Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 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 | 61 | #include "cli/cli-utils.h" |
d55e5aa6 | 62 | #include "stack.h" |
4de283e4 TT |
63 | #include "ax-gdb.h" |
64 | #include "dummy-frame.h" | |
65 | #include "interps.h" | |
268a13a5 | 66 | #include "gdbsupport/format.h" |
cfc31633 | 67 | #include "thread-fsm.h" |
5d5658a1 | 68 | #include "tid-parse.h" |
4de283e4 | 69 | #include "cli/cli-style.h" |
d3ce09f5 | 70 | |
1042e4c0 | 71 | /* readline include files */ |
073bbbb0 | 72 | #include "readline/tilde.h" |
1042e4c0 SS |
73 | |
74 | /* readline defines this. */ | |
75 | #undef savestring | |
76 | ||
034dad6f | 77 | #include "mi/mi-common.h" |
6dddc817 | 78 | #include "extension.h" |
325fac50 | 79 | #include <algorithm> |
5ed8105e | 80 | #include "progspace-and-thread.h" |
268a13a5 TT |
81 | #include "gdbsupport/array-view.h" |
82 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 83 | |
4a64f543 | 84 | /* Prototypes for local functions. */ |
c906108c | 85 | |
896b6bda | 86 | static void map_breakpoint_numbers (const char *, |
48649e1b | 87 | gdb::function_view<void (breakpoint *)>); |
c906108c | 88 | |
348d480f PA |
89 | static void breakpoint_re_set_default (struct breakpoint *); |
90 | ||
f00aae0f | 91 | static void |
626d2320 | 92 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
93 | struct linespec_result *canonical, |
94 | enum bptype type_wanted); | |
983af33b SDJ |
95 | |
96 | static void create_breakpoints_sal_default (struct gdbarch *, | |
97 | struct linespec_result *, | |
e1e01040 PA |
98 | gdb::unique_xmalloc_ptr<char>, |
99 | gdb::unique_xmalloc_ptr<char>, | |
100 | enum bptype, | |
983af33b SDJ |
101 | enum bpdisp, int, int, |
102 | int, | |
103 | const struct breakpoint_ops *, | |
44f238bb | 104 | int, int, int, unsigned); |
983af33b | 105 | |
6c5b2ebe | 106 | static std::vector<symtab_and_line> decode_location_default |
626d2320 | 107 | (struct breakpoint *b, struct event_location *location, |
6c5b2ebe | 108 | struct program_space *search_pspace); |
983af33b | 109 | |
a6535de1 TT |
110 | static int can_use_hardware_watchpoint |
111 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 112 | |
a14ed312 | 113 | static void mention (struct breakpoint *); |
c906108c | 114 | |
348d480f PA |
115 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
116 | enum bptype, | |
c0a91b2b | 117 | const struct breakpoint_ops *); |
3742cc8b YQ |
118 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
119 | const struct symtab_and_line *); | |
120 | ||
4a64f543 MS |
121 | /* This function is used in gdbtk sources and thus can not be made |
122 | static. */ | |
63c252f8 | 123 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 124 | struct symtab_and_line, |
c0a91b2b TT |
125 | enum bptype, |
126 | const struct breakpoint_ops *); | |
c906108c | 127 | |
06edf0c0 PA |
128 | static struct breakpoint * |
129 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
130 | enum bptype type, | |
a1aa2221 LM |
131 | const struct breakpoint_ops *ops, |
132 | int loc_enabled); | |
06edf0c0 | 133 | |
76897487 KB |
134 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
135 | ||
a6d9a66e UW |
136 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
137 | CORE_ADDR bpaddr, | |
dda83cd7 | 138 | enum bptype bptype); |
76897487 | 139 | |
6c95b8df PA |
140 | static void describe_other_breakpoints (struct gdbarch *, |
141 | struct program_space *, CORE_ADDR, | |
5af949e3 | 142 | struct obj_section *, int); |
c906108c | 143 | |
85d721b8 PA |
144 | static int watchpoint_locations_match (struct bp_location *loc1, |
145 | struct bp_location *loc2); | |
146 | ||
7f32a4d5 PA |
147 | static int breakpoint_locations_match (struct bp_location *loc1, |
148 | struct bp_location *loc2, | |
149 | bool sw_hw_bps_match = false); | |
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 | |
f431efe5 | 175 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 176 | |
39d61571 | 177 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 178 | |
44702360 PA |
179 | /* update_global_location_list's modes of operation wrt to whether to |
180 | insert locations now. */ | |
181 | enum ugll_insert_mode | |
182 | { | |
183 | /* Don't insert any breakpoint locations into the inferior, only | |
184 | remove already-inserted locations that no longer should be | |
185 | inserted. Functions that delete a breakpoint or breakpoints | |
186 | should specify this mode, so that deleting a breakpoint doesn't | |
187 | have the side effect of inserting the locations of other | |
188 | breakpoints that are marked not-inserted, but should_be_inserted | |
189 | returns true on them. | |
190 | ||
191 | This behavior is useful is situations close to tear-down -- e.g., | |
192 | after an exec, while the target still has execution, but | |
193 | breakpoint shadows of the previous executable image should *NOT* | |
194 | be restored to the new image; or before detaching, where the | |
195 | target still has execution and wants to delete breakpoints from | |
196 | GDB's lists, and all breakpoints had already been removed from | |
197 | the inferior. */ | |
198 | UGLL_DONT_INSERT, | |
199 | ||
a25a5a45 PA |
200 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
201 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
202 | UGLL_MAY_INSERT, |
203 | ||
a25a5a45 PA |
204 | /* Insert locations now, irrespective of |
205 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
206 | stopped right now, and the user did "continue". We need to | |
207 | insert breakpoints _before_ resuming the target, but | |
208 | UGLL_MAY_INSERT wouldn't insert them, because | |
209 | breakpoints_should_be_inserted_now returns false at that point, | |
210 | as no thread is running yet. */ | |
04086b45 | 211 | UGLL_INSERT |
44702360 PA |
212 | }; |
213 | ||
214 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 215 | |
44702360 | 216 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 217 | |
74960c60 | 218 | static void insert_breakpoint_locations (void); |
a5606eee | 219 | |
0b39b52e | 220 | static void trace_pass_command (const char *, int); |
1042e4c0 | 221 | |
558a9d82 YQ |
222 | static void set_tracepoint_count (int num); |
223 | ||
f2478a7e | 224 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 225 | |
983af33b SDJ |
226 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
227 | otherwise. */ | |
228 | ||
229 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 230 | |
2060206e PA |
231 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
232 | that are implemented on top of software or hardware breakpoints | |
233 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
234 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
235 | ||
236 | /* Internal breakpoints class type. */ | |
06edf0c0 | 237 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
238 | |
239 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
240 | static struct breakpoint_ops momentary_breakpoint_ops; |
241 | ||
2060206e PA |
242 | /* The breakpoint_ops structure to be used in regular user created |
243 | breakpoints. */ | |
244 | struct breakpoint_ops bkpt_breakpoint_ops; | |
245 | ||
55aa24fb SDJ |
246 | /* Breakpoints set on probes. */ |
247 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
248 | ||
bac7c5cf GB |
249 | /* Tracepoints set on probes. */ |
250 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
251 | ||
e7e0cddf | 252 | /* Dynamic printf class type. */ |
c5867ab6 | 253 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 254 | |
d3ce09f5 SS |
255 | /* The style in which to perform a dynamic printf. This is a user |
256 | option because different output options have different tradeoffs; | |
257 | if GDB does the printing, there is better error handling if there | |
258 | is a problem with any of the arguments, but using an inferior | |
259 | function lets you have special-purpose printers and sending of | |
260 | output to the same place as compiled-in print functions. */ | |
261 | ||
262 | static const char dprintf_style_gdb[] = "gdb"; | |
263 | static const char dprintf_style_call[] = "call"; | |
264 | static const char dprintf_style_agent[] = "agent"; | |
265 | static const char *const dprintf_style_enums[] = { | |
266 | dprintf_style_gdb, | |
267 | dprintf_style_call, | |
268 | dprintf_style_agent, | |
269 | NULL | |
270 | }; | |
271 | static const char *dprintf_style = dprintf_style_gdb; | |
272 | ||
273 | /* The function to use for dynamic printf if the preferred style is to | |
274 | call into the inferior. The value is simply a string that is | |
275 | copied into the command, so it can be anything that GDB can | |
276 | evaluate to a callable address, not necessarily a function name. */ | |
277 | ||
bde6261a | 278 | static char *dprintf_function; |
d3ce09f5 SS |
279 | |
280 | /* The channel to use for dynamic printf if the preferred style is to | |
281 | call into the inferior; if a nonempty string, it will be passed to | |
282 | the call as the first argument, with the format string as the | |
283 | second. As with the dprintf function, this can be anything that | |
284 | GDB knows how to evaluate, so in addition to common choices like | |
285 | "stderr", this could be an app-specific expression like | |
286 | "mystreams[curlogger]". */ | |
287 | ||
bde6261a | 288 | static char *dprintf_channel; |
d3ce09f5 SS |
289 | |
290 | /* True if dprintf commands should continue to operate even if GDB | |
291 | has disconnected. */ | |
491144b5 | 292 | static bool disconnected_dprintf = true; |
d3ce09f5 | 293 | |
5cea2a26 PA |
294 | struct command_line * |
295 | breakpoint_commands (struct breakpoint *b) | |
296 | { | |
d1b0a7bf | 297 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 298 | } |
3daf8fe5 | 299 | |
f3b1572e PA |
300 | /* Flag indicating that a command has proceeded the inferior past the |
301 | current breakpoint. */ | |
302 | ||
491144b5 | 303 | static bool breakpoint_proceeded; |
f3b1572e | 304 | |
956a9fb9 | 305 | const char * |
2cec12e5 AR |
306 | bpdisp_text (enum bpdisp disp) |
307 | { | |
4a64f543 MS |
308 | /* NOTE: the following values are a part of MI protocol and |
309 | represent values of 'disp' field returned when inferior stops at | |
310 | a breakpoint. */ | |
bc043ef3 | 311 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 312 | |
2cec12e5 AR |
313 | return bpdisps[(int) disp]; |
314 | } | |
c906108c | 315 | |
4a64f543 | 316 | /* Prototypes for exported functions. */ |
c906108c | 317 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 318 | if such is available. */ |
c906108c SS |
319 | static int can_use_hw_watchpoints; |
320 | ||
920d2a44 AC |
321 | static void |
322 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
323 | struct cmd_list_element *c, | |
324 | const char *value) | |
325 | { | |
3e43a32a MS |
326 | fprintf_filtered (file, |
327 | _("Debugger's willingness to use " | |
328 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
329 | value); |
330 | } | |
331 | ||
fa8d40ab JJ |
332 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
333 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 334 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
335 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
336 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
337 | static void |
338 | show_pending_break_support (struct ui_file *file, int from_tty, | |
339 | struct cmd_list_element *c, | |
340 | const char *value) | |
341 | { | |
3e43a32a MS |
342 | fprintf_filtered (file, |
343 | _("Debugger's behavior regarding " | |
344 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
345 | value); |
346 | } | |
fa8d40ab | 347 | |
491144b5 | 348 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 349 | set with "break" but falling in read-only memory. |
491144b5 | 350 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 351 | use hardware breakpoints. */ |
491144b5 | 352 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
353 | static void |
354 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
355 | struct cmd_list_element *c, | |
356 | const char *value) | |
357 | { | |
3e43a32a MS |
358 | fprintf_filtered (file, |
359 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
360 | value); |
361 | } | |
362 | ||
a25a5a45 PA |
363 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
364 | stopped, and immediately inserts any new breakpoints as soon as | |
365 | they're created. If off (default), GDB keeps breakpoints off of | |
366 | the target as long as possible. That is, it delays inserting | |
367 | breakpoints until the next resume, and removes them again when the | |
368 | target fully stops. This is a bit safer in case GDB crashes while | |
369 | processing user input. */ | |
491144b5 | 370 | static bool always_inserted_mode = false; |
72d0e2c5 | 371 | |
33e5cbd6 | 372 | static void |
74960c60 | 373 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 374 | struct cmd_list_element *c, const char *value) |
74960c60 | 375 | { |
a25a5a45 PA |
376 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
377 | value); | |
74960c60 VP |
378 | } |
379 | ||
b57bacec PA |
380 | /* See breakpoint.h. */ |
381 | ||
33e5cbd6 | 382 | int |
a25a5a45 | 383 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 384 | { |
a25a5a45 PA |
385 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
386 | { | |
387 | /* If breakpoints are global, they should be inserted even if no | |
388 | thread under gdb's control is running, or even if there are | |
389 | no threads under GDB's control yet. */ | |
390 | return 1; | |
391 | } | |
5b6d1e4f | 392 | else |
a25a5a45 | 393 | { |
a25a5a45 PA |
394 | if (always_inserted_mode) |
395 | { | |
396 | /* The user wants breakpoints inserted even if all threads | |
397 | are stopped. */ | |
398 | return 1; | |
399 | } | |
400 | ||
5b6d1e4f PA |
401 | for (inferior *inf : all_inferiors ()) |
402 | if (inf->has_execution () | |
403 | && threads_are_executing (inf->process_target ())) | |
404 | return 1; | |
372316f1 PA |
405 | |
406 | /* Don't remove breakpoints yet if, even though all threads are | |
407 | stopped, we still have events to process. */ | |
08036331 | 408 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
409 | if (tp->resumed |
410 | && tp->suspend.waitstatus_pending_p) | |
411 | return 1; | |
a25a5a45 PA |
412 | } |
413 | return 0; | |
33e5cbd6 | 414 | } |
765dc015 | 415 | |
b775012e LM |
416 | static const char condition_evaluation_both[] = "host or target"; |
417 | ||
418 | /* Modes for breakpoint condition evaluation. */ | |
419 | static const char condition_evaluation_auto[] = "auto"; | |
420 | static const char condition_evaluation_host[] = "host"; | |
421 | static const char condition_evaluation_target[] = "target"; | |
422 | static const char *const condition_evaluation_enums[] = { | |
423 | condition_evaluation_auto, | |
424 | condition_evaluation_host, | |
425 | condition_evaluation_target, | |
426 | NULL | |
427 | }; | |
428 | ||
429 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
430 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
431 | ||
432 | /* Global that we use to display information to the user (gets its value from | |
433 | condition_evaluation_mode_1. */ | |
434 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
435 | ||
436 | /* Translate a condition evaluation mode MODE into either "host" | |
437 | or "target". This is used mostly to translate from "auto" to the | |
438 | real setting that is being used. It returns the translated | |
439 | evaluation mode. */ | |
440 | ||
441 | static const char * | |
442 | translate_condition_evaluation_mode (const char *mode) | |
443 | { | |
444 | if (mode == condition_evaluation_auto) | |
445 | { | |
446 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
447 | return condition_evaluation_target; | |
448 | else | |
449 | return condition_evaluation_host; | |
450 | } | |
451 | else | |
452 | return mode; | |
453 | } | |
454 | ||
455 | /* Discovers what condition_evaluation_auto translates to. */ | |
456 | ||
457 | static const char * | |
458 | breakpoint_condition_evaluation_mode (void) | |
459 | { | |
460 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
461 | } | |
462 | ||
463 | /* Return true if GDB should evaluate breakpoint conditions or false | |
464 | otherwise. */ | |
465 | ||
466 | static int | |
467 | gdb_evaluates_breakpoint_condition_p (void) | |
468 | { | |
469 | const char *mode = breakpoint_condition_evaluation_mode (); | |
470 | ||
471 | return (mode == condition_evaluation_host); | |
472 | } | |
473 | ||
c906108c SS |
474 | /* Are we executing breakpoint commands? */ |
475 | static int executing_breakpoint_commands; | |
476 | ||
c02f5703 MS |
477 | /* Are overlay event breakpoints enabled? */ |
478 | static int overlay_events_enabled; | |
479 | ||
e09342b5 | 480 | /* See description in breakpoint.h. */ |
491144b5 | 481 | bool target_exact_watchpoints = false; |
e09342b5 | 482 | |
c906108c | 483 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 484 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 485 | current breakpoint. */ |
c906108c | 486 | |
5c44784c JM |
487 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
488 | for (B = breakpoint_chain; \ | |
489 | B ? (TMP=B->next, 1): 0; \ | |
490 | B = TMP) | |
c906108c | 491 | |
7cc221ef | 492 | /* Chains of all breakpoints defined. */ |
c906108c | 493 | |
81e6b8eb | 494 | static struct breakpoint *breakpoint_chain; |
c906108c | 495 | |
240edef6 | 496 | /* See breakpoint.h. */ |
43892fdf | 497 | |
240edef6 | 498 | breakpoint_range |
43892fdf SM |
499 | all_breakpoints () |
500 | { | |
501 | return breakpoint_range (breakpoint_chain); | |
502 | } | |
503 | ||
240edef6 | 504 | /* See breakpoint.h. */ |
1428b37a | 505 | |
240edef6 | 506 | breakpoint_safe_range |
1428b37a SM |
507 | all_breakpoints_safe () |
508 | { | |
509 | return breakpoint_safe_range (all_breakpoints ()); | |
510 | } | |
511 | ||
f6d17b2b SM |
512 | /* See breakpoint.h. */ |
513 | ||
514 | tracepoint_range | |
515 | all_tracepoints () | |
516 | { | |
517 | return tracepoint_range (breakpoint_chain); | |
518 | } | |
519 | ||
39ef2f62 | 520 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 521 | |
5d51cd5d | 522 | static std::vector<bp_location *> bp_locations; |
876fa593 | 523 | |
48d7020b SM |
524 | static const std::vector<bp_location *> & |
525 | all_bp_locations () | |
526 | { | |
527 | return bp_locations; | |
528 | } | |
529 | ||
e0d9a270 SM |
530 | /* Range to iterate over breakpoint locations at a given address. */ |
531 | ||
532 | struct bp_locations_at_addr_range | |
533 | { | |
534 | using iterator = std::vector<bp_location *>::iterator; | |
535 | ||
536 | bp_locations_at_addr_range (CORE_ADDR addr) | |
537 | { | |
538 | struct compare | |
539 | { | |
540 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
541 | { return loc->address < addr_; } | |
542 | ||
543 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
544 | { return addr_ < loc->address; } | |
545 | }; | |
546 | ||
547 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
548 | addr, compare ()); | |
549 | ||
550 | m_begin = it_pair.first; | |
551 | m_end = it_pair.second; | |
552 | } | |
553 | ||
554 | iterator begin () const | |
555 | { return m_begin; } | |
556 | ||
557 | iterator end () const | |
558 | { return m_end; } | |
559 | ||
560 | private: | |
561 | iterator m_begin; | |
562 | iterator m_end; | |
563 | }; | |
564 | ||
565 | /* Return a range to iterate over all breakpoint locations exactly at address | |
566 | ADDR. | |
567 | ||
568 | If it's needed to iterate multiple times on the same range, it's possible | |
569 | to save the range in a local variable and use it multiple times: | |
570 | ||
571 | auto range = all_bp_locations_at_addr (addr); | |
572 | ||
573 | for (bp_location *loc : range) | |
574 | // use loc | |
575 | ||
576 | for (bp_location *loc : range) | |
577 | // use loc | |
578 | ||
579 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
580 | the range's boundaries. Just remember not to change the bp_locations vector | |
581 | in the mean time, as it could make the range's iterators stale. */ | |
582 | ||
583 | static bp_locations_at_addr_range | |
584 | all_bp_locations_at_addr (CORE_ADDR addr) | |
585 | { | |
586 | return bp_locations_at_addr_range (addr); | |
587 | } | |
588 | ||
4a64f543 | 589 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 590 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 591 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 592 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 593 | an address you need to read. */ |
876fa593 | 594 | |
f5336ca5 | 595 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 596 | |
4a64f543 MS |
597 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
598 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
599 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
600 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 601 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 602 | |
f5336ca5 | 603 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 604 | |
4a64f543 | 605 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
606 | from the bp_locations array, but for which a hit may still be |
607 | reported by a target. */ | |
1123588c | 608 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 609 | |
c906108c SS |
610 | /* Number of last breakpoint made. */ |
611 | ||
95a42b64 TT |
612 | static int breakpoint_count; |
613 | ||
86b17b60 PA |
614 | /* The value of `breakpoint_count' before the last command that |
615 | created breakpoints. If the last (break-like) command created more | |
616 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
617 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
618 | static int prev_breakpoint_count; | |
c906108c | 619 | |
1042e4c0 SS |
620 | /* Number of last tracepoint made. */ |
621 | ||
95a42b64 | 622 | static int tracepoint_count; |
1042e4c0 | 623 | |
6149aea9 PA |
624 | static struct cmd_list_element *breakpoint_set_cmdlist; |
625 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 626 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 627 | |
badd37ce SDJ |
628 | /* See declaration at breakpoint.h. */ |
629 | ||
630 | struct breakpoint * | |
631 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
632 | void *user_data) | |
633 | { | |
43892fdf SM |
634 | for (breakpoint *b : all_breakpoints ()) |
635 | if (func (b, user_data) != 0) | |
636 | return b; | |
badd37ce | 637 | |
43892fdf | 638 | return nullptr; |
badd37ce SDJ |
639 | } |
640 | ||
468d015d JJ |
641 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
642 | static int | |
643 | breakpoint_enabled (struct breakpoint *b) | |
644 | { | |
0d381245 | 645 | return (b->enable_state == bp_enabled); |
468d015d JJ |
646 | } |
647 | ||
c906108c SS |
648 | /* Set breakpoint count to NUM. */ |
649 | ||
95a42b64 | 650 | static void |
fba45db2 | 651 | set_breakpoint_count (int num) |
c906108c | 652 | { |
86b17b60 | 653 | prev_breakpoint_count = breakpoint_count; |
c906108c | 654 | breakpoint_count = num; |
4fa62494 | 655 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
656 | } |
657 | ||
86b17b60 PA |
658 | /* Used by `start_rbreak_breakpoints' below, to record the current |
659 | breakpoint count before "rbreak" creates any breakpoint. */ | |
660 | static int rbreak_start_breakpoint_count; | |
661 | ||
95a42b64 TT |
662 | /* Called at the start an "rbreak" command to record the first |
663 | breakpoint made. */ | |
86b17b60 | 664 | |
c80049d3 | 665 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 666 | { |
86b17b60 | 667 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
668 | } |
669 | ||
670 | /* Called at the end of an "rbreak" command to record the last | |
671 | breakpoint made. */ | |
86b17b60 | 672 | |
c80049d3 | 673 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 674 | { |
86b17b60 | 675 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
676 | } |
677 | ||
4a64f543 | 678 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
679 | |
680 | void | |
fba45db2 | 681 | clear_breakpoint_hit_counts (void) |
c906108c | 682 | { |
43892fdf | 683 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
684 | b->hit_count = 0; |
685 | } | |
686 | ||
c906108c | 687 | \f |
48cb2d85 VP |
688 | /* Return the breakpoint with the specified number, or NULL |
689 | if the number does not refer to an existing breakpoint. */ | |
690 | ||
691 | struct breakpoint * | |
692 | get_breakpoint (int num) | |
693 | { | |
43892fdf | 694 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
695 | if (b->number == num) |
696 | return b; | |
697 | ||
43892fdf | 698 | return nullptr; |
48cb2d85 | 699 | } |
5c44784c | 700 | |
c906108c | 701 | \f |
adc36818 | 702 | |
b775012e LM |
703 | /* Mark locations as "conditions have changed" in case the target supports |
704 | evaluating conditions on its side. */ | |
705 | ||
706 | static void | |
707 | mark_breakpoint_modified (struct breakpoint *b) | |
708 | { | |
b775012e LM |
709 | /* This is only meaningful if the target is |
710 | evaluating conditions and if the user has | |
711 | opted for condition evaluation on the target's | |
712 | side. */ | |
713 | if (gdb_evaluates_breakpoint_condition_p () | |
714 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
715 | return; | |
716 | ||
717 | if (!is_breakpoint (b)) | |
718 | return; | |
719 | ||
40cb8ca5 | 720 | for (bp_location *loc : b->locations ()) |
b775012e LM |
721 | loc->condition_changed = condition_modified; |
722 | } | |
723 | ||
724 | /* Mark location as "conditions have changed" in case the target supports | |
725 | evaluating conditions on its side. */ | |
726 | ||
727 | static void | |
728 | mark_breakpoint_location_modified (struct bp_location *loc) | |
729 | { | |
730 | /* This is only meaningful if the target is | |
731 | evaluating conditions and if the user has | |
732 | opted for condition evaluation on the target's | |
733 | side. */ | |
734 | if (gdb_evaluates_breakpoint_condition_p () | |
735 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
736 | ||
737 | return; | |
738 | ||
739 | if (!is_breakpoint (loc->owner)) | |
740 | return; | |
741 | ||
742 | loc->condition_changed = condition_modified; | |
743 | } | |
744 | ||
745 | /* Sets the condition-evaluation mode using the static global | |
746 | condition_evaluation_mode. */ | |
747 | ||
748 | static void | |
eb4c3f4a | 749 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
750 | struct cmd_list_element *c) |
751 | { | |
b775012e LM |
752 | const char *old_mode, *new_mode; |
753 | ||
754 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
755 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
756 | { | |
757 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
758 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
759 | "Using host evaluation mode instead.")); | |
760 | return; | |
761 | } | |
762 | ||
763 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
764 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
765 | ||
abf1152a JK |
766 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
767 | settings was "auto". */ | |
768 | condition_evaluation_mode = condition_evaluation_mode_1; | |
769 | ||
b775012e LM |
770 | /* Only update the mode if the user picked a different one. */ |
771 | if (new_mode != old_mode) | |
772 | { | |
b775012e LM |
773 | /* If the user switched to a different evaluation mode, we |
774 | need to synch the changes with the target as follows: | |
775 | ||
776 | "host" -> "target": Send all (valid) conditions to the target. | |
777 | "target" -> "host": Remove all the conditions from the target. | |
778 | */ | |
779 | ||
b775012e LM |
780 | if (new_mode == condition_evaluation_target) |
781 | { | |
782 | /* Mark everything modified and synch conditions with the | |
783 | target. */ | |
48d7020b | 784 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
785 | mark_breakpoint_location_modified (loc); |
786 | } | |
787 | else | |
788 | { | |
789 | /* Manually mark non-duplicate locations to synch conditions | |
790 | with the target. We do this to remove all the conditions the | |
791 | target knows about. */ | |
48d7020b | 792 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
793 | if (is_breakpoint (loc->owner) && loc->inserted) |
794 | loc->needs_update = 1; | |
795 | } | |
796 | ||
797 | /* Do the update. */ | |
44702360 | 798 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
799 | } |
800 | ||
801 | return; | |
802 | } | |
803 | ||
804 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
805 | what "auto" is translating to. */ | |
806 | ||
807 | static void | |
808 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
809 | struct cmd_list_element *c, const char *value) | |
810 | { | |
811 | if (condition_evaluation_mode == condition_evaluation_auto) | |
812 | fprintf_filtered (file, | |
813 | _("Breakpoint condition evaluation " | |
814 | "mode is %s (currently %s).\n"), | |
815 | value, | |
816 | breakpoint_condition_evaluation_mode ()); | |
817 | else | |
818 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
819 | value); | |
820 | } | |
821 | ||
b5fa468f TBA |
822 | /* Parse COND_STRING in the context of LOC and set as the condition |
823 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
824 | the number of LOC within its owner. In case of parsing error, mark | |
825 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
826 | ||
827 | static void | |
828 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
829 | int bp_num, int loc_num) | |
830 | { | |
831 | bool has_junk = false; | |
832 | try | |
833 | { | |
834 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
835 | block_for_pc (loc->address), 0); | |
836 | if (*cond_string != 0) | |
837 | has_junk = true; | |
838 | else | |
839 | { | |
840 | loc->cond = std::move (new_exp); | |
841 | if (loc->disabled_by_cond && loc->enabled) | |
842 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
843 | "location %d, enabling.\n"), | |
844 | bp_num, loc_num); | |
845 | ||
846 | loc->disabled_by_cond = false; | |
847 | } | |
848 | } | |
849 | catch (const gdb_exception_error &e) | |
850 | { | |
851 | if (loc->enabled) | |
852 | { | |
853 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
854 | BP_NUM is 0 if the breakpoint is being defined for the first | |
855 | time using the "break ... if ..." command, and non-zero if | |
856 | already defined. */ | |
857 | if (bp_num != 0) | |
858 | warning (_("failed to validate condition at location %d.%d, " | |
859 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
860 | else | |
861 | warning (_("failed to validate condition at location %d, " | |
862 | "disabling:\n %s"), loc_num, e.what ()); | |
863 | } | |
864 | ||
865 | loc->disabled_by_cond = true; | |
866 | } | |
867 | ||
868 | if (has_junk) | |
869 | error (_("Garbage '%s' follows condition"), cond_string); | |
870 | } | |
871 | ||
adc36818 | 872 | void |
7a26bd4d | 873 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 874 | int from_tty, bool force) |
adc36818 | 875 | { |
4c55e970 | 876 | if (*exp == 0) |
3a5c3e22 | 877 | { |
4c55e970 TBA |
878 | xfree (b->cond_string); |
879 | b->cond_string = nullptr; | |
3a5c3e22 | 880 | |
4c55e970 | 881 | if (is_watchpoint (b)) |
78319c15 | 882 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
883 | else |
884 | { | |
b5fa468f | 885 | int loc_num = 1; |
40cb8ca5 | 886 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
887 | { |
888 | loc->cond.reset (); | |
b5fa468f TBA |
889 | if (loc->disabled_by_cond && loc->enabled) |
890 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
891 | "location %d, enabling.\n"), | |
892 | b->number, loc_num); | |
893 | loc->disabled_by_cond = false; | |
894 | loc_num++; | |
4c55e970 TBA |
895 | |
896 | /* No need to free the condition agent expression | |
897 | bytecode (if we have one). We will handle this | |
898 | when we go through update_global_location_list. */ | |
899 | } | |
900 | } | |
1e620590 | 901 | |
adc36818 PM |
902 | if (from_tty) |
903 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
904 | } | |
905 | else | |
906 | { | |
adc36818 PM |
907 | if (is_watchpoint (b)) |
908 | { | |
699bd4cf | 909 | innermost_block_tracker tracker; |
78319c15 | 910 | const char *arg = exp; |
4c55e970 | 911 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 912 | if (*arg != 0) |
adc36818 | 913 | error (_("Junk at end of expression")); |
78319c15 | 914 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 915 | w->cond_exp = std::move (new_exp); |
699bd4cf | 916 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
917 | } |
918 | else | |
919 | { | |
4c55e970 TBA |
920 | /* Parse and set condition expressions. We make two passes. |
921 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
922 | is valid in at least one location. If so, the condition |
923 | would be accepted. So we go ahead and set the locations' | |
924 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
925 | the error and the condition string will be rejected. |
926 | This two-pass approach is taken to avoid setting the | |
927 | state of locations in case of a reject. */ | |
40cb8ca5 | 928 | for (bp_location *loc : b->locations ()) |
4c55e970 | 929 | { |
b5fa468f TBA |
930 | try |
931 | { | |
932 | const char *arg = exp; | |
933 | parse_exp_1 (&arg, loc->address, | |
934 | block_for_pc (loc->address), 0); | |
935 | if (*arg != 0) | |
936 | error (_("Junk at end of expression")); | |
937 | break; | |
938 | } | |
939 | catch (const gdb_exception_error &e) | |
940 | { | |
941 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
942 | be the last loc, abandon (if not forced) or continue |
943 | (if forced). */ | |
944 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
945 | throw; |
946 | } | |
4c55e970 TBA |
947 | } |
948 | ||
b5fa468f | 949 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 950 | int loc_num = 1; |
40cb8ca5 SM |
951 | for (bp_location *loc : b->locations ()) |
952 | { | |
953 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
954 | loc_num++; | |
955 | } | |
adc36818 | 956 | } |
1e620590 TBA |
957 | |
958 | /* We know that the new condition parsed successfully. The | |
959 | condition string of the breakpoint can be safely updated. */ | |
960 | xfree (b->cond_string); | |
961 | b->cond_string = xstrdup (exp); | |
962 | b->condition_not_parsed = 0; | |
adc36818 | 963 | } |
b775012e LM |
964 | mark_breakpoint_modified (b); |
965 | ||
76727919 | 966 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
967 | } |
968 | ||
79aabb73 TBA |
969 | /* See breakpoint.h. */ |
970 | ||
971 | void | |
972 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
973 | bool force) | |
974 | { | |
43892fdf | 975 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
976 | if (b->number == bpnum) |
977 | { | |
978 | /* Check if this breakpoint has a "stop" method implemented in an | |
979 | extension language. This method and conditions entered into GDB | |
980 | from the CLI are mutually exclusive. */ | |
981 | const struct extension_language_defn *extlang | |
982 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
983 | ||
984 | if (extlang != NULL) | |
985 | { | |
986 | error (_("Only one stop condition allowed. There is currently" | |
987 | " a %s stop condition defined for this breakpoint."), | |
988 | ext_lang_capitalized_name (extlang)); | |
989 | } | |
990 | set_breakpoint_condition (b, exp, from_tty, force); | |
991 | ||
992 | if (is_breakpoint (b)) | |
993 | update_global_location_list (UGLL_MAY_INSERT); | |
994 | ||
995 | return; | |
996 | } | |
997 | ||
998 | error (_("No breakpoint number %d."), bpnum); | |
999 | } | |
1000 | ||
b1d4d8d1 TBA |
1001 | /* The options for the "condition" command. */ |
1002 | ||
1003 | struct condition_command_opts | |
1004 | { | |
1005 | /* For "-force". */ | |
1006 | bool force_condition = false; | |
1007 | }; | |
1008 | ||
1009 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1010 | ||
1011 | gdb::option::flag_option_def<condition_command_opts> { | |
1012 | "force", | |
1013 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1014 | N_("Set the condition even if it is invalid for all current locations."), | |
1015 | }, | |
1016 | ||
1017 | }; | |
1018 | ||
1019 | /* Create an option_def_group for the "condition" options, with | |
1020 | CC_OPTS as context. */ | |
1021 | ||
1022 | static inline gdb::option::option_def_group | |
1023 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1024 | { | |
1025 | return {{condition_command_option_defs}, cc_opts}; | |
1026 | } | |
1027 | ||
d55637df TT |
1028 | /* Completion for the "condition" command. */ |
1029 | ||
eb3ff9a5 | 1030 | static void |
6f937416 | 1031 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1032 | completion_tracker &tracker, |
b1d4d8d1 | 1033 | const char *text, const char * /*word*/) |
d55637df | 1034 | { |
b1d4d8d1 TBA |
1035 | bool has_no_arguments = (*text == '\0'); |
1036 | condition_command_opts cc_opts; | |
1037 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1038 | if (gdb::option::complete_options | |
1039 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1040 | return; | |
d55637df | 1041 | |
f1735a53 | 1042 | text = skip_spaces (text); |
b1d4d8d1 | 1043 | const char *space = skip_to_space (text); |
d55637df TT |
1044 | if (*space == '\0') |
1045 | { | |
1046 | int len; | |
d55637df TT |
1047 | |
1048 | if (text[0] == '$') | |
1049 | { | |
b1d4d8d1 | 1050 | tracker.advance_custom_word_point_by (1); |
d55637df | 1051 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1052 | if (!isdigit (text[1])) |
1053 | complete_internalvar (tracker, &text[1]); | |
1054 | return; | |
d55637df TT |
1055 | } |
1056 | ||
b1d4d8d1 TBA |
1057 | /* Suggest the "-force" flag if no arguments are given. If |
1058 | arguments were passed, they either already include the flag, | |
1059 | or we are beyond the point of suggesting it because it's | |
1060 | positionally the first argument. */ | |
1061 | if (has_no_arguments) | |
1062 | gdb::option::complete_on_all_options (tracker, group); | |
1063 | ||
d55637df TT |
1064 | /* We're completing the breakpoint number. */ |
1065 | len = strlen (text); | |
1066 | ||
43892fdf | 1067 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1068 | { |
1069 | char number[50]; | |
1070 | ||
1071 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1072 | ||
1073 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1074 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1075 | } |
d55637df | 1076 | |
eb3ff9a5 | 1077 | return; |
d55637df TT |
1078 | } |
1079 | ||
b1d4d8d1 TBA |
1080 | /* We're completing the expression part. Skip the breakpoint num. */ |
1081 | const char *exp_start = skip_spaces (space); | |
1082 | tracker.advance_custom_word_point_by (exp_start - text); | |
1083 | text = exp_start; | |
1084 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1085 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1086 | } |
1087 | ||
c906108c SS |
1088 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1089 | ||
1090 | static void | |
0b39b52e | 1091 | condition_command (const char *arg, int from_tty) |
c906108c | 1092 | { |
0b39b52e | 1093 | const char *p; |
52f0bd74 | 1094 | int bnum; |
c906108c SS |
1095 | |
1096 | if (arg == 0) | |
e2e0b3e5 | 1097 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1098 | |
1099 | p = arg; | |
733d554a TBA |
1100 | |
1101 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1102 | condition_command_opts cc_opts; |
1103 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1104 | gdb::option::process_options | |
1105 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1106 | |
c906108c | 1107 | bnum = get_number (&p); |
5c44784c | 1108 | if (bnum == 0) |
8a3fe4f8 | 1109 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1110 | |
79aabb73 | 1111 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1112 | } |
1113 | ||
a7bdde9e VP |
1114 | /* Check that COMMAND do not contain commands that are suitable |
1115 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1116 | Throw if any such commands is found. */ |
1117 | ||
a7bdde9e VP |
1118 | static void |
1119 | check_no_tracepoint_commands (struct command_line *commands) | |
1120 | { | |
1121 | struct command_line *c; | |
cc59ec59 | 1122 | |
a7bdde9e VP |
1123 | for (c = commands; c; c = c->next) |
1124 | { | |
a7bdde9e | 1125 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1126 | error (_("The 'while-stepping' command can " |
1127 | "only be used for tracepoints")); | |
a7bdde9e | 1128 | |
12973681 TT |
1129 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1130 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1131 | |
1132 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1133 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1134 | command directly. */ |
1135 | if (strstr (c->line, "collect ") == c->line) | |
1136 | error (_("The 'collect' command can only be used for tracepoints")); | |
1137 | ||
51661e93 VP |
1138 | if (strstr (c->line, "teval ") == c->line) |
1139 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1140 | } |
1141 | } | |
1142 | ||
c1fc2657 | 1143 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1144 | { |
c1fc2657 | 1145 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1146 | }; |
1147 | ||
d77f58be SS |
1148 | /* Encapsulate tests for different types of tracepoints. */ |
1149 | ||
3b0871f4 SM |
1150 | static bool |
1151 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1152 | { |
1153 | return (type == bp_tracepoint | |
1154 | || type == bp_fast_tracepoint | |
1155 | || type == bp_static_tracepoint); | |
1156 | } | |
1157 | ||
3b0871f4 SM |
1158 | static bool |
1159 | is_longjmp_type (bptype type) | |
1160 | { | |
1161 | return type == bp_longjmp || type == bp_exception; | |
1162 | } | |
1163 | ||
f2478a7e SM |
1164 | /* See breakpoint.h. */ |
1165 | ||
1166 | bool | |
d77f58be | 1167 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1168 | { |
d9b3f62e | 1169 | return is_tracepoint_type (b->type); |
a7bdde9e | 1170 | } |
d9b3f62e | 1171 | |
a5e364af SM |
1172 | /* Factory function to create an appropriate instance of breakpoint given |
1173 | TYPE. */ | |
1174 | ||
1175 | static std::unique_ptr<breakpoint> | |
1176 | new_breakpoint_from_type (bptype type) | |
1177 | { | |
1178 | breakpoint *b; | |
1179 | ||
1180 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1181 | b = new tracepoint (); |
3b0871f4 | 1182 | else if (is_longjmp_type (type)) |
c1fc2657 | 1183 | b = new longjmp_breakpoint (); |
a5e364af SM |
1184 | else |
1185 | b = new breakpoint (); | |
1186 | ||
1187 | return std::unique_ptr<breakpoint> (b); | |
1188 | } | |
1189 | ||
e5dd4106 | 1190 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1191 | breakpoint. This function will throw an exception if a problem is |
1192 | found. */ | |
48cb2d85 | 1193 | |
95a42b64 TT |
1194 | static void |
1195 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1196 | struct command_line *commands) | |
48cb2d85 | 1197 | { |
d77f58be | 1198 | if (is_tracepoint (b)) |
a7bdde9e | 1199 | { |
c9a6ce02 | 1200 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1201 | struct command_line *c; |
1202 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1203 | |
1204 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1205 | might have included a while-stepping action, while the new |
1206 | ones might not. */ | |
c9a6ce02 PA |
1207 | t->step_count = 0; |
1208 | ||
1209 | /* We need to verify that each top-level element of commands is | |
1210 | valid for tracepoints, that there's at most one | |
1211 | while-stepping element, and that the while-stepping's body | |
1212 | has valid tracing commands excluding nested while-stepping. | |
1213 | We also need to validate the tracepoint action line in the | |
1214 | context of the tracepoint --- validate_actionline actually | |
1215 | has side effects, like setting the tracepoint's | |
1216 | while-stepping STEP_COUNT, in addition to checking if the | |
1217 | collect/teval actions parse and make sense in the | |
1218 | tracepoint's context. */ | |
a7bdde9e VP |
1219 | for (c = commands; c; c = c->next) |
1220 | { | |
a7bdde9e VP |
1221 | if (c->control_type == while_stepping_control) |
1222 | { | |
1223 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1224 | error (_("The 'while-stepping' command " |
1225 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1226 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1227 | error (_("The 'while-stepping' command " |
1228 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1229 | |
1230 | if (while_stepping) | |
3e43a32a MS |
1231 | error (_("The 'while-stepping' command " |
1232 | "can be used only once")); | |
a7bdde9e VP |
1233 | else |
1234 | while_stepping = c; | |
1235 | } | |
c9a6ce02 PA |
1236 | |
1237 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1238 | } |
1239 | if (while_stepping) | |
1240 | { | |
1241 | struct command_line *c2; | |
1242 | ||
12973681 TT |
1243 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1244 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1245 | for (; c2; c2 = c2->next) |
1246 | { | |
a7bdde9e VP |
1247 | if (c2->control_type == while_stepping_control) |
1248 | error (_("The 'while-stepping' command cannot be nested")); | |
1249 | } | |
1250 | } | |
1251 | } | |
1252 | else | |
1253 | { | |
1254 | check_no_tracepoint_commands (commands); | |
1255 | } | |
95a42b64 TT |
1256 | } |
1257 | ||
0fb4aa4b PA |
1258 | /* Return a vector of all the static tracepoints set at ADDR. The |
1259 | caller is responsible for releasing the vector. */ | |
1260 | ||
f51e0e20 | 1261 | std::vector<breakpoint *> |
0fb4aa4b PA |
1262 | static_tracepoints_here (CORE_ADDR addr) |
1263 | { | |
f51e0e20 | 1264 | std::vector<breakpoint *> found; |
0fb4aa4b | 1265 | |
43892fdf | 1266 | for (breakpoint *b : all_breakpoints ()) |
0fb4aa4b PA |
1267 | if (b->type == bp_static_tracepoint) |
1268 | { | |
40cb8ca5 | 1269 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1270 | if (loc->address == addr) |
f51e0e20 | 1271 | found.push_back (b); |
0fb4aa4b PA |
1272 | } |
1273 | ||
1274 | return found; | |
1275 | } | |
1276 | ||
95a42b64 | 1277 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1278 | validate that only allowed commands are included. */ |
95a42b64 TT |
1279 | |
1280 | void | |
4a64f543 | 1281 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1282 | counted_command_line &&commands) |
95a42b64 | 1283 | { |
93921405 | 1284 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1285 | |
d1b0a7bf | 1286 | b->commands = std::move (commands); |
76727919 | 1287 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1288 | } |
1289 | ||
45a43567 TT |
1290 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1291 | is not the same as the "silent" that may appear in the breakpoint's | |
1292 | commands. */ | |
1293 | ||
1294 | void | |
1295 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1296 | { | |
1297 | int old_silent = b->silent; | |
1298 | ||
1299 | b->silent = silent; | |
1300 | if (old_silent != silent) | |
76727919 | 1301 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1302 | } |
1303 | ||
1304 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1305 | breakpoint work for any thread. */ | |
1306 | ||
1307 | void | |
1308 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1309 | { | |
1310 | int old_thread = b->thread; | |
1311 | ||
1312 | b->thread = thread; | |
1313 | if (old_thread != thread) | |
76727919 | 1314 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1315 | } |
1316 | ||
1317 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1318 | breakpoint work for any task. */ | |
1319 | ||
1320 | void | |
1321 | breakpoint_set_task (struct breakpoint *b, int task) | |
1322 | { | |
1323 | int old_task = b->task; | |
1324 | ||
1325 | b->task = task; | |
1326 | if (old_task != task) | |
76727919 | 1327 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1328 | } |
1329 | ||
95a42b64 | 1330 | static void |
896b6bda | 1331 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1332 | struct command_line *control) |
95a42b64 | 1333 | { |
d1b0a7bf | 1334 | counted_command_line cmd; |
999700cd PW |
1335 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1336 | NULL after the call to read_command_lines if the user provides an empty | |
1337 | list of command by just typing "end". */ | |
1338 | bool cmd_read = false; | |
95a42b64 | 1339 | |
896b6bda PA |
1340 | std::string new_arg; |
1341 | ||
95a42b64 TT |
1342 | if (arg == NULL || !*arg) |
1343 | { | |
da1df1db | 1344 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1345 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1346 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1347 | breakpoint_count); | |
95a42b64 | 1348 | else if (breakpoint_count > 0) |
896b6bda | 1349 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1350 | } |
da1df1db TBA |
1351 | else |
1352 | { | |
1353 | /* Create a copy of ARG. This is needed because the "commands" | |
1354 | command may be coming from a script. In that case, the read | |
1355 | line buffer is going to be overwritten in the lambda of | |
1356 | 'map_breakpoint_numbers' below when reading the next line | |
1357 | before we are are done parsing the breakpoint numbers. */ | |
1358 | new_arg = arg; | |
1359 | } | |
1360 | arg = new_arg.c_str (); | |
48649e1b TT |
1361 | |
1362 | map_breakpoint_numbers | |
1363 | (arg, [&] (breakpoint *b) | |
1364 | { | |
999700cd | 1365 | if (!cmd_read) |
48649e1b | 1366 | { |
999700cd | 1367 | gdb_assert (cmd == NULL); |
48649e1b | 1368 | if (control != NULL) |
12973681 | 1369 | cmd = control->body_list_0; |
48649e1b TT |
1370 | else |
1371 | { | |
81b1e71c TT |
1372 | std::string str |
1373 | = string_printf (_("Type commands for breakpoint(s) " | |
1374 | "%s, one per line."), | |
1375 | arg); | |
48649e1b | 1376 | |
60b3cef2 TT |
1377 | auto do_validate = [=] (const char *line) |
1378 | { | |
1379 | validate_actionline (line, b); | |
1380 | }; | |
1381 | gdb::function_view<void (const char *)> validator; | |
1382 | if (is_tracepoint (b)) | |
1383 | validator = do_validate; | |
1384 | ||
1385 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1386 | } |
999700cd | 1387 | cmd_read = true; |
48649e1b TT |
1388 | } |
1389 | ||
1390 | /* If a breakpoint was on the list more than once, we don't need to | |
1391 | do anything. */ | |
1392 | if (b->commands != cmd) | |
1393 | { | |
d1b0a7bf | 1394 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1395 | b->commands = cmd; |
76727919 | 1396 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1397 | } |
1398 | }); | |
95a42b64 TT |
1399 | } |
1400 | ||
1401 | static void | |
0b39b52e | 1402 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1403 | { |
1404 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1405 | } |
40c03ae8 EZ |
1406 | |
1407 | /* Like commands_command, but instead of reading the commands from | |
1408 | input stream, takes them from an already parsed command structure. | |
1409 | ||
1410 | This is used by cli-script.c to DTRT with breakpoint commands | |
1411 | that are part of if and while bodies. */ | |
1412 | enum command_control_type | |
896b6bda | 1413 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1414 | { |
95a42b64 TT |
1415 | commands_command_1 (arg, 0, cmd); |
1416 | return simple_control; | |
40c03ae8 | 1417 | } |
876fa593 JK |
1418 | |
1419 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1420 | ||
1421 | static int | |
1422 | bp_location_has_shadow (struct bp_location *bl) | |
1423 | { | |
1424 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1425 | return 0; | |
1426 | if (!bl->inserted) | |
1427 | return 0; | |
1428 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1429 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1430 | return 0; |
1431 | return 1; | |
1432 | } | |
1433 | ||
9d497a19 PA |
1434 | /* Update BUF, which is LEN bytes read from the target address |
1435 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1436 | contents. | |
1437 | ||
1438 | If READBUF is not NULL, this buffer must not overlap with the of | |
1439 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1440 | failed assertion internal error will be raised. */ | |
1441 | ||
1442 | static void | |
1443 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1444 | const gdb_byte *writebuf_org, | |
1445 | ULONGEST memaddr, LONGEST len, | |
1446 | struct bp_target_info *target_info, | |
1447 | struct gdbarch *gdbarch) | |
1448 | { | |
1449 | /* Now do full processing of the found relevant range of elements. */ | |
1450 | CORE_ADDR bp_addr = 0; | |
1451 | int bp_size = 0; | |
1452 | int bptoffset = 0; | |
1453 | ||
1454 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1455 | current_program_space->aspace, 0)) | |
1456 | { | |
1457 | /* The breakpoint is inserted in a different address space. */ | |
1458 | return; | |
1459 | } | |
1460 | ||
1461 | /* Addresses and length of the part of the breakpoint that | |
1462 | we need to copy. */ | |
1463 | bp_addr = target_info->placed_address; | |
1464 | bp_size = target_info->shadow_len; | |
1465 | ||
1466 | if (bp_addr + bp_size <= memaddr) | |
1467 | { | |
1468 | /* The breakpoint is entirely before the chunk of memory we are | |
1469 | reading. */ | |
1470 | return; | |
1471 | } | |
1472 | ||
1473 | if (bp_addr >= memaddr + len) | |
1474 | { | |
1475 | /* The breakpoint is entirely after the chunk of memory we are | |
1476 | reading. */ | |
1477 | return; | |
1478 | } | |
1479 | ||
1480 | /* Offset within shadow_contents. */ | |
1481 | if (bp_addr < memaddr) | |
1482 | { | |
1483 | /* Only copy the second part of the breakpoint. */ | |
1484 | bp_size -= memaddr - bp_addr; | |
1485 | bptoffset = memaddr - bp_addr; | |
1486 | bp_addr = memaddr; | |
1487 | } | |
1488 | ||
1489 | if (bp_addr + bp_size > memaddr + len) | |
1490 | { | |
1491 | /* Only copy the first part of the breakpoint. */ | |
1492 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1493 | } | |
1494 | ||
1495 | if (readbuf != NULL) | |
1496 | { | |
1497 | /* Verify that the readbuf buffer does not overlap with the | |
1498 | shadow_contents buffer. */ | |
1499 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1500 | || readbuf >= (target_info->shadow_contents | |
1501 | + target_info->shadow_len)); | |
1502 | ||
1503 | /* Update the read buffer with this inserted breakpoint's | |
1504 | shadow. */ | |
1505 | memcpy (readbuf + bp_addr - memaddr, | |
1506 | target_info->shadow_contents + bptoffset, bp_size); | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | const unsigned char *bp; | |
0d5ed153 MR |
1511 | CORE_ADDR addr = target_info->reqstd_address; |
1512 | int placed_size; | |
9d497a19 PA |
1513 | |
1514 | /* Update the shadow with what we want to write to memory. */ | |
1515 | memcpy (target_info->shadow_contents + bptoffset, | |
1516 | writebuf_org + bp_addr - memaddr, bp_size); | |
1517 | ||
1518 | /* Determine appropriate breakpoint contents and size for this | |
1519 | address. */ | |
0d5ed153 | 1520 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1521 | |
1522 | /* Update the final write buffer with this inserted | |
1523 | breakpoint's INSN. */ | |
1524 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1525 | } | |
1526 | } | |
1527 | ||
8defab1a | 1528 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1529 | by replacing any memory breakpoints with their shadowed contents. |
1530 | ||
35c63cd8 JB |
1531 | If READBUF is not NULL, this buffer must not overlap with any of |
1532 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1533 | a failed assertion internal error will be raised. | |
1534 | ||
876fa593 | 1535 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1536 | bl->address - bp_locations_placed_address_before_address_max |
1537 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1538 | The range we were requested to resolve shadows for is: |
1539 | memaddr ... memaddr + len | |
1540 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1541 | memaddr + len <= (bl->address |
f5336ca5 | 1542 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1543 | and: |
f5336ca5 | 1544 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1545 | |
8defab1a | 1546 | void |
f0ba3972 PA |
1547 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1548 | const gdb_byte *writebuf_org, | |
1549 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1550 | { |
4a64f543 MS |
1551 | /* Left boundary, right boundary and median element of our binary |
1552 | search. */ | |
876fa593 JK |
1553 | unsigned bc_l, bc_r, bc; |
1554 | ||
4a64f543 MS |
1555 | /* Find BC_L which is a leftmost element which may affect BUF |
1556 | content. It is safe to report lower value but a failure to | |
1557 | report higher one. */ | |
876fa593 JK |
1558 | |
1559 | bc_l = 0; | |
5d51cd5d | 1560 | bc_r = bp_locations.size (); |
876fa593 JK |
1561 | while (bc_l + 1 < bc_r) |
1562 | { | |
35df4500 | 1563 | struct bp_location *bl; |
876fa593 JK |
1564 | |
1565 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1566 | bl = bp_locations[bc]; |
876fa593 | 1567 | |
4a64f543 MS |
1568 | /* Check first BL->ADDRESS will not overflow due to the added |
1569 | constant. Then advance the left boundary only if we are sure | |
1570 | the BC element can in no way affect the BUF content (MEMADDR | |
1571 | to MEMADDR + LEN range). | |
876fa593 | 1572 | |
f5336ca5 | 1573 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1574 | offset so that we cannot miss a breakpoint with its shadow |
1575 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1576 | |
f5336ca5 | 1577 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1578 | >= bl->address) |
f5336ca5 | 1579 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1580 | <= memaddr)) |
876fa593 JK |
1581 | bc_l = bc; |
1582 | else | |
1583 | bc_r = bc; | |
1584 | } | |
1585 | ||
128070bb PA |
1586 | /* Due to the binary search above, we need to make sure we pick the |
1587 | first location that's at BC_L's address. E.g., if there are | |
1588 | multiple locations at the same address, BC_L may end up pointing | |
1589 | at a duplicate location, and miss the "master"/"inserted" | |
1590 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1591 | B: | |
1592 | ||
1593 | L1@A, L2@A, L3@B, ... | |
1594 | ||
1595 | BC_L could end up pointing at location L2, while the "master" | |
1596 | location could be L1. Since the `loc->inserted' flag is only set | |
1597 | on "master" locations, we'd forget to restore the shadow of L1 | |
1598 | and L2. */ | |
1599 | while (bc_l > 0 | |
f5336ca5 | 1600 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1601 | bc_l--; |
1602 | ||
876fa593 JK |
1603 | /* Now do full processing of the found relevant range of elements. */ |
1604 | ||
5d51cd5d | 1605 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
c5aa993b | 1606 | { |
f5336ca5 | 1607 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1608 | |
35df4500 TJB |
1609 | /* bp_location array has BL->OWNER always non-NULL. */ |
1610 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1611 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1612 | bl->owner->number); |
ffce0d52 | 1613 | |
e5dd4106 | 1614 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1615 | content. */ |
1616 | ||
f5336ca5 PA |
1617 | if (bl->address >= bp_locations_placed_address_before_address_max |
1618 | && memaddr + len <= (bl->address | |
1619 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1620 | break; |
1621 | ||
35df4500 | 1622 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1623 | continue; |
6c95b8df | 1624 | |
9d497a19 PA |
1625 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1626 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1627 | } | |
c906108c | 1628 | } |
9d497a19 | 1629 | |
f2478a7e | 1630 | /* See breakpoint.h. */ |
b775012e | 1631 | |
f2478a7e | 1632 | bool |
b775012e LM |
1633 | is_breakpoint (const struct breakpoint *bpt) |
1634 | { | |
1635 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1636 | || bpt->type == bp_hardware_breakpoint |
1637 | || bpt->type == bp_dprintf); | |
b775012e LM |
1638 | } |
1639 | ||
60e1c644 PA |
1640 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1641 | ||
f2478a7e | 1642 | static bool |
d77f58be | 1643 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1644 | { |
1645 | return (bpt->type == bp_hardware_watchpoint | |
1646 | || bpt->type == bp_read_watchpoint | |
1647 | || bpt->type == bp_access_watchpoint); | |
1648 | } | |
7270d8f2 | 1649 | |
f2478a7e | 1650 | /* See breakpoint.h. */ |
60e1c644 | 1651 | |
f2478a7e | 1652 | bool |
d77f58be | 1653 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1654 | { |
1655 | return (is_hardware_watchpoint (bpt) | |
1656 | || bpt->type == bp_watchpoint); | |
1657 | } | |
1658 | ||
3a5c3e22 PA |
1659 | /* Returns true if the current thread and its running state are safe |
1660 | to evaluate or update watchpoint B. Watchpoints on local | |
1661 | expressions need to be evaluated in the context of the thread that | |
1662 | was current when the watchpoint was created, and, that thread needs | |
1663 | to be stopped to be able to select the correct frame context. | |
1664 | Watchpoints on global expressions can be evaluated on any thread, | |
1665 | and in any state. It is presently left to the target allowing | |
1666 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1667 | |
1668 | static int | |
3a5c3e22 | 1669 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1670 | { |
c1fc2657 | 1671 | return (b->pspace == current_program_space |
d7e15655 TT |
1672 | && (b->watchpoint_thread == null_ptid |
1673 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1674 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1675 | } |
1676 | ||
d0fb5eae JK |
1677 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1678 | associated bp_watchpoint_scope breakpoint. */ | |
1679 | ||
1680 | static void | |
3a5c3e22 | 1681 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1682 | { |
c1fc2657 | 1683 | if (w->related_breakpoint != w) |
d0fb5eae | 1684 | { |
c1fc2657 SM |
1685 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1686 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1687 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1688 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1689 | w->related_breakpoint = w; | |
d0fb5eae | 1690 | } |
c1fc2657 | 1691 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1692 | } |
1693 | ||
bb9d5f81 PP |
1694 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1695 | watchpoint W. */ | |
1696 | ||
1697 | static struct value * | |
1698 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1699 | { | |
1700 | struct value *bit_val; | |
1701 | ||
1702 | if (val == NULL) | |
1703 | return NULL; | |
1704 | ||
1705 | bit_val = allocate_value (value_type (val)); | |
1706 | ||
1707 | unpack_value_bitfield (bit_val, | |
1708 | w->val_bitpos, | |
1709 | w->val_bitsize, | |
1710 | value_contents_for_printing (val), | |
1711 | value_offset (val), | |
1712 | val); | |
1713 | ||
1714 | return bit_val; | |
1715 | } | |
1716 | ||
c6d81124 PA |
1717 | /* Allocate a dummy location and add it to B, which must be a software |
1718 | watchpoint. This is required because even if a software watchpoint | |
1719 | is not watching any memory, bpstat_stop_status requires a location | |
1720 | to be able to report stops. */ | |
1721 | ||
1722 | static void | |
1723 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1724 | struct program_space *pspace) | |
1725 | { | |
1726 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1727 | ||
1728 | b->loc = allocate_bp_location (b); | |
1729 | b->loc->pspace = pspace; | |
1730 | b->loc->address = -1; | |
1731 | b->loc->length = -1; | |
1732 | } | |
1733 | ||
1734 | /* Returns true if B is a software watchpoint that is not watching any | |
1735 | memory (e.g., "watch $pc"). */ | |
1736 | ||
f2478a7e | 1737 | static bool |
c6d81124 PA |
1738 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1739 | { | |
1740 | return (b->type == bp_watchpoint | |
1741 | && b->loc != NULL | |
1742 | && b->loc->next == NULL | |
1743 | && b->loc->address == -1 | |
1744 | && b->loc->length == -1); | |
1745 | } | |
1746 | ||
567e1b4e JB |
1747 | /* Assuming that B is a watchpoint: |
1748 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1749 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1750 | - Evaluate the condition if there is one, and store the result |
1751 | in b->loc->cond. | |
a5606eee VP |
1752 | - Update the list of values that must be watched in B->loc. |
1753 | ||
4a64f543 MS |
1754 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1755 | nothing. If this is local watchpoint that is out of scope, delete | |
1756 | it. | |
1757 | ||
1758 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1759 | removed + inserted on each stop here. Normal breakpoints must | |
1760 | never be removed because they might be missed by a running thread | |
1761 | when debugging in non-stop mode. On the other hand, hardware | |
1762 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1763 | to each LWP since they are stored in each LWP's hardware debug | |
1764 | registers. Therefore, such LWP must be stopped first in order to | |
1765 | be able to modify its hardware watchpoints. | |
1766 | ||
1767 | Hardware watchpoints must be reset exactly once after being | |
1768 | presented to the user. It cannot be done sooner, because it would | |
1769 | reset the data used to present the watchpoint hit to the user. And | |
1770 | it must not be done later because it could display the same single | |
1771 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1772 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1773 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1774 | not user-visible - its hit is suppressed if the memory content has | |
1775 | not changed. | |
1776 | ||
1777 | The following constraints influence the location where we can reset | |
1778 | hardware watchpoints: | |
1779 | ||
1780 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1781 | called several times when GDB stops. | |
1782 | ||
1783 | [linux] | |
1784 | * Multiple hardware watchpoints can be hit at the same time, | |
1785 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1786 | hit at a time as the reason for stopping, and all the other hits | |
1787 | are presented later, one after the other, each time the user | |
1788 | requests the execution to be resumed. Execution is not resumed | |
1789 | for the threads still having pending hit event stored in | |
1790 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1791 | the inferior on the first stop the thread hit event is kept being | |
1792 | reported from its cached value by linux_nat_stopped_data_address | |
1793 | until the real thread resume happens after the watchpoint gets | |
1794 | presented and thus its LWP_INFO->STATUS gets reset. | |
1795 | ||
1796 | Therefore the hardware watchpoint hit can get safely reset on the | |
1797 | watchpoint removal from inferior. */ | |
a79d3c27 | 1798 | |
b40ce68a | 1799 | static void |
3a5c3e22 | 1800 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1801 | { |
a5606eee | 1802 | int within_current_scope; |
a5606eee | 1803 | struct frame_id saved_frame_id; |
66076460 | 1804 | int frame_saved; |
a5606eee | 1805 | |
f6bc2008 PA |
1806 | /* If this is a local watchpoint, we only want to check if the |
1807 | watchpoint frame is in scope if the current thread is the thread | |
1808 | that was used to create the watchpoint. */ | |
1809 | if (!watchpoint_in_thread_scope (b)) | |
1810 | return; | |
1811 | ||
c1fc2657 | 1812 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1813 | return; |
1814 | ||
66076460 | 1815 | frame_saved = 0; |
a5606eee VP |
1816 | |
1817 | /* Determine if the watchpoint is within scope. */ | |
1818 | if (b->exp_valid_block == NULL) | |
1819 | within_current_scope = 1; | |
1820 | else | |
1821 | { | |
b5db5dfc UW |
1822 | struct frame_info *fi = get_current_frame (); |
1823 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1824 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1825 | ||
c9cf6e20 MG |
1826 | /* If we're at a point where the stack has been destroyed |
1827 | (e.g. in a function epilogue), unwinding may not work | |
1828 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1829 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1830 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1831 | return; |
66076460 DJ |
1832 | |
1833 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1834 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1835 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1836 | took a frame parameter, so that we didn't have to change the |
1837 | selected frame. */ | |
66076460 DJ |
1838 | frame_saved = 1; |
1839 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1840 | ||
a5606eee VP |
1841 | fi = frame_find_by_id (b->watchpoint_frame); |
1842 | within_current_scope = (fi != NULL); | |
1843 | if (within_current_scope) | |
1844 | select_frame (fi); | |
1845 | } | |
1846 | ||
b5db5dfc UW |
1847 | /* We don't free locations. They are stored in the bp_location array |
1848 | and update_global_location_list will eventually delete them and | |
1849 | remove breakpoints if needed. */ | |
c1fc2657 | 1850 | b->loc = NULL; |
b5db5dfc | 1851 | |
a5606eee VP |
1852 | if (within_current_scope && reparse) |
1853 | { | |
bbc13ae3 | 1854 | const char *s; |
d63d0675 | 1855 | |
4d01a485 | 1856 | b->exp.reset (); |
d63d0675 | 1857 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1858 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1859 | /* If the meaning of expression itself changed, the old value is |
1860 | no longer relevant. We don't want to report a watchpoint hit | |
1861 | to the user when the old value and the new value may actually | |
1862 | be completely different objects. */ | |
fa4727a6 | 1863 | b->val = NULL; |
4c1d86d9 | 1864 | b->val_valid = false; |
60e1c644 PA |
1865 | |
1866 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1867 | expression is stored in the breakpoint object, not in the | |
1868 | locations (re)created below. */ | |
c1fc2657 | 1869 | if (b->cond_string != NULL) |
60e1c644 | 1870 | { |
4d01a485 | 1871 | b->cond_exp.reset (); |
60e1c644 | 1872 | |
c1fc2657 | 1873 | s = b->cond_string; |
1bb9788d | 1874 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1875 | } |
a5606eee | 1876 | } |
a5606eee VP |
1877 | |
1878 | /* If we failed to parse the expression, for example because | |
1879 | it refers to a global variable in a not-yet-loaded shared library, | |
1880 | don't try to insert watchpoint. We don't automatically delete | |
1881 | such watchpoint, though, since failure to parse expression | |
1882 | is different from out-of-scope watchpoint. */ | |
55f6301a | 1883 | if (!target_has_execution ()) |
2d134ed3 PA |
1884 | { |
1885 | /* Without execution, memory can't change. No use to try and | |
1886 | set watchpoint locations. The watchpoint will be reset when | |
1887 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1888 | if (!can_use_hw_watchpoints) |
1889 | { | |
c1fc2657 SM |
1890 | if (b->ops->works_in_software_mode (b)) |
1891 | b->type = bp_watchpoint; | |
e8369a73 | 1892 | else |
638aa5a1 AB |
1893 | error (_("Can't set read/access watchpoint when " |
1894 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1895 | } |
2d134ed3 PA |
1896 | } |
1897 | else if (within_current_scope && b->exp) | |
a5606eee | 1898 | { |
a6535de1 | 1899 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1900 | struct value *v, *result; |
2d134ed3 | 1901 | struct program_space *frame_pspace; |
a5606eee | 1902 | |
1eaebe02 | 1903 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 1904 | &val_chain, false); |
a5606eee | 1905 | |
a5606eee VP |
1906 | /* Avoid setting b->val if it's already set. The meaning of |
1907 | b->val is 'the last value' user saw, and we should update | |
1908 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1909 | happens, the code that reports it updates b->val directly. |
1910 | We don't keep track of the memory value for masked | |
1911 | watchpoints. */ | |
c1fc2657 | 1912 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1913 | { |
bb9d5f81 | 1914 | if (b->val_bitsize != 0) |
850645cf TT |
1915 | v = extract_bitfield_from_watchpoint_value (b, v); |
1916 | b->val = release_value (v); | |
4c1d86d9 | 1917 | b->val_valid = true; |
fa4727a6 | 1918 | } |
a5606eee | 1919 | |
2d134ed3 PA |
1920 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1921 | ||
a5606eee | 1922 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1923 | gdb_assert (!val_chain.empty ()); |
1924 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1925 | { |
a6535de1 TT |
1926 | v = iter.get (); |
1927 | ||
a5606eee VP |
1928 | /* If it's a memory location, and GDB actually needed |
1929 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1930 | must watch it. If the first value returned is |
1931 | still lazy, that means an error occurred reading it; | |
1932 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1933 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1934 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1935 | { |
1936 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1937 | |
a5606eee VP |
1938 | /* We only watch structs and arrays if user asked |
1939 | for it explicitly, never if they just happen to | |
1940 | appear in the middle of some value chain. */ | |
fa4727a6 | 1941 | if (v == result |
78134374 SM |
1942 | || (vtype->code () != TYPE_CODE_STRUCT |
1943 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
1944 | { |
1945 | CORE_ADDR addr; | |
f486487f | 1946 | enum target_hw_bp_type type; |
a5606eee | 1947 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1948 | int bitpos = 0, bitsize = 0; |
1949 | ||
1950 | if (value_bitsize (v) != 0) | |
1951 | { | |
1952 | /* Extract the bit parameters out from the bitfield | |
1953 | sub-expression. */ | |
1954 | bitpos = value_bitpos (v); | |
1955 | bitsize = value_bitsize (v); | |
1956 | } | |
1957 | else if (v == result && b->val_bitsize != 0) | |
1958 | { | |
1959 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1960 | lvalue whose bit parameters are saved in the fields | |
1961 | VAL_BITPOS and VAL_BITSIZE. */ | |
1962 | bitpos = b->val_bitpos; | |
1963 | bitsize = b->val_bitsize; | |
1964 | } | |
a5606eee | 1965 | |
42ae5230 | 1966 | addr = value_address (v); |
bb9d5f81 PP |
1967 | if (bitsize != 0) |
1968 | { | |
1969 | /* Skip the bytes that don't contain the bitfield. */ | |
1970 | addr += bitpos / 8; | |
1971 | } | |
1972 | ||
a5606eee | 1973 | type = hw_write; |
c1fc2657 | 1974 | if (b->type == bp_read_watchpoint) |
a5606eee | 1975 | type = hw_read; |
c1fc2657 | 1976 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1977 | type = hw_access; |
3a5c3e22 | 1978 | |
c1fc2657 SM |
1979 | loc = allocate_bp_location (b); |
1980 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1981 | ; |
1982 | *tmp = loc; | |
8ee511af | 1983 | loc->gdbarch = value_type (v)->arch (); |
6c95b8df PA |
1984 | |
1985 | loc->pspace = frame_pspace; | |
f17d9474 | 1986 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1987 | |
1988 | if (bitsize != 0) | |
1989 | { | |
1990 | /* Just cover the bytes that make up the bitfield. */ | |
1991 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1992 | } | |
1993 | else | |
1994 | loc->length = TYPE_LENGTH (value_type (v)); | |
1995 | ||
a5606eee VP |
1996 | loc->watchpoint_type = type; |
1997 | } | |
1998 | } | |
9fa40276 TJB |
1999 | } |
2000 | ||
2001 | /* Change the type of breakpoint between hardware assisted or | |
2002 | an ordinary watchpoint depending on the hardware support | |
2003 | and free hardware slots. REPARSE is set when the inferior | |
2004 | is started. */ | |
a9634178 | 2005 | if (reparse) |
9fa40276 | 2006 | { |
e09342b5 | 2007 | int reg_cnt; |
9fa40276 | 2008 | enum bp_loc_type loc_type; |
a5606eee | 2009 | |
a9634178 | 2010 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2011 | |
2012 | if (reg_cnt) | |
9fa40276 TJB |
2013 | { |
2014 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2015 | enum bptype type; |
9fa40276 | 2016 | |
a9634178 TJB |
2017 | /* Use an exact watchpoint when there's only one memory region to be |
2018 | watched, and only one debug register is needed to watch it. */ | |
2019 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2020 | ||
9fa40276 | 2021 | /* We need to determine how many resources are already |
e09342b5 TJB |
2022 | used for all other hardware watchpoints plus this one |
2023 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2024 | this watchpoint in as well. */ |
2025 | ||
2026 | /* If this is a software watchpoint, we try to turn it | |
2027 | to a hardware one -- count resources as if B was of | |
2028 | hardware watchpoint type. */ | |
c1fc2657 | 2029 | type = b->type; |
a1398e0c PA |
2030 | if (type == bp_watchpoint) |
2031 | type = bp_hardware_watchpoint; | |
2032 | ||
2033 | /* This watchpoint may or may not have been placed on | |
2034 | the list yet at this point (it won't be in the list | |
2035 | if we're trying to create it for the first time, | |
2036 | through watch_command), so always account for it | |
2037 | manually. */ | |
2038 | ||
2039 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2040 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2041 | |
2042 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2043 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2044 | |
2045 | target_resources_ok | |
2046 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2047 | if (target_resources_ok <= 0) |
a9634178 | 2048 | { |
c1fc2657 | 2049 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
2050 | |
2051 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2052 | error (_("Target does not support this type of " |
2053 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2054 | else if (target_resources_ok < 0 && !sw_mode) |
2055 | error (_("There are not enough available hardware " | |
2056 | "resources for this watchpoint.")); | |
a1398e0c PA |
2057 | |
2058 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2059 | b->type = bp_watchpoint; |
a1398e0c PA |
2060 | } |
2061 | else | |
2062 | { | |
2063 | /* If this was a software watchpoint, we've just | |
2064 | found we have enough resources to turn it to a | |
2065 | hardware watchpoint. Otherwise, this is a | |
2066 | nop. */ | |
c1fc2657 | 2067 | b->type = type; |
a9634178 | 2068 | } |
9fa40276 | 2069 | } |
c1fc2657 | 2070 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
2071 | { |
2072 | if (!can_use_hw_watchpoints) | |
2073 | error (_("Can't set read/access watchpoint when " | |
2074 | "hardware watchpoints are disabled.")); | |
2075 | else | |
2076 | error (_("Expression cannot be implemented with " | |
2077 | "read/access watchpoint.")); | |
2078 | } | |
9fa40276 | 2079 | else |
c1fc2657 | 2080 | b->type = bp_watchpoint; |
9fa40276 | 2081 | |
c1fc2657 | 2082 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2083 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2084 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2085 | bl->loc_type = loc_type; |
2086 | } | |
2087 | ||
c7437ca6 PA |
2088 | /* If a software watchpoint is not watching any memory, then the |
2089 | above left it without any location set up. But, | |
2090 | bpstat_stop_status requires a location to be able to report | |
2091 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2092 | if (b->type == bp_watchpoint && b->loc == NULL) |
2093 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2094 | } |
2095 | else if (!within_current_scope) | |
7270d8f2 | 2096 | { |
ac74f770 MS |
2097 | printf_filtered (_("\ |
2098 | Watchpoint %d deleted because the program has left the block\n\ | |
2099 | in which its expression is valid.\n"), | |
c1fc2657 | 2100 | b->number); |
d0fb5eae | 2101 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2102 | } |
a5606eee VP |
2103 | |
2104 | /* Restore the selected frame. */ | |
66076460 DJ |
2105 | if (frame_saved) |
2106 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2107 | } |
2108 | ||
a5606eee | 2109 | |
74960c60 | 2110 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2111 | inserted in the inferior. We don't differentiate the type of BL's owner |
2112 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2113 | breakpoint_ops is not defined, because in insert_bp_location, | |
2114 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2115 | static int |
35df4500 | 2116 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2117 | { |
35df4500 | 2118 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2119 | return 0; |
2120 | ||
35df4500 | 2121 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2122 | return 0; |
2123 | ||
b5fa468f TBA |
2124 | if (!bl->enabled || bl->disabled_by_cond |
2125 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2126 | return 0; |
2127 | ||
f8eba3c6 TT |
2128 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2129 | return 0; | |
2130 | ||
56710373 PA |
2131 | /* This is set for example, when we're attached to the parent of a |
2132 | vfork, and have detached from the child. The child is running | |
2133 | free, and we expect it to do an exec or exit, at which point the | |
2134 | OS makes the parent schedulable again (and the target reports | |
2135 | that the vfork is done). Until the child is done with the shared | |
2136 | memory region, do not insert breakpoints in the parent, otherwise | |
2137 | the child could still trip on the parent's breakpoints. Since | |
2138 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2139 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2140 | return 0; |
2141 | ||
31e77af2 | 2142 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2143 | location, except if the breakpoint is a single-step breakpoint, |
2144 | and the breakpoint's thread is the thread which is stepping past | |
2145 | a breakpoint. */ | |
31e77af2 PA |
2146 | if ((bl->loc_type == bp_loc_software_breakpoint |
2147 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2148 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2149 | bl->address) |
2150 | /* The single-step breakpoint may be inserted at the location | |
2151 | we're trying to step if the instruction branches to itself. | |
2152 | However, the instruction won't be executed at all and it may | |
2153 | break the semantics of the instruction, for example, the | |
2154 | instruction is a conditional branch or updates some flags. | |
2155 | We can't fix it unless GDB is able to emulate the instruction | |
2156 | or switch to displaced stepping. */ | |
2157 | && !(bl->owner->type == bp_single_step | |
2158 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2159 | { |
1eb8556f SM |
2160 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2161 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2162 | return 0; |
2163 | } | |
31e77af2 | 2164 | |
963f9c80 PA |
2165 | /* Don't insert watchpoints if we're trying to step past the |
2166 | instruction that triggered one. */ | |
2167 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2168 | && stepping_past_nonsteppable_watchpoint ()) | |
2169 | { | |
1eb8556f | 2170 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2171 | "skipping watchpoint at %s:%d", |
1eb8556f | 2172 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2173 | return 0; |
2174 | } | |
2175 | ||
74960c60 VP |
2176 | return 1; |
2177 | } | |
2178 | ||
934709f0 PW |
2179 | /* Same as should_be_inserted but does the check assuming |
2180 | that the location is not duplicated. */ | |
2181 | ||
2182 | static int | |
2183 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2184 | { | |
2185 | int result; | |
2186 | const int save_duplicate = bl->duplicate; | |
2187 | ||
2188 | bl->duplicate = 0; | |
2189 | result = should_be_inserted (bl); | |
2190 | bl->duplicate = save_duplicate; | |
2191 | return result; | |
2192 | } | |
2193 | ||
b775012e LM |
2194 | /* Parses a conditional described by an expression COND into an |
2195 | agent expression bytecode suitable for evaluation | |
2196 | by the bytecode interpreter. Return NULL if there was | |
2197 | any error during parsing. */ | |
2198 | ||
833177a4 | 2199 | static agent_expr_up |
b775012e LM |
2200 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2201 | { | |
833177a4 | 2202 | if (cond == NULL) |
b775012e LM |
2203 | return NULL; |
2204 | ||
833177a4 PA |
2205 | agent_expr_up aexpr; |
2206 | ||
b775012e LM |
2207 | /* We don't want to stop processing, so catch any errors |
2208 | that may show up. */ | |
a70b8144 | 2209 | try |
b775012e | 2210 | { |
036e657b | 2211 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2212 | } |
2213 | ||
230d2906 | 2214 | catch (const gdb_exception_error &ex) |
b775012e LM |
2215 | { |
2216 | /* If we got here, it means the condition could not be parsed to a valid | |
2217 | bytecode expression and thus can't be evaluated on the target's side. | |
2218 | It's no use iterating through the conditions. */ | |
b775012e LM |
2219 | } |
2220 | ||
2221 | /* We have a valid agent expression. */ | |
2222 | return aexpr; | |
2223 | } | |
2224 | ||
2225 | /* Based on location BL, create a list of breakpoint conditions to be | |
2226 | passed on to the target. If we have duplicated locations with different | |
2227 | conditions, we will add such conditions to the list. The idea is that the | |
2228 | target will evaluate the list of conditions and will only notify GDB when | |
2229 | one of them is true. */ | |
2230 | ||
2231 | static void | |
2232 | build_target_condition_list (struct bp_location *bl) | |
2233 | { | |
b775012e LM |
2234 | int null_condition_or_parse_error = 0; |
2235 | int modified = bl->needs_update; | |
b775012e | 2236 | |
8b4f3082 | 2237 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2238 | bl->target_info.conditions.clear (); |
8b4f3082 | 2239 | |
b775012e LM |
2240 | /* This is only meaningful if the target is |
2241 | evaluating conditions and if the user has | |
2242 | opted for condition evaluation on the target's | |
2243 | side. */ | |
2244 | if (gdb_evaluates_breakpoint_condition_p () | |
2245 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2246 | return; | |
2247 | ||
e0d9a270 SM |
2248 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2249 | ||
b775012e | 2250 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2251 | conditions or conditions that fail to parse to a valid agent |
2252 | expression bytecode. If any of these happen, then it's no use to | |
2253 | send conditions to the target since this location will always | |
2254 | trigger and generate a response back to GDB. Note we consider | |
2255 | all locations at the same address irrespective of type, i.e., | |
2256 | even if the locations aren't considered duplicates (e.g., | |
2257 | software breakpoint and hardware breakpoint at the same | |
2258 | address). */ | |
e0d9a270 | 2259 | for (bp_location *loc : loc_range) |
b775012e | 2260 | { |
b775012e LM |
2261 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2262 | { | |
2263 | if (modified) | |
2264 | { | |
b775012e LM |
2265 | /* Re-parse the conditions since something changed. In that |
2266 | case we already freed the condition bytecodes (see | |
2267 | force_breakpoint_reinsertion). We just | |
2268 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2269 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2270 | loc->cond.get ()); | |
b775012e LM |
2271 | } |
2272 | ||
2273 | /* If we have a NULL bytecode expression, it means something | |
2274 | went wrong or we have a null condition expression. */ | |
2275 | if (!loc->cond_bytecode) | |
2276 | { | |
2277 | null_condition_or_parse_error = 1; | |
2278 | break; | |
2279 | } | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | /* If any of these happened, it means we will have to evaluate the conditions | |
2284 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2285 | for all the other duplicate locations, thus we free all of them here. | |
2286 | ||
2287 | This is so we have a finer control over which locations' conditions are | |
2288 | being evaluated by GDB or the remote stub. */ | |
2289 | if (null_condition_or_parse_error) | |
2290 | { | |
e0d9a270 | 2291 | for (bp_location *loc : loc_range) |
b775012e | 2292 | { |
b775012e LM |
2293 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2294 | { | |
2295 | /* Only go as far as the first NULL bytecode is | |
2296 | located. */ | |
2297 | if (!loc->cond_bytecode) | |
2298 | return; | |
2299 | ||
833177a4 | 2300 | loc->cond_bytecode.reset (); |
b775012e LM |
2301 | } |
2302 | } | |
2303 | } | |
2304 | ||
7f32a4d5 PA |
2305 | /* No NULL conditions or failed bytecode generation. Build a |
2306 | condition list for this location's address. If we have software | |
2307 | and hardware locations at the same address, they aren't | |
2308 | considered duplicates, but we still marge all the conditions | |
2309 | anyway, as it's simpler, and doesn't really make a practical | |
2310 | difference. */ | |
e0d9a270 SM |
2311 | for (bp_location *loc : loc_range) |
2312 | if (loc->cond | |
2313 | && is_breakpoint (loc->owner) | |
2314 | && loc->pspace->num == bl->pspace->num | |
2315 | && loc->owner->enable_state == bp_enabled | |
2316 | && loc->enabled | |
2317 | && !loc->disabled_by_cond) | |
2318 | { | |
2319 | /* Add the condition to the vector. This will be used later | |
2320 | to send the conditions to the target. */ | |
2321 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2322 | } | |
b775012e LM |
2323 | |
2324 | return; | |
2325 | } | |
2326 | ||
d3ce09f5 SS |
2327 | /* Parses a command described by string CMD into an agent expression |
2328 | bytecode suitable for evaluation by the bytecode interpreter. | |
2329 | Return NULL if there was any error during parsing. */ | |
2330 | ||
833177a4 | 2331 | static agent_expr_up |
d3ce09f5 SS |
2332 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2333 | { | |
bbc13ae3 KS |
2334 | const char *cmdrest; |
2335 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2336 | struct gdbarch *gdbarch = get_current_arch (); |
2337 | ||
833177a4 | 2338 | if (cmd == NULL) |
d3ce09f5 SS |
2339 | return NULL; |
2340 | ||
2341 | cmdrest = cmd; | |
2342 | ||
2343 | if (*cmdrest == ',') | |
2344 | ++cmdrest; | |
f1735a53 | 2345 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2346 | |
2347 | if (*cmdrest++ != '"') | |
2348 | error (_("No format string following the location")); | |
2349 | ||
2350 | format_start = cmdrest; | |
2351 | ||
8e481c3b | 2352 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2353 | |
2354 | format_end = cmdrest; | |
2355 | ||
2356 | if (*cmdrest++ != '"') | |
2357 | error (_("Bad format string, non-terminated '\"'.")); | |
2358 | ||
f1735a53 | 2359 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2360 | |
2361 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2362 | error (_("Invalid argument syntax")); | |
2363 | ||
2364 | if (*cmdrest == ',') | |
2365 | cmdrest++; | |
f1735a53 | 2366 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2367 | |
2368 | /* For each argument, make an expression. */ | |
2369 | ||
8e481c3b | 2370 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2371 | while (*cmdrest != '\0') |
2372 | { | |
bbc13ae3 | 2373 | const char *cmd1; |
d3ce09f5 SS |
2374 | |
2375 | cmd1 = cmdrest; | |
4d01a485 | 2376 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2377 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2378 | cmdrest = cmd1; |
2379 | if (*cmdrest == ',') | |
2380 | ++cmdrest; | |
2381 | } | |
2382 | ||
833177a4 PA |
2383 | agent_expr_up aexpr; |
2384 | ||
d3ce09f5 SS |
2385 | /* We don't want to stop processing, so catch any errors |
2386 | that may show up. */ | |
a70b8144 | 2387 | try |
d3ce09f5 | 2388 | { |
036e657b JB |
2389 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2390 | format_start, format_end - format_start, | |
8e481c3b | 2391 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2392 | } |
230d2906 | 2393 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2394 | { |
2395 | /* If we got here, it means the command could not be parsed to a valid | |
2396 | bytecode expression and thus can't be evaluated on the target's side. | |
2397 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2398 | } |
492d29ea | 2399 | |
d3ce09f5 SS |
2400 | /* We have a valid agent expression, return it. */ |
2401 | return aexpr; | |
2402 | } | |
2403 | ||
2404 | /* Based on location BL, create a list of breakpoint commands to be | |
2405 | passed on to the target. If we have duplicated locations with | |
2406 | different commands, we will add any such to the list. */ | |
2407 | ||
2408 | static void | |
2409 | build_target_command_list (struct bp_location *bl) | |
2410 | { | |
d3ce09f5 SS |
2411 | int null_command_or_parse_error = 0; |
2412 | int modified = bl->needs_update; | |
d3ce09f5 | 2413 | |
3cde5c42 PA |
2414 | /* Clear commands left over from a previous insert. */ |
2415 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2416 | |
41fac0cf | 2417 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2418 | return; |
2419 | ||
41fac0cf PA |
2420 | /* For now, limit to agent-style dprintf breakpoints. */ |
2421 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2422 | return; |
2423 | ||
e0d9a270 SM |
2424 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2425 | ||
7f32a4d5 PA |
2426 | /* For now, if we have any location at the same address that isn't a |
2427 | dprintf, don't install the target-side commands, as that would | |
2428 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2429 | control. */ |
e0d9a270 SM |
2430 | for (bp_location *loc : loc_range) |
2431 | if (is_breakpoint (loc->owner) | |
2432 | && loc->pspace->num == bl->pspace->num | |
2433 | && loc->owner->type != bp_dprintf) | |
2434 | return; | |
41fac0cf | 2435 | |
d3ce09f5 SS |
2436 | /* Do a first pass to check for locations with no assigned |
2437 | conditions or conditions that fail to parse to a valid agent expression | |
2438 | bytecode. If any of these happen, then it's no use to send conditions | |
2439 | to the target since this location will always trigger and generate a | |
2440 | response back to GDB. */ | |
e0d9a270 | 2441 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2442 | { |
d3ce09f5 SS |
2443 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2444 | { | |
2445 | if (modified) | |
2446 | { | |
d3ce09f5 SS |
2447 | /* Re-parse the commands since something changed. In that |
2448 | case we already freed the command bytecodes (see | |
2449 | force_breakpoint_reinsertion). We just | |
2450 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2451 | loc->cmd_bytecode |
2452 | = parse_cmd_to_aexpr (bl->address, | |
2453 | loc->owner->extra_string); | |
d3ce09f5 SS |
2454 | } |
2455 | ||
2456 | /* If we have a NULL bytecode expression, it means something | |
2457 | went wrong or we have a null command expression. */ | |
2458 | if (!loc->cmd_bytecode) | |
2459 | { | |
2460 | null_command_or_parse_error = 1; | |
2461 | break; | |
2462 | } | |
2463 | } | |
2464 | } | |
2465 | ||
2466 | /* If anything failed, then we're not doing target-side commands, | |
2467 | and so clean up. */ | |
2468 | if (null_command_or_parse_error) | |
2469 | { | |
e0d9a270 SM |
2470 | for (bp_location *loc : loc_range) |
2471 | if (is_breakpoint (loc->owner) | |
2472 | && loc->pspace->num == bl->pspace->num) | |
2473 | { | |
2474 | /* Only go as far as the first NULL bytecode is | |
2475 | located. */ | |
2476 | if (loc->cmd_bytecode == NULL) | |
2477 | return; | |
d3ce09f5 | 2478 | |
e0d9a270 SM |
2479 | loc->cmd_bytecode.reset (); |
2480 | } | |
d3ce09f5 SS |
2481 | } |
2482 | ||
7f32a4d5 PA |
2483 | /* No NULL commands or failed bytecode generation. Build a command |
2484 | list for all duplicate locations at this location's address. | |
2485 | Note that here we must care for whether the breakpoint location | |
2486 | types are considered duplicates, otherwise, say, if we have a | |
2487 | software and hardware location at the same address, the target | |
2488 | could end up running the commands twice. For the moment, we only | |
2489 | support targets-side commands with dprintf, but it doesn't hurt | |
2490 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2491 | for (bp_location *loc : loc_range) |
2492 | if (breakpoint_locations_match (bl, loc) | |
2493 | && loc->owner->extra_string | |
2494 | && is_breakpoint (loc->owner) | |
2495 | && loc->pspace->num == bl->pspace->num | |
2496 | && loc->owner->enable_state == bp_enabled | |
2497 | && loc->enabled | |
2498 | && !loc->disabled_by_cond) | |
2499 | { | |
2500 | /* Add the command to the vector. This will be used later | |
2501 | to send the commands to the target. */ | |
2502 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2503 | } | |
d3ce09f5 SS |
2504 | |
2505 | bl->target_info.persist = 0; | |
2506 | /* Maybe flag this location as persistent. */ | |
2507 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2508 | bl->target_info.persist = 1; | |
2509 | } | |
2510 | ||
833b7ab5 YQ |
2511 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2512 | of breakpoint according to ADDR except single-step breakpoint. | |
2513 | Get the kind of single-step breakpoint according to the current | |
2514 | registers state. */ | |
cd6c3b4f YQ |
2515 | |
2516 | static int | |
2517 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2518 | { | |
833b7ab5 YQ |
2519 | if (bl->owner->type == bp_single_step) |
2520 | { | |
2521 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2522 | struct regcache *regcache; | |
2523 | ||
00431a78 | 2524 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2525 | |
2526 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2527 | regcache, addr); | |
2528 | } | |
2529 | else | |
2530 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2531 | } |
2532 | ||
35df4500 TJB |
2533 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2534 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2535 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2536 | Returns 0 for success, 1 if the bp_location type is not supported or |
2537 | -1 for failure. | |
879bfdc2 | 2538 | |
4a64f543 MS |
2539 | NOTE drow/2003-09-09: This routine could be broken down to an |
2540 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2541 | static int |
35df4500 | 2542 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2543 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2544 | int *disabled_breaks, |
dd61ec5c MW |
2545 | int *hw_breakpoint_error, |
2546 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2547 | { |
cc06b668 | 2548 | gdb_exception bp_excpt; |
879bfdc2 | 2549 | |
b775012e | 2550 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2551 | return 0; |
2552 | ||
35c63cd8 JB |
2553 | /* Note we don't initialize bl->target_info, as that wipes out |
2554 | the breakpoint location's shadow_contents if the breakpoint | |
2555 | is still inserted at that location. This in turn breaks | |
2556 | target_read_memory which depends on these buffers when | |
2557 | a memory read is requested at the breakpoint location: | |
2558 | Once the target_info has been wiped, we fail to see that | |
2559 | we have a breakpoint inserted at that address and thus | |
2560 | read the breakpoint instead of returning the data saved in | |
2561 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2562 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2563 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2564 | bl->target_info.length = bl->length; |
8181d85f | 2565 | |
b775012e LM |
2566 | /* When working with target-side conditions, we must pass all the conditions |
2567 | for the same breakpoint address down to the target since GDB will not | |
2568 | insert those locations. With a list of breakpoint conditions, the target | |
2569 | can decide when to stop and notify GDB. */ | |
2570 | ||
2571 | if (is_breakpoint (bl->owner)) | |
2572 | { | |
2573 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2574 | build_target_command_list (bl); |
2575 | /* Reset the modification marker. */ | |
b775012e LM |
2576 | bl->needs_update = 0; |
2577 | } | |
2578 | ||
7f32a4d5 PA |
2579 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2580 | set at a read-only address, then a breakpoint location will have | |
2581 | been changed to hardware breakpoint before we get here. If it is | |
2582 | "off" however, error out before actually trying to insert the | |
2583 | breakpoint, with a nicer error message. */ | |
35df4500 | 2584 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2585 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2586 | { |
7f32a4d5 | 2587 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2588 | |
7f32a4d5 PA |
2589 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2590 | { | |
2591 | fprintf_unfiltered (tmp_error_stream, | |
2592 | _("Cannot insert breakpoint %d.\n" | |
2593 | "Cannot set software breakpoint " | |
2594 | "at read-only address %s\n"), | |
2595 | bl->owner->number, | |
2596 | paddress (bl->gdbarch, bl->address)); | |
2597 | return 1; | |
765dc015 | 2598 | } |
7f32a4d5 PA |
2599 | } |
2600 | ||
2601 | if (bl->loc_type == bp_loc_software_breakpoint | |
2602 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2603 | { | |
879bfdc2 DJ |
2604 | /* First check to see if we have to handle an overlay. */ |
2605 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2606 | || bl->section == NULL |
2607 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2608 | { |
2609 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2610 | try |
dd61ec5c | 2611 | { |
0000e5cc PA |
2612 | int val; |
2613 | ||
dd61ec5c | 2614 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2615 | if (val) |
688fca4f | 2616 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2617 | } |
94aeb44b | 2618 | catch (gdb_exception &e) |
dd61ec5c | 2619 | { |
94aeb44b | 2620 | bp_excpt = std::move (e); |
dd61ec5c | 2621 | } |
879bfdc2 DJ |
2622 | } |
2623 | else | |
2624 | { | |
4a64f543 | 2625 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2626 | Shall we set a breakpoint at the LMA? */ |
2627 | if (!overlay_events_enabled) | |
2628 | { | |
2629 | /* Yes -- overlay event support is not active, | |
2630 | so we must try to set a breakpoint at the LMA. | |
2631 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2632 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2633 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2634 | bl->owner->number); |
879bfdc2 DJ |
2635 | else |
2636 | { | |
35df4500 TJB |
2637 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2638 | bl->section); | |
879bfdc2 | 2639 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2640 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2641 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2642 | |
2643 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2644 | try |
0000e5cc PA |
2645 | { |
2646 | int val; | |
2647 | ||
579c6ad9 | 2648 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2649 | = breakpoint_kind (bl, &addr); |
2650 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2651 | val = target_insert_breakpoint (bl->gdbarch, |
2652 | &bl->overlay_target_info); | |
2653 | if (val) | |
688fca4f PA |
2654 | bp_excpt |
2655 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2656 | } |
94aeb44b | 2657 | catch (gdb_exception &e) |
0000e5cc | 2658 | { |
94aeb44b | 2659 | bp_excpt = std::move (e); |
0000e5cc PA |
2660 | } |
2661 | ||
688fca4f | 2662 | if (bp_excpt.reason != 0) |
99361f52 | 2663 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2664 | "Overlay breakpoint %d " |
2665 | "failed: in ROM?\n", | |
35df4500 | 2666 | bl->owner->number); |
879bfdc2 DJ |
2667 | } |
2668 | } | |
2669 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2670 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2671 | { |
2672 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2673 | try |
dda83cd7 | 2674 | { |
0000e5cc PA |
2675 | int val; |
2676 | ||
dda83cd7 | 2677 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2678 | if (val) |
688fca4f | 2679 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2680 | } |
94aeb44b | 2681 | catch (gdb_exception &e) |
dda83cd7 | 2682 | { |
94aeb44b | 2683 | bp_excpt = std::move (e); |
dda83cd7 | 2684 | } |
879bfdc2 DJ |
2685 | } |
2686 | else | |
2687 | { | |
2688 | /* No. This breakpoint will not be inserted. | |
2689 | No error, but do not mark the bp as 'inserted'. */ | |
2690 | return 0; | |
2691 | } | |
2692 | } | |
2693 | ||
688fca4f | 2694 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2695 | { |
2696 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2697 | |
2698 | /* In some cases, we might not be able to insert a | |
2699 | breakpoint in a shared library that has already been | |
2700 | removed, but we have not yet processed the shlib unload | |
2701 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2702 | breakpoint insertion themselves can't tell why the |
2703 | breakpoint insertion failed (e.g., the remote target | |
2704 | doesn't define error codes), so we must treat generic | |
2705 | errors as memory errors. */ | |
688fca4f PA |
2706 | if (bp_excpt.reason == RETURN_ERROR |
2707 | && (bp_excpt.error == GENERIC_ERROR | |
2708 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2709 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2710 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2711 | || shared_objfile_contains_address_p (bl->pspace, |
2712 | bl->address))) | |
879bfdc2 | 2713 | { |
4a64f543 | 2714 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2715 | bl->shlib_disabled = 1; |
76727919 | 2716 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2717 | if (!*disabled_breaks) |
2718 | { | |
2719 | fprintf_unfiltered (tmp_error_stream, | |
2720 | "Cannot insert breakpoint %d.\n", | |
2721 | bl->owner->number); | |
2722 | fprintf_unfiltered (tmp_error_stream, | |
2723 | "Temporarily disabling shared " | |
2724 | "library breakpoints:\n"); | |
2725 | } | |
2726 | *disabled_breaks = 1; | |
879bfdc2 | 2727 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2728 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2729 | return 0; |
879bfdc2 DJ |
2730 | } |
2731 | else | |
879bfdc2 | 2732 | { |
35df4500 | 2733 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2734 | { |
0000e5cc | 2735 | *hw_breakpoint_error = 1; |
688fca4f | 2736 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dda83cd7 SM |
2737 | fprintf_unfiltered (tmp_error_stream, |
2738 | "Cannot insert hardware breakpoint %d%s", | |
2739 | bl->owner->number, | |
688fca4f | 2740 | bp_excpt.message ? ":" : ".\n"); |
dda83cd7 SM |
2741 | if (bp_excpt.message != NULL) |
2742 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2743 | bp_excpt.what ()); |
879bfdc2 DJ |
2744 | } |
2745 | else | |
2746 | { | |
688fca4f | 2747 | if (bp_excpt.message == NULL) |
0000e5cc | 2748 | { |
1ccbe998 | 2749 | std::string message |
0000e5cc PA |
2750 | = memory_error_message (TARGET_XFER_E_IO, |
2751 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2752 | |
2753 | fprintf_unfiltered (tmp_error_stream, | |
2754 | "Cannot insert breakpoint %d.\n" | |
2755 | "%s\n", | |
1ccbe998 | 2756 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2757 | } |
2758 | else | |
2759 | { | |
2760 | fprintf_unfiltered (tmp_error_stream, | |
2761 | "Cannot insert breakpoint %d: %s\n", | |
2762 | bl->owner->number, | |
3d6e9d23 | 2763 | bp_excpt.what ()); |
0000e5cc | 2764 | } |
879bfdc2 | 2765 | } |
0000e5cc | 2766 | return 1; |
879bfdc2 DJ |
2767 | |
2768 | } | |
2769 | } | |
2770 | else | |
35df4500 | 2771 | bl->inserted = 1; |
879bfdc2 | 2772 | |
0000e5cc | 2773 | return 0; |
879bfdc2 DJ |
2774 | } |
2775 | ||
35df4500 | 2776 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2777 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2778 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2779 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2780 | { |
0000e5cc PA |
2781 | int val; |
2782 | ||
77b06cd7 TJB |
2783 | gdb_assert (bl->owner->ops != NULL |
2784 | && bl->owner->ops->insert_location != NULL); | |
2785 | ||
2786 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2787 | |
2788 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2789 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2790 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2791 | { |
85d721b8 PA |
2792 | /* But don't try to insert it, if there's already another |
2793 | hw_access location that would be considered a duplicate | |
2794 | of this one. */ | |
48d7020b | 2795 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2796 | if (loc != bl |
85d721b8 | 2797 | && loc->watchpoint_type == hw_access |
35df4500 | 2798 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2799 | { |
35df4500 TJB |
2800 | bl->duplicate = 1; |
2801 | bl->inserted = 1; | |
2802 | bl->target_info = loc->target_info; | |
2803 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2804 | val = 0; |
2805 | break; | |
2806 | } | |
2807 | ||
2808 | if (val == 1) | |
2809 | { | |
77b06cd7 TJB |
2810 | bl->watchpoint_type = hw_access; |
2811 | val = bl->owner->ops->insert_location (bl); | |
2812 | ||
2813 | if (val) | |
2814 | /* Back to the original value. */ | |
2815 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2816 | } |
2817 | } | |
2818 | ||
35df4500 | 2819 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2820 | } |
2821 | ||
35df4500 | 2822 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2823 | { |
0000e5cc PA |
2824 | int val; |
2825 | ||
77b06cd7 TJB |
2826 | gdb_assert (bl->owner->ops != NULL |
2827 | && bl->owner->ops->insert_location != NULL); | |
2828 | ||
2829 | val = bl->owner->ops->insert_location (bl); | |
2830 | if (val) | |
2831 | { | |
2832 | bl->owner->enable_state = bp_disabled; | |
2833 | ||
2834 | if (val == 1) | |
2835 | warning (_("\ | |
2836 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2837 | of catchpoint."), bl->owner->number); | |
2838 | else | |
2839 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2840 | } | |
2841 | ||
2842 | bl->inserted = (val == 0); | |
1640b821 DJ |
2843 | |
2844 | /* We've already printed an error message if there was a problem | |
2845 | inserting this catchpoint, and we've disabled the catchpoint, | |
2846 | so just return success. */ | |
2847 | return 0; | |
879bfdc2 DJ |
2848 | } |
2849 | ||
2850 | return 0; | |
2851 | } | |
2852 | ||
6c95b8df PA |
2853 | /* This function is called when program space PSPACE is about to be |
2854 | deleted. It takes care of updating breakpoints to not reference | |
2855 | PSPACE anymore. */ | |
2856 | ||
2857 | void | |
2858 | breakpoint_program_space_exit (struct program_space *pspace) | |
2859 | { | |
6c95b8df | 2860 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
2861 | for (breakpoint *b : all_breakpoints_safe ()) |
2862 | if (b->pspace == pspace) | |
2863 | delete_breakpoint (b); | |
6c95b8df PA |
2864 | |
2865 | /* Breakpoints set through other program spaces could have locations | |
2866 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 2867 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
2868 | { |
2869 | struct bp_location *tmp; | |
2870 | ||
2871 | if (loc->pspace == pspace) | |
2872 | { | |
2bdf28a0 | 2873 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2874 | if (loc->owner->loc == loc) |
2875 | loc->owner->loc = loc->next; | |
2876 | else | |
2877 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2878 | if (tmp->next == loc) | |
2879 | { | |
2880 | tmp->next = loc->next; | |
2881 | break; | |
2882 | } | |
2883 | } | |
2884 | } | |
2885 | ||
2886 | /* Now update the global location list to permanently delete the | |
2887 | removed locations above. */ | |
44702360 | 2888 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2889 | } |
2890 | ||
74960c60 VP |
2891 | /* Make sure all breakpoints are inserted in inferior. |
2892 | Throws exception on any error. | |
2893 | A breakpoint that is already inserted won't be inserted | |
2894 | again, so calling this function twice is safe. */ | |
2895 | void | |
2896 | insert_breakpoints (void) | |
2897 | { | |
43892fdf | 2898 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 2899 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
2900 | { |
2901 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2902 | ||
2903 | update_watchpoint (w, 0 /* don't reparse. */); | |
2904 | } | |
74960c60 | 2905 | |
04086b45 PA |
2906 | /* Updating watchpoints creates new locations, so update the global |
2907 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
2908 | ignore breakpoints_always_inserted_mode. Also, |
2909 | update_global_location_list tries to "upgrade" software | |
2910 | breakpoints to hardware breakpoints to handle "set breakpoint | |
2911 | auto-hw", so we need to call it even if we don't have new | |
2912 | locations. */ | |
04086b45 | 2913 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
2914 | } |
2915 | ||
20388dd6 YQ |
2916 | /* Invoke CALLBACK for each of bp_location. */ |
2917 | ||
2918 | void | |
0406545d | 2919 | iterate_over_bp_locations (gdb::function_view<void (bp_location *)> callback) |
20388dd6 | 2920 | { |
48d7020b SM |
2921 | for (bp_location *loc : all_bp_locations ()) |
2922 | callback (loc); | |
20388dd6 YQ |
2923 | } |
2924 | ||
b775012e LM |
2925 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2926 | target. It is the case with deleting and disabling of breakpoints when using | |
2927 | always-inserted mode. */ | |
2928 | ||
2929 | static void | |
2930 | update_inserted_breakpoint_locations (void) | |
2931 | { | |
b775012e LM |
2932 | int error_flag = 0; |
2933 | int val = 0; | |
2934 | int disabled_breaks = 0; | |
2935 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2936 | int hw_bp_details_reported = 0; |
b775012e | 2937 | |
d7e74731 | 2938 | string_file tmp_error_stream; |
b775012e LM |
2939 | |
2940 | /* Explicitly mark the warning -- this will only be printed if | |
2941 | there was an error. */ | |
d7e74731 | 2942 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2943 | |
5ed8105e | 2944 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 2945 | |
48d7020b | 2946 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
2947 | { |
2948 | /* We only want to update software breakpoints and hardware | |
2949 | breakpoints. */ | |
2950 | if (!is_breakpoint (bl->owner)) | |
2951 | continue; | |
2952 | ||
2953 | /* We only want to update locations that are already inserted | |
2954 | and need updating. This is to avoid unwanted insertion during | |
2955 | deletion of breakpoints. */ | |
4daf1902 | 2956 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2957 | continue; |
2958 | ||
2959 | switch_to_program_space_and_thread (bl->pspace); | |
2960 | ||
2961 | /* For targets that support global breakpoints, there's no need | |
2962 | to select an inferior to insert breakpoint to. In fact, even | |
2963 | if we aren't attached to any process yet, we should still | |
2964 | insert breakpoints. */ | |
f5656ead | 2965 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 2966 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
2967 | continue; |
2968 | ||
d7e74731 | 2969 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2970 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2971 | if (val) |
2972 | error_flag = val; | |
2973 | } | |
2974 | ||
2975 | if (error_flag) | |
2976 | { | |
223ffa71 | 2977 | target_terminal::ours_for_output (); |
b775012e LM |
2978 | error_stream (tmp_error_stream); |
2979 | } | |
b775012e LM |
2980 | } |
2981 | ||
c30eee59 | 2982 | /* Used when starting or continuing the program. */ |
c906108c | 2983 | |
74960c60 VP |
2984 | static void |
2985 | insert_breakpoint_locations (void) | |
c906108c | 2986 | { |
eacd795a | 2987 | int error_flag = 0; |
c906108c | 2988 | int val = 0; |
3fbb6ffa | 2989 | int disabled_breaks = 0; |
81d0cc19 | 2990 | int hw_breakpoint_error = 0; |
dd61ec5c | 2991 | int hw_bp_error_explained_already = 0; |
c906108c | 2992 | |
d7e74731 PA |
2993 | string_file tmp_error_stream; |
2994 | ||
81d0cc19 GS |
2995 | /* Explicitly mark the warning -- this will only be printed if |
2996 | there was an error. */ | |
d7e74731 | 2997 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2998 | |
5ed8105e | 2999 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3000 | |
48d7020b | 3001 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3002 | { |
b775012e | 3003 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3004 | continue; |
3005 | ||
4a64f543 MS |
3006 | /* There is no point inserting thread-specific breakpoints if |
3007 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3008 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3009 | if (bl->owner->thread != -1 |
5d5658a1 | 3010 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3011 | continue; |
3012 | ||
35df4500 | 3013 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3014 | |
3015 | /* For targets that support global breakpoints, there's no need | |
3016 | to select an inferior to insert breakpoint to. In fact, even | |
3017 | if we aren't attached to any process yet, we should still | |
3018 | insert breakpoints. */ | |
f5656ead | 3019 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3020 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3021 | continue; |
3022 | ||
d7e74731 | 3023 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3024 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3025 | if (val) |
eacd795a | 3026 | error_flag = val; |
879bfdc2 | 3027 | } |
c906108c | 3028 | |
4a64f543 MS |
3029 | /* If we failed to insert all locations of a watchpoint, remove |
3030 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3031 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee VP |
3032 | { |
3033 | int some_failed = 0; | |
a5606eee VP |
3034 | |
3035 | if (!is_hardware_watchpoint (bpt)) | |
3036 | continue; | |
3037 | ||
d6b74ac4 | 3038 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3039 | continue; |
74960c60 VP |
3040 | |
3041 | if (bpt->disposition == disp_del_at_next_stop) | |
3042 | continue; | |
a5606eee | 3043 | |
40cb8ca5 | 3044 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3045 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3046 | { |
3047 | some_failed = 1; | |
3048 | break; | |
3049 | } | |
40cb8ca5 | 3050 | |
a5606eee VP |
3051 | if (some_failed) |
3052 | { | |
40cb8ca5 | 3053 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3054 | if (loc->inserted) |
834c0d03 | 3055 | remove_breakpoint (loc); |
a5606eee VP |
3056 | |
3057 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3058 | tmp_error_stream.printf ("Could not insert " |
3059 | "hardware watchpoint %d.\n", | |
3060 | bpt->number); | |
eacd795a | 3061 | error_flag = -1; |
a5606eee VP |
3062 | } |
3063 | } | |
3064 | ||
eacd795a | 3065 | if (error_flag) |
81d0cc19 GS |
3066 | { |
3067 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3068 | message about possibly exhausted resources. */ |
dd61ec5c | 3069 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3070 | { |
d7e74731 | 3071 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3072 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3073 | } |
223ffa71 | 3074 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3075 | error_stream (tmp_error_stream); |
3076 | } | |
c906108c SS |
3077 | } |
3078 | ||
c30eee59 TJB |
3079 | /* Used when the program stops. |
3080 | Returns zero if successful, or non-zero if there was a problem | |
3081 | removing a breakpoint location. */ | |
3082 | ||
c906108c | 3083 | int |
fba45db2 | 3084 | remove_breakpoints (void) |
c906108c | 3085 | { |
3a1bae8e | 3086 | int val = 0; |
c906108c | 3087 | |
48d7020b | 3088 | for (bp_location *bl : all_bp_locations ()) |
c5aa993b | 3089 | { |
1e4d1764 | 3090 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3091 | val |= remove_breakpoint (bl); |
c5aa993b | 3092 | } |
3a1bae8e | 3093 | return val; |
c906108c SS |
3094 | } |
3095 | ||
49fa26b0 PA |
3096 | /* When a thread exits, remove breakpoints that are related to |
3097 | that thread. */ | |
3098 | ||
3099 | static void | |
3100 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3101 | { | |
1428b37a | 3102 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3103 | { |
5d5658a1 | 3104 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3105 | { |
3106 | b->disposition = disp_del_at_next_stop; | |
3107 | ||
3108 | printf_filtered (_("\ | |
43792cf0 PA |
3109 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3110 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3111 | |
3112 | /* Hide it from the user. */ | |
3113 | b->number = 0; | |
3114 | } | |
3115 | } | |
3116 | } | |
3117 | ||
f3869b1a | 3118 | /* See breakpoint.h. */ |
6c95b8df | 3119 | |
f3869b1a | 3120 | void |
00431a78 | 3121 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3122 | { |
6c95b8df | 3123 | int val; |
6c95b8df | 3124 | |
48d7020b | 3125 | for (bp_location *bl : all_bp_locations ()) |
6c95b8df | 3126 | { |
35df4500 | 3127 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3128 | continue; |
3129 | ||
fc126975 | 3130 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3131 | { |
834c0d03 | 3132 | val = remove_breakpoint (bl); |
6c95b8df | 3133 | if (val != 0) |
f3869b1a | 3134 | return; |
6c95b8df PA |
3135 | } |
3136 | } | |
6c95b8df PA |
3137 | } |
3138 | ||
e58b0e63 PA |
3139 | static int internal_breakpoint_number = -1; |
3140 | ||
84f4c1fe PM |
3141 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3142 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3143 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3144 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3145 | breakpoint_count and that value incremented. Internal breakpoints |
3146 | do not set the internal var bpnum. */ | |
3147 | static void | |
3148 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3149 | { | |
3150 | if (internal) | |
3151 | b->number = internal_breakpoint_number--; | |
3152 | else | |
3153 | { | |
3154 | set_breakpoint_count (breakpoint_count + 1); | |
3155 | b->number = breakpoint_count; | |
3156 | } | |
3157 | } | |
3158 | ||
e62c965a | 3159 | static struct breakpoint * |
a6d9a66e | 3160 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3161 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3162 | const struct breakpoint_ops *ops) |
e62c965a | 3163 | { |
51abb421 | 3164 | symtab_and_line sal; |
e62c965a PP |
3165 | sal.pc = address; |
3166 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3167 | sal.pspace = current_program_space; |
e62c965a | 3168 | |
51abb421 | 3169 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3170 | b->number = internal_breakpoint_number--; |
3171 | b->disposition = disp_donttouch; | |
3172 | ||
3173 | return b; | |
3174 | } | |
3175 | ||
17450429 PP |
3176 | static const char *const longjmp_names[] = |
3177 | { | |
3178 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3179 | }; | |
3180 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3181 | ||
3182 | /* Per-objfile data private to breakpoint.c. */ | |
3183 | struct breakpoint_objfile_data | |
3184 | { | |
3185 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3186 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3187 | |
3188 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3189 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3190 | |
28106bc2 | 3191 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3192 | int longjmp_searched = 0; |
28106bc2 | 3193 | |
45461e0d SM |
3194 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3195 | references. */ | |
3196 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3197 | |
17450429 | 3198 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3199 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3200 | |
3201 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3202 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3203 | |
3204 | /* True if we have looked for exception probes. */ | |
43dce439 | 3205 | int exception_searched = 0; |
28106bc2 | 3206 | |
45461e0d SM |
3207 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3208 | references. */ | |
3209 | std::vector<probe *> exception_probes; | |
17450429 PP |
3210 | }; |
3211 | ||
51d3063a TT |
3212 | static const struct objfile_key<breakpoint_objfile_data> |
3213 | breakpoint_objfile_key; | |
17450429 PP |
3214 | |
3215 | /* Minimal symbol not found sentinel. */ | |
3216 | static struct minimal_symbol msym_not_found; | |
3217 | ||
3218 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3219 | ||
3220 | static int | |
3221 | msym_not_found_p (const struct minimal_symbol *msym) | |
3222 | { | |
3223 | return msym == &msym_not_found; | |
3224 | } | |
3225 | ||
3226 | /* Return per-objfile data needed by breakpoint.c. | |
3227 | Allocate the data if necessary. */ | |
3228 | ||
3229 | static struct breakpoint_objfile_data * | |
3230 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3231 | { | |
3232 | struct breakpoint_objfile_data *bp_objfile_data; | |
3233 | ||
51d3063a | 3234 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3235 | if (bp_objfile_data == NULL) |
51d3063a | 3236 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3237 | return bp_objfile_data; |
3238 | } | |
3239 | ||
e62c965a | 3240 | static void |
af02033e | 3241 | create_overlay_event_breakpoint (void) |
e62c965a | 3242 | { |
af02033e | 3243 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3244 | |
2030c079 | 3245 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3246 | { |
3247 | struct breakpoint *b; | |
17450429 PP |
3248 | struct breakpoint_objfile_data *bp_objfile_data; |
3249 | CORE_ADDR addr; | |
67994074 | 3250 | struct explicit_location explicit_loc; |
69de3c6a | 3251 | |
17450429 PP |
3252 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3253 | ||
3b7344d5 | 3254 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3255 | continue; |
3256 | ||
3b7344d5 | 3257 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3258 | { |
3b7344d5 | 3259 | struct bound_minimal_symbol m; |
17450429 PP |
3260 | |
3261 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3262 | if (m.minsym == NULL) |
17450429 PP |
3263 | { |
3264 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3265 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3266 | continue; |
3267 | } | |
3268 | bp_objfile_data->overlay_msym = m; | |
3269 | } | |
e62c965a | 3270 | |
77e371c0 | 3271 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
08feed99 | 3272 | b = create_internal_breakpoint (objfile->arch (), addr, |
dda83cd7 | 3273 | bp_overlay_event, |
06edf0c0 | 3274 | &internal_breakpoint_ops); |
67994074 KS |
3275 | initialize_explicit_location (&explicit_loc); |
3276 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3277 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3278 | |
69de3c6a | 3279 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3280 | { |
3281 | b->enable_state = bp_enabled; | |
3282 | overlay_events_enabled = 1; | |
3283 | } | |
69de3c6a PP |
3284 | else |
3285 | { | |
dda83cd7 SM |
3286 | b->enable_state = bp_disabled; |
3287 | overlay_events_enabled = 0; | |
69de3c6a | 3288 | } |
e62c965a | 3289 | } |
e62c965a PP |
3290 | } |
3291 | ||
2a7f6487 TV |
3292 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3293 | true if a breakpoint was installed. */ | |
3294 | ||
3295 | static bool | |
3296 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3297 | { |
2a7f6487 TV |
3298 | struct gdbarch *gdbarch = objfile->arch (); |
3299 | struct breakpoint_objfile_data *bp_objfile_data | |
3300 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3301 | |
2a7f6487 | 3302 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3303 | { |
2a7f6487 TV |
3304 | std::vector<probe *> ret |
3305 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3306 | |
2a7f6487 | 3307 | if (!ret.empty ()) |
94c93c35 | 3308 | { |
2a7f6487 TV |
3309 | /* We are only interested in checking one element. */ |
3310 | probe *p = ret[0]; | |
0fd8e87f | 3311 | |
2a7f6487 TV |
3312 | if (!p->can_evaluate_arguments ()) |
3313 | { | |
3314 | /* We cannot use the probe interface here, | |
3315 | because it does not know how to evaluate | |
3316 | arguments. */ | |
3317 | ret.clear (); | |
3318 | } | |
3319 | } | |
3320 | bp_objfile_data->longjmp_probes = ret; | |
3321 | bp_objfile_data->longjmp_searched = 1; | |
3322 | } | |
0fd8e87f | 3323 | |
2a7f6487 TV |
3324 | if (bp_objfile_data->longjmp_probes.empty ()) |
3325 | return false; | |
17450429 | 3326 | |
2a7f6487 TV |
3327 | for (probe *p : bp_objfile_data->longjmp_probes) |
3328 | { | |
3329 | struct breakpoint *b; | |
25f9533e | 3330 | |
2a7f6487 TV |
3331 | b = create_internal_breakpoint (gdbarch, |
3332 | p->get_relocated_address (objfile), | |
3333 | bp_longjmp_master, | |
3334 | &internal_breakpoint_ops); | |
3335 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3336 | b->enable_state = bp_disabled; | |
3337 | } | |
aed57c53 | 3338 | |
2a7f6487 TV |
3339 | return true; |
3340 | } | |
25f9533e | 3341 | |
2a7f6487 TV |
3342 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3343 | Return true if at least one breakpoint was installed. */ | |
3344 | ||
3345 | static bool | |
3346 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3347 | { | |
3348 | struct gdbarch *gdbarch = objfile->arch (); | |
3349 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3350 | return false; | |
3351 | ||
3352 | struct breakpoint_objfile_data *bp_objfile_data | |
3353 | = get_breakpoint_objfile_data (objfile); | |
3354 | unsigned int installed_bp = 0; | |
3355 | ||
3356 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3357 | { | |
3358 | struct breakpoint *b; | |
3359 | const char *func_name; | |
3360 | CORE_ADDR addr; | |
3361 | struct explicit_location explicit_loc; | |
3362 | ||
3363 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3364 | continue; | |
28106bc2 | 3365 | |
2a7f6487 TV |
3366 | func_name = longjmp_names[i]; |
3367 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3368 | { | |
3369 | struct bound_minimal_symbol m; | |
3370 | ||
3371 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3372 | if (m.minsym == NULL) | |
3373 | { | |
3374 | /* Prevent future lookups in this objfile. */ | |
3375 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3376 | continue; |
3377 | } | |
2a7f6487 TV |
3378 | bp_objfile_data->longjmp_msym[i] = m; |
3379 | } | |
28106bc2 | 3380 | |
2a7f6487 TV |
3381 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3382 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3383 | &internal_breakpoint_ops); | |
3384 | initialize_explicit_location (&explicit_loc); | |
3385 | explicit_loc.function_name = ASTRDUP (func_name); | |
3386 | b->location = new_explicit_location (&explicit_loc); | |
3387 | b->enable_state = bp_disabled; | |
3388 | installed_bp++; | |
3389 | } | |
28106bc2 | 3390 | |
2a7f6487 TV |
3391 | return installed_bp > 0; |
3392 | } | |
0fd8e87f | 3393 | |
2a7f6487 | 3394 | /* Create a master longjmp breakpoint. */ |
17450429 | 3395 | |
2a7f6487 TV |
3396 | static void |
3397 | create_longjmp_master_breakpoint (void) | |
3398 | { | |
3399 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3400 | |
2a7f6487 TV |
3401 | for (struct program_space *pspace : program_spaces) |
3402 | { | |
3403 | set_current_program_space (pspace); | |
17450429 | 3404 | |
2a7f6487 TV |
3405 | for (objfile *obj : current_program_space->objfiles ()) |
3406 | { | |
3407 | /* Skip separate debug object, it's handled in the loop below. */ | |
3408 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3409 | continue; | |
3410 | ||
3411 | /* Try a probe kind breakpoint on main objfile. */ | |
3412 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3413 | continue; | |
3414 | ||
3415 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3416 | objfiles. */ | |
3417 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3418 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3419 | break; | |
94c93c35 TT |
3420 | } |
3421 | } | |
0fd8e87f UW |
3422 | } |
3423 | ||
af02033e | 3424 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3425 | static void |
af02033e | 3426 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3427 | { |
af02033e | 3428 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3429 | |
5ed8105e | 3430 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3431 | |
94c93c35 TT |
3432 | for (struct program_space *pspace : program_spaces) |
3433 | { | |
3434 | CORE_ADDR addr; | |
17450429 | 3435 | |
94c93c35 | 3436 | set_current_program_space (pspace); |
17450429 | 3437 | |
94c93c35 TT |
3438 | for (objfile *objfile : current_program_space->objfiles ()) |
3439 | { | |
3440 | struct breakpoint *b; | |
3441 | struct breakpoint_objfile_data *bp_objfile_data; | |
3442 | struct explicit_location explicit_loc; | |
aa7d318d | 3443 | |
94c93c35 | 3444 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3445 | |
94c93c35 TT |
3446 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3447 | continue; | |
17450429 | 3448 | |
94c93c35 TT |
3449 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3450 | { | |
3451 | struct bound_minimal_symbol m; | |
17450429 | 3452 | |
94c93c35 TT |
3453 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3454 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3455 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3456 | { | |
3457 | /* Prevent future lookups in this objfile. */ | |
3458 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3459 | continue; | |
3460 | } | |
3461 | bp_objfile_data->terminate_msym = m; | |
3462 | } | |
aa7d318d | 3463 | |
94c93c35 TT |
3464 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3465 | b = create_internal_breakpoint (objfile->arch (), addr, | |
3466 | bp_std_terminate_master, | |
3467 | &internal_breakpoint_ops); | |
3468 | initialize_explicit_location (&explicit_loc); | |
3469 | explicit_loc.function_name = ASTRDUP (func_name); | |
3470 | b->location = new_explicit_location (&explicit_loc); | |
3471 | b->enable_state = bp_disabled; | |
3472 | } | |
3473 | } | |
aa7d318d TT |
3474 | } |
3475 | ||
1940319c TV |
3476 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3477 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3478 | |
1940319c TV |
3479 | static bool |
3480 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3481 | { |
1940319c TV |
3482 | struct breakpoint *b; |
3483 | struct gdbarch *gdbarch; | |
3484 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3485 | |
1940319c | 3486 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3487 | |
1940319c TV |
3488 | /* We prefer the SystemTap probe point if it exists. */ |
3489 | if (!bp_objfile_data->exception_searched) | |
3490 | { | |
3491 | std::vector<probe *> ret | |
3492 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3493 | |
1940319c | 3494 | if (!ret.empty ()) |
28106bc2 | 3495 | { |
1940319c TV |
3496 | /* We are only interested in checking one element. */ |
3497 | probe *p = ret[0]; | |
25f9533e | 3498 | |
1940319c | 3499 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3500 | { |
1940319c TV |
3501 | /* We cannot use the probe interface here, because it does |
3502 | not know how to evaluate arguments. */ | |
3503 | ret.clear (); | |
25f9533e | 3504 | } |
28106bc2 | 3505 | } |
1940319c TV |
3506 | bp_objfile_data->exception_probes = ret; |
3507 | bp_objfile_data->exception_searched = 1; | |
3508 | } | |
28106bc2 | 3509 | |
1940319c TV |
3510 | if (bp_objfile_data->exception_probes.empty ()) |
3511 | return false; | |
45461e0d | 3512 | |
1940319c | 3513 | gdbarch = objfile->arch (); |
28106bc2 | 3514 | |
1940319c TV |
3515 | for (probe *p : bp_objfile_data->exception_probes) |
3516 | { | |
3517 | b = create_internal_breakpoint (gdbarch, | |
3518 | p->get_relocated_address (objfile), | |
3519 | bp_exception_master, | |
3520 | &internal_breakpoint_ops); | |
3521 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); | |
3522 | b->enable_state = bp_disabled; | |
3523 | } | |
28106bc2 | 3524 | |
1940319c TV |
3525 | return true; |
3526 | } | |
28106bc2 | 3527 | |
1940319c TV |
3528 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3529 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3530 | |
1940319c TV |
3531 | static bool |
3532 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3533 | { | |
3534 | const char *const func_name = "_Unwind_DebugHook"; | |
3535 | struct breakpoint *b; | |
3536 | struct gdbarch *gdbarch; | |
3537 | struct breakpoint_objfile_data *bp_objfile_data; | |
3538 | CORE_ADDR addr; | |
3539 | struct explicit_location explicit_loc; | |
186c406b | 3540 | |
1940319c | 3541 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3542 | |
1940319c TV |
3543 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3544 | return false; | |
17450429 | 3545 | |
1940319c TV |
3546 | gdbarch = objfile->arch (); |
3547 | ||
3548 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3549 | { | |
3550 | struct bound_minimal_symbol debug_hook; | |
3551 | ||
3552 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3553 | if (debug_hook.minsym == NULL) | |
3554 | { | |
3555 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3556 | return false; | |
186c406b | 3557 | } |
17450429 | 3558 | |
1940319c TV |
3559 | bp_objfile_data->exception_msym = debug_hook; |
3560 | } | |
3561 | ||
3562 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
328d42d8 SM |
3563 | addr = gdbarch_convert_from_func_ptr_addr |
3564 | (gdbarch, addr, current_inferior ()->top_target ()); | |
1940319c TV |
3565 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3566 | &internal_breakpoint_ops); | |
3567 | initialize_explicit_location (&explicit_loc); | |
3568 | explicit_loc.function_name = ASTRDUP (func_name); | |
3569 | b->location = new_explicit_location (&explicit_loc); | |
3570 | b->enable_state = bp_disabled; | |
3571 | ||
3572 | return true; | |
3573 | } | |
3574 | ||
3575 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3576 | ||
3577 | static void | |
3578 | create_exception_master_breakpoint (void) | |
3579 | { | |
3580 | for (objfile *obj : current_program_space->objfiles ()) | |
3581 | { | |
3582 | /* Skip separate debug object. */ | |
3583 | if (obj->separate_debug_objfile_backlink) | |
3584 | continue; | |
3585 | ||
3586 | /* Try a probe kind breakpoint. */ | |
3587 | if (create_exception_master_breakpoint_probe (obj)) | |
3588 | continue; | |
3589 | ||
7c6944ab TV |
3590 | /* Iterate over main and separate debug objects and try an |
3591 | _Unwind_DebugHook kind breakpoint. */ | |
3592 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3593 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3594 | break; |
186c406b | 3595 | } |
186c406b TT |
3596 | } |
3597 | ||
9ef9e6a6 KS |
3598 | /* Does B have a location spec? */ |
3599 | ||
3600 | static int | |
3601 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3602 | { | |
d28cd78a | 3603 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3604 | } |
3605 | ||
c906108c | 3606 | void |
fba45db2 | 3607 | update_breakpoints_after_exec (void) |
c906108c | 3608 | { |
25b22b0a PA |
3609 | /* We're about to delete breakpoints from GDB's lists. If the |
3610 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3611 | writing the breakpoints' "shadow contents" back into memory. The | |
3612 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3613 | do that. Instead, the target is responsible from marking | |
3614 | breakpoints out as soon as it detects an exec. We don't do that | |
3615 | here instead, because there may be other attempts to delete | |
3616 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3617 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3618 | if (bploc->pspace == current_program_space) |
3619 | gdb_assert (!bploc->inserted); | |
c906108c | 3620 | |
1428b37a | 3621 | for (breakpoint *b : all_breakpoints_safe ()) |
c5aa993b | 3622 | { |
6c95b8df PA |
3623 | if (b->pspace != current_program_space) |
3624 | continue; | |
3625 | ||
4a64f543 | 3626 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3627 | if (b->type == bp_shlib_event) |
3628 | { | |
3629 | delete_breakpoint (b); | |
3630 | continue; | |
3631 | } | |
c906108c | 3632 | |
4a64f543 | 3633 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3634 | if (b->type == bp_jit_event) |
3635 | { | |
3636 | delete_breakpoint (b); | |
3637 | continue; | |
3638 | } | |
3639 | ||
1900040c | 3640 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3641 | as must overlay event and longjmp master breakpoints. */ |
3642 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3643 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3644 | || b->type == bp_exception_master) | |
c4093a6a JM |
3645 | { |
3646 | delete_breakpoint (b); | |
3647 | continue; | |
3648 | } | |
3649 | ||
4a64f543 | 3650 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3651 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3652 | { |
3653 | delete_breakpoint (b); | |
3654 | continue; | |
3655 | } | |
3656 | ||
7c16b83e PA |
3657 | /* Just like single-step breakpoints. */ |
3658 | if (b->type == bp_single_step) | |
3659 | { | |
3660 | delete_breakpoint (b); | |
3661 | continue; | |
3662 | } | |
3663 | ||
611c83ae PA |
3664 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3665 | after an exec. */ | |
186c406b | 3666 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3667 | || b->type == bp_longjmp_call_dummy |
186c406b | 3668 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3669 | { |
3670 | delete_breakpoint (b); | |
3671 | continue; | |
3672 | } | |
3673 | ||
ce78b96d JB |
3674 | if (b->type == bp_catchpoint) |
3675 | { | |
dda83cd7 SM |
3676 | /* For now, none of the bp_catchpoint breakpoints need to |
3677 | do anything at this point. In the future, if some of | |
3678 | the catchpoints need to something, we will need to add | |
3679 | a new method, and call this method from here. */ | |
3680 | continue; | |
ce78b96d JB |
3681 | } |
3682 | ||
c5aa993b JM |
3683 | /* bp_finish is a special case. The only way we ought to be able |
3684 | to see one of these when an exec() has happened, is if the user | |
3685 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3686 | carries them to the call-site of the current callee, by setting | |
3687 | a temporary bp there and resuming. But in this case, the finish | |
3688 | will carry them entirely through the vfork & exec. | |
3689 | ||
3690 | We don't want to allow a bp_finish to remain inserted now. But | |
3691 | we can't safely delete it, 'cause finish_command has a handle to | |
3692 | the bp on a bpstat, and will later want to delete it. There's a | |
3693 | chance (and I've seen it happen) that if we delete the bp_finish | |
3694 | here, that its storage will get reused by the time finish_command | |
3695 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3696 | We really must allow finish_command to delete a bp_finish. | |
3697 | ||
e5dd4106 | 3698 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3699 | it's safe to delete something others may have handles to?" |
3700 | problem, what we'll do here is just uninsert the bp_finish, and | |
3701 | let finish_command delete it. | |
3702 | ||
3703 | (We know the bp_finish is "doomed" in the sense that it's | |
3704 | momentary, and will be deleted as soon as finish_command sees | |
3705 | the inferior stopped. So it doesn't matter that the bp's | |
3706 | address is probably bogus in the new a.out, unlike e.g., the | |
3707 | solib breakpoints.) */ | |
c5aa993b | 3708 | |
c5aa993b JM |
3709 | if (b->type == bp_finish) |
3710 | { | |
3711 | continue; | |
3712 | } | |
3713 | ||
3714 | /* Without a symbolic address, we have little hope of the | |
3715 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3716 | a.out. */ |
9ef9e6a6 | 3717 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3718 | { |
3719 | delete_breakpoint (b); | |
3720 | continue; | |
3721 | } | |
c5aa993b | 3722 | } |
c906108c SS |
3723 | } |
3724 | ||
3725 | int | |
d80ee84f | 3726 | detach_breakpoints (ptid_t ptid) |
c906108c | 3727 | { |
3a1bae8e | 3728 | int val = 0; |
2989a365 | 3729 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3730 | struct inferior *inf = current_inferior (); |
c5aa993b | 3731 | |
e99b03dc | 3732 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3733 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3734 | |
6c95b8df | 3735 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3736 | inferior_ptid = ptid; |
48d7020b | 3737 | for (bp_location *bl : all_bp_locations ()) |
c5aa993b | 3738 | { |
35df4500 | 3739 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3740 | continue; |
3741 | ||
bd9673a4 PW |
3742 | /* This function must physically remove breakpoints locations |
3743 | from the specified ptid, without modifying the breakpoint | |
3744 | package's state. Locations of type bp_loc_other are only | |
3745 | maintained at GDB side. So, there is no need to remove | |
3746 | these bp_loc_other locations. Moreover, removing these | |
3747 | would modify the breakpoint package's state. */ | |
3748 | if (bl->loc_type == bp_loc_other) | |
3749 | continue; | |
3750 | ||
35df4500 | 3751 | if (bl->inserted) |
b2b6a7da | 3752 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3753 | } |
d03285ec | 3754 | |
3a1bae8e | 3755 | return val; |
c906108c SS |
3756 | } |
3757 | ||
35df4500 | 3758 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3759 | Note that this is used to detach breakpoints from a child fork. |
3760 | When we get here, the child isn't in the inferior list, and neither | |
3761 | do we have objects to represent its address space --- we should | |
35df4500 | 3762 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3763 | |
c906108c | 3764 | static int |
b2b6a7da | 3765 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3766 | { |
3767 | int val; | |
c5aa993b | 3768 | |
35df4500 TJB |
3769 | /* BL is never in moribund_locations by our callers. */ |
3770 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3771 | |
74960c60 VP |
3772 | /* The type of none suggests that owner is actually deleted. |
3773 | This should not ever happen. */ | |
35df4500 | 3774 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3775 | |
35df4500 TJB |
3776 | if (bl->loc_type == bp_loc_software_breakpoint |
3777 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3778 | { |
c02f5703 MS |
3779 | /* "Normal" instruction breakpoint: either the standard |
3780 | trap-instruction bp (bp_breakpoint), or a | |
3781 | bp_hardware_breakpoint. */ | |
3782 | ||
3783 | /* First check to see if we have to handle an overlay. */ | |
3784 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3785 | || bl->section == NULL |
3786 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3787 | { |
3788 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3789 | |
3790 | /* If we're trying to uninsert a memory breakpoint that we | |
3791 | know is set in a dynamic object that is marked | |
3792 | shlib_disabled, then either the dynamic object was | |
3793 | removed with "remove-symbol-file" or with | |
3794 | "nosharedlibrary". In the former case, we don't know | |
3795 | whether another dynamic object might have loaded over the | |
3796 | breakpoint's address -- the user might well let us know | |
3797 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3798 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3799 | list of dynamically loaded objects). If we have the |
3800 | breakpoint's shadow memory, that is, this is a software | |
3801 | breakpoint managed by GDB, check whether the breakpoint | |
3802 | is still inserted in memory, to avoid overwriting wrong | |
3803 | code with stale saved shadow contents. Note that HW | |
3804 | breakpoints don't have shadow memory, as they're | |
3805 | implemented using a mechanism that is not dependent on | |
3806 | being able to modify the target's memory, and as such | |
3807 | they should always be removed. */ | |
3808 | if (bl->shlib_disabled | |
3809 | && bl->target_info.shadow_len != 0 | |
3810 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3811 | val = 0; | |
3812 | else | |
73971819 | 3813 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3814 | } |
c906108c SS |
3815 | else |
3816 | { | |
4a64f543 | 3817 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3818 | Did we set a breakpoint at the LMA? */ |
3819 | if (!overlay_events_enabled) | |
3820 | { | |
3821 | /* Yes -- overlay event support is not active, so we | |
3822 | should have set a breakpoint at the LMA. Remove it. | |
3823 | */ | |
c02f5703 MS |
3824 | /* Ignore any failures: if the LMA is in ROM, we will |
3825 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3826 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3827 | target_remove_hw_breakpoint (bl->gdbarch, | |
3828 | &bl->overlay_target_info); | |
c02f5703 | 3829 | else |
35df4500 | 3830 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3831 | &bl->overlay_target_info, |
3832 | reason); | |
c02f5703 MS |
3833 | } |
3834 | /* Did we set a breakpoint at the VMA? | |
3835 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3836 | if (bl->inserted) |
c906108c | 3837 | { |
c02f5703 MS |
3838 | /* Yes -- remove it. Previously we did not bother to |
3839 | remove the breakpoint if the section had been | |
3840 | unmapped, but let's not rely on that being safe. We | |
3841 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3842 | |
3843 | /* However, we should remove *software* breakpoints only | |
3844 | if the section is still mapped, or else we overwrite | |
3845 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3846 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3847 | || section_is_mapped (bl->section)) | |
73971819 | 3848 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3849 | else |
3850 | val = 0; | |
c906108c | 3851 | } |
c02f5703 MS |
3852 | else |
3853 | { | |
3854 | /* No -- not inserted, so no need to remove. No error. */ | |
3855 | val = 0; | |
3856 | } | |
c906108c | 3857 | } |
879d1e6b | 3858 | |
08351840 PA |
3859 | /* In some cases, we might not be able to remove a breakpoint in |
3860 | a shared library that has already been removed, but we have | |
3861 | not yet processed the shlib unload event. Similarly for an | |
3862 | unloaded add-symbol-file object - the user might not yet have | |
3863 | had the chance to remove-symbol-file it. shlib_disabled will | |
3864 | be set if the library/object has already been removed, but | |
3865 | the breakpoint hasn't been uninserted yet, e.g., after | |
3866 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3867 | always-inserted mode. */ | |
076855f9 | 3868 | if (val |
08351840 PA |
3869 | && (bl->loc_type == bp_loc_software_breakpoint |
3870 | && (bl->shlib_disabled | |
3871 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3872 | || shared_objfile_contains_address_p (bl->pspace, |
3873 | bl->address)))) | |
879d1e6b UW |
3874 | val = 0; |
3875 | ||
c906108c SS |
3876 | if (val) |
3877 | return val; | |
b2b6a7da | 3878 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3879 | } |
35df4500 | 3880 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3881 | { |
77b06cd7 TJB |
3882 | gdb_assert (bl->owner->ops != NULL |
3883 | && bl->owner->ops->remove_location != NULL); | |
3884 | ||
b2b6a7da | 3885 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3886 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3887 | |
c906108c | 3888 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3889 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3890 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3891 | bl->owner->number); |
c906108c | 3892 | } |
35df4500 | 3893 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
3894 | && breakpoint_enabled (bl->owner) |
3895 | && !bl->duplicate) | |
ce78b96d | 3896 | { |
77b06cd7 TJB |
3897 | gdb_assert (bl->owner->ops != NULL |
3898 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3899 | |
73971819 | 3900 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3901 | if (val) |
3902 | return val; | |
77b06cd7 | 3903 | |
b2b6a7da | 3904 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3905 | } |
c906108c SS |
3906 | |
3907 | return 0; | |
3908 | } | |
3909 | ||
6c95b8df | 3910 | static int |
834c0d03 | 3911 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3912 | { |
35df4500 TJB |
3913 | /* BL is never in moribund_locations by our callers. */ |
3914 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3915 | |
6c95b8df PA |
3916 | /* The type of none suggests that owner is actually deleted. |
3917 | This should not ever happen. */ | |
35df4500 | 3918 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3919 | |
5ed8105e | 3920 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3921 | |
35df4500 | 3922 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3923 | |
5ed8105e | 3924 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3925 | } |
3926 | ||
c906108c SS |
3927 | /* Clear the "inserted" flag in all breakpoints. */ |
3928 | ||
25b22b0a | 3929 | void |
fba45db2 | 3930 | mark_breakpoints_out (void) |
c906108c | 3931 | { |
48d7020b | 3932 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 3933 | if (bl->pspace == current_program_space) |
35df4500 | 3934 | bl->inserted = 0; |
c906108c SS |
3935 | } |
3936 | ||
53a5351d JM |
3937 | /* Clear the "inserted" flag in all breakpoints and delete any |
3938 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3939 | |
3940 | Plus other such housekeeping that has to be done for breakpoints | |
3941 | between runs. | |
3942 | ||
53a5351d JM |
3943 | Note: this function gets called at the end of a run (by |
3944 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3945 | init_wait_for_inferior). */ |
c906108c SS |
3946 | |
3947 | ||
3948 | ||
3949 | void | |
fba45db2 | 3950 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3951 | { |
6c95b8df | 3952 | struct program_space *pspace = current_program_space; |
c906108c | 3953 | |
50c71eaf PA |
3954 | /* If breakpoint locations are shared across processes, then there's |
3955 | nothing to do. */ | |
f5656ead | 3956 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3957 | return; |
3958 | ||
1a853c52 | 3959 | mark_breakpoints_out (); |
075f6582 | 3960 | |
1428b37a | 3961 | for (breakpoint *b : all_breakpoints_safe ()) |
c5aa993b | 3962 | { |
6c95b8df PA |
3963 | if (b->loc && b->loc->pspace != pspace) |
3964 | continue; | |
3965 | ||
c5aa993b JM |
3966 | switch (b->type) |
3967 | { | |
3968 | case bp_call_dummy: | |
e2e4d78b | 3969 | case bp_longjmp_call_dummy: |
c906108c | 3970 | |
c5aa993b | 3971 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3972 | cause problems when the inferior is rerun, so we better get |
3973 | rid of it. */ | |
3974 | ||
3975 | case bp_watchpoint_scope: | |
3976 | ||
3977 | /* Also get rid of scope breakpoints. */ | |
3978 | ||
3979 | case bp_shlib_event: | |
3980 | ||
3981 | /* Also remove solib event breakpoints. Their addresses may | |
3982 | have changed since the last time we ran the program. | |
3983 | Actually we may now be debugging against different target; | |
3984 | and so the solib backend that installed this breakpoint may | |
3985 | not be used in by the target. E.g., | |
3986 | ||
3987 | (gdb) file prog-linux | |
3988 | (gdb) run # native linux target | |
3989 | ... | |
3990 | (gdb) kill | |
3991 | (gdb) file prog-win.exe | |
3992 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3993 | */ | |
c906108c | 3994 | |
f59f708a PA |
3995 | case bp_step_resume: |
3996 | ||
3997 | /* Also remove step-resume breakpoints. */ | |
3998 | ||
7c16b83e PA |
3999 | case bp_single_step: |
4000 | ||
4001 | /* Also remove single-step breakpoints. */ | |
4002 | ||
c5aa993b JM |
4003 | delete_breakpoint (b); |
4004 | break; | |
c906108c | 4005 | |
c5aa993b JM |
4006 | case bp_watchpoint: |
4007 | case bp_hardware_watchpoint: | |
4008 | case bp_read_watchpoint: | |
4009 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4010 | { |
4011 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4012 | |
3a5c3e22 PA |
4013 | /* Likewise for watchpoints on local expressions. */ |
4014 | if (w->exp_valid_block != NULL) | |
4015 | delete_breakpoint (b); | |
63000888 | 4016 | else |
3a5c3e22 | 4017 | { |
63000888 PA |
4018 | /* Get rid of existing locations, which are no longer |
4019 | valid. New ones will be created in | |
4020 | update_watchpoint, when the inferior is restarted. | |
4021 | The next update_global_location_list call will | |
4022 | garbage collect them. */ | |
4023 | b->loc = NULL; | |
4024 | ||
4025 | if (context == inf_starting) | |
4026 | { | |
4027 | /* Reset val field to force reread of starting value in | |
4028 | insert_breakpoints. */ | |
850645cf | 4029 | w->val.reset (nullptr); |
4c1d86d9 | 4030 | w->val_valid = false; |
63000888 PA |
4031 | } |
4032 | } | |
3a5c3e22 | 4033 | } |
c5aa993b JM |
4034 | break; |
4035 | default: | |
c5aa993b JM |
4036 | break; |
4037 | } | |
4038 | } | |
1c5cfe86 PA |
4039 | |
4040 | /* Get rid of the moribund locations. */ | |
1123588c | 4041 | for (bp_location *bl : moribund_locations) |
35df4500 | 4042 | decref_bp_location (&bl); |
1123588c | 4043 | moribund_locations.clear (); |
c906108c SS |
4044 | } |
4045 | ||
6c95b8df PA |
4046 | /* These functions concern about actual breakpoints inserted in the |
4047 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4048 | we need to hop over the bkpt --- so we check for address space | |
4049 | match, not program space. */ | |
4050 | ||
c2c6d25f JM |
4051 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4052 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4053 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4054 | permanent breakpoint. | |
4055 | - When continuing from a location with an ordinary breakpoint, we | |
4056 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4057 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4058 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4059 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4060 | |
c2c6d25f | 4061 | enum breakpoint_here |
accd0bcd | 4062 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4063 | { |
c2c6d25f | 4064 | int any_breakpoint_here = 0; |
c906108c | 4065 | |
48d7020b | 4066 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4067 | { |
35df4500 TJB |
4068 | if (bl->loc_type != bp_loc_software_breakpoint |
4069 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4070 | continue; |
4071 | ||
f1310107 | 4072 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4073 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4074 | || bl->permanent) |
f1310107 | 4075 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4076 | { |
4077 | if (overlay_debugging | |
35df4500 TJB |
4078 | && section_is_overlay (bl->section) |
4079 | && !section_is_mapped (bl->section)) | |
075f6582 | 4080 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4081 | else if (bl->permanent) |
075f6582 DJ |
4082 | return permanent_breakpoint_here; |
4083 | else | |
4084 | any_breakpoint_here = 1; | |
4085 | } | |
4086 | } | |
c906108c | 4087 | |
f486487f | 4088 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4089 | } |
4090 | ||
d35ae833 PA |
4091 | /* See breakpoint.h. */ |
4092 | ||
4093 | int | |
accd0bcd | 4094 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4095 | CORE_ADDR addr, ULONGEST len) |
4096 | { | |
48d7020b | 4097 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4098 | { |
4099 | if (bl->loc_type != bp_loc_software_breakpoint | |
4100 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4101 | continue; | |
4102 | ||
4103 | if ((breakpoint_enabled (bl->owner) | |
4104 | || bl->permanent) | |
4105 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4106 | addr, len)) | |
4107 | { | |
4108 | if (overlay_debugging | |
4109 | && section_is_overlay (bl->section) | |
4110 | && !section_is_mapped (bl->section)) | |
4111 | { | |
4112 | /* Unmapped overlay -- can't be a match. */ | |
4113 | continue; | |
4114 | } | |
4115 | ||
4116 | return 1; | |
4117 | } | |
4118 | } | |
4119 | ||
4120 | return 0; | |
4121 | } | |
4122 | ||
1c5cfe86 PA |
4123 | /* Return true if there's a moribund breakpoint at PC. */ |
4124 | ||
4125 | int | |
accd0bcd | 4126 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4127 | { |
1123588c | 4128 | for (bp_location *loc : moribund_locations) |
f1310107 | 4129 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4130 | return 1; |
4131 | ||
4132 | return 0; | |
4133 | } | |
c2c6d25f | 4134 | |
f7ce857f PA |
4135 | /* Returns non-zero iff BL is inserted at PC, in address space |
4136 | ASPACE. */ | |
4137 | ||
4138 | static int | |
4139 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4140 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4141 | { |
4142 | if (bl->inserted | |
4143 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4144 | aspace, pc)) | |
4145 | { | |
4146 | if (overlay_debugging | |
4147 | && section_is_overlay (bl->section) | |
4148 | && !section_is_mapped (bl->section)) | |
4149 | return 0; /* unmapped overlay -- can't be a match */ | |
4150 | else | |
4151 | return 1; | |
4152 | } | |
4153 | return 0; | |
4154 | } | |
4155 | ||
a1fd2fa5 | 4156 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4157 | |
4158 | int | |
accd0bcd | 4159 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4160 | { |
e0d9a270 | 4161 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4162 | { |
35df4500 TJB |
4163 | if (bl->loc_type != bp_loc_software_breakpoint |
4164 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4165 | continue; |
4166 | ||
f7ce857f PA |
4167 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4168 | return 1; | |
c5aa993b | 4169 | } |
c36b740a VP |
4170 | return 0; |
4171 | } | |
4172 | ||
a1fd2fa5 PA |
4173 | /* This function returns non-zero iff there is a software breakpoint |
4174 | inserted at PC. */ | |
c36b740a VP |
4175 | |
4176 | int | |
accd0bcd | 4177 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4178 | CORE_ADDR pc) |
4fa8626c | 4179 | { |
e0d9a270 | 4180 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4181 | { |
35df4500 | 4182 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4183 | continue; |
4184 | ||
f7ce857f PA |
4185 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4186 | return 1; | |
4fa8626c DJ |
4187 | } |
4188 | ||
4189 | return 0; | |
9c02b525 PA |
4190 | } |
4191 | ||
4192 | /* See breakpoint.h. */ | |
4193 | ||
4194 | int | |
accd0bcd | 4195 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4196 | CORE_ADDR pc) |
4197 | { | |
e0d9a270 | 4198 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4199 | { |
9c02b525 PA |
4200 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4201 | continue; | |
4202 | ||
4203 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4204 | return 1; | |
4205 | } | |
4206 | ||
4207 | return 0; | |
4fa8626c DJ |
4208 | } |
4209 | ||
9093389c | 4210 | int |
accd0bcd | 4211 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4212 | CORE_ADDR addr, ULONGEST len) |
4213 | { | |
43892fdf | 4214 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4215 | { |
9093389c PA |
4216 | if (bpt->type != bp_hardware_watchpoint |
4217 | && bpt->type != bp_access_watchpoint) | |
4218 | continue; | |
4219 | ||
4220 | if (!breakpoint_enabled (bpt)) | |
4221 | continue; | |
4222 | ||
40cb8ca5 | 4223 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4224 | if (loc->pspace->aspace == aspace && loc->inserted) |
4225 | { | |
4226 | CORE_ADDR l, h; | |
4227 | ||
4228 | /* Check for intersection. */ | |
768adc05 PA |
4229 | l = std::max<CORE_ADDR> (loc->address, addr); |
4230 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4231 | if (l < h) |
4232 | return 1; | |
4233 | } | |
4234 | } | |
4235 | return 0; | |
4236 | } | |
c5aa993b | 4237 | |
f2478a7e | 4238 | /* See breakpoint.h. */ |
c906108c | 4239 | |
f2478a7e SM |
4240 | bool |
4241 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4242 | { |
f2478a7e | 4243 | return (b->type == bp_catchpoint); |
c906108c SS |
4244 | } |
4245 | ||
c906108c SS |
4246 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4247 | Also free any storage that is part of a bpstat. */ | |
4248 | ||
4249 | void | |
fba45db2 | 4250 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4251 | { |
4252 | bpstat p; | |
4253 | bpstat q; | |
4254 | ||
4255 | if (bsp == 0) | |
4256 | return; | |
4257 | p = *bsp; | |
4258 | while (p != NULL) | |
4259 | { | |
4260 | q = p->next; | |
04afa70c | 4261 | delete p; |
c906108c SS |
4262 | p = q; |
4263 | } | |
4264 | *bsp = NULL; | |
4265 | } | |
4266 | ||
04afa70c TT |
4267 | bpstats::bpstats (const bpstats &other) |
4268 | : next (NULL), | |
4269 | bp_location_at (other.bp_location_at), | |
4270 | breakpoint_at (other.breakpoint_at), | |
4271 | commands (other.commands), | |
04afa70c TT |
4272 | print (other.print), |
4273 | stop (other.stop), | |
4274 | print_it (other.print_it) | |
4275 | { | |
850645cf TT |
4276 | if (other.old_val != NULL) |
4277 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4278 | } |
4279 | ||
c906108c SS |
4280 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4281 | is part of the bpstat is copied as well. */ | |
4282 | ||
4283 | bpstat | |
fba45db2 | 4284 | bpstat_copy (bpstat bs) |
c906108c SS |
4285 | { |
4286 | bpstat p = NULL; | |
4287 | bpstat tmp; | |
4288 | bpstat retval = NULL; | |
4289 | ||
4290 | if (bs == NULL) | |
4291 | return bs; | |
4292 | ||
4293 | for (; bs != NULL; bs = bs->next) | |
4294 | { | |
04afa70c | 4295 | tmp = new bpstats (*bs); |
31cc81e9 | 4296 | |
c906108c SS |
4297 | if (p == NULL) |
4298 | /* This is the first thing in the chain. */ | |
4299 | retval = tmp; | |
4300 | else | |
4301 | p->next = tmp; | |
4302 | p = tmp; | |
4303 | } | |
4304 | p->next = NULL; | |
4305 | return retval; | |
4306 | } | |
4307 | ||
4a64f543 | 4308 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4309 | |
4310 | bpstat | |
fba45db2 | 4311 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4312 | { |
c5aa993b JM |
4313 | if (bsp == NULL) |
4314 | return NULL; | |
c906108c | 4315 | |
c5aa993b JM |
4316 | for (; bsp != NULL; bsp = bsp->next) |
4317 | { | |
f431efe5 | 4318 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4319 | return bsp; |
4320 | } | |
c906108c SS |
4321 | return NULL; |
4322 | } | |
4323 | ||
ab04a2af TT |
4324 | /* See breakpoint.h. */ |
4325 | ||
4c462cb0 | 4326 | bool |
427cd150 | 4327 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4328 | { |
ab04a2af TT |
4329 | for (; bsp != NULL; bsp = bsp->next) |
4330 | { | |
427cd150 TT |
4331 | if (bsp->breakpoint_at == NULL) |
4332 | { | |
4333 | /* A moribund location can never explain a signal other than | |
4334 | GDB_SIGNAL_TRAP. */ | |
4335 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4336 | return true; |
427cd150 TT |
4337 | } |
4338 | else | |
47591c29 PA |
4339 | { |
4340 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4341 | sig)) | |
4c462cb0 | 4342 | return true; |
47591c29 | 4343 | } |
ab04a2af TT |
4344 | } |
4345 | ||
4c462cb0 | 4346 | return false; |
ab04a2af TT |
4347 | } |
4348 | ||
4a64f543 MS |
4349 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4350 | stopped at. *BSP upon return is a bpstat which points to the | |
4351 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4352 | good for anything but further calls to bpstat_num). | |
4353 | ||
8671a17b PA |
4354 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4355 | Return -1 if stopped at a breakpoint that has been deleted since | |
4356 | we set it. | |
4357 | Return 1 otherwise. */ | |
c906108c SS |
4358 | |
4359 | int | |
8671a17b | 4360 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4361 | { |
4362 | struct breakpoint *b; | |
4363 | ||
4364 | if ((*bsp) == NULL) | |
4365 | return 0; /* No more breakpoint values */ | |
8671a17b | 4366 | |
4a64f543 MS |
4367 | /* We assume we'll never have several bpstats that correspond to a |
4368 | single breakpoint -- otherwise, this function might return the | |
4369 | same number more than once and this will look ugly. */ | |
f431efe5 | 4370 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4371 | *bsp = (*bsp)->next; |
4372 | if (b == NULL) | |
4373 | return -1; /* breakpoint that's been deleted since */ | |
4374 | ||
4375 | *num = b->number; /* We have its number */ | |
4376 | return 1; | |
c906108c SS |
4377 | } |
4378 | ||
e93ca019 | 4379 | /* See breakpoint.h. */ |
c906108c SS |
4380 | |
4381 | void | |
e93ca019 | 4382 | bpstat_clear_actions (void) |
c906108c | 4383 | { |
e93ca019 JK |
4384 | bpstat bs; |
4385 | ||
00431a78 | 4386 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4387 | return; |
4388 | ||
00431a78 | 4389 | thread_info *tp = inferior_thread (); |
e93ca019 | 4390 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4391 | { |
d1b0a7bf | 4392 | bs->commands = NULL; |
850645cf | 4393 | bs->old_val.reset (nullptr); |
c906108c SS |
4394 | } |
4395 | } | |
4396 | ||
f3b1572e PA |
4397 | /* Called when a command is about to proceed the inferior. */ |
4398 | ||
4399 | static void | |
4400 | breakpoint_about_to_proceed (void) | |
4401 | { | |
d7e15655 | 4402 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4403 | { |
4404 | struct thread_info *tp = inferior_thread (); | |
4405 | ||
4406 | /* Allow inferior function calls in breakpoint commands to not | |
4407 | interrupt the command list. When the call finishes | |
4408 | successfully, the inferior will be standing at the same | |
4409 | breakpoint as if nothing happened. */ | |
16c381f0 | 4410 | if (tp->control.in_infcall) |
f3b1572e PA |
4411 | return; |
4412 | } | |
4413 | ||
4414 | breakpoint_proceeded = 1; | |
4415 | } | |
4416 | ||
abf85f46 JK |
4417 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4418 | or its equivalent. */ | |
4419 | ||
4420 | static int | |
4421 | command_line_is_silent (struct command_line *cmd) | |
4422 | { | |
4f45d445 | 4423 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4424 | } |
4425 | ||
4a64f543 MS |
4426 | /* Execute all the commands associated with all the breakpoints at |
4427 | this location. Any of these commands could cause the process to | |
4428 | proceed beyond this point, etc. We look out for such changes by | |
4429 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4430 | |
347bddb7 PA |
4431 | Returns true if a breakpoint command resumed the inferior. In that |
4432 | case, it is the caller's responsibility to recall it again with the | |
4433 | bpstat of the current thread. */ | |
4434 | ||
4435 | static int | |
4436 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4437 | { |
4438 | bpstat bs; | |
347bddb7 | 4439 | int again = 0; |
c906108c SS |
4440 | |
4441 | /* Avoid endless recursion if a `source' command is contained | |
4442 | in bs->commands. */ | |
4443 | if (executing_breakpoint_commands) | |
347bddb7 | 4444 | return 0; |
c906108c | 4445 | |
81b1e71c TT |
4446 | scoped_restore save_executing |
4447 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4448 | |
1ac32117 | 4449 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4450 | |
4a64f543 | 4451 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4452 | bs = *bsp; |
4453 | ||
4454 | breakpoint_proceeded = 0; | |
4455 | for (; bs != NULL; bs = bs->next) | |
4456 | { | |
d1b0a7bf | 4457 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4458 | |
4459 | /* Take ownership of the BSP's command tree, if it has one. | |
4460 | ||
dda83cd7 SM |
4461 | The command tree could legitimately contain commands like |
4462 | 'step' and 'next', which call clear_proceed_status, which | |
4463 | frees stop_bpstat's command tree. To make sure this doesn't | |
4464 | free the tree we're executing out from under us, we need to | |
4465 | take ownership of the tree ourselves. Since a given bpstat's | |
4466 | commands are only executed once, we don't need to copy it; we | |
4467 | can clear the pointer in the bpstat, and make sure we free | |
4468 | the tree when we're done. */ | |
d1b0a7bf | 4469 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4470 | bs->commands = NULL; |
d1b0a7bf TT |
4471 | if (ccmd != NULL) |
4472 | cmd = ccmd.get (); | |
abf85f46 JK |
4473 | if (command_line_is_silent (cmd)) |
4474 | { | |
4475 | /* The action has been already done by bpstat_stop_status. */ | |
4476 | cmd = cmd->next; | |
4477 | } | |
6c50ab1c | 4478 | |
c906108c SS |
4479 | while (cmd != NULL) |
4480 | { | |
4481 | execute_control_command (cmd); | |
4482 | ||
4483 | if (breakpoint_proceeded) | |
4484 | break; | |
4485 | else | |
4486 | cmd = cmd->next; | |
4487 | } | |
6c50ab1c | 4488 | |
c906108c | 4489 | if (breakpoint_proceeded) |
32c1e744 | 4490 | { |
cb814510 | 4491 | if (current_ui->async) |
347bddb7 PA |
4492 | /* If we are in async mode, then the target might be still |
4493 | running, not stopped at any breakpoint, so nothing for | |
4494 | us to do here -- just return to the event loop. */ | |
4495 | ; | |
32c1e744 VP |
4496 | else |
4497 | /* In sync mode, when execute_control_command returns | |
4498 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4499 | Breakpoint commands for that stop were not run, since |
4500 | execute_command does not run breakpoint commands -- | |
4501 | only command_line_handler does, but that one is not | |
4502 | involved in execution of breakpoint commands. So, we | |
4503 | can now execute breakpoint commands. It should be | |
4504 | noted that making execute_command do bpstat actions is | |
4505 | not an option -- in this case we'll have recursive | |
4506 | invocation of bpstat for each breakpoint with a | |
4507 | command, and can easily blow up GDB stack. Instead, we | |
4508 | return true, which will trigger the caller to recall us | |
4509 | with the new stop_bpstat. */ | |
4510 | again = 1; | |
4511 | break; | |
32c1e744 | 4512 | } |
c906108c | 4513 | } |
347bddb7 PA |
4514 | return again; |
4515 | } | |
4516 | ||
00431a78 PA |
4517 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4518 | one, is alive and has execution. Return NULL otherwise. */ | |
4519 | ||
4520 | static thread_info * | |
4521 | get_bpstat_thread () | |
4522 | { | |
55f6301a | 4523 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4524 | return NULL; |
4525 | ||
4526 | thread_info *tp = inferior_thread (); | |
4527 | if (tp->state == THREAD_EXITED || tp->executing) | |
4528 | return NULL; | |
4529 | return tp; | |
4530 | } | |
4531 | ||
347bddb7 PA |
4532 | void |
4533 | bpstat_do_actions (void) | |
4534 | { | |
694c6bf5 | 4535 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4536 | thread_info *tp; |
353d1d73 | 4537 | |
347bddb7 | 4538 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4539 | while ((tp = get_bpstat_thread ()) != NULL) |
4540 | { | |
4541 | /* Since in sync mode, bpstat_do_actions may resume the | |
4542 | inferior, and only return when it is stopped at the next | |
4543 | breakpoint, we keep doing breakpoint actions until it returns | |
4544 | false to indicate the inferior was not resumed. */ | |
4545 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4546 | break; | |
4547 | } | |
353d1d73 | 4548 | |
694c6bf5 | 4549 | cleanup_if_error.release (); |
c906108c SS |
4550 | } |
4551 | ||
fa4727a6 DJ |
4552 | /* Print out the (old or new) value associated with a watchpoint. */ |
4553 | ||
4554 | static void | |
4555 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4556 | { | |
4557 | if (val == NULL) | |
7f6aba03 | 4558 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4559 | else |
79a45b7d TT |
4560 | { |
4561 | struct value_print_options opts; | |
4562 | get_user_print_options (&opts); | |
4563 | value_print (val, stream, &opts); | |
4564 | } | |
fa4727a6 DJ |
4565 | } |
4566 | ||
f303dbd6 PA |
4567 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4568 | debugging multiple threads. */ | |
4569 | ||
4570 | void | |
4571 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4572 | { | |
112e8700 | 4573 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4574 | return; |
4575 | ||
112e8700 | 4576 | uiout->text ("\n"); |
f303dbd6 PA |
4577 | |
4578 | if (show_thread_that_caused_stop ()) | |
4579 | { | |
4580 | const char *name; | |
4581 | struct thread_info *thr = inferior_thread (); | |
4582 | ||
112e8700 | 4583 | uiout->text ("Thread "); |
33eca680 | 4584 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4585 | |
4586 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4587 | if (name != NULL) | |
4588 | { | |
112e8700 | 4589 | uiout->text (" \""); |
33eca680 | 4590 | uiout->field_string ("name", name); |
112e8700 | 4591 | uiout->text ("\""); |
f303dbd6 PA |
4592 | } |
4593 | ||
112e8700 | 4594 | uiout->text (" hit "); |
f303dbd6 PA |
4595 | } |
4596 | } | |
4597 | ||
e514a9d6 | 4598 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4599 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4600 | 'print_it' in the bpstat structure. Under some circumstances we |
4601 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4602 | normal_stop(). */ |
e514a9d6 JM |
4603 | |
4604 | static enum print_stop_action | |
4605 | print_bp_stop_message (bpstat bs) | |
4606 | { | |
4607 | switch (bs->print_it) | |
4608 | { | |
4609 | case print_it_noop: | |
4a64f543 | 4610 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4611 | return PRINT_UNKNOWN; |
4612 | break; | |
4613 | ||
4614 | case print_it_done: | |
4615 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4616 | relevant messages. */ |
e514a9d6 JM |
4617 | return PRINT_SRC_AND_LOC; |
4618 | break; | |
4619 | ||
4620 | case print_it_normal: | |
4f8d1dc6 | 4621 | { |
f431efe5 PA |
4622 | struct breakpoint *b = bs->breakpoint_at; |
4623 | ||
1a6a67de TJB |
4624 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4625 | which has since been deleted. */ | |
4626 | if (b == NULL) | |
4627 | return PRINT_UNKNOWN; | |
4628 | ||
348d480f PA |
4629 | /* Normal case. Call the breakpoint's print_it method. */ |
4630 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4631 | } |
348d480f | 4632 | break; |
3086aeae | 4633 | |
e514a9d6 | 4634 | default: |
8e65ff28 | 4635 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4636 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4637 | break; |
c906108c | 4638 | } |
c906108c SS |
4639 | } |
4640 | ||
edcc5120 TT |
4641 | /* A helper function that prints a shared library stopped event. */ |
4642 | ||
4643 | static void | |
4644 | print_solib_event (int is_catchpoint) | |
4645 | { | |
6fb16ce6 | 4646 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4647 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4648 | |
4649 | if (!is_catchpoint) | |
4650 | { | |
4651 | if (any_added || any_deleted) | |
112e8700 | 4652 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4653 | else |
112e8700 SM |
4654 | current_uiout->text (_("Stopped due to shared library event (no " |
4655 | "libraries added or removed)\n")); | |
edcc5120 TT |
4656 | } |
4657 | ||
112e8700 SM |
4658 | if (current_uiout->is_mi_like_p ()) |
4659 | current_uiout->field_string ("reason", | |
4660 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4661 | |
4662 | if (any_deleted) | |
4663 | { | |
112e8700 | 4664 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4665 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4666 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4667 | { |
6fb16ce6 SM |
4668 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4669 | ||
edcc5120 | 4670 | if (ix > 0) |
112e8700 SM |
4671 | current_uiout->text (" "); |
4672 | current_uiout->field_string ("library", name); | |
4673 | current_uiout->text ("\n"); | |
edcc5120 | 4674 | } |
edcc5120 TT |
4675 | } |
4676 | ||
4677 | if (any_added) | |
4678 | { | |
112e8700 | 4679 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4680 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4681 | bool first = true; |
52941706 | 4682 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4683 | { |
bcb430e4 | 4684 | if (!first) |
112e8700 | 4685 | current_uiout->text (" "); |
bcb430e4 | 4686 | first = false; |
112e8700 SM |
4687 | current_uiout->field_string ("library", iter->so_name); |
4688 | current_uiout->text ("\n"); | |
edcc5120 | 4689 | } |
edcc5120 TT |
4690 | } |
4691 | } | |
4692 | ||
e514a9d6 JM |
4693 | /* Print a message indicating what happened. This is called from |
4694 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4695 | list - a list of the eventpoints that caused this stop. KIND is |
4696 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4697 | routine calls the generic print routine for printing a message |
4698 | about reasons for stopping. This will print (for example) the | |
4699 | "Breakpoint n," part of the output. The return value of this | |
4700 | routine is one of: | |
c906108c | 4701 | |
4a64f543 | 4702 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4703 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4704 | code to print the location. An example is |
c5aa993b JM |
4705 | "Breakpoint 1, " which should be followed by |
4706 | the location. | |
917317f4 | 4707 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4708 | to also print the location part of the message. |
4709 | An example is the catch/throw messages, which | |
4a64f543 | 4710 | don't require a location appended to the end. |
917317f4 | 4711 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4712 | further info to be printed. */ |
c906108c | 4713 | |
917317f4 | 4714 | enum print_stop_action |
36dfb11c | 4715 | bpstat_print (bpstat bs, int kind) |
c906108c | 4716 | { |
f486487f | 4717 | enum print_stop_action val; |
c5aa993b | 4718 | |
c906108c | 4719 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4720 | (Currently all watchpoints go on the bpstat whether hit or not. |
4721 | That probably could (should) be changed, provided care is taken | |
c906108c | 4722 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4723 | for (; bs; bs = bs->next) |
4724 | { | |
4725 | val = print_bp_stop_message (bs); | |
4726 | if (val == PRINT_SRC_ONLY | |
4727 | || val == PRINT_SRC_AND_LOC | |
4728 | || val == PRINT_NOTHING) | |
4729 | return val; | |
4730 | } | |
c906108c | 4731 | |
36dfb11c TT |
4732 | /* If we had hit a shared library event breakpoint, |
4733 | print_bp_stop_message would print out this message. If we hit an | |
4734 | OS-level shared library event, do the same thing. */ | |
4735 | if (kind == TARGET_WAITKIND_LOADED) | |
4736 | { | |
edcc5120 | 4737 | print_solib_event (0); |
36dfb11c TT |
4738 | return PRINT_NOTHING; |
4739 | } | |
4740 | ||
e514a9d6 | 4741 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4742 | with and nothing was printed. */ |
917317f4 | 4743 | return PRINT_UNKNOWN; |
c906108c SS |
4744 | } |
4745 | ||
bf469271 | 4746 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4747 | |
bf469271 PA |
4748 | static bool |
4749 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4750 | { |
278cd55f | 4751 | struct value *mark = value_mark (); |
bf469271 | 4752 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4753 | |
c906108c | 4754 | value_free_to_mark (mark); |
bf469271 | 4755 | return res; |
c906108c SS |
4756 | } |
4757 | ||
5760d0ab | 4758 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4759 | |
04afa70c TT |
4760 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4761 | : next (NULL), | |
b6433ede | 4762 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4763 | breakpoint_at (bl->owner), |
4764 | commands (NULL), | |
04afa70c TT |
4765 | print (0), |
4766 | stop (0), | |
4767 | print_it (print_it_normal) | |
c906108c | 4768 | { |
04afa70c TT |
4769 | **bs_link_pointer = this; |
4770 | *bs_link_pointer = &next; | |
4771 | } | |
4772 | ||
4773 | bpstats::bpstats () | |
4774 | : next (NULL), | |
04afa70c TT |
4775 | breakpoint_at (NULL), |
4776 | commands (NULL), | |
04afa70c TT |
4777 | print (0), |
4778 | stop (0), | |
4779 | print_it (print_it_normal) | |
4780 | { | |
c906108c SS |
4781 | } |
4782 | \f | |
d983da9c DJ |
4783 | /* The target has stopped with waitstatus WS. Check if any hardware |
4784 | watchpoints have triggered, according to the target. */ | |
4785 | ||
4786 | int | |
4787 | watchpoints_triggered (struct target_waitstatus *ws) | |
4788 | { | |
57810aa7 | 4789 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 4790 | CORE_ADDR addr; |
d983da9c DJ |
4791 | |
4792 | if (!stopped_by_watchpoint) | |
4793 | { | |
4794 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4795 | as not triggered. */ | |
43892fdf | 4796 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4797 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4798 | { |
4799 | struct watchpoint *w = (struct watchpoint *) b; | |
4800 | ||
4801 | w->watchpoint_triggered = watch_triggered_no; | |
4802 | } | |
d983da9c DJ |
4803 | |
4804 | return 0; | |
4805 | } | |
4806 | ||
328d42d8 | 4807 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
4808 | { |
4809 | /* We were stopped by a watchpoint, but we don't know where. | |
4810 | Mark all watchpoints as unknown. */ | |
43892fdf | 4811 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4812 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4813 | { |
4814 | struct watchpoint *w = (struct watchpoint *) b; | |
4815 | ||
4816 | w->watchpoint_triggered = watch_triggered_unknown; | |
4817 | } | |
d983da9c | 4818 | |
3c4797ba | 4819 | return 1; |
d983da9c DJ |
4820 | } |
4821 | ||
4822 | /* The target could report the data address. Mark watchpoints | |
4823 | affected by this data address as triggered, and all others as not | |
4824 | triggered. */ | |
4825 | ||
43892fdf | 4826 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4827 | if (is_hardware_watchpoint (b)) |
d983da9c | 4828 | { |
3a5c3e22 | 4829 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 4830 | |
3a5c3e22 | 4831 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 4832 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 4833 | { |
3a5c3e22 | 4834 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4835 | { |
3a5c3e22 PA |
4836 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4837 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4838 | |
4839 | if (newaddr == start) | |
4840 | { | |
3a5c3e22 | 4841 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4842 | break; |
4843 | } | |
4844 | } | |
4845 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
4846 | else if (target_watchpoint_addr_within_range |
4847 | (current_inferior ()->top_target (), addr, loc->address, | |
4848 | loc->length)) | |
9c06b0b4 | 4849 | { |
3a5c3e22 | 4850 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4851 | break; |
4852 | } | |
4853 | } | |
d983da9c DJ |
4854 | } |
4855 | ||
4856 | return 1; | |
4857 | } | |
4858 | ||
bf469271 PA |
4859 | /* Possible return values for watchpoint_check. */ |
4860 | enum wp_check_result | |
4861 | { | |
4862 | /* The watchpoint has been deleted. */ | |
4863 | WP_DELETED = 1, | |
4864 | ||
4865 | /* The value has changed. */ | |
4866 | WP_VALUE_CHANGED = 2, | |
4867 | ||
4868 | /* The value has not changed. */ | |
4869 | WP_VALUE_NOT_CHANGED = 3, | |
4870 | ||
4871 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4872 | WP_IGNORE = 4, | |
4873 | }; | |
c906108c SS |
4874 | |
4875 | #define BP_TEMPFLAG 1 | |
4876 | #define BP_HARDWAREFLAG 2 | |
4877 | ||
4a64f543 | 4878 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4879 | changed. */ |
553e4c11 | 4880 | |
bf469271 PA |
4881 | static wp_check_result |
4882 | watchpoint_check (bpstat bs) | |
c906108c | 4883 | { |
3a5c3e22 | 4884 | struct watchpoint *b; |
c906108c SS |
4885 | struct frame_info *fr; |
4886 | int within_current_scope; | |
4887 | ||
f431efe5 | 4888 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4889 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4890 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4891 | |
f6bc2008 PA |
4892 | /* If this is a local watchpoint, we only want to check if the |
4893 | watchpoint frame is in scope if the current thread is the thread | |
4894 | that was used to create the watchpoint. */ | |
4895 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4896 | return WP_IGNORE; |
f6bc2008 | 4897 | |
c906108c SS |
4898 | if (b->exp_valid_block == NULL) |
4899 | within_current_scope = 1; | |
4900 | else | |
4901 | { | |
edb3359d DJ |
4902 | struct frame_info *frame = get_current_frame (); |
4903 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4904 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4905 | ||
c9cf6e20 | 4906 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4907 | still in the function but the stack frame has already been |
4908 | invalidated. Since we can't rely on the values of local | |
4909 | variables after the stack has been destroyed, we are treating | |
4910 | the watchpoint in that state as `not changed' without further | |
4911 | checking. Don't mark watchpoints as changed if the current | |
4912 | frame is in an epilogue - even if they are in some other | |
4913 | frame, our view of the stack is likely to be wrong and | |
4914 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4915 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4916 | return WP_IGNORE; |
a0f49112 | 4917 | |
101dcfbe | 4918 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4919 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4920 | |
4921 | /* If we've gotten confused in the unwinder, we might have | |
4922 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4923 | if (within_current_scope) |
4924 | { | |
4925 | struct symbol *function; | |
4926 | ||
4927 | function = get_frame_function (fr); | |
4928 | if (function == NULL | |
4929 | || !contained_in (b->exp_valid_block, | |
4930 | SYMBOL_BLOCK_VALUE (function))) | |
4931 | within_current_scope = 0; | |
4932 | } | |
69fbadd5 | 4933 | |
edb3359d | 4934 | if (within_current_scope) |
c906108c SS |
4935 | /* If we end up stopping, the current frame will get selected |
4936 | in normal_stop. So this call to select_frame won't affect | |
4937 | the user. */ | |
0f7d239c | 4938 | select_frame (fr); |
c906108c | 4939 | } |
c5aa993b | 4940 | |
c906108c SS |
4941 | if (within_current_scope) |
4942 | { | |
4a64f543 | 4943 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
4944 | time before we return to the command level and call |
4945 | free_all_values. We can't call free_all_values because we | |
4946 | might be in the middle of evaluating a function call. */ | |
c906108c | 4947 | |
9c06b0b4 | 4948 | struct value *mark; |
fa4727a6 DJ |
4949 | struct value *new_val; |
4950 | ||
c1fc2657 | 4951 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4952 | /* Since we don't know the exact trigger address (from |
4953 | stopped_data_address), just tell the user we've triggered | |
4954 | a mask watchpoint. */ | |
4955 | return WP_VALUE_CHANGED; | |
4956 | ||
4957 | mark = value_mark (); | |
1eaebe02 | 4958 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 4959 | NULL, NULL, false); |
218d2fc6 | 4960 | |
bb9d5f81 PP |
4961 | if (b->val_bitsize != 0) |
4962 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4963 | ||
4a64f543 MS |
4964 | /* We use value_equal_contents instead of value_equal because |
4965 | the latter coerces an array to a pointer, thus comparing just | |
4966 | the address of the array instead of its contents. This is | |
4967 | not what we want. */ | |
fa4727a6 | 4968 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4969 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4970 | new_val))) | |
c906108c | 4971 | { |
c906108c | 4972 | bs->old_val = b->val; |
850645cf | 4973 | b->val = release_value (new_val); |
4c1d86d9 | 4974 | b->val_valid = true; |
850645cf TT |
4975 | if (new_val != NULL) |
4976 | value_free_to_mark (mark); | |
c906108c SS |
4977 | return WP_VALUE_CHANGED; |
4978 | } | |
4979 | else | |
4980 | { | |
60e1c644 | 4981 | /* Nothing changed. */ |
c906108c | 4982 | value_free_to_mark (mark); |
c906108c SS |
4983 | return WP_VALUE_NOT_CHANGED; |
4984 | } | |
4985 | } | |
4986 | else | |
4987 | { | |
4988 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
4989 | if we temporarily ignored the watchpoint, then when |
4990 | we reenter the block in which it is valid it contains | |
4991 | garbage (in the case of a function, it may have two | |
4992 | garbage values, one before and one after the prologue). | |
4993 | So we can't even detect the first assignment to it and | |
4994 | watch after that (since the garbage may or may not equal | |
4995 | the first value assigned). */ | |
348d480f PA |
4996 | /* We print all the stop information in |
4997 | breakpoint_ops->print_it, but in this case, by the time we | |
4998 | call breakpoint_ops->print_it this bp will be deleted | |
4999 | already. So we have no choice but print the information | |
5000 | here. */ | |
468afe6c | 5001 | |
0e454242 | 5002 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5003 | { |
468afe6c PA |
5004 | struct ui_out *uiout = current_uiout; |
5005 | ||
112e8700 SM |
5006 | if (uiout->is_mi_like_p ()) |
5007 | uiout->field_string | |
5008 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5009 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5010 | "left the block in\n" | |
5011 | "which its expression is valid.\n", | |
5012 | signed_field ("wpnum", b->number)); | |
468afe6c | 5013 | } |
4ce44c66 | 5014 | |
cdac0397 | 5015 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5016 | b->commands = NULL; |
d0fb5eae | 5017 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5018 | |
5019 | return WP_DELETED; | |
5020 | } | |
5021 | } | |
5022 | ||
18a18393 | 5023 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5024 | breakpoint location BL. This function does not check if we should |
5025 | stop, only if BL explains the stop. */ | |
5026 | ||
18a18393 | 5027 | static int |
6c95b8df | 5028 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5029 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5030 | const struct target_waitstatus *ws) |
18a18393 VP |
5031 | { |
5032 | struct breakpoint *b = bl->owner; | |
5033 | ||
348d480f | 5034 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5035 | gdb_assert (b != NULL); |
5036 | ||
bd522513 | 5037 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5038 | } |
5039 | ||
3a5c3e22 PA |
5040 | /* Determine if the watched values have actually changed, and we |
5041 | should stop. If not, set BS->stop to 0. */ | |
5042 | ||
18a18393 VP |
5043 | static void |
5044 | bpstat_check_watchpoint (bpstat bs) | |
5045 | { | |
2bdf28a0 | 5046 | const struct bp_location *bl; |
3a5c3e22 | 5047 | struct watchpoint *b; |
2bdf28a0 JK |
5048 | |
5049 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5050 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5051 | gdb_assert (bl != NULL); |
3a5c3e22 | 5052 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5053 | gdb_assert (b != NULL); |
18a18393 | 5054 | |
18a18393 | 5055 | { |
18a18393 VP |
5056 | int must_check_value = 0; |
5057 | ||
c1fc2657 | 5058 | if (b->type == bp_watchpoint) |
18a18393 VP |
5059 | /* For a software watchpoint, we must always check the |
5060 | watched value. */ | |
5061 | must_check_value = 1; | |
5062 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5063 | /* We have a hardware watchpoint (read, write, or access) | |
5064 | and the target earlier reported an address watched by | |
5065 | this watchpoint. */ | |
5066 | must_check_value = 1; | |
5067 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5068 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5069 | /* We were stopped by a hardware watchpoint, but the target could |
5070 | not report the data address. We must check the watchpoint's | |
5071 | value. Access and read watchpoints are out of luck; without | |
5072 | a data address, we can't figure it out. */ | |
5073 | must_check_value = 1; | |
3a5c3e22 | 5074 | |
18a18393 VP |
5075 | if (must_check_value) |
5076 | { | |
bf469271 PA |
5077 | wp_check_result e; |
5078 | ||
a70b8144 | 5079 | try |
bf469271 PA |
5080 | { |
5081 | e = watchpoint_check (bs); | |
5082 | } | |
230d2906 | 5083 | catch (const gdb_exception &ex) |
bf469271 PA |
5084 | { |
5085 | exception_fprintf (gdb_stderr, ex, | |
5086 | "Error evaluating expression " | |
5087 | "for watchpoint %d\n", | |
5088 | b->number); | |
5089 | ||
5090 | SWITCH_THRU_ALL_UIS () | |
5091 | { | |
5092 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5093 | b->number); | |
5094 | } | |
5095 | watchpoint_del_at_next_stop (b); | |
5096 | e = WP_DELETED; | |
5097 | } | |
bf469271 | 5098 | |
18a18393 VP |
5099 | switch (e) |
5100 | { | |
5101 | case WP_DELETED: | |
5102 | /* We've already printed what needs to be printed. */ | |
5103 | bs->print_it = print_it_done; | |
5104 | /* Stop. */ | |
5105 | break; | |
60e1c644 PA |
5106 | case WP_IGNORE: |
5107 | bs->print_it = print_it_noop; | |
5108 | bs->stop = 0; | |
5109 | break; | |
18a18393 | 5110 | case WP_VALUE_CHANGED: |
c1fc2657 | 5111 | if (b->type == bp_read_watchpoint) |
18a18393 | 5112 | { |
85d721b8 PA |
5113 | /* There are two cases to consider here: |
5114 | ||
4a64f543 | 5115 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5116 | In that case, trust the target, and always report |
5117 | the watchpoint hit to the user. Even though | |
5118 | reads don't cause value changes, the value may | |
5119 | have changed since the last time it was read, and | |
5120 | since we're not trapping writes, we will not see | |
5121 | those, and as such we should ignore our notion of | |
5122 | old value. | |
5123 | ||
4a64f543 | 5124 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5125 | reads and writes. There are two ways this may |
5126 | happen: | |
5127 | ||
4a64f543 | 5128 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5129 | reads only, but can break on accesses (reads or |
5130 | writes), such as e.g., x86. We detect this case | |
5131 | at the time we try to insert read watchpoints. | |
5132 | ||
4a64f543 | 5133 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5134 | watchpoints, but, the user set an access or write |
5135 | watchpoint watching the same memory as this read | |
5136 | watchpoint. | |
5137 | ||
5138 | If we're watching memory writes as well as reads, | |
5139 | ignore watchpoint hits when we find that the | |
5140 | value hasn't changed, as reads don't cause | |
5141 | changes. This still gives false positives when | |
5142 | the program writes the same value to memory as | |
5143 | what there was already in memory (we will confuse | |
5144 | it for a read), but it's much better than | |
5145 | nothing. */ | |
5146 | ||
5147 | int other_write_watchpoint = 0; | |
5148 | ||
5149 | if (bl->watchpoint_type == hw_read) | |
5150 | { | |
43892fdf | 5151 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5152 | if (other_b->type == bp_hardware_watchpoint |
5153 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5154 | { |
3a5c3e22 PA |
5155 | struct watchpoint *other_w = |
5156 | (struct watchpoint *) other_b; | |
5157 | ||
5158 | if (other_w->watchpoint_triggered | |
5159 | == watch_triggered_yes) | |
5160 | { | |
5161 | other_write_watchpoint = 1; | |
5162 | break; | |
5163 | } | |
85d721b8 PA |
5164 | } |
5165 | } | |
5166 | ||
5167 | if (other_write_watchpoint | |
5168 | || bl->watchpoint_type == hw_access) | |
5169 | { | |
5170 | /* We're watching the same memory for writes, | |
5171 | and the value changed since the last time we | |
5172 | updated it, so this trap must be for a write. | |
5173 | Ignore it. */ | |
5174 | bs->print_it = print_it_noop; | |
5175 | bs->stop = 0; | |
5176 | } | |
18a18393 VP |
5177 | } |
5178 | break; | |
5179 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5180 | if (b->type == bp_hardware_watchpoint |
5181 | || b->type == bp_watchpoint) | |
18a18393 VP |
5182 | { |
5183 | /* Don't stop: write watchpoints shouldn't fire if | |
5184 | the value hasn't changed. */ | |
5185 | bs->print_it = print_it_noop; | |
5186 | bs->stop = 0; | |
5187 | } | |
5188 | /* Stop. */ | |
5189 | break; | |
5190 | default: | |
5191 | /* Can't happen. */ | |
18a18393 VP |
5192 | break; |
5193 | } | |
5194 | } | |
5195 | else /* must_check_value == 0 */ | |
5196 | { | |
5197 | /* This is a case where some watchpoint(s) triggered, but | |
5198 | not at the address of this watchpoint, or else no | |
5199 | watchpoint triggered after all. So don't print | |
5200 | anything for this watchpoint. */ | |
5201 | bs->print_it = print_it_noop; | |
5202 | bs->stop = 0; | |
5203 | } | |
5204 | } | |
5205 | } | |
5206 | ||
7d4df6a4 DE |
5207 | /* For breakpoints that are currently marked as telling gdb to stop, |
5208 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5209 | of breakpoint referred to by BS. If we should not stop for this |
5210 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5211 | |
18a18393 | 5212 | static void |
00431a78 | 5213 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5214 | { |
2bdf28a0 JK |
5215 | const struct bp_location *bl; |
5216 | struct breakpoint *b; | |
bf469271 PA |
5217 | /* Assume stop. */ |
5218 | bool condition_result = true; | |
7d4df6a4 DE |
5219 | struct expression *cond; |
5220 | ||
5221 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5222 | |
5223 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5224 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5225 | gdb_assert (bl != NULL); |
f431efe5 | 5226 | b = bs->breakpoint_at; |
2bdf28a0 | 5227 | gdb_assert (b != NULL); |
18a18393 | 5228 | |
b775012e LM |
5229 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5230 | need to do so again since GDB does not know if we stopped due to a | |
5231 | breakpoint or a single step breakpoint. */ | |
5232 | ||
18a18393 | 5233 | if (frame_id_p (b->frame_id) |
edb3359d | 5234 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5235 | { |
7d4df6a4 DE |
5236 | bs->stop = 0; |
5237 | return; | |
5238 | } | |
60e1c644 | 5239 | |
12ab52e9 PA |
5240 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5241 | evaluating the condition if this isn't the specified | |
5242 | thread/task. */ | |
00431a78 PA |
5243 | if ((b->thread != -1 && b->thread != thread->global_num) |
5244 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5245 | { |
5246 | bs->stop = 0; | |
5247 | return; | |
5248 | } | |
5249 | ||
6dddc817 DE |
5250 | /* Evaluate extension language breakpoints that have a "stop" method |
5251 | implemented. */ | |
5252 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5253 | |
7d4df6a4 DE |
5254 | if (is_watchpoint (b)) |
5255 | { | |
5256 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5257 | |
4d01a485 | 5258 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5259 | } |
5260 | else | |
4d01a485 | 5261 | cond = bl->cond.get (); |
60e1c644 | 5262 | |
7d4df6a4 DE |
5263 | if (cond && b->disposition != disp_del_at_next_stop) |
5264 | { | |
5265 | int within_current_scope = 1; | |
5266 | struct watchpoint * w; | |
60e1c644 | 5267 | |
7d4df6a4 DE |
5268 | /* We use value_mark and value_free_to_mark because it could |
5269 | be a long time before we return to the command level and | |
5270 | call free_all_values. We can't call free_all_values | |
5271 | because we might be in the middle of evaluating a | |
5272 | function call. */ | |
5273 | struct value *mark = value_mark (); | |
5274 | ||
5275 | if (is_watchpoint (b)) | |
5276 | w = (struct watchpoint *) b; | |
5277 | else | |
5278 | w = NULL; | |
5279 | ||
5280 | /* Need to select the frame, with all that implies so that | |
5281 | the conditions will have the right context. Because we | |
5282 | use the frame, we will not see an inlined function's | |
5283 | variables when we arrive at a breakpoint at the start | |
5284 | of the inlined function; the current frame will be the | |
5285 | call site. */ | |
5286 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5287 | select_frame (get_current_frame ()); | |
5288 | else | |
18a18393 | 5289 | { |
7d4df6a4 DE |
5290 | struct frame_info *frame; |
5291 | ||
5292 | /* For local watchpoint expressions, which particular | |
5293 | instance of a local is being watched matters, so we | |
5294 | keep track of the frame to evaluate the expression | |
5295 | in. To evaluate the condition however, it doesn't | |
5296 | really matter which instantiation of the function | |
5297 | where the condition makes sense triggers the | |
5298 | watchpoint. This allows an expression like "watch | |
5299 | global if q > 10" set in `func', catch writes to | |
5300 | global on all threads that call `func', or catch | |
5301 | writes on all recursive calls of `func' by a single | |
5302 | thread. We simply always evaluate the condition in | |
5303 | the innermost frame that's executing where it makes | |
5304 | sense to evaluate the condition. It seems | |
5305 | intuitive. */ | |
5306 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5307 | if (frame != NULL) | |
5308 | select_frame (frame); | |
5309 | else | |
5310 | within_current_scope = 0; | |
18a18393 | 5311 | } |
7d4df6a4 | 5312 | if (within_current_scope) |
bf469271 | 5313 | { |
a70b8144 | 5314 | try |
bf469271 PA |
5315 | { |
5316 | condition_result = breakpoint_cond_eval (cond); | |
5317 | } | |
230d2906 | 5318 | catch (const gdb_exception &ex) |
bf469271 PA |
5319 | { |
5320 | exception_fprintf (gdb_stderr, ex, | |
5321 | "Error in testing breakpoint condition:\n"); | |
5322 | } | |
bf469271 | 5323 | } |
7d4df6a4 | 5324 | else |
18a18393 | 5325 | { |
7d4df6a4 DE |
5326 | warning (_("Watchpoint condition cannot be tested " |
5327 | "in the current scope")); | |
5328 | /* If we failed to set the right context for this | |
5329 | watchpoint, unconditionally report it. */ | |
18a18393 | 5330 | } |
7d4df6a4 DE |
5331 | /* FIXME-someday, should give breakpoint #. */ |
5332 | value_free_to_mark (mark); | |
18a18393 | 5333 | } |
7d4df6a4 | 5334 | |
bf469271 | 5335 | if (cond && !condition_result) |
7d4df6a4 DE |
5336 | { |
5337 | bs->stop = 0; | |
5338 | } | |
7d4df6a4 DE |
5339 | else if (b->ignore_count > 0) |
5340 | { | |
5341 | b->ignore_count--; | |
5342 | bs->stop = 0; | |
5343 | /* Increase the hit count even though we don't stop. */ | |
5344 | ++(b->hit_count); | |
76727919 | 5345 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5346 | } |
18a18393 VP |
5347 | } |
5348 | ||
1cf4d951 PA |
5349 | /* Returns true if we need to track moribund locations of LOC's type |
5350 | on the current target. */ | |
5351 | ||
5352 | static int | |
5353 | need_moribund_for_location_type (struct bp_location *loc) | |
5354 | { | |
5355 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5356 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5357 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5358 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5359 | } | |
5360 | ||
ddfe970e | 5361 | /* See breakpoint.h. */ |
c906108c SS |
5362 | |
5363 | bpstat | |
ddfe970e | 5364 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5365 | const struct target_waitstatus *ws) |
c906108c | 5366 | { |
5760d0ab | 5367 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5368 | |
43892fdf | 5369 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5370 | { |
1a853c52 | 5371 | if (!breakpoint_enabled (b)) |
429374b8 | 5372 | continue; |
a5606eee | 5373 | |
40cb8ca5 | 5374 | for (bp_location *bl : b->locations ()) |
429374b8 | 5375 | { |
4a64f543 MS |
5376 | /* For hardware watchpoints, we look only at the first |
5377 | location. The watchpoint_check function will work on the | |
5378 | entire expression, not the individual locations. For | |
5379 | read watchpoints, the watchpoints_triggered function has | |
5380 | checked all locations already. */ | |
429374b8 JK |
5381 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5382 | break; | |
18a18393 | 5383 | |
b5fa468f | 5384 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5385 | continue; |
c5aa993b | 5386 | |
09ac7c10 | 5387 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5388 | continue; |
c5aa993b | 5389 | |
4a64f543 MS |
5390 | /* Come here if it's a watchpoint, or if the break address |
5391 | matches. */ | |
c5aa993b | 5392 | |
ddfe970e KS |
5393 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5394 | explain stop. */ | |
c5aa993b | 5395 | |
f431efe5 PA |
5396 | /* Assume we stop. Should we find a watchpoint that is not |
5397 | actually triggered, or if the condition of the breakpoint | |
5398 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5399 | bs->stop = 1; |
5400 | bs->print = 1; | |
d983da9c | 5401 | |
f431efe5 PA |
5402 | /* If this is a scope breakpoint, mark the associated |
5403 | watchpoint as triggered so that we will handle the | |
5404 | out-of-scope event. We'll get to the watchpoint next | |
5405 | iteration. */ | |
d0fb5eae | 5406 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5407 | { |
5408 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5409 | ||
5410 | w->watchpoint_triggered = watch_triggered_yes; | |
5411 | } | |
f431efe5 PA |
5412 | } |
5413 | } | |
5414 | ||
7c16b83e | 5415 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5416 | if (!target_supports_stopped_by_sw_breakpoint () |
5417 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5418 | { |
1123588c | 5419 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5420 | { |
1cf4d951 PA |
5421 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5422 | && need_moribund_for_location_type (loc)) | |
5423 | { | |
ddfe970e | 5424 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5425 | /* For hits of moribund locations, we should just proceed. */ |
5426 | bs->stop = 0; | |
5427 | bs->print = 0; | |
5428 | bs->print_it = print_it_noop; | |
5429 | } | |
f431efe5 PA |
5430 | } |
5431 | } | |
5432 | ||
ddfe970e KS |
5433 | return bs_head; |
5434 | } | |
5435 | ||
5436 | /* See breakpoint.h. */ | |
5437 | ||
5438 | bpstat | |
5439 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5440 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5441 | const struct target_waitstatus *ws, |
5442 | bpstat stop_chain) | |
5443 | { | |
5444 | struct breakpoint *b = NULL; | |
5445 | /* First item of allocated bpstat's. */ | |
5446 | bpstat bs_head = stop_chain; | |
5447 | bpstat bs; | |
5448 | int need_remove_insert; | |
5449 | int removed_any; | |
5450 | ||
5451 | /* First, build the bpstat chain with locations that explain a | |
5452 | target stop, while being careful to not set the target running, | |
5453 | as that may invalidate locations (in particular watchpoint | |
5454 | locations are recreated). Resuming will happen here with | |
5455 | breakpoint conditions or watchpoint expressions that include | |
5456 | inferior function calls. */ | |
5457 | if (bs_head == NULL) | |
5458 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5459 | ||
edcc5120 TT |
5460 | /* A bit of special processing for shlib breakpoints. We need to |
5461 | process solib loading here, so that the lists of loaded and | |
5462 | unloaded libraries are correct before we handle "catch load" and | |
5463 | "catch unload". */ | |
5464 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5465 | { | |
5d268276 | 5466 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5467 | { |
5468 | handle_solib_event (); | |
5469 | break; | |
5470 | } | |
5471 | } | |
5472 | ||
f431efe5 PA |
5473 | /* Now go through the locations that caused the target to stop, and |
5474 | check whether we're interested in reporting this stop to higher | |
5475 | layers, or whether we should resume the target transparently. */ | |
5476 | ||
5477 | removed_any = 0; | |
5478 | ||
5760d0ab | 5479 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5480 | { |
5481 | if (!bs->stop) | |
5482 | continue; | |
5483 | ||
f431efe5 | 5484 | b = bs->breakpoint_at; |
348d480f PA |
5485 | b->ops->check_status (bs); |
5486 | if (bs->stop) | |
28010a5d | 5487 | { |
00431a78 | 5488 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5489 | |
429374b8 JK |
5490 | if (bs->stop) |
5491 | { | |
5492 | ++(b->hit_count); | |
76727919 | 5493 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5494 | |
4a64f543 | 5495 | /* We will stop here. */ |
429374b8 JK |
5496 | if (b->disposition == disp_disable) |
5497 | { | |
816338b5 | 5498 | --(b->enable_count); |
1a853c52 | 5499 | if (b->enable_count <= 0) |
429374b8 | 5500 | b->enable_state = bp_disabled; |
f431efe5 | 5501 | removed_any = 1; |
429374b8 JK |
5502 | } |
5503 | if (b->silent) | |
5504 | bs->print = 0; | |
5505 | bs->commands = b->commands; | |
abf85f46 | 5506 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5507 | ? bs->commands.get () : NULL)) |
abf85f46 | 5508 | bs->print = 0; |
9d6e6e84 HZ |
5509 | |
5510 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5511 | } |
5512 | ||
348d480f | 5513 | } |
a9b3a50f PA |
5514 | |
5515 | /* Print nothing for this entry if we don't stop or don't | |
5516 | print. */ | |
5517 | if (!bs->stop || !bs->print) | |
5518 | bs->print_it = print_it_noop; | |
429374b8 | 5519 | } |
876fa593 | 5520 | |
d983da9c DJ |
5521 | /* If we aren't stopping, the value of some hardware watchpoint may |
5522 | not have changed, but the intermediate memory locations we are | |
5523 | watching may have. Don't bother if we're stopping; this will get | |
5524 | done later. */ | |
d832cb68 | 5525 | need_remove_insert = 0; |
5760d0ab JK |
5526 | if (! bpstat_causes_stop (bs_head)) |
5527 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5528 | if (!bs->stop |
f431efe5 PA |
5529 | && bs->breakpoint_at |
5530 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5531 | { |
3a5c3e22 PA |
5532 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5533 | ||
5534 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5535 | need_remove_insert = 1; |
d983da9c DJ |
5536 | } |
5537 | ||
d832cb68 | 5538 | if (need_remove_insert) |
44702360 | 5539 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5540 | else if (removed_any) |
44702360 | 5541 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5542 | |
5760d0ab | 5543 | return bs_head; |
c906108c | 5544 | } |
628fe4e4 JK |
5545 | |
5546 | static void | |
61c26be8 | 5547 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5548 | { |
628fe4e4 JK |
5549 | struct gdbarch *gdbarch; |
5550 | ||
1eb8556f | 5551 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5552 | |
628fe4e4 JK |
5553 | /* Switch terminal for any messages produced by |
5554 | breakpoint_re_set. */ | |
223ffa71 | 5555 | target_terminal::ours_for_output (); |
628fe4e4 | 5556 | |
61c26be8 MS |
5557 | gdbarch = get_frame_arch (get_current_frame ()); |
5558 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5559 | thus it is expected that its objectfile can be found through | |
5560 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5561 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5562 | function needs to be updated too. */ | |
5563 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5564 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
5565 | jit_event_handler (gdbarch, jit_bp_sym.objfile); | |
628fe4e4 | 5566 | |
223ffa71 | 5567 | target_terminal::inferior (); |
628fe4e4 JK |
5568 | } |
5569 | ||
5570 | /* Prepare WHAT final decision for infrun. */ | |
5571 | ||
5572 | /* Decide what infrun needs to do with this bpstat. */ | |
5573 | ||
c906108c | 5574 | struct bpstat_what |
0e30163f | 5575 | bpstat_what (bpstat bs_head) |
c906108c | 5576 | { |
c906108c | 5577 | struct bpstat_what retval; |
0e30163f | 5578 | bpstat bs; |
c906108c | 5579 | |
628fe4e4 | 5580 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5581 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5582 | retval.is_longjmp = false; |
628fe4e4 | 5583 | |
0e30163f | 5584 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5585 | { |
628fe4e4 JK |
5586 | /* Extract this BS's action. After processing each BS, we check |
5587 | if its action overrides all we've seem so far. */ | |
5588 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5589 | enum bptype bptype; | |
5590 | ||
c906108c | 5591 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5592 | { |
5593 | /* I suspect this can happen if it was a momentary | |
5594 | breakpoint which has since been deleted. */ | |
5595 | bptype = bp_none; | |
5596 | } | |
20874c92 | 5597 | else |
f431efe5 | 5598 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5599 | |
5600 | switch (bptype) | |
c906108c SS |
5601 | { |
5602 | case bp_none: | |
628fe4e4 | 5603 | break; |
c906108c SS |
5604 | case bp_breakpoint: |
5605 | case bp_hardware_breakpoint: | |
7c16b83e | 5606 | case bp_single_step: |
c906108c SS |
5607 | case bp_until: |
5608 | case bp_finish: | |
a9b3a50f | 5609 | case bp_shlib_event: |
c906108c SS |
5610 | if (bs->stop) |
5611 | { | |
5612 | if (bs->print) | |
628fe4e4 | 5613 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5614 | else |
628fe4e4 | 5615 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5616 | } |
5617 | else | |
628fe4e4 | 5618 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5619 | break; |
5620 | case bp_watchpoint: | |
5621 | case bp_hardware_watchpoint: | |
5622 | case bp_read_watchpoint: | |
5623 | case bp_access_watchpoint: | |
5624 | if (bs->stop) | |
5625 | { | |
5626 | if (bs->print) | |
628fe4e4 | 5627 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5628 | else |
628fe4e4 | 5629 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5630 | } |
5631 | else | |
628fe4e4 JK |
5632 | { |
5633 | /* There was a watchpoint, but we're not stopping. | |
5634 | This requires no further action. */ | |
5635 | } | |
c906108c SS |
5636 | break; |
5637 | case bp_longjmp: | |
e2e4d78b | 5638 | case bp_longjmp_call_dummy: |
186c406b | 5639 | case bp_exception: |
0a39bb32 PA |
5640 | if (bs->stop) |
5641 | { | |
5642 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5643 | retval.is_longjmp = bptype != bp_exception; | |
5644 | } | |
5645 | else | |
5646 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5647 | break; |
5648 | case bp_longjmp_resume: | |
186c406b | 5649 | case bp_exception_resume: |
0a39bb32 PA |
5650 | if (bs->stop) |
5651 | { | |
5652 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5653 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5654 | } | |
5655 | else | |
5656 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5657 | break; |
5658 | case bp_step_resume: | |
5659 | if (bs->stop) | |
628fe4e4 JK |
5660 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5661 | else | |
c906108c | 5662 | { |
628fe4e4 JK |
5663 | /* It is for the wrong frame. */ |
5664 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5665 | } |
c906108c | 5666 | break; |
2c03e5be PA |
5667 | case bp_hp_step_resume: |
5668 | if (bs->stop) | |
5669 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5670 | else | |
5671 | { | |
5672 | /* It is for the wrong frame. */ | |
5673 | this_action = BPSTAT_WHAT_SINGLE; | |
5674 | } | |
5675 | break; | |
c906108c | 5676 | case bp_watchpoint_scope: |
c4093a6a | 5677 | case bp_thread_event: |
1900040c | 5678 | case bp_overlay_event: |
0fd8e87f | 5679 | case bp_longjmp_master: |
aa7d318d | 5680 | case bp_std_terminate_master: |
186c406b | 5681 | case bp_exception_master: |
628fe4e4 | 5682 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5683 | break; |
ce78b96d | 5684 | case bp_catchpoint: |
c5aa993b JM |
5685 | if (bs->stop) |
5686 | { | |
5687 | if (bs->print) | |
628fe4e4 | 5688 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5689 | else |
628fe4e4 | 5690 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5691 | } |
5692 | else | |
628fe4e4 | 5693 | { |
cb1e4e32 PA |
5694 | /* Some catchpoints are implemented with breakpoints. |
5695 | For those, we need to step over the breakpoint. */ | |
5696 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5697 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5698 | } |
5699 | break; | |
628fe4e4 | 5700 | case bp_jit_event: |
628fe4e4 | 5701 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5702 | break; |
c906108c | 5703 | case bp_call_dummy: |
53a5351d JM |
5704 | /* Make sure the action is stop (silent or noisy), |
5705 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5706 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5707 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5708 | break; |
5709 | case bp_std_terminate: | |
5710 | /* Make sure the action is stop (silent or noisy), | |
5711 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5712 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5713 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5714 | break; |
1042e4c0 | 5715 | case bp_tracepoint: |
7a697b8d | 5716 | case bp_fast_tracepoint: |
0fb4aa4b | 5717 | case bp_static_tracepoint: |
1042e4c0 SS |
5718 | /* Tracepoint hits should not be reported back to GDB, and |
5719 | if one got through somehow, it should have been filtered | |
5720 | out already. */ | |
5721 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5722 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5723 | break; |
5724 | case bp_gnu_ifunc_resolver: | |
5725 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5726 | this_action = BPSTAT_WHAT_SINGLE; | |
5727 | break; | |
5728 | case bp_gnu_ifunc_resolver_return: | |
5729 | /* The breakpoint will be removed, execution will restart from the | |
5730 | PC of the former breakpoint. */ | |
5731 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5732 | break; | |
e7e0cddf SS |
5733 | |
5734 | case bp_dprintf: | |
a11cfd87 HZ |
5735 | if (bs->stop) |
5736 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5737 | else | |
5738 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5739 | break; |
5740 | ||
628fe4e4 JK |
5741 | default: |
5742 | internal_error (__FILE__, __LINE__, | |
5743 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5744 | } |
628fe4e4 | 5745 | |
325fac50 | 5746 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5747 | } |
628fe4e4 | 5748 | |
243a9253 PA |
5749 | return retval; |
5750 | } | |
628fe4e4 | 5751 | |
243a9253 PA |
5752 | void |
5753 | bpstat_run_callbacks (bpstat bs_head) | |
5754 | { | |
5755 | bpstat bs; | |
628fe4e4 | 5756 | |
0e30163f JK |
5757 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5758 | { | |
5759 | struct breakpoint *b = bs->breakpoint_at; | |
5760 | ||
5761 | if (b == NULL) | |
5762 | continue; | |
5763 | switch (b->type) | |
5764 | { | |
243a9253 | 5765 | case bp_jit_event: |
61c26be8 | 5766 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 5767 | break; |
0e30163f JK |
5768 | case bp_gnu_ifunc_resolver: |
5769 | gnu_ifunc_resolver_stop (b); | |
5770 | break; | |
5771 | case bp_gnu_ifunc_resolver_return: | |
5772 | gnu_ifunc_resolver_return_stop (b); | |
5773 | break; | |
5774 | } | |
5775 | } | |
c906108c SS |
5776 | } |
5777 | ||
4c462cb0 | 5778 | /* See breakpoint.h. */ |
c906108c | 5779 | |
4c462cb0 SM |
5780 | bool |
5781 | bpstat_should_step () | |
c906108c | 5782 | { |
43892fdf | 5783 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 5784 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 5785 | return true; |
43892fdf | 5786 | |
4c462cb0 | 5787 | return false; |
c906108c SS |
5788 | } |
5789 | ||
4c462cb0 SM |
5790 | /* See breakpoint.h. */ |
5791 | ||
5792 | bool | |
67822962 PA |
5793 | bpstat_causes_stop (bpstat bs) |
5794 | { | |
5795 | for (; bs != NULL; bs = bs->next) | |
5796 | if (bs->stop) | |
4c462cb0 | 5797 | return true; |
67822962 | 5798 | |
4c462cb0 | 5799 | return false; |
67822962 PA |
5800 | } |
5801 | ||
c906108c | 5802 | \f |
c5aa993b | 5803 | |
170b53b2 UW |
5804 | /* Compute a string of spaces suitable to indent the next line |
5805 | so it starts at the position corresponding to the table column | |
5806 | named COL_NAME in the currently active table of UIOUT. */ | |
5807 | ||
5808 | static char * | |
5809 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5810 | { | |
5811 | static char wrap_indent[80]; | |
5812 | int i, total_width, width, align; | |
c5209615 | 5813 | const char *text; |
170b53b2 UW |
5814 | |
5815 | total_width = 0; | |
112e8700 | 5816 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5817 | { |
5818 | if (strcmp (text, col_name) == 0) | |
5819 | { | |
5820 | gdb_assert (total_width < sizeof wrap_indent); | |
5821 | memset (wrap_indent, ' ', total_width); | |
5822 | wrap_indent[total_width] = 0; | |
5823 | ||
5824 | return wrap_indent; | |
5825 | } | |
5826 | ||
5827 | total_width += width + 1; | |
5828 | } | |
5829 | ||
5830 | return NULL; | |
5831 | } | |
5832 | ||
b775012e LM |
5833 | /* Determine if the locations of this breakpoint will have their conditions |
5834 | evaluated by the target, host or a mix of both. Returns the following: | |
5835 | ||
5836 | "host": Host evals condition. | |
5837 | "host or target": Host or Target evals condition. | |
5838 | "target": Target evals condition. | |
5839 | */ | |
5840 | ||
5841 | static const char * | |
5842 | bp_condition_evaluator (struct breakpoint *b) | |
5843 | { | |
b775012e LM |
5844 | char host_evals = 0; |
5845 | char target_evals = 0; | |
5846 | ||
5847 | if (!b) | |
5848 | return NULL; | |
5849 | ||
5850 | if (!is_breakpoint (b)) | |
5851 | return NULL; | |
5852 | ||
5853 | if (gdb_evaluates_breakpoint_condition_p () | |
5854 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5855 | return condition_evaluation_host; | |
5856 | ||
40cb8ca5 | 5857 | for (bp_location *bl : b->locations ()) |
b775012e LM |
5858 | { |
5859 | if (bl->cond_bytecode) | |
5860 | target_evals++; | |
5861 | else | |
5862 | host_evals++; | |
5863 | } | |
5864 | ||
5865 | if (host_evals && target_evals) | |
5866 | return condition_evaluation_both; | |
5867 | else if (target_evals) | |
5868 | return condition_evaluation_target; | |
5869 | else | |
5870 | return condition_evaluation_host; | |
5871 | } | |
5872 | ||
5873 | /* Determine the breakpoint location's condition evaluator. This is | |
5874 | similar to bp_condition_evaluator, but for locations. */ | |
5875 | ||
5876 | static const char * | |
5877 | bp_location_condition_evaluator (struct bp_location *bl) | |
5878 | { | |
5879 | if (bl && !is_breakpoint (bl->owner)) | |
5880 | return NULL; | |
5881 | ||
5882 | if (gdb_evaluates_breakpoint_condition_p () | |
5883 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5884 | return condition_evaluation_host; | |
5885 | ||
5886 | if (bl && bl->cond_bytecode) | |
5887 | return condition_evaluation_target; | |
5888 | else | |
5889 | return condition_evaluation_host; | |
5890 | } | |
5891 | ||
859825b8 JK |
5892 | /* Print the LOC location out of the list of B->LOC locations. */ |
5893 | ||
170b53b2 UW |
5894 | static void |
5895 | print_breakpoint_location (struct breakpoint *b, | |
5896 | struct bp_location *loc) | |
0d381245 | 5897 | { |
79a45e25 | 5898 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5899 | |
5900 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5901 | |
859825b8 JK |
5902 | if (loc != NULL && loc->shlib_disabled) |
5903 | loc = NULL; | |
5904 | ||
6c95b8df PA |
5905 | if (loc != NULL) |
5906 | set_current_program_space (loc->pspace); | |
5907 | ||
56435ebe | 5908 | if (b->display_canonical) |
d28cd78a | 5909 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5910 | else if (loc && loc->symtab) |
0d381245 | 5911 | { |
4a27f119 KS |
5912 | const struct symbol *sym = loc->symbol; |
5913 | ||
0d381245 VP |
5914 | if (sym) |
5915 | { | |
112e8700 | 5916 | uiout->text ("in "); |
987012b8 | 5917 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5918 | function_name_style.style ()); |
112e8700 SM |
5919 | uiout->text (" "); |
5920 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5921 | uiout->text ("at "); | |
0d381245 | 5922 | } |
112e8700 | 5923 | uiout->field_string ("file", |
cbe56571 | 5924 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5925 | file_name_style.style ()); |
112e8700 | 5926 | uiout->text (":"); |
05cba821 | 5927 | |
112e8700 SM |
5928 | if (uiout->is_mi_like_p ()) |
5929 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5930 | |
381befee | 5931 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5932 | } |
859825b8 | 5933 | else if (loc) |
0d381245 | 5934 | { |
d7e74731 | 5935 | string_file stb; |
170b53b2 | 5936 | |
d7e74731 | 5937 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5938 | demangle, ""); |
112e8700 | 5939 | uiout->field_stream ("at", stb); |
0d381245 | 5940 | } |
859825b8 | 5941 | else |
f00aae0f | 5942 | { |
d28cd78a TT |
5943 | uiout->field_string ("pending", |
5944 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5945 | /* If extra_string is available, it could be holding a condition |
5946 | or dprintf arguments. In either case, make sure it is printed, | |
5947 | too, but only for non-MI streams. */ | |
112e8700 | 5948 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5949 | { |
5950 | if (b->type == bp_dprintf) | |
112e8700 | 5951 | uiout->text (","); |
f00aae0f | 5952 | else |
112e8700 SM |
5953 | uiout->text (" "); |
5954 | uiout->text (b->extra_string); | |
f00aae0f KS |
5955 | } |
5956 | } | |
6c95b8df | 5957 | |
b775012e LM |
5958 | if (loc && is_breakpoint (b) |
5959 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5960 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5961 | { | |
112e8700 SM |
5962 | uiout->text (" ("); |
5963 | uiout->field_string ("evaluated-by", | |
b775012e | 5964 | bp_location_condition_evaluator (loc)); |
112e8700 | 5965 | uiout->text (")"); |
b775012e | 5966 | } |
0d381245 VP |
5967 | } |
5968 | ||
269b11a2 PA |
5969 | static const char * |
5970 | bptype_string (enum bptype type) | |
c906108c | 5971 | { |
c4093a6a JM |
5972 | struct ep_type_description |
5973 | { | |
5974 | enum bptype type; | |
a121b7c1 | 5975 | const char *description; |
c4093a6a JM |
5976 | }; |
5977 | static struct ep_type_description bptypes[] = | |
c906108c | 5978 | { |
c5aa993b JM |
5979 | {bp_none, "?deleted?"}, |
5980 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5981 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5982 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5983 | {bp_until, "until"}, |
5984 | {bp_finish, "finish"}, | |
5985 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5986 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5987 | {bp_read_watchpoint, "read watchpoint"}, |
5988 | {bp_access_watchpoint, "acc watchpoint"}, | |
5989 | {bp_longjmp, "longjmp"}, | |
5990 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5991 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5992 | {bp_exception, "exception"}, |
5993 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5994 | {bp_step_resume, "step resume"}, |
2c03e5be | 5995 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5996 | {bp_watchpoint_scope, "watchpoint scope"}, |
5997 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5998 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5999 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6000 | {bp_thread_event, "thread events"}, |
1900040c | 6001 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6002 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6003 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6004 | {bp_exception_master, "exception master"}, |
ce78b96d | 6005 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6006 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6007 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6008 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6009 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6010 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6011 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6012 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6013 | }; |
269b11a2 PA |
6014 | |
6015 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6016 | || ((int) type != bptypes[(int) type].type)) | |
6017 | internal_error (__FILE__, __LINE__, | |
6018 | _("bptypes table does not describe type #%d."), | |
6019 | (int) type); | |
6020 | ||
6021 | return bptypes[(int) type].description; | |
6022 | } | |
6023 | ||
998580f1 MK |
6024 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6025 | For CLI, prefix the list with the string 'inf'. */ | |
6026 | ||
6027 | static void | |
6028 | output_thread_groups (struct ui_out *uiout, | |
6029 | const char *field_name, | |
5c632425 | 6030 | const std::vector<int> &inf_nums, |
998580f1 MK |
6031 | int mi_only) |
6032 | { | |
112e8700 | 6033 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6034 | |
6035 | /* For backward compatibility, don't display inferiors in CLI unless | |
6036 | there are several. Always display them for MI. */ | |
6037 | if (!is_mi && mi_only) | |
6038 | return; | |
6039 | ||
10f489e5 | 6040 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6041 | |
5c632425 | 6042 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6043 | { |
6044 | if (is_mi) | |
6045 | { | |
6046 | char mi_group[10]; | |
6047 | ||
5c632425 | 6048 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6049 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6050 | } |
6051 | else | |
6052 | { | |
6053 | if (i == 0) | |
112e8700 | 6054 | uiout->text (" inf "); |
998580f1 | 6055 | else |
112e8700 | 6056 | uiout->text (", "); |
998580f1 | 6057 | |
5c632425 | 6058 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6059 | } |
6060 | } | |
998580f1 MK |
6061 | } |
6062 | ||
a38118e5 PA |
6063 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6064 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6065 | info breakpoints" show the software breakpoint locations of | |
6066 | catchpoints, which are considered internal implementation | |
6067 | detail. */ | |
269b11a2 PA |
6068 | |
6069 | static void | |
6070 | print_one_breakpoint_location (struct breakpoint *b, | |
6071 | struct bp_location *loc, | |
6072 | int loc_number, | |
6073 | struct bp_location **last_loc, | |
a38118e5 | 6074 | int allflag, bool raw_loc) |
269b11a2 PA |
6075 | { |
6076 | struct command_line *l; | |
c2c6d25f | 6077 | static char bpenables[] = "nynny"; |
c906108c | 6078 | |
79a45e25 | 6079 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6080 | int header_of_multiple = 0; |
6081 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6082 | struct value_print_options opts; |
6083 | ||
6084 | get_user_print_options (&opts); | |
0d381245 VP |
6085 | |
6086 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6087 | /* See comment in print_one_breakpoint concerning treatment of |
6088 | breakpoints with single disabled location. */ | |
0d381245 VP |
6089 | if (loc == NULL |
6090 | && (b->loc != NULL | |
b5fa468f TBA |
6091 | && (b->loc->next != NULL |
6092 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6093 | header_of_multiple = 1; |
6094 | if (loc == NULL) | |
6095 | loc = b->loc; | |
6096 | ||
c4093a6a JM |
6097 | annotate_record (); |
6098 | ||
6099 | /* 1 */ | |
6100 | annotate_field (0); | |
0d381245 | 6101 | if (part_of_multiple) |
528e1572 | 6102 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6103 | else |
381befee | 6104 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6105 | |
6106 | /* 2 */ | |
6107 | annotate_field (1); | |
0d381245 | 6108 | if (part_of_multiple) |
112e8700 | 6109 | uiout->field_skip ("type"); |
269b11a2 | 6110 | else |
112e8700 | 6111 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6112 | |
6113 | /* 3 */ | |
6114 | annotate_field (2); | |
0d381245 | 6115 | if (part_of_multiple) |
112e8700 | 6116 | uiout->field_skip ("disp"); |
0d381245 | 6117 | else |
112e8700 | 6118 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6119 | |
c4093a6a JM |
6120 | /* 4 */ |
6121 | annotate_field (3); | |
85c88e2a TBA |
6122 | /* For locations that are disabled because of an invalid condition, |
6123 | display "N*" on CLI, where "*" refers to a footnote below the | |
6124 | table. For MI, simply display a "N" without a footnote. */ | |
6125 | const char *N = (uiout->is_mi_like_p ()) ? "N" : "N*"; | |
0d381245 | 6126 | if (part_of_multiple) |
85c88e2a | 6127 | uiout->field_string ("enabled", (loc->disabled_by_cond ? N |
b5fa468f | 6128 | : (loc->enabled ? "y" : "n"))); |
0d381245 | 6129 | else |
112e8700 | 6130 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6131 | |
c4093a6a | 6132 | /* 5 and 6 */ |
a38118e5 | 6133 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6134 | b->ops->print_one (b, last_loc); |
3086aeae | 6135 | else |
a38118e5 PA |
6136 | { |
6137 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6138 | { |
6139 | struct watchpoint *w = (struct watchpoint *) b; | |
6140 | ||
6141 | /* Field 4, the address, is omitted (which makes the columns | |
6142 | not line up too nicely with the headers, but the effect | |
6143 | is relatively readable). */ | |
6144 | if (opts.addressprint) | |
112e8700 | 6145 | uiout->field_skip ("addr"); |
3a5c3e22 | 6146 | annotate_field (5); |
112e8700 | 6147 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6148 | } |
f06f1252 TT |
6149 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6150 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6151 | { |
6152 | if (opts.addressprint) | |
6153 | { | |
6154 | annotate_field (4); | |
6155 | if (header_of_multiple) | |
7f6aba03 TT |
6156 | uiout->field_string ("addr", "<MULTIPLE>", |
6157 | metadata_style.style ()); | |
a38118e5 | 6158 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6159 | uiout->field_string ("addr", "<PENDING>", |
6160 | metadata_style.style ()); | |
a38118e5 PA |
6161 | else |
6162 | uiout->field_core_addr ("addr", | |
6163 | loc->gdbarch, loc->address); | |
6164 | } | |
6165 | annotate_field (5); | |
6166 | if (!header_of_multiple) | |
6167 | print_breakpoint_location (b, loc); | |
6168 | if (b->loc) | |
6169 | *last_loc = b->loc; | |
6170 | } | |
6171 | } | |
6c95b8df | 6172 | |
998580f1 | 6173 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6174 | { |
5c632425 | 6175 | std::vector<int> inf_nums; |
998580f1 | 6176 | int mi_only = 1; |
6c95b8df | 6177 | |
08036331 | 6178 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6179 | { |
6180 | if (inf->pspace == loc->pspace) | |
5c632425 | 6181 | inf_nums.push_back (inf->num); |
6c95b8df | 6182 | } |
998580f1 | 6183 | |
dda83cd7 | 6184 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6185 | there are several. Always display for MI. */ |
6186 | if (allflag | |
6187 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6188 | && (program_spaces.size () > 1 |
998580f1 MK |
6189 | || number_of_inferiors () > 1) |
6190 | /* LOC is for existing B, it cannot be in | |
6191 | moribund_locations and thus having NULL OWNER. */ | |
6192 | && loc->owner->type != bp_catchpoint)) | |
6193 | mi_only = 0; | |
5c632425 | 6194 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6195 | } |
6196 | ||
4a306c9a | 6197 | if (!part_of_multiple) |
c4093a6a | 6198 | { |
4a306c9a JB |
6199 | if (b->thread != -1) |
6200 | { | |
6201 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6202 | "stop only in" line a little further down. */ |
112e8700 | 6203 | uiout->text (" thread "); |
381befee | 6204 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6205 | } |
6206 | else if (b->task != 0) | |
6207 | { | |
112e8700 | 6208 | uiout->text (" task "); |
381befee | 6209 | uiout->field_signed ("task", b->task); |
4a306c9a | 6210 | } |
c4093a6a | 6211 | } |
f1310107 | 6212 | |
112e8700 | 6213 | uiout->text ("\n"); |
f1310107 | 6214 | |
348d480f | 6215 | if (!part_of_multiple) |
f1310107 TJB |
6216 | b->ops->print_one_detail (b, uiout); |
6217 | ||
0d381245 | 6218 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6219 | { |
6220 | annotate_field (6); | |
112e8700 | 6221 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6222 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6223 | the frame ID. */ |
112e8700 | 6224 | uiout->field_core_addr ("frame", |
5af949e3 | 6225 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6226 | uiout->text ("\n"); |
c4093a6a JM |
6227 | } |
6228 | ||
28010a5d | 6229 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6230 | { |
6231 | annotate_field (7); | |
d77f58be | 6232 | if (is_tracepoint (b)) |
112e8700 | 6233 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6234 | else |
112e8700 SM |
6235 | uiout->text ("\tstop only if "); |
6236 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6237 | |
6238 | /* Print whether the target is doing the breakpoint's condition | |
6239 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6240 | if (is_breakpoint (b) | |
6241 | && breakpoint_condition_evaluation_mode () | |
6242 | == condition_evaluation_target) | |
6243 | { | |
6a831f06 PA |
6244 | uiout->message (" (%pF evals)", |
6245 | string_field ("evaluated-by", | |
6246 | bp_condition_evaluator (b))); | |
b775012e | 6247 | } |
112e8700 | 6248 | uiout->text ("\n"); |
0101ce28 JJ |
6249 | } |
6250 | ||
0d381245 | 6251 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6252 | { |
4a64f543 | 6253 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6254 | uiout->text ("\tstop only in thread "); |
6255 | if (uiout->is_mi_like_p ()) | |
381befee | 6256 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6257 | else |
6258 | { | |
6259 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6260 | ||
112e8700 | 6261 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6262 | } |
112e8700 | 6263 | uiout->text ("\n"); |
c4093a6a JM |
6264 | } |
6265 | ||
556ec64d YQ |
6266 | if (!part_of_multiple) |
6267 | { | |
6268 | if (b->hit_count) | |
31f56a27 YQ |
6269 | { |
6270 | /* FIXME should make an annotation for this. */ | |
6271 | if (is_catchpoint (b)) | |
112e8700 | 6272 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6273 | else if (is_tracepoint (b)) |
112e8700 | 6274 | uiout->text ("\ttracepoint"); |
31f56a27 | 6275 | else |
112e8700 SM |
6276 | uiout->text ("\tbreakpoint"); |
6277 | uiout->text (" already hit "); | |
381befee | 6278 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6279 | if (b->hit_count == 1) |
112e8700 | 6280 | uiout->text (" time\n"); |
31f56a27 | 6281 | else |
112e8700 | 6282 | uiout->text (" times\n"); |
31f56a27 | 6283 | } |
556ec64d YQ |
6284 | else |
6285 | { | |
31f56a27 | 6286 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6287 | if (uiout->is_mi_like_p ()) |
381befee | 6288 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6289 | } |
6290 | } | |
8b93c638 | 6291 | |
0d381245 | 6292 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6293 | { |
6294 | annotate_field (8); | |
6a831f06 PA |
6295 | uiout->message ("\tignore next %pF hits\n", |
6296 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6297 | } |
059fb39f | 6298 | |
816338b5 SS |
6299 | /* Note that an enable count of 1 corresponds to "enable once" |
6300 | behavior, which is reported by the combination of enablement and | |
6301 | disposition, so we don't need to mention it here. */ | |
6302 | if (!part_of_multiple && b->enable_count > 1) | |
6303 | { | |
6304 | annotate_field (8); | |
112e8700 | 6305 | uiout->text ("\tdisable after "); |
816338b5 SS |
6306 | /* Tweak the wording to clarify that ignore and enable counts |
6307 | are distinct, and have additive effect. */ | |
6308 | if (b->ignore_count) | |
112e8700 | 6309 | uiout->text ("additional "); |
816338b5 | 6310 | else |
112e8700 | 6311 | uiout->text ("next "); |
381befee | 6312 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6313 | uiout->text (" hits\n"); |
816338b5 SS |
6314 | } |
6315 | ||
f196051f SS |
6316 | if (!part_of_multiple && is_tracepoint (b)) |
6317 | { | |
6318 | struct tracepoint *tp = (struct tracepoint *) b; | |
6319 | ||
6320 | if (tp->traceframe_usage) | |
6321 | { | |
112e8700 | 6322 | uiout->text ("\ttrace buffer usage "); |
381befee | 6323 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6324 | uiout->text (" bytes\n"); |
f196051f SS |
6325 | } |
6326 | } | |
d3ce09f5 | 6327 | |
d1b0a7bf | 6328 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6329 | if (!part_of_multiple && l) |
c4093a6a JM |
6330 | { |
6331 | annotate_field (9); | |
2e783024 | 6332 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6333 | print_command_lines (uiout, l, 4); |
c4093a6a | 6334 | } |
d24317b4 | 6335 | |
d9b3f62e | 6336 | if (is_tracepoint (b)) |
1042e4c0 | 6337 | { |
d9b3f62e PA |
6338 | struct tracepoint *t = (struct tracepoint *) b; |
6339 | ||
6340 | if (!part_of_multiple && t->pass_count) | |
6341 | { | |
6342 | annotate_field (10); | |
112e8700 | 6343 | uiout->text ("\tpass count "); |
381befee | 6344 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6345 | uiout->text (" \n"); |
d9b3f62e | 6346 | } |
f2a8bc8a YQ |
6347 | |
6348 | /* Don't display it when tracepoint or tracepoint location is | |
6349 | pending. */ | |
6350 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6351 | { | |
6352 | annotate_field (11); | |
6353 | ||
112e8700 SM |
6354 | if (uiout->is_mi_like_p ()) |
6355 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6356 | loc->inserted ? "y" : "n"); |
6357 | else | |
6358 | { | |
6359 | if (loc->inserted) | |
112e8700 | 6360 | uiout->text ("\t"); |
f2a8bc8a | 6361 | else |
112e8700 SM |
6362 | uiout->text ("\tnot "); |
6363 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6364 | } |
6365 | } | |
1042e4c0 SS |
6366 | } |
6367 | ||
112e8700 | 6368 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6369 | { |
3a5c3e22 PA |
6370 | if (is_watchpoint (b)) |
6371 | { | |
6372 | struct watchpoint *w = (struct watchpoint *) b; | |
6373 | ||
112e8700 | 6374 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6375 | } |
f00aae0f | 6376 | else if (b->location != NULL |
d28cd78a | 6377 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6378 | uiout->field_string ("original-location", |
d28cd78a | 6379 | event_location_to_string (b->location.get ())); |
d24317b4 | 6380 | } |
c4093a6a | 6381 | } |
c5aa993b | 6382 | |
13674803 SM |
6383 | /* See breakpoint.h. */ |
6384 | ||
6385 | bool fix_multi_location_breakpoint_output_globally = false; | |
6386 | ||
0d381245 VP |
6387 | static void |
6388 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6389 | struct bp_location **last_loc, |
6c95b8df | 6390 | int allflag) |
0d381245 | 6391 | { |
79a45e25 | 6392 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6393 | bool use_fixed_output |
6394 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6395 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6396 | |
b4be1b06 | 6397 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6398 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6399 | |
b4be1b06 SM |
6400 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6401 | are outside. */ | |
6402 | if (!use_fixed_output) | |
6403 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6404 | |
6405 | /* If this breakpoint has custom print function, | |
6406 | it's already printed. Otherwise, print individual | |
6407 | locations, if any. */ | |
a38118e5 PA |
6408 | if (b->ops == NULL |
6409 | || b->ops->print_one == NULL | |
6410 | || allflag) | |
0d381245 | 6411 | { |
4a64f543 MS |
6412 | /* If breakpoint has a single location that is disabled, we |
6413 | print it as if it had several locations, since otherwise it's | |
6414 | hard to represent "breakpoint enabled, location disabled" | |
6415 | situation. | |
6416 | ||
6417 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6418 | internally, that's not a property exposed to users. |
6419 | ||
6420 | Likewise, while catchpoints may be implemented with | |
6421 | breakpoints (e.g., catch throw), that's not a property | |
6422 | exposed to users. We do however display the internal | |
6423 | breakpoint locations with "maint info breakpoints". */ | |
6424 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6425 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6426 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6427 | && (allflag |
b5fa468f TBA |
6428 | || (b->loc && (b->loc->next |
6429 | || !b->loc->enabled | |
6430 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6431 | { |
b4be1b06 SM |
6432 | gdb::optional<ui_out_emit_list> locations_list; |
6433 | ||
6434 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6435 | MI record. For later versions, place breakpoint locations in a | |
6436 | list. */ | |
6437 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6438 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6439 | |
b4be1b06 | 6440 | int n = 1; |
40cb8ca5 | 6441 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6442 | { |
b4be1b06 | 6443 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6444 | print_one_breakpoint_location (b, loc, n, last_loc, |
6445 | allflag, allflag); | |
40cb8ca5 | 6446 | n++; |
8d3788bd | 6447 | } |
0d381245 VP |
6448 | } |
6449 | } | |
6450 | } | |
6451 | ||
a6d9a66e UW |
6452 | static int |
6453 | breakpoint_address_bits (struct breakpoint *b) | |
6454 | { | |
6455 | int print_address_bits = 0; | |
a6d9a66e | 6456 | |
c6d81124 PA |
6457 | /* Software watchpoints that aren't watching memory don't have an |
6458 | address to print. */ | |
6459 | if (is_no_memory_software_watchpoint (b)) | |
6460 | return 0; | |
6461 | ||
40cb8ca5 | 6462 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6463 | { |
c7437ca6 PA |
6464 | int addr_bit; |
6465 | ||
c7437ca6 | 6466 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6467 | if (addr_bit > print_address_bits) |
6468 | print_address_bits = addr_bit; | |
6469 | } | |
6470 | ||
6471 | return print_address_bits; | |
6472 | } | |
0d381245 | 6473 | |
65630365 | 6474 | /* See breakpoint.h. */ |
c5aa993b | 6475 | |
65630365 PA |
6476 | void |
6477 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6478 | { |
a6d9a66e | 6479 | struct bp_location *dummy_loc = NULL; |
65630365 | 6480 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6481 | } |
c5aa993b | 6482 | |
09d682a4 TT |
6483 | /* Return true if this breakpoint was set by the user, false if it is |
6484 | internal or momentary. */ | |
6485 | ||
6486 | int | |
6487 | user_breakpoint_p (struct breakpoint *b) | |
6488 | { | |
46c6471b | 6489 | return b->number > 0; |
09d682a4 TT |
6490 | } |
6491 | ||
93daf339 TT |
6492 | /* See breakpoint.h. */ |
6493 | ||
6494 | int | |
6495 | pending_breakpoint_p (struct breakpoint *b) | |
6496 | { | |
6497 | return b->loc == NULL; | |
6498 | } | |
6499 | ||
5c458ae8 SM |
6500 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6501 | ||
6502 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6503 | understood by number_or_range_parser. Only breakpoints included in this | |
6504 | list are then printed. | |
6505 | ||
6506 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6507 | ||
6508 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6509 | ones for which it returns true. | |
6510 | ||
6511 | Return the total number of breakpoints listed. */ | |
c906108c | 6512 | |
d77f58be | 6513 | static int |
5c458ae8 | 6514 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6515 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6516 | { |
a6d9a66e | 6517 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6518 | int nr_printable_breakpoints; |
79a45b7d | 6519 | struct value_print_options opts; |
a6d9a66e | 6520 | int print_address_bits = 0; |
269b11a2 | 6521 | int print_type_col_width = 14; |
79a45e25 | 6522 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6523 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6524 | |
79a45b7d TT |
6525 | get_user_print_options (&opts); |
6526 | ||
4a64f543 MS |
6527 | /* Compute the number of rows in the table, as well as the size |
6528 | required for address fields. */ | |
7f3b0473 | 6529 | nr_printable_breakpoints = 0; |
43892fdf | 6530 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6531 | { |
6532 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6533 | if (filter && !filter (b)) | |
6534 | continue; | |
6535 | ||
5c458ae8 | 6536 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6537 | accept. Skip the others. */ |
5c458ae8 | 6538 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6539 | { |
5c458ae8 | 6540 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6541 | continue; |
5c458ae8 | 6542 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6543 | continue; |
6544 | } | |
269b11a2 | 6545 | |
5c458ae8 | 6546 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6547 | { |
6548 | int addr_bit, type_len; | |
a6d9a66e | 6549 | |
e5a67952 MS |
6550 | addr_bit = breakpoint_address_bits (b); |
6551 | if (addr_bit > print_address_bits) | |
6552 | print_address_bits = addr_bit; | |
269b11a2 | 6553 | |
e5a67952 MS |
6554 | type_len = strlen (bptype_string (b->type)); |
6555 | if (type_len > print_type_col_width) | |
6556 | print_type_col_width = type_len; | |
6557 | ||
6558 | nr_printable_breakpoints++; | |
6559 | } | |
6560 | } | |
7f3b0473 | 6561 | |
4a2b031d TT |
6562 | { |
6563 | ui_out_emit_table table_emitter (uiout, | |
6564 | opts.addressprint ? 6 : 5, | |
6565 | nr_printable_breakpoints, | |
6566 | "BreakpointTable"); | |
6567 | ||
6568 | if (nr_printable_breakpoints > 0) | |
6569 | annotate_breakpoints_headers (); | |
6570 | if (nr_printable_breakpoints > 0) | |
6571 | annotate_field (0); | |
6572 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6573 | if (nr_printable_breakpoints > 0) | |
6574 | annotate_field (1); | |
6575 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6576 | if (nr_printable_breakpoints > 0) | |
6577 | annotate_field (2); | |
6578 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6579 | if (nr_printable_breakpoints > 0) | |
6580 | annotate_field (3); | |
6581 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6582 | if (opts.addressprint) | |
6583 | { | |
6584 | if (nr_printable_breakpoints > 0) | |
6585 | annotate_field (4); | |
6586 | if (print_address_bits <= 32) | |
6587 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6588 | else | |
6589 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6590 | } | |
6591 | if (nr_printable_breakpoints > 0) | |
6592 | annotate_field (5); | |
6593 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6594 | uiout->table_body (); | |
6595 | if (nr_printable_breakpoints > 0) | |
6596 | annotate_breakpoints_table (); | |
6597 | ||
43892fdf | 6598 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6599 | { |
6600 | QUIT; | |
6601 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6602 | if (filter && !filter (b)) | |
6603 | continue; | |
e5a67952 | 6604 | |
5c458ae8 | 6605 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6606 | accept. Skip the others. */ |
e5a67952 | 6607 | |
5c458ae8 | 6608 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6609 | { |
5c458ae8 | 6610 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6611 | { |
5c458ae8 | 6612 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6613 | continue; |
6614 | } | |
6615 | else /* all others */ | |
6616 | { | |
5c458ae8 | 6617 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6618 | continue; |
6619 | } | |
6620 | } | |
6621 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6622 | show_internal is set. */ |
6623 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6624 | { |
6625 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6626 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6627 | if (loc->disabled_by_cond) |
6628 | has_disabled_by_cond_location = true; | |
6629 | } | |
4a2b031d TT |
6630 | } |
6631 | } | |
698384cd | 6632 | |
7f3b0473 | 6633 | if (nr_printable_breakpoints == 0) |
c906108c | 6634 | { |
4a64f543 MS |
6635 | /* If there's a filter, let the caller decide how to report |
6636 | empty list. */ | |
d77f58be SS |
6637 | if (!filter) |
6638 | { | |
5c458ae8 | 6639 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6640 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6641 | else |
112e8700 | 6642 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6643 | bp_num_list); |
d77f58be | 6644 | } |
c906108c SS |
6645 | } |
6646 | else | |
c4093a6a | 6647 | { |
a6d9a66e UW |
6648 | if (last_loc && !server_command) |
6649 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6650 | |
85c88e2a | 6651 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6652 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6653 | "location.\n")); | |
c4093a6a | 6654 | } |
c906108c | 6655 | |
4a64f543 | 6656 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6657 | there have been breakpoints? */ |
c906108c | 6658 | annotate_breakpoints_table_end (); |
d77f58be SS |
6659 | |
6660 | return nr_printable_breakpoints; | |
c906108c SS |
6661 | } |
6662 | ||
ad443146 SS |
6663 | /* Display the value of default-collect in a way that is generally |
6664 | compatible with the breakpoint list. */ | |
6665 | ||
6666 | static void | |
6667 | default_collect_info (void) | |
6668 | { | |
79a45e25 PA |
6669 | struct ui_out *uiout = current_uiout; |
6670 | ||
ad443146 SS |
6671 | /* If it has no value (which is frequently the case), say nothing; a |
6672 | message like "No default-collect." gets in user's face when it's | |
6673 | not wanted. */ | |
6674 | if (!*default_collect) | |
6675 | return; | |
6676 | ||
6677 | /* The following phrase lines up nicely with per-tracepoint collect | |
6678 | actions. */ | |
112e8700 SM |
6679 | uiout->text ("default collect "); |
6680 | uiout->field_string ("default-collect", default_collect); | |
6681 | uiout->text (" \n"); | |
ad443146 SS |
6682 | } |
6683 | ||
c906108c | 6684 | static void |
0b39b52e | 6685 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6686 | { |
5c458ae8 | 6687 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6688 | |
6689 | default_collect_info (); | |
d77f58be SS |
6690 | } |
6691 | ||
6692 | static void | |
1d12d88f | 6693 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6694 | { |
5c458ae8 | 6695 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6696 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6697 | |
6698 | if (num_printed == 0) | |
6699 | { | |
e5a67952 | 6700 | if (args == NULL || *args == '\0') |
112e8700 | 6701 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6702 | else |
112e8700 | 6703 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6704 | } |
c906108c SS |
6705 | } |
6706 | ||
7a292a7a | 6707 | static void |
4495129a | 6708 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6709 | { |
5c458ae8 | 6710 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6711 | |
6712 | default_collect_info (); | |
c906108c SS |
6713 | } |
6714 | ||
0d381245 | 6715 | static int |
714835d5 | 6716 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6717 | struct program_space *pspace, |
714835d5 | 6718 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 6719 | { |
40cb8ca5 | 6720 | for (bp_location *bl : b->locations ()) |
0d381245 | 6721 | { |
6c95b8df PA |
6722 | if (bl->pspace == pspace |
6723 | && bl->address == pc | |
0d381245 VP |
6724 | && (!overlay_debugging || bl->section == section)) |
6725 | return 1; | |
6726 | } | |
6727 | return 0; | |
6728 | } | |
6729 | ||
672f9b60 | 6730 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6731 | concerns with logical breakpoints, so we match program spaces, not |
6732 | address spaces. */ | |
c906108c SS |
6733 | |
6734 | static void | |
6c95b8df PA |
6735 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6736 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6737 | struct obj_section *section, int thread) |
c906108c | 6738 | { |
52f0bd74 | 6739 | int others = 0; |
c906108c | 6740 | |
43892fdf | 6741 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6742 | others += (user_breakpoint_p (b) |
dda83cd7 | 6743 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 6744 | |
c906108c SS |
6745 | if (others > 0) |
6746 | { | |
a3f17187 AC |
6747 | if (others == 1) |
6748 | printf_filtered (_("Note: breakpoint ")); | |
6749 | else /* if (others == ???) */ | |
6750 | printf_filtered (_("Note: breakpoints ")); | |
43892fdf | 6751 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6752 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6753 | { |
6754 | others--; | |
6755 | printf_filtered ("%d", b->number); | |
6756 | if (b->thread == -1 && thread != -1) | |
6757 | printf_filtered (" (all threads)"); | |
6758 | else if (b->thread != -1) | |
6759 | printf_filtered (" (thread %d)", b->thread); | |
6760 | printf_filtered ("%s%s ", | |
059fb39f | 6761 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6762 | || b->enable_state == bp_call_disabled) |
0d381245 | 6763 | ? " (disabled)" |
0d381245 VP |
6764 | : ""), |
6765 | (others > 1) ? "," | |
6766 | : ((others == 1) ? " and" : "")); | |
6767 | } | |
6a831f06 PA |
6768 | current_uiout->message (_("also set at pc %ps.\n"), |
6769 | styled_string (address_style.style (), | |
6770 | paddress (gdbarch, pc))); | |
c906108c SS |
6771 | } |
6772 | } | |
6773 | \f | |
c906108c | 6774 | |
cb1e4e32 PA |
6775 | /* Return true iff it is meaningful to use the address member of LOC. |
6776 | For some breakpoint types, the locations' address members are | |
6777 | irrelevant and it makes no sense to attempt to compare them to | |
6778 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6779 | |
cb1e4e32 PA |
6780 | More specifically, software watchpoints and catchpoints that are |
6781 | not backed by breakpoints always have a zero valued location | |
6782 | address and we don't want to mark breakpoints of any of these types | |
6783 | to be a duplicate of an actual breakpoint location at address | |
6784 | zero. */ | |
e4f237da | 6785 | |
cb1e4e32 PA |
6786 | static bool |
6787 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6788 | { |
cb1e4e32 | 6789 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6790 | } |
6791 | ||
6792 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6793 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6794 | ||
6795 | static int | |
4a64f543 MS |
6796 | watchpoint_locations_match (struct bp_location *loc1, |
6797 | struct bp_location *loc2) | |
2d134ed3 | 6798 | { |
3a5c3e22 PA |
6799 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6800 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6801 | ||
6802 | /* Both of them must exist. */ | |
6803 | gdb_assert (w1 != NULL); | |
6804 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6805 | |
4a64f543 MS |
6806 | /* If the target can evaluate the condition expression in hardware, |
6807 | then we we need to insert both watchpoints even if they are at | |
6808 | the same place. Otherwise the watchpoint will only trigger when | |
6809 | the condition of whichever watchpoint was inserted evaluates to | |
6810 | true, not giving a chance for GDB to check the condition of the | |
6811 | other watchpoint. */ | |
3a5c3e22 | 6812 | if ((w1->cond_exp |
4a64f543 MS |
6813 | && target_can_accel_watchpoint_condition (loc1->address, |
6814 | loc1->length, | |
0cf6dd15 | 6815 | loc1->watchpoint_type, |
4d01a485 | 6816 | w1->cond_exp.get ())) |
3a5c3e22 | 6817 | || (w2->cond_exp |
4a64f543 MS |
6818 | && target_can_accel_watchpoint_condition (loc2->address, |
6819 | loc2->length, | |
0cf6dd15 | 6820 | loc2->watchpoint_type, |
4d01a485 | 6821 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6822 | return 0; |
6823 | ||
85d721b8 PA |
6824 | /* Note that this checks the owner's type, not the location's. In |
6825 | case the target does not support read watchpoints, but does | |
6826 | support access watchpoints, we'll have bp_read_watchpoint | |
6827 | watchpoints with hw_access locations. Those should be considered | |
6828 | duplicates of hw_read locations. The hw_read locations will | |
6829 | become hw_access locations later. */ | |
2d134ed3 PA |
6830 | return (loc1->owner->type == loc2->owner->type |
6831 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6832 | && loc1->address == loc2->address | |
6833 | && loc1->length == loc2->length); | |
e4f237da KB |
6834 | } |
6835 | ||
31e77af2 | 6836 | /* See breakpoint.h. */ |
6c95b8df | 6837 | |
31e77af2 | 6838 | int |
accd0bcd YQ |
6839 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6840 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6841 | { |
f5656ead | 6842 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6843 | || aspace1 == aspace2) |
6844 | && addr1 == addr2); | |
6845 | } | |
6846 | ||
f1310107 TJB |
6847 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6848 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6849 | matches ASPACE2. On targets that have global breakpoints, the address | |
6850 | space doesn't really matter. */ | |
6851 | ||
6852 | static int | |
accd0bcd YQ |
6853 | breakpoint_address_match_range (const address_space *aspace1, |
6854 | CORE_ADDR addr1, | |
6855 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6856 | CORE_ADDR addr2) |
6857 | { | |
f5656ead | 6858 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6859 | || aspace1 == aspace2) |
6860 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6861 | } | |
6862 | ||
6863 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6864 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6865 | matches the breakpoint's address space. On targets that have global | |
6866 | breakpoints, the address space doesn't really matter. */ | |
6867 | ||
6868 | static int | |
6869 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6870 | const address_space *aspace, |
f1310107 TJB |
6871 | CORE_ADDR addr) |
6872 | { | |
6873 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6874 | aspace, addr) | |
6875 | || (bl->length | |
6876 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6877 | bl->address, bl->length, | |
6878 | aspace, addr))); | |
6879 | } | |
6880 | ||
d35ae833 PA |
6881 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6882 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6883 | match happens only if ASPACE matches the breakpoint's address | |
6884 | space. On targets that have global breakpoints, the address space | |
6885 | doesn't really matter. */ | |
6886 | ||
6887 | static int | |
6888 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6889 | const address_space *aspace, |
d35ae833 PA |
6890 | CORE_ADDR addr, int len) |
6891 | { | |
6892 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6893 | || bl->pspace->aspace == aspace) | |
6894 | { | |
6895 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6896 | ||
6897 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6898 | return 1; | |
6899 | } | |
6900 | return 0; | |
6901 | } | |
6902 | ||
1e4d1764 YQ |
6903 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6904 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6905 | true, otherwise returns false. */ | |
6906 | ||
6907 | static int | |
6908 | tracepoint_locations_match (struct bp_location *loc1, | |
6909 | struct bp_location *loc2) | |
6910 | { | |
6911 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6912 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6913 | locations at the same address of different tracepoints are regarded as | |
6914 | different locations. */ | |
6915 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6916 | else | |
6917 | return 0; | |
6918 | } | |
6919 | ||
2d134ed3 | 6920 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 6921 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
6922 | the same location. If SW_HW_BPS_MATCH is true, then software |
6923 | breakpoint locations and hardware breakpoint locations match, | |
6924 | otherwise they don't. */ | |
2d134ed3 PA |
6925 | |
6926 | static int | |
7f32a4d5 PA |
6927 | breakpoint_locations_match (struct bp_location *loc1, |
6928 | struct bp_location *loc2, | |
6929 | bool sw_hw_bps_match) | |
2d134ed3 | 6930 | { |
2bdf28a0 JK |
6931 | int hw_point1, hw_point2; |
6932 | ||
6933 | /* Both of them must not be in moribund_locations. */ | |
6934 | gdb_assert (loc1->owner != NULL); | |
6935 | gdb_assert (loc2->owner != NULL); | |
6936 | ||
6937 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6938 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6939 | |
6940 | if (hw_point1 != hw_point2) | |
6941 | return 0; | |
6942 | else if (hw_point1) | |
6943 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6944 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6945 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6946 | else |
7f32a4d5 PA |
6947 | /* We compare bp_location.length in order to cover ranged |
6948 | breakpoints. Keep this in sync with | |
6949 | bp_location_is_less_than. */ | |
f1310107 TJB |
6950 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
6951 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 6952 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 6953 | && loc1->length == loc2->length); |
2d134ed3 PA |
6954 | } |
6955 | ||
76897487 KB |
6956 | static void |
6957 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 6958 | int bnum, int have_bnum) |
76897487 | 6959 | { |
f63fbe86 MS |
6960 | /* The longest string possibly returned by hex_string_custom |
6961 | is 50 chars. These must be at least that big for safety. */ | |
6962 | char astr1[64]; | |
6963 | char astr2[64]; | |
76897487 | 6964 | |
bb599908 PH |
6965 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6966 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6967 | if (have_bnum) |
8a3fe4f8 | 6968 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 6969 | bnum, astr1, astr2); |
76897487 | 6970 | else |
8a3fe4f8 | 6971 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6972 | } |
6973 | ||
4a64f543 MS |
6974 | /* Adjust a breakpoint's address to account for architectural |
6975 | constraints on breakpoint placement. Return the adjusted address. | |
6976 | Note: Very few targets require this kind of adjustment. For most | |
6977 | targets, this function is simply the identity function. */ | |
76897487 KB |
6978 | |
6979 | static CORE_ADDR | |
a6d9a66e UW |
6980 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6981 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6982 | { |
a0de8c21 YQ |
6983 | if (bptype == bp_watchpoint |
6984 | || bptype == bp_hardware_watchpoint | |
6985 | || bptype == bp_read_watchpoint | |
6986 | || bptype == bp_access_watchpoint | |
6987 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6988 | { |
6989 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 6990 | have their addresses modified. */ |
88f7da05 KB |
6991 | return bpaddr; |
6992 | } | |
7c16b83e PA |
6993 | else if (bptype == bp_single_step) |
6994 | { | |
6995 | /* Single-step breakpoints should not have their addresses | |
6996 | modified. If there's any architectural constrain that | |
6997 | applies to this address, then it should have already been | |
6998 | taken into account when the breakpoint was created in the | |
6999 | first place. If we didn't do this, stepping through e.g., | |
7000 | Thumb-2 IT blocks would break. */ | |
7001 | return bpaddr; | |
7002 | } | |
76897487 KB |
7003 | else |
7004 | { | |
a0de8c21 YQ |
7005 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7006 | ||
7007 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7008 | { | |
7009 | /* Some targets have architectural constraints on the placement | |
7010 | of breakpoint instructions. Obtain the adjusted address. */ | |
7011 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7012 | } | |
76897487 | 7013 | |
a0de8c21 | 7014 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7015 | |
7016 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7017 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7018 | is required. */ |
7019 | if (adjusted_bpaddr != bpaddr) | |
7020 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7021 | ||
7022 | return adjusted_bpaddr; | |
7023 | } | |
7024 | } | |
7025 | ||
cb1e4e32 PA |
7026 | static bp_loc_type |
7027 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7028 | { |
cb1e4e32 | 7029 | switch (type) |
e049a4b5 DJ |
7030 | { |
7031 | case bp_breakpoint: | |
7c16b83e | 7032 | case bp_single_step: |
e049a4b5 DJ |
7033 | case bp_until: |
7034 | case bp_finish: | |
7035 | case bp_longjmp: | |
7036 | case bp_longjmp_resume: | |
e2e4d78b | 7037 | case bp_longjmp_call_dummy: |
186c406b TT |
7038 | case bp_exception: |
7039 | case bp_exception_resume: | |
e049a4b5 | 7040 | case bp_step_resume: |
2c03e5be | 7041 | case bp_hp_step_resume: |
e049a4b5 DJ |
7042 | case bp_watchpoint_scope: |
7043 | case bp_call_dummy: | |
aa7d318d | 7044 | case bp_std_terminate: |
e049a4b5 DJ |
7045 | case bp_shlib_event: |
7046 | case bp_thread_event: | |
7047 | case bp_overlay_event: | |
4efc6507 | 7048 | case bp_jit_event: |
0fd8e87f | 7049 | case bp_longjmp_master: |
aa7d318d | 7050 | case bp_std_terminate_master: |
186c406b | 7051 | case bp_exception_master: |
0e30163f JK |
7052 | case bp_gnu_ifunc_resolver: |
7053 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7054 | case bp_dprintf: |
cb1e4e32 | 7055 | return bp_loc_software_breakpoint; |
e049a4b5 | 7056 | case bp_hardware_breakpoint: |
cb1e4e32 | 7057 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7058 | case bp_hardware_watchpoint: |
7059 | case bp_read_watchpoint: | |
7060 | case bp_access_watchpoint: | |
cb1e4e32 | 7061 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7062 | case bp_watchpoint: |
ce78b96d | 7063 | case bp_catchpoint: |
15c3d785 PA |
7064 | case bp_tracepoint: |
7065 | case bp_fast_tracepoint: | |
0fb4aa4b | 7066 | case bp_static_tracepoint: |
cb1e4e32 | 7067 | return bp_loc_other; |
e049a4b5 | 7068 | default: |
e2e0b3e5 | 7069 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7070 | } |
cb1e4e32 PA |
7071 | } |
7072 | ||
7073 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7074 | { | |
7075 | this->owner = owner; | |
7076 | this->cond_bytecode = NULL; | |
7077 | this->shlib_disabled = 0; | |
7078 | this->enabled = 1; | |
b5fa468f | 7079 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7080 | |
7081 | this->loc_type = type; | |
e049a4b5 | 7082 | |
cb1e4e32 PA |
7083 | if (this->loc_type == bp_loc_software_breakpoint |
7084 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7085 | mark_breakpoint_location_modified (this); | |
7086 | ||
b6433ede | 7087 | incref (); |
cb1e4e32 PA |
7088 | } |
7089 | ||
7090 | bp_location::bp_location (breakpoint *owner) | |
7091 | : bp_location::bp_location (owner, | |
7092 | bp_location_from_bp_type (owner->type)) | |
7093 | { | |
28010a5d PA |
7094 | } |
7095 | ||
7096 | /* Allocate a struct bp_location. */ | |
7097 | ||
7098 | static struct bp_location * | |
7099 | allocate_bp_location (struct breakpoint *bpt) | |
7100 | { | |
348d480f PA |
7101 | return bpt->ops->allocate_location (bpt); |
7102 | } | |
7cc221ef | 7103 | |
f431efe5 PA |
7104 | /* Decrement reference count. If the reference count reaches 0, |
7105 | destroy the bp_location. Sets *BLP to NULL. */ | |
7106 | ||
7107 | static void | |
7108 | decref_bp_location (struct bp_location **blp) | |
7109 | { | |
b6433ede | 7110 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7111 | *blp = NULL; |
7112 | } | |
7113 | ||
346774a9 | 7114 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7115 | |
b270e6f9 TT |
7116 | static breakpoint * |
7117 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7118 | { |
346774a9 | 7119 | struct breakpoint *b1; |
b270e6f9 | 7120 | struct breakpoint *result = b.get (); |
c906108c | 7121 | |
346774a9 PA |
7122 | /* Add this breakpoint to the end of the chain so that a list of |
7123 | breakpoints will come out in order of increasing numbers. */ | |
7124 | ||
7125 | b1 = breakpoint_chain; | |
7126 | if (b1 == 0) | |
b270e6f9 | 7127 | breakpoint_chain = b.release (); |
346774a9 PA |
7128 | else |
7129 | { | |
7130 | while (b1->next) | |
7131 | b1 = b1->next; | |
b270e6f9 | 7132 | b1->next = b.release (); |
346774a9 | 7133 | } |
b270e6f9 TT |
7134 | |
7135 | return result; | |
346774a9 PA |
7136 | } |
7137 | ||
7138 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7139 | ||
7140 | static void | |
7141 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7142 | struct gdbarch *gdbarch, | |
28010a5d | 7143 | enum bptype bptype, |
c0a91b2b | 7144 | const struct breakpoint_ops *ops) |
346774a9 | 7145 | { |
348d480f PA |
7146 | gdb_assert (ops != NULL); |
7147 | ||
28010a5d | 7148 | b->ops = ops; |
4d28f7a8 | 7149 | b->type = bptype; |
a6d9a66e | 7150 | b->gdbarch = gdbarch; |
c906108c SS |
7151 | b->language = current_language->la_language; |
7152 | b->input_radix = input_radix; | |
d0fb5eae | 7153 | b->related_breakpoint = b; |
346774a9 PA |
7154 | } |
7155 | ||
7156 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7157 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7158 | |
7159 | static struct breakpoint * | |
7160 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7161 | enum bptype bptype, |
c0a91b2b | 7162 | const struct breakpoint_ops *ops) |
346774a9 | 7163 | { |
3b0871f4 | 7164 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7165 | |
3b0871f4 | 7166 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7167 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7168 | } |
7169 | ||
0ba852ab | 7170 | /* Initialize loc->function_name. */ |
0e30163f | 7171 | |
0d381245 | 7172 | static void |
0ba852ab | 7173 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7174 | { |
2bdf28a0 JK |
7175 | gdb_assert (loc->owner != NULL); |
7176 | ||
0d381245 | 7177 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7178 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7179 | || is_tracepoint (loc->owner)) |
0d381245 | 7180 | { |
2c02bd72 | 7181 | const char *function_name; |
0e30163f | 7182 | |
3467ec66 | 7183 | if (loc->msymbol != NULL |
f50776aa | 7184 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7185 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7186 | { |
7187 | struct breakpoint *b = loc->owner; | |
7188 | ||
c9d95fa3 | 7189 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7190 | |
7191 | if (b->type == bp_breakpoint && b->loc == loc | |
7192 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7193 | { |
7194 | /* Create only the whole new breakpoint of this type but do not | |
7195 | mess more complicated breakpoints with multiple locations. */ | |
7196 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7197 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7198 | breakpoint. */ |
3467ec66 | 7199 | loc->related_address = loc->address; |
0e30163f JK |
7200 | } |
7201 | } | |
3467ec66 PA |
7202 | else |
7203 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7204 | |
2c02bd72 DE |
7205 | if (function_name) |
7206 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7207 | } |
7208 | } | |
7209 | ||
a6d9a66e | 7210 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7211 | struct gdbarch * |
a6d9a66e UW |
7212 | get_sal_arch (struct symtab_and_line sal) |
7213 | { | |
7214 | if (sal.section) | |
08feed99 | 7215 | return sal.section->objfile->arch (); |
a6d9a66e | 7216 | if (sal.symtab) |
08feed99 | 7217 | return SYMTAB_OBJFILE (sal.symtab)->arch (); |
a6d9a66e UW |
7218 | |
7219 | return NULL; | |
7220 | } | |
7221 | ||
346774a9 PA |
7222 | /* Low level routine for partially initializing a breakpoint of type |
7223 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7224 | file name, and line number are provided by SAL. |
0d381245 VP |
7225 | |
7226 | It is expected that the caller will complete the initialization of | |
7227 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7228 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7229 | |
346774a9 PA |
7230 | static void |
7231 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7232 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7233 | const struct breakpoint_ops *ops) |
0d381245 | 7234 | { |
28010a5d | 7235 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7236 | |
3742cc8b | 7237 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7238 | |
6c95b8df PA |
7239 | if (bptype != bp_catchpoint) |
7240 | gdb_assert (sal.pspace != NULL); | |
7241 | ||
f8eba3c6 TT |
7242 | /* Store the program space that was used to set the breakpoint, |
7243 | except for ordinary breakpoints, which are independent of the | |
7244 | program space. */ | |
7245 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7246 | b->pspace = sal.pspace; | |
346774a9 | 7247 | } |
c906108c | 7248 | |
346774a9 PA |
7249 | /* set_raw_breakpoint is a low level routine for allocating and |
7250 | partially initializing a breakpoint of type BPTYPE. The newly | |
7251 | created breakpoint's address, section, source file name, and line | |
7252 | number are provided by SAL. The newly created and partially | |
7253 | initialized breakpoint is added to the breakpoint chain and | |
7254 | is also returned as the value of this function. | |
7255 | ||
7256 | It is expected that the caller will complete the initialization of | |
7257 | the newly created breakpoint struct as well as output any status | |
7258 | information regarding the creation of a new breakpoint. In | |
7259 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7260 | number! Care should be taken to not allow an error to occur | |
7261 | prior to completing the initialization of the breakpoint. If this | |
7262 | should happen, a bogus breakpoint will be left on the chain. */ | |
7263 | ||
7264 | struct breakpoint * | |
7265 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7266 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7267 | const struct breakpoint_ops *ops) |
346774a9 | 7268 | { |
3b0871f4 | 7269 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7270 | |
3b0871f4 | 7271 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7272 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7273 | } |
7274 | ||
53a5351d | 7275 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7276 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7277 | initiated the operation. */ | |
c906108c SS |
7278 | |
7279 | void | |
186c406b | 7280 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7281 | { |
5d5658a1 | 7282 | int thread = tp->global_num; |
0fd8e87f UW |
7283 | |
7284 | /* To avoid having to rescan all objfile symbols at every step, | |
7285 | we maintain a list of continually-inserted but always disabled | |
7286 | longjmp "master" breakpoints. Here, we simply create momentary | |
7287 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7288 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7289 | if (b->pspace == current_program_space |
186c406b TT |
7290 | && (b->type == bp_longjmp_master |
7291 | || b->type == bp_exception_master)) | |
0fd8e87f | 7292 | { |
06edf0c0 PA |
7293 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7294 | struct breakpoint *clone; | |
cc59ec59 | 7295 | |
e2e4d78b JK |
7296 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7297 | after their removal. */ | |
06edf0c0 | 7298 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7299 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7300 | clone->thread = thread; |
7301 | } | |
186c406b TT |
7302 | |
7303 | tp->initiating_frame = frame; | |
c906108c SS |
7304 | } |
7305 | ||
611c83ae | 7306 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7307 | void |
611c83ae | 7308 | delete_longjmp_breakpoint (int thread) |
c906108c | 7309 | { |
1428b37a | 7310 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7311 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7312 | { |
7313 | if (b->thread == thread) | |
7314 | delete_breakpoint (b); | |
7315 | } | |
c906108c SS |
7316 | } |
7317 | ||
f59f708a PA |
7318 | void |
7319 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7320 | { | |
1428b37a | 7321 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7322 | if (b->type == bp_longjmp || b->type == bp_exception) |
7323 | { | |
7324 | if (b->thread == thread) | |
7325 | b->disposition = disp_del_at_next_stop; | |
7326 | } | |
7327 | } | |
7328 | ||
e2e4d78b JK |
7329 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7330 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7331 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7332 | breakpoints. */ | |
7333 | ||
7334 | struct breakpoint * | |
7335 | set_longjmp_breakpoint_for_call_dummy (void) | |
7336 | { | |
43892fdf | 7337 | breakpoint *retval = nullptr; |
e2e4d78b | 7338 | |
43892fdf | 7339 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7340 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7341 | { | |
7342 | struct breakpoint *new_b; | |
7343 | ||
7344 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7345 | &momentary_breakpoint_ops, |
7346 | 1); | |
00431a78 | 7347 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7348 | |
7349 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7350 | ||
7351 | gdb_assert (new_b->related_breakpoint == new_b); | |
7352 | if (retval == NULL) | |
7353 | retval = new_b; | |
7354 | new_b->related_breakpoint = retval; | |
7355 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7356 | retval = retval->related_breakpoint; | |
7357 | retval->related_breakpoint = new_b; | |
7358 | } | |
7359 | ||
7360 | return retval; | |
7361 | } | |
7362 | ||
7363 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7364 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7365 | stack. |
7366 | ||
7367 | You should call this function only at places where it is safe to currently | |
7368 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7369 | frames. */ | |
7370 | ||
7371 | void | |
b67a2c6f | 7372 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7373 | { |
7374 | struct breakpoint *b, *b_tmp; | |
7375 | ||
7376 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7377 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7378 | { |
7379 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7380 | ||
7381 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7382 | dummy_b = dummy_b->related_breakpoint; | |
7383 | if (dummy_b->type != bp_call_dummy | |
7384 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7385 | continue; | |
7386 | ||
00431a78 | 7387 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7388 | |
7389 | while (b->related_breakpoint != b) | |
7390 | { | |
7391 | if (b_tmp == b->related_breakpoint) | |
7392 | b_tmp = b->related_breakpoint->next; | |
7393 | delete_breakpoint (b->related_breakpoint); | |
7394 | } | |
7395 | delete_breakpoint (b); | |
7396 | } | |
7397 | } | |
7398 | ||
1900040c MS |
7399 | void |
7400 | enable_overlay_breakpoints (void) | |
7401 | { | |
43892fdf | 7402 | for (breakpoint *b : all_breakpoints ()) |
1900040c MS |
7403 | if (b->type == bp_overlay_event) |
7404 | { | |
7405 | b->enable_state = bp_enabled; | |
44702360 | 7406 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7407 | overlay_events_enabled = 1; |
1900040c MS |
7408 | } |
7409 | } | |
7410 | ||
7411 | void | |
7412 | disable_overlay_breakpoints (void) | |
7413 | { | |
43892fdf | 7414 | for (breakpoint *b : all_breakpoints ()) |
1900040c MS |
7415 | if (b->type == bp_overlay_event) |
7416 | { | |
7417 | b->enable_state = bp_disabled; | |
44702360 | 7418 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7419 | overlay_events_enabled = 0; |
1900040c MS |
7420 | } |
7421 | } | |
7422 | ||
aa7d318d TT |
7423 | /* Set an active std::terminate breakpoint for each std::terminate |
7424 | master breakpoint. */ | |
7425 | void | |
7426 | set_std_terminate_breakpoint (void) | |
7427 | { | |
1428b37a | 7428 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7429 | if (b->pspace == current_program_space |
7430 | && b->type == bp_std_terminate_master) | |
7431 | { | |
06edf0c0 | 7432 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7433 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7434 | } |
7435 | } | |
7436 | ||
7437 | /* Delete all the std::terminate breakpoints. */ | |
7438 | void | |
7439 | delete_std_terminate_breakpoint (void) | |
7440 | { | |
1428b37a | 7441 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7442 | if (b->type == bp_std_terminate) |
7443 | delete_breakpoint (b); | |
7444 | } | |
7445 | ||
c4093a6a | 7446 | struct breakpoint * |
a6d9a66e | 7447 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7448 | { |
7449 | struct breakpoint *b; | |
c4093a6a | 7450 | |
06edf0c0 PA |
7451 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7452 | &internal_breakpoint_ops); | |
7453 | ||
b5de0fa7 | 7454 | b->enable_state = bp_enabled; |
f00aae0f | 7455 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7456 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7457 | |
44702360 | 7458 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7459 | |
c4093a6a JM |
7460 | return b; |
7461 | } | |
7462 | ||
0101ce28 JJ |
7463 | struct lang_and_radix |
7464 | { | |
7465 | enum language lang; | |
7466 | int radix; | |
7467 | }; | |
7468 | ||
4efc6507 DE |
7469 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7470 | ||
7471 | struct breakpoint * | |
7472 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7473 | { | |
2a7f3dff PA |
7474 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7475 | &internal_breakpoint_ops); | |
4efc6507 | 7476 | } |
0101ce28 | 7477 | |
03673fc7 PP |
7478 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7479 | ||
7480 | void | |
7481 | remove_jit_event_breakpoints (void) | |
7482 | { | |
1428b37a | 7483 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7484 | if (b->type == bp_jit_event |
7485 | && b->loc->pspace == current_program_space) | |
7486 | delete_breakpoint (b); | |
7487 | } | |
7488 | ||
cae688ec JJ |
7489 | void |
7490 | remove_solib_event_breakpoints (void) | |
7491 | { | |
1428b37a | 7492 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7493 | if (b->type == bp_shlib_event |
7494 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7495 | delete_breakpoint (b); |
7496 | } | |
7497 | ||
f37f681c PA |
7498 | /* See breakpoint.h. */ |
7499 | ||
7500 | void | |
7501 | remove_solib_event_breakpoints_at_next_stop (void) | |
7502 | { | |
1428b37a | 7503 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7504 | if (b->type == bp_shlib_event |
7505 | && b->loc->pspace == current_program_space) | |
7506 | b->disposition = disp_del_at_next_stop; | |
7507 | } | |
7508 | ||
04086b45 PA |
7509 | /* Helper for create_solib_event_breakpoint / |
7510 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7511 | INSERT_MODE to pass through to update_global_location_list. */ | |
7512 | ||
7513 | static struct breakpoint * | |
7514 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7515 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7516 | { |
7517 | struct breakpoint *b; | |
7518 | ||
06edf0c0 PA |
7519 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7520 | &internal_breakpoint_ops); | |
04086b45 | 7521 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7522 | return b; |
7523 | } | |
7524 | ||
04086b45 PA |
7525 | struct breakpoint * |
7526 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7527 | { | |
7528 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7529 | } | |
7530 | ||
f37f681c PA |
7531 | /* See breakpoint.h. */ |
7532 | ||
7533 | struct breakpoint * | |
7534 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7535 | { | |
7536 | struct breakpoint *b; | |
7537 | ||
04086b45 PA |
7538 | /* Explicitly tell update_global_location_list to insert |
7539 | locations. */ | |
7540 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7541 | if (!b->loc->inserted) |
7542 | { | |
7543 | delete_breakpoint (b); | |
7544 | return NULL; | |
7545 | } | |
7546 | return b; | |
7547 | } | |
7548 | ||
cae688ec JJ |
7549 | /* Disable any breakpoints that are on code in shared libraries. Only |
7550 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7551 | ||
7552 | void | |
cb851954 | 7553 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7554 | { |
48d7020b | 7555 | for (bp_location *loc : all_bp_locations ()) |
cae688ec | 7556 | { |
2bdf28a0 | 7557 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7558 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7559 | |
4a64f543 MS |
7560 | /* We apply the check to all breakpoints, including disabled for |
7561 | those with loc->duplicate set. This is so that when breakpoint | |
7562 | becomes enabled, or the duplicate is removed, gdb will try to | |
7563 | insert all breakpoints. If we don't set shlib_disabled here, | |
7564 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7565 | if (((b->type == bp_breakpoint) |
508ccb1f | 7566 | || (b->type == bp_jit_event) |
1042e4c0 | 7567 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7568 | || (is_tracepoint (b))) |
6c95b8df | 7569 | && loc->pspace == current_program_space |
0d381245 | 7570 | && !loc->shlib_disabled |
6c95b8df | 7571 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7572 | ) |
0d381245 VP |
7573 | { |
7574 | loc->shlib_disabled = 1; | |
7575 | } | |
cae688ec JJ |
7576 | } |
7577 | } | |
7578 | ||
63644780 NB |
7579 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7580 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7581 | disabled ones can just stay disabled. */ | |
84acb35a | 7582 | |
75149521 | 7583 | static void |
84acb35a JJ |
7584 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7585 | { | |
84acb35a JJ |
7586 | int disabled_shlib_breaks = 0; |
7587 | ||
48d7020b | 7588 | for (bp_location *loc : all_bp_locations ()) |
84acb35a | 7589 | { |
2bdf28a0 | 7590 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7591 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7592 | |
1e4d1764 | 7593 | if (solib->pspace == loc->pspace |
e2dd7057 | 7594 | && !loc->shlib_disabled |
1e4d1764 YQ |
7595 | && (((b->type == bp_breakpoint |
7596 | || b->type == bp_jit_event | |
7597 | || b->type == bp_hardware_breakpoint) | |
7598 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7599 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7600 | || is_tracepoint (b)) | |
e2dd7057 | 7601 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7602 | { |
e2dd7057 PP |
7603 | loc->shlib_disabled = 1; |
7604 | /* At this point, we cannot rely on remove_breakpoint | |
7605 | succeeding so we must mark the breakpoint as not inserted | |
7606 | to prevent future errors occurring in remove_breakpoints. */ | |
7607 | loc->inserted = 0; | |
8d3788bd VP |
7608 | |
7609 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7610 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7611 | |
e2dd7057 PP |
7612 | if (!disabled_shlib_breaks) |
7613 | { | |
223ffa71 | 7614 | target_terminal::ours_for_output (); |
3e43a32a MS |
7615 | warning (_("Temporarily disabling breakpoints " |
7616 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7617 | solib->so_name); |
84acb35a | 7618 | } |
e2dd7057 | 7619 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7620 | } |
7621 | } | |
84acb35a JJ |
7622 | } |
7623 | ||
63644780 NB |
7624 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7625 | notification of free_objfile. Only apply to enabled breakpoints, | |
7626 | disabled ones can just stay disabled. */ | |
7627 | ||
7628 | static void | |
7629 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7630 | { | |
63644780 NB |
7631 | if (objfile == NULL) |
7632 | return; | |
7633 | ||
d03de421 PA |
7634 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7635 | managed by the user with add-symbol-file/remove-symbol-file. | |
7636 | Similarly to how breakpoints in shared libraries are handled in | |
7637 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7638 | shlib_disabled so they end up uninserted on the next global |
7639 | location list update. Shared libraries not loaded by the user | |
7640 | aren't handled here -- they're already handled in | |
7641 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7642 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7643 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7644 | main objfile). */ | |
7645 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7646 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7647 | return; |
7648 | ||
43892fdf | 7649 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7650 | { |
63644780 NB |
7651 | int bp_modified = 0; |
7652 | ||
7653 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7654 | continue; | |
7655 | ||
40cb8ca5 | 7656 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7657 | { |
7658 | CORE_ADDR loc_addr = loc->address; | |
7659 | ||
7660 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7661 | && loc->loc_type != bp_loc_software_breakpoint) | |
7662 | continue; | |
7663 | ||
7664 | if (loc->shlib_disabled != 0) | |
7665 | continue; | |
7666 | ||
7667 | if (objfile->pspace != loc->pspace) | |
7668 | continue; | |
7669 | ||
7670 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7671 | && loc->loc_type != bp_loc_software_breakpoint) | |
7672 | continue; | |
7673 | ||
7674 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7675 | { | |
7676 | loc->shlib_disabled = 1; | |
08351840 PA |
7677 | /* At this point, we don't know whether the object was |
7678 | unmapped from the inferior or not, so leave the | |
7679 | inserted flag alone. We'll handle failure to | |
7680 | uninsert quietly, in case the object was indeed | |
7681 | unmapped. */ | |
63644780 NB |
7682 | |
7683 | mark_breakpoint_location_modified (loc); | |
7684 | ||
7685 | bp_modified = 1; | |
7686 | } | |
7687 | } | |
7688 | ||
7689 | if (bp_modified) | |
76727919 | 7690 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7691 | } |
7692 | } | |
7693 | ||
ce78b96d JB |
7694 | /* FORK & VFORK catchpoints. */ |
7695 | ||
e29a4733 | 7696 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7697 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7698 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7699 | |
c1fc2657 | 7700 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7701 | { |
e29a4733 PA |
7702 | /* Process id of a child process whose forking triggered this |
7703 | catchpoint. This field is only valid immediately after this | |
7704 | catchpoint has triggered. */ | |
7705 | ptid_t forked_inferior_pid; | |
7706 | }; | |
7707 | ||
4a64f543 MS |
7708 | /* Implement the "insert" breakpoint_ops method for fork |
7709 | catchpoints. */ | |
ce78b96d | 7710 | |
77b06cd7 TJB |
7711 | static int |
7712 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7713 | { |
e99b03dc | 7714 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7715 | } |
7716 | ||
4a64f543 MS |
7717 | /* Implement the "remove" breakpoint_ops method for fork |
7718 | catchpoints. */ | |
ce78b96d JB |
7719 | |
7720 | static int | |
73971819 | 7721 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7722 | { |
e99b03dc | 7723 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7724 | } |
7725 | ||
7726 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7727 | catchpoints. */ | |
7728 | ||
7729 | static int | |
f1310107 | 7730 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7731 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7732 | const struct target_waitstatus *ws) |
ce78b96d | 7733 | { |
e29a4733 PA |
7734 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7735 | ||
f90263c1 TT |
7736 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7737 | return 0; | |
7738 | ||
7739 | c->forked_inferior_pid = ws->value.related_pid; | |
7740 | return 1; | |
ce78b96d JB |
7741 | } |
7742 | ||
4a64f543 MS |
7743 | /* Implement the "print_it" breakpoint_ops method for fork |
7744 | catchpoints. */ | |
ce78b96d JB |
7745 | |
7746 | static enum print_stop_action | |
348d480f | 7747 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7748 | { |
36dfb11c | 7749 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7750 | struct breakpoint *b = bs->breakpoint_at; |
7751 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7752 | |
ce78b96d | 7753 | annotate_catchpoint (b->number); |
f303dbd6 | 7754 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7755 | if (b->disposition == disp_del) |
112e8700 | 7756 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7757 | else |
112e8700 SM |
7758 | uiout->text ("Catchpoint "); |
7759 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7760 | { |
112e8700 SM |
7761 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7762 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7763 | } |
381befee | 7764 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7765 | uiout->text (" (forked process "); |
381befee | 7766 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7767 | uiout->text ("), "); |
ce78b96d JB |
7768 | return PRINT_SRC_AND_LOC; |
7769 | } | |
7770 | ||
4a64f543 MS |
7771 | /* Implement the "print_one" breakpoint_ops method for fork |
7772 | catchpoints. */ | |
ce78b96d JB |
7773 | |
7774 | static void | |
a6d9a66e | 7775 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7776 | { |
e29a4733 | 7777 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7778 | struct value_print_options opts; |
79a45e25 | 7779 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7780 | |
7781 | get_user_print_options (&opts); | |
7782 | ||
4a64f543 MS |
7783 | /* Field 4, the address, is omitted (which makes the columns not |
7784 | line up too nicely with the headers, but the effect is relatively | |
7785 | readable). */ | |
79a45b7d | 7786 | if (opts.addressprint) |
112e8700 | 7787 | uiout->field_skip ("addr"); |
ce78b96d | 7788 | annotate_field (5); |
112e8700 | 7789 | uiout->text ("fork"); |
d7e15655 | 7790 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7791 | { |
112e8700 | 7792 | uiout->text (", process "); |
381befee | 7793 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7794 | uiout->spaces (1); |
ce78b96d | 7795 | } |
8ac3646f | 7796 | |
112e8700 SM |
7797 | if (uiout->is_mi_like_p ()) |
7798 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7799 | } |
7800 | ||
7801 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7802 | catchpoints. */ | |
7803 | ||
7804 | static void | |
7805 | print_mention_catch_fork (struct breakpoint *b) | |
7806 | { | |
7807 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7808 | } | |
7809 | ||
6149aea9 PA |
7810 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7811 | catchpoints. */ | |
7812 | ||
7813 | static void | |
7814 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7815 | { | |
7816 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7817 | print_recreate_thread (b, fp); |
6149aea9 PA |
7818 | } |
7819 | ||
ce78b96d JB |
7820 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7821 | ||
2060206e | 7822 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7823 | |
4a64f543 MS |
7824 | /* Implement the "insert" breakpoint_ops method for vfork |
7825 | catchpoints. */ | |
ce78b96d | 7826 | |
77b06cd7 TJB |
7827 | static int |
7828 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7829 | { |
e99b03dc | 7830 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7831 | } |
7832 | ||
4a64f543 MS |
7833 | /* Implement the "remove" breakpoint_ops method for vfork |
7834 | catchpoints. */ | |
ce78b96d JB |
7835 | |
7836 | static int | |
73971819 | 7837 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7838 | { |
e99b03dc | 7839 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7840 | } |
7841 | ||
7842 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7843 | catchpoints. */ | |
7844 | ||
7845 | static int | |
f1310107 | 7846 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7847 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7848 | const struct target_waitstatus *ws) |
ce78b96d | 7849 | { |
e29a4733 PA |
7850 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7851 | ||
f90263c1 TT |
7852 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7853 | return 0; | |
7854 | ||
7855 | c->forked_inferior_pid = ws->value.related_pid; | |
7856 | return 1; | |
ce78b96d JB |
7857 | } |
7858 | ||
4a64f543 MS |
7859 | /* Implement the "print_it" breakpoint_ops method for vfork |
7860 | catchpoints. */ | |
ce78b96d JB |
7861 | |
7862 | static enum print_stop_action | |
348d480f | 7863 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7864 | { |
36dfb11c | 7865 | struct ui_out *uiout = current_uiout; |
348d480f | 7866 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7867 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7868 | ||
ce78b96d | 7869 | annotate_catchpoint (b->number); |
f303dbd6 | 7870 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7871 | if (b->disposition == disp_del) |
112e8700 | 7872 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7873 | else |
112e8700 SM |
7874 | uiout->text ("Catchpoint "); |
7875 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7876 | { |
112e8700 SM |
7877 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7878 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7879 | } |
381befee | 7880 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7881 | uiout->text (" (vforked process "); |
381befee | 7882 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7883 | uiout->text ("), "); |
ce78b96d JB |
7884 | return PRINT_SRC_AND_LOC; |
7885 | } | |
7886 | ||
4a64f543 MS |
7887 | /* Implement the "print_one" breakpoint_ops method for vfork |
7888 | catchpoints. */ | |
ce78b96d JB |
7889 | |
7890 | static void | |
a6d9a66e | 7891 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7892 | { |
e29a4733 | 7893 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7894 | struct value_print_options opts; |
79a45e25 | 7895 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7896 | |
7897 | get_user_print_options (&opts); | |
4a64f543 MS |
7898 | /* Field 4, the address, is omitted (which makes the columns not |
7899 | line up too nicely with the headers, but the effect is relatively | |
7900 | readable). */ | |
79a45b7d | 7901 | if (opts.addressprint) |
112e8700 | 7902 | uiout->field_skip ("addr"); |
ce78b96d | 7903 | annotate_field (5); |
112e8700 | 7904 | uiout->text ("vfork"); |
d7e15655 | 7905 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7906 | { |
112e8700 | 7907 | uiout->text (", process "); |
381befee | 7908 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7909 | uiout->spaces (1); |
ce78b96d | 7910 | } |
8ac3646f | 7911 | |
112e8700 SM |
7912 | if (uiout->is_mi_like_p ()) |
7913 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7914 | } |
7915 | ||
7916 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7917 | catchpoints. */ | |
7918 | ||
7919 | static void | |
7920 | print_mention_catch_vfork (struct breakpoint *b) | |
7921 | { | |
7922 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7923 | } | |
7924 | ||
6149aea9 PA |
7925 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7926 | catchpoints. */ | |
7927 | ||
7928 | static void | |
7929 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7930 | { | |
7931 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7932 | print_recreate_thread (b, fp); |
6149aea9 PA |
7933 | } |
7934 | ||
ce78b96d JB |
7935 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7936 | ||
2060206e | 7937 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7938 | |
edcc5120 | 7939 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7940 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7941 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7942 | ||
c1fc2657 | 7943 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7944 | { |
c1fc2657 | 7945 | ~solib_catchpoint () override; |
edcc5120 TT |
7946 | |
7947 | /* True for "catch load", false for "catch unload". */ | |
b650a282 | 7948 | bool is_load; |
edcc5120 TT |
7949 | |
7950 | /* Regular expression to match, if any. COMPILED is only valid when | |
7951 | REGEX is non-NULL. */ | |
7952 | char *regex; | |
2d7cc5c7 | 7953 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7954 | }; |
7955 | ||
c1fc2657 | 7956 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7957 | { |
c1fc2657 | 7958 | xfree (this->regex); |
edcc5120 TT |
7959 | } |
7960 | ||
7961 | static int | |
7962 | insert_catch_solib (struct bp_location *ignore) | |
7963 | { | |
7964 | return 0; | |
7965 | } | |
7966 | ||
7967 | static int | |
73971819 | 7968 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7969 | { |
7970 | return 0; | |
7971 | } | |
7972 | ||
7973 | static int | |
7974 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7975 | const address_space *aspace, |
edcc5120 TT |
7976 | CORE_ADDR bp_addr, |
7977 | const struct target_waitstatus *ws) | |
7978 | { | |
7979 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
edcc5120 TT |
7980 | |
7981 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7982 | return 1; | |
7983 | ||
43892fdf | 7984 | for (breakpoint *other : all_breakpoints ()) |
edcc5120 | 7985 | { |
edcc5120 TT |
7986 | if (other == bl->owner) |
7987 | continue; | |
7988 | ||
7989 | if (other->type != bp_shlib_event) | |
7990 | continue; | |
7991 | ||
c1fc2657 | 7992 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7993 | continue; |
7994 | ||
40cb8ca5 | 7995 | for (bp_location *other_bl : other->locations ()) |
edcc5120 TT |
7996 | { |
7997 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7998 | return 1; | |
7999 | } | |
8000 | } | |
8001 | ||
8002 | return 0; | |
8003 | } | |
8004 | ||
8005 | static void | |
8006 | check_status_catch_solib (struct bpstats *bs) | |
8007 | { | |
8008 | struct solib_catchpoint *self | |
8009 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8010 | |
8011 | if (self->is_load) | |
8012 | { | |
52941706 | 8013 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
8014 | { |
8015 | if (!self->regex | |
2d7cc5c7 | 8016 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8017 | return; |
8018 | } | |
8019 | } | |
8020 | else | |
8021 | { | |
6fb16ce6 | 8022 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8023 | { |
8024 | if (!self->regex | |
6fb16ce6 | 8025 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8026 | return; |
8027 | } | |
8028 | } | |
8029 | ||
8030 | bs->stop = 0; | |
8031 | bs->print_it = print_it_noop; | |
8032 | } | |
8033 | ||
8034 | static enum print_stop_action | |
8035 | print_it_catch_solib (bpstat bs) | |
8036 | { | |
8037 | struct breakpoint *b = bs->breakpoint_at; | |
8038 | struct ui_out *uiout = current_uiout; | |
8039 | ||
8040 | annotate_catchpoint (b->number); | |
f303dbd6 | 8041 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8042 | if (b->disposition == disp_del) |
112e8700 | 8043 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8044 | else |
112e8700 | 8045 | uiout->text ("Catchpoint "); |
381befee | 8046 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8047 | uiout->text ("\n"); |
8048 | if (uiout->is_mi_like_p ()) | |
8049 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8050 | print_solib_event (1); |
8051 | return PRINT_SRC_AND_LOC; | |
8052 | } | |
8053 | ||
8054 | static void | |
8055 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8056 | { | |
8057 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8058 | struct value_print_options opts; | |
8059 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8060 | |
8061 | get_user_print_options (&opts); | |
8062 | /* Field 4, the address, is omitted (which makes the columns not | |
8063 | line up too nicely with the headers, but the effect is relatively | |
8064 | readable). */ | |
8065 | if (opts.addressprint) | |
8066 | { | |
8067 | annotate_field (4); | |
112e8700 | 8068 | uiout->field_skip ("addr"); |
edcc5120 TT |
8069 | } |
8070 | ||
528e1572 | 8071 | std::string msg; |
edcc5120 TT |
8072 | annotate_field (5); |
8073 | if (self->is_load) | |
8074 | { | |
8075 | if (self->regex) | |
528e1572 | 8076 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8077 | else |
528e1572 | 8078 | msg = _("load of library"); |
edcc5120 TT |
8079 | } |
8080 | else | |
8081 | { | |
8082 | if (self->regex) | |
528e1572 | 8083 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8084 | else |
528e1572 | 8085 | msg = _("unload of library"); |
edcc5120 | 8086 | } |
112e8700 | 8087 | uiout->field_string ("what", msg); |
8ac3646f | 8088 | |
112e8700 SM |
8089 | if (uiout->is_mi_like_p ()) |
8090 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8091 | } |
8092 | ||
8093 | static void | |
8094 | print_mention_catch_solib (struct breakpoint *b) | |
8095 | { | |
8096 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8097 | ||
8098 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8099 | self->is_load ? "load" : "unload"); | |
8100 | } | |
8101 | ||
8102 | static void | |
8103 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8104 | { | |
8105 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8106 | ||
8107 | fprintf_unfiltered (fp, "%s %s", | |
8108 | b->disposition == disp_del ? "tcatch" : "catch", | |
8109 | self->is_load ? "load" : "unload"); | |
8110 | if (self->regex) | |
8111 | fprintf_unfiltered (fp, " %s", self->regex); | |
8112 | fprintf_unfiltered (fp, "\n"); | |
8113 | } | |
8114 | ||
8115 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8116 | ||
b650a282 | 8117 | /* See breakpoint.h. */ |
edcc5120 | 8118 | |
91985142 | 8119 | void |
b650a282 | 8120 | add_solib_catchpoint (const char *arg, bool is_load, bool is_temp, bool enabled) |
edcc5120 | 8121 | { |
edcc5120 | 8122 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8123 | |
edcc5120 TT |
8124 | if (!arg) |
8125 | arg = ""; | |
f1735a53 | 8126 | arg = skip_spaces (arg); |
edcc5120 | 8127 | |
36bd8eaa | 8128 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8129 | |
8130 | if (*arg != '\0') | |
8131 | { | |
2d7cc5c7 PA |
8132 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8133 | _("Invalid regexp"))); | |
edcc5120 TT |
8134 | c->regex = xstrdup (arg); |
8135 | } | |
8136 | ||
8137 | c->is_load = is_load; | |
36bd8eaa | 8138 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8139 | &catch_solib_breakpoint_ops); |
8140 | ||
c1fc2657 | 8141 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8142 | |
b270e6f9 | 8143 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8144 | } |
8145 | ||
91985142 MG |
8146 | /* A helper function that does all the work for "catch load" and |
8147 | "catch unload". */ | |
8148 | ||
8149 | static void | |
eb4c3f4a | 8150 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8151 | struct cmd_list_element *command) |
8152 | { | |
91985142 | 8153 | const int enabled = 1; |
b650a282 | 8154 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
91985142 | 8155 | |
b650a282 | 8156 | add_solib_catchpoint (arg, is_load, temp, enabled); |
91985142 MG |
8157 | } |
8158 | ||
edcc5120 | 8159 | static void |
eb4c3f4a | 8160 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8161 | struct cmd_list_element *command) |
8162 | { | |
8163 | catch_load_or_unload (arg, from_tty, 1, command); | |
8164 | } | |
8165 | ||
8166 | static void | |
eb4c3f4a | 8167 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8168 | struct cmd_list_element *command) |
8169 | { | |
8170 | catch_load_or_unload (arg, from_tty, 0, command); | |
8171 | } | |
8172 | ||
b650a282 | 8173 | /* See breakpoint.h. */ |
ce78b96d | 8174 | |
ab04a2af | 8175 | void |
346774a9 | 8176 | init_catchpoint (struct breakpoint *b, |
b650a282 | 8177 | struct gdbarch *gdbarch, bool temp, |
63160a43 | 8178 | const char *cond_string, |
c0a91b2b | 8179 | const struct breakpoint_ops *ops) |
c906108c | 8180 | { |
51abb421 | 8181 | symtab_and_line sal; |
6c95b8df | 8182 | sal.pspace = current_program_space; |
c5aa993b | 8183 | |
28010a5d | 8184 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8185 | |
1b36a34b | 8186 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b650a282 | 8187 | b->disposition = temp ? disp_del : disp_donttouch; |
346774a9 PA |
8188 | } |
8189 | ||
28010a5d | 8190 | void |
b270e6f9 | 8191 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8192 | { |
b270e6f9 | 8193 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8194 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8195 | if (is_tracepoint (b)) |
8196 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8197 | if (!internal) |
8198 | mention (b); | |
76727919 | 8199 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8200 | |
8201 | if (update_gll) | |
44702360 | 8202 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8203 | } |
8204 | ||
9b70b993 | 8205 | static void |
a6d9a66e | 8206 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
b650a282 | 8207 | bool temp, const char *cond_string, |
dda83cd7 | 8208 | const struct breakpoint_ops *ops) |
c906108c | 8209 | { |
b270e6f9 | 8210 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8211 | |
b650a282 | 8212 | init_catchpoint (c.get (), gdbarch, temp, cond_string, ops); |
e29a4733 PA |
8213 | |
8214 | c->forked_inferior_pid = null_ptid; | |
8215 | ||
b270e6f9 | 8216 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8217 | } |
8218 | ||
fe798b75 JB |
8219 | /* Exec catchpoints. */ |
8220 | ||
b4d90040 | 8221 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8222 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8223 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8224 | ||
c1fc2657 | 8225 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8226 | { |
c1fc2657 | 8227 | ~exec_catchpoint () override; |
b4d90040 PA |
8228 | |
8229 | /* Filename of a program whose exec triggered this catchpoint. | |
8230 | This field is only valid immediately after this catchpoint has | |
8231 | triggered. */ | |
8232 | char *exec_pathname; | |
8233 | }; | |
8234 | ||
c1fc2657 | 8235 | /* Exec catchpoint destructor. */ |
b4d90040 | 8236 | |
c1fc2657 | 8237 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8238 | { |
c1fc2657 | 8239 | xfree (this->exec_pathname); |
b4d90040 PA |
8240 | } |
8241 | ||
77b06cd7 TJB |
8242 | static int |
8243 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8244 | { |
e99b03dc | 8245 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8246 | } |
c906108c | 8247 | |
fe798b75 | 8248 | static int |
73971819 | 8249 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8250 | { |
e99b03dc | 8251 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8252 | } |
c906108c | 8253 | |
fe798b75 | 8254 | static int |
f1310107 | 8255 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8256 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8257 | const struct target_waitstatus *ws) |
fe798b75 | 8258 | { |
b4d90040 PA |
8259 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8260 | ||
f90263c1 TT |
8261 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8262 | return 0; | |
8263 | ||
8264 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8265 | return 1; | |
fe798b75 | 8266 | } |
c906108c | 8267 | |
fe798b75 | 8268 | static enum print_stop_action |
348d480f | 8269 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8270 | { |
36dfb11c | 8271 | struct ui_out *uiout = current_uiout; |
348d480f | 8272 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8273 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8274 | ||
fe798b75 | 8275 | annotate_catchpoint (b->number); |
f303dbd6 | 8276 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8277 | if (b->disposition == disp_del) |
112e8700 | 8278 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8279 | else |
112e8700 SM |
8280 | uiout->text ("Catchpoint "); |
8281 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8282 | { |
112e8700 SM |
8283 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8284 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8285 | } |
381befee | 8286 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8287 | uiout->text (" (exec'd "); |
8288 | uiout->field_string ("new-exec", c->exec_pathname); | |
8289 | uiout->text ("), "); | |
36dfb11c | 8290 | |
fe798b75 | 8291 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8292 | } |
8293 | ||
fe798b75 | 8294 | static void |
a6d9a66e | 8295 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8296 | { |
b4d90040 | 8297 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8298 | struct value_print_options opts; |
79a45e25 | 8299 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8300 | |
8301 | get_user_print_options (&opts); | |
8302 | ||
8303 | /* Field 4, the address, is omitted (which makes the columns | |
8304 | not line up too nicely with the headers, but the effect | |
8305 | is relatively readable). */ | |
8306 | if (opts.addressprint) | |
112e8700 | 8307 | uiout->field_skip ("addr"); |
fe798b75 | 8308 | annotate_field (5); |
112e8700 | 8309 | uiout->text ("exec"); |
b4d90040 | 8310 | if (c->exec_pathname != NULL) |
fe798b75 | 8311 | { |
112e8700 SM |
8312 | uiout->text (", program \""); |
8313 | uiout->field_string ("what", c->exec_pathname); | |
8314 | uiout->text ("\" "); | |
fe798b75 | 8315 | } |
8ac3646f | 8316 | |
112e8700 SM |
8317 | if (uiout->is_mi_like_p ()) |
8318 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8319 | } |
8320 | ||
8321 | static void | |
8322 | print_mention_catch_exec (struct breakpoint *b) | |
8323 | { | |
8324 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8325 | } | |
8326 | ||
6149aea9 PA |
8327 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8328 | catchpoints. */ | |
8329 | ||
8330 | static void | |
8331 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8332 | { | |
8333 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8334 | print_recreate_thread (b, fp); |
6149aea9 PA |
8335 | } |
8336 | ||
2060206e | 8337 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8338 | |
c906108c | 8339 | static int |
fba45db2 | 8340 | hw_breakpoint_used_count (void) |
c906108c | 8341 | { |
c906108c SS |
8342 | int i = 0; |
8343 | ||
43892fdf | 8344 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 8345 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 8346 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
8347 | { |
8348 | /* Special types of hardware breakpoints may use more than | |
8349 | one register. */ | |
348d480f | 8350 | i += b->ops->resources_needed (bl); |
f1310107 | 8351 | } |
c906108c SS |
8352 | |
8353 | return i; | |
8354 | } | |
8355 | ||
a1398e0c PA |
8356 | /* Returns the resources B would use if it were a hardware |
8357 | watchpoint. */ | |
8358 | ||
c906108c | 8359 | static int |
a1398e0c | 8360 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8361 | { |
c906108c SS |
8362 | int i = 0; |
8363 | ||
a1398e0c PA |
8364 | if (!breakpoint_enabled (b)) |
8365 | return 0; | |
8366 | ||
40cb8ca5 | 8367 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
8368 | { |
8369 | /* Special types of hardware watchpoints may use more than | |
8370 | one register. */ | |
8371 | i += b->ops->resources_needed (bl); | |
8372 | } | |
8373 | ||
8374 | return i; | |
8375 | } | |
8376 | ||
8377 | /* Returns the sum the used resources of all hardware watchpoints of | |
8378 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8379 | the sum of the used resources of all hardware watchpoints of other | |
8380 | types _not_ TYPE. */ | |
8381 | ||
8382 | static int | |
8383 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8384 | enum bptype type, int *other_type_used) | |
8385 | { | |
8386 | int i = 0; | |
a1398e0c | 8387 | |
c906108c | 8388 | *other_type_used = 0; |
43892fdf | 8389 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 8390 | { |
a1398e0c PA |
8391 | if (b == except) |
8392 | continue; | |
e09342b5 TJB |
8393 | if (!breakpoint_enabled (b)) |
8394 | continue; | |
8395 | ||
a1398e0c PA |
8396 | if (b->type == type) |
8397 | i += hw_watchpoint_use_count (b); | |
8398 | else if (is_hardware_watchpoint (b)) | |
8399 | *other_type_used = 1; | |
e09342b5 TJB |
8400 | } |
8401 | ||
c906108c SS |
8402 | return i; |
8403 | } | |
8404 | ||
c906108c | 8405 | void |
fba45db2 | 8406 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8407 | { |
43892fdf | 8408 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8409 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8410 | { |
b5de0fa7 | 8411 | b->enable_state = bp_call_disabled; |
44702360 | 8412 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 8413 | } |
c906108c SS |
8414 | } |
8415 | ||
8416 | void | |
fba45db2 | 8417 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8418 | { |
43892fdf | 8419 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8420 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8421 | { |
b5de0fa7 | 8422 | b->enable_state = bp_enabled; |
44702360 | 8423 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 8424 | } |
c906108c SS |
8425 | } |
8426 | ||
8bea4e01 UW |
8427 | void |
8428 | disable_breakpoints_before_startup (void) | |
8429 | { | |
6c95b8df | 8430 | current_program_space->executing_startup = 1; |
44702360 | 8431 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8432 | } |
8433 | ||
8434 | void | |
8435 | enable_breakpoints_after_startup (void) | |
8436 | { | |
6c95b8df | 8437 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8438 | breakpoint_re_set (); |
8bea4e01 UW |
8439 | } |
8440 | ||
7c16b83e PA |
8441 | /* Create a new single-step breakpoint for thread THREAD, with no |
8442 | locations. */ | |
c906108c | 8443 | |
7c16b83e PA |
8444 | static struct breakpoint * |
8445 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8446 | { | |
b270e6f9 | 8447 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8448 | |
b270e6f9 | 8449 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8450 | &momentary_breakpoint_ops); |
8451 | ||
8452 | b->disposition = disp_donttouch; | |
8453 | b->frame_id = null_frame_id; | |
8454 | ||
8455 | b->thread = thread; | |
8456 | gdb_assert (b->thread != 0); | |
8457 | ||
b270e6f9 | 8458 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8459 | } |
8460 | ||
8461 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8462 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8463 | frame. */ | |
c906108c | 8464 | |
454dafbd | 8465 | breakpoint_up |
a6d9a66e UW |
8466 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8467 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8468 | { |
52f0bd74 | 8469 | struct breakpoint *b; |
edb3359d | 8470 | |
193facb3 JK |
8471 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8472 | tail-called one. */ | |
8473 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8474 | |
06edf0c0 | 8475 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8476 | b->enable_state = bp_enabled; |
8477 | b->disposition = disp_donttouch; | |
818dd999 | 8478 | b->frame_id = frame_id; |
c906108c | 8479 | |
00431a78 | 8480 | b->thread = inferior_thread ()->global_num; |
c906108c | 8481 | |
44702360 | 8482 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8483 | |
454dafbd | 8484 | return breakpoint_up (b); |
c906108c | 8485 | } |
611c83ae | 8486 | |
06edf0c0 | 8487 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8488 | The new breakpoint will have type TYPE, use OPS as its |
8489 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8490 | |
06edf0c0 PA |
8491 | static struct breakpoint * |
8492 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8493 | enum bptype type, | |
a1aa2221 LM |
8494 | const struct breakpoint_ops *ops, |
8495 | int loc_enabled) | |
e58b0e63 PA |
8496 | { |
8497 | struct breakpoint *copy; | |
8498 | ||
06edf0c0 | 8499 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8500 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8501 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8502 | |
a6d9a66e | 8503 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8504 | copy->loc->requested_address = orig->loc->requested_address; |
8505 | copy->loc->address = orig->loc->address; | |
8506 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8507 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8508 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8509 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8510 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8511 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8512 | copy->frame_id = orig->frame_id; |
8513 | copy->thread = orig->thread; | |
6c95b8df | 8514 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8515 | |
8516 | copy->enable_state = bp_enabled; | |
8517 | copy->disposition = disp_donttouch; | |
8518 | copy->number = internal_breakpoint_number--; | |
8519 | ||
44702360 | 8520 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8521 | return copy; |
8522 | } | |
8523 | ||
06edf0c0 PA |
8524 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8525 | ORIG is NULL. */ | |
8526 | ||
8527 | struct breakpoint * | |
8528 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8529 | { | |
8530 | /* If there's nothing to clone, then return nothing. */ | |
8531 | if (orig == NULL) | |
8532 | return NULL; | |
8533 | ||
a1aa2221 | 8534 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8535 | } |
8536 | ||
454dafbd | 8537 | breakpoint_up |
a6d9a66e UW |
8538 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8539 | enum bptype type) | |
611c83ae PA |
8540 | { |
8541 | struct symtab_and_line sal; | |
8542 | ||
8543 | sal = find_pc_line (pc, 0); | |
8544 | sal.pc = pc; | |
8545 | sal.section = find_pc_overlay (pc); | |
8546 | sal.explicit_pc = 1; | |
8547 | ||
a6d9a66e | 8548 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8549 | } |
c906108c | 8550 | \f |
c5aa993b | 8551 | |
c906108c SS |
8552 | /* Tell the user we have just set a breakpoint B. */ |
8553 | ||
8554 | static void | |
fba45db2 | 8555 | mention (struct breakpoint *b) |
c906108c | 8556 | { |
348d480f | 8557 | b->ops->print_mention (b); |
2d33446d | 8558 | current_uiout->text ("\n"); |
c906108c | 8559 | } |
c906108c | 8560 | \f |
c5aa993b | 8561 | |
5133a315 | 8562 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8563 | |
7f32a4d5 PA |
8564 | /* Handle "set breakpoint auto-hw on". |
8565 | ||
8566 | If the explicitly specified breakpoint type is not hardware | |
8567 | breakpoint, check the memory map to see whether the breakpoint | |
8568 | address is in read-only memory. | |
8569 | ||
8570 | - location type is not hardware breakpoint, memory is read-only. | |
8571 | We change the type of the location to hardware breakpoint. | |
8572 | ||
8573 | - location type is hardware breakpoint, memory is read-write. This | |
8574 | means we've previously made the location hardware one, but then the | |
8575 | memory map changed, so we undo. | |
8576 | */ | |
8577 | ||
8578 | static void | |
8579 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8580 | { | |
8581 | if (automatic_hardware_breakpoints | |
8582 | && bl->owner->type != bp_hardware_breakpoint | |
8583 | && (bl->loc_type == bp_loc_software_breakpoint | |
8584 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8585 | { | |
8586 | /* When breakpoints are removed, remove_breakpoints will use | |
8587 | location types we've just set here, the only possible problem | |
8588 | is that memory map has changed during running program, but | |
8589 | it's not going to work anyway with current gdb. */ | |
8590 | mem_region *mr = lookup_mem_region (bl->address); | |
8591 | ||
8592 | if (mr != nullptr) | |
8593 | { | |
8594 | enum bp_loc_type new_type; | |
8595 | ||
8596 | if (mr->attrib.mode != MEM_RW) | |
8597 | new_type = bp_loc_hardware_breakpoint; | |
8598 | else | |
8599 | new_type = bp_loc_software_breakpoint; | |
8600 | ||
8601 | if (new_type != bl->loc_type) | |
8602 | { | |
8603 | static bool said = false; | |
8604 | ||
8605 | bl->loc_type = new_type; | |
8606 | if (!said) | |
8607 | { | |
8608 | fprintf_filtered (gdb_stdout, | |
8609 | _("Note: automatically using " | |
8610 | "hardware breakpoints for " | |
8611 | "read-only addresses.\n")); | |
8612 | said = true; | |
8613 | } | |
8614 | } | |
8615 | } | |
8616 | } | |
8617 | } | |
8618 | ||
0d381245 | 8619 | static struct bp_location * |
39d61571 | 8620 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8621 | const struct symtab_and_line *sal) |
8622 | { | |
8623 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8624 | CORE_ADDR adjusted_address; |
8625 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8626 | ||
8627 | if (loc_gdbarch == NULL) | |
8628 | loc_gdbarch = b->gdbarch; | |
8629 | ||
8630 | /* Adjust the breakpoint's address prior to allocating a location. | |
8631 | Once we call allocate_bp_location(), that mostly uninitialized | |
8632 | location will be placed on the location chain. Adjustment of the | |
8633 | breakpoint may cause target_read_memory() to be called and we do | |
8634 | not want its scan of the location chain to find a breakpoint and | |
8635 | location that's only been partially initialized. */ | |
8636 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8637 | sal->pc, b->type); | |
0d381245 | 8638 | |
d30113d4 | 8639 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8640 | loc = allocate_bp_location (b); |
d30113d4 JK |
8641 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8642 | tmp = &((*tmp)->next)) | |
0d381245 | 8643 | ; |
d30113d4 | 8644 | loc->next = *tmp; |
0d381245 | 8645 | *tmp = loc; |
3742cc8b | 8646 | |
0d381245 | 8647 | loc->requested_address = sal->pc; |
3742cc8b | 8648 | loc->address = adjusted_address; |
6c95b8df | 8649 | loc->pspace = sal->pspace; |
935676c9 | 8650 | loc->probe.prob = sal->prob; |
729662a5 | 8651 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8652 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8653 | loc->section = sal->section; |
3742cc8b | 8654 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8655 | loc->line_number = sal->line; |
2f202fde | 8656 | loc->symtab = sal->symtab; |
4a27f119 | 8657 | loc->symbol = sal->symbol; |
3467ec66 PA |
8658 | loc->msymbol = sal->msymbol; |
8659 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8660 | |
0ba852ab | 8661 | set_breakpoint_location_function (loc); |
1a853c52 | 8662 | |
6ae88661 LM |
8663 | /* While by definition, permanent breakpoints are already present in the |
8664 | code, we don't mark the location as inserted. Normally one would expect | |
8665 | that GDB could rely on that breakpoint instruction to stop the program, | |
8666 | thus removing the need to insert its own breakpoint, except that executing | |
8667 | the breakpoint instruction can kill the target instead of reporting a | |
8668 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8669 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8670 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8671 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8672 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8673 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8674 | it manually increments the PC, thus avoiding executing the breakpoint | |
8675 | instruction.) */ | |
1a853c52 | 8676 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8677 | loc->permanent = 1; |
1a853c52 | 8678 | |
0d381245 VP |
8679 | return loc; |
8680 | } | |
514f746b AR |
8681 | \f |
8682 | ||
5133a315 LM |
8683 | /* Return true if LOC is pointing to a permanent breakpoint, |
8684 | return false otherwise. */ | |
1cf4d951 | 8685 | |
5133a315 | 8686 | static bool |
1cf4d951 PA |
8687 | bp_loc_is_permanent (struct bp_location *loc) |
8688 | { | |
514f746b AR |
8689 | gdb_assert (loc != NULL); |
8690 | ||
cb1e4e32 PA |
8691 | /* If we have a non-breakpoint-backed catchpoint or a software |
8692 | watchpoint, just return 0. We should not attempt to read from | |
8693 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8694 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8695 | memory. */ |
cb1e4e32 | 8696 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8697 | return false; |
244558af | 8698 | |
5ed8105e | 8699 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8700 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8701 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8702 | } |
8703 | ||
e7e0cddf SS |
8704 | /* Build a command list for the dprintf corresponding to the current |
8705 | settings of the dprintf style options. */ | |
8706 | ||
8707 | static void | |
8708 | update_dprintf_command_list (struct breakpoint *b) | |
8709 | { | |
8710 | char *dprintf_args = b->extra_string; | |
8711 | char *printf_line = NULL; | |
8712 | ||
8713 | if (!dprintf_args) | |
8714 | return; | |
8715 | ||
8716 | dprintf_args = skip_spaces (dprintf_args); | |
8717 | ||
8718 | /* Allow a comma, as it may have terminated a location, but don't | |
8719 | insist on it. */ | |
8720 | if (*dprintf_args == ',') | |
8721 | ++dprintf_args; | |
8722 | dprintf_args = skip_spaces (dprintf_args); | |
8723 | ||
8724 | if (*dprintf_args != '"') | |
8725 | error (_("Bad format string, missing '\"'.")); | |
8726 | ||
d3ce09f5 | 8727 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8728 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8729 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8730 | { |
8731 | if (!dprintf_function) | |
8732 | error (_("No function supplied for dprintf call")); | |
8733 | ||
8734 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8735 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8736 | dprintf_function, | |
8737 | dprintf_channel, | |
8738 | dprintf_args); | |
8739 | else | |
8740 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8741 | dprintf_function, | |
8742 | dprintf_args); | |
8743 | } | |
d3ce09f5 SS |
8744 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8745 | { | |
8746 | if (target_can_run_breakpoint_commands ()) | |
8747 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8748 | else | |
8749 | { | |
8750 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8751 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8752 | } | |
8753 | } | |
e7e0cddf SS |
8754 | else |
8755 | internal_error (__FILE__, __LINE__, | |
8756 | _("Invalid dprintf style.")); | |
8757 | ||
f28045c2 | 8758 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8759 | |
12973681 TT |
8760 | /* Manufacture a printf sequence. */ |
8761 | struct command_line *printf_cmd_line | |
8762 | = new struct command_line (simple_control, printf_line); | |
8763 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8764 | command_lines_deleter ())); | |
e7e0cddf SS |
8765 | } |
8766 | ||
8767 | /* Update all dprintf commands, making their command lists reflect | |
8768 | current style settings. */ | |
8769 | ||
8770 | static void | |
eb4c3f4a | 8771 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8772 | struct cmd_list_element *c) |
8773 | { | |
43892fdf SM |
8774 | for (breakpoint *b : all_breakpoints ()) |
8775 | if (b->type == bp_dprintf) | |
e7e0cddf | 8776 | update_dprintf_command_list (b); |
e7e0cddf | 8777 | } |
c3f6f71d | 8778 | |
f00aae0f KS |
8779 | /* Create a breakpoint with SAL as location. Use LOCATION |
8780 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8781 | as condition expression. If LOCATION is NULL then create an |
8782 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8783 | |
8784 | static void | |
d9b3f62e | 8785 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8786 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8787 | event_location_up &&location, |
e1e01040 PA |
8788 | gdb::unique_xmalloc_ptr<char> filter, |
8789 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8790 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8791 | enum bptype type, enum bpdisp disposition, |
8792 | int thread, int task, int ignore_count, | |
c0a91b2b | 8793 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8794 | int enabled, int internal, unsigned flags, |
8795 | int display_canonical) | |
018d34a4 | 8796 | { |
0d381245 | 8797 | int i; |
018d34a4 VP |
8798 | |
8799 | if (type == bp_hardware_breakpoint) | |
8800 | { | |
fbbd034e AS |
8801 | int target_resources_ok; |
8802 | ||
8803 | i = hw_breakpoint_used_count (); | |
8804 | target_resources_ok = | |
8805 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8806 | i + 1, 0); |
8807 | if (target_resources_ok == 0) | |
8808 | error (_("No hardware breakpoint support in the target.")); | |
8809 | else if (target_resources_ok < 0) | |
8810 | error (_("Hardware breakpoints used exceeds limit.")); | |
8811 | } | |
8812 | ||
6c5b2ebe | 8813 | gdb_assert (!sals.empty ()); |
6c95b8df | 8814 | |
6c5b2ebe | 8815 | for (const auto &sal : sals) |
0d381245 | 8816 | { |
0d381245 VP |
8817 | struct bp_location *loc; |
8818 | ||
8819 | if (from_tty) | |
5af949e3 UW |
8820 | { |
8821 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8822 | if (!loc_gdbarch) | |
8823 | loc_gdbarch = gdbarch; | |
8824 | ||
8825 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8826 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8827 | } |
0d381245 | 8828 | |
6c5b2ebe | 8829 | if (&sal == &sals[0]) |
0d381245 | 8830 | { |
d9b3f62e | 8831 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8832 | b->thread = thread; |
4a306c9a | 8833 | b->task = task; |
855a6e68 | 8834 | |
e1e01040 PA |
8835 | b->cond_string = cond_string.release (); |
8836 | b->extra_string = extra_string.release (); | |
0d381245 | 8837 | b->ignore_count = ignore_count; |
41447f92 | 8838 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8839 | b->disposition = disposition; |
6c95b8df | 8840 | |
44f238bb PA |
8841 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8842 | b->loc->inserted = 1; | |
8843 | ||
0fb4aa4b PA |
8844 | if (type == bp_static_tracepoint) |
8845 | { | |
d9b3f62e | 8846 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8847 | struct static_tracepoint_marker marker; |
8848 | ||
983af33b | 8849 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8850 | { |
8851 | /* We already know the marker exists, otherwise, we | |
8852 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8853 | const char *p |
8854 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8855 | const char *endp; |
0fb4aa4b | 8856 | |
f1735a53 | 8857 | p = skip_spaces (p); |
0fb4aa4b | 8858 | |
f1735a53 | 8859 | endp = skip_to_space (p); |
0fb4aa4b | 8860 | |
5d9310c4 | 8861 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8862 | |
3e43a32a MS |
8863 | printf_filtered (_("Probed static tracepoint " |
8864 | "marker \"%s\"\n"), | |
5d9310c4 | 8865 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8866 | } |
8867 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8868 | { | |
5d9310c4 | 8869 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8870 | |
3e43a32a MS |
8871 | printf_filtered (_("Probed static tracepoint " |
8872 | "marker \"%s\"\n"), | |
5d9310c4 | 8873 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8874 | } |
8875 | else | |
3e43a32a MS |
8876 | warning (_("Couldn't determine the static " |
8877 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8878 | } |
8879 | ||
0d381245 VP |
8880 | loc = b->loc; |
8881 | } | |
8882 | else | |
018d34a4 | 8883 | { |
39d61571 | 8884 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8885 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8886 | loc->inserted = 1; | |
0d381245 VP |
8887 | } |
8888 | ||
b5fa468f TBA |
8889 | /* Do not set breakpoint locations conditions yet. As locations |
8890 | are inserted, they get sorted based on their addresses. Let | |
8891 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8892 | |
8893 | /* Dynamic printf requires and uses additional arguments on the | |
8894 | command line, otherwise it's an error. */ | |
8895 | if (type == bp_dprintf) | |
8896 | { | |
8897 | if (b->extra_string) | |
8898 | update_dprintf_command_list (b); | |
8899 | else | |
8900 | error (_("Format string required")); | |
8901 | } | |
8902 | else if (b->extra_string) | |
588ae58c | 8903 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8904 | } |
018d34a4 | 8905 | |
b5fa468f TBA |
8906 | |
8907 | /* The order of the locations is now stable. Set the location | |
8908 | condition using the location's number. */ | |
8909 | int loc_num = 1; | |
40cb8ca5 | 8910 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
8911 | { |
8912 | if (b->cond_string != nullptr) | |
8913 | set_breakpoint_location_condition (b->cond_string, loc, b->number, | |
8914 | loc_num); | |
8915 | ||
8916 | ++loc_num; | |
8917 | } | |
8918 | ||
56435ebe | 8919 | b->display_canonical = display_canonical; |
f00aae0f | 8920 | if (location != NULL) |
d28cd78a | 8921 | b->location = std::move (location); |
018d34a4 | 8922 | else |
d28cd78a | 8923 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8924 | b->filter = std::move (filter); |
d9b3f62e | 8925 | } |
018d34a4 | 8926 | |
d9b3f62e PA |
8927 | static void |
8928 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8929 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8930 | event_location_up &&location, |
e1e01040 PA |
8931 | gdb::unique_xmalloc_ptr<char> filter, |
8932 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8933 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8934 | enum bptype type, enum bpdisp disposition, |
8935 | int thread, int task, int ignore_count, | |
c0a91b2b | 8936 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8937 | int enabled, int internal, unsigned flags, |
8938 | int display_canonical) | |
d9b3f62e | 8939 | { |
a5e364af | 8940 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8941 | |
a5e364af | 8942 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8943 | sals, std::move (location), |
e1e01040 PA |
8944 | std::move (filter), |
8945 | std::move (cond_string), | |
8946 | std::move (extra_string), | |
d9b3f62e PA |
8947 | type, disposition, |
8948 | thread, task, ignore_count, | |
8949 | ops, from_tty, | |
44f238bb PA |
8950 | enabled, internal, flags, |
8951 | display_canonical); | |
d9b3f62e | 8952 | |
b270e6f9 | 8953 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8954 | } |
8955 | ||
8956 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8957 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8958 | value. COND_STRING, if not NULL, specified the condition to be | |
8959 | used for all breakpoints. Essentially the only case where | |
8960 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8961 | function. In that case, it's still not possible to specify | |
8962 | separate conditions for different overloaded functions, so | |
8963 | we take just a single condition string. | |
8964 | ||
c3f6f71d | 8965 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8966 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8967 | array contents). If the function fails (error() is called), the |
8968 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8969 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8970 | |
8971 | static void | |
8cdf0e15 | 8972 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8973 | struct linespec_result *canonical, |
e1e01040 PA |
8974 | gdb::unique_xmalloc_ptr<char> cond_string, |
8975 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8976 | enum bptype type, enum bpdisp disposition, |
8977 | int thread, int task, int ignore_count, | |
c0a91b2b | 8978 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8979 | int enabled, int internal, unsigned flags) |
c906108c | 8980 | { |
f8eba3c6 | 8981 | if (canonical->pre_expanded) |
6c5b2ebe | 8982 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8983 | |
6c5b2ebe | 8984 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8985 | { |
f00aae0f | 8986 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8987 | 'break', without arguments. */ |
ffc2605c | 8988 | event_location_up location |
f00aae0f | 8989 | = (canonical->location != NULL |
8e9e35b1 | 8990 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8991 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8992 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8993 | |
6c5b2ebe | 8994 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8995 | std::move (location), |
e1e01040 PA |
8996 | std::move (filter_string), |
8997 | std::move (cond_string), | |
8998 | std::move (extra_string), | |
e7e0cddf | 8999 | type, disposition, |
84f4c1fe | 9000 | thread, task, ignore_count, ops, |
44f238bb | 9001 | from_tty, enabled, internal, flags, |
56435ebe | 9002 | canonical->special_display); |
c3f6f71d | 9003 | } |
c3f6f71d | 9004 | } |
c906108c | 9005 | |
f00aae0f | 9006 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9007 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9008 | addresses found. LOCATION points to the end of the SAL (for |
9009 | linespec locations). | |
9998af43 TJB |
9010 | |
9011 | The array and the line spec strings are allocated on the heap, it is | |
9012 | the caller's responsibility to free them. */ | |
c906108c | 9013 | |
b9362cc7 | 9014 | static void |
626d2320 | 9015 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 9016 | struct linespec_result *canonical) |
c3f6f71d | 9017 | { |
f00aae0f KS |
9018 | struct symtab_and_line cursal; |
9019 | ||
9020 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9021 | { | |
a20714ff | 9022 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9023 | |
a20714ff | 9024 | if (spec == NULL) |
f00aae0f KS |
9025 | { |
9026 | /* The last displayed codepoint, if it's valid, is our default | |
9027 | breakpoint address. */ | |
9028 | if (last_displayed_sal_is_valid ()) | |
9029 | { | |
f00aae0f KS |
9030 | /* Set sal's pspace, pc, symtab, and line to the values |
9031 | corresponding to the last call to print_frame_info. | |
9032 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9033 | as the breakpoint line number is inappropriate otherwise. | |
9034 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9035 | symtab_and_line sal = get_last_displayed_sal (); |
9036 | CORE_ADDR pc = sal.pc; | |
9037 | ||
f00aae0f KS |
9038 | sal = find_pc_line (pc, 0); |
9039 | ||
9040 | /* "break" without arguments is equivalent to "break *PC" | |
9041 | where PC is the last displayed codepoint's address. So | |
9042 | make sure to set sal.explicit_pc to prevent GDB from | |
9043 | trying to expand the list of sals to include all other | |
9044 | instances with the same symtab and line. */ | |
9045 | sal.pc = pc; | |
9046 | sal.explicit_pc = 1; | |
9047 | ||
6c5b2ebe PA |
9048 | struct linespec_sals lsal; |
9049 | lsal.sals = {sal}; | |
f00aae0f KS |
9050 | lsal.canonical = NULL; |
9051 | ||
6c5b2ebe | 9052 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9053 | return; |
9054 | } | |
9055 | else | |
9056 | error (_("No default breakpoint address now.")); | |
c906108c | 9057 | } |
c906108c | 9058 | } |
f00aae0f KS |
9059 | |
9060 | /* Force almost all breakpoints to be in terms of the | |
9061 | current_source_symtab (which is decode_line_1's default). | |
9062 | This should produce the results we want almost all of the | |
9063 | time while leaving default_breakpoint_* alone. | |
9064 | ||
9065 | ObjC: However, don't match an Objective-C method name which | |
9066 | may have a '+' or '-' succeeded by a '['. */ | |
9067 | cursal = get_current_source_symtab_and_line (); | |
9068 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9069 | { |
a20714ff | 9070 | const char *spec = NULL; |
cc80f267 | 9071 | |
f00aae0f | 9072 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9073 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9074 | |
f00aae0f | 9075 | if (!cursal.symtab |
a20714ff PA |
9076 | || (spec != NULL |
9077 | && strchr ("+-", spec[0]) != NULL | |
9078 | && spec[1] != '[')) | |
f00aae0f | 9079 | { |
c2f4122d | 9080 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9081 | get_last_displayed_symtab (), |
9082 | get_last_displayed_line (), | |
9083 | canonical, NULL, NULL); | |
9084 | return; | |
9085 | } | |
c906108c | 9086 | } |
f00aae0f | 9087 | |
c2f4122d | 9088 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9089 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9090 | } |
c906108c | 9091 | |
c906108c | 9092 | |
c3f6f71d | 9093 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9094 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9095 | |
b9362cc7 | 9096 | static void |
6c5b2ebe | 9097 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9098 | { |
6c5b2ebe PA |
9099 | for (auto &sal : sals) |
9100 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9101 | } |
9102 | ||
7a697b8d SS |
9103 | /* Fast tracepoints may have restrictions on valid locations. For |
9104 | instance, a fast tracepoint using a jump instead of a trap will | |
9105 | likely have to overwrite more bytes than a trap would, and so can | |
9106 | only be placed where the instruction is longer than the jump, or a | |
9107 | multi-instruction sequence does not have a jump into the middle of | |
9108 | it, etc. */ | |
9109 | ||
9110 | static void | |
9111 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9112 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9113 | { |
6c5b2ebe | 9114 | for (const auto &sal : sals) |
7a697b8d | 9115 | { |
f8eba3c6 TT |
9116 | struct gdbarch *sarch; |
9117 | ||
6c5b2ebe | 9118 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9119 | /* We fall back to GDBARCH if there is no architecture |
9120 | associated with SAL. */ | |
9121 | if (sarch == NULL) | |
9122 | sarch = gdbarch; | |
281d762b TT |
9123 | std::string msg; |
9124 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9125 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9126 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9127 | } |
9128 | } | |
9129 | ||
018d34a4 VP |
9130 | /* Given TOK, a string specification of condition and thread, as |
9131 | accepted by the 'break' command, extract the condition | |
9132 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9133 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9134 | If no condition is found, *COND_STRING is set to NULL. |
9135 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9136 | |
9137 | static void | |
bbc13ae3 | 9138 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9139 | char **cond_string, int *thread, int *task, |
9140 | char **rest) | |
018d34a4 VP |
9141 | { |
9142 | *cond_string = NULL; | |
9143 | *thread = -1; | |
ed1d1739 KS |
9144 | *task = 0; |
9145 | *rest = NULL; | |
733d554a | 9146 | bool force = false; |
ed1d1739 | 9147 | |
018d34a4 VP |
9148 | while (tok && *tok) |
9149 | { | |
bbc13ae3 | 9150 | const char *end_tok; |
018d34a4 | 9151 | int toklen; |
bbc13ae3 KS |
9152 | const char *cond_start = NULL; |
9153 | const char *cond_end = NULL; | |
cc59ec59 | 9154 | |
f1735a53 | 9155 | tok = skip_spaces (tok); |
e7e0cddf SS |
9156 | |
9157 | if ((*tok == '"' || *tok == ',') && rest) | |
9158 | { | |
9159 | *rest = savestring (tok, strlen (tok)); | |
9160 | return; | |
9161 | } | |
9162 | ||
f1735a53 | 9163 | end_tok = skip_to_space (tok); |
d634f2de | 9164 | |
018d34a4 | 9165 | toklen = end_tok - tok; |
d634f2de | 9166 | |
018d34a4 VP |
9167 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9168 | { | |
9169 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
9170 | try |
9171 | { | |
9172 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
9173 | } | |
9174 | catch (const gdb_exception_error &) | |
9175 | { | |
9176 | if (!force) | |
9177 | throw; | |
9178 | else | |
9179 | tok = tok + strlen (tok); | |
9180 | } | |
018d34a4 | 9181 | cond_end = tok; |
d634f2de | 9182 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 | 9183 | } |
733d554a TBA |
9184 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
9185 | { | |
5759831a | 9186 | tok = tok + toklen; |
733d554a TBA |
9187 | force = true; |
9188 | } | |
018d34a4 VP |
9189 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
9190 | { | |
5d5658a1 PA |
9191 | const char *tmptok; |
9192 | struct thread_info *thr; | |
d634f2de | 9193 | |
018d34a4 | 9194 | tok = end_tok + 1; |
5d5658a1 | 9195 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9196 | if (tok == tmptok) |
9197 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9198 | *thread = thr->global_num; |
bbc13ae3 | 9199 | tok = tmptok; |
018d34a4 | 9200 | } |
4a306c9a JB |
9201 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9202 | { | |
9203 | char *tmptok; | |
9204 | ||
9205 | tok = end_tok + 1; | |
bbc13ae3 | 9206 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9207 | if (tok == tmptok) |
9208 | error (_("Junk after task keyword.")); | |
9209 | if (!valid_task_id (*task)) | |
b6199126 | 9210 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9211 | tok = tmptok; |
4a306c9a | 9212 | } |
e7e0cddf SS |
9213 | else if (rest) |
9214 | { | |
9215 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9216 | return; |
e7e0cddf | 9217 | } |
018d34a4 VP |
9218 | else |
9219 | error (_("Junk at end of arguments.")); | |
9220 | } | |
9221 | } | |
9222 | ||
b5fa468f TBA |
9223 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
9224 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
9225 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
9226 | for the description of these parameters and INPUT. */ | |
9227 | ||
9228 | static void | |
9229 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
9230 | const char *input, char **cond_string, | |
9231 | int *thread, int *task, char **rest) | |
9232 | { | |
9233 | int num_failures = 0; | |
9234 | for (auto &sal : sals) | |
9235 | { | |
9236 | char *cond = nullptr; | |
9237 | int thread_id = 0; | |
9238 | int task_id = 0; | |
9239 | char *remaining = nullptr; | |
9240 | ||
9241 | /* Here we want to parse 'arg' to separate condition from thread | |
9242 | number. But because parsing happens in a context and the | |
9243 | contexts of sals might be different, try each until there is | |
9244 | success. Finding one successful parse is sufficient for our | |
9245 | goal. When setting the breakpoint we'll re-parse the | |
9246 | condition in the context of each sal. */ | |
9247 | try | |
9248 | { | |
9249 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
9250 | &task_id, &remaining); | |
9251 | *cond_string = cond; | |
9252 | *thread = thread_id; | |
9253 | *task = task_id; | |
9254 | *rest = remaining; | |
9255 | break; | |
9256 | } | |
9257 | catch (const gdb_exception_error &e) | |
9258 | { | |
9259 | num_failures++; | |
9260 | /* If no sal remains, do not continue. */ | |
9261 | if (num_failures == sals.size ()) | |
9262 | throw; | |
9263 | } | |
9264 | } | |
9265 | } | |
9266 | ||
0fb4aa4b PA |
9267 | /* Decode a static tracepoint marker spec. */ |
9268 | ||
6c5b2ebe | 9269 | static std::vector<symtab_and_line> |
f00aae0f | 9270 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9271 | { |
f00aae0f KS |
9272 | const char *p = &(*arg_p)[3]; |
9273 | const char *endp; | |
0fb4aa4b | 9274 | |
f1735a53 | 9275 | p = skip_spaces (p); |
0fb4aa4b | 9276 | |
f1735a53 | 9277 | endp = skip_to_space (p); |
0fb4aa4b | 9278 | |
81b1e71c | 9279 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9280 | |
5d9310c4 SM |
9281 | std::vector<static_tracepoint_marker> markers |
9282 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9283 | if (markers.empty ()) | |
81b1e71c TT |
9284 | error (_("No known static tracepoint marker named %s"), |
9285 | marker_str.c_str ()); | |
0fb4aa4b | 9286 | |
6c5b2ebe | 9287 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9288 | sals.reserve (markers.size ()); |
0fb4aa4b | 9289 | |
5d9310c4 | 9290 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9291 | { |
5d9310c4 SM |
9292 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9293 | sal.pc = marker.address; | |
6c5b2ebe | 9294 | sals.push_back (sal); |
5d9310c4 | 9295 | } |
0fb4aa4b | 9296 | |
0fb4aa4b PA |
9297 | *arg_p = endp; |
9298 | return sals; | |
9299 | } | |
9300 | ||
bac7c5cf GB |
9301 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9302 | according to IS_TRACEPOINT. */ | |
9303 | ||
9304 | static const struct breakpoint_ops * | |
9305 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9306 | bool is_tracepoint) | |
9307 | { | |
9308 | if (is_tracepoint) | |
9309 | { | |
9310 | if (location_type == PROBE_LOCATION) | |
9311 | return &tracepoint_probe_breakpoint_ops; | |
9312 | else | |
9313 | return &tracepoint_breakpoint_ops; | |
9314 | } | |
9315 | else | |
9316 | { | |
9317 | if (location_type == PROBE_LOCATION) | |
9318 | return &bkpt_probe_breakpoint_ops; | |
9319 | else | |
9320 | return &bkpt_breakpoint_ops; | |
9321 | } | |
9322 | } | |
9323 | ||
9324 | /* See breakpoint.h. */ | |
9325 | ||
9326 | const struct breakpoint_ops * | |
9327 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9328 | bool is_tracepoint) | |
9329 | { | |
9330 | if (location != nullptr) | |
9331 | return breakpoint_ops_for_event_location_type | |
9332 | (event_location_type (location), is_tracepoint); | |
9333 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9334 | } | |
9335 | ||
f00aae0f | 9336 | /* See breakpoint.h. */ |
0101ce28 | 9337 | |
8cdf0e15 VP |
9338 | int |
9339 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 9340 | struct event_location *location, |
e1e01040 PA |
9341 | const char *cond_string, |
9342 | int thread, const char *extra_string, | |
10a636cc | 9343 | bool force_condition, int parse_extra, |
0fb4aa4b | 9344 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9345 | int ignore_count, |
9346 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9347 | const struct breakpoint_ops *ops, |
44f238bb PA |
9348 | int from_tty, int enabled, int internal, |
9349 | unsigned flags) | |
c3f6f71d | 9350 | { |
7efd8fc2 | 9351 | struct linespec_result canonical; |
0101ce28 | 9352 | int pending = 0; |
4a306c9a | 9353 | int task = 0; |
86b17b60 | 9354 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9355 | |
348d480f PA |
9356 | gdb_assert (ops != NULL); |
9357 | ||
f00aae0f KS |
9358 | /* If extra_string isn't useful, set it to NULL. */ |
9359 | if (extra_string != NULL && *extra_string == '\0') | |
9360 | extra_string = NULL; | |
9361 | ||
a70b8144 | 9362 | try |
b78a6381 | 9363 | { |
f00aae0f | 9364 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9365 | } |
230d2906 | 9366 | catch (const gdb_exception_error &e) |
0101ce28 | 9367 | { |
492d29ea PA |
9368 | /* If caller is interested in rc value from parse, set |
9369 | value. */ | |
9370 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9371 | { |
05ff989b AC |
9372 | /* If pending breakpoint support is turned off, throw |
9373 | error. */ | |
fa8d40ab JJ |
9374 | |
9375 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9376 | throw; |
723a2275 VP |
9377 | |
9378 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9379 | |
dda83cd7 | 9380 | /* If pending breakpoint support is auto query and the user |
05ff989b | 9381 | selects no, then simply return the error code. */ |
059fb39f | 9382 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9383 | && !nquery (_("Make %s pending on future shared library load? "), |
9384 | bptype_string (type_wanted))) | |
fd9b8c24 | 9385 | return 0; |
fa8d40ab | 9386 | |
05ff989b AC |
9387 | /* At this point, either the user was queried about setting |
9388 | a pending breakpoint and selected yes, or pending | |
9389 | breakpoint behavior is on and thus a pending breakpoint | |
9390 | is defaulted on behalf of the user. */ | |
f00aae0f | 9391 | pending = 1; |
0101ce28 | 9392 | } |
492d29ea | 9393 | else |
eedc3f4f | 9394 | throw; |
0101ce28 | 9395 | } |
492d29ea | 9396 | |
6c5b2ebe | 9397 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9398 | return 0; |
c3f6f71d | 9399 | |
c3f6f71d JM |
9400 | /* Resolve all line numbers to PC's and verify that the addresses |
9401 | are ok for the target. */ | |
0101ce28 | 9402 | if (!pending) |
f8eba3c6 | 9403 | { |
6c5b2ebe PA |
9404 | for (auto &lsal : canonical.lsals) |
9405 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9406 | } |
c3f6f71d | 9407 | |
7a697b8d | 9408 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9409 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9410 | { |
6c5b2ebe PA |
9411 | for (const auto &lsal : canonical.lsals) |
9412 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9413 | } |
7a697b8d | 9414 | |
c3f6f71d JM |
9415 | /* Verify that condition can be parsed, before setting any |
9416 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9417 | breakpoint. */ |
0101ce28 | 9418 | if (!pending) |
c3f6f71d | 9419 | { |
e1e01040 PA |
9420 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9421 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9422 | ||
f00aae0f | 9423 | if (parse_extra) |
dda83cd7 | 9424 | { |
0878d0fa | 9425 | char *rest; |
e1e01040 | 9426 | char *cond; |
52d361e1 | 9427 | |
6c5b2ebe | 9428 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9429 | |
b5fa468f TBA |
9430 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
9431 | &cond, &thread, &task, &rest); | |
e1e01040 PA |
9432 | cond_string_copy.reset (cond); |
9433 | extra_string_copy.reset (rest); | |
dda83cd7 | 9434 | } |
2f069f6f | 9435 | else |
dda83cd7 | 9436 | { |
f00aae0f KS |
9437 | if (type_wanted != bp_dprintf |
9438 | && extra_string != NULL && *extra_string != '\0') | |
9439 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 9440 | |
10a636cc TBA |
9441 | /* Check the validity of the condition. We should error out |
9442 | if the condition is invalid at all of the locations and | |
9443 | if it is not forced. In the PARSE_EXTRA case above, this | |
9444 | check is done when parsing the EXTRA_STRING. */ | |
9445 | if (cond_string != nullptr && !force_condition) | |
9446 | { | |
9447 | int num_failures = 0; | |
9448 | const linespec_sals &lsal = canonical.lsals[0]; | |
9449 | for (const auto &sal : lsal.sals) | |
9450 | { | |
9451 | const char *cond = cond_string; | |
9452 | try | |
9453 | { | |
9454 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
9455 | /* One success is sufficient to keep going. */ | |
9456 | break; | |
9457 | } | |
9458 | catch (const gdb_exception_error &) | |
9459 | { | |
9460 | num_failures++; | |
9461 | /* If this is the last sal, error out. */ | |
9462 | if (num_failures == lsal.sals.size ()) | |
9463 | throw; | |
9464 | } | |
9465 | } | |
9466 | } | |
9467 | ||
0878d0fa YQ |
9468 | /* Create a private copy of condition string. */ |
9469 | if (cond_string) | |
e1e01040 | 9470 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9471 | /* Create a private copy of any extra string. */ |
9472 | if (extra_string) | |
e1e01040 | 9473 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 9474 | } |
0fb4aa4b | 9475 | |
52d361e1 | 9476 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9477 | std::move (cond_string_copy), |
9478 | std::move (extra_string_copy), | |
9479 | type_wanted, | |
d9b3f62e PA |
9480 | tempflag ? disp_del : disp_donttouch, |
9481 | thread, task, ignore_count, ops, | |
44f238bb | 9482 | from_tty, enabled, internal, flags); |
c906108c | 9483 | } |
0101ce28 JJ |
9484 | else |
9485 | { | |
a5e364af | 9486 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9487 | |
a5e364af | 9488 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9489 | b->location = copy_event_location (location); |
bfccc43c | 9490 | |
f00aae0f KS |
9491 | if (parse_extra) |
9492 | b->cond_string = NULL; | |
e12c7713 MK |
9493 | else |
9494 | { | |
9495 | /* Create a private copy of condition string. */ | |
e1e01040 | 9496 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9497 | b->thread = thread; |
e12c7713 | 9498 | } |
f00aae0f KS |
9499 | |
9500 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9501 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9502 | b->ignore_count = ignore_count; |
0101ce28 | 9503 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9504 | b->condition_not_parsed = 1; |
41447f92 | 9505 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 9506 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 9507 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 9508 | b->pspace = current_program_space; |
8bea4e01 | 9509 | |
b270e6f9 | 9510 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9511 | } |
9512 | ||
6c5b2ebe | 9513 | if (canonical.lsals.size () > 1) |
95a42b64 | 9514 | { |
3e43a32a MS |
9515 | warning (_("Multiple breakpoints were set.\nUse the " |
9516 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9517 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9518 | } |
9519 | ||
44702360 | 9520 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9521 | |
9522 | return 1; | |
c3f6f71d | 9523 | } |
c906108c | 9524 | |
348d480f | 9525 | /* Set a breakpoint. |
72b2ff0e VP |
9526 | ARG is a string describing breakpoint address, |
9527 | condition, and thread. | |
9528 | FLAG specifies if a breakpoint is hardware on, | |
9529 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9530 | and BP_TEMPFLAG. */ | |
348d480f | 9531 | |
98deb0da | 9532 | static void |
f2fc3015 | 9533 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9534 | { |
72b2ff0e | 9535 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9536 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9537 | ? bp_hardware_breakpoint | |
9538 | : bp_breakpoint); | |
f00aae0f | 9539 | |
ffc2605c | 9540 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9541 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9542 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9543 | |
8cdf0e15 | 9544 | create_breakpoint (get_current_arch (), |
ffc2605c | 9545 | location.get (), |
10a636cc | 9546 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 9547 | tempflag, type_wanted, |
8cdf0e15 VP |
9548 | 0 /* Ignore count */, |
9549 | pending_break_support, | |
55aa24fb | 9550 | ops, |
8cdf0e15 | 9551 | from_tty, |
84f4c1fe | 9552 | 1 /* enabled */, |
44f238bb PA |
9553 | 0 /* internal */, |
9554 | 0); | |
c906108c SS |
9555 | } |
9556 | ||
c906108c SS |
9557 | /* Helper function for break_command_1 and disassemble_command. */ |
9558 | ||
9559 | void | |
fba45db2 | 9560 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9561 | { |
9562 | CORE_ADDR pc; | |
9563 | ||
9564 | if (sal->pc == 0 && sal->symtab != NULL) | |
9565 | { | |
9566 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9567 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9568 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9569 | sal->pc = pc; |
6a048695 | 9570 | |
4a64f543 | 9571 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9572 | number, then skip the function prologue if necessary. */ |
6a048695 | 9573 | if (sal->explicit_line) |
059acae7 | 9574 | skip_prologue_sal (sal); |
c906108c SS |
9575 | } |
9576 | ||
9577 | if (sal->section == 0 && sal->symtab != NULL) | |
9578 | { | |
346d1dfe | 9579 | const struct blockvector *bv; |
3977b71f | 9580 | const struct block *b; |
c5aa993b | 9581 | struct symbol *sym; |
c906108c | 9582 | |
43f3e411 DE |
9583 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9584 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9585 | if (bv != NULL) |
9586 | { | |
7f0df278 | 9587 | sym = block_linkage_function (b); |
c906108c SS |
9588 | if (sym != NULL) |
9589 | { | |
eb822aa6 | 9590 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
ebbc3a7d | 9591 | sal->section = sym->obj_section (SYMTAB_OBJFILE (sal->symtab)); |
c906108c SS |
9592 | } |
9593 | else | |
9594 | { | |
4a64f543 | 9595 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9596 | just have to look harder. This case can be executed |
9597 | if we have line numbers but no functions (as can | |
9598 | happen in assembly source). */ | |
c906108c | 9599 | |
5ed8105e | 9600 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9601 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9602 | |
5ed8105e | 9603 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9604 | if (msym.minsym) |
1db66e34 | 9605 | sal->section = msym.obj_section (); |
c906108c SS |
9606 | } |
9607 | } | |
9608 | } | |
9609 | } | |
9610 | ||
9611 | void | |
0b39b52e | 9612 | break_command (const char *arg, int from_tty) |
c906108c | 9613 | { |
db107f19 | 9614 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9615 | } |
9616 | ||
c906108c | 9617 | void |
0b39b52e | 9618 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9619 | { |
db107f19 | 9620 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9621 | } |
9622 | ||
c906108c | 9623 | static void |
0b39b52e | 9624 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9625 | { |
db107f19 | 9626 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9627 | } |
9628 | ||
9629 | static void | |
0b39b52e | 9630 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9631 | { |
db107f19 | 9632 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9633 | } |
9634 | ||
9635 | static void | |
ee7ddd71 | 9636 | stop_command (const char *arg, int from_tty) |
c906108c | 9637 | { |
a3f17187 | 9638 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9639 | Usage: stop in <function | address>\n\ |
a3f17187 | 9640 | stop at <line>\n")); |
c906108c SS |
9641 | } |
9642 | ||
9643 | static void | |
4495129a | 9644 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9645 | { |
9646 | int badInput = 0; | |
9647 | ||
cafb3438 | 9648 | if (arg == NULL) |
c906108c SS |
9649 | badInput = 1; |
9650 | else if (*arg != '*') | |
9651 | { | |
4495129a | 9652 | const char *argptr = arg; |
c906108c SS |
9653 | int hasColon = 0; |
9654 | ||
4a64f543 | 9655 | /* Look for a ':'. If this is a line number specification, then |
dda83cd7 SM |
9656 | say it is bad, otherwise, it should be an address or |
9657 | function/method name. */ | |
c906108c | 9658 | while (*argptr && !hasColon) |
c5aa993b JM |
9659 | { |
9660 | hasColon = (*argptr == ':'); | |
9661 | argptr++; | |
9662 | } | |
c906108c SS |
9663 | |
9664 | if (hasColon) | |
c5aa993b | 9665 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9666 | else |
c5aa993b | 9667 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9668 | } |
9669 | ||
9670 | if (badInput) | |
a3f17187 | 9671 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9672 | else |
db107f19 | 9673 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9674 | } |
9675 | ||
9676 | static void | |
4495129a | 9677 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9678 | { |
9679 | int badInput = 0; | |
9680 | ||
cafb3438 | 9681 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9682 | badInput = 1; |
9683 | else | |
9684 | { | |
4495129a | 9685 | const char *argptr = arg; |
c906108c SS |
9686 | int hasColon = 0; |
9687 | ||
4a64f543 | 9688 | /* Look for a ':'. If there is a '::' then get out, otherwise |
dda83cd7 | 9689 | it is probably a line number. */ |
c906108c | 9690 | while (*argptr && !hasColon) |
c5aa993b JM |
9691 | { |
9692 | hasColon = (*argptr == ':'); | |
9693 | argptr++; | |
9694 | } | |
c906108c SS |
9695 | |
9696 | if (hasColon) | |
c5aa993b | 9697 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9698 | else |
c5aa993b | 9699 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9700 | } |
9701 | ||
9702 | if (badInput) | |
65e65158 | 9703 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9704 | else |
db107f19 | 9705 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9706 | } |
9707 | ||
e7e0cddf SS |
9708 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9709 | with a prewired command list consisting of a single output command, | |
9710 | built from extra arguments supplied on the dprintf command | |
9711 | line. */ | |
9712 | ||
da821c7b | 9713 | static void |
0b39b52e | 9714 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9715 | { |
ffc2605c | 9716 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9717 | |
9718 | /* If non-NULL, ARG should have been advanced past the location; | |
9719 | the next character must be ','. */ | |
9720 | if (arg != NULL) | |
9721 | { | |
9722 | if (arg[0] != ',' || arg[1] == '\0') | |
9723 | error (_("Format string required")); | |
9724 | else | |
9725 | { | |
9726 | /* Skip the comma. */ | |
9727 | ++arg; | |
9728 | } | |
9729 | } | |
9730 | ||
e7e0cddf | 9731 | create_breakpoint (get_current_arch (), |
ffc2605c | 9732 | location.get (), |
10a636cc | 9733 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9734 | 0, bp_dprintf, |
9735 | 0 /* Ignore count */, | |
9736 | pending_break_support, | |
9737 | &dprintf_breakpoint_ops, | |
9738 | from_tty, | |
9739 | 1 /* enabled */, | |
9740 | 0 /* internal */, | |
9741 | 0); | |
9742 | } | |
9743 | ||
d3ce09f5 | 9744 | static void |
0b39b52e | 9745 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9746 | { |
9747 | error (_("May only run agent-printf on the target")); | |
9748 | } | |
9749 | ||
f1310107 TJB |
9750 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9751 | ranged breakpoints. */ | |
9752 | ||
9753 | static int | |
9754 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9755 | const address_space *aspace, |
09ac7c10 TT |
9756 | CORE_ADDR bp_addr, |
9757 | const struct target_waitstatus *ws) | |
f1310107 | 9758 | { |
09ac7c10 | 9759 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9760 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9761 | return 0; |
9762 | ||
f1310107 TJB |
9763 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9764 | bl->length, aspace, bp_addr); | |
9765 | } | |
9766 | ||
9767 | /* Implement the "resources_needed" breakpoint_ops method for | |
9768 | ranged breakpoints. */ | |
9769 | ||
9770 | static int | |
9771 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9772 | { | |
9773 | return target_ranged_break_num_registers (); | |
9774 | } | |
9775 | ||
9776 | /* Implement the "print_it" breakpoint_ops method for | |
9777 | ranged breakpoints. */ | |
9778 | ||
9779 | static enum print_stop_action | |
348d480f | 9780 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9781 | { |
348d480f | 9782 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9783 | struct bp_location *bl = b->loc; |
79a45e25 | 9784 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9785 | |
9786 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9787 | ||
9788 | /* Ranged breakpoints have only one location. */ | |
9789 | gdb_assert (bl && bl->next == NULL); | |
9790 | ||
9791 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9792 | |
9793 | maybe_print_thread_hit_breakpoint (uiout); | |
9794 | ||
f1310107 | 9795 | if (b->disposition == disp_del) |
112e8700 | 9796 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9797 | else |
112e8700 SM |
9798 | uiout->text ("Ranged breakpoint "); |
9799 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9800 | { |
112e8700 | 9801 | uiout->field_string ("reason", |
f1310107 | 9802 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9803 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9804 | } |
381befee | 9805 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9806 | uiout->text (", "); |
f1310107 TJB |
9807 | |
9808 | return PRINT_SRC_AND_LOC; | |
9809 | } | |
9810 | ||
9811 | /* Implement the "print_one" breakpoint_ops method for | |
9812 | ranged breakpoints. */ | |
9813 | ||
9814 | static void | |
9815 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9816 | struct bp_location **last_loc) | |
9817 | { | |
9818 | struct bp_location *bl = b->loc; | |
9819 | struct value_print_options opts; | |
79a45e25 | 9820 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9821 | |
9822 | /* Ranged breakpoints have only one location. */ | |
9823 | gdb_assert (bl && bl->next == NULL); | |
9824 | ||
9825 | get_user_print_options (&opts); | |
9826 | ||
9827 | if (opts.addressprint) | |
9828 | /* We don't print the address range here, it will be printed later | |
9829 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9830 | uiout->field_skip ("addr"); |
f1310107 TJB |
9831 | annotate_field (5); |
9832 | print_breakpoint_location (b, bl); | |
9833 | *last_loc = bl; | |
9834 | } | |
9835 | ||
9836 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9837 | ranged breakpoints. */ | |
9838 | ||
9839 | static void | |
9840 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9841 | struct ui_out *uiout) | |
9842 | { | |
9843 | CORE_ADDR address_start, address_end; | |
9844 | struct bp_location *bl = b->loc; | |
d7e74731 | 9845 | string_file stb; |
f1310107 TJB |
9846 | |
9847 | gdb_assert (bl); | |
9848 | ||
9849 | address_start = bl->address; | |
9850 | address_end = address_start + bl->length - 1; | |
9851 | ||
112e8700 | 9852 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9853 | stb.printf ("[%s, %s]", |
9854 | print_core_address (bl->gdbarch, address_start), | |
9855 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9856 | uiout->field_stream ("addr", stb); |
9857 | uiout->text ("\n"); | |
f1310107 TJB |
9858 | } |
9859 | ||
9860 | /* Implement the "print_mention" breakpoint_ops method for | |
9861 | ranged breakpoints. */ | |
9862 | ||
9863 | static void | |
9864 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9865 | { | |
9866 | struct bp_location *bl = b->loc; | |
79a45e25 | 9867 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9868 | |
9869 | gdb_assert (bl); | |
9870 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9871 | ||
2d33446d TT |
9872 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9873 | b->number, paddress (bl->gdbarch, bl->address), | |
9874 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9875 | } |
9876 | ||
9877 | /* Implement the "print_recreate" breakpoint_ops method for | |
9878 | ranged breakpoints. */ | |
9879 | ||
9880 | static void | |
9881 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9882 | { | |
f00aae0f | 9883 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9884 | event_location_to_string (b->location.get ()), |
9885 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9886 | print_recreate_thread (b, fp); |
f1310107 TJB |
9887 | } |
9888 | ||
9889 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9890 | ||
2060206e | 9891 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9892 | |
9893 | /* Find the address where the end of the breakpoint range should be | |
9894 | placed, given the SAL of the end of the range. This is so that if | |
9895 | the user provides a line number, the end of the range is set to the | |
9896 | last instruction of the given line. */ | |
9897 | ||
9898 | static CORE_ADDR | |
9899 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9900 | { | |
9901 | CORE_ADDR end; | |
9902 | ||
9903 | /* If the user provided a PC value, use it. Otherwise, | |
9904 | find the address of the end of the given location. */ | |
9905 | if (sal.explicit_pc) | |
9906 | end = sal.pc; | |
9907 | else | |
9908 | { | |
9909 | int ret; | |
9910 | CORE_ADDR start; | |
9911 | ||
9912 | ret = find_line_pc_range (sal, &start, &end); | |
9913 | if (!ret) | |
9914 | error (_("Could not find location of the end of the range.")); | |
9915 | ||
9916 | /* find_line_pc_range returns the start of the next line. */ | |
9917 | end--; | |
9918 | } | |
9919 | ||
9920 | return end; | |
9921 | } | |
9922 | ||
9923 | /* Implement the "break-range" CLI command. */ | |
9924 | ||
9925 | static void | |
0b39b52e | 9926 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9927 | { |
f2fc3015 | 9928 | const char *arg_start; |
f1310107 TJB |
9929 | struct linespec_result canonical_start, canonical_end; |
9930 | int bp_count, can_use_bp, length; | |
9931 | CORE_ADDR end; | |
9932 | struct breakpoint *b; | |
f1310107 TJB |
9933 | |
9934 | /* We don't support software ranged breakpoints. */ | |
9935 | if (target_ranged_break_num_registers () < 0) | |
9936 | error (_("This target does not support hardware ranged breakpoints.")); | |
9937 | ||
9938 | bp_count = hw_breakpoint_used_count (); | |
9939 | bp_count += target_ranged_break_num_registers (); | |
9940 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9941 | bp_count, 0); | |
9942 | if (can_use_bp < 0) | |
9943 | error (_("Hardware breakpoints used exceeds limit.")); | |
9944 | ||
f8eba3c6 | 9945 | arg = skip_spaces (arg); |
f1310107 TJB |
9946 | if (arg == NULL || arg[0] == '\0') |
9947 | error(_("No address range specified.")); | |
9948 | ||
f8eba3c6 | 9949 | arg_start = arg; |
ffc2605c TT |
9950 | event_location_up start_location = string_to_event_location (&arg, |
9951 | current_language); | |
9952 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9953 | |
9954 | if (arg[0] != ',') | |
9955 | error (_("Too few arguments.")); | |
6c5b2ebe | 9956 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9957 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9958 | |
6c5b2ebe | 9959 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9960 | |
6c5b2ebe PA |
9961 | if (canonical_start.lsals.size () > 1 |
9962 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9963 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9964 | ||
6c5b2ebe | 9965 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9966 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9967 | |
9968 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9969 | arg = skip_spaces (arg); |
f1310107 TJB |
9970 | |
9971 | /* Parse the end location. */ | |
9972 | ||
f1310107 TJB |
9973 | arg_start = arg; |
9974 | ||
f8eba3c6 | 9975 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9976 | parse_breakpoint_sals because we need to specify the start location's |
9977 | symtab and line as the default symtab and line for the end of the | |
9978 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9979 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9980 | event_location_up end_location = string_to_event_location (&arg, |
9981 | current_language); | |
9982 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9983 | sal_start.symtab, sal_start.line, |
9984 | &canonical_end, NULL, NULL); | |
9985 | ||
6c5b2ebe | 9986 | if (canonical_end.lsals.empty ()) |
f1310107 | 9987 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9988 | |
6c5b2ebe PA |
9989 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9990 | if (canonical_end.lsals.size () > 1 | |
9991 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9992 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9993 | ||
6c5b2ebe | 9994 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9995 | |
9996 | end = find_breakpoint_range_end (sal_end); | |
9997 | if (sal_start.pc > end) | |
177b42fe | 9998 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9999 | |
10000 | length = end - sal_start.pc + 1; | |
10001 | if (length < 0) | |
10002 | /* Length overflowed. */ | |
10003 | error (_("Address range too large.")); | |
10004 | else if (length == 1) | |
10005 | { | |
10006 | /* This range is simple enough to be handled by | |
10007 | the `hbreak' command. */ | |
81b1e71c | 10008 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10009 | |
10010 | return; | |
10011 | } | |
10012 | ||
10013 | /* Now set up the breakpoint. */ | |
10014 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10015 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10016 | set_breakpoint_count (breakpoint_count + 1); |
10017 | b->number = breakpoint_count; | |
10018 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10019 | b->location = std::move (start_location); |
10020 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10021 | b->loc->length = length; |
10022 | ||
f1310107 | 10023 | mention (b); |
76727919 | 10024 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 10025 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10026 | } |
10027 | ||
4a64f543 MS |
10028 | /* Return non-zero if EXP is verified as constant. Returned zero |
10029 | means EXP is variable. Also the constant detection may fail for | |
10030 | some constant expressions and in such case still falsely return | |
10031 | zero. */ | |
2e6e3d9c | 10032 | |
dab72643 | 10033 | static bool |
65d79d4b SDJ |
10034 | watchpoint_exp_is_const (const struct expression *exp) |
10035 | { | |
1eaebe02 | 10036 | return exp->op->constant_p (); |
65d79d4b SDJ |
10037 | } |
10038 | ||
c1fc2657 | 10039 | /* Watchpoint destructor. */ |
3a5c3e22 | 10040 | |
c1fc2657 | 10041 | watchpoint::~watchpoint () |
3a5c3e22 | 10042 | { |
c1fc2657 SM |
10043 | xfree (this->exp_string); |
10044 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10045 | } |
10046 | ||
348d480f PA |
10047 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10048 | ||
10049 | static void | |
10050 | re_set_watchpoint (struct breakpoint *b) | |
10051 | { | |
3a5c3e22 PA |
10052 | struct watchpoint *w = (struct watchpoint *) b; |
10053 | ||
348d480f PA |
10054 | /* Watchpoint can be either on expression using entirely global |
10055 | variables, or it can be on local variables. | |
10056 | ||
10057 | Watchpoints of the first kind are never auto-deleted, and even | |
10058 | persist across program restarts. Since they can use variables | |
10059 | from shared libraries, we need to reparse expression as libraries | |
10060 | are loaded and unloaded. | |
10061 | ||
10062 | Watchpoints on local variables can also change meaning as result | |
10063 | of solib event. For example, if a watchpoint uses both a local | |
10064 | and a global variables in expression, it's a local watchpoint, | |
10065 | but unloading of a shared library will make the expression | |
10066 | invalid. This is not a very common use case, but we still | |
10067 | re-evaluate expression, to avoid surprises to the user. | |
10068 | ||
10069 | Note that for local watchpoints, we re-evaluate it only if | |
10070 | watchpoints frame id is still valid. If it's not, it means the | |
10071 | watchpoint is out of scope and will be deleted soon. In fact, | |
10072 | I'm not sure we'll ever be called in this case. | |
10073 | ||
10074 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10075 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10076 | |
3a5c3e22 PA |
10077 | Don't do anything about disabled watchpoints, since they will be |
10078 | reevaluated again when enabled. */ | |
10079 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10080 | } |
10081 | ||
77b06cd7 TJB |
10082 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10083 | ||
10084 | static int | |
10085 | insert_watchpoint (struct bp_location *bl) | |
10086 | { | |
3a5c3e22 PA |
10087 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10088 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10089 | |
10090 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10091 | w->cond_exp.get ()); |
77b06cd7 TJB |
10092 | } |
10093 | ||
10094 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10095 | ||
10096 | static int | |
73971819 | 10097 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10098 | { |
3a5c3e22 PA |
10099 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10100 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10101 | |
10102 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10103 | w->cond_exp.get ()); |
e09342b5 TJB |
10104 | } |
10105 | ||
e09342b5 | 10106 | static int |
348d480f | 10107 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10108 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10109 | const struct target_waitstatus *ws) |
e09342b5 | 10110 | { |
348d480f | 10111 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10112 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10113 | |
348d480f PA |
10114 | /* Continuable hardware watchpoints are treated as non-existent if the |
10115 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10116 | some data address). Otherwise gdb won't stop on a break instruction | |
10117 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10118 | been defined. Also skip watchpoints which we know did not trigger | |
10119 | (did not match the data address). */ | |
10120 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10121 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10122 | return 0; |
9c06b0b4 | 10123 | |
348d480f | 10124 | return 1; |
9c06b0b4 TJB |
10125 | } |
10126 | ||
348d480f PA |
10127 | static void |
10128 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10129 | { |
348d480f | 10130 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10131 | |
348d480f | 10132 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10133 | } |
10134 | ||
10135 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10136 | hardware watchpoints. */ |
9c06b0b4 TJB |
10137 | |
10138 | static int | |
348d480f | 10139 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10140 | { |
3a5c3e22 PA |
10141 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10142 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10143 | |
10144 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10145 | } |
10146 | ||
10147 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10148 | hardware watchpoints. */ |
9c06b0b4 TJB |
10149 | |
10150 | static int | |
348d480f | 10151 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10152 | { |
efa80663 PA |
10153 | /* Read and access watchpoints only work with hardware support. */ |
10154 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10155 | } |
10156 | ||
9c06b0b4 | 10157 | static enum print_stop_action |
348d480f | 10158 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10159 | { |
348d480f | 10160 | struct breakpoint *b; |
348d480f | 10161 | enum print_stop_action result; |
3a5c3e22 | 10162 | struct watchpoint *w; |
79a45e25 | 10163 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10164 | |
10165 | gdb_assert (bs->bp_location_at != NULL); | |
10166 | ||
348d480f | 10167 | b = bs->breakpoint_at; |
3a5c3e22 | 10168 | w = (struct watchpoint *) b; |
348d480f | 10169 | |
f303dbd6 PA |
10170 | annotate_watchpoint (b->number); |
10171 | maybe_print_thread_hit_breakpoint (uiout); | |
10172 | ||
d7e74731 PA |
10173 | string_file stb; |
10174 | ||
76f9c9cf | 10175 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10176 | switch (b->type) |
10177 | { | |
348d480f | 10178 | case bp_watchpoint: |
9c06b0b4 | 10179 | case bp_hardware_watchpoint: |
112e8700 SM |
10180 | if (uiout->is_mi_like_p ()) |
10181 | uiout->field_string | |
10182 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10183 | mention (b); |
76f9c9cf | 10184 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10185 | uiout->text ("\nOld value = "); |
850645cf | 10186 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10187 | uiout->field_stream ("old", stb); |
10188 | uiout->text ("\nNew value = "); | |
850645cf | 10189 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10190 | uiout->field_stream ("new", stb); |
10191 | uiout->text ("\n"); | |
348d480f PA |
10192 | /* More than one watchpoint may have been triggered. */ |
10193 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10194 | break; |
10195 | ||
10196 | case bp_read_watchpoint: | |
112e8700 SM |
10197 | if (uiout->is_mi_like_p ()) |
10198 | uiout->field_string | |
10199 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10200 | mention (b); |
76f9c9cf | 10201 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10202 | uiout->text ("\nValue = "); |
850645cf | 10203 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10204 | uiout->field_stream ("value", stb); |
10205 | uiout->text ("\n"); | |
348d480f | 10206 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10207 | break; |
10208 | ||
10209 | case bp_access_watchpoint: | |
348d480f PA |
10210 | if (bs->old_val != NULL) |
10211 | { | |
112e8700 SM |
10212 | if (uiout->is_mi_like_p ()) |
10213 | uiout->field_string | |
10214 | ("reason", | |
348d480f PA |
10215 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10216 | mention (b); | |
76f9c9cf | 10217 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10218 | uiout->text ("\nOld value = "); |
850645cf | 10219 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10220 | uiout->field_stream ("old", stb); |
10221 | uiout->text ("\nNew value = "); | |
348d480f PA |
10222 | } |
10223 | else | |
10224 | { | |
10225 | mention (b); | |
112e8700 SM |
10226 | if (uiout->is_mi_like_p ()) |
10227 | uiout->field_string | |
10228 | ("reason", | |
348d480f | 10229 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10230 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10231 | uiout->text ("\nValue = "); |
348d480f | 10232 | } |
850645cf | 10233 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10234 | uiout->field_stream ("new", stb); |
10235 | uiout->text ("\n"); | |
348d480f | 10236 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10237 | break; |
10238 | default: | |
348d480f | 10239 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10240 | } |
10241 | ||
348d480f PA |
10242 | return result; |
10243 | } | |
10244 | ||
10245 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10246 | watchpoints. */ | |
10247 | ||
10248 | static void | |
10249 | print_mention_watchpoint (struct breakpoint *b) | |
10250 | { | |
3a5c3e22 | 10251 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10252 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10253 | const char *tuple_name; |
348d480f PA |
10254 | |
10255 | switch (b->type) | |
10256 | { | |
10257 | case bp_watchpoint: | |
112e8700 | 10258 | uiout->text ("Watchpoint "); |
46b9c129 | 10259 | tuple_name = "wpt"; |
348d480f PA |
10260 | break; |
10261 | case bp_hardware_watchpoint: | |
112e8700 | 10262 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10263 | tuple_name = "wpt"; |
348d480f PA |
10264 | break; |
10265 | case bp_read_watchpoint: | |
112e8700 | 10266 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10267 | tuple_name = "hw-rwpt"; |
348d480f PA |
10268 | break; |
10269 | case bp_access_watchpoint: | |
112e8700 | 10270 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10271 | tuple_name = "hw-awpt"; |
348d480f PA |
10272 | break; |
10273 | default: | |
10274 | internal_error (__FILE__, __LINE__, | |
10275 | _("Invalid hardware watchpoint type.")); | |
10276 | } | |
10277 | ||
46b9c129 | 10278 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10279 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10280 | uiout->text (": "); |
10281 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10282 | } |
10283 | ||
10284 | /* Implement the "print_recreate" breakpoint_ops method for | |
10285 | watchpoints. */ | |
10286 | ||
10287 | static void | |
10288 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10289 | { | |
3a5c3e22 PA |
10290 | struct watchpoint *w = (struct watchpoint *) b; |
10291 | ||
348d480f PA |
10292 | switch (b->type) |
10293 | { | |
10294 | case bp_watchpoint: | |
10295 | case bp_hardware_watchpoint: | |
10296 | fprintf_unfiltered (fp, "watch"); | |
10297 | break; | |
10298 | case bp_read_watchpoint: | |
10299 | fprintf_unfiltered (fp, "rwatch"); | |
10300 | break; | |
10301 | case bp_access_watchpoint: | |
10302 | fprintf_unfiltered (fp, "awatch"); | |
10303 | break; | |
10304 | default: | |
10305 | internal_error (__FILE__, __LINE__, | |
10306 | _("Invalid watchpoint type.")); | |
10307 | } | |
10308 | ||
3a5c3e22 | 10309 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10310 | print_recreate_thread (b, fp); |
348d480f PA |
10311 | } |
10312 | ||
427cd150 TT |
10313 | /* Implement the "explains_signal" breakpoint_ops method for |
10314 | watchpoints. */ | |
10315 | ||
47591c29 | 10316 | static int |
427cd150 TT |
10317 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10318 | { | |
10319 | /* A software watchpoint cannot cause a signal other than | |
10320 | GDB_SIGNAL_TRAP. */ | |
10321 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10322 | return 0; |
427cd150 | 10323 | |
47591c29 | 10324 | return 1; |
427cd150 TT |
10325 | } |
10326 | ||
348d480f PA |
10327 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10328 | ||
2060206e | 10329 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10330 | |
10331 | /* Implement the "insert" breakpoint_ops method for | |
10332 | masked hardware watchpoints. */ | |
10333 | ||
10334 | static int | |
10335 | insert_masked_watchpoint (struct bp_location *bl) | |
10336 | { | |
3a5c3e22 PA |
10337 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10338 | ||
10339 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10340 | bl->watchpoint_type); |
10341 | } | |
10342 | ||
10343 | /* Implement the "remove" breakpoint_ops method for | |
10344 | masked hardware watchpoints. */ | |
10345 | ||
10346 | static int | |
73971819 | 10347 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10348 | { |
3a5c3e22 PA |
10349 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10350 | ||
10351 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
dda83cd7 | 10352 | bl->watchpoint_type); |
348d480f PA |
10353 | } |
10354 | ||
10355 | /* Implement the "resources_needed" breakpoint_ops method for | |
10356 | masked hardware watchpoints. */ | |
10357 | ||
10358 | static int | |
10359 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10360 | { | |
3a5c3e22 PA |
10361 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10362 | ||
10363 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10364 | } |
10365 | ||
10366 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10367 | masked hardware watchpoints. */ | |
10368 | ||
10369 | static int | |
10370 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10371 | { | |
10372 | return 0; | |
10373 | } | |
10374 | ||
10375 | /* Implement the "print_it" breakpoint_ops method for | |
10376 | masked hardware watchpoints. */ | |
10377 | ||
10378 | static enum print_stop_action | |
10379 | print_it_masked_watchpoint (bpstat bs) | |
10380 | { | |
10381 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10382 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10383 | |
10384 | /* Masked watchpoints have only one location. */ | |
10385 | gdb_assert (b->loc && b->loc->next == NULL); | |
10386 | ||
f303dbd6 PA |
10387 | annotate_watchpoint (b->number); |
10388 | maybe_print_thread_hit_breakpoint (uiout); | |
10389 | ||
348d480f PA |
10390 | switch (b->type) |
10391 | { | |
10392 | case bp_hardware_watchpoint: | |
112e8700 SM |
10393 | if (uiout->is_mi_like_p ()) |
10394 | uiout->field_string | |
10395 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10396 | break; |
10397 | ||
10398 | case bp_read_watchpoint: | |
112e8700 SM |
10399 | if (uiout->is_mi_like_p ()) |
10400 | uiout->field_string | |
10401 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10402 | break; |
10403 | ||
10404 | case bp_access_watchpoint: | |
112e8700 SM |
10405 | if (uiout->is_mi_like_p ()) |
10406 | uiout->field_string | |
10407 | ("reason", | |
348d480f PA |
10408 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10409 | break; | |
10410 | default: | |
10411 | internal_error (__FILE__, __LINE__, | |
10412 | _("Invalid hardware watchpoint type.")); | |
10413 | } | |
10414 | ||
10415 | mention (b); | |
112e8700 | 10416 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10417 | Check the underlying instruction at PC for the memory\n\ |
10418 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10419 | uiout->text ("\n"); |
9c06b0b4 TJB |
10420 | |
10421 | /* More than one watchpoint may have been triggered. */ | |
10422 | return PRINT_UNKNOWN; | |
10423 | } | |
10424 | ||
10425 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10426 | masked hardware watchpoints. */ | |
10427 | ||
10428 | static void | |
10429 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10430 | struct ui_out *uiout) | |
10431 | { | |
3a5c3e22 PA |
10432 | struct watchpoint *w = (struct watchpoint *) b; |
10433 | ||
9c06b0b4 TJB |
10434 | /* Masked watchpoints have only one location. */ |
10435 | gdb_assert (b->loc && b->loc->next == NULL); | |
10436 | ||
112e8700 SM |
10437 | uiout->text ("\tmask "); |
10438 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10439 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10440 | } |
10441 | ||
10442 | /* Implement the "print_mention" breakpoint_ops method for | |
10443 | masked hardware watchpoints. */ | |
10444 | ||
10445 | static void | |
10446 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10447 | { | |
3a5c3e22 | 10448 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10449 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10450 | const char *tuple_name; |
9c06b0b4 TJB |
10451 | |
10452 | switch (b->type) | |
10453 | { | |
10454 | case bp_hardware_watchpoint: | |
112e8700 | 10455 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10456 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10457 | break; |
10458 | case bp_read_watchpoint: | |
112e8700 | 10459 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10460 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10461 | break; |
10462 | case bp_access_watchpoint: | |
112e8700 | 10463 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10464 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10465 | break; |
10466 | default: | |
10467 | internal_error (__FILE__, __LINE__, | |
10468 | _("Invalid hardware watchpoint type.")); | |
10469 | } | |
10470 | ||
46b9c129 | 10471 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10472 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10473 | uiout->text (": "); |
10474 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10475 | } |
10476 | ||
10477 | /* Implement the "print_recreate" breakpoint_ops method for | |
10478 | masked hardware watchpoints. */ | |
10479 | ||
10480 | static void | |
10481 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10482 | { | |
3a5c3e22 | 10483 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10484 | |
10485 | switch (b->type) | |
10486 | { | |
10487 | case bp_hardware_watchpoint: | |
10488 | fprintf_unfiltered (fp, "watch"); | |
10489 | break; | |
10490 | case bp_read_watchpoint: | |
10491 | fprintf_unfiltered (fp, "rwatch"); | |
10492 | break; | |
10493 | case bp_access_watchpoint: | |
10494 | fprintf_unfiltered (fp, "awatch"); | |
10495 | break; | |
10496 | default: | |
10497 | internal_error (__FILE__, __LINE__, | |
10498 | _("Invalid hardware watchpoint type.")); | |
10499 | } | |
10500 | ||
53807e9f TT |
10501 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, |
10502 | phex (w->hw_wp_mask, sizeof (CORE_ADDR))); | |
d9b3f62e | 10503 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10504 | } |
10505 | ||
10506 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10507 | ||
2060206e | 10508 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10509 | |
10510 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10511 | ||
f2478a7e | 10512 | static bool |
9c06b0b4 TJB |
10513 | is_masked_watchpoint (const struct breakpoint *b) |
10514 | { | |
10515 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10516 | } | |
10517 | ||
53a5351d | 10518 | /* accessflag: hw_write: watch write, |
dda83cd7 | 10519 | hw_read: watch read, |
53a5351d | 10520 | hw_access: watch access (read or write) */ |
c906108c | 10521 | static void |
bbc13ae3 | 10522 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 10523 | bool just_location, bool internal) |
c906108c | 10524 | { |
c1fc2657 | 10525 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10526 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10527 | struct value *result; |
bb9d5f81 | 10528 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10529 | const char *exp_start = NULL; |
10530 | const char *exp_end = NULL; | |
10531 | const char *tok, *end_tok; | |
9c06b0b4 | 10532 | int toklen = -1; |
bbc13ae3 KS |
10533 | const char *cond_start = NULL; |
10534 | const char *cond_end = NULL; | |
c906108c | 10535 | enum bptype bp_type; |
37e4754d | 10536 | int thread = -1; |
9c06b0b4 TJB |
10537 | /* Flag to indicate whether we are going to use masks for |
10538 | the hardware watchpoint. */ | |
2e362716 | 10539 | bool use_mask = false; |
9c06b0b4 | 10540 | CORE_ADDR mask = 0; |
c906108c | 10541 | |
37e4754d LM |
10542 | /* Make sure that we actually have parameters to parse. */ |
10543 | if (arg != NULL && arg[0] != '\0') | |
10544 | { | |
bbc13ae3 KS |
10545 | const char *value_start; |
10546 | ||
10547 | exp_end = arg + strlen (arg); | |
37e4754d | 10548 | |
9c06b0b4 TJB |
10549 | /* Look for "parameter value" pairs at the end |
10550 | of the arguments string. */ | |
bbc13ae3 | 10551 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10552 | { |
10553 | /* Skip whitespace at the end of the argument list. */ | |
10554 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10555 | tok--; | |
10556 | ||
10557 | /* Find the beginning of the last token. | |
10558 | This is the value of the parameter. */ | |
10559 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10560 | tok--; | |
10561 | value_start = tok + 1; | |
10562 | ||
10563 | /* Skip whitespace. */ | |
10564 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10565 | tok--; | |
10566 | ||
10567 | end_tok = tok; | |
10568 | ||
10569 | /* Find the beginning of the second to last token. | |
10570 | This is the parameter itself. */ | |
10571 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10572 | tok--; | |
10573 | tok++; | |
10574 | toklen = end_tok - tok + 1; | |
10575 | ||
61012eef | 10576 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10577 | { |
5d5658a1 | 10578 | struct thread_info *thr; |
9c06b0b4 TJB |
10579 | /* At this point we've found a "thread" token, which means |
10580 | the user is trying to set a watchpoint that triggers | |
10581 | only in a specific thread. */ | |
5d5658a1 | 10582 | const char *endp; |
37e4754d | 10583 | |
9c06b0b4 TJB |
10584 | if (thread != -1) |
10585 | error(_("You can specify only one thread.")); | |
37e4754d | 10586 | |
9c06b0b4 | 10587 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10588 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10589 | |
5d5658a1 | 10590 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10591 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10592 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10593 | |
5d5658a1 | 10594 | thread = thr->global_num; |
9c06b0b4 | 10595 | } |
61012eef | 10596 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10597 | { |
10598 | /* We've found a "mask" token, which means the user wants to | |
10599 | create a hardware watchpoint that is going to have the mask | |
10600 | facility. */ | |
10601 | struct value *mask_value, *mark; | |
37e4754d | 10602 | |
9c06b0b4 TJB |
10603 | if (use_mask) |
10604 | error(_("You can specify only one mask.")); | |
37e4754d | 10605 | |
2e362716 | 10606 | use_mask = just_location = true; |
37e4754d | 10607 | |
9c06b0b4 TJB |
10608 | mark = value_mark (); |
10609 | mask_value = parse_to_comma_and_eval (&value_start); | |
10610 | mask = value_as_address (mask_value); | |
10611 | value_free_to_mark (mark); | |
10612 | } | |
10613 | else | |
10614 | /* We didn't recognize what we found. We should stop here. */ | |
10615 | break; | |
37e4754d | 10616 | |
9c06b0b4 TJB |
10617 | /* Truncate the string and get rid of the "parameter value" pair before |
10618 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10619 | exp_end = tok; |
9c06b0b4 | 10620 | } |
37e4754d | 10621 | } |
bbc13ae3 KS |
10622 | else |
10623 | exp_end = arg; | |
37e4754d | 10624 | |
bbc13ae3 KS |
10625 | /* Parse the rest of the arguments. From here on out, everything |
10626 | is in terms of a newly allocated string instead of the original | |
10627 | ARG. */ | |
81b1e71c TT |
10628 | std::string expression (arg, exp_end - arg); |
10629 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10630 | innermost_block_tracker tracker; |
10631 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10632 | exp_end = arg; |
fa8a61dc TT |
10633 | /* Remove trailing whitespace from the expression before saving it. |
10634 | This makes the eventual display of the expression string a bit | |
10635 | prettier. */ | |
10636 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10637 | --exp_end; | |
10638 | ||
65d79d4b | 10639 | /* Checking if the expression is not constant. */ |
4d01a485 | 10640 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10641 | { |
10642 | int len; | |
10643 | ||
10644 | len = exp_end - exp_start; | |
10645 | while (len > 0 && isspace (exp_start[len - 1])) | |
10646 | len--; | |
10647 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10648 | } | |
10649 | ||
699bd4cf | 10650 | exp_valid_block = tracker.block (); |
b926417a | 10651 | struct value *mark = value_mark (); |
850645cf | 10652 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10653 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10654 | just_location); | |
06a64a0b | 10655 | |
850645cf | 10656 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10657 | { |
850645cf TT |
10658 | saved_bitpos = value_bitpos (val_as_value); |
10659 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10660 | } |
10661 | ||
850645cf | 10662 | value_ref_ptr val; |
06a64a0b TT |
10663 | if (just_location) |
10664 | { | |
9c06b0b4 TJB |
10665 | int ret; |
10666 | ||
06a64a0b | 10667 | exp_valid_block = NULL; |
850645cf | 10668 | val = release_value (value_addr (result)); |
06a64a0b | 10669 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10670 | |
10671 | if (use_mask) | |
10672 | { | |
850645cf | 10673 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10674 | mask); |
10675 | if (ret == -1) | |
10676 | error (_("This target does not support masked watchpoints.")); | |
10677 | else if (ret == -2) | |
10678 | error (_("Invalid mask or memory region.")); | |
10679 | } | |
06a64a0b | 10680 | } |
850645cf TT |
10681 | else if (val_as_value != NULL) |
10682 | val = release_value (val_as_value); | |
c906108c | 10683 | |
f1735a53 TT |
10684 | tok = skip_spaces (arg); |
10685 | end_tok = skip_to_space (tok); | |
c906108c SS |
10686 | |
10687 | toklen = end_tok - tok; | |
10688 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10689 | { | |
10690 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10691 | innermost_block_tracker if_tracker; |
10692 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10693 | |
10694 | /* The watchpoint expression may not be local, but the condition | |
10695 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10696 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10697 | |
c906108c SS |
10698 | cond_end = tok; |
10699 | } | |
10700 | if (*tok) | |
8a3fe4f8 | 10701 | error (_("Junk at end of command.")); |
c906108c | 10702 | |
441d7c93 PA |
10703 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10704 | ||
10705 | /* Save this because create_internal_breakpoint below invalidates | |
10706 | 'wp_frame'. */ | |
10707 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10708 | |
10709 | /* If the expression is "local", then set up a "watchpoint scope" | |
10710 | breakpoint at the point where we've left the scope of the watchpoint | |
10711 | expression. Create the scope breakpoint before the watchpoint, so | |
10712 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10713 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10714 | { |
441d7c93 PA |
10715 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10716 | ||
10717 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10718 | { |
441d7c93 PA |
10719 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10720 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10721 | ||
edb3359d | 10722 | scope_breakpoint |
441d7c93 | 10723 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10724 | bp_watchpoint_scope, |
10725 | &momentary_breakpoint_ops); | |
d983da9c | 10726 | |
441d7c93 PA |
10727 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10728 | wp_frame = NULL; | |
10729 | ||
edb3359d | 10730 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10731 | |
edb3359d DJ |
10732 | /* Automatically delete the breakpoint when it hits. */ |
10733 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10734 | |
edb3359d | 10735 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10736 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10737 | |
edb3359d | 10738 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10739 | scope_breakpoint->loc->gdbarch = caller_arch; |
10740 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10741 | scope_breakpoint->loc->address |
a6d9a66e UW |
10742 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10743 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10744 | scope_breakpoint->type); |
10745 | } | |
d983da9c DJ |
10746 | } |
10747 | ||
e8369a73 AB |
10748 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10749 | watchpoints here even if hardware watchpoints are turned off, a call | |
10750 | to update_watchpoint later in this function will cause the type to | |
10751 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10752 | ||
10753 | if (accessflag == hw_read) | |
10754 | bp_type = bp_read_watchpoint; | |
10755 | else if (accessflag == hw_access) | |
10756 | bp_type = bp_access_watchpoint; | |
10757 | else | |
10758 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10759 | |
b270e6f9 | 10760 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10761 | |
348d480f | 10762 | if (use_mask) |
b270e6f9 | 10763 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10764 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10765 | else |
b270e6f9 | 10766 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10767 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10768 | w->thread = thread; |
10769 | w->disposition = disp_donttouch; | |
10770 | w->pspace = current_program_space; | |
b22e99fd | 10771 | w->exp = std::move (exp); |
3a5c3e22 PA |
10772 | w->exp_valid_block = exp_valid_block; |
10773 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10774 | if (just_location) |
10775 | { | |
850645cf TT |
10776 | struct type *t = value_type (val.get ()); |
10777 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10778 | |
43cc5389 | 10779 | w->exp_string_reparse |
f16a9f57 | 10780 | = current_language->watch_location_expression (t, addr).release (); |
06a64a0b | 10781 | |
3a5c3e22 | 10782 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10783 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10784 | } |
10785 | else | |
3a5c3e22 | 10786 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10787 | |
10788 | if (use_mask) | |
10789 | { | |
3a5c3e22 | 10790 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10791 | } |
10792 | else | |
10793 | { | |
3a5c3e22 | 10794 | w->val = val; |
bb9d5f81 PP |
10795 | w->val_bitpos = saved_bitpos; |
10796 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10797 | w->val_valid = true; |
9c06b0b4 | 10798 | } |
77b06cd7 | 10799 | |
c906108c | 10800 | if (cond_start) |
c1fc2657 | 10801 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10802 | else |
c1fc2657 | 10803 | w->cond_string = 0; |
c5aa993b | 10804 | |
441d7c93 | 10805 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10806 | { |
441d7c93 | 10807 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10808 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10809 | } |
c906108c | 10810 | else |
f6bc2008 | 10811 | { |
3a5c3e22 PA |
10812 | w->watchpoint_frame = null_frame_id; |
10813 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10814 | } |
c906108c | 10815 | |
d983da9c | 10816 | if (scope_breakpoint != NULL) |
c906108c | 10817 | { |
d983da9c DJ |
10818 | /* The scope breakpoint is related to the watchpoint. We will |
10819 | need to act on them together. */ | |
c1fc2657 | 10820 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10821 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10822 | } |
d983da9c | 10823 | |
06a64a0b TT |
10824 | if (!just_location) |
10825 | value_free_to_mark (mark); | |
2d134ed3 | 10826 | |
b270e6f9 TT |
10827 | /* Finally update the new watchpoint. This creates the locations |
10828 | that should be inserted. */ | |
10829 | update_watchpoint (w.get (), 1); | |
a9634178 | 10830 | |
b270e6f9 | 10831 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10832 | } |
10833 | ||
e09342b5 | 10834 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10835 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10836 | |
c906108c | 10837 | static int |
a6535de1 | 10838 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10839 | { |
10840 | int found_memory_cnt = 0; | |
10841 | ||
10842 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10843 | if (!can_use_hw_watchpoints) |
c906108c | 10844 | return 0; |
c5aa993b | 10845 | |
a6535de1 TT |
10846 | gdb_assert (!vals.empty ()); |
10847 | struct value *head = vals[0].get (); | |
10848 | ||
5c44784c JM |
10849 | /* Make sure that the value of the expression depends only upon |
10850 | memory contents, and values computed from them within GDB. If we | |
10851 | find any register references or function calls, we can't use a | |
10852 | hardware watchpoint. | |
10853 | ||
10854 | The idea here is that evaluating an expression generates a series | |
10855 | of values, one holding the value of every subexpression. (The | |
10856 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10857 | a*b+c.) GDB's values hold almost enough information to establish | |
10858 | the criteria given above --- they identify memory lvalues, | |
10859 | register lvalues, computed values, etcetera. So we can evaluate | |
10860 | the expression, and then scan the chain of values that leaves | |
10861 | behind to decide whether we can detect any possible change to the | |
10862 | expression's final value using only hardware watchpoints. | |
10863 | ||
10864 | However, I don't think that the values returned by inferior | |
10865 | function calls are special in any way. So this function may not | |
10866 | notice that an expression involving an inferior function call | |
10867 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10868 | for (const value_ref_ptr &iter : vals) |
c906108c | 10869 | { |
a6535de1 TT |
10870 | struct value *v = iter.get (); |
10871 | ||
5c44784c | 10872 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10873 | { |
8464be76 DJ |
10874 | if (v != head && value_lazy (v)) |
10875 | /* A lazy memory lvalue in the chain is one that GDB never | |
10876 | needed to fetch; we either just used its address (e.g., | |
10877 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10878 | in `a,b'). This doesn't apply to HEAD; if that is | |
10879 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10880 | ; |
53a5351d | 10881 | else |
5c44784c JM |
10882 | { |
10883 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10884 | it with hardware watchpoints. */ |
df407dfe | 10885 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10886 | |
10887 | /* We only watch structs and arrays if user asked for it | |
10888 | explicitly, never if they just happen to appear in a | |
10889 | middle of some value chain. */ | |
10890 | if (v == head | |
78134374 SM |
10891 | || (vtype->code () != TYPE_CODE_STRUCT |
10892 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10893 | { |
42ae5230 | 10894 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10895 | int len; |
10896 | int num_regs; | |
10897 | ||
a9634178 | 10898 | len = (target_exact_watchpoints |
e09342b5 TJB |
10899 | && is_scalar_type_recursive (vtype))? |
10900 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10901 | |
e09342b5 TJB |
10902 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10903 | if (!num_regs) | |
2e70b7b9 MS |
10904 | return 0; |
10905 | else | |
e09342b5 | 10906 | found_memory_cnt += num_regs; |
2e70b7b9 | 10907 | } |
5c44784c | 10908 | } |
c5aa993b | 10909 | } |
5086187c AC |
10910 | else if (VALUE_LVAL (v) != not_lval |
10911 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10912 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10913 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10914 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10915 | } |
10916 | ||
10917 | /* The expression itself looks suitable for using a hardware | |
10918 | watchpoint, but give the target machine a chance to reject it. */ | |
10919 | return found_memory_cnt; | |
10920 | } | |
10921 | ||
8b93c638 | 10922 | void |
2e362716 | 10923 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10924 | { |
84f4c1fe | 10925 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10926 | } |
10927 | ||
a15a5258 AB |
10928 | /* Options for the watch, awatch, and rwatch commands. */ |
10929 | ||
10930 | struct watch_options | |
10931 | { | |
10932 | /* For -location. */ | |
10933 | bool location = false; | |
10934 | }; | |
10935 | ||
10936 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10937 | ||
10938 | Historically GDB always accepted both '-location' and '-l' flags for | |
10939 | these commands (both flags being synonyms). When converting to the | |
10940 | newer option scheme only '-location' is added here. That's fine (for | |
10941 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10942 | accepted, so '-l', '-loc', are now all accepted. | |
10943 | ||
10944 | What this means is that, if in the future, we add any new flag here | |
10945 | that starts with '-l' then this will break backward compatibility, so | |
10946 | please, don't do that! */ | |
10947 | ||
10948 | static const gdb::option::option_def watch_option_defs[] = { | |
10949 | gdb::option::flag_option_def<watch_options> { | |
10950 | "location", | |
10951 | [] (watch_options *opt) { return &opt->location; }, | |
10952 | N_("\ | |
10953 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10954 | -l can be used as a short form of -location."), | |
10955 | }, | |
10956 | }; | |
10957 | ||
10958 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
10959 | commands. */ | |
10960 | ||
10961 | static gdb::option::option_def_group | |
10962 | make_watch_options_def_group (watch_options *opts) | |
10963 | { | |
10964 | return {{watch_option_defs}, opts}; | |
10965 | } | |
10966 | ||
06a64a0b TT |
10967 | /* A helper function that looks for the "-location" argument and then |
10968 | calls watch_command_1. */ | |
10969 | ||
10970 | static void | |
0b39b52e | 10971 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 10972 | { |
a15a5258 AB |
10973 | watch_options opts; |
10974 | auto grp = make_watch_options_def_group (&opts); | |
10975 | gdb::option::process_options | |
10976 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
10977 | if (arg != nullptr && *arg == '\0') | |
10978 | arg = nullptr; | |
10979 | ||
10980 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
10981 | } | |
06a64a0b | 10982 | |
a15a5258 AB |
10983 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
10984 | static void | |
10985 | watch_command_completer (struct cmd_list_element *ignore, | |
10986 | completion_tracker &tracker, | |
10987 | const char *text, const char * /*word*/) | |
10988 | { | |
10989 | const auto group = make_watch_options_def_group (nullptr); | |
10990 | if (gdb::option::complete_options | |
10991 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
10992 | return; | |
06a64a0b | 10993 | |
a15a5258 AB |
10994 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
10995 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 10996 | } |
8926118c | 10997 | |
c5aa993b | 10998 | static void |
0b39b52e | 10999 | watch_command (const char *arg, int from_tty) |
c906108c | 11000 | { |
06a64a0b | 11001 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11002 | } |
11003 | ||
8b93c638 | 11004 | void |
2e362716 | 11005 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11006 | { |
84f4c1fe | 11007 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11008 | } |
8926118c | 11009 | |
c5aa993b | 11010 | static void |
0b39b52e | 11011 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11012 | { |
06a64a0b | 11013 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11014 | } |
11015 | ||
8b93c638 | 11016 | void |
2e362716 | 11017 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11018 | { |
84f4c1fe | 11019 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11020 | } |
8926118c | 11021 | |
c5aa993b | 11022 | static void |
0b39b52e | 11023 | awatch_command (const char *arg, int from_tty) |
c906108c | 11024 | { |
06a64a0b | 11025 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11026 | } |
c906108c | 11027 | \f |
c5aa993b | 11028 | |
cfc31633 PA |
11029 | /* Data for the FSM that manages the until(location)/advance commands |
11030 | in infcmd.c. Here because it uses the mechanisms of | |
11031 | breakpoints. */ | |
c906108c | 11032 | |
46e3ed7f | 11033 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 11034 | { |
46e3ed7f | 11035 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
11036 | int thread; |
11037 | ||
df631783 PA |
11038 | /* The breakpoint set at the return address in the caller frame, |
11039 | plus breakpoints at all the destination locations. */ | |
11040 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 11041 | |
46e3ed7f | 11042 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 11043 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
11044 | : thread_fsm (cmd_interp), |
11045 | thread (thread), | |
df631783 | 11046 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
11047 | { |
11048 | } | |
cfc31633 | 11049 | |
46e3ed7f TT |
11050 | void clean_up (struct thread_info *thread) override; |
11051 | bool should_stop (struct thread_info *thread) override; | |
11052 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
11053 | }; |
11054 | ||
cfc31633 PA |
11055 | /* Implementation of the 'should_stop' FSM method for the |
11056 | until(location)/advance commands. */ | |
11057 | ||
46e3ed7f TT |
11058 | bool |
11059 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 11060 | { |
df631783 PA |
11061 | for (const breakpoint_up &bp : breakpoints) |
11062 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11063 | bp.get ()) != NULL) | |
11064 | { | |
11065 | set_finished (); | |
11066 | break; | |
11067 | } | |
cfc31633 | 11068 | |
46e3ed7f | 11069 | return true; |
cfc31633 PA |
11070 | } |
11071 | ||
11072 | /* Implementation of the 'clean_up' FSM method for the | |
11073 | until(location)/advance commands. */ | |
11074 | ||
46e3ed7f TT |
11075 | void |
11076 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 11077 | { |
cfc31633 | 11078 | /* Clean up our temporary breakpoints. */ |
df631783 | 11079 | breakpoints.clear (); |
46e3ed7f | 11080 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
11081 | } |
11082 | ||
11083 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11084 | until(location)/advance commands. */ | |
11085 | ||
46e3ed7f TT |
11086 | enum async_reply_reason |
11087 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
11088 | { |
11089 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11090 | } |
11091 | ||
c906108c | 11092 | void |
f2fc3015 | 11093 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11094 | { |
8556afb4 PA |
11095 | struct frame_info *frame; |
11096 | struct gdbarch *frame_gdbarch; | |
11097 | struct frame_id stack_frame_id; | |
11098 | struct frame_id caller_frame_id; | |
186c406b TT |
11099 | int thread; |
11100 | struct thread_info *tp; | |
c906108c | 11101 | |
70509625 | 11102 | clear_proceed_status (0); |
c906108c SS |
11103 | |
11104 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11105 | this function. */ |
c5aa993b | 11106 | |
ffc2605c | 11107 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11108 | |
6c5b2ebe PA |
11109 | std::vector<symtab_and_line> sals |
11110 | = (last_displayed_sal_is_valid () | |
11111 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11112 | get_last_displayed_symtab (), | |
11113 | get_last_displayed_line ()) | |
11114 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11115 | NULL, NULL, 0)); |
c5aa993b | 11116 | |
df631783 | 11117 | if (sals.empty ()) |
8a3fe4f8 | 11118 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11119 | |
c906108c | 11120 | if (*arg) |
8a3fe4f8 | 11121 | error (_("Junk at end of arguments.")); |
c5aa993b | 11122 | |
186c406b | 11123 | tp = inferior_thread (); |
5d5658a1 | 11124 | thread = tp->global_num; |
186c406b | 11125 | |
8556afb4 PA |
11126 | /* Note linespec handling above invalidates the frame chain. |
11127 | Installing a breakpoint also invalidates the frame chain (as it | |
11128 | may need to switch threads), so do any frame handling before | |
11129 | that. */ | |
11130 | ||
11131 | frame = get_selected_frame (NULL); | |
11132 | frame_gdbarch = get_frame_arch (frame); | |
11133 | stack_frame_id = get_stack_frame_id (frame); | |
11134 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11135 | |
ae66c1fc EZ |
11136 | /* Keep within the current frame, or in frames called by the current |
11137 | one. */ | |
edb3359d | 11138 | |
df631783 | 11139 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
11140 | |
11141 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11142 | ||
883bc8d1 | 11143 | if (frame_id_p (caller_frame_id)) |
c906108c | 11144 | { |
883bc8d1 | 11145 | struct symtab_and_line sal2; |
cfc31633 | 11146 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11147 | |
11148 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11149 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 11150 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
11151 | |
11152 | breakpoint_up caller_breakpoint | |
11153 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
11154 | caller_frame_id, bp_until); | |
11155 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 11156 | |
883bc8d1 | 11157 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11158 | lj_deleter.emplace (thread); |
c906108c | 11159 | } |
c5aa993b | 11160 | |
c70a6932 JK |
11161 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11162 | frame = NULL; | |
11163 | ||
df631783 PA |
11164 | /* If the user told us to continue until a specified location, we |
11165 | don't specify a frame at which we need to stop. Otherwise, | |
11166 | specify the selected frame, because we want to stop only at the | |
11167 | very same frame. */ | |
11168 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
11169 | ||
11170 | for (symtab_and_line &sal : sals) | |
11171 | { | |
11172 | resolve_sal_pc (&sal); | |
11173 | ||
11174 | breakpoint_up location_breakpoint | |
11175 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
11176 | stop_frame_id, bp_until); | |
11177 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
11178 | } | |
883bc8d1 | 11179 | |
46e3ed7f | 11180 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
df631783 | 11181 | std::move (breakpoints)); |
f107f563 | 11182 | |
5419bdae TT |
11183 | if (lj_deleter) |
11184 | lj_deleter->release (); | |
f107f563 | 11185 | |
cfc31633 | 11186 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11187 | } |
ae66c1fc | 11188 | |
c906108c SS |
11189 | /* This function attempts to parse an optional "if <cond>" clause |
11190 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11191 | |
c906108c SS |
11192 | Else, it returns a pointer to the condition string. (It does not |
11193 | attempt to evaluate the string against a particular block.) And, | |
11194 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11195 | if clause in the arg string. */ |
53a5351d | 11196 | |
63160a43 PA |
11197 | const char * |
11198 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11199 | { |
63160a43 | 11200 | const char *cond_string; |
c5aa993b JM |
11201 | |
11202 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11203 | return NULL; |
c5aa993b | 11204 | |
4a64f543 | 11205 | /* Skip the "if" keyword. */ |
c906108c | 11206 | (*arg) += 2; |
c5aa993b | 11207 | |
c906108c | 11208 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11209 | condition string. */ |
f1735a53 | 11210 | *arg = skip_spaces (*arg); |
c906108c | 11211 | cond_string = *arg; |
c5aa993b | 11212 | |
4a64f543 MS |
11213 | /* Assume that the condition occupies the remainder of the arg |
11214 | string. */ | |
c906108c | 11215 | (*arg) += strlen (cond_string); |
c5aa993b | 11216 | |
c906108c SS |
11217 | return cond_string; |
11218 | } | |
c5aa993b | 11219 | |
c906108c SS |
11220 | /* Commands to deal with catching events, such as signals, exceptions, |
11221 | process start/exit, etc. */ | |
c5aa993b JM |
11222 | |
11223 | typedef enum | |
11224 | { | |
44feb3ce TT |
11225 | catch_fork_temporary, catch_vfork_temporary, |
11226 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11227 | } |
11228 | catch_fork_kind; | |
11229 | ||
c906108c | 11230 | static void |
eb4c3f4a | 11231 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11232 | struct cmd_list_element *command) |
c906108c | 11233 | { |
a6d9a66e | 11234 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11235 | const char *cond_string = NULL; |
44feb3ce | 11236 | catch_fork_kind fork_kind; |
44feb3ce TT |
11237 | |
11238 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
b650a282 SM |
11239 | bool temp = (fork_kind == catch_fork_temporary |
11240 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11241 | |
44feb3ce TT |
11242 | if (!arg) |
11243 | arg = ""; | |
f1735a53 | 11244 | arg = skip_spaces (arg); |
c5aa993b | 11245 | |
c906108c | 11246 | /* The allowed syntax is: |
c5aa993b JM |
11247 | catch [v]fork |
11248 | catch [v]fork if <cond> | |
11249 | ||
4a64f543 | 11250 | First, check if there's an if clause. */ |
c906108c | 11251 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11252 | |
c906108c | 11253 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11254 | error (_("Junk at end of arguments.")); |
c5aa993b | 11255 | |
c906108c | 11256 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11257 | and enable reporting of such events. */ |
c5aa993b JM |
11258 | switch (fork_kind) |
11259 | { | |
44feb3ce TT |
11260 | case catch_fork_temporary: |
11261 | case catch_fork_permanent: | |
b650a282 | 11262 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11263 | &catch_fork_breakpoint_ops); |
c906108c | 11264 | break; |
44feb3ce TT |
11265 | case catch_vfork_temporary: |
11266 | case catch_vfork_permanent: | |
b650a282 | 11267 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11268 | &catch_vfork_breakpoint_ops); |
c906108c | 11269 | break; |
c5aa993b | 11270 | default: |
8a3fe4f8 | 11271 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11272 | break; |
c5aa993b | 11273 | } |
c906108c SS |
11274 | } |
11275 | ||
11276 | static void | |
eb4c3f4a | 11277 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11278 | struct cmd_list_element *command) |
c906108c | 11279 | { |
a6d9a66e | 11280 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11281 | const char *cond_string = NULL; |
b650a282 | 11282 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
44feb3ce TT |
11283 | |
11284 | if (!arg) | |
11285 | arg = ""; | |
f1735a53 | 11286 | arg = skip_spaces (arg); |
c906108c SS |
11287 | |
11288 | /* The allowed syntax is: | |
c5aa993b JM |
11289 | catch exec |
11290 | catch exec if <cond> | |
c906108c | 11291 | |
4a64f543 | 11292 | First, check if there's an if clause. */ |
c906108c SS |
11293 | cond_string = ep_parse_optional_if_clause (&arg); |
11294 | ||
11295 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11296 | error (_("Junk at end of arguments.")); |
c906108c | 11297 | |
b270e6f9 | 11298 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
b650a282 | 11299 | init_catchpoint (c.get (), gdbarch, temp, cond_string, |
b4d90040 PA |
11300 | &catch_exec_breakpoint_ops); |
11301 | c->exec_pathname = NULL; | |
11302 | ||
b270e6f9 | 11303 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11304 | } |
c5aa993b | 11305 | |
9ac4176b | 11306 | void |
28010a5d PA |
11307 | init_ada_exception_breakpoint (struct breakpoint *b, |
11308 | struct gdbarch *gdbarch, | |
11309 | struct symtab_and_line sal, | |
f2fc3015 | 11310 | const char *addr_string, |
c0a91b2b | 11311 | const struct breakpoint_ops *ops, |
28010a5d | 11312 | int tempflag, |
349774ef | 11313 | int enabled, |
28010a5d | 11314 | int from_tty) |
f7f9143b | 11315 | { |
f7f9143b JB |
11316 | if (from_tty) |
11317 | { | |
5af949e3 UW |
11318 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11319 | if (!loc_gdbarch) | |
11320 | loc_gdbarch = gdbarch; | |
11321 | ||
6c95b8df PA |
11322 | describe_other_breakpoints (loc_gdbarch, |
11323 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b | 11324 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
dda83cd7 SM |
11325 | version for exception catchpoints, because two catchpoints |
11326 | used for different exception names will use the same address. | |
11327 | In this case, a "breakpoint ... also set at..." warning is | |
11328 | unproductive. Besides, the warning phrasing is also a bit | |
11329 | inappropriate, we should use the word catchpoint, and tell | |
11330 | the user what type of catchpoint it is. The above is good | |
11331 | enough for now, though. */ | |
f7f9143b JB |
11332 | } |
11333 | ||
f06f1252 | 11334 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11335 | |
349774ef | 11336 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11337 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11338 | b->location = string_to_event_location (&addr_string, |
11339 | language_def (language_ada)); | |
f7f9143b | 11340 | b->language = language_ada; |
f7f9143b JB |
11341 | } |
11342 | ||
c906108c SS |
11343 | \f |
11344 | ||
81b1e71c | 11345 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11346 | |
11347 | static int | |
81b1e71c | 11348 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11349 | { |
81b1e71c TT |
11350 | uintptr_t ua = (uintptr_t) a; |
11351 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11352 | |
81b1e71c | 11353 | if (a->number < b->number) |
8a2c437b | 11354 | return -1; |
81b1e71c | 11355 | else if (a->number > b->number) |
8a2c437b TT |
11356 | return 1; |
11357 | ||
11358 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11359 | the number 0. */ | |
11360 | if (ua < ub) | |
11361 | return -1; | |
94b0e70d | 11362 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11363 | } |
11364 | ||
80f8a6eb | 11365 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11366 | |
11367 | static void | |
0b39b52e | 11368 | clear_command (const char *arg, int from_tty) |
c906108c | 11369 | { |
c906108c | 11370 | int default_match; |
c906108c | 11371 | |
6c5b2ebe PA |
11372 | std::vector<symtab_and_line> decoded_sals; |
11373 | symtab_and_line last_sal; | |
11374 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11375 | if (arg) |
11376 | { | |
6c5b2ebe PA |
11377 | decoded_sals |
11378 | = decode_line_with_current_source (arg, | |
11379 | (DECODE_LINE_FUNFIRSTLINE | |
11380 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11381 | default_match = 0; |
6c5b2ebe | 11382 | sals = decoded_sals; |
c906108c SS |
11383 | } |
11384 | else | |
11385 | { | |
1bfeeb0f JL |
11386 | /* Set sal's line, symtab, pc, and pspace to the values |
11387 | corresponding to the last call to print_frame_info. If the | |
11388 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11389 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11390 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11391 | error (_("No source file specified.")); |
c906108c | 11392 | |
c906108c | 11393 | default_match = 1; |
6c5b2ebe | 11394 | sals = last_sal; |
c906108c SS |
11395 | } |
11396 | ||
4a64f543 MS |
11397 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11398 | seems, because all existing breakpoints typically have both | |
11399 | file/line and pc set. So, if clear is given file/line, we can | |
11400 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11401 | |
11402 | We only support clearing given the address explicitly | |
11403 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11404 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11405 | due to optimization, all in one block. |
4a64f543 MS |
11406 | |
11407 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11408 | PC corresponding to the same file:line, the breakpoint won't |
11409 | be cleared. We probably can still clear the breakpoint, but | |
11410 | since the other PC value is never presented to user, user | |
11411 | can only find it by guessing, and it does not seem important | |
11412 | to support that. */ | |
11413 | ||
4a64f543 MS |
11414 | /* For each line spec given, delete bps which correspond to it. Do |
11415 | it in two passes, solely to preserve the current behavior that | |
11416 | from_tty is forced true if we delete more than one | |
11417 | breakpoint. */ | |
c906108c | 11418 | |
81b1e71c | 11419 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11420 | for (const auto &sal : sals) |
c906108c | 11421 | { |
05cba821 JK |
11422 | const char *sal_fullname; |
11423 | ||
c906108c | 11424 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
11425 | If line given (pc == 0), clear all bpts on specified line. |
11426 | If defaulting, clear all bpts on default line | |
11427 | or at default pc. | |
c5aa993b | 11428 | |
dda83cd7 | 11429 | defaulting sal.pc != 0 tests to do |
c5aa993b | 11430 | |
dda83cd7 SM |
11431 | 0 1 pc |
11432 | 1 1 pc _and_ line | |
11433 | 0 0 line | |
11434 | 1 0 <can't happen> */ | |
c906108c | 11435 | |
05cba821 JK |
11436 | sal_fullname = (sal.symtab == NULL |
11437 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11438 | |
4a64f543 | 11439 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 11440 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 11441 | { |
0d381245 | 11442 | int match = 0; |
4a64f543 | 11443 | /* Are we going to delete b? */ |
cc60f2e3 | 11444 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 | 11445 | { |
40cb8ca5 | 11446 | for (bp_location *loc : b->locations ()) |
0d381245 | 11447 | { |
f8eba3c6 TT |
11448 | /* If the user specified file:line, don't allow a PC |
11449 | match. This matches historical gdb behavior. */ | |
11450 | int pc_match = (!sal.explicit_line | |
11451 | && sal.pc | |
11452 | && (loc->pspace == sal.pspace) | |
11453 | && (loc->address == sal.pc) | |
11454 | && (!section_is_overlay (loc->section) | |
11455 | || loc->section == sal.section)); | |
4aac40c8 TT |
11456 | int line_match = 0; |
11457 | ||
11458 | if ((default_match || sal.explicit_line) | |
2f202fde | 11459 | && loc->symtab != NULL |
05cba821 | 11460 | && sal_fullname != NULL |
4aac40c8 | 11461 | && sal.pspace == loc->pspace |
05cba821 JK |
11462 | && loc->line_number == sal.line |
11463 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11464 | sal_fullname) == 0) | |
11465 | line_match = 1; | |
4aac40c8 | 11466 | |
0d381245 VP |
11467 | if (pc_match || line_match) |
11468 | { | |
11469 | match = 1; | |
11470 | break; | |
11471 | } | |
11472 | } | |
11473 | } | |
11474 | ||
11475 | if (match) | |
81b1e71c | 11476 | found.push_back (b); |
c906108c | 11477 | } |
80f8a6eb | 11478 | } |
8a2c437b | 11479 | |
80f8a6eb | 11480 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11481 | if (found.empty ()) |
80f8a6eb MS |
11482 | { |
11483 | if (arg) | |
8a3fe4f8 | 11484 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11485 | else |
8a3fe4f8 | 11486 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11487 | } |
c906108c | 11488 | |
8a2c437b | 11489 | /* Remove duplicates from the vec. */ |
81b1e71c | 11490 | std::sort (found.begin (), found.end (), |
b926417a | 11491 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11492 | { |
b926417a | 11493 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11494 | }); |
11495 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11496 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11497 | { |
b926417a | 11498 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11499 | }), |
11500 | found.end ()); | |
8a2c437b | 11501 | |
81b1e71c | 11502 | if (found.size () > 1) |
4a64f543 | 11503 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11504 | if (from_tty) |
a3f17187 | 11505 | { |
81b1e71c | 11506 | if (found.size () == 1) |
a3f17187 AC |
11507 | printf_unfiltered (_("Deleted breakpoint ")); |
11508 | else | |
11509 | printf_unfiltered (_("Deleted breakpoints ")); | |
11510 | } | |
d6e956e5 | 11511 | |
81b1e71c | 11512 | for (breakpoint *iter : found) |
80f8a6eb | 11513 | { |
c5aa993b | 11514 | if (from_tty) |
81b1e71c TT |
11515 | printf_unfiltered ("%d ", iter->number); |
11516 | delete_breakpoint (iter); | |
c906108c | 11517 | } |
80f8a6eb MS |
11518 | if (from_tty) |
11519 | putchar_unfiltered ('\n'); | |
c906108c SS |
11520 | } |
11521 | \f | |
11522 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11523 | all breakpoints that are marked for deletion, whether hit or not. | |
11524 | This is called after any breakpoint is hit, or after errors. */ | |
11525 | ||
11526 | void | |
fba45db2 | 11527 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11528 | { |
c906108c | 11529 | for (; bs; bs = bs->next) |
f431efe5 PA |
11530 | if (bs->breakpoint_at |
11531 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11532 | && bs->stop) |
f431efe5 | 11533 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11534 | |
1428b37a | 11535 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 11536 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 11537 | delete_breakpoint (b); |
c906108c SS |
11538 | } |
11539 | ||
4a64f543 | 11540 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11541 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11542 | bl_address_is_meaningful says), secondarily by ordering first |
11543 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11544 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11545 | |
11546 | static int | |
39ef2f62 | 11547 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11548 | { |
876fa593 | 11549 | if (a->address != b->address) |
39ef2f62 | 11550 | return a->address < b->address; |
876fa593 | 11551 | |
dea2aa5f LM |
11552 | /* Sort locations at the same address by their pspace number, keeping |
11553 | locations of the same inferior (in a multi-inferior environment) | |
11554 | grouped. */ | |
11555 | ||
11556 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11557 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11558 | |
876fa593 | 11559 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11560 | if (a->permanent != b->permanent) |
39ef2f62 | 11561 | return a->permanent > b->permanent; |
876fa593 | 11562 | |
7f32a4d5 PA |
11563 | /* Sort by type in order to make duplicate determination easier. |
11564 | See update_global_location_list. This is kept in sync with | |
11565 | breakpoint_locations_match. */ | |
11566 | if (a->loc_type < b->loc_type) | |
11567 | return true; | |
11568 | ||
11569 | /* Likewise, for range-breakpoints, sort by length. */ | |
11570 | if (a->loc_type == bp_loc_hardware_breakpoint | |
11571 | && b->loc_type == bp_loc_hardware_breakpoint | |
11572 | && a->length < b->length) | |
11573 | return true; | |
11574 | ||
c56a97f9 JK |
11575 | /* Make the internal GDB representation stable across GDB runs |
11576 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11577 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11578 | |
11579 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11580 | return a->owner->number < b->owner->number; |
876fa593 | 11581 | |
39ef2f62 | 11582 | return a < b; |
876fa593 JK |
11583 | } |
11584 | ||
f5336ca5 PA |
11585 | /* Set bp_locations_placed_address_before_address_max and |
11586 | bp_locations_shadow_len_after_address_max according to the current | |
11587 | content of the bp_locations array. */ | |
f7545552 TT |
11588 | |
11589 | static void | |
f5336ca5 | 11590 | bp_locations_target_extensions_update (void) |
f7545552 | 11591 | { |
f5336ca5 PA |
11592 | bp_locations_placed_address_before_address_max = 0; |
11593 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 11594 | |
48d7020b | 11595 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
11596 | { |
11597 | CORE_ADDR start, end, addr; | |
11598 | ||
11599 | if (!bp_location_has_shadow (bl)) | |
11600 | continue; | |
11601 | ||
11602 | start = bl->target_info.placed_address; | |
11603 | end = start + bl->target_info.shadow_len; | |
11604 | ||
11605 | gdb_assert (bl->address >= start); | |
11606 | addr = bl->address - start; | |
f5336ca5 PA |
11607 | if (addr > bp_locations_placed_address_before_address_max) |
11608 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11609 | |
11610 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11611 | ||
11612 | gdb_assert (bl->address < end); | |
11613 | addr = end - bl->address; | |
f5336ca5 PA |
11614 | if (addr > bp_locations_shadow_len_after_address_max) |
11615 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11616 | } |
f7545552 TT |
11617 | } |
11618 | ||
1e4d1764 YQ |
11619 | /* Download tracepoint locations if they haven't been. */ |
11620 | ||
11621 | static void | |
11622 | download_tracepoint_locations (void) | |
11623 | { | |
dd2e65cc | 11624 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11625 | |
5ed8105e | 11626 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11627 | |
f6d17b2b | 11628 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
11629 | { |
11630 | struct tracepoint *t; | |
f2a8bc8a | 11631 | int bp_location_downloaded = 0; |
1e4d1764 | 11632 | |
7ed2c994 | 11633 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11634 | ? !may_insert_fast_tracepoints |
11635 | : !may_insert_tracepoints)) | |
11636 | continue; | |
11637 | ||
dd2e65cc YQ |
11638 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11639 | { | |
11640 | if (target_can_download_tracepoint ()) | |
11641 | can_download_tracepoint = TRIBOOL_TRUE; | |
11642 | else | |
11643 | can_download_tracepoint = TRIBOOL_FALSE; | |
11644 | } | |
11645 | ||
11646 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11647 | break; | |
11648 | ||
40cb8ca5 | 11649 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
11650 | { |
11651 | /* In tracepoint, locations are _never_ duplicated, so | |
11652 | should_be_inserted is equivalent to | |
11653 | unduplicated_should_be_inserted. */ | |
11654 | if (!should_be_inserted (bl) || bl->inserted) | |
11655 | continue; | |
1e4d1764 | 11656 | |
7ed2c994 | 11657 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11658 | |
7ed2c994 | 11659 | target_download_tracepoint (bl); |
1e4d1764 | 11660 | |
7ed2c994 | 11661 | bl->inserted = 1; |
f2a8bc8a | 11662 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11663 | } |
11664 | t = (struct tracepoint *) b; | |
11665 | t->number_on_target = b->number; | |
f2a8bc8a | 11666 | if (bp_location_downloaded) |
76727919 | 11667 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11668 | } |
1e4d1764 YQ |
11669 | } |
11670 | ||
934709f0 PW |
11671 | /* Swap the insertion/duplication state between two locations. */ |
11672 | ||
11673 | static void | |
11674 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11675 | { | |
11676 | const int left_inserted = left->inserted; | |
11677 | const int left_duplicate = left->duplicate; | |
b775012e | 11678 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11679 | const struct bp_target_info left_target_info = left->target_info; |
11680 | ||
1e4d1764 YQ |
11681 | /* Locations of tracepoints can never be duplicated. */ |
11682 | if (is_tracepoint (left->owner)) | |
11683 | gdb_assert (!left->duplicate); | |
11684 | if (is_tracepoint (right->owner)) | |
11685 | gdb_assert (!right->duplicate); | |
11686 | ||
934709f0 PW |
11687 | left->inserted = right->inserted; |
11688 | left->duplicate = right->duplicate; | |
b775012e | 11689 | left->needs_update = right->needs_update; |
934709f0 PW |
11690 | left->target_info = right->target_info; |
11691 | right->inserted = left_inserted; | |
11692 | right->duplicate = left_duplicate; | |
b775012e | 11693 | right->needs_update = left_needs_update; |
934709f0 PW |
11694 | right->target_info = left_target_info; |
11695 | } | |
11696 | ||
b775012e LM |
11697 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11698 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11699 | conditions on the target's side. Such conditions need to be updated on | |
11700 | the target. */ | |
11701 | ||
11702 | static void | |
11703 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11704 | { | |
b775012e LM |
11705 | CORE_ADDR address = 0; |
11706 | int pspace_num; | |
11707 | ||
11708 | address = bl->address; | |
11709 | pspace_num = bl->pspace->num; | |
11710 | ||
11711 | /* This is only meaningful if the target is | |
11712 | evaluating conditions and if the user has | |
11713 | opted for condition evaluation on the target's | |
11714 | side. */ | |
11715 | if (gdb_evaluates_breakpoint_condition_p () | |
11716 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11717 | return; | |
11718 | ||
11719 | /* Flag all breakpoint locations with this address and | |
11720 | the same program space as the location | |
11721 | as "its condition has changed". We need to | |
11722 | update the conditions on the target's side. */ | |
e0d9a270 | 11723 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 11724 | { |
b775012e LM |
11725 | if (!is_breakpoint (loc->owner) |
11726 | || pspace_num != loc->pspace->num) | |
11727 | continue; | |
11728 | ||
11729 | /* Flag the location appropriately. We use a different state to | |
11730 | let everyone know that we already updated the set of locations | |
11731 | with addr bl->address and program space bl->pspace. This is so | |
11732 | we don't have to keep calling these functions just to mark locations | |
11733 | that have already been marked. */ | |
11734 | loc->condition_changed = condition_updated; | |
11735 | ||
11736 | /* Free the agent expression bytecode as well. We will compute | |
11737 | it later on. */ | |
833177a4 | 11738 | loc->cond_bytecode.reset (); |
b775012e LM |
11739 | } |
11740 | } | |
7f32a4d5 | 11741 | |
44702360 PA |
11742 | /* Called whether new breakpoints are created, or existing breakpoints |
11743 | deleted, to update the global location list and recompute which | |
11744 | locations are duplicate of which. | |
b775012e | 11745 | |
04086b45 PA |
11746 | The INSERT_MODE flag determines whether locations may not, may, or |
11747 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11748 | info. */ | |
b60e7edf | 11749 | |
0d381245 | 11750 | static void |
44702360 | 11751 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11752 | { |
b775012e LM |
11753 | /* Last breakpoint location address that was marked for update. */ |
11754 | CORE_ADDR last_addr = 0; | |
11755 | /* Last breakpoint location program space that was marked for update. */ | |
11756 | int last_pspace_num = -1; | |
f7545552 | 11757 | |
2d134ed3 PA |
11758 | /* Used in the duplicates detection below. When iterating over all |
11759 | bp_locations, points to the first bp_location of a given address. | |
11760 | Breakpoints and watchpoints of different types are never | |
11761 | duplicates of each other. Keep one pointer for each type of | |
11762 | breakpoint/watchpoint, so we only need to loop over all locations | |
11763 | once. */ | |
11764 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11765 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11766 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11767 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11768 | |
f5336ca5 PA |
11769 | /* Saved former bp_locations array which we compare against the newly |
11770 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
11771 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
11772 | bp_locations.clear (); | |
876fa593 | 11773 | |
43892fdf | 11774 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 11775 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 11776 | bp_locations.push_back (loc); |
7f32a4d5 PA |
11777 | |
11778 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11779 | breakpoint. Do this before deciding whether locations are | |
11780 | duplicates. Also do this before sorting because sorting order | |
11781 | depends on location type. */ | |
5d51cd5d SM |
11782 | for (bp_location *loc : bp_locations) |
11783 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 11784 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 11785 | |
5d51cd5d | 11786 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 11787 | bp_location_is_less_than); |
876fa593 | 11788 | |
f5336ca5 | 11789 | bp_locations_target_extensions_update (); |
74960c60 | 11790 | |
4a64f543 MS |
11791 | /* Identify bp_location instances that are no longer present in the |
11792 | new list, and therefore should be freed. Note that it's not | |
11793 | necessary that those locations should be removed from inferior -- | |
11794 | if there's another location at the same address (previously | |
11795 | marked as duplicate), we don't need to remove/insert the | |
11796 | location. | |
876fa593 | 11797 | |
4a64f543 MS |
11798 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11799 | and former bp_location array state respectively. */ | |
876fa593 | 11800 | |
5d51cd5d SM |
11801 | size_t loc_i = 0; |
11802 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11803 | { |
e5dd4106 | 11804 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11805 | not, we have to free it. */ |
c7d46a38 | 11806 | int found_object = 0; |
20874c92 VP |
11807 | /* Tells if the location should remain inserted in the target. */ |
11808 | int keep_in_target = 0; | |
11809 | int removed = 0; | |
876fa593 | 11810 | |
4a64f543 MS |
11811 | /* Skip LOCP entries which will definitely never be needed. |
11812 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11813 | while (loc_i < bp_locations.size () |
11814 | && bp_locations[loc_i]->address < old_loc->address) | |
11815 | loc_i++; | |
c7d46a38 | 11816 | |
5d51cd5d SM |
11817 | for (size_t loc2_i = loc_i; |
11818 | (loc2_i < bp_locations.size () | |
11819 | && bp_locations[loc2_i]->address == old_loc->address); | |
11820 | loc2_i++) | |
c7d46a38 | 11821 | { |
b775012e LM |
11822 | /* Check if this is a new/duplicated location or a duplicated |
11823 | location that had its condition modified. If so, we want to send | |
11824 | its condition to the target if evaluation of conditions is taking | |
11825 | place there. */ | |
5d51cd5d | 11826 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11827 | && (last_addr != old_loc->address |
11828 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11829 | { |
5d51cd5d | 11830 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11831 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11832 | } |
b775012e | 11833 | |
5d51cd5d | 11834 | if (bp_locations[loc2_i] == old_loc) |
b775012e | 11835 | found_object = 1; |
c7d46a38 | 11836 | } |
74960c60 | 11837 | |
b775012e LM |
11838 | /* We have already handled this address, update it so that we don't |
11839 | have to go through updates again. */ | |
11840 | last_addr = old_loc->address; | |
11841 | ||
11842 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11843 | if (!found_object) | |
11844 | force_breakpoint_reinsertion (old_loc); | |
11845 | ||
4a64f543 MS |
11846 | /* If this location is no longer present, and inserted, look if |
11847 | there's maybe a new location at the same address. If so, | |
11848 | mark that one inserted, and don't remove this one. This is | |
11849 | needed so that we don't have a time window where a breakpoint | |
11850 | at certain location is not inserted. */ | |
74960c60 | 11851 | |
876fa593 | 11852 | if (old_loc->inserted) |
0d381245 | 11853 | { |
4a64f543 MS |
11854 | /* If the location is inserted now, we might have to remove |
11855 | it. */ | |
74960c60 | 11856 | |
876fa593 | 11857 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11858 | { |
4a64f543 MS |
11859 | /* The location is still present in the location list, |
11860 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11861 | keep_in_target = 1; |
74960c60 VP |
11862 | } |
11863 | else | |
11864 | { | |
b775012e LM |
11865 | /* This location still exists, but it won't be kept in the |
11866 | target since it may have been disabled. We proceed to | |
11867 | remove its target-side condition. */ | |
11868 | ||
4a64f543 MS |
11869 | /* The location is either no longer present, or got |
11870 | disabled. See if there's another location at the | |
11871 | same address, in which case we don't need to remove | |
11872 | this one from the target. */ | |
876fa593 | 11873 | |
2bdf28a0 | 11874 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11875 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11876 | { |
5d51cd5d SM |
11877 | for (size_t loc2_i = loc_i; |
11878 | (loc2_i < bp_locations.size () | |
11879 | && bp_locations[loc2_i]->address == old_loc->address); | |
11880 | loc2_i++) | |
876fa593 | 11881 | { |
5d51cd5d | 11882 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11883 | |
7f32a4d5 PA |
11884 | if (loc2 == old_loc) |
11885 | continue; | |
11886 | ||
2d134ed3 | 11887 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11888 | { |
85d721b8 PA |
11889 | /* Read watchpoint locations are switched to |
11890 | access watchpoints, if the former are not | |
11891 | supported, but the latter are. */ | |
11892 | if (is_hardware_watchpoint (old_loc->owner)) | |
11893 | { | |
11894 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11895 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11896 | } | |
11897 | ||
934709f0 PW |
11898 | /* loc2 is a duplicated location. We need to check |
11899 | if it should be inserted in case it will be | |
11900 | unduplicated. */ | |
7f32a4d5 | 11901 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11902 | { |
934709f0 | 11903 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11904 | keep_in_target = 1; |
11905 | break; | |
11906 | } | |
876fa593 JK |
11907 | } |
11908 | } | |
11909 | } | |
74960c60 VP |
11910 | } |
11911 | ||
20874c92 VP |
11912 | if (!keep_in_target) |
11913 | { | |
834c0d03 | 11914 | if (remove_breakpoint (old_loc)) |
20874c92 | 11915 | { |
4a64f543 MS |
11916 | /* This is just about all we can do. We could keep |
11917 | this location on the global list, and try to | |
11918 | remove it next time, but there's no particular | |
11919 | reason why we will succeed next time. | |
20874c92 | 11920 | |
4a64f543 MS |
11921 | Note that at this point, old_loc->owner is still |
11922 | valid, as delete_breakpoint frees the breakpoint | |
11923 | only after calling us. */ | |
3e43a32a MS |
11924 | printf_filtered (_("warning: Error removing " |
11925 | "breakpoint %d\n"), | |
876fa593 | 11926 | old_loc->owner->number); |
20874c92 VP |
11927 | } |
11928 | removed = 1; | |
11929 | } | |
0d381245 | 11930 | } |
74960c60 VP |
11931 | |
11932 | if (!found_object) | |
1c5cfe86 | 11933 | { |
fbea99ea | 11934 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11935 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11936 | { |
db82e815 PA |
11937 | /* This location was removed from the target. In |
11938 | non-stop mode, a race condition is possible where | |
11939 | we've removed a breakpoint, but stop events for that | |
11940 | breakpoint are already queued and will arrive later. | |
11941 | We apply an heuristic to be able to distinguish such | |
11942 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11943 | breakpoint location for a bit, and will retire it | |
11944 | after we see some number of events. The theory here | |
11945 | is that reporting of events should, "on the average", | |
11946 | be fair, so after a while we'll see events from all | |
11947 | threads that have anything of interest, and no longer | |
11948 | need to keep this breakpoint location around. We | |
11949 | don't hold locations forever so to reduce chances of | |
11950 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11951 | SIGTRAP. | |
11952 | ||
11953 | The heuristic failing can be disastrous on | |
11954 | decr_pc_after_break targets. | |
11955 | ||
11956 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11957 | if we fail to recognize a late breakpoint SIGTRAP, | |
11958 | because events_till_retirement has reached 0 too | |
11959 | soon, we'll fail to do the PC adjustment, and report | |
11960 | a random SIGTRAP to the user. When the user resumes | |
11961 | the inferior, it will most likely immediately crash | |
2dec564e | 11962 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11963 | corrupted, because of being resumed e.g., in the |
11964 | middle of a multi-byte instruction, or skipped a | |
11965 | one-byte instruction. This was actually seen happen | |
11966 | on native x86-linux, and should be less rare on | |
11967 | targets that do not support new thread events, like | |
11968 | remote, due to the heuristic depending on | |
11969 | thread_count. | |
11970 | ||
11971 | Mistaking a random SIGTRAP for a breakpoint trap | |
11972 | causes similar symptoms (PC adjustment applied when | |
11973 | it shouldn't), but then again, playing with SIGTRAPs | |
11974 | behind the debugger's back is asking for trouble. | |
11975 | ||
11976 | Since hardware watchpoint traps are always | |
11977 | distinguishable from other traps, so we don't need to | |
11978 | apply keep hardware watchpoint moribund locations | |
11979 | around. We simply always ignore hardware watchpoint | |
11980 | traps we can no longer explain. */ | |
11981 | ||
5b6d1e4f PA |
11982 | process_stratum_target *proc_target = nullptr; |
11983 | for (inferior *inf : all_inferiors ()) | |
11984 | if (inf->pspace == old_loc->pspace) | |
11985 | { | |
11986 | proc_target = inf->process_target (); | |
11987 | break; | |
11988 | } | |
11989 | if (proc_target != nullptr) | |
11990 | old_loc->events_till_retirement | |
11991 | = 3 * (thread_count (proc_target) + 1); | |
11992 | else | |
11993 | old_loc->events_till_retirement = 1; | |
876fa593 | 11994 | old_loc->owner = NULL; |
20874c92 | 11995 | |
1123588c | 11996 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11997 | } |
11998 | else | |
f431efe5 PA |
11999 | { |
12000 | old_loc->owner = NULL; | |
12001 | decref_bp_location (&old_loc); | |
12002 | } | |
20874c92 | 12003 | } |
74960c60 | 12004 | } |
1c5cfe86 | 12005 | |
348d480f PA |
12006 | /* Rescan breakpoints at the same address and section, marking the |
12007 | first one as "first" and any others as "duplicates". This is so | |
12008 | that the bpt instruction is only inserted once. If we have a | |
12009 | permanent breakpoint at the same place as BPT, make that one the | |
12010 | official one, and the rest as duplicates. Permanent breakpoints | |
12011 | are sorted first for the same address. | |
12012 | ||
12013 | Do the same for hardware watchpoints, but also considering the | |
12014 | watchpoint's type (regular/access/read) and length. */ | |
12015 | ||
12016 | bp_loc_first = NULL; | |
12017 | wp_loc_first = NULL; | |
12018 | awp_loc_first = NULL; | |
12019 | rwp_loc_first = NULL; | |
40cb8ca5 | 12020 | |
48d7020b | 12021 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
12022 | { |
12023 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12024 | non-NULL. */ | |
348d480f | 12025 | struct bp_location **loc_first_p; |
43892fdf | 12026 | breakpoint *b = loc->owner; |
348d480f | 12027 | |
6f380991 | 12028 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 12029 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
12030 | /* Don't detect duplicate for tracepoint locations because they are |
12031 | never duplicated. See the comments in field `duplicate' of | |
12032 | `struct bp_location'. */ | |
348d480f | 12033 | || is_tracepoint (b)) |
b775012e LM |
12034 | { |
12035 | /* Clear the condition modification flag. */ | |
12036 | loc->condition_changed = condition_unchanged; | |
12037 | continue; | |
12038 | } | |
348d480f | 12039 | |
348d480f PA |
12040 | if (b->type == bp_hardware_watchpoint) |
12041 | loc_first_p = &wp_loc_first; | |
12042 | else if (b->type == bp_read_watchpoint) | |
12043 | loc_first_p = &rwp_loc_first; | |
12044 | else if (b->type == bp_access_watchpoint) | |
12045 | loc_first_p = &awp_loc_first; | |
12046 | else | |
12047 | loc_first_p = &bp_loc_first; | |
12048 | ||
12049 | if (*loc_first_p == NULL | |
12050 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12051 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12052 | { | |
12053 | *loc_first_p = loc; | |
12054 | loc->duplicate = 0; | |
b775012e LM |
12055 | |
12056 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12057 | { | |
12058 | loc->needs_update = 1; | |
12059 | /* Clear the condition modification flag. */ | |
12060 | loc->condition_changed = condition_unchanged; | |
12061 | } | |
348d480f PA |
12062 | continue; |
12063 | } | |
12064 | ||
934709f0 PW |
12065 | |
12066 | /* This and the above ensure the invariant that the first location | |
12067 | is not duplicated, and is the inserted one. | |
12068 | All following are marked as duplicated, and are not inserted. */ | |
12069 | if (loc->inserted) | |
12070 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12071 | loc->duplicate = 1; |
12072 | ||
b775012e LM |
12073 | /* Clear the condition modification flag. */ |
12074 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12075 | } |
12076 | ||
a25a5a45 | 12077 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12078 | { |
04086b45 | 12079 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12080 | insert_breakpoint_locations (); |
12081 | else | |
12082 | { | |
44702360 PA |
12083 | /* Even though the caller told us to not insert new |
12084 | locations, we may still need to update conditions on the | |
12085 | target's side of breakpoints that were already inserted | |
12086 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12087 | only update conditions for locations that are marked |
12088 | "needs_update". */ | |
12089 | update_inserted_breakpoint_locations (); | |
12090 | } | |
12091 | } | |
348d480f | 12092 | |
04086b45 | 12093 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12094 | download_tracepoint_locations (); |
348d480f PA |
12095 | } |
12096 | ||
12097 | void | |
12098 | breakpoint_retire_moribund (void) | |
12099 | { | |
1123588c TT |
12100 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12101 | { | |
12102 | struct bp_location *loc = moribund_locations[ix]; | |
12103 | if (--(loc->events_till_retirement) == 0) | |
12104 | { | |
12105 | decref_bp_location (&loc); | |
12106 | unordered_remove (moribund_locations, ix); | |
12107 | --ix; | |
12108 | } | |
12109 | } | |
348d480f PA |
12110 | } |
12111 | ||
12112 | static void | |
44702360 | 12113 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12114 | { |
348d480f | 12115 | |
a70b8144 | 12116 | try |
492d29ea PA |
12117 | { |
12118 | update_global_location_list (insert_mode); | |
12119 | } | |
230d2906 | 12120 | catch (const gdb_exception_error &e) |
492d29ea PA |
12121 | { |
12122 | } | |
348d480f PA |
12123 | } |
12124 | ||
12125 | /* Clear BKP from a BPS. */ | |
12126 | ||
12127 | static void | |
12128 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12129 | { | |
12130 | bpstat bs; | |
12131 | ||
12132 | for (bs = bps; bs; bs = bs->next) | |
12133 | if (bs->breakpoint_at == bpt) | |
12134 | { | |
12135 | bs->breakpoint_at = NULL; | |
12136 | bs->old_val = NULL; | |
12137 | /* bs->commands will be freed later. */ | |
12138 | } | |
12139 | } | |
12140 | ||
12141 | /* Callback for iterate_over_threads. */ | |
12142 | static int | |
12143 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12144 | { | |
9a3c8263 | 12145 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12146 | |
12147 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12148 | return 0; | |
12149 | } | |
12150 | ||
12151 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12152 | callbacks. */ | |
12153 | ||
12154 | static void | |
12155 | say_where (struct breakpoint *b) | |
12156 | { | |
12157 | struct value_print_options opts; | |
12158 | ||
12159 | get_user_print_options (&opts); | |
12160 | ||
12161 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12162 | single string. */ | |
12163 | if (b->loc == NULL) | |
12164 | { | |
f00aae0f KS |
12165 | /* For pending locations, the output differs slightly based |
12166 | on b->extra_string. If this is non-NULL, it contains either | |
12167 | a condition or dprintf arguments. */ | |
12168 | if (b->extra_string == NULL) | |
12169 | { | |
12170 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12171 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12172 | } |
12173 | else if (b->type == bp_dprintf) | |
12174 | { | |
12175 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12176 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12177 | b->extra_string); |
12178 | } | |
12179 | else | |
12180 | { | |
12181 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12182 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12183 | b->extra_string); |
12184 | } | |
348d480f PA |
12185 | } |
12186 | else | |
12187 | { | |
2f202fde | 12188 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12189 | printf_filtered (" at %ps", |
12190 | styled_string (address_style.style (), | |
12191 | paddress (b->loc->gdbarch, | |
12192 | b->loc->address))); | |
2f202fde | 12193 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12194 | { |
12195 | /* If there is a single location, we can print the location | |
12196 | more nicely. */ | |
12197 | if (b->loc->next == NULL) | |
0bb296cb | 12198 | { |
6a831f06 PA |
12199 | const char *filename |
12200 | = symtab_to_filename_for_display (b->loc->symtab); | |
12201 | printf_filtered (": file %ps, line %d.", | |
12202 | styled_string (file_name_style.style (), | |
12203 | filename), | |
0bb296cb TT |
12204 | b->loc->line_number); |
12205 | } | |
f8eba3c6 TT |
12206 | else |
12207 | /* This is not ideal, but each location may have a | |
12208 | different file name, and this at least reflects the | |
12209 | real situation somewhat. */ | |
f00aae0f | 12210 | printf_filtered (": %s.", |
d28cd78a | 12211 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12212 | } |
348d480f PA |
12213 | |
12214 | if (b->loc->next) | |
12215 | { | |
12216 | struct bp_location *loc = b->loc; | |
12217 | int n = 0; | |
12218 | for (; loc; loc = loc->next) | |
12219 | ++n; | |
12220 | printf_filtered (" (%d locations)", n); | |
12221 | } | |
12222 | } | |
12223 | } | |
12224 | ||
5f486660 | 12225 | bp_location::~bp_location () |
348d480f | 12226 | { |
5f486660 | 12227 | xfree (function_name); |
348d480f PA |
12228 | } |
12229 | ||
c1fc2657 | 12230 | /* Destructor for the breakpoint base class. */ |
348d480f | 12231 | |
c1fc2657 | 12232 | breakpoint::~breakpoint () |
348d480f | 12233 | { |
c1fc2657 SM |
12234 | xfree (this->cond_string); |
12235 | xfree (this->extra_string); | |
348d480f PA |
12236 | } |
12237 | ||
40cb8ca5 SM |
12238 | /* See breakpoint.h. */ |
12239 | ||
12240 | bp_locations_range breakpoint::locations () | |
12241 | { | |
12242 | return bp_locations_range (this->loc); | |
12243 | } | |
12244 | ||
2060206e PA |
12245 | static struct bp_location * |
12246 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12247 | { |
5f486660 | 12248 | return new bp_location (self); |
348d480f PA |
12249 | } |
12250 | ||
2060206e PA |
12251 | static void |
12252 | base_breakpoint_re_set (struct breakpoint *b) | |
12253 | { | |
12254 | /* Nothing to re-set. */ | |
12255 | } | |
12256 | ||
12257 | #define internal_error_pure_virtual_called() \ | |
12258 | gdb_assert_not_reached ("pure virtual function called") | |
12259 | ||
12260 | static int | |
12261 | base_breakpoint_insert_location (struct bp_location *bl) | |
12262 | { | |
12263 | internal_error_pure_virtual_called (); | |
12264 | } | |
12265 | ||
12266 | static int | |
73971819 PA |
12267 | base_breakpoint_remove_location (struct bp_location *bl, |
12268 | enum remove_bp_reason reason) | |
2060206e PA |
12269 | { |
12270 | internal_error_pure_virtual_called (); | |
12271 | } | |
12272 | ||
12273 | static int | |
12274 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12275 | const address_space *aspace, |
09ac7c10 TT |
12276 | CORE_ADDR bp_addr, |
12277 | const struct target_waitstatus *ws) | |
2060206e PA |
12278 | { |
12279 | internal_error_pure_virtual_called (); | |
12280 | } | |
12281 | ||
12282 | static void | |
12283 | base_breakpoint_check_status (bpstat bs) | |
12284 | { | |
12285 | /* Always stop. */ | |
12286 | } | |
12287 | ||
12288 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12289 | errors. */ | |
12290 | ||
12291 | static int | |
12292 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12293 | { | |
12294 | internal_error_pure_virtual_called (); | |
12295 | } | |
12296 | ||
12297 | /* A "resources_needed" breakpoint_ops method that just internal | |
12298 | errors. */ | |
12299 | ||
12300 | static int | |
12301 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12302 | { | |
12303 | internal_error_pure_virtual_called (); | |
12304 | } | |
12305 | ||
12306 | static enum print_stop_action | |
12307 | base_breakpoint_print_it (bpstat bs) | |
12308 | { | |
12309 | internal_error_pure_virtual_called (); | |
12310 | } | |
12311 | ||
12312 | static void | |
12313 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12314 | struct ui_out *uiout) | |
12315 | { | |
12316 | /* nothing */ | |
12317 | } | |
12318 | ||
12319 | static void | |
12320 | base_breakpoint_print_mention (struct breakpoint *b) | |
12321 | { | |
12322 | internal_error_pure_virtual_called (); | |
12323 | } | |
12324 | ||
12325 | static void | |
12326 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12327 | { | |
12328 | internal_error_pure_virtual_called (); | |
12329 | } | |
12330 | ||
983af33b | 12331 | static void |
f00aae0f | 12332 | base_breakpoint_create_sals_from_location |
626d2320 | 12333 | (struct event_location *location, |
f00aae0f KS |
12334 | struct linespec_result *canonical, |
12335 | enum bptype type_wanted) | |
983af33b SDJ |
12336 | { |
12337 | internal_error_pure_virtual_called (); | |
12338 | } | |
12339 | ||
12340 | static void | |
12341 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12342 | struct linespec_result *c, | |
e1e01040 PA |
12343 | gdb::unique_xmalloc_ptr<char> cond_string, |
12344 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12345 | enum bptype type_wanted, |
12346 | enum bpdisp disposition, | |
12347 | int thread, | |
12348 | int task, int ignore_count, | |
12349 | const struct breakpoint_ops *o, | |
12350 | int from_tty, int enabled, | |
44f238bb | 12351 | int internal, unsigned flags) |
983af33b SDJ |
12352 | { |
12353 | internal_error_pure_virtual_called (); | |
12354 | } | |
12355 | ||
6c5b2ebe | 12356 | static std::vector<symtab_and_line> |
f00aae0f | 12357 | base_breakpoint_decode_location (struct breakpoint *b, |
626d2320 | 12358 | struct event_location *location, |
6c5b2ebe | 12359 | struct program_space *search_pspace) |
983af33b SDJ |
12360 | { |
12361 | internal_error_pure_virtual_called (); | |
12362 | } | |
12363 | ||
ab04a2af TT |
12364 | /* The default 'explains_signal' method. */ |
12365 | ||
47591c29 | 12366 | static int |
427cd150 | 12367 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12368 | { |
47591c29 | 12369 | return 1; |
ab04a2af TT |
12370 | } |
12371 | ||
9d6e6e84 HZ |
12372 | /* The default "after_condition_true" method. */ |
12373 | ||
12374 | static void | |
12375 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12376 | { | |
12377 | /* Nothing to do. */ | |
12378 | } | |
12379 | ||
ab04a2af | 12380 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12381 | { |
2060206e PA |
12382 | base_breakpoint_allocate_location, |
12383 | base_breakpoint_re_set, | |
12384 | base_breakpoint_insert_location, | |
12385 | base_breakpoint_remove_location, | |
12386 | base_breakpoint_breakpoint_hit, | |
12387 | base_breakpoint_check_status, | |
12388 | base_breakpoint_resources_needed, | |
12389 | base_breakpoint_works_in_software_mode, | |
12390 | base_breakpoint_print_it, | |
12391 | NULL, | |
12392 | base_breakpoint_print_one_detail, | |
12393 | base_breakpoint_print_mention, | |
983af33b | 12394 | base_breakpoint_print_recreate, |
5f700d83 | 12395 | base_breakpoint_create_sals_from_location, |
983af33b | 12396 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12397 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12398 | base_breakpoint_explains_signal, |
12399 | base_breakpoint_after_condition_true, | |
2060206e PA |
12400 | }; |
12401 | ||
12402 | /* Default breakpoint_ops methods. */ | |
12403 | ||
12404 | static void | |
348d480f PA |
12405 | bkpt_re_set (struct breakpoint *b) |
12406 | { | |
06edf0c0 | 12407 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12408 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12409 | { |
f00aae0f | 12410 | /* Anything without a location can't be re-set. */ |
348d480f | 12411 | delete_breakpoint (b); |
06edf0c0 | 12412 | return; |
348d480f | 12413 | } |
06edf0c0 PA |
12414 | |
12415 | breakpoint_re_set_default (b); | |
348d480f PA |
12416 | } |
12417 | ||
2060206e | 12418 | static int |
348d480f PA |
12419 | bkpt_insert_location (struct bp_location *bl) |
12420 | { | |
cd6c3b4f YQ |
12421 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12422 | ||
579c6ad9 | 12423 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12424 | bl->target_info.placed_address = addr; |
12425 | ||
348d480f | 12426 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12427 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12428 | else |
7c16b83e | 12429 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12430 | } |
12431 | ||
2060206e | 12432 | static int |
73971819 | 12433 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12434 | { |
12435 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12436 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12437 | else | |
73971819 | 12438 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12439 | } |
12440 | ||
2060206e | 12441 | static int |
348d480f | 12442 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12443 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12444 | const struct target_waitstatus *ws) |
348d480f | 12445 | { |
09ac7c10 | 12446 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12447 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12448 | return 0; |
12449 | ||
348d480f PA |
12450 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12451 | aspace, bp_addr)) | |
12452 | return 0; | |
12453 | ||
12454 | if (overlay_debugging /* unmapped overlay section */ | |
12455 | && section_is_overlay (bl->section) | |
12456 | && !section_is_mapped (bl->section)) | |
12457 | return 0; | |
12458 | ||
12459 | return 1; | |
12460 | } | |
12461 | ||
cd1608cc PA |
12462 | static int |
12463 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12464 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12465 | const struct target_waitstatus *ws) |
12466 | { | |
12467 | if (dprintf_style == dprintf_style_agent | |
12468 | && target_can_run_breakpoint_commands ()) | |
12469 | { | |
12470 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12471 | for this address it must be for a breakpoint that happens to | |
12472 | be set at the same address. */ | |
12473 | return 0; | |
12474 | } | |
12475 | ||
12476 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12477 | } | |
12478 | ||
2060206e | 12479 | static int |
348d480f PA |
12480 | bkpt_resources_needed (const struct bp_location *bl) |
12481 | { | |
12482 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12483 | ||
12484 | return 1; | |
12485 | } | |
12486 | ||
2060206e | 12487 | static enum print_stop_action |
348d480f PA |
12488 | bkpt_print_it (bpstat bs) |
12489 | { | |
348d480f PA |
12490 | struct breakpoint *b; |
12491 | const struct bp_location *bl; | |
001c8c33 | 12492 | int bp_temp; |
79a45e25 | 12493 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12494 | |
12495 | gdb_assert (bs->bp_location_at != NULL); | |
12496 | ||
b6433ede | 12497 | bl = bs->bp_location_at.get (); |
348d480f PA |
12498 | b = bs->breakpoint_at; |
12499 | ||
001c8c33 PA |
12500 | bp_temp = b->disposition == disp_del; |
12501 | if (bl->address != bl->requested_address) | |
12502 | breakpoint_adjustment_warning (bl->requested_address, | |
12503 | bl->address, | |
12504 | b->number, 1); | |
12505 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12506 | maybe_print_thread_hit_breakpoint (uiout); |
12507 | ||
112e8700 | 12508 | if (uiout->is_mi_like_p ()) |
348d480f | 12509 | { |
112e8700 | 12510 | uiout->field_string ("reason", |
001c8c33 | 12511 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12512 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12513 | } |
6a831f06 PA |
12514 | if (bp_temp) |
12515 | uiout->message ("Temporary breakpoint %pF, ", | |
12516 | signed_field ("bkptno", b->number)); | |
12517 | else | |
12518 | uiout->message ("Breakpoint %pF, ", | |
12519 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12520 | |
001c8c33 | 12521 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12522 | } |
12523 | ||
2060206e | 12524 | static void |
06edf0c0 PA |
12525 | bkpt_print_mention (struct breakpoint *b) |
12526 | { | |
112e8700 | 12527 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12528 | return; |
12529 | ||
12530 | switch (b->type) | |
12531 | { | |
12532 | case bp_breakpoint: | |
12533 | case bp_gnu_ifunc_resolver: | |
12534 | if (b->disposition == disp_del) | |
12535 | printf_filtered (_("Temporary breakpoint")); | |
12536 | else | |
12537 | printf_filtered (_("Breakpoint")); | |
12538 | printf_filtered (_(" %d"), b->number); | |
12539 | if (b->type == bp_gnu_ifunc_resolver) | |
12540 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12541 | break; | |
12542 | case bp_hardware_breakpoint: | |
12543 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12544 | break; | |
e7e0cddf SS |
12545 | case bp_dprintf: |
12546 | printf_filtered (_("Dprintf %d"), b->number); | |
12547 | break; | |
06edf0c0 PA |
12548 | } |
12549 | ||
12550 | say_where (b); | |
12551 | } | |
12552 | ||
2060206e | 12553 | static void |
06edf0c0 PA |
12554 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12555 | { | |
12556 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12557 | fprintf_unfiltered (fp, "tbreak"); | |
12558 | else if (tp->type == bp_breakpoint) | |
12559 | fprintf_unfiltered (fp, "break"); | |
12560 | else if (tp->type == bp_hardware_breakpoint | |
12561 | && tp->disposition == disp_del) | |
12562 | fprintf_unfiltered (fp, "thbreak"); | |
12563 | else if (tp->type == bp_hardware_breakpoint) | |
12564 | fprintf_unfiltered (fp, "hbreak"); | |
12565 | else | |
12566 | internal_error (__FILE__, __LINE__, | |
12567 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12568 | ||
f00aae0f | 12569 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12570 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12571 | |
12572 | /* Print out extra_string if this breakpoint is pending. It might | |
12573 | contain, for example, conditions that were set by the user. */ | |
12574 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12575 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12576 | ||
dd11a36c | 12577 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12578 | } |
12579 | ||
983af33b | 12580 | static void |
626d2320 | 12581 | bkpt_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12582 | struct linespec_result *canonical, |
12583 | enum bptype type_wanted) | |
983af33b | 12584 | { |
f00aae0f | 12585 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12586 | } |
12587 | ||
12588 | static void | |
12589 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12590 | struct linespec_result *canonical, | |
e1e01040 PA |
12591 | gdb::unique_xmalloc_ptr<char> cond_string, |
12592 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12593 | enum bptype type_wanted, |
12594 | enum bpdisp disposition, | |
12595 | int thread, | |
12596 | int task, int ignore_count, | |
12597 | const struct breakpoint_ops *ops, | |
12598 | int from_tty, int enabled, | |
44f238bb | 12599 | int internal, unsigned flags) |
983af33b | 12600 | { |
023fa29b | 12601 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12602 | std::move (cond_string), |
12603 | std::move (extra_string), | |
e7e0cddf | 12604 | type_wanted, |
983af33b SDJ |
12605 | disposition, thread, task, |
12606 | ignore_count, ops, from_tty, | |
44f238bb | 12607 | enabled, internal, flags); |
983af33b SDJ |
12608 | } |
12609 | ||
6c5b2ebe | 12610 | static std::vector<symtab_and_line> |
f00aae0f | 12611 | bkpt_decode_location (struct breakpoint *b, |
626d2320 | 12612 | struct event_location *location, |
6c5b2ebe | 12613 | struct program_space *search_pspace) |
983af33b | 12614 | { |
6c5b2ebe | 12615 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12616 | } |
12617 | ||
06edf0c0 PA |
12618 | /* Virtual table for internal breakpoints. */ |
12619 | ||
12620 | static void | |
12621 | internal_bkpt_re_set (struct breakpoint *b) | |
12622 | { | |
12623 | switch (b->type) | |
12624 | { | |
12625 | /* Delete overlay event and longjmp master breakpoints; they | |
12626 | will be reset later by breakpoint_re_set. */ | |
12627 | case bp_overlay_event: | |
12628 | case bp_longjmp_master: | |
12629 | case bp_std_terminate_master: | |
12630 | case bp_exception_master: | |
12631 | delete_breakpoint (b); | |
12632 | break; | |
12633 | ||
12634 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 12635 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
12636 | case bp_shlib_event: |
12637 | ||
12638 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12639 | it is set up, we do not want to touch it. */ | |
12640 | case bp_thread_event: | |
12641 | break; | |
12642 | } | |
12643 | } | |
12644 | ||
12645 | static void | |
12646 | internal_bkpt_check_status (bpstat bs) | |
12647 | { | |
a9b3a50f PA |
12648 | if (bs->breakpoint_at->type == bp_shlib_event) |
12649 | { | |
12650 | /* If requested, stop when the dynamic linker notifies GDB of | |
12651 | events. This allows the user to get control and place | |
12652 | breakpoints in initializer routines for dynamically loaded | |
12653 | objects (among other things). */ | |
12654 | bs->stop = stop_on_solib_events; | |
12655 | bs->print = stop_on_solib_events; | |
12656 | } | |
12657 | else | |
12658 | bs->stop = 0; | |
06edf0c0 PA |
12659 | } |
12660 | ||
12661 | static enum print_stop_action | |
12662 | internal_bkpt_print_it (bpstat bs) | |
12663 | { | |
06edf0c0 | 12664 | struct breakpoint *b; |
06edf0c0 | 12665 | |
06edf0c0 PA |
12666 | b = bs->breakpoint_at; |
12667 | ||
06edf0c0 PA |
12668 | switch (b->type) |
12669 | { | |
348d480f PA |
12670 | case bp_shlib_event: |
12671 | /* Did we stop because the user set the stop_on_solib_events | |
12672 | variable? (If so, we report this as a generic, "Stopped due | |
12673 | to shlib event" message.) */ | |
edcc5120 | 12674 | print_solib_event (0); |
348d480f PA |
12675 | break; |
12676 | ||
12677 | case bp_thread_event: | |
12678 | /* Not sure how we will get here. | |
12679 | GDB should not stop for these breakpoints. */ | |
12680 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12681 | break; |
12682 | ||
12683 | case bp_overlay_event: | |
12684 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12685 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12686 | break; |
12687 | ||
12688 | case bp_longjmp_master: | |
12689 | /* These should never be enabled. */ | |
12690 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12691 | break; |
12692 | ||
12693 | case bp_std_terminate_master: | |
12694 | /* These should never be enabled. */ | |
12695 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12696 | "gdb should not stop!\n")); | |
348d480f PA |
12697 | break; |
12698 | ||
12699 | case bp_exception_master: | |
12700 | /* These should never be enabled. */ | |
12701 | printf_filtered (_("Exception Master Breakpoint: " | |
12702 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12703 | break; |
12704 | } | |
12705 | ||
001c8c33 | 12706 | return PRINT_NOTHING; |
06edf0c0 PA |
12707 | } |
12708 | ||
12709 | static void | |
12710 | internal_bkpt_print_mention (struct breakpoint *b) | |
12711 | { | |
12712 | /* Nothing to mention. These breakpoints are internal. */ | |
12713 | } | |
12714 | ||
06edf0c0 PA |
12715 | /* Virtual table for momentary breakpoints */ |
12716 | ||
12717 | static void | |
12718 | momentary_bkpt_re_set (struct breakpoint *b) | |
12719 | { | |
12720 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12721 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12722 | Otherwise these should have been blown away via the cleanup chain |
12723 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12724 | } | |
12725 | ||
12726 | static void | |
12727 | momentary_bkpt_check_status (bpstat bs) | |
12728 | { | |
12729 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12730 | } | |
12731 | ||
12732 | static enum print_stop_action | |
12733 | momentary_bkpt_print_it (bpstat bs) | |
12734 | { | |
001c8c33 | 12735 | return PRINT_UNKNOWN; |
348d480f PA |
12736 | } |
12737 | ||
06edf0c0 PA |
12738 | static void |
12739 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12740 | { |
06edf0c0 | 12741 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12742 | } |
12743 | ||
e2e4d78b JK |
12744 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12745 | ||
12746 | It gets cleared already on the removal of the first one of such placed | |
12747 | breakpoints. This is OK as they get all removed altogether. */ | |
12748 | ||
c1fc2657 | 12749 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12750 | { |
c1fc2657 | 12751 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12752 | |
c1fc2657 | 12753 | if (tp != NULL) |
e2e4d78b | 12754 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12755 | } |
12756 | ||
55aa24fb SDJ |
12757 | /* Specific methods for probe breakpoints. */ |
12758 | ||
12759 | static int | |
12760 | bkpt_probe_insert_location (struct bp_location *bl) | |
12761 | { | |
12762 | int v = bkpt_insert_location (bl); | |
12763 | ||
12764 | if (v == 0) | |
12765 | { | |
12766 | /* The insertion was successful, now let's set the probe's semaphore | |
12767 | if needed. */ | |
935676c9 | 12768 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12769 | } |
12770 | ||
12771 | return v; | |
12772 | } | |
12773 | ||
12774 | static int | |
73971819 PA |
12775 | bkpt_probe_remove_location (struct bp_location *bl, |
12776 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12777 | { |
12778 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12779 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12780 | |
73971819 | 12781 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12782 | } |
12783 | ||
12784 | static void | |
626d2320 | 12785 | bkpt_probe_create_sals_from_location (struct event_location *location, |
5f700d83 | 12786 | struct linespec_result *canonical, |
f00aae0f | 12787 | enum bptype type_wanted) |
55aa24fb SDJ |
12788 | { |
12789 | struct linespec_sals lsal; | |
12790 | ||
c2f4122d | 12791 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12792 | lsal.canonical |
12793 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12794 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12795 | } |
12796 | ||
6c5b2ebe | 12797 | static std::vector<symtab_and_line> |
f00aae0f | 12798 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 12799 | struct event_location *location, |
6c5b2ebe | 12800 | struct program_space *search_pspace) |
55aa24fb | 12801 | { |
6c5b2ebe PA |
12802 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12803 | if (sals.empty ()) | |
55aa24fb | 12804 | error (_("probe not found")); |
6c5b2ebe | 12805 | return sals; |
55aa24fb SDJ |
12806 | } |
12807 | ||
348d480f | 12808 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12809 | |
348d480f PA |
12810 | static void |
12811 | tracepoint_re_set (struct breakpoint *b) | |
12812 | { | |
12813 | breakpoint_re_set_default (b); | |
12814 | } | |
876fa593 | 12815 | |
348d480f PA |
12816 | static int |
12817 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12818 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12819 | const struct target_waitstatus *ws) |
348d480f PA |
12820 | { |
12821 | /* By definition, the inferior does not report stops at | |
12822 | tracepoints. */ | |
12823 | return 0; | |
74960c60 VP |
12824 | } |
12825 | ||
12826 | static void | |
348d480f PA |
12827 | tracepoint_print_one_detail (const struct breakpoint *self, |
12828 | struct ui_out *uiout) | |
74960c60 | 12829 | { |
d9b3f62e | 12830 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12831 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12832 | { |
12833 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12834 | |
6a831f06 PA |
12835 | uiout->message ("\tmarker id is %pF\n", |
12836 | string_field ("static-tracepoint-marker-string-id", | |
12837 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12838 | } |
0d381245 VP |
12839 | } |
12840 | ||
a474d7c2 | 12841 | static void |
348d480f | 12842 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12843 | { |
112e8700 | 12844 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12845 | return; |
cc59ec59 | 12846 | |
348d480f PA |
12847 | switch (b->type) |
12848 | { | |
12849 | case bp_tracepoint: | |
12850 | printf_filtered (_("Tracepoint")); | |
12851 | printf_filtered (_(" %d"), b->number); | |
12852 | break; | |
12853 | case bp_fast_tracepoint: | |
12854 | printf_filtered (_("Fast tracepoint")); | |
12855 | printf_filtered (_(" %d"), b->number); | |
12856 | break; | |
12857 | case bp_static_tracepoint: | |
12858 | printf_filtered (_("Static tracepoint")); | |
12859 | printf_filtered (_(" %d"), b->number); | |
12860 | break; | |
12861 | default: | |
12862 | internal_error (__FILE__, __LINE__, | |
12863 | _("unhandled tracepoint type %d"), (int) b->type); | |
12864 | } | |
12865 | ||
12866 | say_where (b); | |
a474d7c2 PA |
12867 | } |
12868 | ||
348d480f | 12869 | static void |
d9b3f62e | 12870 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12871 | { |
d9b3f62e PA |
12872 | struct tracepoint *tp = (struct tracepoint *) self; |
12873 | ||
12874 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12875 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12876 | else if (self->type == bp_static_tracepoint) |
348d480f | 12877 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12878 | else if (self->type == bp_tracepoint) |
348d480f PA |
12879 | fprintf_unfiltered (fp, "trace"); |
12880 | else | |
12881 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12882 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12883 | |
f00aae0f | 12884 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12885 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12886 | print_recreate_thread (self, fp); |
12887 | ||
12888 | if (tp->pass_count) | |
12889 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12890 | } |
12891 | ||
983af33b | 12892 | static void |
626d2320 | 12893 | tracepoint_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12894 | struct linespec_result *canonical, |
12895 | enum bptype type_wanted) | |
983af33b | 12896 | { |
f00aae0f | 12897 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12898 | } |
12899 | ||
12900 | static void | |
12901 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12902 | struct linespec_result *canonical, | |
e1e01040 PA |
12903 | gdb::unique_xmalloc_ptr<char> cond_string, |
12904 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12905 | enum bptype type_wanted, |
12906 | enum bpdisp disposition, | |
12907 | int thread, | |
12908 | int task, int ignore_count, | |
12909 | const struct breakpoint_ops *ops, | |
12910 | int from_tty, int enabled, | |
44f238bb | 12911 | int internal, unsigned flags) |
983af33b | 12912 | { |
023fa29b | 12913 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12914 | std::move (cond_string), |
12915 | std::move (extra_string), | |
e7e0cddf | 12916 | type_wanted, |
983af33b SDJ |
12917 | disposition, thread, task, |
12918 | ignore_count, ops, from_tty, | |
44f238bb | 12919 | enabled, internal, flags); |
983af33b SDJ |
12920 | } |
12921 | ||
6c5b2ebe | 12922 | static std::vector<symtab_and_line> |
f00aae0f | 12923 | tracepoint_decode_location (struct breakpoint *b, |
626d2320 | 12924 | struct event_location *location, |
6c5b2ebe | 12925 | struct program_space *search_pspace) |
983af33b | 12926 | { |
6c5b2ebe | 12927 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12928 | } |
12929 | ||
2060206e | 12930 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12931 | |
bac7c5cf | 12932 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12933 | |
12934 | static void | |
f00aae0f | 12935 | tracepoint_probe_create_sals_from_location |
626d2320 | 12936 | (struct event_location *location, |
f00aae0f KS |
12937 | struct linespec_result *canonical, |
12938 | enum bptype type_wanted) | |
55aa24fb SDJ |
12939 | { |
12940 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12941 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12942 | } |
12943 | ||
6c5b2ebe | 12944 | static std::vector<symtab_and_line> |
f00aae0f | 12945 | tracepoint_probe_decode_location (struct breakpoint *b, |
626d2320 | 12946 | struct event_location *location, |
6c5b2ebe | 12947 | struct program_space *search_pspace) |
55aa24fb SDJ |
12948 | { |
12949 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12950 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12951 | } |
12952 | ||
5c2b4418 HZ |
12953 | /* Dprintf breakpoint_ops methods. */ |
12954 | ||
12955 | static void | |
12956 | dprintf_re_set (struct breakpoint *b) | |
12957 | { | |
12958 | breakpoint_re_set_default (b); | |
12959 | ||
f00aae0f KS |
12960 | /* extra_string should never be non-NULL for dprintf. */ |
12961 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12962 | |
12963 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12964 | 2 - create a dprintf, which resolves fine. | |
12965 | 3 - disconnect from target 1 | |
12966 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12967 | ||
12968 | After steps #3/#4, you'll want the dprintf command list to | |
12969 | be updated, because target 1 and 2 may well return different | |
12970 | answers for target_can_run_breakpoint_commands(). | |
12971 | Given absence of finer grained resetting, we get to do | |
12972 | it all the time. */ | |
12973 | if (b->extra_string != NULL) | |
12974 | update_dprintf_command_list (b); | |
12975 | } | |
12976 | ||
2d9442cc HZ |
12977 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12978 | ||
12979 | static void | |
12980 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12981 | { | |
f00aae0f | 12982 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12983 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12984 | tp->extra_string); |
12985 | print_recreate_thread (tp, fp); | |
12986 | } | |
12987 | ||
9d6e6e84 HZ |
12988 | /* Implement the "after_condition_true" breakpoint_ops method for |
12989 | dprintf. | |
12990 | ||
12991 | dprintf's are implemented with regular commands in their command | |
12992 | list, but we run the commands here instead of before presenting the | |
12993 | stop to the user, as dprintf's don't actually cause a stop. This | |
12994 | also makes it so that the commands of multiple dprintfs at the same | |
12995 | address are all handled. */ | |
12996 | ||
12997 | static void | |
12998 | dprintf_after_condition_true (struct bpstats *bs) | |
12999 | { | |
04afa70c | 13000 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13001 | struct bpstats *tmp_bs_p = &tmp_bs; |
13002 | ||
13003 | /* dprintf's never cause a stop. This wasn't set in the | |
13004 | check_status hook instead because that would make the dprintf's | |
13005 | condition not be evaluated. */ | |
13006 | bs->stop = 0; | |
13007 | ||
13008 | /* Run the command list here. Take ownership of it instead of | |
13009 | copying. We never want these commands to run later in | |
13010 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13011 | be set at same address as this dprintf, or even if running the | |
13012 | commands here throws. */ | |
13013 | tmp_bs.commands = bs->commands; | |
13014 | bs->commands = NULL; | |
9d6e6e84 HZ |
13015 | |
13016 | bpstat_do_actions_1 (&tmp_bs_p); | |
13017 | ||
13018 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13019 | bpstat_do_actions_1 may return early without processing the whole | |
13020 | list. */ | |
9d6e6e84 HZ |
13021 | } |
13022 | ||
983af33b SDJ |
13023 | /* The breakpoint_ops structure to be used on static tracepoints with |
13024 | markers (`-m'). */ | |
13025 | ||
13026 | static void | |
626d2320 | 13027 | strace_marker_create_sals_from_location (struct event_location *location, |
5f700d83 | 13028 | struct linespec_result *canonical, |
f00aae0f | 13029 | enum bptype type_wanted) |
983af33b SDJ |
13030 | { |
13031 | struct linespec_sals lsal; | |
f00aae0f | 13032 | const char *arg_start, *arg; |
983af33b | 13033 | |
a20714ff | 13034 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13035 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13036 | |
f2fc3015 TT |
13037 | std::string str (arg_start, arg - arg_start); |
13038 | const char *ptr = str.c_str (); | |
a20714ff PA |
13039 | canonical->location |
13040 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13041 | |
8e9e35b1 TT |
13042 | lsal.canonical |
13043 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13044 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13045 | } |
13046 | ||
13047 | static void | |
13048 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13049 | struct linespec_result *canonical, | |
e1e01040 PA |
13050 | gdb::unique_xmalloc_ptr<char> cond_string, |
13051 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13052 | enum bptype type_wanted, |
13053 | enum bpdisp disposition, | |
13054 | int thread, | |
13055 | int task, int ignore_count, | |
13056 | const struct breakpoint_ops *ops, | |
13057 | int from_tty, int enabled, | |
44f238bb | 13058 | int internal, unsigned flags) |
983af33b | 13059 | { |
6c5b2ebe | 13060 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13061 | |
13062 | /* If the user is creating a static tracepoint by marker id | |
13063 | (strace -m MARKER_ID), then store the sals index, so that | |
13064 | breakpoint_re_set can try to match up which of the newly | |
13065 | found markers corresponds to this one, and, don't try to | |
13066 | expand multiple locations for each sal, given than SALS | |
13067 | already should contain all sals for MARKER_ID. */ | |
13068 | ||
6c5b2ebe | 13069 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13070 | { |
6c5b2ebe PA |
13071 | event_location_up location |
13072 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13073 | |
b270e6f9 | 13074 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13075 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13076 | std::move (location), NULL, |
e1e01040 PA |
13077 | std::move (cond_string), |
13078 | std::move (extra_string), | |
e7e0cddf | 13079 | type_wanted, disposition, |
983af33b | 13080 | thread, task, ignore_count, ops, |
44f238bb | 13081 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13082 | canonical->special_display); |
13083 | /* Given that its possible to have multiple markers with | |
13084 | the same string id, if the user is creating a static | |
13085 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13086 | store the sals index, so that breakpoint_re_set can | |
13087 | try to match up which of the newly found markers | |
13088 | corresponds to this one */ | |
13089 | tp->static_trace_marker_id_idx = i; | |
13090 | ||
b270e6f9 | 13091 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13092 | } |
13093 | } | |
13094 | ||
6c5b2ebe | 13095 | static std::vector<symtab_and_line> |
f00aae0f | 13096 | strace_marker_decode_location (struct breakpoint *b, |
626d2320 | 13097 | struct event_location *location, |
6c5b2ebe | 13098 | struct program_space *search_pspace) |
983af33b SDJ |
13099 | { |
13100 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13101 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13102 | |
6c5b2ebe PA |
13103 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13104 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13105 | { |
6c5b2ebe PA |
13106 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13107 | sals.resize (1); | |
13108 | return sals; | |
983af33b SDJ |
13109 | } |
13110 | else | |
5d9310c4 | 13111 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13112 | } |
13113 | ||
13114 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13115 | ||
13116 | static int | |
13117 | strace_marker_p (struct breakpoint *b) | |
13118 | { | |
13119 | return b->ops == &strace_marker_breakpoint_ops; | |
13120 | } | |
13121 | ||
53a5351d | 13122 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13123 | structures. */ |
c906108c SS |
13124 | |
13125 | void | |
fba45db2 | 13126 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13127 | { |
8a3fe4f8 | 13128 | gdb_assert (bpt != NULL); |
c906108c | 13129 | |
4a64f543 MS |
13130 | /* Has this bp already been deleted? This can happen because |
13131 | multiple lists can hold pointers to bp's. bpstat lists are | |
13132 | especial culprits. | |
13133 | ||
13134 | One example of this happening is a watchpoint's scope bp. When | |
13135 | the scope bp triggers, we notice that the watchpoint is out of | |
13136 | scope, and delete it. We also delete its scope bp. But the | |
13137 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13138 | That bpstat is then checked for auto-deleting bp's, which are | |
13139 | deleted. | |
13140 | ||
13141 | A real solution to this problem might involve reference counts in | |
13142 | bp's, and/or giving them pointers back to their referencing | |
13143 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13144 | storage when no more references were extent. A cheaper bandaid | |
13145 | was chosen. */ | |
c906108c SS |
13146 | if (bpt->type == bp_none) |
13147 | return; | |
13148 | ||
4a64f543 MS |
13149 | /* At least avoid this stale reference until the reference counting |
13150 | of breakpoints gets resolved. */ | |
d0fb5eae | 13151 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13152 | { |
d0fb5eae | 13153 | struct breakpoint *related; |
3a5c3e22 | 13154 | struct watchpoint *w; |
d0fb5eae JK |
13155 | |
13156 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13157 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13158 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13159 | w = (struct watchpoint *) bpt; |
13160 | else | |
13161 | w = NULL; | |
13162 | if (w != NULL) | |
13163 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13164 | |
13165 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13166 | for (related = bpt; related->related_breakpoint != bpt; | |
13167 | related = related->related_breakpoint); | |
13168 | related->related_breakpoint = bpt->related_breakpoint; | |
13169 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13170 | } |
13171 | ||
a9634178 TJB |
13172 | /* watch_command_1 creates a watchpoint but only sets its number if |
13173 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13174 | a problem in that process, we'll be asked to delete the half-created | |
13175 | watchpoint. In that case, don't announce the deletion. */ | |
13176 | if (bpt->number) | |
76727919 | 13177 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13178 | |
c906108c SS |
13179 | if (breakpoint_chain == bpt) |
13180 | breakpoint_chain = bpt->next; | |
13181 | ||
43892fdf | 13182 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13183 | if (b->next == bpt) |
c5aa993b JM |
13184 | { |
13185 | b->next = bpt->next; | |
13186 | break; | |
13187 | } | |
c906108c | 13188 | |
f431efe5 PA |
13189 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13190 | been freed. */ | |
13191 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13192 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13193 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13194 | commands are associated with the bpstat; if we remove it here, | |
13195 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13196 | event-top.c won't do anything, and temporary breakpoints with | |
13197 | commands won't work. */ | |
13198 | ||
13199 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13200 | ||
4a64f543 MS |
13201 | /* Now that breakpoint is removed from breakpoint list, update the |
13202 | global location list. This will remove locations that used to | |
13203 | belong to this breakpoint. Do this before freeing the breakpoint | |
13204 | itself, since remove_breakpoint looks at location's owner. It | |
13205 | might be better design to have location completely | |
13206 | self-contained, but it's not the case now. */ | |
44702360 | 13207 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13208 | |
4a64f543 MS |
13209 | /* On the chance that someone will soon try again to delete this |
13210 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13211 | bpt->type = bp_none; |
4d01a485 | 13212 | delete bpt; |
c906108c SS |
13213 | } |
13214 | ||
51be5b68 PA |
13215 | /* Iterator function to call a user-provided callback function once |
13216 | for each of B and its related breakpoints. */ | |
13217 | ||
13218 | static void | |
13219 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13220 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13221 | { |
13222 | struct breakpoint *related; | |
13223 | ||
13224 | related = b; | |
13225 | do | |
13226 | { | |
13227 | struct breakpoint *next; | |
13228 | ||
13229 | /* FUNCTION may delete RELATED. */ | |
13230 | next = related->related_breakpoint; | |
13231 | ||
13232 | if (next == related) | |
13233 | { | |
13234 | /* RELATED is the last ring entry. */ | |
48649e1b | 13235 | function (related); |
51be5b68 PA |
13236 | |
13237 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13238 | B. There's nothing left to do anyway, so just break | |
13239 | out. */ | |
13240 | break; | |
13241 | } | |
13242 | else | |
48649e1b | 13243 | function (related); |
51be5b68 PA |
13244 | |
13245 | related = next; | |
13246 | } | |
13247 | while (related != b); | |
13248 | } | |
95a42b64 | 13249 | |
4495129a | 13250 | static void |
981a3fb3 | 13251 | delete_command (const char *arg, int from_tty) |
c906108c | 13252 | { |
ea9365bb TT |
13253 | dont_repeat (); |
13254 | ||
c906108c SS |
13255 | if (arg == 0) |
13256 | { | |
13257 | int breaks_to_delete = 0; | |
13258 | ||
46c6471b | 13259 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
13260 | internal breakpoints, these have to be deleted with an |
13261 | explicit breakpoint number argument. */ | |
43892fdf | 13262 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 13263 | if (user_breakpoint_p (b)) |
973d738b DJ |
13264 | { |
13265 | breaks_to_delete = 1; | |
13266 | break; | |
13267 | } | |
c906108c SS |
13268 | |
13269 | /* Ask user only if there are some breakpoints to delete. */ | |
13270 | if (!from_tty | |
e2e0b3e5 | 13271 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
13272 | for (breakpoint *b : all_breakpoints_safe ()) |
13273 | if (user_breakpoint_p (b)) | |
13274 | delete_breakpoint (b); | |
c906108c SS |
13275 | } |
13276 | else | |
48649e1b | 13277 | map_breakpoint_numbers |
b926417a | 13278 | (arg, [&] (breakpoint *br) |
48649e1b | 13279 | { |
b926417a | 13280 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13281 | }); |
c906108c SS |
13282 | } |
13283 | ||
c2f4122d PA |
13284 | /* Return true if all locations of B bound to PSPACE are pending. If |
13285 | PSPACE is NULL, all locations of all program spaces are | |
13286 | considered. */ | |
13287 | ||
0d381245 | 13288 | static int |
c2f4122d | 13289 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13290 | { |
40cb8ca5 | 13291 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
13292 | if ((pspace == NULL |
13293 | || loc->pspace == pspace) | |
13294 | && !loc->shlib_disabled | |
8645ff69 | 13295 | && !loc->pspace->executing_startup) |
0d381245 VP |
13296 | return 0; |
13297 | return 1; | |
fe3f5fa8 VP |
13298 | } |
13299 | ||
776592bf DE |
13300 | /* Subroutine of update_breakpoint_locations to simplify it. |
13301 | Return non-zero if multiple fns in list LOC have the same name. | |
13302 | Null names are ignored. */ | |
13303 | ||
13304 | static int | |
13305 | ambiguous_names_p (struct bp_location *loc) | |
13306 | { | |
13307 | struct bp_location *l; | |
2698f5ea | 13308 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 13309 | xcalloc, xfree)); |
776592bf DE |
13310 | |
13311 | for (l = loc; l != NULL; l = l->next) | |
13312 | { | |
13313 | const char **slot; | |
13314 | const char *name = l->function_name; | |
13315 | ||
13316 | /* Allow for some names to be NULL, ignore them. */ | |
13317 | if (name == NULL) | |
13318 | continue; | |
13319 | ||
c1fb9836 | 13320 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 13321 | INSERT); |
4a64f543 MS |
13322 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13323 | returns NULL. */ | |
776592bf | 13324 | if (*slot != NULL) |
c1fb9836 | 13325 | return 1; |
776592bf DE |
13326 | *slot = name; |
13327 | } | |
13328 | ||
776592bf DE |
13329 | return 0; |
13330 | } | |
13331 | ||
0fb4aa4b PA |
13332 | /* When symbols change, it probably means the sources changed as well, |
13333 | and it might mean the static tracepoint markers are no longer at | |
13334 | the same address or line numbers they used to be at last we | |
13335 | checked. Losing your static tracepoints whenever you rebuild is | |
13336 | undesirable. This function tries to resync/rematch gdb static | |
13337 | tracepoints with the markers on the target, for static tracepoints | |
13338 | that have not been set by marker id. Static tracepoint that have | |
13339 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13340 | The heuristic is: | |
13341 | ||
13342 | 1) For a tracepoint set at a specific address, look for a marker at | |
13343 | the old PC. If one is found there, assume to be the same marker. | |
13344 | If the name / string id of the marker found is different from the | |
13345 | previous known name, assume that means the user renamed the marker | |
13346 | in the sources, and output a warning. | |
13347 | ||
13348 | 2) For a tracepoint set at a given line number, look for a marker | |
13349 | at the new address of the old line number. If one is found there, | |
13350 | assume to be the same marker. If the name / string id of the | |
13351 | marker found is different from the previous known name, assume that | |
13352 | means the user renamed the marker in the sources, and output a | |
13353 | warning. | |
13354 | ||
13355 | 3) If a marker is no longer found at the same address or line, it | |
13356 | may mean the marker no longer exists. But it may also just mean | |
13357 | the code changed a bit. Maybe the user added a few lines of code | |
13358 | that made the marker move up or down (in line number terms). Ask | |
13359 | the target for info about the marker with the string id as we knew | |
13360 | it. If found, update line number and address in the matching | |
13361 | static tracepoint. This will get confused if there's more than one | |
13362 | marker with the same ID (possible in UST, although unadvised | |
13363 | precisely because it confuses tools). */ | |
13364 | ||
13365 | static struct symtab_and_line | |
13366 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13367 | { | |
d9b3f62e | 13368 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13369 | struct static_tracepoint_marker marker; |
13370 | CORE_ADDR pc; | |
0fb4aa4b PA |
13371 | |
13372 | pc = sal.pc; | |
13373 | if (sal.line) | |
13374 | find_line_pc (sal.symtab, sal.line, &pc); | |
13375 | ||
13376 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13377 | { | |
5d9310c4 | 13378 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13379 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13380 | b->number, tp->static_trace_marker_id.c_str (), |
13381 | marker.str_id.c_str ()); | |
0fb4aa4b | 13382 | |
5d9310c4 | 13383 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13384 | |
13385 | return sal; | |
13386 | } | |
13387 | ||
13388 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13389 | by string ID. */ | |
13390 | if (!sal.explicit_pc | |
13391 | && sal.line != 0 | |
13392 | && sal.symtab != NULL | |
5d9310c4 | 13393 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13394 | { |
5d9310c4 SM |
13395 | std::vector<static_tracepoint_marker> markers |
13396 | = target_static_tracepoint_markers_by_strid | |
13397 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13398 | |
5d9310c4 | 13399 | if (!markers.empty ()) |
0fb4aa4b | 13400 | { |
0fb4aa4b | 13401 | struct symbol *sym; |
80e1d417 | 13402 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13403 | struct ui_out *uiout = current_uiout; |
67994074 | 13404 | struct explicit_location explicit_loc; |
0fb4aa4b | 13405 | |
5d9310c4 | 13406 | tpmarker = &markers[0]; |
0fb4aa4b | 13407 | |
5d9310c4 | 13408 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13409 | |
13410 | warning (_("marker for static tracepoint %d (%s) not " | |
13411 | "found at previous line number"), | |
5d9310c4 | 13412 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13413 | |
51abb421 | 13414 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13415 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13416 | uiout->text ("Now in "); |
0fb4aa4b PA |
13417 | if (sym) |
13418 | { | |
987012b8 | 13419 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13420 | function_name_style.style ()); |
112e8700 | 13421 | uiout->text (" at "); |
0fb4aa4b | 13422 | } |
112e8700 | 13423 | uiout->field_string ("file", |
cbe56571 | 13424 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13425 | file_name_style.style ()); |
112e8700 | 13426 | uiout->text (":"); |
0fb4aa4b | 13427 | |
112e8700 | 13428 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13429 | { |
0b0865da | 13430 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13431 | |
112e8700 | 13432 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13433 | } |
13434 | ||
381befee | 13435 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13436 | uiout->text ("\n"); |
0fb4aa4b | 13437 | |
80e1d417 | 13438 | b->loc->line_number = sal2.line; |
2f202fde | 13439 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13440 | |
d28cd78a | 13441 | b->location.reset (NULL); |
67994074 KS |
13442 | initialize_explicit_location (&explicit_loc); |
13443 | explicit_loc.source_filename | |
00e52e53 | 13444 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13445 | explicit_loc.line_offset.offset = b->loc->line_number; |
13446 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13447 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13448 | |
13449 | /* Might be nice to check if function changed, and warn if | |
13450 | so. */ | |
0fb4aa4b PA |
13451 | } |
13452 | } | |
13453 | return sal; | |
13454 | } | |
13455 | ||
8d3788bd VP |
13456 | /* Returns 1 iff locations A and B are sufficiently same that |
13457 | we don't need to report breakpoint as changed. */ | |
13458 | ||
13459 | static int | |
13460 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13461 | { | |
13462 | while (a && b) | |
13463 | { | |
13464 | if (a->address != b->address) | |
13465 | return 0; | |
13466 | ||
13467 | if (a->shlib_disabled != b->shlib_disabled) | |
13468 | return 0; | |
13469 | ||
13470 | if (a->enabled != b->enabled) | |
13471 | return 0; | |
13472 | ||
b5fa468f TBA |
13473 | if (a->disabled_by_cond != b->disabled_by_cond) |
13474 | return 0; | |
13475 | ||
8d3788bd VP |
13476 | a = a->next; |
13477 | b = b->next; | |
13478 | } | |
13479 | ||
13480 | if ((a == NULL) != (b == NULL)) | |
13481 | return 0; | |
13482 | ||
13483 | return 1; | |
13484 | } | |
13485 | ||
c2f4122d PA |
13486 | /* Split all locations of B that are bound to PSPACE out of B's |
13487 | location list to a separate list and return that list's head. If | |
13488 | PSPACE is NULL, hoist out all locations of B. */ | |
13489 | ||
13490 | static struct bp_location * | |
13491 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13492 | { | |
13493 | struct bp_location head; | |
13494 | struct bp_location *i = b->loc; | |
13495 | struct bp_location **i_link = &b->loc; | |
13496 | struct bp_location *hoisted = &head; | |
13497 | ||
13498 | if (pspace == NULL) | |
13499 | { | |
13500 | i = b->loc; | |
13501 | b->loc = NULL; | |
13502 | return i; | |
13503 | } | |
13504 | ||
13505 | head.next = NULL; | |
13506 | ||
13507 | while (i != NULL) | |
13508 | { | |
13509 | if (i->pspace == pspace) | |
13510 | { | |
13511 | *i_link = i->next; | |
13512 | i->next = NULL; | |
13513 | hoisted->next = i; | |
13514 | hoisted = i; | |
13515 | } | |
13516 | else | |
13517 | i_link = &i->next; | |
13518 | i = *i_link; | |
13519 | } | |
13520 | ||
13521 | return head.next; | |
13522 | } | |
13523 | ||
13524 | /* Create new breakpoint locations for B (a hardware or software | |
13525 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13526 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13527 | FILTER_PSPACE. Locations of other program spaces are left | |
13528 | untouched. */ | |
f1310107 | 13529 | |
0e30163f | 13530 | void |
0d381245 | 13531 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13532 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13533 | gdb::array_view<const symtab_and_line> sals, |
13534 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13535 | { |
c2f4122d | 13536 | struct bp_location *existing_locations; |
0d381245 | 13537 | |
6c5b2ebe | 13538 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13539 | { |
13540 | /* Ranged breakpoints have only one start location and one end | |
13541 | location. */ | |
13542 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13543 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13544 | "multiple locations found\n"), | |
13545 | b->number); | |
13546 | return; | |
13547 | } | |
f1310107 | 13548 | |
4a64f543 MS |
13549 | /* If there's no new locations, and all existing locations are |
13550 | pending, don't do anything. This optimizes the common case where | |
13551 | all locations are in the same shared library, that was unloaded. | |
13552 | We'd like to retain the location, so that when the library is | |
13553 | loaded again, we don't loose the enabled/disabled status of the | |
13554 | individual locations. */ | |
6c5b2ebe | 13555 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13556 | return; |
13557 | ||
c2f4122d | 13558 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13559 | |
6c5b2ebe | 13560 | for (const auto &sal : sals) |
fe3f5fa8 | 13561 | { |
f8eba3c6 TT |
13562 | struct bp_location *new_loc; |
13563 | ||
6c5b2ebe | 13564 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13565 | |
6c5b2ebe | 13566 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13567 | |
0d381245 VP |
13568 | /* Reparse conditions, they might contain references to the |
13569 | old symtab. */ | |
13570 | if (b->cond_string != NULL) | |
13571 | { | |
bbc13ae3 | 13572 | const char *s; |
fe3f5fa8 | 13573 | |
0d381245 | 13574 | s = b->cond_string; |
a70b8144 | 13575 | try |
0d381245 | 13576 | { |
6c5b2ebe PA |
13577 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13578 | block_for_pc (sal.pc), | |
0d381245 VP |
13579 | 0); |
13580 | } | |
230d2906 | 13581 | catch (const gdb_exception_error &e) |
0d381245 | 13582 | { |
b5fa468f | 13583 | new_loc->disabled_by_cond = true; |
0d381245 VP |
13584 | } |
13585 | } | |
fe3f5fa8 | 13586 | |
6c5b2ebe | 13587 | if (!sals_end.empty ()) |
f1310107 | 13588 | { |
6c5b2ebe | 13589 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13590 | |
6c5b2ebe | 13591 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13592 | } |
0d381245 | 13593 | } |
fe3f5fa8 | 13594 | |
4a64f543 MS |
13595 | /* If possible, carry over 'disable' status from existing |
13596 | breakpoints. */ | |
0d381245 VP |
13597 | { |
13598 | struct bp_location *e = existing_locations; | |
776592bf DE |
13599 | /* If there are multiple breakpoints with the same function name, |
13600 | e.g. for inline functions, comparing function names won't work. | |
13601 | Instead compare pc addresses; this is just a heuristic as things | |
13602 | may have moved, but in practice it gives the correct answer | |
13603 | often enough until a better solution is found. */ | |
13604 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13605 | ||
0d381245 VP |
13606 | for (; e; e = e->next) |
13607 | { | |
b5fa468f | 13608 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 13609 | { |
776592bf DE |
13610 | if (have_ambiguous_names) |
13611 | { | |
40cb8ca5 | 13612 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
13613 | { |
13614 | /* Ignore software vs hardware location type at | |
13615 | this point, because with "set breakpoint | |
13616 | auto-hw", after a re-set, locations that were | |
13617 | hardware can end up as software, or vice versa. | |
13618 | As mentioned above, this is an heuristic and in | |
13619 | practice should give the correct answer often | |
13620 | enough. */ | |
13621 | if (breakpoint_locations_match (e, l, true)) | |
13622 | { | |
b5fa468f TBA |
13623 | l->enabled = e->enabled; |
13624 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
13625 | break; |
13626 | } | |
13627 | } | |
776592bf DE |
13628 | } |
13629 | else | |
13630 | { | |
40cb8ca5 | 13631 | for (bp_location *l : b->locations ()) |
776592bf DE |
13632 | if (l->function_name |
13633 | && strcmp (e->function_name, l->function_name) == 0) | |
13634 | { | |
b5fa468f TBA |
13635 | l->enabled = e->enabled; |
13636 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
13637 | break; |
13638 | } | |
13639 | } | |
0d381245 VP |
13640 | } |
13641 | } | |
13642 | } | |
fe3f5fa8 | 13643 | |
8d3788bd | 13644 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13645 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13646 | } |
13647 | ||
f00aae0f | 13648 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13649 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13650 | ||
6c5b2ebe | 13651 | static std::vector<symtab_and_line> |
f00aae0f | 13652 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13653 | struct program_space *search_pspace, int *found) |
ef23e705 | 13654 | { |
cc06b668 | 13655 | struct gdb_exception exception; |
ef23e705 | 13656 | |
983af33b | 13657 | gdb_assert (b->ops != NULL); |
ef23e705 | 13658 | |
6c5b2ebe PA |
13659 | std::vector<symtab_and_line> sals; |
13660 | ||
a70b8144 | 13661 | try |
ef23e705 | 13662 | { |
6c5b2ebe | 13663 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13664 | } |
94aeb44b | 13665 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13666 | { |
13667 | int not_found_and_ok = 0; | |
492d29ea | 13668 | |
ef23e705 TJB |
13669 | /* For pending breakpoints, it's expected that parsing will |
13670 | fail until the right shared library is loaded. User has | |
13671 | already told to create pending breakpoints and don't need | |
13672 | extra messages. If breakpoint is in bp_shlib_disabled | |
13673 | state, then user already saw the message about that | |
13674 | breakpoint being disabled, and don't want to see more | |
13675 | errors. */ | |
58438ac1 | 13676 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13677 | && (b->condition_not_parsed |
13678 | || (b->loc != NULL | |
13679 | && search_pspace != NULL | |
13680 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13681 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13682 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13683 | || b->enable_state == bp_disabled)) |
13684 | not_found_and_ok = 1; | |
13685 | ||
13686 | if (!not_found_and_ok) | |
13687 | { | |
13688 | /* We surely don't want to warn about the same breakpoint | |
13689 | 10 times. One solution, implemented here, is disable | |
13690 | the breakpoint on error. Another solution would be to | |
13691 | have separate 'warning emitted' flag. Since this | |
13692 | happens only when a binary has changed, I don't know | |
13693 | which approach is better. */ | |
13694 | b->enable_state = bp_disabled; | |
eedc3f4f | 13695 | throw; |
ef23e705 | 13696 | } |
94aeb44b TT |
13697 | |
13698 | exception = std::move (e); | |
ef23e705 TJB |
13699 | } |
13700 | ||
492d29ea | 13701 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13702 | { |
6c5b2ebe PA |
13703 | for (auto &sal : sals) |
13704 | resolve_sal_pc (&sal); | |
f00aae0f | 13705 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13706 | { |
ed1d1739 KS |
13707 | char *cond_string, *extra_string; |
13708 | int thread, task; | |
ef23e705 | 13709 | |
b5fa468f TBA |
13710 | find_condition_and_thread_for_sals (sals, b->extra_string, |
13711 | &cond_string, &thread, | |
13712 | &task, &extra_string); | |
f00aae0f | 13713 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13714 | if (cond_string) |
13715 | b->cond_string = cond_string; | |
13716 | b->thread = thread; | |
13717 | b->task = task; | |
e7e0cddf | 13718 | if (extra_string) |
f00aae0f KS |
13719 | { |
13720 | xfree (b->extra_string); | |
13721 | b->extra_string = extra_string; | |
13722 | } | |
ef23e705 TJB |
13723 | b->condition_not_parsed = 0; |
13724 | } | |
13725 | ||
983af33b | 13726 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13727 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13728 | |
58438ac1 TT |
13729 | *found = 1; |
13730 | } | |
13731 | else | |
13732 | *found = 0; | |
ef23e705 TJB |
13733 | |
13734 | return sals; | |
13735 | } | |
13736 | ||
348d480f PA |
13737 | /* The default re_set method, for typical hardware or software |
13738 | breakpoints. Reevaluate the breakpoint and recreate its | |
13739 | locations. */ | |
13740 | ||
13741 | static void | |
28010a5d | 13742 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13743 | { |
c2f4122d | 13744 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13745 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13746 | |
6c5b2ebe PA |
13747 | int found; |
13748 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13749 | filter_pspace, &found); | |
ef23e705 | 13750 | if (found) |
6c5b2ebe | 13751 | expanded = std::move (sals); |
ef23e705 | 13752 | |
f00aae0f | 13753 | if (b->location_range_end != NULL) |
f1310107 | 13754 | { |
6c5b2ebe PA |
13755 | std::vector<symtab_and_line> sals_end |
13756 | = location_to_sals (b, b->location_range_end.get (), | |
13757 | filter_pspace, &found); | |
f1310107 | 13758 | if (found) |
6c5b2ebe | 13759 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13760 | } |
13761 | ||
c2f4122d | 13762 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13763 | } |
13764 | ||
983af33b SDJ |
13765 | /* Default method for creating SALs from an address string. It basically |
13766 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13767 | ||
13768 | static void | |
626d2320 | 13769 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
13770 | struct linespec_result *canonical, |
13771 | enum bptype type_wanted) | |
983af33b | 13772 | { |
f00aae0f | 13773 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13774 | } |
13775 | ||
13776 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13777 | function for the `create_breakpoints_sal' method of | |
13778 | breakpoint_ops. */ | |
13779 | ||
13780 | static void | |
13781 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13782 | struct linespec_result *canonical, | |
e1e01040 PA |
13783 | gdb::unique_xmalloc_ptr<char> cond_string, |
13784 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13785 | enum bptype type_wanted, |
13786 | enum bpdisp disposition, | |
13787 | int thread, | |
13788 | int task, int ignore_count, | |
13789 | const struct breakpoint_ops *ops, | |
13790 | int from_tty, int enabled, | |
44f238bb | 13791 | int internal, unsigned flags) |
983af33b | 13792 | { |
e1e01040 PA |
13793 | create_breakpoints_sal (gdbarch, canonical, |
13794 | std::move (cond_string), | |
13795 | std::move (extra_string), | |
983af33b SDJ |
13796 | type_wanted, disposition, |
13797 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13798 | enabled, internal, flags); |
983af33b SDJ |
13799 | } |
13800 | ||
13801 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13802 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13803 | |
6c5b2ebe | 13804 | static std::vector<symtab_and_line> |
f00aae0f | 13805 | decode_location_default (struct breakpoint *b, |
626d2320 | 13806 | struct event_location *location, |
6c5b2ebe | 13807 | struct program_space *search_pspace) |
983af33b SDJ |
13808 | { |
13809 | struct linespec_result canonical; | |
13810 | ||
c2f4122d | 13811 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13812 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13813 | b->filter.get ()); |
983af33b SDJ |
13814 | |
13815 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13816 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13817 | |
6c5b2ebe | 13818 | if (!canonical.lsals.empty ()) |
983af33b | 13819 | { |
6c5b2ebe PA |
13820 | const linespec_sals &lsal = canonical.lsals[0]; |
13821 | return std::move (lsal.sals); | |
983af33b | 13822 | } |
6c5b2ebe | 13823 | return {}; |
983af33b SDJ |
13824 | } |
13825 | ||
bf469271 | 13826 | /* Reset a breakpoint. */ |
c906108c | 13827 | |
bf469271 PA |
13828 | static void |
13829 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13830 | { |
fdf44873 TT |
13831 | input_radix = b->input_radix; |
13832 | set_language (b->language); | |
c906108c | 13833 | |
348d480f | 13834 | b->ops->re_set (b); |
c906108c SS |
13835 | } |
13836 | ||
c2f4122d PA |
13837 | /* Re-set breakpoint locations for the current program space. |
13838 | Locations bound to other program spaces are left untouched. */ | |
13839 | ||
c906108c | 13840 | void |
69de3c6a | 13841 | breakpoint_re_set (void) |
c906108c | 13842 | { |
c5aa993b | 13843 | { |
fdf44873 TT |
13844 | scoped_restore_current_language save_language; |
13845 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13846 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13847 | |
8e817061 JB |
13848 | /* breakpoint_re_set_one sets the current_language to the language |
13849 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13850 | before re-evaluating the breakpoint's location. This change can | |
13851 | unfortunately get undone by accident if the language_mode is set | |
13852 | to auto, and we either switch frames, or more likely in this context, | |
13853 | we select the current frame. | |
13854 | ||
13855 | We prevent this by temporarily turning the language_mode to | |
13856 | language_mode_manual. We restore it once all breakpoints | |
13857 | have been reset. */ | |
13858 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13859 | language_mode = language_mode_manual; | |
13860 | ||
5ed8105e PA |
13861 | /* Note: we must not try to insert locations until after all |
13862 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13863 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13864 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13865 | |
1428b37a | 13866 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 13867 | { |
a70b8144 | 13868 | try |
bf469271 PA |
13869 | { |
13870 | breakpoint_re_set_one (b); | |
13871 | } | |
230d2906 | 13872 | catch (const gdb_exception &ex) |
bf469271 PA |
13873 | { |
13874 | exception_fprintf (gdb_stderr, ex, | |
13875 | "Error in re-setting breakpoint %d: ", | |
13876 | b->number); | |
13877 | } | |
5ed8105e | 13878 | } |
5ed8105e PA |
13879 | |
13880 | jit_breakpoint_re_set (); | |
13881 | } | |
6c95b8df | 13882 | |
af02033e PP |
13883 | create_overlay_event_breakpoint (); |
13884 | create_longjmp_master_breakpoint (); | |
13885 | create_std_terminate_master_breakpoint (); | |
186c406b | 13886 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13887 | |
13888 | /* Now we can insert. */ | |
13889 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13890 | } |
13891 | \f | |
c906108c SS |
13892 | /* Reset the thread number of this breakpoint: |
13893 | ||
13894 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13895 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13896 | void |
fba45db2 | 13897 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13898 | { |
13899 | if (b->thread != -1) | |
13900 | { | |
00431a78 | 13901 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13902 | |
13903 | /* We're being called after following a fork. The new fork is | |
13904 | selected as current, and unless this was a vfork will have a | |
13905 | different program space from the original thread. Reset that | |
13906 | as well. */ | |
13907 | b->loc->pspace = current_program_space; | |
c906108c SS |
13908 | } |
13909 | } | |
13910 | ||
03ac34d5 MS |
13911 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13912 | If from_tty is nonzero, it prints a message to that effect, | |
13913 | which ends with a period (no newline). */ | |
13914 | ||
c906108c | 13915 | void |
fba45db2 | 13916 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13917 | { |
c906108c SS |
13918 | if (count < 0) |
13919 | count = 0; | |
13920 | ||
43892fdf | 13921 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13922 | if (b->number == bptnum) |
c5aa993b | 13923 | { |
d77f58be SS |
13924 | if (is_tracepoint (b)) |
13925 | { | |
13926 | if (from_tty && count != 0) | |
13927 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13928 | bptnum); | |
13929 | return; | |
13930 | } | |
13931 | ||
c5aa993b | 13932 | b->ignore_count = count; |
221ea385 KS |
13933 | if (from_tty) |
13934 | { | |
13935 | if (count == 0) | |
3e43a32a MS |
13936 | printf_filtered (_("Will stop next time " |
13937 | "breakpoint %d is reached."), | |
221ea385 KS |
13938 | bptnum); |
13939 | else if (count == 1) | |
a3f17187 | 13940 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13941 | bptnum); |
13942 | else | |
3e43a32a MS |
13943 | printf_filtered (_("Will ignore next %d " |
13944 | "crossings of breakpoint %d."), | |
221ea385 KS |
13945 | count, bptnum); |
13946 | } | |
76727919 | 13947 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13948 | return; |
13949 | } | |
c906108c | 13950 | |
8a3fe4f8 | 13951 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13952 | } |
13953 | ||
c906108c SS |
13954 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13955 | ||
13956 | static void | |
0b39b52e | 13957 | ignore_command (const char *args, int from_tty) |
c906108c | 13958 | { |
0b39b52e | 13959 | const char *p = args; |
52f0bd74 | 13960 | int num; |
c906108c SS |
13961 | |
13962 | if (p == 0) | |
e2e0b3e5 | 13963 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13964 | |
c906108c | 13965 | num = get_number (&p); |
5c44784c | 13966 | if (num == 0) |
8a3fe4f8 | 13967 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13968 | if (*p == 0) |
8a3fe4f8 | 13969 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13970 | |
13971 | set_ignore_count (num, | |
13972 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13973 | from_tty); | |
221ea385 KS |
13974 | if (from_tty) |
13975 | printf_filtered ("\n"); | |
c906108c SS |
13976 | } |
13977 | \f | |
d0fe4701 XR |
13978 | |
13979 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13980 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13981 | |
13982 | static void | |
d0fe4701 XR |
13983 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13984 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13985 | { |
d0fe4701 XR |
13986 | if (bp_num_range.first == 0) |
13987 | { | |
13988 | warning (_("bad breakpoint number at or near '%d'"), | |
13989 | bp_num_range.first); | |
13990 | } | |
13991 | else | |
c906108c | 13992 | { |
d0fe4701 | 13993 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13994 | { |
d0fe4701 XR |
13995 | bool match = false; |
13996 | ||
1428b37a | 13997 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 13998 | if (b->number == i) |
5c44784c | 13999 | { |
bfd28288 | 14000 | match = true; |
48649e1b | 14001 | function (b); |
11cf8741 | 14002 | break; |
5c44784c | 14003 | } |
bfd28288 | 14004 | if (!match) |
d0fe4701 | 14005 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14006 | } |
c906108c SS |
14007 | } |
14008 | } | |
14009 | ||
d0fe4701 XR |
14010 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14011 | ARGS. */ | |
14012 | ||
14013 | static void | |
14014 | map_breakpoint_numbers (const char *args, | |
14015 | gdb::function_view<void (breakpoint *)> function) | |
14016 | { | |
14017 | if (args == NULL || *args == '\0') | |
14018 | error_no_arg (_("one or more breakpoint numbers")); | |
14019 | ||
14020 | number_or_range_parser parser (args); | |
14021 | ||
14022 | while (!parser.finished ()) | |
14023 | { | |
14024 | int num = parser.get_number (); | |
14025 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14026 | } | |
14027 | } | |
14028 | ||
14029 | /* Return the breakpoint location structure corresponding to the | |
14030 | BP_NUM and LOC_NUM values. */ | |
14031 | ||
0d381245 | 14032 | static struct bp_location * |
d0fe4701 | 14033 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14034 | { |
43892fdf | 14035 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
14036 | |
14037 | if (!b || b->number != bp_num) | |
d0fe4701 | 14038 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14039 | |
0d381245 | 14040 | if (loc_num == 0) |
d0fe4701 | 14041 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14042 | |
d0fe4701 | 14043 | int n = 0; |
40cb8ca5 | 14044 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
14045 | if (++n == loc_num) |
14046 | return loc; | |
14047 | ||
14048 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14049 | } |
14050 | ||
95e95a6d PA |
14051 | /* Modes of operation for extract_bp_num. */ |
14052 | enum class extract_bp_kind | |
14053 | { | |
14054 | /* Extracting a breakpoint number. */ | |
14055 | bp, | |
14056 | ||
14057 | /* Extracting a location number. */ | |
14058 | loc, | |
14059 | }; | |
14060 | ||
14061 | /* Extract a breakpoint or location number (as determined by KIND) | |
14062 | from the string starting at START. TRAILER is a character which | |
14063 | can be found after the number. If you don't want a trailer, use | |
14064 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14065 | string. This always returns a positive integer. */ | |
14066 | ||
14067 | static int | |
14068 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14069 | int trailer, const char **end_out = NULL) | |
14070 | { | |
14071 | const char *end = start; | |
14072 | int num = get_number_trailer (&end, trailer); | |
14073 | if (num < 0) | |
14074 | error (kind == extract_bp_kind::bp | |
14075 | ? _("Negative breakpoint number '%.*s'") | |
14076 | : _("Negative breakpoint location number '%.*s'"), | |
14077 | int (end - start), start); | |
14078 | if (num == 0) | |
14079 | error (kind == extract_bp_kind::bp | |
14080 | ? _("Bad breakpoint number '%.*s'") | |
14081 | : _("Bad breakpoint location number '%.*s'"), | |
14082 | int (end - start), start); | |
14083 | ||
14084 | if (end_out != NULL) | |
14085 | *end_out = end; | |
14086 | return num; | |
14087 | } | |
14088 | ||
14089 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14090 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14091 | representing the (inclusive) range. The returned pair's elements | |
14092 | are always positive integers. */ | |
14093 | ||
14094 | static std::pair<int, int> | |
14095 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14096 | const std::string &arg, | |
14097 | std::string::size_type arg_offset) | |
14098 | { | |
14099 | std::pair<int, int> range; | |
14100 | const char *bp_loc = &arg[arg_offset]; | |
14101 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14102 | if (dash != std::string::npos) | |
14103 | { | |
14104 | /* bp_loc is a range (x-z). */ | |
14105 | if (arg.length () == dash + 1) | |
14106 | error (kind == extract_bp_kind::bp | |
14107 | ? _("Bad breakpoint number at or near: '%s'") | |
14108 | : _("Bad breakpoint location number at or near: '%s'"), | |
14109 | bp_loc); | |
14110 | ||
14111 | const char *end; | |
14112 | const char *start_first = bp_loc; | |
14113 | const char *start_second = &arg[dash + 1]; | |
14114 | range.first = extract_bp_num (kind, start_first, '-'); | |
14115 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14116 | ||
14117 | if (range.first > range.second) | |
14118 | error (kind == extract_bp_kind::bp | |
14119 | ? _("Inverted breakpoint range at '%.*s'") | |
14120 | : _("Inverted breakpoint location range at '%.*s'"), | |
14121 | int (end - start_first), start_first); | |
14122 | } | |
14123 | else | |
14124 | { | |
14125 | /* bp_loc is a single value. */ | |
14126 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14127 | range.second = range.first; | |
14128 | } | |
14129 | return range; | |
14130 | } | |
14131 | ||
d0fe4701 XR |
14132 | /* Extract the breakpoint/location range specified by ARG. Returns |
14133 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14134 | BP_LOC_RANGE. | |
14135 | ||
14136 | ARG may be in any of the following forms: | |
14137 | ||
14138 | x where 'x' is a breakpoint number. | |
14139 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14140 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14141 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14142 | location number range. | |
14143 | */ | |
14144 | ||
cc638e86 | 14145 | static void |
d0fe4701 XR |
14146 | extract_bp_number_and_location (const std::string &arg, |
14147 | std::pair<int, int> &bp_num_range, | |
14148 | std::pair<int, int> &bp_loc_range) | |
14149 | { | |
14150 | std::string::size_type dot = arg.find ('.'); | |
14151 | ||
14152 | if (dot != std::string::npos) | |
14153 | { | |
14154 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14155 | ||
14156 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14157 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14158 | |
95e95a6d PA |
14159 | bp_num_range.first |
14160 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14161 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14162 | |
95e95a6d PA |
14163 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14164 | arg, dot + 1); | |
d0fe4701 XR |
14165 | } |
14166 | else | |
14167 | { | |
14168 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14169 | |
95e95a6d | 14170 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14171 | bp_loc_range.first = 0; |
14172 | bp_loc_range.second = 0; | |
14173 | } | |
d0fe4701 XR |
14174 | } |
14175 | ||
14176 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14177 | specifies whether to enable or disable. */ | |
14178 | ||
14179 | static void | |
14180 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14181 | { | |
14182 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14183 | if (loc != NULL) | |
14184 | { | |
b5fa468f TBA |
14185 | if (loc->disabled_by_cond && enable) |
14186 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
14187 | "cannot enable."), bp_num, loc_num); | |
14188 | ||
d0fe4701 XR |
14189 | if (loc->enabled != enable) |
14190 | { | |
14191 | loc->enabled = enable; | |
14192 | mark_breakpoint_location_modified (loc); | |
14193 | } | |
14194 | if (target_supports_enable_disable_tracepoint () | |
14195 | && current_trace_status ()->running && loc->owner | |
14196 | && is_tracepoint (loc->owner)) | |
14197 | target_disable_tracepoint (loc); | |
14198 | } | |
14199 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14200 | |
14201 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14202 | } |
14203 | ||
14204 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14205 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14206 | (inclusive) range of location numbers of that breakpoint to | |
14207 | enable/disable. ENABLE specifies whether to enable or disable the | |
14208 | location. */ | |
14209 | ||
14210 | static void | |
14211 | enable_disable_breakpoint_location_range (int bp_num, | |
14212 | std::pair<int, int> &bp_loc_range, | |
14213 | bool enable) | |
14214 | { | |
14215 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14216 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14217 | } | |
0d381245 | 14218 | |
1900040c MS |
14219 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14220 | If from_tty is nonzero, it prints a message to that effect, | |
14221 | which ends with a period (no newline). */ | |
14222 | ||
c906108c | 14223 | void |
fba45db2 | 14224 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14225 | { |
14226 | /* Never disable a watchpoint scope breakpoint; we want to | |
14227 | hit them when we leave scope so we can delete both the | |
14228 | watchpoint and its scope breakpoint at that time. */ | |
14229 | if (bpt->type == bp_watchpoint_scope) | |
14230 | return; | |
14231 | ||
b5de0fa7 | 14232 | bpt->enable_state = bp_disabled; |
c906108c | 14233 | |
b775012e LM |
14234 | /* Mark breakpoint locations modified. */ |
14235 | mark_breakpoint_modified (bpt); | |
14236 | ||
d248b706 KY |
14237 | if (target_supports_enable_disable_tracepoint () |
14238 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14239 | { | |
40cb8ca5 | 14240 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
14241 | target_disable_tracepoint (location); |
14242 | } | |
14243 | ||
44702360 | 14244 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14245 | |
76727919 | 14246 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14247 | } |
14248 | ||
d0fe4701 XR |
14249 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14250 | specified in ARGS. ARGS may be in any of the formats handled by | |
14251 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14252 | or disable the breakpoints/locations. */ | |
14253 | ||
c906108c | 14254 | static void |
d0fe4701 | 14255 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14256 | { |
c906108c | 14257 | if (args == 0) |
46c6471b | 14258 | { |
43892fdf | 14259 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 14260 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
14261 | { |
14262 | if (enable) | |
14263 | enable_breakpoint (bpt); | |
14264 | else | |
14265 | disable_breakpoint (bpt); | |
14266 | } | |
46c6471b | 14267 | } |
9eaabc75 | 14268 | else |
0d381245 | 14269 | { |
cb791d59 | 14270 | std::string num = extract_arg (&args); |
9eaabc75 | 14271 | |
cb791d59 | 14272 | while (!num.empty ()) |
d248b706 | 14273 | { |
d0fe4701 | 14274 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14275 | |
cc638e86 PA |
14276 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14277 | ||
14278 | if (bp_loc_range.first == bp_loc_range.second | |
14279 | && bp_loc_range.first == 0) | |
d0fe4701 | 14280 | { |
cc638e86 PA |
14281 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14282 | map_breakpoint_number_range (bp_num_range, | |
14283 | enable | |
14284 | ? enable_breakpoint | |
14285 | : disable_breakpoint); | |
14286 | } | |
14287 | else | |
14288 | { | |
14289 | /* Handle breakpoint ids with formats 'x.y' or | |
14290 | 'x.y-z'. */ | |
14291 | enable_disable_breakpoint_location_range | |
14292 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14293 | } |
9eaabc75 | 14294 | num = extract_arg (&args); |
d248b706 | 14295 | } |
0d381245 | 14296 | } |
c906108c SS |
14297 | } |
14298 | ||
d0fe4701 XR |
14299 | /* The disable command disables the specified breakpoints/locations |
14300 | (or all defined breakpoints) so they're no longer effective in | |
14301 | stopping the inferior. ARGS may be in any of the forms defined in | |
14302 | extract_bp_number_and_location. */ | |
14303 | ||
14304 | static void | |
14305 | disable_command (const char *args, int from_tty) | |
14306 | { | |
14307 | enable_disable_command (args, from_tty, false); | |
14308 | } | |
14309 | ||
c906108c | 14310 | static void |
816338b5 SS |
14311 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14312 | int count) | |
c906108c | 14313 | { |
afe38095 | 14314 | int target_resources_ok; |
c906108c SS |
14315 | |
14316 | if (bpt->type == bp_hardware_breakpoint) | |
14317 | { | |
14318 | int i; | |
c5aa993b | 14319 | i = hw_breakpoint_used_count (); |
53a5351d | 14320 | target_resources_ok = |
d92524f1 | 14321 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14322 | i + 1, 0); |
c906108c | 14323 | if (target_resources_ok == 0) |
8a3fe4f8 | 14324 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14325 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14326 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14327 | } |
14328 | ||
cc60f2e3 | 14329 | if (is_watchpoint (bpt)) |
c906108c | 14330 | { |
d07205c2 | 14331 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14332 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14333 | |
a70b8144 | 14334 | try |
c906108c | 14335 | { |
3a5c3e22 PA |
14336 | struct watchpoint *w = (struct watchpoint *) bpt; |
14337 | ||
1e718ff1 TJB |
14338 | orig_enable_state = bpt->enable_state; |
14339 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14340 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14341 | } |
230d2906 | 14342 | catch (const gdb_exception &e) |
c5aa993b | 14343 | { |
1e718ff1 | 14344 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14345 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14346 | bpt->number); | |
14347 | return; | |
c5aa993b | 14348 | } |
c906108c | 14349 | } |
0101ce28 | 14350 | |
b775012e LM |
14351 | bpt->enable_state = bp_enabled; |
14352 | ||
14353 | /* Mark breakpoint locations modified. */ | |
14354 | mark_breakpoint_modified (bpt); | |
14355 | ||
d248b706 KY |
14356 | if (target_supports_enable_disable_tracepoint () |
14357 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14358 | { | |
40cb8ca5 | 14359 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
14360 | target_enable_tracepoint (location); |
14361 | } | |
14362 | ||
b4c291bb | 14363 | bpt->disposition = disposition; |
816338b5 | 14364 | bpt->enable_count = count; |
44702360 | 14365 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14366 | |
76727919 | 14367 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14368 | } |
14369 | ||
fe3f5fa8 | 14370 | |
c906108c | 14371 | void |
fba45db2 | 14372 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14373 | { |
816338b5 | 14374 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14375 | } |
14376 | ||
d0fe4701 XR |
14377 | /* The enable command enables the specified breakpoints/locations (or |
14378 | all defined breakpoints) so they once again become (or continue to | |
14379 | be) effective in stopping the inferior. ARGS may be in any of the | |
14380 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14381 | |
c906108c | 14382 | static void |
981a3fb3 | 14383 | enable_command (const char *args, int from_tty) |
c906108c | 14384 | { |
d0fe4701 | 14385 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14386 | } |
14387 | ||
c906108c | 14388 | static void |
4495129a | 14389 | enable_once_command (const char *args, int from_tty) |
c906108c | 14390 | { |
48649e1b TT |
14391 | map_breakpoint_numbers |
14392 | (args, [&] (breakpoint *b) | |
14393 | { | |
14394 | iterate_over_related_breakpoints | |
14395 | (b, [&] (breakpoint *bpt) | |
14396 | { | |
14397 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14398 | }); | |
14399 | }); | |
816338b5 SS |
14400 | } |
14401 | ||
14402 | static void | |
4495129a | 14403 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14404 | { |
b9d61307 SM |
14405 | int count; |
14406 | ||
14407 | if (args == NULL) | |
14408 | error_no_arg (_("hit count")); | |
14409 | ||
14410 | count = get_number (&args); | |
816338b5 | 14411 | |
48649e1b TT |
14412 | map_breakpoint_numbers |
14413 | (args, [&] (breakpoint *b) | |
14414 | { | |
14415 | iterate_over_related_breakpoints | |
14416 | (b, [&] (breakpoint *bpt) | |
14417 | { | |
14418 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14419 | }); | |
14420 | }); | |
c906108c SS |
14421 | } |
14422 | ||
c906108c | 14423 | static void |
4495129a | 14424 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14425 | { |
48649e1b TT |
14426 | map_breakpoint_numbers |
14427 | (args, [&] (breakpoint *b) | |
14428 | { | |
14429 | iterate_over_related_breakpoints | |
14430 | (b, [&] (breakpoint *bpt) | |
14431 | { | |
14432 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14433 | }); | |
14434 | }); | |
c906108c SS |
14435 | } |
14436 | \f | |
1f3b5d1b PP |
14437 | /* Invalidate last known value of any hardware watchpoint if |
14438 | the memory which that value represents has been written to by | |
14439 | GDB itself. */ | |
14440 | ||
14441 | static void | |
8de0566d YQ |
14442 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14443 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14444 | const bfd_byte *data) |
14445 | { | |
43892fdf | 14446 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 14447 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 14448 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14449 | { |
3a5c3e22 | 14450 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14451 | |
850645cf | 14452 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 14453 | { |
40cb8ca5 | 14454 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
14455 | if (loc->loc_type == bp_loc_hardware_watchpoint |
14456 | && loc->address + loc->length > addr | |
14457 | && addr + len > loc->address) | |
14458 | { | |
3a5c3e22 | 14459 | wp->val = NULL; |
4c1d86d9 | 14460 | wp->val_valid = false; |
3a5c3e22 PA |
14461 | } |
14462 | } | |
1f3b5d1b PP |
14463 | } |
14464 | } | |
14465 | ||
8181d85f DJ |
14466 | /* Create and insert a breakpoint for software single step. */ |
14467 | ||
14468 | void | |
6c95b8df | 14469 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14470 | const address_space *aspace, |
4a64f543 | 14471 | CORE_ADDR next_pc) |
8181d85f | 14472 | { |
7c16b83e PA |
14473 | struct thread_info *tp = inferior_thread (); |
14474 | struct symtab_and_line sal; | |
14475 | CORE_ADDR pc = next_pc; | |
8181d85f | 14476 | |
34b7e8a6 PA |
14477 | if (tp->control.single_step_breakpoints == NULL) |
14478 | { | |
14479 | tp->control.single_step_breakpoints | |
5d5658a1 | 14480 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14481 | } |
8181d85f | 14482 | |
7c16b83e PA |
14483 | sal = find_pc_line (pc, 0); |
14484 | sal.pc = pc; | |
14485 | sal.section = find_pc_overlay (pc); | |
14486 | sal.explicit_pc = 1; | |
34b7e8a6 | 14487 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14488 | |
7c16b83e | 14489 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14490 | } |
14491 | ||
93f9a11f YQ |
14492 | /* Insert single step breakpoints according to the current state. */ |
14493 | ||
14494 | int | |
14495 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14496 | { | |
f5ea389a | 14497 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14498 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14499 | |
f5ea389a | 14500 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14501 | |
a0ff9e1a | 14502 | if (!next_pcs.empty ()) |
93f9a11f | 14503 | { |
f5ea389a | 14504 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14505 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14506 | |
a0ff9e1a | 14507 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14508 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14509 | ||
93f9a11f YQ |
14510 | return 1; |
14511 | } | |
14512 | else | |
14513 | return 0; | |
14514 | } | |
14515 | ||
34b7e8a6 | 14516 | /* See breakpoint.h. */ |
f02253f1 HZ |
14517 | |
14518 | int | |
7c16b83e | 14519 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14520 | const address_space *aspace, |
7c16b83e | 14521 | CORE_ADDR pc) |
1aafd4da | 14522 | { |
40cb8ca5 | 14523 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
14524 | if (loc->inserted |
14525 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14526 | return 1; | |
1aafd4da | 14527 | |
7c16b83e | 14528 | return 0; |
ef370185 JB |
14529 | } |
14530 | ||
14531 | /* Check whether a software single-step breakpoint is inserted at | |
14532 | PC. */ | |
14533 | ||
14534 | int | |
accd0bcd | 14535 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14536 | CORE_ADDR pc) |
14537 | { | |
43892fdf | 14538 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
14539 | { |
14540 | if (bpt->type == bp_single_step | |
14541 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14542 | return 1; | |
14543 | } | |
14544 | return 0; | |
1aafd4da UW |
14545 | } |
14546 | ||
1042e4c0 SS |
14547 | /* Tracepoint-specific operations. */ |
14548 | ||
14549 | /* Set tracepoint count to NUM. */ | |
14550 | static void | |
14551 | set_tracepoint_count (int num) | |
14552 | { | |
14553 | tracepoint_count = num; | |
4fa62494 | 14554 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14555 | } |
14556 | ||
70221824 | 14557 | static void |
0b39b52e | 14558 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14559 | { |
ffc2605c TT |
14560 | event_location_up location = string_to_event_location (&arg, |
14561 | current_language); | |
bac7c5cf GB |
14562 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14563 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14564 | |
558a9d82 | 14565 | create_breakpoint (get_current_arch (), |
ffc2605c | 14566 | location.get (), |
10a636cc | 14567 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14568 | 0 /* tempflag */, |
14569 | bp_tracepoint /* type_wanted */, | |
14570 | 0 /* Ignore count */, | |
14571 | pending_break_support, | |
14572 | ops, | |
14573 | from_tty, | |
14574 | 1 /* enabled */, | |
14575 | 0 /* internal */, 0); | |
1042e4c0 SS |
14576 | } |
14577 | ||
70221824 | 14578 | static void |
0b39b52e | 14579 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14580 | { |
ffc2605c TT |
14581 | event_location_up location = string_to_event_location (&arg, |
14582 | current_language); | |
558a9d82 | 14583 | create_breakpoint (get_current_arch (), |
ffc2605c | 14584 | location.get (), |
10a636cc | 14585 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14586 | 0 /* tempflag */, |
14587 | bp_fast_tracepoint /* type_wanted */, | |
14588 | 0 /* Ignore count */, | |
14589 | pending_break_support, | |
14590 | &tracepoint_breakpoint_ops, | |
14591 | from_tty, | |
14592 | 1 /* enabled */, | |
14593 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14594 | } |
14595 | ||
14596 | /* strace command implementation. Creates a static tracepoint. */ | |
14597 | ||
70221824 | 14598 | static void |
0b39b52e | 14599 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14600 | { |
983af33b | 14601 | struct breakpoint_ops *ops; |
ffc2605c | 14602 | event_location_up location; |
983af33b SDJ |
14603 | |
14604 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14605 | or with a normal static tracepoint. */ | |
61012eef | 14606 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14607 | { |
14608 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14609 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14610 | } |
983af33b | 14611 | else |
f00aae0f KS |
14612 | { |
14613 | ops = &tracepoint_breakpoint_ops; | |
14614 | location = string_to_event_location (&arg, current_language); | |
14615 | } | |
983af33b | 14616 | |
558a9d82 | 14617 | create_breakpoint (get_current_arch (), |
ffc2605c | 14618 | location.get (), |
10a636cc | 14619 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14620 | 0 /* tempflag */, |
14621 | bp_static_tracepoint /* type_wanted */, | |
14622 | 0 /* Ignore count */, | |
14623 | pending_break_support, | |
14624 | ops, | |
14625 | from_tty, | |
14626 | 1 /* enabled */, | |
14627 | 0 /* internal */, 0); | |
7a697b8d SS |
14628 | } |
14629 | ||
409873ef SS |
14630 | /* Set up a fake reader function that gets command lines from a linked |
14631 | list that was acquired during tracepoint uploading. */ | |
14632 | ||
14633 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14634 | static int next_cmd; |
409873ef SS |
14635 | |
14636 | static char * | |
14637 | read_uploaded_action (void) | |
14638 | { | |
a18ba4e4 | 14639 | char *rslt = nullptr; |
409873ef | 14640 | |
a18ba4e4 SM |
14641 | if (next_cmd < this_utp->cmd_strings.size ()) |
14642 | { | |
67aa1f3c | 14643 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14644 | next_cmd++; |
14645 | } | |
409873ef SS |
14646 | |
14647 | return rslt; | |
14648 | } | |
14649 | ||
00bf0b85 SS |
14650 | /* Given information about a tracepoint as recorded on a target (which |
14651 | can be either a live system or a trace file), attempt to create an | |
14652 | equivalent GDB tracepoint. This is not a reliable process, since | |
14653 | the target does not necessarily have all the information used when | |
14654 | the tracepoint was originally defined. */ | |
14655 | ||
d9b3f62e | 14656 | struct tracepoint * |
00bf0b85 | 14657 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14658 | { |
f2fc3015 TT |
14659 | const char *addr_str; |
14660 | char small_buf[100]; | |
d9b3f62e | 14661 | struct tracepoint *tp; |
fd9b8c24 | 14662 | |
409873ef | 14663 | if (utp->at_string) |
67aa1f3c | 14664 | addr_str = utp->at_string.get (); |
409873ef SS |
14665 | else |
14666 | { | |
14667 | /* In the absence of a source location, fall back to raw | |
14668 | address. Since there is no way to confirm that the address | |
14669 | means the same thing as when the trace was started, warn the | |
14670 | user. */ | |
3e43a32a MS |
14671 | warning (_("Uploaded tracepoint %d has no " |
14672 | "source location, using raw address"), | |
409873ef | 14673 | utp->number); |
8c042590 | 14674 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14675 | addr_str = small_buf; |
14676 | } | |
14677 | ||
14678 | /* There's not much we can do with a sequence of bytecodes. */ | |
14679 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14680 | warning (_("Uploaded tracepoint %d condition " |
14681 | "has no source form, ignoring it"), | |
409873ef | 14682 | utp->number); |
d5551862 | 14683 | |
ffc2605c TT |
14684 | event_location_up location = string_to_event_location (&addr_str, |
14685 | current_language); | |
8cdf0e15 | 14686 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14687 | location.get (), |
67aa1f3c | 14688 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 14689 | false /* force_condition */, |
e7e0cddf | 14690 | 0 /* parse cond/thread */, |
8cdf0e15 | 14691 | 0 /* tempflag */, |
0fb4aa4b | 14692 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14693 | 0 /* Ignore count */, |
14694 | pending_break_support, | |
348d480f | 14695 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14696 | 0 /* from_tty */, |
84f4c1fe | 14697 | utp->enabled /* enabled */, |
44f238bb PA |
14698 | 0 /* internal */, |
14699 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14700 | return NULL; |
fd9b8c24 | 14701 | |
409873ef | 14702 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14703 | tp = get_tracepoint (tracepoint_count); |
14704 | gdb_assert (tp != NULL); | |
d5551862 | 14705 | |
00bf0b85 SS |
14706 | if (utp->pass > 0) |
14707 | { | |
8c042590 | 14708 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14709 | tp->number); |
00bf0b85 | 14710 | |
409873ef | 14711 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14712 | } |
14713 | ||
409873ef SS |
14714 | /* If we have uploaded versions of the original commands, set up a |
14715 | special-purpose "reader" function and call the usual command line | |
14716 | reader, then pass the result to the breakpoint command-setting | |
14717 | function. */ | |
a18ba4e4 | 14718 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14719 | { |
12973681 | 14720 | counted_command_line cmd_list; |
00bf0b85 | 14721 | |
409873ef | 14722 | this_utp = utp; |
3149d8c1 | 14723 | next_cmd = 0; |
d5551862 | 14724 | |
60b3cef2 | 14725 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14726 | |
c1fc2657 | 14727 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14728 | } |
a18ba4e4 SM |
14729 | else if (!utp->actions.empty () |
14730 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14731 | warning (_("Uploaded tracepoint %d actions " |
14732 | "have no source form, ignoring them"), | |
409873ef | 14733 | utp->number); |
00bf0b85 | 14734 | |
f196051f | 14735 | /* Copy any status information that might be available. */ |
c1fc2657 | 14736 | tp->hit_count = utp->hit_count; |
f196051f SS |
14737 | tp->traceframe_usage = utp->traceframe_usage; |
14738 | ||
00bf0b85 | 14739 | return tp; |
d9b3f62e | 14740 | } |
00bf0b85 | 14741 | |
1042e4c0 SS |
14742 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14743 | omitted. */ | |
14744 | ||
14745 | static void | |
1d12d88f | 14746 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14747 | { |
79a45e25 | 14748 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14749 | int num_printed; |
1042e4c0 | 14750 | |
5c458ae8 | 14751 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14752 | |
14753 | if (num_printed == 0) | |
1042e4c0 | 14754 | { |
e5a67952 | 14755 | if (args == NULL || *args == '\0') |
112e8700 | 14756 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14757 | else |
112e8700 | 14758 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14759 | } |
ad443146 SS |
14760 | |
14761 | default_collect_info (); | |
1042e4c0 SS |
14762 | } |
14763 | ||
4a64f543 | 14764 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14765 | Not supported by all targets. */ |
14766 | static void | |
5fed81ff | 14767 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14768 | { |
14769 | enable_command (args, from_tty); | |
14770 | } | |
14771 | ||
4a64f543 | 14772 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14773 | Not supported by all targets. */ |
14774 | static void | |
5fed81ff | 14775 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14776 | { |
14777 | disable_command (args, from_tty); | |
14778 | } | |
14779 | ||
4a64f543 | 14780 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14781 | static void |
4495129a | 14782 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14783 | { |
1042e4c0 SS |
14784 | dont_repeat (); |
14785 | ||
14786 | if (arg == 0) | |
14787 | { | |
14788 | int breaks_to_delete = 0; | |
14789 | ||
14790 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
14791 | Do not delete internal or call-dummy breakpoints, these |
14792 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 14793 | argument. */ |
f6d17b2b | 14794 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 14795 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
14796 | { |
14797 | breaks_to_delete = 1; | |
14798 | break; | |
14799 | } | |
1042e4c0 SS |
14800 | |
14801 | /* Ask user only if there are some breakpoints to delete. */ | |
14802 | if (!from_tty | |
14803 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14804 | { | |
1428b37a | 14805 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 14806 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14807 | delete_breakpoint (b); |
1042e4c0 SS |
14808 | } |
14809 | } | |
14810 | else | |
48649e1b | 14811 | map_breakpoint_numbers |
b926417a | 14812 | (arg, [&] (breakpoint *br) |
48649e1b | 14813 | { |
b926417a | 14814 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14815 | }); |
1042e4c0 SS |
14816 | } |
14817 | ||
197f0a60 TT |
14818 | /* Helper function for trace_pass_command. */ |
14819 | ||
14820 | static void | |
d9b3f62e | 14821 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14822 | { |
d9b3f62e | 14823 | tp->pass_count = count; |
76727919 | 14824 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14825 | if (from_tty) |
14826 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14827 | tp->number, count); |
197f0a60 TT |
14828 | } |
14829 | ||
1042e4c0 SS |
14830 | /* Set passcount for tracepoint. |
14831 | ||
14832 | First command argument is passcount, second is tracepoint number. | |
14833 | If tracepoint number omitted, apply to most recently defined. | |
14834 | Also accepts special argument "all". */ | |
14835 | ||
14836 | static void | |
0b39b52e | 14837 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14838 | { |
d9b3f62e | 14839 | struct tracepoint *t1; |
0b39b52e | 14840 | ULONGEST count; |
1042e4c0 SS |
14841 | |
14842 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14843 | error (_("passcount command requires an " |
14844 | "argument (count + optional TP num)")); | |
1042e4c0 | 14845 | |
0b39b52e | 14846 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14847 | |
529480d0 | 14848 | args = skip_spaces (args); |
1042e4c0 SS |
14849 | if (*args && strncasecmp (args, "all", 3) == 0) |
14850 | { | |
14851 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
14852 | if (*args) |
14853 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14854 | |
f6d17b2b | 14855 | for (breakpoint *b : all_tracepoints ()) |
197f0a60 | 14856 | { |
d9b3f62e | 14857 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14858 | trace_pass_set_count (t1, count, from_tty); |
14859 | } | |
14860 | } | |
14861 | else if (*args == '\0') | |
1042e4c0 | 14862 | { |
5fa1d40e | 14863 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14864 | if (t1) |
197f0a60 TT |
14865 | trace_pass_set_count (t1, count, from_tty); |
14866 | } | |
14867 | else | |
14868 | { | |
bfd28288 PA |
14869 | number_or_range_parser parser (args); |
14870 | while (!parser.finished ()) | |
1042e4c0 | 14871 | { |
bfd28288 | 14872 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14873 | if (t1) |
14874 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14875 | } |
14876 | } | |
1042e4c0 SS |
14877 | } |
14878 | ||
d9b3f62e | 14879 | struct tracepoint * |
1042e4c0 SS |
14880 | get_tracepoint (int num) |
14881 | { | |
f6d17b2b | 14882 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14883 | if (t->number == num) |
d9b3f62e | 14884 | return (struct tracepoint *) t; |
1042e4c0 SS |
14885 | |
14886 | return NULL; | |
14887 | } | |
14888 | ||
d5551862 SS |
14889 | /* Find the tracepoint with the given target-side number (which may be |
14890 | different from the tracepoint number after disconnecting and | |
14891 | reconnecting). */ | |
14892 | ||
d9b3f62e | 14893 | struct tracepoint * |
d5551862 SS |
14894 | get_tracepoint_by_number_on_target (int num) |
14895 | { | |
f6d17b2b | 14896 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
14897 | { |
14898 | struct tracepoint *t = (struct tracepoint *) b; | |
14899 | ||
14900 | if (t->number_on_target == num) | |
14901 | return t; | |
14902 | } | |
d5551862 SS |
14903 | |
14904 | return NULL; | |
14905 | } | |
14906 | ||
1042e4c0 | 14907 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14908 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14909 | If the argument is missing, the most recent tracepoint |
14910 | (tracepoint_count) is returned. */ | |
14911 | ||
d9b3f62e | 14912 | struct tracepoint * |
0b39b52e | 14913 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14914 | number_or_range_parser *parser) |
1042e4c0 | 14915 | { |
1042e4c0 | 14916 | int tpnum; |
0b39b52e | 14917 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14918 | |
bfd28288 | 14919 | if (parser != NULL) |
197f0a60 | 14920 | { |
bfd28288 PA |
14921 | gdb_assert (!parser->finished ()); |
14922 | tpnum = parser->get_number (); | |
197f0a60 TT |
14923 | } |
14924 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14925 | tpnum = tracepoint_count; |
1042e4c0 | 14926 | else |
197f0a60 | 14927 | tpnum = get_number (arg); |
1042e4c0 SS |
14928 | |
14929 | if (tpnum <= 0) | |
14930 | { | |
14931 | if (instring && *instring) | |
14932 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14933 | instring); | |
14934 | else | |
5fa1d40e | 14935 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14936 | return NULL; |
14937 | } | |
14938 | ||
f6d17b2b | 14939 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 SS |
14940 | if (t->number == tpnum) |
14941 | { | |
d9b3f62e | 14942 | return (struct tracepoint *) t; |
1042e4c0 SS |
14943 | } |
14944 | ||
1042e4c0 SS |
14945 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14946 | return NULL; | |
14947 | } | |
14948 | ||
d9b3f62e PA |
14949 | void |
14950 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14951 | { | |
14952 | if (b->thread != -1) | |
14953 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14954 | ||
14955 | if (b->task != 0) | |
14956 | fprintf_unfiltered (fp, " task %d", b->task); | |
14957 | ||
14958 | fprintf_unfiltered (fp, "\n"); | |
14959 | } | |
14960 | ||
6149aea9 PA |
14961 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14962 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14963 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14964 | true. */ |
6149aea9 | 14965 | |
1042e4c0 | 14966 | static void |
4495129a | 14967 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14968 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 14969 | { |
6149aea9 | 14970 | int any = 0; |
6149aea9 | 14971 | int extra_trace_bits = 0; |
1042e4c0 | 14972 | |
6149aea9 PA |
14973 | if (filename == 0 || *filename == 0) |
14974 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14975 | |
14976 | /* See if we have anything to save. */ | |
43892fdf | 14977 | for (breakpoint *tp : all_breakpoints ()) |
1042e4c0 | 14978 | { |
6149aea9 | 14979 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14980 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14981 | continue; |
14982 | ||
14983 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14984 | if (filter && !filter (tp)) | |
14985 | continue; | |
14986 | ||
14987 | any = 1; | |
14988 | ||
14989 | if (is_tracepoint (tp)) | |
14990 | { | |
14991 | extra_trace_bits = 1; | |
14992 | ||
14993 | /* We can stop searching. */ | |
14994 | break; | |
14995 | } | |
1042e4c0 | 14996 | } |
6149aea9 PA |
14997 | |
14998 | if (!any) | |
1042e4c0 | 14999 | { |
6149aea9 | 15000 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15001 | return; |
15002 | } | |
15003 | ||
ee0c3293 | 15004 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15005 | |
15006 | stdio_file fp; | |
15007 | ||
ee0c3293 | 15008 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15009 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15010 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15011 | |
6149aea9 | 15012 | if (extra_trace_bits) |
d7e74731 | 15013 | save_trace_state_variables (&fp); |
8bf6485c | 15014 | |
43892fdf | 15015 | for (breakpoint *tp : all_breakpoints ()) |
1042e4c0 | 15016 | { |
6149aea9 | 15017 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15018 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15019 | continue; |
8bf6485c | 15020 | |
6149aea9 PA |
15021 | /* If we have a filter, only save the breakpoints it accepts. */ |
15022 | if (filter && !filter (tp)) | |
15023 | continue; | |
15024 | ||
d7e74731 | 15025 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15026 | |
6149aea9 PA |
15027 | /* Note, we can't rely on tp->number for anything, as we can't |
15028 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15029 | instead. */ | |
15030 | ||
15031 | if (tp->cond_string) | |
d7e74731 | 15032 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15033 | |
15034 | if (tp->ignore_count) | |
d7e74731 | 15035 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15036 | |
2d9442cc | 15037 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15038 | { |
d7e74731 | 15039 | fp.puts (" commands\n"); |
a7bdde9e | 15040 | |
d7e74731 | 15041 | current_uiout->redirect (&fp); |
a70b8144 | 15042 | try |
1042e4c0 | 15043 | { |
d1b0a7bf | 15044 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15045 | } |
230d2906 | 15046 | catch (const gdb_exception &ex) |
492d29ea | 15047 | { |
112e8700 | 15048 | current_uiout->redirect (NULL); |
eedc3f4f | 15049 | throw; |
492d29ea | 15050 | } |
1042e4c0 | 15051 | |
112e8700 | 15052 | current_uiout->redirect (NULL); |
d7e74731 | 15053 | fp.puts (" end\n"); |
1042e4c0 | 15054 | } |
6149aea9 PA |
15055 | |
15056 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15057 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15058 | |
15059 | /* If this is a multi-location breakpoint, check if the locations | |
15060 | should be individually disabled. Watchpoint locations are | |
15061 | special, and not user visible. */ | |
15062 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15063 | { | |
6149aea9 PA |
15064 | int n = 1; |
15065 | ||
40cb8ca5 SM |
15066 | for (bp_location *loc : tp->locations ()) |
15067 | { | |
15068 | if (!loc->enabled) | |
15069 | fp.printf ("disable $bpnum.%d\n", n); | |
15070 | ||
15071 | n++; | |
15072 | } | |
6149aea9 | 15073 | } |
1042e4c0 | 15074 | } |
8bf6485c | 15075 | |
6149aea9 | 15076 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15077 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15078 | |
1042e4c0 | 15079 | if (from_tty) |
ee0c3293 | 15080 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15081 | } |
15082 | ||
15083 | /* The `save breakpoints' command. */ | |
15084 | ||
15085 | static void | |
4495129a | 15086 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15087 | { |
15088 | save_breakpoints (args, from_tty, NULL); | |
15089 | } | |
15090 | ||
15091 | /* The `save tracepoints' command. */ | |
15092 | ||
15093 | static void | |
4495129a | 15094 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15095 | { |
15096 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15097 | } |
15098 | ||
c906108c | 15099 | \f |
629500fa KS |
15100 | /* This help string is used to consolidate all the help string for specifying |
15101 | locations used by several commands. */ | |
15102 | ||
15103 | #define LOCATION_HELP_STRING \ | |
15104 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15105 | source filename, function name, label name, and line number.\n\ | |
15106 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15107 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15108 | \"factorial.c:fact:the_top\".\n\ | |
15109 | \n\ | |
15110 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15111 | program. Example: To specify the fourth byte past the start function\n\ | |
15112 | \"main\", use \"*main + 4\".\n\ | |
15113 | \n\ | |
15114 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15115 | syntax to specify location parameters.\n\ | |
15116 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15117 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15118 | -function fact -label the_top\".\n\ |
15119 | \n\ | |
15120 | By default, a specified function is matched against the program's\n\ | |
15121 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15122 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15123 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15124 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15125 | specified name as a complete fully-qualified name instead." |
629500fa | 15126 | |
4a64f543 MS |
15127 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15128 | commands. It is defined as a macro to prevent duplication. | |
15129 | COMMAND should be a string constant containing the name of the | |
15130 | command. */ | |
629500fa | 15131 | |
31e2b00f | 15132 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
15133 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
15134 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
15135 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
15136 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15137 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15138 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15139 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15140 | below.\n\ | |
15141 | \n\ | |
dc10affe PA |
15142 | With no LOCATION, uses current execution address of the selected\n\ |
15143 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15144 | \n\ |
15145 | THREADNUM is the number from \"info threads\".\n\ | |
15146 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
15147 | \n\ |
15148 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
15149 | it is invalid for all current locations.\n\ | |
89549d7f | 15150 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15151 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15152 | conditions are different.\n\ | |
31e2b00f AS |
15153 | \n\ |
15154 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15155 | ||
44feb3ce TT |
15156 | /* List of subcommands for "catch". */ |
15157 | static struct cmd_list_element *catch_cmdlist; | |
15158 | ||
15159 | /* List of subcommands for "tcatch". */ | |
15160 | static struct cmd_list_element *tcatch_cmdlist; | |
15161 | ||
9ac4176b | 15162 | void |
a121b7c1 | 15163 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15164 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15165 | completer_ftype *completer, |
44feb3ce TT |
15166 | void *user_data_catch, |
15167 | void *user_data_tcatch) | |
15168 | { | |
15169 | struct cmd_list_element *command; | |
15170 | ||
0450cc4c | 15171 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15172 | &catch_cmdlist); |
15173 | set_cmd_sfunc (command, sfunc); | |
15174 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15175 | set_cmd_completer (command, completer); |
44feb3ce | 15176 | |
0450cc4c | 15177 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15178 | &tcatch_cmdlist); |
15179 | set_cmd_sfunc (command, sfunc); | |
15180 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15181 | set_cmd_completer (command, completer); |
44feb3ce TT |
15182 | } |
15183 | ||
0574c78f GB |
15184 | /* Zero if any of the breakpoint's locations could be a location where |
15185 | functions have been inlined, nonzero otherwise. */ | |
15186 | ||
15187 | static int | |
15188 | is_non_inline_function (struct breakpoint *b) | |
15189 | { | |
15190 | /* The shared library event breakpoint is set on the address of a | |
15191 | non-inline function. */ | |
15192 | if (b->type == bp_shlib_event) | |
15193 | return 1; | |
15194 | ||
15195 | return 0; | |
15196 | } | |
15197 | ||
15198 | /* Nonzero if the specified PC cannot be a location where functions | |
15199 | have been inlined. */ | |
15200 | ||
15201 | int | |
accd0bcd | 15202 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15203 | const struct target_waitstatus *ws) |
0574c78f | 15204 | { |
43892fdf | 15205 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
15206 | { |
15207 | if (!is_non_inline_function (b)) | |
15208 | continue; | |
15209 | ||
40cb8ca5 | 15210 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
15211 | { |
15212 | if (!bl->shlib_disabled | |
09ac7c10 | 15213 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15214 | return 1; |
15215 | } | |
15216 | } | |
15217 | ||
15218 | return 0; | |
15219 | } | |
15220 | ||
2f202fde JK |
15221 | /* Remove any references to OBJFILE which is going to be freed. */ |
15222 | ||
15223 | void | |
15224 | breakpoint_free_objfile (struct objfile *objfile) | |
15225 | { | |
48d7020b | 15226 | for (bp_location *loc : all_bp_locations ()) |
eb822aa6 | 15227 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15228 | loc->symtab = NULL; |
15229 | } | |
15230 | ||
2060206e PA |
15231 | void |
15232 | initialize_breakpoint_ops (void) | |
15233 | { | |
15234 | static int initialized = 0; | |
15235 | ||
15236 | struct breakpoint_ops *ops; | |
15237 | ||
15238 | if (initialized) | |
15239 | return; | |
15240 | initialized = 1; | |
15241 | ||
15242 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15243 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15244 | internal and momentary breakpoints, etc.). */ | |
15245 | ops = &bkpt_base_breakpoint_ops; | |
15246 | *ops = base_breakpoint_ops; | |
15247 | ops->re_set = bkpt_re_set; | |
15248 | ops->insert_location = bkpt_insert_location; | |
15249 | ops->remove_location = bkpt_remove_location; | |
15250 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15251 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15252 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15253 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15254 | |
15255 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15256 | ops = &bkpt_breakpoint_ops; | |
15257 | *ops = bkpt_base_breakpoint_ops; | |
15258 | ops->re_set = bkpt_re_set; | |
15259 | ops->resources_needed = bkpt_resources_needed; | |
15260 | ops->print_it = bkpt_print_it; | |
15261 | ops->print_mention = bkpt_print_mention; | |
15262 | ops->print_recreate = bkpt_print_recreate; | |
15263 | ||
15264 | /* Ranged breakpoints. */ | |
15265 | ops = &ranged_breakpoint_ops; | |
15266 | *ops = bkpt_breakpoint_ops; | |
15267 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15268 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15269 | ops->print_it = print_it_ranged_breakpoint; | |
15270 | ops->print_one = print_one_ranged_breakpoint; | |
15271 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15272 | ops->print_mention = print_mention_ranged_breakpoint; | |
15273 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15274 | ||
15275 | /* Internal breakpoints. */ | |
15276 | ops = &internal_breakpoint_ops; | |
15277 | *ops = bkpt_base_breakpoint_ops; | |
15278 | ops->re_set = internal_bkpt_re_set; | |
15279 | ops->check_status = internal_bkpt_check_status; | |
15280 | ops->print_it = internal_bkpt_print_it; | |
15281 | ops->print_mention = internal_bkpt_print_mention; | |
15282 | ||
15283 | /* Momentary breakpoints. */ | |
15284 | ops = &momentary_breakpoint_ops; | |
15285 | *ops = bkpt_base_breakpoint_ops; | |
15286 | ops->re_set = momentary_bkpt_re_set; | |
15287 | ops->check_status = momentary_bkpt_check_status; | |
15288 | ops->print_it = momentary_bkpt_print_it; | |
15289 | ops->print_mention = momentary_bkpt_print_mention; | |
15290 | ||
55aa24fb SDJ |
15291 | /* Probe breakpoints. */ |
15292 | ops = &bkpt_probe_breakpoint_ops; | |
15293 | *ops = bkpt_breakpoint_ops; | |
15294 | ops->insert_location = bkpt_probe_insert_location; | |
15295 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15296 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15297 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15298 | |
2060206e PA |
15299 | /* Watchpoints. */ |
15300 | ops = &watchpoint_breakpoint_ops; | |
15301 | *ops = base_breakpoint_ops; | |
15302 | ops->re_set = re_set_watchpoint; | |
15303 | ops->insert_location = insert_watchpoint; | |
15304 | ops->remove_location = remove_watchpoint; | |
15305 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15306 | ops->check_status = check_status_watchpoint; | |
15307 | ops->resources_needed = resources_needed_watchpoint; | |
15308 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15309 | ops->print_it = print_it_watchpoint; | |
15310 | ops->print_mention = print_mention_watchpoint; | |
15311 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15312 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15313 | |
15314 | /* Masked watchpoints. */ | |
15315 | ops = &masked_watchpoint_breakpoint_ops; | |
15316 | *ops = watchpoint_breakpoint_ops; | |
15317 | ops->insert_location = insert_masked_watchpoint; | |
15318 | ops->remove_location = remove_masked_watchpoint; | |
15319 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15320 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15321 | ops->print_it = print_it_masked_watchpoint; | |
15322 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15323 | ops->print_mention = print_mention_masked_watchpoint; | |
15324 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15325 | ||
15326 | /* Tracepoints. */ | |
15327 | ops = &tracepoint_breakpoint_ops; | |
15328 | *ops = base_breakpoint_ops; | |
15329 | ops->re_set = tracepoint_re_set; | |
15330 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15331 | ops->print_one_detail = tracepoint_print_one_detail; | |
15332 | ops->print_mention = tracepoint_print_mention; | |
15333 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15334 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15335 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15336 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15337 | |
55aa24fb SDJ |
15338 | /* Probe tracepoints. */ |
15339 | ops = &tracepoint_probe_breakpoint_ops; | |
15340 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15341 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15342 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15343 | |
983af33b SDJ |
15344 | /* Static tracepoints with marker (`-m'). */ |
15345 | ops = &strace_marker_breakpoint_ops; | |
15346 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15347 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15348 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15349 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15350 | |
15351 | /* Fork catchpoints. */ | |
15352 | ops = &catch_fork_breakpoint_ops; | |
15353 | *ops = base_breakpoint_ops; | |
15354 | ops->insert_location = insert_catch_fork; | |
15355 | ops->remove_location = remove_catch_fork; | |
15356 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15357 | ops->print_it = print_it_catch_fork; | |
15358 | ops->print_one = print_one_catch_fork; | |
15359 | ops->print_mention = print_mention_catch_fork; | |
15360 | ops->print_recreate = print_recreate_catch_fork; | |
15361 | ||
15362 | /* Vfork catchpoints. */ | |
15363 | ops = &catch_vfork_breakpoint_ops; | |
15364 | *ops = base_breakpoint_ops; | |
15365 | ops->insert_location = insert_catch_vfork; | |
15366 | ops->remove_location = remove_catch_vfork; | |
15367 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15368 | ops->print_it = print_it_catch_vfork; | |
15369 | ops->print_one = print_one_catch_vfork; | |
15370 | ops->print_mention = print_mention_catch_vfork; | |
15371 | ops->print_recreate = print_recreate_catch_vfork; | |
15372 | ||
15373 | /* Exec catchpoints. */ | |
15374 | ops = &catch_exec_breakpoint_ops; | |
15375 | *ops = base_breakpoint_ops; | |
2060206e PA |
15376 | ops->insert_location = insert_catch_exec; |
15377 | ops->remove_location = remove_catch_exec; | |
15378 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15379 | ops->print_it = print_it_catch_exec; | |
15380 | ops->print_one = print_one_catch_exec; | |
15381 | ops->print_mention = print_mention_catch_exec; | |
15382 | ops->print_recreate = print_recreate_catch_exec; | |
15383 | ||
edcc5120 TT |
15384 | /* Solib-related catchpoints. */ |
15385 | ops = &catch_solib_breakpoint_ops; | |
15386 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15387 | ops->insert_location = insert_catch_solib; |
15388 | ops->remove_location = remove_catch_solib; | |
15389 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15390 | ops->check_status = check_status_catch_solib; | |
15391 | ops->print_it = print_it_catch_solib; | |
15392 | ops->print_one = print_one_catch_solib; | |
15393 | ops->print_mention = print_mention_catch_solib; | |
15394 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15395 | |
15396 | ops = &dprintf_breakpoint_ops; | |
15397 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15398 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15399 | ops->resources_needed = bkpt_resources_needed; |
15400 | ops->print_it = bkpt_print_it; | |
15401 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15402 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15403 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15404 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15405 | } |
15406 | ||
8bfd80db YQ |
15407 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15408 | ||
15409 | static struct cmd_list_element *enablebreaklist = NULL; | |
15410 | ||
8588b356 SM |
15411 | /* See breakpoint.h. */ |
15412 | ||
15413 | cmd_list_element *commands_cmd_element = nullptr; | |
15414 | ||
6c265988 | 15415 | void _initialize_breakpoint (); |
c906108c | 15416 | void |
6c265988 | 15417 | _initialize_breakpoint () |
c906108c SS |
15418 | { |
15419 | struct cmd_list_element *c; | |
15420 | ||
2060206e PA |
15421 | initialize_breakpoint_ops (); |
15422 | ||
c90e7d63 SM |
15423 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
15424 | "breakpoint"); | |
15425 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
15426 | "breakpoint"); | |
15427 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
15428 | "breakpoint"); | |
84acb35a | 15429 | |
c906108c SS |
15430 | breakpoint_chain = 0; |
15431 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15432 | before a breakpoint is set. */ | |
15433 | breakpoint_count = 0; | |
15434 | ||
1042e4c0 SS |
15435 | tracepoint_count = 0; |
15436 | ||
1bedd215 AC |
15437 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15438 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15439 | Usage is `ignore N COUNT'.")); | |
c906108c | 15440 | |
8588b356 SM |
15441 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15442 | commands_command, _("\ | |
18da0c51 MG |
15443 | Set commands to be executed when the given breakpoints are hit.\n\ |
15444 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15445 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15446 | (e.g. `5-7').\n\ | |
c906108c SS |
15447 | With no argument, the targeted breakpoint is the last one set.\n\ |
15448 | The commands themselves follow starting on the next line.\n\ | |
15449 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15450 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15451 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15452 | |
b1d4d8d1 TBA |
15453 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
15454 | static std::string condition_command_help | |
15455 | = gdb::option::build_help (_("\ | |
1bedd215 | 15456 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 15457 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 15458 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
15459 | \n\ |
15460 | Options:\n\ | |
15461 | %OPTIONS%"), cc_opts); | |
15462 | ||
15463 | c = add_com ("condition", class_breakpoint, condition_command, | |
15464 | condition_command_help.c_str ()); | |
15465 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 15466 | |
1bedd215 | 15467 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15468 | Set a temporary breakpoint.\n\ |
c906108c SS |
15469 | Like \"break\" except the breakpoint is only temporary,\n\ |
15470 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15471 | by using \"enable delete\" on the breakpoint number.\n\ |
15472 | \n" | |
15473 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15474 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15475 | |
1bedd215 | 15476 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15477 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15478 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15479 | some target hardware may not have this support.\n\ |
15480 | \n" | |
15481 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15482 | set_cmd_completer (c, location_completer); |
c906108c | 15483 | |
1bedd215 | 15484 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15485 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15486 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15487 | so it will be deleted when hit.\n\ |
15488 | \n" | |
15489 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15490 | set_cmd_completer (c, location_completer); |
c906108c | 15491 | |
3947f654 SM |
15492 | cmd_list_element *enable_cmd |
15493 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
15494 | Enable all or some breakpoints.\n\ |
15495 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15496 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15497 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15498 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15499 | With a subcommand you can enable temporarily."), |
3947f654 | 15500 | &enablelist, 1, &cmdlist); |
c906108c | 15501 | |
3947f654 | 15502 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 15503 | |
84951ab5 | 15504 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15505 | Enable all or some breakpoints.\n\ |
15506 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15507 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15508 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15509 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 15510 | &enablebreaklist, 1, &enablelist); |
c906108c | 15511 | |
1a966eab | 15512 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15513 | Enable some breakpoints for one hit.\n\ |
15514 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15515 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15516 | &enablebreaklist); |
15517 | ||
1a966eab | 15518 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15519 | Enable some breakpoints and delete when hit.\n\ |
15520 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15521 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15522 | &enablebreaklist); |
15523 | ||
816338b5 | 15524 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15525 | Enable some breakpoints for COUNT hits.\n\ |
15526 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15527 | If a breakpoint is hit while enabled in this fashion,\n\ |
15528 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15529 | &enablebreaklist); | |
15530 | ||
1a966eab | 15531 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15532 | Enable some breakpoints and delete when hit.\n\ |
15533 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15534 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15535 | &enablelist); |
15536 | ||
1a966eab | 15537 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15538 | Enable some breakpoints for one hit.\n\ |
15539 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15540 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15541 | &enablelist); |
15542 | ||
15543 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15544 | Enable some breakpoints for COUNT hits.\n\ |
15545 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15546 | If a breakpoint is hit while enabled in this fashion,\n\ |
15547 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15548 | &enablelist); |
15549 | ||
3947f654 SM |
15550 | cmd_list_element *disable_cmd |
15551 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
15552 | Disable all or some breakpoints.\n\ |
15553 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15554 | Arguments are breakpoint numbers with spaces in between.\n\ |
15555 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15556 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
15557 | &disablelist, 1, &cmdlist); |
15558 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
15559 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 15560 | |
57b4f16e | 15561 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
15562 | Disable all or some breakpoints.\n\ |
15563 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15564 | Arguments are breakpoint numbers with spaces in between.\n\ |
15565 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15566 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15567 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15568 | &disablelist); |
15569 | ||
3947f654 SM |
15570 | cmd_list_element *delete_cmd |
15571 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
15572 | Delete all or some breakpoints.\n\ |
15573 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15574 | Arguments are breakpoint numbers with spaces in between.\n\ |
15575 | To delete all breakpoints, give no argument.\n\ | |
15576 | \n\ | |
590042fc | 15577 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
15578 | &deletelist, 1, &cmdlist); |
15579 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
15580 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 15581 | |
57b4f16e | 15582 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
15583 | Delete all or some breakpoints or auto-display expressions.\n\ |
15584 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15585 | Arguments are breakpoint numbers with spaces in between.\n\ |
15586 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15587 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15588 | &deletelist); |
15589 | ||
3947f654 SM |
15590 | cmd_list_element *clear_cmd |
15591 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
15592 | Clear breakpoint at specified location.\n\ |
15593 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15594 | \n\ |
15595 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15596 | is executing in.\n" |
89549d7f | 15597 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15598 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 15599 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 15600 | |
3947f654 SM |
15601 | cmd_list_element *break_cmd |
15602 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 15603 | Set breakpoint at specified location.\n" |
31e2b00f | 15604 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 15605 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 15606 | |
3947f654 SM |
15607 | add_com_alias ("b", break_cmd, class_run, 1); |
15608 | add_com_alias ("br", break_cmd, class_run, 1); | |
15609 | add_com_alias ("bre", break_cmd, class_run, 1); | |
15610 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 15611 | |
c906108c SS |
15612 | if (dbx_commands) |
15613 | { | |
1bedd215 AC |
15614 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15615 | Break in function/address or break at a line in the current file."), | |
2f822da5 | 15616 | &stoplist, 1, &cmdlist); |
c5aa993b | 15617 | add_cmd ("in", class_breakpoint, stopin_command, |
1a966eab | 15618 | _("Break in function or address."), &stoplist); |
c5aa993b | 15619 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15620 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15621 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15622 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15623 | The \"Type\" column indicates one of:\n\ |
15624 | \tbreakpoint - normal breakpoint\n\ | |
15625 | \twatchpoint - watchpoint\n\ | |
15626 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15627 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15628 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15629 | address and file/line number respectively.\n\ |
15630 | \n\ | |
15631 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15632 | are set to the address of the last breakpoint listed unless the command\n\ |
15633 | is prefixed with \"server \".\n\n\ | |
c906108c | 15634 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15635 | breakpoint set.")); |
c906108c SS |
15636 | } |
15637 | ||
e0f25bd9 SM |
15638 | cmd_list_element *info_breakpoints_cmd |
15639 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 15640 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15641 | The \"Type\" column indicates one of:\n\ |
15642 | \tbreakpoint - normal breakpoint\n\ | |
15643 | \twatchpoint - watchpoint\n\ | |
15644 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15645 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15646 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15647 | address and file/line number respectively.\n\ |
15648 | \n\ | |
15649 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15650 | are set to the address of the last breakpoint listed unless the command\n\ |
15651 | is prefixed with \"server \".\n\n\ | |
c906108c | 15652 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15653 | breakpoint set.")); |
c906108c | 15654 | |
e0f25bd9 | 15655 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 15656 | |
1a966eab AC |
15657 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15658 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15659 | The \"Type\" column indicates one of:\n\ |
15660 | \tbreakpoint - normal breakpoint\n\ | |
15661 | \twatchpoint - watchpoint\n\ | |
15662 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15663 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15664 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15665 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15666 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15667 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15668 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15669 | address and file/line number respectively.\n\ |
15670 | \n\ | |
15671 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15672 | are set to the address of the last breakpoint listed unless the command\n\ |
15673 | is prefixed with \"server \".\n\n\ | |
c906108c | 15674 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15675 | breakpoint set."), |
c906108c SS |
15676 | &maintenanceinfolist); |
15677 | ||
3b6acaee | 15678 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 15679 | Set catchpoints to catch events."), |
2f822da5 | 15680 | &catch_cmdlist, |
3b6acaee | 15681 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 15682 | |
3b6acaee | 15683 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 15684 | Set temporary catchpoints to catch events."), |
2f822da5 | 15685 | &tcatch_cmdlist, |
3b6acaee | 15686 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 15687 | |
44feb3ce TT |
15688 | add_catch_command ("fork", _("Catch calls to fork."), |
15689 | catch_fork_command_1, | |
dda83cd7 | 15690 | NULL, |
44feb3ce TT |
15691 | (void *) (uintptr_t) catch_fork_permanent, |
15692 | (void *) (uintptr_t) catch_fork_temporary); | |
15693 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15694 | catch_fork_command_1, | |
dda83cd7 | 15695 | NULL, |
44feb3ce TT |
15696 | (void *) (uintptr_t) catch_vfork_permanent, |
15697 | (void *) (uintptr_t) catch_vfork_temporary); | |
15698 | add_catch_command ("exec", _("Catch calls to exec."), | |
15699 | catch_exec_command_1, | |
dda83cd7 | 15700 | NULL, |
a96d9b2e SDJ |
15701 | CATCH_PERMANENT, |
15702 | CATCH_TEMPORARY); | |
edcc5120 TT |
15703 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15704 | Usage: catch load [REGEX]\n\ | |
15705 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15706 | catch_load_command_1, | |
15707 | NULL, | |
15708 | CATCH_PERMANENT, | |
15709 | CATCH_TEMPORARY); | |
15710 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15711 | Usage: catch unload [REGEX]\n\ | |
15712 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15713 | catch_unload_command_1, | |
15714 | NULL, | |
15715 | CATCH_PERMANENT, | |
15716 | CATCH_TEMPORARY); | |
c5aa993b | 15717 | |
a15a5258 AB |
15718 | const auto opts = make_watch_options_def_group (nullptr); |
15719 | ||
15720 | static const std::string watch_help = gdb::option::build_help (_("\ | |
15721 | Set a watchpoint for EXPRESSION.\n\ | |
15722 | Usage: watch [-location] EXPRESSION\n\ | |
15723 | \n\ | |
15724 | Options:\n\ | |
15725 | %OPTIONS%\n\ | |
15726 | \n\ | |
c906108c | 15727 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
15728 | an expression changes."), opts); |
15729 | c = add_com ("watch", class_breakpoint, watch_command, | |
15730 | watch_help.c_str ()); | |
15731 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15732 | ||
15733 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
15734 | Set a read watchpoint for EXPRESSION.\n\ | |
15735 | Usage: rwatch [-location] EXPRESSION\n\ | |
15736 | \n\ | |
15737 | Options:\n\ | |
15738 | %OPTIONS%\n\ | |
15739 | \n\ | |
15740 | A read watchpoint stops execution of your program whenever the value of\n\ | |
15741 | an expression is read."), opts); | |
15742 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
15743 | rwatch_help.c_str ()); | |
15744 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15745 | ||
15746 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
15747 | Set an access watchpoint for EXPRESSION.\n\ | |
15748 | Usage: awatch [-location] EXPRESSION\n\ | |
15749 | \n\ | |
15750 | Options:\n\ | |
15751 | %OPTIONS%\n\ | |
15752 | \n\ | |
15753 | An access watchpoint stops execution of your program whenever the value\n\ | |
15754 | of an expression is either read or written."), opts); | |
15755 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
15756 | awatch_help.c_str ()); | |
15757 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 15758 | |
11db9430 | 15759 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15760 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15761 | |
920d2a44 AC |
15762 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15763 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15764 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15765 | &can_use_hw_watchpoints, _("\ | |
15766 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15767 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15768 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15769 | such is available. (However, any hardware watchpoints that were\n\ | |
15770 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15771 | hardware.)"), |
15772 | NULL, | |
920d2a44 | 15773 | show_can_use_hw_watchpoints, |
85c07804 | 15774 | &setlist, &showlist); |
c906108c SS |
15775 | |
15776 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15777 | |
1042e4c0 SS |
15778 | /* Tracepoint manipulation commands. */ |
15779 | ||
3947f654 SM |
15780 | cmd_list_element *trace_cmd |
15781 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15782 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15783 | \n" |
15784 | BREAK_ARGS_HELP ("trace") "\n\ | |
15785 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 15786 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 15787 | |
3947f654 SM |
15788 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
15789 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
15790 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
15791 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 15792 | |
7a697b8d | 15793 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15794 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15795 | \n" |
15796 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15797 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15798 | set_cmd_completer (c, location_completer); | |
15799 | ||
0fb4aa4b | 15800 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15801 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15802 | \n\ |
15803 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15804 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15805 | or -m MARKER_ID.\n\n\ | |
15806 | If a marker id is specified, probe the marker with that name. With\n\ | |
15807 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15808 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15809 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15810 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15811 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15812 | \n\ | |
15813 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15814 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15815 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15816 | conditions are different.\n\ | |
0fb4aa4b PA |
15817 | \n\ |
15818 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15819 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15820 | set_cmd_completer (c, location_completer); | |
15821 | ||
e0f25bd9 SM |
15822 | cmd_list_element *info_tracepoints_cmd |
15823 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 15824 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15825 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15826 | last tracepoint set.")); | |
15827 | ||
e0f25bd9 | 15828 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 15829 | |
5e84b7ee SM |
15830 | cmd_list_element *delete_tracepoints_cmd |
15831 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
15832 | Delete specified tracepoints.\n\ |
15833 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15834 | No argument means delete all tracepoints."), | |
15835 | &deletelist); | |
5e84b7ee | 15836 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
15837 | |
15838 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15839 | Disable specified tracepoints.\n\ | |
15840 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15841 | No argument means disable all tracepoints."), | |
15842 | &disablelist); | |
15843 | deprecate_cmd (c, "disable"); | |
15844 | ||
15845 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15846 | Enable specified tracepoints.\n\ | |
15847 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15848 | No argument means enable all tracepoints."), | |
15849 | &enablelist); | |
15850 | deprecate_cmd (c, "enable"); | |
15851 | ||
15852 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15853 | Set the passcount for a tracepoint.\n\ | |
15854 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15855 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15856 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15857 | ||
0743fc83 TT |
15858 | add_basic_prefix_cmd ("save", class_breakpoint, |
15859 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 15860 | &save_cmdlist, |
0743fc83 | 15861 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
15862 | |
15863 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15864 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15865 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15866 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15867 | session to restore them."), | |
15868 | &save_cmdlist); | |
15869 | set_cmd_completer (c, filename_completer); | |
15870 | ||
3947f654 SM |
15871 | cmd_list_element *save_tracepoints_cmd |
15872 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15873 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15874 | Use the 'source' command in another debug session to restore them."), |
15875 | &save_cmdlist); | |
3947f654 | 15876 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 15877 | |
3947f654 | 15878 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
15879 | deprecate_cmd (c, "save tracepoints"); |
15880 | ||
3b6acaee | 15881 | add_basic_prefix_cmd ("breakpoint", class_maintenance, _("\ |
590042fc | 15882 | Breakpoint specific settings.\n\ |
fa8d40ab | 15883 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15884 | pending breakpoint behavior."), |
2f822da5 | 15885 | &breakpoint_set_cmdlist, |
3b6acaee TT |
15886 | 0/*allow-unknown*/, &setlist); |
15887 | add_show_prefix_cmd ("breakpoint", class_maintenance, _("\ | |
590042fc | 15888 | Breakpoint specific settings.\n\ |
fa8d40ab | 15889 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15890 | pending breakpoint behavior."), |
2f822da5 | 15891 | &breakpoint_show_cmdlist, |
3b6acaee | 15892 | 0/*allow-unknown*/, &showlist); |
fa8d40ab | 15893 | |
7915a72c AC |
15894 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15895 | &pending_break_support, _("\ | |
15896 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15897 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15898 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15899 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15900 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15901 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15902 | NULL, |
920d2a44 | 15903 | show_pending_break_support, |
6e1d7d6c AC |
15904 | &breakpoint_set_cmdlist, |
15905 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15906 | |
15907 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15908 | |
15909 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15910 | &automatic_hardware_breakpoints, _("\ | |
15911 | Set automatic usage of hardware breakpoints."), _("\ | |
15912 | Show automatic usage of hardware breakpoints."), _("\ | |
15913 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15914 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15915 | a warning will be emitted for such breakpoints."), | |
15916 | NULL, | |
15917 | show_automatic_hardware_breakpoints, | |
15918 | &breakpoint_set_cmdlist, | |
15919 | &breakpoint_show_cmdlist); | |
74960c60 | 15920 | |
a25a5a45 PA |
15921 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15922 | &always_inserted_mode, _("\ | |
74960c60 VP |
15923 | Set mode for inserting breakpoints."), _("\ |
15924 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15925 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15926 | they're created, kept inserted even when execution stops, and removed\n\ | |
15927 | only when the user deletes them. When this mode is off (the default),\n\ | |
15928 | breakpoints are inserted only when execution continues, and removed\n\ | |
15929 | when execution stops."), | |
72d0e2c5 YQ |
15930 | NULL, |
15931 | &show_always_inserted_mode, | |
15932 | &breakpoint_set_cmdlist, | |
15933 | &breakpoint_show_cmdlist); | |
f1310107 | 15934 | |
b775012e LM |
15935 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15936 | condition_evaluation_enums, | |
15937 | &condition_evaluation_mode_1, _("\ | |
15938 | Set mode of breakpoint condition evaluation."), _("\ | |
15939 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15940 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15941 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15942 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15943 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15944 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15945 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 15946 | be set to \"host\"."), |
b775012e LM |
15947 | &set_condition_evaluation_mode, |
15948 | &show_condition_evaluation_mode, | |
15949 | &breakpoint_set_cmdlist, | |
15950 | &breakpoint_show_cmdlist); | |
15951 | ||
f1310107 TJB |
15952 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15953 | Set a breakpoint for an address range.\n\ | |
15954 | break-range START-LOCATION, END-LOCATION\n\ | |
15955 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15956 | LINENUM, for that line in the current file,\n\ | |
15957 | FILE:LINENUM, for that line in that file,\n\ | |
15958 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 15959 | or the start of the range\n\ |
f1310107 TJB |
15960 | FUNCTION, for the first line in that function,\n\ |
15961 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15962 | *ADDRESS, for the instruction at that address.\n\ | |
15963 | \n\ | |
15964 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15965 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15966 | range (including START-LOCATION and END-LOCATION).")); | |
15967 | ||
e7e0cddf | 15968 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15969 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15970 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15971 | location may be a linespec, explicit, or address location.\n" |
15972 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15973 | set_cmd_completer (c, location_completer); |
15974 | ||
15975 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15976 | dprintf_style_enums, &dprintf_style, _("\ | |
15977 | Set the style of usage for dynamic printf."), _("\ | |
15978 | Show the style of usage for dynamic printf."), _("\ | |
15979 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15980 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15981 | console, as with the \"printf\" command.\n\ | |
15982 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15983 | program; by default printf(), but you can choose a different function or\n\ | |
15984 | output stream by setting dprintf-function and dprintf-channel."), | |
15985 | update_dprintf_commands, NULL, | |
15986 | &setlist, &showlist); | |
15987 | ||
15988 | dprintf_function = xstrdup ("printf"); | |
15989 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15990 | &dprintf_function, _("\ | |
590042fc PW |
15991 | Set the function to use for dynamic printf."), _("\ |
15992 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15993 | update_dprintf_commands, NULL, |
15994 | &setlist, &showlist); | |
15995 | ||
15996 | dprintf_channel = xstrdup (""); | |
15997 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15998 | &dprintf_channel, _("\ | |
590042fc PW |
15999 | Set the channel to use for dynamic printf."), _("\ |
16000 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16001 | update_dprintf_commands, NULL, |
16002 | &setlist, &showlist); | |
16003 | ||
d3ce09f5 SS |
16004 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16005 | &disconnected_dprintf, _("\ | |
16006 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16007 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16008 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16009 | even if GDB disconnects or detaches from the target."), | |
16010 | NULL, | |
16011 | NULL, | |
16012 | &setlist, &showlist); | |
16013 | ||
16014 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
16015 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
16016 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
16017 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
16018 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 16019 | |
491144b5 | 16020 | automatic_hardware_breakpoints = true; |
f3b1572e | 16021 | |
c90e7d63 SM |
16022 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
16023 | "breakpoint"); | |
16024 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
16025 | "breakpoint"); | |
c906108c | 16026 | } |