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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
61baf725 | 3 | Copyright (C) 1986-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
45741a9c | 35 | #include "infrun.h" |
c906108c SS |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
38 | #include "language.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
8b93c638 | 47 | #include "ui-out.h" |
e1507482 | 48 | #include "cli/cli-script.h" |
fe898f56 | 49 | #include "block.h" |
a77053c2 | 50 | #include "solib.h" |
84acb35a JJ |
51 | #include "solist.h" |
52 | #include "observer.h" | |
765dc015 | 53 | #include "memattr.h" |
f7f9143b | 54 | #include "ada-lang.h" |
d1aa2f50 | 55 | #include "top.h" |
79a45b7d | 56 | #include "valprint.h" |
4efc6507 | 57 | #include "jit.h" |
65d79d4b | 58 | #include "parser-defs.h" |
55aa24fb SDJ |
59 | #include "gdb_regex.h" |
60 | #include "probe.h" | |
e9cafbcc | 61 | #include "cli/cli-utils.h" |
be34f849 | 62 | #include "continuations.h" |
1bfeeb0f JL |
63 | #include "stack.h" |
64 | #include "skip.h" | |
b775012e | 65 | #include "ax-gdb.h" |
e2e4d78b | 66 | #include "dummy-frame.h" |
5589af0e | 67 | #include "interps.h" |
d3ce09f5 | 68 | #include "format.h" |
cfc31633 | 69 | #include "thread-fsm.h" |
5d5658a1 | 70 | #include "tid-parse.h" |
d3ce09f5 | 71 | |
1042e4c0 SS |
72 | /* readline include files */ |
73 | #include "readline/readline.h" | |
74 | #include "readline/history.h" | |
75 | ||
76 | /* readline defines this. */ | |
77 | #undef savestring | |
78 | ||
034dad6f | 79 | #include "mi/mi-common.h" |
6dddc817 | 80 | #include "extension.h" |
325fac50 | 81 | #include <algorithm> |
5ed8105e | 82 | #include "progspace-and-thread.h" |
6c5b2ebe | 83 | #include "common/array-view.h" |
76f9c9cf | 84 | #include "common/gdb_optional.h" |
104c1213 | 85 | |
e7e8980f YQ |
86 | /* Enums for exception-handling support. */ |
87 | enum exception_event_kind | |
88 | { | |
89 | EX_EVENT_THROW, | |
591f19e8 | 90 | EX_EVENT_RETHROW, |
e7e8980f YQ |
91 | EX_EVENT_CATCH |
92 | }; | |
93 | ||
4a64f543 | 94 | /* Prototypes for local functions. */ |
c906108c | 95 | |
a14ed312 | 96 | static void disable_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void enable_command (char *, int); |
c906108c | 99 | |
896b6bda | 100 | static void map_breakpoint_numbers (const char *, |
48649e1b | 101 | gdb::function_view<void (breakpoint *)>); |
c906108c | 102 | |
a14ed312 | 103 | static void ignore_command (char *, int); |
c906108c | 104 | |
348d480f PA |
105 | static void breakpoint_re_set_default (struct breakpoint *); |
106 | ||
f00aae0f KS |
107 | static void |
108 | create_sals_from_location_default (const struct event_location *location, | |
109 | struct linespec_result *canonical, | |
110 | enum bptype type_wanted); | |
983af33b SDJ |
111 | |
112 | static void create_breakpoints_sal_default (struct gdbarch *, | |
113 | struct linespec_result *, | |
e1e01040 PA |
114 | gdb::unique_xmalloc_ptr<char>, |
115 | gdb::unique_xmalloc_ptr<char>, | |
116 | enum bptype, | |
983af33b SDJ |
117 | enum bpdisp, int, int, |
118 | int, | |
119 | const struct breakpoint_ops *, | |
44f238bb | 120 | int, int, int, unsigned); |
983af33b | 121 | |
6c5b2ebe PA |
122 | static std::vector<symtab_and_line> decode_location_default |
123 | (struct breakpoint *b, const struct event_location *location, | |
124 | struct program_space *search_pspace); | |
983af33b | 125 | |
a14ed312 | 126 | static void clear_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | static void catch_command (char *, int); |
c906108c | 129 | |
a9634178 | 130 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 131 | |
a14ed312 | 132 | static void mention (struct breakpoint *); |
c906108c | 133 | |
348d480f PA |
134 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
135 | enum bptype, | |
c0a91b2b | 136 | const struct breakpoint_ops *); |
3742cc8b YQ |
137 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
138 | const struct symtab_and_line *); | |
139 | ||
4a64f543 MS |
140 | /* This function is used in gdbtk sources and thus can not be made |
141 | static. */ | |
63c252f8 | 142 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 143 | struct symtab_and_line, |
c0a91b2b TT |
144 | enum bptype, |
145 | const struct breakpoint_ops *); | |
c906108c | 146 | |
06edf0c0 PA |
147 | static struct breakpoint * |
148 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
149 | enum bptype type, | |
a1aa2221 LM |
150 | const struct breakpoint_ops *ops, |
151 | int loc_enabled); | |
06edf0c0 | 152 | |
76897487 KB |
153 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
154 | ||
a6d9a66e UW |
155 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
156 | CORE_ADDR bpaddr, | |
88f7da05 | 157 | enum bptype bptype); |
76897487 | 158 | |
6c95b8df PA |
159 | static void describe_other_breakpoints (struct gdbarch *, |
160 | struct program_space *, CORE_ADDR, | |
5af949e3 | 161 | struct obj_section *, int); |
c906108c | 162 | |
85d721b8 PA |
163 | static int watchpoint_locations_match (struct bp_location *loc1, |
164 | struct bp_location *loc2); | |
165 | ||
f1310107 TJB |
166 | static int breakpoint_location_address_match (struct bp_location *bl, |
167 | struct address_space *aspace, | |
168 | CORE_ADDR addr); | |
169 | ||
d35ae833 PA |
170 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
171 | struct address_space *, | |
172 | CORE_ADDR, int); | |
173 | ||
11db9430 | 174 | static void info_breakpoints_command (char *, int); |
c906108c | 175 | |
11db9430 | 176 | static void info_watchpoints_command (char *, int); |
d77f58be | 177 | |
4efb68b1 | 178 | static void cleanup_executing_breakpoints (void *); |
c906108c | 179 | |
a14ed312 | 180 | static void commands_command (char *, int); |
c906108c | 181 | |
a14ed312 | 182 | static void condition_command (char *, int); |
c906108c | 183 | |
834c0d03 | 184 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 185 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 186 | |
e514a9d6 | 187 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 188 | |
a14ed312 | 189 | static int hw_breakpoint_used_count (void); |
c906108c | 190 | |
a1398e0c PA |
191 | static int hw_watchpoint_use_count (struct breakpoint *); |
192 | ||
193 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
194 | enum bptype type, | |
195 | int *other_type_used); | |
c906108c | 196 | |
a14ed312 | 197 | static void hbreak_command (char *, int); |
c906108c | 198 | |
a14ed312 | 199 | static void thbreak_command (char *, int); |
c906108c | 200 | |
816338b5 SS |
201 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
202 | int count); | |
c906108c | 203 | |
a14ed312 | 204 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 205 | |
a14ed312 | 206 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 207 | |
fe3f5fa8 | 208 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
209 | static void incref_bp_location (struct bp_location *loc); |
210 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 211 | |
39d61571 | 212 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 213 | |
44702360 PA |
214 | /* update_global_location_list's modes of operation wrt to whether to |
215 | insert locations now. */ | |
216 | enum ugll_insert_mode | |
217 | { | |
218 | /* Don't insert any breakpoint locations into the inferior, only | |
219 | remove already-inserted locations that no longer should be | |
220 | inserted. Functions that delete a breakpoint or breakpoints | |
221 | should specify this mode, so that deleting a breakpoint doesn't | |
222 | have the side effect of inserting the locations of other | |
223 | breakpoints that are marked not-inserted, but should_be_inserted | |
224 | returns true on them. | |
225 | ||
226 | This behavior is useful is situations close to tear-down -- e.g., | |
227 | after an exec, while the target still has execution, but | |
228 | breakpoint shadows of the previous executable image should *NOT* | |
229 | be restored to the new image; or before detaching, where the | |
230 | target still has execution and wants to delete breakpoints from | |
231 | GDB's lists, and all breakpoints had already been removed from | |
232 | the inferior. */ | |
233 | UGLL_DONT_INSERT, | |
234 | ||
a25a5a45 PA |
235 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
236 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
237 | UGLL_MAY_INSERT, |
238 | ||
a25a5a45 PA |
239 | /* Insert locations now, irrespective of |
240 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
241 | stopped right now, and the user did "continue". We need to | |
242 | insert breakpoints _before_ resuming the target, but | |
243 | UGLL_MAY_INSERT wouldn't insert them, because | |
244 | breakpoints_should_be_inserted_now returns false at that point, | |
245 | as no thread is running yet. */ | |
04086b45 | 246 | UGLL_INSERT |
44702360 PA |
247 | }; |
248 | ||
249 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 250 | |
44702360 | 251 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 252 | |
d77f58be | 253 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
254 | |
255 | static void insert_breakpoint_locations (void); | |
a5606eee | 256 | |
11db9430 | 257 | static void info_tracepoints_command (char *, int); |
1042e4c0 | 258 | |
1042e4c0 SS |
259 | static void enable_trace_command (char *, int); |
260 | ||
261 | static void disable_trace_command (char *, int); | |
262 | ||
263 | static void trace_pass_command (char *, int); | |
264 | ||
558a9d82 YQ |
265 | static void set_tracepoint_count (int num); |
266 | ||
9c06b0b4 TJB |
267 | static int is_masked_watchpoint (const struct breakpoint *b); |
268 | ||
b775012e LM |
269 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
270 | ||
983af33b SDJ |
271 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
272 | otherwise. */ | |
273 | ||
274 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 275 | |
2060206e PA |
276 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
277 | that are implemented on top of software or hardware breakpoints | |
278 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
279 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
280 | ||
281 | /* Internal breakpoints class type. */ | |
06edf0c0 | 282 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
283 | |
284 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
285 | static struct breakpoint_ops momentary_breakpoint_ops; |
286 | ||
2060206e PA |
287 | /* The breakpoint_ops structure to be used in regular user created |
288 | breakpoints. */ | |
289 | struct breakpoint_ops bkpt_breakpoint_ops; | |
290 | ||
55aa24fb SDJ |
291 | /* Breakpoints set on probes. */ |
292 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
293 | ||
e7e0cddf | 294 | /* Dynamic printf class type. */ |
c5867ab6 | 295 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 296 | |
d3ce09f5 SS |
297 | /* The style in which to perform a dynamic printf. This is a user |
298 | option because different output options have different tradeoffs; | |
299 | if GDB does the printing, there is better error handling if there | |
300 | is a problem with any of the arguments, but using an inferior | |
301 | function lets you have special-purpose printers and sending of | |
302 | output to the same place as compiled-in print functions. */ | |
303 | ||
304 | static const char dprintf_style_gdb[] = "gdb"; | |
305 | static const char dprintf_style_call[] = "call"; | |
306 | static const char dprintf_style_agent[] = "agent"; | |
307 | static const char *const dprintf_style_enums[] = { | |
308 | dprintf_style_gdb, | |
309 | dprintf_style_call, | |
310 | dprintf_style_agent, | |
311 | NULL | |
312 | }; | |
313 | static const char *dprintf_style = dprintf_style_gdb; | |
314 | ||
315 | /* The function to use for dynamic printf if the preferred style is to | |
316 | call into the inferior. The value is simply a string that is | |
317 | copied into the command, so it can be anything that GDB can | |
318 | evaluate to a callable address, not necessarily a function name. */ | |
319 | ||
bde6261a | 320 | static char *dprintf_function; |
d3ce09f5 SS |
321 | |
322 | /* The channel to use for dynamic printf if the preferred style is to | |
323 | call into the inferior; if a nonempty string, it will be passed to | |
324 | the call as the first argument, with the format string as the | |
325 | second. As with the dprintf function, this can be anything that | |
326 | GDB knows how to evaluate, so in addition to common choices like | |
327 | "stderr", this could be an app-specific expression like | |
328 | "mystreams[curlogger]". */ | |
329 | ||
bde6261a | 330 | static char *dprintf_channel; |
d3ce09f5 SS |
331 | |
332 | /* True if dprintf commands should continue to operate even if GDB | |
333 | has disconnected. */ | |
334 | static int disconnected_dprintf = 1; | |
335 | ||
5cea2a26 PA |
336 | struct command_line * |
337 | breakpoint_commands (struct breakpoint *b) | |
338 | { | |
d1b0a7bf | 339 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 340 | } |
3daf8fe5 | 341 | |
f3b1572e PA |
342 | /* Flag indicating that a command has proceeded the inferior past the |
343 | current breakpoint. */ | |
344 | ||
345 | static int breakpoint_proceeded; | |
346 | ||
956a9fb9 | 347 | const char * |
2cec12e5 AR |
348 | bpdisp_text (enum bpdisp disp) |
349 | { | |
4a64f543 MS |
350 | /* NOTE: the following values are a part of MI protocol and |
351 | represent values of 'disp' field returned when inferior stops at | |
352 | a breakpoint. */ | |
bc043ef3 | 353 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 354 | |
2cec12e5 AR |
355 | return bpdisps[(int) disp]; |
356 | } | |
c906108c | 357 | |
4a64f543 | 358 | /* Prototypes for exported functions. */ |
c906108c | 359 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 360 | if such is available. */ |
c906108c SS |
361 | static int can_use_hw_watchpoints; |
362 | ||
920d2a44 AC |
363 | static void |
364 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
365 | struct cmd_list_element *c, | |
366 | const char *value) | |
367 | { | |
3e43a32a MS |
368 | fprintf_filtered (file, |
369 | _("Debugger's willingness to use " | |
370 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
371 | value); |
372 | } | |
373 | ||
fa8d40ab JJ |
374 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
375 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 376 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
377 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
378 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
379 | static void |
380 | show_pending_break_support (struct ui_file *file, int from_tty, | |
381 | struct cmd_list_element *c, | |
382 | const char *value) | |
383 | { | |
3e43a32a MS |
384 | fprintf_filtered (file, |
385 | _("Debugger's behavior regarding " | |
386 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
387 | value); |
388 | } | |
fa8d40ab | 389 | |
765dc015 | 390 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 391 | set with "break" but falling in read-only memory. |
765dc015 VP |
392 | If 0, gdb will warn about such breakpoints, but won't automatically |
393 | use hardware breakpoints. */ | |
394 | static int automatic_hardware_breakpoints; | |
395 | static void | |
396 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
397 | struct cmd_list_element *c, | |
398 | const char *value) | |
399 | { | |
3e43a32a MS |
400 | fprintf_filtered (file, |
401 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
402 | value); |
403 | } | |
404 | ||
a25a5a45 PA |
405 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
406 | stopped, and immediately inserts any new breakpoints as soon as | |
407 | they're created. If off (default), GDB keeps breakpoints off of | |
408 | the target as long as possible. That is, it delays inserting | |
409 | breakpoints until the next resume, and removes them again when the | |
410 | target fully stops. This is a bit safer in case GDB crashes while | |
411 | processing user input. */ | |
412 | static int always_inserted_mode = 0; | |
72d0e2c5 | 413 | |
33e5cbd6 | 414 | static void |
74960c60 | 415 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 416 | struct cmd_list_element *c, const char *value) |
74960c60 | 417 | { |
a25a5a45 PA |
418 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
419 | value); | |
74960c60 VP |
420 | } |
421 | ||
b57bacec PA |
422 | /* See breakpoint.h. */ |
423 | ||
33e5cbd6 | 424 | int |
a25a5a45 | 425 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 426 | { |
a25a5a45 PA |
427 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
428 | { | |
429 | /* If breakpoints are global, they should be inserted even if no | |
430 | thread under gdb's control is running, or even if there are | |
431 | no threads under GDB's control yet. */ | |
432 | return 1; | |
433 | } | |
434 | else if (target_has_execution) | |
435 | { | |
372316f1 PA |
436 | struct thread_info *tp; |
437 | ||
a25a5a45 PA |
438 | if (always_inserted_mode) |
439 | { | |
440 | /* The user wants breakpoints inserted even if all threads | |
441 | are stopped. */ | |
442 | return 1; | |
443 | } | |
444 | ||
b57bacec PA |
445 | if (threads_are_executing ()) |
446 | return 1; | |
372316f1 PA |
447 | |
448 | /* Don't remove breakpoints yet if, even though all threads are | |
449 | stopped, we still have events to process. */ | |
450 | ALL_NON_EXITED_THREADS (tp) | |
451 | if (tp->resumed | |
452 | && tp->suspend.waitstatus_pending_p) | |
453 | return 1; | |
a25a5a45 PA |
454 | } |
455 | return 0; | |
33e5cbd6 | 456 | } |
765dc015 | 457 | |
b775012e LM |
458 | static const char condition_evaluation_both[] = "host or target"; |
459 | ||
460 | /* Modes for breakpoint condition evaluation. */ | |
461 | static const char condition_evaluation_auto[] = "auto"; | |
462 | static const char condition_evaluation_host[] = "host"; | |
463 | static const char condition_evaluation_target[] = "target"; | |
464 | static const char *const condition_evaluation_enums[] = { | |
465 | condition_evaluation_auto, | |
466 | condition_evaluation_host, | |
467 | condition_evaluation_target, | |
468 | NULL | |
469 | }; | |
470 | ||
471 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
472 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
473 | ||
474 | /* Global that we use to display information to the user (gets its value from | |
475 | condition_evaluation_mode_1. */ | |
476 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
477 | ||
478 | /* Translate a condition evaluation mode MODE into either "host" | |
479 | or "target". This is used mostly to translate from "auto" to the | |
480 | real setting that is being used. It returns the translated | |
481 | evaluation mode. */ | |
482 | ||
483 | static const char * | |
484 | translate_condition_evaluation_mode (const char *mode) | |
485 | { | |
486 | if (mode == condition_evaluation_auto) | |
487 | { | |
488 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
489 | return condition_evaluation_target; | |
490 | else | |
491 | return condition_evaluation_host; | |
492 | } | |
493 | else | |
494 | return mode; | |
495 | } | |
496 | ||
497 | /* Discovers what condition_evaluation_auto translates to. */ | |
498 | ||
499 | static const char * | |
500 | breakpoint_condition_evaluation_mode (void) | |
501 | { | |
502 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
503 | } | |
504 | ||
505 | /* Return true if GDB should evaluate breakpoint conditions or false | |
506 | otherwise. */ | |
507 | ||
508 | static int | |
509 | gdb_evaluates_breakpoint_condition_p (void) | |
510 | { | |
511 | const char *mode = breakpoint_condition_evaluation_mode (); | |
512 | ||
513 | return (mode == condition_evaluation_host); | |
514 | } | |
515 | ||
c906108c SS |
516 | /* Are we executing breakpoint commands? */ |
517 | static int executing_breakpoint_commands; | |
518 | ||
c02f5703 MS |
519 | /* Are overlay event breakpoints enabled? */ |
520 | static int overlay_events_enabled; | |
521 | ||
e09342b5 TJB |
522 | /* See description in breakpoint.h. */ |
523 | int target_exact_watchpoints = 0; | |
524 | ||
c906108c | 525 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 526 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 527 | current breakpoint. */ |
c906108c | 528 | |
5c44784c | 529 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 530 | |
5c44784c JM |
531 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
532 | for (B = breakpoint_chain; \ | |
533 | B ? (TMP=B->next, 1): 0; \ | |
534 | B = TMP) | |
c906108c | 535 | |
4a64f543 MS |
536 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
537 | not provided so update_global_location_list must not be called | |
538 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 539 | |
876fa593 | 540 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
541 | for (BP_TMP = bp_locations; \ |
542 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 543 | BP_TMP++) |
7cc221ef | 544 | |
b775012e LM |
545 | /* Iterates through locations with address ADDRESS for the currently selected |
546 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
547 | to where the loop should start from. | |
548 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
549 | appropriate location to start with. */ | |
550 | ||
551 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
552 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
553 | BP_LOCP_TMP = BP_LOCP_START; \ | |
554 | BP_LOCP_START \ | |
f5336ca5 | 555 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
556 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
557 | BP_LOCP_TMP++) | |
558 | ||
1042e4c0 SS |
559 | /* Iterator for tracepoints only. */ |
560 | ||
561 | #define ALL_TRACEPOINTS(B) \ | |
562 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 563 | if (is_tracepoint (B)) |
1042e4c0 | 564 | |
7cc221ef | 565 | /* Chains of all breakpoints defined. */ |
c906108c SS |
566 | |
567 | struct breakpoint *breakpoint_chain; | |
568 | ||
f5336ca5 | 569 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 570 | |
f5336ca5 | 571 | static struct bp_location **bp_locations; |
876fa593 | 572 | |
f5336ca5 | 573 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 574 | |
f5336ca5 | 575 | static unsigned bp_locations_count; |
876fa593 | 576 | |
4a64f543 | 577 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 578 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 579 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 580 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 581 | an address you need to read. */ |
876fa593 | 582 | |
f5336ca5 | 583 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 584 | |
4a64f543 MS |
585 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
586 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
587 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
588 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 589 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 590 | |
f5336ca5 | 591 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 592 | |
4a64f543 | 593 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
594 | from the bp_locations array, but for which a hit may still be |
595 | reported by a target. */ | |
20874c92 VP |
596 | VEC(bp_location_p) *moribund_locations = NULL; |
597 | ||
c906108c SS |
598 | /* Number of last breakpoint made. */ |
599 | ||
95a42b64 TT |
600 | static int breakpoint_count; |
601 | ||
86b17b60 PA |
602 | /* The value of `breakpoint_count' before the last command that |
603 | created breakpoints. If the last (break-like) command created more | |
604 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
605 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
606 | static int prev_breakpoint_count; | |
c906108c | 607 | |
1042e4c0 SS |
608 | /* Number of last tracepoint made. */ |
609 | ||
95a42b64 | 610 | static int tracepoint_count; |
1042e4c0 | 611 | |
6149aea9 PA |
612 | static struct cmd_list_element *breakpoint_set_cmdlist; |
613 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 614 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 615 | |
badd37ce SDJ |
616 | /* See declaration at breakpoint.h. */ |
617 | ||
618 | struct breakpoint * | |
619 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
620 | void *user_data) | |
621 | { | |
622 | struct breakpoint *b = NULL; | |
623 | ||
624 | ALL_BREAKPOINTS (b) | |
625 | { | |
626 | if (func (b, user_data) != 0) | |
627 | break; | |
628 | } | |
629 | ||
630 | return b; | |
631 | } | |
632 | ||
468d015d JJ |
633 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
634 | static int | |
635 | breakpoint_enabled (struct breakpoint *b) | |
636 | { | |
0d381245 | 637 | return (b->enable_state == bp_enabled); |
468d015d JJ |
638 | } |
639 | ||
c906108c SS |
640 | /* Set breakpoint count to NUM. */ |
641 | ||
95a42b64 | 642 | static void |
fba45db2 | 643 | set_breakpoint_count (int num) |
c906108c | 644 | { |
86b17b60 | 645 | prev_breakpoint_count = breakpoint_count; |
c906108c | 646 | breakpoint_count = num; |
4fa62494 | 647 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
648 | } |
649 | ||
86b17b60 PA |
650 | /* Used by `start_rbreak_breakpoints' below, to record the current |
651 | breakpoint count before "rbreak" creates any breakpoint. */ | |
652 | static int rbreak_start_breakpoint_count; | |
653 | ||
95a42b64 TT |
654 | /* Called at the start an "rbreak" command to record the first |
655 | breakpoint made. */ | |
86b17b60 | 656 | |
95a42b64 TT |
657 | void |
658 | start_rbreak_breakpoints (void) | |
659 | { | |
86b17b60 | 660 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
661 | } |
662 | ||
663 | /* Called at the end of an "rbreak" command to record the last | |
664 | breakpoint made. */ | |
86b17b60 | 665 | |
95a42b64 TT |
666 | void |
667 | end_rbreak_breakpoints (void) | |
668 | { | |
86b17b60 | 669 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
670 | } |
671 | ||
4a64f543 | 672 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
673 | |
674 | void | |
fba45db2 | 675 | clear_breakpoint_hit_counts (void) |
c906108c SS |
676 | { |
677 | struct breakpoint *b; | |
678 | ||
679 | ALL_BREAKPOINTS (b) | |
680 | b->hit_count = 0; | |
681 | } | |
682 | ||
c906108c | 683 | \f |
48cb2d85 VP |
684 | /* Return the breakpoint with the specified number, or NULL |
685 | if the number does not refer to an existing breakpoint. */ | |
686 | ||
687 | struct breakpoint * | |
688 | get_breakpoint (int num) | |
689 | { | |
690 | struct breakpoint *b; | |
691 | ||
692 | ALL_BREAKPOINTS (b) | |
693 | if (b->number == num) | |
694 | return b; | |
695 | ||
696 | return NULL; | |
697 | } | |
5c44784c | 698 | |
c906108c | 699 | \f |
adc36818 | 700 | |
b775012e LM |
701 | /* Mark locations as "conditions have changed" in case the target supports |
702 | evaluating conditions on its side. */ | |
703 | ||
704 | static void | |
705 | mark_breakpoint_modified (struct breakpoint *b) | |
706 | { | |
707 | struct bp_location *loc; | |
708 | ||
709 | /* This is only meaningful if the target is | |
710 | evaluating conditions and if the user has | |
711 | opted for condition evaluation on the target's | |
712 | side. */ | |
713 | if (gdb_evaluates_breakpoint_condition_p () | |
714 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
715 | return; | |
716 | ||
717 | if (!is_breakpoint (b)) | |
718 | return; | |
719 | ||
720 | for (loc = b->loc; loc; loc = loc->next) | |
721 | loc->condition_changed = condition_modified; | |
722 | } | |
723 | ||
724 | /* Mark location as "conditions have changed" in case the target supports | |
725 | evaluating conditions on its side. */ | |
726 | ||
727 | static void | |
728 | mark_breakpoint_location_modified (struct bp_location *loc) | |
729 | { | |
730 | /* This is only meaningful if the target is | |
731 | evaluating conditions and if the user has | |
732 | opted for condition evaluation on the target's | |
733 | side. */ | |
734 | if (gdb_evaluates_breakpoint_condition_p () | |
735 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
736 | ||
737 | return; | |
738 | ||
739 | if (!is_breakpoint (loc->owner)) | |
740 | return; | |
741 | ||
742 | loc->condition_changed = condition_modified; | |
743 | } | |
744 | ||
745 | /* Sets the condition-evaluation mode using the static global | |
746 | condition_evaluation_mode. */ | |
747 | ||
748 | static void | |
749 | set_condition_evaluation_mode (char *args, int from_tty, | |
750 | struct cmd_list_element *c) | |
751 | { | |
b775012e LM |
752 | const char *old_mode, *new_mode; |
753 | ||
754 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
755 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
756 | { | |
757 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
758 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
759 | "Using host evaluation mode instead.")); | |
760 | return; | |
761 | } | |
762 | ||
763 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
764 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
765 | ||
abf1152a JK |
766 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
767 | settings was "auto". */ | |
768 | condition_evaluation_mode = condition_evaluation_mode_1; | |
769 | ||
b775012e LM |
770 | /* Only update the mode if the user picked a different one. */ |
771 | if (new_mode != old_mode) | |
772 | { | |
773 | struct bp_location *loc, **loc_tmp; | |
774 | /* If the user switched to a different evaluation mode, we | |
775 | need to synch the changes with the target as follows: | |
776 | ||
777 | "host" -> "target": Send all (valid) conditions to the target. | |
778 | "target" -> "host": Remove all the conditions from the target. | |
779 | */ | |
780 | ||
b775012e LM |
781 | if (new_mode == condition_evaluation_target) |
782 | { | |
783 | /* Mark everything modified and synch conditions with the | |
784 | target. */ | |
785 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
786 | mark_breakpoint_location_modified (loc); | |
787 | } | |
788 | else | |
789 | { | |
790 | /* Manually mark non-duplicate locations to synch conditions | |
791 | with the target. We do this to remove all the conditions the | |
792 | target knows about. */ | |
793 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
794 | if (is_breakpoint (loc->owner) && loc->inserted) | |
795 | loc->needs_update = 1; | |
796 | } | |
797 | ||
798 | /* Do the update. */ | |
44702360 | 799 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
800 | } |
801 | ||
802 | return; | |
803 | } | |
804 | ||
805 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
806 | what "auto" is translating to. */ | |
807 | ||
808 | static void | |
809 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
810 | struct cmd_list_element *c, const char *value) | |
811 | { | |
812 | if (condition_evaluation_mode == condition_evaluation_auto) | |
813 | fprintf_filtered (file, | |
814 | _("Breakpoint condition evaluation " | |
815 | "mode is %s (currently %s).\n"), | |
816 | value, | |
817 | breakpoint_condition_evaluation_mode ()); | |
818 | else | |
819 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
820 | value); | |
821 | } | |
822 | ||
823 | /* A comparison function for bp_location AP and BP that is used by | |
824 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 825 | the more general bp_locations_compare function. */ |
b775012e LM |
826 | |
827 | static int | |
f5336ca5 | 828 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 829 | { |
9a3c8263 SM |
830 | const struct bp_location *a = *(const struct bp_location **) ap; |
831 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
832 | |
833 | if (a->address == b->address) | |
834 | return 0; | |
835 | else | |
836 | return ((a->address > b->address) - (a->address < b->address)); | |
837 | } | |
838 | ||
839 | /* Helper function to skip all bp_locations with addresses | |
840 | less than ADDRESS. It returns the first bp_location that | |
841 | is greater than or equal to ADDRESS. If none is found, just | |
842 | return NULL. */ | |
843 | ||
844 | static struct bp_location ** | |
845 | get_first_locp_gte_addr (CORE_ADDR address) | |
846 | { | |
847 | struct bp_location dummy_loc; | |
848 | struct bp_location *dummy_locp = &dummy_loc; | |
849 | struct bp_location **locp_found = NULL; | |
850 | ||
851 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
852 | dummy_loc.address = address; |
853 | ||
854 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 855 | locp_found = ((struct bp_location **) |
f5336ca5 | 856 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 857 | sizeof (struct bp_location **), |
f5336ca5 | 858 | bp_locations_compare_addrs)); |
b775012e LM |
859 | |
860 | /* Nothing was found, nothing left to do. */ | |
861 | if (locp_found == NULL) | |
862 | return NULL; | |
863 | ||
864 | /* We may have found a location that is at ADDRESS but is not the first in the | |
865 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 866 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
867 | && (*(locp_found - 1))->address == address) |
868 | locp_found--; | |
869 | ||
870 | return locp_found; | |
871 | } | |
872 | ||
adc36818 | 873 | void |
7a26bd4d | 874 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
875 | int from_tty) |
876 | { | |
3a5c3e22 PA |
877 | xfree (b->cond_string); |
878 | b->cond_string = NULL; | |
adc36818 | 879 | |
3a5c3e22 | 880 | if (is_watchpoint (b)) |
adc36818 | 881 | { |
3a5c3e22 PA |
882 | struct watchpoint *w = (struct watchpoint *) b; |
883 | ||
4d01a485 | 884 | w->cond_exp.reset (); |
3a5c3e22 PA |
885 | } |
886 | else | |
887 | { | |
888 | struct bp_location *loc; | |
889 | ||
890 | for (loc = b->loc; loc; loc = loc->next) | |
891 | { | |
4d01a485 | 892 | loc->cond.reset (); |
b775012e LM |
893 | |
894 | /* No need to free the condition agent expression | |
895 | bytecode (if we have one). We will handle this | |
896 | when we go through update_global_location_list. */ | |
3a5c3e22 | 897 | } |
adc36818 | 898 | } |
adc36818 PM |
899 | |
900 | if (*exp == 0) | |
901 | { | |
902 | if (from_tty) | |
903 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
904 | } | |
905 | else | |
906 | { | |
bbc13ae3 | 907 | const char *arg = exp; |
cc59ec59 | 908 | |
adc36818 PM |
909 | /* I don't know if it matters whether this is the string the user |
910 | typed in or the decompiled expression. */ | |
911 | b->cond_string = xstrdup (arg); | |
912 | b->condition_not_parsed = 0; | |
913 | ||
914 | if (is_watchpoint (b)) | |
915 | { | |
3a5c3e22 PA |
916 | struct watchpoint *w = (struct watchpoint *) b; |
917 | ||
adc36818 PM |
918 | innermost_block = NULL; |
919 | arg = exp; | |
1bb9788d | 920 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
921 | if (*arg) |
922 | error (_("Junk at end of expression")); | |
3a5c3e22 | 923 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
924 | } |
925 | else | |
926 | { | |
3a5c3e22 PA |
927 | struct bp_location *loc; |
928 | ||
adc36818 PM |
929 | for (loc = b->loc; loc; loc = loc->next) |
930 | { | |
931 | arg = exp; | |
932 | loc->cond = | |
1bb9788d TT |
933 | parse_exp_1 (&arg, loc->address, |
934 | block_for_pc (loc->address), 0); | |
adc36818 PM |
935 | if (*arg) |
936 | error (_("Junk at end of expression")); | |
937 | } | |
938 | } | |
939 | } | |
b775012e LM |
940 | mark_breakpoint_modified (b); |
941 | ||
8d3788bd | 942 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
943 | } |
944 | ||
d55637df TT |
945 | /* Completion for the "condition" command. */ |
946 | ||
eb3ff9a5 | 947 | static void |
6f937416 | 948 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 949 | completion_tracker &tracker, |
6f937416 | 950 | const char *text, const char *word) |
d55637df | 951 | { |
6f937416 | 952 | const char *space; |
d55637df | 953 | |
f1735a53 TT |
954 | text = skip_spaces (text); |
955 | space = skip_to_space (text); | |
d55637df TT |
956 | if (*space == '\0') |
957 | { | |
958 | int len; | |
959 | struct breakpoint *b; | |
960 | VEC (char_ptr) *result = NULL; | |
961 | ||
962 | if (text[0] == '$') | |
963 | { | |
964 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
965 | if (!isdigit (text[1])) |
966 | complete_internalvar (tracker, &text[1]); | |
967 | return; | |
d55637df TT |
968 | } |
969 | ||
970 | /* We're completing the breakpoint number. */ | |
971 | len = strlen (text); | |
972 | ||
973 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
974 | { |
975 | char number[50]; | |
976 | ||
977 | xsnprintf (number, sizeof (number), "%d", b->number); | |
978 | ||
979 | if (strncmp (number, text, len) == 0) | |
eb3ff9a5 PA |
980 | { |
981 | gdb::unique_xmalloc_ptr<char> copy (xstrdup (number)); | |
982 | tracker.add_completion (std::move (copy)); | |
983 | } | |
58ce7251 | 984 | } |
d55637df | 985 | |
eb3ff9a5 | 986 | return; |
d55637df TT |
987 | } |
988 | ||
989 | /* We're completing the expression part. */ | |
f1735a53 | 990 | text = skip_spaces (space); |
eb3ff9a5 | 991 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
992 | } |
993 | ||
c906108c SS |
994 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
995 | ||
996 | static void | |
fba45db2 | 997 | condition_command (char *arg, int from_tty) |
c906108c | 998 | { |
52f0bd74 | 999 | struct breakpoint *b; |
c906108c | 1000 | char *p; |
52f0bd74 | 1001 | int bnum; |
c906108c SS |
1002 | |
1003 | if (arg == 0) | |
e2e0b3e5 | 1004 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1005 | |
1006 | p = arg; | |
1007 | bnum = get_number (&p); | |
5c44784c | 1008 | if (bnum == 0) |
8a3fe4f8 | 1009 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1010 | |
1011 | ALL_BREAKPOINTS (b) | |
1012 | if (b->number == bnum) | |
2f069f6f | 1013 | { |
6dddc817 DE |
1014 | /* Check if this breakpoint has a "stop" method implemented in an |
1015 | extension language. This method and conditions entered into GDB | |
1016 | from the CLI are mutually exclusive. */ | |
1017 | const struct extension_language_defn *extlang | |
1018 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1019 | ||
1020 | if (extlang != NULL) | |
1021 | { | |
1022 | error (_("Only one stop condition allowed. There is currently" | |
1023 | " a %s stop condition defined for this breakpoint."), | |
1024 | ext_lang_capitalized_name (extlang)); | |
1025 | } | |
2566ad2d | 1026 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1027 | |
1028 | if (is_breakpoint (b)) | |
44702360 | 1029 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1030 | |
2f069f6f JB |
1031 | return; |
1032 | } | |
c906108c | 1033 | |
8a3fe4f8 | 1034 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1035 | } |
1036 | ||
a7bdde9e VP |
1037 | /* Check that COMMAND do not contain commands that are suitable |
1038 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1039 | Throw if any such commands is found. */ |
1040 | ||
a7bdde9e VP |
1041 | static void |
1042 | check_no_tracepoint_commands (struct command_line *commands) | |
1043 | { | |
1044 | struct command_line *c; | |
cc59ec59 | 1045 | |
a7bdde9e VP |
1046 | for (c = commands; c; c = c->next) |
1047 | { | |
1048 | int i; | |
1049 | ||
1050 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1051 | error (_("The 'while-stepping' command can " |
1052 | "only be used for tracepoints")); | |
a7bdde9e VP |
1053 | |
1054 | for (i = 0; i < c->body_count; ++i) | |
1055 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1056 | ||
1057 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1058 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1059 | command directly. */ |
1060 | if (strstr (c->line, "collect ") == c->line) | |
1061 | error (_("The 'collect' command can only be used for tracepoints")); | |
1062 | ||
51661e93 VP |
1063 | if (strstr (c->line, "teval ") == c->line) |
1064 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1065 | } |
1066 | } | |
1067 | ||
c1fc2657 | 1068 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1069 | { |
c1fc2657 | 1070 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1071 | }; |
1072 | ||
d77f58be SS |
1073 | /* Encapsulate tests for different types of tracepoints. */ |
1074 | ||
3b0871f4 SM |
1075 | static bool |
1076 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1077 | { |
1078 | return (type == bp_tracepoint | |
1079 | || type == bp_fast_tracepoint | |
1080 | || type == bp_static_tracepoint); | |
1081 | } | |
1082 | ||
3b0871f4 SM |
1083 | static bool |
1084 | is_longjmp_type (bptype type) | |
1085 | { | |
1086 | return type == bp_longjmp || type == bp_exception; | |
1087 | } | |
1088 | ||
a7bdde9e | 1089 | int |
d77f58be | 1090 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1091 | { |
d9b3f62e | 1092 | return is_tracepoint_type (b->type); |
a7bdde9e | 1093 | } |
d9b3f62e | 1094 | |
a5e364af SM |
1095 | /* Factory function to create an appropriate instance of breakpoint given |
1096 | TYPE. */ | |
1097 | ||
1098 | static std::unique_ptr<breakpoint> | |
1099 | new_breakpoint_from_type (bptype type) | |
1100 | { | |
1101 | breakpoint *b; | |
1102 | ||
1103 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1104 | b = new tracepoint (); |
3b0871f4 | 1105 | else if (is_longjmp_type (type)) |
c1fc2657 | 1106 | b = new longjmp_breakpoint (); |
a5e364af SM |
1107 | else |
1108 | b = new breakpoint (); | |
1109 | ||
1110 | return std::unique_ptr<breakpoint> (b); | |
1111 | } | |
1112 | ||
e5dd4106 | 1113 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1114 | breakpoint. This function will throw an exception if a problem is |
1115 | found. */ | |
48cb2d85 | 1116 | |
95a42b64 TT |
1117 | static void |
1118 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1119 | struct command_line *commands) | |
48cb2d85 | 1120 | { |
d77f58be | 1121 | if (is_tracepoint (b)) |
a7bdde9e | 1122 | { |
c9a6ce02 | 1123 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1124 | struct command_line *c; |
1125 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1126 | |
1127 | /* Reset the while-stepping step count. The previous commands | |
1128 | might have included a while-stepping action, while the new | |
1129 | ones might not. */ | |
1130 | t->step_count = 0; | |
1131 | ||
1132 | /* We need to verify that each top-level element of commands is | |
1133 | valid for tracepoints, that there's at most one | |
1134 | while-stepping element, and that the while-stepping's body | |
1135 | has valid tracing commands excluding nested while-stepping. | |
1136 | We also need to validate the tracepoint action line in the | |
1137 | context of the tracepoint --- validate_actionline actually | |
1138 | has side effects, like setting the tracepoint's | |
1139 | while-stepping STEP_COUNT, in addition to checking if the | |
1140 | collect/teval actions parse and make sense in the | |
1141 | tracepoint's context. */ | |
a7bdde9e VP |
1142 | for (c = commands; c; c = c->next) |
1143 | { | |
a7bdde9e VP |
1144 | if (c->control_type == while_stepping_control) |
1145 | { | |
1146 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1147 | error (_("The 'while-stepping' command " |
1148 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1149 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1150 | error (_("The 'while-stepping' command " |
1151 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1152 | |
1153 | if (while_stepping) | |
3e43a32a MS |
1154 | error (_("The 'while-stepping' command " |
1155 | "can be used only once")); | |
a7bdde9e VP |
1156 | else |
1157 | while_stepping = c; | |
1158 | } | |
c9a6ce02 PA |
1159 | |
1160 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1161 | } |
1162 | if (while_stepping) | |
1163 | { | |
1164 | struct command_line *c2; | |
1165 | ||
1166 | gdb_assert (while_stepping->body_count == 1); | |
1167 | c2 = while_stepping->body_list[0]; | |
1168 | for (; c2; c2 = c2->next) | |
1169 | { | |
a7bdde9e VP |
1170 | if (c2->control_type == while_stepping_control) |
1171 | error (_("The 'while-stepping' command cannot be nested")); | |
1172 | } | |
1173 | } | |
1174 | } | |
1175 | else | |
1176 | { | |
1177 | check_no_tracepoint_commands (commands); | |
1178 | } | |
95a42b64 TT |
1179 | } |
1180 | ||
0fb4aa4b PA |
1181 | /* Return a vector of all the static tracepoints set at ADDR. The |
1182 | caller is responsible for releasing the vector. */ | |
1183 | ||
1184 | VEC(breakpoint_p) * | |
1185 | static_tracepoints_here (CORE_ADDR addr) | |
1186 | { | |
1187 | struct breakpoint *b; | |
1188 | VEC(breakpoint_p) *found = 0; | |
1189 | struct bp_location *loc; | |
1190 | ||
1191 | ALL_BREAKPOINTS (b) | |
1192 | if (b->type == bp_static_tracepoint) | |
1193 | { | |
1194 | for (loc = b->loc; loc; loc = loc->next) | |
1195 | if (loc->address == addr) | |
1196 | VEC_safe_push(breakpoint_p, found, b); | |
1197 | } | |
1198 | ||
1199 | return found; | |
1200 | } | |
1201 | ||
95a42b64 | 1202 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1203 | validate that only allowed commands are included. */ |
95a42b64 TT |
1204 | |
1205 | void | |
4a64f543 | 1206 | breakpoint_set_commands (struct breakpoint *b, |
93921405 | 1207 | command_line_up &&commands) |
95a42b64 | 1208 | { |
93921405 | 1209 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1210 | |
d1b0a7bf | 1211 | b->commands = std::move (commands); |
8d3788bd | 1212 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1213 | } |
1214 | ||
45a43567 TT |
1215 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1216 | is not the same as the "silent" that may appear in the breakpoint's | |
1217 | commands. */ | |
1218 | ||
1219 | void | |
1220 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1221 | { | |
1222 | int old_silent = b->silent; | |
1223 | ||
1224 | b->silent = silent; | |
1225 | if (old_silent != silent) | |
8d3788bd | 1226 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1227 | } |
1228 | ||
1229 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1230 | breakpoint work for any thread. */ | |
1231 | ||
1232 | void | |
1233 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1234 | { | |
1235 | int old_thread = b->thread; | |
1236 | ||
1237 | b->thread = thread; | |
1238 | if (old_thread != thread) | |
8d3788bd | 1239 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1240 | } |
1241 | ||
1242 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1243 | breakpoint work for any task. */ | |
1244 | ||
1245 | void | |
1246 | breakpoint_set_task (struct breakpoint *b, int task) | |
1247 | { | |
1248 | int old_task = b->task; | |
1249 | ||
1250 | b->task = task; | |
1251 | if (old_task != task) | |
8d3788bd | 1252 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1253 | } |
1254 | ||
95a42b64 TT |
1255 | void |
1256 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e | 1257 | { |
9a3c8263 | 1258 | struct breakpoint *b = (struct breakpoint *) closure; |
cc59ec59 | 1259 | |
6f937416 | 1260 | validate_actionline (line, b); |
a7bdde9e VP |
1261 | } |
1262 | ||
95a42b64 | 1263 | static void |
896b6bda | 1264 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1265 | struct command_line *control) |
95a42b64 | 1266 | { |
d1b0a7bf | 1267 | counted_command_line cmd; |
95a42b64 | 1268 | |
896b6bda PA |
1269 | std::string new_arg; |
1270 | ||
95a42b64 TT |
1271 | if (arg == NULL || !*arg) |
1272 | { | |
86b17b60 | 1273 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1274 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1275 | breakpoint_count); | |
95a42b64 | 1276 | else if (breakpoint_count > 0) |
896b6bda | 1277 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1278 | arg = new_arg.c_str (); |
1279 | } | |
1280 | ||
1281 | map_breakpoint_numbers | |
1282 | (arg, [&] (breakpoint *b) | |
1283 | { | |
1284 | if (cmd == NULL) | |
1285 | { | |
48649e1b | 1286 | if (control != NULL) |
d1b0a7bf | 1287 | cmd = copy_command_lines (control->body_list[0]); |
48649e1b TT |
1288 | else |
1289 | { | |
1290 | struct cleanup *old_chain; | |
1291 | char *str; | |
1292 | ||
1293 | str = xstrprintf (_("Type commands for breakpoint(s) " | |
1294 | "%s, one per line."), | |
1295 | arg); | |
1296 | ||
1297 | old_chain = make_cleanup (xfree, str); | |
1298 | ||
d1b0a7bf TT |
1299 | cmd = read_command_lines (str, |
1300 | from_tty, 1, | |
1301 | (is_tracepoint (b) | |
1302 | ? check_tracepoint_command : 0), | |
1303 | b); | |
48649e1b TT |
1304 | |
1305 | do_cleanups (old_chain); | |
1306 | } | |
48649e1b TT |
1307 | } |
1308 | ||
1309 | /* If a breakpoint was on the list more than once, we don't need to | |
1310 | do anything. */ | |
1311 | if (b->commands != cmd) | |
1312 | { | |
d1b0a7bf | 1313 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b TT |
1314 | b->commands = cmd; |
1315 | observer_notify_breakpoint_modified (b); | |
1316 | } | |
1317 | }); | |
95a42b64 | 1318 | |
48649e1b | 1319 | if (cmd == NULL) |
95a42b64 | 1320 | error (_("No breakpoints specified.")); |
95a42b64 TT |
1321 | } |
1322 | ||
1323 | static void | |
1324 | commands_command (char *arg, int from_tty) | |
1325 | { | |
1326 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1327 | } |
40c03ae8 EZ |
1328 | |
1329 | /* Like commands_command, but instead of reading the commands from | |
1330 | input stream, takes them from an already parsed command structure. | |
1331 | ||
1332 | This is used by cli-script.c to DTRT with breakpoint commands | |
1333 | that are part of if and while bodies. */ | |
1334 | enum command_control_type | |
896b6bda | 1335 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1336 | { |
95a42b64 TT |
1337 | commands_command_1 (arg, 0, cmd); |
1338 | return simple_control; | |
40c03ae8 | 1339 | } |
876fa593 JK |
1340 | |
1341 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1342 | ||
1343 | static int | |
1344 | bp_location_has_shadow (struct bp_location *bl) | |
1345 | { | |
1346 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1347 | return 0; | |
1348 | if (!bl->inserted) | |
1349 | return 0; | |
1350 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1351 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1352 | return 0; |
1353 | return 1; | |
1354 | } | |
1355 | ||
9d497a19 PA |
1356 | /* Update BUF, which is LEN bytes read from the target address |
1357 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1358 | contents. | |
1359 | ||
1360 | If READBUF is not NULL, this buffer must not overlap with the of | |
1361 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1362 | failed assertion internal error will be raised. */ | |
1363 | ||
1364 | static void | |
1365 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1366 | const gdb_byte *writebuf_org, | |
1367 | ULONGEST memaddr, LONGEST len, | |
1368 | struct bp_target_info *target_info, | |
1369 | struct gdbarch *gdbarch) | |
1370 | { | |
1371 | /* Now do full processing of the found relevant range of elements. */ | |
1372 | CORE_ADDR bp_addr = 0; | |
1373 | int bp_size = 0; | |
1374 | int bptoffset = 0; | |
1375 | ||
1376 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1377 | current_program_space->aspace, 0)) | |
1378 | { | |
1379 | /* The breakpoint is inserted in a different address space. */ | |
1380 | return; | |
1381 | } | |
1382 | ||
1383 | /* Addresses and length of the part of the breakpoint that | |
1384 | we need to copy. */ | |
1385 | bp_addr = target_info->placed_address; | |
1386 | bp_size = target_info->shadow_len; | |
1387 | ||
1388 | if (bp_addr + bp_size <= memaddr) | |
1389 | { | |
1390 | /* The breakpoint is entirely before the chunk of memory we are | |
1391 | reading. */ | |
1392 | return; | |
1393 | } | |
1394 | ||
1395 | if (bp_addr >= memaddr + len) | |
1396 | { | |
1397 | /* The breakpoint is entirely after the chunk of memory we are | |
1398 | reading. */ | |
1399 | return; | |
1400 | } | |
1401 | ||
1402 | /* Offset within shadow_contents. */ | |
1403 | if (bp_addr < memaddr) | |
1404 | { | |
1405 | /* Only copy the second part of the breakpoint. */ | |
1406 | bp_size -= memaddr - bp_addr; | |
1407 | bptoffset = memaddr - bp_addr; | |
1408 | bp_addr = memaddr; | |
1409 | } | |
1410 | ||
1411 | if (bp_addr + bp_size > memaddr + len) | |
1412 | { | |
1413 | /* Only copy the first part of the breakpoint. */ | |
1414 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1415 | } | |
1416 | ||
1417 | if (readbuf != NULL) | |
1418 | { | |
1419 | /* Verify that the readbuf buffer does not overlap with the | |
1420 | shadow_contents buffer. */ | |
1421 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1422 | || readbuf >= (target_info->shadow_contents | |
1423 | + target_info->shadow_len)); | |
1424 | ||
1425 | /* Update the read buffer with this inserted breakpoint's | |
1426 | shadow. */ | |
1427 | memcpy (readbuf + bp_addr - memaddr, | |
1428 | target_info->shadow_contents + bptoffset, bp_size); | |
1429 | } | |
1430 | else | |
1431 | { | |
1432 | const unsigned char *bp; | |
0d5ed153 MR |
1433 | CORE_ADDR addr = target_info->reqstd_address; |
1434 | int placed_size; | |
9d497a19 PA |
1435 | |
1436 | /* Update the shadow with what we want to write to memory. */ | |
1437 | memcpy (target_info->shadow_contents + bptoffset, | |
1438 | writebuf_org + bp_addr - memaddr, bp_size); | |
1439 | ||
1440 | /* Determine appropriate breakpoint contents and size for this | |
1441 | address. */ | |
0d5ed153 | 1442 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1443 | |
1444 | /* Update the final write buffer with this inserted | |
1445 | breakpoint's INSN. */ | |
1446 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1447 | } | |
1448 | } | |
1449 | ||
8defab1a | 1450 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1451 | by replacing any memory breakpoints with their shadowed contents. |
1452 | ||
35c63cd8 JB |
1453 | If READBUF is not NULL, this buffer must not overlap with any of |
1454 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1455 | a failed assertion internal error will be raised. | |
1456 | ||
876fa593 | 1457 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1458 | bl->address - bp_locations_placed_address_before_address_max |
1459 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1460 | The range we were requested to resolve shadows for is: |
1461 | memaddr ... memaddr + len | |
1462 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1463 | memaddr + len <= (bl->address |
f5336ca5 | 1464 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1465 | and: |
f5336ca5 | 1466 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1467 | |
8defab1a | 1468 | void |
f0ba3972 PA |
1469 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1470 | const gdb_byte *writebuf_org, | |
1471 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1472 | { |
4a64f543 MS |
1473 | /* Left boundary, right boundary and median element of our binary |
1474 | search. */ | |
876fa593 JK |
1475 | unsigned bc_l, bc_r, bc; |
1476 | ||
4a64f543 MS |
1477 | /* Find BC_L which is a leftmost element which may affect BUF |
1478 | content. It is safe to report lower value but a failure to | |
1479 | report higher one. */ | |
876fa593 JK |
1480 | |
1481 | bc_l = 0; | |
f5336ca5 | 1482 | bc_r = bp_locations_count; |
876fa593 JK |
1483 | while (bc_l + 1 < bc_r) |
1484 | { | |
35df4500 | 1485 | struct bp_location *bl; |
876fa593 JK |
1486 | |
1487 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1488 | bl = bp_locations[bc]; |
876fa593 | 1489 | |
4a64f543 MS |
1490 | /* Check first BL->ADDRESS will not overflow due to the added |
1491 | constant. Then advance the left boundary only if we are sure | |
1492 | the BC element can in no way affect the BUF content (MEMADDR | |
1493 | to MEMADDR + LEN range). | |
876fa593 | 1494 | |
f5336ca5 | 1495 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1496 | offset so that we cannot miss a breakpoint with its shadow |
1497 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1498 | |
f5336ca5 | 1499 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1500 | >= bl->address) |
f5336ca5 | 1501 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1502 | <= memaddr)) |
876fa593 JK |
1503 | bc_l = bc; |
1504 | else | |
1505 | bc_r = bc; | |
1506 | } | |
1507 | ||
128070bb PA |
1508 | /* Due to the binary search above, we need to make sure we pick the |
1509 | first location that's at BC_L's address. E.g., if there are | |
1510 | multiple locations at the same address, BC_L may end up pointing | |
1511 | at a duplicate location, and miss the "master"/"inserted" | |
1512 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1513 | B: | |
1514 | ||
1515 | L1@A, L2@A, L3@B, ... | |
1516 | ||
1517 | BC_L could end up pointing at location L2, while the "master" | |
1518 | location could be L1. Since the `loc->inserted' flag is only set | |
1519 | on "master" locations, we'd forget to restore the shadow of L1 | |
1520 | and L2. */ | |
1521 | while (bc_l > 0 | |
f5336ca5 | 1522 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1523 | bc_l--; |
1524 | ||
876fa593 JK |
1525 | /* Now do full processing of the found relevant range of elements. */ |
1526 | ||
f5336ca5 | 1527 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1528 | { |
f5336ca5 | 1529 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1530 | |
35df4500 TJB |
1531 | /* bp_location array has BL->OWNER always non-NULL. */ |
1532 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1533 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1534 | bl->owner->number); |
ffce0d52 | 1535 | |
e5dd4106 | 1536 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1537 | content. */ |
1538 | ||
f5336ca5 PA |
1539 | if (bl->address >= bp_locations_placed_address_before_address_max |
1540 | && memaddr + len <= (bl->address | |
1541 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1542 | break; |
1543 | ||
35df4500 | 1544 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1545 | continue; |
6c95b8df | 1546 | |
9d497a19 PA |
1547 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1548 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1549 | } | |
c906108c | 1550 | } |
9d497a19 | 1551 | |
c906108c | 1552 | \f |
c5aa993b | 1553 | |
b775012e LM |
1554 | /* Return true if BPT is either a software breakpoint or a hardware |
1555 | breakpoint. */ | |
1556 | ||
1557 | int | |
1558 | is_breakpoint (const struct breakpoint *bpt) | |
1559 | { | |
1560 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1561 | || bpt->type == bp_hardware_breakpoint |
1562 | || bpt->type == bp_dprintf); | |
b775012e LM |
1563 | } |
1564 | ||
60e1c644 PA |
1565 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1566 | ||
a5606eee | 1567 | static int |
d77f58be | 1568 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1569 | { |
1570 | return (bpt->type == bp_hardware_watchpoint | |
1571 | || bpt->type == bp_read_watchpoint | |
1572 | || bpt->type == bp_access_watchpoint); | |
1573 | } | |
7270d8f2 | 1574 | |
60e1c644 PA |
1575 | /* Return true if BPT is of any watchpoint kind, hardware or |
1576 | software. */ | |
1577 | ||
3a5c3e22 | 1578 | int |
d77f58be | 1579 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1580 | { |
1581 | return (is_hardware_watchpoint (bpt) | |
1582 | || bpt->type == bp_watchpoint); | |
1583 | } | |
1584 | ||
3a5c3e22 PA |
1585 | /* Returns true if the current thread and its running state are safe |
1586 | to evaluate or update watchpoint B. Watchpoints on local | |
1587 | expressions need to be evaluated in the context of the thread that | |
1588 | was current when the watchpoint was created, and, that thread needs | |
1589 | to be stopped to be able to select the correct frame context. | |
1590 | Watchpoints on global expressions can be evaluated on any thread, | |
1591 | and in any state. It is presently left to the target allowing | |
1592 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1593 | |
1594 | static int | |
3a5c3e22 | 1595 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1596 | { |
c1fc2657 | 1597 | return (b->pspace == current_program_space |
d0d8b0c6 JK |
1598 | && (ptid_equal (b->watchpoint_thread, null_ptid) |
1599 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1600 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1601 | } |
1602 | ||
d0fb5eae JK |
1603 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1604 | associated bp_watchpoint_scope breakpoint. */ | |
1605 | ||
1606 | static void | |
3a5c3e22 | 1607 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1608 | { |
c1fc2657 | 1609 | if (w->related_breakpoint != w) |
d0fb5eae | 1610 | { |
c1fc2657 SM |
1611 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1612 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1613 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1614 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1615 | w->related_breakpoint = w; | |
d0fb5eae | 1616 | } |
c1fc2657 | 1617 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1618 | } |
1619 | ||
bb9d5f81 PP |
1620 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1621 | watchpoint W. */ | |
1622 | ||
1623 | static struct value * | |
1624 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1625 | { | |
1626 | struct value *bit_val; | |
1627 | ||
1628 | if (val == NULL) | |
1629 | return NULL; | |
1630 | ||
1631 | bit_val = allocate_value (value_type (val)); | |
1632 | ||
1633 | unpack_value_bitfield (bit_val, | |
1634 | w->val_bitpos, | |
1635 | w->val_bitsize, | |
1636 | value_contents_for_printing (val), | |
1637 | value_offset (val), | |
1638 | val); | |
1639 | ||
1640 | return bit_val; | |
1641 | } | |
1642 | ||
c6d81124 PA |
1643 | /* Allocate a dummy location and add it to B, which must be a software |
1644 | watchpoint. This is required because even if a software watchpoint | |
1645 | is not watching any memory, bpstat_stop_status requires a location | |
1646 | to be able to report stops. */ | |
1647 | ||
1648 | static void | |
1649 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1650 | struct program_space *pspace) | |
1651 | { | |
1652 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1653 | ||
1654 | b->loc = allocate_bp_location (b); | |
1655 | b->loc->pspace = pspace; | |
1656 | b->loc->address = -1; | |
1657 | b->loc->length = -1; | |
1658 | } | |
1659 | ||
1660 | /* Returns true if B is a software watchpoint that is not watching any | |
1661 | memory (e.g., "watch $pc"). */ | |
1662 | ||
1663 | static int | |
1664 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1665 | { | |
1666 | return (b->type == bp_watchpoint | |
1667 | && b->loc != NULL | |
1668 | && b->loc->next == NULL | |
1669 | && b->loc->address == -1 | |
1670 | && b->loc->length == -1); | |
1671 | } | |
1672 | ||
567e1b4e JB |
1673 | /* Assuming that B is a watchpoint: |
1674 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1675 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1676 | - Evaluate the condition if there is one, and store the result |
1677 | in b->loc->cond. | |
a5606eee VP |
1678 | - Update the list of values that must be watched in B->loc. |
1679 | ||
4a64f543 MS |
1680 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1681 | nothing. If this is local watchpoint that is out of scope, delete | |
1682 | it. | |
1683 | ||
1684 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1685 | removed + inserted on each stop here. Normal breakpoints must | |
1686 | never be removed because they might be missed by a running thread | |
1687 | when debugging in non-stop mode. On the other hand, hardware | |
1688 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1689 | to each LWP since they are stored in each LWP's hardware debug | |
1690 | registers. Therefore, such LWP must be stopped first in order to | |
1691 | be able to modify its hardware watchpoints. | |
1692 | ||
1693 | Hardware watchpoints must be reset exactly once after being | |
1694 | presented to the user. It cannot be done sooner, because it would | |
1695 | reset the data used to present the watchpoint hit to the user. And | |
1696 | it must not be done later because it could display the same single | |
1697 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1698 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1699 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1700 | not user-visible - its hit is suppressed if the memory content has | |
1701 | not changed. | |
1702 | ||
1703 | The following constraints influence the location where we can reset | |
1704 | hardware watchpoints: | |
1705 | ||
1706 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1707 | called several times when GDB stops. | |
1708 | ||
1709 | [linux] | |
1710 | * Multiple hardware watchpoints can be hit at the same time, | |
1711 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1712 | hit at a time as the reason for stopping, and all the other hits | |
1713 | are presented later, one after the other, each time the user | |
1714 | requests the execution to be resumed. Execution is not resumed | |
1715 | for the threads still having pending hit event stored in | |
1716 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1717 | the inferior on the first stop the thread hit event is kept being | |
1718 | reported from its cached value by linux_nat_stopped_data_address | |
1719 | until the real thread resume happens after the watchpoint gets | |
1720 | presented and thus its LWP_INFO->STATUS gets reset. | |
1721 | ||
1722 | Therefore the hardware watchpoint hit can get safely reset on the | |
1723 | watchpoint removal from inferior. */ | |
a79d3c27 | 1724 | |
b40ce68a | 1725 | static void |
3a5c3e22 | 1726 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1727 | { |
a5606eee | 1728 | int within_current_scope; |
a5606eee | 1729 | struct frame_id saved_frame_id; |
66076460 | 1730 | int frame_saved; |
a5606eee | 1731 | |
f6bc2008 PA |
1732 | /* If this is a local watchpoint, we only want to check if the |
1733 | watchpoint frame is in scope if the current thread is the thread | |
1734 | that was used to create the watchpoint. */ | |
1735 | if (!watchpoint_in_thread_scope (b)) | |
1736 | return; | |
1737 | ||
c1fc2657 | 1738 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1739 | return; |
1740 | ||
66076460 | 1741 | frame_saved = 0; |
a5606eee VP |
1742 | |
1743 | /* Determine if the watchpoint is within scope. */ | |
1744 | if (b->exp_valid_block == NULL) | |
1745 | within_current_scope = 1; | |
1746 | else | |
1747 | { | |
b5db5dfc UW |
1748 | struct frame_info *fi = get_current_frame (); |
1749 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1750 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1751 | ||
c9cf6e20 MG |
1752 | /* If we're at a point where the stack has been destroyed |
1753 | (e.g. in a function epilogue), unwinding may not work | |
1754 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1755 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1756 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1757 | return; |
66076460 DJ |
1758 | |
1759 | /* Save the current frame's ID so we can restore it after | |
1760 | evaluating the watchpoint expression on its own frame. */ | |
1761 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1762 | took a frame parameter, so that we didn't have to change the | |
1763 | selected frame. */ | |
1764 | frame_saved = 1; | |
1765 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1766 | ||
a5606eee VP |
1767 | fi = frame_find_by_id (b->watchpoint_frame); |
1768 | within_current_scope = (fi != NULL); | |
1769 | if (within_current_scope) | |
1770 | select_frame (fi); | |
1771 | } | |
1772 | ||
b5db5dfc UW |
1773 | /* We don't free locations. They are stored in the bp_location array |
1774 | and update_global_location_list will eventually delete them and | |
1775 | remove breakpoints if needed. */ | |
c1fc2657 | 1776 | b->loc = NULL; |
b5db5dfc | 1777 | |
a5606eee VP |
1778 | if (within_current_scope && reparse) |
1779 | { | |
bbc13ae3 | 1780 | const char *s; |
d63d0675 | 1781 | |
4d01a485 | 1782 | b->exp.reset (); |
d63d0675 | 1783 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1784 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1785 | /* If the meaning of expression itself changed, the old value is |
1786 | no longer relevant. We don't want to report a watchpoint hit | |
1787 | to the user when the old value and the new value may actually | |
1788 | be completely different objects. */ | |
1789 | value_free (b->val); | |
fa4727a6 DJ |
1790 | b->val = NULL; |
1791 | b->val_valid = 0; | |
60e1c644 PA |
1792 | |
1793 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1794 | expression is stored in the breakpoint object, not in the | |
1795 | locations (re)created below. */ | |
c1fc2657 | 1796 | if (b->cond_string != NULL) |
60e1c644 | 1797 | { |
4d01a485 | 1798 | b->cond_exp.reset (); |
60e1c644 | 1799 | |
c1fc2657 | 1800 | s = b->cond_string; |
1bb9788d | 1801 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1802 | } |
a5606eee | 1803 | } |
a5606eee VP |
1804 | |
1805 | /* If we failed to parse the expression, for example because | |
1806 | it refers to a global variable in a not-yet-loaded shared library, | |
1807 | don't try to insert watchpoint. We don't automatically delete | |
1808 | such watchpoint, though, since failure to parse expression | |
1809 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1810 | if (!target_has_execution) |
2d134ed3 PA |
1811 | { |
1812 | /* Without execution, memory can't change. No use to try and | |
1813 | set watchpoint locations. The watchpoint will be reset when | |
1814 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1815 | if (!can_use_hw_watchpoints) |
1816 | { | |
c1fc2657 SM |
1817 | if (b->ops->works_in_software_mode (b)) |
1818 | b->type = bp_watchpoint; | |
e8369a73 | 1819 | else |
638aa5a1 AB |
1820 | error (_("Can't set read/access watchpoint when " |
1821 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1822 | } |
2d134ed3 PA |
1823 | } |
1824 | else if (within_current_scope && b->exp) | |
a5606eee | 1825 | { |
0cf6dd15 | 1826 | int pc = 0; |
fa4727a6 | 1827 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1828 | struct program_space *frame_pspace; |
a5606eee | 1829 | |
4d01a485 | 1830 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1831 | |
a5606eee VP |
1832 | /* Avoid setting b->val if it's already set. The meaning of |
1833 | b->val is 'the last value' user saw, and we should update | |
1834 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1835 | happens, the code that reports it updates b->val directly. |
1836 | We don't keep track of the memory value for masked | |
1837 | watchpoints. */ | |
c1fc2657 | 1838 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1839 | { |
bb9d5f81 PP |
1840 | if (b->val_bitsize != 0) |
1841 | { | |
1842 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1843 | if (v != NULL) | |
1844 | release_value (v); | |
1845 | } | |
fa4727a6 DJ |
1846 | b->val = v; |
1847 | b->val_valid = 1; | |
1848 | } | |
a5606eee | 1849 | |
2d134ed3 PA |
1850 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1851 | ||
a5606eee | 1852 | /* Look at each value on the value chain. */ |
9fa40276 | 1853 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1854 | { |
1855 | /* If it's a memory location, and GDB actually needed | |
1856 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1857 | must watch it. If the first value returned is |
1858 | still lazy, that means an error occurred reading it; | |
1859 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1860 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1861 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1862 | { |
1863 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1864 | |
a5606eee VP |
1865 | /* We only watch structs and arrays if user asked |
1866 | for it explicitly, never if they just happen to | |
1867 | appear in the middle of some value chain. */ | |
fa4727a6 | 1868 | if (v == result |
a5606eee VP |
1869 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1870 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1871 | { | |
1872 | CORE_ADDR addr; | |
f486487f | 1873 | enum target_hw_bp_type type; |
a5606eee | 1874 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1875 | int bitpos = 0, bitsize = 0; |
1876 | ||
1877 | if (value_bitsize (v) != 0) | |
1878 | { | |
1879 | /* Extract the bit parameters out from the bitfield | |
1880 | sub-expression. */ | |
1881 | bitpos = value_bitpos (v); | |
1882 | bitsize = value_bitsize (v); | |
1883 | } | |
1884 | else if (v == result && b->val_bitsize != 0) | |
1885 | { | |
1886 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1887 | lvalue whose bit parameters are saved in the fields | |
1888 | VAL_BITPOS and VAL_BITSIZE. */ | |
1889 | bitpos = b->val_bitpos; | |
1890 | bitsize = b->val_bitsize; | |
1891 | } | |
a5606eee | 1892 | |
42ae5230 | 1893 | addr = value_address (v); |
bb9d5f81 PP |
1894 | if (bitsize != 0) |
1895 | { | |
1896 | /* Skip the bytes that don't contain the bitfield. */ | |
1897 | addr += bitpos / 8; | |
1898 | } | |
1899 | ||
a5606eee | 1900 | type = hw_write; |
c1fc2657 | 1901 | if (b->type == bp_read_watchpoint) |
a5606eee | 1902 | type = hw_read; |
c1fc2657 | 1903 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1904 | type = hw_access; |
3a5c3e22 | 1905 | |
c1fc2657 SM |
1906 | loc = allocate_bp_location (b); |
1907 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1908 | ; |
1909 | *tmp = loc; | |
a6d9a66e | 1910 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1911 | |
1912 | loc->pspace = frame_pspace; | |
a5606eee | 1913 | loc->address = addr; |
bb9d5f81 PP |
1914 | |
1915 | if (bitsize != 0) | |
1916 | { | |
1917 | /* Just cover the bytes that make up the bitfield. */ | |
1918 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1919 | } | |
1920 | else | |
1921 | loc->length = TYPE_LENGTH (value_type (v)); | |
1922 | ||
a5606eee VP |
1923 | loc->watchpoint_type = type; |
1924 | } | |
1925 | } | |
9fa40276 TJB |
1926 | } |
1927 | ||
1928 | /* Change the type of breakpoint between hardware assisted or | |
1929 | an ordinary watchpoint depending on the hardware support | |
1930 | and free hardware slots. REPARSE is set when the inferior | |
1931 | is started. */ | |
a9634178 | 1932 | if (reparse) |
9fa40276 | 1933 | { |
e09342b5 | 1934 | int reg_cnt; |
9fa40276 TJB |
1935 | enum bp_loc_type loc_type; |
1936 | struct bp_location *bl; | |
a5606eee | 1937 | |
a9634178 | 1938 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1939 | |
1940 | if (reg_cnt) | |
9fa40276 TJB |
1941 | { |
1942 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1943 | enum bptype type; |
9fa40276 | 1944 | |
a9634178 TJB |
1945 | /* Use an exact watchpoint when there's only one memory region to be |
1946 | watched, and only one debug register is needed to watch it. */ | |
1947 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1948 | ||
9fa40276 | 1949 | /* We need to determine how many resources are already |
e09342b5 TJB |
1950 | used for all other hardware watchpoints plus this one |
1951 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1952 | this watchpoint in as well. */ |
1953 | ||
1954 | /* If this is a software watchpoint, we try to turn it | |
1955 | to a hardware one -- count resources as if B was of | |
1956 | hardware watchpoint type. */ | |
c1fc2657 | 1957 | type = b->type; |
a1398e0c PA |
1958 | if (type == bp_watchpoint) |
1959 | type = bp_hardware_watchpoint; | |
1960 | ||
1961 | /* This watchpoint may or may not have been placed on | |
1962 | the list yet at this point (it won't be in the list | |
1963 | if we're trying to create it for the first time, | |
1964 | through watch_command), so always account for it | |
1965 | manually. */ | |
1966 | ||
1967 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1968 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1969 | |
1970 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1971 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1972 | |
1973 | target_resources_ok | |
1974 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1975 | if (target_resources_ok <= 0) |
a9634178 | 1976 | { |
c1fc2657 | 1977 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1978 | |
1979 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1980 | error (_("Target does not support this type of " |
1981 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1982 | else if (target_resources_ok < 0 && !sw_mode) |
1983 | error (_("There are not enough available hardware " | |
1984 | "resources for this watchpoint.")); | |
a1398e0c PA |
1985 | |
1986 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1987 | b->type = bp_watchpoint; |
a1398e0c PA |
1988 | } |
1989 | else | |
1990 | { | |
1991 | /* If this was a software watchpoint, we've just | |
1992 | found we have enough resources to turn it to a | |
1993 | hardware watchpoint. Otherwise, this is a | |
1994 | nop. */ | |
c1fc2657 | 1995 | b->type = type; |
a9634178 | 1996 | } |
9fa40276 | 1997 | } |
c1fc2657 | 1998 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1999 | { |
2000 | if (!can_use_hw_watchpoints) | |
2001 | error (_("Can't set read/access watchpoint when " | |
2002 | "hardware watchpoints are disabled.")); | |
2003 | else | |
2004 | error (_("Expression cannot be implemented with " | |
2005 | "read/access watchpoint.")); | |
2006 | } | |
9fa40276 | 2007 | else |
c1fc2657 | 2008 | b->type = bp_watchpoint; |
9fa40276 | 2009 | |
c1fc2657 | 2010 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2011 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 2012 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
2013 | bl->loc_type = loc_type; |
2014 | } | |
2015 | ||
2016 | for (v = val_chain; v; v = next) | |
2017 | { | |
a5606eee VP |
2018 | next = value_next (v); |
2019 | if (v != b->val) | |
2020 | value_free (v); | |
2021 | } | |
2022 | ||
c7437ca6 PA |
2023 | /* If a software watchpoint is not watching any memory, then the |
2024 | above left it without any location set up. But, | |
2025 | bpstat_stop_status requires a location to be able to report | |
2026 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2027 | if (b->type == bp_watchpoint && b->loc == NULL) |
2028 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2029 | } |
2030 | else if (!within_current_scope) | |
7270d8f2 | 2031 | { |
ac74f770 MS |
2032 | printf_filtered (_("\ |
2033 | Watchpoint %d deleted because the program has left the block\n\ | |
2034 | in which its expression is valid.\n"), | |
c1fc2657 | 2035 | b->number); |
d0fb5eae | 2036 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2037 | } |
a5606eee VP |
2038 | |
2039 | /* Restore the selected frame. */ | |
66076460 DJ |
2040 | if (frame_saved) |
2041 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2042 | } |
2043 | ||
a5606eee | 2044 | |
74960c60 | 2045 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2046 | inserted in the inferior. We don't differentiate the type of BL's owner |
2047 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2048 | breakpoint_ops is not defined, because in insert_bp_location, | |
2049 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2050 | static int |
35df4500 | 2051 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2052 | { |
35df4500 | 2053 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2054 | return 0; |
2055 | ||
35df4500 | 2056 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2057 | return 0; |
2058 | ||
35df4500 | 2059 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2060 | return 0; |
2061 | ||
f8eba3c6 TT |
2062 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2063 | return 0; | |
2064 | ||
56710373 PA |
2065 | /* This is set for example, when we're attached to the parent of a |
2066 | vfork, and have detached from the child. The child is running | |
2067 | free, and we expect it to do an exec or exit, at which point the | |
2068 | OS makes the parent schedulable again (and the target reports | |
2069 | that the vfork is done). Until the child is done with the shared | |
2070 | memory region, do not insert breakpoints in the parent, otherwise | |
2071 | the child could still trip on the parent's breakpoints. Since | |
2072 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2073 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2074 | return 0; |
2075 | ||
31e77af2 | 2076 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2077 | location, except if the breakpoint is a single-step breakpoint, |
2078 | and the breakpoint's thread is the thread which is stepping past | |
2079 | a breakpoint. */ | |
31e77af2 PA |
2080 | if ((bl->loc_type == bp_loc_software_breakpoint |
2081 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2082 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2083 | bl->address) |
2084 | /* The single-step breakpoint may be inserted at the location | |
2085 | we're trying to step if the instruction branches to itself. | |
2086 | However, the instruction won't be executed at all and it may | |
2087 | break the semantics of the instruction, for example, the | |
2088 | instruction is a conditional branch or updates some flags. | |
2089 | We can't fix it unless GDB is able to emulate the instruction | |
2090 | or switch to displaced stepping. */ | |
2091 | && !(bl->owner->type == bp_single_step | |
2092 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2093 | { |
2094 | if (debug_infrun) | |
2095 | { | |
2096 | fprintf_unfiltered (gdb_stdlog, | |
2097 | "infrun: skipping breakpoint: " | |
2098 | "stepping past insn at: %s\n", | |
2099 | paddress (bl->gdbarch, bl->address)); | |
2100 | } | |
2101 | return 0; | |
2102 | } | |
31e77af2 | 2103 | |
963f9c80 PA |
2104 | /* Don't insert watchpoints if we're trying to step past the |
2105 | instruction that triggered one. */ | |
2106 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2107 | && stepping_past_nonsteppable_watchpoint ()) | |
2108 | { | |
2109 | if (debug_infrun) | |
2110 | { | |
2111 | fprintf_unfiltered (gdb_stdlog, | |
2112 | "infrun: stepping past non-steppable watchpoint. " | |
2113 | "skipping watchpoint at %s:%d\n", | |
2114 | paddress (bl->gdbarch, bl->address), | |
2115 | bl->length); | |
2116 | } | |
2117 | return 0; | |
2118 | } | |
2119 | ||
74960c60 VP |
2120 | return 1; |
2121 | } | |
2122 | ||
934709f0 PW |
2123 | /* Same as should_be_inserted but does the check assuming |
2124 | that the location is not duplicated. */ | |
2125 | ||
2126 | static int | |
2127 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2128 | { | |
2129 | int result; | |
2130 | const int save_duplicate = bl->duplicate; | |
2131 | ||
2132 | bl->duplicate = 0; | |
2133 | result = should_be_inserted (bl); | |
2134 | bl->duplicate = save_duplicate; | |
2135 | return result; | |
2136 | } | |
2137 | ||
b775012e LM |
2138 | /* Parses a conditional described by an expression COND into an |
2139 | agent expression bytecode suitable for evaluation | |
2140 | by the bytecode interpreter. Return NULL if there was | |
2141 | any error during parsing. */ | |
2142 | ||
833177a4 | 2143 | static agent_expr_up |
b775012e LM |
2144 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2145 | { | |
833177a4 | 2146 | if (cond == NULL) |
b775012e LM |
2147 | return NULL; |
2148 | ||
833177a4 PA |
2149 | agent_expr_up aexpr; |
2150 | ||
b775012e LM |
2151 | /* We don't want to stop processing, so catch any errors |
2152 | that may show up. */ | |
492d29ea | 2153 | TRY |
b775012e | 2154 | { |
036e657b | 2155 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2156 | } |
2157 | ||
492d29ea | 2158 | CATCH (ex, RETURN_MASK_ERROR) |
b775012e LM |
2159 | { |
2160 | /* If we got here, it means the condition could not be parsed to a valid | |
2161 | bytecode expression and thus can't be evaluated on the target's side. | |
2162 | It's no use iterating through the conditions. */ | |
b775012e | 2163 | } |
492d29ea | 2164 | END_CATCH |
b775012e LM |
2165 | |
2166 | /* We have a valid agent expression. */ | |
2167 | return aexpr; | |
2168 | } | |
2169 | ||
2170 | /* Based on location BL, create a list of breakpoint conditions to be | |
2171 | passed on to the target. If we have duplicated locations with different | |
2172 | conditions, we will add such conditions to the list. The idea is that the | |
2173 | target will evaluate the list of conditions and will only notify GDB when | |
2174 | one of them is true. */ | |
2175 | ||
2176 | static void | |
2177 | build_target_condition_list (struct bp_location *bl) | |
2178 | { | |
2179 | struct bp_location **locp = NULL, **loc2p; | |
2180 | int null_condition_or_parse_error = 0; | |
2181 | int modified = bl->needs_update; | |
2182 | struct bp_location *loc; | |
2183 | ||
8b4f3082 | 2184 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2185 | bl->target_info.conditions.clear (); |
8b4f3082 | 2186 | |
b775012e LM |
2187 | /* This is only meaningful if the target is |
2188 | evaluating conditions and if the user has | |
2189 | opted for condition evaluation on the target's | |
2190 | side. */ | |
2191 | if (gdb_evaluates_breakpoint_condition_p () | |
2192 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2193 | return; | |
2194 | ||
2195 | /* Do a first pass to check for locations with no assigned | |
2196 | conditions or conditions that fail to parse to a valid agent expression | |
2197 | bytecode. If any of these happen, then it's no use to send conditions | |
2198 | to the target since this location will always trigger and generate a | |
2199 | response back to GDB. */ | |
2200 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2201 | { | |
2202 | loc = (*loc2p); | |
2203 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2204 | { | |
2205 | if (modified) | |
2206 | { | |
b775012e LM |
2207 | /* Re-parse the conditions since something changed. In that |
2208 | case we already freed the condition bytecodes (see | |
2209 | force_breakpoint_reinsertion). We just | |
2210 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2211 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2212 | loc->cond.get ()); | |
b775012e LM |
2213 | } |
2214 | ||
2215 | /* If we have a NULL bytecode expression, it means something | |
2216 | went wrong or we have a null condition expression. */ | |
2217 | if (!loc->cond_bytecode) | |
2218 | { | |
2219 | null_condition_or_parse_error = 1; | |
2220 | break; | |
2221 | } | |
2222 | } | |
2223 | } | |
2224 | ||
2225 | /* If any of these happened, it means we will have to evaluate the conditions | |
2226 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2227 | for all the other duplicate locations, thus we free all of them here. | |
2228 | ||
2229 | This is so we have a finer control over which locations' conditions are | |
2230 | being evaluated by GDB or the remote stub. */ | |
2231 | if (null_condition_or_parse_error) | |
2232 | { | |
2233 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2234 | { | |
2235 | loc = (*loc2p); | |
2236 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2237 | { | |
2238 | /* Only go as far as the first NULL bytecode is | |
2239 | located. */ | |
2240 | if (!loc->cond_bytecode) | |
2241 | return; | |
2242 | ||
833177a4 | 2243 | loc->cond_bytecode.reset (); |
b775012e LM |
2244 | } |
2245 | } | |
2246 | } | |
2247 | ||
2248 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2249 | for this location's address. */ | |
2250 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2251 | { | |
2252 | loc = (*loc2p); | |
2253 | if (loc->cond | |
2254 | && is_breakpoint (loc->owner) | |
2255 | && loc->pspace->num == bl->pspace->num | |
2256 | && loc->owner->enable_state == bp_enabled | |
2257 | && loc->enabled) | |
3cde5c42 PA |
2258 | { |
2259 | /* Add the condition to the vector. This will be used later | |
2260 | to send the conditions to the target. */ | |
2261 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2262 | } | |
b775012e LM |
2263 | } |
2264 | ||
2265 | return; | |
2266 | } | |
2267 | ||
d3ce09f5 SS |
2268 | /* Parses a command described by string CMD into an agent expression |
2269 | bytecode suitable for evaluation by the bytecode interpreter. | |
2270 | Return NULL if there was any error during parsing. */ | |
2271 | ||
833177a4 | 2272 | static agent_expr_up |
d3ce09f5 SS |
2273 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2274 | { | |
2275 | struct cleanup *old_cleanups = 0; | |
4d01a485 | 2276 | struct expression **argvec; |
bbc13ae3 KS |
2277 | const char *cmdrest; |
2278 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2279 | struct format_piece *fpieces; |
2280 | int nargs; | |
2281 | struct gdbarch *gdbarch = get_current_arch (); | |
2282 | ||
833177a4 | 2283 | if (cmd == NULL) |
d3ce09f5 SS |
2284 | return NULL; |
2285 | ||
2286 | cmdrest = cmd; | |
2287 | ||
2288 | if (*cmdrest == ',') | |
2289 | ++cmdrest; | |
f1735a53 | 2290 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2291 | |
2292 | if (*cmdrest++ != '"') | |
2293 | error (_("No format string following the location")); | |
2294 | ||
2295 | format_start = cmdrest; | |
2296 | ||
2297 | fpieces = parse_format_string (&cmdrest); | |
2298 | ||
2299 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2300 | ||
2301 | format_end = cmdrest; | |
2302 | ||
2303 | if (*cmdrest++ != '"') | |
2304 | error (_("Bad format string, non-terminated '\"'.")); | |
2305 | ||
f1735a53 | 2306 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2307 | |
2308 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2309 | error (_("Invalid argument syntax")); | |
2310 | ||
2311 | if (*cmdrest == ',') | |
2312 | cmdrest++; | |
f1735a53 | 2313 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2314 | |
2315 | /* For each argument, make an expression. */ | |
2316 | ||
2317 | argvec = (struct expression **) alloca (strlen (cmd) | |
2318 | * sizeof (struct expression *)); | |
2319 | ||
2320 | nargs = 0; | |
2321 | while (*cmdrest != '\0') | |
2322 | { | |
bbc13ae3 | 2323 | const char *cmd1; |
d3ce09f5 SS |
2324 | |
2325 | cmd1 = cmdrest; | |
4d01a485 PA |
2326 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
2327 | argvec[nargs++] = expr.release (); | |
d3ce09f5 SS |
2328 | cmdrest = cmd1; |
2329 | if (*cmdrest == ',') | |
2330 | ++cmdrest; | |
2331 | } | |
2332 | ||
833177a4 PA |
2333 | agent_expr_up aexpr; |
2334 | ||
d3ce09f5 SS |
2335 | /* We don't want to stop processing, so catch any errors |
2336 | that may show up. */ | |
492d29ea | 2337 | TRY |
d3ce09f5 | 2338 | { |
036e657b JB |
2339 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2340 | format_start, format_end - format_start, | |
2341 | fpieces, nargs, argvec); | |
d3ce09f5 | 2342 | } |
492d29ea | 2343 | CATCH (ex, RETURN_MASK_ERROR) |
d3ce09f5 SS |
2344 | { |
2345 | /* If we got here, it means the command could not be parsed to a valid | |
2346 | bytecode expression and thus can't be evaluated on the target's side. | |
2347 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2348 | } |
492d29ea PA |
2349 | END_CATCH |
2350 | ||
2351 | do_cleanups (old_cleanups); | |
d3ce09f5 | 2352 | |
d3ce09f5 SS |
2353 | /* We have a valid agent expression, return it. */ |
2354 | return aexpr; | |
2355 | } | |
2356 | ||
2357 | /* Based on location BL, create a list of breakpoint commands to be | |
2358 | passed on to the target. If we have duplicated locations with | |
2359 | different commands, we will add any such to the list. */ | |
2360 | ||
2361 | static void | |
2362 | build_target_command_list (struct bp_location *bl) | |
2363 | { | |
2364 | struct bp_location **locp = NULL, **loc2p; | |
2365 | int null_command_or_parse_error = 0; | |
2366 | int modified = bl->needs_update; | |
2367 | struct bp_location *loc; | |
2368 | ||
3cde5c42 PA |
2369 | /* Clear commands left over from a previous insert. */ |
2370 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2371 | |
41fac0cf | 2372 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2373 | return; |
2374 | ||
41fac0cf PA |
2375 | /* For now, limit to agent-style dprintf breakpoints. */ |
2376 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2377 | return; |
2378 | ||
41fac0cf PA |
2379 | /* For now, if we have any duplicate location that isn't a dprintf, |
2380 | don't install the target-side commands, as that would make the | |
2381 | breakpoint not be reported to the core, and we'd lose | |
2382 | control. */ | |
2383 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2384 | { | |
2385 | loc = (*loc2p); | |
2386 | if (is_breakpoint (loc->owner) | |
2387 | && loc->pspace->num == bl->pspace->num | |
2388 | && loc->owner->type != bp_dprintf) | |
2389 | return; | |
2390 | } | |
2391 | ||
d3ce09f5 SS |
2392 | /* Do a first pass to check for locations with no assigned |
2393 | conditions or conditions that fail to parse to a valid agent expression | |
2394 | bytecode. If any of these happen, then it's no use to send conditions | |
2395 | to the target since this location will always trigger and generate a | |
2396 | response back to GDB. */ | |
2397 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2398 | { | |
2399 | loc = (*loc2p); | |
2400 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2401 | { | |
2402 | if (modified) | |
2403 | { | |
d3ce09f5 SS |
2404 | /* Re-parse the commands since something changed. In that |
2405 | case we already freed the command bytecodes (see | |
2406 | force_breakpoint_reinsertion). We just | |
2407 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2408 | loc->cmd_bytecode |
2409 | = parse_cmd_to_aexpr (bl->address, | |
2410 | loc->owner->extra_string); | |
d3ce09f5 SS |
2411 | } |
2412 | ||
2413 | /* If we have a NULL bytecode expression, it means something | |
2414 | went wrong or we have a null command expression. */ | |
2415 | if (!loc->cmd_bytecode) | |
2416 | { | |
2417 | null_command_or_parse_error = 1; | |
2418 | break; | |
2419 | } | |
2420 | } | |
2421 | } | |
2422 | ||
2423 | /* If anything failed, then we're not doing target-side commands, | |
2424 | and so clean up. */ | |
2425 | if (null_command_or_parse_error) | |
2426 | { | |
2427 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2428 | { | |
2429 | loc = (*loc2p); | |
2430 | if (is_breakpoint (loc->owner) | |
2431 | && loc->pspace->num == bl->pspace->num) | |
2432 | { | |
2433 | /* Only go as far as the first NULL bytecode is | |
2434 | located. */ | |
40fb6c5e | 2435 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2436 | return; |
2437 | ||
833177a4 | 2438 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2439 | } |
2440 | } | |
2441 | } | |
2442 | ||
2443 | /* No NULL commands or failed bytecode generation. Build a command list | |
2444 | for this location's address. */ | |
2445 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2446 | { | |
2447 | loc = (*loc2p); | |
2448 | if (loc->owner->extra_string | |
2449 | && is_breakpoint (loc->owner) | |
2450 | && loc->pspace->num == bl->pspace->num | |
2451 | && loc->owner->enable_state == bp_enabled | |
2452 | && loc->enabled) | |
3cde5c42 PA |
2453 | { |
2454 | /* Add the command to the vector. This will be used later | |
2455 | to send the commands to the target. */ | |
2456 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2457 | } | |
d3ce09f5 SS |
2458 | } |
2459 | ||
2460 | bl->target_info.persist = 0; | |
2461 | /* Maybe flag this location as persistent. */ | |
2462 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2463 | bl->target_info.persist = 1; | |
2464 | } | |
2465 | ||
833b7ab5 YQ |
2466 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2467 | of breakpoint according to ADDR except single-step breakpoint. | |
2468 | Get the kind of single-step breakpoint according to the current | |
2469 | registers state. */ | |
cd6c3b4f YQ |
2470 | |
2471 | static int | |
2472 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2473 | { | |
833b7ab5 YQ |
2474 | if (bl->owner->type == bp_single_step) |
2475 | { | |
2476 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2477 | struct regcache *regcache; | |
2478 | ||
2479 | regcache = get_thread_regcache (thr->ptid); | |
2480 | ||
2481 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2482 | regcache, addr); | |
2483 | } | |
2484 | else | |
2485 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2486 | } |
2487 | ||
35df4500 TJB |
2488 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2489 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2490 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2491 | Returns 0 for success, 1 if the bp_location type is not supported or |
2492 | -1 for failure. | |
879bfdc2 | 2493 | |
4a64f543 MS |
2494 | NOTE drow/2003-09-09: This routine could be broken down to an |
2495 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2496 | static int |
35df4500 | 2497 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2498 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2499 | int *disabled_breaks, |
dd61ec5c MW |
2500 | int *hw_breakpoint_error, |
2501 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2502 | { |
0000e5cc PA |
2503 | enum errors bp_err = GDB_NO_ERROR; |
2504 | const char *bp_err_message = NULL; | |
879bfdc2 | 2505 | |
b775012e | 2506 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2507 | return 0; |
2508 | ||
35c63cd8 JB |
2509 | /* Note we don't initialize bl->target_info, as that wipes out |
2510 | the breakpoint location's shadow_contents if the breakpoint | |
2511 | is still inserted at that location. This in turn breaks | |
2512 | target_read_memory which depends on these buffers when | |
2513 | a memory read is requested at the breakpoint location: | |
2514 | Once the target_info has been wiped, we fail to see that | |
2515 | we have a breakpoint inserted at that address and thus | |
2516 | read the breakpoint instead of returning the data saved in | |
2517 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2518 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2519 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2520 | bl->target_info.length = bl->length; |
8181d85f | 2521 | |
b775012e LM |
2522 | /* When working with target-side conditions, we must pass all the conditions |
2523 | for the same breakpoint address down to the target since GDB will not | |
2524 | insert those locations. With a list of breakpoint conditions, the target | |
2525 | can decide when to stop and notify GDB. */ | |
2526 | ||
2527 | if (is_breakpoint (bl->owner)) | |
2528 | { | |
2529 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2530 | build_target_command_list (bl); |
2531 | /* Reset the modification marker. */ | |
b775012e LM |
2532 | bl->needs_update = 0; |
2533 | } | |
2534 | ||
35df4500 TJB |
2535 | if (bl->loc_type == bp_loc_software_breakpoint |
2536 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2537 | { |
35df4500 | 2538 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2539 | { |
2540 | /* If the explicitly specified breakpoint type | |
2541 | is not hardware breakpoint, check the memory map to see | |
2542 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2543 | |
765dc015 VP |
2544 | Two important cases are: |
2545 | - location type is not hardware breakpoint, memory | |
2546 | is readonly. We change the type of the location to | |
2547 | hardware breakpoint. | |
4a64f543 MS |
2548 | - location type is hardware breakpoint, memory is |
2549 | read-write. This means we've previously made the | |
2550 | location hardware one, but then the memory map changed, | |
2551 | so we undo. | |
765dc015 | 2552 | |
4a64f543 MS |
2553 | When breakpoints are removed, remove_breakpoints will use |
2554 | location types we've just set here, the only possible | |
2555 | problem is that memory map has changed during running | |
2556 | program, but it's not going to work anyway with current | |
2557 | gdb. */ | |
765dc015 | 2558 | struct mem_region *mr |
0d5ed153 | 2559 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2560 | |
2561 | if (mr) | |
2562 | { | |
2563 | if (automatic_hardware_breakpoints) | |
2564 | { | |
765dc015 VP |
2565 | enum bp_loc_type new_type; |
2566 | ||
2567 | if (mr->attrib.mode != MEM_RW) | |
2568 | new_type = bp_loc_hardware_breakpoint; | |
2569 | else | |
2570 | new_type = bp_loc_software_breakpoint; | |
2571 | ||
35df4500 | 2572 | if (new_type != bl->loc_type) |
765dc015 VP |
2573 | { |
2574 | static int said = 0; | |
cc59ec59 | 2575 | |
35df4500 | 2576 | bl->loc_type = new_type; |
765dc015 VP |
2577 | if (!said) |
2578 | { | |
3e43a32a MS |
2579 | fprintf_filtered (gdb_stdout, |
2580 | _("Note: automatically using " | |
2581 | "hardware breakpoints for " | |
2582 | "read-only addresses.\n")); | |
765dc015 VP |
2583 | said = 1; |
2584 | } | |
2585 | } | |
2586 | } | |
35df4500 | 2587 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2588 | && mr->attrib.mode != MEM_RW) |
2589 | { | |
2590 | fprintf_unfiltered (tmp_error_stream, | |
2591 | _("Cannot insert breakpoint %d.\n" | |
2592 | "Cannot set software breakpoint " | |
2593 | "at read-only address %s\n"), | |
2594 | bl->owner->number, | |
2595 | paddress (bl->gdbarch, bl->address)); | |
2596 | return 1; | |
2597 | } | |
765dc015 VP |
2598 | } |
2599 | } | |
2600 | ||
879bfdc2 DJ |
2601 | /* First check to see if we have to handle an overlay. */ |
2602 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2603 | || bl->section == NULL |
2604 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2605 | { |
2606 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2607 | TRY |
dd61ec5c | 2608 | { |
0000e5cc PA |
2609 | int val; |
2610 | ||
dd61ec5c | 2611 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2612 | if (val) |
2613 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2614 | } |
492d29ea | 2615 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2616 | { |
0000e5cc PA |
2617 | bp_err = e.error; |
2618 | bp_err_message = e.message; | |
dd61ec5c | 2619 | } |
492d29ea | 2620 | END_CATCH |
879bfdc2 DJ |
2621 | } |
2622 | else | |
2623 | { | |
4a64f543 | 2624 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2625 | Shall we set a breakpoint at the LMA? */ |
2626 | if (!overlay_events_enabled) | |
2627 | { | |
2628 | /* Yes -- overlay event support is not active, | |
2629 | so we must try to set a breakpoint at the LMA. | |
2630 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2631 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2632 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2633 | bl->owner->number); |
879bfdc2 DJ |
2634 | else |
2635 | { | |
35df4500 TJB |
2636 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2637 | bl->section); | |
879bfdc2 | 2638 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2639 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2640 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2641 | |
2642 | /* No overlay handling: just set the breakpoint. */ | |
492d29ea | 2643 | TRY |
0000e5cc PA |
2644 | { |
2645 | int val; | |
2646 | ||
579c6ad9 | 2647 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2648 | = breakpoint_kind (bl, &addr); |
2649 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2650 | val = target_insert_breakpoint (bl->gdbarch, |
2651 | &bl->overlay_target_info); | |
2652 | if (val) | |
2653 | bp_err = GENERIC_ERROR; | |
2654 | } | |
492d29ea | 2655 | CATCH (e, RETURN_MASK_ALL) |
0000e5cc PA |
2656 | { |
2657 | bp_err = e.error; | |
2658 | bp_err_message = e.message; | |
2659 | } | |
492d29ea | 2660 | END_CATCH |
0000e5cc PA |
2661 | |
2662 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2663 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2664 | "Overlay breakpoint %d " |
2665 | "failed: in ROM?\n", | |
35df4500 | 2666 | bl->owner->number); |
879bfdc2 DJ |
2667 | } |
2668 | } | |
2669 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2670 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2671 | { |
2672 | /* Yes. This overlay section is mapped into memory. */ | |
492d29ea | 2673 | TRY |
dd61ec5c | 2674 | { |
0000e5cc PA |
2675 | int val; |
2676 | ||
dd61ec5c | 2677 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2678 | if (val) |
2679 | bp_err = GENERIC_ERROR; | |
dd61ec5c | 2680 | } |
492d29ea | 2681 | CATCH (e, RETURN_MASK_ALL) |
dd61ec5c | 2682 | { |
0000e5cc PA |
2683 | bp_err = e.error; |
2684 | bp_err_message = e.message; | |
dd61ec5c | 2685 | } |
492d29ea | 2686 | END_CATCH |
879bfdc2 DJ |
2687 | } |
2688 | else | |
2689 | { | |
2690 | /* No. This breakpoint will not be inserted. | |
2691 | No error, but do not mark the bp as 'inserted'. */ | |
2692 | return 0; | |
2693 | } | |
2694 | } | |
2695 | ||
0000e5cc | 2696 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2697 | { |
2698 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2699 | |
2700 | /* In some cases, we might not be able to insert a | |
2701 | breakpoint in a shared library that has already been | |
2702 | removed, but we have not yet processed the shlib unload | |
2703 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2704 | breakpoint insertion themselves can't tell why the |
2705 | breakpoint insertion failed (e.g., the remote target | |
2706 | doesn't define error codes), so we must treat generic | |
2707 | errors as memory errors. */ | |
0000e5cc | 2708 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2709 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2710 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2711 | || shared_objfile_contains_address_p (bl->pspace, |
2712 | bl->address))) | |
879bfdc2 | 2713 | { |
4a64f543 | 2714 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2715 | bl->shlib_disabled = 1; |
8d3788bd | 2716 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2717 | if (!*disabled_breaks) |
2718 | { | |
2719 | fprintf_unfiltered (tmp_error_stream, | |
2720 | "Cannot insert breakpoint %d.\n", | |
2721 | bl->owner->number); | |
2722 | fprintf_unfiltered (tmp_error_stream, | |
2723 | "Temporarily disabling shared " | |
2724 | "library breakpoints:\n"); | |
2725 | } | |
2726 | *disabled_breaks = 1; | |
879bfdc2 | 2727 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2728 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2729 | return 0; |
879bfdc2 DJ |
2730 | } |
2731 | else | |
879bfdc2 | 2732 | { |
35df4500 | 2733 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2734 | { |
0000e5cc PA |
2735 | *hw_breakpoint_error = 1; |
2736 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2737 | fprintf_unfiltered (tmp_error_stream, |
2738 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2739 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2740 | if (bp_err_message != NULL) | |
2741 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2742 | } |
2743 | else | |
2744 | { | |
0000e5cc PA |
2745 | if (bp_err_message == NULL) |
2746 | { | |
1ccbe998 | 2747 | std::string message |
0000e5cc PA |
2748 | = memory_error_message (TARGET_XFER_E_IO, |
2749 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2750 | |
2751 | fprintf_unfiltered (tmp_error_stream, | |
2752 | "Cannot insert breakpoint %d.\n" | |
2753 | "%s\n", | |
1ccbe998 | 2754 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2755 | } |
2756 | else | |
2757 | { | |
2758 | fprintf_unfiltered (tmp_error_stream, | |
2759 | "Cannot insert breakpoint %d: %s\n", | |
2760 | bl->owner->number, | |
2761 | bp_err_message); | |
2762 | } | |
879bfdc2 | 2763 | } |
0000e5cc | 2764 | return 1; |
879bfdc2 DJ |
2765 | |
2766 | } | |
2767 | } | |
2768 | else | |
35df4500 | 2769 | bl->inserted = 1; |
879bfdc2 | 2770 | |
0000e5cc | 2771 | return 0; |
879bfdc2 DJ |
2772 | } |
2773 | ||
35df4500 | 2774 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2775 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2776 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2777 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2778 | { |
0000e5cc PA |
2779 | int val; |
2780 | ||
77b06cd7 TJB |
2781 | gdb_assert (bl->owner->ops != NULL |
2782 | && bl->owner->ops->insert_location != NULL); | |
2783 | ||
2784 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2785 | |
2786 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2787 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2788 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2789 | { |
2790 | struct bp_location *loc, **loc_temp; | |
2791 | ||
2792 | /* But don't try to insert it, if there's already another | |
2793 | hw_access location that would be considered a duplicate | |
2794 | of this one. */ | |
2795 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2796 | if (loc != bl |
85d721b8 | 2797 | && loc->watchpoint_type == hw_access |
35df4500 | 2798 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2799 | { |
35df4500 TJB |
2800 | bl->duplicate = 1; |
2801 | bl->inserted = 1; | |
2802 | bl->target_info = loc->target_info; | |
2803 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2804 | val = 0; |
2805 | break; | |
2806 | } | |
2807 | ||
2808 | if (val == 1) | |
2809 | { | |
77b06cd7 TJB |
2810 | bl->watchpoint_type = hw_access; |
2811 | val = bl->owner->ops->insert_location (bl); | |
2812 | ||
2813 | if (val) | |
2814 | /* Back to the original value. */ | |
2815 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2816 | } |
2817 | } | |
2818 | ||
35df4500 | 2819 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2820 | } |
2821 | ||
35df4500 | 2822 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2823 | { |
0000e5cc PA |
2824 | int val; |
2825 | ||
77b06cd7 TJB |
2826 | gdb_assert (bl->owner->ops != NULL |
2827 | && bl->owner->ops->insert_location != NULL); | |
2828 | ||
2829 | val = bl->owner->ops->insert_location (bl); | |
2830 | if (val) | |
2831 | { | |
2832 | bl->owner->enable_state = bp_disabled; | |
2833 | ||
2834 | if (val == 1) | |
2835 | warning (_("\ | |
2836 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2837 | of catchpoint."), bl->owner->number); | |
2838 | else | |
2839 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2840 | } | |
2841 | ||
2842 | bl->inserted = (val == 0); | |
1640b821 DJ |
2843 | |
2844 | /* We've already printed an error message if there was a problem | |
2845 | inserting this catchpoint, and we've disabled the catchpoint, | |
2846 | so just return success. */ | |
2847 | return 0; | |
879bfdc2 DJ |
2848 | } |
2849 | ||
2850 | return 0; | |
2851 | } | |
2852 | ||
6c95b8df PA |
2853 | /* This function is called when program space PSPACE is about to be |
2854 | deleted. It takes care of updating breakpoints to not reference | |
2855 | PSPACE anymore. */ | |
2856 | ||
2857 | void | |
2858 | breakpoint_program_space_exit (struct program_space *pspace) | |
2859 | { | |
2860 | struct breakpoint *b, *b_temp; | |
876fa593 | 2861 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2862 | |
2863 | /* Remove any breakpoint that was set through this program space. */ | |
2864 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2865 | { | |
2866 | if (b->pspace == pspace) | |
2867 | delete_breakpoint (b); | |
2868 | } | |
2869 | ||
2870 | /* Breakpoints set through other program spaces could have locations | |
2871 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2872 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2873 | { |
2874 | struct bp_location *tmp; | |
2875 | ||
2876 | if (loc->pspace == pspace) | |
2877 | { | |
2bdf28a0 | 2878 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2879 | if (loc->owner->loc == loc) |
2880 | loc->owner->loc = loc->next; | |
2881 | else | |
2882 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2883 | if (tmp->next == loc) | |
2884 | { | |
2885 | tmp->next = loc->next; | |
2886 | break; | |
2887 | } | |
2888 | } | |
2889 | } | |
2890 | ||
2891 | /* Now update the global location list to permanently delete the | |
2892 | removed locations above. */ | |
44702360 | 2893 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2894 | } |
2895 | ||
74960c60 VP |
2896 | /* Make sure all breakpoints are inserted in inferior. |
2897 | Throws exception on any error. | |
2898 | A breakpoint that is already inserted won't be inserted | |
2899 | again, so calling this function twice is safe. */ | |
2900 | void | |
2901 | insert_breakpoints (void) | |
2902 | { | |
2903 | struct breakpoint *bpt; | |
2904 | ||
2905 | ALL_BREAKPOINTS (bpt) | |
2906 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2907 | { |
2908 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2909 | ||
2910 | update_watchpoint (w, 0 /* don't reparse. */); | |
2911 | } | |
74960c60 | 2912 | |
04086b45 PA |
2913 | /* Updating watchpoints creates new locations, so update the global |
2914 | location list. Explicitly tell ugll to insert locations and | |
2915 | ignore breakpoints_always_inserted_mode. */ | |
2916 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2917 | } |
2918 | ||
20388dd6 YQ |
2919 | /* Invoke CALLBACK for each of bp_location. */ |
2920 | ||
2921 | void | |
2922 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2923 | { | |
2924 | struct bp_location *loc, **loc_tmp; | |
2925 | ||
2926 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2927 | { | |
2928 | callback (loc, NULL); | |
2929 | } | |
2930 | } | |
2931 | ||
b775012e LM |
2932 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2933 | target. It is the case with deleting and disabling of breakpoints when using | |
2934 | always-inserted mode. */ | |
2935 | ||
2936 | static void | |
2937 | update_inserted_breakpoint_locations (void) | |
2938 | { | |
2939 | struct bp_location *bl, **blp_tmp; | |
2940 | int error_flag = 0; | |
2941 | int val = 0; | |
2942 | int disabled_breaks = 0; | |
2943 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2944 | int hw_bp_details_reported = 0; |
b775012e | 2945 | |
d7e74731 | 2946 | string_file tmp_error_stream; |
b775012e LM |
2947 | |
2948 | /* Explicitly mark the warning -- this will only be printed if | |
2949 | there was an error. */ | |
d7e74731 | 2950 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2951 | |
5ed8105e | 2952 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2953 | |
2954 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2955 | { | |
2956 | /* We only want to update software breakpoints and hardware | |
2957 | breakpoints. */ | |
2958 | if (!is_breakpoint (bl->owner)) | |
2959 | continue; | |
2960 | ||
2961 | /* We only want to update locations that are already inserted | |
2962 | and need updating. This is to avoid unwanted insertion during | |
2963 | deletion of breakpoints. */ | |
2964 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2965 | continue; | |
2966 | ||
2967 | switch_to_program_space_and_thread (bl->pspace); | |
2968 | ||
2969 | /* For targets that support global breakpoints, there's no need | |
2970 | to select an inferior to insert breakpoint to. In fact, even | |
2971 | if we aren't attached to any process yet, we should still | |
2972 | insert breakpoints. */ | |
f5656ead | 2973 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2974 | && ptid_equal (inferior_ptid, null_ptid)) |
2975 | continue; | |
2976 | ||
d7e74731 | 2977 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2978 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2979 | if (val) |
2980 | error_flag = val; | |
2981 | } | |
2982 | ||
2983 | if (error_flag) | |
2984 | { | |
223ffa71 | 2985 | target_terminal::ours_for_output (); |
b775012e LM |
2986 | error_stream (tmp_error_stream); |
2987 | } | |
b775012e LM |
2988 | } |
2989 | ||
c30eee59 | 2990 | /* Used when starting or continuing the program. */ |
c906108c | 2991 | |
74960c60 VP |
2992 | static void |
2993 | insert_breakpoint_locations (void) | |
c906108c | 2994 | { |
a5606eee | 2995 | struct breakpoint *bpt; |
35df4500 | 2996 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2997 | int error_flag = 0; |
c906108c | 2998 | int val = 0; |
3fbb6ffa | 2999 | int disabled_breaks = 0; |
81d0cc19 | 3000 | int hw_breakpoint_error = 0; |
dd61ec5c | 3001 | int hw_bp_error_explained_already = 0; |
c906108c | 3002 | |
d7e74731 PA |
3003 | string_file tmp_error_stream; |
3004 | ||
81d0cc19 GS |
3005 | /* Explicitly mark the warning -- this will only be printed if |
3006 | there was an error. */ | |
d7e74731 | 3007 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3008 | |
5ed8105e | 3009 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3010 | |
35df4500 | 3011 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3012 | { |
b775012e | 3013 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3014 | continue; |
3015 | ||
4a64f543 MS |
3016 | /* There is no point inserting thread-specific breakpoints if |
3017 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3018 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3019 | if (bl->owner->thread != -1 |
5d5658a1 | 3020 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3021 | continue; |
3022 | ||
35df4500 | 3023 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3024 | |
3025 | /* For targets that support global breakpoints, there's no need | |
3026 | to select an inferior to insert breakpoint to. In fact, even | |
3027 | if we aren't attached to any process yet, we should still | |
3028 | insert breakpoints. */ | |
f5656ead | 3029 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
3030 | && ptid_equal (inferior_ptid, null_ptid)) |
3031 | continue; | |
3032 | ||
d7e74731 | 3033 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3034 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3035 | if (val) |
eacd795a | 3036 | error_flag = val; |
879bfdc2 | 3037 | } |
c906108c | 3038 | |
4a64f543 MS |
3039 | /* If we failed to insert all locations of a watchpoint, remove |
3040 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3041 | ALL_BREAKPOINTS (bpt) |
3042 | { | |
3043 | int some_failed = 0; | |
3044 | struct bp_location *loc; | |
3045 | ||
3046 | if (!is_hardware_watchpoint (bpt)) | |
3047 | continue; | |
3048 | ||
d6b74ac4 | 3049 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3050 | continue; |
74960c60 VP |
3051 | |
3052 | if (bpt->disposition == disp_del_at_next_stop) | |
3053 | continue; | |
a5606eee VP |
3054 | |
3055 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3056 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3057 | { |
3058 | some_failed = 1; | |
3059 | break; | |
3060 | } | |
3061 | if (some_failed) | |
3062 | { | |
3063 | for (loc = bpt->loc; loc; loc = loc->next) | |
3064 | if (loc->inserted) | |
834c0d03 | 3065 | remove_breakpoint (loc); |
a5606eee VP |
3066 | |
3067 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3068 | tmp_error_stream.printf ("Could not insert " |
3069 | "hardware watchpoint %d.\n", | |
3070 | bpt->number); | |
eacd795a | 3071 | error_flag = -1; |
a5606eee VP |
3072 | } |
3073 | } | |
3074 | ||
eacd795a | 3075 | if (error_flag) |
81d0cc19 GS |
3076 | { |
3077 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3078 | message about possibly exhausted resources. */ | |
dd61ec5c | 3079 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3080 | { |
d7e74731 | 3081 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3082 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3083 | } |
223ffa71 | 3084 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3085 | error_stream (tmp_error_stream); |
3086 | } | |
c906108c SS |
3087 | } |
3088 | ||
c30eee59 TJB |
3089 | /* Used when the program stops. |
3090 | Returns zero if successful, or non-zero if there was a problem | |
3091 | removing a breakpoint location. */ | |
3092 | ||
c906108c | 3093 | int |
fba45db2 | 3094 | remove_breakpoints (void) |
c906108c | 3095 | { |
35df4500 | 3096 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3097 | int val = 0; |
c906108c | 3098 | |
35df4500 | 3099 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3100 | { |
1e4d1764 | 3101 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3102 | val |= remove_breakpoint (bl); |
c5aa993b | 3103 | } |
3a1bae8e | 3104 | return val; |
c906108c SS |
3105 | } |
3106 | ||
49fa26b0 PA |
3107 | /* When a thread exits, remove breakpoints that are related to |
3108 | that thread. */ | |
3109 | ||
3110 | static void | |
3111 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3112 | { | |
3113 | struct breakpoint *b, *b_tmp; | |
3114 | ||
3115 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3116 | { | |
5d5658a1 | 3117 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3118 | { |
3119 | b->disposition = disp_del_at_next_stop; | |
3120 | ||
3121 | printf_filtered (_("\ | |
43792cf0 PA |
3122 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3123 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3124 | |
3125 | /* Hide it from the user. */ | |
3126 | b->number = 0; | |
3127 | } | |
3128 | } | |
3129 | } | |
3130 | ||
6c95b8df PA |
3131 | /* Remove breakpoints of process PID. */ |
3132 | ||
3133 | int | |
3134 | remove_breakpoints_pid (int pid) | |
3135 | { | |
35df4500 | 3136 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3137 | int val; |
3138 | struct inferior *inf = find_inferior_pid (pid); | |
3139 | ||
35df4500 | 3140 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3141 | { |
35df4500 | 3142 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3143 | continue; |
3144 | ||
fc126975 | 3145 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3146 | { |
834c0d03 | 3147 | val = remove_breakpoint (bl); |
6c95b8df PA |
3148 | if (val != 0) |
3149 | return val; | |
3150 | } | |
3151 | } | |
3152 | return 0; | |
3153 | } | |
3154 | ||
e58b0e63 PA |
3155 | static int internal_breakpoint_number = -1; |
3156 | ||
84f4c1fe PM |
3157 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3158 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3159 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3160 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3161 | breakpoint_count and that value incremented. Internal breakpoints |
3162 | do not set the internal var bpnum. */ | |
3163 | static void | |
3164 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3165 | { | |
3166 | if (internal) | |
3167 | b->number = internal_breakpoint_number--; | |
3168 | else | |
3169 | { | |
3170 | set_breakpoint_count (breakpoint_count + 1); | |
3171 | b->number = breakpoint_count; | |
3172 | } | |
3173 | } | |
3174 | ||
e62c965a | 3175 | static struct breakpoint * |
a6d9a66e | 3176 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3177 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3178 | const struct breakpoint_ops *ops) |
e62c965a | 3179 | { |
51abb421 | 3180 | symtab_and_line sal; |
e62c965a PP |
3181 | sal.pc = address; |
3182 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3183 | sal.pspace = current_program_space; |
e62c965a | 3184 | |
51abb421 | 3185 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3186 | b->number = internal_breakpoint_number--; |
3187 | b->disposition = disp_donttouch; | |
3188 | ||
3189 | return b; | |
3190 | } | |
3191 | ||
17450429 PP |
3192 | static const char *const longjmp_names[] = |
3193 | { | |
3194 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3195 | }; | |
3196 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3197 | ||
3198 | /* Per-objfile data private to breakpoint.c. */ | |
3199 | struct breakpoint_objfile_data | |
3200 | { | |
3201 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3b7344d5 | 3202 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3203 | |
3204 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3b7344d5 | 3205 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3206 | |
28106bc2 SDJ |
3207 | /* True if we have looked for longjmp probes. */ |
3208 | int longjmp_searched; | |
3209 | ||
3210 | /* SystemTap probe points for longjmp (if any). */ | |
3211 | VEC (probe_p) *longjmp_probes; | |
3212 | ||
17450429 | 3213 | /* Minimal symbol for "std::terminate()" (if any). */ |
3b7344d5 | 3214 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3215 | |
3216 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3b7344d5 | 3217 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3218 | |
3219 | /* True if we have looked for exception probes. */ | |
3220 | int exception_searched; | |
3221 | ||
3222 | /* SystemTap probe points for unwinding (if any). */ | |
3223 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3224 | }; |
3225 | ||
3226 | static const struct objfile_data *breakpoint_objfile_key; | |
3227 | ||
3228 | /* Minimal symbol not found sentinel. */ | |
3229 | static struct minimal_symbol msym_not_found; | |
3230 | ||
3231 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3232 | ||
3233 | static int | |
3234 | msym_not_found_p (const struct minimal_symbol *msym) | |
3235 | { | |
3236 | return msym == &msym_not_found; | |
3237 | } | |
3238 | ||
3239 | /* Return per-objfile data needed by breakpoint.c. | |
3240 | Allocate the data if necessary. */ | |
3241 | ||
3242 | static struct breakpoint_objfile_data * | |
3243 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3244 | { | |
3245 | struct breakpoint_objfile_data *bp_objfile_data; | |
3246 | ||
9a3c8263 SM |
3247 | bp_objfile_data = ((struct breakpoint_objfile_data *) |
3248 | objfile_data (objfile, breakpoint_objfile_key)); | |
17450429 PP |
3249 | if (bp_objfile_data == NULL) |
3250 | { | |
8d749320 SM |
3251 | bp_objfile_data = |
3252 | XOBNEW (&objfile->objfile_obstack, struct breakpoint_objfile_data); | |
17450429 PP |
3253 | |
3254 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3255 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3256 | } | |
3257 | return bp_objfile_data; | |
3258 | } | |
3259 | ||
28106bc2 SDJ |
3260 | static void |
3261 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3262 | { | |
9a3c8263 SM |
3263 | struct breakpoint_objfile_data *bp_objfile_data |
3264 | = (struct breakpoint_objfile_data *) data; | |
28106bc2 SDJ |
3265 | |
3266 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3267 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3268 | } | |
3269 | ||
e62c965a | 3270 | static void |
af02033e | 3271 | create_overlay_event_breakpoint (void) |
e62c965a | 3272 | { |
69de3c6a | 3273 | struct objfile *objfile; |
af02033e | 3274 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3275 | |
69de3c6a PP |
3276 | ALL_OBJFILES (objfile) |
3277 | { | |
3278 | struct breakpoint *b; | |
17450429 PP |
3279 | struct breakpoint_objfile_data *bp_objfile_data; |
3280 | CORE_ADDR addr; | |
67994074 | 3281 | struct explicit_location explicit_loc; |
69de3c6a | 3282 | |
17450429 PP |
3283 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3284 | ||
3b7344d5 | 3285 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3286 | continue; |
3287 | ||
3b7344d5 | 3288 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3289 | { |
3b7344d5 | 3290 | struct bound_minimal_symbol m; |
17450429 PP |
3291 | |
3292 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3293 | if (m.minsym == NULL) |
17450429 PP |
3294 | { |
3295 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3296 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3297 | continue; |
3298 | } | |
3299 | bp_objfile_data->overlay_msym = m; | |
3300 | } | |
e62c965a | 3301 | |
77e371c0 | 3302 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3303 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3304 | bp_overlay_event, |
3305 | &internal_breakpoint_ops); | |
67994074 KS |
3306 | initialize_explicit_location (&explicit_loc); |
3307 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3308 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3309 | |
69de3c6a PP |
3310 | if (overlay_debugging == ovly_auto) |
3311 | { | |
3312 | b->enable_state = bp_enabled; | |
3313 | overlay_events_enabled = 1; | |
3314 | } | |
3315 | else | |
3316 | { | |
3317 | b->enable_state = bp_disabled; | |
3318 | overlay_events_enabled = 0; | |
3319 | } | |
e62c965a | 3320 | } |
e62c965a PP |
3321 | } |
3322 | ||
0fd8e87f | 3323 | static void |
af02033e | 3324 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3325 | { |
6c95b8df | 3326 | struct program_space *pspace; |
6c95b8df | 3327 | |
5ed8105e | 3328 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3329 | |
6c95b8df | 3330 | ALL_PSPACES (pspace) |
af02033e PP |
3331 | { |
3332 | struct objfile *objfile; | |
3333 | ||
3334 | set_current_program_space (pspace); | |
3335 | ||
3336 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3337 | { |
af02033e PP |
3338 | int i; |
3339 | struct gdbarch *gdbarch; | |
17450429 | 3340 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3341 | |
af02033e | 3342 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3343 | |
17450429 PP |
3344 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3345 | ||
28106bc2 SDJ |
3346 | if (!bp_objfile_data->longjmp_searched) |
3347 | { | |
25f9533e SDJ |
3348 | VEC (probe_p) *ret; |
3349 | ||
3350 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3351 | if (ret != NULL) | |
3352 | { | |
3353 | /* We are only interested in checking one element. */ | |
3354 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3355 | ||
3356 | if (!can_evaluate_probe_arguments (p)) | |
3357 | { | |
3358 | /* We cannot use the probe interface here, because it does | |
3359 | not know how to evaluate arguments. */ | |
3360 | VEC_free (probe_p, ret); | |
3361 | ret = NULL; | |
3362 | } | |
3363 | } | |
3364 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3365 | bp_objfile_data->longjmp_searched = 1; |
3366 | } | |
3367 | ||
3368 | if (bp_objfile_data->longjmp_probes != NULL) | |
3369 | { | |
3370 | int i; | |
3371 | struct probe *probe; | |
3372 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3373 | ||
3374 | for (i = 0; | |
3375 | VEC_iterate (probe_p, | |
3376 | bp_objfile_data->longjmp_probes, | |
3377 | i, probe); | |
3378 | ++i) | |
3379 | { | |
3380 | struct breakpoint *b; | |
3381 | ||
729662a5 TT |
3382 | b = create_internal_breakpoint (gdbarch, |
3383 | get_probe_address (probe, | |
3384 | objfile), | |
28106bc2 SDJ |
3385 | bp_longjmp_master, |
3386 | &internal_breakpoint_ops); | |
d28cd78a | 3387 | b->location = new_probe_location ("-probe-stap libc:longjmp"); |
28106bc2 SDJ |
3388 | b->enable_state = bp_disabled; |
3389 | } | |
3390 | ||
3391 | continue; | |
3392 | } | |
3393 | ||
0569175e TSD |
3394 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3395 | continue; | |
3396 | ||
17450429 | 3397 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3398 | { |
3399 | struct breakpoint *b; | |
af02033e | 3400 | const char *func_name; |
17450429 | 3401 | CORE_ADDR addr; |
67994074 | 3402 | struct explicit_location explicit_loc; |
6c95b8df | 3403 | |
3b7344d5 | 3404 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3405 | continue; |
0fd8e87f | 3406 | |
17450429 | 3407 | func_name = longjmp_names[i]; |
3b7344d5 | 3408 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3409 | { |
3b7344d5 | 3410 | struct bound_minimal_symbol m; |
17450429 PP |
3411 | |
3412 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3413 | if (m.minsym == NULL) |
17450429 PP |
3414 | { |
3415 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3416 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3417 | continue; |
3418 | } | |
3419 | bp_objfile_data->longjmp_msym[i] = m; | |
3420 | } | |
3421 | ||
77e371c0 | 3422 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3423 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3424 | &internal_breakpoint_ops); | |
67994074 KS |
3425 | initialize_explicit_location (&explicit_loc); |
3426 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3427 | b->location = new_explicit_location (&explicit_loc); |
af02033e PP |
3428 | b->enable_state = bp_disabled; |
3429 | } | |
0fd8e87f | 3430 | } |
af02033e | 3431 | } |
0fd8e87f UW |
3432 | } |
3433 | ||
af02033e | 3434 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3435 | static void |
af02033e | 3436 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3437 | { |
3438 | struct program_space *pspace; | |
af02033e | 3439 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3440 | |
5ed8105e | 3441 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3442 | |
3443 | ALL_PSPACES (pspace) | |
17450429 PP |
3444 | { |
3445 | struct objfile *objfile; | |
3446 | CORE_ADDR addr; | |
3447 | ||
3448 | set_current_program_space (pspace); | |
3449 | ||
aa7d318d TT |
3450 | ALL_OBJFILES (objfile) |
3451 | { | |
3452 | struct breakpoint *b; | |
17450429 | 3453 | struct breakpoint_objfile_data *bp_objfile_data; |
67994074 | 3454 | struct explicit_location explicit_loc; |
aa7d318d | 3455 | |
17450429 | 3456 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3457 | |
3b7344d5 | 3458 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3459 | continue; |
3460 | ||
3b7344d5 | 3461 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3462 | { |
3b7344d5 | 3463 | struct bound_minimal_symbol m; |
17450429 PP |
3464 | |
3465 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3466 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3467 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3468 | { |
3469 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3470 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3471 | continue; |
3472 | } | |
3473 | bp_objfile_data->terminate_msym = m; | |
3474 | } | |
aa7d318d | 3475 | |
77e371c0 | 3476 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3477 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3478 | bp_std_terminate_master, |
3479 | &internal_breakpoint_ops); | |
67994074 KS |
3480 | initialize_explicit_location (&explicit_loc); |
3481 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3482 | b->location = new_explicit_location (&explicit_loc); |
aa7d318d TT |
3483 | b->enable_state = bp_disabled; |
3484 | } | |
17450429 | 3485 | } |
aa7d318d TT |
3486 | } |
3487 | ||
186c406b TT |
3488 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3489 | ||
70221824 | 3490 | static void |
186c406b TT |
3491 | create_exception_master_breakpoint (void) |
3492 | { | |
3493 | struct objfile *objfile; | |
17450429 | 3494 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3495 | |
3496 | ALL_OBJFILES (objfile) | |
3497 | { | |
17450429 PP |
3498 | struct breakpoint *b; |
3499 | struct gdbarch *gdbarch; | |
3500 | struct breakpoint_objfile_data *bp_objfile_data; | |
3501 | CORE_ADDR addr; | |
67994074 | 3502 | struct explicit_location explicit_loc; |
17450429 PP |
3503 | |
3504 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3505 | ||
28106bc2 SDJ |
3506 | /* We prefer the SystemTap probe point if it exists. */ |
3507 | if (!bp_objfile_data->exception_searched) | |
3508 | { | |
25f9533e SDJ |
3509 | VEC (probe_p) *ret; |
3510 | ||
3511 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3512 | ||
3513 | if (ret != NULL) | |
3514 | { | |
3515 | /* We are only interested in checking one element. */ | |
3516 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3517 | ||
3518 | if (!can_evaluate_probe_arguments (p)) | |
3519 | { | |
3520 | /* We cannot use the probe interface here, because it does | |
3521 | not know how to evaluate arguments. */ | |
3522 | VEC_free (probe_p, ret); | |
3523 | ret = NULL; | |
3524 | } | |
3525 | } | |
3526 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3527 | bp_objfile_data->exception_searched = 1; |
3528 | } | |
3529 | ||
3530 | if (bp_objfile_data->exception_probes != NULL) | |
3531 | { | |
3532 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3533 | int i; | |
3534 | struct probe *probe; | |
3535 | ||
3536 | for (i = 0; | |
3537 | VEC_iterate (probe_p, | |
3538 | bp_objfile_data->exception_probes, | |
3539 | i, probe); | |
3540 | ++i) | |
3541 | { | |
3542 | struct breakpoint *b; | |
3543 | ||
729662a5 TT |
3544 | b = create_internal_breakpoint (gdbarch, |
3545 | get_probe_address (probe, | |
3546 | objfile), | |
28106bc2 SDJ |
3547 | bp_exception_master, |
3548 | &internal_breakpoint_ops); | |
d28cd78a | 3549 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3550 | b->enable_state = bp_disabled; |
3551 | } | |
3552 | ||
3553 | continue; | |
3554 | } | |
3555 | ||
3556 | /* Otherwise, try the hook function. */ | |
3557 | ||
3b7344d5 | 3558 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3559 | continue; |
3560 | ||
3561 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3562 | |
3b7344d5 | 3563 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3564 | { |
3b7344d5 | 3565 | struct bound_minimal_symbol debug_hook; |
186c406b | 3566 | |
17450429 | 3567 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3568 | if (debug_hook.minsym == NULL) |
17450429 | 3569 | { |
3b7344d5 | 3570 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3571 | continue; |
3572 | } | |
3573 | ||
3574 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3575 | } |
17450429 | 3576 | |
77e371c0 | 3577 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3578 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3579 | ¤t_target); | |
06edf0c0 PA |
3580 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3581 | &internal_breakpoint_ops); | |
67994074 KS |
3582 | initialize_explicit_location (&explicit_loc); |
3583 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3584 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3585 | b->enable_state = bp_disabled; |
186c406b | 3586 | } |
186c406b TT |
3587 | } |
3588 | ||
9ef9e6a6 KS |
3589 | /* Does B have a location spec? */ |
3590 | ||
3591 | static int | |
3592 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3593 | { | |
d28cd78a | 3594 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3595 | } |
3596 | ||
c906108c | 3597 | void |
fba45db2 | 3598 | update_breakpoints_after_exec (void) |
c906108c | 3599 | { |
35df4500 | 3600 | struct breakpoint *b, *b_tmp; |
876fa593 | 3601 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3602 | |
25b22b0a PA |
3603 | /* We're about to delete breakpoints from GDB's lists. If the |
3604 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3605 | writing the breakpoints' "shadow contents" back into memory. The | |
3606 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3607 | do that. Instead, the target is responsible from marking | |
3608 | breakpoints out as soon as it detects an exec. We don't do that | |
3609 | here instead, because there may be other attempts to delete | |
3610 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3611 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3612 | if (bploc->pspace == current_program_space) |
3613 | gdb_assert (!bploc->inserted); | |
c906108c | 3614 | |
35df4500 | 3615 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3616 | { |
6c95b8df PA |
3617 | if (b->pspace != current_program_space) |
3618 | continue; | |
3619 | ||
4a64f543 | 3620 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3621 | if (b->type == bp_shlib_event) |
3622 | { | |
3623 | delete_breakpoint (b); | |
3624 | continue; | |
3625 | } | |
c906108c | 3626 | |
4a64f543 | 3627 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3628 | if (b->type == bp_jit_event) |
3629 | { | |
3630 | delete_breakpoint (b); | |
3631 | continue; | |
3632 | } | |
3633 | ||
1900040c | 3634 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3635 | as must overlay event and longjmp master breakpoints. */ |
3636 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3637 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3638 | || b->type == bp_exception_master) | |
c4093a6a JM |
3639 | { |
3640 | delete_breakpoint (b); | |
3641 | continue; | |
3642 | } | |
3643 | ||
4a64f543 | 3644 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3645 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3646 | { |
3647 | delete_breakpoint (b); | |
3648 | continue; | |
3649 | } | |
3650 | ||
7c16b83e PA |
3651 | /* Just like single-step breakpoints. */ |
3652 | if (b->type == bp_single_step) | |
3653 | { | |
3654 | delete_breakpoint (b); | |
3655 | continue; | |
3656 | } | |
3657 | ||
611c83ae PA |
3658 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3659 | after an exec. */ | |
186c406b | 3660 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3661 | || b->type == bp_longjmp_call_dummy |
186c406b | 3662 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3663 | { |
3664 | delete_breakpoint (b); | |
3665 | continue; | |
3666 | } | |
3667 | ||
ce78b96d JB |
3668 | if (b->type == bp_catchpoint) |
3669 | { | |
3670 | /* For now, none of the bp_catchpoint breakpoints need to | |
3671 | do anything at this point. In the future, if some of | |
3672 | the catchpoints need to something, we will need to add | |
3673 | a new method, and call this method from here. */ | |
3674 | continue; | |
3675 | } | |
3676 | ||
c5aa993b JM |
3677 | /* bp_finish is a special case. The only way we ought to be able |
3678 | to see one of these when an exec() has happened, is if the user | |
3679 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3680 | carries them to the call-site of the current callee, by setting | |
3681 | a temporary bp there and resuming. But in this case, the finish | |
3682 | will carry them entirely through the vfork & exec. | |
3683 | ||
3684 | We don't want to allow a bp_finish to remain inserted now. But | |
3685 | we can't safely delete it, 'cause finish_command has a handle to | |
3686 | the bp on a bpstat, and will later want to delete it. There's a | |
3687 | chance (and I've seen it happen) that if we delete the bp_finish | |
3688 | here, that its storage will get reused by the time finish_command | |
3689 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3690 | We really must allow finish_command to delete a bp_finish. | |
3691 | ||
e5dd4106 | 3692 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3693 | it's safe to delete something others may have handles to?" |
3694 | problem, what we'll do here is just uninsert the bp_finish, and | |
3695 | let finish_command delete it. | |
3696 | ||
3697 | (We know the bp_finish is "doomed" in the sense that it's | |
3698 | momentary, and will be deleted as soon as finish_command sees | |
3699 | the inferior stopped. So it doesn't matter that the bp's | |
3700 | address is probably bogus in the new a.out, unlike e.g., the | |
3701 | solib breakpoints.) */ | |
c5aa993b | 3702 | |
c5aa993b JM |
3703 | if (b->type == bp_finish) |
3704 | { | |
3705 | continue; | |
3706 | } | |
3707 | ||
3708 | /* Without a symbolic address, we have little hope of the | |
3709 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3710 | a.out. */ |
9ef9e6a6 | 3711 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3712 | { |
3713 | delete_breakpoint (b); | |
3714 | continue; | |
3715 | } | |
c5aa993b | 3716 | } |
c906108c SS |
3717 | } |
3718 | ||
3719 | int | |
d80ee84f | 3720 | detach_breakpoints (ptid_t ptid) |
c906108c | 3721 | { |
35df4500 | 3722 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3723 | int val = 0; |
2989a365 | 3724 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3725 | struct inferior *inf = current_inferior (); |
c5aa993b | 3726 | |
dfd4cc63 | 3727 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3728 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3729 | |
6c95b8df | 3730 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3731 | inferior_ptid = ptid; |
35df4500 | 3732 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3733 | { |
35df4500 | 3734 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3735 | continue; |
3736 | ||
bd9673a4 PW |
3737 | /* This function must physically remove breakpoints locations |
3738 | from the specified ptid, without modifying the breakpoint | |
3739 | package's state. Locations of type bp_loc_other are only | |
3740 | maintained at GDB side. So, there is no need to remove | |
3741 | these bp_loc_other locations. Moreover, removing these | |
3742 | would modify the breakpoint package's state. */ | |
3743 | if (bl->loc_type == bp_loc_other) | |
3744 | continue; | |
3745 | ||
35df4500 | 3746 | if (bl->inserted) |
b2b6a7da | 3747 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3748 | } |
d03285ec | 3749 | |
3a1bae8e | 3750 | return val; |
c906108c SS |
3751 | } |
3752 | ||
35df4500 | 3753 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3754 | Note that this is used to detach breakpoints from a child fork. |
3755 | When we get here, the child isn't in the inferior list, and neither | |
3756 | do we have objects to represent its address space --- we should | |
35df4500 | 3757 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3758 | |
c906108c | 3759 | static int |
b2b6a7da | 3760 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3761 | { |
3762 | int val; | |
c5aa993b | 3763 | |
35df4500 TJB |
3764 | /* BL is never in moribund_locations by our callers. */ |
3765 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3766 | |
74960c60 VP |
3767 | /* The type of none suggests that owner is actually deleted. |
3768 | This should not ever happen. */ | |
35df4500 | 3769 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3770 | |
35df4500 TJB |
3771 | if (bl->loc_type == bp_loc_software_breakpoint |
3772 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3773 | { |
c02f5703 MS |
3774 | /* "Normal" instruction breakpoint: either the standard |
3775 | trap-instruction bp (bp_breakpoint), or a | |
3776 | bp_hardware_breakpoint. */ | |
3777 | ||
3778 | /* First check to see if we have to handle an overlay. */ | |
3779 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3780 | || bl->section == NULL |
3781 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3782 | { |
3783 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3784 | |
3785 | /* If we're trying to uninsert a memory breakpoint that we | |
3786 | know is set in a dynamic object that is marked | |
3787 | shlib_disabled, then either the dynamic object was | |
3788 | removed with "remove-symbol-file" or with | |
3789 | "nosharedlibrary". In the former case, we don't know | |
3790 | whether another dynamic object might have loaded over the | |
3791 | breakpoint's address -- the user might well let us know | |
3792 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3793 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3794 | list of dynamically loaded objects). If we have the |
3795 | breakpoint's shadow memory, that is, this is a software | |
3796 | breakpoint managed by GDB, check whether the breakpoint | |
3797 | is still inserted in memory, to avoid overwriting wrong | |
3798 | code with stale saved shadow contents. Note that HW | |
3799 | breakpoints don't have shadow memory, as they're | |
3800 | implemented using a mechanism that is not dependent on | |
3801 | being able to modify the target's memory, and as such | |
3802 | they should always be removed. */ | |
3803 | if (bl->shlib_disabled | |
3804 | && bl->target_info.shadow_len != 0 | |
3805 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3806 | val = 0; | |
3807 | else | |
73971819 | 3808 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3809 | } |
c906108c SS |
3810 | else |
3811 | { | |
4a64f543 | 3812 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3813 | Did we set a breakpoint at the LMA? */ |
3814 | if (!overlay_events_enabled) | |
3815 | { | |
3816 | /* Yes -- overlay event support is not active, so we | |
3817 | should have set a breakpoint at the LMA. Remove it. | |
3818 | */ | |
c02f5703 MS |
3819 | /* Ignore any failures: if the LMA is in ROM, we will |
3820 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3821 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3822 | target_remove_hw_breakpoint (bl->gdbarch, | |
3823 | &bl->overlay_target_info); | |
c02f5703 | 3824 | else |
35df4500 | 3825 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3826 | &bl->overlay_target_info, |
3827 | reason); | |
c02f5703 MS |
3828 | } |
3829 | /* Did we set a breakpoint at the VMA? | |
3830 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3831 | if (bl->inserted) |
c906108c | 3832 | { |
c02f5703 MS |
3833 | /* Yes -- remove it. Previously we did not bother to |
3834 | remove the breakpoint if the section had been | |
3835 | unmapped, but let's not rely on that being safe. We | |
3836 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3837 | |
3838 | /* However, we should remove *software* breakpoints only | |
3839 | if the section is still mapped, or else we overwrite | |
3840 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3841 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3842 | || section_is_mapped (bl->section)) | |
73971819 | 3843 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3844 | else |
3845 | val = 0; | |
c906108c | 3846 | } |
c02f5703 MS |
3847 | else |
3848 | { | |
3849 | /* No -- not inserted, so no need to remove. No error. */ | |
3850 | val = 0; | |
3851 | } | |
c906108c | 3852 | } |
879d1e6b | 3853 | |
08351840 PA |
3854 | /* In some cases, we might not be able to remove a breakpoint in |
3855 | a shared library that has already been removed, but we have | |
3856 | not yet processed the shlib unload event. Similarly for an | |
3857 | unloaded add-symbol-file object - the user might not yet have | |
3858 | had the chance to remove-symbol-file it. shlib_disabled will | |
3859 | be set if the library/object has already been removed, but | |
3860 | the breakpoint hasn't been uninserted yet, e.g., after | |
3861 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3862 | always-inserted mode. */ | |
076855f9 | 3863 | if (val |
08351840 PA |
3864 | && (bl->loc_type == bp_loc_software_breakpoint |
3865 | && (bl->shlib_disabled | |
3866 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3867 | || shared_objfile_contains_address_p (bl->pspace, |
3868 | bl->address)))) | |
879d1e6b UW |
3869 | val = 0; |
3870 | ||
c906108c SS |
3871 | if (val) |
3872 | return val; | |
b2b6a7da | 3873 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3874 | } |
35df4500 | 3875 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3876 | { |
77b06cd7 TJB |
3877 | gdb_assert (bl->owner->ops != NULL |
3878 | && bl->owner->ops->remove_location != NULL); | |
3879 | ||
b2b6a7da | 3880 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3881 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3882 | |
c906108c | 3883 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3884 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3885 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3886 | bl->owner->number); |
c906108c | 3887 | } |
35df4500 TJB |
3888 | else if (bl->owner->type == bp_catchpoint |
3889 | && breakpoint_enabled (bl->owner) | |
3890 | && !bl->duplicate) | |
ce78b96d | 3891 | { |
77b06cd7 TJB |
3892 | gdb_assert (bl->owner->ops != NULL |
3893 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3894 | |
73971819 | 3895 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3896 | if (val) |
3897 | return val; | |
77b06cd7 | 3898 | |
b2b6a7da | 3899 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3900 | } |
c906108c SS |
3901 | |
3902 | return 0; | |
3903 | } | |
3904 | ||
6c95b8df | 3905 | static int |
834c0d03 | 3906 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3907 | { |
35df4500 TJB |
3908 | /* BL is never in moribund_locations by our callers. */ |
3909 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3910 | |
6c95b8df PA |
3911 | /* The type of none suggests that owner is actually deleted. |
3912 | This should not ever happen. */ | |
35df4500 | 3913 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3914 | |
5ed8105e | 3915 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3916 | |
35df4500 | 3917 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3918 | |
5ed8105e | 3919 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3920 | } |
3921 | ||
c906108c SS |
3922 | /* Clear the "inserted" flag in all breakpoints. */ |
3923 | ||
25b22b0a | 3924 | void |
fba45db2 | 3925 | mark_breakpoints_out (void) |
c906108c | 3926 | { |
35df4500 | 3927 | struct bp_location *bl, **blp_tmp; |
c906108c | 3928 | |
35df4500 | 3929 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3930 | if (bl->pspace == current_program_space) |
35df4500 | 3931 | bl->inserted = 0; |
c906108c SS |
3932 | } |
3933 | ||
53a5351d JM |
3934 | /* Clear the "inserted" flag in all breakpoints and delete any |
3935 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3936 | |
3937 | Plus other such housekeeping that has to be done for breakpoints | |
3938 | between runs. | |
3939 | ||
53a5351d JM |
3940 | Note: this function gets called at the end of a run (by |
3941 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3942 | init_wait_for_inferior). */ |
c906108c SS |
3943 | |
3944 | ||
3945 | ||
3946 | void | |
fba45db2 | 3947 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3948 | { |
35df4500 | 3949 | struct breakpoint *b, *b_tmp; |
870f88f7 | 3950 | struct bp_location *bl; |
1c5cfe86 | 3951 | int ix; |
6c95b8df | 3952 | struct program_space *pspace = current_program_space; |
c906108c | 3953 | |
50c71eaf PA |
3954 | /* If breakpoint locations are shared across processes, then there's |
3955 | nothing to do. */ | |
f5656ead | 3956 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3957 | return; |
3958 | ||
1a853c52 | 3959 | mark_breakpoints_out (); |
075f6582 | 3960 | |
35df4500 | 3961 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3962 | { |
6c95b8df PA |
3963 | if (b->loc && b->loc->pspace != pspace) |
3964 | continue; | |
3965 | ||
c5aa993b JM |
3966 | switch (b->type) |
3967 | { | |
3968 | case bp_call_dummy: | |
e2e4d78b | 3969 | case bp_longjmp_call_dummy: |
c906108c | 3970 | |
c5aa993b | 3971 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3972 | cause problems when the inferior is rerun, so we better get |
3973 | rid of it. */ | |
3974 | ||
3975 | case bp_watchpoint_scope: | |
3976 | ||
3977 | /* Also get rid of scope breakpoints. */ | |
3978 | ||
3979 | case bp_shlib_event: | |
3980 | ||
3981 | /* Also remove solib event breakpoints. Their addresses may | |
3982 | have changed since the last time we ran the program. | |
3983 | Actually we may now be debugging against different target; | |
3984 | and so the solib backend that installed this breakpoint may | |
3985 | not be used in by the target. E.g., | |
3986 | ||
3987 | (gdb) file prog-linux | |
3988 | (gdb) run # native linux target | |
3989 | ... | |
3990 | (gdb) kill | |
3991 | (gdb) file prog-win.exe | |
3992 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3993 | */ | |
c906108c | 3994 | |
f59f708a PA |
3995 | case bp_step_resume: |
3996 | ||
3997 | /* Also remove step-resume breakpoints. */ | |
3998 | ||
7c16b83e PA |
3999 | case bp_single_step: |
4000 | ||
4001 | /* Also remove single-step breakpoints. */ | |
4002 | ||
c5aa993b JM |
4003 | delete_breakpoint (b); |
4004 | break; | |
c906108c | 4005 | |
c5aa993b JM |
4006 | case bp_watchpoint: |
4007 | case bp_hardware_watchpoint: | |
4008 | case bp_read_watchpoint: | |
4009 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4010 | { |
4011 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4012 | |
3a5c3e22 PA |
4013 | /* Likewise for watchpoints on local expressions. */ |
4014 | if (w->exp_valid_block != NULL) | |
4015 | delete_breakpoint (b); | |
63000888 | 4016 | else |
3a5c3e22 | 4017 | { |
63000888 PA |
4018 | /* Get rid of existing locations, which are no longer |
4019 | valid. New ones will be created in | |
4020 | update_watchpoint, when the inferior is restarted. | |
4021 | The next update_global_location_list call will | |
4022 | garbage collect them. */ | |
4023 | b->loc = NULL; | |
4024 | ||
4025 | if (context == inf_starting) | |
4026 | { | |
4027 | /* Reset val field to force reread of starting value in | |
4028 | insert_breakpoints. */ | |
4029 | if (w->val) | |
4030 | value_free (w->val); | |
4031 | w->val = NULL; | |
4032 | w->val_valid = 0; | |
4033 | } | |
4034 | } | |
3a5c3e22 | 4035 | } |
c5aa993b JM |
4036 | break; |
4037 | default: | |
c5aa993b JM |
4038 | break; |
4039 | } | |
4040 | } | |
1c5cfe86 PA |
4041 | |
4042 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4043 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4044 | decref_bp_location (&bl); | |
1c5cfe86 | 4045 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4046 | } |
4047 | ||
6c95b8df PA |
4048 | /* These functions concern about actual breakpoints inserted in the |
4049 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4050 | we need to hop over the bkpt --- so we check for address space | |
4051 | match, not program space. */ | |
4052 | ||
c2c6d25f JM |
4053 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4054 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4055 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4056 | permanent breakpoint. | |
4057 | - When continuing from a location with an ordinary breakpoint, we | |
4058 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4059 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4060 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4061 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4062 | |
c2c6d25f | 4063 | enum breakpoint_here |
6c95b8df | 4064 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4065 | { |
35df4500 | 4066 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4067 | int any_breakpoint_here = 0; |
c906108c | 4068 | |
35df4500 | 4069 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4070 | { |
35df4500 TJB |
4071 | if (bl->loc_type != bp_loc_software_breakpoint |
4072 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4073 | continue; |
4074 | ||
f1310107 | 4075 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4076 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4077 | || bl->permanent) |
f1310107 | 4078 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4079 | { |
4080 | if (overlay_debugging | |
35df4500 TJB |
4081 | && section_is_overlay (bl->section) |
4082 | && !section_is_mapped (bl->section)) | |
075f6582 | 4083 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4084 | else if (bl->permanent) |
075f6582 DJ |
4085 | return permanent_breakpoint_here; |
4086 | else | |
4087 | any_breakpoint_here = 1; | |
4088 | } | |
4089 | } | |
c906108c | 4090 | |
f486487f | 4091 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4092 | } |
4093 | ||
d35ae833 PA |
4094 | /* See breakpoint.h. */ |
4095 | ||
4096 | int | |
4097 | breakpoint_in_range_p (struct address_space *aspace, | |
4098 | CORE_ADDR addr, ULONGEST len) | |
4099 | { | |
4100 | struct bp_location *bl, **blp_tmp; | |
4101 | ||
4102 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4103 | { | |
4104 | if (bl->loc_type != bp_loc_software_breakpoint | |
4105 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4106 | continue; | |
4107 | ||
4108 | if ((breakpoint_enabled (bl->owner) | |
4109 | || bl->permanent) | |
4110 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4111 | addr, len)) | |
4112 | { | |
4113 | if (overlay_debugging | |
4114 | && section_is_overlay (bl->section) | |
4115 | && !section_is_mapped (bl->section)) | |
4116 | { | |
4117 | /* Unmapped overlay -- can't be a match. */ | |
4118 | continue; | |
4119 | } | |
4120 | ||
4121 | return 1; | |
4122 | } | |
4123 | } | |
4124 | ||
4125 | return 0; | |
4126 | } | |
4127 | ||
1c5cfe86 PA |
4128 | /* Return true if there's a moribund breakpoint at PC. */ |
4129 | ||
4130 | int | |
6c95b8df | 4131 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4132 | { |
4133 | struct bp_location *loc; | |
4134 | int ix; | |
4135 | ||
4136 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4137 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4138 | return 1; |
4139 | ||
4140 | return 0; | |
4141 | } | |
c2c6d25f | 4142 | |
f7ce857f PA |
4143 | /* Returns non-zero iff BL is inserted at PC, in address space |
4144 | ASPACE. */ | |
4145 | ||
4146 | static int | |
4147 | bp_location_inserted_here_p (struct bp_location *bl, | |
4148 | struct address_space *aspace, CORE_ADDR pc) | |
4149 | { | |
4150 | if (bl->inserted | |
4151 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4152 | aspace, pc)) | |
4153 | { | |
4154 | if (overlay_debugging | |
4155 | && section_is_overlay (bl->section) | |
4156 | && !section_is_mapped (bl->section)) | |
4157 | return 0; /* unmapped overlay -- can't be a match */ | |
4158 | else | |
4159 | return 1; | |
4160 | } | |
4161 | return 0; | |
4162 | } | |
4163 | ||
a1fd2fa5 | 4164 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4165 | |
4166 | int | |
a1fd2fa5 | 4167 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4168 | { |
f7ce857f | 4169 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4170 | |
f7ce857f | 4171 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4172 | { |
f7ce857f PA |
4173 | struct bp_location *bl = *blp; |
4174 | ||
35df4500 TJB |
4175 | if (bl->loc_type != bp_loc_software_breakpoint |
4176 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4177 | continue; |
4178 | ||
f7ce857f PA |
4179 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4180 | return 1; | |
c5aa993b | 4181 | } |
c36b740a VP |
4182 | return 0; |
4183 | } | |
4184 | ||
a1fd2fa5 PA |
4185 | /* This function returns non-zero iff there is a software breakpoint |
4186 | inserted at PC. */ | |
c36b740a VP |
4187 | |
4188 | int | |
a1fd2fa5 PA |
4189 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
4190 | CORE_ADDR pc) | |
4fa8626c | 4191 | { |
f7ce857f | 4192 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4193 | |
f7ce857f | 4194 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4195 | { |
f7ce857f PA |
4196 | struct bp_location *bl = *blp; |
4197 | ||
35df4500 | 4198 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4199 | continue; |
4200 | ||
f7ce857f PA |
4201 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4202 | return 1; | |
4fa8626c DJ |
4203 | } |
4204 | ||
4205 | return 0; | |
9c02b525 PA |
4206 | } |
4207 | ||
4208 | /* See breakpoint.h. */ | |
4209 | ||
4210 | int | |
4211 | hardware_breakpoint_inserted_here_p (struct address_space *aspace, | |
4212 | CORE_ADDR pc) | |
4213 | { | |
4214 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4215 | |
4216 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4217 | { | |
4218 | struct bp_location *bl = *blp; | |
4219 | ||
4220 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4221 | continue; | |
4222 | ||
4223 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4224 | return 1; | |
4225 | } | |
4226 | ||
4227 | return 0; | |
4fa8626c DJ |
4228 | } |
4229 | ||
9093389c PA |
4230 | int |
4231 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4232 | CORE_ADDR addr, ULONGEST len) | |
4233 | { | |
4234 | struct breakpoint *bpt; | |
4235 | ||
4236 | ALL_BREAKPOINTS (bpt) | |
4237 | { | |
4238 | struct bp_location *loc; | |
4239 | ||
4240 | if (bpt->type != bp_hardware_watchpoint | |
4241 | && bpt->type != bp_access_watchpoint) | |
4242 | continue; | |
4243 | ||
4244 | if (!breakpoint_enabled (bpt)) | |
4245 | continue; | |
4246 | ||
4247 | for (loc = bpt->loc; loc; loc = loc->next) | |
4248 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4249 | { | |
4250 | CORE_ADDR l, h; | |
4251 | ||
4252 | /* Check for intersection. */ | |
768adc05 PA |
4253 | l = std::max<CORE_ADDR> (loc->address, addr); |
4254 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4255 | if (l < h) |
4256 | return 1; | |
4257 | } | |
4258 | } | |
4259 | return 0; | |
4260 | } | |
c906108c | 4261 | \f |
c5aa993b | 4262 | |
c906108c SS |
4263 | /* bpstat stuff. External routines' interfaces are documented |
4264 | in breakpoint.h. */ | |
4265 | ||
4266 | int | |
c326b90e | 4267 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4268 | { |
533be4dd | 4269 | return (ep->type == bp_catchpoint); |
c906108c SS |
4270 | } |
4271 | ||
f431efe5 PA |
4272 | /* Frees any storage that is part of a bpstat. Does not walk the |
4273 | 'next' chain. */ | |
4274 | ||
04afa70c | 4275 | bpstats::~bpstats () |
198757a8 | 4276 | { |
04afa70c TT |
4277 | if (old_val != NULL) |
4278 | value_free (old_val); | |
04afa70c TT |
4279 | if (bp_location_at != NULL) |
4280 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4281 | } |
4282 | ||
c906108c SS |
4283 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4284 | Also free any storage that is part of a bpstat. */ | |
4285 | ||
4286 | void | |
fba45db2 | 4287 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4288 | { |
4289 | bpstat p; | |
4290 | bpstat q; | |
4291 | ||
4292 | if (bsp == 0) | |
4293 | return; | |
4294 | p = *bsp; | |
4295 | while (p != NULL) | |
4296 | { | |
4297 | q = p->next; | |
04afa70c | 4298 | delete p; |
c906108c SS |
4299 | p = q; |
4300 | } | |
4301 | *bsp = NULL; | |
4302 | } | |
4303 | ||
04afa70c TT |
4304 | bpstats::bpstats (const bpstats &other) |
4305 | : next (NULL), | |
4306 | bp_location_at (other.bp_location_at), | |
4307 | breakpoint_at (other.breakpoint_at), | |
4308 | commands (other.commands), | |
4309 | old_val (other.old_val), | |
4310 | print (other.print), | |
4311 | stop (other.stop), | |
4312 | print_it (other.print_it) | |
4313 | { | |
4314 | if (old_val != NULL) | |
4315 | { | |
4316 | old_val = value_copy (old_val); | |
4317 | release_value (old_val); | |
4318 | } | |
4319 | incref_bp_location (bp_location_at); | |
04afa70c TT |
4320 | } |
4321 | ||
c906108c SS |
4322 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4323 | is part of the bpstat is copied as well. */ | |
4324 | ||
4325 | bpstat | |
fba45db2 | 4326 | bpstat_copy (bpstat bs) |
c906108c SS |
4327 | { |
4328 | bpstat p = NULL; | |
4329 | bpstat tmp; | |
4330 | bpstat retval = NULL; | |
4331 | ||
4332 | if (bs == NULL) | |
4333 | return bs; | |
4334 | ||
4335 | for (; bs != NULL; bs = bs->next) | |
4336 | { | |
04afa70c | 4337 | tmp = new bpstats (*bs); |
31cc81e9 | 4338 | |
c906108c SS |
4339 | if (p == NULL) |
4340 | /* This is the first thing in the chain. */ | |
4341 | retval = tmp; | |
4342 | else | |
4343 | p->next = tmp; | |
4344 | p = tmp; | |
4345 | } | |
4346 | p->next = NULL; | |
4347 | return retval; | |
4348 | } | |
4349 | ||
4a64f543 | 4350 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4351 | |
4352 | bpstat | |
fba45db2 | 4353 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4354 | { |
c5aa993b JM |
4355 | if (bsp == NULL) |
4356 | return NULL; | |
c906108c | 4357 | |
c5aa993b JM |
4358 | for (; bsp != NULL; bsp = bsp->next) |
4359 | { | |
f431efe5 | 4360 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4361 | return bsp; |
4362 | } | |
c906108c SS |
4363 | return NULL; |
4364 | } | |
4365 | ||
ab04a2af TT |
4366 | /* See breakpoint.h. */ |
4367 | ||
47591c29 | 4368 | int |
427cd150 | 4369 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4370 | { |
ab04a2af TT |
4371 | for (; bsp != NULL; bsp = bsp->next) |
4372 | { | |
427cd150 TT |
4373 | if (bsp->breakpoint_at == NULL) |
4374 | { | |
4375 | /* A moribund location can never explain a signal other than | |
4376 | GDB_SIGNAL_TRAP. */ | |
4377 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4378 | return 1; |
427cd150 TT |
4379 | } |
4380 | else | |
47591c29 PA |
4381 | { |
4382 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4383 | sig)) | |
4384 | return 1; | |
4385 | } | |
ab04a2af TT |
4386 | } |
4387 | ||
47591c29 | 4388 | return 0; |
ab04a2af TT |
4389 | } |
4390 | ||
4a64f543 MS |
4391 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4392 | stopped at. *BSP upon return is a bpstat which points to the | |
4393 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4394 | good for anything but further calls to bpstat_num). | |
4395 | ||
8671a17b PA |
4396 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4397 | Return -1 if stopped at a breakpoint that has been deleted since | |
4398 | we set it. | |
4399 | Return 1 otherwise. */ | |
c906108c SS |
4400 | |
4401 | int | |
8671a17b | 4402 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4403 | { |
4404 | struct breakpoint *b; | |
4405 | ||
4406 | if ((*bsp) == NULL) | |
4407 | return 0; /* No more breakpoint values */ | |
8671a17b | 4408 | |
4a64f543 MS |
4409 | /* We assume we'll never have several bpstats that correspond to a |
4410 | single breakpoint -- otherwise, this function might return the | |
4411 | same number more than once and this will look ugly. */ | |
f431efe5 | 4412 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4413 | *bsp = (*bsp)->next; |
4414 | if (b == NULL) | |
4415 | return -1; /* breakpoint that's been deleted since */ | |
4416 | ||
4417 | *num = b->number; /* We have its number */ | |
4418 | return 1; | |
c906108c SS |
4419 | } |
4420 | ||
e93ca019 | 4421 | /* See breakpoint.h. */ |
c906108c SS |
4422 | |
4423 | void | |
e93ca019 | 4424 | bpstat_clear_actions (void) |
c906108c | 4425 | { |
e93ca019 JK |
4426 | struct thread_info *tp; |
4427 | bpstat bs; | |
4428 | ||
4429 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4430 | return; | |
4431 | ||
4432 | tp = find_thread_ptid (inferior_ptid); | |
4433 | if (tp == NULL) | |
4434 | return; | |
4435 | ||
4436 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4437 | { |
d1b0a7bf | 4438 | bs->commands = NULL; |
abf85f46 | 4439 | |
c906108c SS |
4440 | if (bs->old_val != NULL) |
4441 | { | |
4442 | value_free (bs->old_val); | |
4443 | bs->old_val = NULL; | |
4444 | } | |
4445 | } | |
4446 | } | |
4447 | ||
f3b1572e PA |
4448 | /* Called when a command is about to proceed the inferior. */ |
4449 | ||
4450 | static void | |
4451 | breakpoint_about_to_proceed (void) | |
4452 | { | |
4453 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4454 | { | |
4455 | struct thread_info *tp = inferior_thread (); | |
4456 | ||
4457 | /* Allow inferior function calls in breakpoint commands to not | |
4458 | interrupt the command list. When the call finishes | |
4459 | successfully, the inferior will be standing at the same | |
4460 | breakpoint as if nothing happened. */ | |
16c381f0 | 4461 | if (tp->control.in_infcall) |
f3b1572e PA |
4462 | return; |
4463 | } | |
4464 | ||
4465 | breakpoint_proceeded = 1; | |
4466 | } | |
4467 | ||
4a64f543 MS |
4468 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4469 | command. */ | |
c906108c | 4470 | static void |
4efb68b1 | 4471 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4472 | { |
4473 | executing_breakpoint_commands = 0; | |
4474 | } | |
4475 | ||
abf85f46 JK |
4476 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4477 | or its equivalent. */ | |
4478 | ||
4479 | static int | |
4480 | command_line_is_silent (struct command_line *cmd) | |
4481 | { | |
4f45d445 | 4482 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4483 | } |
4484 | ||
4a64f543 MS |
4485 | /* Execute all the commands associated with all the breakpoints at |
4486 | this location. Any of these commands could cause the process to | |
4487 | proceed beyond this point, etc. We look out for such changes by | |
4488 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4489 | |
347bddb7 PA |
4490 | Returns true if a breakpoint command resumed the inferior. In that |
4491 | case, it is the caller's responsibility to recall it again with the | |
4492 | bpstat of the current thread. */ | |
4493 | ||
4494 | static int | |
4495 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4496 | { |
4497 | bpstat bs; | |
4498 | struct cleanup *old_chain; | |
347bddb7 | 4499 | int again = 0; |
c906108c SS |
4500 | |
4501 | /* Avoid endless recursion if a `source' command is contained | |
4502 | in bs->commands. */ | |
4503 | if (executing_breakpoint_commands) | |
347bddb7 | 4504 | return 0; |
c906108c SS |
4505 | |
4506 | executing_breakpoint_commands = 1; | |
4507 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4508 | ||
1ac32117 | 4509 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4510 | |
4a64f543 | 4511 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4512 | bs = *bsp; |
4513 | ||
4514 | breakpoint_proceeded = 0; | |
4515 | for (; bs != NULL; bs = bs->next) | |
4516 | { | |
d1b0a7bf | 4517 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4518 | |
4519 | /* Take ownership of the BSP's command tree, if it has one. | |
4520 | ||
4521 | The command tree could legitimately contain commands like | |
4522 | 'step' and 'next', which call clear_proceed_status, which | |
4523 | frees stop_bpstat's command tree. To make sure this doesn't | |
4524 | free the tree we're executing out from under us, we need to | |
4525 | take ownership of the tree ourselves. Since a given bpstat's | |
4526 | commands are only executed once, we don't need to copy it; we | |
4527 | can clear the pointer in the bpstat, and make sure we free | |
4528 | the tree when we're done. */ | |
d1b0a7bf | 4529 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4530 | bs->commands = NULL; |
d1b0a7bf TT |
4531 | if (ccmd != NULL) |
4532 | cmd = ccmd.get (); | |
abf85f46 JK |
4533 | if (command_line_is_silent (cmd)) |
4534 | { | |
4535 | /* The action has been already done by bpstat_stop_status. */ | |
4536 | cmd = cmd->next; | |
4537 | } | |
6c50ab1c | 4538 | |
c906108c SS |
4539 | while (cmd != NULL) |
4540 | { | |
4541 | execute_control_command (cmd); | |
4542 | ||
4543 | if (breakpoint_proceeded) | |
4544 | break; | |
4545 | else | |
4546 | cmd = cmd->next; | |
4547 | } | |
6c50ab1c | 4548 | |
c906108c | 4549 | if (breakpoint_proceeded) |
32c1e744 | 4550 | { |
cb814510 | 4551 | if (current_ui->async) |
347bddb7 PA |
4552 | /* If we are in async mode, then the target might be still |
4553 | running, not stopped at any breakpoint, so nothing for | |
4554 | us to do here -- just return to the event loop. */ | |
4555 | ; | |
32c1e744 VP |
4556 | else |
4557 | /* In sync mode, when execute_control_command returns | |
4558 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4559 | Breakpoint commands for that stop were not run, since |
4560 | execute_command does not run breakpoint commands -- | |
4561 | only command_line_handler does, but that one is not | |
4562 | involved in execution of breakpoint commands. So, we | |
4563 | can now execute breakpoint commands. It should be | |
4564 | noted that making execute_command do bpstat actions is | |
4565 | not an option -- in this case we'll have recursive | |
4566 | invocation of bpstat for each breakpoint with a | |
4567 | command, and can easily blow up GDB stack. Instead, we | |
4568 | return true, which will trigger the caller to recall us | |
4569 | with the new stop_bpstat. */ | |
4570 | again = 1; | |
4571 | break; | |
32c1e744 | 4572 | } |
c906108c | 4573 | } |
c2b8ed2c | 4574 | do_cleanups (old_chain); |
347bddb7 PA |
4575 | return again; |
4576 | } | |
4577 | ||
4578 | void | |
4579 | bpstat_do_actions (void) | |
4580 | { | |
353d1d73 JK |
4581 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4582 | ||
347bddb7 PA |
4583 | /* Do any commands attached to breakpoint we are stopped at. */ |
4584 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4585 | && target_has_execution | |
4586 | && !is_exited (inferior_ptid) | |
4587 | && !is_executing (inferior_ptid)) | |
4588 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4589 | and only return when it is stopped at the next breakpoint, we | |
4590 | keep doing breakpoint actions until it returns false to | |
4591 | indicate the inferior was not resumed. */ | |
16c381f0 | 4592 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4593 | break; |
353d1d73 JK |
4594 | |
4595 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4596 | } |
4597 | ||
fa4727a6 DJ |
4598 | /* Print out the (old or new) value associated with a watchpoint. */ |
4599 | ||
4600 | static void | |
4601 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4602 | { | |
4603 | if (val == NULL) | |
4604 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4605 | else | |
79a45b7d TT |
4606 | { |
4607 | struct value_print_options opts; | |
4608 | get_user_print_options (&opts); | |
4609 | value_print (val, stream, &opts); | |
4610 | } | |
fa4727a6 DJ |
4611 | } |
4612 | ||
f303dbd6 PA |
4613 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4614 | debugging multiple threads. */ | |
4615 | ||
4616 | void | |
4617 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4618 | { | |
112e8700 | 4619 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4620 | return; |
4621 | ||
112e8700 | 4622 | uiout->text ("\n"); |
f303dbd6 PA |
4623 | |
4624 | if (show_thread_that_caused_stop ()) | |
4625 | { | |
4626 | const char *name; | |
4627 | struct thread_info *thr = inferior_thread (); | |
4628 | ||
112e8700 SM |
4629 | uiout->text ("Thread "); |
4630 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4631 | |
4632 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4633 | if (name != NULL) | |
4634 | { | |
112e8700 SM |
4635 | uiout->text (" \""); |
4636 | uiout->field_fmt ("name", "%s", name); | |
4637 | uiout->text ("\""); | |
f303dbd6 PA |
4638 | } |
4639 | ||
112e8700 | 4640 | uiout->text (" hit "); |
f303dbd6 PA |
4641 | } |
4642 | } | |
4643 | ||
e514a9d6 | 4644 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4645 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4646 | 'print_it' in the bpstat structure. Under some circumstances we |
4647 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4648 | normal_stop(). */ |
e514a9d6 JM |
4649 | |
4650 | static enum print_stop_action | |
4651 | print_bp_stop_message (bpstat bs) | |
4652 | { | |
4653 | switch (bs->print_it) | |
4654 | { | |
4655 | case print_it_noop: | |
4a64f543 | 4656 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4657 | return PRINT_UNKNOWN; |
4658 | break; | |
4659 | ||
4660 | case print_it_done: | |
4661 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4662 | relevant messages. */ |
e514a9d6 JM |
4663 | return PRINT_SRC_AND_LOC; |
4664 | break; | |
4665 | ||
4666 | case print_it_normal: | |
4f8d1dc6 | 4667 | { |
f431efe5 PA |
4668 | struct breakpoint *b = bs->breakpoint_at; |
4669 | ||
1a6a67de TJB |
4670 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4671 | which has since been deleted. */ | |
4672 | if (b == NULL) | |
4673 | return PRINT_UNKNOWN; | |
4674 | ||
348d480f PA |
4675 | /* Normal case. Call the breakpoint's print_it method. */ |
4676 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4677 | } |
348d480f | 4678 | break; |
3086aeae | 4679 | |
e514a9d6 | 4680 | default: |
8e65ff28 | 4681 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4682 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4683 | break; |
c906108c | 4684 | } |
c906108c SS |
4685 | } |
4686 | ||
edcc5120 TT |
4687 | /* A helper function that prints a shared library stopped event. */ |
4688 | ||
4689 | static void | |
4690 | print_solib_event (int is_catchpoint) | |
4691 | { | |
4692 | int any_deleted | |
4693 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4694 | int any_added | |
4695 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4696 | ||
4697 | if (!is_catchpoint) | |
4698 | { | |
4699 | if (any_added || any_deleted) | |
112e8700 | 4700 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4701 | else |
112e8700 SM |
4702 | current_uiout->text (_("Stopped due to shared library event (no " |
4703 | "libraries added or removed)\n")); | |
edcc5120 TT |
4704 | } |
4705 | ||
112e8700 SM |
4706 | if (current_uiout->is_mi_like_p ()) |
4707 | current_uiout->field_string ("reason", | |
4708 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4709 | |
4710 | if (any_deleted) | |
4711 | { | |
edcc5120 TT |
4712 | char *name; |
4713 | int ix; | |
4714 | ||
112e8700 | 4715 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4716 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
edcc5120 TT |
4717 | for (ix = 0; |
4718 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4719 | ix, name); | |
4720 | ++ix) | |
4721 | { | |
4722 | if (ix > 0) | |
112e8700 SM |
4723 | current_uiout->text (" "); |
4724 | current_uiout->field_string ("library", name); | |
4725 | current_uiout->text ("\n"); | |
edcc5120 | 4726 | } |
edcc5120 TT |
4727 | } |
4728 | ||
4729 | if (any_added) | |
4730 | { | |
4731 | struct so_list *iter; | |
4732 | int ix; | |
edcc5120 | 4733 | |
112e8700 | 4734 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4735 | ui_out_emit_list list_emitter (current_uiout, "added"); |
edcc5120 TT |
4736 | for (ix = 0; |
4737 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4738 | ix, iter); | |
4739 | ++ix) | |
4740 | { | |
4741 | if (ix > 0) | |
112e8700 SM |
4742 | current_uiout->text (" "); |
4743 | current_uiout->field_string ("library", iter->so_name); | |
4744 | current_uiout->text ("\n"); | |
edcc5120 | 4745 | } |
edcc5120 TT |
4746 | } |
4747 | } | |
4748 | ||
e514a9d6 JM |
4749 | /* Print a message indicating what happened. This is called from |
4750 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4751 | list - a list of the eventpoints that caused this stop. KIND is |
4752 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4753 | routine calls the generic print routine for printing a message |
4754 | about reasons for stopping. This will print (for example) the | |
4755 | "Breakpoint n," part of the output. The return value of this | |
4756 | routine is one of: | |
c906108c | 4757 | |
4a64f543 | 4758 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4759 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4760 | code to print the location. An example is |
c5aa993b JM |
4761 | "Breakpoint 1, " which should be followed by |
4762 | the location. | |
917317f4 | 4763 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4764 | to also print the location part of the message. |
4765 | An example is the catch/throw messages, which | |
4a64f543 | 4766 | don't require a location appended to the end. |
917317f4 | 4767 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4768 | further info to be printed. */ |
c906108c | 4769 | |
917317f4 | 4770 | enum print_stop_action |
36dfb11c | 4771 | bpstat_print (bpstat bs, int kind) |
c906108c | 4772 | { |
f486487f | 4773 | enum print_stop_action val; |
c5aa993b | 4774 | |
c906108c | 4775 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4776 | (Currently all watchpoints go on the bpstat whether hit or not. |
4777 | That probably could (should) be changed, provided care is taken | |
c906108c | 4778 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4779 | for (; bs; bs = bs->next) |
4780 | { | |
4781 | val = print_bp_stop_message (bs); | |
4782 | if (val == PRINT_SRC_ONLY | |
4783 | || val == PRINT_SRC_AND_LOC | |
4784 | || val == PRINT_NOTHING) | |
4785 | return val; | |
4786 | } | |
c906108c | 4787 | |
36dfb11c TT |
4788 | /* If we had hit a shared library event breakpoint, |
4789 | print_bp_stop_message would print out this message. If we hit an | |
4790 | OS-level shared library event, do the same thing. */ | |
4791 | if (kind == TARGET_WAITKIND_LOADED) | |
4792 | { | |
edcc5120 | 4793 | print_solib_event (0); |
36dfb11c TT |
4794 | return PRINT_NOTHING; |
4795 | } | |
4796 | ||
e514a9d6 | 4797 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4798 | with and nothing was printed. */ |
917317f4 | 4799 | return PRINT_UNKNOWN; |
c906108c SS |
4800 | } |
4801 | ||
bf469271 | 4802 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4803 | |
bf469271 PA |
4804 | static bool |
4805 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4806 | { |
278cd55f | 4807 | struct value *mark = value_mark (); |
bf469271 | 4808 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4809 | |
c906108c | 4810 | value_free_to_mark (mark); |
bf469271 | 4811 | return res; |
c906108c SS |
4812 | } |
4813 | ||
5760d0ab | 4814 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4815 | |
04afa70c TT |
4816 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4817 | : next (NULL), | |
4818 | bp_location_at (bl), | |
4819 | breakpoint_at (bl->owner), | |
4820 | commands (NULL), | |
4821 | old_val (NULL), | |
4822 | print (0), | |
4823 | stop (0), | |
4824 | print_it (print_it_normal) | |
c906108c | 4825 | { |
f431efe5 | 4826 | incref_bp_location (bl); |
04afa70c TT |
4827 | **bs_link_pointer = this; |
4828 | *bs_link_pointer = &next; | |
4829 | } | |
4830 | ||
4831 | bpstats::bpstats () | |
4832 | : next (NULL), | |
4833 | bp_location_at (NULL), | |
4834 | breakpoint_at (NULL), | |
4835 | commands (NULL), | |
4836 | old_val (NULL), | |
4837 | print (0), | |
4838 | stop (0), | |
4839 | print_it (print_it_normal) | |
4840 | { | |
c906108c SS |
4841 | } |
4842 | \f | |
d983da9c DJ |
4843 | /* The target has stopped with waitstatus WS. Check if any hardware |
4844 | watchpoints have triggered, according to the target. */ | |
4845 | ||
4846 | int | |
4847 | watchpoints_triggered (struct target_waitstatus *ws) | |
4848 | { | |
d92524f1 | 4849 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4850 | CORE_ADDR addr; |
4851 | struct breakpoint *b; | |
4852 | ||
4853 | if (!stopped_by_watchpoint) | |
4854 | { | |
4855 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4856 | as not triggered. */ | |
4857 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4858 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4859 | { |
4860 | struct watchpoint *w = (struct watchpoint *) b; | |
4861 | ||
4862 | w->watchpoint_triggered = watch_triggered_no; | |
4863 | } | |
d983da9c DJ |
4864 | |
4865 | return 0; | |
4866 | } | |
4867 | ||
4868 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4869 | { | |
4870 | /* We were stopped by a watchpoint, but we don't know where. | |
4871 | Mark all watchpoints as unknown. */ | |
4872 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4873 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4874 | { |
4875 | struct watchpoint *w = (struct watchpoint *) b; | |
4876 | ||
4877 | w->watchpoint_triggered = watch_triggered_unknown; | |
4878 | } | |
d983da9c | 4879 | |
3c4797ba | 4880 | return 1; |
d983da9c DJ |
4881 | } |
4882 | ||
4883 | /* The target could report the data address. Mark watchpoints | |
4884 | affected by this data address as triggered, and all others as not | |
4885 | triggered. */ | |
4886 | ||
4887 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4888 | if (is_hardware_watchpoint (b)) |
d983da9c | 4889 | { |
3a5c3e22 | 4890 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4891 | struct bp_location *loc; |
d983da9c | 4892 | |
3a5c3e22 | 4893 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4894 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4895 | { |
3a5c3e22 | 4896 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4897 | { |
3a5c3e22 PA |
4898 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4899 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4900 | |
4901 | if (newaddr == start) | |
4902 | { | |
3a5c3e22 | 4903 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4904 | break; |
4905 | } | |
4906 | } | |
4907 | /* Exact match not required. Within range is sufficient. */ | |
4908 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4909 | addr, loc->address, | |
4910 | loc->length)) | |
4911 | { | |
3a5c3e22 | 4912 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4913 | break; |
4914 | } | |
4915 | } | |
d983da9c DJ |
4916 | } |
4917 | ||
4918 | return 1; | |
4919 | } | |
4920 | ||
bf469271 PA |
4921 | /* Possible return values for watchpoint_check. */ |
4922 | enum wp_check_result | |
4923 | { | |
4924 | /* The watchpoint has been deleted. */ | |
4925 | WP_DELETED = 1, | |
4926 | ||
4927 | /* The value has changed. */ | |
4928 | WP_VALUE_CHANGED = 2, | |
4929 | ||
4930 | /* The value has not changed. */ | |
4931 | WP_VALUE_NOT_CHANGED = 3, | |
4932 | ||
4933 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4934 | WP_IGNORE = 4, | |
4935 | }; | |
c906108c SS |
4936 | |
4937 | #define BP_TEMPFLAG 1 | |
4938 | #define BP_HARDWAREFLAG 2 | |
4939 | ||
4a64f543 | 4940 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4941 | changed. */ |
553e4c11 | 4942 | |
bf469271 PA |
4943 | static wp_check_result |
4944 | watchpoint_check (bpstat bs) | |
c906108c | 4945 | { |
3a5c3e22 | 4946 | struct watchpoint *b; |
c906108c SS |
4947 | struct frame_info *fr; |
4948 | int within_current_scope; | |
4949 | ||
f431efe5 | 4950 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4951 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4952 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4953 | |
f6bc2008 PA |
4954 | /* If this is a local watchpoint, we only want to check if the |
4955 | watchpoint frame is in scope if the current thread is the thread | |
4956 | that was used to create the watchpoint. */ | |
4957 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4958 | return WP_IGNORE; |
f6bc2008 | 4959 | |
c906108c SS |
4960 | if (b->exp_valid_block == NULL) |
4961 | within_current_scope = 1; | |
4962 | else | |
4963 | { | |
edb3359d DJ |
4964 | struct frame_info *frame = get_current_frame (); |
4965 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4966 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4967 | ||
c9cf6e20 | 4968 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4969 | still in the function but the stack frame has already been |
4970 | invalidated. Since we can't rely on the values of local | |
4971 | variables after the stack has been destroyed, we are treating | |
4972 | the watchpoint in that state as `not changed' without further | |
4973 | checking. Don't mark watchpoints as changed if the current | |
4974 | frame is in an epilogue - even if they are in some other | |
4975 | frame, our view of the stack is likely to be wrong and | |
4976 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4977 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4978 | return WP_IGNORE; |
a0f49112 | 4979 | |
101dcfbe | 4980 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4981 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4982 | |
4983 | /* If we've gotten confused in the unwinder, we might have | |
4984 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4985 | if (within_current_scope) |
4986 | { | |
4987 | struct symbol *function; | |
4988 | ||
4989 | function = get_frame_function (fr); | |
4990 | if (function == NULL | |
4991 | || !contained_in (b->exp_valid_block, | |
4992 | SYMBOL_BLOCK_VALUE (function))) | |
4993 | within_current_scope = 0; | |
4994 | } | |
69fbadd5 | 4995 | |
edb3359d | 4996 | if (within_current_scope) |
c906108c SS |
4997 | /* If we end up stopping, the current frame will get selected |
4998 | in normal_stop. So this call to select_frame won't affect | |
4999 | the user. */ | |
0f7d239c | 5000 | select_frame (fr); |
c906108c | 5001 | } |
c5aa993b | 5002 | |
c906108c SS |
5003 | if (within_current_scope) |
5004 | { | |
4a64f543 MS |
5005 | /* We use value_{,free_to_}mark because it could be a *long* |
5006 | time before we return to the command level and call | |
5007 | free_all_values. We can't call free_all_values because we | |
5008 | might be in the middle of evaluating a function call. */ | |
c906108c | 5009 | |
0cf6dd15 | 5010 | int pc = 0; |
9c06b0b4 | 5011 | struct value *mark; |
fa4727a6 DJ |
5012 | struct value *new_val; |
5013 | ||
c1fc2657 | 5014 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
5015 | /* Since we don't know the exact trigger address (from |
5016 | stopped_data_address), just tell the user we've triggered | |
5017 | a mask watchpoint. */ | |
5018 | return WP_VALUE_CHANGED; | |
5019 | ||
5020 | mark = value_mark (); | |
4d01a485 | 5021 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 5022 | |
bb9d5f81 PP |
5023 | if (b->val_bitsize != 0) |
5024 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5025 | ||
4a64f543 MS |
5026 | /* We use value_equal_contents instead of value_equal because |
5027 | the latter coerces an array to a pointer, thus comparing just | |
5028 | the address of the array instead of its contents. This is | |
5029 | not what we want. */ | |
fa4727a6 | 5030 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 5031 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 5032 | { |
fa4727a6 DJ |
5033 | if (new_val != NULL) |
5034 | { | |
5035 | release_value (new_val); | |
5036 | value_free_to_mark (mark); | |
5037 | } | |
c906108c SS |
5038 | bs->old_val = b->val; |
5039 | b->val = new_val; | |
fa4727a6 | 5040 | b->val_valid = 1; |
c906108c SS |
5041 | return WP_VALUE_CHANGED; |
5042 | } | |
5043 | else | |
5044 | { | |
60e1c644 | 5045 | /* Nothing changed. */ |
c906108c | 5046 | value_free_to_mark (mark); |
c906108c SS |
5047 | return WP_VALUE_NOT_CHANGED; |
5048 | } | |
5049 | } | |
5050 | else | |
5051 | { | |
5052 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
5053 | if we temporarily ignored the watchpoint, then when |
5054 | we reenter the block in which it is valid it contains | |
5055 | garbage (in the case of a function, it may have two | |
5056 | garbage values, one before and one after the prologue). | |
5057 | So we can't even detect the first assignment to it and | |
5058 | watch after that (since the garbage may or may not equal | |
5059 | the first value assigned). */ | |
348d480f PA |
5060 | /* We print all the stop information in |
5061 | breakpoint_ops->print_it, but in this case, by the time we | |
5062 | call breakpoint_ops->print_it this bp will be deleted | |
5063 | already. So we have no choice but print the information | |
5064 | here. */ | |
468afe6c | 5065 | |
0e454242 | 5066 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
5067 | { |
5068 | struct ui_out *uiout = current_uiout; | |
5069 | ||
112e8700 SM |
5070 | if (uiout->is_mi_like_p ()) |
5071 | uiout->field_string | |
5072 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
5073 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 5074 | uiout->field_int ("wpnum", b->number); |
112e8700 | 5075 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
5076 | "which its expression is valid.\n"); |
5077 | } | |
4ce44c66 | 5078 | |
cdac0397 | 5079 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5080 | b->commands = NULL; |
d0fb5eae | 5081 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5082 | |
5083 | return WP_DELETED; | |
5084 | } | |
5085 | } | |
5086 | ||
18a18393 | 5087 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5088 | breakpoint location BL. This function does not check if we should |
5089 | stop, only if BL explains the stop. */ | |
5090 | ||
18a18393 | 5091 | static int |
6c95b8df | 5092 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5093 | struct address_space *aspace, CORE_ADDR bp_addr, |
5094 | const struct target_waitstatus *ws) | |
18a18393 VP |
5095 | { |
5096 | struct breakpoint *b = bl->owner; | |
5097 | ||
348d480f | 5098 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5099 | gdb_assert (b != NULL); |
5100 | ||
09ac7c10 | 5101 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5102 | } |
5103 | ||
3a5c3e22 PA |
5104 | /* Determine if the watched values have actually changed, and we |
5105 | should stop. If not, set BS->stop to 0. */ | |
5106 | ||
18a18393 VP |
5107 | static void |
5108 | bpstat_check_watchpoint (bpstat bs) | |
5109 | { | |
2bdf28a0 | 5110 | const struct bp_location *bl; |
3a5c3e22 | 5111 | struct watchpoint *b; |
2bdf28a0 JK |
5112 | |
5113 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5114 | bl = bs->bp_location_at; |
2bdf28a0 | 5115 | gdb_assert (bl != NULL); |
3a5c3e22 | 5116 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5117 | gdb_assert (b != NULL); |
18a18393 | 5118 | |
18a18393 | 5119 | { |
18a18393 VP |
5120 | int must_check_value = 0; |
5121 | ||
c1fc2657 | 5122 | if (b->type == bp_watchpoint) |
18a18393 VP |
5123 | /* For a software watchpoint, we must always check the |
5124 | watched value. */ | |
5125 | must_check_value = 1; | |
5126 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5127 | /* We have a hardware watchpoint (read, write, or access) | |
5128 | and the target earlier reported an address watched by | |
5129 | this watchpoint. */ | |
5130 | must_check_value = 1; | |
5131 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5132 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5133 | /* We were stopped by a hardware watchpoint, but the target could |
5134 | not report the data address. We must check the watchpoint's | |
5135 | value. Access and read watchpoints are out of luck; without | |
5136 | a data address, we can't figure it out. */ | |
5137 | must_check_value = 1; | |
3a5c3e22 | 5138 | |
18a18393 VP |
5139 | if (must_check_value) |
5140 | { | |
bf469271 PA |
5141 | wp_check_result e; |
5142 | ||
5143 | TRY | |
5144 | { | |
5145 | e = watchpoint_check (bs); | |
5146 | } | |
5147 | CATCH (ex, RETURN_MASK_ALL) | |
5148 | { | |
5149 | exception_fprintf (gdb_stderr, ex, | |
5150 | "Error evaluating expression " | |
5151 | "for watchpoint %d\n", | |
5152 | b->number); | |
5153 | ||
5154 | SWITCH_THRU_ALL_UIS () | |
5155 | { | |
5156 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5157 | b->number); | |
5158 | } | |
5159 | watchpoint_del_at_next_stop (b); | |
5160 | e = WP_DELETED; | |
5161 | } | |
5162 | END_CATCH | |
5163 | ||
18a18393 VP |
5164 | switch (e) |
5165 | { | |
5166 | case WP_DELETED: | |
5167 | /* We've already printed what needs to be printed. */ | |
5168 | bs->print_it = print_it_done; | |
5169 | /* Stop. */ | |
5170 | break; | |
60e1c644 PA |
5171 | case WP_IGNORE: |
5172 | bs->print_it = print_it_noop; | |
5173 | bs->stop = 0; | |
5174 | break; | |
18a18393 | 5175 | case WP_VALUE_CHANGED: |
c1fc2657 | 5176 | if (b->type == bp_read_watchpoint) |
18a18393 | 5177 | { |
85d721b8 PA |
5178 | /* There are two cases to consider here: |
5179 | ||
4a64f543 | 5180 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5181 | In that case, trust the target, and always report |
5182 | the watchpoint hit to the user. Even though | |
5183 | reads don't cause value changes, the value may | |
5184 | have changed since the last time it was read, and | |
5185 | since we're not trapping writes, we will not see | |
5186 | those, and as such we should ignore our notion of | |
5187 | old value. | |
5188 | ||
4a64f543 | 5189 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5190 | reads and writes. There are two ways this may |
5191 | happen: | |
5192 | ||
4a64f543 | 5193 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5194 | reads only, but can break on accesses (reads or |
5195 | writes), such as e.g., x86. We detect this case | |
5196 | at the time we try to insert read watchpoints. | |
5197 | ||
4a64f543 | 5198 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5199 | watchpoints, but, the user set an access or write |
5200 | watchpoint watching the same memory as this read | |
5201 | watchpoint. | |
5202 | ||
5203 | If we're watching memory writes as well as reads, | |
5204 | ignore watchpoint hits when we find that the | |
5205 | value hasn't changed, as reads don't cause | |
5206 | changes. This still gives false positives when | |
5207 | the program writes the same value to memory as | |
5208 | what there was already in memory (we will confuse | |
5209 | it for a read), but it's much better than | |
5210 | nothing. */ | |
5211 | ||
5212 | int other_write_watchpoint = 0; | |
5213 | ||
5214 | if (bl->watchpoint_type == hw_read) | |
5215 | { | |
5216 | struct breakpoint *other_b; | |
5217 | ||
5218 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5219 | if (other_b->type == bp_hardware_watchpoint |
5220 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5221 | { |
3a5c3e22 PA |
5222 | struct watchpoint *other_w = |
5223 | (struct watchpoint *) other_b; | |
5224 | ||
5225 | if (other_w->watchpoint_triggered | |
5226 | == watch_triggered_yes) | |
5227 | { | |
5228 | other_write_watchpoint = 1; | |
5229 | break; | |
5230 | } | |
85d721b8 PA |
5231 | } |
5232 | } | |
5233 | ||
5234 | if (other_write_watchpoint | |
5235 | || bl->watchpoint_type == hw_access) | |
5236 | { | |
5237 | /* We're watching the same memory for writes, | |
5238 | and the value changed since the last time we | |
5239 | updated it, so this trap must be for a write. | |
5240 | Ignore it. */ | |
5241 | bs->print_it = print_it_noop; | |
5242 | bs->stop = 0; | |
5243 | } | |
18a18393 VP |
5244 | } |
5245 | break; | |
5246 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5247 | if (b->type == bp_hardware_watchpoint |
5248 | || b->type == bp_watchpoint) | |
18a18393 VP |
5249 | { |
5250 | /* Don't stop: write watchpoints shouldn't fire if | |
5251 | the value hasn't changed. */ | |
5252 | bs->print_it = print_it_noop; | |
5253 | bs->stop = 0; | |
5254 | } | |
5255 | /* Stop. */ | |
5256 | break; | |
5257 | default: | |
5258 | /* Can't happen. */ | |
18a18393 VP |
5259 | break; |
5260 | } | |
5261 | } | |
5262 | else /* must_check_value == 0 */ | |
5263 | { | |
5264 | /* This is a case where some watchpoint(s) triggered, but | |
5265 | not at the address of this watchpoint, or else no | |
5266 | watchpoint triggered after all. So don't print | |
5267 | anything for this watchpoint. */ | |
5268 | bs->print_it = print_it_noop; | |
5269 | bs->stop = 0; | |
5270 | } | |
5271 | } | |
5272 | } | |
5273 | ||
7d4df6a4 DE |
5274 | /* For breakpoints that are currently marked as telling gdb to stop, |
5275 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5276 | of breakpoint referred to by BS. If we should not stop for this |
5277 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5278 | |
18a18393 VP |
5279 | static void |
5280 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5281 | { | |
2bdf28a0 JK |
5282 | const struct bp_location *bl; |
5283 | struct breakpoint *b; | |
bf469271 PA |
5284 | /* Assume stop. */ |
5285 | bool condition_result = true; | |
7d4df6a4 DE |
5286 | struct expression *cond; |
5287 | ||
5288 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5289 | |
5290 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5291 | bl = bs->bp_location_at; |
2bdf28a0 | 5292 | gdb_assert (bl != NULL); |
f431efe5 | 5293 | b = bs->breakpoint_at; |
2bdf28a0 | 5294 | gdb_assert (b != NULL); |
18a18393 | 5295 | |
b775012e LM |
5296 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5297 | need to do so again since GDB does not know if we stopped due to a | |
5298 | breakpoint or a single step breakpoint. */ | |
5299 | ||
18a18393 | 5300 | if (frame_id_p (b->frame_id) |
edb3359d | 5301 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5302 | { |
7d4df6a4 DE |
5303 | bs->stop = 0; |
5304 | return; | |
5305 | } | |
60e1c644 | 5306 | |
12ab52e9 PA |
5307 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5308 | evaluating the condition if this isn't the specified | |
5309 | thread/task. */ | |
5d5658a1 | 5310 | if ((b->thread != -1 && b->thread != ptid_to_global_thread_id (ptid)) |
12ab52e9 PA |
5311 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) |
5312 | ||
6c1b0f7b DE |
5313 | { |
5314 | bs->stop = 0; | |
5315 | return; | |
5316 | } | |
5317 | ||
6dddc817 DE |
5318 | /* Evaluate extension language breakpoints that have a "stop" method |
5319 | implemented. */ | |
5320 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5321 | |
7d4df6a4 DE |
5322 | if (is_watchpoint (b)) |
5323 | { | |
5324 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5325 | |
4d01a485 | 5326 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5327 | } |
5328 | else | |
4d01a485 | 5329 | cond = bl->cond.get (); |
60e1c644 | 5330 | |
7d4df6a4 DE |
5331 | if (cond && b->disposition != disp_del_at_next_stop) |
5332 | { | |
5333 | int within_current_scope = 1; | |
5334 | struct watchpoint * w; | |
60e1c644 | 5335 | |
7d4df6a4 DE |
5336 | /* We use value_mark and value_free_to_mark because it could |
5337 | be a long time before we return to the command level and | |
5338 | call free_all_values. We can't call free_all_values | |
5339 | because we might be in the middle of evaluating a | |
5340 | function call. */ | |
5341 | struct value *mark = value_mark (); | |
5342 | ||
5343 | if (is_watchpoint (b)) | |
5344 | w = (struct watchpoint *) b; | |
5345 | else | |
5346 | w = NULL; | |
5347 | ||
5348 | /* Need to select the frame, with all that implies so that | |
5349 | the conditions will have the right context. Because we | |
5350 | use the frame, we will not see an inlined function's | |
5351 | variables when we arrive at a breakpoint at the start | |
5352 | of the inlined function; the current frame will be the | |
5353 | call site. */ | |
5354 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5355 | select_frame (get_current_frame ()); | |
5356 | else | |
18a18393 | 5357 | { |
7d4df6a4 DE |
5358 | struct frame_info *frame; |
5359 | ||
5360 | /* For local watchpoint expressions, which particular | |
5361 | instance of a local is being watched matters, so we | |
5362 | keep track of the frame to evaluate the expression | |
5363 | in. To evaluate the condition however, it doesn't | |
5364 | really matter which instantiation of the function | |
5365 | where the condition makes sense triggers the | |
5366 | watchpoint. This allows an expression like "watch | |
5367 | global if q > 10" set in `func', catch writes to | |
5368 | global on all threads that call `func', or catch | |
5369 | writes on all recursive calls of `func' by a single | |
5370 | thread. We simply always evaluate the condition in | |
5371 | the innermost frame that's executing where it makes | |
5372 | sense to evaluate the condition. It seems | |
5373 | intuitive. */ | |
5374 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5375 | if (frame != NULL) | |
5376 | select_frame (frame); | |
5377 | else | |
5378 | within_current_scope = 0; | |
18a18393 | 5379 | } |
7d4df6a4 | 5380 | if (within_current_scope) |
bf469271 PA |
5381 | { |
5382 | TRY | |
5383 | { | |
5384 | condition_result = breakpoint_cond_eval (cond); | |
5385 | } | |
5386 | CATCH (ex, RETURN_MASK_ALL) | |
5387 | { | |
5388 | exception_fprintf (gdb_stderr, ex, | |
5389 | "Error in testing breakpoint condition:\n"); | |
5390 | } | |
5391 | END_CATCH | |
5392 | } | |
7d4df6a4 | 5393 | else |
18a18393 | 5394 | { |
7d4df6a4 DE |
5395 | warning (_("Watchpoint condition cannot be tested " |
5396 | "in the current scope")); | |
5397 | /* If we failed to set the right context for this | |
5398 | watchpoint, unconditionally report it. */ | |
18a18393 | 5399 | } |
7d4df6a4 DE |
5400 | /* FIXME-someday, should give breakpoint #. */ |
5401 | value_free_to_mark (mark); | |
18a18393 | 5402 | } |
7d4df6a4 | 5403 | |
bf469271 | 5404 | if (cond && !condition_result) |
7d4df6a4 DE |
5405 | { |
5406 | bs->stop = 0; | |
5407 | } | |
7d4df6a4 DE |
5408 | else if (b->ignore_count > 0) |
5409 | { | |
5410 | b->ignore_count--; | |
5411 | bs->stop = 0; | |
5412 | /* Increase the hit count even though we don't stop. */ | |
5413 | ++(b->hit_count); | |
5414 | observer_notify_breakpoint_modified (b); | |
5415 | } | |
18a18393 VP |
5416 | } |
5417 | ||
1cf4d951 PA |
5418 | /* Returns true if we need to track moribund locations of LOC's type |
5419 | on the current target. */ | |
5420 | ||
5421 | static int | |
5422 | need_moribund_for_location_type (struct bp_location *loc) | |
5423 | { | |
5424 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5425 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5426 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5427 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5428 | } | |
5429 | ||
18a18393 | 5430 | |
9709f61c | 5431 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5432 | BP_ADDR in thread PTID. |
c906108c | 5433 | |
d983da9c | 5434 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5435 | don't understand this stop. Result is a chain of bpstat's such |
5436 | that: | |
c906108c | 5437 | |
c5aa993b | 5438 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5439 | |
c5aa993b | 5440 | if we understand why we stopped, the result is not null. |
c906108c | 5441 | |
c5aa993b JM |
5442 | Each element of the chain refers to a particular breakpoint or |
5443 | watchpoint at which we have stopped. (We may have stopped for | |
5444 | several reasons concurrently.) | |
c906108c | 5445 | |
c5aa993b JM |
5446 | Each element of the chain has valid next, breakpoint_at, |
5447 | commands, FIXME??? fields. */ | |
c906108c SS |
5448 | |
5449 | bpstat | |
6c95b8df | 5450 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5451 | CORE_ADDR bp_addr, ptid_t ptid, |
5452 | const struct target_waitstatus *ws) | |
c906108c | 5453 | { |
0d381245 | 5454 | struct breakpoint *b = NULL; |
afe38095 | 5455 | struct bp_location *bl; |
20874c92 | 5456 | struct bp_location *loc; |
5760d0ab JK |
5457 | /* First item of allocated bpstat's. */ |
5458 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5459 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5460 | bpstat bs; |
20874c92 | 5461 | int ix; |
429374b8 | 5462 | int need_remove_insert; |
f431efe5 | 5463 | int removed_any; |
c906108c | 5464 | |
f431efe5 PA |
5465 | /* First, build the bpstat chain with locations that explain a |
5466 | target stop, while being careful to not set the target running, | |
5467 | as that may invalidate locations (in particular watchpoint | |
5468 | locations are recreated). Resuming will happen here with | |
5469 | breakpoint conditions or watchpoint expressions that include | |
5470 | inferior function calls. */ | |
c5aa993b | 5471 | |
429374b8 JK |
5472 | ALL_BREAKPOINTS (b) |
5473 | { | |
1a853c52 | 5474 | if (!breakpoint_enabled (b)) |
429374b8 | 5475 | continue; |
a5606eee | 5476 | |
429374b8 JK |
5477 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5478 | { | |
4a64f543 MS |
5479 | /* For hardware watchpoints, we look only at the first |
5480 | location. The watchpoint_check function will work on the | |
5481 | entire expression, not the individual locations. For | |
5482 | read watchpoints, the watchpoints_triggered function has | |
5483 | checked all locations already. */ | |
429374b8 JK |
5484 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5485 | break; | |
18a18393 | 5486 | |
f6592439 | 5487 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5488 | continue; |
c5aa993b | 5489 | |
09ac7c10 | 5490 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5491 | continue; |
c5aa993b | 5492 | |
4a64f543 MS |
5493 | /* Come here if it's a watchpoint, or if the break address |
5494 | matches. */ | |
c5aa993b | 5495 | |
04afa70c | 5496 | bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
4a64f543 | 5497 | explain stop. */ |
c5aa993b | 5498 | |
f431efe5 PA |
5499 | /* Assume we stop. Should we find a watchpoint that is not |
5500 | actually triggered, or if the condition of the breakpoint | |
5501 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5502 | bs->stop = 1; |
5503 | bs->print = 1; | |
d983da9c | 5504 | |
f431efe5 PA |
5505 | /* If this is a scope breakpoint, mark the associated |
5506 | watchpoint as triggered so that we will handle the | |
5507 | out-of-scope event. We'll get to the watchpoint next | |
5508 | iteration. */ | |
d0fb5eae | 5509 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5510 | { |
5511 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5512 | ||
5513 | w->watchpoint_triggered = watch_triggered_yes; | |
5514 | } | |
f431efe5 PA |
5515 | } |
5516 | } | |
5517 | ||
7c16b83e | 5518 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5519 | if (!target_supports_stopped_by_sw_breakpoint () |
5520 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5521 | { |
1cf4d951 | 5522 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) |
f431efe5 | 5523 | { |
1cf4d951 PA |
5524 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5525 | && need_moribund_for_location_type (loc)) | |
5526 | { | |
04afa70c | 5527 | bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5528 | /* For hits of moribund locations, we should just proceed. */ |
5529 | bs->stop = 0; | |
5530 | bs->print = 0; | |
5531 | bs->print_it = print_it_noop; | |
5532 | } | |
f431efe5 PA |
5533 | } |
5534 | } | |
5535 | ||
edcc5120 TT |
5536 | /* A bit of special processing for shlib breakpoints. We need to |
5537 | process solib loading here, so that the lists of loaded and | |
5538 | unloaded libraries are correct before we handle "catch load" and | |
5539 | "catch unload". */ | |
5540 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5541 | { | |
5d268276 | 5542 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5543 | { |
5544 | handle_solib_event (); | |
5545 | break; | |
5546 | } | |
5547 | } | |
5548 | ||
f431efe5 PA |
5549 | /* Now go through the locations that caused the target to stop, and |
5550 | check whether we're interested in reporting this stop to higher | |
5551 | layers, or whether we should resume the target transparently. */ | |
5552 | ||
5553 | removed_any = 0; | |
5554 | ||
5760d0ab | 5555 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5556 | { |
5557 | if (!bs->stop) | |
5558 | continue; | |
5559 | ||
f431efe5 | 5560 | b = bs->breakpoint_at; |
348d480f PA |
5561 | b->ops->check_status (bs); |
5562 | if (bs->stop) | |
28010a5d | 5563 | { |
348d480f | 5564 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5565 | |
429374b8 JK |
5566 | if (bs->stop) |
5567 | { | |
5568 | ++(b->hit_count); | |
8d3788bd | 5569 | observer_notify_breakpoint_modified (b); |
c906108c | 5570 | |
4a64f543 | 5571 | /* We will stop here. */ |
429374b8 JK |
5572 | if (b->disposition == disp_disable) |
5573 | { | |
816338b5 | 5574 | --(b->enable_count); |
1a853c52 | 5575 | if (b->enable_count <= 0) |
429374b8 | 5576 | b->enable_state = bp_disabled; |
f431efe5 | 5577 | removed_any = 1; |
429374b8 JK |
5578 | } |
5579 | if (b->silent) | |
5580 | bs->print = 0; | |
5581 | bs->commands = b->commands; | |
abf85f46 | 5582 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5583 | ? bs->commands.get () : NULL)) |
abf85f46 | 5584 | bs->print = 0; |
9d6e6e84 HZ |
5585 | |
5586 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5587 | } |
5588 | ||
348d480f | 5589 | } |
a9b3a50f PA |
5590 | |
5591 | /* Print nothing for this entry if we don't stop or don't | |
5592 | print. */ | |
5593 | if (!bs->stop || !bs->print) | |
5594 | bs->print_it = print_it_noop; | |
429374b8 | 5595 | } |
876fa593 | 5596 | |
d983da9c DJ |
5597 | /* If we aren't stopping, the value of some hardware watchpoint may |
5598 | not have changed, but the intermediate memory locations we are | |
5599 | watching may have. Don't bother if we're stopping; this will get | |
5600 | done later. */ | |
d832cb68 | 5601 | need_remove_insert = 0; |
5760d0ab JK |
5602 | if (! bpstat_causes_stop (bs_head)) |
5603 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5604 | if (!bs->stop |
f431efe5 PA |
5605 | && bs->breakpoint_at |
5606 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5607 | { |
3a5c3e22 PA |
5608 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5609 | ||
5610 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5611 | need_remove_insert = 1; |
d983da9c DJ |
5612 | } |
5613 | ||
d832cb68 | 5614 | if (need_remove_insert) |
44702360 | 5615 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5616 | else if (removed_any) |
44702360 | 5617 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5618 | |
5760d0ab | 5619 | return bs_head; |
c906108c | 5620 | } |
628fe4e4 JK |
5621 | |
5622 | static void | |
5623 | handle_jit_event (void) | |
5624 | { | |
5625 | struct frame_info *frame; | |
5626 | struct gdbarch *gdbarch; | |
5627 | ||
243a9253 PA |
5628 | if (debug_infrun) |
5629 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5630 | ||
628fe4e4 JK |
5631 | /* Switch terminal for any messages produced by |
5632 | breakpoint_re_set. */ | |
223ffa71 | 5633 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5634 | |
5635 | frame = get_current_frame (); | |
5636 | gdbarch = get_frame_arch (frame); | |
5637 | ||
5638 | jit_event_handler (gdbarch); | |
5639 | ||
223ffa71 | 5640 | target_terminal::inferior (); |
628fe4e4 JK |
5641 | } |
5642 | ||
5643 | /* Prepare WHAT final decision for infrun. */ | |
5644 | ||
5645 | /* Decide what infrun needs to do with this bpstat. */ | |
5646 | ||
c906108c | 5647 | struct bpstat_what |
0e30163f | 5648 | bpstat_what (bpstat bs_head) |
c906108c | 5649 | { |
c906108c | 5650 | struct bpstat_what retval; |
0e30163f | 5651 | bpstat bs; |
c906108c | 5652 | |
628fe4e4 | 5653 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5654 | retval.call_dummy = STOP_NONE; |
186c406b | 5655 | retval.is_longjmp = 0; |
628fe4e4 | 5656 | |
0e30163f | 5657 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5658 | { |
628fe4e4 JK |
5659 | /* Extract this BS's action. After processing each BS, we check |
5660 | if its action overrides all we've seem so far. */ | |
5661 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5662 | enum bptype bptype; | |
5663 | ||
c906108c | 5664 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5665 | { |
5666 | /* I suspect this can happen if it was a momentary | |
5667 | breakpoint which has since been deleted. */ | |
5668 | bptype = bp_none; | |
5669 | } | |
20874c92 | 5670 | else |
f431efe5 | 5671 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5672 | |
5673 | switch (bptype) | |
c906108c SS |
5674 | { |
5675 | case bp_none: | |
628fe4e4 | 5676 | break; |
c906108c SS |
5677 | case bp_breakpoint: |
5678 | case bp_hardware_breakpoint: | |
7c16b83e | 5679 | case bp_single_step: |
c906108c SS |
5680 | case bp_until: |
5681 | case bp_finish: | |
a9b3a50f | 5682 | case bp_shlib_event: |
c906108c SS |
5683 | if (bs->stop) |
5684 | { | |
5685 | if (bs->print) | |
628fe4e4 | 5686 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5687 | else |
628fe4e4 | 5688 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5689 | } |
5690 | else | |
628fe4e4 | 5691 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5692 | break; |
5693 | case bp_watchpoint: | |
5694 | case bp_hardware_watchpoint: | |
5695 | case bp_read_watchpoint: | |
5696 | case bp_access_watchpoint: | |
5697 | if (bs->stop) | |
5698 | { | |
5699 | if (bs->print) | |
628fe4e4 | 5700 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5701 | else |
628fe4e4 | 5702 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5703 | } |
5704 | else | |
628fe4e4 JK |
5705 | { |
5706 | /* There was a watchpoint, but we're not stopping. | |
5707 | This requires no further action. */ | |
5708 | } | |
c906108c SS |
5709 | break; |
5710 | case bp_longjmp: | |
e2e4d78b | 5711 | case bp_longjmp_call_dummy: |
186c406b | 5712 | case bp_exception: |
0a39bb32 PA |
5713 | if (bs->stop) |
5714 | { | |
5715 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5716 | retval.is_longjmp = bptype != bp_exception; | |
5717 | } | |
5718 | else | |
5719 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5720 | break; |
5721 | case bp_longjmp_resume: | |
186c406b | 5722 | case bp_exception_resume: |
0a39bb32 PA |
5723 | if (bs->stop) |
5724 | { | |
5725 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5726 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5727 | } | |
5728 | else | |
5729 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5730 | break; |
5731 | case bp_step_resume: | |
5732 | if (bs->stop) | |
628fe4e4 JK |
5733 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5734 | else | |
c906108c | 5735 | { |
628fe4e4 JK |
5736 | /* It is for the wrong frame. */ |
5737 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5738 | } |
c906108c | 5739 | break; |
2c03e5be PA |
5740 | case bp_hp_step_resume: |
5741 | if (bs->stop) | |
5742 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5743 | else | |
5744 | { | |
5745 | /* It is for the wrong frame. */ | |
5746 | this_action = BPSTAT_WHAT_SINGLE; | |
5747 | } | |
5748 | break; | |
c906108c | 5749 | case bp_watchpoint_scope: |
c4093a6a | 5750 | case bp_thread_event: |
1900040c | 5751 | case bp_overlay_event: |
0fd8e87f | 5752 | case bp_longjmp_master: |
aa7d318d | 5753 | case bp_std_terminate_master: |
186c406b | 5754 | case bp_exception_master: |
628fe4e4 | 5755 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5756 | break; |
ce78b96d | 5757 | case bp_catchpoint: |
c5aa993b JM |
5758 | if (bs->stop) |
5759 | { | |
5760 | if (bs->print) | |
628fe4e4 | 5761 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5762 | else |
628fe4e4 | 5763 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5764 | } |
5765 | else | |
628fe4e4 JK |
5766 | { |
5767 | /* There was a catchpoint, but we're not stopping. | |
5768 | This requires no further action. */ | |
5769 | } | |
5770 | break; | |
628fe4e4 | 5771 | case bp_jit_event: |
628fe4e4 | 5772 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5773 | break; |
c906108c | 5774 | case bp_call_dummy: |
53a5351d JM |
5775 | /* Make sure the action is stop (silent or noisy), |
5776 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5777 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5778 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5779 | break; |
5780 | case bp_std_terminate: | |
5781 | /* Make sure the action is stop (silent or noisy), | |
5782 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5783 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5784 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5785 | break; |
1042e4c0 | 5786 | case bp_tracepoint: |
7a697b8d | 5787 | case bp_fast_tracepoint: |
0fb4aa4b | 5788 | case bp_static_tracepoint: |
1042e4c0 SS |
5789 | /* Tracepoint hits should not be reported back to GDB, and |
5790 | if one got through somehow, it should have been filtered | |
5791 | out already. */ | |
5792 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5793 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5794 | break; |
5795 | case bp_gnu_ifunc_resolver: | |
5796 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5797 | this_action = BPSTAT_WHAT_SINGLE; | |
5798 | break; | |
5799 | case bp_gnu_ifunc_resolver_return: | |
5800 | /* The breakpoint will be removed, execution will restart from the | |
5801 | PC of the former breakpoint. */ | |
5802 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5803 | break; | |
e7e0cddf SS |
5804 | |
5805 | case bp_dprintf: | |
a11cfd87 HZ |
5806 | if (bs->stop) |
5807 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5808 | else | |
5809 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5810 | break; |
5811 | ||
628fe4e4 JK |
5812 | default: |
5813 | internal_error (__FILE__, __LINE__, | |
5814 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5815 | } |
628fe4e4 | 5816 | |
325fac50 | 5817 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5818 | } |
628fe4e4 | 5819 | |
243a9253 PA |
5820 | return retval; |
5821 | } | |
628fe4e4 | 5822 | |
243a9253 PA |
5823 | void |
5824 | bpstat_run_callbacks (bpstat bs_head) | |
5825 | { | |
5826 | bpstat bs; | |
628fe4e4 | 5827 | |
0e30163f JK |
5828 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5829 | { | |
5830 | struct breakpoint *b = bs->breakpoint_at; | |
5831 | ||
5832 | if (b == NULL) | |
5833 | continue; | |
5834 | switch (b->type) | |
5835 | { | |
243a9253 PA |
5836 | case bp_jit_event: |
5837 | handle_jit_event (); | |
5838 | break; | |
0e30163f JK |
5839 | case bp_gnu_ifunc_resolver: |
5840 | gnu_ifunc_resolver_stop (b); | |
5841 | break; | |
5842 | case bp_gnu_ifunc_resolver_return: | |
5843 | gnu_ifunc_resolver_return_stop (b); | |
5844 | break; | |
5845 | } | |
5846 | } | |
c906108c SS |
5847 | } |
5848 | ||
5849 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5850 | without hardware support). This isn't related to a specific bpstat, | |
5851 | just to things like whether watchpoints are set. */ | |
5852 | ||
c5aa993b | 5853 | int |
fba45db2 | 5854 | bpstat_should_step (void) |
c906108c SS |
5855 | { |
5856 | struct breakpoint *b; | |
cc59ec59 | 5857 | |
c906108c | 5858 | ALL_BREAKPOINTS (b) |
717a8278 | 5859 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5860 | return 1; |
c906108c SS |
5861 | return 0; |
5862 | } | |
5863 | ||
67822962 PA |
5864 | int |
5865 | bpstat_causes_stop (bpstat bs) | |
5866 | { | |
5867 | for (; bs != NULL; bs = bs->next) | |
5868 | if (bs->stop) | |
5869 | return 1; | |
5870 | ||
5871 | return 0; | |
5872 | } | |
5873 | ||
c906108c | 5874 | \f |
c5aa993b | 5875 | |
170b53b2 UW |
5876 | /* Compute a string of spaces suitable to indent the next line |
5877 | so it starts at the position corresponding to the table column | |
5878 | named COL_NAME in the currently active table of UIOUT. */ | |
5879 | ||
5880 | static char * | |
5881 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5882 | { | |
5883 | static char wrap_indent[80]; | |
5884 | int i, total_width, width, align; | |
c5209615 | 5885 | const char *text; |
170b53b2 UW |
5886 | |
5887 | total_width = 0; | |
112e8700 | 5888 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5889 | { |
5890 | if (strcmp (text, col_name) == 0) | |
5891 | { | |
5892 | gdb_assert (total_width < sizeof wrap_indent); | |
5893 | memset (wrap_indent, ' ', total_width); | |
5894 | wrap_indent[total_width] = 0; | |
5895 | ||
5896 | return wrap_indent; | |
5897 | } | |
5898 | ||
5899 | total_width += width + 1; | |
5900 | } | |
5901 | ||
5902 | return NULL; | |
5903 | } | |
5904 | ||
b775012e LM |
5905 | /* Determine if the locations of this breakpoint will have their conditions |
5906 | evaluated by the target, host or a mix of both. Returns the following: | |
5907 | ||
5908 | "host": Host evals condition. | |
5909 | "host or target": Host or Target evals condition. | |
5910 | "target": Target evals condition. | |
5911 | */ | |
5912 | ||
5913 | static const char * | |
5914 | bp_condition_evaluator (struct breakpoint *b) | |
5915 | { | |
5916 | struct bp_location *bl; | |
5917 | char host_evals = 0; | |
5918 | char target_evals = 0; | |
5919 | ||
5920 | if (!b) | |
5921 | return NULL; | |
5922 | ||
5923 | if (!is_breakpoint (b)) | |
5924 | return NULL; | |
5925 | ||
5926 | if (gdb_evaluates_breakpoint_condition_p () | |
5927 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5928 | return condition_evaluation_host; | |
5929 | ||
5930 | for (bl = b->loc; bl; bl = bl->next) | |
5931 | { | |
5932 | if (bl->cond_bytecode) | |
5933 | target_evals++; | |
5934 | else | |
5935 | host_evals++; | |
5936 | } | |
5937 | ||
5938 | if (host_evals && target_evals) | |
5939 | return condition_evaluation_both; | |
5940 | else if (target_evals) | |
5941 | return condition_evaluation_target; | |
5942 | else | |
5943 | return condition_evaluation_host; | |
5944 | } | |
5945 | ||
5946 | /* Determine the breakpoint location's condition evaluator. This is | |
5947 | similar to bp_condition_evaluator, but for locations. */ | |
5948 | ||
5949 | static const char * | |
5950 | bp_location_condition_evaluator (struct bp_location *bl) | |
5951 | { | |
5952 | if (bl && !is_breakpoint (bl->owner)) | |
5953 | return NULL; | |
5954 | ||
5955 | if (gdb_evaluates_breakpoint_condition_p () | |
5956 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5957 | return condition_evaluation_host; | |
5958 | ||
5959 | if (bl && bl->cond_bytecode) | |
5960 | return condition_evaluation_target; | |
5961 | else | |
5962 | return condition_evaluation_host; | |
5963 | } | |
5964 | ||
859825b8 JK |
5965 | /* Print the LOC location out of the list of B->LOC locations. */ |
5966 | ||
170b53b2 UW |
5967 | static void |
5968 | print_breakpoint_location (struct breakpoint *b, | |
5969 | struct bp_location *loc) | |
0d381245 | 5970 | { |
79a45e25 | 5971 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5972 | |
5973 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5974 | |
859825b8 JK |
5975 | if (loc != NULL && loc->shlib_disabled) |
5976 | loc = NULL; | |
5977 | ||
6c95b8df PA |
5978 | if (loc != NULL) |
5979 | set_current_program_space (loc->pspace); | |
5980 | ||
56435ebe | 5981 | if (b->display_canonical) |
d28cd78a | 5982 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5983 | else if (loc && loc->symtab) |
0d381245 VP |
5984 | { |
5985 | struct symbol *sym | |
5986 | = find_pc_sect_function (loc->address, loc->section); | |
5987 | if (sym) | |
5988 | { | |
112e8700 SM |
5989 | uiout->text ("in "); |
5990 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); | |
5991 | uiout->text (" "); | |
5992 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5993 | uiout->text ("at "); | |
0d381245 | 5994 | } |
112e8700 | 5995 | uiout->field_string ("file", |
05cba821 | 5996 | symtab_to_filename_for_display (loc->symtab)); |
112e8700 | 5997 | uiout->text (":"); |
05cba821 | 5998 | |
112e8700 SM |
5999 | if (uiout->is_mi_like_p ()) |
6000 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 6001 | |
112e8700 | 6002 | uiout->field_int ("line", loc->line_number); |
0d381245 | 6003 | } |
859825b8 | 6004 | else if (loc) |
0d381245 | 6005 | { |
d7e74731 | 6006 | string_file stb; |
170b53b2 | 6007 | |
d7e74731 | 6008 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 6009 | demangle, ""); |
112e8700 | 6010 | uiout->field_stream ("at", stb); |
0d381245 | 6011 | } |
859825b8 | 6012 | else |
f00aae0f | 6013 | { |
d28cd78a TT |
6014 | uiout->field_string ("pending", |
6015 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
6016 | /* If extra_string is available, it could be holding a condition |
6017 | or dprintf arguments. In either case, make sure it is printed, | |
6018 | too, but only for non-MI streams. */ | |
112e8700 | 6019 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
6020 | { |
6021 | if (b->type == bp_dprintf) | |
112e8700 | 6022 | uiout->text (","); |
f00aae0f | 6023 | else |
112e8700 SM |
6024 | uiout->text (" "); |
6025 | uiout->text (b->extra_string); | |
f00aae0f KS |
6026 | } |
6027 | } | |
6c95b8df | 6028 | |
b775012e LM |
6029 | if (loc && is_breakpoint (b) |
6030 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6031 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6032 | { | |
112e8700 SM |
6033 | uiout->text (" ("); |
6034 | uiout->field_string ("evaluated-by", | |
b775012e | 6035 | bp_location_condition_evaluator (loc)); |
112e8700 | 6036 | uiout->text (")"); |
b775012e | 6037 | } |
0d381245 VP |
6038 | } |
6039 | ||
269b11a2 PA |
6040 | static const char * |
6041 | bptype_string (enum bptype type) | |
c906108c | 6042 | { |
c4093a6a JM |
6043 | struct ep_type_description |
6044 | { | |
6045 | enum bptype type; | |
a121b7c1 | 6046 | const char *description; |
c4093a6a JM |
6047 | }; |
6048 | static struct ep_type_description bptypes[] = | |
c906108c | 6049 | { |
c5aa993b JM |
6050 | {bp_none, "?deleted?"}, |
6051 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6052 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 6053 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
6054 | {bp_until, "until"}, |
6055 | {bp_finish, "finish"}, | |
6056 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6057 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6058 | {bp_read_watchpoint, "read watchpoint"}, |
6059 | {bp_access_watchpoint, "acc watchpoint"}, | |
6060 | {bp_longjmp, "longjmp"}, | |
6061 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6062 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6063 | {bp_exception, "exception"}, |
6064 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6065 | {bp_step_resume, "step resume"}, |
2c03e5be | 6066 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6067 | {bp_watchpoint_scope, "watchpoint scope"}, |
6068 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6069 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6070 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6071 | {bp_thread_event, "thread events"}, |
1900040c | 6072 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6073 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6074 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6075 | {bp_exception_master, "exception master"}, |
ce78b96d | 6076 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6077 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6078 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6079 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6080 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6081 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6082 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6083 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6084 | }; |
269b11a2 PA |
6085 | |
6086 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6087 | || ((int) type != bptypes[(int) type].type)) | |
6088 | internal_error (__FILE__, __LINE__, | |
6089 | _("bptypes table does not describe type #%d."), | |
6090 | (int) type); | |
6091 | ||
6092 | return bptypes[(int) type].description; | |
6093 | } | |
6094 | ||
998580f1 MK |
6095 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6096 | For CLI, prefix the list with the string 'inf'. */ | |
6097 | ||
6098 | static void | |
6099 | output_thread_groups (struct ui_out *uiout, | |
6100 | const char *field_name, | |
6101 | VEC(int) *inf_num, | |
6102 | int mi_only) | |
6103 | { | |
112e8700 | 6104 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6105 | int inf; |
6106 | int i; | |
6107 | ||
6108 | /* For backward compatibility, don't display inferiors in CLI unless | |
6109 | there are several. Always display them for MI. */ | |
6110 | if (!is_mi && mi_only) | |
6111 | return; | |
6112 | ||
10f489e5 | 6113 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6114 | |
998580f1 MK |
6115 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6116 | { | |
6117 | if (is_mi) | |
6118 | { | |
6119 | char mi_group[10]; | |
6120 | ||
6121 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
112e8700 | 6122 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6123 | } |
6124 | else | |
6125 | { | |
6126 | if (i == 0) | |
112e8700 | 6127 | uiout->text (" inf "); |
998580f1 | 6128 | else |
112e8700 | 6129 | uiout->text (", "); |
998580f1 | 6130 | |
112e8700 | 6131 | uiout->text (plongest (inf)); |
998580f1 MK |
6132 | } |
6133 | } | |
998580f1 MK |
6134 | } |
6135 | ||
269b11a2 PA |
6136 | /* Print B to gdb_stdout. */ |
6137 | ||
6138 | static void | |
6139 | print_one_breakpoint_location (struct breakpoint *b, | |
6140 | struct bp_location *loc, | |
6141 | int loc_number, | |
6142 | struct bp_location **last_loc, | |
269b11a2 PA |
6143 | int allflag) |
6144 | { | |
6145 | struct command_line *l; | |
c2c6d25f | 6146 | static char bpenables[] = "nynny"; |
c906108c | 6147 | |
79a45e25 | 6148 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6149 | int header_of_multiple = 0; |
6150 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6151 | struct value_print_options opts; |
6152 | ||
6153 | get_user_print_options (&opts); | |
0d381245 VP |
6154 | |
6155 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6156 | /* See comment in print_one_breakpoint concerning treatment of |
6157 | breakpoints with single disabled location. */ | |
0d381245 VP |
6158 | if (loc == NULL |
6159 | && (b->loc != NULL | |
6160 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6161 | header_of_multiple = 1; | |
6162 | if (loc == NULL) | |
6163 | loc = b->loc; | |
6164 | ||
c4093a6a JM |
6165 | annotate_record (); |
6166 | ||
6167 | /* 1 */ | |
6168 | annotate_field (0); | |
0d381245 VP |
6169 | if (part_of_multiple) |
6170 | { | |
6171 | char *formatted; | |
0c6773c1 | 6172 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
112e8700 | 6173 | uiout->field_string ("number", formatted); |
0d381245 VP |
6174 | xfree (formatted); |
6175 | } | |
6176 | else | |
6177 | { | |
112e8700 | 6178 | uiout->field_int ("number", b->number); |
0d381245 | 6179 | } |
c4093a6a JM |
6180 | |
6181 | /* 2 */ | |
6182 | annotate_field (1); | |
0d381245 | 6183 | if (part_of_multiple) |
112e8700 | 6184 | uiout->field_skip ("type"); |
269b11a2 | 6185 | else |
112e8700 | 6186 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6187 | |
6188 | /* 3 */ | |
6189 | annotate_field (2); | |
0d381245 | 6190 | if (part_of_multiple) |
112e8700 | 6191 | uiout->field_skip ("disp"); |
0d381245 | 6192 | else |
112e8700 | 6193 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6194 | |
c4093a6a JM |
6195 | |
6196 | /* 4 */ | |
6197 | annotate_field (3); | |
0d381245 | 6198 | if (part_of_multiple) |
112e8700 | 6199 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6200 | else |
112e8700 SM |
6201 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
6202 | uiout->spaces (2); | |
0d381245 | 6203 | |
c4093a6a JM |
6204 | |
6205 | /* 5 and 6 */ | |
3086aeae | 6206 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6207 | { |
4a64f543 MS |
6208 | /* Although the print_one can possibly print all locations, |
6209 | calling it here is not likely to get any nice result. So, | |
6210 | make sure there's just one location. */ | |
0d381245 | 6211 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6212 | b->ops->print_one (b, last_loc); |
0d381245 | 6213 | } |
3086aeae DJ |
6214 | else |
6215 | switch (b->type) | |
6216 | { | |
6217 | case bp_none: | |
6218 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6219 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6220 | break; |
c906108c | 6221 | |
3086aeae DJ |
6222 | case bp_watchpoint: |
6223 | case bp_hardware_watchpoint: | |
6224 | case bp_read_watchpoint: | |
6225 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6226 | { |
6227 | struct watchpoint *w = (struct watchpoint *) b; | |
6228 | ||
6229 | /* Field 4, the address, is omitted (which makes the columns | |
6230 | not line up too nicely with the headers, but the effect | |
6231 | is relatively readable). */ | |
6232 | if (opts.addressprint) | |
112e8700 | 6233 | uiout->field_skip ("addr"); |
3a5c3e22 | 6234 | annotate_field (5); |
112e8700 | 6235 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6236 | } |
3086aeae DJ |
6237 | break; |
6238 | ||
3086aeae DJ |
6239 | case bp_breakpoint: |
6240 | case bp_hardware_breakpoint: | |
7c16b83e | 6241 | case bp_single_step: |
3086aeae DJ |
6242 | case bp_until: |
6243 | case bp_finish: | |
6244 | case bp_longjmp: | |
6245 | case bp_longjmp_resume: | |
e2e4d78b | 6246 | case bp_longjmp_call_dummy: |
186c406b TT |
6247 | case bp_exception: |
6248 | case bp_exception_resume: | |
3086aeae | 6249 | case bp_step_resume: |
2c03e5be | 6250 | case bp_hp_step_resume: |
3086aeae DJ |
6251 | case bp_watchpoint_scope: |
6252 | case bp_call_dummy: | |
aa7d318d | 6253 | case bp_std_terminate: |
3086aeae DJ |
6254 | case bp_shlib_event: |
6255 | case bp_thread_event: | |
6256 | case bp_overlay_event: | |
0fd8e87f | 6257 | case bp_longjmp_master: |
aa7d318d | 6258 | case bp_std_terminate_master: |
186c406b | 6259 | case bp_exception_master: |
1042e4c0 | 6260 | case bp_tracepoint: |
7a697b8d | 6261 | case bp_fast_tracepoint: |
0fb4aa4b | 6262 | case bp_static_tracepoint: |
e7e0cddf | 6263 | case bp_dprintf: |
4efc6507 | 6264 | case bp_jit_event: |
0e30163f JK |
6265 | case bp_gnu_ifunc_resolver: |
6266 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6267 | if (opts.addressprint) |
3086aeae DJ |
6268 | { |
6269 | annotate_field (4); | |
54e52265 | 6270 | if (header_of_multiple) |
112e8700 | 6271 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6272 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6273 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6274 | else |
112e8700 | 6275 | uiout->field_core_addr ("addr", |
5af949e3 | 6276 | loc->gdbarch, loc->address); |
3086aeae DJ |
6277 | } |
6278 | annotate_field (5); | |
0d381245 | 6279 | if (!header_of_multiple) |
170b53b2 | 6280 | print_breakpoint_location (b, loc); |
0d381245 | 6281 | if (b->loc) |
a6d9a66e | 6282 | *last_loc = b->loc; |
3086aeae DJ |
6283 | break; |
6284 | } | |
c906108c | 6285 | |
6c95b8df | 6286 | |
998580f1 | 6287 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6288 | { |
6289 | struct inferior *inf; | |
998580f1 MK |
6290 | VEC(int) *inf_num = NULL; |
6291 | int mi_only = 1; | |
6c95b8df | 6292 | |
998580f1 | 6293 | ALL_INFERIORS (inf) |
6c95b8df PA |
6294 | { |
6295 | if (inf->pspace == loc->pspace) | |
998580f1 | 6296 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6297 | } |
998580f1 MK |
6298 | |
6299 | /* For backward compatibility, don't display inferiors in CLI unless | |
6300 | there are several. Always display for MI. */ | |
6301 | if (allflag | |
6302 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6303 | && (number_of_program_spaces () > 1 | |
6304 | || number_of_inferiors () > 1) | |
6305 | /* LOC is for existing B, it cannot be in | |
6306 | moribund_locations and thus having NULL OWNER. */ | |
6307 | && loc->owner->type != bp_catchpoint)) | |
6308 | mi_only = 0; | |
6309 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6310 | VEC_free (int, inf_num); | |
6c95b8df PA |
6311 | } |
6312 | ||
4a306c9a | 6313 | if (!part_of_multiple) |
c4093a6a | 6314 | { |
4a306c9a JB |
6315 | if (b->thread != -1) |
6316 | { | |
6317 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6318 | "stop only in" line a little further down. */ |
112e8700 SM |
6319 | uiout->text (" thread "); |
6320 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6321 | } |
6322 | else if (b->task != 0) | |
6323 | { | |
112e8700 SM |
6324 | uiout->text (" task "); |
6325 | uiout->field_int ("task", b->task); | |
4a306c9a | 6326 | } |
c4093a6a | 6327 | } |
f1310107 | 6328 | |
112e8700 | 6329 | uiout->text ("\n"); |
f1310107 | 6330 | |
348d480f | 6331 | if (!part_of_multiple) |
f1310107 TJB |
6332 | b->ops->print_one_detail (b, uiout); |
6333 | ||
0d381245 | 6334 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6335 | { |
6336 | annotate_field (6); | |
112e8700 | 6337 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6338 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6339 | the frame ID. */ |
112e8700 | 6340 | uiout->field_core_addr ("frame", |
5af949e3 | 6341 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6342 | uiout->text ("\n"); |
c4093a6a JM |
6343 | } |
6344 | ||
28010a5d | 6345 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6346 | { |
6347 | annotate_field (7); | |
d77f58be | 6348 | if (is_tracepoint (b)) |
112e8700 | 6349 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6350 | else |
112e8700 SM |
6351 | uiout->text ("\tstop only if "); |
6352 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6353 | |
6354 | /* Print whether the target is doing the breakpoint's condition | |
6355 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6356 | if (is_breakpoint (b) | |
6357 | && breakpoint_condition_evaluation_mode () | |
6358 | == condition_evaluation_target) | |
6359 | { | |
112e8700 SM |
6360 | uiout->text (" ("); |
6361 | uiout->field_string ("evaluated-by", | |
b775012e | 6362 | bp_condition_evaluator (b)); |
112e8700 | 6363 | uiout->text (" evals)"); |
b775012e | 6364 | } |
112e8700 | 6365 | uiout->text ("\n"); |
0101ce28 JJ |
6366 | } |
6367 | ||
0d381245 | 6368 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6369 | { |
4a64f543 | 6370 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6371 | uiout->text ("\tstop only in thread "); |
6372 | if (uiout->is_mi_like_p ()) | |
6373 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6374 | else |
6375 | { | |
6376 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6377 | ||
112e8700 | 6378 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6379 | } |
112e8700 | 6380 | uiout->text ("\n"); |
c4093a6a JM |
6381 | } |
6382 | ||
556ec64d YQ |
6383 | if (!part_of_multiple) |
6384 | { | |
6385 | if (b->hit_count) | |
31f56a27 YQ |
6386 | { |
6387 | /* FIXME should make an annotation for this. */ | |
6388 | if (is_catchpoint (b)) | |
112e8700 | 6389 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6390 | else if (is_tracepoint (b)) |
112e8700 | 6391 | uiout->text ("\ttracepoint"); |
31f56a27 | 6392 | else |
112e8700 SM |
6393 | uiout->text ("\tbreakpoint"); |
6394 | uiout->text (" already hit "); | |
6395 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6396 | if (b->hit_count == 1) |
112e8700 | 6397 | uiout->text (" time\n"); |
31f56a27 | 6398 | else |
112e8700 | 6399 | uiout->text (" times\n"); |
31f56a27 | 6400 | } |
556ec64d YQ |
6401 | else |
6402 | { | |
31f56a27 | 6403 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6404 | if (uiout->is_mi_like_p ()) |
6405 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6406 | } |
6407 | } | |
8b93c638 | 6408 | |
0d381245 | 6409 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6410 | { |
6411 | annotate_field (8); | |
112e8700 SM |
6412 | uiout->text ("\tignore next "); |
6413 | uiout->field_int ("ignore", b->ignore_count); | |
6414 | uiout->text (" hits\n"); | |
c4093a6a | 6415 | } |
059fb39f | 6416 | |
816338b5 SS |
6417 | /* Note that an enable count of 1 corresponds to "enable once" |
6418 | behavior, which is reported by the combination of enablement and | |
6419 | disposition, so we don't need to mention it here. */ | |
6420 | if (!part_of_multiple && b->enable_count > 1) | |
6421 | { | |
6422 | annotate_field (8); | |
112e8700 | 6423 | uiout->text ("\tdisable after "); |
816338b5 SS |
6424 | /* Tweak the wording to clarify that ignore and enable counts |
6425 | are distinct, and have additive effect. */ | |
6426 | if (b->ignore_count) | |
112e8700 | 6427 | uiout->text ("additional "); |
816338b5 | 6428 | else |
112e8700 SM |
6429 | uiout->text ("next "); |
6430 | uiout->field_int ("enable", b->enable_count); | |
6431 | uiout->text (" hits\n"); | |
816338b5 SS |
6432 | } |
6433 | ||
f196051f SS |
6434 | if (!part_of_multiple && is_tracepoint (b)) |
6435 | { | |
6436 | struct tracepoint *tp = (struct tracepoint *) b; | |
6437 | ||
6438 | if (tp->traceframe_usage) | |
6439 | { | |
112e8700 SM |
6440 | uiout->text ("\ttrace buffer usage "); |
6441 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6442 | uiout->text (" bytes\n"); | |
f196051f SS |
6443 | } |
6444 | } | |
d3ce09f5 | 6445 | |
d1b0a7bf | 6446 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6447 | if (!part_of_multiple && l) |
c4093a6a JM |
6448 | { |
6449 | annotate_field (9); | |
2e783024 | 6450 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6451 | print_command_lines (uiout, l, 4); |
c4093a6a | 6452 | } |
d24317b4 | 6453 | |
d9b3f62e | 6454 | if (is_tracepoint (b)) |
1042e4c0 | 6455 | { |
d9b3f62e PA |
6456 | struct tracepoint *t = (struct tracepoint *) b; |
6457 | ||
6458 | if (!part_of_multiple && t->pass_count) | |
6459 | { | |
6460 | annotate_field (10); | |
112e8700 SM |
6461 | uiout->text ("\tpass count "); |
6462 | uiout->field_int ("pass", t->pass_count); | |
6463 | uiout->text (" \n"); | |
d9b3f62e | 6464 | } |
f2a8bc8a YQ |
6465 | |
6466 | /* Don't display it when tracepoint or tracepoint location is | |
6467 | pending. */ | |
6468 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6469 | { | |
6470 | annotate_field (11); | |
6471 | ||
112e8700 SM |
6472 | if (uiout->is_mi_like_p ()) |
6473 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6474 | loc->inserted ? "y" : "n"); |
6475 | else | |
6476 | { | |
6477 | if (loc->inserted) | |
112e8700 | 6478 | uiout->text ("\t"); |
f2a8bc8a | 6479 | else |
112e8700 SM |
6480 | uiout->text ("\tnot "); |
6481 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6482 | } |
6483 | } | |
1042e4c0 SS |
6484 | } |
6485 | ||
112e8700 | 6486 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6487 | { |
3a5c3e22 PA |
6488 | if (is_watchpoint (b)) |
6489 | { | |
6490 | struct watchpoint *w = (struct watchpoint *) b; | |
6491 | ||
112e8700 | 6492 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6493 | } |
f00aae0f | 6494 | else if (b->location != NULL |
d28cd78a | 6495 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6496 | uiout->field_string ("original-location", |
d28cd78a | 6497 | event_location_to_string (b->location.get ())); |
d24317b4 | 6498 | } |
c4093a6a | 6499 | } |
c5aa993b | 6500 | |
0d381245 VP |
6501 | static void |
6502 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6503 | struct bp_location **last_loc, |
6c95b8df | 6504 | int allflag) |
0d381245 | 6505 | { |
79a45e25 | 6506 | struct ui_out *uiout = current_uiout; |
8d3788bd | 6507 | |
2e783024 TT |
6508 | { |
6509 | ui_out_emit_tuple tuple_emitter (uiout, "bkpt"); | |
8d3788bd | 6510 | |
2e783024 TT |
6511 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
6512 | } | |
0d381245 VP |
6513 | |
6514 | /* If this breakpoint has custom print function, | |
6515 | it's already printed. Otherwise, print individual | |
6516 | locations, if any. */ | |
6517 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6518 | { | |
4a64f543 MS |
6519 | /* If breakpoint has a single location that is disabled, we |
6520 | print it as if it had several locations, since otherwise it's | |
6521 | hard to represent "breakpoint enabled, location disabled" | |
6522 | situation. | |
6523 | ||
6524 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6525 | internally, that's not a property exposed to user. */ |
0d381245 | 6526 | if (b->loc |
a5606eee | 6527 | && !is_hardware_watchpoint (b) |
8d3788bd | 6528 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6529 | { |
6530 | struct bp_location *loc; | |
6531 | int n = 1; | |
8d3788bd | 6532 | |
0d381245 | 6533 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd | 6534 | { |
2e783024 | 6535 | ui_out_emit_tuple tuple_emitter (uiout, NULL); |
8d3788bd | 6536 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6537 | } |
0d381245 VP |
6538 | } |
6539 | } | |
6540 | } | |
6541 | ||
a6d9a66e UW |
6542 | static int |
6543 | breakpoint_address_bits (struct breakpoint *b) | |
6544 | { | |
6545 | int print_address_bits = 0; | |
6546 | struct bp_location *loc; | |
6547 | ||
c6d81124 PA |
6548 | /* Software watchpoints that aren't watching memory don't have an |
6549 | address to print. */ | |
6550 | if (is_no_memory_software_watchpoint (b)) | |
6551 | return 0; | |
6552 | ||
a6d9a66e UW |
6553 | for (loc = b->loc; loc; loc = loc->next) |
6554 | { | |
c7437ca6 PA |
6555 | int addr_bit; |
6556 | ||
c7437ca6 | 6557 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6558 | if (addr_bit > print_address_bits) |
6559 | print_address_bits = addr_bit; | |
6560 | } | |
6561 | ||
6562 | return print_address_bits; | |
6563 | } | |
0d381245 | 6564 | |
65630365 | 6565 | /* See breakpoint.h. */ |
c5aa993b | 6566 | |
65630365 PA |
6567 | void |
6568 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6569 | { |
a6d9a66e | 6570 | struct bp_location *dummy_loc = NULL; |
65630365 | 6571 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6572 | } |
c5aa993b | 6573 | |
09d682a4 TT |
6574 | /* Return true if this breakpoint was set by the user, false if it is |
6575 | internal or momentary. */ | |
6576 | ||
6577 | int | |
6578 | user_breakpoint_p (struct breakpoint *b) | |
6579 | { | |
46c6471b | 6580 | return b->number > 0; |
09d682a4 TT |
6581 | } |
6582 | ||
93daf339 TT |
6583 | /* See breakpoint.h. */ |
6584 | ||
6585 | int | |
6586 | pending_breakpoint_p (struct breakpoint *b) | |
6587 | { | |
6588 | return b->loc == NULL; | |
6589 | } | |
6590 | ||
7f3b0473 | 6591 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6592 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6593 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6594 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6595 | ones for which it returns non-zero. Return the total number of | |
6596 | breakpoints listed. */ | |
c906108c | 6597 | |
d77f58be | 6598 | static int |
4495129a | 6599 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6600 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6601 | { |
52f0bd74 | 6602 | struct breakpoint *b; |
a6d9a66e | 6603 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6604 | int nr_printable_breakpoints; |
79a45b7d | 6605 | struct value_print_options opts; |
a6d9a66e | 6606 | int print_address_bits = 0; |
269b11a2 | 6607 | int print_type_col_width = 14; |
79a45e25 | 6608 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6609 | |
79a45b7d TT |
6610 | get_user_print_options (&opts); |
6611 | ||
4a64f543 MS |
6612 | /* Compute the number of rows in the table, as well as the size |
6613 | required for address fields. */ | |
7f3b0473 AC |
6614 | nr_printable_breakpoints = 0; |
6615 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6616 | { |
6617 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6618 | if (filter && !filter (b)) | |
6619 | continue; | |
6620 | ||
6621 | /* If we have an "args" string, it is a list of breakpoints to | |
6622 | accept. Skip the others. */ | |
6623 | if (args != NULL && *args != '\0') | |
6624 | { | |
6625 | if (allflag && parse_and_eval_long (args) != b->number) | |
6626 | continue; | |
6627 | if (!allflag && !number_is_in_list (args, b->number)) | |
6628 | continue; | |
6629 | } | |
269b11a2 | 6630 | |
e5a67952 MS |
6631 | if (allflag || user_breakpoint_p (b)) |
6632 | { | |
6633 | int addr_bit, type_len; | |
a6d9a66e | 6634 | |
e5a67952 MS |
6635 | addr_bit = breakpoint_address_bits (b); |
6636 | if (addr_bit > print_address_bits) | |
6637 | print_address_bits = addr_bit; | |
269b11a2 | 6638 | |
e5a67952 MS |
6639 | type_len = strlen (bptype_string (b->type)); |
6640 | if (type_len > print_type_col_width) | |
6641 | print_type_col_width = type_len; | |
6642 | ||
6643 | nr_printable_breakpoints++; | |
6644 | } | |
6645 | } | |
7f3b0473 | 6646 | |
4a2b031d TT |
6647 | { |
6648 | ui_out_emit_table table_emitter (uiout, | |
6649 | opts.addressprint ? 6 : 5, | |
6650 | nr_printable_breakpoints, | |
6651 | "BreakpointTable"); | |
6652 | ||
6653 | if (nr_printable_breakpoints > 0) | |
6654 | annotate_breakpoints_headers (); | |
6655 | if (nr_printable_breakpoints > 0) | |
6656 | annotate_field (0); | |
6657 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6658 | if (nr_printable_breakpoints > 0) | |
6659 | annotate_field (1); | |
6660 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6661 | if (nr_printable_breakpoints > 0) | |
6662 | annotate_field (2); | |
6663 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6664 | if (nr_printable_breakpoints > 0) | |
6665 | annotate_field (3); | |
6666 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6667 | if (opts.addressprint) | |
6668 | { | |
6669 | if (nr_printable_breakpoints > 0) | |
6670 | annotate_field (4); | |
6671 | if (print_address_bits <= 32) | |
6672 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6673 | else | |
6674 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6675 | } | |
6676 | if (nr_printable_breakpoints > 0) | |
6677 | annotate_field (5); | |
6678 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6679 | uiout->table_body (); | |
6680 | if (nr_printable_breakpoints > 0) | |
6681 | annotate_breakpoints_table (); | |
6682 | ||
6683 | ALL_BREAKPOINTS (b) | |
6684 | { | |
6685 | QUIT; | |
6686 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6687 | if (filter && !filter (b)) | |
6688 | continue; | |
e5a67952 | 6689 | |
4a2b031d TT |
6690 | /* If we have an "args" string, it is a list of breakpoints to |
6691 | accept. Skip the others. */ | |
e5a67952 | 6692 | |
4a2b031d TT |
6693 | if (args != NULL && *args != '\0') |
6694 | { | |
6695 | if (allflag) /* maintenance info breakpoint */ | |
6696 | { | |
6697 | if (parse_and_eval_long (args) != b->number) | |
6698 | continue; | |
6699 | } | |
6700 | else /* all others */ | |
6701 | { | |
6702 | if (!number_is_in_list (args, b->number)) | |
6703 | continue; | |
6704 | } | |
6705 | } | |
6706 | /* We only print out user settable breakpoints unless the | |
6707 | allflag is set. */ | |
6708 | if (allflag || user_breakpoint_p (b)) | |
6709 | print_one_breakpoint (b, &last_loc, allflag); | |
6710 | } | |
6711 | } | |
698384cd | 6712 | |
7f3b0473 | 6713 | if (nr_printable_breakpoints == 0) |
c906108c | 6714 | { |
4a64f543 MS |
6715 | /* If there's a filter, let the caller decide how to report |
6716 | empty list. */ | |
d77f58be SS |
6717 | if (!filter) |
6718 | { | |
e5a67952 | 6719 | if (args == NULL || *args == '\0') |
112e8700 | 6720 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6721 | else |
112e8700 | 6722 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6723 | args); |
d77f58be | 6724 | } |
c906108c SS |
6725 | } |
6726 | else | |
c4093a6a | 6727 | { |
a6d9a66e UW |
6728 | if (last_loc && !server_command) |
6729 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6730 | } |
c906108c | 6731 | |
4a64f543 | 6732 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6733 | there have been breakpoints? */ |
c906108c | 6734 | annotate_breakpoints_table_end (); |
d77f58be SS |
6735 | |
6736 | return nr_printable_breakpoints; | |
c906108c SS |
6737 | } |
6738 | ||
ad443146 SS |
6739 | /* Display the value of default-collect in a way that is generally |
6740 | compatible with the breakpoint list. */ | |
6741 | ||
6742 | static void | |
6743 | default_collect_info (void) | |
6744 | { | |
79a45e25 PA |
6745 | struct ui_out *uiout = current_uiout; |
6746 | ||
ad443146 SS |
6747 | /* If it has no value (which is frequently the case), say nothing; a |
6748 | message like "No default-collect." gets in user's face when it's | |
6749 | not wanted. */ | |
6750 | if (!*default_collect) | |
6751 | return; | |
6752 | ||
6753 | /* The following phrase lines up nicely with per-tracepoint collect | |
6754 | actions. */ | |
112e8700 SM |
6755 | uiout->text ("default collect "); |
6756 | uiout->field_string ("default-collect", default_collect); | |
6757 | uiout->text (" \n"); | |
ad443146 SS |
6758 | } |
6759 | ||
c906108c | 6760 | static void |
11db9430 | 6761 | info_breakpoints_command (char *args, int from_tty) |
c906108c | 6762 | { |
e5a67952 | 6763 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6764 | |
6765 | default_collect_info (); | |
d77f58be SS |
6766 | } |
6767 | ||
6768 | static void | |
11db9430 | 6769 | info_watchpoints_command (char *args, int from_tty) |
d77f58be | 6770 | { |
e5a67952 | 6771 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6772 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6773 | |
6774 | if (num_printed == 0) | |
6775 | { | |
e5a67952 | 6776 | if (args == NULL || *args == '\0') |
112e8700 | 6777 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6778 | else |
112e8700 | 6779 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6780 | } |
c906108c SS |
6781 | } |
6782 | ||
7a292a7a | 6783 | static void |
4495129a | 6784 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6785 | { |
e5a67952 | 6786 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6787 | |
6788 | default_collect_info (); | |
c906108c SS |
6789 | } |
6790 | ||
0d381245 | 6791 | static int |
714835d5 | 6792 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6793 | struct program_space *pspace, |
714835d5 | 6794 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6795 | { |
6796 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6797 | |
0d381245 VP |
6798 | for (; bl; bl = bl->next) |
6799 | { | |
6c95b8df PA |
6800 | if (bl->pspace == pspace |
6801 | && bl->address == pc | |
0d381245 VP |
6802 | && (!overlay_debugging || bl->section == section)) |
6803 | return 1; | |
6804 | } | |
6805 | return 0; | |
6806 | } | |
6807 | ||
672f9b60 | 6808 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6809 | concerns with logical breakpoints, so we match program spaces, not |
6810 | address spaces. */ | |
c906108c SS |
6811 | |
6812 | static void | |
6c95b8df PA |
6813 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6814 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6815 | struct obj_section *section, int thread) |
c906108c | 6816 | { |
52f0bd74 AC |
6817 | int others = 0; |
6818 | struct breakpoint *b; | |
c906108c SS |
6819 | |
6820 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6821 | others += (user_breakpoint_p (b) |
6822 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6823 | if (others > 0) |
6824 | { | |
a3f17187 AC |
6825 | if (others == 1) |
6826 | printf_filtered (_("Note: breakpoint ")); | |
6827 | else /* if (others == ???) */ | |
6828 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6829 | ALL_BREAKPOINTS (b) |
672f9b60 | 6830 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6831 | { |
6832 | others--; | |
6833 | printf_filtered ("%d", b->number); | |
6834 | if (b->thread == -1 && thread != -1) | |
6835 | printf_filtered (" (all threads)"); | |
6836 | else if (b->thread != -1) | |
6837 | printf_filtered (" (thread %d)", b->thread); | |
6838 | printf_filtered ("%s%s ", | |
059fb39f | 6839 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6840 | || b->enable_state == bp_call_disabled) |
0d381245 | 6841 | ? " (disabled)" |
0d381245 VP |
6842 | : ""), |
6843 | (others > 1) ? "," | |
6844 | : ((others == 1) ? " and" : "")); | |
6845 | } | |
a3f17187 | 6846 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6847 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6848 | printf_filtered (".\n"); |
6849 | } | |
6850 | } | |
6851 | \f | |
c906108c | 6852 | |
e4f237da | 6853 | /* Return true iff it is meaningful to use the address member of |
244558af LM |
6854 | BPT locations. For some breakpoint types, the locations' address members |
6855 | are irrelevant and it makes no sense to attempt to compare them to other | |
6856 | addresses (or use them for any other purpose either). | |
e4f237da | 6857 | |
4a64f543 | 6858 | More specifically, each of the following breakpoint types will |
244558af | 6859 | always have a zero valued location address and we don't want to mark |
4a64f543 | 6860 | breakpoints of any of these types to be a duplicate of an actual |
244558af | 6861 | breakpoint location at address zero: |
e4f237da KB |
6862 | |
6863 | bp_watchpoint | |
2d134ed3 PA |
6864 | bp_catchpoint |
6865 | ||
6866 | */ | |
e4f237da KB |
6867 | |
6868 | static int | |
6869 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6870 | { | |
6871 | enum bptype type = bpt->type; | |
6872 | ||
2d134ed3 PA |
6873 | return (type != bp_watchpoint && type != bp_catchpoint); |
6874 | } | |
6875 | ||
6876 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6877 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6878 | ||
6879 | static int | |
4a64f543 MS |
6880 | watchpoint_locations_match (struct bp_location *loc1, |
6881 | struct bp_location *loc2) | |
2d134ed3 | 6882 | { |
3a5c3e22 PA |
6883 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6884 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6885 | ||
6886 | /* Both of them must exist. */ | |
6887 | gdb_assert (w1 != NULL); | |
6888 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6889 | |
4a64f543 MS |
6890 | /* If the target can evaluate the condition expression in hardware, |
6891 | then we we need to insert both watchpoints even if they are at | |
6892 | the same place. Otherwise the watchpoint will only trigger when | |
6893 | the condition of whichever watchpoint was inserted evaluates to | |
6894 | true, not giving a chance for GDB to check the condition of the | |
6895 | other watchpoint. */ | |
3a5c3e22 | 6896 | if ((w1->cond_exp |
4a64f543 MS |
6897 | && target_can_accel_watchpoint_condition (loc1->address, |
6898 | loc1->length, | |
0cf6dd15 | 6899 | loc1->watchpoint_type, |
4d01a485 | 6900 | w1->cond_exp.get ())) |
3a5c3e22 | 6901 | || (w2->cond_exp |
4a64f543 MS |
6902 | && target_can_accel_watchpoint_condition (loc2->address, |
6903 | loc2->length, | |
0cf6dd15 | 6904 | loc2->watchpoint_type, |
4d01a485 | 6905 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6906 | return 0; |
6907 | ||
85d721b8 PA |
6908 | /* Note that this checks the owner's type, not the location's. In |
6909 | case the target does not support read watchpoints, but does | |
6910 | support access watchpoints, we'll have bp_read_watchpoint | |
6911 | watchpoints with hw_access locations. Those should be considered | |
6912 | duplicates of hw_read locations. The hw_read locations will | |
6913 | become hw_access locations later. */ | |
2d134ed3 PA |
6914 | return (loc1->owner->type == loc2->owner->type |
6915 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6916 | && loc1->address == loc2->address | |
6917 | && loc1->length == loc2->length); | |
e4f237da KB |
6918 | } |
6919 | ||
31e77af2 | 6920 | /* See breakpoint.h. */ |
6c95b8df | 6921 | |
31e77af2 | 6922 | int |
6c95b8df PA |
6923 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
6924 | struct address_space *aspace2, CORE_ADDR addr2) | |
6925 | { | |
f5656ead | 6926 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6927 | || aspace1 == aspace2) |
6928 | && addr1 == addr2); | |
6929 | } | |
6930 | ||
f1310107 TJB |
6931 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6932 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6933 | matches ASPACE2. On targets that have global breakpoints, the address | |
6934 | space doesn't really matter. */ | |
6935 | ||
6936 | static int | |
6937 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6938 | int len1, struct address_space *aspace2, | |
6939 | CORE_ADDR addr2) | |
6940 | { | |
f5656ead | 6941 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6942 | || aspace1 == aspace2) |
6943 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6944 | } | |
6945 | ||
6946 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6947 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6948 | matches the breakpoint's address space. On targets that have global | |
6949 | breakpoints, the address space doesn't really matter. */ | |
6950 | ||
6951 | static int | |
6952 | breakpoint_location_address_match (struct bp_location *bl, | |
6953 | struct address_space *aspace, | |
6954 | CORE_ADDR addr) | |
6955 | { | |
6956 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6957 | aspace, addr) | |
6958 | || (bl->length | |
6959 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6960 | bl->address, bl->length, | |
6961 | aspace, addr))); | |
6962 | } | |
6963 | ||
d35ae833 PA |
6964 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6965 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6966 | match happens only if ASPACE matches the breakpoint's address | |
6967 | space. On targets that have global breakpoints, the address space | |
6968 | doesn't really matter. */ | |
6969 | ||
6970 | static int | |
6971 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
6972 | struct address_space *aspace, | |
6973 | CORE_ADDR addr, int len) | |
6974 | { | |
6975 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6976 | || bl->pspace->aspace == aspace) | |
6977 | { | |
6978 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6979 | ||
6980 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6981 | return 1; | |
6982 | } | |
6983 | return 0; | |
6984 | } | |
6985 | ||
1e4d1764 YQ |
6986 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6987 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6988 | true, otherwise returns false. */ | |
6989 | ||
6990 | static int | |
6991 | tracepoint_locations_match (struct bp_location *loc1, | |
6992 | struct bp_location *loc2) | |
6993 | { | |
6994 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6995 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6996 | locations at the same address of different tracepoints are regarded as | |
6997 | different locations. */ | |
6998 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6999 | else | |
7000 | return 0; | |
7001 | } | |
7002 | ||
2d134ed3 PA |
7003 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
7004 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
7005 | represent the same location. */ | |
7006 | ||
7007 | static int | |
4a64f543 MS |
7008 | breakpoint_locations_match (struct bp_location *loc1, |
7009 | struct bp_location *loc2) | |
2d134ed3 | 7010 | { |
2bdf28a0 JK |
7011 | int hw_point1, hw_point2; |
7012 | ||
7013 | /* Both of them must not be in moribund_locations. */ | |
7014 | gdb_assert (loc1->owner != NULL); | |
7015 | gdb_assert (loc2->owner != NULL); | |
7016 | ||
7017 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7018 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7019 | |
7020 | if (hw_point1 != hw_point2) | |
7021 | return 0; | |
7022 | else if (hw_point1) | |
7023 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7024 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7025 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7026 | else |
f1310107 TJB |
7027 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
7028 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
7029 | loc2->pspace->aspace, loc2->address) | |
7030 | && loc1->length == loc2->length); | |
2d134ed3 PA |
7031 | } |
7032 | ||
76897487 KB |
7033 | static void |
7034 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
7035 | int bnum, int have_bnum) | |
7036 | { | |
f63fbe86 MS |
7037 | /* The longest string possibly returned by hex_string_custom |
7038 | is 50 chars. These must be at least that big for safety. */ | |
7039 | char astr1[64]; | |
7040 | char astr2[64]; | |
76897487 | 7041 | |
bb599908 PH |
7042 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7043 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7044 | if (have_bnum) |
8a3fe4f8 | 7045 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7046 | bnum, astr1, astr2); |
7047 | else | |
8a3fe4f8 | 7048 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7049 | } |
7050 | ||
4a64f543 MS |
7051 | /* Adjust a breakpoint's address to account for architectural |
7052 | constraints on breakpoint placement. Return the adjusted address. | |
7053 | Note: Very few targets require this kind of adjustment. For most | |
7054 | targets, this function is simply the identity function. */ | |
76897487 KB |
7055 | |
7056 | static CORE_ADDR | |
a6d9a66e UW |
7057 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7058 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7059 | { |
a6d9a66e | 7060 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7061 | { |
7062 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7063 | return bpaddr; | |
7064 | } | |
88f7da05 KB |
7065 | else if (bptype == bp_watchpoint |
7066 | || bptype == bp_hardware_watchpoint | |
7067 | || bptype == bp_read_watchpoint | |
7068 | || bptype == bp_access_watchpoint | |
fe798b75 | 7069 | || bptype == bp_catchpoint) |
88f7da05 KB |
7070 | { |
7071 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7072 | have their addresses modified. */ | |
7073 | return bpaddr; | |
7074 | } | |
7c16b83e PA |
7075 | else if (bptype == bp_single_step) |
7076 | { | |
7077 | /* Single-step breakpoints should not have their addresses | |
7078 | modified. If there's any architectural constrain that | |
7079 | applies to this address, then it should have already been | |
7080 | taken into account when the breakpoint was created in the | |
7081 | first place. If we didn't do this, stepping through e.g., | |
7082 | Thumb-2 IT blocks would break. */ | |
7083 | return bpaddr; | |
7084 | } | |
76897487 KB |
7085 | else |
7086 | { | |
7087 | CORE_ADDR adjusted_bpaddr; | |
7088 | ||
7089 | /* Some targets have architectural constraints on the placement | |
7090 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7091 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7092 | |
7093 | /* An adjusted breakpoint address can significantly alter | |
7094 | a user's expectations. Print a warning if an adjustment | |
7095 | is required. */ | |
7096 | if (adjusted_bpaddr != bpaddr) | |
7097 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7098 | ||
7099 | return adjusted_bpaddr; | |
7100 | } | |
7101 | } | |
7102 | ||
5625a286 | 7103 | bp_location::bp_location (const bp_location_ops *ops, breakpoint *owner) |
7cc221ef | 7104 | { |
5625a286 | 7105 | bp_location *loc = this; |
7cc221ef | 7106 | |
348d480f PA |
7107 | gdb_assert (ops != NULL); |
7108 | ||
28010a5d PA |
7109 | loc->ops = ops; |
7110 | loc->owner = owner; | |
b775012e | 7111 | loc->cond_bytecode = NULL; |
0d381245 VP |
7112 | loc->shlib_disabled = 0; |
7113 | loc->enabled = 1; | |
e049a4b5 | 7114 | |
28010a5d | 7115 | switch (owner->type) |
e049a4b5 DJ |
7116 | { |
7117 | case bp_breakpoint: | |
7c16b83e | 7118 | case bp_single_step: |
e049a4b5 DJ |
7119 | case bp_until: |
7120 | case bp_finish: | |
7121 | case bp_longjmp: | |
7122 | case bp_longjmp_resume: | |
e2e4d78b | 7123 | case bp_longjmp_call_dummy: |
186c406b TT |
7124 | case bp_exception: |
7125 | case bp_exception_resume: | |
e049a4b5 | 7126 | case bp_step_resume: |
2c03e5be | 7127 | case bp_hp_step_resume: |
e049a4b5 DJ |
7128 | case bp_watchpoint_scope: |
7129 | case bp_call_dummy: | |
aa7d318d | 7130 | case bp_std_terminate: |
e049a4b5 DJ |
7131 | case bp_shlib_event: |
7132 | case bp_thread_event: | |
7133 | case bp_overlay_event: | |
4efc6507 | 7134 | case bp_jit_event: |
0fd8e87f | 7135 | case bp_longjmp_master: |
aa7d318d | 7136 | case bp_std_terminate_master: |
186c406b | 7137 | case bp_exception_master: |
0e30163f JK |
7138 | case bp_gnu_ifunc_resolver: |
7139 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7140 | case bp_dprintf: |
e049a4b5 | 7141 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7142 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7143 | break; |
7144 | case bp_hardware_breakpoint: | |
7145 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7146 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7147 | break; |
7148 | case bp_hardware_watchpoint: | |
7149 | case bp_read_watchpoint: | |
7150 | case bp_access_watchpoint: | |
7151 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7152 | break; | |
7153 | case bp_watchpoint: | |
ce78b96d | 7154 | case bp_catchpoint: |
15c3d785 PA |
7155 | case bp_tracepoint: |
7156 | case bp_fast_tracepoint: | |
0fb4aa4b | 7157 | case bp_static_tracepoint: |
e049a4b5 DJ |
7158 | loc->loc_type = bp_loc_other; |
7159 | break; | |
7160 | default: | |
e2e0b3e5 | 7161 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7162 | } |
7163 | ||
f431efe5 | 7164 | loc->refc = 1; |
28010a5d PA |
7165 | } |
7166 | ||
7167 | /* Allocate a struct bp_location. */ | |
7168 | ||
7169 | static struct bp_location * | |
7170 | allocate_bp_location (struct breakpoint *bpt) | |
7171 | { | |
348d480f PA |
7172 | return bpt->ops->allocate_location (bpt); |
7173 | } | |
7cc221ef | 7174 | |
f431efe5 PA |
7175 | static void |
7176 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7177 | { |
348d480f | 7178 | loc->ops->dtor (loc); |
4d01a485 | 7179 | delete loc; |
fe3f5fa8 VP |
7180 | } |
7181 | ||
f431efe5 PA |
7182 | /* Increment reference count. */ |
7183 | ||
7184 | static void | |
7185 | incref_bp_location (struct bp_location *bl) | |
7186 | { | |
7187 | ++bl->refc; | |
7188 | } | |
7189 | ||
7190 | /* Decrement reference count. If the reference count reaches 0, | |
7191 | destroy the bp_location. Sets *BLP to NULL. */ | |
7192 | ||
7193 | static void | |
7194 | decref_bp_location (struct bp_location **blp) | |
7195 | { | |
0807b50c PA |
7196 | gdb_assert ((*blp)->refc > 0); |
7197 | ||
f431efe5 PA |
7198 | if (--(*blp)->refc == 0) |
7199 | free_bp_location (*blp); | |
7200 | *blp = NULL; | |
7201 | } | |
7202 | ||
346774a9 | 7203 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7204 | |
b270e6f9 TT |
7205 | static breakpoint * |
7206 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7207 | { |
346774a9 | 7208 | struct breakpoint *b1; |
b270e6f9 | 7209 | struct breakpoint *result = b.get (); |
c906108c | 7210 | |
346774a9 PA |
7211 | /* Add this breakpoint to the end of the chain so that a list of |
7212 | breakpoints will come out in order of increasing numbers. */ | |
7213 | ||
7214 | b1 = breakpoint_chain; | |
7215 | if (b1 == 0) | |
b270e6f9 | 7216 | breakpoint_chain = b.release (); |
346774a9 PA |
7217 | else |
7218 | { | |
7219 | while (b1->next) | |
7220 | b1 = b1->next; | |
b270e6f9 | 7221 | b1->next = b.release (); |
346774a9 | 7222 | } |
b270e6f9 TT |
7223 | |
7224 | return result; | |
346774a9 PA |
7225 | } |
7226 | ||
7227 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7228 | ||
7229 | static void | |
7230 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7231 | struct gdbarch *gdbarch, | |
28010a5d | 7232 | enum bptype bptype, |
c0a91b2b | 7233 | const struct breakpoint_ops *ops) |
346774a9 | 7234 | { |
348d480f PA |
7235 | gdb_assert (ops != NULL); |
7236 | ||
28010a5d | 7237 | b->ops = ops; |
4d28f7a8 | 7238 | b->type = bptype; |
a6d9a66e | 7239 | b->gdbarch = gdbarch; |
c906108c SS |
7240 | b->language = current_language->la_language; |
7241 | b->input_radix = input_radix; | |
d0fb5eae | 7242 | b->related_breakpoint = b; |
346774a9 PA |
7243 | } |
7244 | ||
7245 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7246 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7247 | |
7248 | static struct breakpoint * | |
7249 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7250 | enum bptype bptype, |
c0a91b2b | 7251 | const struct breakpoint_ops *ops) |
346774a9 | 7252 | { |
3b0871f4 | 7253 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7254 | |
3b0871f4 | 7255 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7256 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7257 | } |
7258 | ||
0e30163f JK |
7259 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7260 | resolutions should be made as the user specified the location explicitly | |
7261 | enough. */ | |
7262 | ||
0d381245 | 7263 | static void |
0e30163f | 7264 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7265 | { |
2bdf28a0 JK |
7266 | gdb_assert (loc->owner != NULL); |
7267 | ||
0d381245 | 7268 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7269 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7270 | || is_tracepoint (loc->owner)) |
0d381245 | 7271 | { |
0e30163f | 7272 | int is_gnu_ifunc; |
2c02bd72 | 7273 | const char *function_name; |
6a3a010b | 7274 | CORE_ADDR func_addr; |
0e30163f | 7275 | |
2c02bd72 | 7276 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7277 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7278 | |
7279 | if (is_gnu_ifunc && !explicit_loc) | |
7280 | { | |
7281 | struct breakpoint *b = loc->owner; | |
7282 | ||
7283 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7284 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7285 | &loc->requested_address)) |
7286 | { | |
7287 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7288 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7289 | loc->requested_address, | |
7290 | b->type); | |
7291 | } | |
7292 | else if (b->type == bp_breakpoint && b->loc == loc | |
7293 | && loc->next == NULL && b->related_breakpoint == b) | |
7294 | { | |
7295 | /* Create only the whole new breakpoint of this type but do not | |
7296 | mess more complicated breakpoints with multiple locations. */ | |
7297 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7298 | /* Remember the resolver's address for use by the return |
7299 | breakpoint. */ | |
7300 | loc->related_address = func_addr; | |
0e30163f JK |
7301 | } |
7302 | } | |
7303 | ||
2c02bd72 DE |
7304 | if (function_name) |
7305 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7306 | } |
7307 | } | |
7308 | ||
a6d9a66e | 7309 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7310 | struct gdbarch * |
a6d9a66e UW |
7311 | get_sal_arch (struct symtab_and_line sal) |
7312 | { | |
7313 | if (sal.section) | |
7314 | return get_objfile_arch (sal.section->objfile); | |
7315 | if (sal.symtab) | |
eb822aa6 | 7316 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7317 | |
7318 | return NULL; | |
7319 | } | |
7320 | ||
346774a9 PA |
7321 | /* Low level routine for partially initializing a breakpoint of type |
7322 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7323 | file name, and line number are provided by SAL. |
0d381245 VP |
7324 | |
7325 | It is expected that the caller will complete the initialization of | |
7326 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7327 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7328 | |
346774a9 PA |
7329 | static void |
7330 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7331 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7332 | const struct breakpoint_ops *ops) |
0d381245 | 7333 | { |
28010a5d | 7334 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7335 | |
3742cc8b | 7336 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7337 | |
6c95b8df PA |
7338 | if (bptype != bp_catchpoint) |
7339 | gdb_assert (sal.pspace != NULL); | |
7340 | ||
f8eba3c6 TT |
7341 | /* Store the program space that was used to set the breakpoint, |
7342 | except for ordinary breakpoints, which are independent of the | |
7343 | program space. */ | |
7344 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7345 | b->pspace = sal.pspace; | |
346774a9 | 7346 | } |
c906108c | 7347 | |
346774a9 PA |
7348 | /* set_raw_breakpoint is a low level routine for allocating and |
7349 | partially initializing a breakpoint of type BPTYPE. The newly | |
7350 | created breakpoint's address, section, source file name, and line | |
7351 | number are provided by SAL. The newly created and partially | |
7352 | initialized breakpoint is added to the breakpoint chain and | |
7353 | is also returned as the value of this function. | |
7354 | ||
7355 | It is expected that the caller will complete the initialization of | |
7356 | the newly created breakpoint struct as well as output any status | |
7357 | information regarding the creation of a new breakpoint. In | |
7358 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7359 | number! Care should be taken to not allow an error to occur | |
7360 | prior to completing the initialization of the breakpoint. If this | |
7361 | should happen, a bogus breakpoint will be left on the chain. */ | |
7362 | ||
7363 | struct breakpoint * | |
7364 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7365 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7366 | const struct breakpoint_ops *ops) |
346774a9 | 7367 | { |
3b0871f4 | 7368 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7369 | |
3b0871f4 | 7370 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7371 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7372 | } |
7373 | ||
53a5351d | 7374 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7375 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7376 | initiated the operation. */ | |
c906108c SS |
7377 | |
7378 | void | |
186c406b | 7379 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7380 | { |
35df4500 | 7381 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7382 | int thread = tp->global_num; |
0fd8e87f UW |
7383 | |
7384 | /* To avoid having to rescan all objfile symbols at every step, | |
7385 | we maintain a list of continually-inserted but always disabled | |
7386 | longjmp "master" breakpoints. Here, we simply create momentary | |
7387 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7388 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7389 | if (b->pspace == current_program_space |
186c406b TT |
7390 | && (b->type == bp_longjmp_master |
7391 | || b->type == bp_exception_master)) | |
0fd8e87f | 7392 | { |
06edf0c0 PA |
7393 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7394 | struct breakpoint *clone; | |
cc59ec59 | 7395 | |
e2e4d78b JK |
7396 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7397 | after their removal. */ | |
06edf0c0 | 7398 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7399 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7400 | clone->thread = thread; |
7401 | } | |
186c406b TT |
7402 | |
7403 | tp->initiating_frame = frame; | |
c906108c SS |
7404 | } |
7405 | ||
611c83ae | 7406 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7407 | void |
611c83ae | 7408 | delete_longjmp_breakpoint (int thread) |
c906108c | 7409 | { |
35df4500 | 7410 | struct breakpoint *b, *b_tmp; |
c906108c | 7411 | |
35df4500 | 7412 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7413 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7414 | { |
7415 | if (b->thread == thread) | |
7416 | delete_breakpoint (b); | |
7417 | } | |
c906108c SS |
7418 | } |
7419 | ||
f59f708a PA |
7420 | void |
7421 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7422 | { | |
7423 | struct breakpoint *b, *b_tmp; | |
7424 | ||
7425 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7426 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7427 | { | |
7428 | if (b->thread == thread) | |
7429 | b->disposition = disp_del_at_next_stop; | |
7430 | } | |
7431 | } | |
7432 | ||
e2e4d78b JK |
7433 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7434 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7435 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7436 | breakpoints. */ | |
7437 | ||
7438 | struct breakpoint * | |
7439 | set_longjmp_breakpoint_for_call_dummy (void) | |
7440 | { | |
7441 | struct breakpoint *b, *retval = NULL; | |
7442 | ||
7443 | ALL_BREAKPOINTS (b) | |
7444 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7445 | { | |
7446 | struct breakpoint *new_b; | |
7447 | ||
7448 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7449 | &momentary_breakpoint_ops, |
7450 | 1); | |
5d5658a1 | 7451 | new_b->thread = ptid_to_global_thread_id (inferior_ptid); |
e2e4d78b JK |
7452 | |
7453 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7454 | ||
7455 | gdb_assert (new_b->related_breakpoint == new_b); | |
7456 | if (retval == NULL) | |
7457 | retval = new_b; | |
7458 | new_b->related_breakpoint = retval; | |
7459 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7460 | retval = retval->related_breakpoint; | |
7461 | retval->related_breakpoint = new_b; | |
7462 | } | |
7463 | ||
7464 | return retval; | |
7465 | } | |
7466 | ||
7467 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7468 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7469 | stack. |
7470 | ||
7471 | You should call this function only at places where it is safe to currently | |
7472 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7473 | frames. */ | |
7474 | ||
7475 | void | |
b67a2c6f | 7476 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7477 | { |
7478 | struct breakpoint *b, *b_tmp; | |
7479 | ||
7480 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7481 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7482 | { |
7483 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7484 | ||
7485 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7486 | dummy_b = dummy_b->related_breakpoint; | |
7487 | if (dummy_b->type != bp_call_dummy | |
7488 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7489 | continue; | |
7490 | ||
b67a2c6f | 7491 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7492 | |
7493 | while (b->related_breakpoint != b) | |
7494 | { | |
7495 | if (b_tmp == b->related_breakpoint) | |
7496 | b_tmp = b->related_breakpoint->next; | |
7497 | delete_breakpoint (b->related_breakpoint); | |
7498 | } | |
7499 | delete_breakpoint (b); | |
7500 | } | |
7501 | } | |
7502 | ||
1900040c MS |
7503 | void |
7504 | enable_overlay_breakpoints (void) | |
7505 | { | |
52f0bd74 | 7506 | struct breakpoint *b; |
1900040c MS |
7507 | |
7508 | ALL_BREAKPOINTS (b) | |
7509 | if (b->type == bp_overlay_event) | |
7510 | { | |
7511 | b->enable_state = bp_enabled; | |
44702360 | 7512 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7513 | overlay_events_enabled = 1; |
1900040c MS |
7514 | } |
7515 | } | |
7516 | ||
7517 | void | |
7518 | disable_overlay_breakpoints (void) | |
7519 | { | |
52f0bd74 | 7520 | struct breakpoint *b; |
1900040c MS |
7521 | |
7522 | ALL_BREAKPOINTS (b) | |
7523 | if (b->type == bp_overlay_event) | |
7524 | { | |
7525 | b->enable_state = bp_disabled; | |
44702360 | 7526 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7527 | overlay_events_enabled = 0; |
1900040c MS |
7528 | } |
7529 | } | |
7530 | ||
aa7d318d TT |
7531 | /* Set an active std::terminate breakpoint for each std::terminate |
7532 | master breakpoint. */ | |
7533 | void | |
7534 | set_std_terminate_breakpoint (void) | |
7535 | { | |
35df4500 | 7536 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7537 | |
35df4500 | 7538 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7539 | if (b->pspace == current_program_space |
7540 | && b->type == bp_std_terminate_master) | |
7541 | { | |
06edf0c0 | 7542 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7543 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7544 | } |
7545 | } | |
7546 | ||
7547 | /* Delete all the std::terminate breakpoints. */ | |
7548 | void | |
7549 | delete_std_terminate_breakpoint (void) | |
7550 | { | |
35df4500 | 7551 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7552 | |
35df4500 | 7553 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7554 | if (b->type == bp_std_terminate) |
7555 | delete_breakpoint (b); | |
7556 | } | |
7557 | ||
c4093a6a | 7558 | struct breakpoint * |
a6d9a66e | 7559 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7560 | { |
7561 | struct breakpoint *b; | |
c4093a6a | 7562 | |
06edf0c0 PA |
7563 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7564 | &internal_breakpoint_ops); | |
7565 | ||
b5de0fa7 | 7566 | b->enable_state = bp_enabled; |
f00aae0f | 7567 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7568 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7569 | |
44702360 | 7570 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7571 | |
c4093a6a JM |
7572 | return b; |
7573 | } | |
7574 | ||
0101ce28 JJ |
7575 | struct lang_and_radix |
7576 | { | |
7577 | enum language lang; | |
7578 | int radix; | |
7579 | }; | |
7580 | ||
4efc6507 DE |
7581 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7582 | ||
7583 | struct breakpoint * | |
7584 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7585 | { | |
2a7f3dff PA |
7586 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7587 | &internal_breakpoint_ops); | |
4efc6507 | 7588 | } |
0101ce28 | 7589 | |
03673fc7 PP |
7590 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7591 | ||
7592 | void | |
7593 | remove_jit_event_breakpoints (void) | |
7594 | { | |
7595 | struct breakpoint *b, *b_tmp; | |
7596 | ||
7597 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7598 | if (b->type == bp_jit_event | |
7599 | && b->loc->pspace == current_program_space) | |
7600 | delete_breakpoint (b); | |
7601 | } | |
7602 | ||
cae688ec JJ |
7603 | void |
7604 | remove_solib_event_breakpoints (void) | |
7605 | { | |
35df4500 | 7606 | struct breakpoint *b, *b_tmp; |
cae688ec | 7607 | |
35df4500 | 7608 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7609 | if (b->type == bp_shlib_event |
7610 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7611 | delete_breakpoint (b); |
7612 | } | |
7613 | ||
f37f681c PA |
7614 | /* See breakpoint.h. */ |
7615 | ||
7616 | void | |
7617 | remove_solib_event_breakpoints_at_next_stop (void) | |
7618 | { | |
7619 | struct breakpoint *b, *b_tmp; | |
7620 | ||
7621 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7622 | if (b->type == bp_shlib_event | |
7623 | && b->loc->pspace == current_program_space) | |
7624 | b->disposition = disp_del_at_next_stop; | |
7625 | } | |
7626 | ||
04086b45 PA |
7627 | /* Helper for create_solib_event_breakpoint / |
7628 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7629 | INSERT_MODE to pass through to update_global_location_list. */ | |
7630 | ||
7631 | static struct breakpoint * | |
7632 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7633 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7634 | { |
7635 | struct breakpoint *b; | |
7636 | ||
06edf0c0 PA |
7637 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7638 | &internal_breakpoint_ops); | |
04086b45 | 7639 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7640 | return b; |
7641 | } | |
7642 | ||
04086b45 PA |
7643 | struct breakpoint * |
7644 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7645 | { | |
7646 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7647 | } | |
7648 | ||
f37f681c PA |
7649 | /* See breakpoint.h. */ |
7650 | ||
7651 | struct breakpoint * | |
7652 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7653 | { | |
7654 | struct breakpoint *b; | |
7655 | ||
04086b45 PA |
7656 | /* Explicitly tell update_global_location_list to insert |
7657 | locations. */ | |
7658 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7659 | if (!b->loc->inserted) |
7660 | { | |
7661 | delete_breakpoint (b); | |
7662 | return NULL; | |
7663 | } | |
7664 | return b; | |
7665 | } | |
7666 | ||
cae688ec JJ |
7667 | /* Disable any breakpoints that are on code in shared libraries. Only |
7668 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7669 | ||
7670 | void | |
cb851954 | 7671 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7672 | { |
876fa593 | 7673 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7674 | |
876fa593 | 7675 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7676 | { |
2bdf28a0 | 7677 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7678 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7679 | |
4a64f543 MS |
7680 | /* We apply the check to all breakpoints, including disabled for |
7681 | those with loc->duplicate set. This is so that when breakpoint | |
7682 | becomes enabled, or the duplicate is removed, gdb will try to | |
7683 | insert all breakpoints. If we don't set shlib_disabled here, | |
7684 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7685 | if (((b->type == bp_breakpoint) |
508ccb1f | 7686 | || (b->type == bp_jit_event) |
1042e4c0 | 7687 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7688 | || (is_tracepoint (b))) |
6c95b8df | 7689 | && loc->pspace == current_program_space |
0d381245 | 7690 | && !loc->shlib_disabled |
6c95b8df | 7691 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7692 | ) |
0d381245 VP |
7693 | { |
7694 | loc->shlib_disabled = 1; | |
7695 | } | |
cae688ec JJ |
7696 | } |
7697 | } | |
7698 | ||
63644780 NB |
7699 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7700 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7701 | disabled ones can just stay disabled. */ | |
84acb35a | 7702 | |
75149521 | 7703 | static void |
84acb35a JJ |
7704 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7705 | { | |
876fa593 | 7706 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7707 | int disabled_shlib_breaks = 0; |
7708 | ||
876fa593 | 7709 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7710 | { |
2bdf28a0 | 7711 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7712 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7713 | |
1e4d1764 | 7714 | if (solib->pspace == loc->pspace |
e2dd7057 | 7715 | && !loc->shlib_disabled |
1e4d1764 YQ |
7716 | && (((b->type == bp_breakpoint |
7717 | || b->type == bp_jit_event | |
7718 | || b->type == bp_hardware_breakpoint) | |
7719 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7720 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7721 | || is_tracepoint (b)) | |
e2dd7057 | 7722 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7723 | { |
e2dd7057 PP |
7724 | loc->shlib_disabled = 1; |
7725 | /* At this point, we cannot rely on remove_breakpoint | |
7726 | succeeding so we must mark the breakpoint as not inserted | |
7727 | to prevent future errors occurring in remove_breakpoints. */ | |
7728 | loc->inserted = 0; | |
8d3788bd VP |
7729 | |
7730 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7731 | observer_notify_breakpoint_modified (b); | |
7732 | ||
e2dd7057 PP |
7733 | if (!disabled_shlib_breaks) |
7734 | { | |
223ffa71 | 7735 | target_terminal::ours_for_output (); |
3e43a32a MS |
7736 | warning (_("Temporarily disabling breakpoints " |
7737 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7738 | solib->so_name); |
84acb35a | 7739 | } |
e2dd7057 | 7740 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7741 | } |
7742 | } | |
84acb35a JJ |
7743 | } |
7744 | ||
63644780 NB |
7745 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7746 | notification of free_objfile. Only apply to enabled breakpoints, | |
7747 | disabled ones can just stay disabled. */ | |
7748 | ||
7749 | static void | |
7750 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7751 | { | |
7752 | struct breakpoint *b; | |
7753 | ||
7754 | if (objfile == NULL) | |
7755 | return; | |
7756 | ||
d03de421 PA |
7757 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7758 | managed by the user with add-symbol-file/remove-symbol-file. | |
7759 | Similarly to how breakpoints in shared libraries are handled in | |
7760 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7761 | shlib_disabled so they end up uninserted on the next global |
7762 | location list update. Shared libraries not loaded by the user | |
7763 | aren't handled here -- they're already handled in | |
7764 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7765 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7766 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7767 | main objfile). */ | |
7768 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7769 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7770 | return; |
7771 | ||
7772 | ALL_BREAKPOINTS (b) | |
7773 | { | |
7774 | struct bp_location *loc; | |
7775 | int bp_modified = 0; | |
7776 | ||
7777 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7778 | continue; | |
7779 | ||
7780 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7781 | { | |
7782 | CORE_ADDR loc_addr = loc->address; | |
7783 | ||
7784 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7785 | && loc->loc_type != bp_loc_software_breakpoint) | |
7786 | continue; | |
7787 | ||
7788 | if (loc->shlib_disabled != 0) | |
7789 | continue; | |
7790 | ||
7791 | if (objfile->pspace != loc->pspace) | |
7792 | continue; | |
7793 | ||
7794 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7795 | && loc->loc_type != bp_loc_software_breakpoint) | |
7796 | continue; | |
7797 | ||
7798 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7799 | { | |
7800 | loc->shlib_disabled = 1; | |
08351840 PA |
7801 | /* At this point, we don't know whether the object was |
7802 | unmapped from the inferior or not, so leave the | |
7803 | inserted flag alone. We'll handle failure to | |
7804 | uninsert quietly, in case the object was indeed | |
7805 | unmapped. */ | |
63644780 NB |
7806 | |
7807 | mark_breakpoint_location_modified (loc); | |
7808 | ||
7809 | bp_modified = 1; | |
7810 | } | |
7811 | } | |
7812 | ||
7813 | if (bp_modified) | |
7814 | observer_notify_breakpoint_modified (b); | |
7815 | } | |
7816 | } | |
7817 | ||
ce78b96d JB |
7818 | /* FORK & VFORK catchpoints. */ |
7819 | ||
e29a4733 | 7820 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7821 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7822 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7823 | |
c1fc2657 | 7824 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7825 | { |
e29a4733 PA |
7826 | /* Process id of a child process whose forking triggered this |
7827 | catchpoint. This field is only valid immediately after this | |
7828 | catchpoint has triggered. */ | |
7829 | ptid_t forked_inferior_pid; | |
7830 | }; | |
7831 | ||
4a64f543 MS |
7832 | /* Implement the "insert" breakpoint_ops method for fork |
7833 | catchpoints. */ | |
ce78b96d | 7834 | |
77b06cd7 TJB |
7835 | static int |
7836 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7837 | { |
dfd4cc63 | 7838 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7839 | } |
7840 | ||
4a64f543 MS |
7841 | /* Implement the "remove" breakpoint_ops method for fork |
7842 | catchpoints. */ | |
ce78b96d JB |
7843 | |
7844 | static int | |
73971819 | 7845 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7846 | { |
dfd4cc63 | 7847 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7848 | } |
7849 | ||
7850 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7851 | catchpoints. */ | |
7852 | ||
7853 | static int | |
f1310107 | 7854 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7855 | struct address_space *aspace, CORE_ADDR bp_addr, |
7856 | const struct target_waitstatus *ws) | |
ce78b96d | 7857 | { |
e29a4733 PA |
7858 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7859 | ||
f90263c1 TT |
7860 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7861 | return 0; | |
7862 | ||
7863 | c->forked_inferior_pid = ws->value.related_pid; | |
7864 | return 1; | |
ce78b96d JB |
7865 | } |
7866 | ||
4a64f543 MS |
7867 | /* Implement the "print_it" breakpoint_ops method for fork |
7868 | catchpoints. */ | |
ce78b96d JB |
7869 | |
7870 | static enum print_stop_action | |
348d480f | 7871 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7872 | { |
36dfb11c | 7873 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7874 | struct breakpoint *b = bs->breakpoint_at; |
7875 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7876 | |
ce78b96d | 7877 | annotate_catchpoint (b->number); |
f303dbd6 | 7878 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7879 | if (b->disposition == disp_del) |
112e8700 | 7880 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7881 | else |
112e8700 SM |
7882 | uiout->text ("Catchpoint "); |
7883 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7884 | { |
112e8700 SM |
7885 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7886 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7887 | } |
112e8700 SM |
7888 | uiout->field_int ("bkptno", b->number); |
7889 | uiout->text (" (forked process "); | |
7890 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7891 | uiout->text ("), "); | |
ce78b96d JB |
7892 | return PRINT_SRC_AND_LOC; |
7893 | } | |
7894 | ||
4a64f543 MS |
7895 | /* Implement the "print_one" breakpoint_ops method for fork |
7896 | catchpoints. */ | |
ce78b96d JB |
7897 | |
7898 | static void | |
a6d9a66e | 7899 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7900 | { |
e29a4733 | 7901 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7902 | struct value_print_options opts; |
79a45e25 | 7903 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7904 | |
7905 | get_user_print_options (&opts); | |
7906 | ||
4a64f543 MS |
7907 | /* Field 4, the address, is omitted (which makes the columns not |
7908 | line up too nicely with the headers, but the effect is relatively | |
7909 | readable). */ | |
79a45b7d | 7910 | if (opts.addressprint) |
112e8700 | 7911 | uiout->field_skip ("addr"); |
ce78b96d | 7912 | annotate_field (5); |
112e8700 | 7913 | uiout->text ("fork"); |
e29a4733 | 7914 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 7915 | { |
112e8700 SM |
7916 | uiout->text (", process "); |
7917 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
7918 | uiout->spaces (1); | |
ce78b96d | 7919 | } |
8ac3646f | 7920 | |
112e8700 SM |
7921 | if (uiout->is_mi_like_p ()) |
7922 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7923 | } |
7924 | ||
7925 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7926 | catchpoints. */ | |
7927 | ||
7928 | static void | |
7929 | print_mention_catch_fork (struct breakpoint *b) | |
7930 | { | |
7931 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7932 | } | |
7933 | ||
6149aea9 PA |
7934 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7935 | catchpoints. */ | |
7936 | ||
7937 | static void | |
7938 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7939 | { | |
7940 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7941 | print_recreate_thread (b, fp); |
6149aea9 PA |
7942 | } |
7943 | ||
ce78b96d JB |
7944 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7945 | ||
2060206e | 7946 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7947 | |
4a64f543 MS |
7948 | /* Implement the "insert" breakpoint_ops method for vfork |
7949 | catchpoints. */ | |
ce78b96d | 7950 | |
77b06cd7 TJB |
7951 | static int |
7952 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7953 | { |
dfd4cc63 | 7954 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7955 | } |
7956 | ||
4a64f543 MS |
7957 | /* Implement the "remove" breakpoint_ops method for vfork |
7958 | catchpoints. */ | |
ce78b96d JB |
7959 | |
7960 | static int | |
73971819 | 7961 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7962 | { |
dfd4cc63 | 7963 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7964 | } |
7965 | ||
7966 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7967 | catchpoints. */ | |
7968 | ||
7969 | static int | |
f1310107 | 7970 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7971 | struct address_space *aspace, CORE_ADDR bp_addr, |
7972 | const struct target_waitstatus *ws) | |
ce78b96d | 7973 | { |
e29a4733 PA |
7974 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7975 | ||
f90263c1 TT |
7976 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7977 | return 0; | |
7978 | ||
7979 | c->forked_inferior_pid = ws->value.related_pid; | |
7980 | return 1; | |
ce78b96d JB |
7981 | } |
7982 | ||
4a64f543 MS |
7983 | /* Implement the "print_it" breakpoint_ops method for vfork |
7984 | catchpoints. */ | |
ce78b96d JB |
7985 | |
7986 | static enum print_stop_action | |
348d480f | 7987 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7988 | { |
36dfb11c | 7989 | struct ui_out *uiout = current_uiout; |
348d480f | 7990 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7991 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7992 | ||
ce78b96d | 7993 | annotate_catchpoint (b->number); |
f303dbd6 | 7994 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7995 | if (b->disposition == disp_del) |
112e8700 | 7996 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7997 | else |
112e8700 SM |
7998 | uiout->text ("Catchpoint "); |
7999 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8000 | { |
112e8700 SM |
8001 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
8002 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8003 | } |
112e8700 SM |
8004 | uiout->field_int ("bkptno", b->number); |
8005 | uiout->text (" (vforked process "); | |
8006 | uiout->field_int ("newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8007 | uiout->text ("), "); | |
ce78b96d JB |
8008 | return PRINT_SRC_AND_LOC; |
8009 | } | |
8010 | ||
4a64f543 MS |
8011 | /* Implement the "print_one" breakpoint_ops method for vfork |
8012 | catchpoints. */ | |
ce78b96d JB |
8013 | |
8014 | static void | |
a6d9a66e | 8015 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8016 | { |
e29a4733 | 8017 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8018 | struct value_print_options opts; |
79a45e25 | 8019 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8020 | |
8021 | get_user_print_options (&opts); | |
4a64f543 MS |
8022 | /* Field 4, the address, is omitted (which makes the columns not |
8023 | line up too nicely with the headers, but the effect is relatively | |
8024 | readable). */ | |
79a45b7d | 8025 | if (opts.addressprint) |
112e8700 | 8026 | uiout->field_skip ("addr"); |
ce78b96d | 8027 | annotate_field (5); |
112e8700 | 8028 | uiout->text ("vfork"); |
e29a4733 | 8029 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d | 8030 | { |
112e8700 SM |
8031 | uiout->text (", process "); |
8032 | uiout->field_int ("what", ptid_get_pid (c->forked_inferior_pid)); | |
8033 | uiout->spaces (1); | |
ce78b96d | 8034 | } |
8ac3646f | 8035 | |
112e8700 SM |
8036 | if (uiout->is_mi_like_p ()) |
8037 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
8038 | } |
8039 | ||
8040 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8041 | catchpoints. */ | |
8042 | ||
8043 | static void | |
8044 | print_mention_catch_vfork (struct breakpoint *b) | |
8045 | { | |
8046 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8047 | } | |
8048 | ||
6149aea9 PA |
8049 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8050 | catchpoints. */ | |
8051 | ||
8052 | static void | |
8053 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8054 | { | |
8055 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8056 | print_recreate_thread (b, fp); |
6149aea9 PA |
8057 | } |
8058 | ||
ce78b96d JB |
8059 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8060 | ||
2060206e | 8061 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8062 | |
edcc5120 | 8063 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 8064 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
8065 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
8066 | ||
c1fc2657 | 8067 | struct solib_catchpoint : public breakpoint |
edcc5120 | 8068 | { |
c1fc2657 | 8069 | ~solib_catchpoint () override; |
edcc5120 TT |
8070 | |
8071 | /* True for "catch load", false for "catch unload". */ | |
8072 | unsigned char is_load; | |
8073 | ||
8074 | /* Regular expression to match, if any. COMPILED is only valid when | |
8075 | REGEX is non-NULL. */ | |
8076 | char *regex; | |
2d7cc5c7 | 8077 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
8078 | }; |
8079 | ||
c1fc2657 | 8080 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 8081 | { |
c1fc2657 | 8082 | xfree (this->regex); |
edcc5120 TT |
8083 | } |
8084 | ||
8085 | static int | |
8086 | insert_catch_solib (struct bp_location *ignore) | |
8087 | { | |
8088 | return 0; | |
8089 | } | |
8090 | ||
8091 | static int | |
73971819 | 8092 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8093 | { |
8094 | return 0; | |
8095 | } | |
8096 | ||
8097 | static int | |
8098 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8099 | struct address_space *aspace, | |
8100 | CORE_ADDR bp_addr, | |
8101 | const struct target_waitstatus *ws) | |
8102 | { | |
8103 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8104 | struct breakpoint *other; | |
8105 | ||
8106 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8107 | return 1; | |
8108 | ||
8109 | ALL_BREAKPOINTS (other) | |
8110 | { | |
8111 | struct bp_location *other_bl; | |
8112 | ||
8113 | if (other == bl->owner) | |
8114 | continue; | |
8115 | ||
8116 | if (other->type != bp_shlib_event) | |
8117 | continue; | |
8118 | ||
c1fc2657 | 8119 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8120 | continue; |
8121 | ||
8122 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8123 | { | |
8124 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8125 | return 1; | |
8126 | } | |
8127 | } | |
8128 | ||
8129 | return 0; | |
8130 | } | |
8131 | ||
8132 | static void | |
8133 | check_status_catch_solib (struct bpstats *bs) | |
8134 | { | |
8135 | struct solib_catchpoint *self | |
8136 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8137 | int ix; | |
8138 | ||
8139 | if (self->is_load) | |
8140 | { | |
8141 | struct so_list *iter; | |
8142 | ||
8143 | for (ix = 0; | |
8144 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8145 | ix, iter); | |
8146 | ++ix) | |
8147 | { | |
8148 | if (!self->regex | |
2d7cc5c7 | 8149 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8150 | return; |
8151 | } | |
8152 | } | |
8153 | else | |
8154 | { | |
8155 | char *iter; | |
8156 | ||
8157 | for (ix = 0; | |
8158 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8159 | ix, iter); | |
8160 | ++ix) | |
8161 | { | |
8162 | if (!self->regex | |
2d7cc5c7 | 8163 | || self->compiled->exec (iter, 0, NULL, 0) == 0) |
edcc5120 TT |
8164 | return; |
8165 | } | |
8166 | } | |
8167 | ||
8168 | bs->stop = 0; | |
8169 | bs->print_it = print_it_noop; | |
8170 | } | |
8171 | ||
8172 | static enum print_stop_action | |
8173 | print_it_catch_solib (bpstat bs) | |
8174 | { | |
8175 | struct breakpoint *b = bs->breakpoint_at; | |
8176 | struct ui_out *uiout = current_uiout; | |
8177 | ||
8178 | annotate_catchpoint (b->number); | |
f303dbd6 | 8179 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8180 | if (b->disposition == disp_del) |
112e8700 | 8181 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8182 | else |
112e8700 SM |
8183 | uiout->text ("Catchpoint "); |
8184 | uiout->field_int ("bkptno", b->number); | |
8185 | uiout->text ("\n"); | |
8186 | if (uiout->is_mi_like_p ()) | |
8187 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8188 | print_solib_event (1); |
8189 | return PRINT_SRC_AND_LOC; | |
8190 | } | |
8191 | ||
8192 | static void | |
8193 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8194 | { | |
8195 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8196 | struct value_print_options opts; | |
8197 | struct ui_out *uiout = current_uiout; | |
8198 | char *msg; | |
8199 | ||
8200 | get_user_print_options (&opts); | |
8201 | /* Field 4, the address, is omitted (which makes the columns not | |
8202 | line up too nicely with the headers, but the effect is relatively | |
8203 | readable). */ | |
8204 | if (opts.addressprint) | |
8205 | { | |
8206 | annotate_field (4); | |
112e8700 | 8207 | uiout->field_skip ("addr"); |
edcc5120 TT |
8208 | } |
8209 | ||
8210 | annotate_field (5); | |
8211 | if (self->is_load) | |
8212 | { | |
8213 | if (self->regex) | |
8214 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8215 | else | |
8216 | msg = xstrdup (_("load of library")); | |
8217 | } | |
8218 | else | |
8219 | { | |
8220 | if (self->regex) | |
8221 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8222 | else | |
8223 | msg = xstrdup (_("unload of library")); | |
8224 | } | |
112e8700 | 8225 | uiout->field_string ("what", msg); |
edcc5120 | 8226 | xfree (msg); |
8ac3646f | 8227 | |
112e8700 SM |
8228 | if (uiout->is_mi_like_p ()) |
8229 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8230 | } |
8231 | ||
8232 | static void | |
8233 | print_mention_catch_solib (struct breakpoint *b) | |
8234 | { | |
8235 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8236 | ||
8237 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8238 | self->is_load ? "load" : "unload"); | |
8239 | } | |
8240 | ||
8241 | static void | |
8242 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8243 | { | |
8244 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8245 | ||
8246 | fprintf_unfiltered (fp, "%s %s", | |
8247 | b->disposition == disp_del ? "tcatch" : "catch", | |
8248 | self->is_load ? "load" : "unload"); | |
8249 | if (self->regex) | |
8250 | fprintf_unfiltered (fp, " %s", self->regex); | |
8251 | fprintf_unfiltered (fp, "\n"); | |
8252 | } | |
8253 | ||
8254 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8255 | ||
91985142 MG |
8256 | /* Shared helper function (MI and CLI) for creating and installing |
8257 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8258 | the events to be caught are load events, otherwise they are | |
8259 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8260 | temporary one. If ENABLED is non-zero the catchpoint is | |
8261 | created in an enabled state. */ | |
edcc5120 | 8262 | |
91985142 | 8263 | void |
a121b7c1 | 8264 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8265 | { |
edcc5120 | 8266 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8267 | |
edcc5120 TT |
8268 | if (!arg) |
8269 | arg = ""; | |
f1735a53 | 8270 | arg = skip_spaces (arg); |
edcc5120 | 8271 | |
36bd8eaa | 8272 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8273 | |
8274 | if (*arg != '\0') | |
8275 | { | |
2d7cc5c7 PA |
8276 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8277 | _("Invalid regexp"))); | |
edcc5120 TT |
8278 | c->regex = xstrdup (arg); |
8279 | } | |
8280 | ||
8281 | c->is_load = is_load; | |
36bd8eaa | 8282 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8283 | &catch_solib_breakpoint_ops); |
8284 | ||
c1fc2657 | 8285 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8286 | |
b270e6f9 | 8287 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8288 | } |
8289 | ||
91985142 MG |
8290 | /* A helper function that does all the work for "catch load" and |
8291 | "catch unload". */ | |
8292 | ||
8293 | static void | |
8294 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8295 | struct cmd_list_element *command) | |
8296 | { | |
8297 | int tempflag; | |
8298 | const int enabled = 1; | |
8299 | ||
8300 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8301 | ||
8302 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8303 | } | |
8304 | ||
edcc5120 TT |
8305 | static void |
8306 | catch_load_command_1 (char *arg, int from_tty, | |
8307 | struct cmd_list_element *command) | |
8308 | { | |
8309 | catch_load_or_unload (arg, from_tty, 1, command); | |
8310 | } | |
8311 | ||
8312 | static void | |
8313 | catch_unload_command_1 (char *arg, int from_tty, | |
8314 | struct cmd_list_element *command) | |
8315 | { | |
8316 | catch_load_or_unload (arg, from_tty, 0, command); | |
8317 | } | |
8318 | ||
346774a9 PA |
8319 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8320 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8321 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8322 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8323 | |
ab04a2af | 8324 | void |
346774a9 PA |
8325 | init_catchpoint (struct breakpoint *b, |
8326 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8327 | const char *cond_string, |
c0a91b2b | 8328 | const struct breakpoint_ops *ops) |
c906108c | 8329 | { |
51abb421 | 8330 | symtab_and_line sal; |
6c95b8df | 8331 | sal.pspace = current_program_space; |
c5aa993b | 8332 | |
28010a5d | 8333 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8334 | |
1b36a34b | 8335 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8336 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8337 | } |
8338 | ||
28010a5d | 8339 | void |
b270e6f9 | 8340 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8341 | { |
b270e6f9 | 8342 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8343 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8344 | if (is_tracepoint (b)) |
8345 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8346 | if (!internal) |
8347 | mention (b); | |
c56053d2 | 8348 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8349 | |
8350 | if (update_gll) | |
44702360 | 8351 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8352 | } |
8353 | ||
9b70b993 | 8354 | static void |
a6d9a66e | 8355 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8356 | int tempflag, const char *cond_string, |
c0a91b2b | 8357 | const struct breakpoint_ops *ops) |
c906108c | 8358 | { |
b270e6f9 | 8359 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8360 | |
b270e6f9 | 8361 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8362 | |
8363 | c->forked_inferior_pid = null_ptid; | |
8364 | ||
b270e6f9 | 8365 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8366 | } |
8367 | ||
fe798b75 JB |
8368 | /* Exec catchpoints. */ |
8369 | ||
b4d90040 | 8370 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8371 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8372 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8373 | ||
c1fc2657 | 8374 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8375 | { |
c1fc2657 | 8376 | ~exec_catchpoint () override; |
b4d90040 PA |
8377 | |
8378 | /* Filename of a program whose exec triggered this catchpoint. | |
8379 | This field is only valid immediately after this catchpoint has | |
8380 | triggered. */ | |
8381 | char *exec_pathname; | |
8382 | }; | |
8383 | ||
c1fc2657 | 8384 | /* Exec catchpoint destructor. */ |
b4d90040 | 8385 | |
c1fc2657 | 8386 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8387 | { |
c1fc2657 | 8388 | xfree (this->exec_pathname); |
b4d90040 PA |
8389 | } |
8390 | ||
77b06cd7 TJB |
8391 | static int |
8392 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8393 | { |
dfd4cc63 | 8394 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8395 | } |
c906108c | 8396 | |
fe798b75 | 8397 | static int |
73971819 | 8398 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8399 | { |
dfd4cc63 | 8400 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8401 | } |
c906108c | 8402 | |
fe798b75 | 8403 | static int |
f1310107 | 8404 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8405 | struct address_space *aspace, CORE_ADDR bp_addr, |
8406 | const struct target_waitstatus *ws) | |
fe798b75 | 8407 | { |
b4d90040 PA |
8408 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8409 | ||
f90263c1 TT |
8410 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8411 | return 0; | |
8412 | ||
8413 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8414 | return 1; | |
fe798b75 | 8415 | } |
c906108c | 8416 | |
fe798b75 | 8417 | static enum print_stop_action |
348d480f | 8418 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8419 | { |
36dfb11c | 8420 | struct ui_out *uiout = current_uiout; |
348d480f | 8421 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8422 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8423 | ||
fe798b75 | 8424 | annotate_catchpoint (b->number); |
f303dbd6 | 8425 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8426 | if (b->disposition == disp_del) |
112e8700 | 8427 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8428 | else |
112e8700 SM |
8429 | uiout->text ("Catchpoint "); |
8430 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8431 | { |
112e8700 SM |
8432 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8433 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8434 | } |
112e8700 SM |
8435 | uiout->field_int ("bkptno", b->number); |
8436 | uiout->text (" (exec'd "); | |
8437 | uiout->field_string ("new-exec", c->exec_pathname); | |
8438 | uiout->text ("), "); | |
36dfb11c | 8439 | |
fe798b75 | 8440 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8441 | } |
8442 | ||
fe798b75 | 8443 | static void |
a6d9a66e | 8444 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8445 | { |
b4d90040 | 8446 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8447 | struct value_print_options opts; |
79a45e25 | 8448 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8449 | |
8450 | get_user_print_options (&opts); | |
8451 | ||
8452 | /* Field 4, the address, is omitted (which makes the columns | |
8453 | not line up too nicely with the headers, but the effect | |
8454 | is relatively readable). */ | |
8455 | if (opts.addressprint) | |
112e8700 | 8456 | uiout->field_skip ("addr"); |
fe798b75 | 8457 | annotate_field (5); |
112e8700 | 8458 | uiout->text ("exec"); |
b4d90040 | 8459 | if (c->exec_pathname != NULL) |
fe798b75 | 8460 | { |
112e8700 SM |
8461 | uiout->text (", program \""); |
8462 | uiout->field_string ("what", c->exec_pathname); | |
8463 | uiout->text ("\" "); | |
fe798b75 | 8464 | } |
8ac3646f | 8465 | |
112e8700 SM |
8466 | if (uiout->is_mi_like_p ()) |
8467 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8468 | } |
8469 | ||
8470 | static void | |
8471 | print_mention_catch_exec (struct breakpoint *b) | |
8472 | { | |
8473 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8474 | } | |
8475 | ||
6149aea9 PA |
8476 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8477 | catchpoints. */ | |
8478 | ||
8479 | static void | |
8480 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8481 | { | |
8482 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8483 | print_recreate_thread (b, fp); |
6149aea9 PA |
8484 | } |
8485 | ||
2060206e | 8486 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8487 | |
c906108c | 8488 | static int |
fba45db2 | 8489 | hw_breakpoint_used_count (void) |
c906108c | 8490 | { |
c906108c | 8491 | int i = 0; |
f1310107 TJB |
8492 | struct breakpoint *b; |
8493 | struct bp_location *bl; | |
c906108c SS |
8494 | |
8495 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8496 | { |
d6b74ac4 | 8497 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8498 | for (bl = b->loc; bl; bl = bl->next) |
8499 | { | |
8500 | /* Special types of hardware breakpoints may use more than | |
8501 | one register. */ | |
348d480f | 8502 | i += b->ops->resources_needed (bl); |
f1310107 | 8503 | } |
c5aa993b | 8504 | } |
c906108c SS |
8505 | |
8506 | return i; | |
8507 | } | |
8508 | ||
a1398e0c PA |
8509 | /* Returns the resources B would use if it were a hardware |
8510 | watchpoint. */ | |
8511 | ||
c906108c | 8512 | static int |
a1398e0c | 8513 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8514 | { |
c906108c | 8515 | int i = 0; |
e09342b5 | 8516 | struct bp_location *bl; |
c906108c | 8517 | |
a1398e0c PA |
8518 | if (!breakpoint_enabled (b)) |
8519 | return 0; | |
8520 | ||
8521 | for (bl = b->loc; bl; bl = bl->next) | |
8522 | { | |
8523 | /* Special types of hardware watchpoints may use more than | |
8524 | one register. */ | |
8525 | i += b->ops->resources_needed (bl); | |
8526 | } | |
8527 | ||
8528 | return i; | |
8529 | } | |
8530 | ||
8531 | /* Returns the sum the used resources of all hardware watchpoints of | |
8532 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8533 | the sum of the used resources of all hardware watchpoints of other | |
8534 | types _not_ TYPE. */ | |
8535 | ||
8536 | static int | |
8537 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8538 | enum bptype type, int *other_type_used) | |
8539 | { | |
8540 | int i = 0; | |
8541 | struct breakpoint *b; | |
8542 | ||
c906108c SS |
8543 | *other_type_used = 0; |
8544 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8545 | { |
a1398e0c PA |
8546 | if (b == except) |
8547 | continue; | |
e09342b5 TJB |
8548 | if (!breakpoint_enabled (b)) |
8549 | continue; | |
8550 | ||
a1398e0c PA |
8551 | if (b->type == type) |
8552 | i += hw_watchpoint_use_count (b); | |
8553 | else if (is_hardware_watchpoint (b)) | |
8554 | *other_type_used = 1; | |
e09342b5 TJB |
8555 | } |
8556 | ||
c906108c SS |
8557 | return i; |
8558 | } | |
8559 | ||
c906108c | 8560 | void |
fba45db2 | 8561 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8562 | { |
c5aa993b | 8563 | struct breakpoint *b; |
c906108c SS |
8564 | |
8565 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8566 | { |
cc60f2e3 | 8567 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8568 | { |
b5de0fa7 | 8569 | b->enable_state = bp_call_disabled; |
44702360 | 8570 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8571 | } |
8572 | } | |
c906108c SS |
8573 | } |
8574 | ||
8575 | void | |
fba45db2 | 8576 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8577 | { |
c5aa993b | 8578 | struct breakpoint *b; |
c906108c SS |
8579 | |
8580 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8581 | { |
cc60f2e3 | 8582 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8583 | { |
b5de0fa7 | 8584 | b->enable_state = bp_enabled; |
44702360 | 8585 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8586 | } |
8587 | } | |
c906108c SS |
8588 | } |
8589 | ||
8bea4e01 UW |
8590 | void |
8591 | disable_breakpoints_before_startup (void) | |
8592 | { | |
6c95b8df | 8593 | current_program_space->executing_startup = 1; |
44702360 | 8594 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8595 | } |
8596 | ||
8597 | void | |
8598 | enable_breakpoints_after_startup (void) | |
8599 | { | |
6c95b8df | 8600 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8601 | breakpoint_re_set (); |
8bea4e01 UW |
8602 | } |
8603 | ||
7c16b83e PA |
8604 | /* Create a new single-step breakpoint for thread THREAD, with no |
8605 | locations. */ | |
c906108c | 8606 | |
7c16b83e PA |
8607 | static struct breakpoint * |
8608 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8609 | { | |
b270e6f9 | 8610 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8611 | |
b270e6f9 | 8612 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8613 | &momentary_breakpoint_ops); |
8614 | ||
8615 | b->disposition = disp_donttouch; | |
8616 | b->frame_id = null_frame_id; | |
8617 | ||
8618 | b->thread = thread; | |
8619 | gdb_assert (b->thread != 0); | |
8620 | ||
b270e6f9 | 8621 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8622 | } |
8623 | ||
8624 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8625 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8626 | frame. */ | |
c906108c SS |
8627 | |
8628 | struct breakpoint * | |
a6d9a66e UW |
8629 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8630 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8631 | { |
52f0bd74 | 8632 | struct breakpoint *b; |
edb3359d | 8633 | |
193facb3 JK |
8634 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8635 | tail-called one. */ | |
8636 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8637 | |
06edf0c0 | 8638 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8639 | b->enable_state = bp_enabled; |
8640 | b->disposition = disp_donttouch; | |
818dd999 | 8641 | b->frame_id = frame_id; |
c906108c | 8642 | |
4a64f543 MS |
8643 | /* If we're debugging a multi-threaded program, then we want |
8644 | momentary breakpoints to be active in only a single thread of | |
8645 | control. */ | |
39f77062 | 8646 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 8647 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
c906108c | 8648 | |
44702360 | 8649 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8650 | |
c906108c SS |
8651 | return b; |
8652 | } | |
611c83ae | 8653 | |
06edf0c0 | 8654 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8655 | The new breakpoint will have type TYPE, use OPS as its |
8656 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8657 | |
06edf0c0 PA |
8658 | static struct breakpoint * |
8659 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8660 | enum bptype type, | |
a1aa2221 LM |
8661 | const struct breakpoint_ops *ops, |
8662 | int loc_enabled) | |
e58b0e63 PA |
8663 | { |
8664 | struct breakpoint *copy; | |
8665 | ||
06edf0c0 | 8666 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8667 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8668 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8669 | |
a6d9a66e | 8670 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8671 | copy->loc->requested_address = orig->loc->requested_address; |
8672 | copy->loc->address = orig->loc->address; | |
8673 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8674 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8675 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8676 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8677 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8678 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8679 | copy->frame_id = orig->frame_id; |
8680 | copy->thread = orig->thread; | |
6c95b8df | 8681 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8682 | |
8683 | copy->enable_state = bp_enabled; | |
8684 | copy->disposition = disp_donttouch; | |
8685 | copy->number = internal_breakpoint_number--; | |
8686 | ||
44702360 | 8687 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8688 | return copy; |
8689 | } | |
8690 | ||
06edf0c0 PA |
8691 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8692 | ORIG is NULL. */ | |
8693 | ||
8694 | struct breakpoint * | |
8695 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8696 | { | |
8697 | /* If there's nothing to clone, then return nothing. */ | |
8698 | if (orig == NULL) | |
8699 | return NULL; | |
8700 | ||
a1aa2221 | 8701 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8702 | } |
8703 | ||
611c83ae | 8704 | struct breakpoint * |
a6d9a66e UW |
8705 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8706 | enum bptype type) | |
611c83ae PA |
8707 | { |
8708 | struct symtab_and_line sal; | |
8709 | ||
8710 | sal = find_pc_line (pc, 0); | |
8711 | sal.pc = pc; | |
8712 | sal.section = find_pc_overlay (pc); | |
8713 | sal.explicit_pc = 1; | |
8714 | ||
a6d9a66e | 8715 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8716 | } |
c906108c | 8717 | \f |
c5aa993b | 8718 | |
c906108c SS |
8719 | /* Tell the user we have just set a breakpoint B. */ |
8720 | ||
8721 | static void | |
fba45db2 | 8722 | mention (struct breakpoint *b) |
c906108c | 8723 | { |
348d480f | 8724 | b->ops->print_mention (b); |
112e8700 | 8725 | if (current_uiout->is_mi_like_p ()) |
fb40c209 | 8726 | return; |
c906108c SS |
8727 | printf_filtered ("\n"); |
8728 | } | |
c906108c | 8729 | \f |
c5aa993b | 8730 | |
1a853c52 PA |
8731 | static int bp_loc_is_permanent (struct bp_location *loc); |
8732 | ||
0d381245 | 8733 | static struct bp_location * |
39d61571 | 8734 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8735 | const struct symtab_and_line *sal) |
8736 | { | |
8737 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8738 | CORE_ADDR adjusted_address; |
8739 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8740 | ||
8741 | if (loc_gdbarch == NULL) | |
8742 | loc_gdbarch = b->gdbarch; | |
8743 | ||
8744 | /* Adjust the breakpoint's address prior to allocating a location. | |
8745 | Once we call allocate_bp_location(), that mostly uninitialized | |
8746 | location will be placed on the location chain. Adjustment of the | |
8747 | breakpoint may cause target_read_memory() to be called and we do | |
8748 | not want its scan of the location chain to find a breakpoint and | |
8749 | location that's only been partially initialized. */ | |
8750 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8751 | sal->pc, b->type); | |
0d381245 | 8752 | |
d30113d4 | 8753 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8754 | loc = allocate_bp_location (b); |
d30113d4 JK |
8755 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8756 | tmp = &((*tmp)->next)) | |
0d381245 | 8757 | ; |
d30113d4 | 8758 | loc->next = *tmp; |
0d381245 | 8759 | *tmp = loc; |
3742cc8b | 8760 | |
0d381245 | 8761 | loc->requested_address = sal->pc; |
3742cc8b | 8762 | loc->address = adjusted_address; |
6c95b8df | 8763 | loc->pspace = sal->pspace; |
729662a5 TT |
8764 | loc->probe.probe = sal->probe; |
8765 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 8766 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8767 | loc->section = sal->section; |
3742cc8b | 8768 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8769 | loc->line_number = sal->line; |
2f202fde | 8770 | loc->symtab = sal->symtab; |
f8eba3c6 | 8771 | |
0e30163f JK |
8772 | set_breakpoint_location_function (loc, |
8773 | sal->explicit_pc || sal->explicit_line); | |
1a853c52 | 8774 | |
6ae88661 LM |
8775 | /* While by definition, permanent breakpoints are already present in the |
8776 | code, we don't mark the location as inserted. Normally one would expect | |
8777 | that GDB could rely on that breakpoint instruction to stop the program, | |
8778 | thus removing the need to insert its own breakpoint, except that executing | |
8779 | the breakpoint instruction can kill the target instead of reporting a | |
8780 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8781 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8782 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8783 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8784 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8785 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8786 | it manually increments the PC, thus avoiding executing the breakpoint | |
8787 | instruction.) */ | |
1a853c52 | 8788 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8789 | loc->permanent = 1; |
1a853c52 | 8790 | |
0d381245 VP |
8791 | return loc; |
8792 | } | |
514f746b AR |
8793 | \f |
8794 | ||
1cf4d951 | 8795 | /* See breakpoint.h. */ |
514f746b | 8796 | |
1cf4d951 PA |
8797 | int |
8798 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8799 | { |
8800 | int len; | |
8801 | CORE_ADDR addr; | |
1afeeb75 | 8802 | const gdb_byte *bpoint; |
514f746b AR |
8803 | gdb_byte *target_mem; |
8804 | ||
1cf4d951 PA |
8805 | addr = address; |
8806 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8807 | ||
8808 | /* Software breakpoints unsupported? */ | |
8809 | if (bpoint == NULL) | |
8810 | return 0; | |
8811 | ||
224c3ddb | 8812 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8813 | |
8814 | /* Enable the automatic memory restoration from breakpoints while | |
8815 | we read the memory. Otherwise we could say about our temporary | |
8816 | breakpoints they are permanent. */ | |
cb85b21b TT |
8817 | scoped_restore restore_memory |
8818 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8819 | |
8820 | if (target_read_memory (address, target_mem, len) == 0 | |
8821 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8822 | return 1; |
1cf4d951 | 8823 | |
cb85b21b | 8824 | return 0; |
1cf4d951 PA |
8825 | } |
8826 | ||
8827 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8828 | return 0 otherwise. */ | |
8829 | ||
8830 | static int | |
8831 | bp_loc_is_permanent (struct bp_location *loc) | |
8832 | { | |
514f746b AR |
8833 | gdb_assert (loc != NULL); |
8834 | ||
244558af LM |
8835 | /* If we have a catchpoint or a watchpoint, just return 0. We should not |
8836 | attempt to read from the addresses the locations of these breakpoint types | |
8837 | point to. program_breakpoint_here_p, below, will attempt to read | |
8838 | memory. */ | |
8839 | if (!breakpoint_address_is_meaningful (loc->owner)) | |
8840 | return 0; | |
8841 | ||
5ed8105e | 8842 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8843 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8844 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8845 | } |
8846 | ||
e7e0cddf SS |
8847 | /* Build a command list for the dprintf corresponding to the current |
8848 | settings of the dprintf style options. */ | |
8849 | ||
8850 | static void | |
8851 | update_dprintf_command_list (struct breakpoint *b) | |
8852 | { | |
8853 | char *dprintf_args = b->extra_string; | |
8854 | char *printf_line = NULL; | |
8855 | ||
8856 | if (!dprintf_args) | |
8857 | return; | |
8858 | ||
8859 | dprintf_args = skip_spaces (dprintf_args); | |
8860 | ||
8861 | /* Allow a comma, as it may have terminated a location, but don't | |
8862 | insist on it. */ | |
8863 | if (*dprintf_args == ',') | |
8864 | ++dprintf_args; | |
8865 | dprintf_args = skip_spaces (dprintf_args); | |
8866 | ||
8867 | if (*dprintf_args != '"') | |
8868 | error (_("Bad format string, missing '\"'.")); | |
8869 | ||
d3ce09f5 | 8870 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8871 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8872 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8873 | { |
8874 | if (!dprintf_function) | |
8875 | error (_("No function supplied for dprintf call")); | |
8876 | ||
8877 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8878 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8879 | dprintf_function, | |
8880 | dprintf_channel, | |
8881 | dprintf_args); | |
8882 | else | |
8883 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8884 | dprintf_function, | |
8885 | dprintf_args); | |
8886 | } | |
d3ce09f5 SS |
8887 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8888 | { | |
8889 | if (target_can_run_breakpoint_commands ()) | |
8890 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8891 | else | |
8892 | { | |
8893 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8894 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8895 | } | |
8896 | } | |
e7e0cddf SS |
8897 | else |
8898 | internal_error (__FILE__, __LINE__, | |
8899 | _("Invalid dprintf style.")); | |
8900 | ||
f28045c2 | 8901 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 8902 | /* Manufacture a printf sequence. */ |
f28045c2 | 8903 | { |
8d749320 | 8904 | struct command_line *printf_cmd_line = XNEW (struct command_line); |
e7e0cddf | 8905 | |
f28045c2 YQ |
8906 | printf_cmd_line->control_type = simple_control; |
8907 | printf_cmd_line->body_count = 0; | |
8908 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 8909 | printf_cmd_line->next = NULL; |
f28045c2 | 8910 | printf_cmd_line->line = printf_line; |
e7e0cddf | 8911 | |
93921405 | 8912 | breakpoint_set_commands (b, command_line_up (printf_cmd_line)); |
f28045c2 | 8913 | } |
e7e0cddf SS |
8914 | } |
8915 | ||
8916 | /* Update all dprintf commands, making their command lists reflect | |
8917 | current style settings. */ | |
8918 | ||
8919 | static void | |
8920 | update_dprintf_commands (char *args, int from_tty, | |
8921 | struct cmd_list_element *c) | |
8922 | { | |
8923 | struct breakpoint *b; | |
8924 | ||
8925 | ALL_BREAKPOINTS (b) | |
8926 | { | |
8927 | if (b->type == bp_dprintf) | |
8928 | update_dprintf_command_list (b); | |
8929 | } | |
8930 | } | |
c3f6f71d | 8931 | |
f00aae0f KS |
8932 | /* Create a breakpoint with SAL as location. Use LOCATION |
8933 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8934 | as condition expression. If LOCATION is NULL then create an |
8935 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8936 | |
8937 | static void | |
d9b3f62e | 8938 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8939 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8940 | event_location_up &&location, |
e1e01040 PA |
8941 | gdb::unique_xmalloc_ptr<char> filter, |
8942 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8943 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8944 | enum bptype type, enum bpdisp disposition, |
8945 | int thread, int task, int ignore_count, | |
c0a91b2b | 8946 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8947 | int enabled, int internal, unsigned flags, |
8948 | int display_canonical) | |
018d34a4 | 8949 | { |
0d381245 | 8950 | int i; |
018d34a4 VP |
8951 | |
8952 | if (type == bp_hardware_breakpoint) | |
8953 | { | |
fbbd034e AS |
8954 | int target_resources_ok; |
8955 | ||
8956 | i = hw_breakpoint_used_count (); | |
8957 | target_resources_ok = | |
8958 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8959 | i + 1, 0); |
8960 | if (target_resources_ok == 0) | |
8961 | error (_("No hardware breakpoint support in the target.")); | |
8962 | else if (target_resources_ok < 0) | |
8963 | error (_("Hardware breakpoints used exceeds limit.")); | |
8964 | } | |
8965 | ||
6c5b2ebe | 8966 | gdb_assert (!sals.empty ()); |
6c95b8df | 8967 | |
6c5b2ebe | 8968 | for (const auto &sal : sals) |
0d381245 | 8969 | { |
0d381245 VP |
8970 | struct bp_location *loc; |
8971 | ||
8972 | if (from_tty) | |
5af949e3 UW |
8973 | { |
8974 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8975 | if (!loc_gdbarch) | |
8976 | loc_gdbarch = gdbarch; | |
8977 | ||
8978 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8979 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8980 | } |
0d381245 | 8981 | |
6c5b2ebe | 8982 | if (&sal == &sals[0]) |
0d381245 | 8983 | { |
d9b3f62e | 8984 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8985 | b->thread = thread; |
4a306c9a | 8986 | b->task = task; |
855a6e68 | 8987 | |
e1e01040 PA |
8988 | b->cond_string = cond_string.release (); |
8989 | b->extra_string = extra_string.release (); | |
0d381245 | 8990 | b->ignore_count = ignore_count; |
41447f92 | 8991 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8992 | b->disposition = disposition; |
6c95b8df | 8993 | |
44f238bb PA |
8994 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8995 | b->loc->inserted = 1; | |
8996 | ||
0fb4aa4b PA |
8997 | if (type == bp_static_tracepoint) |
8998 | { | |
d9b3f62e | 8999 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9000 | struct static_tracepoint_marker marker; |
9001 | ||
983af33b | 9002 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9003 | { |
9004 | /* We already know the marker exists, otherwise, we | |
9005 | wouldn't see a sal for it. */ | |
d28cd78a TT |
9006 | const char *p |
9007 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 9008 | const char *endp; |
0fb4aa4b | 9009 | char *marker_str; |
0fb4aa4b | 9010 | |
f1735a53 | 9011 | p = skip_spaces (p); |
0fb4aa4b | 9012 | |
f1735a53 | 9013 | endp = skip_to_space (p); |
0fb4aa4b PA |
9014 | |
9015 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9016 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9017 | |
3e43a32a MS |
9018 | printf_filtered (_("Probed static tracepoint " |
9019 | "marker \"%s\"\n"), | |
d9b3f62e | 9020 | t->static_trace_marker_id); |
0fb4aa4b PA |
9021 | } |
9022 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9023 | { | |
d9b3f62e | 9024 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9025 | release_static_tracepoint_marker (&marker); |
9026 | ||
3e43a32a MS |
9027 | printf_filtered (_("Probed static tracepoint " |
9028 | "marker \"%s\"\n"), | |
d9b3f62e | 9029 | t->static_trace_marker_id); |
0fb4aa4b PA |
9030 | } |
9031 | else | |
3e43a32a MS |
9032 | warning (_("Couldn't determine the static " |
9033 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9034 | } |
9035 | ||
0d381245 VP |
9036 | loc = b->loc; |
9037 | } | |
9038 | else | |
018d34a4 | 9039 | { |
39d61571 | 9040 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9041 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9042 | loc->inserted = 1; | |
0d381245 VP |
9043 | } |
9044 | ||
9045 | if (b->cond_string) | |
9046 | { | |
bbc13ae3 KS |
9047 | const char *arg = b->cond_string; |
9048 | ||
1bb9788d TT |
9049 | loc->cond = parse_exp_1 (&arg, loc->address, |
9050 | block_for_pc (loc->address), 0); | |
0d381245 | 9051 | if (*arg) |
588ae58c | 9052 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9053 | } |
e7e0cddf SS |
9054 | |
9055 | /* Dynamic printf requires and uses additional arguments on the | |
9056 | command line, otherwise it's an error. */ | |
9057 | if (type == bp_dprintf) | |
9058 | { | |
9059 | if (b->extra_string) | |
9060 | update_dprintf_command_list (b); | |
9061 | else | |
9062 | error (_("Format string required")); | |
9063 | } | |
9064 | else if (b->extra_string) | |
588ae58c | 9065 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9066 | } |
018d34a4 | 9067 | |
56435ebe | 9068 | b->display_canonical = display_canonical; |
f00aae0f | 9069 | if (location != NULL) |
d28cd78a | 9070 | b->location = std::move (location); |
018d34a4 | 9071 | else |
d28cd78a | 9072 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 9073 | b->filter = filter.release (); |
d9b3f62e | 9074 | } |
018d34a4 | 9075 | |
d9b3f62e PA |
9076 | static void |
9077 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 9078 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 9079 | event_location_up &&location, |
e1e01040 PA |
9080 | gdb::unique_xmalloc_ptr<char> filter, |
9081 | gdb::unique_xmalloc_ptr<char> cond_string, | |
9082 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
9083 | enum bptype type, enum bpdisp disposition, |
9084 | int thread, int task, int ignore_count, | |
c0a91b2b | 9085 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9086 | int enabled, int internal, unsigned flags, |
9087 | int display_canonical) | |
d9b3f62e | 9088 | { |
a5e364af | 9089 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 9090 | |
a5e364af | 9091 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 9092 | sals, std::move (location), |
e1e01040 PA |
9093 | std::move (filter), |
9094 | std::move (cond_string), | |
9095 | std::move (extra_string), | |
d9b3f62e PA |
9096 | type, disposition, |
9097 | thread, task, ignore_count, | |
9098 | ops, from_tty, | |
44f238bb PA |
9099 | enabled, internal, flags, |
9100 | display_canonical); | |
d9b3f62e | 9101 | |
b270e6f9 | 9102 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9103 | } |
9104 | ||
9105 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9106 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9107 | value. COND_STRING, if not NULL, specified the condition to be | |
9108 | used for all breakpoints. Essentially the only case where | |
9109 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9110 | function. In that case, it's still not possible to specify | |
9111 | separate conditions for different overloaded functions, so | |
9112 | we take just a single condition string. | |
9113 | ||
c3f6f71d | 9114 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9115 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9116 | array contents). If the function fails (error() is called), the |
9117 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9118 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9119 | |
9120 | static void | |
8cdf0e15 | 9121 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9122 | struct linespec_result *canonical, |
e1e01040 PA |
9123 | gdb::unique_xmalloc_ptr<char> cond_string, |
9124 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9125 | enum bptype type, enum bpdisp disposition, |
9126 | int thread, int task, int ignore_count, | |
c0a91b2b | 9127 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9128 | int enabled, int internal, unsigned flags) |
c906108c | 9129 | { |
f8eba3c6 | 9130 | if (canonical->pre_expanded) |
6c5b2ebe | 9131 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9132 | |
6c5b2ebe | 9133 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9134 | { |
f00aae0f | 9135 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9136 | 'break', without arguments. */ |
ffc2605c | 9137 | event_location_up location |
f00aae0f | 9138 | = (canonical->location != NULL |
8e9e35b1 | 9139 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9140 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9141 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9142 | |
6c5b2ebe | 9143 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9144 | std::move (location), |
e1e01040 PA |
9145 | std::move (filter_string), |
9146 | std::move (cond_string), | |
9147 | std::move (extra_string), | |
e7e0cddf | 9148 | type, disposition, |
84f4c1fe | 9149 | thread, task, ignore_count, ops, |
44f238bb | 9150 | from_tty, enabled, internal, flags, |
56435ebe | 9151 | canonical->special_display); |
c3f6f71d | 9152 | } |
c3f6f71d | 9153 | } |
c906108c | 9154 | |
f00aae0f | 9155 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9156 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9157 | addresses found. LOCATION points to the end of the SAL (for |
9158 | linespec locations). | |
9998af43 TJB |
9159 | |
9160 | The array and the line spec strings are allocated on the heap, it is | |
9161 | the caller's responsibility to free them. */ | |
c906108c | 9162 | |
b9362cc7 | 9163 | static void |
f00aae0f | 9164 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 9165 | struct linespec_result *canonical) |
c3f6f71d | 9166 | { |
f00aae0f KS |
9167 | struct symtab_and_line cursal; |
9168 | ||
9169 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9170 | { | |
9171 | const char *address = get_linespec_location (location); | |
9172 | ||
9173 | if (address == NULL) | |
9174 | { | |
9175 | /* The last displayed codepoint, if it's valid, is our default | |
9176 | breakpoint address. */ | |
9177 | if (last_displayed_sal_is_valid ()) | |
9178 | { | |
f00aae0f KS |
9179 | /* Set sal's pspace, pc, symtab, and line to the values |
9180 | corresponding to the last call to print_frame_info. | |
9181 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9182 | as the breakpoint line number is inappropriate otherwise. | |
9183 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9184 | symtab_and_line sal = get_last_displayed_sal (); |
9185 | CORE_ADDR pc = sal.pc; | |
9186 | ||
f00aae0f KS |
9187 | sal = find_pc_line (pc, 0); |
9188 | ||
9189 | /* "break" without arguments is equivalent to "break *PC" | |
9190 | where PC is the last displayed codepoint's address. So | |
9191 | make sure to set sal.explicit_pc to prevent GDB from | |
9192 | trying to expand the list of sals to include all other | |
9193 | instances with the same symtab and line. */ | |
9194 | sal.pc = pc; | |
9195 | sal.explicit_pc = 1; | |
9196 | ||
6c5b2ebe PA |
9197 | struct linespec_sals lsal; |
9198 | lsal.sals = {sal}; | |
f00aae0f KS |
9199 | lsal.canonical = NULL; |
9200 | ||
6c5b2ebe | 9201 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9202 | return; |
9203 | } | |
9204 | else | |
9205 | error (_("No default breakpoint address now.")); | |
c906108c | 9206 | } |
c906108c | 9207 | } |
f00aae0f KS |
9208 | |
9209 | /* Force almost all breakpoints to be in terms of the | |
9210 | current_source_symtab (which is decode_line_1's default). | |
9211 | This should produce the results we want almost all of the | |
9212 | time while leaving default_breakpoint_* alone. | |
9213 | ||
9214 | ObjC: However, don't match an Objective-C method name which | |
9215 | may have a '+' or '-' succeeded by a '['. */ | |
9216 | cursal = get_current_source_symtab_and_line (); | |
9217 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9218 | { |
f00aae0f | 9219 | const char *address = NULL; |
cc80f267 | 9220 | |
f00aae0f KS |
9221 | if (event_location_type (location) == LINESPEC_LOCATION) |
9222 | address = get_linespec_location (location); | |
cc80f267 | 9223 | |
f00aae0f KS |
9224 | if (!cursal.symtab |
9225 | || (address != NULL | |
9226 | && strchr ("+-", address[0]) != NULL | |
9227 | && address[1] != '[')) | |
9228 | { | |
c2f4122d | 9229 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9230 | get_last_displayed_symtab (), |
9231 | get_last_displayed_line (), | |
9232 | canonical, NULL, NULL); | |
9233 | return; | |
9234 | } | |
c906108c | 9235 | } |
f00aae0f | 9236 | |
c2f4122d | 9237 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9238 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9239 | } |
c906108c | 9240 | |
c906108c | 9241 | |
c3f6f71d | 9242 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9243 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9244 | |
b9362cc7 | 9245 | static void |
6c5b2ebe | 9246 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9247 | { |
6c5b2ebe PA |
9248 | for (auto &sal : sals) |
9249 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9250 | } |
9251 | ||
7a697b8d SS |
9252 | /* Fast tracepoints may have restrictions on valid locations. For |
9253 | instance, a fast tracepoint using a jump instead of a trap will | |
9254 | likely have to overwrite more bytes than a trap would, and so can | |
9255 | only be placed where the instruction is longer than the jump, or a | |
9256 | multi-instruction sequence does not have a jump into the middle of | |
9257 | it, etc. */ | |
9258 | ||
9259 | static void | |
9260 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9261 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9262 | { |
6c5b2ebe | 9263 | int rslt; |
7a697b8d SS |
9264 | char *msg; |
9265 | struct cleanup *old_chain; | |
9266 | ||
6c5b2ebe | 9267 | for (const auto &sal : sals) |
7a697b8d | 9268 | { |
f8eba3c6 TT |
9269 | struct gdbarch *sarch; |
9270 | ||
6c5b2ebe | 9271 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9272 | /* We fall back to GDBARCH if there is no architecture |
9273 | associated with SAL. */ | |
9274 | if (sarch == NULL) | |
9275 | sarch = gdbarch; | |
6c5b2ebe | 9276 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg); |
7a697b8d SS |
9277 | old_chain = make_cleanup (xfree, msg); |
9278 | ||
9279 | if (!rslt) | |
53c3572a | 9280 | error (_("May not have a fast tracepoint at %s%s"), |
6c5b2ebe | 9281 | paddress (sarch, sal.pc), (msg ? msg : "")); |
7a697b8d SS |
9282 | |
9283 | do_cleanups (old_chain); | |
9284 | } | |
9285 | } | |
9286 | ||
018d34a4 VP |
9287 | /* Given TOK, a string specification of condition and thread, as |
9288 | accepted by the 'break' command, extract the condition | |
9289 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9290 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9291 | If no condition is found, *COND_STRING is set to NULL. |
9292 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9293 | |
9294 | static void | |
bbc13ae3 | 9295 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9296 | char **cond_string, int *thread, int *task, |
9297 | char **rest) | |
018d34a4 VP |
9298 | { |
9299 | *cond_string = NULL; | |
9300 | *thread = -1; | |
ed1d1739 KS |
9301 | *task = 0; |
9302 | *rest = NULL; | |
9303 | ||
018d34a4 VP |
9304 | while (tok && *tok) |
9305 | { | |
bbc13ae3 | 9306 | const char *end_tok; |
018d34a4 | 9307 | int toklen; |
bbc13ae3 KS |
9308 | const char *cond_start = NULL; |
9309 | const char *cond_end = NULL; | |
cc59ec59 | 9310 | |
f1735a53 | 9311 | tok = skip_spaces (tok); |
e7e0cddf SS |
9312 | |
9313 | if ((*tok == '"' || *tok == ',') && rest) | |
9314 | { | |
9315 | *rest = savestring (tok, strlen (tok)); | |
9316 | return; | |
9317 | } | |
9318 | ||
f1735a53 | 9319 | end_tok = skip_to_space (tok); |
d634f2de | 9320 | |
018d34a4 | 9321 | toklen = end_tok - tok; |
d634f2de | 9322 | |
018d34a4 VP |
9323 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9324 | { | |
9325 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9326 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9327 | cond_end = tok; |
d634f2de | 9328 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9329 | } |
9330 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9331 | { | |
5d5658a1 PA |
9332 | const char *tmptok; |
9333 | struct thread_info *thr; | |
d634f2de | 9334 | |
018d34a4 | 9335 | tok = end_tok + 1; |
5d5658a1 | 9336 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9337 | if (tok == tmptok) |
9338 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9339 | *thread = thr->global_num; |
bbc13ae3 | 9340 | tok = tmptok; |
018d34a4 | 9341 | } |
4a306c9a JB |
9342 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9343 | { | |
9344 | char *tmptok; | |
9345 | ||
9346 | tok = end_tok + 1; | |
bbc13ae3 | 9347 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9348 | if (tok == tmptok) |
9349 | error (_("Junk after task keyword.")); | |
9350 | if (!valid_task_id (*task)) | |
b6199126 | 9351 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9352 | tok = tmptok; |
4a306c9a | 9353 | } |
e7e0cddf SS |
9354 | else if (rest) |
9355 | { | |
9356 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9357 | return; |
e7e0cddf | 9358 | } |
018d34a4 VP |
9359 | else |
9360 | error (_("Junk at end of arguments.")); | |
9361 | } | |
9362 | } | |
9363 | ||
0fb4aa4b PA |
9364 | /* Decode a static tracepoint marker spec. */ |
9365 | ||
6c5b2ebe | 9366 | static std::vector<symtab_and_line> |
f00aae0f | 9367 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b PA |
9368 | { |
9369 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
0fb4aa4b | 9370 | struct cleanup *old_chain; |
f00aae0f KS |
9371 | const char *p = &(*arg_p)[3]; |
9372 | const char *endp; | |
0fb4aa4b PA |
9373 | char *marker_str; |
9374 | int i; | |
9375 | ||
f1735a53 | 9376 | p = skip_spaces (p); |
0fb4aa4b | 9377 | |
f1735a53 | 9378 | endp = skip_to_space (p); |
0fb4aa4b PA |
9379 | |
9380 | marker_str = savestring (p, endp - p); | |
9381 | old_chain = make_cleanup (xfree, marker_str); | |
9382 | ||
9383 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9384 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9385 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9386 | ||
6c5b2ebe PA |
9387 | std::vector<symtab_and_line> sals; |
9388 | sals.reserve (VEC_length(static_tracepoint_marker_p, markers)); | |
0fb4aa4b | 9389 | |
6c5b2ebe | 9390 | for (i = 0; i < VEC_length(static_tracepoint_marker_p, markers); i++) |
0fb4aa4b PA |
9391 | { |
9392 | struct static_tracepoint_marker *marker; | |
9393 | ||
9394 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9395 | ||
51abb421 | 9396 | symtab_and_line sal = find_pc_line (marker->address, 0); |
6c5b2ebe PA |
9397 | sal.pc = marker->address; |
9398 | sals.push_back (sal); | |
0fb4aa4b PA |
9399 | |
9400 | release_static_tracepoint_marker (marker); | |
9401 | } | |
9402 | ||
9403 | do_cleanups (old_chain); | |
9404 | ||
9405 | *arg_p = endp; | |
9406 | return sals; | |
9407 | } | |
9408 | ||
f00aae0f | 9409 | /* See breakpoint.h. */ |
0101ce28 | 9410 | |
8cdf0e15 VP |
9411 | int |
9412 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9413 | const struct event_location *location, |
9414 | const char *cond_string, | |
9415 | int thread, const char *extra_string, | |
f00aae0f | 9416 | int parse_extra, |
0fb4aa4b | 9417 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9418 | int ignore_count, |
9419 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9420 | const struct breakpoint_ops *ops, |
44f238bb PA |
9421 | int from_tty, int enabled, int internal, |
9422 | unsigned flags) | |
c3f6f71d | 9423 | { |
7efd8fc2 | 9424 | struct linespec_result canonical; |
80c99de1 | 9425 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9426 | int pending = 0; |
4a306c9a | 9427 | int task = 0; |
86b17b60 | 9428 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9429 | |
348d480f PA |
9430 | gdb_assert (ops != NULL); |
9431 | ||
f00aae0f KS |
9432 | /* If extra_string isn't useful, set it to NULL. */ |
9433 | if (extra_string != NULL && *extra_string == '\0') | |
9434 | extra_string = NULL; | |
9435 | ||
492d29ea | 9436 | TRY |
b78a6381 | 9437 | { |
f00aae0f | 9438 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9439 | } |
492d29ea | 9440 | CATCH (e, RETURN_MASK_ERROR) |
0101ce28 | 9441 | { |
492d29ea PA |
9442 | /* If caller is interested in rc value from parse, set |
9443 | value. */ | |
9444 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9445 | { |
05ff989b AC |
9446 | /* If pending breakpoint support is turned off, throw |
9447 | error. */ | |
fa8d40ab JJ |
9448 | |
9449 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9450 | throw_exception (e); |
9451 | ||
9452 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9453 | |
05ff989b AC |
9454 | /* If pending breakpoint support is auto query and the user |
9455 | selects no, then simply return the error code. */ | |
059fb39f | 9456 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9457 | && !nquery (_("Make %s pending on future shared library load? "), |
9458 | bptype_string (type_wanted))) | |
fd9b8c24 | 9459 | return 0; |
fa8d40ab | 9460 | |
05ff989b AC |
9461 | /* At this point, either the user was queried about setting |
9462 | a pending breakpoint and selected yes, or pending | |
9463 | breakpoint behavior is on and thus a pending breakpoint | |
9464 | is defaulted on behalf of the user. */ | |
f00aae0f | 9465 | pending = 1; |
0101ce28 | 9466 | } |
492d29ea PA |
9467 | else |
9468 | throw_exception (e); | |
0101ce28 | 9469 | } |
492d29ea PA |
9470 | END_CATCH |
9471 | ||
6c5b2ebe | 9472 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9473 | return 0; |
c3f6f71d | 9474 | |
c3f6f71d JM |
9475 | /* ----------------------------- SNIP ----------------------------- |
9476 | Anything added to the cleanup chain beyond this point is assumed | |
9477 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9478 | then the memory is not reclaimed. */ |
9479 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9480 | |
c3f6f71d JM |
9481 | /* Resolve all line numbers to PC's and verify that the addresses |
9482 | are ok for the target. */ | |
0101ce28 | 9483 | if (!pending) |
f8eba3c6 | 9484 | { |
6c5b2ebe PA |
9485 | for (auto &lsal : canonical.lsals) |
9486 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9487 | } |
c3f6f71d | 9488 | |
7a697b8d | 9489 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9490 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9491 | { |
6c5b2ebe PA |
9492 | for (const auto &lsal : canonical.lsals) |
9493 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9494 | } |
7a697b8d | 9495 | |
c3f6f71d JM |
9496 | /* Verify that condition can be parsed, before setting any |
9497 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9498 | breakpoint. */ |
0101ce28 | 9499 | if (!pending) |
c3f6f71d | 9500 | { |
e1e01040 PA |
9501 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9502 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9503 | ||
f00aae0f | 9504 | if (parse_extra) |
72b2ff0e | 9505 | { |
0878d0fa | 9506 | char *rest; |
e1e01040 | 9507 | char *cond; |
52d361e1 | 9508 | |
6c5b2ebe | 9509 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9510 | |
0878d0fa YQ |
9511 | /* Here we only parse 'arg' to separate condition |
9512 | from thread number, so parsing in context of first | |
9513 | sal is OK. When setting the breakpoint we'll | |
9514 | re-parse it in context of each sal. */ | |
9515 | ||
6c5b2ebe | 9516 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9517 | &cond, &thread, &task, &rest); |
9518 | cond_string_copy.reset (cond); | |
9519 | extra_string_copy.reset (rest); | |
72b2ff0e | 9520 | } |
2f069f6f | 9521 | else |
72b2ff0e | 9522 | { |
f00aae0f KS |
9523 | if (type_wanted != bp_dprintf |
9524 | && extra_string != NULL && *extra_string != '\0') | |
9525 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9526 | |
9527 | /* Create a private copy of condition string. */ | |
9528 | if (cond_string) | |
e1e01040 | 9529 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9530 | /* Create a private copy of any extra string. */ |
9531 | if (extra_string) | |
e1e01040 | 9532 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9533 | } |
0fb4aa4b | 9534 | |
52d361e1 | 9535 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9536 | std::move (cond_string_copy), |
9537 | std::move (extra_string_copy), | |
9538 | type_wanted, | |
d9b3f62e PA |
9539 | tempflag ? disp_del : disp_donttouch, |
9540 | thread, task, ignore_count, ops, | |
44f238bb | 9541 | from_tty, enabled, internal, flags); |
c906108c | 9542 | } |
0101ce28 JJ |
9543 | else |
9544 | { | |
a5e364af | 9545 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9546 | |
a5e364af | 9547 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9548 | b->location = copy_event_location (location); |
bfccc43c | 9549 | |
f00aae0f KS |
9550 | if (parse_extra) |
9551 | b->cond_string = NULL; | |
e12c7713 MK |
9552 | else |
9553 | { | |
9554 | /* Create a private copy of condition string. */ | |
e1e01040 | 9555 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9556 | b->thread = thread; |
e12c7713 | 9557 | } |
f00aae0f KS |
9558 | |
9559 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9560 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9561 | b->ignore_count = ignore_count; |
0101ce28 | 9562 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9563 | b->condition_not_parsed = 1; |
41447f92 | 9564 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9565 | if ((type_wanted != bp_breakpoint |
9566 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9567 | b->pspace = current_program_space; |
8bea4e01 | 9568 | |
b270e6f9 | 9569 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9570 | } |
9571 | ||
6c5b2ebe | 9572 | if (canonical.lsals.size () > 1) |
95a42b64 | 9573 | { |
3e43a32a MS |
9574 | warning (_("Multiple breakpoints were set.\nUse the " |
9575 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9576 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9577 | } |
9578 | ||
80c99de1 PA |
9579 | /* That's it. Discard the cleanups for data inserted into the |
9580 | breakpoint. */ | |
9581 | discard_cleanups (bkpt_chain); | |
217dc9e2 | 9582 | |
80c99de1 | 9583 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 9584 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9585 | |
9586 | return 1; | |
c3f6f71d | 9587 | } |
c906108c | 9588 | |
348d480f | 9589 | /* Set a breakpoint. |
72b2ff0e VP |
9590 | ARG is a string describing breakpoint address, |
9591 | condition, and thread. | |
9592 | FLAG specifies if a breakpoint is hardware on, | |
9593 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9594 | and BP_TEMPFLAG. */ | |
348d480f | 9595 | |
98deb0da | 9596 | static void |
f2fc3015 | 9597 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9598 | { |
72b2ff0e | 9599 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9600 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9601 | ? bp_hardware_breakpoint | |
9602 | : bp_breakpoint); | |
55aa24fb | 9603 | struct breakpoint_ops *ops; |
f00aae0f | 9604 | |
ffc2605c | 9605 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9606 | |
9607 | /* Matching breakpoints on probes. */ | |
5b56227b | 9608 | if (location != NULL |
ffc2605c | 9609 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9610 | ops = &bkpt_probe_breakpoint_ops; |
9611 | else | |
9612 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9613 | |
8cdf0e15 | 9614 | create_breakpoint (get_current_arch (), |
ffc2605c | 9615 | location.get (), |
f00aae0f | 9616 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9617 | tempflag, type_wanted, |
8cdf0e15 VP |
9618 | 0 /* Ignore count */, |
9619 | pending_break_support, | |
55aa24fb | 9620 | ops, |
8cdf0e15 | 9621 | from_tty, |
84f4c1fe | 9622 | 1 /* enabled */, |
44f238bb PA |
9623 | 0 /* internal */, |
9624 | 0); | |
c906108c SS |
9625 | } |
9626 | ||
c906108c SS |
9627 | /* Helper function for break_command_1 and disassemble_command. */ |
9628 | ||
9629 | void | |
fba45db2 | 9630 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9631 | { |
9632 | CORE_ADDR pc; | |
9633 | ||
9634 | if (sal->pc == 0 && sal->symtab != NULL) | |
9635 | { | |
9636 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9637 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9638 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9639 | sal->pc = pc; |
6a048695 | 9640 | |
4a64f543 MS |
9641 | /* If this SAL corresponds to a breakpoint inserted using a line |
9642 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9643 | if (sal->explicit_line) |
059acae7 | 9644 | skip_prologue_sal (sal); |
c906108c SS |
9645 | } |
9646 | ||
9647 | if (sal->section == 0 && sal->symtab != NULL) | |
9648 | { | |
346d1dfe | 9649 | const struct blockvector *bv; |
3977b71f | 9650 | const struct block *b; |
c5aa993b | 9651 | struct symbol *sym; |
c906108c | 9652 | |
43f3e411 DE |
9653 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9654 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9655 | if (bv != NULL) |
9656 | { | |
7f0df278 | 9657 | sym = block_linkage_function (b); |
c906108c SS |
9658 | if (sym != NULL) |
9659 | { | |
eb822aa6 DE |
9660 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9661 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9662 | sym); | |
c906108c SS |
9663 | } |
9664 | else | |
9665 | { | |
4a64f543 MS |
9666 | /* It really is worthwhile to have the section, so we'll |
9667 | just have to look harder. This case can be executed | |
9668 | if we have line numbers but no functions (as can | |
9669 | happen in assembly source). */ | |
c906108c | 9670 | |
5ed8105e | 9671 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9672 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9673 | |
5ed8105e | 9674 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9675 | if (msym.minsym) |
efd66ac6 | 9676 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9677 | } |
9678 | } | |
9679 | } | |
9680 | } | |
9681 | ||
9682 | void | |
fba45db2 | 9683 | break_command (char *arg, int from_tty) |
c906108c | 9684 | { |
db107f19 | 9685 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9686 | } |
9687 | ||
c906108c | 9688 | void |
fba45db2 | 9689 | tbreak_command (char *arg, int from_tty) |
c906108c | 9690 | { |
db107f19 | 9691 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9692 | } |
9693 | ||
c906108c | 9694 | static void |
fba45db2 | 9695 | hbreak_command (char *arg, int from_tty) |
c906108c | 9696 | { |
db107f19 | 9697 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9698 | } |
9699 | ||
9700 | static void | |
fba45db2 | 9701 | thbreak_command (char *arg, int from_tty) |
c906108c | 9702 | { |
db107f19 | 9703 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9704 | } |
9705 | ||
9706 | static void | |
fba45db2 | 9707 | stop_command (char *arg, int from_tty) |
c906108c | 9708 | { |
a3f17187 | 9709 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9710 | Usage: stop in <function | address>\n\ |
a3f17187 | 9711 | stop at <line>\n")); |
c906108c SS |
9712 | } |
9713 | ||
9714 | static void | |
4495129a | 9715 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9716 | { |
9717 | int badInput = 0; | |
9718 | ||
c5aa993b | 9719 | if (arg == (char *) NULL) |
c906108c SS |
9720 | badInput = 1; |
9721 | else if (*arg != '*') | |
9722 | { | |
4495129a | 9723 | const char *argptr = arg; |
c906108c SS |
9724 | int hasColon = 0; |
9725 | ||
4a64f543 | 9726 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9727 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9728 | function/method name. */ |
c906108c | 9729 | while (*argptr && !hasColon) |
c5aa993b JM |
9730 | { |
9731 | hasColon = (*argptr == ':'); | |
9732 | argptr++; | |
9733 | } | |
c906108c SS |
9734 | |
9735 | if (hasColon) | |
c5aa993b | 9736 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9737 | else |
c5aa993b | 9738 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9739 | } |
9740 | ||
9741 | if (badInput) | |
a3f17187 | 9742 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9743 | else |
db107f19 | 9744 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9745 | } |
9746 | ||
9747 | static void | |
4495129a | 9748 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9749 | { |
9750 | int badInput = 0; | |
9751 | ||
c5aa993b | 9752 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9753 | badInput = 1; |
9754 | else | |
9755 | { | |
4495129a | 9756 | const char *argptr = arg; |
c906108c SS |
9757 | int hasColon = 0; |
9758 | ||
4a64f543 MS |
9759 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9760 | it is probably a line number. */ | |
c906108c | 9761 | while (*argptr && !hasColon) |
c5aa993b JM |
9762 | { |
9763 | hasColon = (*argptr == ':'); | |
9764 | argptr++; | |
9765 | } | |
c906108c SS |
9766 | |
9767 | if (hasColon) | |
c5aa993b | 9768 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9769 | else |
c5aa993b | 9770 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9771 | } |
9772 | ||
9773 | if (badInput) | |
a3f17187 | 9774 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9775 | else |
db107f19 | 9776 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9777 | } |
9778 | ||
e7e0cddf SS |
9779 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9780 | with a prewired command list consisting of a single output command, | |
9781 | built from extra arguments supplied on the dprintf command | |
9782 | line. */ | |
9783 | ||
da821c7b | 9784 | static void |
f2fc3015 | 9785 | dprintf_command (char *arg_in, int from_tty) |
e7e0cddf | 9786 | { |
f2fc3015 | 9787 | const char *arg = arg_in; |
ffc2605c | 9788 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9789 | |
9790 | /* If non-NULL, ARG should have been advanced past the location; | |
9791 | the next character must be ','. */ | |
9792 | if (arg != NULL) | |
9793 | { | |
9794 | if (arg[0] != ',' || arg[1] == '\0') | |
9795 | error (_("Format string required")); | |
9796 | else | |
9797 | { | |
9798 | /* Skip the comma. */ | |
9799 | ++arg; | |
9800 | } | |
9801 | } | |
9802 | ||
e7e0cddf | 9803 | create_breakpoint (get_current_arch (), |
ffc2605c | 9804 | location.get (), |
f00aae0f | 9805 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9806 | 0, bp_dprintf, |
9807 | 0 /* Ignore count */, | |
9808 | pending_break_support, | |
9809 | &dprintf_breakpoint_ops, | |
9810 | from_tty, | |
9811 | 1 /* enabled */, | |
9812 | 0 /* internal */, | |
9813 | 0); | |
9814 | } | |
9815 | ||
d3ce09f5 SS |
9816 | static void |
9817 | agent_printf_command (char *arg, int from_tty) | |
9818 | { | |
9819 | error (_("May only run agent-printf on the target")); | |
9820 | } | |
9821 | ||
f1310107 TJB |
9822 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9823 | ranged breakpoints. */ | |
9824 | ||
9825 | static int | |
9826 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9827 | struct address_space *aspace, | |
09ac7c10 TT |
9828 | CORE_ADDR bp_addr, |
9829 | const struct target_waitstatus *ws) | |
f1310107 | 9830 | { |
09ac7c10 | 9831 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9832 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9833 | return 0; |
9834 | ||
f1310107 TJB |
9835 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9836 | bl->length, aspace, bp_addr); | |
9837 | } | |
9838 | ||
9839 | /* Implement the "resources_needed" breakpoint_ops method for | |
9840 | ranged breakpoints. */ | |
9841 | ||
9842 | static int | |
9843 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9844 | { | |
9845 | return target_ranged_break_num_registers (); | |
9846 | } | |
9847 | ||
9848 | /* Implement the "print_it" breakpoint_ops method for | |
9849 | ranged breakpoints. */ | |
9850 | ||
9851 | static enum print_stop_action | |
348d480f | 9852 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9853 | { |
348d480f | 9854 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9855 | struct bp_location *bl = b->loc; |
79a45e25 | 9856 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9857 | |
9858 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9859 | ||
9860 | /* Ranged breakpoints have only one location. */ | |
9861 | gdb_assert (bl && bl->next == NULL); | |
9862 | ||
9863 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9864 | |
9865 | maybe_print_thread_hit_breakpoint (uiout); | |
9866 | ||
f1310107 | 9867 | if (b->disposition == disp_del) |
112e8700 | 9868 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9869 | else |
112e8700 SM |
9870 | uiout->text ("Ranged breakpoint "); |
9871 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9872 | { |
112e8700 | 9873 | uiout->field_string ("reason", |
f1310107 | 9874 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9875 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9876 | } |
112e8700 SM |
9877 | uiout->field_int ("bkptno", b->number); |
9878 | uiout->text (", "); | |
f1310107 TJB |
9879 | |
9880 | return PRINT_SRC_AND_LOC; | |
9881 | } | |
9882 | ||
9883 | /* Implement the "print_one" breakpoint_ops method for | |
9884 | ranged breakpoints. */ | |
9885 | ||
9886 | static void | |
9887 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9888 | struct bp_location **last_loc) | |
9889 | { | |
9890 | struct bp_location *bl = b->loc; | |
9891 | struct value_print_options opts; | |
79a45e25 | 9892 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9893 | |
9894 | /* Ranged breakpoints have only one location. */ | |
9895 | gdb_assert (bl && bl->next == NULL); | |
9896 | ||
9897 | get_user_print_options (&opts); | |
9898 | ||
9899 | if (opts.addressprint) | |
9900 | /* We don't print the address range here, it will be printed later | |
9901 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9902 | uiout->field_skip ("addr"); |
f1310107 TJB |
9903 | annotate_field (5); |
9904 | print_breakpoint_location (b, bl); | |
9905 | *last_loc = bl; | |
9906 | } | |
9907 | ||
9908 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9909 | ranged breakpoints. */ | |
9910 | ||
9911 | static void | |
9912 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9913 | struct ui_out *uiout) | |
9914 | { | |
9915 | CORE_ADDR address_start, address_end; | |
9916 | struct bp_location *bl = b->loc; | |
d7e74731 | 9917 | string_file stb; |
f1310107 TJB |
9918 | |
9919 | gdb_assert (bl); | |
9920 | ||
9921 | address_start = bl->address; | |
9922 | address_end = address_start + bl->length - 1; | |
9923 | ||
112e8700 | 9924 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9925 | stb.printf ("[%s, %s]", |
9926 | print_core_address (bl->gdbarch, address_start), | |
9927 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9928 | uiout->field_stream ("addr", stb); |
9929 | uiout->text ("\n"); | |
f1310107 TJB |
9930 | } |
9931 | ||
9932 | /* Implement the "print_mention" breakpoint_ops method for | |
9933 | ranged breakpoints. */ | |
9934 | ||
9935 | static void | |
9936 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9937 | { | |
9938 | struct bp_location *bl = b->loc; | |
79a45e25 | 9939 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9940 | |
9941 | gdb_assert (bl); | |
9942 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9943 | ||
112e8700 | 9944 | if (uiout->is_mi_like_p ()) |
f1310107 TJB |
9945 | return; |
9946 | ||
9947 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9948 | b->number, paddress (bl->gdbarch, bl->address), | |
9949 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9950 | } | |
9951 | ||
9952 | /* Implement the "print_recreate" breakpoint_ops method for | |
9953 | ranged breakpoints. */ | |
9954 | ||
9955 | static void | |
9956 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9957 | { | |
f00aae0f | 9958 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9959 | event_location_to_string (b->location.get ()), |
9960 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9961 | print_recreate_thread (b, fp); |
f1310107 TJB |
9962 | } |
9963 | ||
9964 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9965 | ||
2060206e | 9966 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9967 | |
9968 | /* Find the address where the end of the breakpoint range should be | |
9969 | placed, given the SAL of the end of the range. This is so that if | |
9970 | the user provides a line number, the end of the range is set to the | |
9971 | last instruction of the given line. */ | |
9972 | ||
9973 | static CORE_ADDR | |
9974 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9975 | { | |
9976 | CORE_ADDR end; | |
9977 | ||
9978 | /* If the user provided a PC value, use it. Otherwise, | |
9979 | find the address of the end of the given location. */ | |
9980 | if (sal.explicit_pc) | |
9981 | end = sal.pc; | |
9982 | else | |
9983 | { | |
9984 | int ret; | |
9985 | CORE_ADDR start; | |
9986 | ||
9987 | ret = find_line_pc_range (sal, &start, &end); | |
9988 | if (!ret) | |
9989 | error (_("Could not find location of the end of the range.")); | |
9990 | ||
9991 | /* find_line_pc_range returns the start of the next line. */ | |
9992 | end--; | |
9993 | } | |
9994 | ||
9995 | return end; | |
9996 | } | |
9997 | ||
9998 | /* Implement the "break-range" CLI command. */ | |
9999 | ||
10000 | static void | |
f2fc3015 | 10001 | break_range_command (char *arg_in, int from_tty) |
f1310107 | 10002 | { |
f2fc3015 TT |
10003 | const char *arg = arg_in; |
10004 | const char *arg_start; | |
10005 | char *addr_string_start; | |
f1310107 TJB |
10006 | struct linespec_result canonical_start, canonical_end; |
10007 | int bp_count, can_use_bp, length; | |
10008 | CORE_ADDR end; | |
10009 | struct breakpoint *b; | |
f1310107 TJB |
10010 | struct cleanup *cleanup_bkpt; |
10011 | ||
10012 | /* We don't support software ranged breakpoints. */ | |
10013 | if (target_ranged_break_num_registers () < 0) | |
10014 | error (_("This target does not support hardware ranged breakpoints.")); | |
10015 | ||
10016 | bp_count = hw_breakpoint_used_count (); | |
10017 | bp_count += target_ranged_break_num_registers (); | |
10018 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10019 | bp_count, 0); | |
10020 | if (can_use_bp < 0) | |
10021 | error (_("Hardware breakpoints used exceeds limit.")); | |
10022 | ||
f8eba3c6 | 10023 | arg = skip_spaces (arg); |
f1310107 TJB |
10024 | if (arg == NULL || arg[0] == '\0') |
10025 | error(_("No address range specified.")); | |
10026 | ||
f8eba3c6 | 10027 | arg_start = arg; |
ffc2605c TT |
10028 | event_location_up start_location = string_to_event_location (&arg, |
10029 | current_language); | |
10030 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
10031 | |
10032 | if (arg[0] != ',') | |
10033 | error (_("Too few arguments.")); | |
6c5b2ebe | 10034 | else if (canonical_start.lsals.empty ()) |
f1310107 | 10035 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 10036 | |
6c5b2ebe | 10037 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 10038 | |
6c5b2ebe PA |
10039 | if (canonical_start.lsals.size () > 1 |
10040 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
10041 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10042 | ||
6c5b2ebe | 10043 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
f8eba3c6 | 10044 | addr_string_start = savestring (arg_start, arg - arg_start); |
16e802b9 | 10045 | cleanup_bkpt = make_cleanup (xfree, addr_string_start); |
f1310107 TJB |
10046 | |
10047 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10048 | arg = skip_spaces (arg); |
f1310107 TJB |
10049 | |
10050 | /* Parse the end location. */ | |
10051 | ||
f1310107 TJB |
10052 | arg_start = arg; |
10053 | ||
f8eba3c6 | 10054 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10055 | parse_breakpoint_sals because we need to specify the start location's |
10056 | symtab and line as the default symtab and line for the end of the | |
10057 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10058 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
10059 | event_location_up end_location = string_to_event_location (&arg, |
10060 | current_language); | |
10061 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
10062 | sal_start.symtab, sal_start.line, |
10063 | &canonical_end, NULL, NULL); | |
10064 | ||
6c5b2ebe | 10065 | if (canonical_end.lsals.empty ()) |
f1310107 | 10066 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 10067 | |
6c5b2ebe PA |
10068 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
10069 | if (canonical_end.lsals.size () > 1 | |
10070 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10071 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10072 | ||
6c5b2ebe | 10073 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10074 | |
10075 | end = find_breakpoint_range_end (sal_end); | |
10076 | if (sal_start.pc > end) | |
177b42fe | 10077 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10078 | |
10079 | length = end - sal_start.pc + 1; | |
10080 | if (length < 0) | |
10081 | /* Length overflowed. */ | |
10082 | error (_("Address range too large.")); | |
10083 | else if (length == 1) | |
10084 | { | |
10085 | /* This range is simple enough to be handled by | |
10086 | the `hbreak' command. */ | |
10087 | hbreak_command (addr_string_start, 1); | |
10088 | ||
10089 | do_cleanups (cleanup_bkpt); | |
10090 | ||
10091 | return; | |
10092 | } | |
10093 | ||
10094 | /* Now set up the breakpoint. */ | |
10095 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10096 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10097 | set_breakpoint_count (breakpoint_count + 1); |
10098 | b->number = breakpoint_count; | |
10099 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10100 | b->location = std::move (start_location); |
10101 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10102 | b->loc->length = length; |
10103 | ||
f8eba3c6 | 10104 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10105 | |
10106 | mention (b); | |
8d3788bd | 10107 | observer_notify_breakpoint_created (b); |
44702360 | 10108 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10109 | } |
10110 | ||
4a64f543 MS |
10111 | /* Return non-zero if EXP is verified as constant. Returned zero |
10112 | means EXP is variable. Also the constant detection may fail for | |
10113 | some constant expressions and in such case still falsely return | |
10114 | zero. */ | |
2e6e3d9c | 10115 | |
65d79d4b SDJ |
10116 | static int |
10117 | watchpoint_exp_is_const (const struct expression *exp) | |
10118 | { | |
10119 | int i = exp->nelts; | |
10120 | ||
10121 | while (i > 0) | |
10122 | { | |
10123 | int oplenp, argsp; | |
10124 | ||
10125 | /* We are only interested in the descriptor of each element. */ | |
10126 | operator_length (exp, i, &oplenp, &argsp); | |
10127 | i -= oplenp; | |
10128 | ||
10129 | switch (exp->elts[i].opcode) | |
10130 | { | |
10131 | case BINOP_ADD: | |
10132 | case BINOP_SUB: | |
10133 | case BINOP_MUL: | |
10134 | case BINOP_DIV: | |
10135 | case BINOP_REM: | |
10136 | case BINOP_MOD: | |
10137 | case BINOP_LSH: | |
10138 | case BINOP_RSH: | |
10139 | case BINOP_LOGICAL_AND: | |
10140 | case BINOP_LOGICAL_OR: | |
10141 | case BINOP_BITWISE_AND: | |
10142 | case BINOP_BITWISE_IOR: | |
10143 | case BINOP_BITWISE_XOR: | |
10144 | case BINOP_EQUAL: | |
10145 | case BINOP_NOTEQUAL: | |
10146 | case BINOP_LESS: | |
10147 | case BINOP_GTR: | |
10148 | case BINOP_LEQ: | |
10149 | case BINOP_GEQ: | |
10150 | case BINOP_REPEAT: | |
10151 | case BINOP_COMMA: | |
10152 | case BINOP_EXP: | |
10153 | case BINOP_MIN: | |
10154 | case BINOP_MAX: | |
10155 | case BINOP_INTDIV: | |
10156 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10157 | case TERNOP_COND: |
10158 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10159 | |
10160 | case OP_LONG: | |
10161 | case OP_DOUBLE: | |
10162 | case OP_DECFLOAT: | |
10163 | case OP_LAST: | |
10164 | case OP_COMPLEX: | |
10165 | case OP_STRING: | |
65d79d4b SDJ |
10166 | case OP_ARRAY: |
10167 | case OP_TYPE: | |
608b4967 TT |
10168 | case OP_TYPEOF: |
10169 | case OP_DECLTYPE: | |
6e72ca20 | 10170 | case OP_TYPEID: |
65d79d4b SDJ |
10171 | case OP_NAME: |
10172 | case OP_OBJC_NSSTRING: | |
10173 | ||
10174 | case UNOP_NEG: | |
10175 | case UNOP_LOGICAL_NOT: | |
10176 | case UNOP_COMPLEMENT: | |
10177 | case UNOP_ADDR: | |
10178 | case UNOP_HIGH: | |
aeaa2474 | 10179 | case UNOP_CAST: |
9eaf6705 TT |
10180 | |
10181 | case UNOP_CAST_TYPE: | |
10182 | case UNOP_REINTERPRET_CAST: | |
10183 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10184 | /* Unary, binary and ternary operators: We have to check |
10185 | their operands. If they are constant, then so is the | |
10186 | result of that operation. For instance, if A and B are | |
10187 | determined to be constants, then so is "A + B". | |
10188 | ||
10189 | UNOP_IND is one exception to the rule above, because the | |
10190 | value of *ADDR is not necessarily a constant, even when | |
10191 | ADDR is. */ | |
65d79d4b SDJ |
10192 | break; |
10193 | ||
10194 | case OP_VAR_VALUE: | |
10195 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10196 | |
65d79d4b | 10197 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10198 | possible that a buggy compiler could mark a variable as |
10199 | constant even when it is not, and TYPE_CONST would return | |
10200 | true in this case, while SYMBOL_CLASS wouldn't. | |
10201 | ||
10202 | We also have to check for function symbols because they | |
10203 | are always constant. */ | |
65d79d4b SDJ |
10204 | { |
10205 | struct symbol *s = exp->elts[i + 2].symbol; | |
10206 | ||
10207 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10208 | && SYMBOL_CLASS (s) != LOC_CONST | |
10209 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10210 | return 0; | |
10211 | break; | |
10212 | } | |
10213 | ||
10214 | /* The default action is to return 0 because we are using | |
10215 | the optimistic approach here: If we don't know something, | |
10216 | then it is not a constant. */ | |
10217 | default: | |
10218 | return 0; | |
10219 | } | |
10220 | } | |
10221 | ||
10222 | return 1; | |
10223 | } | |
10224 | ||
c1fc2657 | 10225 | /* Watchpoint destructor. */ |
3a5c3e22 | 10226 | |
c1fc2657 | 10227 | watchpoint::~watchpoint () |
3a5c3e22 | 10228 | { |
c1fc2657 SM |
10229 | xfree (this->exp_string); |
10230 | xfree (this->exp_string_reparse); | |
10231 | value_free (this->val); | |
3a5c3e22 PA |
10232 | } |
10233 | ||
348d480f PA |
10234 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10235 | ||
10236 | static void | |
10237 | re_set_watchpoint (struct breakpoint *b) | |
10238 | { | |
3a5c3e22 PA |
10239 | struct watchpoint *w = (struct watchpoint *) b; |
10240 | ||
348d480f PA |
10241 | /* Watchpoint can be either on expression using entirely global |
10242 | variables, or it can be on local variables. | |
10243 | ||
10244 | Watchpoints of the first kind are never auto-deleted, and even | |
10245 | persist across program restarts. Since they can use variables | |
10246 | from shared libraries, we need to reparse expression as libraries | |
10247 | are loaded and unloaded. | |
10248 | ||
10249 | Watchpoints on local variables can also change meaning as result | |
10250 | of solib event. For example, if a watchpoint uses both a local | |
10251 | and a global variables in expression, it's a local watchpoint, | |
10252 | but unloading of a shared library will make the expression | |
10253 | invalid. This is not a very common use case, but we still | |
10254 | re-evaluate expression, to avoid surprises to the user. | |
10255 | ||
10256 | Note that for local watchpoints, we re-evaluate it only if | |
10257 | watchpoints frame id is still valid. If it's not, it means the | |
10258 | watchpoint is out of scope and will be deleted soon. In fact, | |
10259 | I'm not sure we'll ever be called in this case. | |
10260 | ||
10261 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10262 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10263 | |
3a5c3e22 PA |
10264 | Don't do anything about disabled watchpoints, since they will be |
10265 | reevaluated again when enabled. */ | |
10266 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10267 | } |
10268 | ||
77b06cd7 TJB |
10269 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10270 | ||
10271 | static int | |
10272 | insert_watchpoint (struct bp_location *bl) | |
10273 | { | |
3a5c3e22 PA |
10274 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10275 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10276 | |
10277 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10278 | w->cond_exp.get ()); |
77b06cd7 TJB |
10279 | } |
10280 | ||
10281 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10282 | ||
10283 | static int | |
73971819 | 10284 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10285 | { |
3a5c3e22 PA |
10286 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10287 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10288 | |
10289 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10290 | w->cond_exp.get ()); |
e09342b5 TJB |
10291 | } |
10292 | ||
e09342b5 | 10293 | static int |
348d480f | 10294 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10295 | struct address_space *aspace, CORE_ADDR bp_addr, |
10296 | const struct target_waitstatus *ws) | |
e09342b5 | 10297 | { |
348d480f | 10298 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10299 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10300 | |
348d480f PA |
10301 | /* Continuable hardware watchpoints are treated as non-existent if the |
10302 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10303 | some data address). Otherwise gdb won't stop on a break instruction | |
10304 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10305 | been defined. Also skip watchpoints which we know did not trigger | |
10306 | (did not match the data address). */ | |
10307 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10308 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10309 | return 0; |
9c06b0b4 | 10310 | |
348d480f | 10311 | return 1; |
9c06b0b4 TJB |
10312 | } |
10313 | ||
348d480f PA |
10314 | static void |
10315 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10316 | { |
348d480f | 10317 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10318 | |
348d480f | 10319 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10320 | } |
10321 | ||
10322 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10323 | hardware watchpoints. */ |
9c06b0b4 TJB |
10324 | |
10325 | static int | |
348d480f | 10326 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10327 | { |
3a5c3e22 PA |
10328 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10329 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10330 | |
10331 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10332 | } |
10333 | ||
10334 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10335 | hardware watchpoints. */ |
9c06b0b4 TJB |
10336 | |
10337 | static int | |
348d480f | 10338 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10339 | { |
efa80663 PA |
10340 | /* Read and access watchpoints only work with hardware support. */ |
10341 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10342 | } |
10343 | ||
9c06b0b4 | 10344 | static enum print_stop_action |
348d480f | 10345 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10346 | { |
348d480f | 10347 | struct breakpoint *b; |
348d480f | 10348 | enum print_stop_action result; |
3a5c3e22 | 10349 | struct watchpoint *w; |
79a45e25 | 10350 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10351 | |
10352 | gdb_assert (bs->bp_location_at != NULL); | |
10353 | ||
348d480f | 10354 | b = bs->breakpoint_at; |
3a5c3e22 | 10355 | w = (struct watchpoint *) b; |
348d480f | 10356 | |
f303dbd6 PA |
10357 | annotate_watchpoint (b->number); |
10358 | maybe_print_thread_hit_breakpoint (uiout); | |
10359 | ||
d7e74731 PA |
10360 | string_file stb; |
10361 | ||
76f9c9cf | 10362 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10363 | switch (b->type) |
10364 | { | |
348d480f | 10365 | case bp_watchpoint: |
9c06b0b4 | 10366 | case bp_hardware_watchpoint: |
112e8700 SM |
10367 | if (uiout->is_mi_like_p ()) |
10368 | uiout->field_string | |
10369 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10370 | mention (b); |
76f9c9cf | 10371 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10372 | uiout->text ("\nOld value = "); |
d7e74731 | 10373 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10374 | uiout->field_stream ("old", stb); |
10375 | uiout->text ("\nNew value = "); | |
d7e74731 | 10376 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10377 | uiout->field_stream ("new", stb); |
10378 | uiout->text ("\n"); | |
348d480f PA |
10379 | /* More than one watchpoint may have been triggered. */ |
10380 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10381 | break; |
10382 | ||
10383 | case bp_read_watchpoint: | |
112e8700 SM |
10384 | if (uiout->is_mi_like_p ()) |
10385 | uiout->field_string | |
10386 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10387 | mention (b); |
76f9c9cf | 10388 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10389 | uiout->text ("\nValue = "); |
d7e74731 | 10390 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10391 | uiout->field_stream ("value", stb); |
10392 | uiout->text ("\n"); | |
348d480f | 10393 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10394 | break; |
10395 | ||
10396 | case bp_access_watchpoint: | |
348d480f PA |
10397 | if (bs->old_val != NULL) |
10398 | { | |
112e8700 SM |
10399 | if (uiout->is_mi_like_p ()) |
10400 | uiout->field_string | |
10401 | ("reason", | |
348d480f PA |
10402 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10403 | mention (b); | |
76f9c9cf | 10404 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10405 | uiout->text ("\nOld value = "); |
d7e74731 | 10406 | watchpoint_value_print (bs->old_val, &stb); |
112e8700 SM |
10407 | uiout->field_stream ("old", stb); |
10408 | uiout->text ("\nNew value = "); | |
348d480f PA |
10409 | } |
10410 | else | |
10411 | { | |
10412 | mention (b); | |
112e8700 SM |
10413 | if (uiout->is_mi_like_p ()) |
10414 | uiout->field_string | |
10415 | ("reason", | |
348d480f | 10416 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10417 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10418 | uiout->text ("\nValue = "); |
348d480f | 10419 | } |
d7e74731 | 10420 | watchpoint_value_print (w->val, &stb); |
112e8700 SM |
10421 | uiout->field_stream ("new", stb); |
10422 | uiout->text ("\n"); | |
348d480f | 10423 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10424 | break; |
10425 | default: | |
348d480f | 10426 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10427 | } |
10428 | ||
348d480f PA |
10429 | return result; |
10430 | } | |
10431 | ||
10432 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10433 | watchpoints. */ | |
10434 | ||
10435 | static void | |
10436 | print_mention_watchpoint (struct breakpoint *b) | |
10437 | { | |
3a5c3e22 | 10438 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10439 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10440 | const char *tuple_name; |
348d480f PA |
10441 | |
10442 | switch (b->type) | |
10443 | { | |
10444 | case bp_watchpoint: | |
112e8700 | 10445 | uiout->text ("Watchpoint "); |
46b9c129 | 10446 | tuple_name = "wpt"; |
348d480f PA |
10447 | break; |
10448 | case bp_hardware_watchpoint: | |
112e8700 | 10449 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10450 | tuple_name = "wpt"; |
348d480f PA |
10451 | break; |
10452 | case bp_read_watchpoint: | |
112e8700 | 10453 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10454 | tuple_name = "hw-rwpt"; |
348d480f PA |
10455 | break; |
10456 | case bp_access_watchpoint: | |
112e8700 | 10457 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10458 | tuple_name = "hw-awpt"; |
348d480f PA |
10459 | break; |
10460 | default: | |
10461 | internal_error (__FILE__, __LINE__, | |
10462 | _("Invalid hardware watchpoint type.")); | |
10463 | } | |
10464 | ||
46b9c129 | 10465 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10466 | uiout->field_int ("number", b->number); |
10467 | uiout->text (": "); | |
10468 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10469 | } |
10470 | ||
10471 | /* Implement the "print_recreate" breakpoint_ops method for | |
10472 | watchpoints. */ | |
10473 | ||
10474 | static void | |
10475 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10476 | { | |
3a5c3e22 PA |
10477 | struct watchpoint *w = (struct watchpoint *) b; |
10478 | ||
348d480f PA |
10479 | switch (b->type) |
10480 | { | |
10481 | case bp_watchpoint: | |
10482 | case bp_hardware_watchpoint: | |
10483 | fprintf_unfiltered (fp, "watch"); | |
10484 | break; | |
10485 | case bp_read_watchpoint: | |
10486 | fprintf_unfiltered (fp, "rwatch"); | |
10487 | break; | |
10488 | case bp_access_watchpoint: | |
10489 | fprintf_unfiltered (fp, "awatch"); | |
10490 | break; | |
10491 | default: | |
10492 | internal_error (__FILE__, __LINE__, | |
10493 | _("Invalid watchpoint type.")); | |
10494 | } | |
10495 | ||
3a5c3e22 | 10496 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10497 | print_recreate_thread (b, fp); |
348d480f PA |
10498 | } |
10499 | ||
427cd150 TT |
10500 | /* Implement the "explains_signal" breakpoint_ops method for |
10501 | watchpoints. */ | |
10502 | ||
47591c29 | 10503 | static int |
427cd150 TT |
10504 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10505 | { | |
10506 | /* A software watchpoint cannot cause a signal other than | |
10507 | GDB_SIGNAL_TRAP. */ | |
10508 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10509 | return 0; |
427cd150 | 10510 | |
47591c29 | 10511 | return 1; |
427cd150 TT |
10512 | } |
10513 | ||
348d480f PA |
10514 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10515 | ||
2060206e | 10516 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10517 | |
10518 | /* Implement the "insert" breakpoint_ops method for | |
10519 | masked hardware watchpoints. */ | |
10520 | ||
10521 | static int | |
10522 | insert_masked_watchpoint (struct bp_location *bl) | |
10523 | { | |
3a5c3e22 PA |
10524 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10525 | ||
10526 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10527 | bl->watchpoint_type); |
10528 | } | |
10529 | ||
10530 | /* Implement the "remove" breakpoint_ops method for | |
10531 | masked hardware watchpoints. */ | |
10532 | ||
10533 | static int | |
73971819 | 10534 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10535 | { |
3a5c3e22 PA |
10536 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10537 | ||
10538 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10539 | bl->watchpoint_type); |
10540 | } | |
10541 | ||
10542 | /* Implement the "resources_needed" breakpoint_ops method for | |
10543 | masked hardware watchpoints. */ | |
10544 | ||
10545 | static int | |
10546 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10547 | { | |
3a5c3e22 PA |
10548 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10549 | ||
10550 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10551 | } |
10552 | ||
10553 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10554 | masked hardware watchpoints. */ | |
10555 | ||
10556 | static int | |
10557 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10558 | { | |
10559 | return 0; | |
10560 | } | |
10561 | ||
10562 | /* Implement the "print_it" breakpoint_ops method for | |
10563 | masked hardware watchpoints. */ | |
10564 | ||
10565 | static enum print_stop_action | |
10566 | print_it_masked_watchpoint (bpstat bs) | |
10567 | { | |
10568 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10569 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10570 | |
10571 | /* Masked watchpoints have only one location. */ | |
10572 | gdb_assert (b->loc && b->loc->next == NULL); | |
10573 | ||
f303dbd6 PA |
10574 | annotate_watchpoint (b->number); |
10575 | maybe_print_thread_hit_breakpoint (uiout); | |
10576 | ||
348d480f PA |
10577 | switch (b->type) |
10578 | { | |
10579 | case bp_hardware_watchpoint: | |
112e8700 SM |
10580 | if (uiout->is_mi_like_p ()) |
10581 | uiout->field_string | |
10582 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10583 | break; |
10584 | ||
10585 | case bp_read_watchpoint: | |
112e8700 SM |
10586 | if (uiout->is_mi_like_p ()) |
10587 | uiout->field_string | |
10588 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10589 | break; |
10590 | ||
10591 | case bp_access_watchpoint: | |
112e8700 SM |
10592 | if (uiout->is_mi_like_p ()) |
10593 | uiout->field_string | |
10594 | ("reason", | |
348d480f PA |
10595 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10596 | break; | |
10597 | default: | |
10598 | internal_error (__FILE__, __LINE__, | |
10599 | _("Invalid hardware watchpoint type.")); | |
10600 | } | |
10601 | ||
10602 | mention (b); | |
112e8700 | 10603 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10604 | Check the underlying instruction at PC for the memory\n\ |
10605 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10606 | uiout->text ("\n"); |
9c06b0b4 TJB |
10607 | |
10608 | /* More than one watchpoint may have been triggered. */ | |
10609 | return PRINT_UNKNOWN; | |
10610 | } | |
10611 | ||
10612 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10613 | masked hardware watchpoints. */ | |
10614 | ||
10615 | static void | |
10616 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10617 | struct ui_out *uiout) | |
10618 | { | |
3a5c3e22 PA |
10619 | struct watchpoint *w = (struct watchpoint *) b; |
10620 | ||
9c06b0b4 TJB |
10621 | /* Masked watchpoints have only one location. */ |
10622 | gdb_assert (b->loc && b->loc->next == NULL); | |
10623 | ||
112e8700 SM |
10624 | uiout->text ("\tmask "); |
10625 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10626 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10627 | } |
10628 | ||
10629 | /* Implement the "print_mention" breakpoint_ops method for | |
10630 | masked hardware watchpoints. */ | |
10631 | ||
10632 | static void | |
10633 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10634 | { | |
3a5c3e22 | 10635 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10636 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10637 | const char *tuple_name; |
9c06b0b4 TJB |
10638 | |
10639 | switch (b->type) | |
10640 | { | |
10641 | case bp_hardware_watchpoint: | |
112e8700 | 10642 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10643 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10644 | break; |
10645 | case bp_read_watchpoint: | |
112e8700 | 10646 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10647 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10648 | break; |
10649 | case bp_access_watchpoint: | |
112e8700 | 10650 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10651 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10652 | break; |
10653 | default: | |
10654 | internal_error (__FILE__, __LINE__, | |
10655 | _("Invalid hardware watchpoint type.")); | |
10656 | } | |
10657 | ||
46b9c129 | 10658 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10659 | uiout->field_int ("number", b->number); |
10660 | uiout->text (": "); | |
10661 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10662 | } |
10663 | ||
10664 | /* Implement the "print_recreate" breakpoint_ops method for | |
10665 | masked hardware watchpoints. */ | |
10666 | ||
10667 | static void | |
10668 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10669 | { | |
3a5c3e22 | 10670 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10671 | char tmp[40]; |
10672 | ||
10673 | switch (b->type) | |
10674 | { | |
10675 | case bp_hardware_watchpoint: | |
10676 | fprintf_unfiltered (fp, "watch"); | |
10677 | break; | |
10678 | case bp_read_watchpoint: | |
10679 | fprintf_unfiltered (fp, "rwatch"); | |
10680 | break; | |
10681 | case bp_access_watchpoint: | |
10682 | fprintf_unfiltered (fp, "awatch"); | |
10683 | break; | |
10684 | default: | |
10685 | internal_error (__FILE__, __LINE__, | |
10686 | _("Invalid hardware watchpoint type.")); | |
10687 | } | |
10688 | ||
3a5c3e22 PA |
10689 | sprintf_vma (tmp, w->hw_wp_mask); |
10690 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10691 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10692 | } |
10693 | ||
10694 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10695 | ||
2060206e | 10696 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10697 | |
10698 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10699 | ||
10700 | static int | |
10701 | is_masked_watchpoint (const struct breakpoint *b) | |
10702 | { | |
10703 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10704 | } | |
10705 | ||
53a5351d JM |
10706 | /* accessflag: hw_write: watch write, |
10707 | hw_read: watch read, | |
10708 | hw_access: watch access (read or write) */ | |
c906108c | 10709 | static void |
bbc13ae3 | 10710 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10711 | int just_location, int internal) |
c906108c | 10712 | { |
c1fc2657 | 10713 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10714 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10715 | struct value *val, *mark, *result; |
bb9d5f81 | 10716 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10717 | const char *exp_start = NULL; |
10718 | const char *exp_end = NULL; | |
10719 | const char *tok, *end_tok; | |
9c06b0b4 | 10720 | int toklen = -1; |
bbc13ae3 KS |
10721 | const char *cond_start = NULL; |
10722 | const char *cond_end = NULL; | |
c906108c | 10723 | enum bptype bp_type; |
37e4754d | 10724 | int thread = -1; |
0cf6dd15 | 10725 | int pc = 0; |
9c06b0b4 TJB |
10726 | /* Flag to indicate whether we are going to use masks for |
10727 | the hardware watchpoint. */ | |
10728 | int use_mask = 0; | |
10729 | CORE_ADDR mask = 0; | |
bbc13ae3 KS |
10730 | char *expression; |
10731 | struct cleanup *back_to; | |
c906108c | 10732 | |
37e4754d LM |
10733 | /* Make sure that we actually have parameters to parse. */ |
10734 | if (arg != NULL && arg[0] != '\0') | |
10735 | { | |
bbc13ae3 KS |
10736 | const char *value_start; |
10737 | ||
10738 | exp_end = arg + strlen (arg); | |
37e4754d | 10739 | |
9c06b0b4 TJB |
10740 | /* Look for "parameter value" pairs at the end |
10741 | of the arguments string. */ | |
bbc13ae3 | 10742 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10743 | { |
10744 | /* Skip whitespace at the end of the argument list. */ | |
10745 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10746 | tok--; | |
10747 | ||
10748 | /* Find the beginning of the last token. | |
10749 | This is the value of the parameter. */ | |
10750 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10751 | tok--; | |
10752 | value_start = tok + 1; | |
10753 | ||
10754 | /* Skip whitespace. */ | |
10755 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10756 | tok--; | |
10757 | ||
10758 | end_tok = tok; | |
10759 | ||
10760 | /* Find the beginning of the second to last token. | |
10761 | This is the parameter itself. */ | |
10762 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10763 | tok--; | |
10764 | tok++; | |
10765 | toklen = end_tok - tok + 1; | |
10766 | ||
61012eef | 10767 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10768 | { |
5d5658a1 | 10769 | struct thread_info *thr; |
9c06b0b4 TJB |
10770 | /* At this point we've found a "thread" token, which means |
10771 | the user is trying to set a watchpoint that triggers | |
10772 | only in a specific thread. */ | |
5d5658a1 | 10773 | const char *endp; |
37e4754d | 10774 | |
9c06b0b4 TJB |
10775 | if (thread != -1) |
10776 | error(_("You can specify only one thread.")); | |
37e4754d | 10777 | |
9c06b0b4 | 10778 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10779 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10780 | |
5d5658a1 | 10781 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10782 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10783 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10784 | |
5d5658a1 | 10785 | thread = thr->global_num; |
9c06b0b4 | 10786 | } |
61012eef | 10787 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10788 | { |
10789 | /* We've found a "mask" token, which means the user wants to | |
10790 | create a hardware watchpoint that is going to have the mask | |
10791 | facility. */ | |
10792 | struct value *mask_value, *mark; | |
37e4754d | 10793 | |
9c06b0b4 TJB |
10794 | if (use_mask) |
10795 | error(_("You can specify only one mask.")); | |
37e4754d | 10796 | |
9c06b0b4 | 10797 | use_mask = just_location = 1; |
37e4754d | 10798 | |
9c06b0b4 TJB |
10799 | mark = value_mark (); |
10800 | mask_value = parse_to_comma_and_eval (&value_start); | |
10801 | mask = value_as_address (mask_value); | |
10802 | value_free_to_mark (mark); | |
10803 | } | |
10804 | else | |
10805 | /* We didn't recognize what we found. We should stop here. */ | |
10806 | break; | |
37e4754d | 10807 | |
9c06b0b4 TJB |
10808 | /* Truncate the string and get rid of the "parameter value" pair before |
10809 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10810 | exp_end = tok; |
9c06b0b4 | 10811 | } |
37e4754d | 10812 | } |
bbc13ae3 KS |
10813 | else |
10814 | exp_end = arg; | |
37e4754d | 10815 | |
bbc13ae3 KS |
10816 | /* Parse the rest of the arguments. From here on out, everything |
10817 | is in terms of a newly allocated string instead of the original | |
10818 | ARG. */ | |
c906108c | 10819 | innermost_block = NULL; |
bbc13ae3 KS |
10820 | expression = savestring (arg, exp_end - arg); |
10821 | back_to = make_cleanup (xfree, expression); | |
10822 | exp_start = arg = expression; | |
4d01a485 | 10823 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10824 | exp_end = arg; |
fa8a61dc TT |
10825 | /* Remove trailing whitespace from the expression before saving it. |
10826 | This makes the eventual display of the expression string a bit | |
10827 | prettier. */ | |
10828 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10829 | --exp_end; | |
10830 | ||
65d79d4b | 10831 | /* Checking if the expression is not constant. */ |
4d01a485 | 10832 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10833 | { |
10834 | int len; | |
10835 | ||
10836 | len = exp_end - exp_start; | |
10837 | while (len > 0 && isspace (exp_start[len - 1])) | |
10838 | len--; | |
10839 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10840 | } | |
10841 | ||
c906108c SS |
10842 | exp_valid_block = innermost_block; |
10843 | mark = value_mark (); | |
4d01a485 | 10844 | fetch_subexp_value (exp.get (), &pc, &val, &result, NULL, just_location); |
06a64a0b | 10845 | |
bb9d5f81 PP |
10846 | if (val != NULL && just_location) |
10847 | { | |
10848 | saved_bitpos = value_bitpos (val); | |
10849 | saved_bitsize = value_bitsize (val); | |
10850 | } | |
10851 | ||
06a64a0b TT |
10852 | if (just_location) |
10853 | { | |
9c06b0b4 TJB |
10854 | int ret; |
10855 | ||
06a64a0b | 10856 | exp_valid_block = NULL; |
a1442452 | 10857 | val = value_addr (result); |
06a64a0b TT |
10858 | release_value (val); |
10859 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10860 | |
10861 | if (use_mask) | |
10862 | { | |
10863 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10864 | mask); | |
10865 | if (ret == -1) | |
10866 | error (_("This target does not support masked watchpoints.")); | |
10867 | else if (ret == -2) | |
10868 | error (_("Invalid mask or memory region.")); | |
10869 | } | |
06a64a0b TT |
10870 | } |
10871 | else if (val != NULL) | |
fa4727a6 | 10872 | release_value (val); |
c906108c | 10873 | |
f1735a53 TT |
10874 | tok = skip_spaces (arg); |
10875 | end_tok = skip_to_space (tok); | |
c906108c SS |
10876 | |
10877 | toklen = end_tok - tok; | |
10878 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10879 | { | |
60e1c644 | 10880 | innermost_block = NULL; |
c906108c | 10881 | tok = cond_start = end_tok + 1; |
4d01a485 | 10882 | parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10883 | |
10884 | /* The watchpoint expression may not be local, but the condition | |
10885 | may still be. E.g.: `watch global if local > 0'. */ | |
10886 | cond_exp_valid_block = innermost_block; | |
10887 | ||
c906108c SS |
10888 | cond_end = tok; |
10889 | } | |
10890 | if (*tok) | |
8a3fe4f8 | 10891 | error (_("Junk at end of command.")); |
c906108c | 10892 | |
441d7c93 PA |
10893 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10894 | ||
10895 | /* Save this because create_internal_breakpoint below invalidates | |
10896 | 'wp_frame'. */ | |
10897 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10898 | |
10899 | /* If the expression is "local", then set up a "watchpoint scope" | |
10900 | breakpoint at the point where we've left the scope of the watchpoint | |
10901 | expression. Create the scope breakpoint before the watchpoint, so | |
10902 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10903 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10904 | { |
441d7c93 PA |
10905 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10906 | ||
10907 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10908 | { |
441d7c93 PA |
10909 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10910 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10911 | ||
edb3359d | 10912 | scope_breakpoint |
441d7c93 | 10913 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10914 | bp_watchpoint_scope, |
10915 | &momentary_breakpoint_ops); | |
d983da9c | 10916 | |
441d7c93 PA |
10917 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10918 | wp_frame = NULL; | |
10919 | ||
edb3359d | 10920 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10921 | |
edb3359d DJ |
10922 | /* Automatically delete the breakpoint when it hits. */ |
10923 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10924 | |
edb3359d | 10925 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10926 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10927 | |
edb3359d | 10928 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10929 | scope_breakpoint->loc->gdbarch = caller_arch; |
10930 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10931 | scope_breakpoint->loc->address |
a6d9a66e UW |
10932 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10933 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10934 | scope_breakpoint->type); |
10935 | } | |
d983da9c DJ |
10936 | } |
10937 | ||
e8369a73 AB |
10938 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10939 | watchpoints here even if hardware watchpoints are turned off, a call | |
10940 | to update_watchpoint later in this function will cause the type to | |
10941 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10942 | ||
10943 | if (accessflag == hw_read) | |
10944 | bp_type = bp_read_watchpoint; | |
10945 | else if (accessflag == hw_access) | |
10946 | bp_type = bp_access_watchpoint; | |
10947 | else | |
10948 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10949 | |
b270e6f9 | 10950 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10951 | |
348d480f | 10952 | if (use_mask) |
b270e6f9 | 10953 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10954 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10955 | else |
b270e6f9 | 10956 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10957 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10958 | w->thread = thread; |
10959 | w->disposition = disp_donttouch; | |
10960 | w->pspace = current_program_space; | |
b22e99fd | 10961 | w->exp = std::move (exp); |
3a5c3e22 PA |
10962 | w->exp_valid_block = exp_valid_block; |
10963 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10964 | if (just_location) |
10965 | { | |
10966 | struct type *t = value_type (val); | |
10967 | CORE_ADDR addr = value_as_address (val); | |
06a64a0b | 10968 | |
43cc5389 TT |
10969 | w->exp_string_reparse |
10970 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10971 | |
3a5c3e22 | 10972 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10973 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10974 | } |
10975 | else | |
3a5c3e22 | 10976 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10977 | |
10978 | if (use_mask) | |
10979 | { | |
3a5c3e22 | 10980 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10981 | } |
10982 | else | |
10983 | { | |
3a5c3e22 | 10984 | w->val = val; |
bb9d5f81 PP |
10985 | w->val_bitpos = saved_bitpos; |
10986 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10987 | w->val_valid = 1; |
9c06b0b4 | 10988 | } |
77b06cd7 | 10989 | |
c906108c | 10990 | if (cond_start) |
c1fc2657 | 10991 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10992 | else |
c1fc2657 | 10993 | w->cond_string = 0; |
c5aa993b | 10994 | |
441d7c93 | 10995 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10996 | { |
441d7c93 | 10997 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10998 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10999 | } |
c906108c | 11000 | else |
f6bc2008 | 11001 | { |
3a5c3e22 PA |
11002 | w->watchpoint_frame = null_frame_id; |
11003 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11004 | } |
c906108c | 11005 | |
d983da9c | 11006 | if (scope_breakpoint != NULL) |
c906108c | 11007 | { |
d983da9c DJ |
11008 | /* The scope breakpoint is related to the watchpoint. We will |
11009 | need to act on them together. */ | |
c1fc2657 | 11010 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 11011 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 11012 | } |
d983da9c | 11013 | |
06a64a0b TT |
11014 | if (!just_location) |
11015 | value_free_to_mark (mark); | |
2d134ed3 | 11016 | |
b270e6f9 TT |
11017 | /* Finally update the new watchpoint. This creates the locations |
11018 | that should be inserted. */ | |
11019 | update_watchpoint (w.get (), 1); | |
a9634178 | 11020 | |
b270e6f9 | 11021 | install_breakpoint (internal, std::move (w), 1); |
bbc13ae3 | 11022 | do_cleanups (back_to); |
c906108c SS |
11023 | } |
11024 | ||
e09342b5 | 11025 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11026 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11027 | |
c906108c | 11028 | static int |
a9634178 | 11029 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11030 | { |
11031 | int found_memory_cnt = 0; | |
2e70b7b9 | 11032 | struct value *head = v; |
c906108c SS |
11033 | |
11034 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11035 | if (!can_use_hw_watchpoints) |
c906108c | 11036 | return 0; |
c5aa993b | 11037 | |
5c44784c JM |
11038 | /* Make sure that the value of the expression depends only upon |
11039 | memory contents, and values computed from them within GDB. If we | |
11040 | find any register references or function calls, we can't use a | |
11041 | hardware watchpoint. | |
11042 | ||
11043 | The idea here is that evaluating an expression generates a series | |
11044 | of values, one holding the value of every subexpression. (The | |
11045 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11046 | a*b+c.) GDB's values hold almost enough information to establish | |
11047 | the criteria given above --- they identify memory lvalues, | |
11048 | register lvalues, computed values, etcetera. So we can evaluate | |
11049 | the expression, and then scan the chain of values that leaves | |
11050 | behind to decide whether we can detect any possible change to the | |
11051 | expression's final value using only hardware watchpoints. | |
11052 | ||
11053 | However, I don't think that the values returned by inferior | |
11054 | function calls are special in any way. So this function may not | |
11055 | notice that an expression involving an inferior function call | |
11056 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11057 | for (; v; v = value_next (v)) |
c906108c | 11058 | { |
5c44784c | 11059 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11060 | { |
8464be76 DJ |
11061 | if (v != head && value_lazy (v)) |
11062 | /* A lazy memory lvalue in the chain is one that GDB never | |
11063 | needed to fetch; we either just used its address (e.g., | |
11064 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11065 | in `a,b'). This doesn't apply to HEAD; if that is | |
11066 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11067 | ; |
53a5351d | 11068 | else |
5c44784c JM |
11069 | { |
11070 | /* Ahh, memory we actually used! Check if we can cover | |
11071 | it with hardware watchpoints. */ | |
df407dfe | 11072 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11073 | |
11074 | /* We only watch structs and arrays if user asked for it | |
11075 | explicitly, never if they just happen to appear in a | |
11076 | middle of some value chain. */ | |
11077 | if (v == head | |
11078 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11079 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11080 | { | |
42ae5230 | 11081 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11082 | int len; |
11083 | int num_regs; | |
11084 | ||
a9634178 | 11085 | len = (target_exact_watchpoints |
e09342b5 TJB |
11086 | && is_scalar_type_recursive (vtype))? |
11087 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11088 | |
e09342b5 TJB |
11089 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11090 | if (!num_regs) | |
2e70b7b9 MS |
11091 | return 0; |
11092 | else | |
e09342b5 | 11093 | found_memory_cnt += num_regs; |
2e70b7b9 | 11094 | } |
5c44784c | 11095 | } |
c5aa993b | 11096 | } |
5086187c AC |
11097 | else if (VALUE_LVAL (v) != not_lval |
11098 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11099 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11100 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11101 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11102 | } |
11103 | ||
11104 | /* The expression itself looks suitable for using a hardware | |
11105 | watchpoint, but give the target machine a chance to reject it. */ | |
11106 | return found_memory_cnt; | |
11107 | } | |
11108 | ||
8b93c638 | 11109 | void |
f2fc3015 | 11110 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11111 | { |
84f4c1fe | 11112 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11113 | } |
11114 | ||
06a64a0b TT |
11115 | /* A helper function that looks for the "-location" argument and then |
11116 | calls watch_command_1. */ | |
11117 | ||
11118 | static void | |
11119 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11120 | { | |
11121 | int just_location = 0; | |
11122 | ||
11123 | if (arg | |
11124 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11125 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11126 | { | |
e9cafbcc | 11127 | arg = skip_spaces (arg); |
06a64a0b TT |
11128 | just_location = 1; |
11129 | } | |
11130 | ||
84f4c1fe | 11131 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11132 | } |
8926118c | 11133 | |
c5aa993b | 11134 | static void |
fba45db2 | 11135 | watch_command (char *arg, int from_tty) |
c906108c | 11136 | { |
06a64a0b | 11137 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11138 | } |
11139 | ||
8b93c638 | 11140 | void |
f2fc3015 | 11141 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11142 | { |
84f4c1fe | 11143 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11144 | } |
8926118c | 11145 | |
c5aa993b | 11146 | static void |
fba45db2 | 11147 | rwatch_command (char *arg, int from_tty) |
c906108c | 11148 | { |
06a64a0b | 11149 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11150 | } |
11151 | ||
8b93c638 | 11152 | void |
f2fc3015 | 11153 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11154 | { |
84f4c1fe | 11155 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11156 | } |
8926118c | 11157 | |
c5aa993b | 11158 | static void |
fba45db2 | 11159 | awatch_command (char *arg, int from_tty) |
c906108c | 11160 | { |
06a64a0b | 11161 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11162 | } |
c906108c | 11163 | \f |
c5aa993b | 11164 | |
cfc31633 PA |
11165 | /* Data for the FSM that manages the until(location)/advance commands |
11166 | in infcmd.c. Here because it uses the mechanisms of | |
11167 | breakpoints. */ | |
c906108c | 11168 | |
cfc31633 | 11169 | struct until_break_fsm |
bfec99b2 | 11170 | { |
cfc31633 PA |
11171 | /* The base class. */ |
11172 | struct thread_fsm thread_fsm; | |
11173 | ||
11174 | /* The thread that as current when the command was executed. */ | |
11175 | int thread; | |
11176 | ||
11177 | /* The breakpoint set at the destination location. */ | |
11178 | struct breakpoint *location_breakpoint; | |
11179 | ||
11180 | /* Breakpoint set at the return address in the caller frame. May be | |
11181 | NULL. */ | |
11182 | struct breakpoint *caller_breakpoint; | |
bfec99b2 PA |
11183 | }; |
11184 | ||
8980e177 PA |
11185 | static void until_break_fsm_clean_up (struct thread_fsm *self, |
11186 | struct thread_info *thread); | |
11187 | static int until_break_fsm_should_stop (struct thread_fsm *self, | |
11188 | struct thread_info *thread); | |
cfc31633 PA |
11189 | static enum async_reply_reason |
11190 | until_break_fsm_async_reply_reason (struct thread_fsm *self); | |
11191 | ||
11192 | /* until_break_fsm's vtable. */ | |
11193 | ||
11194 | static struct thread_fsm_ops until_break_fsm_ops = | |
11195 | { | |
11196 | NULL, /* dtor */ | |
11197 | until_break_fsm_clean_up, | |
11198 | until_break_fsm_should_stop, | |
11199 | NULL, /* return_value */ | |
11200 | until_break_fsm_async_reply_reason, | |
11201 | }; | |
11202 | ||
11203 | /* Allocate a new until_break_command_fsm. */ | |
11204 | ||
11205 | static struct until_break_fsm * | |
8980e177 | 11206 | new_until_break_fsm (struct interp *cmd_interp, int thread, |
cfc31633 PA |
11207 | struct breakpoint *location_breakpoint, |
11208 | struct breakpoint *caller_breakpoint) | |
11209 | { | |
11210 | struct until_break_fsm *sm; | |
11211 | ||
11212 | sm = XCNEW (struct until_break_fsm); | |
8980e177 | 11213 | thread_fsm_ctor (&sm->thread_fsm, &until_break_fsm_ops, cmd_interp); |
cfc31633 PA |
11214 | |
11215 | sm->thread = thread; | |
11216 | sm->location_breakpoint = location_breakpoint; | |
11217 | sm->caller_breakpoint = caller_breakpoint; | |
11218 | ||
11219 | return sm; | |
11220 | } | |
11221 | ||
11222 | /* Implementation of the 'should_stop' FSM method for the | |
11223 | until(location)/advance commands. */ | |
11224 | ||
11225 | static int | |
8980e177 PA |
11226 | until_break_fsm_should_stop (struct thread_fsm *self, |
11227 | struct thread_info *tp) | |
cfc31633 PA |
11228 | { |
11229 | struct until_break_fsm *sm = (struct until_break_fsm *) self; | |
cfc31633 PA |
11230 | |
11231 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11232 | sm->location_breakpoint) != NULL | |
11233 | || (sm->caller_breakpoint != NULL | |
11234 | && bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11235 | sm->caller_breakpoint) != NULL)) | |
11236 | thread_fsm_set_finished (self); | |
11237 | ||
11238 | return 1; | |
11239 | } | |
11240 | ||
11241 | /* Implementation of the 'clean_up' FSM method for the | |
11242 | until(location)/advance commands. */ | |
11243 | ||
c2c6d25f | 11244 | static void |
8980e177 PA |
11245 | until_break_fsm_clean_up (struct thread_fsm *self, |
11246 | struct thread_info *thread) | |
43ff13b4 | 11247 | { |
cfc31633 | 11248 | struct until_break_fsm *sm = (struct until_break_fsm *) self; |
bfec99b2 | 11249 | |
cfc31633 PA |
11250 | /* Clean up our temporary breakpoints. */ |
11251 | if (sm->location_breakpoint != NULL) | |
11252 | { | |
11253 | delete_breakpoint (sm->location_breakpoint); | |
11254 | sm->location_breakpoint = NULL; | |
11255 | } | |
11256 | if (sm->caller_breakpoint != NULL) | |
11257 | { | |
11258 | delete_breakpoint (sm->caller_breakpoint); | |
11259 | sm->caller_breakpoint = NULL; | |
11260 | } | |
11261 | delete_longjmp_breakpoint (sm->thread); | |
11262 | } | |
11263 | ||
11264 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11265 | until(location)/advance commands. */ | |
11266 | ||
11267 | static enum async_reply_reason | |
11268 | until_break_fsm_async_reply_reason (struct thread_fsm *self) | |
11269 | { | |
11270 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11271 | } |
11272 | ||
c906108c | 11273 | void |
f2fc3015 | 11274 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11275 | { |
8556afb4 PA |
11276 | struct frame_info *frame; |
11277 | struct gdbarch *frame_gdbarch; | |
11278 | struct frame_id stack_frame_id; | |
11279 | struct frame_id caller_frame_id; | |
cfc31633 PA |
11280 | struct breakpoint *location_breakpoint; |
11281 | struct breakpoint *caller_breakpoint = NULL; | |
ffc2605c | 11282 | struct cleanup *old_chain; |
186c406b TT |
11283 | int thread; |
11284 | struct thread_info *tp; | |
cfc31633 | 11285 | struct until_break_fsm *sm; |
c906108c | 11286 | |
70509625 | 11287 | clear_proceed_status (0); |
c906108c SS |
11288 | |
11289 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11290 | this function. */ |
c5aa993b | 11291 | |
ffc2605c | 11292 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11293 | |
6c5b2ebe PA |
11294 | std::vector<symtab_and_line> sals |
11295 | = (last_displayed_sal_is_valid () | |
11296 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11297 | get_last_displayed_symtab (), | |
11298 | get_last_displayed_line ()) | |
11299 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
11300 | NULL, (struct symtab *) NULL, 0)); | |
c5aa993b | 11301 | |
6c5b2ebe | 11302 | if (sals.size () != 1) |
8a3fe4f8 | 11303 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11304 | |
6c5b2ebe | 11305 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11306 | |
c906108c | 11307 | if (*arg) |
8a3fe4f8 | 11308 | error (_("Junk at end of arguments.")); |
c5aa993b | 11309 | |
c906108c | 11310 | resolve_sal_pc (&sal); |
c5aa993b | 11311 | |
186c406b | 11312 | tp = inferior_thread (); |
5d5658a1 | 11313 | thread = tp->global_num; |
186c406b | 11314 | |
883bc8d1 PA |
11315 | old_chain = make_cleanup (null_cleanup, NULL); |
11316 | ||
8556afb4 PA |
11317 | /* Note linespec handling above invalidates the frame chain. |
11318 | Installing a breakpoint also invalidates the frame chain (as it | |
11319 | may need to switch threads), so do any frame handling before | |
11320 | that. */ | |
11321 | ||
11322 | frame = get_selected_frame (NULL); | |
11323 | frame_gdbarch = get_frame_arch (frame); | |
11324 | stack_frame_id = get_stack_frame_id (frame); | |
11325 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11326 | |
ae66c1fc EZ |
11327 | /* Keep within the current frame, or in frames called by the current |
11328 | one. */ | |
edb3359d | 11329 | |
883bc8d1 | 11330 | if (frame_id_p (caller_frame_id)) |
c906108c | 11331 | { |
883bc8d1 | 11332 | struct symtab_and_line sal2; |
cfc31633 | 11333 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11334 | |
11335 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11336 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11337 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11338 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11339 | sal2, | |
11340 | caller_frame_id, | |
11341 | bp_until); | |
11342 | make_cleanup_delete_breakpoint (caller_breakpoint); | |
186c406b | 11343 | |
883bc8d1 | 11344 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11345 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11346 | } |
c5aa993b | 11347 | |
c70a6932 JK |
11348 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11349 | frame = NULL; | |
11350 | ||
883bc8d1 PA |
11351 | if (anywhere) |
11352 | /* If the user told us to continue until a specified location, | |
11353 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11354 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11355 | null_frame_id, bp_until); | |
883bc8d1 PA |
11356 | else |
11357 | /* Otherwise, specify the selected frame, because we want to stop | |
11358 | only at the very same frame. */ | |
cfc31633 PA |
11359 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11360 | stack_frame_id, bp_until); | |
11361 | make_cleanup_delete_breakpoint (location_breakpoint); | |
883bc8d1 | 11362 | |
8980e177 | 11363 | sm = new_until_break_fsm (command_interp (), tp->global_num, |
5d5658a1 | 11364 | location_breakpoint, caller_breakpoint); |
cfc31633 | 11365 | tp->thread_fsm = &sm->thread_fsm; |
f107f563 | 11366 | |
cfc31633 | 11367 | discard_cleanups (old_chain); |
f107f563 | 11368 | |
cfc31633 | 11369 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11370 | } |
ae66c1fc | 11371 | |
c906108c SS |
11372 | /* This function attempts to parse an optional "if <cond>" clause |
11373 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11374 | |
c906108c SS |
11375 | Else, it returns a pointer to the condition string. (It does not |
11376 | attempt to evaluate the string against a particular block.) And, | |
11377 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11378 | if clause in the arg string. */ |
53a5351d | 11379 | |
63160a43 PA |
11380 | const char * |
11381 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11382 | { |
63160a43 | 11383 | const char *cond_string; |
c5aa993b JM |
11384 | |
11385 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11386 | return NULL; |
c5aa993b | 11387 | |
4a64f543 | 11388 | /* Skip the "if" keyword. */ |
c906108c | 11389 | (*arg) += 2; |
c5aa993b | 11390 | |
c906108c | 11391 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11392 | condition string. */ |
f1735a53 | 11393 | *arg = skip_spaces (*arg); |
c906108c | 11394 | cond_string = *arg; |
c5aa993b | 11395 | |
4a64f543 MS |
11396 | /* Assume that the condition occupies the remainder of the arg |
11397 | string. */ | |
c906108c | 11398 | (*arg) += strlen (cond_string); |
c5aa993b | 11399 | |
c906108c SS |
11400 | return cond_string; |
11401 | } | |
c5aa993b | 11402 | |
c906108c SS |
11403 | /* Commands to deal with catching events, such as signals, exceptions, |
11404 | process start/exit, etc. */ | |
c5aa993b JM |
11405 | |
11406 | typedef enum | |
11407 | { | |
44feb3ce TT |
11408 | catch_fork_temporary, catch_vfork_temporary, |
11409 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11410 | } |
11411 | catch_fork_kind; | |
11412 | ||
c906108c | 11413 | static void |
63160a43 | 11414 | catch_fork_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11415 | struct cmd_list_element *command) |
c906108c | 11416 | { |
63160a43 | 11417 | const char *arg = arg_entry; |
a6d9a66e | 11418 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11419 | const char *cond_string = NULL; |
44feb3ce TT |
11420 | catch_fork_kind fork_kind; |
11421 | int tempflag; | |
11422 | ||
11423 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11424 | tempflag = (fork_kind == catch_fork_temporary | |
11425 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11426 | |
44feb3ce TT |
11427 | if (!arg) |
11428 | arg = ""; | |
f1735a53 | 11429 | arg = skip_spaces (arg); |
c5aa993b | 11430 | |
c906108c | 11431 | /* The allowed syntax is: |
c5aa993b JM |
11432 | catch [v]fork |
11433 | catch [v]fork if <cond> | |
11434 | ||
4a64f543 | 11435 | First, check if there's an if clause. */ |
c906108c | 11436 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11437 | |
c906108c | 11438 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11439 | error (_("Junk at end of arguments.")); |
c5aa993b | 11440 | |
c906108c | 11441 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11442 | and enable reporting of such events. */ |
c5aa993b JM |
11443 | switch (fork_kind) |
11444 | { | |
44feb3ce TT |
11445 | case catch_fork_temporary: |
11446 | case catch_fork_permanent: | |
a6d9a66e | 11447 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11448 | &catch_fork_breakpoint_ops); |
c906108c | 11449 | break; |
44feb3ce TT |
11450 | case catch_vfork_temporary: |
11451 | case catch_vfork_permanent: | |
a6d9a66e | 11452 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11453 | &catch_vfork_breakpoint_ops); |
c906108c | 11454 | break; |
c5aa993b | 11455 | default: |
8a3fe4f8 | 11456 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11457 | break; |
c5aa993b | 11458 | } |
c906108c SS |
11459 | } |
11460 | ||
11461 | static void | |
63160a43 | 11462 | catch_exec_command_1 (char *arg_entry, int from_tty, |
cc59ec59 | 11463 | struct cmd_list_element *command) |
c906108c | 11464 | { |
63160a43 | 11465 | const char *arg = arg_entry; |
a6d9a66e | 11466 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11467 | int tempflag; |
63160a43 | 11468 | const char *cond_string = NULL; |
c906108c | 11469 | |
44feb3ce TT |
11470 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11471 | ||
11472 | if (!arg) | |
11473 | arg = ""; | |
f1735a53 | 11474 | arg = skip_spaces (arg); |
c906108c SS |
11475 | |
11476 | /* The allowed syntax is: | |
c5aa993b JM |
11477 | catch exec |
11478 | catch exec if <cond> | |
c906108c | 11479 | |
4a64f543 | 11480 | First, check if there's an if clause. */ |
c906108c SS |
11481 | cond_string = ep_parse_optional_if_clause (&arg); |
11482 | ||
11483 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11484 | error (_("Junk at end of arguments.")); |
c906108c | 11485 | |
b270e6f9 TT |
11486 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11487 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11488 | &catch_exec_breakpoint_ops); |
11489 | c->exec_pathname = NULL; | |
11490 | ||
b270e6f9 | 11491 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11492 | } |
c5aa993b | 11493 | |
9ac4176b | 11494 | void |
28010a5d PA |
11495 | init_ada_exception_breakpoint (struct breakpoint *b, |
11496 | struct gdbarch *gdbarch, | |
11497 | struct symtab_and_line sal, | |
f2fc3015 | 11498 | const char *addr_string, |
c0a91b2b | 11499 | const struct breakpoint_ops *ops, |
28010a5d | 11500 | int tempflag, |
349774ef | 11501 | int enabled, |
28010a5d | 11502 | int from_tty) |
f7f9143b | 11503 | { |
f7f9143b JB |
11504 | if (from_tty) |
11505 | { | |
5af949e3 UW |
11506 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11507 | if (!loc_gdbarch) | |
11508 | loc_gdbarch = gdbarch; | |
11509 | ||
6c95b8df PA |
11510 | describe_other_breakpoints (loc_gdbarch, |
11511 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11512 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11513 | version for exception catchpoints, because two catchpoints | |
11514 | used for different exception names will use the same address. | |
11515 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11516 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11517 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11518 | the user what type of catchpoint it is. The above is good |
11519 | enough for now, though. */ | |
11520 | } | |
11521 | ||
28010a5d | 11522 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11523 | |
349774ef | 11524 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11525 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11526 | b->location = string_to_event_location (&addr_string, |
11527 | language_def (language_ada)); | |
f7f9143b | 11528 | b->language = language_ada; |
f7f9143b JB |
11529 | } |
11530 | ||
c906108c | 11531 | static void |
fba45db2 | 11532 | catch_command (char *arg, int from_tty) |
c906108c | 11533 | { |
44feb3ce | 11534 | error (_("Catch requires an event name.")); |
c906108c SS |
11535 | } |
11536 | \f | |
11537 | ||
11538 | static void | |
fba45db2 | 11539 | tcatch_command (char *arg, int from_tty) |
c906108c | 11540 | { |
44feb3ce | 11541 | error (_("Catch requires an event name.")); |
c906108c SS |
11542 | } |
11543 | ||
8a2c437b TT |
11544 | /* A qsort comparison function that sorts breakpoints in order. */ |
11545 | ||
11546 | static int | |
11547 | compare_breakpoints (const void *a, const void *b) | |
11548 | { | |
9a3c8263 | 11549 | const breakpoint_p *ba = (const breakpoint_p *) a; |
8a2c437b | 11550 | uintptr_t ua = (uintptr_t) *ba; |
9a3c8263 | 11551 | const breakpoint_p *bb = (const breakpoint_p *) b; |
8a2c437b TT |
11552 | uintptr_t ub = (uintptr_t) *bb; |
11553 | ||
11554 | if ((*ba)->number < (*bb)->number) | |
11555 | return -1; | |
11556 | else if ((*ba)->number > (*bb)->number) | |
11557 | return 1; | |
11558 | ||
11559 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11560 | the number 0. */ | |
11561 | if (ua < ub) | |
11562 | return -1; | |
94b0e70d | 11563 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11564 | } |
11565 | ||
80f8a6eb | 11566 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11567 | |
11568 | static void | |
fba45db2 | 11569 | clear_command (char *arg, int from_tty) |
c906108c | 11570 | { |
8a2c437b | 11571 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11572 | VEC(breakpoint_p) *found = 0; |
11573 | int ix; | |
c906108c | 11574 | int default_match; |
c906108c | 11575 | int i; |
8a2c437b | 11576 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c | 11577 | |
6c5b2ebe PA |
11578 | std::vector<symtab_and_line> decoded_sals; |
11579 | symtab_and_line last_sal; | |
11580 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11581 | if (arg) |
11582 | { | |
6c5b2ebe PA |
11583 | decoded_sals |
11584 | = decode_line_with_current_source (arg, | |
11585 | (DECODE_LINE_FUNFIRSTLINE | |
11586 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11587 | default_match = 0; |
6c5b2ebe | 11588 | sals = decoded_sals; |
c906108c SS |
11589 | } |
11590 | else | |
11591 | { | |
1bfeeb0f JL |
11592 | /* Set sal's line, symtab, pc, and pspace to the values |
11593 | corresponding to the last call to print_frame_info. If the | |
11594 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11595 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11596 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11597 | error (_("No source file specified.")); |
c906108c | 11598 | |
c906108c | 11599 | default_match = 1; |
6c5b2ebe | 11600 | sals = last_sal; |
c906108c SS |
11601 | } |
11602 | ||
4a64f543 MS |
11603 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11604 | seems, because all existing breakpoints typically have both | |
11605 | file/line and pc set. So, if clear is given file/line, we can | |
11606 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11607 | |
11608 | We only support clearing given the address explicitly | |
11609 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11610 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11611 | due to optimization, all in one block. |
4a64f543 MS |
11612 | |
11613 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11614 | PC corresponding to the same file:line, the breakpoint won't |
11615 | be cleared. We probably can still clear the breakpoint, but | |
11616 | since the other PC value is never presented to user, user | |
11617 | can only find it by guessing, and it does not seem important | |
11618 | to support that. */ | |
11619 | ||
4a64f543 MS |
11620 | /* For each line spec given, delete bps which correspond to it. Do |
11621 | it in two passes, solely to preserve the current behavior that | |
11622 | from_tty is forced true if we delete more than one | |
11623 | breakpoint. */ | |
c906108c | 11624 | |
80f8a6eb | 11625 | found = NULL; |
8a2c437b | 11626 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
6c5b2ebe | 11627 | for (const auto &sal : sals) |
c906108c | 11628 | { |
05cba821 JK |
11629 | const char *sal_fullname; |
11630 | ||
c906108c | 11631 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11632 | If line given (pc == 0), clear all bpts on specified line. |
11633 | If defaulting, clear all bpts on default line | |
c906108c | 11634 | or at default pc. |
c5aa993b JM |
11635 | |
11636 | defaulting sal.pc != 0 tests to do | |
11637 | ||
11638 | 0 1 pc | |
11639 | 1 1 pc _and_ line | |
11640 | 0 0 line | |
11641 | 1 0 <can't happen> */ | |
c906108c | 11642 | |
05cba821 JK |
11643 | sal_fullname = (sal.symtab == NULL |
11644 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11645 | |
4a64f543 | 11646 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11647 | ALL_BREAKPOINTS (b) |
c5aa993b | 11648 | { |
0d381245 | 11649 | int match = 0; |
4a64f543 | 11650 | /* Are we going to delete b? */ |
cc60f2e3 | 11651 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11652 | { |
11653 | struct bp_location *loc = b->loc; | |
11654 | for (; loc; loc = loc->next) | |
11655 | { | |
f8eba3c6 TT |
11656 | /* If the user specified file:line, don't allow a PC |
11657 | match. This matches historical gdb behavior. */ | |
11658 | int pc_match = (!sal.explicit_line | |
11659 | && sal.pc | |
11660 | && (loc->pspace == sal.pspace) | |
11661 | && (loc->address == sal.pc) | |
11662 | && (!section_is_overlay (loc->section) | |
11663 | || loc->section == sal.section)); | |
4aac40c8 TT |
11664 | int line_match = 0; |
11665 | ||
11666 | if ((default_match || sal.explicit_line) | |
2f202fde | 11667 | && loc->symtab != NULL |
05cba821 | 11668 | && sal_fullname != NULL |
4aac40c8 | 11669 | && sal.pspace == loc->pspace |
05cba821 JK |
11670 | && loc->line_number == sal.line |
11671 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11672 | sal_fullname) == 0) | |
11673 | line_match = 1; | |
4aac40c8 | 11674 | |
0d381245 VP |
11675 | if (pc_match || line_match) |
11676 | { | |
11677 | match = 1; | |
11678 | break; | |
11679 | } | |
11680 | } | |
11681 | } | |
11682 | ||
11683 | if (match) | |
d6e956e5 | 11684 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11685 | } |
80f8a6eb | 11686 | } |
8a2c437b | 11687 | |
80f8a6eb | 11688 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11689 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11690 | { |
11691 | if (arg) | |
8a3fe4f8 | 11692 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11693 | else |
8a3fe4f8 | 11694 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11695 | } |
c906108c | 11696 | |
8a2c437b TT |
11697 | /* Remove duplicates from the vec. */ |
11698 | qsort (VEC_address (breakpoint_p, found), | |
11699 | VEC_length (breakpoint_p, found), | |
11700 | sizeof (breakpoint_p), | |
11701 | compare_breakpoints); | |
11702 | prev = VEC_index (breakpoint_p, found, 0); | |
11703 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11704 | { | |
11705 | if (b == prev) | |
11706 | { | |
11707 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11708 | --ix; | |
11709 | } | |
11710 | } | |
11711 | ||
d6e956e5 | 11712 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11713 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11714 | if (from_tty) |
a3f17187 | 11715 | { |
d6e956e5 | 11716 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11717 | printf_unfiltered (_("Deleted breakpoint ")); |
11718 | else | |
11719 | printf_unfiltered (_("Deleted breakpoints ")); | |
11720 | } | |
d6e956e5 VP |
11721 | |
11722 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11723 | { |
c5aa993b | 11724 | if (from_tty) |
d6e956e5 VP |
11725 | printf_unfiltered ("%d ", b->number); |
11726 | delete_breakpoint (b); | |
c906108c | 11727 | } |
80f8a6eb MS |
11728 | if (from_tty) |
11729 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11730 | |
11731 | do_cleanups (cleanups); | |
c906108c SS |
11732 | } |
11733 | \f | |
11734 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11735 | all breakpoints that are marked for deletion, whether hit or not. | |
11736 | This is called after any breakpoint is hit, or after errors. */ | |
11737 | ||
11738 | void | |
fba45db2 | 11739 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11740 | { |
35df4500 | 11741 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11742 | |
11743 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11744 | if (bs->breakpoint_at |
11745 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11746 | && bs->stop) |
f431efe5 | 11747 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11748 | |
35df4500 | 11749 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11750 | { |
b5de0fa7 | 11751 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11752 | delete_breakpoint (b); |
11753 | } | |
c906108c SS |
11754 | } |
11755 | ||
4a64f543 MS |
11756 | /* A comparison function for bp_location AP and BP being interfaced to |
11757 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11758 | does breakpoint_address_is_meaningful say for its OWNER), | |
1a853c52 | 11759 | secondarily by ordering first permanent elements and |
4a64f543 | 11760 | terciarily just ensuring the array is sorted stable way despite |
e5dd4106 | 11761 | qsort being an unstable algorithm. */ |
876fa593 JK |
11762 | |
11763 | static int | |
f5336ca5 | 11764 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11765 | { |
9a3c8263 SM |
11766 | const struct bp_location *a = *(const struct bp_location **) ap; |
11767 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11768 | |
11769 | if (a->address != b->address) | |
11770 | return (a->address > b->address) - (a->address < b->address); | |
11771 | ||
dea2aa5f LM |
11772 | /* Sort locations at the same address by their pspace number, keeping |
11773 | locations of the same inferior (in a multi-inferior environment) | |
11774 | grouped. */ | |
11775 | ||
11776 | if (a->pspace->num != b->pspace->num) | |
11777 | return ((a->pspace->num > b->pspace->num) | |
11778 | - (a->pspace->num < b->pspace->num)); | |
11779 | ||
876fa593 | 11780 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11781 | if (a->permanent != b->permanent) |
11782 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11783 | |
c56a97f9 JK |
11784 | /* Make the internal GDB representation stable across GDB runs |
11785 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11786 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11787 | |
11788 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11789 | return ((a->owner->number > b->owner->number) |
11790 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11791 | |
11792 | return (a > b) - (a < b); | |
11793 | } | |
11794 | ||
f5336ca5 PA |
11795 | /* Set bp_locations_placed_address_before_address_max and |
11796 | bp_locations_shadow_len_after_address_max according to the current | |
11797 | content of the bp_locations array. */ | |
f7545552 TT |
11798 | |
11799 | static void | |
f5336ca5 | 11800 | bp_locations_target_extensions_update (void) |
f7545552 | 11801 | { |
876fa593 JK |
11802 | struct bp_location *bl, **blp_tmp; |
11803 | ||
f5336ca5 PA |
11804 | bp_locations_placed_address_before_address_max = 0; |
11805 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11806 | |
11807 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11808 | { | |
11809 | CORE_ADDR start, end, addr; | |
11810 | ||
11811 | if (!bp_location_has_shadow (bl)) | |
11812 | continue; | |
11813 | ||
11814 | start = bl->target_info.placed_address; | |
11815 | end = start + bl->target_info.shadow_len; | |
11816 | ||
11817 | gdb_assert (bl->address >= start); | |
11818 | addr = bl->address - start; | |
f5336ca5 PA |
11819 | if (addr > bp_locations_placed_address_before_address_max) |
11820 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11821 | |
11822 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11823 | ||
11824 | gdb_assert (bl->address < end); | |
11825 | addr = end - bl->address; | |
f5336ca5 PA |
11826 | if (addr > bp_locations_shadow_len_after_address_max) |
11827 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11828 | } |
f7545552 TT |
11829 | } |
11830 | ||
1e4d1764 YQ |
11831 | /* Download tracepoint locations if they haven't been. */ |
11832 | ||
11833 | static void | |
11834 | download_tracepoint_locations (void) | |
11835 | { | |
7ed2c994 | 11836 | struct breakpoint *b; |
dd2e65cc | 11837 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11838 | |
5ed8105e | 11839 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11840 | |
7ed2c994 | 11841 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11842 | { |
7ed2c994 | 11843 | struct bp_location *bl; |
1e4d1764 | 11844 | struct tracepoint *t; |
f2a8bc8a | 11845 | int bp_location_downloaded = 0; |
1e4d1764 | 11846 | |
7ed2c994 | 11847 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11848 | ? !may_insert_fast_tracepoints |
11849 | : !may_insert_tracepoints)) | |
11850 | continue; | |
11851 | ||
dd2e65cc YQ |
11852 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11853 | { | |
11854 | if (target_can_download_tracepoint ()) | |
11855 | can_download_tracepoint = TRIBOOL_TRUE; | |
11856 | else | |
11857 | can_download_tracepoint = TRIBOOL_FALSE; | |
11858 | } | |
11859 | ||
11860 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11861 | break; | |
11862 | ||
7ed2c994 YQ |
11863 | for (bl = b->loc; bl; bl = bl->next) |
11864 | { | |
11865 | /* In tracepoint, locations are _never_ duplicated, so | |
11866 | should_be_inserted is equivalent to | |
11867 | unduplicated_should_be_inserted. */ | |
11868 | if (!should_be_inserted (bl) || bl->inserted) | |
11869 | continue; | |
1e4d1764 | 11870 | |
7ed2c994 | 11871 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11872 | |
7ed2c994 | 11873 | target_download_tracepoint (bl); |
1e4d1764 | 11874 | |
7ed2c994 | 11875 | bl->inserted = 1; |
f2a8bc8a | 11876 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11877 | } |
11878 | t = (struct tracepoint *) b; | |
11879 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
11880 | if (bp_location_downloaded) |
11881 | observer_notify_breakpoint_modified (b); | |
1e4d1764 | 11882 | } |
1e4d1764 YQ |
11883 | } |
11884 | ||
934709f0 PW |
11885 | /* Swap the insertion/duplication state between two locations. */ |
11886 | ||
11887 | static void | |
11888 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11889 | { | |
11890 | const int left_inserted = left->inserted; | |
11891 | const int left_duplicate = left->duplicate; | |
b775012e | 11892 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11893 | const struct bp_target_info left_target_info = left->target_info; |
11894 | ||
1e4d1764 YQ |
11895 | /* Locations of tracepoints can never be duplicated. */ |
11896 | if (is_tracepoint (left->owner)) | |
11897 | gdb_assert (!left->duplicate); | |
11898 | if (is_tracepoint (right->owner)) | |
11899 | gdb_assert (!right->duplicate); | |
11900 | ||
934709f0 PW |
11901 | left->inserted = right->inserted; |
11902 | left->duplicate = right->duplicate; | |
b775012e | 11903 | left->needs_update = right->needs_update; |
934709f0 PW |
11904 | left->target_info = right->target_info; |
11905 | right->inserted = left_inserted; | |
11906 | right->duplicate = left_duplicate; | |
b775012e | 11907 | right->needs_update = left_needs_update; |
934709f0 PW |
11908 | right->target_info = left_target_info; |
11909 | } | |
11910 | ||
b775012e LM |
11911 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11912 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11913 | conditions on the target's side. Such conditions need to be updated on | |
11914 | the target. */ | |
11915 | ||
11916 | static void | |
11917 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11918 | { | |
11919 | struct bp_location **locp = NULL, **loc2p; | |
11920 | struct bp_location *loc; | |
11921 | CORE_ADDR address = 0; | |
11922 | int pspace_num; | |
11923 | ||
11924 | address = bl->address; | |
11925 | pspace_num = bl->pspace->num; | |
11926 | ||
11927 | /* This is only meaningful if the target is | |
11928 | evaluating conditions and if the user has | |
11929 | opted for condition evaluation on the target's | |
11930 | side. */ | |
11931 | if (gdb_evaluates_breakpoint_condition_p () | |
11932 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11933 | return; | |
11934 | ||
11935 | /* Flag all breakpoint locations with this address and | |
11936 | the same program space as the location | |
11937 | as "its condition has changed". We need to | |
11938 | update the conditions on the target's side. */ | |
11939 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11940 | { | |
11941 | loc = *loc2p; | |
11942 | ||
11943 | if (!is_breakpoint (loc->owner) | |
11944 | || pspace_num != loc->pspace->num) | |
11945 | continue; | |
11946 | ||
11947 | /* Flag the location appropriately. We use a different state to | |
11948 | let everyone know that we already updated the set of locations | |
11949 | with addr bl->address and program space bl->pspace. This is so | |
11950 | we don't have to keep calling these functions just to mark locations | |
11951 | that have already been marked. */ | |
11952 | loc->condition_changed = condition_updated; | |
11953 | ||
11954 | /* Free the agent expression bytecode as well. We will compute | |
11955 | it later on. */ | |
833177a4 | 11956 | loc->cond_bytecode.reset (); |
b775012e LM |
11957 | } |
11958 | } | |
44702360 PA |
11959 | /* Called whether new breakpoints are created, or existing breakpoints |
11960 | deleted, to update the global location list and recompute which | |
11961 | locations are duplicate of which. | |
b775012e | 11962 | |
04086b45 PA |
11963 | The INSERT_MODE flag determines whether locations may not, may, or |
11964 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11965 | info. */ | |
b60e7edf | 11966 | |
0d381245 | 11967 | static void |
44702360 | 11968 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11969 | { |
74960c60 | 11970 | struct breakpoint *b; |
876fa593 | 11971 | struct bp_location **locp, *loc; |
f7545552 | 11972 | struct cleanup *cleanups; |
b775012e LM |
11973 | /* Last breakpoint location address that was marked for update. */ |
11974 | CORE_ADDR last_addr = 0; | |
11975 | /* Last breakpoint location program space that was marked for update. */ | |
11976 | int last_pspace_num = -1; | |
f7545552 | 11977 | |
2d134ed3 PA |
11978 | /* Used in the duplicates detection below. When iterating over all |
11979 | bp_locations, points to the first bp_location of a given address. | |
11980 | Breakpoints and watchpoints of different types are never | |
11981 | duplicates of each other. Keep one pointer for each type of | |
11982 | breakpoint/watchpoint, so we only need to loop over all locations | |
11983 | once. */ | |
11984 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11985 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11986 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11987 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11988 | |
f5336ca5 PA |
11989 | /* Saved former bp_locations array which we compare against the newly |
11990 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
11991 | struct bp_location **old_locations, **old_locp; | |
11992 | unsigned old_locations_count; | |
876fa593 | 11993 | |
f5336ca5 PA |
11994 | old_locations = bp_locations; |
11995 | old_locations_count = bp_locations_count; | |
11996 | bp_locations = NULL; | |
11997 | bp_locations_count = 0; | |
11998 | cleanups = make_cleanup (xfree, old_locations); | |
0d381245 | 11999 | |
74960c60 | 12000 | ALL_BREAKPOINTS (b) |
876fa593 | 12001 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 12002 | bp_locations_count++; |
876fa593 | 12003 | |
f5336ca5 PA |
12004 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
12005 | locp = bp_locations; | |
876fa593 JK |
12006 | ALL_BREAKPOINTS (b) |
12007 | for (loc = b->loc; loc; loc = loc->next) | |
12008 | *locp++ = loc; | |
f5336ca5 PA |
12009 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
12010 | bp_locations_compare); | |
876fa593 | 12011 | |
f5336ca5 | 12012 | bp_locations_target_extensions_update (); |
74960c60 | 12013 | |
4a64f543 MS |
12014 | /* Identify bp_location instances that are no longer present in the |
12015 | new list, and therefore should be freed. Note that it's not | |
12016 | necessary that those locations should be removed from inferior -- | |
12017 | if there's another location at the same address (previously | |
12018 | marked as duplicate), we don't need to remove/insert the | |
12019 | location. | |
876fa593 | 12020 | |
4a64f543 MS |
12021 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12022 | and former bp_location array state respectively. */ | |
876fa593 | 12023 | |
f5336ca5 PA |
12024 | locp = bp_locations; |
12025 | for (old_locp = old_locations; | |
12026 | old_locp < old_locations + old_locations_count; | |
876fa593 | 12027 | old_locp++) |
74960c60 | 12028 | { |
876fa593 | 12029 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12030 | struct bp_location **loc2p; |
876fa593 | 12031 | |
e5dd4106 | 12032 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12033 | not, we have to free it. */ |
c7d46a38 | 12034 | int found_object = 0; |
20874c92 VP |
12035 | /* Tells if the location should remain inserted in the target. */ |
12036 | int keep_in_target = 0; | |
12037 | int removed = 0; | |
876fa593 | 12038 | |
4a64f543 MS |
12039 | /* Skip LOCP entries which will definitely never be needed. |
12040 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 12041 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 12042 | && (*locp)->address < old_loc->address) |
876fa593 | 12043 | locp++; |
c7d46a38 PA |
12044 | |
12045 | for (loc2p = locp; | |
f5336ca5 | 12046 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
12047 | && (*loc2p)->address == old_loc->address); |
12048 | loc2p++) | |
12049 | { | |
b775012e LM |
12050 | /* Check if this is a new/duplicated location or a duplicated |
12051 | location that had its condition modified. If so, we want to send | |
12052 | its condition to the target if evaluation of conditions is taking | |
12053 | place there. */ | |
12054 | if ((*loc2p)->condition_changed == condition_modified | |
12055 | && (last_addr != old_loc->address | |
12056 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12057 | { |
b775012e LM |
12058 | force_breakpoint_reinsertion (*loc2p); |
12059 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12060 | } |
b775012e LM |
12061 | |
12062 | if (*loc2p == old_loc) | |
12063 | found_object = 1; | |
c7d46a38 | 12064 | } |
74960c60 | 12065 | |
b775012e LM |
12066 | /* We have already handled this address, update it so that we don't |
12067 | have to go through updates again. */ | |
12068 | last_addr = old_loc->address; | |
12069 | ||
12070 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12071 | if (!found_object) | |
12072 | force_breakpoint_reinsertion (old_loc); | |
12073 | ||
4a64f543 MS |
12074 | /* If this location is no longer present, and inserted, look if |
12075 | there's maybe a new location at the same address. If so, | |
12076 | mark that one inserted, and don't remove this one. This is | |
12077 | needed so that we don't have a time window where a breakpoint | |
12078 | at certain location is not inserted. */ | |
74960c60 | 12079 | |
876fa593 | 12080 | if (old_loc->inserted) |
0d381245 | 12081 | { |
4a64f543 MS |
12082 | /* If the location is inserted now, we might have to remove |
12083 | it. */ | |
74960c60 | 12084 | |
876fa593 | 12085 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12086 | { |
4a64f543 MS |
12087 | /* The location is still present in the location list, |
12088 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12089 | keep_in_target = 1; |
74960c60 VP |
12090 | } |
12091 | else | |
12092 | { | |
b775012e LM |
12093 | /* This location still exists, but it won't be kept in the |
12094 | target since it may have been disabled. We proceed to | |
12095 | remove its target-side condition. */ | |
12096 | ||
4a64f543 MS |
12097 | /* The location is either no longer present, or got |
12098 | disabled. See if there's another location at the | |
12099 | same address, in which case we don't need to remove | |
12100 | this one from the target. */ | |
876fa593 | 12101 | |
2bdf28a0 | 12102 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12103 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12104 | { | |
876fa593 | 12105 | for (loc2p = locp; |
f5336ca5 | 12106 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 12107 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
12108 | loc2p++) |
12109 | { | |
12110 | struct bp_location *loc2 = *loc2p; | |
12111 | ||
2d134ed3 | 12112 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12113 | { |
85d721b8 PA |
12114 | /* Read watchpoint locations are switched to |
12115 | access watchpoints, if the former are not | |
12116 | supported, but the latter are. */ | |
12117 | if (is_hardware_watchpoint (old_loc->owner)) | |
12118 | { | |
12119 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12120 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12121 | } | |
12122 | ||
934709f0 PW |
12123 | /* loc2 is a duplicated location. We need to check |
12124 | if it should be inserted in case it will be | |
12125 | unduplicated. */ | |
12126 | if (loc2 != old_loc | |
12127 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12128 | { |
934709f0 | 12129 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12130 | keep_in_target = 1; |
12131 | break; | |
12132 | } | |
876fa593 JK |
12133 | } |
12134 | } | |
12135 | } | |
74960c60 VP |
12136 | } |
12137 | ||
20874c92 VP |
12138 | if (!keep_in_target) |
12139 | { | |
834c0d03 | 12140 | if (remove_breakpoint (old_loc)) |
20874c92 | 12141 | { |
4a64f543 MS |
12142 | /* This is just about all we can do. We could keep |
12143 | this location on the global list, and try to | |
12144 | remove it next time, but there's no particular | |
12145 | reason why we will succeed next time. | |
20874c92 | 12146 | |
4a64f543 MS |
12147 | Note that at this point, old_loc->owner is still |
12148 | valid, as delete_breakpoint frees the breakpoint | |
12149 | only after calling us. */ | |
3e43a32a MS |
12150 | printf_filtered (_("warning: Error removing " |
12151 | "breakpoint %d\n"), | |
876fa593 | 12152 | old_loc->owner->number); |
20874c92 VP |
12153 | } |
12154 | removed = 1; | |
12155 | } | |
0d381245 | 12156 | } |
74960c60 VP |
12157 | |
12158 | if (!found_object) | |
1c5cfe86 | 12159 | { |
fbea99ea | 12160 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12161 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12162 | { |
db82e815 PA |
12163 | /* This location was removed from the target. In |
12164 | non-stop mode, a race condition is possible where | |
12165 | we've removed a breakpoint, but stop events for that | |
12166 | breakpoint are already queued and will arrive later. | |
12167 | We apply an heuristic to be able to distinguish such | |
12168 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12169 | breakpoint location for a bit, and will retire it | |
12170 | after we see some number of events. The theory here | |
12171 | is that reporting of events should, "on the average", | |
12172 | be fair, so after a while we'll see events from all | |
12173 | threads that have anything of interest, and no longer | |
12174 | need to keep this breakpoint location around. We | |
12175 | don't hold locations forever so to reduce chances of | |
12176 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12177 | SIGTRAP. | |
12178 | ||
12179 | The heuristic failing can be disastrous on | |
12180 | decr_pc_after_break targets. | |
12181 | ||
12182 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12183 | if we fail to recognize a late breakpoint SIGTRAP, | |
12184 | because events_till_retirement has reached 0 too | |
12185 | soon, we'll fail to do the PC adjustment, and report | |
12186 | a random SIGTRAP to the user. When the user resumes | |
12187 | the inferior, it will most likely immediately crash | |
2dec564e | 12188 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12189 | corrupted, because of being resumed e.g., in the |
12190 | middle of a multi-byte instruction, or skipped a | |
12191 | one-byte instruction. This was actually seen happen | |
12192 | on native x86-linux, and should be less rare on | |
12193 | targets that do not support new thread events, like | |
12194 | remote, due to the heuristic depending on | |
12195 | thread_count. | |
12196 | ||
12197 | Mistaking a random SIGTRAP for a breakpoint trap | |
12198 | causes similar symptoms (PC adjustment applied when | |
12199 | it shouldn't), but then again, playing with SIGTRAPs | |
12200 | behind the debugger's back is asking for trouble. | |
12201 | ||
12202 | Since hardware watchpoint traps are always | |
12203 | distinguishable from other traps, so we don't need to | |
12204 | apply keep hardware watchpoint moribund locations | |
12205 | around. We simply always ignore hardware watchpoint | |
12206 | traps we can no longer explain. */ | |
12207 | ||
876fa593 JK |
12208 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12209 | old_loc->owner = NULL; | |
20874c92 | 12210 | |
876fa593 | 12211 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12212 | } |
12213 | else | |
f431efe5 PA |
12214 | { |
12215 | old_loc->owner = NULL; | |
12216 | decref_bp_location (&old_loc); | |
12217 | } | |
20874c92 | 12218 | } |
74960c60 | 12219 | } |
1c5cfe86 | 12220 | |
348d480f PA |
12221 | /* Rescan breakpoints at the same address and section, marking the |
12222 | first one as "first" and any others as "duplicates". This is so | |
12223 | that the bpt instruction is only inserted once. If we have a | |
12224 | permanent breakpoint at the same place as BPT, make that one the | |
12225 | official one, and the rest as duplicates. Permanent breakpoints | |
12226 | are sorted first for the same address. | |
12227 | ||
12228 | Do the same for hardware watchpoints, but also considering the | |
12229 | watchpoint's type (regular/access/read) and length. */ | |
12230 | ||
12231 | bp_loc_first = NULL; | |
12232 | wp_loc_first = NULL; | |
12233 | awp_loc_first = NULL; | |
12234 | rwp_loc_first = NULL; | |
12235 | ALL_BP_LOCATIONS (loc, locp) | |
12236 | { | |
12237 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12238 | non-NULL. */ | |
348d480f | 12239 | struct bp_location **loc_first_p; |
d3fbdd86 | 12240 | b = loc->owner; |
348d480f | 12241 | |
6f380991 | 12242 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12243 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12244 | /* Don't detect duplicate for tracepoint locations because they are |
12245 | never duplicated. See the comments in field `duplicate' of | |
12246 | `struct bp_location'. */ | |
348d480f | 12247 | || is_tracepoint (b)) |
b775012e LM |
12248 | { |
12249 | /* Clear the condition modification flag. */ | |
12250 | loc->condition_changed = condition_unchanged; | |
12251 | continue; | |
12252 | } | |
348d480f | 12253 | |
348d480f PA |
12254 | if (b->type == bp_hardware_watchpoint) |
12255 | loc_first_p = &wp_loc_first; | |
12256 | else if (b->type == bp_read_watchpoint) | |
12257 | loc_first_p = &rwp_loc_first; | |
12258 | else if (b->type == bp_access_watchpoint) | |
12259 | loc_first_p = &awp_loc_first; | |
12260 | else | |
12261 | loc_first_p = &bp_loc_first; | |
12262 | ||
12263 | if (*loc_first_p == NULL | |
12264 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12265 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12266 | { | |
12267 | *loc_first_p = loc; | |
12268 | loc->duplicate = 0; | |
b775012e LM |
12269 | |
12270 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12271 | { | |
12272 | loc->needs_update = 1; | |
12273 | /* Clear the condition modification flag. */ | |
12274 | loc->condition_changed = condition_unchanged; | |
12275 | } | |
348d480f PA |
12276 | continue; |
12277 | } | |
12278 | ||
934709f0 PW |
12279 | |
12280 | /* This and the above ensure the invariant that the first location | |
12281 | is not duplicated, and is the inserted one. | |
12282 | All following are marked as duplicated, and are not inserted. */ | |
12283 | if (loc->inserted) | |
12284 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12285 | loc->duplicate = 1; |
12286 | ||
b775012e LM |
12287 | /* Clear the condition modification flag. */ |
12288 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12289 | } |
12290 | ||
a25a5a45 | 12291 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12292 | { |
04086b45 | 12293 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12294 | insert_breakpoint_locations (); |
12295 | else | |
12296 | { | |
44702360 PA |
12297 | /* Even though the caller told us to not insert new |
12298 | locations, we may still need to update conditions on the | |
12299 | target's side of breakpoints that were already inserted | |
12300 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12301 | only update conditions for locations that are marked |
12302 | "needs_update". */ | |
12303 | update_inserted_breakpoint_locations (); | |
12304 | } | |
12305 | } | |
348d480f | 12306 | |
04086b45 | 12307 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 YQ |
12308 | download_tracepoint_locations (); |
12309 | ||
348d480f PA |
12310 | do_cleanups (cleanups); |
12311 | } | |
12312 | ||
12313 | void | |
12314 | breakpoint_retire_moribund (void) | |
12315 | { | |
12316 | struct bp_location *loc; | |
12317 | int ix; | |
12318 | ||
12319 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12320 | if (--(loc->events_till_retirement) == 0) | |
12321 | { | |
12322 | decref_bp_location (&loc); | |
12323 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12324 | --ix; | |
12325 | } | |
12326 | } | |
12327 | ||
12328 | static void | |
44702360 | 12329 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12330 | { |
348d480f | 12331 | |
492d29ea PA |
12332 | TRY |
12333 | { | |
12334 | update_global_location_list (insert_mode); | |
12335 | } | |
12336 | CATCH (e, RETURN_MASK_ERROR) | |
12337 | { | |
12338 | } | |
12339 | END_CATCH | |
348d480f PA |
12340 | } |
12341 | ||
12342 | /* Clear BKP from a BPS. */ | |
12343 | ||
12344 | static void | |
12345 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12346 | { | |
12347 | bpstat bs; | |
12348 | ||
12349 | for (bs = bps; bs; bs = bs->next) | |
12350 | if (bs->breakpoint_at == bpt) | |
12351 | { | |
12352 | bs->breakpoint_at = NULL; | |
12353 | bs->old_val = NULL; | |
12354 | /* bs->commands will be freed later. */ | |
12355 | } | |
12356 | } | |
12357 | ||
12358 | /* Callback for iterate_over_threads. */ | |
12359 | static int | |
12360 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12361 | { | |
9a3c8263 | 12362 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12363 | |
12364 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12365 | return 0; | |
12366 | } | |
12367 | ||
12368 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12369 | callbacks. */ | |
12370 | ||
12371 | static void | |
12372 | say_where (struct breakpoint *b) | |
12373 | { | |
12374 | struct value_print_options opts; | |
12375 | ||
12376 | get_user_print_options (&opts); | |
12377 | ||
12378 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12379 | single string. */ | |
12380 | if (b->loc == NULL) | |
12381 | { | |
f00aae0f KS |
12382 | /* For pending locations, the output differs slightly based |
12383 | on b->extra_string. If this is non-NULL, it contains either | |
12384 | a condition or dprintf arguments. */ | |
12385 | if (b->extra_string == NULL) | |
12386 | { | |
12387 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12388 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12389 | } |
12390 | else if (b->type == bp_dprintf) | |
12391 | { | |
12392 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12393 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12394 | b->extra_string); |
12395 | } | |
12396 | else | |
12397 | { | |
12398 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12399 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12400 | b->extra_string); |
12401 | } | |
348d480f PA |
12402 | } |
12403 | else | |
12404 | { | |
2f202fde | 12405 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12406 | { |
12407 | printf_filtered (" at "); | |
12408 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12409 | gdb_stdout); | |
12410 | } | |
2f202fde | 12411 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12412 | { |
12413 | /* If there is a single location, we can print the location | |
12414 | more nicely. */ | |
12415 | if (b->loc->next == NULL) | |
12416 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12417 | symtab_to_filename_for_display (b->loc->symtab), |
12418 | b->loc->line_number); | |
f8eba3c6 TT |
12419 | else |
12420 | /* This is not ideal, but each location may have a | |
12421 | different file name, and this at least reflects the | |
12422 | real situation somewhat. */ | |
f00aae0f | 12423 | printf_filtered (": %s.", |
d28cd78a | 12424 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12425 | } |
348d480f PA |
12426 | |
12427 | if (b->loc->next) | |
12428 | { | |
12429 | struct bp_location *loc = b->loc; | |
12430 | int n = 0; | |
12431 | for (; loc; loc = loc->next) | |
12432 | ++n; | |
12433 | printf_filtered (" (%d locations)", n); | |
12434 | } | |
12435 | } | |
12436 | } | |
12437 | ||
348d480f PA |
12438 | /* Default bp_location_ops methods. */ |
12439 | ||
12440 | static void | |
12441 | bp_location_dtor (struct bp_location *self) | |
12442 | { | |
348d480f PA |
12443 | xfree (self->function_name); |
12444 | } | |
12445 | ||
12446 | static const struct bp_location_ops bp_location_ops = | |
12447 | { | |
12448 | bp_location_dtor | |
12449 | }; | |
12450 | ||
c1fc2657 | 12451 | /* Destructor for the breakpoint base class. */ |
348d480f | 12452 | |
c1fc2657 | 12453 | breakpoint::~breakpoint () |
348d480f | 12454 | { |
c1fc2657 SM |
12455 | xfree (this->cond_string); |
12456 | xfree (this->extra_string); | |
12457 | xfree (this->filter); | |
348d480f PA |
12458 | } |
12459 | ||
2060206e PA |
12460 | static struct bp_location * |
12461 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12462 | { |
5625a286 | 12463 | return new bp_location (&bp_location_ops, self); |
348d480f PA |
12464 | } |
12465 | ||
2060206e PA |
12466 | static void |
12467 | base_breakpoint_re_set (struct breakpoint *b) | |
12468 | { | |
12469 | /* Nothing to re-set. */ | |
12470 | } | |
12471 | ||
12472 | #define internal_error_pure_virtual_called() \ | |
12473 | gdb_assert_not_reached ("pure virtual function called") | |
12474 | ||
12475 | static int | |
12476 | base_breakpoint_insert_location (struct bp_location *bl) | |
12477 | { | |
12478 | internal_error_pure_virtual_called (); | |
12479 | } | |
12480 | ||
12481 | static int | |
73971819 PA |
12482 | base_breakpoint_remove_location (struct bp_location *bl, |
12483 | enum remove_bp_reason reason) | |
2060206e PA |
12484 | { |
12485 | internal_error_pure_virtual_called (); | |
12486 | } | |
12487 | ||
12488 | static int | |
12489 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12490 | struct address_space *aspace, | |
09ac7c10 TT |
12491 | CORE_ADDR bp_addr, |
12492 | const struct target_waitstatus *ws) | |
2060206e PA |
12493 | { |
12494 | internal_error_pure_virtual_called (); | |
12495 | } | |
12496 | ||
12497 | static void | |
12498 | base_breakpoint_check_status (bpstat bs) | |
12499 | { | |
12500 | /* Always stop. */ | |
12501 | } | |
12502 | ||
12503 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12504 | errors. */ | |
12505 | ||
12506 | static int | |
12507 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12508 | { | |
12509 | internal_error_pure_virtual_called (); | |
12510 | } | |
12511 | ||
12512 | /* A "resources_needed" breakpoint_ops method that just internal | |
12513 | errors. */ | |
12514 | ||
12515 | static int | |
12516 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12517 | { | |
12518 | internal_error_pure_virtual_called (); | |
12519 | } | |
12520 | ||
12521 | static enum print_stop_action | |
12522 | base_breakpoint_print_it (bpstat bs) | |
12523 | { | |
12524 | internal_error_pure_virtual_called (); | |
12525 | } | |
12526 | ||
12527 | static void | |
12528 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12529 | struct ui_out *uiout) | |
12530 | { | |
12531 | /* nothing */ | |
12532 | } | |
12533 | ||
12534 | static void | |
12535 | base_breakpoint_print_mention (struct breakpoint *b) | |
12536 | { | |
12537 | internal_error_pure_virtual_called (); | |
12538 | } | |
12539 | ||
12540 | static void | |
12541 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12542 | { | |
12543 | internal_error_pure_virtual_called (); | |
12544 | } | |
12545 | ||
983af33b | 12546 | static void |
f00aae0f KS |
12547 | base_breakpoint_create_sals_from_location |
12548 | (const struct event_location *location, | |
12549 | struct linespec_result *canonical, | |
12550 | enum bptype type_wanted) | |
983af33b SDJ |
12551 | { |
12552 | internal_error_pure_virtual_called (); | |
12553 | } | |
12554 | ||
12555 | static void | |
12556 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12557 | struct linespec_result *c, | |
e1e01040 PA |
12558 | gdb::unique_xmalloc_ptr<char> cond_string, |
12559 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12560 | enum bptype type_wanted, |
12561 | enum bpdisp disposition, | |
12562 | int thread, | |
12563 | int task, int ignore_count, | |
12564 | const struct breakpoint_ops *o, | |
12565 | int from_tty, int enabled, | |
44f238bb | 12566 | int internal, unsigned flags) |
983af33b SDJ |
12567 | { |
12568 | internal_error_pure_virtual_called (); | |
12569 | } | |
12570 | ||
6c5b2ebe | 12571 | static std::vector<symtab_and_line> |
f00aae0f KS |
12572 | base_breakpoint_decode_location (struct breakpoint *b, |
12573 | const struct event_location *location, | |
6c5b2ebe | 12574 | struct program_space *search_pspace) |
983af33b SDJ |
12575 | { |
12576 | internal_error_pure_virtual_called (); | |
12577 | } | |
12578 | ||
ab04a2af TT |
12579 | /* The default 'explains_signal' method. */ |
12580 | ||
47591c29 | 12581 | static int |
427cd150 | 12582 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12583 | { |
47591c29 | 12584 | return 1; |
ab04a2af TT |
12585 | } |
12586 | ||
9d6e6e84 HZ |
12587 | /* The default "after_condition_true" method. */ |
12588 | ||
12589 | static void | |
12590 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12591 | { | |
12592 | /* Nothing to do. */ | |
12593 | } | |
12594 | ||
ab04a2af | 12595 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12596 | { |
2060206e PA |
12597 | base_breakpoint_allocate_location, |
12598 | base_breakpoint_re_set, | |
12599 | base_breakpoint_insert_location, | |
12600 | base_breakpoint_remove_location, | |
12601 | base_breakpoint_breakpoint_hit, | |
12602 | base_breakpoint_check_status, | |
12603 | base_breakpoint_resources_needed, | |
12604 | base_breakpoint_works_in_software_mode, | |
12605 | base_breakpoint_print_it, | |
12606 | NULL, | |
12607 | base_breakpoint_print_one_detail, | |
12608 | base_breakpoint_print_mention, | |
983af33b | 12609 | base_breakpoint_print_recreate, |
5f700d83 | 12610 | base_breakpoint_create_sals_from_location, |
983af33b | 12611 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12612 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12613 | base_breakpoint_explains_signal, |
12614 | base_breakpoint_after_condition_true, | |
2060206e PA |
12615 | }; |
12616 | ||
12617 | /* Default breakpoint_ops methods. */ | |
12618 | ||
12619 | static void | |
348d480f PA |
12620 | bkpt_re_set (struct breakpoint *b) |
12621 | { | |
06edf0c0 | 12622 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12623 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12624 | { |
f00aae0f | 12625 | /* Anything without a location can't be re-set. */ |
348d480f | 12626 | delete_breakpoint (b); |
06edf0c0 | 12627 | return; |
348d480f | 12628 | } |
06edf0c0 PA |
12629 | |
12630 | breakpoint_re_set_default (b); | |
348d480f PA |
12631 | } |
12632 | ||
2060206e | 12633 | static int |
348d480f PA |
12634 | bkpt_insert_location (struct bp_location *bl) |
12635 | { | |
cd6c3b4f YQ |
12636 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12637 | ||
579c6ad9 | 12638 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12639 | bl->target_info.placed_address = addr; |
12640 | ||
348d480f | 12641 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12642 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12643 | else |
7c16b83e | 12644 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12645 | } |
12646 | ||
2060206e | 12647 | static int |
73971819 | 12648 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12649 | { |
12650 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12651 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12652 | else | |
73971819 | 12653 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12654 | } |
12655 | ||
2060206e | 12656 | static int |
348d480f | 12657 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12658 | struct address_space *aspace, CORE_ADDR bp_addr, |
12659 | const struct target_waitstatus *ws) | |
348d480f | 12660 | { |
09ac7c10 | 12661 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12662 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12663 | return 0; |
12664 | ||
348d480f PA |
12665 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12666 | aspace, bp_addr)) | |
12667 | return 0; | |
12668 | ||
12669 | if (overlay_debugging /* unmapped overlay section */ | |
12670 | && section_is_overlay (bl->section) | |
12671 | && !section_is_mapped (bl->section)) | |
12672 | return 0; | |
12673 | ||
12674 | return 1; | |
12675 | } | |
12676 | ||
cd1608cc PA |
12677 | static int |
12678 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
12679 | struct address_space *aspace, CORE_ADDR bp_addr, | |
12680 | const struct target_waitstatus *ws) | |
12681 | { | |
12682 | if (dprintf_style == dprintf_style_agent | |
12683 | && target_can_run_breakpoint_commands ()) | |
12684 | { | |
12685 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12686 | for this address it must be for a breakpoint that happens to | |
12687 | be set at the same address. */ | |
12688 | return 0; | |
12689 | } | |
12690 | ||
12691 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12692 | } | |
12693 | ||
2060206e | 12694 | static int |
348d480f PA |
12695 | bkpt_resources_needed (const struct bp_location *bl) |
12696 | { | |
12697 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12698 | ||
12699 | return 1; | |
12700 | } | |
12701 | ||
2060206e | 12702 | static enum print_stop_action |
348d480f PA |
12703 | bkpt_print_it (bpstat bs) |
12704 | { | |
348d480f PA |
12705 | struct breakpoint *b; |
12706 | const struct bp_location *bl; | |
001c8c33 | 12707 | int bp_temp; |
79a45e25 | 12708 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12709 | |
12710 | gdb_assert (bs->bp_location_at != NULL); | |
12711 | ||
12712 | bl = bs->bp_location_at; | |
12713 | b = bs->breakpoint_at; | |
12714 | ||
001c8c33 PA |
12715 | bp_temp = b->disposition == disp_del; |
12716 | if (bl->address != bl->requested_address) | |
12717 | breakpoint_adjustment_warning (bl->requested_address, | |
12718 | bl->address, | |
12719 | b->number, 1); | |
12720 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12721 | maybe_print_thread_hit_breakpoint (uiout); |
12722 | ||
001c8c33 | 12723 | if (bp_temp) |
112e8700 | 12724 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12725 | else |
112e8700 SM |
12726 | uiout->text ("Breakpoint "); |
12727 | if (uiout->is_mi_like_p ()) | |
348d480f | 12728 | { |
112e8700 | 12729 | uiout->field_string ("reason", |
001c8c33 | 12730 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12731 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12732 | } |
112e8700 SM |
12733 | uiout->field_int ("bkptno", b->number); |
12734 | uiout->text (", "); | |
06edf0c0 | 12735 | |
001c8c33 | 12736 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12737 | } |
12738 | ||
2060206e | 12739 | static void |
06edf0c0 PA |
12740 | bkpt_print_mention (struct breakpoint *b) |
12741 | { | |
112e8700 | 12742 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12743 | return; |
12744 | ||
12745 | switch (b->type) | |
12746 | { | |
12747 | case bp_breakpoint: | |
12748 | case bp_gnu_ifunc_resolver: | |
12749 | if (b->disposition == disp_del) | |
12750 | printf_filtered (_("Temporary breakpoint")); | |
12751 | else | |
12752 | printf_filtered (_("Breakpoint")); | |
12753 | printf_filtered (_(" %d"), b->number); | |
12754 | if (b->type == bp_gnu_ifunc_resolver) | |
12755 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12756 | break; | |
12757 | case bp_hardware_breakpoint: | |
12758 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12759 | break; | |
e7e0cddf SS |
12760 | case bp_dprintf: |
12761 | printf_filtered (_("Dprintf %d"), b->number); | |
12762 | break; | |
06edf0c0 PA |
12763 | } |
12764 | ||
12765 | say_where (b); | |
12766 | } | |
12767 | ||
2060206e | 12768 | static void |
06edf0c0 PA |
12769 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12770 | { | |
12771 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12772 | fprintf_unfiltered (fp, "tbreak"); | |
12773 | else if (tp->type == bp_breakpoint) | |
12774 | fprintf_unfiltered (fp, "break"); | |
12775 | else if (tp->type == bp_hardware_breakpoint | |
12776 | && tp->disposition == disp_del) | |
12777 | fprintf_unfiltered (fp, "thbreak"); | |
12778 | else if (tp->type == bp_hardware_breakpoint) | |
12779 | fprintf_unfiltered (fp, "hbreak"); | |
12780 | else | |
12781 | internal_error (__FILE__, __LINE__, | |
12782 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12783 | ||
f00aae0f | 12784 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12785 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12786 | |
12787 | /* Print out extra_string if this breakpoint is pending. It might | |
12788 | contain, for example, conditions that were set by the user. */ | |
12789 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12790 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12791 | ||
dd11a36c | 12792 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12793 | } |
12794 | ||
983af33b | 12795 | static void |
f00aae0f KS |
12796 | bkpt_create_sals_from_location (const struct event_location *location, |
12797 | struct linespec_result *canonical, | |
12798 | enum bptype type_wanted) | |
983af33b | 12799 | { |
f00aae0f | 12800 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12801 | } |
12802 | ||
12803 | static void | |
12804 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12805 | struct linespec_result *canonical, | |
e1e01040 PA |
12806 | gdb::unique_xmalloc_ptr<char> cond_string, |
12807 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12808 | enum bptype type_wanted, |
12809 | enum bpdisp disposition, | |
12810 | int thread, | |
12811 | int task, int ignore_count, | |
12812 | const struct breakpoint_ops *ops, | |
12813 | int from_tty, int enabled, | |
44f238bb | 12814 | int internal, unsigned flags) |
983af33b | 12815 | { |
023fa29b | 12816 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12817 | std::move (cond_string), |
12818 | std::move (extra_string), | |
e7e0cddf | 12819 | type_wanted, |
983af33b SDJ |
12820 | disposition, thread, task, |
12821 | ignore_count, ops, from_tty, | |
44f238bb | 12822 | enabled, internal, flags); |
983af33b SDJ |
12823 | } |
12824 | ||
6c5b2ebe | 12825 | static std::vector<symtab_and_line> |
f00aae0f KS |
12826 | bkpt_decode_location (struct breakpoint *b, |
12827 | const struct event_location *location, | |
6c5b2ebe | 12828 | struct program_space *search_pspace) |
983af33b | 12829 | { |
6c5b2ebe | 12830 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12831 | } |
12832 | ||
06edf0c0 PA |
12833 | /* Virtual table for internal breakpoints. */ |
12834 | ||
12835 | static void | |
12836 | internal_bkpt_re_set (struct breakpoint *b) | |
12837 | { | |
12838 | switch (b->type) | |
12839 | { | |
12840 | /* Delete overlay event and longjmp master breakpoints; they | |
12841 | will be reset later by breakpoint_re_set. */ | |
12842 | case bp_overlay_event: | |
12843 | case bp_longjmp_master: | |
12844 | case bp_std_terminate_master: | |
12845 | case bp_exception_master: | |
12846 | delete_breakpoint (b); | |
12847 | break; | |
12848 | ||
12849 | /* This breakpoint is special, it's set up when the inferior | |
12850 | starts and we really don't want to touch it. */ | |
12851 | case bp_shlib_event: | |
12852 | ||
12853 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12854 | it is set up, we do not want to touch it. */ | |
12855 | case bp_thread_event: | |
12856 | break; | |
12857 | } | |
12858 | } | |
12859 | ||
12860 | static void | |
12861 | internal_bkpt_check_status (bpstat bs) | |
12862 | { | |
a9b3a50f PA |
12863 | if (bs->breakpoint_at->type == bp_shlib_event) |
12864 | { | |
12865 | /* If requested, stop when the dynamic linker notifies GDB of | |
12866 | events. This allows the user to get control and place | |
12867 | breakpoints in initializer routines for dynamically loaded | |
12868 | objects (among other things). */ | |
12869 | bs->stop = stop_on_solib_events; | |
12870 | bs->print = stop_on_solib_events; | |
12871 | } | |
12872 | else | |
12873 | bs->stop = 0; | |
06edf0c0 PA |
12874 | } |
12875 | ||
12876 | static enum print_stop_action | |
12877 | internal_bkpt_print_it (bpstat bs) | |
12878 | { | |
06edf0c0 | 12879 | struct breakpoint *b; |
06edf0c0 | 12880 | |
06edf0c0 PA |
12881 | b = bs->breakpoint_at; |
12882 | ||
06edf0c0 PA |
12883 | switch (b->type) |
12884 | { | |
348d480f PA |
12885 | case bp_shlib_event: |
12886 | /* Did we stop because the user set the stop_on_solib_events | |
12887 | variable? (If so, we report this as a generic, "Stopped due | |
12888 | to shlib event" message.) */ | |
edcc5120 | 12889 | print_solib_event (0); |
348d480f PA |
12890 | break; |
12891 | ||
12892 | case bp_thread_event: | |
12893 | /* Not sure how we will get here. | |
12894 | GDB should not stop for these breakpoints. */ | |
12895 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12896 | break; |
12897 | ||
12898 | case bp_overlay_event: | |
12899 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12900 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12901 | break; |
12902 | ||
12903 | case bp_longjmp_master: | |
12904 | /* These should never be enabled. */ | |
12905 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12906 | break; |
12907 | ||
12908 | case bp_std_terminate_master: | |
12909 | /* These should never be enabled. */ | |
12910 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12911 | "gdb should not stop!\n")); | |
348d480f PA |
12912 | break; |
12913 | ||
12914 | case bp_exception_master: | |
12915 | /* These should never be enabled. */ | |
12916 | printf_filtered (_("Exception Master Breakpoint: " | |
12917 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12918 | break; |
12919 | } | |
12920 | ||
001c8c33 | 12921 | return PRINT_NOTHING; |
06edf0c0 PA |
12922 | } |
12923 | ||
12924 | static void | |
12925 | internal_bkpt_print_mention (struct breakpoint *b) | |
12926 | { | |
12927 | /* Nothing to mention. These breakpoints are internal. */ | |
12928 | } | |
12929 | ||
06edf0c0 PA |
12930 | /* Virtual table for momentary breakpoints */ |
12931 | ||
12932 | static void | |
12933 | momentary_bkpt_re_set (struct breakpoint *b) | |
12934 | { | |
12935 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12936 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12937 | Otherwise these should have been blown away via the cleanup chain |
12938 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12939 | } | |
12940 | ||
12941 | static void | |
12942 | momentary_bkpt_check_status (bpstat bs) | |
12943 | { | |
12944 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12945 | } | |
12946 | ||
12947 | static enum print_stop_action | |
12948 | momentary_bkpt_print_it (bpstat bs) | |
12949 | { | |
001c8c33 | 12950 | return PRINT_UNKNOWN; |
348d480f PA |
12951 | } |
12952 | ||
06edf0c0 PA |
12953 | static void |
12954 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12955 | { |
06edf0c0 | 12956 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12957 | } |
12958 | ||
e2e4d78b JK |
12959 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12960 | ||
12961 | It gets cleared already on the removal of the first one of such placed | |
12962 | breakpoints. This is OK as they get all removed altogether. */ | |
12963 | ||
c1fc2657 | 12964 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12965 | { |
c1fc2657 | 12966 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12967 | |
c1fc2657 | 12968 | if (tp != NULL) |
e2e4d78b | 12969 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12970 | } |
12971 | ||
55aa24fb SDJ |
12972 | /* Specific methods for probe breakpoints. */ |
12973 | ||
12974 | static int | |
12975 | bkpt_probe_insert_location (struct bp_location *bl) | |
12976 | { | |
12977 | int v = bkpt_insert_location (bl); | |
12978 | ||
12979 | if (v == 0) | |
12980 | { | |
12981 | /* The insertion was successful, now let's set the probe's semaphore | |
12982 | if needed. */ | |
0ea5cda8 SDJ |
12983 | if (bl->probe.probe->pops->set_semaphore != NULL) |
12984 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, | |
12985 | bl->probe.objfile, | |
12986 | bl->gdbarch); | |
55aa24fb SDJ |
12987 | } |
12988 | ||
12989 | return v; | |
12990 | } | |
12991 | ||
12992 | static int | |
73971819 PA |
12993 | bkpt_probe_remove_location (struct bp_location *bl, |
12994 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12995 | { |
12996 | /* Let's clear the semaphore before removing the location. */ | |
0ea5cda8 SDJ |
12997 | if (bl->probe.probe->pops->clear_semaphore != NULL) |
12998 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, | |
12999 | bl->probe.objfile, | |
13000 | bl->gdbarch); | |
55aa24fb | 13001 | |
73971819 | 13002 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
13003 | } |
13004 | ||
13005 | static void | |
f00aae0f | 13006 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13007 | struct linespec_result *canonical, |
f00aae0f | 13008 | enum bptype type_wanted) |
55aa24fb SDJ |
13009 | { |
13010 | struct linespec_sals lsal; | |
13011 | ||
c2f4122d | 13012 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
13013 | lsal.canonical |
13014 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13015 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
13016 | } |
13017 | ||
6c5b2ebe | 13018 | static std::vector<symtab_and_line> |
f00aae0f KS |
13019 | bkpt_probe_decode_location (struct breakpoint *b, |
13020 | const struct event_location *location, | |
6c5b2ebe | 13021 | struct program_space *search_pspace) |
55aa24fb | 13022 | { |
6c5b2ebe PA |
13023 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
13024 | if (sals.empty ()) | |
55aa24fb | 13025 | error (_("probe not found")); |
6c5b2ebe | 13026 | return sals; |
55aa24fb SDJ |
13027 | } |
13028 | ||
348d480f | 13029 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13030 | |
348d480f PA |
13031 | static void |
13032 | tracepoint_re_set (struct breakpoint *b) | |
13033 | { | |
13034 | breakpoint_re_set_default (b); | |
13035 | } | |
876fa593 | 13036 | |
348d480f PA |
13037 | static int |
13038 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13039 | struct address_space *aspace, CORE_ADDR bp_addr, |
13040 | const struct target_waitstatus *ws) | |
348d480f PA |
13041 | { |
13042 | /* By definition, the inferior does not report stops at | |
13043 | tracepoints. */ | |
13044 | return 0; | |
74960c60 VP |
13045 | } |
13046 | ||
13047 | static void | |
348d480f PA |
13048 | tracepoint_print_one_detail (const struct breakpoint *self, |
13049 | struct ui_out *uiout) | |
74960c60 | 13050 | { |
d9b3f62e PA |
13051 | struct tracepoint *tp = (struct tracepoint *) self; |
13052 | if (tp->static_trace_marker_id) | |
348d480f PA |
13053 | { |
13054 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13055 | |
112e8700 SM |
13056 | uiout->text ("\tmarker id is "); |
13057 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 13058 | tp->static_trace_marker_id); |
112e8700 | 13059 | uiout->text ("\n"); |
348d480f | 13060 | } |
0d381245 VP |
13061 | } |
13062 | ||
a474d7c2 | 13063 | static void |
348d480f | 13064 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13065 | { |
112e8700 | 13066 | if (current_uiout->is_mi_like_p ()) |
348d480f | 13067 | return; |
cc59ec59 | 13068 | |
348d480f PA |
13069 | switch (b->type) |
13070 | { | |
13071 | case bp_tracepoint: | |
13072 | printf_filtered (_("Tracepoint")); | |
13073 | printf_filtered (_(" %d"), b->number); | |
13074 | break; | |
13075 | case bp_fast_tracepoint: | |
13076 | printf_filtered (_("Fast tracepoint")); | |
13077 | printf_filtered (_(" %d"), b->number); | |
13078 | break; | |
13079 | case bp_static_tracepoint: | |
13080 | printf_filtered (_("Static tracepoint")); | |
13081 | printf_filtered (_(" %d"), b->number); | |
13082 | break; | |
13083 | default: | |
13084 | internal_error (__FILE__, __LINE__, | |
13085 | _("unhandled tracepoint type %d"), (int) b->type); | |
13086 | } | |
13087 | ||
13088 | say_where (b); | |
a474d7c2 PA |
13089 | } |
13090 | ||
348d480f | 13091 | static void |
d9b3f62e | 13092 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13093 | { |
d9b3f62e PA |
13094 | struct tracepoint *tp = (struct tracepoint *) self; |
13095 | ||
13096 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13097 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 13098 | else if (self->type == bp_static_tracepoint) |
348d480f | 13099 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13100 | else if (self->type == bp_tracepoint) |
348d480f PA |
13101 | fprintf_unfiltered (fp, "trace"); |
13102 | else | |
13103 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13104 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13105 | |
f00aae0f | 13106 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 13107 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
13108 | print_recreate_thread (self, fp); |
13109 | ||
13110 | if (tp->pass_count) | |
13111 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13112 | } |
13113 | ||
983af33b | 13114 | static void |
f00aae0f KS |
13115 | tracepoint_create_sals_from_location (const struct event_location *location, |
13116 | struct linespec_result *canonical, | |
13117 | enum bptype type_wanted) | |
983af33b | 13118 | { |
f00aae0f | 13119 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13120 | } |
13121 | ||
13122 | static void | |
13123 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13124 | struct linespec_result *canonical, | |
e1e01040 PA |
13125 | gdb::unique_xmalloc_ptr<char> cond_string, |
13126 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13127 | enum bptype type_wanted, |
13128 | enum bpdisp disposition, | |
13129 | int thread, | |
13130 | int task, int ignore_count, | |
13131 | const struct breakpoint_ops *ops, | |
13132 | int from_tty, int enabled, | |
44f238bb | 13133 | int internal, unsigned flags) |
983af33b | 13134 | { |
023fa29b | 13135 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13136 | std::move (cond_string), |
13137 | std::move (extra_string), | |
e7e0cddf | 13138 | type_wanted, |
983af33b SDJ |
13139 | disposition, thread, task, |
13140 | ignore_count, ops, from_tty, | |
44f238bb | 13141 | enabled, internal, flags); |
983af33b SDJ |
13142 | } |
13143 | ||
6c5b2ebe | 13144 | static std::vector<symtab_and_line> |
f00aae0f KS |
13145 | tracepoint_decode_location (struct breakpoint *b, |
13146 | const struct event_location *location, | |
6c5b2ebe | 13147 | struct program_space *search_pspace) |
983af33b | 13148 | { |
6c5b2ebe | 13149 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13150 | } |
13151 | ||
2060206e | 13152 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13153 | |
55aa24fb SDJ |
13154 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13155 | static probe. */ | |
13156 | ||
13157 | static void | |
f00aae0f KS |
13158 | tracepoint_probe_create_sals_from_location |
13159 | (const struct event_location *location, | |
13160 | struct linespec_result *canonical, | |
13161 | enum bptype type_wanted) | |
55aa24fb SDJ |
13162 | { |
13163 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13164 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13165 | } |
13166 | ||
6c5b2ebe | 13167 | static std::vector<symtab_and_line> |
f00aae0f KS |
13168 | tracepoint_probe_decode_location (struct breakpoint *b, |
13169 | const struct event_location *location, | |
6c5b2ebe | 13170 | struct program_space *search_pspace) |
55aa24fb SDJ |
13171 | { |
13172 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13173 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13174 | } |
13175 | ||
13176 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13177 | ||
5c2b4418 HZ |
13178 | /* Dprintf breakpoint_ops methods. */ |
13179 | ||
13180 | static void | |
13181 | dprintf_re_set (struct breakpoint *b) | |
13182 | { | |
13183 | breakpoint_re_set_default (b); | |
13184 | ||
f00aae0f KS |
13185 | /* extra_string should never be non-NULL for dprintf. */ |
13186 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13187 | |
13188 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13189 | 2 - create a dprintf, which resolves fine. | |
13190 | 3 - disconnect from target 1 | |
13191 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13192 | ||
13193 | After steps #3/#4, you'll want the dprintf command list to | |
13194 | be updated, because target 1 and 2 may well return different | |
13195 | answers for target_can_run_breakpoint_commands(). | |
13196 | Given absence of finer grained resetting, we get to do | |
13197 | it all the time. */ | |
13198 | if (b->extra_string != NULL) | |
13199 | update_dprintf_command_list (b); | |
13200 | } | |
13201 | ||
2d9442cc HZ |
13202 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13203 | ||
13204 | static void | |
13205 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13206 | { | |
f00aae0f | 13207 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13208 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13209 | tp->extra_string); |
13210 | print_recreate_thread (tp, fp); | |
13211 | } | |
13212 | ||
9d6e6e84 HZ |
13213 | /* Implement the "after_condition_true" breakpoint_ops method for |
13214 | dprintf. | |
13215 | ||
13216 | dprintf's are implemented with regular commands in their command | |
13217 | list, but we run the commands here instead of before presenting the | |
13218 | stop to the user, as dprintf's don't actually cause a stop. This | |
13219 | also makes it so that the commands of multiple dprintfs at the same | |
13220 | address are all handled. */ | |
13221 | ||
13222 | static void | |
13223 | dprintf_after_condition_true (struct bpstats *bs) | |
13224 | { | |
04afa70c | 13225 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13226 | struct bpstats *tmp_bs_p = &tmp_bs; |
13227 | ||
13228 | /* dprintf's never cause a stop. This wasn't set in the | |
13229 | check_status hook instead because that would make the dprintf's | |
13230 | condition not be evaluated. */ | |
13231 | bs->stop = 0; | |
13232 | ||
13233 | /* Run the command list here. Take ownership of it instead of | |
13234 | copying. We never want these commands to run later in | |
13235 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13236 | be set at same address as this dprintf, or even if running the | |
13237 | commands here throws. */ | |
13238 | tmp_bs.commands = bs->commands; | |
13239 | bs->commands = NULL; | |
9d6e6e84 HZ |
13240 | |
13241 | bpstat_do_actions_1 (&tmp_bs_p); | |
13242 | ||
13243 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13244 | bpstat_do_actions_1 may return early without processing the whole | |
13245 | list. */ | |
9d6e6e84 HZ |
13246 | } |
13247 | ||
983af33b SDJ |
13248 | /* The breakpoint_ops structure to be used on static tracepoints with |
13249 | markers (`-m'). */ | |
13250 | ||
13251 | static void | |
f00aae0f | 13252 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 13253 | struct linespec_result *canonical, |
f00aae0f | 13254 | enum bptype type_wanted) |
983af33b SDJ |
13255 | { |
13256 | struct linespec_sals lsal; | |
f00aae0f | 13257 | const char *arg_start, *arg; |
983af33b | 13258 | |
f00aae0f KS |
13259 | arg = arg_start = get_linespec_location (location); |
13260 | lsal.sals = decode_static_tracepoint_spec (&arg); | |
983af33b | 13261 | |
f2fc3015 TT |
13262 | std::string str (arg_start, arg - arg_start); |
13263 | const char *ptr = str.c_str (); | |
13264 | canonical->location = new_linespec_location (&ptr); | |
983af33b | 13265 | |
8e9e35b1 TT |
13266 | lsal.canonical |
13267 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13268 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13269 | } |
13270 | ||
13271 | static void | |
13272 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13273 | struct linespec_result *canonical, | |
e1e01040 PA |
13274 | gdb::unique_xmalloc_ptr<char> cond_string, |
13275 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13276 | enum bptype type_wanted, |
13277 | enum bpdisp disposition, | |
13278 | int thread, | |
13279 | int task, int ignore_count, | |
13280 | const struct breakpoint_ops *ops, | |
13281 | int from_tty, int enabled, | |
44f238bb | 13282 | int internal, unsigned flags) |
983af33b | 13283 | { |
6c5b2ebe | 13284 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13285 | |
13286 | /* If the user is creating a static tracepoint by marker id | |
13287 | (strace -m MARKER_ID), then store the sals index, so that | |
13288 | breakpoint_re_set can try to match up which of the newly | |
13289 | found markers corresponds to this one, and, don't try to | |
13290 | expand multiple locations for each sal, given than SALS | |
13291 | already should contain all sals for MARKER_ID. */ | |
13292 | ||
6c5b2ebe | 13293 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13294 | { |
6c5b2ebe PA |
13295 | event_location_up location |
13296 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13297 | |
b270e6f9 | 13298 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13299 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13300 | std::move (location), NULL, |
e1e01040 PA |
13301 | std::move (cond_string), |
13302 | std::move (extra_string), | |
e7e0cddf | 13303 | type_wanted, disposition, |
983af33b | 13304 | thread, task, ignore_count, ops, |
44f238bb | 13305 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13306 | canonical->special_display); |
13307 | /* Given that its possible to have multiple markers with | |
13308 | the same string id, if the user is creating a static | |
13309 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13310 | store the sals index, so that breakpoint_re_set can | |
13311 | try to match up which of the newly found markers | |
13312 | corresponds to this one */ | |
13313 | tp->static_trace_marker_id_idx = i; | |
13314 | ||
b270e6f9 | 13315 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13316 | } |
13317 | } | |
13318 | ||
6c5b2ebe | 13319 | static std::vector<symtab_and_line> |
f00aae0f KS |
13320 | strace_marker_decode_location (struct breakpoint *b, |
13321 | const struct event_location *location, | |
6c5b2ebe | 13322 | struct program_space *search_pspace) |
983af33b SDJ |
13323 | { |
13324 | struct tracepoint *tp = (struct tracepoint *) b; | |
f00aae0f | 13325 | const char *s = get_linespec_location (location); |
983af33b | 13326 | |
6c5b2ebe PA |
13327 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13328 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13329 | { |
6c5b2ebe PA |
13330 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13331 | sals.resize (1); | |
13332 | return sals; | |
983af33b SDJ |
13333 | } |
13334 | else | |
13335 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13336 | } | |
13337 | ||
13338 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13339 | ||
13340 | static int | |
13341 | strace_marker_p (struct breakpoint *b) | |
13342 | { | |
13343 | return b->ops == &strace_marker_breakpoint_ops; | |
13344 | } | |
13345 | ||
53a5351d | 13346 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13347 | structures. */ |
c906108c SS |
13348 | |
13349 | void | |
fba45db2 | 13350 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13351 | { |
52f0bd74 | 13352 | struct breakpoint *b; |
c906108c | 13353 | |
8a3fe4f8 | 13354 | gdb_assert (bpt != NULL); |
c906108c | 13355 | |
4a64f543 MS |
13356 | /* Has this bp already been deleted? This can happen because |
13357 | multiple lists can hold pointers to bp's. bpstat lists are | |
13358 | especial culprits. | |
13359 | ||
13360 | One example of this happening is a watchpoint's scope bp. When | |
13361 | the scope bp triggers, we notice that the watchpoint is out of | |
13362 | scope, and delete it. We also delete its scope bp. But the | |
13363 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13364 | That bpstat is then checked for auto-deleting bp's, which are | |
13365 | deleted. | |
13366 | ||
13367 | A real solution to this problem might involve reference counts in | |
13368 | bp's, and/or giving them pointers back to their referencing | |
13369 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13370 | storage when no more references were extent. A cheaper bandaid | |
13371 | was chosen. */ | |
c906108c SS |
13372 | if (bpt->type == bp_none) |
13373 | return; | |
13374 | ||
4a64f543 MS |
13375 | /* At least avoid this stale reference until the reference counting |
13376 | of breakpoints gets resolved. */ | |
d0fb5eae | 13377 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13378 | { |
d0fb5eae | 13379 | struct breakpoint *related; |
3a5c3e22 | 13380 | struct watchpoint *w; |
d0fb5eae JK |
13381 | |
13382 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13383 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13384 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13385 | w = (struct watchpoint *) bpt; |
13386 | else | |
13387 | w = NULL; | |
13388 | if (w != NULL) | |
13389 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13390 | |
13391 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13392 | for (related = bpt; related->related_breakpoint != bpt; | |
13393 | related = related->related_breakpoint); | |
13394 | related->related_breakpoint = bpt->related_breakpoint; | |
13395 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13396 | } |
13397 | ||
a9634178 TJB |
13398 | /* watch_command_1 creates a watchpoint but only sets its number if |
13399 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13400 | a problem in that process, we'll be asked to delete the half-created | |
13401 | watchpoint. In that case, don't announce the deletion. */ | |
13402 | if (bpt->number) | |
13403 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13404 | |
c906108c SS |
13405 | if (breakpoint_chain == bpt) |
13406 | breakpoint_chain = bpt->next; | |
13407 | ||
c906108c SS |
13408 | ALL_BREAKPOINTS (b) |
13409 | if (b->next == bpt) | |
c5aa993b JM |
13410 | { |
13411 | b->next = bpt->next; | |
13412 | break; | |
13413 | } | |
c906108c | 13414 | |
f431efe5 PA |
13415 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13416 | been freed. */ | |
13417 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13418 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13419 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13420 | commands are associated with the bpstat; if we remove it here, | |
13421 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13422 | event-top.c won't do anything, and temporary breakpoints with | |
13423 | commands won't work. */ | |
13424 | ||
13425 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13426 | ||
4a64f543 MS |
13427 | /* Now that breakpoint is removed from breakpoint list, update the |
13428 | global location list. This will remove locations that used to | |
13429 | belong to this breakpoint. Do this before freeing the breakpoint | |
13430 | itself, since remove_breakpoint looks at location's owner. It | |
13431 | might be better design to have location completely | |
13432 | self-contained, but it's not the case now. */ | |
44702360 | 13433 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13434 | |
4a64f543 MS |
13435 | /* On the chance that someone will soon try again to delete this |
13436 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13437 | bpt->type = bp_none; |
4d01a485 | 13438 | delete bpt; |
c906108c SS |
13439 | } |
13440 | ||
4d6140d9 AC |
13441 | static void |
13442 | do_delete_breakpoint_cleanup (void *b) | |
13443 | { | |
9a3c8263 | 13444 | delete_breakpoint ((struct breakpoint *) b); |
4d6140d9 AC |
13445 | } |
13446 | ||
13447 | struct cleanup * | |
13448 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13449 | { | |
13450 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13451 | } | |
13452 | ||
51be5b68 PA |
13453 | /* Iterator function to call a user-provided callback function once |
13454 | for each of B and its related breakpoints. */ | |
13455 | ||
13456 | static void | |
13457 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13458 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13459 | { |
13460 | struct breakpoint *related; | |
13461 | ||
13462 | related = b; | |
13463 | do | |
13464 | { | |
13465 | struct breakpoint *next; | |
13466 | ||
13467 | /* FUNCTION may delete RELATED. */ | |
13468 | next = related->related_breakpoint; | |
13469 | ||
13470 | if (next == related) | |
13471 | { | |
13472 | /* RELATED is the last ring entry. */ | |
48649e1b | 13473 | function (related); |
51be5b68 PA |
13474 | |
13475 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13476 | B. There's nothing left to do anyway, so just break | |
13477 | out. */ | |
13478 | break; | |
13479 | } | |
13480 | else | |
48649e1b | 13481 | function (related); |
51be5b68 PA |
13482 | |
13483 | related = next; | |
13484 | } | |
13485 | while (related != b); | |
13486 | } | |
95a42b64 | 13487 | |
4495129a | 13488 | static void |
fba45db2 | 13489 | delete_command (char *arg, int from_tty) |
c906108c | 13490 | { |
35df4500 | 13491 | struct breakpoint *b, *b_tmp; |
c906108c | 13492 | |
ea9365bb TT |
13493 | dont_repeat (); |
13494 | ||
c906108c SS |
13495 | if (arg == 0) |
13496 | { | |
13497 | int breaks_to_delete = 0; | |
13498 | ||
46c6471b PA |
13499 | /* Delete all breakpoints if no argument. Do not delete |
13500 | internal breakpoints, these have to be deleted with an | |
13501 | explicit breakpoint number argument. */ | |
c5aa993b | 13502 | ALL_BREAKPOINTS (b) |
46c6471b | 13503 | if (user_breakpoint_p (b)) |
973d738b DJ |
13504 | { |
13505 | breaks_to_delete = 1; | |
13506 | break; | |
13507 | } | |
c906108c SS |
13508 | |
13509 | /* Ask user only if there are some breakpoints to delete. */ | |
13510 | if (!from_tty | |
e2e0b3e5 | 13511 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13512 | { |
35df4500 | 13513 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13514 | if (user_breakpoint_p (b)) |
c5aa993b | 13515 | delete_breakpoint (b); |
c906108c SS |
13516 | } |
13517 | } | |
13518 | else | |
48649e1b TT |
13519 | map_breakpoint_numbers |
13520 | (arg, [&] (breakpoint *b) | |
13521 | { | |
13522 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
13523 | }); | |
c906108c SS |
13524 | } |
13525 | ||
c2f4122d PA |
13526 | /* Return true if all locations of B bound to PSPACE are pending. If |
13527 | PSPACE is NULL, all locations of all program spaces are | |
13528 | considered. */ | |
13529 | ||
0d381245 | 13530 | static int |
c2f4122d | 13531 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13532 | { |
c2f4122d PA |
13533 | struct bp_location *loc; |
13534 | ||
13535 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13536 | if ((pspace == NULL | |
13537 | || loc->pspace == pspace) | |
13538 | && !loc->shlib_disabled | |
8645ff69 | 13539 | && !loc->pspace->executing_startup) |
0d381245 VP |
13540 | return 0; |
13541 | return 1; | |
fe3f5fa8 VP |
13542 | } |
13543 | ||
776592bf DE |
13544 | /* Subroutine of update_breakpoint_locations to simplify it. |
13545 | Return non-zero if multiple fns in list LOC have the same name. | |
13546 | Null names are ignored. */ | |
13547 | ||
13548 | static int | |
13549 | ambiguous_names_p (struct bp_location *loc) | |
13550 | { | |
13551 | struct bp_location *l; | |
13552 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13553 | (int (*) (const void *, |
13554 | const void *)) streq, | |
776592bf DE |
13555 | NULL, xcalloc, xfree); |
13556 | ||
13557 | for (l = loc; l != NULL; l = l->next) | |
13558 | { | |
13559 | const char **slot; | |
13560 | const char *name = l->function_name; | |
13561 | ||
13562 | /* Allow for some names to be NULL, ignore them. */ | |
13563 | if (name == NULL) | |
13564 | continue; | |
13565 | ||
13566 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13567 | INSERT); | |
4a64f543 MS |
13568 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13569 | returns NULL. */ | |
776592bf DE |
13570 | if (*slot != NULL) |
13571 | { | |
13572 | htab_delete (htab); | |
13573 | return 1; | |
13574 | } | |
13575 | *slot = name; | |
13576 | } | |
13577 | ||
13578 | htab_delete (htab); | |
13579 | return 0; | |
13580 | } | |
13581 | ||
0fb4aa4b PA |
13582 | /* When symbols change, it probably means the sources changed as well, |
13583 | and it might mean the static tracepoint markers are no longer at | |
13584 | the same address or line numbers they used to be at last we | |
13585 | checked. Losing your static tracepoints whenever you rebuild is | |
13586 | undesirable. This function tries to resync/rematch gdb static | |
13587 | tracepoints with the markers on the target, for static tracepoints | |
13588 | that have not been set by marker id. Static tracepoint that have | |
13589 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13590 | The heuristic is: | |
13591 | ||
13592 | 1) For a tracepoint set at a specific address, look for a marker at | |
13593 | the old PC. If one is found there, assume to be the same marker. | |
13594 | If the name / string id of the marker found is different from the | |
13595 | previous known name, assume that means the user renamed the marker | |
13596 | in the sources, and output a warning. | |
13597 | ||
13598 | 2) For a tracepoint set at a given line number, look for a marker | |
13599 | at the new address of the old line number. If one is found there, | |
13600 | assume to be the same marker. If the name / string id of the | |
13601 | marker found is different from the previous known name, assume that | |
13602 | means the user renamed the marker in the sources, and output a | |
13603 | warning. | |
13604 | ||
13605 | 3) If a marker is no longer found at the same address or line, it | |
13606 | may mean the marker no longer exists. But it may also just mean | |
13607 | the code changed a bit. Maybe the user added a few lines of code | |
13608 | that made the marker move up or down (in line number terms). Ask | |
13609 | the target for info about the marker with the string id as we knew | |
13610 | it. If found, update line number and address in the matching | |
13611 | static tracepoint. This will get confused if there's more than one | |
13612 | marker with the same ID (possible in UST, although unadvised | |
13613 | precisely because it confuses tools). */ | |
13614 | ||
13615 | static struct symtab_and_line | |
13616 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13617 | { | |
d9b3f62e | 13618 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13619 | struct static_tracepoint_marker marker; |
13620 | CORE_ADDR pc; | |
0fb4aa4b PA |
13621 | |
13622 | pc = sal.pc; | |
13623 | if (sal.line) | |
13624 | find_line_pc (sal.symtab, sal.line, &pc); | |
13625 | ||
13626 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13627 | { | |
d9b3f62e | 13628 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13629 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13630 | b->number, | |
d9b3f62e | 13631 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13632 | |
d9b3f62e PA |
13633 | xfree (tp->static_trace_marker_id); |
13634 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13635 | release_static_tracepoint_marker (&marker); |
13636 | ||
13637 | return sal; | |
13638 | } | |
13639 | ||
13640 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13641 | by string ID. */ | |
13642 | if (!sal.explicit_pc | |
13643 | && sal.line != 0 | |
13644 | && sal.symtab != NULL | |
d9b3f62e | 13645 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13646 | { |
13647 | VEC(static_tracepoint_marker_p) *markers; | |
13648 | ||
13649 | markers | |
d9b3f62e | 13650 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13651 | |
13652 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13653 | { | |
0fb4aa4b | 13654 | struct symbol *sym; |
80e1d417 | 13655 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13656 | struct ui_out *uiout = current_uiout; |
67994074 | 13657 | struct explicit_location explicit_loc; |
0fb4aa4b | 13658 | |
80e1d417 | 13659 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13660 | |
d9b3f62e | 13661 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13662 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13663 | |
13664 | warning (_("marker for static tracepoint %d (%s) not " | |
13665 | "found at previous line number"), | |
d9b3f62e | 13666 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13667 | |
51abb421 | 13668 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13669 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13670 | uiout->text ("Now in "); |
0fb4aa4b PA |
13671 | if (sym) |
13672 | { | |
112e8700 SM |
13673 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym)); |
13674 | uiout->text (" at "); | |
0fb4aa4b | 13675 | } |
112e8700 | 13676 | uiout->field_string ("file", |
05cba821 | 13677 | symtab_to_filename_for_display (sal2.symtab)); |
112e8700 | 13678 | uiout->text (":"); |
0fb4aa4b | 13679 | |
112e8700 | 13680 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13681 | { |
0b0865da | 13682 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13683 | |
112e8700 | 13684 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13685 | } |
13686 | ||
112e8700 SM |
13687 | uiout->field_int ("line", sal2.line); |
13688 | uiout->text ("\n"); | |
0fb4aa4b | 13689 | |
80e1d417 | 13690 | b->loc->line_number = sal2.line; |
2f202fde | 13691 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13692 | |
d28cd78a | 13693 | b->location.reset (NULL); |
67994074 KS |
13694 | initialize_explicit_location (&explicit_loc); |
13695 | explicit_loc.source_filename | |
00e52e53 | 13696 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13697 | explicit_loc.line_offset.offset = b->loc->line_number; |
13698 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13699 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13700 | |
13701 | /* Might be nice to check if function changed, and warn if | |
13702 | so. */ | |
13703 | ||
80e1d417 | 13704 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13705 | } |
13706 | } | |
13707 | return sal; | |
13708 | } | |
13709 | ||
8d3788bd VP |
13710 | /* Returns 1 iff locations A and B are sufficiently same that |
13711 | we don't need to report breakpoint as changed. */ | |
13712 | ||
13713 | static int | |
13714 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13715 | { | |
13716 | while (a && b) | |
13717 | { | |
13718 | if (a->address != b->address) | |
13719 | return 0; | |
13720 | ||
13721 | if (a->shlib_disabled != b->shlib_disabled) | |
13722 | return 0; | |
13723 | ||
13724 | if (a->enabled != b->enabled) | |
13725 | return 0; | |
13726 | ||
13727 | a = a->next; | |
13728 | b = b->next; | |
13729 | } | |
13730 | ||
13731 | if ((a == NULL) != (b == NULL)) | |
13732 | return 0; | |
13733 | ||
13734 | return 1; | |
13735 | } | |
13736 | ||
c2f4122d PA |
13737 | /* Split all locations of B that are bound to PSPACE out of B's |
13738 | location list to a separate list and return that list's head. If | |
13739 | PSPACE is NULL, hoist out all locations of B. */ | |
13740 | ||
13741 | static struct bp_location * | |
13742 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13743 | { | |
13744 | struct bp_location head; | |
13745 | struct bp_location *i = b->loc; | |
13746 | struct bp_location **i_link = &b->loc; | |
13747 | struct bp_location *hoisted = &head; | |
13748 | ||
13749 | if (pspace == NULL) | |
13750 | { | |
13751 | i = b->loc; | |
13752 | b->loc = NULL; | |
13753 | return i; | |
13754 | } | |
13755 | ||
13756 | head.next = NULL; | |
13757 | ||
13758 | while (i != NULL) | |
13759 | { | |
13760 | if (i->pspace == pspace) | |
13761 | { | |
13762 | *i_link = i->next; | |
13763 | i->next = NULL; | |
13764 | hoisted->next = i; | |
13765 | hoisted = i; | |
13766 | } | |
13767 | else | |
13768 | i_link = &i->next; | |
13769 | i = *i_link; | |
13770 | } | |
13771 | ||
13772 | return head.next; | |
13773 | } | |
13774 | ||
13775 | /* Create new breakpoint locations for B (a hardware or software | |
13776 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13777 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13778 | FILTER_PSPACE. Locations of other program spaces are left | |
13779 | untouched. */ | |
f1310107 | 13780 | |
0e30163f | 13781 | void |
0d381245 | 13782 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13783 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13784 | gdb::array_view<const symtab_and_line> sals, |
13785 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 VP |
13786 | { |
13787 | int i; | |
c2f4122d | 13788 | struct bp_location *existing_locations; |
0d381245 | 13789 | |
6c5b2ebe | 13790 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13791 | { |
13792 | /* Ranged breakpoints have only one start location and one end | |
13793 | location. */ | |
13794 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13795 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13796 | "multiple locations found\n"), | |
13797 | b->number); | |
13798 | return; | |
13799 | } | |
f1310107 | 13800 | |
4a64f543 MS |
13801 | /* If there's no new locations, and all existing locations are |
13802 | pending, don't do anything. This optimizes the common case where | |
13803 | all locations are in the same shared library, that was unloaded. | |
13804 | We'd like to retain the location, so that when the library is | |
13805 | loaded again, we don't loose the enabled/disabled status of the | |
13806 | individual locations. */ | |
6c5b2ebe | 13807 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13808 | return; |
13809 | ||
c2f4122d | 13810 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13811 | |
6c5b2ebe | 13812 | for (const auto &sal : sals) |
fe3f5fa8 | 13813 | { |
f8eba3c6 TT |
13814 | struct bp_location *new_loc; |
13815 | ||
6c5b2ebe | 13816 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13817 | |
6c5b2ebe | 13818 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13819 | |
0d381245 VP |
13820 | /* Reparse conditions, they might contain references to the |
13821 | old symtab. */ | |
13822 | if (b->cond_string != NULL) | |
13823 | { | |
bbc13ae3 | 13824 | const char *s; |
fe3f5fa8 | 13825 | |
0d381245 | 13826 | s = b->cond_string; |
492d29ea | 13827 | TRY |
0d381245 | 13828 | { |
6c5b2ebe PA |
13829 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13830 | block_for_pc (sal.pc), | |
0d381245 VP |
13831 | 0); |
13832 | } | |
492d29ea | 13833 | CATCH (e, RETURN_MASK_ERROR) |
0d381245 | 13834 | { |
3e43a32a MS |
13835 | warning (_("failed to reevaluate condition " |
13836 | "for breakpoint %d: %s"), | |
0d381245 VP |
13837 | b->number, e.message); |
13838 | new_loc->enabled = 0; | |
13839 | } | |
492d29ea | 13840 | END_CATCH |
0d381245 | 13841 | } |
fe3f5fa8 | 13842 | |
6c5b2ebe | 13843 | if (!sals_end.empty ()) |
f1310107 | 13844 | { |
6c5b2ebe | 13845 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13846 | |
6c5b2ebe | 13847 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13848 | } |
0d381245 | 13849 | } |
fe3f5fa8 | 13850 | |
4a64f543 MS |
13851 | /* If possible, carry over 'disable' status from existing |
13852 | breakpoints. */ | |
0d381245 VP |
13853 | { |
13854 | struct bp_location *e = existing_locations; | |
776592bf DE |
13855 | /* If there are multiple breakpoints with the same function name, |
13856 | e.g. for inline functions, comparing function names won't work. | |
13857 | Instead compare pc addresses; this is just a heuristic as things | |
13858 | may have moved, but in practice it gives the correct answer | |
13859 | often enough until a better solution is found. */ | |
13860 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13861 | ||
0d381245 VP |
13862 | for (; e; e = e->next) |
13863 | { | |
13864 | if (!e->enabled && e->function_name) | |
13865 | { | |
13866 | struct bp_location *l = b->loc; | |
776592bf DE |
13867 | if (have_ambiguous_names) |
13868 | { | |
13869 | for (; l; l = l->next) | |
f1310107 | 13870 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13871 | { |
13872 | l->enabled = 0; | |
13873 | break; | |
13874 | } | |
13875 | } | |
13876 | else | |
13877 | { | |
13878 | for (; l; l = l->next) | |
13879 | if (l->function_name | |
13880 | && strcmp (e->function_name, l->function_name) == 0) | |
13881 | { | |
13882 | l->enabled = 0; | |
13883 | break; | |
13884 | } | |
13885 | } | |
0d381245 VP |
13886 | } |
13887 | } | |
13888 | } | |
fe3f5fa8 | 13889 | |
8d3788bd VP |
13890 | if (!locations_are_equal (existing_locations, b->loc)) |
13891 | observer_notify_breakpoint_modified (b); | |
fe3f5fa8 VP |
13892 | } |
13893 | ||
f00aae0f | 13894 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13895 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13896 | ||
6c5b2ebe | 13897 | static std::vector<symtab_and_line> |
f00aae0f | 13898 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13899 | struct program_space *search_pspace, int *found) |
ef23e705 | 13900 | { |
492d29ea | 13901 | struct gdb_exception exception = exception_none; |
ef23e705 | 13902 | |
983af33b | 13903 | gdb_assert (b->ops != NULL); |
ef23e705 | 13904 | |
6c5b2ebe PA |
13905 | std::vector<symtab_and_line> sals; |
13906 | ||
492d29ea | 13907 | TRY |
ef23e705 | 13908 | { |
6c5b2ebe | 13909 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13910 | } |
492d29ea | 13911 | CATCH (e, RETURN_MASK_ERROR) |
ef23e705 TJB |
13912 | { |
13913 | int not_found_and_ok = 0; | |
492d29ea PA |
13914 | |
13915 | exception = e; | |
13916 | ||
ef23e705 TJB |
13917 | /* For pending breakpoints, it's expected that parsing will |
13918 | fail until the right shared library is loaded. User has | |
13919 | already told to create pending breakpoints and don't need | |
13920 | extra messages. If breakpoint is in bp_shlib_disabled | |
13921 | state, then user already saw the message about that | |
13922 | breakpoint being disabled, and don't want to see more | |
13923 | errors. */ | |
58438ac1 | 13924 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13925 | && (b->condition_not_parsed |
13926 | || (b->loc != NULL | |
13927 | && search_pspace != NULL | |
13928 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13929 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13930 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13931 | || b->enable_state == bp_disabled)) |
13932 | not_found_and_ok = 1; | |
13933 | ||
13934 | if (!not_found_and_ok) | |
13935 | { | |
13936 | /* We surely don't want to warn about the same breakpoint | |
13937 | 10 times. One solution, implemented here, is disable | |
13938 | the breakpoint on error. Another solution would be to | |
13939 | have separate 'warning emitted' flag. Since this | |
13940 | happens only when a binary has changed, I don't know | |
13941 | which approach is better. */ | |
13942 | b->enable_state = bp_disabled; | |
13943 | throw_exception (e); | |
13944 | } | |
13945 | } | |
492d29ea | 13946 | END_CATCH |
ef23e705 | 13947 | |
492d29ea | 13948 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13949 | { |
6c5b2ebe PA |
13950 | for (auto &sal : sals) |
13951 | resolve_sal_pc (&sal); | |
f00aae0f | 13952 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13953 | { |
ed1d1739 KS |
13954 | char *cond_string, *extra_string; |
13955 | int thread, task; | |
ef23e705 | 13956 | |
6c5b2ebe | 13957 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13958 | &cond_string, &thread, &task, |
13959 | &extra_string); | |
f00aae0f | 13960 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13961 | if (cond_string) |
13962 | b->cond_string = cond_string; | |
13963 | b->thread = thread; | |
13964 | b->task = task; | |
e7e0cddf | 13965 | if (extra_string) |
f00aae0f KS |
13966 | { |
13967 | xfree (b->extra_string); | |
13968 | b->extra_string = extra_string; | |
13969 | } | |
ef23e705 TJB |
13970 | b->condition_not_parsed = 0; |
13971 | } | |
13972 | ||
983af33b | 13973 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13974 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13975 | |
58438ac1 TT |
13976 | *found = 1; |
13977 | } | |
13978 | else | |
13979 | *found = 0; | |
ef23e705 TJB |
13980 | |
13981 | return sals; | |
13982 | } | |
13983 | ||
348d480f PA |
13984 | /* The default re_set method, for typical hardware or software |
13985 | breakpoints. Reevaluate the breakpoint and recreate its | |
13986 | locations. */ | |
13987 | ||
13988 | static void | |
28010a5d | 13989 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13990 | { |
c2f4122d | 13991 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13992 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13993 | |
6c5b2ebe PA |
13994 | int found; |
13995 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13996 | filter_pspace, &found); | |
ef23e705 | 13997 | if (found) |
6c5b2ebe | 13998 | expanded = std::move (sals); |
ef23e705 | 13999 | |
f00aae0f | 14000 | if (b->location_range_end != NULL) |
f1310107 | 14001 | { |
6c5b2ebe PA |
14002 | std::vector<symtab_and_line> sals_end |
14003 | = location_to_sals (b, b->location_range_end.get (), | |
14004 | filter_pspace, &found); | |
f1310107 | 14005 | if (found) |
6c5b2ebe | 14006 | expanded_end = std::move (sals_end); |
f1310107 TJB |
14007 | } |
14008 | ||
c2f4122d | 14009 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
14010 | } |
14011 | ||
983af33b SDJ |
14012 | /* Default method for creating SALs from an address string. It basically |
14013 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14014 | ||
14015 | static void | |
f00aae0f KS |
14016 | create_sals_from_location_default (const struct event_location *location, |
14017 | struct linespec_result *canonical, | |
14018 | enum bptype type_wanted) | |
983af33b | 14019 | { |
f00aae0f | 14020 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
14021 | } |
14022 | ||
14023 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14024 | function for the `create_breakpoints_sal' method of | |
14025 | breakpoint_ops. */ | |
14026 | ||
14027 | static void | |
14028 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14029 | struct linespec_result *canonical, | |
e1e01040 PA |
14030 | gdb::unique_xmalloc_ptr<char> cond_string, |
14031 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
14032 | enum bptype type_wanted, |
14033 | enum bpdisp disposition, | |
14034 | int thread, | |
14035 | int task, int ignore_count, | |
14036 | const struct breakpoint_ops *ops, | |
14037 | int from_tty, int enabled, | |
44f238bb | 14038 | int internal, unsigned flags) |
983af33b | 14039 | { |
e1e01040 PA |
14040 | create_breakpoints_sal (gdbarch, canonical, |
14041 | std::move (cond_string), | |
14042 | std::move (extra_string), | |
983af33b SDJ |
14043 | type_wanted, disposition, |
14044 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14045 | enabled, internal, flags); |
983af33b SDJ |
14046 | } |
14047 | ||
14048 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 14049 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 14050 | |
6c5b2ebe | 14051 | static std::vector<symtab_and_line> |
f00aae0f KS |
14052 | decode_location_default (struct breakpoint *b, |
14053 | const struct event_location *location, | |
6c5b2ebe | 14054 | struct program_space *search_pspace) |
983af33b SDJ |
14055 | { |
14056 | struct linespec_result canonical; | |
14057 | ||
c2f4122d | 14058 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
983af33b SDJ |
14059 | (struct symtab *) NULL, 0, |
14060 | &canonical, multiple_symbols_all, | |
14061 | b->filter); | |
14062 | ||
14063 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 14064 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 14065 | |
6c5b2ebe | 14066 | if (!canonical.lsals.empty ()) |
983af33b | 14067 | { |
6c5b2ebe PA |
14068 | const linespec_sals &lsal = canonical.lsals[0]; |
14069 | return std::move (lsal.sals); | |
983af33b | 14070 | } |
6c5b2ebe | 14071 | return {}; |
983af33b SDJ |
14072 | } |
14073 | ||
28010a5d PA |
14074 | /* Prepare the global context for a re-set of breakpoint B. */ |
14075 | ||
14076 | static struct cleanup * | |
14077 | prepare_re_set_context (struct breakpoint *b) | |
14078 | { | |
28010a5d | 14079 | input_radix = b->input_radix; |
28010a5d PA |
14080 | set_language (b->language); |
14081 | ||
c2f4122d | 14082 | return make_cleanup (null_cleanup, NULL); |
ef23e705 TJB |
14083 | } |
14084 | ||
bf469271 | 14085 | /* Reset a breakpoint. */ |
c906108c | 14086 | |
bf469271 PA |
14087 | static void |
14088 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 14089 | { |
348d480f | 14090 | struct cleanup *cleanups; |
c906108c | 14091 | |
348d480f PA |
14092 | cleanups = prepare_re_set_context (b); |
14093 | b->ops->re_set (b); | |
14094 | do_cleanups (cleanups); | |
c906108c SS |
14095 | } |
14096 | ||
c2f4122d PA |
14097 | /* Re-set breakpoint locations for the current program space. |
14098 | Locations bound to other program spaces are left untouched. */ | |
14099 | ||
c906108c | 14100 | void |
69de3c6a | 14101 | breakpoint_re_set (void) |
c906108c | 14102 | { |
35df4500 | 14103 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14104 | enum language save_language; |
14105 | int save_input_radix; | |
c5aa993b | 14106 | |
c906108c SS |
14107 | save_language = current_language->la_language; |
14108 | save_input_radix = input_radix; | |
2a7f3dff | 14109 | |
c5aa993b | 14110 | { |
5ed8105e | 14111 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 14112 | |
5ed8105e PA |
14113 | /* Note: we must not try to insert locations until after all |
14114 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
14115 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
14116 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 14117 | |
5ed8105e PA |
14118 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
14119 | { | |
bf469271 PA |
14120 | TRY |
14121 | { | |
14122 | breakpoint_re_set_one (b); | |
14123 | } | |
14124 | CATCH (ex, RETURN_MASK_ALL) | |
14125 | { | |
14126 | exception_fprintf (gdb_stderr, ex, | |
14127 | "Error in re-setting breakpoint %d: ", | |
14128 | b->number); | |
14129 | } | |
14130 | END_CATCH | |
5ed8105e PA |
14131 | } |
14132 | set_language (save_language); | |
14133 | input_radix = save_input_radix; | |
14134 | ||
14135 | jit_breakpoint_re_set (); | |
14136 | } | |
6c95b8df | 14137 | |
af02033e PP |
14138 | create_overlay_event_breakpoint (); |
14139 | create_longjmp_master_breakpoint (); | |
14140 | create_std_terminate_master_breakpoint (); | |
186c406b | 14141 | create_exception_master_breakpoint (); |
2a7f3dff PA |
14142 | |
14143 | /* Now we can insert. */ | |
14144 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
14145 | } |
14146 | \f | |
c906108c SS |
14147 | /* Reset the thread number of this breakpoint: |
14148 | ||
14149 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14150 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14151 | void |
fba45db2 | 14152 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14153 | { |
14154 | if (b->thread != -1) | |
14155 | { | |
39f77062 | 14156 | if (in_thread_list (inferior_ptid)) |
5d5658a1 | 14157 | b->thread = ptid_to_global_thread_id (inferior_ptid); |
6c95b8df PA |
14158 | |
14159 | /* We're being called after following a fork. The new fork is | |
14160 | selected as current, and unless this was a vfork will have a | |
14161 | different program space from the original thread. Reset that | |
14162 | as well. */ | |
14163 | b->loc->pspace = current_program_space; | |
c906108c SS |
14164 | } |
14165 | } | |
14166 | ||
03ac34d5 MS |
14167 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14168 | If from_tty is nonzero, it prints a message to that effect, | |
14169 | which ends with a period (no newline). */ | |
14170 | ||
c906108c | 14171 | void |
fba45db2 | 14172 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14173 | { |
52f0bd74 | 14174 | struct breakpoint *b; |
c906108c SS |
14175 | |
14176 | if (count < 0) | |
14177 | count = 0; | |
14178 | ||
14179 | ALL_BREAKPOINTS (b) | |
14180 | if (b->number == bptnum) | |
c5aa993b | 14181 | { |
d77f58be SS |
14182 | if (is_tracepoint (b)) |
14183 | { | |
14184 | if (from_tty && count != 0) | |
14185 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14186 | bptnum); | |
14187 | return; | |
14188 | } | |
14189 | ||
c5aa993b | 14190 | b->ignore_count = count; |
221ea385 KS |
14191 | if (from_tty) |
14192 | { | |
14193 | if (count == 0) | |
3e43a32a MS |
14194 | printf_filtered (_("Will stop next time " |
14195 | "breakpoint %d is reached."), | |
221ea385 KS |
14196 | bptnum); |
14197 | else if (count == 1) | |
a3f17187 | 14198 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14199 | bptnum); |
14200 | else | |
3e43a32a MS |
14201 | printf_filtered (_("Will ignore next %d " |
14202 | "crossings of breakpoint %d."), | |
221ea385 KS |
14203 | count, bptnum); |
14204 | } | |
8d3788bd | 14205 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14206 | return; |
14207 | } | |
c906108c | 14208 | |
8a3fe4f8 | 14209 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14210 | } |
14211 | ||
c906108c SS |
14212 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14213 | ||
14214 | static void | |
fba45db2 | 14215 | ignore_command (char *args, int from_tty) |
c906108c SS |
14216 | { |
14217 | char *p = args; | |
52f0bd74 | 14218 | int num; |
c906108c SS |
14219 | |
14220 | if (p == 0) | |
e2e0b3e5 | 14221 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14222 | |
c906108c | 14223 | num = get_number (&p); |
5c44784c | 14224 | if (num == 0) |
8a3fe4f8 | 14225 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14226 | if (*p == 0) |
8a3fe4f8 | 14227 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14228 | |
14229 | set_ignore_count (num, | |
14230 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14231 | from_tty); | |
221ea385 KS |
14232 | if (from_tty) |
14233 | printf_filtered ("\n"); | |
c906108c SS |
14234 | } |
14235 | \f | |
14236 | /* Call FUNCTION on each of the breakpoints | |
14237 | whose numbers are given in ARGS. */ | |
14238 | ||
14239 | static void | |
896b6bda | 14240 | map_breakpoint_numbers (const char *args, |
48649e1b | 14241 | gdb::function_view<void (breakpoint *)> function) |
c906108c | 14242 | { |
52f0bd74 AC |
14243 | int num; |
14244 | struct breakpoint *b, *tmp; | |
c906108c | 14245 | |
b9d61307 | 14246 | if (args == 0 || *args == '\0') |
e2e0b3e5 | 14247 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14248 | |
bfd28288 | 14249 | number_or_range_parser parser (args); |
197f0a60 | 14250 | |
bfd28288 | 14251 | while (!parser.finished ()) |
c906108c | 14252 | { |
bfd28288 PA |
14253 | const char *p = parser.cur_tok (); |
14254 | bool match = false; | |
197f0a60 | 14255 | |
bfd28288 | 14256 | num = parser.get_number (); |
5c44784c | 14257 | if (num == 0) |
c5aa993b | 14258 | { |
8a3fe4f8 | 14259 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14260 | } |
14261 | else | |
14262 | { | |
14263 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14264 | if (b->number == num) | |
14265 | { | |
bfd28288 | 14266 | match = true; |
48649e1b | 14267 | function (b); |
11cf8741 | 14268 | break; |
5c44784c | 14269 | } |
bfd28288 | 14270 | if (!match) |
a3f17187 | 14271 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14272 | } |
c906108c SS |
14273 | } |
14274 | } | |
14275 | ||
0d381245 | 14276 | static struct bp_location * |
cb791d59 | 14277 | find_location_by_number (const char *number) |
0d381245 | 14278 | { |
cb791d59 | 14279 | const char *p1; |
0d381245 VP |
14280 | int bp_num; |
14281 | int loc_num; | |
14282 | struct breakpoint *b; | |
14283 | struct bp_location *loc; | |
14284 | ||
0d381245 | 14285 | p1 = number; |
cb791d59 TT |
14286 | bp_num = get_number_trailer (&p1, '.'); |
14287 | if (bp_num == 0 || p1[0] != '.') | |
0d381245 VP |
14288 | error (_("Bad breakpoint number '%s'"), number); |
14289 | ||
14290 | ALL_BREAKPOINTS (b) | |
14291 | if (b->number == bp_num) | |
14292 | { | |
14293 | break; | |
14294 | } | |
14295 | ||
14296 | if (!b || b->number != bp_num) | |
14297 | error (_("Bad breakpoint number '%s'"), number); | |
14298 | ||
cb791d59 TT |
14299 | /* Skip the dot. */ |
14300 | ++p1; | |
14301 | const char *save = p1; | |
197f0a60 | 14302 | loc_num = get_number (&p1); |
0d381245 VP |
14303 | if (loc_num == 0) |
14304 | error (_("Bad breakpoint location number '%s'"), number); | |
14305 | ||
14306 | --loc_num; | |
14307 | loc = b->loc; | |
14308 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14309 | ; | |
14310 | if (!loc) | |
cb791d59 | 14311 | error (_("Bad breakpoint location number '%s'"), save); |
0d381245 VP |
14312 | |
14313 | return loc; | |
14314 | } | |
14315 | ||
14316 | ||
1900040c MS |
14317 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14318 | If from_tty is nonzero, it prints a message to that effect, | |
14319 | which ends with a period (no newline). */ | |
14320 | ||
c906108c | 14321 | void |
fba45db2 | 14322 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14323 | { |
14324 | /* Never disable a watchpoint scope breakpoint; we want to | |
14325 | hit them when we leave scope so we can delete both the | |
14326 | watchpoint and its scope breakpoint at that time. */ | |
14327 | if (bpt->type == bp_watchpoint_scope) | |
14328 | return; | |
14329 | ||
b5de0fa7 | 14330 | bpt->enable_state = bp_disabled; |
c906108c | 14331 | |
b775012e LM |
14332 | /* Mark breakpoint locations modified. */ |
14333 | mark_breakpoint_modified (bpt); | |
14334 | ||
d248b706 KY |
14335 | if (target_supports_enable_disable_tracepoint () |
14336 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14337 | { | |
14338 | struct bp_location *location; | |
14339 | ||
14340 | for (location = bpt->loc; location; location = location->next) | |
14341 | target_disable_tracepoint (location); | |
14342 | } | |
14343 | ||
44702360 | 14344 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14345 | |
8d3788bd | 14346 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14347 | } |
14348 | ||
c906108c | 14349 | static void |
fba45db2 | 14350 | disable_command (char *args, int from_tty) |
c906108c | 14351 | { |
c906108c | 14352 | if (args == 0) |
46c6471b PA |
14353 | { |
14354 | struct breakpoint *bpt; | |
14355 | ||
14356 | ALL_BREAKPOINTS (bpt) | |
14357 | if (user_breakpoint_p (bpt)) | |
14358 | disable_breakpoint (bpt); | |
14359 | } | |
9eaabc75 | 14360 | else |
0d381245 | 14361 | { |
cb791d59 | 14362 | std::string num = extract_arg (&args); |
9eaabc75 | 14363 | |
cb791d59 | 14364 | while (!num.empty ()) |
d248b706 | 14365 | { |
cb791d59 | 14366 | if (num.find ('.') != std::string::npos) |
b775012e | 14367 | { |
cb791d59 | 14368 | struct bp_location *loc = find_location_by_number (num.c_str ()); |
9eaabc75 MW |
14369 | |
14370 | if (loc) | |
14371 | { | |
14372 | if (loc->enabled) | |
14373 | { | |
14374 | loc->enabled = 0; | |
14375 | mark_breakpoint_location_modified (loc); | |
14376 | } | |
14377 | if (target_supports_enable_disable_tracepoint () | |
14378 | && current_trace_status ()->running && loc->owner | |
14379 | && is_tracepoint (loc->owner)) | |
14380 | target_disable_tracepoint (loc); | |
14381 | } | |
44702360 | 14382 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 14383 | } |
9eaabc75 | 14384 | else |
48649e1b TT |
14385 | map_breakpoint_numbers |
14386 | (num.c_str (), [&] (breakpoint *b) | |
14387 | { | |
14388 | iterate_over_related_breakpoints (b, disable_breakpoint); | |
14389 | }); | |
9eaabc75 | 14390 | num = extract_arg (&args); |
d248b706 | 14391 | } |
0d381245 | 14392 | } |
c906108c SS |
14393 | } |
14394 | ||
14395 | static void | |
816338b5 SS |
14396 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14397 | int count) | |
c906108c | 14398 | { |
afe38095 | 14399 | int target_resources_ok; |
c906108c SS |
14400 | |
14401 | if (bpt->type == bp_hardware_breakpoint) | |
14402 | { | |
14403 | int i; | |
c5aa993b | 14404 | i = hw_breakpoint_used_count (); |
53a5351d | 14405 | target_resources_ok = |
d92524f1 | 14406 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14407 | i + 1, 0); |
c906108c | 14408 | if (target_resources_ok == 0) |
8a3fe4f8 | 14409 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14410 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14411 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14412 | } |
14413 | ||
cc60f2e3 | 14414 | if (is_watchpoint (bpt)) |
c906108c | 14415 | { |
d07205c2 | 14416 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14417 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14418 | |
492d29ea | 14419 | TRY |
c906108c | 14420 | { |
3a5c3e22 PA |
14421 | struct watchpoint *w = (struct watchpoint *) bpt; |
14422 | ||
1e718ff1 TJB |
14423 | orig_enable_state = bpt->enable_state; |
14424 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14425 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14426 | } |
492d29ea | 14427 | CATCH (e, RETURN_MASK_ALL) |
c5aa993b | 14428 | { |
1e718ff1 | 14429 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14430 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14431 | bpt->number); | |
14432 | return; | |
c5aa993b | 14433 | } |
492d29ea | 14434 | END_CATCH |
c906108c | 14435 | } |
0101ce28 | 14436 | |
b775012e LM |
14437 | bpt->enable_state = bp_enabled; |
14438 | ||
14439 | /* Mark breakpoint locations modified. */ | |
14440 | mark_breakpoint_modified (bpt); | |
14441 | ||
d248b706 KY |
14442 | if (target_supports_enable_disable_tracepoint () |
14443 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14444 | { | |
14445 | struct bp_location *location; | |
14446 | ||
14447 | for (location = bpt->loc; location; location = location->next) | |
14448 | target_enable_tracepoint (location); | |
14449 | } | |
14450 | ||
b4c291bb | 14451 | bpt->disposition = disposition; |
816338b5 | 14452 | bpt->enable_count = count; |
44702360 | 14453 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14454 | |
8d3788bd | 14455 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14456 | } |
14457 | ||
fe3f5fa8 | 14458 | |
c906108c | 14459 | void |
fba45db2 | 14460 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14461 | { |
816338b5 | 14462 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14463 | } |
14464 | ||
c906108c SS |
14465 | /* The enable command enables the specified breakpoints (or all defined |
14466 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14467 | in stopping the inferior. */ |
c906108c | 14468 | |
c906108c | 14469 | static void |
fba45db2 | 14470 | enable_command (char *args, int from_tty) |
c906108c | 14471 | { |
c906108c | 14472 | if (args == 0) |
46c6471b PA |
14473 | { |
14474 | struct breakpoint *bpt; | |
14475 | ||
14476 | ALL_BREAKPOINTS (bpt) | |
14477 | if (user_breakpoint_p (bpt)) | |
14478 | enable_breakpoint (bpt); | |
14479 | } | |
9eaabc75 | 14480 | else |
0d381245 | 14481 | { |
cb791d59 | 14482 | std::string num = extract_arg (&args); |
9eaabc75 | 14483 | |
cb791d59 | 14484 | while (!num.empty ()) |
d248b706 | 14485 | { |
cb791d59 | 14486 | if (num.find ('.') != std::string::npos) |
b775012e | 14487 | { |
cb791d59 | 14488 | struct bp_location *loc = find_location_by_number (num.c_str ()); |
9eaabc75 MW |
14489 | |
14490 | if (loc) | |
14491 | { | |
14492 | if (!loc->enabled) | |
14493 | { | |
14494 | loc->enabled = 1; | |
14495 | mark_breakpoint_location_modified (loc); | |
14496 | } | |
14497 | if (target_supports_enable_disable_tracepoint () | |
14498 | && current_trace_status ()->running && loc->owner | |
14499 | && is_tracepoint (loc->owner)) | |
14500 | target_enable_tracepoint (loc); | |
14501 | } | |
44702360 | 14502 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 14503 | } |
9eaabc75 | 14504 | else |
48649e1b TT |
14505 | map_breakpoint_numbers |
14506 | (num.c_str (), [&] (breakpoint *b) | |
14507 | { | |
14508 | iterate_over_related_breakpoints (b, enable_breakpoint); | |
14509 | }); | |
9eaabc75 | 14510 | num = extract_arg (&args); |
d248b706 | 14511 | } |
0d381245 | 14512 | } |
c906108c SS |
14513 | } |
14514 | ||
c906108c | 14515 | static void |
4495129a | 14516 | enable_once_command (const char *args, int from_tty) |
c906108c | 14517 | { |
48649e1b TT |
14518 | map_breakpoint_numbers |
14519 | (args, [&] (breakpoint *b) | |
14520 | { | |
14521 | iterate_over_related_breakpoints | |
14522 | (b, [&] (breakpoint *bpt) | |
14523 | { | |
14524 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14525 | }); | |
14526 | }); | |
816338b5 SS |
14527 | } |
14528 | ||
14529 | static void | |
4495129a | 14530 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14531 | { |
b9d61307 SM |
14532 | int count; |
14533 | ||
14534 | if (args == NULL) | |
14535 | error_no_arg (_("hit count")); | |
14536 | ||
14537 | count = get_number (&args); | |
816338b5 | 14538 | |
48649e1b TT |
14539 | map_breakpoint_numbers |
14540 | (args, [&] (breakpoint *b) | |
14541 | { | |
14542 | iterate_over_related_breakpoints | |
14543 | (b, [&] (breakpoint *bpt) | |
14544 | { | |
14545 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14546 | }); | |
14547 | }); | |
c906108c SS |
14548 | } |
14549 | ||
c906108c | 14550 | static void |
4495129a | 14551 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14552 | { |
48649e1b TT |
14553 | map_breakpoint_numbers |
14554 | (args, [&] (breakpoint *b) | |
14555 | { | |
14556 | iterate_over_related_breakpoints | |
14557 | (b, [&] (breakpoint *bpt) | |
14558 | { | |
14559 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14560 | }); | |
14561 | }); | |
c906108c SS |
14562 | } |
14563 | \f | |
fa8d40ab JJ |
14564 | static void |
14565 | set_breakpoint_cmd (char *args, int from_tty) | |
14566 | { | |
14567 | } | |
14568 | ||
14569 | static void | |
14570 | show_breakpoint_cmd (char *args, int from_tty) | |
14571 | { | |
14572 | } | |
14573 | ||
1f3b5d1b PP |
14574 | /* Invalidate last known value of any hardware watchpoint if |
14575 | the memory which that value represents has been written to by | |
14576 | GDB itself. */ | |
14577 | ||
14578 | static void | |
8de0566d YQ |
14579 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14580 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14581 | const bfd_byte *data) |
14582 | { | |
14583 | struct breakpoint *bp; | |
14584 | ||
14585 | ALL_BREAKPOINTS (bp) | |
14586 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14587 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14588 | { |
3a5c3e22 | 14589 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14590 | |
3a5c3e22 PA |
14591 | if (wp->val_valid && wp->val) |
14592 | { | |
14593 | struct bp_location *loc; | |
14594 | ||
14595 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14596 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14597 | && loc->address + loc->length > addr | |
14598 | && addr + len > loc->address) | |
14599 | { | |
14600 | value_free (wp->val); | |
14601 | wp->val = NULL; | |
14602 | wp->val_valid = 0; | |
14603 | } | |
14604 | } | |
1f3b5d1b PP |
14605 | } |
14606 | } | |
14607 | ||
8181d85f DJ |
14608 | /* Create and insert a breakpoint for software single step. */ |
14609 | ||
14610 | void | |
6c95b8df | 14611 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14612 | struct address_space *aspace, |
14613 | CORE_ADDR next_pc) | |
8181d85f | 14614 | { |
7c16b83e PA |
14615 | struct thread_info *tp = inferior_thread (); |
14616 | struct symtab_and_line sal; | |
14617 | CORE_ADDR pc = next_pc; | |
8181d85f | 14618 | |
34b7e8a6 PA |
14619 | if (tp->control.single_step_breakpoints == NULL) |
14620 | { | |
14621 | tp->control.single_step_breakpoints | |
5d5658a1 | 14622 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14623 | } |
8181d85f | 14624 | |
7c16b83e PA |
14625 | sal = find_pc_line (pc, 0); |
14626 | sal.pc = pc; | |
14627 | sal.section = find_pc_overlay (pc); | |
14628 | sal.explicit_pc = 1; | |
34b7e8a6 | 14629 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14630 | |
7c16b83e | 14631 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14632 | } |
14633 | ||
93f9a11f YQ |
14634 | /* Insert single step breakpoints according to the current state. */ |
14635 | ||
14636 | int | |
14637 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14638 | { | |
f5ea389a | 14639 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14640 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14641 | |
f5ea389a | 14642 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14643 | |
a0ff9e1a | 14644 | if (!next_pcs.empty ()) |
93f9a11f | 14645 | { |
f5ea389a | 14646 | struct frame_info *frame = get_current_frame (); |
93f9a11f YQ |
14647 | struct address_space *aspace = get_frame_address_space (frame); |
14648 | ||
a0ff9e1a | 14649 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14650 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14651 | ||
93f9a11f YQ |
14652 | return 1; |
14653 | } | |
14654 | else | |
14655 | return 0; | |
14656 | } | |
14657 | ||
34b7e8a6 | 14658 | /* See breakpoint.h. */ |
f02253f1 HZ |
14659 | |
14660 | int | |
7c16b83e PA |
14661 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
14662 | struct address_space *aspace, | |
14663 | CORE_ADDR pc) | |
1aafd4da | 14664 | { |
7c16b83e | 14665 | struct bp_location *loc; |
1aafd4da | 14666 | |
7c16b83e PA |
14667 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14668 | if (loc->inserted | |
14669 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14670 | return 1; | |
1aafd4da | 14671 | |
7c16b83e | 14672 | return 0; |
ef370185 JB |
14673 | } |
14674 | ||
14675 | /* Check whether a software single-step breakpoint is inserted at | |
14676 | PC. */ | |
14677 | ||
14678 | int | |
14679 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, | |
14680 | CORE_ADDR pc) | |
14681 | { | |
34b7e8a6 PA |
14682 | struct breakpoint *bpt; |
14683 | ||
14684 | ALL_BREAKPOINTS (bpt) | |
14685 | { | |
14686 | if (bpt->type == bp_single_step | |
14687 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14688 | return 1; | |
14689 | } | |
14690 | return 0; | |
1aafd4da UW |
14691 | } |
14692 | ||
1042e4c0 SS |
14693 | /* Tracepoint-specific operations. */ |
14694 | ||
14695 | /* Set tracepoint count to NUM. */ | |
14696 | static void | |
14697 | set_tracepoint_count (int num) | |
14698 | { | |
14699 | tracepoint_count = num; | |
4fa62494 | 14700 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14701 | } |
14702 | ||
70221824 | 14703 | static void |
f2fc3015 | 14704 | trace_command (char *arg_in, int from_tty) |
1042e4c0 | 14705 | { |
f2fc3015 | 14706 | const char *arg = arg_in; |
55aa24fb | 14707 | struct breakpoint_ops *ops; |
55aa24fb | 14708 | |
ffc2605c TT |
14709 | event_location_up location = string_to_event_location (&arg, |
14710 | current_language); | |
5b56227b | 14711 | if (location != NULL |
ffc2605c | 14712 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14713 | ops = &tracepoint_probe_breakpoint_ops; |
14714 | else | |
14715 | ops = &tracepoint_breakpoint_ops; | |
14716 | ||
558a9d82 | 14717 | create_breakpoint (get_current_arch (), |
ffc2605c | 14718 | location.get (), |
f00aae0f | 14719 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14720 | 0 /* tempflag */, |
14721 | bp_tracepoint /* type_wanted */, | |
14722 | 0 /* Ignore count */, | |
14723 | pending_break_support, | |
14724 | ops, | |
14725 | from_tty, | |
14726 | 1 /* enabled */, | |
14727 | 0 /* internal */, 0); | |
1042e4c0 SS |
14728 | } |
14729 | ||
70221824 | 14730 | static void |
f2fc3015 | 14731 | ftrace_command (char *arg_in, int from_tty) |
7a697b8d | 14732 | { |
f2fc3015 | 14733 | const char *arg = arg_in; |
ffc2605c TT |
14734 | event_location_up location = string_to_event_location (&arg, |
14735 | current_language); | |
558a9d82 | 14736 | create_breakpoint (get_current_arch (), |
ffc2605c | 14737 | location.get (), |
f00aae0f | 14738 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14739 | 0 /* tempflag */, |
14740 | bp_fast_tracepoint /* type_wanted */, | |
14741 | 0 /* Ignore count */, | |
14742 | pending_break_support, | |
14743 | &tracepoint_breakpoint_ops, | |
14744 | from_tty, | |
14745 | 1 /* enabled */, | |
14746 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14747 | } |
14748 | ||
14749 | /* strace command implementation. Creates a static tracepoint. */ | |
14750 | ||
70221824 | 14751 | static void |
f2fc3015 | 14752 | strace_command (char *arg_in, int from_tty) |
0fb4aa4b | 14753 | { |
f2fc3015 | 14754 | const char *arg = arg_in; |
983af33b | 14755 | struct breakpoint_ops *ops; |
ffc2605c | 14756 | event_location_up location; |
f00aae0f | 14757 | struct cleanup *back_to; |
983af33b SDJ |
14758 | |
14759 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14760 | or with a normal static tracepoint. */ | |
61012eef | 14761 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14762 | { |
14763 | ops = &strace_marker_breakpoint_ops; | |
14764 | location = new_linespec_location (&arg); | |
14765 | } | |
983af33b | 14766 | else |
f00aae0f KS |
14767 | { |
14768 | ops = &tracepoint_breakpoint_ops; | |
14769 | location = string_to_event_location (&arg, current_language); | |
14770 | } | |
983af33b | 14771 | |
558a9d82 | 14772 | create_breakpoint (get_current_arch (), |
ffc2605c | 14773 | location.get (), |
f00aae0f | 14774 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14775 | 0 /* tempflag */, |
14776 | bp_static_tracepoint /* type_wanted */, | |
14777 | 0 /* Ignore count */, | |
14778 | pending_break_support, | |
14779 | ops, | |
14780 | from_tty, | |
14781 | 1 /* enabled */, | |
14782 | 0 /* internal */, 0); | |
7a697b8d SS |
14783 | } |
14784 | ||
409873ef SS |
14785 | /* Set up a fake reader function that gets command lines from a linked |
14786 | list that was acquired during tracepoint uploading. */ | |
14787 | ||
14788 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14789 | static int next_cmd; |
409873ef SS |
14790 | |
14791 | static char * | |
14792 | read_uploaded_action (void) | |
14793 | { | |
14794 | char *rslt; | |
14795 | ||
3149d8c1 | 14796 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14797 | |
3149d8c1 | 14798 | next_cmd++; |
409873ef SS |
14799 | |
14800 | return rslt; | |
14801 | } | |
14802 | ||
00bf0b85 SS |
14803 | /* Given information about a tracepoint as recorded on a target (which |
14804 | can be either a live system or a trace file), attempt to create an | |
14805 | equivalent GDB tracepoint. This is not a reliable process, since | |
14806 | the target does not necessarily have all the information used when | |
14807 | the tracepoint was originally defined. */ | |
14808 | ||
d9b3f62e | 14809 | struct tracepoint * |
00bf0b85 | 14810 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14811 | { |
f2fc3015 TT |
14812 | const char *addr_str; |
14813 | char small_buf[100]; | |
d9b3f62e | 14814 | struct tracepoint *tp; |
fd9b8c24 | 14815 | |
409873ef SS |
14816 | if (utp->at_string) |
14817 | addr_str = utp->at_string; | |
14818 | else | |
14819 | { | |
14820 | /* In the absence of a source location, fall back to raw | |
14821 | address. Since there is no way to confirm that the address | |
14822 | means the same thing as when the trace was started, warn the | |
14823 | user. */ | |
3e43a32a MS |
14824 | warning (_("Uploaded tracepoint %d has no " |
14825 | "source location, using raw address"), | |
409873ef | 14826 | utp->number); |
8c042590 | 14827 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14828 | addr_str = small_buf; |
14829 | } | |
14830 | ||
14831 | /* There's not much we can do with a sequence of bytecodes. */ | |
14832 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14833 | warning (_("Uploaded tracepoint %d condition " |
14834 | "has no source form, ignoring it"), | |
409873ef | 14835 | utp->number); |
d5551862 | 14836 | |
ffc2605c TT |
14837 | event_location_up location = string_to_event_location (&addr_str, |
14838 | current_language); | |
8cdf0e15 | 14839 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14840 | location.get (), |
f00aae0f | 14841 | utp->cond_string, -1, addr_str, |
e7e0cddf | 14842 | 0 /* parse cond/thread */, |
8cdf0e15 | 14843 | 0 /* tempflag */, |
0fb4aa4b | 14844 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14845 | 0 /* Ignore count */, |
14846 | pending_break_support, | |
348d480f | 14847 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14848 | 0 /* from_tty */, |
84f4c1fe | 14849 | utp->enabled /* enabled */, |
44f238bb PA |
14850 | 0 /* internal */, |
14851 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14852 | return NULL; |
fd9b8c24 | 14853 | |
409873ef | 14854 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14855 | tp = get_tracepoint (tracepoint_count); |
14856 | gdb_assert (tp != NULL); | |
d5551862 | 14857 | |
00bf0b85 SS |
14858 | if (utp->pass > 0) |
14859 | { | |
8c042590 | 14860 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14861 | tp->number); |
00bf0b85 | 14862 | |
409873ef | 14863 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14864 | } |
14865 | ||
409873ef SS |
14866 | /* If we have uploaded versions of the original commands, set up a |
14867 | special-purpose "reader" function and call the usual command line | |
14868 | reader, then pass the result to the breakpoint command-setting | |
14869 | function. */ | |
3149d8c1 | 14870 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14871 | { |
93921405 | 14872 | command_line_up cmd_list; |
00bf0b85 | 14873 | |
409873ef | 14874 | this_utp = utp; |
3149d8c1 | 14875 | next_cmd = 0; |
d5551862 | 14876 | |
409873ef SS |
14877 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14878 | ||
c1fc2657 | 14879 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14880 | } |
3149d8c1 SS |
14881 | else if (!VEC_empty (char_ptr, utp->actions) |
14882 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14883 | warning (_("Uploaded tracepoint %d actions " |
14884 | "have no source form, ignoring them"), | |
409873ef | 14885 | utp->number); |
00bf0b85 | 14886 | |
f196051f | 14887 | /* Copy any status information that might be available. */ |
c1fc2657 | 14888 | tp->hit_count = utp->hit_count; |
f196051f SS |
14889 | tp->traceframe_usage = utp->traceframe_usage; |
14890 | ||
00bf0b85 | 14891 | return tp; |
d9b3f62e | 14892 | } |
00bf0b85 | 14893 | |
1042e4c0 SS |
14894 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14895 | omitted. */ | |
14896 | ||
14897 | static void | |
11db9430 | 14898 | info_tracepoints_command (char *args, int from_tty) |
1042e4c0 | 14899 | { |
79a45e25 | 14900 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14901 | int num_printed; |
1042e4c0 | 14902 | |
e5a67952 | 14903 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14904 | |
14905 | if (num_printed == 0) | |
1042e4c0 | 14906 | { |
e5a67952 | 14907 | if (args == NULL || *args == '\0') |
112e8700 | 14908 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14909 | else |
112e8700 | 14910 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14911 | } |
ad443146 SS |
14912 | |
14913 | default_collect_info (); | |
1042e4c0 SS |
14914 | } |
14915 | ||
4a64f543 | 14916 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14917 | Not supported by all targets. */ |
14918 | static void | |
14919 | enable_trace_command (char *args, int from_tty) | |
14920 | { | |
14921 | enable_command (args, from_tty); | |
14922 | } | |
14923 | ||
4a64f543 | 14924 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14925 | Not supported by all targets. */ |
14926 | static void | |
14927 | disable_trace_command (char *args, int from_tty) | |
14928 | { | |
14929 | disable_command (args, from_tty); | |
14930 | } | |
14931 | ||
4a64f543 | 14932 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14933 | static void |
4495129a | 14934 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14935 | { |
35df4500 | 14936 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14937 | |
14938 | dont_repeat (); | |
14939 | ||
14940 | if (arg == 0) | |
14941 | { | |
14942 | int breaks_to_delete = 0; | |
14943 | ||
14944 | /* Delete all breakpoints if no argument. | |
14945 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14946 | have to be deleted with an explicit breakpoint number |
14947 | argument. */ | |
1042e4c0 | 14948 | ALL_TRACEPOINTS (b) |
46c6471b | 14949 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14950 | { |
14951 | breaks_to_delete = 1; | |
14952 | break; | |
14953 | } | |
1042e4c0 SS |
14954 | |
14955 | /* Ask user only if there are some breakpoints to delete. */ | |
14956 | if (!from_tty | |
14957 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14958 | { | |
35df4500 | 14959 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14960 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14961 | delete_breakpoint (b); |
1042e4c0 SS |
14962 | } |
14963 | } | |
14964 | else | |
48649e1b TT |
14965 | map_breakpoint_numbers |
14966 | (arg, [&] (breakpoint *b) | |
14967 | { | |
14968 | iterate_over_related_breakpoints (b, delete_breakpoint); | |
14969 | }); | |
1042e4c0 SS |
14970 | } |
14971 | ||
197f0a60 TT |
14972 | /* Helper function for trace_pass_command. */ |
14973 | ||
14974 | static void | |
d9b3f62e | 14975 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14976 | { |
d9b3f62e | 14977 | tp->pass_count = count; |
c1fc2657 | 14978 | observer_notify_breakpoint_modified (tp); |
197f0a60 TT |
14979 | if (from_tty) |
14980 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14981 | tp->number, count); |
197f0a60 TT |
14982 | } |
14983 | ||
1042e4c0 SS |
14984 | /* Set passcount for tracepoint. |
14985 | ||
14986 | First command argument is passcount, second is tracepoint number. | |
14987 | If tracepoint number omitted, apply to most recently defined. | |
14988 | Also accepts special argument "all". */ | |
14989 | ||
14990 | static void | |
14991 | trace_pass_command (char *args, int from_tty) | |
14992 | { | |
d9b3f62e | 14993 | struct tracepoint *t1; |
1042e4c0 | 14994 | unsigned int count; |
1042e4c0 SS |
14995 | |
14996 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14997 | error (_("passcount command requires an " |
14998 | "argument (count + optional TP num)")); | |
1042e4c0 | 14999 | |
4a64f543 | 15000 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15001 | |
529480d0 | 15002 | args = skip_spaces (args); |
1042e4c0 SS |
15003 | if (*args && strncasecmp (args, "all", 3) == 0) |
15004 | { | |
d9b3f62e PA |
15005 | struct breakpoint *b; |
15006 | ||
1042e4c0 | 15007 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15008 | if (*args) |
15009 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15010 | |
d9b3f62e | 15011 | ALL_TRACEPOINTS (b) |
197f0a60 | 15012 | { |
d9b3f62e | 15013 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15014 | trace_pass_set_count (t1, count, from_tty); |
15015 | } | |
15016 | } | |
15017 | else if (*args == '\0') | |
1042e4c0 | 15018 | { |
5fa1d40e | 15019 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15020 | if (t1) |
197f0a60 TT |
15021 | trace_pass_set_count (t1, count, from_tty); |
15022 | } | |
15023 | else | |
15024 | { | |
bfd28288 PA |
15025 | number_or_range_parser parser (args); |
15026 | while (!parser.finished ()) | |
1042e4c0 | 15027 | { |
bfd28288 | 15028 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15029 | if (t1) |
15030 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15031 | } |
15032 | } | |
1042e4c0 SS |
15033 | } |
15034 | ||
d9b3f62e | 15035 | struct tracepoint * |
1042e4c0 SS |
15036 | get_tracepoint (int num) |
15037 | { | |
15038 | struct breakpoint *t; | |
15039 | ||
15040 | ALL_TRACEPOINTS (t) | |
15041 | if (t->number == num) | |
d9b3f62e | 15042 | return (struct tracepoint *) t; |
1042e4c0 SS |
15043 | |
15044 | return NULL; | |
15045 | } | |
15046 | ||
d5551862 SS |
15047 | /* Find the tracepoint with the given target-side number (which may be |
15048 | different from the tracepoint number after disconnecting and | |
15049 | reconnecting). */ | |
15050 | ||
d9b3f62e | 15051 | struct tracepoint * |
d5551862 SS |
15052 | get_tracepoint_by_number_on_target (int num) |
15053 | { | |
d9b3f62e | 15054 | struct breakpoint *b; |
d5551862 | 15055 | |
d9b3f62e PA |
15056 | ALL_TRACEPOINTS (b) |
15057 | { | |
15058 | struct tracepoint *t = (struct tracepoint *) b; | |
15059 | ||
15060 | if (t->number_on_target == num) | |
15061 | return t; | |
15062 | } | |
d5551862 SS |
15063 | |
15064 | return NULL; | |
15065 | } | |
15066 | ||
1042e4c0 | 15067 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15068 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15069 | If the argument is missing, the most recent tracepoint |
15070 | (tracepoint_count) is returned. */ | |
15071 | ||
d9b3f62e | 15072 | struct tracepoint * |
197f0a60 | 15073 | get_tracepoint_by_number (char **arg, |
bfd28288 | 15074 | number_or_range_parser *parser) |
1042e4c0 | 15075 | { |
1042e4c0 SS |
15076 | struct breakpoint *t; |
15077 | int tpnum; | |
15078 | char *instring = arg == NULL ? NULL : *arg; | |
15079 | ||
bfd28288 | 15080 | if (parser != NULL) |
197f0a60 | 15081 | { |
bfd28288 PA |
15082 | gdb_assert (!parser->finished ()); |
15083 | tpnum = parser->get_number (); | |
197f0a60 TT |
15084 | } |
15085 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15086 | tpnum = tracepoint_count; |
1042e4c0 | 15087 | else |
197f0a60 | 15088 | tpnum = get_number (arg); |
1042e4c0 SS |
15089 | |
15090 | if (tpnum <= 0) | |
15091 | { | |
15092 | if (instring && *instring) | |
15093 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15094 | instring); | |
15095 | else | |
5fa1d40e | 15096 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15097 | return NULL; |
15098 | } | |
15099 | ||
15100 | ALL_TRACEPOINTS (t) | |
15101 | if (t->number == tpnum) | |
15102 | { | |
d9b3f62e | 15103 | return (struct tracepoint *) t; |
1042e4c0 SS |
15104 | } |
15105 | ||
1042e4c0 SS |
15106 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15107 | return NULL; | |
15108 | } | |
15109 | ||
d9b3f62e PA |
15110 | void |
15111 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15112 | { | |
15113 | if (b->thread != -1) | |
15114 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15115 | ||
15116 | if (b->task != 0) | |
15117 | fprintf_unfiltered (fp, " task %d", b->task); | |
15118 | ||
15119 | fprintf_unfiltered (fp, "\n"); | |
15120 | } | |
15121 | ||
6149aea9 PA |
15122 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15123 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15124 | on each breakpoint and only include the ones for which it returns | |
15125 | non-zero. */ | |
15126 | ||
1042e4c0 | 15127 | static void |
4495129a | 15128 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 15129 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15130 | { |
15131 | struct breakpoint *tp; | |
6149aea9 | 15132 | int any = 0; |
6149aea9 | 15133 | int extra_trace_bits = 0; |
1042e4c0 | 15134 | |
6149aea9 PA |
15135 | if (filename == 0 || *filename == 0) |
15136 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15137 | |
15138 | /* See if we have anything to save. */ | |
6149aea9 | 15139 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15140 | { |
6149aea9 | 15141 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15142 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15143 | continue; |
15144 | ||
15145 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15146 | if (filter && !filter (tp)) | |
15147 | continue; | |
15148 | ||
15149 | any = 1; | |
15150 | ||
15151 | if (is_tracepoint (tp)) | |
15152 | { | |
15153 | extra_trace_bits = 1; | |
15154 | ||
15155 | /* We can stop searching. */ | |
15156 | break; | |
15157 | } | |
1042e4c0 | 15158 | } |
6149aea9 PA |
15159 | |
15160 | if (!any) | |
1042e4c0 | 15161 | { |
6149aea9 | 15162 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15163 | return; |
15164 | } | |
15165 | ||
ee0c3293 | 15166 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15167 | |
15168 | stdio_file fp; | |
15169 | ||
ee0c3293 | 15170 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15171 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15172 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15173 | |
6149aea9 | 15174 | if (extra_trace_bits) |
d7e74731 | 15175 | save_trace_state_variables (&fp); |
8bf6485c | 15176 | |
6149aea9 | 15177 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15178 | { |
6149aea9 | 15179 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15180 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15181 | continue; |
8bf6485c | 15182 | |
6149aea9 PA |
15183 | /* If we have a filter, only save the breakpoints it accepts. */ |
15184 | if (filter && !filter (tp)) | |
15185 | continue; | |
15186 | ||
d7e74731 | 15187 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15188 | |
6149aea9 PA |
15189 | /* Note, we can't rely on tp->number for anything, as we can't |
15190 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15191 | instead. */ | |
15192 | ||
15193 | if (tp->cond_string) | |
d7e74731 | 15194 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15195 | |
15196 | if (tp->ignore_count) | |
d7e74731 | 15197 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15198 | |
2d9442cc | 15199 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15200 | { |
d7e74731 | 15201 | fp.puts (" commands\n"); |
a7bdde9e | 15202 | |
d7e74731 | 15203 | current_uiout->redirect (&fp); |
492d29ea | 15204 | TRY |
1042e4c0 | 15205 | { |
d1b0a7bf | 15206 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15207 | } |
492d29ea PA |
15208 | CATCH (ex, RETURN_MASK_ALL) |
15209 | { | |
112e8700 | 15210 | current_uiout->redirect (NULL); |
492d29ea PA |
15211 | throw_exception (ex); |
15212 | } | |
15213 | END_CATCH | |
1042e4c0 | 15214 | |
112e8700 | 15215 | current_uiout->redirect (NULL); |
d7e74731 | 15216 | fp.puts (" end\n"); |
1042e4c0 | 15217 | } |
6149aea9 PA |
15218 | |
15219 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15220 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15221 | |
15222 | /* If this is a multi-location breakpoint, check if the locations | |
15223 | should be individually disabled. Watchpoint locations are | |
15224 | special, and not user visible. */ | |
15225 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15226 | { | |
15227 | struct bp_location *loc; | |
15228 | int n = 1; | |
15229 | ||
15230 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15231 | if (!loc->enabled) | |
d7e74731 | 15232 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15233 | } |
1042e4c0 | 15234 | } |
8bf6485c | 15235 | |
6149aea9 | 15236 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15237 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15238 | |
1042e4c0 | 15239 | if (from_tty) |
ee0c3293 | 15240 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15241 | } |
15242 | ||
15243 | /* The `save breakpoints' command. */ | |
15244 | ||
15245 | static void | |
4495129a | 15246 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15247 | { |
15248 | save_breakpoints (args, from_tty, NULL); | |
15249 | } | |
15250 | ||
15251 | /* The `save tracepoints' command. */ | |
15252 | ||
15253 | static void | |
4495129a | 15254 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15255 | { |
15256 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15257 | } |
15258 | ||
15259 | /* Create a vector of all tracepoints. */ | |
15260 | ||
15261 | VEC(breakpoint_p) * | |
eeae04df | 15262 | all_tracepoints (void) |
1042e4c0 SS |
15263 | { |
15264 | VEC(breakpoint_p) *tp_vec = 0; | |
15265 | struct breakpoint *tp; | |
15266 | ||
15267 | ALL_TRACEPOINTS (tp) | |
15268 | { | |
15269 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15270 | } | |
15271 | ||
15272 | return tp_vec; | |
15273 | } | |
15274 | ||
c906108c | 15275 | \f |
629500fa KS |
15276 | /* This help string is used to consolidate all the help string for specifying |
15277 | locations used by several commands. */ | |
15278 | ||
15279 | #define LOCATION_HELP_STRING \ | |
15280 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15281 | source filename, function name, label name, and line number.\n\ | |
15282 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15283 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15284 | \"factorial.c:fact:the_top\".\n\ | |
15285 | \n\ | |
15286 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15287 | program. Example: To specify the fourth byte past the start function\n\ | |
15288 | \"main\", use \"*main + 4\".\n\ | |
15289 | \n\ | |
15290 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15291 | syntax to specify location parameters.\n\ | |
15292 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15293 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
15294 | -function fact -label the_top\".\n" | |
15295 | ||
4a64f543 MS |
15296 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15297 | commands. It is defined as a macro to prevent duplication. | |
15298 | COMMAND should be a string constant containing the name of the | |
15299 | command. */ | |
629500fa | 15300 | |
31e2b00f | 15301 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15302 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15303 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15304 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15305 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15306 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15307 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15308 | below.\n\ | |
15309 | \n\ | |
dc10affe PA |
15310 | With no LOCATION, uses current execution address of the selected\n\ |
15311 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15312 | \n\ |
15313 | THREADNUM is the number from \"info threads\".\n\ | |
15314 | CONDITION is a boolean expression.\n\ | |
629500fa | 15315 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15316 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15317 | conditions are different.\n\ | |
31e2b00f AS |
15318 | \n\ |
15319 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15320 | ||
44feb3ce TT |
15321 | /* List of subcommands for "catch". */ |
15322 | static struct cmd_list_element *catch_cmdlist; | |
15323 | ||
15324 | /* List of subcommands for "tcatch". */ | |
15325 | static struct cmd_list_element *tcatch_cmdlist; | |
15326 | ||
9ac4176b | 15327 | void |
a121b7c1 | 15328 | add_catch_command (const char *name, const char *docstring, |
82ae6c8d | 15329 | cmd_sfunc_ftype *sfunc, |
625e8578 | 15330 | completer_ftype *completer, |
44feb3ce TT |
15331 | void *user_data_catch, |
15332 | void *user_data_tcatch) | |
15333 | { | |
15334 | struct cmd_list_element *command; | |
15335 | ||
0450cc4c | 15336 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15337 | &catch_cmdlist); |
15338 | set_cmd_sfunc (command, sfunc); | |
15339 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15340 | set_cmd_completer (command, completer); |
44feb3ce | 15341 | |
0450cc4c | 15342 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15343 | &tcatch_cmdlist); |
15344 | set_cmd_sfunc (command, sfunc); | |
15345 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15346 | set_cmd_completer (command, completer); |
44feb3ce TT |
15347 | } |
15348 | ||
6149aea9 PA |
15349 | static void |
15350 | save_command (char *arg, int from_tty) | |
15351 | { | |
3e43a32a MS |
15352 | printf_unfiltered (_("\"save\" must be followed by " |
15353 | "the name of a save subcommand.\n")); | |
635c7e8a | 15354 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15355 | } |
15356 | ||
84f4c1fe PM |
15357 | struct breakpoint * |
15358 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15359 | void *data) | |
15360 | { | |
35df4500 | 15361 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15362 | |
35df4500 | 15363 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15364 | { |
15365 | if ((*callback) (b, data)) | |
15366 | return b; | |
15367 | } | |
15368 | ||
15369 | return NULL; | |
15370 | } | |
15371 | ||
0574c78f GB |
15372 | /* Zero if any of the breakpoint's locations could be a location where |
15373 | functions have been inlined, nonzero otherwise. */ | |
15374 | ||
15375 | static int | |
15376 | is_non_inline_function (struct breakpoint *b) | |
15377 | { | |
15378 | /* The shared library event breakpoint is set on the address of a | |
15379 | non-inline function. */ | |
15380 | if (b->type == bp_shlib_event) | |
15381 | return 1; | |
15382 | ||
15383 | return 0; | |
15384 | } | |
15385 | ||
15386 | /* Nonzero if the specified PC cannot be a location where functions | |
15387 | have been inlined. */ | |
15388 | ||
15389 | int | |
09ac7c10 TT |
15390 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15391 | const struct target_waitstatus *ws) | |
0574c78f GB |
15392 | { |
15393 | struct breakpoint *b; | |
15394 | struct bp_location *bl; | |
15395 | ||
15396 | ALL_BREAKPOINTS (b) | |
15397 | { | |
15398 | if (!is_non_inline_function (b)) | |
15399 | continue; | |
15400 | ||
15401 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15402 | { | |
15403 | if (!bl->shlib_disabled | |
09ac7c10 | 15404 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15405 | return 1; |
15406 | } | |
15407 | } | |
15408 | ||
15409 | return 0; | |
15410 | } | |
15411 | ||
2f202fde JK |
15412 | /* Remove any references to OBJFILE which is going to be freed. */ |
15413 | ||
15414 | void | |
15415 | breakpoint_free_objfile (struct objfile *objfile) | |
15416 | { | |
15417 | struct bp_location **locp, *loc; | |
15418 | ||
15419 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15420 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15421 | loc->symtab = NULL; |
15422 | } | |
15423 | ||
2060206e PA |
15424 | void |
15425 | initialize_breakpoint_ops (void) | |
15426 | { | |
15427 | static int initialized = 0; | |
15428 | ||
15429 | struct breakpoint_ops *ops; | |
15430 | ||
15431 | if (initialized) | |
15432 | return; | |
15433 | initialized = 1; | |
15434 | ||
15435 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15436 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15437 | internal and momentary breakpoints, etc.). */ | |
15438 | ops = &bkpt_base_breakpoint_ops; | |
15439 | *ops = base_breakpoint_ops; | |
15440 | ops->re_set = bkpt_re_set; | |
15441 | ops->insert_location = bkpt_insert_location; | |
15442 | ops->remove_location = bkpt_remove_location; | |
15443 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15444 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15445 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15446 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15447 | |
15448 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15449 | ops = &bkpt_breakpoint_ops; | |
15450 | *ops = bkpt_base_breakpoint_ops; | |
15451 | ops->re_set = bkpt_re_set; | |
15452 | ops->resources_needed = bkpt_resources_needed; | |
15453 | ops->print_it = bkpt_print_it; | |
15454 | ops->print_mention = bkpt_print_mention; | |
15455 | ops->print_recreate = bkpt_print_recreate; | |
15456 | ||
15457 | /* Ranged breakpoints. */ | |
15458 | ops = &ranged_breakpoint_ops; | |
15459 | *ops = bkpt_breakpoint_ops; | |
15460 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15461 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15462 | ops->print_it = print_it_ranged_breakpoint; | |
15463 | ops->print_one = print_one_ranged_breakpoint; | |
15464 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15465 | ops->print_mention = print_mention_ranged_breakpoint; | |
15466 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15467 | ||
15468 | /* Internal breakpoints. */ | |
15469 | ops = &internal_breakpoint_ops; | |
15470 | *ops = bkpt_base_breakpoint_ops; | |
15471 | ops->re_set = internal_bkpt_re_set; | |
15472 | ops->check_status = internal_bkpt_check_status; | |
15473 | ops->print_it = internal_bkpt_print_it; | |
15474 | ops->print_mention = internal_bkpt_print_mention; | |
15475 | ||
15476 | /* Momentary breakpoints. */ | |
15477 | ops = &momentary_breakpoint_ops; | |
15478 | *ops = bkpt_base_breakpoint_ops; | |
15479 | ops->re_set = momentary_bkpt_re_set; | |
15480 | ops->check_status = momentary_bkpt_check_status; | |
15481 | ops->print_it = momentary_bkpt_print_it; | |
15482 | ops->print_mention = momentary_bkpt_print_mention; | |
15483 | ||
55aa24fb SDJ |
15484 | /* Probe breakpoints. */ |
15485 | ops = &bkpt_probe_breakpoint_ops; | |
15486 | *ops = bkpt_breakpoint_ops; | |
15487 | ops->insert_location = bkpt_probe_insert_location; | |
15488 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15489 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15490 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15491 | |
2060206e PA |
15492 | /* Watchpoints. */ |
15493 | ops = &watchpoint_breakpoint_ops; | |
15494 | *ops = base_breakpoint_ops; | |
15495 | ops->re_set = re_set_watchpoint; | |
15496 | ops->insert_location = insert_watchpoint; | |
15497 | ops->remove_location = remove_watchpoint; | |
15498 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15499 | ops->check_status = check_status_watchpoint; | |
15500 | ops->resources_needed = resources_needed_watchpoint; | |
15501 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15502 | ops->print_it = print_it_watchpoint; | |
15503 | ops->print_mention = print_mention_watchpoint; | |
15504 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15505 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15506 | |
15507 | /* Masked watchpoints. */ | |
15508 | ops = &masked_watchpoint_breakpoint_ops; | |
15509 | *ops = watchpoint_breakpoint_ops; | |
15510 | ops->insert_location = insert_masked_watchpoint; | |
15511 | ops->remove_location = remove_masked_watchpoint; | |
15512 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15513 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15514 | ops->print_it = print_it_masked_watchpoint; | |
15515 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15516 | ops->print_mention = print_mention_masked_watchpoint; | |
15517 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15518 | ||
15519 | /* Tracepoints. */ | |
15520 | ops = &tracepoint_breakpoint_ops; | |
15521 | *ops = base_breakpoint_ops; | |
15522 | ops->re_set = tracepoint_re_set; | |
15523 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15524 | ops->print_one_detail = tracepoint_print_one_detail; | |
15525 | ops->print_mention = tracepoint_print_mention; | |
15526 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15527 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15528 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15529 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15530 | |
55aa24fb SDJ |
15531 | /* Probe tracepoints. */ |
15532 | ops = &tracepoint_probe_breakpoint_ops; | |
15533 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15534 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15535 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15536 | |
983af33b SDJ |
15537 | /* Static tracepoints with marker (`-m'). */ |
15538 | ops = &strace_marker_breakpoint_ops; | |
15539 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15540 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15541 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15542 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15543 | |
15544 | /* Fork catchpoints. */ | |
15545 | ops = &catch_fork_breakpoint_ops; | |
15546 | *ops = base_breakpoint_ops; | |
15547 | ops->insert_location = insert_catch_fork; | |
15548 | ops->remove_location = remove_catch_fork; | |
15549 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15550 | ops->print_it = print_it_catch_fork; | |
15551 | ops->print_one = print_one_catch_fork; | |
15552 | ops->print_mention = print_mention_catch_fork; | |
15553 | ops->print_recreate = print_recreate_catch_fork; | |
15554 | ||
15555 | /* Vfork catchpoints. */ | |
15556 | ops = &catch_vfork_breakpoint_ops; | |
15557 | *ops = base_breakpoint_ops; | |
15558 | ops->insert_location = insert_catch_vfork; | |
15559 | ops->remove_location = remove_catch_vfork; | |
15560 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15561 | ops->print_it = print_it_catch_vfork; | |
15562 | ops->print_one = print_one_catch_vfork; | |
15563 | ops->print_mention = print_mention_catch_vfork; | |
15564 | ops->print_recreate = print_recreate_catch_vfork; | |
15565 | ||
15566 | /* Exec catchpoints. */ | |
15567 | ops = &catch_exec_breakpoint_ops; | |
15568 | *ops = base_breakpoint_ops; | |
2060206e PA |
15569 | ops->insert_location = insert_catch_exec; |
15570 | ops->remove_location = remove_catch_exec; | |
15571 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15572 | ops->print_it = print_it_catch_exec; | |
15573 | ops->print_one = print_one_catch_exec; | |
15574 | ops->print_mention = print_mention_catch_exec; | |
15575 | ops->print_recreate = print_recreate_catch_exec; | |
15576 | ||
edcc5120 TT |
15577 | /* Solib-related catchpoints. */ |
15578 | ops = &catch_solib_breakpoint_ops; | |
15579 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15580 | ops->insert_location = insert_catch_solib; |
15581 | ops->remove_location = remove_catch_solib; | |
15582 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15583 | ops->check_status = check_status_catch_solib; | |
15584 | ops->print_it = print_it_catch_solib; | |
15585 | ops->print_one = print_one_catch_solib; | |
15586 | ops->print_mention = print_mention_catch_solib; | |
15587 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15588 | |
15589 | ops = &dprintf_breakpoint_ops; | |
15590 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15591 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15592 | ops->resources_needed = bkpt_resources_needed; |
15593 | ops->print_it = bkpt_print_it; | |
15594 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15595 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15596 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15597 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15598 | } |
15599 | ||
8bfd80db YQ |
15600 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15601 | ||
15602 | static struct cmd_list_element *enablebreaklist = NULL; | |
15603 | ||
c906108c | 15604 | void |
fba45db2 | 15605 | _initialize_breakpoint (void) |
c906108c SS |
15606 | { |
15607 | struct cmd_list_element *c; | |
15608 | ||
2060206e PA |
15609 | initialize_breakpoint_ops (); |
15610 | ||
84acb35a | 15611 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 15612 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
1f3b5d1b | 15613 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15614 | |
55aa24fb SDJ |
15615 | breakpoint_objfile_key |
15616 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15617 | |
c906108c SS |
15618 | breakpoint_chain = 0; |
15619 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15620 | before a breakpoint is set. */ | |
15621 | breakpoint_count = 0; | |
15622 | ||
1042e4c0 SS |
15623 | tracepoint_count = 0; |
15624 | ||
1bedd215 AC |
15625 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15626 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15627 | Usage is `ignore N COUNT'.")); | |
c906108c | 15628 | |
1bedd215 | 15629 | add_com ("commands", class_breakpoint, commands_command, _("\ |
18da0c51 MG |
15630 | Set commands to be executed when the given breakpoints are hit.\n\ |
15631 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15632 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15633 | (e.g. `5-7').\n\ | |
c906108c SS |
15634 | With no argument, the targeted breakpoint is the last one set.\n\ |
15635 | The commands themselves follow starting on the next line.\n\ | |
15636 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15637 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15638 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15639 | |
d55637df | 15640 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15641 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15642 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15643 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15644 | set_cmd_completer (c, condition_completer); |
c906108c | 15645 | |
1bedd215 | 15646 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15647 | Set a temporary breakpoint.\n\ |
c906108c SS |
15648 | Like \"break\" except the breakpoint is only temporary,\n\ |
15649 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15650 | by using \"enable delete\" on the breakpoint number.\n\ |
15651 | \n" | |
15652 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15653 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15654 | |
1bedd215 | 15655 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15656 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15657 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15658 | some target hardware may not have this support.\n\ |
15659 | \n" | |
15660 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15661 | set_cmd_completer (c, location_completer); |
c906108c | 15662 | |
1bedd215 | 15663 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15664 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15665 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15666 | so it will be deleted when hit.\n\ |
15667 | \n" | |
15668 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15669 | set_cmd_completer (c, location_completer); |
c906108c | 15670 | |
1bedd215 AC |
15671 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15672 | Enable some breakpoints.\n\ | |
c906108c SS |
15673 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15674 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15675 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15676 | With a subcommand you can enable temporarily."), |
c906108c | 15677 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15678 | |
15679 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15680 | ||
84951ab5 | 15681 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15682 | Enable some breakpoints.\n\ |
c906108c SS |
15683 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15684 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15685 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15686 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15687 | |
1a966eab AC |
15688 | add_cmd ("once", no_class, enable_once_command, _("\ |
15689 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15690 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15691 | &enablebreaklist); |
15692 | ||
1a966eab AC |
15693 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15694 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15695 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15696 | &enablebreaklist); |
15697 | ||
816338b5 SS |
15698 | add_cmd ("count", no_class, enable_count_command, _("\ |
15699 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15700 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15701 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15702 | &enablebreaklist); | |
15703 | ||
1a966eab AC |
15704 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15705 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15706 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15707 | &enablelist); |
15708 | ||
1a966eab AC |
15709 | add_cmd ("once", no_class, enable_once_command, _("\ |
15710 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15711 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15712 | &enablelist); |
15713 | ||
15714 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15715 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15716 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15717 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15718 | &enablelist); |
15719 | ||
1bedd215 AC |
15720 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15721 | Disable some breakpoints.\n\ | |
c906108c SS |
15722 | Arguments are breakpoint numbers with spaces in between.\n\ |
15723 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15724 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15725 | &disablelist, "disable ", 1, &cmdlist); |
15726 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15727 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15728 | |
1a966eab AC |
15729 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15730 | Disable some breakpoints.\n\ | |
c906108c SS |
15731 | Arguments are breakpoint numbers with spaces in between.\n\ |
15732 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15733 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15734 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15735 | &disablelist); |
15736 | ||
1bedd215 AC |
15737 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15738 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15739 | Arguments are breakpoint numbers with spaces in between.\n\ |
15740 | To delete all breakpoints, give no argument.\n\ | |
15741 | \n\ | |
15742 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15743 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15744 | &deletelist, "delete ", 1, &cmdlist); |
15745 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15746 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15747 | |
1a966eab AC |
15748 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15749 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15750 | Arguments are breakpoint numbers with spaces in between.\n\ |
15751 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15752 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15753 | &deletelist); |
15754 | ||
1bedd215 | 15755 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15756 | Clear breakpoint at specified location.\n\ |
15757 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15758 | \n\ |
15759 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa KS |
15760 | is executing in.\n" |
15761 | "\n" LOCATION_HELP_STRING "\n\ | |
1bedd215 | 15762 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15763 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15764 | |
1bedd215 | 15765 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15766 | Set breakpoint at specified location.\n" |
31e2b00f | 15767 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15768 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15769 | |
c906108c SS |
15770 | add_com_alias ("b", "break", class_run, 1); |
15771 | add_com_alias ("br", "break", class_run, 1); | |
15772 | add_com_alias ("bre", "break", class_run, 1); | |
15773 | add_com_alias ("brea", "break", class_run, 1); | |
15774 | ||
c906108c SS |
15775 | if (dbx_commands) |
15776 | { | |
1bedd215 AC |
15777 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15778 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15779 | &stoplist, "stop ", 1, &cmdlist); |
15780 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15781 | _("Break in function or address."), &stoplist); |
c5aa993b | 15782 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15783 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15784 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15785 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15786 | The \"Type\" column indicates one of:\n\ |
15787 | \tbreakpoint - normal breakpoint\n\ | |
15788 | \twatchpoint - watchpoint\n\ | |
15789 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15790 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15791 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15792 | address and file/line number respectively.\n\ |
15793 | \n\ | |
15794 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15795 | are set to the address of the last breakpoint listed unless the command\n\ |
15796 | is prefixed with \"server \".\n\n\ | |
c906108c | 15797 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15798 | breakpoint set.")); |
c906108c SS |
15799 | } |
15800 | ||
11db9430 | 15801 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15802 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15803 | The \"Type\" column indicates one of:\n\ |
15804 | \tbreakpoint - normal breakpoint\n\ | |
15805 | \twatchpoint - watchpoint\n\ | |
15806 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15807 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15808 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15809 | address and file/line number respectively.\n\ |
15810 | \n\ | |
15811 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15812 | are set to the address of the last breakpoint listed unless the command\n\ |
15813 | is prefixed with \"server \".\n\n\ | |
c906108c | 15814 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15815 | breakpoint set.")); |
c906108c | 15816 | |
6b04bdb7 MS |
15817 | add_info_alias ("b", "breakpoints", 1); |
15818 | ||
1a966eab AC |
15819 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15820 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15821 | The \"Type\" column indicates one of:\n\ |
15822 | \tbreakpoint - normal breakpoint\n\ | |
15823 | \twatchpoint - watchpoint\n\ | |
15824 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15825 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15826 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15827 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15828 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15829 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15830 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15831 | address and file/line number respectively.\n\ |
15832 | \n\ | |
15833 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15834 | are set to the address of the last breakpoint listed unless the command\n\ |
15835 | is prefixed with \"server \".\n\n\ | |
c906108c | 15836 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15837 | breakpoint set."), |
c906108c SS |
15838 | &maintenanceinfolist); |
15839 | ||
44feb3ce TT |
15840 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15841 | Set catchpoints to catch events."), | |
15842 | &catch_cmdlist, "catch ", | |
15843 | 0/*allow-unknown*/, &cmdlist); | |
15844 | ||
15845 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15846 | Set temporary catchpoints to catch events."), | |
15847 | &tcatch_cmdlist, "tcatch ", | |
15848 | 0/*allow-unknown*/, &cmdlist); | |
15849 | ||
44feb3ce TT |
15850 | add_catch_command ("fork", _("Catch calls to fork."), |
15851 | catch_fork_command_1, | |
a96d9b2e | 15852 | NULL, |
44feb3ce TT |
15853 | (void *) (uintptr_t) catch_fork_permanent, |
15854 | (void *) (uintptr_t) catch_fork_temporary); | |
15855 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15856 | catch_fork_command_1, | |
a96d9b2e | 15857 | NULL, |
44feb3ce TT |
15858 | (void *) (uintptr_t) catch_vfork_permanent, |
15859 | (void *) (uintptr_t) catch_vfork_temporary); | |
15860 | add_catch_command ("exec", _("Catch calls to exec."), | |
15861 | catch_exec_command_1, | |
a96d9b2e SDJ |
15862 | NULL, |
15863 | CATCH_PERMANENT, | |
15864 | CATCH_TEMPORARY); | |
edcc5120 TT |
15865 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15866 | Usage: catch load [REGEX]\n\ | |
15867 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15868 | catch_load_command_1, | |
15869 | NULL, | |
15870 | CATCH_PERMANENT, | |
15871 | CATCH_TEMPORARY); | |
15872 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15873 | Usage: catch unload [REGEX]\n\ | |
15874 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15875 | catch_unload_command_1, | |
15876 | NULL, | |
15877 | CATCH_PERMANENT, | |
15878 | CATCH_TEMPORARY); | |
c5aa993b | 15879 | |
1bedd215 AC |
15880 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15881 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15882 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15883 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15884 | an expression changes.\n\ |
15885 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15886 | the memory to which it refers.")); | |
65d12d83 | 15887 | set_cmd_completer (c, expression_completer); |
c906108c | 15888 | |
1bedd215 AC |
15889 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15890 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15891 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15892 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15893 | an expression is read.\n\ |
15894 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15895 | the memory to which it refers.")); | |
65d12d83 | 15896 | set_cmd_completer (c, expression_completer); |
c906108c | 15897 | |
1bedd215 AC |
15898 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15899 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15900 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15901 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15902 | an expression is either read or written.\n\ |
15903 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15904 | the memory to which it refers.")); | |
65d12d83 | 15905 | set_cmd_completer (c, expression_completer); |
c906108c | 15906 | |
11db9430 | 15907 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15908 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15909 | |
920d2a44 AC |
15910 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15911 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15912 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15913 | &can_use_hw_watchpoints, _("\ | |
15914 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15915 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15916 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15917 | such is available. (However, any hardware watchpoints that were\n\ | |
15918 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15919 | hardware.)"), |
15920 | NULL, | |
920d2a44 | 15921 | show_can_use_hw_watchpoints, |
85c07804 | 15922 | &setlist, &showlist); |
c906108c SS |
15923 | |
15924 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15925 | |
1042e4c0 SS |
15926 | /* Tracepoint manipulation commands. */ |
15927 | ||
15928 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15929 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15930 | \n" |
15931 | BREAK_ARGS_HELP ("trace") "\n\ | |
15932 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15933 | set_cmd_completer (c, location_completer); | |
15934 | ||
15935 | add_com_alias ("tp", "trace", class_alias, 0); | |
15936 | add_com_alias ("tr", "trace", class_alias, 1); | |
15937 | add_com_alias ("tra", "trace", class_alias, 1); | |
15938 | add_com_alias ("trac", "trace", class_alias, 1); | |
15939 | ||
7a697b8d | 15940 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15941 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15942 | \n" |
15943 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15944 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15945 | set_cmd_completer (c, location_completer); | |
15946 | ||
0fb4aa4b | 15947 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15948 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15949 | \n\ |
15950 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15951 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15952 | or -m MARKER_ID.\n\n\ | |
15953 | If a marker id is specified, probe the marker with that name. With\n\ | |
15954 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15955 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15956 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15957 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15958 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15959 | \n\ | |
15960 | CONDITION is a boolean expression.\n\ | |
629500fa | 15961 | \n" LOCATION_HELP_STRING "\n\ |
d41c0fc8 PA |
15962 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15963 | conditions are different.\n\ | |
0fb4aa4b PA |
15964 | \n\ |
15965 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15966 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15967 | set_cmd_completer (c, location_completer); | |
15968 | ||
11db9430 | 15969 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15970 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15971 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15972 | last tracepoint set.")); | |
15973 | ||
15974 | add_info_alias ("tp", "tracepoints", 1); | |
15975 | ||
15976 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15977 | Delete specified tracepoints.\n\ | |
15978 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15979 | No argument means delete all tracepoints."), | |
15980 | &deletelist); | |
7e20dfcd | 15981 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15982 | |
15983 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15984 | Disable specified tracepoints.\n\ | |
15985 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15986 | No argument means disable all tracepoints."), | |
15987 | &disablelist); | |
15988 | deprecate_cmd (c, "disable"); | |
15989 | ||
15990 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15991 | Enable specified tracepoints.\n\ | |
15992 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15993 | No argument means enable all tracepoints."), | |
15994 | &enablelist); | |
15995 | deprecate_cmd (c, "enable"); | |
15996 | ||
15997 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15998 | Set the passcount for a tracepoint.\n\ | |
15999 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16000 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16001 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16002 | ||
6149aea9 PA |
16003 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16004 | _("Save breakpoint definitions as a script."), | |
16005 | &save_cmdlist, "save ", | |
16006 | 0/*allow-unknown*/, &cmdlist); | |
16007 | ||
16008 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16009 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16010 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16011 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16012 | session to restore them."), | |
16013 | &save_cmdlist); | |
16014 | set_cmd_completer (c, filename_completer); | |
16015 | ||
16016 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16017 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16018 | Use the 'source' command in another debug session to restore them."), |
16019 | &save_cmdlist); | |
1042e4c0 SS |
16020 | set_cmd_completer (c, filename_completer); |
16021 | ||
6149aea9 PA |
16022 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16023 | deprecate_cmd (c, "save tracepoints"); | |
16024 | ||
1bedd215 | 16025 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16026 | Breakpoint specific settings\n\ |
16027 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16028 | pending breakpoint behavior"), |
fa8d40ab JJ |
16029 | &breakpoint_set_cmdlist, "set breakpoint ", |
16030 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16031 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16032 | Breakpoint specific settings\n\ |
16033 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16034 | pending breakpoint behavior"), |
fa8d40ab JJ |
16035 | &breakpoint_show_cmdlist, "show breakpoint ", |
16036 | 0/*allow-unknown*/, &showlist); | |
16037 | ||
7915a72c AC |
16038 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16039 | &pending_break_support, _("\ | |
16040 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16041 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16042 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16043 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16044 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16045 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16046 | NULL, |
920d2a44 | 16047 | show_pending_break_support, |
6e1d7d6c AC |
16048 | &breakpoint_set_cmdlist, |
16049 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16050 | |
16051 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16052 | |
16053 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16054 | &automatic_hardware_breakpoints, _("\ | |
16055 | Set automatic usage of hardware breakpoints."), _("\ | |
16056 | Show automatic usage of hardware breakpoints."), _("\ | |
16057 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16058 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16059 | a warning will be emitted for such breakpoints."), | |
16060 | NULL, | |
16061 | show_automatic_hardware_breakpoints, | |
16062 | &breakpoint_set_cmdlist, | |
16063 | &breakpoint_show_cmdlist); | |
74960c60 | 16064 | |
a25a5a45 PA |
16065 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16066 | &always_inserted_mode, _("\ | |
74960c60 VP |
16067 | Set mode for inserting breakpoints."), _("\ |
16068 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16069 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16070 | they're created, kept inserted even when execution stops, and removed\n\ | |
16071 | only when the user deletes them. When this mode is off (the default),\n\ | |
16072 | breakpoints are inserted only when execution continues, and removed\n\ | |
16073 | when execution stops."), | |
72d0e2c5 YQ |
16074 | NULL, |
16075 | &show_always_inserted_mode, | |
16076 | &breakpoint_set_cmdlist, | |
16077 | &breakpoint_show_cmdlist); | |
f1310107 | 16078 | |
b775012e LM |
16079 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16080 | condition_evaluation_enums, | |
16081 | &condition_evaluation_mode_1, _("\ | |
16082 | Set mode of breakpoint condition evaluation."), _("\ | |
16083 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16084 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16085 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16086 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16087 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16088 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16089 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16090 | be set to \"gdb\""), | |
16091 | &set_condition_evaluation_mode, | |
16092 | &show_condition_evaluation_mode, | |
16093 | &breakpoint_set_cmdlist, | |
16094 | &breakpoint_show_cmdlist); | |
16095 | ||
f1310107 TJB |
16096 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16097 | Set a breakpoint for an address range.\n\ | |
16098 | break-range START-LOCATION, END-LOCATION\n\ | |
16099 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16100 | LINENUM, for that line in the current file,\n\ | |
16101 | FILE:LINENUM, for that line in that file,\n\ | |
16102 | +OFFSET, for that number of lines after the current line\n\ | |
16103 | or the start of the range\n\ | |
16104 | FUNCTION, for the first line in that function,\n\ | |
16105 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16106 | *ADDRESS, for the instruction at that address.\n\ | |
16107 | \n\ | |
16108 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16109 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16110 | range (including START-LOCATION and END-LOCATION).")); | |
16111 | ||
e7e0cddf | 16112 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16113 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16114 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16115 | location may be a linespec, explicit, or address location.\n" |
16116 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16117 | set_cmd_completer (c, location_completer); |
16118 | ||
16119 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16120 | dprintf_style_enums, &dprintf_style, _("\ | |
16121 | Set the style of usage for dynamic printf."), _("\ | |
16122 | Show the style of usage for dynamic printf."), _("\ | |
16123 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16124 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16125 | console, as with the \"printf\" command.\n\ | |
16126 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16127 | program; by default printf(), but you can choose a different function or\n\ | |
16128 | output stream by setting dprintf-function and dprintf-channel."), | |
16129 | update_dprintf_commands, NULL, | |
16130 | &setlist, &showlist); | |
16131 | ||
16132 | dprintf_function = xstrdup ("printf"); | |
16133 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16134 | &dprintf_function, _("\ | |
16135 | Set the function to use for dynamic printf"), _("\ | |
16136 | Show the function to use for dynamic printf"), NULL, | |
16137 | update_dprintf_commands, NULL, | |
16138 | &setlist, &showlist); | |
16139 | ||
16140 | dprintf_channel = xstrdup (""); | |
16141 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16142 | &dprintf_channel, _("\ | |
16143 | Set the channel to use for dynamic printf"), _("\ | |
16144 | Show the channel to use for dynamic printf"), NULL, | |
16145 | update_dprintf_commands, NULL, | |
16146 | &setlist, &showlist); | |
16147 | ||
d3ce09f5 SS |
16148 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16149 | &disconnected_dprintf, _("\ | |
16150 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16151 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16152 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16153 | even if GDB disconnects or detaches from the target."), | |
16154 | NULL, | |
16155 | NULL, | |
16156 | &setlist, &showlist); | |
16157 | ||
16158 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16159 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16160 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16161 | ||
765dc015 | 16162 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16163 | |
16164 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16165 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16166 | } |