assert (w1 != NULL); | |
6996 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6997 | |
4a64f543 MS |
6998 | /* If the target can evaluate the condition expression in hardware, |
6999 | then we we need to insert both watchpoints even if they are at | |
7000 | the same place. Otherwise the watchpoint will only trigger when | |
7001 | the condition of whichever watchpoint was inserted evaluates to | |
7002 | true, not giving a chance for GDB to check the condition of the | |
7003 | other watchpoint. */ | |
3a5c3e22 | 7004 | if ((w1->cond_exp |
4a64f543 MS |
7005 | && target_can_accel_watchpoint_condition (loc1->address, |
7006 | loc1->length, | |
0cf6dd15 | 7007 | loc1->watchpoint_type, |
3a5c3e22 PA |
7008 | w1->cond_exp)) |
7009 | || (w2->cond_exp | |
4a64f543 MS |
7010 | && target_can_accel_watchpoint_condition (loc2->address, |
7011 | loc2->length, | |
0cf6dd15 | 7012 | loc2->watchpoint_type, |
3a5c3e22 | 7013 | w2->cond_exp))) |
0cf6dd15 TJB |
7014 | return 0; |
7015 | ||
85d721b8 PA |
7016 | /* Note that this checks the owner's type, not the location's. In |
7017 | case the target does not support read watchpoints, but does | |
7018 | support access watchpoints, we'll have bp_read_watchpoint | |
7019 | watchpoints with hw_access locations. Those should be considered | |
7020 | duplicates of hw_read locations. The hw_read locations will | |
7021 | become hw_access locations later. */ | |
2d134ed3 PA |
7022 | return (loc1->owner->type == loc2->owner->type |
7023 | && loc1->pspace->aspace == loc2->pspace->aspace | |
7024 | && loc1->address == loc2->address | |
7025 | && loc1->length == loc2->length); | |
e4f237da KB |
7026 | } |
7027 | ||
31e77af2 | 7028 | /* See breakpoint.h. */ |
6c95b8df | 7029 | |
31e77af2 | 7030 | int |
6c95b8df PA |
7031 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
7032 | struct address_space *aspace2, CORE_ADDR addr2) | |
7033 | { | |
f5656ead | 7034 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
7035 | || aspace1 == aspace2) |
7036 | && addr1 == addr2); | |
7037 | } | |
7038 | ||
f1310107 TJB |
7039 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
7040 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
7041 | matches ASPACE2. On targets that have global breakpoints, the address | |
7042 | space doesn't really matter. */ | |
7043 | ||
7044 | static int | |
7045 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
7046 | int len1, struct address_space *aspace2, | |
7047 | CORE_ADDR addr2) | |
7048 | { | |
f5656ead | 7049 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7050 | || aspace1 == aspace2) |
7051 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7052 | } | |
7053 | ||
7054 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7055 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7056 | matches the breakpoint's address space. On targets that have global | |
7057 | breakpoints, the address space doesn't really matter. */ | |
7058 | ||
7059 | static int | |
7060 | breakpoint_location_address_match (struct bp_location *bl, | |
7061 | struct address_space *aspace, | |
7062 | CORE_ADDR addr) | |
7063 | { | |
7064 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7065 | aspace, addr) | |
7066 | || (bl->length | |
7067 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7068 | bl->address, bl->length, | |
7069 | aspace, addr))); | |
7070 | } | |
7071 | ||
1e4d1764 YQ |
7072 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7073 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7074 | true, otherwise returns false. */ | |
7075 | ||
7076 | static int | |
7077 | tracepoint_locations_match (struct bp_location *loc1, | |
7078 | struct bp_location *loc2) | |
7079 | { | |
7080 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7081 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7082 | locations at the same address of different tracepoints are regarded as | |
7083 | different locations. */ | |
7084 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7085 | else | |
7086 | return 0; | |
7087 | } | |
7088 | ||
2d134ed3 PA |
7089 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
7090 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
7091 | represent the same location. */ | |
7092 | ||
7093 | static int | |
4a64f543 MS |
7094 | breakpoint_locations_match (struct bp_location *loc1, |
7095 | struct bp_location *loc2) | |
2d134ed3 | 7096 | { |
2bdf28a0 JK |
7097 | int hw_point1, hw_point2; |
7098 | ||
7099 | /* Both of them must not be in moribund_locations. */ | |
7100 | gdb_assert (loc1->owner != NULL); | |
7101 | gdb_assert (loc2->owner != NULL); | |
7102 | ||
7103 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7104 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7105 | |
7106 | if (hw_point1 != hw_point2) | |
7107 | return 0; | |
7108 | else if (hw_point1) | |
7109 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7110 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7111 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7112 | else |
f1310107 TJB |
7113 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
7114 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
7115 | loc2->pspace->aspace, loc2->address) | |
7116 | && loc1->length == loc2->length); | |
2d134ed3 PA |
7117 | } |
7118 | ||
76897487 KB |
7119 | static void |
7120 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
7121 | int bnum, int have_bnum) | |
7122 | { | |
f63fbe86 MS |
7123 | /* The longest string possibly returned by hex_string_custom |
7124 | is 50 chars. These must be at least that big for safety. */ | |
7125 | char astr1[64]; | |
7126 | char astr2[64]; | |
76897487 | 7127 | |
bb599908 PH |
7128 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7129 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7130 | if (have_bnum) |
8a3fe4f8 | 7131 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7132 | bnum, astr1, astr2); |
7133 | else | |
8a3fe4f8 | 7134 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7135 | } |
7136 | ||
4a64f543 MS |
7137 | /* Adjust a breakpoint's address to account for architectural |
7138 | constraints on breakpoint placement. Return the adjusted address. | |
7139 | Note: Very few targets require this kind of adjustment. For most | |
7140 | targets, this function is simply the identity function. */ | |
76897487 KB |
7141 | |
7142 | static CORE_ADDR | |
a6d9a66e UW |
7143 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7144 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7145 | { |
a6d9a66e | 7146 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7147 | { |
7148 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7149 | return bpaddr; | |
7150 | } | |
88f7da05 KB |
7151 | else if (bptype == bp_watchpoint |
7152 | || bptype == bp_hardware_watchpoint | |
7153 | || bptype == bp_read_watchpoint | |
7154 | || bptype == bp_access_watchpoint | |
fe798b75 | 7155 | || bptype == bp_catchpoint) |
88f7da05 KB |
7156 | { |
7157 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7158 | have their addresses modified. */ | |
7159 | return bpaddr; | |
7160 | } | |
7c16b83e PA |
7161 | else if (bptype == bp_single_step) |
7162 | { | |
7163 | /* Single-step breakpoints should not have their addresses | |
7164 | modified. If there's any architectural constrain that | |
7165 | applies to this address, then it should have already been | |
7166 | taken into account when the breakpoint was created in the | |
7167 | first place. If we didn't do this, stepping through e.g., | |
7168 | Thumb-2 IT blocks would break. */ | |
7169 | return bpaddr; | |
7170 | } | |
76897487 KB |
7171 | else |
7172 | { | |
7173 | CORE_ADDR adjusted_bpaddr; | |
7174 | ||
7175 | /* Some targets have architectural constraints on the placement | |
7176 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7177 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7178 | |
7179 | /* An adjusted breakpoint address can significantly alter | |
7180 | a user's expectations. Print a warning if an adjustment | |
7181 | is required. */ | |
7182 | if (adjusted_bpaddr != bpaddr) | |
7183 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7184 | ||
7185 | return adjusted_bpaddr; | |
7186 | } | |
7187 | } | |
7188 | ||
28010a5d PA |
7189 | void |
7190 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
7191 | struct breakpoint *owner) | |
7cc221ef | 7192 | { |
7cc221ef DJ |
7193 | memset (loc, 0, sizeof (*loc)); |
7194 | ||
348d480f PA |
7195 | gdb_assert (ops != NULL); |
7196 | ||
28010a5d PA |
7197 | loc->ops = ops; |
7198 | loc->owner = owner; | |
511a6cd4 | 7199 | loc->cond = NULL; |
b775012e | 7200 | loc->cond_bytecode = NULL; |
0d381245 VP |
7201 | loc->shlib_disabled = 0; |
7202 | loc->enabled = 1; | |
e049a4b5 | 7203 | |
28010a5d | 7204 | switch (owner->type) |
e049a4b5 DJ |
7205 | { |
7206 | case bp_breakpoint: | |
7c16b83e | 7207 | case bp_single_step: |
e049a4b5 DJ |
7208 | case bp_until: |
7209 | case bp_finish: | |
7210 | case bp_longjmp: | |
7211 | case bp_longjmp_resume: | |
e2e4d78b | 7212 | case bp_longjmp_call_dummy: |
186c406b TT |
7213 | case bp_exception: |
7214 | case bp_exception_resume: | |
e049a4b5 | 7215 | case bp_step_resume: |
2c03e5be | 7216 | case bp_hp_step_resume: |
e049a4b5 DJ |
7217 | case bp_watchpoint_scope: |
7218 | case bp_call_dummy: | |
aa7d318d | 7219 | case bp_std_terminate: |
e049a4b5 DJ |
7220 | case bp_shlib_event: |
7221 | case bp_thread_event: | |
7222 | case bp_overlay_event: | |
4efc6507 | 7223 | case bp_jit_event: |
0fd8e87f | 7224 | case bp_longjmp_master: |
aa7d318d | 7225 | case bp_std_terminate_master: |
186c406b | 7226 | case bp_exception_master: |
0e30163f JK |
7227 | case bp_gnu_ifunc_resolver: |
7228 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7229 | case bp_dprintf: |
e049a4b5 | 7230 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7231 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7232 | break; |
7233 | case bp_hardware_breakpoint: | |
7234 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7235 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7236 | break; |
7237 | case bp_hardware_watchpoint: | |
7238 | case bp_read_watchpoint: | |
7239 | case bp_access_watchpoint: | |
7240 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7241 | break; | |
7242 | case bp_watchpoint: | |
ce78b96d | 7243 | case bp_catchpoint: |
15c3d785 PA |
7244 | case bp_tracepoint: |
7245 | case bp_fast_tracepoint: | |
0fb4aa4b | 7246 | case bp_static_tracepoint: |
e049a4b5 DJ |
7247 | loc->loc_type = bp_loc_other; |
7248 | break; | |
7249 | default: | |
e2e0b3e5 | 7250 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7251 | } |
7252 | ||
f431efe5 | 7253 | loc->refc = 1; |
28010a5d PA |
7254 | } |
7255 | ||
7256 | /* Allocate a struct bp_location. */ | |
7257 | ||
7258 | static struct bp_location * | |
7259 | allocate_bp_location (struct breakpoint *bpt) | |
7260 | { | |
348d480f PA |
7261 | return bpt->ops->allocate_location (bpt); |
7262 | } | |
7cc221ef | 7263 | |
f431efe5 PA |
7264 | static void |
7265 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7266 | { |
348d480f | 7267 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
7268 | xfree (loc); |
7269 | } | |
7270 | ||
f431efe5 PA |
7271 | /* Increment reference count. */ |
7272 | ||
7273 | static void | |
7274 | incref_bp_location (struct bp_location *bl) | |
7275 | { | |
7276 | ++bl->refc; | |
7277 | } | |
7278 | ||
7279 | /* Decrement reference count. If the reference count reaches 0, | |
7280 | destroy the bp_location. Sets *BLP to NULL. */ | |
7281 | ||
7282 | static void | |
7283 | decref_bp_location (struct bp_location **blp) | |
7284 | { | |
0807b50c PA |
7285 | gdb_assert ((*blp)->refc > 0); |
7286 | ||
f431efe5 PA |
7287 | if (--(*blp)->refc == 0) |
7288 | free_bp_location (*blp); | |
7289 | *blp = NULL; | |
7290 | } | |
7291 | ||
346774a9 | 7292 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7293 | |
346774a9 PA |
7294 | static void |
7295 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 7296 | { |
346774a9 | 7297 | struct breakpoint *b1; |
c906108c | 7298 | |
346774a9 PA |
7299 | /* Add this breakpoint to the end of the chain so that a list of |
7300 | breakpoints will come out in order of increasing numbers. */ | |
7301 | ||
7302 | b1 = breakpoint_chain; | |
7303 | if (b1 == 0) | |
7304 | breakpoint_chain = b; | |
7305 | else | |
7306 | { | |
7307 | while (b1->next) | |
7308 | b1 = b1->next; | |
7309 | b1->next = b; | |
7310 | } | |
7311 | } | |
7312 | ||
7313 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7314 | ||
7315 | static void | |
7316 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7317 | struct gdbarch *gdbarch, | |
28010a5d | 7318 | enum bptype bptype, |
c0a91b2b | 7319 | const struct breakpoint_ops *ops) |
346774a9 | 7320 | { |
c906108c | 7321 | memset (b, 0, sizeof (*b)); |
2219d63c | 7322 | |
348d480f PA |
7323 | gdb_assert (ops != NULL); |
7324 | ||
28010a5d | 7325 | b->ops = ops; |
4d28f7a8 | 7326 | b->type = bptype; |
a6d9a66e | 7327 | b->gdbarch = gdbarch; |
c906108c SS |
7328 | b->language = current_language->la_language; |
7329 | b->input_radix = input_radix; | |
7330 | b->thread = -1; | |
b5de0fa7 | 7331 | b->enable_state = bp_enabled; |
c906108c SS |
7332 | b->next = 0; |
7333 | b->silent = 0; | |
7334 | b->ignore_count = 0; | |
7335 | b->commands = NULL; | |
818dd999 | 7336 | b->frame_id = null_frame_id; |
0d381245 | 7337 | b->condition_not_parsed = 0; |
84f4c1fe | 7338 | b->py_bp_object = NULL; |
d0fb5eae | 7339 | b->related_breakpoint = b; |
f00aae0f | 7340 | b->location = NULL; |
346774a9 PA |
7341 | } |
7342 | ||
7343 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7344 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7345 | |
7346 | static struct breakpoint * | |
7347 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7348 | enum bptype bptype, |
c0a91b2b | 7349 | const struct breakpoint_ops *ops) |
346774a9 PA |
7350 | { |
7351 | struct breakpoint *b = XNEW (struct breakpoint); | |
7352 | ||
348d480f | 7353 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 7354 | add_to_breakpoint_chain (b); |
0d381245 VP |
7355 | return b; |
7356 | } | |
7357 | ||
0e30163f JK |
7358 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7359 | resolutions should be made as the user specified the location explicitly | |
7360 | enough. */ | |
7361 | ||
0d381245 | 7362 | static void |
0e30163f | 7363 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7364 | { |
2bdf28a0 JK |
7365 | gdb_assert (loc->owner != NULL); |
7366 | ||
0d381245 | 7367 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7368 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7369 | || is_tracepoint (loc->owner)) |
0d381245 | 7370 | { |
0e30163f | 7371 | int is_gnu_ifunc; |
2c02bd72 | 7372 | const char *function_name; |
6a3a010b | 7373 | CORE_ADDR func_addr; |
0e30163f | 7374 | |
2c02bd72 | 7375 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7376 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7377 | |
7378 | if (is_gnu_ifunc && !explicit_loc) | |
7379 | { | |
7380 | struct breakpoint *b = loc->owner; | |
7381 | ||
7382 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7383 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7384 | &loc->requested_address)) |
7385 | { | |
7386 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7387 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7388 | loc->requested_address, | |
7389 | b->type); | |
7390 | } | |
7391 | else if (b->type == bp_breakpoint && b->loc == loc | |
7392 | && loc->next == NULL && b->related_breakpoint == b) | |
7393 | { | |
7394 | /* Create only the whole new breakpoint of this type but do not | |
7395 | mess more complicated breakpoints with multiple locations. */ | |
7396 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7397 | /* Remember the resolver's address for use by the return |
7398 | breakpoint. */ | |
7399 | loc->related_address = func_addr; | |
0e30163f JK |
7400 | } |
7401 | } | |
7402 | ||
2c02bd72 DE |
7403 | if (function_name) |
7404 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7405 | } |
7406 | } | |
7407 | ||
a6d9a66e | 7408 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7409 | struct gdbarch * |
a6d9a66e UW |
7410 | get_sal_arch (struct symtab_and_line sal) |
7411 | { | |
7412 | if (sal.section) | |
7413 | return get_objfile_arch (sal.section->objfile); | |
7414 | if (sal.symtab) | |
eb822aa6 | 7415 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7416 | |
7417 | return NULL; | |
7418 | } | |
7419 | ||
346774a9 PA |
7420 | /* Low level routine for partially initializing a breakpoint of type |
7421 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7422 | file name, and line number are provided by SAL. |
0d381245 VP |
7423 | |
7424 | It is expected that the caller will complete the initialization of | |
7425 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7426 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7427 | |
346774a9 PA |
7428 | static void |
7429 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7430 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7431 | const struct breakpoint_ops *ops) |
0d381245 | 7432 | { |
28010a5d | 7433 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7434 | |
3742cc8b | 7435 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7436 | |
6c95b8df PA |
7437 | if (bptype != bp_catchpoint) |
7438 | gdb_assert (sal.pspace != NULL); | |
7439 | ||
f8eba3c6 TT |
7440 | /* Store the program space that was used to set the breakpoint, |
7441 | except for ordinary breakpoints, which are independent of the | |
7442 | program space. */ | |
7443 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7444 | b->pspace = sal.pspace; | |
346774a9 | 7445 | } |
c906108c | 7446 | |
346774a9 PA |
7447 | /* set_raw_breakpoint is a low level routine for allocating and |
7448 | partially initializing a breakpoint of type BPTYPE. The newly | |
7449 | created breakpoint's address, section, source file name, and line | |
7450 | number are provided by SAL. The newly created and partially | |
7451 | initialized breakpoint is added to the breakpoint chain and | |
7452 | is also returned as the value of this function. | |
7453 | ||
7454 | It is expected that the caller will complete the initialization of | |
7455 | the newly created breakpoint struct as well as output any status | |
7456 | information regarding the creation of a new breakpoint. In | |
7457 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7458 | number! Care should be taken to not allow an error to occur | |
7459 | prior to completing the initialization of the breakpoint. If this | |
7460 | should happen, a bogus breakpoint will be left on the chain. */ | |
7461 | ||
7462 | struct breakpoint * | |
7463 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7464 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7465 | const struct breakpoint_ops *ops) |
346774a9 PA |
7466 | { |
7467 | struct breakpoint *b = XNEW (struct breakpoint); | |
7468 | ||
348d480f | 7469 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7470 | add_to_breakpoint_chain (b); |
c906108c SS |
7471 | return b; |
7472 | } | |
7473 | ||
53a5351d | 7474 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7475 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7476 | initiated the operation. */ | |
c906108c SS |
7477 | |
7478 | void | |
186c406b | 7479 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7480 | { |
35df4500 | 7481 | struct breakpoint *b, *b_tmp; |
186c406b | 7482 | int thread = tp->num; |
0fd8e87f UW |
7483 | |
7484 | /* To avoid having to rescan all objfile symbols at every step, | |
7485 | we maintain a list of continually-inserted but always disabled | |
7486 | longjmp "master" breakpoints. Here, we simply create momentary | |
7487 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7488 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7489 | if (b->pspace == current_program_space |
186c406b TT |
7490 | && (b->type == bp_longjmp_master |
7491 | || b->type == bp_exception_master)) | |
0fd8e87f | 7492 | { |
06edf0c0 PA |
7493 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7494 | struct breakpoint *clone; | |
cc59ec59 | 7495 | |
e2e4d78b JK |
7496 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7497 | after their removal. */ | |
06edf0c0 | 7498 | clone = momentary_breakpoint_from_master (b, type, |
a1aa2221 | 7499 | &longjmp_breakpoint_ops, 1); |
0fd8e87f UW |
7500 | clone->thread = thread; |
7501 | } | |
186c406b TT |
7502 | |
7503 | tp->initiating_frame = frame; | |
c906108c SS |
7504 | } |
7505 | ||
611c83ae | 7506 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7507 | void |
611c83ae | 7508 | delete_longjmp_breakpoint (int thread) |
c906108c | 7509 | { |
35df4500 | 7510 | struct breakpoint *b, *b_tmp; |
c906108c | 7511 | |
35df4500 | 7512 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7513 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7514 | { |
7515 | if (b->thread == thread) | |
7516 | delete_breakpoint (b); | |
7517 | } | |
c906108c SS |
7518 | } |
7519 | ||
f59f708a PA |
7520 | void |
7521 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7522 | { | |
7523 | struct breakpoint *b, *b_tmp; | |
7524 | ||
7525 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7526 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7527 | { | |
7528 | if (b->thread == thread) | |
7529 | b->disposition = disp_del_at_next_stop; | |
7530 | } | |
7531 | } | |
7532 | ||
e2e4d78b JK |
7533 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7534 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7535 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7536 | breakpoints. */ | |
7537 | ||
7538 | struct breakpoint * | |
7539 | set_longjmp_breakpoint_for_call_dummy (void) | |
7540 | { | |
7541 | struct breakpoint *b, *retval = NULL; | |
7542 | ||
7543 | ALL_BREAKPOINTS (b) | |
7544 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7545 | { | |
7546 | struct breakpoint *new_b; | |
7547 | ||
7548 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7549 | &momentary_breakpoint_ops, |
7550 | 1); | |
e2e4d78b JK |
7551 | new_b->thread = pid_to_thread_id (inferior_ptid); |
7552 | ||
7553 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7554 | ||
7555 | gdb_assert (new_b->related_breakpoint == new_b); | |
7556 | if (retval == NULL) | |
7557 | retval = new_b; | |
7558 | new_b->related_breakpoint = retval; | |
7559 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7560 | retval = retval->related_breakpoint; | |
7561 | retval->related_breakpoint = new_b; | |
7562 | } | |
7563 | ||
7564 | return retval; | |
7565 | } | |
7566 | ||
7567 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7568 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7569 | stack. |
7570 | ||
7571 | You should call this function only at places where it is safe to currently | |
7572 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7573 | frames. */ | |
7574 | ||
7575 | void | |
b67a2c6f | 7576 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7577 | { |
7578 | struct breakpoint *b, *b_tmp; | |
7579 | ||
7580 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
b67a2c6f | 7581 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->num) |
e2e4d78b JK |
7582 | { |
7583 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7584 | ||
7585 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7586 | dummy_b = dummy_b->related_breakpoint; | |
7587 | if (dummy_b->type != bp_call_dummy | |
7588 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7589 | continue; | |
7590 | ||
b67a2c6f | 7591 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7592 | |
7593 | while (b->related_breakpoint != b) | |
7594 | { | |
7595 | if (b_tmp == b->related_breakpoint) | |
7596 | b_tmp = b->related_breakpoint->next; | |
7597 | delete_breakpoint (b->related_breakpoint); | |
7598 | } | |
7599 | delete_breakpoint (b); | |
7600 | } | |
7601 | } | |
7602 | ||
1900040c MS |
7603 | void |
7604 | enable_overlay_breakpoints (void) | |
7605 | { | |
52f0bd74 | 7606 | struct breakpoint *b; |
1900040c MS |
7607 | |
7608 | ALL_BREAKPOINTS (b) | |
7609 | if (b->type == bp_overlay_event) | |
7610 | { | |
7611 | b->enable_state = bp_enabled; | |
44702360 | 7612 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7613 | overlay_events_enabled = 1; |
1900040c MS |
7614 | } |
7615 | } | |
7616 | ||
7617 | void | |
7618 | disable_overlay_breakpoints (void) | |
7619 | { | |
52f0bd74 | 7620 | struct breakpoint *b; |
1900040c MS |
7621 | |
7622 | ALL_BREAKPOINTS (b) | |
7623 | if (b->type == bp_overlay_event) | |
7624 | { | |
7625 | b->enable_state = bp_disabled; | |
44702360 | 7626 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7627 | overlay_events_enabled = 0; |
1900040c MS |
7628 | } |
7629 | } | |
7630 | ||
aa7d318d TT |
7631 | /* Set an active std::terminate breakpoint for each std::terminate |
7632 | master breakpoint. */ | |
7633 | void | |
7634 | set_std_terminate_breakpoint (void) | |
7635 | { | |
35df4500 | 7636 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7637 | |
35df4500 | 7638 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7639 | if (b->pspace == current_program_space |
7640 | && b->type == bp_std_terminate_master) | |
7641 | { | |
06edf0c0 | 7642 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7643 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7644 | } |
7645 | } | |
7646 | ||
7647 | /* Delete all the std::terminate breakpoints. */ | |
7648 | void | |
7649 | delete_std_terminate_breakpoint (void) | |
7650 | { | |
35df4500 | 7651 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7652 | |
35df4500 | 7653 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7654 | if (b->type == bp_std_terminate) |
7655 | delete_breakpoint (b); | |
7656 | } | |
7657 | ||
c4093a6a | 7658 | struct breakpoint * |
a6d9a66e | 7659 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7660 | { |
7661 | struct breakpoint *b; | |
c4093a6a | 7662 | |
06edf0c0 PA |
7663 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7664 | &internal_breakpoint_ops); | |
7665 | ||
b5de0fa7 | 7666 | b->enable_state = bp_enabled; |
f00aae0f | 7667 | /* location has to be used or breakpoint_re_set will delete me. */ |
a06efdd6 | 7668 | b->location = new_address_location (b->loc->address); |
c4093a6a | 7669 | |
44702360 | 7670 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7671 | |
c4093a6a JM |
7672 | return b; |
7673 | } | |
7674 | ||
7675 | void | |
7676 | remove_thread_event_breakpoints (void) | |
7677 | { | |
35df4500 | 7678 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7679 | |
35df4500 | 7680 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7681 | if (b->type == bp_thread_event |
7682 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7683 | delete_breakpoint (b); |
7684 | } | |
7685 | ||
0101ce28 JJ |
7686 | struct lang_and_radix |
7687 | { | |
7688 | enum language lang; | |
7689 | int radix; | |
7690 | }; | |
7691 | ||
4efc6507 DE |
7692 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7693 | ||
7694 | struct breakpoint * | |
7695 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7696 | { | |
7697 | struct breakpoint *b; | |
7698 | ||
06edf0c0 PA |
7699 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7700 | &internal_breakpoint_ops); | |
44702360 | 7701 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
4efc6507 DE |
7702 | return b; |
7703 | } | |
0101ce28 | 7704 | |
03673fc7 PP |
7705 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7706 | ||
7707 | void | |
7708 | remove_jit_event_breakpoints (void) | |
7709 | { | |
7710 | struct breakpoint *b, *b_tmp; | |
7711 | ||
7712 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7713 | if (b->type == bp_jit_event | |
7714 | && b->loc->pspace == current_program_space) | |
7715 | delete_breakpoint (b); | |
7716 | } | |
7717 | ||
cae688ec JJ |
7718 | void |
7719 | remove_solib_event_breakpoints (void) | |
7720 | { | |
35df4500 | 7721 | struct breakpoint *b, *b_tmp; |
cae688ec | 7722 | |
35df4500 | 7723 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7724 | if (b->type == bp_shlib_event |
7725 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7726 | delete_breakpoint (b); |
7727 | } | |
7728 | ||
f37f681c PA |
7729 | /* See breakpoint.h. */ |
7730 | ||
7731 | void | |
7732 | remove_solib_event_breakpoints_at_next_stop (void) | |
7733 | { | |
7734 | struct breakpoint *b, *b_tmp; | |
7735 | ||
7736 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7737 | if (b->type == bp_shlib_event | |
7738 | && b->loc->pspace == current_program_space) | |
7739 | b->disposition = disp_del_at_next_stop; | |
7740 | } | |
7741 | ||
04086b45 PA |
7742 | /* Helper for create_solib_event_breakpoint / |
7743 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7744 | INSERT_MODE to pass through to update_global_location_list. */ | |
7745 | ||
7746 | static struct breakpoint * | |
7747 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7748 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7749 | { |
7750 | struct breakpoint *b; | |
7751 | ||
06edf0c0 PA |
7752 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7753 | &internal_breakpoint_ops); | |
04086b45 | 7754 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7755 | return b; |
7756 | } | |
7757 | ||
04086b45 PA |
7758 | struct breakpoint * |
7759 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7760 | { | |
7761 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7762 | } | |
7763 | ||
f37f681c PA |
7764 | /* See breakpoint.h. */ |
7765 | ||
7766 | struct breakpoint * | |
7767 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7768 | { | |
7769 | struct breakpoint *b; | |
7770 | ||
04086b45 PA |
7771 | /* Explicitly tell update_global_location_list to insert |
7772 | locations. */ | |
7773 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7774 | if (!b->loc->inserted) |
7775 | { | |
7776 | delete_breakpoint (b); | |
7777 | return NULL; | |
7778 | } | |
7779 | return b; | |
7780 | } | |
7781 | ||
cae688ec JJ |
7782 | /* Disable any breakpoints that are on code in shared libraries. Only |
7783 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7784 | ||
7785 | void | |
cb851954 | 7786 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7787 | { |
876fa593 | 7788 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7789 | |
876fa593 | 7790 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7791 | { |
2bdf28a0 | 7792 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7793 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7794 | |
4a64f543 MS |
7795 | /* We apply the check to all breakpoints, including disabled for |
7796 | those with loc->duplicate set. This is so that when breakpoint | |
7797 | becomes enabled, or the duplicate is removed, gdb will try to | |
7798 | insert all breakpoints. If we don't set shlib_disabled here, | |
7799 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7800 | if (((b->type == bp_breakpoint) |
508ccb1f | 7801 | || (b->type == bp_jit_event) |
1042e4c0 | 7802 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7803 | || (is_tracepoint (b))) |
6c95b8df | 7804 | && loc->pspace == current_program_space |
0d381245 | 7805 | && !loc->shlib_disabled |
6c95b8df | 7806 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7807 | ) |
0d381245 VP |
7808 | { |
7809 | loc->shlib_disabled = 1; | |
7810 | } | |
cae688ec JJ |
7811 | } |
7812 | } | |
7813 | ||
63644780 NB |
7814 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7815 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7816 | disabled ones can just stay disabled. */ | |
84acb35a | 7817 | |
75149521 | 7818 | static void |
84acb35a JJ |
7819 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7820 | { | |
876fa593 | 7821 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7822 | int disabled_shlib_breaks = 0; |
7823 | ||
c86cf029 VP |
7824 | /* SunOS a.out shared libraries are always mapped, so do not |
7825 | disable breakpoints; they will only be reported as unloaded | |
7826 | through clear_solib when GDB discards its shared library | |
7827 | list. See clear_solib for more information. */ | |
7828 | if (exec_bfd != NULL | |
7829 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7830 | return; | |
7831 | ||
876fa593 | 7832 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7833 | { |
2bdf28a0 | 7834 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7835 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7836 | |
1e4d1764 | 7837 | if (solib->pspace == loc->pspace |
e2dd7057 | 7838 | && !loc->shlib_disabled |
1e4d1764 YQ |
7839 | && (((b->type == bp_breakpoint |
7840 | || b->type == bp_jit_event | |
7841 | || b->type == bp_hardware_breakpoint) | |
7842 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7843 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7844 | || is_tracepoint (b)) | |
e2dd7057 | 7845 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7846 | { |
e2dd7057 PP |
7847 | loc->shlib_disabled = 1; |
7848 | /* At this point, we cannot rely on remove_breakpoint | |
7849 | succeeding so we must mark the breakpoint as not inserted | |
7850 | to prevent future errors occurring in remove_breakpoints. */ | |
7851 | loc->inserted = 0; | |
8d3788bd VP |
7852 | |
7853 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7854 | observer_notify_breakpoint_modified (b); | |
7855 | ||
e2dd7057 PP |
7856 | if (!disabled_shlib_breaks) |
7857 | { | |
7858 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7859 | warning (_("Temporarily disabling breakpoints " |
7860 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7861 | solib->so_name); |
84acb35a | 7862 | } |
e2dd7057 | 7863 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7864 | } |
7865 | } | |
84acb35a JJ |
7866 | } |
7867 | ||
63644780 NB |
7868 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7869 | notification of free_objfile. Only apply to enabled breakpoints, | |
7870 | disabled ones can just stay disabled. */ | |
7871 | ||
7872 | static void | |
7873 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7874 | { | |
7875 | struct breakpoint *b; | |
7876 | ||
7877 | if (objfile == NULL) | |
7878 | return; | |
7879 | ||
d03de421 PA |
7880 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7881 | managed by the user with add-symbol-file/remove-symbol-file. | |
7882 | Similarly to how breakpoints in shared libraries are handled in | |
7883 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7884 | shlib_disabled so they end up uninserted on the next global |
7885 | location list update. Shared libraries not loaded by the user | |
7886 | aren't handled here -- they're already handled in | |
7887 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7888 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7889 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7890 | main objfile). */ | |
7891 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7892 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7893 | return; |
7894 | ||
7895 | ALL_BREAKPOINTS (b) | |
7896 | { | |
7897 | struct bp_location *loc; | |
7898 | int bp_modified = 0; | |
7899 | ||
7900 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7901 | continue; | |
7902 | ||
7903 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7904 | { | |
7905 | CORE_ADDR loc_addr = loc->address; | |
7906 | ||
7907 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7908 | && loc->loc_type != bp_loc_software_breakpoint) | |
7909 | continue; | |
7910 | ||
7911 | if (loc->shlib_disabled != 0) | |
7912 | continue; | |
7913 | ||
7914 | if (objfile->pspace != loc->pspace) | |
7915 | continue; | |
7916 | ||
7917 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7918 | && loc->loc_type != bp_loc_software_breakpoint) | |
7919 | continue; | |
7920 | ||
7921 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7922 | { | |
7923 | loc->shlib_disabled = 1; | |
08351840 PA |
7924 | /* At this point, we don't know whether the object was |
7925 | unmapped from the inferior or not, so leave the | |
7926 | inserted flag alone. We'll handle failure to | |
7927 | uninsert quietly, in case the object was indeed | |
7928 | unmapped. */ | |
63644780 NB |
7929 | |
7930 | mark_breakpoint_location_modified (loc); | |
7931 | ||
7932 | bp_modified = 1; | |
7933 | } | |
7934 | } | |
7935 | ||
7936 | if (bp_modified) | |
7937 | observer_notify_breakpoint_modified (b); | |
7938 | } | |
7939 | } | |
7940 | ||
ce78b96d JB |
7941 | /* FORK & VFORK catchpoints. */ |
7942 | ||
e29a4733 PA |
7943 | /* An instance of this type is used to represent a fork or vfork |
7944 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7945 | class; users downcast to "struct breakpoint *" when needed. A | |
7946 | breakpoint is really of this type iff its ops pointer points to | |
7947 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7948 | ||
7949 | struct fork_catchpoint | |
7950 | { | |
7951 | /* The base class. */ | |
7952 | struct breakpoint base; | |
7953 | ||
7954 | /* Process id of a child process whose forking triggered this | |
7955 | catchpoint. This field is only valid immediately after this | |
7956 | catchpoint has triggered. */ | |
7957 | ptid_t forked_inferior_pid; | |
7958 | }; | |
7959 | ||
4a64f543 MS |
7960 | /* Implement the "insert" breakpoint_ops method for fork |
7961 | catchpoints. */ | |
ce78b96d | 7962 | |
77b06cd7 TJB |
7963 | static int |
7964 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7965 | { |
dfd4cc63 | 7966 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7967 | } |
7968 | ||
4a64f543 MS |
7969 | /* Implement the "remove" breakpoint_ops method for fork |
7970 | catchpoints. */ | |
ce78b96d JB |
7971 | |
7972 | static int | |
77b06cd7 | 7973 | remove_catch_fork (struct bp_location *bl) |
ce78b96d | 7974 | { |
dfd4cc63 | 7975 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7976 | } |
7977 | ||
7978 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7979 | catchpoints. */ | |
7980 | ||
7981 | static int | |
f1310107 | 7982 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7983 | struct address_space *aspace, CORE_ADDR bp_addr, |
7984 | const struct target_waitstatus *ws) | |
ce78b96d | 7985 | { |
e29a4733 PA |
7986 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7987 | ||
f90263c1 TT |
7988 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7989 | return 0; | |
7990 | ||
7991 | c->forked_inferior_pid = ws->value.related_pid; | |
7992 | return 1; | |
ce78b96d JB |
7993 | } |
7994 | ||
4a64f543 MS |
7995 | /* Implement the "print_it" breakpoint_ops method for fork |
7996 | catchpoints. */ | |
ce78b96d JB |
7997 | |
7998 | static enum print_stop_action | |
348d480f | 7999 | print_it_catch_fork (bpstat bs) |
ce78b96d | 8000 | { |
36dfb11c | 8001 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8002 | struct breakpoint *b = bs->breakpoint_at; |
8003 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 8004 | |
ce78b96d | 8005 | annotate_catchpoint (b->number); |
36dfb11c TT |
8006 | if (b->disposition == disp_del) |
8007 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8008 | else | |
8009 | ui_out_text (uiout, "\nCatchpoint "); | |
8010 | if (ui_out_is_mi_like_p (uiout)) | |
8011 | { | |
8012 | ui_out_field_string (uiout, "reason", | |
8013 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
8014 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8015 | } | |
8016 | ui_out_field_int (uiout, "bkptno", b->number); | |
8017 | ui_out_text (uiout, " (forked process "); | |
8018 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8019 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8020 | return PRINT_SRC_AND_LOC; |
8021 | } | |
8022 | ||
4a64f543 MS |
8023 | /* Implement the "print_one" breakpoint_ops method for fork |
8024 | catchpoints. */ | |
ce78b96d JB |
8025 | |
8026 | static void | |
a6d9a66e | 8027 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8028 | { |
e29a4733 | 8029 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8030 | struct value_print_options opts; |
79a45e25 | 8031 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8032 | |
8033 | get_user_print_options (&opts); | |
8034 | ||
4a64f543 MS |
8035 | /* Field 4, the address, is omitted (which makes the columns not |
8036 | line up too nicely with the headers, but the effect is relatively | |
8037 | readable). */ | |
79a45b7d | 8038 | if (opts.addressprint) |
ce78b96d JB |
8039 | ui_out_field_skip (uiout, "addr"); |
8040 | annotate_field (5); | |
8041 | ui_out_text (uiout, "fork"); | |
e29a4733 | 8042 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8043 | { |
8044 | ui_out_text (uiout, ", process "); | |
8045 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8046 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8047 | ui_out_spaces (uiout, 1); |
8048 | } | |
8ac3646f TT |
8049 | |
8050 | if (ui_out_is_mi_like_p (uiout)) | |
8051 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
8052 | } |
8053 | ||
8054 | /* Implement the "print_mention" breakpoint_ops method for fork | |
8055 | catchpoints. */ | |
8056 | ||
8057 | static void | |
8058 | print_mention_catch_fork (struct breakpoint *b) | |
8059 | { | |
8060 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
8061 | } | |
8062 | ||
6149aea9 PA |
8063 | /* Implement the "print_recreate" breakpoint_ops method for fork |
8064 | catchpoints. */ | |
8065 | ||
8066 | static void | |
8067 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
8068 | { | |
8069 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 8070 | print_recreate_thread (b, fp); |
6149aea9 PA |
8071 | } |
8072 | ||
ce78b96d JB |
8073 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
8074 | ||
2060206e | 8075 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 8076 | |
4a64f543 MS |
8077 | /* Implement the "insert" breakpoint_ops method for vfork |
8078 | catchpoints. */ | |
ce78b96d | 8079 | |
77b06cd7 TJB |
8080 | static int |
8081 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 8082 | { |
dfd4cc63 | 8083 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8084 | } |
8085 | ||
4a64f543 MS |
8086 | /* Implement the "remove" breakpoint_ops method for vfork |
8087 | catchpoints. */ | |
ce78b96d JB |
8088 | |
8089 | static int | |
77b06cd7 | 8090 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d | 8091 | { |
dfd4cc63 | 8092 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8093 | } |
8094 | ||
8095 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
8096 | catchpoints. */ | |
8097 | ||
8098 | static int | |
f1310107 | 8099 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
8100 | struct address_space *aspace, CORE_ADDR bp_addr, |
8101 | const struct target_waitstatus *ws) | |
ce78b96d | 8102 | { |
e29a4733 PA |
8103 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8104 | ||
f90263c1 TT |
8105 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
8106 | return 0; | |
8107 | ||
8108 | c->forked_inferior_pid = ws->value.related_pid; | |
8109 | return 1; | |
ce78b96d JB |
8110 | } |
8111 | ||
4a64f543 MS |
8112 | /* Implement the "print_it" breakpoint_ops method for vfork |
8113 | catchpoints. */ | |
ce78b96d JB |
8114 | |
8115 | static enum print_stop_action | |
348d480f | 8116 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 8117 | { |
36dfb11c | 8118 | struct ui_out *uiout = current_uiout; |
348d480f | 8119 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
8120 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
8121 | ||
ce78b96d | 8122 | annotate_catchpoint (b->number); |
36dfb11c TT |
8123 | if (b->disposition == disp_del) |
8124 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8125 | else | |
8126 | ui_out_text (uiout, "\nCatchpoint "); | |
8127 | if (ui_out_is_mi_like_p (uiout)) | |
8128 | { | |
8129 | ui_out_field_string (uiout, "reason", | |
8130 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
8131 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8132 | } | |
8133 | ui_out_field_int (uiout, "bkptno", b->number); | |
8134 | ui_out_text (uiout, " (vforked process "); | |
8135 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8136 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8137 | return PRINT_SRC_AND_LOC; |
8138 | } | |
8139 | ||
4a64f543 MS |
8140 | /* Implement the "print_one" breakpoint_ops method for vfork |
8141 | catchpoints. */ | |
ce78b96d JB |
8142 | |
8143 | static void | |
a6d9a66e | 8144 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8145 | { |
e29a4733 | 8146 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8147 | struct value_print_options opts; |
79a45e25 | 8148 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8149 | |
8150 | get_user_print_options (&opts); | |
4a64f543 MS |
8151 | /* Field 4, the address, is omitted (which makes the columns not |
8152 | line up too nicely with the headers, but the effect is relatively | |
8153 | readable). */ | |
79a45b7d | 8154 | if (opts.addressprint) |
ce78b96d JB |
8155 | ui_out_field_skip (uiout, "addr"); |
8156 | annotate_field (5); | |
8157 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 8158 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8159 | { |
8160 | ui_out_text (uiout, ", process "); | |
8161 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8162 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8163 | ui_out_spaces (uiout, 1); |
8164 | } | |
8ac3646f TT |
8165 | |
8166 | if (ui_out_is_mi_like_p (uiout)) | |
8167 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
8168 | } |
8169 | ||
8170 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8171 | catchpoints. */ | |
8172 | ||
8173 | static void | |
8174 | print_mention_catch_vfork (struct breakpoint *b) | |
8175 | { | |
8176 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8177 | } | |
8178 | ||
6149aea9 PA |
8179 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8180 | catchpoints. */ | |
8181 | ||
8182 | static void | |
8183 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8184 | { | |
8185 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8186 | print_recreate_thread (b, fp); |
6149aea9 PA |
8187 | } |
8188 | ||
ce78b96d JB |
8189 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8190 | ||
2060206e | 8191 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8192 | |
edcc5120 TT |
8193 | /* An instance of this type is used to represent an solib catchpoint. |
8194 | It includes a "struct breakpoint" as a kind of base class; users | |
8195 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8196 | really of this type iff its ops pointer points to | |
8197 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
8198 | ||
8199 | struct solib_catchpoint | |
8200 | { | |
8201 | /* The base class. */ | |
8202 | struct breakpoint base; | |
8203 | ||
8204 | /* True for "catch load", false for "catch unload". */ | |
8205 | unsigned char is_load; | |
8206 | ||
8207 | /* Regular expression to match, if any. COMPILED is only valid when | |
8208 | REGEX is non-NULL. */ | |
8209 | char *regex; | |
8210 | regex_t compiled; | |
8211 | }; | |
8212 | ||
8213 | static void | |
8214 | dtor_catch_solib (struct breakpoint *b) | |
8215 | { | |
8216 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8217 | ||
8218 | if (self->regex) | |
8219 | regfree (&self->compiled); | |
8220 | xfree (self->regex); | |
8221 | ||
8222 | base_breakpoint_ops.dtor (b); | |
8223 | } | |
8224 | ||
8225 | static int | |
8226 | insert_catch_solib (struct bp_location *ignore) | |
8227 | { | |
8228 | return 0; | |
8229 | } | |
8230 | ||
8231 | static int | |
8232 | remove_catch_solib (struct bp_location *ignore) | |
8233 | { | |
8234 | return 0; | |
8235 | } | |
8236 | ||
8237 | static int | |
8238 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8239 | struct address_space *aspace, | |
8240 | CORE_ADDR bp_addr, | |
8241 | const struct target_waitstatus *ws) | |
8242 | { | |
8243 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8244 | struct breakpoint *other; | |
8245 | ||
8246 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8247 | return 1; | |
8248 | ||
8249 | ALL_BREAKPOINTS (other) | |
8250 | { | |
8251 | struct bp_location *other_bl; | |
8252 | ||
8253 | if (other == bl->owner) | |
8254 | continue; | |
8255 | ||
8256 | if (other->type != bp_shlib_event) | |
8257 | continue; | |
8258 | ||
8259 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
8260 | continue; | |
8261 | ||
8262 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8263 | { | |
8264 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8265 | return 1; | |
8266 | } | |
8267 | } | |
8268 | ||
8269 | return 0; | |
8270 | } | |
8271 | ||
8272 | static void | |
8273 | check_status_catch_solib (struct bpstats *bs) | |
8274 | { | |
8275 | struct solib_catchpoint *self | |
8276 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8277 | int ix; | |
8278 | ||
8279 | if (self->is_load) | |
8280 | { | |
8281 | struct so_list *iter; | |
8282 | ||
8283 | for (ix = 0; | |
8284 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8285 | ix, iter); | |
8286 | ++ix) | |
8287 | { | |
8288 | if (!self->regex | |
8289 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
8290 | return; | |
8291 | } | |
8292 | } | |
8293 | else | |
8294 | { | |
8295 | char *iter; | |
8296 | ||
8297 | for (ix = 0; | |
8298 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8299 | ix, iter); | |
8300 | ++ix) | |
8301 | { | |
8302 | if (!self->regex | |
8303 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
8304 | return; | |
8305 | } | |
8306 | } | |
8307 | ||
8308 | bs->stop = 0; | |
8309 | bs->print_it = print_it_noop; | |
8310 | } | |
8311 | ||
8312 | static enum print_stop_action | |
8313 | print_it_catch_solib (bpstat bs) | |
8314 | { | |
8315 | struct breakpoint *b = bs->breakpoint_at; | |
8316 | struct ui_out *uiout = current_uiout; | |
8317 | ||
8318 | annotate_catchpoint (b->number); | |
8319 | if (b->disposition == disp_del) | |
8320 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8321 | else | |
8322 | ui_out_text (uiout, "\nCatchpoint "); | |
8323 | ui_out_field_int (uiout, "bkptno", b->number); | |
8324 | ui_out_text (uiout, "\n"); | |
8325 | if (ui_out_is_mi_like_p (uiout)) | |
8326 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8327 | print_solib_event (1); | |
8328 | return PRINT_SRC_AND_LOC; | |
8329 | } | |
8330 | ||
8331 | static void | |
8332 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8333 | { | |
8334 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8335 | struct value_print_options opts; | |
8336 | struct ui_out *uiout = current_uiout; | |
8337 | char *msg; | |
8338 | ||
8339 | get_user_print_options (&opts); | |
8340 | /* Field 4, the address, is omitted (which makes the columns not | |
8341 | line up too nicely with the headers, but the effect is relatively | |
8342 | readable). */ | |
8343 | if (opts.addressprint) | |
8344 | { | |
8345 | annotate_field (4); | |
8346 | ui_out_field_skip (uiout, "addr"); | |
8347 | } | |
8348 | ||
8349 | annotate_field (5); | |
8350 | if (self->is_load) | |
8351 | { | |
8352 | if (self->regex) | |
8353 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8354 | else | |
8355 | msg = xstrdup (_("load of library")); | |
8356 | } | |
8357 | else | |
8358 | { | |
8359 | if (self->regex) | |
8360 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8361 | else | |
8362 | msg = xstrdup (_("unload of library")); | |
8363 | } | |
8364 | ui_out_field_string (uiout, "what", msg); | |
8365 | xfree (msg); | |
8ac3646f TT |
8366 | |
8367 | if (ui_out_is_mi_like_p (uiout)) | |
8368 | ui_out_field_string (uiout, "catch-type", | |
8369 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8370 | } |
8371 | ||
8372 | static void | |
8373 | print_mention_catch_solib (struct breakpoint *b) | |
8374 | { | |
8375 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8376 | ||
8377 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8378 | self->is_load ? "load" : "unload"); | |
8379 | } | |
8380 | ||
8381 | static void | |
8382 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8383 | { | |
8384 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8385 | ||
8386 | fprintf_unfiltered (fp, "%s %s", | |
8387 | b->disposition == disp_del ? "tcatch" : "catch", | |
8388 | self->is_load ? "load" : "unload"); | |
8389 | if (self->regex) | |
8390 | fprintf_unfiltered (fp, " %s", self->regex); | |
8391 | fprintf_unfiltered (fp, "\n"); | |
8392 | } | |
8393 | ||
8394 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8395 | ||
91985142 MG |
8396 | /* Shared helper function (MI and CLI) for creating and installing |
8397 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8398 | the events to be caught are load events, otherwise they are | |
8399 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8400 | temporary one. If ENABLED is non-zero the catchpoint is | |
8401 | created in an enabled state. */ | |
edcc5120 | 8402 | |
91985142 MG |
8403 | void |
8404 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
8405 | { |
8406 | struct solib_catchpoint *c; | |
8407 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
8408 | struct cleanup *cleanup; |
8409 | ||
edcc5120 TT |
8410 | if (!arg) |
8411 | arg = ""; | |
8412 | arg = skip_spaces (arg); | |
8413 | ||
8414 | c = XCNEW (struct solib_catchpoint); | |
8415 | cleanup = make_cleanup (xfree, c); | |
8416 | ||
8417 | if (*arg != '\0') | |
8418 | { | |
8419 | int errcode; | |
8420 | ||
8421 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
8422 | if (errcode != 0) | |
8423 | { | |
8424 | char *err = get_regcomp_error (errcode, &c->compiled); | |
8425 | ||
8426 | make_cleanup (xfree, err); | |
8427 | error (_("Invalid regexp (%s): %s"), err, arg); | |
8428 | } | |
8429 | c->regex = xstrdup (arg); | |
8430 | } | |
8431 | ||
8432 | c->is_load = is_load; | |
91985142 | 8433 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
8434 | &catch_solib_breakpoint_ops); |
8435 | ||
91985142 MG |
8436 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
8437 | ||
edcc5120 TT |
8438 | discard_cleanups (cleanup); |
8439 | install_breakpoint (0, &c->base, 1); | |
8440 | } | |
8441 | ||
91985142 MG |
8442 | /* A helper function that does all the work for "catch load" and |
8443 | "catch unload". */ | |
8444 | ||
8445 | static void | |
8446 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8447 | struct cmd_list_element *command) | |
8448 | { | |
8449 | int tempflag; | |
8450 | const int enabled = 1; | |
8451 | ||
8452 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8453 | ||
8454 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8455 | } | |
8456 | ||
edcc5120 TT |
8457 | static void |
8458 | catch_load_command_1 (char *arg, int from_tty, | |
8459 | struct cmd_list_element *command) | |
8460 | { | |
8461 | catch_load_or_unload (arg, from_tty, 1, command); | |
8462 | } | |
8463 | ||
8464 | static void | |
8465 | catch_unload_command_1 (char *arg, int from_tty, | |
8466 | struct cmd_list_element *command) | |
8467 | { | |
8468 | catch_load_or_unload (arg, from_tty, 0, command); | |
8469 | } | |
8470 | ||
346774a9 PA |
8471 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8472 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8473 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8474 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8475 | |
ab04a2af | 8476 | void |
346774a9 PA |
8477 | init_catchpoint (struct breakpoint *b, |
8478 | struct gdbarch *gdbarch, int tempflag, | |
8479 | char *cond_string, | |
c0a91b2b | 8480 | const struct breakpoint_ops *ops) |
c906108c | 8481 | { |
c5aa993b | 8482 | struct symtab_and_line sal; |
346774a9 | 8483 | |
fe39c653 | 8484 | init_sal (&sal); |
6c95b8df | 8485 | sal.pspace = current_program_space; |
c5aa993b | 8486 | |
28010a5d | 8487 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8488 | |
1b36a34b | 8489 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8490 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8491 | } |
8492 | ||
28010a5d | 8493 | void |
3ea46bff | 8494 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8495 | { |
8496 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8497 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8498 | if (is_tracepoint (b)) |
8499 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8500 | if (!internal) |
8501 | mention (b); | |
c56053d2 | 8502 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8503 | |
8504 | if (update_gll) | |
44702360 | 8505 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8506 | } |
8507 | ||
9b70b993 | 8508 | static void |
a6d9a66e UW |
8509 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8510 | int tempflag, char *cond_string, | |
c0a91b2b | 8511 | const struct breakpoint_ops *ops) |
c906108c | 8512 | { |
e29a4733 | 8513 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8514 | |
e29a4733 PA |
8515 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8516 | ||
8517 | c->forked_inferior_pid = null_ptid; | |
8518 | ||
3ea46bff | 8519 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8520 | } |
8521 | ||
fe798b75 JB |
8522 | /* Exec catchpoints. */ |
8523 | ||
b4d90040 PA |
8524 | /* An instance of this type is used to represent an exec catchpoint. |
8525 | It includes a "struct breakpoint" as a kind of base class; users | |
8526 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8527 | really of this type iff its ops pointer points to | |
8528 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8529 | ||
8530 | struct exec_catchpoint | |
8531 | { | |
8532 | /* The base class. */ | |
8533 | struct breakpoint base; | |
8534 | ||
8535 | /* Filename of a program whose exec triggered this catchpoint. | |
8536 | This field is only valid immediately after this catchpoint has | |
8537 | triggered. */ | |
8538 | char *exec_pathname; | |
8539 | }; | |
8540 | ||
8541 | /* Implement the "dtor" breakpoint_ops method for exec | |
8542 | catchpoints. */ | |
8543 | ||
8544 | static void | |
8545 | dtor_catch_exec (struct breakpoint *b) | |
8546 | { | |
8547 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8548 | ||
8549 | xfree (c->exec_pathname); | |
348d480f | 8550 | |
2060206e | 8551 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8552 | } |
8553 | ||
77b06cd7 TJB |
8554 | static int |
8555 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8556 | { |
dfd4cc63 | 8557 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8558 | } |
c906108c | 8559 | |
fe798b75 | 8560 | static int |
77b06cd7 | 8561 | remove_catch_exec (struct bp_location *bl) |
fe798b75 | 8562 | { |
dfd4cc63 | 8563 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8564 | } |
c906108c | 8565 | |
fe798b75 | 8566 | static int |
f1310107 | 8567 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8568 | struct address_space *aspace, CORE_ADDR bp_addr, |
8569 | const struct target_waitstatus *ws) | |
fe798b75 | 8570 | { |
b4d90040 PA |
8571 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8572 | ||
f90263c1 TT |
8573 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8574 | return 0; | |
8575 | ||
8576 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8577 | return 1; | |
fe798b75 | 8578 | } |
c906108c | 8579 | |
fe798b75 | 8580 | static enum print_stop_action |
348d480f | 8581 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8582 | { |
36dfb11c | 8583 | struct ui_out *uiout = current_uiout; |
348d480f | 8584 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8585 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8586 | ||
fe798b75 | 8587 | annotate_catchpoint (b->number); |
36dfb11c TT |
8588 | if (b->disposition == disp_del) |
8589 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8590 | else | |
8591 | ui_out_text (uiout, "\nCatchpoint "); | |
8592 | if (ui_out_is_mi_like_p (uiout)) | |
8593 | { | |
8594 | ui_out_field_string (uiout, "reason", | |
8595 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8596 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8597 | } | |
8598 | ui_out_field_int (uiout, "bkptno", b->number); | |
8599 | ui_out_text (uiout, " (exec'd "); | |
8600 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8601 | ui_out_text (uiout, "), "); | |
8602 | ||
fe798b75 | 8603 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8604 | } |
8605 | ||
fe798b75 | 8606 | static void |
a6d9a66e | 8607 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8608 | { |
b4d90040 | 8609 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8610 | struct value_print_options opts; |
79a45e25 | 8611 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8612 | |
8613 | get_user_print_options (&opts); | |
8614 | ||
8615 | /* Field 4, the address, is omitted (which makes the columns | |
8616 | not line up too nicely with the headers, but the effect | |
8617 | is relatively readable). */ | |
8618 | if (opts.addressprint) | |
8619 | ui_out_field_skip (uiout, "addr"); | |
8620 | annotate_field (5); | |
8621 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8622 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8623 | { |
8624 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8625 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8626 | ui_out_text (uiout, "\" "); |
8627 | } | |
8ac3646f TT |
8628 | |
8629 | if (ui_out_is_mi_like_p (uiout)) | |
8630 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
8631 | } |
8632 | ||
8633 | static void | |
8634 | print_mention_catch_exec (struct breakpoint *b) | |
8635 | { | |
8636 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8637 | } | |
8638 | ||
6149aea9 PA |
8639 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8640 | catchpoints. */ | |
8641 | ||
8642 | static void | |
8643 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8644 | { | |
8645 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8646 | print_recreate_thread (b, fp); |
6149aea9 PA |
8647 | } |
8648 | ||
2060206e | 8649 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8650 | |
c906108c | 8651 | static int |
fba45db2 | 8652 | hw_breakpoint_used_count (void) |
c906108c | 8653 | { |
c906108c | 8654 | int i = 0; |
f1310107 TJB |
8655 | struct breakpoint *b; |
8656 | struct bp_location *bl; | |
c906108c SS |
8657 | |
8658 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8659 | { |
d6b74ac4 | 8660 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8661 | for (bl = b->loc; bl; bl = bl->next) |
8662 | { | |
8663 | /* Special types of hardware breakpoints may use more than | |
8664 | one register. */ | |
348d480f | 8665 | i += b->ops->resources_needed (bl); |
f1310107 | 8666 | } |
c5aa993b | 8667 | } |
c906108c SS |
8668 | |
8669 | return i; | |
8670 | } | |
8671 | ||
a1398e0c PA |
8672 | /* Returns the resources B would use if it were a hardware |
8673 | watchpoint. */ | |
8674 | ||
c906108c | 8675 | static int |
a1398e0c | 8676 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8677 | { |
c906108c | 8678 | int i = 0; |
e09342b5 | 8679 | struct bp_location *bl; |
c906108c | 8680 | |
a1398e0c PA |
8681 | if (!breakpoint_enabled (b)) |
8682 | return 0; | |
8683 | ||
8684 | for (bl = b->loc; bl; bl = bl->next) | |
8685 | { | |
8686 | /* Special types of hardware watchpoints may use more than | |
8687 | one register. */ | |
8688 | i += b->ops->resources_needed (bl); | |
8689 | } | |
8690 | ||
8691 | return i; | |
8692 | } | |
8693 | ||
8694 | /* Returns the sum the used resources of all hardware watchpoints of | |
8695 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8696 | the sum of the used resources of all hardware watchpoints of other | |
8697 | types _not_ TYPE. */ | |
8698 | ||
8699 | static int | |
8700 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8701 | enum bptype type, int *other_type_used) | |
8702 | { | |
8703 | int i = 0; | |
8704 | struct breakpoint *b; | |
8705 | ||
c906108c SS |
8706 | *other_type_used = 0; |
8707 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8708 | { |
a1398e0c PA |
8709 | if (b == except) |
8710 | continue; | |
e09342b5 TJB |
8711 | if (!breakpoint_enabled (b)) |
8712 | continue; | |
8713 | ||
a1398e0c PA |
8714 | if (b->type == type) |
8715 | i += hw_watchpoint_use_count (b); | |
8716 | else if (is_hardware_watchpoint (b)) | |
8717 | *other_type_used = 1; | |
e09342b5 TJB |
8718 | } |
8719 | ||
c906108c SS |
8720 | return i; |
8721 | } | |
8722 | ||
c906108c | 8723 | void |
fba45db2 | 8724 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8725 | { |
c5aa993b | 8726 | struct breakpoint *b; |
c906108c SS |
8727 | |
8728 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8729 | { |
cc60f2e3 | 8730 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8731 | { |
b5de0fa7 | 8732 | b->enable_state = bp_call_disabled; |
44702360 | 8733 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8734 | } |
8735 | } | |
c906108c SS |
8736 | } |
8737 | ||
8738 | void | |
fba45db2 | 8739 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8740 | { |
c5aa993b | 8741 | struct breakpoint *b; |
c906108c SS |
8742 | |
8743 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8744 | { |
cc60f2e3 | 8745 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8746 | { |
b5de0fa7 | 8747 | b->enable_state = bp_enabled; |
44702360 | 8748 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8749 | } |
8750 | } | |
c906108c SS |
8751 | } |
8752 | ||
8bea4e01 UW |
8753 | void |
8754 | disable_breakpoints_before_startup (void) | |
8755 | { | |
6c95b8df | 8756 | current_program_space->executing_startup = 1; |
44702360 | 8757 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8758 | } |
8759 | ||
8760 | void | |
8761 | enable_breakpoints_after_startup (void) | |
8762 | { | |
6c95b8df | 8763 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8764 | breakpoint_re_set (); |
8bea4e01 UW |
8765 | } |
8766 | ||
7c16b83e PA |
8767 | /* Create a new single-step breakpoint for thread THREAD, with no |
8768 | locations. */ | |
c906108c | 8769 | |
7c16b83e PA |
8770 | static struct breakpoint * |
8771 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8772 | { | |
8773 | struct breakpoint *b = XNEW (struct breakpoint); | |
8774 | ||
8775 | init_raw_breakpoint_without_location (b, gdbarch, bp_single_step, | |
8776 | &momentary_breakpoint_ops); | |
8777 | ||
8778 | b->disposition = disp_donttouch; | |
8779 | b->frame_id = null_frame_id; | |
8780 | ||
8781 | b->thread = thread; | |
8782 | gdb_assert (b->thread != 0); | |
8783 | ||
8784 | add_to_breakpoint_chain (b); | |
8785 | ||
8786 | return b; | |
8787 | } | |
8788 | ||
8789 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8790 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8791 | frame. */ | |
c906108c SS |
8792 | |
8793 | struct breakpoint * | |
a6d9a66e UW |
8794 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8795 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8796 | { |
52f0bd74 | 8797 | struct breakpoint *b; |
edb3359d | 8798 | |
193facb3 JK |
8799 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8800 | tail-called one. */ | |
8801 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8802 | |
06edf0c0 | 8803 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8804 | b->enable_state = bp_enabled; |
8805 | b->disposition = disp_donttouch; | |
818dd999 | 8806 | b->frame_id = frame_id; |
c906108c | 8807 | |
4a64f543 MS |
8808 | /* If we're debugging a multi-threaded program, then we want |
8809 | momentary breakpoints to be active in only a single thread of | |
8810 | control. */ | |
39f77062 KB |
8811 | if (in_thread_list (inferior_ptid)) |
8812 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8813 | |
44702360 | 8814 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8815 | |
c906108c SS |
8816 | return b; |
8817 | } | |
611c83ae | 8818 | |
06edf0c0 | 8819 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8820 | The new breakpoint will have type TYPE, use OPS as its |
8821 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8822 | |
06edf0c0 PA |
8823 | static struct breakpoint * |
8824 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8825 | enum bptype type, | |
a1aa2221 LM |
8826 | const struct breakpoint_ops *ops, |
8827 | int loc_enabled) | |
e58b0e63 PA |
8828 | { |
8829 | struct breakpoint *copy; | |
8830 | ||
06edf0c0 | 8831 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8832 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8833 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8834 | |
a6d9a66e | 8835 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8836 | copy->loc->requested_address = orig->loc->requested_address; |
8837 | copy->loc->address = orig->loc->address; | |
8838 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8839 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8840 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8841 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8842 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8843 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8844 | copy->frame_id = orig->frame_id; |
8845 | copy->thread = orig->thread; | |
6c95b8df | 8846 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8847 | |
8848 | copy->enable_state = bp_enabled; | |
8849 | copy->disposition = disp_donttouch; | |
8850 | copy->number = internal_breakpoint_number--; | |
8851 | ||
44702360 | 8852 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8853 | return copy; |
8854 | } | |
8855 | ||
06edf0c0 PA |
8856 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8857 | ORIG is NULL. */ | |
8858 | ||
8859 | struct breakpoint * | |
8860 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8861 | { | |
8862 | /* If there's nothing to clone, then return nothing. */ | |
8863 | if (orig == NULL) | |
8864 | return NULL; | |
8865 | ||
a1aa2221 | 8866 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8867 | } |
8868 | ||
611c83ae | 8869 | struct breakpoint * |
a6d9a66e UW |
8870 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8871 | enum bptype type) | |
611c83ae PA |
8872 | { |
8873 | struct symtab_and_line sal; | |
8874 | ||
8875 | sal = find_pc_line (pc, 0); | |
8876 | sal.pc = pc; | |
8877 | sal.section = find_pc_overlay (pc); | |
8878 | sal.explicit_pc = 1; | |
8879 | ||
a6d9a66e | 8880 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8881 | } |
c906108c | 8882 | \f |
c5aa993b | 8883 | |
c906108c SS |
8884 | /* Tell the user we have just set a breakpoint B. */ |
8885 | ||
8886 | static void | |
fba45db2 | 8887 | mention (struct breakpoint *b) |
c906108c | 8888 | { |
348d480f | 8889 | b->ops->print_mention (b); |
79a45e25 | 8890 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8891 | return; |
c906108c SS |
8892 | printf_filtered ("\n"); |
8893 | } | |
c906108c | 8894 | \f |
c5aa993b | 8895 | |
1a853c52 PA |
8896 | static int bp_loc_is_permanent (struct bp_location *loc); |
8897 | ||
0d381245 | 8898 | static struct bp_location * |
39d61571 | 8899 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8900 | const struct symtab_and_line *sal) |
8901 | { | |
8902 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8903 | CORE_ADDR adjusted_address; |
8904 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8905 | ||
8906 | if (loc_gdbarch == NULL) | |
8907 | loc_gdbarch = b->gdbarch; | |
8908 | ||
8909 | /* Adjust the breakpoint's address prior to allocating a location. | |
8910 | Once we call allocate_bp_location(), that mostly uninitialized | |
8911 | location will be placed on the location chain. Adjustment of the | |
8912 | breakpoint may cause target_read_memory() to be called and we do | |
8913 | not want its scan of the location chain to find a breakpoint and | |
8914 | location that's only been partially initialized. */ | |
8915 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8916 | sal->pc, b->type); | |
0d381245 | 8917 | |
d30113d4 | 8918 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8919 | loc = allocate_bp_location (b); |
d30113d4 JK |
8920 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8921 | tmp = &((*tmp)->next)) | |
0d381245 | 8922 | ; |
d30113d4 | 8923 | loc->next = *tmp; |
0d381245 | 8924 | *tmp = loc; |
3742cc8b | 8925 | |
0d381245 | 8926 | loc->requested_address = sal->pc; |
3742cc8b | 8927 | loc->address = adjusted_address; |
6c95b8df | 8928 | loc->pspace = sal->pspace; |
729662a5 TT |
8929 | loc->probe.probe = sal->probe; |
8930 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8931 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8932 | loc->section = sal->section; |
3742cc8b | 8933 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8934 | loc->line_number = sal->line; |
2f202fde | 8935 | loc->symtab = sal->symtab; |
f8eba3c6 | 8936 | |
0e30163f JK |
8937 | set_breakpoint_location_function (loc, |
8938 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8939 | |
6ae88661 LM |
8940 | /* While by definition, permanent breakpoints are already present in the |
8941 | code, we don't mark the location as inserted. Normally one would expect | |
8942 | that GDB could rely on that breakpoint instruction to stop the program, | |
8943 | thus removing the need to insert its own breakpoint, except that executing | |
8944 | the breakpoint instruction can kill the target instead of reporting a | |
8945 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8946 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8947 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8948 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8949 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8950 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8951 | it manually increments the PC, thus avoiding executing the breakpoint | |
8952 | instruction.) */ | |
1a853c52 | 8953 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8954 | loc->permanent = 1; |
1a853c52 | 8955 | |
0d381245 VP |
8956 | return loc; |
8957 | } | |
514f746b AR |
8958 | \f |
8959 | ||
1cf4d951 | 8960 | /* See breakpoint.h. */ |
514f746b | 8961 | |
1cf4d951 PA |
8962 | int |
8963 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8964 | { |
8965 | int len; | |
8966 | CORE_ADDR addr; | |
1afeeb75 | 8967 | const gdb_byte *bpoint; |
514f746b | 8968 | gdb_byte *target_mem; |
939c61fa JK |
8969 | struct cleanup *cleanup; |
8970 | int retval = 0; | |
514f746b | 8971 | |
1cf4d951 PA |
8972 | addr = address; |
8973 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8974 | ||
8975 | /* Software breakpoints unsupported? */ | |
8976 | if (bpoint == NULL) | |
8977 | return 0; | |
8978 | ||
8979 | target_mem = alloca (len); | |
8980 | ||
8981 | /* Enable the automatic memory restoration from breakpoints while | |
8982 | we read the memory. Otherwise we could say about our temporary | |
8983 | breakpoints they are permanent. */ | |
8984 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
8985 | ||
8986 | if (target_read_memory (address, target_mem, len) == 0 | |
8987 | && memcmp (target_mem, bpoint, len) == 0) | |
8988 | retval = 1; | |
8989 | ||
8990 | do_cleanups (cleanup); | |
8991 | ||
8992 | return retval; | |
8993 | } | |
8994 | ||
8995 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8996 | return 0 otherwise. */ | |
8997 | ||
8998 | static int | |
8999 | bp_loc_is_permanent (struct bp_location *loc) | |
9000 | { | |
9001 | struct cleanup *cleanup; | |
9002 | int retval; | |
9003 | ||
514f746b AR |
9004 | gdb_assert (loc != NULL); |
9005 | ||
6c95b8df | 9006 | cleanup = save_current_space_and_thread (); |
6c95b8df | 9007 | switch_to_program_space_and_thread (loc->pspace); |
939c61fa | 9008 | |
1cf4d951 | 9009 | retval = program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b | 9010 | |
939c61fa JK |
9011 | do_cleanups (cleanup); |
9012 | ||
9013 | return retval; | |
514f746b AR |
9014 | } |
9015 | ||
e7e0cddf SS |
9016 | /* Build a command list for the dprintf corresponding to the current |
9017 | settings of the dprintf style options. */ | |
9018 | ||
9019 | static void | |
9020 | update_dprintf_command_list (struct breakpoint *b) | |
9021 | { | |
9022 | char *dprintf_args = b->extra_string; | |
9023 | char *printf_line = NULL; | |
9024 | ||
9025 | if (!dprintf_args) | |
9026 | return; | |
9027 | ||
9028 | dprintf_args = skip_spaces (dprintf_args); | |
9029 | ||
9030 | /* Allow a comma, as it may have terminated a location, but don't | |
9031 | insist on it. */ | |
9032 | if (*dprintf_args == ',') | |
9033 | ++dprintf_args; | |
9034 | dprintf_args = skip_spaces (dprintf_args); | |
9035 | ||
9036 | if (*dprintf_args != '"') | |
9037 | error (_("Bad format string, missing '\"'.")); | |
9038 | ||
d3ce09f5 | 9039 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 9040 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 9041 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
9042 | { |
9043 | if (!dprintf_function) | |
9044 | error (_("No function supplied for dprintf call")); | |
9045 | ||
9046 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
9047 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
9048 | dprintf_function, | |
9049 | dprintf_channel, | |
9050 | dprintf_args); | |
9051 | else | |
9052 | printf_line = xstrprintf ("call (void) %s (%s)", | |
9053 | dprintf_function, | |
9054 | dprintf_args); | |
9055 | } | |
d3ce09f5 SS |
9056 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
9057 | { | |
9058 | if (target_can_run_breakpoint_commands ()) | |
9059 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
9060 | else | |
9061 | { | |
9062 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
9063 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
9064 | } | |
9065 | } | |
e7e0cddf SS |
9066 | else |
9067 | internal_error (__FILE__, __LINE__, | |
9068 | _("Invalid dprintf style.")); | |
9069 | ||
f28045c2 | 9070 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 9071 | /* Manufacture a printf sequence. */ |
f28045c2 | 9072 | { |
9d6e6e84 HZ |
9073 | struct command_line *printf_cmd_line |
9074 | = xmalloc (sizeof (struct command_line)); | |
e7e0cddf | 9075 | |
f28045c2 YQ |
9076 | printf_cmd_line->control_type = simple_control; |
9077 | printf_cmd_line->body_count = 0; | |
9078 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 9079 | printf_cmd_line->next = NULL; |
f28045c2 | 9080 | printf_cmd_line->line = printf_line; |
e7e0cddf | 9081 | |
f28045c2 YQ |
9082 | breakpoint_set_commands (b, printf_cmd_line); |
9083 | } | |
e7e0cddf SS |
9084 | } |
9085 | ||
9086 | /* Update all dprintf commands, making their command lists reflect | |
9087 | current style settings. */ | |
9088 | ||
9089 | static void | |
9090 | update_dprintf_commands (char *args, int from_tty, | |
9091 | struct cmd_list_element *c) | |
9092 | { | |
9093 | struct breakpoint *b; | |
9094 | ||
9095 | ALL_BREAKPOINTS (b) | |
9096 | { | |
9097 | if (b->type == bp_dprintf) | |
9098 | update_dprintf_command_list (b); | |
9099 | } | |
9100 | } | |
c3f6f71d | 9101 | |
f00aae0f KS |
9102 | /* Create a breakpoint with SAL as location. Use LOCATION |
9103 | as a description of the location, and COND_STRING | |
db107f19 | 9104 | as condition expression. */ |
018d34a4 VP |
9105 | |
9106 | static void | |
d9b3f62e | 9107 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
f00aae0f KS |
9108 | struct symtabs_and_lines sals, |
9109 | struct event_location *location, | |
f8eba3c6 | 9110 | char *filter, char *cond_string, |
e7e0cddf | 9111 | char *extra_string, |
d9b3f62e PA |
9112 | enum bptype type, enum bpdisp disposition, |
9113 | int thread, int task, int ignore_count, | |
c0a91b2b | 9114 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9115 | int enabled, int internal, unsigned flags, |
9116 | int display_canonical) | |
018d34a4 | 9117 | { |
0d381245 | 9118 | int i; |
018d34a4 VP |
9119 | |
9120 | if (type == bp_hardware_breakpoint) | |
9121 | { | |
fbbd034e AS |
9122 | int target_resources_ok; |
9123 | ||
9124 | i = hw_breakpoint_used_count (); | |
9125 | target_resources_ok = | |
9126 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9127 | i + 1, 0); |
9128 | if (target_resources_ok == 0) | |
9129 | error (_("No hardware breakpoint support in the target.")); | |
9130 | else if (target_resources_ok < 0) | |
9131 | error (_("Hardware breakpoints used exceeds limit.")); | |
9132 | } | |
9133 | ||
6c95b8df PA |
9134 | gdb_assert (sals.nelts > 0); |
9135 | ||
0d381245 VP |
9136 | for (i = 0; i < sals.nelts; ++i) |
9137 | { | |
9138 | struct symtab_and_line sal = sals.sals[i]; | |
9139 | struct bp_location *loc; | |
9140 | ||
9141 | if (from_tty) | |
5af949e3 UW |
9142 | { |
9143 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9144 | if (!loc_gdbarch) | |
9145 | loc_gdbarch = gdbarch; | |
9146 | ||
9147 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9148 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9149 | } |
0d381245 VP |
9150 | |
9151 | if (i == 0) | |
9152 | { | |
d9b3f62e | 9153 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9154 | b->thread = thread; |
4a306c9a | 9155 | b->task = task; |
855a6e68 | 9156 | |
0d381245 | 9157 | b->cond_string = cond_string; |
e7e0cddf | 9158 | b->extra_string = extra_string; |
0d381245 | 9159 | b->ignore_count = ignore_count; |
41447f92 | 9160 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9161 | b->disposition = disposition; |
6c95b8df | 9162 | |
44f238bb PA |
9163 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9164 | b->loc->inserted = 1; | |
9165 | ||
0fb4aa4b PA |
9166 | if (type == bp_static_tracepoint) |
9167 | { | |
d9b3f62e | 9168 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9169 | struct static_tracepoint_marker marker; |
9170 | ||
983af33b | 9171 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9172 | { |
9173 | /* We already know the marker exists, otherwise, we | |
9174 | wouldn't see a sal for it. */ | |
f00aae0f KS |
9175 | const char *p = &event_location_to_string (b->location)[3]; |
9176 | const char *endp; | |
0fb4aa4b | 9177 | char *marker_str; |
0fb4aa4b | 9178 | |
f00aae0f | 9179 | p = skip_spaces_const (p); |
0fb4aa4b | 9180 | |
f00aae0f | 9181 | endp = skip_to_space_const (p); |
0fb4aa4b PA |
9182 | |
9183 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9184 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9185 | |
3e43a32a MS |
9186 | printf_filtered (_("Probed static tracepoint " |
9187 | "marker \"%s\"\n"), | |
d9b3f62e | 9188 | t->static_trace_marker_id); |
0fb4aa4b PA |
9189 | } |
9190 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9191 | { | |
d9b3f62e | 9192 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9193 | release_static_tracepoint_marker (&marker); |
9194 | ||
3e43a32a MS |
9195 | printf_filtered (_("Probed static tracepoint " |
9196 | "marker \"%s\"\n"), | |
d9b3f62e | 9197 | t->static_trace_marker_id); |
0fb4aa4b PA |
9198 | } |
9199 | else | |
3e43a32a MS |
9200 | warning (_("Couldn't determine the static " |
9201 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9202 | } |
9203 | ||
0d381245 VP |
9204 | loc = b->loc; |
9205 | } | |
9206 | else | |
018d34a4 | 9207 | { |
39d61571 | 9208 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9209 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9210 | loc->inserted = 1; | |
0d381245 VP |
9211 | } |
9212 | ||
9213 | if (b->cond_string) | |
9214 | { | |
bbc13ae3 KS |
9215 | const char *arg = b->cond_string; |
9216 | ||
1bb9788d TT |
9217 | loc->cond = parse_exp_1 (&arg, loc->address, |
9218 | block_for_pc (loc->address), 0); | |
0d381245 | 9219 | if (*arg) |
588ae58c | 9220 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9221 | } |
e7e0cddf SS |
9222 | |
9223 | /* Dynamic printf requires and uses additional arguments on the | |
9224 | command line, otherwise it's an error. */ | |
9225 | if (type == bp_dprintf) | |
9226 | { | |
9227 | if (b->extra_string) | |
9228 | update_dprintf_command_list (b); | |
9229 | else | |
9230 | error (_("Format string required")); | |
9231 | } | |
9232 | else if (b->extra_string) | |
588ae58c | 9233 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9234 | } |
018d34a4 | 9235 | |
56435ebe | 9236 | b->display_canonical = display_canonical; |
f00aae0f KS |
9237 | if (location != NULL) |
9238 | b->location = location; | |
018d34a4 | 9239 | else |
a06efdd6 | 9240 | b->location = new_address_location (b->loc->address); |
f8eba3c6 | 9241 | b->filter = filter; |
d9b3f62e | 9242 | } |
018d34a4 | 9243 | |
d9b3f62e PA |
9244 | static void |
9245 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
f00aae0f KS |
9246 | struct symtabs_and_lines sals, |
9247 | struct event_location *location, | |
f8eba3c6 | 9248 | char *filter, char *cond_string, |
e7e0cddf | 9249 | char *extra_string, |
d9b3f62e PA |
9250 | enum bptype type, enum bpdisp disposition, |
9251 | int thread, int task, int ignore_count, | |
c0a91b2b | 9252 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9253 | int enabled, int internal, unsigned flags, |
9254 | int display_canonical) | |
d9b3f62e PA |
9255 | { |
9256 | struct breakpoint *b; | |
9257 | struct cleanup *old_chain; | |
9258 | ||
9259 | if (is_tracepoint_type (type)) | |
9260 | { | |
9261 | struct tracepoint *t; | |
9262 | ||
9263 | t = XCNEW (struct tracepoint); | |
9264 | b = &t->base; | |
9265 | } | |
9266 | else | |
9267 | b = XNEW (struct breakpoint); | |
9268 | ||
9269 | old_chain = make_cleanup (xfree, b); | |
9270 | ||
9271 | init_breakpoint_sal (b, gdbarch, | |
f00aae0f | 9272 | sals, location, |
e7e0cddf | 9273 | filter, cond_string, extra_string, |
d9b3f62e PA |
9274 | type, disposition, |
9275 | thread, task, ignore_count, | |
9276 | ops, from_tty, | |
44f238bb PA |
9277 | enabled, internal, flags, |
9278 | display_canonical); | |
d9b3f62e PA |
9279 | discard_cleanups (old_chain); |
9280 | ||
3ea46bff | 9281 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9282 | } |
9283 | ||
9284 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9285 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9286 | value. COND_STRING, if not NULL, specified the condition to be | |
9287 | used for all breakpoints. Essentially the only case where | |
9288 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9289 | function. In that case, it's still not possible to specify | |
9290 | separate conditions for different overloaded functions, so | |
9291 | we take just a single condition string. | |
9292 | ||
c3f6f71d | 9293 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9294 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9295 | array contents). If the function fails (error() is called), the |
9296 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9297 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9298 | |
9299 | static void | |
8cdf0e15 | 9300 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9301 | struct linespec_result *canonical, |
e7e0cddf | 9302 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9303 | enum bptype type, enum bpdisp disposition, |
9304 | int thread, int task, int ignore_count, | |
c0a91b2b | 9305 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9306 | int enabled, int internal, unsigned flags) |
c906108c | 9307 | { |
018d34a4 | 9308 | int i; |
f8eba3c6 | 9309 | struct linespec_sals *lsal; |
cc59ec59 | 9310 | |
f8eba3c6 TT |
9311 | if (canonical->pre_expanded) |
9312 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9313 | ||
9314 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9315 | { |
f00aae0f | 9316 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9317 | 'break', without arguments. */ |
f00aae0f KS |
9318 | struct event_location *location |
9319 | = (canonical->location != NULL | |
9320 | ? copy_event_location (canonical->location) : NULL); | |
f8eba3c6 | 9321 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; |
f00aae0f | 9322 | struct cleanup *inner = make_cleanup_delete_event_location (location); |
0d381245 | 9323 | |
f8eba3c6 TT |
9324 | make_cleanup (xfree, filter_string); |
9325 | create_breakpoint_sal (gdbarch, lsal->sals, | |
f00aae0f | 9326 | location, |
f8eba3c6 | 9327 | filter_string, |
e7e0cddf SS |
9328 | cond_string, extra_string, |
9329 | type, disposition, | |
84f4c1fe | 9330 | thread, task, ignore_count, ops, |
44f238bb | 9331 | from_tty, enabled, internal, flags, |
56435ebe | 9332 | canonical->special_display); |
f8eba3c6 | 9333 | discard_cleanups (inner); |
c3f6f71d | 9334 | } |
c3f6f71d | 9335 | } |
c906108c | 9336 | |
f00aae0f | 9337 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9338 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9339 | addresses found. LOCATION points to the end of the SAL (for |
9340 | linespec locations). | |
9998af43 TJB |
9341 | |
9342 | The array and the line spec strings are allocated on the heap, it is | |
9343 | the caller's responsibility to free them. */ | |
c906108c | 9344 | |
b9362cc7 | 9345 | static void |
f00aae0f | 9346 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9347 | struct linespec_result *canonical) |
c3f6f71d | 9348 | { |
f00aae0f KS |
9349 | struct symtab_and_line cursal; |
9350 | ||
9351 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9352 | { | |
9353 | const char *address = get_linespec_location (location); | |
9354 | ||
9355 | if (address == NULL) | |
9356 | { | |
9357 | /* The last displayed codepoint, if it's valid, is our default | |
9358 | breakpoint address. */ | |
9359 | if (last_displayed_sal_is_valid ()) | |
9360 | { | |
9361 | struct linespec_sals lsal; | |
9362 | struct symtab_and_line sal; | |
9363 | CORE_ADDR pc; | |
9364 | ||
9365 | init_sal (&sal); /* Initialize to zeroes. */ | |
9366 | lsal.sals.sals = (struct symtab_and_line *) | |
9367 | xmalloc (sizeof (struct symtab_and_line)); | |
9368 | ||
9369 | /* Set sal's pspace, pc, symtab, and line to the values | |
9370 | corresponding to the last call to print_frame_info. | |
9371 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9372 | as the breakpoint line number is inappropriate otherwise. | |
9373 | find_pc_line would adjust PC, re-set it back. */ | |
9374 | get_last_displayed_sal (&sal); | |
9375 | pc = sal.pc; | |
9376 | sal = find_pc_line (pc, 0); | |
9377 | ||
9378 | /* "break" without arguments is equivalent to "break *PC" | |
9379 | where PC is the last displayed codepoint's address. So | |
9380 | make sure to set sal.explicit_pc to prevent GDB from | |
9381 | trying to expand the list of sals to include all other | |
9382 | instances with the same symtab and line. */ | |
9383 | sal.pc = pc; | |
9384 | sal.explicit_pc = 1; | |
9385 | ||
9386 | lsal.sals.sals[0] = sal; | |
9387 | lsal.sals.nelts = 1; | |
9388 | lsal.canonical = NULL; | |
9389 | ||
9390 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
9391 | return; | |
9392 | } | |
9393 | else | |
9394 | error (_("No default breakpoint address now.")); | |
c906108c | 9395 | } |
c906108c | 9396 | } |
f00aae0f KS |
9397 | |
9398 | /* Force almost all breakpoints to be in terms of the | |
9399 | current_source_symtab (which is decode_line_1's default). | |
9400 | This should produce the results we want almost all of the | |
9401 | time while leaving default_breakpoint_* alone. | |
9402 | ||
9403 | ObjC: However, don't match an Objective-C method name which | |
9404 | may have a '+' or '-' succeeded by a '['. */ | |
9405 | cursal = get_current_source_symtab_and_line (); | |
9406 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9407 | { |
f00aae0f | 9408 | const char *address = NULL; |
cc80f267 | 9409 | |
f00aae0f KS |
9410 | if (event_location_type (location) == LINESPEC_LOCATION) |
9411 | address = get_linespec_location (location); | |
cc80f267 | 9412 | |
f00aae0f KS |
9413 | if (!cursal.symtab |
9414 | || (address != NULL | |
9415 | && strchr ("+-", address[0]) != NULL | |
9416 | && address[1] != '[')) | |
9417 | { | |
9418 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, | |
9419 | get_last_displayed_symtab (), | |
9420 | get_last_displayed_line (), | |
9421 | canonical, NULL, NULL); | |
9422 | return; | |
9423 | } | |
c906108c | 9424 | } |
f00aae0f KS |
9425 | |
9426 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, | |
9427 | cursal.symtab, cursal.line, canonical, NULL, NULL); | |
c3f6f71d | 9428 | } |
c906108c | 9429 | |
c906108c | 9430 | |
c3f6f71d | 9431 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9432 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9433 | |
b9362cc7 | 9434 | static void |
23e7acfb | 9435 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9436 | { |
9437 | int i; | |
cc59ec59 | 9438 | |
c3f6f71d | 9439 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9440 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9441 | } |
9442 | ||
7a697b8d SS |
9443 | /* Fast tracepoints may have restrictions on valid locations. For |
9444 | instance, a fast tracepoint using a jump instead of a trap will | |
9445 | likely have to overwrite more bytes than a trap would, and so can | |
9446 | only be placed where the instruction is longer than the jump, or a | |
9447 | multi-instruction sequence does not have a jump into the middle of | |
9448 | it, etc. */ | |
9449 | ||
9450 | static void | |
9451 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9452 | struct symtabs_and_lines *sals) | |
9453 | { | |
9454 | int i, rslt; | |
9455 | struct symtab_and_line *sal; | |
9456 | char *msg; | |
9457 | struct cleanup *old_chain; | |
9458 | ||
9459 | for (i = 0; i < sals->nelts; i++) | |
9460 | { | |
f8eba3c6 TT |
9461 | struct gdbarch *sarch; |
9462 | ||
7a697b8d SS |
9463 | sal = &sals->sals[i]; |
9464 | ||
f8eba3c6 TT |
9465 | sarch = get_sal_arch (*sal); |
9466 | /* We fall back to GDBARCH if there is no architecture | |
9467 | associated with SAL. */ | |
9468 | if (sarch == NULL) | |
9469 | sarch = gdbarch; | |
6b940e6a | 9470 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, &msg); |
7a697b8d SS |
9471 | old_chain = make_cleanup (xfree, msg); |
9472 | ||
9473 | if (!rslt) | |
9474 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9475 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9476 | |
9477 | do_cleanups (old_chain); | |
9478 | } | |
9479 | } | |
9480 | ||
af4908ba KS |
9481 | /* Issue an invalid thread ID error. */ |
9482 | ||
9483 | static void ATTRIBUTE_NORETURN | |
9484 | invalid_thread_id_error (int id) | |
9485 | { | |
9486 | error (_("Unknown thread %d."), id); | |
9487 | } | |
9488 | ||
018d34a4 VP |
9489 | /* Given TOK, a string specification of condition and thread, as |
9490 | accepted by the 'break' command, extract the condition | |
9491 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9492 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9493 | If no condition is found, *COND_STRING is set to NULL. |
9494 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9495 | |
9496 | static void | |
bbc13ae3 | 9497 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9498 | char **cond_string, int *thread, int *task, |
9499 | char **rest) | |
018d34a4 VP |
9500 | { |
9501 | *cond_string = NULL; | |
9502 | *thread = -1; | |
ed1d1739 KS |
9503 | *task = 0; |
9504 | *rest = NULL; | |
9505 | ||
018d34a4 VP |
9506 | while (tok && *tok) |
9507 | { | |
bbc13ae3 | 9508 | const char *end_tok; |
018d34a4 | 9509 | int toklen; |
bbc13ae3 KS |
9510 | const char *cond_start = NULL; |
9511 | const char *cond_end = NULL; | |
cc59ec59 | 9512 | |
bbc13ae3 | 9513 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9514 | |
9515 | if ((*tok == '"' || *tok == ',') && rest) | |
9516 | { | |
9517 | *rest = savestring (tok, strlen (tok)); | |
9518 | return; | |
9519 | } | |
9520 | ||
bbc13ae3 | 9521 | end_tok = skip_to_space_const (tok); |
d634f2de | 9522 | |
018d34a4 | 9523 | toklen = end_tok - tok; |
d634f2de | 9524 | |
018d34a4 VP |
9525 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9526 | { | |
f7545552 TT |
9527 | struct expression *expr; |
9528 | ||
018d34a4 | 9529 | tok = cond_start = end_tok + 1; |
1bb9788d | 9530 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9531 | xfree (expr); |
018d34a4 | 9532 | cond_end = tok; |
d634f2de | 9533 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9534 | } |
9535 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9536 | { | |
9537 | char *tmptok; | |
d634f2de | 9538 | |
018d34a4 | 9539 | tok = end_tok + 1; |
bbc13ae3 | 9540 | *thread = strtol (tok, &tmptok, 0); |
018d34a4 VP |
9541 | if (tok == tmptok) |
9542 | error (_("Junk after thread keyword.")); | |
9543 | if (!valid_thread_id (*thread)) | |
af4908ba | 9544 | invalid_thread_id_error (*thread); |
bbc13ae3 | 9545 | tok = tmptok; |
018d34a4 | 9546 | } |
4a306c9a JB |
9547 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9548 | { | |
9549 | char *tmptok; | |
9550 | ||
9551 | tok = end_tok + 1; | |
bbc13ae3 | 9552 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9553 | if (tok == tmptok) |
9554 | error (_("Junk after task keyword.")); | |
9555 | if (!valid_task_id (*task)) | |
b6199126 | 9556 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9557 | tok = tmptok; |
4a306c9a | 9558 | } |
e7e0cddf SS |
9559 | else if (rest) |
9560 | { | |
9561 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9562 | return; |
e7e0cddf | 9563 | } |
018d34a4 VP |
9564 | else |
9565 | error (_("Junk at end of arguments.")); | |
9566 | } | |
9567 | } | |
9568 | ||
0fb4aa4b PA |
9569 | /* Decode a static tracepoint marker spec. */ |
9570 | ||
9571 | static struct symtabs_and_lines | |
f00aae0f | 9572 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9573 | { |
9574 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9575 | struct symtabs_and_lines sals; | |
0fb4aa4b | 9576 | struct cleanup *old_chain; |
f00aae0f KS |
9577 | const char *p = &(*arg_p)[3]; |
9578 | const char *endp; | |
0fb4aa4b PA |
9579 | char *marker_str; |
9580 | int i; | |
9581 | ||
f00aae0f | 9582 | p = skip_spaces_const (p); |
0fb4aa4b | 9583 | |
f00aae0f | 9584 | endp = skip_to_space_const (p); |
0fb4aa4b PA |
9585 | |
9586 | marker_str = savestring (p, endp - p); | |
9587 | old_chain = make_cleanup (xfree, marker_str); | |
9588 | ||
9589 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9590 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9591 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9592 | ||
9593 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9594 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9595 | ||
9596 | for (i = 0; i < sals.nelts; i++) | |
9597 | { | |
9598 | struct static_tracepoint_marker *marker; | |
9599 | ||
9600 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9601 | ||
9602 | init_sal (&sals.sals[i]); | |
9603 | ||
9604 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9605 | sals.sals[i].pc = marker->address; | |
9606 | ||
9607 | release_static_tracepoint_marker (marker); | |
9608 | } | |
9609 | ||
9610 | do_cleanups (old_chain); | |
9611 | ||
9612 | *arg_p = endp; | |
9613 | return sals; | |
9614 | } | |
9615 | ||
f00aae0f | 9616 | /* See breakpoint.h. */ |
0101ce28 | 9617 | |
8cdf0e15 VP |
9618 | int |
9619 | create_breakpoint (struct gdbarch *gdbarch, | |
f00aae0f | 9620 | const struct event_location *location, char *cond_string, |
e7e0cddf | 9621 | int thread, char *extra_string, |
f00aae0f | 9622 | int parse_extra, |
0fb4aa4b | 9623 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9624 | int ignore_count, |
9625 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9626 | const struct breakpoint_ops *ops, |
44f238bb PA |
9627 | int from_tty, int enabled, int internal, |
9628 | unsigned flags) | |
c3f6f71d | 9629 | { |
7efd8fc2 | 9630 | struct linespec_result canonical; |
c3f6f71d | 9631 | struct cleanup *old_chain; |
80c99de1 | 9632 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9633 | int pending = 0; |
4a306c9a | 9634 | int task = 0; |
86b17b60 | 9635 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9636 | |
348d480f PA |
9637 | gdb_assert (ops != NULL); |
9638 | ||
f00aae0f KS |
9639 | /* If extra_string isn't useful, set it to NULL. */ |
9640 | if (extra_string != NULL && *extra_string == '\0') | |
9641 | extra_string = NULL; | |
9642 | ||
7efd8fc2 | 9643 | init_linespec_result (&canonical); |
c3f6f71d | 9644 | |
492d29ea | 9645 | TRY |
b78a6381 | 9646 | { |
f00aae0f | 9647 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9648 | } |
492d29ea | 9649 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9650 | { |
492d29ea PA |
9651 | /* If caller is interested in rc value from parse, set |
9652 | value. */ | |
9653 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9654 | { |
05ff989b AC |
9655 | /* If pending breakpoint support is turned off, throw |
9656 | error. */ | |
fa8d40ab JJ |
9657 | |
9658 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9659 | throw_exception (e); |
9660 | ||
9661 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9662 | |
05ff989b AC |
9663 | /* If pending breakpoint support is auto query and the user |
9664 | selects no, then simply return the error code. */ | |
059fb39f | 9665 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9666 | && !nquery (_("Make %s pending on future shared library load? "), |
9667 | bptype_string (type_wanted))) | |
fd9b8c24 | 9668 | return 0; |
fa8d40ab | 9669 | |
05ff989b AC |
9670 | /* At this point, either the user was queried about setting |
9671 | a pending breakpoint and selected yes, or pending | |
9672 | breakpoint behavior is on and thus a pending breakpoint | |
9673 | is defaulted on behalf of the user. */ | |
f00aae0f | 9674 | pending = 1; |
0101ce28 | 9675 | } |
492d29ea PA |
9676 | else |
9677 | throw_exception (e); | |
0101ce28 | 9678 | } |
492d29ea PA |
9679 | END_CATCH |
9680 | ||
f00aae0f | 9681 | if (!pending && VEC_empty (linespec_sals, canonical.sals)) |
492d29ea | 9682 | return 0; |
c3f6f71d | 9683 | |
4a64f543 | 9684 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9685 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9686 | |
c3f6f71d JM |
9687 | /* ----------------------------- SNIP ----------------------------- |
9688 | Anything added to the cleanup chain beyond this point is assumed | |
9689 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9690 | then the memory is not reclaimed. */ |
9691 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9692 | |
c3f6f71d JM |
9693 | /* Resolve all line numbers to PC's and verify that the addresses |
9694 | are ok for the target. */ | |
0101ce28 | 9695 | if (!pending) |
f8eba3c6 TT |
9696 | { |
9697 | int ix; | |
9698 | struct linespec_sals *iter; | |
9699 | ||
9700 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9701 | breakpoint_sals_to_pc (&iter->sals); | |
9702 | } | |
c3f6f71d | 9703 | |
7a697b8d | 9704 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9705 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9706 | { |
9707 | int ix; | |
9708 | struct linespec_sals *iter; | |
9709 | ||
9710 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9711 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9712 | } | |
7a697b8d | 9713 | |
c3f6f71d JM |
9714 | /* Verify that condition can be parsed, before setting any |
9715 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9716 | breakpoint. */ |
0101ce28 | 9717 | if (!pending) |
c3f6f71d | 9718 | { |
f00aae0f | 9719 | if (parse_extra) |
72b2ff0e | 9720 | { |
0878d0fa | 9721 | char *rest; |
52d361e1 YQ |
9722 | struct linespec_sals *lsal; |
9723 | ||
9724 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9725 | ||
0878d0fa YQ |
9726 | /* Here we only parse 'arg' to separate condition |
9727 | from thread number, so parsing in context of first | |
9728 | sal is OK. When setting the breakpoint we'll | |
9729 | re-parse it in context of each sal. */ | |
9730 | ||
f00aae0f KS |
9731 | find_condition_and_thread (extra_string, lsal->sals.sals[0].pc, |
9732 | &cond_string, &thread, &task, &rest); | |
0878d0fa YQ |
9733 | if (cond_string) |
9734 | make_cleanup (xfree, cond_string); | |
9735 | if (rest) | |
9736 | make_cleanup (xfree, rest); | |
9737 | if (rest) | |
9738 | extra_string = rest; | |
f00aae0f KS |
9739 | else |
9740 | extra_string = NULL; | |
72b2ff0e | 9741 | } |
2f069f6f | 9742 | else |
72b2ff0e | 9743 | { |
f00aae0f KS |
9744 | if (type_wanted != bp_dprintf |
9745 | && extra_string != NULL && *extra_string != '\0') | |
9746 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9747 | |
9748 | /* Create a private copy of condition string. */ | |
9749 | if (cond_string) | |
9750 | { | |
9751 | cond_string = xstrdup (cond_string); | |
9752 | make_cleanup (xfree, cond_string); | |
9753 | } | |
9754 | /* Create a private copy of any extra string. */ | |
9755 | if (extra_string) | |
9756 | { | |
9757 | extra_string = xstrdup (extra_string); | |
9758 | make_cleanup (xfree, extra_string); | |
9759 | } | |
72b2ff0e | 9760 | } |
0fb4aa4b | 9761 | |
52d361e1 | 9762 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e7e0cddf | 9763 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9764 | tempflag ? disp_del : disp_donttouch, |
9765 | thread, task, ignore_count, ops, | |
44f238bb | 9766 | from_tty, enabled, internal, flags); |
c906108c | 9767 | } |
0101ce28 JJ |
9768 | else |
9769 | { | |
0101ce28 JJ |
9770 | struct breakpoint *b; |
9771 | ||
bfccc43c YQ |
9772 | if (is_tracepoint_type (type_wanted)) |
9773 | { | |
9774 | struct tracepoint *t; | |
9775 | ||
9776 | t = XCNEW (struct tracepoint); | |
9777 | b = &t->base; | |
9778 | } | |
9779 | else | |
9780 | b = XNEW (struct breakpoint); | |
9781 | ||
9782 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
f00aae0f | 9783 | b->location = copy_event_location (location); |
bfccc43c | 9784 | |
f00aae0f KS |
9785 | if (parse_extra) |
9786 | b->cond_string = NULL; | |
e12c7713 MK |
9787 | else |
9788 | { | |
9789 | /* Create a private copy of condition string. */ | |
9790 | if (cond_string) | |
9791 | { | |
9792 | cond_string = xstrdup (cond_string); | |
9793 | make_cleanup (xfree, cond_string); | |
9794 | } | |
9795 | b->cond_string = cond_string; | |
15630549 | 9796 | b->thread = thread; |
e12c7713 | 9797 | } |
f00aae0f KS |
9798 | |
9799 | /* Create a private copy of any extra string. */ | |
9800 | if (extra_string != NULL) | |
9801 | { | |
9802 | extra_string = xstrdup (extra_string); | |
9803 | make_cleanup (xfree, extra_string); | |
9804 | } | |
9805 | b->extra_string = extra_string; | |
0101ce28 | 9806 | b->ignore_count = ignore_count; |
0101ce28 | 9807 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9808 | b->condition_not_parsed = 1; |
41447f92 | 9809 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9810 | if ((type_wanted != bp_breakpoint |
9811 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9812 | b->pspace = current_program_space; |
8bea4e01 | 9813 | |
bfccc43c | 9814 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9815 | } |
9816 | ||
f8eba3c6 | 9817 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9818 | { |
3e43a32a MS |
9819 | warning (_("Multiple breakpoints were set.\nUse the " |
9820 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9821 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9822 | } |
9823 | ||
80c99de1 PA |
9824 | /* That's it. Discard the cleanups for data inserted into the |
9825 | breakpoint. */ | |
9826 | discard_cleanups (bkpt_chain); | |
9827 | /* But cleanup everything else. */ | |
c3f6f71d | 9828 | do_cleanups (old_chain); |
217dc9e2 | 9829 | |
80c99de1 | 9830 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9831 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9832 | |
9833 | return 1; | |
c3f6f71d | 9834 | } |
c906108c | 9835 | |
348d480f | 9836 | /* Set a breakpoint. |
72b2ff0e VP |
9837 | ARG is a string describing breakpoint address, |
9838 | condition, and thread. | |
9839 | FLAG specifies if a breakpoint is hardware on, | |
9840 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9841 | and BP_TEMPFLAG. */ | |
348d480f | 9842 | |
98deb0da | 9843 | static void |
72b2ff0e | 9844 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9845 | { |
72b2ff0e | 9846 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9847 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9848 | ? bp_hardware_breakpoint | |
9849 | : bp_breakpoint); | |
55aa24fb | 9850 | struct breakpoint_ops *ops; |
f00aae0f KS |
9851 | struct event_location *location; |
9852 | struct cleanup *cleanup; | |
9853 | ||
9854 | location = string_to_event_location (&arg, current_language); | |
9855 | cleanup = make_cleanup_delete_event_location (location); | |
55aa24fb SDJ |
9856 | |
9857 | /* Matching breakpoints on probes. */ | |
5b56227b KS |
9858 | if (location != NULL |
9859 | && event_location_type (location) == PROBE_LOCATION) | |
55aa24fb SDJ |
9860 | ops = &bkpt_probe_breakpoint_ops; |
9861 | else | |
9862 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9863 | |
8cdf0e15 | 9864 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
9865 | location, |
9866 | NULL, 0, arg, 1 /* parse arg */, | |
0fb4aa4b | 9867 | tempflag, type_wanted, |
8cdf0e15 VP |
9868 | 0 /* Ignore count */, |
9869 | pending_break_support, | |
55aa24fb | 9870 | ops, |
8cdf0e15 | 9871 | from_tty, |
84f4c1fe | 9872 | 1 /* enabled */, |
44f238bb PA |
9873 | 0 /* internal */, |
9874 | 0); | |
f00aae0f | 9875 | do_cleanups (cleanup); |
c906108c SS |
9876 | } |
9877 | ||
c906108c SS |
9878 | /* Helper function for break_command_1 and disassemble_command. */ |
9879 | ||
9880 | void | |
fba45db2 | 9881 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9882 | { |
9883 | CORE_ADDR pc; | |
9884 | ||
9885 | if (sal->pc == 0 && sal->symtab != NULL) | |
9886 | { | |
9887 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9888 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9889 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9890 | sal->pc = pc; |
6a048695 | 9891 | |
4a64f543 MS |
9892 | /* If this SAL corresponds to a breakpoint inserted using a line |
9893 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9894 | if (sal->explicit_line) |
059acae7 | 9895 | skip_prologue_sal (sal); |
c906108c SS |
9896 | } |
9897 | ||
9898 | if (sal->section == 0 && sal->symtab != NULL) | |
9899 | { | |
346d1dfe | 9900 | const struct blockvector *bv; |
3977b71f | 9901 | const struct block *b; |
c5aa993b | 9902 | struct symbol *sym; |
c906108c | 9903 | |
43f3e411 DE |
9904 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9905 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9906 | if (bv != NULL) |
9907 | { | |
7f0df278 | 9908 | sym = block_linkage_function (b); |
c906108c SS |
9909 | if (sym != NULL) |
9910 | { | |
eb822aa6 DE |
9911 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9912 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9913 | sym); | |
c906108c SS |
9914 | } |
9915 | else | |
9916 | { | |
4a64f543 MS |
9917 | /* It really is worthwhile to have the section, so we'll |
9918 | just have to look harder. This case can be executed | |
9919 | if we have line numbers but no functions (as can | |
9920 | happen in assembly source). */ | |
c906108c | 9921 | |
7cbd4a93 | 9922 | struct bound_minimal_symbol msym; |
6c95b8df PA |
9923 | struct cleanup *old_chain = save_current_space_and_thread (); |
9924 | ||
9925 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9926 | |
9927 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7cbd4a93 | 9928 | if (msym.minsym) |
efd66ac6 | 9929 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
6c95b8df PA |
9930 | |
9931 | do_cleanups (old_chain); | |
c906108c SS |
9932 | } |
9933 | } | |
9934 | } | |
9935 | } | |
9936 | ||
9937 | void | |
fba45db2 | 9938 | break_command (char *arg, int from_tty) |
c906108c | 9939 | { |
db107f19 | 9940 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9941 | } |
9942 | ||
c906108c | 9943 | void |
fba45db2 | 9944 | tbreak_command (char *arg, int from_tty) |
c906108c | 9945 | { |
db107f19 | 9946 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9947 | } |
9948 | ||
c906108c | 9949 | static void |
fba45db2 | 9950 | hbreak_command (char *arg, int from_tty) |
c906108c | 9951 | { |
db107f19 | 9952 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9953 | } |
9954 | ||
9955 | static void | |
fba45db2 | 9956 | thbreak_command (char *arg, int from_tty) |
c906108c | 9957 | { |
db107f19 | 9958 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9959 | } |
9960 | ||
9961 | static void | |
fba45db2 | 9962 | stop_command (char *arg, int from_tty) |
c906108c | 9963 | { |
a3f17187 | 9964 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9965 | Usage: stop in <function | address>\n\ |
a3f17187 | 9966 | stop at <line>\n")); |
c906108c SS |
9967 | } |
9968 | ||
9969 | static void | |
fba45db2 | 9970 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9971 | { |
9972 | int badInput = 0; | |
9973 | ||
c5aa993b | 9974 | if (arg == (char *) NULL) |
c906108c SS |
9975 | badInput = 1; |
9976 | else if (*arg != '*') | |
9977 | { | |
9978 | char *argptr = arg; | |
9979 | int hasColon = 0; | |
9980 | ||
4a64f543 | 9981 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9982 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9983 | function/method name. */ |
c906108c | 9984 | while (*argptr && !hasColon) |
c5aa993b JM |
9985 | { |
9986 | hasColon = (*argptr == ':'); | |
9987 | argptr++; | |
9988 | } | |
c906108c SS |
9989 | |
9990 | if (hasColon) | |
c5aa993b | 9991 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9992 | else |
c5aa993b | 9993 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9994 | } |
9995 | ||
9996 | if (badInput) | |
a3f17187 | 9997 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9998 | else |
db107f19 | 9999 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10000 | } |
10001 | ||
10002 | static void | |
fba45db2 | 10003 | stopat_command (char *arg, int from_tty) |
c906108c SS |
10004 | { |
10005 | int badInput = 0; | |
10006 | ||
c5aa993b | 10007 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
10008 | badInput = 1; |
10009 | else | |
10010 | { | |
10011 | char *argptr = arg; | |
10012 | int hasColon = 0; | |
10013 | ||
4a64f543 MS |
10014 | /* Look for a ':'. If there is a '::' then get out, otherwise |
10015 | it is probably a line number. */ | |
c906108c | 10016 | while (*argptr && !hasColon) |
c5aa993b JM |
10017 | { |
10018 | hasColon = (*argptr == ':'); | |
10019 | argptr++; | |
10020 | } | |
c906108c SS |
10021 | |
10022 | if (hasColon) | |
c5aa993b | 10023 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 10024 | else |
c5aa993b | 10025 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
10026 | } |
10027 | ||
10028 | if (badInput) | |
a3f17187 | 10029 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 10030 | else |
db107f19 | 10031 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10032 | } |
10033 | ||
e7e0cddf SS |
10034 | /* The dynamic printf command is mostly like a regular breakpoint, but |
10035 | with a prewired command list consisting of a single output command, | |
10036 | built from extra arguments supplied on the dprintf command | |
10037 | line. */ | |
10038 | ||
da821c7b | 10039 | static void |
e7e0cddf SS |
10040 | dprintf_command (char *arg, int from_tty) |
10041 | { | |
f00aae0f KS |
10042 | struct event_location *location; |
10043 | struct cleanup *cleanup; | |
10044 | ||
10045 | location = string_to_event_location (&arg, current_language); | |
10046 | cleanup = make_cleanup_delete_event_location (location); | |
10047 | ||
10048 | /* If non-NULL, ARG should have been advanced past the location; | |
10049 | the next character must be ','. */ | |
10050 | if (arg != NULL) | |
10051 | { | |
10052 | if (arg[0] != ',' || arg[1] == '\0') | |
10053 | error (_("Format string required")); | |
10054 | else | |
10055 | { | |
10056 | /* Skip the comma. */ | |
10057 | ++arg; | |
10058 | } | |
10059 | } | |
10060 | ||
e7e0cddf | 10061 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
10062 | location, |
10063 | NULL, 0, arg, 1 /* parse arg */, | |
e7e0cddf SS |
10064 | 0, bp_dprintf, |
10065 | 0 /* Ignore count */, | |
10066 | pending_break_support, | |
10067 | &dprintf_breakpoint_ops, | |
10068 | from_tty, | |
10069 | 1 /* enabled */, | |
10070 | 0 /* internal */, | |
10071 | 0); | |
f00aae0f | 10072 | do_cleanups (cleanup); |
e7e0cddf SS |
10073 | } |
10074 | ||
d3ce09f5 SS |
10075 | static void |
10076 | agent_printf_command (char *arg, int from_tty) | |
10077 | { | |
10078 | error (_("May only run agent-printf on the target")); | |
10079 | } | |
10080 | ||
f1310107 TJB |
10081 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
10082 | ranged breakpoints. */ | |
10083 | ||
10084 | static int | |
10085 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
10086 | struct address_space *aspace, | |
09ac7c10 TT |
10087 | CORE_ADDR bp_addr, |
10088 | const struct target_waitstatus *ws) | |
f1310107 | 10089 | { |
09ac7c10 | 10090 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 10091 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
10092 | return 0; |
10093 | ||
f1310107 TJB |
10094 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
10095 | bl->length, aspace, bp_addr); | |
10096 | } | |
10097 | ||
10098 | /* Implement the "resources_needed" breakpoint_ops method for | |
10099 | ranged breakpoints. */ | |
10100 | ||
10101 | static int | |
10102 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
10103 | { | |
10104 | return target_ranged_break_num_registers (); | |
10105 | } | |
10106 | ||
10107 | /* Implement the "print_it" breakpoint_ops method for | |
10108 | ranged breakpoints. */ | |
10109 | ||
10110 | static enum print_stop_action | |
348d480f | 10111 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 10112 | { |
348d480f | 10113 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 10114 | struct bp_location *bl = b->loc; |
79a45e25 | 10115 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10116 | |
10117 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10118 | ||
10119 | /* Ranged breakpoints have only one location. */ | |
10120 | gdb_assert (bl && bl->next == NULL); | |
10121 | ||
10122 | annotate_breakpoint (b->number); | |
10123 | if (b->disposition == disp_del) | |
10124 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
10125 | else | |
10126 | ui_out_text (uiout, "\nRanged breakpoint "); | |
10127 | if (ui_out_is_mi_like_p (uiout)) | |
10128 | { | |
10129 | ui_out_field_string (uiout, "reason", | |
10130 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
10131 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
10132 | } | |
10133 | ui_out_field_int (uiout, "bkptno", b->number); | |
10134 | ui_out_text (uiout, ", "); | |
10135 | ||
10136 | return PRINT_SRC_AND_LOC; | |
10137 | } | |
10138 | ||
10139 | /* Implement the "print_one" breakpoint_ops method for | |
10140 | ranged breakpoints. */ | |
10141 | ||
10142 | static void | |
10143 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10144 | struct bp_location **last_loc) | |
10145 | { | |
10146 | struct bp_location *bl = b->loc; | |
10147 | struct value_print_options opts; | |
79a45e25 | 10148 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10149 | |
10150 | /* Ranged breakpoints have only one location. */ | |
10151 | gdb_assert (bl && bl->next == NULL); | |
10152 | ||
10153 | get_user_print_options (&opts); | |
10154 | ||
10155 | if (opts.addressprint) | |
10156 | /* We don't print the address range here, it will be printed later | |
10157 | by print_one_detail_ranged_breakpoint. */ | |
10158 | ui_out_field_skip (uiout, "addr"); | |
10159 | annotate_field (5); | |
10160 | print_breakpoint_location (b, bl); | |
10161 | *last_loc = bl; | |
10162 | } | |
10163 | ||
10164 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10165 | ranged breakpoints. */ | |
10166 | ||
10167 | static void | |
10168 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10169 | struct ui_out *uiout) | |
10170 | { | |
10171 | CORE_ADDR address_start, address_end; | |
10172 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10173 | struct ui_file *stb = mem_fileopen (); |
10174 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10175 | |
10176 | gdb_assert (bl); | |
10177 | ||
10178 | address_start = bl->address; | |
10179 | address_end = address_start + bl->length - 1; | |
10180 | ||
10181 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10182 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10183 | print_core_address (bl->gdbarch, address_start), |
10184 | print_core_address (bl->gdbarch, address_end)); | |
10185 | ui_out_field_stream (uiout, "addr", stb); | |
10186 | ui_out_text (uiout, "\n"); | |
10187 | ||
10188 | do_cleanups (cleanup); | |
10189 | } | |
10190 | ||
10191 | /* Implement the "print_mention" breakpoint_ops method for | |
10192 | ranged breakpoints. */ | |
10193 | ||
10194 | static void | |
10195 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10196 | { | |
10197 | struct bp_location *bl = b->loc; | |
79a45e25 | 10198 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10199 | |
10200 | gdb_assert (bl); | |
10201 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10202 | ||
10203 | if (ui_out_is_mi_like_p (uiout)) | |
10204 | return; | |
10205 | ||
10206 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10207 | b->number, paddress (bl->gdbarch, bl->address), | |
10208 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10209 | } | |
10210 | ||
10211 | /* Implement the "print_recreate" breakpoint_ops method for | |
10212 | ranged breakpoints. */ | |
10213 | ||
10214 | static void | |
10215 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10216 | { | |
f00aae0f KS |
10217 | fprintf_unfiltered (fp, "break-range %s, %s", |
10218 | event_location_to_string (b->location), | |
10219 | event_location_to_string (b->location_range_end)); | |
d9b3f62e | 10220 | print_recreate_thread (b, fp); |
f1310107 TJB |
10221 | } |
10222 | ||
10223 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10224 | ||
2060206e | 10225 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10226 | |
10227 | /* Find the address where the end of the breakpoint range should be | |
10228 | placed, given the SAL of the end of the range. This is so that if | |
10229 | the user provides a line number, the end of the range is set to the | |
10230 | last instruction of the given line. */ | |
10231 | ||
10232 | static CORE_ADDR | |
10233 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10234 | { | |
10235 | CORE_ADDR end; | |
10236 | ||
10237 | /* If the user provided a PC value, use it. Otherwise, | |
10238 | find the address of the end of the given location. */ | |
10239 | if (sal.explicit_pc) | |
10240 | end = sal.pc; | |
10241 | else | |
10242 | { | |
10243 | int ret; | |
10244 | CORE_ADDR start; | |
10245 | ||
10246 | ret = find_line_pc_range (sal, &start, &end); | |
10247 | if (!ret) | |
10248 | error (_("Could not find location of the end of the range.")); | |
10249 | ||
10250 | /* find_line_pc_range returns the start of the next line. */ | |
10251 | end--; | |
10252 | } | |
10253 | ||
10254 | return end; | |
10255 | } | |
10256 | ||
10257 | /* Implement the "break-range" CLI command. */ | |
10258 | ||
10259 | static void | |
10260 | break_range_command (char *arg, int from_tty) | |
10261 | { | |
10262 | char *arg_start, *addr_string_start, *addr_string_end; | |
10263 | struct linespec_result canonical_start, canonical_end; | |
10264 | int bp_count, can_use_bp, length; | |
10265 | CORE_ADDR end; | |
10266 | struct breakpoint *b; | |
10267 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10268 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10269 | struct linespec_sals *lsal_start, *lsal_end; |
f00aae0f | 10270 | struct event_location *start_location, *end_location; |
f1310107 TJB |
10271 | |
10272 | /* We don't support software ranged breakpoints. */ | |
10273 | if (target_ranged_break_num_registers () < 0) | |
10274 | error (_("This target does not support hardware ranged breakpoints.")); | |
10275 | ||
10276 | bp_count = hw_breakpoint_used_count (); | |
10277 | bp_count += target_ranged_break_num_registers (); | |
10278 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10279 | bp_count, 0); | |
10280 | if (can_use_bp < 0) | |
10281 | error (_("Hardware breakpoints used exceeds limit.")); | |
10282 | ||
f8eba3c6 | 10283 | arg = skip_spaces (arg); |
f1310107 TJB |
10284 | if (arg == NULL || arg[0] == '\0') |
10285 | error(_("No address range specified.")); | |
10286 | ||
f1310107 TJB |
10287 | init_linespec_result (&canonical_start); |
10288 | ||
f8eba3c6 | 10289 | arg_start = arg; |
f00aae0f KS |
10290 | start_location = string_to_event_location (&arg, current_language); |
10291 | cleanup_bkpt = make_cleanup_delete_event_location (start_location); | |
10292 | parse_breakpoint_sals (start_location, &canonical_start); | |
10293 | make_cleanup_destroy_linespec_result (&canonical_start); | |
f1310107 TJB |
10294 | |
10295 | if (arg[0] != ',') | |
10296 | error (_("Too few arguments.")); | |
f8eba3c6 | 10297 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10298 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10299 | |
10300 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10301 | ||
10302 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10303 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10304 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10305 | ||
f8eba3c6 TT |
10306 | sal_start = lsal_start->sals.sals[0]; |
10307 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10308 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10309 | |
10310 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10311 | arg = skip_spaces (arg); |
f1310107 TJB |
10312 | |
10313 | /* Parse the end location. */ | |
10314 | ||
f1310107 TJB |
10315 | init_linespec_result (&canonical_end); |
10316 | arg_start = arg; | |
10317 | ||
f8eba3c6 | 10318 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10319 | parse_breakpoint_sals because we need to specify the start location's |
10320 | symtab and line as the default symtab and line for the end of the | |
10321 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10322 | where +14 means 14 lines from the start location. */ | |
f00aae0f KS |
10323 | end_location = string_to_event_location (&arg, current_language); |
10324 | make_cleanup_delete_event_location (end_location); | |
10325 | decode_line_full (end_location, DECODE_LINE_FUNFIRSTLINE, | |
f8eba3c6 TT |
10326 | sal_start.symtab, sal_start.line, |
10327 | &canonical_end, NULL, NULL); | |
10328 | ||
10329 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10330 | |
f8eba3c6 | 10331 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10332 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10333 | |
10334 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10335 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10336 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10337 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10338 | ||
f8eba3c6 | 10339 | sal_end = lsal_end->sals.sals[0]; |
f1310107 TJB |
10340 | |
10341 | end = find_breakpoint_range_end (sal_end); | |
10342 | if (sal_start.pc > end) | |
177b42fe | 10343 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10344 | |
10345 | length = end - sal_start.pc + 1; | |
10346 | if (length < 0) | |
10347 | /* Length overflowed. */ | |
10348 | error (_("Address range too large.")); | |
10349 | else if (length == 1) | |
10350 | { | |
10351 | /* This range is simple enough to be handled by | |
10352 | the `hbreak' command. */ | |
10353 | hbreak_command (addr_string_start, 1); | |
10354 | ||
10355 | do_cleanups (cleanup_bkpt); | |
10356 | ||
10357 | return; | |
10358 | } | |
10359 | ||
10360 | /* Now set up the breakpoint. */ | |
10361 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10362 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10363 | set_breakpoint_count (breakpoint_count + 1); |
10364 | b->number = breakpoint_count; | |
10365 | b->disposition = disp_donttouch; | |
f00aae0f KS |
10366 | b->location = copy_event_location (start_location); |
10367 | b->location_range_end = copy_event_location (end_location); | |
f1310107 TJB |
10368 | b->loc->length = length; |
10369 | ||
f8eba3c6 | 10370 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10371 | |
10372 | mention (b); | |
8d3788bd | 10373 | observer_notify_breakpoint_created (b); |
44702360 | 10374 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10375 | } |
10376 | ||
4a64f543 MS |
10377 | /* Return non-zero if EXP is verified as constant. Returned zero |
10378 | means EXP is variable. Also the constant detection may fail for | |
10379 | some constant expressions and in such case still falsely return | |
10380 | zero. */ | |
2e6e3d9c | 10381 | |
65d79d4b SDJ |
10382 | static int |
10383 | watchpoint_exp_is_const (const struct expression *exp) | |
10384 | { | |
10385 | int i = exp->nelts; | |
10386 | ||
10387 | while (i > 0) | |
10388 | { | |
10389 | int oplenp, argsp; | |
10390 | ||
10391 | /* We are only interested in the descriptor of each element. */ | |
10392 | operator_length (exp, i, &oplenp, &argsp); | |
10393 | i -= oplenp; | |
10394 | ||
10395 | switch (exp->elts[i].opcode) | |
10396 | { | |
10397 | case BINOP_ADD: | |
10398 | case BINOP_SUB: | |
10399 | case BINOP_MUL: | |
10400 | case BINOP_DIV: | |
10401 | case BINOP_REM: | |
10402 | case BINOP_MOD: | |
10403 | case BINOP_LSH: | |
10404 | case BINOP_RSH: | |
10405 | case BINOP_LOGICAL_AND: | |
10406 | case BINOP_LOGICAL_OR: | |
10407 | case BINOP_BITWISE_AND: | |
10408 | case BINOP_BITWISE_IOR: | |
10409 | case BINOP_BITWISE_XOR: | |
10410 | case BINOP_EQUAL: | |
10411 | case BINOP_NOTEQUAL: | |
10412 | case BINOP_LESS: | |
10413 | case BINOP_GTR: | |
10414 | case BINOP_LEQ: | |
10415 | case BINOP_GEQ: | |
10416 | case BINOP_REPEAT: | |
10417 | case BINOP_COMMA: | |
10418 | case BINOP_EXP: | |
10419 | case BINOP_MIN: | |
10420 | case BINOP_MAX: | |
10421 | case BINOP_INTDIV: | |
10422 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10423 | case TERNOP_COND: |
10424 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10425 | |
10426 | case OP_LONG: | |
10427 | case OP_DOUBLE: | |
10428 | case OP_DECFLOAT: | |
10429 | case OP_LAST: | |
10430 | case OP_COMPLEX: | |
10431 | case OP_STRING: | |
65d79d4b SDJ |
10432 | case OP_ARRAY: |
10433 | case OP_TYPE: | |
608b4967 TT |
10434 | case OP_TYPEOF: |
10435 | case OP_DECLTYPE: | |
6e72ca20 | 10436 | case OP_TYPEID: |
65d79d4b SDJ |
10437 | case OP_NAME: |
10438 | case OP_OBJC_NSSTRING: | |
10439 | ||
10440 | case UNOP_NEG: | |
10441 | case UNOP_LOGICAL_NOT: | |
10442 | case UNOP_COMPLEMENT: | |
10443 | case UNOP_ADDR: | |
10444 | case UNOP_HIGH: | |
aeaa2474 | 10445 | case UNOP_CAST: |
9eaf6705 TT |
10446 | |
10447 | case UNOP_CAST_TYPE: | |
10448 | case UNOP_REINTERPRET_CAST: | |
10449 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10450 | /* Unary, binary and ternary operators: We have to check |
10451 | their operands. If they are constant, then so is the | |
10452 | result of that operation. For instance, if A and B are | |
10453 | determined to be constants, then so is "A + B". | |
10454 | ||
10455 | UNOP_IND is one exception to the rule above, because the | |
10456 | value of *ADDR is not necessarily a constant, even when | |
10457 | ADDR is. */ | |
65d79d4b SDJ |
10458 | break; |
10459 | ||
10460 | case OP_VAR_VALUE: | |
10461 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10462 | |
65d79d4b | 10463 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10464 | possible that a buggy compiler could mark a variable as |
10465 | constant even when it is not, and TYPE_CONST would return | |
10466 | true in this case, while SYMBOL_CLASS wouldn't. | |
10467 | ||
10468 | We also have to check for function symbols because they | |
10469 | are always constant. */ | |
65d79d4b SDJ |
10470 | { |
10471 | struct symbol *s = exp->elts[i + 2].symbol; | |
10472 | ||
10473 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10474 | && SYMBOL_CLASS (s) != LOC_CONST | |
10475 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10476 | return 0; | |
10477 | break; | |
10478 | } | |
10479 | ||
10480 | /* The default action is to return 0 because we are using | |
10481 | the optimistic approach here: If we don't know something, | |
10482 | then it is not a constant. */ | |
10483 | default: | |
10484 | return 0; | |
10485 | } | |
10486 | } | |
10487 | ||
10488 | return 1; | |
10489 | } | |
10490 | ||
3a5c3e22 PA |
10491 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10492 | ||
10493 | static void | |
10494 | dtor_watchpoint (struct breakpoint *self) | |
10495 | { | |
10496 | struct watchpoint *w = (struct watchpoint *) self; | |
10497 | ||
10498 | xfree (w->cond_exp); | |
10499 | xfree (w->exp); | |
10500 | xfree (w->exp_string); | |
10501 | xfree (w->exp_string_reparse); | |
10502 | value_free (w->val); | |
10503 | ||
10504 | base_breakpoint_ops.dtor (self); | |
10505 | } | |
10506 | ||
348d480f PA |
10507 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10508 | ||
10509 | static void | |
10510 | re_set_watchpoint (struct breakpoint *b) | |
10511 | { | |
3a5c3e22 PA |
10512 | struct watchpoint *w = (struct watchpoint *) b; |
10513 | ||
348d480f PA |
10514 | /* Watchpoint can be either on expression using entirely global |
10515 | variables, or it can be on local variables. | |
10516 | ||
10517 | Watchpoints of the first kind are never auto-deleted, and even | |
10518 | persist across program restarts. Since they can use variables | |
10519 | from shared libraries, we need to reparse expression as libraries | |
10520 | are loaded and unloaded. | |
10521 | ||
10522 | Watchpoints on local variables can also change meaning as result | |
10523 | of solib event. For example, if a watchpoint uses both a local | |
10524 | and a global variables in expression, it's a local watchpoint, | |
10525 | but unloading of a shared library will make the expression | |
10526 | invalid. This is not a very common use case, but we still | |
10527 | re-evaluate expression, to avoid surprises to the user. | |
10528 | ||
10529 | Note that for local watchpoints, we re-evaluate it only if | |
10530 | watchpoints frame id is still valid. If it's not, it means the | |
10531 | watchpoint is out of scope and will be deleted soon. In fact, | |
10532 | I'm not sure we'll ever be called in this case. | |
10533 | ||
10534 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10535 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10536 | |
3a5c3e22 PA |
10537 | Don't do anything about disabled watchpoints, since they will be |
10538 | reevaluated again when enabled. */ | |
10539 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10540 | } |
10541 | ||
77b06cd7 TJB |
10542 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10543 | ||
10544 | static int | |
10545 | insert_watchpoint (struct bp_location *bl) | |
10546 | { | |
3a5c3e22 PA |
10547 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10548 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10549 | |
10550 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10551 | w->cond_exp); |
77b06cd7 TJB |
10552 | } |
10553 | ||
10554 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10555 | ||
10556 | static int | |
10557 | remove_watchpoint (struct bp_location *bl) | |
10558 | { | |
3a5c3e22 PA |
10559 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10560 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10561 | |
10562 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10563 | w->cond_exp); |
e09342b5 TJB |
10564 | } |
10565 | ||
e09342b5 | 10566 | static int |
348d480f | 10567 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10568 | struct address_space *aspace, CORE_ADDR bp_addr, |
10569 | const struct target_waitstatus *ws) | |
e09342b5 | 10570 | { |
348d480f | 10571 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10572 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10573 | |
348d480f PA |
10574 | /* Continuable hardware watchpoints are treated as non-existent if the |
10575 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10576 | some data address). Otherwise gdb won't stop on a break instruction | |
10577 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10578 | been defined. Also skip watchpoints which we know did not trigger | |
10579 | (did not match the data address). */ | |
10580 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10581 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10582 | return 0; |
9c06b0b4 | 10583 | |
348d480f | 10584 | return 1; |
9c06b0b4 TJB |
10585 | } |
10586 | ||
348d480f PA |
10587 | static void |
10588 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10589 | { |
348d480f | 10590 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10591 | |
348d480f | 10592 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10593 | } |
10594 | ||
10595 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10596 | hardware watchpoints. */ |
9c06b0b4 TJB |
10597 | |
10598 | static int | |
348d480f | 10599 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10600 | { |
3a5c3e22 PA |
10601 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10602 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10603 | |
10604 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10605 | } |
10606 | ||
10607 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10608 | hardware watchpoints. */ |
9c06b0b4 TJB |
10609 | |
10610 | static int | |
348d480f | 10611 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10612 | { |
efa80663 PA |
10613 | /* Read and access watchpoints only work with hardware support. */ |
10614 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10615 | } |
10616 | ||
9c06b0b4 | 10617 | static enum print_stop_action |
348d480f | 10618 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10619 | { |
348d480f PA |
10620 | struct cleanup *old_chain; |
10621 | struct breakpoint *b; | |
f99d8bf4 | 10622 | struct ui_file *stb; |
348d480f | 10623 | enum print_stop_action result; |
3a5c3e22 | 10624 | struct watchpoint *w; |
79a45e25 | 10625 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10626 | |
10627 | gdb_assert (bs->bp_location_at != NULL); | |
10628 | ||
348d480f | 10629 | b = bs->breakpoint_at; |
3a5c3e22 | 10630 | w = (struct watchpoint *) b; |
348d480f | 10631 | |
f99d8bf4 PA |
10632 | stb = mem_fileopen (); |
10633 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10634 | |
10635 | switch (b->type) | |
10636 | { | |
348d480f | 10637 | case bp_watchpoint: |
9c06b0b4 TJB |
10638 | case bp_hardware_watchpoint: |
10639 | annotate_watchpoint (b->number); | |
10640 | if (ui_out_is_mi_like_p (uiout)) | |
10641 | ui_out_field_string | |
10642 | (uiout, "reason", | |
10643 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10644 | mention (b); |
10645 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10646 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10647 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10648 | ui_out_field_stream (uiout, "old", stb); |
10649 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10650 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10651 | ui_out_field_stream (uiout, "new", stb); |
10652 | ui_out_text (uiout, "\n"); | |
10653 | /* More than one watchpoint may have been triggered. */ | |
10654 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10655 | break; |
10656 | ||
10657 | case bp_read_watchpoint: | |
10658 | if (ui_out_is_mi_like_p (uiout)) | |
10659 | ui_out_field_string | |
10660 | (uiout, "reason", | |
10661 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10662 | mention (b); |
10663 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10664 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10665 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10666 | ui_out_field_stream (uiout, "value", stb); |
10667 | ui_out_text (uiout, "\n"); | |
10668 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10669 | break; |
10670 | ||
10671 | case bp_access_watchpoint: | |
348d480f PA |
10672 | if (bs->old_val != NULL) |
10673 | { | |
10674 | annotate_watchpoint (b->number); | |
10675 | if (ui_out_is_mi_like_p (uiout)) | |
10676 | ui_out_field_string | |
10677 | (uiout, "reason", | |
10678 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10679 | mention (b); | |
10680 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10681 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10682 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10683 | ui_out_field_stream (uiout, "old", stb); |
10684 | ui_out_text (uiout, "\nNew value = "); | |
10685 | } | |
10686 | else | |
10687 | { | |
10688 | mention (b); | |
10689 | if (ui_out_is_mi_like_p (uiout)) | |
10690 | ui_out_field_string | |
10691 | (uiout, "reason", | |
10692 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10693 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10694 | ui_out_text (uiout, "\nValue = "); | |
10695 | } | |
f99d8bf4 | 10696 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10697 | ui_out_field_stream (uiout, "new", stb); |
10698 | ui_out_text (uiout, "\n"); | |
10699 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10700 | break; |
10701 | default: | |
348d480f | 10702 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10703 | } |
10704 | ||
348d480f PA |
10705 | do_cleanups (old_chain); |
10706 | return result; | |
10707 | } | |
10708 | ||
10709 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10710 | watchpoints. */ | |
10711 | ||
10712 | static void | |
10713 | print_mention_watchpoint (struct breakpoint *b) | |
10714 | { | |
10715 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10716 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10717 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10718 | |
10719 | switch (b->type) | |
10720 | { | |
10721 | case bp_watchpoint: | |
10722 | ui_out_text (uiout, "Watchpoint "); | |
10723 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10724 | break; | |
10725 | case bp_hardware_watchpoint: | |
10726 | ui_out_text (uiout, "Hardware watchpoint "); | |
10727 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10728 | break; | |
10729 | case bp_read_watchpoint: | |
10730 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10731 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10732 | break; | |
10733 | case bp_access_watchpoint: | |
10734 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10735 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10736 | break; | |
10737 | default: | |
10738 | internal_error (__FILE__, __LINE__, | |
10739 | _("Invalid hardware watchpoint type.")); | |
10740 | } | |
10741 | ||
10742 | ui_out_field_int (uiout, "number", b->number); | |
10743 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10744 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10745 | do_cleanups (ui_out_chain); |
10746 | } | |
10747 | ||
10748 | /* Implement the "print_recreate" breakpoint_ops method for | |
10749 | watchpoints. */ | |
10750 | ||
10751 | static void | |
10752 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10753 | { | |
3a5c3e22 PA |
10754 | struct watchpoint *w = (struct watchpoint *) b; |
10755 | ||
348d480f PA |
10756 | switch (b->type) |
10757 | { | |
10758 | case bp_watchpoint: | |
10759 | case bp_hardware_watchpoint: | |
10760 | fprintf_unfiltered (fp, "watch"); | |
10761 | break; | |
10762 | case bp_read_watchpoint: | |
10763 | fprintf_unfiltered (fp, "rwatch"); | |
10764 | break; | |
10765 | case bp_access_watchpoint: | |
10766 | fprintf_unfiltered (fp, "awatch"); | |
10767 | break; | |
10768 | default: | |
10769 | internal_error (__FILE__, __LINE__, | |
10770 | _("Invalid watchpoint type.")); | |
10771 | } | |
10772 | ||
3a5c3e22 | 10773 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10774 | print_recreate_thread (b, fp); |
348d480f PA |
10775 | } |
10776 | ||
427cd150 TT |
10777 | /* Implement the "explains_signal" breakpoint_ops method for |
10778 | watchpoints. */ | |
10779 | ||
47591c29 | 10780 | static int |
427cd150 TT |
10781 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10782 | { | |
10783 | /* A software watchpoint cannot cause a signal other than | |
10784 | GDB_SIGNAL_TRAP. */ | |
10785 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10786 | return 0; |
427cd150 | 10787 | |
47591c29 | 10788 | return 1; |
427cd150 TT |
10789 | } |
10790 | ||
348d480f PA |
10791 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10792 | ||
2060206e | 10793 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10794 | |
10795 | /* Implement the "insert" breakpoint_ops method for | |
10796 | masked hardware watchpoints. */ | |
10797 | ||
10798 | static int | |
10799 | insert_masked_watchpoint (struct bp_location *bl) | |
10800 | { | |
3a5c3e22 PA |
10801 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10802 | ||
10803 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10804 | bl->watchpoint_type); |
10805 | } | |
10806 | ||
10807 | /* Implement the "remove" breakpoint_ops method for | |
10808 | masked hardware watchpoints. */ | |
10809 | ||
10810 | static int | |
10811 | remove_masked_watchpoint (struct bp_location *bl) | |
10812 | { | |
3a5c3e22 PA |
10813 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10814 | ||
10815 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10816 | bl->watchpoint_type); |
10817 | } | |
10818 | ||
10819 | /* Implement the "resources_needed" breakpoint_ops method for | |
10820 | masked hardware watchpoints. */ | |
10821 | ||
10822 | static int | |
10823 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10824 | { | |
3a5c3e22 PA |
10825 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10826 | ||
10827 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10828 | } |
10829 | ||
10830 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10831 | masked hardware watchpoints. */ | |
10832 | ||
10833 | static int | |
10834 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10835 | { | |
10836 | return 0; | |
10837 | } | |
10838 | ||
10839 | /* Implement the "print_it" breakpoint_ops method for | |
10840 | masked hardware watchpoints. */ | |
10841 | ||
10842 | static enum print_stop_action | |
10843 | print_it_masked_watchpoint (bpstat bs) | |
10844 | { | |
10845 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10846 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10847 | |
10848 | /* Masked watchpoints have only one location. */ | |
10849 | gdb_assert (b->loc && b->loc->next == NULL); | |
10850 | ||
10851 | switch (b->type) | |
10852 | { | |
10853 | case bp_hardware_watchpoint: | |
10854 | annotate_watchpoint (b->number); | |
10855 | if (ui_out_is_mi_like_p (uiout)) | |
10856 | ui_out_field_string | |
10857 | (uiout, "reason", | |
10858 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10859 | break; | |
10860 | ||
10861 | case bp_read_watchpoint: | |
10862 | if (ui_out_is_mi_like_p (uiout)) | |
10863 | ui_out_field_string | |
10864 | (uiout, "reason", | |
10865 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10866 | break; | |
10867 | ||
10868 | case bp_access_watchpoint: | |
10869 | if (ui_out_is_mi_like_p (uiout)) | |
10870 | ui_out_field_string | |
10871 | (uiout, "reason", | |
10872 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10873 | break; | |
10874 | default: | |
10875 | internal_error (__FILE__, __LINE__, | |
10876 | _("Invalid hardware watchpoint type.")); | |
10877 | } | |
10878 | ||
10879 | mention (b); | |
9c06b0b4 TJB |
10880 | ui_out_text (uiout, _("\n\ |
10881 | Check the underlying instruction at PC for the memory\n\ | |
10882 | address and value which triggered this watchpoint.\n")); | |
10883 | ui_out_text (uiout, "\n"); | |
10884 | ||
10885 | /* More than one watchpoint may have been triggered. */ | |
10886 | return PRINT_UNKNOWN; | |
10887 | } | |
10888 | ||
10889 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10890 | masked hardware watchpoints. */ | |
10891 | ||
10892 | static void | |
10893 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10894 | struct ui_out *uiout) | |
10895 | { | |
3a5c3e22 PA |
10896 | struct watchpoint *w = (struct watchpoint *) b; |
10897 | ||
9c06b0b4 TJB |
10898 | /* Masked watchpoints have only one location. */ |
10899 | gdb_assert (b->loc && b->loc->next == NULL); | |
10900 | ||
10901 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10902 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10903 | ui_out_text (uiout, "\n"); |
10904 | } | |
10905 | ||
10906 | /* Implement the "print_mention" breakpoint_ops method for | |
10907 | masked hardware watchpoints. */ | |
10908 | ||
10909 | static void | |
10910 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10911 | { | |
3a5c3e22 | 10912 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10913 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10914 | struct cleanup *ui_out_chain; |
10915 | ||
10916 | switch (b->type) | |
10917 | { | |
10918 | case bp_hardware_watchpoint: | |
10919 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10920 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10921 | break; | |
10922 | case bp_read_watchpoint: | |
10923 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10924 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10925 | break; | |
10926 | case bp_access_watchpoint: | |
10927 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10928 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10929 | break; | |
10930 | default: | |
10931 | internal_error (__FILE__, __LINE__, | |
10932 | _("Invalid hardware watchpoint type.")); | |
10933 | } | |
10934 | ||
10935 | ui_out_field_int (uiout, "number", b->number); | |
10936 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10937 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10938 | do_cleanups (ui_out_chain); |
10939 | } | |
10940 | ||
10941 | /* Implement the "print_recreate" breakpoint_ops method for | |
10942 | masked hardware watchpoints. */ | |
10943 | ||
10944 | static void | |
10945 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10946 | { | |
3a5c3e22 | 10947 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10948 | char tmp[40]; |
10949 | ||
10950 | switch (b->type) | |
10951 | { | |
10952 | case bp_hardware_watchpoint: | |
10953 | fprintf_unfiltered (fp, "watch"); | |
10954 | break; | |
10955 | case bp_read_watchpoint: | |
10956 | fprintf_unfiltered (fp, "rwatch"); | |
10957 | break; | |
10958 | case bp_access_watchpoint: | |
10959 | fprintf_unfiltered (fp, "awatch"); | |
10960 | break; | |
10961 | default: | |
10962 | internal_error (__FILE__, __LINE__, | |
10963 | _("Invalid hardware watchpoint type.")); | |
10964 | } | |
10965 | ||
3a5c3e22 PA |
10966 | sprintf_vma (tmp, w->hw_wp_mask); |
10967 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10968 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10969 | } |
10970 | ||
10971 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10972 | ||
2060206e | 10973 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10974 | |
10975 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10976 | ||
10977 | static int | |
10978 | is_masked_watchpoint (const struct breakpoint *b) | |
10979 | { | |
10980 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10981 | } | |
10982 | ||
53a5351d JM |
10983 | /* accessflag: hw_write: watch write, |
10984 | hw_read: watch read, | |
10985 | hw_access: watch access (read or write) */ | |
c906108c | 10986 | static void |
bbc13ae3 | 10987 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10988 | int just_location, int internal) |
c906108c | 10989 | { |
d983da9c | 10990 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10991 | struct expression *exp; |
270140bd | 10992 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10993 | struct value *val, *mark, *result; |
bb9d5f81 | 10994 | int saved_bitpos = 0, saved_bitsize = 0; |
c906108c | 10995 | struct frame_info *frame; |
bbc13ae3 KS |
10996 | const char *exp_start = NULL; |
10997 | const char *exp_end = NULL; | |
10998 | const char *tok, *end_tok; | |
9c06b0b4 | 10999 | int toklen = -1; |
bbc13ae3 KS |
11000 | const char *cond_start = NULL; |
11001 | const char *cond_end = NULL; | |
c906108c | 11002 | enum bptype bp_type; |
37e4754d | 11003 | int thread = -1; |
0cf6dd15 | 11004 | int pc = 0; |
9c06b0b4 TJB |
11005 | /* Flag to indicate whether we are going to use masks for |
11006 | the hardware watchpoint. */ | |
11007 | int use_mask = 0; | |
11008 | CORE_ADDR mask = 0; | |
3a5c3e22 | 11009 | struct watchpoint *w; |
bbc13ae3 KS |
11010 | char *expression; |
11011 | struct cleanup *back_to; | |
c906108c | 11012 | |
37e4754d LM |
11013 | /* Make sure that we actually have parameters to parse. */ |
11014 | if (arg != NULL && arg[0] != '\0') | |
11015 | { | |
bbc13ae3 KS |
11016 | const char *value_start; |
11017 | ||
11018 | exp_end = arg + strlen (arg); | |
37e4754d | 11019 | |
9c06b0b4 TJB |
11020 | /* Look for "parameter value" pairs at the end |
11021 | of the arguments string. */ | |
bbc13ae3 | 11022 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
11023 | { |
11024 | /* Skip whitespace at the end of the argument list. */ | |
11025 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11026 | tok--; | |
11027 | ||
11028 | /* Find the beginning of the last token. | |
11029 | This is the value of the parameter. */ | |
11030 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11031 | tok--; | |
11032 | value_start = tok + 1; | |
11033 | ||
11034 | /* Skip whitespace. */ | |
11035 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11036 | tok--; | |
11037 | ||
11038 | end_tok = tok; | |
11039 | ||
11040 | /* Find the beginning of the second to last token. | |
11041 | This is the parameter itself. */ | |
11042 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11043 | tok--; | |
11044 | tok++; | |
11045 | toklen = end_tok - tok + 1; | |
11046 | ||
61012eef | 11047 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 TJB |
11048 | { |
11049 | /* At this point we've found a "thread" token, which means | |
11050 | the user is trying to set a watchpoint that triggers | |
11051 | only in a specific thread. */ | |
11052 | char *endp; | |
37e4754d | 11053 | |
9c06b0b4 TJB |
11054 | if (thread != -1) |
11055 | error(_("You can specify only one thread.")); | |
37e4754d | 11056 | |
9c06b0b4 TJB |
11057 | /* Extract the thread ID from the next token. */ |
11058 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 11059 | |
9c06b0b4 TJB |
11060 | /* Check if the user provided a valid numeric value for the |
11061 | thread ID. */ | |
11062 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
11063 | error (_("Invalid thread ID specification %s."), value_start); | |
11064 | ||
11065 | /* Check if the thread actually exists. */ | |
11066 | if (!valid_thread_id (thread)) | |
af4908ba | 11067 | invalid_thread_id_error (thread); |
9c06b0b4 | 11068 | } |
61012eef | 11069 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
11070 | { |
11071 | /* We've found a "mask" token, which means the user wants to | |
11072 | create a hardware watchpoint that is going to have the mask | |
11073 | facility. */ | |
11074 | struct value *mask_value, *mark; | |
37e4754d | 11075 | |
9c06b0b4 TJB |
11076 | if (use_mask) |
11077 | error(_("You can specify only one mask.")); | |
37e4754d | 11078 | |
9c06b0b4 | 11079 | use_mask = just_location = 1; |
37e4754d | 11080 | |
9c06b0b4 TJB |
11081 | mark = value_mark (); |
11082 | mask_value = parse_to_comma_and_eval (&value_start); | |
11083 | mask = value_as_address (mask_value); | |
11084 | value_free_to_mark (mark); | |
11085 | } | |
11086 | else | |
11087 | /* We didn't recognize what we found. We should stop here. */ | |
11088 | break; | |
37e4754d | 11089 | |
9c06b0b4 TJB |
11090 | /* Truncate the string and get rid of the "parameter value" pair before |
11091 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 11092 | exp_end = tok; |
9c06b0b4 | 11093 | } |
37e4754d | 11094 | } |
bbc13ae3 KS |
11095 | else |
11096 | exp_end = arg; | |
37e4754d | 11097 | |
bbc13ae3 KS |
11098 | /* Parse the rest of the arguments. From here on out, everything |
11099 | is in terms of a newly allocated string instead of the original | |
11100 | ARG. */ | |
c906108c | 11101 | innermost_block = NULL; |
bbc13ae3 KS |
11102 | expression = savestring (arg, exp_end - arg); |
11103 | back_to = make_cleanup (xfree, expression); | |
11104 | exp_start = arg = expression; | |
1bb9788d | 11105 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 11106 | exp_end = arg; |
fa8a61dc TT |
11107 | /* Remove trailing whitespace from the expression before saving it. |
11108 | This makes the eventual display of the expression string a bit | |
11109 | prettier. */ | |
11110 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
11111 | --exp_end; | |
11112 | ||
65d79d4b SDJ |
11113 | /* Checking if the expression is not constant. */ |
11114 | if (watchpoint_exp_is_const (exp)) | |
11115 | { | |
11116 | int len; | |
11117 | ||
11118 | len = exp_end - exp_start; | |
11119 | while (len > 0 && isspace (exp_start[len - 1])) | |
11120 | len--; | |
11121 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
11122 | } | |
11123 | ||
c906108c SS |
11124 | exp_valid_block = innermost_block; |
11125 | mark = value_mark (); | |
3a1115a0 | 11126 | fetch_subexp_value (exp, &pc, &val, &result, NULL, just_location); |
06a64a0b | 11127 | |
bb9d5f81 PP |
11128 | if (val != NULL && just_location) |
11129 | { | |
11130 | saved_bitpos = value_bitpos (val); | |
11131 | saved_bitsize = value_bitsize (val); | |
11132 | } | |
11133 | ||
06a64a0b TT |
11134 | if (just_location) |
11135 | { | |
9c06b0b4 TJB |
11136 | int ret; |
11137 | ||
06a64a0b | 11138 | exp_valid_block = NULL; |
a1442452 | 11139 | val = value_addr (result); |
06a64a0b TT |
11140 | release_value (val); |
11141 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
11142 | |
11143 | if (use_mask) | |
11144 | { | |
11145 | ret = target_masked_watch_num_registers (value_as_address (val), | |
11146 | mask); | |
11147 | if (ret == -1) | |
11148 | error (_("This target does not support masked watchpoints.")); | |
11149 | else if (ret == -2) | |
11150 | error (_("Invalid mask or memory region.")); | |
11151 | } | |
06a64a0b TT |
11152 | } |
11153 | else if (val != NULL) | |
fa4727a6 | 11154 | release_value (val); |
c906108c | 11155 | |
bbc13ae3 KS |
11156 | tok = skip_spaces_const (arg); |
11157 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11158 | |
11159 | toklen = end_tok - tok; | |
11160 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11161 | { | |
2d134ed3 PA |
11162 | struct expression *cond; |
11163 | ||
60e1c644 | 11164 | innermost_block = NULL; |
c906108c | 11165 | tok = cond_start = end_tok + 1; |
1bb9788d | 11166 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11167 | |
11168 | /* The watchpoint expression may not be local, but the condition | |
11169 | may still be. E.g.: `watch global if local > 0'. */ | |
11170 | cond_exp_valid_block = innermost_block; | |
11171 | ||
2d134ed3 | 11172 | xfree (cond); |
c906108c SS |
11173 | cond_end = tok; |
11174 | } | |
11175 | if (*tok) | |
8a3fe4f8 | 11176 | error (_("Junk at end of command.")); |
c906108c | 11177 | |
d983da9c | 11178 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11179 | |
11180 | /* If the expression is "local", then set up a "watchpoint scope" | |
11181 | breakpoint at the point where we've left the scope of the watchpoint | |
11182 | expression. Create the scope breakpoint before the watchpoint, so | |
11183 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11184 | if (exp_valid_block && frame) |
d983da9c | 11185 | { |
edb3359d DJ |
11186 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11187 | { | |
11188 | scope_breakpoint | |
a6d9a66e UW |
11189 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11190 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11191 | bp_watchpoint_scope, |
11192 | &momentary_breakpoint_ops); | |
d983da9c | 11193 | |
edb3359d | 11194 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11195 | |
edb3359d DJ |
11196 | /* Automatically delete the breakpoint when it hits. */ |
11197 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11198 | |
edb3359d DJ |
11199 | /* Only break in the proper frame (help with recursion). */ |
11200 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11201 | |
edb3359d | 11202 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11203 | scope_breakpoint->loc->gdbarch |
11204 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11205 | scope_breakpoint->loc->requested_address |
11206 | = frame_unwind_caller_pc (frame); | |
11207 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11208 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11209 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11210 | scope_breakpoint->type); |
11211 | } | |
d983da9c DJ |
11212 | } |
11213 | ||
e8369a73 AB |
11214 | /* Now set up the breakpoint. We create all watchpoints as hardware |
11215 | watchpoints here even if hardware watchpoints are turned off, a call | |
11216 | to update_watchpoint later in this function will cause the type to | |
11217 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
11218 | ||
11219 | if (accessflag == hw_read) | |
11220 | bp_type = bp_read_watchpoint; | |
11221 | else if (accessflag == hw_access) | |
11222 | bp_type = bp_access_watchpoint; | |
11223 | else | |
11224 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 PA |
11225 | |
11226 | w = XCNEW (struct watchpoint); | |
11227 | b = &w->base; | |
348d480f | 11228 | if (use_mask) |
3a5c3e22 PA |
11229 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11230 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11231 | else |
3a5c3e22 PA |
11232 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11233 | &watchpoint_breakpoint_ops); | |
37e4754d | 11234 | b->thread = thread; |
b5de0fa7 | 11235 | b->disposition = disp_donttouch; |
348d480f | 11236 | b->pspace = current_program_space; |
3a5c3e22 PA |
11237 | w->exp = exp; |
11238 | w->exp_valid_block = exp_valid_block; | |
11239 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11240 | if (just_location) |
11241 | { | |
11242 | struct type *t = value_type (val); | |
11243 | CORE_ADDR addr = value_as_address (val); | |
11244 | char *name; | |
11245 | ||
11246 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11247 | name = type_to_string (t); | |
11248 | ||
3a5c3e22 | 11249 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11250 | core_addr_to_string (addr)); |
06a64a0b TT |
11251 | xfree (name); |
11252 | ||
3a5c3e22 | 11253 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11254 | (int) (exp_end - exp_start), exp_start); |
11255 | ||
06a64a0b TT |
11256 | /* The above expression is in C. */ |
11257 | b->language = language_c; | |
11258 | } | |
11259 | else | |
3a5c3e22 | 11260 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11261 | |
11262 | if (use_mask) | |
11263 | { | |
3a5c3e22 | 11264 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11265 | } |
11266 | else | |
11267 | { | |
3a5c3e22 | 11268 | w->val = val; |
bb9d5f81 PP |
11269 | w->val_bitpos = saved_bitpos; |
11270 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 11271 | w->val_valid = 1; |
9c06b0b4 | 11272 | } |
77b06cd7 | 11273 | |
c906108c SS |
11274 | if (cond_start) |
11275 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11276 | else | |
11277 | b->cond_string = 0; | |
c5aa993b | 11278 | |
c906108c | 11279 | if (frame) |
f6bc2008 | 11280 | { |
3a5c3e22 PA |
11281 | w->watchpoint_frame = get_frame_id (frame); |
11282 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11283 | } |
c906108c | 11284 | else |
f6bc2008 | 11285 | { |
3a5c3e22 PA |
11286 | w->watchpoint_frame = null_frame_id; |
11287 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11288 | } |
c906108c | 11289 | |
d983da9c | 11290 | if (scope_breakpoint != NULL) |
c906108c | 11291 | { |
d983da9c DJ |
11292 | /* The scope breakpoint is related to the watchpoint. We will |
11293 | need to act on them together. */ | |
11294 | b->related_breakpoint = scope_breakpoint; | |
11295 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11296 | } |
d983da9c | 11297 | |
06a64a0b TT |
11298 | if (!just_location) |
11299 | value_free_to_mark (mark); | |
2d134ed3 | 11300 | |
492d29ea | 11301 | TRY |
a9634178 TJB |
11302 | { |
11303 | /* Finally update the new watchpoint. This creates the locations | |
11304 | that should be inserted. */ | |
3a5c3e22 | 11305 | update_watchpoint (w, 1); |
a9634178 | 11306 | } |
492d29ea | 11307 | CATCH (e, RETURN_MASK_ALL) |
a9634178 TJB |
11308 | { |
11309 | delete_breakpoint (b); | |
11310 | throw_exception (e); | |
11311 | } | |
492d29ea | 11312 | END_CATCH |
a9634178 | 11313 | |
3ea46bff | 11314 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11315 | do_cleanups (back_to); |
c906108c SS |
11316 | } |
11317 | ||
e09342b5 | 11318 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11319 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11320 | |
c906108c | 11321 | static int |
a9634178 | 11322 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11323 | { |
11324 | int found_memory_cnt = 0; | |
2e70b7b9 | 11325 | struct value *head = v; |
c906108c SS |
11326 | |
11327 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11328 | if (!can_use_hw_watchpoints) |
c906108c | 11329 | return 0; |
c5aa993b | 11330 | |
5c44784c JM |
11331 | /* Make sure that the value of the expression depends only upon |
11332 | memory contents, and values computed from them within GDB. If we | |
11333 | find any register references or function calls, we can't use a | |
11334 | hardware watchpoint. | |
11335 | ||
11336 | The idea here is that evaluating an expression generates a series | |
11337 | of values, one holding the value of every subexpression. (The | |
11338 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11339 | a*b+c.) GDB's values hold almost enough information to establish | |
11340 | the criteria given above --- they identify memory lvalues, | |
11341 | register lvalues, computed values, etcetera. So we can evaluate | |
11342 | the expression, and then scan the chain of values that leaves | |
11343 | behind to decide whether we can detect any possible change to the | |
11344 | expression's final value using only hardware watchpoints. | |
11345 | ||
11346 | However, I don't think that the values returned by inferior | |
11347 | function calls are special in any way. So this function may not | |
11348 | notice that an expression involving an inferior function call | |
11349 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11350 | for (; v; v = value_next (v)) |
c906108c | 11351 | { |
5c44784c | 11352 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11353 | { |
8464be76 DJ |
11354 | if (v != head && value_lazy (v)) |
11355 | /* A lazy memory lvalue in the chain is one that GDB never | |
11356 | needed to fetch; we either just used its address (e.g., | |
11357 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11358 | in `a,b'). This doesn't apply to HEAD; if that is | |
11359 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11360 | ; |
53a5351d | 11361 | else |
5c44784c JM |
11362 | { |
11363 | /* Ahh, memory we actually used! Check if we can cover | |
11364 | it with hardware watchpoints. */ | |
df407dfe | 11365 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11366 | |
11367 | /* We only watch structs and arrays if user asked for it | |
11368 | explicitly, never if they just happen to appear in a | |
11369 | middle of some value chain. */ | |
11370 | if (v == head | |
11371 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11372 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11373 | { | |
42ae5230 | 11374 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11375 | int len; |
11376 | int num_regs; | |
11377 | ||
a9634178 | 11378 | len = (target_exact_watchpoints |
e09342b5 TJB |
11379 | && is_scalar_type_recursive (vtype))? |
11380 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11381 | |
e09342b5 TJB |
11382 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11383 | if (!num_regs) | |
2e70b7b9 MS |
11384 | return 0; |
11385 | else | |
e09342b5 | 11386 | found_memory_cnt += num_regs; |
2e70b7b9 | 11387 | } |
5c44784c | 11388 | } |
c5aa993b | 11389 | } |
5086187c AC |
11390 | else if (VALUE_LVAL (v) != not_lval |
11391 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11392 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11393 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11394 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11395 | } |
11396 | ||
11397 | /* The expression itself looks suitable for using a hardware | |
11398 | watchpoint, but give the target machine a chance to reject it. */ | |
11399 | return found_memory_cnt; | |
11400 | } | |
11401 | ||
8b93c638 | 11402 | void |
84f4c1fe | 11403 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11404 | { |
84f4c1fe | 11405 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11406 | } |
11407 | ||
06a64a0b TT |
11408 | /* A helper function that looks for the "-location" argument and then |
11409 | calls watch_command_1. */ | |
11410 | ||
11411 | static void | |
11412 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11413 | { | |
11414 | int just_location = 0; | |
11415 | ||
11416 | if (arg | |
11417 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11418 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11419 | { | |
e9cafbcc | 11420 | arg = skip_spaces (arg); |
06a64a0b TT |
11421 | just_location = 1; |
11422 | } | |
11423 | ||
84f4c1fe | 11424 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11425 | } |
8926118c | 11426 | |
c5aa993b | 11427 | static void |
fba45db2 | 11428 | watch_command (char *arg, int from_tty) |
c906108c | 11429 | { |
06a64a0b | 11430 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11431 | } |
11432 | ||
8b93c638 | 11433 | void |
84f4c1fe | 11434 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11435 | { |
84f4c1fe | 11436 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11437 | } |
8926118c | 11438 | |
c5aa993b | 11439 | static void |
fba45db2 | 11440 | rwatch_command (char *arg, int from_tty) |
c906108c | 11441 | { |
06a64a0b | 11442 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11443 | } |
11444 | ||
8b93c638 | 11445 | void |
84f4c1fe | 11446 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11447 | { |
84f4c1fe | 11448 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11449 | } |
8926118c | 11450 | |
c5aa993b | 11451 | static void |
fba45db2 | 11452 | awatch_command (char *arg, int from_tty) |
c906108c | 11453 | { |
06a64a0b | 11454 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11455 | } |
c906108c | 11456 | \f |
c5aa993b | 11457 | |
43ff13b4 | 11458 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11459 | because it uses the mechanisms of breakpoints. */ |
11460 | ||
bfec99b2 PA |
11461 | struct until_break_command_continuation_args |
11462 | { | |
11463 | struct breakpoint *breakpoint; | |
11464 | struct breakpoint *breakpoint2; | |
186c406b | 11465 | int thread_num; |
bfec99b2 PA |
11466 | }; |
11467 | ||
43ff13b4 | 11468 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11469 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11470 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11471 | command. */ |
c2c6d25f | 11472 | static void |
fa4cd53f | 11473 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11474 | { |
bfec99b2 PA |
11475 | struct until_break_command_continuation_args *a = arg; |
11476 | ||
11477 | delete_breakpoint (a->breakpoint); | |
11478 | if (a->breakpoint2) | |
11479 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11480 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11481 | } |
11482 | ||
c906108c | 11483 | void |
ae66c1fc | 11484 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11485 | { |
11486 | struct symtabs_and_lines sals; | |
11487 | struct symtab_and_line sal; | |
8556afb4 PA |
11488 | struct frame_info *frame; |
11489 | struct gdbarch *frame_gdbarch; | |
11490 | struct frame_id stack_frame_id; | |
11491 | struct frame_id caller_frame_id; | |
c906108c | 11492 | struct breakpoint *breakpoint; |
f107f563 | 11493 | struct breakpoint *breakpoint2 = NULL; |
f00aae0f | 11494 | struct cleanup *old_chain, *cleanup; |
186c406b TT |
11495 | int thread; |
11496 | struct thread_info *tp; | |
f00aae0f | 11497 | struct event_location *location; |
c906108c | 11498 | |
70509625 | 11499 | clear_proceed_status (0); |
c906108c SS |
11500 | |
11501 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11502 | this function. */ |
c5aa993b | 11503 | |
f00aae0f KS |
11504 | location = string_to_event_location (&arg, current_language); |
11505 | cleanup = make_cleanup_delete_event_location (location); | |
11506 | ||
1bfeeb0f | 11507 | if (last_displayed_sal_is_valid ()) |
f00aae0f | 11508 | sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11509 | get_last_displayed_symtab (), |
f8eba3c6 | 11510 | get_last_displayed_line ()); |
c906108c | 11511 | else |
f00aae0f | 11512 | sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE, |
f8eba3c6 | 11513 | (struct symtab *) NULL, 0); |
c5aa993b | 11514 | |
c906108c | 11515 | if (sals.nelts != 1) |
8a3fe4f8 | 11516 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11517 | |
c906108c | 11518 | sal = sals.sals[0]; |
4a64f543 | 11519 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11520 | |
c906108c | 11521 | if (*arg) |
8a3fe4f8 | 11522 | error (_("Junk at end of arguments.")); |
c5aa993b | 11523 | |
c906108c | 11524 | resolve_sal_pc (&sal); |
c5aa993b | 11525 | |
186c406b TT |
11526 | tp = inferior_thread (); |
11527 | thread = tp->num; | |
11528 | ||
883bc8d1 PA |
11529 | old_chain = make_cleanup (null_cleanup, NULL); |
11530 | ||
8556afb4 PA |
11531 | /* Note linespec handling above invalidates the frame chain. |
11532 | Installing a breakpoint also invalidates the frame chain (as it | |
11533 | may need to switch threads), so do any frame handling before | |
11534 | that. */ | |
11535 | ||
11536 | frame = get_selected_frame (NULL); | |
11537 | frame_gdbarch = get_frame_arch (frame); | |
11538 | stack_frame_id = get_stack_frame_id (frame); | |
11539 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11540 | |
ae66c1fc EZ |
11541 | /* Keep within the current frame, or in frames called by the current |
11542 | one. */ | |
edb3359d | 11543 | |
883bc8d1 | 11544 | if (frame_id_p (caller_frame_id)) |
c906108c | 11545 | { |
883bc8d1 PA |
11546 | struct symtab_and_line sal2; |
11547 | ||
11548 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11549 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11550 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11551 | sal2, |
11552 | caller_frame_id, | |
f107f563 VP |
11553 | bp_until); |
11554 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11555 | |
883bc8d1 | 11556 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11557 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11558 | } |
c5aa993b | 11559 | |
c70a6932 JK |
11560 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11561 | frame = NULL; | |
11562 | ||
883bc8d1 PA |
11563 | if (anywhere) |
11564 | /* If the user told us to continue until a specified location, | |
11565 | we don't specify a frame at which we need to stop. */ | |
11566 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11567 | null_frame_id, bp_until); | |
11568 | else | |
11569 | /* Otherwise, specify the selected frame, because we want to stop | |
11570 | only at the very same frame. */ | |
11571 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11572 | stack_frame_id, bp_until); | |
11573 | make_cleanup_delete_breakpoint (breakpoint); | |
11574 | ||
64ce06e4 | 11575 | proceed (-1, GDB_SIGNAL_DEFAULT); |
f107f563 | 11576 | |
4a64f543 MS |
11577 | /* If we are running asynchronously, and proceed call above has |
11578 | actually managed to start the target, arrange for breakpoints to | |
11579 | be deleted when the target stops. Otherwise, we're already | |
11580 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11581 | |
8ea051c5 | 11582 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11583 | { |
bfec99b2 PA |
11584 | struct until_break_command_continuation_args *args; |
11585 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11586 | |
bfec99b2 PA |
11587 | args->breakpoint = breakpoint; |
11588 | args->breakpoint2 = breakpoint2; | |
186c406b | 11589 | args->thread_num = thread; |
f107f563 VP |
11590 | |
11591 | discard_cleanups (old_chain); | |
95e54da7 PA |
11592 | add_continuation (inferior_thread (), |
11593 | until_break_command_continuation, args, | |
604ead4a | 11594 | xfree); |
f107f563 VP |
11595 | } |
11596 | else | |
c5aa993b | 11597 | do_cleanups (old_chain); |
f00aae0f KS |
11598 | |
11599 | do_cleanups (cleanup); | |
c906108c | 11600 | } |
ae66c1fc | 11601 | |
c906108c SS |
11602 | /* This function attempts to parse an optional "if <cond>" clause |
11603 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11604 | |
c906108c SS |
11605 | Else, it returns a pointer to the condition string. (It does not |
11606 | attempt to evaluate the string against a particular block.) And, | |
11607 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11608 | if clause in the arg string. */ |
53a5351d | 11609 | |
916703c0 | 11610 | char * |
fba45db2 | 11611 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11612 | { |
c5aa993b JM |
11613 | char *cond_string; |
11614 | ||
11615 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11616 | return NULL; |
c5aa993b | 11617 | |
4a64f543 | 11618 | /* Skip the "if" keyword. */ |
c906108c | 11619 | (*arg) += 2; |
c5aa993b | 11620 | |
c906108c | 11621 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11622 | condition string. */ |
e9cafbcc | 11623 | *arg = skip_spaces (*arg); |
c906108c | 11624 | cond_string = *arg; |
c5aa993b | 11625 | |
4a64f543 MS |
11626 | /* Assume that the condition occupies the remainder of the arg |
11627 | string. */ | |
c906108c | 11628 | (*arg) += strlen (cond_string); |
c5aa993b | 11629 | |
c906108c SS |
11630 | return cond_string; |
11631 | } | |
c5aa993b | 11632 | |
c906108c SS |
11633 | /* Commands to deal with catching events, such as signals, exceptions, |
11634 | process start/exit, etc. */ | |
c5aa993b JM |
11635 | |
11636 | typedef enum | |
11637 | { | |
44feb3ce TT |
11638 | catch_fork_temporary, catch_vfork_temporary, |
11639 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11640 | } |
11641 | catch_fork_kind; | |
11642 | ||
c906108c | 11643 | static void |
cc59ec59 MS |
11644 | catch_fork_command_1 (char *arg, int from_tty, |
11645 | struct cmd_list_element *command) | |
c906108c | 11646 | { |
a6d9a66e | 11647 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11648 | char *cond_string = NULL; |
44feb3ce TT |
11649 | catch_fork_kind fork_kind; |
11650 | int tempflag; | |
11651 | ||
11652 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11653 | tempflag = (fork_kind == catch_fork_temporary | |
11654 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11655 | |
44feb3ce TT |
11656 | if (!arg) |
11657 | arg = ""; | |
e9cafbcc | 11658 | arg = skip_spaces (arg); |
c5aa993b | 11659 | |
c906108c | 11660 | /* The allowed syntax is: |
c5aa993b JM |
11661 | catch [v]fork |
11662 | catch [v]fork if <cond> | |
11663 | ||
4a64f543 | 11664 | First, check if there's an if clause. */ |
c906108c | 11665 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11666 | |
c906108c | 11667 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11668 | error (_("Junk at end of arguments.")); |
c5aa993b | 11669 | |
c906108c | 11670 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11671 | and enable reporting of such events. */ |
c5aa993b JM |
11672 | switch (fork_kind) |
11673 | { | |
44feb3ce TT |
11674 | case catch_fork_temporary: |
11675 | case catch_fork_permanent: | |
a6d9a66e | 11676 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11677 | &catch_fork_breakpoint_ops); |
c906108c | 11678 | break; |
44feb3ce TT |
11679 | case catch_vfork_temporary: |
11680 | case catch_vfork_permanent: | |
a6d9a66e | 11681 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11682 | &catch_vfork_breakpoint_ops); |
c906108c | 11683 | break; |
c5aa993b | 11684 | default: |
8a3fe4f8 | 11685 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11686 | break; |
c5aa993b | 11687 | } |
c906108c SS |
11688 | } |
11689 | ||
11690 | static void | |
cc59ec59 MS |
11691 | catch_exec_command_1 (char *arg, int from_tty, |
11692 | struct cmd_list_element *command) | |
c906108c | 11693 | { |
b4d90040 | 11694 | struct exec_catchpoint *c; |
a6d9a66e | 11695 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11696 | int tempflag; |
c5aa993b | 11697 | char *cond_string = NULL; |
c906108c | 11698 | |
44feb3ce TT |
11699 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11700 | ||
11701 | if (!arg) | |
11702 | arg = ""; | |
e9cafbcc | 11703 | arg = skip_spaces (arg); |
c906108c SS |
11704 | |
11705 | /* The allowed syntax is: | |
c5aa993b JM |
11706 | catch exec |
11707 | catch exec if <cond> | |
c906108c | 11708 | |
4a64f543 | 11709 | First, check if there's an if clause. */ |
c906108c SS |
11710 | cond_string = ep_parse_optional_if_clause (&arg); |
11711 | ||
11712 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11713 | error (_("Junk at end of arguments.")); |
c906108c | 11714 | |
b4d90040 PA |
11715 | c = XNEW (struct exec_catchpoint); |
11716 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11717 | &catch_exec_breakpoint_ops); | |
11718 | c->exec_pathname = NULL; | |
11719 | ||
3ea46bff | 11720 | install_breakpoint (0, &c->base, 1); |
c906108c | 11721 | } |
c5aa993b | 11722 | |
9ac4176b | 11723 | void |
28010a5d PA |
11724 | init_ada_exception_breakpoint (struct breakpoint *b, |
11725 | struct gdbarch *gdbarch, | |
11726 | struct symtab_and_line sal, | |
11727 | char *addr_string, | |
c0a91b2b | 11728 | const struct breakpoint_ops *ops, |
28010a5d | 11729 | int tempflag, |
349774ef | 11730 | int enabled, |
28010a5d | 11731 | int from_tty) |
f7f9143b | 11732 | { |
f7f9143b JB |
11733 | if (from_tty) |
11734 | { | |
5af949e3 UW |
11735 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11736 | if (!loc_gdbarch) | |
11737 | loc_gdbarch = gdbarch; | |
11738 | ||
6c95b8df PA |
11739 | describe_other_breakpoints (loc_gdbarch, |
11740 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11741 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11742 | version for exception catchpoints, because two catchpoints | |
11743 | used for different exception names will use the same address. | |
11744 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11745 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11746 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11747 | the user what type of catchpoint it is. The above is good |
11748 | enough for now, though. */ | |
11749 | } | |
11750 | ||
28010a5d | 11751 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11752 | |
349774ef | 11753 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11754 | b->disposition = tempflag ? disp_del : disp_donttouch; |
f00aae0f KS |
11755 | b->location = string_to_event_location (&addr_string, |
11756 | language_def (language_ada)); | |
f7f9143b | 11757 | b->language = language_ada; |
f7f9143b JB |
11758 | } |
11759 | ||
c906108c | 11760 | static void |
fba45db2 | 11761 | catch_command (char *arg, int from_tty) |
c906108c | 11762 | { |
44feb3ce | 11763 | error (_("Catch requires an event name.")); |
c906108c SS |
11764 | } |
11765 | \f | |
11766 | ||
11767 | static void | |
fba45db2 | 11768 | tcatch_command (char *arg, int from_tty) |
c906108c | 11769 | { |
44feb3ce | 11770 | error (_("Catch requires an event name.")); |
c906108c SS |
11771 | } |
11772 | ||
8a2c437b TT |
11773 | /* A qsort comparison function that sorts breakpoints in order. */ |
11774 | ||
11775 | static int | |
11776 | compare_breakpoints (const void *a, const void *b) | |
11777 | { | |
11778 | const breakpoint_p *ba = a; | |
11779 | uintptr_t ua = (uintptr_t) *ba; | |
11780 | const breakpoint_p *bb = b; | |
11781 | uintptr_t ub = (uintptr_t) *bb; | |
11782 | ||
11783 | if ((*ba)->number < (*bb)->number) | |
11784 | return -1; | |
11785 | else if ((*ba)->number > (*bb)->number) | |
11786 | return 1; | |
11787 | ||
11788 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11789 | the number 0. */ | |
11790 | if (ua < ub) | |
11791 | return -1; | |
94b0e70d | 11792 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11793 | } |
11794 | ||
80f8a6eb | 11795 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11796 | |
11797 | static void | |
fba45db2 | 11798 | clear_command (char *arg, int from_tty) |
c906108c | 11799 | { |
8a2c437b | 11800 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11801 | VEC(breakpoint_p) *found = 0; |
11802 | int ix; | |
c906108c SS |
11803 | int default_match; |
11804 | struct symtabs_and_lines sals; | |
11805 | struct symtab_and_line sal; | |
c906108c | 11806 | int i; |
8a2c437b | 11807 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11808 | |
11809 | if (arg) | |
11810 | { | |
39cf75f7 DE |
11811 | sals = decode_line_with_current_source (arg, |
11812 | (DECODE_LINE_FUNFIRSTLINE | |
11813 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11814 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11815 | default_match = 0; |
11816 | } | |
11817 | else | |
11818 | { | |
c5aa993b | 11819 | sals.sals = (struct symtab_and_line *) |
c906108c | 11820 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11821 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11822 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11823 | |
11824 | /* Set sal's line, symtab, pc, and pspace to the values | |
11825 | corresponding to the last call to print_frame_info. If the | |
11826 | codepoint is not valid, this will set all the fields to 0. */ | |
11827 | get_last_displayed_sal (&sal); | |
c906108c | 11828 | if (sal.symtab == 0) |
8a3fe4f8 | 11829 | error (_("No source file specified.")); |
c906108c SS |
11830 | |
11831 | sals.sals[0] = sal; | |
11832 | sals.nelts = 1; | |
11833 | ||
11834 | default_match = 1; | |
11835 | } | |
11836 | ||
4a64f543 MS |
11837 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11838 | seems, because all existing breakpoints typically have both | |
11839 | file/line and pc set. So, if clear is given file/line, we can | |
11840 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11841 | |
11842 | We only support clearing given the address explicitly | |
11843 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11844 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11845 | due to optimization, all in one block. |
4a64f543 MS |
11846 | |
11847 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11848 | PC corresponding to the same file:line, the breakpoint won't |
11849 | be cleared. We probably can still clear the breakpoint, but | |
11850 | since the other PC value is never presented to user, user | |
11851 | can only find it by guessing, and it does not seem important | |
11852 | to support that. */ | |
11853 | ||
4a64f543 MS |
11854 | /* For each line spec given, delete bps which correspond to it. Do |
11855 | it in two passes, solely to preserve the current behavior that | |
11856 | from_tty is forced true if we delete more than one | |
11857 | breakpoint. */ | |
c906108c | 11858 | |
80f8a6eb | 11859 | found = NULL; |
8a2c437b | 11860 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11861 | for (i = 0; i < sals.nelts; i++) |
11862 | { | |
05cba821 JK |
11863 | const char *sal_fullname; |
11864 | ||
c906108c | 11865 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11866 | If line given (pc == 0), clear all bpts on specified line. |
11867 | If defaulting, clear all bpts on default line | |
c906108c | 11868 | or at default pc. |
c5aa993b JM |
11869 | |
11870 | defaulting sal.pc != 0 tests to do | |
11871 | ||
11872 | 0 1 pc | |
11873 | 1 1 pc _and_ line | |
11874 | 0 0 line | |
11875 | 1 0 <can't happen> */ | |
c906108c SS |
11876 | |
11877 | sal = sals.sals[i]; | |
05cba821 JK |
11878 | sal_fullname = (sal.symtab == NULL |
11879 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11880 | |
4a64f543 | 11881 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11882 | ALL_BREAKPOINTS (b) |
c5aa993b | 11883 | { |
0d381245 | 11884 | int match = 0; |
4a64f543 | 11885 | /* Are we going to delete b? */ |
cc60f2e3 | 11886 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11887 | { |
11888 | struct bp_location *loc = b->loc; | |
11889 | for (; loc; loc = loc->next) | |
11890 | { | |
f8eba3c6 TT |
11891 | /* If the user specified file:line, don't allow a PC |
11892 | match. This matches historical gdb behavior. */ | |
11893 | int pc_match = (!sal.explicit_line | |
11894 | && sal.pc | |
11895 | && (loc->pspace == sal.pspace) | |
11896 | && (loc->address == sal.pc) | |
11897 | && (!section_is_overlay (loc->section) | |
11898 | || loc->section == sal.section)); | |
4aac40c8 TT |
11899 | int line_match = 0; |
11900 | ||
11901 | if ((default_match || sal.explicit_line) | |
2f202fde | 11902 | && loc->symtab != NULL |
05cba821 | 11903 | && sal_fullname != NULL |
4aac40c8 | 11904 | && sal.pspace == loc->pspace |
05cba821 JK |
11905 | && loc->line_number == sal.line |
11906 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11907 | sal_fullname) == 0) | |
11908 | line_match = 1; | |
4aac40c8 | 11909 | |
0d381245 VP |
11910 | if (pc_match || line_match) |
11911 | { | |
11912 | match = 1; | |
11913 | break; | |
11914 | } | |
11915 | } | |
11916 | } | |
11917 | ||
11918 | if (match) | |
d6e956e5 | 11919 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11920 | } |
80f8a6eb | 11921 | } |
8a2c437b | 11922 | |
80f8a6eb | 11923 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11924 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11925 | { |
11926 | if (arg) | |
8a3fe4f8 | 11927 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11928 | else |
8a3fe4f8 | 11929 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11930 | } |
c906108c | 11931 | |
8a2c437b TT |
11932 | /* Remove duplicates from the vec. */ |
11933 | qsort (VEC_address (breakpoint_p, found), | |
11934 | VEC_length (breakpoint_p, found), | |
11935 | sizeof (breakpoint_p), | |
11936 | compare_breakpoints); | |
11937 | prev = VEC_index (breakpoint_p, found, 0); | |
11938 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11939 | { | |
11940 | if (b == prev) | |
11941 | { | |
11942 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11943 | --ix; | |
11944 | } | |
11945 | } | |
11946 | ||
d6e956e5 | 11947 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11948 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11949 | if (from_tty) |
a3f17187 | 11950 | { |
d6e956e5 | 11951 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11952 | printf_unfiltered (_("Deleted breakpoint ")); |
11953 | else | |
11954 | printf_unfiltered (_("Deleted breakpoints ")); | |
11955 | } | |
d6e956e5 VP |
11956 | |
11957 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11958 | { |
c5aa993b | 11959 | if (from_tty) |
d6e956e5 VP |
11960 | printf_unfiltered ("%d ", b->number); |
11961 | delete_breakpoint (b); | |
c906108c | 11962 | } |
80f8a6eb MS |
11963 | if (from_tty) |
11964 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11965 | |
11966 | do_cleanups (cleanups); | |
c906108c SS |
11967 | } |
11968 | \f | |
11969 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11970 | all breakpoints that are marked for deletion, whether hit or not. | |
11971 | This is called after any breakpoint is hit, or after errors. */ | |
11972 | ||
11973 | void | |
fba45db2 | 11974 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11975 | { |
35df4500 | 11976 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11977 | |
11978 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11979 | if (bs->breakpoint_at |
11980 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11981 | && bs->stop) |
f431efe5 | 11982 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11983 | |
35df4500 | 11984 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11985 | { |
b5de0fa7 | 11986 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11987 | delete_breakpoint (b); |
11988 | } | |
c906108c SS |
11989 | } |
11990 | ||
4a64f543 MS |
11991 | /* A comparison function for bp_location AP and BP being interfaced to |
11992 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11993 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11994 | secondarily by ordering first permanent elements and |
4a64f543 | 11995 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11996 | qsort being an unstable algorithm. */ |
876fa593 JK |
11997 | |
11998 | static int | |
494cfb0f | 11999 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 12000 | { |
494cfb0f JK |
12001 | struct bp_location *a = *(void **) ap; |
12002 | struct bp_location *b = *(void **) bp; | |
876fa593 JK |
12003 | |
12004 | if (a->address != b->address) | |
12005 | return (a->address > b->address) - (a->address < b->address); | |
12006 | ||
dea2aa5f LM |
12007 | /* Sort locations at the same address by their pspace number, keeping |
12008 | locations of the same inferior (in a multi-inferior environment) | |
12009 | grouped. */ | |
12010 | ||
12011 | if (a->pspace->num != b->pspace->num) | |
12012 | return ((a->pspace->num > b->pspace->num) | |
12013 | - (a->pspace->num < b->pspace->num)); | |
12014 | ||
876fa593 | 12015 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
12016 | if (a->permanent != b->permanent) |
12017 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 12018 | |
c56a97f9 JK |
12019 | /* Make the internal GDB representation stable across GDB runs |
12020 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12021 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12022 | |
12023 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12024 | return ((a->owner->number > b->owner->number) |
12025 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12026 | |
12027 | return (a > b) - (a < b); | |
12028 | } | |
12029 | ||
876fa593 | 12030 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12031 | bp_location_shadow_len_after_address_max according to the current |
12032 | content of the bp_location array. */ | |
f7545552 TT |
12033 | |
12034 | static void | |
876fa593 | 12035 | bp_location_target_extensions_update (void) |
f7545552 | 12036 | { |
876fa593 JK |
12037 | struct bp_location *bl, **blp_tmp; |
12038 | ||
12039 | bp_location_placed_address_before_address_max = 0; | |
12040 | bp_location_shadow_len_after_address_max = 0; | |
12041 | ||
12042 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12043 | { | |
12044 | CORE_ADDR start, end, addr; | |
12045 | ||
12046 | if (!bp_location_has_shadow (bl)) | |
12047 | continue; | |
12048 | ||
12049 | start = bl->target_info.placed_address; | |
12050 | end = start + bl->target_info.shadow_len; | |
12051 | ||
12052 | gdb_assert (bl->address >= start); | |
12053 | addr = bl->address - start; | |
12054 | if (addr > bp_location_placed_address_before_address_max) | |
12055 | bp_location_placed_address_before_address_max = addr; | |
12056 | ||
12057 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12058 | ||
12059 | gdb_assert (bl->address < end); | |
12060 | addr = end - bl->address; | |
12061 | if (addr > bp_location_shadow_len_after_address_max) | |
12062 | bp_location_shadow_len_after_address_max = addr; | |
12063 | } | |
f7545552 TT |
12064 | } |
12065 | ||
1e4d1764 YQ |
12066 | /* Download tracepoint locations if they haven't been. */ |
12067 | ||
12068 | static void | |
12069 | download_tracepoint_locations (void) | |
12070 | { | |
7ed2c994 | 12071 | struct breakpoint *b; |
1e4d1764 YQ |
12072 | struct cleanup *old_chain; |
12073 | ||
12074 | if (!target_can_download_tracepoint ()) | |
12075 | return; | |
12076 | ||
12077 | old_chain = save_current_space_and_thread (); | |
12078 | ||
7ed2c994 | 12079 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12080 | { |
7ed2c994 | 12081 | struct bp_location *bl; |
1e4d1764 | 12082 | struct tracepoint *t; |
f2a8bc8a | 12083 | int bp_location_downloaded = 0; |
1e4d1764 | 12084 | |
7ed2c994 | 12085 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12086 | ? !may_insert_fast_tracepoints |
12087 | : !may_insert_tracepoints)) | |
12088 | continue; | |
12089 | ||
7ed2c994 YQ |
12090 | for (bl = b->loc; bl; bl = bl->next) |
12091 | { | |
12092 | /* In tracepoint, locations are _never_ duplicated, so | |
12093 | should_be_inserted is equivalent to | |
12094 | unduplicated_should_be_inserted. */ | |
12095 | if (!should_be_inserted (bl) || bl->inserted) | |
12096 | continue; | |
1e4d1764 | 12097 | |
7ed2c994 | 12098 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12099 | |
7ed2c994 | 12100 | target_download_tracepoint (bl); |
1e4d1764 | 12101 | |
7ed2c994 | 12102 | bl->inserted = 1; |
f2a8bc8a | 12103 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12104 | } |
12105 | t = (struct tracepoint *) b; | |
12106 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12107 | if (bp_location_downloaded) |
12108 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12109 | } |
12110 | ||
12111 | do_cleanups (old_chain); | |
12112 | } | |
12113 | ||
934709f0 PW |
12114 | /* Swap the insertion/duplication state between two locations. */ |
12115 | ||
12116 | static void | |
12117 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12118 | { | |
12119 | const int left_inserted = left->inserted; | |
12120 | const int left_duplicate = left->duplicate; | |
b775012e | 12121 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12122 | const struct bp_target_info left_target_info = left->target_info; |
12123 | ||
1e4d1764 YQ |
12124 | /* Locations of tracepoints can never be duplicated. */ |
12125 | if (is_tracepoint (left->owner)) | |
12126 | gdb_assert (!left->duplicate); | |
12127 | if (is_tracepoint (right->owner)) | |
12128 | gdb_assert (!right->duplicate); | |
12129 | ||
934709f0 PW |
12130 | left->inserted = right->inserted; |
12131 | left->duplicate = right->duplicate; | |
b775012e | 12132 | left->needs_update = right->needs_update; |
934709f0 PW |
12133 | left->target_info = right->target_info; |
12134 | right->inserted = left_inserted; | |
12135 | right->duplicate = left_duplicate; | |
b775012e | 12136 | right->needs_update = left_needs_update; |
934709f0 PW |
12137 | right->target_info = left_target_info; |
12138 | } | |
12139 | ||
b775012e LM |
12140 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12141 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12142 | conditions on the target's side. Such conditions need to be updated on | |
12143 | the target. */ | |
12144 | ||
12145 | static void | |
12146 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12147 | { | |
12148 | struct bp_location **locp = NULL, **loc2p; | |
12149 | struct bp_location *loc; | |
12150 | CORE_ADDR address = 0; | |
12151 | int pspace_num; | |
12152 | ||
12153 | address = bl->address; | |
12154 | pspace_num = bl->pspace->num; | |
12155 | ||
12156 | /* This is only meaningful if the target is | |
12157 | evaluating conditions and if the user has | |
12158 | opted for condition evaluation on the target's | |
12159 | side. */ | |
12160 | if (gdb_evaluates_breakpoint_condition_p () | |
12161 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12162 | return; | |
12163 | ||
12164 | /* Flag all breakpoint locations with this address and | |
12165 | the same program space as the location | |
12166 | as "its condition has changed". We need to | |
12167 | update the conditions on the target's side. */ | |
12168 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12169 | { | |
12170 | loc = *loc2p; | |
12171 | ||
12172 | if (!is_breakpoint (loc->owner) | |
12173 | || pspace_num != loc->pspace->num) | |
12174 | continue; | |
12175 | ||
12176 | /* Flag the location appropriately. We use a different state to | |
12177 | let everyone know that we already updated the set of locations | |
12178 | with addr bl->address and program space bl->pspace. This is so | |
12179 | we don't have to keep calling these functions just to mark locations | |
12180 | that have already been marked. */ | |
12181 | loc->condition_changed = condition_updated; | |
12182 | ||
12183 | /* Free the agent expression bytecode as well. We will compute | |
12184 | it later on. */ | |
12185 | if (loc->cond_bytecode) | |
12186 | { | |
12187 | free_agent_expr (loc->cond_bytecode); | |
12188 | loc->cond_bytecode = NULL; | |
12189 | } | |
12190 | } | |
12191 | } | |
44702360 PA |
12192 | /* Called whether new breakpoints are created, or existing breakpoints |
12193 | deleted, to update the global location list and recompute which | |
12194 | locations are duplicate of which. | |
b775012e | 12195 | |
04086b45 PA |
12196 | The INSERT_MODE flag determines whether locations may not, may, or |
12197 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
12198 | info. */ | |
b60e7edf | 12199 | |
0d381245 | 12200 | static void |
44702360 | 12201 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 12202 | { |
74960c60 | 12203 | struct breakpoint *b; |
876fa593 | 12204 | struct bp_location **locp, *loc; |
f7545552 | 12205 | struct cleanup *cleanups; |
b775012e LM |
12206 | /* Last breakpoint location address that was marked for update. */ |
12207 | CORE_ADDR last_addr = 0; | |
12208 | /* Last breakpoint location program space that was marked for update. */ | |
12209 | int last_pspace_num = -1; | |
f7545552 | 12210 | |
2d134ed3 PA |
12211 | /* Used in the duplicates detection below. When iterating over all |
12212 | bp_locations, points to the first bp_location of a given address. | |
12213 | Breakpoints and watchpoints of different types are never | |
12214 | duplicates of each other. Keep one pointer for each type of | |
12215 | breakpoint/watchpoint, so we only need to loop over all locations | |
12216 | once. */ | |
12217 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12218 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12219 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12220 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12221 | |
4a64f543 MS |
12222 | /* Saved former bp_location array which we compare against the newly |
12223 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12224 | struct bp_location **old_location, **old_locp; |
12225 | unsigned old_location_count; | |
12226 | ||
12227 | old_location = bp_location; | |
12228 | old_location_count = bp_location_count; | |
12229 | bp_location = NULL; | |
12230 | bp_location_count = 0; | |
12231 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12232 | |
74960c60 | 12233 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12234 | for (loc = b->loc; loc; loc = loc->next) |
12235 | bp_location_count++; | |
12236 | ||
12237 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12238 | locp = bp_location; | |
12239 | ALL_BREAKPOINTS (b) | |
12240 | for (loc = b->loc; loc; loc = loc->next) | |
12241 | *locp++ = loc; | |
12242 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12243 | bp_location_compare); |
876fa593 JK |
12244 | |
12245 | bp_location_target_extensions_update (); | |
74960c60 | 12246 | |
4a64f543 MS |
12247 | /* Identify bp_location instances that are no longer present in the |
12248 | new list, and therefore should be freed. Note that it's not | |
12249 | necessary that those locations should be removed from inferior -- | |
12250 | if there's another location at the same address (previously | |
12251 | marked as duplicate), we don't need to remove/insert the | |
12252 | location. | |
876fa593 | 12253 | |
4a64f543 MS |
12254 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12255 | and former bp_location array state respectively. */ | |
876fa593 JK |
12256 | |
12257 | locp = bp_location; | |
12258 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12259 | old_locp++) | |
74960c60 | 12260 | { |
876fa593 | 12261 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12262 | struct bp_location **loc2p; |
876fa593 | 12263 | |
e5dd4106 | 12264 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12265 | not, we have to free it. */ |
c7d46a38 | 12266 | int found_object = 0; |
20874c92 VP |
12267 | /* Tells if the location should remain inserted in the target. */ |
12268 | int keep_in_target = 0; | |
12269 | int removed = 0; | |
876fa593 | 12270 | |
4a64f543 MS |
12271 | /* Skip LOCP entries which will definitely never be needed. |
12272 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12273 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12274 | && (*locp)->address < old_loc->address) |
876fa593 | 12275 | locp++; |
c7d46a38 PA |
12276 | |
12277 | for (loc2p = locp; | |
12278 | (loc2p < bp_location + bp_location_count | |
12279 | && (*loc2p)->address == old_loc->address); | |
12280 | loc2p++) | |
12281 | { | |
b775012e LM |
12282 | /* Check if this is a new/duplicated location or a duplicated |
12283 | location that had its condition modified. If so, we want to send | |
12284 | its condition to the target if evaluation of conditions is taking | |
12285 | place there. */ | |
12286 | if ((*loc2p)->condition_changed == condition_modified | |
12287 | && (last_addr != old_loc->address | |
12288 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12289 | { |
b775012e LM |
12290 | force_breakpoint_reinsertion (*loc2p); |
12291 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12292 | } |
b775012e LM |
12293 | |
12294 | if (*loc2p == old_loc) | |
12295 | found_object = 1; | |
c7d46a38 | 12296 | } |
74960c60 | 12297 | |
b775012e LM |
12298 | /* We have already handled this address, update it so that we don't |
12299 | have to go through updates again. */ | |
12300 | last_addr = old_loc->address; | |
12301 | ||
12302 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12303 | if (!found_object) | |
12304 | force_breakpoint_reinsertion (old_loc); | |
12305 | ||
4a64f543 MS |
12306 | /* If this location is no longer present, and inserted, look if |
12307 | there's maybe a new location at the same address. If so, | |
12308 | mark that one inserted, and don't remove this one. This is | |
12309 | needed so that we don't have a time window where a breakpoint | |
12310 | at certain location is not inserted. */ | |
74960c60 | 12311 | |
876fa593 | 12312 | if (old_loc->inserted) |
0d381245 | 12313 | { |
4a64f543 MS |
12314 | /* If the location is inserted now, we might have to remove |
12315 | it. */ | |
74960c60 | 12316 | |
876fa593 | 12317 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12318 | { |
4a64f543 MS |
12319 | /* The location is still present in the location list, |
12320 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12321 | keep_in_target = 1; |
74960c60 VP |
12322 | } |
12323 | else | |
12324 | { | |
b775012e LM |
12325 | /* This location still exists, but it won't be kept in the |
12326 | target since it may have been disabled. We proceed to | |
12327 | remove its target-side condition. */ | |
12328 | ||
4a64f543 MS |
12329 | /* The location is either no longer present, or got |
12330 | disabled. See if there's another location at the | |
12331 | same address, in which case we don't need to remove | |
12332 | this one from the target. */ | |
876fa593 | 12333 | |
2bdf28a0 | 12334 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12335 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12336 | { | |
876fa593 | 12337 | for (loc2p = locp; |
c7d46a38 PA |
12338 | (loc2p < bp_location + bp_location_count |
12339 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12340 | loc2p++) |
12341 | { | |
12342 | struct bp_location *loc2 = *loc2p; | |
12343 | ||
2d134ed3 | 12344 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12345 | { |
85d721b8 PA |
12346 | /* Read watchpoint locations are switched to |
12347 | access watchpoints, if the former are not | |
12348 | supported, but the latter are. */ | |
12349 | if (is_hardware_watchpoint (old_loc->owner)) | |
12350 | { | |
12351 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12352 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12353 | } | |
12354 | ||
934709f0 PW |
12355 | /* loc2 is a duplicated location. We need to check |
12356 | if it should be inserted in case it will be | |
12357 | unduplicated. */ | |
12358 | if (loc2 != old_loc | |
12359 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12360 | { |
934709f0 | 12361 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12362 | keep_in_target = 1; |
12363 | break; | |
12364 | } | |
876fa593 JK |
12365 | } |
12366 | } | |
12367 | } | |
74960c60 VP |
12368 | } |
12369 | ||
20874c92 VP |
12370 | if (!keep_in_target) |
12371 | { | |
876fa593 | 12372 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12373 | { |
4a64f543 MS |
12374 | /* This is just about all we can do. We could keep |
12375 | this location on the global list, and try to | |
12376 | remove it next time, but there's no particular | |
12377 | reason why we will succeed next time. | |
20874c92 | 12378 | |
4a64f543 MS |
12379 | Note that at this point, old_loc->owner is still |
12380 | valid, as delete_breakpoint frees the breakpoint | |
12381 | only after calling us. */ | |
3e43a32a MS |
12382 | printf_filtered (_("warning: Error removing " |
12383 | "breakpoint %d\n"), | |
876fa593 | 12384 | old_loc->owner->number); |
20874c92 VP |
12385 | } |
12386 | removed = 1; | |
12387 | } | |
0d381245 | 12388 | } |
74960c60 VP |
12389 | |
12390 | if (!found_object) | |
1c5cfe86 | 12391 | { |
fbea99ea | 12392 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12393 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12394 | { |
db82e815 PA |
12395 | /* This location was removed from the target. In |
12396 | non-stop mode, a race condition is possible where | |
12397 | we've removed a breakpoint, but stop events for that | |
12398 | breakpoint are already queued and will arrive later. | |
12399 | We apply an heuristic to be able to distinguish such | |
12400 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12401 | breakpoint location for a bit, and will retire it | |
12402 | after we see some number of events. The theory here | |
12403 | is that reporting of events should, "on the average", | |
12404 | be fair, so after a while we'll see events from all | |
12405 | threads that have anything of interest, and no longer | |
12406 | need to keep this breakpoint location around. We | |
12407 | don't hold locations forever so to reduce chances of | |
12408 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12409 | SIGTRAP. | |
12410 | ||
12411 | The heuristic failing can be disastrous on | |
12412 | decr_pc_after_break targets. | |
12413 | ||
12414 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12415 | if we fail to recognize a late breakpoint SIGTRAP, | |
12416 | because events_till_retirement has reached 0 too | |
12417 | soon, we'll fail to do the PC adjustment, and report | |
12418 | a random SIGTRAP to the user. When the user resumes | |
12419 | the inferior, it will most likely immediately crash | |
2dec564e | 12420 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12421 | corrupted, because of being resumed e.g., in the |
12422 | middle of a multi-byte instruction, or skipped a | |
12423 | one-byte instruction. This was actually seen happen | |
12424 | on native x86-linux, and should be less rare on | |
12425 | targets that do not support new thread events, like | |
12426 | remote, due to the heuristic depending on | |
12427 | thread_count. | |
12428 | ||
12429 | Mistaking a random SIGTRAP for a breakpoint trap | |
12430 | causes similar symptoms (PC adjustment applied when | |
12431 | it shouldn't), but then again, playing with SIGTRAPs | |
12432 | behind the debugger's back is asking for trouble. | |
12433 | ||
12434 | Since hardware watchpoint traps are always | |
12435 | distinguishable from other traps, so we don't need to | |
12436 | apply keep hardware watchpoint moribund locations | |
12437 | around. We simply always ignore hardware watchpoint | |
12438 | traps we can no longer explain. */ | |
12439 | ||
876fa593 JK |
12440 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12441 | old_loc->owner = NULL; | |
20874c92 | 12442 | |
876fa593 | 12443 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12444 | } |
12445 | else | |
f431efe5 PA |
12446 | { |
12447 | old_loc->owner = NULL; | |
12448 | decref_bp_location (&old_loc); | |
12449 | } | |
20874c92 | 12450 | } |
74960c60 | 12451 | } |
1c5cfe86 | 12452 | |
348d480f PA |
12453 | /* Rescan breakpoints at the same address and section, marking the |
12454 | first one as "first" and any others as "duplicates". This is so | |
12455 | that the bpt instruction is only inserted once. If we have a | |
12456 | permanent breakpoint at the same place as BPT, make that one the | |
12457 | official one, and the rest as duplicates. Permanent breakpoints | |
12458 | are sorted first for the same address. | |
12459 | ||
12460 | Do the same for hardware watchpoints, but also considering the | |
12461 | watchpoint's type (regular/access/read) and length. */ | |
12462 | ||
12463 | bp_loc_first = NULL; | |
12464 | wp_loc_first = NULL; | |
12465 | awp_loc_first = NULL; | |
12466 | rwp_loc_first = NULL; | |
12467 | ALL_BP_LOCATIONS (loc, locp) | |
12468 | { | |
12469 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12470 | non-NULL. */ | |
348d480f | 12471 | struct bp_location **loc_first_p; |
d3fbdd86 | 12472 | b = loc->owner; |
348d480f | 12473 | |
6f380991 | 12474 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12475 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12476 | /* Don't detect duplicate for tracepoint locations because they are |
12477 | never duplicated. See the comments in field `duplicate' of | |
12478 | `struct bp_location'. */ | |
348d480f | 12479 | || is_tracepoint (b)) |
b775012e LM |
12480 | { |
12481 | /* Clear the condition modification flag. */ | |
12482 | loc->condition_changed = condition_unchanged; | |
12483 | continue; | |
12484 | } | |
348d480f | 12485 | |
348d480f PA |
12486 | if (b->type == bp_hardware_watchpoint) |
12487 | loc_first_p = &wp_loc_first; | |
12488 | else if (b->type == bp_read_watchpoint) | |
12489 | loc_first_p = &rwp_loc_first; | |
12490 | else if (b->type == bp_access_watchpoint) | |
12491 | loc_first_p = &awp_loc_first; | |
12492 | else | |
12493 | loc_first_p = &bp_loc_first; | |
12494 | ||
12495 | if (*loc_first_p == NULL | |
12496 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12497 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12498 | { | |
12499 | *loc_first_p = loc; | |
12500 | loc->duplicate = 0; | |
b775012e LM |
12501 | |
12502 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12503 | { | |
12504 | loc->needs_update = 1; | |
12505 | /* Clear the condition modification flag. */ | |
12506 | loc->condition_changed = condition_unchanged; | |
12507 | } | |
348d480f PA |
12508 | continue; |
12509 | } | |
12510 | ||
934709f0 PW |
12511 | |
12512 | /* This and the above ensure the invariant that the first location | |
12513 | is not duplicated, and is the inserted one. | |
12514 | All following are marked as duplicated, and are not inserted. */ | |
12515 | if (loc->inserted) | |
12516 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12517 | loc->duplicate = 1; |
12518 | ||
b775012e LM |
12519 | /* Clear the condition modification flag. */ |
12520 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12521 | } |
12522 | ||
a25a5a45 | 12523 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12524 | { |
04086b45 | 12525 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12526 | insert_breakpoint_locations (); |
12527 | else | |
12528 | { | |
44702360 PA |
12529 | /* Even though the caller told us to not insert new |
12530 | locations, we may still need to update conditions on the | |
12531 | target's side of breakpoints that were already inserted | |
12532 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12533 | only update conditions for locations that are marked |
12534 | "needs_update". */ | |
12535 | update_inserted_breakpoint_locations (); | |
12536 | } | |
12537 | } | |
348d480f | 12538 | |
04086b45 | 12539 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 YQ |
12540 | download_tracepoint_locations (); |
12541 | ||
348d480f PA |
12542 | do_cleanups (cleanups); |
12543 | } | |
12544 | ||
12545 | void | |
12546 | breakpoint_retire_moribund (void) | |
12547 | { | |
12548 | struct bp_location *loc; | |
12549 | int ix; | |
12550 | ||
12551 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12552 | if (--(loc->events_till_retirement) == 0) | |
12553 | { | |
12554 | decref_bp_location (&loc); | |
12555 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12556 | --ix; | |
12557 | } | |
12558 | } | |
12559 | ||
12560 | static void | |
44702360 | 12561 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12562 | { |
348d480f | 12563 | |
492d29ea PA |
12564 | TRY |
12565 | { | |
12566 | update_global_location_list (insert_mode); | |
12567 | } | |
12568 | CATCH (e, RETURN_MASK_ERROR) | |
12569 | { | |
12570 | } | |
12571 | END_CATCH | |
348d480f PA |
12572 | } |
12573 | ||
12574 | /* Clear BKP from a BPS. */ | |
12575 | ||
12576 | static void | |
12577 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12578 | { | |
12579 | bpstat bs; | |
12580 | ||
12581 | for (bs = bps; bs; bs = bs->next) | |
12582 | if (bs->breakpoint_at == bpt) | |
12583 | { | |
12584 | bs->breakpoint_at = NULL; | |
12585 | bs->old_val = NULL; | |
12586 | /* bs->commands will be freed later. */ | |
12587 | } | |
12588 | } | |
12589 | ||
12590 | /* Callback for iterate_over_threads. */ | |
12591 | static int | |
12592 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12593 | { | |
12594 | struct breakpoint *bpt = data; | |
12595 | ||
12596 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12597 | return 0; | |
12598 | } | |
12599 | ||
12600 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12601 | callbacks. */ | |
12602 | ||
12603 | static void | |
12604 | say_where (struct breakpoint *b) | |
12605 | { | |
12606 | struct value_print_options opts; | |
12607 | ||
12608 | get_user_print_options (&opts); | |
12609 | ||
12610 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12611 | single string. */ | |
12612 | if (b->loc == NULL) | |
12613 | { | |
f00aae0f KS |
12614 | /* For pending locations, the output differs slightly based |
12615 | on b->extra_string. If this is non-NULL, it contains either | |
12616 | a condition or dprintf arguments. */ | |
12617 | if (b->extra_string == NULL) | |
12618 | { | |
12619 | printf_filtered (_(" (%s) pending."), | |
12620 | event_location_to_string (b->location)); | |
12621 | } | |
12622 | else if (b->type == bp_dprintf) | |
12623 | { | |
12624 | printf_filtered (_(" (%s,%s) pending."), | |
12625 | event_location_to_string (b->location), | |
12626 | b->extra_string); | |
12627 | } | |
12628 | else | |
12629 | { | |
12630 | printf_filtered (_(" (%s %s) pending."), | |
12631 | event_location_to_string (b->location), | |
12632 | b->extra_string); | |
12633 | } | |
348d480f PA |
12634 | } |
12635 | else | |
12636 | { | |
2f202fde | 12637 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12638 | { |
12639 | printf_filtered (" at "); | |
12640 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12641 | gdb_stdout); | |
12642 | } | |
2f202fde | 12643 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12644 | { |
12645 | /* If there is a single location, we can print the location | |
12646 | more nicely. */ | |
12647 | if (b->loc->next == NULL) | |
12648 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12649 | symtab_to_filename_for_display (b->loc->symtab), |
12650 | b->loc->line_number); | |
f8eba3c6 TT |
12651 | else |
12652 | /* This is not ideal, but each location may have a | |
12653 | different file name, and this at least reflects the | |
12654 | real situation somewhat. */ | |
f00aae0f KS |
12655 | printf_filtered (": %s.", |
12656 | event_location_to_string (b->location)); | |
f8eba3c6 | 12657 | } |
348d480f PA |
12658 | |
12659 | if (b->loc->next) | |
12660 | { | |
12661 | struct bp_location *loc = b->loc; | |
12662 | int n = 0; | |
12663 | for (; loc; loc = loc->next) | |
12664 | ++n; | |
12665 | printf_filtered (" (%d locations)", n); | |
12666 | } | |
12667 | } | |
12668 | } | |
12669 | ||
348d480f PA |
12670 | /* Default bp_location_ops methods. */ |
12671 | ||
12672 | static void | |
12673 | bp_location_dtor (struct bp_location *self) | |
12674 | { | |
12675 | xfree (self->cond); | |
b775012e LM |
12676 | if (self->cond_bytecode) |
12677 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12678 | xfree (self->function_name); |
8b4f3082 PA |
12679 | |
12680 | VEC_free (agent_expr_p, self->target_info.conditions); | |
12681 | VEC_free (agent_expr_p, self->target_info.tcommands); | |
348d480f PA |
12682 | } |
12683 | ||
12684 | static const struct bp_location_ops bp_location_ops = | |
12685 | { | |
12686 | bp_location_dtor | |
12687 | }; | |
12688 | ||
2060206e PA |
12689 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12690 | inherit from. */ | |
348d480f | 12691 | |
2060206e PA |
12692 | static void |
12693 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12694 | { |
12695 | decref_counted_command_line (&self->commands); | |
12696 | xfree (self->cond_string); | |
fb81d016 | 12697 | xfree (self->extra_string); |
f8eba3c6 | 12698 | xfree (self->filter); |
f00aae0f KS |
12699 | delete_event_location (self->location); |
12700 | delete_event_location (self->location_range_end); | |
348d480f PA |
12701 | } |
12702 | ||
2060206e PA |
12703 | static struct bp_location * |
12704 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12705 | { |
12706 | struct bp_location *loc; | |
12707 | ||
12708 | loc = XNEW (struct bp_location); | |
12709 | init_bp_location (loc, &bp_location_ops, self); | |
12710 | return loc; | |
12711 | } | |
12712 | ||
2060206e PA |
12713 | static void |
12714 | base_breakpoint_re_set (struct breakpoint *b) | |
12715 | { | |
12716 | /* Nothing to re-set. */ | |
12717 | } | |
12718 | ||
12719 | #define internal_error_pure_virtual_called() \ | |
12720 | gdb_assert_not_reached ("pure virtual function called") | |
12721 | ||
12722 | static int | |
12723 | base_breakpoint_insert_location (struct bp_location *bl) | |
12724 | { | |
12725 | internal_error_pure_virtual_called (); | |
12726 | } | |
12727 | ||
12728 | static int | |
12729 | base_breakpoint_remove_location (struct bp_location *bl) | |
12730 | { | |
12731 | internal_error_pure_virtual_called (); | |
12732 | } | |
12733 | ||
12734 | static int | |
12735 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12736 | struct address_space *aspace, | |
09ac7c10 TT |
12737 | CORE_ADDR bp_addr, |
12738 | const struct target_waitstatus *ws) | |
2060206e PA |
12739 | { |
12740 | internal_error_pure_virtual_called (); | |
12741 | } | |
12742 | ||
12743 | static void | |
12744 | base_breakpoint_check_status (bpstat bs) | |
12745 | { | |
12746 | /* Always stop. */ | |
12747 | } | |
12748 | ||
12749 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12750 | errors. */ | |
12751 | ||
12752 | static int | |
12753 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12754 | { | |
12755 | internal_error_pure_virtual_called (); | |
12756 | } | |
12757 | ||
12758 | /* A "resources_needed" breakpoint_ops method that just internal | |
12759 | errors. */ | |
12760 | ||
12761 | static int | |
12762 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12763 | { | |
12764 | internal_error_pure_virtual_called (); | |
12765 | } | |
12766 | ||
12767 | static enum print_stop_action | |
12768 | base_breakpoint_print_it (bpstat bs) | |
12769 | { | |
12770 | internal_error_pure_virtual_called (); | |
12771 | } | |
12772 | ||
12773 | static void | |
12774 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12775 | struct ui_out *uiout) | |
12776 | { | |
12777 | /* nothing */ | |
12778 | } | |
12779 | ||
12780 | static void | |
12781 | base_breakpoint_print_mention (struct breakpoint *b) | |
12782 | { | |
12783 | internal_error_pure_virtual_called (); | |
12784 | } | |
12785 | ||
12786 | static void | |
12787 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12788 | { | |
12789 | internal_error_pure_virtual_called (); | |
12790 | } | |
12791 | ||
983af33b | 12792 | static void |
f00aae0f KS |
12793 | base_breakpoint_create_sals_from_location |
12794 | (const struct event_location *location, | |
12795 | struct linespec_result *canonical, | |
12796 | enum bptype type_wanted) | |
983af33b SDJ |
12797 | { |
12798 | internal_error_pure_virtual_called (); | |
12799 | } | |
12800 | ||
12801 | static void | |
12802 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12803 | struct linespec_result *c, | |
983af33b | 12804 | char *cond_string, |
e7e0cddf | 12805 | char *extra_string, |
983af33b SDJ |
12806 | enum bptype type_wanted, |
12807 | enum bpdisp disposition, | |
12808 | int thread, | |
12809 | int task, int ignore_count, | |
12810 | const struct breakpoint_ops *o, | |
12811 | int from_tty, int enabled, | |
44f238bb | 12812 | int internal, unsigned flags) |
983af33b SDJ |
12813 | { |
12814 | internal_error_pure_virtual_called (); | |
12815 | } | |
12816 | ||
12817 | static void | |
f00aae0f KS |
12818 | base_breakpoint_decode_location (struct breakpoint *b, |
12819 | const struct event_location *location, | |
983af33b SDJ |
12820 | struct symtabs_and_lines *sals) |
12821 | { | |
12822 | internal_error_pure_virtual_called (); | |
12823 | } | |
12824 | ||
ab04a2af TT |
12825 | /* The default 'explains_signal' method. */ |
12826 | ||
47591c29 | 12827 | static int |
427cd150 | 12828 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12829 | { |
47591c29 | 12830 | return 1; |
ab04a2af TT |
12831 | } |
12832 | ||
9d6e6e84 HZ |
12833 | /* The default "after_condition_true" method. */ |
12834 | ||
12835 | static void | |
12836 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12837 | { | |
12838 | /* Nothing to do. */ | |
12839 | } | |
12840 | ||
ab04a2af | 12841 | struct breakpoint_ops base_breakpoint_ops = |
2060206e PA |
12842 | { |
12843 | base_breakpoint_dtor, | |
12844 | base_breakpoint_allocate_location, | |
12845 | base_breakpoint_re_set, | |
12846 | base_breakpoint_insert_location, | |
12847 | base_breakpoint_remove_location, | |
12848 | base_breakpoint_breakpoint_hit, | |
12849 | base_breakpoint_check_status, | |
12850 | base_breakpoint_resources_needed, | |
12851 | base_breakpoint_works_in_software_mode, | |
12852 | base_breakpoint_print_it, | |
12853 | NULL, | |
12854 | base_breakpoint_print_one_detail, | |
12855 | base_breakpoint_print_mention, | |
983af33b | 12856 | base_breakpoint_print_recreate, |
5f700d83 | 12857 | base_breakpoint_create_sals_from_location, |
983af33b | 12858 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12859 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12860 | base_breakpoint_explains_signal, |
12861 | base_breakpoint_after_condition_true, | |
2060206e PA |
12862 | }; |
12863 | ||
12864 | /* Default breakpoint_ops methods. */ | |
12865 | ||
12866 | static void | |
348d480f PA |
12867 | bkpt_re_set (struct breakpoint *b) |
12868 | { | |
06edf0c0 | 12869 | /* FIXME: is this still reachable? */ |
f00aae0f | 12870 | if (event_location_empty_p (b->location)) |
06edf0c0 | 12871 | { |
f00aae0f | 12872 | /* Anything without a location can't be re-set. */ |
348d480f | 12873 | delete_breakpoint (b); |
06edf0c0 | 12874 | return; |
348d480f | 12875 | } |
06edf0c0 PA |
12876 | |
12877 | breakpoint_re_set_default (b); | |
348d480f PA |
12878 | } |
12879 | ||
2060206e | 12880 | static int |
348d480f PA |
12881 | bkpt_insert_location (struct bp_location *bl) |
12882 | { | |
12883 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
7c16b83e | 12884 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12885 | else |
7c16b83e | 12886 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12887 | } |
12888 | ||
2060206e | 12889 | static int |
348d480f PA |
12890 | bkpt_remove_location (struct bp_location *bl) |
12891 | { | |
12892 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12893 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12894 | else | |
7c16b83e | 12895 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12896 | } |
12897 | ||
2060206e | 12898 | static int |
348d480f | 12899 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12900 | struct address_space *aspace, CORE_ADDR bp_addr, |
12901 | const struct target_waitstatus *ws) | |
348d480f | 12902 | { |
09ac7c10 | 12903 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12904 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12905 | return 0; |
12906 | ||
348d480f PA |
12907 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12908 | aspace, bp_addr)) | |
12909 | return 0; | |
12910 | ||
12911 | if (overlay_debugging /* unmapped overlay section */ | |
12912 | && section_is_overlay (bl->section) | |
12913 | && !section_is_mapped (bl->section)) | |
12914 | return 0; | |
12915 | ||
12916 | return 1; | |
12917 | } | |
12918 | ||
cd1608cc PA |
12919 | static int |
12920 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
12921 | struct address_space *aspace, CORE_ADDR bp_addr, | |
12922 | const struct target_waitstatus *ws) | |
12923 | { | |
12924 | if (dprintf_style == dprintf_style_agent | |
12925 | && target_can_run_breakpoint_commands ()) | |
12926 | { | |
12927 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12928 | for this address it must be for a breakpoint that happens to | |
12929 | be set at the same address. */ | |
12930 | return 0; | |
12931 | } | |
12932 | ||
12933 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12934 | } | |
12935 | ||
2060206e | 12936 | static int |
348d480f PA |
12937 | bkpt_resources_needed (const struct bp_location *bl) |
12938 | { | |
12939 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12940 | ||
12941 | return 1; | |
12942 | } | |
12943 | ||
2060206e | 12944 | static enum print_stop_action |
348d480f PA |
12945 | bkpt_print_it (bpstat bs) |
12946 | { | |
348d480f PA |
12947 | struct breakpoint *b; |
12948 | const struct bp_location *bl; | |
001c8c33 | 12949 | int bp_temp; |
79a45e25 | 12950 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12951 | |
12952 | gdb_assert (bs->bp_location_at != NULL); | |
12953 | ||
12954 | bl = bs->bp_location_at; | |
12955 | b = bs->breakpoint_at; | |
12956 | ||
001c8c33 PA |
12957 | bp_temp = b->disposition == disp_del; |
12958 | if (bl->address != bl->requested_address) | |
12959 | breakpoint_adjustment_warning (bl->requested_address, | |
12960 | bl->address, | |
12961 | b->number, 1); | |
12962 | annotate_breakpoint (b->number); | |
12963 | if (bp_temp) | |
12964 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12965 | else | |
12966 | ui_out_text (uiout, "\nBreakpoint "); | |
12967 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12968 | { |
001c8c33 PA |
12969 | ui_out_field_string (uiout, "reason", |
12970 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12971 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12972 | } |
001c8c33 PA |
12973 | ui_out_field_int (uiout, "bkptno", b->number); |
12974 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12975 | |
001c8c33 | 12976 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12977 | } |
12978 | ||
2060206e | 12979 | static void |
06edf0c0 PA |
12980 | bkpt_print_mention (struct breakpoint *b) |
12981 | { | |
79a45e25 | 12982 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12983 | return; |
12984 | ||
12985 | switch (b->type) | |
12986 | { | |
12987 | case bp_breakpoint: | |
12988 | case bp_gnu_ifunc_resolver: | |
12989 | if (b->disposition == disp_del) | |
12990 | printf_filtered (_("Temporary breakpoint")); | |
12991 | else | |
12992 | printf_filtered (_("Breakpoint")); | |
12993 | printf_filtered (_(" %d"), b->number); | |
12994 | if (b->type == bp_gnu_ifunc_resolver) | |
12995 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12996 | break; | |
12997 | case bp_hardware_breakpoint: | |
12998 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12999 | break; | |
e7e0cddf SS |
13000 | case bp_dprintf: |
13001 | printf_filtered (_("Dprintf %d"), b->number); | |
13002 | break; | |
06edf0c0 PA |
13003 | } |
13004 | ||
13005 | say_where (b); | |
13006 | } | |
13007 | ||
2060206e | 13008 | static void |
06edf0c0 PA |
13009 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
13010 | { | |
13011 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
13012 | fprintf_unfiltered (fp, "tbreak"); | |
13013 | else if (tp->type == bp_breakpoint) | |
13014 | fprintf_unfiltered (fp, "break"); | |
13015 | else if (tp->type == bp_hardware_breakpoint | |
13016 | && tp->disposition == disp_del) | |
13017 | fprintf_unfiltered (fp, "thbreak"); | |
13018 | else if (tp->type == bp_hardware_breakpoint) | |
13019 | fprintf_unfiltered (fp, "hbreak"); | |
13020 | else | |
13021 | internal_error (__FILE__, __LINE__, | |
13022 | _("unhandled breakpoint type %d"), (int) tp->type); | |
13023 | ||
f00aae0f KS |
13024 | fprintf_unfiltered (fp, " %s", |
13025 | event_location_to_string (tp->location)); | |
13026 | ||
13027 | /* Print out extra_string if this breakpoint is pending. It might | |
13028 | contain, for example, conditions that were set by the user. */ | |
13029 | if (tp->loc == NULL && tp->extra_string != NULL) | |
13030 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
13031 | ||
dd11a36c | 13032 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
13033 | } |
13034 | ||
983af33b | 13035 | static void |
f00aae0f KS |
13036 | bkpt_create_sals_from_location (const struct event_location *location, |
13037 | struct linespec_result *canonical, | |
13038 | enum bptype type_wanted) | |
983af33b | 13039 | { |
f00aae0f | 13040 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13041 | } |
13042 | ||
13043 | static void | |
13044 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13045 | struct linespec_result *canonical, | |
983af33b | 13046 | char *cond_string, |
e7e0cddf | 13047 | char *extra_string, |
983af33b SDJ |
13048 | enum bptype type_wanted, |
13049 | enum bpdisp disposition, | |
13050 | int thread, | |
13051 | int task, int ignore_count, | |
13052 | const struct breakpoint_ops *ops, | |
13053 | int from_tty, int enabled, | |
44f238bb | 13054 | int internal, unsigned flags) |
983af33b | 13055 | { |
023fa29b | 13056 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13057 | cond_string, extra_string, |
13058 | type_wanted, | |
983af33b SDJ |
13059 | disposition, thread, task, |
13060 | ignore_count, ops, from_tty, | |
44f238bb | 13061 | enabled, internal, flags); |
983af33b SDJ |
13062 | } |
13063 | ||
13064 | static void | |
f00aae0f KS |
13065 | bkpt_decode_location (struct breakpoint *b, |
13066 | const struct event_location *location, | |
983af33b SDJ |
13067 | struct symtabs_and_lines *sals) |
13068 | { | |
f00aae0f | 13069 | decode_location_default (b, location, sals); |
983af33b SDJ |
13070 | } |
13071 | ||
06edf0c0 PA |
13072 | /* Virtual table for internal breakpoints. */ |
13073 | ||
13074 | static void | |
13075 | internal_bkpt_re_set (struct breakpoint *b) | |
13076 | { | |
13077 | switch (b->type) | |
13078 | { | |
13079 | /* Delete overlay event and longjmp master breakpoints; they | |
13080 | will be reset later by breakpoint_re_set. */ | |
13081 | case bp_overlay_event: | |
13082 | case bp_longjmp_master: | |
13083 | case bp_std_terminate_master: | |
13084 | case bp_exception_master: | |
13085 | delete_breakpoint (b); | |
13086 | break; | |
13087 | ||
13088 | /* This breakpoint is special, it's set up when the inferior | |
13089 | starts and we really don't want to touch it. */ | |
13090 | case bp_shlib_event: | |
13091 | ||
13092 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13093 | it is set up, we do not want to touch it. */ | |
13094 | case bp_thread_event: | |
13095 | break; | |
13096 | } | |
13097 | } | |
13098 | ||
13099 | static void | |
13100 | internal_bkpt_check_status (bpstat bs) | |
13101 | { | |
a9b3a50f PA |
13102 | if (bs->breakpoint_at->type == bp_shlib_event) |
13103 | { | |
13104 | /* If requested, stop when the dynamic linker notifies GDB of | |
13105 | events. This allows the user to get control and place | |
13106 | breakpoints in initializer routines for dynamically loaded | |
13107 | objects (among other things). */ | |
13108 | bs->stop = stop_on_solib_events; | |
13109 | bs->print = stop_on_solib_events; | |
13110 | } | |
13111 | else | |
13112 | bs->stop = 0; | |
06edf0c0 PA |
13113 | } |
13114 | ||
13115 | static enum print_stop_action | |
13116 | internal_bkpt_print_it (bpstat bs) | |
13117 | { | |
06edf0c0 | 13118 | struct breakpoint *b; |
06edf0c0 | 13119 | |
06edf0c0 PA |
13120 | b = bs->breakpoint_at; |
13121 | ||
06edf0c0 PA |
13122 | switch (b->type) |
13123 | { | |
348d480f PA |
13124 | case bp_shlib_event: |
13125 | /* Did we stop because the user set the stop_on_solib_events | |
13126 | variable? (If so, we report this as a generic, "Stopped due | |
13127 | to shlib event" message.) */ | |
edcc5120 | 13128 | print_solib_event (0); |
348d480f PA |
13129 | break; |
13130 | ||
13131 | case bp_thread_event: | |
13132 | /* Not sure how we will get here. | |
13133 | GDB should not stop for these breakpoints. */ | |
13134 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13135 | break; |
13136 | ||
13137 | case bp_overlay_event: | |
13138 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13139 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13140 | break; |
13141 | ||
13142 | case bp_longjmp_master: | |
13143 | /* These should never be enabled. */ | |
13144 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13145 | break; |
13146 | ||
13147 | case bp_std_terminate_master: | |
13148 | /* These should never be enabled. */ | |
13149 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13150 | "gdb should not stop!\n")); | |
348d480f PA |
13151 | break; |
13152 | ||
13153 | case bp_exception_master: | |
13154 | /* These should never be enabled. */ | |
13155 | printf_filtered (_("Exception Master Breakpoint: " | |
13156 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13157 | break; |
13158 | } | |
13159 | ||
001c8c33 | 13160 | return PRINT_NOTHING; |
06edf0c0 PA |
13161 | } |
13162 | ||
13163 | static void | |
13164 | internal_bkpt_print_mention (struct breakpoint *b) | |
13165 | { | |
13166 | /* Nothing to mention. These breakpoints are internal. */ | |
13167 | } | |
13168 | ||
06edf0c0 PA |
13169 | /* Virtual table for momentary breakpoints */ |
13170 | ||
13171 | static void | |
13172 | momentary_bkpt_re_set (struct breakpoint *b) | |
13173 | { | |
13174 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13175 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13176 | Otherwise these should have been blown away via the cleanup chain |
13177 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13178 | } | |
13179 | ||
13180 | static void | |
13181 | momentary_bkpt_check_status (bpstat bs) | |
13182 | { | |
13183 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13184 | } | |
13185 | ||
13186 | static enum print_stop_action | |
13187 | momentary_bkpt_print_it (bpstat bs) | |
13188 | { | |
79a45e25 PA |
13189 | struct ui_out *uiout = current_uiout; |
13190 | ||
001c8c33 | 13191 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13192 | { |
001c8c33 | 13193 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13194 | |
001c8c33 PA |
13195 | switch (b->type) |
13196 | { | |
13197 | case bp_finish: | |
13198 | ui_out_field_string | |
13199 | (uiout, "reason", | |
13200 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13201 | break; | |
348d480f | 13202 | |
001c8c33 PA |
13203 | case bp_until: |
13204 | ui_out_field_string | |
13205 | (uiout, "reason", | |
13206 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13207 | break; | |
13208 | } | |
348d480f PA |
13209 | } |
13210 | ||
001c8c33 | 13211 | return PRINT_UNKNOWN; |
348d480f PA |
13212 | } |
13213 | ||
06edf0c0 PA |
13214 | static void |
13215 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13216 | { |
06edf0c0 | 13217 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13218 | } |
13219 | ||
e2e4d78b JK |
13220 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13221 | ||
13222 | It gets cleared already on the removal of the first one of such placed | |
13223 | breakpoints. This is OK as they get all removed altogether. */ | |
13224 | ||
13225 | static void | |
13226 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13227 | { | |
13228 | struct thread_info *tp = find_thread_id (self->thread); | |
13229 | ||
13230 | if (tp) | |
13231 | tp->initiating_frame = null_frame_id; | |
13232 | ||
13233 | momentary_breakpoint_ops.dtor (self); | |
13234 | } | |
13235 | ||
55aa24fb SDJ |
13236 | /* Specific methods for probe breakpoints. */ |
13237 | ||
13238 | static int | |
13239 | bkpt_probe_insert_location (struct bp_location *bl) | |
13240 | { | |
13241 | int v = bkpt_insert_location (bl); | |
13242 | ||
13243 | if (v == 0) | |
13244 | { | |
13245 | /* The insertion was successful, now let's set the probe's semaphore | |
13246 | if needed. */ | |
0ea5cda8 SDJ |
13247 | if (bl->probe.probe->pops->set_semaphore != NULL) |
13248 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
13249 | bl->probe.objfile, | |
13250 | bl->gdbarch); | |
55aa24fb SDJ |
13251 | } |
13252 | ||
13253 | return v; | |
13254 | } | |
13255 | ||
13256 | static int | |
13257 | bkpt_probe_remove_location (struct bp_location *bl) | |
13258 | { | |
13259 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
13260 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
13261 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
13262 | bl->probe.objfile, | |
13263 | bl->gdbarch); | |
55aa24fb SDJ |
13264 | |
13265 | return bkpt_remove_location (bl); | |
13266 | } | |
13267 | ||
13268 | static void | |
f00aae0f | 13269 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13270 | struct linespec_result *canonical, |
f00aae0f | 13271 | enum bptype type_wanted) |
55aa24fb SDJ |
13272 | { |
13273 | struct linespec_sals lsal; | |
13274 | ||
f00aae0f KS |
13275 | lsal.sals = parse_probes (location, canonical); |
13276 | lsal.canonical = xstrdup (event_location_to_string (canonical->location)); | |
55aa24fb SDJ |
13277 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); |
13278 | } | |
13279 | ||
13280 | static void | |
f00aae0f KS |
13281 | bkpt_probe_decode_location (struct breakpoint *b, |
13282 | const struct event_location *location, | |
55aa24fb SDJ |
13283 | struct symtabs_and_lines *sals) |
13284 | { | |
f00aae0f | 13285 | *sals = parse_probes (location, NULL); |
55aa24fb SDJ |
13286 | if (!sals->sals) |
13287 | error (_("probe not found")); | |
13288 | } | |
13289 | ||
348d480f | 13290 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13291 | |
348d480f PA |
13292 | static void |
13293 | tracepoint_re_set (struct breakpoint *b) | |
13294 | { | |
13295 | breakpoint_re_set_default (b); | |
13296 | } | |
876fa593 | 13297 | |
348d480f PA |
13298 | static int |
13299 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13300 | struct address_space *aspace, CORE_ADDR bp_addr, |
13301 | const struct target_waitstatus *ws) | |
348d480f PA |
13302 | { |
13303 | /* By definition, the inferior does not report stops at | |
13304 | tracepoints. */ | |
13305 | return 0; | |
74960c60 VP |
13306 | } |
13307 | ||
13308 | static void | |
348d480f PA |
13309 | tracepoint_print_one_detail (const struct breakpoint *self, |
13310 | struct ui_out *uiout) | |
74960c60 | 13311 | { |
d9b3f62e PA |
13312 | struct tracepoint *tp = (struct tracepoint *) self; |
13313 | if (tp->static_trace_marker_id) | |
348d480f PA |
13314 | { |
13315 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13316 | |
348d480f PA |
13317 | ui_out_text (uiout, "\tmarker id is "); |
13318 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13319 | tp->static_trace_marker_id); |
348d480f PA |
13320 | ui_out_text (uiout, "\n"); |
13321 | } | |
0d381245 VP |
13322 | } |
13323 | ||
a474d7c2 | 13324 | static void |
348d480f | 13325 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13326 | { |
79a45e25 | 13327 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13328 | return; |
cc59ec59 | 13329 | |
348d480f PA |
13330 | switch (b->type) |
13331 | { | |
13332 | case bp_tracepoint: | |
13333 | printf_filtered (_("Tracepoint")); | |
13334 | printf_filtered (_(" %d"), b->number); | |
13335 | break; | |
13336 | case bp_fast_tracepoint: | |
13337 | printf_filtered (_("Fast tracepoint")); | |
13338 | printf_filtered (_(" %d"), b->number); | |
13339 | break; | |
13340 | case bp_static_tracepoint: | |
13341 | printf_filtered (_("Static tracepoint")); | |
13342 | printf_filtered (_(" %d"), b->number); | |
13343 | break; | |
13344 | default: | |
13345 | internal_error (__FILE__, __LINE__, | |
13346 | _("unhandled tracepoint type %d"), (int) b->type); | |
13347 | } | |
13348 | ||
13349 | say_where (b); | |
a474d7c2 PA |
13350 | } |
13351 | ||
348d480f | 13352 | static void |
d9b3f62e | 13353 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13354 | { |
d9b3f62e PA |
13355 | struct tracepoint *tp = (struct tracepoint *) self; |
13356 | ||
13357 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13358 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13359 | if (self->type == bp_static_tracepoint) |
348d480f | 13360 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13361 | else if (self->type == bp_tracepoint) |
348d480f PA |
13362 | fprintf_unfiltered (fp, "trace"); |
13363 | else | |
13364 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13365 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13366 | |
f00aae0f KS |
13367 | fprintf_unfiltered (fp, " %s", |
13368 | event_location_to_string (self->location)); | |
d9b3f62e PA |
13369 | print_recreate_thread (self, fp); |
13370 | ||
13371 | if (tp->pass_count) | |
13372 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13373 | } |
13374 | ||
983af33b | 13375 | static void |
f00aae0f KS |
13376 | tracepoint_create_sals_from_location (const struct event_location *location, |
13377 | struct linespec_result *canonical, | |
13378 | enum bptype type_wanted) | |
983af33b | 13379 | { |
f00aae0f | 13380 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13381 | } |
13382 | ||
13383 | static void | |
13384 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13385 | struct linespec_result *canonical, | |
983af33b | 13386 | char *cond_string, |
e7e0cddf | 13387 | char *extra_string, |
983af33b SDJ |
13388 | enum bptype type_wanted, |
13389 | enum bpdisp disposition, | |
13390 | int thread, | |
13391 | int task, int ignore_count, | |
13392 | const struct breakpoint_ops *ops, | |
13393 | int from_tty, int enabled, | |
44f238bb | 13394 | int internal, unsigned flags) |
983af33b | 13395 | { |
023fa29b | 13396 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13397 | cond_string, extra_string, |
13398 | type_wanted, | |
983af33b SDJ |
13399 | disposition, thread, task, |
13400 | ignore_count, ops, from_tty, | |
44f238bb | 13401 | enabled, internal, flags); |
983af33b SDJ |
13402 | } |
13403 | ||
13404 | static void | |
f00aae0f KS |
13405 | tracepoint_decode_location (struct breakpoint *b, |
13406 | const struct event_location *location, | |
983af33b SDJ |
13407 | struct symtabs_and_lines *sals) |
13408 | { | |
f00aae0f | 13409 | decode_location_default (b, location, sals); |
983af33b SDJ |
13410 | } |
13411 | ||
2060206e | 13412 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13413 | |
55aa24fb SDJ |
13414 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13415 | static probe. */ | |
13416 | ||
13417 | static void | |
f00aae0f KS |
13418 | tracepoint_probe_create_sals_from_location |
13419 | (const struct event_location *location, | |
13420 | struct linespec_result *canonical, | |
13421 | enum bptype type_wanted) | |
55aa24fb SDJ |
13422 | { |
13423 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13424 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13425 | } |
13426 | ||
13427 | static void | |
f00aae0f KS |
13428 | tracepoint_probe_decode_location (struct breakpoint *b, |
13429 | const struct event_location *location, | |
55aa24fb SDJ |
13430 | struct symtabs_and_lines *sals) |
13431 | { | |
13432 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13433 | bkpt_probe_decode_location (b, location, sals); |
55aa24fb SDJ |
13434 | } |
13435 | ||
13436 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13437 | ||
5c2b4418 HZ |
13438 | /* Dprintf breakpoint_ops methods. */ |
13439 | ||
13440 | static void | |
13441 | dprintf_re_set (struct breakpoint *b) | |
13442 | { | |
13443 | breakpoint_re_set_default (b); | |
13444 | ||
f00aae0f KS |
13445 | /* extra_string should never be non-NULL for dprintf. */ |
13446 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13447 | |
13448 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13449 | 2 - create a dprintf, which resolves fine. | |
13450 | 3 - disconnect from target 1 | |
13451 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13452 | ||
13453 | After steps #3/#4, you'll want the dprintf command list to | |
13454 | be updated, because target 1 and 2 may well return different | |
13455 | answers for target_can_run_breakpoint_commands(). | |
13456 | Given absence of finer grained resetting, we get to do | |
13457 | it all the time. */ | |
13458 | if (b->extra_string != NULL) | |
13459 | update_dprintf_command_list (b); | |
13460 | } | |
13461 | ||
2d9442cc HZ |
13462 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13463 | ||
13464 | static void | |
13465 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13466 | { | |
f00aae0f KS |
13467 | fprintf_unfiltered (fp, "dprintf %s,%s", |
13468 | event_location_to_string (tp->location), | |
2d9442cc HZ |
13469 | tp->extra_string); |
13470 | print_recreate_thread (tp, fp); | |
13471 | } | |
13472 | ||
9d6e6e84 HZ |
13473 | /* Implement the "after_condition_true" breakpoint_ops method for |
13474 | dprintf. | |
13475 | ||
13476 | dprintf's are implemented with regular commands in their command | |
13477 | list, but we run the commands here instead of before presenting the | |
13478 | stop to the user, as dprintf's don't actually cause a stop. This | |
13479 | also makes it so that the commands of multiple dprintfs at the same | |
13480 | address are all handled. */ | |
13481 | ||
13482 | static void | |
13483 | dprintf_after_condition_true (struct bpstats *bs) | |
13484 | { | |
13485 | struct cleanup *old_chain; | |
13486 | struct bpstats tmp_bs = { NULL }; | |
13487 | struct bpstats *tmp_bs_p = &tmp_bs; | |
13488 | ||
13489 | /* dprintf's never cause a stop. This wasn't set in the | |
13490 | check_status hook instead because that would make the dprintf's | |
13491 | condition not be evaluated. */ | |
13492 | bs->stop = 0; | |
13493 | ||
13494 | /* Run the command list here. Take ownership of it instead of | |
13495 | copying. We never want these commands to run later in | |
13496 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13497 | be set at same address as this dprintf, or even if running the | |
13498 | commands here throws. */ | |
13499 | tmp_bs.commands = bs->commands; | |
13500 | bs->commands = NULL; | |
13501 | old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands); | |
13502 | ||
13503 | bpstat_do_actions_1 (&tmp_bs_p); | |
13504 | ||
13505 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13506 | bpstat_do_actions_1 may return early without processing the whole | |
13507 | list. */ | |
13508 | do_cleanups (old_chain); | |
13509 | } | |
13510 | ||
983af33b SDJ |
13511 | /* The breakpoint_ops structure to be used on static tracepoints with |
13512 | markers (`-m'). */ | |
13513 | ||
13514 | static void | |
f00aae0f | 13515 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13516 | struct linespec_result *canonical, |
f00aae0f | 13517 | enum bptype type_wanted) |
983af33b SDJ |
13518 | { |
13519 | struct linespec_sals lsal; | |
f00aae0f KS |
13520 | const char *arg_start, *arg; |
13521 | char *str; | |
13522 | struct cleanup *cleanup; | |
983af33b | 13523 | |
f00aae0f KS |
13524 | arg = arg_start = get_linespec_location (location); |
13525 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13526 | |
f00aae0f KS |
13527 | str = savestring (arg_start, arg - arg_start); |
13528 | cleanup = make_cleanup (xfree, str); | |
13529 | canonical->location = new_linespec_location (&str); | |
13530 | do_cleanups (cleanup); | |
983af33b | 13531 | |
f00aae0f | 13532 | lsal.canonical = xstrdup (event_location_to_string (canonical->location)); |
983af33b SDJ |
13533 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); |
13534 | } | |
13535 | ||
13536 | static void | |
13537 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13538 | struct linespec_result *canonical, | |
983af33b | 13539 | char *cond_string, |
e7e0cddf | 13540 | char *extra_string, |
983af33b SDJ |
13541 | enum bptype type_wanted, |
13542 | enum bpdisp disposition, | |
13543 | int thread, | |
13544 | int task, int ignore_count, | |
13545 | const struct breakpoint_ops *ops, | |
13546 | int from_tty, int enabled, | |
44f238bb | 13547 | int internal, unsigned flags) |
983af33b SDJ |
13548 | { |
13549 | int i; | |
52d361e1 YQ |
13550 | struct linespec_sals *lsal = VEC_index (linespec_sals, |
13551 | canonical->sals, 0); | |
983af33b SDJ |
13552 | |
13553 | /* If the user is creating a static tracepoint by marker id | |
13554 | (strace -m MARKER_ID), then store the sals index, so that | |
13555 | breakpoint_re_set can try to match up which of the newly | |
13556 | found markers corresponds to this one, and, don't try to | |
13557 | expand multiple locations for each sal, given than SALS | |
13558 | already should contain all sals for MARKER_ID. */ | |
13559 | ||
13560 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13561 | { | |
13562 | struct symtabs_and_lines expanded; | |
13563 | struct tracepoint *tp; | |
13564 | struct cleanup *old_chain; | |
f00aae0f | 13565 | struct event_location *location; |
983af33b SDJ |
13566 | |
13567 | expanded.nelts = 1; | |
13568 | expanded.sals = &lsal->sals.sals[i]; | |
13569 | ||
f00aae0f KS |
13570 | location = copy_event_location (canonical->location); |
13571 | old_chain = make_cleanup_delete_event_location (location); | |
983af33b SDJ |
13572 | |
13573 | tp = XCNEW (struct tracepoint); | |
13574 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
f00aae0f | 13575 | location, NULL, |
e7e0cddf SS |
13576 | cond_string, extra_string, |
13577 | type_wanted, disposition, | |
983af33b | 13578 | thread, task, ignore_count, ops, |
44f238bb | 13579 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13580 | canonical->special_display); |
13581 | /* Given that its possible to have multiple markers with | |
13582 | the same string id, if the user is creating a static | |
13583 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13584 | store the sals index, so that breakpoint_re_set can | |
13585 | try to match up which of the newly found markers | |
13586 | corresponds to this one */ | |
13587 | tp->static_trace_marker_id_idx = i; | |
13588 | ||
13589 | install_breakpoint (internal, &tp->base, 0); | |
13590 | ||
13591 | discard_cleanups (old_chain); | |
13592 | } | |
13593 | } | |
13594 | ||
13595 | static void | |
f00aae0f KS |
13596 | strace_marker_decode_location (struct breakpoint *b, |
13597 | const struct event_location *location, | |
983af33b SDJ |
13598 | struct symtabs_and_lines *sals) |
13599 | { | |
13600 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13601 | const char *s = get_linespec_location (location); |
983af33b | 13602 | |
f00aae0f | 13603 | *sals = decode_static_tracepoint_spec (&s); |
983af33b SDJ |
13604 | if (sals->nelts > tp->static_trace_marker_id_idx) |
13605 | { | |
13606 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13607 | sals->nelts = 1; | |
13608 | } | |
13609 | else | |
13610 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13611 | } | |
13612 | ||
13613 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13614 | ||
13615 | static int | |
13616 | strace_marker_p (struct breakpoint *b) | |
13617 | { | |
13618 | return b->ops == &strace_marker_breakpoint_ops; | |
13619 | } | |
13620 | ||
53a5351d | 13621 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13622 | structures. */ |
c906108c SS |
13623 | |
13624 | void | |
fba45db2 | 13625 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13626 | { |
52f0bd74 | 13627 | struct breakpoint *b; |
c906108c | 13628 | |
8a3fe4f8 | 13629 | gdb_assert (bpt != NULL); |
c906108c | 13630 | |
4a64f543 MS |
13631 | /* Has this bp already been deleted? This can happen because |
13632 | multiple lists can hold pointers to bp's. bpstat lists are | |
13633 | especial culprits. | |
13634 | ||
13635 | One example of this happening is a watchpoint's scope bp. When | |
13636 | the scope bp triggers, we notice that the watchpoint is out of | |
13637 | scope, and delete it. We also delete its scope bp. But the | |
13638 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13639 | That bpstat is then checked for auto-deleting bp's, which are | |
13640 | deleted. | |
13641 | ||
13642 | A real solution to this problem might involve reference counts in | |
13643 | bp's, and/or giving them pointers back to their referencing | |
13644 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13645 | storage when no more references were extent. A cheaper bandaid | |
13646 | was chosen. */ | |
c906108c SS |
13647 | if (bpt->type == bp_none) |
13648 | return; | |
13649 | ||
4a64f543 MS |
13650 | /* At least avoid this stale reference until the reference counting |
13651 | of breakpoints gets resolved. */ | |
d0fb5eae | 13652 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13653 | { |
d0fb5eae | 13654 | struct breakpoint *related; |
3a5c3e22 | 13655 | struct watchpoint *w; |
d0fb5eae JK |
13656 | |
13657 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13658 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13659 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13660 | w = (struct watchpoint *) bpt; |
13661 | else | |
13662 | w = NULL; | |
13663 | if (w != NULL) | |
13664 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13665 | |
13666 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13667 | for (related = bpt; related->related_breakpoint != bpt; | |
13668 | related = related->related_breakpoint); | |
13669 | related->related_breakpoint = bpt->related_breakpoint; | |
13670 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13671 | } |
13672 | ||
a9634178 TJB |
13673 | /* watch_command_1 creates a watchpoint but only sets its number if |
13674 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13675 | a problem in that process, we'll be asked to delete the half-created | |
13676 | watchpoint. In that case, don't announce the deletion. */ | |
13677 | if (bpt->number) | |
13678 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13679 | |
c906108c SS |
13680 | if (breakpoint_chain == bpt) |
13681 | breakpoint_chain = bpt->next; | |
13682 | ||
c906108c SS |
13683 | ALL_BREAKPOINTS (b) |
13684 | if (b->next == bpt) | |
c5aa993b JM |
13685 | { |
13686 | b->next = bpt->next; | |
13687 | break; | |
13688 | } | |
c906108c | 13689 | |
f431efe5 PA |
13690 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13691 | been freed. */ | |
13692 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13693 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13694 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13695 | commands are associated with the bpstat; if we remove it here, | |
13696 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13697 | event-top.c won't do anything, and temporary breakpoints with | |
13698 | commands won't work. */ | |
13699 | ||
13700 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13701 | ||
4a64f543 MS |
13702 | /* Now that breakpoint is removed from breakpoint list, update the |
13703 | global location list. This will remove locations that used to | |
13704 | belong to this breakpoint. Do this before freeing the breakpoint | |
13705 | itself, since remove_breakpoint looks at location's owner. It | |
13706 | might be better design to have location completely | |
13707 | self-contained, but it's not the case now. */ | |
44702360 | 13708 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13709 | |
348d480f | 13710 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13711 | /* On the chance that someone will soon try again to delete this |
13712 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13713 | bpt->type = bp_none; |
b8c9b27d | 13714 | xfree (bpt); |
c906108c SS |
13715 | } |
13716 | ||
4d6140d9 AC |
13717 | static void |
13718 | do_delete_breakpoint_cleanup (void *b) | |
13719 | { | |
13720 | delete_breakpoint (b); | |
13721 | } | |
13722 | ||
13723 | struct cleanup * | |
13724 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13725 | { | |
13726 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13727 | } | |
13728 | ||
51be5b68 PA |
13729 | /* Iterator function to call a user-provided callback function once |
13730 | for each of B and its related breakpoints. */ | |
13731 | ||
13732 | static void | |
13733 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13734 | void (*function) (struct breakpoint *, | |
13735 | void *), | |
13736 | void *data) | |
13737 | { | |
13738 | struct breakpoint *related; | |
13739 | ||
13740 | related = b; | |
13741 | do | |
13742 | { | |
13743 | struct breakpoint *next; | |
13744 | ||
13745 | /* FUNCTION may delete RELATED. */ | |
13746 | next = related->related_breakpoint; | |
13747 | ||
13748 | if (next == related) | |
13749 | { | |
13750 | /* RELATED is the last ring entry. */ | |
13751 | function (related, data); | |
13752 | ||
13753 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13754 | B. There's nothing left to do anyway, so just break | |
13755 | out. */ | |
13756 | break; | |
13757 | } | |
13758 | else | |
13759 | function (related, data); | |
13760 | ||
13761 | related = next; | |
13762 | } | |
13763 | while (related != b); | |
13764 | } | |
95a42b64 TT |
13765 | |
13766 | static void | |
13767 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13768 | { | |
13769 | delete_breakpoint (b); | |
13770 | } | |
13771 | ||
51be5b68 PA |
13772 | /* A callback for map_breakpoint_numbers that calls |
13773 | delete_breakpoint. */ | |
13774 | ||
13775 | static void | |
13776 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13777 | { | |
13778 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13779 | } | |
13780 | ||
c906108c | 13781 | void |
fba45db2 | 13782 | delete_command (char *arg, int from_tty) |
c906108c | 13783 | { |
35df4500 | 13784 | struct breakpoint *b, *b_tmp; |
c906108c | 13785 | |
ea9365bb TT |
13786 | dont_repeat (); |
13787 | ||
c906108c SS |
13788 | if (arg == 0) |
13789 | { | |
13790 | int breaks_to_delete = 0; | |
13791 | ||
46c6471b PA |
13792 | /* Delete all breakpoints if no argument. Do not delete |
13793 | internal breakpoints, these have to be deleted with an | |
13794 | explicit breakpoint number argument. */ | |
c5aa993b | 13795 | ALL_BREAKPOINTS (b) |
46c6471b | 13796 | if (user_breakpoint_p (b)) |
973d738b DJ |
13797 | { |
13798 | breaks_to_delete = 1; | |
13799 | break; | |
13800 | } | |
c906108c SS |
13801 | |
13802 | /* Ask user only if there are some breakpoints to delete. */ | |
13803 | if (!from_tty | |
e2e0b3e5 | 13804 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13805 | { |
35df4500 | 13806 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13807 | if (user_breakpoint_p (b)) |
c5aa993b | 13808 | delete_breakpoint (b); |
c906108c SS |
13809 | } |
13810 | } | |
13811 | else | |
51be5b68 | 13812 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13813 | } |
13814 | ||
0d381245 VP |
13815 | static int |
13816 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13817 | { |
0d381245 | 13818 | for (; loc; loc = loc->next) |
8645ff69 UW |
13819 | if (!loc->shlib_disabled |
13820 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13821 | return 0; |
13822 | return 1; | |
fe3f5fa8 VP |
13823 | } |
13824 | ||
776592bf DE |
13825 | /* Subroutine of update_breakpoint_locations to simplify it. |
13826 | Return non-zero if multiple fns in list LOC have the same name. | |
13827 | Null names are ignored. */ | |
13828 | ||
13829 | static int | |
13830 | ambiguous_names_p (struct bp_location *loc) | |
13831 | { | |
13832 | struct bp_location *l; | |
13833 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13834 | (int (*) (const void *, |
13835 | const void *)) streq, | |
776592bf DE |
13836 | NULL, xcalloc, xfree); |
13837 | ||
13838 | for (l = loc; l != NULL; l = l->next) | |
13839 | { | |
13840 | const char **slot; | |
13841 | const char *name = l->function_name; | |
13842 | ||
13843 | /* Allow for some names to be NULL, ignore them. */ | |
13844 | if (name == NULL) | |
13845 | continue; | |
13846 | ||
13847 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13848 | INSERT); | |
4a64f543 MS |
13849 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13850 | returns NULL. */ | |
776592bf DE |
13851 | if (*slot != NULL) |
13852 | { | |
13853 | htab_delete (htab); | |
13854 | return 1; | |
13855 | } | |
13856 | *slot = name; | |
13857 | } | |
13858 | ||
13859 | htab_delete (htab); | |
13860 | return 0; | |
13861 | } | |
13862 | ||
0fb4aa4b PA |
13863 | /* When symbols change, it probably means the sources changed as well, |
13864 | and it might mean the static tracepoint markers are no longer at | |
13865 | the same address or line numbers they used to be at last we | |
13866 | checked. Losing your static tracepoints whenever you rebuild is | |
13867 | undesirable. This function tries to resync/rematch gdb static | |
13868 | tracepoints with the markers on the target, for static tracepoints | |
13869 | that have not been set by marker id. Static tracepoint that have | |
13870 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13871 | The heuristic is: | |
13872 | ||
13873 | 1) For a tracepoint set at a specific address, look for a marker at | |
13874 | the old PC. If one is found there, assume to be the same marker. | |
13875 | If the name / string id of the marker found is different from the | |
13876 | previous known name, assume that means the user renamed the marker | |
13877 | in the sources, and output a warning. | |
13878 | ||
13879 | 2) For a tracepoint set at a given line number, look for a marker | |
13880 | at the new address of the old line number. If one is found there, | |
13881 | assume to be the same marker. If the name / string id of the | |
13882 | marker found is different from the previous known name, assume that | |
13883 | means the user renamed the marker in the sources, and output a | |
13884 | warning. | |
13885 | ||
13886 | 3) If a marker is no longer found at the same address or line, it | |
13887 | may mean the marker no longer exists. But it may also just mean | |
13888 | the code changed a bit. Maybe the user added a few lines of code | |
13889 | that made the marker move up or down (in line number terms). Ask | |
13890 | the target for info about the marker with the string id as we knew | |
13891 | it. If found, update line number and address in the matching | |
13892 | static tracepoint. This will get confused if there's more than one | |
13893 | marker with the same ID (possible in UST, although unadvised | |
13894 | precisely because it confuses tools). */ | |
13895 | ||
13896 | static struct symtab_and_line | |
13897 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13898 | { | |
d9b3f62e | 13899 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13900 | struct static_tracepoint_marker marker; |
13901 | CORE_ADDR pc; | |
0fb4aa4b PA |
13902 | |
13903 | pc = sal.pc; | |
13904 | if (sal.line) | |
13905 | find_line_pc (sal.symtab, sal.line, &pc); | |
13906 | ||
13907 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13908 | { | |
d9b3f62e | 13909 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13910 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13911 | b->number, | |
d9b3f62e | 13912 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13913 | |
d9b3f62e PA |
13914 | xfree (tp->static_trace_marker_id); |
13915 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13916 | release_static_tracepoint_marker (&marker); |
13917 | ||
13918 | return sal; | |
13919 | } | |
13920 | ||
13921 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13922 | by string ID. */ | |
13923 | if (!sal.explicit_pc | |
13924 | && sal.line != 0 | |
13925 | && sal.symtab != NULL | |
d9b3f62e | 13926 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13927 | { |
13928 | VEC(static_tracepoint_marker_p) *markers; | |
13929 | ||
13930 | markers | |
d9b3f62e | 13931 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13932 | |
13933 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13934 | { | |
f00aae0f | 13935 | char *p, *tmp; |
80e1d417 | 13936 | struct symtab_and_line sal2; |
0fb4aa4b | 13937 | struct symbol *sym; |
80e1d417 | 13938 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13939 | struct ui_out *uiout = current_uiout; |
f00aae0f | 13940 | struct cleanup *cleanup; |
0fb4aa4b | 13941 | |
80e1d417 | 13942 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13943 | |
d9b3f62e | 13944 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13945 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13946 | |
13947 | warning (_("marker for static tracepoint %d (%s) not " | |
13948 | "found at previous line number"), | |
d9b3f62e | 13949 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13950 | |
80e1d417 | 13951 | init_sal (&sal2); |
0fb4aa4b | 13952 | |
80e1d417 | 13953 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13954 | |
80e1d417 AS |
13955 | sal2 = find_pc_line (tpmarker->address, 0); |
13956 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13957 | ui_out_text (uiout, "Now in "); |
13958 | if (sym) | |
13959 | { | |
13960 | ui_out_field_string (uiout, "func", | |
13961 | SYMBOL_PRINT_NAME (sym)); | |
13962 | ui_out_text (uiout, " at "); | |
13963 | } | |
05cba821 JK |
13964 | ui_out_field_string (uiout, "file", |
13965 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
13966 | ui_out_text (uiout, ":"); |
13967 | ||
13968 | if (ui_out_is_mi_like_p (uiout)) | |
13969 | { | |
0b0865da | 13970 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13971 | |
f35a17b5 | 13972 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
13973 | } |
13974 | ||
80e1d417 | 13975 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13976 | ui_out_text (uiout, "\n"); |
13977 | ||
80e1d417 | 13978 | b->loc->line_number = sal2.line; |
2f202fde | 13979 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13980 | |
f00aae0f KS |
13981 | delete_event_location (b->location); |
13982 | p = tmp = xstrprintf ("%s:%d", | |
13983 | symtab_to_filename_for_display (sal2.symtab), | |
13984 | b->loc->line_number); | |
13985 | cleanup = make_cleanup (xfree, tmp); | |
13986 | b->location = new_linespec_location (&tmp); | |
13987 | do_cleanups (cleanup); | |
0fb4aa4b PA |
13988 | |
13989 | /* Might be nice to check if function changed, and warn if | |
13990 | so. */ | |
13991 | ||
80e1d417 | 13992 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13993 | } |
13994 | } | |
13995 | return sal; | |
13996 | } | |
13997 | ||
8d3788bd VP |
13998 | /* Returns 1 iff locations A and B are sufficiently same that |
13999 | we don't need to report breakpoint as changed. */ | |
14000 | ||
14001 | static int | |
14002 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
14003 | { | |
14004 | while (a && b) | |
14005 | { | |
14006 | if (a->address != b->address) | |
14007 | return 0; | |
14008 | ||
14009 | if (a->shlib_disabled != b->shlib_disabled) | |
14010 | return 0; | |
14011 | ||
14012 | if (a->enabled != b->enabled) | |
14013 | return 0; | |
14014 | ||
14015 | a = a->next; | |
14016 | b = b->next; | |
14017 | } | |
14018 | ||
14019 | if ((a == NULL) != (b == NULL)) | |
14020 | return 0; | |
14021 | ||
14022 | return 1; | |
14023 | } | |
14024 | ||
f1310107 TJB |
14025 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
14026 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
14027 | a ranged breakpoint. */ | |
14028 | ||
0e30163f | 14029 | void |
0d381245 | 14030 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
14031 | struct symtabs_and_lines sals, |
14032 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
14033 | { |
14034 | int i; | |
0d381245 VP |
14035 | struct bp_location *existing_locations = b->loc; |
14036 | ||
f8eba3c6 TT |
14037 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
14038 | { | |
14039 | /* Ranged breakpoints have only one start location and one end | |
14040 | location. */ | |
14041 | b->enable_state = bp_disabled; | |
44702360 | 14042 | update_global_location_list (UGLL_MAY_INSERT); |
f8eba3c6 TT |
14043 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
14044 | "multiple locations found\n"), | |
14045 | b->number); | |
14046 | return; | |
14047 | } | |
f1310107 | 14048 | |
4a64f543 MS |
14049 | /* If there's no new locations, and all existing locations are |
14050 | pending, don't do anything. This optimizes the common case where | |
14051 | all locations are in the same shared library, that was unloaded. | |
14052 | We'd like to retain the location, so that when the library is | |
14053 | loaded again, we don't loose the enabled/disabled status of the | |
14054 | individual locations. */ | |
0d381245 | 14055 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
14056 | return; |
14057 | ||
fe3f5fa8 VP |
14058 | b->loc = NULL; |
14059 | ||
0d381245 | 14060 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 14061 | { |
f8eba3c6 TT |
14062 | struct bp_location *new_loc; |
14063 | ||
14064 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
14065 | ||
14066 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 14067 | |
0d381245 VP |
14068 | /* Reparse conditions, they might contain references to the |
14069 | old symtab. */ | |
14070 | if (b->cond_string != NULL) | |
14071 | { | |
bbc13ae3 | 14072 | const char *s; |
fe3f5fa8 | 14073 | |
0d381245 | 14074 | s = b->cond_string; |
492d29ea | 14075 | TRY |
0d381245 | 14076 | { |
1bb9788d TT |
14077 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
14078 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
14079 | 0); |
14080 | } | |
492d29ea | 14081 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 14082 | { |
3e43a32a MS |
14083 | warning (_("failed to reevaluate condition " |
14084 | "for breakpoint %d: %s"), | |
0d381245 VP |
14085 | b->number, e.message); |
14086 | new_loc->enabled = 0; | |
14087 | } | |
492d29ea | 14088 | END_CATCH |
0d381245 | 14089 | } |
fe3f5fa8 | 14090 | |
f1310107 TJB |
14091 | if (sals_end.nelts) |
14092 | { | |
14093 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
14094 | ||
14095 | new_loc->length = end - sals.sals[0].pc + 1; | |
14096 | } | |
0d381245 | 14097 | } |
fe3f5fa8 | 14098 | |
4a64f543 MS |
14099 | /* If possible, carry over 'disable' status from existing |
14100 | breakpoints. */ | |
0d381245 VP |
14101 | { |
14102 | struct bp_location *e = existing_locations; | |
776592bf DE |
14103 | /* If there are multiple breakpoints with the same function name, |
14104 | e.g. for inline functions, comparing function names won't work. | |
14105 | Instead compare pc addresses; this is just a heuristic as things | |
14106 | may have moved, but in practice it gives the correct answer | |
14107 | often enough until a better solution is found. */ | |
14108 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14109 | ||
0d381245 VP |
14110 | for (; e; e = e->next) |
14111 | { | |
14112 | if (!e->enabled && e->function_name) | |
14113 | { | |
14114 | struct bp_location *l = b->loc; | |
776592bf DE |
14115 | if (have_ambiguous_names) |
14116 | { | |
14117 | for (; l; l = l->next) | |
f1310107 | 14118 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14119 | { |
14120 | l->enabled = 0; | |
14121 | break; | |
14122 | } | |
14123 | } | |
14124 | else | |
14125 | { | |
14126 | for (; l; l = l->next) | |
14127 | if (l->function_name | |
14128 | && strcmp (e->function_name, l->function_name) == 0) | |
14129 | { | |
14130 | l->enabled = 0; | |
14131 | break; | |
14132 | } | |
14133 | } | |
0d381245 VP |
14134 | } |
14135 | } | |
14136 | } | |
fe3f5fa8 | 14137 | |
8d3788bd VP |
14138 | if (!locations_are_equal (existing_locations, b->loc)) |
14139 | observer_notify_breakpoint_modified (b); | |
14140 | ||
44702360 | 14141 | update_global_location_list (UGLL_MAY_INSERT); |
fe3f5fa8 VP |
14142 | } |
14143 | ||
f00aae0f | 14144 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
14145 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
14146 | ||
14147 | static struct symtabs_and_lines | |
f00aae0f KS |
14148 | location_to_sals (struct breakpoint *b, struct event_location *location, |
14149 | int *found) | |
ef23e705 | 14150 | { |
02d20e4a | 14151 | struct symtabs_and_lines sals = {0}; |
492d29ea | 14152 | struct gdb_exception exception = exception_none; |
ef23e705 | 14153 | |
983af33b | 14154 | gdb_assert (b->ops != NULL); |
ef23e705 | 14155 | |
492d29ea | 14156 | TRY |
ef23e705 | 14157 | { |
f00aae0f | 14158 | b->ops->decode_location (b, location, &sals); |
ef23e705 | 14159 | } |
492d29ea | 14160 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
14161 | { |
14162 | int not_found_and_ok = 0; | |
492d29ea PA |
14163 | |
14164 | exception = e; | |
14165 | ||
ef23e705 TJB |
14166 | /* For pending breakpoints, it's expected that parsing will |
14167 | fail until the right shared library is loaded. User has | |
14168 | already told to create pending breakpoints and don't need | |
14169 | extra messages. If breakpoint is in bp_shlib_disabled | |
14170 | state, then user already saw the message about that | |
14171 | breakpoint being disabled, and don't want to see more | |
14172 | errors. */ | |
58438ac1 | 14173 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14174 | && (b->condition_not_parsed |
14175 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14176 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14177 | || b->enable_state == bp_disabled)) |
14178 | not_found_and_ok = 1; | |
14179 | ||
14180 | if (!not_found_and_ok) | |
14181 | { | |
14182 | /* We surely don't want to warn about the same breakpoint | |
14183 | 10 times. One solution, implemented here, is disable | |
14184 | the breakpoint on error. Another solution would be to | |
14185 | have separate 'warning emitted' flag. Since this | |
14186 | happens only when a binary has changed, I don't know | |
14187 | which approach is better. */ | |
14188 | b->enable_state = bp_disabled; | |
14189 | throw_exception (e); | |
14190 | } | |
14191 | } | |
492d29ea | 14192 | END_CATCH |
ef23e705 | 14193 | |
492d29ea | 14194 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 14195 | { |
f8eba3c6 | 14196 | int i; |
ef23e705 | 14197 | |
f8eba3c6 TT |
14198 | for (i = 0; i < sals.nelts; ++i) |
14199 | resolve_sal_pc (&sals.sals[i]); | |
f00aae0f | 14200 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 14201 | { |
ed1d1739 KS |
14202 | char *cond_string, *extra_string; |
14203 | int thread, task; | |
ef23e705 | 14204 | |
f00aae0f | 14205 | find_condition_and_thread (b->extra_string, sals.sals[0].pc, |
e7e0cddf SS |
14206 | &cond_string, &thread, &task, |
14207 | &extra_string); | |
f00aae0f | 14208 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
14209 | if (cond_string) |
14210 | b->cond_string = cond_string; | |
14211 | b->thread = thread; | |
14212 | b->task = task; | |
e7e0cddf | 14213 | if (extra_string) |
f00aae0f KS |
14214 | { |
14215 | xfree (b->extra_string); | |
14216 | b->extra_string = extra_string; | |
14217 | } | |
ef23e705 TJB |
14218 | b->condition_not_parsed = 0; |
14219 | } | |
14220 | ||
983af33b | 14221 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14222 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14223 | |
58438ac1 TT |
14224 | *found = 1; |
14225 | } | |
14226 | else | |
14227 | *found = 0; | |
ef23e705 TJB |
14228 | |
14229 | return sals; | |
14230 | } | |
14231 | ||
348d480f PA |
14232 | /* The default re_set method, for typical hardware or software |
14233 | breakpoints. Reevaluate the breakpoint and recreate its | |
14234 | locations. */ | |
14235 | ||
14236 | static void | |
28010a5d | 14237 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14238 | { |
14239 | int found; | |
f1310107 | 14240 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14241 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14242 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 | 14243 | |
f00aae0f | 14244 | sals = location_to_sals (b, b->location, &found); |
ef23e705 TJB |
14245 | if (found) |
14246 | { | |
14247 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14248 | expanded = sals; |
ef23e705 TJB |
14249 | } |
14250 | ||
f00aae0f | 14251 | if (b->location_range_end != NULL) |
f1310107 | 14252 | { |
f00aae0f | 14253 | sals_end = location_to_sals (b, b->location_range_end, &found); |
f1310107 TJB |
14254 | if (found) |
14255 | { | |
14256 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14257 | expanded_end = sals_end; |
f1310107 TJB |
14258 | } |
14259 | } | |
14260 | ||
14261 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14262 | } |
14263 | ||
983af33b SDJ |
14264 | /* Default method for creating SALs from an address string. It basically |
14265 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14266 | ||
14267 | static void | |
f00aae0f KS |
14268 | create_sals_from_location_default (const struct event_location *location, |
14269 | struct linespec_result *canonical, | |
14270 | enum bptype type_wanted) | |
983af33b | 14271 | { |
f00aae0f | 14272 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
14273 | } |
14274 | ||
14275 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14276 | function for the `create_breakpoints_sal' method of | |
14277 | breakpoint_ops. */ | |
14278 | ||
14279 | static void | |
14280 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14281 | struct linespec_result *canonical, | |
983af33b | 14282 | char *cond_string, |
e7e0cddf | 14283 | char *extra_string, |
983af33b SDJ |
14284 | enum bptype type_wanted, |
14285 | enum bpdisp disposition, | |
14286 | int thread, | |
14287 | int task, int ignore_count, | |
14288 | const struct breakpoint_ops *ops, | |
14289 | int from_tty, int enabled, | |
44f238bb | 14290 | int internal, unsigned flags) |
983af33b SDJ |
14291 | { |
14292 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14293 | extra_string, |
983af33b SDJ |
14294 | type_wanted, disposition, |
14295 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14296 | enabled, internal, flags); |
983af33b SDJ |
14297 | } |
14298 | ||
14299 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 14300 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b SDJ |
14301 | |
14302 | static void | |
f00aae0f KS |
14303 | decode_location_default (struct breakpoint *b, |
14304 | const struct event_location *location, | |
983af33b SDJ |
14305 | struct symtabs_and_lines *sals) |
14306 | { | |
14307 | struct linespec_result canonical; | |
14308 | ||
14309 | init_linespec_result (&canonical); | |
f00aae0f | 14310 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, |
983af33b SDJ |
14311 | (struct symtab *) NULL, 0, |
14312 | &canonical, multiple_symbols_all, | |
14313 | b->filter); | |
14314 | ||
14315 | /* We should get 0 or 1 resulting SALs. */ | |
14316 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14317 | ||
14318 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14319 | { | |
14320 | struct linespec_sals *lsal; | |
14321 | ||
14322 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14323 | *sals = lsal->sals; | |
14324 | /* Arrange it so the destructor does not free the | |
14325 | contents. */ | |
14326 | lsal->sals.sals = NULL; | |
14327 | } | |
14328 | ||
14329 | destroy_linespec_result (&canonical); | |
14330 | } | |
14331 | ||
28010a5d PA |
14332 | /* Prepare the global context for a re-set of breakpoint B. */ |
14333 | ||
14334 | static struct cleanup * | |
14335 | prepare_re_set_context (struct breakpoint *b) | |
14336 | { | |
14337 | struct cleanup *cleanups; | |
14338 | ||
14339 | input_radix = b->input_radix; | |
14340 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14341 | if (b->pspace != NULL) |
14342 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14343 | set_language (b->language); |
14344 | ||
14345 | return cleanups; | |
ef23e705 TJB |
14346 | } |
14347 | ||
c906108c SS |
14348 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14349 | The value we return ends up being the return value from catch_errors. | |
14350 | Unused in this case. */ | |
14351 | ||
14352 | static int | |
4efb68b1 | 14353 | breakpoint_re_set_one (void *bint) |
c906108c | 14354 | { |
4a64f543 | 14355 | /* Get past catch_errs. */ |
53a5351d | 14356 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14357 | struct cleanup *cleanups; |
c906108c | 14358 | |
348d480f PA |
14359 | cleanups = prepare_re_set_context (b); |
14360 | b->ops->re_set (b); | |
14361 | do_cleanups (cleanups); | |
c906108c SS |
14362 | return 0; |
14363 | } | |
14364 | ||
69de3c6a | 14365 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14366 | void |
69de3c6a | 14367 | breakpoint_re_set (void) |
c906108c | 14368 | { |
35df4500 | 14369 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14370 | enum language save_language; |
14371 | int save_input_radix; | |
6c95b8df | 14372 | struct cleanup *old_chain; |
c5aa993b | 14373 | |
c906108c SS |
14374 | save_language = current_language->la_language; |
14375 | save_input_radix = input_radix; | |
6c95b8df PA |
14376 | old_chain = save_current_program_space (); |
14377 | ||
35df4500 | 14378 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14379 | { |
4a64f543 | 14380 | /* Format possible error msg. */ |
fe3f5fa8 | 14381 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14382 | b->number); |
14383 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14384 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14385 | do_cleanups (cleanups); |
c5aa993b | 14386 | } |
c906108c SS |
14387 | set_language (save_language); |
14388 | input_radix = save_input_radix; | |
e62c965a | 14389 | |
0756c555 | 14390 | jit_breakpoint_re_set (); |
4efc6507 | 14391 | |
6c95b8df PA |
14392 | do_cleanups (old_chain); |
14393 | ||
af02033e PP |
14394 | create_overlay_event_breakpoint (); |
14395 | create_longjmp_master_breakpoint (); | |
14396 | create_std_terminate_master_breakpoint (); | |
186c406b | 14397 | create_exception_master_breakpoint (); |
c906108c SS |
14398 | } |
14399 | \f | |
c906108c SS |
14400 | /* Reset the thread number of this breakpoint: |
14401 | ||
14402 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14403 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14404 | void |
fba45db2 | 14405 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14406 | { |
14407 | if (b->thread != -1) | |
14408 | { | |
39f77062 KB |
14409 | if (in_thread_list (inferior_ptid)) |
14410 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14411 | |
14412 | /* We're being called after following a fork. The new fork is | |
14413 | selected as current, and unless this was a vfork will have a | |
14414 | different program space from the original thread. Reset that | |
14415 | as well. */ | |
14416 | b->loc->pspace = current_program_space; | |
c906108c SS |
14417 | } |
14418 | } | |
14419 | ||
03ac34d5 MS |
14420 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14421 | If from_tty is nonzero, it prints a message to that effect, | |
14422 | which ends with a period (no newline). */ | |
14423 | ||
c906108c | 14424 | void |
fba45db2 | 14425 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14426 | { |
52f0bd74 | 14427 | struct breakpoint *b; |
c906108c SS |
14428 | |
14429 | if (count < 0) | |
14430 | count = 0; | |
14431 | ||
14432 | ALL_BREAKPOINTS (b) | |
14433 | if (b->number == bptnum) | |
c5aa993b | 14434 | { |
d77f58be SS |
14435 | if (is_tracepoint (b)) |
14436 | { | |
14437 | if (from_tty && count != 0) | |
14438 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14439 | bptnum); | |
14440 | return; | |
14441 | } | |
14442 | ||
c5aa993b | 14443 | b->ignore_count = count; |
221ea385 KS |
14444 | if (from_tty) |
14445 | { | |
14446 | if (count == 0) | |
3e43a32a MS |
14447 | printf_filtered (_("Will stop next time " |
14448 | "breakpoint %d is reached."), | |
221ea385 KS |
14449 | bptnum); |
14450 | else if (count == 1) | |
a3f17187 | 14451 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14452 | bptnum); |
14453 | else | |
3e43a32a MS |
14454 | printf_filtered (_("Will ignore next %d " |
14455 | "crossings of breakpoint %d."), | |
221ea385 KS |
14456 | count, bptnum); |
14457 | } | |
8d3788bd | 14458 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14459 | return; |
14460 | } | |
c906108c | 14461 | |
8a3fe4f8 | 14462 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14463 | } |
14464 | ||
c906108c SS |
14465 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14466 | ||
14467 | static void | |
fba45db2 | 14468 | ignore_command (char *args, int from_tty) |
c906108c SS |
14469 | { |
14470 | char *p = args; | |
52f0bd74 | 14471 | int num; |
c906108c SS |
14472 | |
14473 | if (p == 0) | |
e2e0b3e5 | 14474 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14475 | |
c906108c | 14476 | num = get_number (&p); |
5c44784c | 14477 | if (num == 0) |
8a3fe4f8 | 14478 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14479 | if (*p == 0) |
8a3fe4f8 | 14480 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14481 | |
14482 | set_ignore_count (num, | |
14483 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14484 | from_tty); | |
221ea385 KS |
14485 | if (from_tty) |
14486 | printf_filtered ("\n"); | |
c906108c SS |
14487 | } |
14488 | \f | |
14489 | /* Call FUNCTION on each of the breakpoints | |
14490 | whose numbers are given in ARGS. */ | |
14491 | ||
14492 | static void | |
95a42b64 TT |
14493 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14494 | void *), | |
14495 | void *data) | |
c906108c | 14496 | { |
52f0bd74 AC |
14497 | int num; |
14498 | struct breakpoint *b, *tmp; | |
11cf8741 | 14499 | int match; |
197f0a60 | 14500 | struct get_number_or_range_state state; |
c906108c | 14501 | |
b9d61307 | 14502 | if (args == 0 || *args == '\0') |
e2e0b3e5 | 14503 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14504 | |
197f0a60 TT |
14505 | init_number_or_range (&state, args); |
14506 | ||
14507 | while (!state.finished) | |
c906108c | 14508 | { |
e799154c | 14509 | const char *p = state.string; |
197f0a60 | 14510 | |
11cf8741 | 14511 | match = 0; |
c5aa993b | 14512 | |
197f0a60 | 14513 | num = get_number_or_range (&state); |
5c44784c | 14514 | if (num == 0) |
c5aa993b | 14515 | { |
8a3fe4f8 | 14516 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14517 | } |
14518 | else | |
14519 | { | |
14520 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14521 | if (b->number == num) | |
14522 | { | |
11cf8741 | 14523 | match = 1; |
cdac0397 | 14524 | function (b, data); |
11cf8741 | 14525 | break; |
5c44784c | 14526 | } |
11cf8741 | 14527 | if (match == 0) |
a3f17187 | 14528 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14529 | } |
c906108c SS |
14530 | } |
14531 | } | |
14532 | ||
0d381245 VP |
14533 | static struct bp_location * |
14534 | find_location_by_number (char *number) | |
14535 | { | |
14536 | char *dot = strchr (number, '.'); | |
14537 | char *p1; | |
14538 | int bp_num; | |
14539 | int loc_num; | |
14540 | struct breakpoint *b; | |
14541 | struct bp_location *loc; | |
14542 | ||
14543 | *dot = '\0'; | |
14544 | ||
14545 | p1 = number; | |
197f0a60 | 14546 | bp_num = get_number (&p1); |
0d381245 VP |
14547 | if (bp_num == 0) |
14548 | error (_("Bad breakpoint number '%s'"), number); | |
14549 | ||
14550 | ALL_BREAKPOINTS (b) | |
14551 | if (b->number == bp_num) | |
14552 | { | |
14553 | break; | |
14554 | } | |
14555 | ||
14556 | if (!b || b->number != bp_num) | |
14557 | error (_("Bad breakpoint number '%s'"), number); | |
14558 | ||
14559 | p1 = dot+1; | |
197f0a60 | 14560 | loc_num = get_number (&p1); |
0d381245 VP |
14561 | if (loc_num == 0) |
14562 | error (_("Bad breakpoint location number '%s'"), number); | |
14563 | ||
14564 | --loc_num; | |
14565 | loc = b->loc; | |
14566 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14567 | ; | |
14568 | if (!loc) | |
14569 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14570 | ||
14571 | return loc; | |
14572 | } | |
14573 | ||
14574 | ||
1900040c MS |
14575 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14576 | If from_tty is nonzero, it prints a message to that effect, | |
14577 | which ends with a period (no newline). */ | |
14578 | ||
c906108c | 14579 | void |
fba45db2 | 14580 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14581 | { |
14582 | /* Never disable a watchpoint scope breakpoint; we want to | |
14583 | hit them when we leave scope so we can delete both the | |
14584 | watchpoint and its scope breakpoint at that time. */ | |
14585 | if (bpt->type == bp_watchpoint_scope) | |
14586 | return; | |
14587 | ||
b5de0fa7 | 14588 | bpt->enable_state = bp_disabled; |
c906108c | 14589 | |
b775012e LM |
14590 | /* Mark breakpoint locations modified. */ |
14591 | mark_breakpoint_modified (bpt); | |
14592 | ||
d248b706 KY |
14593 | if (target_supports_enable_disable_tracepoint () |
14594 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14595 | { | |
14596 | struct bp_location *location; | |
14597 | ||
14598 | for (location = bpt->loc; location; location = location->next) | |
14599 | target_disable_tracepoint (location); | |
14600 | } | |
14601 | ||
44702360 | 14602 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14603 | |
8d3788bd | 14604 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14605 | } |
14606 | ||
51be5b68 PA |
14607 | /* A callback for iterate_over_related_breakpoints. */ |
14608 | ||
14609 | static void | |
14610 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14611 | { | |
14612 | disable_breakpoint (b); | |
14613 | } | |
14614 | ||
95a42b64 TT |
14615 | /* A callback for map_breakpoint_numbers that calls |
14616 | disable_breakpoint. */ | |
14617 | ||
14618 | static void | |
14619 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14620 | { | |
51be5b68 | 14621 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14622 | } |
14623 | ||
c906108c | 14624 | static void |
fba45db2 | 14625 | disable_command (char *args, int from_tty) |
c906108c | 14626 | { |
c906108c | 14627 | if (args == 0) |
46c6471b PA |
14628 | { |
14629 | struct breakpoint *bpt; | |
14630 | ||
14631 | ALL_BREAKPOINTS (bpt) | |
14632 | if (user_breakpoint_p (bpt)) | |
14633 | disable_breakpoint (bpt); | |
14634 | } | |
9eaabc75 | 14635 | else |
0d381245 | 14636 | { |
9eaabc75 MW |
14637 | char *num = extract_arg (&args); |
14638 | ||
14639 | while (num) | |
d248b706 | 14640 | { |
9eaabc75 | 14641 | if (strchr (num, '.')) |
b775012e | 14642 | { |
9eaabc75 MW |
14643 | struct bp_location *loc = find_location_by_number (num); |
14644 | ||
14645 | if (loc) | |
14646 | { | |
14647 | if (loc->enabled) | |
14648 | { | |
14649 | loc->enabled = 0; | |
14650 | mark_breakpoint_location_modified (loc); | |
14651 | } | |
14652 | if (target_supports_enable_disable_tracepoint () | |
14653 | && current_trace_status ()->running && loc->owner | |
14654 | && is_tracepoint (loc->owner)) | |
14655 | target_disable_tracepoint (loc); | |
14656 | } | |
44702360 | 14657 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 14658 | } |
9eaabc75 MW |
14659 | else |
14660 | map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL); | |
14661 | num = extract_arg (&args); | |
d248b706 | 14662 | } |
0d381245 | 14663 | } |
c906108c SS |
14664 | } |
14665 | ||
14666 | static void | |
816338b5 SS |
14667 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14668 | int count) | |
c906108c | 14669 | { |
afe38095 | 14670 | int target_resources_ok; |
c906108c SS |
14671 | |
14672 | if (bpt->type == bp_hardware_breakpoint) | |
14673 | { | |
14674 | int i; | |
c5aa993b | 14675 | i = hw_breakpoint_used_count (); |
53a5351d | 14676 | target_resources_ok = |
d92524f1 | 14677 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14678 | i + 1, 0); |
c906108c | 14679 | if (target_resources_ok == 0) |
8a3fe4f8 | 14680 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14681 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14682 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14683 | } |
14684 | ||
cc60f2e3 | 14685 | if (is_watchpoint (bpt)) |
c906108c | 14686 | { |
d07205c2 | 14687 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14688 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14689 | |
492d29ea | 14690 | TRY |
c906108c | 14691 | { |
3a5c3e22 PA |
14692 | struct watchpoint *w = (struct watchpoint *) bpt; |
14693 | ||
1e718ff1 TJB |
14694 | orig_enable_state = bpt->enable_state; |
14695 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14696 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14697 | } |
492d29ea | 14698 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14699 | { |
1e718ff1 | 14700 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14701 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14702 | bpt->number); | |
14703 | return; | |
c5aa993b | 14704 | } |
492d29ea | 14705 | END_CATCH |
c906108c | 14706 | } |
0101ce28 | 14707 | |
b775012e LM |
14708 | bpt->enable_state = bp_enabled; |
14709 | ||
14710 | /* Mark breakpoint locations modified. */ | |
14711 | mark_breakpoint_modified (bpt); | |
14712 | ||
d248b706 KY |
14713 | if (target_supports_enable_disable_tracepoint () |
14714 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14715 | { | |
14716 | struct bp_location *location; | |
14717 | ||
14718 | for (location = bpt->loc; location; location = location->next) | |
14719 | target_enable_tracepoint (location); | |
14720 | } | |
14721 | ||
b4c291bb | 14722 | bpt->disposition = disposition; |
816338b5 | 14723 | bpt->enable_count = count; |
44702360 | 14724 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14725 | |
8d3788bd | 14726 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14727 | } |
14728 | ||
fe3f5fa8 | 14729 | |
c906108c | 14730 | void |
fba45db2 | 14731 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14732 | { |
816338b5 | 14733 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14734 | } |
14735 | ||
14736 | static void | |
14737 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14738 | { | |
14739 | enable_breakpoint (bpt); | |
c906108c SS |
14740 | } |
14741 | ||
95a42b64 TT |
14742 | /* A callback for map_breakpoint_numbers that calls |
14743 | enable_breakpoint. */ | |
14744 | ||
14745 | static void | |
14746 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14747 | { | |
51be5b68 | 14748 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14749 | } |
14750 | ||
c906108c SS |
14751 | /* The enable command enables the specified breakpoints (or all defined |
14752 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14753 | in stopping the inferior. */ |
c906108c | 14754 | |
c906108c | 14755 | static void |
fba45db2 | 14756 | enable_command (char *args, int from_tty) |
c906108c | 14757 | { |
c906108c | 14758 | if (args == 0) |
46c6471b PA |
14759 | { |
14760 | struct breakpoint *bpt; | |
14761 | ||
14762 | ALL_BREAKPOINTS (bpt) | |
14763 | if (user_breakpoint_p (bpt)) | |
14764 | enable_breakpoint (bpt); | |
14765 | } | |
9eaabc75 | 14766 | else |
0d381245 | 14767 | { |
9eaabc75 MW |
14768 | char *num = extract_arg (&args); |
14769 | ||
14770 | while (num) | |
d248b706 | 14771 | { |
9eaabc75 | 14772 | if (strchr (num, '.')) |
b775012e | 14773 | { |
9eaabc75 MW |
14774 | struct bp_location *loc = find_location_by_number (num); |
14775 | ||
14776 | if (loc) | |
14777 | { | |
14778 | if (!loc->enabled) | |
14779 | { | |
14780 | loc->enabled = 1; | |
14781 | mark_breakpoint_location_modified (loc); | |
14782 | } | |
14783 | if (target_supports_enable_disable_tracepoint () | |
14784 | && current_trace_status ()->running && loc->owner | |
14785 | && is_tracepoint (loc->owner)) | |
14786 | target_enable_tracepoint (loc); | |
14787 | } | |
44702360 | 14788 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 14789 | } |
9eaabc75 MW |
14790 | else |
14791 | map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL); | |
14792 | num = extract_arg (&args); | |
d248b706 | 14793 | } |
0d381245 | 14794 | } |
c906108c SS |
14795 | } |
14796 | ||
816338b5 SS |
14797 | /* This struct packages up disposition data for application to multiple |
14798 | breakpoints. */ | |
14799 | ||
14800 | struct disp_data | |
14801 | { | |
14802 | enum bpdisp disp; | |
14803 | int count; | |
14804 | }; | |
14805 | ||
c906108c | 14806 | static void |
51be5b68 PA |
14807 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14808 | { | |
816338b5 | 14809 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14810 | |
816338b5 | 14811 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14812 | } |
14813 | ||
14814 | static void | |
14815 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14816 | { |
816338b5 | 14817 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14818 | |
14819 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14820 | } |
14821 | ||
c906108c | 14822 | static void |
fba45db2 | 14823 | enable_once_command (char *args, int from_tty) |
c906108c | 14824 | { |
51be5b68 | 14825 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14826 | } |
14827 | ||
816338b5 SS |
14828 | static void |
14829 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14830 | { | |
14831 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14832 | ||
14833 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14834 | } | |
14835 | ||
14836 | static void | |
14837 | enable_count_command (char *args, int from_tty) | |
14838 | { | |
b9d61307 SM |
14839 | int count; |
14840 | ||
14841 | if (args == NULL) | |
14842 | error_no_arg (_("hit count")); | |
14843 | ||
14844 | count = get_number (&args); | |
816338b5 SS |
14845 | |
14846 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14847 | } | |
14848 | ||
c906108c | 14849 | static void |
51be5b68 | 14850 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14851 | { |
816338b5 | 14852 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14853 | |
14854 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14855 | } |
14856 | ||
c906108c | 14857 | static void |
fba45db2 | 14858 | enable_delete_command (char *args, int from_tty) |
c906108c | 14859 | { |
51be5b68 | 14860 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14861 | } |
14862 | \f | |
fa8d40ab JJ |
14863 | static void |
14864 | set_breakpoint_cmd (char *args, int from_tty) | |
14865 | { | |
14866 | } | |
14867 | ||
14868 | static void | |
14869 | show_breakpoint_cmd (char *args, int from_tty) | |
14870 | { | |
14871 | } | |
14872 | ||
1f3b5d1b PP |
14873 | /* Invalidate last known value of any hardware watchpoint if |
14874 | the memory which that value represents has been written to by | |
14875 | GDB itself. */ | |
14876 | ||
14877 | static void | |
8de0566d YQ |
14878 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14879 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14880 | const bfd_byte *data) |
14881 | { | |
14882 | struct breakpoint *bp; | |
14883 | ||
14884 | ALL_BREAKPOINTS (bp) | |
14885 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14886 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14887 | { |
3a5c3e22 | 14888 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14889 | |
3a5c3e22 PA |
14890 | if (wp->val_valid && wp->val) |
14891 | { | |
14892 | struct bp_location *loc; | |
14893 | ||
14894 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14895 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14896 | && loc->address + loc->length > addr | |
14897 | && addr + len > loc->address) | |
14898 | { | |
14899 | value_free (wp->val); | |
14900 | wp->val = NULL; | |
14901 | wp->val_valid = 0; | |
14902 | } | |
14903 | } | |
1f3b5d1b PP |
14904 | } |
14905 | } | |
14906 | ||
8181d85f DJ |
14907 | /* Create and insert a breakpoint for software single step. */ |
14908 | ||
14909 | void | |
6c95b8df | 14910 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14911 | struct address_space *aspace, |
14912 | CORE_ADDR next_pc) | |
8181d85f | 14913 | { |
7c16b83e PA |
14914 | struct thread_info *tp = inferior_thread (); |
14915 | struct symtab_and_line sal; | |
14916 | CORE_ADDR pc = next_pc; | |
8181d85f | 14917 | |
34b7e8a6 PA |
14918 | if (tp->control.single_step_breakpoints == NULL) |
14919 | { | |
14920 | tp->control.single_step_breakpoints | |
14921 | = new_single_step_breakpoint (tp->num, gdbarch); | |
14922 | } | |
8181d85f | 14923 | |
7c16b83e PA |
14924 | sal = find_pc_line (pc, 0); |
14925 | sal.pc = pc; | |
14926 | sal.section = find_pc_overlay (pc); | |
14927 | sal.explicit_pc = 1; | |
34b7e8a6 | 14928 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14929 | |
7c16b83e | 14930 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14931 | } |
14932 | ||
34b7e8a6 | 14933 | /* See breakpoint.h. */ |
f02253f1 HZ |
14934 | |
14935 | int | |
7c16b83e PA |
14936 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
14937 | struct address_space *aspace, | |
14938 | CORE_ADDR pc) | |
1aafd4da | 14939 | { |
7c16b83e | 14940 | struct bp_location *loc; |
1aafd4da | 14941 | |
7c16b83e PA |
14942 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14943 | if (loc->inserted | |
14944 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14945 | return 1; | |
1aafd4da | 14946 | |
7c16b83e | 14947 | return 0; |
ef370185 JB |
14948 | } |
14949 | ||
14950 | /* Check whether a software single-step breakpoint is inserted at | |
14951 | PC. */ | |
14952 | ||
14953 | int | |
14954 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, | |
14955 | CORE_ADDR pc) | |
14956 | { | |
34b7e8a6 PA |
14957 | struct breakpoint *bpt; |
14958 | ||
14959 | ALL_BREAKPOINTS (bpt) | |
14960 | { | |
14961 | if (bpt->type == bp_single_step | |
14962 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14963 | return 1; | |
14964 | } | |
14965 | return 0; | |
1aafd4da UW |
14966 | } |
14967 | ||
1042e4c0 SS |
14968 | /* Tracepoint-specific operations. */ |
14969 | ||
14970 | /* Set tracepoint count to NUM. */ | |
14971 | static void | |
14972 | set_tracepoint_count (int num) | |
14973 | { | |
14974 | tracepoint_count = num; | |
4fa62494 | 14975 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14976 | } |
14977 | ||
70221824 | 14978 | static void |
1042e4c0 SS |
14979 | trace_command (char *arg, int from_tty) |
14980 | { | |
55aa24fb | 14981 | struct breakpoint_ops *ops; |
f00aae0f KS |
14982 | struct event_location *location; |
14983 | struct cleanup *back_to; | |
55aa24fb | 14984 | |
f00aae0f KS |
14985 | location = string_to_event_location (&arg, current_language); |
14986 | back_to = make_cleanup_delete_event_location (location); | |
5b56227b KS |
14987 | if (location != NULL |
14988 | && event_location_type (location) == PROBE_LOCATION) | |
55aa24fb SDJ |
14989 | ops = &tracepoint_probe_breakpoint_ops; |
14990 | else | |
14991 | ops = &tracepoint_breakpoint_ops; | |
14992 | ||
558a9d82 | 14993 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
14994 | location, |
14995 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
14996 | 0 /* tempflag */, |
14997 | bp_tracepoint /* type_wanted */, | |
14998 | 0 /* Ignore count */, | |
14999 | pending_break_support, | |
15000 | ops, | |
15001 | from_tty, | |
15002 | 1 /* enabled */, | |
15003 | 0 /* internal */, 0); | |
f00aae0f | 15004 | do_cleanups (back_to); |
1042e4c0 SS |
15005 | } |
15006 | ||
70221824 | 15007 | static void |
7a697b8d SS |
15008 | ftrace_command (char *arg, int from_tty) |
15009 | { | |
f00aae0f KS |
15010 | struct event_location *location; |
15011 | struct cleanup *back_to; | |
15012 | ||
15013 | location = string_to_event_location (&arg, current_language); | |
15014 | back_to = make_cleanup_delete_event_location (location); | |
558a9d82 | 15015 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15016 | location, |
15017 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15018 | 0 /* tempflag */, |
15019 | bp_fast_tracepoint /* type_wanted */, | |
15020 | 0 /* Ignore count */, | |
15021 | pending_break_support, | |
15022 | &tracepoint_breakpoint_ops, | |
15023 | from_tty, | |
15024 | 1 /* enabled */, | |
15025 | 0 /* internal */, 0); | |
f00aae0f | 15026 | do_cleanups (back_to); |
0fb4aa4b PA |
15027 | } |
15028 | ||
15029 | /* strace command implementation. Creates a static tracepoint. */ | |
15030 | ||
70221824 | 15031 | static void |
0fb4aa4b PA |
15032 | strace_command (char *arg, int from_tty) |
15033 | { | |
983af33b | 15034 | struct breakpoint_ops *ops; |
f00aae0f KS |
15035 | struct event_location *location; |
15036 | struct cleanup *back_to; | |
983af33b SDJ |
15037 | |
15038 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15039 | or with a normal static tracepoint. */ | |
61012eef | 15040 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
15041 | { |
15042 | ops = &strace_marker_breakpoint_ops; | |
15043 | location = new_linespec_location (&arg); | |
15044 | } | |
983af33b | 15045 | else |
f00aae0f KS |
15046 | { |
15047 | ops = &tracepoint_breakpoint_ops; | |
15048 | location = string_to_event_location (&arg, current_language); | |
15049 | } | |
983af33b | 15050 | |
f00aae0f | 15051 | back_to = make_cleanup_delete_event_location (location); |
558a9d82 | 15052 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15053 | location, |
15054 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15055 | 0 /* tempflag */, |
15056 | bp_static_tracepoint /* type_wanted */, | |
15057 | 0 /* Ignore count */, | |
15058 | pending_break_support, | |
15059 | ops, | |
15060 | from_tty, | |
15061 | 1 /* enabled */, | |
15062 | 0 /* internal */, 0); | |
f00aae0f | 15063 | do_cleanups (back_to); |
7a697b8d SS |
15064 | } |
15065 | ||
409873ef SS |
15066 | /* Set up a fake reader function that gets command lines from a linked |
15067 | list that was acquired during tracepoint uploading. */ | |
15068 | ||
15069 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15070 | static int next_cmd; |
409873ef SS |
15071 | |
15072 | static char * | |
15073 | read_uploaded_action (void) | |
15074 | { | |
15075 | char *rslt; | |
15076 | ||
3149d8c1 | 15077 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15078 | |
3149d8c1 | 15079 | next_cmd++; |
409873ef SS |
15080 | |
15081 | return rslt; | |
15082 | } | |
15083 | ||
00bf0b85 SS |
15084 | /* Given information about a tracepoint as recorded on a target (which |
15085 | can be either a live system or a trace file), attempt to create an | |
15086 | equivalent GDB tracepoint. This is not a reliable process, since | |
15087 | the target does not necessarily have all the information used when | |
15088 | the tracepoint was originally defined. */ | |
15089 | ||
d9b3f62e | 15090 | struct tracepoint * |
00bf0b85 | 15091 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15092 | { |
409873ef | 15093 | char *addr_str, small_buf[100]; |
d9b3f62e | 15094 | struct tracepoint *tp; |
f00aae0f KS |
15095 | struct event_location *location; |
15096 | struct cleanup *cleanup; | |
fd9b8c24 | 15097 | |
409873ef SS |
15098 | if (utp->at_string) |
15099 | addr_str = utp->at_string; | |
15100 | else | |
15101 | { | |
15102 | /* In the absence of a source location, fall back to raw | |
15103 | address. Since there is no way to confirm that the address | |
15104 | means the same thing as when the trace was started, warn the | |
15105 | user. */ | |
3e43a32a MS |
15106 | warning (_("Uploaded tracepoint %d has no " |
15107 | "source location, using raw address"), | |
409873ef | 15108 | utp->number); |
8c042590 | 15109 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15110 | addr_str = small_buf; |
15111 | } | |
15112 | ||
15113 | /* There's not much we can do with a sequence of bytecodes. */ | |
15114 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15115 | warning (_("Uploaded tracepoint %d condition " |
15116 | "has no source form, ignoring it"), | |
409873ef | 15117 | utp->number); |
d5551862 | 15118 | |
f00aae0f KS |
15119 | location = string_to_event_location (&addr_str, current_language); |
15120 | cleanup = make_cleanup_delete_event_location (location); | |
8cdf0e15 | 15121 | if (!create_breakpoint (get_current_arch (), |
f00aae0f KS |
15122 | location, |
15123 | utp->cond_string, -1, addr_str, | |
e7e0cddf | 15124 | 0 /* parse cond/thread */, |
8cdf0e15 | 15125 | 0 /* tempflag */, |
0fb4aa4b | 15126 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15127 | 0 /* Ignore count */, |
15128 | pending_break_support, | |
348d480f | 15129 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15130 | 0 /* from_tty */, |
84f4c1fe | 15131 | utp->enabled /* enabled */, |
44f238bb PA |
15132 | 0 /* internal */, |
15133 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
f00aae0f KS |
15134 | { |
15135 | do_cleanups (cleanup); | |
15136 | return NULL; | |
15137 | } | |
15138 | ||
15139 | do_cleanups (cleanup); | |
fd9b8c24 | 15140 | |
409873ef | 15141 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15142 | tp = get_tracepoint (tracepoint_count); |
15143 | gdb_assert (tp != NULL); | |
d5551862 | 15144 | |
00bf0b85 SS |
15145 | if (utp->pass > 0) |
15146 | { | |
8c042590 PM |
15147 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15148 | tp->base.number); | |
00bf0b85 | 15149 | |
409873ef | 15150 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15151 | } |
15152 | ||
409873ef SS |
15153 | /* If we have uploaded versions of the original commands, set up a |
15154 | special-purpose "reader" function and call the usual command line | |
15155 | reader, then pass the result to the breakpoint command-setting | |
15156 | function. */ | |
3149d8c1 | 15157 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15158 | { |
409873ef | 15159 | struct command_line *cmd_list; |
00bf0b85 | 15160 | |
409873ef | 15161 | this_utp = utp; |
3149d8c1 | 15162 | next_cmd = 0; |
d5551862 | 15163 | |
409873ef SS |
15164 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15165 | ||
d9b3f62e | 15166 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15167 | } |
3149d8c1 SS |
15168 | else if (!VEC_empty (char_ptr, utp->actions) |
15169 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15170 | warning (_("Uploaded tracepoint %d actions " |
15171 | "have no source form, ignoring them"), | |
409873ef | 15172 | utp->number); |
00bf0b85 | 15173 | |
f196051f SS |
15174 | /* Copy any status information that might be available. */ |
15175 | tp->base.hit_count = utp->hit_count; | |
15176 | tp->traceframe_usage = utp->traceframe_usage; | |
15177 | ||
00bf0b85 | 15178 | return tp; |
d9b3f62e | 15179 | } |
00bf0b85 | 15180 | |
1042e4c0 SS |
15181 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15182 | omitted. */ | |
15183 | ||
15184 | static void | |
e5a67952 | 15185 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15186 | { |
79a45e25 | 15187 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15188 | int num_printed; |
1042e4c0 | 15189 | |
e5a67952 | 15190 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15191 | |
15192 | if (num_printed == 0) | |
1042e4c0 | 15193 | { |
e5a67952 | 15194 | if (args == NULL || *args == '\0') |
d77f58be SS |
15195 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15196 | else | |
e5a67952 | 15197 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15198 | } |
ad443146 SS |
15199 | |
15200 | default_collect_info (); | |
1042e4c0 SS |
15201 | } |
15202 | ||
4a64f543 | 15203 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15204 | Not supported by all targets. */ |
15205 | static void | |
15206 | enable_trace_command (char *args, int from_tty) | |
15207 | { | |
15208 | enable_command (args, from_tty); | |
15209 | } | |
15210 | ||
4a64f543 | 15211 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15212 | Not supported by all targets. */ |
15213 | static void | |
15214 | disable_trace_command (char *args, int from_tty) | |
15215 | { | |
15216 | disable_command (args, from_tty); | |
15217 | } | |
15218 | ||
4a64f543 | 15219 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15220 | static void |
15221 | delete_trace_command (char *arg, int from_tty) | |
15222 | { | |
35df4500 | 15223 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15224 | |
15225 | dont_repeat (); | |
15226 | ||
15227 | if (arg == 0) | |
15228 | { | |
15229 | int breaks_to_delete = 0; | |
15230 | ||
15231 | /* Delete all breakpoints if no argument. | |
15232 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15233 | have to be deleted with an explicit breakpoint number |
15234 | argument. */ | |
1042e4c0 | 15235 | ALL_TRACEPOINTS (b) |
46c6471b | 15236 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15237 | { |
15238 | breaks_to_delete = 1; | |
15239 | break; | |
15240 | } | |
1042e4c0 SS |
15241 | |
15242 | /* Ask user only if there are some breakpoints to delete. */ | |
15243 | if (!from_tty | |
15244 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15245 | { | |
35df4500 | 15246 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15247 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15248 | delete_breakpoint (b); |
1042e4c0 SS |
15249 | } |
15250 | } | |
15251 | else | |
51be5b68 | 15252 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15253 | } |
15254 | ||
197f0a60 TT |
15255 | /* Helper function for trace_pass_command. */ |
15256 | ||
15257 | static void | |
d9b3f62e | 15258 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15259 | { |
d9b3f62e | 15260 | tp->pass_count = count; |
6f6484cd | 15261 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15262 | if (from_tty) |
15263 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15264 | tp->base.number, count); |
197f0a60 TT |
15265 | } |
15266 | ||
1042e4c0 SS |
15267 | /* Set passcount for tracepoint. |
15268 | ||
15269 | First command argument is passcount, second is tracepoint number. | |
15270 | If tracepoint number omitted, apply to most recently defined. | |
15271 | Also accepts special argument "all". */ | |
15272 | ||
15273 | static void | |
15274 | trace_pass_command (char *args, int from_tty) | |
15275 | { | |
d9b3f62e | 15276 | struct tracepoint *t1; |
1042e4c0 | 15277 | unsigned int count; |
1042e4c0 SS |
15278 | |
15279 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15280 | error (_("passcount command requires an " |
15281 | "argument (count + optional TP num)")); | |
1042e4c0 | 15282 | |
4a64f543 | 15283 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15284 | |
529480d0 | 15285 | args = skip_spaces (args); |
1042e4c0 SS |
15286 | if (*args && strncasecmp (args, "all", 3) == 0) |
15287 | { | |
d9b3f62e PA |
15288 | struct breakpoint *b; |
15289 | ||
1042e4c0 | 15290 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15291 | if (*args) |
15292 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15293 | |
d9b3f62e | 15294 | ALL_TRACEPOINTS (b) |
197f0a60 | 15295 | { |
d9b3f62e | 15296 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15297 | trace_pass_set_count (t1, count, from_tty); |
15298 | } | |
15299 | } | |
15300 | else if (*args == '\0') | |
1042e4c0 | 15301 | { |
5fa1d40e | 15302 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15303 | if (t1) |
197f0a60 TT |
15304 | trace_pass_set_count (t1, count, from_tty); |
15305 | } | |
15306 | else | |
15307 | { | |
15308 | struct get_number_or_range_state state; | |
15309 | ||
15310 | init_number_or_range (&state, args); | |
15311 | while (!state.finished) | |
1042e4c0 | 15312 | { |
5fa1d40e | 15313 | t1 = get_tracepoint_by_number (&args, &state); |
197f0a60 TT |
15314 | if (t1) |
15315 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15316 | } |
15317 | } | |
1042e4c0 SS |
15318 | } |
15319 | ||
d9b3f62e | 15320 | struct tracepoint * |
1042e4c0 SS |
15321 | get_tracepoint (int num) |
15322 | { | |
15323 | struct breakpoint *t; | |
15324 | ||
15325 | ALL_TRACEPOINTS (t) | |
15326 | if (t->number == num) | |
d9b3f62e | 15327 | return (struct tracepoint *) t; |
1042e4c0 SS |
15328 | |
15329 | return NULL; | |
15330 | } | |
15331 | ||
d5551862 SS |
15332 | /* Find the tracepoint with the given target-side number (which may be |
15333 | different from the tracepoint number after disconnecting and | |
15334 | reconnecting). */ | |
15335 | ||
d9b3f62e | 15336 | struct tracepoint * |
d5551862 SS |
15337 | get_tracepoint_by_number_on_target (int num) |
15338 | { | |
d9b3f62e | 15339 | struct breakpoint *b; |
d5551862 | 15340 | |
d9b3f62e PA |
15341 | ALL_TRACEPOINTS (b) |
15342 | { | |
15343 | struct tracepoint *t = (struct tracepoint *) b; | |
15344 | ||
15345 | if (t->number_on_target == num) | |
15346 | return t; | |
15347 | } | |
d5551862 SS |
15348 | |
15349 | return NULL; | |
15350 | } | |
15351 | ||
1042e4c0 | 15352 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15353 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15354 | If the argument is missing, the most recent tracepoint |
15355 | (tracepoint_count) is returned. */ | |
15356 | ||
d9b3f62e | 15357 | struct tracepoint * |
197f0a60 | 15358 | get_tracepoint_by_number (char **arg, |
5fa1d40e | 15359 | struct get_number_or_range_state *state) |
1042e4c0 | 15360 | { |
1042e4c0 SS |
15361 | struct breakpoint *t; |
15362 | int tpnum; | |
15363 | char *instring = arg == NULL ? NULL : *arg; | |
15364 | ||
197f0a60 TT |
15365 | if (state) |
15366 | { | |
15367 | gdb_assert (!state->finished); | |
15368 | tpnum = get_number_or_range (state); | |
15369 | } | |
15370 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15371 | tpnum = tracepoint_count; |
1042e4c0 | 15372 | else |
197f0a60 | 15373 | tpnum = get_number (arg); |
1042e4c0 SS |
15374 | |
15375 | if (tpnum <= 0) | |
15376 | { | |
15377 | if (instring && *instring) | |
15378 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15379 | instring); | |
15380 | else | |
5fa1d40e | 15381 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15382 | return NULL; |
15383 | } | |
15384 | ||
15385 | ALL_TRACEPOINTS (t) | |
15386 | if (t->number == tpnum) | |
15387 | { | |
d9b3f62e | 15388 | return (struct tracepoint *) t; |
1042e4c0 SS |
15389 | } |
15390 | ||
1042e4c0 SS |
15391 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15392 | return NULL; | |
15393 | } | |
15394 | ||
d9b3f62e PA |
15395 | void |
15396 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15397 | { | |
15398 | if (b->thread != -1) | |
15399 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15400 | ||
15401 | if (b->task != 0) | |
15402 | fprintf_unfiltered (fp, " task %d", b->task); | |
15403 | ||
15404 | fprintf_unfiltered (fp, "\n"); | |
15405 | } | |
15406 | ||
6149aea9 PA |
15407 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15408 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15409 | on each breakpoint and only include the ones for which it returns | |
15410 | non-zero. */ | |
15411 | ||
1042e4c0 | 15412 | static void |
6149aea9 PA |
15413 | save_breakpoints (char *filename, int from_tty, |
15414 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15415 | { |
15416 | struct breakpoint *tp; | |
6149aea9 | 15417 | int any = 0; |
1042e4c0 | 15418 | struct cleanup *cleanup; |
a7bdde9e | 15419 | struct ui_file *fp; |
6149aea9 | 15420 | int extra_trace_bits = 0; |
1042e4c0 | 15421 | |
6149aea9 PA |
15422 | if (filename == 0 || *filename == 0) |
15423 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15424 | |
15425 | /* See if we have anything to save. */ | |
6149aea9 | 15426 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15427 | { |
6149aea9 | 15428 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15429 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15430 | continue; |
15431 | ||
15432 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15433 | if (filter && !filter (tp)) | |
15434 | continue; | |
15435 | ||
15436 | any = 1; | |
15437 | ||
15438 | if (is_tracepoint (tp)) | |
15439 | { | |
15440 | extra_trace_bits = 1; | |
15441 | ||
15442 | /* We can stop searching. */ | |
15443 | break; | |
15444 | } | |
1042e4c0 | 15445 | } |
6149aea9 PA |
15446 | |
15447 | if (!any) | |
1042e4c0 | 15448 | { |
6149aea9 | 15449 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15450 | return; |
15451 | } | |
15452 | ||
c718be47 PA |
15453 | filename = tilde_expand (filename); |
15454 | cleanup = make_cleanup (xfree, filename); | |
15455 | fp = gdb_fopen (filename, "w"); | |
059fb39f | 15456 | if (!fp) |
6149aea9 PA |
15457 | error (_("Unable to open file '%s' for saving (%s)"), |
15458 | filename, safe_strerror (errno)); | |
a7bdde9e | 15459 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15460 | |
6149aea9 PA |
15461 | if (extra_trace_bits) |
15462 | save_trace_state_variables (fp); | |
8bf6485c | 15463 | |
6149aea9 | 15464 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15465 | { |
6149aea9 | 15466 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15467 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15468 | continue; |
8bf6485c | 15469 | |
6149aea9 PA |
15470 | /* If we have a filter, only save the breakpoints it accepts. */ |
15471 | if (filter && !filter (tp)) | |
15472 | continue; | |
15473 | ||
348d480f | 15474 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15475 | |
6149aea9 PA |
15476 | /* Note, we can't rely on tp->number for anything, as we can't |
15477 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15478 | instead. */ | |
15479 | ||
15480 | if (tp->cond_string) | |
15481 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15482 | ||
15483 | if (tp->ignore_count) | |
15484 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15485 | ||
2d9442cc | 15486 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15487 | { |
6c63c96a | 15488 | struct gdb_exception exception; |
a7bdde9e | 15489 | |
6149aea9 | 15490 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15491 | |
79a45e25 | 15492 | ui_out_redirect (current_uiout, fp); |
492d29ea | 15493 | TRY |
1042e4c0 | 15494 | { |
79a45e25 | 15495 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15496 | } |
492d29ea PA |
15497 | CATCH (ex, RETURN_MASK_ALL) |
15498 | { | |
6c63c96a | 15499 | ui_out_redirect (current_uiout, NULL); |
492d29ea PA |
15500 | throw_exception (ex); |
15501 | } | |
15502 | END_CATCH | |
1042e4c0 | 15503 | |
6c63c96a | 15504 | ui_out_redirect (current_uiout, NULL); |
a7bdde9e | 15505 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15506 | } |
6149aea9 PA |
15507 | |
15508 | if (tp->enable_state == bp_disabled) | |
99894e11 | 15509 | fprintf_unfiltered (fp, "disable $bpnum\n"); |
6149aea9 PA |
15510 | |
15511 | /* If this is a multi-location breakpoint, check if the locations | |
15512 | should be individually disabled. Watchpoint locations are | |
15513 | special, and not user visible. */ | |
15514 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15515 | { | |
15516 | struct bp_location *loc; | |
15517 | int n = 1; | |
15518 | ||
15519 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15520 | if (!loc->enabled) | |
15521 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15522 | } | |
1042e4c0 | 15523 | } |
8bf6485c | 15524 | |
6149aea9 | 15525 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15526 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15527 | ||
1042e4c0 | 15528 | if (from_tty) |
6149aea9 | 15529 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
c718be47 | 15530 | do_cleanups (cleanup); |
6149aea9 PA |
15531 | } |
15532 | ||
15533 | /* The `save breakpoints' command. */ | |
15534 | ||
15535 | static void | |
15536 | save_breakpoints_command (char *args, int from_tty) | |
15537 | { | |
15538 | save_breakpoints (args, from_tty, NULL); | |
15539 | } | |
15540 | ||
15541 | /* The `save tracepoints' command. */ | |
15542 | ||
15543 | static void | |
15544 | save_tracepoints_command (char *args, int from_tty) | |
15545 | { | |
15546 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15547 | } |
15548 | ||
15549 | /* Create a vector of all tracepoints. */ | |
15550 | ||
15551 | VEC(breakpoint_p) * | |
eeae04df | 15552 | all_tracepoints (void) |
1042e4c0 SS |
15553 | { |
15554 | VEC(breakpoint_p) *tp_vec = 0; | |
15555 | struct breakpoint *tp; | |
15556 | ||
15557 | ALL_TRACEPOINTS (tp) | |
15558 | { | |
15559 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15560 | } | |
15561 | ||
15562 | return tp_vec; | |
15563 | } | |
15564 | ||
c906108c | 15565 | \f |
4a64f543 MS |
15566 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15567 | commands. It is defined as a macro to prevent duplication. | |
15568 | COMMAND should be a string constant containing the name of the | |
15569 | command. */ | |
31e2b00f | 15570 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15571 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15572 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15573 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15574 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15575 | `-probe-dtrace' (for a DTrace probe).\n\ | |
31e2b00f AS |
15576 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15577 | If a line number is specified, break at start of code for that line.\n\ | |
15578 | If a function is specified, break at start of code for that function.\n\ | |
15579 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15580 | With no LOCATION, uses current execution address of the selected\n\ |
15581 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15582 | \n\ |
15583 | THREADNUM is the number from \"info threads\".\n\ | |
15584 | CONDITION is a boolean expression.\n\ | |
15585 | \n\ | |
d41c0fc8 PA |
15586 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15587 | conditions are different.\n\ | |
31e2b00f AS |
15588 | \n\ |
15589 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15590 | ||
44feb3ce TT |
15591 | /* List of subcommands for "catch". */ |
15592 | static struct cmd_list_element *catch_cmdlist; | |
15593 | ||
15594 | /* List of subcommands for "tcatch". */ | |
15595 | static struct cmd_list_element *tcatch_cmdlist; | |
15596 | ||
9ac4176b | 15597 | void |
44feb3ce | 15598 | add_catch_command (char *name, char *docstring, |
82ae6c8d | 15599 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15600 | completer_ftype *completer, |
44feb3ce TT |
15601 | void *user_data_catch, |
15602 | void *user_data_tcatch) | |
15603 | { | |
15604 | struct cmd_list_element *command; | |
15605 | ||
15606 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15607 | &catch_cmdlist); | |
15608 | set_cmd_sfunc (command, sfunc); | |
15609 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15610 | set_cmd_completer (command, completer); |
44feb3ce TT |
15611 | |
15612 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15613 | &tcatch_cmdlist); | |
15614 | set_cmd_sfunc (command, sfunc); | |
15615 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15616 | set_cmd_completer (command, completer); |
44feb3ce TT |
15617 | } |
15618 | ||
6149aea9 PA |
15619 | static void |
15620 | save_command (char *arg, int from_tty) | |
15621 | { | |
3e43a32a MS |
15622 | printf_unfiltered (_("\"save\" must be followed by " |
15623 | "the name of a save subcommand.\n")); | |
635c7e8a | 15624 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15625 | } |
15626 | ||
84f4c1fe PM |
15627 | struct breakpoint * |
15628 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15629 | void *data) | |
15630 | { | |
35df4500 | 15631 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15632 | |
35df4500 | 15633 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15634 | { |
15635 | if ((*callback) (b, data)) | |
15636 | return b; | |
15637 | } | |
15638 | ||
15639 | return NULL; | |
15640 | } | |
15641 | ||
0574c78f GB |
15642 | /* Zero if any of the breakpoint's locations could be a location where |
15643 | functions have been inlined, nonzero otherwise. */ | |
15644 | ||
15645 | static int | |
15646 | is_non_inline_function (struct breakpoint *b) | |
15647 | { | |
15648 | /* The shared library event breakpoint is set on the address of a | |
15649 | non-inline function. */ | |
15650 | if (b->type == bp_shlib_event) | |
15651 | return 1; | |
15652 | ||
15653 | return 0; | |
15654 | } | |
15655 | ||
15656 | /* Nonzero if the specified PC cannot be a location where functions | |
15657 | have been inlined. */ | |
15658 | ||
15659 | int | |
09ac7c10 TT |
15660 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15661 | const struct target_waitstatus *ws) | |
0574c78f GB |
15662 | { |
15663 | struct breakpoint *b; | |
15664 | struct bp_location *bl; | |
15665 | ||
15666 | ALL_BREAKPOINTS (b) | |
15667 | { | |
15668 | if (!is_non_inline_function (b)) | |
15669 | continue; | |
15670 | ||
15671 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15672 | { | |
15673 | if (!bl->shlib_disabled | |
09ac7c10 | 15674 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15675 | return 1; |
15676 | } | |
15677 | } | |
15678 | ||
15679 | return 0; | |
15680 | } | |
15681 | ||
2f202fde JK |
15682 | /* Remove any references to OBJFILE which is going to be freed. */ |
15683 | ||
15684 | void | |
15685 | breakpoint_free_objfile (struct objfile *objfile) | |
15686 | { | |
15687 | struct bp_location **locp, *loc; | |
15688 | ||
15689 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15690 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15691 | loc->symtab = NULL; |
15692 | } | |
15693 | ||
2060206e PA |
15694 | void |
15695 | initialize_breakpoint_ops (void) | |
15696 | { | |
15697 | static int initialized = 0; | |
15698 | ||
15699 | struct breakpoint_ops *ops; | |
15700 | ||
15701 | if (initialized) | |
15702 | return; | |
15703 | initialized = 1; | |
15704 | ||
15705 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15706 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15707 | internal and momentary breakpoints, etc.). */ | |
15708 | ops = &bkpt_base_breakpoint_ops; | |
15709 | *ops = base_breakpoint_ops; | |
15710 | ops->re_set = bkpt_re_set; | |
15711 | ops->insert_location = bkpt_insert_location; | |
15712 | ops->remove_location = bkpt_remove_location; | |
15713 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15714 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15715 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15716 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15717 | |
15718 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15719 | ops = &bkpt_breakpoint_ops; | |
15720 | *ops = bkpt_base_breakpoint_ops; | |
15721 | ops->re_set = bkpt_re_set; | |
15722 | ops->resources_needed = bkpt_resources_needed; | |
15723 | ops->print_it = bkpt_print_it; | |
15724 | ops->print_mention = bkpt_print_mention; | |
15725 | ops->print_recreate = bkpt_print_recreate; | |
15726 | ||
15727 | /* Ranged breakpoints. */ | |
15728 | ops = &ranged_breakpoint_ops; | |
15729 | *ops = bkpt_breakpoint_ops; | |
15730 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15731 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15732 | ops->print_it = print_it_ranged_breakpoint; | |
15733 | ops->print_one = print_one_ranged_breakpoint; | |
15734 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15735 | ops->print_mention = print_mention_ranged_breakpoint; | |
15736 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15737 | ||
15738 | /* Internal breakpoints. */ | |
15739 | ops = &internal_breakpoint_ops; | |
15740 | *ops = bkpt_base_breakpoint_ops; | |
15741 | ops->re_set = internal_bkpt_re_set; | |
15742 | ops->check_status = internal_bkpt_check_status; | |
15743 | ops->print_it = internal_bkpt_print_it; | |
15744 | ops->print_mention = internal_bkpt_print_mention; | |
15745 | ||
15746 | /* Momentary breakpoints. */ | |
15747 | ops = &momentary_breakpoint_ops; | |
15748 | *ops = bkpt_base_breakpoint_ops; | |
15749 | ops->re_set = momentary_bkpt_re_set; | |
15750 | ops->check_status = momentary_bkpt_check_status; | |
15751 | ops->print_it = momentary_bkpt_print_it; | |
15752 | ops->print_mention = momentary_bkpt_print_mention; | |
15753 | ||
e2e4d78b JK |
15754 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15755 | ops = &longjmp_breakpoint_ops; | |
15756 | *ops = momentary_breakpoint_ops; | |
15757 | ops->dtor = longjmp_bkpt_dtor; | |
15758 | ||
55aa24fb SDJ |
15759 | /* Probe breakpoints. */ |
15760 | ops = &bkpt_probe_breakpoint_ops; | |
15761 | *ops = bkpt_breakpoint_ops; | |
15762 | ops->insert_location = bkpt_probe_insert_location; | |
15763 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15764 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15765 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15766 | |
2060206e PA |
15767 | /* Watchpoints. */ |
15768 | ops = &watchpoint_breakpoint_ops; | |
15769 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15770 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15771 | ops->re_set = re_set_watchpoint; |
15772 | ops->insert_location = insert_watchpoint; | |
15773 | ops->remove_location = remove_watchpoint; | |
15774 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15775 | ops->check_status = check_status_watchpoint; | |
15776 | ops->resources_needed = resources_needed_watchpoint; | |
15777 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15778 | ops->print_it = print_it_watchpoint; | |
15779 | ops->print_mention = print_mention_watchpoint; | |
15780 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15781 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15782 | |
15783 | /* Masked watchpoints. */ | |
15784 | ops = &masked_watchpoint_breakpoint_ops; | |
15785 | *ops = watchpoint_breakpoint_ops; | |
15786 | ops->insert_location = insert_masked_watchpoint; | |
15787 | ops->remove_location = remove_masked_watchpoint; | |
15788 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15789 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15790 | ops->print_it = print_it_masked_watchpoint; | |
15791 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15792 | ops->print_mention = print_mention_masked_watchpoint; | |
15793 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15794 | ||
15795 | /* Tracepoints. */ | |
15796 | ops = &tracepoint_breakpoint_ops; | |
15797 | *ops = base_breakpoint_ops; | |
15798 | ops->re_set = tracepoint_re_set; | |
15799 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15800 | ops->print_one_detail = tracepoint_print_one_detail; | |
15801 | ops->print_mention = tracepoint_print_mention; | |
15802 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15803 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15804 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15805 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15806 | |
55aa24fb SDJ |
15807 | /* Probe tracepoints. */ |
15808 | ops = &tracepoint_probe_breakpoint_ops; | |
15809 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15810 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15811 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15812 | |
983af33b SDJ |
15813 | /* Static tracepoints with marker (`-m'). */ |
15814 | ops = &strace_marker_breakpoint_ops; | |
15815 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15816 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15817 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15818 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15819 | |
15820 | /* Fork catchpoints. */ | |
15821 | ops = &catch_fork_breakpoint_ops; | |
15822 | *ops = base_breakpoint_ops; | |
15823 | ops->insert_location = insert_catch_fork; | |
15824 | ops->remove_location = remove_catch_fork; | |
15825 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15826 | ops->print_it = print_it_catch_fork; | |
15827 | ops->print_one = print_one_catch_fork; | |
15828 | ops->print_mention = print_mention_catch_fork; | |
15829 | ops->print_recreate = print_recreate_catch_fork; | |
15830 | ||
15831 | /* Vfork catchpoints. */ | |
15832 | ops = &catch_vfork_breakpoint_ops; | |
15833 | *ops = base_breakpoint_ops; | |
15834 | ops->insert_location = insert_catch_vfork; | |
15835 | ops->remove_location = remove_catch_vfork; | |
15836 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15837 | ops->print_it = print_it_catch_vfork; | |
15838 | ops->print_one = print_one_catch_vfork; | |
15839 | ops->print_mention = print_mention_catch_vfork; | |
15840 | ops->print_recreate = print_recreate_catch_vfork; | |
15841 | ||
15842 | /* Exec catchpoints. */ | |
15843 | ops = &catch_exec_breakpoint_ops; | |
15844 | *ops = base_breakpoint_ops; | |
15845 | ops->dtor = dtor_catch_exec; | |
15846 | ops->insert_location = insert_catch_exec; | |
15847 | ops->remove_location = remove_catch_exec; | |
15848 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15849 | ops->print_it = print_it_catch_exec; | |
15850 | ops->print_one = print_one_catch_exec; | |
15851 | ops->print_mention = print_mention_catch_exec; | |
15852 | ops->print_recreate = print_recreate_catch_exec; | |
15853 | ||
edcc5120 TT |
15854 | /* Solib-related catchpoints. */ |
15855 | ops = &catch_solib_breakpoint_ops; | |
15856 | *ops = base_breakpoint_ops; | |
15857 | ops->dtor = dtor_catch_solib; | |
15858 | ops->insert_location = insert_catch_solib; | |
15859 | ops->remove_location = remove_catch_solib; | |
15860 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15861 | ops->check_status = check_status_catch_solib; | |
15862 | ops->print_it = print_it_catch_solib; | |
15863 | ops->print_one = print_one_catch_solib; | |
15864 | ops->print_mention = print_mention_catch_solib; | |
15865 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15866 | |
15867 | ops = &dprintf_breakpoint_ops; | |
15868 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15869 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15870 | ops->resources_needed = bkpt_resources_needed; |
15871 | ops->print_it = bkpt_print_it; | |
15872 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15873 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15874 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15875 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15876 | } |
15877 | ||
8bfd80db YQ |
15878 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15879 | ||
15880 | static struct cmd_list_element *enablebreaklist = NULL; | |
15881 | ||
c906108c | 15882 | void |
fba45db2 | 15883 | _initialize_breakpoint (void) |
c906108c SS |
15884 | { |
15885 | struct cmd_list_element *c; | |
15886 | ||
2060206e PA |
15887 | initialize_breakpoint_ops (); |
15888 | ||
84acb35a | 15889 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15890 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15891 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15892 | |
55aa24fb SDJ |
15893 | breakpoint_objfile_key |
15894 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15895 | |
c906108c SS |
15896 | breakpoint_chain = 0; |
15897 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15898 | before a breakpoint is set. */ | |
15899 | breakpoint_count = 0; | |
15900 | ||
1042e4c0 SS |
15901 | tracepoint_count = 0; |
15902 | ||
1bedd215 AC |
15903 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15904 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15905 | Usage is `ignore N COUNT'.")); | |
c906108c | 15906 | |
1bedd215 AC |
15907 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15908 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15909 | Give breakpoint number as argument after \"commands\".\n\ |
15910 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15911 | The commands themselves follow starting on the next line.\n\ | |
15912 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15913 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15914 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15915 | |
d55637df | 15916 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15917 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15918 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15919 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15920 | set_cmd_completer (c, condition_completer); |
c906108c | 15921 | |
1bedd215 | 15922 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15923 | Set a temporary breakpoint.\n\ |
c906108c SS |
15924 | Like \"break\" except the breakpoint is only temporary,\n\ |
15925 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15926 | by using \"enable delete\" on the breakpoint number.\n\ |
15927 | \n" | |
15928 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15929 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15930 | |
1bedd215 | 15931 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15932 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15933 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15934 | some target hardware may not have this support.\n\ |
15935 | \n" | |
15936 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15937 | set_cmd_completer (c, location_completer); |
c906108c | 15938 | |
1bedd215 | 15939 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15940 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15941 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15942 | so it will be deleted when hit.\n\ |
15943 | \n" | |
15944 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15945 | set_cmd_completer (c, location_completer); |
c906108c | 15946 | |
1bedd215 AC |
15947 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15948 | Enable some breakpoints.\n\ | |
c906108c SS |
15949 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15950 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15951 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15952 | With a subcommand you can enable temporarily."), |
c906108c | 15953 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15954 | |
15955 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15956 | ||
84951ab5 | 15957 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15958 | Enable some breakpoints.\n\ |
c906108c SS |
15959 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15960 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15961 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15962 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15963 | |
1a966eab AC |
15964 | add_cmd ("once", no_class, enable_once_command, _("\ |
15965 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15966 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15967 | &enablebreaklist); |
15968 | ||
1a966eab AC |
15969 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15970 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15971 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15972 | &enablebreaklist); |
15973 | ||
816338b5 SS |
15974 | add_cmd ("count", no_class, enable_count_command, _("\ |
15975 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15976 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15977 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15978 | &enablebreaklist); | |
15979 | ||
1a966eab AC |
15980 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15981 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15982 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15983 | &enablelist); |
15984 | ||
1a966eab AC |
15985 | add_cmd ("once", no_class, enable_once_command, _("\ |
15986 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15987 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15988 | &enablelist); |
15989 | ||
15990 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15991 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15992 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15993 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15994 | &enablelist); |
15995 | ||
1bedd215 AC |
15996 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15997 | Disable some breakpoints.\n\ | |
c906108c SS |
15998 | Arguments are breakpoint numbers with spaces in between.\n\ |
15999 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16000 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16001 | &disablelist, "disable ", 1, &cmdlist); |
16002 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16003 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 16004 | |
1a966eab AC |
16005 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16006 | Disable some breakpoints.\n\ | |
c906108c SS |
16007 | Arguments are breakpoint numbers with spaces in between.\n\ |
16008 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16009 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16010 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16011 | &disablelist); |
16012 | ||
1bedd215 AC |
16013 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16014 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16015 | Arguments are breakpoint numbers with spaces in between.\n\ |
16016 | To delete all breakpoints, give no argument.\n\ | |
16017 | \n\ | |
16018 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16019 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16020 | &deletelist, "delete ", 1, &cmdlist); |
16021 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16022 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16023 | |
1a966eab AC |
16024 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16025 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16026 | Arguments are breakpoint numbers with spaces in between.\n\ |
16027 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16028 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16029 | &deletelist); |
16030 | ||
1bedd215 AC |
16031 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16032 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16033 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16034 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16035 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16036 | If an address is specified, breakpoints at that address are cleared.\n\ |
16037 | \n\ | |
16038 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16039 | is executing in.\n\ |
16040 | \n\ | |
1bedd215 | 16041 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16042 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16043 | |
1bedd215 | 16044 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16045 | Set breakpoint at specified line or function.\n" |
16046 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16047 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16048 | |
c906108c SS |
16049 | add_com_alias ("b", "break", class_run, 1); |
16050 | add_com_alias ("br", "break", class_run, 1); | |
16051 | add_com_alias ("bre", "break", class_run, 1); | |
16052 | add_com_alias ("brea", "break", class_run, 1); | |
16053 | ||
c906108c SS |
16054 | if (dbx_commands) |
16055 | { | |
1bedd215 AC |
16056 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16057 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16058 | &stoplist, "stop ", 1, &cmdlist); |
16059 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16060 | _("Break in function or address."), &stoplist); |
c5aa993b | 16061 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16062 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16063 | add_com ("status", class_info, breakpoints_info, _("\ |
16064 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16065 | The \"Type\" column indicates one of:\n\ |
16066 | \tbreakpoint - normal breakpoint\n\ | |
16067 | \twatchpoint - watchpoint\n\ | |
16068 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16069 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16070 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16071 | address and file/line number respectively.\n\ |
16072 | \n\ | |
16073 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16074 | are set to the address of the last breakpoint listed unless the command\n\ |
16075 | is prefixed with \"server \".\n\n\ | |
c906108c | 16076 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16077 | breakpoint set.")); |
c906108c SS |
16078 | } |
16079 | ||
1bedd215 | 16080 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16081 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16082 | The \"Type\" column indicates one of:\n\ |
16083 | \tbreakpoint - normal breakpoint\n\ | |
16084 | \twatchpoint - watchpoint\n\ | |
16085 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16086 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16087 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16088 | address and file/line number respectively.\n\ |
16089 | \n\ | |
16090 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16091 | are set to the address of the last breakpoint listed unless the command\n\ |
16092 | is prefixed with \"server \".\n\n\ | |
c906108c | 16093 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16094 | breakpoint set.")); |
c906108c | 16095 | |
6b04bdb7 MS |
16096 | add_info_alias ("b", "breakpoints", 1); |
16097 | ||
1a966eab AC |
16098 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16099 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16100 | The \"Type\" column indicates one of:\n\ |
16101 | \tbreakpoint - normal breakpoint\n\ | |
16102 | \twatchpoint - watchpoint\n\ | |
16103 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16104 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16105 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16106 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16107 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16108 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16109 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16110 | address and file/line number respectively.\n\ |
16111 | \n\ | |
16112 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16113 | are set to the address of the last breakpoint listed unless the command\n\ |
16114 | is prefixed with \"server \".\n\n\ | |
c906108c | 16115 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16116 | breakpoint set."), |
c906108c SS |
16117 | &maintenanceinfolist); |
16118 | ||
44feb3ce TT |
16119 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16120 | Set catchpoints to catch events."), | |
16121 | &catch_cmdlist, "catch ", | |
16122 | 0/*allow-unknown*/, &cmdlist); | |
16123 | ||
16124 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16125 | Set temporary catchpoints to catch events."), | |
16126 | &tcatch_cmdlist, "tcatch ", | |
16127 | 0/*allow-unknown*/, &cmdlist); | |
16128 | ||
44feb3ce TT |
16129 | add_catch_command ("fork", _("Catch calls to fork."), |
16130 | catch_fork_command_1, | |
a96d9b2e | 16131 | NULL, |
44feb3ce TT |
16132 | (void *) (uintptr_t) catch_fork_permanent, |
16133 | (void *) (uintptr_t) catch_fork_temporary); | |
16134 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16135 | catch_fork_command_1, | |
a96d9b2e | 16136 | NULL, |
44feb3ce TT |
16137 | (void *) (uintptr_t) catch_vfork_permanent, |
16138 | (void *) (uintptr_t) catch_vfork_temporary); | |
16139 | add_catch_command ("exec", _("Catch calls to exec."), | |
16140 | catch_exec_command_1, | |
a96d9b2e SDJ |
16141 | NULL, |
16142 | CATCH_PERMANENT, | |
16143 | CATCH_TEMPORARY); | |
edcc5120 TT |
16144 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16145 | Usage: catch load [REGEX]\n\ | |
16146 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16147 | catch_load_command_1, | |
16148 | NULL, | |
16149 | CATCH_PERMANENT, | |
16150 | CATCH_TEMPORARY); | |
16151 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16152 | Usage: catch unload [REGEX]\n\ | |
16153 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16154 | catch_unload_command_1, | |
16155 | NULL, | |
16156 | CATCH_PERMANENT, | |
16157 | CATCH_TEMPORARY); | |
c5aa993b | 16158 | |
1bedd215 AC |
16159 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16160 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16161 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16162 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16163 | an expression changes.\n\ |
16164 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16165 | the memory to which it refers.")); | |
65d12d83 | 16166 | set_cmd_completer (c, expression_completer); |
c906108c | 16167 | |
1bedd215 AC |
16168 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16169 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16170 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16171 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16172 | an expression is read.\n\ |
16173 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16174 | the memory to which it refers.")); | |
65d12d83 | 16175 | set_cmd_completer (c, expression_completer); |
c906108c | 16176 | |
1bedd215 AC |
16177 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16178 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16179 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16180 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16181 | an expression is either read or written.\n\ |
16182 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16183 | the memory to which it refers.")); | |
65d12d83 | 16184 | set_cmd_completer (c, expression_completer); |
c906108c | 16185 | |
d77f58be | 16186 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16187 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16188 | |
920d2a44 AC |
16189 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16190 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16191 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16192 | &can_use_hw_watchpoints, _("\ | |
16193 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16194 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16195 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16196 | such is available. (However, any hardware watchpoints that were\n\ | |
16197 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16198 | hardware.)"), |
16199 | NULL, | |
920d2a44 | 16200 | show_can_use_hw_watchpoints, |
85c07804 | 16201 | &setlist, &showlist); |
c906108c SS |
16202 | |
16203 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16204 | |
1042e4c0 SS |
16205 | /* Tracepoint manipulation commands. */ |
16206 | ||
16207 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16208 | Set a tracepoint at specified line or function.\n\ | |
16209 | \n" | |
16210 | BREAK_ARGS_HELP ("trace") "\n\ | |
16211 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16212 | set_cmd_completer (c, location_completer); | |
16213 | ||
16214 | add_com_alias ("tp", "trace", class_alias, 0); | |
16215 | add_com_alias ("tr", "trace", class_alias, 1); | |
16216 | add_com_alias ("tra", "trace", class_alias, 1); | |
16217 | add_com_alias ("trac", "trace", class_alias, 1); | |
16218 | ||
7a697b8d SS |
16219 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16220 | Set a fast tracepoint at specified line or function.\n\ | |
16221 | \n" | |
16222 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16223 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16224 | set_cmd_completer (c, location_completer); | |
16225 | ||
0fb4aa4b PA |
16226 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16227 | Set a static tracepoint at specified line, function or marker.\n\ | |
16228 | \n\ | |
16229 | strace [LOCATION] [if CONDITION]\n\ | |
16230 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16231 | or -m MARKER_ID.\n\ | |
16232 | If a line number is specified, probe the marker at start of code\n\ | |
16233 | for that line. If a function is specified, probe the marker at start\n\ | |
16234 | of code for that function. If an address is specified, probe the marker\n\ | |
16235 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16236 | with that name. With no LOCATION, uses current execution address of\n\ | |
16237 | the selected stack frame.\n\ | |
16238 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16239 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16240 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16241 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16242 | \n\ | |
16243 | CONDITION is a boolean expression.\n\ | |
16244 | \n\ | |
d41c0fc8 PA |
16245 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16246 | conditions are different.\n\ | |
0fb4aa4b PA |
16247 | \n\ |
16248 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16249 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16250 | set_cmd_completer (c, location_completer); | |
16251 | ||
1042e4c0 | 16252 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16253 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16254 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16255 | last tracepoint set.")); | |
16256 | ||
16257 | add_info_alias ("tp", "tracepoints", 1); | |
16258 | ||
16259 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16260 | Delete specified tracepoints.\n\ | |
16261 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16262 | No argument means delete all tracepoints."), | |
16263 | &deletelist); | |
7e20dfcd | 16264 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16265 | |
16266 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16267 | Disable specified tracepoints.\n\ | |
16268 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16269 | No argument means disable all tracepoints."), | |
16270 | &disablelist); | |
16271 | deprecate_cmd (c, "disable"); | |
16272 | ||
16273 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16274 | Enable specified tracepoints.\n\ | |
16275 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16276 | No argument means enable all tracepoints."), | |
16277 | &enablelist); | |
16278 | deprecate_cmd (c, "enable"); | |
16279 | ||
16280 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16281 | Set the passcount for a tracepoint.\n\ | |
16282 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16283 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16284 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16285 | ||
6149aea9 PA |
16286 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16287 | _("Save breakpoint definitions as a script."), | |
16288 | &save_cmdlist, "save ", | |
16289 | 0/*allow-unknown*/, &cmdlist); | |
16290 | ||
16291 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16292 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16293 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16294 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16295 | session to restore them."), | |
16296 | &save_cmdlist); | |
16297 | set_cmd_completer (c, filename_completer); | |
16298 | ||
16299 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16300 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16301 | Use the 'source' command in another debug session to restore them."), |
16302 | &save_cmdlist); | |
1042e4c0 SS |
16303 | set_cmd_completer (c, filename_completer); |
16304 | ||
6149aea9 PA |
16305 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16306 | deprecate_cmd (c, "save tracepoints"); | |
16307 | ||
1bedd215 | 16308 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16309 | Breakpoint specific settings\n\ |
16310 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16311 | pending breakpoint behavior"), |
fa8d40ab JJ |
16312 | &breakpoint_set_cmdlist, "set breakpoint ", |
16313 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16314 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16315 | Breakpoint specific settings\n\ |
16316 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16317 | pending breakpoint behavior"), |
fa8d40ab JJ |
16318 | &breakpoint_show_cmdlist, "show breakpoint ", |
16319 | 0/*allow-unknown*/, &showlist); | |
16320 | ||
7915a72c AC |
16321 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16322 | &pending_break_support, _("\ | |
16323 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16324 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16325 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16326 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16327 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16328 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16329 | NULL, |
920d2a44 | 16330 | show_pending_break_support, |
6e1d7d6c AC |
16331 | &breakpoint_set_cmdlist, |
16332 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16333 | |
16334 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16335 | |
16336 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16337 | &automatic_hardware_breakpoints, _("\ | |
16338 | Set automatic usage of hardware breakpoints."), _("\ | |
16339 | Show automatic usage of hardware breakpoints."), _("\ | |
16340 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16341 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16342 | a warning will be emitted for such breakpoints."), | |
16343 | NULL, | |
16344 | show_automatic_hardware_breakpoints, | |
16345 | &breakpoint_set_cmdlist, | |
16346 | &breakpoint_show_cmdlist); | |
74960c60 | 16347 | |
a25a5a45 PA |
16348 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16349 | &always_inserted_mode, _("\ | |
74960c60 VP |
16350 | Set mode for inserting breakpoints."), _("\ |
16351 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16352 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16353 | they're created, kept inserted even when execution stops, and removed\n\ | |
16354 | only when the user deletes them. When this mode is off (the default),\n\ | |
16355 | breakpoints are inserted only when execution continues, and removed\n\ | |
16356 | when execution stops."), | |
72d0e2c5 YQ |
16357 | NULL, |
16358 | &show_always_inserted_mode, | |
16359 | &breakpoint_set_cmdlist, | |
16360 | &breakpoint_show_cmdlist); | |
f1310107 | 16361 | |
b775012e LM |
16362 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16363 | condition_evaluation_enums, | |
16364 | &condition_evaluation_mode_1, _("\ | |
16365 | Set mode of breakpoint condition evaluation."), _("\ | |
16366 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16367 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16368 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16369 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16370 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16371 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16372 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16373 | be set to \"gdb\""), | |
16374 | &set_condition_evaluation_mode, | |
16375 | &show_condition_evaluation_mode, | |
16376 | &breakpoint_set_cmdlist, | |
16377 | &breakpoint_show_cmdlist); | |
16378 | ||
f1310107 TJB |
16379 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16380 | Set a breakpoint for an address range.\n\ | |
16381 | break-range START-LOCATION, END-LOCATION\n\ | |
16382 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16383 | LINENUM, for that line in the current file,\n\ | |
16384 | FILE:LINENUM, for that line in that file,\n\ | |
16385 | +OFFSET, for that number of lines after the current line\n\ | |
16386 | or the start of the range\n\ | |
16387 | FUNCTION, for the first line in that function,\n\ | |
16388 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16389 | *ADDRESS, for the instruction at that address.\n\ | |
16390 | \n\ | |
16391 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16392 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16393 | range (including START-LOCATION and END-LOCATION).")); | |
16394 | ||
e7e0cddf SS |
16395 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16396 | Set a dynamic printf at specified line or function.\n\ | |
16397 | dprintf location,format string,arg1,arg2,...\n\ | |
16398 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16399 | If a line number is specified, break at start of code for that line.\n\ | |
0e4777df | 16400 | If a function is specified, break at start of code for that function.")); |
e7e0cddf SS |
16401 | set_cmd_completer (c, location_completer); |
16402 | ||
16403 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16404 | dprintf_style_enums, &dprintf_style, _("\ | |
16405 | Set the style of usage for dynamic printf."), _("\ | |
16406 | Show the style of usage for dynamic printf."), _("\ | |
16407 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16408 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16409 | console, as with the \"printf\" command.\n\ | |
16410 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16411 | program; by default printf(), but you can choose a different function or\n\ | |
16412 | output stream by setting dprintf-function and dprintf-channel."), | |
16413 | update_dprintf_commands, NULL, | |
16414 | &setlist, &showlist); | |
16415 | ||
16416 | dprintf_function = xstrdup ("printf"); | |
16417 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16418 | &dprintf_function, _("\ | |
16419 | Set the function to use for dynamic printf"), _("\ | |
16420 | Show the function to use for dynamic printf"), NULL, | |
16421 | update_dprintf_commands, NULL, | |
16422 | &setlist, &showlist); | |
16423 | ||
16424 | dprintf_channel = xstrdup (""); | |
16425 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16426 | &dprintf_channel, _("\ | |
16427 | Set the channel to use for dynamic printf"), _("\ | |
16428 | Show the channel to use for dynamic printf"), NULL, | |
16429 | update_dprintf_commands, NULL, | |
16430 | &setlist, &showlist); | |
16431 | ||
d3ce09f5 SS |
16432 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16433 | &disconnected_dprintf, _("\ | |
16434 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16435 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16436 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16437 | even if GDB disconnects or detaches from the target."), | |
16438 | NULL, | |
16439 | NULL, | |
16440 | &setlist, &showlist); | |
16441 | ||
16442 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16443 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16444 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16445 | ||
765dc015 | 16446 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16447 | |
16448 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16449 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16450 | } |