Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
618f726f | 3 | Copyright (C) 1986-2016 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" |
cfc31633 | 71 | #include "thread-fsm.h" |
5d5658a1 | 72 | #include "tid-parse.h" |
d3ce09f5 | 73 | |
1042e4c0 SS |
74 | /* readline include files */ |
75 | #include "readline/readline.h" | |
76 | #include "readline/history.h" | |
77 | ||
78 | /* readline defines this. */ | |
79 | #undef savestring | |
80 | ||
034dad6f | 81 | #include "mi/mi-common.h" |
6dddc817 | 82 | #include "extension.h" |
325fac50 | 83 | #include <algorithm> |
104c1213 | 84 | |
e7e8980f YQ |
85 | /* Enums for exception-handling support. */ |
86 | enum exception_event_kind | |
87 | { | |
88 | EX_EVENT_THROW, | |
591f19e8 | 89 | EX_EVENT_RETHROW, |
e7e8980f YQ |
90 | EX_EVENT_CATCH |
91 | }; | |
92 | ||
4a64f543 | 93 | /* Prototypes for local functions. */ |
c906108c | 94 | |
a14ed312 | 95 | static void enable_delete_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | static void enable_once_command (char *, int); |
c906108c | 98 | |
816338b5 SS |
99 | static void enable_count_command (char *, int); |
100 | ||
a14ed312 | 101 | static void disable_command (char *, int); |
c906108c | 102 | |
a14ed312 | 103 | static void enable_command (char *, int); |
c906108c | 104 | |
896b6bda PA |
105 | static void map_breakpoint_numbers (const char *, |
106 | void (*) (struct breakpoint *, | |
107 | void *), | |
95a42b64 | 108 | void *); |
c906108c | 109 | |
a14ed312 | 110 | static void ignore_command (char *, int); |
c906108c | 111 | |
4efb68b1 | 112 | static int breakpoint_re_set_one (void *); |
c906108c | 113 | |
348d480f PA |
114 | static void breakpoint_re_set_default (struct breakpoint *); |
115 | ||
f00aae0f KS |
116 | static void |
117 | create_sals_from_location_default (const struct event_location *location, | |
118 | struct linespec_result *canonical, | |
119 | enum bptype type_wanted); | |
983af33b SDJ |
120 | |
121 | static void create_breakpoints_sal_default (struct gdbarch *, | |
122 | struct linespec_result *, | |
e7e0cddf | 123 | char *, char *, enum bptype, |
983af33b SDJ |
124 | enum bpdisp, int, int, |
125 | int, | |
126 | const struct breakpoint_ops *, | |
44f238bb | 127 | int, int, int, unsigned); |
983af33b | 128 | |
f00aae0f KS |
129 | static void decode_location_default (struct breakpoint *b, |
130 | const struct event_location *location, | |
c2f4122d | 131 | struct program_space *search_pspace, |
f00aae0f | 132 | struct symtabs_and_lines *sals); |
983af33b | 133 | |
a14ed312 | 134 | static void clear_command (char *, int); |
c906108c | 135 | |
a14ed312 | 136 | static void catch_command (char *, int); |
c906108c | 137 | |
a9634178 | 138 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 139 | |
98deb0da | 140 | static void break_command_1 (char *, int, int); |
c906108c | 141 | |
a14ed312 | 142 | static void mention (struct breakpoint *); |
c906108c | 143 | |
348d480f PA |
144 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
145 | enum bptype, | |
c0a91b2b | 146 | const struct breakpoint_ops *); |
3742cc8b YQ |
147 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
148 | const struct symtab_and_line *); | |
149 | ||
4a64f543 MS |
150 | /* This function is used in gdbtk sources and thus can not be made |
151 | static. */ | |
63c252f8 | 152 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 153 | struct symtab_and_line, |
c0a91b2b TT |
154 | enum bptype, |
155 | const struct breakpoint_ops *); | |
c906108c | 156 | |
06edf0c0 PA |
157 | static struct breakpoint * |
158 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
159 | enum bptype type, | |
a1aa2221 LM |
160 | const struct breakpoint_ops *ops, |
161 | int loc_enabled); | |
06edf0c0 | 162 | |
76897487 KB |
163 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
164 | ||
a6d9a66e UW |
165 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
166 | CORE_ADDR bpaddr, | |
88f7da05 | 167 | enum bptype bptype); |
76897487 | 168 | |
6c95b8df PA |
169 | static void describe_other_breakpoints (struct gdbarch *, |
170 | struct program_space *, CORE_ADDR, | |
5af949e3 | 171 | struct obj_section *, int); |
c906108c | 172 | |
85d721b8 PA |
173 | static int watchpoint_locations_match (struct bp_location *loc1, |
174 | struct bp_location *loc2); | |
175 | ||
f1310107 TJB |
176 | static int breakpoint_location_address_match (struct bp_location *bl, |
177 | struct address_space *aspace, | |
178 | CORE_ADDR addr); | |
179 | ||
d35ae833 PA |
180 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
181 | struct address_space *, | |
182 | CORE_ADDR, int); | |
183 | ||
a14ed312 | 184 | static void breakpoints_info (char *, int); |
c906108c | 185 | |
d77f58be SS |
186 | static void watchpoints_info (char *, int); |
187 | ||
e5a67952 MS |
188 | static int breakpoint_1 (char *, int, |
189 | int (*) (const struct breakpoint *)); | |
c906108c | 190 | |
4efb68b1 | 191 | static int breakpoint_cond_eval (void *); |
c906108c | 192 | |
4efb68b1 | 193 | static void cleanup_executing_breakpoints (void *); |
c906108c | 194 | |
a14ed312 | 195 | static void commands_command (char *, int); |
c906108c | 196 | |
a14ed312 | 197 | static void condition_command (char *, int); |
c906108c | 198 | |
834c0d03 | 199 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 200 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 201 | |
e514a9d6 | 202 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 203 | |
4efb68b1 | 204 | static int watchpoint_check (void *); |
c906108c | 205 | |
a14ed312 | 206 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 207 | |
a14ed312 | 208 | static int hw_breakpoint_used_count (void); |
c906108c | 209 | |
a1398e0c PA |
210 | static int hw_watchpoint_use_count (struct breakpoint *); |
211 | ||
212 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
213 | enum bptype type, | |
214 | int *other_type_used); | |
c906108c | 215 | |
a14ed312 | 216 | static void hbreak_command (char *, int); |
c906108c | 217 | |
a14ed312 | 218 | static void thbreak_command (char *, int); |
c906108c | 219 | |
816338b5 SS |
220 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
221 | int count); | |
c906108c | 222 | |
a14ed312 | 223 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 224 | |
a14ed312 | 225 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 226 | |
a14ed312 | 227 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 228 | |
a14ed312 | 229 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 230 | |
fe3f5fa8 | 231 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
232 | static void incref_bp_location (struct bp_location *loc); |
233 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 234 | |
39d61571 | 235 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 236 | |
44702360 PA |
237 | /* update_global_location_list's modes of operation wrt to whether to |
238 | insert locations now. */ | |
239 | enum ugll_insert_mode | |
240 | { | |
241 | /* Don't insert any breakpoint locations into the inferior, only | |
242 | remove already-inserted locations that no longer should be | |
243 | inserted. Functions that delete a breakpoint or breakpoints | |
244 | should specify this mode, so that deleting a breakpoint doesn't | |
245 | have the side effect of inserting the locations of other | |
246 | breakpoints that are marked not-inserted, but should_be_inserted | |
247 | returns true on them. | |
248 | ||
249 | This behavior is useful is situations close to tear-down -- e.g., | |
250 | after an exec, while the target still has execution, but | |
251 | breakpoint shadows of the previous executable image should *NOT* | |
252 | be restored to the new image; or before detaching, where the | |
253 | target still has execution and wants to delete breakpoints from | |
254 | GDB's lists, and all breakpoints had already been removed from | |
255 | the inferior. */ | |
256 | UGLL_DONT_INSERT, | |
257 | ||
a25a5a45 PA |
258 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
259 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
260 | UGLL_MAY_INSERT, |
261 | ||
a25a5a45 PA |
262 | /* Insert locations now, irrespective of |
263 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
264 | stopped right now, and the user did "continue". We need to | |
265 | insert breakpoints _before_ resuming the target, but | |
266 | UGLL_MAY_INSERT wouldn't insert them, because | |
267 | breakpoints_should_be_inserted_now returns false at that point, | |
268 | as no thread is running yet. */ | |
04086b45 | 269 | UGLL_INSERT |
44702360 PA |
270 | }; |
271 | ||
272 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 273 | |
44702360 | 274 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 275 | |
d77f58be | 276 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
277 | |
278 | static void insert_breakpoint_locations (void); | |
a5606eee | 279 | |
1042e4c0 SS |
280 | static void tracepoints_info (char *, int); |
281 | ||
282 | static void delete_trace_command (char *, int); | |
283 | ||
284 | static void enable_trace_command (char *, int); | |
285 | ||
286 | static void disable_trace_command (char *, int); | |
287 | ||
288 | static void trace_pass_command (char *, int); | |
289 | ||
558a9d82 YQ |
290 | static void set_tracepoint_count (int num); |
291 | ||
9c06b0b4 TJB |
292 | static int is_masked_watchpoint (const struct breakpoint *b); |
293 | ||
b775012e LM |
294 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
295 | ||
983af33b SDJ |
296 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
297 | otherwise. */ | |
298 | ||
299 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 300 | |
2060206e PA |
301 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
302 | that are implemented on top of software or hardware breakpoints | |
303 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
304 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
305 | ||
306 | /* Internal breakpoints class type. */ | |
06edf0c0 | 307 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
308 | |
309 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
310 | static struct breakpoint_ops momentary_breakpoint_ops; |
311 | ||
e2e4d78b JK |
312 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
313 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
314 | ||
2060206e PA |
315 | /* The breakpoint_ops structure to be used in regular user created |
316 | breakpoints. */ | |
317 | struct breakpoint_ops bkpt_breakpoint_ops; | |
318 | ||
55aa24fb SDJ |
319 | /* Breakpoints set on probes. */ |
320 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
321 | ||
e7e0cddf | 322 | /* Dynamic printf class type. */ |
c5867ab6 | 323 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 324 | |
d3ce09f5 SS |
325 | /* The style in which to perform a dynamic printf. This is a user |
326 | option because different output options have different tradeoffs; | |
327 | if GDB does the printing, there is better error handling if there | |
328 | is a problem with any of the arguments, but using an inferior | |
329 | function lets you have special-purpose printers and sending of | |
330 | output to the same place as compiled-in print functions. */ | |
331 | ||
332 | static const char dprintf_style_gdb[] = "gdb"; | |
333 | static const char dprintf_style_call[] = "call"; | |
334 | static const char dprintf_style_agent[] = "agent"; | |
335 | static const char *const dprintf_style_enums[] = { | |
336 | dprintf_style_gdb, | |
337 | dprintf_style_call, | |
338 | dprintf_style_agent, | |
339 | NULL | |
340 | }; | |
341 | static const char *dprintf_style = dprintf_style_gdb; | |
342 | ||
343 | /* The function to use for dynamic printf if the preferred style is to | |
344 | call into the inferior. The value is simply a string that is | |
345 | copied into the command, so it can be anything that GDB can | |
346 | evaluate to a callable address, not necessarily a function name. */ | |
347 | ||
348 | static char *dprintf_function = ""; | |
349 | ||
350 | /* The channel to use for dynamic printf if the preferred style is to | |
351 | call into the inferior; if a nonempty string, it will be passed to | |
352 | the call as the first argument, with the format string as the | |
353 | second. As with the dprintf function, this can be anything that | |
354 | GDB knows how to evaluate, so in addition to common choices like | |
355 | "stderr", this could be an app-specific expression like | |
356 | "mystreams[curlogger]". */ | |
357 | ||
358 | static char *dprintf_channel = ""; | |
359 | ||
360 | /* True if dprintf commands should continue to operate even if GDB | |
361 | has disconnected. */ | |
362 | static int disconnected_dprintf = 1; | |
363 | ||
5cea2a26 PA |
364 | /* A reference-counted struct command_line. This lets multiple |
365 | breakpoints share a single command list. */ | |
366 | struct counted_command_line | |
367 | { | |
368 | /* The reference count. */ | |
369 | int refc; | |
370 | ||
371 | /* The command list. */ | |
372 | struct command_line *commands; | |
373 | }; | |
374 | ||
375 | struct command_line * | |
376 | breakpoint_commands (struct breakpoint *b) | |
377 | { | |
378 | return b->commands ? b->commands->commands : NULL; | |
379 | } | |
3daf8fe5 | 380 | |
f3b1572e PA |
381 | /* Flag indicating that a command has proceeded the inferior past the |
382 | current breakpoint. */ | |
383 | ||
384 | static int breakpoint_proceeded; | |
385 | ||
956a9fb9 | 386 | const char * |
2cec12e5 AR |
387 | bpdisp_text (enum bpdisp disp) |
388 | { | |
4a64f543 MS |
389 | /* NOTE: the following values are a part of MI protocol and |
390 | represent values of 'disp' field returned when inferior stops at | |
391 | a breakpoint. */ | |
bc043ef3 | 392 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 393 | |
2cec12e5 AR |
394 | return bpdisps[(int) disp]; |
395 | } | |
c906108c | 396 | |
4a64f543 | 397 | /* Prototypes for exported functions. */ |
c906108c | 398 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 399 | if such is available. */ |
c906108c SS |
400 | static int can_use_hw_watchpoints; |
401 | ||
920d2a44 AC |
402 | static void |
403 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
404 | struct cmd_list_element *c, | |
405 | const char *value) | |
406 | { | |
3e43a32a MS |
407 | fprintf_filtered (file, |
408 | _("Debugger's willingness to use " | |
409 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
410 | value); |
411 | } | |
412 | ||
fa8d40ab JJ |
413 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
414 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 415 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
416 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
417 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
418 | static void |
419 | show_pending_break_support (struct ui_file *file, int from_tty, | |
420 | struct cmd_list_element *c, | |
421 | const char *value) | |
422 | { | |
3e43a32a MS |
423 | fprintf_filtered (file, |
424 | _("Debugger's behavior regarding " | |
425 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
426 | value); |
427 | } | |
fa8d40ab | 428 | |
765dc015 | 429 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 430 | set with "break" but falling in read-only memory. |
765dc015 VP |
431 | If 0, gdb will warn about such breakpoints, but won't automatically |
432 | use hardware breakpoints. */ | |
433 | static int automatic_hardware_breakpoints; | |
434 | static void | |
435 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
436 | struct cmd_list_element *c, | |
437 | const char *value) | |
438 | { | |
3e43a32a MS |
439 | fprintf_filtered (file, |
440 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
441 | value); |
442 | } | |
443 | ||
a25a5a45 PA |
444 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
445 | stopped, and immediately inserts any new breakpoints as soon as | |
446 | they're created. If off (default), GDB keeps breakpoints off of | |
447 | the target as long as possible. That is, it delays inserting | |
448 | breakpoints until the next resume, and removes them again when the | |
449 | target fully stops. This is a bit safer in case GDB crashes while | |
450 | processing user input. */ | |
451 | static int always_inserted_mode = 0; | |
72d0e2c5 | 452 | |
33e5cbd6 | 453 | static void |
74960c60 | 454 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 455 | struct cmd_list_element *c, const char *value) |
74960c60 | 456 | { |
a25a5a45 PA |
457 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
458 | value); | |
74960c60 VP |
459 | } |
460 | ||
b57bacec PA |
461 | /* See breakpoint.h. */ |
462 | ||
33e5cbd6 | 463 | int |
a25a5a45 | 464 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 465 | { |
a25a5a45 PA |
466 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
467 | { | |
468 | /* If breakpoints are global, they should be inserted even if no | |
469 | thread under gdb's control is running, or even if there are | |
470 | no threads under GDB's control yet. */ | |
471 | return 1; | |
472 | } | |
473 | else if (target_has_execution) | |
474 | { | |
372316f1 PA |
475 | struct thread_info *tp; |
476 | ||
a25a5a45 PA |
477 | if (always_inserted_mode) |
478 | { | |
479 | /* The user wants breakpoints inserted even if all threads | |
480 | are stopped. */ | |
481 | return 1; | |
482 | } | |
483 | ||
b57bacec PA |
484 | if (threads_are_executing ()) |
485 | return 1; | |
372316f1 PA |
486 | |
487 | /* Don't remove breakpoints yet if, even though all threads are | |
488 | stopped, we still have events to process. */ | |
489 | ALL_NON_EXITED_THREADS (tp) | |
490 | if (tp->resumed | |
491 | && tp->suspend.waitstatus_pending_p) | |
492 | return 1; | |
a25a5a45 PA |
493 | } |
494 | return 0; | |
33e5cbd6 | 495 | } |
765dc015 | 496 | |
b775012e LM |
497 | static const char condition_evaluation_both[] = "host or target"; |
498 | ||
499 | /* Modes for breakpoint condition evaluation. */ | |
500 | static const char condition_evaluation_auto[] = "auto"; | |
501 | static const char condition_evaluation_host[] = "host"; | |
502 | static const char condition_evaluation_target[] = "target"; | |
503 | static const char *const condition_evaluation_enums[] = { | |
504 | condition_evaluation_auto, | |
505 | condition_evaluation_host, | |
506 | condition_evaluation_target, | |
507 | NULL | |
508 | }; | |
509 | ||
510 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
511 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
512 | ||
513 | /* Global that we use to display information to the user (gets its value from | |
514 | condition_evaluation_mode_1. */ | |
515 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
516 | ||
517 | /* Translate a condition evaluation mode MODE into either "host" | |
518 | or "target". This is used mostly to translate from "auto" to the | |
519 | real setting that is being used. It returns the translated | |
520 | evaluation mode. */ | |
521 | ||
522 | static const char * | |
523 | translate_condition_evaluation_mode (const char *mode) | |
524 | { | |
525 | if (mode == condition_evaluation_auto) | |
526 | { | |
527 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
528 | return condition_evaluation_target; | |
529 | else | |
530 | return condition_evaluation_host; | |
531 | } | |
532 | else | |
533 | return mode; | |
534 | } | |
535 | ||
536 | /* Discovers what condition_evaluation_auto translates to. */ | |
537 | ||
538 | static const char * | |
539 | breakpoint_condition_evaluation_mode (void) | |
540 | { | |
541 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
542 | } | |
543 | ||
544 | /* Return true if GDB should evaluate breakpoint conditions or false | |
545 | otherwise. */ | |
546 | ||
547 | static int | |
548 | gdb_evaluates_breakpoint_condition_p (void) | |
549 | { | |
550 | const char *mode = breakpoint_condition_evaluation_mode (); | |
551 | ||
552 | return (mode == condition_evaluation_host); | |
553 | } | |
554 | ||
a14ed312 | 555 | void _initialize_breakpoint (void); |
c906108c | 556 | |
c906108c SS |
557 | /* Are we executing breakpoint commands? */ |
558 | static int executing_breakpoint_commands; | |
559 | ||
c02f5703 MS |
560 | /* Are overlay event breakpoints enabled? */ |
561 | static int overlay_events_enabled; | |
562 | ||
e09342b5 TJB |
563 | /* See description in breakpoint.h. */ |
564 | int target_exact_watchpoints = 0; | |
565 | ||
c906108c | 566 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 567 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 568 | current breakpoint. */ |
c906108c | 569 | |
5c44784c | 570 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 571 | |
5c44784c JM |
572 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
573 | for (B = breakpoint_chain; \ | |
574 | B ? (TMP=B->next, 1): 0; \ | |
575 | B = TMP) | |
c906108c | 576 | |
4a64f543 MS |
577 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
578 | not provided so update_global_location_list must not be called | |
579 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 580 | |
876fa593 JK |
581 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
582 | for (BP_TMP = bp_location; \ | |
583 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
584 | BP_TMP++) | |
7cc221ef | 585 | |
b775012e LM |
586 | /* Iterates through locations with address ADDRESS for the currently selected |
587 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
588 | to where the loop should start from. | |
589 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
590 | appropriate location to start with. */ | |
591 | ||
592 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
593 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
594 | BP_LOCP_TMP = BP_LOCP_START; \ | |
595 | BP_LOCP_START \ | |
596 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
597 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
598 | BP_LOCP_TMP++) | |
599 | ||
1042e4c0 SS |
600 | /* Iterator for tracepoints only. */ |
601 | ||
602 | #define ALL_TRACEPOINTS(B) \ | |
603 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 604 | if (is_tracepoint (B)) |
1042e4c0 | 605 | |
7cc221ef | 606 | /* Chains of all breakpoints defined. */ |
c906108c SS |
607 | |
608 | struct breakpoint *breakpoint_chain; | |
609 | ||
876fa593 JK |
610 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
611 | ||
612 | static struct bp_location **bp_location; | |
613 | ||
614 | /* Number of elements of BP_LOCATION. */ | |
615 | ||
616 | static unsigned bp_location_count; | |
617 | ||
4a64f543 MS |
618 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
619 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
620 | result from bp_location_has_shadow. You can use it for roughly | |
621 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
622 | an address you need to read. */ | |
876fa593 JK |
623 | |
624 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
625 | ||
4a64f543 MS |
626 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
627 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
628 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
629 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
630 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
631 | |
632 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 633 | |
4a64f543 MS |
634 | /* The locations that no longer correspond to any breakpoint, unlinked |
635 | from bp_location array, but for which a hit may still be reported | |
636 | by a target. */ | |
20874c92 VP |
637 | VEC(bp_location_p) *moribund_locations = NULL; |
638 | ||
c906108c SS |
639 | /* Number of last breakpoint made. */ |
640 | ||
95a42b64 TT |
641 | static int breakpoint_count; |
642 | ||
86b17b60 PA |
643 | /* The value of `breakpoint_count' before the last command that |
644 | created breakpoints. If the last (break-like) command created more | |
645 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
646 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
647 | static int prev_breakpoint_count; | |
c906108c | 648 | |
1042e4c0 SS |
649 | /* Number of last tracepoint made. */ |
650 | ||
95a42b64 | 651 | static int tracepoint_count; |
1042e4c0 | 652 | |
6149aea9 PA |
653 | static struct cmd_list_element *breakpoint_set_cmdlist; |
654 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 655 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 656 | |
badd37ce SDJ |
657 | /* See declaration at breakpoint.h. */ |
658 | ||
659 | struct breakpoint * | |
660 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
661 | void *user_data) | |
662 | { | |
663 | struct breakpoint *b = NULL; | |
664 | ||
665 | ALL_BREAKPOINTS (b) | |
666 | { | |
667 | if (func (b, user_data) != 0) | |
668 | break; | |
669 | } | |
670 | ||
671 | return b; | |
672 | } | |
673 | ||
468d015d JJ |
674 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
675 | static int | |
676 | breakpoint_enabled (struct breakpoint *b) | |
677 | { | |
0d381245 | 678 | return (b->enable_state == bp_enabled); |
468d015d JJ |
679 | } |
680 | ||
c906108c SS |
681 | /* Set breakpoint count to NUM. */ |
682 | ||
95a42b64 | 683 | static void |
fba45db2 | 684 | set_breakpoint_count (int num) |
c906108c | 685 | { |
86b17b60 | 686 | prev_breakpoint_count = breakpoint_count; |
c906108c | 687 | breakpoint_count = num; |
4fa62494 | 688 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
689 | } |
690 | ||
86b17b60 PA |
691 | /* Used by `start_rbreak_breakpoints' below, to record the current |
692 | breakpoint count before "rbreak" creates any breakpoint. */ | |
693 | static int rbreak_start_breakpoint_count; | |
694 | ||
95a42b64 TT |
695 | /* Called at the start an "rbreak" command to record the first |
696 | breakpoint made. */ | |
86b17b60 | 697 | |
95a42b64 TT |
698 | void |
699 | start_rbreak_breakpoints (void) | |
700 | { | |
86b17b60 | 701 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
702 | } |
703 | ||
704 | /* Called at the end of an "rbreak" command to record the last | |
705 | breakpoint made. */ | |
86b17b60 | 706 | |
95a42b64 TT |
707 | void |
708 | end_rbreak_breakpoints (void) | |
709 | { | |
86b17b60 | 710 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
711 | } |
712 | ||
4a64f543 | 713 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
714 | |
715 | void | |
fba45db2 | 716 | clear_breakpoint_hit_counts (void) |
c906108c SS |
717 | { |
718 | struct breakpoint *b; | |
719 | ||
720 | ALL_BREAKPOINTS (b) | |
721 | b->hit_count = 0; | |
722 | } | |
723 | ||
9add0f1b TT |
724 | /* Allocate a new counted_command_line with reference count of 1. |
725 | The new structure owns COMMANDS. */ | |
726 | ||
727 | static struct counted_command_line * | |
728 | alloc_counted_command_line (struct command_line *commands) | |
729 | { | |
8d749320 | 730 | struct counted_command_line *result = XNEW (struct counted_command_line); |
cc59ec59 | 731 | |
9add0f1b TT |
732 | result->refc = 1; |
733 | result->commands = commands; | |
8d749320 | 734 | |
9add0f1b TT |
735 | return result; |
736 | } | |
737 | ||
738 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
739 | ||
740 | static void | |
741 | incref_counted_command_line (struct counted_command_line *cmd) | |
742 | { | |
743 | if (cmd) | |
744 | ++cmd->refc; | |
745 | } | |
746 | ||
747 | /* Decrement reference count. If the reference count reaches 0, | |
748 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
749 | nothing if *CMDP is NULL. */ | |
750 | ||
751 | static void | |
752 | decref_counted_command_line (struct counted_command_line **cmdp) | |
753 | { | |
754 | if (*cmdp) | |
755 | { | |
756 | if (--(*cmdp)->refc == 0) | |
757 | { | |
758 | free_command_lines (&(*cmdp)->commands); | |
759 | xfree (*cmdp); | |
760 | } | |
761 | *cmdp = NULL; | |
762 | } | |
763 | } | |
764 | ||
765 | /* A cleanup function that calls decref_counted_command_line. */ | |
766 | ||
767 | static void | |
768 | do_cleanup_counted_command_line (void *arg) | |
769 | { | |
9a3c8263 | 770 | decref_counted_command_line ((struct counted_command_line **) arg); |
9add0f1b TT |
771 | } |
772 | ||
773 | /* Create a cleanup that calls decref_counted_command_line on the | |
774 | argument. */ | |
775 | ||
776 | static struct cleanup * | |
777 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
778 | { | |
779 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
780 | } | |
781 | ||
c906108c | 782 | \f |
48cb2d85 VP |
783 | /* Return the breakpoint with the specified number, or NULL |
784 | if the number does not refer to an existing breakpoint. */ | |
785 | ||
786 | struct breakpoint * | |
787 | get_breakpoint (int num) | |
788 | { | |
789 | struct breakpoint *b; | |
790 | ||
791 | ALL_BREAKPOINTS (b) | |
792 | if (b->number == num) | |
793 | return b; | |
794 | ||
795 | return NULL; | |
796 | } | |
5c44784c | 797 | |
c906108c | 798 | \f |
adc36818 | 799 | |
b775012e LM |
800 | /* Mark locations as "conditions have changed" in case the target supports |
801 | evaluating conditions on its side. */ | |
802 | ||
803 | static void | |
804 | mark_breakpoint_modified (struct breakpoint *b) | |
805 | { | |
806 | struct bp_location *loc; | |
807 | ||
808 | /* This is only meaningful if the target is | |
809 | evaluating conditions and if the user has | |
810 | opted for condition evaluation on the target's | |
811 | side. */ | |
812 | if (gdb_evaluates_breakpoint_condition_p () | |
813 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
814 | return; | |
815 | ||
816 | if (!is_breakpoint (b)) | |
817 | return; | |
818 | ||
819 | for (loc = b->loc; loc; loc = loc->next) | |
820 | loc->condition_changed = condition_modified; | |
821 | } | |
822 | ||
823 | /* Mark location as "conditions have changed" in case the target supports | |
824 | evaluating conditions on its side. */ | |
825 | ||
826 | static void | |
827 | mark_breakpoint_location_modified (struct bp_location *loc) | |
828 | { | |
829 | /* This is only meaningful if the target is | |
830 | evaluating conditions and if the user has | |
831 | opted for condition evaluation on the target's | |
832 | side. */ | |
833 | if (gdb_evaluates_breakpoint_condition_p () | |
834 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
835 | ||
836 | return; | |
837 | ||
838 | if (!is_breakpoint (loc->owner)) | |
839 | return; | |
840 | ||
841 | loc->condition_changed = condition_modified; | |
842 | } | |
843 | ||
844 | /* Sets the condition-evaluation mode using the static global | |
845 | condition_evaluation_mode. */ | |
846 | ||
847 | static void | |
848 | set_condition_evaluation_mode (char *args, int from_tty, | |
849 | struct cmd_list_element *c) | |
850 | { | |
b775012e LM |
851 | const char *old_mode, *new_mode; |
852 | ||
853 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
854 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
855 | { | |
856 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
857 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
858 | "Using host evaluation mode instead.")); | |
859 | return; | |
860 | } | |
861 | ||
862 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
863 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
864 | ||
abf1152a JK |
865 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
866 | settings was "auto". */ | |
867 | condition_evaluation_mode = condition_evaluation_mode_1; | |
868 | ||
b775012e LM |
869 | /* Only update the mode if the user picked a different one. */ |
870 | if (new_mode != old_mode) | |
871 | { | |
872 | struct bp_location *loc, **loc_tmp; | |
873 | /* If the user switched to a different evaluation mode, we | |
874 | need to synch the changes with the target as follows: | |
875 | ||
876 | "host" -> "target": Send all (valid) conditions to the target. | |
877 | "target" -> "host": Remove all the conditions from the target. | |
878 | */ | |
879 | ||
b775012e LM |
880 | if (new_mode == condition_evaluation_target) |
881 | { | |
882 | /* Mark everything modified and synch conditions with the | |
883 | target. */ | |
884 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
885 | mark_breakpoint_location_modified (loc); | |
886 | } | |
887 | else | |
888 | { | |
889 | /* Manually mark non-duplicate locations to synch conditions | |
890 | with the target. We do this to remove all the conditions the | |
891 | target knows about. */ | |
892 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
893 | if (is_breakpoint (loc->owner) && loc->inserted) | |
894 | loc->needs_update = 1; | |
895 | } | |
896 | ||
897 | /* Do the update. */ | |
44702360 | 898 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
899 | } |
900 | ||
901 | return; | |
902 | } | |
903 | ||
904 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
905 | what "auto" is translating to. */ | |
906 | ||
907 | static void | |
908 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
909 | struct cmd_list_element *c, const char *value) | |
910 | { | |
911 | if (condition_evaluation_mode == condition_evaluation_auto) | |
912 | fprintf_filtered (file, | |
913 | _("Breakpoint condition evaluation " | |
914 | "mode is %s (currently %s).\n"), | |
915 | value, | |
916 | breakpoint_condition_evaluation_mode ()); | |
917 | else | |
918 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
919 | value); | |
920 | } | |
921 | ||
922 | /* A comparison function for bp_location AP and BP that is used by | |
923 | bsearch. This comparison function only cares about addresses, unlike | |
924 | the more general bp_location_compare function. */ | |
925 | ||
926 | static int | |
927 | bp_location_compare_addrs (const void *ap, const void *bp) | |
928 | { | |
9a3c8263 SM |
929 | const struct bp_location *a = *(const struct bp_location **) ap; |
930 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
931 | |
932 | if (a->address == b->address) | |
933 | return 0; | |
934 | else | |
935 | return ((a->address > b->address) - (a->address < b->address)); | |
936 | } | |
937 | ||
938 | /* Helper function to skip all bp_locations with addresses | |
939 | less than ADDRESS. It returns the first bp_location that | |
940 | is greater than or equal to ADDRESS. If none is found, just | |
941 | return NULL. */ | |
942 | ||
943 | static struct bp_location ** | |
944 | get_first_locp_gte_addr (CORE_ADDR address) | |
945 | { | |
946 | struct bp_location dummy_loc; | |
947 | struct bp_location *dummy_locp = &dummy_loc; | |
948 | struct bp_location **locp_found = NULL; | |
949 | ||
950 | /* Initialize the dummy location's address field. */ | |
951 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
952 | dummy_loc.address = address; | |
953 | ||
954 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 SM |
955 | locp_found = ((struct bp_location **) |
956 | bsearch (&dummy_locp, bp_location, bp_location_count, | |
957 | sizeof (struct bp_location **), | |
958 | bp_location_compare_addrs)); | |
b775012e LM |
959 | |
960 | /* Nothing was found, nothing left to do. */ | |
961 | if (locp_found == NULL) | |
962 | return NULL; | |
963 | ||
964 | /* We may have found a location that is at ADDRESS but is not the first in the | |
965 | location's list. Go backwards (if possible) and locate the first one. */ | |
966 | while ((locp_found - 1) >= bp_location | |
967 | && (*(locp_found - 1))->address == address) | |
968 | locp_found--; | |
969 | ||
970 | return locp_found; | |
971 | } | |
972 | ||
adc36818 | 973 | void |
7a26bd4d | 974 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
975 | int from_tty) |
976 | { | |
3a5c3e22 PA |
977 | xfree (b->cond_string); |
978 | b->cond_string = NULL; | |
adc36818 | 979 | |
3a5c3e22 | 980 | if (is_watchpoint (b)) |
adc36818 | 981 | { |
3a5c3e22 PA |
982 | struct watchpoint *w = (struct watchpoint *) b; |
983 | ||
4d01a485 | 984 | w->cond_exp.reset (); |
3a5c3e22 PA |
985 | } |
986 | else | |
987 | { | |
988 | struct bp_location *loc; | |
989 | ||
990 | for (loc = b->loc; loc; loc = loc->next) | |
991 | { | |
4d01a485 | 992 | loc->cond.reset (); |
b775012e LM |
993 | |
994 | /* No need to free the condition agent expression | |
995 | bytecode (if we have one). We will handle this | |
996 | when we go through update_global_location_list. */ | |
3a5c3e22 | 997 | } |
adc36818 | 998 | } |
adc36818 PM |
999 | |
1000 | if (*exp == 0) | |
1001 | { | |
1002 | if (from_tty) | |
1003 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
1004 | } | |
1005 | else | |
1006 | { | |
bbc13ae3 | 1007 | const char *arg = exp; |
cc59ec59 | 1008 | |
adc36818 PM |
1009 | /* I don't know if it matters whether this is the string the user |
1010 | typed in or the decompiled expression. */ | |
1011 | b->cond_string = xstrdup (arg); | |
1012 | b->condition_not_parsed = 0; | |
1013 | ||
1014 | if (is_watchpoint (b)) | |
1015 | { | |
3a5c3e22 PA |
1016 | struct watchpoint *w = (struct watchpoint *) b; |
1017 | ||
adc36818 PM |
1018 | innermost_block = NULL; |
1019 | arg = exp; | |
1bb9788d | 1020 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
1021 | if (*arg) |
1022 | error (_("Junk at end of expression")); | |
3a5c3e22 | 1023 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
1024 | } |
1025 | else | |
1026 | { | |
3a5c3e22 PA |
1027 | struct bp_location *loc; |
1028 | ||
adc36818 PM |
1029 | for (loc = b->loc; loc; loc = loc->next) |
1030 | { | |
1031 | arg = exp; | |
1032 | loc->cond = | |
1bb9788d TT |
1033 | parse_exp_1 (&arg, loc->address, |
1034 | block_for_pc (loc->address), 0); | |
adc36818 PM |
1035 | if (*arg) |
1036 | error (_("Junk at end of expression")); | |
1037 | } | |
1038 | } | |
1039 | } | |
b775012e LM |
1040 | mark_breakpoint_modified (b); |
1041 | ||
8d3788bd | 1042 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
1043 | } |
1044 | ||
d55637df TT |
1045 | /* Completion for the "condition" command. */ |
1046 | ||
1047 | static VEC (char_ptr) * | |
6f937416 PA |
1048 | condition_completer (struct cmd_list_element *cmd, |
1049 | const char *text, const char *word) | |
d55637df | 1050 | { |
6f937416 | 1051 | const char *space; |
d55637df | 1052 | |
6f937416 PA |
1053 | text = skip_spaces_const (text); |
1054 | space = skip_to_space_const (text); | |
d55637df TT |
1055 | if (*space == '\0') |
1056 | { | |
1057 | int len; | |
1058 | struct breakpoint *b; | |
1059 | VEC (char_ptr) *result = NULL; | |
1060 | ||
1061 | if (text[0] == '$') | |
1062 | { | |
1063 | /* We don't support completion of history indices. */ | |
1064 | if (isdigit (text[1])) | |
1065 | return NULL; | |
1066 | return complete_internalvar (&text[1]); | |
1067 | } | |
1068 | ||
1069 | /* We're completing the breakpoint number. */ | |
1070 | len = strlen (text); | |
1071 | ||
1072 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
1073 | { |
1074 | char number[50]; | |
1075 | ||
1076 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1077 | ||
1078 | if (strncmp (number, text, len) == 0) | |
1079 | VEC_safe_push (char_ptr, result, xstrdup (number)); | |
1080 | } | |
d55637df TT |
1081 | |
1082 | return result; | |
1083 | } | |
1084 | ||
1085 | /* We're completing the expression part. */ | |
6f937416 | 1086 | text = skip_spaces_const (space); |
d55637df TT |
1087 | return expression_completer (cmd, text, word); |
1088 | } | |
1089 | ||
c906108c SS |
1090 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1091 | ||
1092 | static void | |
fba45db2 | 1093 | condition_command (char *arg, int from_tty) |
c906108c | 1094 | { |
52f0bd74 | 1095 | struct breakpoint *b; |
c906108c | 1096 | char *p; |
52f0bd74 | 1097 | int bnum; |
c906108c SS |
1098 | |
1099 | if (arg == 0) | |
e2e0b3e5 | 1100 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1101 | |
1102 | p = arg; | |
1103 | bnum = get_number (&p); | |
5c44784c | 1104 | if (bnum == 0) |
8a3fe4f8 | 1105 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1106 | |
1107 | ALL_BREAKPOINTS (b) | |
1108 | if (b->number == bnum) | |
2f069f6f | 1109 | { |
6dddc817 DE |
1110 | /* Check if this breakpoint has a "stop" method implemented in an |
1111 | extension language. This method and conditions entered into GDB | |
1112 | from the CLI are mutually exclusive. */ | |
1113 | const struct extension_language_defn *extlang | |
1114 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1115 | ||
1116 | if (extlang != NULL) | |
1117 | { | |
1118 | error (_("Only one stop condition allowed. There is currently" | |
1119 | " a %s stop condition defined for this breakpoint."), | |
1120 | ext_lang_capitalized_name (extlang)); | |
1121 | } | |
2566ad2d | 1122 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1123 | |
1124 | if (is_breakpoint (b)) | |
44702360 | 1125 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1126 | |
2f069f6f JB |
1127 | return; |
1128 | } | |
c906108c | 1129 | |
8a3fe4f8 | 1130 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1131 | } |
1132 | ||
a7bdde9e VP |
1133 | /* Check that COMMAND do not contain commands that are suitable |
1134 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1135 | Throw if any such commands is found. */ |
1136 | ||
a7bdde9e VP |
1137 | static void |
1138 | check_no_tracepoint_commands (struct command_line *commands) | |
1139 | { | |
1140 | struct command_line *c; | |
cc59ec59 | 1141 | |
a7bdde9e VP |
1142 | for (c = commands; c; c = c->next) |
1143 | { | |
1144 | int i; | |
1145 | ||
1146 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1147 | error (_("The 'while-stepping' command can " |
1148 | "only be used for tracepoints")); | |
a7bdde9e VP |
1149 | |
1150 | for (i = 0; i < c->body_count; ++i) | |
1151 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1152 | ||
1153 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1154 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1155 | command directly. */ |
1156 | if (strstr (c->line, "collect ") == c->line) | |
1157 | error (_("The 'collect' command can only be used for tracepoints")); | |
1158 | ||
51661e93 VP |
1159 | if (strstr (c->line, "teval ") == c->line) |
1160 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1161 | } |
1162 | } | |
1163 | ||
d77f58be SS |
1164 | /* Encapsulate tests for different types of tracepoints. */ |
1165 | ||
d9b3f62e PA |
1166 | static int |
1167 | is_tracepoint_type (enum bptype type) | |
1168 | { | |
1169 | return (type == bp_tracepoint | |
1170 | || type == bp_fast_tracepoint | |
1171 | || type == bp_static_tracepoint); | |
1172 | } | |
1173 | ||
a7bdde9e | 1174 | int |
d77f58be | 1175 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1176 | { |
d9b3f62e | 1177 | return is_tracepoint_type (b->type); |
a7bdde9e | 1178 | } |
d9b3f62e | 1179 | |
e5dd4106 | 1180 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1181 | breakpoint. This function will throw an exception if a problem is |
1182 | found. */ | |
48cb2d85 | 1183 | |
95a42b64 TT |
1184 | static void |
1185 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1186 | struct command_line *commands) | |
48cb2d85 | 1187 | { |
d77f58be | 1188 | if (is_tracepoint (b)) |
a7bdde9e | 1189 | { |
c9a6ce02 | 1190 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1191 | struct command_line *c; |
1192 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1193 | |
1194 | /* Reset the while-stepping step count. The previous commands | |
1195 | might have included a while-stepping action, while the new | |
1196 | ones might not. */ | |
1197 | t->step_count = 0; | |
1198 | ||
1199 | /* We need to verify that each top-level element of commands is | |
1200 | valid for tracepoints, that there's at most one | |
1201 | while-stepping element, and that the while-stepping's body | |
1202 | has valid tracing commands excluding nested while-stepping. | |
1203 | We also need to validate the tracepoint action line in the | |
1204 | context of the tracepoint --- validate_actionline actually | |
1205 | has side effects, like setting the tracepoint's | |
1206 | while-stepping STEP_COUNT, in addition to checking if the | |
1207 | collect/teval actions parse and make sense in the | |
1208 | tracepoint's context. */ | |
a7bdde9e VP |
1209 | for (c = commands; c; c = c->next) |
1210 | { | |
a7bdde9e VP |
1211 | if (c->control_type == while_stepping_control) |
1212 | { | |
1213 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1214 | error (_("The 'while-stepping' command " |
1215 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1216 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1217 | error (_("The 'while-stepping' command " |
1218 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1219 | |
1220 | if (while_stepping) | |
3e43a32a MS |
1221 | error (_("The 'while-stepping' command " |
1222 | "can be used only once")); | |
a7bdde9e VP |
1223 | else |
1224 | while_stepping = c; | |
1225 | } | |
c9a6ce02 PA |
1226 | |
1227 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1228 | } |
1229 | if (while_stepping) | |
1230 | { | |
1231 | struct command_line *c2; | |
1232 | ||
1233 | gdb_assert (while_stepping->body_count == 1); | |
1234 | c2 = while_stepping->body_list[0]; | |
1235 | for (; c2; c2 = c2->next) | |
1236 | { | |
a7bdde9e VP |
1237 | if (c2->control_type == while_stepping_control) |
1238 | error (_("The 'while-stepping' command cannot be nested")); | |
1239 | } | |
1240 | } | |
1241 | } | |
1242 | else | |
1243 | { | |
1244 | check_no_tracepoint_commands (commands); | |
1245 | } | |
95a42b64 TT |
1246 | } |
1247 | ||
0fb4aa4b PA |
1248 | /* Return a vector of all the static tracepoints set at ADDR. The |
1249 | caller is responsible for releasing the vector. */ | |
1250 | ||
1251 | VEC(breakpoint_p) * | |
1252 | static_tracepoints_here (CORE_ADDR addr) | |
1253 | { | |
1254 | struct breakpoint *b; | |
1255 | VEC(breakpoint_p) *found = 0; | |
1256 | struct bp_location *loc; | |
1257 | ||
1258 | ALL_BREAKPOINTS (b) | |
1259 | if (b->type == bp_static_tracepoint) | |
1260 | { | |
1261 | for (loc = b->loc; loc; loc = loc->next) | |
1262 | if (loc->address == addr) | |
1263 | VEC_safe_push(breakpoint_p, found, b); | |
1264 | } | |
1265 | ||
1266 | return found; | |
1267 | } | |
1268 | ||
95a42b64 | 1269 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1270 | validate that only allowed commands are included. */ |
95a42b64 TT |
1271 | |
1272 | void | |
4a64f543 MS |
1273 | breakpoint_set_commands (struct breakpoint *b, |
1274 | struct command_line *commands) | |
95a42b64 TT |
1275 | { |
1276 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1277 | |
9add0f1b TT |
1278 | decref_counted_command_line (&b->commands); |
1279 | b->commands = alloc_counted_command_line (commands); | |
8d3788bd | 1280 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1281 | } |
1282 | ||
45a43567 TT |
1283 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1284 | is not the same as the "silent" that may appear in the breakpoint's | |
1285 | commands. */ | |
1286 | ||
1287 | void | |
1288 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1289 | { | |
1290 | int old_silent = b->silent; | |
1291 | ||
1292 | b->silent = silent; | |
1293 | if (old_silent != silent) | |
8d3788bd | 1294 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1295 | } |
1296 | ||
1297 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1298 | breakpoint work for any thread. */ | |
1299 | ||
1300 | void | |
1301 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1302 | { | |
1303 | int old_thread = b->thread; | |
1304 | ||
1305 | b->thread = thread; | |
1306 | if (old_thread != thread) | |
8d3788bd | 1307 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1308 | } |
1309 | ||
1310 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1311 | breakpoint work for any task. */ | |
1312 | ||
1313 | void | |
1314 | breakpoint_set_task (struct breakpoint *b, int task) | |
1315 | { | |
1316 | int old_task = b->task; | |
1317 | ||
1318 | b->task = task; | |
1319 | if (old_task != task) | |
8d3788bd | 1320 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1321 | } |
1322 | ||
95a42b64 TT |
1323 | void |
1324 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1325 | { |
9a3c8263 | 1326 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1327 | |
6f937416 | 1328 | validate_actionline (line, b); |
a7bdde9e VP |
1329 | } |
1330 | ||
95a42b64 TT |
1331 | /* A structure used to pass information through |
1332 | map_breakpoint_numbers. */ | |
1333 | ||
1334 | struct commands_info | |
1335 | { | |
1336 | /* True if the command was typed at a tty. */ | |
1337 | int from_tty; | |
86b17b60 PA |
1338 | |
1339 | /* The breakpoint range spec. */ | |
896b6bda | 1340 | const char *arg; |
86b17b60 | 1341 | |
95a42b64 TT |
1342 | /* Non-NULL if the body of the commands are being read from this |
1343 | already-parsed command. */ | |
1344 | struct command_line *control; | |
86b17b60 | 1345 | |
95a42b64 TT |
1346 | /* The command lines read from the user, or NULL if they have not |
1347 | yet been read. */ | |
1348 | struct counted_command_line *cmd; | |
1349 | }; | |
1350 | ||
1351 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1352 | commands_command. */ | |
1353 | ||
c906108c | 1354 | static void |
95a42b64 | 1355 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1356 | { |
9a3c8263 | 1357 | struct commands_info *info = (struct commands_info *) data; |
c906108c | 1358 | |
95a42b64 TT |
1359 | if (info->cmd == NULL) |
1360 | { | |
1361 | struct command_line *l; | |
5c44784c | 1362 | |
95a42b64 TT |
1363 | if (info->control != NULL) |
1364 | l = copy_command_lines (info->control->body_list[0]); | |
1365 | else | |
86b17b60 PA |
1366 | { |
1367 | struct cleanup *old_chain; | |
1368 | char *str; | |
c5aa993b | 1369 | |
3e43a32a MS |
1370 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1371 | "%s, one per line."), | |
86b17b60 PA |
1372 | info->arg); |
1373 | ||
1374 | old_chain = make_cleanup (xfree, str); | |
1375 | ||
1376 | l = read_command_lines (str, | |
1377 | info->from_tty, 1, | |
d77f58be | 1378 | (is_tracepoint (b) |
86b17b60 PA |
1379 | ? check_tracepoint_command : 0), |
1380 | b); | |
1381 | ||
1382 | do_cleanups (old_chain); | |
1383 | } | |
a7bdde9e | 1384 | |
95a42b64 TT |
1385 | info->cmd = alloc_counted_command_line (l); |
1386 | } | |
1387 | ||
1388 | /* If a breakpoint was on the list more than once, we don't need to | |
1389 | do anything. */ | |
1390 | if (b->commands != info->cmd) | |
1391 | { | |
1392 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1393 | incref_counted_command_line (info->cmd); | |
1394 | decref_counted_command_line (&b->commands); | |
1395 | b->commands = info->cmd; | |
8d3788bd | 1396 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1397 | } |
95a42b64 TT |
1398 | } |
1399 | ||
1400 | static void | |
896b6bda | 1401 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1402 | struct command_line *control) |
95a42b64 TT |
1403 | { |
1404 | struct cleanup *cleanups; | |
1405 | struct commands_info info; | |
1406 | ||
1407 | info.from_tty = from_tty; | |
1408 | info.control = control; | |
1409 | info.cmd = NULL; | |
1410 | /* If we read command lines from the user, then `info' will hold an | |
1411 | extra reference to the commands that we must clean up. */ | |
1412 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1413 | ||
896b6bda PA |
1414 | std::string new_arg; |
1415 | ||
95a42b64 TT |
1416 | if (arg == NULL || !*arg) |
1417 | { | |
86b17b60 | 1418 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1419 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1420 | breakpoint_count); | |
95a42b64 | 1421 | else if (breakpoint_count > 0) |
896b6bda | 1422 | new_arg = string_printf ("%d", breakpoint_count); |
95a42b64 | 1423 | } |
9766ced4 | 1424 | else |
896b6bda | 1425 | new_arg = arg; |
86b17b60 | 1426 | |
896b6bda | 1427 | info.arg = new_arg.c_str (); |
95a42b64 | 1428 | |
896b6bda | 1429 | map_breakpoint_numbers (info.arg, do_map_commands_command, &info); |
95a42b64 TT |
1430 | |
1431 | if (info.cmd == NULL) | |
1432 | error (_("No breakpoints specified.")); | |
1433 | ||
1434 | do_cleanups (cleanups); | |
1435 | } | |
1436 | ||
1437 | static void | |
1438 | commands_command (char *arg, int from_tty) | |
1439 | { | |
1440 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1441 | } |
40c03ae8 EZ |
1442 | |
1443 | /* Like commands_command, but instead of reading the commands from | |
1444 | input stream, takes them from an already parsed command structure. | |
1445 | ||
1446 | This is used by cli-script.c to DTRT with breakpoint commands | |
1447 | that are part of if and while bodies. */ | |
1448 | enum command_control_type | |
896b6bda | 1449 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1450 | { |
95a42b64 TT |
1451 | commands_command_1 (arg, 0, cmd); |
1452 | return simple_control; | |
40c03ae8 | 1453 | } |
876fa593 JK |
1454 | |
1455 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1456 | ||
1457 | static int | |
1458 | bp_location_has_shadow (struct bp_location *bl) | |
1459 | { | |
1460 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1461 | return 0; | |
1462 | if (!bl->inserted) | |
1463 | return 0; | |
1464 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1465 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1466 | return 0; |
1467 | return 1; | |
1468 | } | |
1469 | ||
9d497a19 PA |
1470 | /* Update BUF, which is LEN bytes read from the target address |
1471 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1472 | contents. | |
1473 | ||
1474 | If READBUF is not NULL, this buffer must not overlap with the of | |
1475 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1476 | failed assertion internal error will be raised. */ | |
1477 | ||
1478 | static void | |
1479 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1480 | const gdb_byte *writebuf_org, | |
1481 | ULONGEST memaddr, LONGEST len, | |
1482 | struct bp_target_info *target_info, | |
1483 | struct gdbarch *gdbarch) | |
1484 | { | |
1485 | /* Now do full processing of the found relevant range of elements. */ | |
1486 | CORE_ADDR bp_addr = 0; | |
1487 | int bp_size = 0; | |
1488 | int bptoffset = 0; | |
1489 | ||
1490 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1491 | current_program_space->aspace, 0)) | |
1492 | { | |
1493 | /* The breakpoint is inserted in a different address space. */ | |
1494 | return; | |
1495 | } | |
1496 | ||
1497 | /* Addresses and length of the part of the breakpoint that | |
1498 | we need to copy. */ | |
1499 | bp_addr = target_info->placed_address; | |
1500 | bp_size = target_info->shadow_len; | |
1501 | ||
1502 | if (bp_addr + bp_size <= memaddr) | |
1503 | { | |
1504 | /* The breakpoint is entirely before the chunk of memory we are | |
1505 | reading. */ | |
1506 | return; | |
1507 | } | |
1508 | ||
1509 | if (bp_addr >= memaddr + len) | |
1510 | { | |
1511 | /* The breakpoint is entirely after the chunk of memory we are | |
1512 | reading. */ | |
1513 | return; | |
1514 | } | |
1515 | ||
1516 | /* Offset within shadow_contents. */ | |
1517 | if (bp_addr < memaddr) | |
1518 | { | |
1519 | /* Only copy the second part of the breakpoint. */ | |
1520 | bp_size -= memaddr - bp_addr; | |
1521 | bptoffset = memaddr - bp_addr; | |
1522 | bp_addr = memaddr; | |
1523 | } | |
1524 | ||
1525 | if (bp_addr + bp_size > memaddr + len) | |
1526 | { | |
1527 | /* Only copy the first part of the breakpoint. */ | |
1528 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1529 | } | |
1530 | ||
1531 | if (readbuf != NULL) | |
1532 | { | |
1533 | /* Verify that the readbuf buffer does not overlap with the | |
1534 | shadow_contents buffer. */ | |
1535 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1536 | || readbuf >= (target_info->shadow_contents | |
1537 | + target_info->shadow_len)); | |
1538 | ||
1539 | /* Update the read buffer with this inserted breakpoint's | |
1540 | shadow. */ | |
1541 | memcpy (readbuf + bp_addr - memaddr, | |
1542 | target_info->shadow_contents + bptoffset, bp_size); | |
1543 | } | |
1544 | else | |
1545 | { | |
1546 | const unsigned char *bp; | |
0d5ed153 MR |
1547 | CORE_ADDR addr = target_info->reqstd_address; |
1548 | int placed_size; | |
9d497a19 PA |
1549 | |
1550 | /* Update the shadow with what we want to write to memory. */ | |
1551 | memcpy (target_info->shadow_contents + bptoffset, | |
1552 | writebuf_org + bp_addr - memaddr, bp_size); | |
1553 | ||
1554 | /* Determine appropriate breakpoint contents and size for this | |
1555 | address. */ | |
0d5ed153 | 1556 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1557 | |
1558 | /* Update the final write buffer with this inserted | |
1559 | breakpoint's INSN. */ | |
1560 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1561 | } | |
1562 | } | |
1563 | ||
8defab1a | 1564 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1565 | by replacing any memory breakpoints with their shadowed contents. |
1566 | ||
35c63cd8 JB |
1567 | If READBUF is not NULL, this buffer must not overlap with any of |
1568 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1569 | a failed assertion internal error will be raised. | |
1570 | ||
876fa593 | 1571 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1572 | bl->address - bp_location_placed_address_before_address_max |
1573 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1574 | The range we were requested to resolve shadows for is: |
1575 | memaddr ... memaddr + len | |
1576 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1577 | memaddr + len <= (bl->address |
1578 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1579 | and: |
35df4500 | 1580 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1581 | |
8defab1a | 1582 | void |
f0ba3972 PA |
1583 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1584 | const gdb_byte *writebuf_org, | |
1585 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1586 | { |
4a64f543 MS |
1587 | /* Left boundary, right boundary and median element of our binary |
1588 | search. */ | |
876fa593 JK |
1589 | unsigned bc_l, bc_r, bc; |
1590 | ||
4a64f543 MS |
1591 | /* Find BC_L which is a leftmost element which may affect BUF |
1592 | content. It is safe to report lower value but a failure to | |
1593 | report higher one. */ | |
876fa593 JK |
1594 | |
1595 | bc_l = 0; | |
1596 | bc_r = bp_location_count; | |
1597 | while (bc_l + 1 < bc_r) | |
1598 | { | |
35df4500 | 1599 | struct bp_location *bl; |
876fa593 JK |
1600 | |
1601 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1602 | bl = bp_location[bc]; |
876fa593 | 1603 | |
4a64f543 MS |
1604 | /* Check first BL->ADDRESS will not overflow due to the added |
1605 | constant. Then advance the left boundary only if we are sure | |
1606 | the BC element can in no way affect the BUF content (MEMADDR | |
1607 | to MEMADDR + LEN range). | |
876fa593 | 1608 | |
4a64f543 MS |
1609 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1610 | offset so that we cannot miss a breakpoint with its shadow | |
1611 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1612 | |
35df4500 TJB |
1613 | if ((bl->address + bp_location_shadow_len_after_address_max |
1614 | >= bl->address) | |
1615 | && (bl->address + bp_location_shadow_len_after_address_max | |
1616 | <= memaddr)) | |
876fa593 JK |
1617 | bc_l = bc; |
1618 | else | |
1619 | bc_r = bc; | |
1620 | } | |
1621 | ||
128070bb PA |
1622 | /* Due to the binary search above, we need to make sure we pick the |
1623 | first location that's at BC_L's address. E.g., if there are | |
1624 | multiple locations at the same address, BC_L may end up pointing | |
1625 | at a duplicate location, and miss the "master"/"inserted" | |
1626 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1627 | B: | |
1628 | ||
1629 | L1@A, L2@A, L3@B, ... | |
1630 | ||
1631 | BC_L could end up pointing at location L2, while the "master" | |
1632 | location could be L1. Since the `loc->inserted' flag is only set | |
1633 | on "master" locations, we'd forget to restore the shadow of L1 | |
1634 | and L2. */ | |
1635 | while (bc_l > 0 | |
1636 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1637 | bc_l--; | |
1638 | ||
876fa593 JK |
1639 | /* Now do full processing of the found relevant range of elements. */ |
1640 | ||
1641 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1642 | { |
35df4500 | 1643 | struct bp_location *bl = bp_location[bc]; |
876fa593 | 1644 | |
35df4500 TJB |
1645 | /* bp_location array has BL->OWNER always non-NULL. */ |
1646 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1647 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1648 | bl->owner->number); |
ffce0d52 | 1649 | |
e5dd4106 | 1650 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1651 | content. */ |
1652 | ||
35df4500 TJB |
1653 | if (bl->address >= bp_location_placed_address_before_address_max |
1654 | && memaddr + len <= (bl->address | |
1655 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1656 | break; |
1657 | ||
35df4500 | 1658 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1659 | continue; |
6c95b8df | 1660 | |
9d497a19 PA |
1661 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1662 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1663 | } | |
c906108c | 1664 | } |
9d497a19 | 1665 | |
c906108c | 1666 | \f |
c5aa993b | 1667 | |
b775012e LM |
1668 | /* Return true if BPT is either a software breakpoint or a hardware |
1669 | breakpoint. */ | |
1670 | ||
1671 | int | |
1672 | is_breakpoint (const struct breakpoint *bpt) | |
1673 | { | |
1674 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1675 | || bpt->type == bp_hardware_breakpoint |
1676 | || bpt->type == bp_dprintf); | |
b775012e LM |
1677 | } |
1678 | ||
60e1c644 PA |
1679 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1680 | ||
a5606eee | 1681 | static int |
d77f58be | 1682 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1683 | { |
1684 | return (bpt->type == bp_hardware_watchpoint | |
1685 | || bpt->type == bp_read_watchpoint | |
1686 | || bpt->type == bp_access_watchpoint); | |
1687 | } | |
7270d8f2 | 1688 | |
60e1c644 PA |
1689 | /* Return true if BPT is of any watchpoint kind, hardware or |
1690 | software. */ | |
1691 | ||
3a5c3e22 | 1692 | int |
d77f58be | 1693 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1694 | { |
1695 | return (is_hardware_watchpoint (bpt) | |
1696 | || bpt->type == bp_watchpoint); | |
1697 | } | |
1698 | ||
3a5c3e22 PA |
1699 | /* Returns true if the current thread and its running state are safe |
1700 | to evaluate or update watchpoint B. Watchpoints on local | |
1701 | expressions need to be evaluated in the context of the thread that | |
1702 | was current when the watchpoint was created, and, that thread needs | |
1703 | to be stopped to be able to select the correct frame context. | |
1704 | Watchpoints on global expressions can be evaluated on any thread, | |
1705 | and in any state. It is presently left to the target allowing | |
1706 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1707 | |
1708 | static int | |
3a5c3e22 | 1709 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1710 | { |
d0d8b0c6 JK |
1711 | return (b->base.pspace == current_program_space |
1712 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1713 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1714 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1715 | } |
1716 | ||
d0fb5eae JK |
1717 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1718 | associated bp_watchpoint_scope breakpoint. */ | |
1719 | ||
1720 | static void | |
3a5c3e22 | 1721 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1722 | { |
3a5c3e22 | 1723 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1724 | |
1725 | if (b->related_breakpoint != b) | |
1726 | { | |
1727 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1728 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1729 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1730 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1731 | b->related_breakpoint = b; | |
1732 | } | |
1733 | b->disposition = disp_del_at_next_stop; | |
1734 | } | |
1735 | ||
bb9d5f81 PP |
1736 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1737 | watchpoint W. */ | |
1738 | ||
1739 | static struct value * | |
1740 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1741 | { | |
1742 | struct value *bit_val; | |
1743 | ||
1744 | if (val == NULL) | |
1745 | return NULL; | |
1746 | ||
1747 | bit_val = allocate_value (value_type (val)); | |
1748 | ||
1749 | unpack_value_bitfield (bit_val, | |
1750 | w->val_bitpos, | |
1751 | w->val_bitsize, | |
1752 | value_contents_for_printing (val), | |
1753 | value_offset (val), | |
1754 | val); | |
1755 | ||
1756 | return bit_val; | |
1757 | } | |
1758 | ||
c6d81124 PA |
1759 | /* Allocate a dummy location and add it to B, which must be a software |
1760 | watchpoint. This is required because even if a software watchpoint | |
1761 | is not watching any memory, bpstat_stop_status requires a location | |
1762 | to be able to report stops. */ | |
1763 | ||
1764 | static void | |
1765 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1766 | struct program_space *pspace) | |
1767 | { | |
1768 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1769 | ||
1770 | b->loc = allocate_bp_location (b); | |
1771 | b->loc->pspace = pspace; | |
1772 | b->loc->address = -1; | |
1773 | b->loc->length = -1; | |
1774 | } | |
1775 | ||
1776 | /* Returns true if B is a software watchpoint that is not watching any | |
1777 | memory (e.g., "watch $pc"). */ | |
1778 | ||
1779 | static int | |
1780 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1781 | { | |
1782 | return (b->type == bp_watchpoint | |
1783 | && b->loc != NULL | |
1784 | && b->loc->next == NULL | |
1785 | && b->loc->address == -1 | |
1786 | && b->loc->length == -1); | |
1787 | } | |
1788 | ||
567e1b4e JB |
1789 | /* Assuming that B is a watchpoint: |
1790 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1791 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1792 | - Evaluate the condition if there is one, and store the result |
1793 | in b->loc->cond. | |
a5606eee VP |
1794 | - Update the list of values that must be watched in B->loc. |
1795 | ||
4a64f543 MS |
1796 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1797 | nothing. If this is local watchpoint that is out of scope, delete | |
1798 | it. | |
1799 | ||
1800 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1801 | removed + inserted on each stop here. Normal breakpoints must | |
1802 | never be removed because they might be missed by a running thread | |
1803 | when debugging in non-stop mode. On the other hand, hardware | |
1804 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1805 | to each LWP since they are stored in each LWP's hardware debug | |
1806 | registers. Therefore, such LWP must be stopped first in order to | |
1807 | be able to modify its hardware watchpoints. | |
1808 | ||
1809 | Hardware watchpoints must be reset exactly once after being | |
1810 | presented to the user. It cannot be done sooner, because it would | |
1811 | reset the data used to present the watchpoint hit to the user. And | |
1812 | it must not be done later because it could display the same single | |
1813 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1814 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1815 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1816 | not user-visible - its hit is suppressed if the memory content has | |
1817 | not changed. | |
1818 | ||
1819 | The following constraints influence the location where we can reset | |
1820 | hardware watchpoints: | |
1821 | ||
1822 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1823 | called several times when GDB stops. | |
1824 | ||
1825 | [linux] | |
1826 | * Multiple hardware watchpoints can be hit at the same time, | |
1827 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1828 | hit at a time as the reason for stopping, and all the other hits | |
1829 | are presented later, one after the other, each time the user | |
1830 | requests the execution to be resumed. Execution is not resumed | |
1831 | for the threads still having pending hit event stored in | |
1832 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1833 | the inferior on the first stop the thread hit event is kept being | |
1834 | reported from its cached value by linux_nat_stopped_data_address | |
1835 | until the real thread resume happens after the watchpoint gets | |
1836 | presented and thus its LWP_INFO->STATUS gets reset. | |
1837 | ||
1838 | Therefore the hardware watchpoint hit can get safely reset on the | |
1839 | watchpoint removal from inferior. */ | |
a79d3c27 | 1840 | |
b40ce68a | 1841 | static void |
3a5c3e22 | 1842 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1843 | { |
a5606eee | 1844 | int within_current_scope; |
a5606eee | 1845 | struct frame_id saved_frame_id; |
66076460 | 1846 | int frame_saved; |
a5606eee | 1847 | |
f6bc2008 PA |
1848 | /* If this is a local watchpoint, we only want to check if the |
1849 | watchpoint frame is in scope if the current thread is the thread | |
1850 | that was used to create the watchpoint. */ | |
1851 | if (!watchpoint_in_thread_scope (b)) | |
1852 | return; | |
1853 | ||
3a5c3e22 | 1854 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1855 | return; |
1856 | ||
66076460 | 1857 | frame_saved = 0; |
a5606eee VP |
1858 | |
1859 | /* Determine if the watchpoint is within scope. */ | |
1860 | if (b->exp_valid_block == NULL) | |
1861 | within_current_scope = 1; | |
1862 | else | |
1863 | { | |
b5db5dfc UW |
1864 | struct frame_info *fi = get_current_frame (); |
1865 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1866 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1867 | ||
c9cf6e20 MG |
1868 | /* If we're at a point where the stack has been destroyed |
1869 | (e.g. in a function epilogue), unwinding may not work | |
1870 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1871 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1872 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1873 | return; |
66076460 DJ |
1874 | |
1875 | /* Save the current frame's ID so we can restore it after | |
1876 | evaluating the watchpoint expression on its own frame. */ | |
1877 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1878 | took a frame parameter, so that we didn't have to change the | |
1879 | selected frame. */ | |
1880 | frame_saved = 1; | |
1881 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1882 | ||
a5606eee VP |
1883 | fi = frame_find_by_id (b->watchpoint_frame); |
1884 | within_current_scope = (fi != NULL); | |
1885 | if (within_current_scope) | |
1886 | select_frame (fi); | |
1887 | } | |
1888 | ||
b5db5dfc UW |
1889 | /* We don't free locations. They are stored in the bp_location array |
1890 | and update_global_location_list will eventually delete them and | |
1891 | remove breakpoints if needed. */ | |
3a5c3e22 | 1892 | b->base.loc = NULL; |
b5db5dfc | 1893 | |
a5606eee VP |
1894 | if (within_current_scope && reparse) |
1895 | { | |
bbc13ae3 | 1896 | const char *s; |
d63d0675 | 1897 | |
4d01a485 | 1898 | b->exp.reset (); |
d63d0675 | 1899 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1900 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1901 | /* If the meaning of expression itself changed, the old value is |
1902 | no longer relevant. We don't want to report a watchpoint hit | |
1903 | to the user when the old value and the new value may actually | |
1904 | be completely different objects. */ | |
1905 | value_free (b->val); | |
fa4727a6 DJ |
1906 | b->val = NULL; |
1907 | b->val_valid = 0; | |
60e1c644 PA |
1908 | |
1909 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1910 | expression is stored in the breakpoint object, not in the | |
1911 | locations (re)created below. */ | |
3a5c3e22 | 1912 | if (b->base.cond_string != NULL) |
60e1c644 | 1913 | { |
4d01a485 | 1914 | b->cond_exp.reset (); |
60e1c644 | 1915 | |
3a5c3e22 | 1916 | s = b->base.cond_string; |
1bb9788d | 1917 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1918 | } |
a5606eee | 1919 | } |
a5606eee VP |
1920 | |
1921 | /* If we failed to parse the expression, for example because | |
1922 | it refers to a global variable in a not-yet-loaded shared library, | |
1923 | don't try to insert watchpoint. We don't automatically delete | |
1924 | such watchpoint, though, since failure to parse expression | |
1925 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1926 | if (!target_has_execution) |
2d134ed3 PA |
1927 | { |
1928 | /* Without execution, memory can't change. No use to try and | |
1929 | set watchpoint locations. The watchpoint will be reset when | |
1930 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1931 | if (!can_use_hw_watchpoints) |
1932 | { | |
1933 | if (b->base.ops->works_in_software_mode (&b->base)) | |
1934 | b->base.type = bp_watchpoint; | |
1935 | else | |
638aa5a1 AB |
1936 | error (_("Can't set read/access watchpoint when " |
1937 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1938 | } |
2d134ed3 PA |
1939 | } |
1940 | else if (within_current_scope && b->exp) | |
a5606eee | 1941 | { |
0cf6dd15 | 1942 | int pc = 0; |
fa4727a6 | 1943 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1944 | struct program_space *frame_pspace; |
a5606eee | 1945 | |
4d01a485 | 1946 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1947 | |
a5606eee VP |
1948 | /* Avoid setting b->val if it's already set. The meaning of |
1949 | b->val is 'the last value' user saw, and we should update | |
1950 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1951 | happens, the code that reports it updates b->val directly. |
1952 | We don't keep track of the memory value for masked | |
1953 | watchpoints. */ | |
3a5c3e22 | 1954 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 | 1955 | { |
bb9d5f81 PP |
1956 | if (b->val_bitsize != 0) |
1957 | { | |
1958 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1959 | if (v != NULL) | |
1960 | release_value (v); | |
1961 | } | |
fa4727a6 DJ |
1962 | b->val = v; |
1963 | b->val_valid = 1; | |
1964 | } | |
a5606eee | 1965 | |
2d134ed3 PA |
1966 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1967 | ||
a5606eee | 1968 | /* Look at each value on the value chain. */ |
9fa40276 | 1969 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1970 | { |
1971 | /* If it's a memory location, and GDB actually needed | |
1972 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1973 | must watch it. If the first value returned is |
1974 | still lazy, that means an error occurred reading it; | |
1975 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1976 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1977 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1978 | { |
1979 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1980 | |
a5606eee VP |
1981 | /* We only watch structs and arrays if user asked |
1982 | for it explicitly, never if they just happen to | |
1983 | appear in the middle of some value chain. */ | |
fa4727a6 | 1984 | if (v == result |
a5606eee VP |
1985 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1986 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1987 | { | |
1988 | CORE_ADDR addr; | |
f486487f | 1989 | enum target_hw_bp_type type; |
a5606eee | 1990 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1991 | int bitpos = 0, bitsize = 0; |
1992 | ||
1993 | if (value_bitsize (v) != 0) | |
1994 | { | |
1995 | /* Extract the bit parameters out from the bitfield | |
1996 | sub-expression. */ | |
1997 | bitpos = value_bitpos (v); | |
1998 | bitsize = value_bitsize (v); | |
1999 | } | |
2000 | else if (v == result && b->val_bitsize != 0) | |
2001 | { | |
2002 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
2003 | lvalue whose bit parameters are saved in the fields | |
2004 | VAL_BITPOS and VAL_BITSIZE. */ | |
2005 | bitpos = b->val_bitpos; | |
2006 | bitsize = b->val_bitsize; | |
2007 | } | |
a5606eee | 2008 | |
42ae5230 | 2009 | addr = value_address (v); |
bb9d5f81 PP |
2010 | if (bitsize != 0) |
2011 | { | |
2012 | /* Skip the bytes that don't contain the bitfield. */ | |
2013 | addr += bitpos / 8; | |
2014 | } | |
2015 | ||
a5606eee | 2016 | type = hw_write; |
3a5c3e22 | 2017 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 2018 | type = hw_read; |
3a5c3e22 | 2019 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 2020 | type = hw_access; |
3a5c3e22 PA |
2021 | |
2022 | loc = allocate_bp_location (&b->base); | |
2023 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
2024 | ; |
2025 | *tmp = loc; | |
a6d9a66e | 2026 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
2027 | |
2028 | loc->pspace = frame_pspace; | |
a5606eee | 2029 | loc->address = addr; |
bb9d5f81 PP |
2030 | |
2031 | if (bitsize != 0) | |
2032 | { | |
2033 | /* Just cover the bytes that make up the bitfield. */ | |
2034 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2035 | } | |
2036 | else | |
2037 | loc->length = TYPE_LENGTH (value_type (v)); | |
2038 | ||
a5606eee VP |
2039 | loc->watchpoint_type = type; |
2040 | } | |
2041 | } | |
9fa40276 TJB |
2042 | } |
2043 | ||
2044 | /* Change the type of breakpoint between hardware assisted or | |
2045 | an ordinary watchpoint depending on the hardware support | |
2046 | and free hardware slots. REPARSE is set when the inferior | |
2047 | is started. */ | |
a9634178 | 2048 | if (reparse) |
9fa40276 | 2049 | { |
e09342b5 | 2050 | int reg_cnt; |
9fa40276 TJB |
2051 | enum bp_loc_type loc_type; |
2052 | struct bp_location *bl; | |
a5606eee | 2053 | |
a9634178 | 2054 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2055 | |
2056 | if (reg_cnt) | |
9fa40276 TJB |
2057 | { |
2058 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2059 | enum bptype type; |
9fa40276 | 2060 | |
a9634178 TJB |
2061 | /* Use an exact watchpoint when there's only one memory region to be |
2062 | watched, and only one debug register is needed to watch it. */ | |
2063 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2064 | ||
9fa40276 | 2065 | /* We need to determine how many resources are already |
e09342b5 TJB |
2066 | used for all other hardware watchpoints plus this one |
2067 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2068 | this watchpoint in as well. */ |
2069 | ||
2070 | /* If this is a software watchpoint, we try to turn it | |
2071 | to a hardware one -- count resources as if B was of | |
2072 | hardware watchpoint type. */ | |
2073 | type = b->base.type; | |
2074 | if (type == bp_watchpoint) | |
2075 | type = bp_hardware_watchpoint; | |
2076 | ||
2077 | /* This watchpoint may or may not have been placed on | |
2078 | the list yet at this point (it won't be in the list | |
2079 | if we're trying to create it for the first time, | |
2080 | through watch_command), so always account for it | |
2081 | manually. */ | |
2082 | ||
2083 | /* Count resources used by all watchpoints except B. */ | |
2084 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
2085 | ||
2086 | /* Add in the resources needed for B. */ | |
2087 | i += hw_watchpoint_use_count (&b->base); | |
2088 | ||
2089 | target_resources_ok | |
2090 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2091 | if (target_resources_ok <= 0) |
a9634178 | 2092 | { |
3a5c3e22 | 2093 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
2094 | |
2095 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2096 | error (_("Target does not support this type of " |
2097 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2098 | else if (target_resources_ok < 0 && !sw_mode) |
2099 | error (_("There are not enough available hardware " | |
2100 | "resources for this watchpoint.")); | |
a1398e0c PA |
2101 | |
2102 | /* Downgrade to software watchpoint. */ | |
2103 | b->base.type = bp_watchpoint; | |
2104 | } | |
2105 | else | |
2106 | { | |
2107 | /* If this was a software watchpoint, we've just | |
2108 | found we have enough resources to turn it to a | |
2109 | hardware watchpoint. Otherwise, this is a | |
2110 | nop. */ | |
2111 | b->base.type = type; | |
a9634178 | 2112 | } |
9fa40276 | 2113 | } |
3a5c3e22 | 2114 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
638aa5a1 AB |
2115 | { |
2116 | if (!can_use_hw_watchpoints) | |
2117 | error (_("Can't set read/access watchpoint when " | |
2118 | "hardware watchpoints are disabled.")); | |
2119 | else | |
2120 | error (_("Expression cannot be implemented with " | |
2121 | "read/access watchpoint.")); | |
2122 | } | |
9fa40276 | 2123 | else |
3a5c3e22 | 2124 | b->base.type = bp_watchpoint; |
9fa40276 | 2125 | |
3a5c3e22 | 2126 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 2127 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 2128 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
2129 | bl->loc_type = loc_type; |
2130 | } | |
2131 | ||
2132 | for (v = val_chain; v; v = next) | |
2133 | { | |
a5606eee VP |
2134 | next = value_next (v); |
2135 | if (v != b->val) | |
2136 | value_free (v); | |
2137 | } | |
2138 | ||
c7437ca6 PA |
2139 | /* If a software watchpoint is not watching any memory, then the |
2140 | above left it without any location set up. But, | |
2141 | bpstat_stop_status requires a location to be able to report | |
2142 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 2143 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c6d81124 | 2144 | software_watchpoint_add_no_memory_location (&b->base, frame_pspace); |
a5606eee VP |
2145 | } |
2146 | else if (!within_current_scope) | |
7270d8f2 | 2147 | { |
ac74f770 MS |
2148 | printf_filtered (_("\ |
2149 | Watchpoint %d deleted because the program has left the block\n\ | |
2150 | in which its expression is valid.\n"), | |
3a5c3e22 | 2151 | b->base.number); |
d0fb5eae | 2152 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2153 | } |
a5606eee VP |
2154 | |
2155 | /* Restore the selected frame. */ | |
66076460 DJ |
2156 | if (frame_saved) |
2157 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2158 | } |
2159 | ||
a5606eee | 2160 | |
74960c60 | 2161 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2162 | inserted in the inferior. We don't differentiate the type of BL's owner |
2163 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2164 | breakpoint_ops is not defined, because in insert_bp_location, | |
2165 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2166 | static int |
35df4500 | 2167 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2168 | { |
35df4500 | 2169 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2170 | return 0; |
2171 | ||
35df4500 | 2172 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2173 | return 0; |
2174 | ||
35df4500 | 2175 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2176 | return 0; |
2177 | ||
f8eba3c6 TT |
2178 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2179 | return 0; | |
2180 | ||
56710373 PA |
2181 | /* This is set for example, when we're attached to the parent of a |
2182 | vfork, and have detached from the child. The child is running | |
2183 | free, and we expect it to do an exec or exit, at which point the | |
2184 | OS makes the parent schedulable again (and the target reports | |
2185 | that the vfork is done). Until the child is done with the shared | |
2186 | memory region, do not insert breakpoints in the parent, otherwise | |
2187 | the child could still trip on the parent's breakpoints. Since | |
2188 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2189 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2190 | return 0; |
2191 | ||
31e77af2 | 2192 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2193 | location, except if the breakpoint is a single-step breakpoint, |
2194 | and the breakpoint's thread is the thread which is stepping past | |
2195 | a breakpoint. */ | |
31e77af2 PA |
2196 | if ((bl->loc_type == bp_loc_software_breakpoint |
2197 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2198 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2199 | bl->address) |
2200 | /* The single-step breakpoint may be inserted at the location | |
2201 | we're trying to step if the instruction branches to itself. | |
2202 | However, the instruction won't be executed at all and it may | |
2203 | break the semantics of the instruction, for example, the | |
2204 | instruction is a conditional branch or updates some flags. | |
2205 | We can't fix it unless GDB is able to emulate the instruction | |
2206 | or switch to displaced stepping. */ | |
2207 | && !(bl->owner->type == bp_single_step | |
2208 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2209 | { |
2210 | if (debug_infrun) | |
2211 | { | |
2212 | fprintf_unfiltered (gdb_stdlog, | |
2213 | "infrun: skipping breakpoint: " | |
2214 | "stepping past insn at: %s\n", | |
2215 | paddress (bl->gdbarch, bl->address)); | |
2216 | } | |
2217 | return 0; | |
2218 | } | |
31e77af2 | 2219 | |
963f9c80 PA |
2220 | /* Don't insert watchpoints if we're trying to step past the |
2221 | instruction that triggered one. */ | |
2222 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2223 | && stepping_past_nonsteppable_watchpoint ()) | |
2224 | { | |
2225 | if (debug_infrun) | |
2226 | { | |
2227 | fprintf_unfiltered (gdb_stdlog, | |
2228 | "infrun: stepping past non-steppable watchpoint. " | |
2229 | "skipping watchpoint at %s:%d\n", | |
2230 | paddress (bl->gdbarch, bl->address), | |
2231 | bl->length); | |
2232 | } | |
2233 | return 0; | |
2234 | } | |
2235 | ||
74960c60 VP |
2236 | return 1; |
2237 | } | |
2238 | ||
934709f0 PW |
2239 | /* Same as should_be_inserted but does the check assuming |
2240 | that the location is not duplicated. */ | |
2241 | ||
2242 | static int | |
2243 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2244 | { | |
2245 | int result; | |
2246 | const int save_duplicate = bl->duplicate; | |
2247 | ||
2248 | bl->duplicate = 0; | |
2249 | result = should_be_inserted (bl); | |
2250 | bl->duplicate = save_duplicate; | |
2251 | return result; | |
2252 | } | |
2253 | ||
b775012e LM |
2254 | /* Parses a conditional described by an expression COND into an |
2255 | agent expression bytecode suitable for evaluation | |
2256 | by the bytecode interpreter. Return NULL if there was | |
2257 | any error during parsing. */ | |
2258 | ||
833177a4 | 2259 | static agent_expr_up |
b775012e LM |
2260 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2261 | { | |
833177a4 | 2262 | if (cond == NULL) |
b775012e LM |
2263 | return NULL; |
2264 | ||
833177a4 PA |
2265 | agent_expr_up aexpr; |
2266 | ||
b775012e LM |
2267 | /* We don't want to stop processing, so catch any errors |
2268 | that may show up. */ | |
492d29ea | 2269 | TRY |
b775012e | 2270 | { |
6c73cd95 | 2271 | aexpr = std::move (gen_eval_for_expr (scope, cond)); |
b775012e LM |
2272 | } |
2273 | ||
492d29ea | 2274 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2275 | { |
2276 | /* If we got here, it means the condition could not be parsed to a valid | |
2277 | bytecode expression and thus can't be evaluated on the target's side. | |
2278 | It's no use iterating through the conditions. */ | |
b775012e | 2279 | } |
492d29ea | 2280 | END_CATCH |
b775012e LM |
2281 | |
2282 | /* We have a valid agent expression. */ | |
2283 | return aexpr; | |
2284 | } | |
2285 | ||
2286 | /* Based on location BL, create a list of breakpoint conditions to be | |
2287 | passed on to the target. If we have duplicated locations with different | |
2288 | conditions, we will add such conditions to the list. The idea is that the | |
2289 | target will evaluate the list of conditions and will only notify GDB when | |
2290 | one of them is true. */ | |
2291 | ||
2292 | static void | |
2293 | build_target_condition_list (struct bp_location *bl) | |
2294 | { | |
2295 | struct bp_location **locp = NULL, **loc2p; | |
2296 | int null_condition_or_parse_error = 0; | |
2297 | int modified = bl->needs_update; | |
2298 | struct bp_location *loc; | |
2299 | ||
8b4f3082 | 2300 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2301 | bl->target_info.conditions.clear (); |
8b4f3082 | 2302 | |
b775012e LM |
2303 | /* This is only meaningful if the target is |
2304 | evaluating conditions and if the user has | |
2305 | opted for condition evaluation on the target's | |
2306 | side. */ | |
2307 | if (gdb_evaluates_breakpoint_condition_p () | |
2308 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2309 | return; | |
2310 | ||
2311 | /* Do a first pass to check for locations with no assigned | |
2312 | conditions or conditions that fail to parse to a valid agent expression | |
2313 | bytecode. If any of these happen, then it's no use to send conditions | |
2314 | to the target since this location will always trigger and generate a | |
2315 | response back to GDB. */ | |
2316 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2317 | { | |
2318 | loc = (*loc2p); | |
2319 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2320 | { | |
2321 | if (modified) | |
2322 | { | |
b775012e LM |
2323 | /* Re-parse the conditions since something changed. In that |
2324 | case we already freed the condition bytecodes (see | |
2325 | force_breakpoint_reinsertion). We just | |
2326 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2327 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2328 | loc->cond.get ()); | |
b775012e LM |
2329 | } |
2330 | ||
2331 | /* If we have a NULL bytecode expression, it means something | |
2332 | went wrong or we have a null condition expression. */ | |
2333 | if (!loc->cond_bytecode) | |
2334 | { | |
2335 | null_condition_or_parse_error = 1; | |
2336 | break; | |
2337 | } | |
2338 | } | |
2339 | } | |
2340 | ||
2341 | /* If any of these happened, it means we will have to evaluate the conditions | |
2342 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2343 | for all the other duplicate locations, thus we free all of them here. | |
2344 | ||
2345 | This is so we have a finer control over which locations' conditions are | |
2346 | being evaluated by GDB or the remote stub. */ | |
2347 | if (null_condition_or_parse_error) | |
2348 | { | |
2349 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2350 | { | |
2351 | loc = (*loc2p); | |
2352 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2353 | { | |
2354 | /* Only go as far as the first NULL bytecode is | |
2355 | located. */ | |
2356 | if (!loc->cond_bytecode) | |
2357 | return; | |
2358 | ||
833177a4 | 2359 | loc->cond_bytecode.reset (); |
b775012e LM |
2360 | } |
2361 | } | |
2362 | } | |
2363 | ||
2364 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2365 | for this location's address. */ | |
2366 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2367 | { | |
2368 | loc = (*loc2p); | |
2369 | if (loc->cond | |
2370 | && is_breakpoint (loc->owner) | |
2371 | && loc->pspace->num == bl->pspace->num | |
2372 | && loc->owner->enable_state == bp_enabled | |
2373 | && loc->enabled) | |
3cde5c42 PA |
2374 | { |
2375 | /* Add the condition to the vector. This will be used later | |
2376 | to send the conditions to the target. */ | |
2377 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2378 | } | |
b775012e LM |
2379 | } |
2380 | ||
2381 | return; | |
2382 | } | |
2383 | ||
d3ce09f5 SS |
2384 | /* Parses a command described by string CMD into an agent expression |
2385 | bytecode suitable for evaluation by the bytecode interpreter. | |
2386 | Return NULL if there was any error during parsing. */ | |
2387 | ||
833177a4 | 2388 | static agent_expr_up |
d3ce09f5 SS |
2389 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2390 | { | |
2391 | struct cleanup *old_cleanups = 0; | |
4d01a485 | 2392 | struct expression **argvec; |
bbc13ae3 KS |
2393 | const char *cmdrest; |
2394 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2395 | struct format_piece *fpieces; |
2396 | int nargs; | |
2397 | struct gdbarch *gdbarch = get_current_arch (); | |
2398 | ||
833177a4 | 2399 | if (cmd == NULL) |
d3ce09f5 SS |
2400 | return NULL; |
2401 | ||
2402 | cmdrest = cmd; | |
2403 | ||
2404 | if (*cmdrest == ',') | |
2405 | ++cmdrest; | |
bbc13ae3 | 2406 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2407 | |
2408 | if (*cmdrest++ != '"') | |
2409 | error (_("No format string following the location")); | |
2410 | ||
2411 | format_start = cmdrest; | |
2412 | ||
2413 | fpieces = parse_format_string (&cmdrest); | |
2414 | ||
2415 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2416 | ||
2417 | format_end = cmdrest; | |
2418 | ||
2419 | if (*cmdrest++ != '"') | |
2420 | error (_("Bad format string, non-terminated '\"'.")); | |
2421 | ||
bbc13ae3 | 2422 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2423 | |
2424 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2425 | error (_("Invalid argument syntax")); | |
2426 | ||
2427 | if (*cmdrest == ',') | |
2428 | cmdrest++; | |
bbc13ae3 | 2429 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2430 | |
2431 | /* For each argument, make an expression. */ | |
2432 | ||
2433 | argvec = (struct expression **) alloca (strlen (cmd) | |
2434 | * sizeof (struct expression *)); | |
2435 | ||
2436 | nargs = 0; | |
2437 | while (*cmdrest != '\0') | |
2438 | { | |
bbc13ae3 | 2439 | const char *cmd1; |
d3ce09f5 SS |
2440 | |
2441 | cmd1 = cmdrest; | |
4d01a485 PA |
2442 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
2443 | argvec[nargs++] = expr.release (); | |
d3ce09f5 SS |
2444 | cmdrest = cmd1; |
2445 | if (*cmdrest == ',') | |
2446 | ++cmdrest; | |
2447 | } | |
2448 | ||
833177a4 PA |
2449 | agent_expr_up aexpr; |
2450 | ||
d3ce09f5 SS |
2451 | /* We don't want to stop processing, so catch any errors |
2452 | that may show up. */ | |
492d29ea | 2453 | TRY |
d3ce09f5 | 2454 | { |
6c73cd95 | 2455 | aexpr = std::move (gen_printf (scope, gdbarch, 0, 0, |
833177a4 PA |
2456 | format_start, format_end - format_start, |
2457 | fpieces, nargs, argvec)); | |
d3ce09f5 | 2458 | } |
492d29ea | 2459 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2460 | { |
2461 | /* If we got here, it means the command could not be parsed to a valid | |
2462 | bytecode expression and thus can't be evaluated on the target's side. | |
2463 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2464 | } |
492d29ea PA |
2465 | END_CATCH |
2466 | ||
2467 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2468 | |
d3ce09f5 SS |
2469 | /* We have a valid agent expression, return it. */ |
2470 | return aexpr; | |
2471 | } | |
2472 | ||
2473 | /* Based on location BL, create a list of breakpoint commands to be | |
2474 | passed on to the target. If we have duplicated locations with | |
2475 | different commands, we will add any such to the list. */ | |
2476 | ||
2477 | static void | |
2478 | build_target_command_list (struct bp_location *bl) | |
2479 | { | |
2480 | struct bp_location **locp = NULL, **loc2p; | |
2481 | int null_command_or_parse_error = 0; | |
2482 | int modified = bl->needs_update; | |
2483 | struct bp_location *loc; | |
2484 | ||
3cde5c42 PA |
2485 | /* Clear commands left over from a previous insert. */ |
2486 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2487 | |
41fac0cf | 2488 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2489 | return; |
2490 | ||
41fac0cf PA |
2491 | /* For now, limit to agent-style dprintf breakpoints. */ |
2492 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2493 | return; |
2494 | ||
41fac0cf PA |
2495 | /* For now, if we have any duplicate location that isn't a dprintf, |
2496 | don't install the target-side commands, as that would make the | |
2497 | breakpoint not be reported to the core, and we'd lose | |
2498 | control. */ | |
2499 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2500 | { | |
2501 | loc = (*loc2p); | |
2502 | if (is_breakpoint (loc->owner) | |
2503 | && loc->pspace->num == bl->pspace->num | |
2504 | && loc->owner->type != bp_dprintf) | |
2505 | return; | |
2506 | } | |
2507 | ||
d3ce09f5 SS |
2508 | /* Do a first pass to check for locations with no assigned |
2509 | conditions or conditions that fail to parse to a valid agent expression | |
2510 | bytecode. If any of these happen, then it's no use to send conditions | |
2511 | to the target since this location will always trigger and generate a | |
2512 | response back to GDB. */ | |
2513 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2514 | { | |
2515 | loc = (*loc2p); | |
2516 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2517 | { | |
2518 | if (modified) | |
2519 | { | |
d3ce09f5 SS |
2520 | /* Re-parse the commands since something changed. In that |
2521 | case we already freed the command bytecodes (see | |
2522 | force_breakpoint_reinsertion). We just | |
2523 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2524 | loc->cmd_bytecode |
2525 | = parse_cmd_to_aexpr (bl->address, | |
2526 | loc->owner->extra_string); | |
d3ce09f5 SS |
2527 | } |
2528 | ||
2529 | /* If we have a NULL bytecode expression, it means something | |
2530 | went wrong or we have a null command expression. */ | |
2531 | if (!loc->cmd_bytecode) | |
2532 | { | |
2533 | null_command_or_parse_error = 1; | |
2534 | break; | |
2535 | } | |
2536 | } | |
2537 | } | |
2538 | ||
2539 | /* If anything failed, then we're not doing target-side commands, | |
2540 | and so clean up. */ | |
2541 | if (null_command_or_parse_error) | |
2542 | { | |
2543 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2544 | { | |
2545 | loc = (*loc2p); | |
2546 | if (is_breakpoint (loc->owner) | |
2547 | && loc->pspace->num == bl->pspace->num) | |
2548 | { | |
2549 | /* Only go as far as the first NULL bytecode is | |
2550 | located. */ | |
40fb6c5e | 2551 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2552 | return; |
2553 | ||
833177a4 | 2554 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2555 | } |
2556 | } | |
2557 | } | |
2558 | ||
2559 | /* No NULL commands or failed bytecode generation. Build a command list | |
2560 | for this location's address. */ | |
2561 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2562 | { | |
2563 | loc = (*loc2p); | |
2564 | if (loc->owner->extra_string | |
2565 | && is_breakpoint (loc->owner) | |
2566 | && loc->pspace->num == bl->pspace->num | |
2567 | && loc->owner->enable_state == bp_enabled | |
2568 | && loc->enabled) | |
3cde5c42 PA |
2569 | { |
2570 | /* Add the command to the vector. This will be used later | |
2571 | to send the commands to the target. */ | |
2572 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2573 | } | |
d3ce09f5 SS |
2574 | } |
2575 | ||
2576 | bl->target_info.persist = 0; | |
2577 | /* Maybe flag this location as persistent. */ | |
2578 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2579 | bl->target_info.persist = 1; | |
2580 | } | |
2581 | ||
833b7ab5 YQ |
2582 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2583 | of breakpoint according to ADDR except single-step breakpoint. | |
2584 | Get the kind of single-step breakpoint according to the current | |
2585 | registers state. */ | |
cd6c3b4f YQ |
2586 | |
2587 | static int | |
2588 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2589 | { | |
833b7ab5 YQ |
2590 | if (bl->owner->type == bp_single_step) |
2591 | { | |
2592 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2593 | struct regcache *regcache; | |
2594 | ||
2595 | regcache = get_thread_regcache (thr->ptid); | |
2596 | ||
2597 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2598 | regcache, addr); | |
2599 | } | |
2600 | else | |
2601 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2602 | } |
2603 | ||
35df4500 TJB |
2604 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2605 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2606 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2607 | Returns 0 for success, 1 if the bp_location type is not supported or |
2608 | -1 for failure. | |
879bfdc2 | 2609 | |
4a64f543 MS |
2610 | NOTE drow/2003-09-09: This routine could be broken down to an |
2611 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2612 | static int |
35df4500 | 2613 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2614 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2615 | int *disabled_breaks, |
dd61ec5c MW |
2616 | int *hw_breakpoint_error, |
2617 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2618 | { |
0000e5cc PA |
2619 | enum errors bp_err = GDB_NO_ERROR; |
2620 | const char *bp_err_message = NULL; | |
879bfdc2 | 2621 | |
b775012e | 2622 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2623 | return 0; |
2624 | ||
35c63cd8 JB |
2625 | /* Note we don't initialize bl->target_info, as that wipes out |
2626 | the breakpoint location's shadow_contents if the breakpoint | |
2627 | is still inserted at that location. This in turn breaks | |
2628 | target_read_memory which depends on these buffers when | |
2629 | a memory read is requested at the breakpoint location: | |
2630 | Once the target_info has been wiped, we fail to see that | |
2631 | we have a breakpoint inserted at that address and thus | |
2632 | read the breakpoint instead of returning the data saved in | |
2633 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2634 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2635 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2636 | bl->target_info.length = bl->length; |
8181d85f | 2637 | |
b775012e LM |
2638 | /* When working with target-side conditions, we must pass all the conditions |
2639 | for the same breakpoint address down to the target since GDB will not | |
2640 | insert those locations. With a list of breakpoint conditions, the target | |
2641 | can decide when to stop and notify GDB. */ | |
2642 | ||
2643 | if (is_breakpoint (bl->owner)) | |
2644 | { | |
2645 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2646 | build_target_command_list (bl); |
2647 | /* Reset the modification marker. */ | |
b775012e LM |
2648 | bl->needs_update = 0; |
2649 | } | |
2650 | ||
35df4500 TJB |
2651 | if (bl->loc_type == bp_loc_software_breakpoint |
2652 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2653 | { |
35df4500 | 2654 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2655 | { |
2656 | /* If the explicitly specified breakpoint type | |
2657 | is not hardware breakpoint, check the memory map to see | |
2658 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2659 | |
765dc015 VP |
2660 | Two important cases are: |
2661 | - location type is not hardware breakpoint, memory | |
2662 | is readonly. We change the type of the location to | |
2663 | hardware breakpoint. | |
4a64f543 MS |
2664 | - location type is hardware breakpoint, memory is |
2665 | read-write. This means we've previously made the | |
2666 | location hardware one, but then the memory map changed, | |
2667 | so we undo. | |
765dc015 | 2668 | |
4a64f543 MS |
2669 | When breakpoints are removed, remove_breakpoints will use |
2670 | location types we've just set here, the only possible | |
2671 | problem is that memory map has changed during running | |
2672 | program, but it's not going to work anyway with current | |
2673 | gdb. */ | |
765dc015 | 2674 | struct mem_region *mr |
0d5ed153 | 2675 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2676 | |
2677 | if (mr) | |
2678 | { | |
2679 | if (automatic_hardware_breakpoints) | |
2680 | { | |
765dc015 VP |
2681 | enum bp_loc_type new_type; |
2682 | ||
2683 | if (mr->attrib.mode != MEM_RW) | |
2684 | new_type = bp_loc_hardware_breakpoint; | |
2685 | else | |
2686 | new_type = bp_loc_software_breakpoint; | |
2687 | ||
35df4500 | 2688 | if (new_type != bl->loc_type) |
765dc015 VP |
2689 | { |
2690 | static int said = 0; | |
cc59ec59 | 2691 | |
35df4500 | 2692 | bl->loc_type = new_type; |
765dc015 VP |
2693 | if (!said) |
2694 | { | |
3e43a32a MS |
2695 | fprintf_filtered (gdb_stdout, |
2696 | _("Note: automatically using " | |
2697 | "hardware breakpoints for " | |
2698 | "read-only addresses.\n")); | |
765dc015 VP |
2699 | said = 1; |
2700 | } | |
2701 | } | |
2702 | } | |
35df4500 | 2703 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2704 | && mr->attrib.mode != MEM_RW) |
2705 | { | |
2706 | fprintf_unfiltered (tmp_error_stream, | |
2707 | _("Cannot insert breakpoint %d.\n" | |
2708 | "Cannot set software breakpoint " | |
2709 | "at read-only address %s\n"), | |
2710 | bl->owner->number, | |
2711 | paddress (bl->gdbarch, bl->address)); | |
2712 | return 1; | |
2713 | } | |
765dc015 VP |
2714 | } |
2715 | } | |
2716 | ||
879bfdc2 DJ |
2717 | /* First check to see if we have to handle an overlay. */ |
2718 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2719 | || bl->section == NULL |
2720 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2721 | { |
2722 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2723 | TRY |
dd61ec5c | 2724 | { |
0000e5cc PA |
2725 | int val; |
2726 | ||
dd61ec5c | 2727 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2728 | if (val) |
2729 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2730 | } |
492d29ea | 2731 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2732 | { |
0000e5cc PA |
2733 | bp_err = e.error; |
2734 | bp_err_message = e.message; | |
dd61ec5c | 2735 | } |
492d29ea | 2736 | END_CATCH |
879bfdc2 DJ |
2737 | } |
2738 | else | |
2739 | { | |
4a64f543 | 2740 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2741 | Shall we set a breakpoint at the LMA? */ |
2742 | if (!overlay_events_enabled) | |
2743 | { | |
2744 | /* Yes -- overlay event support is not active, | |
2745 | so we must try to set a breakpoint at the LMA. | |
2746 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2747 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2748 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2749 | bl->owner->number); |
879bfdc2 DJ |
2750 | else |
2751 | { | |
35df4500 TJB |
2752 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2753 | bl->section); | |
879bfdc2 | 2754 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2755 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2756 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2757 | |
2758 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2759 | TRY |
0000e5cc PA |
2760 | { |
2761 | int val; | |
2762 | ||
579c6ad9 | 2763 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2764 | = breakpoint_kind (bl, &addr); |
2765 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2766 | val = target_insert_breakpoint (bl->gdbarch, |
2767 | &bl->overlay_target_info); | |
2768 | if (val) | |
2769 | bp_err = GENERIC_ERROR; | |
2770 | } | |
492d29ea | 2771 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2772 | { |
2773 | bp_err = e.error; | |
2774 | bp_err_message = e.message; | |
2775 | } | |
492d29ea | 2776 | END_CATCH |
0000e5cc PA |
2777 | |
2778 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2779 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2780 | "Overlay breakpoint %d " |
2781 | "failed: in ROM?\n", | |
35df4500 | 2782 | bl->owner->number); |
879bfdc2 DJ |
2783 | } |
2784 | } | |
2785 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2786 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2787 | { |
2788 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2789 | TRY |
dd61ec5c | 2790 | { |
0000e5cc PA |
2791 | int val; |
2792 | ||
dd61ec5c | 2793 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2794 | if (val) |
2795 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2796 | } |
492d29ea | 2797 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2798 | { |
0000e5cc PA |
2799 | bp_err = e.error; |
2800 | bp_err_message = e.message; | |
dd61ec5c | 2801 | } |
492d29ea | 2802 | END_CATCH |
879bfdc2 DJ |
2803 | } |
2804 | else | |
2805 | { | |
2806 | /* No. This breakpoint will not be inserted. | |
2807 | No error, but do not mark the bp as 'inserted'. */ | |
2808 | return 0; | |
2809 | } | |
2810 | } | |
2811 | ||
0000e5cc | 2812 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2813 | { |
2814 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2815 | |
2816 | /* In some cases, we might not be able to insert a | |
2817 | breakpoint in a shared library that has already been | |
2818 | removed, but we have not yet processed the shlib unload | |
2819 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2820 | breakpoint insertion themselves can't tell why the |
2821 | breakpoint insertion failed (e.g., the remote target | |
2822 | doesn't define error codes), so we must treat generic | |
2823 | errors as memory errors. */ | |
0000e5cc | 2824 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2825 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2826 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2827 | || shared_objfile_contains_address_p (bl->pspace, |
2828 | bl->address))) | |
879bfdc2 | 2829 | { |
4a64f543 | 2830 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2831 | bl->shlib_disabled = 1; |
8d3788bd | 2832 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2833 | if (!*disabled_breaks) |
2834 | { | |
2835 | fprintf_unfiltered (tmp_error_stream, | |
2836 | "Cannot insert breakpoint %d.\n", | |
2837 | bl->owner->number); | |
2838 | fprintf_unfiltered (tmp_error_stream, | |
2839 | "Temporarily disabling shared " | |
2840 | "library breakpoints:\n"); | |
2841 | } | |
2842 | *disabled_breaks = 1; | |
879bfdc2 | 2843 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2844 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2845 | return 0; |
879bfdc2 DJ |
2846 | } |
2847 | else | |
879bfdc2 | 2848 | { |
35df4500 | 2849 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2850 | { |
0000e5cc PA |
2851 | *hw_breakpoint_error = 1; |
2852 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2853 | fprintf_unfiltered (tmp_error_stream, |
2854 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2855 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2856 | if (bp_err_message != NULL) | |
2857 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2858 | } |
2859 | else | |
2860 | { | |
0000e5cc PA |
2861 | if (bp_err_message == NULL) |
2862 | { | |
2863 | char *message | |
2864 | = memory_error_message (TARGET_XFER_E_IO, | |
2865 | bl->gdbarch, bl->address); | |
2866 | struct cleanup *old_chain = make_cleanup (xfree, message); | |
2867 | ||
2868 | fprintf_unfiltered (tmp_error_stream, | |
2869 | "Cannot insert breakpoint %d.\n" | |
2870 | "%s\n", | |
2871 | bl->owner->number, message); | |
2872 | do_cleanups (old_chain); | |
2873 | } | |
2874 | else | |
2875 | { | |
2876 | fprintf_unfiltered (tmp_error_stream, | |
2877 | "Cannot insert breakpoint %d: %s\n", | |
2878 | bl->owner->number, | |
2879 | bp_err_message); | |
2880 | } | |
879bfdc2 | 2881 | } |
0000e5cc | 2882 | return 1; |
879bfdc2 DJ |
2883 | |
2884 | } | |
2885 | } | |
2886 | else | |
35df4500 | 2887 | bl->inserted = 1; |
879bfdc2 | 2888 | |
0000e5cc | 2889 | return 0; |
879bfdc2 DJ |
2890 | } |
2891 | ||
35df4500 | 2892 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2893 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2894 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2895 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2896 | { |
0000e5cc PA |
2897 | int val; |
2898 | ||
77b06cd7 TJB |
2899 | gdb_assert (bl->owner->ops != NULL |
2900 | && bl->owner->ops->insert_location != NULL); | |
2901 | ||
2902 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2903 | |
2904 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2905 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2906 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2907 | { |
2908 | struct bp_location *loc, **loc_temp; | |
2909 | ||
2910 | /* But don't try to insert it, if there's already another | |
2911 | hw_access location that would be considered a duplicate | |
2912 | of this one. */ | |
2913 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2914 | if (loc != bl |
85d721b8 | 2915 | && loc->watchpoint_type == hw_access |
35df4500 | 2916 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2917 | { |
35df4500 TJB |
2918 | bl->duplicate = 1; |
2919 | bl->inserted = 1; | |
2920 | bl->target_info = loc->target_info; | |
2921 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2922 | val = 0; |
2923 | break; | |
2924 | } | |
2925 | ||
2926 | if (val == 1) | |
2927 | { | |
77b06cd7 TJB |
2928 | bl->watchpoint_type = hw_access; |
2929 | val = bl->owner->ops->insert_location (bl); | |
2930 | ||
2931 | if (val) | |
2932 | /* Back to the original value. */ | |
2933 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2934 | } |
2935 | } | |
2936 | ||
35df4500 | 2937 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2938 | } |
2939 | ||
35df4500 | 2940 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2941 | { |
0000e5cc PA |
2942 | int val; |
2943 | ||
77b06cd7 TJB |
2944 | gdb_assert (bl->owner->ops != NULL |
2945 | && bl->owner->ops->insert_location != NULL); | |
2946 | ||
2947 | val = bl->owner->ops->insert_location (bl); | |
2948 | if (val) | |
2949 | { | |
2950 | bl->owner->enable_state = bp_disabled; | |
2951 | ||
2952 | if (val == 1) | |
2953 | warning (_("\ | |
2954 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2955 | of catchpoint."), bl->owner->number); | |
2956 | else | |
2957 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2958 | } | |
2959 | ||
2960 | bl->inserted = (val == 0); | |
1640b821 DJ |
2961 | |
2962 | /* We've already printed an error message if there was a problem | |
2963 | inserting this catchpoint, and we've disabled the catchpoint, | |
2964 | so just return success. */ | |
2965 | return 0; | |
879bfdc2 DJ |
2966 | } |
2967 | ||
2968 | return 0; | |
2969 | } | |
2970 | ||
6c95b8df PA |
2971 | /* This function is called when program space PSPACE is about to be |
2972 | deleted. It takes care of updating breakpoints to not reference | |
2973 | PSPACE anymore. */ | |
2974 | ||
2975 | void | |
2976 | breakpoint_program_space_exit (struct program_space *pspace) | |
2977 | { | |
2978 | struct breakpoint *b, *b_temp; | |
876fa593 | 2979 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2980 | |
2981 | /* Remove any breakpoint that was set through this program space. */ | |
2982 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2983 | { | |
2984 | if (b->pspace == pspace) | |
2985 | delete_breakpoint (b); | |
2986 | } | |
2987 | ||
2988 | /* Breakpoints set through other program spaces could have locations | |
2989 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2990 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2991 | { |
2992 | struct bp_location *tmp; | |
2993 | ||
2994 | if (loc->pspace == pspace) | |
2995 | { | |
2bdf28a0 | 2996 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2997 | if (loc->owner->loc == loc) |
2998 | loc->owner->loc = loc->next; | |
2999 | else | |
3000 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
3001 | if (tmp->next == loc) | |
3002 | { | |
3003 | tmp->next = loc->next; | |
3004 | break; | |
3005 | } | |
3006 | } | |
3007 | } | |
3008 | ||
3009 | /* Now update the global location list to permanently delete the | |
3010 | removed locations above. */ | |
44702360 | 3011 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
3012 | } |
3013 | ||
74960c60 VP |
3014 | /* Make sure all breakpoints are inserted in inferior. |
3015 | Throws exception on any error. | |
3016 | A breakpoint that is already inserted won't be inserted | |
3017 | again, so calling this function twice is safe. */ | |
3018 | void | |
3019 | insert_breakpoints (void) | |
3020 | { | |
3021 | struct breakpoint *bpt; | |
3022 | ||
3023 | ALL_BREAKPOINTS (bpt) | |
3024 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
3025 | { |
3026 | struct watchpoint *w = (struct watchpoint *) bpt; | |
3027 | ||
3028 | update_watchpoint (w, 0 /* don't reparse. */); | |
3029 | } | |
74960c60 | 3030 | |
04086b45 PA |
3031 | /* Updating watchpoints creates new locations, so update the global |
3032 | location list. Explicitly tell ugll to insert locations and | |
3033 | ignore breakpoints_always_inserted_mode. */ | |
3034 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
3035 | } |
3036 | ||
20388dd6 YQ |
3037 | /* Invoke CALLBACK for each of bp_location. */ |
3038 | ||
3039 | void | |
3040 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
3041 | { | |
3042 | struct bp_location *loc, **loc_tmp; | |
3043 | ||
3044 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
3045 | { | |
3046 | callback (loc, NULL); | |
3047 | } | |
3048 | } | |
3049 | ||
b775012e LM |
3050 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3051 | target. It is the case with deleting and disabling of breakpoints when using | |
3052 | always-inserted mode. */ | |
3053 | ||
3054 | static void | |
3055 | update_inserted_breakpoint_locations (void) | |
3056 | { | |
3057 | struct bp_location *bl, **blp_tmp; | |
3058 | int error_flag = 0; | |
3059 | int val = 0; | |
3060 | int disabled_breaks = 0; | |
3061 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3062 | int hw_bp_details_reported = 0; |
b775012e LM |
3063 | |
3064 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
3065 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
3066 | ||
3067 | /* Explicitly mark the warning -- this will only be printed if | |
3068 | there was an error. */ | |
3069 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
3070 | ||
3071 | save_current_space_and_thread (); | |
3072 | ||
3073 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3074 | { | |
3075 | /* We only want to update software breakpoints and hardware | |
3076 | breakpoints. */ | |
3077 | if (!is_breakpoint (bl->owner)) | |
3078 | continue; | |
3079 | ||
3080 | /* We only want to update locations that are already inserted | |
3081 | and need updating. This is to avoid unwanted insertion during | |
3082 | deletion of breakpoints. */ | |
3083 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
3084 | continue; | |
3085 | ||
3086 | switch_to_program_space_and_thread (bl->pspace); | |
3087 | ||
3088 | /* For targets that support global breakpoints, there's no need | |
3089 | to select an inferior to insert breakpoint to. In fact, even | |
3090 | if we aren't attached to any process yet, we should still | |
3091 | insert breakpoints. */ | |
f5656ead | 3092 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
3093 | && ptid_equal (inferior_ptid, null_ptid)) |
3094 | continue; | |
3095 | ||
3096 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 3097 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3098 | if (val) |
3099 | error_flag = val; | |
3100 | } | |
3101 | ||
3102 | if (error_flag) | |
3103 | { | |
3104 | target_terminal_ours_for_output (); | |
3105 | error_stream (tmp_error_stream); | |
3106 | } | |
3107 | ||
3108 | do_cleanups (cleanups); | |
3109 | } | |
3110 | ||
c30eee59 | 3111 | /* Used when starting or continuing the program. */ |
c906108c | 3112 | |
74960c60 VP |
3113 | static void |
3114 | insert_breakpoint_locations (void) | |
c906108c | 3115 | { |
a5606eee | 3116 | struct breakpoint *bpt; |
35df4500 | 3117 | struct bp_location *bl, **blp_tmp; |
eacd795a | 3118 | int error_flag = 0; |
c906108c | 3119 | int val = 0; |
3fbb6ffa | 3120 | int disabled_breaks = 0; |
81d0cc19 | 3121 | int hw_breakpoint_error = 0; |
dd61ec5c | 3122 | int hw_bp_error_explained_already = 0; |
c906108c | 3123 | |
81d0cc19 | 3124 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 3125 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 3126 | |
81d0cc19 GS |
3127 | /* Explicitly mark the warning -- this will only be printed if |
3128 | there was an error. */ | |
3129 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
3130 | |
3131 | save_current_space_and_thread (); | |
3132 | ||
35df4500 | 3133 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3134 | { |
b775012e | 3135 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3136 | continue; |
3137 | ||
4a64f543 MS |
3138 | /* There is no point inserting thread-specific breakpoints if |
3139 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3140 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3141 | if (bl->owner->thread != -1 |
5d5658a1 | 3142 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3143 | continue; |
3144 | ||
35df4500 | 3145 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3146 | |
3147 | /* For targets that support global breakpoints, there's no need | |
3148 | to select an inferior to insert breakpoint to. In fact, even | |
3149 | if we aren't attached to any process yet, we should still | |
3150 | insert breakpoints. */ | |
f5656ead | 3151 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
3152 | && ptid_equal (inferior_ptid, null_ptid)) |
3153 | continue; | |
3154 | ||
3fbb6ffa | 3155 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3156 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3157 | if (val) |
eacd795a | 3158 | error_flag = val; |
879bfdc2 | 3159 | } |
c906108c | 3160 | |
4a64f543 MS |
3161 | /* If we failed to insert all locations of a watchpoint, remove |
3162 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3163 | ALL_BREAKPOINTS (bpt) |
3164 | { | |
3165 | int some_failed = 0; | |
3166 | struct bp_location *loc; | |
3167 | ||
3168 | if (!is_hardware_watchpoint (bpt)) | |
3169 | continue; | |
3170 | ||
d6b74ac4 | 3171 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3172 | continue; |
74960c60 VP |
3173 | |
3174 | if (bpt->disposition == disp_del_at_next_stop) | |
3175 | continue; | |
a5606eee VP |
3176 | |
3177 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3178 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3179 | { |
3180 | some_failed = 1; | |
3181 | break; | |
3182 | } | |
3183 | if (some_failed) | |
3184 | { | |
3185 | for (loc = bpt->loc; loc; loc = loc->next) | |
3186 | if (loc->inserted) | |
834c0d03 | 3187 | remove_breakpoint (loc); |
a5606eee VP |
3188 | |
3189 | hw_breakpoint_error = 1; | |
3190 | fprintf_unfiltered (tmp_error_stream, | |
3191 | "Could not insert hardware watchpoint %d.\n", | |
3192 | bpt->number); | |
eacd795a | 3193 | error_flag = -1; |
a5606eee VP |
3194 | } |
3195 | } | |
3196 | ||
eacd795a | 3197 | if (error_flag) |
81d0cc19 GS |
3198 | { |
3199 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3200 | message about possibly exhausted resources. */ | |
dd61ec5c | 3201 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3202 | { |
c6510018 MS |
3203 | fprintf_unfiltered (tmp_error_stream, |
3204 | "Could not insert hardware breakpoints:\n\ | |
3205 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 3206 | } |
81d0cc19 GS |
3207 | target_terminal_ours_for_output (); |
3208 | error_stream (tmp_error_stream); | |
3209 | } | |
f7545552 TT |
3210 | |
3211 | do_cleanups (cleanups); | |
c906108c SS |
3212 | } |
3213 | ||
c30eee59 TJB |
3214 | /* Used when the program stops. |
3215 | Returns zero if successful, or non-zero if there was a problem | |
3216 | removing a breakpoint location. */ | |
3217 | ||
c906108c | 3218 | int |
fba45db2 | 3219 | remove_breakpoints (void) |
c906108c | 3220 | { |
35df4500 | 3221 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3222 | int val = 0; |
c906108c | 3223 | |
35df4500 | 3224 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3225 | { |
1e4d1764 | 3226 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3227 | val |= remove_breakpoint (bl); |
c5aa993b | 3228 | } |
3a1bae8e | 3229 | return val; |
c906108c SS |
3230 | } |
3231 | ||
49fa26b0 PA |
3232 | /* When a thread exits, remove breakpoints that are related to |
3233 | that thread. */ | |
3234 | ||
3235 | static void | |
3236 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3237 | { | |
3238 | struct breakpoint *b, *b_tmp; | |
3239 | ||
3240 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3241 | { | |
5d5658a1 | 3242 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3243 | { |
3244 | b->disposition = disp_del_at_next_stop; | |
3245 | ||
3246 | printf_filtered (_("\ | |
43792cf0 PA |
3247 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3248 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3249 | |
3250 | /* Hide it from the user. */ | |
3251 | b->number = 0; | |
3252 | } | |
3253 | } | |
3254 | } | |
3255 | ||
6c95b8df PA |
3256 | /* Remove breakpoints of process PID. */ |
3257 | ||
3258 | int | |
3259 | remove_breakpoints_pid (int pid) | |
3260 | { | |
35df4500 | 3261 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3262 | int val; |
3263 | struct inferior *inf = find_inferior_pid (pid); | |
3264 | ||
35df4500 | 3265 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3266 | { |
35df4500 | 3267 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3268 | continue; |
3269 | ||
fc126975 | 3270 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3271 | { |
834c0d03 | 3272 | val = remove_breakpoint (bl); |
6c95b8df PA |
3273 | if (val != 0) |
3274 | return val; | |
3275 | } | |
3276 | } | |
3277 | return 0; | |
3278 | } | |
3279 | ||
c906108c | 3280 | int |
fba45db2 | 3281 | reattach_breakpoints (int pid) |
c906108c | 3282 | { |
6c95b8df | 3283 | struct cleanup *old_chain; |
35df4500 | 3284 | struct bp_location *bl, **blp_tmp; |
c906108c | 3285 | int val; |
86b887df | 3286 | struct ui_file *tmp_error_stream; |
dd61ec5c | 3287 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
3288 | struct inferior *inf; |
3289 | struct thread_info *tp; | |
3290 | ||
3291 | tp = any_live_thread_of_process (pid); | |
3292 | if (tp == NULL) | |
3293 | return 1; | |
3294 | ||
3295 | inf = find_inferior_pid (pid); | |
3296 | old_chain = save_inferior_ptid (); | |
3297 | ||
3298 | inferior_ptid = tp->ptid; | |
a4954f26 | 3299 | |
86b887df | 3300 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 3301 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 3302 | |
35df4500 | 3303 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3304 | { |
35df4500 | 3305 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3306 | continue; |
3307 | ||
35df4500 | 3308 | if (bl->inserted) |
c5aa993b | 3309 | { |
35df4500 | 3310 | bl->inserted = 0; |
dd61ec5c | 3311 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
3312 | if (val != 0) |
3313 | { | |
ce696e05 | 3314 | do_cleanups (old_chain); |
c5aa993b JM |
3315 | return val; |
3316 | } | |
3317 | } | |
3318 | } | |
ce696e05 | 3319 | do_cleanups (old_chain); |
c906108c SS |
3320 | return 0; |
3321 | } | |
3322 | ||
e58b0e63 PA |
3323 | static int internal_breakpoint_number = -1; |
3324 | ||
84f4c1fe PM |
3325 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3326 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3327 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3328 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3329 | breakpoint_count and that value incremented. Internal breakpoints |
3330 | do not set the internal var bpnum. */ | |
3331 | static void | |
3332 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3333 | { | |
3334 | if (internal) | |
3335 | b->number = internal_breakpoint_number--; | |
3336 | else | |
3337 | { | |
3338 | set_breakpoint_count (breakpoint_count + 1); | |
3339 | b->number = breakpoint_count; | |
3340 | } | |
3341 | } | |
3342 | ||
e62c965a | 3343 | static struct breakpoint * |
a6d9a66e | 3344 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3345 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3346 | const struct breakpoint_ops *ops) |
e62c965a | 3347 | { |
e62c965a PP |
3348 | struct symtab_and_line sal; |
3349 | struct breakpoint *b; | |
3350 | ||
4a64f543 | 3351 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3352 | |
3353 | sal.pc = address; | |
3354 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3355 | sal.pspace = current_program_space; |
e62c965a | 3356 | |
06edf0c0 | 3357 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3358 | b->number = internal_breakpoint_number--; |
3359 | b->disposition = disp_donttouch; | |
3360 | ||
3361 | return b; | |
3362 | } | |
3363 | ||
17450429 PP |
3364 | static const char *const longjmp_names[] = |
3365 | { | |
3366 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3367 | }; | |
3368 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3369 | ||
3370 | /* Per-objfile data private to breakpoint.c. */ | |
3371 | struct breakpoint_objfile_data | |
3372 | { | |
3373 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3b7344d5 | 3374 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3375 | |
3376 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3b7344d5 | 3377 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3378 | |
28106bc2 SDJ |
3379 | /* True if we have looked for longjmp probes. */ |
3380 | int longjmp_searched; | |
3381 | ||
3382 | /* SystemTap probe points for longjmp (if any). */ | |
3383 | VEC (probe_p) *longjmp_probes; | |
3384 | ||
17450429 | 3385 | /* Minimal symbol for "std::terminate()" (if any). */ |
3b7344d5 | 3386 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3387 | |
3388 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3b7344d5 | 3389 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3390 | |
3391 | /* True if we have looked for exception probes. */ | |
3392 | int exception_searched; | |
3393 | ||
3394 | /* SystemTap probe points for unwinding (if any). */ | |
3395 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3396 | }; |
3397 | ||
3398 | static const struct objfile_data *breakpoint_objfile_key; | |
3399 | ||
3400 | /* Minimal symbol not found sentinel. */ | |
3401 | static struct minimal_symbol msym_not_found; | |
3402 | ||
3403 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3404 | ||
3405 | static int | |
3406 | msym_not_found_p (const struct minimal_symbol *msym) | |
3407 | { | |
3408 | return msym == &msym_not_found; | |
3409 | } | |
3410 | ||
3411 | /* Return per-objfile data needed by breakpoint.c. | |
3412 | Allocate the data if necessary. */ | |
3413 | ||
3414 | static struct breakpoint_objfile_data * | |
3415 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3416 | { | |
3417 | struct breakpoint_objfile_data *bp_objfile_data; | |
3418 | ||
9a3c8263 SM |
3419 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3420 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3421 | if (bp_objfile_data == NULL) |
3422 | { | |
8d749320 SM |
3423 | bp_objfile_data = |
3424 | XOBNEW (&objfile->objfile_obstack, struct breakpoint_objfile_data); | |
17450429 PP |
3425 | |
3426 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3427 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3428 | } | |
3429 | return bp_objfile_data; | |
3430 | } | |
3431 | ||
28106bc2 SDJ |
3432 | static void |
3433 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3434 | { | |
9a3c8263 SM |
3435 | struct breakpoint_objfile_data *bp_objfile_data |
3436 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 SDJ |
3437 | |
3438 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3439 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3440 | } | |
3441 | ||
e62c965a | 3442 | static void |
af02033e | 3443 | create_overlay_event_breakpoint (void) |
e62c965a | 3444 | { |
69de3c6a | 3445 | struct objfile *objfile; |
af02033e | 3446 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3447 | |
69de3c6a PP |
3448 | ALL_OBJFILES (objfile) |
3449 | { | |
3450 | struct breakpoint *b; | |
17450429 PP |
3451 | struct breakpoint_objfile_data *bp_objfile_data; |
3452 | CORE_ADDR addr; | |
67994074 | 3453 | struct explicit_location explicit_loc; |
69de3c6a | 3454 | |
17450429 PP |
3455 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3456 | ||
3b7344d5 | 3457 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3458 | continue; |
3459 | ||
3b7344d5 | 3460 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3461 | { |
3b7344d5 | 3462 | struct bound_minimal_symbol m; |
17450429 PP |
3463 | |
3464 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3465 | if (m.minsym == NULL) |
17450429 PP |
3466 | { |
3467 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3468 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3469 | continue; |
3470 | } | |
3471 | bp_objfile_data->overlay_msym = m; | |
3472 | } | |
e62c965a | 3473 | |
77e371c0 | 3474 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3475 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3476 | bp_overlay_event, |
3477 | &internal_breakpoint_ops); | |
67994074 KS |
3478 | initialize_explicit_location (&explicit_loc); |
3479 | explicit_loc.function_name = ASTRDUP (func_name); | |
3480 | b->location = new_explicit_location (&explicit_loc); | |
e62c965a | 3481 | |
69de3c6a PP |
3482 | if (overlay_debugging == ovly_auto) |
3483 | { | |
3484 | b->enable_state = bp_enabled; | |
3485 | overlay_events_enabled = 1; | |
3486 | } | |
3487 | else | |
3488 | { | |
3489 | b->enable_state = bp_disabled; | |
3490 | overlay_events_enabled = 0; | |
3491 | } | |
e62c965a | 3492 | } |
e62c965a PP |
3493 | } |
3494 | ||
0fd8e87f | 3495 | static void |
af02033e | 3496 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3497 | { |
6c95b8df | 3498 | struct program_space *pspace; |
6c95b8df PA |
3499 | struct cleanup *old_chain; |
3500 | ||
3501 | old_chain = save_current_program_space (); | |
0fd8e87f | 3502 | |
6c95b8df | 3503 | ALL_PSPACES (pspace) |
af02033e PP |
3504 | { |
3505 | struct objfile *objfile; | |
3506 | ||
3507 | set_current_program_space (pspace); | |
3508 | ||
3509 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3510 | { |
af02033e PP |
3511 | int i; |
3512 | struct gdbarch *gdbarch; | |
17450429 | 3513 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3514 | |
af02033e | 3515 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3516 | |
17450429 PP |
3517 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3518 | ||
28106bc2 SDJ |
3519 | if (!bp_objfile_data->longjmp_searched) |
3520 | { | |
25f9533e SDJ |
3521 | VEC (probe_p) *ret; |
3522 | ||
3523 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3524 | if (ret != NULL) | |
3525 | { | |
3526 | /* We are only interested in checking one element. */ | |
3527 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3528 | ||
3529 | if (!can_evaluate_probe_arguments (p)) | |
3530 | { | |
3531 | /* We cannot use the probe interface here, because it does | |
3532 | not know how to evaluate arguments. */ | |
3533 | VEC_free (probe_p, ret); | |
3534 | ret = NULL; | |
3535 | } | |
3536 | } | |
3537 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3538 | bp_objfile_data->longjmp_searched = 1; |
3539 | } | |
3540 | ||
3541 | if (bp_objfile_data->longjmp_probes != NULL) | |
3542 | { | |
3543 | int i; | |
3544 | struct probe *probe; | |
3545 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3546 | ||
3547 | for (i = 0; | |
3548 | VEC_iterate (probe_p, | |
3549 | bp_objfile_data->longjmp_probes, | |
3550 | i, probe); | |
3551 | ++i) | |
3552 | { | |
3553 | struct breakpoint *b; | |
3554 | ||
729662a5 TT |
3555 | b = create_internal_breakpoint (gdbarch, |
3556 | get_probe_address (probe, | |
3557 | objfile), | |
28106bc2 SDJ |
3558 | bp_longjmp_master, |
3559 | &internal_breakpoint_ops); | |
5b56227b KS |
3560 | b->location |
3561 | = new_probe_location ("-probe-stap libc:longjmp"); | |
28106bc2 SDJ |
3562 | b->enable_state = bp_disabled; |
3563 | } | |
3564 | ||
3565 | continue; | |
3566 | } | |
3567 | ||
0569175e TSD |
3568 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3569 | continue; | |
3570 | ||
17450429 | 3571 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3572 | { |
3573 | struct breakpoint *b; | |
af02033e | 3574 | const char *func_name; |
17450429 | 3575 | CORE_ADDR addr; |
67994074 | 3576 | struct explicit_location explicit_loc; |
6c95b8df | 3577 | |
3b7344d5 | 3578 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3579 | continue; |
0fd8e87f | 3580 | |
17450429 | 3581 | func_name = longjmp_names[i]; |
3b7344d5 | 3582 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3583 | { |
3b7344d5 | 3584 | struct bound_minimal_symbol m; |
17450429 PP |
3585 | |
3586 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3587 | if (m.minsym == NULL) |
17450429 PP |
3588 | { |
3589 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3590 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3591 | continue; |
3592 | } | |
3593 | bp_objfile_data->longjmp_msym[i] = m; | |
3594 | } | |
3595 | ||
77e371c0 | 3596 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3597 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3598 | &internal_breakpoint_ops); | |
67994074 KS |
3599 | initialize_explicit_location (&explicit_loc); |
3600 | explicit_loc.function_name = ASTRDUP (func_name); | |
3601 | b->location = new_explicit_location (&explicit_loc); | |
af02033e PP |
3602 | b->enable_state = bp_disabled; |
3603 | } | |
0fd8e87f | 3604 | } |
af02033e | 3605 | } |
6c95b8df PA |
3606 | |
3607 | do_cleanups (old_chain); | |
0fd8e87f UW |
3608 | } |
3609 | ||
af02033e | 3610 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3611 | static void |
af02033e | 3612 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3613 | { |
3614 | struct program_space *pspace; | |
aa7d318d | 3615 | struct cleanup *old_chain; |
af02033e | 3616 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3617 | |
3618 | old_chain = save_current_program_space (); | |
3619 | ||
3620 | ALL_PSPACES (pspace) | |
17450429 PP |
3621 | { |
3622 | struct objfile *objfile; | |
3623 | CORE_ADDR addr; | |
3624 | ||
3625 | set_current_program_space (pspace); | |
3626 | ||
aa7d318d TT |
3627 | ALL_OBJFILES (objfile) |
3628 | { | |
3629 | struct breakpoint *b; | |
17450429 | 3630 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3631 | struct explicit_location explicit_loc; |
aa7d318d | 3632 | |
17450429 | 3633 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3634 | |
3b7344d5 | 3635 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3636 | continue; |
3637 | ||
3b7344d5 | 3638 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3639 | { |
3b7344d5 | 3640 | struct bound_minimal_symbol m; |
17450429 PP |
3641 | |
3642 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3643 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3644 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3645 | { |
3646 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3647 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3648 | continue; |
3649 | } | |
3650 | bp_objfile_data->terminate_msym = m; | |
3651 | } | |
aa7d318d | 3652 | |
77e371c0 | 3653 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3654 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3655 | bp_std_terminate_master, |
3656 | &internal_breakpoint_ops); | |
67994074 KS |
3657 | initialize_explicit_location (&explicit_loc); |
3658 | explicit_loc.function_name = ASTRDUP (func_name); | |
3659 | b->location = new_explicit_location (&explicit_loc); | |
aa7d318d TT |
3660 | b->enable_state = bp_disabled; |
3661 | } | |
17450429 PP |
3662 | } |
3663 | ||
aa7d318d TT |
3664 | do_cleanups (old_chain); |
3665 | } | |
3666 | ||
186c406b TT |
3667 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3668 | ||
70221824 | 3669 | static void |
186c406b TT |
3670 | create_exception_master_breakpoint (void) |
3671 | { | |
3672 | struct objfile *objfile; | |
17450429 | 3673 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3674 | |
3675 | ALL_OBJFILES (objfile) | |
3676 | { | |
17450429 PP |
3677 | struct breakpoint *b; |
3678 | struct gdbarch *gdbarch; | |
3679 | struct breakpoint_objfile_data *bp_objfile_data; | |
3680 | CORE_ADDR addr; | |
67994074 | 3681 | struct explicit_location explicit_loc; |
17450429 PP |
3682 | |
3683 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3684 | ||
28106bc2 SDJ |
3685 | /* We prefer the SystemTap probe point if it exists. */ |
3686 | if (!bp_objfile_data->exception_searched) | |
3687 | { | |
25f9533e SDJ |
3688 | VEC (probe_p) *ret; |
3689 | ||
3690 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3691 | ||
3692 | if (ret != NULL) | |
3693 | { | |
3694 | /* We are only interested in checking one element. */ | |
3695 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3696 | ||
3697 | if (!can_evaluate_probe_arguments (p)) | |
3698 | { | |
3699 | /* We cannot use the probe interface here, because it does | |
3700 | not know how to evaluate arguments. */ | |
3701 | VEC_free (probe_p, ret); | |
3702 | ret = NULL; | |
3703 | } | |
3704 | } | |
3705 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3706 | bp_objfile_data->exception_searched = 1; |
3707 | } | |
3708 | ||
3709 | if (bp_objfile_data->exception_probes != NULL) | |
3710 | { | |
3711 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3712 | int i; | |
3713 | struct probe *probe; | |
3714 | ||
3715 | for (i = 0; | |
3716 | VEC_iterate (probe_p, | |
3717 | bp_objfile_data->exception_probes, | |
3718 | i, probe); | |
3719 | ++i) | |
3720 | { | |
3721 | struct breakpoint *b; | |
3722 | ||
729662a5 TT |
3723 | b = create_internal_breakpoint (gdbarch, |
3724 | get_probe_address (probe, | |
3725 | objfile), | |
28106bc2 SDJ |
3726 | bp_exception_master, |
3727 | &internal_breakpoint_ops); | |
5b56227b KS |
3728 | b->location |
3729 | = new_probe_location ("-probe-stap libgcc:unwind"); | |
28106bc2 SDJ |
3730 | b->enable_state = bp_disabled; |
3731 | } | |
3732 | ||
3733 | continue; | |
3734 | } | |
3735 | ||
3736 | /* Otherwise, try the hook function. */ | |
3737 | ||
3b7344d5 | 3738 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3739 | continue; |
3740 | ||
3741 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3742 | |
3b7344d5 | 3743 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3744 | { |
3b7344d5 | 3745 | struct bound_minimal_symbol debug_hook; |
186c406b | 3746 | |
17450429 | 3747 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3748 | if (debug_hook.minsym == NULL) |
17450429 | 3749 | { |
3b7344d5 | 3750 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3751 | continue; |
3752 | } | |
3753 | ||
3754 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3755 | } |
17450429 | 3756 | |
77e371c0 | 3757 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3758 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3759 | ¤t_target); | |
06edf0c0 PA |
3760 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3761 | &internal_breakpoint_ops); | |
67994074 KS |
3762 | initialize_explicit_location (&explicit_loc); |
3763 | explicit_loc.function_name = ASTRDUP (func_name); | |
3764 | b->location = new_explicit_location (&explicit_loc); | |
17450429 | 3765 | b->enable_state = bp_disabled; |
186c406b | 3766 | } |
186c406b TT |
3767 | } |
3768 | ||
9ef9e6a6 KS |
3769 | /* Does B have a location spec? */ |
3770 | ||
3771 | static int | |
3772 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3773 | { | |
3774 | return b->location != NULL && event_location_empty_p (b->location); | |
3775 | } | |
3776 | ||
c906108c | 3777 | void |
fba45db2 | 3778 | update_breakpoints_after_exec (void) |
c906108c | 3779 | { |
35df4500 | 3780 | struct breakpoint *b, *b_tmp; |
876fa593 | 3781 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3782 | |
25b22b0a PA |
3783 | /* We're about to delete breakpoints from GDB's lists. If the |
3784 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3785 | writing the breakpoints' "shadow contents" back into memory. The | |
3786 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3787 | do that. Instead, the target is responsible from marking | |
3788 | breakpoints out as soon as it detects an exec. We don't do that | |
3789 | here instead, because there may be other attempts to delete | |
3790 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3791 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3792 | if (bploc->pspace == current_program_space) |
3793 | gdb_assert (!bploc->inserted); | |
c906108c | 3794 | |
35df4500 | 3795 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3796 | { |
6c95b8df PA |
3797 | if (b->pspace != current_program_space) |
3798 | continue; | |
3799 | ||
4a64f543 | 3800 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3801 | if (b->type == bp_shlib_event) |
3802 | { | |
3803 | delete_breakpoint (b); | |
3804 | continue; | |
3805 | } | |
c906108c | 3806 | |
4a64f543 | 3807 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3808 | if (b->type == bp_jit_event) |
3809 | { | |
3810 | delete_breakpoint (b); | |
3811 | continue; | |
3812 | } | |
3813 | ||
1900040c | 3814 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3815 | as must overlay event and longjmp master breakpoints. */ |
3816 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3817 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3818 | || b->type == bp_exception_master) | |
c4093a6a JM |
3819 | { |
3820 | delete_breakpoint (b); | |
3821 | continue; | |
3822 | } | |
3823 | ||
4a64f543 | 3824 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3825 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3826 | { |
3827 | delete_breakpoint (b); | |
3828 | continue; | |
3829 | } | |
3830 | ||
7c16b83e PA |
3831 | /* Just like single-step breakpoints. */ |
3832 | if (b->type == bp_single_step) | |
3833 | { | |
3834 | delete_breakpoint (b); | |
3835 | continue; | |
3836 | } | |
3837 | ||
611c83ae PA |
3838 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3839 | after an exec. */ | |
186c406b | 3840 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3841 | || b->type == bp_longjmp_call_dummy |
186c406b | 3842 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3843 | { |
3844 | delete_breakpoint (b); | |
3845 | continue; | |
3846 | } | |
3847 | ||
ce78b96d JB |
3848 | if (b->type == bp_catchpoint) |
3849 | { | |
3850 | /* For now, none of the bp_catchpoint breakpoints need to | |
3851 | do anything at this point. In the future, if some of | |
3852 | the catchpoints need to something, we will need to add | |
3853 | a new method, and call this method from here. */ | |
3854 | continue; | |
3855 | } | |
3856 | ||
c5aa993b JM |
3857 | /* bp_finish is a special case. The only way we ought to be able |
3858 | to see one of these when an exec() has happened, is if the user | |
3859 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3860 | carries them to the call-site of the current callee, by setting | |
3861 | a temporary bp there and resuming. But in this case, the finish | |
3862 | will carry them entirely through the vfork & exec. | |
3863 | ||
3864 | We don't want to allow a bp_finish to remain inserted now. But | |
3865 | we can't safely delete it, 'cause finish_command has a handle to | |
3866 | the bp on a bpstat, and will later want to delete it. There's a | |
3867 | chance (and I've seen it happen) that if we delete the bp_finish | |
3868 | here, that its storage will get reused by the time finish_command | |
3869 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3870 | We really must allow finish_command to delete a bp_finish. | |
3871 | ||
e5dd4106 | 3872 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3873 | it's safe to delete something others may have handles to?" |
3874 | problem, what we'll do here is just uninsert the bp_finish, and | |
3875 | let finish_command delete it. | |
3876 | ||
3877 | (We know the bp_finish is "doomed" in the sense that it's | |
3878 | momentary, and will be deleted as soon as finish_command sees | |
3879 | the inferior stopped. So it doesn't matter that the bp's | |
3880 | address is probably bogus in the new a.out, unlike e.g., the | |
3881 | solib breakpoints.) */ | |
c5aa993b | 3882 | |
c5aa993b JM |
3883 | if (b->type == bp_finish) |
3884 | { | |
3885 | continue; | |
3886 | } | |
3887 | ||
3888 | /* Without a symbolic address, we have little hope of the | |
3889 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3890 | a.out. */ |
9ef9e6a6 | 3891 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3892 | { |
3893 | delete_breakpoint (b); | |
3894 | continue; | |
3895 | } | |
c5aa993b | 3896 | } |
c906108c SS |
3897 | } |
3898 | ||
3899 | int | |
d80ee84f | 3900 | detach_breakpoints (ptid_t ptid) |
c906108c | 3901 | { |
35df4500 | 3902 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3903 | int val = 0; |
ce696e05 | 3904 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3905 | struct inferior *inf = current_inferior (); |
c5aa993b | 3906 | |
dfd4cc63 | 3907 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3908 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3909 | |
6c95b8df | 3910 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3911 | inferior_ptid = ptid; |
35df4500 | 3912 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3913 | { |
35df4500 | 3914 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3915 | continue; |
3916 | ||
bd9673a4 PW |
3917 | /* This function must physically remove breakpoints locations |
3918 | from the specified ptid, without modifying the breakpoint | |
3919 | package's state. Locations of type bp_loc_other are only | |
3920 | maintained at GDB side. So, there is no need to remove | |
3921 | these bp_loc_other locations. Moreover, removing these | |
3922 | would modify the breakpoint package's state. */ | |
3923 | if (bl->loc_type == bp_loc_other) | |
3924 | continue; | |
3925 | ||
35df4500 | 3926 | if (bl->inserted) |
b2b6a7da | 3927 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3928 | } |
d03285ec | 3929 | |
ce696e05 | 3930 | do_cleanups (old_chain); |
3a1bae8e | 3931 | return val; |
c906108c SS |
3932 | } |
3933 | ||
35df4500 | 3934 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3935 | Note that this is used to detach breakpoints from a child fork. |
3936 | When we get here, the child isn't in the inferior list, and neither | |
3937 | do we have objects to represent its address space --- we should | |
35df4500 | 3938 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3939 | |
c906108c | 3940 | static int |
b2b6a7da | 3941 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3942 | { |
3943 | int val; | |
c5aa993b | 3944 | |
35df4500 TJB |
3945 | /* BL is never in moribund_locations by our callers. */ |
3946 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3947 | |
74960c60 VP |
3948 | /* The type of none suggests that owner is actually deleted. |
3949 | This should not ever happen. */ | |
35df4500 | 3950 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3951 | |
35df4500 TJB |
3952 | if (bl->loc_type == bp_loc_software_breakpoint |
3953 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3954 | { |
c02f5703 MS |
3955 | /* "Normal" instruction breakpoint: either the standard |
3956 | trap-instruction bp (bp_breakpoint), or a | |
3957 | bp_hardware_breakpoint. */ | |
3958 | ||
3959 | /* First check to see if we have to handle an overlay. */ | |
3960 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3961 | || bl->section == NULL |
3962 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3963 | { |
3964 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3965 | |
3966 | /* If we're trying to uninsert a memory breakpoint that we | |
3967 | know is set in a dynamic object that is marked | |
3968 | shlib_disabled, then either the dynamic object was | |
3969 | removed with "remove-symbol-file" or with | |
3970 | "nosharedlibrary". In the former case, we don't know | |
3971 | whether another dynamic object might have loaded over the | |
3972 | breakpoint's address -- the user might well let us know | |
3973 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3974 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3975 | list of dynamically loaded objects). If we have the |
3976 | breakpoint's shadow memory, that is, this is a software | |
3977 | breakpoint managed by GDB, check whether the breakpoint | |
3978 | is still inserted in memory, to avoid overwriting wrong | |
3979 | code with stale saved shadow contents. Note that HW | |
3980 | breakpoints don't have shadow memory, as they're | |
3981 | implemented using a mechanism that is not dependent on | |
3982 | being able to modify the target's memory, and as such | |
3983 | they should always be removed. */ | |
3984 | if (bl->shlib_disabled | |
3985 | && bl->target_info.shadow_len != 0 | |
3986 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3987 | val = 0; | |
3988 | else | |
73971819 | 3989 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3990 | } |
c906108c SS |
3991 | else |
3992 | { | |
4a64f543 | 3993 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3994 | Did we set a breakpoint at the LMA? */ |
3995 | if (!overlay_events_enabled) | |
3996 | { | |
3997 | /* Yes -- overlay event support is not active, so we | |
3998 | should have set a breakpoint at the LMA. Remove it. | |
3999 | */ | |
c02f5703 MS |
4000 | /* Ignore any failures: if the LMA is in ROM, we will |
4001 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
4002 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
4003 | target_remove_hw_breakpoint (bl->gdbarch, | |
4004 | &bl->overlay_target_info); | |
c02f5703 | 4005 | else |
35df4500 | 4006 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
4007 | &bl->overlay_target_info, |
4008 | reason); | |
c02f5703 MS |
4009 | } |
4010 | /* Did we set a breakpoint at the VMA? | |
4011 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 4012 | if (bl->inserted) |
c906108c | 4013 | { |
c02f5703 MS |
4014 | /* Yes -- remove it. Previously we did not bother to |
4015 | remove the breakpoint if the section had been | |
4016 | unmapped, but let's not rely on that being safe. We | |
4017 | don't know what the overlay manager might do. */ | |
aa67235e UW |
4018 | |
4019 | /* However, we should remove *software* breakpoints only | |
4020 | if the section is still mapped, or else we overwrite | |
4021 | wrong code with the saved shadow contents. */ | |
348d480f PA |
4022 | if (bl->loc_type == bp_loc_hardware_breakpoint |
4023 | || section_is_mapped (bl->section)) | |
73971819 | 4024 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
4025 | else |
4026 | val = 0; | |
c906108c | 4027 | } |
c02f5703 MS |
4028 | else |
4029 | { | |
4030 | /* No -- not inserted, so no need to remove. No error. */ | |
4031 | val = 0; | |
4032 | } | |
c906108c | 4033 | } |
879d1e6b | 4034 | |
08351840 PA |
4035 | /* In some cases, we might not be able to remove a breakpoint in |
4036 | a shared library that has already been removed, but we have | |
4037 | not yet processed the shlib unload event. Similarly for an | |
4038 | unloaded add-symbol-file object - the user might not yet have | |
4039 | had the chance to remove-symbol-file it. shlib_disabled will | |
4040 | be set if the library/object has already been removed, but | |
4041 | the breakpoint hasn't been uninserted yet, e.g., after | |
4042 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
4043 | always-inserted mode. */ | |
076855f9 | 4044 | if (val |
08351840 PA |
4045 | && (bl->loc_type == bp_loc_software_breakpoint |
4046 | && (bl->shlib_disabled | |
4047 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
4048 | || shared_objfile_contains_address_p (bl->pspace, |
4049 | bl->address)))) | |
879d1e6b UW |
4050 | val = 0; |
4051 | ||
c906108c SS |
4052 | if (val) |
4053 | return val; | |
b2b6a7da | 4054 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 4055 | } |
35df4500 | 4056 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 4057 | { |
77b06cd7 TJB |
4058 | gdb_assert (bl->owner->ops != NULL |
4059 | && bl->owner->ops->remove_location != NULL); | |
4060 | ||
b2b6a7da | 4061 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 4062 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 4063 | |
c906108c | 4064 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 4065 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 4066 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4067 | bl->owner->number); |
c906108c | 4068 | } |
35df4500 TJB |
4069 | else if (bl->owner->type == bp_catchpoint |
4070 | && breakpoint_enabled (bl->owner) | |
4071 | && !bl->duplicate) | |
ce78b96d | 4072 | { |
77b06cd7 TJB |
4073 | gdb_assert (bl->owner->ops != NULL |
4074 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 4075 | |
73971819 | 4076 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
4077 | if (val) |
4078 | return val; | |
77b06cd7 | 4079 | |
b2b6a7da | 4080 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 4081 | } |
c906108c SS |
4082 | |
4083 | return 0; | |
4084 | } | |
4085 | ||
6c95b8df | 4086 | static int |
834c0d03 | 4087 | remove_breakpoint (struct bp_location *bl) |
6c95b8df PA |
4088 | { |
4089 | int ret; | |
4090 | struct cleanup *old_chain; | |
4091 | ||
35df4500 TJB |
4092 | /* BL is never in moribund_locations by our callers. */ |
4093 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4094 | |
6c95b8df PA |
4095 | /* The type of none suggests that owner is actually deleted. |
4096 | This should not ever happen. */ | |
35df4500 | 4097 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
4098 | |
4099 | old_chain = save_current_space_and_thread (); | |
4100 | ||
35df4500 | 4101 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4102 | |
b2b6a7da | 4103 | ret = remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
4104 | |
4105 | do_cleanups (old_chain); | |
4106 | return ret; | |
4107 | } | |
4108 | ||
c906108c SS |
4109 | /* Clear the "inserted" flag in all breakpoints. */ |
4110 | ||
25b22b0a | 4111 | void |
fba45db2 | 4112 | mark_breakpoints_out (void) |
c906108c | 4113 | { |
35df4500 | 4114 | struct bp_location *bl, **blp_tmp; |
c906108c | 4115 | |
35df4500 | 4116 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 4117 | if (bl->pspace == current_program_space) |
35df4500 | 4118 | bl->inserted = 0; |
c906108c SS |
4119 | } |
4120 | ||
53a5351d JM |
4121 | /* Clear the "inserted" flag in all breakpoints and delete any |
4122 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4123 | |
4124 | Plus other such housekeeping that has to be done for breakpoints | |
4125 | between runs. | |
4126 | ||
53a5351d JM |
4127 | Note: this function gets called at the end of a run (by |
4128 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4129 | init_wait_for_inferior). */ |
c906108c SS |
4130 | |
4131 | ||
4132 | ||
4133 | void | |
fba45db2 | 4134 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4135 | { |
35df4500 | 4136 | struct breakpoint *b, *b_tmp; |
870f88f7 | 4137 | struct bp_location *bl; |
1c5cfe86 | 4138 | int ix; |
6c95b8df | 4139 | struct program_space *pspace = current_program_space; |
c906108c | 4140 | |
50c71eaf PA |
4141 | /* If breakpoint locations are shared across processes, then there's |
4142 | nothing to do. */ | |
f5656ead | 4143 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4144 | return; |
4145 | ||
1a853c52 | 4146 | mark_breakpoints_out (); |
075f6582 | 4147 | |
35df4500 | 4148 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 4149 | { |
6c95b8df PA |
4150 | if (b->loc && b->loc->pspace != pspace) |
4151 | continue; | |
4152 | ||
c5aa993b JM |
4153 | switch (b->type) |
4154 | { | |
4155 | case bp_call_dummy: | |
e2e4d78b | 4156 | case bp_longjmp_call_dummy: |
c906108c | 4157 | |
c5aa993b | 4158 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
4159 | cause problems when the inferior is rerun, so we better get |
4160 | rid of it. */ | |
4161 | ||
4162 | case bp_watchpoint_scope: | |
4163 | ||
4164 | /* Also get rid of scope breakpoints. */ | |
4165 | ||
4166 | case bp_shlib_event: | |
4167 | ||
4168 | /* Also remove solib event breakpoints. Their addresses may | |
4169 | have changed since the last time we ran the program. | |
4170 | Actually we may now be debugging against different target; | |
4171 | and so the solib backend that installed this breakpoint may | |
4172 | not be used in by the target. E.g., | |
4173 | ||
4174 | (gdb) file prog-linux | |
4175 | (gdb) run # native linux target | |
4176 | ... | |
4177 | (gdb) kill | |
4178 | (gdb) file prog-win.exe | |
4179 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4180 | */ | |
c906108c | 4181 | |
f59f708a PA |
4182 | case bp_step_resume: |
4183 | ||
4184 | /* Also remove step-resume breakpoints. */ | |
4185 | ||
7c16b83e PA |
4186 | case bp_single_step: |
4187 | ||
4188 | /* Also remove single-step breakpoints. */ | |
4189 | ||
c5aa993b JM |
4190 | delete_breakpoint (b); |
4191 | break; | |
c906108c | 4192 | |
c5aa993b JM |
4193 | case bp_watchpoint: |
4194 | case bp_hardware_watchpoint: | |
4195 | case bp_read_watchpoint: | |
4196 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4197 | { |
4198 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4199 | |
3a5c3e22 PA |
4200 | /* Likewise for watchpoints on local expressions. */ |
4201 | if (w->exp_valid_block != NULL) | |
4202 | delete_breakpoint (b); | |
63000888 | 4203 | else |
3a5c3e22 | 4204 | { |
63000888 PA |
4205 | /* Get rid of existing locations, which are no longer |
4206 | valid. New ones will be created in | |
4207 | update_watchpoint, when the inferior is restarted. | |
4208 | The next update_global_location_list call will | |
4209 | garbage collect them. */ | |
4210 | b->loc = NULL; | |
4211 | ||
4212 | if (context == inf_starting) | |
4213 | { | |
4214 | /* Reset val field to force reread of starting value in | |
4215 | insert_breakpoints. */ | |
4216 | if (w->val) | |
4217 | value_free (w->val); | |
4218 | w->val = NULL; | |
4219 | w->val_valid = 0; | |
4220 | } | |
4221 | } | |
3a5c3e22 | 4222 | } |
c5aa993b JM |
4223 | break; |
4224 | default: | |
c5aa993b JM |
4225 | break; |
4226 | } | |
4227 | } | |
1c5cfe86 PA |
4228 | |
4229 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4230 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4231 | decref_bp_location (&bl); | |
1c5cfe86 | 4232 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4233 | } |
4234 | ||
6c95b8df PA |
4235 | /* These functions concern about actual breakpoints inserted in the |
4236 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4237 | we need to hop over the bkpt --- so we check for address space | |
4238 | match, not program space. */ | |
4239 | ||
c2c6d25f JM |
4240 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4241 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4242 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4243 | permanent breakpoint. | |
4244 | - When continuing from a location with an ordinary breakpoint, we | |
4245 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4246 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4247 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4248 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4249 | |
c2c6d25f | 4250 | enum breakpoint_here |
6c95b8df | 4251 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4252 | { |
35df4500 | 4253 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4254 | int any_breakpoint_here = 0; |
c906108c | 4255 | |
35df4500 | 4256 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4257 | { |
35df4500 TJB |
4258 | if (bl->loc_type != bp_loc_software_breakpoint |
4259 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4260 | continue; |
4261 | ||
f1310107 | 4262 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4263 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4264 | || bl->permanent) |
f1310107 | 4265 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4266 | { |
4267 | if (overlay_debugging | |
35df4500 TJB |
4268 | && section_is_overlay (bl->section) |
4269 | && !section_is_mapped (bl->section)) | |
075f6582 | 4270 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4271 | else if (bl->permanent) |
075f6582 DJ |
4272 | return permanent_breakpoint_here; |
4273 | else | |
4274 | any_breakpoint_here = 1; | |
4275 | } | |
4276 | } | |
c906108c | 4277 | |
f486487f | 4278 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4279 | } |
4280 | ||
d35ae833 PA |
4281 | /* See breakpoint.h. */ |
4282 | ||
4283 | int | |
4284 | breakpoint_in_range_p (struct address_space *aspace, | |
4285 | CORE_ADDR addr, ULONGEST len) | |
4286 | { | |
4287 | struct bp_location *bl, **blp_tmp; | |
4288 | ||
4289 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4290 | { | |
4291 | if (bl->loc_type != bp_loc_software_breakpoint | |
4292 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4293 | continue; | |
4294 | ||
4295 | if ((breakpoint_enabled (bl->owner) | |
4296 | || bl->permanent) | |
4297 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4298 | addr, len)) | |
4299 | { | |
4300 | if (overlay_debugging | |
4301 | && section_is_overlay (bl->section) | |
4302 | && !section_is_mapped (bl->section)) | |
4303 | { | |
4304 | /* Unmapped overlay -- can't be a match. */ | |
4305 | continue; | |
4306 | } | |
4307 | ||
4308 | return 1; | |
4309 | } | |
4310 | } | |
4311 | ||
4312 | return 0; | |
4313 | } | |
4314 | ||
1c5cfe86 PA |
4315 | /* Return true if there's a moribund breakpoint at PC. */ |
4316 | ||
4317 | int | |
6c95b8df | 4318 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4319 | { |
4320 | struct bp_location *loc; | |
4321 | int ix; | |
4322 | ||
4323 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4324 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4325 | return 1; |
4326 | ||
4327 | return 0; | |
4328 | } | |
c2c6d25f | 4329 | |
f7ce857f PA |
4330 | /* Returns non-zero iff BL is inserted at PC, in address space |
4331 | ASPACE. */ | |
4332 | ||
4333 | static int | |
4334 | bp_location_inserted_here_p (struct bp_location *bl, | |
4335 | struct address_space *aspace, CORE_ADDR pc) | |
4336 | { | |
4337 | if (bl->inserted | |
4338 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4339 | aspace, pc)) | |
4340 | { | |
4341 | if (overlay_debugging | |
4342 | && section_is_overlay (bl->section) | |
4343 | && !section_is_mapped (bl->section)) | |
4344 | return 0; /* unmapped overlay -- can't be a match */ | |
4345 | else | |
4346 | return 1; | |
4347 | } | |
4348 | return 0; | |
4349 | } | |
4350 | ||
a1fd2fa5 | 4351 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4352 | |
4353 | int | |
a1fd2fa5 | 4354 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4355 | { |
f7ce857f | 4356 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4357 | |
f7ce857f | 4358 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4359 | { |
f7ce857f PA |
4360 | struct bp_location *bl = *blp; |
4361 | ||
35df4500 TJB |
4362 | if (bl->loc_type != bp_loc_software_breakpoint |
4363 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4364 | continue; |
4365 | ||
f7ce857f PA |
4366 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4367 | return 1; | |
c5aa993b | 4368 | } |
c36b740a VP |
4369 | return 0; |
4370 | } | |
4371 | ||
a1fd2fa5 PA |
4372 | /* This function returns non-zero iff there is a software breakpoint |
4373 | inserted at PC. */ | |
c36b740a VP |
4374 | |
4375 | int | |
a1fd2fa5 PA |
4376 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
4377 | CORE_ADDR pc) | |
4fa8626c | 4378 | { |
f7ce857f | 4379 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4380 | |
f7ce857f | 4381 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4382 | { |
f7ce857f PA |
4383 | struct bp_location *bl = *blp; |
4384 | ||
35df4500 | 4385 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4386 | continue; |
4387 | ||
f7ce857f PA |
4388 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4389 | return 1; | |
4fa8626c DJ |
4390 | } |
4391 | ||
4392 | return 0; | |
9c02b525 PA |
4393 | } |
4394 | ||
4395 | /* See breakpoint.h. */ | |
4396 | ||
4397 | int | |
4398 | hardware_breakpoint_inserted_here_p (struct address_space *aspace, | |
4399 | CORE_ADDR pc) | |
4400 | { | |
4401 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4402 | |
4403 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4404 | { | |
4405 | struct bp_location *bl = *blp; | |
4406 | ||
4407 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4408 | continue; | |
4409 | ||
4410 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4411 | return 1; | |
4412 | } | |
4413 | ||
4414 | return 0; | |
4fa8626c DJ |
4415 | } |
4416 | ||
9093389c PA |
4417 | int |
4418 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4419 | CORE_ADDR addr, ULONGEST len) | |
4420 | { | |
4421 | struct breakpoint *bpt; | |
4422 | ||
4423 | ALL_BREAKPOINTS (bpt) | |
4424 | { | |
4425 | struct bp_location *loc; | |
4426 | ||
4427 | if (bpt->type != bp_hardware_watchpoint | |
4428 | && bpt->type != bp_access_watchpoint) | |
4429 | continue; | |
4430 | ||
4431 | if (!breakpoint_enabled (bpt)) | |
4432 | continue; | |
4433 | ||
4434 | for (loc = bpt->loc; loc; loc = loc->next) | |
4435 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4436 | { | |
4437 | CORE_ADDR l, h; | |
4438 | ||
4439 | /* Check for intersection. */ | |
768adc05 PA |
4440 | l = std::max<CORE_ADDR> (loc->address, addr); |
4441 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4442 | if (l < h) |
4443 | return 1; | |
4444 | } | |
4445 | } | |
4446 | return 0; | |
4447 | } | |
c906108c | 4448 | \f |
c5aa993b | 4449 | |
c906108c SS |
4450 | /* bpstat stuff. External routines' interfaces are documented |
4451 | in breakpoint.h. */ | |
4452 | ||
4453 | int | |
c326b90e | 4454 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4455 | { |
533be4dd | 4456 | return (ep->type == bp_catchpoint); |
c906108c SS |
4457 | } |
4458 | ||
f431efe5 PA |
4459 | /* Frees any storage that is part of a bpstat. Does not walk the |
4460 | 'next' chain. */ | |
4461 | ||
4462 | static void | |
198757a8 VP |
4463 | bpstat_free (bpstat bs) |
4464 | { | |
4465 | if (bs->old_val != NULL) | |
4466 | value_free (bs->old_val); | |
9add0f1b | 4467 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4468 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4469 | xfree (bs); |
4470 | } | |
4471 | ||
c906108c SS |
4472 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4473 | Also free any storage that is part of a bpstat. */ | |
4474 | ||
4475 | void | |
fba45db2 | 4476 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4477 | { |
4478 | bpstat p; | |
4479 | bpstat q; | |
4480 | ||
4481 | if (bsp == 0) | |
4482 | return; | |
4483 | p = *bsp; | |
4484 | while (p != NULL) | |
4485 | { | |
4486 | q = p->next; | |
198757a8 | 4487 | bpstat_free (p); |
c906108c SS |
4488 | p = q; |
4489 | } | |
4490 | *bsp = NULL; | |
4491 | } | |
4492 | ||
4493 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4494 | is part of the bpstat is copied as well. */ | |
4495 | ||
4496 | bpstat | |
fba45db2 | 4497 | bpstat_copy (bpstat bs) |
c906108c SS |
4498 | { |
4499 | bpstat p = NULL; | |
4500 | bpstat tmp; | |
4501 | bpstat retval = NULL; | |
4502 | ||
4503 | if (bs == NULL) | |
4504 | return bs; | |
4505 | ||
4506 | for (; bs != NULL; bs = bs->next) | |
4507 | { | |
4508 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4509 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4510 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4511 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4512 | if (bs->old_val != NULL) |
3c3185ac JK |
4513 | { |
4514 | tmp->old_val = value_copy (bs->old_val); | |
4515 | release_value (tmp->old_val); | |
4516 | } | |
31cc81e9 | 4517 | |
c906108c SS |
4518 | if (p == NULL) |
4519 | /* This is the first thing in the chain. */ | |
4520 | retval = tmp; | |
4521 | else | |
4522 | p->next = tmp; | |
4523 | p = tmp; | |
4524 | } | |
4525 | p->next = NULL; | |
4526 | return retval; | |
4527 | } | |
4528 | ||
4a64f543 | 4529 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4530 | |
4531 | bpstat | |
fba45db2 | 4532 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4533 | { |
c5aa993b JM |
4534 | if (bsp == NULL) |
4535 | return NULL; | |
c906108c | 4536 | |
c5aa993b JM |
4537 | for (; bsp != NULL; bsp = bsp->next) |
4538 | { | |
f431efe5 | 4539 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4540 | return bsp; |
4541 | } | |
c906108c SS |
4542 | return NULL; |
4543 | } | |
4544 | ||
ab04a2af TT |
4545 | /* See breakpoint.h. */ |
4546 | ||
47591c29 | 4547 | int |
427cd150 | 4548 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4549 | { |
ab04a2af TT |
4550 | for (; bsp != NULL; bsp = bsp->next) |
4551 | { | |
427cd150 TT |
4552 | if (bsp->breakpoint_at == NULL) |
4553 | { | |
4554 | /* A moribund location can never explain a signal other than | |
4555 | GDB_SIGNAL_TRAP. */ | |
4556 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4557 | return 1; |
427cd150 TT |
4558 | } |
4559 | else | |
47591c29 PA |
4560 | { |
4561 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4562 | sig)) | |
4563 | return 1; | |
4564 | } | |
ab04a2af TT |
4565 | } |
4566 | ||
47591c29 | 4567 | return 0; |
ab04a2af TT |
4568 | } |
4569 | ||
4a64f543 MS |
4570 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4571 | stopped at. *BSP upon return is a bpstat which points to the | |
4572 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4573 | good for anything but further calls to bpstat_num). | |
4574 | ||
8671a17b PA |
4575 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4576 | Return -1 if stopped at a breakpoint that has been deleted since | |
4577 | we set it. | |
4578 | Return 1 otherwise. */ | |
c906108c SS |
4579 | |
4580 | int | |
8671a17b | 4581 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4582 | { |
4583 | struct breakpoint *b; | |
4584 | ||
4585 | if ((*bsp) == NULL) | |
4586 | return 0; /* No more breakpoint values */ | |
8671a17b | 4587 | |
4a64f543 MS |
4588 | /* We assume we'll never have several bpstats that correspond to a |
4589 | single breakpoint -- otherwise, this function might return the | |
4590 | same number more than once and this will look ugly. */ | |
f431efe5 | 4591 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4592 | *bsp = (*bsp)->next; |
4593 | if (b == NULL) | |
4594 | return -1; /* breakpoint that's been deleted since */ | |
4595 | ||
4596 | *num = b->number; /* We have its number */ | |
4597 | return 1; | |
c906108c SS |
4598 | } |
4599 | ||
e93ca019 | 4600 | /* See breakpoint.h. */ |
c906108c SS |
4601 | |
4602 | void | |
e93ca019 | 4603 | bpstat_clear_actions (void) |
c906108c | 4604 | { |
e93ca019 JK |
4605 | struct thread_info *tp; |
4606 | bpstat bs; | |
4607 | ||
4608 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4609 | return; | |
4610 | ||
4611 | tp = find_thread_ptid (inferior_ptid); | |
4612 | if (tp == NULL) | |
4613 | return; | |
4614 | ||
4615 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4616 | { |
9add0f1b | 4617 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4618 | |
c906108c SS |
4619 | if (bs->old_val != NULL) |
4620 | { | |
4621 | value_free (bs->old_val); | |
4622 | bs->old_val = NULL; | |
4623 | } | |
4624 | } | |
4625 | } | |
4626 | ||
f3b1572e PA |
4627 | /* Called when a command is about to proceed the inferior. */ |
4628 | ||
4629 | static void | |
4630 | breakpoint_about_to_proceed (void) | |
4631 | { | |
4632 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4633 | { | |
4634 | struct thread_info *tp = inferior_thread (); | |
4635 | ||
4636 | /* Allow inferior function calls in breakpoint commands to not | |
4637 | interrupt the command list. When the call finishes | |
4638 | successfully, the inferior will be standing at the same | |
4639 | breakpoint as if nothing happened. */ | |
16c381f0 | 4640 | if (tp->control.in_infcall) |
f3b1572e PA |
4641 | return; |
4642 | } | |
4643 | ||
4644 | breakpoint_proceeded = 1; | |
4645 | } | |
4646 | ||
4a64f543 MS |
4647 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4648 | command. */ | |
c906108c | 4649 | static void |
4efb68b1 | 4650 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4651 | { |
4652 | executing_breakpoint_commands = 0; | |
4653 | } | |
4654 | ||
abf85f46 JK |
4655 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4656 | or its equivalent. */ | |
4657 | ||
4658 | static int | |
4659 | command_line_is_silent (struct command_line *cmd) | |
4660 | { | |
4f45d445 | 4661 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4662 | } |
4663 | ||
4a64f543 MS |
4664 | /* Execute all the commands associated with all the breakpoints at |
4665 | this location. Any of these commands could cause the process to | |
4666 | proceed beyond this point, etc. We look out for such changes by | |
4667 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4668 | |
347bddb7 PA |
4669 | Returns true if a breakpoint command resumed the inferior. In that |
4670 | case, it is the caller's responsibility to recall it again with the | |
4671 | bpstat of the current thread. */ | |
4672 | ||
4673 | static int | |
4674 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4675 | { |
4676 | bpstat bs; | |
4677 | struct cleanup *old_chain; | |
347bddb7 | 4678 | int again = 0; |
c906108c SS |
4679 | |
4680 | /* Avoid endless recursion if a `source' command is contained | |
4681 | in bs->commands. */ | |
4682 | if (executing_breakpoint_commands) | |
347bddb7 | 4683 | return 0; |
c906108c SS |
4684 | |
4685 | executing_breakpoint_commands = 1; | |
4686 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4687 | ||
cf6c5ffb TT |
4688 | prevent_dont_repeat (); |
4689 | ||
4a64f543 | 4690 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4691 | bs = *bsp; |
4692 | ||
4693 | breakpoint_proceeded = 0; | |
4694 | for (; bs != NULL; bs = bs->next) | |
4695 | { | |
9add0f1b | 4696 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4697 | struct command_line *cmd; |
4698 | struct cleanup *this_cmd_tree_chain; | |
4699 | ||
4700 | /* Take ownership of the BSP's command tree, if it has one. | |
4701 | ||
4702 | The command tree could legitimately contain commands like | |
4703 | 'step' and 'next', which call clear_proceed_status, which | |
4704 | frees stop_bpstat's command tree. To make sure this doesn't | |
4705 | free the tree we're executing out from under us, we need to | |
4706 | take ownership of the tree ourselves. Since a given bpstat's | |
4707 | commands are only executed once, we don't need to copy it; we | |
4708 | can clear the pointer in the bpstat, and make sure we free | |
4709 | the tree when we're done. */ | |
9add0f1b TT |
4710 | ccmd = bs->commands; |
4711 | bs->commands = NULL; | |
abf85f46 JK |
4712 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4713 | cmd = ccmd ? ccmd->commands : NULL; | |
4714 | if (command_line_is_silent (cmd)) | |
4715 | { | |
4716 | /* The action has been already done by bpstat_stop_status. */ | |
4717 | cmd = cmd->next; | |
4718 | } | |
6c50ab1c | 4719 | |
c906108c SS |
4720 | while (cmd != NULL) |
4721 | { | |
4722 | execute_control_command (cmd); | |
4723 | ||
4724 | if (breakpoint_proceeded) | |
4725 | break; | |
4726 | else | |
4727 | cmd = cmd->next; | |
4728 | } | |
6c50ab1c JB |
4729 | |
4730 | /* We can free this command tree now. */ | |
4731 | do_cleanups (this_cmd_tree_chain); | |
4732 | ||
c906108c | 4733 | if (breakpoint_proceeded) |
32c1e744 | 4734 | { |
cb814510 | 4735 | if (current_ui->async) |
347bddb7 PA |
4736 | /* If we are in async mode, then the target might be still |
4737 | running, not stopped at any breakpoint, so nothing for | |
4738 | us to do here -- just return to the event loop. */ | |
4739 | ; | |
32c1e744 VP |
4740 | else |
4741 | /* In sync mode, when execute_control_command returns | |
4742 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4743 | Breakpoint commands for that stop were not run, since |
4744 | execute_command does not run breakpoint commands -- | |
4745 | only command_line_handler does, but that one is not | |
4746 | involved in execution of breakpoint commands. So, we | |
4747 | can now execute breakpoint commands. It should be | |
4748 | noted that making execute_command do bpstat actions is | |
4749 | not an option -- in this case we'll have recursive | |
4750 | invocation of bpstat for each breakpoint with a | |
4751 | command, and can easily blow up GDB stack. Instead, we | |
4752 | return true, which will trigger the caller to recall us | |
4753 | with the new stop_bpstat. */ | |
4754 | again = 1; | |
4755 | break; | |
32c1e744 | 4756 | } |
c906108c | 4757 | } |
c2b8ed2c | 4758 | do_cleanups (old_chain); |
347bddb7 PA |
4759 | return again; |
4760 | } | |
4761 | ||
4762 | void | |
4763 | bpstat_do_actions (void) | |
4764 | { | |
353d1d73 JK |
4765 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4766 | ||
347bddb7 PA |
4767 | /* Do any commands attached to breakpoint we are stopped at. */ |
4768 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4769 | && target_has_execution | |
4770 | && !is_exited (inferior_ptid) | |
4771 | && !is_executing (inferior_ptid)) | |
4772 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4773 | and only return when it is stopped at the next breakpoint, we | |
4774 | keep doing breakpoint actions until it returns false to | |
4775 | indicate the inferior was not resumed. */ | |
16c381f0 | 4776 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4777 | break; |
353d1d73 JK |
4778 | |
4779 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4780 | } |
4781 | ||
fa4727a6 DJ |
4782 | /* Print out the (old or new) value associated with a watchpoint. */ |
4783 | ||
4784 | static void | |
4785 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4786 | { | |
4787 | if (val == NULL) | |
4788 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4789 | else | |
79a45b7d TT |
4790 | { |
4791 | struct value_print_options opts; | |
4792 | get_user_print_options (&opts); | |
4793 | value_print (val, stream, &opts); | |
4794 | } | |
fa4727a6 DJ |
4795 | } |
4796 | ||
f303dbd6 PA |
4797 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4798 | debugging multiple threads. */ | |
4799 | ||
4800 | void | |
4801 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4802 | { | |
4803 | if (ui_out_is_mi_like_p (uiout)) | |
4804 | return; | |
4805 | ||
4806 | ui_out_text (uiout, "\n"); | |
4807 | ||
4808 | if (show_thread_that_caused_stop ()) | |
4809 | { | |
4810 | const char *name; | |
4811 | struct thread_info *thr = inferior_thread (); | |
4812 | ||
4813 | ui_out_text (uiout, "Thread "); | |
4814 | ui_out_field_fmt (uiout, "thread-id", "%s", print_thread_id (thr)); | |
4815 | ||
4816 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4817 | if (name != NULL) | |
4818 | { | |
4819 | ui_out_text (uiout, " \""); | |
4820 | ui_out_field_fmt (uiout, "name", "%s", name); | |
4821 | ui_out_text (uiout, "\""); | |
4822 | } | |
4823 | ||
4824 | ui_out_text (uiout, " hit "); | |
4825 | } | |
4826 | } | |
4827 | ||
e514a9d6 | 4828 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4829 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4830 | 'print_it' in the bpstat structure. Under some circumstances we |
4831 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4832 | normal_stop(). */ |
e514a9d6 JM |
4833 | |
4834 | static enum print_stop_action | |
4835 | print_bp_stop_message (bpstat bs) | |
4836 | { | |
4837 | switch (bs->print_it) | |
4838 | { | |
4839 | case print_it_noop: | |
4a64f543 | 4840 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4841 | return PRINT_UNKNOWN; |
4842 | break; | |
4843 | ||
4844 | case print_it_done: | |
4845 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4846 | relevant messages. */ |
e514a9d6 JM |
4847 | return PRINT_SRC_AND_LOC; |
4848 | break; | |
4849 | ||
4850 | case print_it_normal: | |
4f8d1dc6 | 4851 | { |
f431efe5 PA |
4852 | struct breakpoint *b = bs->breakpoint_at; |
4853 | ||
1a6a67de TJB |
4854 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4855 | which has since been deleted. */ | |
4856 | if (b == NULL) | |
4857 | return PRINT_UNKNOWN; | |
4858 | ||
348d480f PA |
4859 | /* Normal case. Call the breakpoint's print_it method. */ |
4860 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4861 | } |
348d480f | 4862 | break; |
3086aeae | 4863 | |
e514a9d6 | 4864 | default: |
8e65ff28 | 4865 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4866 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4867 | break; |
c906108c | 4868 | } |
c906108c SS |
4869 | } |
4870 | ||
edcc5120 TT |
4871 | /* A helper function that prints a shared library stopped event. */ |
4872 | ||
4873 | static void | |
4874 | print_solib_event (int is_catchpoint) | |
4875 | { | |
4876 | int any_deleted | |
4877 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4878 | int any_added | |
4879 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4880 | ||
4881 | if (!is_catchpoint) | |
4882 | { | |
4883 | if (any_added || any_deleted) | |
4884 | ui_out_text (current_uiout, | |
4885 | _("Stopped due to shared library event:\n")); | |
4886 | else | |
4887 | ui_out_text (current_uiout, | |
4888 | _("Stopped due to shared library event (no " | |
4889 | "libraries added or removed)\n")); | |
4890 | } | |
4891 | ||
4892 | if (ui_out_is_mi_like_p (current_uiout)) | |
4893 | ui_out_field_string (current_uiout, "reason", | |
4894 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4895 | ||
4896 | if (any_deleted) | |
4897 | { | |
4898 | struct cleanup *cleanup; | |
4899 | char *name; | |
4900 | int ix; | |
4901 | ||
4902 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4903 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4904 | "removed"); | |
4905 | for (ix = 0; | |
4906 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4907 | ix, name); | |
4908 | ++ix) | |
4909 | { | |
4910 | if (ix > 0) | |
4911 | ui_out_text (current_uiout, " "); | |
4912 | ui_out_field_string (current_uiout, "library", name); | |
4913 | ui_out_text (current_uiout, "\n"); | |
4914 | } | |
4915 | ||
4916 | do_cleanups (cleanup); | |
4917 | } | |
4918 | ||
4919 | if (any_added) | |
4920 | { | |
4921 | struct so_list *iter; | |
4922 | int ix; | |
4923 | struct cleanup *cleanup; | |
4924 | ||
4925 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4926 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4927 | "added"); | |
4928 | for (ix = 0; | |
4929 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4930 | ix, iter); | |
4931 | ++ix) | |
4932 | { | |
4933 | if (ix > 0) | |
4934 | ui_out_text (current_uiout, " "); | |
4935 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4936 | ui_out_text (current_uiout, "\n"); | |
4937 | } | |
4938 | ||
4939 | do_cleanups (cleanup); | |
4940 | } | |
4941 | } | |
4942 | ||
e514a9d6 JM |
4943 | /* Print a message indicating what happened. This is called from |
4944 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4945 | list - a list of the eventpoints that caused this stop. KIND is |
4946 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4947 | routine calls the generic print routine for printing a message |
4948 | about reasons for stopping. This will print (for example) the | |
4949 | "Breakpoint n," part of the output. The return value of this | |
4950 | routine is one of: | |
c906108c | 4951 | |
4a64f543 | 4952 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4953 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4954 | code to print the location. An example is |
c5aa993b JM |
4955 | "Breakpoint 1, " which should be followed by |
4956 | the location. | |
917317f4 | 4957 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4958 | to also print the location part of the message. |
4959 | An example is the catch/throw messages, which | |
4a64f543 | 4960 | don't require a location appended to the end. |
917317f4 | 4961 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4962 | further info to be printed. */ |
c906108c | 4963 | |
917317f4 | 4964 | enum print_stop_action |
36dfb11c | 4965 | bpstat_print (bpstat bs, int kind) |
c906108c | 4966 | { |
f486487f | 4967 | enum print_stop_action val; |
c5aa993b | 4968 | |
c906108c | 4969 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4970 | (Currently all watchpoints go on the bpstat whether hit or not. |
4971 | That probably could (should) be changed, provided care is taken | |
c906108c | 4972 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4973 | for (; bs; bs = bs->next) |
4974 | { | |
4975 | val = print_bp_stop_message (bs); | |
4976 | if (val == PRINT_SRC_ONLY | |
4977 | || val == PRINT_SRC_AND_LOC | |
4978 | || val == PRINT_NOTHING) | |
4979 | return val; | |
4980 | } | |
c906108c | 4981 | |
36dfb11c TT |
4982 | /* If we had hit a shared library event breakpoint, |
4983 | print_bp_stop_message would print out this message. If we hit an | |
4984 | OS-level shared library event, do the same thing. */ | |
4985 | if (kind == TARGET_WAITKIND_LOADED) | |
4986 | { | |
edcc5120 | 4987 | print_solib_event (0); |
36dfb11c TT |
4988 | return PRINT_NOTHING; |
4989 | } | |
4990 | ||
e514a9d6 | 4991 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4992 | with and nothing was printed. */ |
917317f4 | 4993 | return PRINT_UNKNOWN; |
c906108c SS |
4994 | } |
4995 | ||
c42bd95a DE |
4996 | /* Evaluate the expression EXP and return 1 if value is zero. |
4997 | This returns the inverse of the condition because it is called | |
4998 | from catch_errors which returns 0 if an exception happened, and if an | |
4999 | exception happens we want execution to stop. | |
4a64f543 | 5000 | The argument is a "struct expression *" that has been cast to a |
c42bd95a | 5001 | "void *" to make it pass through catch_errors. */ |
c906108c SS |
5002 | |
5003 | static int | |
4efb68b1 | 5004 | breakpoint_cond_eval (void *exp) |
c906108c | 5005 | { |
278cd55f | 5006 | struct value *mark = value_mark (); |
c5aa993b | 5007 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 5008 | |
c906108c SS |
5009 | value_free_to_mark (mark); |
5010 | return i; | |
5011 | } | |
5012 | ||
5760d0ab | 5013 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
5014 | |
5015 | static bpstat | |
5760d0ab | 5016 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
5017 | { |
5018 | bpstat bs; | |
5019 | ||
5020 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
5021 | bs->next = NULL; |
5022 | **bs_link_pointer = bs; | |
5023 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
5024 | bs->breakpoint_at = bl->owner; |
5025 | bs->bp_location_at = bl; | |
5026 | incref_bp_location (bl); | |
c906108c SS |
5027 | /* If the condition is false, etc., don't do the commands. */ |
5028 | bs->commands = NULL; | |
5029 | bs->old_val = NULL; | |
5030 | bs->print_it = print_it_normal; | |
5031 | return bs; | |
5032 | } | |
5033 | \f | |
d983da9c DJ |
5034 | /* The target has stopped with waitstatus WS. Check if any hardware |
5035 | watchpoints have triggered, according to the target. */ | |
5036 | ||
5037 | int | |
5038 | watchpoints_triggered (struct target_waitstatus *ws) | |
5039 | { | |
d92524f1 | 5040 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
5041 | CORE_ADDR addr; |
5042 | struct breakpoint *b; | |
5043 | ||
5044 | if (!stopped_by_watchpoint) | |
5045 | { | |
5046 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
5047 | as not triggered. */ | |
5048 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 5049 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
5050 | { |
5051 | struct watchpoint *w = (struct watchpoint *) b; | |
5052 | ||
5053 | w->watchpoint_triggered = watch_triggered_no; | |
5054 | } | |
d983da9c DJ |
5055 | |
5056 | return 0; | |
5057 | } | |
5058 | ||
5059 | if (!target_stopped_data_address (¤t_target, &addr)) | |
5060 | { | |
5061 | /* We were stopped by a watchpoint, but we don't know where. | |
5062 | Mark all watchpoints as unknown. */ | |
5063 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 5064 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
5065 | { |
5066 | struct watchpoint *w = (struct watchpoint *) b; | |
5067 | ||
5068 | w->watchpoint_triggered = watch_triggered_unknown; | |
5069 | } | |
d983da9c | 5070 | |
3c4797ba | 5071 | return 1; |
d983da9c DJ |
5072 | } |
5073 | ||
5074 | /* The target could report the data address. Mark watchpoints | |
5075 | affected by this data address as triggered, and all others as not | |
5076 | triggered. */ | |
5077 | ||
5078 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 5079 | if (is_hardware_watchpoint (b)) |
d983da9c | 5080 | { |
3a5c3e22 | 5081 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 5082 | struct bp_location *loc; |
d983da9c | 5083 | |
3a5c3e22 | 5084 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 5085 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 5086 | { |
3a5c3e22 | 5087 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 5088 | { |
3a5c3e22 PA |
5089 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
5090 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
5091 | |
5092 | if (newaddr == start) | |
5093 | { | |
3a5c3e22 | 5094 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5095 | break; |
5096 | } | |
5097 | } | |
5098 | /* Exact match not required. Within range is sufficient. */ | |
5099 | else if (target_watchpoint_addr_within_range (¤t_target, | |
5100 | addr, loc->address, | |
5101 | loc->length)) | |
5102 | { | |
3a5c3e22 | 5103 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5104 | break; |
5105 | } | |
5106 | } | |
d983da9c DJ |
5107 | } |
5108 | ||
5109 | return 1; | |
5110 | } | |
5111 | ||
c906108c SS |
5112 | /* Possible return values for watchpoint_check (this can't be an enum |
5113 | because of check_errors). */ | |
5114 | /* The watchpoint has been deleted. */ | |
5115 | #define WP_DELETED 1 | |
5116 | /* The value has changed. */ | |
5117 | #define WP_VALUE_CHANGED 2 | |
5118 | /* The value has not changed. */ | |
5119 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
5120 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
5121 | #define WP_IGNORE 4 | |
c906108c SS |
5122 | |
5123 | #define BP_TEMPFLAG 1 | |
5124 | #define BP_HARDWAREFLAG 2 | |
5125 | ||
4a64f543 MS |
5126 | /* Evaluate watchpoint condition expression and check if its value |
5127 | changed. | |
553e4c11 JB |
5128 | |
5129 | P should be a pointer to struct bpstat, but is defined as a void * | |
5130 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
5131 | |
5132 | static int | |
4efb68b1 | 5133 | watchpoint_check (void *p) |
c906108c SS |
5134 | { |
5135 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 5136 | struct watchpoint *b; |
c906108c SS |
5137 | struct frame_info *fr; |
5138 | int within_current_scope; | |
5139 | ||
f431efe5 | 5140 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 5141 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 5142 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5143 | |
f6bc2008 PA |
5144 | /* If this is a local watchpoint, we only want to check if the |
5145 | watchpoint frame is in scope if the current thread is the thread | |
5146 | that was used to create the watchpoint. */ | |
5147 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5148 | return WP_IGNORE; |
f6bc2008 | 5149 | |
c906108c SS |
5150 | if (b->exp_valid_block == NULL) |
5151 | within_current_scope = 1; | |
5152 | else | |
5153 | { | |
edb3359d DJ |
5154 | struct frame_info *frame = get_current_frame (); |
5155 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
5156 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5157 | ||
c9cf6e20 | 5158 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
5159 | still in the function but the stack frame has already been |
5160 | invalidated. Since we can't rely on the values of local | |
5161 | variables after the stack has been destroyed, we are treating | |
5162 | the watchpoint in that state as `not changed' without further | |
5163 | checking. Don't mark watchpoints as changed if the current | |
5164 | frame is in an epilogue - even if they are in some other | |
5165 | frame, our view of the stack is likely to be wrong and | |
5166 | frame_find_by_id could error out. */ | |
c9cf6e20 | 5167 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 5168 | return WP_IGNORE; |
a0f49112 | 5169 | |
101dcfbe | 5170 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5171 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5172 | |
5173 | /* If we've gotten confused in the unwinder, we might have | |
5174 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5175 | if (within_current_scope) |
5176 | { | |
5177 | struct symbol *function; | |
5178 | ||
5179 | function = get_frame_function (fr); | |
5180 | if (function == NULL | |
5181 | || !contained_in (b->exp_valid_block, | |
5182 | SYMBOL_BLOCK_VALUE (function))) | |
5183 | within_current_scope = 0; | |
5184 | } | |
69fbadd5 | 5185 | |
edb3359d | 5186 | if (within_current_scope) |
c906108c SS |
5187 | /* If we end up stopping, the current frame will get selected |
5188 | in normal_stop. So this call to select_frame won't affect | |
5189 | the user. */ | |
0f7d239c | 5190 | select_frame (fr); |
c906108c | 5191 | } |
c5aa993b | 5192 | |
c906108c SS |
5193 | if (within_current_scope) |
5194 | { | |
4a64f543 MS |
5195 | /* We use value_{,free_to_}mark because it could be a *long* |
5196 | time before we return to the command level and call | |
5197 | free_all_values. We can't call free_all_values because we | |
5198 | might be in the middle of evaluating a function call. */ | |
c906108c | 5199 | |
0cf6dd15 | 5200 | int pc = 0; |
9c06b0b4 | 5201 | struct value *mark; |
fa4727a6 DJ |
5202 | struct value *new_val; |
5203 | ||
3a5c3e22 | 5204 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
5205 | /* Since we don't know the exact trigger address (from |
5206 | stopped_data_address), just tell the user we've triggered | |
5207 | a mask watchpoint. */ | |
5208 | return WP_VALUE_CHANGED; | |
5209 | ||
5210 | mark = value_mark (); | |
4d01a485 | 5211 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 5212 | |
bb9d5f81 PP |
5213 | if (b->val_bitsize != 0) |
5214 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5215 | ||
4a64f543 MS |
5216 | /* We use value_equal_contents instead of value_equal because |
5217 | the latter coerces an array to a pointer, thus comparing just | |
5218 | the address of the array instead of its contents. This is | |
5219 | not what we want. */ | |
fa4727a6 | 5220 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 5221 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 5222 | { |
fa4727a6 DJ |
5223 | if (new_val != NULL) |
5224 | { | |
5225 | release_value (new_val); | |
5226 | value_free_to_mark (mark); | |
5227 | } | |
c906108c SS |
5228 | bs->old_val = b->val; |
5229 | b->val = new_val; | |
fa4727a6 | 5230 | b->val_valid = 1; |
c906108c SS |
5231 | return WP_VALUE_CHANGED; |
5232 | } | |
5233 | else | |
5234 | { | |
60e1c644 | 5235 | /* Nothing changed. */ |
c906108c | 5236 | value_free_to_mark (mark); |
c906108c SS |
5237 | return WP_VALUE_NOT_CHANGED; |
5238 | } | |
5239 | } | |
5240 | else | |
5241 | { | |
5242 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
5243 | if we temporarily ignored the watchpoint, then when |
5244 | we reenter the block in which it is valid it contains | |
5245 | garbage (in the case of a function, it may have two | |
5246 | garbage values, one before and one after the prologue). | |
5247 | So we can't even detect the first assignment to it and | |
5248 | watch after that (since the garbage may or may not equal | |
5249 | the first value assigned). */ | |
348d480f PA |
5250 | /* We print all the stop information in |
5251 | breakpoint_ops->print_it, but in this case, by the time we | |
5252 | call breakpoint_ops->print_it this bp will be deleted | |
5253 | already. So we have no choice but print the information | |
5254 | here. */ | |
468afe6c | 5255 | |
0e454242 | 5256 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
5257 | { |
5258 | struct ui_out *uiout = current_uiout; | |
5259 | ||
5260 | if (ui_out_is_mi_like_p (uiout)) | |
5261 | ui_out_field_string | |
5262 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
5263 | ui_out_text (uiout, "\nWatchpoint "); | |
5264 | ui_out_field_int (uiout, "wpnum", b->base.number); | |
5265 | ui_out_text (uiout, | |
5266 | " deleted because the program has left the block in\n" | |
5267 | "which its expression is valid.\n"); | |
5268 | } | |
4ce44c66 | 5269 | |
cdac0397 | 5270 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 5271 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 5272 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5273 | |
5274 | return WP_DELETED; | |
5275 | } | |
5276 | } | |
5277 | ||
18a18393 | 5278 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5279 | breakpoint location BL. This function does not check if we should |
5280 | stop, only if BL explains the stop. */ | |
5281 | ||
18a18393 | 5282 | static int |
6c95b8df | 5283 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5284 | struct address_space *aspace, CORE_ADDR bp_addr, |
5285 | const struct target_waitstatus *ws) | |
18a18393 VP |
5286 | { |
5287 | struct breakpoint *b = bl->owner; | |
5288 | ||
348d480f | 5289 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5290 | gdb_assert (b != NULL); |
5291 | ||
09ac7c10 | 5292 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5293 | } |
5294 | ||
3a5c3e22 PA |
5295 | /* Determine if the watched values have actually changed, and we |
5296 | should stop. If not, set BS->stop to 0. */ | |
5297 | ||
18a18393 VP |
5298 | static void |
5299 | bpstat_check_watchpoint (bpstat bs) | |
5300 | { | |
2bdf28a0 | 5301 | const struct bp_location *bl; |
3a5c3e22 | 5302 | struct watchpoint *b; |
2bdf28a0 JK |
5303 | |
5304 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5305 | bl = bs->bp_location_at; |
2bdf28a0 | 5306 | gdb_assert (bl != NULL); |
3a5c3e22 | 5307 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5308 | gdb_assert (b != NULL); |
18a18393 | 5309 | |
18a18393 | 5310 | { |
18a18393 VP |
5311 | int must_check_value = 0; |
5312 | ||
3a5c3e22 | 5313 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
5314 | /* For a software watchpoint, we must always check the |
5315 | watched value. */ | |
5316 | must_check_value = 1; | |
5317 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5318 | /* We have a hardware watchpoint (read, write, or access) | |
5319 | and the target earlier reported an address watched by | |
5320 | this watchpoint. */ | |
5321 | must_check_value = 1; | |
5322 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 5323 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
5324 | /* We were stopped by a hardware watchpoint, but the target could |
5325 | not report the data address. We must check the watchpoint's | |
5326 | value. Access and read watchpoints are out of luck; without | |
5327 | a data address, we can't figure it out. */ | |
5328 | must_check_value = 1; | |
3a5c3e22 | 5329 | |
18a18393 VP |
5330 | if (must_check_value) |
5331 | { | |
3e43a32a MS |
5332 | char *message |
5333 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 5334 | b->base.number); |
18a18393 VP |
5335 | struct cleanup *cleanups = make_cleanup (xfree, message); |
5336 | int e = catch_errors (watchpoint_check, bs, message, | |
5337 | RETURN_MASK_ALL); | |
5338 | do_cleanups (cleanups); | |
5339 | switch (e) | |
5340 | { | |
5341 | case WP_DELETED: | |
5342 | /* We've already printed what needs to be printed. */ | |
5343 | bs->print_it = print_it_done; | |
5344 | /* Stop. */ | |
5345 | break; | |
60e1c644 PA |
5346 | case WP_IGNORE: |
5347 | bs->print_it = print_it_noop; | |
5348 | bs->stop = 0; | |
5349 | break; | |
18a18393 | 5350 | case WP_VALUE_CHANGED: |
3a5c3e22 | 5351 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 5352 | { |
85d721b8 PA |
5353 | /* There are two cases to consider here: |
5354 | ||
4a64f543 | 5355 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5356 | In that case, trust the target, and always report |
5357 | the watchpoint hit to the user. Even though | |
5358 | reads don't cause value changes, the value may | |
5359 | have changed since the last time it was read, and | |
5360 | since we're not trapping writes, we will not see | |
5361 | those, and as such we should ignore our notion of | |
5362 | old value. | |
5363 | ||
4a64f543 | 5364 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5365 | reads and writes. There are two ways this may |
5366 | happen: | |
5367 | ||
4a64f543 | 5368 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5369 | reads only, but can break on accesses (reads or |
5370 | writes), such as e.g., x86. We detect this case | |
5371 | at the time we try to insert read watchpoints. | |
5372 | ||
4a64f543 | 5373 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5374 | watchpoints, but, the user set an access or write |
5375 | watchpoint watching the same memory as this read | |
5376 | watchpoint. | |
5377 | ||
5378 | If we're watching memory writes as well as reads, | |
5379 | ignore watchpoint hits when we find that the | |
5380 | value hasn't changed, as reads don't cause | |
5381 | changes. This still gives false positives when | |
5382 | the program writes the same value to memory as | |
5383 | what there was already in memory (we will confuse | |
5384 | it for a read), but it's much better than | |
5385 | nothing. */ | |
5386 | ||
5387 | int other_write_watchpoint = 0; | |
5388 | ||
5389 | if (bl->watchpoint_type == hw_read) | |
5390 | { | |
5391 | struct breakpoint *other_b; | |
5392 | ||
5393 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5394 | if (other_b->type == bp_hardware_watchpoint |
5395 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5396 | { |
3a5c3e22 PA |
5397 | struct watchpoint *other_w = |
5398 | (struct watchpoint *) other_b; | |
5399 | ||
5400 | if (other_w->watchpoint_triggered | |
5401 | == watch_triggered_yes) | |
5402 | { | |
5403 | other_write_watchpoint = 1; | |
5404 | break; | |
5405 | } | |
85d721b8 PA |
5406 | } |
5407 | } | |
5408 | ||
5409 | if (other_write_watchpoint | |
5410 | || bl->watchpoint_type == hw_access) | |
5411 | { | |
5412 | /* We're watching the same memory for writes, | |
5413 | and the value changed since the last time we | |
5414 | updated it, so this trap must be for a write. | |
5415 | Ignore it. */ | |
5416 | bs->print_it = print_it_noop; | |
5417 | bs->stop = 0; | |
5418 | } | |
18a18393 VP |
5419 | } |
5420 | break; | |
5421 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
5422 | if (b->base.type == bp_hardware_watchpoint |
5423 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
5424 | { |
5425 | /* Don't stop: write watchpoints shouldn't fire if | |
5426 | the value hasn't changed. */ | |
5427 | bs->print_it = print_it_noop; | |
5428 | bs->stop = 0; | |
5429 | } | |
5430 | /* Stop. */ | |
5431 | break; | |
5432 | default: | |
5433 | /* Can't happen. */ | |
5434 | case 0: | |
5435 | /* Error from catch_errors. */ | |
468afe6c | 5436 | { |
0e454242 | 5437 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
5438 | { |
5439 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5440 | b->base.number); | |
5441 | } | |
5442 | watchpoint_del_at_next_stop (b); | |
5443 | /* We've already printed what needs to be printed. */ | |
5444 | bs->print_it = print_it_done; | |
5445 | } | |
18a18393 VP |
5446 | break; |
5447 | } | |
5448 | } | |
5449 | else /* must_check_value == 0 */ | |
5450 | { | |
5451 | /* This is a case where some watchpoint(s) triggered, but | |
5452 | not at the address of this watchpoint, or else no | |
5453 | watchpoint triggered after all. So don't print | |
5454 | anything for this watchpoint. */ | |
5455 | bs->print_it = print_it_noop; | |
5456 | bs->stop = 0; | |
5457 | } | |
5458 | } | |
5459 | } | |
5460 | ||
7d4df6a4 DE |
5461 | /* For breakpoints that are currently marked as telling gdb to stop, |
5462 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5463 | of breakpoint referred to by BS. If we should not stop for this |
5464 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5465 | |
18a18393 VP |
5466 | static void |
5467 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5468 | { | |
2bdf28a0 JK |
5469 | const struct bp_location *bl; |
5470 | struct breakpoint *b; | |
7d4df6a4 DE |
5471 | int value_is_zero = 0; |
5472 | struct expression *cond; | |
5473 | ||
5474 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5475 | |
5476 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5477 | bl = bs->bp_location_at; |
2bdf28a0 | 5478 | gdb_assert (bl != NULL); |
f431efe5 | 5479 | b = bs->breakpoint_at; |
2bdf28a0 | 5480 | gdb_assert (b != NULL); |
18a18393 | 5481 | |
b775012e LM |
5482 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5483 | need to do so again since GDB does not know if we stopped due to a | |
5484 | breakpoint or a single step breakpoint. */ | |
5485 | ||
18a18393 | 5486 | if (frame_id_p (b->frame_id) |
edb3359d | 5487 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5488 | { |
7d4df6a4 DE |
5489 | bs->stop = 0; |
5490 | return; | |
5491 | } | |
60e1c644 | 5492 | |
12ab52e9 PA |
5493 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5494 | evaluating the condition if this isn't the specified | |
5495 | thread/task. */ | |
5d5658a1 | 5496 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5497 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5498 | ||
6c1b0f7b DE |
5499 | { |
5500 | bs->stop = 0; | |
5501 | return; | |
5502 | } | |
5503 | ||
6dddc817 DE |
5504 | /* Evaluate extension language breakpoints that have a "stop" method |
5505 | implemented. */ | |
5506 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5507 | |
7d4df6a4 DE |
5508 | if (is_watchpoint (b)) |
5509 | { | |
5510 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5511 | |
4d01a485 | 5512 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5513 | } |
5514 | else | |
4d01a485 | 5515 | cond = bl->cond.get (); |
60e1c644 | 5516 | |
7d4df6a4 DE |
5517 | if (cond && b->disposition != disp_del_at_next_stop) |
5518 | { | |
5519 | int within_current_scope = 1; | |
5520 | struct watchpoint * w; | |
60e1c644 | 5521 | |
7d4df6a4 DE |
5522 | /* We use value_mark and value_free_to_mark because it could |
5523 | be a long time before we return to the command level and | |
5524 | call free_all_values. We can't call free_all_values | |
5525 | because we might be in the middle of evaluating a | |
5526 | function call. */ | |
5527 | struct value *mark = value_mark (); | |
5528 | ||
5529 | if (is_watchpoint (b)) | |
5530 | w = (struct watchpoint *) b; | |
5531 | else | |
5532 | w = NULL; | |
5533 | ||
5534 | /* Need to select the frame, with all that implies so that | |
5535 | the conditions will have the right context. Because we | |
5536 | use the frame, we will not see an inlined function's | |
5537 | variables when we arrive at a breakpoint at the start | |
5538 | of the inlined function; the current frame will be the | |
5539 | call site. */ | |
5540 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5541 | select_frame (get_current_frame ()); | |
5542 | else | |
18a18393 | 5543 | { |
7d4df6a4 DE |
5544 | struct frame_info *frame; |
5545 | ||
5546 | /* For local watchpoint expressions, which particular | |
5547 | instance of a local is being watched matters, so we | |
5548 | keep track of the frame to evaluate the expression | |
5549 | in. To evaluate the condition however, it doesn't | |
5550 | really matter which instantiation of the function | |
5551 | where the condition makes sense triggers the | |
5552 | watchpoint. This allows an expression like "watch | |
5553 | global if q > 10" set in `func', catch writes to | |
5554 | global on all threads that call `func', or catch | |
5555 | writes on all recursive calls of `func' by a single | |
5556 | thread. We simply always evaluate the condition in | |
5557 | the innermost frame that's executing where it makes | |
5558 | sense to evaluate the condition. It seems | |
5559 | intuitive. */ | |
5560 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5561 | if (frame != NULL) | |
5562 | select_frame (frame); | |
5563 | else | |
5564 | within_current_scope = 0; | |
18a18393 | 5565 | } |
7d4df6a4 DE |
5566 | if (within_current_scope) |
5567 | value_is_zero | |
5568 | = catch_errors (breakpoint_cond_eval, cond, | |
5569 | "Error in testing breakpoint condition:\n", | |
5570 | RETURN_MASK_ALL); | |
5571 | else | |
18a18393 | 5572 | { |
7d4df6a4 DE |
5573 | warning (_("Watchpoint condition cannot be tested " |
5574 | "in the current scope")); | |
5575 | /* If we failed to set the right context for this | |
5576 | watchpoint, unconditionally report it. */ | |
5577 | value_is_zero = 0; | |
18a18393 | 5578 | } |
7d4df6a4 DE |
5579 | /* FIXME-someday, should give breakpoint #. */ |
5580 | value_free_to_mark (mark); | |
18a18393 | 5581 | } |
7d4df6a4 DE |
5582 | |
5583 | if (cond && value_is_zero) | |
5584 | { | |
5585 | bs->stop = 0; | |
5586 | } | |
7d4df6a4 DE |
5587 | else if (b->ignore_count > 0) |
5588 | { | |
5589 | b->ignore_count--; | |
5590 | bs->stop = 0; | |
5591 | /* Increase the hit count even though we don't stop. */ | |
5592 | ++(b->hit_count); | |
5593 | observer_notify_breakpoint_modified (b); | |
5594 | } | |
18a18393 VP |
5595 | } |
5596 | ||
1cf4d951 PA |
5597 | /* Returns true if we need to track moribund locations of LOC's type |
5598 | on the current target. */ | |
5599 | ||
5600 | static int | |
5601 | need_moribund_for_location_type (struct bp_location *loc) | |
5602 | { | |
5603 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5604 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5605 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5606 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5607 | } | |
5608 | ||
18a18393 | 5609 | |
9709f61c | 5610 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5611 | BP_ADDR in thread PTID. |
c906108c | 5612 | |
d983da9c | 5613 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5614 | don't understand this stop. Result is a chain of bpstat's such |
5615 | that: | |
c906108c | 5616 | |
c5aa993b | 5617 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5618 | |
c5aa993b | 5619 | if we understand why we stopped, the result is not null. |
c906108c | 5620 | |
c5aa993b JM |
5621 | Each element of the chain refers to a particular breakpoint or |
5622 | watchpoint at which we have stopped. (We may have stopped for | |
5623 | several reasons concurrently.) | |
c906108c | 5624 | |
c5aa993b JM |
5625 | Each element of the chain has valid next, breakpoint_at, |
5626 | commands, FIXME??? fields. */ | |
c906108c SS |
5627 | |
5628 | bpstat | |
6c95b8df | 5629 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5630 | CORE_ADDR bp_addr, ptid_t ptid, |
5631 | const struct target_waitstatus *ws) | |
c906108c | 5632 | { |
0d381245 | 5633 | struct breakpoint *b = NULL; |
afe38095 | 5634 | struct bp_location *bl; |
20874c92 | 5635 | struct bp_location *loc; |
5760d0ab JK |
5636 | /* First item of allocated bpstat's. */ |
5637 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5638 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5639 | bpstat bs; |
20874c92 | 5640 | int ix; |
429374b8 | 5641 | int need_remove_insert; |
f431efe5 | 5642 | int removed_any; |
c906108c | 5643 | |
f431efe5 PA |
5644 | /* First, build the bpstat chain with locations that explain a |
5645 | target stop, while being careful to not set the target running, | |
5646 | as that may invalidate locations (in particular watchpoint | |
5647 | locations are recreated). Resuming will happen here with | |
5648 | breakpoint conditions or watchpoint expressions that include | |
5649 | inferior function calls. */ | |
c5aa993b | 5650 | |
429374b8 JK |
5651 | ALL_BREAKPOINTS (b) |
5652 | { | |
1a853c52 | 5653 | if (!breakpoint_enabled (b)) |
429374b8 | 5654 | continue; |
a5606eee | 5655 | |
429374b8 JK |
5656 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5657 | { | |
4a64f543 MS |
5658 | /* For hardware watchpoints, we look only at the first |
5659 | location. The watchpoint_check function will work on the | |
5660 | entire expression, not the individual locations. For | |
5661 | read watchpoints, the watchpoints_triggered function has | |
5662 | checked all locations already. */ | |
429374b8 JK |
5663 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5664 | break; | |
18a18393 | 5665 | |
f6592439 | 5666 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5667 | continue; |
c5aa993b | 5668 | |
09ac7c10 | 5669 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5670 | continue; |
c5aa993b | 5671 | |
4a64f543 MS |
5672 | /* Come here if it's a watchpoint, or if the break address |
5673 | matches. */ | |
c5aa993b | 5674 | |
4a64f543 MS |
5675 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5676 | explain stop. */ | |
c5aa993b | 5677 | |
f431efe5 PA |
5678 | /* Assume we stop. Should we find a watchpoint that is not |
5679 | actually triggered, or if the condition of the breakpoint | |
5680 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5681 | bs->stop = 1; |
5682 | bs->print = 1; | |
d983da9c | 5683 | |
f431efe5 PA |
5684 | /* If this is a scope breakpoint, mark the associated |
5685 | watchpoint as triggered so that we will handle the | |
5686 | out-of-scope event. We'll get to the watchpoint next | |
5687 | iteration. */ | |
d0fb5eae | 5688 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5689 | { |
5690 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5691 | ||
5692 | w->watchpoint_triggered = watch_triggered_yes; | |
5693 | } | |
f431efe5 PA |
5694 | } |
5695 | } | |
5696 | ||
7c16b83e | 5697 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5698 | if (!target_supports_stopped_by_sw_breakpoint () |
5699 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5700 | { |
1cf4d951 | 5701 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5702 | { |
1cf4d951 PA |
5703 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5704 | && need_moribund_for_location_type (loc)) | |
5705 | { | |
5706 | bs = bpstat_alloc (loc, &bs_link); | |
5707 | /* For hits of moribund locations, we should just proceed. */ | |
5708 | bs->stop = 0; | |
5709 | bs->print = 0; | |
5710 | bs->print_it = print_it_noop; | |
5711 | } | |
f431efe5 PA |
5712 | } |
5713 | } | |
5714 | ||
edcc5120 TT |
5715 | /* A bit of special processing for shlib breakpoints. We need to |
5716 | process solib loading here, so that the lists of loaded and | |
5717 | unloaded libraries are correct before we handle "catch load" and | |
5718 | "catch unload". */ | |
5719 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5720 | { | |
5d268276 | 5721 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5722 | { |
5723 | handle_solib_event (); | |
5724 | break; | |
5725 | } | |
5726 | } | |
5727 | ||
f431efe5 PA |
5728 | /* Now go through the locations that caused the target to stop, and |
5729 | check whether we're interested in reporting this stop to higher | |
5730 | layers, or whether we should resume the target transparently. */ | |
5731 | ||
5732 | removed_any = 0; | |
5733 | ||
5760d0ab | 5734 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5735 | { |
5736 | if (!bs->stop) | |
5737 | continue; | |
5738 | ||
f431efe5 | 5739 | b = bs->breakpoint_at; |
348d480f PA |
5740 | b->ops->check_status (bs); |
5741 | if (bs->stop) | |
28010a5d | 5742 | { |
348d480f | 5743 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5744 | |
429374b8 JK |
5745 | if (bs->stop) |
5746 | { | |
5747 | ++(b->hit_count); | |
8d3788bd | 5748 | observer_notify_breakpoint_modified (b); |
c906108c | 5749 | |
4a64f543 | 5750 | /* We will stop here. */ |
429374b8 JK |
5751 | if (b->disposition == disp_disable) |
5752 | { | |
816338b5 | 5753 | --(b->enable_count); |
1a853c52 | 5754 | if (b->enable_count <= 0) |
429374b8 | 5755 | b->enable_state = bp_disabled; |
f431efe5 | 5756 | removed_any = 1; |
429374b8 JK |
5757 | } |
5758 | if (b->silent) | |
5759 | bs->print = 0; | |
5760 | bs->commands = b->commands; | |
9add0f1b | 5761 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5762 | if (command_line_is_silent (bs->commands |
5763 | ? bs->commands->commands : NULL)) | |
5764 | bs->print = 0; | |
9d6e6e84 HZ |
5765 | |
5766 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5767 | } |
5768 | ||
348d480f | 5769 | } |
a9b3a50f PA |
5770 | |
5771 | /* Print nothing for this entry if we don't stop or don't | |
5772 | print. */ | |
5773 | if (!bs->stop || !bs->print) | |
5774 | bs->print_it = print_it_noop; | |
429374b8 | 5775 | } |
876fa593 | 5776 | |
d983da9c DJ |
5777 | /* If we aren't stopping, the value of some hardware watchpoint may |
5778 | not have changed, but the intermediate memory locations we are | |
5779 | watching may have. Don't bother if we're stopping; this will get | |
5780 | done later. */ | |
d832cb68 | 5781 | need_remove_insert = 0; |
5760d0ab JK |
5782 | if (! bpstat_causes_stop (bs_head)) |
5783 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5784 | if (!bs->stop |
f431efe5 PA |
5785 | && bs->breakpoint_at |
5786 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5787 | { |
3a5c3e22 PA |
5788 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5789 | ||
5790 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5791 | need_remove_insert = 1; |
d983da9c DJ |
5792 | } |
5793 | ||
d832cb68 | 5794 | if (need_remove_insert) |
44702360 | 5795 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5796 | else if (removed_any) |
44702360 | 5797 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5798 | |
5760d0ab | 5799 | return bs_head; |
c906108c | 5800 | } |
628fe4e4 JK |
5801 | |
5802 | static void | |
5803 | handle_jit_event (void) | |
5804 | { | |
5805 | struct frame_info *frame; | |
5806 | struct gdbarch *gdbarch; | |
5807 | ||
243a9253 PA |
5808 | if (debug_infrun) |
5809 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5810 | ||
628fe4e4 JK |
5811 | /* Switch terminal for any messages produced by |
5812 | breakpoint_re_set. */ | |
5813 | target_terminal_ours_for_output (); | |
5814 | ||
5815 | frame = get_current_frame (); | |
5816 | gdbarch = get_frame_arch (frame); | |
5817 | ||
5818 | jit_event_handler (gdbarch); | |
5819 | ||
5820 | target_terminal_inferior (); | |
5821 | } | |
5822 | ||
5823 | /* Prepare WHAT final decision for infrun. */ | |
5824 | ||
5825 | /* Decide what infrun needs to do with this bpstat. */ | |
5826 | ||
c906108c | 5827 | struct bpstat_what |
0e30163f | 5828 | bpstat_what (bpstat bs_head) |
c906108c | 5829 | { |
c906108c | 5830 | struct bpstat_what retval; |
0e30163f | 5831 | bpstat bs; |
c906108c | 5832 | |
628fe4e4 | 5833 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5834 | retval.call_dummy = STOP_NONE; |
186c406b | 5835 | retval.is_longjmp = 0; |
628fe4e4 | 5836 | |
0e30163f | 5837 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5838 | { |
628fe4e4 JK |
5839 | /* Extract this BS's action. After processing each BS, we check |
5840 | if its action overrides all we've seem so far. */ | |
5841 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5842 | enum bptype bptype; | |
5843 | ||
c906108c | 5844 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5845 | { |
5846 | /* I suspect this can happen if it was a momentary | |
5847 | breakpoint which has since been deleted. */ | |
5848 | bptype = bp_none; | |
5849 | } | |
20874c92 | 5850 | else |
f431efe5 | 5851 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5852 | |
5853 | switch (bptype) | |
c906108c SS |
5854 | { |
5855 | case bp_none: | |
628fe4e4 | 5856 | break; |
c906108c SS |
5857 | case bp_breakpoint: |
5858 | case bp_hardware_breakpoint: | |
7c16b83e | 5859 | case bp_single_step: |
c906108c SS |
5860 | case bp_until: |
5861 | case bp_finish: | |
a9b3a50f | 5862 | case bp_shlib_event: |
c906108c SS |
5863 | if (bs->stop) |
5864 | { | |
5865 | if (bs->print) | |
628fe4e4 | 5866 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5867 | else |
628fe4e4 | 5868 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5869 | } |
5870 | else | |
628fe4e4 | 5871 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5872 | break; |
5873 | case bp_watchpoint: | |
5874 | case bp_hardware_watchpoint: | |
5875 | case bp_read_watchpoint: | |
5876 | case bp_access_watchpoint: | |
5877 | if (bs->stop) | |
5878 | { | |
5879 | if (bs->print) | |
628fe4e4 | 5880 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5881 | else |
628fe4e4 | 5882 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5883 | } |
5884 | else | |
628fe4e4 JK |
5885 | { |
5886 | /* There was a watchpoint, but we're not stopping. | |
5887 | This requires no further action. */ | |
5888 | } | |
c906108c SS |
5889 | break; |
5890 | case bp_longjmp: | |
e2e4d78b | 5891 | case bp_longjmp_call_dummy: |
186c406b | 5892 | case bp_exception: |
0a39bb32 PA |
5893 | if (bs->stop) |
5894 | { | |
5895 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5896 | retval.is_longjmp = bptype != bp_exception; | |
5897 | } | |
5898 | else | |
5899 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5900 | break; |
5901 | case bp_longjmp_resume: | |
186c406b | 5902 | case bp_exception_resume: |
0a39bb32 PA |
5903 | if (bs->stop) |
5904 | { | |
5905 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5906 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5907 | } | |
5908 | else | |
5909 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5910 | break; |
5911 | case bp_step_resume: | |
5912 | if (bs->stop) | |
628fe4e4 JK |
5913 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5914 | else | |
c906108c | 5915 | { |
628fe4e4 JK |
5916 | /* It is for the wrong frame. */ |
5917 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5918 | } |
c906108c | 5919 | break; |
2c03e5be PA |
5920 | case bp_hp_step_resume: |
5921 | if (bs->stop) | |
5922 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5923 | else | |
5924 | { | |
5925 | /* It is for the wrong frame. */ | |
5926 | this_action = BPSTAT_WHAT_SINGLE; | |
5927 | } | |
5928 | break; | |
c906108c | 5929 | case bp_watchpoint_scope: |
c4093a6a | 5930 | case bp_thread_event: |
1900040c | 5931 | case bp_overlay_event: |
0fd8e87f | 5932 | case bp_longjmp_master: |
aa7d318d | 5933 | case bp_std_terminate_master: |
186c406b | 5934 | case bp_exception_master: |
628fe4e4 | 5935 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5936 | break; |
ce78b96d | 5937 | case bp_catchpoint: |
c5aa993b JM |
5938 | if (bs->stop) |
5939 | { | |
5940 | if (bs->print) | |
628fe4e4 | 5941 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5942 | else |
628fe4e4 | 5943 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5944 | } |
5945 | else | |
628fe4e4 JK |
5946 | { |
5947 | /* There was a catchpoint, but we're not stopping. | |
5948 | This requires no further action. */ | |
5949 | } | |
5950 | break; | |
628fe4e4 | 5951 | case bp_jit_event: |
628fe4e4 | 5952 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5953 | break; |
c906108c | 5954 | case bp_call_dummy: |
53a5351d JM |
5955 | /* Make sure the action is stop (silent or noisy), |
5956 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5957 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5958 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5959 | break; |
5960 | case bp_std_terminate: | |
5961 | /* Make sure the action is stop (silent or noisy), | |
5962 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5963 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5964 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5965 | break; |
1042e4c0 | 5966 | case bp_tracepoint: |
7a697b8d | 5967 | case bp_fast_tracepoint: |
0fb4aa4b | 5968 | case bp_static_tracepoint: |
1042e4c0 SS |
5969 | /* Tracepoint hits should not be reported back to GDB, and |
5970 | if one got through somehow, it should have been filtered | |
5971 | out already. */ | |
5972 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5973 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5974 | break; |
5975 | case bp_gnu_ifunc_resolver: | |
5976 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5977 | this_action = BPSTAT_WHAT_SINGLE; | |
5978 | break; | |
5979 | case bp_gnu_ifunc_resolver_return: | |
5980 | /* The breakpoint will be removed, execution will restart from the | |
5981 | PC of the former breakpoint. */ | |
5982 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5983 | break; | |
e7e0cddf SS |
5984 | |
5985 | case bp_dprintf: | |
a11cfd87 HZ |
5986 | if (bs->stop) |
5987 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5988 | else | |
5989 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5990 | break; |
5991 | ||
628fe4e4 JK |
5992 | default: |
5993 | internal_error (__FILE__, __LINE__, | |
5994 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5995 | } |
628fe4e4 | 5996 | |
325fac50 | 5997 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5998 | } |
628fe4e4 | 5999 | |
243a9253 PA |
6000 | return retval; |
6001 | } | |
628fe4e4 | 6002 | |
243a9253 PA |
6003 | void |
6004 | bpstat_run_callbacks (bpstat bs_head) | |
6005 | { | |
6006 | bpstat bs; | |
628fe4e4 | 6007 | |
0e30163f JK |
6008 | for (bs = bs_head; bs != NULL; bs = bs->next) |
6009 | { | |
6010 | struct breakpoint *b = bs->breakpoint_at; | |
6011 | ||
6012 | if (b == NULL) | |
6013 | continue; | |
6014 | switch (b->type) | |
6015 | { | |
243a9253 PA |
6016 | case bp_jit_event: |
6017 | handle_jit_event (); | |
6018 | break; | |
0e30163f JK |
6019 | case bp_gnu_ifunc_resolver: |
6020 | gnu_ifunc_resolver_stop (b); | |
6021 | break; | |
6022 | case bp_gnu_ifunc_resolver_return: | |
6023 | gnu_ifunc_resolver_return_stop (b); | |
6024 | break; | |
6025 | } | |
6026 | } | |
c906108c SS |
6027 | } |
6028 | ||
6029 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
6030 | without hardware support). This isn't related to a specific bpstat, | |
6031 | just to things like whether watchpoints are set. */ | |
6032 | ||
c5aa993b | 6033 | int |
fba45db2 | 6034 | bpstat_should_step (void) |
c906108c SS |
6035 | { |
6036 | struct breakpoint *b; | |
cc59ec59 | 6037 | |
c906108c | 6038 | ALL_BREAKPOINTS (b) |
717a8278 | 6039 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 6040 | return 1; |
c906108c SS |
6041 | return 0; |
6042 | } | |
6043 | ||
67822962 PA |
6044 | int |
6045 | bpstat_causes_stop (bpstat bs) | |
6046 | { | |
6047 | for (; bs != NULL; bs = bs->next) | |
6048 | if (bs->stop) | |
6049 | return 1; | |
6050 | ||
6051 | return 0; | |
6052 | } | |
6053 | ||
c906108c | 6054 | \f |
c5aa993b | 6055 | |
170b53b2 UW |
6056 | /* Compute a string of spaces suitable to indent the next line |
6057 | so it starts at the position corresponding to the table column | |
6058 | named COL_NAME in the currently active table of UIOUT. */ | |
6059 | ||
6060 | static char * | |
6061 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
6062 | { | |
6063 | static char wrap_indent[80]; | |
6064 | int i, total_width, width, align; | |
6065 | char *text; | |
6066 | ||
6067 | total_width = 0; | |
6068 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
6069 | { | |
6070 | if (strcmp (text, col_name) == 0) | |
6071 | { | |
6072 | gdb_assert (total_width < sizeof wrap_indent); | |
6073 | memset (wrap_indent, ' ', total_width); | |
6074 | wrap_indent[total_width] = 0; | |
6075 | ||
6076 | return wrap_indent; | |
6077 | } | |
6078 | ||
6079 | total_width += width + 1; | |
6080 | } | |
6081 | ||
6082 | return NULL; | |
6083 | } | |
6084 | ||
b775012e LM |
6085 | /* Determine if the locations of this breakpoint will have their conditions |
6086 | evaluated by the target, host or a mix of both. Returns the following: | |
6087 | ||
6088 | "host": Host evals condition. | |
6089 | "host or target": Host or Target evals condition. | |
6090 | "target": Target evals condition. | |
6091 | */ | |
6092 | ||
6093 | static const char * | |
6094 | bp_condition_evaluator (struct breakpoint *b) | |
6095 | { | |
6096 | struct bp_location *bl; | |
6097 | char host_evals = 0; | |
6098 | char target_evals = 0; | |
6099 | ||
6100 | if (!b) | |
6101 | return NULL; | |
6102 | ||
6103 | if (!is_breakpoint (b)) | |
6104 | return NULL; | |
6105 | ||
6106 | if (gdb_evaluates_breakpoint_condition_p () | |
6107 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6108 | return condition_evaluation_host; | |
6109 | ||
6110 | for (bl = b->loc; bl; bl = bl->next) | |
6111 | { | |
6112 | if (bl->cond_bytecode) | |
6113 | target_evals++; | |
6114 | else | |
6115 | host_evals++; | |
6116 | } | |
6117 | ||
6118 | if (host_evals && target_evals) | |
6119 | return condition_evaluation_both; | |
6120 | else if (target_evals) | |
6121 | return condition_evaluation_target; | |
6122 | else | |
6123 | return condition_evaluation_host; | |
6124 | } | |
6125 | ||
6126 | /* Determine the breakpoint location's condition evaluator. This is | |
6127 | similar to bp_condition_evaluator, but for locations. */ | |
6128 | ||
6129 | static const char * | |
6130 | bp_location_condition_evaluator (struct bp_location *bl) | |
6131 | { | |
6132 | if (bl && !is_breakpoint (bl->owner)) | |
6133 | return NULL; | |
6134 | ||
6135 | if (gdb_evaluates_breakpoint_condition_p () | |
6136 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6137 | return condition_evaluation_host; | |
6138 | ||
6139 | if (bl && bl->cond_bytecode) | |
6140 | return condition_evaluation_target; | |
6141 | else | |
6142 | return condition_evaluation_host; | |
6143 | } | |
6144 | ||
859825b8 JK |
6145 | /* Print the LOC location out of the list of B->LOC locations. */ |
6146 | ||
170b53b2 UW |
6147 | static void |
6148 | print_breakpoint_location (struct breakpoint *b, | |
6149 | struct bp_location *loc) | |
0d381245 | 6150 | { |
79a45e25 | 6151 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
6152 | struct cleanup *old_chain = save_current_program_space (); |
6153 | ||
859825b8 JK |
6154 | if (loc != NULL && loc->shlib_disabled) |
6155 | loc = NULL; | |
6156 | ||
6c95b8df PA |
6157 | if (loc != NULL) |
6158 | set_current_program_space (loc->pspace); | |
6159 | ||
56435ebe | 6160 | if (b->display_canonical) |
f00aae0f KS |
6161 | ui_out_field_string (uiout, "what", |
6162 | event_location_to_string (b->location)); | |
2f202fde | 6163 | else if (loc && loc->symtab) |
0d381245 VP |
6164 | { |
6165 | struct symbol *sym | |
6166 | = find_pc_sect_function (loc->address, loc->section); | |
6167 | if (sym) | |
6168 | { | |
6169 | ui_out_text (uiout, "in "); | |
6170 | ui_out_field_string (uiout, "func", | |
6171 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
6172 | ui_out_text (uiout, " "); |
6173 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
6174 | ui_out_text (uiout, "at "); | |
0d381245 | 6175 | } |
05cba821 JK |
6176 | ui_out_field_string (uiout, "file", |
6177 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 6178 | ui_out_text (uiout, ":"); |
05cba821 | 6179 | |
0d381245 | 6180 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
6181 | ui_out_field_string (uiout, "fullname", |
6182 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 6183 | |
f8eba3c6 | 6184 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 6185 | } |
859825b8 | 6186 | else if (loc) |
0d381245 | 6187 | { |
f99d8bf4 PA |
6188 | struct ui_file *stb = mem_fileopen (); |
6189 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 6190 | |
f99d8bf4 | 6191 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 6192 | demangle, ""); |
0d381245 | 6193 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
6194 | |
6195 | do_cleanups (stb_chain); | |
0d381245 | 6196 | } |
859825b8 | 6197 | else |
f00aae0f KS |
6198 | { |
6199 | ui_out_field_string (uiout, "pending", | |
6200 | event_location_to_string (b->location)); | |
6201 | /* If extra_string is available, it could be holding a condition | |
6202 | or dprintf arguments. In either case, make sure it is printed, | |
6203 | too, but only for non-MI streams. */ | |
6204 | if (!ui_out_is_mi_like_p (uiout) && b->extra_string != NULL) | |
6205 | { | |
6206 | if (b->type == bp_dprintf) | |
6207 | ui_out_text (uiout, ","); | |
6208 | else | |
6209 | ui_out_text (uiout, " "); | |
6210 | ui_out_text (uiout, b->extra_string); | |
6211 | } | |
6212 | } | |
6c95b8df | 6213 | |
b775012e LM |
6214 | if (loc && is_breakpoint (b) |
6215 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6216 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6217 | { | |
6218 | ui_out_text (uiout, " ("); | |
6219 | ui_out_field_string (uiout, "evaluated-by", | |
6220 | bp_location_condition_evaluator (loc)); | |
6221 | ui_out_text (uiout, ")"); | |
6222 | } | |
6223 | ||
6c95b8df | 6224 | do_cleanups (old_chain); |
0d381245 VP |
6225 | } |
6226 | ||
269b11a2 PA |
6227 | static const char * |
6228 | bptype_string (enum bptype type) | |
c906108c | 6229 | { |
c4093a6a JM |
6230 | struct ep_type_description |
6231 | { | |
6232 | enum bptype type; | |
6233 | char *description; | |
6234 | }; | |
6235 | static struct ep_type_description bptypes[] = | |
c906108c | 6236 | { |
c5aa993b JM |
6237 | {bp_none, "?deleted?"}, |
6238 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6239 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6240 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6241 | {bp_until, "until"}, |
6242 | {bp_finish, "finish"}, | |
6243 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6244 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6245 | {bp_read_watchpoint, "read watchpoint"}, |
6246 | {bp_access_watchpoint, "acc watchpoint"}, | |
6247 | {bp_longjmp, "longjmp"}, | |
6248 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6249 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6250 | {bp_exception, "exception"}, |
6251 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6252 | {bp_step_resume, "step resume"}, |
2c03e5be | 6253 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6254 | {bp_watchpoint_scope, "watchpoint scope"}, |
6255 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6256 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6257 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6258 | {bp_thread_event, "thread events"}, |
1900040c | 6259 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6260 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6261 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6262 | {bp_exception_master, "exception master"}, |
ce78b96d | 6263 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6264 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6265 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6266 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6267 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6268 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6269 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6270 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6271 | }; |
269b11a2 PA |
6272 | |
6273 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6274 | || ((int) type != bptypes[(int) type].type)) | |
6275 | internal_error (__FILE__, __LINE__, | |
6276 | _("bptypes table does not describe type #%d."), | |
6277 | (int) type); | |
6278 | ||
6279 | return bptypes[(int) type].description; | |
6280 | } | |
6281 | ||
998580f1 MK |
6282 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6283 | For CLI, prefix the list with the string 'inf'. */ | |
6284 | ||
6285 | static void | |
6286 | output_thread_groups (struct ui_out *uiout, | |
6287 | const char *field_name, | |
6288 | VEC(int) *inf_num, | |
6289 | int mi_only) | |
6290 | { | |
752eb8b4 | 6291 | struct cleanup *back_to; |
998580f1 MK |
6292 | int is_mi = ui_out_is_mi_like_p (uiout); |
6293 | int inf; | |
6294 | int i; | |
6295 | ||
6296 | /* For backward compatibility, don't display inferiors in CLI unless | |
6297 | there are several. Always display them for MI. */ | |
6298 | if (!is_mi && mi_only) | |
6299 | return; | |
6300 | ||
752eb8b4 TT |
6301 | back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); |
6302 | ||
998580f1 MK |
6303 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6304 | { | |
6305 | if (is_mi) | |
6306 | { | |
6307 | char mi_group[10]; | |
6308 | ||
6309 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
6310 | ui_out_field_string (uiout, NULL, mi_group); | |
6311 | } | |
6312 | else | |
6313 | { | |
6314 | if (i == 0) | |
6315 | ui_out_text (uiout, " inf "); | |
6316 | else | |
6317 | ui_out_text (uiout, ", "); | |
6318 | ||
6319 | ui_out_text (uiout, plongest (inf)); | |
6320 | } | |
6321 | } | |
6322 | ||
6323 | do_cleanups (back_to); | |
6324 | } | |
6325 | ||
269b11a2 PA |
6326 | /* Print B to gdb_stdout. */ |
6327 | ||
6328 | static void | |
6329 | print_one_breakpoint_location (struct breakpoint *b, | |
6330 | struct bp_location *loc, | |
6331 | int loc_number, | |
6332 | struct bp_location **last_loc, | |
269b11a2 PA |
6333 | int allflag) |
6334 | { | |
6335 | struct command_line *l; | |
c2c6d25f | 6336 | static char bpenables[] = "nynny"; |
c906108c | 6337 | |
79a45e25 | 6338 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6339 | int header_of_multiple = 0; |
6340 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6341 | struct value_print_options opts; |
6342 | ||
6343 | get_user_print_options (&opts); | |
0d381245 VP |
6344 | |
6345 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6346 | /* See comment in print_one_breakpoint concerning treatment of |
6347 | breakpoints with single disabled location. */ | |
0d381245 VP |
6348 | if (loc == NULL |
6349 | && (b->loc != NULL | |
6350 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6351 | header_of_multiple = 1; | |
6352 | if (loc == NULL) | |
6353 | loc = b->loc; | |
6354 | ||
c4093a6a JM |
6355 | annotate_record (); |
6356 | ||
6357 | /* 1 */ | |
6358 | annotate_field (0); | |
0d381245 VP |
6359 | if (part_of_multiple) |
6360 | { | |
6361 | char *formatted; | |
0c6773c1 | 6362 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
6363 | ui_out_field_string (uiout, "number", formatted); |
6364 | xfree (formatted); | |
6365 | } | |
6366 | else | |
6367 | { | |
6368 | ui_out_field_int (uiout, "number", b->number); | |
6369 | } | |
c4093a6a JM |
6370 | |
6371 | /* 2 */ | |
6372 | annotate_field (1); | |
0d381245 VP |
6373 | if (part_of_multiple) |
6374 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
6375 | else |
6376 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
6377 | |
6378 | /* 3 */ | |
6379 | annotate_field (2); | |
0d381245 VP |
6380 | if (part_of_multiple) |
6381 | ui_out_field_skip (uiout, "disp"); | |
6382 | else | |
2cec12e5 | 6383 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 6384 | |
c4093a6a JM |
6385 | |
6386 | /* 4 */ | |
6387 | annotate_field (3); | |
0d381245 | 6388 | if (part_of_multiple) |
54e52265 | 6389 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6390 | else |
4a64f543 MS |
6391 | ui_out_field_fmt (uiout, "enabled", "%c", |
6392 | bpenables[(int) b->enable_state]); | |
54e52265 | 6393 | ui_out_spaces (uiout, 2); |
0d381245 | 6394 | |
c4093a6a JM |
6395 | |
6396 | /* 5 and 6 */ | |
3086aeae | 6397 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6398 | { |
4a64f543 MS |
6399 | /* Although the print_one can possibly print all locations, |
6400 | calling it here is not likely to get any nice result. So, | |
6401 | make sure there's just one location. */ | |
0d381245 | 6402 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6403 | b->ops->print_one (b, last_loc); |
0d381245 | 6404 | } |
3086aeae DJ |
6405 | else |
6406 | switch (b->type) | |
6407 | { | |
6408 | case bp_none: | |
6409 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6410 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6411 | break; |
c906108c | 6412 | |
3086aeae DJ |
6413 | case bp_watchpoint: |
6414 | case bp_hardware_watchpoint: | |
6415 | case bp_read_watchpoint: | |
6416 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6417 | { |
6418 | struct watchpoint *w = (struct watchpoint *) b; | |
6419 | ||
6420 | /* Field 4, the address, is omitted (which makes the columns | |
6421 | not line up too nicely with the headers, but the effect | |
6422 | is relatively readable). */ | |
6423 | if (opts.addressprint) | |
6424 | ui_out_field_skip (uiout, "addr"); | |
6425 | annotate_field (5); | |
6426 | ui_out_field_string (uiout, "what", w->exp_string); | |
6427 | } | |
3086aeae DJ |
6428 | break; |
6429 | ||
3086aeae DJ |
6430 | case bp_breakpoint: |
6431 | case bp_hardware_breakpoint: | |
7c16b83e | 6432 | case bp_single_step: |
3086aeae DJ |
6433 | case bp_until: |
6434 | case bp_finish: | |
6435 | case bp_longjmp: | |
6436 | case bp_longjmp_resume: | |
e2e4d78b | 6437 | case bp_longjmp_call_dummy: |
186c406b TT |
6438 | case bp_exception: |
6439 | case bp_exception_resume: | |
3086aeae | 6440 | case bp_step_resume: |
2c03e5be | 6441 | case bp_hp_step_resume: |
3086aeae DJ |
6442 | case bp_watchpoint_scope: |
6443 | case bp_call_dummy: | |
aa7d318d | 6444 | case bp_std_terminate: |
3086aeae DJ |
6445 | case bp_shlib_event: |
6446 | case bp_thread_event: | |
6447 | case bp_overlay_event: | |
0fd8e87f | 6448 | case bp_longjmp_master: |
aa7d318d | 6449 | case bp_std_terminate_master: |
186c406b | 6450 | case bp_exception_master: |
1042e4c0 | 6451 | case bp_tracepoint: |
7a697b8d | 6452 | case bp_fast_tracepoint: |
0fb4aa4b | 6453 | case bp_static_tracepoint: |
e7e0cddf | 6454 | case bp_dprintf: |
4efc6507 | 6455 | case bp_jit_event: |
0e30163f JK |
6456 | case bp_gnu_ifunc_resolver: |
6457 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6458 | if (opts.addressprint) |
3086aeae DJ |
6459 | { |
6460 | annotate_field (4); | |
54e52265 | 6461 | if (header_of_multiple) |
0d381245 | 6462 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 6463 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 6464 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 6465 | else |
5af949e3 UW |
6466 | ui_out_field_core_addr (uiout, "addr", |
6467 | loc->gdbarch, loc->address); | |
3086aeae DJ |
6468 | } |
6469 | annotate_field (5); | |
0d381245 | 6470 | if (!header_of_multiple) |
170b53b2 | 6471 | print_breakpoint_location (b, loc); |
0d381245 | 6472 | if (b->loc) |
a6d9a66e | 6473 | *last_loc = b->loc; |
3086aeae DJ |
6474 | break; |
6475 | } | |
c906108c | 6476 | |
6c95b8df | 6477 | |
998580f1 | 6478 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6479 | { |
6480 | struct inferior *inf; | |
998580f1 MK |
6481 | VEC(int) *inf_num = NULL; |
6482 | int mi_only = 1; | |
6c95b8df | 6483 | |
998580f1 | 6484 | ALL_INFERIORS (inf) |
6c95b8df PA |
6485 | { |
6486 | if (inf->pspace == loc->pspace) | |
998580f1 | 6487 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6488 | } |
998580f1 MK |
6489 | |
6490 | /* For backward compatibility, don't display inferiors in CLI unless | |
6491 | there are several. Always display for MI. */ | |
6492 | if (allflag | |
6493 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6494 | && (number_of_program_spaces () > 1 | |
6495 | || number_of_inferiors () > 1) | |
6496 | /* LOC is for existing B, it cannot be in | |
6497 | moribund_locations and thus having NULL OWNER. */ | |
6498 | && loc->owner->type != bp_catchpoint)) | |
6499 | mi_only = 0; | |
6500 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6501 | VEC_free (int, inf_num); | |
6c95b8df PA |
6502 | } |
6503 | ||
4a306c9a | 6504 | if (!part_of_multiple) |
c4093a6a | 6505 | { |
4a306c9a JB |
6506 | if (b->thread != -1) |
6507 | { | |
6508 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6509 | "stop only in" line a little further down. */ |
4a306c9a JB |
6510 | ui_out_text (uiout, " thread "); |
6511 | ui_out_field_int (uiout, "thread", b->thread); | |
6512 | } | |
6513 | else if (b->task != 0) | |
6514 | { | |
6515 | ui_out_text (uiout, " task "); | |
6516 | ui_out_field_int (uiout, "task", b->task); | |
6517 | } | |
c4093a6a | 6518 | } |
f1310107 | 6519 | |
8b93c638 | 6520 | ui_out_text (uiout, "\n"); |
f1310107 | 6521 | |
348d480f | 6522 | if (!part_of_multiple) |
f1310107 TJB |
6523 | b->ops->print_one_detail (b, uiout); |
6524 | ||
0d381245 | 6525 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6526 | { |
6527 | annotate_field (6); | |
8b93c638 | 6528 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6529 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6530 | the frame ID. */ |
5af949e3 UW |
6531 | ui_out_field_core_addr (uiout, "frame", |
6532 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6533 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6534 | } |
6535 | ||
28010a5d | 6536 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6537 | { |
6538 | annotate_field (7); | |
d77f58be | 6539 | if (is_tracepoint (b)) |
1042e4c0 SS |
6540 | ui_out_text (uiout, "\ttrace only if "); |
6541 | else | |
6542 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6543 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6544 | |
6545 | /* Print whether the target is doing the breakpoint's condition | |
6546 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6547 | if (is_breakpoint (b) | |
6548 | && breakpoint_condition_evaluation_mode () | |
6549 | == condition_evaluation_target) | |
6550 | { | |
6551 | ui_out_text (uiout, " ("); | |
6552 | ui_out_field_string (uiout, "evaluated-by", | |
6553 | bp_condition_evaluator (b)); | |
6554 | ui_out_text (uiout, " evals)"); | |
6555 | } | |
0101ce28 JJ |
6556 | ui_out_text (uiout, "\n"); |
6557 | } | |
6558 | ||
0d381245 | 6559 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6560 | { |
4a64f543 | 6561 | /* FIXME should make an annotation for this. */ |
8b93c638 | 6562 | ui_out_text (uiout, "\tstop only in thread "); |
5d5658a1 PA |
6563 | if (ui_out_is_mi_like_p (uiout)) |
6564 | ui_out_field_int (uiout, "thread", b->thread); | |
6565 | else | |
6566 | { | |
6567 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6568 | ||
6569 | ui_out_field_string (uiout, "thread", print_thread_id (thr)); | |
6570 | } | |
8b93c638 | 6571 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6572 | } |
6573 | ||
556ec64d YQ |
6574 | if (!part_of_multiple) |
6575 | { | |
6576 | if (b->hit_count) | |
31f56a27 YQ |
6577 | { |
6578 | /* FIXME should make an annotation for this. */ | |
6579 | if (is_catchpoint (b)) | |
6580 | ui_out_text (uiout, "\tcatchpoint"); | |
6581 | else if (is_tracepoint (b)) | |
6582 | ui_out_text (uiout, "\ttracepoint"); | |
6583 | else | |
6584 | ui_out_text (uiout, "\tbreakpoint"); | |
6585 | ui_out_text (uiout, " already hit "); | |
6586 | ui_out_field_int (uiout, "times", b->hit_count); | |
6587 | if (b->hit_count == 1) | |
6588 | ui_out_text (uiout, " time\n"); | |
6589 | else | |
6590 | ui_out_text (uiout, " times\n"); | |
6591 | } | |
556ec64d YQ |
6592 | else |
6593 | { | |
31f56a27 YQ |
6594 | /* Output the count also if it is zero, but only if this is mi. */ |
6595 | if (ui_out_is_mi_like_p (uiout)) | |
6596 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6597 | } |
6598 | } | |
8b93c638 | 6599 | |
0d381245 | 6600 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6601 | { |
6602 | annotate_field (8); | |
8b93c638 JM |
6603 | ui_out_text (uiout, "\tignore next "); |
6604 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6605 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6606 | } |
059fb39f | 6607 | |
816338b5 SS |
6608 | /* Note that an enable count of 1 corresponds to "enable once" |
6609 | behavior, which is reported by the combination of enablement and | |
6610 | disposition, so we don't need to mention it here. */ | |
6611 | if (!part_of_multiple && b->enable_count > 1) | |
6612 | { | |
6613 | annotate_field (8); | |
6614 | ui_out_text (uiout, "\tdisable after "); | |
6615 | /* Tweak the wording to clarify that ignore and enable counts | |
6616 | are distinct, and have additive effect. */ | |
6617 | if (b->ignore_count) | |
6618 | ui_out_text (uiout, "additional "); | |
6619 | else | |
6620 | ui_out_text (uiout, "next "); | |
6621 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6622 | ui_out_text (uiout, " hits\n"); | |
6623 | } | |
6624 | ||
f196051f SS |
6625 | if (!part_of_multiple && is_tracepoint (b)) |
6626 | { | |
6627 | struct tracepoint *tp = (struct tracepoint *) b; | |
6628 | ||
6629 | if (tp->traceframe_usage) | |
6630 | { | |
6631 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6632 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6633 | ui_out_text (uiout, " bytes\n"); | |
6634 | } | |
6635 | } | |
d3ce09f5 | 6636 | |
9add0f1b | 6637 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6638 | if (!part_of_multiple && l) |
c4093a6a | 6639 | { |
3b31d625 EZ |
6640 | struct cleanup *script_chain; |
6641 | ||
c4093a6a | 6642 | annotate_field (9); |
3b31d625 | 6643 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6644 | print_command_lines (uiout, l, 4); |
3b31d625 | 6645 | do_cleanups (script_chain); |
c4093a6a | 6646 | } |
d24317b4 | 6647 | |
d9b3f62e | 6648 | if (is_tracepoint (b)) |
1042e4c0 | 6649 | { |
d9b3f62e PA |
6650 | struct tracepoint *t = (struct tracepoint *) b; |
6651 | ||
6652 | if (!part_of_multiple && t->pass_count) | |
6653 | { | |
6654 | annotate_field (10); | |
6655 | ui_out_text (uiout, "\tpass count "); | |
6656 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6657 | ui_out_text (uiout, " \n"); | |
6658 | } | |
f2a8bc8a YQ |
6659 | |
6660 | /* Don't display it when tracepoint or tracepoint location is | |
6661 | pending. */ | |
6662 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6663 | { | |
6664 | annotate_field (11); | |
6665 | ||
6666 | if (ui_out_is_mi_like_p (uiout)) | |
6667 | ui_out_field_string (uiout, "installed", | |
6668 | loc->inserted ? "y" : "n"); | |
6669 | else | |
6670 | { | |
6671 | if (loc->inserted) | |
6672 | ui_out_text (uiout, "\t"); | |
6673 | else | |
6674 | ui_out_text (uiout, "\tnot "); | |
6675 | ui_out_text (uiout, "installed on target\n"); | |
6676 | } | |
6677 | } | |
1042e4c0 SS |
6678 | } |
6679 | ||
d24317b4 VP |
6680 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6681 | { | |
3a5c3e22 PA |
6682 | if (is_watchpoint (b)) |
6683 | { | |
6684 | struct watchpoint *w = (struct watchpoint *) b; | |
6685 | ||
6686 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6687 | } | |
f00aae0f KS |
6688 | else if (b->location != NULL |
6689 | && event_location_to_string (b->location) != NULL) | |
6690 | ui_out_field_string (uiout, "original-location", | |
6691 | event_location_to_string (b->location)); | |
d24317b4 | 6692 | } |
c4093a6a | 6693 | } |
c5aa993b | 6694 | |
0d381245 VP |
6695 | static void |
6696 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6697 | struct bp_location **last_loc, |
6c95b8df | 6698 | int allflag) |
0d381245 | 6699 | { |
8d3788bd | 6700 | struct cleanup *bkpt_chain; |
79a45e25 | 6701 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6702 | |
6703 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6704 | ||
12c5a436 | 6705 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6706 | do_cleanups (bkpt_chain); |
0d381245 VP |
6707 | |
6708 | /* If this breakpoint has custom print function, | |
6709 | it's already printed. Otherwise, print individual | |
6710 | locations, if any. */ | |
6711 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6712 | { | |
4a64f543 MS |
6713 | /* If breakpoint has a single location that is disabled, we |
6714 | print it as if it had several locations, since otherwise it's | |
6715 | hard to represent "breakpoint enabled, location disabled" | |
6716 | situation. | |
6717 | ||
6718 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6719 | internally, that's not a property exposed to user. */ |
0d381245 | 6720 | if (b->loc |
a5606eee | 6721 | && !is_hardware_watchpoint (b) |
8d3788bd | 6722 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6723 | { |
6724 | struct bp_location *loc; | |
6725 | int n = 1; | |
8d3788bd | 6726 | |
0d381245 | 6727 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6728 | { |
6729 | struct cleanup *inner2 = | |
6730 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6731 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6732 | do_cleanups (inner2); | |
6733 | } | |
0d381245 VP |
6734 | } |
6735 | } | |
6736 | } | |
6737 | ||
a6d9a66e UW |
6738 | static int |
6739 | breakpoint_address_bits (struct breakpoint *b) | |
6740 | { | |
6741 | int print_address_bits = 0; | |
6742 | struct bp_location *loc; | |
6743 | ||
c6d81124 PA |
6744 | /* Software watchpoints that aren't watching memory don't have an |
6745 | address to print. */ | |
6746 | if (is_no_memory_software_watchpoint (b)) | |
6747 | return 0; | |
6748 | ||
a6d9a66e UW |
6749 | for (loc = b->loc; loc; loc = loc->next) |
6750 | { | |
c7437ca6 PA |
6751 | int addr_bit; |
6752 | ||
c7437ca6 | 6753 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6754 | if (addr_bit > print_address_bits) |
6755 | print_address_bits = addr_bit; | |
6756 | } | |
6757 | ||
6758 | return print_address_bits; | |
6759 | } | |
0d381245 | 6760 | |
c4093a6a JM |
6761 | struct captured_breakpoint_query_args |
6762 | { | |
6763 | int bnum; | |
6764 | }; | |
c5aa993b | 6765 | |
c4093a6a | 6766 | static int |
2b65245e | 6767 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a | 6768 | { |
9a3c8263 SM |
6769 | struct captured_breakpoint_query_args *args |
6770 | = (struct captured_breakpoint_query_args *) data; | |
52f0bd74 | 6771 | struct breakpoint *b; |
a6d9a66e | 6772 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6773 | |
c4093a6a JM |
6774 | ALL_BREAKPOINTS (b) |
6775 | { | |
6776 | if (args->bnum == b->number) | |
c5aa993b | 6777 | { |
12c5a436 | 6778 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6779 | return GDB_RC_OK; |
c5aa993b | 6780 | } |
c4093a6a JM |
6781 | } |
6782 | return GDB_RC_NONE; | |
6783 | } | |
c5aa993b | 6784 | |
c4093a6a | 6785 | enum gdb_rc |
4a64f543 MS |
6786 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6787 | char **error_message) | |
c4093a6a JM |
6788 | { |
6789 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6790 | |
c4093a6a JM |
6791 | args.bnum = bnum; |
6792 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6793 | an error. */ |
b0b13bb4 DJ |
6794 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6795 | error_message, RETURN_MASK_ALL) < 0) | |
6796 | return GDB_RC_FAIL; | |
6797 | else | |
6798 | return GDB_RC_OK; | |
c4093a6a | 6799 | } |
c5aa993b | 6800 | |
09d682a4 TT |
6801 | /* Return true if this breakpoint was set by the user, false if it is |
6802 | internal or momentary. */ | |
6803 | ||
6804 | int | |
6805 | user_breakpoint_p (struct breakpoint *b) | |
6806 | { | |
46c6471b | 6807 | return b->number > 0; |
09d682a4 TT |
6808 | } |
6809 | ||
93daf339 TT |
6810 | /* See breakpoint.h. */ |
6811 | ||
6812 | int | |
6813 | pending_breakpoint_p (struct breakpoint *b) | |
6814 | { | |
6815 | return b->loc == NULL; | |
6816 | } | |
6817 | ||
7f3b0473 | 6818 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6819 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6820 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6821 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6822 | ones for which it returns non-zero. Return the total number of | |
6823 | breakpoints listed. */ | |
c906108c | 6824 | |
d77f58be | 6825 | static int |
e5a67952 | 6826 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6827 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6828 | { |
52f0bd74 | 6829 | struct breakpoint *b; |
a6d9a66e | 6830 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6831 | int nr_printable_breakpoints; |
3b31d625 | 6832 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6833 | struct value_print_options opts; |
a6d9a66e | 6834 | int print_address_bits = 0; |
269b11a2 | 6835 | int print_type_col_width = 14; |
79a45e25 | 6836 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6837 | |
79a45b7d TT |
6838 | get_user_print_options (&opts); |
6839 | ||
4a64f543 MS |
6840 | /* Compute the number of rows in the table, as well as the size |
6841 | required for address fields. */ | |
7f3b0473 AC |
6842 | nr_printable_breakpoints = 0; |
6843 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6844 | { |
6845 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6846 | if (filter && !filter (b)) | |
6847 | continue; | |
6848 | ||
6849 | /* If we have an "args" string, it is a list of breakpoints to | |
6850 | accept. Skip the others. */ | |
6851 | if (args != NULL && *args != '\0') | |
6852 | { | |
6853 | if (allflag && parse_and_eval_long (args) != b->number) | |
6854 | continue; | |
6855 | if (!allflag && !number_is_in_list (args, b->number)) | |
6856 | continue; | |
6857 | } | |
269b11a2 | 6858 | |
e5a67952 MS |
6859 | if (allflag || user_breakpoint_p (b)) |
6860 | { | |
6861 | int addr_bit, type_len; | |
a6d9a66e | 6862 | |
e5a67952 MS |
6863 | addr_bit = breakpoint_address_bits (b); |
6864 | if (addr_bit > print_address_bits) | |
6865 | print_address_bits = addr_bit; | |
269b11a2 | 6866 | |
e5a67952 MS |
6867 | type_len = strlen (bptype_string (b->type)); |
6868 | if (type_len > print_type_col_width) | |
6869 | print_type_col_width = type_len; | |
6870 | ||
6871 | nr_printable_breakpoints++; | |
6872 | } | |
6873 | } | |
7f3b0473 | 6874 | |
79a45b7d | 6875 | if (opts.addressprint) |
3b31d625 | 6876 | bkpttbl_chain |
3e43a32a MS |
6877 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6878 | nr_printable_breakpoints, | |
3b31d625 | 6879 | "BreakpointTable"); |
8b93c638 | 6880 | else |
3b31d625 | 6881 | bkpttbl_chain |
3e43a32a MS |
6882 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6883 | nr_printable_breakpoints, | |
3b31d625 | 6884 | "BreakpointTable"); |
8b93c638 | 6885 | |
7f3b0473 | 6886 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6887 | annotate_breakpoints_headers (); |
6888 | if (nr_printable_breakpoints > 0) | |
6889 | annotate_field (0); | |
4a64f543 | 6890 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6891 | if (nr_printable_breakpoints > 0) |
6892 | annotate_field (1); | |
269b11a2 | 6893 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6894 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6895 | if (nr_printable_breakpoints > 0) |
6896 | annotate_field (2); | |
4a64f543 | 6897 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6898 | if (nr_printable_breakpoints > 0) |
6899 | annotate_field (3); | |
54e52265 | 6900 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6901 | if (opts.addressprint) |
e5a67952 MS |
6902 | { |
6903 | if (nr_printable_breakpoints > 0) | |
6904 | annotate_field (4); | |
6905 | if (print_address_bits <= 32) | |
6906 | ui_out_table_header (uiout, 10, ui_left, | |
6907 | "addr", "Address"); /* 5 */ | |
6908 | else | |
6909 | ui_out_table_header (uiout, 18, ui_left, | |
6910 | "addr", "Address"); /* 5 */ | |
6911 | } | |
d7faa9e7 AC |
6912 | if (nr_printable_breakpoints > 0) |
6913 | annotate_field (5); | |
6914 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6915 | ui_out_table_body (uiout); | |
6916 | if (nr_printable_breakpoints > 0) | |
6917 | annotate_breakpoints_table (); | |
7f3b0473 | 6918 | |
c4093a6a | 6919 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6920 | { |
6921 | QUIT; | |
6922 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6923 | if (filter && !filter (b)) | |
6924 | continue; | |
6925 | ||
6926 | /* If we have an "args" string, it is a list of breakpoints to | |
6927 | accept. Skip the others. */ | |
6928 | ||
6929 | if (args != NULL && *args != '\0') | |
6930 | { | |
6931 | if (allflag) /* maintenance info breakpoint */ | |
6932 | { | |
6933 | if (parse_and_eval_long (args) != b->number) | |
6934 | continue; | |
6935 | } | |
6936 | else /* all others */ | |
6937 | { | |
6938 | if (!number_is_in_list (args, b->number)) | |
6939 | continue; | |
6940 | } | |
6941 | } | |
6942 | /* We only print out user settable breakpoints unless the | |
6943 | allflag is set. */ | |
6944 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6945 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6946 | } |
6947 | ||
3b31d625 | 6948 | do_cleanups (bkpttbl_chain); |
698384cd | 6949 | |
7f3b0473 | 6950 | if (nr_printable_breakpoints == 0) |
c906108c | 6951 | { |
4a64f543 MS |
6952 | /* If there's a filter, let the caller decide how to report |
6953 | empty list. */ | |
d77f58be SS |
6954 | if (!filter) |
6955 | { | |
e5a67952 | 6956 | if (args == NULL || *args == '\0') |
d77f58be SS |
6957 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6958 | else | |
4a64f543 | 6959 | ui_out_message (uiout, 0, |
e5a67952 MS |
6960 | "No breakpoint or watchpoint matching '%s'.\n", |
6961 | args); | |
d77f58be | 6962 | } |
c906108c SS |
6963 | } |
6964 | else | |
c4093a6a | 6965 | { |
a6d9a66e UW |
6966 | if (last_loc && !server_command) |
6967 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6968 | } |
c906108c | 6969 | |
4a64f543 | 6970 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6971 | there have been breakpoints? */ |
c906108c | 6972 | annotate_breakpoints_table_end (); |
d77f58be SS |
6973 | |
6974 | return nr_printable_breakpoints; | |
c906108c SS |
6975 | } |
6976 | ||
ad443146 SS |
6977 | /* Display the value of default-collect in a way that is generally |
6978 | compatible with the breakpoint list. */ | |
6979 | ||
6980 | static void | |
6981 | default_collect_info (void) | |
6982 | { | |
79a45e25 PA |
6983 | struct ui_out *uiout = current_uiout; |
6984 | ||
ad443146 SS |
6985 | /* If it has no value (which is frequently the case), say nothing; a |
6986 | message like "No default-collect." gets in user's face when it's | |
6987 | not wanted. */ | |
6988 | if (!*default_collect) | |
6989 | return; | |
6990 | ||
6991 | /* The following phrase lines up nicely with per-tracepoint collect | |
6992 | actions. */ | |
6993 | ui_out_text (uiout, "default collect "); | |
6994 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6995 | ui_out_text (uiout, " \n"); | |
6996 | } | |
6997 | ||
c906108c | 6998 | static void |
e5a67952 | 6999 | breakpoints_info (char *args, int from_tty) |
c906108c | 7000 | { |
e5a67952 | 7001 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
7002 | |
7003 | default_collect_info (); | |
d77f58be SS |
7004 | } |
7005 | ||
7006 | static void | |
e5a67952 | 7007 | watchpoints_info (char *args, int from_tty) |
d77f58be | 7008 | { |
e5a67952 | 7009 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 7010 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
7011 | |
7012 | if (num_printed == 0) | |
7013 | { | |
e5a67952 | 7014 | if (args == NULL || *args == '\0') |
d77f58be SS |
7015 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
7016 | else | |
e5a67952 | 7017 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 7018 | } |
c906108c SS |
7019 | } |
7020 | ||
7a292a7a | 7021 | static void |
e5a67952 | 7022 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 7023 | { |
e5a67952 | 7024 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
7025 | |
7026 | default_collect_info (); | |
c906108c SS |
7027 | } |
7028 | ||
0d381245 | 7029 | static int |
714835d5 | 7030 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 7031 | struct program_space *pspace, |
714835d5 | 7032 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
7033 | { |
7034 | struct bp_location *bl = b->loc; | |
cc59ec59 | 7035 | |
0d381245 VP |
7036 | for (; bl; bl = bl->next) |
7037 | { | |
6c95b8df PA |
7038 | if (bl->pspace == pspace |
7039 | && bl->address == pc | |
0d381245 VP |
7040 | && (!overlay_debugging || bl->section == section)) |
7041 | return 1; | |
7042 | } | |
7043 | return 0; | |
7044 | } | |
7045 | ||
672f9b60 | 7046 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
7047 | concerns with logical breakpoints, so we match program spaces, not |
7048 | address spaces. */ | |
c906108c SS |
7049 | |
7050 | static void | |
6c95b8df PA |
7051 | describe_other_breakpoints (struct gdbarch *gdbarch, |
7052 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 7053 | struct obj_section *section, int thread) |
c906108c | 7054 | { |
52f0bd74 AC |
7055 | int others = 0; |
7056 | struct breakpoint *b; | |
c906108c SS |
7057 | |
7058 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
7059 | others += (user_breakpoint_p (b) |
7060 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
7061 | if (others > 0) |
7062 | { | |
a3f17187 AC |
7063 | if (others == 1) |
7064 | printf_filtered (_("Note: breakpoint ")); | |
7065 | else /* if (others == ???) */ | |
7066 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 7067 | ALL_BREAKPOINTS (b) |
672f9b60 | 7068 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
7069 | { |
7070 | others--; | |
7071 | printf_filtered ("%d", b->number); | |
7072 | if (b->thread == -1 && thread != -1) | |
7073 | printf_filtered (" (all threads)"); | |
7074 | else if (b->thread != -1) | |
7075 | printf_filtered (" (thread %d)", b->thread); | |
7076 | printf_filtered ("%s%s ", | |
059fb39f | 7077 | ((b->enable_state == bp_disabled |
f8eba3c6 | 7078 | || b->enable_state == bp_call_disabled) |
0d381245 | 7079 | ? " (disabled)" |
0d381245 VP |
7080 | : ""), |
7081 | (others > 1) ? "," | |
7082 | : ((others == 1) ? " and" : "")); | |
7083 | } | |
a3f17187 | 7084 | printf_filtered (_("also set at pc ")); |
5af949e3 | 7085 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
7086 | printf_filtered (".\n"); |
7087 | } | |
7088 | } | |
7089 | \f | |
c906108c | 7090 | |
e4f237da | 7091 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
7092 | BPT locations. For some breakpoint types, the locations' address members |
7093 | are irrelevant and it makes no sense to attempt to compare them to other | |
7094 | addresses (or use them for any other purpose either). | |
e4f237da | 7095 | |
4a64f543 | 7096 | More specifically, each of the following breakpoint types will |
244558af | 7097 | always have a zero valued location address and we don't want to mark |
4a64f543 | 7098 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 7099 | breakpoint location at address zero: |
e4f237da KB |
7100 | |
7101 | bp_watchpoint | |
2d134ed3 PA |
7102 | bp_catchpoint |
7103 | ||
7104 | */ | |
e4f237da KB |
7105 | |
7106 | static int | |
7107 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
7108 | { | |
7109 | enum bptype type = bpt->type; | |
7110 | ||
2d134ed3 PA |
7111 | return (type != bp_watchpoint && type != bp_catchpoint); |
7112 | } | |
7113 | ||
7114 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
7115 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
7116 | ||
7117 | static int | |
4a64f543 MS |
7118 | watchpoint_locations_match (struct bp_location *loc1, |
7119 | struct bp_location *loc2) | |
2d134ed3 | 7120 | { |
3a5c3e22 PA |
7121 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
7122 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
7123 | ||
7124 | /* Both of them must exist. */ | |
7125 | gdb_assert (w1 != NULL); | |
7126 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 7127 | |
4a64f543 MS |
7128 | /* If the target can evaluate the condition expression in hardware, |
7129 | then we we need to insert both watchpoints even if they are at | |
7130 | the same place. Otherwise the watchpoint will only trigger when | |
7131 | the condition of whichever watchpoint was inserted evaluates to | |
7132 | true, not giving a chance for GDB to check the condition of the | |
7133 | other watchpoint. */ | |
3a5c3e22 | 7134 | if ((w1->cond_exp |
4a64f543 MS |
7135 | && target_can_accel_watchpoint_condition (loc1->address, |
7136 | loc1->length, | |
0cf6dd15 | 7137 | loc1->watchpoint_type, |
4d01a485 | 7138 | w1->cond_exp.get ())) |
3a5c3e22 | 7139 | || (w2->cond_exp |
4a64f543 MS |
7140 | && target_can_accel_watchpoint_condition (loc2->address, |
7141 | loc2->length, | |
0cf6dd15 | 7142 | loc2->watchpoint_type, |
4d01a485 | 7143 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
7144 | return 0; |
7145 | ||
85d721b8 PA |
7146 | /* Note that this checks the owner's type, not the location's. In |
7147 | case the target does not support read watchpoints, but does | |
7148 | support access watchpoints, we'll have bp_read_watchpoint | |
7149 | watchpoints with hw_access locations. Those should be considered | |
7150 | duplicates of hw_read locations. The hw_read locations will | |
7151 | become hw_access locations later. */ | |
2d134ed3 PA |
7152 | return (loc1->owner->type == loc2->owner->type |
7153 | && loc1->pspace->aspace == loc2->pspace->aspace | |
7154 | && loc1->address == loc2->address | |
7155 | && loc1->length == loc2->length); | |
e4f237da KB |
7156 | } |
7157 | ||
31e77af2 | 7158 | /* See breakpoint.h. */ |
6c95b8df | 7159 | |
31e77af2 | 7160 | int |
6c95b8df PA |
7161 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
7162 | struct address_space *aspace2, CORE_ADDR addr2) | |
7163 | { | |
f5656ead | 7164 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
7165 | || aspace1 == aspace2) |
7166 | && addr1 == addr2); | |
7167 | } | |
7168 | ||
f1310107 TJB |
7169 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
7170 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
7171 | matches ASPACE2. On targets that have global breakpoints, the address | |
7172 | space doesn't really matter. */ | |
7173 | ||
7174 | static int | |
7175 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
7176 | int len1, struct address_space *aspace2, | |
7177 | CORE_ADDR addr2) | |
7178 | { | |
f5656ead | 7179 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7180 | || aspace1 == aspace2) |
7181 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7182 | } | |
7183 | ||
7184 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7185 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7186 | matches the breakpoint's address space. On targets that have global | |
7187 | breakpoints, the address space doesn't really matter. */ | |
7188 | ||
7189 | static int | |
7190 | breakpoint_location_address_match (struct bp_location *bl, | |
7191 | struct address_space *aspace, | |
7192 | CORE_ADDR addr) | |
7193 | { | |
7194 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7195 | aspace, addr) | |
7196 | || (bl->length | |
7197 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7198 | bl->address, bl->length, | |
7199 | aspace, addr))); | |
7200 | } | |
7201 | ||
d35ae833 PA |
7202 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
7203 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
7204 | match happens only if ASPACE matches the breakpoint's address | |
7205 | space. On targets that have global breakpoints, the address space | |
7206 | doesn't really matter. */ | |
7207 | ||
7208 | static int | |
7209 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
7210 | struct address_space *aspace, | |
7211 | CORE_ADDR addr, int len) | |
7212 | { | |
7213 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
7214 | || bl->pspace->aspace == aspace) | |
7215 | { | |
7216 | int bl_len = bl->length != 0 ? bl->length : 1; | |
7217 | ||
7218 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
7219 | return 1; | |
7220 | } | |
7221 | return 0; | |
7222 | } | |
7223 | ||
1e4d1764 YQ |
7224 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7225 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7226 | true, otherwise returns false. */ | |
7227 | ||
7228 | static int | |
7229 | tracepoint_locations_match (struct bp_location *loc1, | |
7230 | struct bp_location *loc2) | |
7231 | { | |
7232 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7233 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7234 | locations at the same address of different tracepoints are regarded as | |
7235 | different locations. */ | |
7236 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7237 | else | |
7238 | return 0; | |
7239 | } | |
7240 | ||
2d134ed3 PA |
7241 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
7242 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
7243 | represent the same location. */ | |
7244 | ||
7245 | static int | |
4a64f543 MS |
7246 | breakpoint_locations_match (struct bp_location *loc1, |
7247 | struct bp_location *loc2) | |
2d134ed3 | 7248 | { |
2bdf28a0 JK |
7249 | int hw_point1, hw_point2; |
7250 | ||
7251 | /* Both of them must not be in moribund_locations. */ | |
7252 | gdb_assert (loc1->owner != NULL); | |
7253 | gdb_assert (loc2->owner != NULL); | |
7254 | ||
7255 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7256 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7257 | |
7258 | if (hw_point1 != hw_point2) | |
7259 | return 0; | |
7260 | else if (hw_point1) | |
7261 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7262 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7263 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7264 | else |
f1310107 TJB |
7265 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
7266 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
7267 | loc2->pspace->aspace, loc2->address) | |
7268 | && loc1->length == loc2->length); | |
2d134ed3 PA |
7269 | } |
7270 | ||
76897487 KB |
7271 | static void |
7272 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
7273 | int bnum, int have_bnum) | |
7274 | { | |
f63fbe86 MS |
7275 | /* The longest string possibly returned by hex_string_custom |
7276 | is 50 chars. These must be at least that big for safety. */ | |
7277 | char astr1[64]; | |
7278 | char astr2[64]; | |
76897487 | 7279 | |
bb599908 PH |
7280 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7281 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7282 | if (have_bnum) |
8a3fe4f8 | 7283 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7284 | bnum, astr1, astr2); |
7285 | else | |
8a3fe4f8 | 7286 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7287 | } |
7288 | ||
4a64f543 MS |
7289 | /* Adjust a breakpoint's address to account for architectural |
7290 | constraints on breakpoint placement. Return the adjusted address. | |
7291 | Note: Very few targets require this kind of adjustment. For most | |
7292 | targets, this function is simply the identity function. */ | |
76897487 KB |
7293 | |
7294 | static CORE_ADDR | |
a6d9a66e UW |
7295 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7296 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7297 | { |
a6d9a66e | 7298 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7299 | { |
7300 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7301 | return bpaddr; | |
7302 | } | |
88f7da05 KB |
7303 | else if (bptype == bp_watchpoint |
7304 | || bptype == bp_hardware_watchpoint | |
7305 | || bptype == bp_read_watchpoint | |
7306 | || bptype == bp_access_watchpoint | |
fe798b75 | 7307 | || bptype == bp_catchpoint) |
88f7da05 KB |
7308 | { |
7309 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7310 | have their addresses modified. */ | |
7311 | return bpaddr; | |
7312 | } | |
7c16b83e PA |
7313 | else if (bptype == bp_single_step) |
7314 | { | |
7315 | /* Single-step breakpoints should not have their addresses | |
7316 | modified. If there's any architectural constrain that | |
7317 | applies to this address, then it should have already been | |
7318 | taken into account when the breakpoint was created in the | |
7319 | first place. If we didn't do this, stepping through e.g., | |
7320 | Thumb-2 IT blocks would break. */ | |
7321 | return bpaddr; | |
7322 | } | |
76897487 KB |
7323 | else |
7324 | { | |
7325 | CORE_ADDR adjusted_bpaddr; | |
7326 | ||
7327 | /* Some targets have architectural constraints on the placement | |
7328 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7329 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7330 | |
7331 | /* An adjusted breakpoint address can significantly alter | |
7332 | a user's expectations. Print a warning if an adjustment | |
7333 | is required. */ | |
7334 | if (adjusted_bpaddr != bpaddr) | |
7335 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7336 | ||
7337 | return adjusted_bpaddr; | |
7338 | } | |
7339 | } | |
7340 | ||
28010a5d PA |
7341 | void |
7342 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
7343 | struct breakpoint *owner) | |
7cc221ef | 7344 | { |
7cc221ef DJ |
7345 | memset (loc, 0, sizeof (*loc)); |
7346 | ||
348d480f PA |
7347 | gdb_assert (ops != NULL); |
7348 | ||
28010a5d PA |
7349 | loc->ops = ops; |
7350 | loc->owner = owner; | |
b775012e | 7351 | loc->cond_bytecode = NULL; |
0d381245 VP |
7352 | loc->shlib_disabled = 0; |
7353 | loc->enabled = 1; | |
e049a4b5 | 7354 | |
28010a5d | 7355 | switch (owner->type) |
e049a4b5 DJ |
7356 | { |
7357 | case bp_breakpoint: | |
7c16b83e | 7358 | case bp_single_step: |
e049a4b5 DJ |
7359 | case bp_until: |
7360 | case bp_finish: | |
7361 | case bp_longjmp: | |
7362 | case bp_longjmp_resume: | |
e2e4d78b | 7363 | case bp_longjmp_call_dummy: |
186c406b TT |
7364 | case bp_exception: |
7365 | case bp_exception_resume: | |
e049a4b5 | 7366 | case bp_step_resume: |
2c03e5be | 7367 | case bp_hp_step_resume: |
e049a4b5 DJ |
7368 | case bp_watchpoint_scope: |
7369 | case bp_call_dummy: | |
aa7d318d | 7370 | case bp_std_terminate: |
e049a4b5 DJ |
7371 | case bp_shlib_event: |
7372 | case bp_thread_event: | |
7373 | case bp_overlay_event: | |
4efc6507 | 7374 | case bp_jit_event: |
0fd8e87f | 7375 | case bp_longjmp_master: |
aa7d318d | 7376 | case bp_std_terminate_master: |
186c406b | 7377 | case bp_exception_master: |
0e30163f JK |
7378 | case bp_gnu_ifunc_resolver: |
7379 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7380 | case bp_dprintf: |
e049a4b5 | 7381 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7382 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7383 | break; |
7384 | case bp_hardware_breakpoint: | |
7385 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7386 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7387 | break; |
7388 | case bp_hardware_watchpoint: | |
7389 | case bp_read_watchpoint: | |
7390 | case bp_access_watchpoint: | |
7391 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7392 | break; | |
7393 | case bp_watchpoint: | |
ce78b96d | 7394 | case bp_catchpoint: |
15c3d785 PA |
7395 | case bp_tracepoint: |
7396 | case bp_fast_tracepoint: | |
0fb4aa4b | 7397 | case bp_static_tracepoint: |
e049a4b5 DJ |
7398 | loc->loc_type = bp_loc_other; |
7399 | break; | |
7400 | default: | |
e2e0b3e5 | 7401 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7402 | } |
7403 | ||
f431efe5 | 7404 | loc->refc = 1; |
28010a5d PA |
7405 | } |
7406 | ||
7407 | /* Allocate a struct bp_location. */ | |
7408 | ||
7409 | static struct bp_location * | |
7410 | allocate_bp_location (struct breakpoint *bpt) | |
7411 | { | |
348d480f PA |
7412 | return bpt->ops->allocate_location (bpt); |
7413 | } | |
7cc221ef | 7414 | |
f431efe5 PA |
7415 | static void |
7416 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7417 | { |
348d480f | 7418 | loc->ops->dtor (loc); |
4d01a485 | 7419 | delete loc; |
fe3f5fa8 VP |
7420 | } |
7421 | ||
f431efe5 PA |
7422 | /* Increment reference count. */ |
7423 | ||
7424 | static void | |
7425 | incref_bp_location (struct bp_location *bl) | |
7426 | { | |
7427 | ++bl->refc; | |
7428 | } | |
7429 | ||
7430 | /* Decrement reference count. If the reference count reaches 0, | |
7431 | destroy the bp_location. Sets *BLP to NULL. */ | |
7432 | ||
7433 | static void | |
7434 | decref_bp_location (struct bp_location **blp) | |
7435 | { | |
0807b50c PA |
7436 | gdb_assert ((*blp)->refc > 0); |
7437 | ||
f431efe5 PA |
7438 | if (--(*blp)->refc == 0) |
7439 | free_bp_location (*blp); | |
7440 | *blp = NULL; | |
7441 | } | |
7442 | ||
346774a9 | 7443 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7444 | |
346774a9 PA |
7445 | static void |
7446 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 7447 | { |
346774a9 | 7448 | struct breakpoint *b1; |
c906108c | 7449 | |
346774a9 PA |
7450 | /* Add this breakpoint to the end of the chain so that a list of |
7451 | breakpoints will come out in order of increasing numbers. */ | |
7452 | ||
7453 | b1 = breakpoint_chain; | |
7454 | if (b1 == 0) | |
7455 | breakpoint_chain = b; | |
7456 | else | |
7457 | { | |
7458 | while (b1->next) | |
7459 | b1 = b1->next; | |
7460 | b1->next = b; | |
7461 | } | |
7462 | } | |
7463 | ||
7464 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7465 | ||
7466 | static void | |
7467 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7468 | struct gdbarch *gdbarch, | |
28010a5d | 7469 | enum bptype bptype, |
c0a91b2b | 7470 | const struct breakpoint_ops *ops) |
346774a9 | 7471 | { |
c906108c | 7472 | memset (b, 0, sizeof (*b)); |
2219d63c | 7473 | |
348d480f PA |
7474 | gdb_assert (ops != NULL); |
7475 | ||
28010a5d | 7476 | b->ops = ops; |
4d28f7a8 | 7477 | b->type = bptype; |
a6d9a66e | 7478 | b->gdbarch = gdbarch; |
c906108c SS |
7479 | b->language = current_language->la_language; |
7480 | b->input_radix = input_radix; | |
7481 | b->thread = -1; | |
b5de0fa7 | 7482 | b->enable_state = bp_enabled; |
c906108c SS |
7483 | b->next = 0; |
7484 | b->silent = 0; | |
7485 | b->ignore_count = 0; | |
7486 | b->commands = NULL; | |
818dd999 | 7487 | b->frame_id = null_frame_id; |
0d381245 | 7488 | b->condition_not_parsed = 0; |
84f4c1fe | 7489 | b->py_bp_object = NULL; |
d0fb5eae | 7490 | b->related_breakpoint = b; |
f00aae0f | 7491 | b->location = NULL; |
346774a9 PA |
7492 | } |
7493 | ||
7494 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7495 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7496 | |
7497 | static struct breakpoint * | |
7498 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7499 | enum bptype bptype, |
c0a91b2b | 7500 | const struct breakpoint_ops *ops) |
346774a9 | 7501 | { |
4d01a485 | 7502 | struct breakpoint *b = new breakpoint (); |
346774a9 | 7503 | |
348d480f | 7504 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 7505 | add_to_breakpoint_chain (b); |
0d381245 VP |
7506 | return b; |
7507 | } | |
7508 | ||
0e30163f JK |
7509 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7510 | resolutions should be made as the user specified the location explicitly | |
7511 | enough. */ | |
7512 | ||
0d381245 | 7513 | static void |
0e30163f | 7514 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7515 | { |
2bdf28a0 JK |
7516 | gdb_assert (loc->owner != NULL); |
7517 | ||
0d381245 | 7518 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7519 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7520 | || is_tracepoint (loc->owner)) |
0d381245 | 7521 | { |
0e30163f | 7522 | int is_gnu_ifunc; |
2c02bd72 | 7523 | const char *function_name; |
6a3a010b | 7524 | CORE_ADDR func_addr; |
0e30163f | 7525 | |
2c02bd72 | 7526 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7527 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7528 | |
7529 | if (is_gnu_ifunc && !explicit_loc) | |
7530 | { | |
7531 | struct breakpoint *b = loc->owner; | |
7532 | ||
7533 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7534 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7535 | &loc->requested_address)) |
7536 | { | |
7537 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7538 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7539 | loc->requested_address, | |
7540 | b->type); | |
7541 | } | |
7542 | else if (b->type == bp_breakpoint && b->loc == loc | |
7543 | && loc->next == NULL && b->related_breakpoint == b) | |
7544 | { | |
7545 | /* Create only the whole new breakpoint of this type but do not | |
7546 | mess more complicated breakpoints with multiple locations. */ | |
7547 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7548 | /* Remember the resolver's address for use by the return |
7549 | breakpoint. */ | |
7550 | loc->related_address = func_addr; | |
0e30163f JK |
7551 | } |
7552 | } | |
7553 | ||
2c02bd72 DE |
7554 | if (function_name) |
7555 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7556 | } |
7557 | } | |
7558 | ||
a6d9a66e | 7559 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7560 | struct gdbarch * |
a6d9a66e UW |
7561 | get_sal_arch (struct symtab_and_line sal) |
7562 | { | |
7563 | if (sal.section) | |
7564 | return get_objfile_arch (sal.section->objfile); | |
7565 | if (sal.symtab) | |
eb822aa6 | 7566 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7567 | |
7568 | return NULL; | |
7569 | } | |
7570 | ||
346774a9 PA |
7571 | /* Low level routine for partially initializing a breakpoint of type |
7572 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7573 | file name, and line number are provided by SAL. |
0d381245 VP |
7574 | |
7575 | It is expected that the caller will complete the initialization of | |
7576 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7577 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7578 | |
346774a9 PA |
7579 | static void |
7580 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7581 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7582 | const struct breakpoint_ops *ops) |
0d381245 | 7583 | { |
28010a5d | 7584 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7585 | |
3742cc8b | 7586 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7587 | |
6c95b8df PA |
7588 | if (bptype != bp_catchpoint) |
7589 | gdb_assert (sal.pspace != NULL); | |
7590 | ||
f8eba3c6 TT |
7591 | /* Store the program space that was used to set the breakpoint, |
7592 | except for ordinary breakpoints, which are independent of the | |
7593 | program space. */ | |
7594 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7595 | b->pspace = sal.pspace; | |
346774a9 | 7596 | } |
c906108c | 7597 | |
346774a9 PA |
7598 | /* set_raw_breakpoint is a low level routine for allocating and |
7599 | partially initializing a breakpoint of type BPTYPE. The newly | |
7600 | created breakpoint's address, section, source file name, and line | |
7601 | number are provided by SAL. The newly created and partially | |
7602 | initialized breakpoint is added to the breakpoint chain and | |
7603 | is also returned as the value of this function. | |
7604 | ||
7605 | It is expected that the caller will complete the initialization of | |
7606 | the newly created breakpoint struct as well as output any status | |
7607 | information regarding the creation of a new breakpoint. In | |
7608 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7609 | number! Care should be taken to not allow an error to occur | |
7610 | prior to completing the initialization of the breakpoint. If this | |
7611 | should happen, a bogus breakpoint will be left on the chain. */ | |
7612 | ||
7613 | struct breakpoint * | |
7614 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7615 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7616 | const struct breakpoint_ops *ops) |
346774a9 | 7617 | { |
4d01a485 | 7618 | struct breakpoint *b = new breakpoint (); |
346774a9 | 7619 | |
348d480f | 7620 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7621 | add_to_breakpoint_chain (b); |
c906108c SS |
7622 | return b; |
7623 | } | |
7624 | ||
53a5351d | 7625 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7626 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7627 | initiated the operation. */ | |
c906108c SS |
7628 | |
7629 | void | |
186c406b | 7630 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7631 | { |
35df4500 | 7632 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7633 | int thread = tp->global_num; |
0fd8e87f UW |
7634 | |
7635 | /* To avoid having to rescan all objfile symbols at every step, | |
7636 | we maintain a list of continually-inserted but always disabled | |
7637 | longjmp "master" breakpoints. Here, we simply create momentary | |
7638 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7639 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7640 | if (b->pspace == current_program_space |
186c406b TT |
7641 | && (b->type == bp_longjmp_master |
7642 | || b->type == bp_exception_master)) | |
0fd8e87f | 7643 | { |
06edf0c0 PA |
7644 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7645 | struct breakpoint *clone; | |
cc59ec59 | 7646 | |
e2e4d78b JK |
7647 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7648 | after their removal. */ | |
06edf0c0 | 7649 | clone = momentary_breakpoint_from_master (b, type, |
a1aa2221 | 7650 | &longjmp_breakpoint_ops, 1); |
0fd8e87f UW |
7651 | clone->thread = thread; |
7652 | } | |
186c406b TT |
7653 | |
7654 | tp->initiating_frame = frame; | |
c906108c SS |
7655 | } |
7656 | ||
611c83ae | 7657 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7658 | void |
611c83ae | 7659 | delete_longjmp_breakpoint (int thread) |
c906108c | 7660 | { |
35df4500 | 7661 | struct breakpoint *b, *b_tmp; |
c906108c | 7662 | |
35df4500 | 7663 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7664 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7665 | { |
7666 | if (b->thread == thread) | |
7667 | delete_breakpoint (b); | |
7668 | } | |
c906108c SS |
7669 | } |
7670 | ||
f59f708a PA |
7671 | void |
7672 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7673 | { | |
7674 | struct breakpoint *b, *b_tmp; | |
7675 | ||
7676 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7677 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7678 | { | |
7679 | if (b->thread == thread) | |
7680 | b->disposition = disp_del_at_next_stop; | |
7681 | } | |
7682 | } | |
7683 | ||
e2e4d78b JK |
7684 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7685 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7686 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7687 | breakpoints. */ | |
7688 | ||
7689 | struct breakpoint * | |
7690 | set_longjmp_breakpoint_for_call_dummy (void) | |
7691 | { | |
7692 | struct breakpoint *b, *retval = NULL; | |
7693 | ||
7694 | ALL_BREAKPOINTS (b) | |
7695 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7696 | { | |
7697 | struct breakpoint *new_b; | |
7698 | ||
7699 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7700 | &momentary_breakpoint_ops, |
7701 | 1); | |
5d5658a1 | 7702 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7703 | |
7704 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7705 | ||
7706 | gdb_assert (new_b->related_breakpoint == new_b); | |
7707 | if (retval == NULL) | |
7708 | retval = new_b; | |
7709 | new_b->related_breakpoint = retval; | |
7710 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7711 | retval = retval->related_breakpoint; | |
7712 | retval->related_breakpoint = new_b; | |
7713 | } | |
7714 | ||
7715 | return retval; | |
7716 | } | |
7717 | ||
7718 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7719 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7720 | stack. |
7721 | ||
7722 | You should call this function only at places where it is safe to currently | |
7723 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7724 | frames. */ | |
7725 | ||
7726 | void | |
b67a2c6f | 7727 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7728 | { |
7729 | struct breakpoint *b, *b_tmp; | |
7730 | ||
7731 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7732 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7733 | { |
7734 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7735 | ||
7736 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7737 | dummy_b = dummy_b->related_breakpoint; | |
7738 | if (dummy_b->type != bp_call_dummy | |
7739 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7740 | continue; | |
7741 | ||
b67a2c6f | 7742 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7743 | |
7744 | while (b->related_breakpoint != b) | |
7745 | { | |
7746 | if (b_tmp == b->related_breakpoint) | |
7747 | b_tmp = b->related_breakpoint->next; | |
7748 | delete_breakpoint (b->related_breakpoint); | |
7749 | } | |
7750 | delete_breakpoint (b); | |
7751 | } | |
7752 | } | |
7753 | ||
1900040c MS |
7754 | void |
7755 | enable_overlay_breakpoints (void) | |
7756 | { | |
52f0bd74 | 7757 | struct breakpoint *b; |
1900040c MS |
7758 | |
7759 | ALL_BREAKPOINTS (b) | |
7760 | if (b->type == bp_overlay_event) | |
7761 | { | |
7762 | b->enable_state = bp_enabled; | |
44702360 | 7763 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7764 | overlay_events_enabled = 1; |
1900040c MS |
7765 | } |
7766 | } | |
7767 | ||
7768 | void | |
7769 | disable_overlay_breakpoints (void) | |
7770 | { | |
52f0bd74 | 7771 | struct breakpoint *b; |
1900040c MS |
7772 | |
7773 | ALL_BREAKPOINTS (b) | |
7774 | if (b->type == bp_overlay_event) | |
7775 | { | |
7776 | b->enable_state = bp_disabled; | |
44702360 | 7777 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7778 | overlay_events_enabled = 0; |
1900040c MS |
7779 | } |
7780 | } | |
7781 | ||
aa7d318d TT |
7782 | /* Set an active std::terminate breakpoint for each std::terminate |
7783 | master breakpoint. */ | |
7784 | void | |
7785 | set_std_terminate_breakpoint (void) | |
7786 | { | |
35df4500 | 7787 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7788 | |
35df4500 | 7789 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7790 | if (b->pspace == current_program_space |
7791 | && b->type == bp_std_terminate_master) | |
7792 | { | |
06edf0c0 | 7793 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7794 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7795 | } |
7796 | } | |
7797 | ||
7798 | /* Delete all the std::terminate breakpoints. */ | |
7799 | void | |
7800 | delete_std_terminate_breakpoint (void) | |
7801 | { | |
35df4500 | 7802 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7803 | |
35df4500 | 7804 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7805 | if (b->type == bp_std_terminate) |
7806 | delete_breakpoint (b); | |
7807 | } | |
7808 | ||
c4093a6a | 7809 | struct breakpoint * |
a6d9a66e | 7810 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7811 | { |
7812 | struct breakpoint *b; | |
c4093a6a | 7813 | |
06edf0c0 PA |
7814 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7815 | &internal_breakpoint_ops); | |
7816 | ||
b5de0fa7 | 7817 | b->enable_state = bp_enabled; |
f00aae0f | 7818 | /* location has to be used or breakpoint_re_set will delete me. */ |
305e13e6 | 7819 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7820 | |
44702360 | 7821 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7822 | |
c4093a6a JM |
7823 | return b; |
7824 | } | |
7825 | ||
0101ce28 JJ |
7826 | struct lang_and_radix |
7827 | { | |
7828 | enum language lang; | |
7829 | int radix; | |
7830 | }; | |
7831 | ||
4efc6507 DE |
7832 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7833 | ||
7834 | struct breakpoint * | |
7835 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7836 | { | |
2a7f3dff PA |
7837 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7838 | &internal_breakpoint_ops); | |
4efc6507 | 7839 | } |
0101ce28 | 7840 | |
03673fc7 PP |
7841 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7842 | ||
7843 | void | |
7844 | remove_jit_event_breakpoints (void) | |
7845 | { | |
7846 | struct breakpoint *b, *b_tmp; | |
7847 | ||
7848 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7849 | if (b->type == bp_jit_event | |
7850 | && b->loc->pspace == current_program_space) | |
7851 | delete_breakpoint (b); | |
7852 | } | |
7853 | ||
cae688ec JJ |
7854 | void |
7855 | remove_solib_event_breakpoints (void) | |
7856 | { | |
35df4500 | 7857 | struct breakpoint *b, *b_tmp; |
cae688ec | 7858 | |
35df4500 | 7859 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7860 | if (b->type == bp_shlib_event |
7861 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7862 | delete_breakpoint (b); |
7863 | } | |
7864 | ||
f37f681c PA |
7865 | /* See breakpoint.h. */ |
7866 | ||
7867 | void | |
7868 | remove_solib_event_breakpoints_at_next_stop (void) | |
7869 | { | |
7870 | struct breakpoint *b, *b_tmp; | |
7871 | ||
7872 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7873 | if (b->type == bp_shlib_event | |
7874 | && b->loc->pspace == current_program_space) | |
7875 | b->disposition = disp_del_at_next_stop; | |
7876 | } | |
7877 | ||
04086b45 PA |
7878 | /* Helper for create_solib_event_breakpoint / |
7879 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7880 | INSERT_MODE to pass through to update_global_location_list. */ | |
7881 | ||
7882 | static struct breakpoint * | |
7883 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7884 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7885 | { |
7886 | struct breakpoint *b; | |
7887 | ||
06edf0c0 PA |
7888 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7889 | &internal_breakpoint_ops); | |
04086b45 | 7890 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7891 | return b; |
7892 | } | |
7893 | ||
04086b45 PA |
7894 | struct breakpoint * |
7895 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7896 | { | |
7897 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7898 | } | |
7899 | ||
f37f681c PA |
7900 | /* See breakpoint.h. */ |
7901 | ||
7902 | struct breakpoint * | |
7903 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7904 | { | |
7905 | struct breakpoint *b; | |
7906 | ||
04086b45 PA |
7907 | /* Explicitly tell update_global_location_list to insert |
7908 | locations. */ | |
7909 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7910 | if (!b->loc->inserted) |
7911 | { | |
7912 | delete_breakpoint (b); | |
7913 | return NULL; | |
7914 | } | |
7915 | return b; | |
7916 | } | |
7917 | ||
cae688ec JJ |
7918 | /* Disable any breakpoints that are on code in shared libraries. Only |
7919 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7920 | ||
7921 | void | |
cb851954 | 7922 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7923 | { |
876fa593 | 7924 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7925 | |
876fa593 | 7926 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7927 | { |
2bdf28a0 | 7928 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7929 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7930 | |
4a64f543 MS |
7931 | /* We apply the check to all breakpoints, including disabled for |
7932 | those with loc->duplicate set. This is so that when breakpoint | |
7933 | becomes enabled, or the duplicate is removed, gdb will try to | |
7934 | insert all breakpoints. If we don't set shlib_disabled here, | |
7935 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7936 | if (((b->type == bp_breakpoint) |
508ccb1f | 7937 | || (b->type == bp_jit_event) |
1042e4c0 | 7938 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7939 | || (is_tracepoint (b))) |
6c95b8df | 7940 | && loc->pspace == current_program_space |
0d381245 | 7941 | && !loc->shlib_disabled |
6c95b8df | 7942 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7943 | ) |
0d381245 VP |
7944 | { |
7945 | loc->shlib_disabled = 1; | |
7946 | } | |
cae688ec JJ |
7947 | } |
7948 | } | |
7949 | ||
63644780 NB |
7950 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7951 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7952 | disabled ones can just stay disabled. */ | |
84acb35a | 7953 | |
75149521 | 7954 | static void |
84acb35a JJ |
7955 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7956 | { | |
876fa593 | 7957 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7958 | int disabled_shlib_breaks = 0; |
7959 | ||
c86cf029 VP |
7960 | /* SunOS a.out shared libraries are always mapped, so do not |
7961 | disable breakpoints; they will only be reported as unloaded | |
7962 | through clear_solib when GDB discards its shared library | |
7963 | list. See clear_solib for more information. */ | |
7964 | if (exec_bfd != NULL | |
7965 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7966 | return; | |
7967 | ||
876fa593 | 7968 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7969 | { |
2bdf28a0 | 7970 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7971 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7972 | |
1e4d1764 | 7973 | if (solib->pspace == loc->pspace |
e2dd7057 | 7974 | && !loc->shlib_disabled |
1e4d1764 YQ |
7975 | && (((b->type == bp_breakpoint |
7976 | || b->type == bp_jit_event | |
7977 | || b->type == bp_hardware_breakpoint) | |
7978 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7979 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7980 | || is_tracepoint (b)) | |
e2dd7057 | 7981 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7982 | { |
e2dd7057 PP |
7983 | loc->shlib_disabled = 1; |
7984 | /* At this point, we cannot rely on remove_breakpoint | |
7985 | succeeding so we must mark the breakpoint as not inserted | |
7986 | to prevent future errors occurring in remove_breakpoints. */ | |
7987 | loc->inserted = 0; | |
8d3788bd VP |
7988 | |
7989 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7990 | observer_notify_breakpoint_modified (b); | |
7991 | ||
e2dd7057 PP |
7992 | if (!disabled_shlib_breaks) |
7993 | { | |
7994 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7995 | warning (_("Temporarily disabling breakpoints " |
7996 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7997 | solib->so_name); |
84acb35a | 7998 | } |
e2dd7057 | 7999 | disabled_shlib_breaks = 1; |
84acb35a JJ |
8000 | } |
8001 | } | |
84acb35a JJ |
8002 | } |
8003 | ||
63644780 NB |
8004 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
8005 | notification of free_objfile. Only apply to enabled breakpoints, | |
8006 | disabled ones can just stay disabled. */ | |
8007 | ||
8008 | static void | |
8009 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
8010 | { | |
8011 | struct breakpoint *b; | |
8012 | ||
8013 | if (objfile == NULL) | |
8014 | return; | |
8015 | ||
d03de421 PA |
8016 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
8017 | managed by the user with add-symbol-file/remove-symbol-file. | |
8018 | Similarly to how breakpoints in shared libraries are handled in | |
8019 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
8020 | shlib_disabled so they end up uninserted on the next global |
8021 | location list update. Shared libraries not loaded by the user | |
8022 | aren't handled here -- they're already handled in | |
8023 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
8024 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
8025 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
8026 | main objfile). */ | |
8027 | if ((objfile->flags & OBJF_SHARED) == 0 | |
8028 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
8029 | return; |
8030 | ||
8031 | ALL_BREAKPOINTS (b) | |
8032 | { | |
8033 | struct bp_location *loc; | |
8034 | int bp_modified = 0; | |
8035 | ||
8036 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
8037 | continue; | |
8038 | ||
8039 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
8040 | { | |
8041 | CORE_ADDR loc_addr = loc->address; | |
8042 | ||
8043 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
8044 | && loc->loc_type != bp_loc_software_breakpoint) | |
8045 | continue; | |
8046 | ||
8047 | if (loc->shlib_disabled != 0) | |
8048 | continue; | |
8049 | ||
8050 | if (objfile->pspace != loc->pspace) | |
8051 | continue; | |
8052 | ||
8053 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
8054 | && loc->loc_type != bp_loc_software_breakpoint) | |
8055 | continue; | |
8056 | ||
8057 | if (is_addr_in_objfile (loc_addr, objfile)) | |
8058 | { | |
8059 | loc->shlib_disabled = 1; | |
08351840 PA |
8060 | /* At this point, we don't know whether the object was |
8061 | unmapped from the inferior or not, so leave the | |
8062 | inserted flag alone. We'll handle failure to | |
8063 | uninsert quietly, in case the object was indeed | |
8064 | unmapped. */ | |
63644780 NB |
8065 | |
8066 | mark_breakpoint_location_modified (loc); | |
8067 | ||
8068 | bp_modified = 1; | |
8069 | } | |
8070 | } | |
8071 | ||
8072 | if (bp_modified) | |
8073 | observer_notify_breakpoint_modified (b); | |
8074 | } | |
8075 | } | |
8076 | ||
ce78b96d JB |
8077 | /* FORK & VFORK catchpoints. */ |
8078 | ||
e29a4733 PA |
8079 | /* An instance of this type is used to represent a fork or vfork |
8080 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
8081 | class; users downcast to "struct breakpoint *" when needed. A | |
8082 | breakpoint is really of this type iff its ops pointer points to | |
8083 | CATCH_FORK_BREAKPOINT_OPS. */ | |
8084 | ||
8085 | struct fork_catchpoint | |
8086 | { | |
8087 | /* The base class. */ | |
8088 | struct breakpoint base; | |
8089 | ||
8090 | /* Process id of a child process whose forking triggered this | |
8091 | catchpoint. This field is only valid immediately after this | |
8092 | catchpoint has triggered. */ | |
8093 | ptid_t forked_inferior_pid; | |
8094 | }; | |
8095 | ||
4a64f543 MS |
8096 | /* Implement the "insert" breakpoint_ops method for fork |
8097 | catchpoints. */ | |
ce78b96d | 8098 | |
77b06cd7 TJB |
8099 | static int |
8100 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 8101 | { |
dfd4cc63 | 8102 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8103 | } |
8104 | ||
4a64f543 MS |
8105 | /* Implement the "remove" breakpoint_ops method for fork |
8106 | catchpoints. */ | |
ce78b96d JB |
8107 | |
8108 | static int | |
73971819 | 8109 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 8110 | { |
dfd4cc63 | 8111 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8112 | } |
8113 | ||
8114 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
8115 | catchpoints. */ | |
8116 | ||
8117 | static int | |
f1310107 | 8118 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
8119 | struct address_space *aspace, CORE_ADDR bp_addr, |
8120 | const struct target_waitstatus *ws) | |
ce78b96d | 8121 | { |
e29a4733 PA |
8122 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8123 | ||
f90263c1 TT |
8124 | if (ws->kind != TARGET_WAITKIND_FORKED) |
8125 | return 0; | |
8126 | ||
8127 | c->forked_inferior_pid = ws->value.related_pid; | |
8128 | return 1; | |
ce78b96d JB |
8129 | } |
8130 | ||
4a64f543 MS |
8131 | /* Implement the "print_it" breakpoint_ops method for fork |
8132 | catchpoints. */ | |
ce78b96d JB |
8133 | |
8134 | static enum print_stop_action | |
348d480f | 8135 | print_it_catch_fork (bpstat bs) |
ce78b96d | 8136 | { |
36dfb11c | 8137 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8138 | struct breakpoint *b = bs->breakpoint_at; |
8139 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 8140 | |
ce78b96d | 8141 | annotate_catchpoint (b->number); |
f303dbd6 | 8142 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8143 | if (b->disposition == disp_del) |
f303dbd6 | 8144 | ui_out_text (uiout, "Temporary catchpoint "); |
36dfb11c | 8145 | else |
f303dbd6 | 8146 | ui_out_text (uiout, "Catchpoint "); |
36dfb11c TT |
8147 | if (ui_out_is_mi_like_p (uiout)) |
8148 | { | |
8149 | ui_out_field_string (uiout, "reason", | |
8150 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
8151 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8152 | } | |
8153 | ui_out_field_int (uiout, "bkptno", b->number); | |
8154 | ui_out_text (uiout, " (forked process "); | |
8155 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8156 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8157 | return PRINT_SRC_AND_LOC; |
8158 | } | |
8159 | ||
4a64f543 MS |
8160 | /* Implement the "print_one" breakpoint_ops method for fork |
8161 | catchpoints. */ | |
ce78b96d JB |
8162 | |
8163 | static void | |
a6d9a66e | 8164 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8165 | { |
e29a4733 | 8166 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8167 | struct value_print_options opts; |
79a45e25 | 8168 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8169 | |
8170 | get_user_print_options (&opts); | |
8171 | ||
4a64f543 MS |
8172 | /* Field 4, the address, is omitted (which makes the columns not |
8173 | line up too nicely with the headers, but the effect is relatively | |
8174 | readable). */ | |
79a45b7d | 8175 | if (opts.addressprint) |
ce78b96d JB |
8176 | ui_out_field_skip (uiout, "addr"); |
8177 | annotate_field (5); | |
8178 | ui_out_text (uiout, "fork"); | |
e29a4733 | 8179 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8180 | { |
8181 | ui_out_text (uiout, ", process "); | |
8182 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8183 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8184 | ui_out_spaces (uiout, 1); |
8185 | } | |
8ac3646f TT |
8186 | |
8187 | if (ui_out_is_mi_like_p (uiout)) | |
8188 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
8189 | } |
8190 | ||
8191 | /* Implement the "print_mention" breakpoint_ops method for fork | |
8192 | catchpoints. */ | |
8193 | ||
8194 | static void | |
8195 | print_mention_catch_fork (struct breakpoint *b) | |
8196 | { | |
8197 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
8198 | } | |
8199 | ||
6149aea9 PA |
8200 | /* Implement the "print_recreate" breakpoint_ops method for fork |
8201 | catchpoints. */ | |
8202 | ||
8203 | static void | |
8204 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
8205 | { | |
8206 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 8207 | print_recreate_thread (b, fp); |
6149aea9 PA |
8208 | } |
8209 | ||
ce78b96d JB |
8210 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
8211 | ||
2060206e | 8212 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 8213 | |
4a64f543 MS |
8214 | /* Implement the "insert" breakpoint_ops method for vfork |
8215 | catchpoints. */ | |
ce78b96d | 8216 | |
77b06cd7 TJB |
8217 | static int |
8218 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 8219 | { |
dfd4cc63 | 8220 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8221 | } |
8222 | ||
4a64f543 MS |
8223 | /* Implement the "remove" breakpoint_ops method for vfork |
8224 | catchpoints. */ | |
ce78b96d JB |
8225 | |
8226 | static int | |
73971819 | 8227 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 8228 | { |
dfd4cc63 | 8229 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8230 | } |
8231 | ||
8232 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
8233 | catchpoints. */ | |
8234 | ||
8235 | static int | |
f1310107 | 8236 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
8237 | struct address_space *aspace, CORE_ADDR bp_addr, |
8238 | const struct target_waitstatus *ws) | |
ce78b96d | 8239 | { |
e29a4733 PA |
8240 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8241 | ||
f90263c1 TT |
8242 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
8243 | return 0; | |
8244 | ||
8245 | c->forked_inferior_pid = ws->value.related_pid; | |
8246 | return 1; | |
ce78b96d JB |
8247 | } |
8248 | ||
4a64f543 MS |
8249 | /* Implement the "print_it" breakpoint_ops method for vfork |
8250 | catchpoints. */ | |
ce78b96d JB |
8251 | |
8252 | static enum print_stop_action | |
348d480f | 8253 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 8254 | { |
36dfb11c | 8255 | struct ui_out *uiout = current_uiout; |
348d480f | 8256 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
8257 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
8258 | ||
ce78b96d | 8259 | annotate_catchpoint (b->number); |
f303dbd6 | 8260 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8261 | if (b->disposition == disp_del) |
f303dbd6 | 8262 | ui_out_text (uiout, "Temporary catchpoint "); |
36dfb11c | 8263 | else |
f303dbd6 | 8264 | ui_out_text (uiout, "Catchpoint "); |
36dfb11c TT |
8265 | if (ui_out_is_mi_like_p (uiout)) |
8266 | { | |
8267 | ui_out_field_string (uiout, "reason", | |
8268 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
8269 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8270 | } | |
8271 | ui_out_field_int (uiout, "bkptno", b->number); | |
8272 | ui_out_text (uiout, " (vforked process "); | |
8273 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8274 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8275 | return PRINT_SRC_AND_LOC; |
8276 | } | |
8277 | ||
4a64f543 MS |
8278 | /* Implement the "print_one" breakpoint_ops method for vfork |
8279 | catchpoints. */ | |
ce78b96d JB |
8280 | |
8281 | static void | |
a6d9a66e | 8282 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8283 | { |
e29a4733 | 8284 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8285 | struct value_print_options opts; |
79a45e25 | 8286 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8287 | |
8288 | get_user_print_options (&opts); | |
4a64f543 MS |
8289 | /* Field 4, the address, is omitted (which makes the columns not |
8290 | line up too nicely with the headers, but the effect is relatively | |
8291 | readable). */ | |
79a45b7d | 8292 | if (opts.addressprint) |
ce78b96d JB |
8293 | ui_out_field_skip (uiout, "addr"); |
8294 | annotate_field (5); | |
8295 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 8296 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8297 | { |
8298 | ui_out_text (uiout, ", process "); | |
8299 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8300 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8301 | ui_out_spaces (uiout, 1); |
8302 | } | |
8ac3646f TT |
8303 | |
8304 | if (ui_out_is_mi_like_p (uiout)) | |
8305 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
8306 | } |
8307 | ||
8308 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8309 | catchpoints. */ | |
8310 | ||
8311 | static void | |
8312 | print_mention_catch_vfork (struct breakpoint *b) | |
8313 | { | |
8314 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8315 | } | |
8316 | ||
6149aea9 PA |
8317 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8318 | catchpoints. */ | |
8319 | ||
8320 | static void | |
8321 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8322 | { | |
8323 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8324 | print_recreate_thread (b, fp); |
6149aea9 PA |
8325 | } |
8326 | ||
ce78b96d JB |
8327 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8328 | ||
2060206e | 8329 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8330 | |
edcc5120 TT |
8331 | /* An instance of this type is used to represent an solib catchpoint. |
8332 | It includes a "struct breakpoint" as a kind of base class; users | |
8333 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8334 | really of this type iff its ops pointer points to | |
8335 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
8336 | ||
8337 | struct solib_catchpoint | |
8338 | { | |
8339 | /* The base class. */ | |
8340 | struct breakpoint base; | |
8341 | ||
8342 | /* True for "catch load", false for "catch unload". */ | |
8343 | unsigned char is_load; | |
8344 | ||
8345 | /* Regular expression to match, if any. COMPILED is only valid when | |
8346 | REGEX is non-NULL. */ | |
8347 | char *regex; | |
8348 | regex_t compiled; | |
8349 | }; | |
8350 | ||
8351 | static void | |
8352 | dtor_catch_solib (struct breakpoint *b) | |
8353 | { | |
8354 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8355 | ||
8356 | if (self->regex) | |
8357 | regfree (&self->compiled); | |
8358 | xfree (self->regex); | |
8359 | ||
8360 | base_breakpoint_ops.dtor (b); | |
8361 | } | |
8362 | ||
8363 | static int | |
8364 | insert_catch_solib (struct bp_location *ignore) | |
8365 | { | |
8366 | return 0; | |
8367 | } | |
8368 | ||
8369 | static int | |
73971819 | 8370 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8371 | { |
8372 | return 0; | |
8373 | } | |
8374 | ||
8375 | static int | |
8376 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8377 | struct address_space *aspace, | |
8378 | CORE_ADDR bp_addr, | |
8379 | const struct target_waitstatus *ws) | |
8380 | { | |
8381 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8382 | struct breakpoint *other; | |
8383 | ||
8384 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8385 | return 1; | |
8386 | ||
8387 | ALL_BREAKPOINTS (other) | |
8388 | { | |
8389 | struct bp_location *other_bl; | |
8390 | ||
8391 | if (other == bl->owner) | |
8392 | continue; | |
8393 | ||
8394 | if (other->type != bp_shlib_event) | |
8395 | continue; | |
8396 | ||
8397 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
8398 | continue; | |
8399 | ||
8400 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8401 | { | |
8402 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8403 | return 1; | |
8404 | } | |
8405 | } | |
8406 | ||
8407 | return 0; | |
8408 | } | |
8409 | ||
8410 | static void | |
8411 | check_status_catch_solib (struct bpstats *bs) | |
8412 | { | |
8413 | struct solib_catchpoint *self | |
8414 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8415 | int ix; | |
8416 | ||
8417 | if (self->is_load) | |
8418 | { | |
8419 | struct so_list *iter; | |
8420 | ||
8421 | for (ix = 0; | |
8422 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8423 | ix, iter); | |
8424 | ++ix) | |
8425 | { | |
8426 | if (!self->regex | |
8427 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
8428 | return; | |
8429 | } | |
8430 | } | |
8431 | else | |
8432 | { | |
8433 | char *iter; | |
8434 | ||
8435 | for (ix = 0; | |
8436 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8437 | ix, iter); | |
8438 | ++ix) | |
8439 | { | |
8440 | if (!self->regex | |
8441 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
8442 | return; | |
8443 | } | |
8444 | } | |
8445 | ||
8446 | bs->stop = 0; | |
8447 | bs->print_it = print_it_noop; | |
8448 | } | |
8449 | ||
8450 | static enum print_stop_action | |
8451 | print_it_catch_solib (bpstat bs) | |
8452 | { | |
8453 | struct breakpoint *b = bs->breakpoint_at; | |
8454 | struct ui_out *uiout = current_uiout; | |
8455 | ||
8456 | annotate_catchpoint (b->number); | |
f303dbd6 | 8457 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8458 | if (b->disposition == disp_del) |
f303dbd6 | 8459 | ui_out_text (uiout, "Temporary catchpoint "); |
edcc5120 | 8460 | else |
f303dbd6 | 8461 | ui_out_text (uiout, "Catchpoint "); |
edcc5120 TT |
8462 | ui_out_field_int (uiout, "bkptno", b->number); |
8463 | ui_out_text (uiout, "\n"); | |
8464 | if (ui_out_is_mi_like_p (uiout)) | |
8465 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8466 | print_solib_event (1); | |
8467 | return PRINT_SRC_AND_LOC; | |
8468 | } | |
8469 | ||
8470 | static void | |
8471 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8472 | { | |
8473 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8474 | struct value_print_options opts; | |
8475 | struct ui_out *uiout = current_uiout; | |
8476 | char *msg; | |
8477 | ||
8478 | get_user_print_options (&opts); | |
8479 | /* Field 4, the address, is omitted (which makes the columns not | |
8480 | line up too nicely with the headers, but the effect is relatively | |
8481 | readable). */ | |
8482 | if (opts.addressprint) | |
8483 | { | |
8484 | annotate_field (4); | |
8485 | ui_out_field_skip (uiout, "addr"); | |
8486 | } | |
8487 | ||
8488 | annotate_field (5); | |
8489 | if (self->is_load) | |
8490 | { | |
8491 | if (self->regex) | |
8492 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8493 | else | |
8494 | msg = xstrdup (_("load of library")); | |
8495 | } | |
8496 | else | |
8497 | { | |
8498 | if (self->regex) | |
8499 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8500 | else | |
8501 | msg = xstrdup (_("unload of library")); | |
8502 | } | |
8503 | ui_out_field_string (uiout, "what", msg); | |
8504 | xfree (msg); | |
8ac3646f TT |
8505 | |
8506 | if (ui_out_is_mi_like_p (uiout)) | |
8507 | ui_out_field_string (uiout, "catch-type", | |
8508 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8509 | } |
8510 | ||
8511 | static void | |
8512 | print_mention_catch_solib (struct breakpoint *b) | |
8513 | { | |
8514 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8515 | ||
8516 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8517 | self->is_load ? "load" : "unload"); | |
8518 | } | |
8519 | ||
8520 | static void | |
8521 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8522 | { | |
8523 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8524 | ||
8525 | fprintf_unfiltered (fp, "%s %s", | |
8526 | b->disposition == disp_del ? "tcatch" : "catch", | |
8527 | self->is_load ? "load" : "unload"); | |
8528 | if (self->regex) | |
8529 | fprintf_unfiltered (fp, " %s", self->regex); | |
8530 | fprintf_unfiltered (fp, "\n"); | |
8531 | } | |
8532 | ||
8533 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8534 | ||
91985142 MG |
8535 | /* Shared helper function (MI and CLI) for creating and installing |
8536 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8537 | the events to be caught are load events, otherwise they are | |
8538 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8539 | temporary one. If ENABLED is non-zero the catchpoint is | |
8540 | created in an enabled state. */ | |
edcc5120 | 8541 | |
91985142 MG |
8542 | void |
8543 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
8544 | { |
8545 | struct solib_catchpoint *c; | |
8546 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
8547 | struct cleanup *cleanup; |
8548 | ||
edcc5120 TT |
8549 | if (!arg) |
8550 | arg = ""; | |
8551 | arg = skip_spaces (arg); | |
8552 | ||
4d01a485 | 8553 | c = new solib_catchpoint (); |
edcc5120 TT |
8554 | cleanup = make_cleanup (xfree, c); |
8555 | ||
8556 | if (*arg != '\0') | |
8557 | { | |
8558 | int errcode; | |
8559 | ||
8560 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
8561 | if (errcode != 0) | |
8562 | { | |
8563 | char *err = get_regcomp_error (errcode, &c->compiled); | |
8564 | ||
8565 | make_cleanup (xfree, err); | |
8566 | error (_("Invalid regexp (%s): %s"), err, arg); | |
8567 | } | |
8568 | c->regex = xstrdup (arg); | |
8569 | } | |
8570 | ||
8571 | c->is_load = is_load; | |
91985142 | 8572 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
8573 | &catch_solib_breakpoint_ops); |
8574 | ||
91985142 MG |
8575 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
8576 | ||
edcc5120 TT |
8577 | discard_cleanups (cleanup); |
8578 | install_breakpoint (0, &c->base, 1); | |
8579 | } | |
8580 | ||
91985142 MG |
8581 | /* A helper function that does all the work for "catch load" and |
8582 | "catch unload". */ | |
8583 | ||
8584 | static void | |
8585 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8586 | struct cmd_list_element *command) | |
8587 | { | |
8588 | int tempflag; | |
8589 | const int enabled = 1; | |
8590 | ||
8591 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8592 | ||
8593 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8594 | } | |
8595 | ||
edcc5120 TT |
8596 | static void |
8597 | catch_load_command_1 (char *arg, int from_tty, | |
8598 | struct cmd_list_element *command) | |
8599 | { | |
8600 | catch_load_or_unload (arg, from_tty, 1, command); | |
8601 | } | |
8602 | ||
8603 | static void | |
8604 | catch_unload_command_1 (char *arg, int from_tty, | |
8605 | struct cmd_list_element *command) | |
8606 | { | |
8607 | catch_load_or_unload (arg, from_tty, 0, command); | |
8608 | } | |
8609 | ||
346774a9 PA |
8610 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8611 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8612 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8613 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8614 | |
ab04a2af | 8615 | void |
346774a9 PA |
8616 | init_catchpoint (struct breakpoint *b, |
8617 | struct gdbarch *gdbarch, int tempflag, | |
8618 | char *cond_string, | |
c0a91b2b | 8619 | const struct breakpoint_ops *ops) |
c906108c | 8620 | { |
c5aa993b | 8621 | struct symtab_and_line sal; |
346774a9 | 8622 | |
fe39c653 | 8623 | init_sal (&sal); |
6c95b8df | 8624 | sal.pspace = current_program_space; |
c5aa993b | 8625 | |
28010a5d | 8626 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8627 | |
1b36a34b | 8628 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8629 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8630 | } |
8631 | ||
28010a5d | 8632 | void |
3ea46bff | 8633 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8634 | { |
8635 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8636 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8637 | if (is_tracepoint (b)) |
8638 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8639 | if (!internal) |
8640 | mention (b); | |
c56053d2 | 8641 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8642 | |
8643 | if (update_gll) | |
44702360 | 8644 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8645 | } |
8646 | ||
9b70b993 | 8647 | static void |
a6d9a66e UW |
8648 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8649 | int tempflag, char *cond_string, | |
c0a91b2b | 8650 | const struct breakpoint_ops *ops) |
c906108c | 8651 | { |
4d01a485 | 8652 | struct fork_catchpoint *c = new fork_catchpoint (); |
ce78b96d | 8653 | |
e29a4733 PA |
8654 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8655 | ||
8656 | c->forked_inferior_pid = null_ptid; | |
8657 | ||
3ea46bff | 8658 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8659 | } |
8660 | ||
fe798b75 JB |
8661 | /* Exec catchpoints. */ |
8662 | ||
b4d90040 PA |
8663 | /* An instance of this type is used to represent an exec catchpoint. |
8664 | It includes a "struct breakpoint" as a kind of base class; users | |
8665 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8666 | really of this type iff its ops pointer points to | |
8667 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8668 | ||
8669 | struct exec_catchpoint | |
8670 | { | |
8671 | /* The base class. */ | |
8672 | struct breakpoint base; | |
8673 | ||
8674 | /* Filename of a program whose exec triggered this catchpoint. | |
8675 | This field is only valid immediately after this catchpoint has | |
8676 | triggered. */ | |
8677 | char *exec_pathname; | |
8678 | }; | |
8679 | ||
8680 | /* Implement the "dtor" breakpoint_ops method for exec | |
8681 | catchpoints. */ | |
8682 | ||
8683 | static void | |
8684 | dtor_catch_exec (struct breakpoint *b) | |
8685 | { | |
8686 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8687 | ||
8688 | xfree (c->exec_pathname); | |
348d480f | 8689 | |
2060206e | 8690 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8691 | } |
8692 | ||
77b06cd7 TJB |
8693 | static int |
8694 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8695 | { |
dfd4cc63 | 8696 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8697 | } |
c906108c | 8698 | |
fe798b75 | 8699 | static int |
73971819 | 8700 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8701 | { |
dfd4cc63 | 8702 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8703 | } |
c906108c | 8704 | |
fe798b75 | 8705 | static int |
f1310107 | 8706 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8707 | struct address_space *aspace, CORE_ADDR bp_addr, |
8708 | const struct target_waitstatus *ws) | |
fe798b75 | 8709 | { |
b4d90040 PA |
8710 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8711 | ||
f90263c1 TT |
8712 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8713 | return 0; | |
8714 | ||
8715 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8716 | return 1; | |
fe798b75 | 8717 | } |
c906108c | 8718 | |
fe798b75 | 8719 | static enum print_stop_action |
348d480f | 8720 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8721 | { |
36dfb11c | 8722 | struct ui_out *uiout = current_uiout; |
348d480f | 8723 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8724 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8725 | ||
fe798b75 | 8726 | annotate_catchpoint (b->number); |
f303dbd6 | 8727 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8728 | if (b->disposition == disp_del) |
f303dbd6 | 8729 | ui_out_text (uiout, "Temporary catchpoint "); |
36dfb11c | 8730 | else |
f303dbd6 | 8731 | ui_out_text (uiout, "Catchpoint "); |
36dfb11c TT |
8732 | if (ui_out_is_mi_like_p (uiout)) |
8733 | { | |
8734 | ui_out_field_string (uiout, "reason", | |
8735 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8736 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8737 | } | |
8738 | ui_out_field_int (uiout, "bkptno", b->number); | |
8739 | ui_out_text (uiout, " (exec'd "); | |
8740 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8741 | ui_out_text (uiout, "), "); | |
8742 | ||
fe798b75 | 8743 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8744 | } |
8745 | ||
fe798b75 | 8746 | static void |
a6d9a66e | 8747 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8748 | { |
b4d90040 | 8749 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8750 | struct value_print_options opts; |
79a45e25 | 8751 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8752 | |
8753 | get_user_print_options (&opts); | |
8754 | ||
8755 | /* Field 4, the address, is omitted (which makes the columns | |
8756 | not line up too nicely with the headers, but the effect | |
8757 | is relatively readable). */ | |
8758 | if (opts.addressprint) | |
8759 | ui_out_field_skip (uiout, "addr"); | |
8760 | annotate_field (5); | |
8761 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8762 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8763 | { |
8764 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8765 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8766 | ui_out_text (uiout, "\" "); |
8767 | } | |
8ac3646f TT |
8768 | |
8769 | if (ui_out_is_mi_like_p (uiout)) | |
8770 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
8771 | } |
8772 | ||
8773 | static void | |
8774 | print_mention_catch_exec (struct breakpoint *b) | |
8775 | { | |
8776 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8777 | } | |
8778 | ||
6149aea9 PA |
8779 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8780 | catchpoints. */ | |
8781 | ||
8782 | static void | |
8783 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8784 | { | |
8785 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8786 | print_recreate_thread (b, fp); |
6149aea9 PA |
8787 | } |
8788 | ||
2060206e | 8789 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8790 | |
c906108c | 8791 | static int |
fba45db2 | 8792 | hw_breakpoint_used_count (void) |
c906108c | 8793 | { |
c906108c | 8794 | int i = 0; |
f1310107 TJB |
8795 | struct breakpoint *b; |
8796 | struct bp_location *bl; | |
c906108c SS |
8797 | |
8798 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8799 | { |
d6b74ac4 | 8800 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8801 | for (bl = b->loc; bl; bl = bl->next) |
8802 | { | |
8803 | /* Special types of hardware breakpoints may use more than | |
8804 | one register. */ | |
348d480f | 8805 | i += b->ops->resources_needed (bl); |
f1310107 | 8806 | } |
c5aa993b | 8807 | } |
c906108c SS |
8808 | |
8809 | return i; | |
8810 | } | |
8811 | ||
a1398e0c PA |
8812 | /* Returns the resources B would use if it were a hardware |
8813 | watchpoint. */ | |
8814 | ||
c906108c | 8815 | static int |
a1398e0c | 8816 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8817 | { |
c906108c | 8818 | int i = 0; |
e09342b5 | 8819 | struct bp_location *bl; |
c906108c | 8820 | |
a1398e0c PA |
8821 | if (!breakpoint_enabled (b)) |
8822 | return 0; | |
8823 | ||
8824 | for (bl = b->loc; bl; bl = bl->next) | |
8825 | { | |
8826 | /* Special types of hardware watchpoints may use more than | |
8827 | one register. */ | |
8828 | i += b->ops->resources_needed (bl); | |
8829 | } | |
8830 | ||
8831 | return i; | |
8832 | } | |
8833 | ||
8834 | /* Returns the sum the used resources of all hardware watchpoints of | |
8835 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8836 | the sum of the used resources of all hardware watchpoints of other | |
8837 | types _not_ TYPE. */ | |
8838 | ||
8839 | static int | |
8840 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8841 | enum bptype type, int *other_type_used) | |
8842 | { | |
8843 | int i = 0; | |
8844 | struct breakpoint *b; | |
8845 | ||
c906108c SS |
8846 | *other_type_used = 0; |
8847 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8848 | { |
a1398e0c PA |
8849 | if (b == except) |
8850 | continue; | |
e09342b5 TJB |
8851 | if (!breakpoint_enabled (b)) |
8852 | continue; | |
8853 | ||
a1398e0c PA |
8854 | if (b->type == type) |
8855 | i += hw_watchpoint_use_count (b); | |
8856 | else if (is_hardware_watchpoint (b)) | |
8857 | *other_type_used = 1; | |
e09342b5 TJB |
8858 | } |
8859 | ||
c906108c SS |
8860 | return i; |
8861 | } | |
8862 | ||
c906108c | 8863 | void |
fba45db2 | 8864 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8865 | { |
c5aa993b | 8866 | struct breakpoint *b; |
c906108c SS |
8867 | |
8868 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8869 | { |
cc60f2e3 | 8870 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8871 | { |
b5de0fa7 | 8872 | b->enable_state = bp_call_disabled; |
44702360 | 8873 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8874 | } |
8875 | } | |
c906108c SS |
8876 | } |
8877 | ||
8878 | void | |
fba45db2 | 8879 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8880 | { |
c5aa993b | 8881 | struct breakpoint *b; |
c906108c SS |
8882 | |
8883 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8884 | { |
cc60f2e3 | 8885 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8886 | { |
b5de0fa7 | 8887 | b->enable_state = bp_enabled; |
44702360 | 8888 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8889 | } |
8890 | } | |
c906108c SS |
8891 | } |
8892 | ||
8bea4e01 UW |
8893 | void |
8894 | disable_breakpoints_before_startup (void) | |
8895 | { | |
6c95b8df | 8896 | current_program_space->executing_startup = 1; |
44702360 | 8897 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8898 | } |
8899 | ||
8900 | void | |
8901 | enable_breakpoints_after_startup (void) | |
8902 | { | |
6c95b8df | 8903 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8904 | breakpoint_re_set (); |
8bea4e01 UW |
8905 | } |
8906 | ||
7c16b83e PA |
8907 | /* Create a new single-step breakpoint for thread THREAD, with no |
8908 | locations. */ | |
c906108c | 8909 | |
7c16b83e PA |
8910 | static struct breakpoint * |
8911 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8912 | { | |
4d01a485 | 8913 | struct breakpoint *b = new breakpoint (); |
7c16b83e PA |
8914 | |
8915 | init_raw_breakpoint_without_location (b, gdbarch, bp_single_step, | |
8916 | &momentary_breakpoint_ops); | |
8917 | ||
8918 | b->disposition = disp_donttouch; | |
8919 | b->frame_id = null_frame_id; | |
8920 | ||
8921 | b->thread = thread; | |
8922 | gdb_assert (b->thread != 0); | |
8923 | ||
8924 | add_to_breakpoint_chain (b); | |
8925 | ||
8926 | return b; | |
8927 | } | |
8928 | ||
8929 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8930 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8931 | frame. */ | |
c906108c SS |
8932 | |
8933 | struct breakpoint * | |
a6d9a66e UW |
8934 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8935 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8936 | { |
52f0bd74 | 8937 | struct breakpoint *b; |
edb3359d | 8938 | |
193facb3 JK |
8939 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8940 | tail-called one. */ | |
8941 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8942 | |
06edf0c0 | 8943 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8944 | b->enable_state = bp_enabled; |
8945 | b->disposition = disp_donttouch; | |
818dd999 | 8946 | b->frame_id = frame_id; |
c906108c | 8947 | |
4a64f543 MS |
8948 | /* If we're debugging a multi-threaded program, then we want |
8949 | momentary breakpoints to be active in only a single thread of | |
8950 | control. */ | |
39f77062 | 8951 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8952 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8953 | |
44702360 | 8954 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8955 | |
c906108c SS |
8956 | return b; |
8957 | } | |
611c83ae | 8958 | |
06edf0c0 | 8959 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8960 | The new breakpoint will have type TYPE, use OPS as its |
8961 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8962 | |
06edf0c0 PA |
8963 | static struct breakpoint * |
8964 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8965 | enum bptype type, | |
a1aa2221 LM |
8966 | const struct breakpoint_ops *ops, |
8967 | int loc_enabled) | |
e58b0e63 PA |
8968 | { |
8969 | struct breakpoint *copy; | |
8970 | ||
06edf0c0 | 8971 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8972 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8973 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8974 | |
a6d9a66e | 8975 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8976 | copy->loc->requested_address = orig->loc->requested_address; |
8977 | copy->loc->address = orig->loc->address; | |
8978 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8979 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8980 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8981 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8982 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8983 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8984 | copy->frame_id = orig->frame_id; |
8985 | copy->thread = orig->thread; | |
6c95b8df | 8986 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8987 | |
8988 | copy->enable_state = bp_enabled; | |
8989 | copy->disposition = disp_donttouch; | |
8990 | copy->number = internal_breakpoint_number--; | |
8991 | ||
44702360 | 8992 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8993 | return copy; |
8994 | } | |
8995 | ||
06edf0c0 PA |
8996 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8997 | ORIG is NULL. */ | |
8998 | ||
8999 | struct breakpoint * | |
9000 | clone_momentary_breakpoint (struct breakpoint *orig) | |
9001 | { | |
9002 | /* If there's nothing to clone, then return nothing. */ | |
9003 | if (orig == NULL) | |
9004 | return NULL; | |
9005 | ||
a1aa2221 | 9006 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
9007 | } |
9008 | ||
611c83ae | 9009 | struct breakpoint * |
a6d9a66e UW |
9010 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
9011 | enum bptype type) | |
611c83ae PA |
9012 | { |
9013 | struct symtab_and_line sal; | |
9014 | ||
9015 | sal = find_pc_line (pc, 0); | |
9016 | sal.pc = pc; | |
9017 | sal.section = find_pc_overlay (pc); | |
9018 | sal.explicit_pc = 1; | |
9019 | ||
a6d9a66e | 9020 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 9021 | } |
c906108c | 9022 | \f |
c5aa993b | 9023 | |
c906108c SS |
9024 | /* Tell the user we have just set a breakpoint B. */ |
9025 | ||
9026 | static void | |
fba45db2 | 9027 | mention (struct breakpoint *b) |
c906108c | 9028 | { |
348d480f | 9029 | b->ops->print_mention (b); |
79a45e25 | 9030 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 9031 | return; |
c906108c SS |
9032 | printf_filtered ("\n"); |
9033 | } | |
c906108c | 9034 | \f |
c5aa993b | 9035 | |
1a853c52 PA |
9036 | static int bp_loc_is_permanent (struct bp_location *loc); |
9037 | ||
0d381245 | 9038 | static struct bp_location * |
39d61571 | 9039 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
9040 | const struct symtab_and_line *sal) |
9041 | { | |
9042 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
9043 | CORE_ADDR adjusted_address; |
9044 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
9045 | ||
9046 | if (loc_gdbarch == NULL) | |
9047 | loc_gdbarch = b->gdbarch; | |
9048 | ||
9049 | /* Adjust the breakpoint's address prior to allocating a location. | |
9050 | Once we call allocate_bp_location(), that mostly uninitialized | |
9051 | location will be placed on the location chain. Adjustment of the | |
9052 | breakpoint may cause target_read_memory() to be called and we do | |
9053 | not want its scan of the location chain to find a breakpoint and | |
9054 | location that's only been partially initialized. */ | |
9055 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
9056 | sal->pc, b->type); | |
0d381245 | 9057 | |
d30113d4 | 9058 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 9059 | loc = allocate_bp_location (b); |
d30113d4 JK |
9060 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
9061 | tmp = &((*tmp)->next)) | |
0d381245 | 9062 | ; |
d30113d4 | 9063 | loc->next = *tmp; |
0d381245 | 9064 | *tmp = loc; |
3742cc8b | 9065 | |
0d381245 | 9066 | loc->requested_address = sal->pc; |
3742cc8b | 9067 | loc->address = adjusted_address; |
6c95b8df | 9068 | loc->pspace = sal->pspace; |
729662a5 TT |
9069 | loc->probe.probe = sal->probe; |
9070 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 9071 | gdb_assert (loc->pspace != NULL); |
0d381245 | 9072 | loc->section = sal->section; |
3742cc8b | 9073 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 9074 | loc->line_number = sal->line; |
2f202fde | 9075 | loc->symtab = sal->symtab; |
f8eba3c6 | 9076 | |
0e30163f JK |
9077 | set_breakpoint_location_function (loc, |
9078 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 9079 | |
6ae88661 LM |
9080 | /* While by definition, permanent breakpoints are already present in the |
9081 | code, we don't mark the location as inserted. Normally one would expect | |
9082 | that GDB could rely on that breakpoint instruction to stop the program, | |
9083 | thus removing the need to insert its own breakpoint, except that executing | |
9084 | the breakpoint instruction can kill the target instead of reporting a | |
9085 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
9086 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
9087 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
9088 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
9089 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
9090 | (If GDB later needs to continue execution past the permanent breakpoint, | |
9091 | it manually increments the PC, thus avoiding executing the breakpoint | |
9092 | instruction.) */ | |
1a853c52 | 9093 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 9094 | loc->permanent = 1; |
1a853c52 | 9095 | |
0d381245 VP |
9096 | return loc; |
9097 | } | |
514f746b AR |
9098 | \f |
9099 | ||
1cf4d951 | 9100 | /* See breakpoint.h. */ |
514f746b | 9101 | |
1cf4d951 PA |
9102 | int |
9103 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
9104 | { |
9105 | int len; | |
9106 | CORE_ADDR addr; | |
1afeeb75 | 9107 | const gdb_byte *bpoint; |
514f746b | 9108 | gdb_byte *target_mem; |
939c61fa JK |
9109 | struct cleanup *cleanup; |
9110 | int retval = 0; | |
514f746b | 9111 | |
1cf4d951 PA |
9112 | addr = address; |
9113 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
9114 | ||
9115 | /* Software breakpoints unsupported? */ | |
9116 | if (bpoint == NULL) | |
9117 | return 0; | |
9118 | ||
224c3ddb | 9119 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
9120 | |
9121 | /* Enable the automatic memory restoration from breakpoints while | |
9122 | we read the memory. Otherwise we could say about our temporary | |
9123 | breakpoints they are permanent. */ | |
9124 | cleanup = make_show_memory_breakpoints_cleanup (0); | |
9125 | ||
9126 | if (target_read_memory (address, target_mem, len) == 0 | |
9127 | && memcmp (target_mem, bpoint, len) == 0) | |
9128 | retval = 1; | |
9129 | ||
9130 | do_cleanups (cleanup); | |
9131 | ||
9132 | return retval; | |
9133 | } | |
9134 | ||
9135 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
9136 | return 0 otherwise. */ | |
9137 | ||
9138 | static int | |
9139 | bp_loc_is_permanent (struct bp_location *loc) | |
9140 | { | |
9141 | struct cleanup *cleanup; | |
9142 | int retval; | |
9143 | ||
514f746b AR |
9144 | gdb_assert (loc != NULL); |
9145 | ||
244558af LM |
9146 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
9147 | attempt to read from the addresses the locations of these breakpoint types | |
9148 | point to. program_breakpoint_here_p, below, will attempt to read | |
9149 | memory. */ | |
9150 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
9151 | return 0; | |
9152 | ||
6c95b8df | 9153 | cleanup = save_current_space_and_thread (); |
6c95b8df | 9154 | switch_to_program_space_and_thread (loc->pspace); |
939c61fa | 9155 | |
1cf4d951 | 9156 | retval = program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b | 9157 | |
939c61fa JK |
9158 | do_cleanups (cleanup); |
9159 | ||
9160 | return retval; | |
514f746b AR |
9161 | } |
9162 | ||
e7e0cddf SS |
9163 | /* Build a command list for the dprintf corresponding to the current |
9164 | settings of the dprintf style options. */ | |
9165 | ||
9166 | static void | |
9167 | update_dprintf_command_list (struct breakpoint *b) | |
9168 | { | |
9169 | char *dprintf_args = b->extra_string; | |
9170 | char *printf_line = NULL; | |
9171 | ||
9172 | if (!dprintf_args) | |
9173 | return; | |
9174 | ||
9175 | dprintf_args = skip_spaces (dprintf_args); | |
9176 | ||
9177 | /* Allow a comma, as it may have terminated a location, but don't | |
9178 | insist on it. */ | |
9179 | if (*dprintf_args == ',') | |
9180 | ++dprintf_args; | |
9181 | dprintf_args = skip_spaces (dprintf_args); | |
9182 | ||
9183 | if (*dprintf_args != '"') | |
9184 | error (_("Bad format string, missing '\"'.")); | |
9185 | ||
d3ce09f5 | 9186 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 9187 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 9188 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
9189 | { |
9190 | if (!dprintf_function) | |
9191 | error (_("No function supplied for dprintf call")); | |
9192 | ||
9193 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
9194 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
9195 | dprintf_function, | |
9196 | dprintf_channel, | |
9197 | dprintf_args); | |
9198 | else | |
9199 | printf_line = xstrprintf ("call (void) %s (%s)", | |
9200 | dprintf_function, | |
9201 | dprintf_args); | |
9202 | } | |
d3ce09f5 SS |
9203 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
9204 | { | |
9205 | if (target_can_run_breakpoint_commands ()) | |
9206 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
9207 | else | |
9208 | { | |
9209 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
9210 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
9211 | } | |
9212 | } | |
e7e0cddf SS |
9213 | else |
9214 | internal_error (__FILE__, __LINE__, | |
9215 | _("Invalid dprintf style.")); | |
9216 | ||
f28045c2 | 9217 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 9218 | /* Manufacture a printf sequence. */ |
f28045c2 | 9219 | { |
8d749320 | 9220 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 9221 | |
f28045c2 YQ |
9222 | printf_cmd_line->control_type = simple_control; |
9223 | printf_cmd_line->body_count = 0; | |
9224 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 9225 | printf_cmd_line->next = NULL; |
f28045c2 | 9226 | printf_cmd_line->line = printf_line; |
e7e0cddf | 9227 | |
f28045c2 YQ |
9228 | breakpoint_set_commands (b, printf_cmd_line); |
9229 | } | |
e7e0cddf SS |
9230 | } |
9231 | ||
9232 | /* Update all dprintf commands, making their command lists reflect | |
9233 | current style settings. */ | |
9234 | ||
9235 | static void | |
9236 | update_dprintf_commands (char *args, int from_tty, | |
9237 | struct cmd_list_element *c) | |
9238 | { | |
9239 | struct breakpoint *b; | |
9240 | ||
9241 | ALL_BREAKPOINTS (b) | |
9242 | { | |
9243 | if (b->type == bp_dprintf) | |
9244 | update_dprintf_command_list (b); | |
9245 | } | |
9246 | } | |
c3f6f71d | 9247 | |
f00aae0f KS |
9248 | /* Create a breakpoint with SAL as location. Use LOCATION |
9249 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
9250 | as condition expression. If LOCATION is NULL then create an |
9251 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
9252 | |
9253 | static void | |
d9b3f62e | 9254 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
f00aae0f KS |
9255 | struct symtabs_and_lines sals, |
9256 | struct event_location *location, | |
f8eba3c6 | 9257 | char *filter, char *cond_string, |
e7e0cddf | 9258 | char *extra_string, |
d9b3f62e PA |
9259 | enum bptype type, enum bpdisp disposition, |
9260 | int thread, int task, int ignore_count, | |
c0a91b2b | 9261 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9262 | int enabled, int internal, unsigned flags, |
9263 | int display_canonical) | |
018d34a4 | 9264 | { |
0d381245 | 9265 | int i; |
018d34a4 VP |
9266 | |
9267 | if (type == bp_hardware_breakpoint) | |
9268 | { | |
fbbd034e AS |
9269 | int target_resources_ok; |
9270 | ||
9271 | i = hw_breakpoint_used_count (); | |
9272 | target_resources_ok = | |
9273 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9274 | i + 1, 0); |
9275 | if (target_resources_ok == 0) | |
9276 | error (_("No hardware breakpoint support in the target.")); | |
9277 | else if (target_resources_ok < 0) | |
9278 | error (_("Hardware breakpoints used exceeds limit.")); | |
9279 | } | |
9280 | ||
6c95b8df PA |
9281 | gdb_assert (sals.nelts > 0); |
9282 | ||
0d381245 VP |
9283 | for (i = 0; i < sals.nelts; ++i) |
9284 | { | |
9285 | struct symtab_and_line sal = sals.sals[i]; | |
9286 | struct bp_location *loc; | |
9287 | ||
9288 | if (from_tty) | |
5af949e3 UW |
9289 | { |
9290 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9291 | if (!loc_gdbarch) | |
9292 | loc_gdbarch = gdbarch; | |
9293 | ||
9294 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9295 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9296 | } |
0d381245 VP |
9297 | |
9298 | if (i == 0) | |
9299 | { | |
d9b3f62e | 9300 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9301 | b->thread = thread; |
4a306c9a | 9302 | b->task = task; |
855a6e68 | 9303 | |
0d381245 | 9304 | b->cond_string = cond_string; |
e7e0cddf | 9305 | b->extra_string = extra_string; |
0d381245 | 9306 | b->ignore_count = ignore_count; |
41447f92 | 9307 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9308 | b->disposition = disposition; |
6c95b8df | 9309 | |
44f238bb PA |
9310 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9311 | b->loc->inserted = 1; | |
9312 | ||
0fb4aa4b PA |
9313 | if (type == bp_static_tracepoint) |
9314 | { | |
d9b3f62e | 9315 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9316 | struct static_tracepoint_marker marker; |
9317 | ||
983af33b | 9318 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9319 | { |
9320 | /* We already know the marker exists, otherwise, we | |
9321 | wouldn't see a sal for it. */ | |
f00aae0f KS |
9322 | const char *p = &event_location_to_string (b->location)[3]; |
9323 | const char *endp; | |
0fb4aa4b | 9324 | char *marker_str; |
0fb4aa4b | 9325 | |
f00aae0f | 9326 | p = skip_spaces_const (p); |
0fb4aa4b | 9327 | |
f00aae0f | 9328 | endp = skip_to_space_const (p); |
0fb4aa4b PA |
9329 | |
9330 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9331 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9332 | |
3e43a32a MS |
9333 | printf_filtered (_("Probed static tracepoint " |
9334 | "marker \"%s\"\n"), | |
d9b3f62e | 9335 | t->static_trace_marker_id); |
0fb4aa4b PA |
9336 | } |
9337 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9338 | { | |
d9b3f62e | 9339 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9340 | release_static_tracepoint_marker (&marker); |
9341 | ||
3e43a32a MS |
9342 | printf_filtered (_("Probed static tracepoint " |
9343 | "marker \"%s\"\n"), | |
d9b3f62e | 9344 | t->static_trace_marker_id); |
0fb4aa4b PA |
9345 | } |
9346 | else | |
3e43a32a MS |
9347 | warning (_("Couldn't determine the static " |
9348 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9349 | } |
9350 | ||
0d381245 VP |
9351 | loc = b->loc; |
9352 | } | |
9353 | else | |
018d34a4 | 9354 | { |
39d61571 | 9355 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9356 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9357 | loc->inserted = 1; | |
0d381245 VP |
9358 | } |
9359 | ||
9360 | if (b->cond_string) | |
9361 | { | |
bbc13ae3 KS |
9362 | const char *arg = b->cond_string; |
9363 | ||
1bb9788d TT |
9364 | loc->cond = parse_exp_1 (&arg, loc->address, |
9365 | block_for_pc (loc->address), 0); | |
0d381245 | 9366 | if (*arg) |
588ae58c | 9367 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9368 | } |
e7e0cddf SS |
9369 | |
9370 | /* Dynamic printf requires and uses additional arguments on the | |
9371 | command line, otherwise it's an error. */ | |
9372 | if (type == bp_dprintf) | |
9373 | { | |
9374 | if (b->extra_string) | |
9375 | update_dprintf_command_list (b); | |
9376 | else | |
9377 | error (_("Format string required")); | |
9378 | } | |
9379 | else if (b->extra_string) | |
588ae58c | 9380 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9381 | } |
018d34a4 | 9382 | |
56435ebe | 9383 | b->display_canonical = display_canonical; |
f00aae0f KS |
9384 | if (location != NULL) |
9385 | b->location = location; | |
018d34a4 | 9386 | else |
305e13e6 JB |
9387 | { |
9388 | const char *addr_string = NULL; | |
9389 | int addr_string_len = 0; | |
9390 | ||
9391 | if (location != NULL) | |
9392 | addr_string = event_location_to_string (location); | |
9393 | if (addr_string != NULL) | |
9394 | addr_string_len = strlen (addr_string); | |
9395 | ||
9396 | b->location = new_address_location (b->loc->address, | |
9397 | addr_string, addr_string_len); | |
9398 | } | |
f8eba3c6 | 9399 | b->filter = filter; |
d9b3f62e | 9400 | } |
018d34a4 | 9401 | |
d9b3f62e PA |
9402 | static void |
9403 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
f00aae0f KS |
9404 | struct symtabs_and_lines sals, |
9405 | struct event_location *location, | |
f8eba3c6 | 9406 | char *filter, char *cond_string, |
e7e0cddf | 9407 | char *extra_string, |
d9b3f62e PA |
9408 | enum bptype type, enum bpdisp disposition, |
9409 | int thread, int task, int ignore_count, | |
c0a91b2b | 9410 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9411 | int enabled, int internal, unsigned flags, |
9412 | int display_canonical) | |
d9b3f62e PA |
9413 | { |
9414 | struct breakpoint *b; | |
9415 | struct cleanup *old_chain; | |
9416 | ||
9417 | if (is_tracepoint_type (type)) | |
9418 | { | |
9419 | struct tracepoint *t; | |
9420 | ||
4d01a485 | 9421 | t = new tracepoint (); |
d9b3f62e PA |
9422 | b = &t->base; |
9423 | } | |
9424 | else | |
4d01a485 | 9425 | b = new breakpoint (); |
d9b3f62e PA |
9426 | |
9427 | old_chain = make_cleanup (xfree, b); | |
9428 | ||
9429 | init_breakpoint_sal (b, gdbarch, | |
f00aae0f | 9430 | sals, location, |
e7e0cddf | 9431 | filter, cond_string, extra_string, |
d9b3f62e PA |
9432 | type, disposition, |
9433 | thread, task, ignore_count, | |
9434 | ops, from_tty, | |
44f238bb PA |
9435 | enabled, internal, flags, |
9436 | display_canonical); | |
d9b3f62e PA |
9437 | discard_cleanups (old_chain); |
9438 | ||
3ea46bff | 9439 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9440 | } |
9441 | ||
9442 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9443 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9444 | value. COND_STRING, if not NULL, specified the condition to be | |
9445 | used for all breakpoints. Essentially the only case where | |
9446 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9447 | function. In that case, it's still not possible to specify | |
9448 | separate conditions for different overloaded functions, so | |
9449 | we take just a single condition string. | |
9450 | ||
c3f6f71d | 9451 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9452 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9453 | array contents). If the function fails (error() is called), the |
9454 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9455 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9456 | |
9457 | static void | |
8cdf0e15 | 9458 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9459 | struct linespec_result *canonical, |
e7e0cddf | 9460 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9461 | enum bptype type, enum bpdisp disposition, |
9462 | int thread, int task, int ignore_count, | |
c0a91b2b | 9463 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9464 | int enabled, int internal, unsigned flags) |
c906108c | 9465 | { |
018d34a4 | 9466 | int i; |
f8eba3c6 | 9467 | struct linespec_sals *lsal; |
cc59ec59 | 9468 | |
f8eba3c6 TT |
9469 | if (canonical->pre_expanded) |
9470 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9471 | ||
9472 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9473 | { |
f00aae0f | 9474 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9475 | 'break', without arguments. */ |
f00aae0f KS |
9476 | struct event_location *location |
9477 | = (canonical->location != NULL | |
9478 | ? copy_event_location (canonical->location) : NULL); | |
f8eba3c6 | 9479 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; |
f00aae0f | 9480 | struct cleanup *inner = make_cleanup_delete_event_location (location); |
0d381245 | 9481 | |
f8eba3c6 TT |
9482 | make_cleanup (xfree, filter_string); |
9483 | create_breakpoint_sal (gdbarch, lsal->sals, | |
f00aae0f | 9484 | location, |
f8eba3c6 | 9485 | filter_string, |
e7e0cddf SS |
9486 | cond_string, extra_string, |
9487 | type, disposition, | |
84f4c1fe | 9488 | thread, task, ignore_count, ops, |
44f238bb | 9489 | from_tty, enabled, internal, flags, |
56435ebe | 9490 | canonical->special_display); |
f8eba3c6 | 9491 | discard_cleanups (inner); |
c3f6f71d | 9492 | } |
c3f6f71d | 9493 | } |
c906108c | 9494 | |
f00aae0f | 9495 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9496 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9497 | addresses found. LOCATION points to the end of the SAL (for |
9498 | linespec locations). | |
9998af43 TJB |
9499 | |
9500 | The array and the line spec strings are allocated on the heap, it is | |
9501 | the caller's responsibility to free them. */ | |
c906108c | 9502 | |
b9362cc7 | 9503 | static void |
f00aae0f | 9504 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9505 | struct linespec_result *canonical) |
c3f6f71d | 9506 | { |
f00aae0f KS |
9507 | struct symtab_and_line cursal; |
9508 | ||
9509 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9510 | { | |
9511 | const char *address = get_linespec_location (location); | |
9512 | ||
9513 | if (address == NULL) | |
9514 | { | |
9515 | /* The last displayed codepoint, if it's valid, is our default | |
9516 | breakpoint address. */ | |
9517 | if (last_displayed_sal_is_valid ()) | |
9518 | { | |
9519 | struct linespec_sals lsal; | |
9520 | struct symtab_and_line sal; | |
9521 | CORE_ADDR pc; | |
9522 | ||
9523 | init_sal (&sal); /* Initialize to zeroes. */ | |
8d749320 | 9524 | lsal.sals.sals = XNEW (struct symtab_and_line); |
f00aae0f KS |
9525 | |
9526 | /* Set sal's pspace, pc, symtab, and line to the values | |
9527 | corresponding to the last call to print_frame_info. | |
9528 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9529 | as the breakpoint line number is inappropriate otherwise. | |
9530 | find_pc_line would adjust PC, re-set it back. */ | |
9531 | get_last_displayed_sal (&sal); | |
9532 | pc = sal.pc; | |
9533 | sal = find_pc_line (pc, 0); | |
9534 | ||
9535 | /* "break" without arguments is equivalent to "break *PC" | |
9536 | where PC is the last displayed codepoint's address. So | |
9537 | make sure to set sal.explicit_pc to prevent GDB from | |
9538 | trying to expand the list of sals to include all other | |
9539 | instances with the same symtab and line. */ | |
9540 | sal.pc = pc; | |
9541 | sal.explicit_pc = 1; | |
9542 | ||
9543 | lsal.sals.sals[0] = sal; | |
9544 | lsal.sals.nelts = 1; | |
9545 | lsal.canonical = NULL; | |
9546 | ||
9547 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
9548 | return; | |
9549 | } | |
9550 | else | |
9551 | error (_("No default breakpoint address now.")); | |
c906108c | 9552 | } |
c906108c | 9553 | } |
f00aae0f KS |
9554 | |
9555 | /* Force almost all breakpoints to be in terms of the | |
9556 | current_source_symtab (which is decode_line_1's default). | |
9557 | This should produce the results we want almost all of the | |
9558 | time while leaving default_breakpoint_* alone. | |
9559 | ||
9560 | ObjC: However, don't match an Objective-C method name which | |
9561 | may have a '+' or '-' succeeded by a '['. */ | |
9562 | cursal = get_current_source_symtab_and_line (); | |
9563 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9564 | { |
f00aae0f | 9565 | const char *address = NULL; |
cc80f267 | 9566 | |
f00aae0f KS |
9567 | if (event_location_type (location) == LINESPEC_LOCATION) |
9568 | address = get_linespec_location (location); | |
cc80f267 | 9569 | |
f00aae0f KS |
9570 | if (!cursal.symtab |
9571 | || (address != NULL | |
9572 | && strchr ("+-", address[0]) != NULL | |
9573 | && address[1] != '[')) | |
9574 | { | |
c2f4122d | 9575 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9576 | get_last_displayed_symtab (), |
9577 | get_last_displayed_line (), | |
9578 | canonical, NULL, NULL); | |
9579 | return; | |
9580 | } | |
c906108c | 9581 | } |
f00aae0f | 9582 | |
c2f4122d | 9583 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9584 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9585 | } |
c906108c | 9586 | |
c906108c | 9587 | |
c3f6f71d | 9588 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9589 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9590 | |
b9362cc7 | 9591 | static void |
23e7acfb | 9592 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9593 | { |
9594 | int i; | |
cc59ec59 | 9595 | |
c3f6f71d | 9596 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9597 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9598 | } |
9599 | ||
7a697b8d SS |
9600 | /* Fast tracepoints may have restrictions on valid locations. For |
9601 | instance, a fast tracepoint using a jump instead of a trap will | |
9602 | likely have to overwrite more bytes than a trap would, and so can | |
9603 | only be placed where the instruction is longer than the jump, or a | |
9604 | multi-instruction sequence does not have a jump into the middle of | |
9605 | it, etc. */ | |
9606 | ||
9607 | static void | |
9608 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9609 | struct symtabs_and_lines *sals) | |
9610 | { | |
9611 | int i, rslt; | |
9612 | struct symtab_and_line *sal; | |
9613 | char *msg; | |
9614 | struct cleanup *old_chain; | |
9615 | ||
9616 | for (i = 0; i < sals->nelts; i++) | |
9617 | { | |
f8eba3c6 TT |
9618 | struct gdbarch *sarch; |
9619 | ||
7a697b8d SS |
9620 | sal = &sals->sals[i]; |
9621 | ||
f8eba3c6 TT |
9622 | sarch = get_sal_arch (*sal); |
9623 | /* We fall back to GDBARCH if there is no architecture | |
9624 | associated with SAL. */ | |
9625 | if (sarch == NULL) | |
9626 | sarch = gdbarch; | |
6b940e6a | 9627 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, &msg); |
7a697b8d SS |
9628 | old_chain = make_cleanup (xfree, msg); |
9629 | ||
9630 | if (!rslt) | |
53c3572a | 9631 | error (_("May not have a fast tracepoint at %s%s"), |
f8eba3c6 | 9632 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9633 | |
9634 | do_cleanups (old_chain); | |
9635 | } | |
9636 | } | |
9637 | ||
018d34a4 VP |
9638 | /* Given TOK, a string specification of condition and thread, as |
9639 | accepted by the 'break' command, extract the condition | |
9640 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9641 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9642 | If no condition is found, *COND_STRING is set to NULL. |
9643 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9644 | |
9645 | static void | |
bbc13ae3 | 9646 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9647 | char **cond_string, int *thread, int *task, |
9648 | char **rest) | |
018d34a4 VP |
9649 | { |
9650 | *cond_string = NULL; | |
9651 | *thread = -1; | |
ed1d1739 KS |
9652 | *task = 0; |
9653 | *rest = NULL; | |
9654 | ||
018d34a4 VP |
9655 | while (tok && *tok) |
9656 | { | |
bbc13ae3 | 9657 | const char *end_tok; |
018d34a4 | 9658 | int toklen; |
bbc13ae3 KS |
9659 | const char *cond_start = NULL; |
9660 | const char *cond_end = NULL; | |
cc59ec59 | 9661 | |
bbc13ae3 | 9662 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9663 | |
9664 | if ((*tok == '"' || *tok == ',') && rest) | |
9665 | { | |
9666 | *rest = savestring (tok, strlen (tok)); | |
9667 | return; | |
9668 | } | |
9669 | ||
bbc13ae3 | 9670 | end_tok = skip_to_space_const (tok); |
d634f2de | 9671 | |
018d34a4 | 9672 | toklen = end_tok - tok; |
d634f2de | 9673 | |
018d34a4 VP |
9674 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9675 | { | |
9676 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9677 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9678 | cond_end = tok; |
d634f2de | 9679 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9680 | } |
9681 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9682 | { | |
5d5658a1 PA |
9683 | const char *tmptok; |
9684 | struct thread_info *thr; | |
d634f2de | 9685 | |
018d34a4 | 9686 | tok = end_tok + 1; |
5d5658a1 | 9687 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9688 | if (tok == tmptok) |
9689 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9690 | *thread = thr->global_num; |
bbc13ae3 | 9691 | tok = tmptok; |
018d34a4 | 9692 | } |
4a306c9a JB |
9693 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9694 | { | |
9695 | char *tmptok; | |
9696 | ||
9697 | tok = end_tok + 1; | |
bbc13ae3 | 9698 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9699 | if (tok == tmptok) |
9700 | error (_("Junk after task keyword.")); | |
9701 | if (!valid_task_id (*task)) | |
b6199126 | 9702 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9703 | tok = tmptok; |
4a306c9a | 9704 | } |
e7e0cddf SS |
9705 | else if (rest) |
9706 | { | |
9707 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9708 | return; |
e7e0cddf | 9709 | } |
018d34a4 VP |
9710 | else |
9711 | error (_("Junk at end of arguments.")); | |
9712 | } | |
9713 | } | |
9714 | ||
0fb4aa4b PA |
9715 | /* Decode a static tracepoint marker spec. */ |
9716 | ||
9717 | static struct symtabs_and_lines | |
f00aae0f | 9718 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9719 | { |
9720 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9721 | struct symtabs_and_lines sals; | |
0fb4aa4b | 9722 | struct cleanup *old_chain; |
f00aae0f KS |
9723 | const char *p = &(*arg_p)[3]; |
9724 | const char *endp; | |
0fb4aa4b PA |
9725 | char *marker_str; |
9726 | int i; | |
9727 | ||
f00aae0f | 9728 | p = skip_spaces_const (p); |
0fb4aa4b | 9729 | |
f00aae0f | 9730 | endp = skip_to_space_const (p); |
0fb4aa4b PA |
9731 | |
9732 | marker_str = savestring (p, endp - p); | |
9733 | old_chain = make_cleanup (xfree, marker_str); | |
9734 | ||
9735 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9736 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9737 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9738 | ||
9739 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
8d749320 | 9740 | sals.sals = XNEWVEC (struct symtab_and_line, sals.nelts); |
0fb4aa4b PA |
9741 | |
9742 | for (i = 0; i < sals.nelts; i++) | |
9743 | { | |
9744 | struct static_tracepoint_marker *marker; | |
9745 | ||
9746 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9747 | ||
9748 | init_sal (&sals.sals[i]); | |
9749 | ||
9750 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9751 | sals.sals[i].pc = marker->address; | |
9752 | ||
9753 | release_static_tracepoint_marker (marker); | |
9754 | } | |
9755 | ||
9756 | do_cleanups (old_chain); | |
9757 | ||
9758 | *arg_p = endp; | |
9759 | return sals; | |
9760 | } | |
9761 | ||
f00aae0f | 9762 | /* See breakpoint.h. */ |
0101ce28 | 9763 | |
8cdf0e15 VP |
9764 | int |
9765 | create_breakpoint (struct gdbarch *gdbarch, | |
f00aae0f | 9766 | const struct event_location *location, char *cond_string, |
e7e0cddf | 9767 | int thread, char *extra_string, |
f00aae0f | 9768 | int parse_extra, |
0fb4aa4b | 9769 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9770 | int ignore_count, |
9771 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9772 | const struct breakpoint_ops *ops, |
44f238bb PA |
9773 | int from_tty, int enabled, int internal, |
9774 | unsigned flags) | |
c3f6f71d | 9775 | { |
7efd8fc2 | 9776 | struct linespec_result canonical; |
c3f6f71d | 9777 | struct cleanup *old_chain; |
80c99de1 | 9778 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9779 | int pending = 0; |
4a306c9a | 9780 | int task = 0; |
86b17b60 | 9781 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9782 | |
348d480f PA |
9783 | gdb_assert (ops != NULL); |
9784 | ||
f00aae0f KS |
9785 | /* If extra_string isn't useful, set it to NULL. */ |
9786 | if (extra_string != NULL && *extra_string == '\0') | |
9787 | extra_string = NULL; | |
9788 | ||
7efd8fc2 | 9789 | init_linespec_result (&canonical); |
c3f6f71d | 9790 | |
492d29ea | 9791 | TRY |
b78a6381 | 9792 | { |
f00aae0f | 9793 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9794 | } |
492d29ea | 9795 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9796 | { |
492d29ea PA |
9797 | /* If caller is interested in rc value from parse, set |
9798 | value. */ | |
9799 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9800 | { |
05ff989b AC |
9801 | /* If pending breakpoint support is turned off, throw |
9802 | error. */ | |
fa8d40ab JJ |
9803 | |
9804 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9805 | throw_exception (e); |
9806 | ||
9807 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9808 | |
05ff989b AC |
9809 | /* If pending breakpoint support is auto query and the user |
9810 | selects no, then simply return the error code. */ | |
059fb39f | 9811 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9812 | && !nquery (_("Make %s pending on future shared library load? "), |
9813 | bptype_string (type_wanted))) | |
fd9b8c24 | 9814 | return 0; |
fa8d40ab | 9815 | |
05ff989b AC |
9816 | /* At this point, either the user was queried about setting |
9817 | a pending breakpoint and selected yes, or pending | |
9818 | breakpoint behavior is on and thus a pending breakpoint | |
9819 | is defaulted on behalf of the user. */ | |
f00aae0f | 9820 | pending = 1; |
0101ce28 | 9821 | } |
492d29ea PA |
9822 | else |
9823 | throw_exception (e); | |
0101ce28 | 9824 | } |
492d29ea PA |
9825 | END_CATCH |
9826 | ||
f00aae0f | 9827 | if (!pending && VEC_empty (linespec_sals, canonical.sals)) |
492d29ea | 9828 | return 0; |
c3f6f71d | 9829 | |
4a64f543 | 9830 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9831 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9832 | |
c3f6f71d JM |
9833 | /* ----------------------------- SNIP ----------------------------- |
9834 | Anything added to the cleanup chain beyond this point is assumed | |
9835 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9836 | then the memory is not reclaimed. */ |
9837 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9838 | |
c3f6f71d JM |
9839 | /* Resolve all line numbers to PC's and verify that the addresses |
9840 | are ok for the target. */ | |
0101ce28 | 9841 | if (!pending) |
f8eba3c6 TT |
9842 | { |
9843 | int ix; | |
9844 | struct linespec_sals *iter; | |
9845 | ||
9846 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9847 | breakpoint_sals_to_pc (&iter->sals); | |
9848 | } | |
c3f6f71d | 9849 | |
7a697b8d | 9850 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9851 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9852 | { |
9853 | int ix; | |
9854 | struct linespec_sals *iter; | |
9855 | ||
9856 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9857 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9858 | } | |
7a697b8d | 9859 | |
c3f6f71d JM |
9860 | /* Verify that condition can be parsed, before setting any |
9861 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9862 | breakpoint. */ |
0101ce28 | 9863 | if (!pending) |
c3f6f71d | 9864 | { |
f00aae0f | 9865 | if (parse_extra) |
72b2ff0e | 9866 | { |
0878d0fa | 9867 | char *rest; |
52d361e1 YQ |
9868 | struct linespec_sals *lsal; |
9869 | ||
9870 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9871 | ||
0878d0fa YQ |
9872 | /* Here we only parse 'arg' to separate condition |
9873 | from thread number, so parsing in context of first | |
9874 | sal is OK. When setting the breakpoint we'll | |
9875 | re-parse it in context of each sal. */ | |
9876 | ||
f00aae0f KS |
9877 | find_condition_and_thread (extra_string, lsal->sals.sals[0].pc, |
9878 | &cond_string, &thread, &task, &rest); | |
0878d0fa YQ |
9879 | if (cond_string) |
9880 | make_cleanup (xfree, cond_string); | |
9881 | if (rest) | |
9882 | make_cleanup (xfree, rest); | |
9883 | if (rest) | |
9884 | extra_string = rest; | |
f00aae0f KS |
9885 | else |
9886 | extra_string = NULL; | |
72b2ff0e | 9887 | } |
2f069f6f | 9888 | else |
72b2ff0e | 9889 | { |
f00aae0f KS |
9890 | if (type_wanted != bp_dprintf |
9891 | && extra_string != NULL && *extra_string != '\0') | |
9892 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9893 | |
9894 | /* Create a private copy of condition string. */ | |
9895 | if (cond_string) | |
9896 | { | |
9897 | cond_string = xstrdup (cond_string); | |
9898 | make_cleanup (xfree, cond_string); | |
9899 | } | |
9900 | /* Create a private copy of any extra string. */ | |
9901 | if (extra_string) | |
9902 | { | |
9903 | extra_string = xstrdup (extra_string); | |
9904 | make_cleanup (xfree, extra_string); | |
9905 | } | |
72b2ff0e | 9906 | } |
0fb4aa4b | 9907 | |
52d361e1 | 9908 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e7e0cddf | 9909 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9910 | tempflag ? disp_del : disp_donttouch, |
9911 | thread, task, ignore_count, ops, | |
44f238bb | 9912 | from_tty, enabled, internal, flags); |
c906108c | 9913 | } |
0101ce28 JJ |
9914 | else |
9915 | { | |
0101ce28 JJ |
9916 | struct breakpoint *b; |
9917 | ||
bfccc43c YQ |
9918 | if (is_tracepoint_type (type_wanted)) |
9919 | { | |
9920 | struct tracepoint *t; | |
9921 | ||
4d01a485 | 9922 | t = new tracepoint (); |
bfccc43c YQ |
9923 | b = &t->base; |
9924 | } | |
9925 | else | |
4d01a485 | 9926 | b = new breakpoint (); |
bfccc43c YQ |
9927 | |
9928 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
f00aae0f | 9929 | b->location = copy_event_location (location); |
bfccc43c | 9930 | |
f00aae0f KS |
9931 | if (parse_extra) |
9932 | b->cond_string = NULL; | |
e12c7713 MK |
9933 | else |
9934 | { | |
9935 | /* Create a private copy of condition string. */ | |
9936 | if (cond_string) | |
9937 | { | |
9938 | cond_string = xstrdup (cond_string); | |
9939 | make_cleanup (xfree, cond_string); | |
9940 | } | |
9941 | b->cond_string = cond_string; | |
15630549 | 9942 | b->thread = thread; |
e12c7713 | 9943 | } |
f00aae0f KS |
9944 | |
9945 | /* Create a private copy of any extra string. */ | |
9946 | if (extra_string != NULL) | |
9947 | { | |
9948 | extra_string = xstrdup (extra_string); | |
9949 | make_cleanup (xfree, extra_string); | |
9950 | } | |
9951 | b->extra_string = extra_string; | |
0101ce28 | 9952 | b->ignore_count = ignore_count; |
0101ce28 | 9953 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9954 | b->condition_not_parsed = 1; |
41447f92 | 9955 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9956 | if ((type_wanted != bp_breakpoint |
9957 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9958 | b->pspace = current_program_space; |
8bea4e01 | 9959 | |
bfccc43c | 9960 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9961 | } |
9962 | ||
f8eba3c6 | 9963 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9964 | { |
3e43a32a MS |
9965 | warning (_("Multiple breakpoints were set.\nUse the " |
9966 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9967 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9968 | } |
9969 | ||
80c99de1 PA |
9970 | /* That's it. Discard the cleanups for data inserted into the |
9971 | breakpoint. */ | |
9972 | discard_cleanups (bkpt_chain); | |
9973 | /* But cleanup everything else. */ | |
c3f6f71d | 9974 | do_cleanups (old_chain); |
217dc9e2 | 9975 | |
80c99de1 | 9976 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9977 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9978 | |
9979 | return 1; | |
c3f6f71d | 9980 | } |
c906108c | 9981 | |
348d480f | 9982 | /* Set a breakpoint. |
72b2ff0e VP |
9983 | ARG is a string describing breakpoint address, |
9984 | condition, and thread. | |
9985 | FLAG specifies if a breakpoint is hardware on, | |
9986 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9987 | and BP_TEMPFLAG. */ | |
348d480f | 9988 | |
98deb0da | 9989 | static void |
72b2ff0e | 9990 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9991 | { |
72b2ff0e | 9992 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9993 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9994 | ? bp_hardware_breakpoint | |
9995 | : bp_breakpoint); | |
55aa24fb | 9996 | struct breakpoint_ops *ops; |
f00aae0f KS |
9997 | struct event_location *location; |
9998 | struct cleanup *cleanup; | |
9999 | ||
10000 | location = string_to_event_location (&arg, current_language); | |
10001 | cleanup = make_cleanup_delete_event_location (location); | |
55aa24fb SDJ |
10002 | |
10003 | /* Matching breakpoints on probes. */ | |
5b56227b KS |
10004 | if (location != NULL |
10005 | && event_location_type (location) == PROBE_LOCATION) | |
55aa24fb SDJ |
10006 | ops = &bkpt_probe_breakpoint_ops; |
10007 | else | |
10008 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 10009 | |
8cdf0e15 | 10010 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
10011 | location, |
10012 | NULL, 0, arg, 1 /* parse arg */, | |
0fb4aa4b | 10013 | tempflag, type_wanted, |
8cdf0e15 VP |
10014 | 0 /* Ignore count */, |
10015 | pending_break_support, | |
55aa24fb | 10016 | ops, |
8cdf0e15 | 10017 | from_tty, |
84f4c1fe | 10018 | 1 /* enabled */, |
44f238bb PA |
10019 | 0 /* internal */, |
10020 | 0); | |
f00aae0f | 10021 | do_cleanups (cleanup); |
c906108c SS |
10022 | } |
10023 | ||
c906108c SS |
10024 | /* Helper function for break_command_1 and disassemble_command. */ |
10025 | ||
10026 | void | |
fba45db2 | 10027 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
10028 | { |
10029 | CORE_ADDR pc; | |
10030 | ||
10031 | if (sal->pc == 0 && sal->symtab != NULL) | |
10032 | { | |
10033 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 10034 | error (_("No line %d in file \"%s\"."), |
05cba821 | 10035 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 10036 | sal->pc = pc; |
6a048695 | 10037 | |
4a64f543 MS |
10038 | /* If this SAL corresponds to a breakpoint inserted using a line |
10039 | number, then skip the function prologue if necessary. */ | |
6a048695 | 10040 | if (sal->explicit_line) |
059acae7 | 10041 | skip_prologue_sal (sal); |
c906108c SS |
10042 | } |
10043 | ||
10044 | if (sal->section == 0 && sal->symtab != NULL) | |
10045 | { | |
346d1dfe | 10046 | const struct blockvector *bv; |
3977b71f | 10047 | const struct block *b; |
c5aa993b | 10048 | struct symbol *sym; |
c906108c | 10049 | |
43f3e411 DE |
10050 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
10051 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
10052 | if (bv != NULL) |
10053 | { | |
7f0df278 | 10054 | sym = block_linkage_function (b); |
c906108c SS |
10055 | if (sym != NULL) |
10056 | { | |
eb822aa6 DE |
10057 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
10058 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
10059 | sym); | |
c906108c SS |
10060 | } |
10061 | else | |
10062 | { | |
4a64f543 MS |
10063 | /* It really is worthwhile to have the section, so we'll |
10064 | just have to look harder. This case can be executed | |
10065 | if we have line numbers but no functions (as can | |
10066 | happen in assembly source). */ | |
c906108c | 10067 | |
7cbd4a93 | 10068 | struct bound_minimal_symbol msym; |
6c95b8df PA |
10069 | struct cleanup *old_chain = save_current_space_and_thread (); |
10070 | ||
10071 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
10072 | |
10073 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7cbd4a93 | 10074 | if (msym.minsym) |
efd66ac6 | 10075 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
6c95b8df PA |
10076 | |
10077 | do_cleanups (old_chain); | |
c906108c SS |
10078 | } |
10079 | } | |
10080 | } | |
10081 | } | |
10082 | ||
10083 | void | |
fba45db2 | 10084 | break_command (char *arg, int from_tty) |
c906108c | 10085 | { |
db107f19 | 10086 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10087 | } |
10088 | ||
c906108c | 10089 | void |
fba45db2 | 10090 | tbreak_command (char *arg, int from_tty) |
c906108c | 10091 | { |
db107f19 | 10092 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
10093 | } |
10094 | ||
c906108c | 10095 | static void |
fba45db2 | 10096 | hbreak_command (char *arg, int from_tty) |
c906108c | 10097 | { |
db107f19 | 10098 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
10099 | } |
10100 | ||
10101 | static void | |
fba45db2 | 10102 | thbreak_command (char *arg, int from_tty) |
c906108c | 10103 | { |
db107f19 | 10104 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
10105 | } |
10106 | ||
10107 | static void | |
fba45db2 | 10108 | stop_command (char *arg, int from_tty) |
c906108c | 10109 | { |
a3f17187 | 10110 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 10111 | Usage: stop in <function | address>\n\ |
a3f17187 | 10112 | stop at <line>\n")); |
c906108c SS |
10113 | } |
10114 | ||
10115 | static void | |
fba45db2 | 10116 | stopin_command (char *arg, int from_tty) |
c906108c SS |
10117 | { |
10118 | int badInput = 0; | |
10119 | ||
c5aa993b | 10120 | if (arg == (char *) NULL) |
c906108c SS |
10121 | badInput = 1; |
10122 | else if (*arg != '*') | |
10123 | { | |
10124 | char *argptr = arg; | |
10125 | int hasColon = 0; | |
10126 | ||
4a64f543 | 10127 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 10128 | say it is bad, otherwise, it should be an address or |
4a64f543 | 10129 | function/method name. */ |
c906108c | 10130 | while (*argptr && !hasColon) |
c5aa993b JM |
10131 | { |
10132 | hasColon = (*argptr == ':'); | |
10133 | argptr++; | |
10134 | } | |
c906108c SS |
10135 | |
10136 | if (hasColon) | |
c5aa993b | 10137 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 10138 | else |
c5aa993b | 10139 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
10140 | } |
10141 | ||
10142 | if (badInput) | |
a3f17187 | 10143 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 10144 | else |
db107f19 | 10145 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10146 | } |
10147 | ||
10148 | static void | |
fba45db2 | 10149 | stopat_command (char *arg, int from_tty) |
c906108c SS |
10150 | { |
10151 | int badInput = 0; | |
10152 | ||
c5aa993b | 10153 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
10154 | badInput = 1; |
10155 | else | |
10156 | { | |
10157 | char *argptr = arg; | |
10158 | int hasColon = 0; | |
10159 | ||
4a64f543 MS |
10160 | /* Look for a ':'. If there is a '::' then get out, otherwise |
10161 | it is probably a line number. */ | |
c906108c | 10162 | while (*argptr && !hasColon) |
c5aa993b JM |
10163 | { |
10164 | hasColon = (*argptr == ':'); | |
10165 | argptr++; | |
10166 | } | |
c906108c SS |
10167 | |
10168 | if (hasColon) | |
c5aa993b | 10169 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 10170 | else |
c5aa993b | 10171 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
10172 | } |
10173 | ||
10174 | if (badInput) | |
a3f17187 | 10175 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 10176 | else |
db107f19 | 10177 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10178 | } |
10179 | ||
e7e0cddf SS |
10180 | /* The dynamic printf command is mostly like a regular breakpoint, but |
10181 | with a prewired command list consisting of a single output command, | |
10182 | built from extra arguments supplied on the dprintf command | |
10183 | line. */ | |
10184 | ||
da821c7b | 10185 | static void |
e7e0cddf SS |
10186 | dprintf_command (char *arg, int from_tty) |
10187 | { | |
f00aae0f KS |
10188 | struct event_location *location; |
10189 | struct cleanup *cleanup; | |
10190 | ||
10191 | location = string_to_event_location (&arg, current_language); | |
10192 | cleanup = make_cleanup_delete_event_location (location); | |
10193 | ||
10194 | /* If non-NULL, ARG should have been advanced past the location; | |
10195 | the next character must be ','. */ | |
10196 | if (arg != NULL) | |
10197 | { | |
10198 | if (arg[0] != ',' || arg[1] == '\0') | |
10199 | error (_("Format string required")); | |
10200 | else | |
10201 | { | |
10202 | /* Skip the comma. */ | |
10203 | ++arg; | |
10204 | } | |
10205 | } | |
10206 | ||
e7e0cddf | 10207 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
10208 | location, |
10209 | NULL, 0, arg, 1 /* parse arg */, | |
e7e0cddf SS |
10210 | 0, bp_dprintf, |
10211 | 0 /* Ignore count */, | |
10212 | pending_break_support, | |
10213 | &dprintf_breakpoint_ops, | |
10214 | from_tty, | |
10215 | 1 /* enabled */, | |
10216 | 0 /* internal */, | |
10217 | 0); | |
f00aae0f | 10218 | do_cleanups (cleanup); |
e7e0cddf SS |
10219 | } |
10220 | ||
d3ce09f5 SS |
10221 | static void |
10222 | agent_printf_command (char *arg, int from_tty) | |
10223 | { | |
10224 | error (_("May only run agent-printf on the target")); | |
10225 | } | |
10226 | ||
f1310107 TJB |
10227 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
10228 | ranged breakpoints. */ | |
10229 | ||
10230 | static int | |
10231 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
10232 | struct address_space *aspace, | |
09ac7c10 TT |
10233 | CORE_ADDR bp_addr, |
10234 | const struct target_waitstatus *ws) | |
f1310107 | 10235 | { |
09ac7c10 | 10236 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 10237 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
10238 | return 0; |
10239 | ||
f1310107 TJB |
10240 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
10241 | bl->length, aspace, bp_addr); | |
10242 | } | |
10243 | ||
10244 | /* Implement the "resources_needed" breakpoint_ops method for | |
10245 | ranged breakpoints. */ | |
10246 | ||
10247 | static int | |
10248 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
10249 | { | |
10250 | return target_ranged_break_num_registers (); | |
10251 | } | |
10252 | ||
10253 | /* Implement the "print_it" breakpoint_ops method for | |
10254 | ranged breakpoints. */ | |
10255 | ||
10256 | static enum print_stop_action | |
348d480f | 10257 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 10258 | { |
348d480f | 10259 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 10260 | struct bp_location *bl = b->loc; |
79a45e25 | 10261 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10262 | |
10263 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10264 | ||
10265 | /* Ranged breakpoints have only one location. */ | |
10266 | gdb_assert (bl && bl->next == NULL); | |
10267 | ||
10268 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
10269 | |
10270 | maybe_print_thread_hit_breakpoint (uiout); | |
10271 | ||
f1310107 | 10272 | if (b->disposition == disp_del) |
f303dbd6 | 10273 | ui_out_text (uiout, "Temporary ranged breakpoint "); |
f1310107 | 10274 | else |
f303dbd6 | 10275 | ui_out_text (uiout, "Ranged breakpoint "); |
f1310107 TJB |
10276 | if (ui_out_is_mi_like_p (uiout)) |
10277 | { | |
10278 | ui_out_field_string (uiout, "reason", | |
10279 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
10280 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
10281 | } | |
10282 | ui_out_field_int (uiout, "bkptno", b->number); | |
10283 | ui_out_text (uiout, ", "); | |
10284 | ||
10285 | return PRINT_SRC_AND_LOC; | |
10286 | } | |
10287 | ||
10288 | /* Implement the "print_one" breakpoint_ops method for | |
10289 | ranged breakpoints. */ | |
10290 | ||
10291 | static void | |
10292 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10293 | struct bp_location **last_loc) | |
10294 | { | |
10295 | struct bp_location *bl = b->loc; | |
10296 | struct value_print_options opts; | |
79a45e25 | 10297 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10298 | |
10299 | /* Ranged breakpoints have only one location. */ | |
10300 | gdb_assert (bl && bl->next == NULL); | |
10301 | ||
10302 | get_user_print_options (&opts); | |
10303 | ||
10304 | if (opts.addressprint) | |
10305 | /* We don't print the address range here, it will be printed later | |
10306 | by print_one_detail_ranged_breakpoint. */ | |
10307 | ui_out_field_skip (uiout, "addr"); | |
10308 | annotate_field (5); | |
10309 | print_breakpoint_location (b, bl); | |
10310 | *last_loc = bl; | |
10311 | } | |
10312 | ||
10313 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10314 | ranged breakpoints. */ | |
10315 | ||
10316 | static void | |
10317 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10318 | struct ui_out *uiout) | |
10319 | { | |
10320 | CORE_ADDR address_start, address_end; | |
10321 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10322 | struct ui_file *stb = mem_fileopen (); |
10323 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10324 | |
10325 | gdb_assert (bl); | |
10326 | ||
10327 | address_start = bl->address; | |
10328 | address_end = address_start + bl->length - 1; | |
10329 | ||
10330 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10331 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10332 | print_core_address (bl->gdbarch, address_start), |
10333 | print_core_address (bl->gdbarch, address_end)); | |
10334 | ui_out_field_stream (uiout, "addr", stb); | |
10335 | ui_out_text (uiout, "\n"); | |
10336 | ||
10337 | do_cleanups (cleanup); | |
10338 | } | |
10339 | ||
10340 | /* Implement the "print_mention" breakpoint_ops method for | |
10341 | ranged breakpoints. */ | |
10342 | ||
10343 | static void | |
10344 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10345 | { | |
10346 | struct bp_location *bl = b->loc; | |
79a45e25 | 10347 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10348 | |
10349 | gdb_assert (bl); | |
10350 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10351 | ||
10352 | if (ui_out_is_mi_like_p (uiout)) | |
10353 | return; | |
10354 | ||
10355 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10356 | b->number, paddress (bl->gdbarch, bl->address), | |
10357 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10358 | } | |
10359 | ||
10360 | /* Implement the "print_recreate" breakpoint_ops method for | |
10361 | ranged breakpoints. */ | |
10362 | ||
10363 | static void | |
10364 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10365 | { | |
f00aae0f KS |
10366 | fprintf_unfiltered (fp, "break-range %s, %s", |
10367 | event_location_to_string (b->location), | |
10368 | event_location_to_string (b->location_range_end)); | |
d9b3f62e | 10369 | print_recreate_thread (b, fp); |
f1310107 TJB |
10370 | } |
10371 | ||
10372 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10373 | ||
2060206e | 10374 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10375 | |
10376 | /* Find the address where the end of the breakpoint range should be | |
10377 | placed, given the SAL of the end of the range. This is so that if | |
10378 | the user provides a line number, the end of the range is set to the | |
10379 | last instruction of the given line. */ | |
10380 | ||
10381 | static CORE_ADDR | |
10382 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10383 | { | |
10384 | CORE_ADDR end; | |
10385 | ||
10386 | /* If the user provided a PC value, use it. Otherwise, | |
10387 | find the address of the end of the given location. */ | |
10388 | if (sal.explicit_pc) | |
10389 | end = sal.pc; | |
10390 | else | |
10391 | { | |
10392 | int ret; | |
10393 | CORE_ADDR start; | |
10394 | ||
10395 | ret = find_line_pc_range (sal, &start, &end); | |
10396 | if (!ret) | |
10397 | error (_("Could not find location of the end of the range.")); | |
10398 | ||
10399 | /* find_line_pc_range returns the start of the next line. */ | |
10400 | end--; | |
10401 | } | |
10402 | ||
10403 | return end; | |
10404 | } | |
10405 | ||
10406 | /* Implement the "break-range" CLI command. */ | |
10407 | ||
10408 | static void | |
10409 | break_range_command (char *arg, int from_tty) | |
10410 | { | |
870f88f7 | 10411 | char *arg_start, *addr_string_start; |
f1310107 TJB |
10412 | struct linespec_result canonical_start, canonical_end; |
10413 | int bp_count, can_use_bp, length; | |
10414 | CORE_ADDR end; | |
10415 | struct breakpoint *b; | |
10416 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10417 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10418 | struct linespec_sals *lsal_start, *lsal_end; |
f00aae0f | 10419 | struct event_location *start_location, *end_location; |
f1310107 TJB |
10420 | |
10421 | /* We don't support software ranged breakpoints. */ | |
10422 | if (target_ranged_break_num_registers () < 0) | |
10423 | error (_("This target does not support hardware ranged breakpoints.")); | |
10424 | ||
10425 | bp_count = hw_breakpoint_used_count (); | |
10426 | bp_count += target_ranged_break_num_registers (); | |
10427 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10428 | bp_count, 0); | |
10429 | if (can_use_bp < 0) | |
10430 | error (_("Hardware breakpoints used exceeds limit.")); | |
10431 | ||
f8eba3c6 | 10432 | arg = skip_spaces (arg); |
f1310107 TJB |
10433 | if (arg == NULL || arg[0] == '\0') |
10434 | error(_("No address range specified.")); | |
10435 | ||
f1310107 TJB |
10436 | init_linespec_result (&canonical_start); |
10437 | ||
f8eba3c6 | 10438 | arg_start = arg; |
f00aae0f KS |
10439 | start_location = string_to_event_location (&arg, current_language); |
10440 | cleanup_bkpt = make_cleanup_delete_event_location (start_location); | |
10441 | parse_breakpoint_sals (start_location, &canonical_start); | |
10442 | make_cleanup_destroy_linespec_result (&canonical_start); | |
f1310107 TJB |
10443 | |
10444 | if (arg[0] != ',') | |
10445 | error (_("Too few arguments.")); | |
f8eba3c6 | 10446 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10447 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10448 | |
10449 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10450 | ||
10451 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10452 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10453 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10454 | ||
f8eba3c6 TT |
10455 | sal_start = lsal_start->sals.sals[0]; |
10456 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10457 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10458 | |
10459 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10460 | arg = skip_spaces (arg); |
f1310107 TJB |
10461 | |
10462 | /* Parse the end location. */ | |
10463 | ||
f1310107 TJB |
10464 | init_linespec_result (&canonical_end); |
10465 | arg_start = arg; | |
10466 | ||
f8eba3c6 | 10467 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10468 | parse_breakpoint_sals because we need to specify the start location's |
10469 | symtab and line as the default symtab and line for the end of the | |
10470 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10471 | where +14 means 14 lines from the start location. */ | |
f00aae0f KS |
10472 | end_location = string_to_event_location (&arg, current_language); |
10473 | make_cleanup_delete_event_location (end_location); | |
c2f4122d | 10474 | decode_line_full (end_location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f8eba3c6 TT |
10475 | sal_start.symtab, sal_start.line, |
10476 | &canonical_end, NULL, NULL); | |
10477 | ||
10478 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10479 | |
f8eba3c6 | 10480 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10481 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10482 | |
10483 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10484 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10485 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10486 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10487 | ||
f8eba3c6 | 10488 | sal_end = lsal_end->sals.sals[0]; |
f1310107 TJB |
10489 | |
10490 | end = find_breakpoint_range_end (sal_end); | |
10491 | if (sal_start.pc > end) | |
177b42fe | 10492 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10493 | |
10494 | length = end - sal_start.pc + 1; | |
10495 | if (length < 0) | |
10496 | /* Length overflowed. */ | |
10497 | error (_("Address range too large.")); | |
10498 | else if (length == 1) | |
10499 | { | |
10500 | /* This range is simple enough to be handled by | |
10501 | the `hbreak' command. */ | |
10502 | hbreak_command (addr_string_start, 1); | |
10503 | ||
10504 | do_cleanups (cleanup_bkpt); | |
10505 | ||
10506 | return; | |
10507 | } | |
10508 | ||
10509 | /* Now set up the breakpoint. */ | |
10510 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10511 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10512 | set_breakpoint_count (breakpoint_count + 1); |
10513 | b->number = breakpoint_count; | |
10514 | b->disposition = disp_donttouch; | |
f00aae0f KS |
10515 | b->location = copy_event_location (start_location); |
10516 | b->location_range_end = copy_event_location (end_location); | |
f1310107 TJB |
10517 | b->loc->length = length; |
10518 | ||
f8eba3c6 | 10519 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10520 | |
10521 | mention (b); | |
8d3788bd | 10522 | observer_notify_breakpoint_created (b); |
44702360 | 10523 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10524 | } |
10525 | ||
4a64f543 MS |
10526 | /* Return non-zero if EXP is verified as constant. Returned zero |
10527 | means EXP is variable. Also the constant detection may fail for | |
10528 | some constant expressions and in such case still falsely return | |
10529 | zero. */ | |
2e6e3d9c | 10530 | |
65d79d4b SDJ |
10531 | static int |
10532 | watchpoint_exp_is_const (const struct expression *exp) | |
10533 | { | |
10534 | int i = exp->nelts; | |
10535 | ||
10536 | while (i > 0) | |
10537 | { | |
10538 | int oplenp, argsp; | |
10539 | ||
10540 | /* We are only interested in the descriptor of each element. */ | |
10541 | operator_length (exp, i, &oplenp, &argsp); | |
10542 | i -= oplenp; | |
10543 | ||
10544 | switch (exp->elts[i].opcode) | |
10545 | { | |
10546 | case BINOP_ADD: | |
10547 | case BINOP_SUB: | |
10548 | case BINOP_MUL: | |
10549 | case BINOP_DIV: | |
10550 | case BINOP_REM: | |
10551 | case BINOP_MOD: | |
10552 | case BINOP_LSH: | |
10553 | case BINOP_RSH: | |
10554 | case BINOP_LOGICAL_AND: | |
10555 | case BINOP_LOGICAL_OR: | |
10556 | case BINOP_BITWISE_AND: | |
10557 | case BINOP_BITWISE_IOR: | |
10558 | case BINOP_BITWISE_XOR: | |
10559 | case BINOP_EQUAL: | |
10560 | case BINOP_NOTEQUAL: | |
10561 | case BINOP_LESS: | |
10562 | case BINOP_GTR: | |
10563 | case BINOP_LEQ: | |
10564 | case BINOP_GEQ: | |
10565 | case BINOP_REPEAT: | |
10566 | case BINOP_COMMA: | |
10567 | case BINOP_EXP: | |
10568 | case BINOP_MIN: | |
10569 | case BINOP_MAX: | |
10570 | case BINOP_INTDIV: | |
10571 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10572 | case TERNOP_COND: |
10573 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10574 | |
10575 | case OP_LONG: | |
10576 | case OP_DOUBLE: | |
10577 | case OP_DECFLOAT: | |
10578 | case OP_LAST: | |
10579 | case OP_COMPLEX: | |
10580 | case OP_STRING: | |
65d79d4b SDJ |
10581 | case OP_ARRAY: |
10582 | case OP_TYPE: | |
608b4967 TT |
10583 | case OP_TYPEOF: |
10584 | case OP_DECLTYPE: | |
6e72ca20 | 10585 | case OP_TYPEID: |
65d79d4b SDJ |
10586 | case OP_NAME: |
10587 | case OP_OBJC_NSSTRING: | |
10588 | ||
10589 | case UNOP_NEG: | |
10590 | case UNOP_LOGICAL_NOT: | |
10591 | case UNOP_COMPLEMENT: | |
10592 | case UNOP_ADDR: | |
10593 | case UNOP_HIGH: | |
aeaa2474 | 10594 | case UNOP_CAST: |
9eaf6705 TT |
10595 | |
10596 | case UNOP_CAST_TYPE: | |
10597 | case UNOP_REINTERPRET_CAST: | |
10598 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10599 | /* Unary, binary and ternary operators: We have to check |
10600 | their operands. If they are constant, then so is the | |
10601 | result of that operation. For instance, if A and B are | |
10602 | determined to be constants, then so is "A + B". | |
10603 | ||
10604 | UNOP_IND is one exception to the rule above, because the | |
10605 | value of *ADDR is not necessarily a constant, even when | |
10606 | ADDR is. */ | |
65d79d4b SDJ |
10607 | break; |
10608 | ||
10609 | case OP_VAR_VALUE: | |
10610 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10611 | |
65d79d4b | 10612 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10613 | possible that a buggy compiler could mark a variable as |
10614 | constant even when it is not, and TYPE_CONST would return | |
10615 | true in this case, while SYMBOL_CLASS wouldn't. | |
10616 | ||
10617 | We also have to check for function symbols because they | |
10618 | are always constant. */ | |
65d79d4b SDJ |
10619 | { |
10620 | struct symbol *s = exp->elts[i + 2].symbol; | |
10621 | ||
10622 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10623 | && SYMBOL_CLASS (s) != LOC_CONST | |
10624 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10625 | return 0; | |
10626 | break; | |
10627 | } | |
10628 | ||
10629 | /* The default action is to return 0 because we are using | |
10630 | the optimistic approach here: If we don't know something, | |
10631 | then it is not a constant. */ | |
10632 | default: | |
10633 | return 0; | |
10634 | } | |
10635 | } | |
10636 | ||
10637 | return 1; | |
10638 | } | |
10639 | ||
3a5c3e22 PA |
10640 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10641 | ||
10642 | static void | |
10643 | dtor_watchpoint (struct breakpoint *self) | |
10644 | { | |
10645 | struct watchpoint *w = (struct watchpoint *) self; | |
10646 | ||
3a5c3e22 PA |
10647 | xfree (w->exp_string); |
10648 | xfree (w->exp_string_reparse); | |
10649 | value_free (w->val); | |
10650 | ||
10651 | base_breakpoint_ops.dtor (self); | |
10652 | } | |
10653 | ||
348d480f PA |
10654 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10655 | ||
10656 | static void | |
10657 | re_set_watchpoint (struct breakpoint *b) | |
10658 | { | |
3a5c3e22 PA |
10659 | struct watchpoint *w = (struct watchpoint *) b; |
10660 | ||
348d480f PA |
10661 | /* Watchpoint can be either on expression using entirely global |
10662 | variables, or it can be on local variables. | |
10663 | ||
10664 | Watchpoints of the first kind are never auto-deleted, and even | |
10665 | persist across program restarts. Since they can use variables | |
10666 | from shared libraries, we need to reparse expression as libraries | |
10667 | are loaded and unloaded. | |
10668 | ||
10669 | Watchpoints on local variables can also change meaning as result | |
10670 | of solib event. For example, if a watchpoint uses both a local | |
10671 | and a global variables in expression, it's a local watchpoint, | |
10672 | but unloading of a shared library will make the expression | |
10673 | invalid. This is not a very common use case, but we still | |
10674 | re-evaluate expression, to avoid surprises to the user. | |
10675 | ||
10676 | Note that for local watchpoints, we re-evaluate it only if | |
10677 | watchpoints frame id is still valid. If it's not, it means the | |
10678 | watchpoint is out of scope and will be deleted soon. In fact, | |
10679 | I'm not sure we'll ever be called in this case. | |
10680 | ||
10681 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10682 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10683 | |
3a5c3e22 PA |
10684 | Don't do anything about disabled watchpoints, since they will be |
10685 | reevaluated again when enabled. */ | |
10686 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10687 | } |
10688 | ||
77b06cd7 TJB |
10689 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10690 | ||
10691 | static int | |
10692 | insert_watchpoint (struct bp_location *bl) | |
10693 | { | |
3a5c3e22 PA |
10694 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10695 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10696 | |
10697 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10698 | w->cond_exp.get ()); |
77b06cd7 TJB |
10699 | } |
10700 | ||
10701 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10702 | ||
10703 | static int | |
73971819 | 10704 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10705 | { |
3a5c3e22 PA |
10706 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10707 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10708 | |
10709 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10710 | w->cond_exp.get ()); |
e09342b5 TJB |
10711 | } |
10712 | ||
e09342b5 | 10713 | static int |
348d480f | 10714 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10715 | struct address_space *aspace, CORE_ADDR bp_addr, |
10716 | const struct target_waitstatus *ws) | |
e09342b5 | 10717 | { |
348d480f | 10718 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10719 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10720 | |
348d480f PA |
10721 | /* Continuable hardware watchpoints are treated as non-existent if the |
10722 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10723 | some data address). Otherwise gdb won't stop on a break instruction | |
10724 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10725 | been defined. Also skip watchpoints which we know did not trigger | |
10726 | (did not match the data address). */ | |
10727 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10728 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10729 | return 0; |
9c06b0b4 | 10730 | |
348d480f | 10731 | return 1; |
9c06b0b4 TJB |
10732 | } |
10733 | ||
348d480f PA |
10734 | static void |
10735 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10736 | { |
348d480f | 10737 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10738 | |
348d480f | 10739 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10740 | } |
10741 | ||
10742 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10743 | hardware watchpoints. */ |
9c06b0b4 TJB |
10744 | |
10745 | static int | |
348d480f | 10746 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10747 | { |
3a5c3e22 PA |
10748 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10749 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10750 | |
10751 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10752 | } |
10753 | ||
10754 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10755 | hardware watchpoints. */ |
9c06b0b4 TJB |
10756 | |
10757 | static int | |
348d480f | 10758 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10759 | { |
efa80663 PA |
10760 | /* Read and access watchpoints only work with hardware support. */ |
10761 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10762 | } |
10763 | ||
9c06b0b4 | 10764 | static enum print_stop_action |
348d480f | 10765 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10766 | { |
348d480f PA |
10767 | struct cleanup *old_chain; |
10768 | struct breakpoint *b; | |
f99d8bf4 | 10769 | struct ui_file *stb; |
348d480f | 10770 | enum print_stop_action result; |
3a5c3e22 | 10771 | struct watchpoint *w; |
79a45e25 | 10772 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10773 | |
10774 | gdb_assert (bs->bp_location_at != NULL); | |
10775 | ||
348d480f | 10776 | b = bs->breakpoint_at; |
3a5c3e22 | 10777 | w = (struct watchpoint *) b; |
348d480f | 10778 | |
f99d8bf4 PA |
10779 | stb = mem_fileopen (); |
10780 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 | 10781 | |
f303dbd6 PA |
10782 | annotate_watchpoint (b->number); |
10783 | maybe_print_thread_hit_breakpoint (uiout); | |
10784 | ||
9c06b0b4 TJB |
10785 | switch (b->type) |
10786 | { | |
348d480f | 10787 | case bp_watchpoint: |
9c06b0b4 | 10788 | case bp_hardware_watchpoint: |
9c06b0b4 TJB |
10789 | if (ui_out_is_mi_like_p (uiout)) |
10790 | ui_out_field_string | |
10791 | (uiout, "reason", | |
10792 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10793 | mention (b); |
10794 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10795 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10796 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10797 | ui_out_field_stream (uiout, "old", stb); |
10798 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10799 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10800 | ui_out_field_stream (uiout, "new", stb); |
10801 | ui_out_text (uiout, "\n"); | |
10802 | /* More than one watchpoint may have been triggered. */ | |
10803 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10804 | break; |
10805 | ||
10806 | case bp_read_watchpoint: | |
10807 | if (ui_out_is_mi_like_p (uiout)) | |
10808 | ui_out_field_string | |
10809 | (uiout, "reason", | |
10810 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10811 | mention (b); |
10812 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10813 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10814 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10815 | ui_out_field_stream (uiout, "value", stb); |
10816 | ui_out_text (uiout, "\n"); | |
10817 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10818 | break; |
10819 | ||
10820 | case bp_access_watchpoint: | |
348d480f PA |
10821 | if (bs->old_val != NULL) |
10822 | { | |
348d480f PA |
10823 | if (ui_out_is_mi_like_p (uiout)) |
10824 | ui_out_field_string | |
10825 | (uiout, "reason", | |
10826 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10827 | mention (b); | |
10828 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10829 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10830 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10831 | ui_out_field_stream (uiout, "old", stb); |
10832 | ui_out_text (uiout, "\nNew value = "); | |
10833 | } | |
10834 | else | |
10835 | { | |
10836 | mention (b); | |
10837 | if (ui_out_is_mi_like_p (uiout)) | |
10838 | ui_out_field_string | |
10839 | (uiout, "reason", | |
10840 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10841 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10842 | ui_out_text (uiout, "\nValue = "); | |
10843 | } | |
f99d8bf4 | 10844 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10845 | ui_out_field_stream (uiout, "new", stb); |
10846 | ui_out_text (uiout, "\n"); | |
10847 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10848 | break; |
10849 | default: | |
348d480f | 10850 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10851 | } |
10852 | ||
348d480f PA |
10853 | do_cleanups (old_chain); |
10854 | return result; | |
10855 | } | |
10856 | ||
10857 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10858 | watchpoints. */ | |
10859 | ||
10860 | static void | |
10861 | print_mention_watchpoint (struct breakpoint *b) | |
10862 | { | |
10863 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10864 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10865 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10866 | |
10867 | switch (b->type) | |
10868 | { | |
10869 | case bp_watchpoint: | |
10870 | ui_out_text (uiout, "Watchpoint "); | |
10871 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10872 | break; | |
10873 | case bp_hardware_watchpoint: | |
10874 | ui_out_text (uiout, "Hardware watchpoint "); | |
10875 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10876 | break; | |
10877 | case bp_read_watchpoint: | |
10878 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10879 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10880 | break; | |
10881 | case bp_access_watchpoint: | |
10882 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10883 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10884 | break; | |
10885 | default: | |
10886 | internal_error (__FILE__, __LINE__, | |
10887 | _("Invalid hardware watchpoint type.")); | |
10888 | } | |
10889 | ||
10890 | ui_out_field_int (uiout, "number", b->number); | |
10891 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10892 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10893 | do_cleanups (ui_out_chain); |
10894 | } | |
10895 | ||
10896 | /* Implement the "print_recreate" breakpoint_ops method for | |
10897 | watchpoints. */ | |
10898 | ||
10899 | static void | |
10900 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10901 | { | |
3a5c3e22 PA |
10902 | struct watchpoint *w = (struct watchpoint *) b; |
10903 | ||
348d480f PA |
10904 | switch (b->type) |
10905 | { | |
10906 | case bp_watchpoint: | |
10907 | case bp_hardware_watchpoint: | |
10908 | fprintf_unfiltered (fp, "watch"); | |
10909 | break; | |
10910 | case bp_read_watchpoint: | |
10911 | fprintf_unfiltered (fp, "rwatch"); | |
10912 | break; | |
10913 | case bp_access_watchpoint: | |
10914 | fprintf_unfiltered (fp, "awatch"); | |
10915 | break; | |
10916 | default: | |
10917 | internal_error (__FILE__, __LINE__, | |
10918 | _("Invalid watchpoint type.")); | |
10919 | } | |
10920 | ||
3a5c3e22 | 10921 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10922 | print_recreate_thread (b, fp); |
348d480f PA |
10923 | } |
10924 | ||
427cd150 TT |
10925 | /* Implement the "explains_signal" breakpoint_ops method for |
10926 | watchpoints. */ | |
10927 | ||
47591c29 | 10928 | static int |
427cd150 TT |
10929 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10930 | { | |
10931 | /* A software watchpoint cannot cause a signal other than | |
10932 | GDB_SIGNAL_TRAP. */ | |
10933 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10934 | return 0; |
427cd150 | 10935 | |
47591c29 | 10936 | return 1; |
427cd150 TT |
10937 | } |
10938 | ||
348d480f PA |
10939 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10940 | ||
2060206e | 10941 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10942 | |
10943 | /* Implement the "insert" breakpoint_ops method for | |
10944 | masked hardware watchpoints. */ | |
10945 | ||
10946 | static int | |
10947 | insert_masked_watchpoint (struct bp_location *bl) | |
10948 | { | |
3a5c3e22 PA |
10949 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10950 | ||
10951 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10952 | bl->watchpoint_type); |
10953 | } | |
10954 | ||
10955 | /* Implement the "remove" breakpoint_ops method for | |
10956 | masked hardware watchpoints. */ | |
10957 | ||
10958 | static int | |
73971819 | 10959 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10960 | { |
3a5c3e22 PA |
10961 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10962 | ||
10963 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10964 | bl->watchpoint_type); |
10965 | } | |
10966 | ||
10967 | /* Implement the "resources_needed" breakpoint_ops method for | |
10968 | masked hardware watchpoints. */ | |
10969 | ||
10970 | static int | |
10971 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10972 | { | |
3a5c3e22 PA |
10973 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10974 | ||
10975 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10976 | } |
10977 | ||
10978 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10979 | masked hardware watchpoints. */ | |
10980 | ||
10981 | static int | |
10982 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10983 | { | |
10984 | return 0; | |
10985 | } | |
10986 | ||
10987 | /* Implement the "print_it" breakpoint_ops method for | |
10988 | masked hardware watchpoints. */ | |
10989 | ||
10990 | static enum print_stop_action | |
10991 | print_it_masked_watchpoint (bpstat bs) | |
10992 | { | |
10993 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10994 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10995 | |
10996 | /* Masked watchpoints have only one location. */ | |
10997 | gdb_assert (b->loc && b->loc->next == NULL); | |
10998 | ||
f303dbd6 PA |
10999 | annotate_watchpoint (b->number); |
11000 | maybe_print_thread_hit_breakpoint (uiout); | |
11001 | ||
348d480f PA |
11002 | switch (b->type) |
11003 | { | |
11004 | case bp_hardware_watchpoint: | |
348d480f PA |
11005 | if (ui_out_is_mi_like_p (uiout)) |
11006 | ui_out_field_string | |
11007 | (uiout, "reason", | |
11008 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
11009 | break; | |
11010 | ||
11011 | case bp_read_watchpoint: | |
11012 | if (ui_out_is_mi_like_p (uiout)) | |
11013 | ui_out_field_string | |
11014 | (uiout, "reason", | |
11015 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
11016 | break; | |
11017 | ||
11018 | case bp_access_watchpoint: | |
11019 | if (ui_out_is_mi_like_p (uiout)) | |
11020 | ui_out_field_string | |
11021 | (uiout, "reason", | |
11022 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
11023 | break; | |
11024 | default: | |
11025 | internal_error (__FILE__, __LINE__, | |
11026 | _("Invalid hardware watchpoint type.")); | |
11027 | } | |
11028 | ||
11029 | mention (b); | |
9c06b0b4 TJB |
11030 | ui_out_text (uiout, _("\n\ |
11031 | Check the underlying instruction at PC for the memory\n\ | |
11032 | address and value which triggered this watchpoint.\n")); | |
11033 | ui_out_text (uiout, "\n"); | |
11034 | ||
11035 | /* More than one watchpoint may have been triggered. */ | |
11036 | return PRINT_UNKNOWN; | |
11037 | } | |
11038 | ||
11039 | /* Implement the "print_one_detail" breakpoint_ops method for | |
11040 | masked hardware watchpoints. */ | |
11041 | ||
11042 | static void | |
11043 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
11044 | struct ui_out *uiout) | |
11045 | { | |
3a5c3e22 PA |
11046 | struct watchpoint *w = (struct watchpoint *) b; |
11047 | ||
9c06b0b4 TJB |
11048 | /* Masked watchpoints have only one location. */ |
11049 | gdb_assert (b->loc && b->loc->next == NULL); | |
11050 | ||
11051 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 11052 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
11053 | ui_out_text (uiout, "\n"); |
11054 | } | |
11055 | ||
11056 | /* Implement the "print_mention" breakpoint_ops method for | |
11057 | masked hardware watchpoints. */ | |
11058 | ||
11059 | static void | |
11060 | print_mention_masked_watchpoint (struct breakpoint *b) | |
11061 | { | |
3a5c3e22 | 11062 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 11063 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
11064 | struct cleanup *ui_out_chain; |
11065 | ||
11066 | switch (b->type) | |
11067 | { | |
11068 | case bp_hardware_watchpoint: | |
11069 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
11070 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
11071 | break; | |
11072 | case bp_read_watchpoint: | |
11073 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
11074 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
11075 | break; | |
11076 | case bp_access_watchpoint: | |
11077 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
11078 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
11079 | break; | |
11080 | default: | |
11081 | internal_error (__FILE__, __LINE__, | |
11082 | _("Invalid hardware watchpoint type.")); | |
11083 | } | |
11084 | ||
11085 | ui_out_field_int (uiout, "number", b->number); | |
11086 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 11087 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
11088 | do_cleanups (ui_out_chain); |
11089 | } | |
11090 | ||
11091 | /* Implement the "print_recreate" breakpoint_ops method for | |
11092 | masked hardware watchpoints. */ | |
11093 | ||
11094 | static void | |
11095 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
11096 | { | |
3a5c3e22 | 11097 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
11098 | char tmp[40]; |
11099 | ||
11100 | switch (b->type) | |
11101 | { | |
11102 | case bp_hardware_watchpoint: | |
11103 | fprintf_unfiltered (fp, "watch"); | |
11104 | break; | |
11105 | case bp_read_watchpoint: | |
11106 | fprintf_unfiltered (fp, "rwatch"); | |
11107 | break; | |
11108 | case bp_access_watchpoint: | |
11109 | fprintf_unfiltered (fp, "awatch"); | |
11110 | break; | |
11111 | default: | |
11112 | internal_error (__FILE__, __LINE__, | |
11113 | _("Invalid hardware watchpoint type.")); | |
11114 | } | |
11115 | ||
3a5c3e22 PA |
11116 | sprintf_vma (tmp, w->hw_wp_mask); |
11117 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 11118 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
11119 | } |
11120 | ||
11121 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
11122 | ||
2060206e | 11123 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
11124 | |
11125 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
11126 | ||
11127 | static int | |
11128 | is_masked_watchpoint (const struct breakpoint *b) | |
11129 | { | |
11130 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
11131 | } | |
11132 | ||
53a5351d JM |
11133 | /* accessflag: hw_write: watch write, |
11134 | hw_read: watch read, | |
11135 | hw_access: watch access (read or write) */ | |
c906108c | 11136 | static void |
bbc13ae3 | 11137 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 11138 | int just_location, int internal) |
c906108c | 11139 | { |
d983da9c | 11140 | struct breakpoint *b, *scope_breakpoint = NULL; |
270140bd | 11141 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 11142 | struct value *val, *mark, *result; |
bb9d5f81 | 11143 | int saved_bitpos = 0, saved_bitsize = 0; |
c906108c | 11144 | struct frame_info *frame; |
bbc13ae3 KS |
11145 | const char *exp_start = NULL; |
11146 | const char *exp_end = NULL; | |
11147 | const char *tok, *end_tok; | |
9c06b0b4 | 11148 | int toklen = -1; |
bbc13ae3 KS |
11149 | const char *cond_start = NULL; |
11150 | const char *cond_end = NULL; | |
c906108c | 11151 | enum bptype bp_type; |
37e4754d | 11152 | int thread = -1; |
0cf6dd15 | 11153 | int pc = 0; |
9c06b0b4 TJB |
11154 | /* Flag to indicate whether we are going to use masks for |
11155 | the hardware watchpoint. */ | |
11156 | int use_mask = 0; | |
11157 | CORE_ADDR mask = 0; | |
3a5c3e22 | 11158 | struct watchpoint *w; |
bbc13ae3 KS |
11159 | char *expression; |
11160 | struct cleanup *back_to; | |
c906108c | 11161 | |
37e4754d LM |
11162 | /* Make sure that we actually have parameters to parse. */ |
11163 | if (arg != NULL && arg[0] != '\0') | |
11164 | { | |
bbc13ae3 KS |
11165 | const char *value_start; |
11166 | ||
11167 | exp_end = arg + strlen (arg); | |
37e4754d | 11168 | |
9c06b0b4 TJB |
11169 | /* Look for "parameter value" pairs at the end |
11170 | of the arguments string. */ | |
bbc13ae3 | 11171 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
11172 | { |
11173 | /* Skip whitespace at the end of the argument list. */ | |
11174 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11175 | tok--; | |
11176 | ||
11177 | /* Find the beginning of the last token. | |
11178 | This is the value of the parameter. */ | |
11179 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11180 | tok--; | |
11181 | value_start = tok + 1; | |
11182 | ||
11183 | /* Skip whitespace. */ | |
11184 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11185 | tok--; | |
11186 | ||
11187 | end_tok = tok; | |
11188 | ||
11189 | /* Find the beginning of the second to last token. | |
11190 | This is the parameter itself. */ | |
11191 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11192 | tok--; | |
11193 | tok++; | |
11194 | toklen = end_tok - tok + 1; | |
11195 | ||
61012eef | 11196 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 11197 | { |
5d5658a1 | 11198 | struct thread_info *thr; |
9c06b0b4 TJB |
11199 | /* At this point we've found a "thread" token, which means |
11200 | the user is trying to set a watchpoint that triggers | |
11201 | only in a specific thread. */ | |
5d5658a1 | 11202 | const char *endp; |
37e4754d | 11203 | |
9c06b0b4 TJB |
11204 | if (thread != -1) |
11205 | error(_("You can specify only one thread.")); | |
37e4754d | 11206 | |
9c06b0b4 | 11207 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 11208 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 11209 | |
5d5658a1 | 11210 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 11211 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 11212 | invalid_thread_id_error (value_start); |
9c06b0b4 | 11213 | |
5d5658a1 | 11214 | thread = thr->global_num; |
9c06b0b4 | 11215 | } |
61012eef | 11216 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
11217 | { |
11218 | /* We've found a "mask" token, which means the user wants to | |
11219 | create a hardware watchpoint that is going to have the mask | |
11220 | facility. */ | |
11221 | struct value *mask_value, *mark; | |
37e4754d | 11222 | |
9c06b0b4 TJB |
11223 | if (use_mask) |
11224 | error(_("You can specify only one mask.")); | |
37e4754d | 11225 | |
9c06b0b4 | 11226 | use_mask = just_location = 1; |
37e4754d | 11227 | |
9c06b0b4 TJB |
11228 | mark = value_mark (); |
11229 | mask_value = parse_to_comma_and_eval (&value_start); | |
11230 | mask = value_as_address (mask_value); | |
11231 | value_free_to_mark (mark); | |
11232 | } | |
11233 | else | |
11234 | /* We didn't recognize what we found. We should stop here. */ | |
11235 | break; | |
37e4754d | 11236 | |
9c06b0b4 TJB |
11237 | /* Truncate the string and get rid of the "parameter value" pair before |
11238 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 11239 | exp_end = tok; |
9c06b0b4 | 11240 | } |
37e4754d | 11241 | } |
bbc13ae3 KS |
11242 | else |
11243 | exp_end = arg; | |
37e4754d | 11244 | |
bbc13ae3 KS |
11245 | /* Parse the rest of the arguments. From here on out, everything |
11246 | is in terms of a newly allocated string instead of the original | |
11247 | ARG. */ | |
c906108c | 11248 | innermost_block = NULL; |
bbc13ae3 KS |
11249 | expression = savestring (arg, exp_end - arg); |
11250 | back_to = make_cleanup (xfree, expression); | |
11251 | exp_start = arg = expression; | |
4d01a485 | 11252 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 11253 | exp_end = arg; |
fa8a61dc TT |
11254 | /* Remove trailing whitespace from the expression before saving it. |
11255 | This makes the eventual display of the expression string a bit | |
11256 | prettier. */ | |
11257 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
11258 | --exp_end; | |
11259 | ||
65d79d4b | 11260 | /* Checking if the expression is not constant. */ |
4d01a485 | 11261 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
11262 | { |
11263 | int len; | |
11264 | ||
11265 | len = exp_end - exp_start; | |
11266 | while (len > 0 && isspace (exp_start[len - 1])) | |
11267 | len--; | |
11268 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
11269 | } | |
11270 | ||
c906108c SS |
11271 | exp_valid_block = innermost_block; |
11272 | mark = value_mark (); | |
4d01a485 | 11273 | fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location); |
06a64a0b | 11274 | |
bb9d5f81 PP |
11275 | if (val != NULL && just_location) |
11276 | { | |
11277 | saved_bitpos = value_bitpos (val); | |
11278 | saved_bitsize = value_bitsize (val); | |
11279 | } | |
11280 | ||
06a64a0b TT |
11281 | if (just_location) |
11282 | { | |
9c06b0b4 TJB |
11283 | int ret; |
11284 | ||
06a64a0b | 11285 | exp_valid_block = NULL; |
a1442452 | 11286 | val = value_addr (result); |
06a64a0b TT |
11287 | release_value (val); |
11288 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
11289 | |
11290 | if (use_mask) | |
11291 | { | |
11292 | ret = target_masked_watch_num_registers (value_as_address (val), | |
11293 | mask); | |
11294 | if (ret == -1) | |
11295 | error (_("This target does not support masked watchpoints.")); | |
11296 | else if (ret == -2) | |
11297 | error (_("Invalid mask or memory region.")); | |
11298 | } | |
06a64a0b TT |
11299 | } |
11300 | else if (val != NULL) | |
fa4727a6 | 11301 | release_value (val); |
c906108c | 11302 | |
bbc13ae3 KS |
11303 | tok = skip_spaces_const (arg); |
11304 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11305 | |
11306 | toklen = end_tok - tok; | |
11307 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11308 | { | |
60e1c644 | 11309 | innermost_block = NULL; |
c906108c | 11310 | tok = cond_start = end_tok + 1; |
4d01a485 | 11311 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11312 | |
11313 | /* The watchpoint expression may not be local, but the condition | |
11314 | may still be. E.g.: `watch global if local > 0'. */ | |
11315 | cond_exp_valid_block = innermost_block; | |
11316 | ||
c906108c SS |
11317 | cond_end = tok; |
11318 | } | |
11319 | if (*tok) | |
8a3fe4f8 | 11320 | error (_("Junk at end of command.")); |
c906108c | 11321 | |
d983da9c | 11322 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11323 | |
11324 | /* If the expression is "local", then set up a "watchpoint scope" | |
11325 | breakpoint at the point where we've left the scope of the watchpoint | |
11326 | expression. Create the scope breakpoint before the watchpoint, so | |
11327 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11328 | if (exp_valid_block && frame) |
d983da9c | 11329 | { |
edb3359d DJ |
11330 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11331 | { | |
11332 | scope_breakpoint | |
a6d9a66e UW |
11333 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11334 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11335 | bp_watchpoint_scope, |
11336 | &momentary_breakpoint_ops); | |
d983da9c | 11337 | |
edb3359d | 11338 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11339 | |
edb3359d DJ |
11340 | /* Automatically delete the breakpoint when it hits. */ |
11341 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11342 | |
edb3359d DJ |
11343 | /* Only break in the proper frame (help with recursion). */ |
11344 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11345 | |
edb3359d | 11346 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11347 | scope_breakpoint->loc->gdbarch |
11348 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11349 | scope_breakpoint->loc->requested_address |
11350 | = frame_unwind_caller_pc (frame); | |
11351 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11352 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11353 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11354 | scope_breakpoint->type); |
11355 | } | |
d983da9c DJ |
11356 | } |
11357 | ||
e8369a73 AB |
11358 | /* Now set up the breakpoint. We create all watchpoints as hardware |
11359 | watchpoints here even if hardware watchpoints are turned off, a call | |
11360 | to update_watchpoint later in this function will cause the type to | |
11361 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
11362 | ||
11363 | if (accessflag == hw_read) | |
11364 | bp_type = bp_read_watchpoint; | |
11365 | else if (accessflag == hw_access) | |
11366 | bp_type = bp_access_watchpoint; | |
11367 | else | |
11368 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 11369 | |
4d01a485 | 11370 | w = new watchpoint (); |
3a5c3e22 | 11371 | b = &w->base; |
348d480f | 11372 | if (use_mask) |
3a5c3e22 PA |
11373 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11374 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11375 | else |
3a5c3e22 PA |
11376 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11377 | &watchpoint_breakpoint_ops); | |
37e4754d | 11378 | b->thread = thread; |
b5de0fa7 | 11379 | b->disposition = disp_donttouch; |
348d480f | 11380 | b->pspace = current_program_space; |
b22e99fd | 11381 | w->exp = std::move (exp); |
3a5c3e22 PA |
11382 | w->exp_valid_block = exp_valid_block; |
11383 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11384 | if (just_location) |
11385 | { | |
11386 | struct type *t = value_type (val); | |
11387 | CORE_ADDR addr = value_as_address (val); | |
06a64a0b TT |
11388 | |
11389 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
06a64a0b | 11390 | |
2f408ecb PA |
11391 | std::string name = type_to_string (t); |
11392 | ||
11393 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name.c_str (), | |
d63d0675 | 11394 | core_addr_to_string (addr)); |
06a64a0b | 11395 | |
3a5c3e22 | 11396 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11397 | (int) (exp_end - exp_start), exp_start); |
11398 | ||
06a64a0b TT |
11399 | /* The above expression is in C. */ |
11400 | b->language = language_c; | |
11401 | } | |
11402 | else | |
3a5c3e22 | 11403 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11404 | |
11405 | if (use_mask) | |
11406 | { | |
3a5c3e22 | 11407 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11408 | } |
11409 | else | |
11410 | { | |
3a5c3e22 | 11411 | w->val = val; |
bb9d5f81 PP |
11412 | w->val_bitpos = saved_bitpos; |
11413 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 11414 | w->val_valid = 1; |
9c06b0b4 | 11415 | } |
77b06cd7 | 11416 | |
c906108c SS |
11417 | if (cond_start) |
11418 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11419 | else | |
11420 | b->cond_string = 0; | |
c5aa993b | 11421 | |
c906108c | 11422 | if (frame) |
f6bc2008 | 11423 | { |
3a5c3e22 PA |
11424 | w->watchpoint_frame = get_frame_id (frame); |
11425 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11426 | } |
c906108c | 11427 | else |
f6bc2008 | 11428 | { |
3a5c3e22 PA |
11429 | w->watchpoint_frame = null_frame_id; |
11430 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11431 | } |
c906108c | 11432 | |
d983da9c | 11433 | if (scope_breakpoint != NULL) |
c906108c | 11434 | { |
d983da9c DJ |
11435 | /* The scope breakpoint is related to the watchpoint. We will |
11436 | need to act on them together. */ | |
11437 | b->related_breakpoint = scope_breakpoint; | |
11438 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11439 | } |
d983da9c | 11440 | |
06a64a0b TT |
11441 | if (!just_location) |
11442 | value_free_to_mark (mark); | |
2d134ed3 | 11443 | |
492d29ea | 11444 | TRY |
a9634178 TJB |
11445 | { |
11446 | /* Finally update the new watchpoint. This creates the locations | |
11447 | that should be inserted. */ | |
3a5c3e22 | 11448 | update_watchpoint (w, 1); |
a9634178 | 11449 | } |
492d29ea | 11450 | CATCH (e, RETURN_MASK_ALL) |
a9634178 TJB |
11451 | { |
11452 | delete_breakpoint (b); | |
11453 | throw_exception (e); | |
11454 | } | |
492d29ea | 11455 | END_CATCH |
a9634178 | 11456 | |
3ea46bff | 11457 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11458 | do_cleanups (back_to); |
c906108c SS |
11459 | } |
11460 | ||
e09342b5 | 11461 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11462 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11463 | |
c906108c | 11464 | static int |
a9634178 | 11465 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11466 | { |
11467 | int found_memory_cnt = 0; | |
2e70b7b9 | 11468 | struct value *head = v; |
c906108c SS |
11469 | |
11470 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11471 | if (!can_use_hw_watchpoints) |
c906108c | 11472 | return 0; |
c5aa993b | 11473 | |
5c44784c JM |
11474 | /* Make sure that the value of the expression depends only upon |
11475 | memory contents, and values computed from them within GDB. If we | |
11476 | find any register references or function calls, we can't use a | |
11477 | hardware watchpoint. | |
11478 | ||
11479 | The idea here is that evaluating an expression generates a series | |
11480 | of values, one holding the value of every subexpression. (The | |
11481 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11482 | a*b+c.) GDB's values hold almost enough information to establish | |
11483 | the criteria given above --- they identify memory lvalues, | |
11484 | register lvalues, computed values, etcetera. So we can evaluate | |
11485 | the expression, and then scan the chain of values that leaves | |
11486 | behind to decide whether we can detect any possible change to the | |
11487 | expression's final value using only hardware watchpoints. | |
11488 | ||
11489 | However, I don't think that the values returned by inferior | |
11490 | function calls are special in any way. So this function may not | |
11491 | notice that an expression involving an inferior function call | |
11492 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11493 | for (; v; v = value_next (v)) |
c906108c | 11494 | { |
5c44784c | 11495 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11496 | { |
8464be76 DJ |
11497 | if (v != head && value_lazy (v)) |
11498 | /* A lazy memory lvalue in the chain is one that GDB never | |
11499 | needed to fetch; we either just used its address (e.g., | |
11500 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11501 | in `a,b'). This doesn't apply to HEAD; if that is | |
11502 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11503 | ; |
53a5351d | 11504 | else |
5c44784c JM |
11505 | { |
11506 | /* Ahh, memory we actually used! Check if we can cover | |
11507 | it with hardware watchpoints. */ | |
df407dfe | 11508 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11509 | |
11510 | /* We only watch structs and arrays if user asked for it | |
11511 | explicitly, never if they just happen to appear in a | |
11512 | middle of some value chain. */ | |
11513 | if (v == head | |
11514 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11515 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11516 | { | |
42ae5230 | 11517 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11518 | int len; |
11519 | int num_regs; | |
11520 | ||
a9634178 | 11521 | len = (target_exact_watchpoints |
e09342b5 TJB |
11522 | && is_scalar_type_recursive (vtype))? |
11523 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11524 | |
e09342b5 TJB |
11525 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11526 | if (!num_regs) | |
2e70b7b9 MS |
11527 | return 0; |
11528 | else | |
e09342b5 | 11529 | found_memory_cnt += num_regs; |
2e70b7b9 | 11530 | } |
5c44784c | 11531 | } |
c5aa993b | 11532 | } |
5086187c AC |
11533 | else if (VALUE_LVAL (v) != not_lval |
11534 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11535 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11536 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11537 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11538 | } |
11539 | ||
11540 | /* The expression itself looks suitable for using a hardware | |
11541 | watchpoint, but give the target machine a chance to reject it. */ | |
11542 | return found_memory_cnt; | |
11543 | } | |
11544 | ||
8b93c638 | 11545 | void |
84f4c1fe | 11546 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11547 | { |
84f4c1fe | 11548 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11549 | } |
11550 | ||
06a64a0b TT |
11551 | /* A helper function that looks for the "-location" argument and then |
11552 | calls watch_command_1. */ | |
11553 | ||
11554 | static void | |
11555 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11556 | { | |
11557 | int just_location = 0; | |
11558 | ||
11559 | if (arg | |
11560 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11561 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11562 | { | |
e9cafbcc | 11563 | arg = skip_spaces (arg); |
06a64a0b TT |
11564 | just_location = 1; |
11565 | } | |
11566 | ||
84f4c1fe | 11567 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11568 | } |
8926118c | 11569 | |
c5aa993b | 11570 | static void |
fba45db2 | 11571 | watch_command (char *arg, int from_tty) |
c906108c | 11572 | { |
06a64a0b | 11573 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11574 | } |
11575 | ||
8b93c638 | 11576 | void |
84f4c1fe | 11577 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11578 | { |
84f4c1fe | 11579 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11580 | } |
8926118c | 11581 | |
c5aa993b | 11582 | static void |
fba45db2 | 11583 | rwatch_command (char *arg, int from_tty) |
c906108c | 11584 | { |
06a64a0b | 11585 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11586 | } |
11587 | ||
8b93c638 | 11588 | void |
84f4c1fe | 11589 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11590 | { |
84f4c1fe | 11591 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11592 | } |
8926118c | 11593 | |
c5aa993b | 11594 | static void |
fba45db2 | 11595 | awatch_command (char *arg, int from_tty) |
c906108c | 11596 | { |
06a64a0b | 11597 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11598 | } |
c906108c | 11599 | \f |
c5aa993b | 11600 | |
cfc31633 PA |
11601 | /* Data for the FSM that manages the until(location)/advance commands |
11602 | in infcmd.c. Here because it uses the mechanisms of | |
11603 | breakpoints. */ | |
c906108c | 11604 | |
cfc31633 | 11605 | struct until_break_fsm |
bfec99b2 | 11606 | { |
cfc31633 PA |
11607 | /* The base class. */ |
11608 | struct thread_fsm thread_fsm; | |
11609 | ||
11610 | /* The thread that as current when the command was executed. */ | |
11611 | int thread; | |
11612 | ||
11613 | /* The breakpoint set at the destination location. */ | |
11614 | struct breakpoint *location_breakpoint; | |
11615 | ||
11616 | /* Breakpoint set at the return address in the caller frame. May be | |
11617 | NULL. */ | |
11618 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11619 | }; |
11620 | ||
8980e177 PA |
11621 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11622 | struct thread_info *thread); | |
11623 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11624 | struct thread_info *thread); | |
cfc31633 PA |
11625 | static enum async_reply_reason |
11626 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11627 | ||
11628 | /* until_break_fsm's vtable. */ | |
11629 | ||
11630 | static struct thread_fsm_ops until_break_fsm_ops = | |
11631 | { | |
11632 | NULL, /* dtor */ | |
11633 | until_break_fsm_clean_up, | |
11634 | until_break_fsm_should_stop, | |
11635 | NULL, /* return_value */ | |
11636 | until_break_fsm_async_reply_reason, | |
11637 | }; | |
11638 | ||
11639 | /* Allocate a new until_break_command_fsm. */ | |
11640 | ||
11641 | static struct until_break_fsm * | |
8980e177 | 11642 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
cfc31633 PA |
11643 | struct breakpoint *location_breakpoint, |
11644 | struct breakpoint *caller_breakpoint) | |
11645 | { | |
11646 | struct until_break_fsm *sm; | |
11647 | ||
11648 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11649 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11650 | |
11651 | sm->thread = thread; | |
11652 | sm->location_breakpoint = location_breakpoint; | |
11653 | sm->caller_breakpoint = caller_breakpoint; | |
11654 | ||
11655 | return sm; | |
11656 | } | |
11657 | ||
11658 | /* Implementation of the 'should_stop' FSM method for the | |
11659 | until(location)/advance commands. */ | |
11660 | ||
11661 | static int | |
8980e177 PA |
11662 | until_break_fsm_should_stop (struct thread_fsm *self, |
11663 | struct thread_info *tp) | |
cfc31633 PA |
11664 | { |
11665 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11666 | |
11667 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11668 | sm->location_breakpoint) != NULL | |
11669 | || (sm->caller_breakpoint != NULL | |
11670 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11671 | sm->caller_breakpoint) != NULL)) | |
11672 | thread_fsm_set_finished (self); | |
11673 | ||
11674 | return 1; | |
11675 | } | |
11676 | ||
11677 | /* Implementation of the 'clean_up' FSM method for the | |
11678 | until(location)/advance commands. */ | |
11679 | ||
c2c6d25f | 11680 | static void |
8980e177 PA |
11681 | until_break_fsm_clean_up (struct thread_fsm *self, |
11682 | struct thread_info *thread) | |
43ff13b4 | 11683 | { |
cfc31633 | 11684 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11685 | |
cfc31633 PA |
11686 | /* Clean up our temporary breakpoints. */ |
11687 | if (sm->location_breakpoint != NULL) | |
11688 | { | |
11689 | delete_breakpoint (sm->location_breakpoint); | |
11690 | sm->location_breakpoint = NULL; | |
11691 | } | |
11692 | if (sm->caller_breakpoint != NULL) | |
11693 | { | |
11694 | delete_breakpoint (sm->caller_breakpoint); | |
11695 | sm->caller_breakpoint = NULL; | |
11696 | } | |
11697 | delete_longjmp_breakpoint (sm->thread); | |
11698 | } | |
11699 | ||
11700 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11701 | until(location)/advance commands. */ | |
11702 | ||
11703 | static enum async_reply_reason | |
11704 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11705 | { | |
11706 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11707 | } |
11708 | ||
c906108c | 11709 | void |
ae66c1fc | 11710 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11711 | { |
11712 | struct symtabs_and_lines sals; | |
11713 | struct symtab_and_line sal; | |
8556afb4 PA |
11714 | struct frame_info *frame; |
11715 | struct gdbarch *frame_gdbarch; | |
11716 | struct frame_id stack_frame_id; | |
11717 | struct frame_id caller_frame_id; | |
cfc31633 PA |
11718 | struct breakpoint *location_breakpoint; |
11719 | struct breakpoint *caller_breakpoint = NULL; | |
f00aae0f | 11720 | struct cleanup *old_chain, *cleanup; |
186c406b TT |
11721 | int thread; |
11722 | struct thread_info *tp; | |
f00aae0f | 11723 | struct event_location *location; |
cfc31633 | 11724 | struct until_break_fsm *sm; |
c906108c | 11725 | |
70509625 | 11726 | clear_proceed_status (0); |
c906108c SS |
11727 | |
11728 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11729 | this function. */ |
c5aa993b | 11730 | |
f00aae0f KS |
11731 | location = string_to_event_location (&arg, current_language); |
11732 | cleanup = make_cleanup_delete_event_location (location); | |
11733 | ||
1bfeeb0f | 11734 | if (last_displayed_sal_is_valid ()) |
c2f4122d | 11735 | sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
1bfeeb0f | 11736 | get_last_displayed_symtab (), |
f8eba3c6 | 11737 | get_last_displayed_line ()); |
c906108c | 11738 | else |
f00aae0f | 11739 | sals = decode_line_1 (location, DECODE_LINE_FUNFIRSTLINE, |
c2f4122d | 11740 | NULL, (struct symtab *) NULL, 0); |
c5aa993b | 11741 | |
c906108c | 11742 | if (sals.nelts != 1) |
8a3fe4f8 | 11743 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11744 | |
c906108c | 11745 | sal = sals.sals[0]; |
4a64f543 | 11746 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11747 | |
c906108c | 11748 | if (*arg) |
8a3fe4f8 | 11749 | error (_("Junk at end of arguments.")); |
c5aa993b | 11750 | |
c906108c | 11751 | resolve_sal_pc (&sal); |
c5aa993b | 11752 | |
186c406b | 11753 | tp = inferior_thread (); |
5d5658a1 | 11754 | thread = tp->global_num; |
186c406b | 11755 | |
883bc8d1 PA |
11756 | old_chain = make_cleanup (null_cleanup, NULL); |
11757 | ||
8556afb4 PA |
11758 | /* Note linespec handling above invalidates the frame chain. |
11759 | Installing a breakpoint also invalidates the frame chain (as it | |
11760 | may need to switch threads), so do any frame handling before | |
11761 | that. */ | |
11762 | ||
11763 | frame = get_selected_frame (NULL); | |
11764 | frame_gdbarch = get_frame_arch (frame); | |
11765 | stack_frame_id = get_stack_frame_id (frame); | |
11766 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11767 | |
ae66c1fc EZ |
11768 | /* Keep within the current frame, or in frames called by the current |
11769 | one. */ | |
edb3359d | 11770 | |
883bc8d1 | 11771 | if (frame_id_p (caller_frame_id)) |
c906108c | 11772 | { |
883bc8d1 | 11773 | struct symtab_and_line sal2; |
cfc31633 | 11774 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11775 | |
11776 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11777 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11778 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11779 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11780 | sal2, | |
11781 | caller_frame_id, | |
11782 | bp_until); | |
11783 | make_cleanup_delete_breakpoint (caller_breakpoint); | |
186c406b | 11784 | |
883bc8d1 | 11785 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11786 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11787 | } |
c5aa993b | 11788 | |
c70a6932 JK |
11789 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11790 | frame = NULL; | |
11791 | ||
883bc8d1 PA |
11792 | if (anywhere) |
11793 | /* If the user told us to continue until a specified location, | |
11794 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11795 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11796 | null_frame_id, bp_until); | |
883bc8d1 PA |
11797 | else |
11798 | /* Otherwise, specify the selected frame, because we want to stop | |
11799 | only at the very same frame. */ | |
cfc31633 PA |
11800 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11801 | stack_frame_id, bp_until); | |
11802 | make_cleanup_delete_breakpoint (location_breakpoint); | |
883bc8d1 | 11803 | |
8980e177 | 11804 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
5d5658a1 | 11805 | location_breakpoint, caller_breakpoint); |
cfc31633 | 11806 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11807 | |
cfc31633 | 11808 | discard_cleanups (old_chain); |
f107f563 | 11809 | |
cfc31633 | 11810 | proceed (-1, GDB_SIGNAL_DEFAULT); |
f00aae0f KS |
11811 | |
11812 | do_cleanups (cleanup); | |
c906108c | 11813 | } |
ae66c1fc | 11814 | |
c906108c SS |
11815 | /* This function attempts to parse an optional "if <cond>" clause |
11816 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11817 | |
c906108c SS |
11818 | Else, it returns a pointer to the condition string. (It does not |
11819 | attempt to evaluate the string against a particular block.) And, | |
11820 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11821 | if clause in the arg string. */ |
53a5351d | 11822 | |
916703c0 | 11823 | char * |
fba45db2 | 11824 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11825 | { |
c5aa993b JM |
11826 | char *cond_string; |
11827 | ||
11828 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11829 | return NULL; |
c5aa993b | 11830 | |
4a64f543 | 11831 | /* Skip the "if" keyword. */ |
c906108c | 11832 | (*arg) += 2; |
c5aa993b | 11833 | |
c906108c | 11834 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11835 | condition string. */ |
e9cafbcc | 11836 | *arg = skip_spaces (*arg); |
c906108c | 11837 | cond_string = *arg; |
c5aa993b | 11838 | |
4a64f543 MS |
11839 | /* Assume that the condition occupies the remainder of the arg |
11840 | string. */ | |
c906108c | 11841 | (*arg) += strlen (cond_string); |
c5aa993b | 11842 | |
c906108c SS |
11843 | return cond_string; |
11844 | } | |
c5aa993b | 11845 | |
c906108c SS |
11846 | /* Commands to deal with catching events, such as signals, exceptions, |
11847 | process start/exit, etc. */ | |
c5aa993b JM |
11848 | |
11849 | typedef enum | |
11850 | { | |
44feb3ce TT |
11851 | catch_fork_temporary, catch_vfork_temporary, |
11852 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11853 | } |
11854 | catch_fork_kind; | |
11855 | ||
c906108c | 11856 | static void |
cc59ec59 MS |
11857 | catch_fork_command_1 (char *arg, int from_tty, |
11858 | struct cmd_list_element *command) | |
c906108c | 11859 | { |
a6d9a66e | 11860 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11861 | char *cond_string = NULL; |
44feb3ce TT |
11862 | catch_fork_kind fork_kind; |
11863 | int tempflag; | |
11864 | ||
11865 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11866 | tempflag = (fork_kind == catch_fork_temporary | |
11867 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11868 | |
44feb3ce TT |
11869 | if (!arg) |
11870 | arg = ""; | |
e9cafbcc | 11871 | arg = skip_spaces (arg); |
c5aa993b | 11872 | |
c906108c | 11873 | /* The allowed syntax is: |
c5aa993b JM |
11874 | catch [v]fork |
11875 | catch [v]fork if <cond> | |
11876 | ||
4a64f543 | 11877 | First, check if there's an if clause. */ |
c906108c | 11878 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11879 | |
c906108c | 11880 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11881 | error (_("Junk at end of arguments.")); |
c5aa993b | 11882 | |
c906108c | 11883 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11884 | and enable reporting of such events. */ |
c5aa993b JM |
11885 | switch (fork_kind) |
11886 | { | |
44feb3ce TT |
11887 | case catch_fork_temporary: |
11888 | case catch_fork_permanent: | |
a6d9a66e | 11889 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11890 | &catch_fork_breakpoint_ops); |
c906108c | 11891 | break; |
44feb3ce TT |
11892 | case catch_vfork_temporary: |
11893 | case catch_vfork_permanent: | |
a6d9a66e | 11894 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11895 | &catch_vfork_breakpoint_ops); |
c906108c | 11896 | break; |
c5aa993b | 11897 | default: |
8a3fe4f8 | 11898 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11899 | break; |
c5aa993b | 11900 | } |
c906108c SS |
11901 | } |
11902 | ||
11903 | static void | |
cc59ec59 MS |
11904 | catch_exec_command_1 (char *arg, int from_tty, |
11905 | struct cmd_list_element *command) | |
c906108c | 11906 | { |
b4d90040 | 11907 | struct exec_catchpoint *c; |
a6d9a66e | 11908 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11909 | int tempflag; |
c5aa993b | 11910 | char *cond_string = NULL; |
c906108c | 11911 | |
44feb3ce TT |
11912 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11913 | ||
11914 | if (!arg) | |
11915 | arg = ""; | |
e9cafbcc | 11916 | arg = skip_spaces (arg); |
c906108c SS |
11917 | |
11918 | /* The allowed syntax is: | |
c5aa993b JM |
11919 | catch exec |
11920 | catch exec if <cond> | |
c906108c | 11921 | |
4a64f543 | 11922 | First, check if there's an if clause. */ |
c906108c SS |
11923 | cond_string = ep_parse_optional_if_clause (&arg); |
11924 | ||
11925 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11926 | error (_("Junk at end of arguments.")); |
c906108c | 11927 | |
4d01a485 | 11928 | c = new exec_catchpoint (); |
b4d90040 PA |
11929 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, |
11930 | &catch_exec_breakpoint_ops); | |
11931 | c->exec_pathname = NULL; | |
11932 | ||
3ea46bff | 11933 | install_breakpoint (0, &c->base, 1); |
c906108c | 11934 | } |
c5aa993b | 11935 | |
9ac4176b | 11936 | void |
28010a5d PA |
11937 | init_ada_exception_breakpoint (struct breakpoint *b, |
11938 | struct gdbarch *gdbarch, | |
11939 | struct symtab_and_line sal, | |
11940 | char *addr_string, | |
c0a91b2b | 11941 | const struct breakpoint_ops *ops, |
28010a5d | 11942 | int tempflag, |
349774ef | 11943 | int enabled, |
28010a5d | 11944 | int from_tty) |
f7f9143b | 11945 | { |
f7f9143b JB |
11946 | if (from_tty) |
11947 | { | |
5af949e3 UW |
11948 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11949 | if (!loc_gdbarch) | |
11950 | loc_gdbarch = gdbarch; | |
11951 | ||
6c95b8df PA |
11952 | describe_other_breakpoints (loc_gdbarch, |
11953 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11954 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11955 | version for exception catchpoints, because two catchpoints | |
11956 | used for different exception names will use the same address. | |
11957 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11958 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11959 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11960 | the user what type of catchpoint it is. The above is good |
11961 | enough for now, though. */ | |
11962 | } | |
11963 | ||
28010a5d | 11964 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11965 | |
349774ef | 11966 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11967 | b->disposition = tempflag ? disp_del : disp_donttouch; |
f00aae0f KS |
11968 | b->location = string_to_event_location (&addr_string, |
11969 | language_def (language_ada)); | |
f7f9143b | 11970 | b->language = language_ada; |
f7f9143b JB |
11971 | } |
11972 | ||
c906108c | 11973 | static void |
fba45db2 | 11974 | catch_command (char *arg, int from_tty) |
c906108c | 11975 | { |
44feb3ce | 11976 | error (_("Catch requires an event name.")); |
c906108c SS |
11977 | } |
11978 | \f | |
11979 | ||
11980 | static void | |
fba45db2 | 11981 | tcatch_command (char *arg, int from_tty) |
c906108c | 11982 | { |
44feb3ce | 11983 | error (_("Catch requires an event name.")); |
c906108c SS |
11984 | } |
11985 | ||
8a2c437b TT |
11986 | /* A qsort comparison function that sorts breakpoints in order. */ |
11987 | ||
11988 | static int | |
11989 | compare_breakpoints (const void *a, const void *b) | |
11990 | { | |
9a3c8263 | 11991 | const breakpoint_p *ba = (const breakpoint_p *) a; |
8a2c437b | 11992 | uintptr_t ua = (uintptr_t) *ba; |
9a3c8263 | 11993 | const breakpoint_p *bb = (const breakpoint_p *) b; |
8a2c437b TT |
11994 | uintptr_t ub = (uintptr_t) *bb; |
11995 | ||
11996 | if ((*ba)->number < (*bb)->number) | |
11997 | return -1; | |
11998 | else if ((*ba)->number > (*bb)->number) | |
11999 | return 1; | |
12000 | ||
12001 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
12002 | the number 0. */ | |
12003 | if (ua < ub) | |
12004 | return -1; | |
94b0e70d | 12005 | return ua > ub ? 1 : 0; |
8a2c437b TT |
12006 | } |
12007 | ||
80f8a6eb | 12008 | /* Delete breakpoints by address or line. */ |
c906108c SS |
12009 | |
12010 | static void | |
fba45db2 | 12011 | clear_command (char *arg, int from_tty) |
c906108c | 12012 | { |
8a2c437b | 12013 | struct breakpoint *b, *prev; |
d6e956e5 VP |
12014 | VEC(breakpoint_p) *found = 0; |
12015 | int ix; | |
c906108c SS |
12016 | int default_match; |
12017 | struct symtabs_and_lines sals; | |
12018 | struct symtab_and_line sal; | |
c906108c | 12019 | int i; |
8a2c437b | 12020 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
12021 | |
12022 | if (arg) | |
12023 | { | |
39cf75f7 DE |
12024 | sals = decode_line_with_current_source (arg, |
12025 | (DECODE_LINE_FUNFIRSTLINE | |
12026 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 12027 | make_cleanup (xfree, sals.sals); |
c906108c SS |
12028 | default_match = 0; |
12029 | } | |
12030 | else | |
12031 | { | |
8d749320 | 12032 | sals.sals = XNEW (struct symtab_and_line); |
80f8a6eb | 12033 | make_cleanup (xfree, sals.sals); |
4a64f543 | 12034 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
12035 | |
12036 | /* Set sal's line, symtab, pc, and pspace to the values | |
12037 | corresponding to the last call to print_frame_info. If the | |
12038 | codepoint is not valid, this will set all the fields to 0. */ | |
12039 | get_last_displayed_sal (&sal); | |
c906108c | 12040 | if (sal.symtab == 0) |
8a3fe4f8 | 12041 | error (_("No source file specified.")); |
c906108c SS |
12042 | |
12043 | sals.sals[0] = sal; | |
12044 | sals.nelts = 1; | |
12045 | ||
12046 | default_match = 1; | |
12047 | } | |
12048 | ||
4a64f543 MS |
12049 | /* We don't call resolve_sal_pc here. That's not as bad as it |
12050 | seems, because all existing breakpoints typically have both | |
12051 | file/line and pc set. So, if clear is given file/line, we can | |
12052 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
12053 | |
12054 | We only support clearing given the address explicitly | |
12055 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 12056 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 12057 | due to optimization, all in one block. |
4a64f543 MS |
12058 | |
12059 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
12060 | PC corresponding to the same file:line, the breakpoint won't |
12061 | be cleared. We probably can still clear the breakpoint, but | |
12062 | since the other PC value is never presented to user, user | |
12063 | can only find it by guessing, and it does not seem important | |
12064 | to support that. */ | |
12065 | ||
4a64f543 MS |
12066 | /* For each line spec given, delete bps which correspond to it. Do |
12067 | it in two passes, solely to preserve the current behavior that | |
12068 | from_tty is forced true if we delete more than one | |
12069 | breakpoint. */ | |
c906108c | 12070 | |
80f8a6eb | 12071 | found = NULL; |
8a2c437b | 12072 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
12073 | for (i = 0; i < sals.nelts; i++) |
12074 | { | |
05cba821 JK |
12075 | const char *sal_fullname; |
12076 | ||
c906108c | 12077 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
12078 | If line given (pc == 0), clear all bpts on specified line. |
12079 | If defaulting, clear all bpts on default line | |
c906108c | 12080 | or at default pc. |
c5aa993b JM |
12081 | |
12082 | defaulting sal.pc != 0 tests to do | |
12083 | ||
12084 | 0 1 pc | |
12085 | 1 1 pc _and_ line | |
12086 | 0 0 line | |
12087 | 1 0 <can't happen> */ | |
c906108c SS |
12088 | |
12089 | sal = sals.sals[i]; | |
05cba821 JK |
12090 | sal_fullname = (sal.symtab == NULL |
12091 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 12092 | |
4a64f543 | 12093 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 12094 | ALL_BREAKPOINTS (b) |
c5aa993b | 12095 | { |
0d381245 | 12096 | int match = 0; |
4a64f543 | 12097 | /* Are we going to delete b? */ |
cc60f2e3 | 12098 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
12099 | { |
12100 | struct bp_location *loc = b->loc; | |
12101 | for (; loc; loc = loc->next) | |
12102 | { | |
f8eba3c6 TT |
12103 | /* If the user specified file:line, don't allow a PC |
12104 | match. This matches historical gdb behavior. */ | |
12105 | int pc_match = (!sal.explicit_line | |
12106 | && sal.pc | |
12107 | && (loc->pspace == sal.pspace) | |
12108 | && (loc->address == sal.pc) | |
12109 | && (!section_is_overlay (loc->section) | |
12110 | || loc->section == sal.section)); | |
4aac40c8 TT |
12111 | int line_match = 0; |
12112 | ||
12113 | if ((default_match || sal.explicit_line) | |
2f202fde | 12114 | && loc->symtab != NULL |
05cba821 | 12115 | && sal_fullname != NULL |
4aac40c8 | 12116 | && sal.pspace == loc->pspace |
05cba821 JK |
12117 | && loc->line_number == sal.line |
12118 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
12119 | sal_fullname) == 0) | |
12120 | line_match = 1; | |
4aac40c8 | 12121 | |
0d381245 VP |
12122 | if (pc_match || line_match) |
12123 | { | |
12124 | match = 1; | |
12125 | break; | |
12126 | } | |
12127 | } | |
12128 | } | |
12129 | ||
12130 | if (match) | |
d6e956e5 | 12131 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 12132 | } |
80f8a6eb | 12133 | } |
8a2c437b | 12134 | |
80f8a6eb | 12135 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 12136 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
12137 | { |
12138 | if (arg) | |
8a3fe4f8 | 12139 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 12140 | else |
8a3fe4f8 | 12141 | error (_("No breakpoint at this line.")); |
80f8a6eb | 12142 | } |
c906108c | 12143 | |
8a2c437b TT |
12144 | /* Remove duplicates from the vec. */ |
12145 | qsort (VEC_address (breakpoint_p, found), | |
12146 | VEC_length (breakpoint_p, found), | |
12147 | sizeof (breakpoint_p), | |
12148 | compare_breakpoints); | |
12149 | prev = VEC_index (breakpoint_p, found, 0); | |
12150 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
12151 | { | |
12152 | if (b == prev) | |
12153 | { | |
12154 | VEC_ordered_remove (breakpoint_p, found, ix); | |
12155 | --ix; | |
12156 | } | |
12157 | } | |
12158 | ||
d6e956e5 | 12159 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 12160 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 12161 | if (from_tty) |
a3f17187 | 12162 | { |
d6e956e5 | 12163 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
12164 | printf_unfiltered (_("Deleted breakpoint ")); |
12165 | else | |
12166 | printf_unfiltered (_("Deleted breakpoints ")); | |
12167 | } | |
d6e956e5 VP |
12168 | |
12169 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 12170 | { |
c5aa993b | 12171 | if (from_tty) |
d6e956e5 VP |
12172 | printf_unfiltered ("%d ", b->number); |
12173 | delete_breakpoint (b); | |
c906108c | 12174 | } |
80f8a6eb MS |
12175 | if (from_tty) |
12176 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
12177 | |
12178 | do_cleanups (cleanups); | |
c906108c SS |
12179 | } |
12180 | \f | |
12181 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
12182 | all breakpoints that are marked for deletion, whether hit or not. | |
12183 | This is called after any breakpoint is hit, or after errors. */ | |
12184 | ||
12185 | void | |
fba45db2 | 12186 | breakpoint_auto_delete (bpstat bs) |
c906108c | 12187 | { |
35df4500 | 12188 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12189 | |
12190 | for (; bs; bs = bs->next) | |
f431efe5 PA |
12191 | if (bs->breakpoint_at |
12192 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 12193 | && bs->stop) |
f431efe5 | 12194 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 12195 | |
35df4500 | 12196 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12197 | { |
b5de0fa7 | 12198 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
12199 | delete_breakpoint (b); |
12200 | } | |
c906108c SS |
12201 | } |
12202 | ||
4a64f543 MS |
12203 | /* A comparison function for bp_location AP and BP being interfaced to |
12204 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
12205 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 12206 | secondarily by ordering first permanent elements and |
4a64f543 | 12207 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 12208 | qsort being an unstable algorithm. */ |
876fa593 JK |
12209 | |
12210 | static int | |
494cfb0f | 12211 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 12212 | { |
9a3c8263 SM |
12213 | const struct bp_location *a = *(const struct bp_location **) ap; |
12214 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
12215 | |
12216 | if (a->address != b->address) | |
12217 | return (a->address > b->address) - (a->address < b->address); | |
12218 | ||
dea2aa5f LM |
12219 | /* Sort locations at the same address by their pspace number, keeping |
12220 | locations of the same inferior (in a multi-inferior environment) | |
12221 | grouped. */ | |
12222 | ||
12223 | if (a->pspace->num != b->pspace->num) | |
12224 | return ((a->pspace->num > b->pspace->num) | |
12225 | - (a->pspace->num < b->pspace->num)); | |
12226 | ||
876fa593 | 12227 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
12228 | if (a->permanent != b->permanent) |
12229 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 12230 | |
c56a97f9 JK |
12231 | /* Make the internal GDB representation stable across GDB runs |
12232 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12233 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12234 | |
12235 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12236 | return ((a->owner->number > b->owner->number) |
12237 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12238 | |
12239 | return (a > b) - (a < b); | |
12240 | } | |
12241 | ||
876fa593 | 12242 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12243 | bp_location_shadow_len_after_address_max according to the current |
12244 | content of the bp_location array. */ | |
f7545552 TT |
12245 | |
12246 | static void | |
876fa593 | 12247 | bp_location_target_extensions_update (void) |
f7545552 | 12248 | { |
876fa593 JK |
12249 | struct bp_location *bl, **blp_tmp; |
12250 | ||
12251 | bp_location_placed_address_before_address_max = 0; | |
12252 | bp_location_shadow_len_after_address_max = 0; | |
12253 | ||
12254 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12255 | { | |
12256 | CORE_ADDR start, end, addr; | |
12257 | ||
12258 | if (!bp_location_has_shadow (bl)) | |
12259 | continue; | |
12260 | ||
12261 | start = bl->target_info.placed_address; | |
12262 | end = start + bl->target_info.shadow_len; | |
12263 | ||
12264 | gdb_assert (bl->address >= start); | |
12265 | addr = bl->address - start; | |
12266 | if (addr > bp_location_placed_address_before_address_max) | |
12267 | bp_location_placed_address_before_address_max = addr; | |
12268 | ||
12269 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12270 | ||
12271 | gdb_assert (bl->address < end); | |
12272 | addr = end - bl->address; | |
12273 | if (addr > bp_location_shadow_len_after_address_max) | |
12274 | bp_location_shadow_len_after_address_max = addr; | |
12275 | } | |
f7545552 TT |
12276 | } |
12277 | ||
1e4d1764 YQ |
12278 | /* Download tracepoint locations if they haven't been. */ |
12279 | ||
12280 | static void | |
12281 | download_tracepoint_locations (void) | |
12282 | { | |
7ed2c994 | 12283 | struct breakpoint *b; |
1e4d1764 | 12284 | struct cleanup *old_chain; |
dd2e65cc | 12285 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 YQ |
12286 | |
12287 | old_chain = save_current_space_and_thread (); | |
12288 | ||
7ed2c994 | 12289 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12290 | { |
7ed2c994 | 12291 | struct bp_location *bl; |
1e4d1764 | 12292 | struct tracepoint *t; |
f2a8bc8a | 12293 | int bp_location_downloaded = 0; |
1e4d1764 | 12294 | |
7ed2c994 | 12295 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12296 | ? !may_insert_fast_tracepoints |
12297 | : !may_insert_tracepoints)) | |
12298 | continue; | |
12299 | ||
dd2e65cc YQ |
12300 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
12301 | { | |
12302 | if (target_can_download_tracepoint ()) | |
12303 | can_download_tracepoint = TRIBOOL_TRUE; | |
12304 | else | |
12305 | can_download_tracepoint = TRIBOOL_FALSE; | |
12306 | } | |
12307 | ||
12308 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
12309 | break; | |
12310 | ||
7ed2c994 YQ |
12311 | for (bl = b->loc; bl; bl = bl->next) |
12312 | { | |
12313 | /* In tracepoint, locations are _never_ duplicated, so | |
12314 | should_be_inserted is equivalent to | |
12315 | unduplicated_should_be_inserted. */ | |
12316 | if (!should_be_inserted (bl) || bl->inserted) | |
12317 | continue; | |
1e4d1764 | 12318 | |
7ed2c994 | 12319 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12320 | |
7ed2c994 | 12321 | target_download_tracepoint (bl); |
1e4d1764 | 12322 | |
7ed2c994 | 12323 | bl->inserted = 1; |
f2a8bc8a | 12324 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12325 | } |
12326 | t = (struct tracepoint *) b; | |
12327 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12328 | if (bp_location_downloaded) |
12329 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12330 | } |
12331 | ||
12332 | do_cleanups (old_chain); | |
12333 | } | |
12334 | ||
934709f0 PW |
12335 | /* Swap the insertion/duplication state between two locations. */ |
12336 | ||
12337 | static void | |
12338 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12339 | { | |
12340 | const int left_inserted = left->inserted; | |
12341 | const int left_duplicate = left->duplicate; | |
b775012e | 12342 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12343 | const struct bp_target_info left_target_info = left->target_info; |
12344 | ||
1e4d1764 YQ |
12345 | /* Locations of tracepoints can never be duplicated. */ |
12346 | if (is_tracepoint (left->owner)) | |
12347 | gdb_assert (!left->duplicate); | |
12348 | if (is_tracepoint (right->owner)) | |
12349 | gdb_assert (!right->duplicate); | |
12350 | ||
934709f0 PW |
12351 | left->inserted = right->inserted; |
12352 | left->duplicate = right->duplicate; | |
b775012e | 12353 | left->needs_update = right->needs_update; |
934709f0 PW |
12354 | left->target_info = right->target_info; |
12355 | right->inserted = left_inserted; | |
12356 | right->duplicate = left_duplicate; | |
b775012e | 12357 | right->needs_update = left_needs_update; |
934709f0 PW |
12358 | right->target_info = left_target_info; |
12359 | } | |
12360 | ||
b775012e LM |
12361 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12362 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12363 | conditions on the target's side. Such conditions need to be updated on | |
12364 | the target. */ | |
12365 | ||
12366 | static void | |
12367 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12368 | { | |
12369 | struct bp_location **locp = NULL, **loc2p; | |
12370 | struct bp_location *loc; | |
12371 | CORE_ADDR address = 0; | |
12372 | int pspace_num; | |
12373 | ||
12374 | address = bl->address; | |
12375 | pspace_num = bl->pspace->num; | |
12376 | ||
12377 | /* This is only meaningful if the target is | |
12378 | evaluating conditions and if the user has | |
12379 | opted for condition evaluation on the target's | |
12380 | side. */ | |
12381 | if (gdb_evaluates_breakpoint_condition_p () | |
12382 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12383 | return; | |
12384 | ||
12385 | /* Flag all breakpoint locations with this address and | |
12386 | the same program space as the location | |
12387 | as "its condition has changed". We need to | |
12388 | update the conditions on the target's side. */ | |
12389 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12390 | { | |
12391 | loc = *loc2p; | |
12392 | ||
12393 | if (!is_breakpoint (loc->owner) | |
12394 | || pspace_num != loc->pspace->num) | |
12395 | continue; | |
12396 | ||
12397 | /* Flag the location appropriately. We use a different state to | |
12398 | let everyone know that we already updated the set of locations | |
12399 | with addr bl->address and program space bl->pspace. This is so | |
12400 | we don't have to keep calling these functions just to mark locations | |
12401 | that have already been marked. */ | |
12402 | loc->condition_changed = condition_updated; | |
12403 | ||
12404 | /* Free the agent expression bytecode as well. We will compute | |
12405 | it later on. */ | |
833177a4 | 12406 | loc->cond_bytecode.reset (); |
b775012e LM |
12407 | } |
12408 | } | |
44702360 PA |
12409 | /* Called whether new breakpoints are created, or existing breakpoints |
12410 | deleted, to update the global location list and recompute which | |
12411 | locations are duplicate of which. | |
b775012e | 12412 | |
04086b45 PA |
12413 | The INSERT_MODE flag determines whether locations may not, may, or |
12414 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
12415 | info. */ | |
b60e7edf | 12416 | |
0d381245 | 12417 | static void |
44702360 | 12418 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 12419 | { |
74960c60 | 12420 | struct breakpoint *b; |
876fa593 | 12421 | struct bp_location **locp, *loc; |
f7545552 | 12422 | struct cleanup *cleanups; |
b775012e LM |
12423 | /* Last breakpoint location address that was marked for update. */ |
12424 | CORE_ADDR last_addr = 0; | |
12425 | /* Last breakpoint location program space that was marked for update. */ | |
12426 | int last_pspace_num = -1; | |
f7545552 | 12427 | |
2d134ed3 PA |
12428 | /* Used in the duplicates detection below. When iterating over all |
12429 | bp_locations, points to the first bp_location of a given address. | |
12430 | Breakpoints and watchpoints of different types are never | |
12431 | duplicates of each other. Keep one pointer for each type of | |
12432 | breakpoint/watchpoint, so we only need to loop over all locations | |
12433 | once. */ | |
12434 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12435 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12436 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12437 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12438 | |
4a64f543 MS |
12439 | /* Saved former bp_location array which we compare against the newly |
12440 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12441 | struct bp_location **old_location, **old_locp; |
12442 | unsigned old_location_count; | |
12443 | ||
12444 | old_location = bp_location; | |
12445 | old_location_count = bp_location_count; | |
12446 | bp_location = NULL; | |
12447 | bp_location_count = 0; | |
12448 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12449 | |
74960c60 | 12450 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12451 | for (loc = b->loc; loc; loc = loc->next) |
12452 | bp_location_count++; | |
12453 | ||
8d749320 | 12454 | bp_location = XNEWVEC (struct bp_location *, bp_location_count); |
876fa593 JK |
12455 | locp = bp_location; |
12456 | ALL_BREAKPOINTS (b) | |
12457 | for (loc = b->loc; loc; loc = loc->next) | |
12458 | *locp++ = loc; | |
12459 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12460 | bp_location_compare); |
876fa593 JK |
12461 | |
12462 | bp_location_target_extensions_update (); | |
74960c60 | 12463 | |
4a64f543 MS |
12464 | /* Identify bp_location instances that are no longer present in the |
12465 | new list, and therefore should be freed. Note that it's not | |
12466 | necessary that those locations should be removed from inferior -- | |
12467 | if there's another location at the same address (previously | |
12468 | marked as duplicate), we don't need to remove/insert the | |
12469 | location. | |
876fa593 | 12470 | |
4a64f543 MS |
12471 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12472 | and former bp_location array state respectively. */ | |
876fa593 JK |
12473 | |
12474 | locp = bp_location; | |
12475 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12476 | old_locp++) | |
74960c60 | 12477 | { |
876fa593 | 12478 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12479 | struct bp_location **loc2p; |
876fa593 | 12480 | |
e5dd4106 | 12481 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12482 | not, we have to free it. */ |
c7d46a38 | 12483 | int found_object = 0; |
20874c92 VP |
12484 | /* Tells if the location should remain inserted in the target. */ |
12485 | int keep_in_target = 0; | |
12486 | int removed = 0; | |
876fa593 | 12487 | |
4a64f543 MS |
12488 | /* Skip LOCP entries which will definitely never be needed. |
12489 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12490 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12491 | && (*locp)->address < old_loc->address) |
876fa593 | 12492 | locp++; |
c7d46a38 PA |
12493 | |
12494 | for (loc2p = locp; | |
12495 | (loc2p < bp_location + bp_location_count | |
12496 | && (*loc2p)->address == old_loc->address); | |
12497 | loc2p++) | |
12498 | { | |
b775012e LM |
12499 | /* Check if this is a new/duplicated location or a duplicated |
12500 | location that had its condition modified. If so, we want to send | |
12501 | its condition to the target if evaluation of conditions is taking | |
12502 | place there. */ | |
12503 | if ((*loc2p)->condition_changed == condition_modified | |
12504 | && (last_addr != old_loc->address | |
12505 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12506 | { |
b775012e LM |
12507 | force_breakpoint_reinsertion (*loc2p); |
12508 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12509 | } |
b775012e LM |
12510 | |
12511 | if (*loc2p == old_loc) | |
12512 | found_object = 1; | |
c7d46a38 | 12513 | } |
74960c60 | 12514 | |
b775012e LM |
12515 | /* We have already handled this address, update it so that we don't |
12516 | have to go through updates again. */ | |
12517 | last_addr = old_loc->address; | |
12518 | ||
12519 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12520 | if (!found_object) | |
12521 | force_breakpoint_reinsertion (old_loc); | |
12522 | ||
4a64f543 MS |
12523 | /* If this location is no longer present, and inserted, look if |
12524 | there's maybe a new location at the same address. If so, | |
12525 | mark that one inserted, and don't remove this one. This is | |
12526 | needed so that we don't have a time window where a breakpoint | |
12527 | at certain location is not inserted. */ | |
74960c60 | 12528 | |
876fa593 | 12529 | if (old_loc->inserted) |
0d381245 | 12530 | { |
4a64f543 MS |
12531 | /* If the location is inserted now, we might have to remove |
12532 | it. */ | |
74960c60 | 12533 | |
876fa593 | 12534 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12535 | { |
4a64f543 MS |
12536 | /* The location is still present in the location list, |
12537 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12538 | keep_in_target = 1; |
74960c60 VP |
12539 | } |
12540 | else | |
12541 | { | |
b775012e LM |
12542 | /* This location still exists, but it won't be kept in the |
12543 | target since it may have been disabled. We proceed to | |
12544 | remove its target-side condition. */ | |
12545 | ||
4a64f543 MS |
12546 | /* The location is either no longer present, or got |
12547 | disabled. See if there's another location at the | |
12548 | same address, in which case we don't need to remove | |
12549 | this one from the target. */ | |
876fa593 | 12550 | |
2bdf28a0 | 12551 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12552 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12553 | { | |
876fa593 | 12554 | for (loc2p = locp; |
c7d46a38 PA |
12555 | (loc2p < bp_location + bp_location_count |
12556 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12557 | loc2p++) |
12558 | { | |
12559 | struct bp_location *loc2 = *loc2p; | |
12560 | ||
2d134ed3 | 12561 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12562 | { |
85d721b8 PA |
12563 | /* Read watchpoint locations are switched to |
12564 | access watchpoints, if the former are not | |
12565 | supported, but the latter are. */ | |
12566 | if (is_hardware_watchpoint (old_loc->owner)) | |
12567 | { | |
12568 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12569 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12570 | } | |
12571 | ||
934709f0 PW |
12572 | /* loc2 is a duplicated location. We need to check |
12573 | if it should be inserted in case it will be | |
12574 | unduplicated. */ | |
12575 | if (loc2 != old_loc | |
12576 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12577 | { |
934709f0 | 12578 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12579 | keep_in_target = 1; |
12580 | break; | |
12581 | } | |
876fa593 JK |
12582 | } |
12583 | } | |
12584 | } | |
74960c60 VP |
12585 | } |
12586 | ||
20874c92 VP |
12587 | if (!keep_in_target) |
12588 | { | |
834c0d03 | 12589 | if (remove_breakpoint (old_loc)) |
20874c92 | 12590 | { |
4a64f543 MS |
12591 | /* This is just about all we can do. We could keep |
12592 | this location on the global list, and try to | |
12593 | remove it next time, but there's no particular | |
12594 | reason why we will succeed next time. | |
20874c92 | 12595 | |
4a64f543 MS |
12596 | Note that at this point, old_loc->owner is still |
12597 | valid, as delete_breakpoint frees the breakpoint | |
12598 | only after calling us. */ | |
3e43a32a MS |
12599 | printf_filtered (_("warning: Error removing " |
12600 | "breakpoint %d\n"), | |
876fa593 | 12601 | old_loc->owner->number); |
20874c92 VP |
12602 | } |
12603 | removed = 1; | |
12604 | } | |
0d381245 | 12605 | } |
74960c60 VP |
12606 | |
12607 | if (!found_object) | |
1c5cfe86 | 12608 | { |
fbea99ea | 12609 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12610 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12611 | { |
db82e815 PA |
12612 | /* This location was removed from the target. In |
12613 | non-stop mode, a race condition is possible where | |
12614 | we've removed a breakpoint, but stop events for that | |
12615 | breakpoint are already queued and will arrive later. | |
12616 | We apply an heuristic to be able to distinguish such | |
12617 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12618 | breakpoint location for a bit, and will retire it | |
12619 | after we see some number of events. The theory here | |
12620 | is that reporting of events should, "on the average", | |
12621 | be fair, so after a while we'll see events from all | |
12622 | threads that have anything of interest, and no longer | |
12623 | need to keep this breakpoint location around. We | |
12624 | don't hold locations forever so to reduce chances of | |
12625 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12626 | SIGTRAP. | |
12627 | ||
12628 | The heuristic failing can be disastrous on | |
12629 | decr_pc_after_break targets. | |
12630 | ||
12631 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12632 | if we fail to recognize a late breakpoint SIGTRAP, | |
12633 | because events_till_retirement has reached 0 too | |
12634 | soon, we'll fail to do the PC adjustment, and report | |
12635 | a random SIGTRAP to the user. When the user resumes | |
12636 | the inferior, it will most likely immediately crash | |
2dec564e | 12637 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12638 | corrupted, because of being resumed e.g., in the |
12639 | middle of a multi-byte instruction, or skipped a | |
12640 | one-byte instruction. This was actually seen happen | |
12641 | on native x86-linux, and should be less rare on | |
12642 | targets that do not support new thread events, like | |
12643 | remote, due to the heuristic depending on | |
12644 | thread_count. | |
12645 | ||
12646 | Mistaking a random SIGTRAP for a breakpoint trap | |
12647 | causes similar symptoms (PC adjustment applied when | |
12648 | it shouldn't), but then again, playing with SIGTRAPs | |
12649 | behind the debugger's back is asking for trouble. | |
12650 | ||
12651 | Since hardware watchpoint traps are always | |
12652 | distinguishable from other traps, so we don't need to | |
12653 | apply keep hardware watchpoint moribund locations | |
12654 | around. We simply always ignore hardware watchpoint | |
12655 | traps we can no longer explain. */ | |
12656 | ||
876fa593 JK |
12657 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12658 | old_loc->owner = NULL; | |
20874c92 | 12659 | |
876fa593 | 12660 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12661 | } |
12662 | else | |
f431efe5 PA |
12663 | { |
12664 | old_loc->owner = NULL; | |
12665 | decref_bp_location (&old_loc); | |
12666 | } | |
20874c92 | 12667 | } |
74960c60 | 12668 | } |
1c5cfe86 | 12669 | |
348d480f PA |
12670 | /* Rescan breakpoints at the same address and section, marking the |
12671 | first one as "first" and any others as "duplicates". This is so | |
12672 | that the bpt instruction is only inserted once. If we have a | |
12673 | permanent breakpoint at the same place as BPT, make that one the | |
12674 | official one, and the rest as duplicates. Permanent breakpoints | |
12675 | are sorted first for the same address. | |
12676 | ||
12677 | Do the same for hardware watchpoints, but also considering the | |
12678 | watchpoint's type (regular/access/read) and length. */ | |
12679 | ||
12680 | bp_loc_first = NULL; | |
12681 | wp_loc_first = NULL; | |
12682 | awp_loc_first = NULL; | |
12683 | rwp_loc_first = NULL; | |
12684 | ALL_BP_LOCATIONS (loc, locp) | |
12685 | { | |
12686 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12687 | non-NULL. */ | |
348d480f | 12688 | struct bp_location **loc_first_p; |
d3fbdd86 | 12689 | b = loc->owner; |
348d480f | 12690 | |
6f380991 | 12691 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12692 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12693 | /* Don't detect duplicate for tracepoint locations because they are |
12694 | never duplicated. See the comments in field `duplicate' of | |
12695 | `struct bp_location'. */ | |
348d480f | 12696 | || is_tracepoint (b)) |
b775012e LM |
12697 | { |
12698 | /* Clear the condition modification flag. */ | |
12699 | loc->condition_changed = condition_unchanged; | |
12700 | continue; | |
12701 | } | |
348d480f | 12702 | |
348d480f PA |
12703 | if (b->type == bp_hardware_watchpoint) |
12704 | loc_first_p = &wp_loc_first; | |
12705 | else if (b->type == bp_read_watchpoint) | |
12706 | loc_first_p = &rwp_loc_first; | |
12707 | else if (b->type == bp_access_watchpoint) | |
12708 | loc_first_p = &awp_loc_first; | |
12709 | else | |
12710 | loc_first_p = &bp_loc_first; | |
12711 | ||
12712 | if (*loc_first_p == NULL | |
12713 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12714 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12715 | { | |
12716 | *loc_first_p = loc; | |
12717 | loc->duplicate = 0; | |
b775012e LM |
12718 | |
12719 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12720 | { | |
12721 | loc->needs_update = 1; | |
12722 | /* Clear the condition modification flag. */ | |
12723 | loc->condition_changed = condition_unchanged; | |
12724 | } | |
348d480f PA |
12725 | continue; |
12726 | } | |
12727 | ||
934709f0 PW |
12728 | |
12729 | /* This and the above ensure the invariant that the first location | |
12730 | is not duplicated, and is the inserted one. | |
12731 | All following are marked as duplicated, and are not inserted. */ | |
12732 | if (loc->inserted) | |
12733 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12734 | loc->duplicate = 1; |
12735 | ||
b775012e LM |
12736 | /* Clear the condition modification flag. */ |
12737 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12738 | } |
12739 | ||
a25a5a45 | 12740 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12741 | { |
04086b45 | 12742 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12743 | insert_breakpoint_locations (); |
12744 | else | |
12745 | { | |
44702360 PA |
12746 | /* Even though the caller told us to not insert new |
12747 | locations, we may still need to update conditions on the | |
12748 | target's side of breakpoints that were already inserted | |
12749 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12750 | only update conditions for locations that are marked |
12751 | "needs_update". */ | |
12752 | update_inserted_breakpoint_locations (); | |
12753 | } | |
12754 | } | |
348d480f | 12755 | |
04086b45 | 12756 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 YQ |
12757 | download_tracepoint_locations (); |
12758 | ||
348d480f PA |
12759 | do_cleanups (cleanups); |
12760 | } | |
12761 | ||
12762 | void | |
12763 | breakpoint_retire_moribund (void) | |
12764 | { | |
12765 | struct bp_location *loc; | |
12766 | int ix; | |
12767 | ||
12768 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12769 | if (--(loc->events_till_retirement) == 0) | |
12770 | { | |
12771 | decref_bp_location (&loc); | |
12772 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12773 | --ix; | |
12774 | } | |
12775 | } | |
12776 | ||
12777 | static void | |
44702360 | 12778 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12779 | { |
348d480f | 12780 | |
492d29ea PA |
12781 | TRY |
12782 | { | |
12783 | update_global_location_list (insert_mode); | |
12784 | } | |
12785 | CATCH (e, RETURN_MASK_ERROR) | |
12786 | { | |
12787 | } | |
12788 | END_CATCH | |
348d480f PA |
12789 | } |
12790 | ||
12791 | /* Clear BKP from a BPS. */ | |
12792 | ||
12793 | static void | |
12794 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12795 | { | |
12796 | bpstat bs; | |
12797 | ||
12798 | for (bs = bps; bs; bs = bs->next) | |
12799 | if (bs->breakpoint_at == bpt) | |
12800 | { | |
12801 | bs->breakpoint_at = NULL; | |
12802 | bs->old_val = NULL; | |
12803 | /* bs->commands will be freed later. */ | |
12804 | } | |
12805 | } | |
12806 | ||
12807 | /* Callback for iterate_over_threads. */ | |
12808 | static int | |
12809 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12810 | { | |
9a3c8263 | 12811 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12812 | |
12813 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12814 | return 0; | |
12815 | } | |
12816 | ||
12817 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12818 | callbacks. */ | |
12819 | ||
12820 | static void | |
12821 | say_where (struct breakpoint *b) | |
12822 | { | |
12823 | struct value_print_options opts; | |
12824 | ||
12825 | get_user_print_options (&opts); | |
12826 | ||
12827 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12828 | single string. */ | |
12829 | if (b->loc == NULL) | |
12830 | { | |
f00aae0f KS |
12831 | /* For pending locations, the output differs slightly based |
12832 | on b->extra_string. If this is non-NULL, it contains either | |
12833 | a condition or dprintf arguments. */ | |
12834 | if (b->extra_string == NULL) | |
12835 | { | |
12836 | printf_filtered (_(" (%s) pending."), | |
12837 | event_location_to_string (b->location)); | |
12838 | } | |
12839 | else if (b->type == bp_dprintf) | |
12840 | { | |
12841 | printf_filtered (_(" (%s,%s) pending."), | |
12842 | event_location_to_string (b->location), | |
12843 | b->extra_string); | |
12844 | } | |
12845 | else | |
12846 | { | |
12847 | printf_filtered (_(" (%s %s) pending."), | |
12848 | event_location_to_string (b->location), | |
12849 | b->extra_string); | |
12850 | } | |
348d480f PA |
12851 | } |
12852 | else | |
12853 | { | |
2f202fde | 12854 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12855 | { |
12856 | printf_filtered (" at "); | |
12857 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12858 | gdb_stdout); | |
12859 | } | |
2f202fde | 12860 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12861 | { |
12862 | /* If there is a single location, we can print the location | |
12863 | more nicely. */ | |
12864 | if (b->loc->next == NULL) | |
12865 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12866 | symtab_to_filename_for_display (b->loc->symtab), |
12867 | b->loc->line_number); | |
f8eba3c6 TT |
12868 | else |
12869 | /* This is not ideal, but each location may have a | |
12870 | different file name, and this at least reflects the | |
12871 | real situation somewhat. */ | |
f00aae0f KS |
12872 | printf_filtered (": %s.", |
12873 | event_location_to_string (b->location)); | |
f8eba3c6 | 12874 | } |
348d480f PA |
12875 | |
12876 | if (b->loc->next) | |
12877 | { | |
12878 | struct bp_location *loc = b->loc; | |
12879 | int n = 0; | |
12880 | for (; loc; loc = loc->next) | |
12881 | ++n; | |
12882 | printf_filtered (" (%d locations)", n); | |
12883 | } | |
12884 | } | |
12885 | } | |
12886 | ||
348d480f PA |
12887 | /* Default bp_location_ops methods. */ |
12888 | ||
12889 | static void | |
12890 | bp_location_dtor (struct bp_location *self) | |
12891 | { | |
348d480f PA |
12892 | xfree (self->function_name); |
12893 | } | |
12894 | ||
12895 | static const struct bp_location_ops bp_location_ops = | |
12896 | { | |
12897 | bp_location_dtor | |
12898 | }; | |
12899 | ||
2060206e PA |
12900 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12901 | inherit from. */ | |
348d480f | 12902 | |
2060206e PA |
12903 | static void |
12904 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12905 | { |
12906 | decref_counted_command_line (&self->commands); | |
12907 | xfree (self->cond_string); | |
fb81d016 | 12908 | xfree (self->extra_string); |
f8eba3c6 | 12909 | xfree (self->filter); |
f00aae0f KS |
12910 | delete_event_location (self->location); |
12911 | delete_event_location (self->location_range_end); | |
348d480f PA |
12912 | } |
12913 | ||
2060206e PA |
12914 | static struct bp_location * |
12915 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12916 | { |
12917 | struct bp_location *loc; | |
12918 | ||
4d01a485 | 12919 | loc = new struct bp_location (); |
348d480f PA |
12920 | init_bp_location (loc, &bp_location_ops, self); |
12921 | return loc; | |
12922 | } | |
12923 | ||
2060206e PA |
12924 | static void |
12925 | base_breakpoint_re_set (struct breakpoint *b) | |
12926 | { | |
12927 | /* Nothing to re-set. */ | |
12928 | } | |
12929 | ||
12930 | #define internal_error_pure_virtual_called() \ | |
12931 | gdb_assert_not_reached ("pure virtual function called") | |
12932 | ||
12933 | static int | |
12934 | base_breakpoint_insert_location (struct bp_location *bl) | |
12935 | { | |
12936 | internal_error_pure_virtual_called (); | |
12937 | } | |
12938 | ||
12939 | static int | |
73971819 PA |
12940 | base_breakpoint_remove_location (struct bp_location *bl, |
12941 | enum remove_bp_reason reason) | |
2060206e PA |
12942 | { |
12943 | internal_error_pure_virtual_called (); | |
12944 | } | |
12945 | ||
12946 | static int | |
12947 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12948 | struct address_space *aspace, | |
09ac7c10 TT |
12949 | CORE_ADDR bp_addr, |
12950 | const struct target_waitstatus *ws) | |
2060206e PA |
12951 | { |
12952 | internal_error_pure_virtual_called (); | |
12953 | } | |
12954 | ||
12955 | static void | |
12956 | base_breakpoint_check_status (bpstat bs) | |
12957 | { | |
12958 | /* Always stop. */ | |
12959 | } | |
12960 | ||
12961 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12962 | errors. */ | |
12963 | ||
12964 | static int | |
12965 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12966 | { | |
12967 | internal_error_pure_virtual_called (); | |
12968 | } | |
12969 | ||
12970 | /* A "resources_needed" breakpoint_ops method that just internal | |
12971 | errors. */ | |
12972 | ||
12973 | static int | |
12974 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12975 | { | |
12976 | internal_error_pure_virtual_called (); | |
12977 | } | |
12978 | ||
12979 | static enum print_stop_action | |
12980 | base_breakpoint_print_it (bpstat bs) | |
12981 | { | |
12982 | internal_error_pure_virtual_called (); | |
12983 | } | |
12984 | ||
12985 | static void | |
12986 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12987 | struct ui_out *uiout) | |
12988 | { | |
12989 | /* nothing */ | |
12990 | } | |
12991 | ||
12992 | static void | |
12993 | base_breakpoint_print_mention (struct breakpoint *b) | |
12994 | { | |
12995 | internal_error_pure_virtual_called (); | |
12996 | } | |
12997 | ||
12998 | static void | |
12999 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
13000 | { | |
13001 | internal_error_pure_virtual_called (); | |
13002 | } | |
13003 | ||
983af33b | 13004 | static void |
f00aae0f KS |
13005 | base_breakpoint_create_sals_from_location |
13006 | (const struct event_location *location, | |
13007 | struct linespec_result *canonical, | |
13008 | enum bptype type_wanted) | |
983af33b SDJ |
13009 | { |
13010 | internal_error_pure_virtual_called (); | |
13011 | } | |
13012 | ||
13013 | static void | |
13014 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13015 | struct linespec_result *c, | |
983af33b | 13016 | char *cond_string, |
e7e0cddf | 13017 | char *extra_string, |
983af33b SDJ |
13018 | enum bptype type_wanted, |
13019 | enum bpdisp disposition, | |
13020 | int thread, | |
13021 | int task, int ignore_count, | |
13022 | const struct breakpoint_ops *o, | |
13023 | int from_tty, int enabled, | |
44f238bb | 13024 | int internal, unsigned flags) |
983af33b SDJ |
13025 | { |
13026 | internal_error_pure_virtual_called (); | |
13027 | } | |
13028 | ||
13029 | static void | |
f00aae0f KS |
13030 | base_breakpoint_decode_location (struct breakpoint *b, |
13031 | const struct event_location *location, | |
c2f4122d | 13032 | struct program_space *search_pspace, |
983af33b SDJ |
13033 | struct symtabs_and_lines *sals) |
13034 | { | |
13035 | internal_error_pure_virtual_called (); | |
13036 | } | |
13037 | ||
ab04a2af TT |
13038 | /* The default 'explains_signal' method. */ |
13039 | ||
47591c29 | 13040 | static int |
427cd150 | 13041 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 13042 | { |
47591c29 | 13043 | return 1; |
ab04a2af TT |
13044 | } |
13045 | ||
9d6e6e84 HZ |
13046 | /* The default "after_condition_true" method. */ |
13047 | ||
13048 | static void | |
13049 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
13050 | { | |
13051 | /* Nothing to do. */ | |
13052 | } | |
13053 | ||
ab04a2af | 13054 | struct breakpoint_ops base_breakpoint_ops = |
2060206e PA |
13055 | { |
13056 | base_breakpoint_dtor, | |
13057 | base_breakpoint_allocate_location, | |
13058 | base_breakpoint_re_set, | |
13059 | base_breakpoint_insert_location, | |
13060 | base_breakpoint_remove_location, | |
13061 | base_breakpoint_breakpoint_hit, | |
13062 | base_breakpoint_check_status, | |
13063 | base_breakpoint_resources_needed, | |
13064 | base_breakpoint_works_in_software_mode, | |
13065 | base_breakpoint_print_it, | |
13066 | NULL, | |
13067 | base_breakpoint_print_one_detail, | |
13068 | base_breakpoint_print_mention, | |
983af33b | 13069 | base_breakpoint_print_recreate, |
5f700d83 | 13070 | base_breakpoint_create_sals_from_location, |
983af33b | 13071 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 13072 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
13073 | base_breakpoint_explains_signal, |
13074 | base_breakpoint_after_condition_true, | |
2060206e PA |
13075 | }; |
13076 | ||
13077 | /* Default breakpoint_ops methods. */ | |
13078 | ||
13079 | static void | |
348d480f PA |
13080 | bkpt_re_set (struct breakpoint *b) |
13081 | { | |
06edf0c0 | 13082 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 13083 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 13084 | { |
f00aae0f | 13085 | /* Anything without a location can't be re-set. */ |
348d480f | 13086 | delete_breakpoint (b); |
06edf0c0 | 13087 | return; |
348d480f | 13088 | } |
06edf0c0 PA |
13089 | |
13090 | breakpoint_re_set_default (b); | |
348d480f PA |
13091 | } |
13092 | ||
2060206e | 13093 | static int |
348d480f PA |
13094 | bkpt_insert_location (struct bp_location *bl) |
13095 | { | |
cd6c3b4f YQ |
13096 | CORE_ADDR addr = bl->target_info.reqstd_address; |
13097 | ||
579c6ad9 | 13098 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
13099 | bl->target_info.placed_address = addr; |
13100 | ||
348d480f | 13101 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 13102 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 13103 | else |
7c16b83e | 13104 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
13105 | } |
13106 | ||
2060206e | 13107 | static int |
73971819 | 13108 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
13109 | { |
13110 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
13111 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
13112 | else | |
73971819 | 13113 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
13114 | } |
13115 | ||
2060206e | 13116 | static int |
348d480f | 13117 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
13118 | struct address_space *aspace, CORE_ADDR bp_addr, |
13119 | const struct target_waitstatus *ws) | |
348d480f | 13120 | { |
09ac7c10 | 13121 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 13122 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
13123 | return 0; |
13124 | ||
348d480f PA |
13125 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
13126 | aspace, bp_addr)) | |
13127 | return 0; | |
13128 | ||
13129 | if (overlay_debugging /* unmapped overlay section */ | |
13130 | && section_is_overlay (bl->section) | |
13131 | && !section_is_mapped (bl->section)) | |
13132 | return 0; | |
13133 | ||
13134 | return 1; | |
13135 | } | |
13136 | ||
cd1608cc PA |
13137 | static int |
13138 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
13139 | struct address_space *aspace, CORE_ADDR bp_addr, | |
13140 | const struct target_waitstatus *ws) | |
13141 | { | |
13142 | if (dprintf_style == dprintf_style_agent | |
13143 | && target_can_run_breakpoint_commands ()) | |
13144 | { | |
13145 | /* An agent-style dprintf never causes a stop. If we see a trap | |
13146 | for this address it must be for a breakpoint that happens to | |
13147 | be set at the same address. */ | |
13148 | return 0; | |
13149 | } | |
13150 | ||
13151 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
13152 | } | |
13153 | ||
2060206e | 13154 | static int |
348d480f PA |
13155 | bkpt_resources_needed (const struct bp_location *bl) |
13156 | { | |
13157 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
13158 | ||
13159 | return 1; | |
13160 | } | |
13161 | ||
2060206e | 13162 | static enum print_stop_action |
348d480f PA |
13163 | bkpt_print_it (bpstat bs) |
13164 | { | |
348d480f PA |
13165 | struct breakpoint *b; |
13166 | const struct bp_location *bl; | |
001c8c33 | 13167 | int bp_temp; |
79a45e25 | 13168 | struct ui_out *uiout = current_uiout; |
348d480f PA |
13169 | |
13170 | gdb_assert (bs->bp_location_at != NULL); | |
13171 | ||
13172 | bl = bs->bp_location_at; | |
13173 | b = bs->breakpoint_at; | |
13174 | ||
001c8c33 PA |
13175 | bp_temp = b->disposition == disp_del; |
13176 | if (bl->address != bl->requested_address) | |
13177 | breakpoint_adjustment_warning (bl->requested_address, | |
13178 | bl->address, | |
13179 | b->number, 1); | |
13180 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
13181 | maybe_print_thread_hit_breakpoint (uiout); |
13182 | ||
001c8c33 | 13183 | if (bp_temp) |
f303dbd6 | 13184 | ui_out_text (uiout, "Temporary breakpoint "); |
001c8c33 | 13185 | else |
f303dbd6 | 13186 | ui_out_text (uiout, "Breakpoint "); |
001c8c33 | 13187 | if (ui_out_is_mi_like_p (uiout)) |
348d480f | 13188 | { |
001c8c33 PA |
13189 | ui_out_field_string (uiout, "reason", |
13190 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
13191 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 13192 | } |
001c8c33 PA |
13193 | ui_out_field_int (uiout, "bkptno", b->number); |
13194 | ui_out_text (uiout, ", "); | |
06edf0c0 | 13195 | |
001c8c33 | 13196 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
13197 | } |
13198 | ||
2060206e | 13199 | static void |
06edf0c0 PA |
13200 | bkpt_print_mention (struct breakpoint *b) |
13201 | { | |
79a45e25 | 13202 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
13203 | return; |
13204 | ||
13205 | switch (b->type) | |
13206 | { | |
13207 | case bp_breakpoint: | |
13208 | case bp_gnu_ifunc_resolver: | |
13209 | if (b->disposition == disp_del) | |
13210 | printf_filtered (_("Temporary breakpoint")); | |
13211 | else | |
13212 | printf_filtered (_("Breakpoint")); | |
13213 | printf_filtered (_(" %d"), b->number); | |
13214 | if (b->type == bp_gnu_ifunc_resolver) | |
13215 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
13216 | break; | |
13217 | case bp_hardware_breakpoint: | |
13218 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
13219 | break; | |
e7e0cddf SS |
13220 | case bp_dprintf: |
13221 | printf_filtered (_("Dprintf %d"), b->number); | |
13222 | break; | |
06edf0c0 PA |
13223 | } |
13224 | ||
13225 | say_where (b); | |
13226 | } | |
13227 | ||
2060206e | 13228 | static void |
06edf0c0 PA |
13229 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
13230 | { | |
13231 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
13232 | fprintf_unfiltered (fp, "tbreak"); | |
13233 | else if (tp->type == bp_breakpoint) | |
13234 | fprintf_unfiltered (fp, "break"); | |
13235 | else if (tp->type == bp_hardware_breakpoint | |
13236 | && tp->disposition == disp_del) | |
13237 | fprintf_unfiltered (fp, "thbreak"); | |
13238 | else if (tp->type == bp_hardware_breakpoint) | |
13239 | fprintf_unfiltered (fp, "hbreak"); | |
13240 | else | |
13241 | internal_error (__FILE__, __LINE__, | |
13242 | _("unhandled breakpoint type %d"), (int) tp->type); | |
13243 | ||
f00aae0f KS |
13244 | fprintf_unfiltered (fp, " %s", |
13245 | event_location_to_string (tp->location)); | |
13246 | ||
13247 | /* Print out extra_string if this breakpoint is pending. It might | |
13248 | contain, for example, conditions that were set by the user. */ | |
13249 | if (tp->loc == NULL && tp->extra_string != NULL) | |
13250 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
13251 | ||
dd11a36c | 13252 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
13253 | } |
13254 | ||
983af33b | 13255 | static void |
f00aae0f KS |
13256 | bkpt_create_sals_from_location (const struct event_location *location, |
13257 | struct linespec_result *canonical, | |
13258 | enum bptype type_wanted) | |
983af33b | 13259 | { |
f00aae0f | 13260 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13261 | } |
13262 | ||
13263 | static void | |
13264 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13265 | struct linespec_result *canonical, | |
983af33b | 13266 | char *cond_string, |
e7e0cddf | 13267 | char *extra_string, |
983af33b SDJ |
13268 | enum bptype type_wanted, |
13269 | enum bpdisp disposition, | |
13270 | int thread, | |
13271 | int task, int ignore_count, | |
13272 | const struct breakpoint_ops *ops, | |
13273 | int from_tty, int enabled, | |
44f238bb | 13274 | int internal, unsigned flags) |
983af33b | 13275 | { |
023fa29b | 13276 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13277 | cond_string, extra_string, |
13278 | type_wanted, | |
983af33b SDJ |
13279 | disposition, thread, task, |
13280 | ignore_count, ops, from_tty, | |
44f238bb | 13281 | enabled, internal, flags); |
983af33b SDJ |
13282 | } |
13283 | ||
13284 | static void | |
f00aae0f KS |
13285 | bkpt_decode_location (struct breakpoint *b, |
13286 | const struct event_location *location, | |
c2f4122d | 13287 | struct program_space *search_pspace, |
983af33b SDJ |
13288 | struct symtabs_and_lines *sals) |
13289 | { | |
c2f4122d | 13290 | decode_location_default (b, location, search_pspace, sals); |
983af33b SDJ |
13291 | } |
13292 | ||
06edf0c0 PA |
13293 | /* Virtual table for internal breakpoints. */ |
13294 | ||
13295 | static void | |
13296 | internal_bkpt_re_set (struct breakpoint *b) | |
13297 | { | |
13298 | switch (b->type) | |
13299 | { | |
13300 | /* Delete overlay event and longjmp master breakpoints; they | |
13301 | will be reset later by breakpoint_re_set. */ | |
13302 | case bp_overlay_event: | |
13303 | case bp_longjmp_master: | |
13304 | case bp_std_terminate_master: | |
13305 | case bp_exception_master: | |
13306 | delete_breakpoint (b); | |
13307 | break; | |
13308 | ||
13309 | /* This breakpoint is special, it's set up when the inferior | |
13310 | starts and we really don't want to touch it. */ | |
13311 | case bp_shlib_event: | |
13312 | ||
13313 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13314 | it is set up, we do not want to touch it. */ | |
13315 | case bp_thread_event: | |
13316 | break; | |
13317 | } | |
13318 | } | |
13319 | ||
13320 | static void | |
13321 | internal_bkpt_check_status (bpstat bs) | |
13322 | { | |
a9b3a50f PA |
13323 | if (bs->breakpoint_at->type == bp_shlib_event) |
13324 | { | |
13325 | /* If requested, stop when the dynamic linker notifies GDB of | |
13326 | events. This allows the user to get control and place | |
13327 | breakpoints in initializer routines for dynamically loaded | |
13328 | objects (among other things). */ | |
13329 | bs->stop = stop_on_solib_events; | |
13330 | bs->print = stop_on_solib_events; | |
13331 | } | |
13332 | else | |
13333 | bs->stop = 0; | |
06edf0c0 PA |
13334 | } |
13335 | ||
13336 | static enum print_stop_action | |
13337 | internal_bkpt_print_it (bpstat bs) | |
13338 | { | |
06edf0c0 | 13339 | struct breakpoint *b; |
06edf0c0 | 13340 | |
06edf0c0 PA |
13341 | b = bs->breakpoint_at; |
13342 | ||
06edf0c0 PA |
13343 | switch (b->type) |
13344 | { | |
348d480f PA |
13345 | case bp_shlib_event: |
13346 | /* Did we stop because the user set the stop_on_solib_events | |
13347 | variable? (If so, we report this as a generic, "Stopped due | |
13348 | to shlib event" message.) */ | |
edcc5120 | 13349 | print_solib_event (0); |
348d480f PA |
13350 | break; |
13351 | ||
13352 | case bp_thread_event: | |
13353 | /* Not sure how we will get here. | |
13354 | GDB should not stop for these breakpoints. */ | |
13355 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13356 | break; |
13357 | ||
13358 | case bp_overlay_event: | |
13359 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13360 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13361 | break; |
13362 | ||
13363 | case bp_longjmp_master: | |
13364 | /* These should never be enabled. */ | |
13365 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13366 | break; |
13367 | ||
13368 | case bp_std_terminate_master: | |
13369 | /* These should never be enabled. */ | |
13370 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13371 | "gdb should not stop!\n")); | |
348d480f PA |
13372 | break; |
13373 | ||
13374 | case bp_exception_master: | |
13375 | /* These should never be enabled. */ | |
13376 | printf_filtered (_("Exception Master Breakpoint: " | |
13377 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13378 | break; |
13379 | } | |
13380 | ||
001c8c33 | 13381 | return PRINT_NOTHING; |
06edf0c0 PA |
13382 | } |
13383 | ||
13384 | static void | |
13385 | internal_bkpt_print_mention (struct breakpoint *b) | |
13386 | { | |
13387 | /* Nothing to mention. These breakpoints are internal. */ | |
13388 | } | |
13389 | ||
06edf0c0 PA |
13390 | /* Virtual table for momentary breakpoints */ |
13391 | ||
13392 | static void | |
13393 | momentary_bkpt_re_set (struct breakpoint *b) | |
13394 | { | |
13395 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13396 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13397 | Otherwise these should have been blown away via the cleanup chain |
13398 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13399 | } | |
13400 | ||
13401 | static void | |
13402 | momentary_bkpt_check_status (bpstat bs) | |
13403 | { | |
13404 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13405 | } | |
13406 | ||
13407 | static enum print_stop_action | |
13408 | momentary_bkpt_print_it (bpstat bs) | |
13409 | { | |
001c8c33 | 13410 | return PRINT_UNKNOWN; |
348d480f PA |
13411 | } |
13412 | ||
06edf0c0 PA |
13413 | static void |
13414 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13415 | { |
06edf0c0 | 13416 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13417 | } |
13418 | ||
e2e4d78b JK |
13419 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13420 | ||
13421 | It gets cleared already on the removal of the first one of such placed | |
13422 | breakpoints. This is OK as they get all removed altogether. */ | |
13423 | ||
13424 | static void | |
13425 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13426 | { | |
5d5658a1 | 13427 | struct thread_info *tp = find_thread_global_id (self->thread); |
e2e4d78b JK |
13428 | |
13429 | if (tp) | |
13430 | tp->initiating_frame = null_frame_id; | |
13431 | ||
13432 | momentary_breakpoint_ops.dtor (self); | |
13433 | } | |
13434 | ||
55aa24fb SDJ |
13435 | /* Specific methods for probe breakpoints. */ |
13436 | ||
13437 | static int | |
13438 | bkpt_probe_insert_location (struct bp_location *bl) | |
13439 | { | |
13440 | int v = bkpt_insert_location (bl); | |
13441 | ||
13442 | if (v == 0) | |
13443 | { | |
13444 | /* The insertion was successful, now let's set the probe's semaphore | |
13445 | if needed. */ | |
0ea5cda8 SDJ |
13446 | if (bl->probe.probe->pops->set_semaphore != NULL) |
13447 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
13448 | bl->probe.objfile, | |
13449 | bl->gdbarch); | |
55aa24fb SDJ |
13450 | } |
13451 | ||
13452 | return v; | |
13453 | } | |
13454 | ||
13455 | static int | |
73971819 PA |
13456 | bkpt_probe_remove_location (struct bp_location *bl, |
13457 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
13458 | { |
13459 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
13460 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
13461 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
13462 | bl->probe.objfile, | |
13463 | bl->gdbarch); | |
55aa24fb | 13464 | |
73971819 | 13465 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
13466 | } |
13467 | ||
13468 | static void | |
f00aae0f | 13469 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13470 | struct linespec_result *canonical, |
f00aae0f | 13471 | enum bptype type_wanted) |
55aa24fb SDJ |
13472 | { |
13473 | struct linespec_sals lsal; | |
13474 | ||
c2f4122d | 13475 | lsal.sals = parse_probes (location, NULL, canonical); |
f00aae0f | 13476 | lsal.canonical = xstrdup (event_location_to_string (canonical->location)); |
55aa24fb SDJ |
13477 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); |
13478 | } | |
13479 | ||
13480 | static void | |
f00aae0f KS |
13481 | bkpt_probe_decode_location (struct breakpoint *b, |
13482 | const struct event_location *location, | |
c2f4122d | 13483 | struct program_space *search_pspace, |
55aa24fb SDJ |
13484 | struct symtabs_and_lines *sals) |
13485 | { | |
c2f4122d | 13486 | *sals = parse_probes (location, search_pspace, NULL); |
55aa24fb SDJ |
13487 | if (!sals->sals) |
13488 | error (_("probe not found")); | |
13489 | } | |
13490 | ||
348d480f | 13491 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13492 | |
348d480f PA |
13493 | static void |
13494 | tracepoint_re_set (struct breakpoint *b) | |
13495 | { | |
13496 | breakpoint_re_set_default (b); | |
13497 | } | |
876fa593 | 13498 | |
348d480f PA |
13499 | static int |
13500 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13501 | struct address_space *aspace, CORE_ADDR bp_addr, |
13502 | const struct target_waitstatus *ws) | |
348d480f PA |
13503 | { |
13504 | /* By definition, the inferior does not report stops at | |
13505 | tracepoints. */ | |
13506 | return 0; | |
74960c60 VP |
13507 | } |
13508 | ||
13509 | static void | |
348d480f PA |
13510 | tracepoint_print_one_detail (const struct breakpoint *self, |
13511 | struct ui_out *uiout) | |
74960c60 | 13512 | { |
d9b3f62e PA |
13513 | struct tracepoint *tp = (struct tracepoint *) self; |
13514 | if (tp->static_trace_marker_id) | |
348d480f PA |
13515 | { |
13516 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13517 | |
348d480f PA |
13518 | ui_out_text (uiout, "\tmarker id is "); |
13519 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13520 | tp->static_trace_marker_id); |
348d480f PA |
13521 | ui_out_text (uiout, "\n"); |
13522 | } | |
0d381245 VP |
13523 | } |
13524 | ||
a474d7c2 | 13525 | static void |
348d480f | 13526 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13527 | { |
79a45e25 | 13528 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13529 | return; |
cc59ec59 | 13530 | |
348d480f PA |
13531 | switch (b->type) |
13532 | { | |
13533 | case bp_tracepoint: | |
13534 | printf_filtered (_("Tracepoint")); | |
13535 | printf_filtered (_(" %d"), b->number); | |
13536 | break; | |
13537 | case bp_fast_tracepoint: | |
13538 | printf_filtered (_("Fast tracepoint")); | |
13539 | printf_filtered (_(" %d"), b->number); | |
13540 | break; | |
13541 | case bp_static_tracepoint: | |
13542 | printf_filtered (_("Static tracepoint")); | |
13543 | printf_filtered (_(" %d"), b->number); | |
13544 | break; | |
13545 | default: | |
13546 | internal_error (__FILE__, __LINE__, | |
13547 | _("unhandled tracepoint type %d"), (int) b->type); | |
13548 | } | |
13549 | ||
13550 | say_where (b); | |
a474d7c2 PA |
13551 | } |
13552 | ||
348d480f | 13553 | static void |
d9b3f62e | 13554 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13555 | { |
d9b3f62e PA |
13556 | struct tracepoint *tp = (struct tracepoint *) self; |
13557 | ||
13558 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13559 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 13560 | else if (self->type == bp_static_tracepoint) |
348d480f | 13561 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13562 | else if (self->type == bp_tracepoint) |
348d480f PA |
13563 | fprintf_unfiltered (fp, "trace"); |
13564 | else | |
13565 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13566 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13567 | |
f00aae0f KS |
13568 | fprintf_unfiltered (fp, " %s", |
13569 | event_location_to_string (self->location)); | |
d9b3f62e PA |
13570 | print_recreate_thread (self, fp); |
13571 | ||
13572 | if (tp->pass_count) | |
13573 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13574 | } |
13575 | ||
983af33b | 13576 | static void |
f00aae0f KS |
13577 | tracepoint_create_sals_from_location (const struct event_location *location, |
13578 | struct linespec_result *canonical, | |
13579 | enum bptype type_wanted) | |
983af33b | 13580 | { |
f00aae0f | 13581 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13582 | } |
13583 | ||
13584 | static void | |
13585 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13586 | struct linespec_result *canonical, | |
983af33b | 13587 | char *cond_string, |
e7e0cddf | 13588 | char *extra_string, |
983af33b SDJ |
13589 | enum bptype type_wanted, |
13590 | enum bpdisp disposition, | |
13591 | int thread, | |
13592 | int task, int ignore_count, | |
13593 | const struct breakpoint_ops *ops, | |
13594 | int from_tty, int enabled, | |
44f238bb | 13595 | int internal, unsigned flags) |
983af33b | 13596 | { |
023fa29b | 13597 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13598 | cond_string, extra_string, |
13599 | type_wanted, | |
983af33b SDJ |
13600 | disposition, thread, task, |
13601 | ignore_count, ops, from_tty, | |
44f238bb | 13602 | enabled, internal, flags); |
983af33b SDJ |
13603 | } |
13604 | ||
13605 | static void | |
f00aae0f KS |
13606 | tracepoint_decode_location (struct breakpoint *b, |
13607 | const struct event_location *location, | |
c2f4122d | 13608 | struct program_space *search_pspace, |
983af33b SDJ |
13609 | struct symtabs_and_lines *sals) |
13610 | { | |
c2f4122d | 13611 | decode_location_default (b, location, search_pspace, sals); |
983af33b SDJ |
13612 | } |
13613 | ||
2060206e | 13614 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13615 | |
55aa24fb SDJ |
13616 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13617 | static probe. */ | |
13618 | ||
13619 | static void | |
f00aae0f KS |
13620 | tracepoint_probe_create_sals_from_location |
13621 | (const struct event_location *location, | |
13622 | struct linespec_result *canonical, | |
13623 | enum bptype type_wanted) | |
55aa24fb SDJ |
13624 | { |
13625 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13626 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13627 | } |
13628 | ||
13629 | static void | |
f00aae0f KS |
13630 | tracepoint_probe_decode_location (struct breakpoint *b, |
13631 | const struct event_location *location, | |
c2f4122d | 13632 | struct program_space *search_pspace, |
55aa24fb SDJ |
13633 | struct symtabs_and_lines *sals) |
13634 | { | |
13635 | /* We use the same method for breakpoint on probes. */ | |
c2f4122d | 13636 | bkpt_probe_decode_location (b, location, search_pspace, sals); |
55aa24fb SDJ |
13637 | } |
13638 | ||
13639 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13640 | ||
5c2b4418 HZ |
13641 | /* Dprintf breakpoint_ops methods. */ |
13642 | ||
13643 | static void | |
13644 | dprintf_re_set (struct breakpoint *b) | |
13645 | { | |
13646 | breakpoint_re_set_default (b); | |
13647 | ||
f00aae0f KS |
13648 | /* extra_string should never be non-NULL for dprintf. */ |
13649 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13650 | |
13651 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13652 | 2 - create a dprintf, which resolves fine. | |
13653 | 3 - disconnect from target 1 | |
13654 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13655 | ||
13656 | After steps #3/#4, you'll want the dprintf command list to | |
13657 | be updated, because target 1 and 2 may well return different | |
13658 | answers for target_can_run_breakpoint_commands(). | |
13659 | Given absence of finer grained resetting, we get to do | |
13660 | it all the time. */ | |
13661 | if (b->extra_string != NULL) | |
13662 | update_dprintf_command_list (b); | |
13663 | } | |
13664 | ||
2d9442cc HZ |
13665 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13666 | ||
13667 | static void | |
13668 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13669 | { | |
f00aae0f KS |
13670 | fprintf_unfiltered (fp, "dprintf %s,%s", |
13671 | event_location_to_string (tp->location), | |
2d9442cc HZ |
13672 | tp->extra_string); |
13673 | print_recreate_thread (tp, fp); | |
13674 | } | |
13675 | ||
9d6e6e84 HZ |
13676 | /* Implement the "after_condition_true" breakpoint_ops method for |
13677 | dprintf. | |
13678 | ||
13679 | dprintf's are implemented with regular commands in their command | |
13680 | list, but we run the commands here instead of before presenting the | |
13681 | stop to the user, as dprintf's don't actually cause a stop. This | |
13682 | also makes it so that the commands of multiple dprintfs at the same | |
13683 | address are all handled. */ | |
13684 | ||
13685 | static void | |
13686 | dprintf_after_condition_true (struct bpstats *bs) | |
13687 | { | |
13688 | struct cleanup *old_chain; | |
13689 | struct bpstats tmp_bs = { NULL }; | |
13690 | struct bpstats *tmp_bs_p = &tmp_bs; | |
13691 | ||
13692 | /* dprintf's never cause a stop. This wasn't set in the | |
13693 | check_status hook instead because that would make the dprintf's | |
13694 | condition not be evaluated. */ | |
13695 | bs->stop = 0; | |
13696 | ||
13697 | /* Run the command list here. Take ownership of it instead of | |
13698 | copying. We never want these commands to run later in | |
13699 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13700 | be set at same address as this dprintf, or even if running the | |
13701 | commands here throws. */ | |
13702 | tmp_bs.commands = bs->commands; | |
13703 | bs->commands = NULL; | |
13704 | old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands); | |
13705 | ||
13706 | bpstat_do_actions_1 (&tmp_bs_p); | |
13707 | ||
13708 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13709 | bpstat_do_actions_1 may return early without processing the whole | |
13710 | list. */ | |
13711 | do_cleanups (old_chain); | |
13712 | } | |
13713 | ||
983af33b SDJ |
13714 | /* The breakpoint_ops structure to be used on static tracepoints with |
13715 | markers (`-m'). */ | |
13716 | ||
13717 | static void | |
f00aae0f | 13718 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13719 | struct linespec_result *canonical, |
f00aae0f | 13720 | enum bptype type_wanted) |
983af33b SDJ |
13721 | { |
13722 | struct linespec_sals lsal; | |
f00aae0f KS |
13723 | const char *arg_start, *arg; |
13724 | char *str; | |
13725 | struct cleanup *cleanup; | |
983af33b | 13726 | |
f00aae0f KS |
13727 | arg = arg_start = get_linespec_location (location); |
13728 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13729 | |
f00aae0f KS |
13730 | str = savestring (arg_start, arg - arg_start); |
13731 | cleanup = make_cleanup (xfree, str); | |
13732 | canonical->location = new_linespec_location (&str); | |
13733 | do_cleanups (cleanup); | |
983af33b | 13734 | |
f00aae0f | 13735 | lsal.canonical = xstrdup (event_location_to_string (canonical->location)); |
983af33b SDJ |
13736 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); |
13737 | } | |
13738 | ||
13739 | static void | |
13740 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13741 | struct linespec_result *canonical, | |
983af33b | 13742 | char *cond_string, |
e7e0cddf | 13743 | char *extra_string, |
983af33b SDJ |
13744 | enum bptype type_wanted, |
13745 | enum bpdisp disposition, | |
13746 | int thread, | |
13747 | int task, int ignore_count, | |
13748 | const struct breakpoint_ops *ops, | |
13749 | int from_tty, int enabled, | |
44f238bb | 13750 | int internal, unsigned flags) |
983af33b SDJ |
13751 | { |
13752 | int i; | |
52d361e1 YQ |
13753 | struct linespec_sals *lsal = VEC_index (linespec_sals, |
13754 | canonical->sals, 0); | |
983af33b SDJ |
13755 | |
13756 | /* If the user is creating a static tracepoint by marker id | |
13757 | (strace -m MARKER_ID), then store the sals index, so that | |
13758 | breakpoint_re_set can try to match up which of the newly | |
13759 | found markers corresponds to this one, and, don't try to | |
13760 | expand multiple locations for each sal, given than SALS | |
13761 | already should contain all sals for MARKER_ID. */ | |
13762 | ||
13763 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13764 | { | |
13765 | struct symtabs_and_lines expanded; | |
13766 | struct tracepoint *tp; | |
13767 | struct cleanup *old_chain; | |
f00aae0f | 13768 | struct event_location *location; |
983af33b SDJ |
13769 | |
13770 | expanded.nelts = 1; | |
13771 | expanded.sals = &lsal->sals.sals[i]; | |
13772 | ||
f00aae0f KS |
13773 | location = copy_event_location (canonical->location); |
13774 | old_chain = make_cleanup_delete_event_location (location); | |
983af33b | 13775 | |
4d01a485 | 13776 | tp = new tracepoint (); |
983af33b | 13777 | init_breakpoint_sal (&tp->base, gdbarch, expanded, |
f00aae0f | 13778 | location, NULL, |
e7e0cddf SS |
13779 | cond_string, extra_string, |
13780 | type_wanted, disposition, | |
983af33b | 13781 | thread, task, ignore_count, ops, |
44f238bb | 13782 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13783 | canonical->special_display); |
13784 | /* Given that its possible to have multiple markers with | |
13785 | the same string id, if the user is creating a static | |
13786 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13787 | store the sals index, so that breakpoint_re_set can | |
13788 | try to match up which of the newly found markers | |
13789 | corresponds to this one */ | |
13790 | tp->static_trace_marker_id_idx = i; | |
13791 | ||
13792 | install_breakpoint (internal, &tp->base, 0); | |
13793 | ||
13794 | discard_cleanups (old_chain); | |
13795 | } | |
13796 | } | |
13797 | ||
13798 | static void | |
f00aae0f KS |
13799 | strace_marker_decode_location (struct breakpoint *b, |
13800 | const struct event_location *location, | |
c2f4122d | 13801 | struct program_space *search_pspace, |
983af33b SDJ |
13802 | struct symtabs_and_lines *sals) |
13803 | { | |
13804 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13805 | const char *s = get_linespec_location (location); |
983af33b | 13806 | |
f00aae0f | 13807 | *sals = decode_static_tracepoint_spec (&s); |
983af33b SDJ |
13808 | if (sals->nelts > tp->static_trace_marker_id_idx) |
13809 | { | |
13810 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13811 | sals->nelts = 1; | |
13812 | } | |
13813 | else | |
13814 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13815 | } | |
13816 | ||
13817 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13818 | ||
13819 | static int | |
13820 | strace_marker_p (struct breakpoint *b) | |
13821 | { | |
13822 | return b->ops == &strace_marker_breakpoint_ops; | |
13823 | } | |
13824 | ||
53a5351d | 13825 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13826 | structures. */ |
c906108c SS |
13827 | |
13828 | void | |
fba45db2 | 13829 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13830 | { |
52f0bd74 | 13831 | struct breakpoint *b; |
c906108c | 13832 | |
8a3fe4f8 | 13833 | gdb_assert (bpt != NULL); |
c906108c | 13834 | |
4a64f543 MS |
13835 | /* Has this bp already been deleted? This can happen because |
13836 | multiple lists can hold pointers to bp's. bpstat lists are | |
13837 | especial culprits. | |
13838 | ||
13839 | One example of this happening is a watchpoint's scope bp. When | |
13840 | the scope bp triggers, we notice that the watchpoint is out of | |
13841 | scope, and delete it. We also delete its scope bp. But the | |
13842 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13843 | That bpstat is then checked for auto-deleting bp's, which are | |
13844 | deleted. | |
13845 | ||
13846 | A real solution to this problem might involve reference counts in | |
13847 | bp's, and/or giving them pointers back to their referencing | |
13848 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13849 | storage when no more references were extent. A cheaper bandaid | |
13850 | was chosen. */ | |
c906108c SS |
13851 | if (bpt->type == bp_none) |
13852 | return; | |
13853 | ||
4a64f543 MS |
13854 | /* At least avoid this stale reference until the reference counting |
13855 | of breakpoints gets resolved. */ | |
d0fb5eae | 13856 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13857 | { |
d0fb5eae | 13858 | struct breakpoint *related; |
3a5c3e22 | 13859 | struct watchpoint *w; |
d0fb5eae JK |
13860 | |
13861 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13862 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13863 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13864 | w = (struct watchpoint *) bpt; |
13865 | else | |
13866 | w = NULL; | |
13867 | if (w != NULL) | |
13868 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13869 | |
13870 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13871 | for (related = bpt; related->related_breakpoint != bpt; | |
13872 | related = related->related_breakpoint); | |
13873 | related->related_breakpoint = bpt->related_breakpoint; | |
13874 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13875 | } |
13876 | ||
a9634178 TJB |
13877 | /* watch_command_1 creates a watchpoint but only sets its number if |
13878 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13879 | a problem in that process, we'll be asked to delete the half-created | |
13880 | watchpoint. In that case, don't announce the deletion. */ | |
13881 | if (bpt->number) | |
13882 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13883 | |
c906108c SS |
13884 | if (breakpoint_chain == bpt) |
13885 | breakpoint_chain = bpt->next; | |
13886 | ||
c906108c SS |
13887 | ALL_BREAKPOINTS (b) |
13888 | if (b->next == bpt) | |
c5aa993b JM |
13889 | { |
13890 | b->next = bpt->next; | |
13891 | break; | |
13892 | } | |
c906108c | 13893 | |
f431efe5 PA |
13894 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13895 | been freed. */ | |
13896 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13897 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13898 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13899 | commands are associated with the bpstat; if we remove it here, | |
13900 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13901 | event-top.c won't do anything, and temporary breakpoints with | |
13902 | commands won't work. */ | |
13903 | ||
13904 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13905 | ||
4a64f543 MS |
13906 | /* Now that breakpoint is removed from breakpoint list, update the |
13907 | global location list. This will remove locations that used to | |
13908 | belong to this breakpoint. Do this before freeing the breakpoint | |
13909 | itself, since remove_breakpoint looks at location's owner. It | |
13910 | might be better design to have location completely | |
13911 | self-contained, but it's not the case now. */ | |
44702360 | 13912 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13913 | |
348d480f | 13914 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13915 | /* On the chance that someone will soon try again to delete this |
13916 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13917 | bpt->type = bp_none; |
4d01a485 | 13918 | delete bpt; |
c906108c SS |
13919 | } |
13920 | ||
4d6140d9 AC |
13921 | static void |
13922 | do_delete_breakpoint_cleanup (void *b) | |
13923 | { | |
9a3c8263 | 13924 | delete_breakpoint ((struct breakpoint *) b); |
4d6140d9 AC |
13925 | } |
13926 | ||
13927 | struct cleanup * | |
13928 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13929 | { | |
13930 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13931 | } | |
13932 | ||
51be5b68 PA |
13933 | /* Iterator function to call a user-provided callback function once |
13934 | for each of B and its related breakpoints. */ | |
13935 | ||
13936 | static void | |
13937 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13938 | void (*function) (struct breakpoint *, | |
13939 | void *), | |
13940 | void *data) | |
13941 | { | |
13942 | struct breakpoint *related; | |
13943 | ||
13944 | related = b; | |
13945 | do | |
13946 | { | |
13947 | struct breakpoint *next; | |
13948 | ||
13949 | /* FUNCTION may delete RELATED. */ | |
13950 | next = related->related_breakpoint; | |
13951 | ||
13952 | if (next == related) | |
13953 | { | |
13954 | /* RELATED is the last ring entry. */ | |
13955 | function (related, data); | |
13956 | ||
13957 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13958 | B. There's nothing left to do anyway, so just break | |
13959 | out. */ | |
13960 | break; | |
13961 | } | |
13962 | else | |
13963 | function (related, data); | |
13964 | ||
13965 | related = next; | |
13966 | } | |
13967 | while (related != b); | |
13968 | } | |
95a42b64 TT |
13969 | |
13970 | static void | |
13971 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13972 | { | |
13973 | delete_breakpoint (b); | |
13974 | } | |
13975 | ||
51be5b68 PA |
13976 | /* A callback for map_breakpoint_numbers that calls |
13977 | delete_breakpoint. */ | |
13978 | ||
13979 | static void | |
13980 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13981 | { | |
13982 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13983 | } | |
13984 | ||
c906108c | 13985 | void |
fba45db2 | 13986 | delete_command (char *arg, int from_tty) |
c906108c | 13987 | { |
35df4500 | 13988 | struct breakpoint *b, *b_tmp; |
c906108c | 13989 | |
ea9365bb TT |
13990 | dont_repeat (); |
13991 | ||
c906108c SS |
13992 | if (arg == 0) |
13993 | { | |
13994 | int breaks_to_delete = 0; | |
13995 | ||
46c6471b PA |
13996 | /* Delete all breakpoints if no argument. Do not delete |
13997 | internal breakpoints, these have to be deleted with an | |
13998 | explicit breakpoint number argument. */ | |
c5aa993b | 13999 | ALL_BREAKPOINTS (b) |
46c6471b | 14000 | if (user_breakpoint_p (b)) |
973d738b DJ |
14001 | { |
14002 | breaks_to_delete = 1; | |
14003 | break; | |
14004 | } | |
c906108c SS |
14005 | |
14006 | /* Ask user only if there are some breakpoints to delete. */ | |
14007 | if (!from_tty | |
e2e0b3e5 | 14008 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 14009 | { |
35df4500 | 14010 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14011 | if (user_breakpoint_p (b)) |
c5aa993b | 14012 | delete_breakpoint (b); |
c906108c SS |
14013 | } |
14014 | } | |
14015 | else | |
51be5b68 | 14016 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
14017 | } |
14018 | ||
c2f4122d PA |
14019 | /* Return true if all locations of B bound to PSPACE are pending. If |
14020 | PSPACE is NULL, all locations of all program spaces are | |
14021 | considered. */ | |
14022 | ||
0d381245 | 14023 | static int |
c2f4122d | 14024 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 14025 | { |
c2f4122d PA |
14026 | struct bp_location *loc; |
14027 | ||
14028 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
14029 | if ((pspace == NULL | |
14030 | || loc->pspace == pspace) | |
14031 | && !loc->shlib_disabled | |
8645ff69 | 14032 | && !loc->pspace->executing_startup) |
0d381245 VP |
14033 | return 0; |
14034 | return 1; | |
fe3f5fa8 VP |
14035 | } |
14036 | ||
776592bf DE |
14037 | /* Subroutine of update_breakpoint_locations to simplify it. |
14038 | Return non-zero if multiple fns in list LOC have the same name. | |
14039 | Null names are ignored. */ | |
14040 | ||
14041 | static int | |
14042 | ambiguous_names_p (struct bp_location *loc) | |
14043 | { | |
14044 | struct bp_location *l; | |
14045 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
14046 | (int (*) (const void *, |
14047 | const void *)) streq, | |
776592bf DE |
14048 | NULL, xcalloc, xfree); |
14049 | ||
14050 | for (l = loc; l != NULL; l = l->next) | |
14051 | { | |
14052 | const char **slot; | |
14053 | const char *name = l->function_name; | |
14054 | ||
14055 | /* Allow for some names to be NULL, ignore them. */ | |
14056 | if (name == NULL) | |
14057 | continue; | |
14058 | ||
14059 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
14060 | INSERT); | |
4a64f543 MS |
14061 | /* NOTE: We can assume slot != NULL here because xcalloc never |
14062 | returns NULL. */ | |
776592bf DE |
14063 | if (*slot != NULL) |
14064 | { | |
14065 | htab_delete (htab); | |
14066 | return 1; | |
14067 | } | |
14068 | *slot = name; | |
14069 | } | |
14070 | ||
14071 | htab_delete (htab); | |
14072 | return 0; | |
14073 | } | |
14074 | ||
0fb4aa4b PA |
14075 | /* When symbols change, it probably means the sources changed as well, |
14076 | and it might mean the static tracepoint markers are no longer at | |
14077 | the same address or line numbers they used to be at last we | |
14078 | checked. Losing your static tracepoints whenever you rebuild is | |
14079 | undesirable. This function tries to resync/rematch gdb static | |
14080 | tracepoints with the markers on the target, for static tracepoints | |
14081 | that have not been set by marker id. Static tracepoint that have | |
14082 | been set by marker id are reset by marker id in breakpoint_re_set. | |
14083 | The heuristic is: | |
14084 | ||
14085 | 1) For a tracepoint set at a specific address, look for a marker at | |
14086 | the old PC. If one is found there, assume to be the same marker. | |
14087 | If the name / string id of the marker found is different from the | |
14088 | previous known name, assume that means the user renamed the marker | |
14089 | in the sources, and output a warning. | |
14090 | ||
14091 | 2) For a tracepoint set at a given line number, look for a marker | |
14092 | at the new address of the old line number. If one is found there, | |
14093 | assume to be the same marker. If the name / string id of the | |
14094 | marker found is different from the previous known name, assume that | |
14095 | means the user renamed the marker in the sources, and output a | |
14096 | warning. | |
14097 | ||
14098 | 3) If a marker is no longer found at the same address or line, it | |
14099 | may mean the marker no longer exists. But it may also just mean | |
14100 | the code changed a bit. Maybe the user added a few lines of code | |
14101 | that made the marker move up or down (in line number terms). Ask | |
14102 | the target for info about the marker with the string id as we knew | |
14103 | it. If found, update line number and address in the matching | |
14104 | static tracepoint. This will get confused if there's more than one | |
14105 | marker with the same ID (possible in UST, although unadvised | |
14106 | precisely because it confuses tools). */ | |
14107 | ||
14108 | static struct symtab_and_line | |
14109 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
14110 | { | |
d9b3f62e | 14111 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
14112 | struct static_tracepoint_marker marker; |
14113 | CORE_ADDR pc; | |
0fb4aa4b PA |
14114 | |
14115 | pc = sal.pc; | |
14116 | if (sal.line) | |
14117 | find_line_pc (sal.symtab, sal.line, &pc); | |
14118 | ||
14119 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
14120 | { | |
d9b3f62e | 14121 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
14122 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
14123 | b->number, | |
d9b3f62e | 14124 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 14125 | |
d9b3f62e PA |
14126 | xfree (tp->static_trace_marker_id); |
14127 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
14128 | release_static_tracepoint_marker (&marker); |
14129 | ||
14130 | return sal; | |
14131 | } | |
14132 | ||
14133 | /* Old marker wasn't found on target at lineno. Try looking it up | |
14134 | by string ID. */ | |
14135 | if (!sal.explicit_pc | |
14136 | && sal.line != 0 | |
14137 | && sal.symtab != NULL | |
d9b3f62e | 14138 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
14139 | { |
14140 | VEC(static_tracepoint_marker_p) *markers; | |
14141 | ||
14142 | markers | |
d9b3f62e | 14143 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
14144 | |
14145 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
14146 | { | |
80e1d417 | 14147 | struct symtab_and_line sal2; |
0fb4aa4b | 14148 | struct symbol *sym; |
80e1d417 | 14149 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 14150 | struct ui_out *uiout = current_uiout; |
67994074 | 14151 | struct explicit_location explicit_loc; |
0fb4aa4b | 14152 | |
80e1d417 | 14153 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 14154 | |
d9b3f62e | 14155 | xfree (tp->static_trace_marker_id); |
80e1d417 | 14156 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
14157 | |
14158 | warning (_("marker for static tracepoint %d (%s) not " | |
14159 | "found at previous line number"), | |
d9b3f62e | 14160 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 14161 | |
80e1d417 | 14162 | init_sal (&sal2); |
0fb4aa4b | 14163 | |
80e1d417 | 14164 | sal2.pc = tpmarker->address; |
0fb4aa4b | 14165 | |
80e1d417 AS |
14166 | sal2 = find_pc_line (tpmarker->address, 0); |
14167 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
14168 | ui_out_text (uiout, "Now in "); |
14169 | if (sym) | |
14170 | { | |
14171 | ui_out_field_string (uiout, "func", | |
14172 | SYMBOL_PRINT_NAME (sym)); | |
14173 | ui_out_text (uiout, " at "); | |
14174 | } | |
05cba821 JK |
14175 | ui_out_field_string (uiout, "file", |
14176 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
14177 | ui_out_text (uiout, ":"); |
14178 | ||
14179 | if (ui_out_is_mi_like_p (uiout)) | |
14180 | { | |
0b0865da | 14181 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 14182 | |
f35a17b5 | 14183 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
14184 | } |
14185 | ||
80e1d417 | 14186 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
14187 | ui_out_text (uiout, "\n"); |
14188 | ||
80e1d417 | 14189 | b->loc->line_number = sal2.line; |
2f202fde | 14190 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 14191 | |
f00aae0f | 14192 | delete_event_location (b->location); |
67994074 KS |
14193 | initialize_explicit_location (&explicit_loc); |
14194 | explicit_loc.source_filename | |
00e52e53 | 14195 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
14196 | explicit_loc.line_offset.offset = b->loc->line_number; |
14197 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
14198 | b->location = new_explicit_location (&explicit_loc); | |
0fb4aa4b PA |
14199 | |
14200 | /* Might be nice to check if function changed, and warn if | |
14201 | so. */ | |
14202 | ||
80e1d417 | 14203 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
14204 | } |
14205 | } | |
14206 | return sal; | |
14207 | } | |
14208 | ||
8d3788bd VP |
14209 | /* Returns 1 iff locations A and B are sufficiently same that |
14210 | we don't need to report breakpoint as changed. */ | |
14211 | ||
14212 | static int | |
14213 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
14214 | { | |
14215 | while (a && b) | |
14216 | { | |
14217 | if (a->address != b->address) | |
14218 | return 0; | |
14219 | ||
14220 | if (a->shlib_disabled != b->shlib_disabled) | |
14221 | return 0; | |
14222 | ||
14223 | if (a->enabled != b->enabled) | |
14224 | return 0; | |
14225 | ||
14226 | a = a->next; | |
14227 | b = b->next; | |
14228 | } | |
14229 | ||
14230 | if ((a == NULL) != (b == NULL)) | |
14231 | return 0; | |
14232 | ||
14233 | return 1; | |
14234 | } | |
14235 | ||
c2f4122d PA |
14236 | /* Split all locations of B that are bound to PSPACE out of B's |
14237 | location list to a separate list and return that list's head. If | |
14238 | PSPACE is NULL, hoist out all locations of B. */ | |
14239 | ||
14240 | static struct bp_location * | |
14241 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
14242 | { | |
14243 | struct bp_location head; | |
14244 | struct bp_location *i = b->loc; | |
14245 | struct bp_location **i_link = &b->loc; | |
14246 | struct bp_location *hoisted = &head; | |
14247 | ||
14248 | if (pspace == NULL) | |
14249 | { | |
14250 | i = b->loc; | |
14251 | b->loc = NULL; | |
14252 | return i; | |
14253 | } | |
14254 | ||
14255 | head.next = NULL; | |
14256 | ||
14257 | while (i != NULL) | |
14258 | { | |
14259 | if (i->pspace == pspace) | |
14260 | { | |
14261 | *i_link = i->next; | |
14262 | i->next = NULL; | |
14263 | hoisted->next = i; | |
14264 | hoisted = i; | |
14265 | } | |
14266 | else | |
14267 | i_link = &i->next; | |
14268 | i = *i_link; | |
14269 | } | |
14270 | ||
14271 | return head.next; | |
14272 | } | |
14273 | ||
14274 | /* Create new breakpoint locations for B (a hardware or software | |
14275 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
14276 | zero, then B is a ranged breakpoint. Only recreates locations for | |
14277 | FILTER_PSPACE. Locations of other program spaces are left | |
14278 | untouched. */ | |
f1310107 | 14279 | |
0e30163f | 14280 | void |
0d381245 | 14281 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 14282 | struct program_space *filter_pspace, |
f1310107 TJB |
14283 | struct symtabs_and_lines sals, |
14284 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
14285 | { |
14286 | int i; | |
c2f4122d | 14287 | struct bp_location *existing_locations; |
0d381245 | 14288 | |
f8eba3c6 TT |
14289 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
14290 | { | |
14291 | /* Ranged breakpoints have only one start location and one end | |
14292 | location. */ | |
14293 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
14294 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
14295 | "multiple locations found\n"), | |
14296 | b->number); | |
14297 | return; | |
14298 | } | |
f1310107 | 14299 | |
4a64f543 MS |
14300 | /* If there's no new locations, and all existing locations are |
14301 | pending, don't do anything. This optimizes the common case where | |
14302 | all locations are in the same shared library, that was unloaded. | |
14303 | We'd like to retain the location, so that when the library is | |
14304 | loaded again, we don't loose the enabled/disabled status of the | |
14305 | individual locations. */ | |
c2f4122d | 14306 | if (all_locations_are_pending (b, filter_pspace) && sals.nelts == 0) |
fe3f5fa8 VP |
14307 | return; |
14308 | ||
c2f4122d | 14309 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 14310 | |
0d381245 | 14311 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 14312 | { |
f8eba3c6 TT |
14313 | struct bp_location *new_loc; |
14314 | ||
14315 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
14316 | ||
14317 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 14318 | |
0d381245 VP |
14319 | /* Reparse conditions, they might contain references to the |
14320 | old symtab. */ | |
14321 | if (b->cond_string != NULL) | |
14322 | { | |
bbc13ae3 | 14323 | const char *s; |
fe3f5fa8 | 14324 | |
0d381245 | 14325 | s = b->cond_string; |
492d29ea | 14326 | TRY |
0d381245 | 14327 | { |
1bb9788d TT |
14328 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
14329 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
14330 | 0); |
14331 | } | |
492d29ea | 14332 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 14333 | { |
3e43a32a MS |
14334 | warning (_("failed to reevaluate condition " |
14335 | "for breakpoint %d: %s"), | |
0d381245 VP |
14336 | b->number, e.message); |
14337 | new_loc->enabled = 0; | |
14338 | } | |
492d29ea | 14339 | END_CATCH |
0d381245 | 14340 | } |
fe3f5fa8 | 14341 | |
f1310107 TJB |
14342 | if (sals_end.nelts) |
14343 | { | |
14344 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
14345 | ||
14346 | new_loc->length = end - sals.sals[0].pc + 1; | |
14347 | } | |
0d381245 | 14348 | } |
fe3f5fa8 | 14349 | |
4a64f543 MS |
14350 | /* If possible, carry over 'disable' status from existing |
14351 | breakpoints. */ | |
0d381245 VP |
14352 | { |
14353 | struct bp_location *e = existing_locations; | |
776592bf DE |
14354 | /* If there are multiple breakpoints with the same function name, |
14355 | e.g. for inline functions, comparing function names won't work. | |
14356 | Instead compare pc addresses; this is just a heuristic as things | |
14357 | may have moved, but in practice it gives the correct answer | |
14358 | often enough until a better solution is found. */ | |
14359 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14360 | ||
0d381245 VP |
14361 | for (; e; e = e->next) |
14362 | { | |
14363 | if (!e->enabled && e->function_name) | |
14364 | { | |
14365 | struct bp_location *l = b->loc; | |
776592bf DE |
14366 | if (have_ambiguous_names) |
14367 | { | |
14368 | for (; l; l = l->next) | |
f1310107 | 14369 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14370 | { |
14371 | l->enabled = 0; | |
14372 | break; | |
14373 | } | |
14374 | } | |
14375 | else | |
14376 | { | |
14377 | for (; l; l = l->next) | |
14378 | if (l->function_name | |
14379 | && strcmp (e->function_name, l->function_name) == 0) | |
14380 | { | |
14381 | l->enabled = 0; | |
14382 | break; | |
14383 | } | |
14384 | } | |
0d381245 VP |
14385 | } |
14386 | } | |
14387 | } | |
fe3f5fa8 | 14388 | |
8d3788bd VP |
14389 | if (!locations_are_equal (existing_locations, b->loc)) |
14390 | observer_notify_breakpoint_modified (b); | |
fe3f5fa8 VP |
14391 | } |
14392 | ||
f00aae0f | 14393 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
14394 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
14395 | ||
14396 | static struct symtabs_and_lines | |
f00aae0f | 14397 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 14398 | struct program_space *search_pspace, int *found) |
ef23e705 | 14399 | { |
02d20e4a | 14400 | struct symtabs_and_lines sals = {0}; |
492d29ea | 14401 | struct gdb_exception exception = exception_none; |
ef23e705 | 14402 | |
983af33b | 14403 | gdb_assert (b->ops != NULL); |
ef23e705 | 14404 | |
492d29ea | 14405 | TRY |
ef23e705 | 14406 | { |
c2f4122d | 14407 | b->ops->decode_location (b, location, search_pspace, &sals); |
ef23e705 | 14408 | } |
492d29ea | 14409 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
14410 | { |
14411 | int not_found_and_ok = 0; | |
492d29ea PA |
14412 | |
14413 | exception = e; | |
14414 | ||
ef23e705 TJB |
14415 | /* For pending breakpoints, it's expected that parsing will |
14416 | fail until the right shared library is loaded. User has | |
14417 | already told to create pending breakpoints and don't need | |
14418 | extra messages. If breakpoint is in bp_shlib_disabled | |
14419 | state, then user already saw the message about that | |
14420 | breakpoint being disabled, and don't want to see more | |
14421 | errors. */ | |
58438ac1 | 14422 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
14423 | && (b->condition_not_parsed |
14424 | || (b->loc != NULL | |
14425 | && search_pspace != NULL | |
14426 | && b->loc->pspace != search_pspace) | |
ef23e705 | 14427 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 14428 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14429 | || b->enable_state == bp_disabled)) |
14430 | not_found_and_ok = 1; | |
14431 | ||
14432 | if (!not_found_and_ok) | |
14433 | { | |
14434 | /* We surely don't want to warn about the same breakpoint | |
14435 | 10 times. One solution, implemented here, is disable | |
14436 | the breakpoint on error. Another solution would be to | |
14437 | have separate 'warning emitted' flag. Since this | |
14438 | happens only when a binary has changed, I don't know | |
14439 | which approach is better. */ | |
14440 | b->enable_state = bp_disabled; | |
14441 | throw_exception (e); | |
14442 | } | |
14443 | } | |
492d29ea | 14444 | END_CATCH |
ef23e705 | 14445 | |
492d29ea | 14446 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 14447 | { |
f8eba3c6 | 14448 | int i; |
ef23e705 | 14449 | |
f8eba3c6 TT |
14450 | for (i = 0; i < sals.nelts; ++i) |
14451 | resolve_sal_pc (&sals.sals[i]); | |
f00aae0f | 14452 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 14453 | { |
ed1d1739 KS |
14454 | char *cond_string, *extra_string; |
14455 | int thread, task; | |
ef23e705 | 14456 | |
f00aae0f | 14457 | find_condition_and_thread (b->extra_string, sals.sals[0].pc, |
e7e0cddf SS |
14458 | &cond_string, &thread, &task, |
14459 | &extra_string); | |
f00aae0f | 14460 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
14461 | if (cond_string) |
14462 | b->cond_string = cond_string; | |
14463 | b->thread = thread; | |
14464 | b->task = task; | |
e7e0cddf | 14465 | if (extra_string) |
f00aae0f KS |
14466 | { |
14467 | xfree (b->extra_string); | |
14468 | b->extra_string = extra_string; | |
14469 | } | |
ef23e705 TJB |
14470 | b->condition_not_parsed = 0; |
14471 | } | |
14472 | ||
983af33b | 14473 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14474 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14475 | |
58438ac1 TT |
14476 | *found = 1; |
14477 | } | |
14478 | else | |
14479 | *found = 0; | |
ef23e705 TJB |
14480 | |
14481 | return sals; | |
14482 | } | |
14483 | ||
348d480f PA |
14484 | /* The default re_set method, for typical hardware or software |
14485 | breakpoints. Reevaluate the breakpoint and recreate its | |
14486 | locations. */ | |
14487 | ||
14488 | static void | |
28010a5d | 14489 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14490 | { |
14491 | int found; | |
f1310107 | 14492 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14493 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14494 | struct symtabs_and_lines expanded_end = {0}; |
c2f4122d | 14495 | struct program_space *filter_pspace = current_program_space; |
ef23e705 | 14496 | |
c2f4122d | 14497 | sals = location_to_sals (b, b->location, filter_pspace, &found); |
ef23e705 TJB |
14498 | if (found) |
14499 | { | |
14500 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14501 | expanded = sals; |
ef23e705 TJB |
14502 | } |
14503 | ||
f00aae0f | 14504 | if (b->location_range_end != NULL) |
f1310107 | 14505 | { |
c2f4122d PA |
14506 | sals_end = location_to_sals (b, b->location_range_end, |
14507 | filter_pspace, &found); | |
f1310107 TJB |
14508 | if (found) |
14509 | { | |
14510 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14511 | expanded_end = sals_end; |
f1310107 TJB |
14512 | } |
14513 | } | |
14514 | ||
c2f4122d | 14515 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
14516 | } |
14517 | ||
983af33b SDJ |
14518 | /* Default method for creating SALs from an address string. It basically |
14519 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14520 | ||
14521 | static void | |
f00aae0f KS |
14522 | create_sals_from_location_default (const struct event_location *location, |
14523 | struct linespec_result *canonical, | |
14524 | enum bptype type_wanted) | |
983af33b | 14525 | { |
f00aae0f | 14526 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
14527 | } |
14528 | ||
14529 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14530 | function for the `create_breakpoints_sal' method of | |
14531 | breakpoint_ops. */ | |
14532 | ||
14533 | static void | |
14534 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14535 | struct linespec_result *canonical, | |
983af33b | 14536 | char *cond_string, |
e7e0cddf | 14537 | char *extra_string, |
983af33b SDJ |
14538 | enum bptype type_wanted, |
14539 | enum bpdisp disposition, | |
14540 | int thread, | |
14541 | int task, int ignore_count, | |
14542 | const struct breakpoint_ops *ops, | |
14543 | int from_tty, int enabled, | |
44f238bb | 14544 | int internal, unsigned flags) |
983af33b SDJ |
14545 | { |
14546 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14547 | extra_string, |
983af33b SDJ |
14548 | type_wanted, disposition, |
14549 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14550 | enabled, internal, flags); |
983af33b SDJ |
14551 | } |
14552 | ||
14553 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 14554 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b SDJ |
14555 | |
14556 | static void | |
f00aae0f KS |
14557 | decode_location_default (struct breakpoint *b, |
14558 | const struct event_location *location, | |
c2f4122d | 14559 | struct program_space *search_pspace, |
983af33b SDJ |
14560 | struct symtabs_and_lines *sals) |
14561 | { | |
14562 | struct linespec_result canonical; | |
14563 | ||
14564 | init_linespec_result (&canonical); | |
c2f4122d | 14565 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
14566 | (struct symtab *) NULL, 0, |
14567 | &canonical, multiple_symbols_all, | |
14568 | b->filter); | |
14569 | ||
14570 | /* We should get 0 or 1 resulting SALs. */ | |
14571 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14572 | ||
14573 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14574 | { | |
14575 | struct linespec_sals *lsal; | |
14576 | ||
14577 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14578 | *sals = lsal->sals; | |
14579 | /* Arrange it so the destructor does not free the | |
14580 | contents. */ | |
14581 | lsal->sals.sals = NULL; | |
14582 | } | |
14583 | ||
14584 | destroy_linespec_result (&canonical); | |
14585 | } | |
14586 | ||
28010a5d PA |
14587 | /* Prepare the global context for a re-set of breakpoint B. */ |
14588 | ||
14589 | static struct cleanup * | |
14590 | prepare_re_set_context (struct breakpoint *b) | |
14591 | { | |
28010a5d | 14592 | input_radix = b->input_radix; |
28010a5d PA |
14593 | set_language (b->language); |
14594 | ||
c2f4122d | 14595 | return make_cleanup (null_cleanup, NULL); |
ef23e705 TJB |
14596 | } |
14597 | ||
c906108c SS |
14598 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14599 | The value we return ends up being the return value from catch_errors. | |
14600 | Unused in this case. */ | |
14601 | ||
14602 | static int | |
4efb68b1 | 14603 | breakpoint_re_set_one (void *bint) |
c906108c | 14604 | { |
4a64f543 | 14605 | /* Get past catch_errs. */ |
53a5351d | 14606 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14607 | struct cleanup *cleanups; |
c906108c | 14608 | |
348d480f PA |
14609 | cleanups = prepare_re_set_context (b); |
14610 | b->ops->re_set (b); | |
14611 | do_cleanups (cleanups); | |
c906108c SS |
14612 | return 0; |
14613 | } | |
14614 | ||
c2f4122d PA |
14615 | /* Re-set breakpoint locations for the current program space. |
14616 | Locations bound to other program spaces are left untouched. */ | |
14617 | ||
c906108c | 14618 | void |
69de3c6a | 14619 | breakpoint_re_set (void) |
c906108c | 14620 | { |
35df4500 | 14621 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14622 | enum language save_language; |
14623 | int save_input_radix; | |
6c95b8df | 14624 | struct cleanup *old_chain; |
c5aa993b | 14625 | |
c906108c SS |
14626 | save_language = current_language->la_language; |
14627 | save_input_radix = input_radix; | |
c2f4122d | 14628 | old_chain = save_current_space_and_thread (); |
6c95b8df | 14629 | |
2a7f3dff PA |
14630 | /* Note: we must not try to insert locations until after all |
14631 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
14632 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
14633 | hadn't been re-set yet, and thus may have stale locations. */ | |
14634 | ||
35df4500 | 14635 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14636 | { |
4a64f543 | 14637 | /* Format possible error msg. */ |
fe3f5fa8 | 14638 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14639 | b->number); |
14640 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14641 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14642 | do_cleanups (cleanups); |
c5aa993b | 14643 | } |
c906108c SS |
14644 | set_language (save_language); |
14645 | input_radix = save_input_radix; | |
e62c965a | 14646 | |
0756c555 | 14647 | jit_breakpoint_re_set (); |
4efc6507 | 14648 | |
6c95b8df PA |
14649 | do_cleanups (old_chain); |
14650 | ||
af02033e PP |
14651 | create_overlay_event_breakpoint (); |
14652 | create_longjmp_master_breakpoint (); | |
14653 | create_std_terminate_master_breakpoint (); | |
186c406b | 14654 | create_exception_master_breakpoint (); |
2a7f3dff PA |
14655 | |
14656 | /* Now we can insert. */ | |
14657 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
14658 | } |
14659 | \f | |
c906108c SS |
14660 | /* Reset the thread number of this breakpoint: |
14661 | ||
14662 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14663 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14664 | void |
fba45db2 | 14665 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14666 | { |
14667 | if (b->thread != -1) | |
14668 | { | |
39f77062 | 14669 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 14670 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
14671 | |
14672 | /* We're being called after following a fork. The new fork is | |
14673 | selected as current, and unless this was a vfork will have a | |
14674 | different program space from the original thread. Reset that | |
14675 | as well. */ | |
14676 | b->loc->pspace = current_program_space; | |
c906108c SS |
14677 | } |
14678 | } | |
14679 | ||
03ac34d5 MS |
14680 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14681 | If from_tty is nonzero, it prints a message to that effect, | |
14682 | which ends with a period (no newline). */ | |
14683 | ||
c906108c | 14684 | void |
fba45db2 | 14685 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14686 | { |
52f0bd74 | 14687 | struct breakpoint *b; |
c906108c SS |
14688 | |
14689 | if (count < 0) | |
14690 | count = 0; | |
14691 | ||
14692 | ALL_BREAKPOINTS (b) | |
14693 | if (b->number == bptnum) | |
c5aa993b | 14694 | { |
d77f58be SS |
14695 | if (is_tracepoint (b)) |
14696 | { | |
14697 | if (from_tty && count != 0) | |
14698 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14699 | bptnum); | |
14700 | return; | |
14701 | } | |
14702 | ||
c5aa993b | 14703 | b->ignore_count = count; |
221ea385 KS |
14704 | if (from_tty) |
14705 | { | |
14706 | if (count == 0) | |
3e43a32a MS |
14707 | printf_filtered (_("Will stop next time " |
14708 | "breakpoint %d is reached."), | |
221ea385 KS |
14709 | bptnum); |
14710 | else if (count == 1) | |
a3f17187 | 14711 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14712 | bptnum); |
14713 | else | |
3e43a32a MS |
14714 | printf_filtered (_("Will ignore next %d " |
14715 | "crossings of breakpoint %d."), | |
221ea385 KS |
14716 | count, bptnum); |
14717 | } | |
8d3788bd | 14718 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14719 | return; |
14720 | } | |
c906108c | 14721 | |
8a3fe4f8 | 14722 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14723 | } |
14724 | ||
c906108c SS |
14725 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14726 | ||
14727 | static void | |
fba45db2 | 14728 | ignore_command (char *args, int from_tty) |
c906108c SS |
14729 | { |
14730 | char *p = args; | |
52f0bd74 | 14731 | int num; |
c906108c SS |
14732 | |
14733 | if (p == 0) | |
e2e0b3e5 | 14734 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14735 | |
c906108c | 14736 | num = get_number (&p); |
5c44784c | 14737 | if (num == 0) |
8a3fe4f8 | 14738 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14739 | if (*p == 0) |
8a3fe4f8 | 14740 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14741 | |
14742 | set_ignore_count (num, | |
14743 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14744 | from_tty); | |
221ea385 KS |
14745 | if (from_tty) |
14746 | printf_filtered ("\n"); | |
c906108c SS |
14747 | } |
14748 | \f | |
14749 | /* Call FUNCTION on each of the breakpoints | |
14750 | whose numbers are given in ARGS. */ | |
14751 | ||
14752 | static void | |
896b6bda PA |
14753 | map_breakpoint_numbers (const char *args, |
14754 | void (*function) (struct breakpoint *, | |
14755 | void *), | |
95a42b64 | 14756 | void *data) |
c906108c | 14757 | { |
52f0bd74 AC |
14758 | int num; |
14759 | struct breakpoint *b, *tmp; | |
c906108c | 14760 | |
b9d61307 | 14761 | if (args == 0 || *args == '\0') |
e2e0b3e5 | 14762 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14763 | |
bfd28288 | 14764 | number_or_range_parser parser (args); |
197f0a60 | 14765 | |
bfd28288 | 14766 | while (!parser.finished ()) |
c906108c | 14767 | { |
bfd28288 PA |
14768 | const char *p = parser.cur_tok (); |
14769 | bool match = false; | |
197f0a60 | 14770 | |
bfd28288 | 14771 | num = parser.get_number (); |
5c44784c | 14772 | if (num == 0) |
c5aa993b | 14773 | { |
8a3fe4f8 | 14774 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14775 | } |
14776 | else | |
14777 | { | |
14778 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14779 | if (b->number == num) | |
14780 | { | |
bfd28288 | 14781 | match = true; |
cdac0397 | 14782 | function (b, data); |
11cf8741 | 14783 | break; |
5c44784c | 14784 | } |
bfd28288 | 14785 | if (!match) |
a3f17187 | 14786 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14787 | } |
c906108c SS |
14788 | } |
14789 | } | |
14790 | ||
0d381245 VP |
14791 | static struct bp_location * |
14792 | find_location_by_number (char *number) | |
14793 | { | |
14794 | char *dot = strchr (number, '.'); | |
14795 | char *p1; | |
14796 | int bp_num; | |
14797 | int loc_num; | |
14798 | struct breakpoint *b; | |
14799 | struct bp_location *loc; | |
14800 | ||
14801 | *dot = '\0'; | |
14802 | ||
14803 | p1 = number; | |
197f0a60 | 14804 | bp_num = get_number (&p1); |
0d381245 VP |
14805 | if (bp_num == 0) |
14806 | error (_("Bad breakpoint number '%s'"), number); | |
14807 | ||
14808 | ALL_BREAKPOINTS (b) | |
14809 | if (b->number == bp_num) | |
14810 | { | |
14811 | break; | |
14812 | } | |
14813 | ||
14814 | if (!b || b->number != bp_num) | |
14815 | error (_("Bad breakpoint number '%s'"), number); | |
14816 | ||
14817 | p1 = dot+1; | |
197f0a60 | 14818 | loc_num = get_number (&p1); |
0d381245 VP |
14819 | if (loc_num == 0) |
14820 | error (_("Bad breakpoint location number '%s'"), number); | |
14821 | ||
14822 | --loc_num; | |
14823 | loc = b->loc; | |
14824 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14825 | ; | |
14826 | if (!loc) | |
14827 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14828 | ||
14829 | return loc; | |
14830 | } | |
14831 | ||
14832 | ||
1900040c MS |
14833 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14834 | If from_tty is nonzero, it prints a message to that effect, | |
14835 | which ends with a period (no newline). */ | |
14836 | ||
c906108c | 14837 | void |
fba45db2 | 14838 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14839 | { |
14840 | /* Never disable a watchpoint scope breakpoint; we want to | |
14841 | hit them when we leave scope so we can delete both the | |
14842 | watchpoint and its scope breakpoint at that time. */ | |
14843 | if (bpt->type == bp_watchpoint_scope) | |
14844 | return; | |
14845 | ||
b5de0fa7 | 14846 | bpt->enable_state = bp_disabled; |
c906108c | 14847 | |
b775012e LM |
14848 | /* Mark breakpoint locations modified. */ |
14849 | mark_breakpoint_modified (bpt); | |
14850 | ||
d248b706 KY |
14851 | if (target_supports_enable_disable_tracepoint () |
14852 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14853 | { | |
14854 | struct bp_location *location; | |
14855 | ||
14856 | for (location = bpt->loc; location; location = location->next) | |
14857 | target_disable_tracepoint (location); | |
14858 | } | |
14859 | ||
44702360 | 14860 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14861 | |
8d3788bd | 14862 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14863 | } |
14864 | ||
51be5b68 PA |
14865 | /* A callback for iterate_over_related_breakpoints. */ |
14866 | ||
14867 | static void | |
14868 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14869 | { | |
14870 | disable_breakpoint (b); | |
14871 | } | |
14872 | ||
95a42b64 TT |
14873 | /* A callback for map_breakpoint_numbers that calls |
14874 | disable_breakpoint. */ | |
14875 | ||
14876 | static void | |
14877 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14878 | { | |
51be5b68 | 14879 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14880 | } |
14881 | ||
c906108c | 14882 | static void |
fba45db2 | 14883 | disable_command (char *args, int from_tty) |
c906108c | 14884 | { |
c906108c | 14885 | if (args == 0) |
46c6471b PA |
14886 | { |
14887 | struct breakpoint *bpt; | |
14888 | ||
14889 | ALL_BREAKPOINTS (bpt) | |
14890 | if (user_breakpoint_p (bpt)) | |
14891 | disable_breakpoint (bpt); | |
14892 | } | |
9eaabc75 | 14893 | else |
0d381245 | 14894 | { |
9eaabc75 MW |
14895 | char *num = extract_arg (&args); |
14896 | ||
14897 | while (num) | |
d248b706 | 14898 | { |
9eaabc75 | 14899 | if (strchr (num, '.')) |
b775012e | 14900 | { |
9eaabc75 MW |
14901 | struct bp_location *loc = find_location_by_number (num); |
14902 | ||
14903 | if (loc) | |
14904 | { | |
14905 | if (loc->enabled) | |
14906 | { | |
14907 | loc->enabled = 0; | |
14908 | mark_breakpoint_location_modified (loc); | |
14909 | } | |
14910 | if (target_supports_enable_disable_tracepoint () | |
14911 | && current_trace_status ()->running && loc->owner | |
14912 | && is_tracepoint (loc->owner)) | |
14913 | target_disable_tracepoint (loc); | |
14914 | } | |
44702360 | 14915 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 14916 | } |
9eaabc75 MW |
14917 | else |
14918 | map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL); | |
14919 | num = extract_arg (&args); | |
d248b706 | 14920 | } |
0d381245 | 14921 | } |
c906108c SS |
14922 | } |
14923 | ||
14924 | static void | |
816338b5 SS |
14925 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14926 | int count) | |
c906108c | 14927 | { |
afe38095 | 14928 | int target_resources_ok; |
c906108c SS |
14929 | |
14930 | if (bpt->type == bp_hardware_breakpoint) | |
14931 | { | |
14932 | int i; | |
c5aa993b | 14933 | i = hw_breakpoint_used_count (); |
53a5351d | 14934 | target_resources_ok = |
d92524f1 | 14935 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14936 | i + 1, 0); |
c906108c | 14937 | if (target_resources_ok == 0) |
8a3fe4f8 | 14938 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14939 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14940 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14941 | } |
14942 | ||
cc60f2e3 | 14943 | if (is_watchpoint (bpt)) |
c906108c | 14944 | { |
d07205c2 | 14945 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14946 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14947 | |
492d29ea | 14948 | TRY |
c906108c | 14949 | { |
3a5c3e22 PA |
14950 | struct watchpoint *w = (struct watchpoint *) bpt; |
14951 | ||
1e718ff1 TJB |
14952 | orig_enable_state = bpt->enable_state; |
14953 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14954 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14955 | } |
492d29ea | 14956 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14957 | { |
1e718ff1 | 14958 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14959 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14960 | bpt->number); | |
14961 | return; | |
c5aa993b | 14962 | } |
492d29ea | 14963 | END_CATCH |
c906108c | 14964 | } |
0101ce28 | 14965 | |
b775012e LM |
14966 | bpt->enable_state = bp_enabled; |
14967 | ||
14968 | /* Mark breakpoint locations modified. */ | |
14969 | mark_breakpoint_modified (bpt); | |
14970 | ||
d248b706 KY |
14971 | if (target_supports_enable_disable_tracepoint () |
14972 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14973 | { | |
14974 | struct bp_location *location; | |
14975 | ||
14976 | for (location = bpt->loc; location; location = location->next) | |
14977 | target_enable_tracepoint (location); | |
14978 | } | |
14979 | ||
b4c291bb | 14980 | bpt->disposition = disposition; |
816338b5 | 14981 | bpt->enable_count = count; |
44702360 | 14982 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14983 | |
8d3788bd | 14984 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14985 | } |
14986 | ||
fe3f5fa8 | 14987 | |
c906108c | 14988 | void |
fba45db2 | 14989 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14990 | { |
816338b5 | 14991 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14992 | } |
14993 | ||
14994 | static void | |
14995 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14996 | { | |
14997 | enable_breakpoint (bpt); | |
c906108c SS |
14998 | } |
14999 | ||
95a42b64 TT |
15000 | /* A callback for map_breakpoint_numbers that calls |
15001 | enable_breakpoint. */ | |
15002 | ||
15003 | static void | |
15004 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
15005 | { | |
51be5b68 | 15006 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
15007 | } |
15008 | ||
c906108c SS |
15009 | /* The enable command enables the specified breakpoints (or all defined |
15010 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 15011 | in stopping the inferior. */ |
c906108c | 15012 | |
c906108c | 15013 | static void |
fba45db2 | 15014 | enable_command (char *args, int from_tty) |
c906108c | 15015 | { |
c906108c | 15016 | if (args == 0) |
46c6471b PA |
15017 | { |
15018 | struct breakpoint *bpt; | |
15019 | ||
15020 | ALL_BREAKPOINTS (bpt) | |
15021 | if (user_breakpoint_p (bpt)) | |
15022 | enable_breakpoint (bpt); | |
15023 | } | |
9eaabc75 | 15024 | else |
0d381245 | 15025 | { |
9eaabc75 MW |
15026 | char *num = extract_arg (&args); |
15027 | ||
15028 | while (num) | |
d248b706 | 15029 | { |
9eaabc75 | 15030 | if (strchr (num, '.')) |
b775012e | 15031 | { |
9eaabc75 MW |
15032 | struct bp_location *loc = find_location_by_number (num); |
15033 | ||
15034 | if (loc) | |
15035 | { | |
15036 | if (!loc->enabled) | |
15037 | { | |
15038 | loc->enabled = 1; | |
15039 | mark_breakpoint_location_modified (loc); | |
15040 | } | |
15041 | if (target_supports_enable_disable_tracepoint () | |
15042 | && current_trace_status ()->running && loc->owner | |
15043 | && is_tracepoint (loc->owner)) | |
15044 | target_enable_tracepoint (loc); | |
15045 | } | |
44702360 | 15046 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 15047 | } |
9eaabc75 MW |
15048 | else |
15049 | map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL); | |
15050 | num = extract_arg (&args); | |
d248b706 | 15051 | } |
0d381245 | 15052 | } |
c906108c SS |
15053 | } |
15054 | ||
816338b5 SS |
15055 | /* This struct packages up disposition data for application to multiple |
15056 | breakpoints. */ | |
15057 | ||
15058 | struct disp_data | |
15059 | { | |
15060 | enum bpdisp disp; | |
15061 | int count; | |
15062 | }; | |
15063 | ||
c906108c | 15064 | static void |
51be5b68 PA |
15065 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
15066 | { | |
816338b5 | 15067 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 15068 | |
816338b5 | 15069 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
15070 | } |
15071 | ||
15072 | static void | |
15073 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 15074 | { |
816338b5 | 15075 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
15076 | |
15077 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
15078 | } |
15079 | ||
c906108c | 15080 | static void |
fba45db2 | 15081 | enable_once_command (char *args, int from_tty) |
c906108c | 15082 | { |
51be5b68 | 15083 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
15084 | } |
15085 | ||
816338b5 SS |
15086 | static void |
15087 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
15088 | { | |
15089 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
15090 | ||
15091 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
15092 | } | |
15093 | ||
15094 | static void | |
15095 | enable_count_command (char *args, int from_tty) | |
15096 | { | |
b9d61307 SM |
15097 | int count; |
15098 | ||
15099 | if (args == NULL) | |
15100 | error_no_arg (_("hit count")); | |
15101 | ||
15102 | count = get_number (&args); | |
816338b5 SS |
15103 | |
15104 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
15105 | } | |
15106 | ||
c906108c | 15107 | static void |
51be5b68 | 15108 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 15109 | { |
816338b5 | 15110 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
15111 | |
15112 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
15113 | } |
15114 | ||
c906108c | 15115 | static void |
fba45db2 | 15116 | enable_delete_command (char *args, int from_tty) |
c906108c | 15117 | { |
51be5b68 | 15118 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
15119 | } |
15120 | \f | |
fa8d40ab JJ |
15121 | static void |
15122 | set_breakpoint_cmd (char *args, int from_tty) | |
15123 | { | |
15124 | } | |
15125 | ||
15126 | static void | |
15127 | show_breakpoint_cmd (char *args, int from_tty) | |
15128 | { | |
15129 | } | |
15130 | ||
1f3b5d1b PP |
15131 | /* Invalidate last known value of any hardware watchpoint if |
15132 | the memory which that value represents has been written to by | |
15133 | GDB itself. */ | |
15134 | ||
15135 | static void | |
8de0566d YQ |
15136 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
15137 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
15138 | const bfd_byte *data) |
15139 | { | |
15140 | struct breakpoint *bp; | |
15141 | ||
15142 | ALL_BREAKPOINTS (bp) | |
15143 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 15144 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 15145 | { |
3a5c3e22 | 15146 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 15147 | |
3a5c3e22 PA |
15148 | if (wp->val_valid && wp->val) |
15149 | { | |
15150 | struct bp_location *loc; | |
15151 | ||
15152 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
15153 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
15154 | && loc->address + loc->length > addr | |
15155 | && addr + len > loc->address) | |
15156 | { | |
15157 | value_free (wp->val); | |
15158 | wp->val = NULL; | |
15159 | wp->val_valid = 0; | |
15160 | } | |
15161 | } | |
1f3b5d1b PP |
15162 | } |
15163 | } | |
15164 | ||
8181d85f DJ |
15165 | /* Create and insert a breakpoint for software single step. */ |
15166 | ||
15167 | void | |
6c95b8df | 15168 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
15169 | struct address_space *aspace, |
15170 | CORE_ADDR next_pc) | |
8181d85f | 15171 | { |
7c16b83e PA |
15172 | struct thread_info *tp = inferior_thread (); |
15173 | struct symtab_and_line sal; | |
15174 | CORE_ADDR pc = next_pc; | |
8181d85f | 15175 | |
34b7e8a6 PA |
15176 | if (tp->control.single_step_breakpoints == NULL) |
15177 | { | |
15178 | tp->control.single_step_breakpoints | |
5d5658a1 | 15179 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 15180 | } |
8181d85f | 15181 | |
7c16b83e PA |
15182 | sal = find_pc_line (pc, 0); |
15183 | sal.pc = pc; | |
15184 | sal.section = find_pc_overlay (pc); | |
15185 | sal.explicit_pc = 1; | |
34b7e8a6 | 15186 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 15187 | |
7c16b83e | 15188 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
15189 | } |
15190 | ||
93f9a11f YQ |
15191 | /* Insert single step breakpoints according to the current state. */ |
15192 | ||
15193 | int | |
15194 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
15195 | { | |
15196 | struct frame_info *frame = get_current_frame (); | |
15197 | VEC (CORE_ADDR) * next_pcs; | |
15198 | ||
15199 | next_pcs = gdbarch_software_single_step (gdbarch, frame); | |
15200 | ||
15201 | if (next_pcs != NULL) | |
15202 | { | |
15203 | int i; | |
15204 | CORE_ADDR pc; | |
15205 | struct address_space *aspace = get_frame_address_space (frame); | |
15206 | ||
15207 | for (i = 0; VEC_iterate (CORE_ADDR, next_pcs, i, pc); i++) | |
15208 | insert_single_step_breakpoint (gdbarch, aspace, pc); | |
15209 | ||
15210 | VEC_free (CORE_ADDR, next_pcs); | |
15211 | ||
15212 | return 1; | |
15213 | } | |
15214 | else | |
15215 | return 0; | |
15216 | } | |
15217 | ||
34b7e8a6 | 15218 | /* See breakpoint.h. */ |
f02253f1 HZ |
15219 | |
15220 | int | |
7c16b83e PA |
15221 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
15222 | struct address_space *aspace, | |
15223 | CORE_ADDR pc) | |
1aafd4da | 15224 | { |
7c16b83e | 15225 | struct bp_location *loc; |
1aafd4da | 15226 | |
7c16b83e PA |
15227 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
15228 | if (loc->inserted | |
15229 | && breakpoint_location_address_match (loc, aspace, pc)) | |
15230 | return 1; | |
1aafd4da | 15231 | |
7c16b83e | 15232 | return 0; |
ef370185 JB |
15233 | } |
15234 | ||
15235 | /* Check whether a software single-step breakpoint is inserted at | |
15236 | PC. */ | |
15237 | ||
15238 | int | |
15239 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, | |
15240 | CORE_ADDR pc) | |
15241 | { | |
34b7e8a6 PA |
15242 | struct breakpoint *bpt; |
15243 | ||
15244 | ALL_BREAKPOINTS (bpt) | |
15245 | { | |
15246 | if (bpt->type == bp_single_step | |
15247 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
15248 | return 1; | |
15249 | } | |
15250 | return 0; | |
1aafd4da UW |
15251 | } |
15252 | ||
1042e4c0 SS |
15253 | /* Tracepoint-specific operations. */ |
15254 | ||
15255 | /* Set tracepoint count to NUM. */ | |
15256 | static void | |
15257 | set_tracepoint_count (int num) | |
15258 | { | |
15259 | tracepoint_count = num; | |
4fa62494 | 15260 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
15261 | } |
15262 | ||
70221824 | 15263 | static void |
1042e4c0 SS |
15264 | trace_command (char *arg, int from_tty) |
15265 | { | |
55aa24fb | 15266 | struct breakpoint_ops *ops; |
f00aae0f KS |
15267 | struct event_location *location; |
15268 | struct cleanup *back_to; | |
55aa24fb | 15269 | |
f00aae0f KS |
15270 | location = string_to_event_location (&arg, current_language); |
15271 | back_to = make_cleanup_delete_event_location (location); | |
5b56227b KS |
15272 | if (location != NULL |
15273 | && event_location_type (location) == PROBE_LOCATION) | |
55aa24fb SDJ |
15274 | ops = &tracepoint_probe_breakpoint_ops; |
15275 | else | |
15276 | ops = &tracepoint_breakpoint_ops; | |
15277 | ||
558a9d82 | 15278 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15279 | location, |
15280 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15281 | 0 /* tempflag */, |
15282 | bp_tracepoint /* type_wanted */, | |
15283 | 0 /* Ignore count */, | |
15284 | pending_break_support, | |
15285 | ops, | |
15286 | from_tty, | |
15287 | 1 /* enabled */, | |
15288 | 0 /* internal */, 0); | |
f00aae0f | 15289 | do_cleanups (back_to); |
1042e4c0 SS |
15290 | } |
15291 | ||
70221824 | 15292 | static void |
7a697b8d SS |
15293 | ftrace_command (char *arg, int from_tty) |
15294 | { | |
f00aae0f KS |
15295 | struct event_location *location; |
15296 | struct cleanup *back_to; | |
15297 | ||
15298 | location = string_to_event_location (&arg, current_language); | |
15299 | back_to = make_cleanup_delete_event_location (location); | |
558a9d82 | 15300 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15301 | location, |
15302 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15303 | 0 /* tempflag */, |
15304 | bp_fast_tracepoint /* type_wanted */, | |
15305 | 0 /* Ignore count */, | |
15306 | pending_break_support, | |
15307 | &tracepoint_breakpoint_ops, | |
15308 | from_tty, | |
15309 | 1 /* enabled */, | |
15310 | 0 /* internal */, 0); | |
f00aae0f | 15311 | do_cleanups (back_to); |
0fb4aa4b PA |
15312 | } |
15313 | ||
15314 | /* strace command implementation. Creates a static tracepoint. */ | |
15315 | ||
70221824 | 15316 | static void |
0fb4aa4b PA |
15317 | strace_command (char *arg, int from_tty) |
15318 | { | |
983af33b | 15319 | struct breakpoint_ops *ops; |
f00aae0f KS |
15320 | struct event_location *location; |
15321 | struct cleanup *back_to; | |
983af33b SDJ |
15322 | |
15323 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15324 | or with a normal static tracepoint. */ | |
61012eef | 15325 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
15326 | { |
15327 | ops = &strace_marker_breakpoint_ops; | |
15328 | location = new_linespec_location (&arg); | |
15329 | } | |
983af33b | 15330 | else |
f00aae0f KS |
15331 | { |
15332 | ops = &tracepoint_breakpoint_ops; | |
15333 | location = string_to_event_location (&arg, current_language); | |
15334 | } | |
983af33b | 15335 | |
f00aae0f | 15336 | back_to = make_cleanup_delete_event_location (location); |
558a9d82 | 15337 | create_breakpoint (get_current_arch (), |
f00aae0f KS |
15338 | location, |
15339 | NULL, 0, arg, 1 /* parse arg */, | |
558a9d82 YQ |
15340 | 0 /* tempflag */, |
15341 | bp_static_tracepoint /* type_wanted */, | |
15342 | 0 /* Ignore count */, | |
15343 | pending_break_support, | |
15344 | ops, | |
15345 | from_tty, | |
15346 | 1 /* enabled */, | |
15347 | 0 /* internal */, 0); | |
f00aae0f | 15348 | do_cleanups (back_to); |
7a697b8d SS |
15349 | } |
15350 | ||
409873ef SS |
15351 | /* Set up a fake reader function that gets command lines from a linked |
15352 | list that was acquired during tracepoint uploading. */ | |
15353 | ||
15354 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15355 | static int next_cmd; |
409873ef SS |
15356 | |
15357 | static char * | |
15358 | read_uploaded_action (void) | |
15359 | { | |
15360 | char *rslt; | |
15361 | ||
3149d8c1 | 15362 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15363 | |
3149d8c1 | 15364 | next_cmd++; |
409873ef SS |
15365 | |
15366 | return rslt; | |
15367 | } | |
15368 | ||
00bf0b85 SS |
15369 | /* Given information about a tracepoint as recorded on a target (which |
15370 | can be either a live system or a trace file), attempt to create an | |
15371 | equivalent GDB tracepoint. This is not a reliable process, since | |
15372 | the target does not necessarily have all the information used when | |
15373 | the tracepoint was originally defined. */ | |
15374 | ||
d9b3f62e | 15375 | struct tracepoint * |
00bf0b85 | 15376 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15377 | { |
409873ef | 15378 | char *addr_str, small_buf[100]; |
d9b3f62e | 15379 | struct tracepoint *tp; |
f00aae0f KS |
15380 | struct event_location *location; |
15381 | struct cleanup *cleanup; | |
fd9b8c24 | 15382 | |
409873ef SS |
15383 | if (utp->at_string) |
15384 | addr_str = utp->at_string; | |
15385 | else | |
15386 | { | |
15387 | /* In the absence of a source location, fall back to raw | |
15388 | address. Since there is no way to confirm that the address | |
15389 | means the same thing as when the trace was started, warn the | |
15390 | user. */ | |
3e43a32a MS |
15391 | warning (_("Uploaded tracepoint %d has no " |
15392 | "source location, using raw address"), | |
409873ef | 15393 | utp->number); |
8c042590 | 15394 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15395 | addr_str = small_buf; |
15396 | } | |
15397 | ||
15398 | /* There's not much we can do with a sequence of bytecodes. */ | |
15399 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15400 | warning (_("Uploaded tracepoint %d condition " |
15401 | "has no source form, ignoring it"), | |
409873ef | 15402 | utp->number); |
d5551862 | 15403 | |
f00aae0f KS |
15404 | location = string_to_event_location (&addr_str, current_language); |
15405 | cleanup = make_cleanup_delete_event_location (location); | |
8cdf0e15 | 15406 | if (!create_breakpoint (get_current_arch (), |
f00aae0f KS |
15407 | location, |
15408 | utp->cond_string, -1, addr_str, | |
e7e0cddf | 15409 | 0 /* parse cond/thread */, |
8cdf0e15 | 15410 | 0 /* tempflag */, |
0fb4aa4b | 15411 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15412 | 0 /* Ignore count */, |
15413 | pending_break_support, | |
348d480f | 15414 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15415 | 0 /* from_tty */, |
84f4c1fe | 15416 | utp->enabled /* enabled */, |
44f238bb PA |
15417 | 0 /* internal */, |
15418 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
f00aae0f KS |
15419 | { |
15420 | do_cleanups (cleanup); | |
15421 | return NULL; | |
15422 | } | |
15423 | ||
15424 | do_cleanups (cleanup); | |
fd9b8c24 | 15425 | |
409873ef | 15426 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15427 | tp = get_tracepoint (tracepoint_count); |
15428 | gdb_assert (tp != NULL); | |
d5551862 | 15429 | |
00bf0b85 SS |
15430 | if (utp->pass > 0) |
15431 | { | |
8c042590 PM |
15432 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15433 | tp->base.number); | |
00bf0b85 | 15434 | |
409873ef | 15435 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15436 | } |
15437 | ||
409873ef SS |
15438 | /* If we have uploaded versions of the original commands, set up a |
15439 | special-purpose "reader" function and call the usual command line | |
15440 | reader, then pass the result to the breakpoint command-setting | |
15441 | function. */ | |
3149d8c1 | 15442 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15443 | { |
409873ef | 15444 | struct command_line *cmd_list; |
00bf0b85 | 15445 | |
409873ef | 15446 | this_utp = utp; |
3149d8c1 | 15447 | next_cmd = 0; |
d5551862 | 15448 | |
409873ef SS |
15449 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15450 | ||
d9b3f62e | 15451 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15452 | } |
3149d8c1 SS |
15453 | else if (!VEC_empty (char_ptr, utp->actions) |
15454 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15455 | warning (_("Uploaded tracepoint %d actions " |
15456 | "have no source form, ignoring them"), | |
409873ef | 15457 | utp->number); |
00bf0b85 | 15458 | |
f196051f SS |
15459 | /* Copy any status information that might be available. */ |
15460 | tp->base.hit_count = utp->hit_count; | |
15461 | tp->traceframe_usage = utp->traceframe_usage; | |
15462 | ||
00bf0b85 | 15463 | return tp; |
d9b3f62e | 15464 | } |
00bf0b85 | 15465 | |
1042e4c0 SS |
15466 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15467 | omitted. */ | |
15468 | ||
15469 | static void | |
e5a67952 | 15470 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15471 | { |
79a45e25 | 15472 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15473 | int num_printed; |
1042e4c0 | 15474 | |
e5a67952 | 15475 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15476 | |
15477 | if (num_printed == 0) | |
1042e4c0 | 15478 | { |
e5a67952 | 15479 | if (args == NULL || *args == '\0') |
d77f58be SS |
15480 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15481 | else | |
e5a67952 | 15482 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15483 | } |
ad443146 SS |
15484 | |
15485 | default_collect_info (); | |
1042e4c0 SS |
15486 | } |
15487 | ||
4a64f543 | 15488 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15489 | Not supported by all targets. */ |
15490 | static void | |
15491 | enable_trace_command (char *args, int from_tty) | |
15492 | { | |
15493 | enable_command (args, from_tty); | |
15494 | } | |
15495 | ||
4a64f543 | 15496 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15497 | Not supported by all targets. */ |
15498 | static void | |
15499 | disable_trace_command (char *args, int from_tty) | |
15500 | { | |
15501 | disable_command (args, from_tty); | |
15502 | } | |
15503 | ||
4a64f543 | 15504 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15505 | static void |
15506 | delete_trace_command (char *arg, int from_tty) | |
15507 | { | |
35df4500 | 15508 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15509 | |
15510 | dont_repeat (); | |
15511 | ||
15512 | if (arg == 0) | |
15513 | { | |
15514 | int breaks_to_delete = 0; | |
15515 | ||
15516 | /* Delete all breakpoints if no argument. | |
15517 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15518 | have to be deleted with an explicit breakpoint number |
15519 | argument. */ | |
1042e4c0 | 15520 | ALL_TRACEPOINTS (b) |
46c6471b | 15521 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15522 | { |
15523 | breaks_to_delete = 1; | |
15524 | break; | |
15525 | } | |
1042e4c0 SS |
15526 | |
15527 | /* Ask user only if there are some breakpoints to delete. */ | |
15528 | if (!from_tty | |
15529 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15530 | { | |
35df4500 | 15531 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15532 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15533 | delete_breakpoint (b); |
1042e4c0 SS |
15534 | } |
15535 | } | |
15536 | else | |
51be5b68 | 15537 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15538 | } |
15539 | ||
197f0a60 TT |
15540 | /* Helper function for trace_pass_command. */ |
15541 | ||
15542 | static void | |
d9b3f62e | 15543 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15544 | { |
d9b3f62e | 15545 | tp->pass_count = count; |
6f6484cd | 15546 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15547 | if (from_tty) |
15548 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15549 | tp->base.number, count); |
197f0a60 TT |
15550 | } |
15551 | ||
1042e4c0 SS |
15552 | /* Set passcount for tracepoint. |
15553 | ||
15554 | First command argument is passcount, second is tracepoint number. | |
15555 | If tracepoint number omitted, apply to most recently defined. | |
15556 | Also accepts special argument "all". */ | |
15557 | ||
15558 | static void | |
15559 | trace_pass_command (char *args, int from_tty) | |
15560 | { | |
d9b3f62e | 15561 | struct tracepoint *t1; |
1042e4c0 | 15562 | unsigned int count; |
1042e4c0 SS |
15563 | |
15564 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15565 | error (_("passcount command requires an " |
15566 | "argument (count + optional TP num)")); | |
1042e4c0 | 15567 | |
4a64f543 | 15568 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15569 | |
529480d0 | 15570 | args = skip_spaces (args); |
1042e4c0 SS |
15571 | if (*args && strncasecmp (args, "all", 3) == 0) |
15572 | { | |
d9b3f62e PA |
15573 | struct breakpoint *b; |
15574 | ||
1042e4c0 | 15575 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15576 | if (*args) |
15577 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15578 | |
d9b3f62e | 15579 | ALL_TRACEPOINTS (b) |
197f0a60 | 15580 | { |
d9b3f62e | 15581 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15582 | trace_pass_set_count (t1, count, from_tty); |
15583 | } | |
15584 | } | |
15585 | else if (*args == '\0') | |
1042e4c0 | 15586 | { |
5fa1d40e | 15587 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15588 | if (t1) |
197f0a60 TT |
15589 | trace_pass_set_count (t1, count, from_tty); |
15590 | } | |
15591 | else | |
15592 | { | |
bfd28288 PA |
15593 | number_or_range_parser parser (args); |
15594 | while (!parser.finished ()) | |
1042e4c0 | 15595 | { |
bfd28288 | 15596 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15597 | if (t1) |
15598 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15599 | } |
15600 | } | |
1042e4c0 SS |
15601 | } |
15602 | ||
d9b3f62e | 15603 | struct tracepoint * |
1042e4c0 SS |
15604 | get_tracepoint (int num) |
15605 | { | |
15606 | struct breakpoint *t; | |
15607 | ||
15608 | ALL_TRACEPOINTS (t) | |
15609 | if (t->number == num) | |
d9b3f62e | 15610 | return (struct tracepoint *) t; |
1042e4c0 SS |
15611 | |
15612 | return NULL; | |
15613 | } | |
15614 | ||
d5551862 SS |
15615 | /* Find the tracepoint with the given target-side number (which may be |
15616 | different from the tracepoint number after disconnecting and | |
15617 | reconnecting). */ | |
15618 | ||
d9b3f62e | 15619 | struct tracepoint * |
d5551862 SS |
15620 | get_tracepoint_by_number_on_target (int num) |
15621 | { | |
d9b3f62e | 15622 | struct breakpoint *b; |
d5551862 | 15623 | |
d9b3f62e PA |
15624 | ALL_TRACEPOINTS (b) |
15625 | { | |
15626 | struct tracepoint *t = (struct tracepoint *) b; | |
15627 | ||
15628 | if (t->number_on_target == num) | |
15629 | return t; | |
15630 | } | |
d5551862 SS |
15631 | |
15632 | return NULL; | |
15633 | } | |
15634 | ||
1042e4c0 | 15635 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15636 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15637 | If the argument is missing, the most recent tracepoint |
15638 | (tracepoint_count) is returned. */ | |
15639 | ||
d9b3f62e | 15640 | struct tracepoint * |
197f0a60 | 15641 | get_tracepoint_by_number (char **arg, |
bfd28288 | 15642 | number_or_range_parser *parser) |
1042e4c0 | 15643 | { |
1042e4c0 SS |
15644 | struct breakpoint *t; |
15645 | int tpnum; | |
15646 | char *instring = arg == NULL ? NULL : *arg; | |
15647 | ||
bfd28288 | 15648 | if (parser != NULL) |
197f0a60 | 15649 | { |
bfd28288 PA |
15650 | gdb_assert (!parser->finished ()); |
15651 | tpnum = parser->get_number (); | |
197f0a60 TT |
15652 | } |
15653 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15654 | tpnum = tracepoint_count; |
1042e4c0 | 15655 | else |
197f0a60 | 15656 | tpnum = get_number (arg); |
1042e4c0 SS |
15657 | |
15658 | if (tpnum <= 0) | |
15659 | { | |
15660 | if (instring && *instring) | |
15661 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15662 | instring); | |
15663 | else | |
5fa1d40e | 15664 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15665 | return NULL; |
15666 | } | |
15667 | ||
15668 | ALL_TRACEPOINTS (t) | |
15669 | if (t->number == tpnum) | |
15670 | { | |
d9b3f62e | 15671 | return (struct tracepoint *) t; |
1042e4c0 SS |
15672 | } |
15673 | ||
1042e4c0 SS |
15674 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15675 | return NULL; | |
15676 | } | |
15677 | ||
d9b3f62e PA |
15678 | void |
15679 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15680 | { | |
15681 | if (b->thread != -1) | |
15682 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15683 | ||
15684 | if (b->task != 0) | |
15685 | fprintf_unfiltered (fp, " task %d", b->task); | |
15686 | ||
15687 | fprintf_unfiltered (fp, "\n"); | |
15688 | } | |
15689 | ||
6149aea9 PA |
15690 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15691 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15692 | on each breakpoint and only include the ones for which it returns | |
15693 | non-zero. */ | |
15694 | ||
1042e4c0 | 15695 | static void |
6149aea9 PA |
15696 | save_breakpoints (char *filename, int from_tty, |
15697 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15698 | { |
15699 | struct breakpoint *tp; | |
6149aea9 | 15700 | int any = 0; |
1042e4c0 | 15701 | struct cleanup *cleanup; |
a7bdde9e | 15702 | struct ui_file *fp; |
6149aea9 | 15703 | int extra_trace_bits = 0; |
1042e4c0 | 15704 | |
6149aea9 PA |
15705 | if (filename == 0 || *filename == 0) |
15706 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15707 | |
15708 | /* See if we have anything to save. */ | |
6149aea9 | 15709 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15710 | { |
6149aea9 | 15711 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15712 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15713 | continue; |
15714 | ||
15715 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15716 | if (filter && !filter (tp)) | |
15717 | continue; | |
15718 | ||
15719 | any = 1; | |
15720 | ||
15721 | if (is_tracepoint (tp)) | |
15722 | { | |
15723 | extra_trace_bits = 1; | |
15724 | ||
15725 | /* We can stop searching. */ | |
15726 | break; | |
15727 | } | |
1042e4c0 | 15728 | } |
6149aea9 PA |
15729 | |
15730 | if (!any) | |
1042e4c0 | 15731 | { |
6149aea9 | 15732 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15733 | return; |
15734 | } | |
15735 | ||
c718be47 PA |
15736 | filename = tilde_expand (filename); |
15737 | cleanup = make_cleanup (xfree, filename); | |
15738 | fp = gdb_fopen (filename, "w"); | |
059fb39f | 15739 | if (!fp) |
6149aea9 PA |
15740 | error (_("Unable to open file '%s' for saving (%s)"), |
15741 | filename, safe_strerror (errno)); | |
a7bdde9e | 15742 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15743 | |
6149aea9 PA |
15744 | if (extra_trace_bits) |
15745 | save_trace_state_variables (fp); | |
8bf6485c | 15746 | |
6149aea9 | 15747 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15748 | { |
6149aea9 | 15749 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15750 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15751 | continue; |
8bf6485c | 15752 | |
6149aea9 PA |
15753 | /* If we have a filter, only save the breakpoints it accepts. */ |
15754 | if (filter && !filter (tp)) | |
15755 | continue; | |
15756 | ||
348d480f | 15757 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15758 | |
6149aea9 PA |
15759 | /* Note, we can't rely on tp->number for anything, as we can't |
15760 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15761 | instead. */ | |
15762 | ||
15763 | if (tp->cond_string) | |
15764 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15765 | ||
15766 | if (tp->ignore_count) | |
15767 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15768 | ||
2d9442cc | 15769 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15770 | { |
6149aea9 | 15771 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15772 | |
79a45e25 | 15773 | ui_out_redirect (current_uiout, fp); |
492d29ea | 15774 | TRY |
1042e4c0 | 15775 | { |
79a45e25 | 15776 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15777 | } |
492d29ea PA |
15778 | CATCH (ex, RETURN_MASK_ALL) |
15779 | { | |
6c63c96a | 15780 | ui_out_redirect (current_uiout, NULL); |
492d29ea PA |
15781 | throw_exception (ex); |
15782 | } | |
15783 | END_CATCH | |
1042e4c0 | 15784 | |
6c63c96a | 15785 | ui_out_redirect (current_uiout, NULL); |
a7bdde9e | 15786 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15787 | } |
6149aea9 PA |
15788 | |
15789 | if (tp->enable_state == bp_disabled) | |
99894e11 | 15790 | fprintf_unfiltered (fp, "disable $bpnum\n"); |
6149aea9 PA |
15791 | |
15792 | /* If this is a multi-location breakpoint, check if the locations | |
15793 | should be individually disabled. Watchpoint locations are | |
15794 | special, and not user visible. */ | |
15795 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15796 | { | |
15797 | struct bp_location *loc; | |
15798 | int n = 1; | |
15799 | ||
15800 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15801 | if (!loc->enabled) | |
15802 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15803 | } | |
1042e4c0 | 15804 | } |
8bf6485c | 15805 | |
6149aea9 | 15806 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15807 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15808 | ||
1042e4c0 | 15809 | if (from_tty) |
6149aea9 | 15810 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
c718be47 | 15811 | do_cleanups (cleanup); |
6149aea9 PA |
15812 | } |
15813 | ||
15814 | /* The `save breakpoints' command. */ | |
15815 | ||
15816 | static void | |
15817 | save_breakpoints_command (char *args, int from_tty) | |
15818 | { | |
15819 | save_breakpoints (args, from_tty, NULL); | |
15820 | } | |
15821 | ||
15822 | /* The `save tracepoints' command. */ | |
15823 | ||
15824 | static void | |
15825 | save_tracepoints_command (char *args, int from_tty) | |
15826 | { | |
15827 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15828 | } |
15829 | ||
15830 | /* Create a vector of all tracepoints. */ | |
15831 | ||
15832 | VEC(breakpoint_p) * | |
eeae04df | 15833 | all_tracepoints (void) |
1042e4c0 SS |
15834 | { |
15835 | VEC(breakpoint_p) *tp_vec = 0; | |
15836 | struct breakpoint *tp; | |
15837 | ||
15838 | ALL_TRACEPOINTS (tp) | |
15839 | { | |
15840 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15841 | } | |
15842 | ||
15843 | return tp_vec; | |
15844 | } | |
15845 | ||
c906108c | 15846 | \f |
629500fa KS |
15847 | /* This help string is used to consolidate all the help string for specifying |
15848 | locations used by several commands. */ | |
15849 | ||
15850 | #define LOCATION_HELP_STRING \ | |
15851 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15852 | source filename, function name, label name, and line number.\n\ | |
15853 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15854 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15855 | \"factorial.c:fact:the_top\".\n\ | |
15856 | \n\ | |
15857 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15858 | program. Example: To specify the fourth byte past the start function\n\ | |
15859 | \"main\", use \"*main + 4\".\n\ | |
15860 | \n\ | |
15861 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15862 | syntax to specify location parameters.\n\ | |
15863 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15864 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
15865 | -function fact -label the_top\".\n" | |
15866 | ||
4a64f543 MS |
15867 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15868 | commands. It is defined as a macro to prevent duplication. | |
15869 | COMMAND should be a string constant containing the name of the | |
15870 | command. */ | |
629500fa | 15871 | |
31e2b00f | 15872 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15873 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15874 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15875 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15876 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15877 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15878 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15879 | below.\n\ | |
15880 | \n\ | |
dc10affe PA |
15881 | With no LOCATION, uses current execution address of the selected\n\ |
15882 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15883 | \n\ |
15884 | THREADNUM is the number from \"info threads\".\n\ | |
15885 | CONDITION is a boolean expression.\n\ | |
629500fa | 15886 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15887 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15888 | conditions are different.\n\ | |
31e2b00f AS |
15889 | \n\ |
15890 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15891 | ||
44feb3ce TT |
15892 | /* List of subcommands for "catch". */ |
15893 | static struct cmd_list_element *catch_cmdlist; | |
15894 | ||
15895 | /* List of subcommands for "tcatch". */ | |
15896 | static struct cmd_list_element *tcatch_cmdlist; | |
15897 | ||
9ac4176b | 15898 | void |
44feb3ce | 15899 | add_catch_command (char *name, char *docstring, |
82ae6c8d | 15900 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15901 | completer_ftype *completer, |
44feb3ce TT |
15902 | void *user_data_catch, |
15903 | void *user_data_tcatch) | |
15904 | { | |
15905 | struct cmd_list_element *command; | |
15906 | ||
15907 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15908 | &catch_cmdlist); | |
15909 | set_cmd_sfunc (command, sfunc); | |
15910 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15911 | set_cmd_completer (command, completer); |
44feb3ce TT |
15912 | |
15913 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15914 | &tcatch_cmdlist); | |
15915 | set_cmd_sfunc (command, sfunc); | |
15916 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15917 | set_cmd_completer (command, completer); |
44feb3ce TT |
15918 | } |
15919 | ||
6149aea9 PA |
15920 | static void |
15921 | save_command (char *arg, int from_tty) | |
15922 | { | |
3e43a32a MS |
15923 | printf_unfiltered (_("\"save\" must be followed by " |
15924 | "the name of a save subcommand.\n")); | |
635c7e8a | 15925 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15926 | } |
15927 | ||
84f4c1fe PM |
15928 | struct breakpoint * |
15929 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15930 | void *data) | |
15931 | { | |
35df4500 | 15932 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15933 | |
35df4500 | 15934 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15935 | { |
15936 | if ((*callback) (b, data)) | |
15937 | return b; | |
15938 | } | |
15939 | ||
15940 | return NULL; | |
15941 | } | |
15942 | ||
0574c78f GB |
15943 | /* Zero if any of the breakpoint's locations could be a location where |
15944 | functions have been inlined, nonzero otherwise. */ | |
15945 | ||
15946 | static int | |
15947 | is_non_inline_function (struct breakpoint *b) | |
15948 | { | |
15949 | /* The shared library event breakpoint is set on the address of a | |
15950 | non-inline function. */ | |
15951 | if (b->type == bp_shlib_event) | |
15952 | return 1; | |
15953 | ||
15954 | return 0; | |
15955 | } | |
15956 | ||
15957 | /* Nonzero if the specified PC cannot be a location where functions | |
15958 | have been inlined. */ | |
15959 | ||
15960 | int | |
09ac7c10 TT |
15961 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15962 | const struct target_waitstatus *ws) | |
0574c78f GB |
15963 | { |
15964 | struct breakpoint *b; | |
15965 | struct bp_location *bl; | |
15966 | ||
15967 | ALL_BREAKPOINTS (b) | |
15968 | { | |
15969 | if (!is_non_inline_function (b)) | |
15970 | continue; | |
15971 | ||
15972 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15973 | { | |
15974 | if (!bl->shlib_disabled | |
09ac7c10 | 15975 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15976 | return 1; |
15977 | } | |
15978 | } | |
15979 | ||
15980 | return 0; | |
15981 | } | |
15982 | ||
2f202fde JK |
15983 | /* Remove any references to OBJFILE which is going to be freed. */ |
15984 | ||
15985 | void | |
15986 | breakpoint_free_objfile (struct objfile *objfile) | |
15987 | { | |
15988 | struct bp_location **locp, *loc; | |
15989 | ||
15990 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15991 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15992 | loc->symtab = NULL; |
15993 | } | |
15994 | ||
2060206e PA |
15995 | void |
15996 | initialize_breakpoint_ops (void) | |
15997 | { | |
15998 | static int initialized = 0; | |
15999 | ||
16000 | struct breakpoint_ops *ops; | |
16001 | ||
16002 | if (initialized) | |
16003 | return; | |
16004 | initialized = 1; | |
16005 | ||
16006 | /* The breakpoint_ops structure to be inherit by all kinds of | |
16007 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
16008 | internal and momentary breakpoints, etc.). */ | |
16009 | ops = &bkpt_base_breakpoint_ops; | |
16010 | *ops = base_breakpoint_ops; | |
16011 | ops->re_set = bkpt_re_set; | |
16012 | ops->insert_location = bkpt_insert_location; | |
16013 | ops->remove_location = bkpt_remove_location; | |
16014 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 16015 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 16016 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 16017 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
16018 | |
16019 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
16020 | ops = &bkpt_breakpoint_ops; | |
16021 | *ops = bkpt_base_breakpoint_ops; | |
16022 | ops->re_set = bkpt_re_set; | |
16023 | ops->resources_needed = bkpt_resources_needed; | |
16024 | ops->print_it = bkpt_print_it; | |
16025 | ops->print_mention = bkpt_print_mention; | |
16026 | ops->print_recreate = bkpt_print_recreate; | |
16027 | ||
16028 | /* Ranged breakpoints. */ | |
16029 | ops = &ranged_breakpoint_ops; | |
16030 | *ops = bkpt_breakpoint_ops; | |
16031 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
16032 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
16033 | ops->print_it = print_it_ranged_breakpoint; | |
16034 | ops->print_one = print_one_ranged_breakpoint; | |
16035 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
16036 | ops->print_mention = print_mention_ranged_breakpoint; | |
16037 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
16038 | ||
16039 | /* Internal breakpoints. */ | |
16040 | ops = &internal_breakpoint_ops; | |
16041 | *ops = bkpt_base_breakpoint_ops; | |
16042 | ops->re_set = internal_bkpt_re_set; | |
16043 | ops->check_status = internal_bkpt_check_status; | |
16044 | ops->print_it = internal_bkpt_print_it; | |
16045 | ops->print_mention = internal_bkpt_print_mention; | |
16046 | ||
16047 | /* Momentary breakpoints. */ | |
16048 | ops = &momentary_breakpoint_ops; | |
16049 | *ops = bkpt_base_breakpoint_ops; | |
16050 | ops->re_set = momentary_bkpt_re_set; | |
16051 | ops->check_status = momentary_bkpt_check_status; | |
16052 | ops->print_it = momentary_bkpt_print_it; | |
16053 | ops->print_mention = momentary_bkpt_print_mention; | |
16054 | ||
e2e4d78b JK |
16055 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
16056 | ops = &longjmp_breakpoint_ops; | |
16057 | *ops = momentary_breakpoint_ops; | |
16058 | ops->dtor = longjmp_bkpt_dtor; | |
16059 | ||
55aa24fb SDJ |
16060 | /* Probe breakpoints. */ |
16061 | ops = &bkpt_probe_breakpoint_ops; | |
16062 | *ops = bkpt_breakpoint_ops; | |
16063 | ops->insert_location = bkpt_probe_insert_location; | |
16064 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
16065 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
16066 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 16067 | |
2060206e PA |
16068 | /* Watchpoints. */ |
16069 | ops = &watchpoint_breakpoint_ops; | |
16070 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 16071 | ops->dtor = dtor_watchpoint; |
2060206e PA |
16072 | ops->re_set = re_set_watchpoint; |
16073 | ops->insert_location = insert_watchpoint; | |
16074 | ops->remove_location = remove_watchpoint; | |
16075 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
16076 | ops->check_status = check_status_watchpoint; | |
16077 | ops->resources_needed = resources_needed_watchpoint; | |
16078 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
16079 | ops->print_it = print_it_watchpoint; | |
16080 | ops->print_mention = print_mention_watchpoint; | |
16081 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 16082 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
16083 | |
16084 | /* Masked watchpoints. */ | |
16085 | ops = &masked_watchpoint_breakpoint_ops; | |
16086 | *ops = watchpoint_breakpoint_ops; | |
16087 | ops->insert_location = insert_masked_watchpoint; | |
16088 | ops->remove_location = remove_masked_watchpoint; | |
16089 | ops->resources_needed = resources_needed_masked_watchpoint; | |
16090 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
16091 | ops->print_it = print_it_masked_watchpoint; | |
16092 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
16093 | ops->print_mention = print_mention_masked_watchpoint; | |
16094 | ops->print_recreate = print_recreate_masked_watchpoint; | |
16095 | ||
16096 | /* Tracepoints. */ | |
16097 | ops = &tracepoint_breakpoint_ops; | |
16098 | *ops = base_breakpoint_ops; | |
16099 | ops->re_set = tracepoint_re_set; | |
16100 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
16101 | ops->print_one_detail = tracepoint_print_one_detail; | |
16102 | ops->print_mention = tracepoint_print_mention; | |
16103 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 16104 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 16105 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 16106 | ops->decode_location = tracepoint_decode_location; |
983af33b | 16107 | |
55aa24fb SDJ |
16108 | /* Probe tracepoints. */ |
16109 | ops = &tracepoint_probe_breakpoint_ops; | |
16110 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
16111 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
16112 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 16113 | |
983af33b SDJ |
16114 | /* Static tracepoints with marker (`-m'). */ |
16115 | ops = &strace_marker_breakpoint_ops; | |
16116 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 16117 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 16118 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 16119 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
16120 | |
16121 | /* Fork catchpoints. */ | |
16122 | ops = &catch_fork_breakpoint_ops; | |
16123 | *ops = base_breakpoint_ops; | |
16124 | ops->insert_location = insert_catch_fork; | |
16125 | ops->remove_location = remove_catch_fork; | |
16126 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
16127 | ops->print_it = print_it_catch_fork; | |
16128 | ops->print_one = print_one_catch_fork; | |
16129 | ops->print_mention = print_mention_catch_fork; | |
16130 | ops->print_recreate = print_recreate_catch_fork; | |
16131 | ||
16132 | /* Vfork catchpoints. */ | |
16133 | ops = &catch_vfork_breakpoint_ops; | |
16134 | *ops = base_breakpoint_ops; | |
16135 | ops->insert_location = insert_catch_vfork; | |
16136 | ops->remove_location = remove_catch_vfork; | |
16137 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
16138 | ops->print_it = print_it_catch_vfork; | |
16139 | ops->print_one = print_one_catch_vfork; | |
16140 | ops->print_mention = print_mention_catch_vfork; | |
16141 | ops->print_recreate = print_recreate_catch_vfork; | |
16142 | ||
16143 | /* Exec catchpoints. */ | |
16144 | ops = &catch_exec_breakpoint_ops; | |
16145 | *ops = base_breakpoint_ops; | |
16146 | ops->dtor = dtor_catch_exec; | |
16147 | ops->insert_location = insert_catch_exec; | |
16148 | ops->remove_location = remove_catch_exec; | |
16149 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
16150 | ops->print_it = print_it_catch_exec; | |
16151 | ops->print_one = print_one_catch_exec; | |
16152 | ops->print_mention = print_mention_catch_exec; | |
16153 | ops->print_recreate = print_recreate_catch_exec; | |
16154 | ||
edcc5120 TT |
16155 | /* Solib-related catchpoints. */ |
16156 | ops = &catch_solib_breakpoint_ops; | |
16157 | *ops = base_breakpoint_ops; | |
16158 | ops->dtor = dtor_catch_solib; | |
16159 | ops->insert_location = insert_catch_solib; | |
16160 | ops->remove_location = remove_catch_solib; | |
16161 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
16162 | ops->check_status = check_status_catch_solib; | |
16163 | ops->print_it = print_it_catch_solib; | |
16164 | ops->print_one = print_one_catch_solib; | |
16165 | ops->print_mention = print_mention_catch_solib; | |
16166 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
16167 | |
16168 | ops = &dprintf_breakpoint_ops; | |
16169 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 16170 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
16171 | ops->resources_needed = bkpt_resources_needed; |
16172 | ops->print_it = bkpt_print_it; | |
16173 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 16174 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 16175 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 16176 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
16177 | } |
16178 | ||
8bfd80db YQ |
16179 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
16180 | ||
16181 | static struct cmd_list_element *enablebreaklist = NULL; | |
16182 | ||
c906108c | 16183 | void |
fba45db2 | 16184 | _initialize_breakpoint (void) |
c906108c SS |
16185 | { |
16186 | struct cmd_list_element *c; | |
16187 | ||
2060206e PA |
16188 | initialize_breakpoint_ops (); |
16189 | ||
84acb35a | 16190 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 16191 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 16192 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 16193 | |
55aa24fb SDJ |
16194 | breakpoint_objfile_key |
16195 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 16196 | |
c906108c SS |
16197 | breakpoint_chain = 0; |
16198 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
16199 | before a breakpoint is set. */ | |
16200 | breakpoint_count = 0; | |
16201 | ||
1042e4c0 SS |
16202 | tracepoint_count = 0; |
16203 | ||
1bedd215 AC |
16204 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
16205 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
16206 | Usage is `ignore N COUNT'.")); | |
c906108c | 16207 | |
1bedd215 AC |
16208 | add_com ("commands", class_breakpoint, commands_command, _("\ |
16209 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
16210 | Give breakpoint number as argument after \"commands\".\n\ |
16211 | With no argument, the targeted breakpoint is the last one set.\n\ | |
16212 | The commands themselves follow starting on the next line.\n\ | |
16213 | Type a line containing \"end\" to indicate the end of them.\n\ | |
16214 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 16215 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 16216 | |
d55637df | 16217 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 16218 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 16219 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 16220 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 16221 | set_cmd_completer (c, condition_completer); |
c906108c | 16222 | |
1bedd215 | 16223 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 16224 | Set a temporary breakpoint.\n\ |
c906108c SS |
16225 | Like \"break\" except the breakpoint is only temporary,\n\ |
16226 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
16227 | by using \"enable delete\" on the breakpoint number.\n\ |
16228 | \n" | |
16229 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 16230 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16231 | |
1bedd215 | 16232 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 16233 | Set a hardware assisted breakpoint.\n\ |
c906108c | 16234 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
16235 | some target hardware may not have this support.\n\ |
16236 | \n" | |
16237 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 16238 | set_cmd_completer (c, location_completer); |
c906108c | 16239 | |
1bedd215 | 16240 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 16241 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 16242 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
16243 | so it will be deleted when hit.\n\ |
16244 | \n" | |
16245 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 16246 | set_cmd_completer (c, location_completer); |
c906108c | 16247 | |
1bedd215 AC |
16248 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
16249 | Enable some breakpoints.\n\ | |
c906108c SS |
16250 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16251 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16252 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16253 | With a subcommand you can enable temporarily."), |
c906108c | 16254 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
16255 | |
16256 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
16257 | ||
84951ab5 | 16258 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 16259 | Enable some breakpoints.\n\ |
c906108c SS |
16260 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16261 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16262 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 16263 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 16264 | |
1a966eab AC |
16265 | add_cmd ("once", no_class, enable_once_command, _("\ |
16266 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16267 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
16268 | &enablebreaklist); |
16269 | ||
1a966eab AC |
16270 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16271 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16272 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16273 | &enablebreaklist); |
16274 | ||
816338b5 SS |
16275 | add_cmd ("count", no_class, enable_count_command, _("\ |
16276 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16277 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16278 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16279 | &enablebreaklist); | |
16280 | ||
1a966eab AC |
16281 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16282 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16283 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16284 | &enablelist); |
16285 | ||
1a966eab AC |
16286 | add_cmd ("once", no_class, enable_once_command, _("\ |
16287 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16288 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16289 | &enablelist); |
16290 | ||
16291 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16292 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16293 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16294 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16295 | &enablelist); |
16296 | ||
1bedd215 AC |
16297 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16298 | Disable some breakpoints.\n\ | |
c906108c SS |
16299 | Arguments are breakpoint numbers with spaces in between.\n\ |
16300 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16301 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16302 | &disablelist, "disable ", 1, &cmdlist); |
16303 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16304 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 16305 | |
1a966eab AC |
16306 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16307 | Disable some breakpoints.\n\ | |
c906108c SS |
16308 | Arguments are breakpoint numbers with spaces in between.\n\ |
16309 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16310 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16311 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16312 | &disablelist); |
16313 | ||
1bedd215 AC |
16314 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16315 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16316 | Arguments are breakpoint numbers with spaces in between.\n\ |
16317 | To delete all breakpoints, give no argument.\n\ | |
16318 | \n\ | |
16319 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16320 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16321 | &deletelist, "delete ", 1, &cmdlist); |
16322 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16323 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16324 | |
1a966eab AC |
16325 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16326 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16327 | Arguments are breakpoint numbers with spaces in between.\n\ |
16328 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16329 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16330 | &deletelist); |
16331 | ||
1bedd215 | 16332 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
16333 | Clear breakpoint at specified location.\n\ |
16334 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
16335 | \n\ |
16336 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
16337 | is executing in.\n" |
16338 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 16339 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16340 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16341 | |
1bedd215 | 16342 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 16343 | Set breakpoint at specified location.\n" |
31e2b00f | 16344 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 16345 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16346 | |
c906108c SS |
16347 | add_com_alias ("b", "break", class_run, 1); |
16348 | add_com_alias ("br", "break", class_run, 1); | |
16349 | add_com_alias ("bre", "break", class_run, 1); | |
16350 | add_com_alias ("brea", "break", class_run, 1); | |
16351 | ||
c906108c SS |
16352 | if (dbx_commands) |
16353 | { | |
1bedd215 AC |
16354 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16355 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16356 | &stoplist, "stop ", 1, &cmdlist); |
16357 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16358 | _("Break in function or address."), &stoplist); |
c5aa993b | 16359 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16360 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16361 | add_com ("status", class_info, breakpoints_info, _("\ |
16362 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16363 | The \"Type\" column indicates one of:\n\ |
16364 | \tbreakpoint - normal breakpoint\n\ | |
16365 | \twatchpoint - watchpoint\n\ | |
16366 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16367 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16368 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16369 | address and file/line number respectively.\n\ |
16370 | \n\ | |
16371 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16372 | are set to the address of the last breakpoint listed unless the command\n\ |
16373 | is prefixed with \"server \".\n\n\ | |
c906108c | 16374 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16375 | breakpoint set.")); |
c906108c SS |
16376 | } |
16377 | ||
1bedd215 | 16378 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16379 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16380 | The \"Type\" column indicates one of:\n\ |
16381 | \tbreakpoint - normal breakpoint\n\ | |
16382 | \twatchpoint - watchpoint\n\ | |
16383 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16384 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16385 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16386 | address and file/line number respectively.\n\ |
16387 | \n\ | |
16388 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16389 | are set to the address of the last breakpoint listed unless the command\n\ |
16390 | is prefixed with \"server \".\n\n\ | |
c906108c | 16391 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16392 | breakpoint set.")); |
c906108c | 16393 | |
6b04bdb7 MS |
16394 | add_info_alias ("b", "breakpoints", 1); |
16395 | ||
1a966eab AC |
16396 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16397 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16398 | The \"Type\" column indicates one of:\n\ |
16399 | \tbreakpoint - normal breakpoint\n\ | |
16400 | \twatchpoint - watchpoint\n\ | |
16401 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16402 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16403 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16404 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16405 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16406 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16407 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16408 | address and file/line number respectively.\n\ |
16409 | \n\ | |
16410 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16411 | are set to the address of the last breakpoint listed unless the command\n\ |
16412 | is prefixed with \"server \".\n\n\ | |
c906108c | 16413 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16414 | breakpoint set."), |
c906108c SS |
16415 | &maintenanceinfolist); |
16416 | ||
44feb3ce TT |
16417 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16418 | Set catchpoints to catch events."), | |
16419 | &catch_cmdlist, "catch ", | |
16420 | 0/*allow-unknown*/, &cmdlist); | |
16421 | ||
16422 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16423 | Set temporary catchpoints to catch events."), | |
16424 | &tcatch_cmdlist, "tcatch ", | |
16425 | 0/*allow-unknown*/, &cmdlist); | |
16426 | ||
44feb3ce TT |
16427 | add_catch_command ("fork", _("Catch calls to fork."), |
16428 | catch_fork_command_1, | |
a96d9b2e | 16429 | NULL, |
44feb3ce TT |
16430 | (void *) (uintptr_t) catch_fork_permanent, |
16431 | (void *) (uintptr_t) catch_fork_temporary); | |
16432 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16433 | catch_fork_command_1, | |
a96d9b2e | 16434 | NULL, |
44feb3ce TT |
16435 | (void *) (uintptr_t) catch_vfork_permanent, |
16436 | (void *) (uintptr_t) catch_vfork_temporary); | |
16437 | add_catch_command ("exec", _("Catch calls to exec."), | |
16438 | catch_exec_command_1, | |
a96d9b2e SDJ |
16439 | NULL, |
16440 | CATCH_PERMANENT, | |
16441 | CATCH_TEMPORARY); | |
edcc5120 TT |
16442 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16443 | Usage: catch load [REGEX]\n\ | |
16444 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16445 | catch_load_command_1, | |
16446 | NULL, | |
16447 | CATCH_PERMANENT, | |
16448 | CATCH_TEMPORARY); | |
16449 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16450 | Usage: catch unload [REGEX]\n\ | |
16451 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16452 | catch_unload_command_1, | |
16453 | NULL, | |
16454 | CATCH_PERMANENT, | |
16455 | CATCH_TEMPORARY); | |
c5aa993b | 16456 | |
1bedd215 AC |
16457 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16458 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16459 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16460 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16461 | an expression changes.\n\ |
16462 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16463 | the memory to which it refers.")); | |
65d12d83 | 16464 | set_cmd_completer (c, expression_completer); |
c906108c | 16465 | |
1bedd215 AC |
16466 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16467 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16468 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16469 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16470 | an expression is read.\n\ |
16471 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16472 | the memory to which it refers.")); | |
65d12d83 | 16473 | set_cmd_completer (c, expression_completer); |
c906108c | 16474 | |
1bedd215 AC |
16475 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16476 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16477 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16478 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16479 | an expression is either read or written.\n\ |
16480 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16481 | the memory to which it refers.")); | |
65d12d83 | 16482 | set_cmd_completer (c, expression_completer); |
c906108c | 16483 | |
d77f58be | 16484 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16485 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16486 | |
920d2a44 AC |
16487 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16488 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16489 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16490 | &can_use_hw_watchpoints, _("\ | |
16491 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16492 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16493 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16494 | such is available. (However, any hardware watchpoints that were\n\ | |
16495 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16496 | hardware.)"), |
16497 | NULL, | |
920d2a44 | 16498 | show_can_use_hw_watchpoints, |
85c07804 | 16499 | &setlist, &showlist); |
c906108c SS |
16500 | |
16501 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16502 | |
1042e4c0 SS |
16503 | /* Tracepoint manipulation commands. */ |
16504 | ||
16505 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 16506 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
16507 | \n" |
16508 | BREAK_ARGS_HELP ("trace") "\n\ | |
16509 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16510 | set_cmd_completer (c, location_completer); | |
16511 | ||
16512 | add_com_alias ("tp", "trace", class_alias, 0); | |
16513 | add_com_alias ("tr", "trace", class_alias, 1); | |
16514 | add_com_alias ("tra", "trace", class_alias, 1); | |
16515 | add_com_alias ("trac", "trace", class_alias, 1); | |
16516 | ||
7a697b8d | 16517 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 16518 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
16519 | \n" |
16520 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16521 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16522 | set_cmd_completer (c, location_completer); | |
16523 | ||
0fb4aa4b | 16524 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 16525 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
16526 | \n\ |
16527 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
16528 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
16529 | or -m MARKER_ID.\n\n\ | |
16530 | If a marker id is specified, probe the marker with that name. With\n\ | |
16531 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
16532 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
16533 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16534 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16535 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16536 | \n\ | |
16537 | CONDITION is a boolean expression.\n\ | |
629500fa | 16538 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
16539 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16540 | conditions are different.\n\ | |
0fb4aa4b PA |
16541 | \n\ |
16542 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16543 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16544 | set_cmd_completer (c, location_completer); | |
16545 | ||
1042e4c0 | 16546 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16547 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16548 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16549 | last tracepoint set.")); | |
16550 | ||
16551 | add_info_alias ("tp", "tracepoints", 1); | |
16552 | ||
16553 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16554 | Delete specified tracepoints.\n\ | |
16555 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16556 | No argument means delete all tracepoints."), | |
16557 | &deletelist); | |
7e20dfcd | 16558 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16559 | |
16560 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16561 | Disable specified tracepoints.\n\ | |
16562 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16563 | No argument means disable all tracepoints."), | |
16564 | &disablelist); | |
16565 | deprecate_cmd (c, "disable"); | |
16566 | ||
16567 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16568 | Enable specified tracepoints.\n\ | |
16569 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16570 | No argument means enable all tracepoints."), | |
16571 | &enablelist); | |
16572 | deprecate_cmd (c, "enable"); | |
16573 | ||
16574 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16575 | Set the passcount for a tracepoint.\n\ | |
16576 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16577 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16578 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16579 | ||
6149aea9 PA |
16580 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16581 | _("Save breakpoint definitions as a script."), | |
16582 | &save_cmdlist, "save ", | |
16583 | 0/*allow-unknown*/, &cmdlist); | |
16584 | ||
16585 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16586 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16587 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16588 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16589 | session to restore them."), | |
16590 | &save_cmdlist); | |
16591 | set_cmd_completer (c, filename_completer); | |
16592 | ||
16593 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16594 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16595 | Use the 'source' command in another debug session to restore them."), |
16596 | &save_cmdlist); | |
1042e4c0 SS |
16597 | set_cmd_completer (c, filename_completer); |
16598 | ||
6149aea9 PA |
16599 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16600 | deprecate_cmd (c, "save tracepoints"); | |
16601 | ||
1bedd215 | 16602 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16603 | Breakpoint specific settings\n\ |
16604 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16605 | pending breakpoint behavior"), |
fa8d40ab JJ |
16606 | &breakpoint_set_cmdlist, "set breakpoint ", |
16607 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16608 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16609 | Breakpoint specific settings\n\ |
16610 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16611 | pending breakpoint behavior"), |
fa8d40ab JJ |
16612 | &breakpoint_show_cmdlist, "show breakpoint ", |
16613 | 0/*allow-unknown*/, &showlist); | |
16614 | ||
7915a72c AC |
16615 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16616 | &pending_break_support, _("\ | |
16617 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16618 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16619 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16620 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16621 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16622 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16623 | NULL, |
920d2a44 | 16624 | show_pending_break_support, |
6e1d7d6c AC |
16625 | &breakpoint_set_cmdlist, |
16626 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16627 | |
16628 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16629 | |
16630 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16631 | &automatic_hardware_breakpoints, _("\ | |
16632 | Set automatic usage of hardware breakpoints."), _("\ | |
16633 | Show automatic usage of hardware breakpoints."), _("\ | |
16634 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16635 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16636 | a warning will be emitted for such breakpoints."), | |
16637 | NULL, | |
16638 | show_automatic_hardware_breakpoints, | |
16639 | &breakpoint_set_cmdlist, | |
16640 | &breakpoint_show_cmdlist); | |
74960c60 | 16641 | |
a25a5a45 PA |
16642 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16643 | &always_inserted_mode, _("\ | |
74960c60 VP |
16644 | Set mode for inserting breakpoints."), _("\ |
16645 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16646 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16647 | they're created, kept inserted even when execution stops, and removed\n\ | |
16648 | only when the user deletes them. When this mode is off (the default),\n\ | |
16649 | breakpoints are inserted only when execution continues, and removed\n\ | |
16650 | when execution stops."), | |
72d0e2c5 YQ |
16651 | NULL, |
16652 | &show_always_inserted_mode, | |
16653 | &breakpoint_set_cmdlist, | |
16654 | &breakpoint_show_cmdlist); | |
f1310107 | 16655 | |
b775012e LM |
16656 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16657 | condition_evaluation_enums, | |
16658 | &condition_evaluation_mode_1, _("\ | |
16659 | Set mode of breakpoint condition evaluation."), _("\ | |
16660 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16661 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16662 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16663 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16664 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16665 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16666 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16667 | be set to \"gdb\""), | |
16668 | &set_condition_evaluation_mode, | |
16669 | &show_condition_evaluation_mode, | |
16670 | &breakpoint_set_cmdlist, | |
16671 | &breakpoint_show_cmdlist); | |
16672 | ||
f1310107 TJB |
16673 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16674 | Set a breakpoint for an address range.\n\ | |
16675 | break-range START-LOCATION, END-LOCATION\n\ | |
16676 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16677 | LINENUM, for that line in the current file,\n\ | |
16678 | FILE:LINENUM, for that line in that file,\n\ | |
16679 | +OFFSET, for that number of lines after the current line\n\ | |
16680 | or the start of the range\n\ | |
16681 | FUNCTION, for the first line in that function,\n\ | |
16682 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16683 | *ADDRESS, for the instruction at that address.\n\ | |
16684 | \n\ | |
16685 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16686 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16687 | range (including START-LOCATION and END-LOCATION).")); | |
16688 | ||
e7e0cddf | 16689 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16690 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16691 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16692 | location may be a linespec, explicit, or address location.\n" |
16693 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16694 | set_cmd_completer (c, location_completer); |
16695 | ||
16696 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16697 | dprintf_style_enums, &dprintf_style, _("\ | |
16698 | Set the style of usage for dynamic printf."), _("\ | |
16699 | Show the style of usage for dynamic printf."), _("\ | |
16700 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16701 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16702 | console, as with the \"printf\" command.\n\ | |
16703 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16704 | program; by default printf(), but you can choose a different function or\n\ | |
16705 | output stream by setting dprintf-function and dprintf-channel."), | |
16706 | update_dprintf_commands, NULL, | |
16707 | &setlist, &showlist); | |
16708 | ||
16709 | dprintf_function = xstrdup ("printf"); | |
16710 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16711 | &dprintf_function, _("\ | |
16712 | Set the function to use for dynamic printf"), _("\ | |
16713 | Show the function to use for dynamic printf"), NULL, | |
16714 | update_dprintf_commands, NULL, | |
16715 | &setlist, &showlist); | |
16716 | ||
16717 | dprintf_channel = xstrdup (""); | |
16718 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16719 | &dprintf_channel, _("\ | |
16720 | Set the channel to use for dynamic printf"), _("\ | |
16721 | Show the channel to use for dynamic printf"), NULL, | |
16722 | update_dprintf_commands, NULL, | |
16723 | &setlist, &showlist); | |
16724 | ||
d3ce09f5 SS |
16725 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16726 | &disconnected_dprintf, _("\ | |
16727 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16728 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16729 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16730 | even if GDB disconnects or detaches from the target."), | |
16731 | NULL, | |
16732 | NULL, | |
16733 | &setlist, &showlist); | |
16734 | ||
16735 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16736 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16737 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16738 | ||
765dc015 | 16739 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16740 | |
16741 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16742 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16743 | } |