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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1986-2019 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" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
4de283e4 | 59 | #include "gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 TT |
61 | #include "cli/cli-utils.h" |
62 | #include "continuations.h" | |
d55e5aa6 | 63 | #include "stack.h" |
4de283e4 TT |
64 | #include "skip.h" |
65 | #include "ax-gdb.h" | |
66 | #include "dummy-frame.h" | |
67 | #include "interps.h" | |
268a13a5 | 68 | #include "gdbsupport/format.h" |
cfc31633 | 69 | #include "thread-fsm.h" |
5d5658a1 | 70 | #include "tid-parse.h" |
4de283e4 TT |
71 | #include "cli/cli-style.h" |
72 | #include "mi/mi-main.h" | |
d3ce09f5 | 73 | |
1042e4c0 SS |
74 | /* readline include files */ |
75 | #include "readline/readline.h" | |
76 | #include "readline/history.h" | |
77 | ||
78 | /* readline defines this. */ | |
79 | #undef savestring | |
80 | ||
034dad6f | 81 | #include "mi/mi-common.h" |
6dddc817 | 82 | #include "extension.h" |
325fac50 | 83 | #include <algorithm> |
5ed8105e | 84 | #include "progspace-and-thread.h" |
268a13a5 TT |
85 | #include "gdbsupport/array-view.h" |
86 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 87 | |
4a64f543 | 88 | /* Prototypes for local functions. */ |
c906108c | 89 | |
896b6bda | 90 | static void map_breakpoint_numbers (const char *, |
48649e1b | 91 | gdb::function_view<void (breakpoint *)>); |
c906108c | 92 | |
348d480f PA |
93 | static void breakpoint_re_set_default (struct breakpoint *); |
94 | ||
f00aae0f KS |
95 | static void |
96 | create_sals_from_location_default (const struct event_location *location, | |
97 | struct linespec_result *canonical, | |
98 | enum bptype type_wanted); | |
983af33b SDJ |
99 | |
100 | static void create_breakpoints_sal_default (struct gdbarch *, | |
101 | struct linespec_result *, | |
e1e01040 PA |
102 | gdb::unique_xmalloc_ptr<char>, |
103 | gdb::unique_xmalloc_ptr<char>, | |
104 | enum bptype, | |
983af33b SDJ |
105 | enum bpdisp, int, int, |
106 | int, | |
107 | const struct breakpoint_ops *, | |
44f238bb | 108 | int, int, int, unsigned); |
983af33b | 109 | |
6c5b2ebe PA |
110 | static std::vector<symtab_and_line> decode_location_default |
111 | (struct breakpoint *b, const struct event_location *location, | |
112 | struct program_space *search_pspace); | |
983af33b | 113 | |
a6535de1 TT |
114 | static int can_use_hardware_watchpoint |
115 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 116 | |
a14ed312 | 117 | static void mention (struct breakpoint *); |
c906108c | 118 | |
348d480f PA |
119 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
120 | enum bptype, | |
c0a91b2b | 121 | const struct breakpoint_ops *); |
3742cc8b YQ |
122 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
123 | const struct symtab_and_line *); | |
124 | ||
4a64f543 MS |
125 | /* This function is used in gdbtk sources and thus can not be made |
126 | static. */ | |
63c252f8 | 127 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 128 | struct symtab_and_line, |
c0a91b2b TT |
129 | enum bptype, |
130 | const struct breakpoint_ops *); | |
c906108c | 131 | |
06edf0c0 PA |
132 | static struct breakpoint * |
133 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
134 | enum bptype type, | |
a1aa2221 LM |
135 | const struct breakpoint_ops *ops, |
136 | int loc_enabled); | |
06edf0c0 | 137 | |
76897487 KB |
138 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
139 | ||
a6d9a66e UW |
140 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
141 | CORE_ADDR bpaddr, | |
88f7da05 | 142 | enum bptype bptype); |
76897487 | 143 | |
6c95b8df PA |
144 | static void describe_other_breakpoints (struct gdbarch *, |
145 | struct program_space *, CORE_ADDR, | |
5af949e3 | 146 | struct obj_section *, int); |
c906108c | 147 | |
85d721b8 PA |
148 | static int watchpoint_locations_match (struct bp_location *loc1, |
149 | struct bp_location *loc2); | |
150 | ||
f1310107 | 151 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 152 | const struct address_space *aspace, |
f1310107 TJB |
153 | CORE_ADDR addr); |
154 | ||
d35ae833 | 155 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 156 | const address_space *, |
d35ae833 PA |
157 | CORE_ADDR, int); |
158 | ||
834c0d03 | 159 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 160 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 161 | |
e514a9d6 | 162 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 163 | |
a14ed312 | 164 | static int hw_breakpoint_used_count (void); |
c906108c | 165 | |
a1398e0c PA |
166 | static int hw_watchpoint_use_count (struct breakpoint *); |
167 | ||
168 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
169 | enum bptype type, | |
170 | int *other_type_used); | |
c906108c | 171 | |
816338b5 SS |
172 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
173 | int count); | |
c906108c | 174 | |
fe3f5fa8 | 175 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
176 | static void incref_bp_location (struct bp_location *loc); |
177 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 178 | |
39d61571 | 179 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 180 | |
44702360 PA |
181 | /* update_global_location_list's modes of operation wrt to whether to |
182 | insert locations now. */ | |
183 | enum ugll_insert_mode | |
184 | { | |
185 | /* Don't insert any breakpoint locations into the inferior, only | |
186 | remove already-inserted locations that no longer should be | |
187 | inserted. Functions that delete a breakpoint or breakpoints | |
188 | should specify this mode, so that deleting a breakpoint doesn't | |
189 | have the side effect of inserting the locations of other | |
190 | breakpoints that are marked not-inserted, but should_be_inserted | |
191 | returns true on them. | |
192 | ||
193 | This behavior is useful is situations close to tear-down -- e.g., | |
194 | after an exec, while the target still has execution, but | |
195 | breakpoint shadows of the previous executable image should *NOT* | |
196 | be restored to the new image; or before detaching, where the | |
197 | target still has execution and wants to delete breakpoints from | |
198 | GDB's lists, and all breakpoints had already been removed from | |
199 | the inferior. */ | |
200 | UGLL_DONT_INSERT, | |
201 | ||
a25a5a45 PA |
202 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
203 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
204 | UGLL_MAY_INSERT, |
205 | ||
a25a5a45 PA |
206 | /* Insert locations now, irrespective of |
207 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
208 | stopped right now, and the user did "continue". We need to | |
209 | insert breakpoints _before_ resuming the target, but | |
210 | UGLL_MAY_INSERT wouldn't insert them, because | |
211 | breakpoints_should_be_inserted_now returns false at that point, | |
212 | as no thread is running yet. */ | |
04086b45 | 213 | UGLL_INSERT |
44702360 PA |
214 | }; |
215 | ||
216 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 217 | |
44702360 | 218 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 219 | |
d77f58be | 220 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
221 | |
222 | static void insert_breakpoint_locations (void); | |
a5606eee | 223 | |
0b39b52e | 224 | static void trace_pass_command (const char *, int); |
1042e4c0 | 225 | |
558a9d82 YQ |
226 | static void set_tracepoint_count (int num); |
227 | ||
9c06b0b4 TJB |
228 | static int is_masked_watchpoint (const struct breakpoint *b); |
229 | ||
b775012e LM |
230 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
231 | ||
983af33b SDJ |
232 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
233 | otherwise. */ | |
234 | ||
235 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 236 | |
2060206e PA |
237 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
238 | that are implemented on top of software or hardware breakpoints | |
239 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
240 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
241 | ||
242 | /* Internal breakpoints class type. */ | |
06edf0c0 | 243 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
244 | |
245 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
246 | static struct breakpoint_ops momentary_breakpoint_ops; |
247 | ||
2060206e PA |
248 | /* The breakpoint_ops structure to be used in regular user created |
249 | breakpoints. */ | |
250 | struct breakpoint_ops bkpt_breakpoint_ops; | |
251 | ||
55aa24fb SDJ |
252 | /* Breakpoints set on probes. */ |
253 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
254 | ||
e7e0cddf | 255 | /* Dynamic printf class type. */ |
c5867ab6 | 256 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 257 | |
d3ce09f5 SS |
258 | /* The style in which to perform a dynamic printf. This is a user |
259 | option because different output options have different tradeoffs; | |
260 | if GDB does the printing, there is better error handling if there | |
261 | is a problem with any of the arguments, but using an inferior | |
262 | function lets you have special-purpose printers and sending of | |
263 | output to the same place as compiled-in print functions. */ | |
264 | ||
265 | static const char dprintf_style_gdb[] = "gdb"; | |
266 | static const char dprintf_style_call[] = "call"; | |
267 | static const char dprintf_style_agent[] = "agent"; | |
268 | static const char *const dprintf_style_enums[] = { | |
269 | dprintf_style_gdb, | |
270 | dprintf_style_call, | |
271 | dprintf_style_agent, | |
272 | NULL | |
273 | }; | |
274 | static const char *dprintf_style = dprintf_style_gdb; | |
275 | ||
276 | /* The function to use for dynamic printf if the preferred style is to | |
277 | call into the inferior. The value is simply a string that is | |
278 | copied into the command, so it can be anything that GDB can | |
279 | evaluate to a callable address, not necessarily a function name. */ | |
280 | ||
bde6261a | 281 | static char *dprintf_function; |
d3ce09f5 SS |
282 | |
283 | /* The channel to use for dynamic printf if the preferred style is to | |
284 | call into the inferior; if a nonempty string, it will be passed to | |
285 | the call as the first argument, with the format string as the | |
286 | second. As with the dprintf function, this can be anything that | |
287 | GDB knows how to evaluate, so in addition to common choices like | |
288 | "stderr", this could be an app-specific expression like | |
289 | "mystreams[curlogger]". */ | |
290 | ||
bde6261a | 291 | static char *dprintf_channel; |
d3ce09f5 SS |
292 | |
293 | /* True if dprintf commands should continue to operate even if GDB | |
294 | has disconnected. */ | |
295 | static int disconnected_dprintf = 1; | |
296 | ||
5cea2a26 PA |
297 | struct command_line * |
298 | breakpoint_commands (struct breakpoint *b) | |
299 | { | |
d1b0a7bf | 300 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 301 | } |
3daf8fe5 | 302 | |
f3b1572e PA |
303 | /* Flag indicating that a command has proceeded the inferior past the |
304 | current breakpoint. */ | |
305 | ||
306 | static int breakpoint_proceeded; | |
307 | ||
956a9fb9 | 308 | const char * |
2cec12e5 AR |
309 | bpdisp_text (enum bpdisp disp) |
310 | { | |
4a64f543 MS |
311 | /* NOTE: the following values are a part of MI protocol and |
312 | represent values of 'disp' field returned when inferior stops at | |
313 | a breakpoint. */ | |
bc043ef3 | 314 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 315 | |
2cec12e5 AR |
316 | return bpdisps[(int) disp]; |
317 | } | |
c906108c | 318 | |
4a64f543 | 319 | /* Prototypes for exported functions. */ |
c906108c | 320 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 321 | if such is available. */ |
c906108c SS |
322 | static int can_use_hw_watchpoints; |
323 | ||
920d2a44 AC |
324 | static void |
325 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
326 | struct cmd_list_element *c, | |
327 | const char *value) | |
328 | { | |
3e43a32a MS |
329 | fprintf_filtered (file, |
330 | _("Debugger's willingness to use " | |
331 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
332 | value); |
333 | } | |
334 | ||
fa8d40ab JJ |
335 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
336 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 337 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
338 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
339 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
340 | static void |
341 | show_pending_break_support (struct ui_file *file, int from_tty, | |
342 | struct cmd_list_element *c, | |
343 | const char *value) | |
344 | { | |
3e43a32a MS |
345 | fprintf_filtered (file, |
346 | _("Debugger's behavior regarding " | |
347 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
348 | value); |
349 | } | |
fa8d40ab | 350 | |
765dc015 | 351 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 352 | set with "break" but falling in read-only memory. |
765dc015 VP |
353 | If 0, gdb will warn about such breakpoints, but won't automatically |
354 | use hardware breakpoints. */ | |
355 | static int automatic_hardware_breakpoints; | |
356 | static void | |
357 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
358 | struct cmd_list_element *c, | |
359 | const char *value) | |
360 | { | |
3e43a32a MS |
361 | fprintf_filtered (file, |
362 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
363 | value); |
364 | } | |
365 | ||
a25a5a45 PA |
366 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
367 | stopped, and immediately inserts any new breakpoints as soon as | |
368 | they're created. If off (default), GDB keeps breakpoints off of | |
369 | the target as long as possible. That is, it delays inserting | |
370 | breakpoints until the next resume, and removes them again when the | |
371 | target fully stops. This is a bit safer in case GDB crashes while | |
372 | processing user input. */ | |
373 | static int always_inserted_mode = 0; | |
72d0e2c5 | 374 | |
33e5cbd6 | 375 | static void |
74960c60 | 376 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 377 | struct cmd_list_element *c, const char *value) |
74960c60 | 378 | { |
a25a5a45 PA |
379 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
380 | value); | |
74960c60 VP |
381 | } |
382 | ||
b57bacec PA |
383 | /* See breakpoint.h. */ |
384 | ||
33e5cbd6 | 385 | int |
a25a5a45 | 386 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 387 | { |
a25a5a45 PA |
388 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
389 | { | |
390 | /* If breakpoints are global, they should be inserted even if no | |
391 | thread under gdb's control is running, or even if there are | |
392 | no threads under GDB's control yet. */ | |
393 | return 1; | |
394 | } | |
395 | else if (target_has_execution) | |
396 | { | |
a25a5a45 PA |
397 | if (always_inserted_mode) |
398 | { | |
399 | /* The user wants breakpoints inserted even if all threads | |
400 | are stopped. */ | |
401 | return 1; | |
402 | } | |
403 | ||
b57bacec PA |
404 | if (threads_are_executing ()) |
405 | return 1; | |
372316f1 PA |
406 | |
407 | /* Don't remove breakpoints yet if, even though all threads are | |
408 | stopped, we still have events to process. */ | |
08036331 | 409 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
410 | if (tp->resumed |
411 | && tp->suspend.waitstatus_pending_p) | |
412 | return 1; | |
a25a5a45 PA |
413 | } |
414 | return 0; | |
33e5cbd6 | 415 | } |
765dc015 | 416 | |
b775012e LM |
417 | static const char condition_evaluation_both[] = "host or target"; |
418 | ||
419 | /* Modes for breakpoint condition evaluation. */ | |
420 | static const char condition_evaluation_auto[] = "auto"; | |
421 | static const char condition_evaluation_host[] = "host"; | |
422 | static const char condition_evaluation_target[] = "target"; | |
423 | static const char *const condition_evaluation_enums[] = { | |
424 | condition_evaluation_auto, | |
425 | condition_evaluation_host, | |
426 | condition_evaluation_target, | |
427 | NULL | |
428 | }; | |
429 | ||
430 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
431 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
432 | ||
433 | /* Global that we use to display information to the user (gets its value from | |
434 | condition_evaluation_mode_1. */ | |
435 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
436 | ||
437 | /* Translate a condition evaluation mode MODE into either "host" | |
438 | or "target". This is used mostly to translate from "auto" to the | |
439 | real setting that is being used. It returns the translated | |
440 | evaluation mode. */ | |
441 | ||
442 | static const char * | |
443 | translate_condition_evaluation_mode (const char *mode) | |
444 | { | |
445 | if (mode == condition_evaluation_auto) | |
446 | { | |
447 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
448 | return condition_evaluation_target; | |
449 | else | |
450 | return condition_evaluation_host; | |
451 | } | |
452 | else | |
453 | return mode; | |
454 | } | |
455 | ||
456 | /* Discovers what condition_evaluation_auto translates to. */ | |
457 | ||
458 | static const char * | |
459 | breakpoint_condition_evaluation_mode (void) | |
460 | { | |
461 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
462 | } | |
463 | ||
464 | /* Return true if GDB should evaluate breakpoint conditions or false | |
465 | otherwise. */ | |
466 | ||
467 | static int | |
468 | gdb_evaluates_breakpoint_condition_p (void) | |
469 | { | |
470 | const char *mode = breakpoint_condition_evaluation_mode (); | |
471 | ||
472 | return (mode == condition_evaluation_host); | |
473 | } | |
474 | ||
c906108c SS |
475 | /* Are we executing breakpoint commands? */ |
476 | static int executing_breakpoint_commands; | |
477 | ||
c02f5703 MS |
478 | /* Are overlay event breakpoints enabled? */ |
479 | static int overlay_events_enabled; | |
480 | ||
e09342b5 TJB |
481 | /* See description in breakpoint.h. */ |
482 | int target_exact_watchpoints = 0; | |
483 | ||
c906108c | 484 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 485 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 486 | current breakpoint. */ |
c906108c | 487 | |
5c44784c | 488 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 489 | |
5c44784c JM |
490 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
491 | for (B = breakpoint_chain; \ | |
492 | B ? (TMP=B->next, 1): 0; \ | |
493 | B = TMP) | |
c906108c | 494 | |
4a64f543 MS |
495 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
496 | not provided so update_global_location_list must not be called | |
497 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 498 | |
876fa593 | 499 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
500 | for (BP_TMP = bp_locations; \ |
501 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 502 | BP_TMP++) |
7cc221ef | 503 | |
b775012e LM |
504 | /* Iterates through locations with address ADDRESS for the currently selected |
505 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
506 | to where the loop should start from. | |
507 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
508 | appropriate location to start with. */ | |
509 | ||
510 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
511 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
512 | BP_LOCP_TMP = BP_LOCP_START; \ | |
513 | BP_LOCP_START \ | |
f5336ca5 | 514 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
515 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
516 | BP_LOCP_TMP++) | |
517 | ||
1042e4c0 SS |
518 | /* Iterator for tracepoints only. */ |
519 | ||
520 | #define ALL_TRACEPOINTS(B) \ | |
521 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 522 | if (is_tracepoint (B)) |
1042e4c0 | 523 | |
7cc221ef | 524 | /* Chains of all breakpoints defined. */ |
c906108c SS |
525 | |
526 | struct breakpoint *breakpoint_chain; | |
527 | ||
f5336ca5 | 528 | /* Array is sorted by bp_locations_compare - primarily by the ADDRESS. */ |
876fa593 | 529 | |
f5336ca5 | 530 | static struct bp_location **bp_locations; |
876fa593 | 531 | |
f5336ca5 | 532 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 533 | |
f5336ca5 | 534 | static unsigned bp_locations_count; |
876fa593 | 535 | |
4a64f543 | 536 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 537 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 538 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 539 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 540 | an address you need to read. */ |
876fa593 | 541 | |
f5336ca5 | 542 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 543 | |
4a64f543 MS |
544 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
545 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
546 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
547 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 548 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 549 | |
f5336ca5 | 550 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 551 | |
4a64f543 | 552 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
553 | from the bp_locations array, but for which a hit may still be |
554 | reported by a target. */ | |
1123588c | 555 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 556 | |
c906108c SS |
557 | /* Number of last breakpoint made. */ |
558 | ||
95a42b64 TT |
559 | static int breakpoint_count; |
560 | ||
86b17b60 PA |
561 | /* The value of `breakpoint_count' before the last command that |
562 | created breakpoints. If the last (break-like) command created more | |
563 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
564 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
565 | static int prev_breakpoint_count; | |
c906108c | 566 | |
1042e4c0 SS |
567 | /* Number of last tracepoint made. */ |
568 | ||
95a42b64 | 569 | static int tracepoint_count; |
1042e4c0 | 570 | |
6149aea9 PA |
571 | static struct cmd_list_element *breakpoint_set_cmdlist; |
572 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 573 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 574 | |
badd37ce SDJ |
575 | /* See declaration at breakpoint.h. */ |
576 | ||
577 | struct breakpoint * | |
578 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
579 | void *user_data) | |
580 | { | |
581 | struct breakpoint *b = NULL; | |
582 | ||
583 | ALL_BREAKPOINTS (b) | |
584 | { | |
585 | if (func (b, user_data) != 0) | |
586 | break; | |
587 | } | |
588 | ||
589 | return b; | |
590 | } | |
591 | ||
468d015d JJ |
592 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
593 | static int | |
594 | breakpoint_enabled (struct breakpoint *b) | |
595 | { | |
0d381245 | 596 | return (b->enable_state == bp_enabled); |
468d015d JJ |
597 | } |
598 | ||
c906108c SS |
599 | /* Set breakpoint count to NUM. */ |
600 | ||
95a42b64 | 601 | static void |
fba45db2 | 602 | set_breakpoint_count (int num) |
c906108c | 603 | { |
86b17b60 | 604 | prev_breakpoint_count = breakpoint_count; |
c906108c | 605 | breakpoint_count = num; |
4fa62494 | 606 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
607 | } |
608 | ||
86b17b60 PA |
609 | /* Used by `start_rbreak_breakpoints' below, to record the current |
610 | breakpoint count before "rbreak" creates any breakpoint. */ | |
611 | static int rbreak_start_breakpoint_count; | |
612 | ||
95a42b64 TT |
613 | /* Called at the start an "rbreak" command to record the first |
614 | breakpoint made. */ | |
86b17b60 | 615 | |
c80049d3 | 616 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 617 | { |
86b17b60 | 618 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
619 | } |
620 | ||
621 | /* Called at the end of an "rbreak" command to record the last | |
622 | breakpoint made. */ | |
86b17b60 | 623 | |
c80049d3 | 624 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 625 | { |
86b17b60 | 626 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
627 | } |
628 | ||
4a64f543 | 629 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
630 | |
631 | void | |
fba45db2 | 632 | clear_breakpoint_hit_counts (void) |
c906108c SS |
633 | { |
634 | struct breakpoint *b; | |
635 | ||
636 | ALL_BREAKPOINTS (b) | |
637 | b->hit_count = 0; | |
638 | } | |
639 | ||
c906108c | 640 | \f |
48cb2d85 VP |
641 | /* Return the breakpoint with the specified number, or NULL |
642 | if the number does not refer to an existing breakpoint. */ | |
643 | ||
644 | struct breakpoint * | |
645 | get_breakpoint (int num) | |
646 | { | |
647 | struct breakpoint *b; | |
648 | ||
649 | ALL_BREAKPOINTS (b) | |
650 | if (b->number == num) | |
651 | return b; | |
652 | ||
653 | return NULL; | |
654 | } | |
5c44784c | 655 | |
c906108c | 656 | \f |
adc36818 | 657 | |
b775012e LM |
658 | /* Mark locations as "conditions have changed" in case the target supports |
659 | evaluating conditions on its side. */ | |
660 | ||
661 | static void | |
662 | mark_breakpoint_modified (struct breakpoint *b) | |
663 | { | |
664 | struct bp_location *loc; | |
665 | ||
666 | /* This is only meaningful if the target is | |
667 | evaluating conditions and if the user has | |
668 | opted for condition evaluation on the target's | |
669 | side. */ | |
670 | if (gdb_evaluates_breakpoint_condition_p () | |
671 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
672 | return; | |
673 | ||
674 | if (!is_breakpoint (b)) | |
675 | return; | |
676 | ||
677 | for (loc = b->loc; loc; loc = loc->next) | |
678 | loc->condition_changed = condition_modified; | |
679 | } | |
680 | ||
681 | /* Mark location as "conditions have changed" in case the target supports | |
682 | evaluating conditions on its side. */ | |
683 | ||
684 | static void | |
685 | mark_breakpoint_location_modified (struct bp_location *loc) | |
686 | { | |
687 | /* This is only meaningful if the target is | |
688 | evaluating conditions and if the user has | |
689 | opted for condition evaluation on the target's | |
690 | side. */ | |
691 | if (gdb_evaluates_breakpoint_condition_p () | |
692 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
693 | ||
694 | return; | |
695 | ||
696 | if (!is_breakpoint (loc->owner)) | |
697 | return; | |
698 | ||
699 | loc->condition_changed = condition_modified; | |
700 | } | |
701 | ||
702 | /* Sets the condition-evaluation mode using the static global | |
703 | condition_evaluation_mode. */ | |
704 | ||
705 | static void | |
eb4c3f4a | 706 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
707 | struct cmd_list_element *c) |
708 | { | |
b775012e LM |
709 | const char *old_mode, *new_mode; |
710 | ||
711 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
712 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
713 | { | |
714 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
715 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
716 | "Using host evaluation mode instead.")); | |
717 | return; | |
718 | } | |
719 | ||
720 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
721 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
722 | ||
abf1152a JK |
723 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
724 | settings was "auto". */ | |
725 | condition_evaluation_mode = condition_evaluation_mode_1; | |
726 | ||
b775012e LM |
727 | /* Only update the mode if the user picked a different one. */ |
728 | if (new_mode != old_mode) | |
729 | { | |
730 | struct bp_location *loc, **loc_tmp; | |
731 | /* If the user switched to a different evaluation mode, we | |
732 | need to synch the changes with the target as follows: | |
733 | ||
734 | "host" -> "target": Send all (valid) conditions to the target. | |
735 | "target" -> "host": Remove all the conditions from the target. | |
736 | */ | |
737 | ||
b775012e LM |
738 | if (new_mode == condition_evaluation_target) |
739 | { | |
740 | /* Mark everything modified and synch conditions with the | |
741 | target. */ | |
742 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
743 | mark_breakpoint_location_modified (loc); | |
744 | } | |
745 | else | |
746 | { | |
747 | /* Manually mark non-duplicate locations to synch conditions | |
748 | with the target. We do this to remove all the conditions the | |
749 | target knows about. */ | |
750 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
751 | if (is_breakpoint (loc->owner) && loc->inserted) | |
752 | loc->needs_update = 1; | |
753 | } | |
754 | ||
755 | /* Do the update. */ | |
44702360 | 756 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
757 | } |
758 | ||
759 | return; | |
760 | } | |
761 | ||
762 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
763 | what "auto" is translating to. */ | |
764 | ||
765 | static void | |
766 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
767 | struct cmd_list_element *c, const char *value) | |
768 | { | |
769 | if (condition_evaluation_mode == condition_evaluation_auto) | |
770 | fprintf_filtered (file, | |
771 | _("Breakpoint condition evaluation " | |
772 | "mode is %s (currently %s).\n"), | |
773 | value, | |
774 | breakpoint_condition_evaluation_mode ()); | |
775 | else | |
776 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
777 | value); | |
778 | } | |
779 | ||
780 | /* A comparison function for bp_location AP and BP that is used by | |
781 | bsearch. This comparison function only cares about addresses, unlike | |
f5336ca5 | 782 | the more general bp_locations_compare function. */ |
b775012e LM |
783 | |
784 | static int | |
f5336ca5 | 785 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 786 | { |
9a3c8263 SM |
787 | const struct bp_location *a = *(const struct bp_location **) ap; |
788 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
789 | |
790 | if (a->address == b->address) | |
791 | return 0; | |
792 | else | |
793 | return ((a->address > b->address) - (a->address < b->address)); | |
794 | } | |
795 | ||
796 | /* Helper function to skip all bp_locations with addresses | |
797 | less than ADDRESS. It returns the first bp_location that | |
798 | is greater than or equal to ADDRESS. If none is found, just | |
799 | return NULL. */ | |
800 | ||
801 | static struct bp_location ** | |
802 | get_first_locp_gte_addr (CORE_ADDR address) | |
803 | { | |
804 | struct bp_location dummy_loc; | |
805 | struct bp_location *dummy_locp = &dummy_loc; | |
806 | struct bp_location **locp_found = NULL; | |
807 | ||
808 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
809 | dummy_loc.address = address; |
810 | ||
811 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 812 | locp_found = ((struct bp_location **) |
f5336ca5 | 813 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 814 | sizeof (struct bp_location **), |
f5336ca5 | 815 | bp_locations_compare_addrs)); |
b775012e LM |
816 | |
817 | /* Nothing was found, nothing left to do. */ | |
818 | if (locp_found == NULL) | |
819 | return NULL; | |
820 | ||
821 | /* We may have found a location that is at ADDRESS but is not the first in the | |
822 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 823 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
824 | && (*(locp_found - 1))->address == address) |
825 | locp_found--; | |
826 | ||
827 | return locp_found; | |
828 | } | |
829 | ||
adc36818 | 830 | void |
7a26bd4d | 831 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
832 | int from_tty) |
833 | { | |
3a5c3e22 PA |
834 | xfree (b->cond_string); |
835 | b->cond_string = NULL; | |
adc36818 | 836 | |
3a5c3e22 | 837 | if (is_watchpoint (b)) |
adc36818 | 838 | { |
3a5c3e22 PA |
839 | struct watchpoint *w = (struct watchpoint *) b; |
840 | ||
4d01a485 | 841 | w->cond_exp.reset (); |
3a5c3e22 PA |
842 | } |
843 | else | |
844 | { | |
845 | struct bp_location *loc; | |
846 | ||
847 | for (loc = b->loc; loc; loc = loc->next) | |
848 | { | |
4d01a485 | 849 | loc->cond.reset (); |
b775012e LM |
850 | |
851 | /* No need to free the condition agent expression | |
852 | bytecode (if we have one). We will handle this | |
853 | when we go through update_global_location_list. */ | |
3a5c3e22 | 854 | } |
adc36818 | 855 | } |
adc36818 PM |
856 | |
857 | if (*exp == 0) | |
858 | { | |
859 | if (from_tty) | |
860 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
861 | } | |
862 | else | |
863 | { | |
bbc13ae3 | 864 | const char *arg = exp; |
cc59ec59 | 865 | |
adc36818 PM |
866 | /* I don't know if it matters whether this is the string the user |
867 | typed in or the decompiled expression. */ | |
868 | b->cond_string = xstrdup (arg); | |
869 | b->condition_not_parsed = 0; | |
870 | ||
871 | if (is_watchpoint (b)) | |
872 | { | |
3a5c3e22 PA |
873 | struct watchpoint *w = (struct watchpoint *) b; |
874 | ||
699bd4cf | 875 | innermost_block_tracker tracker; |
adc36818 | 876 | arg = exp; |
699bd4cf | 877 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
adc36818 PM |
878 | if (*arg) |
879 | error (_("Junk at end of expression")); | |
699bd4cf | 880 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
881 | } |
882 | else | |
883 | { | |
3a5c3e22 PA |
884 | struct bp_location *loc; |
885 | ||
adc36818 PM |
886 | for (loc = b->loc; loc; loc = loc->next) |
887 | { | |
888 | arg = exp; | |
889 | loc->cond = | |
1bb9788d TT |
890 | parse_exp_1 (&arg, loc->address, |
891 | block_for_pc (loc->address), 0); | |
adc36818 PM |
892 | if (*arg) |
893 | error (_("Junk at end of expression")); | |
894 | } | |
895 | } | |
896 | } | |
b775012e LM |
897 | mark_breakpoint_modified (b); |
898 | ||
76727919 | 899 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
900 | } |
901 | ||
d55637df TT |
902 | /* Completion for the "condition" command. */ |
903 | ||
eb3ff9a5 | 904 | static void |
6f937416 | 905 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 906 | completion_tracker &tracker, |
6f937416 | 907 | const char *text, const char *word) |
d55637df | 908 | { |
6f937416 | 909 | const char *space; |
d55637df | 910 | |
f1735a53 TT |
911 | text = skip_spaces (text); |
912 | space = skip_to_space (text); | |
d55637df TT |
913 | if (*space == '\0') |
914 | { | |
915 | int len; | |
916 | struct breakpoint *b; | |
d55637df TT |
917 | |
918 | if (text[0] == '$') | |
919 | { | |
920 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
921 | if (!isdigit (text[1])) |
922 | complete_internalvar (tracker, &text[1]); | |
923 | return; | |
d55637df TT |
924 | } |
925 | ||
926 | /* We're completing the breakpoint number. */ | |
927 | len = strlen (text); | |
928 | ||
929 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
930 | { |
931 | char number[50]; | |
932 | ||
933 | xsnprintf (number, sizeof (number), "%d", b->number); | |
934 | ||
935 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 936 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 937 | } |
d55637df | 938 | |
eb3ff9a5 | 939 | return; |
d55637df TT |
940 | } |
941 | ||
942 | /* We're completing the expression part. */ | |
f1735a53 | 943 | text = skip_spaces (space); |
eb3ff9a5 | 944 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
945 | } |
946 | ||
c906108c SS |
947 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
948 | ||
949 | static void | |
0b39b52e | 950 | condition_command (const char *arg, int from_tty) |
c906108c | 951 | { |
52f0bd74 | 952 | struct breakpoint *b; |
0b39b52e | 953 | const char *p; |
52f0bd74 | 954 | int bnum; |
c906108c SS |
955 | |
956 | if (arg == 0) | |
e2e0b3e5 | 957 | error_no_arg (_("breakpoint number")); |
c906108c SS |
958 | |
959 | p = arg; | |
960 | bnum = get_number (&p); | |
5c44784c | 961 | if (bnum == 0) |
8a3fe4f8 | 962 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
963 | |
964 | ALL_BREAKPOINTS (b) | |
965 | if (b->number == bnum) | |
2f069f6f | 966 | { |
6dddc817 DE |
967 | /* Check if this breakpoint has a "stop" method implemented in an |
968 | extension language. This method and conditions entered into GDB | |
969 | from the CLI are mutually exclusive. */ | |
970 | const struct extension_language_defn *extlang | |
971 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
972 | ||
973 | if (extlang != NULL) | |
974 | { | |
975 | error (_("Only one stop condition allowed. There is currently" | |
976 | " a %s stop condition defined for this breakpoint."), | |
977 | ext_lang_capitalized_name (extlang)); | |
978 | } | |
2566ad2d | 979 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
980 | |
981 | if (is_breakpoint (b)) | |
44702360 | 982 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 983 | |
2f069f6f JB |
984 | return; |
985 | } | |
c906108c | 986 | |
8a3fe4f8 | 987 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
988 | } |
989 | ||
a7bdde9e VP |
990 | /* Check that COMMAND do not contain commands that are suitable |
991 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
992 | Throw if any such commands is found. */ |
993 | ||
a7bdde9e VP |
994 | static void |
995 | check_no_tracepoint_commands (struct command_line *commands) | |
996 | { | |
997 | struct command_line *c; | |
cc59ec59 | 998 | |
a7bdde9e VP |
999 | for (c = commands; c; c = c->next) |
1000 | { | |
a7bdde9e | 1001 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1002 | error (_("The 'while-stepping' command can " |
1003 | "only be used for tracepoints")); | |
a7bdde9e | 1004 | |
12973681 TT |
1005 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1006 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1007 | |
1008 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1009 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1010 | command directly. */ |
1011 | if (strstr (c->line, "collect ") == c->line) | |
1012 | error (_("The 'collect' command can only be used for tracepoints")); | |
1013 | ||
51661e93 VP |
1014 | if (strstr (c->line, "teval ") == c->line) |
1015 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1016 | } |
1017 | } | |
1018 | ||
c1fc2657 | 1019 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1020 | { |
c1fc2657 | 1021 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1022 | }; |
1023 | ||
d77f58be SS |
1024 | /* Encapsulate tests for different types of tracepoints. */ |
1025 | ||
3b0871f4 SM |
1026 | static bool |
1027 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1028 | { |
1029 | return (type == bp_tracepoint | |
1030 | || type == bp_fast_tracepoint | |
1031 | || type == bp_static_tracepoint); | |
1032 | } | |
1033 | ||
3b0871f4 SM |
1034 | static bool |
1035 | is_longjmp_type (bptype type) | |
1036 | { | |
1037 | return type == bp_longjmp || type == bp_exception; | |
1038 | } | |
1039 | ||
a7bdde9e | 1040 | int |
d77f58be | 1041 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1042 | { |
d9b3f62e | 1043 | return is_tracepoint_type (b->type); |
a7bdde9e | 1044 | } |
d9b3f62e | 1045 | |
a5e364af SM |
1046 | /* Factory function to create an appropriate instance of breakpoint given |
1047 | TYPE. */ | |
1048 | ||
1049 | static std::unique_ptr<breakpoint> | |
1050 | new_breakpoint_from_type (bptype type) | |
1051 | { | |
1052 | breakpoint *b; | |
1053 | ||
1054 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1055 | b = new tracepoint (); |
3b0871f4 | 1056 | else if (is_longjmp_type (type)) |
c1fc2657 | 1057 | b = new longjmp_breakpoint (); |
a5e364af SM |
1058 | else |
1059 | b = new breakpoint (); | |
1060 | ||
1061 | return std::unique_ptr<breakpoint> (b); | |
1062 | } | |
1063 | ||
e5dd4106 | 1064 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1065 | breakpoint. This function will throw an exception if a problem is |
1066 | found. */ | |
48cb2d85 | 1067 | |
95a42b64 TT |
1068 | static void |
1069 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1070 | struct command_line *commands) | |
48cb2d85 | 1071 | { |
d77f58be | 1072 | if (is_tracepoint (b)) |
a7bdde9e | 1073 | { |
c9a6ce02 | 1074 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1075 | struct command_line *c; |
1076 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1077 | |
1078 | /* Reset the while-stepping step count. The previous commands | |
1079 | might have included a while-stepping action, while the new | |
1080 | ones might not. */ | |
1081 | t->step_count = 0; | |
1082 | ||
1083 | /* We need to verify that each top-level element of commands is | |
1084 | valid for tracepoints, that there's at most one | |
1085 | while-stepping element, and that the while-stepping's body | |
1086 | has valid tracing commands excluding nested while-stepping. | |
1087 | We also need to validate the tracepoint action line in the | |
1088 | context of the tracepoint --- validate_actionline actually | |
1089 | has side effects, like setting the tracepoint's | |
1090 | while-stepping STEP_COUNT, in addition to checking if the | |
1091 | collect/teval actions parse and make sense in the | |
1092 | tracepoint's context. */ | |
a7bdde9e VP |
1093 | for (c = commands; c; c = c->next) |
1094 | { | |
a7bdde9e VP |
1095 | if (c->control_type == while_stepping_control) |
1096 | { | |
1097 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1098 | error (_("The 'while-stepping' command " |
1099 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1100 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1101 | error (_("The 'while-stepping' command " |
1102 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1103 | |
1104 | if (while_stepping) | |
3e43a32a MS |
1105 | error (_("The 'while-stepping' command " |
1106 | "can be used only once")); | |
a7bdde9e VP |
1107 | else |
1108 | while_stepping = c; | |
1109 | } | |
c9a6ce02 PA |
1110 | |
1111 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1112 | } |
1113 | if (while_stepping) | |
1114 | { | |
1115 | struct command_line *c2; | |
1116 | ||
12973681 TT |
1117 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1118 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1119 | for (; c2; c2 = c2->next) |
1120 | { | |
a7bdde9e VP |
1121 | if (c2->control_type == while_stepping_control) |
1122 | error (_("The 'while-stepping' command cannot be nested")); | |
1123 | } | |
1124 | } | |
1125 | } | |
1126 | else | |
1127 | { | |
1128 | check_no_tracepoint_commands (commands); | |
1129 | } | |
95a42b64 TT |
1130 | } |
1131 | ||
0fb4aa4b PA |
1132 | /* Return a vector of all the static tracepoints set at ADDR. The |
1133 | caller is responsible for releasing the vector. */ | |
1134 | ||
f51e0e20 | 1135 | std::vector<breakpoint *> |
0fb4aa4b PA |
1136 | static_tracepoints_here (CORE_ADDR addr) |
1137 | { | |
1138 | struct breakpoint *b; | |
f51e0e20 | 1139 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1140 | struct bp_location *loc; |
1141 | ||
1142 | ALL_BREAKPOINTS (b) | |
1143 | if (b->type == bp_static_tracepoint) | |
1144 | { | |
1145 | for (loc = b->loc; loc; loc = loc->next) | |
1146 | if (loc->address == addr) | |
f51e0e20 | 1147 | found.push_back (b); |
0fb4aa4b PA |
1148 | } |
1149 | ||
1150 | return found; | |
1151 | } | |
1152 | ||
95a42b64 | 1153 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1154 | validate that only allowed commands are included. */ |
95a42b64 TT |
1155 | |
1156 | void | |
4a64f543 | 1157 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1158 | counted_command_line &&commands) |
95a42b64 | 1159 | { |
93921405 | 1160 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1161 | |
d1b0a7bf | 1162 | b->commands = std::move (commands); |
76727919 | 1163 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1164 | } |
1165 | ||
45a43567 TT |
1166 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1167 | is not the same as the "silent" that may appear in the breakpoint's | |
1168 | commands. */ | |
1169 | ||
1170 | void | |
1171 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1172 | { | |
1173 | int old_silent = b->silent; | |
1174 | ||
1175 | b->silent = silent; | |
1176 | if (old_silent != silent) | |
76727919 | 1177 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1178 | } |
1179 | ||
1180 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1181 | breakpoint work for any thread. */ | |
1182 | ||
1183 | void | |
1184 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1185 | { | |
1186 | int old_thread = b->thread; | |
1187 | ||
1188 | b->thread = thread; | |
1189 | if (old_thread != thread) | |
76727919 | 1190 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1191 | } |
1192 | ||
1193 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1194 | breakpoint work for any task. */ | |
1195 | ||
1196 | void | |
1197 | breakpoint_set_task (struct breakpoint *b, int task) | |
1198 | { | |
1199 | int old_task = b->task; | |
1200 | ||
1201 | b->task = task; | |
1202 | if (old_task != task) | |
76727919 | 1203 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1204 | } |
1205 | ||
95a42b64 | 1206 | static void |
896b6bda | 1207 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1208 | struct command_line *control) |
95a42b64 | 1209 | { |
d1b0a7bf | 1210 | counted_command_line cmd; |
999700cd PW |
1211 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1212 | NULL after the call to read_command_lines if the user provides an empty | |
1213 | list of command by just typing "end". */ | |
1214 | bool cmd_read = false; | |
95a42b64 | 1215 | |
896b6bda PA |
1216 | std::string new_arg; |
1217 | ||
95a42b64 TT |
1218 | if (arg == NULL || !*arg) |
1219 | { | |
86b17b60 | 1220 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1221 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1222 | breakpoint_count); | |
95a42b64 | 1223 | else if (breakpoint_count > 0) |
896b6bda | 1224 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1225 | arg = new_arg.c_str (); |
1226 | } | |
1227 | ||
1228 | map_breakpoint_numbers | |
1229 | (arg, [&] (breakpoint *b) | |
1230 | { | |
999700cd | 1231 | if (!cmd_read) |
48649e1b | 1232 | { |
999700cd | 1233 | gdb_assert (cmd == NULL); |
48649e1b | 1234 | if (control != NULL) |
12973681 | 1235 | cmd = control->body_list_0; |
48649e1b TT |
1236 | else |
1237 | { | |
81b1e71c TT |
1238 | std::string str |
1239 | = string_printf (_("Type commands for breakpoint(s) " | |
1240 | "%s, one per line."), | |
1241 | arg); | |
48649e1b | 1242 | |
60b3cef2 TT |
1243 | auto do_validate = [=] (const char *line) |
1244 | { | |
1245 | validate_actionline (line, b); | |
1246 | }; | |
1247 | gdb::function_view<void (const char *)> validator; | |
1248 | if (is_tracepoint (b)) | |
1249 | validator = do_validate; | |
1250 | ||
1251 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1252 | } |
999700cd | 1253 | cmd_read = true; |
48649e1b TT |
1254 | } |
1255 | ||
1256 | /* If a breakpoint was on the list more than once, we don't need to | |
1257 | do anything. */ | |
1258 | if (b->commands != cmd) | |
1259 | { | |
d1b0a7bf | 1260 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1261 | b->commands = cmd; |
76727919 | 1262 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1263 | } |
1264 | }); | |
95a42b64 TT |
1265 | } |
1266 | ||
1267 | static void | |
0b39b52e | 1268 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1269 | { |
1270 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1271 | } |
40c03ae8 EZ |
1272 | |
1273 | /* Like commands_command, but instead of reading the commands from | |
1274 | input stream, takes them from an already parsed command structure. | |
1275 | ||
1276 | This is used by cli-script.c to DTRT with breakpoint commands | |
1277 | that are part of if and while bodies. */ | |
1278 | enum command_control_type | |
896b6bda | 1279 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1280 | { |
95a42b64 TT |
1281 | commands_command_1 (arg, 0, cmd); |
1282 | return simple_control; | |
40c03ae8 | 1283 | } |
876fa593 JK |
1284 | |
1285 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1286 | ||
1287 | static int | |
1288 | bp_location_has_shadow (struct bp_location *bl) | |
1289 | { | |
1290 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1291 | return 0; | |
1292 | if (!bl->inserted) | |
1293 | return 0; | |
1294 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1295 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1296 | return 0; |
1297 | return 1; | |
1298 | } | |
1299 | ||
9d497a19 PA |
1300 | /* Update BUF, which is LEN bytes read from the target address |
1301 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1302 | contents. | |
1303 | ||
1304 | If READBUF is not NULL, this buffer must not overlap with the of | |
1305 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1306 | failed assertion internal error will be raised. */ | |
1307 | ||
1308 | static void | |
1309 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1310 | const gdb_byte *writebuf_org, | |
1311 | ULONGEST memaddr, LONGEST len, | |
1312 | struct bp_target_info *target_info, | |
1313 | struct gdbarch *gdbarch) | |
1314 | { | |
1315 | /* Now do full processing of the found relevant range of elements. */ | |
1316 | CORE_ADDR bp_addr = 0; | |
1317 | int bp_size = 0; | |
1318 | int bptoffset = 0; | |
1319 | ||
1320 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1321 | current_program_space->aspace, 0)) | |
1322 | { | |
1323 | /* The breakpoint is inserted in a different address space. */ | |
1324 | return; | |
1325 | } | |
1326 | ||
1327 | /* Addresses and length of the part of the breakpoint that | |
1328 | we need to copy. */ | |
1329 | bp_addr = target_info->placed_address; | |
1330 | bp_size = target_info->shadow_len; | |
1331 | ||
1332 | if (bp_addr + bp_size <= memaddr) | |
1333 | { | |
1334 | /* The breakpoint is entirely before the chunk of memory we are | |
1335 | reading. */ | |
1336 | return; | |
1337 | } | |
1338 | ||
1339 | if (bp_addr >= memaddr + len) | |
1340 | { | |
1341 | /* The breakpoint is entirely after the chunk of memory we are | |
1342 | reading. */ | |
1343 | return; | |
1344 | } | |
1345 | ||
1346 | /* Offset within shadow_contents. */ | |
1347 | if (bp_addr < memaddr) | |
1348 | { | |
1349 | /* Only copy the second part of the breakpoint. */ | |
1350 | bp_size -= memaddr - bp_addr; | |
1351 | bptoffset = memaddr - bp_addr; | |
1352 | bp_addr = memaddr; | |
1353 | } | |
1354 | ||
1355 | if (bp_addr + bp_size > memaddr + len) | |
1356 | { | |
1357 | /* Only copy the first part of the breakpoint. */ | |
1358 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1359 | } | |
1360 | ||
1361 | if (readbuf != NULL) | |
1362 | { | |
1363 | /* Verify that the readbuf buffer does not overlap with the | |
1364 | shadow_contents buffer. */ | |
1365 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1366 | || readbuf >= (target_info->shadow_contents | |
1367 | + target_info->shadow_len)); | |
1368 | ||
1369 | /* Update the read buffer with this inserted breakpoint's | |
1370 | shadow. */ | |
1371 | memcpy (readbuf + bp_addr - memaddr, | |
1372 | target_info->shadow_contents + bptoffset, bp_size); | |
1373 | } | |
1374 | else | |
1375 | { | |
1376 | const unsigned char *bp; | |
0d5ed153 MR |
1377 | CORE_ADDR addr = target_info->reqstd_address; |
1378 | int placed_size; | |
9d497a19 PA |
1379 | |
1380 | /* Update the shadow with what we want to write to memory. */ | |
1381 | memcpy (target_info->shadow_contents + bptoffset, | |
1382 | writebuf_org + bp_addr - memaddr, bp_size); | |
1383 | ||
1384 | /* Determine appropriate breakpoint contents and size for this | |
1385 | address. */ | |
0d5ed153 | 1386 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1387 | |
1388 | /* Update the final write buffer with this inserted | |
1389 | breakpoint's INSN. */ | |
1390 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1391 | } | |
1392 | } | |
1393 | ||
8defab1a | 1394 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1395 | by replacing any memory breakpoints with their shadowed contents. |
1396 | ||
35c63cd8 JB |
1397 | If READBUF is not NULL, this buffer must not overlap with any of |
1398 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1399 | a failed assertion internal error will be raised. | |
1400 | ||
876fa593 | 1401 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1402 | bl->address - bp_locations_placed_address_before_address_max |
1403 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1404 | The range we were requested to resolve shadows for is: |
1405 | memaddr ... memaddr + len | |
1406 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1407 | memaddr + len <= (bl->address |
f5336ca5 | 1408 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1409 | and: |
f5336ca5 | 1410 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1411 | |
8defab1a | 1412 | void |
f0ba3972 PA |
1413 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1414 | const gdb_byte *writebuf_org, | |
1415 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1416 | { |
4a64f543 MS |
1417 | /* Left boundary, right boundary and median element of our binary |
1418 | search. */ | |
876fa593 JK |
1419 | unsigned bc_l, bc_r, bc; |
1420 | ||
4a64f543 MS |
1421 | /* Find BC_L which is a leftmost element which may affect BUF |
1422 | content. It is safe to report lower value but a failure to | |
1423 | report higher one. */ | |
876fa593 JK |
1424 | |
1425 | bc_l = 0; | |
f5336ca5 | 1426 | bc_r = bp_locations_count; |
876fa593 JK |
1427 | while (bc_l + 1 < bc_r) |
1428 | { | |
35df4500 | 1429 | struct bp_location *bl; |
876fa593 JK |
1430 | |
1431 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1432 | bl = bp_locations[bc]; |
876fa593 | 1433 | |
4a64f543 MS |
1434 | /* Check first BL->ADDRESS will not overflow due to the added |
1435 | constant. Then advance the left boundary only if we are sure | |
1436 | the BC element can in no way affect the BUF content (MEMADDR | |
1437 | to MEMADDR + LEN range). | |
876fa593 | 1438 | |
f5336ca5 | 1439 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1440 | offset so that we cannot miss a breakpoint with its shadow |
1441 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1442 | |
f5336ca5 | 1443 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1444 | >= bl->address) |
f5336ca5 | 1445 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1446 | <= memaddr)) |
876fa593 JK |
1447 | bc_l = bc; |
1448 | else | |
1449 | bc_r = bc; | |
1450 | } | |
1451 | ||
128070bb PA |
1452 | /* Due to the binary search above, we need to make sure we pick the |
1453 | first location that's at BC_L's address. E.g., if there are | |
1454 | multiple locations at the same address, BC_L may end up pointing | |
1455 | at a duplicate location, and miss the "master"/"inserted" | |
1456 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1457 | B: | |
1458 | ||
1459 | L1@A, L2@A, L3@B, ... | |
1460 | ||
1461 | BC_L could end up pointing at location L2, while the "master" | |
1462 | location could be L1. Since the `loc->inserted' flag is only set | |
1463 | on "master" locations, we'd forget to restore the shadow of L1 | |
1464 | and L2. */ | |
1465 | while (bc_l > 0 | |
f5336ca5 | 1466 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1467 | bc_l--; |
1468 | ||
876fa593 JK |
1469 | /* Now do full processing of the found relevant range of elements. */ |
1470 | ||
f5336ca5 | 1471 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1472 | { |
f5336ca5 | 1473 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1474 | |
35df4500 TJB |
1475 | /* bp_location array has BL->OWNER always non-NULL. */ |
1476 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1477 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1478 | bl->owner->number); |
ffce0d52 | 1479 | |
e5dd4106 | 1480 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1481 | content. */ |
1482 | ||
f5336ca5 PA |
1483 | if (bl->address >= bp_locations_placed_address_before_address_max |
1484 | && memaddr + len <= (bl->address | |
1485 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1486 | break; |
1487 | ||
35df4500 | 1488 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1489 | continue; |
6c95b8df | 1490 | |
9d497a19 PA |
1491 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1492 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1493 | } | |
c906108c | 1494 | } |
9d497a19 | 1495 | |
c906108c | 1496 | \f |
c5aa993b | 1497 | |
b775012e LM |
1498 | /* Return true if BPT is either a software breakpoint or a hardware |
1499 | breakpoint. */ | |
1500 | ||
1501 | int | |
1502 | is_breakpoint (const struct breakpoint *bpt) | |
1503 | { | |
1504 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1505 | || bpt->type == bp_hardware_breakpoint |
1506 | || bpt->type == bp_dprintf); | |
b775012e LM |
1507 | } |
1508 | ||
60e1c644 PA |
1509 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1510 | ||
a5606eee | 1511 | static int |
d77f58be | 1512 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1513 | { |
1514 | return (bpt->type == bp_hardware_watchpoint | |
1515 | || bpt->type == bp_read_watchpoint | |
1516 | || bpt->type == bp_access_watchpoint); | |
1517 | } | |
7270d8f2 | 1518 | |
60e1c644 PA |
1519 | /* Return true if BPT is of any watchpoint kind, hardware or |
1520 | software. */ | |
1521 | ||
3a5c3e22 | 1522 | int |
d77f58be | 1523 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1524 | { |
1525 | return (is_hardware_watchpoint (bpt) | |
1526 | || bpt->type == bp_watchpoint); | |
1527 | } | |
1528 | ||
3a5c3e22 PA |
1529 | /* Returns true if the current thread and its running state are safe |
1530 | to evaluate or update watchpoint B. Watchpoints on local | |
1531 | expressions need to be evaluated in the context of the thread that | |
1532 | was current when the watchpoint was created, and, that thread needs | |
1533 | to be stopped to be able to select the correct frame context. | |
1534 | Watchpoints on global expressions can be evaluated on any thread, | |
1535 | and in any state. It is presently left to the target allowing | |
1536 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1537 | |
1538 | static int | |
3a5c3e22 | 1539 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1540 | { |
c1fc2657 | 1541 | return (b->pspace == current_program_space |
d7e15655 TT |
1542 | && (b->watchpoint_thread == null_ptid |
1543 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1544 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1545 | } |
1546 | ||
d0fb5eae JK |
1547 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1548 | associated bp_watchpoint_scope breakpoint. */ | |
1549 | ||
1550 | static void | |
3a5c3e22 | 1551 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1552 | { |
c1fc2657 | 1553 | if (w->related_breakpoint != w) |
d0fb5eae | 1554 | { |
c1fc2657 SM |
1555 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1556 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1557 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1558 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1559 | w->related_breakpoint = w; | |
d0fb5eae | 1560 | } |
c1fc2657 | 1561 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1562 | } |
1563 | ||
bb9d5f81 PP |
1564 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1565 | watchpoint W. */ | |
1566 | ||
1567 | static struct value * | |
1568 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1569 | { | |
1570 | struct value *bit_val; | |
1571 | ||
1572 | if (val == NULL) | |
1573 | return NULL; | |
1574 | ||
1575 | bit_val = allocate_value (value_type (val)); | |
1576 | ||
1577 | unpack_value_bitfield (bit_val, | |
1578 | w->val_bitpos, | |
1579 | w->val_bitsize, | |
1580 | value_contents_for_printing (val), | |
1581 | value_offset (val), | |
1582 | val); | |
1583 | ||
1584 | return bit_val; | |
1585 | } | |
1586 | ||
c6d81124 PA |
1587 | /* Allocate a dummy location and add it to B, which must be a software |
1588 | watchpoint. This is required because even if a software watchpoint | |
1589 | is not watching any memory, bpstat_stop_status requires a location | |
1590 | to be able to report stops. */ | |
1591 | ||
1592 | static void | |
1593 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1594 | struct program_space *pspace) | |
1595 | { | |
1596 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1597 | ||
1598 | b->loc = allocate_bp_location (b); | |
1599 | b->loc->pspace = pspace; | |
1600 | b->loc->address = -1; | |
1601 | b->loc->length = -1; | |
1602 | } | |
1603 | ||
1604 | /* Returns true if B is a software watchpoint that is not watching any | |
1605 | memory (e.g., "watch $pc"). */ | |
1606 | ||
1607 | static int | |
1608 | is_no_memory_software_watchpoint (struct breakpoint *b) | |
1609 | { | |
1610 | return (b->type == bp_watchpoint | |
1611 | && b->loc != NULL | |
1612 | && b->loc->next == NULL | |
1613 | && b->loc->address == -1 | |
1614 | && b->loc->length == -1); | |
1615 | } | |
1616 | ||
567e1b4e JB |
1617 | /* Assuming that B is a watchpoint: |
1618 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1619 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1620 | - Evaluate the condition if there is one, and store the result |
1621 | in b->loc->cond. | |
a5606eee VP |
1622 | - Update the list of values that must be watched in B->loc. |
1623 | ||
4a64f543 MS |
1624 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1625 | nothing. If this is local watchpoint that is out of scope, delete | |
1626 | it. | |
1627 | ||
1628 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1629 | removed + inserted on each stop here. Normal breakpoints must | |
1630 | never be removed because they might be missed by a running thread | |
1631 | when debugging in non-stop mode. On the other hand, hardware | |
1632 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1633 | to each LWP since they are stored in each LWP's hardware debug | |
1634 | registers. Therefore, such LWP must be stopped first in order to | |
1635 | be able to modify its hardware watchpoints. | |
1636 | ||
1637 | Hardware watchpoints must be reset exactly once after being | |
1638 | presented to the user. It cannot be done sooner, because it would | |
1639 | reset the data used to present the watchpoint hit to the user. And | |
1640 | it must not be done later because it could display the same single | |
1641 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1642 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1643 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1644 | not user-visible - its hit is suppressed if the memory content has | |
1645 | not changed. | |
1646 | ||
1647 | The following constraints influence the location where we can reset | |
1648 | hardware watchpoints: | |
1649 | ||
1650 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1651 | called several times when GDB stops. | |
1652 | ||
1653 | [linux] | |
1654 | * Multiple hardware watchpoints can be hit at the same time, | |
1655 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1656 | hit at a time as the reason for stopping, and all the other hits | |
1657 | are presented later, one after the other, each time the user | |
1658 | requests the execution to be resumed. Execution is not resumed | |
1659 | for the threads still having pending hit event stored in | |
1660 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1661 | the inferior on the first stop the thread hit event is kept being | |
1662 | reported from its cached value by linux_nat_stopped_data_address | |
1663 | until the real thread resume happens after the watchpoint gets | |
1664 | presented and thus its LWP_INFO->STATUS gets reset. | |
1665 | ||
1666 | Therefore the hardware watchpoint hit can get safely reset on the | |
1667 | watchpoint removal from inferior. */ | |
a79d3c27 | 1668 | |
b40ce68a | 1669 | static void |
3a5c3e22 | 1670 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1671 | { |
a5606eee | 1672 | int within_current_scope; |
a5606eee | 1673 | struct frame_id saved_frame_id; |
66076460 | 1674 | int frame_saved; |
a5606eee | 1675 | |
f6bc2008 PA |
1676 | /* If this is a local watchpoint, we only want to check if the |
1677 | watchpoint frame is in scope if the current thread is the thread | |
1678 | that was used to create the watchpoint. */ | |
1679 | if (!watchpoint_in_thread_scope (b)) | |
1680 | return; | |
1681 | ||
c1fc2657 | 1682 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1683 | return; |
1684 | ||
66076460 | 1685 | frame_saved = 0; |
a5606eee VP |
1686 | |
1687 | /* Determine if the watchpoint is within scope. */ | |
1688 | if (b->exp_valid_block == NULL) | |
1689 | within_current_scope = 1; | |
1690 | else | |
1691 | { | |
b5db5dfc UW |
1692 | struct frame_info *fi = get_current_frame (); |
1693 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1694 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1695 | ||
c9cf6e20 MG |
1696 | /* If we're at a point where the stack has been destroyed |
1697 | (e.g. in a function epilogue), unwinding may not work | |
1698 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1699 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1700 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1701 | return; |
66076460 DJ |
1702 | |
1703 | /* Save the current frame's ID so we can restore it after | |
1704 | evaluating the watchpoint expression on its own frame. */ | |
1705 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1706 | took a frame parameter, so that we didn't have to change the | |
1707 | selected frame. */ | |
1708 | frame_saved = 1; | |
1709 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1710 | ||
a5606eee VP |
1711 | fi = frame_find_by_id (b->watchpoint_frame); |
1712 | within_current_scope = (fi != NULL); | |
1713 | if (within_current_scope) | |
1714 | select_frame (fi); | |
1715 | } | |
1716 | ||
b5db5dfc UW |
1717 | /* We don't free locations. They are stored in the bp_location array |
1718 | and update_global_location_list will eventually delete them and | |
1719 | remove breakpoints if needed. */ | |
c1fc2657 | 1720 | b->loc = NULL; |
b5db5dfc | 1721 | |
a5606eee VP |
1722 | if (within_current_scope && reparse) |
1723 | { | |
bbc13ae3 | 1724 | const char *s; |
d63d0675 | 1725 | |
4d01a485 | 1726 | b->exp.reset (); |
d63d0675 | 1727 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1728 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1729 | /* If the meaning of expression itself changed, the old value is |
1730 | no longer relevant. We don't want to report a watchpoint hit | |
1731 | to the user when the old value and the new value may actually | |
1732 | be completely different objects. */ | |
fa4727a6 DJ |
1733 | b->val = NULL; |
1734 | b->val_valid = 0; | |
60e1c644 PA |
1735 | |
1736 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1737 | expression is stored in the breakpoint object, not in the | |
1738 | locations (re)created below. */ | |
c1fc2657 | 1739 | if (b->cond_string != NULL) |
60e1c644 | 1740 | { |
4d01a485 | 1741 | b->cond_exp.reset (); |
60e1c644 | 1742 | |
c1fc2657 | 1743 | s = b->cond_string; |
1bb9788d | 1744 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1745 | } |
a5606eee | 1746 | } |
a5606eee VP |
1747 | |
1748 | /* If we failed to parse the expression, for example because | |
1749 | it refers to a global variable in a not-yet-loaded shared library, | |
1750 | don't try to insert watchpoint. We don't automatically delete | |
1751 | such watchpoint, though, since failure to parse expression | |
1752 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1753 | if (!target_has_execution) |
2d134ed3 PA |
1754 | { |
1755 | /* Without execution, memory can't change. No use to try and | |
1756 | set watchpoint locations. The watchpoint will be reset when | |
1757 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1758 | if (!can_use_hw_watchpoints) |
1759 | { | |
c1fc2657 SM |
1760 | if (b->ops->works_in_software_mode (b)) |
1761 | b->type = bp_watchpoint; | |
e8369a73 | 1762 | else |
638aa5a1 AB |
1763 | error (_("Can't set read/access watchpoint when " |
1764 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1765 | } |
2d134ed3 PA |
1766 | } |
1767 | else if (within_current_scope && b->exp) | |
a5606eee | 1768 | { |
0cf6dd15 | 1769 | int pc = 0; |
a6535de1 | 1770 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1771 | struct value *v, *result; |
2d134ed3 | 1772 | struct program_space *frame_pspace; |
a5606eee | 1773 | |
4d01a485 | 1774 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1775 | |
a5606eee VP |
1776 | /* Avoid setting b->val if it's already set. The meaning of |
1777 | b->val is 'the last value' user saw, and we should update | |
1778 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1779 | happens, the code that reports it updates b->val directly. |
1780 | We don't keep track of the memory value for masked | |
1781 | watchpoints. */ | |
c1fc2657 | 1782 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1783 | { |
bb9d5f81 | 1784 | if (b->val_bitsize != 0) |
850645cf TT |
1785 | v = extract_bitfield_from_watchpoint_value (b, v); |
1786 | b->val = release_value (v); | |
fa4727a6 DJ |
1787 | b->val_valid = 1; |
1788 | } | |
a5606eee | 1789 | |
2d134ed3 PA |
1790 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1791 | ||
a5606eee | 1792 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1793 | gdb_assert (!val_chain.empty ()); |
1794 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1795 | { |
a6535de1 TT |
1796 | v = iter.get (); |
1797 | ||
a5606eee VP |
1798 | /* If it's a memory location, and GDB actually needed |
1799 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1800 | must watch it. If the first value returned is |
1801 | still lazy, that means an error occurred reading it; | |
1802 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1803 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1804 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1805 | { |
1806 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1807 | |
a5606eee VP |
1808 | /* We only watch structs and arrays if user asked |
1809 | for it explicitly, never if they just happen to | |
1810 | appear in the middle of some value chain. */ | |
fa4727a6 | 1811 | if (v == result |
a5606eee VP |
1812 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1813 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1814 | { | |
1815 | CORE_ADDR addr; | |
f486487f | 1816 | enum target_hw_bp_type type; |
a5606eee | 1817 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1818 | int bitpos = 0, bitsize = 0; |
1819 | ||
1820 | if (value_bitsize (v) != 0) | |
1821 | { | |
1822 | /* Extract the bit parameters out from the bitfield | |
1823 | sub-expression. */ | |
1824 | bitpos = value_bitpos (v); | |
1825 | bitsize = value_bitsize (v); | |
1826 | } | |
1827 | else if (v == result && b->val_bitsize != 0) | |
1828 | { | |
1829 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1830 | lvalue whose bit parameters are saved in the fields | |
1831 | VAL_BITPOS and VAL_BITSIZE. */ | |
1832 | bitpos = b->val_bitpos; | |
1833 | bitsize = b->val_bitsize; | |
1834 | } | |
a5606eee | 1835 | |
42ae5230 | 1836 | addr = value_address (v); |
bb9d5f81 PP |
1837 | if (bitsize != 0) |
1838 | { | |
1839 | /* Skip the bytes that don't contain the bitfield. */ | |
1840 | addr += bitpos / 8; | |
1841 | } | |
1842 | ||
a5606eee | 1843 | type = hw_write; |
c1fc2657 | 1844 | if (b->type == bp_read_watchpoint) |
a5606eee | 1845 | type = hw_read; |
c1fc2657 | 1846 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1847 | type = hw_access; |
3a5c3e22 | 1848 | |
c1fc2657 SM |
1849 | loc = allocate_bp_location (b); |
1850 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1851 | ; |
1852 | *tmp = loc; | |
a6d9a66e | 1853 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1854 | |
1855 | loc->pspace = frame_pspace; | |
f17d9474 | 1856 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1857 | |
1858 | if (bitsize != 0) | |
1859 | { | |
1860 | /* Just cover the bytes that make up the bitfield. */ | |
1861 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1862 | } | |
1863 | else | |
1864 | loc->length = TYPE_LENGTH (value_type (v)); | |
1865 | ||
a5606eee VP |
1866 | loc->watchpoint_type = type; |
1867 | } | |
1868 | } | |
9fa40276 TJB |
1869 | } |
1870 | ||
1871 | /* Change the type of breakpoint between hardware assisted or | |
1872 | an ordinary watchpoint depending on the hardware support | |
1873 | and free hardware slots. REPARSE is set when the inferior | |
1874 | is started. */ | |
a9634178 | 1875 | if (reparse) |
9fa40276 | 1876 | { |
e09342b5 | 1877 | int reg_cnt; |
9fa40276 TJB |
1878 | enum bp_loc_type loc_type; |
1879 | struct bp_location *bl; | |
a5606eee | 1880 | |
a9634178 | 1881 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1882 | |
1883 | if (reg_cnt) | |
9fa40276 TJB |
1884 | { |
1885 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1886 | enum bptype type; |
9fa40276 | 1887 | |
a9634178 TJB |
1888 | /* Use an exact watchpoint when there's only one memory region to be |
1889 | watched, and only one debug register is needed to watch it. */ | |
1890 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1891 | ||
9fa40276 | 1892 | /* We need to determine how many resources are already |
e09342b5 TJB |
1893 | used for all other hardware watchpoints plus this one |
1894 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1895 | this watchpoint in as well. */ |
1896 | ||
1897 | /* If this is a software watchpoint, we try to turn it | |
1898 | to a hardware one -- count resources as if B was of | |
1899 | hardware watchpoint type. */ | |
c1fc2657 | 1900 | type = b->type; |
a1398e0c PA |
1901 | if (type == bp_watchpoint) |
1902 | type = bp_hardware_watchpoint; | |
1903 | ||
1904 | /* This watchpoint may or may not have been placed on | |
1905 | the list yet at this point (it won't be in the list | |
1906 | if we're trying to create it for the first time, | |
1907 | through watch_command), so always account for it | |
1908 | manually. */ | |
1909 | ||
1910 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1911 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1912 | |
1913 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1914 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1915 | |
1916 | target_resources_ok | |
1917 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1918 | if (target_resources_ok <= 0) |
a9634178 | 1919 | { |
c1fc2657 | 1920 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1921 | |
1922 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1923 | error (_("Target does not support this type of " |
1924 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1925 | else if (target_resources_ok < 0 && !sw_mode) |
1926 | error (_("There are not enough available hardware " | |
1927 | "resources for this watchpoint.")); | |
a1398e0c PA |
1928 | |
1929 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1930 | b->type = bp_watchpoint; |
a1398e0c PA |
1931 | } |
1932 | else | |
1933 | { | |
1934 | /* If this was a software watchpoint, we've just | |
1935 | found we have enough resources to turn it to a | |
1936 | hardware watchpoint. Otherwise, this is a | |
1937 | nop. */ | |
c1fc2657 | 1938 | b->type = type; |
a9634178 | 1939 | } |
9fa40276 | 1940 | } |
c1fc2657 | 1941 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1942 | { |
1943 | if (!can_use_hw_watchpoints) | |
1944 | error (_("Can't set read/access watchpoint when " | |
1945 | "hardware watchpoints are disabled.")); | |
1946 | else | |
1947 | error (_("Expression cannot be implemented with " | |
1948 | "read/access watchpoint.")); | |
1949 | } | |
9fa40276 | 1950 | else |
c1fc2657 | 1951 | b->type = bp_watchpoint; |
9fa40276 | 1952 | |
c1fc2657 | 1953 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1954 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1955 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1956 | bl->loc_type = loc_type; |
1957 | } | |
1958 | ||
c7437ca6 PA |
1959 | /* If a software watchpoint is not watching any memory, then the |
1960 | above left it without any location set up. But, | |
1961 | bpstat_stop_status requires a location to be able to report | |
1962 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1963 | if (b->type == bp_watchpoint && b->loc == NULL) |
1964 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1965 | } |
1966 | else if (!within_current_scope) | |
7270d8f2 | 1967 | { |
ac74f770 MS |
1968 | printf_filtered (_("\ |
1969 | Watchpoint %d deleted because the program has left the block\n\ | |
1970 | in which its expression is valid.\n"), | |
c1fc2657 | 1971 | b->number); |
d0fb5eae | 1972 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1973 | } |
a5606eee VP |
1974 | |
1975 | /* Restore the selected frame. */ | |
66076460 DJ |
1976 | if (frame_saved) |
1977 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1978 | } |
1979 | ||
a5606eee | 1980 | |
74960c60 | 1981 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1982 | inserted in the inferior. We don't differentiate the type of BL's owner |
1983 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1984 | breakpoint_ops is not defined, because in insert_bp_location, | |
1985 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1986 | static int |
35df4500 | 1987 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1988 | { |
35df4500 | 1989 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1990 | return 0; |
1991 | ||
35df4500 | 1992 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1993 | return 0; |
1994 | ||
35df4500 | 1995 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1996 | return 0; |
1997 | ||
f8eba3c6 TT |
1998 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
1999 | return 0; | |
2000 | ||
56710373 PA |
2001 | /* This is set for example, when we're attached to the parent of a |
2002 | vfork, and have detached from the child. The child is running | |
2003 | free, and we expect it to do an exec or exit, at which point the | |
2004 | OS makes the parent schedulable again (and the target reports | |
2005 | that the vfork is done). Until the child is done with the shared | |
2006 | memory region, do not insert breakpoints in the parent, otherwise | |
2007 | the child could still trip on the parent's breakpoints. Since | |
2008 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2009 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2010 | return 0; |
2011 | ||
31e77af2 | 2012 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2013 | location, except if the breakpoint is a single-step breakpoint, |
2014 | and the breakpoint's thread is the thread which is stepping past | |
2015 | a breakpoint. */ | |
31e77af2 PA |
2016 | if ((bl->loc_type == bp_loc_software_breakpoint |
2017 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2018 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2019 | bl->address) |
2020 | /* The single-step breakpoint may be inserted at the location | |
2021 | we're trying to step if the instruction branches to itself. | |
2022 | However, the instruction won't be executed at all and it may | |
2023 | break the semantics of the instruction, for example, the | |
2024 | instruction is a conditional branch or updates some flags. | |
2025 | We can't fix it unless GDB is able to emulate the instruction | |
2026 | or switch to displaced stepping. */ | |
2027 | && !(bl->owner->type == bp_single_step | |
2028 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2029 | { |
2030 | if (debug_infrun) | |
2031 | { | |
2032 | fprintf_unfiltered (gdb_stdlog, | |
2033 | "infrun: skipping breakpoint: " | |
2034 | "stepping past insn at: %s\n", | |
2035 | paddress (bl->gdbarch, bl->address)); | |
2036 | } | |
2037 | return 0; | |
2038 | } | |
31e77af2 | 2039 | |
963f9c80 PA |
2040 | /* Don't insert watchpoints if we're trying to step past the |
2041 | instruction that triggered one. */ | |
2042 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2043 | && stepping_past_nonsteppable_watchpoint ()) | |
2044 | { | |
2045 | if (debug_infrun) | |
2046 | { | |
2047 | fprintf_unfiltered (gdb_stdlog, | |
2048 | "infrun: stepping past non-steppable watchpoint. " | |
2049 | "skipping watchpoint at %s:%d\n", | |
2050 | paddress (bl->gdbarch, bl->address), | |
2051 | bl->length); | |
2052 | } | |
2053 | return 0; | |
2054 | } | |
2055 | ||
74960c60 VP |
2056 | return 1; |
2057 | } | |
2058 | ||
934709f0 PW |
2059 | /* Same as should_be_inserted but does the check assuming |
2060 | that the location is not duplicated. */ | |
2061 | ||
2062 | static int | |
2063 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2064 | { | |
2065 | int result; | |
2066 | const int save_duplicate = bl->duplicate; | |
2067 | ||
2068 | bl->duplicate = 0; | |
2069 | result = should_be_inserted (bl); | |
2070 | bl->duplicate = save_duplicate; | |
2071 | return result; | |
2072 | } | |
2073 | ||
b775012e LM |
2074 | /* Parses a conditional described by an expression COND into an |
2075 | agent expression bytecode suitable for evaluation | |
2076 | by the bytecode interpreter. Return NULL if there was | |
2077 | any error during parsing. */ | |
2078 | ||
833177a4 | 2079 | static agent_expr_up |
b775012e LM |
2080 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2081 | { | |
833177a4 | 2082 | if (cond == NULL) |
b775012e LM |
2083 | return NULL; |
2084 | ||
833177a4 PA |
2085 | agent_expr_up aexpr; |
2086 | ||
b775012e LM |
2087 | /* We don't want to stop processing, so catch any errors |
2088 | that may show up. */ | |
a70b8144 | 2089 | try |
b775012e | 2090 | { |
036e657b | 2091 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2092 | } |
2093 | ||
230d2906 | 2094 | catch (const gdb_exception_error &ex) |
b775012e LM |
2095 | { |
2096 | /* If we got here, it means the condition could not be parsed to a valid | |
2097 | bytecode expression and thus can't be evaluated on the target's side. | |
2098 | It's no use iterating through the conditions. */ | |
b775012e LM |
2099 | } |
2100 | ||
2101 | /* We have a valid agent expression. */ | |
2102 | return aexpr; | |
2103 | } | |
2104 | ||
2105 | /* Based on location BL, create a list of breakpoint conditions to be | |
2106 | passed on to the target. If we have duplicated locations with different | |
2107 | conditions, we will add such conditions to the list. The idea is that the | |
2108 | target will evaluate the list of conditions and will only notify GDB when | |
2109 | one of them is true. */ | |
2110 | ||
2111 | static void | |
2112 | build_target_condition_list (struct bp_location *bl) | |
2113 | { | |
2114 | struct bp_location **locp = NULL, **loc2p; | |
2115 | int null_condition_or_parse_error = 0; | |
2116 | int modified = bl->needs_update; | |
2117 | struct bp_location *loc; | |
2118 | ||
8b4f3082 | 2119 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2120 | bl->target_info.conditions.clear (); |
8b4f3082 | 2121 | |
b775012e LM |
2122 | /* This is only meaningful if the target is |
2123 | evaluating conditions and if the user has | |
2124 | opted for condition evaluation on the target's | |
2125 | side. */ | |
2126 | if (gdb_evaluates_breakpoint_condition_p () | |
2127 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2128 | return; | |
2129 | ||
2130 | /* Do a first pass to check for locations with no assigned | |
2131 | conditions or conditions that fail to parse to a valid agent expression | |
2132 | bytecode. If any of these happen, then it's no use to send conditions | |
2133 | to the target since this location will always trigger and generate a | |
2134 | response back to GDB. */ | |
2135 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2136 | { | |
2137 | loc = (*loc2p); | |
2138 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2139 | { | |
2140 | if (modified) | |
2141 | { | |
b775012e LM |
2142 | /* Re-parse the conditions since something changed. In that |
2143 | case we already freed the condition bytecodes (see | |
2144 | force_breakpoint_reinsertion). We just | |
2145 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2146 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2147 | loc->cond.get ()); | |
b775012e LM |
2148 | } |
2149 | ||
2150 | /* If we have a NULL bytecode expression, it means something | |
2151 | went wrong or we have a null condition expression. */ | |
2152 | if (!loc->cond_bytecode) | |
2153 | { | |
2154 | null_condition_or_parse_error = 1; | |
2155 | break; | |
2156 | } | |
2157 | } | |
2158 | } | |
2159 | ||
2160 | /* If any of these happened, it means we will have to evaluate the conditions | |
2161 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2162 | for all the other duplicate locations, thus we free all of them here. | |
2163 | ||
2164 | This is so we have a finer control over which locations' conditions are | |
2165 | being evaluated by GDB or the remote stub. */ | |
2166 | if (null_condition_or_parse_error) | |
2167 | { | |
2168 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2169 | { | |
2170 | loc = (*loc2p); | |
2171 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2172 | { | |
2173 | /* Only go as far as the first NULL bytecode is | |
2174 | located. */ | |
2175 | if (!loc->cond_bytecode) | |
2176 | return; | |
2177 | ||
833177a4 | 2178 | loc->cond_bytecode.reset (); |
b775012e LM |
2179 | } |
2180 | } | |
2181 | } | |
2182 | ||
2183 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2184 | for this location's address. */ | |
2185 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2186 | { | |
2187 | loc = (*loc2p); | |
2188 | if (loc->cond | |
2189 | && is_breakpoint (loc->owner) | |
2190 | && loc->pspace->num == bl->pspace->num | |
2191 | && loc->owner->enable_state == bp_enabled | |
2192 | && loc->enabled) | |
3cde5c42 PA |
2193 | { |
2194 | /* Add the condition to the vector. This will be used later | |
2195 | to send the conditions to the target. */ | |
2196 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2197 | } | |
b775012e LM |
2198 | } |
2199 | ||
2200 | return; | |
2201 | } | |
2202 | ||
d3ce09f5 SS |
2203 | /* Parses a command described by string CMD into an agent expression |
2204 | bytecode suitable for evaluation by the bytecode interpreter. | |
2205 | Return NULL if there was any error during parsing. */ | |
2206 | ||
833177a4 | 2207 | static agent_expr_up |
d3ce09f5 SS |
2208 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2209 | { | |
bbc13ae3 KS |
2210 | const char *cmdrest; |
2211 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2212 | struct gdbarch *gdbarch = get_current_arch (); |
2213 | ||
833177a4 | 2214 | if (cmd == NULL) |
d3ce09f5 SS |
2215 | return NULL; |
2216 | ||
2217 | cmdrest = cmd; | |
2218 | ||
2219 | if (*cmdrest == ',') | |
2220 | ++cmdrest; | |
f1735a53 | 2221 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2222 | |
2223 | if (*cmdrest++ != '"') | |
2224 | error (_("No format string following the location")); | |
2225 | ||
2226 | format_start = cmdrest; | |
2227 | ||
8e481c3b | 2228 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2229 | |
2230 | format_end = cmdrest; | |
2231 | ||
2232 | if (*cmdrest++ != '"') | |
2233 | error (_("Bad format string, non-terminated '\"'.")); | |
2234 | ||
f1735a53 | 2235 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2236 | |
2237 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2238 | error (_("Invalid argument syntax")); | |
2239 | ||
2240 | if (*cmdrest == ',') | |
2241 | cmdrest++; | |
f1735a53 | 2242 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2243 | |
2244 | /* For each argument, make an expression. */ | |
2245 | ||
8e481c3b | 2246 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2247 | while (*cmdrest != '\0') |
2248 | { | |
bbc13ae3 | 2249 | const char *cmd1; |
d3ce09f5 SS |
2250 | |
2251 | cmd1 = cmdrest; | |
4d01a485 | 2252 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2253 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2254 | cmdrest = cmd1; |
2255 | if (*cmdrest == ',') | |
2256 | ++cmdrest; | |
2257 | } | |
2258 | ||
833177a4 PA |
2259 | agent_expr_up aexpr; |
2260 | ||
d3ce09f5 SS |
2261 | /* We don't want to stop processing, so catch any errors |
2262 | that may show up. */ | |
a70b8144 | 2263 | try |
d3ce09f5 | 2264 | { |
036e657b JB |
2265 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2266 | format_start, format_end - format_start, | |
8e481c3b | 2267 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2268 | } |
230d2906 | 2269 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2270 | { |
2271 | /* If we got here, it means the command could not be parsed to a valid | |
2272 | bytecode expression and thus can't be evaluated on the target's side. | |
2273 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2274 | } |
492d29ea | 2275 | |
d3ce09f5 SS |
2276 | /* We have a valid agent expression, return it. */ |
2277 | return aexpr; | |
2278 | } | |
2279 | ||
2280 | /* Based on location BL, create a list of breakpoint commands to be | |
2281 | passed on to the target. If we have duplicated locations with | |
2282 | different commands, we will add any such to the list. */ | |
2283 | ||
2284 | static void | |
2285 | build_target_command_list (struct bp_location *bl) | |
2286 | { | |
2287 | struct bp_location **locp = NULL, **loc2p; | |
2288 | int null_command_or_parse_error = 0; | |
2289 | int modified = bl->needs_update; | |
2290 | struct bp_location *loc; | |
2291 | ||
3cde5c42 PA |
2292 | /* Clear commands left over from a previous insert. */ |
2293 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2294 | |
41fac0cf | 2295 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2296 | return; |
2297 | ||
41fac0cf PA |
2298 | /* For now, limit to agent-style dprintf breakpoints. */ |
2299 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2300 | return; |
2301 | ||
41fac0cf PA |
2302 | /* For now, if we have any duplicate location that isn't a dprintf, |
2303 | don't install the target-side commands, as that would make the | |
2304 | breakpoint not be reported to the core, and we'd lose | |
2305 | control. */ | |
2306 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2307 | { | |
2308 | loc = (*loc2p); | |
2309 | if (is_breakpoint (loc->owner) | |
2310 | && loc->pspace->num == bl->pspace->num | |
2311 | && loc->owner->type != bp_dprintf) | |
2312 | return; | |
2313 | } | |
2314 | ||
d3ce09f5 SS |
2315 | /* Do a first pass to check for locations with no assigned |
2316 | conditions or conditions that fail to parse to a valid agent expression | |
2317 | bytecode. If any of these happen, then it's no use to send conditions | |
2318 | to the target since this location will always trigger and generate a | |
2319 | response back to GDB. */ | |
2320 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2321 | { | |
2322 | loc = (*loc2p); | |
2323 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2324 | { | |
2325 | if (modified) | |
2326 | { | |
d3ce09f5 SS |
2327 | /* Re-parse the commands since something changed. In that |
2328 | case we already freed the command bytecodes (see | |
2329 | force_breakpoint_reinsertion). We just | |
2330 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2331 | loc->cmd_bytecode |
2332 | = parse_cmd_to_aexpr (bl->address, | |
2333 | loc->owner->extra_string); | |
d3ce09f5 SS |
2334 | } |
2335 | ||
2336 | /* If we have a NULL bytecode expression, it means something | |
2337 | went wrong or we have a null command expression. */ | |
2338 | if (!loc->cmd_bytecode) | |
2339 | { | |
2340 | null_command_or_parse_error = 1; | |
2341 | break; | |
2342 | } | |
2343 | } | |
2344 | } | |
2345 | ||
2346 | /* If anything failed, then we're not doing target-side commands, | |
2347 | and so clean up. */ | |
2348 | if (null_command_or_parse_error) | |
2349 | { | |
2350 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2351 | { | |
2352 | loc = (*loc2p); | |
2353 | if (is_breakpoint (loc->owner) | |
2354 | && loc->pspace->num == bl->pspace->num) | |
2355 | { | |
2356 | /* Only go as far as the first NULL bytecode is | |
2357 | located. */ | |
40fb6c5e | 2358 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2359 | return; |
2360 | ||
833177a4 | 2361 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2362 | } |
2363 | } | |
2364 | } | |
2365 | ||
2366 | /* No NULL commands or failed bytecode generation. Build a command list | |
2367 | for this location's address. */ | |
2368 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2369 | { | |
2370 | loc = (*loc2p); | |
2371 | if (loc->owner->extra_string | |
2372 | && is_breakpoint (loc->owner) | |
2373 | && loc->pspace->num == bl->pspace->num | |
2374 | && loc->owner->enable_state == bp_enabled | |
2375 | && loc->enabled) | |
3cde5c42 PA |
2376 | { |
2377 | /* Add the command to the vector. This will be used later | |
2378 | to send the commands to the target. */ | |
2379 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2380 | } | |
d3ce09f5 SS |
2381 | } |
2382 | ||
2383 | bl->target_info.persist = 0; | |
2384 | /* Maybe flag this location as persistent. */ | |
2385 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2386 | bl->target_info.persist = 1; | |
2387 | } | |
2388 | ||
833b7ab5 YQ |
2389 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2390 | of breakpoint according to ADDR except single-step breakpoint. | |
2391 | Get the kind of single-step breakpoint according to the current | |
2392 | registers state. */ | |
cd6c3b4f YQ |
2393 | |
2394 | static int | |
2395 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2396 | { | |
833b7ab5 YQ |
2397 | if (bl->owner->type == bp_single_step) |
2398 | { | |
2399 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2400 | struct regcache *regcache; | |
2401 | ||
00431a78 | 2402 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2403 | |
2404 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2405 | regcache, addr); | |
2406 | } | |
2407 | else | |
2408 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2409 | } |
2410 | ||
35df4500 TJB |
2411 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2412 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2413 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2414 | Returns 0 for success, 1 if the bp_location type is not supported or |
2415 | -1 for failure. | |
879bfdc2 | 2416 | |
4a64f543 MS |
2417 | NOTE drow/2003-09-09: This routine could be broken down to an |
2418 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2419 | static int |
35df4500 | 2420 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2421 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2422 | int *disabled_breaks, |
dd61ec5c MW |
2423 | int *hw_breakpoint_error, |
2424 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2425 | { |
cc06b668 | 2426 | gdb_exception bp_excpt; |
879bfdc2 | 2427 | |
b775012e | 2428 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2429 | return 0; |
2430 | ||
35c63cd8 JB |
2431 | /* Note we don't initialize bl->target_info, as that wipes out |
2432 | the breakpoint location's shadow_contents if the breakpoint | |
2433 | is still inserted at that location. This in turn breaks | |
2434 | target_read_memory which depends on these buffers when | |
2435 | a memory read is requested at the breakpoint location: | |
2436 | Once the target_info has been wiped, we fail to see that | |
2437 | we have a breakpoint inserted at that address and thus | |
2438 | read the breakpoint instead of returning the data saved in | |
2439 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2440 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2441 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2442 | bl->target_info.length = bl->length; |
8181d85f | 2443 | |
b775012e LM |
2444 | /* When working with target-side conditions, we must pass all the conditions |
2445 | for the same breakpoint address down to the target since GDB will not | |
2446 | insert those locations. With a list of breakpoint conditions, the target | |
2447 | can decide when to stop and notify GDB. */ | |
2448 | ||
2449 | if (is_breakpoint (bl->owner)) | |
2450 | { | |
2451 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2452 | build_target_command_list (bl); |
2453 | /* Reset the modification marker. */ | |
b775012e LM |
2454 | bl->needs_update = 0; |
2455 | } | |
2456 | ||
35df4500 TJB |
2457 | if (bl->loc_type == bp_loc_software_breakpoint |
2458 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2459 | { |
35df4500 | 2460 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2461 | { |
2462 | /* If the explicitly specified breakpoint type | |
2463 | is not hardware breakpoint, check the memory map to see | |
2464 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2465 | |
765dc015 VP |
2466 | Two important cases are: |
2467 | - location type is not hardware breakpoint, memory | |
2468 | is readonly. We change the type of the location to | |
2469 | hardware breakpoint. | |
4a64f543 MS |
2470 | - location type is hardware breakpoint, memory is |
2471 | read-write. This means we've previously made the | |
2472 | location hardware one, but then the memory map changed, | |
2473 | so we undo. | |
765dc015 | 2474 | |
4a64f543 MS |
2475 | When breakpoints are removed, remove_breakpoints will use |
2476 | location types we've just set here, the only possible | |
2477 | problem is that memory map has changed during running | |
2478 | program, but it's not going to work anyway with current | |
2479 | gdb. */ | |
765dc015 | 2480 | struct mem_region *mr |
0d5ed153 | 2481 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2482 | |
2483 | if (mr) | |
2484 | { | |
2485 | if (automatic_hardware_breakpoints) | |
2486 | { | |
765dc015 VP |
2487 | enum bp_loc_type new_type; |
2488 | ||
2489 | if (mr->attrib.mode != MEM_RW) | |
2490 | new_type = bp_loc_hardware_breakpoint; | |
2491 | else | |
2492 | new_type = bp_loc_software_breakpoint; | |
2493 | ||
35df4500 | 2494 | if (new_type != bl->loc_type) |
765dc015 VP |
2495 | { |
2496 | static int said = 0; | |
cc59ec59 | 2497 | |
35df4500 | 2498 | bl->loc_type = new_type; |
765dc015 VP |
2499 | if (!said) |
2500 | { | |
3e43a32a MS |
2501 | fprintf_filtered (gdb_stdout, |
2502 | _("Note: automatically using " | |
2503 | "hardware breakpoints for " | |
2504 | "read-only addresses.\n")); | |
765dc015 VP |
2505 | said = 1; |
2506 | } | |
2507 | } | |
2508 | } | |
35df4500 | 2509 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2510 | && mr->attrib.mode != MEM_RW) |
2511 | { | |
2512 | fprintf_unfiltered (tmp_error_stream, | |
2513 | _("Cannot insert breakpoint %d.\n" | |
2514 | "Cannot set software breakpoint " | |
2515 | "at read-only address %s\n"), | |
2516 | bl->owner->number, | |
2517 | paddress (bl->gdbarch, bl->address)); | |
2518 | return 1; | |
2519 | } | |
765dc015 VP |
2520 | } |
2521 | } | |
2522 | ||
879bfdc2 DJ |
2523 | /* First check to see if we have to handle an overlay. */ |
2524 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2525 | || bl->section == NULL |
2526 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2527 | { |
2528 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2529 | try |
dd61ec5c | 2530 | { |
0000e5cc PA |
2531 | int val; |
2532 | ||
dd61ec5c | 2533 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2534 | if (val) |
688fca4f | 2535 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2536 | } |
94aeb44b | 2537 | catch (gdb_exception &e) |
dd61ec5c | 2538 | { |
94aeb44b | 2539 | bp_excpt = std::move (e); |
dd61ec5c | 2540 | } |
879bfdc2 DJ |
2541 | } |
2542 | else | |
2543 | { | |
4a64f543 | 2544 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2545 | Shall we set a breakpoint at the LMA? */ |
2546 | if (!overlay_events_enabled) | |
2547 | { | |
2548 | /* Yes -- overlay event support is not active, | |
2549 | so we must try to set a breakpoint at the LMA. | |
2550 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2551 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2552 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2553 | bl->owner->number); |
879bfdc2 DJ |
2554 | else |
2555 | { | |
35df4500 TJB |
2556 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2557 | bl->section); | |
879bfdc2 | 2558 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2559 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2560 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2561 | |
2562 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2563 | try |
0000e5cc PA |
2564 | { |
2565 | int val; | |
2566 | ||
579c6ad9 | 2567 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2568 | = breakpoint_kind (bl, &addr); |
2569 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2570 | val = target_insert_breakpoint (bl->gdbarch, |
2571 | &bl->overlay_target_info); | |
2572 | if (val) | |
688fca4f PA |
2573 | bp_excpt |
2574 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2575 | } |
94aeb44b | 2576 | catch (gdb_exception &e) |
0000e5cc | 2577 | { |
94aeb44b | 2578 | bp_excpt = std::move (e); |
0000e5cc PA |
2579 | } |
2580 | ||
688fca4f | 2581 | if (bp_excpt.reason != 0) |
99361f52 | 2582 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2583 | "Overlay breakpoint %d " |
2584 | "failed: in ROM?\n", | |
35df4500 | 2585 | bl->owner->number); |
879bfdc2 DJ |
2586 | } |
2587 | } | |
2588 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2589 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2590 | { |
2591 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2592 | try |
dd61ec5c | 2593 | { |
0000e5cc PA |
2594 | int val; |
2595 | ||
dd61ec5c | 2596 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2597 | if (val) |
688fca4f | 2598 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2599 | } |
94aeb44b | 2600 | catch (gdb_exception &e) |
dd61ec5c | 2601 | { |
94aeb44b | 2602 | bp_excpt = std::move (e); |
dd61ec5c | 2603 | } |
879bfdc2 DJ |
2604 | } |
2605 | else | |
2606 | { | |
2607 | /* No. This breakpoint will not be inserted. | |
2608 | No error, but do not mark the bp as 'inserted'. */ | |
2609 | return 0; | |
2610 | } | |
2611 | } | |
2612 | ||
688fca4f | 2613 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2614 | { |
2615 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2616 | |
2617 | /* In some cases, we might not be able to insert a | |
2618 | breakpoint in a shared library that has already been | |
2619 | removed, but we have not yet processed the shlib unload | |
2620 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2621 | breakpoint insertion themselves can't tell why the |
2622 | breakpoint insertion failed (e.g., the remote target | |
2623 | doesn't define error codes), so we must treat generic | |
2624 | errors as memory errors. */ | |
688fca4f PA |
2625 | if (bp_excpt.reason == RETURN_ERROR |
2626 | && (bp_excpt.error == GENERIC_ERROR | |
2627 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2628 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2629 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2630 | || shared_objfile_contains_address_p (bl->pspace, |
2631 | bl->address))) | |
879bfdc2 | 2632 | { |
4a64f543 | 2633 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2634 | bl->shlib_disabled = 1; |
76727919 | 2635 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2636 | if (!*disabled_breaks) |
2637 | { | |
2638 | fprintf_unfiltered (tmp_error_stream, | |
2639 | "Cannot insert breakpoint %d.\n", | |
2640 | bl->owner->number); | |
2641 | fprintf_unfiltered (tmp_error_stream, | |
2642 | "Temporarily disabling shared " | |
2643 | "library breakpoints:\n"); | |
2644 | } | |
2645 | *disabled_breaks = 1; | |
879bfdc2 | 2646 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2647 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2648 | return 0; |
879bfdc2 DJ |
2649 | } |
2650 | else | |
879bfdc2 | 2651 | { |
35df4500 | 2652 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2653 | { |
0000e5cc | 2654 | *hw_breakpoint_error = 1; |
688fca4f | 2655 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2656 | fprintf_unfiltered (tmp_error_stream, |
2657 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2658 | bl->owner->number, |
2659 | bp_excpt.message ? ":" : ".\n"); | |
2660 | if (bp_excpt.message != NULL) | |
2661 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2662 | bp_excpt.what ()); |
879bfdc2 DJ |
2663 | } |
2664 | else | |
2665 | { | |
688fca4f | 2666 | if (bp_excpt.message == NULL) |
0000e5cc | 2667 | { |
1ccbe998 | 2668 | std::string message |
0000e5cc PA |
2669 | = memory_error_message (TARGET_XFER_E_IO, |
2670 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2671 | |
2672 | fprintf_unfiltered (tmp_error_stream, | |
2673 | "Cannot insert breakpoint %d.\n" | |
2674 | "%s\n", | |
1ccbe998 | 2675 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2676 | } |
2677 | else | |
2678 | { | |
2679 | fprintf_unfiltered (tmp_error_stream, | |
2680 | "Cannot insert breakpoint %d: %s\n", | |
2681 | bl->owner->number, | |
3d6e9d23 | 2682 | bp_excpt.what ()); |
0000e5cc | 2683 | } |
879bfdc2 | 2684 | } |
0000e5cc | 2685 | return 1; |
879bfdc2 DJ |
2686 | |
2687 | } | |
2688 | } | |
2689 | else | |
35df4500 | 2690 | bl->inserted = 1; |
879bfdc2 | 2691 | |
0000e5cc | 2692 | return 0; |
879bfdc2 DJ |
2693 | } |
2694 | ||
35df4500 | 2695 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2696 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2697 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2698 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2699 | { |
0000e5cc PA |
2700 | int val; |
2701 | ||
77b06cd7 TJB |
2702 | gdb_assert (bl->owner->ops != NULL |
2703 | && bl->owner->ops->insert_location != NULL); | |
2704 | ||
2705 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2706 | |
2707 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2708 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2709 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2710 | { |
2711 | struct bp_location *loc, **loc_temp; | |
2712 | ||
2713 | /* But don't try to insert it, if there's already another | |
2714 | hw_access location that would be considered a duplicate | |
2715 | of this one. */ | |
2716 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2717 | if (loc != bl |
85d721b8 | 2718 | && loc->watchpoint_type == hw_access |
35df4500 | 2719 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2720 | { |
35df4500 TJB |
2721 | bl->duplicate = 1; |
2722 | bl->inserted = 1; | |
2723 | bl->target_info = loc->target_info; | |
2724 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2725 | val = 0; |
2726 | break; | |
2727 | } | |
2728 | ||
2729 | if (val == 1) | |
2730 | { | |
77b06cd7 TJB |
2731 | bl->watchpoint_type = hw_access; |
2732 | val = bl->owner->ops->insert_location (bl); | |
2733 | ||
2734 | if (val) | |
2735 | /* Back to the original value. */ | |
2736 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2737 | } |
2738 | } | |
2739 | ||
35df4500 | 2740 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2741 | } |
2742 | ||
35df4500 | 2743 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2744 | { |
0000e5cc PA |
2745 | int val; |
2746 | ||
77b06cd7 TJB |
2747 | gdb_assert (bl->owner->ops != NULL |
2748 | && bl->owner->ops->insert_location != NULL); | |
2749 | ||
2750 | val = bl->owner->ops->insert_location (bl); | |
2751 | if (val) | |
2752 | { | |
2753 | bl->owner->enable_state = bp_disabled; | |
2754 | ||
2755 | if (val == 1) | |
2756 | warning (_("\ | |
2757 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2758 | of catchpoint."), bl->owner->number); | |
2759 | else | |
2760 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2761 | } | |
2762 | ||
2763 | bl->inserted = (val == 0); | |
1640b821 DJ |
2764 | |
2765 | /* We've already printed an error message if there was a problem | |
2766 | inserting this catchpoint, and we've disabled the catchpoint, | |
2767 | so just return success. */ | |
2768 | return 0; | |
879bfdc2 DJ |
2769 | } |
2770 | ||
2771 | return 0; | |
2772 | } | |
2773 | ||
6c95b8df PA |
2774 | /* This function is called when program space PSPACE is about to be |
2775 | deleted. It takes care of updating breakpoints to not reference | |
2776 | PSPACE anymore. */ | |
2777 | ||
2778 | void | |
2779 | breakpoint_program_space_exit (struct program_space *pspace) | |
2780 | { | |
2781 | struct breakpoint *b, *b_temp; | |
876fa593 | 2782 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2783 | |
2784 | /* Remove any breakpoint that was set through this program space. */ | |
2785 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2786 | { | |
2787 | if (b->pspace == pspace) | |
2788 | delete_breakpoint (b); | |
2789 | } | |
2790 | ||
2791 | /* Breakpoints set through other program spaces could have locations | |
2792 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2793 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2794 | { |
2795 | struct bp_location *tmp; | |
2796 | ||
2797 | if (loc->pspace == pspace) | |
2798 | { | |
2bdf28a0 | 2799 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2800 | if (loc->owner->loc == loc) |
2801 | loc->owner->loc = loc->next; | |
2802 | else | |
2803 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2804 | if (tmp->next == loc) | |
2805 | { | |
2806 | tmp->next = loc->next; | |
2807 | break; | |
2808 | } | |
2809 | } | |
2810 | } | |
2811 | ||
2812 | /* Now update the global location list to permanently delete the | |
2813 | removed locations above. */ | |
44702360 | 2814 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2815 | } |
2816 | ||
74960c60 VP |
2817 | /* Make sure all breakpoints are inserted in inferior. |
2818 | Throws exception on any error. | |
2819 | A breakpoint that is already inserted won't be inserted | |
2820 | again, so calling this function twice is safe. */ | |
2821 | void | |
2822 | insert_breakpoints (void) | |
2823 | { | |
2824 | struct breakpoint *bpt; | |
2825 | ||
2826 | ALL_BREAKPOINTS (bpt) | |
2827 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2828 | { |
2829 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2830 | ||
2831 | update_watchpoint (w, 0 /* don't reparse. */); | |
2832 | } | |
74960c60 | 2833 | |
04086b45 PA |
2834 | /* Updating watchpoints creates new locations, so update the global |
2835 | location list. Explicitly tell ugll to insert locations and | |
2836 | ignore breakpoints_always_inserted_mode. */ | |
2837 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2838 | } |
2839 | ||
20388dd6 YQ |
2840 | /* Invoke CALLBACK for each of bp_location. */ |
2841 | ||
2842 | void | |
2843 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2844 | { | |
2845 | struct bp_location *loc, **loc_tmp; | |
2846 | ||
2847 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2848 | { | |
2849 | callback (loc, NULL); | |
2850 | } | |
2851 | } | |
2852 | ||
b775012e LM |
2853 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2854 | target. It is the case with deleting and disabling of breakpoints when using | |
2855 | always-inserted mode. */ | |
2856 | ||
2857 | static void | |
2858 | update_inserted_breakpoint_locations (void) | |
2859 | { | |
2860 | struct bp_location *bl, **blp_tmp; | |
2861 | int error_flag = 0; | |
2862 | int val = 0; | |
2863 | int disabled_breaks = 0; | |
2864 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2865 | int hw_bp_details_reported = 0; |
b775012e | 2866 | |
d7e74731 | 2867 | string_file tmp_error_stream; |
b775012e LM |
2868 | |
2869 | /* Explicitly mark the warning -- this will only be printed if | |
2870 | there was an error. */ | |
d7e74731 | 2871 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2872 | |
5ed8105e | 2873 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2874 | |
2875 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2876 | { | |
2877 | /* We only want to update software breakpoints and hardware | |
2878 | breakpoints. */ | |
2879 | if (!is_breakpoint (bl->owner)) | |
2880 | continue; | |
2881 | ||
2882 | /* We only want to update locations that are already inserted | |
2883 | and need updating. This is to avoid unwanted insertion during | |
2884 | deletion of breakpoints. */ | |
4daf1902 | 2885 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2886 | continue; |
2887 | ||
2888 | switch_to_program_space_and_thread (bl->pspace); | |
2889 | ||
2890 | /* For targets that support global breakpoints, there's no need | |
2891 | to select an inferior to insert breakpoint to. In fact, even | |
2892 | if we aren't attached to any process yet, we should still | |
2893 | insert breakpoints. */ | |
f5656ead | 2894 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2895 | && inferior_ptid == null_ptid) |
b775012e LM |
2896 | continue; |
2897 | ||
d7e74731 | 2898 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2899 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2900 | if (val) |
2901 | error_flag = val; | |
2902 | } | |
2903 | ||
2904 | if (error_flag) | |
2905 | { | |
223ffa71 | 2906 | target_terminal::ours_for_output (); |
b775012e LM |
2907 | error_stream (tmp_error_stream); |
2908 | } | |
b775012e LM |
2909 | } |
2910 | ||
c30eee59 | 2911 | /* Used when starting or continuing the program. */ |
c906108c | 2912 | |
74960c60 VP |
2913 | static void |
2914 | insert_breakpoint_locations (void) | |
c906108c | 2915 | { |
a5606eee | 2916 | struct breakpoint *bpt; |
35df4500 | 2917 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2918 | int error_flag = 0; |
c906108c | 2919 | int val = 0; |
3fbb6ffa | 2920 | int disabled_breaks = 0; |
81d0cc19 | 2921 | int hw_breakpoint_error = 0; |
dd61ec5c | 2922 | int hw_bp_error_explained_already = 0; |
c906108c | 2923 | |
d7e74731 PA |
2924 | string_file tmp_error_stream; |
2925 | ||
81d0cc19 GS |
2926 | /* Explicitly mark the warning -- this will only be printed if |
2927 | there was an error. */ | |
d7e74731 | 2928 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2929 | |
5ed8105e | 2930 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2931 | |
35df4500 | 2932 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2933 | { |
b775012e | 2934 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2935 | continue; |
2936 | ||
4a64f543 MS |
2937 | /* There is no point inserting thread-specific breakpoints if |
2938 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2939 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2940 | if (bl->owner->thread != -1 |
5d5658a1 | 2941 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2942 | continue; |
2943 | ||
35df4500 | 2944 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2945 | |
2946 | /* For targets that support global breakpoints, there's no need | |
2947 | to select an inferior to insert breakpoint to. In fact, even | |
2948 | if we aren't attached to any process yet, we should still | |
2949 | insert breakpoints. */ | |
f5656ead | 2950 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
d7e15655 | 2951 | && inferior_ptid == null_ptid) |
6c95b8df PA |
2952 | continue; |
2953 | ||
d7e74731 | 2954 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2955 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2956 | if (val) |
eacd795a | 2957 | error_flag = val; |
879bfdc2 | 2958 | } |
c906108c | 2959 | |
4a64f543 MS |
2960 | /* If we failed to insert all locations of a watchpoint, remove |
2961 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2962 | ALL_BREAKPOINTS (bpt) |
2963 | { | |
2964 | int some_failed = 0; | |
2965 | struct bp_location *loc; | |
2966 | ||
2967 | if (!is_hardware_watchpoint (bpt)) | |
2968 | continue; | |
2969 | ||
d6b74ac4 | 2970 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2971 | continue; |
74960c60 VP |
2972 | |
2973 | if (bpt->disposition == disp_del_at_next_stop) | |
2974 | continue; | |
a5606eee VP |
2975 | |
2976 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2977 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2978 | { |
2979 | some_failed = 1; | |
2980 | break; | |
2981 | } | |
2982 | if (some_failed) | |
2983 | { | |
2984 | for (loc = bpt->loc; loc; loc = loc->next) | |
2985 | if (loc->inserted) | |
834c0d03 | 2986 | remove_breakpoint (loc); |
a5606eee VP |
2987 | |
2988 | hw_breakpoint_error = 1; | |
d7e74731 PA |
2989 | tmp_error_stream.printf ("Could not insert " |
2990 | "hardware watchpoint %d.\n", | |
2991 | bpt->number); | |
eacd795a | 2992 | error_flag = -1; |
a5606eee VP |
2993 | } |
2994 | } | |
2995 | ||
eacd795a | 2996 | if (error_flag) |
81d0cc19 GS |
2997 | { |
2998 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2999 | message about possibly exhausted resources. */ | |
dd61ec5c | 3000 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3001 | { |
d7e74731 | 3002 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3003 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3004 | } |
223ffa71 | 3005 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3006 | error_stream (tmp_error_stream); |
3007 | } | |
c906108c SS |
3008 | } |
3009 | ||
c30eee59 TJB |
3010 | /* Used when the program stops. |
3011 | Returns zero if successful, or non-zero if there was a problem | |
3012 | removing a breakpoint location. */ | |
3013 | ||
c906108c | 3014 | int |
fba45db2 | 3015 | remove_breakpoints (void) |
c906108c | 3016 | { |
35df4500 | 3017 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3018 | int val = 0; |
c906108c | 3019 | |
35df4500 | 3020 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3021 | { |
1e4d1764 | 3022 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3023 | val |= remove_breakpoint (bl); |
c5aa993b | 3024 | } |
3a1bae8e | 3025 | return val; |
c906108c SS |
3026 | } |
3027 | ||
49fa26b0 PA |
3028 | /* When a thread exits, remove breakpoints that are related to |
3029 | that thread. */ | |
3030 | ||
3031 | static void | |
3032 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3033 | { | |
3034 | struct breakpoint *b, *b_tmp; | |
3035 | ||
3036 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3037 | { | |
5d5658a1 | 3038 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3039 | { |
3040 | b->disposition = disp_del_at_next_stop; | |
3041 | ||
3042 | printf_filtered (_("\ | |
43792cf0 PA |
3043 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3044 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3045 | |
3046 | /* Hide it from the user. */ | |
3047 | b->number = 0; | |
3048 | } | |
3049 | } | |
3050 | } | |
3051 | ||
f3869b1a | 3052 | /* See breakpoint.h. */ |
6c95b8df | 3053 | |
f3869b1a | 3054 | void |
00431a78 | 3055 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3056 | { |
35df4500 | 3057 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3058 | int val; |
6c95b8df | 3059 | |
35df4500 | 3060 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3061 | { |
35df4500 | 3062 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3063 | continue; |
3064 | ||
fc126975 | 3065 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3066 | { |
834c0d03 | 3067 | val = remove_breakpoint (bl); |
6c95b8df | 3068 | if (val != 0) |
f3869b1a | 3069 | return; |
6c95b8df PA |
3070 | } |
3071 | } | |
6c95b8df PA |
3072 | } |
3073 | ||
e58b0e63 PA |
3074 | static int internal_breakpoint_number = -1; |
3075 | ||
84f4c1fe PM |
3076 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3077 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3078 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3079 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3080 | breakpoint_count and that value incremented. Internal breakpoints |
3081 | do not set the internal var bpnum. */ | |
3082 | static void | |
3083 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3084 | { | |
3085 | if (internal) | |
3086 | b->number = internal_breakpoint_number--; | |
3087 | else | |
3088 | { | |
3089 | set_breakpoint_count (breakpoint_count + 1); | |
3090 | b->number = breakpoint_count; | |
3091 | } | |
3092 | } | |
3093 | ||
e62c965a | 3094 | static struct breakpoint * |
a6d9a66e | 3095 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3096 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3097 | const struct breakpoint_ops *ops) |
e62c965a | 3098 | { |
51abb421 | 3099 | symtab_and_line sal; |
e62c965a PP |
3100 | sal.pc = address; |
3101 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3102 | sal.pspace = current_program_space; |
e62c965a | 3103 | |
51abb421 | 3104 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3105 | b->number = internal_breakpoint_number--; |
3106 | b->disposition = disp_donttouch; | |
3107 | ||
3108 | return b; | |
3109 | } | |
3110 | ||
17450429 PP |
3111 | static const char *const longjmp_names[] = |
3112 | { | |
3113 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3114 | }; | |
3115 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3116 | ||
3117 | /* Per-objfile data private to breakpoint.c. */ | |
3118 | struct breakpoint_objfile_data | |
3119 | { | |
3120 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3121 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3122 | |
3123 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3124 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3125 | |
28106bc2 | 3126 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3127 | int longjmp_searched = 0; |
28106bc2 | 3128 | |
45461e0d SM |
3129 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3130 | references. */ | |
3131 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3132 | |
17450429 | 3133 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3134 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3135 | |
3136 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3137 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3138 | |
3139 | /* True if we have looked for exception probes. */ | |
43dce439 | 3140 | int exception_searched = 0; |
28106bc2 | 3141 | |
45461e0d SM |
3142 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3143 | references. */ | |
3144 | std::vector<probe *> exception_probes; | |
17450429 PP |
3145 | }; |
3146 | ||
51d3063a TT |
3147 | static const struct objfile_key<breakpoint_objfile_data> |
3148 | breakpoint_objfile_key; | |
17450429 PP |
3149 | |
3150 | /* Minimal symbol not found sentinel. */ | |
3151 | static struct minimal_symbol msym_not_found; | |
3152 | ||
3153 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3154 | ||
3155 | static int | |
3156 | msym_not_found_p (const struct minimal_symbol *msym) | |
3157 | { | |
3158 | return msym == &msym_not_found; | |
3159 | } | |
3160 | ||
3161 | /* Return per-objfile data needed by breakpoint.c. | |
3162 | Allocate the data if necessary. */ | |
3163 | ||
3164 | static struct breakpoint_objfile_data * | |
3165 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3166 | { | |
3167 | struct breakpoint_objfile_data *bp_objfile_data; | |
3168 | ||
51d3063a | 3169 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3170 | if (bp_objfile_data == NULL) |
51d3063a | 3171 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3172 | return bp_objfile_data; |
3173 | } | |
3174 | ||
e62c965a | 3175 | static void |
af02033e | 3176 | create_overlay_event_breakpoint (void) |
e62c965a | 3177 | { |
af02033e | 3178 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3179 | |
2030c079 | 3180 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3181 | { |
3182 | struct breakpoint *b; | |
17450429 PP |
3183 | struct breakpoint_objfile_data *bp_objfile_data; |
3184 | CORE_ADDR addr; | |
67994074 | 3185 | struct explicit_location explicit_loc; |
69de3c6a | 3186 | |
17450429 PP |
3187 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3188 | ||
3b7344d5 | 3189 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3190 | continue; |
3191 | ||
3b7344d5 | 3192 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3193 | { |
3b7344d5 | 3194 | struct bound_minimal_symbol m; |
17450429 PP |
3195 | |
3196 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3197 | if (m.minsym == NULL) |
17450429 PP |
3198 | { |
3199 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3200 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3201 | continue; |
3202 | } | |
3203 | bp_objfile_data->overlay_msym = m; | |
3204 | } | |
e62c965a | 3205 | |
77e371c0 | 3206 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3207 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3208 | bp_overlay_event, |
3209 | &internal_breakpoint_ops); | |
67994074 KS |
3210 | initialize_explicit_location (&explicit_loc); |
3211 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3212 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3213 | |
69de3c6a PP |
3214 | if (overlay_debugging == ovly_auto) |
3215 | { | |
3216 | b->enable_state = bp_enabled; | |
3217 | overlay_events_enabled = 1; | |
3218 | } | |
3219 | else | |
3220 | { | |
3221 | b->enable_state = bp_disabled; | |
3222 | overlay_events_enabled = 0; | |
3223 | } | |
e62c965a | 3224 | } |
e62c965a PP |
3225 | } |
3226 | ||
0fd8e87f | 3227 | static void |
af02033e | 3228 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3229 | { |
6c95b8df | 3230 | struct program_space *pspace; |
6c95b8df | 3231 | |
5ed8105e | 3232 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3233 | |
6c95b8df | 3234 | ALL_PSPACES (pspace) |
af02033e | 3235 | { |
af02033e PP |
3236 | set_current_program_space (pspace); |
3237 | ||
2030c079 | 3238 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3239 | { |
3240 | int i; | |
3241 | struct gdbarch *gdbarch; | |
3242 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3243 | |
aed57c53 | 3244 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3245 | |
aed57c53 | 3246 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3247 | |
aed57c53 TT |
3248 | if (!bp_objfile_data->longjmp_searched) |
3249 | { | |
3250 | std::vector<probe *> ret | |
3251 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3252 | |
aed57c53 TT |
3253 | if (!ret.empty ()) |
3254 | { | |
3255 | /* We are only interested in checking one element. */ | |
3256 | probe *p = ret[0]; | |
3257 | ||
3258 | if (!p->can_evaluate_arguments ()) | |
3259 | { | |
3260 | /* We cannot use the probe interface here, because it does | |
3261 | not know how to evaluate arguments. */ | |
3262 | ret.clear (); | |
3263 | } | |
3264 | } | |
3265 | bp_objfile_data->longjmp_probes = ret; | |
3266 | bp_objfile_data->longjmp_searched = 1; | |
3267 | } | |
25f9533e | 3268 | |
aed57c53 TT |
3269 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3270 | { | |
3271 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3272 | { | |
3273 | struct breakpoint *b; | |
3274 | ||
3275 | b = create_internal_breakpoint (gdbarch, | |
3276 | p->get_relocated_address (objfile), | |
3277 | bp_longjmp_master, | |
3278 | &internal_breakpoint_ops); | |
3279 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3280 | b->enable_state = bp_disabled; | |
3281 | } | |
28106bc2 | 3282 | |
aed57c53 TT |
3283 | continue; |
3284 | } | |
28106bc2 | 3285 | |
aed57c53 | 3286 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
28106bc2 | 3287 | continue; |
28106bc2 | 3288 | |
aed57c53 TT |
3289 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3290 | { | |
3291 | struct breakpoint *b; | |
3292 | const char *func_name; | |
3293 | CORE_ADDR addr; | |
3294 | struct explicit_location explicit_loc; | |
0fd8e87f | 3295 | |
aed57c53 TT |
3296 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3297 | continue; | |
17450429 | 3298 | |
aed57c53 TT |
3299 | func_name = longjmp_names[i]; |
3300 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3301 | { | |
3302 | struct bound_minimal_symbol m; | |
3303 | ||
3304 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3305 | if (m.minsym == NULL) | |
3306 | { | |
3307 | /* Prevent future lookups in this objfile. */ | |
3308 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3309 | continue; | |
3310 | } | |
3311 | bp_objfile_data->longjmp_msym[i] = m; | |
3312 | } | |
17450429 | 3313 | |
aed57c53 TT |
3314 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3315 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3316 | &internal_breakpoint_ops); | |
3317 | initialize_explicit_location (&explicit_loc); | |
3318 | explicit_loc.function_name = ASTRDUP (func_name); | |
3319 | b->location = new_explicit_location (&explicit_loc); | |
3320 | b->enable_state = bp_disabled; | |
3321 | } | |
3322 | } | |
af02033e | 3323 | } |
0fd8e87f UW |
3324 | } |
3325 | ||
af02033e | 3326 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3327 | static void |
af02033e | 3328 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3329 | { |
3330 | struct program_space *pspace; | |
af02033e | 3331 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3332 | |
5ed8105e | 3333 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3334 | |
3335 | ALL_PSPACES (pspace) | |
17450429 | 3336 | { |
17450429 PP |
3337 | CORE_ADDR addr; |
3338 | ||
3339 | set_current_program_space (pspace); | |
3340 | ||
2030c079 | 3341 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3342 | { |
3343 | struct breakpoint *b; | |
3344 | struct breakpoint_objfile_data *bp_objfile_data; | |
3345 | struct explicit_location explicit_loc; | |
aa7d318d | 3346 | |
aed57c53 | 3347 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3348 | |
aed57c53 TT |
3349 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3350 | continue; | |
17450429 | 3351 | |
aed57c53 TT |
3352 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3353 | { | |
3354 | struct bound_minimal_symbol m; | |
17450429 | 3355 | |
aed57c53 TT |
3356 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3357 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3358 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3359 | { | |
3360 | /* Prevent future lookups in this objfile. */ | |
3361 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3362 | continue; | |
3363 | } | |
3364 | bp_objfile_data->terminate_msym = m; | |
3365 | } | |
aa7d318d | 3366 | |
aed57c53 TT |
3367 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3368 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
3369 | bp_std_terminate_master, | |
3370 | &internal_breakpoint_ops); | |
3371 | initialize_explicit_location (&explicit_loc); | |
3372 | explicit_loc.function_name = ASTRDUP (func_name); | |
3373 | b->location = new_explicit_location (&explicit_loc); | |
3374 | b->enable_state = bp_disabled; | |
3375 | } | |
17450429 | 3376 | } |
aa7d318d TT |
3377 | } |
3378 | ||
186c406b TT |
3379 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3380 | ||
70221824 | 3381 | static void |
186c406b TT |
3382 | create_exception_master_breakpoint (void) |
3383 | { | |
17450429 | 3384 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3385 | |
2030c079 | 3386 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3387 | { |
17450429 PP |
3388 | struct breakpoint *b; |
3389 | struct gdbarch *gdbarch; | |
3390 | struct breakpoint_objfile_data *bp_objfile_data; | |
3391 | CORE_ADDR addr; | |
67994074 | 3392 | struct explicit_location explicit_loc; |
17450429 PP |
3393 | |
3394 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3395 | ||
28106bc2 SDJ |
3396 | /* We prefer the SystemTap probe point if it exists. */ |
3397 | if (!bp_objfile_data->exception_searched) | |
3398 | { | |
45461e0d SM |
3399 | std::vector<probe *> ret |
3400 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3401 | |
45461e0d | 3402 | if (!ret.empty ()) |
25f9533e SDJ |
3403 | { |
3404 | /* We are only interested in checking one element. */ | |
45461e0d | 3405 | probe *p = ret[0]; |
25f9533e | 3406 | |
935676c9 | 3407 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3408 | { |
3409 | /* We cannot use the probe interface here, because it does | |
3410 | not know how to evaluate arguments. */ | |
45461e0d | 3411 | ret.clear (); |
25f9533e SDJ |
3412 | } |
3413 | } | |
3414 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3415 | bp_objfile_data->exception_searched = 1; |
3416 | } | |
3417 | ||
45461e0d | 3418 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3419 | { |
b926417a | 3420 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3421 | |
3422 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3423 | { |
729662a5 | 3424 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3425 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3426 | bp_exception_master, |
3427 | &internal_breakpoint_ops); | |
d28cd78a | 3428 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3429 | b->enable_state = bp_disabled; |
3430 | } | |
3431 | ||
3432 | continue; | |
3433 | } | |
3434 | ||
3435 | /* Otherwise, try the hook function. */ | |
3436 | ||
3b7344d5 | 3437 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3438 | continue; |
3439 | ||
3440 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3441 | |
3b7344d5 | 3442 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3443 | { |
3b7344d5 | 3444 | struct bound_minimal_symbol debug_hook; |
186c406b | 3445 | |
17450429 | 3446 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3447 | if (debug_hook.minsym == NULL) |
17450429 | 3448 | { |
3b7344d5 | 3449 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3450 | continue; |
3451 | } | |
3452 | ||
3453 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3454 | } |
17450429 | 3455 | |
77e371c0 | 3456 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3457 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3458 | current_top_target ()); | |
06edf0c0 PA |
3459 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3460 | &internal_breakpoint_ops); | |
67994074 KS |
3461 | initialize_explicit_location (&explicit_loc); |
3462 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3463 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3464 | b->enable_state = bp_disabled; |
186c406b | 3465 | } |
186c406b TT |
3466 | } |
3467 | ||
9ef9e6a6 KS |
3468 | /* Does B have a location spec? */ |
3469 | ||
3470 | static int | |
3471 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3472 | { | |
d28cd78a | 3473 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3474 | } |
3475 | ||
c906108c | 3476 | void |
fba45db2 | 3477 | update_breakpoints_after_exec (void) |
c906108c | 3478 | { |
35df4500 | 3479 | struct breakpoint *b, *b_tmp; |
876fa593 | 3480 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3481 | |
25b22b0a PA |
3482 | /* We're about to delete breakpoints from GDB's lists. If the |
3483 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3484 | writing the breakpoints' "shadow contents" back into memory. The | |
3485 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3486 | do that. Instead, the target is responsible from marking | |
3487 | breakpoints out as soon as it detects an exec. We don't do that | |
3488 | here instead, because there may be other attempts to delete | |
3489 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3490 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3491 | if (bploc->pspace == current_program_space) |
3492 | gdb_assert (!bploc->inserted); | |
c906108c | 3493 | |
35df4500 | 3494 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3495 | { |
6c95b8df PA |
3496 | if (b->pspace != current_program_space) |
3497 | continue; | |
3498 | ||
4a64f543 | 3499 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3500 | if (b->type == bp_shlib_event) |
3501 | { | |
3502 | delete_breakpoint (b); | |
3503 | continue; | |
3504 | } | |
c906108c | 3505 | |
4a64f543 | 3506 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3507 | if (b->type == bp_jit_event) |
3508 | { | |
3509 | delete_breakpoint (b); | |
3510 | continue; | |
3511 | } | |
3512 | ||
1900040c | 3513 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3514 | as must overlay event and longjmp master breakpoints. */ |
3515 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3516 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3517 | || b->type == bp_exception_master) | |
c4093a6a JM |
3518 | { |
3519 | delete_breakpoint (b); | |
3520 | continue; | |
3521 | } | |
3522 | ||
4a64f543 | 3523 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3524 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3525 | { |
3526 | delete_breakpoint (b); | |
3527 | continue; | |
3528 | } | |
3529 | ||
7c16b83e PA |
3530 | /* Just like single-step breakpoints. */ |
3531 | if (b->type == bp_single_step) | |
3532 | { | |
3533 | delete_breakpoint (b); | |
3534 | continue; | |
3535 | } | |
3536 | ||
611c83ae PA |
3537 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3538 | after an exec. */ | |
186c406b | 3539 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3540 | || b->type == bp_longjmp_call_dummy |
186c406b | 3541 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3542 | { |
3543 | delete_breakpoint (b); | |
3544 | continue; | |
3545 | } | |
3546 | ||
ce78b96d JB |
3547 | if (b->type == bp_catchpoint) |
3548 | { | |
3549 | /* For now, none of the bp_catchpoint breakpoints need to | |
3550 | do anything at this point. In the future, if some of | |
3551 | the catchpoints need to something, we will need to add | |
3552 | a new method, and call this method from here. */ | |
3553 | continue; | |
3554 | } | |
3555 | ||
c5aa993b JM |
3556 | /* bp_finish is a special case. The only way we ought to be able |
3557 | to see one of these when an exec() has happened, is if the user | |
3558 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3559 | carries them to the call-site of the current callee, by setting | |
3560 | a temporary bp there and resuming. But in this case, the finish | |
3561 | will carry them entirely through the vfork & exec. | |
3562 | ||
3563 | We don't want to allow a bp_finish to remain inserted now. But | |
3564 | we can't safely delete it, 'cause finish_command has a handle to | |
3565 | the bp on a bpstat, and will later want to delete it. There's a | |
3566 | chance (and I've seen it happen) that if we delete the bp_finish | |
3567 | here, that its storage will get reused by the time finish_command | |
3568 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3569 | We really must allow finish_command to delete a bp_finish. | |
3570 | ||
e5dd4106 | 3571 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3572 | it's safe to delete something others may have handles to?" |
3573 | problem, what we'll do here is just uninsert the bp_finish, and | |
3574 | let finish_command delete it. | |
3575 | ||
3576 | (We know the bp_finish is "doomed" in the sense that it's | |
3577 | momentary, and will be deleted as soon as finish_command sees | |
3578 | the inferior stopped. So it doesn't matter that the bp's | |
3579 | address is probably bogus in the new a.out, unlike e.g., the | |
3580 | solib breakpoints.) */ | |
c5aa993b | 3581 | |
c5aa993b JM |
3582 | if (b->type == bp_finish) |
3583 | { | |
3584 | continue; | |
3585 | } | |
3586 | ||
3587 | /* Without a symbolic address, we have little hope of the | |
3588 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3589 | a.out. */ |
9ef9e6a6 | 3590 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3591 | { |
3592 | delete_breakpoint (b); | |
3593 | continue; | |
3594 | } | |
c5aa993b | 3595 | } |
c906108c SS |
3596 | } |
3597 | ||
3598 | int | |
d80ee84f | 3599 | detach_breakpoints (ptid_t ptid) |
c906108c | 3600 | { |
35df4500 | 3601 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3602 | int val = 0; |
2989a365 | 3603 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3604 | struct inferior *inf = current_inferior (); |
c5aa993b | 3605 | |
e99b03dc | 3606 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3607 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3608 | |
6c95b8df | 3609 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3610 | inferior_ptid = ptid; |
35df4500 | 3611 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3612 | { |
35df4500 | 3613 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3614 | continue; |
3615 | ||
bd9673a4 PW |
3616 | /* This function must physically remove breakpoints locations |
3617 | from the specified ptid, without modifying the breakpoint | |
3618 | package's state. Locations of type bp_loc_other are only | |
3619 | maintained at GDB side. So, there is no need to remove | |
3620 | these bp_loc_other locations. Moreover, removing these | |
3621 | would modify the breakpoint package's state. */ | |
3622 | if (bl->loc_type == bp_loc_other) | |
3623 | continue; | |
3624 | ||
35df4500 | 3625 | if (bl->inserted) |
b2b6a7da | 3626 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3627 | } |
d03285ec | 3628 | |
3a1bae8e | 3629 | return val; |
c906108c SS |
3630 | } |
3631 | ||
35df4500 | 3632 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3633 | Note that this is used to detach breakpoints from a child fork. |
3634 | When we get here, the child isn't in the inferior list, and neither | |
3635 | do we have objects to represent its address space --- we should | |
35df4500 | 3636 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3637 | |
c906108c | 3638 | static int |
b2b6a7da | 3639 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3640 | { |
3641 | int val; | |
c5aa993b | 3642 | |
35df4500 TJB |
3643 | /* BL is never in moribund_locations by our callers. */ |
3644 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3645 | |
74960c60 VP |
3646 | /* The type of none suggests that owner is actually deleted. |
3647 | This should not ever happen. */ | |
35df4500 | 3648 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3649 | |
35df4500 TJB |
3650 | if (bl->loc_type == bp_loc_software_breakpoint |
3651 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3652 | { |
c02f5703 MS |
3653 | /* "Normal" instruction breakpoint: either the standard |
3654 | trap-instruction bp (bp_breakpoint), or a | |
3655 | bp_hardware_breakpoint. */ | |
3656 | ||
3657 | /* First check to see if we have to handle an overlay. */ | |
3658 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3659 | || bl->section == NULL |
3660 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3661 | { |
3662 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3663 | |
3664 | /* If we're trying to uninsert a memory breakpoint that we | |
3665 | know is set in a dynamic object that is marked | |
3666 | shlib_disabled, then either the dynamic object was | |
3667 | removed with "remove-symbol-file" or with | |
3668 | "nosharedlibrary". In the former case, we don't know | |
3669 | whether another dynamic object might have loaded over the | |
3670 | breakpoint's address -- the user might well let us know | |
3671 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3672 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3673 | list of dynamically loaded objects). If we have the |
3674 | breakpoint's shadow memory, that is, this is a software | |
3675 | breakpoint managed by GDB, check whether the breakpoint | |
3676 | is still inserted in memory, to avoid overwriting wrong | |
3677 | code with stale saved shadow contents. Note that HW | |
3678 | breakpoints don't have shadow memory, as they're | |
3679 | implemented using a mechanism that is not dependent on | |
3680 | being able to modify the target's memory, and as such | |
3681 | they should always be removed. */ | |
3682 | if (bl->shlib_disabled | |
3683 | && bl->target_info.shadow_len != 0 | |
3684 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3685 | val = 0; | |
3686 | else | |
73971819 | 3687 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3688 | } |
c906108c SS |
3689 | else |
3690 | { | |
4a64f543 | 3691 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3692 | Did we set a breakpoint at the LMA? */ |
3693 | if (!overlay_events_enabled) | |
3694 | { | |
3695 | /* Yes -- overlay event support is not active, so we | |
3696 | should have set a breakpoint at the LMA. Remove it. | |
3697 | */ | |
c02f5703 MS |
3698 | /* Ignore any failures: if the LMA is in ROM, we will |
3699 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3700 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3701 | target_remove_hw_breakpoint (bl->gdbarch, | |
3702 | &bl->overlay_target_info); | |
c02f5703 | 3703 | else |
35df4500 | 3704 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3705 | &bl->overlay_target_info, |
3706 | reason); | |
c02f5703 MS |
3707 | } |
3708 | /* Did we set a breakpoint at the VMA? | |
3709 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3710 | if (bl->inserted) |
c906108c | 3711 | { |
c02f5703 MS |
3712 | /* Yes -- remove it. Previously we did not bother to |
3713 | remove the breakpoint if the section had been | |
3714 | unmapped, but let's not rely on that being safe. We | |
3715 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3716 | |
3717 | /* However, we should remove *software* breakpoints only | |
3718 | if the section is still mapped, or else we overwrite | |
3719 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3720 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3721 | || section_is_mapped (bl->section)) | |
73971819 | 3722 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3723 | else |
3724 | val = 0; | |
c906108c | 3725 | } |
c02f5703 MS |
3726 | else |
3727 | { | |
3728 | /* No -- not inserted, so no need to remove. No error. */ | |
3729 | val = 0; | |
3730 | } | |
c906108c | 3731 | } |
879d1e6b | 3732 | |
08351840 PA |
3733 | /* In some cases, we might not be able to remove a breakpoint in |
3734 | a shared library that has already been removed, but we have | |
3735 | not yet processed the shlib unload event. Similarly for an | |
3736 | unloaded add-symbol-file object - the user might not yet have | |
3737 | had the chance to remove-symbol-file it. shlib_disabled will | |
3738 | be set if the library/object has already been removed, but | |
3739 | the breakpoint hasn't been uninserted yet, e.g., after | |
3740 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3741 | always-inserted mode. */ | |
076855f9 | 3742 | if (val |
08351840 PA |
3743 | && (bl->loc_type == bp_loc_software_breakpoint |
3744 | && (bl->shlib_disabled | |
3745 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3746 | || shared_objfile_contains_address_p (bl->pspace, |
3747 | bl->address)))) | |
879d1e6b UW |
3748 | val = 0; |
3749 | ||
c906108c SS |
3750 | if (val) |
3751 | return val; | |
b2b6a7da | 3752 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3753 | } |
35df4500 | 3754 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3755 | { |
77b06cd7 TJB |
3756 | gdb_assert (bl->owner->ops != NULL |
3757 | && bl->owner->ops->remove_location != NULL); | |
3758 | ||
b2b6a7da | 3759 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3760 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3761 | |
c906108c | 3762 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3763 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3764 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3765 | bl->owner->number); |
c906108c | 3766 | } |
35df4500 TJB |
3767 | else if (bl->owner->type == bp_catchpoint |
3768 | && breakpoint_enabled (bl->owner) | |
3769 | && !bl->duplicate) | |
ce78b96d | 3770 | { |
77b06cd7 TJB |
3771 | gdb_assert (bl->owner->ops != NULL |
3772 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3773 | |
73971819 | 3774 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3775 | if (val) |
3776 | return val; | |
77b06cd7 | 3777 | |
b2b6a7da | 3778 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3779 | } |
c906108c SS |
3780 | |
3781 | return 0; | |
3782 | } | |
3783 | ||
6c95b8df | 3784 | static int |
834c0d03 | 3785 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3786 | { |
35df4500 TJB |
3787 | /* BL is never in moribund_locations by our callers. */ |
3788 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3789 | |
6c95b8df PA |
3790 | /* The type of none suggests that owner is actually deleted. |
3791 | This should not ever happen. */ | |
35df4500 | 3792 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3793 | |
5ed8105e | 3794 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3795 | |
35df4500 | 3796 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3797 | |
5ed8105e | 3798 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3799 | } |
3800 | ||
c906108c SS |
3801 | /* Clear the "inserted" flag in all breakpoints. */ |
3802 | ||
25b22b0a | 3803 | void |
fba45db2 | 3804 | mark_breakpoints_out (void) |
c906108c | 3805 | { |
35df4500 | 3806 | struct bp_location *bl, **blp_tmp; |
c906108c | 3807 | |
35df4500 | 3808 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3809 | if (bl->pspace == current_program_space) |
35df4500 | 3810 | bl->inserted = 0; |
c906108c SS |
3811 | } |
3812 | ||
53a5351d JM |
3813 | /* Clear the "inserted" flag in all breakpoints and delete any |
3814 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3815 | |
3816 | Plus other such housekeeping that has to be done for breakpoints | |
3817 | between runs. | |
3818 | ||
53a5351d JM |
3819 | Note: this function gets called at the end of a run (by |
3820 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3821 | init_wait_for_inferior). */ |
c906108c SS |
3822 | |
3823 | ||
3824 | ||
3825 | void | |
fba45db2 | 3826 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3827 | { |
35df4500 | 3828 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3829 | struct program_space *pspace = current_program_space; |
c906108c | 3830 | |
50c71eaf PA |
3831 | /* If breakpoint locations are shared across processes, then there's |
3832 | nothing to do. */ | |
f5656ead | 3833 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3834 | return; |
3835 | ||
1a853c52 | 3836 | mark_breakpoints_out (); |
075f6582 | 3837 | |
35df4500 | 3838 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3839 | { |
6c95b8df PA |
3840 | if (b->loc && b->loc->pspace != pspace) |
3841 | continue; | |
3842 | ||
c5aa993b JM |
3843 | switch (b->type) |
3844 | { | |
3845 | case bp_call_dummy: | |
e2e4d78b | 3846 | case bp_longjmp_call_dummy: |
c906108c | 3847 | |
c5aa993b | 3848 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3849 | cause problems when the inferior is rerun, so we better get |
3850 | rid of it. */ | |
3851 | ||
3852 | case bp_watchpoint_scope: | |
3853 | ||
3854 | /* Also get rid of scope breakpoints. */ | |
3855 | ||
3856 | case bp_shlib_event: | |
3857 | ||
3858 | /* Also remove solib event breakpoints. Their addresses may | |
3859 | have changed since the last time we ran the program. | |
3860 | Actually we may now be debugging against different target; | |
3861 | and so the solib backend that installed this breakpoint may | |
3862 | not be used in by the target. E.g., | |
3863 | ||
3864 | (gdb) file prog-linux | |
3865 | (gdb) run # native linux target | |
3866 | ... | |
3867 | (gdb) kill | |
3868 | (gdb) file prog-win.exe | |
3869 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3870 | */ | |
c906108c | 3871 | |
f59f708a PA |
3872 | case bp_step_resume: |
3873 | ||
3874 | /* Also remove step-resume breakpoints. */ | |
3875 | ||
7c16b83e PA |
3876 | case bp_single_step: |
3877 | ||
3878 | /* Also remove single-step breakpoints. */ | |
3879 | ||
c5aa993b JM |
3880 | delete_breakpoint (b); |
3881 | break; | |
c906108c | 3882 | |
c5aa993b JM |
3883 | case bp_watchpoint: |
3884 | case bp_hardware_watchpoint: | |
3885 | case bp_read_watchpoint: | |
3886 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3887 | { |
3888 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3889 | |
3a5c3e22 PA |
3890 | /* Likewise for watchpoints on local expressions. */ |
3891 | if (w->exp_valid_block != NULL) | |
3892 | delete_breakpoint (b); | |
63000888 | 3893 | else |
3a5c3e22 | 3894 | { |
63000888 PA |
3895 | /* Get rid of existing locations, which are no longer |
3896 | valid. New ones will be created in | |
3897 | update_watchpoint, when the inferior is restarted. | |
3898 | The next update_global_location_list call will | |
3899 | garbage collect them. */ | |
3900 | b->loc = NULL; | |
3901 | ||
3902 | if (context == inf_starting) | |
3903 | { | |
3904 | /* Reset val field to force reread of starting value in | |
3905 | insert_breakpoints. */ | |
850645cf | 3906 | w->val.reset (nullptr); |
63000888 PA |
3907 | w->val_valid = 0; |
3908 | } | |
3909 | } | |
3a5c3e22 | 3910 | } |
c5aa993b JM |
3911 | break; |
3912 | default: | |
c5aa993b JM |
3913 | break; |
3914 | } | |
3915 | } | |
1c5cfe86 PA |
3916 | |
3917 | /* Get rid of the moribund locations. */ | |
1123588c | 3918 | for (bp_location *bl : moribund_locations) |
35df4500 | 3919 | decref_bp_location (&bl); |
1123588c | 3920 | moribund_locations.clear (); |
c906108c SS |
3921 | } |
3922 | ||
6c95b8df PA |
3923 | /* These functions concern about actual breakpoints inserted in the |
3924 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3925 | we need to hop over the bkpt --- so we check for address space | |
3926 | match, not program space. */ | |
3927 | ||
c2c6d25f JM |
3928 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3929 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3930 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3931 | permanent breakpoint. | |
3932 | - When continuing from a location with an ordinary breakpoint, we | |
3933 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3934 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3935 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3936 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3937 | |
c2c6d25f | 3938 | enum breakpoint_here |
accd0bcd | 3939 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3940 | { |
35df4500 | 3941 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3942 | int any_breakpoint_here = 0; |
c906108c | 3943 | |
35df4500 | 3944 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3945 | { |
35df4500 TJB |
3946 | if (bl->loc_type != bp_loc_software_breakpoint |
3947 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3948 | continue; |
3949 | ||
f1310107 | 3950 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3951 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3952 | || bl->permanent) |
f1310107 | 3953 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3954 | { |
3955 | if (overlay_debugging | |
35df4500 TJB |
3956 | && section_is_overlay (bl->section) |
3957 | && !section_is_mapped (bl->section)) | |
075f6582 | 3958 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3959 | else if (bl->permanent) |
075f6582 DJ |
3960 | return permanent_breakpoint_here; |
3961 | else | |
3962 | any_breakpoint_here = 1; | |
3963 | } | |
3964 | } | |
c906108c | 3965 | |
f486487f | 3966 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3967 | } |
3968 | ||
d35ae833 PA |
3969 | /* See breakpoint.h. */ |
3970 | ||
3971 | int | |
accd0bcd | 3972 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
3973 | CORE_ADDR addr, ULONGEST len) |
3974 | { | |
3975 | struct bp_location *bl, **blp_tmp; | |
3976 | ||
3977 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3978 | { | |
3979 | if (bl->loc_type != bp_loc_software_breakpoint | |
3980 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
3981 | continue; | |
3982 | ||
3983 | if ((breakpoint_enabled (bl->owner) | |
3984 | || bl->permanent) | |
3985 | && breakpoint_location_address_range_overlap (bl, aspace, | |
3986 | addr, len)) | |
3987 | { | |
3988 | if (overlay_debugging | |
3989 | && section_is_overlay (bl->section) | |
3990 | && !section_is_mapped (bl->section)) | |
3991 | { | |
3992 | /* Unmapped overlay -- can't be a match. */ | |
3993 | continue; | |
3994 | } | |
3995 | ||
3996 | return 1; | |
3997 | } | |
3998 | } | |
3999 | ||
4000 | return 0; | |
4001 | } | |
4002 | ||
1c5cfe86 PA |
4003 | /* Return true if there's a moribund breakpoint at PC. */ |
4004 | ||
4005 | int | |
accd0bcd | 4006 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4007 | { |
1123588c | 4008 | for (bp_location *loc : moribund_locations) |
f1310107 | 4009 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4010 | return 1; |
4011 | ||
4012 | return 0; | |
4013 | } | |
c2c6d25f | 4014 | |
f7ce857f PA |
4015 | /* Returns non-zero iff BL is inserted at PC, in address space |
4016 | ASPACE. */ | |
4017 | ||
4018 | static int | |
4019 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4020 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4021 | { |
4022 | if (bl->inserted | |
4023 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4024 | aspace, pc)) | |
4025 | { | |
4026 | if (overlay_debugging | |
4027 | && section_is_overlay (bl->section) | |
4028 | && !section_is_mapped (bl->section)) | |
4029 | return 0; /* unmapped overlay -- can't be a match */ | |
4030 | else | |
4031 | return 1; | |
4032 | } | |
4033 | return 0; | |
4034 | } | |
4035 | ||
a1fd2fa5 | 4036 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4037 | |
4038 | int | |
accd0bcd | 4039 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4040 | { |
f7ce857f | 4041 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4042 | |
f7ce857f | 4043 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4044 | { |
f7ce857f PA |
4045 | struct bp_location *bl = *blp; |
4046 | ||
35df4500 TJB |
4047 | if (bl->loc_type != bp_loc_software_breakpoint |
4048 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4049 | continue; |
4050 | ||
f7ce857f PA |
4051 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4052 | return 1; | |
c5aa993b | 4053 | } |
c36b740a VP |
4054 | return 0; |
4055 | } | |
4056 | ||
a1fd2fa5 PA |
4057 | /* This function returns non-zero iff there is a software breakpoint |
4058 | inserted at PC. */ | |
c36b740a VP |
4059 | |
4060 | int | |
accd0bcd | 4061 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4062 | CORE_ADDR pc) |
4fa8626c | 4063 | { |
f7ce857f | 4064 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4065 | |
f7ce857f | 4066 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4067 | { |
f7ce857f PA |
4068 | struct bp_location *bl = *blp; |
4069 | ||
35df4500 | 4070 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4071 | continue; |
4072 | ||
f7ce857f PA |
4073 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4074 | return 1; | |
4fa8626c DJ |
4075 | } |
4076 | ||
4077 | return 0; | |
9c02b525 PA |
4078 | } |
4079 | ||
4080 | /* See breakpoint.h. */ | |
4081 | ||
4082 | int | |
accd0bcd | 4083 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4084 | CORE_ADDR pc) |
4085 | { | |
4086 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4087 | |
4088 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4089 | { | |
4090 | struct bp_location *bl = *blp; | |
4091 | ||
4092 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4093 | continue; | |
4094 | ||
4095 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4096 | return 1; | |
4097 | } | |
4098 | ||
4099 | return 0; | |
4fa8626c DJ |
4100 | } |
4101 | ||
9093389c | 4102 | int |
accd0bcd | 4103 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4104 | CORE_ADDR addr, ULONGEST len) |
4105 | { | |
4106 | struct breakpoint *bpt; | |
4107 | ||
4108 | ALL_BREAKPOINTS (bpt) | |
4109 | { | |
4110 | struct bp_location *loc; | |
4111 | ||
4112 | if (bpt->type != bp_hardware_watchpoint | |
4113 | && bpt->type != bp_access_watchpoint) | |
4114 | continue; | |
4115 | ||
4116 | if (!breakpoint_enabled (bpt)) | |
4117 | continue; | |
4118 | ||
4119 | for (loc = bpt->loc; loc; loc = loc->next) | |
4120 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4121 | { | |
4122 | CORE_ADDR l, h; | |
4123 | ||
4124 | /* Check for intersection. */ | |
768adc05 PA |
4125 | l = std::max<CORE_ADDR> (loc->address, addr); |
4126 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4127 | if (l < h) |
4128 | return 1; | |
4129 | } | |
4130 | } | |
4131 | return 0; | |
4132 | } | |
c906108c | 4133 | \f |
c5aa993b | 4134 | |
c906108c SS |
4135 | /* bpstat stuff. External routines' interfaces are documented |
4136 | in breakpoint.h. */ | |
4137 | ||
4138 | int | |
c326b90e | 4139 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4140 | { |
533be4dd | 4141 | return (ep->type == bp_catchpoint); |
c906108c SS |
4142 | } |
4143 | ||
f431efe5 PA |
4144 | /* Frees any storage that is part of a bpstat. Does not walk the |
4145 | 'next' chain. */ | |
4146 | ||
04afa70c | 4147 | bpstats::~bpstats () |
198757a8 | 4148 | { |
04afa70c TT |
4149 | if (bp_location_at != NULL) |
4150 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4151 | } |
4152 | ||
c906108c SS |
4153 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4154 | Also free any storage that is part of a bpstat. */ | |
4155 | ||
4156 | void | |
fba45db2 | 4157 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4158 | { |
4159 | bpstat p; | |
4160 | bpstat q; | |
4161 | ||
4162 | if (bsp == 0) | |
4163 | return; | |
4164 | p = *bsp; | |
4165 | while (p != NULL) | |
4166 | { | |
4167 | q = p->next; | |
04afa70c | 4168 | delete p; |
c906108c SS |
4169 | p = q; |
4170 | } | |
4171 | *bsp = NULL; | |
4172 | } | |
4173 | ||
04afa70c TT |
4174 | bpstats::bpstats (const bpstats &other) |
4175 | : next (NULL), | |
4176 | bp_location_at (other.bp_location_at), | |
4177 | breakpoint_at (other.breakpoint_at), | |
4178 | commands (other.commands), | |
04afa70c TT |
4179 | print (other.print), |
4180 | stop (other.stop), | |
4181 | print_it (other.print_it) | |
4182 | { | |
850645cf TT |
4183 | if (other.old_val != NULL) |
4184 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4185 | incref_bp_location (bp_location_at); |
04afa70c TT |
4186 | } |
4187 | ||
c906108c SS |
4188 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4189 | is part of the bpstat is copied as well. */ | |
4190 | ||
4191 | bpstat | |
fba45db2 | 4192 | bpstat_copy (bpstat bs) |
c906108c SS |
4193 | { |
4194 | bpstat p = NULL; | |
4195 | bpstat tmp; | |
4196 | bpstat retval = NULL; | |
4197 | ||
4198 | if (bs == NULL) | |
4199 | return bs; | |
4200 | ||
4201 | for (; bs != NULL; bs = bs->next) | |
4202 | { | |
04afa70c | 4203 | tmp = new bpstats (*bs); |
31cc81e9 | 4204 | |
c906108c SS |
4205 | if (p == NULL) |
4206 | /* This is the first thing in the chain. */ | |
4207 | retval = tmp; | |
4208 | else | |
4209 | p->next = tmp; | |
4210 | p = tmp; | |
4211 | } | |
4212 | p->next = NULL; | |
4213 | return retval; | |
4214 | } | |
4215 | ||
4a64f543 | 4216 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4217 | |
4218 | bpstat | |
fba45db2 | 4219 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4220 | { |
c5aa993b JM |
4221 | if (bsp == NULL) |
4222 | return NULL; | |
c906108c | 4223 | |
c5aa993b JM |
4224 | for (; bsp != NULL; bsp = bsp->next) |
4225 | { | |
f431efe5 | 4226 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4227 | return bsp; |
4228 | } | |
c906108c SS |
4229 | return NULL; |
4230 | } | |
4231 | ||
ab04a2af TT |
4232 | /* See breakpoint.h. */ |
4233 | ||
47591c29 | 4234 | int |
427cd150 | 4235 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4236 | { |
ab04a2af TT |
4237 | for (; bsp != NULL; bsp = bsp->next) |
4238 | { | |
427cd150 TT |
4239 | if (bsp->breakpoint_at == NULL) |
4240 | { | |
4241 | /* A moribund location can never explain a signal other than | |
4242 | GDB_SIGNAL_TRAP. */ | |
4243 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4244 | return 1; |
427cd150 TT |
4245 | } |
4246 | else | |
47591c29 PA |
4247 | { |
4248 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4249 | sig)) | |
4250 | return 1; | |
4251 | } | |
ab04a2af TT |
4252 | } |
4253 | ||
47591c29 | 4254 | return 0; |
ab04a2af TT |
4255 | } |
4256 | ||
4a64f543 MS |
4257 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4258 | stopped at. *BSP upon return is a bpstat which points to the | |
4259 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4260 | good for anything but further calls to bpstat_num). | |
4261 | ||
8671a17b PA |
4262 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4263 | Return -1 if stopped at a breakpoint that has been deleted since | |
4264 | we set it. | |
4265 | Return 1 otherwise. */ | |
c906108c SS |
4266 | |
4267 | int | |
8671a17b | 4268 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4269 | { |
4270 | struct breakpoint *b; | |
4271 | ||
4272 | if ((*bsp) == NULL) | |
4273 | return 0; /* No more breakpoint values */ | |
8671a17b | 4274 | |
4a64f543 MS |
4275 | /* We assume we'll never have several bpstats that correspond to a |
4276 | single breakpoint -- otherwise, this function might return the | |
4277 | same number more than once and this will look ugly. */ | |
f431efe5 | 4278 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4279 | *bsp = (*bsp)->next; |
4280 | if (b == NULL) | |
4281 | return -1; /* breakpoint that's been deleted since */ | |
4282 | ||
4283 | *num = b->number; /* We have its number */ | |
4284 | return 1; | |
c906108c SS |
4285 | } |
4286 | ||
e93ca019 | 4287 | /* See breakpoint.h. */ |
c906108c SS |
4288 | |
4289 | void | |
e93ca019 | 4290 | bpstat_clear_actions (void) |
c906108c | 4291 | { |
e93ca019 JK |
4292 | bpstat bs; |
4293 | ||
00431a78 | 4294 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4295 | return; |
4296 | ||
00431a78 | 4297 | thread_info *tp = inferior_thread (); |
e93ca019 | 4298 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4299 | { |
d1b0a7bf | 4300 | bs->commands = NULL; |
850645cf | 4301 | bs->old_val.reset (nullptr); |
c906108c SS |
4302 | } |
4303 | } | |
4304 | ||
f3b1572e PA |
4305 | /* Called when a command is about to proceed the inferior. */ |
4306 | ||
4307 | static void | |
4308 | breakpoint_about_to_proceed (void) | |
4309 | { | |
d7e15655 | 4310 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4311 | { |
4312 | struct thread_info *tp = inferior_thread (); | |
4313 | ||
4314 | /* Allow inferior function calls in breakpoint commands to not | |
4315 | interrupt the command list. When the call finishes | |
4316 | successfully, the inferior will be standing at the same | |
4317 | breakpoint as if nothing happened. */ | |
16c381f0 | 4318 | if (tp->control.in_infcall) |
f3b1572e PA |
4319 | return; |
4320 | } | |
4321 | ||
4322 | breakpoint_proceeded = 1; | |
4323 | } | |
4324 | ||
abf85f46 JK |
4325 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4326 | or its equivalent. */ | |
4327 | ||
4328 | static int | |
4329 | command_line_is_silent (struct command_line *cmd) | |
4330 | { | |
4f45d445 | 4331 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4332 | } |
4333 | ||
4a64f543 MS |
4334 | /* Execute all the commands associated with all the breakpoints at |
4335 | this location. Any of these commands could cause the process to | |
4336 | proceed beyond this point, etc. We look out for such changes by | |
4337 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4338 | |
347bddb7 PA |
4339 | Returns true if a breakpoint command resumed the inferior. In that |
4340 | case, it is the caller's responsibility to recall it again with the | |
4341 | bpstat of the current thread. */ | |
4342 | ||
4343 | static int | |
4344 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4345 | { |
4346 | bpstat bs; | |
347bddb7 | 4347 | int again = 0; |
c906108c SS |
4348 | |
4349 | /* Avoid endless recursion if a `source' command is contained | |
4350 | in bs->commands. */ | |
4351 | if (executing_breakpoint_commands) | |
347bddb7 | 4352 | return 0; |
c906108c | 4353 | |
81b1e71c TT |
4354 | scoped_restore save_executing |
4355 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4356 | |
1ac32117 | 4357 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4358 | |
4a64f543 | 4359 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4360 | bs = *bsp; |
4361 | ||
4362 | breakpoint_proceeded = 0; | |
4363 | for (; bs != NULL; bs = bs->next) | |
4364 | { | |
d1b0a7bf | 4365 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4366 | |
4367 | /* Take ownership of the BSP's command tree, if it has one. | |
4368 | ||
4369 | The command tree could legitimately contain commands like | |
4370 | 'step' and 'next', which call clear_proceed_status, which | |
4371 | frees stop_bpstat's command tree. To make sure this doesn't | |
4372 | free the tree we're executing out from under us, we need to | |
4373 | take ownership of the tree ourselves. Since a given bpstat's | |
4374 | commands are only executed once, we don't need to copy it; we | |
4375 | can clear the pointer in the bpstat, and make sure we free | |
4376 | the tree when we're done. */ | |
d1b0a7bf | 4377 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4378 | bs->commands = NULL; |
d1b0a7bf TT |
4379 | if (ccmd != NULL) |
4380 | cmd = ccmd.get (); | |
abf85f46 JK |
4381 | if (command_line_is_silent (cmd)) |
4382 | { | |
4383 | /* The action has been already done by bpstat_stop_status. */ | |
4384 | cmd = cmd->next; | |
4385 | } | |
6c50ab1c | 4386 | |
c906108c SS |
4387 | while (cmd != NULL) |
4388 | { | |
4389 | execute_control_command (cmd); | |
4390 | ||
4391 | if (breakpoint_proceeded) | |
4392 | break; | |
4393 | else | |
4394 | cmd = cmd->next; | |
4395 | } | |
6c50ab1c | 4396 | |
c906108c | 4397 | if (breakpoint_proceeded) |
32c1e744 | 4398 | { |
cb814510 | 4399 | if (current_ui->async) |
347bddb7 PA |
4400 | /* If we are in async mode, then the target might be still |
4401 | running, not stopped at any breakpoint, so nothing for | |
4402 | us to do here -- just return to the event loop. */ | |
4403 | ; | |
32c1e744 VP |
4404 | else |
4405 | /* In sync mode, when execute_control_command returns | |
4406 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4407 | Breakpoint commands for that stop were not run, since |
4408 | execute_command does not run breakpoint commands -- | |
4409 | only command_line_handler does, but that one is not | |
4410 | involved in execution of breakpoint commands. So, we | |
4411 | can now execute breakpoint commands. It should be | |
4412 | noted that making execute_command do bpstat actions is | |
4413 | not an option -- in this case we'll have recursive | |
4414 | invocation of bpstat for each breakpoint with a | |
4415 | command, and can easily blow up GDB stack. Instead, we | |
4416 | return true, which will trigger the caller to recall us | |
4417 | with the new stop_bpstat. */ | |
4418 | again = 1; | |
4419 | break; | |
32c1e744 | 4420 | } |
c906108c | 4421 | } |
347bddb7 PA |
4422 | return again; |
4423 | } | |
4424 | ||
00431a78 PA |
4425 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4426 | one, is alive and has execution. Return NULL otherwise. */ | |
4427 | ||
4428 | static thread_info * | |
4429 | get_bpstat_thread () | |
4430 | { | |
4431 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4432 | return NULL; | |
4433 | ||
4434 | thread_info *tp = inferior_thread (); | |
4435 | if (tp->state == THREAD_EXITED || tp->executing) | |
4436 | return NULL; | |
4437 | return tp; | |
4438 | } | |
4439 | ||
347bddb7 PA |
4440 | void |
4441 | bpstat_do_actions (void) | |
4442 | { | |
694c6bf5 | 4443 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4444 | thread_info *tp; |
353d1d73 | 4445 | |
347bddb7 | 4446 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4447 | while ((tp = get_bpstat_thread ()) != NULL) |
4448 | { | |
4449 | /* Since in sync mode, bpstat_do_actions may resume the | |
4450 | inferior, and only return when it is stopped at the next | |
4451 | breakpoint, we keep doing breakpoint actions until it returns | |
4452 | false to indicate the inferior was not resumed. */ | |
4453 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4454 | break; | |
4455 | } | |
353d1d73 | 4456 | |
694c6bf5 | 4457 | cleanup_if_error.release (); |
c906108c SS |
4458 | } |
4459 | ||
fa4727a6 DJ |
4460 | /* Print out the (old or new) value associated with a watchpoint. */ |
4461 | ||
4462 | static void | |
4463 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4464 | { | |
4465 | if (val == NULL) | |
4466 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4467 | else | |
79a45b7d TT |
4468 | { |
4469 | struct value_print_options opts; | |
4470 | get_user_print_options (&opts); | |
4471 | value_print (val, stream, &opts); | |
4472 | } | |
fa4727a6 DJ |
4473 | } |
4474 | ||
f303dbd6 PA |
4475 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4476 | debugging multiple threads. */ | |
4477 | ||
4478 | void | |
4479 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4480 | { | |
112e8700 | 4481 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4482 | return; |
4483 | ||
112e8700 | 4484 | uiout->text ("\n"); |
f303dbd6 PA |
4485 | |
4486 | if (show_thread_that_caused_stop ()) | |
4487 | { | |
4488 | const char *name; | |
4489 | struct thread_info *thr = inferior_thread (); | |
4490 | ||
112e8700 SM |
4491 | uiout->text ("Thread "); |
4492 | uiout->field_fmt ("thread-id", "%s", print_thread_id (thr)); | |
f303dbd6 PA |
4493 | |
4494 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4495 | if (name != NULL) | |
4496 | { | |
112e8700 SM |
4497 | uiout->text (" \""); |
4498 | uiout->field_fmt ("name", "%s", name); | |
4499 | uiout->text ("\""); | |
f303dbd6 PA |
4500 | } |
4501 | ||
112e8700 | 4502 | uiout->text (" hit "); |
f303dbd6 PA |
4503 | } |
4504 | } | |
4505 | ||
e514a9d6 | 4506 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4507 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4508 | 'print_it' in the bpstat structure. Under some circumstances we |
4509 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4510 | normal_stop(). */ |
e514a9d6 JM |
4511 | |
4512 | static enum print_stop_action | |
4513 | print_bp_stop_message (bpstat bs) | |
4514 | { | |
4515 | switch (bs->print_it) | |
4516 | { | |
4517 | case print_it_noop: | |
4a64f543 | 4518 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4519 | return PRINT_UNKNOWN; |
4520 | break; | |
4521 | ||
4522 | case print_it_done: | |
4523 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4524 | relevant messages. */ |
e514a9d6 JM |
4525 | return PRINT_SRC_AND_LOC; |
4526 | break; | |
4527 | ||
4528 | case print_it_normal: | |
4f8d1dc6 | 4529 | { |
f431efe5 PA |
4530 | struct breakpoint *b = bs->breakpoint_at; |
4531 | ||
1a6a67de TJB |
4532 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4533 | which has since been deleted. */ | |
4534 | if (b == NULL) | |
4535 | return PRINT_UNKNOWN; | |
4536 | ||
348d480f PA |
4537 | /* Normal case. Call the breakpoint's print_it method. */ |
4538 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4539 | } |
348d480f | 4540 | break; |
3086aeae | 4541 | |
e514a9d6 | 4542 | default: |
8e65ff28 | 4543 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4544 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4545 | break; |
c906108c | 4546 | } |
c906108c SS |
4547 | } |
4548 | ||
edcc5120 TT |
4549 | /* A helper function that prints a shared library stopped event. */ |
4550 | ||
4551 | static void | |
4552 | print_solib_event (int is_catchpoint) | |
4553 | { | |
6fb16ce6 | 4554 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4555 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4556 | |
4557 | if (!is_catchpoint) | |
4558 | { | |
4559 | if (any_added || any_deleted) | |
112e8700 | 4560 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4561 | else |
112e8700 SM |
4562 | current_uiout->text (_("Stopped due to shared library event (no " |
4563 | "libraries added or removed)\n")); | |
edcc5120 TT |
4564 | } |
4565 | ||
112e8700 SM |
4566 | if (current_uiout->is_mi_like_p ()) |
4567 | current_uiout->field_string ("reason", | |
4568 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4569 | |
4570 | if (any_deleted) | |
4571 | { | |
112e8700 | 4572 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4573 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4574 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4575 | { |
6fb16ce6 SM |
4576 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4577 | ||
edcc5120 | 4578 | if (ix > 0) |
112e8700 SM |
4579 | current_uiout->text (" "); |
4580 | current_uiout->field_string ("library", name); | |
4581 | current_uiout->text ("\n"); | |
edcc5120 | 4582 | } |
edcc5120 TT |
4583 | } |
4584 | ||
4585 | if (any_added) | |
4586 | { | |
112e8700 | 4587 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4588 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4589 | bool first = true; |
52941706 | 4590 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4591 | { |
bcb430e4 | 4592 | if (!first) |
112e8700 | 4593 | current_uiout->text (" "); |
bcb430e4 | 4594 | first = false; |
112e8700 SM |
4595 | current_uiout->field_string ("library", iter->so_name); |
4596 | current_uiout->text ("\n"); | |
edcc5120 | 4597 | } |
edcc5120 TT |
4598 | } |
4599 | } | |
4600 | ||
e514a9d6 JM |
4601 | /* Print a message indicating what happened. This is called from |
4602 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4603 | list - a list of the eventpoints that caused this stop. KIND is |
4604 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4605 | routine calls the generic print routine for printing a message |
4606 | about reasons for stopping. This will print (for example) the | |
4607 | "Breakpoint n," part of the output. The return value of this | |
4608 | routine is one of: | |
c906108c | 4609 | |
4a64f543 | 4610 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4611 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4612 | code to print the location. An example is |
c5aa993b JM |
4613 | "Breakpoint 1, " which should be followed by |
4614 | the location. | |
917317f4 | 4615 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4616 | to also print the location part of the message. |
4617 | An example is the catch/throw messages, which | |
4a64f543 | 4618 | don't require a location appended to the end. |
917317f4 | 4619 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4620 | further info to be printed. */ |
c906108c | 4621 | |
917317f4 | 4622 | enum print_stop_action |
36dfb11c | 4623 | bpstat_print (bpstat bs, int kind) |
c906108c | 4624 | { |
f486487f | 4625 | enum print_stop_action val; |
c5aa993b | 4626 | |
c906108c | 4627 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4628 | (Currently all watchpoints go on the bpstat whether hit or not. |
4629 | That probably could (should) be changed, provided care is taken | |
c906108c | 4630 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4631 | for (; bs; bs = bs->next) |
4632 | { | |
4633 | val = print_bp_stop_message (bs); | |
4634 | if (val == PRINT_SRC_ONLY | |
4635 | || val == PRINT_SRC_AND_LOC | |
4636 | || val == PRINT_NOTHING) | |
4637 | return val; | |
4638 | } | |
c906108c | 4639 | |
36dfb11c TT |
4640 | /* If we had hit a shared library event breakpoint, |
4641 | print_bp_stop_message would print out this message. If we hit an | |
4642 | OS-level shared library event, do the same thing. */ | |
4643 | if (kind == TARGET_WAITKIND_LOADED) | |
4644 | { | |
edcc5120 | 4645 | print_solib_event (0); |
36dfb11c TT |
4646 | return PRINT_NOTHING; |
4647 | } | |
4648 | ||
e514a9d6 | 4649 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4650 | with and nothing was printed. */ |
917317f4 | 4651 | return PRINT_UNKNOWN; |
c906108c SS |
4652 | } |
4653 | ||
bf469271 | 4654 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4655 | |
bf469271 PA |
4656 | static bool |
4657 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4658 | { |
278cd55f | 4659 | struct value *mark = value_mark (); |
bf469271 | 4660 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4661 | |
c906108c | 4662 | value_free_to_mark (mark); |
bf469271 | 4663 | return res; |
c906108c SS |
4664 | } |
4665 | ||
5760d0ab | 4666 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4667 | |
04afa70c TT |
4668 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4669 | : next (NULL), | |
4670 | bp_location_at (bl), | |
4671 | breakpoint_at (bl->owner), | |
4672 | commands (NULL), | |
04afa70c TT |
4673 | print (0), |
4674 | stop (0), | |
4675 | print_it (print_it_normal) | |
c906108c | 4676 | { |
f431efe5 | 4677 | incref_bp_location (bl); |
04afa70c TT |
4678 | **bs_link_pointer = this; |
4679 | *bs_link_pointer = &next; | |
4680 | } | |
4681 | ||
4682 | bpstats::bpstats () | |
4683 | : next (NULL), | |
4684 | bp_location_at (NULL), | |
4685 | breakpoint_at (NULL), | |
4686 | commands (NULL), | |
04afa70c TT |
4687 | print (0), |
4688 | stop (0), | |
4689 | print_it (print_it_normal) | |
4690 | { | |
c906108c SS |
4691 | } |
4692 | \f | |
d983da9c DJ |
4693 | /* The target has stopped with waitstatus WS. Check if any hardware |
4694 | watchpoints have triggered, according to the target. */ | |
4695 | ||
4696 | int | |
4697 | watchpoints_triggered (struct target_waitstatus *ws) | |
4698 | { | |
57810aa7 | 4699 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4700 | CORE_ADDR addr; |
4701 | struct breakpoint *b; | |
4702 | ||
4703 | if (!stopped_by_watchpoint) | |
4704 | { | |
4705 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4706 | as not triggered. */ | |
4707 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4708 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4709 | { |
4710 | struct watchpoint *w = (struct watchpoint *) b; | |
4711 | ||
4712 | w->watchpoint_triggered = watch_triggered_no; | |
4713 | } | |
d983da9c DJ |
4714 | |
4715 | return 0; | |
4716 | } | |
4717 | ||
8b88a78e | 4718 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4719 | { |
4720 | /* We were stopped by a watchpoint, but we don't know where. | |
4721 | Mark all watchpoints as unknown. */ | |
4722 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4723 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4724 | { |
4725 | struct watchpoint *w = (struct watchpoint *) b; | |
4726 | ||
4727 | w->watchpoint_triggered = watch_triggered_unknown; | |
4728 | } | |
d983da9c | 4729 | |
3c4797ba | 4730 | return 1; |
d983da9c DJ |
4731 | } |
4732 | ||
4733 | /* The target could report the data address. Mark watchpoints | |
4734 | affected by this data address as triggered, and all others as not | |
4735 | triggered. */ | |
4736 | ||
4737 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4738 | if (is_hardware_watchpoint (b)) |
d983da9c | 4739 | { |
3a5c3e22 | 4740 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4741 | struct bp_location *loc; |
d983da9c | 4742 | |
3a5c3e22 | 4743 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4744 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4745 | { |
3a5c3e22 | 4746 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4747 | { |
3a5c3e22 PA |
4748 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4749 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4750 | |
4751 | if (newaddr == start) | |
4752 | { | |
3a5c3e22 | 4753 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4754 | break; |
4755 | } | |
4756 | } | |
4757 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4758 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4759 | addr, loc->address, |
4760 | loc->length)) | |
4761 | { | |
3a5c3e22 | 4762 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4763 | break; |
4764 | } | |
4765 | } | |
d983da9c DJ |
4766 | } |
4767 | ||
4768 | return 1; | |
4769 | } | |
4770 | ||
bf469271 PA |
4771 | /* Possible return values for watchpoint_check. */ |
4772 | enum wp_check_result | |
4773 | { | |
4774 | /* The watchpoint has been deleted. */ | |
4775 | WP_DELETED = 1, | |
4776 | ||
4777 | /* The value has changed. */ | |
4778 | WP_VALUE_CHANGED = 2, | |
4779 | ||
4780 | /* The value has not changed. */ | |
4781 | WP_VALUE_NOT_CHANGED = 3, | |
4782 | ||
4783 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4784 | WP_IGNORE = 4, | |
4785 | }; | |
c906108c SS |
4786 | |
4787 | #define BP_TEMPFLAG 1 | |
4788 | #define BP_HARDWAREFLAG 2 | |
4789 | ||
4a64f543 | 4790 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4791 | changed. */ |
553e4c11 | 4792 | |
bf469271 PA |
4793 | static wp_check_result |
4794 | watchpoint_check (bpstat bs) | |
c906108c | 4795 | { |
3a5c3e22 | 4796 | struct watchpoint *b; |
c906108c SS |
4797 | struct frame_info *fr; |
4798 | int within_current_scope; | |
4799 | ||
f431efe5 | 4800 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4801 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4802 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4803 | |
f6bc2008 PA |
4804 | /* If this is a local watchpoint, we only want to check if the |
4805 | watchpoint frame is in scope if the current thread is the thread | |
4806 | that was used to create the watchpoint. */ | |
4807 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4808 | return WP_IGNORE; |
f6bc2008 | 4809 | |
c906108c SS |
4810 | if (b->exp_valid_block == NULL) |
4811 | within_current_scope = 1; | |
4812 | else | |
4813 | { | |
edb3359d DJ |
4814 | struct frame_info *frame = get_current_frame (); |
4815 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4816 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4817 | ||
c9cf6e20 | 4818 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4819 | still in the function but the stack frame has already been |
4820 | invalidated. Since we can't rely on the values of local | |
4821 | variables after the stack has been destroyed, we are treating | |
4822 | the watchpoint in that state as `not changed' without further | |
4823 | checking. Don't mark watchpoints as changed if the current | |
4824 | frame is in an epilogue - even if they are in some other | |
4825 | frame, our view of the stack is likely to be wrong and | |
4826 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4827 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4828 | return WP_IGNORE; |
a0f49112 | 4829 | |
101dcfbe | 4830 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4831 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4832 | |
4833 | /* If we've gotten confused in the unwinder, we might have | |
4834 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4835 | if (within_current_scope) |
4836 | { | |
4837 | struct symbol *function; | |
4838 | ||
4839 | function = get_frame_function (fr); | |
4840 | if (function == NULL | |
4841 | || !contained_in (b->exp_valid_block, | |
4842 | SYMBOL_BLOCK_VALUE (function))) | |
4843 | within_current_scope = 0; | |
4844 | } | |
69fbadd5 | 4845 | |
edb3359d | 4846 | if (within_current_scope) |
c906108c SS |
4847 | /* If we end up stopping, the current frame will get selected |
4848 | in normal_stop. So this call to select_frame won't affect | |
4849 | the user. */ | |
0f7d239c | 4850 | select_frame (fr); |
c906108c | 4851 | } |
c5aa993b | 4852 | |
c906108c SS |
4853 | if (within_current_scope) |
4854 | { | |
4a64f543 MS |
4855 | /* We use value_{,free_to_}mark because it could be a *long* |
4856 | time before we return to the command level and call | |
4857 | free_all_values. We can't call free_all_values because we | |
4858 | might be in the middle of evaluating a function call. */ | |
c906108c | 4859 | |
0cf6dd15 | 4860 | int pc = 0; |
9c06b0b4 | 4861 | struct value *mark; |
fa4727a6 DJ |
4862 | struct value *new_val; |
4863 | ||
c1fc2657 | 4864 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4865 | /* Since we don't know the exact trigger address (from |
4866 | stopped_data_address), just tell the user we've triggered | |
4867 | a mask watchpoint. */ | |
4868 | return WP_VALUE_CHANGED; | |
4869 | ||
4870 | mark = value_mark (); | |
4d01a485 | 4871 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4872 | |
bb9d5f81 PP |
4873 | if (b->val_bitsize != 0) |
4874 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4875 | ||
4a64f543 MS |
4876 | /* We use value_equal_contents instead of value_equal because |
4877 | the latter coerces an array to a pointer, thus comparing just | |
4878 | the address of the array instead of its contents. This is | |
4879 | not what we want. */ | |
fa4727a6 | 4880 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4881 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4882 | new_val))) | |
c906108c | 4883 | { |
c906108c | 4884 | bs->old_val = b->val; |
850645cf | 4885 | b->val = release_value (new_val); |
fa4727a6 | 4886 | b->val_valid = 1; |
850645cf TT |
4887 | if (new_val != NULL) |
4888 | value_free_to_mark (mark); | |
c906108c SS |
4889 | return WP_VALUE_CHANGED; |
4890 | } | |
4891 | else | |
4892 | { | |
60e1c644 | 4893 | /* Nothing changed. */ |
c906108c | 4894 | value_free_to_mark (mark); |
c906108c SS |
4895 | return WP_VALUE_NOT_CHANGED; |
4896 | } | |
4897 | } | |
4898 | else | |
4899 | { | |
4900 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4901 | if we temporarily ignored the watchpoint, then when |
4902 | we reenter the block in which it is valid it contains | |
4903 | garbage (in the case of a function, it may have two | |
4904 | garbage values, one before and one after the prologue). | |
4905 | So we can't even detect the first assignment to it and | |
4906 | watch after that (since the garbage may or may not equal | |
4907 | the first value assigned). */ | |
348d480f PA |
4908 | /* We print all the stop information in |
4909 | breakpoint_ops->print_it, but in this case, by the time we | |
4910 | call breakpoint_ops->print_it this bp will be deleted | |
4911 | already. So we have no choice but print the information | |
4912 | here. */ | |
468afe6c | 4913 | |
0e454242 | 4914 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4915 | { |
4916 | struct ui_out *uiout = current_uiout; | |
4917 | ||
112e8700 SM |
4918 | if (uiout->is_mi_like_p ()) |
4919 | uiout->field_string | |
4920 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
4921 | uiout->text ("\nWatchpoint "); | |
c1fc2657 | 4922 | uiout->field_int ("wpnum", b->number); |
112e8700 | 4923 | uiout->text (" deleted because the program has left the block in\n" |
468afe6c PA |
4924 | "which its expression is valid.\n"); |
4925 | } | |
4ce44c66 | 4926 | |
cdac0397 | 4927 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4928 | b->commands = NULL; |
d0fb5eae | 4929 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4930 | |
4931 | return WP_DELETED; | |
4932 | } | |
4933 | } | |
4934 | ||
18a18393 | 4935 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4936 | breakpoint location BL. This function does not check if we should |
4937 | stop, only if BL explains the stop. */ | |
4938 | ||
18a18393 | 4939 | static int |
6c95b8df | 4940 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4941 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4942 | const struct target_waitstatus *ws) |
18a18393 VP |
4943 | { |
4944 | struct breakpoint *b = bl->owner; | |
4945 | ||
348d480f | 4946 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4947 | gdb_assert (b != NULL); |
4948 | ||
bd522513 | 4949 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4950 | } |
4951 | ||
3a5c3e22 PA |
4952 | /* Determine if the watched values have actually changed, and we |
4953 | should stop. If not, set BS->stop to 0. */ | |
4954 | ||
18a18393 VP |
4955 | static void |
4956 | bpstat_check_watchpoint (bpstat bs) | |
4957 | { | |
2bdf28a0 | 4958 | const struct bp_location *bl; |
3a5c3e22 | 4959 | struct watchpoint *b; |
2bdf28a0 JK |
4960 | |
4961 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4962 | bl = bs->bp_location_at; |
2bdf28a0 | 4963 | gdb_assert (bl != NULL); |
3a5c3e22 | 4964 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4965 | gdb_assert (b != NULL); |
18a18393 | 4966 | |
18a18393 | 4967 | { |
18a18393 VP |
4968 | int must_check_value = 0; |
4969 | ||
c1fc2657 | 4970 | if (b->type == bp_watchpoint) |
18a18393 VP |
4971 | /* For a software watchpoint, we must always check the |
4972 | watched value. */ | |
4973 | must_check_value = 1; | |
4974 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4975 | /* We have a hardware watchpoint (read, write, or access) | |
4976 | and the target earlier reported an address watched by | |
4977 | this watchpoint. */ | |
4978 | must_check_value = 1; | |
4979 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 4980 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
4981 | /* We were stopped by a hardware watchpoint, but the target could |
4982 | not report the data address. We must check the watchpoint's | |
4983 | value. Access and read watchpoints are out of luck; without | |
4984 | a data address, we can't figure it out. */ | |
4985 | must_check_value = 1; | |
3a5c3e22 | 4986 | |
18a18393 VP |
4987 | if (must_check_value) |
4988 | { | |
bf469271 PA |
4989 | wp_check_result e; |
4990 | ||
a70b8144 | 4991 | try |
bf469271 PA |
4992 | { |
4993 | e = watchpoint_check (bs); | |
4994 | } | |
230d2906 | 4995 | catch (const gdb_exception &ex) |
bf469271 PA |
4996 | { |
4997 | exception_fprintf (gdb_stderr, ex, | |
4998 | "Error evaluating expression " | |
4999 | "for watchpoint %d\n", | |
5000 | b->number); | |
5001 | ||
5002 | SWITCH_THRU_ALL_UIS () | |
5003 | { | |
5004 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5005 | b->number); | |
5006 | } | |
5007 | watchpoint_del_at_next_stop (b); | |
5008 | e = WP_DELETED; | |
5009 | } | |
bf469271 | 5010 | |
18a18393 VP |
5011 | switch (e) |
5012 | { | |
5013 | case WP_DELETED: | |
5014 | /* We've already printed what needs to be printed. */ | |
5015 | bs->print_it = print_it_done; | |
5016 | /* Stop. */ | |
5017 | break; | |
60e1c644 PA |
5018 | case WP_IGNORE: |
5019 | bs->print_it = print_it_noop; | |
5020 | bs->stop = 0; | |
5021 | break; | |
18a18393 | 5022 | case WP_VALUE_CHANGED: |
c1fc2657 | 5023 | if (b->type == bp_read_watchpoint) |
18a18393 | 5024 | { |
85d721b8 PA |
5025 | /* There are two cases to consider here: |
5026 | ||
4a64f543 | 5027 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5028 | In that case, trust the target, and always report |
5029 | the watchpoint hit to the user. Even though | |
5030 | reads don't cause value changes, the value may | |
5031 | have changed since the last time it was read, and | |
5032 | since we're not trapping writes, we will not see | |
5033 | those, and as such we should ignore our notion of | |
5034 | old value. | |
5035 | ||
4a64f543 | 5036 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5037 | reads and writes. There are two ways this may |
5038 | happen: | |
5039 | ||
4a64f543 | 5040 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5041 | reads only, but can break on accesses (reads or |
5042 | writes), such as e.g., x86. We detect this case | |
5043 | at the time we try to insert read watchpoints. | |
5044 | ||
4a64f543 | 5045 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5046 | watchpoints, but, the user set an access or write |
5047 | watchpoint watching the same memory as this read | |
5048 | watchpoint. | |
5049 | ||
5050 | If we're watching memory writes as well as reads, | |
5051 | ignore watchpoint hits when we find that the | |
5052 | value hasn't changed, as reads don't cause | |
5053 | changes. This still gives false positives when | |
5054 | the program writes the same value to memory as | |
5055 | what there was already in memory (we will confuse | |
5056 | it for a read), but it's much better than | |
5057 | nothing. */ | |
5058 | ||
5059 | int other_write_watchpoint = 0; | |
5060 | ||
5061 | if (bl->watchpoint_type == hw_read) | |
5062 | { | |
5063 | struct breakpoint *other_b; | |
5064 | ||
5065 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5066 | if (other_b->type == bp_hardware_watchpoint |
5067 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5068 | { |
3a5c3e22 PA |
5069 | struct watchpoint *other_w = |
5070 | (struct watchpoint *) other_b; | |
5071 | ||
5072 | if (other_w->watchpoint_triggered | |
5073 | == watch_triggered_yes) | |
5074 | { | |
5075 | other_write_watchpoint = 1; | |
5076 | break; | |
5077 | } | |
85d721b8 PA |
5078 | } |
5079 | } | |
5080 | ||
5081 | if (other_write_watchpoint | |
5082 | || bl->watchpoint_type == hw_access) | |
5083 | { | |
5084 | /* We're watching the same memory for writes, | |
5085 | and the value changed since the last time we | |
5086 | updated it, so this trap must be for a write. | |
5087 | Ignore it. */ | |
5088 | bs->print_it = print_it_noop; | |
5089 | bs->stop = 0; | |
5090 | } | |
18a18393 VP |
5091 | } |
5092 | break; | |
5093 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5094 | if (b->type == bp_hardware_watchpoint |
5095 | || b->type == bp_watchpoint) | |
18a18393 VP |
5096 | { |
5097 | /* Don't stop: write watchpoints shouldn't fire if | |
5098 | the value hasn't changed. */ | |
5099 | bs->print_it = print_it_noop; | |
5100 | bs->stop = 0; | |
5101 | } | |
5102 | /* Stop. */ | |
5103 | break; | |
5104 | default: | |
5105 | /* Can't happen. */ | |
18a18393 VP |
5106 | break; |
5107 | } | |
5108 | } | |
5109 | else /* must_check_value == 0 */ | |
5110 | { | |
5111 | /* This is a case where some watchpoint(s) triggered, but | |
5112 | not at the address of this watchpoint, or else no | |
5113 | watchpoint triggered after all. So don't print | |
5114 | anything for this watchpoint. */ | |
5115 | bs->print_it = print_it_noop; | |
5116 | bs->stop = 0; | |
5117 | } | |
5118 | } | |
5119 | } | |
5120 | ||
7d4df6a4 DE |
5121 | /* For breakpoints that are currently marked as telling gdb to stop, |
5122 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5123 | of breakpoint referred to by BS. If we should not stop for this |
5124 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5125 | |
18a18393 | 5126 | static void |
00431a78 | 5127 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5128 | { |
2bdf28a0 JK |
5129 | const struct bp_location *bl; |
5130 | struct breakpoint *b; | |
bf469271 PA |
5131 | /* Assume stop. */ |
5132 | bool condition_result = true; | |
7d4df6a4 DE |
5133 | struct expression *cond; |
5134 | ||
5135 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5136 | |
5137 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5138 | bl = bs->bp_location_at; |
2bdf28a0 | 5139 | gdb_assert (bl != NULL); |
f431efe5 | 5140 | b = bs->breakpoint_at; |
2bdf28a0 | 5141 | gdb_assert (b != NULL); |
18a18393 | 5142 | |
b775012e LM |
5143 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5144 | need to do so again since GDB does not know if we stopped due to a | |
5145 | breakpoint or a single step breakpoint. */ | |
5146 | ||
18a18393 | 5147 | if (frame_id_p (b->frame_id) |
edb3359d | 5148 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5149 | { |
7d4df6a4 DE |
5150 | bs->stop = 0; |
5151 | return; | |
5152 | } | |
60e1c644 | 5153 | |
12ab52e9 PA |
5154 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5155 | evaluating the condition if this isn't the specified | |
5156 | thread/task. */ | |
00431a78 PA |
5157 | if ((b->thread != -1 && b->thread != thread->global_num) |
5158 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5159 | { |
5160 | bs->stop = 0; | |
5161 | return; | |
5162 | } | |
5163 | ||
6dddc817 DE |
5164 | /* Evaluate extension language breakpoints that have a "stop" method |
5165 | implemented. */ | |
5166 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5167 | |
7d4df6a4 DE |
5168 | if (is_watchpoint (b)) |
5169 | { | |
5170 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5171 | |
4d01a485 | 5172 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5173 | } |
5174 | else | |
4d01a485 | 5175 | cond = bl->cond.get (); |
60e1c644 | 5176 | |
7d4df6a4 DE |
5177 | if (cond && b->disposition != disp_del_at_next_stop) |
5178 | { | |
5179 | int within_current_scope = 1; | |
5180 | struct watchpoint * w; | |
60e1c644 | 5181 | |
7d4df6a4 DE |
5182 | /* We use value_mark and value_free_to_mark because it could |
5183 | be a long time before we return to the command level and | |
5184 | call free_all_values. We can't call free_all_values | |
5185 | because we might be in the middle of evaluating a | |
5186 | function call. */ | |
5187 | struct value *mark = value_mark (); | |
5188 | ||
5189 | if (is_watchpoint (b)) | |
5190 | w = (struct watchpoint *) b; | |
5191 | else | |
5192 | w = NULL; | |
5193 | ||
5194 | /* Need to select the frame, with all that implies so that | |
5195 | the conditions will have the right context. Because we | |
5196 | use the frame, we will not see an inlined function's | |
5197 | variables when we arrive at a breakpoint at the start | |
5198 | of the inlined function; the current frame will be the | |
5199 | call site. */ | |
5200 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5201 | select_frame (get_current_frame ()); | |
5202 | else | |
18a18393 | 5203 | { |
7d4df6a4 DE |
5204 | struct frame_info *frame; |
5205 | ||
5206 | /* For local watchpoint expressions, which particular | |
5207 | instance of a local is being watched matters, so we | |
5208 | keep track of the frame to evaluate the expression | |
5209 | in. To evaluate the condition however, it doesn't | |
5210 | really matter which instantiation of the function | |
5211 | where the condition makes sense triggers the | |
5212 | watchpoint. This allows an expression like "watch | |
5213 | global if q > 10" set in `func', catch writes to | |
5214 | global on all threads that call `func', or catch | |
5215 | writes on all recursive calls of `func' by a single | |
5216 | thread. We simply always evaluate the condition in | |
5217 | the innermost frame that's executing where it makes | |
5218 | sense to evaluate the condition. It seems | |
5219 | intuitive. */ | |
5220 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5221 | if (frame != NULL) | |
5222 | select_frame (frame); | |
5223 | else | |
5224 | within_current_scope = 0; | |
18a18393 | 5225 | } |
7d4df6a4 | 5226 | if (within_current_scope) |
bf469271 | 5227 | { |
a70b8144 | 5228 | try |
bf469271 PA |
5229 | { |
5230 | condition_result = breakpoint_cond_eval (cond); | |
5231 | } | |
230d2906 | 5232 | catch (const gdb_exception &ex) |
bf469271 PA |
5233 | { |
5234 | exception_fprintf (gdb_stderr, ex, | |
5235 | "Error in testing breakpoint condition:\n"); | |
5236 | } | |
bf469271 | 5237 | } |
7d4df6a4 | 5238 | else |
18a18393 | 5239 | { |
7d4df6a4 DE |
5240 | warning (_("Watchpoint condition cannot be tested " |
5241 | "in the current scope")); | |
5242 | /* If we failed to set the right context for this | |
5243 | watchpoint, unconditionally report it. */ | |
18a18393 | 5244 | } |
7d4df6a4 DE |
5245 | /* FIXME-someday, should give breakpoint #. */ |
5246 | value_free_to_mark (mark); | |
18a18393 | 5247 | } |
7d4df6a4 | 5248 | |
bf469271 | 5249 | if (cond && !condition_result) |
7d4df6a4 DE |
5250 | { |
5251 | bs->stop = 0; | |
5252 | } | |
7d4df6a4 DE |
5253 | else if (b->ignore_count > 0) |
5254 | { | |
5255 | b->ignore_count--; | |
5256 | bs->stop = 0; | |
5257 | /* Increase the hit count even though we don't stop. */ | |
5258 | ++(b->hit_count); | |
76727919 | 5259 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5260 | } |
18a18393 VP |
5261 | } |
5262 | ||
1cf4d951 PA |
5263 | /* Returns true if we need to track moribund locations of LOC's type |
5264 | on the current target. */ | |
5265 | ||
5266 | static int | |
5267 | need_moribund_for_location_type (struct bp_location *loc) | |
5268 | { | |
5269 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5270 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5271 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5272 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5273 | } | |
5274 | ||
ddfe970e | 5275 | /* See breakpoint.h. */ |
c906108c SS |
5276 | |
5277 | bpstat | |
ddfe970e | 5278 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5279 | const struct target_waitstatus *ws) |
c906108c | 5280 | { |
ddfe970e | 5281 | struct breakpoint *b; |
5760d0ab | 5282 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5283 | |
429374b8 JK |
5284 | ALL_BREAKPOINTS (b) |
5285 | { | |
1a853c52 | 5286 | if (!breakpoint_enabled (b)) |
429374b8 | 5287 | continue; |
a5606eee | 5288 | |
ddfe970e | 5289 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5290 | { |
4a64f543 MS |
5291 | /* For hardware watchpoints, we look only at the first |
5292 | location. The watchpoint_check function will work on the | |
5293 | entire expression, not the individual locations. For | |
5294 | read watchpoints, the watchpoints_triggered function has | |
5295 | checked all locations already. */ | |
429374b8 JK |
5296 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5297 | break; | |
18a18393 | 5298 | |
f6592439 | 5299 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5300 | continue; |
c5aa993b | 5301 | |
09ac7c10 | 5302 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5303 | continue; |
c5aa993b | 5304 | |
4a64f543 MS |
5305 | /* Come here if it's a watchpoint, or if the break address |
5306 | matches. */ | |
c5aa993b | 5307 | |
ddfe970e KS |
5308 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5309 | explain stop. */ | |
c5aa993b | 5310 | |
f431efe5 PA |
5311 | /* Assume we stop. Should we find a watchpoint that is not |
5312 | actually triggered, or if the condition of the breakpoint | |
5313 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5314 | bs->stop = 1; |
5315 | bs->print = 1; | |
d983da9c | 5316 | |
f431efe5 PA |
5317 | /* If this is a scope breakpoint, mark the associated |
5318 | watchpoint as triggered so that we will handle the | |
5319 | out-of-scope event. We'll get to the watchpoint next | |
5320 | iteration. */ | |
d0fb5eae | 5321 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5322 | { |
5323 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5324 | ||
5325 | w->watchpoint_triggered = watch_triggered_yes; | |
5326 | } | |
f431efe5 PA |
5327 | } |
5328 | } | |
5329 | ||
7c16b83e | 5330 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5331 | if (!target_supports_stopped_by_sw_breakpoint () |
5332 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5333 | { |
1123588c | 5334 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5335 | { |
1cf4d951 PA |
5336 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5337 | && need_moribund_for_location_type (loc)) | |
5338 | { | |
ddfe970e | 5339 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5340 | /* For hits of moribund locations, we should just proceed. */ |
5341 | bs->stop = 0; | |
5342 | bs->print = 0; | |
5343 | bs->print_it = print_it_noop; | |
5344 | } | |
f431efe5 PA |
5345 | } |
5346 | } | |
5347 | ||
ddfe970e KS |
5348 | return bs_head; |
5349 | } | |
5350 | ||
5351 | /* See breakpoint.h. */ | |
5352 | ||
5353 | bpstat | |
5354 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5355 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5356 | const struct target_waitstatus *ws, |
5357 | bpstat stop_chain) | |
5358 | { | |
5359 | struct breakpoint *b = NULL; | |
5360 | /* First item of allocated bpstat's. */ | |
5361 | bpstat bs_head = stop_chain; | |
5362 | bpstat bs; | |
5363 | int need_remove_insert; | |
5364 | int removed_any; | |
5365 | ||
5366 | /* First, build the bpstat chain with locations that explain a | |
5367 | target stop, while being careful to not set the target running, | |
5368 | as that may invalidate locations (in particular watchpoint | |
5369 | locations are recreated). Resuming will happen here with | |
5370 | breakpoint conditions or watchpoint expressions that include | |
5371 | inferior function calls. */ | |
5372 | if (bs_head == NULL) | |
5373 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5374 | ||
edcc5120 TT |
5375 | /* A bit of special processing for shlib breakpoints. We need to |
5376 | process solib loading here, so that the lists of loaded and | |
5377 | unloaded libraries are correct before we handle "catch load" and | |
5378 | "catch unload". */ | |
5379 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5380 | { | |
5d268276 | 5381 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5382 | { |
5383 | handle_solib_event (); | |
5384 | break; | |
5385 | } | |
5386 | } | |
5387 | ||
f431efe5 PA |
5388 | /* Now go through the locations that caused the target to stop, and |
5389 | check whether we're interested in reporting this stop to higher | |
5390 | layers, or whether we should resume the target transparently. */ | |
5391 | ||
5392 | removed_any = 0; | |
5393 | ||
5760d0ab | 5394 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5395 | { |
5396 | if (!bs->stop) | |
5397 | continue; | |
5398 | ||
f431efe5 | 5399 | b = bs->breakpoint_at; |
348d480f PA |
5400 | b->ops->check_status (bs); |
5401 | if (bs->stop) | |
28010a5d | 5402 | { |
00431a78 | 5403 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5404 | |
429374b8 JK |
5405 | if (bs->stop) |
5406 | { | |
5407 | ++(b->hit_count); | |
76727919 | 5408 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5409 | |
4a64f543 | 5410 | /* We will stop here. */ |
429374b8 JK |
5411 | if (b->disposition == disp_disable) |
5412 | { | |
816338b5 | 5413 | --(b->enable_count); |
1a853c52 | 5414 | if (b->enable_count <= 0) |
429374b8 | 5415 | b->enable_state = bp_disabled; |
f431efe5 | 5416 | removed_any = 1; |
429374b8 JK |
5417 | } |
5418 | if (b->silent) | |
5419 | bs->print = 0; | |
5420 | bs->commands = b->commands; | |
abf85f46 | 5421 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5422 | ? bs->commands.get () : NULL)) |
abf85f46 | 5423 | bs->print = 0; |
9d6e6e84 HZ |
5424 | |
5425 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5426 | } |
5427 | ||
348d480f | 5428 | } |
a9b3a50f PA |
5429 | |
5430 | /* Print nothing for this entry if we don't stop or don't | |
5431 | print. */ | |
5432 | if (!bs->stop || !bs->print) | |
5433 | bs->print_it = print_it_noop; | |
429374b8 | 5434 | } |
876fa593 | 5435 | |
d983da9c DJ |
5436 | /* If we aren't stopping, the value of some hardware watchpoint may |
5437 | not have changed, but the intermediate memory locations we are | |
5438 | watching may have. Don't bother if we're stopping; this will get | |
5439 | done later. */ | |
d832cb68 | 5440 | need_remove_insert = 0; |
5760d0ab JK |
5441 | if (! bpstat_causes_stop (bs_head)) |
5442 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5443 | if (!bs->stop |
f431efe5 PA |
5444 | && bs->breakpoint_at |
5445 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5446 | { |
3a5c3e22 PA |
5447 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5448 | ||
5449 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5450 | need_remove_insert = 1; |
d983da9c DJ |
5451 | } |
5452 | ||
d832cb68 | 5453 | if (need_remove_insert) |
44702360 | 5454 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5455 | else if (removed_any) |
44702360 | 5456 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5457 | |
5760d0ab | 5458 | return bs_head; |
c906108c | 5459 | } |
628fe4e4 JK |
5460 | |
5461 | static void | |
5462 | handle_jit_event (void) | |
5463 | { | |
5464 | struct frame_info *frame; | |
5465 | struct gdbarch *gdbarch; | |
5466 | ||
243a9253 PA |
5467 | if (debug_infrun) |
5468 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5469 | ||
628fe4e4 JK |
5470 | /* Switch terminal for any messages produced by |
5471 | breakpoint_re_set. */ | |
223ffa71 | 5472 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5473 | |
5474 | frame = get_current_frame (); | |
5475 | gdbarch = get_frame_arch (frame); | |
5476 | ||
5477 | jit_event_handler (gdbarch); | |
5478 | ||
223ffa71 | 5479 | target_terminal::inferior (); |
628fe4e4 JK |
5480 | } |
5481 | ||
5482 | /* Prepare WHAT final decision for infrun. */ | |
5483 | ||
5484 | /* Decide what infrun needs to do with this bpstat. */ | |
5485 | ||
c906108c | 5486 | struct bpstat_what |
0e30163f | 5487 | bpstat_what (bpstat bs_head) |
c906108c | 5488 | { |
c906108c | 5489 | struct bpstat_what retval; |
0e30163f | 5490 | bpstat bs; |
c906108c | 5491 | |
628fe4e4 | 5492 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5493 | retval.call_dummy = STOP_NONE; |
186c406b | 5494 | retval.is_longjmp = 0; |
628fe4e4 | 5495 | |
0e30163f | 5496 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5497 | { |
628fe4e4 JK |
5498 | /* Extract this BS's action. After processing each BS, we check |
5499 | if its action overrides all we've seem so far. */ | |
5500 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5501 | enum bptype bptype; | |
5502 | ||
c906108c | 5503 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5504 | { |
5505 | /* I suspect this can happen if it was a momentary | |
5506 | breakpoint which has since been deleted. */ | |
5507 | bptype = bp_none; | |
5508 | } | |
20874c92 | 5509 | else |
f431efe5 | 5510 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5511 | |
5512 | switch (bptype) | |
c906108c SS |
5513 | { |
5514 | case bp_none: | |
628fe4e4 | 5515 | break; |
c906108c SS |
5516 | case bp_breakpoint: |
5517 | case bp_hardware_breakpoint: | |
7c16b83e | 5518 | case bp_single_step: |
c906108c SS |
5519 | case bp_until: |
5520 | case bp_finish: | |
a9b3a50f | 5521 | case bp_shlib_event: |
c906108c SS |
5522 | if (bs->stop) |
5523 | { | |
5524 | if (bs->print) | |
628fe4e4 | 5525 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5526 | else |
628fe4e4 | 5527 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5528 | } |
5529 | else | |
628fe4e4 | 5530 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5531 | break; |
5532 | case bp_watchpoint: | |
5533 | case bp_hardware_watchpoint: | |
5534 | case bp_read_watchpoint: | |
5535 | case bp_access_watchpoint: | |
5536 | if (bs->stop) | |
5537 | { | |
5538 | if (bs->print) | |
628fe4e4 | 5539 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5540 | else |
628fe4e4 | 5541 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5542 | } |
5543 | else | |
628fe4e4 JK |
5544 | { |
5545 | /* There was a watchpoint, but we're not stopping. | |
5546 | This requires no further action. */ | |
5547 | } | |
c906108c SS |
5548 | break; |
5549 | case bp_longjmp: | |
e2e4d78b | 5550 | case bp_longjmp_call_dummy: |
186c406b | 5551 | case bp_exception: |
0a39bb32 PA |
5552 | if (bs->stop) |
5553 | { | |
5554 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5555 | retval.is_longjmp = bptype != bp_exception; | |
5556 | } | |
5557 | else | |
5558 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5559 | break; |
5560 | case bp_longjmp_resume: | |
186c406b | 5561 | case bp_exception_resume: |
0a39bb32 PA |
5562 | if (bs->stop) |
5563 | { | |
5564 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5565 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5566 | } | |
5567 | else | |
5568 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5569 | break; |
5570 | case bp_step_resume: | |
5571 | if (bs->stop) | |
628fe4e4 JK |
5572 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5573 | else | |
c906108c | 5574 | { |
628fe4e4 JK |
5575 | /* It is for the wrong frame. */ |
5576 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5577 | } |
c906108c | 5578 | break; |
2c03e5be PA |
5579 | case bp_hp_step_resume: |
5580 | if (bs->stop) | |
5581 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5582 | else | |
5583 | { | |
5584 | /* It is for the wrong frame. */ | |
5585 | this_action = BPSTAT_WHAT_SINGLE; | |
5586 | } | |
5587 | break; | |
c906108c | 5588 | case bp_watchpoint_scope: |
c4093a6a | 5589 | case bp_thread_event: |
1900040c | 5590 | case bp_overlay_event: |
0fd8e87f | 5591 | case bp_longjmp_master: |
aa7d318d | 5592 | case bp_std_terminate_master: |
186c406b | 5593 | case bp_exception_master: |
628fe4e4 | 5594 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5595 | break; |
ce78b96d | 5596 | case bp_catchpoint: |
c5aa993b JM |
5597 | if (bs->stop) |
5598 | { | |
5599 | if (bs->print) | |
628fe4e4 | 5600 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5601 | else |
628fe4e4 | 5602 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5603 | } |
5604 | else | |
628fe4e4 | 5605 | { |
cb1e4e32 PA |
5606 | /* Some catchpoints are implemented with breakpoints. |
5607 | For those, we need to step over the breakpoint. */ | |
5608 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5609 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5610 | } |
5611 | break; | |
628fe4e4 | 5612 | case bp_jit_event: |
628fe4e4 | 5613 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5614 | break; |
c906108c | 5615 | case bp_call_dummy: |
53a5351d JM |
5616 | /* Make sure the action is stop (silent or noisy), |
5617 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5618 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5619 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5620 | break; |
5621 | case bp_std_terminate: | |
5622 | /* Make sure the action is stop (silent or noisy), | |
5623 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5624 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5625 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5626 | break; |
1042e4c0 | 5627 | case bp_tracepoint: |
7a697b8d | 5628 | case bp_fast_tracepoint: |
0fb4aa4b | 5629 | case bp_static_tracepoint: |
1042e4c0 SS |
5630 | /* Tracepoint hits should not be reported back to GDB, and |
5631 | if one got through somehow, it should have been filtered | |
5632 | out already. */ | |
5633 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5634 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5635 | break; |
5636 | case bp_gnu_ifunc_resolver: | |
5637 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5638 | this_action = BPSTAT_WHAT_SINGLE; | |
5639 | break; | |
5640 | case bp_gnu_ifunc_resolver_return: | |
5641 | /* The breakpoint will be removed, execution will restart from the | |
5642 | PC of the former breakpoint. */ | |
5643 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5644 | break; | |
e7e0cddf SS |
5645 | |
5646 | case bp_dprintf: | |
a11cfd87 HZ |
5647 | if (bs->stop) |
5648 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5649 | else | |
5650 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5651 | break; |
5652 | ||
628fe4e4 JK |
5653 | default: |
5654 | internal_error (__FILE__, __LINE__, | |
5655 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5656 | } |
628fe4e4 | 5657 | |
325fac50 | 5658 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5659 | } |
628fe4e4 | 5660 | |
243a9253 PA |
5661 | return retval; |
5662 | } | |
628fe4e4 | 5663 | |
243a9253 PA |
5664 | void |
5665 | bpstat_run_callbacks (bpstat bs_head) | |
5666 | { | |
5667 | bpstat bs; | |
628fe4e4 | 5668 | |
0e30163f JK |
5669 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5670 | { | |
5671 | struct breakpoint *b = bs->breakpoint_at; | |
5672 | ||
5673 | if (b == NULL) | |
5674 | continue; | |
5675 | switch (b->type) | |
5676 | { | |
243a9253 PA |
5677 | case bp_jit_event: |
5678 | handle_jit_event (); | |
5679 | break; | |
0e30163f JK |
5680 | case bp_gnu_ifunc_resolver: |
5681 | gnu_ifunc_resolver_stop (b); | |
5682 | break; | |
5683 | case bp_gnu_ifunc_resolver_return: | |
5684 | gnu_ifunc_resolver_return_stop (b); | |
5685 | break; | |
5686 | } | |
5687 | } | |
c906108c SS |
5688 | } |
5689 | ||
5690 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5691 | without hardware support). This isn't related to a specific bpstat, | |
5692 | just to things like whether watchpoints are set. */ | |
5693 | ||
c5aa993b | 5694 | int |
fba45db2 | 5695 | bpstat_should_step (void) |
c906108c SS |
5696 | { |
5697 | struct breakpoint *b; | |
cc59ec59 | 5698 | |
c906108c | 5699 | ALL_BREAKPOINTS (b) |
717a8278 | 5700 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5701 | return 1; |
c906108c SS |
5702 | return 0; |
5703 | } | |
5704 | ||
67822962 PA |
5705 | int |
5706 | bpstat_causes_stop (bpstat bs) | |
5707 | { | |
5708 | for (; bs != NULL; bs = bs->next) | |
5709 | if (bs->stop) | |
5710 | return 1; | |
5711 | ||
5712 | return 0; | |
5713 | } | |
5714 | ||
c906108c | 5715 | \f |
c5aa993b | 5716 | |
170b53b2 UW |
5717 | /* Compute a string of spaces suitable to indent the next line |
5718 | so it starts at the position corresponding to the table column | |
5719 | named COL_NAME in the currently active table of UIOUT. */ | |
5720 | ||
5721 | static char * | |
5722 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5723 | { | |
5724 | static char wrap_indent[80]; | |
5725 | int i, total_width, width, align; | |
c5209615 | 5726 | const char *text; |
170b53b2 UW |
5727 | |
5728 | total_width = 0; | |
112e8700 | 5729 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5730 | { |
5731 | if (strcmp (text, col_name) == 0) | |
5732 | { | |
5733 | gdb_assert (total_width < sizeof wrap_indent); | |
5734 | memset (wrap_indent, ' ', total_width); | |
5735 | wrap_indent[total_width] = 0; | |
5736 | ||
5737 | return wrap_indent; | |
5738 | } | |
5739 | ||
5740 | total_width += width + 1; | |
5741 | } | |
5742 | ||
5743 | return NULL; | |
5744 | } | |
5745 | ||
b775012e LM |
5746 | /* Determine if the locations of this breakpoint will have their conditions |
5747 | evaluated by the target, host or a mix of both. Returns the following: | |
5748 | ||
5749 | "host": Host evals condition. | |
5750 | "host or target": Host or Target evals condition. | |
5751 | "target": Target evals condition. | |
5752 | */ | |
5753 | ||
5754 | static const char * | |
5755 | bp_condition_evaluator (struct breakpoint *b) | |
5756 | { | |
5757 | struct bp_location *bl; | |
5758 | char host_evals = 0; | |
5759 | char target_evals = 0; | |
5760 | ||
5761 | if (!b) | |
5762 | return NULL; | |
5763 | ||
5764 | if (!is_breakpoint (b)) | |
5765 | return NULL; | |
5766 | ||
5767 | if (gdb_evaluates_breakpoint_condition_p () | |
5768 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5769 | return condition_evaluation_host; | |
5770 | ||
5771 | for (bl = b->loc; bl; bl = bl->next) | |
5772 | { | |
5773 | if (bl->cond_bytecode) | |
5774 | target_evals++; | |
5775 | else | |
5776 | host_evals++; | |
5777 | } | |
5778 | ||
5779 | if (host_evals && target_evals) | |
5780 | return condition_evaluation_both; | |
5781 | else if (target_evals) | |
5782 | return condition_evaluation_target; | |
5783 | else | |
5784 | return condition_evaluation_host; | |
5785 | } | |
5786 | ||
5787 | /* Determine the breakpoint location's condition evaluator. This is | |
5788 | similar to bp_condition_evaluator, but for locations. */ | |
5789 | ||
5790 | static const char * | |
5791 | bp_location_condition_evaluator (struct bp_location *bl) | |
5792 | { | |
5793 | if (bl && !is_breakpoint (bl->owner)) | |
5794 | return NULL; | |
5795 | ||
5796 | if (gdb_evaluates_breakpoint_condition_p () | |
5797 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5798 | return condition_evaluation_host; | |
5799 | ||
5800 | if (bl && bl->cond_bytecode) | |
5801 | return condition_evaluation_target; | |
5802 | else | |
5803 | return condition_evaluation_host; | |
5804 | } | |
5805 | ||
859825b8 JK |
5806 | /* Print the LOC location out of the list of B->LOC locations. */ |
5807 | ||
170b53b2 UW |
5808 | static void |
5809 | print_breakpoint_location (struct breakpoint *b, | |
5810 | struct bp_location *loc) | |
0d381245 | 5811 | { |
79a45e25 | 5812 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5813 | |
5814 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5815 | |
859825b8 JK |
5816 | if (loc != NULL && loc->shlib_disabled) |
5817 | loc = NULL; | |
5818 | ||
6c95b8df PA |
5819 | if (loc != NULL) |
5820 | set_current_program_space (loc->pspace); | |
5821 | ||
56435ebe | 5822 | if (b->display_canonical) |
d28cd78a | 5823 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5824 | else if (loc && loc->symtab) |
0d381245 | 5825 | { |
4a27f119 KS |
5826 | const struct symbol *sym = loc->symbol; |
5827 | ||
0d381245 VP |
5828 | if (sym) |
5829 | { | |
112e8700 | 5830 | uiout->text ("in "); |
cbe56571 TT |
5831 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
5832 | ui_out_style_kind::FUNCTION); | |
112e8700 SM |
5833 | uiout->text (" "); |
5834 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5835 | uiout->text ("at "); | |
0d381245 | 5836 | } |
112e8700 | 5837 | uiout->field_string ("file", |
cbe56571 TT |
5838 | symtab_to_filename_for_display (loc->symtab), |
5839 | ui_out_style_kind::FILE); | |
112e8700 | 5840 | uiout->text (":"); |
05cba821 | 5841 | |
112e8700 SM |
5842 | if (uiout->is_mi_like_p ()) |
5843 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5844 | |
112e8700 | 5845 | uiout->field_int ("line", loc->line_number); |
0d381245 | 5846 | } |
859825b8 | 5847 | else if (loc) |
0d381245 | 5848 | { |
d7e74731 | 5849 | string_file stb; |
170b53b2 | 5850 | |
d7e74731 | 5851 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5852 | demangle, ""); |
112e8700 | 5853 | uiout->field_stream ("at", stb); |
0d381245 | 5854 | } |
859825b8 | 5855 | else |
f00aae0f | 5856 | { |
d28cd78a TT |
5857 | uiout->field_string ("pending", |
5858 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5859 | /* If extra_string is available, it could be holding a condition |
5860 | or dprintf arguments. In either case, make sure it is printed, | |
5861 | too, but only for non-MI streams. */ | |
112e8700 | 5862 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5863 | { |
5864 | if (b->type == bp_dprintf) | |
112e8700 | 5865 | uiout->text (","); |
f00aae0f | 5866 | else |
112e8700 SM |
5867 | uiout->text (" "); |
5868 | uiout->text (b->extra_string); | |
f00aae0f KS |
5869 | } |
5870 | } | |
6c95b8df | 5871 | |
b775012e LM |
5872 | if (loc && is_breakpoint (b) |
5873 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5874 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5875 | { | |
112e8700 SM |
5876 | uiout->text (" ("); |
5877 | uiout->field_string ("evaluated-by", | |
b775012e | 5878 | bp_location_condition_evaluator (loc)); |
112e8700 | 5879 | uiout->text (")"); |
b775012e | 5880 | } |
0d381245 VP |
5881 | } |
5882 | ||
269b11a2 PA |
5883 | static const char * |
5884 | bptype_string (enum bptype type) | |
c906108c | 5885 | { |
c4093a6a JM |
5886 | struct ep_type_description |
5887 | { | |
5888 | enum bptype type; | |
a121b7c1 | 5889 | const char *description; |
c4093a6a JM |
5890 | }; |
5891 | static struct ep_type_description bptypes[] = | |
c906108c | 5892 | { |
c5aa993b JM |
5893 | {bp_none, "?deleted?"}, |
5894 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5895 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5896 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5897 | {bp_until, "until"}, |
5898 | {bp_finish, "finish"}, | |
5899 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5900 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5901 | {bp_read_watchpoint, "read watchpoint"}, |
5902 | {bp_access_watchpoint, "acc watchpoint"}, | |
5903 | {bp_longjmp, "longjmp"}, | |
5904 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5905 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5906 | {bp_exception, "exception"}, |
5907 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5908 | {bp_step_resume, "step resume"}, |
2c03e5be | 5909 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5910 | {bp_watchpoint_scope, "watchpoint scope"}, |
5911 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5912 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5913 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5914 | {bp_thread_event, "thread events"}, |
1900040c | 5915 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5916 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5917 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5918 | {bp_exception_master, "exception master"}, |
ce78b96d | 5919 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5920 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5921 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5922 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5923 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5924 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5925 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5926 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5927 | }; |
269b11a2 PA |
5928 | |
5929 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5930 | || ((int) type != bptypes[(int) type].type)) | |
5931 | internal_error (__FILE__, __LINE__, | |
5932 | _("bptypes table does not describe type #%d."), | |
5933 | (int) type); | |
5934 | ||
5935 | return bptypes[(int) type].description; | |
5936 | } | |
5937 | ||
998580f1 MK |
5938 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5939 | For CLI, prefix the list with the string 'inf'. */ | |
5940 | ||
5941 | static void | |
5942 | output_thread_groups (struct ui_out *uiout, | |
5943 | const char *field_name, | |
5c632425 | 5944 | const std::vector<int> &inf_nums, |
998580f1 MK |
5945 | int mi_only) |
5946 | { | |
112e8700 | 5947 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5948 | |
5949 | /* For backward compatibility, don't display inferiors in CLI unless | |
5950 | there are several. Always display them for MI. */ | |
5951 | if (!is_mi && mi_only) | |
5952 | return; | |
5953 | ||
10f489e5 | 5954 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5955 | |
5c632425 | 5956 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5957 | { |
5958 | if (is_mi) | |
5959 | { | |
5960 | char mi_group[10]; | |
5961 | ||
5c632425 | 5962 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5963 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5964 | } |
5965 | else | |
5966 | { | |
5967 | if (i == 0) | |
112e8700 | 5968 | uiout->text (" inf "); |
998580f1 | 5969 | else |
112e8700 | 5970 | uiout->text (", "); |
998580f1 | 5971 | |
5c632425 | 5972 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
5973 | } |
5974 | } | |
998580f1 MK |
5975 | } |
5976 | ||
269b11a2 PA |
5977 | /* Print B to gdb_stdout. */ |
5978 | ||
5979 | static void | |
5980 | print_one_breakpoint_location (struct breakpoint *b, | |
5981 | struct bp_location *loc, | |
5982 | int loc_number, | |
5983 | struct bp_location **last_loc, | |
269b11a2 PA |
5984 | int allflag) |
5985 | { | |
5986 | struct command_line *l; | |
c2c6d25f | 5987 | static char bpenables[] = "nynny"; |
c906108c | 5988 | |
79a45e25 | 5989 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5990 | int header_of_multiple = 0; |
5991 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5992 | struct value_print_options opts; |
5993 | ||
5994 | get_user_print_options (&opts); | |
0d381245 VP |
5995 | |
5996 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5997 | /* See comment in print_one_breakpoint concerning treatment of |
5998 | breakpoints with single disabled location. */ | |
0d381245 VP |
5999 | if (loc == NULL |
6000 | && (b->loc != NULL | |
6001 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6002 | header_of_multiple = 1; | |
6003 | if (loc == NULL) | |
6004 | loc = b->loc; | |
6005 | ||
c4093a6a JM |
6006 | annotate_record (); |
6007 | ||
6008 | /* 1 */ | |
6009 | annotate_field (0); | |
0d381245 | 6010 | if (part_of_multiple) |
528e1572 | 6011 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6012 | else |
528e1572 | 6013 | uiout->field_int ("number", b->number); |
c4093a6a JM |
6014 | |
6015 | /* 2 */ | |
6016 | annotate_field (1); | |
0d381245 | 6017 | if (part_of_multiple) |
112e8700 | 6018 | uiout->field_skip ("type"); |
269b11a2 | 6019 | else |
112e8700 | 6020 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6021 | |
6022 | /* 3 */ | |
6023 | annotate_field (2); | |
0d381245 | 6024 | if (part_of_multiple) |
112e8700 | 6025 | uiout->field_skip ("disp"); |
0d381245 | 6026 | else |
112e8700 | 6027 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6028 | |
c4093a6a JM |
6029 | /* 4 */ |
6030 | annotate_field (3); | |
0d381245 | 6031 | if (part_of_multiple) |
112e8700 | 6032 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6033 | else |
112e8700 | 6034 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6035 | |
c4093a6a | 6036 | /* 5 and 6 */ |
3086aeae | 6037 | if (b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6038 | b->ops->print_one (b, last_loc); |
3086aeae DJ |
6039 | else |
6040 | switch (b->type) | |
6041 | { | |
6042 | case bp_none: | |
6043 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6044 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6045 | break; |
c906108c | 6046 | |
3086aeae DJ |
6047 | case bp_watchpoint: |
6048 | case bp_hardware_watchpoint: | |
6049 | case bp_read_watchpoint: | |
6050 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6051 | { |
6052 | struct watchpoint *w = (struct watchpoint *) b; | |
6053 | ||
6054 | /* Field 4, the address, is omitted (which makes the columns | |
6055 | not line up too nicely with the headers, but the effect | |
6056 | is relatively readable). */ | |
6057 | if (opts.addressprint) | |
112e8700 | 6058 | uiout->field_skip ("addr"); |
3a5c3e22 | 6059 | annotate_field (5); |
112e8700 | 6060 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6061 | } |
3086aeae DJ |
6062 | break; |
6063 | ||
3086aeae DJ |
6064 | case bp_breakpoint: |
6065 | case bp_hardware_breakpoint: | |
7c16b83e | 6066 | case bp_single_step: |
3086aeae DJ |
6067 | case bp_until: |
6068 | case bp_finish: | |
6069 | case bp_longjmp: | |
6070 | case bp_longjmp_resume: | |
e2e4d78b | 6071 | case bp_longjmp_call_dummy: |
186c406b TT |
6072 | case bp_exception: |
6073 | case bp_exception_resume: | |
3086aeae | 6074 | case bp_step_resume: |
2c03e5be | 6075 | case bp_hp_step_resume: |
3086aeae DJ |
6076 | case bp_watchpoint_scope: |
6077 | case bp_call_dummy: | |
aa7d318d | 6078 | case bp_std_terminate: |
3086aeae DJ |
6079 | case bp_shlib_event: |
6080 | case bp_thread_event: | |
6081 | case bp_overlay_event: | |
0fd8e87f | 6082 | case bp_longjmp_master: |
aa7d318d | 6083 | case bp_std_terminate_master: |
186c406b | 6084 | case bp_exception_master: |
1042e4c0 | 6085 | case bp_tracepoint: |
7a697b8d | 6086 | case bp_fast_tracepoint: |
0fb4aa4b | 6087 | case bp_static_tracepoint: |
e7e0cddf | 6088 | case bp_dprintf: |
4efc6507 | 6089 | case bp_jit_event: |
0e30163f JK |
6090 | case bp_gnu_ifunc_resolver: |
6091 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6092 | if (opts.addressprint) |
3086aeae DJ |
6093 | { |
6094 | annotate_field (4); | |
54e52265 | 6095 | if (header_of_multiple) |
112e8700 | 6096 | uiout->field_string ("addr", "<MULTIPLE>"); |
e9bbd7c5 | 6097 | else if (b->loc == NULL || loc->shlib_disabled) |
112e8700 | 6098 | uiout->field_string ("addr", "<PENDING>"); |
0101ce28 | 6099 | else |
112e8700 | 6100 | uiout->field_core_addr ("addr", |
5af949e3 | 6101 | loc->gdbarch, loc->address); |
3086aeae DJ |
6102 | } |
6103 | annotate_field (5); | |
0d381245 | 6104 | if (!header_of_multiple) |
170b53b2 | 6105 | print_breakpoint_location (b, loc); |
0d381245 | 6106 | if (b->loc) |
a6d9a66e | 6107 | *last_loc = b->loc; |
3086aeae DJ |
6108 | break; |
6109 | } | |
c906108c | 6110 | |
6c95b8df | 6111 | |
998580f1 | 6112 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6113 | { |
5c632425 | 6114 | std::vector<int> inf_nums; |
998580f1 | 6115 | int mi_only = 1; |
6c95b8df | 6116 | |
08036331 | 6117 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6118 | { |
6119 | if (inf->pspace == loc->pspace) | |
5c632425 | 6120 | inf_nums.push_back (inf->num); |
6c95b8df | 6121 | } |
998580f1 MK |
6122 | |
6123 | /* For backward compatibility, don't display inferiors in CLI unless | |
6124 | there are several. Always display for MI. */ | |
6125 | if (allflag | |
6126 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6127 | && (number_of_program_spaces () > 1 | |
6128 | || number_of_inferiors () > 1) | |
6129 | /* LOC is for existing B, it cannot be in | |
6130 | moribund_locations and thus having NULL OWNER. */ | |
6131 | && loc->owner->type != bp_catchpoint)) | |
6132 | mi_only = 0; | |
5c632425 | 6133 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6134 | } |
6135 | ||
4a306c9a | 6136 | if (!part_of_multiple) |
c4093a6a | 6137 | { |
4a306c9a JB |
6138 | if (b->thread != -1) |
6139 | { | |
6140 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6141 | "stop only in" line a little further down. */ |
112e8700 SM |
6142 | uiout->text (" thread "); |
6143 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6144 | } |
6145 | else if (b->task != 0) | |
6146 | { | |
112e8700 SM |
6147 | uiout->text (" task "); |
6148 | uiout->field_int ("task", b->task); | |
4a306c9a | 6149 | } |
c4093a6a | 6150 | } |
f1310107 | 6151 | |
112e8700 | 6152 | uiout->text ("\n"); |
f1310107 | 6153 | |
348d480f | 6154 | if (!part_of_multiple) |
f1310107 TJB |
6155 | b->ops->print_one_detail (b, uiout); |
6156 | ||
0d381245 | 6157 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6158 | { |
6159 | annotate_field (6); | |
112e8700 | 6160 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6161 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6162 | the frame ID. */ |
112e8700 | 6163 | uiout->field_core_addr ("frame", |
5af949e3 | 6164 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6165 | uiout->text ("\n"); |
c4093a6a JM |
6166 | } |
6167 | ||
28010a5d | 6168 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6169 | { |
6170 | annotate_field (7); | |
d77f58be | 6171 | if (is_tracepoint (b)) |
112e8700 | 6172 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6173 | else |
112e8700 SM |
6174 | uiout->text ("\tstop only if "); |
6175 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6176 | |
6177 | /* Print whether the target is doing the breakpoint's condition | |
6178 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6179 | if (is_breakpoint (b) | |
6180 | && breakpoint_condition_evaluation_mode () | |
6181 | == condition_evaluation_target) | |
6182 | { | |
112e8700 SM |
6183 | uiout->text (" ("); |
6184 | uiout->field_string ("evaluated-by", | |
b775012e | 6185 | bp_condition_evaluator (b)); |
112e8700 | 6186 | uiout->text (" evals)"); |
b775012e | 6187 | } |
112e8700 | 6188 | uiout->text ("\n"); |
0101ce28 JJ |
6189 | } |
6190 | ||
0d381245 | 6191 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6192 | { |
4a64f543 | 6193 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6194 | uiout->text ("\tstop only in thread "); |
6195 | if (uiout->is_mi_like_p ()) | |
6196 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6197 | else |
6198 | { | |
6199 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6200 | ||
112e8700 | 6201 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6202 | } |
112e8700 | 6203 | uiout->text ("\n"); |
c4093a6a JM |
6204 | } |
6205 | ||
556ec64d YQ |
6206 | if (!part_of_multiple) |
6207 | { | |
6208 | if (b->hit_count) | |
31f56a27 YQ |
6209 | { |
6210 | /* FIXME should make an annotation for this. */ | |
6211 | if (is_catchpoint (b)) | |
112e8700 | 6212 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6213 | else if (is_tracepoint (b)) |
112e8700 | 6214 | uiout->text ("\ttracepoint"); |
31f56a27 | 6215 | else |
112e8700 SM |
6216 | uiout->text ("\tbreakpoint"); |
6217 | uiout->text (" already hit "); | |
6218 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6219 | if (b->hit_count == 1) |
112e8700 | 6220 | uiout->text (" time\n"); |
31f56a27 | 6221 | else |
112e8700 | 6222 | uiout->text (" times\n"); |
31f56a27 | 6223 | } |
556ec64d YQ |
6224 | else |
6225 | { | |
31f56a27 | 6226 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6227 | if (uiout->is_mi_like_p ()) |
6228 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6229 | } |
6230 | } | |
8b93c638 | 6231 | |
0d381245 | 6232 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6233 | { |
6234 | annotate_field (8); | |
112e8700 SM |
6235 | uiout->text ("\tignore next "); |
6236 | uiout->field_int ("ignore", b->ignore_count); | |
6237 | uiout->text (" hits\n"); | |
c4093a6a | 6238 | } |
059fb39f | 6239 | |
816338b5 SS |
6240 | /* Note that an enable count of 1 corresponds to "enable once" |
6241 | behavior, which is reported by the combination of enablement and | |
6242 | disposition, so we don't need to mention it here. */ | |
6243 | if (!part_of_multiple && b->enable_count > 1) | |
6244 | { | |
6245 | annotate_field (8); | |
112e8700 | 6246 | uiout->text ("\tdisable after "); |
816338b5 SS |
6247 | /* Tweak the wording to clarify that ignore and enable counts |
6248 | are distinct, and have additive effect. */ | |
6249 | if (b->ignore_count) | |
112e8700 | 6250 | uiout->text ("additional "); |
816338b5 | 6251 | else |
112e8700 SM |
6252 | uiout->text ("next "); |
6253 | uiout->field_int ("enable", b->enable_count); | |
6254 | uiout->text (" hits\n"); | |
816338b5 SS |
6255 | } |
6256 | ||
f196051f SS |
6257 | if (!part_of_multiple && is_tracepoint (b)) |
6258 | { | |
6259 | struct tracepoint *tp = (struct tracepoint *) b; | |
6260 | ||
6261 | if (tp->traceframe_usage) | |
6262 | { | |
112e8700 SM |
6263 | uiout->text ("\ttrace buffer usage "); |
6264 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6265 | uiout->text (" bytes\n"); | |
f196051f SS |
6266 | } |
6267 | } | |
d3ce09f5 | 6268 | |
d1b0a7bf | 6269 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6270 | if (!part_of_multiple && l) |
c4093a6a JM |
6271 | { |
6272 | annotate_field (9); | |
2e783024 | 6273 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6274 | print_command_lines (uiout, l, 4); |
c4093a6a | 6275 | } |
d24317b4 | 6276 | |
d9b3f62e | 6277 | if (is_tracepoint (b)) |
1042e4c0 | 6278 | { |
d9b3f62e PA |
6279 | struct tracepoint *t = (struct tracepoint *) b; |
6280 | ||
6281 | if (!part_of_multiple && t->pass_count) | |
6282 | { | |
6283 | annotate_field (10); | |
112e8700 SM |
6284 | uiout->text ("\tpass count "); |
6285 | uiout->field_int ("pass", t->pass_count); | |
6286 | uiout->text (" \n"); | |
d9b3f62e | 6287 | } |
f2a8bc8a YQ |
6288 | |
6289 | /* Don't display it when tracepoint or tracepoint location is | |
6290 | pending. */ | |
6291 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6292 | { | |
6293 | annotate_field (11); | |
6294 | ||
112e8700 SM |
6295 | if (uiout->is_mi_like_p ()) |
6296 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6297 | loc->inserted ? "y" : "n"); |
6298 | else | |
6299 | { | |
6300 | if (loc->inserted) | |
112e8700 | 6301 | uiout->text ("\t"); |
f2a8bc8a | 6302 | else |
112e8700 SM |
6303 | uiout->text ("\tnot "); |
6304 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6305 | } |
6306 | } | |
1042e4c0 SS |
6307 | } |
6308 | ||
112e8700 | 6309 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6310 | { |
3a5c3e22 PA |
6311 | if (is_watchpoint (b)) |
6312 | { | |
6313 | struct watchpoint *w = (struct watchpoint *) b; | |
6314 | ||
112e8700 | 6315 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6316 | } |
f00aae0f | 6317 | else if (b->location != NULL |
d28cd78a | 6318 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6319 | uiout->field_string ("original-location", |
d28cd78a | 6320 | event_location_to_string (b->location.get ())); |
d24317b4 | 6321 | } |
c4093a6a | 6322 | } |
c5aa993b | 6323 | |
13674803 SM |
6324 | /* See breakpoint.h. */ |
6325 | ||
6326 | bool fix_multi_location_breakpoint_output_globally = false; | |
6327 | ||
0d381245 VP |
6328 | static void |
6329 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6330 | struct bp_location **last_loc, |
6c95b8df | 6331 | int allflag) |
0d381245 | 6332 | { |
79a45e25 | 6333 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6334 | bool use_fixed_output |
6335 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6336 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6337 | |
b4be1b06 SM |
6338 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
6339 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); | |
8d3788bd | 6340 | |
b4be1b06 SM |
6341 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6342 | are outside. */ | |
6343 | if (!use_fixed_output) | |
6344 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6345 | |
6346 | /* If this breakpoint has custom print function, | |
6347 | it's already printed. Otherwise, print individual | |
6348 | locations, if any. */ | |
6349 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6350 | { | |
4a64f543 MS |
6351 | /* If breakpoint has a single location that is disabled, we |
6352 | print it as if it had several locations, since otherwise it's | |
6353 | hard to represent "breakpoint enabled, location disabled" | |
6354 | situation. | |
6355 | ||
6356 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6357 | internally, that's not a property exposed to user. */ |
0d381245 | 6358 | if (b->loc |
a5606eee | 6359 | && !is_hardware_watchpoint (b) |
8d3788bd | 6360 | && (b->loc->next || !b->loc->enabled)) |
0d381245 | 6361 | { |
b4be1b06 SM |
6362 | gdb::optional<ui_out_emit_list> locations_list; |
6363 | ||
6364 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6365 | MI record. For later versions, place breakpoint locations in a | |
6366 | list. */ | |
6367 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6368 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6369 | |
b4be1b06 SM |
6370 | int n = 1; |
6371 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6372 | { |
b4be1b06 | 6373 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
8d3788bd | 6374 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); |
8d3788bd | 6375 | } |
0d381245 VP |
6376 | } |
6377 | } | |
6378 | } | |
6379 | ||
a6d9a66e UW |
6380 | static int |
6381 | breakpoint_address_bits (struct breakpoint *b) | |
6382 | { | |
6383 | int print_address_bits = 0; | |
6384 | struct bp_location *loc; | |
6385 | ||
c6d81124 PA |
6386 | /* Software watchpoints that aren't watching memory don't have an |
6387 | address to print. */ | |
6388 | if (is_no_memory_software_watchpoint (b)) | |
6389 | return 0; | |
6390 | ||
a6d9a66e UW |
6391 | for (loc = b->loc; loc; loc = loc->next) |
6392 | { | |
c7437ca6 PA |
6393 | int addr_bit; |
6394 | ||
c7437ca6 | 6395 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6396 | if (addr_bit > print_address_bits) |
6397 | print_address_bits = addr_bit; | |
6398 | } | |
6399 | ||
6400 | return print_address_bits; | |
6401 | } | |
0d381245 | 6402 | |
65630365 | 6403 | /* See breakpoint.h. */ |
c5aa993b | 6404 | |
65630365 PA |
6405 | void |
6406 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6407 | { |
a6d9a66e | 6408 | struct bp_location *dummy_loc = NULL; |
65630365 | 6409 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6410 | } |
c5aa993b | 6411 | |
09d682a4 TT |
6412 | /* Return true if this breakpoint was set by the user, false if it is |
6413 | internal or momentary. */ | |
6414 | ||
6415 | int | |
6416 | user_breakpoint_p (struct breakpoint *b) | |
6417 | { | |
46c6471b | 6418 | return b->number > 0; |
09d682a4 TT |
6419 | } |
6420 | ||
93daf339 TT |
6421 | /* See breakpoint.h. */ |
6422 | ||
6423 | int | |
6424 | pending_breakpoint_p (struct breakpoint *b) | |
6425 | { | |
6426 | return b->loc == NULL; | |
6427 | } | |
6428 | ||
7f3b0473 | 6429 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6430 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6431 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6432 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6433 | ones for which it returns non-zero. Return the total number of | |
6434 | breakpoints listed. */ | |
c906108c | 6435 | |
d77f58be | 6436 | static int |
4495129a | 6437 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6438 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6439 | { |
52f0bd74 | 6440 | struct breakpoint *b; |
a6d9a66e | 6441 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6442 | int nr_printable_breakpoints; |
79a45b7d | 6443 | struct value_print_options opts; |
a6d9a66e | 6444 | int print_address_bits = 0; |
269b11a2 | 6445 | int print_type_col_width = 14; |
79a45e25 | 6446 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6447 | |
79a45b7d TT |
6448 | get_user_print_options (&opts); |
6449 | ||
4a64f543 MS |
6450 | /* Compute the number of rows in the table, as well as the size |
6451 | required for address fields. */ | |
7f3b0473 AC |
6452 | nr_printable_breakpoints = 0; |
6453 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6454 | { |
6455 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6456 | if (filter && !filter (b)) | |
6457 | continue; | |
6458 | ||
6459 | /* If we have an "args" string, it is a list of breakpoints to | |
6460 | accept. Skip the others. */ | |
6461 | if (args != NULL && *args != '\0') | |
6462 | { | |
6463 | if (allflag && parse_and_eval_long (args) != b->number) | |
6464 | continue; | |
6465 | if (!allflag && !number_is_in_list (args, b->number)) | |
6466 | continue; | |
6467 | } | |
269b11a2 | 6468 | |
e5a67952 MS |
6469 | if (allflag || user_breakpoint_p (b)) |
6470 | { | |
6471 | int addr_bit, type_len; | |
a6d9a66e | 6472 | |
e5a67952 MS |
6473 | addr_bit = breakpoint_address_bits (b); |
6474 | if (addr_bit > print_address_bits) | |
6475 | print_address_bits = addr_bit; | |
269b11a2 | 6476 | |
e5a67952 MS |
6477 | type_len = strlen (bptype_string (b->type)); |
6478 | if (type_len > print_type_col_width) | |
6479 | print_type_col_width = type_len; | |
6480 | ||
6481 | nr_printable_breakpoints++; | |
6482 | } | |
6483 | } | |
7f3b0473 | 6484 | |
4a2b031d TT |
6485 | { |
6486 | ui_out_emit_table table_emitter (uiout, | |
6487 | opts.addressprint ? 6 : 5, | |
6488 | nr_printable_breakpoints, | |
6489 | "BreakpointTable"); | |
6490 | ||
6491 | if (nr_printable_breakpoints > 0) | |
6492 | annotate_breakpoints_headers (); | |
6493 | if (nr_printable_breakpoints > 0) | |
6494 | annotate_field (0); | |
6495 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6496 | if (nr_printable_breakpoints > 0) | |
6497 | annotate_field (1); | |
6498 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6499 | if (nr_printable_breakpoints > 0) | |
6500 | annotate_field (2); | |
6501 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6502 | if (nr_printable_breakpoints > 0) | |
6503 | annotate_field (3); | |
6504 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6505 | if (opts.addressprint) | |
6506 | { | |
6507 | if (nr_printable_breakpoints > 0) | |
6508 | annotate_field (4); | |
6509 | if (print_address_bits <= 32) | |
6510 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6511 | else | |
6512 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6513 | } | |
6514 | if (nr_printable_breakpoints > 0) | |
6515 | annotate_field (5); | |
6516 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6517 | uiout->table_body (); | |
6518 | if (nr_printable_breakpoints > 0) | |
6519 | annotate_breakpoints_table (); | |
6520 | ||
6521 | ALL_BREAKPOINTS (b) | |
6522 | { | |
6523 | QUIT; | |
6524 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6525 | if (filter && !filter (b)) | |
6526 | continue; | |
e5a67952 | 6527 | |
4a2b031d TT |
6528 | /* If we have an "args" string, it is a list of breakpoints to |
6529 | accept. Skip the others. */ | |
e5a67952 | 6530 | |
4a2b031d TT |
6531 | if (args != NULL && *args != '\0') |
6532 | { | |
6533 | if (allflag) /* maintenance info breakpoint */ | |
6534 | { | |
6535 | if (parse_and_eval_long (args) != b->number) | |
6536 | continue; | |
6537 | } | |
6538 | else /* all others */ | |
6539 | { | |
6540 | if (!number_is_in_list (args, b->number)) | |
6541 | continue; | |
6542 | } | |
6543 | } | |
6544 | /* We only print out user settable breakpoints unless the | |
6545 | allflag is set. */ | |
6546 | if (allflag || user_breakpoint_p (b)) | |
6547 | print_one_breakpoint (b, &last_loc, allflag); | |
6548 | } | |
6549 | } | |
698384cd | 6550 | |
7f3b0473 | 6551 | if (nr_printable_breakpoints == 0) |
c906108c | 6552 | { |
4a64f543 MS |
6553 | /* If there's a filter, let the caller decide how to report |
6554 | empty list. */ | |
d77f58be SS |
6555 | if (!filter) |
6556 | { | |
e5a67952 | 6557 | if (args == NULL || *args == '\0') |
112e8700 | 6558 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6559 | else |
112e8700 | 6560 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6561 | args); |
d77f58be | 6562 | } |
c906108c SS |
6563 | } |
6564 | else | |
c4093a6a | 6565 | { |
a6d9a66e UW |
6566 | if (last_loc && !server_command) |
6567 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6568 | } |
c906108c | 6569 | |
4a64f543 | 6570 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6571 | there have been breakpoints? */ |
c906108c | 6572 | annotate_breakpoints_table_end (); |
d77f58be SS |
6573 | |
6574 | return nr_printable_breakpoints; | |
c906108c SS |
6575 | } |
6576 | ||
ad443146 SS |
6577 | /* Display the value of default-collect in a way that is generally |
6578 | compatible with the breakpoint list. */ | |
6579 | ||
6580 | static void | |
6581 | default_collect_info (void) | |
6582 | { | |
79a45e25 PA |
6583 | struct ui_out *uiout = current_uiout; |
6584 | ||
ad443146 SS |
6585 | /* If it has no value (which is frequently the case), say nothing; a |
6586 | message like "No default-collect." gets in user's face when it's | |
6587 | not wanted. */ | |
6588 | if (!*default_collect) | |
6589 | return; | |
6590 | ||
6591 | /* The following phrase lines up nicely with per-tracepoint collect | |
6592 | actions. */ | |
112e8700 SM |
6593 | uiout->text ("default collect "); |
6594 | uiout->field_string ("default-collect", default_collect); | |
6595 | uiout->text (" \n"); | |
ad443146 SS |
6596 | } |
6597 | ||
c906108c | 6598 | static void |
0b39b52e | 6599 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6600 | { |
e5a67952 | 6601 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6602 | |
6603 | default_collect_info (); | |
d77f58be SS |
6604 | } |
6605 | ||
6606 | static void | |
1d12d88f | 6607 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6608 | { |
e5a67952 | 6609 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6610 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6611 | |
6612 | if (num_printed == 0) | |
6613 | { | |
e5a67952 | 6614 | if (args == NULL || *args == '\0') |
112e8700 | 6615 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6616 | else |
112e8700 | 6617 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6618 | } |
c906108c SS |
6619 | } |
6620 | ||
7a292a7a | 6621 | static void |
4495129a | 6622 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6623 | { |
e5a67952 | 6624 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6625 | |
6626 | default_collect_info (); | |
c906108c SS |
6627 | } |
6628 | ||
0d381245 | 6629 | static int |
714835d5 | 6630 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6631 | struct program_space *pspace, |
714835d5 | 6632 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6633 | { |
6634 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6635 | |
0d381245 VP |
6636 | for (; bl; bl = bl->next) |
6637 | { | |
6c95b8df PA |
6638 | if (bl->pspace == pspace |
6639 | && bl->address == pc | |
0d381245 VP |
6640 | && (!overlay_debugging || bl->section == section)) |
6641 | return 1; | |
6642 | } | |
6643 | return 0; | |
6644 | } | |
6645 | ||
672f9b60 | 6646 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6647 | concerns with logical breakpoints, so we match program spaces, not |
6648 | address spaces. */ | |
c906108c SS |
6649 | |
6650 | static void | |
6c95b8df PA |
6651 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6652 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6653 | struct obj_section *section, int thread) |
c906108c | 6654 | { |
52f0bd74 AC |
6655 | int others = 0; |
6656 | struct breakpoint *b; | |
c906108c SS |
6657 | |
6658 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6659 | others += (user_breakpoint_p (b) |
6660 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6661 | if (others > 0) |
6662 | { | |
a3f17187 AC |
6663 | if (others == 1) |
6664 | printf_filtered (_("Note: breakpoint ")); | |
6665 | else /* if (others == ???) */ | |
6666 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6667 | ALL_BREAKPOINTS (b) |
672f9b60 | 6668 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6669 | { |
6670 | others--; | |
6671 | printf_filtered ("%d", b->number); | |
6672 | if (b->thread == -1 && thread != -1) | |
6673 | printf_filtered (" (all threads)"); | |
6674 | else if (b->thread != -1) | |
6675 | printf_filtered (" (thread %d)", b->thread); | |
6676 | printf_filtered ("%s%s ", | |
059fb39f | 6677 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6678 | || b->enable_state == bp_call_disabled) |
0d381245 | 6679 | ? " (disabled)" |
0d381245 VP |
6680 | : ""), |
6681 | (others > 1) ? "," | |
6682 | : ((others == 1) ? " and" : "")); | |
6683 | } | |
a3f17187 | 6684 | printf_filtered (_("also set at pc ")); |
2636d81d | 6685 | fputs_styled (paddress (gdbarch, pc), address_style.style (), gdb_stdout); |
c906108c SS |
6686 | printf_filtered (".\n"); |
6687 | } | |
6688 | } | |
6689 | \f | |
c906108c | 6690 | |
cb1e4e32 PA |
6691 | /* Return true iff it is meaningful to use the address member of LOC. |
6692 | For some breakpoint types, the locations' address members are | |
6693 | irrelevant and it makes no sense to attempt to compare them to | |
6694 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6695 | |
cb1e4e32 PA |
6696 | More specifically, software watchpoints and catchpoints that are |
6697 | not backed by breakpoints always have a zero valued location | |
6698 | address and we don't want to mark breakpoints of any of these types | |
6699 | to be a duplicate of an actual breakpoint location at address | |
6700 | zero. */ | |
e4f237da | 6701 | |
cb1e4e32 PA |
6702 | static bool |
6703 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6704 | { |
cb1e4e32 | 6705 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6706 | } |
6707 | ||
6708 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6709 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6710 | ||
6711 | static int | |
4a64f543 MS |
6712 | watchpoint_locations_match (struct bp_location *loc1, |
6713 | struct bp_location *loc2) | |
2d134ed3 | 6714 | { |
3a5c3e22 PA |
6715 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6716 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6717 | ||
6718 | /* Both of them must exist. */ | |
6719 | gdb_assert (w1 != NULL); | |
6720 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6721 | |
4a64f543 MS |
6722 | /* If the target can evaluate the condition expression in hardware, |
6723 | then we we need to insert both watchpoints even if they are at | |
6724 | the same place. Otherwise the watchpoint will only trigger when | |
6725 | the condition of whichever watchpoint was inserted evaluates to | |
6726 | true, not giving a chance for GDB to check the condition of the | |
6727 | other watchpoint. */ | |
3a5c3e22 | 6728 | if ((w1->cond_exp |
4a64f543 MS |
6729 | && target_can_accel_watchpoint_condition (loc1->address, |
6730 | loc1->length, | |
0cf6dd15 | 6731 | loc1->watchpoint_type, |
4d01a485 | 6732 | w1->cond_exp.get ())) |
3a5c3e22 | 6733 | || (w2->cond_exp |
4a64f543 MS |
6734 | && target_can_accel_watchpoint_condition (loc2->address, |
6735 | loc2->length, | |
0cf6dd15 | 6736 | loc2->watchpoint_type, |
4d01a485 | 6737 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6738 | return 0; |
6739 | ||
85d721b8 PA |
6740 | /* Note that this checks the owner's type, not the location's. In |
6741 | case the target does not support read watchpoints, but does | |
6742 | support access watchpoints, we'll have bp_read_watchpoint | |
6743 | watchpoints with hw_access locations. Those should be considered | |
6744 | duplicates of hw_read locations. The hw_read locations will | |
6745 | become hw_access locations later. */ | |
2d134ed3 PA |
6746 | return (loc1->owner->type == loc2->owner->type |
6747 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6748 | && loc1->address == loc2->address | |
6749 | && loc1->length == loc2->length); | |
e4f237da KB |
6750 | } |
6751 | ||
31e77af2 | 6752 | /* See breakpoint.h. */ |
6c95b8df | 6753 | |
31e77af2 | 6754 | int |
accd0bcd YQ |
6755 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6756 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6757 | { |
f5656ead | 6758 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6759 | || aspace1 == aspace2) |
6760 | && addr1 == addr2); | |
6761 | } | |
6762 | ||
f1310107 TJB |
6763 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6764 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6765 | matches ASPACE2. On targets that have global breakpoints, the address | |
6766 | space doesn't really matter. */ | |
6767 | ||
6768 | static int | |
accd0bcd YQ |
6769 | breakpoint_address_match_range (const address_space *aspace1, |
6770 | CORE_ADDR addr1, | |
6771 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6772 | CORE_ADDR addr2) |
6773 | { | |
f5656ead | 6774 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6775 | || aspace1 == aspace2) |
6776 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6777 | } | |
6778 | ||
6779 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6780 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6781 | matches the breakpoint's address space. On targets that have global | |
6782 | breakpoints, the address space doesn't really matter. */ | |
6783 | ||
6784 | static int | |
6785 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6786 | const address_space *aspace, |
f1310107 TJB |
6787 | CORE_ADDR addr) |
6788 | { | |
6789 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6790 | aspace, addr) | |
6791 | || (bl->length | |
6792 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6793 | bl->address, bl->length, | |
6794 | aspace, addr))); | |
6795 | } | |
6796 | ||
d35ae833 PA |
6797 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6798 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6799 | match happens only if ASPACE matches the breakpoint's address | |
6800 | space. On targets that have global breakpoints, the address space | |
6801 | doesn't really matter. */ | |
6802 | ||
6803 | static int | |
6804 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6805 | const address_space *aspace, |
d35ae833 PA |
6806 | CORE_ADDR addr, int len) |
6807 | { | |
6808 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6809 | || bl->pspace->aspace == aspace) | |
6810 | { | |
6811 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6812 | ||
6813 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6814 | return 1; | |
6815 | } | |
6816 | return 0; | |
6817 | } | |
6818 | ||
1e4d1764 YQ |
6819 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6820 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6821 | true, otherwise returns false. */ | |
6822 | ||
6823 | static int | |
6824 | tracepoint_locations_match (struct bp_location *loc1, | |
6825 | struct bp_location *loc2) | |
6826 | { | |
6827 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6828 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6829 | locations at the same address of different tracepoints are regarded as | |
6830 | different locations. */ | |
6831 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6832 | else | |
6833 | return 0; | |
6834 | } | |
6835 | ||
2d134ed3 | 6836 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 PA |
6837 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
6838 | the same location. */ | |
2d134ed3 PA |
6839 | |
6840 | static int | |
4a64f543 MS |
6841 | breakpoint_locations_match (struct bp_location *loc1, |
6842 | struct bp_location *loc2) | |
2d134ed3 | 6843 | { |
2bdf28a0 JK |
6844 | int hw_point1, hw_point2; |
6845 | ||
6846 | /* Both of them must not be in moribund_locations. */ | |
6847 | gdb_assert (loc1->owner != NULL); | |
6848 | gdb_assert (loc2->owner != NULL); | |
6849 | ||
6850 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6851 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6852 | |
6853 | if (hw_point1 != hw_point2) | |
6854 | return 0; | |
6855 | else if (hw_point1) | |
6856 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6857 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6858 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6859 | else |
f1310107 TJB |
6860 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6861 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6862 | loc2->pspace->aspace, loc2->address) | |
6863 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6864 | } |
6865 | ||
76897487 KB |
6866 | static void |
6867 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6868 | int bnum, int have_bnum) | |
6869 | { | |
f63fbe86 MS |
6870 | /* The longest string possibly returned by hex_string_custom |
6871 | is 50 chars. These must be at least that big for safety. */ | |
6872 | char astr1[64]; | |
6873 | char astr2[64]; | |
76897487 | 6874 | |
bb599908 PH |
6875 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6876 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6877 | if (have_bnum) |
8a3fe4f8 | 6878 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6879 | bnum, astr1, astr2); |
6880 | else | |
8a3fe4f8 | 6881 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6882 | } |
6883 | ||
4a64f543 MS |
6884 | /* Adjust a breakpoint's address to account for architectural |
6885 | constraints on breakpoint placement. Return the adjusted address. | |
6886 | Note: Very few targets require this kind of adjustment. For most | |
6887 | targets, this function is simply the identity function. */ | |
76897487 KB |
6888 | |
6889 | static CORE_ADDR | |
a6d9a66e UW |
6890 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6891 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6892 | { |
a0de8c21 YQ |
6893 | if (bptype == bp_watchpoint |
6894 | || bptype == bp_hardware_watchpoint | |
6895 | || bptype == bp_read_watchpoint | |
6896 | || bptype == bp_access_watchpoint | |
6897 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6898 | { |
6899 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6900 | have their addresses modified. */ | |
6901 | return bpaddr; | |
6902 | } | |
7c16b83e PA |
6903 | else if (bptype == bp_single_step) |
6904 | { | |
6905 | /* Single-step breakpoints should not have their addresses | |
6906 | modified. If there's any architectural constrain that | |
6907 | applies to this address, then it should have already been | |
6908 | taken into account when the breakpoint was created in the | |
6909 | first place. If we didn't do this, stepping through e.g., | |
6910 | Thumb-2 IT blocks would break. */ | |
6911 | return bpaddr; | |
6912 | } | |
76897487 KB |
6913 | else |
6914 | { | |
a0de8c21 YQ |
6915 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6916 | ||
6917 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6918 | { | |
6919 | /* Some targets have architectural constraints on the placement | |
6920 | of breakpoint instructions. Obtain the adjusted address. */ | |
6921 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6922 | } | |
76897487 | 6923 | |
a0de8c21 | 6924 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6925 | |
6926 | /* An adjusted breakpoint address can significantly alter | |
6927 | a user's expectations. Print a warning if an adjustment | |
6928 | is required. */ | |
6929 | if (adjusted_bpaddr != bpaddr) | |
6930 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6931 | ||
6932 | return adjusted_bpaddr; | |
6933 | } | |
6934 | } | |
6935 | ||
cb1e4e32 PA |
6936 | static bp_loc_type |
6937 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 6938 | { |
cb1e4e32 | 6939 | switch (type) |
e049a4b5 DJ |
6940 | { |
6941 | case bp_breakpoint: | |
7c16b83e | 6942 | case bp_single_step: |
e049a4b5 DJ |
6943 | case bp_until: |
6944 | case bp_finish: | |
6945 | case bp_longjmp: | |
6946 | case bp_longjmp_resume: | |
e2e4d78b | 6947 | case bp_longjmp_call_dummy: |
186c406b TT |
6948 | case bp_exception: |
6949 | case bp_exception_resume: | |
e049a4b5 | 6950 | case bp_step_resume: |
2c03e5be | 6951 | case bp_hp_step_resume: |
e049a4b5 DJ |
6952 | case bp_watchpoint_scope: |
6953 | case bp_call_dummy: | |
aa7d318d | 6954 | case bp_std_terminate: |
e049a4b5 DJ |
6955 | case bp_shlib_event: |
6956 | case bp_thread_event: | |
6957 | case bp_overlay_event: | |
4efc6507 | 6958 | case bp_jit_event: |
0fd8e87f | 6959 | case bp_longjmp_master: |
aa7d318d | 6960 | case bp_std_terminate_master: |
186c406b | 6961 | case bp_exception_master: |
0e30163f JK |
6962 | case bp_gnu_ifunc_resolver: |
6963 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6964 | case bp_dprintf: |
cb1e4e32 | 6965 | return bp_loc_software_breakpoint; |
e049a4b5 | 6966 | case bp_hardware_breakpoint: |
cb1e4e32 | 6967 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
6968 | case bp_hardware_watchpoint: |
6969 | case bp_read_watchpoint: | |
6970 | case bp_access_watchpoint: | |
cb1e4e32 | 6971 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 6972 | case bp_watchpoint: |
ce78b96d | 6973 | case bp_catchpoint: |
15c3d785 PA |
6974 | case bp_tracepoint: |
6975 | case bp_fast_tracepoint: | |
0fb4aa4b | 6976 | case bp_static_tracepoint: |
cb1e4e32 | 6977 | return bp_loc_other; |
e049a4b5 | 6978 | default: |
e2e0b3e5 | 6979 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 6980 | } |
cb1e4e32 PA |
6981 | } |
6982 | ||
6983 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
6984 | { | |
6985 | this->owner = owner; | |
6986 | this->cond_bytecode = NULL; | |
6987 | this->shlib_disabled = 0; | |
6988 | this->enabled = 1; | |
6989 | ||
6990 | this->loc_type = type; | |
e049a4b5 | 6991 | |
cb1e4e32 PA |
6992 | if (this->loc_type == bp_loc_software_breakpoint |
6993 | || this->loc_type == bp_loc_hardware_breakpoint) | |
6994 | mark_breakpoint_location_modified (this); | |
6995 | ||
6996 | this->refc = 1; | |
6997 | } | |
6998 | ||
6999 | bp_location::bp_location (breakpoint *owner) | |
7000 | : bp_location::bp_location (owner, | |
7001 | bp_location_from_bp_type (owner->type)) | |
7002 | { | |
28010a5d PA |
7003 | } |
7004 | ||
7005 | /* Allocate a struct bp_location. */ | |
7006 | ||
7007 | static struct bp_location * | |
7008 | allocate_bp_location (struct breakpoint *bpt) | |
7009 | { | |
348d480f PA |
7010 | return bpt->ops->allocate_location (bpt); |
7011 | } | |
7cc221ef | 7012 | |
f431efe5 PA |
7013 | static void |
7014 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7015 | { |
4d01a485 | 7016 | delete loc; |
fe3f5fa8 VP |
7017 | } |
7018 | ||
f431efe5 PA |
7019 | /* Increment reference count. */ |
7020 | ||
7021 | static void | |
7022 | incref_bp_location (struct bp_location *bl) | |
7023 | { | |
7024 | ++bl->refc; | |
7025 | } | |
7026 | ||
7027 | /* Decrement reference count. If the reference count reaches 0, | |
7028 | destroy the bp_location. Sets *BLP to NULL. */ | |
7029 | ||
7030 | static void | |
7031 | decref_bp_location (struct bp_location **blp) | |
7032 | { | |
0807b50c PA |
7033 | gdb_assert ((*blp)->refc > 0); |
7034 | ||
f431efe5 PA |
7035 | if (--(*blp)->refc == 0) |
7036 | free_bp_location (*blp); | |
7037 | *blp = NULL; | |
7038 | } | |
7039 | ||
346774a9 | 7040 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7041 | |
b270e6f9 TT |
7042 | static breakpoint * |
7043 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7044 | { |
346774a9 | 7045 | struct breakpoint *b1; |
b270e6f9 | 7046 | struct breakpoint *result = b.get (); |
c906108c | 7047 | |
346774a9 PA |
7048 | /* Add this breakpoint to the end of the chain so that a list of |
7049 | breakpoints will come out in order of increasing numbers. */ | |
7050 | ||
7051 | b1 = breakpoint_chain; | |
7052 | if (b1 == 0) | |
b270e6f9 | 7053 | breakpoint_chain = b.release (); |
346774a9 PA |
7054 | else |
7055 | { | |
7056 | while (b1->next) | |
7057 | b1 = b1->next; | |
b270e6f9 | 7058 | b1->next = b.release (); |
346774a9 | 7059 | } |
b270e6f9 TT |
7060 | |
7061 | return result; | |
346774a9 PA |
7062 | } |
7063 | ||
7064 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7065 | ||
7066 | static void | |
7067 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7068 | struct gdbarch *gdbarch, | |
28010a5d | 7069 | enum bptype bptype, |
c0a91b2b | 7070 | const struct breakpoint_ops *ops) |
346774a9 | 7071 | { |
348d480f PA |
7072 | gdb_assert (ops != NULL); |
7073 | ||
28010a5d | 7074 | b->ops = ops; |
4d28f7a8 | 7075 | b->type = bptype; |
a6d9a66e | 7076 | b->gdbarch = gdbarch; |
c906108c SS |
7077 | b->language = current_language->la_language; |
7078 | b->input_radix = input_radix; | |
d0fb5eae | 7079 | b->related_breakpoint = b; |
346774a9 PA |
7080 | } |
7081 | ||
7082 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7083 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7084 | |
7085 | static struct breakpoint * | |
7086 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7087 | enum bptype bptype, |
c0a91b2b | 7088 | const struct breakpoint_ops *ops) |
346774a9 | 7089 | { |
3b0871f4 | 7090 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7091 | |
3b0871f4 | 7092 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7093 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7094 | } |
7095 | ||
0ba852ab | 7096 | /* Initialize loc->function_name. */ |
0e30163f | 7097 | |
0d381245 | 7098 | static void |
0ba852ab | 7099 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7100 | { |
2bdf28a0 JK |
7101 | gdb_assert (loc->owner != NULL); |
7102 | ||
0d381245 | 7103 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7104 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7105 | || is_tracepoint (loc->owner)) |
0d381245 | 7106 | { |
2c02bd72 | 7107 | const char *function_name; |
0e30163f | 7108 | |
3467ec66 | 7109 | if (loc->msymbol != NULL |
f50776aa | 7110 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7111 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7112 | { |
7113 | struct breakpoint *b = loc->owner; | |
7114 | ||
3467ec66 PA |
7115 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7116 | ||
7117 | if (b->type == bp_breakpoint && b->loc == loc | |
7118 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7119 | { |
7120 | /* Create only the whole new breakpoint of this type but do not | |
7121 | mess more complicated breakpoints with multiple locations. */ | |
7122 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7123 | /* Remember the resolver's address for use by the return |
7124 | breakpoint. */ | |
3467ec66 | 7125 | loc->related_address = loc->address; |
0e30163f JK |
7126 | } |
7127 | } | |
3467ec66 PA |
7128 | else |
7129 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7130 | |
2c02bd72 DE |
7131 | if (function_name) |
7132 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7133 | } |
7134 | } | |
7135 | ||
a6d9a66e | 7136 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7137 | struct gdbarch * |
a6d9a66e UW |
7138 | get_sal_arch (struct symtab_and_line sal) |
7139 | { | |
7140 | if (sal.section) | |
7141 | return get_objfile_arch (sal.section->objfile); | |
7142 | if (sal.symtab) | |
eb822aa6 | 7143 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7144 | |
7145 | return NULL; | |
7146 | } | |
7147 | ||
346774a9 PA |
7148 | /* Low level routine for partially initializing a breakpoint of type |
7149 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7150 | file name, and line number are provided by SAL. |
0d381245 VP |
7151 | |
7152 | It is expected that the caller will complete the initialization of | |
7153 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7154 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7155 | |
346774a9 PA |
7156 | static void |
7157 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7158 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7159 | const struct breakpoint_ops *ops) |
0d381245 | 7160 | { |
28010a5d | 7161 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7162 | |
3742cc8b | 7163 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7164 | |
6c95b8df PA |
7165 | if (bptype != bp_catchpoint) |
7166 | gdb_assert (sal.pspace != NULL); | |
7167 | ||
f8eba3c6 TT |
7168 | /* Store the program space that was used to set the breakpoint, |
7169 | except for ordinary breakpoints, which are independent of the | |
7170 | program space. */ | |
7171 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7172 | b->pspace = sal.pspace; | |
346774a9 | 7173 | } |
c906108c | 7174 | |
346774a9 PA |
7175 | /* set_raw_breakpoint is a low level routine for allocating and |
7176 | partially initializing a breakpoint of type BPTYPE. The newly | |
7177 | created breakpoint's address, section, source file name, and line | |
7178 | number are provided by SAL. The newly created and partially | |
7179 | initialized breakpoint is added to the breakpoint chain and | |
7180 | is also returned as the value of this function. | |
7181 | ||
7182 | It is expected that the caller will complete the initialization of | |
7183 | the newly created breakpoint struct as well as output any status | |
7184 | information regarding the creation of a new breakpoint. In | |
7185 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7186 | number! Care should be taken to not allow an error to occur | |
7187 | prior to completing the initialization of the breakpoint. If this | |
7188 | should happen, a bogus breakpoint will be left on the chain. */ | |
7189 | ||
7190 | struct breakpoint * | |
7191 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7192 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7193 | const struct breakpoint_ops *ops) |
346774a9 | 7194 | { |
3b0871f4 | 7195 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7196 | |
3b0871f4 | 7197 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7198 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7199 | } |
7200 | ||
53a5351d | 7201 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7202 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7203 | initiated the operation. */ | |
c906108c SS |
7204 | |
7205 | void | |
186c406b | 7206 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7207 | { |
35df4500 | 7208 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7209 | int thread = tp->global_num; |
0fd8e87f UW |
7210 | |
7211 | /* To avoid having to rescan all objfile symbols at every step, | |
7212 | we maintain a list of continually-inserted but always disabled | |
7213 | longjmp "master" breakpoints. Here, we simply create momentary | |
7214 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7215 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7216 | if (b->pspace == current_program_space |
186c406b TT |
7217 | && (b->type == bp_longjmp_master |
7218 | || b->type == bp_exception_master)) | |
0fd8e87f | 7219 | { |
06edf0c0 PA |
7220 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7221 | struct breakpoint *clone; | |
cc59ec59 | 7222 | |
e2e4d78b JK |
7223 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7224 | after their removal. */ | |
06edf0c0 | 7225 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7226 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7227 | clone->thread = thread; |
7228 | } | |
186c406b TT |
7229 | |
7230 | tp->initiating_frame = frame; | |
c906108c SS |
7231 | } |
7232 | ||
611c83ae | 7233 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7234 | void |
611c83ae | 7235 | delete_longjmp_breakpoint (int thread) |
c906108c | 7236 | { |
35df4500 | 7237 | struct breakpoint *b, *b_tmp; |
c906108c | 7238 | |
35df4500 | 7239 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7240 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7241 | { |
7242 | if (b->thread == thread) | |
7243 | delete_breakpoint (b); | |
7244 | } | |
c906108c SS |
7245 | } |
7246 | ||
f59f708a PA |
7247 | void |
7248 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7249 | { | |
7250 | struct breakpoint *b, *b_tmp; | |
7251 | ||
7252 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7253 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7254 | { | |
7255 | if (b->thread == thread) | |
7256 | b->disposition = disp_del_at_next_stop; | |
7257 | } | |
7258 | } | |
7259 | ||
e2e4d78b JK |
7260 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7261 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7262 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7263 | breakpoints. */ | |
7264 | ||
7265 | struct breakpoint * | |
7266 | set_longjmp_breakpoint_for_call_dummy (void) | |
7267 | { | |
7268 | struct breakpoint *b, *retval = NULL; | |
7269 | ||
7270 | ALL_BREAKPOINTS (b) | |
7271 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7272 | { | |
7273 | struct breakpoint *new_b; | |
7274 | ||
7275 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7276 | &momentary_breakpoint_ops, |
7277 | 1); | |
00431a78 | 7278 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7279 | |
7280 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7281 | ||
7282 | gdb_assert (new_b->related_breakpoint == new_b); | |
7283 | if (retval == NULL) | |
7284 | retval = new_b; | |
7285 | new_b->related_breakpoint = retval; | |
7286 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7287 | retval = retval->related_breakpoint; | |
7288 | retval->related_breakpoint = new_b; | |
7289 | } | |
7290 | ||
7291 | return retval; | |
7292 | } | |
7293 | ||
7294 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7295 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7296 | stack. |
7297 | ||
7298 | You should call this function only at places where it is safe to currently | |
7299 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7300 | frames. */ | |
7301 | ||
7302 | void | |
b67a2c6f | 7303 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7304 | { |
7305 | struct breakpoint *b, *b_tmp; | |
7306 | ||
7307 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7308 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7309 | { |
7310 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7311 | ||
7312 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7313 | dummy_b = dummy_b->related_breakpoint; | |
7314 | if (dummy_b->type != bp_call_dummy | |
7315 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7316 | continue; | |
7317 | ||
00431a78 | 7318 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7319 | |
7320 | while (b->related_breakpoint != b) | |
7321 | { | |
7322 | if (b_tmp == b->related_breakpoint) | |
7323 | b_tmp = b->related_breakpoint->next; | |
7324 | delete_breakpoint (b->related_breakpoint); | |
7325 | } | |
7326 | delete_breakpoint (b); | |
7327 | } | |
7328 | } | |
7329 | ||
1900040c MS |
7330 | void |
7331 | enable_overlay_breakpoints (void) | |
7332 | { | |
52f0bd74 | 7333 | struct breakpoint *b; |
1900040c MS |
7334 | |
7335 | ALL_BREAKPOINTS (b) | |
7336 | if (b->type == bp_overlay_event) | |
7337 | { | |
7338 | b->enable_state = bp_enabled; | |
44702360 | 7339 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7340 | overlay_events_enabled = 1; |
1900040c MS |
7341 | } |
7342 | } | |
7343 | ||
7344 | void | |
7345 | disable_overlay_breakpoints (void) | |
7346 | { | |
52f0bd74 | 7347 | struct breakpoint *b; |
1900040c MS |
7348 | |
7349 | ALL_BREAKPOINTS (b) | |
7350 | if (b->type == bp_overlay_event) | |
7351 | { | |
7352 | b->enable_state = bp_disabled; | |
44702360 | 7353 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7354 | overlay_events_enabled = 0; |
1900040c MS |
7355 | } |
7356 | } | |
7357 | ||
aa7d318d TT |
7358 | /* Set an active std::terminate breakpoint for each std::terminate |
7359 | master breakpoint. */ | |
7360 | void | |
7361 | set_std_terminate_breakpoint (void) | |
7362 | { | |
35df4500 | 7363 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7364 | |
35df4500 | 7365 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7366 | if (b->pspace == current_program_space |
7367 | && b->type == bp_std_terminate_master) | |
7368 | { | |
06edf0c0 | 7369 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7370 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7371 | } |
7372 | } | |
7373 | ||
7374 | /* Delete all the std::terminate breakpoints. */ | |
7375 | void | |
7376 | delete_std_terminate_breakpoint (void) | |
7377 | { | |
35df4500 | 7378 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7379 | |
35df4500 | 7380 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7381 | if (b->type == bp_std_terminate) |
7382 | delete_breakpoint (b); | |
7383 | } | |
7384 | ||
c4093a6a | 7385 | struct breakpoint * |
a6d9a66e | 7386 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7387 | { |
7388 | struct breakpoint *b; | |
c4093a6a | 7389 | |
06edf0c0 PA |
7390 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7391 | &internal_breakpoint_ops); | |
7392 | ||
b5de0fa7 | 7393 | b->enable_state = bp_enabled; |
f00aae0f | 7394 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7395 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7396 | |
44702360 | 7397 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7398 | |
c4093a6a JM |
7399 | return b; |
7400 | } | |
7401 | ||
0101ce28 JJ |
7402 | struct lang_and_radix |
7403 | { | |
7404 | enum language lang; | |
7405 | int radix; | |
7406 | }; | |
7407 | ||
4efc6507 DE |
7408 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7409 | ||
7410 | struct breakpoint * | |
7411 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7412 | { | |
2a7f3dff PA |
7413 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7414 | &internal_breakpoint_ops); | |
4efc6507 | 7415 | } |
0101ce28 | 7416 | |
03673fc7 PP |
7417 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7418 | ||
7419 | void | |
7420 | remove_jit_event_breakpoints (void) | |
7421 | { | |
7422 | struct breakpoint *b, *b_tmp; | |
7423 | ||
7424 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7425 | if (b->type == bp_jit_event | |
7426 | && b->loc->pspace == current_program_space) | |
7427 | delete_breakpoint (b); | |
7428 | } | |
7429 | ||
cae688ec JJ |
7430 | void |
7431 | remove_solib_event_breakpoints (void) | |
7432 | { | |
35df4500 | 7433 | struct breakpoint *b, *b_tmp; |
cae688ec | 7434 | |
35df4500 | 7435 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7436 | if (b->type == bp_shlib_event |
7437 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7438 | delete_breakpoint (b); |
7439 | } | |
7440 | ||
f37f681c PA |
7441 | /* See breakpoint.h. */ |
7442 | ||
7443 | void | |
7444 | remove_solib_event_breakpoints_at_next_stop (void) | |
7445 | { | |
7446 | struct breakpoint *b, *b_tmp; | |
7447 | ||
7448 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7449 | if (b->type == bp_shlib_event | |
7450 | && b->loc->pspace == current_program_space) | |
7451 | b->disposition = disp_del_at_next_stop; | |
7452 | } | |
7453 | ||
04086b45 PA |
7454 | /* Helper for create_solib_event_breakpoint / |
7455 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7456 | INSERT_MODE to pass through to update_global_location_list. */ | |
7457 | ||
7458 | static struct breakpoint * | |
7459 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7460 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7461 | { |
7462 | struct breakpoint *b; | |
7463 | ||
06edf0c0 PA |
7464 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7465 | &internal_breakpoint_ops); | |
04086b45 | 7466 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7467 | return b; |
7468 | } | |
7469 | ||
04086b45 PA |
7470 | struct breakpoint * |
7471 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7472 | { | |
7473 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7474 | } | |
7475 | ||
f37f681c PA |
7476 | /* See breakpoint.h. */ |
7477 | ||
7478 | struct breakpoint * | |
7479 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7480 | { | |
7481 | struct breakpoint *b; | |
7482 | ||
04086b45 PA |
7483 | /* Explicitly tell update_global_location_list to insert |
7484 | locations. */ | |
7485 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7486 | if (!b->loc->inserted) |
7487 | { | |
7488 | delete_breakpoint (b); | |
7489 | return NULL; | |
7490 | } | |
7491 | return b; | |
7492 | } | |
7493 | ||
cae688ec JJ |
7494 | /* Disable any breakpoints that are on code in shared libraries. Only |
7495 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7496 | ||
7497 | void | |
cb851954 | 7498 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7499 | { |
876fa593 | 7500 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7501 | |
876fa593 | 7502 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7503 | { |
2bdf28a0 | 7504 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7505 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7506 | |
4a64f543 MS |
7507 | /* We apply the check to all breakpoints, including disabled for |
7508 | those with loc->duplicate set. This is so that when breakpoint | |
7509 | becomes enabled, or the duplicate is removed, gdb will try to | |
7510 | insert all breakpoints. If we don't set shlib_disabled here, | |
7511 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7512 | if (((b->type == bp_breakpoint) |
508ccb1f | 7513 | || (b->type == bp_jit_event) |
1042e4c0 | 7514 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7515 | || (is_tracepoint (b))) |
6c95b8df | 7516 | && loc->pspace == current_program_space |
0d381245 | 7517 | && !loc->shlib_disabled |
6c95b8df | 7518 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7519 | ) |
0d381245 VP |
7520 | { |
7521 | loc->shlib_disabled = 1; | |
7522 | } | |
cae688ec JJ |
7523 | } |
7524 | } | |
7525 | ||
63644780 NB |
7526 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7527 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7528 | disabled ones can just stay disabled. */ | |
84acb35a | 7529 | |
75149521 | 7530 | static void |
84acb35a JJ |
7531 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7532 | { | |
876fa593 | 7533 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7534 | int disabled_shlib_breaks = 0; |
7535 | ||
876fa593 | 7536 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7537 | { |
2bdf28a0 | 7538 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7539 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7540 | |
1e4d1764 | 7541 | if (solib->pspace == loc->pspace |
e2dd7057 | 7542 | && !loc->shlib_disabled |
1e4d1764 YQ |
7543 | && (((b->type == bp_breakpoint |
7544 | || b->type == bp_jit_event | |
7545 | || b->type == bp_hardware_breakpoint) | |
7546 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7547 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7548 | || is_tracepoint (b)) | |
e2dd7057 | 7549 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7550 | { |
e2dd7057 PP |
7551 | loc->shlib_disabled = 1; |
7552 | /* At this point, we cannot rely on remove_breakpoint | |
7553 | succeeding so we must mark the breakpoint as not inserted | |
7554 | to prevent future errors occurring in remove_breakpoints. */ | |
7555 | loc->inserted = 0; | |
8d3788bd VP |
7556 | |
7557 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7558 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7559 | |
e2dd7057 PP |
7560 | if (!disabled_shlib_breaks) |
7561 | { | |
223ffa71 | 7562 | target_terminal::ours_for_output (); |
3e43a32a MS |
7563 | warning (_("Temporarily disabling breakpoints " |
7564 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7565 | solib->so_name); |
84acb35a | 7566 | } |
e2dd7057 | 7567 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7568 | } |
7569 | } | |
84acb35a JJ |
7570 | } |
7571 | ||
63644780 NB |
7572 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7573 | notification of free_objfile. Only apply to enabled breakpoints, | |
7574 | disabled ones can just stay disabled. */ | |
7575 | ||
7576 | static void | |
7577 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7578 | { | |
7579 | struct breakpoint *b; | |
7580 | ||
7581 | if (objfile == NULL) | |
7582 | return; | |
7583 | ||
d03de421 PA |
7584 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7585 | managed by the user with add-symbol-file/remove-symbol-file. | |
7586 | Similarly to how breakpoints in shared libraries are handled in | |
7587 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7588 | shlib_disabled so they end up uninserted on the next global |
7589 | location list update. Shared libraries not loaded by the user | |
7590 | aren't handled here -- they're already handled in | |
7591 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7592 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7593 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7594 | main objfile). */ | |
7595 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7596 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7597 | return; |
7598 | ||
7599 | ALL_BREAKPOINTS (b) | |
7600 | { | |
7601 | struct bp_location *loc; | |
7602 | int bp_modified = 0; | |
7603 | ||
7604 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7605 | continue; | |
7606 | ||
7607 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7608 | { | |
7609 | CORE_ADDR loc_addr = loc->address; | |
7610 | ||
7611 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7612 | && loc->loc_type != bp_loc_software_breakpoint) | |
7613 | continue; | |
7614 | ||
7615 | if (loc->shlib_disabled != 0) | |
7616 | continue; | |
7617 | ||
7618 | if (objfile->pspace != loc->pspace) | |
7619 | continue; | |
7620 | ||
7621 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7622 | && loc->loc_type != bp_loc_software_breakpoint) | |
7623 | continue; | |
7624 | ||
7625 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7626 | { | |
7627 | loc->shlib_disabled = 1; | |
08351840 PA |
7628 | /* At this point, we don't know whether the object was |
7629 | unmapped from the inferior or not, so leave the | |
7630 | inserted flag alone. We'll handle failure to | |
7631 | uninsert quietly, in case the object was indeed | |
7632 | unmapped. */ | |
63644780 NB |
7633 | |
7634 | mark_breakpoint_location_modified (loc); | |
7635 | ||
7636 | bp_modified = 1; | |
7637 | } | |
7638 | } | |
7639 | ||
7640 | if (bp_modified) | |
76727919 | 7641 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7642 | } |
7643 | } | |
7644 | ||
ce78b96d JB |
7645 | /* FORK & VFORK catchpoints. */ |
7646 | ||
e29a4733 | 7647 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7648 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7649 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7650 | |
c1fc2657 | 7651 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7652 | { |
e29a4733 PA |
7653 | /* Process id of a child process whose forking triggered this |
7654 | catchpoint. This field is only valid immediately after this | |
7655 | catchpoint has triggered. */ | |
7656 | ptid_t forked_inferior_pid; | |
7657 | }; | |
7658 | ||
4a64f543 MS |
7659 | /* Implement the "insert" breakpoint_ops method for fork |
7660 | catchpoints. */ | |
ce78b96d | 7661 | |
77b06cd7 TJB |
7662 | static int |
7663 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7664 | { |
e99b03dc | 7665 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7666 | } |
7667 | ||
4a64f543 MS |
7668 | /* Implement the "remove" breakpoint_ops method for fork |
7669 | catchpoints. */ | |
ce78b96d JB |
7670 | |
7671 | static int | |
73971819 | 7672 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7673 | { |
e99b03dc | 7674 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7675 | } |
7676 | ||
7677 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7678 | catchpoints. */ | |
7679 | ||
7680 | static int | |
f1310107 | 7681 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7682 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7683 | const struct target_waitstatus *ws) |
ce78b96d | 7684 | { |
e29a4733 PA |
7685 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7686 | ||
f90263c1 TT |
7687 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7688 | return 0; | |
7689 | ||
7690 | c->forked_inferior_pid = ws->value.related_pid; | |
7691 | return 1; | |
ce78b96d JB |
7692 | } |
7693 | ||
4a64f543 MS |
7694 | /* Implement the "print_it" breakpoint_ops method for fork |
7695 | catchpoints. */ | |
ce78b96d JB |
7696 | |
7697 | static enum print_stop_action | |
348d480f | 7698 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7699 | { |
36dfb11c | 7700 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7701 | struct breakpoint *b = bs->breakpoint_at; |
7702 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7703 | |
ce78b96d | 7704 | annotate_catchpoint (b->number); |
f303dbd6 | 7705 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7706 | if (b->disposition == disp_del) |
112e8700 | 7707 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7708 | else |
112e8700 SM |
7709 | uiout->text ("Catchpoint "); |
7710 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7711 | { |
112e8700 SM |
7712 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7713 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7714 | } |
112e8700 SM |
7715 | uiout->field_int ("bkptno", b->number); |
7716 | uiout->text (" (forked process "); | |
e99b03dc | 7717 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7718 | uiout->text ("), "); |
ce78b96d JB |
7719 | return PRINT_SRC_AND_LOC; |
7720 | } | |
7721 | ||
4a64f543 MS |
7722 | /* Implement the "print_one" breakpoint_ops method for fork |
7723 | catchpoints. */ | |
ce78b96d JB |
7724 | |
7725 | static void | |
a6d9a66e | 7726 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7727 | { |
e29a4733 | 7728 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7729 | struct value_print_options opts; |
79a45e25 | 7730 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7731 | |
7732 | get_user_print_options (&opts); | |
7733 | ||
4a64f543 MS |
7734 | /* Field 4, the address, is omitted (which makes the columns not |
7735 | line up too nicely with the headers, but the effect is relatively | |
7736 | readable). */ | |
79a45b7d | 7737 | if (opts.addressprint) |
112e8700 | 7738 | uiout->field_skip ("addr"); |
ce78b96d | 7739 | annotate_field (5); |
112e8700 | 7740 | uiout->text ("fork"); |
d7e15655 | 7741 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7742 | { |
112e8700 | 7743 | uiout->text (", process "); |
e99b03dc | 7744 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7745 | uiout->spaces (1); |
ce78b96d | 7746 | } |
8ac3646f | 7747 | |
112e8700 SM |
7748 | if (uiout->is_mi_like_p ()) |
7749 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7750 | } |
7751 | ||
7752 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7753 | catchpoints. */ | |
7754 | ||
7755 | static void | |
7756 | print_mention_catch_fork (struct breakpoint *b) | |
7757 | { | |
7758 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7759 | } | |
7760 | ||
6149aea9 PA |
7761 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7762 | catchpoints. */ | |
7763 | ||
7764 | static void | |
7765 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7766 | { | |
7767 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7768 | print_recreate_thread (b, fp); |
6149aea9 PA |
7769 | } |
7770 | ||
ce78b96d JB |
7771 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7772 | ||
2060206e | 7773 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7774 | |
4a64f543 MS |
7775 | /* Implement the "insert" breakpoint_ops method for vfork |
7776 | catchpoints. */ | |
ce78b96d | 7777 | |
77b06cd7 TJB |
7778 | static int |
7779 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7780 | { |
e99b03dc | 7781 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7782 | } |
7783 | ||
4a64f543 MS |
7784 | /* Implement the "remove" breakpoint_ops method for vfork |
7785 | catchpoints. */ | |
ce78b96d JB |
7786 | |
7787 | static int | |
73971819 | 7788 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7789 | { |
e99b03dc | 7790 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7791 | } |
7792 | ||
7793 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7794 | catchpoints. */ | |
7795 | ||
7796 | static int | |
f1310107 | 7797 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7798 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7799 | const struct target_waitstatus *ws) |
ce78b96d | 7800 | { |
e29a4733 PA |
7801 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7802 | ||
f90263c1 TT |
7803 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7804 | return 0; | |
7805 | ||
7806 | c->forked_inferior_pid = ws->value.related_pid; | |
7807 | return 1; | |
ce78b96d JB |
7808 | } |
7809 | ||
4a64f543 MS |
7810 | /* Implement the "print_it" breakpoint_ops method for vfork |
7811 | catchpoints. */ | |
ce78b96d JB |
7812 | |
7813 | static enum print_stop_action | |
348d480f | 7814 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7815 | { |
36dfb11c | 7816 | struct ui_out *uiout = current_uiout; |
348d480f | 7817 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7818 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7819 | ||
ce78b96d | 7820 | annotate_catchpoint (b->number); |
f303dbd6 | 7821 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7822 | if (b->disposition == disp_del) |
112e8700 | 7823 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7824 | else |
112e8700 SM |
7825 | uiout->text ("Catchpoint "); |
7826 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7827 | { |
112e8700 SM |
7828 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7829 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7830 | } |
112e8700 SM |
7831 | uiout->field_int ("bkptno", b->number); |
7832 | uiout->text (" (vforked process "); | |
e99b03dc | 7833 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7834 | uiout->text ("), "); |
ce78b96d JB |
7835 | return PRINT_SRC_AND_LOC; |
7836 | } | |
7837 | ||
4a64f543 MS |
7838 | /* Implement the "print_one" breakpoint_ops method for vfork |
7839 | catchpoints. */ | |
ce78b96d JB |
7840 | |
7841 | static void | |
a6d9a66e | 7842 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7843 | { |
e29a4733 | 7844 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7845 | struct value_print_options opts; |
79a45e25 | 7846 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7847 | |
7848 | get_user_print_options (&opts); | |
4a64f543 MS |
7849 | /* Field 4, the address, is omitted (which makes the columns not |
7850 | line up too nicely with the headers, but the effect is relatively | |
7851 | readable). */ | |
79a45b7d | 7852 | if (opts.addressprint) |
112e8700 | 7853 | uiout->field_skip ("addr"); |
ce78b96d | 7854 | annotate_field (5); |
112e8700 | 7855 | uiout->text ("vfork"); |
d7e15655 | 7856 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7857 | { |
112e8700 | 7858 | uiout->text (", process "); |
e99b03dc | 7859 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7860 | uiout->spaces (1); |
ce78b96d | 7861 | } |
8ac3646f | 7862 | |
112e8700 SM |
7863 | if (uiout->is_mi_like_p ()) |
7864 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7865 | } |
7866 | ||
7867 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7868 | catchpoints. */ | |
7869 | ||
7870 | static void | |
7871 | print_mention_catch_vfork (struct breakpoint *b) | |
7872 | { | |
7873 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7874 | } | |
7875 | ||
6149aea9 PA |
7876 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7877 | catchpoints. */ | |
7878 | ||
7879 | static void | |
7880 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7881 | { | |
7882 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7883 | print_recreate_thread (b, fp); |
6149aea9 PA |
7884 | } |
7885 | ||
ce78b96d JB |
7886 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7887 | ||
2060206e | 7888 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7889 | |
edcc5120 | 7890 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7891 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7892 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7893 | ||
c1fc2657 | 7894 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7895 | { |
c1fc2657 | 7896 | ~solib_catchpoint () override; |
edcc5120 TT |
7897 | |
7898 | /* True for "catch load", false for "catch unload". */ | |
7899 | unsigned char is_load; | |
7900 | ||
7901 | /* Regular expression to match, if any. COMPILED is only valid when | |
7902 | REGEX is non-NULL. */ | |
7903 | char *regex; | |
2d7cc5c7 | 7904 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7905 | }; |
7906 | ||
c1fc2657 | 7907 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7908 | { |
c1fc2657 | 7909 | xfree (this->regex); |
edcc5120 TT |
7910 | } |
7911 | ||
7912 | static int | |
7913 | insert_catch_solib (struct bp_location *ignore) | |
7914 | { | |
7915 | return 0; | |
7916 | } | |
7917 | ||
7918 | static int | |
73971819 | 7919 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7920 | { |
7921 | return 0; | |
7922 | } | |
7923 | ||
7924 | static int | |
7925 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7926 | const address_space *aspace, |
edcc5120 TT |
7927 | CORE_ADDR bp_addr, |
7928 | const struct target_waitstatus *ws) | |
7929 | { | |
7930 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7931 | struct breakpoint *other; | |
7932 | ||
7933 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7934 | return 1; | |
7935 | ||
7936 | ALL_BREAKPOINTS (other) | |
7937 | { | |
7938 | struct bp_location *other_bl; | |
7939 | ||
7940 | if (other == bl->owner) | |
7941 | continue; | |
7942 | ||
7943 | if (other->type != bp_shlib_event) | |
7944 | continue; | |
7945 | ||
c1fc2657 | 7946 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7947 | continue; |
7948 | ||
7949 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7950 | { | |
7951 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7952 | return 1; | |
7953 | } | |
7954 | } | |
7955 | ||
7956 | return 0; | |
7957 | } | |
7958 | ||
7959 | static void | |
7960 | check_status_catch_solib (struct bpstats *bs) | |
7961 | { | |
7962 | struct solib_catchpoint *self | |
7963 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7964 | |
7965 | if (self->is_load) | |
7966 | { | |
52941706 | 7967 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7968 | { |
7969 | if (!self->regex | |
2d7cc5c7 | 7970 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7971 | return; |
7972 | } | |
7973 | } | |
7974 | else | |
7975 | { | |
6fb16ce6 | 7976 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7977 | { |
7978 | if (!self->regex | |
6fb16ce6 | 7979 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
7980 | return; |
7981 | } | |
7982 | } | |
7983 | ||
7984 | bs->stop = 0; | |
7985 | bs->print_it = print_it_noop; | |
7986 | } | |
7987 | ||
7988 | static enum print_stop_action | |
7989 | print_it_catch_solib (bpstat bs) | |
7990 | { | |
7991 | struct breakpoint *b = bs->breakpoint_at; | |
7992 | struct ui_out *uiout = current_uiout; | |
7993 | ||
7994 | annotate_catchpoint (b->number); | |
f303dbd6 | 7995 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 7996 | if (b->disposition == disp_del) |
112e8700 | 7997 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 7998 | else |
112e8700 SM |
7999 | uiout->text ("Catchpoint "); |
8000 | uiout->field_int ("bkptno", b->number); | |
8001 | uiout->text ("\n"); | |
8002 | if (uiout->is_mi_like_p ()) | |
8003 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8004 | print_solib_event (1); |
8005 | return PRINT_SRC_AND_LOC; | |
8006 | } | |
8007 | ||
8008 | static void | |
8009 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8010 | { | |
8011 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8012 | struct value_print_options opts; | |
8013 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8014 | |
8015 | get_user_print_options (&opts); | |
8016 | /* Field 4, the address, is omitted (which makes the columns not | |
8017 | line up too nicely with the headers, but the effect is relatively | |
8018 | readable). */ | |
8019 | if (opts.addressprint) | |
8020 | { | |
8021 | annotate_field (4); | |
112e8700 | 8022 | uiout->field_skip ("addr"); |
edcc5120 TT |
8023 | } |
8024 | ||
528e1572 | 8025 | std::string msg; |
edcc5120 TT |
8026 | annotate_field (5); |
8027 | if (self->is_load) | |
8028 | { | |
8029 | if (self->regex) | |
528e1572 | 8030 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8031 | else |
528e1572 | 8032 | msg = _("load of library"); |
edcc5120 TT |
8033 | } |
8034 | else | |
8035 | { | |
8036 | if (self->regex) | |
528e1572 | 8037 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8038 | else |
528e1572 | 8039 | msg = _("unload of library"); |
edcc5120 | 8040 | } |
112e8700 | 8041 | uiout->field_string ("what", msg); |
8ac3646f | 8042 | |
112e8700 SM |
8043 | if (uiout->is_mi_like_p ()) |
8044 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8045 | } |
8046 | ||
8047 | static void | |
8048 | print_mention_catch_solib (struct breakpoint *b) | |
8049 | { | |
8050 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8051 | ||
8052 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8053 | self->is_load ? "load" : "unload"); | |
8054 | } | |
8055 | ||
8056 | static void | |
8057 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8058 | { | |
8059 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8060 | ||
8061 | fprintf_unfiltered (fp, "%s %s", | |
8062 | b->disposition == disp_del ? "tcatch" : "catch", | |
8063 | self->is_load ? "load" : "unload"); | |
8064 | if (self->regex) | |
8065 | fprintf_unfiltered (fp, " %s", self->regex); | |
8066 | fprintf_unfiltered (fp, "\n"); | |
8067 | } | |
8068 | ||
8069 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8070 | ||
91985142 MG |
8071 | /* Shared helper function (MI and CLI) for creating and installing |
8072 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8073 | the events to be caught are load events, otherwise they are | |
8074 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8075 | temporary one. If ENABLED is non-zero the catchpoint is | |
8076 | created in an enabled state. */ | |
edcc5120 | 8077 | |
91985142 | 8078 | void |
a121b7c1 | 8079 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8080 | { |
edcc5120 | 8081 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8082 | |
edcc5120 TT |
8083 | if (!arg) |
8084 | arg = ""; | |
f1735a53 | 8085 | arg = skip_spaces (arg); |
edcc5120 | 8086 | |
36bd8eaa | 8087 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8088 | |
8089 | if (*arg != '\0') | |
8090 | { | |
2d7cc5c7 PA |
8091 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8092 | _("Invalid regexp"))); | |
edcc5120 TT |
8093 | c->regex = xstrdup (arg); |
8094 | } | |
8095 | ||
8096 | c->is_load = is_load; | |
36bd8eaa | 8097 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8098 | &catch_solib_breakpoint_ops); |
8099 | ||
c1fc2657 | 8100 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8101 | |
b270e6f9 | 8102 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8103 | } |
8104 | ||
91985142 MG |
8105 | /* A helper function that does all the work for "catch load" and |
8106 | "catch unload". */ | |
8107 | ||
8108 | static void | |
eb4c3f4a | 8109 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8110 | struct cmd_list_element *command) |
8111 | { | |
8112 | int tempflag; | |
8113 | const int enabled = 1; | |
8114 | ||
8115 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8116 | ||
8117 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8118 | } | |
8119 | ||
edcc5120 | 8120 | static void |
eb4c3f4a | 8121 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8122 | struct cmd_list_element *command) |
8123 | { | |
8124 | catch_load_or_unload (arg, from_tty, 1, command); | |
8125 | } | |
8126 | ||
8127 | static void | |
eb4c3f4a | 8128 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8129 | struct cmd_list_element *command) |
8130 | { | |
8131 | catch_load_or_unload (arg, from_tty, 0, command); | |
8132 | } | |
8133 | ||
346774a9 PA |
8134 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8135 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8136 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8137 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8138 | |
ab04a2af | 8139 | void |
346774a9 PA |
8140 | init_catchpoint (struct breakpoint *b, |
8141 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8142 | const char *cond_string, |
c0a91b2b | 8143 | const struct breakpoint_ops *ops) |
c906108c | 8144 | { |
51abb421 | 8145 | symtab_and_line sal; |
6c95b8df | 8146 | sal.pspace = current_program_space; |
c5aa993b | 8147 | |
28010a5d | 8148 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8149 | |
1b36a34b | 8150 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8151 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8152 | } |
8153 | ||
28010a5d | 8154 | void |
b270e6f9 | 8155 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8156 | { |
b270e6f9 | 8157 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8158 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8159 | if (is_tracepoint (b)) |
8160 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8161 | if (!internal) |
8162 | mention (b); | |
76727919 | 8163 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8164 | |
8165 | if (update_gll) | |
44702360 | 8166 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8167 | } |
8168 | ||
9b70b993 | 8169 | static void |
a6d9a66e | 8170 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8171 | int tempflag, const char *cond_string, |
c0a91b2b | 8172 | const struct breakpoint_ops *ops) |
c906108c | 8173 | { |
b270e6f9 | 8174 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8175 | |
b270e6f9 | 8176 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8177 | |
8178 | c->forked_inferior_pid = null_ptid; | |
8179 | ||
b270e6f9 | 8180 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8181 | } |
8182 | ||
fe798b75 JB |
8183 | /* Exec catchpoints. */ |
8184 | ||
b4d90040 | 8185 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8186 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8187 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8188 | ||
c1fc2657 | 8189 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8190 | { |
c1fc2657 | 8191 | ~exec_catchpoint () override; |
b4d90040 PA |
8192 | |
8193 | /* Filename of a program whose exec triggered this catchpoint. | |
8194 | This field is only valid immediately after this catchpoint has | |
8195 | triggered. */ | |
8196 | char *exec_pathname; | |
8197 | }; | |
8198 | ||
c1fc2657 | 8199 | /* Exec catchpoint destructor. */ |
b4d90040 | 8200 | |
c1fc2657 | 8201 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8202 | { |
c1fc2657 | 8203 | xfree (this->exec_pathname); |
b4d90040 PA |
8204 | } |
8205 | ||
77b06cd7 TJB |
8206 | static int |
8207 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8208 | { |
e99b03dc | 8209 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8210 | } |
c906108c | 8211 | |
fe798b75 | 8212 | static int |
73971819 | 8213 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8214 | { |
e99b03dc | 8215 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8216 | } |
c906108c | 8217 | |
fe798b75 | 8218 | static int |
f1310107 | 8219 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8220 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8221 | const struct target_waitstatus *ws) |
fe798b75 | 8222 | { |
b4d90040 PA |
8223 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8224 | ||
f90263c1 TT |
8225 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8226 | return 0; | |
8227 | ||
8228 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8229 | return 1; | |
fe798b75 | 8230 | } |
c906108c | 8231 | |
fe798b75 | 8232 | static enum print_stop_action |
348d480f | 8233 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8234 | { |
36dfb11c | 8235 | struct ui_out *uiout = current_uiout; |
348d480f | 8236 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8237 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8238 | ||
fe798b75 | 8239 | annotate_catchpoint (b->number); |
f303dbd6 | 8240 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8241 | if (b->disposition == disp_del) |
112e8700 | 8242 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8243 | else |
112e8700 SM |
8244 | uiout->text ("Catchpoint "); |
8245 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8246 | { |
112e8700 SM |
8247 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8248 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8249 | } |
112e8700 SM |
8250 | uiout->field_int ("bkptno", b->number); |
8251 | uiout->text (" (exec'd "); | |
8252 | uiout->field_string ("new-exec", c->exec_pathname); | |
8253 | uiout->text ("), "); | |
36dfb11c | 8254 | |
fe798b75 | 8255 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8256 | } |
8257 | ||
fe798b75 | 8258 | static void |
a6d9a66e | 8259 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8260 | { |
b4d90040 | 8261 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8262 | struct value_print_options opts; |
79a45e25 | 8263 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8264 | |
8265 | get_user_print_options (&opts); | |
8266 | ||
8267 | /* Field 4, the address, is omitted (which makes the columns | |
8268 | not line up too nicely with the headers, but the effect | |
8269 | is relatively readable). */ | |
8270 | if (opts.addressprint) | |
112e8700 | 8271 | uiout->field_skip ("addr"); |
fe798b75 | 8272 | annotate_field (5); |
112e8700 | 8273 | uiout->text ("exec"); |
b4d90040 | 8274 | if (c->exec_pathname != NULL) |
fe798b75 | 8275 | { |
112e8700 SM |
8276 | uiout->text (", program \""); |
8277 | uiout->field_string ("what", c->exec_pathname); | |
8278 | uiout->text ("\" "); | |
fe798b75 | 8279 | } |
8ac3646f | 8280 | |
112e8700 SM |
8281 | if (uiout->is_mi_like_p ()) |
8282 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8283 | } |
8284 | ||
8285 | static void | |
8286 | print_mention_catch_exec (struct breakpoint *b) | |
8287 | { | |
8288 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8289 | } | |
8290 | ||
6149aea9 PA |
8291 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8292 | catchpoints. */ | |
8293 | ||
8294 | static void | |
8295 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8296 | { | |
8297 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8298 | print_recreate_thread (b, fp); |
6149aea9 PA |
8299 | } |
8300 | ||
2060206e | 8301 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8302 | |
c906108c | 8303 | static int |
fba45db2 | 8304 | hw_breakpoint_used_count (void) |
c906108c | 8305 | { |
c906108c | 8306 | int i = 0; |
f1310107 TJB |
8307 | struct breakpoint *b; |
8308 | struct bp_location *bl; | |
c906108c SS |
8309 | |
8310 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8311 | { |
d6b74ac4 | 8312 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8313 | for (bl = b->loc; bl; bl = bl->next) |
8314 | { | |
8315 | /* Special types of hardware breakpoints may use more than | |
8316 | one register. */ | |
348d480f | 8317 | i += b->ops->resources_needed (bl); |
f1310107 | 8318 | } |
c5aa993b | 8319 | } |
c906108c SS |
8320 | |
8321 | return i; | |
8322 | } | |
8323 | ||
a1398e0c PA |
8324 | /* Returns the resources B would use if it were a hardware |
8325 | watchpoint. */ | |
8326 | ||
c906108c | 8327 | static int |
a1398e0c | 8328 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8329 | { |
c906108c | 8330 | int i = 0; |
e09342b5 | 8331 | struct bp_location *bl; |
c906108c | 8332 | |
a1398e0c PA |
8333 | if (!breakpoint_enabled (b)) |
8334 | return 0; | |
8335 | ||
8336 | for (bl = b->loc; bl; bl = bl->next) | |
8337 | { | |
8338 | /* Special types of hardware watchpoints may use more than | |
8339 | one register. */ | |
8340 | i += b->ops->resources_needed (bl); | |
8341 | } | |
8342 | ||
8343 | return i; | |
8344 | } | |
8345 | ||
8346 | /* Returns the sum the used resources of all hardware watchpoints of | |
8347 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8348 | the sum of the used resources of all hardware watchpoints of other | |
8349 | types _not_ TYPE. */ | |
8350 | ||
8351 | static int | |
8352 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8353 | enum bptype type, int *other_type_used) | |
8354 | { | |
8355 | int i = 0; | |
8356 | struct breakpoint *b; | |
8357 | ||
c906108c SS |
8358 | *other_type_used = 0; |
8359 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8360 | { |
a1398e0c PA |
8361 | if (b == except) |
8362 | continue; | |
e09342b5 TJB |
8363 | if (!breakpoint_enabled (b)) |
8364 | continue; | |
8365 | ||
a1398e0c PA |
8366 | if (b->type == type) |
8367 | i += hw_watchpoint_use_count (b); | |
8368 | else if (is_hardware_watchpoint (b)) | |
8369 | *other_type_used = 1; | |
e09342b5 TJB |
8370 | } |
8371 | ||
c906108c SS |
8372 | return i; |
8373 | } | |
8374 | ||
c906108c | 8375 | void |
fba45db2 | 8376 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8377 | { |
c5aa993b | 8378 | struct breakpoint *b; |
c906108c SS |
8379 | |
8380 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8381 | { |
cc60f2e3 | 8382 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8383 | { |
b5de0fa7 | 8384 | b->enable_state = bp_call_disabled; |
44702360 | 8385 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8386 | } |
8387 | } | |
c906108c SS |
8388 | } |
8389 | ||
8390 | void | |
fba45db2 | 8391 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8392 | { |
c5aa993b | 8393 | struct breakpoint *b; |
c906108c SS |
8394 | |
8395 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8396 | { |
cc60f2e3 | 8397 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8398 | { |
b5de0fa7 | 8399 | b->enable_state = bp_enabled; |
44702360 | 8400 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8401 | } |
8402 | } | |
c906108c SS |
8403 | } |
8404 | ||
8bea4e01 UW |
8405 | void |
8406 | disable_breakpoints_before_startup (void) | |
8407 | { | |
6c95b8df | 8408 | current_program_space->executing_startup = 1; |
44702360 | 8409 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8410 | } |
8411 | ||
8412 | void | |
8413 | enable_breakpoints_after_startup (void) | |
8414 | { | |
6c95b8df | 8415 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8416 | breakpoint_re_set (); |
8bea4e01 UW |
8417 | } |
8418 | ||
7c16b83e PA |
8419 | /* Create a new single-step breakpoint for thread THREAD, with no |
8420 | locations. */ | |
c906108c | 8421 | |
7c16b83e PA |
8422 | static struct breakpoint * |
8423 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8424 | { | |
b270e6f9 | 8425 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8426 | |
b270e6f9 | 8427 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8428 | &momentary_breakpoint_ops); |
8429 | ||
8430 | b->disposition = disp_donttouch; | |
8431 | b->frame_id = null_frame_id; | |
8432 | ||
8433 | b->thread = thread; | |
8434 | gdb_assert (b->thread != 0); | |
8435 | ||
b270e6f9 | 8436 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8437 | } |
8438 | ||
8439 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8440 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8441 | frame. */ | |
c906108c | 8442 | |
454dafbd | 8443 | breakpoint_up |
a6d9a66e UW |
8444 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8445 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8446 | { |
52f0bd74 | 8447 | struct breakpoint *b; |
edb3359d | 8448 | |
193facb3 JK |
8449 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8450 | tail-called one. */ | |
8451 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8452 | |
06edf0c0 | 8453 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8454 | b->enable_state = bp_enabled; |
8455 | b->disposition = disp_donttouch; | |
818dd999 | 8456 | b->frame_id = frame_id; |
c906108c | 8457 | |
00431a78 | 8458 | b->thread = inferior_thread ()->global_num; |
c906108c | 8459 | |
44702360 | 8460 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8461 | |
454dafbd | 8462 | return breakpoint_up (b); |
c906108c | 8463 | } |
611c83ae | 8464 | |
06edf0c0 | 8465 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8466 | The new breakpoint will have type TYPE, use OPS as its |
8467 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8468 | |
06edf0c0 PA |
8469 | static struct breakpoint * |
8470 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8471 | enum bptype type, | |
a1aa2221 LM |
8472 | const struct breakpoint_ops *ops, |
8473 | int loc_enabled) | |
e58b0e63 PA |
8474 | { |
8475 | struct breakpoint *copy; | |
8476 | ||
06edf0c0 | 8477 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8478 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8479 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8480 | |
a6d9a66e | 8481 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8482 | copy->loc->requested_address = orig->loc->requested_address; |
8483 | copy->loc->address = orig->loc->address; | |
8484 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8485 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8486 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8487 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8488 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8489 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8490 | copy->frame_id = orig->frame_id; |
8491 | copy->thread = orig->thread; | |
6c95b8df | 8492 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8493 | |
8494 | copy->enable_state = bp_enabled; | |
8495 | copy->disposition = disp_donttouch; | |
8496 | copy->number = internal_breakpoint_number--; | |
8497 | ||
44702360 | 8498 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8499 | return copy; |
8500 | } | |
8501 | ||
06edf0c0 PA |
8502 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8503 | ORIG is NULL. */ | |
8504 | ||
8505 | struct breakpoint * | |
8506 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8507 | { | |
8508 | /* If there's nothing to clone, then return nothing. */ | |
8509 | if (orig == NULL) | |
8510 | return NULL; | |
8511 | ||
a1aa2221 | 8512 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8513 | } |
8514 | ||
454dafbd | 8515 | breakpoint_up |
a6d9a66e UW |
8516 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8517 | enum bptype type) | |
611c83ae PA |
8518 | { |
8519 | struct symtab_and_line sal; | |
8520 | ||
8521 | sal = find_pc_line (pc, 0); | |
8522 | sal.pc = pc; | |
8523 | sal.section = find_pc_overlay (pc); | |
8524 | sal.explicit_pc = 1; | |
8525 | ||
a6d9a66e | 8526 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8527 | } |
c906108c | 8528 | \f |
c5aa993b | 8529 | |
c906108c SS |
8530 | /* Tell the user we have just set a breakpoint B. */ |
8531 | ||
8532 | static void | |
fba45db2 | 8533 | mention (struct breakpoint *b) |
c906108c | 8534 | { |
348d480f | 8535 | b->ops->print_mention (b); |
2d33446d | 8536 | current_uiout->text ("\n"); |
c906108c | 8537 | } |
c906108c | 8538 | \f |
c5aa993b | 8539 | |
1a853c52 PA |
8540 | static int bp_loc_is_permanent (struct bp_location *loc); |
8541 | ||
0d381245 | 8542 | static struct bp_location * |
39d61571 | 8543 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8544 | const struct symtab_and_line *sal) |
8545 | { | |
8546 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8547 | CORE_ADDR adjusted_address; |
8548 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8549 | ||
8550 | if (loc_gdbarch == NULL) | |
8551 | loc_gdbarch = b->gdbarch; | |
8552 | ||
8553 | /* Adjust the breakpoint's address prior to allocating a location. | |
8554 | Once we call allocate_bp_location(), that mostly uninitialized | |
8555 | location will be placed on the location chain. Adjustment of the | |
8556 | breakpoint may cause target_read_memory() to be called and we do | |
8557 | not want its scan of the location chain to find a breakpoint and | |
8558 | location that's only been partially initialized. */ | |
8559 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8560 | sal->pc, b->type); | |
0d381245 | 8561 | |
d30113d4 | 8562 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8563 | loc = allocate_bp_location (b); |
d30113d4 JK |
8564 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8565 | tmp = &((*tmp)->next)) | |
0d381245 | 8566 | ; |
d30113d4 | 8567 | loc->next = *tmp; |
0d381245 | 8568 | *tmp = loc; |
3742cc8b | 8569 | |
0d381245 | 8570 | loc->requested_address = sal->pc; |
3742cc8b | 8571 | loc->address = adjusted_address; |
6c95b8df | 8572 | loc->pspace = sal->pspace; |
935676c9 | 8573 | loc->probe.prob = sal->prob; |
729662a5 | 8574 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8575 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8576 | loc->section = sal->section; |
3742cc8b | 8577 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8578 | loc->line_number = sal->line; |
2f202fde | 8579 | loc->symtab = sal->symtab; |
4a27f119 | 8580 | loc->symbol = sal->symbol; |
3467ec66 PA |
8581 | loc->msymbol = sal->msymbol; |
8582 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8583 | |
0ba852ab | 8584 | set_breakpoint_location_function (loc); |
1a853c52 | 8585 | |
6ae88661 LM |
8586 | /* While by definition, permanent breakpoints are already present in the |
8587 | code, we don't mark the location as inserted. Normally one would expect | |
8588 | that GDB could rely on that breakpoint instruction to stop the program, | |
8589 | thus removing the need to insert its own breakpoint, except that executing | |
8590 | the breakpoint instruction can kill the target instead of reporting a | |
8591 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8592 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8593 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8594 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8595 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8596 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8597 | it manually increments the PC, thus avoiding executing the breakpoint | |
8598 | instruction.) */ | |
1a853c52 | 8599 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8600 | loc->permanent = 1; |
1a853c52 | 8601 | |
0d381245 VP |
8602 | return loc; |
8603 | } | |
514f746b AR |
8604 | \f |
8605 | ||
1cf4d951 | 8606 | /* See breakpoint.h. */ |
514f746b | 8607 | |
1cf4d951 PA |
8608 | int |
8609 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8610 | { |
8611 | int len; | |
8612 | CORE_ADDR addr; | |
1afeeb75 | 8613 | const gdb_byte *bpoint; |
514f746b AR |
8614 | gdb_byte *target_mem; |
8615 | ||
1cf4d951 PA |
8616 | addr = address; |
8617 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8618 | ||
8619 | /* Software breakpoints unsupported? */ | |
8620 | if (bpoint == NULL) | |
8621 | return 0; | |
8622 | ||
224c3ddb | 8623 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8624 | |
8625 | /* Enable the automatic memory restoration from breakpoints while | |
8626 | we read the memory. Otherwise we could say about our temporary | |
8627 | breakpoints they are permanent. */ | |
cb85b21b TT |
8628 | scoped_restore restore_memory |
8629 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8630 | |
8631 | if (target_read_memory (address, target_mem, len) == 0 | |
8632 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8633 | return 1; |
1cf4d951 | 8634 | |
cb85b21b | 8635 | return 0; |
1cf4d951 PA |
8636 | } |
8637 | ||
8638 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8639 | return 0 otherwise. */ | |
8640 | ||
8641 | static int | |
8642 | bp_loc_is_permanent (struct bp_location *loc) | |
8643 | { | |
514f746b AR |
8644 | gdb_assert (loc != NULL); |
8645 | ||
cb1e4e32 PA |
8646 | /* If we have a non-breakpoint-backed catchpoint or a software |
8647 | watchpoint, just return 0. We should not attempt to read from | |
8648 | the addresses the locations of these breakpoint types point to. | |
8649 | program_breakpoint_here_p, below, will attempt to read | |
244558af | 8650 | memory. */ |
cb1e4e32 | 8651 | if (!bl_address_is_meaningful (loc)) |
244558af LM |
8652 | return 0; |
8653 | ||
5ed8105e | 8654 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8655 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8656 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8657 | } |
8658 | ||
e7e0cddf SS |
8659 | /* Build a command list for the dprintf corresponding to the current |
8660 | settings of the dprintf style options. */ | |
8661 | ||
8662 | static void | |
8663 | update_dprintf_command_list (struct breakpoint *b) | |
8664 | { | |
8665 | char *dprintf_args = b->extra_string; | |
8666 | char *printf_line = NULL; | |
8667 | ||
8668 | if (!dprintf_args) | |
8669 | return; | |
8670 | ||
8671 | dprintf_args = skip_spaces (dprintf_args); | |
8672 | ||
8673 | /* Allow a comma, as it may have terminated a location, but don't | |
8674 | insist on it. */ | |
8675 | if (*dprintf_args == ',') | |
8676 | ++dprintf_args; | |
8677 | dprintf_args = skip_spaces (dprintf_args); | |
8678 | ||
8679 | if (*dprintf_args != '"') | |
8680 | error (_("Bad format string, missing '\"'.")); | |
8681 | ||
d3ce09f5 | 8682 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8683 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8684 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8685 | { |
8686 | if (!dprintf_function) | |
8687 | error (_("No function supplied for dprintf call")); | |
8688 | ||
8689 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8690 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8691 | dprintf_function, | |
8692 | dprintf_channel, | |
8693 | dprintf_args); | |
8694 | else | |
8695 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8696 | dprintf_function, | |
8697 | dprintf_args); | |
8698 | } | |
d3ce09f5 SS |
8699 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8700 | { | |
8701 | if (target_can_run_breakpoint_commands ()) | |
8702 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8703 | else | |
8704 | { | |
8705 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8706 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8707 | } | |
8708 | } | |
e7e0cddf SS |
8709 | else |
8710 | internal_error (__FILE__, __LINE__, | |
8711 | _("Invalid dprintf style.")); | |
8712 | ||
f28045c2 | 8713 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8714 | |
12973681 TT |
8715 | /* Manufacture a printf sequence. */ |
8716 | struct command_line *printf_cmd_line | |
8717 | = new struct command_line (simple_control, printf_line); | |
8718 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8719 | command_lines_deleter ())); | |
e7e0cddf SS |
8720 | } |
8721 | ||
8722 | /* Update all dprintf commands, making their command lists reflect | |
8723 | current style settings. */ | |
8724 | ||
8725 | static void | |
eb4c3f4a | 8726 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8727 | struct cmd_list_element *c) |
8728 | { | |
8729 | struct breakpoint *b; | |
8730 | ||
8731 | ALL_BREAKPOINTS (b) | |
8732 | { | |
8733 | if (b->type == bp_dprintf) | |
8734 | update_dprintf_command_list (b); | |
8735 | } | |
8736 | } | |
c3f6f71d | 8737 | |
f00aae0f KS |
8738 | /* Create a breakpoint with SAL as location. Use LOCATION |
8739 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8740 | as condition expression. If LOCATION is NULL then create an |
8741 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8742 | |
8743 | static void | |
d9b3f62e | 8744 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8745 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8746 | event_location_up &&location, |
e1e01040 PA |
8747 | gdb::unique_xmalloc_ptr<char> filter, |
8748 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8749 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8750 | enum bptype type, enum bpdisp disposition, |
8751 | int thread, int task, int ignore_count, | |
c0a91b2b | 8752 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8753 | int enabled, int internal, unsigned flags, |
8754 | int display_canonical) | |
018d34a4 | 8755 | { |
0d381245 | 8756 | int i; |
018d34a4 VP |
8757 | |
8758 | if (type == bp_hardware_breakpoint) | |
8759 | { | |
fbbd034e AS |
8760 | int target_resources_ok; |
8761 | ||
8762 | i = hw_breakpoint_used_count (); | |
8763 | target_resources_ok = | |
8764 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8765 | i + 1, 0); |
8766 | if (target_resources_ok == 0) | |
8767 | error (_("No hardware breakpoint support in the target.")); | |
8768 | else if (target_resources_ok < 0) | |
8769 | error (_("Hardware breakpoints used exceeds limit.")); | |
8770 | } | |
8771 | ||
6c5b2ebe | 8772 | gdb_assert (!sals.empty ()); |
6c95b8df | 8773 | |
6c5b2ebe | 8774 | for (const auto &sal : sals) |
0d381245 | 8775 | { |
0d381245 VP |
8776 | struct bp_location *loc; |
8777 | ||
8778 | if (from_tty) | |
5af949e3 UW |
8779 | { |
8780 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8781 | if (!loc_gdbarch) | |
8782 | loc_gdbarch = gdbarch; | |
8783 | ||
8784 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8785 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8786 | } |
0d381245 | 8787 | |
6c5b2ebe | 8788 | if (&sal == &sals[0]) |
0d381245 | 8789 | { |
d9b3f62e | 8790 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8791 | b->thread = thread; |
4a306c9a | 8792 | b->task = task; |
855a6e68 | 8793 | |
e1e01040 PA |
8794 | b->cond_string = cond_string.release (); |
8795 | b->extra_string = extra_string.release (); | |
0d381245 | 8796 | b->ignore_count = ignore_count; |
41447f92 | 8797 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8798 | b->disposition = disposition; |
6c95b8df | 8799 | |
44f238bb PA |
8800 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8801 | b->loc->inserted = 1; | |
8802 | ||
0fb4aa4b PA |
8803 | if (type == bp_static_tracepoint) |
8804 | { | |
d9b3f62e | 8805 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8806 | struct static_tracepoint_marker marker; |
8807 | ||
983af33b | 8808 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8809 | { |
8810 | /* We already know the marker exists, otherwise, we | |
8811 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8812 | const char *p |
8813 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8814 | const char *endp; |
0fb4aa4b | 8815 | |
f1735a53 | 8816 | p = skip_spaces (p); |
0fb4aa4b | 8817 | |
f1735a53 | 8818 | endp = skip_to_space (p); |
0fb4aa4b | 8819 | |
5d9310c4 | 8820 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8821 | |
3e43a32a MS |
8822 | printf_filtered (_("Probed static tracepoint " |
8823 | "marker \"%s\"\n"), | |
5d9310c4 | 8824 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8825 | } |
8826 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8827 | { | |
5d9310c4 | 8828 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8829 | |
3e43a32a MS |
8830 | printf_filtered (_("Probed static tracepoint " |
8831 | "marker \"%s\"\n"), | |
5d9310c4 | 8832 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8833 | } |
8834 | else | |
3e43a32a MS |
8835 | warning (_("Couldn't determine the static " |
8836 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8837 | } |
8838 | ||
0d381245 VP |
8839 | loc = b->loc; |
8840 | } | |
8841 | else | |
018d34a4 | 8842 | { |
39d61571 | 8843 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8844 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8845 | loc->inserted = 1; | |
0d381245 VP |
8846 | } |
8847 | ||
8848 | if (b->cond_string) | |
8849 | { | |
bbc13ae3 KS |
8850 | const char *arg = b->cond_string; |
8851 | ||
1bb9788d TT |
8852 | loc->cond = parse_exp_1 (&arg, loc->address, |
8853 | block_for_pc (loc->address), 0); | |
0d381245 | 8854 | if (*arg) |
588ae58c | 8855 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8856 | } |
e7e0cddf SS |
8857 | |
8858 | /* Dynamic printf requires and uses additional arguments on the | |
8859 | command line, otherwise it's an error. */ | |
8860 | if (type == bp_dprintf) | |
8861 | { | |
8862 | if (b->extra_string) | |
8863 | update_dprintf_command_list (b); | |
8864 | else | |
8865 | error (_("Format string required")); | |
8866 | } | |
8867 | else if (b->extra_string) | |
588ae58c | 8868 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8869 | } |
018d34a4 | 8870 | |
56435ebe | 8871 | b->display_canonical = display_canonical; |
f00aae0f | 8872 | if (location != NULL) |
d28cd78a | 8873 | b->location = std::move (location); |
018d34a4 | 8874 | else |
d28cd78a | 8875 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8876 | b->filter = filter.release (); |
d9b3f62e | 8877 | } |
018d34a4 | 8878 | |
d9b3f62e PA |
8879 | static void |
8880 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8881 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8882 | event_location_up &&location, |
e1e01040 PA |
8883 | gdb::unique_xmalloc_ptr<char> filter, |
8884 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8885 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8886 | enum bptype type, enum bpdisp disposition, |
8887 | int thread, int task, int ignore_count, | |
c0a91b2b | 8888 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8889 | int enabled, int internal, unsigned flags, |
8890 | int display_canonical) | |
d9b3f62e | 8891 | { |
a5e364af | 8892 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8893 | |
a5e364af | 8894 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8895 | sals, std::move (location), |
e1e01040 PA |
8896 | std::move (filter), |
8897 | std::move (cond_string), | |
8898 | std::move (extra_string), | |
d9b3f62e PA |
8899 | type, disposition, |
8900 | thread, task, ignore_count, | |
8901 | ops, from_tty, | |
44f238bb PA |
8902 | enabled, internal, flags, |
8903 | display_canonical); | |
d9b3f62e | 8904 | |
b270e6f9 | 8905 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8906 | } |
8907 | ||
8908 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8909 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8910 | value. COND_STRING, if not NULL, specified the condition to be | |
8911 | used for all breakpoints. Essentially the only case where | |
8912 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8913 | function. In that case, it's still not possible to specify | |
8914 | separate conditions for different overloaded functions, so | |
8915 | we take just a single condition string. | |
8916 | ||
c3f6f71d | 8917 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8918 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8919 | array contents). If the function fails (error() is called), the |
8920 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8921 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8922 | |
8923 | static void | |
8cdf0e15 | 8924 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8925 | struct linespec_result *canonical, |
e1e01040 PA |
8926 | gdb::unique_xmalloc_ptr<char> cond_string, |
8927 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8928 | enum bptype type, enum bpdisp disposition, |
8929 | int thread, int task, int ignore_count, | |
c0a91b2b | 8930 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8931 | int enabled, int internal, unsigned flags) |
c906108c | 8932 | { |
f8eba3c6 | 8933 | if (canonical->pre_expanded) |
6c5b2ebe | 8934 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8935 | |
6c5b2ebe | 8936 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8937 | { |
f00aae0f | 8938 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8939 | 'break', without arguments. */ |
ffc2605c | 8940 | event_location_up location |
f00aae0f | 8941 | = (canonical->location != NULL |
8e9e35b1 | 8942 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8943 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8944 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8945 | |
6c5b2ebe | 8946 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8947 | std::move (location), |
e1e01040 PA |
8948 | std::move (filter_string), |
8949 | std::move (cond_string), | |
8950 | std::move (extra_string), | |
e7e0cddf | 8951 | type, disposition, |
84f4c1fe | 8952 | thread, task, ignore_count, ops, |
44f238bb | 8953 | from_tty, enabled, internal, flags, |
56435ebe | 8954 | canonical->special_display); |
c3f6f71d | 8955 | } |
c3f6f71d | 8956 | } |
c906108c | 8957 | |
f00aae0f | 8958 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8959 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8960 | addresses found. LOCATION points to the end of the SAL (for |
8961 | linespec locations). | |
9998af43 TJB |
8962 | |
8963 | The array and the line spec strings are allocated on the heap, it is | |
8964 | the caller's responsibility to free them. */ | |
c906108c | 8965 | |
b9362cc7 | 8966 | static void |
f00aae0f | 8967 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8968 | struct linespec_result *canonical) |
c3f6f71d | 8969 | { |
f00aae0f KS |
8970 | struct symtab_and_line cursal; |
8971 | ||
8972 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8973 | { | |
a20714ff | 8974 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8975 | |
a20714ff | 8976 | if (spec == NULL) |
f00aae0f KS |
8977 | { |
8978 | /* The last displayed codepoint, if it's valid, is our default | |
8979 | breakpoint address. */ | |
8980 | if (last_displayed_sal_is_valid ()) | |
8981 | { | |
f00aae0f KS |
8982 | /* Set sal's pspace, pc, symtab, and line to the values |
8983 | corresponding to the last call to print_frame_info. | |
8984 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8985 | as the breakpoint line number is inappropriate otherwise. | |
8986 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8987 | symtab_and_line sal = get_last_displayed_sal (); |
8988 | CORE_ADDR pc = sal.pc; | |
8989 | ||
f00aae0f KS |
8990 | sal = find_pc_line (pc, 0); |
8991 | ||
8992 | /* "break" without arguments is equivalent to "break *PC" | |
8993 | where PC is the last displayed codepoint's address. So | |
8994 | make sure to set sal.explicit_pc to prevent GDB from | |
8995 | trying to expand the list of sals to include all other | |
8996 | instances with the same symtab and line. */ | |
8997 | sal.pc = pc; | |
8998 | sal.explicit_pc = 1; | |
8999 | ||
6c5b2ebe PA |
9000 | struct linespec_sals lsal; |
9001 | lsal.sals = {sal}; | |
f00aae0f KS |
9002 | lsal.canonical = NULL; |
9003 | ||
6c5b2ebe | 9004 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9005 | return; |
9006 | } | |
9007 | else | |
9008 | error (_("No default breakpoint address now.")); | |
c906108c | 9009 | } |
c906108c | 9010 | } |
f00aae0f KS |
9011 | |
9012 | /* Force almost all breakpoints to be in terms of the | |
9013 | current_source_symtab (which is decode_line_1's default). | |
9014 | This should produce the results we want almost all of the | |
9015 | time while leaving default_breakpoint_* alone. | |
9016 | ||
9017 | ObjC: However, don't match an Objective-C method name which | |
9018 | may have a '+' or '-' succeeded by a '['. */ | |
9019 | cursal = get_current_source_symtab_and_line (); | |
9020 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9021 | { |
a20714ff | 9022 | const char *spec = NULL; |
cc80f267 | 9023 | |
f00aae0f | 9024 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9025 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9026 | |
f00aae0f | 9027 | if (!cursal.symtab |
a20714ff PA |
9028 | || (spec != NULL |
9029 | && strchr ("+-", spec[0]) != NULL | |
9030 | && spec[1] != '[')) | |
f00aae0f | 9031 | { |
c2f4122d | 9032 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9033 | get_last_displayed_symtab (), |
9034 | get_last_displayed_line (), | |
9035 | canonical, NULL, NULL); | |
9036 | return; | |
9037 | } | |
c906108c | 9038 | } |
f00aae0f | 9039 | |
c2f4122d | 9040 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9041 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9042 | } |
c906108c | 9043 | |
c906108c | 9044 | |
c3f6f71d | 9045 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9046 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9047 | |
b9362cc7 | 9048 | static void |
6c5b2ebe | 9049 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9050 | { |
6c5b2ebe PA |
9051 | for (auto &sal : sals) |
9052 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9053 | } |
9054 | ||
7a697b8d SS |
9055 | /* Fast tracepoints may have restrictions on valid locations. For |
9056 | instance, a fast tracepoint using a jump instead of a trap will | |
9057 | likely have to overwrite more bytes than a trap would, and so can | |
9058 | only be placed where the instruction is longer than the jump, or a | |
9059 | multi-instruction sequence does not have a jump into the middle of | |
9060 | it, etc. */ | |
9061 | ||
9062 | static void | |
9063 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9064 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9065 | { |
6c5b2ebe | 9066 | for (const auto &sal : sals) |
7a697b8d | 9067 | { |
f8eba3c6 TT |
9068 | struct gdbarch *sarch; |
9069 | ||
6c5b2ebe | 9070 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9071 | /* We fall back to GDBARCH if there is no architecture |
9072 | associated with SAL. */ | |
9073 | if (sarch == NULL) | |
9074 | sarch = gdbarch; | |
281d762b TT |
9075 | std::string msg; |
9076 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9077 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9078 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9079 | } |
9080 | } | |
9081 | ||
018d34a4 VP |
9082 | /* Given TOK, a string specification of condition and thread, as |
9083 | accepted by the 'break' command, extract the condition | |
9084 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9085 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9086 | If no condition is found, *COND_STRING is set to NULL. |
9087 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9088 | |
9089 | static void | |
bbc13ae3 | 9090 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9091 | char **cond_string, int *thread, int *task, |
9092 | char **rest) | |
018d34a4 VP |
9093 | { |
9094 | *cond_string = NULL; | |
9095 | *thread = -1; | |
ed1d1739 KS |
9096 | *task = 0; |
9097 | *rest = NULL; | |
9098 | ||
018d34a4 VP |
9099 | while (tok && *tok) |
9100 | { | |
bbc13ae3 | 9101 | const char *end_tok; |
018d34a4 | 9102 | int toklen; |
bbc13ae3 KS |
9103 | const char *cond_start = NULL; |
9104 | const char *cond_end = NULL; | |
cc59ec59 | 9105 | |
f1735a53 | 9106 | tok = skip_spaces (tok); |
e7e0cddf SS |
9107 | |
9108 | if ((*tok == '"' || *tok == ',') && rest) | |
9109 | { | |
9110 | *rest = savestring (tok, strlen (tok)); | |
9111 | return; | |
9112 | } | |
9113 | ||
f1735a53 | 9114 | end_tok = skip_to_space (tok); |
d634f2de | 9115 | |
018d34a4 | 9116 | toklen = end_tok - tok; |
d634f2de | 9117 | |
018d34a4 VP |
9118 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9119 | { | |
9120 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9121 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9122 | cond_end = tok; |
d634f2de | 9123 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9124 | } |
9125 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9126 | { | |
5d5658a1 PA |
9127 | const char *tmptok; |
9128 | struct thread_info *thr; | |
d634f2de | 9129 | |
018d34a4 | 9130 | tok = end_tok + 1; |
5d5658a1 | 9131 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9132 | if (tok == tmptok) |
9133 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9134 | *thread = thr->global_num; |
bbc13ae3 | 9135 | tok = tmptok; |
018d34a4 | 9136 | } |
4a306c9a JB |
9137 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9138 | { | |
9139 | char *tmptok; | |
9140 | ||
9141 | tok = end_tok + 1; | |
bbc13ae3 | 9142 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9143 | if (tok == tmptok) |
9144 | error (_("Junk after task keyword.")); | |
9145 | if (!valid_task_id (*task)) | |
b6199126 | 9146 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9147 | tok = tmptok; |
4a306c9a | 9148 | } |
e7e0cddf SS |
9149 | else if (rest) |
9150 | { | |
9151 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9152 | return; |
e7e0cddf | 9153 | } |
018d34a4 VP |
9154 | else |
9155 | error (_("Junk at end of arguments.")); | |
9156 | } | |
9157 | } | |
9158 | ||
0fb4aa4b PA |
9159 | /* Decode a static tracepoint marker spec. */ |
9160 | ||
6c5b2ebe | 9161 | static std::vector<symtab_and_line> |
f00aae0f | 9162 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9163 | { |
f00aae0f KS |
9164 | const char *p = &(*arg_p)[3]; |
9165 | const char *endp; | |
0fb4aa4b | 9166 | |
f1735a53 | 9167 | p = skip_spaces (p); |
0fb4aa4b | 9168 | |
f1735a53 | 9169 | endp = skip_to_space (p); |
0fb4aa4b | 9170 | |
81b1e71c | 9171 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9172 | |
5d9310c4 SM |
9173 | std::vector<static_tracepoint_marker> markers |
9174 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9175 | if (markers.empty ()) | |
81b1e71c TT |
9176 | error (_("No known static tracepoint marker named %s"), |
9177 | marker_str.c_str ()); | |
0fb4aa4b | 9178 | |
6c5b2ebe | 9179 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9180 | sals.reserve (markers.size ()); |
0fb4aa4b | 9181 | |
5d9310c4 | 9182 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9183 | { |
5d9310c4 SM |
9184 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9185 | sal.pc = marker.address; | |
6c5b2ebe | 9186 | sals.push_back (sal); |
5d9310c4 | 9187 | } |
0fb4aa4b | 9188 | |
0fb4aa4b PA |
9189 | *arg_p = endp; |
9190 | return sals; | |
9191 | } | |
9192 | ||
f00aae0f | 9193 | /* See breakpoint.h. */ |
0101ce28 | 9194 | |
8cdf0e15 VP |
9195 | int |
9196 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9197 | const struct event_location *location, |
9198 | const char *cond_string, | |
9199 | int thread, const char *extra_string, | |
f00aae0f | 9200 | int parse_extra, |
0fb4aa4b | 9201 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9202 | int ignore_count, |
9203 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9204 | const struct breakpoint_ops *ops, |
44f238bb PA |
9205 | int from_tty, int enabled, int internal, |
9206 | unsigned flags) | |
c3f6f71d | 9207 | { |
7efd8fc2 | 9208 | struct linespec_result canonical; |
0101ce28 | 9209 | int pending = 0; |
4a306c9a | 9210 | int task = 0; |
86b17b60 | 9211 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9212 | |
348d480f PA |
9213 | gdb_assert (ops != NULL); |
9214 | ||
f00aae0f KS |
9215 | /* If extra_string isn't useful, set it to NULL. */ |
9216 | if (extra_string != NULL && *extra_string == '\0') | |
9217 | extra_string = NULL; | |
9218 | ||
a70b8144 | 9219 | try |
b78a6381 | 9220 | { |
f00aae0f | 9221 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9222 | } |
230d2906 | 9223 | catch (const gdb_exception_error &e) |
0101ce28 | 9224 | { |
492d29ea PA |
9225 | /* If caller is interested in rc value from parse, set |
9226 | value. */ | |
9227 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9228 | { |
05ff989b AC |
9229 | /* If pending breakpoint support is turned off, throw |
9230 | error. */ | |
fa8d40ab JJ |
9231 | |
9232 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9233 | throw; |
723a2275 VP |
9234 | |
9235 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9236 | |
05ff989b AC |
9237 | /* If pending breakpoint support is auto query and the user |
9238 | selects no, then simply return the error code. */ | |
059fb39f | 9239 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9240 | && !nquery (_("Make %s pending on future shared library load? "), |
9241 | bptype_string (type_wanted))) | |
fd9b8c24 | 9242 | return 0; |
fa8d40ab | 9243 | |
05ff989b AC |
9244 | /* At this point, either the user was queried about setting |
9245 | a pending breakpoint and selected yes, or pending | |
9246 | breakpoint behavior is on and thus a pending breakpoint | |
9247 | is defaulted on behalf of the user. */ | |
f00aae0f | 9248 | pending = 1; |
0101ce28 | 9249 | } |
492d29ea | 9250 | else |
eedc3f4f | 9251 | throw; |
0101ce28 | 9252 | } |
492d29ea | 9253 | |
6c5b2ebe | 9254 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9255 | return 0; |
c3f6f71d | 9256 | |
c3f6f71d JM |
9257 | /* Resolve all line numbers to PC's and verify that the addresses |
9258 | are ok for the target. */ | |
0101ce28 | 9259 | if (!pending) |
f8eba3c6 | 9260 | { |
6c5b2ebe PA |
9261 | for (auto &lsal : canonical.lsals) |
9262 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9263 | } |
c3f6f71d | 9264 | |
7a697b8d | 9265 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9266 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9267 | { |
6c5b2ebe PA |
9268 | for (const auto &lsal : canonical.lsals) |
9269 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9270 | } |
7a697b8d | 9271 | |
c3f6f71d JM |
9272 | /* Verify that condition can be parsed, before setting any |
9273 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9274 | breakpoint. */ |
0101ce28 | 9275 | if (!pending) |
c3f6f71d | 9276 | { |
e1e01040 PA |
9277 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9278 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9279 | ||
f00aae0f | 9280 | if (parse_extra) |
72b2ff0e | 9281 | { |
0878d0fa | 9282 | char *rest; |
e1e01040 | 9283 | char *cond; |
52d361e1 | 9284 | |
6c5b2ebe | 9285 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9286 | |
0878d0fa YQ |
9287 | /* Here we only parse 'arg' to separate condition |
9288 | from thread number, so parsing in context of first | |
9289 | sal is OK. When setting the breakpoint we'll | |
9290 | re-parse it in context of each sal. */ | |
9291 | ||
6c5b2ebe | 9292 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9293 | &cond, &thread, &task, &rest); |
9294 | cond_string_copy.reset (cond); | |
9295 | extra_string_copy.reset (rest); | |
72b2ff0e | 9296 | } |
2f069f6f | 9297 | else |
72b2ff0e | 9298 | { |
f00aae0f KS |
9299 | if (type_wanted != bp_dprintf |
9300 | && extra_string != NULL && *extra_string != '\0') | |
9301 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9302 | |
9303 | /* Create a private copy of condition string. */ | |
9304 | if (cond_string) | |
e1e01040 | 9305 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9306 | /* Create a private copy of any extra string. */ |
9307 | if (extra_string) | |
e1e01040 | 9308 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9309 | } |
0fb4aa4b | 9310 | |
52d361e1 | 9311 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9312 | std::move (cond_string_copy), |
9313 | std::move (extra_string_copy), | |
9314 | type_wanted, | |
d9b3f62e PA |
9315 | tempflag ? disp_del : disp_donttouch, |
9316 | thread, task, ignore_count, ops, | |
44f238bb | 9317 | from_tty, enabled, internal, flags); |
c906108c | 9318 | } |
0101ce28 JJ |
9319 | else |
9320 | { | |
a5e364af | 9321 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9322 | |
a5e364af | 9323 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9324 | b->location = copy_event_location (location); |
bfccc43c | 9325 | |
f00aae0f KS |
9326 | if (parse_extra) |
9327 | b->cond_string = NULL; | |
e12c7713 MK |
9328 | else |
9329 | { | |
9330 | /* Create a private copy of condition string. */ | |
e1e01040 | 9331 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9332 | b->thread = thread; |
e12c7713 | 9333 | } |
f00aae0f KS |
9334 | |
9335 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9336 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9337 | b->ignore_count = ignore_count; |
0101ce28 | 9338 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9339 | b->condition_not_parsed = 1; |
41447f92 | 9340 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9341 | if ((type_wanted != bp_breakpoint |
9342 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9343 | b->pspace = current_program_space; |
8bea4e01 | 9344 | |
b270e6f9 | 9345 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9346 | } |
9347 | ||
6c5b2ebe | 9348 | if (canonical.lsals.size () > 1) |
95a42b64 | 9349 | { |
3e43a32a MS |
9350 | warning (_("Multiple breakpoints were set.\nUse the " |
9351 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9352 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9353 | } |
9354 | ||
44702360 | 9355 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9356 | |
9357 | return 1; | |
c3f6f71d | 9358 | } |
c906108c | 9359 | |
348d480f | 9360 | /* Set a breakpoint. |
72b2ff0e VP |
9361 | ARG is a string describing breakpoint address, |
9362 | condition, and thread. | |
9363 | FLAG specifies if a breakpoint is hardware on, | |
9364 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9365 | and BP_TEMPFLAG. */ | |
348d480f | 9366 | |
98deb0da | 9367 | static void |
f2fc3015 | 9368 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9369 | { |
72b2ff0e | 9370 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9371 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9372 | ? bp_hardware_breakpoint | |
9373 | : bp_breakpoint); | |
55aa24fb | 9374 | struct breakpoint_ops *ops; |
f00aae0f | 9375 | |
ffc2605c | 9376 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9377 | |
9378 | /* Matching breakpoints on probes. */ | |
5b56227b | 9379 | if (location != NULL |
ffc2605c | 9380 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9381 | ops = &bkpt_probe_breakpoint_ops; |
9382 | else | |
9383 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9384 | |
8cdf0e15 | 9385 | create_breakpoint (get_current_arch (), |
ffc2605c | 9386 | location.get (), |
f00aae0f | 9387 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9388 | tempflag, type_wanted, |
8cdf0e15 VP |
9389 | 0 /* Ignore count */, |
9390 | pending_break_support, | |
55aa24fb | 9391 | ops, |
8cdf0e15 | 9392 | from_tty, |
84f4c1fe | 9393 | 1 /* enabled */, |
44f238bb PA |
9394 | 0 /* internal */, |
9395 | 0); | |
c906108c SS |
9396 | } |
9397 | ||
c906108c SS |
9398 | /* Helper function for break_command_1 and disassemble_command. */ |
9399 | ||
9400 | void | |
fba45db2 | 9401 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9402 | { |
9403 | CORE_ADDR pc; | |
9404 | ||
9405 | if (sal->pc == 0 && sal->symtab != NULL) | |
9406 | { | |
9407 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9408 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9409 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9410 | sal->pc = pc; |
6a048695 | 9411 | |
4a64f543 MS |
9412 | /* If this SAL corresponds to a breakpoint inserted using a line |
9413 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9414 | if (sal->explicit_line) |
059acae7 | 9415 | skip_prologue_sal (sal); |
c906108c SS |
9416 | } |
9417 | ||
9418 | if (sal->section == 0 && sal->symtab != NULL) | |
9419 | { | |
346d1dfe | 9420 | const struct blockvector *bv; |
3977b71f | 9421 | const struct block *b; |
c5aa993b | 9422 | struct symbol *sym; |
c906108c | 9423 | |
43f3e411 DE |
9424 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9425 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9426 | if (bv != NULL) |
9427 | { | |
7f0df278 | 9428 | sym = block_linkage_function (b); |
c906108c SS |
9429 | if (sym != NULL) |
9430 | { | |
eb822aa6 DE |
9431 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9432 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9433 | sym); | |
c906108c SS |
9434 | } |
9435 | else | |
9436 | { | |
4a64f543 MS |
9437 | /* It really is worthwhile to have the section, so we'll |
9438 | just have to look harder. This case can be executed | |
9439 | if we have line numbers but no functions (as can | |
9440 | happen in assembly source). */ | |
c906108c | 9441 | |
5ed8105e | 9442 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9443 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9444 | |
5ed8105e | 9445 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9446 | if (msym.minsym) |
efd66ac6 | 9447 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9448 | } |
9449 | } | |
9450 | } | |
9451 | } | |
9452 | ||
9453 | void | |
0b39b52e | 9454 | break_command (const char *arg, int from_tty) |
c906108c | 9455 | { |
db107f19 | 9456 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9457 | } |
9458 | ||
c906108c | 9459 | void |
0b39b52e | 9460 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9461 | { |
db107f19 | 9462 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9463 | } |
9464 | ||
c906108c | 9465 | static void |
0b39b52e | 9466 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9467 | { |
db107f19 | 9468 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9469 | } |
9470 | ||
9471 | static void | |
0b39b52e | 9472 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9473 | { |
db107f19 | 9474 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9475 | } |
9476 | ||
9477 | static void | |
ee7ddd71 | 9478 | stop_command (const char *arg, int from_tty) |
c906108c | 9479 | { |
a3f17187 | 9480 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9481 | Usage: stop in <function | address>\n\ |
a3f17187 | 9482 | stop at <line>\n")); |
c906108c SS |
9483 | } |
9484 | ||
9485 | static void | |
4495129a | 9486 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9487 | { |
9488 | int badInput = 0; | |
9489 | ||
cafb3438 | 9490 | if (arg == NULL) |
c906108c SS |
9491 | badInput = 1; |
9492 | else if (*arg != '*') | |
9493 | { | |
4495129a | 9494 | const char *argptr = arg; |
c906108c SS |
9495 | int hasColon = 0; |
9496 | ||
4a64f543 | 9497 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9498 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9499 | function/method name. */ |
c906108c | 9500 | while (*argptr && !hasColon) |
c5aa993b JM |
9501 | { |
9502 | hasColon = (*argptr == ':'); | |
9503 | argptr++; | |
9504 | } | |
c906108c SS |
9505 | |
9506 | if (hasColon) | |
c5aa993b | 9507 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9508 | else |
c5aa993b | 9509 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9510 | } |
9511 | ||
9512 | if (badInput) | |
a3f17187 | 9513 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9514 | else |
db107f19 | 9515 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9516 | } |
9517 | ||
9518 | static void | |
4495129a | 9519 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9520 | { |
9521 | int badInput = 0; | |
9522 | ||
cafb3438 | 9523 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9524 | badInput = 1; |
9525 | else | |
9526 | { | |
4495129a | 9527 | const char *argptr = arg; |
c906108c SS |
9528 | int hasColon = 0; |
9529 | ||
4a64f543 MS |
9530 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9531 | it is probably a line number. */ | |
c906108c | 9532 | while (*argptr && !hasColon) |
c5aa993b JM |
9533 | { |
9534 | hasColon = (*argptr == ':'); | |
9535 | argptr++; | |
9536 | } | |
c906108c SS |
9537 | |
9538 | if (hasColon) | |
c5aa993b | 9539 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9540 | else |
c5aa993b | 9541 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9542 | } |
9543 | ||
9544 | if (badInput) | |
65e65158 | 9545 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9546 | else |
db107f19 | 9547 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9548 | } |
9549 | ||
e7e0cddf SS |
9550 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9551 | with a prewired command list consisting of a single output command, | |
9552 | built from extra arguments supplied on the dprintf command | |
9553 | line. */ | |
9554 | ||
da821c7b | 9555 | static void |
0b39b52e | 9556 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9557 | { |
ffc2605c | 9558 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9559 | |
9560 | /* If non-NULL, ARG should have been advanced past the location; | |
9561 | the next character must be ','. */ | |
9562 | if (arg != NULL) | |
9563 | { | |
9564 | if (arg[0] != ',' || arg[1] == '\0') | |
9565 | error (_("Format string required")); | |
9566 | else | |
9567 | { | |
9568 | /* Skip the comma. */ | |
9569 | ++arg; | |
9570 | } | |
9571 | } | |
9572 | ||
e7e0cddf | 9573 | create_breakpoint (get_current_arch (), |
ffc2605c | 9574 | location.get (), |
f00aae0f | 9575 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9576 | 0, bp_dprintf, |
9577 | 0 /* Ignore count */, | |
9578 | pending_break_support, | |
9579 | &dprintf_breakpoint_ops, | |
9580 | from_tty, | |
9581 | 1 /* enabled */, | |
9582 | 0 /* internal */, | |
9583 | 0); | |
9584 | } | |
9585 | ||
d3ce09f5 | 9586 | static void |
0b39b52e | 9587 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9588 | { |
9589 | error (_("May only run agent-printf on the target")); | |
9590 | } | |
9591 | ||
f1310107 TJB |
9592 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9593 | ranged breakpoints. */ | |
9594 | ||
9595 | static int | |
9596 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9597 | const address_space *aspace, |
09ac7c10 TT |
9598 | CORE_ADDR bp_addr, |
9599 | const struct target_waitstatus *ws) | |
f1310107 | 9600 | { |
09ac7c10 | 9601 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9602 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9603 | return 0; |
9604 | ||
f1310107 TJB |
9605 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9606 | bl->length, aspace, bp_addr); | |
9607 | } | |
9608 | ||
9609 | /* Implement the "resources_needed" breakpoint_ops method for | |
9610 | ranged breakpoints. */ | |
9611 | ||
9612 | static int | |
9613 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9614 | { | |
9615 | return target_ranged_break_num_registers (); | |
9616 | } | |
9617 | ||
9618 | /* Implement the "print_it" breakpoint_ops method for | |
9619 | ranged breakpoints. */ | |
9620 | ||
9621 | static enum print_stop_action | |
348d480f | 9622 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9623 | { |
348d480f | 9624 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9625 | struct bp_location *bl = b->loc; |
79a45e25 | 9626 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9627 | |
9628 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9629 | ||
9630 | /* Ranged breakpoints have only one location. */ | |
9631 | gdb_assert (bl && bl->next == NULL); | |
9632 | ||
9633 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9634 | |
9635 | maybe_print_thread_hit_breakpoint (uiout); | |
9636 | ||
f1310107 | 9637 | if (b->disposition == disp_del) |
112e8700 | 9638 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9639 | else |
112e8700 SM |
9640 | uiout->text ("Ranged breakpoint "); |
9641 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9642 | { |
112e8700 | 9643 | uiout->field_string ("reason", |
f1310107 | 9644 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9645 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9646 | } |
112e8700 SM |
9647 | uiout->field_int ("bkptno", b->number); |
9648 | uiout->text (", "); | |
f1310107 TJB |
9649 | |
9650 | return PRINT_SRC_AND_LOC; | |
9651 | } | |
9652 | ||
9653 | /* Implement the "print_one" breakpoint_ops method for | |
9654 | ranged breakpoints. */ | |
9655 | ||
9656 | static void | |
9657 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9658 | struct bp_location **last_loc) | |
9659 | { | |
9660 | struct bp_location *bl = b->loc; | |
9661 | struct value_print_options opts; | |
79a45e25 | 9662 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9663 | |
9664 | /* Ranged breakpoints have only one location. */ | |
9665 | gdb_assert (bl && bl->next == NULL); | |
9666 | ||
9667 | get_user_print_options (&opts); | |
9668 | ||
9669 | if (opts.addressprint) | |
9670 | /* We don't print the address range here, it will be printed later | |
9671 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9672 | uiout->field_skip ("addr"); |
f1310107 TJB |
9673 | annotate_field (5); |
9674 | print_breakpoint_location (b, bl); | |
9675 | *last_loc = bl; | |
9676 | } | |
9677 | ||
9678 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9679 | ranged breakpoints. */ | |
9680 | ||
9681 | static void | |
9682 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9683 | struct ui_out *uiout) | |
9684 | { | |
9685 | CORE_ADDR address_start, address_end; | |
9686 | struct bp_location *bl = b->loc; | |
d7e74731 | 9687 | string_file stb; |
f1310107 TJB |
9688 | |
9689 | gdb_assert (bl); | |
9690 | ||
9691 | address_start = bl->address; | |
9692 | address_end = address_start + bl->length - 1; | |
9693 | ||
112e8700 | 9694 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9695 | stb.printf ("[%s, %s]", |
9696 | print_core_address (bl->gdbarch, address_start), | |
9697 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9698 | uiout->field_stream ("addr", stb); |
9699 | uiout->text ("\n"); | |
f1310107 TJB |
9700 | } |
9701 | ||
9702 | /* Implement the "print_mention" breakpoint_ops method for | |
9703 | ranged breakpoints. */ | |
9704 | ||
9705 | static void | |
9706 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9707 | { | |
9708 | struct bp_location *bl = b->loc; | |
79a45e25 | 9709 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9710 | |
9711 | gdb_assert (bl); | |
9712 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9713 | ||
2d33446d TT |
9714 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9715 | b->number, paddress (bl->gdbarch, bl->address), | |
9716 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9717 | } |
9718 | ||
9719 | /* Implement the "print_recreate" breakpoint_ops method for | |
9720 | ranged breakpoints. */ | |
9721 | ||
9722 | static void | |
9723 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9724 | { | |
f00aae0f | 9725 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9726 | event_location_to_string (b->location.get ()), |
9727 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9728 | print_recreate_thread (b, fp); |
f1310107 TJB |
9729 | } |
9730 | ||
9731 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9732 | ||
2060206e | 9733 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9734 | |
9735 | /* Find the address where the end of the breakpoint range should be | |
9736 | placed, given the SAL of the end of the range. This is so that if | |
9737 | the user provides a line number, the end of the range is set to the | |
9738 | last instruction of the given line. */ | |
9739 | ||
9740 | static CORE_ADDR | |
9741 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9742 | { | |
9743 | CORE_ADDR end; | |
9744 | ||
9745 | /* If the user provided a PC value, use it. Otherwise, | |
9746 | find the address of the end of the given location. */ | |
9747 | if (sal.explicit_pc) | |
9748 | end = sal.pc; | |
9749 | else | |
9750 | { | |
9751 | int ret; | |
9752 | CORE_ADDR start; | |
9753 | ||
9754 | ret = find_line_pc_range (sal, &start, &end); | |
9755 | if (!ret) | |
9756 | error (_("Could not find location of the end of the range.")); | |
9757 | ||
9758 | /* find_line_pc_range returns the start of the next line. */ | |
9759 | end--; | |
9760 | } | |
9761 | ||
9762 | return end; | |
9763 | } | |
9764 | ||
9765 | /* Implement the "break-range" CLI command. */ | |
9766 | ||
9767 | static void | |
0b39b52e | 9768 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9769 | { |
f2fc3015 | 9770 | const char *arg_start; |
f1310107 TJB |
9771 | struct linespec_result canonical_start, canonical_end; |
9772 | int bp_count, can_use_bp, length; | |
9773 | CORE_ADDR end; | |
9774 | struct breakpoint *b; | |
f1310107 TJB |
9775 | |
9776 | /* We don't support software ranged breakpoints. */ | |
9777 | if (target_ranged_break_num_registers () < 0) | |
9778 | error (_("This target does not support hardware ranged breakpoints.")); | |
9779 | ||
9780 | bp_count = hw_breakpoint_used_count (); | |
9781 | bp_count += target_ranged_break_num_registers (); | |
9782 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9783 | bp_count, 0); | |
9784 | if (can_use_bp < 0) | |
9785 | error (_("Hardware breakpoints used exceeds limit.")); | |
9786 | ||
f8eba3c6 | 9787 | arg = skip_spaces (arg); |
f1310107 TJB |
9788 | if (arg == NULL || arg[0] == '\0') |
9789 | error(_("No address range specified.")); | |
9790 | ||
f8eba3c6 | 9791 | arg_start = arg; |
ffc2605c TT |
9792 | event_location_up start_location = string_to_event_location (&arg, |
9793 | current_language); | |
9794 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9795 | |
9796 | if (arg[0] != ',') | |
9797 | error (_("Too few arguments.")); | |
6c5b2ebe | 9798 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9799 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9800 | |
6c5b2ebe | 9801 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9802 | |
6c5b2ebe PA |
9803 | if (canonical_start.lsals.size () > 1 |
9804 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9805 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9806 | ||
6c5b2ebe | 9807 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9808 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9809 | |
9810 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9811 | arg = skip_spaces (arg); |
f1310107 TJB |
9812 | |
9813 | /* Parse the end location. */ | |
9814 | ||
f1310107 TJB |
9815 | arg_start = arg; |
9816 | ||
f8eba3c6 | 9817 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9818 | parse_breakpoint_sals because we need to specify the start location's |
9819 | symtab and line as the default symtab and line for the end of the | |
9820 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9821 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9822 | event_location_up end_location = string_to_event_location (&arg, |
9823 | current_language); | |
9824 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9825 | sal_start.symtab, sal_start.line, |
9826 | &canonical_end, NULL, NULL); | |
9827 | ||
6c5b2ebe | 9828 | if (canonical_end.lsals.empty ()) |
f1310107 | 9829 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9830 | |
6c5b2ebe PA |
9831 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9832 | if (canonical_end.lsals.size () > 1 | |
9833 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9834 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9835 | ||
6c5b2ebe | 9836 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9837 | |
9838 | end = find_breakpoint_range_end (sal_end); | |
9839 | if (sal_start.pc > end) | |
177b42fe | 9840 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9841 | |
9842 | length = end - sal_start.pc + 1; | |
9843 | if (length < 0) | |
9844 | /* Length overflowed. */ | |
9845 | error (_("Address range too large.")); | |
9846 | else if (length == 1) | |
9847 | { | |
9848 | /* This range is simple enough to be handled by | |
9849 | the `hbreak' command. */ | |
81b1e71c | 9850 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9851 | |
9852 | return; | |
9853 | } | |
9854 | ||
9855 | /* Now set up the breakpoint. */ | |
9856 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9857 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9858 | set_breakpoint_count (breakpoint_count + 1); |
9859 | b->number = breakpoint_count; | |
9860 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9861 | b->location = std::move (start_location); |
9862 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9863 | b->loc->length = length; |
9864 | ||
f1310107 | 9865 | mention (b); |
76727919 | 9866 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9867 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9868 | } |
9869 | ||
4a64f543 MS |
9870 | /* Return non-zero if EXP is verified as constant. Returned zero |
9871 | means EXP is variable. Also the constant detection may fail for | |
9872 | some constant expressions and in such case still falsely return | |
9873 | zero. */ | |
2e6e3d9c | 9874 | |
65d79d4b SDJ |
9875 | static int |
9876 | watchpoint_exp_is_const (const struct expression *exp) | |
9877 | { | |
9878 | int i = exp->nelts; | |
9879 | ||
9880 | while (i > 0) | |
9881 | { | |
9882 | int oplenp, argsp; | |
9883 | ||
9884 | /* We are only interested in the descriptor of each element. */ | |
9885 | operator_length (exp, i, &oplenp, &argsp); | |
9886 | i -= oplenp; | |
9887 | ||
9888 | switch (exp->elts[i].opcode) | |
9889 | { | |
9890 | case BINOP_ADD: | |
9891 | case BINOP_SUB: | |
9892 | case BINOP_MUL: | |
9893 | case BINOP_DIV: | |
9894 | case BINOP_REM: | |
9895 | case BINOP_MOD: | |
9896 | case BINOP_LSH: | |
9897 | case BINOP_RSH: | |
9898 | case BINOP_LOGICAL_AND: | |
9899 | case BINOP_LOGICAL_OR: | |
9900 | case BINOP_BITWISE_AND: | |
9901 | case BINOP_BITWISE_IOR: | |
9902 | case BINOP_BITWISE_XOR: | |
9903 | case BINOP_EQUAL: | |
9904 | case BINOP_NOTEQUAL: | |
9905 | case BINOP_LESS: | |
9906 | case BINOP_GTR: | |
9907 | case BINOP_LEQ: | |
9908 | case BINOP_GEQ: | |
9909 | case BINOP_REPEAT: | |
9910 | case BINOP_COMMA: | |
9911 | case BINOP_EXP: | |
9912 | case BINOP_MIN: | |
9913 | case BINOP_MAX: | |
9914 | case BINOP_INTDIV: | |
9915 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9916 | case TERNOP_COND: |
9917 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9918 | |
9919 | case OP_LONG: | |
edd079d9 | 9920 | case OP_FLOAT: |
65d79d4b SDJ |
9921 | case OP_LAST: |
9922 | case OP_COMPLEX: | |
9923 | case OP_STRING: | |
65d79d4b SDJ |
9924 | case OP_ARRAY: |
9925 | case OP_TYPE: | |
608b4967 TT |
9926 | case OP_TYPEOF: |
9927 | case OP_DECLTYPE: | |
6e72ca20 | 9928 | case OP_TYPEID: |
65d79d4b SDJ |
9929 | case OP_NAME: |
9930 | case OP_OBJC_NSSTRING: | |
9931 | ||
9932 | case UNOP_NEG: | |
9933 | case UNOP_LOGICAL_NOT: | |
9934 | case UNOP_COMPLEMENT: | |
9935 | case UNOP_ADDR: | |
9936 | case UNOP_HIGH: | |
aeaa2474 | 9937 | case UNOP_CAST: |
9eaf6705 TT |
9938 | |
9939 | case UNOP_CAST_TYPE: | |
9940 | case UNOP_REINTERPRET_CAST: | |
9941 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9942 | /* Unary, binary and ternary operators: We have to check |
9943 | their operands. If they are constant, then so is the | |
9944 | result of that operation. For instance, if A and B are | |
9945 | determined to be constants, then so is "A + B". | |
9946 | ||
9947 | UNOP_IND is one exception to the rule above, because the | |
9948 | value of *ADDR is not necessarily a constant, even when | |
9949 | ADDR is. */ | |
65d79d4b SDJ |
9950 | break; |
9951 | ||
9952 | case OP_VAR_VALUE: | |
9953 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9954 | |
65d79d4b | 9955 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9956 | possible that a buggy compiler could mark a variable as |
9957 | constant even when it is not, and TYPE_CONST would return | |
9958 | true in this case, while SYMBOL_CLASS wouldn't. | |
9959 | ||
9960 | We also have to check for function symbols because they | |
9961 | are always constant. */ | |
65d79d4b SDJ |
9962 | { |
9963 | struct symbol *s = exp->elts[i + 2].symbol; | |
9964 | ||
9965 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9966 | && SYMBOL_CLASS (s) != LOC_CONST | |
9967 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9968 | return 0; | |
9969 | break; | |
9970 | } | |
9971 | ||
9972 | /* The default action is to return 0 because we are using | |
9973 | the optimistic approach here: If we don't know something, | |
9974 | then it is not a constant. */ | |
9975 | default: | |
9976 | return 0; | |
9977 | } | |
9978 | } | |
9979 | ||
9980 | return 1; | |
9981 | } | |
9982 | ||
c1fc2657 | 9983 | /* Watchpoint destructor. */ |
3a5c3e22 | 9984 | |
c1fc2657 | 9985 | watchpoint::~watchpoint () |
3a5c3e22 | 9986 | { |
c1fc2657 SM |
9987 | xfree (this->exp_string); |
9988 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
9989 | } |
9990 | ||
348d480f PA |
9991 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
9992 | ||
9993 | static void | |
9994 | re_set_watchpoint (struct breakpoint *b) | |
9995 | { | |
3a5c3e22 PA |
9996 | struct watchpoint *w = (struct watchpoint *) b; |
9997 | ||
348d480f PA |
9998 | /* Watchpoint can be either on expression using entirely global |
9999 | variables, or it can be on local variables. | |
10000 | ||
10001 | Watchpoints of the first kind are never auto-deleted, and even | |
10002 | persist across program restarts. Since they can use variables | |
10003 | from shared libraries, we need to reparse expression as libraries | |
10004 | are loaded and unloaded. | |
10005 | ||
10006 | Watchpoints on local variables can also change meaning as result | |
10007 | of solib event. For example, if a watchpoint uses both a local | |
10008 | and a global variables in expression, it's a local watchpoint, | |
10009 | but unloading of a shared library will make the expression | |
10010 | invalid. This is not a very common use case, but we still | |
10011 | re-evaluate expression, to avoid surprises to the user. | |
10012 | ||
10013 | Note that for local watchpoints, we re-evaluate it only if | |
10014 | watchpoints frame id is still valid. If it's not, it means the | |
10015 | watchpoint is out of scope and will be deleted soon. In fact, | |
10016 | I'm not sure we'll ever be called in this case. | |
10017 | ||
10018 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10019 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10020 | |
3a5c3e22 PA |
10021 | Don't do anything about disabled watchpoints, since they will be |
10022 | reevaluated again when enabled. */ | |
10023 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10024 | } |
10025 | ||
77b06cd7 TJB |
10026 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10027 | ||
10028 | static int | |
10029 | insert_watchpoint (struct bp_location *bl) | |
10030 | { | |
3a5c3e22 PA |
10031 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10032 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10033 | |
10034 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10035 | w->cond_exp.get ()); |
77b06cd7 TJB |
10036 | } |
10037 | ||
10038 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10039 | ||
10040 | static int | |
73971819 | 10041 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10042 | { |
3a5c3e22 PA |
10043 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10044 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10045 | |
10046 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10047 | w->cond_exp.get ()); |
e09342b5 TJB |
10048 | } |
10049 | ||
e09342b5 | 10050 | static int |
348d480f | 10051 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10052 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10053 | const struct target_waitstatus *ws) |
e09342b5 | 10054 | { |
348d480f | 10055 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10056 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10057 | |
348d480f PA |
10058 | /* Continuable hardware watchpoints are treated as non-existent if the |
10059 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10060 | some data address). Otherwise gdb won't stop on a break instruction | |
10061 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10062 | been defined. Also skip watchpoints which we know did not trigger | |
10063 | (did not match the data address). */ | |
10064 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10065 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10066 | return 0; |
9c06b0b4 | 10067 | |
348d480f | 10068 | return 1; |
9c06b0b4 TJB |
10069 | } |
10070 | ||
348d480f PA |
10071 | static void |
10072 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10073 | { |
348d480f | 10074 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10075 | |
348d480f | 10076 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10077 | } |
10078 | ||
10079 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10080 | hardware watchpoints. */ |
9c06b0b4 TJB |
10081 | |
10082 | static int | |
348d480f | 10083 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10084 | { |
3a5c3e22 PA |
10085 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10086 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10087 | |
10088 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10089 | } |
10090 | ||
10091 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10092 | hardware watchpoints. */ |
9c06b0b4 TJB |
10093 | |
10094 | static int | |
348d480f | 10095 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10096 | { |
efa80663 PA |
10097 | /* Read and access watchpoints only work with hardware support. */ |
10098 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10099 | } |
10100 | ||
9c06b0b4 | 10101 | static enum print_stop_action |
348d480f | 10102 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10103 | { |
348d480f | 10104 | struct breakpoint *b; |
348d480f | 10105 | enum print_stop_action result; |
3a5c3e22 | 10106 | struct watchpoint *w; |
79a45e25 | 10107 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10108 | |
10109 | gdb_assert (bs->bp_location_at != NULL); | |
10110 | ||
348d480f | 10111 | b = bs->breakpoint_at; |
3a5c3e22 | 10112 | w = (struct watchpoint *) b; |
348d480f | 10113 | |
f303dbd6 PA |
10114 | annotate_watchpoint (b->number); |
10115 | maybe_print_thread_hit_breakpoint (uiout); | |
10116 | ||
d7e74731 PA |
10117 | string_file stb; |
10118 | ||
76f9c9cf | 10119 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10120 | switch (b->type) |
10121 | { | |
348d480f | 10122 | case bp_watchpoint: |
9c06b0b4 | 10123 | case bp_hardware_watchpoint: |
112e8700 SM |
10124 | if (uiout->is_mi_like_p ()) |
10125 | uiout->field_string | |
10126 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10127 | mention (b); |
76f9c9cf | 10128 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10129 | uiout->text ("\nOld value = "); |
850645cf | 10130 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10131 | uiout->field_stream ("old", stb); |
10132 | uiout->text ("\nNew value = "); | |
850645cf | 10133 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10134 | uiout->field_stream ("new", stb); |
10135 | uiout->text ("\n"); | |
348d480f PA |
10136 | /* More than one watchpoint may have been triggered. */ |
10137 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10138 | break; |
10139 | ||
10140 | case bp_read_watchpoint: | |
112e8700 SM |
10141 | if (uiout->is_mi_like_p ()) |
10142 | uiout->field_string | |
10143 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10144 | mention (b); |
76f9c9cf | 10145 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10146 | uiout->text ("\nValue = "); |
850645cf | 10147 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10148 | uiout->field_stream ("value", stb); |
10149 | uiout->text ("\n"); | |
348d480f | 10150 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10151 | break; |
10152 | ||
10153 | case bp_access_watchpoint: | |
348d480f PA |
10154 | if (bs->old_val != NULL) |
10155 | { | |
112e8700 SM |
10156 | if (uiout->is_mi_like_p ()) |
10157 | uiout->field_string | |
10158 | ("reason", | |
348d480f PA |
10159 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10160 | mention (b); | |
76f9c9cf | 10161 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10162 | uiout->text ("\nOld value = "); |
850645cf | 10163 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10164 | uiout->field_stream ("old", stb); |
10165 | uiout->text ("\nNew value = "); | |
348d480f PA |
10166 | } |
10167 | else | |
10168 | { | |
10169 | mention (b); | |
112e8700 SM |
10170 | if (uiout->is_mi_like_p ()) |
10171 | uiout->field_string | |
10172 | ("reason", | |
348d480f | 10173 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10174 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10175 | uiout->text ("\nValue = "); |
348d480f | 10176 | } |
850645cf | 10177 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10178 | uiout->field_stream ("new", stb); |
10179 | uiout->text ("\n"); | |
348d480f | 10180 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10181 | break; |
10182 | default: | |
348d480f | 10183 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10184 | } |
10185 | ||
348d480f PA |
10186 | return result; |
10187 | } | |
10188 | ||
10189 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10190 | watchpoints. */ | |
10191 | ||
10192 | static void | |
10193 | print_mention_watchpoint (struct breakpoint *b) | |
10194 | { | |
3a5c3e22 | 10195 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10196 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10197 | const char *tuple_name; |
348d480f PA |
10198 | |
10199 | switch (b->type) | |
10200 | { | |
10201 | case bp_watchpoint: | |
112e8700 | 10202 | uiout->text ("Watchpoint "); |
46b9c129 | 10203 | tuple_name = "wpt"; |
348d480f PA |
10204 | break; |
10205 | case bp_hardware_watchpoint: | |
112e8700 | 10206 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10207 | tuple_name = "wpt"; |
348d480f PA |
10208 | break; |
10209 | case bp_read_watchpoint: | |
112e8700 | 10210 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10211 | tuple_name = "hw-rwpt"; |
348d480f PA |
10212 | break; |
10213 | case bp_access_watchpoint: | |
112e8700 | 10214 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10215 | tuple_name = "hw-awpt"; |
348d480f PA |
10216 | break; |
10217 | default: | |
10218 | internal_error (__FILE__, __LINE__, | |
10219 | _("Invalid hardware watchpoint type.")); | |
10220 | } | |
10221 | ||
46b9c129 | 10222 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10223 | uiout->field_int ("number", b->number); |
10224 | uiout->text (": "); | |
10225 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10226 | } |
10227 | ||
10228 | /* Implement the "print_recreate" breakpoint_ops method for | |
10229 | watchpoints. */ | |
10230 | ||
10231 | static void | |
10232 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10233 | { | |
3a5c3e22 PA |
10234 | struct watchpoint *w = (struct watchpoint *) b; |
10235 | ||
348d480f PA |
10236 | switch (b->type) |
10237 | { | |
10238 | case bp_watchpoint: | |
10239 | case bp_hardware_watchpoint: | |
10240 | fprintf_unfiltered (fp, "watch"); | |
10241 | break; | |
10242 | case bp_read_watchpoint: | |
10243 | fprintf_unfiltered (fp, "rwatch"); | |
10244 | break; | |
10245 | case bp_access_watchpoint: | |
10246 | fprintf_unfiltered (fp, "awatch"); | |
10247 | break; | |
10248 | default: | |
10249 | internal_error (__FILE__, __LINE__, | |
10250 | _("Invalid watchpoint type.")); | |
10251 | } | |
10252 | ||
3a5c3e22 | 10253 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10254 | print_recreate_thread (b, fp); |
348d480f PA |
10255 | } |
10256 | ||
427cd150 TT |
10257 | /* Implement the "explains_signal" breakpoint_ops method for |
10258 | watchpoints. */ | |
10259 | ||
47591c29 | 10260 | static int |
427cd150 TT |
10261 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10262 | { | |
10263 | /* A software watchpoint cannot cause a signal other than | |
10264 | GDB_SIGNAL_TRAP. */ | |
10265 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10266 | return 0; |
427cd150 | 10267 | |
47591c29 | 10268 | return 1; |
427cd150 TT |
10269 | } |
10270 | ||
348d480f PA |
10271 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10272 | ||
2060206e | 10273 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10274 | |
10275 | /* Implement the "insert" breakpoint_ops method for | |
10276 | masked hardware watchpoints. */ | |
10277 | ||
10278 | static int | |
10279 | insert_masked_watchpoint (struct bp_location *bl) | |
10280 | { | |
3a5c3e22 PA |
10281 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10282 | ||
10283 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10284 | bl->watchpoint_type); |
10285 | } | |
10286 | ||
10287 | /* Implement the "remove" breakpoint_ops method for | |
10288 | masked hardware watchpoints. */ | |
10289 | ||
10290 | static int | |
73971819 | 10291 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10292 | { |
3a5c3e22 PA |
10293 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10294 | ||
10295 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10296 | bl->watchpoint_type); |
10297 | } | |
10298 | ||
10299 | /* Implement the "resources_needed" breakpoint_ops method for | |
10300 | masked hardware watchpoints. */ | |
10301 | ||
10302 | static int | |
10303 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10304 | { | |
3a5c3e22 PA |
10305 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10306 | ||
10307 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10308 | } |
10309 | ||
10310 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10311 | masked hardware watchpoints. */ | |
10312 | ||
10313 | static int | |
10314 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10315 | { | |
10316 | return 0; | |
10317 | } | |
10318 | ||
10319 | /* Implement the "print_it" breakpoint_ops method for | |
10320 | masked hardware watchpoints. */ | |
10321 | ||
10322 | static enum print_stop_action | |
10323 | print_it_masked_watchpoint (bpstat bs) | |
10324 | { | |
10325 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10326 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10327 | |
10328 | /* Masked watchpoints have only one location. */ | |
10329 | gdb_assert (b->loc && b->loc->next == NULL); | |
10330 | ||
f303dbd6 PA |
10331 | annotate_watchpoint (b->number); |
10332 | maybe_print_thread_hit_breakpoint (uiout); | |
10333 | ||
348d480f PA |
10334 | switch (b->type) |
10335 | { | |
10336 | case bp_hardware_watchpoint: | |
112e8700 SM |
10337 | if (uiout->is_mi_like_p ()) |
10338 | uiout->field_string | |
10339 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10340 | break; |
10341 | ||
10342 | case bp_read_watchpoint: | |
112e8700 SM |
10343 | if (uiout->is_mi_like_p ()) |
10344 | uiout->field_string | |
10345 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10346 | break; |
10347 | ||
10348 | case bp_access_watchpoint: | |
112e8700 SM |
10349 | if (uiout->is_mi_like_p ()) |
10350 | uiout->field_string | |
10351 | ("reason", | |
348d480f PA |
10352 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10353 | break; | |
10354 | default: | |
10355 | internal_error (__FILE__, __LINE__, | |
10356 | _("Invalid hardware watchpoint type.")); | |
10357 | } | |
10358 | ||
10359 | mention (b); | |
112e8700 | 10360 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10361 | Check the underlying instruction at PC for the memory\n\ |
10362 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10363 | uiout->text ("\n"); |
9c06b0b4 TJB |
10364 | |
10365 | /* More than one watchpoint may have been triggered. */ | |
10366 | return PRINT_UNKNOWN; | |
10367 | } | |
10368 | ||
10369 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10370 | masked hardware watchpoints. */ | |
10371 | ||
10372 | static void | |
10373 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10374 | struct ui_out *uiout) | |
10375 | { | |
3a5c3e22 PA |
10376 | struct watchpoint *w = (struct watchpoint *) b; |
10377 | ||
9c06b0b4 TJB |
10378 | /* Masked watchpoints have only one location. */ |
10379 | gdb_assert (b->loc && b->loc->next == NULL); | |
10380 | ||
112e8700 SM |
10381 | uiout->text ("\tmask "); |
10382 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10383 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10384 | } |
10385 | ||
10386 | /* Implement the "print_mention" breakpoint_ops method for | |
10387 | masked hardware watchpoints. */ | |
10388 | ||
10389 | static void | |
10390 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10391 | { | |
3a5c3e22 | 10392 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10393 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10394 | const char *tuple_name; |
9c06b0b4 TJB |
10395 | |
10396 | switch (b->type) | |
10397 | { | |
10398 | case bp_hardware_watchpoint: | |
112e8700 | 10399 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10400 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10401 | break; |
10402 | case bp_read_watchpoint: | |
112e8700 | 10403 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10404 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10405 | break; |
10406 | case bp_access_watchpoint: | |
112e8700 | 10407 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10408 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10409 | break; |
10410 | default: | |
10411 | internal_error (__FILE__, __LINE__, | |
10412 | _("Invalid hardware watchpoint type.")); | |
10413 | } | |
10414 | ||
46b9c129 | 10415 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10416 | uiout->field_int ("number", b->number); |
10417 | uiout->text (": "); | |
10418 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10419 | } |
10420 | ||
10421 | /* Implement the "print_recreate" breakpoint_ops method for | |
10422 | masked hardware watchpoints. */ | |
10423 | ||
10424 | static void | |
10425 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10426 | { | |
3a5c3e22 | 10427 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10428 | char tmp[40]; |
10429 | ||
10430 | switch (b->type) | |
10431 | { | |
10432 | case bp_hardware_watchpoint: | |
10433 | fprintf_unfiltered (fp, "watch"); | |
10434 | break; | |
10435 | case bp_read_watchpoint: | |
10436 | fprintf_unfiltered (fp, "rwatch"); | |
10437 | break; | |
10438 | case bp_access_watchpoint: | |
10439 | fprintf_unfiltered (fp, "awatch"); | |
10440 | break; | |
10441 | default: | |
10442 | internal_error (__FILE__, __LINE__, | |
10443 | _("Invalid hardware watchpoint type.")); | |
10444 | } | |
10445 | ||
3a5c3e22 PA |
10446 | sprintf_vma (tmp, w->hw_wp_mask); |
10447 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10448 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10449 | } |
10450 | ||
10451 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10452 | ||
2060206e | 10453 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10454 | |
10455 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10456 | ||
10457 | static int | |
10458 | is_masked_watchpoint (const struct breakpoint *b) | |
10459 | { | |
10460 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10461 | } | |
10462 | ||
53a5351d JM |
10463 | /* accessflag: hw_write: watch write, |
10464 | hw_read: watch read, | |
10465 | hw_access: watch access (read or write) */ | |
c906108c | 10466 | static void |
bbc13ae3 | 10467 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10468 | int just_location, int internal) |
c906108c | 10469 | { |
c1fc2657 | 10470 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10471 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10472 | struct value *result; |
bb9d5f81 | 10473 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10474 | const char *exp_start = NULL; |
10475 | const char *exp_end = NULL; | |
10476 | const char *tok, *end_tok; | |
9c06b0b4 | 10477 | int toklen = -1; |
bbc13ae3 KS |
10478 | const char *cond_start = NULL; |
10479 | const char *cond_end = NULL; | |
c906108c | 10480 | enum bptype bp_type; |
37e4754d | 10481 | int thread = -1; |
0cf6dd15 | 10482 | int pc = 0; |
9c06b0b4 TJB |
10483 | /* Flag to indicate whether we are going to use masks for |
10484 | the hardware watchpoint. */ | |
10485 | int use_mask = 0; | |
10486 | CORE_ADDR mask = 0; | |
c906108c | 10487 | |
37e4754d LM |
10488 | /* Make sure that we actually have parameters to parse. */ |
10489 | if (arg != NULL && arg[0] != '\0') | |
10490 | { | |
bbc13ae3 KS |
10491 | const char *value_start; |
10492 | ||
10493 | exp_end = arg + strlen (arg); | |
37e4754d | 10494 | |
9c06b0b4 TJB |
10495 | /* Look for "parameter value" pairs at the end |
10496 | of the arguments string. */ | |
bbc13ae3 | 10497 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10498 | { |
10499 | /* Skip whitespace at the end of the argument list. */ | |
10500 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10501 | tok--; | |
10502 | ||
10503 | /* Find the beginning of the last token. | |
10504 | This is the value of the parameter. */ | |
10505 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10506 | tok--; | |
10507 | value_start = tok + 1; | |
10508 | ||
10509 | /* Skip whitespace. */ | |
10510 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10511 | tok--; | |
10512 | ||
10513 | end_tok = tok; | |
10514 | ||
10515 | /* Find the beginning of the second to last token. | |
10516 | This is the parameter itself. */ | |
10517 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10518 | tok--; | |
10519 | tok++; | |
10520 | toklen = end_tok - tok + 1; | |
10521 | ||
61012eef | 10522 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10523 | { |
5d5658a1 | 10524 | struct thread_info *thr; |
9c06b0b4 TJB |
10525 | /* At this point we've found a "thread" token, which means |
10526 | the user is trying to set a watchpoint that triggers | |
10527 | only in a specific thread. */ | |
5d5658a1 | 10528 | const char *endp; |
37e4754d | 10529 | |
9c06b0b4 TJB |
10530 | if (thread != -1) |
10531 | error(_("You can specify only one thread.")); | |
37e4754d | 10532 | |
9c06b0b4 | 10533 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10534 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10535 | |
5d5658a1 | 10536 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10537 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10538 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10539 | |
5d5658a1 | 10540 | thread = thr->global_num; |
9c06b0b4 | 10541 | } |
61012eef | 10542 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10543 | { |
10544 | /* We've found a "mask" token, which means the user wants to | |
10545 | create a hardware watchpoint that is going to have the mask | |
10546 | facility. */ | |
10547 | struct value *mask_value, *mark; | |
37e4754d | 10548 | |
9c06b0b4 TJB |
10549 | if (use_mask) |
10550 | error(_("You can specify only one mask.")); | |
37e4754d | 10551 | |
9c06b0b4 | 10552 | use_mask = just_location = 1; |
37e4754d | 10553 | |
9c06b0b4 TJB |
10554 | mark = value_mark (); |
10555 | mask_value = parse_to_comma_and_eval (&value_start); | |
10556 | mask = value_as_address (mask_value); | |
10557 | value_free_to_mark (mark); | |
10558 | } | |
10559 | else | |
10560 | /* We didn't recognize what we found. We should stop here. */ | |
10561 | break; | |
37e4754d | 10562 | |
9c06b0b4 TJB |
10563 | /* Truncate the string and get rid of the "parameter value" pair before |
10564 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10565 | exp_end = tok; |
9c06b0b4 | 10566 | } |
37e4754d | 10567 | } |
bbc13ae3 KS |
10568 | else |
10569 | exp_end = arg; | |
37e4754d | 10570 | |
bbc13ae3 KS |
10571 | /* Parse the rest of the arguments. From here on out, everything |
10572 | is in terms of a newly allocated string instead of the original | |
10573 | ARG. */ | |
81b1e71c TT |
10574 | std::string expression (arg, exp_end - arg); |
10575 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10576 | innermost_block_tracker tracker; |
10577 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10578 | exp_end = arg; |
fa8a61dc TT |
10579 | /* Remove trailing whitespace from the expression before saving it. |
10580 | This makes the eventual display of the expression string a bit | |
10581 | prettier. */ | |
10582 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10583 | --exp_end; | |
10584 | ||
65d79d4b | 10585 | /* Checking if the expression is not constant. */ |
4d01a485 | 10586 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10587 | { |
10588 | int len; | |
10589 | ||
10590 | len = exp_end - exp_start; | |
10591 | while (len > 0 && isspace (exp_start[len - 1])) | |
10592 | len--; | |
10593 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10594 | } | |
10595 | ||
699bd4cf | 10596 | exp_valid_block = tracker.block (); |
b926417a | 10597 | struct value *mark = value_mark (); |
850645cf TT |
10598 | struct value *val_as_value = nullptr; |
10599 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10600 | just_location); | |
06a64a0b | 10601 | |
850645cf | 10602 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10603 | { |
850645cf TT |
10604 | saved_bitpos = value_bitpos (val_as_value); |
10605 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10606 | } |
10607 | ||
850645cf | 10608 | value_ref_ptr val; |
06a64a0b TT |
10609 | if (just_location) |
10610 | { | |
9c06b0b4 TJB |
10611 | int ret; |
10612 | ||
06a64a0b | 10613 | exp_valid_block = NULL; |
850645cf | 10614 | val = release_value (value_addr (result)); |
06a64a0b | 10615 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10616 | |
10617 | if (use_mask) | |
10618 | { | |
850645cf | 10619 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10620 | mask); |
10621 | if (ret == -1) | |
10622 | error (_("This target does not support masked watchpoints.")); | |
10623 | else if (ret == -2) | |
10624 | error (_("Invalid mask or memory region.")); | |
10625 | } | |
06a64a0b | 10626 | } |
850645cf TT |
10627 | else if (val_as_value != NULL) |
10628 | val = release_value (val_as_value); | |
c906108c | 10629 | |
f1735a53 TT |
10630 | tok = skip_spaces (arg); |
10631 | end_tok = skip_to_space (tok); | |
c906108c SS |
10632 | |
10633 | toklen = end_tok - tok; | |
10634 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10635 | { | |
10636 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10637 | innermost_block_tracker if_tracker; |
10638 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10639 | |
10640 | /* The watchpoint expression may not be local, but the condition | |
10641 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10642 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10643 | |
c906108c SS |
10644 | cond_end = tok; |
10645 | } | |
10646 | if (*tok) | |
8a3fe4f8 | 10647 | error (_("Junk at end of command.")); |
c906108c | 10648 | |
441d7c93 PA |
10649 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10650 | ||
10651 | /* Save this because create_internal_breakpoint below invalidates | |
10652 | 'wp_frame'. */ | |
10653 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10654 | |
10655 | /* If the expression is "local", then set up a "watchpoint scope" | |
10656 | breakpoint at the point where we've left the scope of the watchpoint | |
10657 | expression. Create the scope breakpoint before the watchpoint, so | |
10658 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10659 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10660 | { |
441d7c93 PA |
10661 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10662 | ||
10663 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10664 | { |
441d7c93 PA |
10665 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10666 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10667 | ||
edb3359d | 10668 | scope_breakpoint |
441d7c93 | 10669 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10670 | bp_watchpoint_scope, |
10671 | &momentary_breakpoint_ops); | |
d983da9c | 10672 | |
441d7c93 PA |
10673 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10674 | wp_frame = NULL; | |
10675 | ||
edb3359d | 10676 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10677 | |
edb3359d DJ |
10678 | /* Automatically delete the breakpoint when it hits. */ |
10679 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10680 | |
edb3359d | 10681 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10682 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10683 | |
edb3359d | 10684 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10685 | scope_breakpoint->loc->gdbarch = caller_arch; |
10686 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10687 | scope_breakpoint->loc->address |
a6d9a66e UW |
10688 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10689 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10690 | scope_breakpoint->type); |
10691 | } | |
d983da9c DJ |
10692 | } |
10693 | ||
e8369a73 AB |
10694 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10695 | watchpoints here even if hardware watchpoints are turned off, a call | |
10696 | to update_watchpoint later in this function will cause the type to | |
10697 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10698 | ||
10699 | if (accessflag == hw_read) | |
10700 | bp_type = bp_read_watchpoint; | |
10701 | else if (accessflag == hw_access) | |
10702 | bp_type = bp_access_watchpoint; | |
10703 | else | |
10704 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10705 | |
b270e6f9 | 10706 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10707 | |
348d480f | 10708 | if (use_mask) |
b270e6f9 | 10709 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10710 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10711 | else |
b270e6f9 | 10712 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10713 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10714 | w->thread = thread; |
10715 | w->disposition = disp_donttouch; | |
10716 | w->pspace = current_program_space; | |
b22e99fd | 10717 | w->exp = std::move (exp); |
3a5c3e22 PA |
10718 | w->exp_valid_block = exp_valid_block; |
10719 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10720 | if (just_location) |
10721 | { | |
850645cf TT |
10722 | struct type *t = value_type (val.get ()); |
10723 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10724 | |
43cc5389 TT |
10725 | w->exp_string_reparse |
10726 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10727 | |
3a5c3e22 | 10728 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10729 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10730 | } |
10731 | else | |
3a5c3e22 | 10732 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10733 | |
10734 | if (use_mask) | |
10735 | { | |
3a5c3e22 | 10736 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10737 | } |
10738 | else | |
10739 | { | |
3a5c3e22 | 10740 | w->val = val; |
bb9d5f81 PP |
10741 | w->val_bitpos = saved_bitpos; |
10742 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10743 | w->val_valid = 1; |
9c06b0b4 | 10744 | } |
77b06cd7 | 10745 | |
c906108c | 10746 | if (cond_start) |
c1fc2657 | 10747 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10748 | else |
c1fc2657 | 10749 | w->cond_string = 0; |
c5aa993b | 10750 | |
441d7c93 | 10751 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10752 | { |
441d7c93 | 10753 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10754 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10755 | } |
c906108c | 10756 | else |
f6bc2008 | 10757 | { |
3a5c3e22 PA |
10758 | w->watchpoint_frame = null_frame_id; |
10759 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10760 | } |
c906108c | 10761 | |
d983da9c | 10762 | if (scope_breakpoint != NULL) |
c906108c | 10763 | { |
d983da9c DJ |
10764 | /* The scope breakpoint is related to the watchpoint. We will |
10765 | need to act on them together. */ | |
c1fc2657 | 10766 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10767 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10768 | } |
d983da9c | 10769 | |
06a64a0b TT |
10770 | if (!just_location) |
10771 | value_free_to_mark (mark); | |
2d134ed3 | 10772 | |
b270e6f9 TT |
10773 | /* Finally update the new watchpoint. This creates the locations |
10774 | that should be inserted. */ | |
10775 | update_watchpoint (w.get (), 1); | |
a9634178 | 10776 | |
b270e6f9 | 10777 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10778 | } |
10779 | ||
e09342b5 | 10780 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10781 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10782 | |
c906108c | 10783 | static int |
a6535de1 | 10784 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10785 | { |
10786 | int found_memory_cnt = 0; | |
10787 | ||
10788 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10789 | if (!can_use_hw_watchpoints) |
c906108c | 10790 | return 0; |
c5aa993b | 10791 | |
a6535de1 TT |
10792 | gdb_assert (!vals.empty ()); |
10793 | struct value *head = vals[0].get (); | |
10794 | ||
5c44784c JM |
10795 | /* Make sure that the value of the expression depends only upon |
10796 | memory contents, and values computed from them within GDB. If we | |
10797 | find any register references or function calls, we can't use a | |
10798 | hardware watchpoint. | |
10799 | ||
10800 | The idea here is that evaluating an expression generates a series | |
10801 | of values, one holding the value of every subexpression. (The | |
10802 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10803 | a*b+c.) GDB's values hold almost enough information to establish | |
10804 | the criteria given above --- they identify memory lvalues, | |
10805 | register lvalues, computed values, etcetera. So we can evaluate | |
10806 | the expression, and then scan the chain of values that leaves | |
10807 | behind to decide whether we can detect any possible change to the | |
10808 | expression's final value using only hardware watchpoints. | |
10809 | ||
10810 | However, I don't think that the values returned by inferior | |
10811 | function calls are special in any way. So this function may not | |
10812 | notice that an expression involving an inferior function call | |
10813 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10814 | for (const value_ref_ptr &iter : vals) |
c906108c | 10815 | { |
a6535de1 TT |
10816 | struct value *v = iter.get (); |
10817 | ||
5c44784c | 10818 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10819 | { |
8464be76 DJ |
10820 | if (v != head && value_lazy (v)) |
10821 | /* A lazy memory lvalue in the chain is one that GDB never | |
10822 | needed to fetch; we either just used its address (e.g., | |
10823 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10824 | in `a,b'). This doesn't apply to HEAD; if that is | |
10825 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10826 | ; |
53a5351d | 10827 | else |
5c44784c JM |
10828 | { |
10829 | /* Ahh, memory we actually used! Check if we can cover | |
10830 | it with hardware watchpoints. */ | |
df407dfe | 10831 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10832 | |
10833 | /* We only watch structs and arrays if user asked for it | |
10834 | explicitly, never if they just happen to appear in a | |
10835 | middle of some value chain. */ | |
10836 | if (v == head | |
10837 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10838 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10839 | { | |
42ae5230 | 10840 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10841 | int len; |
10842 | int num_regs; | |
10843 | ||
a9634178 | 10844 | len = (target_exact_watchpoints |
e09342b5 TJB |
10845 | && is_scalar_type_recursive (vtype))? |
10846 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10847 | |
e09342b5 TJB |
10848 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10849 | if (!num_regs) | |
2e70b7b9 MS |
10850 | return 0; |
10851 | else | |
e09342b5 | 10852 | found_memory_cnt += num_regs; |
2e70b7b9 | 10853 | } |
5c44784c | 10854 | } |
c5aa993b | 10855 | } |
5086187c AC |
10856 | else if (VALUE_LVAL (v) != not_lval |
10857 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10858 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10859 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10860 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10861 | } |
10862 | ||
10863 | /* The expression itself looks suitable for using a hardware | |
10864 | watchpoint, but give the target machine a chance to reject it. */ | |
10865 | return found_memory_cnt; | |
10866 | } | |
10867 | ||
8b93c638 | 10868 | void |
f2fc3015 | 10869 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10870 | { |
84f4c1fe | 10871 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10872 | } |
10873 | ||
06a64a0b TT |
10874 | /* A helper function that looks for the "-location" argument and then |
10875 | calls watch_command_1. */ | |
10876 | ||
10877 | static void | |
0b39b52e | 10878 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10879 | { |
10880 | int just_location = 0; | |
10881 | ||
10882 | if (arg | |
10883 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10884 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
cbba3ecd | 10885 | just_location = 1; |
06a64a0b | 10886 | |
84f4c1fe | 10887 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10888 | } |
8926118c | 10889 | |
c5aa993b | 10890 | static void |
0b39b52e | 10891 | watch_command (const char *arg, int from_tty) |
c906108c | 10892 | { |
06a64a0b | 10893 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10894 | } |
10895 | ||
8b93c638 | 10896 | void |
f2fc3015 | 10897 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10898 | { |
84f4c1fe | 10899 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10900 | } |
8926118c | 10901 | |
c5aa993b | 10902 | static void |
0b39b52e | 10903 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10904 | { |
06a64a0b | 10905 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10906 | } |
10907 | ||
8b93c638 | 10908 | void |
f2fc3015 | 10909 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10910 | { |
84f4c1fe | 10911 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10912 | } |
8926118c | 10913 | |
c5aa993b | 10914 | static void |
0b39b52e | 10915 | awatch_command (const char *arg, int from_tty) |
c906108c | 10916 | { |
06a64a0b | 10917 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10918 | } |
c906108c | 10919 | \f |
c5aa993b | 10920 | |
cfc31633 PA |
10921 | /* Data for the FSM that manages the until(location)/advance commands |
10922 | in infcmd.c. Here because it uses the mechanisms of | |
10923 | breakpoints. */ | |
c906108c | 10924 | |
46e3ed7f | 10925 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10926 | { |
46e3ed7f | 10927 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10928 | int thread; |
10929 | ||
10930 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10931 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10932 | |
10933 | /* Breakpoint set at the return address in the caller frame. May be | |
10934 | NULL. */ | |
46e3ed7f | 10935 | breakpoint_up caller_breakpoint; |
cfc31633 | 10936 | |
46e3ed7f TT |
10937 | until_break_fsm (struct interp *cmd_interp, int thread, |
10938 | breakpoint_up &&location_breakpoint, | |
10939 | breakpoint_up &&caller_breakpoint) | |
10940 | : thread_fsm (cmd_interp), | |
10941 | thread (thread), | |
10942 | location_breakpoint (std::move (location_breakpoint)), | |
10943 | caller_breakpoint (std::move (caller_breakpoint)) | |
10944 | { | |
10945 | } | |
cfc31633 | 10946 | |
46e3ed7f TT |
10947 | void clean_up (struct thread_info *thread) override; |
10948 | bool should_stop (struct thread_info *thread) override; | |
10949 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10950 | }; |
10951 | ||
cfc31633 PA |
10952 | /* Implementation of the 'should_stop' FSM method for the |
10953 | until(location)/advance commands. */ | |
10954 | ||
46e3ed7f TT |
10955 | bool |
10956 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10957 | { |
cfc31633 | 10958 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10959 | location_breakpoint.get ()) != NULL |
10960 | || (caller_breakpoint != NULL | |
cfc31633 | 10961 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10962 | caller_breakpoint.get ()) != NULL)) |
10963 | set_finished (); | |
cfc31633 | 10964 | |
46e3ed7f | 10965 | return true; |
cfc31633 PA |
10966 | } |
10967 | ||
10968 | /* Implementation of the 'clean_up' FSM method for the | |
10969 | until(location)/advance commands. */ | |
10970 | ||
46e3ed7f TT |
10971 | void |
10972 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10973 | { |
cfc31633 | 10974 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10975 | location_breakpoint.reset (); |
10976 | caller_breakpoint.reset (); | |
10977 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
10978 | } |
10979 | ||
10980 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10981 | until(location)/advance commands. */ | |
10982 | ||
46e3ed7f TT |
10983 | enum async_reply_reason |
10984 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10985 | { |
10986 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10987 | } |
10988 | ||
c906108c | 10989 | void |
f2fc3015 | 10990 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10991 | { |
8556afb4 PA |
10992 | struct frame_info *frame; |
10993 | struct gdbarch *frame_gdbarch; | |
10994 | struct frame_id stack_frame_id; | |
10995 | struct frame_id caller_frame_id; | |
186c406b TT |
10996 | int thread; |
10997 | struct thread_info *tp; | |
c906108c | 10998 | |
70509625 | 10999 | clear_proceed_status (0); |
c906108c SS |
11000 | |
11001 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11002 | this function. */ |
c5aa993b | 11003 | |
ffc2605c | 11004 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11005 | |
6c5b2ebe PA |
11006 | std::vector<symtab_and_line> sals |
11007 | = (last_displayed_sal_is_valid () | |
11008 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11009 | get_last_displayed_symtab (), | |
11010 | get_last_displayed_line ()) | |
11011 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11012 | NULL, NULL, 0)); |
c5aa993b | 11013 | |
6c5b2ebe | 11014 | if (sals.size () != 1) |
8a3fe4f8 | 11015 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11016 | |
6c5b2ebe | 11017 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11018 | |
c906108c | 11019 | if (*arg) |
8a3fe4f8 | 11020 | error (_("Junk at end of arguments.")); |
c5aa993b | 11021 | |
c906108c | 11022 | resolve_sal_pc (&sal); |
c5aa993b | 11023 | |
186c406b | 11024 | tp = inferior_thread (); |
5d5658a1 | 11025 | thread = tp->global_num; |
186c406b | 11026 | |
8556afb4 PA |
11027 | /* Note linespec handling above invalidates the frame chain. |
11028 | Installing a breakpoint also invalidates the frame chain (as it | |
11029 | may need to switch threads), so do any frame handling before | |
11030 | that. */ | |
11031 | ||
11032 | frame = get_selected_frame (NULL); | |
11033 | frame_gdbarch = get_frame_arch (frame); | |
11034 | stack_frame_id = get_stack_frame_id (frame); | |
11035 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11036 | |
ae66c1fc EZ |
11037 | /* Keep within the current frame, or in frames called by the current |
11038 | one. */ | |
edb3359d | 11039 | |
454dafbd | 11040 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11041 | |
11042 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11043 | ||
883bc8d1 | 11044 | if (frame_id_p (caller_frame_id)) |
c906108c | 11045 | { |
883bc8d1 | 11046 | struct symtab_and_line sal2; |
cfc31633 | 11047 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11048 | |
11049 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11050 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11051 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11052 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11053 | sal2, | |
11054 | caller_frame_id, | |
11055 | bp_until); | |
186c406b | 11056 | |
883bc8d1 | 11057 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11058 | lj_deleter.emplace (thread); |
c906108c | 11059 | } |
c5aa993b | 11060 | |
c70a6932 JK |
11061 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11062 | frame = NULL; | |
11063 | ||
454dafbd | 11064 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11065 | if (anywhere) |
11066 | /* If the user told us to continue until a specified location, | |
11067 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11068 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11069 | null_frame_id, bp_until); | |
883bc8d1 PA |
11070 | else |
11071 | /* Otherwise, specify the selected frame, because we want to stop | |
11072 | only at the very same frame. */ | |
cfc31633 PA |
11073 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11074 | stack_frame_id, bp_until); | |
883bc8d1 | 11075 | |
46e3ed7f TT |
11076 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11077 | std::move (location_breakpoint), | |
11078 | std::move (caller_breakpoint)); | |
f107f563 | 11079 | |
5419bdae TT |
11080 | if (lj_deleter) |
11081 | lj_deleter->release (); | |
f107f563 | 11082 | |
cfc31633 | 11083 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11084 | } |
ae66c1fc | 11085 | |
c906108c SS |
11086 | /* This function attempts to parse an optional "if <cond>" clause |
11087 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11088 | |
c906108c SS |
11089 | Else, it returns a pointer to the condition string. (It does not |
11090 | attempt to evaluate the string against a particular block.) And, | |
11091 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11092 | if clause in the arg string. */ |
53a5351d | 11093 | |
63160a43 PA |
11094 | const char * |
11095 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11096 | { |
63160a43 | 11097 | const char *cond_string; |
c5aa993b JM |
11098 | |
11099 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11100 | return NULL; |
c5aa993b | 11101 | |
4a64f543 | 11102 | /* Skip the "if" keyword. */ |
c906108c | 11103 | (*arg) += 2; |
c5aa993b | 11104 | |
c906108c | 11105 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11106 | condition string. */ |
f1735a53 | 11107 | *arg = skip_spaces (*arg); |
c906108c | 11108 | cond_string = *arg; |
c5aa993b | 11109 | |
4a64f543 MS |
11110 | /* Assume that the condition occupies the remainder of the arg |
11111 | string. */ | |
c906108c | 11112 | (*arg) += strlen (cond_string); |
c5aa993b | 11113 | |
c906108c SS |
11114 | return cond_string; |
11115 | } | |
c5aa993b | 11116 | |
c906108c SS |
11117 | /* Commands to deal with catching events, such as signals, exceptions, |
11118 | process start/exit, etc. */ | |
c5aa993b JM |
11119 | |
11120 | typedef enum | |
11121 | { | |
44feb3ce TT |
11122 | catch_fork_temporary, catch_vfork_temporary, |
11123 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11124 | } |
11125 | catch_fork_kind; | |
11126 | ||
c906108c | 11127 | static void |
eb4c3f4a | 11128 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11129 | struct cmd_list_element *command) |
c906108c | 11130 | { |
a6d9a66e | 11131 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11132 | const char *cond_string = NULL; |
44feb3ce TT |
11133 | catch_fork_kind fork_kind; |
11134 | int tempflag; | |
11135 | ||
11136 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11137 | tempflag = (fork_kind == catch_fork_temporary | |
11138 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11139 | |
44feb3ce TT |
11140 | if (!arg) |
11141 | arg = ""; | |
f1735a53 | 11142 | arg = skip_spaces (arg); |
c5aa993b | 11143 | |
c906108c | 11144 | /* The allowed syntax is: |
c5aa993b JM |
11145 | catch [v]fork |
11146 | catch [v]fork if <cond> | |
11147 | ||
4a64f543 | 11148 | First, check if there's an if clause. */ |
c906108c | 11149 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11150 | |
c906108c | 11151 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11152 | error (_("Junk at end of arguments.")); |
c5aa993b | 11153 | |
c906108c | 11154 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11155 | and enable reporting of such events. */ |
c5aa993b JM |
11156 | switch (fork_kind) |
11157 | { | |
44feb3ce TT |
11158 | case catch_fork_temporary: |
11159 | case catch_fork_permanent: | |
a6d9a66e | 11160 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11161 | &catch_fork_breakpoint_ops); |
c906108c | 11162 | break; |
44feb3ce TT |
11163 | case catch_vfork_temporary: |
11164 | case catch_vfork_permanent: | |
a6d9a66e | 11165 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11166 | &catch_vfork_breakpoint_ops); |
c906108c | 11167 | break; |
c5aa993b | 11168 | default: |
8a3fe4f8 | 11169 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11170 | break; |
c5aa993b | 11171 | } |
c906108c SS |
11172 | } |
11173 | ||
11174 | static void | |
eb4c3f4a | 11175 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11176 | struct cmd_list_element *command) |
c906108c | 11177 | { |
a6d9a66e | 11178 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11179 | int tempflag; |
63160a43 | 11180 | const char *cond_string = NULL; |
c906108c | 11181 | |
44feb3ce TT |
11182 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11183 | ||
11184 | if (!arg) | |
11185 | arg = ""; | |
f1735a53 | 11186 | arg = skip_spaces (arg); |
c906108c SS |
11187 | |
11188 | /* The allowed syntax is: | |
c5aa993b JM |
11189 | catch exec |
11190 | catch exec if <cond> | |
c906108c | 11191 | |
4a64f543 | 11192 | First, check if there's an if clause. */ |
c906108c SS |
11193 | cond_string = ep_parse_optional_if_clause (&arg); |
11194 | ||
11195 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11196 | error (_("Junk at end of arguments.")); |
c906108c | 11197 | |
b270e6f9 TT |
11198 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11199 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11200 | &catch_exec_breakpoint_ops); |
11201 | c->exec_pathname = NULL; | |
11202 | ||
b270e6f9 | 11203 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11204 | } |
c5aa993b | 11205 | |
9ac4176b | 11206 | void |
28010a5d PA |
11207 | init_ada_exception_breakpoint (struct breakpoint *b, |
11208 | struct gdbarch *gdbarch, | |
11209 | struct symtab_and_line sal, | |
f2fc3015 | 11210 | const char *addr_string, |
c0a91b2b | 11211 | const struct breakpoint_ops *ops, |
28010a5d | 11212 | int tempflag, |
349774ef | 11213 | int enabled, |
28010a5d | 11214 | int from_tty) |
f7f9143b | 11215 | { |
f7f9143b JB |
11216 | if (from_tty) |
11217 | { | |
5af949e3 UW |
11218 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11219 | if (!loc_gdbarch) | |
11220 | loc_gdbarch = gdbarch; | |
11221 | ||
6c95b8df PA |
11222 | describe_other_breakpoints (loc_gdbarch, |
11223 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11224 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11225 | version for exception catchpoints, because two catchpoints | |
11226 | used for different exception names will use the same address. | |
11227 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11228 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11229 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11230 | the user what type of catchpoint it is. The above is good |
11231 | enough for now, though. */ | |
11232 | } | |
11233 | ||
28010a5d | 11234 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11235 | |
349774ef | 11236 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11237 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11238 | b->location = string_to_event_location (&addr_string, |
11239 | language_def (language_ada)); | |
f7f9143b | 11240 | b->language = language_ada; |
f7f9143b JB |
11241 | } |
11242 | ||
c906108c | 11243 | static void |
981a3fb3 | 11244 | catch_command (const char *arg, int from_tty) |
c906108c | 11245 | { |
44feb3ce | 11246 | error (_("Catch requires an event name.")); |
c906108c SS |
11247 | } |
11248 | \f | |
11249 | ||
11250 | static void | |
981a3fb3 | 11251 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11252 | { |
44feb3ce | 11253 | error (_("Catch requires an event name.")); |
c906108c SS |
11254 | } |
11255 | ||
81b1e71c | 11256 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11257 | |
11258 | static int | |
81b1e71c | 11259 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11260 | { |
81b1e71c TT |
11261 | uintptr_t ua = (uintptr_t) a; |
11262 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11263 | |
81b1e71c | 11264 | if (a->number < b->number) |
8a2c437b | 11265 | return -1; |
81b1e71c | 11266 | else if (a->number > b->number) |
8a2c437b TT |
11267 | return 1; |
11268 | ||
11269 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11270 | the number 0. */ | |
11271 | if (ua < ub) | |
11272 | return -1; | |
94b0e70d | 11273 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11274 | } |
11275 | ||
80f8a6eb | 11276 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11277 | |
11278 | static void | |
0b39b52e | 11279 | clear_command (const char *arg, int from_tty) |
c906108c | 11280 | { |
81b1e71c | 11281 | struct breakpoint *b; |
c906108c | 11282 | int default_match; |
c906108c | 11283 | |
6c5b2ebe PA |
11284 | std::vector<symtab_and_line> decoded_sals; |
11285 | symtab_and_line last_sal; | |
11286 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11287 | if (arg) |
11288 | { | |
6c5b2ebe PA |
11289 | decoded_sals |
11290 | = decode_line_with_current_source (arg, | |
11291 | (DECODE_LINE_FUNFIRSTLINE | |
11292 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11293 | default_match = 0; |
6c5b2ebe | 11294 | sals = decoded_sals; |
c906108c SS |
11295 | } |
11296 | else | |
11297 | { | |
1bfeeb0f JL |
11298 | /* Set sal's line, symtab, pc, and pspace to the values |
11299 | corresponding to the last call to print_frame_info. If the | |
11300 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11301 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11302 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11303 | error (_("No source file specified.")); |
c906108c | 11304 | |
c906108c | 11305 | default_match = 1; |
6c5b2ebe | 11306 | sals = last_sal; |
c906108c SS |
11307 | } |
11308 | ||
4a64f543 MS |
11309 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11310 | seems, because all existing breakpoints typically have both | |
11311 | file/line and pc set. So, if clear is given file/line, we can | |
11312 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11313 | |
11314 | We only support clearing given the address explicitly | |
11315 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11316 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11317 | due to optimization, all in one block. |
4a64f543 MS |
11318 | |
11319 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11320 | PC corresponding to the same file:line, the breakpoint won't |
11321 | be cleared. We probably can still clear the breakpoint, but | |
11322 | since the other PC value is never presented to user, user | |
11323 | can only find it by guessing, and it does not seem important | |
11324 | to support that. */ | |
11325 | ||
4a64f543 MS |
11326 | /* For each line spec given, delete bps which correspond to it. Do |
11327 | it in two passes, solely to preserve the current behavior that | |
11328 | from_tty is forced true if we delete more than one | |
11329 | breakpoint. */ | |
c906108c | 11330 | |
81b1e71c | 11331 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11332 | for (const auto &sal : sals) |
c906108c | 11333 | { |
05cba821 JK |
11334 | const char *sal_fullname; |
11335 | ||
c906108c | 11336 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11337 | If line given (pc == 0), clear all bpts on specified line. |
11338 | If defaulting, clear all bpts on default line | |
c906108c | 11339 | or at default pc. |
c5aa993b JM |
11340 | |
11341 | defaulting sal.pc != 0 tests to do | |
11342 | ||
11343 | 0 1 pc | |
11344 | 1 1 pc _and_ line | |
11345 | 0 0 line | |
11346 | 1 0 <can't happen> */ | |
c906108c | 11347 | |
05cba821 JK |
11348 | sal_fullname = (sal.symtab == NULL |
11349 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11350 | |
4a64f543 | 11351 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11352 | ALL_BREAKPOINTS (b) |
c5aa993b | 11353 | { |
0d381245 | 11354 | int match = 0; |
4a64f543 | 11355 | /* Are we going to delete b? */ |
cc60f2e3 | 11356 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11357 | { |
11358 | struct bp_location *loc = b->loc; | |
11359 | for (; loc; loc = loc->next) | |
11360 | { | |
f8eba3c6 TT |
11361 | /* If the user specified file:line, don't allow a PC |
11362 | match. This matches historical gdb behavior. */ | |
11363 | int pc_match = (!sal.explicit_line | |
11364 | && sal.pc | |
11365 | && (loc->pspace == sal.pspace) | |
11366 | && (loc->address == sal.pc) | |
11367 | && (!section_is_overlay (loc->section) | |
11368 | || loc->section == sal.section)); | |
4aac40c8 TT |
11369 | int line_match = 0; |
11370 | ||
11371 | if ((default_match || sal.explicit_line) | |
2f202fde | 11372 | && loc->symtab != NULL |
05cba821 | 11373 | && sal_fullname != NULL |
4aac40c8 | 11374 | && sal.pspace == loc->pspace |
05cba821 JK |
11375 | && loc->line_number == sal.line |
11376 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11377 | sal_fullname) == 0) | |
11378 | line_match = 1; | |
4aac40c8 | 11379 | |
0d381245 VP |
11380 | if (pc_match || line_match) |
11381 | { | |
11382 | match = 1; | |
11383 | break; | |
11384 | } | |
11385 | } | |
11386 | } | |
11387 | ||
11388 | if (match) | |
81b1e71c | 11389 | found.push_back (b); |
c906108c | 11390 | } |
80f8a6eb | 11391 | } |
8a2c437b | 11392 | |
80f8a6eb | 11393 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11394 | if (found.empty ()) |
80f8a6eb MS |
11395 | { |
11396 | if (arg) | |
8a3fe4f8 | 11397 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11398 | else |
8a3fe4f8 | 11399 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11400 | } |
c906108c | 11401 | |
8a2c437b | 11402 | /* Remove duplicates from the vec. */ |
81b1e71c | 11403 | std::sort (found.begin (), found.end (), |
b926417a | 11404 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11405 | { |
b926417a | 11406 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11407 | }); |
11408 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11409 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11410 | { |
b926417a | 11411 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11412 | }), |
11413 | found.end ()); | |
8a2c437b | 11414 | |
81b1e71c | 11415 | if (found.size () > 1) |
4a64f543 | 11416 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11417 | if (from_tty) |
a3f17187 | 11418 | { |
81b1e71c | 11419 | if (found.size () == 1) |
a3f17187 AC |
11420 | printf_unfiltered (_("Deleted breakpoint ")); |
11421 | else | |
11422 | printf_unfiltered (_("Deleted breakpoints ")); | |
11423 | } | |
d6e956e5 | 11424 | |
81b1e71c | 11425 | for (breakpoint *iter : found) |
80f8a6eb | 11426 | { |
c5aa993b | 11427 | if (from_tty) |
81b1e71c TT |
11428 | printf_unfiltered ("%d ", iter->number); |
11429 | delete_breakpoint (iter); | |
c906108c | 11430 | } |
80f8a6eb MS |
11431 | if (from_tty) |
11432 | putchar_unfiltered ('\n'); | |
c906108c SS |
11433 | } |
11434 | \f | |
11435 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11436 | all breakpoints that are marked for deletion, whether hit or not. | |
11437 | This is called after any breakpoint is hit, or after errors. */ | |
11438 | ||
11439 | void | |
fba45db2 | 11440 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11441 | { |
35df4500 | 11442 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11443 | |
11444 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11445 | if (bs->breakpoint_at |
11446 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11447 | && bs->stop) |
f431efe5 | 11448 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11449 | |
35df4500 | 11450 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11451 | { |
b5de0fa7 | 11452 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11453 | delete_breakpoint (b); |
11454 | } | |
c906108c SS |
11455 | } |
11456 | ||
4a64f543 MS |
11457 | /* A comparison function for bp_location AP and BP being interfaced to |
11458 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
cb1e4e32 PA |
11459 | bl_address_is_meaningful says), secondarily by ordering first |
11460 | permanent elements and terciarily just ensuring the array is sorted | |
11461 | stable way despite qsort being an unstable algorithm. */ | |
876fa593 JK |
11462 | |
11463 | static int | |
f5336ca5 | 11464 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11465 | { |
9a3c8263 SM |
11466 | const struct bp_location *a = *(const struct bp_location **) ap; |
11467 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11468 | |
11469 | if (a->address != b->address) | |
11470 | return (a->address > b->address) - (a->address < b->address); | |
11471 | ||
dea2aa5f LM |
11472 | /* Sort locations at the same address by their pspace number, keeping |
11473 | locations of the same inferior (in a multi-inferior environment) | |
11474 | grouped. */ | |
11475 | ||
11476 | if (a->pspace->num != b->pspace->num) | |
11477 | return ((a->pspace->num > b->pspace->num) | |
11478 | - (a->pspace->num < b->pspace->num)); | |
11479 | ||
876fa593 | 11480 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11481 | if (a->permanent != b->permanent) |
11482 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11483 | |
c56a97f9 JK |
11484 | /* Make the internal GDB representation stable across GDB runs |
11485 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11486 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11487 | |
11488 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11489 | return ((a->owner->number > b->owner->number) |
11490 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11491 | |
11492 | return (a > b) - (a < b); | |
11493 | } | |
11494 | ||
f5336ca5 PA |
11495 | /* Set bp_locations_placed_address_before_address_max and |
11496 | bp_locations_shadow_len_after_address_max according to the current | |
11497 | content of the bp_locations array. */ | |
f7545552 TT |
11498 | |
11499 | static void | |
f5336ca5 | 11500 | bp_locations_target_extensions_update (void) |
f7545552 | 11501 | { |
876fa593 JK |
11502 | struct bp_location *bl, **blp_tmp; |
11503 | ||
f5336ca5 PA |
11504 | bp_locations_placed_address_before_address_max = 0; |
11505 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11506 | |
11507 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11508 | { | |
11509 | CORE_ADDR start, end, addr; | |
11510 | ||
11511 | if (!bp_location_has_shadow (bl)) | |
11512 | continue; | |
11513 | ||
11514 | start = bl->target_info.placed_address; | |
11515 | end = start + bl->target_info.shadow_len; | |
11516 | ||
11517 | gdb_assert (bl->address >= start); | |
11518 | addr = bl->address - start; | |
f5336ca5 PA |
11519 | if (addr > bp_locations_placed_address_before_address_max) |
11520 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11521 | |
11522 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11523 | ||
11524 | gdb_assert (bl->address < end); | |
11525 | addr = end - bl->address; | |
f5336ca5 PA |
11526 | if (addr > bp_locations_shadow_len_after_address_max) |
11527 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11528 | } |
f7545552 TT |
11529 | } |
11530 | ||
1e4d1764 YQ |
11531 | /* Download tracepoint locations if they haven't been. */ |
11532 | ||
11533 | static void | |
11534 | download_tracepoint_locations (void) | |
11535 | { | |
7ed2c994 | 11536 | struct breakpoint *b; |
dd2e65cc | 11537 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11538 | |
5ed8105e | 11539 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11540 | |
7ed2c994 | 11541 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11542 | { |
7ed2c994 | 11543 | struct bp_location *bl; |
1e4d1764 | 11544 | struct tracepoint *t; |
f2a8bc8a | 11545 | int bp_location_downloaded = 0; |
1e4d1764 | 11546 | |
7ed2c994 | 11547 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11548 | ? !may_insert_fast_tracepoints |
11549 | : !may_insert_tracepoints)) | |
11550 | continue; | |
11551 | ||
dd2e65cc YQ |
11552 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11553 | { | |
11554 | if (target_can_download_tracepoint ()) | |
11555 | can_download_tracepoint = TRIBOOL_TRUE; | |
11556 | else | |
11557 | can_download_tracepoint = TRIBOOL_FALSE; | |
11558 | } | |
11559 | ||
11560 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11561 | break; | |
11562 | ||
7ed2c994 YQ |
11563 | for (bl = b->loc; bl; bl = bl->next) |
11564 | { | |
11565 | /* In tracepoint, locations are _never_ duplicated, so | |
11566 | should_be_inserted is equivalent to | |
11567 | unduplicated_should_be_inserted. */ | |
11568 | if (!should_be_inserted (bl) || bl->inserted) | |
11569 | continue; | |
1e4d1764 | 11570 | |
7ed2c994 | 11571 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11572 | |
7ed2c994 | 11573 | target_download_tracepoint (bl); |
1e4d1764 | 11574 | |
7ed2c994 | 11575 | bl->inserted = 1; |
f2a8bc8a | 11576 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11577 | } |
11578 | t = (struct tracepoint *) b; | |
11579 | t->number_on_target = b->number; | |
f2a8bc8a | 11580 | if (bp_location_downloaded) |
76727919 | 11581 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11582 | } |
1e4d1764 YQ |
11583 | } |
11584 | ||
934709f0 PW |
11585 | /* Swap the insertion/duplication state between two locations. */ |
11586 | ||
11587 | static void | |
11588 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11589 | { | |
11590 | const int left_inserted = left->inserted; | |
11591 | const int left_duplicate = left->duplicate; | |
b775012e | 11592 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11593 | const struct bp_target_info left_target_info = left->target_info; |
11594 | ||
1e4d1764 YQ |
11595 | /* Locations of tracepoints can never be duplicated. */ |
11596 | if (is_tracepoint (left->owner)) | |
11597 | gdb_assert (!left->duplicate); | |
11598 | if (is_tracepoint (right->owner)) | |
11599 | gdb_assert (!right->duplicate); | |
11600 | ||
934709f0 PW |
11601 | left->inserted = right->inserted; |
11602 | left->duplicate = right->duplicate; | |
b775012e | 11603 | left->needs_update = right->needs_update; |
934709f0 PW |
11604 | left->target_info = right->target_info; |
11605 | right->inserted = left_inserted; | |
11606 | right->duplicate = left_duplicate; | |
b775012e | 11607 | right->needs_update = left_needs_update; |
934709f0 PW |
11608 | right->target_info = left_target_info; |
11609 | } | |
11610 | ||
b775012e LM |
11611 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11612 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11613 | conditions on the target's side. Such conditions need to be updated on | |
11614 | the target. */ | |
11615 | ||
11616 | static void | |
11617 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11618 | { | |
11619 | struct bp_location **locp = NULL, **loc2p; | |
11620 | struct bp_location *loc; | |
11621 | CORE_ADDR address = 0; | |
11622 | int pspace_num; | |
11623 | ||
11624 | address = bl->address; | |
11625 | pspace_num = bl->pspace->num; | |
11626 | ||
11627 | /* This is only meaningful if the target is | |
11628 | evaluating conditions and if the user has | |
11629 | opted for condition evaluation on the target's | |
11630 | side. */ | |
11631 | if (gdb_evaluates_breakpoint_condition_p () | |
11632 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11633 | return; | |
11634 | ||
11635 | /* Flag all breakpoint locations with this address and | |
11636 | the same program space as the location | |
11637 | as "its condition has changed". We need to | |
11638 | update the conditions on the target's side. */ | |
11639 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11640 | { | |
11641 | loc = *loc2p; | |
11642 | ||
11643 | if (!is_breakpoint (loc->owner) | |
11644 | || pspace_num != loc->pspace->num) | |
11645 | continue; | |
11646 | ||
11647 | /* Flag the location appropriately. We use a different state to | |
11648 | let everyone know that we already updated the set of locations | |
11649 | with addr bl->address and program space bl->pspace. This is so | |
11650 | we don't have to keep calling these functions just to mark locations | |
11651 | that have already been marked. */ | |
11652 | loc->condition_changed = condition_updated; | |
11653 | ||
11654 | /* Free the agent expression bytecode as well. We will compute | |
11655 | it later on. */ | |
833177a4 | 11656 | loc->cond_bytecode.reset (); |
b775012e LM |
11657 | } |
11658 | } | |
44702360 PA |
11659 | /* Called whether new breakpoints are created, or existing breakpoints |
11660 | deleted, to update the global location list and recompute which | |
11661 | locations are duplicate of which. | |
b775012e | 11662 | |
04086b45 PA |
11663 | The INSERT_MODE flag determines whether locations may not, may, or |
11664 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11665 | info. */ | |
b60e7edf | 11666 | |
0d381245 | 11667 | static void |
44702360 | 11668 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11669 | { |
74960c60 | 11670 | struct breakpoint *b; |
876fa593 | 11671 | struct bp_location **locp, *loc; |
b775012e LM |
11672 | /* Last breakpoint location address that was marked for update. */ |
11673 | CORE_ADDR last_addr = 0; | |
11674 | /* Last breakpoint location program space that was marked for update. */ | |
11675 | int last_pspace_num = -1; | |
f7545552 | 11676 | |
2d134ed3 PA |
11677 | /* Used in the duplicates detection below. When iterating over all |
11678 | bp_locations, points to the first bp_location of a given address. | |
11679 | Breakpoints and watchpoints of different types are never | |
11680 | duplicates of each other. Keep one pointer for each type of | |
11681 | breakpoint/watchpoint, so we only need to loop over all locations | |
11682 | once. */ | |
11683 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11684 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11685 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11686 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11687 | |
f5336ca5 PA |
11688 | /* Saved former bp_locations array which we compare against the newly |
11689 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11690 | struct bp_location **old_locp; |
f5336ca5 | 11691 | unsigned old_locations_count; |
81b1e71c | 11692 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11693 | |
f5336ca5 PA |
11694 | old_locations_count = bp_locations_count; |
11695 | bp_locations = NULL; | |
11696 | bp_locations_count = 0; | |
0d381245 | 11697 | |
74960c60 | 11698 | ALL_BREAKPOINTS (b) |
876fa593 | 11699 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11700 | bp_locations_count++; |
876fa593 | 11701 | |
f5336ca5 PA |
11702 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11703 | locp = bp_locations; | |
876fa593 JK |
11704 | ALL_BREAKPOINTS (b) |
11705 | for (loc = b->loc; loc; loc = loc->next) | |
11706 | *locp++ = loc; | |
f5336ca5 PA |
11707 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11708 | bp_locations_compare); | |
876fa593 | 11709 | |
f5336ca5 | 11710 | bp_locations_target_extensions_update (); |
74960c60 | 11711 | |
4a64f543 MS |
11712 | /* Identify bp_location instances that are no longer present in the |
11713 | new list, and therefore should be freed. Note that it's not | |
11714 | necessary that those locations should be removed from inferior -- | |
11715 | if there's another location at the same address (previously | |
11716 | marked as duplicate), we don't need to remove/insert the | |
11717 | location. | |
876fa593 | 11718 | |
4a64f543 MS |
11719 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11720 | and former bp_location array state respectively. */ | |
876fa593 | 11721 | |
f5336ca5 | 11722 | locp = bp_locations; |
81b1e71c TT |
11723 | for (old_locp = old_locations.get (); |
11724 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11725 | old_locp++) |
74960c60 | 11726 | { |
876fa593 | 11727 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11728 | struct bp_location **loc2p; |
876fa593 | 11729 | |
e5dd4106 | 11730 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11731 | not, we have to free it. */ |
c7d46a38 | 11732 | int found_object = 0; |
20874c92 VP |
11733 | /* Tells if the location should remain inserted in the target. */ |
11734 | int keep_in_target = 0; | |
11735 | int removed = 0; | |
876fa593 | 11736 | |
4a64f543 MS |
11737 | /* Skip LOCP entries which will definitely never be needed. |
11738 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11739 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11740 | && (*locp)->address < old_loc->address) |
876fa593 | 11741 | locp++; |
c7d46a38 PA |
11742 | |
11743 | for (loc2p = locp; | |
f5336ca5 | 11744 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11745 | && (*loc2p)->address == old_loc->address); |
11746 | loc2p++) | |
11747 | { | |
b775012e LM |
11748 | /* Check if this is a new/duplicated location or a duplicated |
11749 | location that had its condition modified. If so, we want to send | |
11750 | its condition to the target if evaluation of conditions is taking | |
11751 | place there. */ | |
11752 | if ((*loc2p)->condition_changed == condition_modified | |
11753 | && (last_addr != old_loc->address | |
11754 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11755 | { |
b775012e LM |
11756 | force_breakpoint_reinsertion (*loc2p); |
11757 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11758 | } |
b775012e LM |
11759 | |
11760 | if (*loc2p == old_loc) | |
11761 | found_object = 1; | |
c7d46a38 | 11762 | } |
74960c60 | 11763 | |
b775012e LM |
11764 | /* We have already handled this address, update it so that we don't |
11765 | have to go through updates again. */ | |
11766 | last_addr = old_loc->address; | |
11767 | ||
11768 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11769 | if (!found_object) | |
11770 | force_breakpoint_reinsertion (old_loc); | |
11771 | ||
4a64f543 MS |
11772 | /* If this location is no longer present, and inserted, look if |
11773 | there's maybe a new location at the same address. If so, | |
11774 | mark that one inserted, and don't remove this one. This is | |
11775 | needed so that we don't have a time window where a breakpoint | |
11776 | at certain location is not inserted. */ | |
74960c60 | 11777 | |
876fa593 | 11778 | if (old_loc->inserted) |
0d381245 | 11779 | { |
4a64f543 MS |
11780 | /* If the location is inserted now, we might have to remove |
11781 | it. */ | |
74960c60 | 11782 | |
876fa593 | 11783 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11784 | { |
4a64f543 MS |
11785 | /* The location is still present in the location list, |
11786 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11787 | keep_in_target = 1; |
74960c60 VP |
11788 | } |
11789 | else | |
11790 | { | |
b775012e LM |
11791 | /* This location still exists, but it won't be kept in the |
11792 | target since it may have been disabled. We proceed to | |
11793 | remove its target-side condition. */ | |
11794 | ||
4a64f543 MS |
11795 | /* The location is either no longer present, or got |
11796 | disabled. See if there's another location at the | |
11797 | same address, in which case we don't need to remove | |
11798 | this one from the target. */ | |
876fa593 | 11799 | |
2bdf28a0 | 11800 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11801 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11802 | { |
876fa593 | 11803 | for (loc2p = locp; |
f5336ca5 | 11804 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11805 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11806 | loc2p++) |
11807 | { | |
11808 | struct bp_location *loc2 = *loc2p; | |
11809 | ||
2d134ed3 | 11810 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11811 | { |
85d721b8 PA |
11812 | /* Read watchpoint locations are switched to |
11813 | access watchpoints, if the former are not | |
11814 | supported, but the latter are. */ | |
11815 | if (is_hardware_watchpoint (old_loc->owner)) | |
11816 | { | |
11817 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11818 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11819 | } | |
11820 | ||
934709f0 PW |
11821 | /* loc2 is a duplicated location. We need to check |
11822 | if it should be inserted in case it will be | |
11823 | unduplicated. */ | |
11824 | if (loc2 != old_loc | |
11825 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11826 | { |
934709f0 | 11827 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11828 | keep_in_target = 1; |
11829 | break; | |
11830 | } | |
876fa593 JK |
11831 | } |
11832 | } | |
11833 | } | |
74960c60 VP |
11834 | } |
11835 | ||
20874c92 VP |
11836 | if (!keep_in_target) |
11837 | { | |
834c0d03 | 11838 | if (remove_breakpoint (old_loc)) |
20874c92 | 11839 | { |
4a64f543 MS |
11840 | /* This is just about all we can do. We could keep |
11841 | this location on the global list, and try to | |
11842 | remove it next time, but there's no particular | |
11843 | reason why we will succeed next time. | |
20874c92 | 11844 | |
4a64f543 MS |
11845 | Note that at this point, old_loc->owner is still |
11846 | valid, as delete_breakpoint frees the breakpoint | |
11847 | only after calling us. */ | |
3e43a32a MS |
11848 | printf_filtered (_("warning: Error removing " |
11849 | "breakpoint %d\n"), | |
876fa593 | 11850 | old_loc->owner->number); |
20874c92 VP |
11851 | } |
11852 | removed = 1; | |
11853 | } | |
0d381245 | 11854 | } |
74960c60 VP |
11855 | |
11856 | if (!found_object) | |
1c5cfe86 | 11857 | { |
fbea99ea | 11858 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11859 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11860 | { |
db82e815 PA |
11861 | /* This location was removed from the target. In |
11862 | non-stop mode, a race condition is possible where | |
11863 | we've removed a breakpoint, but stop events for that | |
11864 | breakpoint are already queued and will arrive later. | |
11865 | We apply an heuristic to be able to distinguish such | |
11866 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11867 | breakpoint location for a bit, and will retire it | |
11868 | after we see some number of events. The theory here | |
11869 | is that reporting of events should, "on the average", | |
11870 | be fair, so after a while we'll see events from all | |
11871 | threads that have anything of interest, and no longer | |
11872 | need to keep this breakpoint location around. We | |
11873 | don't hold locations forever so to reduce chances of | |
11874 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11875 | SIGTRAP. | |
11876 | ||
11877 | The heuristic failing can be disastrous on | |
11878 | decr_pc_after_break targets. | |
11879 | ||
11880 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11881 | if we fail to recognize a late breakpoint SIGTRAP, | |
11882 | because events_till_retirement has reached 0 too | |
11883 | soon, we'll fail to do the PC adjustment, and report | |
11884 | a random SIGTRAP to the user. When the user resumes | |
11885 | the inferior, it will most likely immediately crash | |
2dec564e | 11886 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11887 | corrupted, because of being resumed e.g., in the |
11888 | middle of a multi-byte instruction, or skipped a | |
11889 | one-byte instruction. This was actually seen happen | |
11890 | on native x86-linux, and should be less rare on | |
11891 | targets that do not support new thread events, like | |
11892 | remote, due to the heuristic depending on | |
11893 | thread_count. | |
11894 | ||
11895 | Mistaking a random SIGTRAP for a breakpoint trap | |
11896 | causes similar symptoms (PC adjustment applied when | |
11897 | it shouldn't), but then again, playing with SIGTRAPs | |
11898 | behind the debugger's back is asking for trouble. | |
11899 | ||
11900 | Since hardware watchpoint traps are always | |
11901 | distinguishable from other traps, so we don't need to | |
11902 | apply keep hardware watchpoint moribund locations | |
11903 | around. We simply always ignore hardware watchpoint | |
11904 | traps we can no longer explain. */ | |
11905 | ||
876fa593 JK |
11906 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11907 | old_loc->owner = NULL; | |
20874c92 | 11908 | |
1123588c | 11909 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11910 | } |
11911 | else | |
f431efe5 PA |
11912 | { |
11913 | old_loc->owner = NULL; | |
11914 | decref_bp_location (&old_loc); | |
11915 | } | |
20874c92 | 11916 | } |
74960c60 | 11917 | } |
1c5cfe86 | 11918 | |
348d480f PA |
11919 | /* Rescan breakpoints at the same address and section, marking the |
11920 | first one as "first" and any others as "duplicates". This is so | |
11921 | that the bpt instruction is only inserted once. If we have a | |
11922 | permanent breakpoint at the same place as BPT, make that one the | |
11923 | official one, and the rest as duplicates. Permanent breakpoints | |
11924 | are sorted first for the same address. | |
11925 | ||
11926 | Do the same for hardware watchpoints, but also considering the | |
11927 | watchpoint's type (regular/access/read) and length. */ | |
11928 | ||
11929 | bp_loc_first = NULL; | |
11930 | wp_loc_first = NULL; | |
11931 | awp_loc_first = NULL; | |
11932 | rwp_loc_first = NULL; | |
11933 | ALL_BP_LOCATIONS (loc, locp) | |
11934 | { | |
11935 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11936 | non-NULL. */ | |
348d480f | 11937 | struct bp_location **loc_first_p; |
d3fbdd86 | 11938 | b = loc->owner; |
348d480f | 11939 | |
6f380991 | 11940 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11941 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11942 | /* Don't detect duplicate for tracepoint locations because they are |
11943 | never duplicated. See the comments in field `duplicate' of | |
11944 | `struct bp_location'. */ | |
348d480f | 11945 | || is_tracepoint (b)) |
b775012e LM |
11946 | { |
11947 | /* Clear the condition modification flag. */ | |
11948 | loc->condition_changed = condition_unchanged; | |
11949 | continue; | |
11950 | } | |
348d480f | 11951 | |
348d480f PA |
11952 | if (b->type == bp_hardware_watchpoint) |
11953 | loc_first_p = &wp_loc_first; | |
11954 | else if (b->type == bp_read_watchpoint) | |
11955 | loc_first_p = &rwp_loc_first; | |
11956 | else if (b->type == bp_access_watchpoint) | |
11957 | loc_first_p = &awp_loc_first; | |
11958 | else | |
11959 | loc_first_p = &bp_loc_first; | |
11960 | ||
11961 | if (*loc_first_p == NULL | |
11962 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11963 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11964 | { | |
11965 | *loc_first_p = loc; | |
11966 | loc->duplicate = 0; | |
b775012e LM |
11967 | |
11968 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11969 | { | |
11970 | loc->needs_update = 1; | |
11971 | /* Clear the condition modification flag. */ | |
11972 | loc->condition_changed = condition_unchanged; | |
11973 | } | |
348d480f PA |
11974 | continue; |
11975 | } | |
11976 | ||
934709f0 PW |
11977 | |
11978 | /* This and the above ensure the invariant that the first location | |
11979 | is not duplicated, and is the inserted one. | |
11980 | All following are marked as duplicated, and are not inserted. */ | |
11981 | if (loc->inserted) | |
11982 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11983 | loc->duplicate = 1; |
11984 | ||
b775012e LM |
11985 | /* Clear the condition modification flag. */ |
11986 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11987 | } |
11988 | ||
a25a5a45 | 11989 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11990 | { |
04086b45 | 11991 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11992 | insert_breakpoint_locations (); |
11993 | else | |
11994 | { | |
44702360 PA |
11995 | /* Even though the caller told us to not insert new |
11996 | locations, we may still need to update conditions on the | |
11997 | target's side of breakpoints that were already inserted | |
11998 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11999 | only update conditions for locations that are marked |
12000 | "needs_update". */ | |
12001 | update_inserted_breakpoint_locations (); | |
12002 | } | |
12003 | } | |
348d480f | 12004 | |
04086b45 | 12005 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12006 | download_tracepoint_locations (); |
348d480f PA |
12007 | } |
12008 | ||
12009 | void | |
12010 | breakpoint_retire_moribund (void) | |
12011 | { | |
1123588c TT |
12012 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12013 | { | |
12014 | struct bp_location *loc = moribund_locations[ix]; | |
12015 | if (--(loc->events_till_retirement) == 0) | |
12016 | { | |
12017 | decref_bp_location (&loc); | |
12018 | unordered_remove (moribund_locations, ix); | |
12019 | --ix; | |
12020 | } | |
12021 | } | |
348d480f PA |
12022 | } |
12023 | ||
12024 | static void | |
44702360 | 12025 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12026 | { |
348d480f | 12027 | |
a70b8144 | 12028 | try |
492d29ea PA |
12029 | { |
12030 | update_global_location_list (insert_mode); | |
12031 | } | |
230d2906 | 12032 | catch (const gdb_exception_error &e) |
492d29ea PA |
12033 | { |
12034 | } | |
348d480f PA |
12035 | } |
12036 | ||
12037 | /* Clear BKP from a BPS. */ | |
12038 | ||
12039 | static void | |
12040 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12041 | { | |
12042 | bpstat bs; | |
12043 | ||
12044 | for (bs = bps; bs; bs = bs->next) | |
12045 | if (bs->breakpoint_at == bpt) | |
12046 | { | |
12047 | bs->breakpoint_at = NULL; | |
12048 | bs->old_val = NULL; | |
12049 | /* bs->commands will be freed later. */ | |
12050 | } | |
12051 | } | |
12052 | ||
12053 | /* Callback for iterate_over_threads. */ | |
12054 | static int | |
12055 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12056 | { | |
9a3c8263 | 12057 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12058 | |
12059 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12060 | return 0; | |
12061 | } | |
12062 | ||
12063 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12064 | callbacks. */ | |
12065 | ||
12066 | static void | |
12067 | say_where (struct breakpoint *b) | |
12068 | { | |
12069 | struct value_print_options opts; | |
12070 | ||
12071 | get_user_print_options (&opts); | |
12072 | ||
12073 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12074 | single string. */ | |
12075 | if (b->loc == NULL) | |
12076 | { | |
f00aae0f KS |
12077 | /* For pending locations, the output differs slightly based |
12078 | on b->extra_string. If this is non-NULL, it contains either | |
12079 | a condition or dprintf arguments. */ | |
12080 | if (b->extra_string == NULL) | |
12081 | { | |
12082 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12083 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12084 | } |
12085 | else if (b->type == bp_dprintf) | |
12086 | { | |
12087 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12088 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12089 | b->extra_string); |
12090 | } | |
12091 | else | |
12092 | { | |
12093 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12094 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12095 | b->extra_string); |
12096 | } | |
348d480f PA |
12097 | } |
12098 | else | |
12099 | { | |
2f202fde | 12100 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12101 | { |
12102 | printf_filtered (" at "); | |
2636d81d PW |
12103 | fputs_styled (paddress (b->loc->gdbarch, b->loc->address), |
12104 | address_style.style (), | |
12105 | gdb_stdout); | |
348d480f | 12106 | } |
2f202fde | 12107 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12108 | { |
12109 | /* If there is a single location, we can print the location | |
12110 | more nicely. */ | |
12111 | if (b->loc->next == NULL) | |
0bb296cb TT |
12112 | { |
12113 | puts_filtered (": file "); | |
12114 | fputs_styled (symtab_to_filename_for_display (b->loc->symtab), | |
12115 | file_name_style.style (), | |
12116 | gdb_stdout); | |
12117 | printf_filtered (", line %d.", | |
12118 | b->loc->line_number); | |
12119 | } | |
f8eba3c6 TT |
12120 | else |
12121 | /* This is not ideal, but each location may have a | |
12122 | different file name, and this at least reflects the | |
12123 | real situation somewhat. */ | |
f00aae0f | 12124 | printf_filtered (": %s.", |
d28cd78a | 12125 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12126 | } |
348d480f PA |
12127 | |
12128 | if (b->loc->next) | |
12129 | { | |
12130 | struct bp_location *loc = b->loc; | |
12131 | int n = 0; | |
12132 | for (; loc; loc = loc->next) | |
12133 | ++n; | |
12134 | printf_filtered (" (%d locations)", n); | |
12135 | } | |
12136 | } | |
12137 | } | |
12138 | ||
5f486660 | 12139 | bp_location::~bp_location () |
348d480f | 12140 | { |
5f486660 | 12141 | xfree (function_name); |
348d480f PA |
12142 | } |
12143 | ||
c1fc2657 | 12144 | /* Destructor for the breakpoint base class. */ |
348d480f | 12145 | |
c1fc2657 | 12146 | breakpoint::~breakpoint () |
348d480f | 12147 | { |
c1fc2657 SM |
12148 | xfree (this->cond_string); |
12149 | xfree (this->extra_string); | |
12150 | xfree (this->filter); | |
348d480f PA |
12151 | } |
12152 | ||
2060206e PA |
12153 | static struct bp_location * |
12154 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12155 | { |
5f486660 | 12156 | return new bp_location (self); |
348d480f PA |
12157 | } |
12158 | ||
2060206e PA |
12159 | static void |
12160 | base_breakpoint_re_set (struct breakpoint *b) | |
12161 | { | |
12162 | /* Nothing to re-set. */ | |
12163 | } | |
12164 | ||
12165 | #define internal_error_pure_virtual_called() \ | |
12166 | gdb_assert_not_reached ("pure virtual function called") | |
12167 | ||
12168 | static int | |
12169 | base_breakpoint_insert_location (struct bp_location *bl) | |
12170 | { | |
12171 | internal_error_pure_virtual_called (); | |
12172 | } | |
12173 | ||
12174 | static int | |
73971819 PA |
12175 | base_breakpoint_remove_location (struct bp_location *bl, |
12176 | enum remove_bp_reason reason) | |
2060206e PA |
12177 | { |
12178 | internal_error_pure_virtual_called (); | |
12179 | } | |
12180 | ||
12181 | static int | |
12182 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12183 | const address_space *aspace, |
09ac7c10 TT |
12184 | CORE_ADDR bp_addr, |
12185 | const struct target_waitstatus *ws) | |
2060206e PA |
12186 | { |
12187 | internal_error_pure_virtual_called (); | |
12188 | } | |
12189 | ||
12190 | static void | |
12191 | base_breakpoint_check_status (bpstat bs) | |
12192 | { | |
12193 | /* Always stop. */ | |
12194 | } | |
12195 | ||
12196 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12197 | errors. */ | |
12198 | ||
12199 | static int | |
12200 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12201 | { | |
12202 | internal_error_pure_virtual_called (); | |
12203 | } | |
12204 | ||
12205 | /* A "resources_needed" breakpoint_ops method that just internal | |
12206 | errors. */ | |
12207 | ||
12208 | static int | |
12209 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12210 | { | |
12211 | internal_error_pure_virtual_called (); | |
12212 | } | |
12213 | ||
12214 | static enum print_stop_action | |
12215 | base_breakpoint_print_it (bpstat bs) | |
12216 | { | |
12217 | internal_error_pure_virtual_called (); | |
12218 | } | |
12219 | ||
12220 | static void | |
12221 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12222 | struct ui_out *uiout) | |
12223 | { | |
12224 | /* nothing */ | |
12225 | } | |
12226 | ||
12227 | static void | |
12228 | base_breakpoint_print_mention (struct breakpoint *b) | |
12229 | { | |
12230 | internal_error_pure_virtual_called (); | |
12231 | } | |
12232 | ||
12233 | static void | |
12234 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12235 | { | |
12236 | internal_error_pure_virtual_called (); | |
12237 | } | |
12238 | ||
983af33b | 12239 | static void |
f00aae0f KS |
12240 | base_breakpoint_create_sals_from_location |
12241 | (const struct event_location *location, | |
12242 | struct linespec_result *canonical, | |
12243 | enum bptype type_wanted) | |
983af33b SDJ |
12244 | { |
12245 | internal_error_pure_virtual_called (); | |
12246 | } | |
12247 | ||
12248 | static void | |
12249 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12250 | struct linespec_result *c, | |
e1e01040 PA |
12251 | gdb::unique_xmalloc_ptr<char> cond_string, |
12252 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12253 | enum bptype type_wanted, |
12254 | enum bpdisp disposition, | |
12255 | int thread, | |
12256 | int task, int ignore_count, | |
12257 | const struct breakpoint_ops *o, | |
12258 | int from_tty, int enabled, | |
44f238bb | 12259 | int internal, unsigned flags) |
983af33b SDJ |
12260 | { |
12261 | internal_error_pure_virtual_called (); | |
12262 | } | |
12263 | ||
6c5b2ebe | 12264 | static std::vector<symtab_and_line> |
f00aae0f KS |
12265 | base_breakpoint_decode_location (struct breakpoint *b, |
12266 | const struct event_location *location, | |
6c5b2ebe | 12267 | struct program_space *search_pspace) |
983af33b SDJ |
12268 | { |
12269 | internal_error_pure_virtual_called (); | |
12270 | } | |
12271 | ||
ab04a2af TT |
12272 | /* The default 'explains_signal' method. */ |
12273 | ||
47591c29 | 12274 | static int |
427cd150 | 12275 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12276 | { |
47591c29 | 12277 | return 1; |
ab04a2af TT |
12278 | } |
12279 | ||
9d6e6e84 HZ |
12280 | /* The default "after_condition_true" method. */ |
12281 | ||
12282 | static void | |
12283 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12284 | { | |
12285 | /* Nothing to do. */ | |
12286 | } | |
12287 | ||
ab04a2af | 12288 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12289 | { |
2060206e PA |
12290 | base_breakpoint_allocate_location, |
12291 | base_breakpoint_re_set, | |
12292 | base_breakpoint_insert_location, | |
12293 | base_breakpoint_remove_location, | |
12294 | base_breakpoint_breakpoint_hit, | |
12295 | base_breakpoint_check_status, | |
12296 | base_breakpoint_resources_needed, | |
12297 | base_breakpoint_works_in_software_mode, | |
12298 | base_breakpoint_print_it, | |
12299 | NULL, | |
12300 | base_breakpoint_print_one_detail, | |
12301 | base_breakpoint_print_mention, | |
983af33b | 12302 | base_breakpoint_print_recreate, |
5f700d83 | 12303 | base_breakpoint_create_sals_from_location, |
983af33b | 12304 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12305 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12306 | base_breakpoint_explains_signal, |
12307 | base_breakpoint_after_condition_true, | |
2060206e PA |
12308 | }; |
12309 | ||
12310 | /* Default breakpoint_ops methods. */ | |
12311 | ||
12312 | static void | |
348d480f PA |
12313 | bkpt_re_set (struct breakpoint *b) |
12314 | { | |
06edf0c0 | 12315 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12316 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12317 | { |
f00aae0f | 12318 | /* Anything without a location can't be re-set. */ |
348d480f | 12319 | delete_breakpoint (b); |
06edf0c0 | 12320 | return; |
348d480f | 12321 | } |
06edf0c0 PA |
12322 | |
12323 | breakpoint_re_set_default (b); | |
348d480f PA |
12324 | } |
12325 | ||
2060206e | 12326 | static int |
348d480f PA |
12327 | bkpt_insert_location (struct bp_location *bl) |
12328 | { | |
cd6c3b4f YQ |
12329 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12330 | ||
579c6ad9 | 12331 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12332 | bl->target_info.placed_address = addr; |
12333 | ||
348d480f | 12334 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12335 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12336 | else |
7c16b83e | 12337 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12338 | } |
12339 | ||
2060206e | 12340 | static int |
73971819 | 12341 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12342 | { |
12343 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12344 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12345 | else | |
73971819 | 12346 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12347 | } |
12348 | ||
2060206e | 12349 | static int |
348d480f | 12350 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12351 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12352 | const struct target_waitstatus *ws) |
348d480f | 12353 | { |
09ac7c10 | 12354 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12355 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12356 | return 0; |
12357 | ||
348d480f PA |
12358 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12359 | aspace, bp_addr)) | |
12360 | return 0; | |
12361 | ||
12362 | if (overlay_debugging /* unmapped overlay section */ | |
12363 | && section_is_overlay (bl->section) | |
12364 | && !section_is_mapped (bl->section)) | |
12365 | return 0; | |
12366 | ||
12367 | return 1; | |
12368 | } | |
12369 | ||
cd1608cc PA |
12370 | static int |
12371 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12372 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12373 | const struct target_waitstatus *ws) |
12374 | { | |
12375 | if (dprintf_style == dprintf_style_agent | |
12376 | && target_can_run_breakpoint_commands ()) | |
12377 | { | |
12378 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12379 | for this address it must be for a breakpoint that happens to | |
12380 | be set at the same address. */ | |
12381 | return 0; | |
12382 | } | |
12383 | ||
12384 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12385 | } | |
12386 | ||
2060206e | 12387 | static int |
348d480f PA |
12388 | bkpt_resources_needed (const struct bp_location *bl) |
12389 | { | |
12390 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12391 | ||
12392 | return 1; | |
12393 | } | |
12394 | ||
2060206e | 12395 | static enum print_stop_action |
348d480f PA |
12396 | bkpt_print_it (bpstat bs) |
12397 | { | |
348d480f PA |
12398 | struct breakpoint *b; |
12399 | const struct bp_location *bl; | |
001c8c33 | 12400 | int bp_temp; |
79a45e25 | 12401 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12402 | |
12403 | gdb_assert (bs->bp_location_at != NULL); | |
12404 | ||
12405 | bl = bs->bp_location_at; | |
12406 | b = bs->breakpoint_at; | |
12407 | ||
001c8c33 PA |
12408 | bp_temp = b->disposition == disp_del; |
12409 | if (bl->address != bl->requested_address) | |
12410 | breakpoint_adjustment_warning (bl->requested_address, | |
12411 | bl->address, | |
12412 | b->number, 1); | |
12413 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12414 | maybe_print_thread_hit_breakpoint (uiout); |
12415 | ||
001c8c33 | 12416 | if (bp_temp) |
112e8700 | 12417 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12418 | else |
112e8700 SM |
12419 | uiout->text ("Breakpoint "); |
12420 | if (uiout->is_mi_like_p ()) | |
348d480f | 12421 | { |
112e8700 | 12422 | uiout->field_string ("reason", |
001c8c33 | 12423 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12424 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12425 | } |
112e8700 SM |
12426 | uiout->field_int ("bkptno", b->number); |
12427 | uiout->text (", "); | |
06edf0c0 | 12428 | |
001c8c33 | 12429 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12430 | } |
12431 | ||
2060206e | 12432 | static void |
06edf0c0 PA |
12433 | bkpt_print_mention (struct breakpoint *b) |
12434 | { | |
112e8700 | 12435 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12436 | return; |
12437 | ||
12438 | switch (b->type) | |
12439 | { | |
12440 | case bp_breakpoint: | |
12441 | case bp_gnu_ifunc_resolver: | |
12442 | if (b->disposition == disp_del) | |
12443 | printf_filtered (_("Temporary breakpoint")); | |
12444 | else | |
12445 | printf_filtered (_("Breakpoint")); | |
12446 | printf_filtered (_(" %d"), b->number); | |
12447 | if (b->type == bp_gnu_ifunc_resolver) | |
12448 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12449 | break; | |
12450 | case bp_hardware_breakpoint: | |
12451 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12452 | break; | |
e7e0cddf SS |
12453 | case bp_dprintf: |
12454 | printf_filtered (_("Dprintf %d"), b->number); | |
12455 | break; | |
06edf0c0 PA |
12456 | } |
12457 | ||
12458 | say_where (b); | |
12459 | } | |
12460 | ||
2060206e | 12461 | static void |
06edf0c0 PA |
12462 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12463 | { | |
12464 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12465 | fprintf_unfiltered (fp, "tbreak"); | |
12466 | else if (tp->type == bp_breakpoint) | |
12467 | fprintf_unfiltered (fp, "break"); | |
12468 | else if (tp->type == bp_hardware_breakpoint | |
12469 | && tp->disposition == disp_del) | |
12470 | fprintf_unfiltered (fp, "thbreak"); | |
12471 | else if (tp->type == bp_hardware_breakpoint) | |
12472 | fprintf_unfiltered (fp, "hbreak"); | |
12473 | else | |
12474 | internal_error (__FILE__, __LINE__, | |
12475 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12476 | ||
f00aae0f | 12477 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12478 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12479 | |
12480 | /* Print out extra_string if this breakpoint is pending. It might | |
12481 | contain, for example, conditions that were set by the user. */ | |
12482 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12483 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12484 | ||
dd11a36c | 12485 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12486 | } |
12487 | ||
983af33b | 12488 | static void |
f00aae0f KS |
12489 | bkpt_create_sals_from_location (const struct event_location *location, |
12490 | struct linespec_result *canonical, | |
12491 | enum bptype type_wanted) | |
983af33b | 12492 | { |
f00aae0f | 12493 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12494 | } |
12495 | ||
12496 | static void | |
12497 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12498 | struct linespec_result *canonical, | |
e1e01040 PA |
12499 | gdb::unique_xmalloc_ptr<char> cond_string, |
12500 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12501 | enum bptype type_wanted, |
12502 | enum bpdisp disposition, | |
12503 | int thread, | |
12504 | int task, int ignore_count, | |
12505 | const struct breakpoint_ops *ops, | |
12506 | int from_tty, int enabled, | |
44f238bb | 12507 | int internal, unsigned flags) |
983af33b | 12508 | { |
023fa29b | 12509 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12510 | std::move (cond_string), |
12511 | std::move (extra_string), | |
e7e0cddf | 12512 | type_wanted, |
983af33b SDJ |
12513 | disposition, thread, task, |
12514 | ignore_count, ops, from_tty, | |
44f238bb | 12515 | enabled, internal, flags); |
983af33b SDJ |
12516 | } |
12517 | ||
6c5b2ebe | 12518 | static std::vector<symtab_and_line> |
f00aae0f KS |
12519 | bkpt_decode_location (struct breakpoint *b, |
12520 | const struct event_location *location, | |
6c5b2ebe | 12521 | struct program_space *search_pspace) |
983af33b | 12522 | { |
6c5b2ebe | 12523 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12524 | } |
12525 | ||
06edf0c0 PA |
12526 | /* Virtual table for internal breakpoints. */ |
12527 | ||
12528 | static void | |
12529 | internal_bkpt_re_set (struct breakpoint *b) | |
12530 | { | |
12531 | switch (b->type) | |
12532 | { | |
12533 | /* Delete overlay event and longjmp master breakpoints; they | |
12534 | will be reset later by breakpoint_re_set. */ | |
12535 | case bp_overlay_event: | |
12536 | case bp_longjmp_master: | |
12537 | case bp_std_terminate_master: | |
12538 | case bp_exception_master: | |
12539 | delete_breakpoint (b); | |
12540 | break; | |
12541 | ||
12542 | /* This breakpoint is special, it's set up when the inferior | |
12543 | starts and we really don't want to touch it. */ | |
12544 | case bp_shlib_event: | |
12545 | ||
12546 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12547 | it is set up, we do not want to touch it. */ | |
12548 | case bp_thread_event: | |
12549 | break; | |
12550 | } | |
12551 | } | |
12552 | ||
12553 | static void | |
12554 | internal_bkpt_check_status (bpstat bs) | |
12555 | { | |
a9b3a50f PA |
12556 | if (bs->breakpoint_at->type == bp_shlib_event) |
12557 | { | |
12558 | /* If requested, stop when the dynamic linker notifies GDB of | |
12559 | events. This allows the user to get control and place | |
12560 | breakpoints in initializer routines for dynamically loaded | |
12561 | objects (among other things). */ | |
12562 | bs->stop = stop_on_solib_events; | |
12563 | bs->print = stop_on_solib_events; | |
12564 | } | |
12565 | else | |
12566 | bs->stop = 0; | |
06edf0c0 PA |
12567 | } |
12568 | ||
12569 | static enum print_stop_action | |
12570 | internal_bkpt_print_it (bpstat bs) | |
12571 | { | |
06edf0c0 | 12572 | struct breakpoint *b; |
06edf0c0 | 12573 | |
06edf0c0 PA |
12574 | b = bs->breakpoint_at; |
12575 | ||
06edf0c0 PA |
12576 | switch (b->type) |
12577 | { | |
348d480f PA |
12578 | case bp_shlib_event: |
12579 | /* Did we stop because the user set the stop_on_solib_events | |
12580 | variable? (If so, we report this as a generic, "Stopped due | |
12581 | to shlib event" message.) */ | |
edcc5120 | 12582 | print_solib_event (0); |
348d480f PA |
12583 | break; |
12584 | ||
12585 | case bp_thread_event: | |
12586 | /* Not sure how we will get here. | |
12587 | GDB should not stop for these breakpoints. */ | |
12588 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12589 | break; |
12590 | ||
12591 | case bp_overlay_event: | |
12592 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12593 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12594 | break; |
12595 | ||
12596 | case bp_longjmp_master: | |
12597 | /* These should never be enabled. */ | |
12598 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12599 | break; |
12600 | ||
12601 | case bp_std_terminate_master: | |
12602 | /* These should never be enabled. */ | |
12603 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12604 | "gdb should not stop!\n")); | |
348d480f PA |
12605 | break; |
12606 | ||
12607 | case bp_exception_master: | |
12608 | /* These should never be enabled. */ | |
12609 | printf_filtered (_("Exception Master Breakpoint: " | |
12610 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12611 | break; |
12612 | } | |
12613 | ||
001c8c33 | 12614 | return PRINT_NOTHING; |
06edf0c0 PA |
12615 | } |
12616 | ||
12617 | static void | |
12618 | internal_bkpt_print_mention (struct breakpoint *b) | |
12619 | { | |
12620 | /* Nothing to mention. These breakpoints are internal. */ | |
12621 | } | |
12622 | ||
06edf0c0 PA |
12623 | /* Virtual table for momentary breakpoints */ |
12624 | ||
12625 | static void | |
12626 | momentary_bkpt_re_set (struct breakpoint *b) | |
12627 | { | |
12628 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12629 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12630 | Otherwise these should have been blown away via the cleanup chain |
12631 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12632 | } | |
12633 | ||
12634 | static void | |
12635 | momentary_bkpt_check_status (bpstat bs) | |
12636 | { | |
12637 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12638 | } | |
12639 | ||
12640 | static enum print_stop_action | |
12641 | momentary_bkpt_print_it (bpstat bs) | |
12642 | { | |
001c8c33 | 12643 | return PRINT_UNKNOWN; |
348d480f PA |
12644 | } |
12645 | ||
06edf0c0 PA |
12646 | static void |
12647 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12648 | { |
06edf0c0 | 12649 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12650 | } |
12651 | ||
e2e4d78b JK |
12652 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12653 | ||
12654 | It gets cleared already on the removal of the first one of such placed | |
12655 | breakpoints. This is OK as they get all removed altogether. */ | |
12656 | ||
c1fc2657 | 12657 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12658 | { |
c1fc2657 | 12659 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12660 | |
c1fc2657 | 12661 | if (tp != NULL) |
e2e4d78b | 12662 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12663 | } |
12664 | ||
55aa24fb SDJ |
12665 | /* Specific methods for probe breakpoints. */ |
12666 | ||
12667 | static int | |
12668 | bkpt_probe_insert_location (struct bp_location *bl) | |
12669 | { | |
12670 | int v = bkpt_insert_location (bl); | |
12671 | ||
12672 | if (v == 0) | |
12673 | { | |
12674 | /* The insertion was successful, now let's set the probe's semaphore | |
12675 | if needed. */ | |
935676c9 | 12676 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12677 | } |
12678 | ||
12679 | return v; | |
12680 | } | |
12681 | ||
12682 | static int | |
73971819 PA |
12683 | bkpt_probe_remove_location (struct bp_location *bl, |
12684 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12685 | { |
12686 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12687 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12688 | |
73971819 | 12689 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12690 | } |
12691 | ||
12692 | static void | |
f00aae0f | 12693 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12694 | struct linespec_result *canonical, |
f00aae0f | 12695 | enum bptype type_wanted) |
55aa24fb SDJ |
12696 | { |
12697 | struct linespec_sals lsal; | |
12698 | ||
c2f4122d | 12699 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12700 | lsal.canonical |
12701 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12702 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12703 | } |
12704 | ||
6c5b2ebe | 12705 | static std::vector<symtab_and_line> |
f00aae0f KS |
12706 | bkpt_probe_decode_location (struct breakpoint *b, |
12707 | const struct event_location *location, | |
6c5b2ebe | 12708 | struct program_space *search_pspace) |
55aa24fb | 12709 | { |
6c5b2ebe PA |
12710 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12711 | if (sals.empty ()) | |
55aa24fb | 12712 | error (_("probe not found")); |
6c5b2ebe | 12713 | return sals; |
55aa24fb SDJ |
12714 | } |
12715 | ||
348d480f | 12716 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12717 | |
348d480f PA |
12718 | static void |
12719 | tracepoint_re_set (struct breakpoint *b) | |
12720 | { | |
12721 | breakpoint_re_set_default (b); | |
12722 | } | |
876fa593 | 12723 | |
348d480f PA |
12724 | static int |
12725 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12726 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12727 | const struct target_waitstatus *ws) |
348d480f PA |
12728 | { |
12729 | /* By definition, the inferior does not report stops at | |
12730 | tracepoints. */ | |
12731 | return 0; | |
74960c60 VP |
12732 | } |
12733 | ||
12734 | static void | |
348d480f PA |
12735 | tracepoint_print_one_detail (const struct breakpoint *self, |
12736 | struct ui_out *uiout) | |
74960c60 | 12737 | { |
d9b3f62e | 12738 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12739 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12740 | { |
12741 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12742 | |
112e8700 SM |
12743 | uiout->text ("\tmarker id is "); |
12744 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12745 | tp->static_trace_marker_id); |
112e8700 | 12746 | uiout->text ("\n"); |
348d480f | 12747 | } |
0d381245 VP |
12748 | } |
12749 | ||
a474d7c2 | 12750 | static void |
348d480f | 12751 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12752 | { |
112e8700 | 12753 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12754 | return; |
cc59ec59 | 12755 | |
348d480f PA |
12756 | switch (b->type) |
12757 | { | |
12758 | case bp_tracepoint: | |
12759 | printf_filtered (_("Tracepoint")); | |
12760 | printf_filtered (_(" %d"), b->number); | |
12761 | break; | |
12762 | case bp_fast_tracepoint: | |
12763 | printf_filtered (_("Fast tracepoint")); | |
12764 | printf_filtered (_(" %d"), b->number); | |
12765 | break; | |
12766 | case bp_static_tracepoint: | |
12767 | printf_filtered (_("Static tracepoint")); | |
12768 | printf_filtered (_(" %d"), b->number); | |
12769 | break; | |
12770 | default: | |
12771 | internal_error (__FILE__, __LINE__, | |
12772 | _("unhandled tracepoint type %d"), (int) b->type); | |
12773 | } | |
12774 | ||
12775 | say_where (b); | |
a474d7c2 PA |
12776 | } |
12777 | ||
348d480f | 12778 | static void |
d9b3f62e | 12779 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12780 | { |
d9b3f62e PA |
12781 | struct tracepoint *tp = (struct tracepoint *) self; |
12782 | ||
12783 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12784 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12785 | else if (self->type == bp_static_tracepoint) |
348d480f | 12786 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12787 | else if (self->type == bp_tracepoint) |
348d480f PA |
12788 | fprintf_unfiltered (fp, "trace"); |
12789 | else | |
12790 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12791 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12792 | |
f00aae0f | 12793 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12794 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12795 | print_recreate_thread (self, fp); |
12796 | ||
12797 | if (tp->pass_count) | |
12798 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12799 | } |
12800 | ||
983af33b | 12801 | static void |
f00aae0f KS |
12802 | tracepoint_create_sals_from_location (const struct event_location *location, |
12803 | struct linespec_result *canonical, | |
12804 | enum bptype type_wanted) | |
983af33b | 12805 | { |
f00aae0f | 12806 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12807 | } |
12808 | ||
12809 | static void | |
12810 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12811 | struct linespec_result *canonical, | |
e1e01040 PA |
12812 | gdb::unique_xmalloc_ptr<char> cond_string, |
12813 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12814 | enum bptype type_wanted, |
12815 | enum bpdisp disposition, | |
12816 | int thread, | |
12817 | int task, int ignore_count, | |
12818 | const struct breakpoint_ops *ops, | |
12819 | int from_tty, int enabled, | |
44f238bb | 12820 | int internal, unsigned flags) |
983af33b | 12821 | { |
023fa29b | 12822 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12823 | std::move (cond_string), |
12824 | std::move (extra_string), | |
e7e0cddf | 12825 | type_wanted, |
983af33b SDJ |
12826 | disposition, thread, task, |
12827 | ignore_count, ops, from_tty, | |
44f238bb | 12828 | enabled, internal, flags); |
983af33b SDJ |
12829 | } |
12830 | ||
6c5b2ebe | 12831 | static std::vector<symtab_and_line> |
f00aae0f KS |
12832 | tracepoint_decode_location (struct breakpoint *b, |
12833 | const struct event_location *location, | |
6c5b2ebe | 12834 | struct program_space *search_pspace) |
983af33b | 12835 | { |
6c5b2ebe | 12836 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12837 | } |
12838 | ||
2060206e | 12839 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12840 | |
55aa24fb SDJ |
12841 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12842 | static probe. */ | |
12843 | ||
12844 | static void | |
f00aae0f KS |
12845 | tracepoint_probe_create_sals_from_location |
12846 | (const struct event_location *location, | |
12847 | struct linespec_result *canonical, | |
12848 | enum bptype type_wanted) | |
55aa24fb SDJ |
12849 | { |
12850 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12851 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12852 | } |
12853 | ||
6c5b2ebe | 12854 | static std::vector<symtab_and_line> |
f00aae0f KS |
12855 | tracepoint_probe_decode_location (struct breakpoint *b, |
12856 | const struct event_location *location, | |
6c5b2ebe | 12857 | struct program_space *search_pspace) |
55aa24fb SDJ |
12858 | { |
12859 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12860 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12861 | } |
12862 | ||
12863 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12864 | ||
5c2b4418 HZ |
12865 | /* Dprintf breakpoint_ops methods. */ |
12866 | ||
12867 | static void | |
12868 | dprintf_re_set (struct breakpoint *b) | |
12869 | { | |
12870 | breakpoint_re_set_default (b); | |
12871 | ||
f00aae0f KS |
12872 | /* extra_string should never be non-NULL for dprintf. */ |
12873 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12874 | |
12875 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12876 | 2 - create a dprintf, which resolves fine. | |
12877 | 3 - disconnect from target 1 | |
12878 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12879 | ||
12880 | After steps #3/#4, you'll want the dprintf command list to | |
12881 | be updated, because target 1 and 2 may well return different | |
12882 | answers for target_can_run_breakpoint_commands(). | |
12883 | Given absence of finer grained resetting, we get to do | |
12884 | it all the time. */ | |
12885 | if (b->extra_string != NULL) | |
12886 | update_dprintf_command_list (b); | |
12887 | } | |
12888 | ||
2d9442cc HZ |
12889 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12890 | ||
12891 | static void | |
12892 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12893 | { | |
f00aae0f | 12894 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12895 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12896 | tp->extra_string); |
12897 | print_recreate_thread (tp, fp); | |
12898 | } | |
12899 | ||
9d6e6e84 HZ |
12900 | /* Implement the "after_condition_true" breakpoint_ops method for |
12901 | dprintf. | |
12902 | ||
12903 | dprintf's are implemented with regular commands in their command | |
12904 | list, but we run the commands here instead of before presenting the | |
12905 | stop to the user, as dprintf's don't actually cause a stop. This | |
12906 | also makes it so that the commands of multiple dprintfs at the same | |
12907 | address are all handled. */ | |
12908 | ||
12909 | static void | |
12910 | dprintf_after_condition_true (struct bpstats *bs) | |
12911 | { | |
04afa70c | 12912 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12913 | struct bpstats *tmp_bs_p = &tmp_bs; |
12914 | ||
12915 | /* dprintf's never cause a stop. This wasn't set in the | |
12916 | check_status hook instead because that would make the dprintf's | |
12917 | condition not be evaluated. */ | |
12918 | bs->stop = 0; | |
12919 | ||
12920 | /* Run the command list here. Take ownership of it instead of | |
12921 | copying. We never want these commands to run later in | |
12922 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12923 | be set at same address as this dprintf, or even if running the | |
12924 | commands here throws. */ | |
12925 | tmp_bs.commands = bs->commands; | |
12926 | bs->commands = NULL; | |
9d6e6e84 HZ |
12927 | |
12928 | bpstat_do_actions_1 (&tmp_bs_p); | |
12929 | ||
12930 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12931 | bpstat_do_actions_1 may return early without processing the whole | |
12932 | list. */ | |
9d6e6e84 HZ |
12933 | } |
12934 | ||
983af33b SDJ |
12935 | /* The breakpoint_ops structure to be used on static tracepoints with |
12936 | markers (`-m'). */ | |
12937 | ||
12938 | static void | |
f00aae0f | 12939 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12940 | struct linespec_result *canonical, |
f00aae0f | 12941 | enum bptype type_wanted) |
983af33b SDJ |
12942 | { |
12943 | struct linespec_sals lsal; | |
f00aae0f | 12944 | const char *arg_start, *arg; |
983af33b | 12945 | |
a20714ff | 12946 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12947 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12948 | |
f2fc3015 TT |
12949 | std::string str (arg_start, arg - arg_start); |
12950 | const char *ptr = str.c_str (); | |
a20714ff PA |
12951 | canonical->location |
12952 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12953 | |
8e9e35b1 TT |
12954 | lsal.canonical |
12955 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12956 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12957 | } |
12958 | ||
12959 | static void | |
12960 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12961 | struct linespec_result *canonical, | |
e1e01040 PA |
12962 | gdb::unique_xmalloc_ptr<char> cond_string, |
12963 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12964 | enum bptype type_wanted, |
12965 | enum bpdisp disposition, | |
12966 | int thread, | |
12967 | int task, int ignore_count, | |
12968 | const struct breakpoint_ops *ops, | |
12969 | int from_tty, int enabled, | |
44f238bb | 12970 | int internal, unsigned flags) |
983af33b | 12971 | { |
6c5b2ebe | 12972 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12973 | |
12974 | /* If the user is creating a static tracepoint by marker id | |
12975 | (strace -m MARKER_ID), then store the sals index, so that | |
12976 | breakpoint_re_set can try to match up which of the newly | |
12977 | found markers corresponds to this one, and, don't try to | |
12978 | expand multiple locations for each sal, given than SALS | |
12979 | already should contain all sals for MARKER_ID. */ | |
12980 | ||
6c5b2ebe | 12981 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12982 | { |
6c5b2ebe PA |
12983 | event_location_up location |
12984 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12985 | |
b270e6f9 | 12986 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 12987 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 12988 | std::move (location), NULL, |
e1e01040 PA |
12989 | std::move (cond_string), |
12990 | std::move (extra_string), | |
e7e0cddf | 12991 | type_wanted, disposition, |
983af33b | 12992 | thread, task, ignore_count, ops, |
44f238bb | 12993 | from_tty, enabled, internal, flags, |
983af33b SDJ |
12994 | canonical->special_display); |
12995 | /* Given that its possible to have multiple markers with | |
12996 | the same string id, if the user is creating a static | |
12997 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12998 | store the sals index, so that breakpoint_re_set can | |
12999 | try to match up which of the newly found markers | |
13000 | corresponds to this one */ | |
13001 | tp->static_trace_marker_id_idx = i; | |
13002 | ||
b270e6f9 | 13003 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13004 | } |
13005 | } | |
13006 | ||
6c5b2ebe | 13007 | static std::vector<symtab_and_line> |
f00aae0f KS |
13008 | strace_marker_decode_location (struct breakpoint *b, |
13009 | const struct event_location *location, | |
6c5b2ebe | 13010 | struct program_space *search_pspace) |
983af33b SDJ |
13011 | { |
13012 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13013 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13014 | |
6c5b2ebe PA |
13015 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13016 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13017 | { |
6c5b2ebe PA |
13018 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13019 | sals.resize (1); | |
13020 | return sals; | |
983af33b SDJ |
13021 | } |
13022 | else | |
5d9310c4 | 13023 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13024 | } |
13025 | ||
13026 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13027 | ||
13028 | static int | |
13029 | strace_marker_p (struct breakpoint *b) | |
13030 | { | |
13031 | return b->ops == &strace_marker_breakpoint_ops; | |
13032 | } | |
13033 | ||
53a5351d | 13034 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13035 | structures. */ |
c906108c SS |
13036 | |
13037 | void | |
fba45db2 | 13038 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13039 | { |
52f0bd74 | 13040 | struct breakpoint *b; |
c906108c | 13041 | |
8a3fe4f8 | 13042 | gdb_assert (bpt != NULL); |
c906108c | 13043 | |
4a64f543 MS |
13044 | /* Has this bp already been deleted? This can happen because |
13045 | multiple lists can hold pointers to bp's. bpstat lists are | |
13046 | especial culprits. | |
13047 | ||
13048 | One example of this happening is a watchpoint's scope bp. When | |
13049 | the scope bp triggers, we notice that the watchpoint is out of | |
13050 | scope, and delete it. We also delete its scope bp. But the | |
13051 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13052 | That bpstat is then checked for auto-deleting bp's, which are | |
13053 | deleted. | |
13054 | ||
13055 | A real solution to this problem might involve reference counts in | |
13056 | bp's, and/or giving them pointers back to their referencing | |
13057 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13058 | storage when no more references were extent. A cheaper bandaid | |
13059 | was chosen. */ | |
c906108c SS |
13060 | if (bpt->type == bp_none) |
13061 | return; | |
13062 | ||
4a64f543 MS |
13063 | /* At least avoid this stale reference until the reference counting |
13064 | of breakpoints gets resolved. */ | |
d0fb5eae | 13065 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13066 | { |
d0fb5eae | 13067 | struct breakpoint *related; |
3a5c3e22 | 13068 | struct watchpoint *w; |
d0fb5eae JK |
13069 | |
13070 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13071 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13072 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13073 | w = (struct watchpoint *) bpt; |
13074 | else | |
13075 | w = NULL; | |
13076 | if (w != NULL) | |
13077 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13078 | |
13079 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13080 | for (related = bpt; related->related_breakpoint != bpt; | |
13081 | related = related->related_breakpoint); | |
13082 | related->related_breakpoint = bpt->related_breakpoint; | |
13083 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13084 | } |
13085 | ||
a9634178 TJB |
13086 | /* watch_command_1 creates a watchpoint but only sets its number if |
13087 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13088 | a problem in that process, we'll be asked to delete the half-created | |
13089 | watchpoint. In that case, don't announce the deletion. */ | |
13090 | if (bpt->number) | |
76727919 | 13091 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13092 | |
c906108c SS |
13093 | if (breakpoint_chain == bpt) |
13094 | breakpoint_chain = bpt->next; | |
13095 | ||
c906108c SS |
13096 | ALL_BREAKPOINTS (b) |
13097 | if (b->next == bpt) | |
c5aa993b JM |
13098 | { |
13099 | b->next = bpt->next; | |
13100 | break; | |
13101 | } | |
c906108c | 13102 | |
f431efe5 PA |
13103 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13104 | been freed. */ | |
13105 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13106 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13107 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13108 | commands are associated with the bpstat; if we remove it here, | |
13109 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13110 | event-top.c won't do anything, and temporary breakpoints with | |
13111 | commands won't work. */ | |
13112 | ||
13113 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13114 | ||
4a64f543 MS |
13115 | /* Now that breakpoint is removed from breakpoint list, update the |
13116 | global location list. This will remove locations that used to | |
13117 | belong to this breakpoint. Do this before freeing the breakpoint | |
13118 | itself, since remove_breakpoint looks at location's owner. It | |
13119 | might be better design to have location completely | |
13120 | self-contained, but it's not the case now. */ | |
44702360 | 13121 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13122 | |
4a64f543 MS |
13123 | /* On the chance that someone will soon try again to delete this |
13124 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13125 | bpt->type = bp_none; |
4d01a485 | 13126 | delete bpt; |
c906108c SS |
13127 | } |
13128 | ||
51be5b68 PA |
13129 | /* Iterator function to call a user-provided callback function once |
13130 | for each of B and its related breakpoints. */ | |
13131 | ||
13132 | static void | |
13133 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13134 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13135 | { |
13136 | struct breakpoint *related; | |
13137 | ||
13138 | related = b; | |
13139 | do | |
13140 | { | |
13141 | struct breakpoint *next; | |
13142 | ||
13143 | /* FUNCTION may delete RELATED. */ | |
13144 | next = related->related_breakpoint; | |
13145 | ||
13146 | if (next == related) | |
13147 | { | |
13148 | /* RELATED is the last ring entry. */ | |
48649e1b | 13149 | function (related); |
51be5b68 PA |
13150 | |
13151 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13152 | B. There's nothing left to do anyway, so just break | |
13153 | out. */ | |
13154 | break; | |
13155 | } | |
13156 | else | |
48649e1b | 13157 | function (related); |
51be5b68 PA |
13158 | |
13159 | related = next; | |
13160 | } | |
13161 | while (related != b); | |
13162 | } | |
95a42b64 | 13163 | |
4495129a | 13164 | static void |
981a3fb3 | 13165 | delete_command (const char *arg, int from_tty) |
c906108c | 13166 | { |
35df4500 | 13167 | struct breakpoint *b, *b_tmp; |
c906108c | 13168 | |
ea9365bb TT |
13169 | dont_repeat (); |
13170 | ||
c906108c SS |
13171 | if (arg == 0) |
13172 | { | |
13173 | int breaks_to_delete = 0; | |
13174 | ||
46c6471b PA |
13175 | /* Delete all breakpoints if no argument. Do not delete |
13176 | internal breakpoints, these have to be deleted with an | |
13177 | explicit breakpoint number argument. */ | |
c5aa993b | 13178 | ALL_BREAKPOINTS (b) |
46c6471b | 13179 | if (user_breakpoint_p (b)) |
973d738b DJ |
13180 | { |
13181 | breaks_to_delete = 1; | |
13182 | break; | |
13183 | } | |
c906108c SS |
13184 | |
13185 | /* Ask user only if there are some breakpoints to delete. */ | |
13186 | if (!from_tty | |
e2e0b3e5 | 13187 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13188 | { |
35df4500 | 13189 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13190 | if (user_breakpoint_p (b)) |
c5aa993b | 13191 | delete_breakpoint (b); |
c906108c SS |
13192 | } |
13193 | } | |
13194 | else | |
48649e1b | 13195 | map_breakpoint_numbers |
b926417a | 13196 | (arg, [&] (breakpoint *br) |
48649e1b | 13197 | { |
b926417a | 13198 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13199 | }); |
c906108c SS |
13200 | } |
13201 | ||
c2f4122d PA |
13202 | /* Return true if all locations of B bound to PSPACE are pending. If |
13203 | PSPACE is NULL, all locations of all program spaces are | |
13204 | considered. */ | |
13205 | ||
0d381245 | 13206 | static int |
c2f4122d | 13207 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13208 | { |
c2f4122d PA |
13209 | struct bp_location *loc; |
13210 | ||
13211 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13212 | if ((pspace == NULL | |
13213 | || loc->pspace == pspace) | |
13214 | && !loc->shlib_disabled | |
8645ff69 | 13215 | && !loc->pspace->executing_startup) |
0d381245 VP |
13216 | return 0; |
13217 | return 1; | |
fe3f5fa8 VP |
13218 | } |
13219 | ||
776592bf DE |
13220 | /* Subroutine of update_breakpoint_locations to simplify it. |
13221 | Return non-zero if multiple fns in list LOC have the same name. | |
13222 | Null names are ignored. */ | |
13223 | ||
13224 | static int | |
13225 | ambiguous_names_p (struct bp_location *loc) | |
13226 | { | |
13227 | struct bp_location *l; | |
459a2e4c TT |
13228 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13229 | xcalloc, xfree); | |
776592bf DE |
13230 | |
13231 | for (l = loc; l != NULL; l = l->next) | |
13232 | { | |
13233 | const char **slot; | |
13234 | const char *name = l->function_name; | |
13235 | ||
13236 | /* Allow for some names to be NULL, ignore them. */ | |
13237 | if (name == NULL) | |
13238 | continue; | |
13239 | ||
13240 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13241 | INSERT); | |
4a64f543 MS |
13242 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13243 | returns NULL. */ | |
776592bf DE |
13244 | if (*slot != NULL) |
13245 | { | |
13246 | htab_delete (htab); | |
13247 | return 1; | |
13248 | } | |
13249 | *slot = name; | |
13250 | } | |
13251 | ||
13252 | htab_delete (htab); | |
13253 | return 0; | |
13254 | } | |
13255 | ||
0fb4aa4b PA |
13256 | /* When symbols change, it probably means the sources changed as well, |
13257 | and it might mean the static tracepoint markers are no longer at | |
13258 | the same address or line numbers they used to be at last we | |
13259 | checked. Losing your static tracepoints whenever you rebuild is | |
13260 | undesirable. This function tries to resync/rematch gdb static | |
13261 | tracepoints with the markers on the target, for static tracepoints | |
13262 | that have not been set by marker id. Static tracepoint that have | |
13263 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13264 | The heuristic is: | |
13265 | ||
13266 | 1) For a tracepoint set at a specific address, look for a marker at | |
13267 | the old PC. If one is found there, assume to be the same marker. | |
13268 | If the name / string id of the marker found is different from the | |
13269 | previous known name, assume that means the user renamed the marker | |
13270 | in the sources, and output a warning. | |
13271 | ||
13272 | 2) For a tracepoint set at a given line number, look for a marker | |
13273 | at the new address of the old line number. If one is found there, | |
13274 | assume to be the same marker. If the name / string id of the | |
13275 | marker found is different from the previous known name, assume that | |
13276 | means the user renamed the marker in the sources, and output a | |
13277 | warning. | |
13278 | ||
13279 | 3) If a marker is no longer found at the same address or line, it | |
13280 | may mean the marker no longer exists. But it may also just mean | |
13281 | the code changed a bit. Maybe the user added a few lines of code | |
13282 | that made the marker move up or down (in line number terms). Ask | |
13283 | the target for info about the marker with the string id as we knew | |
13284 | it. If found, update line number and address in the matching | |
13285 | static tracepoint. This will get confused if there's more than one | |
13286 | marker with the same ID (possible in UST, although unadvised | |
13287 | precisely because it confuses tools). */ | |
13288 | ||
13289 | static struct symtab_and_line | |
13290 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13291 | { | |
d9b3f62e | 13292 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13293 | struct static_tracepoint_marker marker; |
13294 | CORE_ADDR pc; | |
0fb4aa4b PA |
13295 | |
13296 | pc = sal.pc; | |
13297 | if (sal.line) | |
13298 | find_line_pc (sal.symtab, sal.line, &pc); | |
13299 | ||
13300 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13301 | { | |
5d9310c4 | 13302 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13303 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13304 | b->number, tp->static_trace_marker_id.c_str (), |
13305 | marker.str_id.c_str ()); | |
0fb4aa4b | 13306 | |
5d9310c4 | 13307 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13308 | |
13309 | return sal; | |
13310 | } | |
13311 | ||
13312 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13313 | by string ID. */ | |
13314 | if (!sal.explicit_pc | |
13315 | && sal.line != 0 | |
13316 | && sal.symtab != NULL | |
5d9310c4 | 13317 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13318 | { |
5d9310c4 SM |
13319 | std::vector<static_tracepoint_marker> markers |
13320 | = target_static_tracepoint_markers_by_strid | |
13321 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13322 | |
5d9310c4 | 13323 | if (!markers.empty ()) |
0fb4aa4b | 13324 | { |
0fb4aa4b | 13325 | struct symbol *sym; |
80e1d417 | 13326 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13327 | struct ui_out *uiout = current_uiout; |
67994074 | 13328 | struct explicit_location explicit_loc; |
0fb4aa4b | 13329 | |
5d9310c4 | 13330 | tpmarker = &markers[0]; |
0fb4aa4b | 13331 | |
5d9310c4 | 13332 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13333 | |
13334 | warning (_("marker for static tracepoint %d (%s) not " | |
13335 | "found at previous line number"), | |
5d9310c4 | 13336 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13337 | |
51abb421 | 13338 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13339 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13340 | uiout->text ("Now in "); |
0fb4aa4b PA |
13341 | if (sym) |
13342 | { | |
cbe56571 TT |
13343 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
13344 | ui_out_style_kind::FUNCTION); | |
112e8700 | 13345 | uiout->text (" at "); |
0fb4aa4b | 13346 | } |
112e8700 | 13347 | uiout->field_string ("file", |
cbe56571 TT |
13348 | symtab_to_filename_for_display (sal2.symtab), |
13349 | ui_out_style_kind::FILE); | |
112e8700 | 13350 | uiout->text (":"); |
0fb4aa4b | 13351 | |
112e8700 | 13352 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13353 | { |
0b0865da | 13354 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13355 | |
112e8700 | 13356 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13357 | } |
13358 | ||
112e8700 SM |
13359 | uiout->field_int ("line", sal2.line); |
13360 | uiout->text ("\n"); | |
0fb4aa4b | 13361 | |
80e1d417 | 13362 | b->loc->line_number = sal2.line; |
2f202fde | 13363 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13364 | |
d28cd78a | 13365 | b->location.reset (NULL); |
67994074 KS |
13366 | initialize_explicit_location (&explicit_loc); |
13367 | explicit_loc.source_filename | |
00e52e53 | 13368 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13369 | explicit_loc.line_offset.offset = b->loc->line_number; |
13370 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13371 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13372 | |
13373 | /* Might be nice to check if function changed, and warn if | |
13374 | so. */ | |
0fb4aa4b PA |
13375 | } |
13376 | } | |
13377 | return sal; | |
13378 | } | |
13379 | ||
8d3788bd VP |
13380 | /* Returns 1 iff locations A and B are sufficiently same that |
13381 | we don't need to report breakpoint as changed. */ | |
13382 | ||
13383 | static int | |
13384 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13385 | { | |
13386 | while (a && b) | |
13387 | { | |
13388 | if (a->address != b->address) | |
13389 | return 0; | |
13390 | ||
13391 | if (a->shlib_disabled != b->shlib_disabled) | |
13392 | return 0; | |
13393 | ||
13394 | if (a->enabled != b->enabled) | |
13395 | return 0; | |
13396 | ||
13397 | a = a->next; | |
13398 | b = b->next; | |
13399 | } | |
13400 | ||
13401 | if ((a == NULL) != (b == NULL)) | |
13402 | return 0; | |
13403 | ||
13404 | return 1; | |
13405 | } | |
13406 | ||
c2f4122d PA |
13407 | /* Split all locations of B that are bound to PSPACE out of B's |
13408 | location list to a separate list and return that list's head. If | |
13409 | PSPACE is NULL, hoist out all locations of B. */ | |
13410 | ||
13411 | static struct bp_location * | |
13412 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13413 | { | |
13414 | struct bp_location head; | |
13415 | struct bp_location *i = b->loc; | |
13416 | struct bp_location **i_link = &b->loc; | |
13417 | struct bp_location *hoisted = &head; | |
13418 | ||
13419 | if (pspace == NULL) | |
13420 | { | |
13421 | i = b->loc; | |
13422 | b->loc = NULL; | |
13423 | return i; | |
13424 | } | |
13425 | ||
13426 | head.next = NULL; | |
13427 | ||
13428 | while (i != NULL) | |
13429 | { | |
13430 | if (i->pspace == pspace) | |
13431 | { | |
13432 | *i_link = i->next; | |
13433 | i->next = NULL; | |
13434 | hoisted->next = i; | |
13435 | hoisted = i; | |
13436 | } | |
13437 | else | |
13438 | i_link = &i->next; | |
13439 | i = *i_link; | |
13440 | } | |
13441 | ||
13442 | return head.next; | |
13443 | } | |
13444 | ||
13445 | /* Create new breakpoint locations for B (a hardware or software | |
13446 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13447 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13448 | FILTER_PSPACE. Locations of other program spaces are left | |
13449 | untouched. */ | |
f1310107 | 13450 | |
0e30163f | 13451 | void |
0d381245 | 13452 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13453 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13454 | gdb::array_view<const symtab_and_line> sals, |
13455 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13456 | { |
c2f4122d | 13457 | struct bp_location *existing_locations; |
0d381245 | 13458 | |
6c5b2ebe | 13459 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13460 | { |
13461 | /* Ranged breakpoints have only one start location and one end | |
13462 | location. */ | |
13463 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13464 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13465 | "multiple locations found\n"), | |
13466 | b->number); | |
13467 | return; | |
13468 | } | |
f1310107 | 13469 | |
4a64f543 MS |
13470 | /* If there's no new locations, and all existing locations are |
13471 | pending, don't do anything. This optimizes the common case where | |
13472 | all locations are in the same shared library, that was unloaded. | |
13473 | We'd like to retain the location, so that when the library is | |
13474 | loaded again, we don't loose the enabled/disabled status of the | |
13475 | individual locations. */ | |
6c5b2ebe | 13476 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13477 | return; |
13478 | ||
c2f4122d | 13479 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13480 | |
6c5b2ebe | 13481 | for (const auto &sal : sals) |
fe3f5fa8 | 13482 | { |
f8eba3c6 TT |
13483 | struct bp_location *new_loc; |
13484 | ||
6c5b2ebe | 13485 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13486 | |
6c5b2ebe | 13487 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13488 | |
0d381245 VP |
13489 | /* Reparse conditions, they might contain references to the |
13490 | old symtab. */ | |
13491 | if (b->cond_string != NULL) | |
13492 | { | |
bbc13ae3 | 13493 | const char *s; |
fe3f5fa8 | 13494 | |
0d381245 | 13495 | s = b->cond_string; |
a70b8144 | 13496 | try |
0d381245 | 13497 | { |
6c5b2ebe PA |
13498 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13499 | block_for_pc (sal.pc), | |
0d381245 VP |
13500 | 0); |
13501 | } | |
230d2906 | 13502 | catch (const gdb_exception_error &e) |
0d381245 | 13503 | { |
3e43a32a MS |
13504 | warning (_("failed to reevaluate condition " |
13505 | "for breakpoint %d: %s"), | |
3d6e9d23 | 13506 | b->number, e.what ()); |
0d381245 VP |
13507 | new_loc->enabled = 0; |
13508 | } | |
13509 | } | |
fe3f5fa8 | 13510 | |
6c5b2ebe | 13511 | if (!sals_end.empty ()) |
f1310107 | 13512 | { |
6c5b2ebe | 13513 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13514 | |
6c5b2ebe | 13515 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13516 | } |
0d381245 | 13517 | } |
fe3f5fa8 | 13518 | |
4a64f543 MS |
13519 | /* If possible, carry over 'disable' status from existing |
13520 | breakpoints. */ | |
0d381245 VP |
13521 | { |
13522 | struct bp_location *e = existing_locations; | |
776592bf DE |
13523 | /* If there are multiple breakpoints with the same function name, |
13524 | e.g. for inline functions, comparing function names won't work. | |
13525 | Instead compare pc addresses; this is just a heuristic as things | |
13526 | may have moved, but in practice it gives the correct answer | |
13527 | often enough until a better solution is found. */ | |
13528 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13529 | ||
0d381245 VP |
13530 | for (; e; e = e->next) |
13531 | { | |
13532 | if (!e->enabled && e->function_name) | |
13533 | { | |
13534 | struct bp_location *l = b->loc; | |
776592bf DE |
13535 | if (have_ambiguous_names) |
13536 | { | |
13537 | for (; l; l = l->next) | |
f1310107 | 13538 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13539 | { |
13540 | l->enabled = 0; | |
13541 | break; | |
13542 | } | |
13543 | } | |
13544 | else | |
13545 | { | |
13546 | for (; l; l = l->next) | |
13547 | if (l->function_name | |
13548 | && strcmp (e->function_name, l->function_name) == 0) | |
13549 | { | |
13550 | l->enabled = 0; | |
13551 | break; | |
13552 | } | |
13553 | } | |
0d381245 VP |
13554 | } |
13555 | } | |
13556 | } | |
fe3f5fa8 | 13557 | |
8d3788bd | 13558 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13559 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13560 | } |
13561 | ||
f00aae0f | 13562 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13563 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13564 | ||
6c5b2ebe | 13565 | static std::vector<symtab_and_line> |
f00aae0f | 13566 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13567 | struct program_space *search_pspace, int *found) |
ef23e705 | 13568 | { |
cc06b668 | 13569 | struct gdb_exception exception; |
ef23e705 | 13570 | |
983af33b | 13571 | gdb_assert (b->ops != NULL); |
ef23e705 | 13572 | |
6c5b2ebe PA |
13573 | std::vector<symtab_and_line> sals; |
13574 | ||
a70b8144 | 13575 | try |
ef23e705 | 13576 | { |
6c5b2ebe | 13577 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13578 | } |
94aeb44b | 13579 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13580 | { |
13581 | int not_found_and_ok = 0; | |
492d29ea | 13582 | |
ef23e705 TJB |
13583 | /* For pending breakpoints, it's expected that parsing will |
13584 | fail until the right shared library is loaded. User has | |
13585 | already told to create pending breakpoints and don't need | |
13586 | extra messages. If breakpoint is in bp_shlib_disabled | |
13587 | state, then user already saw the message about that | |
13588 | breakpoint being disabled, and don't want to see more | |
13589 | errors. */ | |
58438ac1 | 13590 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13591 | && (b->condition_not_parsed |
13592 | || (b->loc != NULL | |
13593 | && search_pspace != NULL | |
13594 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13595 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13596 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13597 | || b->enable_state == bp_disabled)) |
13598 | not_found_and_ok = 1; | |
13599 | ||
13600 | if (!not_found_and_ok) | |
13601 | { | |
13602 | /* We surely don't want to warn about the same breakpoint | |
13603 | 10 times. One solution, implemented here, is disable | |
13604 | the breakpoint on error. Another solution would be to | |
13605 | have separate 'warning emitted' flag. Since this | |
13606 | happens only when a binary has changed, I don't know | |
13607 | which approach is better. */ | |
13608 | b->enable_state = bp_disabled; | |
eedc3f4f | 13609 | throw; |
ef23e705 | 13610 | } |
94aeb44b TT |
13611 | |
13612 | exception = std::move (e); | |
ef23e705 TJB |
13613 | } |
13614 | ||
492d29ea | 13615 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13616 | { |
6c5b2ebe PA |
13617 | for (auto &sal : sals) |
13618 | resolve_sal_pc (&sal); | |
f00aae0f | 13619 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13620 | { |
ed1d1739 KS |
13621 | char *cond_string, *extra_string; |
13622 | int thread, task; | |
ef23e705 | 13623 | |
6c5b2ebe | 13624 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13625 | &cond_string, &thread, &task, |
13626 | &extra_string); | |
f00aae0f | 13627 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13628 | if (cond_string) |
13629 | b->cond_string = cond_string; | |
13630 | b->thread = thread; | |
13631 | b->task = task; | |
e7e0cddf | 13632 | if (extra_string) |
f00aae0f KS |
13633 | { |
13634 | xfree (b->extra_string); | |
13635 | b->extra_string = extra_string; | |
13636 | } | |
ef23e705 TJB |
13637 | b->condition_not_parsed = 0; |
13638 | } | |
13639 | ||
983af33b | 13640 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13641 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13642 | |
58438ac1 TT |
13643 | *found = 1; |
13644 | } | |
13645 | else | |
13646 | *found = 0; | |
ef23e705 TJB |
13647 | |
13648 | return sals; | |
13649 | } | |
13650 | ||
348d480f PA |
13651 | /* The default re_set method, for typical hardware or software |
13652 | breakpoints. Reevaluate the breakpoint and recreate its | |
13653 | locations. */ | |
13654 | ||
13655 | static void | |
28010a5d | 13656 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13657 | { |
c2f4122d | 13658 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13659 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13660 | |
6c5b2ebe PA |
13661 | int found; |
13662 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13663 | filter_pspace, &found); | |
ef23e705 | 13664 | if (found) |
6c5b2ebe | 13665 | expanded = std::move (sals); |
ef23e705 | 13666 | |
f00aae0f | 13667 | if (b->location_range_end != NULL) |
f1310107 | 13668 | { |
6c5b2ebe PA |
13669 | std::vector<symtab_and_line> sals_end |
13670 | = location_to_sals (b, b->location_range_end.get (), | |
13671 | filter_pspace, &found); | |
f1310107 | 13672 | if (found) |
6c5b2ebe | 13673 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13674 | } |
13675 | ||
c2f4122d | 13676 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13677 | } |
13678 | ||
983af33b SDJ |
13679 | /* Default method for creating SALs from an address string. It basically |
13680 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13681 | ||
13682 | static void | |
f00aae0f KS |
13683 | create_sals_from_location_default (const struct event_location *location, |
13684 | struct linespec_result *canonical, | |
13685 | enum bptype type_wanted) | |
983af33b | 13686 | { |
f00aae0f | 13687 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13688 | } |
13689 | ||
13690 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13691 | function for the `create_breakpoints_sal' method of | |
13692 | breakpoint_ops. */ | |
13693 | ||
13694 | static void | |
13695 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13696 | struct linespec_result *canonical, | |
e1e01040 PA |
13697 | gdb::unique_xmalloc_ptr<char> cond_string, |
13698 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13699 | enum bptype type_wanted, |
13700 | enum bpdisp disposition, | |
13701 | int thread, | |
13702 | int task, int ignore_count, | |
13703 | const struct breakpoint_ops *ops, | |
13704 | int from_tty, int enabled, | |
44f238bb | 13705 | int internal, unsigned flags) |
983af33b | 13706 | { |
e1e01040 PA |
13707 | create_breakpoints_sal (gdbarch, canonical, |
13708 | std::move (cond_string), | |
13709 | std::move (extra_string), | |
983af33b SDJ |
13710 | type_wanted, disposition, |
13711 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13712 | enabled, internal, flags); |
983af33b SDJ |
13713 | } |
13714 | ||
13715 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13716 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13717 | |
6c5b2ebe | 13718 | static std::vector<symtab_and_line> |
f00aae0f KS |
13719 | decode_location_default (struct breakpoint *b, |
13720 | const struct event_location *location, | |
6c5b2ebe | 13721 | struct program_space *search_pspace) |
983af33b SDJ |
13722 | { |
13723 | struct linespec_result canonical; | |
13724 | ||
c2f4122d | 13725 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13726 | NULL, 0, &canonical, multiple_symbols_all, |
983af33b SDJ |
13727 | b->filter); |
13728 | ||
13729 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13730 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13731 | |
6c5b2ebe | 13732 | if (!canonical.lsals.empty ()) |
983af33b | 13733 | { |
6c5b2ebe PA |
13734 | const linespec_sals &lsal = canonical.lsals[0]; |
13735 | return std::move (lsal.sals); | |
983af33b | 13736 | } |
6c5b2ebe | 13737 | return {}; |
983af33b SDJ |
13738 | } |
13739 | ||
bf469271 | 13740 | /* Reset a breakpoint. */ |
c906108c | 13741 | |
bf469271 PA |
13742 | static void |
13743 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13744 | { |
fdf44873 TT |
13745 | input_radix = b->input_radix; |
13746 | set_language (b->language); | |
c906108c | 13747 | |
348d480f | 13748 | b->ops->re_set (b); |
c906108c SS |
13749 | } |
13750 | ||
c2f4122d PA |
13751 | /* Re-set breakpoint locations for the current program space. |
13752 | Locations bound to other program spaces are left untouched. */ | |
13753 | ||
c906108c | 13754 | void |
69de3c6a | 13755 | breakpoint_re_set (void) |
c906108c | 13756 | { |
35df4500 | 13757 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13758 | |
c5aa993b | 13759 | { |
fdf44873 TT |
13760 | scoped_restore_current_language save_language; |
13761 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13762 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13763 | |
8e817061 JB |
13764 | /* breakpoint_re_set_one sets the current_language to the language |
13765 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13766 | before re-evaluating the breakpoint's location. This change can | |
13767 | unfortunately get undone by accident if the language_mode is set | |
13768 | to auto, and we either switch frames, or more likely in this context, | |
13769 | we select the current frame. | |
13770 | ||
13771 | We prevent this by temporarily turning the language_mode to | |
13772 | language_mode_manual. We restore it once all breakpoints | |
13773 | have been reset. */ | |
13774 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13775 | language_mode = language_mode_manual; | |
13776 | ||
5ed8105e PA |
13777 | /* Note: we must not try to insert locations until after all |
13778 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13779 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13780 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13781 | |
5ed8105e PA |
13782 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13783 | { | |
a70b8144 | 13784 | try |
bf469271 PA |
13785 | { |
13786 | breakpoint_re_set_one (b); | |
13787 | } | |
230d2906 | 13788 | catch (const gdb_exception &ex) |
bf469271 PA |
13789 | { |
13790 | exception_fprintf (gdb_stderr, ex, | |
13791 | "Error in re-setting breakpoint %d: ", | |
13792 | b->number); | |
13793 | } | |
5ed8105e | 13794 | } |
5ed8105e PA |
13795 | |
13796 | jit_breakpoint_re_set (); | |
13797 | } | |
6c95b8df | 13798 | |
af02033e PP |
13799 | create_overlay_event_breakpoint (); |
13800 | create_longjmp_master_breakpoint (); | |
13801 | create_std_terminate_master_breakpoint (); | |
186c406b | 13802 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13803 | |
13804 | /* Now we can insert. */ | |
13805 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13806 | } |
13807 | \f | |
c906108c SS |
13808 | /* Reset the thread number of this breakpoint: |
13809 | ||
13810 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13811 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13812 | void |
fba45db2 | 13813 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13814 | { |
13815 | if (b->thread != -1) | |
13816 | { | |
00431a78 | 13817 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13818 | |
13819 | /* We're being called after following a fork. The new fork is | |
13820 | selected as current, and unless this was a vfork will have a | |
13821 | different program space from the original thread. Reset that | |
13822 | as well. */ | |
13823 | b->loc->pspace = current_program_space; | |
c906108c SS |
13824 | } |
13825 | } | |
13826 | ||
03ac34d5 MS |
13827 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13828 | If from_tty is nonzero, it prints a message to that effect, | |
13829 | which ends with a period (no newline). */ | |
13830 | ||
c906108c | 13831 | void |
fba45db2 | 13832 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13833 | { |
52f0bd74 | 13834 | struct breakpoint *b; |
c906108c SS |
13835 | |
13836 | if (count < 0) | |
13837 | count = 0; | |
13838 | ||
13839 | ALL_BREAKPOINTS (b) | |
13840 | if (b->number == bptnum) | |
c5aa993b | 13841 | { |
d77f58be SS |
13842 | if (is_tracepoint (b)) |
13843 | { | |
13844 | if (from_tty && count != 0) | |
13845 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13846 | bptnum); | |
13847 | return; | |
13848 | } | |
13849 | ||
c5aa993b | 13850 | b->ignore_count = count; |
221ea385 KS |
13851 | if (from_tty) |
13852 | { | |
13853 | if (count == 0) | |
3e43a32a MS |
13854 | printf_filtered (_("Will stop next time " |
13855 | "breakpoint %d is reached."), | |
221ea385 KS |
13856 | bptnum); |
13857 | else if (count == 1) | |
a3f17187 | 13858 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13859 | bptnum); |
13860 | else | |
3e43a32a MS |
13861 | printf_filtered (_("Will ignore next %d " |
13862 | "crossings of breakpoint %d."), | |
221ea385 KS |
13863 | count, bptnum); |
13864 | } | |
76727919 | 13865 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13866 | return; |
13867 | } | |
c906108c | 13868 | |
8a3fe4f8 | 13869 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13870 | } |
13871 | ||
c906108c SS |
13872 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13873 | ||
13874 | static void | |
0b39b52e | 13875 | ignore_command (const char *args, int from_tty) |
c906108c | 13876 | { |
0b39b52e | 13877 | const char *p = args; |
52f0bd74 | 13878 | int num; |
c906108c SS |
13879 | |
13880 | if (p == 0) | |
e2e0b3e5 | 13881 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13882 | |
c906108c | 13883 | num = get_number (&p); |
5c44784c | 13884 | if (num == 0) |
8a3fe4f8 | 13885 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13886 | if (*p == 0) |
8a3fe4f8 | 13887 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13888 | |
13889 | set_ignore_count (num, | |
13890 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13891 | from_tty); | |
221ea385 KS |
13892 | if (from_tty) |
13893 | printf_filtered ("\n"); | |
c906108c SS |
13894 | } |
13895 | \f | |
d0fe4701 XR |
13896 | |
13897 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13898 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13899 | |
13900 | static void | |
d0fe4701 XR |
13901 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13902 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13903 | { |
d0fe4701 XR |
13904 | if (bp_num_range.first == 0) |
13905 | { | |
13906 | warning (_("bad breakpoint number at or near '%d'"), | |
13907 | bp_num_range.first); | |
13908 | } | |
13909 | else | |
c906108c | 13910 | { |
d0fe4701 | 13911 | struct breakpoint *b, *tmp; |
197f0a60 | 13912 | |
d0fe4701 | 13913 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13914 | { |
d0fe4701 XR |
13915 | bool match = false; |
13916 | ||
5c44784c | 13917 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13918 | if (b->number == i) |
5c44784c | 13919 | { |
bfd28288 | 13920 | match = true; |
48649e1b | 13921 | function (b); |
11cf8741 | 13922 | break; |
5c44784c | 13923 | } |
bfd28288 | 13924 | if (!match) |
d0fe4701 | 13925 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13926 | } |
c906108c SS |
13927 | } |
13928 | } | |
13929 | ||
d0fe4701 XR |
13930 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13931 | ARGS. */ | |
13932 | ||
13933 | static void | |
13934 | map_breakpoint_numbers (const char *args, | |
13935 | gdb::function_view<void (breakpoint *)> function) | |
13936 | { | |
13937 | if (args == NULL || *args == '\0') | |
13938 | error_no_arg (_("one or more breakpoint numbers")); | |
13939 | ||
13940 | number_or_range_parser parser (args); | |
13941 | ||
13942 | while (!parser.finished ()) | |
13943 | { | |
13944 | int num = parser.get_number (); | |
13945 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13946 | } | |
13947 | } | |
13948 | ||
13949 | /* Return the breakpoint location structure corresponding to the | |
13950 | BP_NUM and LOC_NUM values. */ | |
13951 | ||
0d381245 | 13952 | static struct bp_location * |
d0fe4701 | 13953 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13954 | { |
0d381245 | 13955 | struct breakpoint *b; |
0d381245 VP |
13956 | |
13957 | ALL_BREAKPOINTS (b) | |
13958 | if (b->number == bp_num) | |
13959 | { | |
13960 | break; | |
13961 | } | |
13962 | ||
13963 | if (!b || b->number != bp_num) | |
d0fe4701 | 13964 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13965 | |
0d381245 | 13966 | if (loc_num == 0) |
d0fe4701 | 13967 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13968 | |
d0fe4701 XR |
13969 | int n = 0; |
13970 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
13971 | if (++n == loc_num) | |
13972 | return loc; | |
13973 | ||
13974 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13975 | } |
13976 | ||
95e95a6d PA |
13977 | /* Modes of operation for extract_bp_num. */ |
13978 | enum class extract_bp_kind | |
13979 | { | |
13980 | /* Extracting a breakpoint number. */ | |
13981 | bp, | |
13982 | ||
13983 | /* Extracting a location number. */ | |
13984 | loc, | |
13985 | }; | |
13986 | ||
13987 | /* Extract a breakpoint or location number (as determined by KIND) | |
13988 | from the string starting at START. TRAILER is a character which | |
13989 | can be found after the number. If you don't want a trailer, use | |
13990 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13991 | string. This always returns a positive integer. */ | |
13992 | ||
13993 | static int | |
13994 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13995 | int trailer, const char **end_out = NULL) | |
13996 | { | |
13997 | const char *end = start; | |
13998 | int num = get_number_trailer (&end, trailer); | |
13999 | if (num < 0) | |
14000 | error (kind == extract_bp_kind::bp | |
14001 | ? _("Negative breakpoint number '%.*s'") | |
14002 | : _("Negative breakpoint location number '%.*s'"), | |
14003 | int (end - start), start); | |
14004 | if (num == 0) | |
14005 | error (kind == extract_bp_kind::bp | |
14006 | ? _("Bad breakpoint number '%.*s'") | |
14007 | : _("Bad breakpoint location number '%.*s'"), | |
14008 | int (end - start), start); | |
14009 | ||
14010 | if (end_out != NULL) | |
14011 | *end_out = end; | |
14012 | return num; | |
14013 | } | |
14014 | ||
14015 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14016 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14017 | representing the (inclusive) range. The returned pair's elements | |
14018 | are always positive integers. */ | |
14019 | ||
14020 | static std::pair<int, int> | |
14021 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14022 | const std::string &arg, | |
14023 | std::string::size_type arg_offset) | |
14024 | { | |
14025 | std::pair<int, int> range; | |
14026 | const char *bp_loc = &arg[arg_offset]; | |
14027 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14028 | if (dash != std::string::npos) | |
14029 | { | |
14030 | /* bp_loc is a range (x-z). */ | |
14031 | if (arg.length () == dash + 1) | |
14032 | error (kind == extract_bp_kind::bp | |
14033 | ? _("Bad breakpoint number at or near: '%s'") | |
14034 | : _("Bad breakpoint location number at or near: '%s'"), | |
14035 | bp_loc); | |
14036 | ||
14037 | const char *end; | |
14038 | const char *start_first = bp_loc; | |
14039 | const char *start_second = &arg[dash + 1]; | |
14040 | range.first = extract_bp_num (kind, start_first, '-'); | |
14041 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14042 | ||
14043 | if (range.first > range.second) | |
14044 | error (kind == extract_bp_kind::bp | |
14045 | ? _("Inverted breakpoint range at '%.*s'") | |
14046 | : _("Inverted breakpoint location range at '%.*s'"), | |
14047 | int (end - start_first), start_first); | |
14048 | } | |
14049 | else | |
14050 | { | |
14051 | /* bp_loc is a single value. */ | |
14052 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14053 | range.second = range.first; | |
14054 | } | |
14055 | return range; | |
14056 | } | |
14057 | ||
d0fe4701 XR |
14058 | /* Extract the breakpoint/location range specified by ARG. Returns |
14059 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14060 | BP_LOC_RANGE. | |
14061 | ||
14062 | ARG may be in any of the following forms: | |
14063 | ||
14064 | x where 'x' is a breakpoint number. | |
14065 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14066 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14067 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14068 | location number range. | |
14069 | */ | |
14070 | ||
cc638e86 | 14071 | static void |
d0fe4701 XR |
14072 | extract_bp_number_and_location (const std::string &arg, |
14073 | std::pair<int, int> &bp_num_range, | |
14074 | std::pair<int, int> &bp_loc_range) | |
14075 | { | |
14076 | std::string::size_type dot = arg.find ('.'); | |
14077 | ||
14078 | if (dot != std::string::npos) | |
14079 | { | |
14080 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14081 | ||
14082 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14083 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14084 | |
95e95a6d PA |
14085 | bp_num_range.first |
14086 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14087 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14088 | |
95e95a6d PA |
14089 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14090 | arg, dot + 1); | |
d0fe4701 XR |
14091 | } |
14092 | else | |
14093 | { | |
14094 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14095 | |
95e95a6d | 14096 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14097 | bp_loc_range.first = 0; |
14098 | bp_loc_range.second = 0; | |
14099 | } | |
d0fe4701 XR |
14100 | } |
14101 | ||
14102 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14103 | specifies whether to enable or disable. */ | |
14104 | ||
14105 | static void | |
14106 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14107 | { | |
14108 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14109 | if (loc != NULL) | |
14110 | { | |
14111 | if (loc->enabled != enable) | |
14112 | { | |
14113 | loc->enabled = enable; | |
14114 | mark_breakpoint_location_modified (loc); | |
14115 | } | |
14116 | if (target_supports_enable_disable_tracepoint () | |
14117 | && current_trace_status ()->running && loc->owner | |
14118 | && is_tracepoint (loc->owner)) | |
14119 | target_disable_tracepoint (loc); | |
14120 | } | |
14121 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14122 | |
14123 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14124 | } |
14125 | ||
14126 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14127 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14128 | (inclusive) range of location numbers of that breakpoint to | |
14129 | enable/disable. ENABLE specifies whether to enable or disable the | |
14130 | location. */ | |
14131 | ||
14132 | static void | |
14133 | enable_disable_breakpoint_location_range (int bp_num, | |
14134 | std::pair<int, int> &bp_loc_range, | |
14135 | bool enable) | |
14136 | { | |
14137 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14138 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14139 | } | |
0d381245 | 14140 | |
1900040c MS |
14141 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14142 | If from_tty is nonzero, it prints a message to that effect, | |
14143 | which ends with a period (no newline). */ | |
14144 | ||
c906108c | 14145 | void |
fba45db2 | 14146 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14147 | { |
14148 | /* Never disable a watchpoint scope breakpoint; we want to | |
14149 | hit them when we leave scope so we can delete both the | |
14150 | watchpoint and its scope breakpoint at that time. */ | |
14151 | if (bpt->type == bp_watchpoint_scope) | |
14152 | return; | |
14153 | ||
b5de0fa7 | 14154 | bpt->enable_state = bp_disabled; |
c906108c | 14155 | |
b775012e LM |
14156 | /* Mark breakpoint locations modified. */ |
14157 | mark_breakpoint_modified (bpt); | |
14158 | ||
d248b706 KY |
14159 | if (target_supports_enable_disable_tracepoint () |
14160 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14161 | { | |
14162 | struct bp_location *location; | |
14163 | ||
14164 | for (location = bpt->loc; location; location = location->next) | |
14165 | target_disable_tracepoint (location); | |
14166 | } | |
14167 | ||
44702360 | 14168 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14169 | |
76727919 | 14170 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14171 | } |
14172 | ||
d0fe4701 XR |
14173 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14174 | specified in ARGS. ARGS may be in any of the formats handled by | |
14175 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14176 | or disable the breakpoints/locations. */ | |
14177 | ||
c906108c | 14178 | static void |
d0fe4701 | 14179 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14180 | { |
c906108c | 14181 | if (args == 0) |
46c6471b PA |
14182 | { |
14183 | struct breakpoint *bpt; | |
14184 | ||
14185 | ALL_BREAKPOINTS (bpt) | |
14186 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14187 | { |
14188 | if (enable) | |
14189 | enable_breakpoint (bpt); | |
14190 | else | |
14191 | disable_breakpoint (bpt); | |
14192 | } | |
46c6471b | 14193 | } |
9eaabc75 | 14194 | else |
0d381245 | 14195 | { |
cb791d59 | 14196 | std::string num = extract_arg (&args); |
9eaabc75 | 14197 | |
cb791d59 | 14198 | while (!num.empty ()) |
d248b706 | 14199 | { |
d0fe4701 | 14200 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14201 | |
cc638e86 PA |
14202 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14203 | ||
14204 | if (bp_loc_range.first == bp_loc_range.second | |
14205 | && bp_loc_range.first == 0) | |
d0fe4701 | 14206 | { |
cc638e86 PA |
14207 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14208 | map_breakpoint_number_range (bp_num_range, | |
14209 | enable | |
14210 | ? enable_breakpoint | |
14211 | : disable_breakpoint); | |
14212 | } | |
14213 | else | |
14214 | { | |
14215 | /* Handle breakpoint ids with formats 'x.y' or | |
14216 | 'x.y-z'. */ | |
14217 | enable_disable_breakpoint_location_range | |
14218 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14219 | } |
9eaabc75 | 14220 | num = extract_arg (&args); |
d248b706 | 14221 | } |
0d381245 | 14222 | } |
c906108c SS |
14223 | } |
14224 | ||
d0fe4701 XR |
14225 | /* The disable command disables the specified breakpoints/locations |
14226 | (or all defined breakpoints) so they're no longer effective in | |
14227 | stopping the inferior. ARGS may be in any of the forms defined in | |
14228 | extract_bp_number_and_location. */ | |
14229 | ||
14230 | static void | |
14231 | disable_command (const char *args, int from_tty) | |
14232 | { | |
14233 | enable_disable_command (args, from_tty, false); | |
14234 | } | |
14235 | ||
c906108c | 14236 | static void |
816338b5 SS |
14237 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14238 | int count) | |
c906108c | 14239 | { |
afe38095 | 14240 | int target_resources_ok; |
c906108c SS |
14241 | |
14242 | if (bpt->type == bp_hardware_breakpoint) | |
14243 | { | |
14244 | int i; | |
c5aa993b | 14245 | i = hw_breakpoint_used_count (); |
53a5351d | 14246 | target_resources_ok = |
d92524f1 | 14247 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14248 | i + 1, 0); |
c906108c | 14249 | if (target_resources_ok == 0) |
8a3fe4f8 | 14250 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14251 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14252 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14253 | } |
14254 | ||
cc60f2e3 | 14255 | if (is_watchpoint (bpt)) |
c906108c | 14256 | { |
d07205c2 | 14257 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14258 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14259 | |
a70b8144 | 14260 | try |
c906108c | 14261 | { |
3a5c3e22 PA |
14262 | struct watchpoint *w = (struct watchpoint *) bpt; |
14263 | ||
1e718ff1 TJB |
14264 | orig_enable_state = bpt->enable_state; |
14265 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14266 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14267 | } |
230d2906 | 14268 | catch (const gdb_exception &e) |
c5aa993b | 14269 | { |
1e718ff1 | 14270 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14271 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14272 | bpt->number); | |
14273 | return; | |
c5aa993b | 14274 | } |
c906108c | 14275 | } |
0101ce28 | 14276 | |
b775012e LM |
14277 | bpt->enable_state = bp_enabled; |
14278 | ||
14279 | /* Mark breakpoint locations modified. */ | |
14280 | mark_breakpoint_modified (bpt); | |
14281 | ||
d248b706 KY |
14282 | if (target_supports_enable_disable_tracepoint () |
14283 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14284 | { | |
14285 | struct bp_location *location; | |
14286 | ||
14287 | for (location = bpt->loc; location; location = location->next) | |
14288 | target_enable_tracepoint (location); | |
14289 | } | |
14290 | ||
b4c291bb | 14291 | bpt->disposition = disposition; |
816338b5 | 14292 | bpt->enable_count = count; |
44702360 | 14293 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14294 | |
76727919 | 14295 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14296 | } |
14297 | ||
fe3f5fa8 | 14298 | |
c906108c | 14299 | void |
fba45db2 | 14300 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14301 | { |
816338b5 | 14302 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14303 | } |
14304 | ||
d0fe4701 XR |
14305 | /* The enable command enables the specified breakpoints/locations (or |
14306 | all defined breakpoints) so they once again become (or continue to | |
14307 | be) effective in stopping the inferior. ARGS may be in any of the | |
14308 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14309 | |
c906108c | 14310 | static void |
981a3fb3 | 14311 | enable_command (const char *args, int from_tty) |
c906108c | 14312 | { |
d0fe4701 | 14313 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14314 | } |
14315 | ||
c906108c | 14316 | static void |
4495129a | 14317 | enable_once_command (const char *args, int from_tty) |
c906108c | 14318 | { |
48649e1b TT |
14319 | map_breakpoint_numbers |
14320 | (args, [&] (breakpoint *b) | |
14321 | { | |
14322 | iterate_over_related_breakpoints | |
14323 | (b, [&] (breakpoint *bpt) | |
14324 | { | |
14325 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14326 | }); | |
14327 | }); | |
816338b5 SS |
14328 | } |
14329 | ||
14330 | static void | |
4495129a | 14331 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14332 | { |
b9d61307 SM |
14333 | int count; |
14334 | ||
14335 | if (args == NULL) | |
14336 | error_no_arg (_("hit count")); | |
14337 | ||
14338 | count = get_number (&args); | |
816338b5 | 14339 | |
48649e1b TT |
14340 | map_breakpoint_numbers |
14341 | (args, [&] (breakpoint *b) | |
14342 | { | |
14343 | iterate_over_related_breakpoints | |
14344 | (b, [&] (breakpoint *bpt) | |
14345 | { | |
14346 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14347 | }); | |
14348 | }); | |
c906108c SS |
14349 | } |
14350 | ||
c906108c | 14351 | static void |
4495129a | 14352 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14353 | { |
48649e1b TT |
14354 | map_breakpoint_numbers |
14355 | (args, [&] (breakpoint *b) | |
14356 | { | |
14357 | iterate_over_related_breakpoints | |
14358 | (b, [&] (breakpoint *bpt) | |
14359 | { | |
14360 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14361 | }); | |
14362 | }); | |
c906108c SS |
14363 | } |
14364 | \f | |
fa8d40ab | 14365 | static void |
981a3fb3 | 14366 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14367 | { |
14368 | } | |
14369 | ||
14370 | static void | |
981a3fb3 | 14371 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14372 | { |
14373 | } | |
14374 | ||
1f3b5d1b PP |
14375 | /* Invalidate last known value of any hardware watchpoint if |
14376 | the memory which that value represents has been written to by | |
14377 | GDB itself. */ | |
14378 | ||
14379 | static void | |
8de0566d YQ |
14380 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14381 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14382 | const bfd_byte *data) |
14383 | { | |
14384 | struct breakpoint *bp; | |
14385 | ||
14386 | ALL_BREAKPOINTS (bp) | |
14387 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14388 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14389 | { |
3a5c3e22 | 14390 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14391 | |
850645cf | 14392 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14393 | { |
14394 | struct bp_location *loc; | |
14395 | ||
14396 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14397 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14398 | && loc->address + loc->length > addr | |
14399 | && addr + len > loc->address) | |
14400 | { | |
3a5c3e22 PA |
14401 | wp->val = NULL; |
14402 | wp->val_valid = 0; | |
14403 | } | |
14404 | } | |
1f3b5d1b PP |
14405 | } |
14406 | } | |
14407 | ||
8181d85f DJ |
14408 | /* Create and insert a breakpoint for software single step. */ |
14409 | ||
14410 | void | |
6c95b8df | 14411 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14412 | const address_space *aspace, |
4a64f543 | 14413 | CORE_ADDR next_pc) |
8181d85f | 14414 | { |
7c16b83e PA |
14415 | struct thread_info *tp = inferior_thread (); |
14416 | struct symtab_and_line sal; | |
14417 | CORE_ADDR pc = next_pc; | |
8181d85f | 14418 | |
34b7e8a6 PA |
14419 | if (tp->control.single_step_breakpoints == NULL) |
14420 | { | |
14421 | tp->control.single_step_breakpoints | |
5d5658a1 | 14422 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14423 | } |
8181d85f | 14424 | |
7c16b83e PA |
14425 | sal = find_pc_line (pc, 0); |
14426 | sal.pc = pc; | |
14427 | sal.section = find_pc_overlay (pc); | |
14428 | sal.explicit_pc = 1; | |
34b7e8a6 | 14429 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14430 | |
7c16b83e | 14431 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14432 | } |
14433 | ||
93f9a11f YQ |
14434 | /* Insert single step breakpoints according to the current state. */ |
14435 | ||
14436 | int | |
14437 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14438 | { | |
f5ea389a | 14439 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14440 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14441 | |
f5ea389a | 14442 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14443 | |
a0ff9e1a | 14444 | if (!next_pcs.empty ()) |
93f9a11f | 14445 | { |
f5ea389a | 14446 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14447 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14448 | |
a0ff9e1a | 14449 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14450 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14451 | ||
93f9a11f YQ |
14452 | return 1; |
14453 | } | |
14454 | else | |
14455 | return 0; | |
14456 | } | |
14457 | ||
34b7e8a6 | 14458 | /* See breakpoint.h. */ |
f02253f1 HZ |
14459 | |
14460 | int | |
7c16b83e | 14461 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14462 | const address_space *aspace, |
7c16b83e | 14463 | CORE_ADDR pc) |
1aafd4da | 14464 | { |
7c16b83e | 14465 | struct bp_location *loc; |
1aafd4da | 14466 | |
7c16b83e PA |
14467 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14468 | if (loc->inserted | |
14469 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14470 | return 1; | |
1aafd4da | 14471 | |
7c16b83e | 14472 | return 0; |
ef370185 JB |
14473 | } |
14474 | ||
14475 | /* Check whether a software single-step breakpoint is inserted at | |
14476 | PC. */ | |
14477 | ||
14478 | int | |
accd0bcd | 14479 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14480 | CORE_ADDR pc) |
14481 | { | |
34b7e8a6 PA |
14482 | struct breakpoint *bpt; |
14483 | ||
14484 | ALL_BREAKPOINTS (bpt) | |
14485 | { | |
14486 | if (bpt->type == bp_single_step | |
14487 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14488 | return 1; | |
14489 | } | |
14490 | return 0; | |
1aafd4da UW |
14491 | } |
14492 | ||
1042e4c0 SS |
14493 | /* Tracepoint-specific operations. */ |
14494 | ||
14495 | /* Set tracepoint count to NUM. */ | |
14496 | static void | |
14497 | set_tracepoint_count (int num) | |
14498 | { | |
14499 | tracepoint_count = num; | |
4fa62494 | 14500 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14501 | } |
14502 | ||
70221824 | 14503 | static void |
0b39b52e | 14504 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14505 | { |
55aa24fb | 14506 | struct breakpoint_ops *ops; |
55aa24fb | 14507 | |
ffc2605c TT |
14508 | event_location_up location = string_to_event_location (&arg, |
14509 | current_language); | |
5b56227b | 14510 | if (location != NULL |
ffc2605c | 14511 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14512 | ops = &tracepoint_probe_breakpoint_ops; |
14513 | else | |
14514 | ops = &tracepoint_breakpoint_ops; | |
14515 | ||
558a9d82 | 14516 | create_breakpoint (get_current_arch (), |
ffc2605c | 14517 | location.get (), |
f00aae0f | 14518 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14519 | 0 /* tempflag */, |
14520 | bp_tracepoint /* type_wanted */, | |
14521 | 0 /* Ignore count */, | |
14522 | pending_break_support, | |
14523 | ops, | |
14524 | from_tty, | |
14525 | 1 /* enabled */, | |
14526 | 0 /* internal */, 0); | |
1042e4c0 SS |
14527 | } |
14528 | ||
70221824 | 14529 | static void |
0b39b52e | 14530 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14531 | { |
ffc2605c TT |
14532 | event_location_up location = string_to_event_location (&arg, |
14533 | current_language); | |
558a9d82 | 14534 | create_breakpoint (get_current_arch (), |
ffc2605c | 14535 | location.get (), |
f00aae0f | 14536 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14537 | 0 /* tempflag */, |
14538 | bp_fast_tracepoint /* type_wanted */, | |
14539 | 0 /* Ignore count */, | |
14540 | pending_break_support, | |
14541 | &tracepoint_breakpoint_ops, | |
14542 | from_tty, | |
14543 | 1 /* enabled */, | |
14544 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14545 | } |
14546 | ||
14547 | /* strace command implementation. Creates a static tracepoint. */ | |
14548 | ||
70221824 | 14549 | static void |
0b39b52e | 14550 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14551 | { |
983af33b | 14552 | struct breakpoint_ops *ops; |
ffc2605c | 14553 | event_location_up location; |
983af33b SDJ |
14554 | |
14555 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14556 | or with a normal static tracepoint. */ | |
61012eef | 14557 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14558 | { |
14559 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14560 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14561 | } |
983af33b | 14562 | else |
f00aae0f KS |
14563 | { |
14564 | ops = &tracepoint_breakpoint_ops; | |
14565 | location = string_to_event_location (&arg, current_language); | |
14566 | } | |
983af33b | 14567 | |
558a9d82 | 14568 | create_breakpoint (get_current_arch (), |
ffc2605c | 14569 | location.get (), |
f00aae0f | 14570 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14571 | 0 /* tempflag */, |
14572 | bp_static_tracepoint /* type_wanted */, | |
14573 | 0 /* Ignore count */, | |
14574 | pending_break_support, | |
14575 | ops, | |
14576 | from_tty, | |
14577 | 1 /* enabled */, | |
14578 | 0 /* internal */, 0); | |
7a697b8d SS |
14579 | } |
14580 | ||
409873ef SS |
14581 | /* Set up a fake reader function that gets command lines from a linked |
14582 | list that was acquired during tracepoint uploading. */ | |
14583 | ||
14584 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14585 | static int next_cmd; |
409873ef SS |
14586 | |
14587 | static char * | |
14588 | read_uploaded_action (void) | |
14589 | { | |
a18ba4e4 | 14590 | char *rslt = nullptr; |
409873ef | 14591 | |
a18ba4e4 SM |
14592 | if (next_cmd < this_utp->cmd_strings.size ()) |
14593 | { | |
67aa1f3c | 14594 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14595 | next_cmd++; |
14596 | } | |
409873ef SS |
14597 | |
14598 | return rslt; | |
14599 | } | |
14600 | ||
00bf0b85 SS |
14601 | /* Given information about a tracepoint as recorded on a target (which |
14602 | can be either a live system or a trace file), attempt to create an | |
14603 | equivalent GDB tracepoint. This is not a reliable process, since | |
14604 | the target does not necessarily have all the information used when | |
14605 | the tracepoint was originally defined. */ | |
14606 | ||
d9b3f62e | 14607 | struct tracepoint * |
00bf0b85 | 14608 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14609 | { |
f2fc3015 TT |
14610 | const char *addr_str; |
14611 | char small_buf[100]; | |
d9b3f62e | 14612 | struct tracepoint *tp; |
fd9b8c24 | 14613 | |
409873ef | 14614 | if (utp->at_string) |
67aa1f3c | 14615 | addr_str = utp->at_string.get (); |
409873ef SS |
14616 | else |
14617 | { | |
14618 | /* In the absence of a source location, fall back to raw | |
14619 | address. Since there is no way to confirm that the address | |
14620 | means the same thing as when the trace was started, warn the | |
14621 | user. */ | |
3e43a32a MS |
14622 | warning (_("Uploaded tracepoint %d has no " |
14623 | "source location, using raw address"), | |
409873ef | 14624 | utp->number); |
8c042590 | 14625 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14626 | addr_str = small_buf; |
14627 | } | |
14628 | ||
14629 | /* There's not much we can do with a sequence of bytecodes. */ | |
14630 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14631 | warning (_("Uploaded tracepoint %d condition " |
14632 | "has no source form, ignoring it"), | |
409873ef | 14633 | utp->number); |
d5551862 | 14634 | |
ffc2605c TT |
14635 | event_location_up location = string_to_event_location (&addr_str, |
14636 | current_language); | |
8cdf0e15 | 14637 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14638 | location.get (), |
67aa1f3c | 14639 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14640 | 0 /* parse cond/thread */, |
8cdf0e15 | 14641 | 0 /* tempflag */, |
0fb4aa4b | 14642 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14643 | 0 /* Ignore count */, |
14644 | pending_break_support, | |
348d480f | 14645 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14646 | 0 /* from_tty */, |
84f4c1fe | 14647 | utp->enabled /* enabled */, |
44f238bb PA |
14648 | 0 /* internal */, |
14649 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14650 | return NULL; |
fd9b8c24 | 14651 | |
409873ef | 14652 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14653 | tp = get_tracepoint (tracepoint_count); |
14654 | gdb_assert (tp != NULL); | |
d5551862 | 14655 | |
00bf0b85 SS |
14656 | if (utp->pass > 0) |
14657 | { | |
8c042590 | 14658 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14659 | tp->number); |
00bf0b85 | 14660 | |
409873ef | 14661 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14662 | } |
14663 | ||
409873ef SS |
14664 | /* If we have uploaded versions of the original commands, set up a |
14665 | special-purpose "reader" function and call the usual command line | |
14666 | reader, then pass the result to the breakpoint command-setting | |
14667 | function. */ | |
a18ba4e4 | 14668 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14669 | { |
12973681 | 14670 | counted_command_line cmd_list; |
00bf0b85 | 14671 | |
409873ef | 14672 | this_utp = utp; |
3149d8c1 | 14673 | next_cmd = 0; |
d5551862 | 14674 | |
60b3cef2 | 14675 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14676 | |
c1fc2657 | 14677 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14678 | } |
a18ba4e4 SM |
14679 | else if (!utp->actions.empty () |
14680 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14681 | warning (_("Uploaded tracepoint %d actions " |
14682 | "have no source form, ignoring them"), | |
409873ef | 14683 | utp->number); |
00bf0b85 | 14684 | |
f196051f | 14685 | /* Copy any status information that might be available. */ |
c1fc2657 | 14686 | tp->hit_count = utp->hit_count; |
f196051f SS |
14687 | tp->traceframe_usage = utp->traceframe_usage; |
14688 | ||
00bf0b85 | 14689 | return tp; |
d9b3f62e | 14690 | } |
00bf0b85 | 14691 | |
1042e4c0 SS |
14692 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14693 | omitted. */ | |
14694 | ||
14695 | static void | |
1d12d88f | 14696 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14697 | { |
79a45e25 | 14698 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14699 | int num_printed; |
1042e4c0 | 14700 | |
e5a67952 | 14701 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14702 | |
14703 | if (num_printed == 0) | |
1042e4c0 | 14704 | { |
e5a67952 | 14705 | if (args == NULL || *args == '\0') |
112e8700 | 14706 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14707 | else |
112e8700 | 14708 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14709 | } |
ad443146 SS |
14710 | |
14711 | default_collect_info (); | |
1042e4c0 SS |
14712 | } |
14713 | ||
4a64f543 | 14714 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14715 | Not supported by all targets. */ |
14716 | static void | |
5fed81ff | 14717 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14718 | { |
14719 | enable_command (args, from_tty); | |
14720 | } | |
14721 | ||
4a64f543 | 14722 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14723 | Not supported by all targets. */ |
14724 | static void | |
5fed81ff | 14725 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14726 | { |
14727 | disable_command (args, from_tty); | |
14728 | } | |
14729 | ||
4a64f543 | 14730 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14731 | static void |
4495129a | 14732 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14733 | { |
35df4500 | 14734 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14735 | |
14736 | dont_repeat (); | |
14737 | ||
14738 | if (arg == 0) | |
14739 | { | |
14740 | int breaks_to_delete = 0; | |
14741 | ||
14742 | /* Delete all breakpoints if no argument. | |
14743 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14744 | have to be deleted with an explicit breakpoint number |
14745 | argument. */ | |
1042e4c0 | 14746 | ALL_TRACEPOINTS (b) |
46c6471b | 14747 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14748 | { |
14749 | breaks_to_delete = 1; | |
14750 | break; | |
14751 | } | |
1042e4c0 SS |
14752 | |
14753 | /* Ask user only if there are some breakpoints to delete. */ | |
14754 | if (!from_tty | |
14755 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14756 | { | |
35df4500 | 14757 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14758 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14759 | delete_breakpoint (b); |
1042e4c0 SS |
14760 | } |
14761 | } | |
14762 | else | |
48649e1b | 14763 | map_breakpoint_numbers |
b926417a | 14764 | (arg, [&] (breakpoint *br) |
48649e1b | 14765 | { |
b926417a | 14766 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14767 | }); |
1042e4c0 SS |
14768 | } |
14769 | ||
197f0a60 TT |
14770 | /* Helper function for trace_pass_command. */ |
14771 | ||
14772 | static void | |
d9b3f62e | 14773 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14774 | { |
d9b3f62e | 14775 | tp->pass_count = count; |
76727919 | 14776 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14777 | if (from_tty) |
14778 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14779 | tp->number, count); |
197f0a60 TT |
14780 | } |
14781 | ||
1042e4c0 SS |
14782 | /* Set passcount for tracepoint. |
14783 | ||
14784 | First command argument is passcount, second is tracepoint number. | |
14785 | If tracepoint number omitted, apply to most recently defined. | |
14786 | Also accepts special argument "all". */ | |
14787 | ||
14788 | static void | |
0b39b52e | 14789 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14790 | { |
d9b3f62e | 14791 | struct tracepoint *t1; |
0b39b52e | 14792 | ULONGEST count; |
1042e4c0 SS |
14793 | |
14794 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14795 | error (_("passcount command requires an " |
14796 | "argument (count + optional TP num)")); | |
1042e4c0 | 14797 | |
0b39b52e | 14798 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14799 | |
529480d0 | 14800 | args = skip_spaces (args); |
1042e4c0 SS |
14801 | if (*args && strncasecmp (args, "all", 3) == 0) |
14802 | { | |
d9b3f62e PA |
14803 | struct breakpoint *b; |
14804 | ||
1042e4c0 | 14805 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14806 | if (*args) |
14807 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14808 | |
d9b3f62e | 14809 | ALL_TRACEPOINTS (b) |
197f0a60 | 14810 | { |
d9b3f62e | 14811 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14812 | trace_pass_set_count (t1, count, from_tty); |
14813 | } | |
14814 | } | |
14815 | else if (*args == '\0') | |
1042e4c0 | 14816 | { |
5fa1d40e | 14817 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14818 | if (t1) |
197f0a60 TT |
14819 | trace_pass_set_count (t1, count, from_tty); |
14820 | } | |
14821 | else | |
14822 | { | |
bfd28288 PA |
14823 | number_or_range_parser parser (args); |
14824 | while (!parser.finished ()) | |
1042e4c0 | 14825 | { |
bfd28288 | 14826 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14827 | if (t1) |
14828 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14829 | } |
14830 | } | |
1042e4c0 SS |
14831 | } |
14832 | ||
d9b3f62e | 14833 | struct tracepoint * |
1042e4c0 SS |
14834 | get_tracepoint (int num) |
14835 | { | |
14836 | struct breakpoint *t; | |
14837 | ||
14838 | ALL_TRACEPOINTS (t) | |
14839 | if (t->number == num) | |
d9b3f62e | 14840 | return (struct tracepoint *) t; |
1042e4c0 SS |
14841 | |
14842 | return NULL; | |
14843 | } | |
14844 | ||
d5551862 SS |
14845 | /* Find the tracepoint with the given target-side number (which may be |
14846 | different from the tracepoint number after disconnecting and | |
14847 | reconnecting). */ | |
14848 | ||
d9b3f62e | 14849 | struct tracepoint * |
d5551862 SS |
14850 | get_tracepoint_by_number_on_target (int num) |
14851 | { | |
d9b3f62e | 14852 | struct breakpoint *b; |
d5551862 | 14853 | |
d9b3f62e PA |
14854 | ALL_TRACEPOINTS (b) |
14855 | { | |
14856 | struct tracepoint *t = (struct tracepoint *) b; | |
14857 | ||
14858 | if (t->number_on_target == num) | |
14859 | return t; | |
14860 | } | |
d5551862 SS |
14861 | |
14862 | return NULL; | |
14863 | } | |
14864 | ||
1042e4c0 | 14865 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14866 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14867 | If the argument is missing, the most recent tracepoint |
14868 | (tracepoint_count) is returned. */ | |
14869 | ||
d9b3f62e | 14870 | struct tracepoint * |
0b39b52e | 14871 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14872 | number_or_range_parser *parser) |
1042e4c0 | 14873 | { |
1042e4c0 SS |
14874 | struct breakpoint *t; |
14875 | int tpnum; | |
0b39b52e | 14876 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14877 | |
bfd28288 | 14878 | if (parser != NULL) |
197f0a60 | 14879 | { |
bfd28288 PA |
14880 | gdb_assert (!parser->finished ()); |
14881 | tpnum = parser->get_number (); | |
197f0a60 TT |
14882 | } |
14883 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14884 | tpnum = tracepoint_count; |
1042e4c0 | 14885 | else |
197f0a60 | 14886 | tpnum = get_number (arg); |
1042e4c0 SS |
14887 | |
14888 | if (tpnum <= 0) | |
14889 | { | |
14890 | if (instring && *instring) | |
14891 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14892 | instring); | |
14893 | else | |
5fa1d40e | 14894 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14895 | return NULL; |
14896 | } | |
14897 | ||
14898 | ALL_TRACEPOINTS (t) | |
14899 | if (t->number == tpnum) | |
14900 | { | |
d9b3f62e | 14901 | return (struct tracepoint *) t; |
1042e4c0 SS |
14902 | } |
14903 | ||
1042e4c0 SS |
14904 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14905 | return NULL; | |
14906 | } | |
14907 | ||
d9b3f62e PA |
14908 | void |
14909 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14910 | { | |
14911 | if (b->thread != -1) | |
14912 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14913 | ||
14914 | if (b->task != 0) | |
14915 | fprintf_unfiltered (fp, " task %d", b->task); | |
14916 | ||
14917 | fprintf_unfiltered (fp, "\n"); | |
14918 | } | |
14919 | ||
6149aea9 PA |
14920 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14921 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14922 | on each breakpoint and only include the ones for which it returns | |
14923 | non-zero. */ | |
14924 | ||
1042e4c0 | 14925 | static void |
4495129a | 14926 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 14927 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14928 | { |
14929 | struct breakpoint *tp; | |
6149aea9 | 14930 | int any = 0; |
6149aea9 | 14931 | int extra_trace_bits = 0; |
1042e4c0 | 14932 | |
6149aea9 PA |
14933 | if (filename == 0 || *filename == 0) |
14934 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14935 | |
14936 | /* See if we have anything to save. */ | |
6149aea9 | 14937 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14938 | { |
6149aea9 | 14939 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14940 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14941 | continue; |
14942 | ||
14943 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14944 | if (filter && !filter (tp)) | |
14945 | continue; | |
14946 | ||
14947 | any = 1; | |
14948 | ||
14949 | if (is_tracepoint (tp)) | |
14950 | { | |
14951 | extra_trace_bits = 1; | |
14952 | ||
14953 | /* We can stop searching. */ | |
14954 | break; | |
14955 | } | |
1042e4c0 | 14956 | } |
6149aea9 PA |
14957 | |
14958 | if (!any) | |
1042e4c0 | 14959 | { |
6149aea9 | 14960 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14961 | return; |
14962 | } | |
14963 | ||
ee0c3293 | 14964 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14965 | |
14966 | stdio_file fp; | |
14967 | ||
ee0c3293 | 14968 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14969 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14970 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14971 | |
6149aea9 | 14972 | if (extra_trace_bits) |
d7e74731 | 14973 | save_trace_state_variables (&fp); |
8bf6485c | 14974 | |
6149aea9 | 14975 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14976 | { |
6149aea9 | 14977 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14978 | if (!user_breakpoint_p (tp)) |
6149aea9 | 14979 | continue; |
8bf6485c | 14980 | |
6149aea9 PA |
14981 | /* If we have a filter, only save the breakpoints it accepts. */ |
14982 | if (filter && !filter (tp)) | |
14983 | continue; | |
14984 | ||
d7e74731 | 14985 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 14986 | |
6149aea9 PA |
14987 | /* Note, we can't rely on tp->number for anything, as we can't |
14988 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14989 | instead. */ | |
14990 | ||
14991 | if (tp->cond_string) | |
d7e74731 | 14992 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
14993 | |
14994 | if (tp->ignore_count) | |
d7e74731 | 14995 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 14996 | |
2d9442cc | 14997 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 14998 | { |
d7e74731 | 14999 | fp.puts (" commands\n"); |
a7bdde9e | 15000 | |
d7e74731 | 15001 | current_uiout->redirect (&fp); |
a70b8144 | 15002 | try |
1042e4c0 | 15003 | { |
d1b0a7bf | 15004 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15005 | } |
230d2906 | 15006 | catch (const gdb_exception &ex) |
492d29ea | 15007 | { |
112e8700 | 15008 | current_uiout->redirect (NULL); |
eedc3f4f | 15009 | throw; |
492d29ea | 15010 | } |
1042e4c0 | 15011 | |
112e8700 | 15012 | current_uiout->redirect (NULL); |
d7e74731 | 15013 | fp.puts (" end\n"); |
1042e4c0 | 15014 | } |
6149aea9 PA |
15015 | |
15016 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15017 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15018 | |
15019 | /* If this is a multi-location breakpoint, check if the locations | |
15020 | should be individually disabled. Watchpoint locations are | |
15021 | special, and not user visible. */ | |
15022 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15023 | { | |
15024 | struct bp_location *loc; | |
15025 | int n = 1; | |
15026 | ||
15027 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15028 | if (!loc->enabled) | |
d7e74731 | 15029 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15030 | } |
1042e4c0 | 15031 | } |
8bf6485c | 15032 | |
6149aea9 | 15033 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15034 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15035 | |
1042e4c0 | 15036 | if (from_tty) |
ee0c3293 | 15037 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15038 | } |
15039 | ||
15040 | /* The `save breakpoints' command. */ | |
15041 | ||
15042 | static void | |
4495129a | 15043 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15044 | { |
15045 | save_breakpoints (args, from_tty, NULL); | |
15046 | } | |
15047 | ||
15048 | /* The `save tracepoints' command. */ | |
15049 | ||
15050 | static void | |
4495129a | 15051 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15052 | { |
15053 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15054 | } |
15055 | ||
15056 | /* Create a vector of all tracepoints. */ | |
15057 | ||
f51e0e20 | 15058 | std::vector<breakpoint *> |
eeae04df | 15059 | all_tracepoints (void) |
1042e4c0 | 15060 | { |
f51e0e20 | 15061 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15062 | struct breakpoint *tp; |
15063 | ||
15064 | ALL_TRACEPOINTS (tp) | |
15065 | { | |
f51e0e20 | 15066 | tp_vec.push_back (tp); |
1042e4c0 SS |
15067 | } |
15068 | ||
15069 | return tp_vec; | |
15070 | } | |
15071 | ||
c906108c | 15072 | \f |
629500fa KS |
15073 | /* This help string is used to consolidate all the help string for specifying |
15074 | locations used by several commands. */ | |
15075 | ||
15076 | #define LOCATION_HELP_STRING \ | |
15077 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15078 | source filename, function name, label name, and line number.\n\ | |
15079 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15080 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15081 | \"factorial.c:fact:the_top\".\n\ | |
15082 | \n\ | |
15083 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15084 | program. Example: To specify the fourth byte past the start function\n\ | |
15085 | \"main\", use \"*main + 4\".\n\ | |
15086 | \n\ | |
15087 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15088 | syntax to specify location parameters.\n\ | |
15089 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15090 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15091 | -function fact -label the_top\".\n\ |
15092 | \n\ | |
15093 | By default, a specified function is matched against the program's\n\ | |
15094 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15095 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15096 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15097 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15098 | specified name as a complete fully-qualified name instead." |
629500fa | 15099 | |
4a64f543 MS |
15100 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15101 | commands. It is defined as a macro to prevent duplication. | |
15102 | COMMAND should be a string constant containing the name of the | |
15103 | command. */ | |
629500fa | 15104 | |
31e2b00f | 15105 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15106 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15107 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15108 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15109 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15110 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15111 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15112 | below.\n\ | |
15113 | \n\ | |
dc10affe PA |
15114 | With no LOCATION, uses current execution address of the selected\n\ |
15115 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15116 | \n\ |
15117 | THREADNUM is the number from \"info threads\".\n\ | |
15118 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15119 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15120 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15121 | conditions are different.\n\ | |
31e2b00f AS |
15122 | \n\ |
15123 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15124 | ||
44feb3ce TT |
15125 | /* List of subcommands for "catch". */ |
15126 | static struct cmd_list_element *catch_cmdlist; | |
15127 | ||
15128 | /* List of subcommands for "tcatch". */ | |
15129 | static struct cmd_list_element *tcatch_cmdlist; | |
15130 | ||
9ac4176b | 15131 | void |
a121b7c1 | 15132 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15133 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15134 | completer_ftype *completer, |
44feb3ce TT |
15135 | void *user_data_catch, |
15136 | void *user_data_tcatch) | |
15137 | { | |
15138 | struct cmd_list_element *command; | |
15139 | ||
0450cc4c | 15140 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15141 | &catch_cmdlist); |
15142 | set_cmd_sfunc (command, sfunc); | |
15143 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15144 | set_cmd_completer (command, completer); |
44feb3ce | 15145 | |
0450cc4c | 15146 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15147 | &tcatch_cmdlist); |
15148 | set_cmd_sfunc (command, sfunc); | |
15149 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15150 | set_cmd_completer (command, completer); |
44feb3ce TT |
15151 | } |
15152 | ||
6149aea9 | 15153 | static void |
981a3fb3 | 15154 | save_command (const char *arg, int from_tty) |
6149aea9 | 15155 | { |
3e43a32a MS |
15156 | printf_unfiltered (_("\"save\" must be followed by " |
15157 | "the name of a save subcommand.\n")); | |
635c7e8a | 15158 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15159 | } |
15160 | ||
84f4c1fe PM |
15161 | struct breakpoint * |
15162 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15163 | void *data) | |
15164 | { | |
35df4500 | 15165 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15166 | |
35df4500 | 15167 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15168 | { |
15169 | if ((*callback) (b, data)) | |
15170 | return b; | |
15171 | } | |
15172 | ||
15173 | return NULL; | |
15174 | } | |
15175 | ||
0574c78f GB |
15176 | /* Zero if any of the breakpoint's locations could be a location where |
15177 | functions have been inlined, nonzero otherwise. */ | |
15178 | ||
15179 | static int | |
15180 | is_non_inline_function (struct breakpoint *b) | |
15181 | { | |
15182 | /* The shared library event breakpoint is set on the address of a | |
15183 | non-inline function. */ | |
15184 | if (b->type == bp_shlib_event) | |
15185 | return 1; | |
15186 | ||
15187 | return 0; | |
15188 | } | |
15189 | ||
15190 | /* Nonzero if the specified PC cannot be a location where functions | |
15191 | have been inlined. */ | |
15192 | ||
15193 | int | |
accd0bcd | 15194 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15195 | const struct target_waitstatus *ws) |
0574c78f GB |
15196 | { |
15197 | struct breakpoint *b; | |
15198 | struct bp_location *bl; | |
15199 | ||
15200 | ALL_BREAKPOINTS (b) | |
15201 | { | |
15202 | if (!is_non_inline_function (b)) | |
15203 | continue; | |
15204 | ||
15205 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15206 | { | |
15207 | if (!bl->shlib_disabled | |
09ac7c10 | 15208 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15209 | return 1; |
15210 | } | |
15211 | } | |
15212 | ||
15213 | return 0; | |
15214 | } | |
15215 | ||
2f202fde JK |
15216 | /* Remove any references to OBJFILE which is going to be freed. */ |
15217 | ||
15218 | void | |
15219 | breakpoint_free_objfile (struct objfile *objfile) | |
15220 | { | |
15221 | struct bp_location **locp, *loc; | |
15222 | ||
15223 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15224 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15225 | loc->symtab = NULL; |
15226 | } | |
15227 | ||
2060206e PA |
15228 | void |
15229 | initialize_breakpoint_ops (void) | |
15230 | { | |
15231 | static int initialized = 0; | |
15232 | ||
15233 | struct breakpoint_ops *ops; | |
15234 | ||
15235 | if (initialized) | |
15236 | return; | |
15237 | initialized = 1; | |
15238 | ||
15239 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15240 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15241 | internal and momentary breakpoints, etc.). */ | |
15242 | ops = &bkpt_base_breakpoint_ops; | |
15243 | *ops = base_breakpoint_ops; | |
15244 | ops->re_set = bkpt_re_set; | |
15245 | ops->insert_location = bkpt_insert_location; | |
15246 | ops->remove_location = bkpt_remove_location; | |
15247 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15248 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15249 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15250 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15251 | |
15252 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15253 | ops = &bkpt_breakpoint_ops; | |
15254 | *ops = bkpt_base_breakpoint_ops; | |
15255 | ops->re_set = bkpt_re_set; | |
15256 | ops->resources_needed = bkpt_resources_needed; | |
15257 | ops->print_it = bkpt_print_it; | |
15258 | ops->print_mention = bkpt_print_mention; | |
15259 | ops->print_recreate = bkpt_print_recreate; | |
15260 | ||
15261 | /* Ranged breakpoints. */ | |
15262 | ops = &ranged_breakpoint_ops; | |
15263 | *ops = bkpt_breakpoint_ops; | |
15264 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15265 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15266 | ops->print_it = print_it_ranged_breakpoint; | |
15267 | ops->print_one = print_one_ranged_breakpoint; | |
15268 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15269 | ops->print_mention = print_mention_ranged_breakpoint; | |
15270 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15271 | ||
15272 | /* Internal breakpoints. */ | |
15273 | ops = &internal_breakpoint_ops; | |
15274 | *ops = bkpt_base_breakpoint_ops; | |
15275 | ops->re_set = internal_bkpt_re_set; | |
15276 | ops->check_status = internal_bkpt_check_status; | |
15277 | ops->print_it = internal_bkpt_print_it; | |
15278 | ops->print_mention = internal_bkpt_print_mention; | |
15279 | ||
15280 | /* Momentary breakpoints. */ | |
15281 | ops = &momentary_breakpoint_ops; | |
15282 | *ops = bkpt_base_breakpoint_ops; | |
15283 | ops->re_set = momentary_bkpt_re_set; | |
15284 | ops->check_status = momentary_bkpt_check_status; | |
15285 | ops->print_it = momentary_bkpt_print_it; | |
15286 | ops->print_mention = momentary_bkpt_print_mention; | |
15287 | ||
55aa24fb SDJ |
15288 | /* Probe breakpoints. */ |
15289 | ops = &bkpt_probe_breakpoint_ops; | |
15290 | *ops = bkpt_breakpoint_ops; | |
15291 | ops->insert_location = bkpt_probe_insert_location; | |
15292 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15293 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15294 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15295 | |
2060206e PA |
15296 | /* Watchpoints. */ |
15297 | ops = &watchpoint_breakpoint_ops; | |
15298 | *ops = base_breakpoint_ops; | |
15299 | ops->re_set = re_set_watchpoint; | |
15300 | ops->insert_location = insert_watchpoint; | |
15301 | ops->remove_location = remove_watchpoint; | |
15302 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15303 | ops->check_status = check_status_watchpoint; | |
15304 | ops->resources_needed = resources_needed_watchpoint; | |
15305 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15306 | ops->print_it = print_it_watchpoint; | |
15307 | ops->print_mention = print_mention_watchpoint; | |
15308 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15309 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15310 | |
15311 | /* Masked watchpoints. */ | |
15312 | ops = &masked_watchpoint_breakpoint_ops; | |
15313 | *ops = watchpoint_breakpoint_ops; | |
15314 | ops->insert_location = insert_masked_watchpoint; | |
15315 | ops->remove_location = remove_masked_watchpoint; | |
15316 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15317 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15318 | ops->print_it = print_it_masked_watchpoint; | |
15319 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15320 | ops->print_mention = print_mention_masked_watchpoint; | |
15321 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15322 | ||
15323 | /* Tracepoints. */ | |
15324 | ops = &tracepoint_breakpoint_ops; | |
15325 | *ops = base_breakpoint_ops; | |
15326 | ops->re_set = tracepoint_re_set; | |
15327 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15328 | ops->print_one_detail = tracepoint_print_one_detail; | |
15329 | ops->print_mention = tracepoint_print_mention; | |
15330 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15331 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15332 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15333 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15334 | |
55aa24fb SDJ |
15335 | /* Probe tracepoints. */ |
15336 | ops = &tracepoint_probe_breakpoint_ops; | |
15337 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15338 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15339 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15340 | |
983af33b SDJ |
15341 | /* Static tracepoints with marker (`-m'). */ |
15342 | ops = &strace_marker_breakpoint_ops; | |
15343 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15344 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15345 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15346 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15347 | |
15348 | /* Fork catchpoints. */ | |
15349 | ops = &catch_fork_breakpoint_ops; | |
15350 | *ops = base_breakpoint_ops; | |
15351 | ops->insert_location = insert_catch_fork; | |
15352 | ops->remove_location = remove_catch_fork; | |
15353 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15354 | ops->print_it = print_it_catch_fork; | |
15355 | ops->print_one = print_one_catch_fork; | |
15356 | ops->print_mention = print_mention_catch_fork; | |
15357 | ops->print_recreate = print_recreate_catch_fork; | |
15358 | ||
15359 | /* Vfork catchpoints. */ | |
15360 | ops = &catch_vfork_breakpoint_ops; | |
15361 | *ops = base_breakpoint_ops; | |
15362 | ops->insert_location = insert_catch_vfork; | |
15363 | ops->remove_location = remove_catch_vfork; | |
15364 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15365 | ops->print_it = print_it_catch_vfork; | |
15366 | ops->print_one = print_one_catch_vfork; | |
15367 | ops->print_mention = print_mention_catch_vfork; | |
15368 | ops->print_recreate = print_recreate_catch_vfork; | |
15369 | ||
15370 | /* Exec catchpoints. */ | |
15371 | ops = &catch_exec_breakpoint_ops; | |
15372 | *ops = base_breakpoint_ops; | |
2060206e PA |
15373 | ops->insert_location = insert_catch_exec; |
15374 | ops->remove_location = remove_catch_exec; | |
15375 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15376 | ops->print_it = print_it_catch_exec; | |
15377 | ops->print_one = print_one_catch_exec; | |
15378 | ops->print_mention = print_mention_catch_exec; | |
15379 | ops->print_recreate = print_recreate_catch_exec; | |
15380 | ||
edcc5120 TT |
15381 | /* Solib-related catchpoints. */ |
15382 | ops = &catch_solib_breakpoint_ops; | |
15383 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15384 | ops->insert_location = insert_catch_solib; |
15385 | ops->remove_location = remove_catch_solib; | |
15386 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15387 | ops->check_status = check_status_catch_solib; | |
15388 | ops->print_it = print_it_catch_solib; | |
15389 | ops->print_one = print_one_catch_solib; | |
15390 | ops->print_mention = print_mention_catch_solib; | |
15391 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15392 | |
15393 | ops = &dprintf_breakpoint_ops; | |
15394 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15395 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15396 | ops->resources_needed = bkpt_resources_needed; |
15397 | ops->print_it = bkpt_print_it; | |
15398 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15399 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15400 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15401 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15402 | } |
15403 | ||
8bfd80db YQ |
15404 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15405 | ||
15406 | static struct cmd_list_element *enablebreaklist = NULL; | |
15407 | ||
8588b356 SM |
15408 | /* See breakpoint.h. */ |
15409 | ||
15410 | cmd_list_element *commands_cmd_element = nullptr; | |
15411 | ||
c906108c | 15412 | void |
fba45db2 | 15413 | _initialize_breakpoint (void) |
c906108c SS |
15414 | { |
15415 | struct cmd_list_element *c; | |
15416 | ||
2060206e PA |
15417 | initialize_breakpoint_ops (); |
15418 | ||
76727919 TT |
15419 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15420 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15421 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15422 | |
c906108c SS |
15423 | breakpoint_chain = 0; |
15424 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15425 | before a breakpoint is set. */ | |
15426 | breakpoint_count = 0; | |
15427 | ||
1042e4c0 SS |
15428 | tracepoint_count = 0; |
15429 | ||
1bedd215 AC |
15430 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15431 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15432 | Usage is `ignore N COUNT'.")); | |
c906108c | 15433 | |
8588b356 SM |
15434 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15435 | commands_command, _("\ | |
18da0c51 MG |
15436 | Set commands to be executed when the given breakpoints are hit.\n\ |
15437 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15438 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15439 | (e.g. `5-7').\n\ | |
c906108c SS |
15440 | With no argument, the targeted breakpoint is the last one set.\n\ |
15441 | The commands themselves follow starting on the next line.\n\ | |
15442 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15443 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15444 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15445 | |
d55637df | 15446 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15447 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15448 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15449 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15450 | set_cmd_completer (c, condition_completer); |
c906108c | 15451 | |
1bedd215 | 15452 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15453 | Set a temporary breakpoint.\n\ |
c906108c SS |
15454 | Like \"break\" except the breakpoint is only temporary,\n\ |
15455 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15456 | by using \"enable delete\" on the breakpoint number.\n\ |
15457 | \n" | |
15458 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15459 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15460 | |
1bedd215 | 15461 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15462 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15463 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15464 | some target hardware may not have this support.\n\ |
15465 | \n" | |
15466 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15467 | set_cmd_completer (c, location_completer); |
c906108c | 15468 | |
1bedd215 | 15469 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15470 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15471 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15472 | so it will be deleted when hit.\n\ |
15473 | \n" | |
15474 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15475 | set_cmd_completer (c, location_completer); |
c906108c | 15476 | |
1bedd215 AC |
15477 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15478 | Enable some breakpoints.\n\ | |
c906108c SS |
15479 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15480 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15481 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15482 | With a subcommand you can enable temporarily."), |
c906108c | 15483 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15484 | |
15485 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15486 | ||
84951ab5 | 15487 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15488 | Enable some breakpoints.\n\ |
c906108c SS |
15489 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15490 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15491 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15492 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15493 | |
1a966eab AC |
15494 | add_cmd ("once", no_class, enable_once_command, _("\ |
15495 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15496 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15497 | &enablebreaklist); |
15498 | ||
1a966eab AC |
15499 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15500 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15501 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15502 | &enablebreaklist); |
15503 | ||
816338b5 SS |
15504 | add_cmd ("count", no_class, enable_count_command, _("\ |
15505 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15506 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15507 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15508 | &enablebreaklist); | |
15509 | ||
1a966eab AC |
15510 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15511 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15512 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15513 | &enablelist); |
15514 | ||
1a966eab AC |
15515 | add_cmd ("once", no_class, enable_once_command, _("\ |
15516 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15517 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15518 | &enablelist); |
15519 | ||
15520 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15521 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15522 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15523 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15524 | &enablelist); |
15525 | ||
1bedd215 AC |
15526 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15527 | Disable some breakpoints.\n\ | |
c906108c SS |
15528 | Arguments are breakpoint numbers with spaces in between.\n\ |
15529 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15530 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15531 | &disablelist, "disable ", 1, &cmdlist); |
15532 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15533 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15534 | |
1a966eab AC |
15535 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15536 | Disable some breakpoints.\n\ | |
c906108c SS |
15537 | Arguments are breakpoint numbers with spaces in between.\n\ |
15538 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15539 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15540 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15541 | &disablelist); |
15542 | ||
1bedd215 AC |
15543 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15544 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15545 | Arguments are breakpoint numbers with spaces in between.\n\ |
15546 | To delete all breakpoints, give no argument.\n\ | |
15547 | \n\ | |
15548 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15549 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15550 | &deletelist, "delete ", 1, &cmdlist); |
15551 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15552 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15553 | |
1a966eab AC |
15554 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15555 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15556 | Arguments are breakpoint numbers with spaces in between.\n\ |
15557 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15558 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15559 | &deletelist); |
15560 | ||
1bedd215 | 15561 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15562 | Clear breakpoint at specified location.\n\ |
15563 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15564 | \n\ |
15565 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15566 | is executing in.\n" |
89549d7f | 15567 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15568 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15569 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15570 | |
1bedd215 | 15571 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15572 | Set breakpoint at specified location.\n" |
31e2b00f | 15573 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15574 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15575 | |
c906108c SS |
15576 | add_com_alias ("b", "break", class_run, 1); |
15577 | add_com_alias ("br", "break", class_run, 1); | |
15578 | add_com_alias ("bre", "break", class_run, 1); | |
15579 | add_com_alias ("brea", "break", class_run, 1); | |
15580 | ||
c906108c SS |
15581 | if (dbx_commands) |
15582 | { | |
1bedd215 AC |
15583 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15584 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15585 | &stoplist, "stop ", 1, &cmdlist); |
15586 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15587 | _("Break in function or address."), &stoplist); |
c5aa993b | 15588 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15589 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15590 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15591 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15592 | The \"Type\" column indicates one of:\n\ |
15593 | \tbreakpoint - normal breakpoint\n\ | |
15594 | \twatchpoint - watchpoint\n\ | |
15595 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15596 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15597 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15598 | address and file/line number respectively.\n\ |
15599 | \n\ | |
15600 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15601 | are set to the address of the last breakpoint listed unless the command\n\ |
15602 | is prefixed with \"server \".\n\n\ | |
c906108c | 15603 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15604 | breakpoint set.")); |
c906108c SS |
15605 | } |
15606 | ||
11db9430 | 15607 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15608 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15609 | The \"Type\" column indicates one of:\n\ |
15610 | \tbreakpoint - normal breakpoint\n\ | |
15611 | \twatchpoint - watchpoint\n\ | |
15612 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15613 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15614 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15615 | address and file/line number respectively.\n\ |
15616 | \n\ | |
15617 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15618 | are set to the address of the last breakpoint listed unless the command\n\ |
15619 | is prefixed with \"server \".\n\n\ | |
c906108c | 15620 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15621 | breakpoint set.")); |
c906108c | 15622 | |
6b04bdb7 MS |
15623 | add_info_alias ("b", "breakpoints", 1); |
15624 | ||
1a966eab AC |
15625 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15626 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15627 | The \"Type\" column indicates one of:\n\ |
15628 | \tbreakpoint - normal breakpoint\n\ | |
15629 | \twatchpoint - watchpoint\n\ | |
15630 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15631 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15632 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15633 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15634 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15635 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15636 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15637 | address and file/line number respectively.\n\ |
15638 | \n\ | |
15639 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15640 | are set to the address of the last breakpoint listed unless the command\n\ |
15641 | is prefixed with \"server \".\n\n\ | |
c906108c | 15642 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15643 | breakpoint set."), |
c906108c SS |
15644 | &maintenanceinfolist); |
15645 | ||
44feb3ce TT |
15646 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15647 | Set catchpoints to catch events."), | |
15648 | &catch_cmdlist, "catch ", | |
15649 | 0/*allow-unknown*/, &cmdlist); | |
15650 | ||
15651 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15652 | Set temporary catchpoints to catch events."), | |
15653 | &tcatch_cmdlist, "tcatch ", | |
15654 | 0/*allow-unknown*/, &cmdlist); | |
15655 | ||
44feb3ce TT |
15656 | add_catch_command ("fork", _("Catch calls to fork."), |
15657 | catch_fork_command_1, | |
a96d9b2e | 15658 | NULL, |
44feb3ce TT |
15659 | (void *) (uintptr_t) catch_fork_permanent, |
15660 | (void *) (uintptr_t) catch_fork_temporary); | |
15661 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15662 | catch_fork_command_1, | |
a96d9b2e | 15663 | NULL, |
44feb3ce TT |
15664 | (void *) (uintptr_t) catch_vfork_permanent, |
15665 | (void *) (uintptr_t) catch_vfork_temporary); | |
15666 | add_catch_command ("exec", _("Catch calls to exec."), | |
15667 | catch_exec_command_1, | |
a96d9b2e SDJ |
15668 | NULL, |
15669 | CATCH_PERMANENT, | |
15670 | CATCH_TEMPORARY); | |
edcc5120 TT |
15671 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15672 | Usage: catch load [REGEX]\n\ | |
15673 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15674 | catch_load_command_1, | |
15675 | NULL, | |
15676 | CATCH_PERMANENT, | |
15677 | CATCH_TEMPORARY); | |
15678 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15679 | Usage: catch unload [REGEX]\n\ | |
15680 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15681 | catch_unload_command_1, | |
15682 | NULL, | |
15683 | CATCH_PERMANENT, | |
15684 | CATCH_TEMPORARY); | |
c5aa993b | 15685 | |
1bedd215 AC |
15686 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15687 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15688 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15689 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15690 | an expression changes.\n\ |
15691 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15692 | the memory to which it refers.")); | |
65d12d83 | 15693 | set_cmd_completer (c, expression_completer); |
c906108c | 15694 | |
1bedd215 AC |
15695 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15696 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15697 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15698 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15699 | an expression is read.\n\ |
15700 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15701 | the memory to which it refers.")); | |
65d12d83 | 15702 | set_cmd_completer (c, expression_completer); |
c906108c | 15703 | |
1bedd215 AC |
15704 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15705 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15706 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15707 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15708 | an expression is either read or written.\n\ |
15709 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15710 | the memory to which it refers.")); | |
65d12d83 | 15711 | set_cmd_completer (c, expression_completer); |
c906108c | 15712 | |
11db9430 | 15713 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15714 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15715 | |
920d2a44 AC |
15716 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15717 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15718 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15719 | &can_use_hw_watchpoints, _("\ | |
15720 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15721 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15722 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15723 | such is available. (However, any hardware watchpoints that were\n\ | |
15724 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15725 | hardware.)"), |
15726 | NULL, | |
920d2a44 | 15727 | show_can_use_hw_watchpoints, |
85c07804 | 15728 | &setlist, &showlist); |
c906108c SS |
15729 | |
15730 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15731 | |
1042e4c0 SS |
15732 | /* Tracepoint manipulation commands. */ |
15733 | ||
15734 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15735 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15736 | \n" |
15737 | BREAK_ARGS_HELP ("trace") "\n\ | |
15738 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15739 | set_cmd_completer (c, location_completer); | |
15740 | ||
15741 | add_com_alias ("tp", "trace", class_alias, 0); | |
15742 | add_com_alias ("tr", "trace", class_alias, 1); | |
15743 | add_com_alias ("tra", "trace", class_alias, 1); | |
15744 | add_com_alias ("trac", "trace", class_alias, 1); | |
15745 | ||
7a697b8d | 15746 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15747 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15748 | \n" |
15749 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15750 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15751 | set_cmd_completer (c, location_completer); | |
15752 | ||
0fb4aa4b | 15753 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15754 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15755 | \n\ |
15756 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15757 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15758 | or -m MARKER_ID.\n\n\ | |
15759 | If a marker id is specified, probe the marker with that name. With\n\ | |
15760 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15761 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15762 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15763 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15764 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15765 | \n\ | |
15766 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15767 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15768 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15769 | conditions are different.\n\ | |
0fb4aa4b PA |
15770 | \n\ |
15771 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15772 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15773 | set_cmd_completer (c, location_completer); | |
15774 | ||
11db9430 | 15775 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15776 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15777 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15778 | last tracepoint set.")); | |
15779 | ||
15780 | add_info_alias ("tp", "tracepoints", 1); | |
15781 | ||
15782 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15783 | Delete specified tracepoints.\n\ | |
15784 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15785 | No argument means delete all tracepoints."), | |
15786 | &deletelist); | |
7e20dfcd | 15787 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15788 | |
15789 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15790 | Disable specified tracepoints.\n\ | |
15791 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15792 | No argument means disable all tracepoints."), | |
15793 | &disablelist); | |
15794 | deprecate_cmd (c, "disable"); | |
15795 | ||
15796 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15797 | Enable specified tracepoints.\n\ | |
15798 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15799 | No argument means enable all tracepoints."), | |
15800 | &enablelist); | |
15801 | deprecate_cmd (c, "enable"); | |
15802 | ||
15803 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15804 | Set the passcount for a tracepoint.\n\ | |
15805 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15806 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15807 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15808 | ||
6149aea9 PA |
15809 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15810 | _("Save breakpoint definitions as a script."), | |
15811 | &save_cmdlist, "save ", | |
15812 | 0/*allow-unknown*/, &cmdlist); | |
15813 | ||
15814 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15815 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15816 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15817 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15818 | session to restore them."), | |
15819 | &save_cmdlist); | |
15820 | set_cmd_completer (c, filename_completer); | |
15821 | ||
15822 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15823 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15824 | Use the 'source' command in another debug session to restore them."), |
15825 | &save_cmdlist); | |
1042e4c0 SS |
15826 | set_cmd_completer (c, filename_completer); |
15827 | ||
6149aea9 PA |
15828 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15829 | deprecate_cmd (c, "save tracepoints"); | |
15830 | ||
1bedd215 | 15831 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15832 | Breakpoint specific settings\n\ |
15833 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15834 | pending breakpoint behavior"), |
fa8d40ab JJ |
15835 | &breakpoint_set_cmdlist, "set breakpoint ", |
15836 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15837 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15838 | Breakpoint specific settings\n\ |
15839 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15840 | pending breakpoint behavior"), |
fa8d40ab JJ |
15841 | &breakpoint_show_cmdlist, "show breakpoint ", |
15842 | 0/*allow-unknown*/, &showlist); | |
15843 | ||
7915a72c AC |
15844 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15845 | &pending_break_support, _("\ | |
15846 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15847 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15848 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15849 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15850 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15851 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15852 | NULL, |
920d2a44 | 15853 | show_pending_break_support, |
6e1d7d6c AC |
15854 | &breakpoint_set_cmdlist, |
15855 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15856 | |
15857 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15858 | |
15859 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15860 | &automatic_hardware_breakpoints, _("\ | |
15861 | Set automatic usage of hardware breakpoints."), _("\ | |
15862 | Show automatic usage of hardware breakpoints."), _("\ | |
15863 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15864 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15865 | a warning will be emitted for such breakpoints."), | |
15866 | NULL, | |
15867 | show_automatic_hardware_breakpoints, | |
15868 | &breakpoint_set_cmdlist, | |
15869 | &breakpoint_show_cmdlist); | |
74960c60 | 15870 | |
a25a5a45 PA |
15871 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15872 | &always_inserted_mode, _("\ | |
74960c60 VP |
15873 | Set mode for inserting breakpoints."), _("\ |
15874 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15875 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15876 | they're created, kept inserted even when execution stops, and removed\n\ | |
15877 | only when the user deletes them. When this mode is off (the default),\n\ | |
15878 | breakpoints are inserted only when execution continues, and removed\n\ | |
15879 | when execution stops."), | |
72d0e2c5 YQ |
15880 | NULL, |
15881 | &show_always_inserted_mode, | |
15882 | &breakpoint_set_cmdlist, | |
15883 | &breakpoint_show_cmdlist); | |
f1310107 | 15884 | |
b775012e LM |
15885 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15886 | condition_evaluation_enums, | |
15887 | &condition_evaluation_mode_1, _("\ | |
15888 | Set mode of breakpoint condition evaluation."), _("\ | |
15889 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15890 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15891 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15892 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15893 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15894 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15895 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15896 | be set to \"gdb\""), | |
15897 | &set_condition_evaluation_mode, | |
15898 | &show_condition_evaluation_mode, | |
15899 | &breakpoint_set_cmdlist, | |
15900 | &breakpoint_show_cmdlist); | |
15901 | ||
f1310107 TJB |
15902 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15903 | Set a breakpoint for an address range.\n\ | |
15904 | break-range START-LOCATION, END-LOCATION\n\ | |
15905 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15906 | LINENUM, for that line in the current file,\n\ | |
15907 | FILE:LINENUM, for that line in that file,\n\ | |
15908 | +OFFSET, for that number of lines after the current line\n\ | |
15909 | or the start of the range\n\ | |
15910 | FUNCTION, for the first line in that function,\n\ | |
15911 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15912 | *ADDRESS, for the instruction at that address.\n\ | |
15913 | \n\ | |
15914 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15915 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15916 | range (including START-LOCATION and END-LOCATION).")); | |
15917 | ||
e7e0cddf | 15918 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15919 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15920 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15921 | location may be a linespec, explicit, or address location.\n" |
15922 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15923 | set_cmd_completer (c, location_completer); |
15924 | ||
15925 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15926 | dprintf_style_enums, &dprintf_style, _("\ | |
15927 | Set the style of usage for dynamic printf."), _("\ | |
15928 | Show the style of usage for dynamic printf."), _("\ | |
15929 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15930 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15931 | console, as with the \"printf\" command.\n\ | |
15932 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15933 | program; by default printf(), but you can choose a different function or\n\ | |
15934 | output stream by setting dprintf-function and dprintf-channel."), | |
15935 | update_dprintf_commands, NULL, | |
15936 | &setlist, &showlist); | |
15937 | ||
15938 | dprintf_function = xstrdup ("printf"); | |
15939 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15940 | &dprintf_function, _("\ | |
15941 | Set the function to use for dynamic printf"), _("\ | |
15942 | Show the function to use for dynamic printf"), NULL, | |
15943 | update_dprintf_commands, NULL, | |
15944 | &setlist, &showlist); | |
15945 | ||
15946 | dprintf_channel = xstrdup (""); | |
15947 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15948 | &dprintf_channel, _("\ | |
15949 | Set the channel to use for dynamic printf"), _("\ | |
15950 | Show the channel to use for dynamic printf"), NULL, | |
15951 | update_dprintf_commands, NULL, | |
15952 | &setlist, &showlist); | |
15953 | ||
d3ce09f5 SS |
15954 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15955 | &disconnected_dprintf, _("\ | |
15956 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15957 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15958 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15959 | even if GDB disconnects or detaches from the target."), | |
15960 | NULL, | |
15961 | NULL, | |
15962 | &setlist, &showlist); | |
15963 | ||
15964 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
15965 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
15966 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
15967 | ||
765dc015 | 15968 | automatic_hardware_breakpoints = 1; |
f3b1572e | 15969 | |
76727919 TT |
15970 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
15971 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 15972 | } |