Commit | Line | Data |
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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 | ||
a38118e5 PA |
5977 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
5978 | instead of going via breakpoint_ops::print_one. This makes "maint | |
5979 | info breakpoints" show the software breakpoint locations of | |
5980 | catchpoints, which are considered internal implementation | |
5981 | detail. */ | |
269b11a2 PA |
5982 | |
5983 | static void | |
5984 | print_one_breakpoint_location (struct breakpoint *b, | |
5985 | struct bp_location *loc, | |
5986 | int loc_number, | |
5987 | struct bp_location **last_loc, | |
a38118e5 | 5988 | int allflag, bool raw_loc) |
269b11a2 PA |
5989 | { |
5990 | struct command_line *l; | |
c2c6d25f | 5991 | static char bpenables[] = "nynny"; |
c906108c | 5992 | |
79a45e25 | 5993 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5994 | int header_of_multiple = 0; |
5995 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5996 | struct value_print_options opts; |
5997 | ||
5998 | get_user_print_options (&opts); | |
0d381245 VP |
5999 | |
6000 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6001 | /* See comment in print_one_breakpoint concerning treatment of |
6002 | breakpoints with single disabled location. */ | |
0d381245 VP |
6003 | if (loc == NULL |
6004 | && (b->loc != NULL | |
6005 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6006 | header_of_multiple = 1; | |
6007 | if (loc == NULL) | |
6008 | loc = b->loc; | |
6009 | ||
c4093a6a JM |
6010 | annotate_record (); |
6011 | ||
6012 | /* 1 */ | |
6013 | annotate_field (0); | |
0d381245 | 6014 | if (part_of_multiple) |
528e1572 | 6015 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6016 | else |
528e1572 | 6017 | uiout->field_int ("number", b->number); |
c4093a6a JM |
6018 | |
6019 | /* 2 */ | |
6020 | annotate_field (1); | |
0d381245 | 6021 | if (part_of_multiple) |
112e8700 | 6022 | uiout->field_skip ("type"); |
269b11a2 | 6023 | else |
112e8700 | 6024 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6025 | |
6026 | /* 3 */ | |
6027 | annotate_field (2); | |
0d381245 | 6028 | if (part_of_multiple) |
112e8700 | 6029 | uiout->field_skip ("disp"); |
0d381245 | 6030 | else |
112e8700 | 6031 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6032 | |
c4093a6a JM |
6033 | /* 4 */ |
6034 | annotate_field (3); | |
0d381245 | 6035 | if (part_of_multiple) |
112e8700 | 6036 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6037 | else |
112e8700 | 6038 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6039 | |
c4093a6a | 6040 | /* 5 and 6 */ |
a38118e5 | 6041 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6042 | b->ops->print_one (b, last_loc); |
3086aeae | 6043 | else |
a38118e5 PA |
6044 | { |
6045 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6046 | { |
6047 | struct watchpoint *w = (struct watchpoint *) b; | |
6048 | ||
6049 | /* Field 4, the address, is omitted (which makes the columns | |
6050 | not line up too nicely with the headers, but the effect | |
6051 | is relatively readable). */ | |
6052 | if (opts.addressprint) | |
112e8700 | 6053 | uiout->field_skip ("addr"); |
3a5c3e22 | 6054 | annotate_field (5); |
112e8700 | 6055 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6056 | } |
a38118e5 PA |
6057 | else if (!is_catchpoint (b) || is_exception_catchpoint (b)) |
6058 | { | |
6059 | if (opts.addressprint) | |
6060 | { | |
6061 | annotate_field (4); | |
6062 | if (header_of_multiple) | |
6063 | uiout->field_string ("addr", "<MULTIPLE>"); | |
6064 | else if (b->loc == NULL || loc->shlib_disabled) | |
6065 | uiout->field_string ("addr", "<PENDING>"); | |
6066 | else | |
6067 | uiout->field_core_addr ("addr", | |
6068 | loc->gdbarch, loc->address); | |
6069 | } | |
6070 | annotate_field (5); | |
6071 | if (!header_of_multiple) | |
6072 | print_breakpoint_location (b, loc); | |
6073 | if (b->loc) | |
6074 | *last_loc = b->loc; | |
6075 | } | |
6076 | } | |
6c95b8df | 6077 | |
998580f1 | 6078 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6079 | { |
5c632425 | 6080 | std::vector<int> inf_nums; |
998580f1 | 6081 | int mi_only = 1; |
6c95b8df | 6082 | |
08036331 | 6083 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6084 | { |
6085 | if (inf->pspace == loc->pspace) | |
5c632425 | 6086 | inf_nums.push_back (inf->num); |
6c95b8df | 6087 | } |
998580f1 MK |
6088 | |
6089 | /* For backward compatibility, don't display inferiors in CLI unless | |
6090 | there are several. Always display for MI. */ | |
6091 | if (allflag | |
6092 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6093 | && (number_of_program_spaces () > 1 | |
6094 | || number_of_inferiors () > 1) | |
6095 | /* LOC is for existing B, it cannot be in | |
6096 | moribund_locations and thus having NULL OWNER. */ | |
6097 | && loc->owner->type != bp_catchpoint)) | |
6098 | mi_only = 0; | |
5c632425 | 6099 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6100 | } |
6101 | ||
4a306c9a | 6102 | if (!part_of_multiple) |
c4093a6a | 6103 | { |
4a306c9a JB |
6104 | if (b->thread != -1) |
6105 | { | |
6106 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6107 | "stop only in" line a little further down. */ |
112e8700 SM |
6108 | uiout->text (" thread "); |
6109 | uiout->field_int ("thread", b->thread); | |
4a306c9a JB |
6110 | } |
6111 | else if (b->task != 0) | |
6112 | { | |
112e8700 SM |
6113 | uiout->text (" task "); |
6114 | uiout->field_int ("task", b->task); | |
4a306c9a | 6115 | } |
c4093a6a | 6116 | } |
f1310107 | 6117 | |
112e8700 | 6118 | uiout->text ("\n"); |
f1310107 | 6119 | |
348d480f | 6120 | if (!part_of_multiple) |
f1310107 TJB |
6121 | b->ops->print_one_detail (b, uiout); |
6122 | ||
0d381245 | 6123 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6124 | { |
6125 | annotate_field (6); | |
112e8700 | 6126 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6127 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6128 | the frame ID. */ |
112e8700 | 6129 | uiout->field_core_addr ("frame", |
5af949e3 | 6130 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6131 | uiout->text ("\n"); |
c4093a6a JM |
6132 | } |
6133 | ||
28010a5d | 6134 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6135 | { |
6136 | annotate_field (7); | |
d77f58be | 6137 | if (is_tracepoint (b)) |
112e8700 | 6138 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6139 | else |
112e8700 SM |
6140 | uiout->text ("\tstop only if "); |
6141 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6142 | |
6143 | /* Print whether the target is doing the breakpoint's condition | |
6144 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6145 | if (is_breakpoint (b) | |
6146 | && breakpoint_condition_evaluation_mode () | |
6147 | == condition_evaluation_target) | |
6148 | { | |
112e8700 SM |
6149 | uiout->text (" ("); |
6150 | uiout->field_string ("evaluated-by", | |
b775012e | 6151 | bp_condition_evaluator (b)); |
112e8700 | 6152 | uiout->text (" evals)"); |
b775012e | 6153 | } |
112e8700 | 6154 | uiout->text ("\n"); |
0101ce28 JJ |
6155 | } |
6156 | ||
0d381245 | 6157 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6158 | { |
4a64f543 | 6159 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6160 | uiout->text ("\tstop only in thread "); |
6161 | if (uiout->is_mi_like_p ()) | |
6162 | uiout->field_int ("thread", b->thread); | |
5d5658a1 PA |
6163 | else |
6164 | { | |
6165 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6166 | ||
112e8700 | 6167 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6168 | } |
112e8700 | 6169 | uiout->text ("\n"); |
c4093a6a JM |
6170 | } |
6171 | ||
556ec64d YQ |
6172 | if (!part_of_multiple) |
6173 | { | |
6174 | if (b->hit_count) | |
31f56a27 YQ |
6175 | { |
6176 | /* FIXME should make an annotation for this. */ | |
6177 | if (is_catchpoint (b)) | |
112e8700 | 6178 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6179 | else if (is_tracepoint (b)) |
112e8700 | 6180 | uiout->text ("\ttracepoint"); |
31f56a27 | 6181 | else |
112e8700 SM |
6182 | uiout->text ("\tbreakpoint"); |
6183 | uiout->text (" already hit "); | |
6184 | uiout->field_int ("times", b->hit_count); | |
31f56a27 | 6185 | if (b->hit_count == 1) |
112e8700 | 6186 | uiout->text (" time\n"); |
31f56a27 | 6187 | else |
112e8700 | 6188 | uiout->text (" times\n"); |
31f56a27 | 6189 | } |
556ec64d YQ |
6190 | else |
6191 | { | |
31f56a27 | 6192 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 SM |
6193 | if (uiout->is_mi_like_p ()) |
6194 | uiout->field_int ("times", b->hit_count); | |
556ec64d YQ |
6195 | } |
6196 | } | |
8b93c638 | 6197 | |
0d381245 | 6198 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6199 | { |
6200 | annotate_field (8); | |
112e8700 SM |
6201 | uiout->text ("\tignore next "); |
6202 | uiout->field_int ("ignore", b->ignore_count); | |
6203 | uiout->text (" hits\n"); | |
c4093a6a | 6204 | } |
059fb39f | 6205 | |
816338b5 SS |
6206 | /* Note that an enable count of 1 corresponds to "enable once" |
6207 | behavior, which is reported by the combination of enablement and | |
6208 | disposition, so we don't need to mention it here. */ | |
6209 | if (!part_of_multiple && b->enable_count > 1) | |
6210 | { | |
6211 | annotate_field (8); | |
112e8700 | 6212 | uiout->text ("\tdisable after "); |
816338b5 SS |
6213 | /* Tweak the wording to clarify that ignore and enable counts |
6214 | are distinct, and have additive effect. */ | |
6215 | if (b->ignore_count) | |
112e8700 | 6216 | uiout->text ("additional "); |
816338b5 | 6217 | else |
112e8700 SM |
6218 | uiout->text ("next "); |
6219 | uiout->field_int ("enable", b->enable_count); | |
6220 | uiout->text (" hits\n"); | |
816338b5 SS |
6221 | } |
6222 | ||
f196051f SS |
6223 | if (!part_of_multiple && is_tracepoint (b)) |
6224 | { | |
6225 | struct tracepoint *tp = (struct tracepoint *) b; | |
6226 | ||
6227 | if (tp->traceframe_usage) | |
6228 | { | |
112e8700 SM |
6229 | uiout->text ("\ttrace buffer usage "); |
6230 | uiout->field_int ("traceframe-usage", tp->traceframe_usage); | |
6231 | uiout->text (" bytes\n"); | |
f196051f SS |
6232 | } |
6233 | } | |
d3ce09f5 | 6234 | |
d1b0a7bf | 6235 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6236 | if (!part_of_multiple && l) |
c4093a6a JM |
6237 | { |
6238 | annotate_field (9); | |
2e783024 | 6239 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6240 | print_command_lines (uiout, l, 4); |
c4093a6a | 6241 | } |
d24317b4 | 6242 | |
d9b3f62e | 6243 | if (is_tracepoint (b)) |
1042e4c0 | 6244 | { |
d9b3f62e PA |
6245 | struct tracepoint *t = (struct tracepoint *) b; |
6246 | ||
6247 | if (!part_of_multiple && t->pass_count) | |
6248 | { | |
6249 | annotate_field (10); | |
112e8700 SM |
6250 | uiout->text ("\tpass count "); |
6251 | uiout->field_int ("pass", t->pass_count); | |
6252 | uiout->text (" \n"); | |
d9b3f62e | 6253 | } |
f2a8bc8a YQ |
6254 | |
6255 | /* Don't display it when tracepoint or tracepoint location is | |
6256 | pending. */ | |
6257 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6258 | { | |
6259 | annotate_field (11); | |
6260 | ||
112e8700 SM |
6261 | if (uiout->is_mi_like_p ()) |
6262 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6263 | loc->inserted ? "y" : "n"); |
6264 | else | |
6265 | { | |
6266 | if (loc->inserted) | |
112e8700 | 6267 | uiout->text ("\t"); |
f2a8bc8a | 6268 | else |
112e8700 SM |
6269 | uiout->text ("\tnot "); |
6270 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6271 | } |
6272 | } | |
1042e4c0 SS |
6273 | } |
6274 | ||
112e8700 | 6275 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6276 | { |
3a5c3e22 PA |
6277 | if (is_watchpoint (b)) |
6278 | { | |
6279 | struct watchpoint *w = (struct watchpoint *) b; | |
6280 | ||
112e8700 | 6281 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6282 | } |
f00aae0f | 6283 | else if (b->location != NULL |
d28cd78a | 6284 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6285 | uiout->field_string ("original-location", |
d28cd78a | 6286 | event_location_to_string (b->location.get ())); |
d24317b4 | 6287 | } |
c4093a6a | 6288 | } |
c5aa993b | 6289 | |
13674803 SM |
6290 | /* See breakpoint.h. */ |
6291 | ||
6292 | bool fix_multi_location_breakpoint_output_globally = false; | |
6293 | ||
0d381245 VP |
6294 | static void |
6295 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6296 | struct bp_location **last_loc, |
6c95b8df | 6297 | int allflag) |
0d381245 | 6298 | { |
79a45e25 | 6299 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6300 | bool use_fixed_output |
6301 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6302 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6303 | |
b4be1b06 | 6304 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6305 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6306 | |
b4be1b06 SM |
6307 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6308 | are outside. */ | |
6309 | if (!use_fixed_output) | |
6310 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6311 | |
6312 | /* If this breakpoint has custom print function, | |
6313 | it's already printed. Otherwise, print individual | |
6314 | locations, if any. */ | |
a38118e5 PA |
6315 | if (b->ops == NULL |
6316 | || b->ops->print_one == NULL | |
6317 | || allflag) | |
0d381245 | 6318 | { |
4a64f543 MS |
6319 | /* If breakpoint has a single location that is disabled, we |
6320 | print it as if it had several locations, since otherwise it's | |
6321 | hard to represent "breakpoint enabled, location disabled" | |
6322 | situation. | |
6323 | ||
6324 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6325 | internally, that's not a property exposed to users. |
6326 | ||
6327 | Likewise, while catchpoints may be implemented with | |
6328 | breakpoints (e.g., catch throw), that's not a property | |
6329 | exposed to users. We do however display the internal | |
6330 | breakpoint locations with "maint info breakpoints". */ | |
6331 | if (!is_hardware_watchpoint (b) | |
6332 | && (!is_catchpoint (b) || is_exception_catchpoint (b)) | |
6333 | && (allflag | |
6334 | || (b->loc && (b->loc->next || !b->loc->enabled)))) | |
0d381245 | 6335 | { |
b4be1b06 SM |
6336 | gdb::optional<ui_out_emit_list> locations_list; |
6337 | ||
6338 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6339 | MI record. For later versions, place breakpoint locations in a | |
6340 | list. */ | |
6341 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6342 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6343 | |
b4be1b06 SM |
6344 | int n = 1; |
6345 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6346 | { |
b4be1b06 | 6347 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6348 | print_one_breakpoint_location (b, loc, n, last_loc, |
6349 | allflag, allflag); | |
8d3788bd | 6350 | } |
0d381245 VP |
6351 | } |
6352 | } | |
6353 | } | |
6354 | ||
a6d9a66e UW |
6355 | static int |
6356 | breakpoint_address_bits (struct breakpoint *b) | |
6357 | { | |
6358 | int print_address_bits = 0; | |
6359 | struct bp_location *loc; | |
6360 | ||
c6d81124 PA |
6361 | /* Software watchpoints that aren't watching memory don't have an |
6362 | address to print. */ | |
6363 | if (is_no_memory_software_watchpoint (b)) | |
6364 | return 0; | |
6365 | ||
a6d9a66e UW |
6366 | for (loc = b->loc; loc; loc = loc->next) |
6367 | { | |
c7437ca6 PA |
6368 | int addr_bit; |
6369 | ||
c7437ca6 | 6370 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6371 | if (addr_bit > print_address_bits) |
6372 | print_address_bits = addr_bit; | |
6373 | } | |
6374 | ||
6375 | return print_address_bits; | |
6376 | } | |
0d381245 | 6377 | |
65630365 | 6378 | /* See breakpoint.h. */ |
c5aa993b | 6379 | |
65630365 PA |
6380 | void |
6381 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6382 | { |
a6d9a66e | 6383 | struct bp_location *dummy_loc = NULL; |
65630365 | 6384 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6385 | } |
c5aa993b | 6386 | |
09d682a4 TT |
6387 | /* Return true if this breakpoint was set by the user, false if it is |
6388 | internal or momentary. */ | |
6389 | ||
6390 | int | |
6391 | user_breakpoint_p (struct breakpoint *b) | |
6392 | { | |
46c6471b | 6393 | return b->number > 0; |
09d682a4 TT |
6394 | } |
6395 | ||
93daf339 TT |
6396 | /* See breakpoint.h. */ |
6397 | ||
6398 | int | |
6399 | pending_breakpoint_p (struct breakpoint *b) | |
6400 | { | |
6401 | return b->loc == NULL; | |
6402 | } | |
6403 | ||
7f3b0473 | 6404 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6405 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6406 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6407 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6408 | ones for which it returns non-zero. Return the total number of | |
6409 | breakpoints listed. */ | |
c906108c | 6410 | |
d77f58be | 6411 | static int |
4495129a | 6412 | breakpoint_1 (const char *args, int allflag, |
4a64f543 | 6413 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6414 | { |
52f0bd74 | 6415 | struct breakpoint *b; |
a6d9a66e | 6416 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6417 | int nr_printable_breakpoints; |
79a45b7d | 6418 | struct value_print_options opts; |
a6d9a66e | 6419 | int print_address_bits = 0; |
269b11a2 | 6420 | int print_type_col_width = 14; |
79a45e25 | 6421 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6422 | |
79a45b7d TT |
6423 | get_user_print_options (&opts); |
6424 | ||
4a64f543 MS |
6425 | /* Compute the number of rows in the table, as well as the size |
6426 | required for address fields. */ | |
7f3b0473 AC |
6427 | nr_printable_breakpoints = 0; |
6428 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6429 | { |
6430 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6431 | if (filter && !filter (b)) | |
6432 | continue; | |
6433 | ||
6434 | /* If we have an "args" string, it is a list of breakpoints to | |
6435 | accept. Skip the others. */ | |
6436 | if (args != NULL && *args != '\0') | |
6437 | { | |
6438 | if (allflag && parse_and_eval_long (args) != b->number) | |
6439 | continue; | |
6440 | if (!allflag && !number_is_in_list (args, b->number)) | |
6441 | continue; | |
6442 | } | |
269b11a2 | 6443 | |
e5a67952 MS |
6444 | if (allflag || user_breakpoint_p (b)) |
6445 | { | |
6446 | int addr_bit, type_len; | |
a6d9a66e | 6447 | |
e5a67952 MS |
6448 | addr_bit = breakpoint_address_bits (b); |
6449 | if (addr_bit > print_address_bits) | |
6450 | print_address_bits = addr_bit; | |
269b11a2 | 6451 | |
e5a67952 MS |
6452 | type_len = strlen (bptype_string (b->type)); |
6453 | if (type_len > print_type_col_width) | |
6454 | print_type_col_width = type_len; | |
6455 | ||
6456 | nr_printable_breakpoints++; | |
6457 | } | |
6458 | } | |
7f3b0473 | 6459 | |
4a2b031d TT |
6460 | { |
6461 | ui_out_emit_table table_emitter (uiout, | |
6462 | opts.addressprint ? 6 : 5, | |
6463 | nr_printable_breakpoints, | |
6464 | "BreakpointTable"); | |
6465 | ||
6466 | if (nr_printable_breakpoints > 0) | |
6467 | annotate_breakpoints_headers (); | |
6468 | if (nr_printable_breakpoints > 0) | |
6469 | annotate_field (0); | |
6470 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6471 | if (nr_printable_breakpoints > 0) | |
6472 | annotate_field (1); | |
6473 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6474 | if (nr_printable_breakpoints > 0) | |
6475 | annotate_field (2); | |
6476 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6477 | if (nr_printable_breakpoints > 0) | |
6478 | annotate_field (3); | |
6479 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6480 | if (opts.addressprint) | |
6481 | { | |
6482 | if (nr_printable_breakpoints > 0) | |
6483 | annotate_field (4); | |
6484 | if (print_address_bits <= 32) | |
6485 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6486 | else | |
6487 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6488 | } | |
6489 | if (nr_printable_breakpoints > 0) | |
6490 | annotate_field (5); | |
6491 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6492 | uiout->table_body (); | |
6493 | if (nr_printable_breakpoints > 0) | |
6494 | annotate_breakpoints_table (); | |
6495 | ||
6496 | ALL_BREAKPOINTS (b) | |
6497 | { | |
6498 | QUIT; | |
6499 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6500 | if (filter && !filter (b)) | |
6501 | continue; | |
e5a67952 | 6502 | |
4a2b031d TT |
6503 | /* If we have an "args" string, it is a list of breakpoints to |
6504 | accept. Skip the others. */ | |
e5a67952 | 6505 | |
4a2b031d TT |
6506 | if (args != NULL && *args != '\0') |
6507 | { | |
6508 | if (allflag) /* maintenance info breakpoint */ | |
6509 | { | |
6510 | if (parse_and_eval_long (args) != b->number) | |
6511 | continue; | |
6512 | } | |
6513 | else /* all others */ | |
6514 | { | |
6515 | if (!number_is_in_list (args, b->number)) | |
6516 | continue; | |
6517 | } | |
6518 | } | |
6519 | /* We only print out user settable breakpoints unless the | |
6520 | allflag is set. */ | |
6521 | if (allflag || user_breakpoint_p (b)) | |
6522 | print_one_breakpoint (b, &last_loc, allflag); | |
6523 | } | |
6524 | } | |
698384cd | 6525 | |
7f3b0473 | 6526 | if (nr_printable_breakpoints == 0) |
c906108c | 6527 | { |
4a64f543 MS |
6528 | /* If there's a filter, let the caller decide how to report |
6529 | empty list. */ | |
d77f58be SS |
6530 | if (!filter) |
6531 | { | |
e5a67952 | 6532 | if (args == NULL || *args == '\0') |
112e8700 | 6533 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6534 | else |
112e8700 | 6535 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
e5a67952 | 6536 | args); |
d77f58be | 6537 | } |
c906108c SS |
6538 | } |
6539 | else | |
c4093a6a | 6540 | { |
a6d9a66e UW |
6541 | if (last_loc && !server_command) |
6542 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6543 | } |
c906108c | 6544 | |
4a64f543 | 6545 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6546 | there have been breakpoints? */ |
c906108c | 6547 | annotate_breakpoints_table_end (); |
d77f58be SS |
6548 | |
6549 | return nr_printable_breakpoints; | |
c906108c SS |
6550 | } |
6551 | ||
ad443146 SS |
6552 | /* Display the value of default-collect in a way that is generally |
6553 | compatible with the breakpoint list. */ | |
6554 | ||
6555 | static void | |
6556 | default_collect_info (void) | |
6557 | { | |
79a45e25 PA |
6558 | struct ui_out *uiout = current_uiout; |
6559 | ||
ad443146 SS |
6560 | /* If it has no value (which is frequently the case), say nothing; a |
6561 | message like "No default-collect." gets in user's face when it's | |
6562 | not wanted. */ | |
6563 | if (!*default_collect) | |
6564 | return; | |
6565 | ||
6566 | /* The following phrase lines up nicely with per-tracepoint collect | |
6567 | actions. */ | |
112e8700 SM |
6568 | uiout->text ("default collect "); |
6569 | uiout->field_string ("default-collect", default_collect); | |
6570 | uiout->text (" \n"); | |
ad443146 SS |
6571 | } |
6572 | ||
c906108c | 6573 | static void |
0b39b52e | 6574 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6575 | { |
e5a67952 | 6576 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6577 | |
6578 | default_collect_info (); | |
d77f58be SS |
6579 | } |
6580 | ||
6581 | static void | |
1d12d88f | 6582 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6583 | { |
e5a67952 | 6584 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6585 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6586 | |
6587 | if (num_printed == 0) | |
6588 | { | |
e5a67952 | 6589 | if (args == NULL || *args == '\0') |
112e8700 | 6590 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6591 | else |
112e8700 | 6592 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6593 | } |
c906108c SS |
6594 | } |
6595 | ||
7a292a7a | 6596 | static void |
4495129a | 6597 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6598 | { |
e5a67952 | 6599 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6600 | |
6601 | default_collect_info (); | |
c906108c SS |
6602 | } |
6603 | ||
0d381245 | 6604 | static int |
714835d5 | 6605 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6606 | struct program_space *pspace, |
714835d5 | 6607 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6608 | { |
6609 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6610 | |
0d381245 VP |
6611 | for (; bl; bl = bl->next) |
6612 | { | |
6c95b8df PA |
6613 | if (bl->pspace == pspace |
6614 | && bl->address == pc | |
0d381245 VP |
6615 | && (!overlay_debugging || bl->section == section)) |
6616 | return 1; | |
6617 | } | |
6618 | return 0; | |
6619 | } | |
6620 | ||
672f9b60 | 6621 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6622 | concerns with logical breakpoints, so we match program spaces, not |
6623 | address spaces. */ | |
c906108c SS |
6624 | |
6625 | static void | |
6c95b8df PA |
6626 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6627 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6628 | struct obj_section *section, int thread) |
c906108c | 6629 | { |
52f0bd74 AC |
6630 | int others = 0; |
6631 | struct breakpoint *b; | |
c906108c SS |
6632 | |
6633 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6634 | others += (user_breakpoint_p (b) |
6635 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6636 | if (others > 0) |
6637 | { | |
a3f17187 AC |
6638 | if (others == 1) |
6639 | printf_filtered (_("Note: breakpoint ")); | |
6640 | else /* if (others == ???) */ | |
6641 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6642 | ALL_BREAKPOINTS (b) |
672f9b60 | 6643 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6644 | { |
6645 | others--; | |
6646 | printf_filtered ("%d", b->number); | |
6647 | if (b->thread == -1 && thread != -1) | |
6648 | printf_filtered (" (all threads)"); | |
6649 | else if (b->thread != -1) | |
6650 | printf_filtered (" (thread %d)", b->thread); | |
6651 | printf_filtered ("%s%s ", | |
059fb39f | 6652 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6653 | || b->enable_state == bp_call_disabled) |
0d381245 | 6654 | ? " (disabled)" |
0d381245 VP |
6655 | : ""), |
6656 | (others > 1) ? "," | |
6657 | : ((others == 1) ? " and" : "")); | |
6658 | } | |
a3f17187 | 6659 | printf_filtered (_("also set at pc ")); |
2636d81d | 6660 | fputs_styled (paddress (gdbarch, pc), address_style.style (), gdb_stdout); |
c906108c SS |
6661 | printf_filtered (".\n"); |
6662 | } | |
6663 | } | |
6664 | \f | |
c906108c | 6665 | |
cb1e4e32 PA |
6666 | /* Return true iff it is meaningful to use the address member of LOC. |
6667 | For some breakpoint types, the locations' address members are | |
6668 | irrelevant and it makes no sense to attempt to compare them to | |
6669 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6670 | |
cb1e4e32 PA |
6671 | More specifically, software watchpoints and catchpoints that are |
6672 | not backed by breakpoints always have a zero valued location | |
6673 | address and we don't want to mark breakpoints of any of these types | |
6674 | to be a duplicate of an actual breakpoint location at address | |
6675 | zero. */ | |
e4f237da | 6676 | |
cb1e4e32 PA |
6677 | static bool |
6678 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6679 | { |
cb1e4e32 | 6680 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6681 | } |
6682 | ||
6683 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6684 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6685 | ||
6686 | static int | |
4a64f543 MS |
6687 | watchpoint_locations_match (struct bp_location *loc1, |
6688 | struct bp_location *loc2) | |
2d134ed3 | 6689 | { |
3a5c3e22 PA |
6690 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6691 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6692 | ||
6693 | /* Both of them must exist. */ | |
6694 | gdb_assert (w1 != NULL); | |
6695 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6696 | |
4a64f543 MS |
6697 | /* If the target can evaluate the condition expression in hardware, |
6698 | then we we need to insert both watchpoints even if they are at | |
6699 | the same place. Otherwise the watchpoint will only trigger when | |
6700 | the condition of whichever watchpoint was inserted evaluates to | |
6701 | true, not giving a chance for GDB to check the condition of the | |
6702 | other watchpoint. */ | |
3a5c3e22 | 6703 | if ((w1->cond_exp |
4a64f543 MS |
6704 | && target_can_accel_watchpoint_condition (loc1->address, |
6705 | loc1->length, | |
0cf6dd15 | 6706 | loc1->watchpoint_type, |
4d01a485 | 6707 | w1->cond_exp.get ())) |
3a5c3e22 | 6708 | || (w2->cond_exp |
4a64f543 MS |
6709 | && target_can_accel_watchpoint_condition (loc2->address, |
6710 | loc2->length, | |
0cf6dd15 | 6711 | loc2->watchpoint_type, |
4d01a485 | 6712 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6713 | return 0; |
6714 | ||
85d721b8 PA |
6715 | /* Note that this checks the owner's type, not the location's. In |
6716 | case the target does not support read watchpoints, but does | |
6717 | support access watchpoints, we'll have bp_read_watchpoint | |
6718 | watchpoints with hw_access locations. Those should be considered | |
6719 | duplicates of hw_read locations. The hw_read locations will | |
6720 | become hw_access locations later. */ | |
2d134ed3 PA |
6721 | return (loc1->owner->type == loc2->owner->type |
6722 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6723 | && loc1->address == loc2->address | |
6724 | && loc1->length == loc2->length); | |
e4f237da KB |
6725 | } |
6726 | ||
31e77af2 | 6727 | /* See breakpoint.h. */ |
6c95b8df | 6728 | |
31e77af2 | 6729 | int |
accd0bcd YQ |
6730 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6731 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6732 | { |
f5656ead | 6733 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6734 | || aspace1 == aspace2) |
6735 | && addr1 == addr2); | |
6736 | } | |
6737 | ||
f1310107 TJB |
6738 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6739 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6740 | matches ASPACE2. On targets that have global breakpoints, the address | |
6741 | space doesn't really matter. */ | |
6742 | ||
6743 | static int | |
accd0bcd YQ |
6744 | breakpoint_address_match_range (const address_space *aspace1, |
6745 | CORE_ADDR addr1, | |
6746 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6747 | CORE_ADDR addr2) |
6748 | { | |
f5656ead | 6749 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6750 | || aspace1 == aspace2) |
6751 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6752 | } | |
6753 | ||
6754 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6755 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6756 | matches the breakpoint's address space. On targets that have global | |
6757 | breakpoints, the address space doesn't really matter. */ | |
6758 | ||
6759 | static int | |
6760 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6761 | const address_space *aspace, |
f1310107 TJB |
6762 | CORE_ADDR addr) |
6763 | { | |
6764 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6765 | aspace, addr) | |
6766 | || (bl->length | |
6767 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6768 | bl->address, bl->length, | |
6769 | aspace, addr))); | |
6770 | } | |
6771 | ||
d35ae833 PA |
6772 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6773 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6774 | match happens only if ASPACE matches the breakpoint's address | |
6775 | space. On targets that have global breakpoints, the address space | |
6776 | doesn't really matter. */ | |
6777 | ||
6778 | static int | |
6779 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6780 | const address_space *aspace, |
d35ae833 PA |
6781 | CORE_ADDR addr, int len) |
6782 | { | |
6783 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6784 | || bl->pspace->aspace == aspace) | |
6785 | { | |
6786 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6787 | ||
6788 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6789 | return 1; | |
6790 | } | |
6791 | return 0; | |
6792 | } | |
6793 | ||
1e4d1764 YQ |
6794 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6795 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6796 | true, otherwise returns false. */ | |
6797 | ||
6798 | static int | |
6799 | tracepoint_locations_match (struct bp_location *loc1, | |
6800 | struct bp_location *loc2) | |
6801 | { | |
6802 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6803 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6804 | locations at the same address of different tracepoints are regarded as | |
6805 | different locations. */ | |
6806 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6807 | else | |
6808 | return 0; | |
6809 | } | |
6810 | ||
2d134ed3 | 6811 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 PA |
6812 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
6813 | the same location. */ | |
2d134ed3 PA |
6814 | |
6815 | static int | |
4a64f543 MS |
6816 | breakpoint_locations_match (struct bp_location *loc1, |
6817 | struct bp_location *loc2) | |
2d134ed3 | 6818 | { |
2bdf28a0 JK |
6819 | int hw_point1, hw_point2; |
6820 | ||
6821 | /* Both of them must not be in moribund_locations. */ | |
6822 | gdb_assert (loc1->owner != NULL); | |
6823 | gdb_assert (loc2->owner != NULL); | |
6824 | ||
6825 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6826 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6827 | |
6828 | if (hw_point1 != hw_point2) | |
6829 | return 0; | |
6830 | else if (hw_point1) | |
6831 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6832 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6833 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6834 | else |
f1310107 TJB |
6835 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6836 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6837 | loc2->pspace->aspace, loc2->address) | |
6838 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6839 | } |
6840 | ||
76897487 KB |
6841 | static void |
6842 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6843 | int bnum, int have_bnum) | |
6844 | { | |
f63fbe86 MS |
6845 | /* The longest string possibly returned by hex_string_custom |
6846 | is 50 chars. These must be at least that big for safety. */ | |
6847 | char astr1[64]; | |
6848 | char astr2[64]; | |
76897487 | 6849 | |
bb599908 PH |
6850 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6851 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6852 | if (have_bnum) |
8a3fe4f8 | 6853 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6854 | bnum, astr1, astr2); |
6855 | else | |
8a3fe4f8 | 6856 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6857 | } |
6858 | ||
4a64f543 MS |
6859 | /* Adjust a breakpoint's address to account for architectural |
6860 | constraints on breakpoint placement. Return the adjusted address. | |
6861 | Note: Very few targets require this kind of adjustment. For most | |
6862 | targets, this function is simply the identity function. */ | |
76897487 KB |
6863 | |
6864 | static CORE_ADDR | |
a6d9a66e UW |
6865 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6866 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6867 | { |
a0de8c21 YQ |
6868 | if (bptype == bp_watchpoint |
6869 | || bptype == bp_hardware_watchpoint | |
6870 | || bptype == bp_read_watchpoint | |
6871 | || bptype == bp_access_watchpoint | |
6872 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6873 | { |
6874 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6875 | have their addresses modified. */ | |
6876 | return bpaddr; | |
6877 | } | |
7c16b83e PA |
6878 | else if (bptype == bp_single_step) |
6879 | { | |
6880 | /* Single-step breakpoints should not have their addresses | |
6881 | modified. If there's any architectural constrain that | |
6882 | applies to this address, then it should have already been | |
6883 | taken into account when the breakpoint was created in the | |
6884 | first place. If we didn't do this, stepping through e.g., | |
6885 | Thumb-2 IT blocks would break. */ | |
6886 | return bpaddr; | |
6887 | } | |
76897487 KB |
6888 | else |
6889 | { | |
a0de8c21 YQ |
6890 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6891 | ||
6892 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6893 | { | |
6894 | /* Some targets have architectural constraints on the placement | |
6895 | of breakpoint instructions. Obtain the adjusted address. */ | |
6896 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6897 | } | |
76897487 | 6898 | |
a0de8c21 | 6899 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6900 | |
6901 | /* An adjusted breakpoint address can significantly alter | |
6902 | a user's expectations. Print a warning if an adjustment | |
6903 | is required. */ | |
6904 | if (adjusted_bpaddr != bpaddr) | |
6905 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6906 | ||
6907 | return adjusted_bpaddr; | |
6908 | } | |
6909 | } | |
6910 | ||
cb1e4e32 PA |
6911 | static bp_loc_type |
6912 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 6913 | { |
cb1e4e32 | 6914 | switch (type) |
e049a4b5 DJ |
6915 | { |
6916 | case bp_breakpoint: | |
7c16b83e | 6917 | case bp_single_step: |
e049a4b5 DJ |
6918 | case bp_until: |
6919 | case bp_finish: | |
6920 | case bp_longjmp: | |
6921 | case bp_longjmp_resume: | |
e2e4d78b | 6922 | case bp_longjmp_call_dummy: |
186c406b TT |
6923 | case bp_exception: |
6924 | case bp_exception_resume: | |
e049a4b5 | 6925 | case bp_step_resume: |
2c03e5be | 6926 | case bp_hp_step_resume: |
e049a4b5 DJ |
6927 | case bp_watchpoint_scope: |
6928 | case bp_call_dummy: | |
aa7d318d | 6929 | case bp_std_terminate: |
e049a4b5 DJ |
6930 | case bp_shlib_event: |
6931 | case bp_thread_event: | |
6932 | case bp_overlay_event: | |
4efc6507 | 6933 | case bp_jit_event: |
0fd8e87f | 6934 | case bp_longjmp_master: |
aa7d318d | 6935 | case bp_std_terminate_master: |
186c406b | 6936 | case bp_exception_master: |
0e30163f JK |
6937 | case bp_gnu_ifunc_resolver: |
6938 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6939 | case bp_dprintf: |
cb1e4e32 | 6940 | return bp_loc_software_breakpoint; |
e049a4b5 | 6941 | case bp_hardware_breakpoint: |
cb1e4e32 | 6942 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
6943 | case bp_hardware_watchpoint: |
6944 | case bp_read_watchpoint: | |
6945 | case bp_access_watchpoint: | |
cb1e4e32 | 6946 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 6947 | case bp_watchpoint: |
ce78b96d | 6948 | case bp_catchpoint: |
15c3d785 PA |
6949 | case bp_tracepoint: |
6950 | case bp_fast_tracepoint: | |
0fb4aa4b | 6951 | case bp_static_tracepoint: |
cb1e4e32 | 6952 | return bp_loc_other; |
e049a4b5 | 6953 | default: |
e2e0b3e5 | 6954 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 6955 | } |
cb1e4e32 PA |
6956 | } |
6957 | ||
6958 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
6959 | { | |
6960 | this->owner = owner; | |
6961 | this->cond_bytecode = NULL; | |
6962 | this->shlib_disabled = 0; | |
6963 | this->enabled = 1; | |
6964 | ||
6965 | this->loc_type = type; | |
e049a4b5 | 6966 | |
cb1e4e32 PA |
6967 | if (this->loc_type == bp_loc_software_breakpoint |
6968 | || this->loc_type == bp_loc_hardware_breakpoint) | |
6969 | mark_breakpoint_location_modified (this); | |
6970 | ||
6971 | this->refc = 1; | |
6972 | } | |
6973 | ||
6974 | bp_location::bp_location (breakpoint *owner) | |
6975 | : bp_location::bp_location (owner, | |
6976 | bp_location_from_bp_type (owner->type)) | |
6977 | { | |
28010a5d PA |
6978 | } |
6979 | ||
6980 | /* Allocate a struct bp_location. */ | |
6981 | ||
6982 | static struct bp_location * | |
6983 | allocate_bp_location (struct breakpoint *bpt) | |
6984 | { | |
348d480f PA |
6985 | return bpt->ops->allocate_location (bpt); |
6986 | } | |
7cc221ef | 6987 | |
f431efe5 PA |
6988 | static void |
6989 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6990 | { |
4d01a485 | 6991 | delete loc; |
fe3f5fa8 VP |
6992 | } |
6993 | ||
f431efe5 PA |
6994 | /* Increment reference count. */ |
6995 | ||
6996 | static void | |
6997 | incref_bp_location (struct bp_location *bl) | |
6998 | { | |
6999 | ++bl->refc; | |
7000 | } | |
7001 | ||
7002 | /* Decrement reference count. If the reference count reaches 0, | |
7003 | destroy the bp_location. Sets *BLP to NULL. */ | |
7004 | ||
7005 | static void | |
7006 | decref_bp_location (struct bp_location **blp) | |
7007 | { | |
0807b50c PA |
7008 | gdb_assert ((*blp)->refc > 0); |
7009 | ||
f431efe5 PA |
7010 | if (--(*blp)->refc == 0) |
7011 | free_bp_location (*blp); | |
7012 | *blp = NULL; | |
7013 | } | |
7014 | ||
346774a9 | 7015 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7016 | |
b270e6f9 TT |
7017 | static breakpoint * |
7018 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7019 | { |
346774a9 | 7020 | struct breakpoint *b1; |
b270e6f9 | 7021 | struct breakpoint *result = b.get (); |
c906108c | 7022 | |
346774a9 PA |
7023 | /* Add this breakpoint to the end of the chain so that a list of |
7024 | breakpoints will come out in order of increasing numbers. */ | |
7025 | ||
7026 | b1 = breakpoint_chain; | |
7027 | if (b1 == 0) | |
b270e6f9 | 7028 | breakpoint_chain = b.release (); |
346774a9 PA |
7029 | else |
7030 | { | |
7031 | while (b1->next) | |
7032 | b1 = b1->next; | |
b270e6f9 | 7033 | b1->next = b.release (); |
346774a9 | 7034 | } |
b270e6f9 TT |
7035 | |
7036 | return result; | |
346774a9 PA |
7037 | } |
7038 | ||
7039 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7040 | ||
7041 | static void | |
7042 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7043 | struct gdbarch *gdbarch, | |
28010a5d | 7044 | enum bptype bptype, |
c0a91b2b | 7045 | const struct breakpoint_ops *ops) |
346774a9 | 7046 | { |
348d480f PA |
7047 | gdb_assert (ops != NULL); |
7048 | ||
28010a5d | 7049 | b->ops = ops; |
4d28f7a8 | 7050 | b->type = bptype; |
a6d9a66e | 7051 | b->gdbarch = gdbarch; |
c906108c SS |
7052 | b->language = current_language->la_language; |
7053 | b->input_radix = input_radix; | |
d0fb5eae | 7054 | b->related_breakpoint = b; |
346774a9 PA |
7055 | } |
7056 | ||
7057 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7058 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7059 | |
7060 | static struct breakpoint * | |
7061 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7062 | enum bptype bptype, |
c0a91b2b | 7063 | const struct breakpoint_ops *ops) |
346774a9 | 7064 | { |
3b0871f4 | 7065 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7066 | |
3b0871f4 | 7067 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7068 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7069 | } |
7070 | ||
0ba852ab | 7071 | /* Initialize loc->function_name. */ |
0e30163f | 7072 | |
0d381245 | 7073 | static void |
0ba852ab | 7074 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7075 | { |
2bdf28a0 JK |
7076 | gdb_assert (loc->owner != NULL); |
7077 | ||
0d381245 | 7078 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7079 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7080 | || is_tracepoint (loc->owner)) |
0d381245 | 7081 | { |
2c02bd72 | 7082 | const char *function_name; |
0e30163f | 7083 | |
3467ec66 | 7084 | if (loc->msymbol != NULL |
f50776aa | 7085 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7086 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7087 | { |
7088 | struct breakpoint *b = loc->owner; | |
7089 | ||
3467ec66 PA |
7090 | function_name = MSYMBOL_LINKAGE_NAME (loc->msymbol); |
7091 | ||
7092 | if (b->type == bp_breakpoint && b->loc == loc | |
7093 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7094 | { |
7095 | /* Create only the whole new breakpoint of this type but do not | |
7096 | mess more complicated breakpoints with multiple locations. */ | |
7097 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7098 | /* Remember the resolver's address for use by the return |
7099 | breakpoint. */ | |
3467ec66 | 7100 | loc->related_address = loc->address; |
0e30163f JK |
7101 | } |
7102 | } | |
3467ec66 PA |
7103 | else |
7104 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7105 | |
2c02bd72 DE |
7106 | if (function_name) |
7107 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7108 | } |
7109 | } | |
7110 | ||
a6d9a66e | 7111 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7112 | struct gdbarch * |
a6d9a66e UW |
7113 | get_sal_arch (struct symtab_and_line sal) |
7114 | { | |
7115 | if (sal.section) | |
7116 | return get_objfile_arch (sal.section->objfile); | |
7117 | if (sal.symtab) | |
eb822aa6 | 7118 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7119 | |
7120 | return NULL; | |
7121 | } | |
7122 | ||
346774a9 PA |
7123 | /* Low level routine for partially initializing a breakpoint of type |
7124 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7125 | file name, and line number are provided by SAL. |
0d381245 VP |
7126 | |
7127 | It is expected that the caller will complete the initialization of | |
7128 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7129 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7130 | |
346774a9 PA |
7131 | static void |
7132 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7133 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7134 | const struct breakpoint_ops *ops) |
0d381245 | 7135 | { |
28010a5d | 7136 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7137 | |
3742cc8b | 7138 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7139 | |
6c95b8df PA |
7140 | if (bptype != bp_catchpoint) |
7141 | gdb_assert (sal.pspace != NULL); | |
7142 | ||
f8eba3c6 TT |
7143 | /* Store the program space that was used to set the breakpoint, |
7144 | except for ordinary breakpoints, which are independent of the | |
7145 | program space. */ | |
7146 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7147 | b->pspace = sal.pspace; | |
346774a9 | 7148 | } |
c906108c | 7149 | |
346774a9 PA |
7150 | /* set_raw_breakpoint is a low level routine for allocating and |
7151 | partially initializing a breakpoint of type BPTYPE. The newly | |
7152 | created breakpoint's address, section, source file name, and line | |
7153 | number are provided by SAL. The newly created and partially | |
7154 | initialized breakpoint is added to the breakpoint chain and | |
7155 | is also returned as the value of this function. | |
7156 | ||
7157 | It is expected that the caller will complete the initialization of | |
7158 | the newly created breakpoint struct as well as output any status | |
7159 | information regarding the creation of a new breakpoint. In | |
7160 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7161 | number! Care should be taken to not allow an error to occur | |
7162 | prior to completing the initialization of the breakpoint. If this | |
7163 | should happen, a bogus breakpoint will be left on the chain. */ | |
7164 | ||
7165 | struct breakpoint * | |
7166 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7167 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7168 | const struct breakpoint_ops *ops) |
346774a9 | 7169 | { |
3b0871f4 | 7170 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7171 | |
3b0871f4 | 7172 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7173 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7174 | } |
7175 | ||
53a5351d | 7176 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7177 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7178 | initiated the operation. */ | |
c906108c SS |
7179 | |
7180 | void | |
186c406b | 7181 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7182 | { |
35df4500 | 7183 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7184 | int thread = tp->global_num; |
0fd8e87f UW |
7185 | |
7186 | /* To avoid having to rescan all objfile symbols at every step, | |
7187 | we maintain a list of continually-inserted but always disabled | |
7188 | longjmp "master" breakpoints. Here, we simply create momentary | |
7189 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7190 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7191 | if (b->pspace == current_program_space |
186c406b TT |
7192 | && (b->type == bp_longjmp_master |
7193 | || b->type == bp_exception_master)) | |
0fd8e87f | 7194 | { |
06edf0c0 PA |
7195 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7196 | struct breakpoint *clone; | |
cc59ec59 | 7197 | |
e2e4d78b JK |
7198 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7199 | after their removal. */ | |
06edf0c0 | 7200 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7201 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7202 | clone->thread = thread; |
7203 | } | |
186c406b TT |
7204 | |
7205 | tp->initiating_frame = frame; | |
c906108c SS |
7206 | } |
7207 | ||
611c83ae | 7208 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7209 | void |
611c83ae | 7210 | delete_longjmp_breakpoint (int thread) |
c906108c | 7211 | { |
35df4500 | 7212 | struct breakpoint *b, *b_tmp; |
c906108c | 7213 | |
35df4500 | 7214 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7215 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7216 | { |
7217 | if (b->thread == thread) | |
7218 | delete_breakpoint (b); | |
7219 | } | |
c906108c SS |
7220 | } |
7221 | ||
f59f708a PA |
7222 | void |
7223 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7224 | { | |
7225 | struct breakpoint *b, *b_tmp; | |
7226 | ||
7227 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7228 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7229 | { | |
7230 | if (b->thread == thread) | |
7231 | b->disposition = disp_del_at_next_stop; | |
7232 | } | |
7233 | } | |
7234 | ||
e2e4d78b JK |
7235 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7236 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7237 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7238 | breakpoints. */ | |
7239 | ||
7240 | struct breakpoint * | |
7241 | set_longjmp_breakpoint_for_call_dummy (void) | |
7242 | { | |
7243 | struct breakpoint *b, *retval = NULL; | |
7244 | ||
7245 | ALL_BREAKPOINTS (b) | |
7246 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7247 | { | |
7248 | struct breakpoint *new_b; | |
7249 | ||
7250 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7251 | &momentary_breakpoint_ops, |
7252 | 1); | |
00431a78 | 7253 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7254 | |
7255 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7256 | ||
7257 | gdb_assert (new_b->related_breakpoint == new_b); | |
7258 | if (retval == NULL) | |
7259 | retval = new_b; | |
7260 | new_b->related_breakpoint = retval; | |
7261 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7262 | retval = retval->related_breakpoint; | |
7263 | retval->related_breakpoint = new_b; | |
7264 | } | |
7265 | ||
7266 | return retval; | |
7267 | } | |
7268 | ||
7269 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7270 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7271 | stack. |
7272 | ||
7273 | You should call this function only at places where it is safe to currently | |
7274 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7275 | frames. */ | |
7276 | ||
7277 | void | |
b67a2c6f | 7278 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7279 | { |
7280 | struct breakpoint *b, *b_tmp; | |
7281 | ||
7282 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7283 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7284 | { |
7285 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7286 | ||
7287 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7288 | dummy_b = dummy_b->related_breakpoint; | |
7289 | if (dummy_b->type != bp_call_dummy | |
7290 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7291 | continue; | |
7292 | ||
00431a78 | 7293 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7294 | |
7295 | while (b->related_breakpoint != b) | |
7296 | { | |
7297 | if (b_tmp == b->related_breakpoint) | |
7298 | b_tmp = b->related_breakpoint->next; | |
7299 | delete_breakpoint (b->related_breakpoint); | |
7300 | } | |
7301 | delete_breakpoint (b); | |
7302 | } | |
7303 | } | |
7304 | ||
1900040c MS |
7305 | void |
7306 | enable_overlay_breakpoints (void) | |
7307 | { | |
52f0bd74 | 7308 | struct breakpoint *b; |
1900040c MS |
7309 | |
7310 | ALL_BREAKPOINTS (b) | |
7311 | if (b->type == bp_overlay_event) | |
7312 | { | |
7313 | b->enable_state = bp_enabled; | |
44702360 | 7314 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7315 | overlay_events_enabled = 1; |
1900040c MS |
7316 | } |
7317 | } | |
7318 | ||
7319 | void | |
7320 | disable_overlay_breakpoints (void) | |
7321 | { | |
52f0bd74 | 7322 | struct breakpoint *b; |
1900040c MS |
7323 | |
7324 | ALL_BREAKPOINTS (b) | |
7325 | if (b->type == bp_overlay_event) | |
7326 | { | |
7327 | b->enable_state = bp_disabled; | |
44702360 | 7328 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7329 | overlay_events_enabled = 0; |
1900040c MS |
7330 | } |
7331 | } | |
7332 | ||
aa7d318d TT |
7333 | /* Set an active std::terminate breakpoint for each std::terminate |
7334 | master breakpoint. */ | |
7335 | void | |
7336 | set_std_terminate_breakpoint (void) | |
7337 | { | |
35df4500 | 7338 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7339 | |
35df4500 | 7340 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7341 | if (b->pspace == current_program_space |
7342 | && b->type == bp_std_terminate_master) | |
7343 | { | |
06edf0c0 | 7344 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7345 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7346 | } |
7347 | } | |
7348 | ||
7349 | /* Delete all the std::terminate breakpoints. */ | |
7350 | void | |
7351 | delete_std_terminate_breakpoint (void) | |
7352 | { | |
35df4500 | 7353 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7354 | |
35df4500 | 7355 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7356 | if (b->type == bp_std_terminate) |
7357 | delete_breakpoint (b); | |
7358 | } | |
7359 | ||
c4093a6a | 7360 | struct breakpoint * |
a6d9a66e | 7361 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7362 | { |
7363 | struct breakpoint *b; | |
c4093a6a | 7364 | |
06edf0c0 PA |
7365 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7366 | &internal_breakpoint_ops); | |
7367 | ||
b5de0fa7 | 7368 | b->enable_state = bp_enabled; |
f00aae0f | 7369 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7370 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7371 | |
44702360 | 7372 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7373 | |
c4093a6a JM |
7374 | return b; |
7375 | } | |
7376 | ||
0101ce28 JJ |
7377 | struct lang_and_radix |
7378 | { | |
7379 | enum language lang; | |
7380 | int radix; | |
7381 | }; | |
7382 | ||
4efc6507 DE |
7383 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7384 | ||
7385 | struct breakpoint * | |
7386 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7387 | { | |
2a7f3dff PA |
7388 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7389 | &internal_breakpoint_ops); | |
4efc6507 | 7390 | } |
0101ce28 | 7391 | |
03673fc7 PP |
7392 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7393 | ||
7394 | void | |
7395 | remove_jit_event_breakpoints (void) | |
7396 | { | |
7397 | struct breakpoint *b, *b_tmp; | |
7398 | ||
7399 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7400 | if (b->type == bp_jit_event | |
7401 | && b->loc->pspace == current_program_space) | |
7402 | delete_breakpoint (b); | |
7403 | } | |
7404 | ||
cae688ec JJ |
7405 | void |
7406 | remove_solib_event_breakpoints (void) | |
7407 | { | |
35df4500 | 7408 | struct breakpoint *b, *b_tmp; |
cae688ec | 7409 | |
35df4500 | 7410 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7411 | if (b->type == bp_shlib_event |
7412 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7413 | delete_breakpoint (b); |
7414 | } | |
7415 | ||
f37f681c PA |
7416 | /* See breakpoint.h. */ |
7417 | ||
7418 | void | |
7419 | remove_solib_event_breakpoints_at_next_stop (void) | |
7420 | { | |
7421 | struct breakpoint *b, *b_tmp; | |
7422 | ||
7423 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7424 | if (b->type == bp_shlib_event | |
7425 | && b->loc->pspace == current_program_space) | |
7426 | b->disposition = disp_del_at_next_stop; | |
7427 | } | |
7428 | ||
04086b45 PA |
7429 | /* Helper for create_solib_event_breakpoint / |
7430 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7431 | INSERT_MODE to pass through to update_global_location_list. */ | |
7432 | ||
7433 | static struct breakpoint * | |
7434 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7435 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7436 | { |
7437 | struct breakpoint *b; | |
7438 | ||
06edf0c0 PA |
7439 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7440 | &internal_breakpoint_ops); | |
04086b45 | 7441 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7442 | return b; |
7443 | } | |
7444 | ||
04086b45 PA |
7445 | struct breakpoint * |
7446 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7447 | { | |
7448 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7449 | } | |
7450 | ||
f37f681c PA |
7451 | /* See breakpoint.h. */ |
7452 | ||
7453 | struct breakpoint * | |
7454 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7455 | { | |
7456 | struct breakpoint *b; | |
7457 | ||
04086b45 PA |
7458 | /* Explicitly tell update_global_location_list to insert |
7459 | locations. */ | |
7460 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7461 | if (!b->loc->inserted) |
7462 | { | |
7463 | delete_breakpoint (b); | |
7464 | return NULL; | |
7465 | } | |
7466 | return b; | |
7467 | } | |
7468 | ||
cae688ec JJ |
7469 | /* Disable any breakpoints that are on code in shared libraries. Only |
7470 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7471 | ||
7472 | void | |
cb851954 | 7473 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7474 | { |
876fa593 | 7475 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7476 | |
876fa593 | 7477 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7478 | { |
2bdf28a0 | 7479 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7480 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7481 | |
4a64f543 MS |
7482 | /* We apply the check to all breakpoints, including disabled for |
7483 | those with loc->duplicate set. This is so that when breakpoint | |
7484 | becomes enabled, or the duplicate is removed, gdb will try to | |
7485 | insert all breakpoints. If we don't set shlib_disabled here, | |
7486 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7487 | if (((b->type == bp_breakpoint) |
508ccb1f | 7488 | || (b->type == bp_jit_event) |
1042e4c0 | 7489 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7490 | || (is_tracepoint (b))) |
6c95b8df | 7491 | && loc->pspace == current_program_space |
0d381245 | 7492 | && !loc->shlib_disabled |
6c95b8df | 7493 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7494 | ) |
0d381245 VP |
7495 | { |
7496 | loc->shlib_disabled = 1; | |
7497 | } | |
cae688ec JJ |
7498 | } |
7499 | } | |
7500 | ||
63644780 NB |
7501 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7502 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7503 | disabled ones can just stay disabled. */ | |
84acb35a | 7504 | |
75149521 | 7505 | static void |
84acb35a JJ |
7506 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7507 | { | |
876fa593 | 7508 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7509 | int disabled_shlib_breaks = 0; |
7510 | ||
876fa593 | 7511 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7512 | { |
2bdf28a0 | 7513 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7514 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7515 | |
1e4d1764 | 7516 | if (solib->pspace == loc->pspace |
e2dd7057 | 7517 | && !loc->shlib_disabled |
1e4d1764 YQ |
7518 | && (((b->type == bp_breakpoint |
7519 | || b->type == bp_jit_event | |
7520 | || b->type == bp_hardware_breakpoint) | |
7521 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7522 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7523 | || is_tracepoint (b)) | |
e2dd7057 | 7524 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7525 | { |
e2dd7057 PP |
7526 | loc->shlib_disabled = 1; |
7527 | /* At this point, we cannot rely on remove_breakpoint | |
7528 | succeeding so we must mark the breakpoint as not inserted | |
7529 | to prevent future errors occurring in remove_breakpoints. */ | |
7530 | loc->inserted = 0; | |
8d3788bd VP |
7531 | |
7532 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7533 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7534 | |
e2dd7057 PP |
7535 | if (!disabled_shlib_breaks) |
7536 | { | |
223ffa71 | 7537 | target_terminal::ours_for_output (); |
3e43a32a MS |
7538 | warning (_("Temporarily disabling breakpoints " |
7539 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7540 | solib->so_name); |
84acb35a | 7541 | } |
e2dd7057 | 7542 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7543 | } |
7544 | } | |
84acb35a JJ |
7545 | } |
7546 | ||
63644780 NB |
7547 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7548 | notification of free_objfile. Only apply to enabled breakpoints, | |
7549 | disabled ones can just stay disabled. */ | |
7550 | ||
7551 | static void | |
7552 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7553 | { | |
7554 | struct breakpoint *b; | |
7555 | ||
7556 | if (objfile == NULL) | |
7557 | return; | |
7558 | ||
d03de421 PA |
7559 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7560 | managed by the user with add-symbol-file/remove-symbol-file. | |
7561 | Similarly to how breakpoints in shared libraries are handled in | |
7562 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7563 | shlib_disabled so they end up uninserted on the next global |
7564 | location list update. Shared libraries not loaded by the user | |
7565 | aren't handled here -- they're already handled in | |
7566 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7567 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7568 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7569 | main objfile). */ | |
7570 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7571 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7572 | return; |
7573 | ||
7574 | ALL_BREAKPOINTS (b) | |
7575 | { | |
7576 | struct bp_location *loc; | |
7577 | int bp_modified = 0; | |
7578 | ||
7579 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7580 | continue; | |
7581 | ||
7582 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7583 | { | |
7584 | CORE_ADDR loc_addr = loc->address; | |
7585 | ||
7586 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7587 | && loc->loc_type != bp_loc_software_breakpoint) | |
7588 | continue; | |
7589 | ||
7590 | if (loc->shlib_disabled != 0) | |
7591 | continue; | |
7592 | ||
7593 | if (objfile->pspace != loc->pspace) | |
7594 | continue; | |
7595 | ||
7596 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7597 | && loc->loc_type != bp_loc_software_breakpoint) | |
7598 | continue; | |
7599 | ||
7600 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7601 | { | |
7602 | loc->shlib_disabled = 1; | |
08351840 PA |
7603 | /* At this point, we don't know whether the object was |
7604 | unmapped from the inferior or not, so leave the | |
7605 | inserted flag alone. We'll handle failure to | |
7606 | uninsert quietly, in case the object was indeed | |
7607 | unmapped. */ | |
63644780 NB |
7608 | |
7609 | mark_breakpoint_location_modified (loc); | |
7610 | ||
7611 | bp_modified = 1; | |
7612 | } | |
7613 | } | |
7614 | ||
7615 | if (bp_modified) | |
76727919 | 7616 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7617 | } |
7618 | } | |
7619 | ||
ce78b96d JB |
7620 | /* FORK & VFORK catchpoints. */ |
7621 | ||
e29a4733 | 7622 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7623 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7624 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7625 | |
c1fc2657 | 7626 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7627 | { |
e29a4733 PA |
7628 | /* Process id of a child process whose forking triggered this |
7629 | catchpoint. This field is only valid immediately after this | |
7630 | catchpoint has triggered. */ | |
7631 | ptid_t forked_inferior_pid; | |
7632 | }; | |
7633 | ||
4a64f543 MS |
7634 | /* Implement the "insert" breakpoint_ops method for fork |
7635 | catchpoints. */ | |
ce78b96d | 7636 | |
77b06cd7 TJB |
7637 | static int |
7638 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7639 | { |
e99b03dc | 7640 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7641 | } |
7642 | ||
4a64f543 MS |
7643 | /* Implement the "remove" breakpoint_ops method for fork |
7644 | catchpoints. */ | |
ce78b96d JB |
7645 | |
7646 | static int | |
73971819 | 7647 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7648 | { |
e99b03dc | 7649 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7650 | } |
7651 | ||
7652 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7653 | catchpoints. */ | |
7654 | ||
7655 | static int | |
f1310107 | 7656 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7657 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7658 | const struct target_waitstatus *ws) |
ce78b96d | 7659 | { |
e29a4733 PA |
7660 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7661 | ||
f90263c1 TT |
7662 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7663 | return 0; | |
7664 | ||
7665 | c->forked_inferior_pid = ws->value.related_pid; | |
7666 | return 1; | |
ce78b96d JB |
7667 | } |
7668 | ||
4a64f543 MS |
7669 | /* Implement the "print_it" breakpoint_ops method for fork |
7670 | catchpoints. */ | |
ce78b96d JB |
7671 | |
7672 | static enum print_stop_action | |
348d480f | 7673 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7674 | { |
36dfb11c | 7675 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7676 | struct breakpoint *b = bs->breakpoint_at; |
7677 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7678 | |
ce78b96d | 7679 | annotate_catchpoint (b->number); |
f303dbd6 | 7680 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7681 | if (b->disposition == disp_del) |
112e8700 | 7682 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7683 | else |
112e8700 SM |
7684 | uiout->text ("Catchpoint "); |
7685 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7686 | { |
112e8700 SM |
7687 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7688 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7689 | } |
112e8700 SM |
7690 | uiout->field_int ("bkptno", b->number); |
7691 | uiout->text (" (forked process "); | |
e99b03dc | 7692 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7693 | uiout->text ("), "); |
ce78b96d JB |
7694 | return PRINT_SRC_AND_LOC; |
7695 | } | |
7696 | ||
4a64f543 MS |
7697 | /* Implement the "print_one" breakpoint_ops method for fork |
7698 | catchpoints. */ | |
ce78b96d JB |
7699 | |
7700 | static void | |
a6d9a66e | 7701 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7702 | { |
e29a4733 | 7703 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7704 | struct value_print_options opts; |
79a45e25 | 7705 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7706 | |
7707 | get_user_print_options (&opts); | |
7708 | ||
4a64f543 MS |
7709 | /* Field 4, the address, is omitted (which makes the columns not |
7710 | line up too nicely with the headers, but the effect is relatively | |
7711 | readable). */ | |
79a45b7d | 7712 | if (opts.addressprint) |
112e8700 | 7713 | uiout->field_skip ("addr"); |
ce78b96d | 7714 | annotate_field (5); |
112e8700 | 7715 | uiout->text ("fork"); |
d7e15655 | 7716 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7717 | { |
112e8700 | 7718 | uiout->text (", process "); |
e99b03dc | 7719 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7720 | uiout->spaces (1); |
ce78b96d | 7721 | } |
8ac3646f | 7722 | |
112e8700 SM |
7723 | if (uiout->is_mi_like_p ()) |
7724 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7725 | } |
7726 | ||
7727 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7728 | catchpoints. */ | |
7729 | ||
7730 | static void | |
7731 | print_mention_catch_fork (struct breakpoint *b) | |
7732 | { | |
7733 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7734 | } | |
7735 | ||
6149aea9 PA |
7736 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7737 | catchpoints. */ | |
7738 | ||
7739 | static void | |
7740 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7741 | { | |
7742 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7743 | print_recreate_thread (b, fp); |
6149aea9 PA |
7744 | } |
7745 | ||
ce78b96d JB |
7746 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7747 | ||
2060206e | 7748 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7749 | |
4a64f543 MS |
7750 | /* Implement the "insert" breakpoint_ops method for vfork |
7751 | catchpoints. */ | |
ce78b96d | 7752 | |
77b06cd7 TJB |
7753 | static int |
7754 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7755 | { |
e99b03dc | 7756 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7757 | } |
7758 | ||
4a64f543 MS |
7759 | /* Implement the "remove" breakpoint_ops method for vfork |
7760 | catchpoints. */ | |
ce78b96d JB |
7761 | |
7762 | static int | |
73971819 | 7763 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7764 | { |
e99b03dc | 7765 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7766 | } |
7767 | ||
7768 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7769 | catchpoints. */ | |
7770 | ||
7771 | static int | |
f1310107 | 7772 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7773 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7774 | const struct target_waitstatus *ws) |
ce78b96d | 7775 | { |
e29a4733 PA |
7776 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7777 | ||
f90263c1 TT |
7778 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7779 | return 0; | |
7780 | ||
7781 | c->forked_inferior_pid = ws->value.related_pid; | |
7782 | return 1; | |
ce78b96d JB |
7783 | } |
7784 | ||
4a64f543 MS |
7785 | /* Implement the "print_it" breakpoint_ops method for vfork |
7786 | catchpoints. */ | |
ce78b96d JB |
7787 | |
7788 | static enum print_stop_action | |
348d480f | 7789 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7790 | { |
36dfb11c | 7791 | struct ui_out *uiout = current_uiout; |
348d480f | 7792 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7793 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7794 | ||
ce78b96d | 7795 | annotate_catchpoint (b->number); |
f303dbd6 | 7796 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7797 | if (b->disposition == disp_del) |
112e8700 | 7798 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7799 | else |
112e8700 SM |
7800 | uiout->text ("Catchpoint "); |
7801 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7802 | { |
112e8700 SM |
7803 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7804 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7805 | } |
112e8700 SM |
7806 | uiout->field_int ("bkptno", b->number); |
7807 | uiout->text (" (vforked process "); | |
e99b03dc | 7808 | uiout->field_int ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7809 | uiout->text ("), "); |
ce78b96d JB |
7810 | return PRINT_SRC_AND_LOC; |
7811 | } | |
7812 | ||
4a64f543 MS |
7813 | /* Implement the "print_one" breakpoint_ops method for vfork |
7814 | catchpoints. */ | |
ce78b96d JB |
7815 | |
7816 | static void | |
a6d9a66e | 7817 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7818 | { |
e29a4733 | 7819 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7820 | struct value_print_options opts; |
79a45e25 | 7821 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7822 | |
7823 | get_user_print_options (&opts); | |
4a64f543 MS |
7824 | /* Field 4, the address, is omitted (which makes the columns not |
7825 | line up too nicely with the headers, but the effect is relatively | |
7826 | readable). */ | |
79a45b7d | 7827 | if (opts.addressprint) |
112e8700 | 7828 | uiout->field_skip ("addr"); |
ce78b96d | 7829 | annotate_field (5); |
112e8700 | 7830 | uiout->text ("vfork"); |
d7e15655 | 7831 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7832 | { |
112e8700 | 7833 | uiout->text (", process "); |
e99b03dc | 7834 | uiout->field_int ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7835 | uiout->spaces (1); |
ce78b96d | 7836 | } |
8ac3646f | 7837 | |
112e8700 SM |
7838 | if (uiout->is_mi_like_p ()) |
7839 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7840 | } |
7841 | ||
7842 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7843 | catchpoints. */ | |
7844 | ||
7845 | static void | |
7846 | print_mention_catch_vfork (struct breakpoint *b) | |
7847 | { | |
7848 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7849 | } | |
7850 | ||
6149aea9 PA |
7851 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7852 | catchpoints. */ | |
7853 | ||
7854 | static void | |
7855 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7856 | { | |
7857 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7858 | print_recreate_thread (b, fp); |
6149aea9 PA |
7859 | } |
7860 | ||
ce78b96d JB |
7861 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7862 | ||
2060206e | 7863 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7864 | |
edcc5120 | 7865 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7866 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7867 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7868 | ||
c1fc2657 | 7869 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7870 | { |
c1fc2657 | 7871 | ~solib_catchpoint () override; |
edcc5120 TT |
7872 | |
7873 | /* True for "catch load", false for "catch unload". */ | |
7874 | unsigned char is_load; | |
7875 | ||
7876 | /* Regular expression to match, if any. COMPILED is only valid when | |
7877 | REGEX is non-NULL. */ | |
7878 | char *regex; | |
2d7cc5c7 | 7879 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7880 | }; |
7881 | ||
c1fc2657 | 7882 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7883 | { |
c1fc2657 | 7884 | xfree (this->regex); |
edcc5120 TT |
7885 | } |
7886 | ||
7887 | static int | |
7888 | insert_catch_solib (struct bp_location *ignore) | |
7889 | { | |
7890 | return 0; | |
7891 | } | |
7892 | ||
7893 | static int | |
73971819 | 7894 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7895 | { |
7896 | return 0; | |
7897 | } | |
7898 | ||
7899 | static int | |
7900 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7901 | const address_space *aspace, |
edcc5120 TT |
7902 | CORE_ADDR bp_addr, |
7903 | const struct target_waitstatus *ws) | |
7904 | { | |
7905 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7906 | struct breakpoint *other; | |
7907 | ||
7908 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7909 | return 1; | |
7910 | ||
7911 | ALL_BREAKPOINTS (other) | |
7912 | { | |
7913 | struct bp_location *other_bl; | |
7914 | ||
7915 | if (other == bl->owner) | |
7916 | continue; | |
7917 | ||
7918 | if (other->type != bp_shlib_event) | |
7919 | continue; | |
7920 | ||
c1fc2657 | 7921 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7922 | continue; |
7923 | ||
7924 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7925 | { | |
7926 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7927 | return 1; | |
7928 | } | |
7929 | } | |
7930 | ||
7931 | return 0; | |
7932 | } | |
7933 | ||
7934 | static void | |
7935 | check_status_catch_solib (struct bpstats *bs) | |
7936 | { | |
7937 | struct solib_catchpoint *self | |
7938 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7939 | |
7940 | if (self->is_load) | |
7941 | { | |
52941706 | 7942 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7943 | { |
7944 | if (!self->regex | |
2d7cc5c7 | 7945 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7946 | return; |
7947 | } | |
7948 | } | |
7949 | else | |
7950 | { | |
6fb16ce6 | 7951 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7952 | { |
7953 | if (!self->regex | |
6fb16ce6 | 7954 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
7955 | return; |
7956 | } | |
7957 | } | |
7958 | ||
7959 | bs->stop = 0; | |
7960 | bs->print_it = print_it_noop; | |
7961 | } | |
7962 | ||
7963 | static enum print_stop_action | |
7964 | print_it_catch_solib (bpstat bs) | |
7965 | { | |
7966 | struct breakpoint *b = bs->breakpoint_at; | |
7967 | struct ui_out *uiout = current_uiout; | |
7968 | ||
7969 | annotate_catchpoint (b->number); | |
f303dbd6 | 7970 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 7971 | if (b->disposition == disp_del) |
112e8700 | 7972 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 7973 | else |
112e8700 SM |
7974 | uiout->text ("Catchpoint "); |
7975 | uiout->field_int ("bkptno", b->number); | |
7976 | uiout->text ("\n"); | |
7977 | if (uiout->is_mi_like_p ()) | |
7978 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
7979 | print_solib_event (1); |
7980 | return PRINT_SRC_AND_LOC; | |
7981 | } | |
7982 | ||
7983 | static void | |
7984 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7985 | { | |
7986 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7987 | struct value_print_options opts; | |
7988 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
7989 | |
7990 | get_user_print_options (&opts); | |
7991 | /* Field 4, the address, is omitted (which makes the columns not | |
7992 | line up too nicely with the headers, but the effect is relatively | |
7993 | readable). */ | |
7994 | if (opts.addressprint) | |
7995 | { | |
7996 | annotate_field (4); | |
112e8700 | 7997 | uiout->field_skip ("addr"); |
edcc5120 TT |
7998 | } |
7999 | ||
528e1572 | 8000 | std::string msg; |
edcc5120 TT |
8001 | annotate_field (5); |
8002 | if (self->is_load) | |
8003 | { | |
8004 | if (self->regex) | |
528e1572 | 8005 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8006 | else |
528e1572 | 8007 | msg = _("load of library"); |
edcc5120 TT |
8008 | } |
8009 | else | |
8010 | { | |
8011 | if (self->regex) | |
528e1572 | 8012 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8013 | else |
528e1572 | 8014 | msg = _("unload of library"); |
edcc5120 | 8015 | } |
112e8700 | 8016 | uiout->field_string ("what", msg); |
8ac3646f | 8017 | |
112e8700 SM |
8018 | if (uiout->is_mi_like_p ()) |
8019 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8020 | } |
8021 | ||
8022 | static void | |
8023 | print_mention_catch_solib (struct breakpoint *b) | |
8024 | { | |
8025 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8026 | ||
8027 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8028 | self->is_load ? "load" : "unload"); | |
8029 | } | |
8030 | ||
8031 | static void | |
8032 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8033 | { | |
8034 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8035 | ||
8036 | fprintf_unfiltered (fp, "%s %s", | |
8037 | b->disposition == disp_del ? "tcatch" : "catch", | |
8038 | self->is_load ? "load" : "unload"); | |
8039 | if (self->regex) | |
8040 | fprintf_unfiltered (fp, " %s", self->regex); | |
8041 | fprintf_unfiltered (fp, "\n"); | |
8042 | } | |
8043 | ||
8044 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8045 | ||
91985142 MG |
8046 | /* Shared helper function (MI and CLI) for creating and installing |
8047 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8048 | the events to be caught are load events, otherwise they are | |
8049 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8050 | temporary one. If ENABLED is non-zero the catchpoint is | |
8051 | created in an enabled state. */ | |
edcc5120 | 8052 | |
91985142 | 8053 | void |
a121b7c1 | 8054 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8055 | { |
edcc5120 | 8056 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8057 | |
edcc5120 TT |
8058 | if (!arg) |
8059 | arg = ""; | |
f1735a53 | 8060 | arg = skip_spaces (arg); |
edcc5120 | 8061 | |
36bd8eaa | 8062 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8063 | |
8064 | if (*arg != '\0') | |
8065 | { | |
2d7cc5c7 PA |
8066 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8067 | _("Invalid regexp"))); | |
edcc5120 TT |
8068 | c->regex = xstrdup (arg); |
8069 | } | |
8070 | ||
8071 | c->is_load = is_load; | |
36bd8eaa | 8072 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8073 | &catch_solib_breakpoint_ops); |
8074 | ||
c1fc2657 | 8075 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8076 | |
b270e6f9 | 8077 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8078 | } |
8079 | ||
91985142 MG |
8080 | /* A helper function that does all the work for "catch load" and |
8081 | "catch unload". */ | |
8082 | ||
8083 | static void | |
eb4c3f4a | 8084 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8085 | struct cmd_list_element *command) |
8086 | { | |
8087 | int tempflag; | |
8088 | const int enabled = 1; | |
8089 | ||
8090 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8091 | ||
8092 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8093 | } | |
8094 | ||
edcc5120 | 8095 | static void |
eb4c3f4a | 8096 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8097 | struct cmd_list_element *command) |
8098 | { | |
8099 | catch_load_or_unload (arg, from_tty, 1, command); | |
8100 | } | |
8101 | ||
8102 | static void | |
eb4c3f4a | 8103 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8104 | struct cmd_list_element *command) |
8105 | { | |
8106 | catch_load_or_unload (arg, from_tty, 0, command); | |
8107 | } | |
8108 | ||
346774a9 PA |
8109 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8110 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8111 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8112 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8113 | |
ab04a2af | 8114 | void |
346774a9 PA |
8115 | init_catchpoint (struct breakpoint *b, |
8116 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8117 | const char *cond_string, |
c0a91b2b | 8118 | const struct breakpoint_ops *ops) |
c906108c | 8119 | { |
51abb421 | 8120 | symtab_and_line sal; |
6c95b8df | 8121 | sal.pspace = current_program_space; |
c5aa993b | 8122 | |
28010a5d | 8123 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8124 | |
1b36a34b | 8125 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8126 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8127 | } |
8128 | ||
28010a5d | 8129 | void |
b270e6f9 | 8130 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8131 | { |
b270e6f9 | 8132 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8133 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8134 | if (is_tracepoint (b)) |
8135 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8136 | if (!internal) |
8137 | mention (b); | |
76727919 | 8138 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8139 | |
8140 | if (update_gll) | |
44702360 | 8141 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8142 | } |
8143 | ||
9b70b993 | 8144 | static void |
a6d9a66e | 8145 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8146 | int tempflag, const char *cond_string, |
c0a91b2b | 8147 | const struct breakpoint_ops *ops) |
c906108c | 8148 | { |
b270e6f9 | 8149 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8150 | |
b270e6f9 | 8151 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8152 | |
8153 | c->forked_inferior_pid = null_ptid; | |
8154 | ||
b270e6f9 | 8155 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8156 | } |
8157 | ||
fe798b75 JB |
8158 | /* Exec catchpoints. */ |
8159 | ||
b4d90040 | 8160 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8161 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8162 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8163 | ||
c1fc2657 | 8164 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8165 | { |
c1fc2657 | 8166 | ~exec_catchpoint () override; |
b4d90040 PA |
8167 | |
8168 | /* Filename of a program whose exec triggered this catchpoint. | |
8169 | This field is only valid immediately after this catchpoint has | |
8170 | triggered. */ | |
8171 | char *exec_pathname; | |
8172 | }; | |
8173 | ||
c1fc2657 | 8174 | /* Exec catchpoint destructor. */ |
b4d90040 | 8175 | |
c1fc2657 | 8176 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8177 | { |
c1fc2657 | 8178 | xfree (this->exec_pathname); |
b4d90040 PA |
8179 | } |
8180 | ||
77b06cd7 TJB |
8181 | static int |
8182 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8183 | { |
e99b03dc | 8184 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8185 | } |
c906108c | 8186 | |
fe798b75 | 8187 | static int |
73971819 | 8188 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8189 | { |
e99b03dc | 8190 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8191 | } |
c906108c | 8192 | |
fe798b75 | 8193 | static int |
f1310107 | 8194 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8195 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8196 | const struct target_waitstatus *ws) |
fe798b75 | 8197 | { |
b4d90040 PA |
8198 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8199 | ||
f90263c1 TT |
8200 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8201 | return 0; | |
8202 | ||
8203 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8204 | return 1; | |
fe798b75 | 8205 | } |
c906108c | 8206 | |
fe798b75 | 8207 | static enum print_stop_action |
348d480f | 8208 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8209 | { |
36dfb11c | 8210 | struct ui_out *uiout = current_uiout; |
348d480f | 8211 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8212 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8213 | ||
fe798b75 | 8214 | annotate_catchpoint (b->number); |
f303dbd6 | 8215 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8216 | if (b->disposition == disp_del) |
112e8700 | 8217 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8218 | else |
112e8700 SM |
8219 | uiout->text ("Catchpoint "); |
8220 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8221 | { |
112e8700 SM |
8222 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8223 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8224 | } |
112e8700 SM |
8225 | uiout->field_int ("bkptno", b->number); |
8226 | uiout->text (" (exec'd "); | |
8227 | uiout->field_string ("new-exec", c->exec_pathname); | |
8228 | uiout->text ("), "); | |
36dfb11c | 8229 | |
fe798b75 | 8230 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8231 | } |
8232 | ||
fe798b75 | 8233 | static void |
a6d9a66e | 8234 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8235 | { |
b4d90040 | 8236 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8237 | struct value_print_options opts; |
79a45e25 | 8238 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8239 | |
8240 | get_user_print_options (&opts); | |
8241 | ||
8242 | /* Field 4, the address, is omitted (which makes the columns | |
8243 | not line up too nicely with the headers, but the effect | |
8244 | is relatively readable). */ | |
8245 | if (opts.addressprint) | |
112e8700 | 8246 | uiout->field_skip ("addr"); |
fe798b75 | 8247 | annotate_field (5); |
112e8700 | 8248 | uiout->text ("exec"); |
b4d90040 | 8249 | if (c->exec_pathname != NULL) |
fe798b75 | 8250 | { |
112e8700 SM |
8251 | uiout->text (", program \""); |
8252 | uiout->field_string ("what", c->exec_pathname); | |
8253 | uiout->text ("\" "); | |
fe798b75 | 8254 | } |
8ac3646f | 8255 | |
112e8700 SM |
8256 | if (uiout->is_mi_like_p ()) |
8257 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8258 | } |
8259 | ||
8260 | static void | |
8261 | print_mention_catch_exec (struct breakpoint *b) | |
8262 | { | |
8263 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8264 | } | |
8265 | ||
6149aea9 PA |
8266 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8267 | catchpoints. */ | |
8268 | ||
8269 | static void | |
8270 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8271 | { | |
8272 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8273 | print_recreate_thread (b, fp); |
6149aea9 PA |
8274 | } |
8275 | ||
2060206e | 8276 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8277 | |
c906108c | 8278 | static int |
fba45db2 | 8279 | hw_breakpoint_used_count (void) |
c906108c | 8280 | { |
c906108c | 8281 | int i = 0; |
f1310107 TJB |
8282 | struct breakpoint *b; |
8283 | struct bp_location *bl; | |
c906108c SS |
8284 | |
8285 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8286 | { |
d6b74ac4 | 8287 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8288 | for (bl = b->loc; bl; bl = bl->next) |
8289 | { | |
8290 | /* Special types of hardware breakpoints may use more than | |
8291 | one register. */ | |
348d480f | 8292 | i += b->ops->resources_needed (bl); |
f1310107 | 8293 | } |
c5aa993b | 8294 | } |
c906108c SS |
8295 | |
8296 | return i; | |
8297 | } | |
8298 | ||
a1398e0c PA |
8299 | /* Returns the resources B would use if it were a hardware |
8300 | watchpoint. */ | |
8301 | ||
c906108c | 8302 | static int |
a1398e0c | 8303 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8304 | { |
c906108c | 8305 | int i = 0; |
e09342b5 | 8306 | struct bp_location *bl; |
c906108c | 8307 | |
a1398e0c PA |
8308 | if (!breakpoint_enabled (b)) |
8309 | return 0; | |
8310 | ||
8311 | for (bl = b->loc; bl; bl = bl->next) | |
8312 | { | |
8313 | /* Special types of hardware watchpoints may use more than | |
8314 | one register. */ | |
8315 | i += b->ops->resources_needed (bl); | |
8316 | } | |
8317 | ||
8318 | return i; | |
8319 | } | |
8320 | ||
8321 | /* Returns the sum the used resources of all hardware watchpoints of | |
8322 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8323 | the sum of the used resources of all hardware watchpoints of other | |
8324 | types _not_ TYPE. */ | |
8325 | ||
8326 | static int | |
8327 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8328 | enum bptype type, int *other_type_used) | |
8329 | { | |
8330 | int i = 0; | |
8331 | struct breakpoint *b; | |
8332 | ||
c906108c SS |
8333 | *other_type_used = 0; |
8334 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8335 | { |
a1398e0c PA |
8336 | if (b == except) |
8337 | continue; | |
e09342b5 TJB |
8338 | if (!breakpoint_enabled (b)) |
8339 | continue; | |
8340 | ||
a1398e0c PA |
8341 | if (b->type == type) |
8342 | i += hw_watchpoint_use_count (b); | |
8343 | else if (is_hardware_watchpoint (b)) | |
8344 | *other_type_used = 1; | |
e09342b5 TJB |
8345 | } |
8346 | ||
c906108c SS |
8347 | return i; |
8348 | } | |
8349 | ||
c906108c | 8350 | void |
fba45db2 | 8351 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8352 | { |
c5aa993b | 8353 | struct breakpoint *b; |
c906108c SS |
8354 | |
8355 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8356 | { |
cc60f2e3 | 8357 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8358 | { |
b5de0fa7 | 8359 | b->enable_state = bp_call_disabled; |
44702360 | 8360 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8361 | } |
8362 | } | |
c906108c SS |
8363 | } |
8364 | ||
8365 | void | |
fba45db2 | 8366 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8367 | { |
c5aa993b | 8368 | struct breakpoint *b; |
c906108c SS |
8369 | |
8370 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8371 | { |
cc60f2e3 | 8372 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8373 | { |
b5de0fa7 | 8374 | b->enable_state = bp_enabled; |
44702360 | 8375 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8376 | } |
8377 | } | |
c906108c SS |
8378 | } |
8379 | ||
8bea4e01 UW |
8380 | void |
8381 | disable_breakpoints_before_startup (void) | |
8382 | { | |
6c95b8df | 8383 | current_program_space->executing_startup = 1; |
44702360 | 8384 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8385 | } |
8386 | ||
8387 | void | |
8388 | enable_breakpoints_after_startup (void) | |
8389 | { | |
6c95b8df | 8390 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8391 | breakpoint_re_set (); |
8bea4e01 UW |
8392 | } |
8393 | ||
7c16b83e PA |
8394 | /* Create a new single-step breakpoint for thread THREAD, with no |
8395 | locations. */ | |
c906108c | 8396 | |
7c16b83e PA |
8397 | static struct breakpoint * |
8398 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8399 | { | |
b270e6f9 | 8400 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8401 | |
b270e6f9 | 8402 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8403 | &momentary_breakpoint_ops); |
8404 | ||
8405 | b->disposition = disp_donttouch; | |
8406 | b->frame_id = null_frame_id; | |
8407 | ||
8408 | b->thread = thread; | |
8409 | gdb_assert (b->thread != 0); | |
8410 | ||
b270e6f9 | 8411 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8412 | } |
8413 | ||
8414 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8415 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8416 | frame. */ | |
c906108c | 8417 | |
454dafbd | 8418 | breakpoint_up |
a6d9a66e UW |
8419 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8420 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8421 | { |
52f0bd74 | 8422 | struct breakpoint *b; |
edb3359d | 8423 | |
193facb3 JK |
8424 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8425 | tail-called one. */ | |
8426 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8427 | |
06edf0c0 | 8428 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8429 | b->enable_state = bp_enabled; |
8430 | b->disposition = disp_donttouch; | |
818dd999 | 8431 | b->frame_id = frame_id; |
c906108c | 8432 | |
00431a78 | 8433 | b->thread = inferior_thread ()->global_num; |
c906108c | 8434 | |
44702360 | 8435 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8436 | |
454dafbd | 8437 | return breakpoint_up (b); |
c906108c | 8438 | } |
611c83ae | 8439 | |
06edf0c0 | 8440 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8441 | The new breakpoint will have type TYPE, use OPS as its |
8442 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8443 | |
06edf0c0 PA |
8444 | static struct breakpoint * |
8445 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8446 | enum bptype type, | |
a1aa2221 LM |
8447 | const struct breakpoint_ops *ops, |
8448 | int loc_enabled) | |
e58b0e63 PA |
8449 | { |
8450 | struct breakpoint *copy; | |
8451 | ||
06edf0c0 | 8452 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8453 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8454 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8455 | |
a6d9a66e | 8456 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8457 | copy->loc->requested_address = orig->loc->requested_address; |
8458 | copy->loc->address = orig->loc->address; | |
8459 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8460 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8461 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8462 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8463 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8464 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8465 | copy->frame_id = orig->frame_id; |
8466 | copy->thread = orig->thread; | |
6c95b8df | 8467 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8468 | |
8469 | copy->enable_state = bp_enabled; | |
8470 | copy->disposition = disp_donttouch; | |
8471 | copy->number = internal_breakpoint_number--; | |
8472 | ||
44702360 | 8473 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8474 | return copy; |
8475 | } | |
8476 | ||
06edf0c0 PA |
8477 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8478 | ORIG is NULL. */ | |
8479 | ||
8480 | struct breakpoint * | |
8481 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8482 | { | |
8483 | /* If there's nothing to clone, then return nothing. */ | |
8484 | if (orig == NULL) | |
8485 | return NULL; | |
8486 | ||
a1aa2221 | 8487 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8488 | } |
8489 | ||
454dafbd | 8490 | breakpoint_up |
a6d9a66e UW |
8491 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8492 | enum bptype type) | |
611c83ae PA |
8493 | { |
8494 | struct symtab_and_line sal; | |
8495 | ||
8496 | sal = find_pc_line (pc, 0); | |
8497 | sal.pc = pc; | |
8498 | sal.section = find_pc_overlay (pc); | |
8499 | sal.explicit_pc = 1; | |
8500 | ||
a6d9a66e | 8501 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8502 | } |
c906108c | 8503 | \f |
c5aa993b | 8504 | |
c906108c SS |
8505 | /* Tell the user we have just set a breakpoint B. */ |
8506 | ||
8507 | static void | |
fba45db2 | 8508 | mention (struct breakpoint *b) |
c906108c | 8509 | { |
348d480f | 8510 | b->ops->print_mention (b); |
2d33446d | 8511 | current_uiout->text ("\n"); |
c906108c | 8512 | } |
c906108c | 8513 | \f |
c5aa993b | 8514 | |
1a853c52 PA |
8515 | static int bp_loc_is_permanent (struct bp_location *loc); |
8516 | ||
0d381245 | 8517 | static struct bp_location * |
39d61571 | 8518 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8519 | const struct symtab_and_line *sal) |
8520 | { | |
8521 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8522 | CORE_ADDR adjusted_address; |
8523 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8524 | ||
8525 | if (loc_gdbarch == NULL) | |
8526 | loc_gdbarch = b->gdbarch; | |
8527 | ||
8528 | /* Adjust the breakpoint's address prior to allocating a location. | |
8529 | Once we call allocate_bp_location(), that mostly uninitialized | |
8530 | location will be placed on the location chain. Adjustment of the | |
8531 | breakpoint may cause target_read_memory() to be called and we do | |
8532 | not want its scan of the location chain to find a breakpoint and | |
8533 | location that's only been partially initialized. */ | |
8534 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8535 | sal->pc, b->type); | |
0d381245 | 8536 | |
d30113d4 | 8537 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8538 | loc = allocate_bp_location (b); |
d30113d4 JK |
8539 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8540 | tmp = &((*tmp)->next)) | |
0d381245 | 8541 | ; |
d30113d4 | 8542 | loc->next = *tmp; |
0d381245 | 8543 | *tmp = loc; |
3742cc8b | 8544 | |
0d381245 | 8545 | loc->requested_address = sal->pc; |
3742cc8b | 8546 | loc->address = adjusted_address; |
6c95b8df | 8547 | loc->pspace = sal->pspace; |
935676c9 | 8548 | loc->probe.prob = sal->prob; |
729662a5 | 8549 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8550 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8551 | loc->section = sal->section; |
3742cc8b | 8552 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8553 | loc->line_number = sal->line; |
2f202fde | 8554 | loc->symtab = sal->symtab; |
4a27f119 | 8555 | loc->symbol = sal->symbol; |
3467ec66 PA |
8556 | loc->msymbol = sal->msymbol; |
8557 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8558 | |
0ba852ab | 8559 | set_breakpoint_location_function (loc); |
1a853c52 | 8560 | |
6ae88661 LM |
8561 | /* While by definition, permanent breakpoints are already present in the |
8562 | code, we don't mark the location as inserted. Normally one would expect | |
8563 | that GDB could rely on that breakpoint instruction to stop the program, | |
8564 | thus removing the need to insert its own breakpoint, except that executing | |
8565 | the breakpoint instruction can kill the target instead of reporting a | |
8566 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8567 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8568 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8569 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8570 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8571 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8572 | it manually increments the PC, thus avoiding executing the breakpoint | |
8573 | instruction.) */ | |
1a853c52 | 8574 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8575 | loc->permanent = 1; |
1a853c52 | 8576 | |
0d381245 VP |
8577 | return loc; |
8578 | } | |
514f746b AR |
8579 | \f |
8580 | ||
1cf4d951 | 8581 | /* See breakpoint.h. */ |
514f746b | 8582 | |
1cf4d951 PA |
8583 | int |
8584 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8585 | { |
8586 | int len; | |
8587 | CORE_ADDR addr; | |
1afeeb75 | 8588 | const gdb_byte *bpoint; |
514f746b AR |
8589 | gdb_byte *target_mem; |
8590 | ||
1cf4d951 PA |
8591 | addr = address; |
8592 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8593 | ||
8594 | /* Software breakpoints unsupported? */ | |
8595 | if (bpoint == NULL) | |
8596 | return 0; | |
8597 | ||
224c3ddb | 8598 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8599 | |
8600 | /* Enable the automatic memory restoration from breakpoints while | |
8601 | we read the memory. Otherwise we could say about our temporary | |
8602 | breakpoints they are permanent. */ | |
cb85b21b TT |
8603 | scoped_restore restore_memory |
8604 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8605 | |
8606 | if (target_read_memory (address, target_mem, len) == 0 | |
8607 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8608 | return 1; |
1cf4d951 | 8609 | |
cb85b21b | 8610 | return 0; |
1cf4d951 PA |
8611 | } |
8612 | ||
8613 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8614 | return 0 otherwise. */ | |
8615 | ||
8616 | static int | |
8617 | bp_loc_is_permanent (struct bp_location *loc) | |
8618 | { | |
514f746b AR |
8619 | gdb_assert (loc != NULL); |
8620 | ||
cb1e4e32 PA |
8621 | /* If we have a non-breakpoint-backed catchpoint or a software |
8622 | watchpoint, just return 0. We should not attempt to read from | |
8623 | the addresses the locations of these breakpoint types point to. | |
8624 | program_breakpoint_here_p, below, will attempt to read | |
244558af | 8625 | memory. */ |
cb1e4e32 | 8626 | if (!bl_address_is_meaningful (loc)) |
244558af LM |
8627 | return 0; |
8628 | ||
5ed8105e | 8629 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8630 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8631 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8632 | } |
8633 | ||
e7e0cddf SS |
8634 | /* Build a command list for the dprintf corresponding to the current |
8635 | settings of the dprintf style options. */ | |
8636 | ||
8637 | static void | |
8638 | update_dprintf_command_list (struct breakpoint *b) | |
8639 | { | |
8640 | char *dprintf_args = b->extra_string; | |
8641 | char *printf_line = NULL; | |
8642 | ||
8643 | if (!dprintf_args) | |
8644 | return; | |
8645 | ||
8646 | dprintf_args = skip_spaces (dprintf_args); | |
8647 | ||
8648 | /* Allow a comma, as it may have terminated a location, but don't | |
8649 | insist on it. */ | |
8650 | if (*dprintf_args == ',') | |
8651 | ++dprintf_args; | |
8652 | dprintf_args = skip_spaces (dprintf_args); | |
8653 | ||
8654 | if (*dprintf_args != '"') | |
8655 | error (_("Bad format string, missing '\"'.")); | |
8656 | ||
d3ce09f5 | 8657 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8658 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8659 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8660 | { |
8661 | if (!dprintf_function) | |
8662 | error (_("No function supplied for dprintf call")); | |
8663 | ||
8664 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8665 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8666 | dprintf_function, | |
8667 | dprintf_channel, | |
8668 | dprintf_args); | |
8669 | else | |
8670 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8671 | dprintf_function, | |
8672 | dprintf_args); | |
8673 | } | |
d3ce09f5 SS |
8674 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8675 | { | |
8676 | if (target_can_run_breakpoint_commands ()) | |
8677 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8678 | else | |
8679 | { | |
8680 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8681 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8682 | } | |
8683 | } | |
e7e0cddf SS |
8684 | else |
8685 | internal_error (__FILE__, __LINE__, | |
8686 | _("Invalid dprintf style.")); | |
8687 | ||
f28045c2 | 8688 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8689 | |
12973681 TT |
8690 | /* Manufacture a printf sequence. */ |
8691 | struct command_line *printf_cmd_line | |
8692 | = new struct command_line (simple_control, printf_line); | |
8693 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8694 | command_lines_deleter ())); | |
e7e0cddf SS |
8695 | } |
8696 | ||
8697 | /* Update all dprintf commands, making their command lists reflect | |
8698 | current style settings. */ | |
8699 | ||
8700 | static void | |
eb4c3f4a | 8701 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8702 | struct cmd_list_element *c) |
8703 | { | |
8704 | struct breakpoint *b; | |
8705 | ||
8706 | ALL_BREAKPOINTS (b) | |
8707 | { | |
8708 | if (b->type == bp_dprintf) | |
8709 | update_dprintf_command_list (b); | |
8710 | } | |
8711 | } | |
c3f6f71d | 8712 | |
f00aae0f KS |
8713 | /* Create a breakpoint with SAL as location. Use LOCATION |
8714 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8715 | as condition expression. If LOCATION is NULL then create an |
8716 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8717 | |
8718 | static void | |
d9b3f62e | 8719 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8720 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8721 | event_location_up &&location, |
e1e01040 PA |
8722 | gdb::unique_xmalloc_ptr<char> filter, |
8723 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8724 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8725 | enum bptype type, enum bpdisp disposition, |
8726 | int thread, int task, int ignore_count, | |
c0a91b2b | 8727 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8728 | int enabled, int internal, unsigned flags, |
8729 | int display_canonical) | |
018d34a4 | 8730 | { |
0d381245 | 8731 | int i; |
018d34a4 VP |
8732 | |
8733 | if (type == bp_hardware_breakpoint) | |
8734 | { | |
fbbd034e AS |
8735 | int target_resources_ok; |
8736 | ||
8737 | i = hw_breakpoint_used_count (); | |
8738 | target_resources_ok = | |
8739 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8740 | i + 1, 0); |
8741 | if (target_resources_ok == 0) | |
8742 | error (_("No hardware breakpoint support in the target.")); | |
8743 | else if (target_resources_ok < 0) | |
8744 | error (_("Hardware breakpoints used exceeds limit.")); | |
8745 | } | |
8746 | ||
6c5b2ebe | 8747 | gdb_assert (!sals.empty ()); |
6c95b8df | 8748 | |
6c5b2ebe | 8749 | for (const auto &sal : sals) |
0d381245 | 8750 | { |
0d381245 VP |
8751 | struct bp_location *loc; |
8752 | ||
8753 | if (from_tty) | |
5af949e3 UW |
8754 | { |
8755 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8756 | if (!loc_gdbarch) | |
8757 | loc_gdbarch = gdbarch; | |
8758 | ||
8759 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8760 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8761 | } |
0d381245 | 8762 | |
6c5b2ebe | 8763 | if (&sal == &sals[0]) |
0d381245 | 8764 | { |
d9b3f62e | 8765 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8766 | b->thread = thread; |
4a306c9a | 8767 | b->task = task; |
855a6e68 | 8768 | |
e1e01040 PA |
8769 | b->cond_string = cond_string.release (); |
8770 | b->extra_string = extra_string.release (); | |
0d381245 | 8771 | b->ignore_count = ignore_count; |
41447f92 | 8772 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8773 | b->disposition = disposition; |
6c95b8df | 8774 | |
44f238bb PA |
8775 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8776 | b->loc->inserted = 1; | |
8777 | ||
0fb4aa4b PA |
8778 | if (type == bp_static_tracepoint) |
8779 | { | |
d9b3f62e | 8780 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8781 | struct static_tracepoint_marker marker; |
8782 | ||
983af33b | 8783 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8784 | { |
8785 | /* We already know the marker exists, otherwise, we | |
8786 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8787 | const char *p |
8788 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8789 | const char *endp; |
0fb4aa4b | 8790 | |
f1735a53 | 8791 | p = skip_spaces (p); |
0fb4aa4b | 8792 | |
f1735a53 | 8793 | endp = skip_to_space (p); |
0fb4aa4b | 8794 | |
5d9310c4 | 8795 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8796 | |
3e43a32a MS |
8797 | printf_filtered (_("Probed static tracepoint " |
8798 | "marker \"%s\"\n"), | |
5d9310c4 | 8799 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8800 | } |
8801 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8802 | { | |
5d9310c4 | 8803 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8804 | |
3e43a32a MS |
8805 | printf_filtered (_("Probed static tracepoint " |
8806 | "marker \"%s\"\n"), | |
5d9310c4 | 8807 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8808 | } |
8809 | else | |
3e43a32a MS |
8810 | warning (_("Couldn't determine the static " |
8811 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8812 | } |
8813 | ||
0d381245 VP |
8814 | loc = b->loc; |
8815 | } | |
8816 | else | |
018d34a4 | 8817 | { |
39d61571 | 8818 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8819 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8820 | loc->inserted = 1; | |
0d381245 VP |
8821 | } |
8822 | ||
8823 | if (b->cond_string) | |
8824 | { | |
bbc13ae3 KS |
8825 | const char *arg = b->cond_string; |
8826 | ||
1bb9788d TT |
8827 | loc->cond = parse_exp_1 (&arg, loc->address, |
8828 | block_for_pc (loc->address), 0); | |
0d381245 | 8829 | if (*arg) |
588ae58c | 8830 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8831 | } |
e7e0cddf SS |
8832 | |
8833 | /* Dynamic printf requires and uses additional arguments on the | |
8834 | command line, otherwise it's an error. */ | |
8835 | if (type == bp_dprintf) | |
8836 | { | |
8837 | if (b->extra_string) | |
8838 | update_dprintf_command_list (b); | |
8839 | else | |
8840 | error (_("Format string required")); | |
8841 | } | |
8842 | else if (b->extra_string) | |
588ae58c | 8843 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8844 | } |
018d34a4 | 8845 | |
56435ebe | 8846 | b->display_canonical = display_canonical; |
f00aae0f | 8847 | if (location != NULL) |
d28cd78a | 8848 | b->location = std::move (location); |
018d34a4 | 8849 | else |
d28cd78a | 8850 | b->location = new_address_location (b->loc->address, NULL, 0); |
e1e01040 | 8851 | b->filter = filter.release (); |
d9b3f62e | 8852 | } |
018d34a4 | 8853 | |
d9b3f62e PA |
8854 | static void |
8855 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8856 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8857 | event_location_up &&location, |
e1e01040 PA |
8858 | gdb::unique_xmalloc_ptr<char> filter, |
8859 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8860 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8861 | enum bptype type, enum bpdisp disposition, |
8862 | int thread, int task, int ignore_count, | |
c0a91b2b | 8863 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8864 | int enabled, int internal, unsigned flags, |
8865 | int display_canonical) | |
d9b3f62e | 8866 | { |
a5e364af | 8867 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8868 | |
a5e364af | 8869 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8870 | sals, std::move (location), |
e1e01040 PA |
8871 | std::move (filter), |
8872 | std::move (cond_string), | |
8873 | std::move (extra_string), | |
d9b3f62e PA |
8874 | type, disposition, |
8875 | thread, task, ignore_count, | |
8876 | ops, from_tty, | |
44f238bb PA |
8877 | enabled, internal, flags, |
8878 | display_canonical); | |
d9b3f62e | 8879 | |
b270e6f9 | 8880 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8881 | } |
8882 | ||
8883 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8884 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8885 | value. COND_STRING, if not NULL, specified the condition to be | |
8886 | used for all breakpoints. Essentially the only case where | |
8887 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8888 | function. In that case, it's still not possible to specify | |
8889 | separate conditions for different overloaded functions, so | |
8890 | we take just a single condition string. | |
8891 | ||
c3f6f71d | 8892 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8893 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8894 | array contents). If the function fails (error() is called), the |
8895 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8896 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8897 | |
8898 | static void | |
8cdf0e15 | 8899 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8900 | struct linespec_result *canonical, |
e1e01040 PA |
8901 | gdb::unique_xmalloc_ptr<char> cond_string, |
8902 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8903 | enum bptype type, enum bpdisp disposition, |
8904 | int thread, int task, int ignore_count, | |
c0a91b2b | 8905 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8906 | int enabled, int internal, unsigned flags) |
c906108c | 8907 | { |
f8eba3c6 | 8908 | if (canonical->pre_expanded) |
6c5b2ebe | 8909 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8910 | |
6c5b2ebe | 8911 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8912 | { |
f00aae0f | 8913 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8914 | 'break', without arguments. */ |
ffc2605c | 8915 | event_location_up location |
f00aae0f | 8916 | = (canonical->location != NULL |
8e9e35b1 | 8917 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8918 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8919 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8920 | |
6c5b2ebe | 8921 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8922 | std::move (location), |
e1e01040 PA |
8923 | std::move (filter_string), |
8924 | std::move (cond_string), | |
8925 | std::move (extra_string), | |
e7e0cddf | 8926 | type, disposition, |
84f4c1fe | 8927 | thread, task, ignore_count, ops, |
44f238bb | 8928 | from_tty, enabled, internal, flags, |
56435ebe | 8929 | canonical->special_display); |
c3f6f71d | 8930 | } |
c3f6f71d | 8931 | } |
c906108c | 8932 | |
f00aae0f | 8933 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8934 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8935 | addresses found. LOCATION points to the end of the SAL (for |
8936 | linespec locations). | |
9998af43 TJB |
8937 | |
8938 | The array and the line spec strings are allocated on the heap, it is | |
8939 | the caller's responsibility to free them. */ | |
c906108c | 8940 | |
b9362cc7 | 8941 | static void |
f00aae0f | 8942 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8943 | struct linespec_result *canonical) |
c3f6f71d | 8944 | { |
f00aae0f KS |
8945 | struct symtab_and_line cursal; |
8946 | ||
8947 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8948 | { | |
a20714ff | 8949 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8950 | |
a20714ff | 8951 | if (spec == NULL) |
f00aae0f KS |
8952 | { |
8953 | /* The last displayed codepoint, if it's valid, is our default | |
8954 | breakpoint address. */ | |
8955 | if (last_displayed_sal_is_valid ()) | |
8956 | { | |
f00aae0f KS |
8957 | /* Set sal's pspace, pc, symtab, and line to the values |
8958 | corresponding to the last call to print_frame_info. | |
8959 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8960 | as the breakpoint line number is inappropriate otherwise. | |
8961 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8962 | symtab_and_line sal = get_last_displayed_sal (); |
8963 | CORE_ADDR pc = sal.pc; | |
8964 | ||
f00aae0f KS |
8965 | sal = find_pc_line (pc, 0); |
8966 | ||
8967 | /* "break" without arguments is equivalent to "break *PC" | |
8968 | where PC is the last displayed codepoint's address. So | |
8969 | make sure to set sal.explicit_pc to prevent GDB from | |
8970 | trying to expand the list of sals to include all other | |
8971 | instances with the same symtab and line. */ | |
8972 | sal.pc = pc; | |
8973 | sal.explicit_pc = 1; | |
8974 | ||
6c5b2ebe PA |
8975 | struct linespec_sals lsal; |
8976 | lsal.sals = {sal}; | |
f00aae0f KS |
8977 | lsal.canonical = NULL; |
8978 | ||
6c5b2ebe | 8979 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8980 | return; |
8981 | } | |
8982 | else | |
8983 | error (_("No default breakpoint address now.")); | |
c906108c | 8984 | } |
c906108c | 8985 | } |
f00aae0f KS |
8986 | |
8987 | /* Force almost all breakpoints to be in terms of the | |
8988 | current_source_symtab (which is decode_line_1's default). | |
8989 | This should produce the results we want almost all of the | |
8990 | time while leaving default_breakpoint_* alone. | |
8991 | ||
8992 | ObjC: However, don't match an Objective-C method name which | |
8993 | may have a '+' or '-' succeeded by a '['. */ | |
8994 | cursal = get_current_source_symtab_and_line (); | |
8995 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8996 | { |
a20714ff | 8997 | const char *spec = NULL; |
cc80f267 | 8998 | |
f00aae0f | 8999 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9000 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9001 | |
f00aae0f | 9002 | if (!cursal.symtab |
a20714ff PA |
9003 | || (spec != NULL |
9004 | && strchr ("+-", spec[0]) != NULL | |
9005 | && spec[1] != '[')) | |
f00aae0f | 9006 | { |
c2f4122d | 9007 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9008 | get_last_displayed_symtab (), |
9009 | get_last_displayed_line (), | |
9010 | canonical, NULL, NULL); | |
9011 | return; | |
9012 | } | |
c906108c | 9013 | } |
f00aae0f | 9014 | |
c2f4122d | 9015 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9016 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9017 | } |
c906108c | 9018 | |
c906108c | 9019 | |
c3f6f71d | 9020 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9021 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9022 | |
b9362cc7 | 9023 | static void |
6c5b2ebe | 9024 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9025 | { |
6c5b2ebe PA |
9026 | for (auto &sal : sals) |
9027 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9028 | } |
9029 | ||
7a697b8d SS |
9030 | /* Fast tracepoints may have restrictions on valid locations. For |
9031 | instance, a fast tracepoint using a jump instead of a trap will | |
9032 | likely have to overwrite more bytes than a trap would, and so can | |
9033 | only be placed where the instruction is longer than the jump, or a | |
9034 | multi-instruction sequence does not have a jump into the middle of | |
9035 | it, etc. */ | |
9036 | ||
9037 | static void | |
9038 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9039 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9040 | { |
6c5b2ebe | 9041 | for (const auto &sal : sals) |
7a697b8d | 9042 | { |
f8eba3c6 TT |
9043 | struct gdbarch *sarch; |
9044 | ||
6c5b2ebe | 9045 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9046 | /* We fall back to GDBARCH if there is no architecture |
9047 | associated with SAL. */ | |
9048 | if (sarch == NULL) | |
9049 | sarch = gdbarch; | |
281d762b TT |
9050 | std::string msg; |
9051 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9052 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9053 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9054 | } |
9055 | } | |
9056 | ||
018d34a4 VP |
9057 | /* Given TOK, a string specification of condition and thread, as |
9058 | accepted by the 'break' command, extract the condition | |
9059 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9060 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9061 | If no condition is found, *COND_STRING is set to NULL. |
9062 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9063 | |
9064 | static void | |
bbc13ae3 | 9065 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9066 | char **cond_string, int *thread, int *task, |
9067 | char **rest) | |
018d34a4 VP |
9068 | { |
9069 | *cond_string = NULL; | |
9070 | *thread = -1; | |
ed1d1739 KS |
9071 | *task = 0; |
9072 | *rest = NULL; | |
9073 | ||
018d34a4 VP |
9074 | while (tok && *tok) |
9075 | { | |
bbc13ae3 | 9076 | const char *end_tok; |
018d34a4 | 9077 | int toklen; |
bbc13ae3 KS |
9078 | const char *cond_start = NULL; |
9079 | const char *cond_end = NULL; | |
cc59ec59 | 9080 | |
f1735a53 | 9081 | tok = skip_spaces (tok); |
e7e0cddf SS |
9082 | |
9083 | if ((*tok == '"' || *tok == ',') && rest) | |
9084 | { | |
9085 | *rest = savestring (tok, strlen (tok)); | |
9086 | return; | |
9087 | } | |
9088 | ||
f1735a53 | 9089 | end_tok = skip_to_space (tok); |
d634f2de | 9090 | |
018d34a4 | 9091 | toklen = end_tok - tok; |
d634f2de | 9092 | |
018d34a4 VP |
9093 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9094 | { | |
9095 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9096 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9097 | cond_end = tok; |
d634f2de | 9098 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9099 | } |
9100 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9101 | { | |
5d5658a1 PA |
9102 | const char *tmptok; |
9103 | struct thread_info *thr; | |
d634f2de | 9104 | |
018d34a4 | 9105 | tok = end_tok + 1; |
5d5658a1 | 9106 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9107 | if (tok == tmptok) |
9108 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9109 | *thread = thr->global_num; |
bbc13ae3 | 9110 | tok = tmptok; |
018d34a4 | 9111 | } |
4a306c9a JB |
9112 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9113 | { | |
9114 | char *tmptok; | |
9115 | ||
9116 | tok = end_tok + 1; | |
bbc13ae3 | 9117 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9118 | if (tok == tmptok) |
9119 | error (_("Junk after task keyword.")); | |
9120 | if (!valid_task_id (*task)) | |
b6199126 | 9121 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9122 | tok = tmptok; |
4a306c9a | 9123 | } |
e7e0cddf SS |
9124 | else if (rest) |
9125 | { | |
9126 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9127 | return; |
e7e0cddf | 9128 | } |
018d34a4 VP |
9129 | else |
9130 | error (_("Junk at end of arguments.")); | |
9131 | } | |
9132 | } | |
9133 | ||
0fb4aa4b PA |
9134 | /* Decode a static tracepoint marker spec. */ |
9135 | ||
6c5b2ebe | 9136 | static std::vector<symtab_and_line> |
f00aae0f | 9137 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9138 | { |
f00aae0f KS |
9139 | const char *p = &(*arg_p)[3]; |
9140 | const char *endp; | |
0fb4aa4b | 9141 | |
f1735a53 | 9142 | p = skip_spaces (p); |
0fb4aa4b | 9143 | |
f1735a53 | 9144 | endp = skip_to_space (p); |
0fb4aa4b | 9145 | |
81b1e71c | 9146 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9147 | |
5d9310c4 SM |
9148 | std::vector<static_tracepoint_marker> markers |
9149 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9150 | if (markers.empty ()) | |
81b1e71c TT |
9151 | error (_("No known static tracepoint marker named %s"), |
9152 | marker_str.c_str ()); | |
0fb4aa4b | 9153 | |
6c5b2ebe | 9154 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9155 | sals.reserve (markers.size ()); |
0fb4aa4b | 9156 | |
5d9310c4 | 9157 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9158 | { |
5d9310c4 SM |
9159 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9160 | sal.pc = marker.address; | |
6c5b2ebe | 9161 | sals.push_back (sal); |
5d9310c4 | 9162 | } |
0fb4aa4b | 9163 | |
0fb4aa4b PA |
9164 | *arg_p = endp; |
9165 | return sals; | |
9166 | } | |
9167 | ||
f00aae0f | 9168 | /* See breakpoint.h. */ |
0101ce28 | 9169 | |
8cdf0e15 VP |
9170 | int |
9171 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9172 | const struct event_location *location, |
9173 | const char *cond_string, | |
9174 | int thread, const char *extra_string, | |
f00aae0f | 9175 | int parse_extra, |
0fb4aa4b | 9176 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9177 | int ignore_count, |
9178 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9179 | const struct breakpoint_ops *ops, |
44f238bb PA |
9180 | int from_tty, int enabled, int internal, |
9181 | unsigned flags) | |
c3f6f71d | 9182 | { |
7efd8fc2 | 9183 | struct linespec_result canonical; |
0101ce28 | 9184 | int pending = 0; |
4a306c9a | 9185 | int task = 0; |
86b17b60 | 9186 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9187 | |
348d480f PA |
9188 | gdb_assert (ops != NULL); |
9189 | ||
f00aae0f KS |
9190 | /* If extra_string isn't useful, set it to NULL. */ |
9191 | if (extra_string != NULL && *extra_string == '\0') | |
9192 | extra_string = NULL; | |
9193 | ||
a70b8144 | 9194 | try |
b78a6381 | 9195 | { |
f00aae0f | 9196 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9197 | } |
230d2906 | 9198 | catch (const gdb_exception_error &e) |
0101ce28 | 9199 | { |
492d29ea PA |
9200 | /* If caller is interested in rc value from parse, set |
9201 | value. */ | |
9202 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9203 | { |
05ff989b AC |
9204 | /* If pending breakpoint support is turned off, throw |
9205 | error. */ | |
fa8d40ab JJ |
9206 | |
9207 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9208 | throw; |
723a2275 VP |
9209 | |
9210 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9211 | |
05ff989b AC |
9212 | /* If pending breakpoint support is auto query and the user |
9213 | selects no, then simply return the error code. */ | |
059fb39f | 9214 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9215 | && !nquery (_("Make %s pending on future shared library load? "), |
9216 | bptype_string (type_wanted))) | |
fd9b8c24 | 9217 | return 0; |
fa8d40ab | 9218 | |
05ff989b AC |
9219 | /* At this point, either the user was queried about setting |
9220 | a pending breakpoint and selected yes, or pending | |
9221 | breakpoint behavior is on and thus a pending breakpoint | |
9222 | is defaulted on behalf of the user. */ | |
f00aae0f | 9223 | pending = 1; |
0101ce28 | 9224 | } |
492d29ea | 9225 | else |
eedc3f4f | 9226 | throw; |
0101ce28 | 9227 | } |
492d29ea | 9228 | |
6c5b2ebe | 9229 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9230 | return 0; |
c3f6f71d | 9231 | |
c3f6f71d JM |
9232 | /* Resolve all line numbers to PC's and verify that the addresses |
9233 | are ok for the target. */ | |
0101ce28 | 9234 | if (!pending) |
f8eba3c6 | 9235 | { |
6c5b2ebe PA |
9236 | for (auto &lsal : canonical.lsals) |
9237 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9238 | } |
c3f6f71d | 9239 | |
7a697b8d | 9240 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9241 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9242 | { |
6c5b2ebe PA |
9243 | for (const auto &lsal : canonical.lsals) |
9244 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9245 | } |
7a697b8d | 9246 | |
c3f6f71d JM |
9247 | /* Verify that condition can be parsed, before setting any |
9248 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9249 | breakpoint. */ |
0101ce28 | 9250 | if (!pending) |
c3f6f71d | 9251 | { |
e1e01040 PA |
9252 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9253 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9254 | ||
f00aae0f | 9255 | if (parse_extra) |
72b2ff0e | 9256 | { |
0878d0fa | 9257 | char *rest; |
e1e01040 | 9258 | char *cond; |
52d361e1 | 9259 | |
6c5b2ebe | 9260 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9261 | |
0878d0fa YQ |
9262 | /* Here we only parse 'arg' to separate condition |
9263 | from thread number, so parsing in context of first | |
9264 | sal is OK. When setting the breakpoint we'll | |
9265 | re-parse it in context of each sal. */ | |
9266 | ||
6c5b2ebe | 9267 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9268 | &cond, &thread, &task, &rest); |
9269 | cond_string_copy.reset (cond); | |
9270 | extra_string_copy.reset (rest); | |
72b2ff0e | 9271 | } |
2f069f6f | 9272 | else |
72b2ff0e | 9273 | { |
f00aae0f KS |
9274 | if (type_wanted != bp_dprintf |
9275 | && extra_string != NULL && *extra_string != '\0') | |
9276 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9277 | |
9278 | /* Create a private copy of condition string. */ | |
9279 | if (cond_string) | |
e1e01040 | 9280 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9281 | /* Create a private copy of any extra string. */ |
9282 | if (extra_string) | |
e1e01040 | 9283 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9284 | } |
0fb4aa4b | 9285 | |
52d361e1 | 9286 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9287 | std::move (cond_string_copy), |
9288 | std::move (extra_string_copy), | |
9289 | type_wanted, | |
d9b3f62e PA |
9290 | tempflag ? disp_del : disp_donttouch, |
9291 | thread, task, ignore_count, ops, | |
44f238bb | 9292 | from_tty, enabled, internal, flags); |
c906108c | 9293 | } |
0101ce28 JJ |
9294 | else |
9295 | { | |
a5e364af | 9296 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9297 | |
a5e364af | 9298 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9299 | b->location = copy_event_location (location); |
bfccc43c | 9300 | |
f00aae0f KS |
9301 | if (parse_extra) |
9302 | b->cond_string = NULL; | |
e12c7713 MK |
9303 | else |
9304 | { | |
9305 | /* Create a private copy of condition string. */ | |
e1e01040 | 9306 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9307 | b->thread = thread; |
e12c7713 | 9308 | } |
f00aae0f KS |
9309 | |
9310 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9311 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9312 | b->ignore_count = ignore_count; |
0101ce28 | 9313 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9314 | b->condition_not_parsed = 1; |
41447f92 | 9315 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9316 | if ((type_wanted != bp_breakpoint |
9317 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9318 | b->pspace = current_program_space; |
8bea4e01 | 9319 | |
b270e6f9 | 9320 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9321 | } |
9322 | ||
6c5b2ebe | 9323 | if (canonical.lsals.size () > 1) |
95a42b64 | 9324 | { |
3e43a32a MS |
9325 | warning (_("Multiple breakpoints were set.\nUse the " |
9326 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9327 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9328 | } |
9329 | ||
44702360 | 9330 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9331 | |
9332 | return 1; | |
c3f6f71d | 9333 | } |
c906108c | 9334 | |
348d480f | 9335 | /* Set a breakpoint. |
72b2ff0e VP |
9336 | ARG is a string describing breakpoint address, |
9337 | condition, and thread. | |
9338 | FLAG specifies if a breakpoint is hardware on, | |
9339 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9340 | and BP_TEMPFLAG. */ | |
348d480f | 9341 | |
98deb0da | 9342 | static void |
f2fc3015 | 9343 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9344 | { |
72b2ff0e | 9345 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9346 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9347 | ? bp_hardware_breakpoint | |
9348 | : bp_breakpoint); | |
55aa24fb | 9349 | struct breakpoint_ops *ops; |
f00aae0f | 9350 | |
ffc2605c | 9351 | event_location_up location = string_to_event_location (&arg, current_language); |
55aa24fb SDJ |
9352 | |
9353 | /* Matching breakpoints on probes. */ | |
5b56227b | 9354 | if (location != NULL |
ffc2605c | 9355 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
9356 | ops = &bkpt_probe_breakpoint_ops; |
9357 | else | |
9358 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9359 | |
8cdf0e15 | 9360 | create_breakpoint (get_current_arch (), |
ffc2605c | 9361 | location.get (), |
f00aae0f | 9362 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9363 | tempflag, type_wanted, |
8cdf0e15 VP |
9364 | 0 /* Ignore count */, |
9365 | pending_break_support, | |
55aa24fb | 9366 | ops, |
8cdf0e15 | 9367 | from_tty, |
84f4c1fe | 9368 | 1 /* enabled */, |
44f238bb PA |
9369 | 0 /* internal */, |
9370 | 0); | |
c906108c SS |
9371 | } |
9372 | ||
c906108c SS |
9373 | /* Helper function for break_command_1 and disassemble_command. */ |
9374 | ||
9375 | void | |
fba45db2 | 9376 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9377 | { |
9378 | CORE_ADDR pc; | |
9379 | ||
9380 | if (sal->pc == 0 && sal->symtab != NULL) | |
9381 | { | |
9382 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9383 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9384 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9385 | sal->pc = pc; |
6a048695 | 9386 | |
4a64f543 MS |
9387 | /* If this SAL corresponds to a breakpoint inserted using a line |
9388 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9389 | if (sal->explicit_line) |
059acae7 | 9390 | skip_prologue_sal (sal); |
c906108c SS |
9391 | } |
9392 | ||
9393 | if (sal->section == 0 && sal->symtab != NULL) | |
9394 | { | |
346d1dfe | 9395 | const struct blockvector *bv; |
3977b71f | 9396 | const struct block *b; |
c5aa993b | 9397 | struct symbol *sym; |
c906108c | 9398 | |
43f3e411 DE |
9399 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9400 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9401 | if (bv != NULL) |
9402 | { | |
7f0df278 | 9403 | sym = block_linkage_function (b); |
c906108c SS |
9404 | if (sym != NULL) |
9405 | { | |
eb822aa6 DE |
9406 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9407 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9408 | sym); | |
c906108c SS |
9409 | } |
9410 | else | |
9411 | { | |
4a64f543 MS |
9412 | /* It really is worthwhile to have the section, so we'll |
9413 | just have to look harder. This case can be executed | |
9414 | if we have line numbers but no functions (as can | |
9415 | happen in assembly source). */ | |
c906108c | 9416 | |
5ed8105e | 9417 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9418 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9419 | |
5ed8105e | 9420 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9421 | if (msym.minsym) |
efd66ac6 | 9422 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9423 | } |
9424 | } | |
9425 | } | |
9426 | } | |
9427 | ||
9428 | void | |
0b39b52e | 9429 | break_command (const char *arg, int from_tty) |
c906108c | 9430 | { |
db107f19 | 9431 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9432 | } |
9433 | ||
c906108c | 9434 | void |
0b39b52e | 9435 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9436 | { |
db107f19 | 9437 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9438 | } |
9439 | ||
c906108c | 9440 | static void |
0b39b52e | 9441 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9442 | { |
db107f19 | 9443 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9444 | } |
9445 | ||
9446 | static void | |
0b39b52e | 9447 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9448 | { |
db107f19 | 9449 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9450 | } |
9451 | ||
9452 | static void | |
ee7ddd71 | 9453 | stop_command (const char *arg, int from_tty) |
c906108c | 9454 | { |
a3f17187 | 9455 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9456 | Usage: stop in <function | address>\n\ |
a3f17187 | 9457 | stop at <line>\n")); |
c906108c SS |
9458 | } |
9459 | ||
9460 | static void | |
4495129a | 9461 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9462 | { |
9463 | int badInput = 0; | |
9464 | ||
cafb3438 | 9465 | if (arg == NULL) |
c906108c SS |
9466 | badInput = 1; |
9467 | else if (*arg != '*') | |
9468 | { | |
4495129a | 9469 | const char *argptr = arg; |
c906108c SS |
9470 | int hasColon = 0; |
9471 | ||
4a64f543 | 9472 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9473 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9474 | function/method name. */ |
c906108c | 9475 | while (*argptr && !hasColon) |
c5aa993b JM |
9476 | { |
9477 | hasColon = (*argptr == ':'); | |
9478 | argptr++; | |
9479 | } | |
c906108c SS |
9480 | |
9481 | if (hasColon) | |
c5aa993b | 9482 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9483 | else |
c5aa993b | 9484 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9485 | } |
9486 | ||
9487 | if (badInput) | |
a3f17187 | 9488 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9489 | else |
db107f19 | 9490 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9491 | } |
9492 | ||
9493 | static void | |
4495129a | 9494 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9495 | { |
9496 | int badInput = 0; | |
9497 | ||
cafb3438 | 9498 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9499 | badInput = 1; |
9500 | else | |
9501 | { | |
4495129a | 9502 | const char *argptr = arg; |
c906108c SS |
9503 | int hasColon = 0; |
9504 | ||
4a64f543 MS |
9505 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9506 | it is probably a line number. */ | |
c906108c | 9507 | while (*argptr && !hasColon) |
c5aa993b JM |
9508 | { |
9509 | hasColon = (*argptr == ':'); | |
9510 | argptr++; | |
9511 | } | |
c906108c SS |
9512 | |
9513 | if (hasColon) | |
c5aa993b | 9514 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9515 | else |
c5aa993b | 9516 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9517 | } |
9518 | ||
9519 | if (badInput) | |
65e65158 | 9520 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9521 | else |
db107f19 | 9522 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9523 | } |
9524 | ||
e7e0cddf SS |
9525 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9526 | with a prewired command list consisting of a single output command, | |
9527 | built from extra arguments supplied on the dprintf command | |
9528 | line. */ | |
9529 | ||
da821c7b | 9530 | static void |
0b39b52e | 9531 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9532 | { |
ffc2605c | 9533 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9534 | |
9535 | /* If non-NULL, ARG should have been advanced past the location; | |
9536 | the next character must be ','. */ | |
9537 | if (arg != NULL) | |
9538 | { | |
9539 | if (arg[0] != ',' || arg[1] == '\0') | |
9540 | error (_("Format string required")); | |
9541 | else | |
9542 | { | |
9543 | /* Skip the comma. */ | |
9544 | ++arg; | |
9545 | } | |
9546 | } | |
9547 | ||
e7e0cddf | 9548 | create_breakpoint (get_current_arch (), |
ffc2605c | 9549 | location.get (), |
f00aae0f | 9550 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9551 | 0, bp_dprintf, |
9552 | 0 /* Ignore count */, | |
9553 | pending_break_support, | |
9554 | &dprintf_breakpoint_ops, | |
9555 | from_tty, | |
9556 | 1 /* enabled */, | |
9557 | 0 /* internal */, | |
9558 | 0); | |
9559 | } | |
9560 | ||
d3ce09f5 | 9561 | static void |
0b39b52e | 9562 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9563 | { |
9564 | error (_("May only run agent-printf on the target")); | |
9565 | } | |
9566 | ||
f1310107 TJB |
9567 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9568 | ranged breakpoints. */ | |
9569 | ||
9570 | static int | |
9571 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9572 | const address_space *aspace, |
09ac7c10 TT |
9573 | CORE_ADDR bp_addr, |
9574 | const struct target_waitstatus *ws) | |
f1310107 | 9575 | { |
09ac7c10 | 9576 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9577 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9578 | return 0; |
9579 | ||
f1310107 TJB |
9580 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9581 | bl->length, aspace, bp_addr); | |
9582 | } | |
9583 | ||
9584 | /* Implement the "resources_needed" breakpoint_ops method for | |
9585 | ranged breakpoints. */ | |
9586 | ||
9587 | static int | |
9588 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9589 | { | |
9590 | return target_ranged_break_num_registers (); | |
9591 | } | |
9592 | ||
9593 | /* Implement the "print_it" breakpoint_ops method for | |
9594 | ranged breakpoints. */ | |
9595 | ||
9596 | static enum print_stop_action | |
348d480f | 9597 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9598 | { |
348d480f | 9599 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9600 | struct bp_location *bl = b->loc; |
79a45e25 | 9601 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9602 | |
9603 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9604 | ||
9605 | /* Ranged breakpoints have only one location. */ | |
9606 | gdb_assert (bl && bl->next == NULL); | |
9607 | ||
9608 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9609 | |
9610 | maybe_print_thread_hit_breakpoint (uiout); | |
9611 | ||
f1310107 | 9612 | if (b->disposition == disp_del) |
112e8700 | 9613 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9614 | else |
112e8700 SM |
9615 | uiout->text ("Ranged breakpoint "); |
9616 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9617 | { |
112e8700 | 9618 | uiout->field_string ("reason", |
f1310107 | 9619 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9620 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9621 | } |
112e8700 SM |
9622 | uiout->field_int ("bkptno", b->number); |
9623 | uiout->text (", "); | |
f1310107 TJB |
9624 | |
9625 | return PRINT_SRC_AND_LOC; | |
9626 | } | |
9627 | ||
9628 | /* Implement the "print_one" breakpoint_ops method for | |
9629 | ranged breakpoints. */ | |
9630 | ||
9631 | static void | |
9632 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9633 | struct bp_location **last_loc) | |
9634 | { | |
9635 | struct bp_location *bl = b->loc; | |
9636 | struct value_print_options opts; | |
79a45e25 | 9637 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9638 | |
9639 | /* Ranged breakpoints have only one location. */ | |
9640 | gdb_assert (bl && bl->next == NULL); | |
9641 | ||
9642 | get_user_print_options (&opts); | |
9643 | ||
9644 | if (opts.addressprint) | |
9645 | /* We don't print the address range here, it will be printed later | |
9646 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9647 | uiout->field_skip ("addr"); |
f1310107 TJB |
9648 | annotate_field (5); |
9649 | print_breakpoint_location (b, bl); | |
9650 | *last_loc = bl; | |
9651 | } | |
9652 | ||
9653 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9654 | ranged breakpoints. */ | |
9655 | ||
9656 | static void | |
9657 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9658 | struct ui_out *uiout) | |
9659 | { | |
9660 | CORE_ADDR address_start, address_end; | |
9661 | struct bp_location *bl = b->loc; | |
d7e74731 | 9662 | string_file stb; |
f1310107 TJB |
9663 | |
9664 | gdb_assert (bl); | |
9665 | ||
9666 | address_start = bl->address; | |
9667 | address_end = address_start + bl->length - 1; | |
9668 | ||
112e8700 | 9669 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9670 | stb.printf ("[%s, %s]", |
9671 | print_core_address (bl->gdbarch, address_start), | |
9672 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9673 | uiout->field_stream ("addr", stb); |
9674 | uiout->text ("\n"); | |
f1310107 TJB |
9675 | } |
9676 | ||
9677 | /* Implement the "print_mention" breakpoint_ops method for | |
9678 | ranged breakpoints. */ | |
9679 | ||
9680 | static void | |
9681 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9682 | { | |
9683 | struct bp_location *bl = b->loc; | |
79a45e25 | 9684 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9685 | |
9686 | gdb_assert (bl); | |
9687 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9688 | ||
2d33446d TT |
9689 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9690 | b->number, paddress (bl->gdbarch, bl->address), | |
9691 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9692 | } |
9693 | ||
9694 | /* Implement the "print_recreate" breakpoint_ops method for | |
9695 | ranged breakpoints. */ | |
9696 | ||
9697 | static void | |
9698 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9699 | { | |
f00aae0f | 9700 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9701 | event_location_to_string (b->location.get ()), |
9702 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9703 | print_recreate_thread (b, fp); |
f1310107 TJB |
9704 | } |
9705 | ||
9706 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9707 | ||
2060206e | 9708 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9709 | |
9710 | /* Find the address where the end of the breakpoint range should be | |
9711 | placed, given the SAL of the end of the range. This is so that if | |
9712 | the user provides a line number, the end of the range is set to the | |
9713 | last instruction of the given line. */ | |
9714 | ||
9715 | static CORE_ADDR | |
9716 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9717 | { | |
9718 | CORE_ADDR end; | |
9719 | ||
9720 | /* If the user provided a PC value, use it. Otherwise, | |
9721 | find the address of the end of the given location. */ | |
9722 | if (sal.explicit_pc) | |
9723 | end = sal.pc; | |
9724 | else | |
9725 | { | |
9726 | int ret; | |
9727 | CORE_ADDR start; | |
9728 | ||
9729 | ret = find_line_pc_range (sal, &start, &end); | |
9730 | if (!ret) | |
9731 | error (_("Could not find location of the end of the range.")); | |
9732 | ||
9733 | /* find_line_pc_range returns the start of the next line. */ | |
9734 | end--; | |
9735 | } | |
9736 | ||
9737 | return end; | |
9738 | } | |
9739 | ||
9740 | /* Implement the "break-range" CLI command. */ | |
9741 | ||
9742 | static void | |
0b39b52e | 9743 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9744 | { |
f2fc3015 | 9745 | const char *arg_start; |
f1310107 TJB |
9746 | struct linespec_result canonical_start, canonical_end; |
9747 | int bp_count, can_use_bp, length; | |
9748 | CORE_ADDR end; | |
9749 | struct breakpoint *b; | |
f1310107 TJB |
9750 | |
9751 | /* We don't support software ranged breakpoints. */ | |
9752 | if (target_ranged_break_num_registers () < 0) | |
9753 | error (_("This target does not support hardware ranged breakpoints.")); | |
9754 | ||
9755 | bp_count = hw_breakpoint_used_count (); | |
9756 | bp_count += target_ranged_break_num_registers (); | |
9757 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9758 | bp_count, 0); | |
9759 | if (can_use_bp < 0) | |
9760 | error (_("Hardware breakpoints used exceeds limit.")); | |
9761 | ||
f8eba3c6 | 9762 | arg = skip_spaces (arg); |
f1310107 TJB |
9763 | if (arg == NULL || arg[0] == '\0') |
9764 | error(_("No address range specified.")); | |
9765 | ||
f8eba3c6 | 9766 | arg_start = arg; |
ffc2605c TT |
9767 | event_location_up start_location = string_to_event_location (&arg, |
9768 | current_language); | |
9769 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9770 | |
9771 | if (arg[0] != ',') | |
9772 | error (_("Too few arguments.")); | |
6c5b2ebe | 9773 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9774 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9775 | |
6c5b2ebe | 9776 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9777 | |
6c5b2ebe PA |
9778 | if (canonical_start.lsals.size () > 1 |
9779 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9780 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9781 | ||
6c5b2ebe | 9782 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9783 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9784 | |
9785 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9786 | arg = skip_spaces (arg); |
f1310107 TJB |
9787 | |
9788 | /* Parse the end location. */ | |
9789 | ||
f1310107 TJB |
9790 | arg_start = arg; |
9791 | ||
f8eba3c6 | 9792 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9793 | parse_breakpoint_sals because we need to specify the start location's |
9794 | symtab and line as the default symtab and line for the end of the | |
9795 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9796 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9797 | event_location_up end_location = string_to_event_location (&arg, |
9798 | current_language); | |
9799 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9800 | sal_start.symtab, sal_start.line, |
9801 | &canonical_end, NULL, NULL); | |
9802 | ||
6c5b2ebe | 9803 | if (canonical_end.lsals.empty ()) |
f1310107 | 9804 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9805 | |
6c5b2ebe PA |
9806 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9807 | if (canonical_end.lsals.size () > 1 | |
9808 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9809 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9810 | ||
6c5b2ebe | 9811 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9812 | |
9813 | end = find_breakpoint_range_end (sal_end); | |
9814 | if (sal_start.pc > end) | |
177b42fe | 9815 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9816 | |
9817 | length = end - sal_start.pc + 1; | |
9818 | if (length < 0) | |
9819 | /* Length overflowed. */ | |
9820 | error (_("Address range too large.")); | |
9821 | else if (length == 1) | |
9822 | { | |
9823 | /* This range is simple enough to be handled by | |
9824 | the `hbreak' command. */ | |
81b1e71c | 9825 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9826 | |
9827 | return; | |
9828 | } | |
9829 | ||
9830 | /* Now set up the breakpoint. */ | |
9831 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9832 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9833 | set_breakpoint_count (breakpoint_count + 1); |
9834 | b->number = breakpoint_count; | |
9835 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9836 | b->location = std::move (start_location); |
9837 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9838 | b->loc->length = length; |
9839 | ||
f1310107 | 9840 | mention (b); |
76727919 | 9841 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9842 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9843 | } |
9844 | ||
4a64f543 MS |
9845 | /* Return non-zero if EXP is verified as constant. Returned zero |
9846 | means EXP is variable. Also the constant detection may fail for | |
9847 | some constant expressions and in such case still falsely return | |
9848 | zero. */ | |
2e6e3d9c | 9849 | |
65d79d4b SDJ |
9850 | static int |
9851 | watchpoint_exp_is_const (const struct expression *exp) | |
9852 | { | |
9853 | int i = exp->nelts; | |
9854 | ||
9855 | while (i > 0) | |
9856 | { | |
9857 | int oplenp, argsp; | |
9858 | ||
9859 | /* We are only interested in the descriptor of each element. */ | |
9860 | operator_length (exp, i, &oplenp, &argsp); | |
9861 | i -= oplenp; | |
9862 | ||
9863 | switch (exp->elts[i].opcode) | |
9864 | { | |
9865 | case BINOP_ADD: | |
9866 | case BINOP_SUB: | |
9867 | case BINOP_MUL: | |
9868 | case BINOP_DIV: | |
9869 | case BINOP_REM: | |
9870 | case BINOP_MOD: | |
9871 | case BINOP_LSH: | |
9872 | case BINOP_RSH: | |
9873 | case BINOP_LOGICAL_AND: | |
9874 | case BINOP_LOGICAL_OR: | |
9875 | case BINOP_BITWISE_AND: | |
9876 | case BINOP_BITWISE_IOR: | |
9877 | case BINOP_BITWISE_XOR: | |
9878 | case BINOP_EQUAL: | |
9879 | case BINOP_NOTEQUAL: | |
9880 | case BINOP_LESS: | |
9881 | case BINOP_GTR: | |
9882 | case BINOP_LEQ: | |
9883 | case BINOP_GEQ: | |
9884 | case BINOP_REPEAT: | |
9885 | case BINOP_COMMA: | |
9886 | case BINOP_EXP: | |
9887 | case BINOP_MIN: | |
9888 | case BINOP_MAX: | |
9889 | case BINOP_INTDIV: | |
9890 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9891 | case TERNOP_COND: |
9892 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9893 | |
9894 | case OP_LONG: | |
edd079d9 | 9895 | case OP_FLOAT: |
65d79d4b SDJ |
9896 | case OP_LAST: |
9897 | case OP_COMPLEX: | |
9898 | case OP_STRING: | |
65d79d4b SDJ |
9899 | case OP_ARRAY: |
9900 | case OP_TYPE: | |
608b4967 TT |
9901 | case OP_TYPEOF: |
9902 | case OP_DECLTYPE: | |
6e72ca20 | 9903 | case OP_TYPEID: |
65d79d4b SDJ |
9904 | case OP_NAME: |
9905 | case OP_OBJC_NSSTRING: | |
9906 | ||
9907 | case UNOP_NEG: | |
9908 | case UNOP_LOGICAL_NOT: | |
9909 | case UNOP_COMPLEMENT: | |
9910 | case UNOP_ADDR: | |
9911 | case UNOP_HIGH: | |
aeaa2474 | 9912 | case UNOP_CAST: |
9eaf6705 TT |
9913 | |
9914 | case UNOP_CAST_TYPE: | |
9915 | case UNOP_REINTERPRET_CAST: | |
9916 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9917 | /* Unary, binary and ternary operators: We have to check |
9918 | their operands. If they are constant, then so is the | |
9919 | result of that operation. For instance, if A and B are | |
9920 | determined to be constants, then so is "A + B". | |
9921 | ||
9922 | UNOP_IND is one exception to the rule above, because the | |
9923 | value of *ADDR is not necessarily a constant, even when | |
9924 | ADDR is. */ | |
65d79d4b SDJ |
9925 | break; |
9926 | ||
9927 | case OP_VAR_VALUE: | |
9928 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9929 | |
65d79d4b | 9930 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9931 | possible that a buggy compiler could mark a variable as |
9932 | constant even when it is not, and TYPE_CONST would return | |
9933 | true in this case, while SYMBOL_CLASS wouldn't. | |
9934 | ||
9935 | We also have to check for function symbols because they | |
9936 | are always constant. */ | |
65d79d4b SDJ |
9937 | { |
9938 | struct symbol *s = exp->elts[i + 2].symbol; | |
9939 | ||
9940 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9941 | && SYMBOL_CLASS (s) != LOC_CONST | |
9942 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9943 | return 0; | |
9944 | break; | |
9945 | } | |
9946 | ||
9947 | /* The default action is to return 0 because we are using | |
9948 | the optimistic approach here: If we don't know something, | |
9949 | then it is not a constant. */ | |
9950 | default: | |
9951 | return 0; | |
9952 | } | |
9953 | } | |
9954 | ||
9955 | return 1; | |
9956 | } | |
9957 | ||
c1fc2657 | 9958 | /* Watchpoint destructor. */ |
3a5c3e22 | 9959 | |
c1fc2657 | 9960 | watchpoint::~watchpoint () |
3a5c3e22 | 9961 | { |
c1fc2657 SM |
9962 | xfree (this->exp_string); |
9963 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
9964 | } |
9965 | ||
348d480f PA |
9966 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
9967 | ||
9968 | static void | |
9969 | re_set_watchpoint (struct breakpoint *b) | |
9970 | { | |
3a5c3e22 PA |
9971 | struct watchpoint *w = (struct watchpoint *) b; |
9972 | ||
348d480f PA |
9973 | /* Watchpoint can be either on expression using entirely global |
9974 | variables, or it can be on local variables. | |
9975 | ||
9976 | Watchpoints of the first kind are never auto-deleted, and even | |
9977 | persist across program restarts. Since they can use variables | |
9978 | from shared libraries, we need to reparse expression as libraries | |
9979 | are loaded and unloaded. | |
9980 | ||
9981 | Watchpoints on local variables can also change meaning as result | |
9982 | of solib event. For example, if a watchpoint uses both a local | |
9983 | and a global variables in expression, it's a local watchpoint, | |
9984 | but unloading of a shared library will make the expression | |
9985 | invalid. This is not a very common use case, but we still | |
9986 | re-evaluate expression, to avoid surprises to the user. | |
9987 | ||
9988 | Note that for local watchpoints, we re-evaluate it only if | |
9989 | watchpoints frame id is still valid. If it's not, it means the | |
9990 | watchpoint is out of scope and will be deleted soon. In fact, | |
9991 | I'm not sure we'll ever be called in this case. | |
9992 | ||
9993 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 9994 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9995 | |
3a5c3e22 PA |
9996 | Don't do anything about disabled watchpoints, since they will be |
9997 | reevaluated again when enabled. */ | |
9998 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
9999 | } |
10000 | ||
77b06cd7 TJB |
10001 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10002 | ||
10003 | static int | |
10004 | insert_watchpoint (struct bp_location *bl) | |
10005 | { | |
3a5c3e22 PA |
10006 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10007 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10008 | |
10009 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10010 | w->cond_exp.get ()); |
77b06cd7 TJB |
10011 | } |
10012 | ||
10013 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10014 | ||
10015 | static int | |
73971819 | 10016 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10017 | { |
3a5c3e22 PA |
10018 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10019 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10020 | |
10021 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10022 | w->cond_exp.get ()); |
e09342b5 TJB |
10023 | } |
10024 | ||
e09342b5 | 10025 | static int |
348d480f | 10026 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10027 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10028 | const struct target_waitstatus *ws) |
e09342b5 | 10029 | { |
348d480f | 10030 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10031 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10032 | |
348d480f PA |
10033 | /* Continuable hardware watchpoints are treated as non-existent if the |
10034 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10035 | some data address). Otherwise gdb won't stop on a break instruction | |
10036 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10037 | been defined. Also skip watchpoints which we know did not trigger | |
10038 | (did not match the data address). */ | |
10039 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10040 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10041 | return 0; |
9c06b0b4 | 10042 | |
348d480f | 10043 | return 1; |
9c06b0b4 TJB |
10044 | } |
10045 | ||
348d480f PA |
10046 | static void |
10047 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10048 | { |
348d480f | 10049 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10050 | |
348d480f | 10051 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10052 | } |
10053 | ||
10054 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10055 | hardware watchpoints. */ |
9c06b0b4 TJB |
10056 | |
10057 | static int | |
348d480f | 10058 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10059 | { |
3a5c3e22 PA |
10060 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10061 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10062 | |
10063 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10064 | } |
10065 | ||
10066 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10067 | hardware watchpoints. */ |
9c06b0b4 TJB |
10068 | |
10069 | static int | |
348d480f | 10070 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10071 | { |
efa80663 PA |
10072 | /* Read and access watchpoints only work with hardware support. */ |
10073 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10074 | } |
10075 | ||
9c06b0b4 | 10076 | static enum print_stop_action |
348d480f | 10077 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10078 | { |
348d480f | 10079 | struct breakpoint *b; |
348d480f | 10080 | enum print_stop_action result; |
3a5c3e22 | 10081 | struct watchpoint *w; |
79a45e25 | 10082 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10083 | |
10084 | gdb_assert (bs->bp_location_at != NULL); | |
10085 | ||
348d480f | 10086 | b = bs->breakpoint_at; |
3a5c3e22 | 10087 | w = (struct watchpoint *) b; |
348d480f | 10088 | |
f303dbd6 PA |
10089 | annotate_watchpoint (b->number); |
10090 | maybe_print_thread_hit_breakpoint (uiout); | |
10091 | ||
d7e74731 PA |
10092 | string_file stb; |
10093 | ||
76f9c9cf | 10094 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10095 | switch (b->type) |
10096 | { | |
348d480f | 10097 | case bp_watchpoint: |
9c06b0b4 | 10098 | case bp_hardware_watchpoint: |
112e8700 SM |
10099 | if (uiout->is_mi_like_p ()) |
10100 | uiout->field_string | |
10101 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10102 | mention (b); |
76f9c9cf | 10103 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10104 | uiout->text ("\nOld value = "); |
850645cf | 10105 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10106 | uiout->field_stream ("old", stb); |
10107 | uiout->text ("\nNew value = "); | |
850645cf | 10108 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10109 | uiout->field_stream ("new", stb); |
10110 | uiout->text ("\n"); | |
348d480f PA |
10111 | /* More than one watchpoint may have been triggered. */ |
10112 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10113 | break; |
10114 | ||
10115 | case bp_read_watchpoint: | |
112e8700 SM |
10116 | if (uiout->is_mi_like_p ()) |
10117 | uiout->field_string | |
10118 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10119 | mention (b); |
76f9c9cf | 10120 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10121 | uiout->text ("\nValue = "); |
850645cf | 10122 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10123 | uiout->field_stream ("value", stb); |
10124 | uiout->text ("\n"); | |
348d480f | 10125 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10126 | break; |
10127 | ||
10128 | case bp_access_watchpoint: | |
348d480f PA |
10129 | if (bs->old_val != NULL) |
10130 | { | |
112e8700 SM |
10131 | if (uiout->is_mi_like_p ()) |
10132 | uiout->field_string | |
10133 | ("reason", | |
348d480f PA |
10134 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10135 | mention (b); | |
76f9c9cf | 10136 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10137 | uiout->text ("\nOld value = "); |
850645cf | 10138 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10139 | uiout->field_stream ("old", stb); |
10140 | uiout->text ("\nNew value = "); | |
348d480f PA |
10141 | } |
10142 | else | |
10143 | { | |
10144 | mention (b); | |
112e8700 SM |
10145 | if (uiout->is_mi_like_p ()) |
10146 | uiout->field_string | |
10147 | ("reason", | |
348d480f | 10148 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10149 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10150 | uiout->text ("\nValue = "); |
348d480f | 10151 | } |
850645cf | 10152 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10153 | uiout->field_stream ("new", stb); |
10154 | uiout->text ("\n"); | |
348d480f | 10155 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10156 | break; |
10157 | default: | |
348d480f | 10158 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10159 | } |
10160 | ||
348d480f PA |
10161 | return result; |
10162 | } | |
10163 | ||
10164 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10165 | watchpoints. */ | |
10166 | ||
10167 | static void | |
10168 | print_mention_watchpoint (struct breakpoint *b) | |
10169 | { | |
3a5c3e22 | 10170 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10171 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10172 | const char *tuple_name; |
348d480f PA |
10173 | |
10174 | switch (b->type) | |
10175 | { | |
10176 | case bp_watchpoint: | |
112e8700 | 10177 | uiout->text ("Watchpoint "); |
46b9c129 | 10178 | tuple_name = "wpt"; |
348d480f PA |
10179 | break; |
10180 | case bp_hardware_watchpoint: | |
112e8700 | 10181 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10182 | tuple_name = "wpt"; |
348d480f PA |
10183 | break; |
10184 | case bp_read_watchpoint: | |
112e8700 | 10185 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10186 | tuple_name = "hw-rwpt"; |
348d480f PA |
10187 | break; |
10188 | case bp_access_watchpoint: | |
112e8700 | 10189 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10190 | tuple_name = "hw-awpt"; |
348d480f PA |
10191 | break; |
10192 | default: | |
10193 | internal_error (__FILE__, __LINE__, | |
10194 | _("Invalid hardware watchpoint type.")); | |
10195 | } | |
10196 | ||
46b9c129 | 10197 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10198 | uiout->field_int ("number", b->number); |
10199 | uiout->text (": "); | |
10200 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10201 | } |
10202 | ||
10203 | /* Implement the "print_recreate" breakpoint_ops method for | |
10204 | watchpoints. */ | |
10205 | ||
10206 | static void | |
10207 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10208 | { | |
3a5c3e22 PA |
10209 | struct watchpoint *w = (struct watchpoint *) b; |
10210 | ||
348d480f PA |
10211 | switch (b->type) |
10212 | { | |
10213 | case bp_watchpoint: | |
10214 | case bp_hardware_watchpoint: | |
10215 | fprintf_unfiltered (fp, "watch"); | |
10216 | break; | |
10217 | case bp_read_watchpoint: | |
10218 | fprintf_unfiltered (fp, "rwatch"); | |
10219 | break; | |
10220 | case bp_access_watchpoint: | |
10221 | fprintf_unfiltered (fp, "awatch"); | |
10222 | break; | |
10223 | default: | |
10224 | internal_error (__FILE__, __LINE__, | |
10225 | _("Invalid watchpoint type.")); | |
10226 | } | |
10227 | ||
3a5c3e22 | 10228 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10229 | print_recreate_thread (b, fp); |
348d480f PA |
10230 | } |
10231 | ||
427cd150 TT |
10232 | /* Implement the "explains_signal" breakpoint_ops method for |
10233 | watchpoints. */ | |
10234 | ||
47591c29 | 10235 | static int |
427cd150 TT |
10236 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10237 | { | |
10238 | /* A software watchpoint cannot cause a signal other than | |
10239 | GDB_SIGNAL_TRAP. */ | |
10240 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10241 | return 0; |
427cd150 | 10242 | |
47591c29 | 10243 | return 1; |
427cd150 TT |
10244 | } |
10245 | ||
348d480f PA |
10246 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10247 | ||
2060206e | 10248 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10249 | |
10250 | /* Implement the "insert" breakpoint_ops method for | |
10251 | masked hardware watchpoints. */ | |
10252 | ||
10253 | static int | |
10254 | insert_masked_watchpoint (struct bp_location *bl) | |
10255 | { | |
3a5c3e22 PA |
10256 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10257 | ||
10258 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10259 | bl->watchpoint_type); |
10260 | } | |
10261 | ||
10262 | /* Implement the "remove" breakpoint_ops method for | |
10263 | masked hardware watchpoints. */ | |
10264 | ||
10265 | static int | |
73971819 | 10266 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10267 | { |
3a5c3e22 PA |
10268 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10269 | ||
10270 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10271 | bl->watchpoint_type); |
10272 | } | |
10273 | ||
10274 | /* Implement the "resources_needed" breakpoint_ops method for | |
10275 | masked hardware watchpoints. */ | |
10276 | ||
10277 | static int | |
10278 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10279 | { | |
3a5c3e22 PA |
10280 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10281 | ||
10282 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10283 | } |
10284 | ||
10285 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10286 | masked hardware watchpoints. */ | |
10287 | ||
10288 | static int | |
10289 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10290 | { | |
10291 | return 0; | |
10292 | } | |
10293 | ||
10294 | /* Implement the "print_it" breakpoint_ops method for | |
10295 | masked hardware watchpoints. */ | |
10296 | ||
10297 | static enum print_stop_action | |
10298 | print_it_masked_watchpoint (bpstat bs) | |
10299 | { | |
10300 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10301 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10302 | |
10303 | /* Masked watchpoints have only one location. */ | |
10304 | gdb_assert (b->loc && b->loc->next == NULL); | |
10305 | ||
f303dbd6 PA |
10306 | annotate_watchpoint (b->number); |
10307 | maybe_print_thread_hit_breakpoint (uiout); | |
10308 | ||
348d480f PA |
10309 | switch (b->type) |
10310 | { | |
10311 | case bp_hardware_watchpoint: | |
112e8700 SM |
10312 | if (uiout->is_mi_like_p ()) |
10313 | uiout->field_string | |
10314 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10315 | break; |
10316 | ||
10317 | case bp_read_watchpoint: | |
112e8700 SM |
10318 | if (uiout->is_mi_like_p ()) |
10319 | uiout->field_string | |
10320 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10321 | break; |
10322 | ||
10323 | case bp_access_watchpoint: | |
112e8700 SM |
10324 | if (uiout->is_mi_like_p ()) |
10325 | uiout->field_string | |
10326 | ("reason", | |
348d480f PA |
10327 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10328 | break; | |
10329 | default: | |
10330 | internal_error (__FILE__, __LINE__, | |
10331 | _("Invalid hardware watchpoint type.")); | |
10332 | } | |
10333 | ||
10334 | mention (b); | |
112e8700 | 10335 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10336 | Check the underlying instruction at PC for the memory\n\ |
10337 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10338 | uiout->text ("\n"); |
9c06b0b4 TJB |
10339 | |
10340 | /* More than one watchpoint may have been triggered. */ | |
10341 | return PRINT_UNKNOWN; | |
10342 | } | |
10343 | ||
10344 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10345 | masked hardware watchpoints. */ | |
10346 | ||
10347 | static void | |
10348 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10349 | struct ui_out *uiout) | |
10350 | { | |
3a5c3e22 PA |
10351 | struct watchpoint *w = (struct watchpoint *) b; |
10352 | ||
9c06b0b4 TJB |
10353 | /* Masked watchpoints have only one location. */ |
10354 | gdb_assert (b->loc && b->loc->next == NULL); | |
10355 | ||
112e8700 SM |
10356 | uiout->text ("\tmask "); |
10357 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10358 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10359 | } |
10360 | ||
10361 | /* Implement the "print_mention" breakpoint_ops method for | |
10362 | masked hardware watchpoints. */ | |
10363 | ||
10364 | static void | |
10365 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10366 | { | |
3a5c3e22 | 10367 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10368 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10369 | const char *tuple_name; |
9c06b0b4 TJB |
10370 | |
10371 | switch (b->type) | |
10372 | { | |
10373 | case bp_hardware_watchpoint: | |
112e8700 | 10374 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10375 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10376 | break; |
10377 | case bp_read_watchpoint: | |
112e8700 | 10378 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10379 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10380 | break; |
10381 | case bp_access_watchpoint: | |
112e8700 | 10382 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10383 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10384 | break; |
10385 | default: | |
10386 | internal_error (__FILE__, __LINE__, | |
10387 | _("Invalid hardware watchpoint type.")); | |
10388 | } | |
10389 | ||
46b9c129 | 10390 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
112e8700 SM |
10391 | uiout->field_int ("number", b->number); |
10392 | uiout->text (": "); | |
10393 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10394 | } |
10395 | ||
10396 | /* Implement the "print_recreate" breakpoint_ops method for | |
10397 | masked hardware watchpoints. */ | |
10398 | ||
10399 | static void | |
10400 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10401 | { | |
3a5c3e22 | 10402 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10403 | char tmp[40]; |
10404 | ||
10405 | switch (b->type) | |
10406 | { | |
10407 | case bp_hardware_watchpoint: | |
10408 | fprintf_unfiltered (fp, "watch"); | |
10409 | break; | |
10410 | case bp_read_watchpoint: | |
10411 | fprintf_unfiltered (fp, "rwatch"); | |
10412 | break; | |
10413 | case bp_access_watchpoint: | |
10414 | fprintf_unfiltered (fp, "awatch"); | |
10415 | break; | |
10416 | default: | |
10417 | internal_error (__FILE__, __LINE__, | |
10418 | _("Invalid hardware watchpoint type.")); | |
10419 | } | |
10420 | ||
3a5c3e22 PA |
10421 | sprintf_vma (tmp, w->hw_wp_mask); |
10422 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10423 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10424 | } |
10425 | ||
10426 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10427 | ||
2060206e | 10428 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10429 | |
10430 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10431 | ||
10432 | static int | |
10433 | is_masked_watchpoint (const struct breakpoint *b) | |
10434 | { | |
10435 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10436 | } | |
10437 | ||
53a5351d JM |
10438 | /* accessflag: hw_write: watch write, |
10439 | hw_read: watch read, | |
10440 | hw_access: watch access (read or write) */ | |
c906108c | 10441 | static void |
bbc13ae3 | 10442 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10443 | int just_location, int internal) |
c906108c | 10444 | { |
c1fc2657 | 10445 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10446 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10447 | struct value *result; |
bb9d5f81 | 10448 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10449 | const char *exp_start = NULL; |
10450 | const char *exp_end = NULL; | |
10451 | const char *tok, *end_tok; | |
9c06b0b4 | 10452 | int toklen = -1; |
bbc13ae3 KS |
10453 | const char *cond_start = NULL; |
10454 | const char *cond_end = NULL; | |
c906108c | 10455 | enum bptype bp_type; |
37e4754d | 10456 | int thread = -1; |
0cf6dd15 | 10457 | int pc = 0; |
9c06b0b4 TJB |
10458 | /* Flag to indicate whether we are going to use masks for |
10459 | the hardware watchpoint. */ | |
10460 | int use_mask = 0; | |
10461 | CORE_ADDR mask = 0; | |
c906108c | 10462 | |
37e4754d LM |
10463 | /* Make sure that we actually have parameters to parse. */ |
10464 | if (arg != NULL && arg[0] != '\0') | |
10465 | { | |
bbc13ae3 KS |
10466 | const char *value_start; |
10467 | ||
10468 | exp_end = arg + strlen (arg); | |
37e4754d | 10469 | |
9c06b0b4 TJB |
10470 | /* Look for "parameter value" pairs at the end |
10471 | of the arguments string. */ | |
bbc13ae3 | 10472 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10473 | { |
10474 | /* Skip whitespace at the end of the argument list. */ | |
10475 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10476 | tok--; | |
10477 | ||
10478 | /* Find the beginning of the last token. | |
10479 | This is the value of the parameter. */ | |
10480 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10481 | tok--; | |
10482 | value_start = tok + 1; | |
10483 | ||
10484 | /* Skip whitespace. */ | |
10485 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10486 | tok--; | |
10487 | ||
10488 | end_tok = tok; | |
10489 | ||
10490 | /* Find the beginning of the second to last token. | |
10491 | This is the parameter itself. */ | |
10492 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10493 | tok--; | |
10494 | tok++; | |
10495 | toklen = end_tok - tok + 1; | |
10496 | ||
61012eef | 10497 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10498 | { |
5d5658a1 | 10499 | struct thread_info *thr; |
9c06b0b4 TJB |
10500 | /* At this point we've found a "thread" token, which means |
10501 | the user is trying to set a watchpoint that triggers | |
10502 | only in a specific thread. */ | |
5d5658a1 | 10503 | const char *endp; |
37e4754d | 10504 | |
9c06b0b4 TJB |
10505 | if (thread != -1) |
10506 | error(_("You can specify only one thread.")); | |
37e4754d | 10507 | |
9c06b0b4 | 10508 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10509 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10510 | |
5d5658a1 | 10511 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10512 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10513 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10514 | |
5d5658a1 | 10515 | thread = thr->global_num; |
9c06b0b4 | 10516 | } |
61012eef | 10517 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10518 | { |
10519 | /* We've found a "mask" token, which means the user wants to | |
10520 | create a hardware watchpoint that is going to have the mask | |
10521 | facility. */ | |
10522 | struct value *mask_value, *mark; | |
37e4754d | 10523 | |
9c06b0b4 TJB |
10524 | if (use_mask) |
10525 | error(_("You can specify only one mask.")); | |
37e4754d | 10526 | |
9c06b0b4 | 10527 | use_mask = just_location = 1; |
37e4754d | 10528 | |
9c06b0b4 TJB |
10529 | mark = value_mark (); |
10530 | mask_value = parse_to_comma_and_eval (&value_start); | |
10531 | mask = value_as_address (mask_value); | |
10532 | value_free_to_mark (mark); | |
10533 | } | |
10534 | else | |
10535 | /* We didn't recognize what we found. We should stop here. */ | |
10536 | break; | |
37e4754d | 10537 | |
9c06b0b4 TJB |
10538 | /* Truncate the string and get rid of the "parameter value" pair before |
10539 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10540 | exp_end = tok; |
9c06b0b4 | 10541 | } |
37e4754d | 10542 | } |
bbc13ae3 KS |
10543 | else |
10544 | exp_end = arg; | |
37e4754d | 10545 | |
bbc13ae3 KS |
10546 | /* Parse the rest of the arguments. From here on out, everything |
10547 | is in terms of a newly allocated string instead of the original | |
10548 | ARG. */ | |
81b1e71c TT |
10549 | std::string expression (arg, exp_end - arg); |
10550 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10551 | innermost_block_tracker tracker; |
10552 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10553 | exp_end = arg; |
fa8a61dc TT |
10554 | /* Remove trailing whitespace from the expression before saving it. |
10555 | This makes the eventual display of the expression string a bit | |
10556 | prettier. */ | |
10557 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10558 | --exp_end; | |
10559 | ||
65d79d4b | 10560 | /* Checking if the expression is not constant. */ |
4d01a485 | 10561 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10562 | { |
10563 | int len; | |
10564 | ||
10565 | len = exp_end - exp_start; | |
10566 | while (len > 0 && isspace (exp_start[len - 1])) | |
10567 | len--; | |
10568 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10569 | } | |
10570 | ||
699bd4cf | 10571 | exp_valid_block = tracker.block (); |
b926417a | 10572 | struct value *mark = value_mark (); |
850645cf TT |
10573 | struct value *val_as_value = nullptr; |
10574 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10575 | just_location); | |
06a64a0b | 10576 | |
850645cf | 10577 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10578 | { |
850645cf TT |
10579 | saved_bitpos = value_bitpos (val_as_value); |
10580 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10581 | } |
10582 | ||
850645cf | 10583 | value_ref_ptr val; |
06a64a0b TT |
10584 | if (just_location) |
10585 | { | |
9c06b0b4 TJB |
10586 | int ret; |
10587 | ||
06a64a0b | 10588 | exp_valid_block = NULL; |
850645cf | 10589 | val = release_value (value_addr (result)); |
06a64a0b | 10590 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10591 | |
10592 | if (use_mask) | |
10593 | { | |
850645cf | 10594 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10595 | mask); |
10596 | if (ret == -1) | |
10597 | error (_("This target does not support masked watchpoints.")); | |
10598 | else if (ret == -2) | |
10599 | error (_("Invalid mask or memory region.")); | |
10600 | } | |
06a64a0b | 10601 | } |
850645cf TT |
10602 | else if (val_as_value != NULL) |
10603 | val = release_value (val_as_value); | |
c906108c | 10604 | |
f1735a53 TT |
10605 | tok = skip_spaces (arg); |
10606 | end_tok = skip_to_space (tok); | |
c906108c SS |
10607 | |
10608 | toklen = end_tok - tok; | |
10609 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10610 | { | |
10611 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10612 | innermost_block_tracker if_tracker; |
10613 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10614 | |
10615 | /* The watchpoint expression may not be local, but the condition | |
10616 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10617 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10618 | |
c906108c SS |
10619 | cond_end = tok; |
10620 | } | |
10621 | if (*tok) | |
8a3fe4f8 | 10622 | error (_("Junk at end of command.")); |
c906108c | 10623 | |
441d7c93 PA |
10624 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10625 | ||
10626 | /* Save this because create_internal_breakpoint below invalidates | |
10627 | 'wp_frame'. */ | |
10628 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10629 | |
10630 | /* If the expression is "local", then set up a "watchpoint scope" | |
10631 | breakpoint at the point where we've left the scope of the watchpoint | |
10632 | expression. Create the scope breakpoint before the watchpoint, so | |
10633 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10634 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10635 | { |
441d7c93 PA |
10636 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10637 | ||
10638 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10639 | { |
441d7c93 PA |
10640 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10641 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10642 | ||
edb3359d | 10643 | scope_breakpoint |
441d7c93 | 10644 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10645 | bp_watchpoint_scope, |
10646 | &momentary_breakpoint_ops); | |
d983da9c | 10647 | |
441d7c93 PA |
10648 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10649 | wp_frame = NULL; | |
10650 | ||
edb3359d | 10651 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10652 | |
edb3359d DJ |
10653 | /* Automatically delete the breakpoint when it hits. */ |
10654 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10655 | |
edb3359d | 10656 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10657 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10658 | |
edb3359d | 10659 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10660 | scope_breakpoint->loc->gdbarch = caller_arch; |
10661 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10662 | scope_breakpoint->loc->address |
a6d9a66e UW |
10663 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10664 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10665 | scope_breakpoint->type); |
10666 | } | |
d983da9c DJ |
10667 | } |
10668 | ||
e8369a73 AB |
10669 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10670 | watchpoints here even if hardware watchpoints are turned off, a call | |
10671 | to update_watchpoint later in this function will cause the type to | |
10672 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10673 | ||
10674 | if (accessflag == hw_read) | |
10675 | bp_type = bp_read_watchpoint; | |
10676 | else if (accessflag == hw_access) | |
10677 | bp_type = bp_access_watchpoint; | |
10678 | else | |
10679 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10680 | |
b270e6f9 | 10681 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10682 | |
348d480f | 10683 | if (use_mask) |
b270e6f9 | 10684 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10685 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10686 | else |
b270e6f9 | 10687 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10688 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10689 | w->thread = thread; |
10690 | w->disposition = disp_donttouch; | |
10691 | w->pspace = current_program_space; | |
b22e99fd | 10692 | w->exp = std::move (exp); |
3a5c3e22 PA |
10693 | w->exp_valid_block = exp_valid_block; |
10694 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10695 | if (just_location) |
10696 | { | |
850645cf TT |
10697 | struct type *t = value_type (val.get ()); |
10698 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10699 | |
43cc5389 TT |
10700 | w->exp_string_reparse |
10701 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10702 | |
3a5c3e22 | 10703 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10704 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10705 | } |
10706 | else | |
3a5c3e22 | 10707 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10708 | |
10709 | if (use_mask) | |
10710 | { | |
3a5c3e22 | 10711 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10712 | } |
10713 | else | |
10714 | { | |
3a5c3e22 | 10715 | w->val = val; |
bb9d5f81 PP |
10716 | w->val_bitpos = saved_bitpos; |
10717 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 10718 | w->val_valid = 1; |
9c06b0b4 | 10719 | } |
77b06cd7 | 10720 | |
c906108c | 10721 | if (cond_start) |
c1fc2657 | 10722 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10723 | else |
c1fc2657 | 10724 | w->cond_string = 0; |
c5aa993b | 10725 | |
441d7c93 | 10726 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10727 | { |
441d7c93 | 10728 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10729 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10730 | } |
c906108c | 10731 | else |
f6bc2008 | 10732 | { |
3a5c3e22 PA |
10733 | w->watchpoint_frame = null_frame_id; |
10734 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10735 | } |
c906108c | 10736 | |
d983da9c | 10737 | if (scope_breakpoint != NULL) |
c906108c | 10738 | { |
d983da9c DJ |
10739 | /* The scope breakpoint is related to the watchpoint. We will |
10740 | need to act on them together. */ | |
c1fc2657 | 10741 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10742 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10743 | } |
d983da9c | 10744 | |
06a64a0b TT |
10745 | if (!just_location) |
10746 | value_free_to_mark (mark); | |
2d134ed3 | 10747 | |
b270e6f9 TT |
10748 | /* Finally update the new watchpoint. This creates the locations |
10749 | that should be inserted. */ | |
10750 | update_watchpoint (w.get (), 1); | |
a9634178 | 10751 | |
b270e6f9 | 10752 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10753 | } |
10754 | ||
e09342b5 | 10755 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10756 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10757 | |
c906108c | 10758 | static int |
a6535de1 | 10759 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10760 | { |
10761 | int found_memory_cnt = 0; | |
10762 | ||
10763 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10764 | if (!can_use_hw_watchpoints) |
c906108c | 10765 | return 0; |
c5aa993b | 10766 | |
a6535de1 TT |
10767 | gdb_assert (!vals.empty ()); |
10768 | struct value *head = vals[0].get (); | |
10769 | ||
5c44784c JM |
10770 | /* Make sure that the value of the expression depends only upon |
10771 | memory contents, and values computed from them within GDB. If we | |
10772 | find any register references or function calls, we can't use a | |
10773 | hardware watchpoint. | |
10774 | ||
10775 | The idea here is that evaluating an expression generates a series | |
10776 | of values, one holding the value of every subexpression. (The | |
10777 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10778 | a*b+c.) GDB's values hold almost enough information to establish | |
10779 | the criteria given above --- they identify memory lvalues, | |
10780 | register lvalues, computed values, etcetera. So we can evaluate | |
10781 | the expression, and then scan the chain of values that leaves | |
10782 | behind to decide whether we can detect any possible change to the | |
10783 | expression's final value using only hardware watchpoints. | |
10784 | ||
10785 | However, I don't think that the values returned by inferior | |
10786 | function calls are special in any way. So this function may not | |
10787 | notice that an expression involving an inferior function call | |
10788 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10789 | for (const value_ref_ptr &iter : vals) |
c906108c | 10790 | { |
a6535de1 TT |
10791 | struct value *v = iter.get (); |
10792 | ||
5c44784c | 10793 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10794 | { |
8464be76 DJ |
10795 | if (v != head && value_lazy (v)) |
10796 | /* A lazy memory lvalue in the chain is one that GDB never | |
10797 | needed to fetch; we either just used its address (e.g., | |
10798 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10799 | in `a,b'). This doesn't apply to HEAD; if that is | |
10800 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10801 | ; |
53a5351d | 10802 | else |
5c44784c JM |
10803 | { |
10804 | /* Ahh, memory we actually used! Check if we can cover | |
10805 | it with hardware watchpoints. */ | |
df407dfe | 10806 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10807 | |
10808 | /* We only watch structs and arrays if user asked for it | |
10809 | explicitly, never if they just happen to appear in a | |
10810 | middle of some value chain. */ | |
10811 | if (v == head | |
10812 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10813 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10814 | { | |
42ae5230 | 10815 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10816 | int len; |
10817 | int num_regs; | |
10818 | ||
a9634178 | 10819 | len = (target_exact_watchpoints |
e09342b5 TJB |
10820 | && is_scalar_type_recursive (vtype))? |
10821 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10822 | |
e09342b5 TJB |
10823 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10824 | if (!num_regs) | |
2e70b7b9 MS |
10825 | return 0; |
10826 | else | |
e09342b5 | 10827 | found_memory_cnt += num_regs; |
2e70b7b9 | 10828 | } |
5c44784c | 10829 | } |
c5aa993b | 10830 | } |
5086187c AC |
10831 | else if (VALUE_LVAL (v) != not_lval |
10832 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10833 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10834 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10835 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10836 | } |
10837 | ||
10838 | /* The expression itself looks suitable for using a hardware | |
10839 | watchpoint, but give the target machine a chance to reject it. */ | |
10840 | return found_memory_cnt; | |
10841 | } | |
10842 | ||
8b93c638 | 10843 | void |
f2fc3015 | 10844 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10845 | { |
84f4c1fe | 10846 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10847 | } |
10848 | ||
06a64a0b TT |
10849 | /* A helper function that looks for the "-location" argument and then |
10850 | calls watch_command_1. */ | |
10851 | ||
10852 | static void | |
0b39b52e | 10853 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10854 | { |
10855 | int just_location = 0; | |
10856 | ||
10857 | if (arg | |
10858 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10859 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
cbba3ecd | 10860 | just_location = 1; |
06a64a0b | 10861 | |
84f4c1fe | 10862 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10863 | } |
8926118c | 10864 | |
c5aa993b | 10865 | static void |
0b39b52e | 10866 | watch_command (const char *arg, int from_tty) |
c906108c | 10867 | { |
06a64a0b | 10868 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10869 | } |
10870 | ||
8b93c638 | 10871 | void |
f2fc3015 | 10872 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10873 | { |
84f4c1fe | 10874 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10875 | } |
8926118c | 10876 | |
c5aa993b | 10877 | static void |
0b39b52e | 10878 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10879 | { |
06a64a0b | 10880 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10881 | } |
10882 | ||
8b93c638 | 10883 | void |
f2fc3015 | 10884 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10885 | { |
84f4c1fe | 10886 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10887 | } |
8926118c | 10888 | |
c5aa993b | 10889 | static void |
0b39b52e | 10890 | awatch_command (const char *arg, int from_tty) |
c906108c | 10891 | { |
06a64a0b | 10892 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10893 | } |
c906108c | 10894 | \f |
c5aa993b | 10895 | |
cfc31633 PA |
10896 | /* Data for the FSM that manages the until(location)/advance commands |
10897 | in infcmd.c. Here because it uses the mechanisms of | |
10898 | breakpoints. */ | |
c906108c | 10899 | |
46e3ed7f | 10900 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10901 | { |
46e3ed7f | 10902 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10903 | int thread; |
10904 | ||
10905 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10906 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10907 | |
10908 | /* Breakpoint set at the return address in the caller frame. May be | |
10909 | NULL. */ | |
46e3ed7f | 10910 | breakpoint_up caller_breakpoint; |
cfc31633 | 10911 | |
46e3ed7f TT |
10912 | until_break_fsm (struct interp *cmd_interp, int thread, |
10913 | breakpoint_up &&location_breakpoint, | |
10914 | breakpoint_up &&caller_breakpoint) | |
10915 | : thread_fsm (cmd_interp), | |
10916 | thread (thread), | |
10917 | location_breakpoint (std::move (location_breakpoint)), | |
10918 | caller_breakpoint (std::move (caller_breakpoint)) | |
10919 | { | |
10920 | } | |
cfc31633 | 10921 | |
46e3ed7f TT |
10922 | void clean_up (struct thread_info *thread) override; |
10923 | bool should_stop (struct thread_info *thread) override; | |
10924 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10925 | }; |
10926 | ||
cfc31633 PA |
10927 | /* Implementation of the 'should_stop' FSM method for the |
10928 | until(location)/advance commands. */ | |
10929 | ||
46e3ed7f TT |
10930 | bool |
10931 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10932 | { |
cfc31633 | 10933 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10934 | location_breakpoint.get ()) != NULL |
10935 | || (caller_breakpoint != NULL | |
cfc31633 | 10936 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10937 | caller_breakpoint.get ()) != NULL)) |
10938 | set_finished (); | |
cfc31633 | 10939 | |
46e3ed7f | 10940 | return true; |
cfc31633 PA |
10941 | } |
10942 | ||
10943 | /* Implementation of the 'clean_up' FSM method for the | |
10944 | until(location)/advance commands. */ | |
10945 | ||
46e3ed7f TT |
10946 | void |
10947 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10948 | { |
cfc31633 | 10949 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10950 | location_breakpoint.reset (); |
10951 | caller_breakpoint.reset (); | |
10952 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
10953 | } |
10954 | ||
10955 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10956 | until(location)/advance commands. */ | |
10957 | ||
46e3ed7f TT |
10958 | enum async_reply_reason |
10959 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10960 | { |
10961 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10962 | } |
10963 | ||
c906108c | 10964 | void |
f2fc3015 | 10965 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10966 | { |
8556afb4 PA |
10967 | struct frame_info *frame; |
10968 | struct gdbarch *frame_gdbarch; | |
10969 | struct frame_id stack_frame_id; | |
10970 | struct frame_id caller_frame_id; | |
186c406b TT |
10971 | int thread; |
10972 | struct thread_info *tp; | |
c906108c | 10973 | |
70509625 | 10974 | clear_proceed_status (0); |
c906108c SS |
10975 | |
10976 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10977 | this function. */ |
c5aa993b | 10978 | |
ffc2605c | 10979 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 10980 | |
6c5b2ebe PA |
10981 | std::vector<symtab_and_line> sals |
10982 | = (last_displayed_sal_is_valid () | |
10983 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
10984 | get_last_displayed_symtab (), | |
10985 | get_last_displayed_line ()) | |
10986 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 10987 | NULL, NULL, 0)); |
c5aa993b | 10988 | |
6c5b2ebe | 10989 | if (sals.size () != 1) |
8a3fe4f8 | 10990 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10991 | |
6c5b2ebe | 10992 | symtab_and_line &sal = sals[0]; |
c5aa993b | 10993 | |
c906108c | 10994 | if (*arg) |
8a3fe4f8 | 10995 | error (_("Junk at end of arguments.")); |
c5aa993b | 10996 | |
c906108c | 10997 | resolve_sal_pc (&sal); |
c5aa993b | 10998 | |
186c406b | 10999 | tp = inferior_thread (); |
5d5658a1 | 11000 | thread = tp->global_num; |
186c406b | 11001 | |
8556afb4 PA |
11002 | /* Note linespec handling above invalidates the frame chain. |
11003 | Installing a breakpoint also invalidates the frame chain (as it | |
11004 | may need to switch threads), so do any frame handling before | |
11005 | that. */ | |
11006 | ||
11007 | frame = get_selected_frame (NULL); | |
11008 | frame_gdbarch = get_frame_arch (frame); | |
11009 | stack_frame_id = get_stack_frame_id (frame); | |
11010 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11011 | |
ae66c1fc EZ |
11012 | /* Keep within the current frame, or in frames called by the current |
11013 | one. */ | |
edb3359d | 11014 | |
454dafbd | 11015 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11016 | |
11017 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11018 | ||
883bc8d1 | 11019 | if (frame_id_p (caller_frame_id)) |
c906108c | 11020 | { |
883bc8d1 | 11021 | struct symtab_and_line sal2; |
cfc31633 | 11022 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11023 | |
11024 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11025 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11026 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11027 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11028 | sal2, | |
11029 | caller_frame_id, | |
11030 | bp_until); | |
186c406b | 11031 | |
883bc8d1 | 11032 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11033 | lj_deleter.emplace (thread); |
c906108c | 11034 | } |
c5aa993b | 11035 | |
c70a6932 JK |
11036 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11037 | frame = NULL; | |
11038 | ||
454dafbd | 11039 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11040 | if (anywhere) |
11041 | /* If the user told us to continue until a specified location, | |
11042 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11043 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11044 | null_frame_id, bp_until); | |
883bc8d1 PA |
11045 | else |
11046 | /* Otherwise, specify the selected frame, because we want to stop | |
11047 | only at the very same frame. */ | |
cfc31633 PA |
11048 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11049 | stack_frame_id, bp_until); | |
883bc8d1 | 11050 | |
46e3ed7f TT |
11051 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11052 | std::move (location_breakpoint), | |
11053 | std::move (caller_breakpoint)); | |
f107f563 | 11054 | |
5419bdae TT |
11055 | if (lj_deleter) |
11056 | lj_deleter->release (); | |
f107f563 | 11057 | |
cfc31633 | 11058 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11059 | } |
ae66c1fc | 11060 | |
c906108c SS |
11061 | /* This function attempts to parse an optional "if <cond>" clause |
11062 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11063 | |
c906108c SS |
11064 | Else, it returns a pointer to the condition string. (It does not |
11065 | attempt to evaluate the string against a particular block.) And, | |
11066 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11067 | if clause in the arg string. */ |
53a5351d | 11068 | |
63160a43 PA |
11069 | const char * |
11070 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11071 | { |
63160a43 | 11072 | const char *cond_string; |
c5aa993b JM |
11073 | |
11074 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11075 | return NULL; |
c5aa993b | 11076 | |
4a64f543 | 11077 | /* Skip the "if" keyword. */ |
c906108c | 11078 | (*arg) += 2; |
c5aa993b | 11079 | |
c906108c | 11080 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11081 | condition string. */ |
f1735a53 | 11082 | *arg = skip_spaces (*arg); |
c906108c | 11083 | cond_string = *arg; |
c5aa993b | 11084 | |
4a64f543 MS |
11085 | /* Assume that the condition occupies the remainder of the arg |
11086 | string. */ | |
c906108c | 11087 | (*arg) += strlen (cond_string); |
c5aa993b | 11088 | |
c906108c SS |
11089 | return cond_string; |
11090 | } | |
c5aa993b | 11091 | |
c906108c SS |
11092 | /* Commands to deal with catching events, such as signals, exceptions, |
11093 | process start/exit, etc. */ | |
c5aa993b JM |
11094 | |
11095 | typedef enum | |
11096 | { | |
44feb3ce TT |
11097 | catch_fork_temporary, catch_vfork_temporary, |
11098 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11099 | } |
11100 | catch_fork_kind; | |
11101 | ||
c906108c | 11102 | static void |
eb4c3f4a | 11103 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11104 | struct cmd_list_element *command) |
c906108c | 11105 | { |
a6d9a66e | 11106 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11107 | const char *cond_string = NULL; |
44feb3ce TT |
11108 | catch_fork_kind fork_kind; |
11109 | int tempflag; | |
11110 | ||
11111 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11112 | tempflag = (fork_kind == catch_fork_temporary | |
11113 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11114 | |
44feb3ce TT |
11115 | if (!arg) |
11116 | arg = ""; | |
f1735a53 | 11117 | arg = skip_spaces (arg); |
c5aa993b | 11118 | |
c906108c | 11119 | /* The allowed syntax is: |
c5aa993b JM |
11120 | catch [v]fork |
11121 | catch [v]fork if <cond> | |
11122 | ||
4a64f543 | 11123 | First, check if there's an if clause. */ |
c906108c | 11124 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11125 | |
c906108c | 11126 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11127 | error (_("Junk at end of arguments.")); |
c5aa993b | 11128 | |
c906108c | 11129 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11130 | and enable reporting of such events. */ |
c5aa993b JM |
11131 | switch (fork_kind) |
11132 | { | |
44feb3ce TT |
11133 | case catch_fork_temporary: |
11134 | case catch_fork_permanent: | |
a6d9a66e | 11135 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11136 | &catch_fork_breakpoint_ops); |
c906108c | 11137 | break; |
44feb3ce TT |
11138 | case catch_vfork_temporary: |
11139 | case catch_vfork_permanent: | |
a6d9a66e | 11140 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11141 | &catch_vfork_breakpoint_ops); |
c906108c | 11142 | break; |
c5aa993b | 11143 | default: |
8a3fe4f8 | 11144 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11145 | break; |
c5aa993b | 11146 | } |
c906108c SS |
11147 | } |
11148 | ||
11149 | static void | |
eb4c3f4a | 11150 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11151 | struct cmd_list_element *command) |
c906108c | 11152 | { |
a6d9a66e | 11153 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11154 | int tempflag; |
63160a43 | 11155 | const char *cond_string = NULL; |
c906108c | 11156 | |
44feb3ce TT |
11157 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11158 | ||
11159 | if (!arg) | |
11160 | arg = ""; | |
f1735a53 | 11161 | arg = skip_spaces (arg); |
c906108c SS |
11162 | |
11163 | /* The allowed syntax is: | |
c5aa993b JM |
11164 | catch exec |
11165 | catch exec if <cond> | |
c906108c | 11166 | |
4a64f543 | 11167 | First, check if there's an if clause. */ |
c906108c SS |
11168 | cond_string = ep_parse_optional_if_clause (&arg); |
11169 | ||
11170 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11171 | error (_("Junk at end of arguments.")); |
c906108c | 11172 | |
b270e6f9 TT |
11173 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11174 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11175 | &catch_exec_breakpoint_ops); |
11176 | c->exec_pathname = NULL; | |
11177 | ||
b270e6f9 | 11178 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11179 | } |
c5aa993b | 11180 | |
9ac4176b | 11181 | void |
28010a5d PA |
11182 | init_ada_exception_breakpoint (struct breakpoint *b, |
11183 | struct gdbarch *gdbarch, | |
11184 | struct symtab_and_line sal, | |
f2fc3015 | 11185 | const char *addr_string, |
c0a91b2b | 11186 | const struct breakpoint_ops *ops, |
28010a5d | 11187 | int tempflag, |
349774ef | 11188 | int enabled, |
28010a5d | 11189 | int from_tty) |
f7f9143b | 11190 | { |
f7f9143b JB |
11191 | if (from_tty) |
11192 | { | |
5af949e3 UW |
11193 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11194 | if (!loc_gdbarch) | |
11195 | loc_gdbarch = gdbarch; | |
11196 | ||
6c95b8df PA |
11197 | describe_other_breakpoints (loc_gdbarch, |
11198 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11199 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11200 | version for exception catchpoints, because two catchpoints | |
11201 | used for different exception names will use the same address. | |
11202 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11203 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11204 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11205 | the user what type of catchpoint it is. The above is good |
11206 | enough for now, though. */ | |
11207 | } | |
11208 | ||
28010a5d | 11209 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11210 | |
349774ef | 11211 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11212 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11213 | b->location = string_to_event_location (&addr_string, |
11214 | language_def (language_ada)); | |
f7f9143b | 11215 | b->language = language_ada; |
f7f9143b JB |
11216 | } |
11217 | ||
c906108c | 11218 | static void |
981a3fb3 | 11219 | catch_command (const char *arg, int from_tty) |
c906108c | 11220 | { |
44feb3ce | 11221 | error (_("Catch requires an event name.")); |
c906108c SS |
11222 | } |
11223 | \f | |
11224 | ||
11225 | static void | |
981a3fb3 | 11226 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11227 | { |
44feb3ce | 11228 | error (_("Catch requires an event name.")); |
c906108c SS |
11229 | } |
11230 | ||
81b1e71c | 11231 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11232 | |
11233 | static int | |
81b1e71c | 11234 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11235 | { |
81b1e71c TT |
11236 | uintptr_t ua = (uintptr_t) a; |
11237 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11238 | |
81b1e71c | 11239 | if (a->number < b->number) |
8a2c437b | 11240 | return -1; |
81b1e71c | 11241 | else if (a->number > b->number) |
8a2c437b TT |
11242 | return 1; |
11243 | ||
11244 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11245 | the number 0. */ | |
11246 | if (ua < ub) | |
11247 | return -1; | |
94b0e70d | 11248 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11249 | } |
11250 | ||
80f8a6eb | 11251 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11252 | |
11253 | static void | |
0b39b52e | 11254 | clear_command (const char *arg, int from_tty) |
c906108c | 11255 | { |
81b1e71c | 11256 | struct breakpoint *b; |
c906108c | 11257 | int default_match; |
c906108c | 11258 | |
6c5b2ebe PA |
11259 | std::vector<symtab_and_line> decoded_sals; |
11260 | symtab_and_line last_sal; | |
11261 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11262 | if (arg) |
11263 | { | |
6c5b2ebe PA |
11264 | decoded_sals |
11265 | = decode_line_with_current_source (arg, | |
11266 | (DECODE_LINE_FUNFIRSTLINE | |
11267 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11268 | default_match = 0; |
6c5b2ebe | 11269 | sals = decoded_sals; |
c906108c SS |
11270 | } |
11271 | else | |
11272 | { | |
1bfeeb0f JL |
11273 | /* Set sal's line, symtab, pc, and pspace to the values |
11274 | corresponding to the last call to print_frame_info. If the | |
11275 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11276 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11277 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11278 | error (_("No source file specified.")); |
c906108c | 11279 | |
c906108c | 11280 | default_match = 1; |
6c5b2ebe | 11281 | sals = last_sal; |
c906108c SS |
11282 | } |
11283 | ||
4a64f543 MS |
11284 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11285 | seems, because all existing breakpoints typically have both | |
11286 | file/line and pc set. So, if clear is given file/line, we can | |
11287 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11288 | |
11289 | We only support clearing given the address explicitly | |
11290 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11291 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11292 | due to optimization, all in one block. |
4a64f543 MS |
11293 | |
11294 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11295 | PC corresponding to the same file:line, the breakpoint won't |
11296 | be cleared. We probably can still clear the breakpoint, but | |
11297 | since the other PC value is never presented to user, user | |
11298 | can only find it by guessing, and it does not seem important | |
11299 | to support that. */ | |
11300 | ||
4a64f543 MS |
11301 | /* For each line spec given, delete bps which correspond to it. Do |
11302 | it in two passes, solely to preserve the current behavior that | |
11303 | from_tty is forced true if we delete more than one | |
11304 | breakpoint. */ | |
c906108c | 11305 | |
81b1e71c | 11306 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11307 | for (const auto &sal : sals) |
c906108c | 11308 | { |
05cba821 JK |
11309 | const char *sal_fullname; |
11310 | ||
c906108c | 11311 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11312 | If line given (pc == 0), clear all bpts on specified line. |
11313 | If defaulting, clear all bpts on default line | |
c906108c | 11314 | or at default pc. |
c5aa993b JM |
11315 | |
11316 | defaulting sal.pc != 0 tests to do | |
11317 | ||
11318 | 0 1 pc | |
11319 | 1 1 pc _and_ line | |
11320 | 0 0 line | |
11321 | 1 0 <can't happen> */ | |
c906108c | 11322 | |
05cba821 JK |
11323 | sal_fullname = (sal.symtab == NULL |
11324 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11325 | |
4a64f543 | 11326 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11327 | ALL_BREAKPOINTS (b) |
c5aa993b | 11328 | { |
0d381245 | 11329 | int match = 0; |
4a64f543 | 11330 | /* Are we going to delete b? */ |
cc60f2e3 | 11331 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11332 | { |
11333 | struct bp_location *loc = b->loc; | |
11334 | for (; loc; loc = loc->next) | |
11335 | { | |
f8eba3c6 TT |
11336 | /* If the user specified file:line, don't allow a PC |
11337 | match. This matches historical gdb behavior. */ | |
11338 | int pc_match = (!sal.explicit_line | |
11339 | && sal.pc | |
11340 | && (loc->pspace == sal.pspace) | |
11341 | && (loc->address == sal.pc) | |
11342 | && (!section_is_overlay (loc->section) | |
11343 | || loc->section == sal.section)); | |
4aac40c8 TT |
11344 | int line_match = 0; |
11345 | ||
11346 | if ((default_match || sal.explicit_line) | |
2f202fde | 11347 | && loc->symtab != NULL |
05cba821 | 11348 | && sal_fullname != NULL |
4aac40c8 | 11349 | && sal.pspace == loc->pspace |
05cba821 JK |
11350 | && loc->line_number == sal.line |
11351 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11352 | sal_fullname) == 0) | |
11353 | line_match = 1; | |
4aac40c8 | 11354 | |
0d381245 VP |
11355 | if (pc_match || line_match) |
11356 | { | |
11357 | match = 1; | |
11358 | break; | |
11359 | } | |
11360 | } | |
11361 | } | |
11362 | ||
11363 | if (match) | |
81b1e71c | 11364 | found.push_back (b); |
c906108c | 11365 | } |
80f8a6eb | 11366 | } |
8a2c437b | 11367 | |
80f8a6eb | 11368 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11369 | if (found.empty ()) |
80f8a6eb MS |
11370 | { |
11371 | if (arg) | |
8a3fe4f8 | 11372 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11373 | else |
8a3fe4f8 | 11374 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11375 | } |
c906108c | 11376 | |
8a2c437b | 11377 | /* Remove duplicates from the vec. */ |
81b1e71c | 11378 | std::sort (found.begin (), found.end (), |
b926417a | 11379 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11380 | { |
b926417a | 11381 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11382 | }); |
11383 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11384 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11385 | { |
b926417a | 11386 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11387 | }), |
11388 | found.end ()); | |
8a2c437b | 11389 | |
81b1e71c | 11390 | if (found.size () > 1) |
4a64f543 | 11391 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11392 | if (from_tty) |
a3f17187 | 11393 | { |
81b1e71c | 11394 | if (found.size () == 1) |
a3f17187 AC |
11395 | printf_unfiltered (_("Deleted breakpoint ")); |
11396 | else | |
11397 | printf_unfiltered (_("Deleted breakpoints ")); | |
11398 | } | |
d6e956e5 | 11399 | |
81b1e71c | 11400 | for (breakpoint *iter : found) |
80f8a6eb | 11401 | { |
c5aa993b | 11402 | if (from_tty) |
81b1e71c TT |
11403 | printf_unfiltered ("%d ", iter->number); |
11404 | delete_breakpoint (iter); | |
c906108c | 11405 | } |
80f8a6eb MS |
11406 | if (from_tty) |
11407 | putchar_unfiltered ('\n'); | |
c906108c SS |
11408 | } |
11409 | \f | |
11410 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11411 | all breakpoints that are marked for deletion, whether hit or not. | |
11412 | This is called after any breakpoint is hit, or after errors. */ | |
11413 | ||
11414 | void | |
fba45db2 | 11415 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11416 | { |
35df4500 | 11417 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11418 | |
11419 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11420 | if (bs->breakpoint_at |
11421 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11422 | && bs->stop) |
f431efe5 | 11423 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11424 | |
35df4500 | 11425 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11426 | { |
b5de0fa7 | 11427 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11428 | delete_breakpoint (b); |
11429 | } | |
c906108c SS |
11430 | } |
11431 | ||
4a64f543 MS |
11432 | /* A comparison function for bp_location AP and BP being interfaced to |
11433 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
cb1e4e32 PA |
11434 | bl_address_is_meaningful says), secondarily by ordering first |
11435 | permanent elements and terciarily just ensuring the array is sorted | |
11436 | stable way despite qsort being an unstable algorithm. */ | |
876fa593 JK |
11437 | |
11438 | static int | |
f5336ca5 | 11439 | bp_locations_compare (const void *ap, const void *bp) |
876fa593 | 11440 | { |
9a3c8263 SM |
11441 | const struct bp_location *a = *(const struct bp_location **) ap; |
11442 | const struct bp_location *b = *(const struct bp_location **) bp; | |
876fa593 JK |
11443 | |
11444 | if (a->address != b->address) | |
11445 | return (a->address > b->address) - (a->address < b->address); | |
11446 | ||
dea2aa5f LM |
11447 | /* Sort locations at the same address by their pspace number, keeping |
11448 | locations of the same inferior (in a multi-inferior environment) | |
11449 | grouped. */ | |
11450 | ||
11451 | if (a->pspace->num != b->pspace->num) | |
11452 | return ((a->pspace->num > b->pspace->num) | |
11453 | - (a->pspace->num < b->pspace->num)); | |
11454 | ||
876fa593 | 11455 | /* Sort permanent breakpoints first. */ |
1a853c52 PA |
11456 | if (a->permanent != b->permanent) |
11457 | return (a->permanent < b->permanent) - (a->permanent > b->permanent); | |
876fa593 | 11458 | |
c56a97f9 JK |
11459 | /* Make the internal GDB representation stable across GDB runs |
11460 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11461 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11462 | |
11463 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11464 | return ((a->owner->number > b->owner->number) |
11465 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11466 | |
11467 | return (a > b) - (a < b); | |
11468 | } | |
11469 | ||
f5336ca5 PA |
11470 | /* Set bp_locations_placed_address_before_address_max and |
11471 | bp_locations_shadow_len_after_address_max according to the current | |
11472 | content of the bp_locations array. */ | |
f7545552 TT |
11473 | |
11474 | static void | |
f5336ca5 | 11475 | bp_locations_target_extensions_update (void) |
f7545552 | 11476 | { |
876fa593 JK |
11477 | struct bp_location *bl, **blp_tmp; |
11478 | ||
f5336ca5 PA |
11479 | bp_locations_placed_address_before_address_max = 0; |
11480 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11481 | |
11482 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11483 | { | |
11484 | CORE_ADDR start, end, addr; | |
11485 | ||
11486 | if (!bp_location_has_shadow (bl)) | |
11487 | continue; | |
11488 | ||
11489 | start = bl->target_info.placed_address; | |
11490 | end = start + bl->target_info.shadow_len; | |
11491 | ||
11492 | gdb_assert (bl->address >= start); | |
11493 | addr = bl->address - start; | |
f5336ca5 PA |
11494 | if (addr > bp_locations_placed_address_before_address_max) |
11495 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11496 | |
11497 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11498 | ||
11499 | gdb_assert (bl->address < end); | |
11500 | addr = end - bl->address; | |
f5336ca5 PA |
11501 | if (addr > bp_locations_shadow_len_after_address_max) |
11502 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11503 | } |
f7545552 TT |
11504 | } |
11505 | ||
1e4d1764 YQ |
11506 | /* Download tracepoint locations if they haven't been. */ |
11507 | ||
11508 | static void | |
11509 | download_tracepoint_locations (void) | |
11510 | { | |
7ed2c994 | 11511 | struct breakpoint *b; |
dd2e65cc | 11512 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11513 | |
5ed8105e | 11514 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11515 | |
7ed2c994 | 11516 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11517 | { |
7ed2c994 | 11518 | struct bp_location *bl; |
1e4d1764 | 11519 | struct tracepoint *t; |
f2a8bc8a | 11520 | int bp_location_downloaded = 0; |
1e4d1764 | 11521 | |
7ed2c994 | 11522 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11523 | ? !may_insert_fast_tracepoints |
11524 | : !may_insert_tracepoints)) | |
11525 | continue; | |
11526 | ||
dd2e65cc YQ |
11527 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11528 | { | |
11529 | if (target_can_download_tracepoint ()) | |
11530 | can_download_tracepoint = TRIBOOL_TRUE; | |
11531 | else | |
11532 | can_download_tracepoint = TRIBOOL_FALSE; | |
11533 | } | |
11534 | ||
11535 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11536 | break; | |
11537 | ||
7ed2c994 YQ |
11538 | for (bl = b->loc; bl; bl = bl->next) |
11539 | { | |
11540 | /* In tracepoint, locations are _never_ duplicated, so | |
11541 | should_be_inserted is equivalent to | |
11542 | unduplicated_should_be_inserted. */ | |
11543 | if (!should_be_inserted (bl) || bl->inserted) | |
11544 | continue; | |
1e4d1764 | 11545 | |
7ed2c994 | 11546 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11547 | |
7ed2c994 | 11548 | target_download_tracepoint (bl); |
1e4d1764 | 11549 | |
7ed2c994 | 11550 | bl->inserted = 1; |
f2a8bc8a | 11551 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11552 | } |
11553 | t = (struct tracepoint *) b; | |
11554 | t->number_on_target = b->number; | |
f2a8bc8a | 11555 | if (bp_location_downloaded) |
76727919 | 11556 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11557 | } |
1e4d1764 YQ |
11558 | } |
11559 | ||
934709f0 PW |
11560 | /* Swap the insertion/duplication state between two locations. */ |
11561 | ||
11562 | static void | |
11563 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11564 | { | |
11565 | const int left_inserted = left->inserted; | |
11566 | const int left_duplicate = left->duplicate; | |
b775012e | 11567 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11568 | const struct bp_target_info left_target_info = left->target_info; |
11569 | ||
1e4d1764 YQ |
11570 | /* Locations of tracepoints can never be duplicated. */ |
11571 | if (is_tracepoint (left->owner)) | |
11572 | gdb_assert (!left->duplicate); | |
11573 | if (is_tracepoint (right->owner)) | |
11574 | gdb_assert (!right->duplicate); | |
11575 | ||
934709f0 PW |
11576 | left->inserted = right->inserted; |
11577 | left->duplicate = right->duplicate; | |
b775012e | 11578 | left->needs_update = right->needs_update; |
934709f0 PW |
11579 | left->target_info = right->target_info; |
11580 | right->inserted = left_inserted; | |
11581 | right->duplicate = left_duplicate; | |
b775012e | 11582 | right->needs_update = left_needs_update; |
934709f0 PW |
11583 | right->target_info = left_target_info; |
11584 | } | |
11585 | ||
b775012e LM |
11586 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11587 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11588 | conditions on the target's side. Such conditions need to be updated on | |
11589 | the target. */ | |
11590 | ||
11591 | static void | |
11592 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11593 | { | |
11594 | struct bp_location **locp = NULL, **loc2p; | |
11595 | struct bp_location *loc; | |
11596 | CORE_ADDR address = 0; | |
11597 | int pspace_num; | |
11598 | ||
11599 | address = bl->address; | |
11600 | pspace_num = bl->pspace->num; | |
11601 | ||
11602 | /* This is only meaningful if the target is | |
11603 | evaluating conditions and if the user has | |
11604 | opted for condition evaluation on the target's | |
11605 | side. */ | |
11606 | if (gdb_evaluates_breakpoint_condition_p () | |
11607 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11608 | return; | |
11609 | ||
11610 | /* Flag all breakpoint locations with this address and | |
11611 | the same program space as the location | |
11612 | as "its condition has changed". We need to | |
11613 | update the conditions on the target's side. */ | |
11614 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11615 | { | |
11616 | loc = *loc2p; | |
11617 | ||
11618 | if (!is_breakpoint (loc->owner) | |
11619 | || pspace_num != loc->pspace->num) | |
11620 | continue; | |
11621 | ||
11622 | /* Flag the location appropriately. We use a different state to | |
11623 | let everyone know that we already updated the set of locations | |
11624 | with addr bl->address and program space bl->pspace. This is so | |
11625 | we don't have to keep calling these functions just to mark locations | |
11626 | that have already been marked. */ | |
11627 | loc->condition_changed = condition_updated; | |
11628 | ||
11629 | /* Free the agent expression bytecode as well. We will compute | |
11630 | it later on. */ | |
833177a4 | 11631 | loc->cond_bytecode.reset (); |
b775012e LM |
11632 | } |
11633 | } | |
44702360 PA |
11634 | /* Called whether new breakpoints are created, or existing breakpoints |
11635 | deleted, to update the global location list and recompute which | |
11636 | locations are duplicate of which. | |
b775012e | 11637 | |
04086b45 PA |
11638 | The INSERT_MODE flag determines whether locations may not, may, or |
11639 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11640 | info. */ | |
b60e7edf | 11641 | |
0d381245 | 11642 | static void |
44702360 | 11643 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11644 | { |
74960c60 | 11645 | struct breakpoint *b; |
876fa593 | 11646 | struct bp_location **locp, *loc; |
b775012e LM |
11647 | /* Last breakpoint location address that was marked for update. */ |
11648 | CORE_ADDR last_addr = 0; | |
11649 | /* Last breakpoint location program space that was marked for update. */ | |
11650 | int last_pspace_num = -1; | |
f7545552 | 11651 | |
2d134ed3 PA |
11652 | /* Used in the duplicates detection below. When iterating over all |
11653 | bp_locations, points to the first bp_location of a given address. | |
11654 | Breakpoints and watchpoints of different types are never | |
11655 | duplicates of each other. Keep one pointer for each type of | |
11656 | breakpoint/watchpoint, so we only need to loop over all locations | |
11657 | once. */ | |
11658 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11659 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11660 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11661 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11662 | |
f5336ca5 PA |
11663 | /* Saved former bp_locations array which we compare against the newly |
11664 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11665 | struct bp_location **old_locp; |
f5336ca5 | 11666 | unsigned old_locations_count; |
81b1e71c | 11667 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11668 | |
f5336ca5 PA |
11669 | old_locations_count = bp_locations_count; |
11670 | bp_locations = NULL; | |
11671 | bp_locations_count = 0; | |
0d381245 | 11672 | |
74960c60 | 11673 | ALL_BREAKPOINTS (b) |
876fa593 | 11674 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11675 | bp_locations_count++; |
876fa593 | 11676 | |
f5336ca5 PA |
11677 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11678 | locp = bp_locations; | |
876fa593 JK |
11679 | ALL_BREAKPOINTS (b) |
11680 | for (loc = b->loc; loc; loc = loc->next) | |
11681 | *locp++ = loc; | |
f5336ca5 PA |
11682 | qsort (bp_locations, bp_locations_count, sizeof (*bp_locations), |
11683 | bp_locations_compare); | |
876fa593 | 11684 | |
f5336ca5 | 11685 | bp_locations_target_extensions_update (); |
74960c60 | 11686 | |
4a64f543 MS |
11687 | /* Identify bp_location instances that are no longer present in the |
11688 | new list, and therefore should be freed. Note that it's not | |
11689 | necessary that those locations should be removed from inferior -- | |
11690 | if there's another location at the same address (previously | |
11691 | marked as duplicate), we don't need to remove/insert the | |
11692 | location. | |
876fa593 | 11693 | |
4a64f543 MS |
11694 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11695 | and former bp_location array state respectively. */ | |
876fa593 | 11696 | |
f5336ca5 | 11697 | locp = bp_locations; |
81b1e71c TT |
11698 | for (old_locp = old_locations.get (); |
11699 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11700 | old_locp++) |
74960c60 | 11701 | { |
876fa593 | 11702 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11703 | struct bp_location **loc2p; |
876fa593 | 11704 | |
e5dd4106 | 11705 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11706 | not, we have to free it. */ |
c7d46a38 | 11707 | int found_object = 0; |
20874c92 VP |
11708 | /* Tells if the location should remain inserted in the target. */ |
11709 | int keep_in_target = 0; | |
11710 | int removed = 0; | |
876fa593 | 11711 | |
4a64f543 MS |
11712 | /* Skip LOCP entries which will definitely never be needed. |
11713 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11714 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11715 | && (*locp)->address < old_loc->address) |
876fa593 | 11716 | locp++; |
c7d46a38 PA |
11717 | |
11718 | for (loc2p = locp; | |
f5336ca5 | 11719 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11720 | && (*loc2p)->address == old_loc->address); |
11721 | loc2p++) | |
11722 | { | |
b775012e LM |
11723 | /* Check if this is a new/duplicated location or a duplicated |
11724 | location that had its condition modified. If so, we want to send | |
11725 | its condition to the target if evaluation of conditions is taking | |
11726 | place there. */ | |
11727 | if ((*loc2p)->condition_changed == condition_modified | |
11728 | && (last_addr != old_loc->address | |
11729 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11730 | { |
b775012e LM |
11731 | force_breakpoint_reinsertion (*loc2p); |
11732 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11733 | } |
b775012e LM |
11734 | |
11735 | if (*loc2p == old_loc) | |
11736 | found_object = 1; | |
c7d46a38 | 11737 | } |
74960c60 | 11738 | |
b775012e LM |
11739 | /* We have already handled this address, update it so that we don't |
11740 | have to go through updates again. */ | |
11741 | last_addr = old_loc->address; | |
11742 | ||
11743 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11744 | if (!found_object) | |
11745 | force_breakpoint_reinsertion (old_loc); | |
11746 | ||
4a64f543 MS |
11747 | /* If this location is no longer present, and inserted, look if |
11748 | there's maybe a new location at the same address. If so, | |
11749 | mark that one inserted, and don't remove this one. This is | |
11750 | needed so that we don't have a time window where a breakpoint | |
11751 | at certain location is not inserted. */ | |
74960c60 | 11752 | |
876fa593 | 11753 | if (old_loc->inserted) |
0d381245 | 11754 | { |
4a64f543 MS |
11755 | /* If the location is inserted now, we might have to remove |
11756 | it. */ | |
74960c60 | 11757 | |
876fa593 | 11758 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11759 | { |
4a64f543 MS |
11760 | /* The location is still present in the location list, |
11761 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11762 | keep_in_target = 1; |
74960c60 VP |
11763 | } |
11764 | else | |
11765 | { | |
b775012e LM |
11766 | /* This location still exists, but it won't be kept in the |
11767 | target since it may have been disabled. We proceed to | |
11768 | remove its target-side condition. */ | |
11769 | ||
4a64f543 MS |
11770 | /* The location is either no longer present, or got |
11771 | disabled. See if there's another location at the | |
11772 | same address, in which case we don't need to remove | |
11773 | this one from the target. */ | |
876fa593 | 11774 | |
2bdf28a0 | 11775 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11776 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11777 | { |
876fa593 | 11778 | for (loc2p = locp; |
f5336ca5 | 11779 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11780 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11781 | loc2p++) |
11782 | { | |
11783 | struct bp_location *loc2 = *loc2p; | |
11784 | ||
2d134ed3 | 11785 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11786 | { |
85d721b8 PA |
11787 | /* Read watchpoint locations are switched to |
11788 | access watchpoints, if the former are not | |
11789 | supported, but the latter are. */ | |
11790 | if (is_hardware_watchpoint (old_loc->owner)) | |
11791 | { | |
11792 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11793 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11794 | } | |
11795 | ||
934709f0 PW |
11796 | /* loc2 is a duplicated location. We need to check |
11797 | if it should be inserted in case it will be | |
11798 | unduplicated. */ | |
11799 | if (loc2 != old_loc | |
11800 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11801 | { |
934709f0 | 11802 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11803 | keep_in_target = 1; |
11804 | break; | |
11805 | } | |
876fa593 JK |
11806 | } |
11807 | } | |
11808 | } | |
74960c60 VP |
11809 | } |
11810 | ||
20874c92 VP |
11811 | if (!keep_in_target) |
11812 | { | |
834c0d03 | 11813 | if (remove_breakpoint (old_loc)) |
20874c92 | 11814 | { |
4a64f543 MS |
11815 | /* This is just about all we can do. We could keep |
11816 | this location on the global list, and try to | |
11817 | remove it next time, but there's no particular | |
11818 | reason why we will succeed next time. | |
20874c92 | 11819 | |
4a64f543 MS |
11820 | Note that at this point, old_loc->owner is still |
11821 | valid, as delete_breakpoint frees the breakpoint | |
11822 | only after calling us. */ | |
3e43a32a MS |
11823 | printf_filtered (_("warning: Error removing " |
11824 | "breakpoint %d\n"), | |
876fa593 | 11825 | old_loc->owner->number); |
20874c92 VP |
11826 | } |
11827 | removed = 1; | |
11828 | } | |
0d381245 | 11829 | } |
74960c60 VP |
11830 | |
11831 | if (!found_object) | |
1c5cfe86 | 11832 | { |
fbea99ea | 11833 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11834 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11835 | { |
db82e815 PA |
11836 | /* This location was removed from the target. In |
11837 | non-stop mode, a race condition is possible where | |
11838 | we've removed a breakpoint, but stop events for that | |
11839 | breakpoint are already queued and will arrive later. | |
11840 | We apply an heuristic to be able to distinguish such | |
11841 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11842 | breakpoint location for a bit, and will retire it | |
11843 | after we see some number of events. The theory here | |
11844 | is that reporting of events should, "on the average", | |
11845 | be fair, so after a while we'll see events from all | |
11846 | threads that have anything of interest, and no longer | |
11847 | need to keep this breakpoint location around. We | |
11848 | don't hold locations forever so to reduce chances of | |
11849 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11850 | SIGTRAP. | |
11851 | ||
11852 | The heuristic failing can be disastrous on | |
11853 | decr_pc_after_break targets. | |
11854 | ||
11855 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11856 | if we fail to recognize a late breakpoint SIGTRAP, | |
11857 | because events_till_retirement has reached 0 too | |
11858 | soon, we'll fail to do the PC adjustment, and report | |
11859 | a random SIGTRAP to the user. When the user resumes | |
11860 | the inferior, it will most likely immediately crash | |
2dec564e | 11861 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11862 | corrupted, because of being resumed e.g., in the |
11863 | middle of a multi-byte instruction, or skipped a | |
11864 | one-byte instruction. This was actually seen happen | |
11865 | on native x86-linux, and should be less rare on | |
11866 | targets that do not support new thread events, like | |
11867 | remote, due to the heuristic depending on | |
11868 | thread_count. | |
11869 | ||
11870 | Mistaking a random SIGTRAP for a breakpoint trap | |
11871 | causes similar symptoms (PC adjustment applied when | |
11872 | it shouldn't), but then again, playing with SIGTRAPs | |
11873 | behind the debugger's back is asking for trouble. | |
11874 | ||
11875 | Since hardware watchpoint traps are always | |
11876 | distinguishable from other traps, so we don't need to | |
11877 | apply keep hardware watchpoint moribund locations | |
11878 | around. We simply always ignore hardware watchpoint | |
11879 | traps we can no longer explain. */ | |
11880 | ||
876fa593 JK |
11881 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
11882 | old_loc->owner = NULL; | |
20874c92 | 11883 | |
1123588c | 11884 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11885 | } |
11886 | else | |
f431efe5 PA |
11887 | { |
11888 | old_loc->owner = NULL; | |
11889 | decref_bp_location (&old_loc); | |
11890 | } | |
20874c92 | 11891 | } |
74960c60 | 11892 | } |
1c5cfe86 | 11893 | |
348d480f PA |
11894 | /* Rescan breakpoints at the same address and section, marking the |
11895 | first one as "first" and any others as "duplicates". This is so | |
11896 | that the bpt instruction is only inserted once. If we have a | |
11897 | permanent breakpoint at the same place as BPT, make that one the | |
11898 | official one, and the rest as duplicates. Permanent breakpoints | |
11899 | are sorted first for the same address. | |
11900 | ||
11901 | Do the same for hardware watchpoints, but also considering the | |
11902 | watchpoint's type (regular/access/read) and length. */ | |
11903 | ||
11904 | bp_loc_first = NULL; | |
11905 | wp_loc_first = NULL; | |
11906 | awp_loc_first = NULL; | |
11907 | rwp_loc_first = NULL; | |
11908 | ALL_BP_LOCATIONS (loc, locp) | |
11909 | { | |
11910 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11911 | non-NULL. */ | |
348d480f | 11912 | struct bp_location **loc_first_p; |
d3fbdd86 | 11913 | b = loc->owner; |
348d480f | 11914 | |
6f380991 | 11915 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11916 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11917 | /* Don't detect duplicate for tracepoint locations because they are |
11918 | never duplicated. See the comments in field `duplicate' of | |
11919 | `struct bp_location'. */ | |
348d480f | 11920 | || is_tracepoint (b)) |
b775012e LM |
11921 | { |
11922 | /* Clear the condition modification flag. */ | |
11923 | loc->condition_changed = condition_unchanged; | |
11924 | continue; | |
11925 | } | |
348d480f | 11926 | |
348d480f PA |
11927 | if (b->type == bp_hardware_watchpoint) |
11928 | loc_first_p = &wp_loc_first; | |
11929 | else if (b->type == bp_read_watchpoint) | |
11930 | loc_first_p = &rwp_loc_first; | |
11931 | else if (b->type == bp_access_watchpoint) | |
11932 | loc_first_p = &awp_loc_first; | |
11933 | else | |
11934 | loc_first_p = &bp_loc_first; | |
11935 | ||
11936 | if (*loc_first_p == NULL | |
11937 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11938 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11939 | { | |
11940 | *loc_first_p = loc; | |
11941 | loc->duplicate = 0; | |
b775012e LM |
11942 | |
11943 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11944 | { | |
11945 | loc->needs_update = 1; | |
11946 | /* Clear the condition modification flag. */ | |
11947 | loc->condition_changed = condition_unchanged; | |
11948 | } | |
348d480f PA |
11949 | continue; |
11950 | } | |
11951 | ||
934709f0 PW |
11952 | |
11953 | /* This and the above ensure the invariant that the first location | |
11954 | is not duplicated, and is the inserted one. | |
11955 | All following are marked as duplicated, and are not inserted. */ | |
11956 | if (loc->inserted) | |
11957 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11958 | loc->duplicate = 1; |
11959 | ||
b775012e LM |
11960 | /* Clear the condition modification flag. */ |
11961 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11962 | } |
11963 | ||
a25a5a45 | 11964 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11965 | { |
04086b45 | 11966 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11967 | insert_breakpoint_locations (); |
11968 | else | |
11969 | { | |
44702360 PA |
11970 | /* Even though the caller told us to not insert new |
11971 | locations, we may still need to update conditions on the | |
11972 | target's side of breakpoints that were already inserted | |
11973 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11974 | only update conditions for locations that are marked |
11975 | "needs_update". */ | |
11976 | update_inserted_breakpoint_locations (); | |
11977 | } | |
11978 | } | |
348d480f | 11979 | |
04086b45 | 11980 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11981 | download_tracepoint_locations (); |
348d480f PA |
11982 | } |
11983 | ||
11984 | void | |
11985 | breakpoint_retire_moribund (void) | |
11986 | { | |
1123588c TT |
11987 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11988 | { | |
11989 | struct bp_location *loc = moribund_locations[ix]; | |
11990 | if (--(loc->events_till_retirement) == 0) | |
11991 | { | |
11992 | decref_bp_location (&loc); | |
11993 | unordered_remove (moribund_locations, ix); | |
11994 | --ix; | |
11995 | } | |
11996 | } | |
348d480f PA |
11997 | } |
11998 | ||
11999 | static void | |
44702360 | 12000 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12001 | { |
348d480f | 12002 | |
a70b8144 | 12003 | try |
492d29ea PA |
12004 | { |
12005 | update_global_location_list (insert_mode); | |
12006 | } | |
230d2906 | 12007 | catch (const gdb_exception_error &e) |
492d29ea PA |
12008 | { |
12009 | } | |
348d480f PA |
12010 | } |
12011 | ||
12012 | /* Clear BKP from a BPS. */ | |
12013 | ||
12014 | static void | |
12015 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12016 | { | |
12017 | bpstat bs; | |
12018 | ||
12019 | for (bs = bps; bs; bs = bs->next) | |
12020 | if (bs->breakpoint_at == bpt) | |
12021 | { | |
12022 | bs->breakpoint_at = NULL; | |
12023 | bs->old_val = NULL; | |
12024 | /* bs->commands will be freed later. */ | |
12025 | } | |
12026 | } | |
12027 | ||
12028 | /* Callback for iterate_over_threads. */ | |
12029 | static int | |
12030 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12031 | { | |
9a3c8263 | 12032 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12033 | |
12034 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12035 | return 0; | |
12036 | } | |
12037 | ||
12038 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12039 | callbacks. */ | |
12040 | ||
12041 | static void | |
12042 | say_where (struct breakpoint *b) | |
12043 | { | |
12044 | struct value_print_options opts; | |
12045 | ||
12046 | get_user_print_options (&opts); | |
12047 | ||
12048 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12049 | single string. */ | |
12050 | if (b->loc == NULL) | |
12051 | { | |
f00aae0f KS |
12052 | /* For pending locations, the output differs slightly based |
12053 | on b->extra_string. If this is non-NULL, it contains either | |
12054 | a condition or dprintf arguments. */ | |
12055 | if (b->extra_string == NULL) | |
12056 | { | |
12057 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12058 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12059 | } |
12060 | else if (b->type == bp_dprintf) | |
12061 | { | |
12062 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12063 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12064 | b->extra_string); |
12065 | } | |
12066 | else | |
12067 | { | |
12068 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12069 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12070 | b->extra_string); |
12071 | } | |
348d480f PA |
12072 | } |
12073 | else | |
12074 | { | |
2f202fde | 12075 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12076 | { |
12077 | printf_filtered (" at "); | |
2636d81d PW |
12078 | fputs_styled (paddress (b->loc->gdbarch, b->loc->address), |
12079 | address_style.style (), | |
12080 | gdb_stdout); | |
348d480f | 12081 | } |
2f202fde | 12082 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12083 | { |
12084 | /* If there is a single location, we can print the location | |
12085 | more nicely. */ | |
12086 | if (b->loc->next == NULL) | |
0bb296cb TT |
12087 | { |
12088 | puts_filtered (": file "); | |
12089 | fputs_styled (symtab_to_filename_for_display (b->loc->symtab), | |
12090 | file_name_style.style (), | |
12091 | gdb_stdout); | |
12092 | printf_filtered (", line %d.", | |
12093 | b->loc->line_number); | |
12094 | } | |
f8eba3c6 TT |
12095 | else |
12096 | /* This is not ideal, but each location may have a | |
12097 | different file name, and this at least reflects the | |
12098 | real situation somewhat. */ | |
f00aae0f | 12099 | printf_filtered (": %s.", |
d28cd78a | 12100 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12101 | } |
348d480f PA |
12102 | |
12103 | if (b->loc->next) | |
12104 | { | |
12105 | struct bp_location *loc = b->loc; | |
12106 | int n = 0; | |
12107 | for (; loc; loc = loc->next) | |
12108 | ++n; | |
12109 | printf_filtered (" (%d locations)", n); | |
12110 | } | |
12111 | } | |
12112 | } | |
12113 | ||
5f486660 | 12114 | bp_location::~bp_location () |
348d480f | 12115 | { |
5f486660 | 12116 | xfree (function_name); |
348d480f PA |
12117 | } |
12118 | ||
c1fc2657 | 12119 | /* Destructor for the breakpoint base class. */ |
348d480f | 12120 | |
c1fc2657 | 12121 | breakpoint::~breakpoint () |
348d480f | 12122 | { |
c1fc2657 SM |
12123 | xfree (this->cond_string); |
12124 | xfree (this->extra_string); | |
12125 | xfree (this->filter); | |
348d480f PA |
12126 | } |
12127 | ||
2060206e PA |
12128 | static struct bp_location * |
12129 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12130 | { |
5f486660 | 12131 | return new bp_location (self); |
348d480f PA |
12132 | } |
12133 | ||
2060206e PA |
12134 | static void |
12135 | base_breakpoint_re_set (struct breakpoint *b) | |
12136 | { | |
12137 | /* Nothing to re-set. */ | |
12138 | } | |
12139 | ||
12140 | #define internal_error_pure_virtual_called() \ | |
12141 | gdb_assert_not_reached ("pure virtual function called") | |
12142 | ||
12143 | static int | |
12144 | base_breakpoint_insert_location (struct bp_location *bl) | |
12145 | { | |
12146 | internal_error_pure_virtual_called (); | |
12147 | } | |
12148 | ||
12149 | static int | |
73971819 PA |
12150 | base_breakpoint_remove_location (struct bp_location *bl, |
12151 | enum remove_bp_reason reason) | |
2060206e PA |
12152 | { |
12153 | internal_error_pure_virtual_called (); | |
12154 | } | |
12155 | ||
12156 | static int | |
12157 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12158 | const address_space *aspace, |
09ac7c10 TT |
12159 | CORE_ADDR bp_addr, |
12160 | const struct target_waitstatus *ws) | |
2060206e PA |
12161 | { |
12162 | internal_error_pure_virtual_called (); | |
12163 | } | |
12164 | ||
12165 | static void | |
12166 | base_breakpoint_check_status (bpstat bs) | |
12167 | { | |
12168 | /* Always stop. */ | |
12169 | } | |
12170 | ||
12171 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12172 | errors. */ | |
12173 | ||
12174 | static int | |
12175 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12176 | { | |
12177 | internal_error_pure_virtual_called (); | |
12178 | } | |
12179 | ||
12180 | /* A "resources_needed" breakpoint_ops method that just internal | |
12181 | errors. */ | |
12182 | ||
12183 | static int | |
12184 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12185 | { | |
12186 | internal_error_pure_virtual_called (); | |
12187 | } | |
12188 | ||
12189 | static enum print_stop_action | |
12190 | base_breakpoint_print_it (bpstat bs) | |
12191 | { | |
12192 | internal_error_pure_virtual_called (); | |
12193 | } | |
12194 | ||
12195 | static void | |
12196 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12197 | struct ui_out *uiout) | |
12198 | { | |
12199 | /* nothing */ | |
12200 | } | |
12201 | ||
12202 | static void | |
12203 | base_breakpoint_print_mention (struct breakpoint *b) | |
12204 | { | |
12205 | internal_error_pure_virtual_called (); | |
12206 | } | |
12207 | ||
12208 | static void | |
12209 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12210 | { | |
12211 | internal_error_pure_virtual_called (); | |
12212 | } | |
12213 | ||
983af33b | 12214 | static void |
f00aae0f KS |
12215 | base_breakpoint_create_sals_from_location |
12216 | (const struct event_location *location, | |
12217 | struct linespec_result *canonical, | |
12218 | enum bptype type_wanted) | |
983af33b SDJ |
12219 | { |
12220 | internal_error_pure_virtual_called (); | |
12221 | } | |
12222 | ||
12223 | static void | |
12224 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12225 | struct linespec_result *c, | |
e1e01040 PA |
12226 | gdb::unique_xmalloc_ptr<char> cond_string, |
12227 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12228 | enum bptype type_wanted, |
12229 | enum bpdisp disposition, | |
12230 | int thread, | |
12231 | int task, int ignore_count, | |
12232 | const struct breakpoint_ops *o, | |
12233 | int from_tty, int enabled, | |
44f238bb | 12234 | int internal, unsigned flags) |
983af33b SDJ |
12235 | { |
12236 | internal_error_pure_virtual_called (); | |
12237 | } | |
12238 | ||
6c5b2ebe | 12239 | static std::vector<symtab_and_line> |
f00aae0f KS |
12240 | base_breakpoint_decode_location (struct breakpoint *b, |
12241 | const struct event_location *location, | |
6c5b2ebe | 12242 | struct program_space *search_pspace) |
983af33b SDJ |
12243 | { |
12244 | internal_error_pure_virtual_called (); | |
12245 | } | |
12246 | ||
ab04a2af TT |
12247 | /* The default 'explains_signal' method. */ |
12248 | ||
47591c29 | 12249 | static int |
427cd150 | 12250 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12251 | { |
47591c29 | 12252 | return 1; |
ab04a2af TT |
12253 | } |
12254 | ||
9d6e6e84 HZ |
12255 | /* The default "after_condition_true" method. */ |
12256 | ||
12257 | static void | |
12258 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12259 | { | |
12260 | /* Nothing to do. */ | |
12261 | } | |
12262 | ||
ab04a2af | 12263 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12264 | { |
2060206e PA |
12265 | base_breakpoint_allocate_location, |
12266 | base_breakpoint_re_set, | |
12267 | base_breakpoint_insert_location, | |
12268 | base_breakpoint_remove_location, | |
12269 | base_breakpoint_breakpoint_hit, | |
12270 | base_breakpoint_check_status, | |
12271 | base_breakpoint_resources_needed, | |
12272 | base_breakpoint_works_in_software_mode, | |
12273 | base_breakpoint_print_it, | |
12274 | NULL, | |
12275 | base_breakpoint_print_one_detail, | |
12276 | base_breakpoint_print_mention, | |
983af33b | 12277 | base_breakpoint_print_recreate, |
5f700d83 | 12278 | base_breakpoint_create_sals_from_location, |
983af33b | 12279 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12280 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12281 | base_breakpoint_explains_signal, |
12282 | base_breakpoint_after_condition_true, | |
2060206e PA |
12283 | }; |
12284 | ||
12285 | /* Default breakpoint_ops methods. */ | |
12286 | ||
12287 | static void | |
348d480f PA |
12288 | bkpt_re_set (struct breakpoint *b) |
12289 | { | |
06edf0c0 | 12290 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12291 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12292 | { |
f00aae0f | 12293 | /* Anything without a location can't be re-set. */ |
348d480f | 12294 | delete_breakpoint (b); |
06edf0c0 | 12295 | return; |
348d480f | 12296 | } |
06edf0c0 PA |
12297 | |
12298 | breakpoint_re_set_default (b); | |
348d480f PA |
12299 | } |
12300 | ||
2060206e | 12301 | static int |
348d480f PA |
12302 | bkpt_insert_location (struct bp_location *bl) |
12303 | { | |
cd6c3b4f YQ |
12304 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12305 | ||
579c6ad9 | 12306 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12307 | bl->target_info.placed_address = addr; |
12308 | ||
348d480f | 12309 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12310 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12311 | else |
7c16b83e | 12312 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12313 | } |
12314 | ||
2060206e | 12315 | static int |
73971819 | 12316 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12317 | { |
12318 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12319 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12320 | else | |
73971819 | 12321 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12322 | } |
12323 | ||
2060206e | 12324 | static int |
348d480f | 12325 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12326 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12327 | const struct target_waitstatus *ws) |
348d480f | 12328 | { |
09ac7c10 | 12329 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12330 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12331 | return 0; |
12332 | ||
348d480f PA |
12333 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12334 | aspace, bp_addr)) | |
12335 | return 0; | |
12336 | ||
12337 | if (overlay_debugging /* unmapped overlay section */ | |
12338 | && section_is_overlay (bl->section) | |
12339 | && !section_is_mapped (bl->section)) | |
12340 | return 0; | |
12341 | ||
12342 | return 1; | |
12343 | } | |
12344 | ||
cd1608cc PA |
12345 | static int |
12346 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12347 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12348 | const struct target_waitstatus *ws) |
12349 | { | |
12350 | if (dprintf_style == dprintf_style_agent | |
12351 | && target_can_run_breakpoint_commands ()) | |
12352 | { | |
12353 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12354 | for this address it must be for a breakpoint that happens to | |
12355 | be set at the same address. */ | |
12356 | return 0; | |
12357 | } | |
12358 | ||
12359 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12360 | } | |
12361 | ||
2060206e | 12362 | static int |
348d480f PA |
12363 | bkpt_resources_needed (const struct bp_location *bl) |
12364 | { | |
12365 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12366 | ||
12367 | return 1; | |
12368 | } | |
12369 | ||
2060206e | 12370 | static enum print_stop_action |
348d480f PA |
12371 | bkpt_print_it (bpstat bs) |
12372 | { | |
348d480f PA |
12373 | struct breakpoint *b; |
12374 | const struct bp_location *bl; | |
001c8c33 | 12375 | int bp_temp; |
79a45e25 | 12376 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12377 | |
12378 | gdb_assert (bs->bp_location_at != NULL); | |
12379 | ||
12380 | bl = bs->bp_location_at; | |
12381 | b = bs->breakpoint_at; | |
12382 | ||
001c8c33 PA |
12383 | bp_temp = b->disposition == disp_del; |
12384 | if (bl->address != bl->requested_address) | |
12385 | breakpoint_adjustment_warning (bl->requested_address, | |
12386 | bl->address, | |
12387 | b->number, 1); | |
12388 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12389 | maybe_print_thread_hit_breakpoint (uiout); |
12390 | ||
001c8c33 | 12391 | if (bp_temp) |
112e8700 | 12392 | uiout->text ("Temporary breakpoint "); |
001c8c33 | 12393 | else |
112e8700 SM |
12394 | uiout->text ("Breakpoint "); |
12395 | if (uiout->is_mi_like_p ()) | |
348d480f | 12396 | { |
112e8700 | 12397 | uiout->field_string ("reason", |
001c8c33 | 12398 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12399 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12400 | } |
112e8700 SM |
12401 | uiout->field_int ("bkptno", b->number); |
12402 | uiout->text (", "); | |
06edf0c0 | 12403 | |
001c8c33 | 12404 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12405 | } |
12406 | ||
2060206e | 12407 | static void |
06edf0c0 PA |
12408 | bkpt_print_mention (struct breakpoint *b) |
12409 | { | |
112e8700 | 12410 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12411 | return; |
12412 | ||
12413 | switch (b->type) | |
12414 | { | |
12415 | case bp_breakpoint: | |
12416 | case bp_gnu_ifunc_resolver: | |
12417 | if (b->disposition == disp_del) | |
12418 | printf_filtered (_("Temporary breakpoint")); | |
12419 | else | |
12420 | printf_filtered (_("Breakpoint")); | |
12421 | printf_filtered (_(" %d"), b->number); | |
12422 | if (b->type == bp_gnu_ifunc_resolver) | |
12423 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12424 | break; | |
12425 | case bp_hardware_breakpoint: | |
12426 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12427 | break; | |
e7e0cddf SS |
12428 | case bp_dprintf: |
12429 | printf_filtered (_("Dprintf %d"), b->number); | |
12430 | break; | |
06edf0c0 PA |
12431 | } |
12432 | ||
12433 | say_where (b); | |
12434 | } | |
12435 | ||
2060206e | 12436 | static void |
06edf0c0 PA |
12437 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12438 | { | |
12439 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12440 | fprintf_unfiltered (fp, "tbreak"); | |
12441 | else if (tp->type == bp_breakpoint) | |
12442 | fprintf_unfiltered (fp, "break"); | |
12443 | else if (tp->type == bp_hardware_breakpoint | |
12444 | && tp->disposition == disp_del) | |
12445 | fprintf_unfiltered (fp, "thbreak"); | |
12446 | else if (tp->type == bp_hardware_breakpoint) | |
12447 | fprintf_unfiltered (fp, "hbreak"); | |
12448 | else | |
12449 | internal_error (__FILE__, __LINE__, | |
12450 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12451 | ||
f00aae0f | 12452 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12453 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12454 | |
12455 | /* Print out extra_string if this breakpoint is pending. It might | |
12456 | contain, for example, conditions that were set by the user. */ | |
12457 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12458 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12459 | ||
dd11a36c | 12460 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12461 | } |
12462 | ||
983af33b | 12463 | static void |
f00aae0f KS |
12464 | bkpt_create_sals_from_location (const struct event_location *location, |
12465 | struct linespec_result *canonical, | |
12466 | enum bptype type_wanted) | |
983af33b | 12467 | { |
f00aae0f | 12468 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12469 | } |
12470 | ||
12471 | static void | |
12472 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12473 | struct linespec_result *canonical, | |
e1e01040 PA |
12474 | gdb::unique_xmalloc_ptr<char> cond_string, |
12475 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12476 | enum bptype type_wanted, |
12477 | enum bpdisp disposition, | |
12478 | int thread, | |
12479 | int task, int ignore_count, | |
12480 | const struct breakpoint_ops *ops, | |
12481 | int from_tty, int enabled, | |
44f238bb | 12482 | int internal, unsigned flags) |
983af33b | 12483 | { |
023fa29b | 12484 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12485 | std::move (cond_string), |
12486 | std::move (extra_string), | |
e7e0cddf | 12487 | type_wanted, |
983af33b SDJ |
12488 | disposition, thread, task, |
12489 | ignore_count, ops, from_tty, | |
44f238bb | 12490 | enabled, internal, flags); |
983af33b SDJ |
12491 | } |
12492 | ||
6c5b2ebe | 12493 | static std::vector<symtab_and_line> |
f00aae0f KS |
12494 | bkpt_decode_location (struct breakpoint *b, |
12495 | const struct event_location *location, | |
6c5b2ebe | 12496 | struct program_space *search_pspace) |
983af33b | 12497 | { |
6c5b2ebe | 12498 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12499 | } |
12500 | ||
06edf0c0 PA |
12501 | /* Virtual table for internal breakpoints. */ |
12502 | ||
12503 | static void | |
12504 | internal_bkpt_re_set (struct breakpoint *b) | |
12505 | { | |
12506 | switch (b->type) | |
12507 | { | |
12508 | /* Delete overlay event and longjmp master breakpoints; they | |
12509 | will be reset later by breakpoint_re_set. */ | |
12510 | case bp_overlay_event: | |
12511 | case bp_longjmp_master: | |
12512 | case bp_std_terminate_master: | |
12513 | case bp_exception_master: | |
12514 | delete_breakpoint (b); | |
12515 | break; | |
12516 | ||
12517 | /* This breakpoint is special, it's set up when the inferior | |
12518 | starts and we really don't want to touch it. */ | |
12519 | case bp_shlib_event: | |
12520 | ||
12521 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12522 | it is set up, we do not want to touch it. */ | |
12523 | case bp_thread_event: | |
12524 | break; | |
12525 | } | |
12526 | } | |
12527 | ||
12528 | static void | |
12529 | internal_bkpt_check_status (bpstat bs) | |
12530 | { | |
a9b3a50f PA |
12531 | if (bs->breakpoint_at->type == bp_shlib_event) |
12532 | { | |
12533 | /* If requested, stop when the dynamic linker notifies GDB of | |
12534 | events. This allows the user to get control and place | |
12535 | breakpoints in initializer routines for dynamically loaded | |
12536 | objects (among other things). */ | |
12537 | bs->stop = stop_on_solib_events; | |
12538 | bs->print = stop_on_solib_events; | |
12539 | } | |
12540 | else | |
12541 | bs->stop = 0; | |
06edf0c0 PA |
12542 | } |
12543 | ||
12544 | static enum print_stop_action | |
12545 | internal_bkpt_print_it (bpstat bs) | |
12546 | { | |
06edf0c0 | 12547 | struct breakpoint *b; |
06edf0c0 | 12548 | |
06edf0c0 PA |
12549 | b = bs->breakpoint_at; |
12550 | ||
06edf0c0 PA |
12551 | switch (b->type) |
12552 | { | |
348d480f PA |
12553 | case bp_shlib_event: |
12554 | /* Did we stop because the user set the stop_on_solib_events | |
12555 | variable? (If so, we report this as a generic, "Stopped due | |
12556 | to shlib event" message.) */ | |
edcc5120 | 12557 | print_solib_event (0); |
348d480f PA |
12558 | break; |
12559 | ||
12560 | case bp_thread_event: | |
12561 | /* Not sure how we will get here. | |
12562 | GDB should not stop for these breakpoints. */ | |
12563 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12564 | break; |
12565 | ||
12566 | case bp_overlay_event: | |
12567 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12568 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12569 | break; |
12570 | ||
12571 | case bp_longjmp_master: | |
12572 | /* These should never be enabled. */ | |
12573 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12574 | break; |
12575 | ||
12576 | case bp_std_terminate_master: | |
12577 | /* These should never be enabled. */ | |
12578 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12579 | "gdb should not stop!\n")); | |
348d480f PA |
12580 | break; |
12581 | ||
12582 | case bp_exception_master: | |
12583 | /* These should never be enabled. */ | |
12584 | printf_filtered (_("Exception Master Breakpoint: " | |
12585 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12586 | break; |
12587 | } | |
12588 | ||
001c8c33 | 12589 | return PRINT_NOTHING; |
06edf0c0 PA |
12590 | } |
12591 | ||
12592 | static void | |
12593 | internal_bkpt_print_mention (struct breakpoint *b) | |
12594 | { | |
12595 | /* Nothing to mention. These breakpoints are internal. */ | |
12596 | } | |
12597 | ||
06edf0c0 PA |
12598 | /* Virtual table for momentary breakpoints */ |
12599 | ||
12600 | static void | |
12601 | momentary_bkpt_re_set (struct breakpoint *b) | |
12602 | { | |
12603 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12604 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12605 | Otherwise these should have been blown away via the cleanup chain |
12606 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12607 | } | |
12608 | ||
12609 | static void | |
12610 | momentary_bkpt_check_status (bpstat bs) | |
12611 | { | |
12612 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12613 | } | |
12614 | ||
12615 | static enum print_stop_action | |
12616 | momentary_bkpt_print_it (bpstat bs) | |
12617 | { | |
001c8c33 | 12618 | return PRINT_UNKNOWN; |
348d480f PA |
12619 | } |
12620 | ||
06edf0c0 PA |
12621 | static void |
12622 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12623 | { |
06edf0c0 | 12624 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12625 | } |
12626 | ||
e2e4d78b JK |
12627 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12628 | ||
12629 | It gets cleared already on the removal of the first one of such placed | |
12630 | breakpoints. This is OK as they get all removed altogether. */ | |
12631 | ||
c1fc2657 | 12632 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12633 | { |
c1fc2657 | 12634 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12635 | |
c1fc2657 | 12636 | if (tp != NULL) |
e2e4d78b | 12637 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12638 | } |
12639 | ||
55aa24fb SDJ |
12640 | /* Specific methods for probe breakpoints. */ |
12641 | ||
12642 | static int | |
12643 | bkpt_probe_insert_location (struct bp_location *bl) | |
12644 | { | |
12645 | int v = bkpt_insert_location (bl); | |
12646 | ||
12647 | if (v == 0) | |
12648 | { | |
12649 | /* The insertion was successful, now let's set the probe's semaphore | |
12650 | if needed. */ | |
935676c9 | 12651 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12652 | } |
12653 | ||
12654 | return v; | |
12655 | } | |
12656 | ||
12657 | static int | |
73971819 PA |
12658 | bkpt_probe_remove_location (struct bp_location *bl, |
12659 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12660 | { |
12661 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12662 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12663 | |
73971819 | 12664 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12665 | } |
12666 | ||
12667 | static void | |
f00aae0f | 12668 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12669 | struct linespec_result *canonical, |
f00aae0f | 12670 | enum bptype type_wanted) |
55aa24fb SDJ |
12671 | { |
12672 | struct linespec_sals lsal; | |
12673 | ||
c2f4122d | 12674 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12675 | lsal.canonical |
12676 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12677 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12678 | } |
12679 | ||
6c5b2ebe | 12680 | static std::vector<symtab_and_line> |
f00aae0f KS |
12681 | bkpt_probe_decode_location (struct breakpoint *b, |
12682 | const struct event_location *location, | |
6c5b2ebe | 12683 | struct program_space *search_pspace) |
55aa24fb | 12684 | { |
6c5b2ebe PA |
12685 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12686 | if (sals.empty ()) | |
55aa24fb | 12687 | error (_("probe not found")); |
6c5b2ebe | 12688 | return sals; |
55aa24fb SDJ |
12689 | } |
12690 | ||
348d480f | 12691 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12692 | |
348d480f PA |
12693 | static void |
12694 | tracepoint_re_set (struct breakpoint *b) | |
12695 | { | |
12696 | breakpoint_re_set_default (b); | |
12697 | } | |
876fa593 | 12698 | |
348d480f PA |
12699 | static int |
12700 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12701 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12702 | const struct target_waitstatus *ws) |
348d480f PA |
12703 | { |
12704 | /* By definition, the inferior does not report stops at | |
12705 | tracepoints. */ | |
12706 | return 0; | |
74960c60 VP |
12707 | } |
12708 | ||
12709 | static void | |
348d480f PA |
12710 | tracepoint_print_one_detail (const struct breakpoint *self, |
12711 | struct ui_out *uiout) | |
74960c60 | 12712 | { |
d9b3f62e | 12713 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12714 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12715 | { |
12716 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12717 | |
112e8700 SM |
12718 | uiout->text ("\tmarker id is "); |
12719 | uiout->field_string ("static-tracepoint-marker-string-id", | |
d9b3f62e | 12720 | tp->static_trace_marker_id); |
112e8700 | 12721 | uiout->text ("\n"); |
348d480f | 12722 | } |
0d381245 VP |
12723 | } |
12724 | ||
a474d7c2 | 12725 | static void |
348d480f | 12726 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12727 | { |
112e8700 | 12728 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12729 | return; |
cc59ec59 | 12730 | |
348d480f PA |
12731 | switch (b->type) |
12732 | { | |
12733 | case bp_tracepoint: | |
12734 | printf_filtered (_("Tracepoint")); | |
12735 | printf_filtered (_(" %d"), b->number); | |
12736 | break; | |
12737 | case bp_fast_tracepoint: | |
12738 | printf_filtered (_("Fast tracepoint")); | |
12739 | printf_filtered (_(" %d"), b->number); | |
12740 | break; | |
12741 | case bp_static_tracepoint: | |
12742 | printf_filtered (_("Static tracepoint")); | |
12743 | printf_filtered (_(" %d"), b->number); | |
12744 | break; | |
12745 | default: | |
12746 | internal_error (__FILE__, __LINE__, | |
12747 | _("unhandled tracepoint type %d"), (int) b->type); | |
12748 | } | |
12749 | ||
12750 | say_where (b); | |
a474d7c2 PA |
12751 | } |
12752 | ||
348d480f | 12753 | static void |
d9b3f62e | 12754 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12755 | { |
d9b3f62e PA |
12756 | struct tracepoint *tp = (struct tracepoint *) self; |
12757 | ||
12758 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12759 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12760 | else if (self->type == bp_static_tracepoint) |
348d480f | 12761 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12762 | else if (self->type == bp_tracepoint) |
348d480f PA |
12763 | fprintf_unfiltered (fp, "trace"); |
12764 | else | |
12765 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12766 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12767 | |
f00aae0f | 12768 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12769 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12770 | print_recreate_thread (self, fp); |
12771 | ||
12772 | if (tp->pass_count) | |
12773 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12774 | } |
12775 | ||
983af33b | 12776 | static void |
f00aae0f KS |
12777 | tracepoint_create_sals_from_location (const struct event_location *location, |
12778 | struct linespec_result *canonical, | |
12779 | enum bptype type_wanted) | |
983af33b | 12780 | { |
f00aae0f | 12781 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12782 | } |
12783 | ||
12784 | static void | |
12785 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12786 | struct linespec_result *canonical, | |
e1e01040 PA |
12787 | gdb::unique_xmalloc_ptr<char> cond_string, |
12788 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12789 | enum bptype type_wanted, |
12790 | enum bpdisp disposition, | |
12791 | int thread, | |
12792 | int task, int ignore_count, | |
12793 | const struct breakpoint_ops *ops, | |
12794 | int from_tty, int enabled, | |
44f238bb | 12795 | int internal, unsigned flags) |
983af33b | 12796 | { |
023fa29b | 12797 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12798 | std::move (cond_string), |
12799 | std::move (extra_string), | |
e7e0cddf | 12800 | type_wanted, |
983af33b SDJ |
12801 | disposition, thread, task, |
12802 | ignore_count, ops, from_tty, | |
44f238bb | 12803 | enabled, internal, flags); |
983af33b SDJ |
12804 | } |
12805 | ||
6c5b2ebe | 12806 | static std::vector<symtab_and_line> |
f00aae0f KS |
12807 | tracepoint_decode_location (struct breakpoint *b, |
12808 | const struct event_location *location, | |
6c5b2ebe | 12809 | struct program_space *search_pspace) |
983af33b | 12810 | { |
6c5b2ebe | 12811 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12812 | } |
12813 | ||
2060206e | 12814 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12815 | |
55aa24fb SDJ |
12816 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12817 | static probe. */ | |
12818 | ||
12819 | static void | |
f00aae0f KS |
12820 | tracepoint_probe_create_sals_from_location |
12821 | (const struct event_location *location, | |
12822 | struct linespec_result *canonical, | |
12823 | enum bptype type_wanted) | |
55aa24fb SDJ |
12824 | { |
12825 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12826 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12827 | } |
12828 | ||
6c5b2ebe | 12829 | static std::vector<symtab_and_line> |
f00aae0f KS |
12830 | tracepoint_probe_decode_location (struct breakpoint *b, |
12831 | const struct event_location *location, | |
6c5b2ebe | 12832 | struct program_space *search_pspace) |
55aa24fb SDJ |
12833 | { |
12834 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12835 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12836 | } |
12837 | ||
12838 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12839 | ||
5c2b4418 HZ |
12840 | /* Dprintf breakpoint_ops methods. */ |
12841 | ||
12842 | static void | |
12843 | dprintf_re_set (struct breakpoint *b) | |
12844 | { | |
12845 | breakpoint_re_set_default (b); | |
12846 | ||
f00aae0f KS |
12847 | /* extra_string should never be non-NULL for dprintf. */ |
12848 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12849 | |
12850 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12851 | 2 - create a dprintf, which resolves fine. | |
12852 | 3 - disconnect from target 1 | |
12853 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12854 | ||
12855 | After steps #3/#4, you'll want the dprintf command list to | |
12856 | be updated, because target 1 and 2 may well return different | |
12857 | answers for target_can_run_breakpoint_commands(). | |
12858 | Given absence of finer grained resetting, we get to do | |
12859 | it all the time. */ | |
12860 | if (b->extra_string != NULL) | |
12861 | update_dprintf_command_list (b); | |
12862 | } | |
12863 | ||
2d9442cc HZ |
12864 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12865 | ||
12866 | static void | |
12867 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12868 | { | |
f00aae0f | 12869 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12870 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12871 | tp->extra_string); |
12872 | print_recreate_thread (tp, fp); | |
12873 | } | |
12874 | ||
9d6e6e84 HZ |
12875 | /* Implement the "after_condition_true" breakpoint_ops method for |
12876 | dprintf. | |
12877 | ||
12878 | dprintf's are implemented with regular commands in their command | |
12879 | list, but we run the commands here instead of before presenting the | |
12880 | stop to the user, as dprintf's don't actually cause a stop. This | |
12881 | also makes it so that the commands of multiple dprintfs at the same | |
12882 | address are all handled. */ | |
12883 | ||
12884 | static void | |
12885 | dprintf_after_condition_true (struct bpstats *bs) | |
12886 | { | |
04afa70c | 12887 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12888 | struct bpstats *tmp_bs_p = &tmp_bs; |
12889 | ||
12890 | /* dprintf's never cause a stop. This wasn't set in the | |
12891 | check_status hook instead because that would make the dprintf's | |
12892 | condition not be evaluated. */ | |
12893 | bs->stop = 0; | |
12894 | ||
12895 | /* Run the command list here. Take ownership of it instead of | |
12896 | copying. We never want these commands to run later in | |
12897 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12898 | be set at same address as this dprintf, or even if running the | |
12899 | commands here throws. */ | |
12900 | tmp_bs.commands = bs->commands; | |
12901 | bs->commands = NULL; | |
9d6e6e84 HZ |
12902 | |
12903 | bpstat_do_actions_1 (&tmp_bs_p); | |
12904 | ||
12905 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12906 | bpstat_do_actions_1 may return early without processing the whole | |
12907 | list. */ | |
9d6e6e84 HZ |
12908 | } |
12909 | ||
983af33b SDJ |
12910 | /* The breakpoint_ops structure to be used on static tracepoints with |
12911 | markers (`-m'). */ | |
12912 | ||
12913 | static void | |
f00aae0f | 12914 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12915 | struct linespec_result *canonical, |
f00aae0f | 12916 | enum bptype type_wanted) |
983af33b SDJ |
12917 | { |
12918 | struct linespec_sals lsal; | |
f00aae0f | 12919 | const char *arg_start, *arg; |
983af33b | 12920 | |
a20714ff | 12921 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12922 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12923 | |
f2fc3015 TT |
12924 | std::string str (arg_start, arg - arg_start); |
12925 | const char *ptr = str.c_str (); | |
a20714ff PA |
12926 | canonical->location |
12927 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12928 | |
8e9e35b1 TT |
12929 | lsal.canonical |
12930 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12931 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12932 | } |
12933 | ||
12934 | static void | |
12935 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12936 | struct linespec_result *canonical, | |
e1e01040 PA |
12937 | gdb::unique_xmalloc_ptr<char> cond_string, |
12938 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12939 | enum bptype type_wanted, |
12940 | enum bpdisp disposition, | |
12941 | int thread, | |
12942 | int task, int ignore_count, | |
12943 | const struct breakpoint_ops *ops, | |
12944 | int from_tty, int enabled, | |
44f238bb | 12945 | int internal, unsigned flags) |
983af33b | 12946 | { |
6c5b2ebe | 12947 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12948 | |
12949 | /* If the user is creating a static tracepoint by marker id | |
12950 | (strace -m MARKER_ID), then store the sals index, so that | |
12951 | breakpoint_re_set can try to match up which of the newly | |
12952 | found markers corresponds to this one, and, don't try to | |
12953 | expand multiple locations for each sal, given than SALS | |
12954 | already should contain all sals for MARKER_ID. */ | |
12955 | ||
6c5b2ebe | 12956 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12957 | { |
6c5b2ebe PA |
12958 | event_location_up location |
12959 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12960 | |
b270e6f9 | 12961 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 12962 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 12963 | std::move (location), NULL, |
e1e01040 PA |
12964 | std::move (cond_string), |
12965 | std::move (extra_string), | |
e7e0cddf | 12966 | type_wanted, disposition, |
983af33b | 12967 | thread, task, ignore_count, ops, |
44f238bb | 12968 | from_tty, enabled, internal, flags, |
983af33b SDJ |
12969 | canonical->special_display); |
12970 | /* Given that its possible to have multiple markers with | |
12971 | the same string id, if the user is creating a static | |
12972 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12973 | store the sals index, so that breakpoint_re_set can | |
12974 | try to match up which of the newly found markers | |
12975 | corresponds to this one */ | |
12976 | tp->static_trace_marker_id_idx = i; | |
12977 | ||
b270e6f9 | 12978 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12979 | } |
12980 | } | |
12981 | ||
6c5b2ebe | 12982 | static std::vector<symtab_and_line> |
f00aae0f KS |
12983 | strace_marker_decode_location (struct breakpoint *b, |
12984 | const struct event_location *location, | |
6c5b2ebe | 12985 | struct program_space *search_pspace) |
983af33b SDJ |
12986 | { |
12987 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 12988 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 12989 | |
6c5b2ebe PA |
12990 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
12991 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 12992 | { |
6c5b2ebe PA |
12993 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
12994 | sals.resize (1); | |
12995 | return sals; | |
983af33b SDJ |
12996 | } |
12997 | else | |
5d9310c4 | 12998 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
12999 | } |
13000 | ||
13001 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13002 | ||
13003 | static int | |
13004 | strace_marker_p (struct breakpoint *b) | |
13005 | { | |
13006 | return b->ops == &strace_marker_breakpoint_ops; | |
13007 | } | |
13008 | ||
53a5351d | 13009 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13010 | structures. */ |
c906108c SS |
13011 | |
13012 | void | |
fba45db2 | 13013 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13014 | { |
52f0bd74 | 13015 | struct breakpoint *b; |
c906108c | 13016 | |
8a3fe4f8 | 13017 | gdb_assert (bpt != NULL); |
c906108c | 13018 | |
4a64f543 MS |
13019 | /* Has this bp already been deleted? This can happen because |
13020 | multiple lists can hold pointers to bp's. bpstat lists are | |
13021 | especial culprits. | |
13022 | ||
13023 | One example of this happening is a watchpoint's scope bp. When | |
13024 | the scope bp triggers, we notice that the watchpoint is out of | |
13025 | scope, and delete it. We also delete its scope bp. But the | |
13026 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13027 | That bpstat is then checked for auto-deleting bp's, which are | |
13028 | deleted. | |
13029 | ||
13030 | A real solution to this problem might involve reference counts in | |
13031 | bp's, and/or giving them pointers back to their referencing | |
13032 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13033 | storage when no more references were extent. A cheaper bandaid | |
13034 | was chosen. */ | |
c906108c SS |
13035 | if (bpt->type == bp_none) |
13036 | return; | |
13037 | ||
4a64f543 MS |
13038 | /* At least avoid this stale reference until the reference counting |
13039 | of breakpoints gets resolved. */ | |
d0fb5eae | 13040 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13041 | { |
d0fb5eae | 13042 | struct breakpoint *related; |
3a5c3e22 | 13043 | struct watchpoint *w; |
d0fb5eae JK |
13044 | |
13045 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13046 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13047 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13048 | w = (struct watchpoint *) bpt; |
13049 | else | |
13050 | w = NULL; | |
13051 | if (w != NULL) | |
13052 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13053 | |
13054 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13055 | for (related = bpt; related->related_breakpoint != bpt; | |
13056 | related = related->related_breakpoint); | |
13057 | related->related_breakpoint = bpt->related_breakpoint; | |
13058 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13059 | } |
13060 | ||
a9634178 TJB |
13061 | /* watch_command_1 creates a watchpoint but only sets its number if |
13062 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13063 | a problem in that process, we'll be asked to delete the half-created | |
13064 | watchpoint. In that case, don't announce the deletion. */ | |
13065 | if (bpt->number) | |
76727919 | 13066 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13067 | |
c906108c SS |
13068 | if (breakpoint_chain == bpt) |
13069 | breakpoint_chain = bpt->next; | |
13070 | ||
c906108c SS |
13071 | ALL_BREAKPOINTS (b) |
13072 | if (b->next == bpt) | |
c5aa993b JM |
13073 | { |
13074 | b->next = bpt->next; | |
13075 | break; | |
13076 | } | |
c906108c | 13077 | |
f431efe5 PA |
13078 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13079 | been freed. */ | |
13080 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13081 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13082 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13083 | commands are associated with the bpstat; if we remove it here, | |
13084 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13085 | event-top.c won't do anything, and temporary breakpoints with | |
13086 | commands won't work. */ | |
13087 | ||
13088 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13089 | ||
4a64f543 MS |
13090 | /* Now that breakpoint is removed from breakpoint list, update the |
13091 | global location list. This will remove locations that used to | |
13092 | belong to this breakpoint. Do this before freeing the breakpoint | |
13093 | itself, since remove_breakpoint looks at location's owner. It | |
13094 | might be better design to have location completely | |
13095 | self-contained, but it's not the case now. */ | |
44702360 | 13096 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13097 | |
4a64f543 MS |
13098 | /* On the chance that someone will soon try again to delete this |
13099 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13100 | bpt->type = bp_none; |
4d01a485 | 13101 | delete bpt; |
c906108c SS |
13102 | } |
13103 | ||
51be5b68 PA |
13104 | /* Iterator function to call a user-provided callback function once |
13105 | for each of B and its related breakpoints. */ | |
13106 | ||
13107 | static void | |
13108 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13109 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13110 | { |
13111 | struct breakpoint *related; | |
13112 | ||
13113 | related = b; | |
13114 | do | |
13115 | { | |
13116 | struct breakpoint *next; | |
13117 | ||
13118 | /* FUNCTION may delete RELATED. */ | |
13119 | next = related->related_breakpoint; | |
13120 | ||
13121 | if (next == related) | |
13122 | { | |
13123 | /* RELATED is the last ring entry. */ | |
48649e1b | 13124 | function (related); |
51be5b68 PA |
13125 | |
13126 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13127 | B. There's nothing left to do anyway, so just break | |
13128 | out. */ | |
13129 | break; | |
13130 | } | |
13131 | else | |
48649e1b | 13132 | function (related); |
51be5b68 PA |
13133 | |
13134 | related = next; | |
13135 | } | |
13136 | while (related != b); | |
13137 | } | |
95a42b64 | 13138 | |
4495129a | 13139 | static void |
981a3fb3 | 13140 | delete_command (const char *arg, int from_tty) |
c906108c | 13141 | { |
35df4500 | 13142 | struct breakpoint *b, *b_tmp; |
c906108c | 13143 | |
ea9365bb TT |
13144 | dont_repeat (); |
13145 | ||
c906108c SS |
13146 | if (arg == 0) |
13147 | { | |
13148 | int breaks_to_delete = 0; | |
13149 | ||
46c6471b PA |
13150 | /* Delete all breakpoints if no argument. Do not delete |
13151 | internal breakpoints, these have to be deleted with an | |
13152 | explicit breakpoint number argument. */ | |
c5aa993b | 13153 | ALL_BREAKPOINTS (b) |
46c6471b | 13154 | if (user_breakpoint_p (b)) |
973d738b DJ |
13155 | { |
13156 | breaks_to_delete = 1; | |
13157 | break; | |
13158 | } | |
c906108c SS |
13159 | |
13160 | /* Ask user only if there are some breakpoints to delete. */ | |
13161 | if (!from_tty | |
e2e0b3e5 | 13162 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13163 | { |
35df4500 | 13164 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13165 | if (user_breakpoint_p (b)) |
c5aa993b | 13166 | delete_breakpoint (b); |
c906108c SS |
13167 | } |
13168 | } | |
13169 | else | |
48649e1b | 13170 | map_breakpoint_numbers |
b926417a | 13171 | (arg, [&] (breakpoint *br) |
48649e1b | 13172 | { |
b926417a | 13173 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13174 | }); |
c906108c SS |
13175 | } |
13176 | ||
c2f4122d PA |
13177 | /* Return true if all locations of B bound to PSPACE are pending. If |
13178 | PSPACE is NULL, all locations of all program spaces are | |
13179 | considered. */ | |
13180 | ||
0d381245 | 13181 | static int |
c2f4122d | 13182 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13183 | { |
c2f4122d PA |
13184 | struct bp_location *loc; |
13185 | ||
13186 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13187 | if ((pspace == NULL | |
13188 | || loc->pspace == pspace) | |
13189 | && !loc->shlib_disabled | |
8645ff69 | 13190 | && !loc->pspace->executing_startup) |
0d381245 VP |
13191 | return 0; |
13192 | return 1; | |
fe3f5fa8 VP |
13193 | } |
13194 | ||
776592bf DE |
13195 | /* Subroutine of update_breakpoint_locations to simplify it. |
13196 | Return non-zero if multiple fns in list LOC have the same name. | |
13197 | Null names are ignored. */ | |
13198 | ||
13199 | static int | |
13200 | ambiguous_names_p (struct bp_location *loc) | |
13201 | { | |
13202 | struct bp_location *l; | |
459a2e4c TT |
13203 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13204 | xcalloc, xfree); | |
776592bf DE |
13205 | |
13206 | for (l = loc; l != NULL; l = l->next) | |
13207 | { | |
13208 | const char **slot; | |
13209 | const char *name = l->function_name; | |
13210 | ||
13211 | /* Allow for some names to be NULL, ignore them. */ | |
13212 | if (name == NULL) | |
13213 | continue; | |
13214 | ||
13215 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13216 | INSERT); | |
4a64f543 MS |
13217 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13218 | returns NULL. */ | |
776592bf DE |
13219 | if (*slot != NULL) |
13220 | { | |
13221 | htab_delete (htab); | |
13222 | return 1; | |
13223 | } | |
13224 | *slot = name; | |
13225 | } | |
13226 | ||
13227 | htab_delete (htab); | |
13228 | return 0; | |
13229 | } | |
13230 | ||
0fb4aa4b PA |
13231 | /* When symbols change, it probably means the sources changed as well, |
13232 | and it might mean the static tracepoint markers are no longer at | |
13233 | the same address or line numbers they used to be at last we | |
13234 | checked. Losing your static tracepoints whenever you rebuild is | |
13235 | undesirable. This function tries to resync/rematch gdb static | |
13236 | tracepoints with the markers on the target, for static tracepoints | |
13237 | that have not been set by marker id. Static tracepoint that have | |
13238 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13239 | The heuristic is: | |
13240 | ||
13241 | 1) For a tracepoint set at a specific address, look for a marker at | |
13242 | the old PC. If one is found there, assume to be the same marker. | |
13243 | If the name / string id of the marker found is different from the | |
13244 | previous known name, assume that means the user renamed the marker | |
13245 | in the sources, and output a warning. | |
13246 | ||
13247 | 2) For a tracepoint set at a given line number, look for a marker | |
13248 | at the new address of the old line number. If one is found there, | |
13249 | assume to be the same marker. If the name / string id of the | |
13250 | marker found is different from the previous known name, assume that | |
13251 | means the user renamed the marker in the sources, and output a | |
13252 | warning. | |
13253 | ||
13254 | 3) If a marker is no longer found at the same address or line, it | |
13255 | may mean the marker no longer exists. But it may also just mean | |
13256 | the code changed a bit. Maybe the user added a few lines of code | |
13257 | that made the marker move up or down (in line number terms). Ask | |
13258 | the target for info about the marker with the string id as we knew | |
13259 | it. If found, update line number and address in the matching | |
13260 | static tracepoint. This will get confused if there's more than one | |
13261 | marker with the same ID (possible in UST, although unadvised | |
13262 | precisely because it confuses tools). */ | |
13263 | ||
13264 | static struct symtab_and_line | |
13265 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13266 | { | |
d9b3f62e | 13267 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13268 | struct static_tracepoint_marker marker; |
13269 | CORE_ADDR pc; | |
0fb4aa4b PA |
13270 | |
13271 | pc = sal.pc; | |
13272 | if (sal.line) | |
13273 | find_line_pc (sal.symtab, sal.line, &pc); | |
13274 | ||
13275 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13276 | { | |
5d9310c4 | 13277 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13278 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13279 | b->number, tp->static_trace_marker_id.c_str (), |
13280 | marker.str_id.c_str ()); | |
0fb4aa4b | 13281 | |
5d9310c4 | 13282 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13283 | |
13284 | return sal; | |
13285 | } | |
13286 | ||
13287 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13288 | by string ID. */ | |
13289 | if (!sal.explicit_pc | |
13290 | && sal.line != 0 | |
13291 | && sal.symtab != NULL | |
5d9310c4 | 13292 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13293 | { |
5d9310c4 SM |
13294 | std::vector<static_tracepoint_marker> markers |
13295 | = target_static_tracepoint_markers_by_strid | |
13296 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13297 | |
5d9310c4 | 13298 | if (!markers.empty ()) |
0fb4aa4b | 13299 | { |
0fb4aa4b | 13300 | struct symbol *sym; |
80e1d417 | 13301 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13302 | struct ui_out *uiout = current_uiout; |
67994074 | 13303 | struct explicit_location explicit_loc; |
0fb4aa4b | 13304 | |
5d9310c4 | 13305 | tpmarker = &markers[0]; |
0fb4aa4b | 13306 | |
5d9310c4 | 13307 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13308 | |
13309 | warning (_("marker for static tracepoint %d (%s) not " | |
13310 | "found at previous line number"), | |
5d9310c4 | 13311 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13312 | |
51abb421 | 13313 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13314 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13315 | uiout->text ("Now in "); |
0fb4aa4b PA |
13316 | if (sym) |
13317 | { | |
cbe56571 TT |
13318 | uiout->field_string ("func", SYMBOL_PRINT_NAME (sym), |
13319 | ui_out_style_kind::FUNCTION); | |
112e8700 | 13320 | uiout->text (" at "); |
0fb4aa4b | 13321 | } |
112e8700 | 13322 | uiout->field_string ("file", |
cbe56571 TT |
13323 | symtab_to_filename_for_display (sal2.symtab), |
13324 | ui_out_style_kind::FILE); | |
112e8700 | 13325 | uiout->text (":"); |
0fb4aa4b | 13326 | |
112e8700 | 13327 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13328 | { |
0b0865da | 13329 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13330 | |
112e8700 | 13331 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13332 | } |
13333 | ||
112e8700 SM |
13334 | uiout->field_int ("line", sal2.line); |
13335 | uiout->text ("\n"); | |
0fb4aa4b | 13336 | |
80e1d417 | 13337 | b->loc->line_number = sal2.line; |
2f202fde | 13338 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13339 | |
d28cd78a | 13340 | b->location.reset (NULL); |
67994074 KS |
13341 | initialize_explicit_location (&explicit_loc); |
13342 | explicit_loc.source_filename | |
00e52e53 | 13343 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13344 | explicit_loc.line_offset.offset = b->loc->line_number; |
13345 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13346 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13347 | |
13348 | /* Might be nice to check if function changed, and warn if | |
13349 | so. */ | |
0fb4aa4b PA |
13350 | } |
13351 | } | |
13352 | return sal; | |
13353 | } | |
13354 | ||
8d3788bd VP |
13355 | /* Returns 1 iff locations A and B are sufficiently same that |
13356 | we don't need to report breakpoint as changed. */ | |
13357 | ||
13358 | static int | |
13359 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13360 | { | |
13361 | while (a && b) | |
13362 | { | |
13363 | if (a->address != b->address) | |
13364 | return 0; | |
13365 | ||
13366 | if (a->shlib_disabled != b->shlib_disabled) | |
13367 | return 0; | |
13368 | ||
13369 | if (a->enabled != b->enabled) | |
13370 | return 0; | |
13371 | ||
13372 | a = a->next; | |
13373 | b = b->next; | |
13374 | } | |
13375 | ||
13376 | if ((a == NULL) != (b == NULL)) | |
13377 | return 0; | |
13378 | ||
13379 | return 1; | |
13380 | } | |
13381 | ||
c2f4122d PA |
13382 | /* Split all locations of B that are bound to PSPACE out of B's |
13383 | location list to a separate list and return that list's head. If | |
13384 | PSPACE is NULL, hoist out all locations of B. */ | |
13385 | ||
13386 | static struct bp_location * | |
13387 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13388 | { | |
13389 | struct bp_location head; | |
13390 | struct bp_location *i = b->loc; | |
13391 | struct bp_location **i_link = &b->loc; | |
13392 | struct bp_location *hoisted = &head; | |
13393 | ||
13394 | if (pspace == NULL) | |
13395 | { | |
13396 | i = b->loc; | |
13397 | b->loc = NULL; | |
13398 | return i; | |
13399 | } | |
13400 | ||
13401 | head.next = NULL; | |
13402 | ||
13403 | while (i != NULL) | |
13404 | { | |
13405 | if (i->pspace == pspace) | |
13406 | { | |
13407 | *i_link = i->next; | |
13408 | i->next = NULL; | |
13409 | hoisted->next = i; | |
13410 | hoisted = i; | |
13411 | } | |
13412 | else | |
13413 | i_link = &i->next; | |
13414 | i = *i_link; | |
13415 | } | |
13416 | ||
13417 | return head.next; | |
13418 | } | |
13419 | ||
13420 | /* Create new breakpoint locations for B (a hardware or software | |
13421 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13422 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13423 | FILTER_PSPACE. Locations of other program spaces are left | |
13424 | untouched. */ | |
f1310107 | 13425 | |
0e30163f | 13426 | void |
0d381245 | 13427 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13428 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13429 | gdb::array_view<const symtab_and_line> sals, |
13430 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13431 | { |
c2f4122d | 13432 | struct bp_location *existing_locations; |
0d381245 | 13433 | |
6c5b2ebe | 13434 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13435 | { |
13436 | /* Ranged breakpoints have only one start location and one end | |
13437 | location. */ | |
13438 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13439 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13440 | "multiple locations found\n"), | |
13441 | b->number); | |
13442 | return; | |
13443 | } | |
f1310107 | 13444 | |
4a64f543 MS |
13445 | /* If there's no new locations, and all existing locations are |
13446 | pending, don't do anything. This optimizes the common case where | |
13447 | all locations are in the same shared library, that was unloaded. | |
13448 | We'd like to retain the location, so that when the library is | |
13449 | loaded again, we don't loose the enabled/disabled status of the | |
13450 | individual locations. */ | |
6c5b2ebe | 13451 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13452 | return; |
13453 | ||
c2f4122d | 13454 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13455 | |
6c5b2ebe | 13456 | for (const auto &sal : sals) |
fe3f5fa8 | 13457 | { |
f8eba3c6 TT |
13458 | struct bp_location *new_loc; |
13459 | ||
6c5b2ebe | 13460 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13461 | |
6c5b2ebe | 13462 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13463 | |
0d381245 VP |
13464 | /* Reparse conditions, they might contain references to the |
13465 | old symtab. */ | |
13466 | if (b->cond_string != NULL) | |
13467 | { | |
bbc13ae3 | 13468 | const char *s; |
fe3f5fa8 | 13469 | |
0d381245 | 13470 | s = b->cond_string; |
a70b8144 | 13471 | try |
0d381245 | 13472 | { |
6c5b2ebe PA |
13473 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13474 | block_for_pc (sal.pc), | |
0d381245 VP |
13475 | 0); |
13476 | } | |
230d2906 | 13477 | catch (const gdb_exception_error &e) |
0d381245 | 13478 | { |
3e43a32a MS |
13479 | warning (_("failed to reevaluate condition " |
13480 | "for breakpoint %d: %s"), | |
3d6e9d23 | 13481 | b->number, e.what ()); |
0d381245 VP |
13482 | new_loc->enabled = 0; |
13483 | } | |
13484 | } | |
fe3f5fa8 | 13485 | |
6c5b2ebe | 13486 | if (!sals_end.empty ()) |
f1310107 | 13487 | { |
6c5b2ebe | 13488 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13489 | |
6c5b2ebe | 13490 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13491 | } |
0d381245 | 13492 | } |
fe3f5fa8 | 13493 | |
4a64f543 MS |
13494 | /* If possible, carry over 'disable' status from existing |
13495 | breakpoints. */ | |
0d381245 VP |
13496 | { |
13497 | struct bp_location *e = existing_locations; | |
776592bf DE |
13498 | /* If there are multiple breakpoints with the same function name, |
13499 | e.g. for inline functions, comparing function names won't work. | |
13500 | Instead compare pc addresses; this is just a heuristic as things | |
13501 | may have moved, but in practice it gives the correct answer | |
13502 | often enough until a better solution is found. */ | |
13503 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13504 | ||
0d381245 VP |
13505 | for (; e; e = e->next) |
13506 | { | |
13507 | if (!e->enabled && e->function_name) | |
13508 | { | |
13509 | struct bp_location *l = b->loc; | |
776592bf DE |
13510 | if (have_ambiguous_names) |
13511 | { | |
13512 | for (; l; l = l->next) | |
f1310107 | 13513 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13514 | { |
13515 | l->enabled = 0; | |
13516 | break; | |
13517 | } | |
13518 | } | |
13519 | else | |
13520 | { | |
13521 | for (; l; l = l->next) | |
13522 | if (l->function_name | |
13523 | && strcmp (e->function_name, l->function_name) == 0) | |
13524 | { | |
13525 | l->enabled = 0; | |
13526 | break; | |
13527 | } | |
13528 | } | |
0d381245 VP |
13529 | } |
13530 | } | |
13531 | } | |
fe3f5fa8 | 13532 | |
8d3788bd | 13533 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13534 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13535 | } |
13536 | ||
f00aae0f | 13537 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13538 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13539 | ||
6c5b2ebe | 13540 | static std::vector<symtab_and_line> |
f00aae0f | 13541 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13542 | struct program_space *search_pspace, int *found) |
ef23e705 | 13543 | { |
cc06b668 | 13544 | struct gdb_exception exception; |
ef23e705 | 13545 | |
983af33b | 13546 | gdb_assert (b->ops != NULL); |
ef23e705 | 13547 | |
6c5b2ebe PA |
13548 | std::vector<symtab_and_line> sals; |
13549 | ||
a70b8144 | 13550 | try |
ef23e705 | 13551 | { |
6c5b2ebe | 13552 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13553 | } |
94aeb44b | 13554 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13555 | { |
13556 | int not_found_and_ok = 0; | |
492d29ea | 13557 | |
ef23e705 TJB |
13558 | /* For pending breakpoints, it's expected that parsing will |
13559 | fail until the right shared library is loaded. User has | |
13560 | already told to create pending breakpoints and don't need | |
13561 | extra messages. If breakpoint is in bp_shlib_disabled | |
13562 | state, then user already saw the message about that | |
13563 | breakpoint being disabled, and don't want to see more | |
13564 | errors. */ | |
58438ac1 | 13565 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13566 | && (b->condition_not_parsed |
13567 | || (b->loc != NULL | |
13568 | && search_pspace != NULL | |
13569 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13570 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13571 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13572 | || b->enable_state == bp_disabled)) |
13573 | not_found_and_ok = 1; | |
13574 | ||
13575 | if (!not_found_and_ok) | |
13576 | { | |
13577 | /* We surely don't want to warn about the same breakpoint | |
13578 | 10 times. One solution, implemented here, is disable | |
13579 | the breakpoint on error. Another solution would be to | |
13580 | have separate 'warning emitted' flag. Since this | |
13581 | happens only when a binary has changed, I don't know | |
13582 | which approach is better. */ | |
13583 | b->enable_state = bp_disabled; | |
eedc3f4f | 13584 | throw; |
ef23e705 | 13585 | } |
94aeb44b TT |
13586 | |
13587 | exception = std::move (e); | |
ef23e705 TJB |
13588 | } |
13589 | ||
492d29ea | 13590 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13591 | { |
6c5b2ebe PA |
13592 | for (auto &sal : sals) |
13593 | resolve_sal_pc (&sal); | |
f00aae0f | 13594 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13595 | { |
ed1d1739 KS |
13596 | char *cond_string, *extra_string; |
13597 | int thread, task; | |
ef23e705 | 13598 | |
6c5b2ebe | 13599 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13600 | &cond_string, &thread, &task, |
13601 | &extra_string); | |
f00aae0f | 13602 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13603 | if (cond_string) |
13604 | b->cond_string = cond_string; | |
13605 | b->thread = thread; | |
13606 | b->task = task; | |
e7e0cddf | 13607 | if (extra_string) |
f00aae0f KS |
13608 | { |
13609 | xfree (b->extra_string); | |
13610 | b->extra_string = extra_string; | |
13611 | } | |
ef23e705 TJB |
13612 | b->condition_not_parsed = 0; |
13613 | } | |
13614 | ||
983af33b | 13615 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13616 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13617 | |
58438ac1 TT |
13618 | *found = 1; |
13619 | } | |
13620 | else | |
13621 | *found = 0; | |
ef23e705 TJB |
13622 | |
13623 | return sals; | |
13624 | } | |
13625 | ||
348d480f PA |
13626 | /* The default re_set method, for typical hardware or software |
13627 | breakpoints. Reevaluate the breakpoint and recreate its | |
13628 | locations. */ | |
13629 | ||
13630 | static void | |
28010a5d | 13631 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13632 | { |
c2f4122d | 13633 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13634 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13635 | |
6c5b2ebe PA |
13636 | int found; |
13637 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13638 | filter_pspace, &found); | |
ef23e705 | 13639 | if (found) |
6c5b2ebe | 13640 | expanded = std::move (sals); |
ef23e705 | 13641 | |
f00aae0f | 13642 | if (b->location_range_end != NULL) |
f1310107 | 13643 | { |
6c5b2ebe PA |
13644 | std::vector<symtab_and_line> sals_end |
13645 | = location_to_sals (b, b->location_range_end.get (), | |
13646 | filter_pspace, &found); | |
f1310107 | 13647 | if (found) |
6c5b2ebe | 13648 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13649 | } |
13650 | ||
c2f4122d | 13651 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13652 | } |
13653 | ||
983af33b SDJ |
13654 | /* Default method for creating SALs from an address string. It basically |
13655 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13656 | ||
13657 | static void | |
f00aae0f KS |
13658 | create_sals_from_location_default (const struct event_location *location, |
13659 | struct linespec_result *canonical, | |
13660 | enum bptype type_wanted) | |
983af33b | 13661 | { |
f00aae0f | 13662 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13663 | } |
13664 | ||
13665 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13666 | function for the `create_breakpoints_sal' method of | |
13667 | breakpoint_ops. */ | |
13668 | ||
13669 | static void | |
13670 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13671 | struct linespec_result *canonical, | |
e1e01040 PA |
13672 | gdb::unique_xmalloc_ptr<char> cond_string, |
13673 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13674 | enum bptype type_wanted, |
13675 | enum bpdisp disposition, | |
13676 | int thread, | |
13677 | int task, int ignore_count, | |
13678 | const struct breakpoint_ops *ops, | |
13679 | int from_tty, int enabled, | |
44f238bb | 13680 | int internal, unsigned flags) |
983af33b | 13681 | { |
e1e01040 PA |
13682 | create_breakpoints_sal (gdbarch, canonical, |
13683 | std::move (cond_string), | |
13684 | std::move (extra_string), | |
983af33b SDJ |
13685 | type_wanted, disposition, |
13686 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13687 | enabled, internal, flags); |
983af33b SDJ |
13688 | } |
13689 | ||
13690 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13691 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13692 | |
6c5b2ebe | 13693 | static std::vector<symtab_and_line> |
f00aae0f KS |
13694 | decode_location_default (struct breakpoint *b, |
13695 | const struct event_location *location, | |
6c5b2ebe | 13696 | struct program_space *search_pspace) |
983af33b SDJ |
13697 | { |
13698 | struct linespec_result canonical; | |
13699 | ||
c2f4122d | 13700 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13701 | NULL, 0, &canonical, multiple_symbols_all, |
983af33b SDJ |
13702 | b->filter); |
13703 | ||
13704 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13705 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13706 | |
6c5b2ebe | 13707 | if (!canonical.lsals.empty ()) |
983af33b | 13708 | { |
6c5b2ebe PA |
13709 | const linespec_sals &lsal = canonical.lsals[0]; |
13710 | return std::move (lsal.sals); | |
983af33b | 13711 | } |
6c5b2ebe | 13712 | return {}; |
983af33b SDJ |
13713 | } |
13714 | ||
bf469271 | 13715 | /* Reset a breakpoint. */ |
c906108c | 13716 | |
bf469271 PA |
13717 | static void |
13718 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13719 | { |
fdf44873 TT |
13720 | input_radix = b->input_radix; |
13721 | set_language (b->language); | |
c906108c | 13722 | |
348d480f | 13723 | b->ops->re_set (b); |
c906108c SS |
13724 | } |
13725 | ||
c2f4122d PA |
13726 | /* Re-set breakpoint locations for the current program space. |
13727 | Locations bound to other program spaces are left untouched. */ | |
13728 | ||
c906108c | 13729 | void |
69de3c6a | 13730 | breakpoint_re_set (void) |
c906108c | 13731 | { |
35df4500 | 13732 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13733 | |
c5aa993b | 13734 | { |
fdf44873 TT |
13735 | scoped_restore_current_language save_language; |
13736 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13737 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13738 | |
8e817061 JB |
13739 | /* breakpoint_re_set_one sets the current_language to the language |
13740 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13741 | before re-evaluating the breakpoint's location. This change can | |
13742 | unfortunately get undone by accident if the language_mode is set | |
13743 | to auto, and we either switch frames, or more likely in this context, | |
13744 | we select the current frame. | |
13745 | ||
13746 | We prevent this by temporarily turning the language_mode to | |
13747 | language_mode_manual. We restore it once all breakpoints | |
13748 | have been reset. */ | |
13749 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13750 | language_mode = language_mode_manual; | |
13751 | ||
5ed8105e PA |
13752 | /* Note: we must not try to insert locations until after all |
13753 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13754 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13755 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13756 | |
5ed8105e PA |
13757 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13758 | { | |
a70b8144 | 13759 | try |
bf469271 PA |
13760 | { |
13761 | breakpoint_re_set_one (b); | |
13762 | } | |
230d2906 | 13763 | catch (const gdb_exception &ex) |
bf469271 PA |
13764 | { |
13765 | exception_fprintf (gdb_stderr, ex, | |
13766 | "Error in re-setting breakpoint %d: ", | |
13767 | b->number); | |
13768 | } | |
5ed8105e | 13769 | } |
5ed8105e PA |
13770 | |
13771 | jit_breakpoint_re_set (); | |
13772 | } | |
6c95b8df | 13773 | |
af02033e PP |
13774 | create_overlay_event_breakpoint (); |
13775 | create_longjmp_master_breakpoint (); | |
13776 | create_std_terminate_master_breakpoint (); | |
186c406b | 13777 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13778 | |
13779 | /* Now we can insert. */ | |
13780 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13781 | } |
13782 | \f | |
c906108c SS |
13783 | /* Reset the thread number of this breakpoint: |
13784 | ||
13785 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13786 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13787 | void |
fba45db2 | 13788 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13789 | { |
13790 | if (b->thread != -1) | |
13791 | { | |
00431a78 | 13792 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13793 | |
13794 | /* We're being called after following a fork. The new fork is | |
13795 | selected as current, and unless this was a vfork will have a | |
13796 | different program space from the original thread. Reset that | |
13797 | as well. */ | |
13798 | b->loc->pspace = current_program_space; | |
c906108c SS |
13799 | } |
13800 | } | |
13801 | ||
03ac34d5 MS |
13802 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13803 | If from_tty is nonzero, it prints a message to that effect, | |
13804 | which ends with a period (no newline). */ | |
13805 | ||
c906108c | 13806 | void |
fba45db2 | 13807 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13808 | { |
52f0bd74 | 13809 | struct breakpoint *b; |
c906108c SS |
13810 | |
13811 | if (count < 0) | |
13812 | count = 0; | |
13813 | ||
13814 | ALL_BREAKPOINTS (b) | |
13815 | if (b->number == bptnum) | |
c5aa993b | 13816 | { |
d77f58be SS |
13817 | if (is_tracepoint (b)) |
13818 | { | |
13819 | if (from_tty && count != 0) | |
13820 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13821 | bptnum); | |
13822 | return; | |
13823 | } | |
13824 | ||
c5aa993b | 13825 | b->ignore_count = count; |
221ea385 KS |
13826 | if (from_tty) |
13827 | { | |
13828 | if (count == 0) | |
3e43a32a MS |
13829 | printf_filtered (_("Will stop next time " |
13830 | "breakpoint %d is reached."), | |
221ea385 KS |
13831 | bptnum); |
13832 | else if (count == 1) | |
a3f17187 | 13833 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13834 | bptnum); |
13835 | else | |
3e43a32a MS |
13836 | printf_filtered (_("Will ignore next %d " |
13837 | "crossings of breakpoint %d."), | |
221ea385 KS |
13838 | count, bptnum); |
13839 | } | |
76727919 | 13840 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13841 | return; |
13842 | } | |
c906108c | 13843 | |
8a3fe4f8 | 13844 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13845 | } |
13846 | ||
c906108c SS |
13847 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13848 | ||
13849 | static void | |
0b39b52e | 13850 | ignore_command (const char *args, int from_tty) |
c906108c | 13851 | { |
0b39b52e | 13852 | const char *p = args; |
52f0bd74 | 13853 | int num; |
c906108c SS |
13854 | |
13855 | if (p == 0) | |
e2e0b3e5 | 13856 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13857 | |
c906108c | 13858 | num = get_number (&p); |
5c44784c | 13859 | if (num == 0) |
8a3fe4f8 | 13860 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13861 | if (*p == 0) |
8a3fe4f8 | 13862 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13863 | |
13864 | set_ignore_count (num, | |
13865 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13866 | from_tty); | |
221ea385 KS |
13867 | if (from_tty) |
13868 | printf_filtered ("\n"); | |
c906108c SS |
13869 | } |
13870 | \f | |
d0fe4701 XR |
13871 | |
13872 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13873 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13874 | |
13875 | static void | |
d0fe4701 XR |
13876 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13877 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13878 | { |
d0fe4701 XR |
13879 | if (bp_num_range.first == 0) |
13880 | { | |
13881 | warning (_("bad breakpoint number at or near '%d'"), | |
13882 | bp_num_range.first); | |
13883 | } | |
13884 | else | |
c906108c | 13885 | { |
d0fe4701 | 13886 | struct breakpoint *b, *tmp; |
197f0a60 | 13887 | |
d0fe4701 | 13888 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13889 | { |
d0fe4701 XR |
13890 | bool match = false; |
13891 | ||
5c44784c | 13892 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13893 | if (b->number == i) |
5c44784c | 13894 | { |
bfd28288 | 13895 | match = true; |
48649e1b | 13896 | function (b); |
11cf8741 | 13897 | break; |
5c44784c | 13898 | } |
bfd28288 | 13899 | if (!match) |
d0fe4701 | 13900 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13901 | } |
c906108c SS |
13902 | } |
13903 | } | |
13904 | ||
d0fe4701 XR |
13905 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13906 | ARGS. */ | |
13907 | ||
13908 | static void | |
13909 | map_breakpoint_numbers (const char *args, | |
13910 | gdb::function_view<void (breakpoint *)> function) | |
13911 | { | |
13912 | if (args == NULL || *args == '\0') | |
13913 | error_no_arg (_("one or more breakpoint numbers")); | |
13914 | ||
13915 | number_or_range_parser parser (args); | |
13916 | ||
13917 | while (!parser.finished ()) | |
13918 | { | |
13919 | int num = parser.get_number (); | |
13920 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13921 | } | |
13922 | } | |
13923 | ||
13924 | /* Return the breakpoint location structure corresponding to the | |
13925 | BP_NUM and LOC_NUM values. */ | |
13926 | ||
0d381245 | 13927 | static struct bp_location * |
d0fe4701 | 13928 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13929 | { |
0d381245 | 13930 | struct breakpoint *b; |
0d381245 VP |
13931 | |
13932 | ALL_BREAKPOINTS (b) | |
13933 | if (b->number == bp_num) | |
13934 | { | |
13935 | break; | |
13936 | } | |
13937 | ||
13938 | if (!b || b->number != bp_num) | |
d0fe4701 | 13939 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13940 | |
0d381245 | 13941 | if (loc_num == 0) |
d0fe4701 | 13942 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13943 | |
d0fe4701 XR |
13944 | int n = 0; |
13945 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
13946 | if (++n == loc_num) | |
13947 | return loc; | |
13948 | ||
13949 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13950 | } |
13951 | ||
95e95a6d PA |
13952 | /* Modes of operation for extract_bp_num. */ |
13953 | enum class extract_bp_kind | |
13954 | { | |
13955 | /* Extracting a breakpoint number. */ | |
13956 | bp, | |
13957 | ||
13958 | /* Extracting a location number. */ | |
13959 | loc, | |
13960 | }; | |
13961 | ||
13962 | /* Extract a breakpoint or location number (as determined by KIND) | |
13963 | from the string starting at START. TRAILER is a character which | |
13964 | can be found after the number. If you don't want a trailer, use | |
13965 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13966 | string. This always returns a positive integer. */ | |
13967 | ||
13968 | static int | |
13969 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13970 | int trailer, const char **end_out = NULL) | |
13971 | { | |
13972 | const char *end = start; | |
13973 | int num = get_number_trailer (&end, trailer); | |
13974 | if (num < 0) | |
13975 | error (kind == extract_bp_kind::bp | |
13976 | ? _("Negative breakpoint number '%.*s'") | |
13977 | : _("Negative breakpoint location number '%.*s'"), | |
13978 | int (end - start), start); | |
13979 | if (num == 0) | |
13980 | error (kind == extract_bp_kind::bp | |
13981 | ? _("Bad breakpoint number '%.*s'") | |
13982 | : _("Bad breakpoint location number '%.*s'"), | |
13983 | int (end - start), start); | |
13984 | ||
13985 | if (end_out != NULL) | |
13986 | *end_out = end; | |
13987 | return num; | |
13988 | } | |
13989 | ||
13990 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13991 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13992 | representing the (inclusive) range. The returned pair's elements | |
13993 | are always positive integers. */ | |
13994 | ||
13995 | static std::pair<int, int> | |
13996 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13997 | const std::string &arg, | |
13998 | std::string::size_type arg_offset) | |
13999 | { | |
14000 | std::pair<int, int> range; | |
14001 | const char *bp_loc = &arg[arg_offset]; | |
14002 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14003 | if (dash != std::string::npos) | |
14004 | { | |
14005 | /* bp_loc is a range (x-z). */ | |
14006 | if (arg.length () == dash + 1) | |
14007 | error (kind == extract_bp_kind::bp | |
14008 | ? _("Bad breakpoint number at or near: '%s'") | |
14009 | : _("Bad breakpoint location number at or near: '%s'"), | |
14010 | bp_loc); | |
14011 | ||
14012 | const char *end; | |
14013 | const char *start_first = bp_loc; | |
14014 | const char *start_second = &arg[dash + 1]; | |
14015 | range.first = extract_bp_num (kind, start_first, '-'); | |
14016 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14017 | ||
14018 | if (range.first > range.second) | |
14019 | error (kind == extract_bp_kind::bp | |
14020 | ? _("Inverted breakpoint range at '%.*s'") | |
14021 | : _("Inverted breakpoint location range at '%.*s'"), | |
14022 | int (end - start_first), start_first); | |
14023 | } | |
14024 | else | |
14025 | { | |
14026 | /* bp_loc is a single value. */ | |
14027 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14028 | range.second = range.first; | |
14029 | } | |
14030 | return range; | |
14031 | } | |
14032 | ||
d0fe4701 XR |
14033 | /* Extract the breakpoint/location range specified by ARG. Returns |
14034 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14035 | BP_LOC_RANGE. | |
14036 | ||
14037 | ARG may be in any of the following forms: | |
14038 | ||
14039 | x where 'x' is a breakpoint number. | |
14040 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14041 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14042 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14043 | location number range. | |
14044 | */ | |
14045 | ||
cc638e86 | 14046 | static void |
d0fe4701 XR |
14047 | extract_bp_number_and_location (const std::string &arg, |
14048 | std::pair<int, int> &bp_num_range, | |
14049 | std::pair<int, int> &bp_loc_range) | |
14050 | { | |
14051 | std::string::size_type dot = arg.find ('.'); | |
14052 | ||
14053 | if (dot != std::string::npos) | |
14054 | { | |
14055 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14056 | ||
14057 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14058 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14059 | |
95e95a6d PA |
14060 | bp_num_range.first |
14061 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14062 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14063 | |
95e95a6d PA |
14064 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14065 | arg, dot + 1); | |
d0fe4701 XR |
14066 | } |
14067 | else | |
14068 | { | |
14069 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14070 | |
95e95a6d | 14071 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14072 | bp_loc_range.first = 0; |
14073 | bp_loc_range.second = 0; | |
14074 | } | |
d0fe4701 XR |
14075 | } |
14076 | ||
14077 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14078 | specifies whether to enable or disable. */ | |
14079 | ||
14080 | static void | |
14081 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14082 | { | |
14083 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14084 | if (loc != NULL) | |
14085 | { | |
14086 | if (loc->enabled != enable) | |
14087 | { | |
14088 | loc->enabled = enable; | |
14089 | mark_breakpoint_location_modified (loc); | |
14090 | } | |
14091 | if (target_supports_enable_disable_tracepoint () | |
14092 | && current_trace_status ()->running && loc->owner | |
14093 | && is_tracepoint (loc->owner)) | |
14094 | target_disable_tracepoint (loc); | |
14095 | } | |
14096 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14097 | |
14098 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14099 | } |
14100 | ||
14101 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14102 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14103 | (inclusive) range of location numbers of that breakpoint to | |
14104 | enable/disable. ENABLE specifies whether to enable or disable the | |
14105 | location. */ | |
14106 | ||
14107 | static void | |
14108 | enable_disable_breakpoint_location_range (int bp_num, | |
14109 | std::pair<int, int> &bp_loc_range, | |
14110 | bool enable) | |
14111 | { | |
14112 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14113 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14114 | } | |
0d381245 | 14115 | |
1900040c MS |
14116 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14117 | If from_tty is nonzero, it prints a message to that effect, | |
14118 | which ends with a period (no newline). */ | |
14119 | ||
c906108c | 14120 | void |
fba45db2 | 14121 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14122 | { |
14123 | /* Never disable a watchpoint scope breakpoint; we want to | |
14124 | hit them when we leave scope so we can delete both the | |
14125 | watchpoint and its scope breakpoint at that time. */ | |
14126 | if (bpt->type == bp_watchpoint_scope) | |
14127 | return; | |
14128 | ||
b5de0fa7 | 14129 | bpt->enable_state = bp_disabled; |
c906108c | 14130 | |
b775012e LM |
14131 | /* Mark breakpoint locations modified. */ |
14132 | mark_breakpoint_modified (bpt); | |
14133 | ||
d248b706 KY |
14134 | if (target_supports_enable_disable_tracepoint () |
14135 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14136 | { | |
14137 | struct bp_location *location; | |
14138 | ||
14139 | for (location = bpt->loc; location; location = location->next) | |
14140 | target_disable_tracepoint (location); | |
14141 | } | |
14142 | ||
44702360 | 14143 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14144 | |
76727919 | 14145 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14146 | } |
14147 | ||
d0fe4701 XR |
14148 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14149 | specified in ARGS. ARGS may be in any of the formats handled by | |
14150 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14151 | or disable the breakpoints/locations. */ | |
14152 | ||
c906108c | 14153 | static void |
d0fe4701 | 14154 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14155 | { |
c906108c | 14156 | if (args == 0) |
46c6471b PA |
14157 | { |
14158 | struct breakpoint *bpt; | |
14159 | ||
14160 | ALL_BREAKPOINTS (bpt) | |
14161 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14162 | { |
14163 | if (enable) | |
14164 | enable_breakpoint (bpt); | |
14165 | else | |
14166 | disable_breakpoint (bpt); | |
14167 | } | |
46c6471b | 14168 | } |
9eaabc75 | 14169 | else |
0d381245 | 14170 | { |
cb791d59 | 14171 | std::string num = extract_arg (&args); |
9eaabc75 | 14172 | |
cb791d59 | 14173 | while (!num.empty ()) |
d248b706 | 14174 | { |
d0fe4701 | 14175 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14176 | |
cc638e86 PA |
14177 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14178 | ||
14179 | if (bp_loc_range.first == bp_loc_range.second | |
14180 | && bp_loc_range.first == 0) | |
d0fe4701 | 14181 | { |
cc638e86 PA |
14182 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14183 | map_breakpoint_number_range (bp_num_range, | |
14184 | enable | |
14185 | ? enable_breakpoint | |
14186 | : disable_breakpoint); | |
14187 | } | |
14188 | else | |
14189 | { | |
14190 | /* Handle breakpoint ids with formats 'x.y' or | |
14191 | 'x.y-z'. */ | |
14192 | enable_disable_breakpoint_location_range | |
14193 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14194 | } |
9eaabc75 | 14195 | num = extract_arg (&args); |
d248b706 | 14196 | } |
0d381245 | 14197 | } |
c906108c SS |
14198 | } |
14199 | ||
d0fe4701 XR |
14200 | /* The disable command disables the specified breakpoints/locations |
14201 | (or all defined breakpoints) so they're no longer effective in | |
14202 | stopping the inferior. ARGS may be in any of the forms defined in | |
14203 | extract_bp_number_and_location. */ | |
14204 | ||
14205 | static void | |
14206 | disable_command (const char *args, int from_tty) | |
14207 | { | |
14208 | enable_disable_command (args, from_tty, false); | |
14209 | } | |
14210 | ||
c906108c | 14211 | static void |
816338b5 SS |
14212 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14213 | int count) | |
c906108c | 14214 | { |
afe38095 | 14215 | int target_resources_ok; |
c906108c SS |
14216 | |
14217 | if (bpt->type == bp_hardware_breakpoint) | |
14218 | { | |
14219 | int i; | |
c5aa993b | 14220 | i = hw_breakpoint_used_count (); |
53a5351d | 14221 | target_resources_ok = |
d92524f1 | 14222 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14223 | i + 1, 0); |
c906108c | 14224 | if (target_resources_ok == 0) |
8a3fe4f8 | 14225 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14226 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14227 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14228 | } |
14229 | ||
cc60f2e3 | 14230 | if (is_watchpoint (bpt)) |
c906108c | 14231 | { |
d07205c2 | 14232 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14233 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14234 | |
a70b8144 | 14235 | try |
c906108c | 14236 | { |
3a5c3e22 PA |
14237 | struct watchpoint *w = (struct watchpoint *) bpt; |
14238 | ||
1e718ff1 TJB |
14239 | orig_enable_state = bpt->enable_state; |
14240 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14241 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14242 | } |
230d2906 | 14243 | catch (const gdb_exception &e) |
c5aa993b | 14244 | { |
1e718ff1 | 14245 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14246 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14247 | bpt->number); | |
14248 | return; | |
c5aa993b | 14249 | } |
c906108c | 14250 | } |
0101ce28 | 14251 | |
b775012e LM |
14252 | bpt->enable_state = bp_enabled; |
14253 | ||
14254 | /* Mark breakpoint locations modified. */ | |
14255 | mark_breakpoint_modified (bpt); | |
14256 | ||
d248b706 KY |
14257 | if (target_supports_enable_disable_tracepoint () |
14258 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14259 | { | |
14260 | struct bp_location *location; | |
14261 | ||
14262 | for (location = bpt->loc; location; location = location->next) | |
14263 | target_enable_tracepoint (location); | |
14264 | } | |
14265 | ||
b4c291bb | 14266 | bpt->disposition = disposition; |
816338b5 | 14267 | bpt->enable_count = count; |
44702360 | 14268 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14269 | |
76727919 | 14270 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14271 | } |
14272 | ||
fe3f5fa8 | 14273 | |
c906108c | 14274 | void |
fba45db2 | 14275 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14276 | { |
816338b5 | 14277 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14278 | } |
14279 | ||
d0fe4701 XR |
14280 | /* The enable command enables the specified breakpoints/locations (or |
14281 | all defined breakpoints) so they once again become (or continue to | |
14282 | be) effective in stopping the inferior. ARGS may be in any of the | |
14283 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14284 | |
c906108c | 14285 | static void |
981a3fb3 | 14286 | enable_command (const char *args, int from_tty) |
c906108c | 14287 | { |
d0fe4701 | 14288 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14289 | } |
14290 | ||
c906108c | 14291 | static void |
4495129a | 14292 | enable_once_command (const char *args, int from_tty) |
c906108c | 14293 | { |
48649e1b TT |
14294 | map_breakpoint_numbers |
14295 | (args, [&] (breakpoint *b) | |
14296 | { | |
14297 | iterate_over_related_breakpoints | |
14298 | (b, [&] (breakpoint *bpt) | |
14299 | { | |
14300 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14301 | }); | |
14302 | }); | |
816338b5 SS |
14303 | } |
14304 | ||
14305 | static void | |
4495129a | 14306 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14307 | { |
b9d61307 SM |
14308 | int count; |
14309 | ||
14310 | if (args == NULL) | |
14311 | error_no_arg (_("hit count")); | |
14312 | ||
14313 | count = get_number (&args); | |
816338b5 | 14314 | |
48649e1b TT |
14315 | map_breakpoint_numbers |
14316 | (args, [&] (breakpoint *b) | |
14317 | { | |
14318 | iterate_over_related_breakpoints | |
14319 | (b, [&] (breakpoint *bpt) | |
14320 | { | |
14321 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14322 | }); | |
14323 | }); | |
c906108c SS |
14324 | } |
14325 | ||
c906108c | 14326 | static void |
4495129a | 14327 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14328 | { |
48649e1b TT |
14329 | map_breakpoint_numbers |
14330 | (args, [&] (breakpoint *b) | |
14331 | { | |
14332 | iterate_over_related_breakpoints | |
14333 | (b, [&] (breakpoint *bpt) | |
14334 | { | |
14335 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14336 | }); | |
14337 | }); | |
c906108c SS |
14338 | } |
14339 | \f | |
fa8d40ab | 14340 | static void |
981a3fb3 | 14341 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14342 | { |
14343 | } | |
14344 | ||
14345 | static void | |
981a3fb3 | 14346 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14347 | { |
14348 | } | |
14349 | ||
1f3b5d1b PP |
14350 | /* Invalidate last known value of any hardware watchpoint if |
14351 | the memory which that value represents has been written to by | |
14352 | GDB itself. */ | |
14353 | ||
14354 | static void | |
8de0566d YQ |
14355 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14356 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14357 | const bfd_byte *data) |
14358 | { | |
14359 | struct breakpoint *bp; | |
14360 | ||
14361 | ALL_BREAKPOINTS (bp) | |
14362 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14363 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14364 | { |
3a5c3e22 | 14365 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14366 | |
850645cf | 14367 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14368 | { |
14369 | struct bp_location *loc; | |
14370 | ||
14371 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14372 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14373 | && loc->address + loc->length > addr | |
14374 | && addr + len > loc->address) | |
14375 | { | |
3a5c3e22 PA |
14376 | wp->val = NULL; |
14377 | wp->val_valid = 0; | |
14378 | } | |
14379 | } | |
1f3b5d1b PP |
14380 | } |
14381 | } | |
14382 | ||
8181d85f DJ |
14383 | /* Create and insert a breakpoint for software single step. */ |
14384 | ||
14385 | void | |
6c95b8df | 14386 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14387 | const address_space *aspace, |
4a64f543 | 14388 | CORE_ADDR next_pc) |
8181d85f | 14389 | { |
7c16b83e PA |
14390 | struct thread_info *tp = inferior_thread (); |
14391 | struct symtab_and_line sal; | |
14392 | CORE_ADDR pc = next_pc; | |
8181d85f | 14393 | |
34b7e8a6 PA |
14394 | if (tp->control.single_step_breakpoints == NULL) |
14395 | { | |
14396 | tp->control.single_step_breakpoints | |
5d5658a1 | 14397 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14398 | } |
8181d85f | 14399 | |
7c16b83e PA |
14400 | sal = find_pc_line (pc, 0); |
14401 | sal.pc = pc; | |
14402 | sal.section = find_pc_overlay (pc); | |
14403 | sal.explicit_pc = 1; | |
34b7e8a6 | 14404 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14405 | |
7c16b83e | 14406 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14407 | } |
14408 | ||
93f9a11f YQ |
14409 | /* Insert single step breakpoints according to the current state. */ |
14410 | ||
14411 | int | |
14412 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14413 | { | |
f5ea389a | 14414 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14415 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14416 | |
f5ea389a | 14417 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14418 | |
a0ff9e1a | 14419 | if (!next_pcs.empty ()) |
93f9a11f | 14420 | { |
f5ea389a | 14421 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14422 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14423 | |
a0ff9e1a | 14424 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14425 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14426 | ||
93f9a11f YQ |
14427 | return 1; |
14428 | } | |
14429 | else | |
14430 | return 0; | |
14431 | } | |
14432 | ||
34b7e8a6 | 14433 | /* See breakpoint.h. */ |
f02253f1 HZ |
14434 | |
14435 | int | |
7c16b83e | 14436 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14437 | const address_space *aspace, |
7c16b83e | 14438 | CORE_ADDR pc) |
1aafd4da | 14439 | { |
7c16b83e | 14440 | struct bp_location *loc; |
1aafd4da | 14441 | |
7c16b83e PA |
14442 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14443 | if (loc->inserted | |
14444 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14445 | return 1; | |
1aafd4da | 14446 | |
7c16b83e | 14447 | return 0; |
ef370185 JB |
14448 | } |
14449 | ||
14450 | /* Check whether a software single-step breakpoint is inserted at | |
14451 | PC. */ | |
14452 | ||
14453 | int | |
accd0bcd | 14454 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14455 | CORE_ADDR pc) |
14456 | { | |
34b7e8a6 PA |
14457 | struct breakpoint *bpt; |
14458 | ||
14459 | ALL_BREAKPOINTS (bpt) | |
14460 | { | |
14461 | if (bpt->type == bp_single_step | |
14462 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14463 | return 1; | |
14464 | } | |
14465 | return 0; | |
1aafd4da UW |
14466 | } |
14467 | ||
1042e4c0 SS |
14468 | /* Tracepoint-specific operations. */ |
14469 | ||
14470 | /* Set tracepoint count to NUM. */ | |
14471 | static void | |
14472 | set_tracepoint_count (int num) | |
14473 | { | |
14474 | tracepoint_count = num; | |
4fa62494 | 14475 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14476 | } |
14477 | ||
70221824 | 14478 | static void |
0b39b52e | 14479 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14480 | { |
55aa24fb | 14481 | struct breakpoint_ops *ops; |
55aa24fb | 14482 | |
ffc2605c TT |
14483 | event_location_up location = string_to_event_location (&arg, |
14484 | current_language); | |
5b56227b | 14485 | if (location != NULL |
ffc2605c | 14486 | && event_location_type (location.get ()) == PROBE_LOCATION) |
55aa24fb SDJ |
14487 | ops = &tracepoint_probe_breakpoint_ops; |
14488 | else | |
14489 | ops = &tracepoint_breakpoint_ops; | |
14490 | ||
558a9d82 | 14491 | create_breakpoint (get_current_arch (), |
ffc2605c | 14492 | location.get (), |
f00aae0f | 14493 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14494 | 0 /* tempflag */, |
14495 | bp_tracepoint /* type_wanted */, | |
14496 | 0 /* Ignore count */, | |
14497 | pending_break_support, | |
14498 | ops, | |
14499 | from_tty, | |
14500 | 1 /* enabled */, | |
14501 | 0 /* internal */, 0); | |
1042e4c0 SS |
14502 | } |
14503 | ||
70221824 | 14504 | static void |
0b39b52e | 14505 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14506 | { |
ffc2605c TT |
14507 | event_location_up location = string_to_event_location (&arg, |
14508 | current_language); | |
558a9d82 | 14509 | create_breakpoint (get_current_arch (), |
ffc2605c | 14510 | location.get (), |
f00aae0f | 14511 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14512 | 0 /* tempflag */, |
14513 | bp_fast_tracepoint /* type_wanted */, | |
14514 | 0 /* Ignore count */, | |
14515 | pending_break_support, | |
14516 | &tracepoint_breakpoint_ops, | |
14517 | from_tty, | |
14518 | 1 /* enabled */, | |
14519 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14520 | } |
14521 | ||
14522 | /* strace command implementation. Creates a static tracepoint. */ | |
14523 | ||
70221824 | 14524 | static void |
0b39b52e | 14525 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14526 | { |
983af33b | 14527 | struct breakpoint_ops *ops; |
ffc2605c | 14528 | event_location_up location; |
983af33b SDJ |
14529 | |
14530 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14531 | or with a normal static tracepoint. */ | |
61012eef | 14532 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14533 | { |
14534 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14535 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14536 | } |
983af33b | 14537 | else |
f00aae0f KS |
14538 | { |
14539 | ops = &tracepoint_breakpoint_ops; | |
14540 | location = string_to_event_location (&arg, current_language); | |
14541 | } | |
983af33b | 14542 | |
558a9d82 | 14543 | create_breakpoint (get_current_arch (), |
ffc2605c | 14544 | location.get (), |
f00aae0f | 14545 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14546 | 0 /* tempflag */, |
14547 | bp_static_tracepoint /* type_wanted */, | |
14548 | 0 /* Ignore count */, | |
14549 | pending_break_support, | |
14550 | ops, | |
14551 | from_tty, | |
14552 | 1 /* enabled */, | |
14553 | 0 /* internal */, 0); | |
7a697b8d SS |
14554 | } |
14555 | ||
409873ef SS |
14556 | /* Set up a fake reader function that gets command lines from a linked |
14557 | list that was acquired during tracepoint uploading. */ | |
14558 | ||
14559 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14560 | static int next_cmd; |
409873ef SS |
14561 | |
14562 | static char * | |
14563 | read_uploaded_action (void) | |
14564 | { | |
a18ba4e4 | 14565 | char *rslt = nullptr; |
409873ef | 14566 | |
a18ba4e4 SM |
14567 | if (next_cmd < this_utp->cmd_strings.size ()) |
14568 | { | |
67aa1f3c | 14569 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14570 | next_cmd++; |
14571 | } | |
409873ef SS |
14572 | |
14573 | return rslt; | |
14574 | } | |
14575 | ||
00bf0b85 SS |
14576 | /* Given information about a tracepoint as recorded on a target (which |
14577 | can be either a live system or a trace file), attempt to create an | |
14578 | equivalent GDB tracepoint. This is not a reliable process, since | |
14579 | the target does not necessarily have all the information used when | |
14580 | the tracepoint was originally defined. */ | |
14581 | ||
d9b3f62e | 14582 | struct tracepoint * |
00bf0b85 | 14583 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14584 | { |
f2fc3015 TT |
14585 | const char *addr_str; |
14586 | char small_buf[100]; | |
d9b3f62e | 14587 | struct tracepoint *tp; |
fd9b8c24 | 14588 | |
409873ef | 14589 | if (utp->at_string) |
67aa1f3c | 14590 | addr_str = utp->at_string.get (); |
409873ef SS |
14591 | else |
14592 | { | |
14593 | /* In the absence of a source location, fall back to raw | |
14594 | address. Since there is no way to confirm that the address | |
14595 | means the same thing as when the trace was started, warn the | |
14596 | user. */ | |
3e43a32a MS |
14597 | warning (_("Uploaded tracepoint %d has no " |
14598 | "source location, using raw address"), | |
409873ef | 14599 | utp->number); |
8c042590 | 14600 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14601 | addr_str = small_buf; |
14602 | } | |
14603 | ||
14604 | /* There's not much we can do with a sequence of bytecodes. */ | |
14605 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14606 | warning (_("Uploaded tracepoint %d condition " |
14607 | "has no source form, ignoring it"), | |
409873ef | 14608 | utp->number); |
d5551862 | 14609 | |
ffc2605c TT |
14610 | event_location_up location = string_to_event_location (&addr_str, |
14611 | current_language); | |
8cdf0e15 | 14612 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14613 | location.get (), |
67aa1f3c | 14614 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14615 | 0 /* parse cond/thread */, |
8cdf0e15 | 14616 | 0 /* tempflag */, |
0fb4aa4b | 14617 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14618 | 0 /* Ignore count */, |
14619 | pending_break_support, | |
348d480f | 14620 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14621 | 0 /* from_tty */, |
84f4c1fe | 14622 | utp->enabled /* enabled */, |
44f238bb PA |
14623 | 0 /* internal */, |
14624 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14625 | return NULL; |
fd9b8c24 | 14626 | |
409873ef | 14627 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14628 | tp = get_tracepoint (tracepoint_count); |
14629 | gdb_assert (tp != NULL); | |
d5551862 | 14630 | |
00bf0b85 SS |
14631 | if (utp->pass > 0) |
14632 | { | |
8c042590 | 14633 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14634 | tp->number); |
00bf0b85 | 14635 | |
409873ef | 14636 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14637 | } |
14638 | ||
409873ef SS |
14639 | /* If we have uploaded versions of the original commands, set up a |
14640 | special-purpose "reader" function and call the usual command line | |
14641 | reader, then pass the result to the breakpoint command-setting | |
14642 | function. */ | |
a18ba4e4 | 14643 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14644 | { |
12973681 | 14645 | counted_command_line cmd_list; |
00bf0b85 | 14646 | |
409873ef | 14647 | this_utp = utp; |
3149d8c1 | 14648 | next_cmd = 0; |
d5551862 | 14649 | |
60b3cef2 | 14650 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14651 | |
c1fc2657 | 14652 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14653 | } |
a18ba4e4 SM |
14654 | else if (!utp->actions.empty () |
14655 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14656 | warning (_("Uploaded tracepoint %d actions " |
14657 | "have no source form, ignoring them"), | |
409873ef | 14658 | utp->number); |
00bf0b85 | 14659 | |
f196051f | 14660 | /* Copy any status information that might be available. */ |
c1fc2657 | 14661 | tp->hit_count = utp->hit_count; |
f196051f SS |
14662 | tp->traceframe_usage = utp->traceframe_usage; |
14663 | ||
00bf0b85 | 14664 | return tp; |
d9b3f62e | 14665 | } |
00bf0b85 | 14666 | |
1042e4c0 SS |
14667 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14668 | omitted. */ | |
14669 | ||
14670 | static void | |
1d12d88f | 14671 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14672 | { |
79a45e25 | 14673 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14674 | int num_printed; |
1042e4c0 | 14675 | |
e5a67952 | 14676 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14677 | |
14678 | if (num_printed == 0) | |
1042e4c0 | 14679 | { |
e5a67952 | 14680 | if (args == NULL || *args == '\0') |
112e8700 | 14681 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14682 | else |
112e8700 | 14683 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14684 | } |
ad443146 SS |
14685 | |
14686 | default_collect_info (); | |
1042e4c0 SS |
14687 | } |
14688 | ||
4a64f543 | 14689 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14690 | Not supported by all targets. */ |
14691 | static void | |
5fed81ff | 14692 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14693 | { |
14694 | enable_command (args, from_tty); | |
14695 | } | |
14696 | ||
4a64f543 | 14697 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14698 | Not supported by all targets. */ |
14699 | static void | |
5fed81ff | 14700 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14701 | { |
14702 | disable_command (args, from_tty); | |
14703 | } | |
14704 | ||
4a64f543 | 14705 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14706 | static void |
4495129a | 14707 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14708 | { |
35df4500 | 14709 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14710 | |
14711 | dont_repeat (); | |
14712 | ||
14713 | if (arg == 0) | |
14714 | { | |
14715 | int breaks_to_delete = 0; | |
14716 | ||
14717 | /* Delete all breakpoints if no argument. | |
14718 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14719 | have to be deleted with an explicit breakpoint number |
14720 | argument. */ | |
1042e4c0 | 14721 | ALL_TRACEPOINTS (b) |
46c6471b | 14722 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14723 | { |
14724 | breaks_to_delete = 1; | |
14725 | break; | |
14726 | } | |
1042e4c0 SS |
14727 | |
14728 | /* Ask user only if there are some breakpoints to delete. */ | |
14729 | if (!from_tty | |
14730 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14731 | { | |
35df4500 | 14732 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14733 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14734 | delete_breakpoint (b); |
1042e4c0 SS |
14735 | } |
14736 | } | |
14737 | else | |
48649e1b | 14738 | map_breakpoint_numbers |
b926417a | 14739 | (arg, [&] (breakpoint *br) |
48649e1b | 14740 | { |
b926417a | 14741 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14742 | }); |
1042e4c0 SS |
14743 | } |
14744 | ||
197f0a60 TT |
14745 | /* Helper function for trace_pass_command. */ |
14746 | ||
14747 | static void | |
d9b3f62e | 14748 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14749 | { |
d9b3f62e | 14750 | tp->pass_count = count; |
76727919 | 14751 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14752 | if (from_tty) |
14753 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14754 | tp->number, count); |
197f0a60 TT |
14755 | } |
14756 | ||
1042e4c0 SS |
14757 | /* Set passcount for tracepoint. |
14758 | ||
14759 | First command argument is passcount, second is tracepoint number. | |
14760 | If tracepoint number omitted, apply to most recently defined. | |
14761 | Also accepts special argument "all". */ | |
14762 | ||
14763 | static void | |
0b39b52e | 14764 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14765 | { |
d9b3f62e | 14766 | struct tracepoint *t1; |
0b39b52e | 14767 | ULONGEST count; |
1042e4c0 SS |
14768 | |
14769 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14770 | error (_("passcount command requires an " |
14771 | "argument (count + optional TP num)")); | |
1042e4c0 | 14772 | |
0b39b52e | 14773 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14774 | |
529480d0 | 14775 | args = skip_spaces (args); |
1042e4c0 SS |
14776 | if (*args && strncasecmp (args, "all", 3) == 0) |
14777 | { | |
d9b3f62e PA |
14778 | struct breakpoint *b; |
14779 | ||
1042e4c0 | 14780 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14781 | if (*args) |
14782 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14783 | |
d9b3f62e | 14784 | ALL_TRACEPOINTS (b) |
197f0a60 | 14785 | { |
d9b3f62e | 14786 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14787 | trace_pass_set_count (t1, count, from_tty); |
14788 | } | |
14789 | } | |
14790 | else if (*args == '\0') | |
1042e4c0 | 14791 | { |
5fa1d40e | 14792 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14793 | if (t1) |
197f0a60 TT |
14794 | trace_pass_set_count (t1, count, from_tty); |
14795 | } | |
14796 | else | |
14797 | { | |
bfd28288 PA |
14798 | number_or_range_parser parser (args); |
14799 | while (!parser.finished ()) | |
1042e4c0 | 14800 | { |
bfd28288 | 14801 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14802 | if (t1) |
14803 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14804 | } |
14805 | } | |
1042e4c0 SS |
14806 | } |
14807 | ||
d9b3f62e | 14808 | struct tracepoint * |
1042e4c0 SS |
14809 | get_tracepoint (int num) |
14810 | { | |
14811 | struct breakpoint *t; | |
14812 | ||
14813 | ALL_TRACEPOINTS (t) | |
14814 | if (t->number == num) | |
d9b3f62e | 14815 | return (struct tracepoint *) t; |
1042e4c0 SS |
14816 | |
14817 | return NULL; | |
14818 | } | |
14819 | ||
d5551862 SS |
14820 | /* Find the tracepoint with the given target-side number (which may be |
14821 | different from the tracepoint number after disconnecting and | |
14822 | reconnecting). */ | |
14823 | ||
d9b3f62e | 14824 | struct tracepoint * |
d5551862 SS |
14825 | get_tracepoint_by_number_on_target (int num) |
14826 | { | |
d9b3f62e | 14827 | struct breakpoint *b; |
d5551862 | 14828 | |
d9b3f62e PA |
14829 | ALL_TRACEPOINTS (b) |
14830 | { | |
14831 | struct tracepoint *t = (struct tracepoint *) b; | |
14832 | ||
14833 | if (t->number_on_target == num) | |
14834 | return t; | |
14835 | } | |
d5551862 SS |
14836 | |
14837 | return NULL; | |
14838 | } | |
14839 | ||
1042e4c0 | 14840 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14841 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14842 | If the argument is missing, the most recent tracepoint |
14843 | (tracepoint_count) is returned. */ | |
14844 | ||
d9b3f62e | 14845 | struct tracepoint * |
0b39b52e | 14846 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14847 | number_or_range_parser *parser) |
1042e4c0 | 14848 | { |
1042e4c0 SS |
14849 | struct breakpoint *t; |
14850 | int tpnum; | |
0b39b52e | 14851 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14852 | |
bfd28288 | 14853 | if (parser != NULL) |
197f0a60 | 14854 | { |
bfd28288 PA |
14855 | gdb_assert (!parser->finished ()); |
14856 | tpnum = parser->get_number (); | |
197f0a60 TT |
14857 | } |
14858 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14859 | tpnum = tracepoint_count; |
1042e4c0 | 14860 | else |
197f0a60 | 14861 | tpnum = get_number (arg); |
1042e4c0 SS |
14862 | |
14863 | if (tpnum <= 0) | |
14864 | { | |
14865 | if (instring && *instring) | |
14866 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14867 | instring); | |
14868 | else | |
5fa1d40e | 14869 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14870 | return NULL; |
14871 | } | |
14872 | ||
14873 | ALL_TRACEPOINTS (t) | |
14874 | if (t->number == tpnum) | |
14875 | { | |
d9b3f62e | 14876 | return (struct tracepoint *) t; |
1042e4c0 SS |
14877 | } |
14878 | ||
1042e4c0 SS |
14879 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14880 | return NULL; | |
14881 | } | |
14882 | ||
d9b3f62e PA |
14883 | void |
14884 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14885 | { | |
14886 | if (b->thread != -1) | |
14887 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14888 | ||
14889 | if (b->task != 0) | |
14890 | fprintf_unfiltered (fp, " task %d", b->task); | |
14891 | ||
14892 | fprintf_unfiltered (fp, "\n"); | |
14893 | } | |
14894 | ||
6149aea9 PA |
14895 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14896 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14897 | on each breakpoint and only include the ones for which it returns | |
14898 | non-zero. */ | |
14899 | ||
1042e4c0 | 14900 | static void |
4495129a | 14901 | save_breakpoints (const char *filename, int from_tty, |
6149aea9 | 14902 | int (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14903 | { |
14904 | struct breakpoint *tp; | |
6149aea9 | 14905 | int any = 0; |
6149aea9 | 14906 | int extra_trace_bits = 0; |
1042e4c0 | 14907 | |
6149aea9 PA |
14908 | if (filename == 0 || *filename == 0) |
14909 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14910 | |
14911 | /* See if we have anything to save. */ | |
6149aea9 | 14912 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14913 | { |
6149aea9 | 14914 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14915 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14916 | continue; |
14917 | ||
14918 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14919 | if (filter && !filter (tp)) | |
14920 | continue; | |
14921 | ||
14922 | any = 1; | |
14923 | ||
14924 | if (is_tracepoint (tp)) | |
14925 | { | |
14926 | extra_trace_bits = 1; | |
14927 | ||
14928 | /* We can stop searching. */ | |
14929 | break; | |
14930 | } | |
1042e4c0 | 14931 | } |
6149aea9 PA |
14932 | |
14933 | if (!any) | |
1042e4c0 | 14934 | { |
6149aea9 | 14935 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14936 | return; |
14937 | } | |
14938 | ||
ee0c3293 | 14939 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14940 | |
14941 | stdio_file fp; | |
14942 | ||
ee0c3293 | 14943 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14944 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14945 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14946 | |
6149aea9 | 14947 | if (extra_trace_bits) |
d7e74731 | 14948 | save_trace_state_variables (&fp); |
8bf6485c | 14949 | |
6149aea9 | 14950 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14951 | { |
6149aea9 | 14952 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14953 | if (!user_breakpoint_p (tp)) |
6149aea9 | 14954 | continue; |
8bf6485c | 14955 | |
6149aea9 PA |
14956 | /* If we have a filter, only save the breakpoints it accepts. */ |
14957 | if (filter && !filter (tp)) | |
14958 | continue; | |
14959 | ||
d7e74731 | 14960 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 14961 | |
6149aea9 PA |
14962 | /* Note, we can't rely on tp->number for anything, as we can't |
14963 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14964 | instead. */ | |
14965 | ||
14966 | if (tp->cond_string) | |
d7e74731 | 14967 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
14968 | |
14969 | if (tp->ignore_count) | |
d7e74731 | 14970 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 14971 | |
2d9442cc | 14972 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 14973 | { |
d7e74731 | 14974 | fp.puts (" commands\n"); |
a7bdde9e | 14975 | |
d7e74731 | 14976 | current_uiout->redirect (&fp); |
a70b8144 | 14977 | try |
1042e4c0 | 14978 | { |
d1b0a7bf | 14979 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 14980 | } |
230d2906 | 14981 | catch (const gdb_exception &ex) |
492d29ea | 14982 | { |
112e8700 | 14983 | current_uiout->redirect (NULL); |
eedc3f4f | 14984 | throw; |
492d29ea | 14985 | } |
1042e4c0 | 14986 | |
112e8700 | 14987 | current_uiout->redirect (NULL); |
d7e74731 | 14988 | fp.puts (" end\n"); |
1042e4c0 | 14989 | } |
6149aea9 PA |
14990 | |
14991 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 14992 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
14993 | |
14994 | /* If this is a multi-location breakpoint, check if the locations | |
14995 | should be individually disabled. Watchpoint locations are | |
14996 | special, and not user visible. */ | |
14997 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
14998 | { | |
14999 | struct bp_location *loc; | |
15000 | int n = 1; | |
15001 | ||
15002 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15003 | if (!loc->enabled) | |
d7e74731 | 15004 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15005 | } |
1042e4c0 | 15006 | } |
8bf6485c | 15007 | |
6149aea9 | 15008 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15009 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15010 | |
1042e4c0 | 15011 | if (from_tty) |
ee0c3293 | 15012 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15013 | } |
15014 | ||
15015 | /* The `save breakpoints' command. */ | |
15016 | ||
15017 | static void | |
4495129a | 15018 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15019 | { |
15020 | save_breakpoints (args, from_tty, NULL); | |
15021 | } | |
15022 | ||
15023 | /* The `save tracepoints' command. */ | |
15024 | ||
15025 | static void | |
4495129a | 15026 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15027 | { |
15028 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15029 | } |
15030 | ||
15031 | /* Create a vector of all tracepoints. */ | |
15032 | ||
f51e0e20 | 15033 | std::vector<breakpoint *> |
eeae04df | 15034 | all_tracepoints (void) |
1042e4c0 | 15035 | { |
f51e0e20 | 15036 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15037 | struct breakpoint *tp; |
15038 | ||
15039 | ALL_TRACEPOINTS (tp) | |
15040 | { | |
f51e0e20 | 15041 | tp_vec.push_back (tp); |
1042e4c0 SS |
15042 | } |
15043 | ||
15044 | return tp_vec; | |
15045 | } | |
15046 | ||
c906108c | 15047 | \f |
629500fa KS |
15048 | /* This help string is used to consolidate all the help string for specifying |
15049 | locations used by several commands. */ | |
15050 | ||
15051 | #define LOCATION_HELP_STRING \ | |
15052 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15053 | source filename, function name, label name, and line number.\n\ | |
15054 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15055 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15056 | \"factorial.c:fact:the_top\".\n\ | |
15057 | \n\ | |
15058 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15059 | program. Example: To specify the fourth byte past the start function\n\ | |
15060 | \"main\", use \"*main + 4\".\n\ | |
15061 | \n\ | |
15062 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15063 | syntax to specify location parameters.\n\ | |
15064 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15065 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15066 | -function fact -label the_top\".\n\ |
15067 | \n\ | |
15068 | By default, a specified function is matched against the program's\n\ | |
15069 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15070 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15071 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15072 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15073 | specified name as a complete fully-qualified name instead." |
629500fa | 15074 | |
4a64f543 MS |
15075 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15076 | commands. It is defined as a macro to prevent duplication. | |
15077 | COMMAND should be a string constant containing the name of the | |
15078 | command. */ | |
629500fa | 15079 | |
31e2b00f | 15080 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15081 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15082 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15083 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15084 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15085 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15086 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15087 | below.\n\ | |
15088 | \n\ | |
dc10affe PA |
15089 | With no LOCATION, uses current execution address of the selected\n\ |
15090 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15091 | \n\ |
15092 | THREADNUM is the number from \"info threads\".\n\ | |
15093 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15094 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15095 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15096 | conditions are different.\n\ | |
31e2b00f AS |
15097 | \n\ |
15098 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15099 | ||
44feb3ce TT |
15100 | /* List of subcommands for "catch". */ |
15101 | static struct cmd_list_element *catch_cmdlist; | |
15102 | ||
15103 | /* List of subcommands for "tcatch". */ | |
15104 | static struct cmd_list_element *tcatch_cmdlist; | |
15105 | ||
9ac4176b | 15106 | void |
a121b7c1 | 15107 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15108 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15109 | completer_ftype *completer, |
44feb3ce TT |
15110 | void *user_data_catch, |
15111 | void *user_data_tcatch) | |
15112 | { | |
15113 | struct cmd_list_element *command; | |
15114 | ||
0450cc4c | 15115 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15116 | &catch_cmdlist); |
15117 | set_cmd_sfunc (command, sfunc); | |
15118 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15119 | set_cmd_completer (command, completer); |
44feb3ce | 15120 | |
0450cc4c | 15121 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15122 | &tcatch_cmdlist); |
15123 | set_cmd_sfunc (command, sfunc); | |
15124 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15125 | set_cmd_completer (command, completer); |
44feb3ce TT |
15126 | } |
15127 | ||
6149aea9 | 15128 | static void |
981a3fb3 | 15129 | save_command (const char *arg, int from_tty) |
6149aea9 | 15130 | { |
3e43a32a MS |
15131 | printf_unfiltered (_("\"save\" must be followed by " |
15132 | "the name of a save subcommand.\n")); | |
635c7e8a | 15133 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15134 | } |
15135 | ||
84f4c1fe PM |
15136 | struct breakpoint * |
15137 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15138 | void *data) | |
15139 | { | |
35df4500 | 15140 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15141 | |
35df4500 | 15142 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15143 | { |
15144 | if ((*callback) (b, data)) | |
15145 | return b; | |
15146 | } | |
15147 | ||
15148 | return NULL; | |
15149 | } | |
15150 | ||
0574c78f GB |
15151 | /* Zero if any of the breakpoint's locations could be a location where |
15152 | functions have been inlined, nonzero otherwise. */ | |
15153 | ||
15154 | static int | |
15155 | is_non_inline_function (struct breakpoint *b) | |
15156 | { | |
15157 | /* The shared library event breakpoint is set on the address of a | |
15158 | non-inline function. */ | |
15159 | if (b->type == bp_shlib_event) | |
15160 | return 1; | |
15161 | ||
15162 | return 0; | |
15163 | } | |
15164 | ||
15165 | /* Nonzero if the specified PC cannot be a location where functions | |
15166 | have been inlined. */ | |
15167 | ||
15168 | int | |
accd0bcd | 15169 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15170 | const struct target_waitstatus *ws) |
0574c78f GB |
15171 | { |
15172 | struct breakpoint *b; | |
15173 | struct bp_location *bl; | |
15174 | ||
15175 | ALL_BREAKPOINTS (b) | |
15176 | { | |
15177 | if (!is_non_inline_function (b)) | |
15178 | continue; | |
15179 | ||
15180 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15181 | { | |
15182 | if (!bl->shlib_disabled | |
09ac7c10 | 15183 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15184 | return 1; |
15185 | } | |
15186 | } | |
15187 | ||
15188 | return 0; | |
15189 | } | |
15190 | ||
2f202fde JK |
15191 | /* Remove any references to OBJFILE which is going to be freed. */ |
15192 | ||
15193 | void | |
15194 | breakpoint_free_objfile (struct objfile *objfile) | |
15195 | { | |
15196 | struct bp_location **locp, *loc; | |
15197 | ||
15198 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15199 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15200 | loc->symtab = NULL; |
15201 | } | |
15202 | ||
2060206e PA |
15203 | void |
15204 | initialize_breakpoint_ops (void) | |
15205 | { | |
15206 | static int initialized = 0; | |
15207 | ||
15208 | struct breakpoint_ops *ops; | |
15209 | ||
15210 | if (initialized) | |
15211 | return; | |
15212 | initialized = 1; | |
15213 | ||
15214 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15215 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15216 | internal and momentary breakpoints, etc.). */ | |
15217 | ops = &bkpt_base_breakpoint_ops; | |
15218 | *ops = base_breakpoint_ops; | |
15219 | ops->re_set = bkpt_re_set; | |
15220 | ops->insert_location = bkpt_insert_location; | |
15221 | ops->remove_location = bkpt_remove_location; | |
15222 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15223 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15224 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15225 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15226 | |
15227 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15228 | ops = &bkpt_breakpoint_ops; | |
15229 | *ops = bkpt_base_breakpoint_ops; | |
15230 | ops->re_set = bkpt_re_set; | |
15231 | ops->resources_needed = bkpt_resources_needed; | |
15232 | ops->print_it = bkpt_print_it; | |
15233 | ops->print_mention = bkpt_print_mention; | |
15234 | ops->print_recreate = bkpt_print_recreate; | |
15235 | ||
15236 | /* Ranged breakpoints. */ | |
15237 | ops = &ranged_breakpoint_ops; | |
15238 | *ops = bkpt_breakpoint_ops; | |
15239 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15240 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15241 | ops->print_it = print_it_ranged_breakpoint; | |
15242 | ops->print_one = print_one_ranged_breakpoint; | |
15243 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15244 | ops->print_mention = print_mention_ranged_breakpoint; | |
15245 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15246 | ||
15247 | /* Internal breakpoints. */ | |
15248 | ops = &internal_breakpoint_ops; | |
15249 | *ops = bkpt_base_breakpoint_ops; | |
15250 | ops->re_set = internal_bkpt_re_set; | |
15251 | ops->check_status = internal_bkpt_check_status; | |
15252 | ops->print_it = internal_bkpt_print_it; | |
15253 | ops->print_mention = internal_bkpt_print_mention; | |
15254 | ||
15255 | /* Momentary breakpoints. */ | |
15256 | ops = &momentary_breakpoint_ops; | |
15257 | *ops = bkpt_base_breakpoint_ops; | |
15258 | ops->re_set = momentary_bkpt_re_set; | |
15259 | ops->check_status = momentary_bkpt_check_status; | |
15260 | ops->print_it = momentary_bkpt_print_it; | |
15261 | ops->print_mention = momentary_bkpt_print_mention; | |
15262 | ||
55aa24fb SDJ |
15263 | /* Probe breakpoints. */ |
15264 | ops = &bkpt_probe_breakpoint_ops; | |
15265 | *ops = bkpt_breakpoint_ops; | |
15266 | ops->insert_location = bkpt_probe_insert_location; | |
15267 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15268 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15269 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15270 | |
2060206e PA |
15271 | /* Watchpoints. */ |
15272 | ops = &watchpoint_breakpoint_ops; | |
15273 | *ops = base_breakpoint_ops; | |
15274 | ops->re_set = re_set_watchpoint; | |
15275 | ops->insert_location = insert_watchpoint; | |
15276 | ops->remove_location = remove_watchpoint; | |
15277 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15278 | ops->check_status = check_status_watchpoint; | |
15279 | ops->resources_needed = resources_needed_watchpoint; | |
15280 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15281 | ops->print_it = print_it_watchpoint; | |
15282 | ops->print_mention = print_mention_watchpoint; | |
15283 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15284 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15285 | |
15286 | /* Masked watchpoints. */ | |
15287 | ops = &masked_watchpoint_breakpoint_ops; | |
15288 | *ops = watchpoint_breakpoint_ops; | |
15289 | ops->insert_location = insert_masked_watchpoint; | |
15290 | ops->remove_location = remove_masked_watchpoint; | |
15291 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15292 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15293 | ops->print_it = print_it_masked_watchpoint; | |
15294 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15295 | ops->print_mention = print_mention_masked_watchpoint; | |
15296 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15297 | ||
15298 | /* Tracepoints. */ | |
15299 | ops = &tracepoint_breakpoint_ops; | |
15300 | *ops = base_breakpoint_ops; | |
15301 | ops->re_set = tracepoint_re_set; | |
15302 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15303 | ops->print_one_detail = tracepoint_print_one_detail; | |
15304 | ops->print_mention = tracepoint_print_mention; | |
15305 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15306 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15307 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15308 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15309 | |
55aa24fb SDJ |
15310 | /* Probe tracepoints. */ |
15311 | ops = &tracepoint_probe_breakpoint_ops; | |
15312 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15313 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15314 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15315 | |
983af33b SDJ |
15316 | /* Static tracepoints with marker (`-m'). */ |
15317 | ops = &strace_marker_breakpoint_ops; | |
15318 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15319 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15320 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15321 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15322 | |
15323 | /* Fork catchpoints. */ | |
15324 | ops = &catch_fork_breakpoint_ops; | |
15325 | *ops = base_breakpoint_ops; | |
15326 | ops->insert_location = insert_catch_fork; | |
15327 | ops->remove_location = remove_catch_fork; | |
15328 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15329 | ops->print_it = print_it_catch_fork; | |
15330 | ops->print_one = print_one_catch_fork; | |
15331 | ops->print_mention = print_mention_catch_fork; | |
15332 | ops->print_recreate = print_recreate_catch_fork; | |
15333 | ||
15334 | /* Vfork catchpoints. */ | |
15335 | ops = &catch_vfork_breakpoint_ops; | |
15336 | *ops = base_breakpoint_ops; | |
15337 | ops->insert_location = insert_catch_vfork; | |
15338 | ops->remove_location = remove_catch_vfork; | |
15339 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15340 | ops->print_it = print_it_catch_vfork; | |
15341 | ops->print_one = print_one_catch_vfork; | |
15342 | ops->print_mention = print_mention_catch_vfork; | |
15343 | ops->print_recreate = print_recreate_catch_vfork; | |
15344 | ||
15345 | /* Exec catchpoints. */ | |
15346 | ops = &catch_exec_breakpoint_ops; | |
15347 | *ops = base_breakpoint_ops; | |
2060206e PA |
15348 | ops->insert_location = insert_catch_exec; |
15349 | ops->remove_location = remove_catch_exec; | |
15350 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15351 | ops->print_it = print_it_catch_exec; | |
15352 | ops->print_one = print_one_catch_exec; | |
15353 | ops->print_mention = print_mention_catch_exec; | |
15354 | ops->print_recreate = print_recreate_catch_exec; | |
15355 | ||
edcc5120 TT |
15356 | /* Solib-related catchpoints. */ |
15357 | ops = &catch_solib_breakpoint_ops; | |
15358 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15359 | ops->insert_location = insert_catch_solib; |
15360 | ops->remove_location = remove_catch_solib; | |
15361 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15362 | ops->check_status = check_status_catch_solib; | |
15363 | ops->print_it = print_it_catch_solib; | |
15364 | ops->print_one = print_one_catch_solib; | |
15365 | ops->print_mention = print_mention_catch_solib; | |
15366 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15367 | |
15368 | ops = &dprintf_breakpoint_ops; | |
15369 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15370 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15371 | ops->resources_needed = bkpt_resources_needed; |
15372 | ops->print_it = bkpt_print_it; | |
15373 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15374 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15375 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15376 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15377 | } |
15378 | ||
8bfd80db YQ |
15379 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15380 | ||
15381 | static struct cmd_list_element *enablebreaklist = NULL; | |
15382 | ||
8588b356 SM |
15383 | /* See breakpoint.h. */ |
15384 | ||
15385 | cmd_list_element *commands_cmd_element = nullptr; | |
15386 | ||
c906108c | 15387 | void |
fba45db2 | 15388 | _initialize_breakpoint (void) |
c906108c SS |
15389 | { |
15390 | struct cmd_list_element *c; | |
15391 | ||
2060206e PA |
15392 | initialize_breakpoint_ops (); |
15393 | ||
76727919 TT |
15394 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15395 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15396 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15397 | |
c906108c SS |
15398 | breakpoint_chain = 0; |
15399 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15400 | before a breakpoint is set. */ | |
15401 | breakpoint_count = 0; | |
15402 | ||
1042e4c0 SS |
15403 | tracepoint_count = 0; |
15404 | ||
1bedd215 AC |
15405 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15406 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15407 | Usage is `ignore N COUNT'.")); | |
c906108c | 15408 | |
8588b356 SM |
15409 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15410 | commands_command, _("\ | |
18da0c51 MG |
15411 | Set commands to be executed when the given breakpoints are hit.\n\ |
15412 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15413 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15414 | (e.g. `5-7').\n\ | |
c906108c SS |
15415 | With no argument, the targeted breakpoint is the last one set.\n\ |
15416 | The commands themselves follow starting on the next line.\n\ | |
15417 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15418 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15419 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15420 | |
d55637df | 15421 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15422 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15423 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15424 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15425 | set_cmd_completer (c, condition_completer); |
c906108c | 15426 | |
1bedd215 | 15427 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15428 | Set a temporary breakpoint.\n\ |
c906108c SS |
15429 | Like \"break\" except the breakpoint is only temporary,\n\ |
15430 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15431 | by using \"enable delete\" on the breakpoint number.\n\ |
15432 | \n" | |
15433 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15434 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15435 | |
1bedd215 | 15436 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15437 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15438 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15439 | some target hardware may not have this support.\n\ |
15440 | \n" | |
15441 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15442 | set_cmd_completer (c, location_completer); |
c906108c | 15443 | |
1bedd215 | 15444 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15445 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15446 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15447 | so it will be deleted when hit.\n\ |
15448 | \n" | |
15449 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15450 | set_cmd_completer (c, location_completer); |
c906108c | 15451 | |
1bedd215 AC |
15452 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15453 | Enable some breakpoints.\n\ | |
c906108c SS |
15454 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15455 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15456 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15457 | With a subcommand you can enable temporarily."), |
c906108c | 15458 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15459 | |
15460 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15461 | ||
84951ab5 | 15462 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15463 | Enable some breakpoints.\n\ |
c906108c SS |
15464 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15465 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15466 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15467 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15468 | |
1a966eab AC |
15469 | add_cmd ("once", no_class, enable_once_command, _("\ |
15470 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15471 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15472 | &enablebreaklist); |
15473 | ||
1a966eab AC |
15474 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15475 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15476 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15477 | &enablebreaklist); |
15478 | ||
816338b5 SS |
15479 | add_cmd ("count", no_class, enable_count_command, _("\ |
15480 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15481 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15482 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15483 | &enablebreaklist); | |
15484 | ||
1a966eab AC |
15485 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15486 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15487 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15488 | &enablelist); |
15489 | ||
1a966eab AC |
15490 | add_cmd ("once", no_class, enable_once_command, _("\ |
15491 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15492 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15493 | &enablelist); |
15494 | ||
15495 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15496 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15497 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15498 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15499 | &enablelist); |
15500 | ||
1bedd215 AC |
15501 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15502 | Disable some breakpoints.\n\ | |
c906108c SS |
15503 | Arguments are breakpoint numbers with spaces in between.\n\ |
15504 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15505 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15506 | &disablelist, "disable ", 1, &cmdlist); |
15507 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15508 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15509 | |
1a966eab AC |
15510 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15511 | Disable some breakpoints.\n\ | |
c906108c SS |
15512 | Arguments are breakpoint numbers with spaces in between.\n\ |
15513 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15514 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15515 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15516 | &disablelist); |
15517 | ||
1bedd215 AC |
15518 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15519 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15520 | Arguments are breakpoint numbers with spaces in between.\n\ |
15521 | To delete all breakpoints, give no argument.\n\ | |
15522 | \n\ | |
15523 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15524 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15525 | &deletelist, "delete ", 1, &cmdlist); |
15526 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15527 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15528 | |
1a966eab AC |
15529 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15530 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15531 | Arguments are breakpoint numbers with spaces in between.\n\ |
15532 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15533 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15534 | &deletelist); |
15535 | ||
1bedd215 | 15536 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15537 | Clear breakpoint at specified location.\n\ |
15538 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15539 | \n\ |
15540 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15541 | is executing in.\n" |
89549d7f | 15542 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15543 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15544 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15545 | |
1bedd215 | 15546 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15547 | Set breakpoint at specified location.\n" |
31e2b00f | 15548 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15549 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15550 | |
c906108c SS |
15551 | add_com_alias ("b", "break", class_run, 1); |
15552 | add_com_alias ("br", "break", class_run, 1); | |
15553 | add_com_alias ("bre", "break", class_run, 1); | |
15554 | add_com_alias ("brea", "break", class_run, 1); | |
15555 | ||
c906108c SS |
15556 | if (dbx_commands) |
15557 | { | |
1bedd215 AC |
15558 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15559 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15560 | &stoplist, "stop ", 1, &cmdlist); |
15561 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15562 | _("Break in function or address."), &stoplist); |
c5aa993b | 15563 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15564 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15565 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15566 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15567 | The \"Type\" column indicates one of:\n\ |
15568 | \tbreakpoint - normal breakpoint\n\ | |
15569 | \twatchpoint - watchpoint\n\ | |
15570 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15571 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15572 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15573 | address and file/line number respectively.\n\ |
15574 | \n\ | |
15575 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15576 | are set to the address of the last breakpoint listed unless the command\n\ |
15577 | is prefixed with \"server \".\n\n\ | |
c906108c | 15578 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15579 | breakpoint set.")); |
c906108c SS |
15580 | } |
15581 | ||
11db9430 | 15582 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15583 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15584 | The \"Type\" column indicates one of:\n\ |
15585 | \tbreakpoint - normal breakpoint\n\ | |
15586 | \twatchpoint - watchpoint\n\ | |
15587 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15588 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15589 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15590 | address and file/line number respectively.\n\ |
15591 | \n\ | |
15592 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15593 | are set to the address of the last breakpoint listed unless the command\n\ |
15594 | is prefixed with \"server \".\n\n\ | |
c906108c | 15595 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15596 | breakpoint set.")); |
c906108c | 15597 | |
6b04bdb7 MS |
15598 | add_info_alias ("b", "breakpoints", 1); |
15599 | ||
1a966eab AC |
15600 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15601 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15602 | The \"Type\" column indicates one of:\n\ |
15603 | \tbreakpoint - normal breakpoint\n\ | |
15604 | \twatchpoint - watchpoint\n\ | |
15605 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15606 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15607 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15608 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15609 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15610 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15611 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15612 | address and file/line number respectively.\n\ |
15613 | \n\ | |
15614 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15615 | are set to the address of the last breakpoint listed unless the command\n\ |
15616 | is prefixed with \"server \".\n\n\ | |
c906108c | 15617 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15618 | breakpoint set."), |
c906108c SS |
15619 | &maintenanceinfolist); |
15620 | ||
44feb3ce TT |
15621 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15622 | Set catchpoints to catch events."), | |
15623 | &catch_cmdlist, "catch ", | |
15624 | 0/*allow-unknown*/, &cmdlist); | |
15625 | ||
15626 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15627 | Set temporary catchpoints to catch events."), | |
15628 | &tcatch_cmdlist, "tcatch ", | |
15629 | 0/*allow-unknown*/, &cmdlist); | |
15630 | ||
44feb3ce TT |
15631 | add_catch_command ("fork", _("Catch calls to fork."), |
15632 | catch_fork_command_1, | |
a96d9b2e | 15633 | NULL, |
44feb3ce TT |
15634 | (void *) (uintptr_t) catch_fork_permanent, |
15635 | (void *) (uintptr_t) catch_fork_temporary); | |
15636 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15637 | catch_fork_command_1, | |
a96d9b2e | 15638 | NULL, |
44feb3ce TT |
15639 | (void *) (uintptr_t) catch_vfork_permanent, |
15640 | (void *) (uintptr_t) catch_vfork_temporary); | |
15641 | add_catch_command ("exec", _("Catch calls to exec."), | |
15642 | catch_exec_command_1, | |
a96d9b2e SDJ |
15643 | NULL, |
15644 | CATCH_PERMANENT, | |
15645 | CATCH_TEMPORARY); | |
edcc5120 TT |
15646 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15647 | Usage: catch load [REGEX]\n\ | |
15648 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15649 | catch_load_command_1, | |
15650 | NULL, | |
15651 | CATCH_PERMANENT, | |
15652 | CATCH_TEMPORARY); | |
15653 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15654 | Usage: catch unload [REGEX]\n\ | |
15655 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15656 | catch_unload_command_1, | |
15657 | NULL, | |
15658 | CATCH_PERMANENT, | |
15659 | CATCH_TEMPORARY); | |
c5aa993b | 15660 | |
1bedd215 AC |
15661 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15662 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15663 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15664 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15665 | an expression changes.\n\ |
15666 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15667 | the memory to which it refers.")); | |
65d12d83 | 15668 | set_cmd_completer (c, expression_completer); |
c906108c | 15669 | |
1bedd215 AC |
15670 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15671 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15672 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15673 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15674 | an expression is read.\n\ |
15675 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15676 | the memory to which it refers.")); | |
65d12d83 | 15677 | set_cmd_completer (c, expression_completer); |
c906108c | 15678 | |
1bedd215 AC |
15679 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15680 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15681 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15682 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15683 | an expression is either read or written.\n\ |
15684 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15685 | the memory to which it refers.")); | |
65d12d83 | 15686 | set_cmd_completer (c, expression_completer); |
c906108c | 15687 | |
11db9430 | 15688 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15689 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15690 | |
920d2a44 AC |
15691 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15692 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15693 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15694 | &can_use_hw_watchpoints, _("\ | |
15695 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15696 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15697 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15698 | such is available. (However, any hardware watchpoints that were\n\ | |
15699 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15700 | hardware.)"), |
15701 | NULL, | |
920d2a44 | 15702 | show_can_use_hw_watchpoints, |
85c07804 | 15703 | &setlist, &showlist); |
c906108c SS |
15704 | |
15705 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15706 | |
1042e4c0 SS |
15707 | /* Tracepoint manipulation commands. */ |
15708 | ||
15709 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15710 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15711 | \n" |
15712 | BREAK_ARGS_HELP ("trace") "\n\ | |
15713 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15714 | set_cmd_completer (c, location_completer); | |
15715 | ||
15716 | add_com_alias ("tp", "trace", class_alias, 0); | |
15717 | add_com_alias ("tr", "trace", class_alias, 1); | |
15718 | add_com_alias ("tra", "trace", class_alias, 1); | |
15719 | add_com_alias ("trac", "trace", class_alias, 1); | |
15720 | ||
7a697b8d | 15721 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15722 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15723 | \n" |
15724 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15725 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15726 | set_cmd_completer (c, location_completer); | |
15727 | ||
0fb4aa4b | 15728 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15729 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15730 | \n\ |
15731 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15732 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15733 | or -m MARKER_ID.\n\n\ | |
15734 | If a marker id is specified, probe the marker with that name. With\n\ | |
15735 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15736 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15737 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15738 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15739 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15740 | \n\ | |
15741 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15742 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15743 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15744 | conditions are different.\n\ | |
0fb4aa4b PA |
15745 | \n\ |
15746 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15747 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15748 | set_cmd_completer (c, location_completer); | |
15749 | ||
11db9430 | 15750 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15751 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15752 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15753 | last tracepoint set.")); | |
15754 | ||
15755 | add_info_alias ("tp", "tracepoints", 1); | |
15756 | ||
15757 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15758 | Delete specified tracepoints.\n\ | |
15759 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15760 | No argument means delete all tracepoints."), | |
15761 | &deletelist); | |
7e20dfcd | 15762 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15763 | |
15764 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15765 | Disable specified tracepoints.\n\ | |
15766 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15767 | No argument means disable all tracepoints."), | |
15768 | &disablelist); | |
15769 | deprecate_cmd (c, "disable"); | |
15770 | ||
15771 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15772 | Enable specified tracepoints.\n\ | |
15773 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15774 | No argument means enable all tracepoints."), | |
15775 | &enablelist); | |
15776 | deprecate_cmd (c, "enable"); | |
15777 | ||
15778 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15779 | Set the passcount for a tracepoint.\n\ | |
15780 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15781 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15782 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15783 | ||
6149aea9 PA |
15784 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15785 | _("Save breakpoint definitions as a script."), | |
15786 | &save_cmdlist, "save ", | |
15787 | 0/*allow-unknown*/, &cmdlist); | |
15788 | ||
15789 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15790 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15791 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15792 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15793 | session to restore them."), | |
15794 | &save_cmdlist); | |
15795 | set_cmd_completer (c, filename_completer); | |
15796 | ||
15797 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15798 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15799 | Use the 'source' command in another debug session to restore them."), |
15800 | &save_cmdlist); | |
1042e4c0 SS |
15801 | set_cmd_completer (c, filename_completer); |
15802 | ||
6149aea9 PA |
15803 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15804 | deprecate_cmd (c, "save tracepoints"); | |
15805 | ||
1bedd215 | 15806 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15807 | Breakpoint specific settings\n\ |
15808 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15809 | pending breakpoint behavior"), |
fa8d40ab JJ |
15810 | &breakpoint_set_cmdlist, "set breakpoint ", |
15811 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15812 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15813 | Breakpoint specific settings\n\ |
15814 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15815 | pending breakpoint behavior"), |
fa8d40ab JJ |
15816 | &breakpoint_show_cmdlist, "show breakpoint ", |
15817 | 0/*allow-unknown*/, &showlist); | |
15818 | ||
7915a72c AC |
15819 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15820 | &pending_break_support, _("\ | |
15821 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15822 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15823 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15824 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15825 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15826 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15827 | NULL, |
920d2a44 | 15828 | show_pending_break_support, |
6e1d7d6c AC |
15829 | &breakpoint_set_cmdlist, |
15830 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15831 | |
15832 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15833 | |
15834 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15835 | &automatic_hardware_breakpoints, _("\ | |
15836 | Set automatic usage of hardware breakpoints."), _("\ | |
15837 | Show automatic usage of hardware breakpoints."), _("\ | |
15838 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15839 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15840 | a warning will be emitted for such breakpoints."), | |
15841 | NULL, | |
15842 | show_automatic_hardware_breakpoints, | |
15843 | &breakpoint_set_cmdlist, | |
15844 | &breakpoint_show_cmdlist); | |
74960c60 | 15845 | |
a25a5a45 PA |
15846 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15847 | &always_inserted_mode, _("\ | |
74960c60 VP |
15848 | Set mode for inserting breakpoints."), _("\ |
15849 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15850 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15851 | they're created, kept inserted even when execution stops, and removed\n\ | |
15852 | only when the user deletes them. When this mode is off (the default),\n\ | |
15853 | breakpoints are inserted only when execution continues, and removed\n\ | |
15854 | when execution stops."), | |
72d0e2c5 YQ |
15855 | NULL, |
15856 | &show_always_inserted_mode, | |
15857 | &breakpoint_set_cmdlist, | |
15858 | &breakpoint_show_cmdlist); | |
f1310107 | 15859 | |
b775012e LM |
15860 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15861 | condition_evaluation_enums, | |
15862 | &condition_evaluation_mode_1, _("\ | |
15863 | Set mode of breakpoint condition evaluation."), _("\ | |
15864 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15865 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15866 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15867 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15868 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15869 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15870 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15871 | be set to \"gdb\""), | |
15872 | &set_condition_evaluation_mode, | |
15873 | &show_condition_evaluation_mode, | |
15874 | &breakpoint_set_cmdlist, | |
15875 | &breakpoint_show_cmdlist); | |
15876 | ||
f1310107 TJB |
15877 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15878 | Set a breakpoint for an address range.\n\ | |
15879 | break-range START-LOCATION, END-LOCATION\n\ | |
15880 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15881 | LINENUM, for that line in the current file,\n\ | |
15882 | FILE:LINENUM, for that line in that file,\n\ | |
15883 | +OFFSET, for that number of lines after the current line\n\ | |
15884 | or the start of the range\n\ | |
15885 | FUNCTION, for the first line in that function,\n\ | |
15886 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15887 | *ADDRESS, for the instruction at that address.\n\ | |
15888 | \n\ | |
15889 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15890 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15891 | range (including START-LOCATION and END-LOCATION).")); | |
15892 | ||
e7e0cddf | 15893 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15894 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15895 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15896 | location may be a linespec, explicit, or address location.\n" |
15897 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15898 | set_cmd_completer (c, location_completer); |
15899 | ||
15900 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15901 | dprintf_style_enums, &dprintf_style, _("\ | |
15902 | Set the style of usage for dynamic printf."), _("\ | |
15903 | Show the style of usage for dynamic printf."), _("\ | |
15904 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15905 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15906 | console, as with the \"printf\" command.\n\ | |
15907 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15908 | program; by default printf(), but you can choose a different function or\n\ | |
15909 | output stream by setting dprintf-function and dprintf-channel."), | |
15910 | update_dprintf_commands, NULL, | |
15911 | &setlist, &showlist); | |
15912 | ||
15913 | dprintf_function = xstrdup ("printf"); | |
15914 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15915 | &dprintf_function, _("\ | |
15916 | Set the function to use for dynamic printf"), _("\ | |
15917 | Show the function to use for dynamic printf"), NULL, | |
15918 | update_dprintf_commands, NULL, | |
15919 | &setlist, &showlist); | |
15920 | ||
15921 | dprintf_channel = xstrdup (""); | |
15922 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15923 | &dprintf_channel, _("\ | |
15924 | Set the channel to use for dynamic printf"), _("\ | |
15925 | Show the channel to use for dynamic printf"), NULL, | |
15926 | update_dprintf_commands, NULL, | |
15927 | &setlist, &showlist); | |
15928 | ||
d3ce09f5 SS |
15929 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15930 | &disconnected_dprintf, _("\ | |
15931 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15932 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15933 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15934 | even if GDB disconnects or detaches from the target."), | |
15935 | NULL, | |
15936 | NULL, | |
15937 | &setlist, &showlist); | |
15938 | ||
15939 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
15940 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
15941 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
15942 | ||
765dc015 | 15943 | automatic_hardware_breakpoints = 1; |
f3b1572e | 15944 | |
76727919 TT |
15945 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
15946 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 15947 | } |