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 | |
055c879f SM |
524 | /* See breakpoint.h. */ |
525 | ||
526 | const std::vector<bp_location *> & | |
48d7020b SM |
527 | all_bp_locations () |
528 | { | |
529 | return bp_locations; | |
530 | } | |
531 | ||
e0d9a270 SM |
532 | /* Range to iterate over breakpoint locations at a given address. */ |
533 | ||
534 | struct bp_locations_at_addr_range | |
535 | { | |
536 | using iterator = std::vector<bp_location *>::iterator; | |
537 | ||
538 | bp_locations_at_addr_range (CORE_ADDR addr) | |
539 | { | |
540 | struct compare | |
541 | { | |
542 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
543 | { return loc->address < addr_; } | |
544 | ||
545 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
546 | { return addr_ < loc->address; } | |
547 | }; | |
548 | ||
549 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
550 | addr, compare ()); | |
551 | ||
552 | m_begin = it_pair.first; | |
553 | m_end = it_pair.second; | |
554 | } | |
555 | ||
556 | iterator begin () const | |
557 | { return m_begin; } | |
558 | ||
559 | iterator end () const | |
560 | { return m_end; } | |
561 | ||
562 | private: | |
563 | iterator m_begin; | |
564 | iterator m_end; | |
565 | }; | |
566 | ||
567 | /* Return a range to iterate over all breakpoint locations exactly at address | |
568 | ADDR. | |
569 | ||
570 | If it's needed to iterate multiple times on the same range, it's possible | |
571 | to save the range in a local variable and use it multiple times: | |
572 | ||
573 | auto range = all_bp_locations_at_addr (addr); | |
574 | ||
575 | for (bp_location *loc : range) | |
576 | // use loc | |
577 | ||
578 | for (bp_location *loc : range) | |
579 | // use loc | |
580 | ||
581 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
582 | the range's boundaries. Just remember not to change the bp_locations vector | |
583 | in the mean time, as it could make the range's iterators stale. */ | |
584 | ||
585 | static bp_locations_at_addr_range | |
586 | all_bp_locations_at_addr (CORE_ADDR addr) | |
587 | { | |
588 | return bp_locations_at_addr_range (addr); | |
589 | } | |
590 | ||
4a64f543 | 591 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 592 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 593 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 594 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 595 | an address you need to read. */ |
876fa593 | 596 | |
f5336ca5 | 597 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 598 | |
4a64f543 MS |
599 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
600 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
601 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
602 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 603 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 604 | |
f5336ca5 | 605 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 606 | |
4a64f543 | 607 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
608 | from the bp_locations array, but for which a hit may still be |
609 | reported by a target. */ | |
1123588c | 610 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 611 | |
c906108c SS |
612 | /* Number of last breakpoint made. */ |
613 | ||
95a42b64 TT |
614 | static int breakpoint_count; |
615 | ||
86b17b60 PA |
616 | /* The value of `breakpoint_count' before the last command that |
617 | created breakpoints. If the last (break-like) command created more | |
618 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
619 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
620 | static int prev_breakpoint_count; | |
c906108c | 621 | |
1042e4c0 SS |
622 | /* Number of last tracepoint made. */ |
623 | ||
95a42b64 | 624 | static int tracepoint_count; |
1042e4c0 | 625 | |
6149aea9 PA |
626 | static struct cmd_list_element *breakpoint_set_cmdlist; |
627 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 628 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 629 | |
badd37ce SDJ |
630 | /* See declaration at breakpoint.h. */ |
631 | ||
632 | struct breakpoint * | |
633 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
634 | void *user_data) | |
635 | { | |
43892fdf SM |
636 | for (breakpoint *b : all_breakpoints ()) |
637 | if (func (b, user_data) != 0) | |
638 | return b; | |
badd37ce | 639 | |
43892fdf | 640 | return nullptr; |
badd37ce SDJ |
641 | } |
642 | ||
468d015d JJ |
643 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
644 | static int | |
645 | breakpoint_enabled (struct breakpoint *b) | |
646 | { | |
0d381245 | 647 | return (b->enable_state == bp_enabled); |
468d015d JJ |
648 | } |
649 | ||
c906108c SS |
650 | /* Set breakpoint count to NUM. */ |
651 | ||
95a42b64 | 652 | static void |
fba45db2 | 653 | set_breakpoint_count (int num) |
c906108c | 654 | { |
86b17b60 | 655 | prev_breakpoint_count = breakpoint_count; |
c906108c | 656 | breakpoint_count = num; |
4fa62494 | 657 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
658 | } |
659 | ||
86b17b60 PA |
660 | /* Used by `start_rbreak_breakpoints' below, to record the current |
661 | breakpoint count before "rbreak" creates any breakpoint. */ | |
662 | static int rbreak_start_breakpoint_count; | |
663 | ||
95a42b64 TT |
664 | /* Called at the start an "rbreak" command to record the first |
665 | breakpoint made. */ | |
86b17b60 | 666 | |
c80049d3 | 667 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 668 | { |
86b17b60 | 669 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
670 | } |
671 | ||
672 | /* Called at the end of an "rbreak" command to record the last | |
673 | breakpoint made. */ | |
86b17b60 | 674 | |
c80049d3 | 675 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 676 | { |
86b17b60 | 677 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
678 | } |
679 | ||
4a64f543 | 680 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
681 | |
682 | void | |
fba45db2 | 683 | clear_breakpoint_hit_counts (void) |
c906108c | 684 | { |
43892fdf | 685 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
686 | b->hit_count = 0; |
687 | } | |
688 | ||
c906108c | 689 | \f |
48cb2d85 VP |
690 | /* Return the breakpoint with the specified number, or NULL |
691 | if the number does not refer to an existing breakpoint. */ | |
692 | ||
693 | struct breakpoint * | |
694 | get_breakpoint (int num) | |
695 | { | |
43892fdf | 696 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
697 | if (b->number == num) |
698 | return b; | |
699 | ||
43892fdf | 700 | return nullptr; |
48cb2d85 | 701 | } |
5c44784c | 702 | |
c906108c | 703 | \f |
adc36818 | 704 | |
b775012e LM |
705 | /* Mark locations as "conditions have changed" in case the target supports |
706 | evaluating conditions on its side. */ | |
707 | ||
708 | static void | |
709 | mark_breakpoint_modified (struct breakpoint *b) | |
710 | { | |
b775012e LM |
711 | /* This is only meaningful if the target is |
712 | evaluating conditions and if the user has | |
713 | opted for condition evaluation on the target's | |
714 | side. */ | |
715 | if (gdb_evaluates_breakpoint_condition_p () | |
716 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
717 | return; | |
718 | ||
719 | if (!is_breakpoint (b)) | |
720 | return; | |
721 | ||
40cb8ca5 | 722 | for (bp_location *loc : b->locations ()) |
b775012e LM |
723 | loc->condition_changed = condition_modified; |
724 | } | |
725 | ||
726 | /* Mark location as "conditions have changed" in case the target supports | |
727 | evaluating conditions on its side. */ | |
728 | ||
729 | static void | |
730 | mark_breakpoint_location_modified (struct bp_location *loc) | |
731 | { | |
732 | /* This is only meaningful if the target is | |
733 | evaluating conditions and if the user has | |
734 | opted for condition evaluation on the target's | |
735 | side. */ | |
736 | if (gdb_evaluates_breakpoint_condition_p () | |
737 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
738 | ||
739 | return; | |
740 | ||
741 | if (!is_breakpoint (loc->owner)) | |
742 | return; | |
743 | ||
744 | loc->condition_changed = condition_modified; | |
745 | } | |
746 | ||
747 | /* Sets the condition-evaluation mode using the static global | |
748 | condition_evaluation_mode. */ | |
749 | ||
750 | static void | |
eb4c3f4a | 751 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
752 | struct cmd_list_element *c) |
753 | { | |
b775012e LM |
754 | const char *old_mode, *new_mode; |
755 | ||
756 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
757 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
758 | { | |
759 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
760 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
761 | "Using host evaluation mode instead.")); | |
762 | return; | |
763 | } | |
764 | ||
765 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
766 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
767 | ||
abf1152a JK |
768 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
769 | settings was "auto". */ | |
770 | condition_evaluation_mode = condition_evaluation_mode_1; | |
771 | ||
b775012e LM |
772 | /* Only update the mode if the user picked a different one. */ |
773 | if (new_mode != old_mode) | |
774 | { | |
b775012e LM |
775 | /* If the user switched to a different evaluation mode, we |
776 | need to synch the changes with the target as follows: | |
777 | ||
778 | "host" -> "target": Send all (valid) conditions to the target. | |
779 | "target" -> "host": Remove all the conditions from the target. | |
780 | */ | |
781 | ||
b775012e LM |
782 | if (new_mode == condition_evaluation_target) |
783 | { | |
784 | /* Mark everything modified and synch conditions with the | |
785 | target. */ | |
48d7020b | 786 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 787 | mark_breakpoint_location_modified (loc); |
24b21115 | 788 | } |
b775012e LM |
789 | else |
790 | { | |
791 | /* Manually mark non-duplicate locations to synch conditions | |
792 | with the target. We do this to remove all the conditions the | |
793 | target knows about. */ | |
48d7020b | 794 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
795 | if (is_breakpoint (loc->owner) && loc->inserted) |
796 | loc->needs_update = 1; | |
797 | } | |
798 | ||
799 | /* Do the update. */ | |
44702360 | 800 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
801 | } |
802 | ||
803 | return; | |
804 | } | |
805 | ||
806 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
807 | what "auto" is translating to. */ | |
808 | ||
809 | static void | |
810 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
811 | struct cmd_list_element *c, const char *value) | |
812 | { | |
813 | if (condition_evaluation_mode == condition_evaluation_auto) | |
814 | fprintf_filtered (file, | |
815 | _("Breakpoint condition evaluation " | |
816 | "mode is %s (currently %s).\n"), | |
817 | value, | |
818 | breakpoint_condition_evaluation_mode ()); | |
819 | else | |
820 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
821 | value); | |
822 | } | |
823 | ||
b5fa468f TBA |
824 | /* Parse COND_STRING in the context of LOC and set as the condition |
825 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
826 | the number of LOC within its owner. In case of parsing error, mark | |
827 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
828 | ||
829 | static void | |
830 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
831 | int bp_num, int loc_num) | |
832 | { | |
833 | bool has_junk = false; | |
834 | try | |
835 | { | |
836 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
837 | block_for_pc (loc->address), 0); | |
838 | if (*cond_string != 0) | |
839 | has_junk = true; | |
840 | else | |
841 | { | |
842 | loc->cond = std::move (new_exp); | |
843 | if (loc->disabled_by_cond && loc->enabled) | |
844 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
845 | "location %d, enabling.\n"), | |
846 | bp_num, loc_num); | |
847 | ||
848 | loc->disabled_by_cond = false; | |
849 | } | |
850 | } | |
851 | catch (const gdb_exception_error &e) | |
852 | { | |
853 | if (loc->enabled) | |
854 | { | |
855 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
856 | BP_NUM is 0 if the breakpoint is being defined for the first | |
857 | time using the "break ... if ..." command, and non-zero if | |
858 | already defined. */ | |
859 | if (bp_num != 0) | |
860 | warning (_("failed to validate condition at location %d.%d, " | |
861 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
862 | else | |
863 | warning (_("failed to validate condition at location %d, " | |
864 | "disabling:\n %s"), loc_num, e.what ()); | |
865 | } | |
866 | ||
867 | loc->disabled_by_cond = true; | |
868 | } | |
869 | ||
870 | if (has_junk) | |
871 | error (_("Garbage '%s' follows condition"), cond_string); | |
872 | } | |
873 | ||
adc36818 | 874 | void |
7a26bd4d | 875 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 876 | int from_tty, bool force) |
adc36818 | 877 | { |
4c55e970 | 878 | if (*exp == 0) |
3a5c3e22 | 879 | { |
4c55e970 TBA |
880 | xfree (b->cond_string); |
881 | b->cond_string = nullptr; | |
3a5c3e22 | 882 | |
4c55e970 | 883 | if (is_watchpoint (b)) |
78319c15 | 884 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
885 | else |
886 | { | |
b5fa468f | 887 | int loc_num = 1; |
40cb8ca5 | 888 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
889 | { |
890 | loc->cond.reset (); | |
b5fa468f TBA |
891 | if (loc->disabled_by_cond && loc->enabled) |
892 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
893 | "location %d, enabling.\n"), | |
894 | b->number, loc_num); | |
895 | loc->disabled_by_cond = false; | |
896 | loc_num++; | |
4c55e970 TBA |
897 | |
898 | /* No need to free the condition agent expression | |
899 | bytecode (if we have one). We will handle this | |
900 | when we go through update_global_location_list. */ | |
901 | } | |
902 | } | |
1e620590 | 903 | |
adc36818 PM |
904 | if (from_tty) |
905 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
906 | } | |
907 | else | |
908 | { | |
adc36818 PM |
909 | if (is_watchpoint (b)) |
910 | { | |
699bd4cf | 911 | innermost_block_tracker tracker; |
78319c15 | 912 | const char *arg = exp; |
4c55e970 | 913 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 914 | if (*arg != 0) |
adc36818 | 915 | error (_("Junk at end of expression")); |
78319c15 | 916 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 917 | w->cond_exp = std::move (new_exp); |
699bd4cf | 918 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
919 | } |
920 | else | |
921 | { | |
4c55e970 TBA |
922 | /* Parse and set condition expressions. We make two passes. |
923 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
924 | is valid in at least one location. If so, the condition |
925 | would be accepted. So we go ahead and set the locations' | |
926 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
927 | the error and the condition string will be rejected. |
928 | This two-pass approach is taken to avoid setting the | |
929 | state of locations in case of a reject. */ | |
40cb8ca5 | 930 | for (bp_location *loc : b->locations ()) |
4c55e970 | 931 | { |
b5fa468f TBA |
932 | try |
933 | { | |
934 | const char *arg = exp; | |
935 | parse_exp_1 (&arg, loc->address, | |
936 | block_for_pc (loc->address), 0); | |
937 | if (*arg != 0) | |
938 | error (_("Junk at end of expression")); | |
939 | break; | |
940 | } | |
941 | catch (const gdb_exception_error &e) | |
942 | { | |
943 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
944 | be the last loc, abandon (if not forced) or continue |
945 | (if forced). */ | |
946 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
947 | throw; |
948 | } | |
4c55e970 TBA |
949 | } |
950 | ||
b5fa468f | 951 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 952 | int loc_num = 1; |
40cb8ca5 SM |
953 | for (bp_location *loc : b->locations ()) |
954 | { | |
955 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
956 | loc_num++; | |
957 | } | |
adc36818 | 958 | } |
1e620590 TBA |
959 | |
960 | /* We know that the new condition parsed successfully. The | |
961 | condition string of the breakpoint can be safely updated. */ | |
962 | xfree (b->cond_string); | |
963 | b->cond_string = xstrdup (exp); | |
964 | b->condition_not_parsed = 0; | |
adc36818 | 965 | } |
b775012e LM |
966 | mark_breakpoint_modified (b); |
967 | ||
76727919 | 968 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
969 | } |
970 | ||
79aabb73 TBA |
971 | /* See breakpoint.h. */ |
972 | ||
973 | void | |
974 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
975 | bool force) | |
976 | { | |
43892fdf | 977 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
978 | if (b->number == bpnum) |
979 | { | |
980 | /* Check if this breakpoint has a "stop" method implemented in an | |
981 | extension language. This method and conditions entered into GDB | |
982 | from the CLI are mutually exclusive. */ | |
983 | const struct extension_language_defn *extlang | |
984 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
985 | ||
986 | if (extlang != NULL) | |
987 | { | |
988 | error (_("Only one stop condition allowed. There is currently" | |
989 | " a %s stop condition defined for this breakpoint."), | |
990 | ext_lang_capitalized_name (extlang)); | |
991 | } | |
992 | set_breakpoint_condition (b, exp, from_tty, force); | |
993 | ||
994 | if (is_breakpoint (b)) | |
995 | update_global_location_list (UGLL_MAY_INSERT); | |
996 | ||
997 | return; | |
998 | } | |
999 | ||
1000 | error (_("No breakpoint number %d."), bpnum); | |
1001 | } | |
1002 | ||
b1d4d8d1 TBA |
1003 | /* The options for the "condition" command. */ |
1004 | ||
1005 | struct condition_command_opts | |
1006 | { | |
1007 | /* For "-force". */ | |
1008 | bool force_condition = false; | |
1009 | }; | |
1010 | ||
1011 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1012 | ||
1013 | gdb::option::flag_option_def<condition_command_opts> { | |
1014 | "force", | |
1015 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1016 | N_("Set the condition even if it is invalid for all current locations."), | |
1017 | }, | |
1018 | ||
1019 | }; | |
1020 | ||
1021 | /* Create an option_def_group for the "condition" options, with | |
1022 | CC_OPTS as context. */ | |
1023 | ||
1024 | static inline gdb::option::option_def_group | |
1025 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1026 | { | |
1027 | return {{condition_command_option_defs}, cc_opts}; | |
1028 | } | |
1029 | ||
d55637df TT |
1030 | /* Completion for the "condition" command. */ |
1031 | ||
eb3ff9a5 | 1032 | static void |
6f937416 | 1033 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1034 | completion_tracker &tracker, |
b1d4d8d1 | 1035 | const char *text, const char * /*word*/) |
d55637df | 1036 | { |
b1d4d8d1 TBA |
1037 | bool has_no_arguments = (*text == '\0'); |
1038 | condition_command_opts cc_opts; | |
1039 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1040 | if (gdb::option::complete_options | |
1041 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1042 | return; | |
d55637df | 1043 | |
f1735a53 | 1044 | text = skip_spaces (text); |
b1d4d8d1 | 1045 | const char *space = skip_to_space (text); |
d55637df TT |
1046 | if (*space == '\0') |
1047 | { | |
1048 | int len; | |
d55637df TT |
1049 | |
1050 | if (text[0] == '$') | |
1051 | { | |
b1d4d8d1 | 1052 | tracker.advance_custom_word_point_by (1); |
d55637df | 1053 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1054 | if (!isdigit (text[1])) |
1055 | complete_internalvar (tracker, &text[1]); | |
1056 | return; | |
d55637df TT |
1057 | } |
1058 | ||
b1d4d8d1 TBA |
1059 | /* Suggest the "-force" flag if no arguments are given. If |
1060 | arguments were passed, they either already include the flag, | |
1061 | or we are beyond the point of suggesting it because it's | |
1062 | positionally the first argument. */ | |
1063 | if (has_no_arguments) | |
1064 | gdb::option::complete_on_all_options (tracker, group); | |
1065 | ||
d55637df TT |
1066 | /* We're completing the breakpoint number. */ |
1067 | len = strlen (text); | |
1068 | ||
43892fdf | 1069 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1070 | { |
1071 | char number[50]; | |
1072 | ||
1073 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1074 | ||
1075 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1076 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1077 | } |
d55637df | 1078 | |
eb3ff9a5 | 1079 | return; |
d55637df TT |
1080 | } |
1081 | ||
b1d4d8d1 TBA |
1082 | /* We're completing the expression part. Skip the breakpoint num. */ |
1083 | const char *exp_start = skip_spaces (space); | |
1084 | tracker.advance_custom_word_point_by (exp_start - text); | |
1085 | text = exp_start; | |
1086 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1087 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1088 | } |
1089 | ||
c906108c SS |
1090 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1091 | ||
1092 | static void | |
0b39b52e | 1093 | condition_command (const char *arg, int from_tty) |
c906108c | 1094 | { |
0b39b52e | 1095 | const char *p; |
52f0bd74 | 1096 | int bnum; |
c906108c SS |
1097 | |
1098 | if (arg == 0) | |
e2e0b3e5 | 1099 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1100 | |
1101 | p = arg; | |
733d554a TBA |
1102 | |
1103 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1104 | condition_command_opts cc_opts; |
1105 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1106 | gdb::option::process_options | |
1107 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1108 | |
c906108c | 1109 | bnum = get_number (&p); |
5c44784c | 1110 | if (bnum == 0) |
8a3fe4f8 | 1111 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1112 | |
79aabb73 | 1113 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1114 | } |
1115 | ||
a7bdde9e VP |
1116 | /* Check that COMMAND do not contain commands that are suitable |
1117 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1118 | Throw if any such commands is found. */ |
1119 | ||
a7bdde9e VP |
1120 | static void |
1121 | check_no_tracepoint_commands (struct command_line *commands) | |
1122 | { | |
1123 | struct command_line *c; | |
cc59ec59 | 1124 | |
a7bdde9e VP |
1125 | for (c = commands; c; c = c->next) |
1126 | { | |
a7bdde9e | 1127 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1128 | error (_("The 'while-stepping' command can " |
1129 | "only be used for tracepoints")); | |
a7bdde9e | 1130 | |
12973681 TT |
1131 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1132 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1133 | |
1134 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1135 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1136 | command directly. */ |
1137 | if (strstr (c->line, "collect ") == c->line) | |
1138 | error (_("The 'collect' command can only be used for tracepoints")); | |
1139 | ||
51661e93 VP |
1140 | if (strstr (c->line, "teval ") == c->line) |
1141 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1142 | } |
1143 | } | |
1144 | ||
c1fc2657 | 1145 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1146 | { |
c1fc2657 | 1147 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1148 | }; |
1149 | ||
d77f58be SS |
1150 | /* Encapsulate tests for different types of tracepoints. */ |
1151 | ||
3b0871f4 SM |
1152 | static bool |
1153 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1154 | { |
1155 | return (type == bp_tracepoint | |
1156 | || type == bp_fast_tracepoint | |
1157 | || type == bp_static_tracepoint); | |
1158 | } | |
1159 | ||
3b0871f4 SM |
1160 | static bool |
1161 | is_longjmp_type (bptype type) | |
1162 | { | |
1163 | return type == bp_longjmp || type == bp_exception; | |
1164 | } | |
1165 | ||
f2478a7e SM |
1166 | /* See breakpoint.h. */ |
1167 | ||
1168 | bool | |
d77f58be | 1169 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1170 | { |
d9b3f62e | 1171 | return is_tracepoint_type (b->type); |
a7bdde9e | 1172 | } |
d9b3f62e | 1173 | |
a5e364af SM |
1174 | /* Factory function to create an appropriate instance of breakpoint given |
1175 | TYPE. */ | |
1176 | ||
1177 | static std::unique_ptr<breakpoint> | |
1178 | new_breakpoint_from_type (bptype type) | |
1179 | { | |
1180 | breakpoint *b; | |
1181 | ||
1182 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1183 | b = new tracepoint (); |
3b0871f4 | 1184 | else if (is_longjmp_type (type)) |
c1fc2657 | 1185 | b = new longjmp_breakpoint (); |
a5e364af SM |
1186 | else |
1187 | b = new breakpoint (); | |
1188 | ||
1189 | return std::unique_ptr<breakpoint> (b); | |
1190 | } | |
1191 | ||
e5dd4106 | 1192 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1193 | breakpoint. This function will throw an exception if a problem is |
1194 | found. */ | |
48cb2d85 | 1195 | |
95a42b64 TT |
1196 | static void |
1197 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1198 | struct command_line *commands) | |
48cb2d85 | 1199 | { |
d77f58be | 1200 | if (is_tracepoint (b)) |
a7bdde9e | 1201 | { |
c9a6ce02 | 1202 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1203 | struct command_line *c; |
1204 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1205 | |
1206 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1207 | might have included a while-stepping action, while the new |
1208 | ones might not. */ | |
c9a6ce02 PA |
1209 | t->step_count = 0; |
1210 | ||
1211 | /* We need to verify that each top-level element of commands is | |
1212 | valid for tracepoints, that there's at most one | |
1213 | while-stepping element, and that the while-stepping's body | |
1214 | has valid tracing commands excluding nested while-stepping. | |
1215 | We also need to validate the tracepoint action line in the | |
1216 | context of the tracepoint --- validate_actionline actually | |
1217 | has side effects, like setting the tracepoint's | |
1218 | while-stepping STEP_COUNT, in addition to checking if the | |
1219 | collect/teval actions parse and make sense in the | |
1220 | tracepoint's context. */ | |
a7bdde9e VP |
1221 | for (c = commands; c; c = c->next) |
1222 | { | |
a7bdde9e VP |
1223 | if (c->control_type == while_stepping_control) |
1224 | { | |
1225 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1226 | error (_("The 'while-stepping' command " |
1227 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1228 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1229 | error (_("The 'while-stepping' command " |
1230 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1231 | |
1232 | if (while_stepping) | |
3e43a32a MS |
1233 | error (_("The 'while-stepping' command " |
1234 | "can be used only once")); | |
a7bdde9e VP |
1235 | else |
1236 | while_stepping = c; | |
1237 | } | |
c9a6ce02 PA |
1238 | |
1239 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1240 | } |
1241 | if (while_stepping) | |
1242 | { | |
1243 | struct command_line *c2; | |
1244 | ||
12973681 TT |
1245 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1246 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1247 | for (; c2; c2 = c2->next) |
1248 | { | |
a7bdde9e VP |
1249 | if (c2->control_type == while_stepping_control) |
1250 | error (_("The 'while-stepping' command cannot be nested")); | |
1251 | } | |
1252 | } | |
1253 | } | |
1254 | else | |
1255 | { | |
1256 | check_no_tracepoint_commands (commands); | |
1257 | } | |
95a42b64 TT |
1258 | } |
1259 | ||
0fb4aa4b PA |
1260 | /* Return a vector of all the static tracepoints set at ADDR. The |
1261 | caller is responsible for releasing the vector. */ | |
1262 | ||
f51e0e20 | 1263 | std::vector<breakpoint *> |
0fb4aa4b PA |
1264 | static_tracepoints_here (CORE_ADDR addr) |
1265 | { | |
f51e0e20 | 1266 | std::vector<breakpoint *> found; |
0fb4aa4b | 1267 | |
43892fdf | 1268 | for (breakpoint *b : all_breakpoints ()) |
0fb4aa4b PA |
1269 | if (b->type == bp_static_tracepoint) |
1270 | { | |
40cb8ca5 | 1271 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1272 | if (loc->address == addr) |
f51e0e20 | 1273 | found.push_back (b); |
0fb4aa4b PA |
1274 | } |
1275 | ||
1276 | return found; | |
1277 | } | |
1278 | ||
95a42b64 | 1279 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1280 | validate that only allowed commands are included. */ |
95a42b64 TT |
1281 | |
1282 | void | |
4a64f543 | 1283 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1284 | counted_command_line &&commands) |
95a42b64 | 1285 | { |
93921405 | 1286 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1287 | |
d1b0a7bf | 1288 | b->commands = std::move (commands); |
76727919 | 1289 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1290 | } |
1291 | ||
45a43567 TT |
1292 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1293 | is not the same as the "silent" that may appear in the breakpoint's | |
1294 | commands. */ | |
1295 | ||
1296 | void | |
1297 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1298 | { | |
1299 | int old_silent = b->silent; | |
1300 | ||
1301 | b->silent = silent; | |
1302 | if (old_silent != silent) | |
76727919 | 1303 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1304 | } |
1305 | ||
1306 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1307 | breakpoint work for any thread. */ | |
1308 | ||
1309 | void | |
1310 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1311 | { | |
1312 | int old_thread = b->thread; | |
1313 | ||
1314 | b->thread = thread; | |
1315 | if (old_thread != thread) | |
76727919 | 1316 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1317 | } |
1318 | ||
1319 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1320 | breakpoint work for any task. */ | |
1321 | ||
1322 | void | |
1323 | breakpoint_set_task (struct breakpoint *b, int task) | |
1324 | { | |
1325 | int old_task = b->task; | |
1326 | ||
1327 | b->task = task; | |
1328 | if (old_task != task) | |
76727919 | 1329 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1330 | } |
1331 | ||
95a42b64 | 1332 | static void |
896b6bda | 1333 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1334 | struct command_line *control) |
95a42b64 | 1335 | { |
d1b0a7bf | 1336 | counted_command_line cmd; |
999700cd PW |
1337 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1338 | NULL after the call to read_command_lines if the user provides an empty | |
1339 | list of command by just typing "end". */ | |
1340 | bool cmd_read = false; | |
95a42b64 | 1341 | |
896b6bda PA |
1342 | std::string new_arg; |
1343 | ||
95a42b64 TT |
1344 | if (arg == NULL || !*arg) |
1345 | { | |
da1df1db | 1346 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1347 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1348 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1349 | breakpoint_count); | |
95a42b64 | 1350 | else if (breakpoint_count > 0) |
896b6bda | 1351 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1352 | } |
da1df1db TBA |
1353 | else |
1354 | { | |
1355 | /* Create a copy of ARG. This is needed because the "commands" | |
1356 | command may be coming from a script. In that case, the read | |
1357 | line buffer is going to be overwritten in the lambda of | |
1358 | 'map_breakpoint_numbers' below when reading the next line | |
1359 | before we are are done parsing the breakpoint numbers. */ | |
1360 | new_arg = arg; | |
1361 | } | |
1362 | arg = new_arg.c_str (); | |
48649e1b TT |
1363 | |
1364 | map_breakpoint_numbers | |
1365 | (arg, [&] (breakpoint *b) | |
1366 | { | |
999700cd | 1367 | if (!cmd_read) |
48649e1b | 1368 | { |
999700cd | 1369 | gdb_assert (cmd == NULL); |
48649e1b | 1370 | if (control != NULL) |
12973681 | 1371 | cmd = control->body_list_0; |
48649e1b TT |
1372 | else |
1373 | { | |
81b1e71c TT |
1374 | std::string str |
1375 | = string_printf (_("Type commands for breakpoint(s) " | |
1376 | "%s, one per line."), | |
1377 | arg); | |
48649e1b | 1378 | |
60b3cef2 TT |
1379 | auto do_validate = [=] (const char *line) |
1380 | { | |
1381 | validate_actionline (line, b); | |
1382 | }; | |
1383 | gdb::function_view<void (const char *)> validator; | |
1384 | if (is_tracepoint (b)) | |
1385 | validator = do_validate; | |
1386 | ||
1387 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1388 | } |
999700cd | 1389 | cmd_read = true; |
48649e1b TT |
1390 | } |
1391 | ||
1392 | /* If a breakpoint was on the list more than once, we don't need to | |
1393 | do anything. */ | |
1394 | if (b->commands != cmd) | |
1395 | { | |
d1b0a7bf | 1396 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1397 | b->commands = cmd; |
76727919 | 1398 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1399 | } |
1400 | }); | |
95a42b64 TT |
1401 | } |
1402 | ||
1403 | static void | |
0b39b52e | 1404 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1405 | { |
1406 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1407 | } |
40c03ae8 EZ |
1408 | |
1409 | /* Like commands_command, but instead of reading the commands from | |
1410 | input stream, takes them from an already parsed command structure. | |
1411 | ||
1412 | This is used by cli-script.c to DTRT with breakpoint commands | |
1413 | that are part of if and while bodies. */ | |
1414 | enum command_control_type | |
896b6bda | 1415 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1416 | { |
95a42b64 TT |
1417 | commands_command_1 (arg, 0, cmd); |
1418 | return simple_control; | |
40c03ae8 | 1419 | } |
876fa593 JK |
1420 | |
1421 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1422 | ||
1423 | static int | |
1424 | bp_location_has_shadow (struct bp_location *bl) | |
1425 | { | |
1426 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1427 | return 0; | |
1428 | if (!bl->inserted) | |
1429 | return 0; | |
1430 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1431 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1432 | return 0; |
1433 | return 1; | |
1434 | } | |
1435 | ||
9d497a19 PA |
1436 | /* Update BUF, which is LEN bytes read from the target address |
1437 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1438 | contents. | |
1439 | ||
1440 | If READBUF is not NULL, this buffer must not overlap with the of | |
1441 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1442 | failed assertion internal error will be raised. */ | |
1443 | ||
1444 | static void | |
1445 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1446 | const gdb_byte *writebuf_org, | |
1447 | ULONGEST memaddr, LONGEST len, | |
1448 | struct bp_target_info *target_info, | |
1449 | struct gdbarch *gdbarch) | |
1450 | { | |
1451 | /* Now do full processing of the found relevant range of elements. */ | |
1452 | CORE_ADDR bp_addr = 0; | |
1453 | int bp_size = 0; | |
1454 | int bptoffset = 0; | |
1455 | ||
1456 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1457 | current_program_space->aspace, 0)) | |
1458 | { | |
1459 | /* The breakpoint is inserted in a different address space. */ | |
1460 | return; | |
1461 | } | |
1462 | ||
1463 | /* Addresses and length of the part of the breakpoint that | |
1464 | we need to copy. */ | |
1465 | bp_addr = target_info->placed_address; | |
1466 | bp_size = target_info->shadow_len; | |
1467 | ||
1468 | if (bp_addr + bp_size <= memaddr) | |
1469 | { | |
1470 | /* The breakpoint is entirely before the chunk of memory we are | |
1471 | reading. */ | |
1472 | return; | |
1473 | } | |
1474 | ||
1475 | if (bp_addr >= memaddr + len) | |
1476 | { | |
1477 | /* The breakpoint is entirely after the chunk of memory we are | |
1478 | reading. */ | |
1479 | return; | |
1480 | } | |
1481 | ||
1482 | /* Offset within shadow_contents. */ | |
1483 | if (bp_addr < memaddr) | |
1484 | { | |
1485 | /* Only copy the second part of the breakpoint. */ | |
1486 | bp_size -= memaddr - bp_addr; | |
1487 | bptoffset = memaddr - bp_addr; | |
1488 | bp_addr = memaddr; | |
1489 | } | |
1490 | ||
1491 | if (bp_addr + bp_size > memaddr + len) | |
1492 | { | |
1493 | /* Only copy the first part of the breakpoint. */ | |
1494 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1495 | } | |
1496 | ||
1497 | if (readbuf != NULL) | |
1498 | { | |
1499 | /* Verify that the readbuf buffer does not overlap with the | |
1500 | shadow_contents buffer. */ | |
1501 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1502 | || readbuf >= (target_info->shadow_contents | |
1503 | + target_info->shadow_len)); | |
1504 | ||
1505 | /* Update the read buffer with this inserted breakpoint's | |
1506 | shadow. */ | |
1507 | memcpy (readbuf + bp_addr - memaddr, | |
1508 | target_info->shadow_contents + bptoffset, bp_size); | |
1509 | } | |
1510 | else | |
1511 | { | |
1512 | const unsigned char *bp; | |
0d5ed153 MR |
1513 | CORE_ADDR addr = target_info->reqstd_address; |
1514 | int placed_size; | |
9d497a19 PA |
1515 | |
1516 | /* Update the shadow with what we want to write to memory. */ | |
1517 | memcpy (target_info->shadow_contents + bptoffset, | |
1518 | writebuf_org + bp_addr - memaddr, bp_size); | |
1519 | ||
1520 | /* Determine appropriate breakpoint contents and size for this | |
1521 | address. */ | |
0d5ed153 | 1522 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1523 | |
1524 | /* Update the final write buffer with this inserted | |
1525 | breakpoint's INSN. */ | |
1526 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1527 | } | |
1528 | } | |
1529 | ||
8defab1a | 1530 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1531 | by replacing any memory breakpoints with their shadowed contents. |
1532 | ||
35c63cd8 JB |
1533 | If READBUF is not NULL, this buffer must not overlap with any of |
1534 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1535 | a failed assertion internal error will be raised. | |
1536 | ||
876fa593 | 1537 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1538 | bl->address - bp_locations_placed_address_before_address_max |
1539 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1540 | The range we were requested to resolve shadows for is: |
1541 | memaddr ... memaddr + len | |
1542 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1543 | memaddr + len <= (bl->address |
f5336ca5 | 1544 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1545 | and: |
f5336ca5 | 1546 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1547 | |
8defab1a | 1548 | void |
f0ba3972 PA |
1549 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1550 | const gdb_byte *writebuf_org, | |
1551 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1552 | { |
4a64f543 MS |
1553 | /* Left boundary, right boundary and median element of our binary |
1554 | search. */ | |
876fa593 JK |
1555 | unsigned bc_l, bc_r, bc; |
1556 | ||
4a64f543 MS |
1557 | /* Find BC_L which is a leftmost element which may affect BUF |
1558 | content. It is safe to report lower value but a failure to | |
1559 | report higher one. */ | |
876fa593 JK |
1560 | |
1561 | bc_l = 0; | |
5d51cd5d | 1562 | bc_r = bp_locations.size (); |
876fa593 JK |
1563 | while (bc_l + 1 < bc_r) |
1564 | { | |
35df4500 | 1565 | struct bp_location *bl; |
876fa593 JK |
1566 | |
1567 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1568 | bl = bp_locations[bc]; |
876fa593 | 1569 | |
4a64f543 MS |
1570 | /* Check first BL->ADDRESS will not overflow due to the added |
1571 | constant. Then advance the left boundary only if we are sure | |
1572 | the BC element can in no way affect the BUF content (MEMADDR | |
1573 | to MEMADDR + LEN range). | |
876fa593 | 1574 | |
f5336ca5 | 1575 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1576 | offset so that we cannot miss a breakpoint with its shadow |
1577 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1578 | |
f5336ca5 | 1579 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1580 | >= bl->address) |
f5336ca5 | 1581 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1582 | <= memaddr)) |
876fa593 JK |
1583 | bc_l = bc; |
1584 | else | |
1585 | bc_r = bc; | |
1586 | } | |
1587 | ||
128070bb PA |
1588 | /* Due to the binary search above, we need to make sure we pick the |
1589 | first location that's at BC_L's address. E.g., if there are | |
1590 | multiple locations at the same address, BC_L may end up pointing | |
1591 | at a duplicate location, and miss the "master"/"inserted" | |
1592 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1593 | B: | |
1594 | ||
1595 | L1@A, L2@A, L3@B, ... | |
1596 | ||
1597 | BC_L could end up pointing at location L2, while the "master" | |
1598 | location could be L1. Since the `loc->inserted' flag is only set | |
1599 | on "master" locations, we'd forget to restore the shadow of L1 | |
1600 | and L2. */ | |
1601 | while (bc_l > 0 | |
f5336ca5 | 1602 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1603 | bc_l--; |
1604 | ||
876fa593 JK |
1605 | /* Now do full processing of the found relevant range of elements. */ |
1606 | ||
5d51cd5d | 1607 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1608 | { |
1609 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1610 | |
01add95b SM |
1611 | /* bp_location array has BL->OWNER always non-NULL. */ |
1612 | if (bl->owner->type == bp_none) | |
1613 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1614 | bl->owner->number); | |
ffce0d52 | 1615 | |
01add95b SM |
1616 | /* Performance optimization: any further element can no longer affect BUF |
1617 | content. */ | |
876fa593 | 1618 | |
01add95b SM |
1619 | if (bl->address >= bp_locations_placed_address_before_address_max |
1620 | && (memaddr + len | |
1621 | <= (bl->address | |
1622 | - bp_locations_placed_address_before_address_max))) | |
1623 | break; | |
876fa593 | 1624 | |
01add95b SM |
1625 | if (!bp_location_has_shadow (bl)) |
1626 | continue; | |
6c95b8df | 1627 | |
01add95b SM |
1628 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1629 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1630 | } | |
c906108c | 1631 | } |
9d497a19 | 1632 | |
f2478a7e | 1633 | /* See breakpoint.h. */ |
b775012e | 1634 | |
f2478a7e | 1635 | bool |
b775012e LM |
1636 | is_breakpoint (const struct breakpoint *bpt) |
1637 | { | |
1638 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1639 | || bpt->type == bp_hardware_breakpoint |
1640 | || bpt->type == bp_dprintf); | |
b775012e LM |
1641 | } |
1642 | ||
60e1c644 PA |
1643 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1644 | ||
f2478a7e | 1645 | static bool |
d77f58be | 1646 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1647 | { |
1648 | return (bpt->type == bp_hardware_watchpoint | |
1649 | || bpt->type == bp_read_watchpoint | |
1650 | || bpt->type == bp_access_watchpoint); | |
1651 | } | |
7270d8f2 | 1652 | |
f2478a7e | 1653 | /* See breakpoint.h. */ |
60e1c644 | 1654 | |
f2478a7e | 1655 | bool |
d77f58be | 1656 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1657 | { |
1658 | return (is_hardware_watchpoint (bpt) | |
1659 | || bpt->type == bp_watchpoint); | |
1660 | } | |
1661 | ||
3a5c3e22 PA |
1662 | /* Returns true if the current thread and its running state are safe |
1663 | to evaluate or update watchpoint B. Watchpoints on local | |
1664 | expressions need to be evaluated in the context of the thread that | |
1665 | was current when the watchpoint was created, and, that thread needs | |
1666 | to be stopped to be able to select the correct frame context. | |
1667 | Watchpoints on global expressions can be evaluated on any thread, | |
1668 | and in any state. It is presently left to the target allowing | |
1669 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1670 | |
1671 | static int | |
3a5c3e22 | 1672 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1673 | { |
c1fc2657 | 1674 | return (b->pspace == current_program_space |
d7e15655 TT |
1675 | && (b->watchpoint_thread == null_ptid |
1676 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1677 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1678 | } |
1679 | ||
d0fb5eae JK |
1680 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1681 | associated bp_watchpoint_scope breakpoint. */ | |
1682 | ||
1683 | static void | |
3a5c3e22 | 1684 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1685 | { |
c1fc2657 | 1686 | if (w->related_breakpoint != w) |
d0fb5eae | 1687 | { |
c1fc2657 SM |
1688 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1689 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1690 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1691 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1692 | w->related_breakpoint = w; | |
d0fb5eae | 1693 | } |
c1fc2657 | 1694 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1695 | } |
1696 | ||
bb9d5f81 PP |
1697 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1698 | watchpoint W. */ | |
1699 | ||
1700 | static struct value * | |
1701 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1702 | { | |
1703 | struct value *bit_val; | |
1704 | ||
1705 | if (val == NULL) | |
1706 | return NULL; | |
1707 | ||
1708 | bit_val = allocate_value (value_type (val)); | |
1709 | ||
1710 | unpack_value_bitfield (bit_val, | |
1711 | w->val_bitpos, | |
1712 | w->val_bitsize, | |
1713 | value_contents_for_printing (val), | |
1714 | value_offset (val), | |
1715 | val); | |
1716 | ||
1717 | return bit_val; | |
1718 | } | |
1719 | ||
c6d81124 PA |
1720 | /* Allocate a dummy location and add it to B, which must be a software |
1721 | watchpoint. This is required because even if a software watchpoint | |
1722 | is not watching any memory, bpstat_stop_status requires a location | |
1723 | to be able to report stops. */ | |
1724 | ||
1725 | static void | |
1726 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1727 | struct program_space *pspace) | |
1728 | { | |
1729 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1730 | ||
1731 | b->loc = allocate_bp_location (b); | |
1732 | b->loc->pspace = pspace; | |
1733 | b->loc->address = -1; | |
1734 | b->loc->length = -1; | |
1735 | } | |
1736 | ||
1737 | /* Returns true if B is a software watchpoint that is not watching any | |
1738 | memory (e.g., "watch $pc"). */ | |
1739 | ||
f2478a7e | 1740 | static bool |
c6d81124 PA |
1741 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1742 | { | |
1743 | return (b->type == bp_watchpoint | |
1744 | && b->loc != NULL | |
1745 | && b->loc->next == NULL | |
1746 | && b->loc->address == -1 | |
1747 | && b->loc->length == -1); | |
1748 | } | |
1749 | ||
567e1b4e JB |
1750 | /* Assuming that B is a watchpoint: |
1751 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1752 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1753 | - Evaluate the condition if there is one, and store the result |
1754 | in b->loc->cond. | |
a5606eee VP |
1755 | - Update the list of values that must be watched in B->loc. |
1756 | ||
4a64f543 MS |
1757 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1758 | nothing. If this is local watchpoint that is out of scope, delete | |
1759 | it. | |
1760 | ||
1761 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1762 | removed + inserted on each stop here. Normal breakpoints must | |
1763 | never be removed because they might be missed by a running thread | |
1764 | when debugging in non-stop mode. On the other hand, hardware | |
1765 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1766 | to each LWP since they are stored in each LWP's hardware debug | |
1767 | registers. Therefore, such LWP must be stopped first in order to | |
1768 | be able to modify its hardware watchpoints. | |
1769 | ||
1770 | Hardware watchpoints must be reset exactly once after being | |
1771 | presented to the user. It cannot be done sooner, because it would | |
1772 | reset the data used to present the watchpoint hit to the user. And | |
1773 | it must not be done later because it could display the same single | |
1774 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1775 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1776 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1777 | not user-visible - its hit is suppressed if the memory content has | |
1778 | not changed. | |
1779 | ||
1780 | The following constraints influence the location where we can reset | |
1781 | hardware watchpoints: | |
1782 | ||
1783 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1784 | called several times when GDB stops. | |
1785 | ||
1786 | [linux] | |
1787 | * Multiple hardware watchpoints can be hit at the same time, | |
1788 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1789 | hit at a time as the reason for stopping, and all the other hits | |
1790 | are presented later, one after the other, each time the user | |
1791 | requests the execution to be resumed. Execution is not resumed | |
1792 | for the threads still having pending hit event stored in | |
1793 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1794 | the inferior on the first stop the thread hit event is kept being | |
1795 | reported from its cached value by linux_nat_stopped_data_address | |
1796 | until the real thread resume happens after the watchpoint gets | |
1797 | presented and thus its LWP_INFO->STATUS gets reset. | |
1798 | ||
1799 | Therefore the hardware watchpoint hit can get safely reset on the | |
1800 | watchpoint removal from inferior. */ | |
a79d3c27 | 1801 | |
b40ce68a | 1802 | static void |
3a5c3e22 | 1803 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1804 | { |
a5606eee | 1805 | int within_current_scope; |
a5606eee | 1806 | struct frame_id saved_frame_id; |
66076460 | 1807 | int frame_saved; |
a5606eee | 1808 | |
f6bc2008 PA |
1809 | /* If this is a local watchpoint, we only want to check if the |
1810 | watchpoint frame is in scope if the current thread is the thread | |
1811 | that was used to create the watchpoint. */ | |
1812 | if (!watchpoint_in_thread_scope (b)) | |
1813 | return; | |
1814 | ||
c1fc2657 | 1815 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1816 | return; |
1817 | ||
66076460 | 1818 | frame_saved = 0; |
a5606eee VP |
1819 | |
1820 | /* Determine if the watchpoint is within scope. */ | |
1821 | if (b->exp_valid_block == NULL) | |
1822 | within_current_scope = 1; | |
1823 | else | |
1824 | { | |
b5db5dfc UW |
1825 | struct frame_info *fi = get_current_frame (); |
1826 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1827 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1828 | ||
c9cf6e20 MG |
1829 | /* If we're at a point where the stack has been destroyed |
1830 | (e.g. in a function epilogue), unwinding may not work | |
1831 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1832 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1833 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1834 | return; |
66076460 DJ |
1835 | |
1836 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1837 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1838 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1839 | took a frame parameter, so that we didn't have to change the |
1840 | selected frame. */ | |
66076460 DJ |
1841 | frame_saved = 1; |
1842 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1843 | ||
a5606eee VP |
1844 | fi = frame_find_by_id (b->watchpoint_frame); |
1845 | within_current_scope = (fi != NULL); | |
1846 | if (within_current_scope) | |
1847 | select_frame (fi); | |
1848 | } | |
1849 | ||
b5db5dfc UW |
1850 | /* We don't free locations. They are stored in the bp_location array |
1851 | and update_global_location_list will eventually delete them and | |
1852 | remove breakpoints if needed. */ | |
c1fc2657 | 1853 | b->loc = NULL; |
b5db5dfc | 1854 | |
a5606eee VP |
1855 | if (within_current_scope && reparse) |
1856 | { | |
bbc13ae3 | 1857 | const char *s; |
d63d0675 | 1858 | |
4d01a485 | 1859 | b->exp.reset (); |
d63d0675 | 1860 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1861 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1862 | /* If the meaning of expression itself changed, the old value is |
1863 | no longer relevant. We don't want to report a watchpoint hit | |
1864 | to the user when the old value and the new value may actually | |
1865 | be completely different objects. */ | |
fa4727a6 | 1866 | b->val = NULL; |
4c1d86d9 | 1867 | b->val_valid = false; |
60e1c644 PA |
1868 | |
1869 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1870 | expression is stored in the breakpoint object, not in the | |
1871 | locations (re)created below. */ | |
c1fc2657 | 1872 | if (b->cond_string != NULL) |
60e1c644 | 1873 | { |
4d01a485 | 1874 | b->cond_exp.reset (); |
60e1c644 | 1875 | |
c1fc2657 | 1876 | s = b->cond_string; |
1bb9788d | 1877 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1878 | } |
a5606eee | 1879 | } |
a5606eee VP |
1880 | |
1881 | /* If we failed to parse the expression, for example because | |
1882 | it refers to a global variable in a not-yet-loaded shared library, | |
1883 | don't try to insert watchpoint. We don't automatically delete | |
1884 | such watchpoint, though, since failure to parse expression | |
1885 | is different from out-of-scope watchpoint. */ | |
55f6301a | 1886 | if (!target_has_execution ()) |
2d134ed3 PA |
1887 | { |
1888 | /* Without execution, memory can't change. No use to try and | |
1889 | set watchpoint locations. The watchpoint will be reset when | |
1890 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1891 | if (!can_use_hw_watchpoints) |
1892 | { | |
c1fc2657 SM |
1893 | if (b->ops->works_in_software_mode (b)) |
1894 | b->type = bp_watchpoint; | |
e8369a73 | 1895 | else |
638aa5a1 AB |
1896 | error (_("Can't set read/access watchpoint when " |
1897 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1898 | } |
2d134ed3 PA |
1899 | } |
1900 | else if (within_current_scope && b->exp) | |
a5606eee | 1901 | { |
a6535de1 | 1902 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1903 | struct value *v, *result; |
2d134ed3 | 1904 | struct program_space *frame_pspace; |
a5606eee | 1905 | |
1eaebe02 | 1906 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 1907 | &val_chain, false); |
a5606eee | 1908 | |
a5606eee VP |
1909 | /* Avoid setting b->val if it's already set. The meaning of |
1910 | b->val is 'the last value' user saw, and we should update | |
1911 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1912 | happens, the code that reports it updates b->val directly. |
1913 | We don't keep track of the memory value for masked | |
1914 | watchpoints. */ | |
c1fc2657 | 1915 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1916 | { |
bb9d5f81 | 1917 | if (b->val_bitsize != 0) |
850645cf TT |
1918 | v = extract_bitfield_from_watchpoint_value (b, v); |
1919 | b->val = release_value (v); | |
4c1d86d9 | 1920 | b->val_valid = true; |
fa4727a6 | 1921 | } |
a5606eee | 1922 | |
2d134ed3 PA |
1923 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1924 | ||
a5606eee | 1925 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1926 | gdb_assert (!val_chain.empty ()); |
1927 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1928 | { |
a6535de1 TT |
1929 | v = iter.get (); |
1930 | ||
a5606eee VP |
1931 | /* If it's a memory location, and GDB actually needed |
1932 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1933 | must watch it. If the first value returned is |
1934 | still lazy, that means an error occurred reading it; | |
1935 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1936 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1937 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1938 | { |
1939 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1940 | |
a5606eee VP |
1941 | /* We only watch structs and arrays if user asked |
1942 | for it explicitly, never if they just happen to | |
1943 | appear in the middle of some value chain. */ | |
fa4727a6 | 1944 | if (v == result |
78134374 SM |
1945 | || (vtype->code () != TYPE_CODE_STRUCT |
1946 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
1947 | { |
1948 | CORE_ADDR addr; | |
f486487f | 1949 | enum target_hw_bp_type type; |
a5606eee | 1950 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1951 | int bitpos = 0, bitsize = 0; |
1952 | ||
1953 | if (value_bitsize (v) != 0) | |
1954 | { | |
1955 | /* Extract the bit parameters out from the bitfield | |
1956 | sub-expression. */ | |
1957 | bitpos = value_bitpos (v); | |
1958 | bitsize = value_bitsize (v); | |
1959 | } | |
1960 | else if (v == result && b->val_bitsize != 0) | |
1961 | { | |
1962 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1963 | lvalue whose bit parameters are saved in the fields | |
1964 | VAL_BITPOS and VAL_BITSIZE. */ | |
1965 | bitpos = b->val_bitpos; | |
1966 | bitsize = b->val_bitsize; | |
1967 | } | |
a5606eee | 1968 | |
42ae5230 | 1969 | addr = value_address (v); |
bb9d5f81 PP |
1970 | if (bitsize != 0) |
1971 | { | |
1972 | /* Skip the bytes that don't contain the bitfield. */ | |
1973 | addr += bitpos / 8; | |
1974 | } | |
1975 | ||
a5606eee | 1976 | type = hw_write; |
c1fc2657 | 1977 | if (b->type == bp_read_watchpoint) |
a5606eee | 1978 | type = hw_read; |
c1fc2657 | 1979 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1980 | type = hw_access; |
3a5c3e22 | 1981 | |
c1fc2657 SM |
1982 | loc = allocate_bp_location (b); |
1983 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1984 | ; |
1985 | *tmp = loc; | |
8ee511af | 1986 | loc->gdbarch = value_type (v)->arch (); |
6c95b8df PA |
1987 | |
1988 | loc->pspace = frame_pspace; | |
f17d9474 | 1989 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1990 | |
1991 | if (bitsize != 0) | |
1992 | { | |
1993 | /* Just cover the bytes that make up the bitfield. */ | |
1994 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1995 | } | |
1996 | else | |
1997 | loc->length = TYPE_LENGTH (value_type (v)); | |
1998 | ||
a5606eee VP |
1999 | loc->watchpoint_type = type; |
2000 | } | |
2001 | } | |
9fa40276 TJB |
2002 | } |
2003 | ||
2004 | /* Change the type of breakpoint between hardware assisted or | |
2005 | an ordinary watchpoint depending on the hardware support | |
2006 | and free hardware slots. REPARSE is set when the inferior | |
2007 | is started. */ | |
a9634178 | 2008 | if (reparse) |
9fa40276 | 2009 | { |
e09342b5 | 2010 | int reg_cnt; |
9fa40276 | 2011 | enum bp_loc_type loc_type; |
a5606eee | 2012 | |
a9634178 | 2013 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2014 | |
2015 | if (reg_cnt) | |
9fa40276 TJB |
2016 | { |
2017 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2018 | enum bptype type; |
9fa40276 | 2019 | |
a9634178 TJB |
2020 | /* Use an exact watchpoint when there's only one memory region to be |
2021 | watched, and only one debug register is needed to watch it. */ | |
2022 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2023 | ||
9fa40276 | 2024 | /* We need to determine how many resources are already |
e09342b5 TJB |
2025 | used for all other hardware watchpoints plus this one |
2026 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2027 | this watchpoint in as well. */ |
2028 | ||
2029 | /* If this is a software watchpoint, we try to turn it | |
2030 | to a hardware one -- count resources as if B was of | |
2031 | hardware watchpoint type. */ | |
c1fc2657 | 2032 | type = b->type; |
a1398e0c PA |
2033 | if (type == bp_watchpoint) |
2034 | type = bp_hardware_watchpoint; | |
2035 | ||
2036 | /* This watchpoint may or may not have been placed on | |
2037 | the list yet at this point (it won't be in the list | |
2038 | if we're trying to create it for the first time, | |
2039 | through watch_command), so always account for it | |
2040 | manually. */ | |
2041 | ||
2042 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2043 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2044 | |
2045 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2046 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2047 | |
2048 | target_resources_ok | |
2049 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2050 | if (target_resources_ok <= 0) |
a9634178 | 2051 | { |
c1fc2657 | 2052 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
2053 | |
2054 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2055 | error (_("Target does not support this type of " |
2056 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2057 | else if (target_resources_ok < 0 && !sw_mode) |
2058 | error (_("There are not enough available hardware " | |
2059 | "resources for this watchpoint.")); | |
a1398e0c PA |
2060 | |
2061 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2062 | b->type = bp_watchpoint; |
a1398e0c PA |
2063 | } |
2064 | else | |
2065 | { | |
2066 | /* If this was a software watchpoint, we've just | |
2067 | found we have enough resources to turn it to a | |
2068 | hardware watchpoint. Otherwise, this is a | |
2069 | nop. */ | |
c1fc2657 | 2070 | b->type = type; |
a9634178 | 2071 | } |
9fa40276 | 2072 | } |
c1fc2657 | 2073 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
2074 | { |
2075 | if (!can_use_hw_watchpoints) | |
2076 | error (_("Can't set read/access watchpoint when " | |
2077 | "hardware watchpoints are disabled.")); | |
2078 | else | |
2079 | error (_("Expression cannot be implemented with " | |
2080 | "read/access watchpoint.")); | |
2081 | } | |
9fa40276 | 2082 | else |
c1fc2657 | 2083 | b->type = bp_watchpoint; |
9fa40276 | 2084 | |
c1fc2657 | 2085 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2086 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2087 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2088 | bl->loc_type = loc_type; |
2089 | } | |
2090 | ||
c7437ca6 PA |
2091 | /* If a software watchpoint is not watching any memory, then the |
2092 | above left it without any location set up. But, | |
2093 | bpstat_stop_status requires a location to be able to report | |
2094 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2095 | if (b->type == bp_watchpoint && b->loc == NULL) |
2096 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2097 | } |
2098 | else if (!within_current_scope) | |
7270d8f2 | 2099 | { |
ac74f770 MS |
2100 | printf_filtered (_("\ |
2101 | Watchpoint %d deleted because the program has left the block\n\ | |
2102 | in which its expression is valid.\n"), | |
c1fc2657 | 2103 | b->number); |
d0fb5eae | 2104 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2105 | } |
a5606eee VP |
2106 | |
2107 | /* Restore the selected frame. */ | |
66076460 DJ |
2108 | if (frame_saved) |
2109 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2110 | } |
2111 | ||
a5606eee | 2112 | |
74960c60 | 2113 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2114 | inserted in the inferior. We don't differentiate the type of BL's owner |
2115 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2116 | breakpoint_ops is not defined, because in insert_bp_location, | |
2117 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2118 | static int |
35df4500 | 2119 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2120 | { |
35df4500 | 2121 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2122 | return 0; |
2123 | ||
35df4500 | 2124 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2125 | return 0; |
2126 | ||
b5fa468f TBA |
2127 | if (!bl->enabled || bl->disabled_by_cond |
2128 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2129 | return 0; |
2130 | ||
f8eba3c6 TT |
2131 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2132 | return 0; | |
2133 | ||
56710373 PA |
2134 | /* This is set for example, when we're attached to the parent of a |
2135 | vfork, and have detached from the child. The child is running | |
2136 | free, and we expect it to do an exec or exit, at which point the | |
2137 | OS makes the parent schedulable again (and the target reports | |
2138 | that the vfork is done). Until the child is done with the shared | |
2139 | memory region, do not insert breakpoints in the parent, otherwise | |
2140 | the child could still trip on the parent's breakpoints. Since | |
2141 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2142 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2143 | return 0; |
2144 | ||
31e77af2 | 2145 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2146 | location, except if the breakpoint is a single-step breakpoint, |
2147 | and the breakpoint's thread is the thread which is stepping past | |
2148 | a breakpoint. */ | |
31e77af2 PA |
2149 | if ((bl->loc_type == bp_loc_software_breakpoint |
2150 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2151 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2152 | bl->address) |
2153 | /* The single-step breakpoint may be inserted at the location | |
2154 | we're trying to step if the instruction branches to itself. | |
2155 | However, the instruction won't be executed at all and it may | |
2156 | break the semantics of the instruction, for example, the | |
2157 | instruction is a conditional branch or updates some flags. | |
2158 | We can't fix it unless GDB is able to emulate the instruction | |
2159 | or switch to displaced stepping. */ | |
2160 | && !(bl->owner->type == bp_single_step | |
2161 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2162 | { |
1eb8556f SM |
2163 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2164 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2165 | return 0; |
2166 | } | |
31e77af2 | 2167 | |
963f9c80 PA |
2168 | /* Don't insert watchpoints if we're trying to step past the |
2169 | instruction that triggered one. */ | |
2170 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2171 | && stepping_past_nonsteppable_watchpoint ()) | |
2172 | { | |
1eb8556f | 2173 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2174 | "skipping watchpoint at %s:%d", |
1eb8556f | 2175 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2176 | return 0; |
2177 | } | |
2178 | ||
74960c60 VP |
2179 | return 1; |
2180 | } | |
2181 | ||
934709f0 PW |
2182 | /* Same as should_be_inserted but does the check assuming |
2183 | that the location is not duplicated. */ | |
2184 | ||
2185 | static int | |
2186 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2187 | { | |
2188 | int result; | |
2189 | const int save_duplicate = bl->duplicate; | |
2190 | ||
2191 | bl->duplicate = 0; | |
2192 | result = should_be_inserted (bl); | |
2193 | bl->duplicate = save_duplicate; | |
2194 | return result; | |
2195 | } | |
2196 | ||
b775012e LM |
2197 | /* Parses a conditional described by an expression COND into an |
2198 | agent expression bytecode suitable for evaluation | |
2199 | by the bytecode interpreter. Return NULL if there was | |
2200 | any error during parsing. */ | |
2201 | ||
833177a4 | 2202 | static agent_expr_up |
b775012e LM |
2203 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2204 | { | |
833177a4 | 2205 | if (cond == NULL) |
b775012e LM |
2206 | return NULL; |
2207 | ||
833177a4 PA |
2208 | agent_expr_up aexpr; |
2209 | ||
b775012e LM |
2210 | /* We don't want to stop processing, so catch any errors |
2211 | that may show up. */ | |
a70b8144 | 2212 | try |
b775012e | 2213 | { |
036e657b | 2214 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2215 | } |
2216 | ||
230d2906 | 2217 | catch (const gdb_exception_error &ex) |
b775012e LM |
2218 | { |
2219 | /* If we got here, it means the condition could not be parsed to a valid | |
2220 | bytecode expression and thus can't be evaluated on the target's side. | |
2221 | It's no use iterating through the conditions. */ | |
b775012e LM |
2222 | } |
2223 | ||
2224 | /* We have a valid agent expression. */ | |
2225 | return aexpr; | |
2226 | } | |
2227 | ||
2228 | /* Based on location BL, create a list of breakpoint conditions to be | |
2229 | passed on to the target. If we have duplicated locations with different | |
2230 | conditions, we will add such conditions to the list. The idea is that the | |
2231 | target will evaluate the list of conditions and will only notify GDB when | |
2232 | one of them is true. */ | |
2233 | ||
2234 | static void | |
2235 | build_target_condition_list (struct bp_location *bl) | |
2236 | { | |
b775012e LM |
2237 | int null_condition_or_parse_error = 0; |
2238 | int modified = bl->needs_update; | |
b775012e | 2239 | |
8b4f3082 | 2240 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2241 | bl->target_info.conditions.clear (); |
8b4f3082 | 2242 | |
b775012e LM |
2243 | /* This is only meaningful if the target is |
2244 | evaluating conditions and if the user has | |
2245 | opted for condition evaluation on the target's | |
2246 | side. */ | |
2247 | if (gdb_evaluates_breakpoint_condition_p () | |
2248 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2249 | return; | |
2250 | ||
e0d9a270 SM |
2251 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2252 | ||
b775012e | 2253 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2254 | conditions or conditions that fail to parse to a valid agent |
2255 | expression bytecode. If any of these happen, then it's no use to | |
2256 | send conditions to the target since this location will always | |
2257 | trigger and generate a response back to GDB. Note we consider | |
2258 | all locations at the same address irrespective of type, i.e., | |
2259 | even if the locations aren't considered duplicates (e.g., | |
2260 | software breakpoint and hardware breakpoint at the same | |
2261 | address). */ | |
e0d9a270 | 2262 | for (bp_location *loc : loc_range) |
b775012e | 2263 | { |
b775012e LM |
2264 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2265 | { | |
2266 | if (modified) | |
2267 | { | |
b775012e LM |
2268 | /* Re-parse the conditions since something changed. In that |
2269 | case we already freed the condition bytecodes (see | |
2270 | force_breakpoint_reinsertion). We just | |
2271 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2272 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2273 | loc->cond.get ()); | |
b775012e LM |
2274 | } |
2275 | ||
2276 | /* If we have a NULL bytecode expression, it means something | |
2277 | went wrong or we have a null condition expression. */ | |
2278 | if (!loc->cond_bytecode) | |
2279 | { | |
2280 | null_condition_or_parse_error = 1; | |
2281 | break; | |
2282 | } | |
2283 | } | |
2284 | } | |
2285 | ||
2286 | /* If any of these happened, it means we will have to evaluate the conditions | |
2287 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2288 | for all the other duplicate locations, thus we free all of them here. | |
2289 | ||
2290 | This is so we have a finer control over which locations' conditions are | |
2291 | being evaluated by GDB or the remote stub. */ | |
2292 | if (null_condition_or_parse_error) | |
2293 | { | |
e0d9a270 | 2294 | for (bp_location *loc : loc_range) |
b775012e | 2295 | { |
b775012e LM |
2296 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2297 | { | |
2298 | /* Only go as far as the first NULL bytecode is | |
2299 | located. */ | |
2300 | if (!loc->cond_bytecode) | |
2301 | return; | |
2302 | ||
833177a4 | 2303 | loc->cond_bytecode.reset (); |
b775012e LM |
2304 | } |
2305 | } | |
2306 | } | |
2307 | ||
7f32a4d5 PA |
2308 | /* No NULL conditions or failed bytecode generation. Build a |
2309 | condition list for this location's address. If we have software | |
2310 | and hardware locations at the same address, they aren't | |
2311 | considered duplicates, but we still marge all the conditions | |
2312 | anyway, as it's simpler, and doesn't really make a practical | |
2313 | difference. */ | |
e0d9a270 SM |
2314 | for (bp_location *loc : loc_range) |
2315 | if (loc->cond | |
2316 | && is_breakpoint (loc->owner) | |
2317 | && loc->pspace->num == bl->pspace->num | |
2318 | && loc->owner->enable_state == bp_enabled | |
2319 | && loc->enabled | |
2320 | && !loc->disabled_by_cond) | |
2321 | { | |
2322 | /* Add the condition to the vector. This will be used later | |
2323 | to send the conditions to the target. */ | |
2324 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2325 | } | |
b775012e LM |
2326 | |
2327 | return; | |
2328 | } | |
2329 | ||
d3ce09f5 SS |
2330 | /* Parses a command described by string CMD into an agent expression |
2331 | bytecode suitable for evaluation by the bytecode interpreter. | |
2332 | Return NULL if there was any error during parsing. */ | |
2333 | ||
833177a4 | 2334 | static agent_expr_up |
d3ce09f5 SS |
2335 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2336 | { | |
bbc13ae3 KS |
2337 | const char *cmdrest; |
2338 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2339 | struct gdbarch *gdbarch = get_current_arch (); |
2340 | ||
833177a4 | 2341 | if (cmd == NULL) |
d3ce09f5 SS |
2342 | return NULL; |
2343 | ||
2344 | cmdrest = cmd; | |
2345 | ||
2346 | if (*cmdrest == ',') | |
2347 | ++cmdrest; | |
f1735a53 | 2348 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2349 | |
2350 | if (*cmdrest++ != '"') | |
2351 | error (_("No format string following the location")); | |
2352 | ||
2353 | format_start = cmdrest; | |
2354 | ||
8e481c3b | 2355 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2356 | |
2357 | format_end = cmdrest; | |
2358 | ||
2359 | if (*cmdrest++ != '"') | |
2360 | error (_("Bad format string, non-terminated '\"'.")); | |
2361 | ||
f1735a53 | 2362 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2363 | |
2364 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2365 | error (_("Invalid argument syntax")); | |
2366 | ||
2367 | if (*cmdrest == ',') | |
2368 | cmdrest++; | |
f1735a53 | 2369 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2370 | |
2371 | /* For each argument, make an expression. */ | |
2372 | ||
8e481c3b | 2373 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2374 | while (*cmdrest != '\0') |
2375 | { | |
bbc13ae3 | 2376 | const char *cmd1; |
d3ce09f5 SS |
2377 | |
2378 | cmd1 = cmdrest; | |
4d01a485 | 2379 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2380 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2381 | cmdrest = cmd1; |
2382 | if (*cmdrest == ',') | |
2383 | ++cmdrest; | |
2384 | } | |
2385 | ||
833177a4 PA |
2386 | agent_expr_up aexpr; |
2387 | ||
d3ce09f5 SS |
2388 | /* We don't want to stop processing, so catch any errors |
2389 | that may show up. */ | |
a70b8144 | 2390 | try |
d3ce09f5 | 2391 | { |
036e657b JB |
2392 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2393 | format_start, format_end - format_start, | |
8e481c3b | 2394 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2395 | } |
230d2906 | 2396 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2397 | { |
2398 | /* If we got here, it means the command could not be parsed to a valid | |
2399 | bytecode expression and thus can't be evaluated on the target's side. | |
2400 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2401 | } |
492d29ea | 2402 | |
d3ce09f5 SS |
2403 | /* We have a valid agent expression, return it. */ |
2404 | return aexpr; | |
2405 | } | |
2406 | ||
2407 | /* Based on location BL, create a list of breakpoint commands to be | |
2408 | passed on to the target. If we have duplicated locations with | |
2409 | different commands, we will add any such to the list. */ | |
2410 | ||
2411 | static void | |
2412 | build_target_command_list (struct bp_location *bl) | |
2413 | { | |
d3ce09f5 SS |
2414 | int null_command_or_parse_error = 0; |
2415 | int modified = bl->needs_update; | |
d3ce09f5 | 2416 | |
3cde5c42 PA |
2417 | /* Clear commands left over from a previous insert. */ |
2418 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2419 | |
41fac0cf | 2420 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2421 | return; |
2422 | ||
41fac0cf PA |
2423 | /* For now, limit to agent-style dprintf breakpoints. */ |
2424 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2425 | return; |
2426 | ||
e0d9a270 SM |
2427 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2428 | ||
7f32a4d5 PA |
2429 | /* For now, if we have any location at the same address that isn't a |
2430 | dprintf, don't install the target-side commands, as that would | |
2431 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2432 | control. */ |
e0d9a270 SM |
2433 | for (bp_location *loc : loc_range) |
2434 | if (is_breakpoint (loc->owner) | |
2435 | && loc->pspace->num == bl->pspace->num | |
2436 | && loc->owner->type != bp_dprintf) | |
2437 | return; | |
41fac0cf | 2438 | |
d3ce09f5 SS |
2439 | /* Do a first pass to check for locations with no assigned |
2440 | conditions or conditions that fail to parse to a valid agent expression | |
2441 | bytecode. If any of these happen, then it's no use to send conditions | |
2442 | to the target since this location will always trigger and generate a | |
2443 | response back to GDB. */ | |
e0d9a270 | 2444 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2445 | { |
d3ce09f5 SS |
2446 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2447 | { | |
2448 | if (modified) | |
2449 | { | |
d3ce09f5 SS |
2450 | /* Re-parse the commands since something changed. In that |
2451 | case we already freed the command bytecodes (see | |
2452 | force_breakpoint_reinsertion). We just | |
2453 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2454 | loc->cmd_bytecode |
2455 | = parse_cmd_to_aexpr (bl->address, | |
2456 | loc->owner->extra_string); | |
d3ce09f5 SS |
2457 | } |
2458 | ||
2459 | /* If we have a NULL bytecode expression, it means something | |
2460 | went wrong or we have a null command expression. */ | |
2461 | if (!loc->cmd_bytecode) | |
2462 | { | |
2463 | null_command_or_parse_error = 1; | |
2464 | break; | |
2465 | } | |
2466 | } | |
2467 | } | |
2468 | ||
2469 | /* If anything failed, then we're not doing target-side commands, | |
2470 | and so clean up. */ | |
2471 | if (null_command_or_parse_error) | |
2472 | { | |
e0d9a270 SM |
2473 | for (bp_location *loc : loc_range) |
2474 | if (is_breakpoint (loc->owner) | |
2475 | && loc->pspace->num == bl->pspace->num) | |
2476 | { | |
2477 | /* Only go as far as the first NULL bytecode is | |
2478 | located. */ | |
2479 | if (loc->cmd_bytecode == NULL) | |
2480 | return; | |
d3ce09f5 | 2481 | |
e0d9a270 SM |
2482 | loc->cmd_bytecode.reset (); |
2483 | } | |
d3ce09f5 SS |
2484 | } |
2485 | ||
7f32a4d5 PA |
2486 | /* No NULL commands or failed bytecode generation. Build a command |
2487 | list for all duplicate locations at this location's address. | |
2488 | Note that here we must care for whether the breakpoint location | |
2489 | types are considered duplicates, otherwise, say, if we have a | |
2490 | software and hardware location at the same address, the target | |
2491 | could end up running the commands twice. For the moment, we only | |
2492 | support targets-side commands with dprintf, but it doesn't hurt | |
2493 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2494 | for (bp_location *loc : loc_range) |
2495 | if (breakpoint_locations_match (bl, loc) | |
2496 | && loc->owner->extra_string | |
2497 | && is_breakpoint (loc->owner) | |
2498 | && loc->pspace->num == bl->pspace->num | |
2499 | && loc->owner->enable_state == bp_enabled | |
2500 | && loc->enabled | |
2501 | && !loc->disabled_by_cond) | |
2502 | { | |
2503 | /* Add the command to the vector. This will be used later | |
2504 | to send the commands to the target. */ | |
2505 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2506 | } | |
d3ce09f5 SS |
2507 | |
2508 | bl->target_info.persist = 0; | |
2509 | /* Maybe flag this location as persistent. */ | |
2510 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2511 | bl->target_info.persist = 1; | |
2512 | } | |
2513 | ||
833b7ab5 YQ |
2514 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2515 | of breakpoint according to ADDR except single-step breakpoint. | |
2516 | Get the kind of single-step breakpoint according to the current | |
2517 | registers state. */ | |
cd6c3b4f YQ |
2518 | |
2519 | static int | |
2520 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2521 | { | |
833b7ab5 YQ |
2522 | if (bl->owner->type == bp_single_step) |
2523 | { | |
2524 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2525 | struct regcache *regcache; | |
2526 | ||
00431a78 | 2527 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2528 | |
2529 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2530 | regcache, addr); | |
2531 | } | |
2532 | else | |
2533 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2534 | } |
2535 | ||
35df4500 TJB |
2536 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2537 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2538 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2539 | Returns 0 for success, 1 if the bp_location type is not supported or |
2540 | -1 for failure. | |
879bfdc2 | 2541 | |
4a64f543 MS |
2542 | NOTE drow/2003-09-09: This routine could be broken down to an |
2543 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2544 | static int |
35df4500 | 2545 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2546 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2547 | int *disabled_breaks, |
dd61ec5c MW |
2548 | int *hw_breakpoint_error, |
2549 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2550 | { |
cc06b668 | 2551 | gdb_exception bp_excpt; |
879bfdc2 | 2552 | |
b775012e | 2553 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2554 | return 0; |
2555 | ||
35c63cd8 JB |
2556 | /* Note we don't initialize bl->target_info, as that wipes out |
2557 | the breakpoint location's shadow_contents if the breakpoint | |
2558 | is still inserted at that location. This in turn breaks | |
2559 | target_read_memory which depends on these buffers when | |
2560 | a memory read is requested at the breakpoint location: | |
2561 | Once the target_info has been wiped, we fail to see that | |
2562 | we have a breakpoint inserted at that address and thus | |
2563 | read the breakpoint instead of returning the data saved in | |
2564 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2565 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2566 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2567 | bl->target_info.length = bl->length; |
8181d85f | 2568 | |
b775012e LM |
2569 | /* When working with target-side conditions, we must pass all the conditions |
2570 | for the same breakpoint address down to the target since GDB will not | |
2571 | insert those locations. With a list of breakpoint conditions, the target | |
2572 | can decide when to stop and notify GDB. */ | |
2573 | ||
2574 | if (is_breakpoint (bl->owner)) | |
2575 | { | |
2576 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2577 | build_target_command_list (bl); |
2578 | /* Reset the modification marker. */ | |
b775012e LM |
2579 | bl->needs_update = 0; |
2580 | } | |
2581 | ||
7f32a4d5 PA |
2582 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2583 | set at a read-only address, then a breakpoint location will have | |
2584 | been changed to hardware breakpoint before we get here. If it is | |
2585 | "off" however, error out before actually trying to insert the | |
2586 | breakpoint, with a nicer error message. */ | |
35df4500 | 2587 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2588 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2589 | { |
7f32a4d5 | 2590 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2591 | |
7f32a4d5 PA |
2592 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2593 | { | |
2594 | fprintf_unfiltered (tmp_error_stream, | |
2595 | _("Cannot insert breakpoint %d.\n" | |
2596 | "Cannot set software breakpoint " | |
2597 | "at read-only address %s\n"), | |
2598 | bl->owner->number, | |
2599 | paddress (bl->gdbarch, bl->address)); | |
2600 | return 1; | |
765dc015 | 2601 | } |
7f32a4d5 PA |
2602 | } |
2603 | ||
2604 | if (bl->loc_type == bp_loc_software_breakpoint | |
2605 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2606 | { | |
879bfdc2 DJ |
2607 | /* First check to see if we have to handle an overlay. */ |
2608 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2609 | || bl->section == NULL |
2610 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2611 | { |
2612 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2613 | try |
dd61ec5c | 2614 | { |
0000e5cc PA |
2615 | int val; |
2616 | ||
dd61ec5c | 2617 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2618 | if (val) |
688fca4f | 2619 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2620 | } |
94aeb44b | 2621 | catch (gdb_exception &e) |
dd61ec5c | 2622 | { |
94aeb44b | 2623 | bp_excpt = std::move (e); |
dd61ec5c | 2624 | } |
879bfdc2 DJ |
2625 | } |
2626 | else | |
2627 | { | |
4a64f543 | 2628 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2629 | Shall we set a breakpoint at the LMA? */ |
2630 | if (!overlay_events_enabled) | |
2631 | { | |
2632 | /* Yes -- overlay event support is not active, | |
2633 | so we must try to set a breakpoint at the LMA. | |
2634 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2635 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2636 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2637 | bl->owner->number); |
879bfdc2 DJ |
2638 | else |
2639 | { | |
35df4500 TJB |
2640 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2641 | bl->section); | |
879bfdc2 | 2642 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2643 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2644 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2645 | |
2646 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2647 | try |
0000e5cc PA |
2648 | { |
2649 | int val; | |
2650 | ||
579c6ad9 | 2651 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2652 | = breakpoint_kind (bl, &addr); |
2653 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2654 | val = target_insert_breakpoint (bl->gdbarch, |
2655 | &bl->overlay_target_info); | |
2656 | if (val) | |
688fca4f PA |
2657 | bp_excpt |
2658 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2659 | } |
94aeb44b | 2660 | catch (gdb_exception &e) |
0000e5cc | 2661 | { |
94aeb44b | 2662 | bp_excpt = std::move (e); |
0000e5cc PA |
2663 | } |
2664 | ||
688fca4f | 2665 | if (bp_excpt.reason != 0) |
99361f52 | 2666 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2667 | "Overlay breakpoint %d " |
2668 | "failed: in ROM?\n", | |
35df4500 | 2669 | bl->owner->number); |
879bfdc2 DJ |
2670 | } |
2671 | } | |
2672 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2673 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2674 | { |
2675 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2676 | try |
dda83cd7 | 2677 | { |
0000e5cc PA |
2678 | int val; |
2679 | ||
dda83cd7 | 2680 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2681 | if (val) |
688fca4f | 2682 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2683 | } |
94aeb44b | 2684 | catch (gdb_exception &e) |
dda83cd7 | 2685 | { |
94aeb44b | 2686 | bp_excpt = std::move (e); |
dda83cd7 | 2687 | } |
879bfdc2 DJ |
2688 | } |
2689 | else | |
2690 | { | |
2691 | /* No. This breakpoint will not be inserted. | |
2692 | No error, but do not mark the bp as 'inserted'. */ | |
2693 | return 0; | |
2694 | } | |
2695 | } | |
2696 | ||
688fca4f | 2697 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2698 | { |
2699 | /* Can't set the breakpoint. */ | |
0000e5cc | 2700 | |
80dc83fd AB |
2701 | /* If the target has closed then it will have deleted any |
2702 | breakpoints inserted within the target inferior, as a result | |
2703 | any further attempts to interact with the breakpoint objects | |
2704 | is not possible. Just rethrow the error. */ | |
2705 | if (bp_excpt.error == TARGET_CLOSE_ERROR) | |
2706 | throw bp_excpt; | |
2707 | gdb_assert (bl->owner != nullptr); | |
2708 | ||
0000e5cc PA |
2709 | /* In some cases, we might not be able to insert a |
2710 | breakpoint in a shared library that has already been | |
2711 | removed, but we have not yet processed the shlib unload | |
2712 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2713 | breakpoint insertion themselves can't tell why the |
2714 | breakpoint insertion failed (e.g., the remote target | |
2715 | doesn't define error codes), so we must treat generic | |
2716 | errors as memory errors. */ | |
688fca4f PA |
2717 | if (bp_excpt.reason == RETURN_ERROR |
2718 | && (bp_excpt.error == GENERIC_ERROR | |
2719 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2720 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2721 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2722 | || shared_objfile_contains_address_p (bl->pspace, |
2723 | bl->address))) | |
879bfdc2 | 2724 | { |
4a64f543 | 2725 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2726 | bl->shlib_disabled = 1; |
76727919 | 2727 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2728 | if (!*disabled_breaks) |
2729 | { | |
2730 | fprintf_unfiltered (tmp_error_stream, | |
2731 | "Cannot insert breakpoint %d.\n", | |
2732 | bl->owner->number); | |
2733 | fprintf_unfiltered (tmp_error_stream, | |
2734 | "Temporarily disabling shared " | |
2735 | "library breakpoints:\n"); | |
2736 | } | |
2737 | *disabled_breaks = 1; | |
879bfdc2 | 2738 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2739 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2740 | return 0; |
879bfdc2 DJ |
2741 | } |
2742 | else | |
879bfdc2 | 2743 | { |
35df4500 | 2744 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2745 | { |
0000e5cc | 2746 | *hw_breakpoint_error = 1; |
688fca4f | 2747 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dda83cd7 SM |
2748 | fprintf_unfiltered (tmp_error_stream, |
2749 | "Cannot insert hardware breakpoint %d%s", | |
2750 | bl->owner->number, | |
688fca4f | 2751 | bp_excpt.message ? ":" : ".\n"); |
dda83cd7 SM |
2752 | if (bp_excpt.message != NULL) |
2753 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2754 | bp_excpt.what ()); |
879bfdc2 DJ |
2755 | } |
2756 | else | |
2757 | { | |
688fca4f | 2758 | if (bp_excpt.message == NULL) |
0000e5cc | 2759 | { |
1ccbe998 | 2760 | std::string message |
0000e5cc PA |
2761 | = memory_error_message (TARGET_XFER_E_IO, |
2762 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2763 | |
2764 | fprintf_unfiltered (tmp_error_stream, | |
2765 | "Cannot insert breakpoint %d.\n" | |
2766 | "%s\n", | |
1ccbe998 | 2767 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2768 | } |
2769 | else | |
2770 | { | |
2771 | fprintf_unfiltered (tmp_error_stream, | |
2772 | "Cannot insert breakpoint %d: %s\n", | |
2773 | bl->owner->number, | |
3d6e9d23 | 2774 | bp_excpt.what ()); |
0000e5cc | 2775 | } |
879bfdc2 | 2776 | } |
0000e5cc | 2777 | return 1; |
879bfdc2 DJ |
2778 | |
2779 | } | |
2780 | } | |
2781 | else | |
35df4500 | 2782 | bl->inserted = 1; |
879bfdc2 | 2783 | |
0000e5cc | 2784 | return 0; |
879bfdc2 DJ |
2785 | } |
2786 | ||
35df4500 | 2787 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2788 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2789 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2790 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2791 | { |
0000e5cc PA |
2792 | int val; |
2793 | ||
77b06cd7 TJB |
2794 | gdb_assert (bl->owner->ops != NULL |
2795 | && bl->owner->ops->insert_location != NULL); | |
2796 | ||
2797 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2798 | |
2799 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2800 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2801 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2802 | { |
85d721b8 PA |
2803 | /* But don't try to insert it, if there's already another |
2804 | hw_access location that would be considered a duplicate | |
2805 | of this one. */ | |
48d7020b | 2806 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2807 | if (loc != bl |
85d721b8 | 2808 | && loc->watchpoint_type == hw_access |
35df4500 | 2809 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2810 | { |
35df4500 TJB |
2811 | bl->duplicate = 1; |
2812 | bl->inserted = 1; | |
2813 | bl->target_info = loc->target_info; | |
2814 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2815 | val = 0; |
2816 | break; | |
2817 | } | |
2818 | ||
2819 | if (val == 1) | |
2820 | { | |
77b06cd7 TJB |
2821 | bl->watchpoint_type = hw_access; |
2822 | val = bl->owner->ops->insert_location (bl); | |
2823 | ||
2824 | if (val) | |
2825 | /* Back to the original value. */ | |
2826 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2827 | } |
2828 | } | |
2829 | ||
35df4500 | 2830 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2831 | } |
2832 | ||
35df4500 | 2833 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2834 | { |
0000e5cc PA |
2835 | int val; |
2836 | ||
77b06cd7 TJB |
2837 | gdb_assert (bl->owner->ops != NULL |
2838 | && bl->owner->ops->insert_location != NULL); | |
2839 | ||
2840 | val = bl->owner->ops->insert_location (bl); | |
2841 | if (val) | |
2842 | { | |
2843 | bl->owner->enable_state = bp_disabled; | |
2844 | ||
2845 | if (val == 1) | |
2846 | warning (_("\ | |
2847 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2848 | of catchpoint."), bl->owner->number); | |
2849 | else | |
2850 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2851 | } | |
2852 | ||
2853 | bl->inserted = (val == 0); | |
1640b821 DJ |
2854 | |
2855 | /* We've already printed an error message if there was a problem | |
2856 | inserting this catchpoint, and we've disabled the catchpoint, | |
2857 | so just return success. */ | |
2858 | return 0; | |
879bfdc2 DJ |
2859 | } |
2860 | ||
2861 | return 0; | |
2862 | } | |
2863 | ||
6c95b8df PA |
2864 | /* This function is called when program space PSPACE is about to be |
2865 | deleted. It takes care of updating breakpoints to not reference | |
2866 | PSPACE anymore. */ | |
2867 | ||
2868 | void | |
2869 | breakpoint_program_space_exit (struct program_space *pspace) | |
2870 | { | |
6c95b8df | 2871 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
2872 | for (breakpoint *b : all_breakpoints_safe ()) |
2873 | if (b->pspace == pspace) | |
2874 | delete_breakpoint (b); | |
6c95b8df PA |
2875 | |
2876 | /* Breakpoints set through other program spaces could have locations | |
2877 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 2878 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
2879 | { |
2880 | struct bp_location *tmp; | |
2881 | ||
2882 | if (loc->pspace == pspace) | |
2883 | { | |
2bdf28a0 | 2884 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2885 | if (loc->owner->loc == loc) |
2886 | loc->owner->loc = loc->next; | |
2887 | else | |
2888 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2889 | if (tmp->next == loc) | |
2890 | { | |
2891 | tmp->next = loc->next; | |
2892 | break; | |
2893 | } | |
2894 | } | |
2895 | } | |
2896 | ||
2897 | /* Now update the global location list to permanently delete the | |
2898 | removed locations above. */ | |
44702360 | 2899 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2900 | } |
2901 | ||
74960c60 VP |
2902 | /* Make sure all breakpoints are inserted in inferior. |
2903 | Throws exception on any error. | |
2904 | A breakpoint that is already inserted won't be inserted | |
2905 | again, so calling this function twice is safe. */ | |
2906 | void | |
2907 | insert_breakpoints (void) | |
2908 | { | |
43892fdf | 2909 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 2910 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
2911 | { |
2912 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2913 | ||
2914 | update_watchpoint (w, 0 /* don't reparse. */); | |
2915 | } | |
74960c60 | 2916 | |
04086b45 PA |
2917 | /* Updating watchpoints creates new locations, so update the global |
2918 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
2919 | ignore breakpoints_always_inserted_mode. Also, |
2920 | update_global_location_list tries to "upgrade" software | |
2921 | breakpoints to hardware breakpoints to handle "set breakpoint | |
2922 | auto-hw", so we need to call it even if we don't have new | |
2923 | locations. */ | |
04086b45 | 2924 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
2925 | } |
2926 | ||
b775012e LM |
2927 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2928 | target. It is the case with deleting and disabling of breakpoints when using | |
2929 | always-inserted mode. */ | |
2930 | ||
2931 | static void | |
2932 | update_inserted_breakpoint_locations (void) | |
2933 | { | |
b775012e LM |
2934 | int error_flag = 0; |
2935 | int val = 0; | |
2936 | int disabled_breaks = 0; | |
2937 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2938 | int hw_bp_details_reported = 0; |
b775012e | 2939 | |
d7e74731 | 2940 | string_file tmp_error_stream; |
b775012e LM |
2941 | |
2942 | /* Explicitly mark the warning -- this will only be printed if | |
2943 | there was an error. */ | |
d7e74731 | 2944 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2945 | |
5ed8105e | 2946 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 2947 | |
48d7020b | 2948 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
2949 | { |
2950 | /* We only want to update software breakpoints and hardware | |
2951 | breakpoints. */ | |
2952 | if (!is_breakpoint (bl->owner)) | |
2953 | continue; | |
2954 | ||
2955 | /* We only want to update locations that are already inserted | |
2956 | and need updating. This is to avoid unwanted insertion during | |
2957 | deletion of breakpoints. */ | |
4daf1902 | 2958 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2959 | continue; |
2960 | ||
2961 | switch_to_program_space_and_thread (bl->pspace); | |
2962 | ||
2963 | /* For targets that support global breakpoints, there's no need | |
2964 | to select an inferior to insert breakpoint to. In fact, even | |
2965 | if we aren't attached to any process yet, we should still | |
2966 | insert breakpoints. */ | |
f5656ead | 2967 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 2968 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
2969 | continue; |
2970 | ||
d7e74731 | 2971 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2972 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2973 | if (val) |
2974 | error_flag = val; | |
2975 | } | |
2976 | ||
2977 | if (error_flag) | |
2978 | { | |
223ffa71 | 2979 | target_terminal::ours_for_output (); |
b775012e LM |
2980 | error_stream (tmp_error_stream); |
2981 | } | |
b775012e LM |
2982 | } |
2983 | ||
c30eee59 | 2984 | /* Used when starting or continuing the program. */ |
c906108c | 2985 | |
74960c60 VP |
2986 | static void |
2987 | insert_breakpoint_locations (void) | |
c906108c | 2988 | { |
eacd795a | 2989 | int error_flag = 0; |
c906108c | 2990 | int val = 0; |
3fbb6ffa | 2991 | int disabled_breaks = 0; |
81d0cc19 | 2992 | int hw_breakpoint_error = 0; |
dd61ec5c | 2993 | int hw_bp_error_explained_already = 0; |
c906108c | 2994 | |
d7e74731 PA |
2995 | string_file tmp_error_stream; |
2996 | ||
81d0cc19 GS |
2997 | /* Explicitly mark the warning -- this will only be printed if |
2998 | there was an error. */ | |
d7e74731 | 2999 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3000 | |
5ed8105e | 3001 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3002 | |
48d7020b | 3003 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3004 | { |
b775012e | 3005 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3006 | continue; |
3007 | ||
4a64f543 MS |
3008 | /* There is no point inserting thread-specific breakpoints if |
3009 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3010 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3011 | if (bl->owner->thread != -1 |
5d5658a1 | 3012 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3013 | continue; |
3014 | ||
35df4500 | 3015 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3016 | |
3017 | /* For targets that support global breakpoints, there's no need | |
3018 | to select an inferior to insert breakpoint to. In fact, even | |
3019 | if we aren't attached to any process yet, we should still | |
3020 | insert breakpoints. */ | |
f5656ead | 3021 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3022 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3023 | continue; |
3024 | ||
d7e74731 | 3025 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3026 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3027 | if (val) |
eacd795a | 3028 | error_flag = val; |
879bfdc2 | 3029 | } |
c906108c | 3030 | |
4a64f543 MS |
3031 | /* If we failed to insert all locations of a watchpoint, remove |
3032 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3033 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee VP |
3034 | { |
3035 | int some_failed = 0; | |
a5606eee VP |
3036 | |
3037 | if (!is_hardware_watchpoint (bpt)) | |
3038 | continue; | |
3039 | ||
d6b74ac4 | 3040 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3041 | continue; |
74960c60 VP |
3042 | |
3043 | if (bpt->disposition == disp_del_at_next_stop) | |
3044 | continue; | |
a5606eee | 3045 | |
40cb8ca5 | 3046 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3047 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3048 | { |
3049 | some_failed = 1; | |
3050 | break; | |
3051 | } | |
40cb8ca5 | 3052 | |
a5606eee VP |
3053 | if (some_failed) |
3054 | { | |
40cb8ca5 | 3055 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3056 | if (loc->inserted) |
834c0d03 | 3057 | remove_breakpoint (loc); |
a5606eee VP |
3058 | |
3059 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3060 | tmp_error_stream.printf ("Could not insert " |
3061 | "hardware watchpoint %d.\n", | |
3062 | bpt->number); | |
eacd795a | 3063 | error_flag = -1; |
a5606eee VP |
3064 | } |
3065 | } | |
3066 | ||
eacd795a | 3067 | if (error_flag) |
81d0cc19 GS |
3068 | { |
3069 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3070 | message about possibly exhausted resources. */ |
dd61ec5c | 3071 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3072 | { |
d7e74731 | 3073 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3074 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3075 | } |
223ffa71 | 3076 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3077 | error_stream (tmp_error_stream); |
3078 | } | |
c906108c SS |
3079 | } |
3080 | ||
c30eee59 TJB |
3081 | /* Used when the program stops. |
3082 | Returns zero if successful, or non-zero if there was a problem | |
3083 | removing a breakpoint location. */ | |
3084 | ||
c906108c | 3085 | int |
fba45db2 | 3086 | remove_breakpoints (void) |
c906108c | 3087 | { |
3a1bae8e | 3088 | int val = 0; |
c906108c | 3089 | |
48d7020b | 3090 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3091 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3092 | val |= remove_breakpoint (bl); |
01add95b | 3093 | |
3a1bae8e | 3094 | return val; |
c906108c SS |
3095 | } |
3096 | ||
49fa26b0 PA |
3097 | /* When a thread exits, remove breakpoints that are related to |
3098 | that thread. */ | |
3099 | ||
3100 | static void | |
3101 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3102 | { | |
1428b37a | 3103 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3104 | { |
5d5658a1 | 3105 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3106 | { |
3107 | b->disposition = disp_del_at_next_stop; | |
3108 | ||
3109 | printf_filtered (_("\ | |
43792cf0 PA |
3110 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3111 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3112 | |
3113 | /* Hide it from the user. */ | |
3114 | b->number = 0; | |
3115 | } | |
3116 | } | |
3117 | } | |
3118 | ||
f3869b1a | 3119 | /* See breakpoint.h. */ |
6c95b8df | 3120 | |
f3869b1a | 3121 | void |
00431a78 | 3122 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3123 | { |
6c95b8df | 3124 | int val; |
6c95b8df | 3125 | |
48d7020b | 3126 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3127 | { |
3128 | if (bl->pspace != inf->pspace) | |
3129 | continue; | |
6c95b8df | 3130 | |
01add95b SM |
3131 | if (bl->inserted && !bl->target_info.persist) |
3132 | { | |
3133 | val = remove_breakpoint (bl); | |
3134 | if (val != 0) | |
3135 | return; | |
3136 | } | |
3137 | } | |
6c95b8df PA |
3138 | } |
3139 | ||
e58b0e63 PA |
3140 | static int internal_breakpoint_number = -1; |
3141 | ||
84f4c1fe PM |
3142 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3143 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3144 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3145 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3146 | breakpoint_count and that value incremented. Internal breakpoints |
3147 | do not set the internal var bpnum. */ | |
3148 | static void | |
3149 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3150 | { | |
3151 | if (internal) | |
3152 | b->number = internal_breakpoint_number--; | |
3153 | else | |
3154 | { | |
3155 | set_breakpoint_count (breakpoint_count + 1); | |
3156 | b->number = breakpoint_count; | |
3157 | } | |
3158 | } | |
3159 | ||
e62c965a | 3160 | static struct breakpoint * |
a6d9a66e | 3161 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3162 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3163 | const struct breakpoint_ops *ops) |
e62c965a | 3164 | { |
51abb421 | 3165 | symtab_and_line sal; |
e62c965a PP |
3166 | sal.pc = address; |
3167 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3168 | sal.pspace = current_program_space; |
e62c965a | 3169 | |
51abb421 | 3170 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3171 | b->number = internal_breakpoint_number--; |
3172 | b->disposition = disp_donttouch; | |
3173 | ||
3174 | return b; | |
3175 | } | |
3176 | ||
17450429 PP |
3177 | static const char *const longjmp_names[] = |
3178 | { | |
3179 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3180 | }; | |
3181 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3182 | ||
3183 | /* Per-objfile data private to breakpoint.c. */ | |
3184 | struct breakpoint_objfile_data | |
3185 | { | |
3186 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3187 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3188 | |
3189 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3190 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3191 | |
28106bc2 | 3192 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3193 | int longjmp_searched = 0; |
28106bc2 | 3194 | |
45461e0d SM |
3195 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3196 | references. */ | |
3197 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3198 | |
17450429 | 3199 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3200 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3201 | |
3202 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3203 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3204 | |
3205 | /* True if we have looked for exception probes. */ | |
43dce439 | 3206 | int exception_searched = 0; |
28106bc2 | 3207 | |
45461e0d SM |
3208 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3209 | references. */ | |
3210 | std::vector<probe *> exception_probes; | |
17450429 PP |
3211 | }; |
3212 | ||
51d3063a TT |
3213 | static const struct objfile_key<breakpoint_objfile_data> |
3214 | breakpoint_objfile_key; | |
17450429 PP |
3215 | |
3216 | /* Minimal symbol not found sentinel. */ | |
3217 | static struct minimal_symbol msym_not_found; | |
3218 | ||
3219 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3220 | ||
3221 | static int | |
3222 | msym_not_found_p (const struct minimal_symbol *msym) | |
3223 | { | |
3224 | return msym == &msym_not_found; | |
3225 | } | |
3226 | ||
3227 | /* Return per-objfile data needed by breakpoint.c. | |
3228 | Allocate the data if necessary. */ | |
3229 | ||
3230 | static struct breakpoint_objfile_data * | |
3231 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3232 | { | |
3233 | struct breakpoint_objfile_data *bp_objfile_data; | |
3234 | ||
51d3063a | 3235 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3236 | if (bp_objfile_data == NULL) |
51d3063a | 3237 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3238 | return bp_objfile_data; |
3239 | } | |
3240 | ||
e62c965a | 3241 | static void |
af02033e | 3242 | create_overlay_event_breakpoint (void) |
e62c965a | 3243 | { |
af02033e | 3244 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3245 | |
2030c079 | 3246 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3247 | { |
3248 | struct breakpoint *b; | |
17450429 PP |
3249 | struct breakpoint_objfile_data *bp_objfile_data; |
3250 | CORE_ADDR addr; | |
67994074 | 3251 | struct explicit_location explicit_loc; |
69de3c6a | 3252 | |
17450429 PP |
3253 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3254 | ||
3b7344d5 | 3255 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3256 | continue; |
3257 | ||
3b7344d5 | 3258 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3259 | { |
3b7344d5 | 3260 | struct bound_minimal_symbol m; |
17450429 PP |
3261 | |
3262 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3263 | if (m.minsym == NULL) |
17450429 PP |
3264 | { |
3265 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3266 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3267 | continue; |
3268 | } | |
3269 | bp_objfile_data->overlay_msym = m; | |
3270 | } | |
e62c965a | 3271 | |
77e371c0 | 3272 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
08feed99 | 3273 | b = create_internal_breakpoint (objfile->arch (), addr, |
dda83cd7 | 3274 | bp_overlay_event, |
06edf0c0 | 3275 | &internal_breakpoint_ops); |
67994074 KS |
3276 | initialize_explicit_location (&explicit_loc); |
3277 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3278 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3279 | |
69de3c6a | 3280 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3281 | { |
3282 | b->enable_state = bp_enabled; | |
3283 | overlay_events_enabled = 1; | |
3284 | } | |
69de3c6a PP |
3285 | else |
3286 | { | |
dda83cd7 SM |
3287 | b->enable_state = bp_disabled; |
3288 | overlay_events_enabled = 0; | |
69de3c6a | 3289 | } |
e62c965a | 3290 | } |
e62c965a PP |
3291 | } |
3292 | ||
2a7f6487 TV |
3293 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3294 | true if a breakpoint was installed. */ | |
3295 | ||
3296 | static bool | |
3297 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3298 | { |
2a7f6487 TV |
3299 | struct gdbarch *gdbarch = objfile->arch (); |
3300 | struct breakpoint_objfile_data *bp_objfile_data | |
3301 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3302 | |
2a7f6487 | 3303 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3304 | { |
2a7f6487 TV |
3305 | std::vector<probe *> ret |
3306 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3307 | |
2a7f6487 | 3308 | if (!ret.empty ()) |
94c93c35 | 3309 | { |
2a7f6487 TV |
3310 | /* We are only interested in checking one element. */ |
3311 | probe *p = ret[0]; | |
0fd8e87f | 3312 | |
2a7f6487 TV |
3313 | if (!p->can_evaluate_arguments ()) |
3314 | { | |
3315 | /* We cannot use the probe interface here, | |
3316 | because it does not know how to evaluate | |
3317 | arguments. */ | |
3318 | ret.clear (); | |
3319 | } | |
3320 | } | |
3321 | bp_objfile_data->longjmp_probes = ret; | |
3322 | bp_objfile_data->longjmp_searched = 1; | |
3323 | } | |
0fd8e87f | 3324 | |
2a7f6487 TV |
3325 | if (bp_objfile_data->longjmp_probes.empty ()) |
3326 | return false; | |
17450429 | 3327 | |
2a7f6487 TV |
3328 | for (probe *p : bp_objfile_data->longjmp_probes) |
3329 | { | |
3330 | struct breakpoint *b; | |
25f9533e | 3331 | |
2a7f6487 TV |
3332 | b = create_internal_breakpoint (gdbarch, |
3333 | p->get_relocated_address (objfile), | |
3334 | bp_longjmp_master, | |
3335 | &internal_breakpoint_ops); | |
3336 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3337 | b->enable_state = bp_disabled; | |
3338 | } | |
aed57c53 | 3339 | |
2a7f6487 TV |
3340 | return true; |
3341 | } | |
25f9533e | 3342 | |
2a7f6487 TV |
3343 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3344 | Return true if at least one breakpoint was installed. */ | |
3345 | ||
3346 | static bool | |
3347 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3348 | { | |
3349 | struct gdbarch *gdbarch = objfile->arch (); | |
3350 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3351 | return false; | |
3352 | ||
3353 | struct breakpoint_objfile_data *bp_objfile_data | |
3354 | = get_breakpoint_objfile_data (objfile); | |
3355 | unsigned int installed_bp = 0; | |
3356 | ||
3357 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3358 | { | |
3359 | struct breakpoint *b; | |
3360 | const char *func_name; | |
3361 | CORE_ADDR addr; | |
3362 | struct explicit_location explicit_loc; | |
3363 | ||
3364 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3365 | continue; | |
28106bc2 | 3366 | |
2a7f6487 TV |
3367 | func_name = longjmp_names[i]; |
3368 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3369 | { | |
3370 | struct bound_minimal_symbol m; | |
3371 | ||
3372 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3373 | if (m.minsym == NULL) | |
3374 | { | |
3375 | /* Prevent future lookups in this objfile. */ | |
3376 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3377 | continue; |
3378 | } | |
2a7f6487 TV |
3379 | bp_objfile_data->longjmp_msym[i] = m; |
3380 | } | |
28106bc2 | 3381 | |
2a7f6487 TV |
3382 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3383 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3384 | &internal_breakpoint_ops); | |
3385 | initialize_explicit_location (&explicit_loc); | |
3386 | explicit_loc.function_name = ASTRDUP (func_name); | |
3387 | b->location = new_explicit_location (&explicit_loc); | |
3388 | b->enable_state = bp_disabled; | |
3389 | installed_bp++; | |
3390 | } | |
28106bc2 | 3391 | |
2a7f6487 TV |
3392 | return installed_bp > 0; |
3393 | } | |
0fd8e87f | 3394 | |
2a7f6487 | 3395 | /* Create a master longjmp breakpoint. */ |
17450429 | 3396 | |
2a7f6487 TV |
3397 | static void |
3398 | create_longjmp_master_breakpoint (void) | |
3399 | { | |
3400 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3401 | |
2a7f6487 TV |
3402 | for (struct program_space *pspace : program_spaces) |
3403 | { | |
3404 | set_current_program_space (pspace); | |
17450429 | 3405 | |
2a7f6487 TV |
3406 | for (objfile *obj : current_program_space->objfiles ()) |
3407 | { | |
3408 | /* Skip separate debug object, it's handled in the loop below. */ | |
3409 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3410 | continue; | |
3411 | ||
3412 | /* Try a probe kind breakpoint on main objfile. */ | |
3413 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3414 | continue; | |
3415 | ||
3416 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3417 | objfiles. */ | |
3418 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3419 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3420 | break; | |
94c93c35 TT |
3421 | } |
3422 | } | |
0fd8e87f UW |
3423 | } |
3424 | ||
af02033e | 3425 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3426 | static void |
af02033e | 3427 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3428 | { |
af02033e | 3429 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3430 | |
5ed8105e | 3431 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3432 | |
94c93c35 TT |
3433 | for (struct program_space *pspace : program_spaces) |
3434 | { | |
3435 | CORE_ADDR addr; | |
17450429 | 3436 | |
94c93c35 | 3437 | set_current_program_space (pspace); |
17450429 | 3438 | |
94c93c35 TT |
3439 | for (objfile *objfile : current_program_space->objfiles ()) |
3440 | { | |
3441 | struct breakpoint *b; | |
3442 | struct breakpoint_objfile_data *bp_objfile_data; | |
3443 | struct explicit_location explicit_loc; | |
aa7d318d | 3444 | |
94c93c35 | 3445 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3446 | |
94c93c35 TT |
3447 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3448 | continue; | |
17450429 | 3449 | |
94c93c35 TT |
3450 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3451 | { | |
3452 | struct bound_minimal_symbol m; | |
17450429 | 3453 | |
94c93c35 TT |
3454 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3455 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3456 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3457 | { | |
3458 | /* Prevent future lookups in this objfile. */ | |
3459 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3460 | continue; | |
3461 | } | |
3462 | bp_objfile_data->terminate_msym = m; | |
3463 | } | |
aa7d318d | 3464 | |
94c93c35 TT |
3465 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3466 | b = create_internal_breakpoint (objfile->arch (), addr, | |
3467 | bp_std_terminate_master, | |
3468 | &internal_breakpoint_ops); | |
3469 | initialize_explicit_location (&explicit_loc); | |
3470 | explicit_loc.function_name = ASTRDUP (func_name); | |
3471 | b->location = new_explicit_location (&explicit_loc); | |
3472 | b->enable_state = bp_disabled; | |
3473 | } | |
3474 | } | |
aa7d318d TT |
3475 | } |
3476 | ||
1940319c TV |
3477 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3478 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3479 | |
1940319c TV |
3480 | static bool |
3481 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3482 | { |
1940319c TV |
3483 | struct breakpoint *b; |
3484 | struct gdbarch *gdbarch; | |
3485 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3486 | |
1940319c | 3487 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3488 | |
1940319c TV |
3489 | /* We prefer the SystemTap probe point if it exists. */ |
3490 | if (!bp_objfile_data->exception_searched) | |
3491 | { | |
3492 | std::vector<probe *> ret | |
3493 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3494 | |
1940319c | 3495 | if (!ret.empty ()) |
28106bc2 | 3496 | { |
1940319c TV |
3497 | /* We are only interested in checking one element. */ |
3498 | probe *p = ret[0]; | |
25f9533e | 3499 | |
1940319c | 3500 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3501 | { |
1940319c TV |
3502 | /* We cannot use the probe interface here, because it does |
3503 | not know how to evaluate arguments. */ | |
3504 | ret.clear (); | |
25f9533e | 3505 | } |
28106bc2 | 3506 | } |
1940319c TV |
3507 | bp_objfile_data->exception_probes = ret; |
3508 | bp_objfile_data->exception_searched = 1; | |
3509 | } | |
28106bc2 | 3510 | |
1940319c TV |
3511 | if (bp_objfile_data->exception_probes.empty ()) |
3512 | return false; | |
45461e0d | 3513 | |
1940319c | 3514 | gdbarch = objfile->arch (); |
28106bc2 | 3515 | |
1940319c TV |
3516 | for (probe *p : bp_objfile_data->exception_probes) |
3517 | { | |
3518 | b = create_internal_breakpoint (gdbarch, | |
3519 | p->get_relocated_address (objfile), | |
3520 | bp_exception_master, | |
3521 | &internal_breakpoint_ops); | |
3522 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); | |
3523 | b->enable_state = bp_disabled; | |
3524 | } | |
28106bc2 | 3525 | |
1940319c TV |
3526 | return true; |
3527 | } | |
28106bc2 | 3528 | |
1940319c TV |
3529 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3530 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3531 | |
1940319c TV |
3532 | static bool |
3533 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3534 | { | |
3535 | const char *const func_name = "_Unwind_DebugHook"; | |
3536 | struct breakpoint *b; | |
3537 | struct gdbarch *gdbarch; | |
3538 | struct breakpoint_objfile_data *bp_objfile_data; | |
3539 | CORE_ADDR addr; | |
3540 | struct explicit_location explicit_loc; | |
186c406b | 3541 | |
1940319c | 3542 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3543 | |
1940319c TV |
3544 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3545 | return false; | |
17450429 | 3546 | |
1940319c TV |
3547 | gdbarch = objfile->arch (); |
3548 | ||
3549 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3550 | { | |
3551 | struct bound_minimal_symbol debug_hook; | |
3552 | ||
3553 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3554 | if (debug_hook.minsym == NULL) | |
3555 | { | |
3556 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3557 | return false; | |
186c406b | 3558 | } |
17450429 | 3559 | |
1940319c TV |
3560 | bp_objfile_data->exception_msym = debug_hook; |
3561 | } | |
3562 | ||
3563 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
328d42d8 SM |
3564 | addr = gdbarch_convert_from_func_ptr_addr |
3565 | (gdbarch, addr, current_inferior ()->top_target ()); | |
1940319c TV |
3566 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3567 | &internal_breakpoint_ops); | |
3568 | initialize_explicit_location (&explicit_loc); | |
3569 | explicit_loc.function_name = ASTRDUP (func_name); | |
3570 | b->location = new_explicit_location (&explicit_loc); | |
3571 | b->enable_state = bp_disabled; | |
3572 | ||
3573 | return true; | |
3574 | } | |
3575 | ||
3576 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3577 | ||
3578 | static void | |
3579 | create_exception_master_breakpoint (void) | |
3580 | { | |
3581 | for (objfile *obj : current_program_space->objfiles ()) | |
3582 | { | |
3583 | /* Skip separate debug object. */ | |
3584 | if (obj->separate_debug_objfile_backlink) | |
3585 | continue; | |
3586 | ||
3587 | /* Try a probe kind breakpoint. */ | |
3588 | if (create_exception_master_breakpoint_probe (obj)) | |
3589 | continue; | |
3590 | ||
7c6944ab TV |
3591 | /* Iterate over main and separate debug objects and try an |
3592 | _Unwind_DebugHook kind breakpoint. */ | |
3593 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3594 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3595 | break; |
186c406b | 3596 | } |
186c406b TT |
3597 | } |
3598 | ||
9ef9e6a6 KS |
3599 | /* Does B have a location spec? */ |
3600 | ||
3601 | static int | |
3602 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3603 | { | |
d28cd78a | 3604 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3605 | } |
3606 | ||
c906108c | 3607 | void |
fba45db2 | 3608 | update_breakpoints_after_exec (void) |
c906108c | 3609 | { |
25b22b0a PA |
3610 | /* We're about to delete breakpoints from GDB's lists. If the |
3611 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3612 | writing the breakpoints' "shadow contents" back into memory. The | |
3613 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3614 | do that. Instead, the target is responsible from marking | |
3615 | breakpoints out as soon as it detects an exec. We don't do that | |
3616 | here instead, because there may be other attempts to delete | |
3617 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3618 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3619 | if (bploc->pspace == current_program_space) |
3620 | gdb_assert (!bploc->inserted); | |
c906108c | 3621 | |
1428b37a | 3622 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3623 | { |
3624 | if (b->pspace != current_program_space) | |
c5aa993b | 3625 | continue; |
c906108c | 3626 | |
01add95b SM |
3627 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3628 | if (b->type == bp_shlib_event) | |
3629 | { | |
3630 | delete_breakpoint (b); | |
3631 | continue; | |
3632 | } | |
4efc6507 | 3633 | |
01add95b SM |
3634 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3635 | if (b->type == bp_jit_event) | |
3636 | { | |
3637 | delete_breakpoint (b); | |
3638 | continue; | |
3639 | } | |
c4093a6a | 3640 | |
01add95b SM |
3641 | /* Thread event breakpoints must be set anew after an exec(), |
3642 | as must overlay event and longjmp master breakpoints. */ | |
3643 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3644 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3645 | || b->type == bp_exception_master) | |
3646 | { | |
3647 | delete_breakpoint (b); | |
3648 | continue; | |
3649 | } | |
c5aa993b | 3650 | |
01add95b SM |
3651 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3652 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3653 | { | |
3654 | delete_breakpoint (b); | |
3655 | continue; | |
3656 | } | |
7c16b83e | 3657 | |
01add95b SM |
3658 | /* Just like single-step breakpoints. */ |
3659 | if (b->type == bp_single_step) | |
3660 | { | |
3661 | delete_breakpoint (b); | |
3662 | continue; | |
3663 | } | |
611c83ae | 3664 | |
01add95b SM |
3665 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3666 | after an exec. */ | |
3667 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3668 | || b->type == bp_longjmp_call_dummy | |
3669 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3670 | { | |
3671 | delete_breakpoint (b); | |
3672 | continue; | |
3673 | } | |
ce78b96d | 3674 | |
01add95b SM |
3675 | if (b->type == bp_catchpoint) |
3676 | { | |
3677 | /* For now, none of the bp_catchpoint breakpoints need to | |
3678 | do anything at this point. In the future, if some of | |
3679 | the catchpoints need to something, we will need to add | |
3680 | a new method, and call this method from here. */ | |
3681 | continue; | |
3682 | } | |
c5aa993b | 3683 | |
01add95b SM |
3684 | /* bp_finish is a special case. The only way we ought to be able |
3685 | to see one of these when an exec() has happened, is if the user | |
3686 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3687 | carries them to the call-site of the current callee, by setting | |
3688 | a temporary bp there and resuming. But in this case, the finish | |
3689 | will carry them entirely through the vfork & exec. | |
3690 | ||
3691 | We don't want to allow a bp_finish to remain inserted now. But | |
3692 | we can't safely delete it, 'cause finish_command has a handle to | |
3693 | the bp on a bpstat, and will later want to delete it. There's a | |
3694 | chance (and I've seen it happen) that if we delete the bp_finish | |
3695 | here, that its storage will get reused by the time finish_command | |
3696 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3697 | We really must allow finish_command to delete a bp_finish. | |
3698 | ||
3699 | In the absence of a general solution for the "how do we know | |
3700 | it's safe to delete something others may have handles to?" | |
3701 | problem, what we'll do here is just uninsert the bp_finish, and | |
3702 | let finish_command delete it. | |
3703 | ||
3704 | (We know the bp_finish is "doomed" in the sense that it's | |
3705 | momentary, and will be deleted as soon as finish_command sees | |
3706 | the inferior stopped. So it doesn't matter that the bp's | |
3707 | address is probably bogus in the new a.out, unlike e.g., the | |
3708 | solib breakpoints.) */ | |
3709 | ||
3710 | if (b->type == bp_finish) | |
3711 | { | |
3712 | continue; | |
3713 | } | |
3714 | ||
3715 | /* Without a symbolic address, we have little hope of the | |
3716 | pre-exec() address meaning the same thing in the post-exec() | |
3717 | a.out. */ | |
3718 | if (breakpoint_event_location_empty_p (b)) | |
3719 | { | |
3720 | delete_breakpoint (b); | |
3721 | continue; | |
3722 | } | |
3723 | } | |
c906108c SS |
3724 | } |
3725 | ||
3726 | int | |
d80ee84f | 3727 | detach_breakpoints (ptid_t ptid) |
c906108c | 3728 | { |
3a1bae8e | 3729 | int val = 0; |
2989a365 | 3730 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3731 | struct inferior *inf = current_inferior (); |
c5aa993b | 3732 | |
e99b03dc | 3733 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3734 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3735 | |
6c95b8df | 3736 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3737 | inferior_ptid = ptid; |
48d7020b | 3738 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3739 | { |
3740 | if (bl->pspace != inf->pspace) | |
3741 | continue; | |
3742 | ||
3743 | /* This function must physically remove breakpoints locations | |
3744 | from the specified ptid, without modifying the breakpoint | |
3745 | package's state. Locations of type bp_loc_other are only | |
3746 | maintained at GDB side. So, there is no need to remove | |
3747 | these bp_loc_other locations. Moreover, removing these | |
3748 | would modify the breakpoint package's state. */ | |
3749 | if (bl->loc_type == bp_loc_other) | |
3750 | continue; | |
3751 | ||
3752 | if (bl->inserted) | |
3753 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3754 | } | |
d03285ec | 3755 | |
3a1bae8e | 3756 | return val; |
c906108c SS |
3757 | } |
3758 | ||
35df4500 | 3759 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3760 | Note that this is used to detach breakpoints from a child fork. |
3761 | When we get here, the child isn't in the inferior list, and neither | |
3762 | do we have objects to represent its address space --- we should | |
35df4500 | 3763 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3764 | |
c906108c | 3765 | static int |
b2b6a7da | 3766 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3767 | { |
3768 | int val; | |
c5aa993b | 3769 | |
35df4500 TJB |
3770 | /* BL is never in moribund_locations by our callers. */ |
3771 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3772 | |
74960c60 VP |
3773 | /* The type of none suggests that owner is actually deleted. |
3774 | This should not ever happen. */ | |
35df4500 | 3775 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3776 | |
35df4500 TJB |
3777 | if (bl->loc_type == bp_loc_software_breakpoint |
3778 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3779 | { |
c02f5703 MS |
3780 | /* "Normal" instruction breakpoint: either the standard |
3781 | trap-instruction bp (bp_breakpoint), or a | |
3782 | bp_hardware_breakpoint. */ | |
3783 | ||
3784 | /* First check to see if we have to handle an overlay. */ | |
3785 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3786 | || bl->section == NULL |
3787 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3788 | { |
3789 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3790 | |
3791 | /* If we're trying to uninsert a memory breakpoint that we | |
3792 | know is set in a dynamic object that is marked | |
3793 | shlib_disabled, then either the dynamic object was | |
3794 | removed with "remove-symbol-file" or with | |
3795 | "nosharedlibrary". In the former case, we don't know | |
3796 | whether another dynamic object might have loaded over the | |
3797 | breakpoint's address -- the user might well let us know | |
3798 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3799 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3800 | list of dynamically loaded objects). If we have the |
3801 | breakpoint's shadow memory, that is, this is a software | |
3802 | breakpoint managed by GDB, check whether the breakpoint | |
3803 | is still inserted in memory, to avoid overwriting wrong | |
3804 | code with stale saved shadow contents. Note that HW | |
3805 | breakpoints don't have shadow memory, as they're | |
3806 | implemented using a mechanism that is not dependent on | |
3807 | being able to modify the target's memory, and as such | |
3808 | they should always be removed. */ | |
3809 | if (bl->shlib_disabled | |
3810 | && bl->target_info.shadow_len != 0 | |
3811 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3812 | val = 0; | |
3813 | else | |
73971819 | 3814 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3815 | } |
c906108c SS |
3816 | else |
3817 | { | |
4a64f543 | 3818 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3819 | Did we set a breakpoint at the LMA? */ |
3820 | if (!overlay_events_enabled) | |
3821 | { | |
3822 | /* Yes -- overlay event support is not active, so we | |
3823 | should have set a breakpoint at the LMA. Remove it. | |
3824 | */ | |
c02f5703 MS |
3825 | /* Ignore any failures: if the LMA is in ROM, we will |
3826 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3827 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3828 | target_remove_hw_breakpoint (bl->gdbarch, | |
3829 | &bl->overlay_target_info); | |
c02f5703 | 3830 | else |
35df4500 | 3831 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3832 | &bl->overlay_target_info, |
3833 | reason); | |
c02f5703 MS |
3834 | } |
3835 | /* Did we set a breakpoint at the VMA? | |
3836 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3837 | if (bl->inserted) |
c906108c | 3838 | { |
c02f5703 MS |
3839 | /* Yes -- remove it. Previously we did not bother to |
3840 | remove the breakpoint if the section had been | |
3841 | unmapped, but let's not rely on that being safe. We | |
3842 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3843 | |
3844 | /* However, we should remove *software* breakpoints only | |
3845 | if the section is still mapped, or else we overwrite | |
3846 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3847 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3848 | || section_is_mapped (bl->section)) | |
73971819 | 3849 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3850 | else |
3851 | val = 0; | |
c906108c | 3852 | } |
c02f5703 MS |
3853 | else |
3854 | { | |
3855 | /* No -- not inserted, so no need to remove. No error. */ | |
3856 | val = 0; | |
3857 | } | |
c906108c | 3858 | } |
879d1e6b | 3859 | |
08351840 PA |
3860 | /* In some cases, we might not be able to remove a breakpoint in |
3861 | a shared library that has already been removed, but we have | |
3862 | not yet processed the shlib unload event. Similarly for an | |
3863 | unloaded add-symbol-file object - the user might not yet have | |
3864 | had the chance to remove-symbol-file it. shlib_disabled will | |
3865 | be set if the library/object has already been removed, but | |
3866 | the breakpoint hasn't been uninserted yet, e.g., after | |
3867 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3868 | always-inserted mode. */ | |
076855f9 | 3869 | if (val |
08351840 PA |
3870 | && (bl->loc_type == bp_loc_software_breakpoint |
3871 | && (bl->shlib_disabled | |
3872 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3873 | || shared_objfile_contains_address_p (bl->pspace, |
3874 | bl->address)))) | |
879d1e6b UW |
3875 | val = 0; |
3876 | ||
c906108c SS |
3877 | if (val) |
3878 | return val; | |
b2b6a7da | 3879 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3880 | } |
35df4500 | 3881 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3882 | { |
77b06cd7 TJB |
3883 | gdb_assert (bl->owner->ops != NULL |
3884 | && bl->owner->ops->remove_location != NULL); | |
3885 | ||
b2b6a7da | 3886 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3887 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3888 | |
c906108c | 3889 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3890 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3891 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3892 | bl->owner->number); |
c906108c | 3893 | } |
35df4500 | 3894 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
3895 | && breakpoint_enabled (bl->owner) |
3896 | && !bl->duplicate) | |
ce78b96d | 3897 | { |
77b06cd7 TJB |
3898 | gdb_assert (bl->owner->ops != NULL |
3899 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3900 | |
73971819 | 3901 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3902 | if (val) |
3903 | return val; | |
77b06cd7 | 3904 | |
b2b6a7da | 3905 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3906 | } |
c906108c SS |
3907 | |
3908 | return 0; | |
3909 | } | |
3910 | ||
6c95b8df | 3911 | static int |
834c0d03 | 3912 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3913 | { |
35df4500 TJB |
3914 | /* BL is never in moribund_locations by our callers. */ |
3915 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3916 | |
6c95b8df PA |
3917 | /* The type of none suggests that owner is actually deleted. |
3918 | This should not ever happen. */ | |
35df4500 | 3919 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3920 | |
5ed8105e | 3921 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3922 | |
35df4500 | 3923 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3924 | |
5ed8105e | 3925 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3926 | } |
3927 | ||
c906108c SS |
3928 | /* Clear the "inserted" flag in all breakpoints. */ |
3929 | ||
25b22b0a | 3930 | void |
fba45db2 | 3931 | mark_breakpoints_out (void) |
c906108c | 3932 | { |
48d7020b | 3933 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 3934 | if (bl->pspace == current_program_space) |
35df4500 | 3935 | bl->inserted = 0; |
c906108c SS |
3936 | } |
3937 | ||
53a5351d JM |
3938 | /* Clear the "inserted" flag in all breakpoints and delete any |
3939 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3940 | |
3941 | Plus other such housekeeping that has to be done for breakpoints | |
3942 | between runs. | |
3943 | ||
53a5351d JM |
3944 | Note: this function gets called at the end of a run (by |
3945 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3946 | init_wait_for_inferior). */ |
c906108c SS |
3947 | |
3948 | ||
3949 | ||
3950 | void | |
fba45db2 | 3951 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3952 | { |
6c95b8df | 3953 | struct program_space *pspace = current_program_space; |
c906108c | 3954 | |
50c71eaf PA |
3955 | /* If breakpoint locations are shared across processes, then there's |
3956 | nothing to do. */ | |
f5656ead | 3957 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3958 | return; |
3959 | ||
1a853c52 | 3960 | mark_breakpoints_out (); |
075f6582 | 3961 | |
1428b37a | 3962 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3963 | { |
3964 | if (b->loc && b->loc->pspace != pspace) | |
3965 | continue; | |
6c95b8df | 3966 | |
01add95b SM |
3967 | switch (b->type) |
3968 | { | |
3969 | case bp_call_dummy: | |
3970 | case bp_longjmp_call_dummy: | |
c906108c | 3971 | |
01add95b SM |
3972 | /* If the call dummy breakpoint is at the entry point it will |
3973 | cause problems when the inferior is rerun, so we better get | |
3974 | rid of it. */ | |
ab92d69b | 3975 | |
01add95b | 3976 | case bp_watchpoint_scope: |
ab92d69b | 3977 | |
01add95b | 3978 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 3979 | |
01add95b | 3980 | case bp_shlib_event: |
ab92d69b | 3981 | |
01add95b SM |
3982 | /* Also remove solib event breakpoints. Their addresses may |
3983 | have changed since the last time we ran the program. | |
3984 | Actually we may now be debugging against different target; | |
3985 | and so the solib backend that installed this breakpoint may | |
3986 | not be used in by the target. E.g., | |
ab92d69b | 3987 | |
01add95b SM |
3988 | (gdb) file prog-linux |
3989 | (gdb) run # native linux target | |
3990 | ... | |
3991 | (gdb) kill | |
3992 | (gdb) file prog-win.exe | |
3993 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3994 | */ | |
c906108c | 3995 | |
01add95b | 3996 | case bp_step_resume: |
f59f708a | 3997 | |
01add95b | 3998 | /* Also remove step-resume breakpoints. */ |
f59f708a | 3999 | |
01add95b | 4000 | case bp_single_step: |
7c16b83e | 4001 | |
01add95b | 4002 | /* Also remove single-step breakpoints. */ |
7c16b83e | 4003 | |
01add95b SM |
4004 | delete_breakpoint (b); |
4005 | break; | |
c906108c | 4006 | |
01add95b SM |
4007 | case bp_watchpoint: |
4008 | case bp_hardware_watchpoint: | |
4009 | case bp_read_watchpoint: | |
4010 | case bp_access_watchpoint: | |
4011 | { | |
4012 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4013 | |
01add95b SM |
4014 | /* Likewise for watchpoints on local expressions. */ |
4015 | if (w->exp_valid_block != NULL) | |
4016 | delete_breakpoint (b); | |
4017 | else | |
4018 | { | |
4019 | /* Get rid of existing locations, which are no longer | |
4020 | valid. New ones will be created in | |
4021 | update_watchpoint, when the inferior is restarted. | |
4022 | The next update_global_location_list call will | |
4023 | garbage collect them. */ | |
4024 | b->loc = NULL; | |
4025 | ||
4026 | if (context == inf_starting) | |
4027 | { | |
4028 | /* Reset val field to force reread of starting value in | |
4029 | insert_breakpoints. */ | |
4030 | w->val.reset (nullptr); | |
4031 | w->val_valid = false; | |
4032 | } | |
4033 | } | |
4034 | } | |
4035 | break; | |
4036 | default: | |
4037 | break; | |
3a5c3e22 | 4038 | } |
01add95b | 4039 | } |
1c5cfe86 PA |
4040 | |
4041 | /* Get rid of the moribund locations. */ | |
1123588c | 4042 | for (bp_location *bl : moribund_locations) |
35df4500 | 4043 | decref_bp_location (&bl); |
1123588c | 4044 | moribund_locations.clear (); |
c906108c SS |
4045 | } |
4046 | ||
6c95b8df PA |
4047 | /* These functions concern about actual breakpoints inserted in the |
4048 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4049 | we need to hop over the bkpt --- so we check for address space | |
4050 | match, not program space. */ | |
4051 | ||
c2c6d25f JM |
4052 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4053 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4054 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4055 | permanent breakpoint. | |
4056 | - When continuing from a location with an ordinary breakpoint, we | |
4057 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4058 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4059 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4060 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4061 | |
c2c6d25f | 4062 | enum breakpoint_here |
accd0bcd | 4063 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4064 | { |
c2c6d25f | 4065 | int any_breakpoint_here = 0; |
c906108c | 4066 | |
48d7020b | 4067 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4068 | { |
35df4500 TJB |
4069 | if (bl->loc_type != bp_loc_software_breakpoint |
4070 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4071 | continue; |
4072 | ||
f1310107 | 4073 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4074 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4075 | || bl->permanent) |
f1310107 | 4076 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4077 | { |
4078 | if (overlay_debugging | |
35df4500 TJB |
4079 | && section_is_overlay (bl->section) |
4080 | && !section_is_mapped (bl->section)) | |
075f6582 | 4081 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4082 | else if (bl->permanent) |
075f6582 DJ |
4083 | return permanent_breakpoint_here; |
4084 | else | |
4085 | any_breakpoint_here = 1; | |
4086 | } | |
4087 | } | |
c906108c | 4088 | |
f486487f | 4089 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4090 | } |
4091 | ||
d35ae833 PA |
4092 | /* See breakpoint.h. */ |
4093 | ||
4094 | int | |
accd0bcd | 4095 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4096 | CORE_ADDR addr, ULONGEST len) |
4097 | { | |
48d7020b | 4098 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4099 | { |
4100 | if (bl->loc_type != bp_loc_software_breakpoint | |
4101 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4102 | continue; | |
4103 | ||
4104 | if ((breakpoint_enabled (bl->owner) | |
4105 | || bl->permanent) | |
4106 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4107 | addr, len)) | |
4108 | { | |
4109 | if (overlay_debugging | |
4110 | && section_is_overlay (bl->section) | |
4111 | && !section_is_mapped (bl->section)) | |
4112 | { | |
4113 | /* Unmapped overlay -- can't be a match. */ | |
4114 | continue; | |
4115 | } | |
4116 | ||
4117 | return 1; | |
4118 | } | |
4119 | } | |
4120 | ||
4121 | return 0; | |
4122 | } | |
4123 | ||
1c5cfe86 PA |
4124 | /* Return true if there's a moribund breakpoint at PC. */ |
4125 | ||
4126 | int | |
accd0bcd | 4127 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4128 | { |
1123588c | 4129 | for (bp_location *loc : moribund_locations) |
f1310107 | 4130 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4131 | return 1; |
4132 | ||
4133 | return 0; | |
4134 | } | |
c2c6d25f | 4135 | |
f7ce857f PA |
4136 | /* Returns non-zero iff BL is inserted at PC, in address space |
4137 | ASPACE. */ | |
4138 | ||
4139 | static int | |
4140 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4141 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4142 | { |
4143 | if (bl->inserted | |
4144 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4145 | aspace, pc)) | |
4146 | { | |
4147 | if (overlay_debugging | |
4148 | && section_is_overlay (bl->section) | |
4149 | && !section_is_mapped (bl->section)) | |
4150 | return 0; /* unmapped overlay -- can't be a match */ | |
4151 | else | |
4152 | return 1; | |
4153 | } | |
4154 | return 0; | |
4155 | } | |
4156 | ||
a1fd2fa5 | 4157 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4158 | |
4159 | int | |
accd0bcd | 4160 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4161 | { |
e0d9a270 | 4162 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4163 | { |
35df4500 TJB |
4164 | if (bl->loc_type != bp_loc_software_breakpoint |
4165 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4166 | continue; |
4167 | ||
f7ce857f PA |
4168 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4169 | return 1; | |
c5aa993b | 4170 | } |
c36b740a VP |
4171 | return 0; |
4172 | } | |
4173 | ||
a1fd2fa5 PA |
4174 | /* This function returns non-zero iff there is a software breakpoint |
4175 | inserted at PC. */ | |
c36b740a VP |
4176 | |
4177 | int | |
accd0bcd | 4178 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4179 | CORE_ADDR pc) |
4fa8626c | 4180 | { |
e0d9a270 | 4181 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4182 | { |
35df4500 | 4183 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4184 | continue; |
4185 | ||
f7ce857f PA |
4186 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4187 | return 1; | |
4fa8626c DJ |
4188 | } |
4189 | ||
4190 | return 0; | |
9c02b525 PA |
4191 | } |
4192 | ||
4193 | /* See breakpoint.h. */ | |
4194 | ||
4195 | int | |
accd0bcd | 4196 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4197 | CORE_ADDR pc) |
4198 | { | |
e0d9a270 | 4199 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4200 | { |
9c02b525 PA |
4201 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4202 | continue; | |
4203 | ||
4204 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4205 | return 1; | |
4206 | } | |
4207 | ||
4208 | return 0; | |
4fa8626c DJ |
4209 | } |
4210 | ||
9093389c | 4211 | int |
accd0bcd | 4212 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4213 | CORE_ADDR addr, ULONGEST len) |
4214 | { | |
43892fdf | 4215 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4216 | { |
9093389c PA |
4217 | if (bpt->type != bp_hardware_watchpoint |
4218 | && bpt->type != bp_access_watchpoint) | |
4219 | continue; | |
4220 | ||
4221 | if (!breakpoint_enabled (bpt)) | |
4222 | continue; | |
4223 | ||
40cb8ca5 | 4224 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4225 | if (loc->pspace->aspace == aspace && loc->inserted) |
4226 | { | |
4227 | CORE_ADDR l, h; | |
4228 | ||
4229 | /* Check for intersection. */ | |
768adc05 PA |
4230 | l = std::max<CORE_ADDR> (loc->address, addr); |
4231 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4232 | if (l < h) |
4233 | return 1; | |
4234 | } | |
4235 | } | |
4236 | return 0; | |
4237 | } | |
c5aa993b | 4238 | |
f2478a7e | 4239 | /* See breakpoint.h. */ |
c906108c | 4240 | |
f2478a7e SM |
4241 | bool |
4242 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4243 | { |
f2478a7e | 4244 | return (b->type == bp_catchpoint); |
c906108c SS |
4245 | } |
4246 | ||
c906108c SS |
4247 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4248 | Also free any storage that is part of a bpstat. */ | |
4249 | ||
4250 | void | |
fba45db2 | 4251 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4252 | { |
4253 | bpstat p; | |
4254 | bpstat q; | |
4255 | ||
4256 | if (bsp == 0) | |
4257 | return; | |
4258 | p = *bsp; | |
4259 | while (p != NULL) | |
4260 | { | |
4261 | q = p->next; | |
04afa70c | 4262 | delete p; |
c906108c SS |
4263 | p = q; |
4264 | } | |
4265 | *bsp = NULL; | |
4266 | } | |
4267 | ||
04afa70c TT |
4268 | bpstats::bpstats (const bpstats &other) |
4269 | : next (NULL), | |
4270 | bp_location_at (other.bp_location_at), | |
4271 | breakpoint_at (other.breakpoint_at), | |
4272 | commands (other.commands), | |
04afa70c TT |
4273 | print (other.print), |
4274 | stop (other.stop), | |
4275 | print_it (other.print_it) | |
4276 | { | |
850645cf TT |
4277 | if (other.old_val != NULL) |
4278 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4279 | } |
4280 | ||
c906108c SS |
4281 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4282 | is part of the bpstat is copied as well. */ | |
4283 | ||
4284 | bpstat | |
fba45db2 | 4285 | bpstat_copy (bpstat bs) |
c906108c SS |
4286 | { |
4287 | bpstat p = NULL; | |
4288 | bpstat tmp; | |
4289 | bpstat retval = NULL; | |
4290 | ||
4291 | if (bs == NULL) | |
4292 | return bs; | |
4293 | ||
4294 | for (; bs != NULL; bs = bs->next) | |
4295 | { | |
04afa70c | 4296 | tmp = new bpstats (*bs); |
31cc81e9 | 4297 | |
c906108c SS |
4298 | if (p == NULL) |
4299 | /* This is the first thing in the chain. */ | |
4300 | retval = tmp; | |
4301 | else | |
4302 | p->next = tmp; | |
4303 | p = tmp; | |
4304 | } | |
4305 | p->next = NULL; | |
4306 | return retval; | |
4307 | } | |
4308 | ||
4a64f543 | 4309 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4310 | |
4311 | bpstat | |
fba45db2 | 4312 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4313 | { |
c5aa993b JM |
4314 | if (bsp == NULL) |
4315 | return NULL; | |
c906108c | 4316 | |
c5aa993b JM |
4317 | for (; bsp != NULL; bsp = bsp->next) |
4318 | { | |
f431efe5 | 4319 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4320 | return bsp; |
4321 | } | |
c906108c SS |
4322 | return NULL; |
4323 | } | |
4324 | ||
ab04a2af TT |
4325 | /* See breakpoint.h. */ |
4326 | ||
4c462cb0 | 4327 | bool |
427cd150 | 4328 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4329 | { |
ab04a2af TT |
4330 | for (; bsp != NULL; bsp = bsp->next) |
4331 | { | |
427cd150 TT |
4332 | if (bsp->breakpoint_at == NULL) |
4333 | { | |
4334 | /* A moribund location can never explain a signal other than | |
4335 | GDB_SIGNAL_TRAP. */ | |
4336 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4337 | return true; |
427cd150 TT |
4338 | } |
4339 | else | |
47591c29 PA |
4340 | { |
4341 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4342 | sig)) | |
4c462cb0 | 4343 | return true; |
47591c29 | 4344 | } |
ab04a2af TT |
4345 | } |
4346 | ||
4c462cb0 | 4347 | return false; |
ab04a2af TT |
4348 | } |
4349 | ||
4a64f543 MS |
4350 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4351 | stopped at. *BSP upon return is a bpstat which points to the | |
4352 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4353 | good for anything but further calls to bpstat_num). | |
4354 | ||
8671a17b PA |
4355 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4356 | Return -1 if stopped at a breakpoint that has been deleted since | |
4357 | we set it. | |
4358 | Return 1 otherwise. */ | |
c906108c SS |
4359 | |
4360 | int | |
8671a17b | 4361 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4362 | { |
4363 | struct breakpoint *b; | |
4364 | ||
4365 | if ((*bsp) == NULL) | |
4366 | return 0; /* No more breakpoint values */ | |
8671a17b | 4367 | |
4a64f543 MS |
4368 | /* We assume we'll never have several bpstats that correspond to a |
4369 | single breakpoint -- otherwise, this function might return the | |
4370 | same number more than once and this will look ugly. */ | |
f431efe5 | 4371 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4372 | *bsp = (*bsp)->next; |
4373 | if (b == NULL) | |
4374 | return -1; /* breakpoint that's been deleted since */ | |
4375 | ||
4376 | *num = b->number; /* We have its number */ | |
4377 | return 1; | |
c906108c SS |
4378 | } |
4379 | ||
e93ca019 | 4380 | /* See breakpoint.h. */ |
c906108c SS |
4381 | |
4382 | void | |
e93ca019 | 4383 | bpstat_clear_actions (void) |
c906108c | 4384 | { |
e93ca019 JK |
4385 | bpstat bs; |
4386 | ||
00431a78 | 4387 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4388 | return; |
4389 | ||
00431a78 | 4390 | thread_info *tp = inferior_thread (); |
e93ca019 | 4391 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4392 | { |
d1b0a7bf | 4393 | bs->commands = NULL; |
850645cf | 4394 | bs->old_val.reset (nullptr); |
c906108c SS |
4395 | } |
4396 | } | |
4397 | ||
f3b1572e PA |
4398 | /* Called when a command is about to proceed the inferior. */ |
4399 | ||
4400 | static void | |
4401 | breakpoint_about_to_proceed (void) | |
4402 | { | |
d7e15655 | 4403 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4404 | { |
4405 | struct thread_info *tp = inferior_thread (); | |
4406 | ||
4407 | /* Allow inferior function calls in breakpoint commands to not | |
4408 | interrupt the command list. When the call finishes | |
4409 | successfully, the inferior will be standing at the same | |
4410 | breakpoint as if nothing happened. */ | |
16c381f0 | 4411 | if (tp->control.in_infcall) |
f3b1572e PA |
4412 | return; |
4413 | } | |
4414 | ||
4415 | breakpoint_proceeded = 1; | |
4416 | } | |
4417 | ||
abf85f46 JK |
4418 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4419 | or its equivalent. */ | |
4420 | ||
4421 | static int | |
4422 | command_line_is_silent (struct command_line *cmd) | |
4423 | { | |
4f45d445 | 4424 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4425 | } |
4426 | ||
4a64f543 MS |
4427 | /* Execute all the commands associated with all the breakpoints at |
4428 | this location. Any of these commands could cause the process to | |
4429 | proceed beyond this point, etc. We look out for such changes by | |
4430 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4431 | |
347bddb7 PA |
4432 | Returns true if a breakpoint command resumed the inferior. In that |
4433 | case, it is the caller's responsibility to recall it again with the | |
4434 | bpstat of the current thread. */ | |
4435 | ||
4436 | static int | |
4437 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4438 | { |
4439 | bpstat bs; | |
347bddb7 | 4440 | int again = 0; |
c906108c SS |
4441 | |
4442 | /* Avoid endless recursion if a `source' command is contained | |
4443 | in bs->commands. */ | |
4444 | if (executing_breakpoint_commands) | |
347bddb7 | 4445 | return 0; |
c906108c | 4446 | |
81b1e71c TT |
4447 | scoped_restore save_executing |
4448 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4449 | |
1ac32117 | 4450 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4451 | |
4a64f543 | 4452 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4453 | bs = *bsp; |
4454 | ||
4455 | breakpoint_proceeded = 0; | |
4456 | for (; bs != NULL; bs = bs->next) | |
4457 | { | |
d1b0a7bf | 4458 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4459 | |
4460 | /* Take ownership of the BSP's command tree, if it has one. | |
4461 | ||
dda83cd7 SM |
4462 | The command tree could legitimately contain commands like |
4463 | 'step' and 'next', which call clear_proceed_status, which | |
4464 | frees stop_bpstat's command tree. To make sure this doesn't | |
4465 | free the tree we're executing out from under us, we need to | |
4466 | take ownership of the tree ourselves. Since a given bpstat's | |
4467 | commands are only executed once, we don't need to copy it; we | |
4468 | can clear the pointer in the bpstat, and make sure we free | |
4469 | the tree when we're done. */ | |
d1b0a7bf | 4470 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4471 | bs->commands = NULL; |
d1b0a7bf TT |
4472 | if (ccmd != NULL) |
4473 | cmd = ccmd.get (); | |
abf85f46 JK |
4474 | if (command_line_is_silent (cmd)) |
4475 | { | |
4476 | /* The action has been already done by bpstat_stop_status. */ | |
4477 | cmd = cmd->next; | |
4478 | } | |
6c50ab1c | 4479 | |
c906108c SS |
4480 | while (cmd != NULL) |
4481 | { | |
4482 | execute_control_command (cmd); | |
4483 | ||
4484 | if (breakpoint_proceeded) | |
4485 | break; | |
4486 | else | |
4487 | cmd = cmd->next; | |
4488 | } | |
6c50ab1c | 4489 | |
c906108c | 4490 | if (breakpoint_proceeded) |
32c1e744 | 4491 | { |
cb814510 | 4492 | if (current_ui->async) |
347bddb7 PA |
4493 | /* If we are in async mode, then the target might be still |
4494 | running, not stopped at any breakpoint, so nothing for | |
4495 | us to do here -- just return to the event loop. */ | |
4496 | ; | |
32c1e744 VP |
4497 | else |
4498 | /* In sync mode, when execute_control_command returns | |
4499 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4500 | Breakpoint commands for that stop were not run, since |
4501 | execute_command does not run breakpoint commands -- | |
4502 | only command_line_handler does, but that one is not | |
4503 | involved in execution of breakpoint commands. So, we | |
4504 | can now execute breakpoint commands. It should be | |
4505 | noted that making execute_command do bpstat actions is | |
4506 | not an option -- in this case we'll have recursive | |
4507 | invocation of bpstat for each breakpoint with a | |
4508 | command, and can easily blow up GDB stack. Instead, we | |
4509 | return true, which will trigger the caller to recall us | |
4510 | with the new stop_bpstat. */ | |
4511 | again = 1; | |
4512 | break; | |
32c1e744 | 4513 | } |
c906108c | 4514 | } |
347bddb7 PA |
4515 | return again; |
4516 | } | |
4517 | ||
00431a78 PA |
4518 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4519 | one, is alive and has execution. Return NULL otherwise. */ | |
4520 | ||
4521 | static thread_info * | |
4522 | get_bpstat_thread () | |
4523 | { | |
55f6301a | 4524 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4525 | return NULL; |
4526 | ||
4527 | thread_info *tp = inferior_thread (); | |
4528 | if (tp->state == THREAD_EXITED || tp->executing) | |
4529 | return NULL; | |
4530 | return tp; | |
4531 | } | |
4532 | ||
347bddb7 PA |
4533 | void |
4534 | bpstat_do_actions (void) | |
4535 | { | |
694c6bf5 | 4536 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4537 | thread_info *tp; |
353d1d73 | 4538 | |
347bddb7 | 4539 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4540 | while ((tp = get_bpstat_thread ()) != NULL) |
4541 | { | |
4542 | /* Since in sync mode, bpstat_do_actions may resume the | |
4543 | inferior, and only return when it is stopped at the next | |
4544 | breakpoint, we keep doing breakpoint actions until it returns | |
4545 | false to indicate the inferior was not resumed. */ | |
4546 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4547 | break; | |
4548 | } | |
353d1d73 | 4549 | |
694c6bf5 | 4550 | cleanup_if_error.release (); |
c906108c SS |
4551 | } |
4552 | ||
fa4727a6 DJ |
4553 | /* Print out the (old or new) value associated with a watchpoint. */ |
4554 | ||
4555 | static void | |
4556 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4557 | { | |
4558 | if (val == NULL) | |
7f6aba03 | 4559 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4560 | else |
79a45b7d TT |
4561 | { |
4562 | struct value_print_options opts; | |
4563 | get_user_print_options (&opts); | |
4564 | value_print (val, stream, &opts); | |
4565 | } | |
fa4727a6 DJ |
4566 | } |
4567 | ||
f303dbd6 PA |
4568 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4569 | debugging multiple threads. */ | |
4570 | ||
4571 | void | |
4572 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4573 | { | |
112e8700 | 4574 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4575 | return; |
4576 | ||
112e8700 | 4577 | uiout->text ("\n"); |
f303dbd6 PA |
4578 | |
4579 | if (show_thread_that_caused_stop ()) | |
4580 | { | |
4581 | const char *name; | |
4582 | struct thread_info *thr = inferior_thread (); | |
4583 | ||
112e8700 | 4584 | uiout->text ("Thread "); |
33eca680 | 4585 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4586 | |
4587 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4588 | if (name != NULL) | |
4589 | { | |
112e8700 | 4590 | uiout->text (" \""); |
33eca680 | 4591 | uiout->field_string ("name", name); |
112e8700 | 4592 | uiout->text ("\""); |
f303dbd6 PA |
4593 | } |
4594 | ||
112e8700 | 4595 | uiout->text (" hit "); |
f303dbd6 PA |
4596 | } |
4597 | } | |
4598 | ||
e514a9d6 | 4599 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4600 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4601 | 'print_it' in the bpstat structure. Under some circumstances we |
4602 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4603 | normal_stop(). */ |
e514a9d6 JM |
4604 | |
4605 | static enum print_stop_action | |
4606 | print_bp_stop_message (bpstat bs) | |
4607 | { | |
4608 | switch (bs->print_it) | |
4609 | { | |
4610 | case print_it_noop: | |
4a64f543 | 4611 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4612 | return PRINT_UNKNOWN; |
4613 | break; | |
4614 | ||
4615 | case print_it_done: | |
4616 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4617 | relevant messages. */ |
e514a9d6 JM |
4618 | return PRINT_SRC_AND_LOC; |
4619 | break; | |
4620 | ||
4621 | case print_it_normal: | |
4f8d1dc6 | 4622 | { |
f431efe5 PA |
4623 | struct breakpoint *b = bs->breakpoint_at; |
4624 | ||
1a6a67de TJB |
4625 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4626 | which has since been deleted. */ | |
4627 | if (b == NULL) | |
4628 | return PRINT_UNKNOWN; | |
4629 | ||
348d480f PA |
4630 | /* Normal case. Call the breakpoint's print_it method. */ |
4631 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4632 | } |
348d480f | 4633 | break; |
3086aeae | 4634 | |
e514a9d6 | 4635 | default: |
8e65ff28 | 4636 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4637 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4638 | break; |
c906108c | 4639 | } |
c906108c SS |
4640 | } |
4641 | ||
edcc5120 TT |
4642 | /* A helper function that prints a shared library stopped event. */ |
4643 | ||
4644 | static void | |
4645 | print_solib_event (int is_catchpoint) | |
4646 | { | |
6fb16ce6 | 4647 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4648 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4649 | |
4650 | if (!is_catchpoint) | |
4651 | { | |
4652 | if (any_added || any_deleted) | |
112e8700 | 4653 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4654 | else |
112e8700 SM |
4655 | current_uiout->text (_("Stopped due to shared library event (no " |
4656 | "libraries added or removed)\n")); | |
edcc5120 TT |
4657 | } |
4658 | ||
112e8700 SM |
4659 | if (current_uiout->is_mi_like_p ()) |
4660 | current_uiout->field_string ("reason", | |
4661 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4662 | |
4663 | if (any_deleted) | |
4664 | { | |
112e8700 | 4665 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4666 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4667 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4668 | { |
6fb16ce6 SM |
4669 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4670 | ||
edcc5120 | 4671 | if (ix > 0) |
112e8700 SM |
4672 | current_uiout->text (" "); |
4673 | current_uiout->field_string ("library", name); | |
4674 | current_uiout->text ("\n"); | |
edcc5120 | 4675 | } |
edcc5120 TT |
4676 | } |
4677 | ||
4678 | if (any_added) | |
4679 | { | |
112e8700 | 4680 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4681 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4682 | bool first = true; |
52941706 | 4683 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4684 | { |
bcb430e4 | 4685 | if (!first) |
112e8700 | 4686 | current_uiout->text (" "); |
bcb430e4 | 4687 | first = false; |
112e8700 SM |
4688 | current_uiout->field_string ("library", iter->so_name); |
4689 | current_uiout->text ("\n"); | |
edcc5120 | 4690 | } |
edcc5120 TT |
4691 | } |
4692 | } | |
4693 | ||
e514a9d6 JM |
4694 | /* Print a message indicating what happened. This is called from |
4695 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4696 | list - a list of the eventpoints that caused this stop. KIND is |
4697 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4698 | routine calls the generic print routine for printing a message |
4699 | about reasons for stopping. This will print (for example) the | |
4700 | "Breakpoint n," part of the output. The return value of this | |
4701 | routine is one of: | |
c906108c | 4702 | |
4a64f543 | 4703 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4704 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4705 | code to print the location. An example is |
c5aa993b JM |
4706 | "Breakpoint 1, " which should be followed by |
4707 | the location. | |
917317f4 | 4708 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4709 | to also print the location part of the message. |
4710 | An example is the catch/throw messages, which | |
4a64f543 | 4711 | don't require a location appended to the end. |
917317f4 | 4712 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4713 | further info to be printed. */ |
c906108c | 4714 | |
917317f4 | 4715 | enum print_stop_action |
36dfb11c | 4716 | bpstat_print (bpstat bs, int kind) |
c906108c | 4717 | { |
f486487f | 4718 | enum print_stop_action val; |
c5aa993b | 4719 | |
c906108c | 4720 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4721 | (Currently all watchpoints go on the bpstat whether hit or not. |
4722 | That probably could (should) be changed, provided care is taken | |
c906108c | 4723 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4724 | for (; bs; bs = bs->next) |
4725 | { | |
4726 | val = print_bp_stop_message (bs); | |
4727 | if (val == PRINT_SRC_ONLY | |
4728 | || val == PRINT_SRC_AND_LOC | |
4729 | || val == PRINT_NOTHING) | |
4730 | return val; | |
4731 | } | |
c906108c | 4732 | |
36dfb11c TT |
4733 | /* If we had hit a shared library event breakpoint, |
4734 | print_bp_stop_message would print out this message. If we hit an | |
4735 | OS-level shared library event, do the same thing. */ | |
4736 | if (kind == TARGET_WAITKIND_LOADED) | |
4737 | { | |
edcc5120 | 4738 | print_solib_event (0); |
36dfb11c TT |
4739 | return PRINT_NOTHING; |
4740 | } | |
4741 | ||
e514a9d6 | 4742 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4743 | with and nothing was printed. */ |
917317f4 | 4744 | return PRINT_UNKNOWN; |
c906108c SS |
4745 | } |
4746 | ||
bf469271 | 4747 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4748 | |
bf469271 PA |
4749 | static bool |
4750 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4751 | { |
278cd55f | 4752 | struct value *mark = value_mark (); |
bf469271 | 4753 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4754 | |
c906108c | 4755 | value_free_to_mark (mark); |
bf469271 | 4756 | return res; |
c906108c SS |
4757 | } |
4758 | ||
5760d0ab | 4759 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4760 | |
04afa70c TT |
4761 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4762 | : next (NULL), | |
b6433ede | 4763 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4764 | breakpoint_at (bl->owner), |
4765 | commands (NULL), | |
04afa70c TT |
4766 | print (0), |
4767 | stop (0), | |
4768 | print_it (print_it_normal) | |
c906108c | 4769 | { |
04afa70c TT |
4770 | **bs_link_pointer = this; |
4771 | *bs_link_pointer = &next; | |
4772 | } | |
4773 | ||
4774 | bpstats::bpstats () | |
4775 | : next (NULL), | |
04afa70c TT |
4776 | breakpoint_at (NULL), |
4777 | commands (NULL), | |
04afa70c TT |
4778 | print (0), |
4779 | stop (0), | |
4780 | print_it (print_it_normal) | |
4781 | { | |
c906108c SS |
4782 | } |
4783 | \f | |
d983da9c DJ |
4784 | /* The target has stopped with waitstatus WS. Check if any hardware |
4785 | watchpoints have triggered, according to the target. */ | |
4786 | ||
4787 | int | |
4788 | watchpoints_triggered (struct target_waitstatus *ws) | |
4789 | { | |
57810aa7 | 4790 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 4791 | CORE_ADDR addr; |
d983da9c DJ |
4792 | |
4793 | if (!stopped_by_watchpoint) | |
4794 | { | |
4795 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4796 | as not triggered. */ | |
43892fdf | 4797 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4798 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4799 | { |
4800 | struct watchpoint *w = (struct watchpoint *) b; | |
4801 | ||
4802 | w->watchpoint_triggered = watch_triggered_no; | |
4803 | } | |
d983da9c DJ |
4804 | |
4805 | return 0; | |
4806 | } | |
4807 | ||
328d42d8 | 4808 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
4809 | { |
4810 | /* We were stopped by a watchpoint, but we don't know where. | |
4811 | Mark all watchpoints as unknown. */ | |
43892fdf | 4812 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4813 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4814 | { |
4815 | struct watchpoint *w = (struct watchpoint *) b; | |
4816 | ||
4817 | w->watchpoint_triggered = watch_triggered_unknown; | |
4818 | } | |
d983da9c | 4819 | |
3c4797ba | 4820 | return 1; |
d983da9c DJ |
4821 | } |
4822 | ||
4823 | /* The target could report the data address. Mark watchpoints | |
4824 | affected by this data address as triggered, and all others as not | |
4825 | triggered. */ | |
4826 | ||
43892fdf | 4827 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4828 | if (is_hardware_watchpoint (b)) |
d983da9c | 4829 | { |
3a5c3e22 | 4830 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 4831 | |
3a5c3e22 | 4832 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 4833 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 4834 | { |
3a5c3e22 | 4835 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4836 | { |
3a5c3e22 PA |
4837 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4838 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4839 | |
4840 | if (newaddr == start) | |
4841 | { | |
3a5c3e22 | 4842 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4843 | break; |
4844 | } | |
4845 | } | |
4846 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
4847 | else if (target_watchpoint_addr_within_range |
4848 | (current_inferior ()->top_target (), addr, loc->address, | |
4849 | loc->length)) | |
9c06b0b4 | 4850 | { |
3a5c3e22 | 4851 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4852 | break; |
4853 | } | |
4854 | } | |
d983da9c DJ |
4855 | } |
4856 | ||
4857 | return 1; | |
4858 | } | |
4859 | ||
bf469271 PA |
4860 | /* Possible return values for watchpoint_check. */ |
4861 | enum wp_check_result | |
4862 | { | |
4863 | /* The watchpoint has been deleted. */ | |
4864 | WP_DELETED = 1, | |
4865 | ||
4866 | /* The value has changed. */ | |
4867 | WP_VALUE_CHANGED = 2, | |
4868 | ||
4869 | /* The value has not changed. */ | |
4870 | WP_VALUE_NOT_CHANGED = 3, | |
4871 | ||
4872 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4873 | WP_IGNORE = 4, | |
4874 | }; | |
c906108c SS |
4875 | |
4876 | #define BP_TEMPFLAG 1 | |
4877 | #define BP_HARDWAREFLAG 2 | |
4878 | ||
4a64f543 | 4879 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4880 | changed. */ |
553e4c11 | 4881 | |
bf469271 PA |
4882 | static wp_check_result |
4883 | watchpoint_check (bpstat bs) | |
c906108c | 4884 | { |
3a5c3e22 | 4885 | struct watchpoint *b; |
c906108c SS |
4886 | struct frame_info *fr; |
4887 | int within_current_scope; | |
4888 | ||
f431efe5 | 4889 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4890 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4891 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4892 | |
f6bc2008 PA |
4893 | /* If this is a local watchpoint, we only want to check if the |
4894 | watchpoint frame is in scope if the current thread is the thread | |
4895 | that was used to create the watchpoint. */ | |
4896 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4897 | return WP_IGNORE; |
f6bc2008 | 4898 | |
c906108c SS |
4899 | if (b->exp_valid_block == NULL) |
4900 | within_current_scope = 1; | |
4901 | else | |
4902 | { | |
edb3359d DJ |
4903 | struct frame_info *frame = get_current_frame (); |
4904 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4905 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4906 | ||
c9cf6e20 | 4907 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4908 | still in the function but the stack frame has already been |
4909 | invalidated. Since we can't rely on the values of local | |
4910 | variables after the stack has been destroyed, we are treating | |
4911 | the watchpoint in that state as `not changed' without further | |
4912 | checking. Don't mark watchpoints as changed if the current | |
4913 | frame is in an epilogue - even if they are in some other | |
4914 | frame, our view of the stack is likely to be wrong and | |
4915 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4916 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4917 | return WP_IGNORE; |
a0f49112 | 4918 | |
101dcfbe | 4919 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4920 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4921 | |
4922 | /* If we've gotten confused in the unwinder, we might have | |
4923 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4924 | if (within_current_scope) |
4925 | { | |
4926 | struct symbol *function; | |
4927 | ||
4928 | function = get_frame_function (fr); | |
4929 | if (function == NULL | |
4930 | || !contained_in (b->exp_valid_block, | |
4931 | SYMBOL_BLOCK_VALUE (function))) | |
4932 | within_current_scope = 0; | |
4933 | } | |
69fbadd5 | 4934 | |
edb3359d | 4935 | if (within_current_scope) |
c906108c SS |
4936 | /* If we end up stopping, the current frame will get selected |
4937 | in normal_stop. So this call to select_frame won't affect | |
4938 | the user. */ | |
0f7d239c | 4939 | select_frame (fr); |
c906108c | 4940 | } |
c5aa993b | 4941 | |
c906108c SS |
4942 | if (within_current_scope) |
4943 | { | |
4a64f543 | 4944 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
4945 | time before we return to the command level and call |
4946 | free_all_values. We can't call free_all_values because we | |
4947 | might be in the middle of evaluating a function call. */ | |
c906108c | 4948 | |
9c06b0b4 | 4949 | struct value *mark; |
fa4727a6 DJ |
4950 | struct value *new_val; |
4951 | ||
c1fc2657 | 4952 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4953 | /* Since we don't know the exact trigger address (from |
4954 | stopped_data_address), just tell the user we've triggered | |
4955 | a mask watchpoint. */ | |
4956 | return WP_VALUE_CHANGED; | |
4957 | ||
4958 | mark = value_mark (); | |
1eaebe02 | 4959 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 4960 | NULL, NULL, false); |
218d2fc6 | 4961 | |
bb9d5f81 PP |
4962 | if (b->val_bitsize != 0) |
4963 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4964 | ||
4a64f543 MS |
4965 | /* We use value_equal_contents instead of value_equal because |
4966 | the latter coerces an array to a pointer, thus comparing just | |
4967 | the address of the array instead of its contents. This is | |
4968 | not what we want. */ | |
fa4727a6 | 4969 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4970 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4971 | new_val))) | |
c906108c | 4972 | { |
c906108c | 4973 | bs->old_val = b->val; |
850645cf | 4974 | b->val = release_value (new_val); |
4c1d86d9 | 4975 | b->val_valid = true; |
850645cf TT |
4976 | if (new_val != NULL) |
4977 | value_free_to_mark (mark); | |
c906108c SS |
4978 | return WP_VALUE_CHANGED; |
4979 | } | |
4980 | else | |
4981 | { | |
60e1c644 | 4982 | /* Nothing changed. */ |
c906108c | 4983 | value_free_to_mark (mark); |
c906108c SS |
4984 | return WP_VALUE_NOT_CHANGED; |
4985 | } | |
4986 | } | |
4987 | else | |
4988 | { | |
4989 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
4990 | if we temporarily ignored the watchpoint, then when |
4991 | we reenter the block in which it is valid it contains | |
4992 | garbage (in the case of a function, it may have two | |
4993 | garbage values, one before and one after the prologue). | |
4994 | So we can't even detect the first assignment to it and | |
4995 | watch after that (since the garbage may or may not equal | |
4996 | the first value assigned). */ | |
348d480f PA |
4997 | /* We print all the stop information in |
4998 | breakpoint_ops->print_it, but in this case, by the time we | |
4999 | call breakpoint_ops->print_it this bp will be deleted | |
5000 | already. So we have no choice but print the information | |
5001 | here. */ | |
468afe6c | 5002 | |
0e454242 | 5003 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5004 | { |
468afe6c PA |
5005 | struct ui_out *uiout = current_uiout; |
5006 | ||
112e8700 SM |
5007 | if (uiout->is_mi_like_p ()) |
5008 | uiout->field_string | |
5009 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5010 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5011 | "left the block in\n" | |
5012 | "which its expression is valid.\n", | |
5013 | signed_field ("wpnum", b->number)); | |
468afe6c | 5014 | } |
4ce44c66 | 5015 | |
cdac0397 | 5016 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5017 | b->commands = NULL; |
d0fb5eae | 5018 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5019 | |
5020 | return WP_DELETED; | |
5021 | } | |
5022 | } | |
5023 | ||
18a18393 | 5024 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5025 | breakpoint location BL. This function does not check if we should |
5026 | stop, only if BL explains the stop. */ | |
5027 | ||
18a18393 | 5028 | static int |
6c95b8df | 5029 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5030 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5031 | const struct target_waitstatus *ws) |
18a18393 VP |
5032 | { |
5033 | struct breakpoint *b = bl->owner; | |
5034 | ||
348d480f | 5035 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5036 | gdb_assert (b != NULL); |
5037 | ||
bd522513 | 5038 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5039 | } |
5040 | ||
3a5c3e22 PA |
5041 | /* Determine if the watched values have actually changed, and we |
5042 | should stop. If not, set BS->stop to 0. */ | |
5043 | ||
18a18393 VP |
5044 | static void |
5045 | bpstat_check_watchpoint (bpstat bs) | |
5046 | { | |
2bdf28a0 | 5047 | const struct bp_location *bl; |
3a5c3e22 | 5048 | struct watchpoint *b; |
2bdf28a0 JK |
5049 | |
5050 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5051 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5052 | gdb_assert (bl != NULL); |
3a5c3e22 | 5053 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5054 | gdb_assert (b != NULL); |
18a18393 | 5055 | |
18a18393 | 5056 | { |
18a18393 VP |
5057 | int must_check_value = 0; |
5058 | ||
c1fc2657 | 5059 | if (b->type == bp_watchpoint) |
18a18393 VP |
5060 | /* For a software watchpoint, we must always check the |
5061 | watched value. */ | |
5062 | must_check_value = 1; | |
5063 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5064 | /* We have a hardware watchpoint (read, write, or access) | |
5065 | and the target earlier reported an address watched by | |
5066 | this watchpoint. */ | |
5067 | must_check_value = 1; | |
5068 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5069 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5070 | /* We were stopped by a hardware watchpoint, but the target could |
5071 | not report the data address. We must check the watchpoint's | |
5072 | value. Access and read watchpoints are out of luck; without | |
5073 | a data address, we can't figure it out. */ | |
5074 | must_check_value = 1; | |
3a5c3e22 | 5075 | |
18a18393 VP |
5076 | if (must_check_value) |
5077 | { | |
bf469271 PA |
5078 | wp_check_result e; |
5079 | ||
a70b8144 | 5080 | try |
bf469271 PA |
5081 | { |
5082 | e = watchpoint_check (bs); | |
5083 | } | |
230d2906 | 5084 | catch (const gdb_exception &ex) |
bf469271 PA |
5085 | { |
5086 | exception_fprintf (gdb_stderr, ex, | |
5087 | "Error evaluating expression " | |
5088 | "for watchpoint %d\n", | |
5089 | b->number); | |
5090 | ||
5091 | SWITCH_THRU_ALL_UIS () | |
5092 | { | |
5093 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5094 | b->number); | |
5095 | } | |
5096 | watchpoint_del_at_next_stop (b); | |
5097 | e = WP_DELETED; | |
5098 | } | |
bf469271 | 5099 | |
18a18393 VP |
5100 | switch (e) |
5101 | { | |
5102 | case WP_DELETED: | |
5103 | /* We've already printed what needs to be printed. */ | |
5104 | bs->print_it = print_it_done; | |
5105 | /* Stop. */ | |
5106 | break; | |
60e1c644 PA |
5107 | case WP_IGNORE: |
5108 | bs->print_it = print_it_noop; | |
5109 | bs->stop = 0; | |
5110 | break; | |
18a18393 | 5111 | case WP_VALUE_CHANGED: |
c1fc2657 | 5112 | if (b->type == bp_read_watchpoint) |
18a18393 | 5113 | { |
85d721b8 PA |
5114 | /* There are two cases to consider here: |
5115 | ||
4a64f543 | 5116 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5117 | In that case, trust the target, and always report |
5118 | the watchpoint hit to the user. Even though | |
5119 | reads don't cause value changes, the value may | |
5120 | have changed since the last time it was read, and | |
5121 | since we're not trapping writes, we will not see | |
5122 | those, and as such we should ignore our notion of | |
5123 | old value. | |
5124 | ||
4a64f543 | 5125 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5126 | reads and writes. There are two ways this may |
5127 | happen: | |
5128 | ||
4a64f543 | 5129 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5130 | reads only, but can break on accesses (reads or |
5131 | writes), such as e.g., x86. We detect this case | |
5132 | at the time we try to insert read watchpoints. | |
5133 | ||
4a64f543 | 5134 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5135 | watchpoints, but, the user set an access or write |
5136 | watchpoint watching the same memory as this read | |
5137 | watchpoint. | |
5138 | ||
5139 | If we're watching memory writes as well as reads, | |
5140 | ignore watchpoint hits when we find that the | |
5141 | value hasn't changed, as reads don't cause | |
5142 | changes. This still gives false positives when | |
5143 | the program writes the same value to memory as | |
5144 | what there was already in memory (we will confuse | |
5145 | it for a read), but it's much better than | |
5146 | nothing. */ | |
5147 | ||
5148 | int other_write_watchpoint = 0; | |
5149 | ||
5150 | if (bl->watchpoint_type == hw_read) | |
5151 | { | |
43892fdf | 5152 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5153 | if (other_b->type == bp_hardware_watchpoint |
5154 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5155 | { |
3a5c3e22 PA |
5156 | struct watchpoint *other_w = |
5157 | (struct watchpoint *) other_b; | |
5158 | ||
5159 | if (other_w->watchpoint_triggered | |
5160 | == watch_triggered_yes) | |
5161 | { | |
5162 | other_write_watchpoint = 1; | |
5163 | break; | |
5164 | } | |
85d721b8 PA |
5165 | } |
5166 | } | |
5167 | ||
5168 | if (other_write_watchpoint | |
5169 | || bl->watchpoint_type == hw_access) | |
5170 | { | |
5171 | /* We're watching the same memory for writes, | |
5172 | and the value changed since the last time we | |
5173 | updated it, so this trap must be for a write. | |
5174 | Ignore it. */ | |
5175 | bs->print_it = print_it_noop; | |
5176 | bs->stop = 0; | |
5177 | } | |
18a18393 VP |
5178 | } |
5179 | break; | |
5180 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5181 | if (b->type == bp_hardware_watchpoint |
5182 | || b->type == bp_watchpoint) | |
18a18393 VP |
5183 | { |
5184 | /* Don't stop: write watchpoints shouldn't fire if | |
5185 | the value hasn't changed. */ | |
5186 | bs->print_it = print_it_noop; | |
5187 | bs->stop = 0; | |
5188 | } | |
5189 | /* Stop. */ | |
5190 | break; | |
5191 | default: | |
5192 | /* Can't happen. */ | |
18a18393 VP |
5193 | break; |
5194 | } | |
5195 | } | |
5196 | else /* must_check_value == 0 */ | |
5197 | { | |
5198 | /* This is a case where some watchpoint(s) triggered, but | |
5199 | not at the address of this watchpoint, or else no | |
5200 | watchpoint triggered after all. So don't print | |
5201 | anything for this watchpoint. */ | |
5202 | bs->print_it = print_it_noop; | |
5203 | bs->stop = 0; | |
5204 | } | |
5205 | } | |
5206 | } | |
5207 | ||
7d4df6a4 DE |
5208 | /* For breakpoints that are currently marked as telling gdb to stop, |
5209 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5210 | of breakpoint referred to by BS. If we should not stop for this |
5211 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5212 | |
18a18393 | 5213 | static void |
00431a78 | 5214 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5215 | { |
2bdf28a0 JK |
5216 | const struct bp_location *bl; |
5217 | struct breakpoint *b; | |
bf469271 PA |
5218 | /* Assume stop. */ |
5219 | bool condition_result = true; | |
7d4df6a4 DE |
5220 | struct expression *cond; |
5221 | ||
5222 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5223 | |
5224 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5225 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5226 | gdb_assert (bl != NULL); |
f431efe5 | 5227 | b = bs->breakpoint_at; |
2bdf28a0 | 5228 | gdb_assert (b != NULL); |
18a18393 | 5229 | |
b775012e LM |
5230 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5231 | need to do so again since GDB does not know if we stopped due to a | |
5232 | breakpoint or a single step breakpoint. */ | |
5233 | ||
18a18393 | 5234 | if (frame_id_p (b->frame_id) |
edb3359d | 5235 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5236 | { |
7d4df6a4 DE |
5237 | bs->stop = 0; |
5238 | return; | |
5239 | } | |
60e1c644 | 5240 | |
12ab52e9 PA |
5241 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5242 | evaluating the condition if this isn't the specified | |
5243 | thread/task. */ | |
00431a78 PA |
5244 | if ((b->thread != -1 && b->thread != thread->global_num) |
5245 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5246 | { |
5247 | bs->stop = 0; | |
5248 | return; | |
5249 | } | |
5250 | ||
6dddc817 DE |
5251 | /* Evaluate extension language breakpoints that have a "stop" method |
5252 | implemented. */ | |
5253 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5254 | |
7d4df6a4 DE |
5255 | if (is_watchpoint (b)) |
5256 | { | |
5257 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5258 | |
4d01a485 | 5259 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5260 | } |
5261 | else | |
4d01a485 | 5262 | cond = bl->cond.get (); |
60e1c644 | 5263 | |
7d4df6a4 DE |
5264 | if (cond && b->disposition != disp_del_at_next_stop) |
5265 | { | |
5266 | int within_current_scope = 1; | |
5267 | struct watchpoint * w; | |
60e1c644 | 5268 | |
7d4df6a4 DE |
5269 | /* We use value_mark and value_free_to_mark because it could |
5270 | be a long time before we return to the command level and | |
5271 | call free_all_values. We can't call free_all_values | |
5272 | because we might be in the middle of evaluating a | |
5273 | function call. */ | |
5274 | struct value *mark = value_mark (); | |
5275 | ||
5276 | if (is_watchpoint (b)) | |
5277 | w = (struct watchpoint *) b; | |
5278 | else | |
5279 | w = NULL; | |
5280 | ||
5281 | /* Need to select the frame, with all that implies so that | |
5282 | the conditions will have the right context. Because we | |
5283 | use the frame, we will not see an inlined function's | |
5284 | variables when we arrive at a breakpoint at the start | |
5285 | of the inlined function; the current frame will be the | |
5286 | call site. */ | |
5287 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5288 | select_frame (get_current_frame ()); | |
5289 | else | |
18a18393 | 5290 | { |
7d4df6a4 DE |
5291 | struct frame_info *frame; |
5292 | ||
5293 | /* For local watchpoint expressions, which particular | |
5294 | instance of a local is being watched matters, so we | |
5295 | keep track of the frame to evaluate the expression | |
5296 | in. To evaluate the condition however, it doesn't | |
5297 | really matter which instantiation of the function | |
5298 | where the condition makes sense triggers the | |
5299 | watchpoint. This allows an expression like "watch | |
5300 | global if q > 10" set in `func', catch writes to | |
5301 | global on all threads that call `func', or catch | |
5302 | writes on all recursive calls of `func' by a single | |
5303 | thread. We simply always evaluate the condition in | |
5304 | the innermost frame that's executing where it makes | |
5305 | sense to evaluate the condition. It seems | |
5306 | intuitive. */ | |
5307 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5308 | if (frame != NULL) | |
5309 | select_frame (frame); | |
5310 | else | |
5311 | within_current_scope = 0; | |
18a18393 | 5312 | } |
7d4df6a4 | 5313 | if (within_current_scope) |
bf469271 | 5314 | { |
a70b8144 | 5315 | try |
bf469271 PA |
5316 | { |
5317 | condition_result = breakpoint_cond_eval (cond); | |
5318 | } | |
230d2906 | 5319 | catch (const gdb_exception &ex) |
bf469271 PA |
5320 | { |
5321 | exception_fprintf (gdb_stderr, ex, | |
5322 | "Error in testing breakpoint condition:\n"); | |
5323 | } | |
bf469271 | 5324 | } |
7d4df6a4 | 5325 | else |
18a18393 | 5326 | { |
7d4df6a4 DE |
5327 | warning (_("Watchpoint condition cannot be tested " |
5328 | "in the current scope")); | |
5329 | /* If we failed to set the right context for this | |
5330 | watchpoint, unconditionally report it. */ | |
18a18393 | 5331 | } |
7d4df6a4 DE |
5332 | /* FIXME-someday, should give breakpoint #. */ |
5333 | value_free_to_mark (mark); | |
18a18393 | 5334 | } |
7d4df6a4 | 5335 | |
bf469271 | 5336 | if (cond && !condition_result) |
7d4df6a4 DE |
5337 | { |
5338 | bs->stop = 0; | |
5339 | } | |
7d4df6a4 DE |
5340 | else if (b->ignore_count > 0) |
5341 | { | |
5342 | b->ignore_count--; | |
5343 | bs->stop = 0; | |
5344 | /* Increase the hit count even though we don't stop. */ | |
5345 | ++(b->hit_count); | |
76727919 | 5346 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5347 | } |
18a18393 VP |
5348 | } |
5349 | ||
1cf4d951 PA |
5350 | /* Returns true if we need to track moribund locations of LOC's type |
5351 | on the current target. */ | |
5352 | ||
5353 | static int | |
5354 | need_moribund_for_location_type (struct bp_location *loc) | |
5355 | { | |
5356 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5357 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5358 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5359 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5360 | } | |
5361 | ||
ddfe970e | 5362 | /* See breakpoint.h. */ |
c906108c SS |
5363 | |
5364 | bpstat | |
ddfe970e | 5365 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5366 | const struct target_waitstatus *ws) |
c906108c | 5367 | { |
5760d0ab | 5368 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5369 | |
43892fdf | 5370 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5371 | { |
1a853c52 | 5372 | if (!breakpoint_enabled (b)) |
429374b8 | 5373 | continue; |
a5606eee | 5374 | |
40cb8ca5 | 5375 | for (bp_location *bl : b->locations ()) |
429374b8 | 5376 | { |
4a64f543 MS |
5377 | /* For hardware watchpoints, we look only at the first |
5378 | location. The watchpoint_check function will work on the | |
5379 | entire expression, not the individual locations. For | |
5380 | read watchpoints, the watchpoints_triggered function has | |
5381 | checked all locations already. */ | |
429374b8 JK |
5382 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5383 | break; | |
18a18393 | 5384 | |
b5fa468f | 5385 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5386 | continue; |
c5aa993b | 5387 | |
09ac7c10 | 5388 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5389 | continue; |
c5aa993b | 5390 | |
4a64f543 MS |
5391 | /* Come here if it's a watchpoint, or if the break address |
5392 | matches. */ | |
c5aa993b | 5393 | |
ddfe970e KS |
5394 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5395 | explain stop. */ | |
c5aa993b | 5396 | |
f431efe5 PA |
5397 | /* Assume we stop. Should we find a watchpoint that is not |
5398 | actually triggered, or if the condition of the breakpoint | |
5399 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5400 | bs->stop = 1; |
5401 | bs->print = 1; | |
d983da9c | 5402 | |
f431efe5 PA |
5403 | /* If this is a scope breakpoint, mark the associated |
5404 | watchpoint as triggered so that we will handle the | |
5405 | out-of-scope event. We'll get to the watchpoint next | |
5406 | iteration. */ | |
d0fb5eae | 5407 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5408 | { |
5409 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5410 | ||
5411 | w->watchpoint_triggered = watch_triggered_yes; | |
5412 | } | |
f431efe5 PA |
5413 | } |
5414 | } | |
5415 | ||
7c16b83e | 5416 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5417 | if (!target_supports_stopped_by_sw_breakpoint () |
5418 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5419 | { |
1123588c | 5420 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5421 | { |
1cf4d951 PA |
5422 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5423 | && need_moribund_for_location_type (loc)) | |
5424 | { | |
ddfe970e | 5425 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5426 | /* For hits of moribund locations, we should just proceed. */ |
5427 | bs->stop = 0; | |
5428 | bs->print = 0; | |
5429 | bs->print_it = print_it_noop; | |
5430 | } | |
f431efe5 PA |
5431 | } |
5432 | } | |
5433 | ||
ddfe970e KS |
5434 | return bs_head; |
5435 | } | |
5436 | ||
5437 | /* See breakpoint.h. */ | |
5438 | ||
5439 | bpstat | |
5440 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5441 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5442 | const struct target_waitstatus *ws, |
5443 | bpstat stop_chain) | |
5444 | { | |
5445 | struct breakpoint *b = NULL; | |
5446 | /* First item of allocated bpstat's. */ | |
5447 | bpstat bs_head = stop_chain; | |
5448 | bpstat bs; | |
5449 | int need_remove_insert; | |
5450 | int removed_any; | |
5451 | ||
5452 | /* First, build the bpstat chain with locations that explain a | |
5453 | target stop, while being careful to not set the target running, | |
5454 | as that may invalidate locations (in particular watchpoint | |
5455 | locations are recreated). Resuming will happen here with | |
5456 | breakpoint conditions or watchpoint expressions that include | |
5457 | inferior function calls. */ | |
5458 | if (bs_head == NULL) | |
5459 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5460 | ||
edcc5120 TT |
5461 | /* A bit of special processing for shlib breakpoints. We need to |
5462 | process solib loading here, so that the lists of loaded and | |
5463 | unloaded libraries are correct before we handle "catch load" and | |
5464 | "catch unload". */ | |
5465 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5466 | { | |
5d268276 | 5467 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5468 | { |
5469 | handle_solib_event (); | |
5470 | break; | |
5471 | } | |
5472 | } | |
5473 | ||
f431efe5 PA |
5474 | /* Now go through the locations that caused the target to stop, and |
5475 | check whether we're interested in reporting this stop to higher | |
5476 | layers, or whether we should resume the target transparently. */ | |
5477 | ||
5478 | removed_any = 0; | |
5479 | ||
5760d0ab | 5480 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5481 | { |
5482 | if (!bs->stop) | |
5483 | continue; | |
5484 | ||
f431efe5 | 5485 | b = bs->breakpoint_at; |
348d480f PA |
5486 | b->ops->check_status (bs); |
5487 | if (bs->stop) | |
28010a5d | 5488 | { |
00431a78 | 5489 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5490 | |
429374b8 JK |
5491 | if (bs->stop) |
5492 | { | |
5493 | ++(b->hit_count); | |
76727919 | 5494 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5495 | |
4a64f543 | 5496 | /* We will stop here. */ |
429374b8 JK |
5497 | if (b->disposition == disp_disable) |
5498 | { | |
816338b5 | 5499 | --(b->enable_count); |
1a853c52 | 5500 | if (b->enable_count <= 0) |
429374b8 | 5501 | b->enable_state = bp_disabled; |
f431efe5 | 5502 | removed_any = 1; |
429374b8 JK |
5503 | } |
5504 | if (b->silent) | |
5505 | bs->print = 0; | |
5506 | bs->commands = b->commands; | |
abf85f46 | 5507 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5508 | ? bs->commands.get () : NULL)) |
abf85f46 | 5509 | bs->print = 0; |
9d6e6e84 HZ |
5510 | |
5511 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5512 | } |
5513 | ||
348d480f | 5514 | } |
a9b3a50f PA |
5515 | |
5516 | /* Print nothing for this entry if we don't stop or don't | |
5517 | print. */ | |
5518 | if (!bs->stop || !bs->print) | |
5519 | bs->print_it = print_it_noop; | |
429374b8 | 5520 | } |
876fa593 | 5521 | |
d983da9c DJ |
5522 | /* If we aren't stopping, the value of some hardware watchpoint may |
5523 | not have changed, but the intermediate memory locations we are | |
5524 | watching may have. Don't bother if we're stopping; this will get | |
5525 | done later. */ | |
d832cb68 | 5526 | need_remove_insert = 0; |
5760d0ab JK |
5527 | if (! bpstat_causes_stop (bs_head)) |
5528 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5529 | if (!bs->stop |
f431efe5 PA |
5530 | && bs->breakpoint_at |
5531 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5532 | { |
3a5c3e22 PA |
5533 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5534 | ||
5535 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5536 | need_remove_insert = 1; |
d983da9c DJ |
5537 | } |
5538 | ||
d832cb68 | 5539 | if (need_remove_insert) |
44702360 | 5540 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5541 | else if (removed_any) |
44702360 | 5542 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5543 | |
5760d0ab | 5544 | return bs_head; |
c906108c | 5545 | } |
628fe4e4 JK |
5546 | |
5547 | static void | |
61c26be8 | 5548 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5549 | { |
628fe4e4 JK |
5550 | struct gdbarch *gdbarch; |
5551 | ||
1eb8556f | 5552 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5553 | |
628fe4e4 JK |
5554 | /* Switch terminal for any messages produced by |
5555 | breakpoint_re_set. */ | |
223ffa71 | 5556 | target_terminal::ours_for_output (); |
628fe4e4 | 5557 | |
61c26be8 MS |
5558 | gdbarch = get_frame_arch (get_current_frame ()); |
5559 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5560 | thus it is expected that its objectfile can be found through | |
5561 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5562 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5563 | function needs to be updated too. */ | |
5564 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5565 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
5566 | jit_event_handler (gdbarch, jit_bp_sym.objfile); | |
628fe4e4 | 5567 | |
223ffa71 | 5568 | target_terminal::inferior (); |
628fe4e4 JK |
5569 | } |
5570 | ||
5571 | /* Prepare WHAT final decision for infrun. */ | |
5572 | ||
5573 | /* Decide what infrun needs to do with this bpstat. */ | |
5574 | ||
c906108c | 5575 | struct bpstat_what |
0e30163f | 5576 | bpstat_what (bpstat bs_head) |
c906108c | 5577 | { |
c906108c | 5578 | struct bpstat_what retval; |
0e30163f | 5579 | bpstat bs; |
c906108c | 5580 | |
628fe4e4 | 5581 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5582 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5583 | retval.is_longjmp = false; |
628fe4e4 | 5584 | |
0e30163f | 5585 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5586 | { |
628fe4e4 JK |
5587 | /* Extract this BS's action. After processing each BS, we check |
5588 | if its action overrides all we've seem so far. */ | |
5589 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5590 | enum bptype bptype; | |
5591 | ||
c906108c | 5592 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5593 | { |
5594 | /* I suspect this can happen if it was a momentary | |
5595 | breakpoint which has since been deleted. */ | |
5596 | bptype = bp_none; | |
5597 | } | |
20874c92 | 5598 | else |
f431efe5 | 5599 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5600 | |
5601 | switch (bptype) | |
c906108c SS |
5602 | { |
5603 | case bp_none: | |
628fe4e4 | 5604 | break; |
c906108c SS |
5605 | case bp_breakpoint: |
5606 | case bp_hardware_breakpoint: | |
7c16b83e | 5607 | case bp_single_step: |
c906108c SS |
5608 | case bp_until: |
5609 | case bp_finish: | |
a9b3a50f | 5610 | case bp_shlib_event: |
c906108c SS |
5611 | if (bs->stop) |
5612 | { | |
5613 | if (bs->print) | |
628fe4e4 | 5614 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5615 | else |
628fe4e4 | 5616 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5617 | } |
5618 | else | |
628fe4e4 | 5619 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5620 | break; |
5621 | case bp_watchpoint: | |
5622 | case bp_hardware_watchpoint: | |
5623 | case bp_read_watchpoint: | |
5624 | case bp_access_watchpoint: | |
5625 | if (bs->stop) | |
5626 | { | |
5627 | if (bs->print) | |
628fe4e4 | 5628 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5629 | else |
628fe4e4 | 5630 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5631 | } |
5632 | else | |
628fe4e4 JK |
5633 | { |
5634 | /* There was a watchpoint, but we're not stopping. | |
5635 | This requires no further action. */ | |
5636 | } | |
c906108c SS |
5637 | break; |
5638 | case bp_longjmp: | |
e2e4d78b | 5639 | case bp_longjmp_call_dummy: |
186c406b | 5640 | case bp_exception: |
0a39bb32 PA |
5641 | if (bs->stop) |
5642 | { | |
5643 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5644 | retval.is_longjmp = bptype != bp_exception; | |
5645 | } | |
5646 | else | |
5647 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5648 | break; |
5649 | case bp_longjmp_resume: | |
186c406b | 5650 | case bp_exception_resume: |
0a39bb32 PA |
5651 | if (bs->stop) |
5652 | { | |
5653 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5654 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5655 | } | |
5656 | else | |
5657 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5658 | break; |
5659 | case bp_step_resume: | |
5660 | if (bs->stop) | |
628fe4e4 JK |
5661 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5662 | else | |
c906108c | 5663 | { |
628fe4e4 JK |
5664 | /* It is for the wrong frame. */ |
5665 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5666 | } |
c906108c | 5667 | break; |
2c03e5be PA |
5668 | case bp_hp_step_resume: |
5669 | if (bs->stop) | |
5670 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5671 | else | |
5672 | { | |
5673 | /* It is for the wrong frame. */ | |
5674 | this_action = BPSTAT_WHAT_SINGLE; | |
5675 | } | |
5676 | break; | |
c906108c | 5677 | case bp_watchpoint_scope: |
c4093a6a | 5678 | case bp_thread_event: |
1900040c | 5679 | case bp_overlay_event: |
0fd8e87f | 5680 | case bp_longjmp_master: |
aa7d318d | 5681 | case bp_std_terminate_master: |
186c406b | 5682 | case bp_exception_master: |
628fe4e4 | 5683 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5684 | break; |
ce78b96d | 5685 | case bp_catchpoint: |
c5aa993b JM |
5686 | if (bs->stop) |
5687 | { | |
5688 | if (bs->print) | |
628fe4e4 | 5689 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5690 | else |
628fe4e4 | 5691 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5692 | } |
5693 | else | |
628fe4e4 | 5694 | { |
cb1e4e32 PA |
5695 | /* Some catchpoints are implemented with breakpoints. |
5696 | For those, we need to step over the breakpoint. */ | |
5697 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5698 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5699 | } |
5700 | break; | |
628fe4e4 | 5701 | case bp_jit_event: |
628fe4e4 | 5702 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5703 | break; |
c906108c | 5704 | case bp_call_dummy: |
53a5351d JM |
5705 | /* Make sure the action is stop (silent or noisy), |
5706 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5707 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5708 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5709 | break; |
5710 | case bp_std_terminate: | |
5711 | /* Make sure the action is stop (silent or noisy), | |
5712 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5713 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5714 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5715 | break; |
1042e4c0 | 5716 | case bp_tracepoint: |
7a697b8d | 5717 | case bp_fast_tracepoint: |
0fb4aa4b | 5718 | case bp_static_tracepoint: |
1042e4c0 SS |
5719 | /* Tracepoint hits should not be reported back to GDB, and |
5720 | if one got through somehow, it should have been filtered | |
5721 | out already. */ | |
5722 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5723 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5724 | break; |
5725 | case bp_gnu_ifunc_resolver: | |
5726 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5727 | this_action = BPSTAT_WHAT_SINGLE; | |
5728 | break; | |
5729 | case bp_gnu_ifunc_resolver_return: | |
5730 | /* The breakpoint will be removed, execution will restart from the | |
5731 | PC of the former breakpoint. */ | |
5732 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5733 | break; | |
e7e0cddf SS |
5734 | |
5735 | case bp_dprintf: | |
a11cfd87 HZ |
5736 | if (bs->stop) |
5737 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5738 | else | |
5739 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5740 | break; |
5741 | ||
628fe4e4 JK |
5742 | default: |
5743 | internal_error (__FILE__, __LINE__, | |
5744 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5745 | } |
628fe4e4 | 5746 | |
325fac50 | 5747 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5748 | } |
628fe4e4 | 5749 | |
243a9253 PA |
5750 | return retval; |
5751 | } | |
628fe4e4 | 5752 | |
243a9253 PA |
5753 | void |
5754 | bpstat_run_callbacks (bpstat bs_head) | |
5755 | { | |
5756 | bpstat bs; | |
628fe4e4 | 5757 | |
0e30163f JK |
5758 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5759 | { | |
5760 | struct breakpoint *b = bs->breakpoint_at; | |
5761 | ||
5762 | if (b == NULL) | |
5763 | continue; | |
5764 | switch (b->type) | |
5765 | { | |
243a9253 | 5766 | case bp_jit_event: |
61c26be8 | 5767 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 5768 | break; |
0e30163f JK |
5769 | case bp_gnu_ifunc_resolver: |
5770 | gnu_ifunc_resolver_stop (b); | |
5771 | break; | |
5772 | case bp_gnu_ifunc_resolver_return: | |
5773 | gnu_ifunc_resolver_return_stop (b); | |
5774 | break; | |
5775 | } | |
5776 | } | |
c906108c SS |
5777 | } |
5778 | ||
4c462cb0 | 5779 | /* See breakpoint.h. */ |
c906108c | 5780 | |
4c462cb0 SM |
5781 | bool |
5782 | bpstat_should_step () | |
c906108c | 5783 | { |
43892fdf | 5784 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 5785 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 5786 | return true; |
43892fdf | 5787 | |
4c462cb0 | 5788 | return false; |
c906108c SS |
5789 | } |
5790 | ||
4c462cb0 SM |
5791 | /* See breakpoint.h. */ |
5792 | ||
5793 | bool | |
67822962 PA |
5794 | bpstat_causes_stop (bpstat bs) |
5795 | { | |
5796 | for (; bs != NULL; bs = bs->next) | |
5797 | if (bs->stop) | |
4c462cb0 | 5798 | return true; |
67822962 | 5799 | |
4c462cb0 | 5800 | return false; |
67822962 PA |
5801 | } |
5802 | ||
c906108c | 5803 | \f |
c5aa993b | 5804 | |
170b53b2 UW |
5805 | /* Compute a string of spaces suitable to indent the next line |
5806 | so it starts at the position corresponding to the table column | |
5807 | named COL_NAME in the currently active table of UIOUT. */ | |
5808 | ||
5809 | static char * | |
5810 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5811 | { | |
5812 | static char wrap_indent[80]; | |
5813 | int i, total_width, width, align; | |
c5209615 | 5814 | const char *text; |
170b53b2 UW |
5815 | |
5816 | total_width = 0; | |
112e8700 | 5817 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5818 | { |
5819 | if (strcmp (text, col_name) == 0) | |
5820 | { | |
5821 | gdb_assert (total_width < sizeof wrap_indent); | |
5822 | memset (wrap_indent, ' ', total_width); | |
5823 | wrap_indent[total_width] = 0; | |
5824 | ||
5825 | return wrap_indent; | |
5826 | } | |
5827 | ||
5828 | total_width += width + 1; | |
5829 | } | |
5830 | ||
5831 | return NULL; | |
5832 | } | |
5833 | ||
b775012e LM |
5834 | /* Determine if the locations of this breakpoint will have their conditions |
5835 | evaluated by the target, host or a mix of both. Returns the following: | |
5836 | ||
5837 | "host": Host evals condition. | |
5838 | "host or target": Host or Target evals condition. | |
5839 | "target": Target evals condition. | |
5840 | */ | |
5841 | ||
5842 | static const char * | |
5843 | bp_condition_evaluator (struct breakpoint *b) | |
5844 | { | |
b775012e LM |
5845 | char host_evals = 0; |
5846 | char target_evals = 0; | |
5847 | ||
5848 | if (!b) | |
5849 | return NULL; | |
5850 | ||
5851 | if (!is_breakpoint (b)) | |
5852 | return NULL; | |
5853 | ||
5854 | if (gdb_evaluates_breakpoint_condition_p () | |
5855 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5856 | return condition_evaluation_host; | |
5857 | ||
40cb8ca5 | 5858 | for (bp_location *bl : b->locations ()) |
b775012e LM |
5859 | { |
5860 | if (bl->cond_bytecode) | |
5861 | target_evals++; | |
5862 | else | |
5863 | host_evals++; | |
5864 | } | |
5865 | ||
5866 | if (host_evals && target_evals) | |
5867 | return condition_evaluation_both; | |
5868 | else if (target_evals) | |
5869 | return condition_evaluation_target; | |
5870 | else | |
5871 | return condition_evaluation_host; | |
5872 | } | |
5873 | ||
5874 | /* Determine the breakpoint location's condition evaluator. This is | |
5875 | similar to bp_condition_evaluator, but for locations. */ | |
5876 | ||
5877 | static const char * | |
5878 | bp_location_condition_evaluator (struct bp_location *bl) | |
5879 | { | |
5880 | if (bl && !is_breakpoint (bl->owner)) | |
5881 | return NULL; | |
5882 | ||
5883 | if (gdb_evaluates_breakpoint_condition_p () | |
5884 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5885 | return condition_evaluation_host; | |
5886 | ||
5887 | if (bl && bl->cond_bytecode) | |
5888 | return condition_evaluation_target; | |
5889 | else | |
5890 | return condition_evaluation_host; | |
5891 | } | |
5892 | ||
859825b8 JK |
5893 | /* Print the LOC location out of the list of B->LOC locations. */ |
5894 | ||
170b53b2 UW |
5895 | static void |
5896 | print_breakpoint_location (struct breakpoint *b, | |
5897 | struct bp_location *loc) | |
0d381245 | 5898 | { |
79a45e25 | 5899 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5900 | |
5901 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5902 | |
859825b8 JK |
5903 | if (loc != NULL && loc->shlib_disabled) |
5904 | loc = NULL; | |
5905 | ||
6c95b8df PA |
5906 | if (loc != NULL) |
5907 | set_current_program_space (loc->pspace); | |
5908 | ||
56435ebe | 5909 | if (b->display_canonical) |
d28cd78a | 5910 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5911 | else if (loc && loc->symtab) |
0d381245 | 5912 | { |
4a27f119 KS |
5913 | const struct symbol *sym = loc->symbol; |
5914 | ||
0d381245 VP |
5915 | if (sym) |
5916 | { | |
112e8700 | 5917 | uiout->text ("in "); |
987012b8 | 5918 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5919 | function_name_style.style ()); |
112e8700 SM |
5920 | uiout->text (" "); |
5921 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5922 | uiout->text ("at "); | |
0d381245 | 5923 | } |
112e8700 | 5924 | uiout->field_string ("file", |
cbe56571 | 5925 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5926 | file_name_style.style ()); |
112e8700 | 5927 | uiout->text (":"); |
05cba821 | 5928 | |
112e8700 SM |
5929 | if (uiout->is_mi_like_p ()) |
5930 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5931 | |
381befee | 5932 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5933 | } |
859825b8 | 5934 | else if (loc) |
0d381245 | 5935 | { |
d7e74731 | 5936 | string_file stb; |
170b53b2 | 5937 | |
d7e74731 | 5938 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5939 | demangle, ""); |
112e8700 | 5940 | uiout->field_stream ("at", stb); |
0d381245 | 5941 | } |
859825b8 | 5942 | else |
f00aae0f | 5943 | { |
d28cd78a TT |
5944 | uiout->field_string ("pending", |
5945 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5946 | /* If extra_string is available, it could be holding a condition |
5947 | or dprintf arguments. In either case, make sure it is printed, | |
5948 | too, but only for non-MI streams. */ | |
112e8700 | 5949 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5950 | { |
5951 | if (b->type == bp_dprintf) | |
112e8700 | 5952 | uiout->text (","); |
f00aae0f | 5953 | else |
112e8700 SM |
5954 | uiout->text (" "); |
5955 | uiout->text (b->extra_string); | |
f00aae0f KS |
5956 | } |
5957 | } | |
6c95b8df | 5958 | |
b775012e LM |
5959 | if (loc && is_breakpoint (b) |
5960 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5961 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5962 | { | |
112e8700 SM |
5963 | uiout->text (" ("); |
5964 | uiout->field_string ("evaluated-by", | |
b775012e | 5965 | bp_location_condition_evaluator (loc)); |
112e8700 | 5966 | uiout->text (")"); |
b775012e | 5967 | } |
0d381245 VP |
5968 | } |
5969 | ||
269b11a2 PA |
5970 | static const char * |
5971 | bptype_string (enum bptype type) | |
c906108c | 5972 | { |
c4093a6a JM |
5973 | struct ep_type_description |
5974 | { | |
5975 | enum bptype type; | |
a121b7c1 | 5976 | const char *description; |
c4093a6a JM |
5977 | }; |
5978 | static struct ep_type_description bptypes[] = | |
c906108c | 5979 | { |
c5aa993b JM |
5980 | {bp_none, "?deleted?"}, |
5981 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5982 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5983 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5984 | {bp_until, "until"}, |
5985 | {bp_finish, "finish"}, | |
5986 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5987 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5988 | {bp_read_watchpoint, "read watchpoint"}, |
5989 | {bp_access_watchpoint, "acc watchpoint"}, | |
5990 | {bp_longjmp, "longjmp"}, | |
5991 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5992 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5993 | {bp_exception, "exception"}, |
5994 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5995 | {bp_step_resume, "step resume"}, |
2c03e5be | 5996 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5997 | {bp_watchpoint_scope, "watchpoint scope"}, |
5998 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5999 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6000 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6001 | {bp_thread_event, "thread events"}, |
1900040c | 6002 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6003 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6004 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6005 | {bp_exception_master, "exception master"}, |
ce78b96d | 6006 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6007 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6008 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6009 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6010 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6011 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6012 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6013 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6014 | }; |
269b11a2 PA |
6015 | |
6016 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6017 | || ((int) type != bptypes[(int) type].type)) | |
6018 | internal_error (__FILE__, __LINE__, | |
6019 | _("bptypes table does not describe type #%d."), | |
6020 | (int) type); | |
6021 | ||
6022 | return bptypes[(int) type].description; | |
6023 | } | |
6024 | ||
998580f1 MK |
6025 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6026 | For CLI, prefix the list with the string 'inf'. */ | |
6027 | ||
6028 | static void | |
6029 | output_thread_groups (struct ui_out *uiout, | |
6030 | const char *field_name, | |
5c632425 | 6031 | const std::vector<int> &inf_nums, |
998580f1 MK |
6032 | int mi_only) |
6033 | { | |
112e8700 | 6034 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6035 | |
6036 | /* For backward compatibility, don't display inferiors in CLI unless | |
6037 | there are several. Always display them for MI. */ | |
6038 | if (!is_mi && mi_only) | |
6039 | return; | |
6040 | ||
10f489e5 | 6041 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6042 | |
5c632425 | 6043 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6044 | { |
6045 | if (is_mi) | |
6046 | { | |
6047 | char mi_group[10]; | |
6048 | ||
5c632425 | 6049 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6050 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6051 | } |
6052 | else | |
6053 | { | |
6054 | if (i == 0) | |
112e8700 | 6055 | uiout->text (" inf "); |
998580f1 | 6056 | else |
112e8700 | 6057 | uiout->text (", "); |
998580f1 | 6058 | |
5c632425 | 6059 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6060 | } |
6061 | } | |
998580f1 MK |
6062 | } |
6063 | ||
a38118e5 PA |
6064 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6065 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6066 | info breakpoints" show the software breakpoint locations of | |
6067 | catchpoints, which are considered internal implementation | |
6068 | detail. */ | |
269b11a2 PA |
6069 | |
6070 | static void | |
6071 | print_one_breakpoint_location (struct breakpoint *b, | |
6072 | struct bp_location *loc, | |
6073 | int loc_number, | |
6074 | struct bp_location **last_loc, | |
a38118e5 | 6075 | int allflag, bool raw_loc) |
269b11a2 PA |
6076 | { |
6077 | struct command_line *l; | |
c2c6d25f | 6078 | static char bpenables[] = "nynny"; |
c906108c | 6079 | |
79a45e25 | 6080 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6081 | int header_of_multiple = 0; |
6082 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6083 | struct value_print_options opts; |
6084 | ||
6085 | get_user_print_options (&opts); | |
0d381245 VP |
6086 | |
6087 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6088 | /* See comment in print_one_breakpoint concerning treatment of |
6089 | breakpoints with single disabled location. */ | |
0d381245 VP |
6090 | if (loc == NULL |
6091 | && (b->loc != NULL | |
b5fa468f TBA |
6092 | && (b->loc->next != NULL |
6093 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6094 | header_of_multiple = 1; |
6095 | if (loc == NULL) | |
6096 | loc = b->loc; | |
6097 | ||
c4093a6a JM |
6098 | annotate_record (); |
6099 | ||
6100 | /* 1 */ | |
6101 | annotate_field (0); | |
0d381245 | 6102 | if (part_of_multiple) |
528e1572 | 6103 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6104 | else |
381befee | 6105 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6106 | |
6107 | /* 2 */ | |
6108 | annotate_field (1); | |
0d381245 | 6109 | if (part_of_multiple) |
112e8700 | 6110 | uiout->field_skip ("type"); |
269b11a2 | 6111 | else |
112e8700 | 6112 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6113 | |
6114 | /* 3 */ | |
6115 | annotate_field (2); | |
0d381245 | 6116 | if (part_of_multiple) |
112e8700 | 6117 | uiout->field_skip ("disp"); |
0d381245 | 6118 | else |
112e8700 | 6119 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6120 | |
c4093a6a JM |
6121 | /* 4 */ |
6122 | annotate_field (3); | |
85c88e2a TBA |
6123 | /* For locations that are disabled because of an invalid condition, |
6124 | display "N*" on CLI, where "*" refers to a footnote below the | |
6125 | table. For MI, simply display a "N" without a footnote. */ | |
6126 | const char *N = (uiout->is_mi_like_p ()) ? "N" : "N*"; | |
0d381245 | 6127 | if (part_of_multiple) |
85c88e2a | 6128 | uiout->field_string ("enabled", (loc->disabled_by_cond ? N |
b5fa468f | 6129 | : (loc->enabled ? "y" : "n"))); |
0d381245 | 6130 | else |
112e8700 | 6131 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6132 | |
c4093a6a | 6133 | /* 5 and 6 */ |
a38118e5 | 6134 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6135 | b->ops->print_one (b, last_loc); |
3086aeae | 6136 | else |
a38118e5 PA |
6137 | { |
6138 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6139 | { |
6140 | struct watchpoint *w = (struct watchpoint *) b; | |
6141 | ||
6142 | /* Field 4, the address, is omitted (which makes the columns | |
6143 | not line up too nicely with the headers, but the effect | |
6144 | is relatively readable). */ | |
6145 | if (opts.addressprint) | |
112e8700 | 6146 | uiout->field_skip ("addr"); |
3a5c3e22 | 6147 | annotate_field (5); |
112e8700 | 6148 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6149 | } |
f06f1252 TT |
6150 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6151 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6152 | { |
6153 | if (opts.addressprint) | |
6154 | { | |
6155 | annotate_field (4); | |
6156 | if (header_of_multiple) | |
7f6aba03 TT |
6157 | uiout->field_string ("addr", "<MULTIPLE>", |
6158 | metadata_style.style ()); | |
a38118e5 | 6159 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6160 | uiout->field_string ("addr", "<PENDING>", |
6161 | metadata_style.style ()); | |
a38118e5 PA |
6162 | else |
6163 | uiout->field_core_addr ("addr", | |
6164 | loc->gdbarch, loc->address); | |
6165 | } | |
6166 | annotate_field (5); | |
6167 | if (!header_of_multiple) | |
6168 | print_breakpoint_location (b, loc); | |
6169 | if (b->loc) | |
6170 | *last_loc = b->loc; | |
6171 | } | |
6172 | } | |
6c95b8df | 6173 | |
998580f1 | 6174 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6175 | { |
5c632425 | 6176 | std::vector<int> inf_nums; |
998580f1 | 6177 | int mi_only = 1; |
6c95b8df | 6178 | |
08036331 | 6179 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6180 | { |
6181 | if (inf->pspace == loc->pspace) | |
5c632425 | 6182 | inf_nums.push_back (inf->num); |
6c95b8df | 6183 | } |
998580f1 | 6184 | |
dda83cd7 | 6185 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6186 | there are several. Always display for MI. */ |
6187 | if (allflag | |
6188 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6189 | && (program_spaces.size () > 1 |
998580f1 MK |
6190 | || number_of_inferiors () > 1) |
6191 | /* LOC is for existing B, it cannot be in | |
6192 | moribund_locations and thus having NULL OWNER. */ | |
6193 | && loc->owner->type != bp_catchpoint)) | |
6194 | mi_only = 0; | |
5c632425 | 6195 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6196 | } |
6197 | ||
4a306c9a | 6198 | if (!part_of_multiple) |
c4093a6a | 6199 | { |
4a306c9a JB |
6200 | if (b->thread != -1) |
6201 | { | |
6202 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6203 | "stop only in" line a little further down. */ |
112e8700 | 6204 | uiout->text (" thread "); |
381befee | 6205 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6206 | } |
6207 | else if (b->task != 0) | |
6208 | { | |
112e8700 | 6209 | uiout->text (" task "); |
381befee | 6210 | uiout->field_signed ("task", b->task); |
4a306c9a | 6211 | } |
c4093a6a | 6212 | } |
f1310107 | 6213 | |
112e8700 | 6214 | uiout->text ("\n"); |
f1310107 | 6215 | |
348d480f | 6216 | if (!part_of_multiple) |
f1310107 TJB |
6217 | b->ops->print_one_detail (b, uiout); |
6218 | ||
0d381245 | 6219 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6220 | { |
6221 | annotate_field (6); | |
112e8700 | 6222 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6223 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6224 | the frame ID. */ |
112e8700 | 6225 | uiout->field_core_addr ("frame", |
5af949e3 | 6226 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6227 | uiout->text ("\n"); |
c4093a6a JM |
6228 | } |
6229 | ||
28010a5d | 6230 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6231 | { |
6232 | annotate_field (7); | |
d77f58be | 6233 | if (is_tracepoint (b)) |
112e8700 | 6234 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6235 | else |
112e8700 SM |
6236 | uiout->text ("\tstop only if "); |
6237 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6238 | |
6239 | /* Print whether the target is doing the breakpoint's condition | |
6240 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6241 | if (is_breakpoint (b) | |
6242 | && breakpoint_condition_evaluation_mode () | |
6243 | == condition_evaluation_target) | |
6244 | { | |
6a831f06 PA |
6245 | uiout->message (" (%pF evals)", |
6246 | string_field ("evaluated-by", | |
6247 | bp_condition_evaluator (b))); | |
b775012e | 6248 | } |
112e8700 | 6249 | uiout->text ("\n"); |
0101ce28 JJ |
6250 | } |
6251 | ||
0d381245 | 6252 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6253 | { |
4a64f543 | 6254 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6255 | uiout->text ("\tstop only in thread "); |
6256 | if (uiout->is_mi_like_p ()) | |
381befee | 6257 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6258 | else |
6259 | { | |
6260 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6261 | ||
112e8700 | 6262 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6263 | } |
112e8700 | 6264 | uiout->text ("\n"); |
c4093a6a JM |
6265 | } |
6266 | ||
556ec64d YQ |
6267 | if (!part_of_multiple) |
6268 | { | |
6269 | if (b->hit_count) | |
31f56a27 YQ |
6270 | { |
6271 | /* FIXME should make an annotation for this. */ | |
6272 | if (is_catchpoint (b)) | |
112e8700 | 6273 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6274 | else if (is_tracepoint (b)) |
112e8700 | 6275 | uiout->text ("\ttracepoint"); |
31f56a27 | 6276 | else |
112e8700 SM |
6277 | uiout->text ("\tbreakpoint"); |
6278 | uiout->text (" already hit "); | |
381befee | 6279 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6280 | if (b->hit_count == 1) |
112e8700 | 6281 | uiout->text (" time\n"); |
31f56a27 | 6282 | else |
112e8700 | 6283 | uiout->text (" times\n"); |
31f56a27 | 6284 | } |
556ec64d YQ |
6285 | else |
6286 | { | |
31f56a27 | 6287 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6288 | if (uiout->is_mi_like_p ()) |
381befee | 6289 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6290 | } |
6291 | } | |
8b93c638 | 6292 | |
0d381245 | 6293 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6294 | { |
6295 | annotate_field (8); | |
6a831f06 PA |
6296 | uiout->message ("\tignore next %pF hits\n", |
6297 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6298 | } |
059fb39f | 6299 | |
816338b5 SS |
6300 | /* Note that an enable count of 1 corresponds to "enable once" |
6301 | behavior, which is reported by the combination of enablement and | |
6302 | disposition, so we don't need to mention it here. */ | |
6303 | if (!part_of_multiple && b->enable_count > 1) | |
6304 | { | |
6305 | annotate_field (8); | |
112e8700 | 6306 | uiout->text ("\tdisable after "); |
816338b5 SS |
6307 | /* Tweak the wording to clarify that ignore and enable counts |
6308 | are distinct, and have additive effect. */ | |
6309 | if (b->ignore_count) | |
112e8700 | 6310 | uiout->text ("additional "); |
816338b5 | 6311 | else |
112e8700 | 6312 | uiout->text ("next "); |
381befee | 6313 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6314 | uiout->text (" hits\n"); |
816338b5 SS |
6315 | } |
6316 | ||
f196051f SS |
6317 | if (!part_of_multiple && is_tracepoint (b)) |
6318 | { | |
6319 | struct tracepoint *tp = (struct tracepoint *) b; | |
6320 | ||
6321 | if (tp->traceframe_usage) | |
6322 | { | |
112e8700 | 6323 | uiout->text ("\ttrace buffer usage "); |
381befee | 6324 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6325 | uiout->text (" bytes\n"); |
f196051f SS |
6326 | } |
6327 | } | |
d3ce09f5 | 6328 | |
d1b0a7bf | 6329 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6330 | if (!part_of_multiple && l) |
c4093a6a JM |
6331 | { |
6332 | annotate_field (9); | |
2e783024 | 6333 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6334 | print_command_lines (uiout, l, 4); |
c4093a6a | 6335 | } |
d24317b4 | 6336 | |
d9b3f62e | 6337 | if (is_tracepoint (b)) |
1042e4c0 | 6338 | { |
d9b3f62e PA |
6339 | struct tracepoint *t = (struct tracepoint *) b; |
6340 | ||
6341 | if (!part_of_multiple && t->pass_count) | |
6342 | { | |
6343 | annotate_field (10); | |
112e8700 | 6344 | uiout->text ("\tpass count "); |
381befee | 6345 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6346 | uiout->text (" \n"); |
d9b3f62e | 6347 | } |
f2a8bc8a YQ |
6348 | |
6349 | /* Don't display it when tracepoint or tracepoint location is | |
6350 | pending. */ | |
6351 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6352 | { | |
6353 | annotate_field (11); | |
6354 | ||
112e8700 SM |
6355 | if (uiout->is_mi_like_p ()) |
6356 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6357 | loc->inserted ? "y" : "n"); |
6358 | else | |
6359 | { | |
6360 | if (loc->inserted) | |
112e8700 | 6361 | uiout->text ("\t"); |
f2a8bc8a | 6362 | else |
112e8700 SM |
6363 | uiout->text ("\tnot "); |
6364 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6365 | } |
6366 | } | |
1042e4c0 SS |
6367 | } |
6368 | ||
112e8700 | 6369 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6370 | { |
3a5c3e22 PA |
6371 | if (is_watchpoint (b)) |
6372 | { | |
6373 | struct watchpoint *w = (struct watchpoint *) b; | |
6374 | ||
112e8700 | 6375 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6376 | } |
f00aae0f | 6377 | else if (b->location != NULL |
d28cd78a | 6378 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6379 | uiout->field_string ("original-location", |
d28cd78a | 6380 | event_location_to_string (b->location.get ())); |
d24317b4 | 6381 | } |
c4093a6a | 6382 | } |
c5aa993b | 6383 | |
13674803 SM |
6384 | /* See breakpoint.h. */ |
6385 | ||
6386 | bool fix_multi_location_breakpoint_output_globally = false; | |
6387 | ||
0d381245 VP |
6388 | static void |
6389 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6390 | struct bp_location **last_loc, |
6c95b8df | 6391 | int allflag) |
0d381245 | 6392 | { |
79a45e25 | 6393 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6394 | bool use_fixed_output |
6395 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6396 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6397 | |
b4be1b06 | 6398 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6399 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6400 | |
b4be1b06 SM |
6401 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6402 | are outside. */ | |
6403 | if (!use_fixed_output) | |
6404 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6405 | |
6406 | /* If this breakpoint has custom print function, | |
6407 | it's already printed. Otherwise, print individual | |
6408 | locations, if any. */ | |
a38118e5 PA |
6409 | if (b->ops == NULL |
6410 | || b->ops->print_one == NULL | |
6411 | || allflag) | |
0d381245 | 6412 | { |
4a64f543 MS |
6413 | /* If breakpoint has a single location that is disabled, we |
6414 | print it as if it had several locations, since otherwise it's | |
6415 | hard to represent "breakpoint enabled, location disabled" | |
6416 | situation. | |
6417 | ||
6418 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6419 | internally, that's not a property exposed to users. |
6420 | ||
6421 | Likewise, while catchpoints may be implemented with | |
6422 | breakpoints (e.g., catch throw), that's not a property | |
6423 | exposed to users. We do however display the internal | |
6424 | breakpoint locations with "maint info breakpoints". */ | |
6425 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6426 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6427 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6428 | && (allflag |
b5fa468f TBA |
6429 | || (b->loc && (b->loc->next |
6430 | || !b->loc->enabled | |
6431 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6432 | { |
b4be1b06 SM |
6433 | gdb::optional<ui_out_emit_list> locations_list; |
6434 | ||
6435 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6436 | MI record. For later versions, place breakpoint locations in a | |
6437 | list. */ | |
6438 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6439 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6440 | |
b4be1b06 | 6441 | int n = 1; |
40cb8ca5 | 6442 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6443 | { |
b4be1b06 | 6444 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6445 | print_one_breakpoint_location (b, loc, n, last_loc, |
6446 | allflag, allflag); | |
40cb8ca5 | 6447 | n++; |
8d3788bd | 6448 | } |
0d381245 VP |
6449 | } |
6450 | } | |
6451 | } | |
6452 | ||
a6d9a66e UW |
6453 | static int |
6454 | breakpoint_address_bits (struct breakpoint *b) | |
6455 | { | |
6456 | int print_address_bits = 0; | |
a6d9a66e | 6457 | |
c6d81124 PA |
6458 | /* Software watchpoints that aren't watching memory don't have an |
6459 | address to print. */ | |
6460 | if (is_no_memory_software_watchpoint (b)) | |
6461 | return 0; | |
6462 | ||
40cb8ca5 | 6463 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6464 | { |
c7437ca6 PA |
6465 | int addr_bit; |
6466 | ||
c7437ca6 | 6467 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6468 | if (addr_bit > print_address_bits) |
6469 | print_address_bits = addr_bit; | |
6470 | } | |
6471 | ||
6472 | return print_address_bits; | |
6473 | } | |
0d381245 | 6474 | |
65630365 | 6475 | /* See breakpoint.h. */ |
c5aa993b | 6476 | |
65630365 PA |
6477 | void |
6478 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6479 | { |
a6d9a66e | 6480 | struct bp_location *dummy_loc = NULL; |
65630365 | 6481 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6482 | } |
c5aa993b | 6483 | |
09d682a4 TT |
6484 | /* Return true if this breakpoint was set by the user, false if it is |
6485 | internal or momentary. */ | |
6486 | ||
6487 | int | |
6488 | user_breakpoint_p (struct breakpoint *b) | |
6489 | { | |
46c6471b | 6490 | return b->number > 0; |
09d682a4 TT |
6491 | } |
6492 | ||
93daf339 TT |
6493 | /* See breakpoint.h. */ |
6494 | ||
6495 | int | |
6496 | pending_breakpoint_p (struct breakpoint *b) | |
6497 | { | |
6498 | return b->loc == NULL; | |
6499 | } | |
6500 | ||
5c458ae8 SM |
6501 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6502 | ||
6503 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6504 | understood by number_or_range_parser. Only breakpoints included in this | |
6505 | list are then printed. | |
6506 | ||
6507 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6508 | ||
6509 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6510 | ones for which it returns true. | |
6511 | ||
6512 | Return the total number of breakpoints listed. */ | |
c906108c | 6513 | |
d77f58be | 6514 | static int |
5c458ae8 | 6515 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6516 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6517 | { |
a6d9a66e | 6518 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6519 | int nr_printable_breakpoints; |
79a45b7d | 6520 | struct value_print_options opts; |
a6d9a66e | 6521 | int print_address_bits = 0; |
269b11a2 | 6522 | int print_type_col_width = 14; |
79a45e25 | 6523 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6524 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6525 | |
79a45b7d TT |
6526 | get_user_print_options (&opts); |
6527 | ||
4a64f543 MS |
6528 | /* Compute the number of rows in the table, as well as the size |
6529 | required for address fields. */ | |
7f3b0473 | 6530 | nr_printable_breakpoints = 0; |
43892fdf | 6531 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6532 | { |
6533 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6534 | if (filter && !filter (b)) | |
6535 | continue; | |
6536 | ||
5c458ae8 | 6537 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6538 | accept. Skip the others. */ |
5c458ae8 | 6539 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6540 | { |
5c458ae8 | 6541 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6542 | continue; |
5c458ae8 | 6543 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6544 | continue; |
6545 | } | |
269b11a2 | 6546 | |
5c458ae8 | 6547 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6548 | { |
6549 | int addr_bit, type_len; | |
a6d9a66e | 6550 | |
e5a67952 MS |
6551 | addr_bit = breakpoint_address_bits (b); |
6552 | if (addr_bit > print_address_bits) | |
6553 | print_address_bits = addr_bit; | |
269b11a2 | 6554 | |
e5a67952 MS |
6555 | type_len = strlen (bptype_string (b->type)); |
6556 | if (type_len > print_type_col_width) | |
6557 | print_type_col_width = type_len; | |
6558 | ||
6559 | nr_printable_breakpoints++; | |
6560 | } | |
6561 | } | |
7f3b0473 | 6562 | |
4a2b031d TT |
6563 | { |
6564 | ui_out_emit_table table_emitter (uiout, | |
6565 | opts.addressprint ? 6 : 5, | |
6566 | nr_printable_breakpoints, | |
6567 | "BreakpointTable"); | |
6568 | ||
6569 | if (nr_printable_breakpoints > 0) | |
6570 | annotate_breakpoints_headers (); | |
6571 | if (nr_printable_breakpoints > 0) | |
6572 | annotate_field (0); | |
6573 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6574 | if (nr_printable_breakpoints > 0) | |
6575 | annotate_field (1); | |
6576 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6577 | if (nr_printable_breakpoints > 0) | |
6578 | annotate_field (2); | |
6579 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6580 | if (nr_printable_breakpoints > 0) | |
6581 | annotate_field (3); | |
6582 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6583 | if (opts.addressprint) | |
6584 | { | |
6585 | if (nr_printable_breakpoints > 0) | |
6586 | annotate_field (4); | |
6587 | if (print_address_bits <= 32) | |
6588 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6589 | else | |
6590 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6591 | } | |
6592 | if (nr_printable_breakpoints > 0) | |
6593 | annotate_field (5); | |
6594 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6595 | uiout->table_body (); | |
6596 | if (nr_printable_breakpoints > 0) | |
6597 | annotate_breakpoints_table (); | |
6598 | ||
43892fdf | 6599 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6600 | { |
6601 | QUIT; | |
6602 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6603 | if (filter && !filter (b)) | |
6604 | continue; | |
e5a67952 | 6605 | |
5c458ae8 | 6606 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6607 | accept. Skip the others. */ |
e5a67952 | 6608 | |
5c458ae8 | 6609 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6610 | { |
5c458ae8 | 6611 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6612 | { |
5c458ae8 | 6613 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6614 | continue; |
6615 | } | |
6616 | else /* all others */ | |
6617 | { | |
5c458ae8 | 6618 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6619 | continue; |
6620 | } | |
6621 | } | |
6622 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6623 | show_internal is set. */ |
6624 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6625 | { |
6626 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6627 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6628 | if (loc->disabled_by_cond) |
6629 | has_disabled_by_cond_location = true; | |
6630 | } | |
4a2b031d TT |
6631 | } |
6632 | } | |
698384cd | 6633 | |
7f3b0473 | 6634 | if (nr_printable_breakpoints == 0) |
c906108c | 6635 | { |
4a64f543 MS |
6636 | /* If there's a filter, let the caller decide how to report |
6637 | empty list. */ | |
d77f58be SS |
6638 | if (!filter) |
6639 | { | |
5c458ae8 | 6640 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6641 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6642 | else |
112e8700 | 6643 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6644 | bp_num_list); |
d77f58be | 6645 | } |
c906108c SS |
6646 | } |
6647 | else | |
c4093a6a | 6648 | { |
a6d9a66e UW |
6649 | if (last_loc && !server_command) |
6650 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6651 | |
85c88e2a | 6652 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6653 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6654 | "location.\n")); | |
c4093a6a | 6655 | } |
c906108c | 6656 | |
4a64f543 | 6657 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6658 | there have been breakpoints? */ |
c906108c | 6659 | annotate_breakpoints_table_end (); |
d77f58be SS |
6660 | |
6661 | return nr_printable_breakpoints; | |
c906108c SS |
6662 | } |
6663 | ||
ad443146 SS |
6664 | /* Display the value of default-collect in a way that is generally |
6665 | compatible with the breakpoint list. */ | |
6666 | ||
6667 | static void | |
6668 | default_collect_info (void) | |
6669 | { | |
79a45e25 PA |
6670 | struct ui_out *uiout = current_uiout; |
6671 | ||
ad443146 SS |
6672 | /* If it has no value (which is frequently the case), say nothing; a |
6673 | message like "No default-collect." gets in user's face when it's | |
6674 | not wanted. */ | |
6675 | if (!*default_collect) | |
6676 | return; | |
6677 | ||
6678 | /* The following phrase lines up nicely with per-tracepoint collect | |
6679 | actions. */ | |
112e8700 SM |
6680 | uiout->text ("default collect "); |
6681 | uiout->field_string ("default-collect", default_collect); | |
6682 | uiout->text (" \n"); | |
ad443146 SS |
6683 | } |
6684 | ||
c906108c | 6685 | static void |
0b39b52e | 6686 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6687 | { |
5c458ae8 | 6688 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6689 | |
6690 | default_collect_info (); | |
d77f58be SS |
6691 | } |
6692 | ||
6693 | static void | |
1d12d88f | 6694 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6695 | { |
5c458ae8 | 6696 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6697 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6698 | |
6699 | if (num_printed == 0) | |
6700 | { | |
e5a67952 | 6701 | if (args == NULL || *args == '\0') |
112e8700 | 6702 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6703 | else |
112e8700 | 6704 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6705 | } |
c906108c SS |
6706 | } |
6707 | ||
7a292a7a | 6708 | static void |
4495129a | 6709 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6710 | { |
5c458ae8 | 6711 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6712 | |
6713 | default_collect_info (); | |
c906108c SS |
6714 | } |
6715 | ||
0d381245 | 6716 | static int |
714835d5 | 6717 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6718 | struct program_space *pspace, |
714835d5 | 6719 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 6720 | { |
40cb8ca5 | 6721 | for (bp_location *bl : b->locations ()) |
0d381245 | 6722 | { |
6c95b8df PA |
6723 | if (bl->pspace == pspace |
6724 | && bl->address == pc | |
0d381245 VP |
6725 | && (!overlay_debugging || bl->section == section)) |
6726 | return 1; | |
6727 | } | |
6728 | return 0; | |
6729 | } | |
6730 | ||
672f9b60 | 6731 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6732 | concerns with logical breakpoints, so we match program spaces, not |
6733 | address spaces. */ | |
c906108c SS |
6734 | |
6735 | static void | |
6c95b8df PA |
6736 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6737 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6738 | struct obj_section *section, int thread) |
c906108c | 6739 | { |
52f0bd74 | 6740 | int others = 0; |
c906108c | 6741 | |
43892fdf | 6742 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6743 | others += (user_breakpoint_p (b) |
dda83cd7 | 6744 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 6745 | |
c906108c SS |
6746 | if (others > 0) |
6747 | { | |
a3f17187 AC |
6748 | if (others == 1) |
6749 | printf_filtered (_("Note: breakpoint ")); | |
6750 | else /* if (others == ???) */ | |
6751 | printf_filtered (_("Note: breakpoints ")); | |
43892fdf | 6752 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6753 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6754 | { |
6755 | others--; | |
6756 | printf_filtered ("%d", b->number); | |
6757 | if (b->thread == -1 && thread != -1) | |
6758 | printf_filtered (" (all threads)"); | |
6759 | else if (b->thread != -1) | |
6760 | printf_filtered (" (thread %d)", b->thread); | |
6761 | printf_filtered ("%s%s ", | |
059fb39f | 6762 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6763 | || b->enable_state == bp_call_disabled) |
0d381245 | 6764 | ? " (disabled)" |
0d381245 VP |
6765 | : ""), |
6766 | (others > 1) ? "," | |
6767 | : ((others == 1) ? " and" : "")); | |
6768 | } | |
6a831f06 PA |
6769 | current_uiout->message (_("also set at pc %ps.\n"), |
6770 | styled_string (address_style.style (), | |
6771 | paddress (gdbarch, pc))); | |
c906108c SS |
6772 | } |
6773 | } | |
6774 | \f | |
c906108c | 6775 | |
cb1e4e32 PA |
6776 | /* Return true iff it is meaningful to use the address member of LOC. |
6777 | For some breakpoint types, the locations' address members are | |
6778 | irrelevant and it makes no sense to attempt to compare them to | |
6779 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6780 | |
cb1e4e32 PA |
6781 | More specifically, software watchpoints and catchpoints that are |
6782 | not backed by breakpoints always have a zero valued location | |
6783 | address and we don't want to mark breakpoints of any of these types | |
6784 | to be a duplicate of an actual breakpoint location at address | |
6785 | zero. */ | |
e4f237da | 6786 | |
cb1e4e32 PA |
6787 | static bool |
6788 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6789 | { |
cb1e4e32 | 6790 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6791 | } |
6792 | ||
6793 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6794 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6795 | ||
6796 | static int | |
4a64f543 MS |
6797 | watchpoint_locations_match (struct bp_location *loc1, |
6798 | struct bp_location *loc2) | |
2d134ed3 | 6799 | { |
3a5c3e22 PA |
6800 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6801 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6802 | ||
6803 | /* Both of them must exist. */ | |
6804 | gdb_assert (w1 != NULL); | |
6805 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6806 | |
4a64f543 MS |
6807 | /* If the target can evaluate the condition expression in hardware, |
6808 | then we we need to insert both watchpoints even if they are at | |
6809 | the same place. Otherwise the watchpoint will only trigger when | |
6810 | the condition of whichever watchpoint was inserted evaluates to | |
6811 | true, not giving a chance for GDB to check the condition of the | |
6812 | other watchpoint. */ | |
3a5c3e22 | 6813 | if ((w1->cond_exp |
4a64f543 MS |
6814 | && target_can_accel_watchpoint_condition (loc1->address, |
6815 | loc1->length, | |
0cf6dd15 | 6816 | loc1->watchpoint_type, |
4d01a485 | 6817 | w1->cond_exp.get ())) |
3a5c3e22 | 6818 | || (w2->cond_exp |
4a64f543 MS |
6819 | && target_can_accel_watchpoint_condition (loc2->address, |
6820 | loc2->length, | |
0cf6dd15 | 6821 | loc2->watchpoint_type, |
4d01a485 | 6822 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6823 | return 0; |
6824 | ||
85d721b8 PA |
6825 | /* Note that this checks the owner's type, not the location's. In |
6826 | case the target does not support read watchpoints, but does | |
6827 | support access watchpoints, we'll have bp_read_watchpoint | |
6828 | watchpoints with hw_access locations. Those should be considered | |
6829 | duplicates of hw_read locations. The hw_read locations will | |
6830 | become hw_access locations later. */ | |
2d134ed3 PA |
6831 | return (loc1->owner->type == loc2->owner->type |
6832 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6833 | && loc1->address == loc2->address | |
6834 | && loc1->length == loc2->length); | |
e4f237da KB |
6835 | } |
6836 | ||
31e77af2 | 6837 | /* See breakpoint.h. */ |
6c95b8df | 6838 | |
31e77af2 | 6839 | int |
accd0bcd YQ |
6840 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6841 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6842 | { |
f5656ead | 6843 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6844 | || aspace1 == aspace2) |
6845 | && addr1 == addr2); | |
6846 | } | |
6847 | ||
f1310107 TJB |
6848 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6849 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6850 | matches ASPACE2. On targets that have global breakpoints, the address | |
6851 | space doesn't really matter. */ | |
6852 | ||
6853 | static int | |
accd0bcd YQ |
6854 | breakpoint_address_match_range (const address_space *aspace1, |
6855 | CORE_ADDR addr1, | |
6856 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6857 | CORE_ADDR addr2) |
6858 | { | |
f5656ead | 6859 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6860 | || aspace1 == aspace2) |
6861 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6862 | } | |
6863 | ||
6864 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6865 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6866 | matches the breakpoint's address space. On targets that have global | |
6867 | breakpoints, the address space doesn't really matter. */ | |
6868 | ||
6869 | static int | |
6870 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6871 | const address_space *aspace, |
f1310107 TJB |
6872 | CORE_ADDR addr) |
6873 | { | |
6874 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6875 | aspace, addr) | |
6876 | || (bl->length | |
6877 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6878 | bl->address, bl->length, | |
6879 | aspace, addr))); | |
6880 | } | |
6881 | ||
d35ae833 PA |
6882 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6883 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6884 | match happens only if ASPACE matches the breakpoint's address | |
6885 | space. On targets that have global breakpoints, the address space | |
6886 | doesn't really matter. */ | |
6887 | ||
6888 | static int | |
6889 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6890 | const address_space *aspace, |
d35ae833 PA |
6891 | CORE_ADDR addr, int len) |
6892 | { | |
6893 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6894 | || bl->pspace->aspace == aspace) | |
6895 | { | |
6896 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6897 | ||
6898 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6899 | return 1; | |
6900 | } | |
6901 | return 0; | |
6902 | } | |
6903 | ||
1e4d1764 YQ |
6904 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6905 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6906 | true, otherwise returns false. */ | |
6907 | ||
6908 | static int | |
6909 | tracepoint_locations_match (struct bp_location *loc1, | |
6910 | struct bp_location *loc2) | |
6911 | { | |
6912 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6913 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6914 | locations at the same address of different tracepoints are regarded as | |
6915 | different locations. */ | |
6916 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6917 | else | |
6918 | return 0; | |
6919 | } | |
6920 | ||
2d134ed3 | 6921 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 6922 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
6923 | the same location. If SW_HW_BPS_MATCH is true, then software |
6924 | breakpoint locations and hardware breakpoint locations match, | |
6925 | otherwise they don't. */ | |
2d134ed3 PA |
6926 | |
6927 | static int | |
7f32a4d5 PA |
6928 | breakpoint_locations_match (struct bp_location *loc1, |
6929 | struct bp_location *loc2, | |
6930 | bool sw_hw_bps_match) | |
2d134ed3 | 6931 | { |
2bdf28a0 JK |
6932 | int hw_point1, hw_point2; |
6933 | ||
6934 | /* Both of them must not be in moribund_locations. */ | |
6935 | gdb_assert (loc1->owner != NULL); | |
6936 | gdb_assert (loc2->owner != NULL); | |
6937 | ||
6938 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6939 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6940 | |
6941 | if (hw_point1 != hw_point2) | |
6942 | return 0; | |
6943 | else if (hw_point1) | |
6944 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6945 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6946 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6947 | else |
7f32a4d5 PA |
6948 | /* We compare bp_location.length in order to cover ranged |
6949 | breakpoints. Keep this in sync with | |
6950 | bp_location_is_less_than. */ | |
f1310107 TJB |
6951 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
6952 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 6953 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 6954 | && loc1->length == loc2->length); |
2d134ed3 PA |
6955 | } |
6956 | ||
76897487 KB |
6957 | static void |
6958 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 6959 | int bnum, int have_bnum) |
76897487 | 6960 | { |
f63fbe86 MS |
6961 | /* The longest string possibly returned by hex_string_custom |
6962 | is 50 chars. These must be at least that big for safety. */ | |
6963 | char astr1[64]; | |
6964 | char astr2[64]; | |
76897487 | 6965 | |
bb599908 PH |
6966 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6967 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6968 | if (have_bnum) |
8a3fe4f8 | 6969 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 6970 | bnum, astr1, astr2); |
76897487 | 6971 | else |
8a3fe4f8 | 6972 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6973 | } |
6974 | ||
4a64f543 MS |
6975 | /* Adjust a breakpoint's address to account for architectural |
6976 | constraints on breakpoint placement. Return the adjusted address. | |
6977 | Note: Very few targets require this kind of adjustment. For most | |
6978 | targets, this function is simply the identity function. */ | |
76897487 KB |
6979 | |
6980 | static CORE_ADDR | |
a6d9a66e UW |
6981 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6982 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6983 | { |
a0de8c21 YQ |
6984 | if (bptype == bp_watchpoint |
6985 | || bptype == bp_hardware_watchpoint | |
6986 | || bptype == bp_read_watchpoint | |
6987 | || bptype == bp_access_watchpoint | |
6988 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6989 | { |
6990 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 6991 | have their addresses modified. */ |
88f7da05 KB |
6992 | return bpaddr; |
6993 | } | |
7c16b83e PA |
6994 | else if (bptype == bp_single_step) |
6995 | { | |
6996 | /* Single-step breakpoints should not have their addresses | |
6997 | modified. If there's any architectural constrain that | |
6998 | applies to this address, then it should have already been | |
6999 | taken into account when the breakpoint was created in the | |
7000 | first place. If we didn't do this, stepping through e.g., | |
7001 | Thumb-2 IT blocks would break. */ | |
7002 | return bpaddr; | |
7003 | } | |
76897487 KB |
7004 | else |
7005 | { | |
a0de8c21 YQ |
7006 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7007 | ||
7008 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7009 | { | |
7010 | /* Some targets have architectural constraints on the placement | |
7011 | of breakpoint instructions. Obtain the adjusted address. */ | |
7012 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7013 | } | |
76897487 | 7014 | |
a0de8c21 | 7015 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7016 | |
7017 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7018 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7019 | is required. */ |
7020 | if (adjusted_bpaddr != bpaddr) | |
7021 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7022 | ||
7023 | return adjusted_bpaddr; | |
7024 | } | |
7025 | } | |
7026 | ||
cb1e4e32 PA |
7027 | static bp_loc_type |
7028 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7029 | { |
cb1e4e32 | 7030 | switch (type) |
e049a4b5 DJ |
7031 | { |
7032 | case bp_breakpoint: | |
7c16b83e | 7033 | case bp_single_step: |
e049a4b5 DJ |
7034 | case bp_until: |
7035 | case bp_finish: | |
7036 | case bp_longjmp: | |
7037 | case bp_longjmp_resume: | |
e2e4d78b | 7038 | case bp_longjmp_call_dummy: |
186c406b TT |
7039 | case bp_exception: |
7040 | case bp_exception_resume: | |
e049a4b5 | 7041 | case bp_step_resume: |
2c03e5be | 7042 | case bp_hp_step_resume: |
e049a4b5 DJ |
7043 | case bp_watchpoint_scope: |
7044 | case bp_call_dummy: | |
aa7d318d | 7045 | case bp_std_terminate: |
e049a4b5 DJ |
7046 | case bp_shlib_event: |
7047 | case bp_thread_event: | |
7048 | case bp_overlay_event: | |
4efc6507 | 7049 | case bp_jit_event: |
0fd8e87f | 7050 | case bp_longjmp_master: |
aa7d318d | 7051 | case bp_std_terminate_master: |
186c406b | 7052 | case bp_exception_master: |
0e30163f JK |
7053 | case bp_gnu_ifunc_resolver: |
7054 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7055 | case bp_dprintf: |
cb1e4e32 | 7056 | return bp_loc_software_breakpoint; |
e049a4b5 | 7057 | case bp_hardware_breakpoint: |
cb1e4e32 | 7058 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7059 | case bp_hardware_watchpoint: |
7060 | case bp_read_watchpoint: | |
7061 | case bp_access_watchpoint: | |
cb1e4e32 | 7062 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7063 | case bp_watchpoint: |
ce78b96d | 7064 | case bp_catchpoint: |
15c3d785 PA |
7065 | case bp_tracepoint: |
7066 | case bp_fast_tracepoint: | |
0fb4aa4b | 7067 | case bp_static_tracepoint: |
cb1e4e32 | 7068 | return bp_loc_other; |
e049a4b5 | 7069 | default: |
e2e0b3e5 | 7070 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7071 | } |
cb1e4e32 PA |
7072 | } |
7073 | ||
7074 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7075 | { | |
7076 | this->owner = owner; | |
7077 | this->cond_bytecode = NULL; | |
7078 | this->shlib_disabled = 0; | |
7079 | this->enabled = 1; | |
b5fa468f | 7080 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7081 | |
7082 | this->loc_type = type; | |
e049a4b5 | 7083 | |
cb1e4e32 PA |
7084 | if (this->loc_type == bp_loc_software_breakpoint |
7085 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7086 | mark_breakpoint_location_modified (this); | |
7087 | ||
b6433ede | 7088 | incref (); |
cb1e4e32 PA |
7089 | } |
7090 | ||
7091 | bp_location::bp_location (breakpoint *owner) | |
7092 | : bp_location::bp_location (owner, | |
7093 | bp_location_from_bp_type (owner->type)) | |
7094 | { | |
28010a5d PA |
7095 | } |
7096 | ||
7097 | /* Allocate a struct bp_location. */ | |
7098 | ||
7099 | static struct bp_location * | |
7100 | allocate_bp_location (struct breakpoint *bpt) | |
7101 | { | |
348d480f PA |
7102 | return bpt->ops->allocate_location (bpt); |
7103 | } | |
7cc221ef | 7104 | |
f431efe5 PA |
7105 | /* Decrement reference count. If the reference count reaches 0, |
7106 | destroy the bp_location. Sets *BLP to NULL. */ | |
7107 | ||
7108 | static void | |
7109 | decref_bp_location (struct bp_location **blp) | |
7110 | { | |
b6433ede | 7111 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7112 | *blp = NULL; |
7113 | } | |
7114 | ||
346774a9 | 7115 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7116 | |
b270e6f9 TT |
7117 | static breakpoint * |
7118 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7119 | { |
346774a9 | 7120 | struct breakpoint *b1; |
b270e6f9 | 7121 | struct breakpoint *result = b.get (); |
c906108c | 7122 | |
346774a9 PA |
7123 | /* Add this breakpoint to the end of the chain so that a list of |
7124 | breakpoints will come out in order of increasing numbers. */ | |
7125 | ||
7126 | b1 = breakpoint_chain; | |
7127 | if (b1 == 0) | |
b270e6f9 | 7128 | breakpoint_chain = b.release (); |
346774a9 PA |
7129 | else |
7130 | { | |
7131 | while (b1->next) | |
7132 | b1 = b1->next; | |
b270e6f9 | 7133 | b1->next = b.release (); |
346774a9 | 7134 | } |
b270e6f9 TT |
7135 | |
7136 | return result; | |
346774a9 PA |
7137 | } |
7138 | ||
7139 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7140 | ||
7141 | static void | |
7142 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7143 | struct gdbarch *gdbarch, | |
28010a5d | 7144 | enum bptype bptype, |
c0a91b2b | 7145 | const struct breakpoint_ops *ops) |
346774a9 | 7146 | { |
348d480f PA |
7147 | gdb_assert (ops != NULL); |
7148 | ||
28010a5d | 7149 | b->ops = ops; |
4d28f7a8 | 7150 | b->type = bptype; |
a6d9a66e | 7151 | b->gdbarch = gdbarch; |
c906108c SS |
7152 | b->language = current_language->la_language; |
7153 | b->input_radix = input_radix; | |
d0fb5eae | 7154 | b->related_breakpoint = b; |
346774a9 PA |
7155 | } |
7156 | ||
7157 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7158 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7159 | |
7160 | static struct breakpoint * | |
7161 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7162 | enum bptype bptype, |
c0a91b2b | 7163 | const struct breakpoint_ops *ops) |
346774a9 | 7164 | { |
3b0871f4 | 7165 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7166 | |
3b0871f4 | 7167 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7168 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7169 | } |
7170 | ||
0ba852ab | 7171 | /* Initialize loc->function_name. */ |
0e30163f | 7172 | |
0d381245 | 7173 | static void |
0ba852ab | 7174 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7175 | { |
2bdf28a0 JK |
7176 | gdb_assert (loc->owner != NULL); |
7177 | ||
0d381245 | 7178 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7179 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7180 | || is_tracepoint (loc->owner)) |
0d381245 | 7181 | { |
2c02bd72 | 7182 | const char *function_name; |
0e30163f | 7183 | |
3467ec66 | 7184 | if (loc->msymbol != NULL |
f50776aa | 7185 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7186 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7187 | { |
7188 | struct breakpoint *b = loc->owner; | |
7189 | ||
c9d95fa3 | 7190 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7191 | |
7192 | if (b->type == bp_breakpoint && b->loc == loc | |
7193 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7194 | { |
7195 | /* Create only the whole new breakpoint of this type but do not | |
7196 | mess more complicated breakpoints with multiple locations. */ | |
7197 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7198 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7199 | breakpoint. */ |
3467ec66 | 7200 | loc->related_address = loc->address; |
0e30163f JK |
7201 | } |
7202 | } | |
3467ec66 PA |
7203 | else |
7204 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7205 | |
2c02bd72 DE |
7206 | if (function_name) |
7207 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7208 | } |
7209 | } | |
7210 | ||
a6d9a66e | 7211 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7212 | struct gdbarch * |
a6d9a66e UW |
7213 | get_sal_arch (struct symtab_and_line sal) |
7214 | { | |
7215 | if (sal.section) | |
08feed99 | 7216 | return sal.section->objfile->arch (); |
a6d9a66e | 7217 | if (sal.symtab) |
08feed99 | 7218 | return SYMTAB_OBJFILE (sal.symtab)->arch (); |
a6d9a66e UW |
7219 | |
7220 | return NULL; | |
7221 | } | |
7222 | ||
346774a9 PA |
7223 | /* Low level routine for partially initializing a breakpoint of type |
7224 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7225 | file name, and line number are provided by SAL. |
0d381245 VP |
7226 | |
7227 | It is expected that the caller will complete the initialization of | |
7228 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7229 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7230 | |
346774a9 PA |
7231 | static void |
7232 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7233 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7234 | const struct breakpoint_ops *ops) |
0d381245 | 7235 | { |
28010a5d | 7236 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7237 | |
3742cc8b | 7238 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7239 | |
6c95b8df PA |
7240 | if (bptype != bp_catchpoint) |
7241 | gdb_assert (sal.pspace != NULL); | |
7242 | ||
f8eba3c6 TT |
7243 | /* Store the program space that was used to set the breakpoint, |
7244 | except for ordinary breakpoints, which are independent of the | |
7245 | program space. */ | |
7246 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7247 | b->pspace = sal.pspace; | |
346774a9 | 7248 | } |
c906108c | 7249 | |
346774a9 PA |
7250 | /* set_raw_breakpoint is a low level routine for allocating and |
7251 | partially initializing a breakpoint of type BPTYPE. The newly | |
7252 | created breakpoint's address, section, source file name, and line | |
7253 | number are provided by SAL. The newly created and partially | |
7254 | initialized breakpoint is added to the breakpoint chain and | |
7255 | is also returned as the value of this function. | |
7256 | ||
7257 | It is expected that the caller will complete the initialization of | |
7258 | the newly created breakpoint struct as well as output any status | |
7259 | information regarding the creation of a new breakpoint. In | |
7260 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7261 | number! Care should be taken to not allow an error to occur | |
7262 | prior to completing the initialization of the breakpoint. If this | |
7263 | should happen, a bogus breakpoint will be left on the chain. */ | |
7264 | ||
7265 | struct breakpoint * | |
7266 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7267 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7268 | const struct breakpoint_ops *ops) |
346774a9 | 7269 | { |
3b0871f4 | 7270 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7271 | |
3b0871f4 | 7272 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7273 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7274 | } |
7275 | ||
53a5351d | 7276 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7277 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7278 | initiated the operation. */ | |
c906108c SS |
7279 | |
7280 | void | |
186c406b | 7281 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7282 | { |
5d5658a1 | 7283 | int thread = tp->global_num; |
0fd8e87f UW |
7284 | |
7285 | /* To avoid having to rescan all objfile symbols at every step, | |
7286 | we maintain a list of continually-inserted but always disabled | |
7287 | longjmp "master" breakpoints. Here, we simply create momentary | |
7288 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7289 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7290 | if (b->pspace == current_program_space |
186c406b TT |
7291 | && (b->type == bp_longjmp_master |
7292 | || b->type == bp_exception_master)) | |
0fd8e87f | 7293 | { |
06edf0c0 PA |
7294 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7295 | struct breakpoint *clone; | |
cc59ec59 | 7296 | |
e2e4d78b JK |
7297 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7298 | after their removal. */ | |
06edf0c0 | 7299 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7300 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7301 | clone->thread = thread; |
7302 | } | |
186c406b TT |
7303 | |
7304 | tp->initiating_frame = frame; | |
c906108c SS |
7305 | } |
7306 | ||
611c83ae | 7307 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7308 | void |
611c83ae | 7309 | delete_longjmp_breakpoint (int thread) |
c906108c | 7310 | { |
1428b37a | 7311 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7312 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7313 | { |
7314 | if (b->thread == thread) | |
7315 | delete_breakpoint (b); | |
7316 | } | |
c906108c SS |
7317 | } |
7318 | ||
f59f708a PA |
7319 | void |
7320 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7321 | { | |
1428b37a | 7322 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7323 | if (b->type == bp_longjmp || b->type == bp_exception) |
7324 | { | |
7325 | if (b->thread == thread) | |
7326 | b->disposition = disp_del_at_next_stop; | |
7327 | } | |
7328 | } | |
7329 | ||
e2e4d78b JK |
7330 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7331 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7332 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7333 | breakpoints. */ | |
7334 | ||
7335 | struct breakpoint * | |
7336 | set_longjmp_breakpoint_for_call_dummy (void) | |
7337 | { | |
43892fdf | 7338 | breakpoint *retval = nullptr; |
e2e4d78b | 7339 | |
43892fdf | 7340 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7341 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7342 | { | |
7343 | struct breakpoint *new_b; | |
7344 | ||
7345 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7346 | &momentary_breakpoint_ops, |
7347 | 1); | |
00431a78 | 7348 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7349 | |
7350 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7351 | ||
7352 | gdb_assert (new_b->related_breakpoint == new_b); | |
7353 | if (retval == NULL) | |
7354 | retval = new_b; | |
7355 | new_b->related_breakpoint = retval; | |
7356 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7357 | retval = retval->related_breakpoint; | |
7358 | retval->related_breakpoint = new_b; | |
7359 | } | |
7360 | ||
7361 | return retval; | |
7362 | } | |
7363 | ||
7364 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7365 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7366 | stack. |
7367 | ||
b4b3e2de AB |
7368 | If the unwind fails then there is not sufficient information to discard |
7369 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7370 | be cleaned up next time this function is called from a location where | |
7371 | unwinding is possible. */ | |
e2e4d78b JK |
7372 | |
7373 | void | |
b67a2c6f | 7374 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7375 | { |
7376 | struct breakpoint *b, *b_tmp; | |
7377 | ||
7378 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7379 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7380 | { |
7381 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7382 | ||
b4b3e2de AB |
7383 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7384 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7385 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7386 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7387 | |
7388 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7389 | more to do. Or, if the dummy frame associated with the | |
7390 | bp_call_dummy is still on the stack then we need to leave this | |
7391 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7392 | if (dummy_b->type != bp_call_dummy |
7393 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7394 | continue; | |
b4b3e2de AB |
7395 | |
7396 | /* We didn't find the dummy frame on the stack, this could be | |
7397 | because we have longjmp'd to a stack frame that is previous to | |
7398 | the dummy frame, or it could be because the stack unwind is | |
7399 | broken at some point between the longjmp frame and the dummy | |
7400 | frame. | |
7401 | ||
7402 | Next we figure out why the stack unwind stopped. If it looks | |
7403 | like the unwind is complete then we assume the dummy frame has | |
7404 | been jumped over, however, if the unwind stopped for an | |
7405 | unexpected reason then we assume the stack unwind is currently | |
7406 | broken, and that we will (eventually) return to the dummy | |
7407 | frame. | |
7408 | ||
7409 | It might be tempting to consider using frame_id_inner here, but | |
7410 | that is not safe. There is no guarantee that the stack frames | |
7411 | we are looking at here are even on the same stack as the | |
7412 | original dummy frame, hence frame_id_inner can't be used. See | |
7413 | the comments on frame_id_inner for more details. */ | |
7414 | bool unwind_finished_unexpectedly = false; | |
7415 | for (struct frame_info *fi = get_current_frame (); fi != nullptr; ) | |
7416 | { | |
7417 | struct frame_info *prev = get_prev_frame (fi); | |
7418 | if (prev == nullptr) | |
7419 | { | |
7420 | /* FI is the last stack frame. Why did this frame not | |
7421 | unwind further? */ | |
7422 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7423 | if (stop_reason != UNWIND_NO_REASON | |
7424 | && stop_reason != UNWIND_OUTERMOST) | |
7425 | unwind_finished_unexpectedly = true; | |
7426 | } | |
7427 | fi = prev; | |
7428 | } | |
7429 | if (unwind_finished_unexpectedly) | |
7430 | continue; | |
7431 | ||
00431a78 | 7432 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7433 | |
7434 | while (b->related_breakpoint != b) | |
7435 | { | |
7436 | if (b_tmp == b->related_breakpoint) | |
7437 | b_tmp = b->related_breakpoint->next; | |
7438 | delete_breakpoint (b->related_breakpoint); | |
7439 | } | |
7440 | delete_breakpoint (b); | |
7441 | } | |
7442 | } | |
7443 | ||
1900040c MS |
7444 | void |
7445 | enable_overlay_breakpoints (void) | |
7446 | { | |
43892fdf | 7447 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7448 | if (b->type == bp_overlay_event) |
01add95b SM |
7449 | { |
7450 | b->enable_state = bp_enabled; | |
7451 | update_global_location_list (UGLL_MAY_INSERT); | |
7452 | overlay_events_enabled = 1; | |
7453 | } | |
1900040c MS |
7454 | } |
7455 | ||
7456 | void | |
7457 | disable_overlay_breakpoints (void) | |
7458 | { | |
43892fdf | 7459 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7460 | if (b->type == bp_overlay_event) |
01add95b SM |
7461 | { |
7462 | b->enable_state = bp_disabled; | |
7463 | update_global_location_list (UGLL_DONT_INSERT); | |
7464 | overlay_events_enabled = 0; | |
7465 | } | |
1900040c MS |
7466 | } |
7467 | ||
aa7d318d TT |
7468 | /* Set an active std::terminate breakpoint for each std::terminate |
7469 | master breakpoint. */ | |
7470 | void | |
7471 | set_std_terminate_breakpoint (void) | |
7472 | { | |
1428b37a | 7473 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7474 | if (b->pspace == current_program_space |
7475 | && b->type == bp_std_terminate_master) | |
7476 | { | |
06edf0c0 | 7477 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7478 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7479 | } |
7480 | } | |
7481 | ||
7482 | /* Delete all the std::terminate breakpoints. */ | |
7483 | void | |
7484 | delete_std_terminate_breakpoint (void) | |
7485 | { | |
1428b37a | 7486 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7487 | if (b->type == bp_std_terminate) |
7488 | delete_breakpoint (b); | |
7489 | } | |
7490 | ||
c4093a6a | 7491 | struct breakpoint * |
a6d9a66e | 7492 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7493 | { |
7494 | struct breakpoint *b; | |
c4093a6a | 7495 | |
06edf0c0 PA |
7496 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7497 | &internal_breakpoint_ops); | |
7498 | ||
b5de0fa7 | 7499 | b->enable_state = bp_enabled; |
f00aae0f | 7500 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7501 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7502 | |
44702360 | 7503 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7504 | |
c4093a6a JM |
7505 | return b; |
7506 | } | |
7507 | ||
0101ce28 JJ |
7508 | struct lang_and_radix |
7509 | { | |
7510 | enum language lang; | |
7511 | int radix; | |
7512 | }; | |
7513 | ||
4efc6507 DE |
7514 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7515 | ||
7516 | struct breakpoint * | |
7517 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7518 | { | |
2a7f3dff PA |
7519 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7520 | &internal_breakpoint_ops); | |
4efc6507 | 7521 | } |
0101ce28 | 7522 | |
03673fc7 PP |
7523 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7524 | ||
7525 | void | |
7526 | remove_jit_event_breakpoints (void) | |
7527 | { | |
1428b37a | 7528 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7529 | if (b->type == bp_jit_event |
7530 | && b->loc->pspace == current_program_space) | |
7531 | delete_breakpoint (b); | |
7532 | } | |
7533 | ||
cae688ec JJ |
7534 | void |
7535 | remove_solib_event_breakpoints (void) | |
7536 | { | |
1428b37a | 7537 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7538 | if (b->type == bp_shlib_event |
7539 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7540 | delete_breakpoint (b); |
7541 | } | |
7542 | ||
f37f681c PA |
7543 | /* See breakpoint.h. */ |
7544 | ||
7545 | void | |
7546 | remove_solib_event_breakpoints_at_next_stop (void) | |
7547 | { | |
1428b37a | 7548 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7549 | if (b->type == bp_shlib_event |
7550 | && b->loc->pspace == current_program_space) | |
7551 | b->disposition = disp_del_at_next_stop; | |
7552 | } | |
7553 | ||
04086b45 PA |
7554 | /* Helper for create_solib_event_breakpoint / |
7555 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7556 | INSERT_MODE to pass through to update_global_location_list. */ | |
7557 | ||
7558 | static struct breakpoint * | |
7559 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7560 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7561 | { |
7562 | struct breakpoint *b; | |
7563 | ||
06edf0c0 PA |
7564 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7565 | &internal_breakpoint_ops); | |
04086b45 | 7566 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7567 | return b; |
7568 | } | |
7569 | ||
04086b45 PA |
7570 | struct breakpoint * |
7571 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7572 | { | |
7573 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7574 | } | |
7575 | ||
f37f681c PA |
7576 | /* See breakpoint.h. */ |
7577 | ||
7578 | struct breakpoint * | |
7579 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7580 | { | |
7581 | struct breakpoint *b; | |
7582 | ||
04086b45 PA |
7583 | /* Explicitly tell update_global_location_list to insert |
7584 | locations. */ | |
7585 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7586 | if (!b->loc->inserted) |
7587 | { | |
7588 | delete_breakpoint (b); | |
7589 | return NULL; | |
7590 | } | |
7591 | return b; | |
7592 | } | |
7593 | ||
cae688ec JJ |
7594 | /* Disable any breakpoints that are on code in shared libraries. Only |
7595 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7596 | ||
7597 | void | |
cb851954 | 7598 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7599 | { |
48d7020b | 7600 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7601 | { |
7602 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7603 | struct breakpoint *b = loc->owner; | |
7604 | ||
7605 | /* We apply the check to all breakpoints, including disabled for | |
7606 | those with loc->duplicate set. This is so that when breakpoint | |
7607 | becomes enabled, or the duplicate is removed, gdb will try to | |
7608 | insert all breakpoints. If we don't set shlib_disabled here, | |
7609 | we'll try to insert those breakpoints and fail. */ | |
7610 | if (((b->type == bp_breakpoint) | |
7611 | || (b->type == bp_jit_event) | |
7612 | || (b->type == bp_hardware_breakpoint) | |
7613 | || (is_tracepoint (b))) | |
7614 | && loc->pspace == current_program_space | |
7615 | && !loc->shlib_disabled | |
7616 | && solib_name_from_address (loc->pspace, loc->address) | |
7617 | ) | |
7618 | { | |
7619 | loc->shlib_disabled = 1; | |
7620 | } | |
7621 | } | |
cae688ec JJ |
7622 | } |
7623 | ||
63644780 NB |
7624 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7625 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7626 | disabled ones can just stay disabled. */ | |
84acb35a | 7627 | |
75149521 | 7628 | static void |
84acb35a JJ |
7629 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7630 | { | |
84acb35a JJ |
7631 | int disabled_shlib_breaks = 0; |
7632 | ||
48d7020b | 7633 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7634 | { |
7635 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7636 | struct breakpoint *b = loc->owner; | |
7637 | ||
7638 | if (solib->pspace == loc->pspace | |
7639 | && !loc->shlib_disabled | |
7640 | && (((b->type == bp_breakpoint | |
7641 | || b->type == bp_jit_event | |
7642 | || b->type == bp_hardware_breakpoint) | |
7643 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7644 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7645 | || is_tracepoint (b)) | |
7646 | && solib_contains_address_p (solib, loc->address)) | |
7647 | { | |
7648 | loc->shlib_disabled = 1; | |
7649 | /* At this point, we cannot rely on remove_breakpoint | |
7650 | succeeding so we must mark the breakpoint as not inserted | |
7651 | to prevent future errors occurring in remove_breakpoints. */ | |
7652 | loc->inserted = 0; | |
7653 | ||
7654 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7655 | gdb::observers::breakpoint_modified.notify (b); | |
7656 | ||
7657 | if (!disabled_shlib_breaks) | |
7658 | { | |
7659 | target_terminal::ours_for_output (); | |
7660 | warning (_("Temporarily disabling breakpoints " | |
7661 | "for unloaded shared library \"%s\""), | |
7662 | solib->so_name); | |
7663 | } | |
7664 | disabled_shlib_breaks = 1; | |
7665 | } | |
7666 | } | |
84acb35a JJ |
7667 | } |
7668 | ||
63644780 NB |
7669 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7670 | notification of free_objfile. Only apply to enabled breakpoints, | |
7671 | disabled ones can just stay disabled. */ | |
7672 | ||
7673 | static void | |
7674 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7675 | { | |
63644780 NB |
7676 | if (objfile == NULL) |
7677 | return; | |
7678 | ||
d03de421 PA |
7679 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7680 | managed by the user with add-symbol-file/remove-symbol-file. | |
7681 | Similarly to how breakpoints in shared libraries are handled in | |
7682 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7683 | shlib_disabled so they end up uninserted on the next global |
7684 | location list update. Shared libraries not loaded by the user | |
7685 | aren't handled here -- they're already handled in | |
7686 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7687 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7688 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7689 | main objfile). */ | |
7690 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7691 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7692 | return; |
7693 | ||
43892fdf | 7694 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7695 | { |
63644780 NB |
7696 | int bp_modified = 0; |
7697 | ||
7698 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7699 | continue; | |
7700 | ||
40cb8ca5 | 7701 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7702 | { |
7703 | CORE_ADDR loc_addr = loc->address; | |
7704 | ||
7705 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7706 | && loc->loc_type != bp_loc_software_breakpoint) | |
7707 | continue; | |
7708 | ||
7709 | if (loc->shlib_disabled != 0) | |
7710 | continue; | |
7711 | ||
7712 | if (objfile->pspace != loc->pspace) | |
7713 | continue; | |
7714 | ||
7715 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7716 | && loc->loc_type != bp_loc_software_breakpoint) | |
7717 | continue; | |
7718 | ||
7719 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7720 | { | |
7721 | loc->shlib_disabled = 1; | |
08351840 PA |
7722 | /* At this point, we don't know whether the object was |
7723 | unmapped from the inferior or not, so leave the | |
7724 | inserted flag alone. We'll handle failure to | |
7725 | uninsert quietly, in case the object was indeed | |
7726 | unmapped. */ | |
63644780 NB |
7727 | |
7728 | mark_breakpoint_location_modified (loc); | |
7729 | ||
7730 | bp_modified = 1; | |
7731 | } | |
7732 | } | |
7733 | ||
7734 | if (bp_modified) | |
76727919 | 7735 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7736 | } |
7737 | } | |
7738 | ||
ce78b96d JB |
7739 | /* FORK & VFORK catchpoints. */ |
7740 | ||
e29a4733 | 7741 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7742 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7743 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7744 | |
c1fc2657 | 7745 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7746 | { |
e29a4733 PA |
7747 | /* Process id of a child process whose forking triggered this |
7748 | catchpoint. This field is only valid immediately after this | |
7749 | catchpoint has triggered. */ | |
7750 | ptid_t forked_inferior_pid; | |
7751 | }; | |
7752 | ||
4a64f543 MS |
7753 | /* Implement the "insert" breakpoint_ops method for fork |
7754 | catchpoints. */ | |
ce78b96d | 7755 | |
77b06cd7 TJB |
7756 | static int |
7757 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7758 | { |
e99b03dc | 7759 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7760 | } |
7761 | ||
4a64f543 MS |
7762 | /* Implement the "remove" breakpoint_ops method for fork |
7763 | catchpoints. */ | |
ce78b96d JB |
7764 | |
7765 | static int | |
73971819 | 7766 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7767 | { |
e99b03dc | 7768 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7769 | } |
7770 | ||
7771 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7772 | catchpoints. */ | |
7773 | ||
7774 | static int | |
f1310107 | 7775 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7776 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7777 | const struct target_waitstatus *ws) |
ce78b96d | 7778 | { |
e29a4733 PA |
7779 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7780 | ||
f90263c1 TT |
7781 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7782 | return 0; | |
7783 | ||
7784 | c->forked_inferior_pid = ws->value.related_pid; | |
7785 | return 1; | |
ce78b96d JB |
7786 | } |
7787 | ||
4a64f543 MS |
7788 | /* Implement the "print_it" breakpoint_ops method for fork |
7789 | catchpoints. */ | |
ce78b96d JB |
7790 | |
7791 | static enum print_stop_action | |
348d480f | 7792 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7793 | { |
36dfb11c | 7794 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7795 | struct breakpoint *b = bs->breakpoint_at; |
7796 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7797 | |
ce78b96d | 7798 | annotate_catchpoint (b->number); |
f303dbd6 | 7799 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7800 | if (b->disposition == disp_del) |
112e8700 | 7801 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7802 | else |
112e8700 SM |
7803 | uiout->text ("Catchpoint "); |
7804 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7805 | { |
112e8700 SM |
7806 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7807 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7808 | } |
381befee | 7809 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7810 | uiout->text (" (forked process "); |
381befee | 7811 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7812 | uiout->text ("), "); |
ce78b96d JB |
7813 | return PRINT_SRC_AND_LOC; |
7814 | } | |
7815 | ||
4a64f543 MS |
7816 | /* Implement the "print_one" breakpoint_ops method for fork |
7817 | catchpoints. */ | |
ce78b96d JB |
7818 | |
7819 | static void | |
a6d9a66e | 7820 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7821 | { |
e29a4733 | 7822 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7823 | struct value_print_options opts; |
79a45e25 | 7824 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7825 | |
7826 | get_user_print_options (&opts); | |
7827 | ||
4a64f543 MS |
7828 | /* Field 4, the address, is omitted (which makes the columns not |
7829 | line up too nicely with the headers, but the effect is relatively | |
7830 | readable). */ | |
79a45b7d | 7831 | if (opts.addressprint) |
112e8700 | 7832 | uiout->field_skip ("addr"); |
ce78b96d | 7833 | annotate_field (5); |
112e8700 | 7834 | uiout->text ("fork"); |
d7e15655 | 7835 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7836 | { |
112e8700 | 7837 | uiout->text (", process "); |
381befee | 7838 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7839 | uiout->spaces (1); |
ce78b96d | 7840 | } |
8ac3646f | 7841 | |
112e8700 SM |
7842 | if (uiout->is_mi_like_p ()) |
7843 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7844 | } |
7845 | ||
7846 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7847 | catchpoints. */ | |
7848 | ||
7849 | static void | |
7850 | print_mention_catch_fork (struct breakpoint *b) | |
7851 | { | |
7852 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7853 | } | |
7854 | ||
6149aea9 PA |
7855 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7856 | catchpoints. */ | |
7857 | ||
7858 | static void | |
7859 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7860 | { | |
7861 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7862 | print_recreate_thread (b, fp); |
6149aea9 PA |
7863 | } |
7864 | ||
ce78b96d JB |
7865 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7866 | ||
2060206e | 7867 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7868 | |
4a64f543 MS |
7869 | /* Implement the "insert" breakpoint_ops method for vfork |
7870 | catchpoints. */ | |
ce78b96d | 7871 | |
77b06cd7 TJB |
7872 | static int |
7873 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7874 | { |
e99b03dc | 7875 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7876 | } |
7877 | ||
4a64f543 MS |
7878 | /* Implement the "remove" breakpoint_ops method for vfork |
7879 | catchpoints. */ | |
ce78b96d JB |
7880 | |
7881 | static int | |
73971819 | 7882 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7883 | { |
e99b03dc | 7884 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7885 | } |
7886 | ||
7887 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7888 | catchpoints. */ | |
7889 | ||
7890 | static int | |
f1310107 | 7891 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7892 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7893 | const struct target_waitstatus *ws) |
ce78b96d | 7894 | { |
e29a4733 PA |
7895 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7896 | ||
f90263c1 TT |
7897 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7898 | return 0; | |
7899 | ||
7900 | c->forked_inferior_pid = ws->value.related_pid; | |
7901 | return 1; | |
ce78b96d JB |
7902 | } |
7903 | ||
4a64f543 MS |
7904 | /* Implement the "print_it" breakpoint_ops method for vfork |
7905 | catchpoints. */ | |
ce78b96d JB |
7906 | |
7907 | static enum print_stop_action | |
348d480f | 7908 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7909 | { |
36dfb11c | 7910 | struct ui_out *uiout = current_uiout; |
348d480f | 7911 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7912 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7913 | ||
ce78b96d | 7914 | annotate_catchpoint (b->number); |
f303dbd6 | 7915 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7916 | if (b->disposition == disp_del) |
112e8700 | 7917 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7918 | else |
112e8700 SM |
7919 | uiout->text ("Catchpoint "); |
7920 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7921 | { |
112e8700 SM |
7922 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7923 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7924 | } |
381befee | 7925 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7926 | uiout->text (" (vforked process "); |
381befee | 7927 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7928 | uiout->text ("), "); |
ce78b96d JB |
7929 | return PRINT_SRC_AND_LOC; |
7930 | } | |
7931 | ||
4a64f543 MS |
7932 | /* Implement the "print_one" breakpoint_ops method for vfork |
7933 | catchpoints. */ | |
ce78b96d JB |
7934 | |
7935 | static void | |
a6d9a66e | 7936 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7937 | { |
e29a4733 | 7938 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7939 | struct value_print_options opts; |
79a45e25 | 7940 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7941 | |
7942 | get_user_print_options (&opts); | |
4a64f543 MS |
7943 | /* Field 4, the address, is omitted (which makes the columns not |
7944 | line up too nicely with the headers, but the effect is relatively | |
7945 | readable). */ | |
79a45b7d | 7946 | if (opts.addressprint) |
112e8700 | 7947 | uiout->field_skip ("addr"); |
ce78b96d | 7948 | annotate_field (5); |
112e8700 | 7949 | uiout->text ("vfork"); |
d7e15655 | 7950 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7951 | { |
112e8700 | 7952 | uiout->text (", process "); |
381befee | 7953 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7954 | uiout->spaces (1); |
ce78b96d | 7955 | } |
8ac3646f | 7956 | |
112e8700 SM |
7957 | if (uiout->is_mi_like_p ()) |
7958 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7959 | } |
7960 | ||
7961 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7962 | catchpoints. */ | |
7963 | ||
7964 | static void | |
7965 | print_mention_catch_vfork (struct breakpoint *b) | |
7966 | { | |
7967 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7968 | } | |
7969 | ||
6149aea9 PA |
7970 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7971 | catchpoints. */ | |
7972 | ||
7973 | static void | |
7974 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7975 | { | |
7976 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7977 | print_recreate_thread (b, fp); |
6149aea9 PA |
7978 | } |
7979 | ||
ce78b96d JB |
7980 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7981 | ||
2060206e | 7982 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7983 | |
edcc5120 | 7984 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7985 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7986 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7987 | ||
c1fc2657 | 7988 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7989 | { |
c1fc2657 | 7990 | ~solib_catchpoint () override; |
edcc5120 TT |
7991 | |
7992 | /* True for "catch load", false for "catch unload". */ | |
b650a282 | 7993 | bool is_load; |
edcc5120 TT |
7994 | |
7995 | /* Regular expression to match, if any. COMPILED is only valid when | |
7996 | REGEX is non-NULL. */ | |
7997 | char *regex; | |
2d7cc5c7 | 7998 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7999 | }; |
8000 | ||
c1fc2657 | 8001 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 8002 | { |
c1fc2657 | 8003 | xfree (this->regex); |
edcc5120 TT |
8004 | } |
8005 | ||
8006 | static int | |
8007 | insert_catch_solib (struct bp_location *ignore) | |
8008 | { | |
8009 | return 0; | |
8010 | } | |
8011 | ||
8012 | static int | |
73971819 | 8013 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8014 | { |
8015 | return 0; | |
8016 | } | |
8017 | ||
8018 | static int | |
8019 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 8020 | const address_space *aspace, |
edcc5120 TT |
8021 | CORE_ADDR bp_addr, |
8022 | const struct target_waitstatus *ws) | |
8023 | { | |
8024 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
edcc5120 TT |
8025 | |
8026 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8027 | return 1; | |
8028 | ||
43892fdf | 8029 | for (breakpoint *other : all_breakpoints ()) |
01add95b SM |
8030 | { |
8031 | if (other == bl->owner) | |
8032 | continue; | |
edcc5120 | 8033 | |
01add95b SM |
8034 | if (other->type != bp_shlib_event) |
8035 | continue; | |
edcc5120 | 8036 | |
01add95b SM |
8037 | if (self->pspace != NULL && other->pspace != self->pspace) |
8038 | continue; | |
edcc5120 | 8039 | |
01add95b SM |
8040 | for (bp_location *other_bl : other->locations ()) |
8041 | { | |
8042 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8043 | return 1; | |
8044 | } | |
8045 | } | |
edcc5120 TT |
8046 | |
8047 | return 0; | |
8048 | } | |
8049 | ||
8050 | static void | |
8051 | check_status_catch_solib (struct bpstats *bs) | |
8052 | { | |
8053 | struct solib_catchpoint *self | |
8054 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8055 | |
8056 | if (self->is_load) | |
8057 | { | |
52941706 | 8058 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
8059 | { |
8060 | if (!self->regex | |
2d7cc5c7 | 8061 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8062 | return; |
8063 | } | |
8064 | } | |
8065 | else | |
8066 | { | |
6fb16ce6 | 8067 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8068 | { |
8069 | if (!self->regex | |
6fb16ce6 | 8070 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8071 | return; |
8072 | } | |
8073 | } | |
8074 | ||
8075 | bs->stop = 0; | |
8076 | bs->print_it = print_it_noop; | |
8077 | } | |
8078 | ||
8079 | static enum print_stop_action | |
8080 | print_it_catch_solib (bpstat bs) | |
8081 | { | |
8082 | struct breakpoint *b = bs->breakpoint_at; | |
8083 | struct ui_out *uiout = current_uiout; | |
8084 | ||
8085 | annotate_catchpoint (b->number); | |
f303dbd6 | 8086 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8087 | if (b->disposition == disp_del) |
112e8700 | 8088 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8089 | else |
112e8700 | 8090 | uiout->text ("Catchpoint "); |
381befee | 8091 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8092 | uiout->text ("\n"); |
8093 | if (uiout->is_mi_like_p ()) | |
8094 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8095 | print_solib_event (1); |
8096 | return PRINT_SRC_AND_LOC; | |
8097 | } | |
8098 | ||
8099 | static void | |
8100 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8101 | { | |
8102 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8103 | struct value_print_options opts; | |
8104 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8105 | |
8106 | get_user_print_options (&opts); | |
8107 | /* Field 4, the address, is omitted (which makes the columns not | |
8108 | line up too nicely with the headers, but the effect is relatively | |
8109 | readable). */ | |
8110 | if (opts.addressprint) | |
8111 | { | |
8112 | annotate_field (4); | |
112e8700 | 8113 | uiout->field_skip ("addr"); |
edcc5120 TT |
8114 | } |
8115 | ||
528e1572 | 8116 | std::string msg; |
edcc5120 TT |
8117 | annotate_field (5); |
8118 | if (self->is_load) | |
8119 | { | |
8120 | if (self->regex) | |
528e1572 | 8121 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8122 | else |
528e1572 | 8123 | msg = _("load of library"); |
edcc5120 TT |
8124 | } |
8125 | else | |
8126 | { | |
8127 | if (self->regex) | |
528e1572 | 8128 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8129 | else |
528e1572 | 8130 | msg = _("unload of library"); |
edcc5120 | 8131 | } |
112e8700 | 8132 | uiout->field_string ("what", msg); |
8ac3646f | 8133 | |
112e8700 SM |
8134 | if (uiout->is_mi_like_p ()) |
8135 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8136 | } |
8137 | ||
8138 | static void | |
8139 | print_mention_catch_solib (struct breakpoint *b) | |
8140 | { | |
8141 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8142 | ||
8143 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8144 | self->is_load ? "load" : "unload"); | |
8145 | } | |
8146 | ||
8147 | static void | |
8148 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8149 | { | |
8150 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8151 | ||
8152 | fprintf_unfiltered (fp, "%s %s", | |
8153 | b->disposition == disp_del ? "tcatch" : "catch", | |
8154 | self->is_load ? "load" : "unload"); | |
8155 | if (self->regex) | |
8156 | fprintf_unfiltered (fp, " %s", self->regex); | |
8157 | fprintf_unfiltered (fp, "\n"); | |
8158 | } | |
8159 | ||
8160 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8161 | ||
b650a282 | 8162 | /* See breakpoint.h. */ |
edcc5120 | 8163 | |
91985142 | 8164 | void |
b650a282 | 8165 | add_solib_catchpoint (const char *arg, bool is_load, bool is_temp, bool enabled) |
edcc5120 | 8166 | { |
edcc5120 | 8167 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8168 | |
edcc5120 TT |
8169 | if (!arg) |
8170 | arg = ""; | |
f1735a53 | 8171 | arg = skip_spaces (arg); |
edcc5120 | 8172 | |
36bd8eaa | 8173 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8174 | |
8175 | if (*arg != '\0') | |
8176 | { | |
2d7cc5c7 PA |
8177 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8178 | _("Invalid regexp"))); | |
edcc5120 TT |
8179 | c->regex = xstrdup (arg); |
8180 | } | |
8181 | ||
8182 | c->is_load = is_load; | |
36bd8eaa | 8183 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8184 | &catch_solib_breakpoint_ops); |
8185 | ||
c1fc2657 | 8186 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8187 | |
b270e6f9 | 8188 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8189 | } |
8190 | ||
91985142 MG |
8191 | /* A helper function that does all the work for "catch load" and |
8192 | "catch unload". */ | |
8193 | ||
8194 | static void | |
eb4c3f4a | 8195 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8196 | struct cmd_list_element *command) |
8197 | { | |
91985142 | 8198 | const int enabled = 1; |
b650a282 | 8199 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
91985142 | 8200 | |
b650a282 | 8201 | add_solib_catchpoint (arg, is_load, temp, enabled); |
91985142 MG |
8202 | } |
8203 | ||
edcc5120 | 8204 | static void |
eb4c3f4a | 8205 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8206 | struct cmd_list_element *command) |
8207 | { | |
8208 | catch_load_or_unload (arg, from_tty, 1, command); | |
8209 | } | |
8210 | ||
8211 | static void | |
eb4c3f4a | 8212 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8213 | struct cmd_list_element *command) |
8214 | { | |
8215 | catch_load_or_unload (arg, from_tty, 0, command); | |
8216 | } | |
8217 | ||
b650a282 | 8218 | /* See breakpoint.h. */ |
ce78b96d | 8219 | |
ab04a2af | 8220 | void |
346774a9 | 8221 | init_catchpoint (struct breakpoint *b, |
b650a282 | 8222 | struct gdbarch *gdbarch, bool temp, |
63160a43 | 8223 | const char *cond_string, |
c0a91b2b | 8224 | const struct breakpoint_ops *ops) |
c906108c | 8225 | { |
51abb421 | 8226 | symtab_and_line sal; |
6c95b8df | 8227 | sal.pspace = current_program_space; |
c5aa993b | 8228 | |
28010a5d | 8229 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8230 | |
1b36a34b | 8231 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b650a282 | 8232 | b->disposition = temp ? disp_del : disp_donttouch; |
346774a9 PA |
8233 | } |
8234 | ||
28010a5d | 8235 | void |
b270e6f9 | 8236 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8237 | { |
b270e6f9 | 8238 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8239 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8240 | if (is_tracepoint (b)) |
8241 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8242 | if (!internal) |
8243 | mention (b); | |
76727919 | 8244 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8245 | |
8246 | if (update_gll) | |
44702360 | 8247 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8248 | } |
8249 | ||
9b70b993 | 8250 | static void |
a6d9a66e | 8251 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
b650a282 | 8252 | bool temp, const char *cond_string, |
dda83cd7 | 8253 | const struct breakpoint_ops *ops) |
c906108c | 8254 | { |
b270e6f9 | 8255 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8256 | |
b650a282 | 8257 | init_catchpoint (c.get (), gdbarch, temp, cond_string, ops); |
e29a4733 PA |
8258 | |
8259 | c->forked_inferior_pid = null_ptid; | |
8260 | ||
b270e6f9 | 8261 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8262 | } |
8263 | ||
fe798b75 JB |
8264 | /* Exec catchpoints. */ |
8265 | ||
b4d90040 | 8266 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8267 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8268 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8269 | ||
c1fc2657 | 8270 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8271 | { |
c1fc2657 | 8272 | ~exec_catchpoint () override; |
b4d90040 PA |
8273 | |
8274 | /* Filename of a program whose exec triggered this catchpoint. | |
8275 | This field is only valid immediately after this catchpoint has | |
8276 | triggered. */ | |
8277 | char *exec_pathname; | |
8278 | }; | |
8279 | ||
c1fc2657 | 8280 | /* Exec catchpoint destructor. */ |
b4d90040 | 8281 | |
c1fc2657 | 8282 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8283 | { |
c1fc2657 | 8284 | xfree (this->exec_pathname); |
b4d90040 PA |
8285 | } |
8286 | ||
77b06cd7 TJB |
8287 | static int |
8288 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8289 | { |
e99b03dc | 8290 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8291 | } |
c906108c | 8292 | |
fe798b75 | 8293 | static int |
73971819 | 8294 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8295 | { |
e99b03dc | 8296 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8297 | } |
c906108c | 8298 | |
fe798b75 | 8299 | static int |
f1310107 | 8300 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8301 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8302 | const struct target_waitstatus *ws) |
fe798b75 | 8303 | { |
b4d90040 PA |
8304 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8305 | ||
f90263c1 TT |
8306 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8307 | return 0; | |
8308 | ||
8309 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8310 | return 1; | |
fe798b75 | 8311 | } |
c906108c | 8312 | |
fe798b75 | 8313 | static enum print_stop_action |
348d480f | 8314 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8315 | { |
36dfb11c | 8316 | struct ui_out *uiout = current_uiout; |
348d480f | 8317 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8318 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8319 | ||
fe798b75 | 8320 | annotate_catchpoint (b->number); |
f303dbd6 | 8321 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8322 | if (b->disposition == disp_del) |
112e8700 | 8323 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8324 | else |
112e8700 SM |
8325 | uiout->text ("Catchpoint "); |
8326 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8327 | { |
112e8700 SM |
8328 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8329 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8330 | } |
381befee | 8331 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8332 | uiout->text (" (exec'd "); |
8333 | uiout->field_string ("new-exec", c->exec_pathname); | |
8334 | uiout->text ("), "); | |
36dfb11c | 8335 | |
fe798b75 | 8336 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8337 | } |
8338 | ||
fe798b75 | 8339 | static void |
a6d9a66e | 8340 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8341 | { |
b4d90040 | 8342 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8343 | struct value_print_options opts; |
79a45e25 | 8344 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8345 | |
8346 | get_user_print_options (&opts); | |
8347 | ||
8348 | /* Field 4, the address, is omitted (which makes the columns | |
8349 | not line up too nicely with the headers, but the effect | |
8350 | is relatively readable). */ | |
8351 | if (opts.addressprint) | |
112e8700 | 8352 | uiout->field_skip ("addr"); |
fe798b75 | 8353 | annotate_field (5); |
112e8700 | 8354 | uiout->text ("exec"); |
b4d90040 | 8355 | if (c->exec_pathname != NULL) |
fe798b75 | 8356 | { |
112e8700 SM |
8357 | uiout->text (", program \""); |
8358 | uiout->field_string ("what", c->exec_pathname); | |
8359 | uiout->text ("\" "); | |
fe798b75 | 8360 | } |
8ac3646f | 8361 | |
112e8700 SM |
8362 | if (uiout->is_mi_like_p ()) |
8363 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8364 | } |
8365 | ||
8366 | static void | |
8367 | print_mention_catch_exec (struct breakpoint *b) | |
8368 | { | |
8369 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8370 | } | |
8371 | ||
6149aea9 PA |
8372 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8373 | catchpoints. */ | |
8374 | ||
8375 | static void | |
8376 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8377 | { | |
8378 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8379 | print_recreate_thread (b, fp); |
6149aea9 PA |
8380 | } |
8381 | ||
2060206e | 8382 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8383 | |
c906108c | 8384 | static int |
fba45db2 | 8385 | hw_breakpoint_used_count (void) |
c906108c | 8386 | { |
c906108c SS |
8387 | int i = 0; |
8388 | ||
43892fdf | 8389 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 8390 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 8391 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
8392 | { |
8393 | /* Special types of hardware breakpoints may use more than | |
8394 | one register. */ | |
348d480f | 8395 | i += b->ops->resources_needed (bl); |
f1310107 | 8396 | } |
c906108c SS |
8397 | |
8398 | return i; | |
8399 | } | |
8400 | ||
a1398e0c PA |
8401 | /* Returns the resources B would use if it were a hardware |
8402 | watchpoint. */ | |
8403 | ||
c906108c | 8404 | static int |
a1398e0c | 8405 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8406 | { |
c906108c SS |
8407 | int i = 0; |
8408 | ||
a1398e0c PA |
8409 | if (!breakpoint_enabled (b)) |
8410 | return 0; | |
8411 | ||
40cb8ca5 | 8412 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
8413 | { |
8414 | /* Special types of hardware watchpoints may use more than | |
8415 | one register. */ | |
8416 | i += b->ops->resources_needed (bl); | |
8417 | } | |
8418 | ||
8419 | return i; | |
8420 | } | |
8421 | ||
8422 | /* Returns the sum the used resources of all hardware watchpoints of | |
8423 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8424 | the sum of the used resources of all hardware watchpoints of other | |
8425 | types _not_ TYPE. */ | |
8426 | ||
8427 | static int | |
8428 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8429 | enum bptype type, int *other_type_used) | |
8430 | { | |
8431 | int i = 0; | |
a1398e0c | 8432 | |
c906108c | 8433 | *other_type_used = 0; |
43892fdf | 8434 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 8435 | { |
a1398e0c PA |
8436 | if (b == except) |
8437 | continue; | |
e09342b5 TJB |
8438 | if (!breakpoint_enabled (b)) |
8439 | continue; | |
8440 | ||
a1398e0c PA |
8441 | if (b->type == type) |
8442 | i += hw_watchpoint_use_count (b); | |
8443 | else if (is_hardware_watchpoint (b)) | |
8444 | *other_type_used = 1; | |
e09342b5 TJB |
8445 | } |
8446 | ||
c906108c SS |
8447 | return i; |
8448 | } | |
8449 | ||
c906108c | 8450 | void |
fba45db2 | 8451 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8452 | { |
43892fdf | 8453 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8454 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8455 | { |
b5de0fa7 | 8456 | b->enable_state = bp_call_disabled; |
44702360 | 8457 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 8458 | } |
c906108c SS |
8459 | } |
8460 | ||
8461 | void | |
fba45db2 | 8462 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8463 | { |
43892fdf | 8464 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8465 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8466 | { |
b5de0fa7 | 8467 | b->enable_state = bp_enabled; |
44702360 | 8468 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 8469 | } |
c906108c SS |
8470 | } |
8471 | ||
8bea4e01 UW |
8472 | void |
8473 | disable_breakpoints_before_startup (void) | |
8474 | { | |
6c95b8df | 8475 | current_program_space->executing_startup = 1; |
44702360 | 8476 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8477 | } |
8478 | ||
8479 | void | |
8480 | enable_breakpoints_after_startup (void) | |
8481 | { | |
6c95b8df | 8482 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8483 | breakpoint_re_set (); |
8bea4e01 UW |
8484 | } |
8485 | ||
7c16b83e PA |
8486 | /* Create a new single-step breakpoint for thread THREAD, with no |
8487 | locations. */ | |
c906108c | 8488 | |
7c16b83e PA |
8489 | static struct breakpoint * |
8490 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8491 | { | |
b270e6f9 | 8492 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8493 | |
b270e6f9 | 8494 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8495 | &momentary_breakpoint_ops); |
8496 | ||
8497 | b->disposition = disp_donttouch; | |
8498 | b->frame_id = null_frame_id; | |
8499 | ||
8500 | b->thread = thread; | |
8501 | gdb_assert (b->thread != 0); | |
8502 | ||
b270e6f9 | 8503 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8504 | } |
8505 | ||
8506 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8507 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8508 | frame. */ | |
c906108c | 8509 | |
454dafbd | 8510 | breakpoint_up |
a6d9a66e UW |
8511 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8512 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8513 | { |
52f0bd74 | 8514 | struct breakpoint *b; |
edb3359d | 8515 | |
193facb3 JK |
8516 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8517 | tail-called one. */ | |
8518 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8519 | |
06edf0c0 | 8520 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8521 | b->enable_state = bp_enabled; |
8522 | b->disposition = disp_donttouch; | |
818dd999 | 8523 | b->frame_id = frame_id; |
c906108c | 8524 | |
00431a78 | 8525 | b->thread = inferior_thread ()->global_num; |
c906108c | 8526 | |
44702360 | 8527 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8528 | |
454dafbd | 8529 | return breakpoint_up (b); |
c906108c | 8530 | } |
611c83ae | 8531 | |
06edf0c0 | 8532 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8533 | The new breakpoint will have type TYPE, use OPS as its |
8534 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8535 | |
06edf0c0 PA |
8536 | static struct breakpoint * |
8537 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8538 | enum bptype type, | |
a1aa2221 LM |
8539 | const struct breakpoint_ops *ops, |
8540 | int loc_enabled) | |
e58b0e63 PA |
8541 | { |
8542 | struct breakpoint *copy; | |
8543 | ||
06edf0c0 | 8544 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8545 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8546 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8547 | |
a6d9a66e | 8548 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8549 | copy->loc->requested_address = orig->loc->requested_address; |
8550 | copy->loc->address = orig->loc->address; | |
8551 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8552 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8553 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8554 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8555 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8556 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8557 | copy->frame_id = orig->frame_id; |
8558 | copy->thread = orig->thread; | |
6c95b8df | 8559 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8560 | |
8561 | copy->enable_state = bp_enabled; | |
8562 | copy->disposition = disp_donttouch; | |
8563 | copy->number = internal_breakpoint_number--; | |
8564 | ||
44702360 | 8565 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8566 | return copy; |
8567 | } | |
8568 | ||
06edf0c0 PA |
8569 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8570 | ORIG is NULL. */ | |
8571 | ||
8572 | struct breakpoint * | |
8573 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8574 | { | |
8575 | /* If there's nothing to clone, then return nothing. */ | |
8576 | if (orig == NULL) | |
8577 | return NULL; | |
8578 | ||
a1aa2221 | 8579 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8580 | } |
8581 | ||
454dafbd | 8582 | breakpoint_up |
a6d9a66e UW |
8583 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8584 | enum bptype type) | |
611c83ae PA |
8585 | { |
8586 | struct symtab_and_line sal; | |
8587 | ||
8588 | sal = find_pc_line (pc, 0); | |
8589 | sal.pc = pc; | |
8590 | sal.section = find_pc_overlay (pc); | |
8591 | sal.explicit_pc = 1; | |
8592 | ||
a6d9a66e | 8593 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8594 | } |
c906108c | 8595 | \f |
c5aa993b | 8596 | |
c906108c SS |
8597 | /* Tell the user we have just set a breakpoint B. */ |
8598 | ||
8599 | static void | |
fba45db2 | 8600 | mention (struct breakpoint *b) |
c906108c | 8601 | { |
348d480f | 8602 | b->ops->print_mention (b); |
2d33446d | 8603 | current_uiout->text ("\n"); |
c906108c | 8604 | } |
c906108c | 8605 | \f |
c5aa993b | 8606 | |
5133a315 | 8607 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8608 | |
7f32a4d5 PA |
8609 | /* Handle "set breakpoint auto-hw on". |
8610 | ||
8611 | If the explicitly specified breakpoint type is not hardware | |
8612 | breakpoint, check the memory map to see whether the breakpoint | |
8613 | address is in read-only memory. | |
8614 | ||
8615 | - location type is not hardware breakpoint, memory is read-only. | |
8616 | We change the type of the location to hardware breakpoint. | |
8617 | ||
8618 | - location type is hardware breakpoint, memory is read-write. This | |
8619 | means we've previously made the location hardware one, but then the | |
8620 | memory map changed, so we undo. | |
8621 | */ | |
8622 | ||
8623 | static void | |
8624 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8625 | { | |
8626 | if (automatic_hardware_breakpoints | |
8627 | && bl->owner->type != bp_hardware_breakpoint | |
8628 | && (bl->loc_type == bp_loc_software_breakpoint | |
8629 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8630 | { | |
8631 | /* When breakpoints are removed, remove_breakpoints will use | |
8632 | location types we've just set here, the only possible problem | |
8633 | is that memory map has changed during running program, but | |
8634 | it's not going to work anyway with current gdb. */ | |
8635 | mem_region *mr = lookup_mem_region (bl->address); | |
8636 | ||
8637 | if (mr != nullptr) | |
8638 | { | |
8639 | enum bp_loc_type new_type; | |
8640 | ||
8641 | if (mr->attrib.mode != MEM_RW) | |
8642 | new_type = bp_loc_hardware_breakpoint; | |
8643 | else | |
8644 | new_type = bp_loc_software_breakpoint; | |
8645 | ||
8646 | if (new_type != bl->loc_type) | |
8647 | { | |
8648 | static bool said = false; | |
8649 | ||
8650 | bl->loc_type = new_type; | |
8651 | if (!said) | |
8652 | { | |
8653 | fprintf_filtered (gdb_stdout, | |
8654 | _("Note: automatically using " | |
8655 | "hardware breakpoints for " | |
8656 | "read-only addresses.\n")); | |
8657 | said = true; | |
8658 | } | |
8659 | } | |
8660 | } | |
8661 | } | |
8662 | } | |
8663 | ||
0d381245 | 8664 | static struct bp_location * |
39d61571 | 8665 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8666 | const struct symtab_and_line *sal) |
8667 | { | |
8668 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8669 | CORE_ADDR adjusted_address; |
8670 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8671 | ||
8672 | if (loc_gdbarch == NULL) | |
8673 | loc_gdbarch = b->gdbarch; | |
8674 | ||
8675 | /* Adjust the breakpoint's address prior to allocating a location. | |
8676 | Once we call allocate_bp_location(), that mostly uninitialized | |
8677 | location will be placed on the location chain. Adjustment of the | |
8678 | breakpoint may cause target_read_memory() to be called and we do | |
8679 | not want its scan of the location chain to find a breakpoint and | |
8680 | location that's only been partially initialized. */ | |
8681 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8682 | sal->pc, b->type); | |
0d381245 | 8683 | |
d30113d4 | 8684 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8685 | loc = allocate_bp_location (b); |
d30113d4 JK |
8686 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8687 | tmp = &((*tmp)->next)) | |
0d381245 | 8688 | ; |
d30113d4 | 8689 | loc->next = *tmp; |
0d381245 | 8690 | *tmp = loc; |
3742cc8b | 8691 | |
0d381245 | 8692 | loc->requested_address = sal->pc; |
3742cc8b | 8693 | loc->address = adjusted_address; |
6c95b8df | 8694 | loc->pspace = sal->pspace; |
935676c9 | 8695 | loc->probe.prob = sal->prob; |
729662a5 | 8696 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8697 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8698 | loc->section = sal->section; |
3742cc8b | 8699 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8700 | loc->line_number = sal->line; |
2f202fde | 8701 | loc->symtab = sal->symtab; |
4a27f119 | 8702 | loc->symbol = sal->symbol; |
3467ec66 PA |
8703 | loc->msymbol = sal->msymbol; |
8704 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8705 | |
0ba852ab | 8706 | set_breakpoint_location_function (loc); |
1a853c52 | 8707 | |
6ae88661 LM |
8708 | /* While by definition, permanent breakpoints are already present in the |
8709 | code, we don't mark the location as inserted. Normally one would expect | |
8710 | that GDB could rely on that breakpoint instruction to stop the program, | |
8711 | thus removing the need to insert its own breakpoint, except that executing | |
8712 | the breakpoint instruction can kill the target instead of reporting a | |
8713 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8714 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8715 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8716 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8717 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8718 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8719 | it manually increments the PC, thus avoiding executing the breakpoint | |
8720 | instruction.) */ | |
1a853c52 | 8721 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8722 | loc->permanent = 1; |
1a853c52 | 8723 | |
0d381245 VP |
8724 | return loc; |
8725 | } | |
514f746b AR |
8726 | \f |
8727 | ||
5133a315 LM |
8728 | /* Return true if LOC is pointing to a permanent breakpoint, |
8729 | return false otherwise. */ | |
1cf4d951 | 8730 | |
5133a315 | 8731 | static bool |
1cf4d951 PA |
8732 | bp_loc_is_permanent (struct bp_location *loc) |
8733 | { | |
514f746b AR |
8734 | gdb_assert (loc != NULL); |
8735 | ||
cb1e4e32 PA |
8736 | /* If we have a non-breakpoint-backed catchpoint or a software |
8737 | watchpoint, just return 0. We should not attempt to read from | |
8738 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8739 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8740 | memory. */ |
cb1e4e32 | 8741 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8742 | return false; |
244558af | 8743 | |
5ed8105e | 8744 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8745 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8746 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8747 | } |
8748 | ||
e7e0cddf SS |
8749 | /* Build a command list for the dprintf corresponding to the current |
8750 | settings of the dprintf style options. */ | |
8751 | ||
8752 | static void | |
8753 | update_dprintf_command_list (struct breakpoint *b) | |
8754 | { | |
8755 | char *dprintf_args = b->extra_string; | |
8756 | char *printf_line = NULL; | |
8757 | ||
8758 | if (!dprintf_args) | |
8759 | return; | |
8760 | ||
8761 | dprintf_args = skip_spaces (dprintf_args); | |
8762 | ||
8763 | /* Allow a comma, as it may have terminated a location, but don't | |
8764 | insist on it. */ | |
8765 | if (*dprintf_args == ',') | |
8766 | ++dprintf_args; | |
8767 | dprintf_args = skip_spaces (dprintf_args); | |
8768 | ||
8769 | if (*dprintf_args != '"') | |
8770 | error (_("Bad format string, missing '\"'.")); | |
8771 | ||
d3ce09f5 | 8772 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8773 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8774 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8775 | { |
8776 | if (!dprintf_function) | |
8777 | error (_("No function supplied for dprintf call")); | |
8778 | ||
8779 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8780 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8781 | dprintf_function, | |
8782 | dprintf_channel, | |
8783 | dprintf_args); | |
8784 | else | |
8785 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8786 | dprintf_function, | |
8787 | dprintf_args); | |
8788 | } | |
d3ce09f5 SS |
8789 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8790 | { | |
8791 | if (target_can_run_breakpoint_commands ()) | |
8792 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8793 | else | |
8794 | { | |
8795 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8796 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8797 | } | |
8798 | } | |
e7e0cddf SS |
8799 | else |
8800 | internal_error (__FILE__, __LINE__, | |
8801 | _("Invalid dprintf style.")); | |
8802 | ||
f28045c2 | 8803 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8804 | |
12973681 TT |
8805 | /* Manufacture a printf sequence. */ |
8806 | struct command_line *printf_cmd_line | |
8807 | = new struct command_line (simple_control, printf_line); | |
8808 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8809 | command_lines_deleter ())); | |
e7e0cddf SS |
8810 | } |
8811 | ||
8812 | /* Update all dprintf commands, making their command lists reflect | |
8813 | current style settings. */ | |
8814 | ||
8815 | static void | |
eb4c3f4a | 8816 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8817 | struct cmd_list_element *c) |
8818 | { | |
43892fdf SM |
8819 | for (breakpoint *b : all_breakpoints ()) |
8820 | if (b->type == bp_dprintf) | |
e7e0cddf | 8821 | update_dprintf_command_list (b); |
e7e0cddf | 8822 | } |
c3f6f71d | 8823 | |
f00aae0f KS |
8824 | /* Create a breakpoint with SAL as location. Use LOCATION |
8825 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8826 | as condition expression. If LOCATION is NULL then create an |
8827 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8828 | |
8829 | static void | |
d9b3f62e | 8830 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8831 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8832 | event_location_up &&location, |
e1e01040 PA |
8833 | gdb::unique_xmalloc_ptr<char> filter, |
8834 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8835 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8836 | enum bptype type, enum bpdisp disposition, |
8837 | int thread, int task, int ignore_count, | |
c0a91b2b | 8838 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8839 | int enabled, int internal, unsigned flags, |
8840 | int display_canonical) | |
018d34a4 | 8841 | { |
0d381245 | 8842 | int i; |
018d34a4 VP |
8843 | |
8844 | if (type == bp_hardware_breakpoint) | |
8845 | { | |
fbbd034e AS |
8846 | int target_resources_ok; |
8847 | ||
8848 | i = hw_breakpoint_used_count (); | |
8849 | target_resources_ok = | |
8850 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8851 | i + 1, 0); |
8852 | if (target_resources_ok == 0) | |
8853 | error (_("No hardware breakpoint support in the target.")); | |
8854 | else if (target_resources_ok < 0) | |
8855 | error (_("Hardware breakpoints used exceeds limit.")); | |
8856 | } | |
8857 | ||
6c5b2ebe | 8858 | gdb_assert (!sals.empty ()); |
6c95b8df | 8859 | |
6c5b2ebe | 8860 | for (const auto &sal : sals) |
0d381245 | 8861 | { |
0d381245 VP |
8862 | struct bp_location *loc; |
8863 | ||
8864 | if (from_tty) | |
5af949e3 UW |
8865 | { |
8866 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8867 | if (!loc_gdbarch) | |
8868 | loc_gdbarch = gdbarch; | |
8869 | ||
8870 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8871 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8872 | } |
0d381245 | 8873 | |
6c5b2ebe | 8874 | if (&sal == &sals[0]) |
0d381245 | 8875 | { |
d9b3f62e | 8876 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8877 | b->thread = thread; |
4a306c9a | 8878 | b->task = task; |
855a6e68 | 8879 | |
e1e01040 PA |
8880 | b->cond_string = cond_string.release (); |
8881 | b->extra_string = extra_string.release (); | |
0d381245 | 8882 | b->ignore_count = ignore_count; |
41447f92 | 8883 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8884 | b->disposition = disposition; |
6c95b8df | 8885 | |
44f238bb PA |
8886 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8887 | b->loc->inserted = 1; | |
8888 | ||
0fb4aa4b PA |
8889 | if (type == bp_static_tracepoint) |
8890 | { | |
d9b3f62e | 8891 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8892 | struct static_tracepoint_marker marker; |
8893 | ||
983af33b | 8894 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8895 | { |
8896 | /* We already know the marker exists, otherwise, we | |
8897 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8898 | const char *p |
8899 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8900 | const char *endp; |
0fb4aa4b | 8901 | |
f1735a53 | 8902 | p = skip_spaces (p); |
0fb4aa4b | 8903 | |
f1735a53 | 8904 | endp = skip_to_space (p); |
0fb4aa4b | 8905 | |
5d9310c4 | 8906 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8907 | |
3e43a32a MS |
8908 | printf_filtered (_("Probed static tracepoint " |
8909 | "marker \"%s\"\n"), | |
5d9310c4 | 8910 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8911 | } |
8912 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8913 | { | |
5d9310c4 | 8914 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8915 | |
3e43a32a MS |
8916 | printf_filtered (_("Probed static tracepoint " |
8917 | "marker \"%s\"\n"), | |
5d9310c4 | 8918 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8919 | } |
8920 | else | |
3e43a32a MS |
8921 | warning (_("Couldn't determine the static " |
8922 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8923 | } |
8924 | ||
0d381245 VP |
8925 | loc = b->loc; |
8926 | } | |
8927 | else | |
018d34a4 | 8928 | { |
39d61571 | 8929 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8930 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8931 | loc->inserted = 1; | |
0d381245 VP |
8932 | } |
8933 | ||
b5fa468f TBA |
8934 | /* Do not set breakpoint locations conditions yet. As locations |
8935 | are inserted, they get sorted based on their addresses. Let | |
8936 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8937 | |
8938 | /* Dynamic printf requires and uses additional arguments on the | |
8939 | command line, otherwise it's an error. */ | |
8940 | if (type == bp_dprintf) | |
8941 | { | |
8942 | if (b->extra_string) | |
8943 | update_dprintf_command_list (b); | |
8944 | else | |
8945 | error (_("Format string required")); | |
8946 | } | |
8947 | else if (b->extra_string) | |
588ae58c | 8948 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8949 | } |
018d34a4 | 8950 | |
b5fa468f TBA |
8951 | |
8952 | /* The order of the locations is now stable. Set the location | |
8953 | condition using the location's number. */ | |
8954 | int loc_num = 1; | |
40cb8ca5 | 8955 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
8956 | { |
8957 | if (b->cond_string != nullptr) | |
8958 | set_breakpoint_location_condition (b->cond_string, loc, b->number, | |
8959 | loc_num); | |
8960 | ||
8961 | ++loc_num; | |
8962 | } | |
8963 | ||
56435ebe | 8964 | b->display_canonical = display_canonical; |
f00aae0f | 8965 | if (location != NULL) |
d28cd78a | 8966 | b->location = std::move (location); |
018d34a4 | 8967 | else |
d28cd78a | 8968 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8969 | b->filter = std::move (filter); |
d9b3f62e | 8970 | } |
018d34a4 | 8971 | |
d9b3f62e PA |
8972 | static void |
8973 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8974 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8975 | event_location_up &&location, |
e1e01040 PA |
8976 | gdb::unique_xmalloc_ptr<char> filter, |
8977 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8978 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8979 | enum bptype type, enum bpdisp disposition, |
8980 | int thread, int task, int ignore_count, | |
c0a91b2b | 8981 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8982 | int enabled, int internal, unsigned flags, |
8983 | int display_canonical) | |
d9b3f62e | 8984 | { |
a5e364af | 8985 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8986 | |
a5e364af | 8987 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8988 | sals, std::move (location), |
e1e01040 PA |
8989 | std::move (filter), |
8990 | std::move (cond_string), | |
8991 | std::move (extra_string), | |
d9b3f62e PA |
8992 | type, disposition, |
8993 | thread, task, ignore_count, | |
8994 | ops, from_tty, | |
44f238bb PA |
8995 | enabled, internal, flags, |
8996 | display_canonical); | |
d9b3f62e | 8997 | |
b270e6f9 | 8998 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8999 | } |
9000 | ||
9001 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9002 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9003 | value. COND_STRING, if not NULL, specified the condition to be | |
9004 | used for all breakpoints. Essentially the only case where | |
9005 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9006 | function. In that case, it's still not possible to specify | |
9007 | separate conditions for different overloaded functions, so | |
9008 | we take just a single condition string. | |
9009 | ||
c3f6f71d | 9010 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9011 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9012 | array contents). If the function fails (error() is called), the |
9013 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9014 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9015 | |
9016 | static void | |
8cdf0e15 | 9017 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9018 | struct linespec_result *canonical, |
e1e01040 PA |
9019 | gdb::unique_xmalloc_ptr<char> cond_string, |
9020 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9021 | enum bptype type, enum bpdisp disposition, |
9022 | int thread, int task, int ignore_count, | |
c0a91b2b | 9023 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9024 | int enabled, int internal, unsigned flags) |
c906108c | 9025 | { |
f8eba3c6 | 9026 | if (canonical->pre_expanded) |
6c5b2ebe | 9027 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9028 | |
6c5b2ebe | 9029 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9030 | { |
f00aae0f | 9031 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9032 | 'break', without arguments. */ |
ffc2605c | 9033 | event_location_up location |
f00aae0f | 9034 | = (canonical->location != NULL |
8e9e35b1 | 9035 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9036 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9037 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9038 | |
6c5b2ebe | 9039 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9040 | std::move (location), |
e1e01040 PA |
9041 | std::move (filter_string), |
9042 | std::move (cond_string), | |
9043 | std::move (extra_string), | |
e7e0cddf | 9044 | type, disposition, |
84f4c1fe | 9045 | thread, task, ignore_count, ops, |
44f238bb | 9046 | from_tty, enabled, internal, flags, |
56435ebe | 9047 | canonical->special_display); |
c3f6f71d | 9048 | } |
c3f6f71d | 9049 | } |
c906108c | 9050 | |
f00aae0f | 9051 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9052 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9053 | addresses found. LOCATION points to the end of the SAL (for |
9054 | linespec locations). | |
9998af43 TJB |
9055 | |
9056 | The array and the line spec strings are allocated on the heap, it is | |
9057 | the caller's responsibility to free them. */ | |
c906108c | 9058 | |
b9362cc7 | 9059 | static void |
626d2320 | 9060 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 9061 | struct linespec_result *canonical) |
c3f6f71d | 9062 | { |
f00aae0f KS |
9063 | struct symtab_and_line cursal; |
9064 | ||
9065 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9066 | { | |
a20714ff | 9067 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9068 | |
a20714ff | 9069 | if (spec == NULL) |
f00aae0f KS |
9070 | { |
9071 | /* The last displayed codepoint, if it's valid, is our default | |
9072 | breakpoint address. */ | |
9073 | if (last_displayed_sal_is_valid ()) | |
9074 | { | |
f00aae0f KS |
9075 | /* Set sal's pspace, pc, symtab, and line to the values |
9076 | corresponding to the last call to print_frame_info. | |
9077 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9078 | as the breakpoint line number is inappropriate otherwise. | |
9079 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9080 | symtab_and_line sal = get_last_displayed_sal (); |
9081 | CORE_ADDR pc = sal.pc; | |
9082 | ||
f00aae0f KS |
9083 | sal = find_pc_line (pc, 0); |
9084 | ||
9085 | /* "break" without arguments is equivalent to "break *PC" | |
9086 | where PC is the last displayed codepoint's address. So | |
9087 | make sure to set sal.explicit_pc to prevent GDB from | |
9088 | trying to expand the list of sals to include all other | |
9089 | instances with the same symtab and line. */ | |
9090 | sal.pc = pc; | |
9091 | sal.explicit_pc = 1; | |
9092 | ||
6c5b2ebe PA |
9093 | struct linespec_sals lsal; |
9094 | lsal.sals = {sal}; | |
f00aae0f KS |
9095 | lsal.canonical = NULL; |
9096 | ||
6c5b2ebe | 9097 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9098 | return; |
9099 | } | |
9100 | else | |
9101 | error (_("No default breakpoint address now.")); | |
c906108c | 9102 | } |
c906108c | 9103 | } |
f00aae0f KS |
9104 | |
9105 | /* Force almost all breakpoints to be in terms of the | |
9106 | current_source_symtab (which is decode_line_1's default). | |
9107 | This should produce the results we want almost all of the | |
9108 | time while leaving default_breakpoint_* alone. | |
9109 | ||
9110 | ObjC: However, don't match an Objective-C method name which | |
9111 | may have a '+' or '-' succeeded by a '['. */ | |
9112 | cursal = get_current_source_symtab_and_line (); | |
9113 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9114 | { |
a20714ff | 9115 | const char *spec = NULL; |
cc80f267 | 9116 | |
f00aae0f | 9117 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9118 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9119 | |
f00aae0f | 9120 | if (!cursal.symtab |
a20714ff PA |
9121 | || (spec != NULL |
9122 | && strchr ("+-", spec[0]) != NULL | |
9123 | && spec[1] != '[')) | |
f00aae0f | 9124 | { |
c2f4122d | 9125 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9126 | get_last_displayed_symtab (), |
9127 | get_last_displayed_line (), | |
9128 | canonical, NULL, NULL); | |
9129 | return; | |
9130 | } | |
c906108c | 9131 | } |
f00aae0f | 9132 | |
c2f4122d | 9133 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9134 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9135 | } |
c906108c | 9136 | |
c906108c | 9137 | |
c3f6f71d | 9138 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9139 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9140 | |
b9362cc7 | 9141 | static void |
6c5b2ebe | 9142 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9143 | { |
6c5b2ebe PA |
9144 | for (auto &sal : sals) |
9145 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9146 | } |
9147 | ||
7a697b8d SS |
9148 | /* Fast tracepoints may have restrictions on valid locations. For |
9149 | instance, a fast tracepoint using a jump instead of a trap will | |
9150 | likely have to overwrite more bytes than a trap would, and so can | |
9151 | only be placed where the instruction is longer than the jump, or a | |
9152 | multi-instruction sequence does not have a jump into the middle of | |
9153 | it, etc. */ | |
9154 | ||
9155 | static void | |
9156 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9157 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9158 | { |
6c5b2ebe | 9159 | for (const auto &sal : sals) |
7a697b8d | 9160 | { |
f8eba3c6 TT |
9161 | struct gdbarch *sarch; |
9162 | ||
6c5b2ebe | 9163 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9164 | /* We fall back to GDBARCH if there is no architecture |
9165 | associated with SAL. */ | |
9166 | if (sarch == NULL) | |
9167 | sarch = gdbarch; | |
281d762b TT |
9168 | std::string msg; |
9169 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9170 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9171 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9172 | } |
9173 | } | |
9174 | ||
018d34a4 VP |
9175 | /* Given TOK, a string specification of condition and thread, as |
9176 | accepted by the 'break' command, extract the condition | |
9177 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9178 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9179 | If no condition is found, *COND_STRING is set to NULL. |
9180 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9181 | |
9182 | static void | |
bbc13ae3 | 9183 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9184 | char **cond_string, int *thread, int *task, |
9185 | char **rest) | |
018d34a4 VP |
9186 | { |
9187 | *cond_string = NULL; | |
9188 | *thread = -1; | |
ed1d1739 KS |
9189 | *task = 0; |
9190 | *rest = NULL; | |
733d554a | 9191 | bool force = false; |
ed1d1739 | 9192 | |
018d34a4 VP |
9193 | while (tok && *tok) |
9194 | { | |
bbc13ae3 | 9195 | const char *end_tok; |
018d34a4 | 9196 | int toklen; |
bbc13ae3 KS |
9197 | const char *cond_start = NULL; |
9198 | const char *cond_end = NULL; | |
cc59ec59 | 9199 | |
f1735a53 | 9200 | tok = skip_spaces (tok); |
e7e0cddf SS |
9201 | |
9202 | if ((*tok == '"' || *tok == ',') && rest) | |
9203 | { | |
9204 | *rest = savestring (tok, strlen (tok)); | |
9205 | return; | |
9206 | } | |
9207 | ||
f1735a53 | 9208 | end_tok = skip_to_space (tok); |
d634f2de | 9209 | |
018d34a4 | 9210 | toklen = end_tok - tok; |
d634f2de | 9211 | |
018d34a4 VP |
9212 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9213 | { | |
9214 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
9215 | try |
9216 | { | |
9217 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
9218 | } | |
9219 | catch (const gdb_exception_error &) | |
9220 | { | |
9221 | if (!force) | |
9222 | throw; | |
9223 | else | |
9224 | tok = tok + strlen (tok); | |
9225 | } | |
018d34a4 | 9226 | cond_end = tok; |
d634f2de | 9227 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 | 9228 | } |
733d554a TBA |
9229 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
9230 | { | |
5759831a | 9231 | tok = tok + toklen; |
733d554a TBA |
9232 | force = true; |
9233 | } | |
018d34a4 VP |
9234 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
9235 | { | |
5d5658a1 PA |
9236 | const char *tmptok; |
9237 | struct thread_info *thr; | |
d634f2de | 9238 | |
018d34a4 | 9239 | tok = end_tok + 1; |
5d5658a1 | 9240 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9241 | if (tok == tmptok) |
9242 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9243 | *thread = thr->global_num; |
bbc13ae3 | 9244 | tok = tmptok; |
018d34a4 | 9245 | } |
4a306c9a JB |
9246 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9247 | { | |
9248 | char *tmptok; | |
9249 | ||
9250 | tok = end_tok + 1; | |
bbc13ae3 | 9251 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9252 | if (tok == tmptok) |
9253 | error (_("Junk after task keyword.")); | |
9254 | if (!valid_task_id (*task)) | |
b6199126 | 9255 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9256 | tok = tmptok; |
4a306c9a | 9257 | } |
e7e0cddf SS |
9258 | else if (rest) |
9259 | { | |
9260 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9261 | return; |
e7e0cddf | 9262 | } |
018d34a4 VP |
9263 | else |
9264 | error (_("Junk at end of arguments.")); | |
9265 | } | |
9266 | } | |
9267 | ||
b5fa468f TBA |
9268 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
9269 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
9270 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
9271 | for the description of these parameters and INPUT. */ | |
9272 | ||
9273 | static void | |
9274 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
9275 | const char *input, char **cond_string, | |
9276 | int *thread, int *task, char **rest) | |
9277 | { | |
9278 | int num_failures = 0; | |
9279 | for (auto &sal : sals) | |
9280 | { | |
9281 | char *cond = nullptr; | |
9282 | int thread_id = 0; | |
9283 | int task_id = 0; | |
9284 | char *remaining = nullptr; | |
9285 | ||
9286 | /* Here we want to parse 'arg' to separate condition from thread | |
9287 | number. But because parsing happens in a context and the | |
9288 | contexts of sals might be different, try each until there is | |
9289 | success. Finding one successful parse is sufficient for our | |
9290 | goal. When setting the breakpoint we'll re-parse the | |
9291 | condition in the context of each sal. */ | |
9292 | try | |
9293 | { | |
9294 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
9295 | &task_id, &remaining); | |
9296 | *cond_string = cond; | |
9297 | *thread = thread_id; | |
9298 | *task = task_id; | |
9299 | *rest = remaining; | |
9300 | break; | |
9301 | } | |
9302 | catch (const gdb_exception_error &e) | |
9303 | { | |
9304 | num_failures++; | |
9305 | /* If no sal remains, do not continue. */ | |
9306 | if (num_failures == sals.size ()) | |
9307 | throw; | |
9308 | } | |
9309 | } | |
9310 | } | |
9311 | ||
0fb4aa4b PA |
9312 | /* Decode a static tracepoint marker spec. */ |
9313 | ||
6c5b2ebe | 9314 | static std::vector<symtab_and_line> |
f00aae0f | 9315 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9316 | { |
f00aae0f KS |
9317 | const char *p = &(*arg_p)[3]; |
9318 | const char *endp; | |
0fb4aa4b | 9319 | |
f1735a53 | 9320 | p = skip_spaces (p); |
0fb4aa4b | 9321 | |
f1735a53 | 9322 | endp = skip_to_space (p); |
0fb4aa4b | 9323 | |
81b1e71c | 9324 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9325 | |
5d9310c4 SM |
9326 | std::vector<static_tracepoint_marker> markers |
9327 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9328 | if (markers.empty ()) | |
81b1e71c TT |
9329 | error (_("No known static tracepoint marker named %s"), |
9330 | marker_str.c_str ()); | |
0fb4aa4b | 9331 | |
6c5b2ebe | 9332 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9333 | sals.reserve (markers.size ()); |
0fb4aa4b | 9334 | |
5d9310c4 | 9335 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9336 | { |
5d9310c4 SM |
9337 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9338 | sal.pc = marker.address; | |
6c5b2ebe | 9339 | sals.push_back (sal); |
5d9310c4 | 9340 | } |
0fb4aa4b | 9341 | |
0fb4aa4b PA |
9342 | *arg_p = endp; |
9343 | return sals; | |
9344 | } | |
9345 | ||
bac7c5cf GB |
9346 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9347 | according to IS_TRACEPOINT. */ | |
9348 | ||
9349 | static const struct breakpoint_ops * | |
9350 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9351 | bool is_tracepoint) | |
9352 | { | |
9353 | if (is_tracepoint) | |
9354 | { | |
9355 | if (location_type == PROBE_LOCATION) | |
9356 | return &tracepoint_probe_breakpoint_ops; | |
9357 | else | |
9358 | return &tracepoint_breakpoint_ops; | |
9359 | } | |
9360 | else | |
9361 | { | |
9362 | if (location_type == PROBE_LOCATION) | |
9363 | return &bkpt_probe_breakpoint_ops; | |
9364 | else | |
9365 | return &bkpt_breakpoint_ops; | |
9366 | } | |
9367 | } | |
9368 | ||
9369 | /* See breakpoint.h. */ | |
9370 | ||
9371 | const struct breakpoint_ops * | |
9372 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9373 | bool is_tracepoint) | |
9374 | { | |
9375 | if (location != nullptr) | |
9376 | return breakpoint_ops_for_event_location_type | |
9377 | (event_location_type (location), is_tracepoint); | |
9378 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9379 | } | |
9380 | ||
f00aae0f | 9381 | /* See breakpoint.h. */ |
0101ce28 | 9382 | |
8cdf0e15 VP |
9383 | int |
9384 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 9385 | struct event_location *location, |
e1e01040 PA |
9386 | const char *cond_string, |
9387 | int thread, const char *extra_string, | |
10a636cc | 9388 | bool force_condition, int parse_extra, |
0fb4aa4b | 9389 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9390 | int ignore_count, |
9391 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9392 | const struct breakpoint_ops *ops, |
44f238bb PA |
9393 | int from_tty, int enabled, int internal, |
9394 | unsigned flags) | |
c3f6f71d | 9395 | { |
7efd8fc2 | 9396 | struct linespec_result canonical; |
0101ce28 | 9397 | int pending = 0; |
4a306c9a | 9398 | int task = 0; |
86b17b60 | 9399 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9400 | |
348d480f PA |
9401 | gdb_assert (ops != NULL); |
9402 | ||
f00aae0f KS |
9403 | /* If extra_string isn't useful, set it to NULL. */ |
9404 | if (extra_string != NULL && *extra_string == '\0') | |
9405 | extra_string = NULL; | |
9406 | ||
a70b8144 | 9407 | try |
b78a6381 | 9408 | { |
f00aae0f | 9409 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9410 | } |
230d2906 | 9411 | catch (const gdb_exception_error &e) |
0101ce28 | 9412 | { |
492d29ea PA |
9413 | /* If caller is interested in rc value from parse, set |
9414 | value. */ | |
9415 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9416 | { |
05ff989b AC |
9417 | /* If pending breakpoint support is turned off, throw |
9418 | error. */ | |
fa8d40ab JJ |
9419 | |
9420 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9421 | throw; |
723a2275 VP |
9422 | |
9423 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9424 | |
dda83cd7 | 9425 | /* If pending breakpoint support is auto query and the user |
05ff989b | 9426 | selects no, then simply return the error code. */ |
059fb39f | 9427 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9428 | && !nquery (_("Make %s pending on future shared library load? "), |
9429 | bptype_string (type_wanted))) | |
fd9b8c24 | 9430 | return 0; |
fa8d40ab | 9431 | |
05ff989b AC |
9432 | /* At this point, either the user was queried about setting |
9433 | a pending breakpoint and selected yes, or pending | |
9434 | breakpoint behavior is on and thus a pending breakpoint | |
9435 | is defaulted on behalf of the user. */ | |
f00aae0f | 9436 | pending = 1; |
0101ce28 | 9437 | } |
492d29ea | 9438 | else |
eedc3f4f | 9439 | throw; |
0101ce28 | 9440 | } |
492d29ea | 9441 | |
6c5b2ebe | 9442 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9443 | return 0; |
c3f6f71d | 9444 | |
c3f6f71d JM |
9445 | /* Resolve all line numbers to PC's and verify that the addresses |
9446 | are ok for the target. */ | |
0101ce28 | 9447 | if (!pending) |
f8eba3c6 | 9448 | { |
6c5b2ebe PA |
9449 | for (auto &lsal : canonical.lsals) |
9450 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9451 | } |
c3f6f71d | 9452 | |
7a697b8d | 9453 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9454 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9455 | { |
6c5b2ebe PA |
9456 | for (const auto &lsal : canonical.lsals) |
9457 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9458 | } |
7a697b8d | 9459 | |
c3f6f71d JM |
9460 | /* Verify that condition can be parsed, before setting any |
9461 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9462 | breakpoint. */ |
0101ce28 | 9463 | if (!pending) |
c3f6f71d | 9464 | { |
e1e01040 PA |
9465 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9466 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9467 | ||
f00aae0f | 9468 | if (parse_extra) |
dda83cd7 | 9469 | { |
0878d0fa | 9470 | char *rest; |
e1e01040 | 9471 | char *cond; |
52d361e1 | 9472 | |
6c5b2ebe | 9473 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9474 | |
b5fa468f TBA |
9475 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
9476 | &cond, &thread, &task, &rest); | |
e1e01040 PA |
9477 | cond_string_copy.reset (cond); |
9478 | extra_string_copy.reset (rest); | |
dda83cd7 | 9479 | } |
2f069f6f | 9480 | else |
dda83cd7 | 9481 | { |
f00aae0f KS |
9482 | if (type_wanted != bp_dprintf |
9483 | && extra_string != NULL && *extra_string != '\0') | |
9484 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 9485 | |
10a636cc TBA |
9486 | /* Check the validity of the condition. We should error out |
9487 | if the condition is invalid at all of the locations and | |
9488 | if it is not forced. In the PARSE_EXTRA case above, this | |
9489 | check is done when parsing the EXTRA_STRING. */ | |
9490 | if (cond_string != nullptr && !force_condition) | |
9491 | { | |
9492 | int num_failures = 0; | |
9493 | const linespec_sals &lsal = canonical.lsals[0]; | |
9494 | for (const auto &sal : lsal.sals) | |
9495 | { | |
9496 | const char *cond = cond_string; | |
9497 | try | |
9498 | { | |
9499 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
9500 | /* One success is sufficient to keep going. */ | |
9501 | break; | |
9502 | } | |
9503 | catch (const gdb_exception_error &) | |
9504 | { | |
9505 | num_failures++; | |
9506 | /* If this is the last sal, error out. */ | |
9507 | if (num_failures == lsal.sals.size ()) | |
9508 | throw; | |
9509 | } | |
9510 | } | |
9511 | } | |
9512 | ||
0878d0fa YQ |
9513 | /* Create a private copy of condition string. */ |
9514 | if (cond_string) | |
e1e01040 | 9515 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9516 | /* Create a private copy of any extra string. */ |
9517 | if (extra_string) | |
e1e01040 | 9518 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 9519 | } |
0fb4aa4b | 9520 | |
52d361e1 | 9521 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9522 | std::move (cond_string_copy), |
9523 | std::move (extra_string_copy), | |
9524 | type_wanted, | |
d9b3f62e PA |
9525 | tempflag ? disp_del : disp_donttouch, |
9526 | thread, task, ignore_count, ops, | |
44f238bb | 9527 | from_tty, enabled, internal, flags); |
c906108c | 9528 | } |
0101ce28 JJ |
9529 | else |
9530 | { | |
a5e364af | 9531 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9532 | |
a5e364af | 9533 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9534 | b->location = copy_event_location (location); |
bfccc43c | 9535 | |
f00aae0f KS |
9536 | if (parse_extra) |
9537 | b->cond_string = NULL; | |
e12c7713 MK |
9538 | else |
9539 | { | |
9540 | /* Create a private copy of condition string. */ | |
e1e01040 | 9541 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9542 | b->thread = thread; |
e12c7713 | 9543 | } |
f00aae0f KS |
9544 | |
9545 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9546 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9547 | b->ignore_count = ignore_count; |
0101ce28 | 9548 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9549 | b->condition_not_parsed = 1; |
41447f92 | 9550 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 9551 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 9552 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 9553 | b->pspace = current_program_space; |
8bea4e01 | 9554 | |
b270e6f9 | 9555 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9556 | } |
9557 | ||
6c5b2ebe | 9558 | if (canonical.lsals.size () > 1) |
95a42b64 | 9559 | { |
3e43a32a MS |
9560 | warning (_("Multiple breakpoints were set.\nUse the " |
9561 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9562 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9563 | } |
9564 | ||
44702360 | 9565 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9566 | |
9567 | return 1; | |
c3f6f71d | 9568 | } |
c906108c | 9569 | |
348d480f | 9570 | /* Set a breakpoint. |
72b2ff0e VP |
9571 | ARG is a string describing breakpoint address, |
9572 | condition, and thread. | |
9573 | FLAG specifies if a breakpoint is hardware on, | |
9574 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9575 | and BP_TEMPFLAG. */ | |
348d480f | 9576 | |
98deb0da | 9577 | static void |
f2fc3015 | 9578 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9579 | { |
72b2ff0e | 9580 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9581 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9582 | ? bp_hardware_breakpoint | |
9583 | : bp_breakpoint); | |
f00aae0f | 9584 | |
ffc2605c | 9585 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9586 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9587 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9588 | |
8cdf0e15 | 9589 | create_breakpoint (get_current_arch (), |
ffc2605c | 9590 | location.get (), |
10a636cc | 9591 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 9592 | tempflag, type_wanted, |
8cdf0e15 VP |
9593 | 0 /* Ignore count */, |
9594 | pending_break_support, | |
55aa24fb | 9595 | ops, |
8cdf0e15 | 9596 | from_tty, |
84f4c1fe | 9597 | 1 /* enabled */, |
44f238bb PA |
9598 | 0 /* internal */, |
9599 | 0); | |
c906108c SS |
9600 | } |
9601 | ||
c906108c SS |
9602 | /* Helper function for break_command_1 and disassemble_command. */ |
9603 | ||
9604 | void | |
fba45db2 | 9605 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9606 | { |
9607 | CORE_ADDR pc; | |
9608 | ||
9609 | if (sal->pc == 0 && sal->symtab != NULL) | |
9610 | { | |
9611 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9612 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9613 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9614 | sal->pc = pc; |
6a048695 | 9615 | |
4a64f543 | 9616 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9617 | number, then skip the function prologue if necessary. */ |
6a048695 | 9618 | if (sal->explicit_line) |
059acae7 | 9619 | skip_prologue_sal (sal); |
c906108c SS |
9620 | } |
9621 | ||
9622 | if (sal->section == 0 && sal->symtab != NULL) | |
9623 | { | |
346d1dfe | 9624 | const struct blockvector *bv; |
3977b71f | 9625 | const struct block *b; |
c5aa993b | 9626 | struct symbol *sym; |
c906108c | 9627 | |
43f3e411 DE |
9628 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9629 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9630 | if (bv != NULL) |
9631 | { | |
7f0df278 | 9632 | sym = block_linkage_function (b); |
c906108c SS |
9633 | if (sym != NULL) |
9634 | { | |
eb822aa6 | 9635 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
ebbc3a7d | 9636 | sal->section = sym->obj_section (SYMTAB_OBJFILE (sal->symtab)); |
c906108c SS |
9637 | } |
9638 | else | |
9639 | { | |
4a64f543 | 9640 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9641 | just have to look harder. This case can be executed |
9642 | if we have line numbers but no functions (as can | |
9643 | happen in assembly source). */ | |
c906108c | 9644 | |
5ed8105e | 9645 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9646 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9647 | |
5ed8105e | 9648 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9649 | if (msym.minsym) |
1db66e34 | 9650 | sal->section = msym.obj_section (); |
c906108c SS |
9651 | } |
9652 | } | |
9653 | } | |
9654 | } | |
9655 | ||
9656 | void | |
0b39b52e | 9657 | break_command (const char *arg, int from_tty) |
c906108c | 9658 | { |
db107f19 | 9659 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9660 | } |
9661 | ||
c906108c | 9662 | void |
0b39b52e | 9663 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9664 | { |
db107f19 | 9665 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9666 | } |
9667 | ||
c906108c | 9668 | static void |
0b39b52e | 9669 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9670 | { |
db107f19 | 9671 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9672 | } |
9673 | ||
9674 | static void | |
0b39b52e | 9675 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9676 | { |
db107f19 | 9677 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9678 | } |
9679 | ||
9680 | static void | |
ee7ddd71 | 9681 | stop_command (const char *arg, int from_tty) |
c906108c | 9682 | { |
a3f17187 | 9683 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9684 | Usage: stop in <function | address>\n\ |
a3f17187 | 9685 | stop at <line>\n")); |
c906108c SS |
9686 | } |
9687 | ||
9688 | static void | |
4495129a | 9689 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9690 | { |
9691 | int badInput = 0; | |
9692 | ||
cafb3438 | 9693 | if (arg == NULL) |
c906108c SS |
9694 | badInput = 1; |
9695 | else if (*arg != '*') | |
9696 | { | |
4495129a | 9697 | const char *argptr = arg; |
c906108c SS |
9698 | int hasColon = 0; |
9699 | ||
4a64f543 | 9700 | /* Look for a ':'. If this is a line number specification, then |
dda83cd7 SM |
9701 | say it is bad, otherwise, it should be an address or |
9702 | function/method name. */ | |
c906108c | 9703 | while (*argptr && !hasColon) |
c5aa993b JM |
9704 | { |
9705 | hasColon = (*argptr == ':'); | |
9706 | argptr++; | |
9707 | } | |
c906108c SS |
9708 | |
9709 | if (hasColon) | |
c5aa993b | 9710 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9711 | else |
c5aa993b | 9712 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9713 | } |
9714 | ||
9715 | if (badInput) | |
a3f17187 | 9716 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9717 | else |
db107f19 | 9718 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9719 | } |
9720 | ||
9721 | static void | |
4495129a | 9722 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9723 | { |
9724 | int badInput = 0; | |
9725 | ||
cafb3438 | 9726 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9727 | badInput = 1; |
9728 | else | |
9729 | { | |
4495129a | 9730 | const char *argptr = arg; |
c906108c SS |
9731 | int hasColon = 0; |
9732 | ||
4a64f543 | 9733 | /* Look for a ':'. If there is a '::' then get out, otherwise |
dda83cd7 | 9734 | it is probably a line number. */ |
c906108c | 9735 | while (*argptr && !hasColon) |
c5aa993b JM |
9736 | { |
9737 | hasColon = (*argptr == ':'); | |
9738 | argptr++; | |
9739 | } | |
c906108c SS |
9740 | |
9741 | if (hasColon) | |
c5aa993b | 9742 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9743 | else |
c5aa993b | 9744 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9745 | } |
9746 | ||
9747 | if (badInput) | |
65e65158 | 9748 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9749 | else |
db107f19 | 9750 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9751 | } |
9752 | ||
e7e0cddf SS |
9753 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9754 | with a prewired command list consisting of a single output command, | |
9755 | built from extra arguments supplied on the dprintf command | |
9756 | line. */ | |
9757 | ||
da821c7b | 9758 | static void |
0b39b52e | 9759 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9760 | { |
ffc2605c | 9761 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9762 | |
9763 | /* If non-NULL, ARG should have been advanced past the location; | |
9764 | the next character must be ','. */ | |
9765 | if (arg != NULL) | |
9766 | { | |
9767 | if (arg[0] != ',' || arg[1] == '\0') | |
9768 | error (_("Format string required")); | |
9769 | else | |
9770 | { | |
9771 | /* Skip the comma. */ | |
9772 | ++arg; | |
9773 | } | |
9774 | } | |
9775 | ||
e7e0cddf | 9776 | create_breakpoint (get_current_arch (), |
ffc2605c | 9777 | location.get (), |
10a636cc | 9778 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9779 | 0, bp_dprintf, |
9780 | 0 /* Ignore count */, | |
9781 | pending_break_support, | |
9782 | &dprintf_breakpoint_ops, | |
9783 | from_tty, | |
9784 | 1 /* enabled */, | |
9785 | 0 /* internal */, | |
9786 | 0); | |
9787 | } | |
9788 | ||
d3ce09f5 | 9789 | static void |
0b39b52e | 9790 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9791 | { |
9792 | error (_("May only run agent-printf on the target")); | |
9793 | } | |
9794 | ||
f1310107 TJB |
9795 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9796 | ranged breakpoints. */ | |
9797 | ||
9798 | static int | |
9799 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9800 | const address_space *aspace, |
09ac7c10 TT |
9801 | CORE_ADDR bp_addr, |
9802 | const struct target_waitstatus *ws) | |
f1310107 | 9803 | { |
09ac7c10 | 9804 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9805 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9806 | return 0; |
9807 | ||
f1310107 TJB |
9808 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9809 | bl->length, aspace, bp_addr); | |
9810 | } | |
9811 | ||
9812 | /* Implement the "resources_needed" breakpoint_ops method for | |
9813 | ranged breakpoints. */ | |
9814 | ||
9815 | static int | |
9816 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9817 | { | |
9818 | return target_ranged_break_num_registers (); | |
9819 | } | |
9820 | ||
9821 | /* Implement the "print_it" breakpoint_ops method for | |
9822 | ranged breakpoints. */ | |
9823 | ||
9824 | static enum print_stop_action | |
348d480f | 9825 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9826 | { |
348d480f | 9827 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9828 | struct bp_location *bl = b->loc; |
79a45e25 | 9829 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9830 | |
9831 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9832 | ||
9833 | /* Ranged breakpoints have only one location. */ | |
9834 | gdb_assert (bl && bl->next == NULL); | |
9835 | ||
9836 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9837 | |
9838 | maybe_print_thread_hit_breakpoint (uiout); | |
9839 | ||
f1310107 | 9840 | if (b->disposition == disp_del) |
112e8700 | 9841 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9842 | else |
112e8700 SM |
9843 | uiout->text ("Ranged breakpoint "); |
9844 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9845 | { |
112e8700 | 9846 | uiout->field_string ("reason", |
f1310107 | 9847 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9848 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9849 | } |
381befee | 9850 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9851 | uiout->text (", "); |
f1310107 TJB |
9852 | |
9853 | return PRINT_SRC_AND_LOC; | |
9854 | } | |
9855 | ||
9856 | /* Implement the "print_one" breakpoint_ops method for | |
9857 | ranged breakpoints. */ | |
9858 | ||
9859 | static void | |
9860 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9861 | struct bp_location **last_loc) | |
9862 | { | |
9863 | struct bp_location *bl = b->loc; | |
9864 | struct value_print_options opts; | |
79a45e25 | 9865 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9866 | |
9867 | /* Ranged breakpoints have only one location. */ | |
9868 | gdb_assert (bl && bl->next == NULL); | |
9869 | ||
9870 | get_user_print_options (&opts); | |
9871 | ||
9872 | if (opts.addressprint) | |
9873 | /* We don't print the address range here, it will be printed later | |
9874 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9875 | uiout->field_skip ("addr"); |
f1310107 TJB |
9876 | annotate_field (5); |
9877 | print_breakpoint_location (b, bl); | |
9878 | *last_loc = bl; | |
9879 | } | |
9880 | ||
9881 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9882 | ranged breakpoints. */ | |
9883 | ||
9884 | static void | |
9885 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9886 | struct ui_out *uiout) | |
9887 | { | |
9888 | CORE_ADDR address_start, address_end; | |
9889 | struct bp_location *bl = b->loc; | |
d7e74731 | 9890 | string_file stb; |
f1310107 TJB |
9891 | |
9892 | gdb_assert (bl); | |
9893 | ||
9894 | address_start = bl->address; | |
9895 | address_end = address_start + bl->length - 1; | |
9896 | ||
112e8700 | 9897 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9898 | stb.printf ("[%s, %s]", |
9899 | print_core_address (bl->gdbarch, address_start), | |
9900 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9901 | uiout->field_stream ("addr", stb); |
9902 | uiout->text ("\n"); | |
f1310107 TJB |
9903 | } |
9904 | ||
9905 | /* Implement the "print_mention" breakpoint_ops method for | |
9906 | ranged breakpoints. */ | |
9907 | ||
9908 | static void | |
9909 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9910 | { | |
9911 | struct bp_location *bl = b->loc; | |
79a45e25 | 9912 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9913 | |
9914 | gdb_assert (bl); | |
9915 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9916 | ||
2d33446d TT |
9917 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9918 | b->number, paddress (bl->gdbarch, bl->address), | |
9919 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9920 | } |
9921 | ||
9922 | /* Implement the "print_recreate" breakpoint_ops method for | |
9923 | ranged breakpoints. */ | |
9924 | ||
9925 | static void | |
9926 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9927 | { | |
f00aae0f | 9928 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9929 | event_location_to_string (b->location.get ()), |
9930 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9931 | print_recreate_thread (b, fp); |
f1310107 TJB |
9932 | } |
9933 | ||
9934 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9935 | ||
2060206e | 9936 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9937 | |
9938 | /* Find the address where the end of the breakpoint range should be | |
9939 | placed, given the SAL of the end of the range. This is so that if | |
9940 | the user provides a line number, the end of the range is set to the | |
9941 | last instruction of the given line. */ | |
9942 | ||
9943 | static CORE_ADDR | |
9944 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9945 | { | |
9946 | CORE_ADDR end; | |
9947 | ||
9948 | /* If the user provided a PC value, use it. Otherwise, | |
9949 | find the address of the end of the given location. */ | |
9950 | if (sal.explicit_pc) | |
9951 | end = sal.pc; | |
9952 | else | |
9953 | { | |
9954 | int ret; | |
9955 | CORE_ADDR start; | |
9956 | ||
9957 | ret = find_line_pc_range (sal, &start, &end); | |
9958 | if (!ret) | |
9959 | error (_("Could not find location of the end of the range.")); | |
9960 | ||
9961 | /* find_line_pc_range returns the start of the next line. */ | |
9962 | end--; | |
9963 | } | |
9964 | ||
9965 | return end; | |
9966 | } | |
9967 | ||
9968 | /* Implement the "break-range" CLI command. */ | |
9969 | ||
9970 | static void | |
0b39b52e | 9971 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9972 | { |
f2fc3015 | 9973 | const char *arg_start; |
f1310107 TJB |
9974 | struct linespec_result canonical_start, canonical_end; |
9975 | int bp_count, can_use_bp, length; | |
9976 | CORE_ADDR end; | |
9977 | struct breakpoint *b; | |
f1310107 TJB |
9978 | |
9979 | /* We don't support software ranged breakpoints. */ | |
9980 | if (target_ranged_break_num_registers () < 0) | |
9981 | error (_("This target does not support hardware ranged breakpoints.")); | |
9982 | ||
9983 | bp_count = hw_breakpoint_used_count (); | |
9984 | bp_count += target_ranged_break_num_registers (); | |
9985 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9986 | bp_count, 0); | |
9987 | if (can_use_bp < 0) | |
9988 | error (_("Hardware breakpoints used exceeds limit.")); | |
9989 | ||
f8eba3c6 | 9990 | arg = skip_spaces (arg); |
f1310107 TJB |
9991 | if (arg == NULL || arg[0] == '\0') |
9992 | error(_("No address range specified.")); | |
9993 | ||
f8eba3c6 | 9994 | arg_start = arg; |
ffc2605c TT |
9995 | event_location_up start_location = string_to_event_location (&arg, |
9996 | current_language); | |
9997 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9998 | |
9999 | if (arg[0] != ',') | |
10000 | error (_("Too few arguments.")); | |
6c5b2ebe | 10001 | else if (canonical_start.lsals.empty ()) |
f1310107 | 10002 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 10003 | |
6c5b2ebe | 10004 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 10005 | |
6c5b2ebe PA |
10006 | if (canonical_start.lsals.size () > 1 |
10007 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
10008 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10009 | ||
6c5b2ebe | 10010 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 10011 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
10012 | |
10013 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10014 | arg = skip_spaces (arg); |
f1310107 TJB |
10015 | |
10016 | /* Parse the end location. */ | |
10017 | ||
f1310107 TJB |
10018 | arg_start = arg; |
10019 | ||
f8eba3c6 | 10020 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10021 | parse_breakpoint_sals because we need to specify the start location's |
10022 | symtab and line as the default symtab and line for the end of the | |
10023 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10024 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
10025 | event_location_up end_location = string_to_event_location (&arg, |
10026 | current_language); | |
10027 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
10028 | sal_start.symtab, sal_start.line, |
10029 | &canonical_end, NULL, NULL); | |
10030 | ||
6c5b2ebe | 10031 | if (canonical_end.lsals.empty ()) |
f1310107 | 10032 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 10033 | |
6c5b2ebe PA |
10034 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
10035 | if (canonical_end.lsals.size () > 1 | |
10036 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10037 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10038 | ||
6c5b2ebe | 10039 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10040 | |
10041 | end = find_breakpoint_range_end (sal_end); | |
10042 | if (sal_start.pc > end) | |
177b42fe | 10043 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10044 | |
10045 | length = end - sal_start.pc + 1; | |
10046 | if (length < 0) | |
10047 | /* Length overflowed. */ | |
10048 | error (_("Address range too large.")); | |
10049 | else if (length == 1) | |
10050 | { | |
10051 | /* This range is simple enough to be handled by | |
10052 | the `hbreak' command. */ | |
81b1e71c | 10053 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10054 | |
10055 | return; | |
10056 | } | |
10057 | ||
10058 | /* Now set up the breakpoint. */ | |
10059 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10060 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10061 | set_breakpoint_count (breakpoint_count + 1); |
10062 | b->number = breakpoint_count; | |
10063 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10064 | b->location = std::move (start_location); |
10065 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10066 | b->loc->length = length; |
10067 | ||
f1310107 | 10068 | mention (b); |
76727919 | 10069 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 10070 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10071 | } |
10072 | ||
4a64f543 MS |
10073 | /* Return non-zero if EXP is verified as constant. Returned zero |
10074 | means EXP is variable. Also the constant detection may fail for | |
10075 | some constant expressions and in such case still falsely return | |
10076 | zero. */ | |
2e6e3d9c | 10077 | |
dab72643 | 10078 | static bool |
65d79d4b SDJ |
10079 | watchpoint_exp_is_const (const struct expression *exp) |
10080 | { | |
1eaebe02 | 10081 | return exp->op->constant_p (); |
65d79d4b SDJ |
10082 | } |
10083 | ||
c1fc2657 | 10084 | /* Watchpoint destructor. */ |
3a5c3e22 | 10085 | |
c1fc2657 | 10086 | watchpoint::~watchpoint () |
3a5c3e22 | 10087 | { |
c1fc2657 SM |
10088 | xfree (this->exp_string); |
10089 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10090 | } |
10091 | ||
348d480f PA |
10092 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10093 | ||
10094 | static void | |
10095 | re_set_watchpoint (struct breakpoint *b) | |
10096 | { | |
3a5c3e22 PA |
10097 | struct watchpoint *w = (struct watchpoint *) b; |
10098 | ||
348d480f PA |
10099 | /* Watchpoint can be either on expression using entirely global |
10100 | variables, or it can be on local variables. | |
10101 | ||
10102 | Watchpoints of the first kind are never auto-deleted, and even | |
10103 | persist across program restarts. Since they can use variables | |
10104 | from shared libraries, we need to reparse expression as libraries | |
10105 | are loaded and unloaded. | |
10106 | ||
10107 | Watchpoints on local variables can also change meaning as result | |
10108 | of solib event. For example, if a watchpoint uses both a local | |
10109 | and a global variables in expression, it's a local watchpoint, | |
10110 | but unloading of a shared library will make the expression | |
10111 | invalid. This is not a very common use case, but we still | |
10112 | re-evaluate expression, to avoid surprises to the user. | |
10113 | ||
10114 | Note that for local watchpoints, we re-evaluate it only if | |
10115 | watchpoints frame id is still valid. If it's not, it means the | |
10116 | watchpoint is out of scope and will be deleted soon. In fact, | |
10117 | I'm not sure we'll ever be called in this case. | |
10118 | ||
10119 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10120 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10121 | |
3a5c3e22 PA |
10122 | Don't do anything about disabled watchpoints, since they will be |
10123 | reevaluated again when enabled. */ | |
10124 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10125 | } |
10126 | ||
77b06cd7 TJB |
10127 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10128 | ||
10129 | static int | |
10130 | insert_watchpoint (struct bp_location *bl) | |
10131 | { | |
3a5c3e22 PA |
10132 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10133 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10134 | |
10135 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10136 | w->cond_exp.get ()); |
77b06cd7 TJB |
10137 | } |
10138 | ||
10139 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10140 | ||
10141 | static int | |
73971819 | 10142 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10143 | { |
3a5c3e22 PA |
10144 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10145 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10146 | |
10147 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10148 | w->cond_exp.get ()); |
e09342b5 TJB |
10149 | } |
10150 | ||
e09342b5 | 10151 | static int |
348d480f | 10152 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10153 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10154 | const struct target_waitstatus *ws) |
e09342b5 | 10155 | { |
348d480f | 10156 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10157 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10158 | |
348d480f PA |
10159 | /* Continuable hardware watchpoints are treated as non-existent if the |
10160 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10161 | some data address). Otherwise gdb won't stop on a break instruction | |
10162 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10163 | been defined. Also skip watchpoints which we know did not trigger | |
10164 | (did not match the data address). */ | |
10165 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10166 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10167 | return 0; |
9c06b0b4 | 10168 | |
348d480f | 10169 | return 1; |
9c06b0b4 TJB |
10170 | } |
10171 | ||
348d480f PA |
10172 | static void |
10173 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10174 | { |
348d480f | 10175 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10176 | |
348d480f | 10177 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10178 | } |
10179 | ||
10180 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10181 | hardware watchpoints. */ |
9c06b0b4 TJB |
10182 | |
10183 | static int | |
348d480f | 10184 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10185 | { |
3a5c3e22 PA |
10186 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10187 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10188 | |
10189 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10190 | } |
10191 | ||
10192 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10193 | hardware watchpoints. */ |
9c06b0b4 TJB |
10194 | |
10195 | static int | |
348d480f | 10196 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10197 | { |
efa80663 PA |
10198 | /* Read and access watchpoints only work with hardware support. */ |
10199 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10200 | } |
10201 | ||
9c06b0b4 | 10202 | static enum print_stop_action |
348d480f | 10203 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10204 | { |
348d480f | 10205 | struct breakpoint *b; |
348d480f | 10206 | enum print_stop_action result; |
3a5c3e22 | 10207 | struct watchpoint *w; |
79a45e25 | 10208 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10209 | |
10210 | gdb_assert (bs->bp_location_at != NULL); | |
10211 | ||
348d480f | 10212 | b = bs->breakpoint_at; |
3a5c3e22 | 10213 | w = (struct watchpoint *) b; |
348d480f | 10214 | |
f303dbd6 PA |
10215 | annotate_watchpoint (b->number); |
10216 | maybe_print_thread_hit_breakpoint (uiout); | |
10217 | ||
d7e74731 PA |
10218 | string_file stb; |
10219 | ||
76f9c9cf | 10220 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10221 | switch (b->type) |
10222 | { | |
348d480f | 10223 | case bp_watchpoint: |
9c06b0b4 | 10224 | case bp_hardware_watchpoint: |
112e8700 SM |
10225 | if (uiout->is_mi_like_p ()) |
10226 | uiout->field_string | |
10227 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10228 | mention (b); |
76f9c9cf | 10229 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10230 | uiout->text ("\nOld value = "); |
850645cf | 10231 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10232 | uiout->field_stream ("old", stb); |
10233 | uiout->text ("\nNew value = "); | |
850645cf | 10234 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10235 | uiout->field_stream ("new", stb); |
10236 | uiout->text ("\n"); | |
348d480f PA |
10237 | /* More than one watchpoint may have been triggered. */ |
10238 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10239 | break; |
10240 | ||
10241 | case bp_read_watchpoint: | |
112e8700 SM |
10242 | if (uiout->is_mi_like_p ()) |
10243 | uiout->field_string | |
10244 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10245 | mention (b); |
76f9c9cf | 10246 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10247 | uiout->text ("\nValue = "); |
850645cf | 10248 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10249 | uiout->field_stream ("value", stb); |
10250 | uiout->text ("\n"); | |
348d480f | 10251 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10252 | break; |
10253 | ||
10254 | case bp_access_watchpoint: | |
348d480f PA |
10255 | if (bs->old_val != NULL) |
10256 | { | |
112e8700 SM |
10257 | if (uiout->is_mi_like_p ()) |
10258 | uiout->field_string | |
10259 | ("reason", | |
348d480f PA |
10260 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10261 | mention (b); | |
76f9c9cf | 10262 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10263 | uiout->text ("\nOld value = "); |
850645cf | 10264 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10265 | uiout->field_stream ("old", stb); |
10266 | uiout->text ("\nNew value = "); | |
348d480f PA |
10267 | } |
10268 | else | |
10269 | { | |
10270 | mention (b); | |
112e8700 SM |
10271 | if (uiout->is_mi_like_p ()) |
10272 | uiout->field_string | |
10273 | ("reason", | |
348d480f | 10274 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10275 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10276 | uiout->text ("\nValue = "); |
348d480f | 10277 | } |
850645cf | 10278 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10279 | uiout->field_stream ("new", stb); |
10280 | uiout->text ("\n"); | |
348d480f | 10281 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10282 | break; |
10283 | default: | |
348d480f | 10284 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10285 | } |
10286 | ||
348d480f PA |
10287 | return result; |
10288 | } | |
10289 | ||
10290 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10291 | watchpoints. */ | |
10292 | ||
10293 | static void | |
10294 | print_mention_watchpoint (struct breakpoint *b) | |
10295 | { | |
3a5c3e22 | 10296 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10297 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10298 | const char *tuple_name; |
348d480f PA |
10299 | |
10300 | switch (b->type) | |
10301 | { | |
10302 | case bp_watchpoint: | |
112e8700 | 10303 | uiout->text ("Watchpoint "); |
46b9c129 | 10304 | tuple_name = "wpt"; |
348d480f PA |
10305 | break; |
10306 | case bp_hardware_watchpoint: | |
112e8700 | 10307 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10308 | tuple_name = "wpt"; |
348d480f PA |
10309 | break; |
10310 | case bp_read_watchpoint: | |
112e8700 | 10311 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10312 | tuple_name = "hw-rwpt"; |
348d480f PA |
10313 | break; |
10314 | case bp_access_watchpoint: | |
112e8700 | 10315 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10316 | tuple_name = "hw-awpt"; |
348d480f PA |
10317 | break; |
10318 | default: | |
10319 | internal_error (__FILE__, __LINE__, | |
10320 | _("Invalid hardware watchpoint type.")); | |
10321 | } | |
10322 | ||
46b9c129 | 10323 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10324 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10325 | uiout->text (": "); |
10326 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10327 | } |
10328 | ||
10329 | /* Implement the "print_recreate" breakpoint_ops method for | |
10330 | watchpoints. */ | |
10331 | ||
10332 | static void | |
10333 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10334 | { | |
3a5c3e22 PA |
10335 | struct watchpoint *w = (struct watchpoint *) b; |
10336 | ||
348d480f PA |
10337 | switch (b->type) |
10338 | { | |
10339 | case bp_watchpoint: | |
10340 | case bp_hardware_watchpoint: | |
10341 | fprintf_unfiltered (fp, "watch"); | |
10342 | break; | |
10343 | case bp_read_watchpoint: | |
10344 | fprintf_unfiltered (fp, "rwatch"); | |
10345 | break; | |
10346 | case bp_access_watchpoint: | |
10347 | fprintf_unfiltered (fp, "awatch"); | |
10348 | break; | |
10349 | default: | |
10350 | internal_error (__FILE__, __LINE__, | |
10351 | _("Invalid watchpoint type.")); | |
10352 | } | |
10353 | ||
3a5c3e22 | 10354 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10355 | print_recreate_thread (b, fp); |
348d480f PA |
10356 | } |
10357 | ||
427cd150 TT |
10358 | /* Implement the "explains_signal" breakpoint_ops method for |
10359 | watchpoints. */ | |
10360 | ||
47591c29 | 10361 | static int |
427cd150 TT |
10362 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10363 | { | |
10364 | /* A software watchpoint cannot cause a signal other than | |
10365 | GDB_SIGNAL_TRAP. */ | |
10366 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10367 | return 0; |
427cd150 | 10368 | |
47591c29 | 10369 | return 1; |
427cd150 TT |
10370 | } |
10371 | ||
348d480f PA |
10372 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10373 | ||
2060206e | 10374 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10375 | |
10376 | /* Implement the "insert" breakpoint_ops method for | |
10377 | masked hardware watchpoints. */ | |
10378 | ||
10379 | static int | |
10380 | insert_masked_watchpoint (struct bp_location *bl) | |
10381 | { | |
3a5c3e22 PA |
10382 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10383 | ||
10384 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10385 | bl->watchpoint_type); |
10386 | } | |
10387 | ||
10388 | /* Implement the "remove" breakpoint_ops method for | |
10389 | masked hardware watchpoints. */ | |
10390 | ||
10391 | static int | |
73971819 | 10392 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10393 | { |
3a5c3e22 PA |
10394 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10395 | ||
10396 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
dda83cd7 | 10397 | bl->watchpoint_type); |
348d480f PA |
10398 | } |
10399 | ||
10400 | /* Implement the "resources_needed" breakpoint_ops method for | |
10401 | masked hardware watchpoints. */ | |
10402 | ||
10403 | static int | |
10404 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10405 | { | |
3a5c3e22 PA |
10406 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10407 | ||
10408 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10409 | } |
10410 | ||
10411 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10412 | masked hardware watchpoints. */ | |
10413 | ||
10414 | static int | |
10415 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10416 | { | |
10417 | return 0; | |
10418 | } | |
10419 | ||
10420 | /* Implement the "print_it" breakpoint_ops method for | |
10421 | masked hardware watchpoints. */ | |
10422 | ||
10423 | static enum print_stop_action | |
10424 | print_it_masked_watchpoint (bpstat bs) | |
10425 | { | |
10426 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10427 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10428 | |
10429 | /* Masked watchpoints have only one location. */ | |
10430 | gdb_assert (b->loc && b->loc->next == NULL); | |
10431 | ||
f303dbd6 PA |
10432 | annotate_watchpoint (b->number); |
10433 | maybe_print_thread_hit_breakpoint (uiout); | |
10434 | ||
348d480f PA |
10435 | switch (b->type) |
10436 | { | |
10437 | case bp_hardware_watchpoint: | |
112e8700 SM |
10438 | if (uiout->is_mi_like_p ()) |
10439 | uiout->field_string | |
10440 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10441 | break; |
10442 | ||
10443 | case bp_read_watchpoint: | |
112e8700 SM |
10444 | if (uiout->is_mi_like_p ()) |
10445 | uiout->field_string | |
10446 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10447 | break; |
10448 | ||
10449 | case bp_access_watchpoint: | |
112e8700 SM |
10450 | if (uiout->is_mi_like_p ()) |
10451 | uiout->field_string | |
10452 | ("reason", | |
348d480f PA |
10453 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10454 | break; | |
10455 | default: | |
10456 | internal_error (__FILE__, __LINE__, | |
10457 | _("Invalid hardware watchpoint type.")); | |
10458 | } | |
10459 | ||
10460 | mention (b); | |
112e8700 | 10461 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10462 | Check the underlying instruction at PC for the memory\n\ |
10463 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10464 | uiout->text ("\n"); |
9c06b0b4 TJB |
10465 | |
10466 | /* More than one watchpoint may have been triggered. */ | |
10467 | return PRINT_UNKNOWN; | |
10468 | } | |
10469 | ||
10470 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10471 | masked hardware watchpoints. */ | |
10472 | ||
10473 | static void | |
10474 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10475 | struct ui_out *uiout) | |
10476 | { | |
3a5c3e22 PA |
10477 | struct watchpoint *w = (struct watchpoint *) b; |
10478 | ||
9c06b0b4 TJB |
10479 | /* Masked watchpoints have only one location. */ |
10480 | gdb_assert (b->loc && b->loc->next == NULL); | |
10481 | ||
112e8700 SM |
10482 | uiout->text ("\tmask "); |
10483 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10484 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10485 | } |
10486 | ||
10487 | /* Implement the "print_mention" breakpoint_ops method for | |
10488 | masked hardware watchpoints. */ | |
10489 | ||
10490 | static void | |
10491 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10492 | { | |
3a5c3e22 | 10493 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10494 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10495 | const char *tuple_name; |
9c06b0b4 TJB |
10496 | |
10497 | switch (b->type) | |
10498 | { | |
10499 | case bp_hardware_watchpoint: | |
112e8700 | 10500 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10501 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10502 | break; |
10503 | case bp_read_watchpoint: | |
112e8700 | 10504 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10505 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10506 | break; |
10507 | case bp_access_watchpoint: | |
112e8700 | 10508 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10509 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10510 | break; |
10511 | default: | |
10512 | internal_error (__FILE__, __LINE__, | |
10513 | _("Invalid hardware watchpoint type.")); | |
10514 | } | |
10515 | ||
46b9c129 | 10516 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10517 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10518 | uiout->text (": "); |
10519 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10520 | } |
10521 | ||
10522 | /* Implement the "print_recreate" breakpoint_ops method for | |
10523 | masked hardware watchpoints. */ | |
10524 | ||
10525 | static void | |
10526 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10527 | { | |
3a5c3e22 | 10528 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10529 | |
10530 | switch (b->type) | |
10531 | { | |
10532 | case bp_hardware_watchpoint: | |
10533 | fprintf_unfiltered (fp, "watch"); | |
10534 | break; | |
10535 | case bp_read_watchpoint: | |
10536 | fprintf_unfiltered (fp, "rwatch"); | |
10537 | break; | |
10538 | case bp_access_watchpoint: | |
10539 | fprintf_unfiltered (fp, "awatch"); | |
10540 | break; | |
10541 | default: | |
10542 | internal_error (__FILE__, __LINE__, | |
10543 | _("Invalid hardware watchpoint type.")); | |
10544 | } | |
10545 | ||
53807e9f TT |
10546 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, |
10547 | phex (w->hw_wp_mask, sizeof (CORE_ADDR))); | |
d9b3f62e | 10548 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10549 | } |
10550 | ||
10551 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10552 | ||
2060206e | 10553 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10554 | |
10555 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10556 | ||
f2478a7e | 10557 | static bool |
9c06b0b4 TJB |
10558 | is_masked_watchpoint (const struct breakpoint *b) |
10559 | { | |
10560 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10561 | } | |
10562 | ||
53a5351d | 10563 | /* accessflag: hw_write: watch write, |
dda83cd7 | 10564 | hw_read: watch read, |
53a5351d | 10565 | hw_access: watch access (read or write) */ |
c906108c | 10566 | static void |
bbc13ae3 | 10567 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 10568 | bool just_location, bool internal) |
c906108c | 10569 | { |
c1fc2657 | 10570 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10571 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10572 | struct value *result; |
bb9d5f81 | 10573 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10574 | const char *exp_start = NULL; |
10575 | const char *exp_end = NULL; | |
10576 | const char *tok, *end_tok; | |
9c06b0b4 | 10577 | int toklen = -1; |
bbc13ae3 KS |
10578 | const char *cond_start = NULL; |
10579 | const char *cond_end = NULL; | |
c906108c | 10580 | enum bptype bp_type; |
37e4754d | 10581 | int thread = -1; |
9c06b0b4 TJB |
10582 | /* Flag to indicate whether we are going to use masks for |
10583 | the hardware watchpoint. */ | |
2e362716 | 10584 | bool use_mask = false; |
9c06b0b4 | 10585 | CORE_ADDR mask = 0; |
c906108c | 10586 | |
37e4754d LM |
10587 | /* Make sure that we actually have parameters to parse. */ |
10588 | if (arg != NULL && arg[0] != '\0') | |
10589 | { | |
bbc13ae3 KS |
10590 | const char *value_start; |
10591 | ||
10592 | exp_end = arg + strlen (arg); | |
37e4754d | 10593 | |
9c06b0b4 TJB |
10594 | /* Look for "parameter value" pairs at the end |
10595 | of the arguments string. */ | |
bbc13ae3 | 10596 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10597 | { |
10598 | /* Skip whitespace at the end of the argument list. */ | |
10599 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10600 | tok--; | |
10601 | ||
10602 | /* Find the beginning of the last token. | |
10603 | This is the value of the parameter. */ | |
10604 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10605 | tok--; | |
10606 | value_start = tok + 1; | |
10607 | ||
10608 | /* Skip whitespace. */ | |
10609 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10610 | tok--; | |
10611 | ||
10612 | end_tok = tok; | |
10613 | ||
10614 | /* Find the beginning of the second to last token. | |
10615 | This is the parameter itself. */ | |
10616 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10617 | tok--; | |
10618 | tok++; | |
10619 | toklen = end_tok - tok + 1; | |
10620 | ||
61012eef | 10621 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10622 | { |
5d5658a1 | 10623 | struct thread_info *thr; |
9c06b0b4 TJB |
10624 | /* At this point we've found a "thread" token, which means |
10625 | the user is trying to set a watchpoint that triggers | |
10626 | only in a specific thread. */ | |
5d5658a1 | 10627 | const char *endp; |
37e4754d | 10628 | |
9c06b0b4 TJB |
10629 | if (thread != -1) |
10630 | error(_("You can specify only one thread.")); | |
37e4754d | 10631 | |
9c06b0b4 | 10632 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10633 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10634 | |
5d5658a1 | 10635 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10636 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10637 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10638 | |
5d5658a1 | 10639 | thread = thr->global_num; |
9c06b0b4 | 10640 | } |
61012eef | 10641 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10642 | { |
10643 | /* We've found a "mask" token, which means the user wants to | |
10644 | create a hardware watchpoint that is going to have the mask | |
10645 | facility. */ | |
10646 | struct value *mask_value, *mark; | |
37e4754d | 10647 | |
9c06b0b4 TJB |
10648 | if (use_mask) |
10649 | error(_("You can specify only one mask.")); | |
37e4754d | 10650 | |
2e362716 | 10651 | use_mask = just_location = true; |
37e4754d | 10652 | |
9c06b0b4 TJB |
10653 | mark = value_mark (); |
10654 | mask_value = parse_to_comma_and_eval (&value_start); | |
10655 | mask = value_as_address (mask_value); | |
10656 | value_free_to_mark (mark); | |
10657 | } | |
10658 | else | |
10659 | /* We didn't recognize what we found. We should stop here. */ | |
10660 | break; | |
37e4754d | 10661 | |
9c06b0b4 TJB |
10662 | /* Truncate the string and get rid of the "parameter value" pair before |
10663 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10664 | exp_end = tok; |
9c06b0b4 | 10665 | } |
37e4754d | 10666 | } |
bbc13ae3 KS |
10667 | else |
10668 | exp_end = arg; | |
37e4754d | 10669 | |
bbc13ae3 KS |
10670 | /* Parse the rest of the arguments. From here on out, everything |
10671 | is in terms of a newly allocated string instead of the original | |
10672 | ARG. */ | |
81b1e71c TT |
10673 | std::string expression (arg, exp_end - arg); |
10674 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10675 | innermost_block_tracker tracker; |
10676 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10677 | exp_end = arg; |
fa8a61dc TT |
10678 | /* Remove trailing whitespace from the expression before saving it. |
10679 | This makes the eventual display of the expression string a bit | |
10680 | prettier. */ | |
10681 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10682 | --exp_end; | |
10683 | ||
65d79d4b | 10684 | /* Checking if the expression is not constant. */ |
4d01a485 | 10685 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10686 | { |
10687 | int len; | |
10688 | ||
10689 | len = exp_end - exp_start; | |
10690 | while (len > 0 && isspace (exp_start[len - 1])) | |
10691 | len--; | |
10692 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10693 | } | |
10694 | ||
699bd4cf | 10695 | exp_valid_block = tracker.block (); |
b926417a | 10696 | struct value *mark = value_mark (); |
850645cf | 10697 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10698 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10699 | just_location); | |
06a64a0b | 10700 | |
850645cf | 10701 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10702 | { |
850645cf TT |
10703 | saved_bitpos = value_bitpos (val_as_value); |
10704 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10705 | } |
10706 | ||
850645cf | 10707 | value_ref_ptr val; |
06a64a0b TT |
10708 | if (just_location) |
10709 | { | |
9c06b0b4 TJB |
10710 | int ret; |
10711 | ||
06a64a0b | 10712 | exp_valid_block = NULL; |
850645cf | 10713 | val = release_value (value_addr (result)); |
06a64a0b | 10714 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10715 | |
10716 | if (use_mask) | |
10717 | { | |
850645cf | 10718 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10719 | mask); |
10720 | if (ret == -1) | |
10721 | error (_("This target does not support masked watchpoints.")); | |
10722 | else if (ret == -2) | |
10723 | error (_("Invalid mask or memory region.")); | |
10724 | } | |
06a64a0b | 10725 | } |
850645cf TT |
10726 | else if (val_as_value != NULL) |
10727 | val = release_value (val_as_value); | |
c906108c | 10728 | |
f1735a53 TT |
10729 | tok = skip_spaces (arg); |
10730 | end_tok = skip_to_space (tok); | |
c906108c SS |
10731 | |
10732 | toklen = end_tok - tok; | |
10733 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10734 | { | |
10735 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10736 | innermost_block_tracker if_tracker; |
10737 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10738 | |
10739 | /* The watchpoint expression may not be local, but the condition | |
10740 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10741 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10742 | |
c906108c SS |
10743 | cond_end = tok; |
10744 | } | |
10745 | if (*tok) | |
8a3fe4f8 | 10746 | error (_("Junk at end of command.")); |
c906108c | 10747 | |
441d7c93 PA |
10748 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10749 | ||
10750 | /* Save this because create_internal_breakpoint below invalidates | |
10751 | 'wp_frame'. */ | |
10752 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10753 | |
10754 | /* If the expression is "local", then set up a "watchpoint scope" | |
10755 | breakpoint at the point where we've left the scope of the watchpoint | |
10756 | expression. Create the scope breakpoint before the watchpoint, so | |
10757 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10758 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10759 | { |
441d7c93 PA |
10760 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10761 | ||
10762 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10763 | { |
441d7c93 PA |
10764 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10765 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10766 | ||
24b21115 | 10767 | scope_breakpoint |
441d7c93 | 10768 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10769 | bp_watchpoint_scope, |
10770 | &momentary_breakpoint_ops); | |
d983da9c | 10771 | |
441d7c93 PA |
10772 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10773 | wp_frame = NULL; | |
10774 | ||
edb3359d | 10775 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10776 | |
edb3359d DJ |
10777 | /* Automatically delete the breakpoint when it hits. */ |
10778 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10779 | |
edb3359d | 10780 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10781 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10782 | |
edb3359d | 10783 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10784 | scope_breakpoint->loc->gdbarch = caller_arch; |
10785 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10786 | scope_breakpoint->loc->address |
a6d9a66e UW |
10787 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10788 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10789 | scope_breakpoint->type); |
10790 | } | |
d983da9c DJ |
10791 | } |
10792 | ||
e8369a73 AB |
10793 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10794 | watchpoints here even if hardware watchpoints are turned off, a call | |
10795 | to update_watchpoint later in this function will cause the type to | |
10796 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10797 | ||
10798 | if (accessflag == hw_read) | |
10799 | bp_type = bp_read_watchpoint; | |
10800 | else if (accessflag == hw_access) | |
10801 | bp_type = bp_access_watchpoint; | |
10802 | else | |
10803 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10804 | |
b270e6f9 | 10805 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10806 | |
348d480f | 10807 | if (use_mask) |
b270e6f9 | 10808 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10809 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10810 | else |
b270e6f9 | 10811 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10812 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10813 | w->thread = thread; |
10814 | w->disposition = disp_donttouch; | |
10815 | w->pspace = current_program_space; | |
b22e99fd | 10816 | w->exp = std::move (exp); |
3a5c3e22 PA |
10817 | w->exp_valid_block = exp_valid_block; |
10818 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10819 | if (just_location) |
10820 | { | |
850645cf TT |
10821 | struct type *t = value_type (val.get ()); |
10822 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10823 | |
43cc5389 | 10824 | w->exp_string_reparse |
f16a9f57 | 10825 | = current_language->watch_location_expression (t, addr).release (); |
06a64a0b | 10826 | |
3a5c3e22 | 10827 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10828 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10829 | } |
10830 | else | |
3a5c3e22 | 10831 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10832 | |
10833 | if (use_mask) | |
10834 | { | |
3a5c3e22 | 10835 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10836 | } |
10837 | else | |
10838 | { | |
3a5c3e22 | 10839 | w->val = val; |
bb9d5f81 PP |
10840 | w->val_bitpos = saved_bitpos; |
10841 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10842 | w->val_valid = true; |
9c06b0b4 | 10843 | } |
77b06cd7 | 10844 | |
c906108c | 10845 | if (cond_start) |
c1fc2657 | 10846 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10847 | else |
c1fc2657 | 10848 | w->cond_string = 0; |
c5aa993b | 10849 | |
441d7c93 | 10850 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10851 | { |
441d7c93 | 10852 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10853 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10854 | } |
c906108c | 10855 | else |
f6bc2008 | 10856 | { |
3a5c3e22 PA |
10857 | w->watchpoint_frame = null_frame_id; |
10858 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10859 | } |
c906108c | 10860 | |
d983da9c | 10861 | if (scope_breakpoint != NULL) |
c906108c | 10862 | { |
d983da9c DJ |
10863 | /* The scope breakpoint is related to the watchpoint. We will |
10864 | need to act on them together. */ | |
c1fc2657 | 10865 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10866 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10867 | } |
d983da9c | 10868 | |
06a64a0b TT |
10869 | if (!just_location) |
10870 | value_free_to_mark (mark); | |
2d134ed3 | 10871 | |
b270e6f9 TT |
10872 | /* Finally update the new watchpoint. This creates the locations |
10873 | that should be inserted. */ | |
10874 | update_watchpoint (w.get (), 1); | |
a9634178 | 10875 | |
b270e6f9 | 10876 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10877 | } |
10878 | ||
e09342b5 | 10879 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10880 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10881 | |
c906108c | 10882 | static int |
a6535de1 | 10883 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10884 | { |
10885 | int found_memory_cnt = 0; | |
10886 | ||
10887 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10888 | if (!can_use_hw_watchpoints) |
c906108c | 10889 | return 0; |
c5aa993b | 10890 | |
a6535de1 TT |
10891 | gdb_assert (!vals.empty ()); |
10892 | struct value *head = vals[0].get (); | |
10893 | ||
5c44784c JM |
10894 | /* Make sure that the value of the expression depends only upon |
10895 | memory contents, and values computed from them within GDB. If we | |
10896 | find any register references or function calls, we can't use a | |
10897 | hardware watchpoint. | |
10898 | ||
10899 | The idea here is that evaluating an expression generates a series | |
10900 | of values, one holding the value of every subexpression. (The | |
10901 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10902 | a*b+c.) GDB's values hold almost enough information to establish | |
10903 | the criteria given above --- they identify memory lvalues, | |
10904 | register lvalues, computed values, etcetera. So we can evaluate | |
10905 | the expression, and then scan the chain of values that leaves | |
10906 | behind to decide whether we can detect any possible change to the | |
10907 | expression's final value using only hardware watchpoints. | |
10908 | ||
10909 | However, I don't think that the values returned by inferior | |
10910 | function calls are special in any way. So this function may not | |
10911 | notice that an expression involving an inferior function call | |
10912 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10913 | for (const value_ref_ptr &iter : vals) |
c906108c | 10914 | { |
a6535de1 TT |
10915 | struct value *v = iter.get (); |
10916 | ||
5c44784c | 10917 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10918 | { |
8464be76 DJ |
10919 | if (v != head && value_lazy (v)) |
10920 | /* A lazy memory lvalue in the chain is one that GDB never | |
10921 | needed to fetch; we either just used its address (e.g., | |
10922 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10923 | in `a,b'). This doesn't apply to HEAD; if that is | |
10924 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10925 | ; |
53a5351d | 10926 | else |
5c44784c JM |
10927 | { |
10928 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10929 | it with hardware watchpoints. */ |
df407dfe | 10930 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10931 | |
10932 | /* We only watch structs and arrays if user asked for it | |
10933 | explicitly, never if they just happen to appear in a | |
10934 | middle of some value chain. */ | |
10935 | if (v == head | |
78134374 SM |
10936 | || (vtype->code () != TYPE_CODE_STRUCT |
10937 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10938 | { |
42ae5230 | 10939 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10940 | int len; |
10941 | int num_regs; | |
10942 | ||
a9634178 | 10943 | len = (target_exact_watchpoints |
e09342b5 TJB |
10944 | && is_scalar_type_recursive (vtype))? |
10945 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10946 | |
e09342b5 TJB |
10947 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10948 | if (!num_regs) | |
2e70b7b9 MS |
10949 | return 0; |
10950 | else | |
e09342b5 | 10951 | found_memory_cnt += num_regs; |
2e70b7b9 | 10952 | } |
5c44784c | 10953 | } |
c5aa993b | 10954 | } |
5086187c AC |
10955 | else if (VALUE_LVAL (v) != not_lval |
10956 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10957 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10958 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10959 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10960 | } |
10961 | ||
10962 | /* The expression itself looks suitable for using a hardware | |
10963 | watchpoint, but give the target machine a chance to reject it. */ | |
10964 | return found_memory_cnt; | |
10965 | } | |
10966 | ||
8b93c638 | 10967 | void |
2e362716 | 10968 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10969 | { |
84f4c1fe | 10970 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10971 | } |
10972 | ||
a15a5258 AB |
10973 | /* Options for the watch, awatch, and rwatch commands. */ |
10974 | ||
10975 | struct watch_options | |
10976 | { | |
10977 | /* For -location. */ | |
10978 | bool location = false; | |
10979 | }; | |
10980 | ||
10981 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10982 | ||
10983 | Historically GDB always accepted both '-location' and '-l' flags for | |
10984 | these commands (both flags being synonyms). When converting to the | |
10985 | newer option scheme only '-location' is added here. That's fine (for | |
10986 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10987 | accepted, so '-l', '-loc', are now all accepted. | |
10988 | ||
10989 | What this means is that, if in the future, we add any new flag here | |
10990 | that starts with '-l' then this will break backward compatibility, so | |
10991 | please, don't do that! */ | |
10992 | ||
10993 | static const gdb::option::option_def watch_option_defs[] = { | |
10994 | gdb::option::flag_option_def<watch_options> { | |
10995 | "location", | |
10996 | [] (watch_options *opt) { return &opt->location; }, | |
10997 | N_("\ | |
10998 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10999 | -l can be used as a short form of -location."), | |
11000 | }, | |
11001 | }; | |
11002 | ||
11003 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
11004 | commands. */ | |
11005 | ||
11006 | static gdb::option::option_def_group | |
11007 | make_watch_options_def_group (watch_options *opts) | |
11008 | { | |
11009 | return {{watch_option_defs}, opts}; | |
11010 | } | |
11011 | ||
06a64a0b TT |
11012 | /* A helper function that looks for the "-location" argument and then |
11013 | calls watch_command_1. */ | |
11014 | ||
11015 | static void | |
0b39b52e | 11016 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 11017 | { |
a15a5258 AB |
11018 | watch_options opts; |
11019 | auto grp = make_watch_options_def_group (&opts); | |
11020 | gdb::option::process_options | |
11021 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
11022 | if (arg != nullptr && *arg == '\0') | |
11023 | arg = nullptr; | |
11024 | ||
11025 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
11026 | } | |
06a64a0b | 11027 | |
a15a5258 AB |
11028 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
11029 | static void | |
11030 | watch_command_completer (struct cmd_list_element *ignore, | |
11031 | completion_tracker &tracker, | |
11032 | const char *text, const char * /*word*/) | |
11033 | { | |
11034 | const auto group = make_watch_options_def_group (nullptr); | |
11035 | if (gdb::option::complete_options | |
11036 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
11037 | return; | |
06a64a0b | 11038 | |
a15a5258 AB |
11039 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
11040 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 11041 | } |
8926118c | 11042 | |
c5aa993b | 11043 | static void |
0b39b52e | 11044 | watch_command (const char *arg, int from_tty) |
c906108c | 11045 | { |
06a64a0b | 11046 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11047 | } |
11048 | ||
8b93c638 | 11049 | void |
2e362716 | 11050 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11051 | { |
84f4c1fe | 11052 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11053 | } |
8926118c | 11054 | |
c5aa993b | 11055 | static void |
0b39b52e | 11056 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11057 | { |
06a64a0b | 11058 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11059 | } |
11060 | ||
8b93c638 | 11061 | void |
2e362716 | 11062 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11063 | { |
84f4c1fe | 11064 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11065 | } |
8926118c | 11066 | |
c5aa993b | 11067 | static void |
0b39b52e | 11068 | awatch_command (const char *arg, int from_tty) |
c906108c | 11069 | { |
06a64a0b | 11070 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11071 | } |
c906108c | 11072 | \f |
c5aa993b | 11073 | |
cfc31633 PA |
11074 | /* Data for the FSM that manages the until(location)/advance commands |
11075 | in infcmd.c. Here because it uses the mechanisms of | |
11076 | breakpoints. */ | |
c906108c | 11077 | |
46e3ed7f | 11078 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 11079 | { |
46e3ed7f | 11080 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
11081 | int thread; |
11082 | ||
df631783 PA |
11083 | /* The breakpoint set at the return address in the caller frame, |
11084 | plus breakpoints at all the destination locations. */ | |
11085 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 11086 | |
46e3ed7f | 11087 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 11088 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
11089 | : thread_fsm (cmd_interp), |
11090 | thread (thread), | |
df631783 | 11091 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
11092 | { |
11093 | } | |
cfc31633 | 11094 | |
46e3ed7f TT |
11095 | void clean_up (struct thread_info *thread) override; |
11096 | bool should_stop (struct thread_info *thread) override; | |
11097 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
11098 | }; |
11099 | ||
cfc31633 PA |
11100 | /* Implementation of the 'should_stop' FSM method for the |
11101 | until(location)/advance commands. */ | |
11102 | ||
46e3ed7f TT |
11103 | bool |
11104 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 11105 | { |
df631783 PA |
11106 | for (const breakpoint_up &bp : breakpoints) |
11107 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11108 | bp.get ()) != NULL) | |
11109 | { | |
11110 | set_finished (); | |
11111 | break; | |
11112 | } | |
cfc31633 | 11113 | |
46e3ed7f | 11114 | return true; |
cfc31633 PA |
11115 | } |
11116 | ||
11117 | /* Implementation of the 'clean_up' FSM method for the | |
11118 | until(location)/advance commands. */ | |
11119 | ||
46e3ed7f TT |
11120 | void |
11121 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 11122 | { |
cfc31633 | 11123 | /* Clean up our temporary breakpoints. */ |
df631783 | 11124 | breakpoints.clear (); |
46e3ed7f | 11125 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
11126 | } |
11127 | ||
11128 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11129 | until(location)/advance commands. */ | |
11130 | ||
46e3ed7f TT |
11131 | enum async_reply_reason |
11132 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
11133 | { |
11134 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11135 | } |
11136 | ||
c906108c | 11137 | void |
f2fc3015 | 11138 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11139 | { |
8556afb4 PA |
11140 | struct frame_info *frame; |
11141 | struct gdbarch *frame_gdbarch; | |
11142 | struct frame_id stack_frame_id; | |
11143 | struct frame_id caller_frame_id; | |
186c406b TT |
11144 | int thread; |
11145 | struct thread_info *tp; | |
c906108c | 11146 | |
70509625 | 11147 | clear_proceed_status (0); |
c906108c SS |
11148 | |
11149 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11150 | this function. */ |
c5aa993b | 11151 | |
ffc2605c | 11152 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11153 | |
6c5b2ebe PA |
11154 | std::vector<symtab_and_line> sals |
11155 | = (last_displayed_sal_is_valid () | |
11156 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11157 | get_last_displayed_symtab (), | |
11158 | get_last_displayed_line ()) | |
11159 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11160 | NULL, NULL, 0)); |
c5aa993b | 11161 | |
df631783 | 11162 | if (sals.empty ()) |
8a3fe4f8 | 11163 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11164 | |
c906108c | 11165 | if (*arg) |
8a3fe4f8 | 11166 | error (_("Junk at end of arguments.")); |
c5aa993b | 11167 | |
186c406b | 11168 | tp = inferior_thread (); |
5d5658a1 | 11169 | thread = tp->global_num; |
186c406b | 11170 | |
8556afb4 PA |
11171 | /* Note linespec handling above invalidates the frame chain. |
11172 | Installing a breakpoint also invalidates the frame chain (as it | |
11173 | may need to switch threads), so do any frame handling before | |
11174 | that. */ | |
11175 | ||
11176 | frame = get_selected_frame (NULL); | |
11177 | frame_gdbarch = get_frame_arch (frame); | |
11178 | stack_frame_id = get_stack_frame_id (frame); | |
11179 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11180 | |
ae66c1fc EZ |
11181 | /* Keep within the current frame, or in frames called by the current |
11182 | one. */ | |
edb3359d | 11183 | |
df631783 | 11184 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
11185 | |
11186 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11187 | ||
883bc8d1 | 11188 | if (frame_id_p (caller_frame_id)) |
c906108c | 11189 | { |
883bc8d1 | 11190 | struct symtab_and_line sal2; |
cfc31633 | 11191 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11192 | |
11193 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11194 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 11195 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
11196 | |
11197 | breakpoint_up caller_breakpoint | |
11198 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
11199 | caller_frame_id, bp_until); | |
11200 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 11201 | |
883bc8d1 | 11202 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11203 | lj_deleter.emplace (thread); |
c906108c | 11204 | } |
c5aa993b | 11205 | |
c70a6932 JK |
11206 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11207 | frame = NULL; | |
11208 | ||
df631783 PA |
11209 | /* If the user told us to continue until a specified location, we |
11210 | don't specify a frame at which we need to stop. Otherwise, | |
11211 | specify the selected frame, because we want to stop only at the | |
11212 | very same frame. */ | |
11213 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
11214 | ||
11215 | for (symtab_and_line &sal : sals) | |
11216 | { | |
11217 | resolve_sal_pc (&sal); | |
11218 | ||
11219 | breakpoint_up location_breakpoint | |
11220 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
11221 | stop_frame_id, bp_until); | |
11222 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
11223 | } | |
883bc8d1 | 11224 | |
46e3ed7f | 11225 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
df631783 | 11226 | std::move (breakpoints)); |
f107f563 | 11227 | |
5419bdae TT |
11228 | if (lj_deleter) |
11229 | lj_deleter->release (); | |
f107f563 | 11230 | |
cfc31633 | 11231 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11232 | } |
ae66c1fc | 11233 | |
c906108c SS |
11234 | /* This function attempts to parse an optional "if <cond>" clause |
11235 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11236 | |
c906108c SS |
11237 | Else, it returns a pointer to the condition string. (It does not |
11238 | attempt to evaluate the string against a particular block.) And, | |
11239 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11240 | if clause in the arg string. */ |
53a5351d | 11241 | |
63160a43 PA |
11242 | const char * |
11243 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11244 | { |
63160a43 | 11245 | const char *cond_string; |
c5aa993b JM |
11246 | |
11247 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11248 | return NULL; |
c5aa993b | 11249 | |
4a64f543 | 11250 | /* Skip the "if" keyword. */ |
c906108c | 11251 | (*arg) += 2; |
c5aa993b | 11252 | |
c906108c | 11253 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11254 | condition string. */ |
f1735a53 | 11255 | *arg = skip_spaces (*arg); |
c906108c | 11256 | cond_string = *arg; |
c5aa993b | 11257 | |
4a64f543 MS |
11258 | /* Assume that the condition occupies the remainder of the arg |
11259 | string. */ | |
c906108c | 11260 | (*arg) += strlen (cond_string); |
c5aa993b | 11261 | |
c906108c SS |
11262 | return cond_string; |
11263 | } | |
c5aa993b | 11264 | |
c906108c SS |
11265 | /* Commands to deal with catching events, such as signals, exceptions, |
11266 | process start/exit, etc. */ | |
c5aa993b JM |
11267 | |
11268 | typedef enum | |
11269 | { | |
44feb3ce TT |
11270 | catch_fork_temporary, catch_vfork_temporary, |
11271 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11272 | } |
11273 | catch_fork_kind; | |
11274 | ||
c906108c | 11275 | static void |
eb4c3f4a | 11276 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11277 | struct cmd_list_element *command) |
c906108c | 11278 | { |
a6d9a66e | 11279 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11280 | const char *cond_string = NULL; |
44feb3ce | 11281 | catch_fork_kind fork_kind; |
44feb3ce TT |
11282 | |
11283 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
b650a282 SM |
11284 | bool temp = (fork_kind == catch_fork_temporary |
11285 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11286 | |
44feb3ce TT |
11287 | if (!arg) |
11288 | arg = ""; | |
f1735a53 | 11289 | arg = skip_spaces (arg); |
c5aa993b | 11290 | |
c906108c | 11291 | /* The allowed syntax is: |
c5aa993b JM |
11292 | catch [v]fork |
11293 | catch [v]fork if <cond> | |
11294 | ||
4a64f543 | 11295 | First, check if there's an if clause. */ |
c906108c | 11296 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11297 | |
c906108c | 11298 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11299 | error (_("Junk at end of arguments.")); |
c5aa993b | 11300 | |
c906108c | 11301 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11302 | and enable reporting of such events. */ |
c5aa993b JM |
11303 | switch (fork_kind) |
11304 | { | |
44feb3ce TT |
11305 | case catch_fork_temporary: |
11306 | case catch_fork_permanent: | |
b650a282 | 11307 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11308 | &catch_fork_breakpoint_ops); |
c906108c | 11309 | break; |
44feb3ce TT |
11310 | case catch_vfork_temporary: |
11311 | case catch_vfork_permanent: | |
b650a282 | 11312 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11313 | &catch_vfork_breakpoint_ops); |
c906108c | 11314 | break; |
c5aa993b | 11315 | default: |
8a3fe4f8 | 11316 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11317 | break; |
c5aa993b | 11318 | } |
c906108c SS |
11319 | } |
11320 | ||
11321 | static void | |
eb4c3f4a | 11322 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11323 | struct cmd_list_element *command) |
c906108c | 11324 | { |
a6d9a66e | 11325 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11326 | const char *cond_string = NULL; |
b650a282 | 11327 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
44feb3ce TT |
11328 | |
11329 | if (!arg) | |
11330 | arg = ""; | |
f1735a53 | 11331 | arg = skip_spaces (arg); |
c906108c SS |
11332 | |
11333 | /* The allowed syntax is: | |
c5aa993b JM |
11334 | catch exec |
11335 | catch exec if <cond> | |
c906108c | 11336 | |
4a64f543 | 11337 | First, check if there's an if clause. */ |
c906108c SS |
11338 | cond_string = ep_parse_optional_if_clause (&arg); |
11339 | ||
11340 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11341 | error (_("Junk at end of arguments.")); |
c906108c | 11342 | |
b270e6f9 | 11343 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
b650a282 | 11344 | init_catchpoint (c.get (), gdbarch, temp, cond_string, |
b4d90040 PA |
11345 | &catch_exec_breakpoint_ops); |
11346 | c->exec_pathname = NULL; | |
11347 | ||
b270e6f9 | 11348 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11349 | } |
c5aa993b | 11350 | |
9ac4176b | 11351 | void |
28010a5d PA |
11352 | init_ada_exception_breakpoint (struct breakpoint *b, |
11353 | struct gdbarch *gdbarch, | |
11354 | struct symtab_and_line sal, | |
f2fc3015 | 11355 | const char *addr_string, |
c0a91b2b | 11356 | const struct breakpoint_ops *ops, |
28010a5d | 11357 | int tempflag, |
349774ef | 11358 | int enabled, |
28010a5d | 11359 | int from_tty) |
f7f9143b | 11360 | { |
f7f9143b JB |
11361 | if (from_tty) |
11362 | { | |
5af949e3 UW |
11363 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11364 | if (!loc_gdbarch) | |
11365 | loc_gdbarch = gdbarch; | |
11366 | ||
6c95b8df PA |
11367 | describe_other_breakpoints (loc_gdbarch, |
11368 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b | 11369 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
dda83cd7 SM |
11370 | version for exception catchpoints, because two catchpoints |
11371 | used for different exception names will use the same address. | |
11372 | In this case, a "breakpoint ... also set at..." warning is | |
11373 | unproductive. Besides, the warning phrasing is also a bit | |
11374 | inappropriate, we should use the word catchpoint, and tell | |
11375 | the user what type of catchpoint it is. The above is good | |
11376 | enough for now, though. */ | |
f7f9143b JB |
11377 | } |
11378 | ||
f06f1252 | 11379 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11380 | |
349774ef | 11381 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11382 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11383 | b->location = string_to_event_location (&addr_string, |
11384 | language_def (language_ada)); | |
f7f9143b | 11385 | b->language = language_ada; |
f7f9143b JB |
11386 | } |
11387 | ||
c906108c SS |
11388 | \f |
11389 | ||
81b1e71c | 11390 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11391 | |
11392 | static int | |
81b1e71c | 11393 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11394 | { |
81b1e71c TT |
11395 | uintptr_t ua = (uintptr_t) a; |
11396 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11397 | |
81b1e71c | 11398 | if (a->number < b->number) |
8a2c437b | 11399 | return -1; |
81b1e71c | 11400 | else if (a->number > b->number) |
8a2c437b TT |
11401 | return 1; |
11402 | ||
11403 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11404 | the number 0. */ | |
11405 | if (ua < ub) | |
11406 | return -1; | |
94b0e70d | 11407 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11408 | } |
11409 | ||
80f8a6eb | 11410 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11411 | |
11412 | static void | |
0b39b52e | 11413 | clear_command (const char *arg, int from_tty) |
c906108c | 11414 | { |
c906108c | 11415 | int default_match; |
c906108c | 11416 | |
6c5b2ebe PA |
11417 | std::vector<symtab_and_line> decoded_sals; |
11418 | symtab_and_line last_sal; | |
11419 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11420 | if (arg) |
11421 | { | |
6c5b2ebe PA |
11422 | decoded_sals |
11423 | = decode_line_with_current_source (arg, | |
11424 | (DECODE_LINE_FUNFIRSTLINE | |
11425 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11426 | default_match = 0; |
6c5b2ebe | 11427 | sals = decoded_sals; |
c906108c SS |
11428 | } |
11429 | else | |
11430 | { | |
1bfeeb0f JL |
11431 | /* Set sal's line, symtab, pc, and pspace to the values |
11432 | corresponding to the last call to print_frame_info. If the | |
11433 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11434 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11435 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11436 | error (_("No source file specified.")); |
c906108c | 11437 | |
c906108c | 11438 | default_match = 1; |
6c5b2ebe | 11439 | sals = last_sal; |
c906108c SS |
11440 | } |
11441 | ||
4a64f543 MS |
11442 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11443 | seems, because all existing breakpoints typically have both | |
11444 | file/line and pc set. So, if clear is given file/line, we can | |
11445 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11446 | |
11447 | We only support clearing given the address explicitly | |
11448 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11449 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11450 | due to optimization, all in one block. |
4a64f543 MS |
11451 | |
11452 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11453 | PC corresponding to the same file:line, the breakpoint won't |
11454 | be cleared. We probably can still clear the breakpoint, but | |
11455 | since the other PC value is never presented to user, user | |
11456 | can only find it by guessing, and it does not seem important | |
11457 | to support that. */ | |
11458 | ||
4a64f543 MS |
11459 | /* For each line spec given, delete bps which correspond to it. Do |
11460 | it in two passes, solely to preserve the current behavior that | |
11461 | from_tty is forced true if we delete more than one | |
11462 | breakpoint. */ | |
c906108c | 11463 | |
81b1e71c | 11464 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11465 | for (const auto &sal : sals) |
c906108c | 11466 | { |
05cba821 JK |
11467 | const char *sal_fullname; |
11468 | ||
c906108c | 11469 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
11470 | If line given (pc == 0), clear all bpts on specified line. |
11471 | If defaulting, clear all bpts on default line | |
11472 | or at default pc. | |
c5aa993b | 11473 | |
dda83cd7 | 11474 | defaulting sal.pc != 0 tests to do |
c5aa993b | 11475 | |
dda83cd7 SM |
11476 | 0 1 pc |
11477 | 1 1 pc _and_ line | |
11478 | 0 0 line | |
11479 | 1 0 <can't happen> */ | |
c906108c | 11480 | |
05cba821 JK |
11481 | sal_fullname = (sal.symtab == NULL |
11482 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11483 | |
4a64f543 | 11484 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 11485 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 11486 | { |
0d381245 | 11487 | int match = 0; |
4a64f543 | 11488 | /* Are we going to delete b? */ |
cc60f2e3 | 11489 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 | 11490 | { |
40cb8ca5 | 11491 | for (bp_location *loc : b->locations ()) |
0d381245 | 11492 | { |
f8eba3c6 TT |
11493 | /* If the user specified file:line, don't allow a PC |
11494 | match. This matches historical gdb behavior. */ | |
11495 | int pc_match = (!sal.explicit_line | |
11496 | && sal.pc | |
11497 | && (loc->pspace == sal.pspace) | |
11498 | && (loc->address == sal.pc) | |
11499 | && (!section_is_overlay (loc->section) | |
11500 | || loc->section == sal.section)); | |
4aac40c8 TT |
11501 | int line_match = 0; |
11502 | ||
11503 | if ((default_match || sal.explicit_line) | |
2f202fde | 11504 | && loc->symtab != NULL |
05cba821 | 11505 | && sal_fullname != NULL |
4aac40c8 | 11506 | && sal.pspace == loc->pspace |
05cba821 JK |
11507 | && loc->line_number == sal.line |
11508 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11509 | sal_fullname) == 0) | |
11510 | line_match = 1; | |
4aac40c8 | 11511 | |
0d381245 VP |
11512 | if (pc_match || line_match) |
11513 | { | |
11514 | match = 1; | |
11515 | break; | |
11516 | } | |
11517 | } | |
11518 | } | |
11519 | ||
11520 | if (match) | |
81b1e71c | 11521 | found.push_back (b); |
c906108c | 11522 | } |
80f8a6eb | 11523 | } |
8a2c437b | 11524 | |
80f8a6eb | 11525 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11526 | if (found.empty ()) |
80f8a6eb MS |
11527 | { |
11528 | if (arg) | |
8a3fe4f8 | 11529 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11530 | else |
8a3fe4f8 | 11531 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11532 | } |
c906108c | 11533 | |
8a2c437b | 11534 | /* Remove duplicates from the vec. */ |
81b1e71c | 11535 | std::sort (found.begin (), found.end (), |
b926417a | 11536 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11537 | { |
b926417a | 11538 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11539 | }); |
11540 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11541 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11542 | { |
b926417a | 11543 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11544 | }), |
11545 | found.end ()); | |
8a2c437b | 11546 | |
81b1e71c | 11547 | if (found.size () > 1) |
4a64f543 | 11548 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11549 | if (from_tty) |
a3f17187 | 11550 | { |
81b1e71c | 11551 | if (found.size () == 1) |
a3f17187 AC |
11552 | printf_unfiltered (_("Deleted breakpoint ")); |
11553 | else | |
11554 | printf_unfiltered (_("Deleted breakpoints ")); | |
11555 | } | |
d6e956e5 | 11556 | |
81b1e71c | 11557 | for (breakpoint *iter : found) |
80f8a6eb | 11558 | { |
c5aa993b | 11559 | if (from_tty) |
81b1e71c TT |
11560 | printf_unfiltered ("%d ", iter->number); |
11561 | delete_breakpoint (iter); | |
c906108c | 11562 | } |
80f8a6eb MS |
11563 | if (from_tty) |
11564 | putchar_unfiltered ('\n'); | |
c906108c SS |
11565 | } |
11566 | \f | |
11567 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11568 | all breakpoints that are marked for deletion, whether hit or not. | |
11569 | This is called after any breakpoint is hit, or after errors. */ | |
11570 | ||
11571 | void | |
fba45db2 | 11572 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11573 | { |
c906108c | 11574 | for (; bs; bs = bs->next) |
f431efe5 PA |
11575 | if (bs->breakpoint_at |
11576 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11577 | && bs->stop) |
f431efe5 | 11578 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11579 | |
1428b37a | 11580 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 11581 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 11582 | delete_breakpoint (b); |
c906108c SS |
11583 | } |
11584 | ||
4a64f543 | 11585 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11586 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11587 | bl_address_is_meaningful says), secondarily by ordering first |
11588 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11589 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11590 | |
11591 | static int | |
39ef2f62 | 11592 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11593 | { |
876fa593 | 11594 | if (a->address != b->address) |
39ef2f62 | 11595 | return a->address < b->address; |
876fa593 | 11596 | |
dea2aa5f LM |
11597 | /* Sort locations at the same address by their pspace number, keeping |
11598 | locations of the same inferior (in a multi-inferior environment) | |
11599 | grouped. */ | |
11600 | ||
11601 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11602 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11603 | |
876fa593 | 11604 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11605 | if (a->permanent != b->permanent) |
39ef2f62 | 11606 | return a->permanent > b->permanent; |
876fa593 | 11607 | |
7f32a4d5 PA |
11608 | /* Sort by type in order to make duplicate determination easier. |
11609 | See update_global_location_list. This is kept in sync with | |
11610 | breakpoint_locations_match. */ | |
11611 | if (a->loc_type < b->loc_type) | |
11612 | return true; | |
11613 | ||
11614 | /* Likewise, for range-breakpoints, sort by length. */ | |
11615 | if (a->loc_type == bp_loc_hardware_breakpoint | |
11616 | && b->loc_type == bp_loc_hardware_breakpoint | |
11617 | && a->length < b->length) | |
11618 | return true; | |
11619 | ||
c56a97f9 JK |
11620 | /* Make the internal GDB representation stable across GDB runs |
11621 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11622 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11623 | |
11624 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11625 | return a->owner->number < b->owner->number; |
876fa593 | 11626 | |
39ef2f62 | 11627 | return a < b; |
876fa593 JK |
11628 | } |
11629 | ||
f5336ca5 PA |
11630 | /* Set bp_locations_placed_address_before_address_max and |
11631 | bp_locations_shadow_len_after_address_max according to the current | |
11632 | content of the bp_locations array. */ | |
f7545552 TT |
11633 | |
11634 | static void | |
f5336ca5 | 11635 | bp_locations_target_extensions_update (void) |
f7545552 | 11636 | { |
f5336ca5 PA |
11637 | bp_locations_placed_address_before_address_max = 0; |
11638 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 11639 | |
48d7020b | 11640 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
11641 | { |
11642 | CORE_ADDR start, end, addr; | |
11643 | ||
11644 | if (!bp_location_has_shadow (bl)) | |
11645 | continue; | |
11646 | ||
11647 | start = bl->target_info.placed_address; | |
11648 | end = start + bl->target_info.shadow_len; | |
11649 | ||
11650 | gdb_assert (bl->address >= start); | |
11651 | addr = bl->address - start; | |
f5336ca5 PA |
11652 | if (addr > bp_locations_placed_address_before_address_max) |
11653 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11654 | |
11655 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11656 | ||
11657 | gdb_assert (bl->address < end); | |
11658 | addr = end - bl->address; | |
f5336ca5 PA |
11659 | if (addr > bp_locations_shadow_len_after_address_max) |
11660 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11661 | } |
f7545552 TT |
11662 | } |
11663 | ||
1e4d1764 YQ |
11664 | /* Download tracepoint locations if they haven't been. */ |
11665 | ||
11666 | static void | |
11667 | download_tracepoint_locations (void) | |
11668 | { | |
dd2e65cc | 11669 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11670 | |
5ed8105e | 11671 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11672 | |
f6d17b2b | 11673 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
11674 | { |
11675 | struct tracepoint *t; | |
f2a8bc8a | 11676 | int bp_location_downloaded = 0; |
1e4d1764 | 11677 | |
7ed2c994 | 11678 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11679 | ? !may_insert_fast_tracepoints |
11680 | : !may_insert_tracepoints)) | |
11681 | continue; | |
11682 | ||
dd2e65cc YQ |
11683 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11684 | { | |
11685 | if (target_can_download_tracepoint ()) | |
11686 | can_download_tracepoint = TRIBOOL_TRUE; | |
11687 | else | |
11688 | can_download_tracepoint = TRIBOOL_FALSE; | |
11689 | } | |
11690 | ||
11691 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11692 | break; | |
11693 | ||
40cb8ca5 | 11694 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
11695 | { |
11696 | /* In tracepoint, locations are _never_ duplicated, so | |
11697 | should_be_inserted is equivalent to | |
11698 | unduplicated_should_be_inserted. */ | |
11699 | if (!should_be_inserted (bl) || bl->inserted) | |
11700 | continue; | |
1e4d1764 | 11701 | |
7ed2c994 | 11702 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11703 | |
7ed2c994 | 11704 | target_download_tracepoint (bl); |
1e4d1764 | 11705 | |
7ed2c994 | 11706 | bl->inserted = 1; |
f2a8bc8a | 11707 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11708 | } |
11709 | t = (struct tracepoint *) b; | |
11710 | t->number_on_target = b->number; | |
f2a8bc8a | 11711 | if (bp_location_downloaded) |
76727919 | 11712 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11713 | } |
1e4d1764 YQ |
11714 | } |
11715 | ||
934709f0 PW |
11716 | /* Swap the insertion/duplication state between two locations. */ |
11717 | ||
11718 | static void | |
11719 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11720 | { | |
11721 | const int left_inserted = left->inserted; | |
11722 | const int left_duplicate = left->duplicate; | |
b775012e | 11723 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11724 | const struct bp_target_info left_target_info = left->target_info; |
11725 | ||
1e4d1764 YQ |
11726 | /* Locations of tracepoints can never be duplicated. */ |
11727 | if (is_tracepoint (left->owner)) | |
11728 | gdb_assert (!left->duplicate); | |
11729 | if (is_tracepoint (right->owner)) | |
11730 | gdb_assert (!right->duplicate); | |
11731 | ||
934709f0 PW |
11732 | left->inserted = right->inserted; |
11733 | left->duplicate = right->duplicate; | |
b775012e | 11734 | left->needs_update = right->needs_update; |
934709f0 PW |
11735 | left->target_info = right->target_info; |
11736 | right->inserted = left_inserted; | |
11737 | right->duplicate = left_duplicate; | |
b775012e | 11738 | right->needs_update = left_needs_update; |
934709f0 PW |
11739 | right->target_info = left_target_info; |
11740 | } | |
11741 | ||
b775012e LM |
11742 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11743 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11744 | conditions on the target's side. Such conditions need to be updated on | |
11745 | the target. */ | |
11746 | ||
11747 | static void | |
11748 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11749 | { | |
b775012e LM |
11750 | CORE_ADDR address = 0; |
11751 | int pspace_num; | |
11752 | ||
11753 | address = bl->address; | |
11754 | pspace_num = bl->pspace->num; | |
11755 | ||
11756 | /* This is only meaningful if the target is | |
11757 | evaluating conditions and if the user has | |
11758 | opted for condition evaluation on the target's | |
11759 | side. */ | |
11760 | if (gdb_evaluates_breakpoint_condition_p () | |
11761 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11762 | return; | |
11763 | ||
11764 | /* Flag all breakpoint locations with this address and | |
11765 | the same program space as the location | |
11766 | as "its condition has changed". We need to | |
11767 | update the conditions on the target's side. */ | |
e0d9a270 | 11768 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 11769 | { |
b775012e LM |
11770 | if (!is_breakpoint (loc->owner) |
11771 | || pspace_num != loc->pspace->num) | |
11772 | continue; | |
11773 | ||
11774 | /* Flag the location appropriately. We use a different state to | |
11775 | let everyone know that we already updated the set of locations | |
11776 | with addr bl->address and program space bl->pspace. This is so | |
11777 | we don't have to keep calling these functions just to mark locations | |
11778 | that have already been marked. */ | |
11779 | loc->condition_changed = condition_updated; | |
11780 | ||
11781 | /* Free the agent expression bytecode as well. We will compute | |
11782 | it later on. */ | |
833177a4 | 11783 | loc->cond_bytecode.reset (); |
b775012e LM |
11784 | } |
11785 | } | |
7f32a4d5 | 11786 | |
44702360 PA |
11787 | /* Called whether new breakpoints are created, or existing breakpoints |
11788 | deleted, to update the global location list and recompute which | |
11789 | locations are duplicate of which. | |
b775012e | 11790 | |
04086b45 PA |
11791 | The INSERT_MODE flag determines whether locations may not, may, or |
11792 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11793 | info. */ | |
b60e7edf | 11794 | |
0d381245 | 11795 | static void |
44702360 | 11796 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11797 | { |
b775012e LM |
11798 | /* Last breakpoint location address that was marked for update. */ |
11799 | CORE_ADDR last_addr = 0; | |
11800 | /* Last breakpoint location program space that was marked for update. */ | |
11801 | int last_pspace_num = -1; | |
f7545552 | 11802 | |
2d134ed3 PA |
11803 | /* Used in the duplicates detection below. When iterating over all |
11804 | bp_locations, points to the first bp_location of a given address. | |
11805 | Breakpoints and watchpoints of different types are never | |
11806 | duplicates of each other. Keep one pointer for each type of | |
11807 | breakpoint/watchpoint, so we only need to loop over all locations | |
11808 | once. */ | |
11809 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11810 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11811 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11812 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11813 | |
f5336ca5 PA |
11814 | /* Saved former bp_locations array which we compare against the newly |
11815 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
11816 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
11817 | bp_locations.clear (); | |
876fa593 | 11818 | |
43892fdf | 11819 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 11820 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 11821 | bp_locations.push_back (loc); |
7f32a4d5 PA |
11822 | |
11823 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11824 | breakpoint. Do this before deciding whether locations are | |
11825 | duplicates. Also do this before sorting because sorting order | |
11826 | depends on location type. */ | |
5d51cd5d SM |
11827 | for (bp_location *loc : bp_locations) |
11828 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 11829 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 11830 | |
5d51cd5d | 11831 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 11832 | bp_location_is_less_than); |
876fa593 | 11833 | |
f5336ca5 | 11834 | bp_locations_target_extensions_update (); |
74960c60 | 11835 | |
4a64f543 MS |
11836 | /* Identify bp_location instances that are no longer present in the |
11837 | new list, and therefore should be freed. Note that it's not | |
11838 | necessary that those locations should be removed from inferior -- | |
11839 | if there's another location at the same address (previously | |
11840 | marked as duplicate), we don't need to remove/insert the | |
11841 | location. | |
876fa593 | 11842 | |
4a64f543 MS |
11843 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11844 | and former bp_location array state respectively. */ | |
876fa593 | 11845 | |
5d51cd5d SM |
11846 | size_t loc_i = 0; |
11847 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11848 | { |
e5dd4106 | 11849 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11850 | not, we have to free it. */ |
c7d46a38 | 11851 | int found_object = 0; |
20874c92 VP |
11852 | /* Tells if the location should remain inserted in the target. */ |
11853 | int keep_in_target = 0; | |
11854 | int removed = 0; | |
876fa593 | 11855 | |
4a64f543 MS |
11856 | /* Skip LOCP entries which will definitely never be needed. |
11857 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11858 | while (loc_i < bp_locations.size () |
11859 | && bp_locations[loc_i]->address < old_loc->address) | |
11860 | loc_i++; | |
c7d46a38 | 11861 | |
5d51cd5d SM |
11862 | for (size_t loc2_i = loc_i; |
11863 | (loc2_i < bp_locations.size () | |
11864 | && bp_locations[loc2_i]->address == old_loc->address); | |
11865 | loc2_i++) | |
c7d46a38 | 11866 | { |
b775012e LM |
11867 | /* Check if this is a new/duplicated location or a duplicated |
11868 | location that had its condition modified. If so, we want to send | |
11869 | its condition to the target if evaluation of conditions is taking | |
11870 | place there. */ | |
5d51cd5d | 11871 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11872 | && (last_addr != old_loc->address |
11873 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11874 | { |
5d51cd5d | 11875 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11876 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11877 | } |
b775012e | 11878 | |
5d51cd5d | 11879 | if (bp_locations[loc2_i] == old_loc) |
b775012e | 11880 | found_object = 1; |
c7d46a38 | 11881 | } |
74960c60 | 11882 | |
b775012e LM |
11883 | /* We have already handled this address, update it so that we don't |
11884 | have to go through updates again. */ | |
11885 | last_addr = old_loc->address; | |
11886 | ||
11887 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11888 | if (!found_object) | |
11889 | force_breakpoint_reinsertion (old_loc); | |
11890 | ||
4a64f543 MS |
11891 | /* If this location is no longer present, and inserted, look if |
11892 | there's maybe a new location at the same address. If so, | |
11893 | mark that one inserted, and don't remove this one. This is | |
11894 | needed so that we don't have a time window where a breakpoint | |
11895 | at certain location is not inserted. */ | |
74960c60 | 11896 | |
876fa593 | 11897 | if (old_loc->inserted) |
0d381245 | 11898 | { |
4a64f543 MS |
11899 | /* If the location is inserted now, we might have to remove |
11900 | it. */ | |
74960c60 | 11901 | |
876fa593 | 11902 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11903 | { |
4a64f543 MS |
11904 | /* The location is still present in the location list, |
11905 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11906 | keep_in_target = 1; |
74960c60 VP |
11907 | } |
11908 | else | |
11909 | { | |
b775012e LM |
11910 | /* This location still exists, but it won't be kept in the |
11911 | target since it may have been disabled. We proceed to | |
11912 | remove its target-side condition. */ | |
11913 | ||
4a64f543 MS |
11914 | /* The location is either no longer present, or got |
11915 | disabled. See if there's another location at the | |
11916 | same address, in which case we don't need to remove | |
11917 | this one from the target. */ | |
876fa593 | 11918 | |
2bdf28a0 | 11919 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11920 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11921 | { |
5d51cd5d SM |
11922 | for (size_t loc2_i = loc_i; |
11923 | (loc2_i < bp_locations.size () | |
11924 | && bp_locations[loc2_i]->address == old_loc->address); | |
11925 | loc2_i++) | |
876fa593 | 11926 | { |
5d51cd5d | 11927 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11928 | |
7f32a4d5 PA |
11929 | if (loc2 == old_loc) |
11930 | continue; | |
11931 | ||
2d134ed3 | 11932 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11933 | { |
85d721b8 PA |
11934 | /* Read watchpoint locations are switched to |
11935 | access watchpoints, if the former are not | |
11936 | supported, but the latter are. */ | |
11937 | if (is_hardware_watchpoint (old_loc->owner)) | |
11938 | { | |
11939 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11940 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11941 | } | |
11942 | ||
934709f0 PW |
11943 | /* loc2 is a duplicated location. We need to check |
11944 | if it should be inserted in case it will be | |
11945 | unduplicated. */ | |
7f32a4d5 | 11946 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11947 | { |
934709f0 | 11948 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11949 | keep_in_target = 1; |
11950 | break; | |
11951 | } | |
876fa593 JK |
11952 | } |
11953 | } | |
11954 | } | |
74960c60 VP |
11955 | } |
11956 | ||
20874c92 VP |
11957 | if (!keep_in_target) |
11958 | { | |
834c0d03 | 11959 | if (remove_breakpoint (old_loc)) |
20874c92 | 11960 | { |
4a64f543 MS |
11961 | /* This is just about all we can do. We could keep |
11962 | this location on the global list, and try to | |
11963 | remove it next time, but there's no particular | |
11964 | reason why we will succeed next time. | |
20874c92 | 11965 | |
4a64f543 MS |
11966 | Note that at this point, old_loc->owner is still |
11967 | valid, as delete_breakpoint frees the breakpoint | |
11968 | only after calling us. */ | |
3e43a32a MS |
11969 | printf_filtered (_("warning: Error removing " |
11970 | "breakpoint %d\n"), | |
876fa593 | 11971 | old_loc->owner->number); |
20874c92 VP |
11972 | } |
11973 | removed = 1; | |
11974 | } | |
0d381245 | 11975 | } |
74960c60 VP |
11976 | |
11977 | if (!found_object) | |
1c5cfe86 | 11978 | { |
fbea99ea | 11979 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11980 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11981 | { |
db82e815 PA |
11982 | /* This location was removed from the target. In |
11983 | non-stop mode, a race condition is possible where | |
11984 | we've removed a breakpoint, but stop events for that | |
11985 | breakpoint are already queued and will arrive later. | |
11986 | We apply an heuristic to be able to distinguish such | |
11987 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11988 | breakpoint location for a bit, and will retire it | |
11989 | after we see some number of events. The theory here | |
11990 | is that reporting of events should, "on the average", | |
11991 | be fair, so after a while we'll see events from all | |
11992 | threads that have anything of interest, and no longer | |
11993 | need to keep this breakpoint location around. We | |
11994 | don't hold locations forever so to reduce chances of | |
11995 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11996 | SIGTRAP. | |
11997 | ||
11998 | The heuristic failing can be disastrous on | |
11999 | decr_pc_after_break targets. | |
12000 | ||
12001 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12002 | if we fail to recognize a late breakpoint SIGTRAP, | |
12003 | because events_till_retirement has reached 0 too | |
12004 | soon, we'll fail to do the PC adjustment, and report | |
12005 | a random SIGTRAP to the user. When the user resumes | |
12006 | the inferior, it will most likely immediately crash | |
2dec564e | 12007 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12008 | corrupted, because of being resumed e.g., in the |
12009 | middle of a multi-byte instruction, or skipped a | |
12010 | one-byte instruction. This was actually seen happen | |
12011 | on native x86-linux, and should be less rare on | |
12012 | targets that do not support new thread events, like | |
12013 | remote, due to the heuristic depending on | |
12014 | thread_count. | |
12015 | ||
12016 | Mistaking a random SIGTRAP for a breakpoint trap | |
12017 | causes similar symptoms (PC adjustment applied when | |
12018 | it shouldn't), but then again, playing with SIGTRAPs | |
12019 | behind the debugger's back is asking for trouble. | |
12020 | ||
12021 | Since hardware watchpoint traps are always | |
12022 | distinguishable from other traps, so we don't need to | |
12023 | apply keep hardware watchpoint moribund locations | |
12024 | around. We simply always ignore hardware watchpoint | |
12025 | traps we can no longer explain. */ | |
12026 | ||
5b6d1e4f PA |
12027 | process_stratum_target *proc_target = nullptr; |
12028 | for (inferior *inf : all_inferiors ()) | |
12029 | if (inf->pspace == old_loc->pspace) | |
12030 | { | |
12031 | proc_target = inf->process_target (); | |
12032 | break; | |
12033 | } | |
12034 | if (proc_target != nullptr) | |
12035 | old_loc->events_till_retirement | |
12036 | = 3 * (thread_count (proc_target) + 1); | |
12037 | else | |
12038 | old_loc->events_till_retirement = 1; | |
876fa593 | 12039 | old_loc->owner = NULL; |
20874c92 | 12040 | |
1123588c | 12041 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
12042 | } |
12043 | else | |
f431efe5 PA |
12044 | { |
12045 | old_loc->owner = NULL; | |
12046 | decref_bp_location (&old_loc); | |
12047 | } | |
20874c92 | 12048 | } |
74960c60 | 12049 | } |
1c5cfe86 | 12050 | |
348d480f PA |
12051 | /* Rescan breakpoints at the same address and section, marking the |
12052 | first one as "first" and any others as "duplicates". This is so | |
12053 | that the bpt instruction is only inserted once. If we have a | |
12054 | permanent breakpoint at the same place as BPT, make that one the | |
12055 | official one, and the rest as duplicates. Permanent breakpoints | |
12056 | are sorted first for the same address. | |
12057 | ||
12058 | Do the same for hardware watchpoints, but also considering the | |
12059 | watchpoint's type (regular/access/read) and length. */ | |
12060 | ||
12061 | bp_loc_first = NULL; | |
12062 | wp_loc_first = NULL; | |
12063 | awp_loc_first = NULL; | |
12064 | rwp_loc_first = NULL; | |
40cb8ca5 | 12065 | |
48d7020b | 12066 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
12067 | { |
12068 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12069 | non-NULL. */ | |
348d480f | 12070 | struct bp_location **loc_first_p; |
43892fdf | 12071 | breakpoint *b = loc->owner; |
348d480f | 12072 | |
6f380991 | 12073 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 12074 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
12075 | /* Don't detect duplicate for tracepoint locations because they are |
12076 | never duplicated. See the comments in field `duplicate' of | |
12077 | `struct bp_location'. */ | |
348d480f | 12078 | || is_tracepoint (b)) |
b775012e LM |
12079 | { |
12080 | /* Clear the condition modification flag. */ | |
12081 | loc->condition_changed = condition_unchanged; | |
12082 | continue; | |
12083 | } | |
348d480f | 12084 | |
348d480f PA |
12085 | if (b->type == bp_hardware_watchpoint) |
12086 | loc_first_p = &wp_loc_first; | |
12087 | else if (b->type == bp_read_watchpoint) | |
12088 | loc_first_p = &rwp_loc_first; | |
12089 | else if (b->type == bp_access_watchpoint) | |
12090 | loc_first_p = &awp_loc_first; | |
12091 | else | |
12092 | loc_first_p = &bp_loc_first; | |
12093 | ||
12094 | if (*loc_first_p == NULL | |
12095 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12096 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12097 | { | |
12098 | *loc_first_p = loc; | |
12099 | loc->duplicate = 0; | |
b775012e LM |
12100 | |
12101 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12102 | { | |
12103 | loc->needs_update = 1; | |
12104 | /* Clear the condition modification flag. */ | |
12105 | loc->condition_changed = condition_unchanged; | |
12106 | } | |
348d480f PA |
12107 | continue; |
12108 | } | |
12109 | ||
934709f0 PW |
12110 | |
12111 | /* This and the above ensure the invariant that the first location | |
12112 | is not duplicated, and is the inserted one. | |
12113 | All following are marked as duplicated, and are not inserted. */ | |
12114 | if (loc->inserted) | |
12115 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12116 | loc->duplicate = 1; |
12117 | ||
b775012e LM |
12118 | /* Clear the condition modification flag. */ |
12119 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12120 | } |
12121 | ||
a25a5a45 | 12122 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12123 | { |
04086b45 | 12124 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12125 | insert_breakpoint_locations (); |
12126 | else | |
12127 | { | |
44702360 PA |
12128 | /* Even though the caller told us to not insert new |
12129 | locations, we may still need to update conditions on the | |
12130 | target's side of breakpoints that were already inserted | |
12131 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12132 | only update conditions for locations that are marked |
12133 | "needs_update". */ | |
12134 | update_inserted_breakpoint_locations (); | |
12135 | } | |
12136 | } | |
348d480f | 12137 | |
04086b45 | 12138 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12139 | download_tracepoint_locations (); |
348d480f PA |
12140 | } |
12141 | ||
12142 | void | |
12143 | breakpoint_retire_moribund (void) | |
12144 | { | |
1123588c TT |
12145 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12146 | { | |
12147 | struct bp_location *loc = moribund_locations[ix]; | |
12148 | if (--(loc->events_till_retirement) == 0) | |
12149 | { | |
12150 | decref_bp_location (&loc); | |
12151 | unordered_remove (moribund_locations, ix); | |
12152 | --ix; | |
12153 | } | |
12154 | } | |
348d480f PA |
12155 | } |
12156 | ||
12157 | static void | |
44702360 | 12158 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12159 | { |
348d480f | 12160 | |
a70b8144 | 12161 | try |
492d29ea PA |
12162 | { |
12163 | update_global_location_list (insert_mode); | |
12164 | } | |
230d2906 | 12165 | catch (const gdb_exception_error &e) |
492d29ea PA |
12166 | { |
12167 | } | |
348d480f PA |
12168 | } |
12169 | ||
12170 | /* Clear BKP from a BPS. */ | |
12171 | ||
12172 | static void | |
12173 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12174 | { | |
12175 | bpstat bs; | |
12176 | ||
12177 | for (bs = bps; bs; bs = bs->next) | |
12178 | if (bs->breakpoint_at == bpt) | |
12179 | { | |
12180 | bs->breakpoint_at = NULL; | |
12181 | bs->old_val = NULL; | |
12182 | /* bs->commands will be freed later. */ | |
12183 | } | |
12184 | } | |
12185 | ||
12186 | /* Callback for iterate_over_threads. */ | |
12187 | static int | |
12188 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12189 | { | |
9a3c8263 | 12190 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12191 | |
12192 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12193 | return 0; | |
12194 | } | |
12195 | ||
12196 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12197 | callbacks. */ | |
12198 | ||
12199 | static void | |
12200 | say_where (struct breakpoint *b) | |
12201 | { | |
12202 | struct value_print_options opts; | |
12203 | ||
12204 | get_user_print_options (&opts); | |
12205 | ||
12206 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12207 | single string. */ | |
12208 | if (b->loc == NULL) | |
12209 | { | |
f00aae0f KS |
12210 | /* For pending locations, the output differs slightly based |
12211 | on b->extra_string. If this is non-NULL, it contains either | |
12212 | a condition or dprintf arguments. */ | |
12213 | if (b->extra_string == NULL) | |
12214 | { | |
12215 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12216 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12217 | } |
12218 | else if (b->type == bp_dprintf) | |
12219 | { | |
12220 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12221 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12222 | b->extra_string); |
12223 | } | |
12224 | else | |
12225 | { | |
12226 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12227 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12228 | b->extra_string); |
12229 | } | |
348d480f PA |
12230 | } |
12231 | else | |
12232 | { | |
2f202fde | 12233 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12234 | printf_filtered (" at %ps", |
12235 | styled_string (address_style.style (), | |
12236 | paddress (b->loc->gdbarch, | |
12237 | b->loc->address))); | |
2f202fde | 12238 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12239 | { |
12240 | /* If there is a single location, we can print the location | |
12241 | more nicely. */ | |
12242 | if (b->loc->next == NULL) | |
0bb296cb | 12243 | { |
6a831f06 PA |
12244 | const char *filename |
12245 | = symtab_to_filename_for_display (b->loc->symtab); | |
12246 | printf_filtered (": file %ps, line %d.", | |
12247 | styled_string (file_name_style.style (), | |
12248 | filename), | |
0bb296cb TT |
12249 | b->loc->line_number); |
12250 | } | |
f8eba3c6 TT |
12251 | else |
12252 | /* This is not ideal, but each location may have a | |
12253 | different file name, and this at least reflects the | |
12254 | real situation somewhat. */ | |
f00aae0f | 12255 | printf_filtered (": %s.", |
d28cd78a | 12256 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12257 | } |
348d480f PA |
12258 | |
12259 | if (b->loc->next) | |
12260 | { | |
12261 | struct bp_location *loc = b->loc; | |
12262 | int n = 0; | |
12263 | for (; loc; loc = loc->next) | |
12264 | ++n; | |
12265 | printf_filtered (" (%d locations)", n); | |
12266 | } | |
12267 | } | |
12268 | } | |
12269 | ||
5f486660 | 12270 | bp_location::~bp_location () |
348d480f | 12271 | { |
5f486660 | 12272 | xfree (function_name); |
348d480f PA |
12273 | } |
12274 | ||
c1fc2657 | 12275 | /* Destructor for the breakpoint base class. */ |
348d480f | 12276 | |
c1fc2657 | 12277 | breakpoint::~breakpoint () |
348d480f | 12278 | { |
c1fc2657 SM |
12279 | xfree (this->cond_string); |
12280 | xfree (this->extra_string); | |
348d480f PA |
12281 | } |
12282 | ||
40cb8ca5 SM |
12283 | /* See breakpoint.h. */ |
12284 | ||
12285 | bp_locations_range breakpoint::locations () | |
12286 | { | |
12287 | return bp_locations_range (this->loc); | |
12288 | } | |
12289 | ||
2060206e PA |
12290 | static struct bp_location * |
12291 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12292 | { |
5f486660 | 12293 | return new bp_location (self); |
348d480f PA |
12294 | } |
12295 | ||
2060206e PA |
12296 | static void |
12297 | base_breakpoint_re_set (struct breakpoint *b) | |
12298 | { | |
12299 | /* Nothing to re-set. */ | |
12300 | } | |
12301 | ||
12302 | #define internal_error_pure_virtual_called() \ | |
12303 | gdb_assert_not_reached ("pure virtual function called") | |
12304 | ||
12305 | static int | |
12306 | base_breakpoint_insert_location (struct bp_location *bl) | |
12307 | { | |
12308 | internal_error_pure_virtual_called (); | |
12309 | } | |
12310 | ||
12311 | static int | |
73971819 PA |
12312 | base_breakpoint_remove_location (struct bp_location *bl, |
12313 | enum remove_bp_reason reason) | |
2060206e PA |
12314 | { |
12315 | internal_error_pure_virtual_called (); | |
12316 | } | |
12317 | ||
12318 | static int | |
12319 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12320 | const address_space *aspace, |
09ac7c10 TT |
12321 | CORE_ADDR bp_addr, |
12322 | const struct target_waitstatus *ws) | |
2060206e PA |
12323 | { |
12324 | internal_error_pure_virtual_called (); | |
12325 | } | |
12326 | ||
12327 | static void | |
12328 | base_breakpoint_check_status (bpstat bs) | |
12329 | { | |
12330 | /* Always stop. */ | |
12331 | } | |
12332 | ||
12333 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12334 | errors. */ | |
12335 | ||
12336 | static int | |
12337 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12338 | { | |
12339 | internal_error_pure_virtual_called (); | |
12340 | } | |
12341 | ||
12342 | /* A "resources_needed" breakpoint_ops method that just internal | |
12343 | errors. */ | |
12344 | ||
12345 | static int | |
12346 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12347 | { | |
12348 | internal_error_pure_virtual_called (); | |
12349 | } | |
12350 | ||
12351 | static enum print_stop_action | |
12352 | base_breakpoint_print_it (bpstat bs) | |
12353 | { | |
12354 | internal_error_pure_virtual_called (); | |
12355 | } | |
12356 | ||
12357 | static void | |
12358 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12359 | struct ui_out *uiout) | |
12360 | { | |
12361 | /* nothing */ | |
12362 | } | |
12363 | ||
12364 | static void | |
12365 | base_breakpoint_print_mention (struct breakpoint *b) | |
12366 | { | |
12367 | internal_error_pure_virtual_called (); | |
12368 | } | |
12369 | ||
12370 | static void | |
12371 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12372 | { | |
12373 | internal_error_pure_virtual_called (); | |
12374 | } | |
12375 | ||
983af33b | 12376 | static void |
f00aae0f | 12377 | base_breakpoint_create_sals_from_location |
626d2320 | 12378 | (struct event_location *location, |
f00aae0f KS |
12379 | struct linespec_result *canonical, |
12380 | enum bptype type_wanted) | |
983af33b SDJ |
12381 | { |
12382 | internal_error_pure_virtual_called (); | |
12383 | } | |
12384 | ||
12385 | static void | |
12386 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12387 | struct linespec_result *c, | |
e1e01040 PA |
12388 | gdb::unique_xmalloc_ptr<char> cond_string, |
12389 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12390 | enum bptype type_wanted, |
12391 | enum bpdisp disposition, | |
12392 | int thread, | |
12393 | int task, int ignore_count, | |
12394 | const struct breakpoint_ops *o, | |
12395 | int from_tty, int enabled, | |
44f238bb | 12396 | int internal, unsigned flags) |
983af33b SDJ |
12397 | { |
12398 | internal_error_pure_virtual_called (); | |
12399 | } | |
12400 | ||
6c5b2ebe | 12401 | static std::vector<symtab_and_line> |
f00aae0f | 12402 | base_breakpoint_decode_location (struct breakpoint *b, |
626d2320 | 12403 | struct event_location *location, |
6c5b2ebe | 12404 | struct program_space *search_pspace) |
983af33b SDJ |
12405 | { |
12406 | internal_error_pure_virtual_called (); | |
12407 | } | |
12408 | ||
ab04a2af TT |
12409 | /* The default 'explains_signal' method. */ |
12410 | ||
47591c29 | 12411 | static int |
427cd150 | 12412 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12413 | { |
47591c29 | 12414 | return 1; |
ab04a2af TT |
12415 | } |
12416 | ||
9d6e6e84 HZ |
12417 | /* The default "after_condition_true" method. */ |
12418 | ||
12419 | static void | |
12420 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12421 | { | |
12422 | /* Nothing to do. */ | |
12423 | } | |
12424 | ||
ab04a2af | 12425 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12426 | { |
2060206e PA |
12427 | base_breakpoint_allocate_location, |
12428 | base_breakpoint_re_set, | |
12429 | base_breakpoint_insert_location, | |
12430 | base_breakpoint_remove_location, | |
12431 | base_breakpoint_breakpoint_hit, | |
12432 | base_breakpoint_check_status, | |
12433 | base_breakpoint_resources_needed, | |
12434 | base_breakpoint_works_in_software_mode, | |
12435 | base_breakpoint_print_it, | |
12436 | NULL, | |
12437 | base_breakpoint_print_one_detail, | |
12438 | base_breakpoint_print_mention, | |
983af33b | 12439 | base_breakpoint_print_recreate, |
5f700d83 | 12440 | base_breakpoint_create_sals_from_location, |
983af33b | 12441 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12442 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12443 | base_breakpoint_explains_signal, |
12444 | base_breakpoint_after_condition_true, | |
2060206e PA |
12445 | }; |
12446 | ||
12447 | /* Default breakpoint_ops methods. */ | |
12448 | ||
12449 | static void | |
348d480f PA |
12450 | bkpt_re_set (struct breakpoint *b) |
12451 | { | |
06edf0c0 | 12452 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12453 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12454 | { |
f00aae0f | 12455 | /* Anything without a location can't be re-set. */ |
348d480f | 12456 | delete_breakpoint (b); |
06edf0c0 | 12457 | return; |
348d480f | 12458 | } |
06edf0c0 PA |
12459 | |
12460 | breakpoint_re_set_default (b); | |
348d480f PA |
12461 | } |
12462 | ||
2060206e | 12463 | static int |
348d480f PA |
12464 | bkpt_insert_location (struct bp_location *bl) |
12465 | { | |
cd6c3b4f YQ |
12466 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12467 | ||
579c6ad9 | 12468 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12469 | bl->target_info.placed_address = addr; |
12470 | ||
348d480f | 12471 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12472 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12473 | else |
7c16b83e | 12474 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12475 | } |
12476 | ||
2060206e | 12477 | static int |
73971819 | 12478 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12479 | { |
12480 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12481 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12482 | else | |
73971819 | 12483 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12484 | } |
12485 | ||
2060206e | 12486 | static int |
348d480f | 12487 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12488 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12489 | const struct target_waitstatus *ws) |
348d480f | 12490 | { |
09ac7c10 | 12491 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12492 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12493 | return 0; |
12494 | ||
348d480f PA |
12495 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12496 | aspace, bp_addr)) | |
12497 | return 0; | |
12498 | ||
12499 | if (overlay_debugging /* unmapped overlay section */ | |
12500 | && section_is_overlay (bl->section) | |
12501 | && !section_is_mapped (bl->section)) | |
12502 | return 0; | |
12503 | ||
12504 | return 1; | |
12505 | } | |
12506 | ||
cd1608cc PA |
12507 | static int |
12508 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12509 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12510 | const struct target_waitstatus *ws) |
12511 | { | |
12512 | if (dprintf_style == dprintf_style_agent | |
12513 | && target_can_run_breakpoint_commands ()) | |
12514 | { | |
12515 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12516 | for this address it must be for a breakpoint that happens to | |
12517 | be set at the same address. */ | |
12518 | return 0; | |
12519 | } | |
12520 | ||
12521 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12522 | } | |
12523 | ||
2060206e | 12524 | static int |
348d480f PA |
12525 | bkpt_resources_needed (const struct bp_location *bl) |
12526 | { | |
12527 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12528 | ||
12529 | return 1; | |
12530 | } | |
12531 | ||
2060206e | 12532 | static enum print_stop_action |
348d480f PA |
12533 | bkpt_print_it (bpstat bs) |
12534 | { | |
348d480f PA |
12535 | struct breakpoint *b; |
12536 | const struct bp_location *bl; | |
001c8c33 | 12537 | int bp_temp; |
79a45e25 | 12538 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12539 | |
12540 | gdb_assert (bs->bp_location_at != NULL); | |
12541 | ||
b6433ede | 12542 | bl = bs->bp_location_at.get (); |
348d480f PA |
12543 | b = bs->breakpoint_at; |
12544 | ||
001c8c33 PA |
12545 | bp_temp = b->disposition == disp_del; |
12546 | if (bl->address != bl->requested_address) | |
12547 | breakpoint_adjustment_warning (bl->requested_address, | |
12548 | bl->address, | |
12549 | b->number, 1); | |
12550 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12551 | maybe_print_thread_hit_breakpoint (uiout); |
12552 | ||
112e8700 | 12553 | if (uiout->is_mi_like_p ()) |
348d480f | 12554 | { |
112e8700 | 12555 | uiout->field_string ("reason", |
001c8c33 | 12556 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12557 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12558 | } |
6a831f06 PA |
12559 | if (bp_temp) |
12560 | uiout->message ("Temporary breakpoint %pF, ", | |
12561 | signed_field ("bkptno", b->number)); | |
12562 | else | |
12563 | uiout->message ("Breakpoint %pF, ", | |
12564 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12565 | |
001c8c33 | 12566 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12567 | } |
12568 | ||
2060206e | 12569 | static void |
06edf0c0 PA |
12570 | bkpt_print_mention (struct breakpoint *b) |
12571 | { | |
112e8700 | 12572 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12573 | return; |
12574 | ||
12575 | switch (b->type) | |
12576 | { | |
12577 | case bp_breakpoint: | |
12578 | case bp_gnu_ifunc_resolver: | |
12579 | if (b->disposition == disp_del) | |
12580 | printf_filtered (_("Temporary breakpoint")); | |
12581 | else | |
12582 | printf_filtered (_("Breakpoint")); | |
12583 | printf_filtered (_(" %d"), b->number); | |
12584 | if (b->type == bp_gnu_ifunc_resolver) | |
12585 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12586 | break; | |
12587 | case bp_hardware_breakpoint: | |
12588 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12589 | break; | |
e7e0cddf SS |
12590 | case bp_dprintf: |
12591 | printf_filtered (_("Dprintf %d"), b->number); | |
12592 | break; | |
06edf0c0 PA |
12593 | } |
12594 | ||
12595 | say_where (b); | |
12596 | } | |
12597 | ||
2060206e | 12598 | static void |
06edf0c0 PA |
12599 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12600 | { | |
12601 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12602 | fprintf_unfiltered (fp, "tbreak"); | |
12603 | else if (tp->type == bp_breakpoint) | |
12604 | fprintf_unfiltered (fp, "break"); | |
12605 | else if (tp->type == bp_hardware_breakpoint | |
12606 | && tp->disposition == disp_del) | |
12607 | fprintf_unfiltered (fp, "thbreak"); | |
12608 | else if (tp->type == bp_hardware_breakpoint) | |
12609 | fprintf_unfiltered (fp, "hbreak"); | |
12610 | else | |
12611 | internal_error (__FILE__, __LINE__, | |
12612 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12613 | ||
f00aae0f | 12614 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12615 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12616 | |
12617 | /* Print out extra_string if this breakpoint is pending. It might | |
12618 | contain, for example, conditions that were set by the user. */ | |
12619 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12620 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12621 | ||
dd11a36c | 12622 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12623 | } |
12624 | ||
983af33b | 12625 | static void |
626d2320 | 12626 | bkpt_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12627 | struct linespec_result *canonical, |
12628 | enum bptype type_wanted) | |
983af33b | 12629 | { |
f00aae0f | 12630 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12631 | } |
12632 | ||
12633 | static void | |
12634 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12635 | struct linespec_result *canonical, | |
e1e01040 PA |
12636 | gdb::unique_xmalloc_ptr<char> cond_string, |
12637 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12638 | enum bptype type_wanted, |
12639 | enum bpdisp disposition, | |
12640 | int thread, | |
12641 | int task, int ignore_count, | |
12642 | const struct breakpoint_ops *ops, | |
12643 | int from_tty, int enabled, | |
44f238bb | 12644 | int internal, unsigned flags) |
983af33b | 12645 | { |
023fa29b | 12646 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12647 | std::move (cond_string), |
12648 | std::move (extra_string), | |
e7e0cddf | 12649 | type_wanted, |
983af33b SDJ |
12650 | disposition, thread, task, |
12651 | ignore_count, ops, from_tty, | |
44f238bb | 12652 | enabled, internal, flags); |
983af33b SDJ |
12653 | } |
12654 | ||
6c5b2ebe | 12655 | static std::vector<symtab_and_line> |
f00aae0f | 12656 | bkpt_decode_location (struct breakpoint *b, |
626d2320 | 12657 | struct event_location *location, |
6c5b2ebe | 12658 | struct program_space *search_pspace) |
983af33b | 12659 | { |
6c5b2ebe | 12660 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12661 | } |
12662 | ||
06edf0c0 PA |
12663 | /* Virtual table for internal breakpoints. */ |
12664 | ||
12665 | static void | |
12666 | internal_bkpt_re_set (struct breakpoint *b) | |
12667 | { | |
12668 | switch (b->type) | |
12669 | { | |
12670 | /* Delete overlay event and longjmp master breakpoints; they | |
12671 | will be reset later by breakpoint_re_set. */ | |
12672 | case bp_overlay_event: | |
12673 | case bp_longjmp_master: | |
12674 | case bp_std_terminate_master: | |
12675 | case bp_exception_master: | |
12676 | delete_breakpoint (b); | |
12677 | break; | |
12678 | ||
12679 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 12680 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
12681 | case bp_shlib_event: |
12682 | ||
12683 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12684 | it is set up, we do not want to touch it. */ | |
12685 | case bp_thread_event: | |
12686 | break; | |
12687 | } | |
12688 | } | |
12689 | ||
12690 | static void | |
12691 | internal_bkpt_check_status (bpstat bs) | |
12692 | { | |
a9b3a50f PA |
12693 | if (bs->breakpoint_at->type == bp_shlib_event) |
12694 | { | |
12695 | /* If requested, stop when the dynamic linker notifies GDB of | |
12696 | events. This allows the user to get control and place | |
12697 | breakpoints in initializer routines for dynamically loaded | |
12698 | objects (among other things). */ | |
12699 | bs->stop = stop_on_solib_events; | |
12700 | bs->print = stop_on_solib_events; | |
12701 | } | |
12702 | else | |
12703 | bs->stop = 0; | |
06edf0c0 PA |
12704 | } |
12705 | ||
12706 | static enum print_stop_action | |
12707 | internal_bkpt_print_it (bpstat bs) | |
12708 | { | |
06edf0c0 | 12709 | struct breakpoint *b; |
06edf0c0 | 12710 | |
06edf0c0 PA |
12711 | b = bs->breakpoint_at; |
12712 | ||
06edf0c0 PA |
12713 | switch (b->type) |
12714 | { | |
348d480f PA |
12715 | case bp_shlib_event: |
12716 | /* Did we stop because the user set the stop_on_solib_events | |
12717 | variable? (If so, we report this as a generic, "Stopped due | |
12718 | to shlib event" message.) */ | |
edcc5120 | 12719 | print_solib_event (0); |
348d480f PA |
12720 | break; |
12721 | ||
12722 | case bp_thread_event: | |
12723 | /* Not sure how we will get here. | |
12724 | GDB should not stop for these breakpoints. */ | |
12725 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12726 | break; |
12727 | ||
12728 | case bp_overlay_event: | |
12729 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12730 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12731 | break; |
12732 | ||
12733 | case bp_longjmp_master: | |
12734 | /* These should never be enabled. */ | |
12735 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12736 | break; |
12737 | ||
12738 | case bp_std_terminate_master: | |
12739 | /* These should never be enabled. */ | |
12740 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12741 | "gdb should not stop!\n")); | |
348d480f PA |
12742 | break; |
12743 | ||
12744 | case bp_exception_master: | |
12745 | /* These should never be enabled. */ | |
12746 | printf_filtered (_("Exception Master Breakpoint: " | |
12747 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12748 | break; |
12749 | } | |
12750 | ||
001c8c33 | 12751 | return PRINT_NOTHING; |
06edf0c0 PA |
12752 | } |
12753 | ||
12754 | static void | |
12755 | internal_bkpt_print_mention (struct breakpoint *b) | |
12756 | { | |
12757 | /* Nothing to mention. These breakpoints are internal. */ | |
12758 | } | |
12759 | ||
06edf0c0 PA |
12760 | /* Virtual table for momentary breakpoints */ |
12761 | ||
12762 | static void | |
12763 | momentary_bkpt_re_set (struct breakpoint *b) | |
12764 | { | |
12765 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12766 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12767 | Otherwise these should have been blown away via the cleanup chain |
12768 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12769 | } | |
12770 | ||
12771 | static void | |
12772 | momentary_bkpt_check_status (bpstat bs) | |
12773 | { | |
12774 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12775 | } | |
12776 | ||
12777 | static enum print_stop_action | |
12778 | momentary_bkpt_print_it (bpstat bs) | |
12779 | { | |
001c8c33 | 12780 | return PRINT_UNKNOWN; |
348d480f PA |
12781 | } |
12782 | ||
06edf0c0 PA |
12783 | static void |
12784 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12785 | { |
06edf0c0 | 12786 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12787 | } |
12788 | ||
e2e4d78b JK |
12789 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12790 | ||
12791 | It gets cleared already on the removal of the first one of such placed | |
12792 | breakpoints. This is OK as they get all removed altogether. */ | |
12793 | ||
c1fc2657 | 12794 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12795 | { |
c1fc2657 | 12796 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12797 | |
c1fc2657 | 12798 | if (tp != NULL) |
e2e4d78b | 12799 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12800 | } |
12801 | ||
55aa24fb SDJ |
12802 | /* Specific methods for probe breakpoints. */ |
12803 | ||
12804 | static int | |
12805 | bkpt_probe_insert_location (struct bp_location *bl) | |
12806 | { | |
12807 | int v = bkpt_insert_location (bl); | |
12808 | ||
12809 | if (v == 0) | |
12810 | { | |
12811 | /* The insertion was successful, now let's set the probe's semaphore | |
12812 | if needed. */ | |
935676c9 | 12813 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12814 | } |
12815 | ||
12816 | return v; | |
12817 | } | |
12818 | ||
12819 | static int | |
73971819 PA |
12820 | bkpt_probe_remove_location (struct bp_location *bl, |
12821 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12822 | { |
12823 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12824 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12825 | |
73971819 | 12826 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12827 | } |
12828 | ||
12829 | static void | |
626d2320 | 12830 | bkpt_probe_create_sals_from_location (struct event_location *location, |
5f700d83 | 12831 | struct linespec_result *canonical, |
f00aae0f | 12832 | enum bptype type_wanted) |
55aa24fb SDJ |
12833 | { |
12834 | struct linespec_sals lsal; | |
12835 | ||
c2f4122d | 12836 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12837 | lsal.canonical |
12838 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12839 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12840 | } |
12841 | ||
6c5b2ebe | 12842 | static std::vector<symtab_and_line> |
f00aae0f | 12843 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 12844 | struct event_location *location, |
6c5b2ebe | 12845 | struct program_space *search_pspace) |
55aa24fb | 12846 | { |
6c5b2ebe PA |
12847 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12848 | if (sals.empty ()) | |
55aa24fb | 12849 | error (_("probe not found")); |
6c5b2ebe | 12850 | return sals; |
55aa24fb SDJ |
12851 | } |
12852 | ||
348d480f | 12853 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12854 | |
348d480f PA |
12855 | static void |
12856 | tracepoint_re_set (struct breakpoint *b) | |
12857 | { | |
12858 | breakpoint_re_set_default (b); | |
12859 | } | |
876fa593 | 12860 | |
348d480f PA |
12861 | static int |
12862 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12863 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12864 | const struct target_waitstatus *ws) |
348d480f PA |
12865 | { |
12866 | /* By definition, the inferior does not report stops at | |
12867 | tracepoints. */ | |
12868 | return 0; | |
74960c60 VP |
12869 | } |
12870 | ||
12871 | static void | |
348d480f PA |
12872 | tracepoint_print_one_detail (const struct breakpoint *self, |
12873 | struct ui_out *uiout) | |
74960c60 | 12874 | { |
d9b3f62e | 12875 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12876 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12877 | { |
12878 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12879 | |
6a831f06 PA |
12880 | uiout->message ("\tmarker id is %pF\n", |
12881 | string_field ("static-tracepoint-marker-string-id", | |
12882 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12883 | } |
0d381245 VP |
12884 | } |
12885 | ||
a474d7c2 | 12886 | static void |
348d480f | 12887 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12888 | { |
112e8700 | 12889 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12890 | return; |
cc59ec59 | 12891 | |
348d480f PA |
12892 | switch (b->type) |
12893 | { | |
12894 | case bp_tracepoint: | |
12895 | printf_filtered (_("Tracepoint")); | |
12896 | printf_filtered (_(" %d"), b->number); | |
12897 | break; | |
12898 | case bp_fast_tracepoint: | |
12899 | printf_filtered (_("Fast tracepoint")); | |
12900 | printf_filtered (_(" %d"), b->number); | |
12901 | break; | |
12902 | case bp_static_tracepoint: | |
12903 | printf_filtered (_("Static tracepoint")); | |
12904 | printf_filtered (_(" %d"), b->number); | |
12905 | break; | |
12906 | default: | |
12907 | internal_error (__FILE__, __LINE__, | |
12908 | _("unhandled tracepoint type %d"), (int) b->type); | |
12909 | } | |
12910 | ||
12911 | say_where (b); | |
a474d7c2 PA |
12912 | } |
12913 | ||
348d480f | 12914 | static void |
d9b3f62e | 12915 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12916 | { |
d9b3f62e PA |
12917 | struct tracepoint *tp = (struct tracepoint *) self; |
12918 | ||
12919 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12920 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12921 | else if (self->type == bp_static_tracepoint) |
348d480f | 12922 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12923 | else if (self->type == bp_tracepoint) |
348d480f PA |
12924 | fprintf_unfiltered (fp, "trace"); |
12925 | else | |
12926 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12927 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12928 | |
f00aae0f | 12929 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12930 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12931 | print_recreate_thread (self, fp); |
12932 | ||
12933 | if (tp->pass_count) | |
12934 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12935 | } |
12936 | ||
983af33b | 12937 | static void |
626d2320 | 12938 | tracepoint_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12939 | struct linespec_result *canonical, |
12940 | enum bptype type_wanted) | |
983af33b | 12941 | { |
f00aae0f | 12942 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12943 | } |
12944 | ||
12945 | static void | |
12946 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12947 | struct linespec_result *canonical, | |
e1e01040 PA |
12948 | gdb::unique_xmalloc_ptr<char> cond_string, |
12949 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12950 | enum bptype type_wanted, |
12951 | enum bpdisp disposition, | |
12952 | int thread, | |
12953 | int task, int ignore_count, | |
12954 | const struct breakpoint_ops *ops, | |
12955 | int from_tty, int enabled, | |
44f238bb | 12956 | int internal, unsigned flags) |
983af33b | 12957 | { |
023fa29b | 12958 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12959 | std::move (cond_string), |
12960 | std::move (extra_string), | |
e7e0cddf | 12961 | type_wanted, |
983af33b SDJ |
12962 | disposition, thread, task, |
12963 | ignore_count, ops, from_tty, | |
44f238bb | 12964 | enabled, internal, flags); |
983af33b SDJ |
12965 | } |
12966 | ||
6c5b2ebe | 12967 | static std::vector<symtab_and_line> |
f00aae0f | 12968 | tracepoint_decode_location (struct breakpoint *b, |
626d2320 | 12969 | struct event_location *location, |
6c5b2ebe | 12970 | struct program_space *search_pspace) |
983af33b | 12971 | { |
6c5b2ebe | 12972 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12973 | } |
12974 | ||
2060206e | 12975 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12976 | |
bac7c5cf | 12977 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12978 | |
12979 | static void | |
f00aae0f | 12980 | tracepoint_probe_create_sals_from_location |
626d2320 | 12981 | (struct event_location *location, |
f00aae0f KS |
12982 | struct linespec_result *canonical, |
12983 | enum bptype type_wanted) | |
55aa24fb SDJ |
12984 | { |
12985 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12986 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12987 | } |
12988 | ||
6c5b2ebe | 12989 | static std::vector<symtab_and_line> |
f00aae0f | 12990 | tracepoint_probe_decode_location (struct breakpoint *b, |
626d2320 | 12991 | struct event_location *location, |
6c5b2ebe | 12992 | struct program_space *search_pspace) |
55aa24fb SDJ |
12993 | { |
12994 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12995 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12996 | } |
12997 | ||
5c2b4418 HZ |
12998 | /* Dprintf breakpoint_ops methods. */ |
12999 | ||
13000 | static void | |
13001 | dprintf_re_set (struct breakpoint *b) | |
13002 | { | |
13003 | breakpoint_re_set_default (b); | |
13004 | ||
f00aae0f KS |
13005 | /* extra_string should never be non-NULL for dprintf. */ |
13006 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13007 | |
13008 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13009 | 2 - create a dprintf, which resolves fine. | |
13010 | 3 - disconnect from target 1 | |
13011 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13012 | ||
13013 | After steps #3/#4, you'll want the dprintf command list to | |
13014 | be updated, because target 1 and 2 may well return different | |
13015 | answers for target_can_run_breakpoint_commands(). | |
13016 | Given absence of finer grained resetting, we get to do | |
13017 | it all the time. */ | |
13018 | if (b->extra_string != NULL) | |
13019 | update_dprintf_command_list (b); | |
13020 | } | |
13021 | ||
2d9442cc HZ |
13022 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13023 | ||
13024 | static void | |
13025 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13026 | { | |
f00aae0f | 13027 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13028 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13029 | tp->extra_string); |
13030 | print_recreate_thread (tp, fp); | |
13031 | } | |
13032 | ||
9d6e6e84 HZ |
13033 | /* Implement the "after_condition_true" breakpoint_ops method for |
13034 | dprintf. | |
13035 | ||
13036 | dprintf's are implemented with regular commands in their command | |
13037 | list, but we run the commands here instead of before presenting the | |
13038 | stop to the user, as dprintf's don't actually cause a stop. This | |
13039 | also makes it so that the commands of multiple dprintfs at the same | |
13040 | address are all handled. */ | |
13041 | ||
13042 | static void | |
13043 | dprintf_after_condition_true (struct bpstats *bs) | |
13044 | { | |
04afa70c | 13045 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13046 | struct bpstats *tmp_bs_p = &tmp_bs; |
13047 | ||
13048 | /* dprintf's never cause a stop. This wasn't set in the | |
13049 | check_status hook instead because that would make the dprintf's | |
13050 | condition not be evaluated. */ | |
13051 | bs->stop = 0; | |
13052 | ||
13053 | /* Run the command list here. Take ownership of it instead of | |
13054 | copying. We never want these commands to run later in | |
13055 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13056 | be set at same address as this dprintf, or even if running the | |
13057 | commands here throws. */ | |
13058 | tmp_bs.commands = bs->commands; | |
13059 | bs->commands = NULL; | |
9d6e6e84 HZ |
13060 | |
13061 | bpstat_do_actions_1 (&tmp_bs_p); | |
13062 | ||
13063 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13064 | bpstat_do_actions_1 may return early without processing the whole | |
13065 | list. */ | |
9d6e6e84 HZ |
13066 | } |
13067 | ||
983af33b SDJ |
13068 | /* The breakpoint_ops structure to be used on static tracepoints with |
13069 | markers (`-m'). */ | |
13070 | ||
13071 | static void | |
626d2320 | 13072 | strace_marker_create_sals_from_location (struct event_location *location, |
5f700d83 | 13073 | struct linespec_result *canonical, |
f00aae0f | 13074 | enum bptype type_wanted) |
983af33b SDJ |
13075 | { |
13076 | struct linespec_sals lsal; | |
f00aae0f | 13077 | const char *arg_start, *arg; |
983af33b | 13078 | |
a20714ff | 13079 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13080 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13081 | |
f2fc3015 TT |
13082 | std::string str (arg_start, arg - arg_start); |
13083 | const char *ptr = str.c_str (); | |
a20714ff PA |
13084 | canonical->location |
13085 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13086 | |
8e9e35b1 TT |
13087 | lsal.canonical |
13088 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13089 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13090 | } |
13091 | ||
13092 | static void | |
13093 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13094 | struct linespec_result *canonical, | |
e1e01040 PA |
13095 | gdb::unique_xmalloc_ptr<char> cond_string, |
13096 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13097 | enum bptype type_wanted, |
13098 | enum bpdisp disposition, | |
13099 | int thread, | |
13100 | int task, int ignore_count, | |
13101 | const struct breakpoint_ops *ops, | |
13102 | int from_tty, int enabled, | |
44f238bb | 13103 | int internal, unsigned flags) |
983af33b | 13104 | { |
6c5b2ebe | 13105 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13106 | |
13107 | /* If the user is creating a static tracepoint by marker id | |
13108 | (strace -m MARKER_ID), then store the sals index, so that | |
13109 | breakpoint_re_set can try to match up which of the newly | |
13110 | found markers corresponds to this one, and, don't try to | |
13111 | expand multiple locations for each sal, given than SALS | |
13112 | already should contain all sals for MARKER_ID. */ | |
13113 | ||
6c5b2ebe | 13114 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13115 | { |
6c5b2ebe PA |
13116 | event_location_up location |
13117 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13118 | |
b270e6f9 | 13119 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13120 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13121 | std::move (location), NULL, |
e1e01040 PA |
13122 | std::move (cond_string), |
13123 | std::move (extra_string), | |
e7e0cddf | 13124 | type_wanted, disposition, |
983af33b | 13125 | thread, task, ignore_count, ops, |
44f238bb | 13126 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13127 | canonical->special_display); |
13128 | /* Given that its possible to have multiple markers with | |
13129 | the same string id, if the user is creating a static | |
13130 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13131 | store the sals index, so that breakpoint_re_set can | |
13132 | try to match up which of the newly found markers | |
13133 | corresponds to this one */ | |
13134 | tp->static_trace_marker_id_idx = i; | |
13135 | ||
b270e6f9 | 13136 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13137 | } |
13138 | } | |
13139 | ||
6c5b2ebe | 13140 | static std::vector<symtab_and_line> |
f00aae0f | 13141 | strace_marker_decode_location (struct breakpoint *b, |
626d2320 | 13142 | struct event_location *location, |
6c5b2ebe | 13143 | struct program_space *search_pspace) |
983af33b SDJ |
13144 | { |
13145 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13146 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13147 | |
6c5b2ebe PA |
13148 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13149 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13150 | { |
6c5b2ebe PA |
13151 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13152 | sals.resize (1); | |
13153 | return sals; | |
983af33b SDJ |
13154 | } |
13155 | else | |
5d9310c4 | 13156 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13157 | } |
13158 | ||
13159 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13160 | ||
13161 | static int | |
13162 | strace_marker_p (struct breakpoint *b) | |
13163 | { | |
13164 | return b->ops == &strace_marker_breakpoint_ops; | |
13165 | } | |
13166 | ||
53a5351d | 13167 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13168 | structures. */ |
c906108c SS |
13169 | |
13170 | void | |
fba45db2 | 13171 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13172 | { |
8a3fe4f8 | 13173 | gdb_assert (bpt != NULL); |
c906108c | 13174 | |
4a64f543 MS |
13175 | /* Has this bp already been deleted? This can happen because |
13176 | multiple lists can hold pointers to bp's. bpstat lists are | |
13177 | especial culprits. | |
13178 | ||
13179 | One example of this happening is a watchpoint's scope bp. When | |
13180 | the scope bp triggers, we notice that the watchpoint is out of | |
13181 | scope, and delete it. We also delete its scope bp. But the | |
13182 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13183 | That bpstat is then checked for auto-deleting bp's, which are | |
13184 | deleted. | |
13185 | ||
13186 | A real solution to this problem might involve reference counts in | |
13187 | bp's, and/or giving them pointers back to their referencing | |
13188 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13189 | storage when no more references were extent. A cheaper bandaid | |
13190 | was chosen. */ | |
c906108c SS |
13191 | if (bpt->type == bp_none) |
13192 | return; | |
13193 | ||
4a64f543 MS |
13194 | /* At least avoid this stale reference until the reference counting |
13195 | of breakpoints gets resolved. */ | |
d0fb5eae | 13196 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13197 | { |
d0fb5eae | 13198 | struct breakpoint *related; |
3a5c3e22 | 13199 | struct watchpoint *w; |
d0fb5eae JK |
13200 | |
13201 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13202 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13203 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13204 | w = (struct watchpoint *) bpt; |
13205 | else | |
13206 | w = NULL; | |
13207 | if (w != NULL) | |
13208 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13209 | |
13210 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13211 | for (related = bpt; related->related_breakpoint != bpt; | |
13212 | related = related->related_breakpoint); | |
13213 | related->related_breakpoint = bpt->related_breakpoint; | |
13214 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13215 | } |
13216 | ||
a9634178 TJB |
13217 | /* watch_command_1 creates a watchpoint but only sets its number if |
13218 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13219 | a problem in that process, we'll be asked to delete the half-created | |
13220 | watchpoint. In that case, don't announce the deletion. */ | |
13221 | if (bpt->number) | |
76727919 | 13222 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13223 | |
c906108c SS |
13224 | if (breakpoint_chain == bpt) |
13225 | breakpoint_chain = bpt->next; | |
13226 | ||
43892fdf | 13227 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13228 | if (b->next == bpt) |
01add95b SM |
13229 | { |
13230 | b->next = bpt->next; | |
13231 | break; | |
13232 | } | |
c906108c | 13233 | |
f431efe5 PA |
13234 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13235 | been freed. */ | |
13236 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13237 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13238 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13239 | commands are associated with the bpstat; if we remove it here, | |
13240 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13241 | event-top.c won't do anything, and temporary breakpoints with | |
13242 | commands won't work. */ | |
13243 | ||
13244 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13245 | ||
4a64f543 MS |
13246 | /* Now that breakpoint is removed from breakpoint list, update the |
13247 | global location list. This will remove locations that used to | |
13248 | belong to this breakpoint. Do this before freeing the breakpoint | |
13249 | itself, since remove_breakpoint looks at location's owner. It | |
13250 | might be better design to have location completely | |
13251 | self-contained, but it's not the case now. */ | |
44702360 | 13252 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13253 | |
4a64f543 MS |
13254 | /* On the chance that someone will soon try again to delete this |
13255 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13256 | bpt->type = bp_none; |
4d01a485 | 13257 | delete bpt; |
c906108c SS |
13258 | } |
13259 | ||
51be5b68 PA |
13260 | /* Iterator function to call a user-provided callback function once |
13261 | for each of B and its related breakpoints. */ | |
13262 | ||
13263 | static void | |
13264 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13265 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13266 | { |
13267 | struct breakpoint *related; | |
13268 | ||
13269 | related = b; | |
13270 | do | |
13271 | { | |
13272 | struct breakpoint *next; | |
13273 | ||
13274 | /* FUNCTION may delete RELATED. */ | |
13275 | next = related->related_breakpoint; | |
13276 | ||
13277 | if (next == related) | |
13278 | { | |
13279 | /* RELATED is the last ring entry. */ | |
48649e1b | 13280 | function (related); |
51be5b68 PA |
13281 | |
13282 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13283 | B. There's nothing left to do anyway, so just break | |
13284 | out. */ | |
13285 | break; | |
13286 | } | |
13287 | else | |
48649e1b | 13288 | function (related); |
51be5b68 PA |
13289 | |
13290 | related = next; | |
13291 | } | |
13292 | while (related != b); | |
13293 | } | |
95a42b64 | 13294 | |
4495129a | 13295 | static void |
981a3fb3 | 13296 | delete_command (const char *arg, int from_tty) |
c906108c | 13297 | { |
ea9365bb TT |
13298 | dont_repeat (); |
13299 | ||
c906108c SS |
13300 | if (arg == 0) |
13301 | { | |
13302 | int breaks_to_delete = 0; | |
13303 | ||
46c6471b | 13304 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
13305 | internal breakpoints, these have to be deleted with an |
13306 | explicit breakpoint number argument. */ | |
43892fdf | 13307 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 13308 | if (user_breakpoint_p (b)) |
973d738b DJ |
13309 | { |
13310 | breaks_to_delete = 1; | |
13311 | break; | |
13312 | } | |
c906108c SS |
13313 | |
13314 | /* Ask user only if there are some breakpoints to delete. */ | |
13315 | if (!from_tty | |
e2e0b3e5 | 13316 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
13317 | for (breakpoint *b : all_breakpoints_safe ()) |
13318 | if (user_breakpoint_p (b)) | |
13319 | delete_breakpoint (b); | |
c906108c SS |
13320 | } |
13321 | else | |
48649e1b | 13322 | map_breakpoint_numbers |
b926417a | 13323 | (arg, [&] (breakpoint *br) |
48649e1b | 13324 | { |
b926417a | 13325 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13326 | }); |
c906108c SS |
13327 | } |
13328 | ||
c2f4122d PA |
13329 | /* Return true if all locations of B bound to PSPACE are pending. If |
13330 | PSPACE is NULL, all locations of all program spaces are | |
13331 | considered. */ | |
13332 | ||
0d381245 | 13333 | static int |
c2f4122d | 13334 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13335 | { |
40cb8ca5 | 13336 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
13337 | if ((pspace == NULL |
13338 | || loc->pspace == pspace) | |
13339 | && !loc->shlib_disabled | |
8645ff69 | 13340 | && !loc->pspace->executing_startup) |
0d381245 VP |
13341 | return 0; |
13342 | return 1; | |
fe3f5fa8 VP |
13343 | } |
13344 | ||
776592bf DE |
13345 | /* Subroutine of update_breakpoint_locations to simplify it. |
13346 | Return non-zero if multiple fns in list LOC have the same name. | |
13347 | Null names are ignored. */ | |
13348 | ||
13349 | static int | |
13350 | ambiguous_names_p (struct bp_location *loc) | |
13351 | { | |
13352 | struct bp_location *l; | |
2698f5ea | 13353 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 13354 | xcalloc, xfree)); |
776592bf DE |
13355 | |
13356 | for (l = loc; l != NULL; l = l->next) | |
13357 | { | |
13358 | const char **slot; | |
13359 | const char *name = l->function_name; | |
13360 | ||
13361 | /* Allow for some names to be NULL, ignore them. */ | |
13362 | if (name == NULL) | |
13363 | continue; | |
13364 | ||
c1fb9836 | 13365 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 13366 | INSERT); |
4a64f543 MS |
13367 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13368 | returns NULL. */ | |
776592bf | 13369 | if (*slot != NULL) |
c1fb9836 | 13370 | return 1; |
776592bf DE |
13371 | *slot = name; |
13372 | } | |
13373 | ||
776592bf DE |
13374 | return 0; |
13375 | } | |
13376 | ||
0fb4aa4b PA |
13377 | /* When symbols change, it probably means the sources changed as well, |
13378 | and it might mean the static tracepoint markers are no longer at | |
13379 | the same address or line numbers they used to be at last we | |
13380 | checked. Losing your static tracepoints whenever you rebuild is | |
13381 | undesirable. This function tries to resync/rematch gdb static | |
13382 | tracepoints with the markers on the target, for static tracepoints | |
13383 | that have not been set by marker id. Static tracepoint that have | |
13384 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13385 | The heuristic is: | |
13386 | ||
13387 | 1) For a tracepoint set at a specific address, look for a marker at | |
13388 | the old PC. If one is found there, assume to be the same marker. | |
13389 | If the name / string id of the marker found is different from the | |
13390 | previous known name, assume that means the user renamed the marker | |
13391 | in the sources, and output a warning. | |
13392 | ||
13393 | 2) For a tracepoint set at a given line number, look for a marker | |
13394 | at the new address of the old line number. If one is found there, | |
13395 | assume to be the same marker. If the name / string id of the | |
13396 | marker found is different from the previous known name, assume that | |
13397 | means the user renamed the marker in the sources, and output a | |
13398 | warning. | |
13399 | ||
13400 | 3) If a marker is no longer found at the same address or line, it | |
13401 | may mean the marker no longer exists. But it may also just mean | |
13402 | the code changed a bit. Maybe the user added a few lines of code | |
13403 | that made the marker move up or down (in line number terms). Ask | |
13404 | the target for info about the marker with the string id as we knew | |
13405 | it. If found, update line number and address in the matching | |
13406 | static tracepoint. This will get confused if there's more than one | |
13407 | marker with the same ID (possible in UST, although unadvised | |
13408 | precisely because it confuses tools). */ | |
13409 | ||
13410 | static struct symtab_and_line | |
13411 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13412 | { | |
d9b3f62e | 13413 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13414 | struct static_tracepoint_marker marker; |
13415 | CORE_ADDR pc; | |
0fb4aa4b PA |
13416 | |
13417 | pc = sal.pc; | |
13418 | if (sal.line) | |
13419 | find_line_pc (sal.symtab, sal.line, &pc); | |
13420 | ||
13421 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13422 | { | |
5d9310c4 | 13423 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13424 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13425 | b->number, tp->static_trace_marker_id.c_str (), |
13426 | marker.str_id.c_str ()); | |
0fb4aa4b | 13427 | |
5d9310c4 | 13428 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13429 | |
13430 | return sal; | |
13431 | } | |
13432 | ||
13433 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13434 | by string ID. */ | |
13435 | if (!sal.explicit_pc | |
13436 | && sal.line != 0 | |
13437 | && sal.symtab != NULL | |
5d9310c4 | 13438 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13439 | { |
5d9310c4 SM |
13440 | std::vector<static_tracepoint_marker> markers |
13441 | = target_static_tracepoint_markers_by_strid | |
13442 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13443 | |
5d9310c4 | 13444 | if (!markers.empty ()) |
0fb4aa4b | 13445 | { |
0fb4aa4b | 13446 | struct symbol *sym; |
80e1d417 | 13447 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13448 | struct ui_out *uiout = current_uiout; |
67994074 | 13449 | struct explicit_location explicit_loc; |
0fb4aa4b | 13450 | |
5d9310c4 | 13451 | tpmarker = &markers[0]; |
0fb4aa4b | 13452 | |
5d9310c4 | 13453 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13454 | |
13455 | warning (_("marker for static tracepoint %d (%s) not " | |
13456 | "found at previous line number"), | |
5d9310c4 | 13457 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13458 | |
51abb421 | 13459 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13460 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13461 | uiout->text ("Now in "); |
0fb4aa4b PA |
13462 | if (sym) |
13463 | { | |
987012b8 | 13464 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13465 | function_name_style.style ()); |
112e8700 | 13466 | uiout->text (" at "); |
0fb4aa4b | 13467 | } |
112e8700 | 13468 | uiout->field_string ("file", |
cbe56571 | 13469 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13470 | file_name_style.style ()); |
112e8700 | 13471 | uiout->text (":"); |
0fb4aa4b | 13472 | |
112e8700 | 13473 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13474 | { |
0b0865da | 13475 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13476 | |
112e8700 | 13477 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13478 | } |
13479 | ||
381befee | 13480 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13481 | uiout->text ("\n"); |
0fb4aa4b | 13482 | |
80e1d417 | 13483 | b->loc->line_number = sal2.line; |
2f202fde | 13484 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13485 | |
d28cd78a | 13486 | b->location.reset (NULL); |
67994074 KS |
13487 | initialize_explicit_location (&explicit_loc); |
13488 | explicit_loc.source_filename | |
00e52e53 | 13489 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13490 | explicit_loc.line_offset.offset = b->loc->line_number; |
13491 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13492 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13493 | |
13494 | /* Might be nice to check if function changed, and warn if | |
13495 | so. */ | |
0fb4aa4b PA |
13496 | } |
13497 | } | |
13498 | return sal; | |
13499 | } | |
13500 | ||
8d3788bd VP |
13501 | /* Returns 1 iff locations A and B are sufficiently same that |
13502 | we don't need to report breakpoint as changed. */ | |
13503 | ||
13504 | static int | |
13505 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13506 | { | |
13507 | while (a && b) | |
13508 | { | |
13509 | if (a->address != b->address) | |
13510 | return 0; | |
13511 | ||
13512 | if (a->shlib_disabled != b->shlib_disabled) | |
13513 | return 0; | |
13514 | ||
13515 | if (a->enabled != b->enabled) | |
13516 | return 0; | |
13517 | ||
b5fa468f TBA |
13518 | if (a->disabled_by_cond != b->disabled_by_cond) |
13519 | return 0; | |
13520 | ||
8d3788bd VP |
13521 | a = a->next; |
13522 | b = b->next; | |
13523 | } | |
13524 | ||
13525 | if ((a == NULL) != (b == NULL)) | |
13526 | return 0; | |
13527 | ||
13528 | return 1; | |
13529 | } | |
13530 | ||
c2f4122d PA |
13531 | /* Split all locations of B that are bound to PSPACE out of B's |
13532 | location list to a separate list and return that list's head. If | |
13533 | PSPACE is NULL, hoist out all locations of B. */ | |
13534 | ||
13535 | static struct bp_location * | |
13536 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13537 | { | |
13538 | struct bp_location head; | |
13539 | struct bp_location *i = b->loc; | |
13540 | struct bp_location **i_link = &b->loc; | |
13541 | struct bp_location *hoisted = &head; | |
13542 | ||
13543 | if (pspace == NULL) | |
13544 | { | |
13545 | i = b->loc; | |
13546 | b->loc = NULL; | |
13547 | return i; | |
13548 | } | |
13549 | ||
13550 | head.next = NULL; | |
13551 | ||
13552 | while (i != NULL) | |
13553 | { | |
13554 | if (i->pspace == pspace) | |
13555 | { | |
13556 | *i_link = i->next; | |
13557 | i->next = NULL; | |
13558 | hoisted->next = i; | |
13559 | hoisted = i; | |
13560 | } | |
13561 | else | |
13562 | i_link = &i->next; | |
13563 | i = *i_link; | |
13564 | } | |
13565 | ||
13566 | return head.next; | |
13567 | } | |
13568 | ||
13569 | /* Create new breakpoint locations for B (a hardware or software | |
13570 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13571 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13572 | FILTER_PSPACE. Locations of other program spaces are left | |
13573 | untouched. */ | |
f1310107 | 13574 | |
0e30163f | 13575 | void |
0d381245 | 13576 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13577 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13578 | gdb::array_view<const symtab_and_line> sals, |
13579 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13580 | { |
c2f4122d | 13581 | struct bp_location *existing_locations; |
0d381245 | 13582 | |
6c5b2ebe | 13583 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13584 | { |
13585 | /* Ranged breakpoints have only one start location and one end | |
13586 | location. */ | |
13587 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13588 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13589 | "multiple locations found\n"), | |
13590 | b->number); | |
13591 | return; | |
13592 | } | |
f1310107 | 13593 | |
4a64f543 MS |
13594 | /* If there's no new locations, and all existing locations are |
13595 | pending, don't do anything. This optimizes the common case where | |
13596 | all locations are in the same shared library, that was unloaded. | |
13597 | We'd like to retain the location, so that when the library is | |
13598 | loaded again, we don't loose the enabled/disabled status of the | |
13599 | individual locations. */ | |
6c5b2ebe | 13600 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13601 | return; |
13602 | ||
c2f4122d | 13603 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13604 | |
6c5b2ebe | 13605 | for (const auto &sal : sals) |
fe3f5fa8 | 13606 | { |
f8eba3c6 TT |
13607 | struct bp_location *new_loc; |
13608 | ||
6c5b2ebe | 13609 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13610 | |
6c5b2ebe | 13611 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13612 | |
0d381245 VP |
13613 | /* Reparse conditions, they might contain references to the |
13614 | old symtab. */ | |
13615 | if (b->cond_string != NULL) | |
13616 | { | |
bbc13ae3 | 13617 | const char *s; |
fe3f5fa8 | 13618 | |
0d381245 | 13619 | s = b->cond_string; |
a70b8144 | 13620 | try |
0d381245 | 13621 | { |
6c5b2ebe PA |
13622 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13623 | block_for_pc (sal.pc), | |
0d381245 VP |
13624 | 0); |
13625 | } | |
230d2906 | 13626 | catch (const gdb_exception_error &e) |
0d381245 | 13627 | { |
b5fa468f | 13628 | new_loc->disabled_by_cond = true; |
0d381245 VP |
13629 | } |
13630 | } | |
fe3f5fa8 | 13631 | |
6c5b2ebe | 13632 | if (!sals_end.empty ()) |
f1310107 | 13633 | { |
6c5b2ebe | 13634 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13635 | |
6c5b2ebe | 13636 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13637 | } |
0d381245 | 13638 | } |
fe3f5fa8 | 13639 | |
4a64f543 MS |
13640 | /* If possible, carry over 'disable' status from existing |
13641 | breakpoints. */ | |
0d381245 VP |
13642 | { |
13643 | struct bp_location *e = existing_locations; | |
776592bf DE |
13644 | /* If there are multiple breakpoints with the same function name, |
13645 | e.g. for inline functions, comparing function names won't work. | |
13646 | Instead compare pc addresses; this is just a heuristic as things | |
13647 | may have moved, but in practice it gives the correct answer | |
13648 | often enough until a better solution is found. */ | |
13649 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13650 | ||
0d381245 VP |
13651 | for (; e; e = e->next) |
13652 | { | |
b5fa468f | 13653 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 13654 | { |
776592bf DE |
13655 | if (have_ambiguous_names) |
13656 | { | |
40cb8ca5 | 13657 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
13658 | { |
13659 | /* Ignore software vs hardware location type at | |
13660 | this point, because with "set breakpoint | |
13661 | auto-hw", after a re-set, locations that were | |
13662 | hardware can end up as software, or vice versa. | |
13663 | As mentioned above, this is an heuristic and in | |
13664 | practice should give the correct answer often | |
13665 | enough. */ | |
13666 | if (breakpoint_locations_match (e, l, true)) | |
13667 | { | |
b5fa468f TBA |
13668 | l->enabled = e->enabled; |
13669 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
13670 | break; |
13671 | } | |
13672 | } | |
776592bf DE |
13673 | } |
13674 | else | |
13675 | { | |
40cb8ca5 | 13676 | for (bp_location *l : b->locations ()) |
776592bf DE |
13677 | if (l->function_name |
13678 | && strcmp (e->function_name, l->function_name) == 0) | |
13679 | { | |
b5fa468f TBA |
13680 | l->enabled = e->enabled; |
13681 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
13682 | break; |
13683 | } | |
13684 | } | |
0d381245 VP |
13685 | } |
13686 | } | |
13687 | } | |
fe3f5fa8 | 13688 | |
8d3788bd | 13689 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13690 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13691 | } |
13692 | ||
f00aae0f | 13693 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13694 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13695 | ||
6c5b2ebe | 13696 | static std::vector<symtab_and_line> |
f00aae0f | 13697 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13698 | struct program_space *search_pspace, int *found) |
ef23e705 | 13699 | { |
cc06b668 | 13700 | struct gdb_exception exception; |
ef23e705 | 13701 | |
983af33b | 13702 | gdb_assert (b->ops != NULL); |
ef23e705 | 13703 | |
6c5b2ebe PA |
13704 | std::vector<symtab_and_line> sals; |
13705 | ||
a70b8144 | 13706 | try |
ef23e705 | 13707 | { |
6c5b2ebe | 13708 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13709 | } |
94aeb44b | 13710 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13711 | { |
13712 | int not_found_and_ok = 0; | |
492d29ea | 13713 | |
ef23e705 TJB |
13714 | /* For pending breakpoints, it's expected that parsing will |
13715 | fail until the right shared library is loaded. User has | |
13716 | already told to create pending breakpoints and don't need | |
13717 | extra messages. If breakpoint is in bp_shlib_disabled | |
13718 | state, then user already saw the message about that | |
13719 | breakpoint being disabled, and don't want to see more | |
13720 | errors. */ | |
58438ac1 | 13721 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13722 | && (b->condition_not_parsed |
13723 | || (b->loc != NULL | |
13724 | && search_pspace != NULL | |
13725 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13726 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13727 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13728 | || b->enable_state == bp_disabled)) |
13729 | not_found_and_ok = 1; | |
13730 | ||
13731 | if (!not_found_and_ok) | |
13732 | { | |
13733 | /* We surely don't want to warn about the same breakpoint | |
13734 | 10 times. One solution, implemented here, is disable | |
13735 | the breakpoint on error. Another solution would be to | |
13736 | have separate 'warning emitted' flag. Since this | |
13737 | happens only when a binary has changed, I don't know | |
13738 | which approach is better. */ | |
13739 | b->enable_state = bp_disabled; | |
eedc3f4f | 13740 | throw; |
ef23e705 | 13741 | } |
94aeb44b TT |
13742 | |
13743 | exception = std::move (e); | |
ef23e705 TJB |
13744 | } |
13745 | ||
492d29ea | 13746 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13747 | { |
6c5b2ebe PA |
13748 | for (auto &sal : sals) |
13749 | resolve_sal_pc (&sal); | |
f00aae0f | 13750 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13751 | { |
ed1d1739 KS |
13752 | char *cond_string, *extra_string; |
13753 | int thread, task; | |
ef23e705 | 13754 | |
b5fa468f TBA |
13755 | find_condition_and_thread_for_sals (sals, b->extra_string, |
13756 | &cond_string, &thread, | |
13757 | &task, &extra_string); | |
f00aae0f | 13758 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13759 | if (cond_string) |
13760 | b->cond_string = cond_string; | |
13761 | b->thread = thread; | |
13762 | b->task = task; | |
e7e0cddf | 13763 | if (extra_string) |
f00aae0f KS |
13764 | { |
13765 | xfree (b->extra_string); | |
13766 | b->extra_string = extra_string; | |
13767 | } | |
ef23e705 TJB |
13768 | b->condition_not_parsed = 0; |
13769 | } | |
13770 | ||
983af33b | 13771 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13772 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13773 | |
58438ac1 TT |
13774 | *found = 1; |
13775 | } | |
13776 | else | |
13777 | *found = 0; | |
ef23e705 TJB |
13778 | |
13779 | return sals; | |
13780 | } | |
13781 | ||
348d480f PA |
13782 | /* The default re_set method, for typical hardware or software |
13783 | breakpoints. Reevaluate the breakpoint and recreate its | |
13784 | locations. */ | |
13785 | ||
13786 | static void | |
28010a5d | 13787 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13788 | { |
c2f4122d | 13789 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13790 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13791 | |
6c5b2ebe PA |
13792 | int found; |
13793 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13794 | filter_pspace, &found); | |
ef23e705 | 13795 | if (found) |
6c5b2ebe | 13796 | expanded = std::move (sals); |
ef23e705 | 13797 | |
f00aae0f | 13798 | if (b->location_range_end != NULL) |
f1310107 | 13799 | { |
6c5b2ebe PA |
13800 | std::vector<symtab_and_line> sals_end |
13801 | = location_to_sals (b, b->location_range_end.get (), | |
13802 | filter_pspace, &found); | |
f1310107 | 13803 | if (found) |
6c5b2ebe | 13804 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13805 | } |
13806 | ||
c2f4122d | 13807 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13808 | } |
13809 | ||
983af33b SDJ |
13810 | /* Default method for creating SALs from an address string. It basically |
13811 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13812 | ||
13813 | static void | |
626d2320 | 13814 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
13815 | struct linespec_result *canonical, |
13816 | enum bptype type_wanted) | |
983af33b | 13817 | { |
f00aae0f | 13818 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13819 | } |
13820 | ||
13821 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13822 | function for the `create_breakpoints_sal' method of | |
13823 | breakpoint_ops. */ | |
13824 | ||
13825 | static void | |
13826 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13827 | struct linespec_result *canonical, | |
e1e01040 PA |
13828 | gdb::unique_xmalloc_ptr<char> cond_string, |
13829 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13830 | enum bptype type_wanted, |
13831 | enum bpdisp disposition, | |
13832 | int thread, | |
13833 | int task, int ignore_count, | |
13834 | const struct breakpoint_ops *ops, | |
13835 | int from_tty, int enabled, | |
44f238bb | 13836 | int internal, unsigned flags) |
983af33b | 13837 | { |
e1e01040 PA |
13838 | create_breakpoints_sal (gdbarch, canonical, |
13839 | std::move (cond_string), | |
13840 | std::move (extra_string), | |
983af33b SDJ |
13841 | type_wanted, disposition, |
13842 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13843 | enabled, internal, flags); |
983af33b SDJ |
13844 | } |
13845 | ||
13846 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13847 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13848 | |
6c5b2ebe | 13849 | static std::vector<symtab_and_line> |
f00aae0f | 13850 | decode_location_default (struct breakpoint *b, |
626d2320 | 13851 | struct event_location *location, |
6c5b2ebe | 13852 | struct program_space *search_pspace) |
983af33b SDJ |
13853 | { |
13854 | struct linespec_result canonical; | |
13855 | ||
c2f4122d | 13856 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13857 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13858 | b->filter.get ()); |
983af33b SDJ |
13859 | |
13860 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13861 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13862 | |
6c5b2ebe | 13863 | if (!canonical.lsals.empty ()) |
983af33b | 13864 | { |
6c5b2ebe PA |
13865 | const linespec_sals &lsal = canonical.lsals[0]; |
13866 | return std::move (lsal.sals); | |
983af33b | 13867 | } |
6c5b2ebe | 13868 | return {}; |
983af33b SDJ |
13869 | } |
13870 | ||
bf469271 | 13871 | /* Reset a breakpoint. */ |
c906108c | 13872 | |
bf469271 PA |
13873 | static void |
13874 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13875 | { |
fdf44873 TT |
13876 | input_radix = b->input_radix; |
13877 | set_language (b->language); | |
c906108c | 13878 | |
348d480f | 13879 | b->ops->re_set (b); |
c906108c SS |
13880 | } |
13881 | ||
c2f4122d PA |
13882 | /* Re-set breakpoint locations for the current program space. |
13883 | Locations bound to other program spaces are left untouched. */ | |
13884 | ||
c906108c | 13885 | void |
69de3c6a | 13886 | breakpoint_re_set (void) |
c906108c | 13887 | { |
c5aa993b | 13888 | { |
fdf44873 TT |
13889 | scoped_restore_current_language save_language; |
13890 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13891 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13892 | |
8e817061 JB |
13893 | /* breakpoint_re_set_one sets the current_language to the language |
13894 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13895 | before re-evaluating the breakpoint's location. This change can | |
13896 | unfortunately get undone by accident if the language_mode is set | |
13897 | to auto, and we either switch frames, or more likely in this context, | |
13898 | we select the current frame. | |
13899 | ||
13900 | We prevent this by temporarily turning the language_mode to | |
13901 | language_mode_manual. We restore it once all breakpoints | |
13902 | have been reset. */ | |
13903 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13904 | language_mode = language_mode_manual; | |
13905 | ||
5ed8105e PA |
13906 | /* Note: we must not try to insert locations until after all |
13907 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13908 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13909 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13910 | |
1428b37a | 13911 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 13912 | { |
a70b8144 | 13913 | try |
bf469271 PA |
13914 | { |
13915 | breakpoint_re_set_one (b); | |
13916 | } | |
230d2906 | 13917 | catch (const gdb_exception &ex) |
bf469271 PA |
13918 | { |
13919 | exception_fprintf (gdb_stderr, ex, | |
13920 | "Error in re-setting breakpoint %d: ", | |
13921 | b->number); | |
13922 | } | |
5ed8105e | 13923 | } |
5ed8105e PA |
13924 | |
13925 | jit_breakpoint_re_set (); | |
13926 | } | |
6c95b8df | 13927 | |
af02033e PP |
13928 | create_overlay_event_breakpoint (); |
13929 | create_longjmp_master_breakpoint (); | |
13930 | create_std_terminate_master_breakpoint (); | |
186c406b | 13931 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13932 | |
13933 | /* Now we can insert. */ | |
13934 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13935 | } |
13936 | \f | |
c906108c SS |
13937 | /* Reset the thread number of this breakpoint: |
13938 | ||
13939 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13940 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13941 | void |
fba45db2 | 13942 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13943 | { |
13944 | if (b->thread != -1) | |
13945 | { | |
00431a78 | 13946 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13947 | |
13948 | /* We're being called after following a fork. The new fork is | |
13949 | selected as current, and unless this was a vfork will have a | |
13950 | different program space from the original thread. Reset that | |
13951 | as well. */ | |
13952 | b->loc->pspace = current_program_space; | |
c906108c SS |
13953 | } |
13954 | } | |
13955 | ||
03ac34d5 MS |
13956 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13957 | If from_tty is nonzero, it prints a message to that effect, | |
13958 | which ends with a period (no newline). */ | |
13959 | ||
c906108c | 13960 | void |
fba45db2 | 13961 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13962 | { |
c906108c SS |
13963 | if (count < 0) |
13964 | count = 0; | |
13965 | ||
43892fdf | 13966 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13967 | if (b->number == bptnum) |
01add95b SM |
13968 | { |
13969 | if (is_tracepoint (b)) | |
13970 | { | |
13971 | if (from_tty && count != 0) | |
13972 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13973 | bptnum); | |
13974 | return; | |
13975 | } | |
13976 | ||
13977 | b->ignore_count = count; | |
13978 | if (from_tty) | |
13979 | { | |
13980 | if (count == 0) | |
13981 | printf_filtered (_("Will stop next time " | |
13982 | "breakpoint %d is reached."), | |
13983 | bptnum); | |
13984 | else if (count == 1) | |
13985 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), | |
13986 | bptnum); | |
13987 | else | |
13988 | printf_filtered (_("Will ignore next %d " | |
13989 | "crossings of breakpoint %d."), | |
13990 | count, bptnum); | |
13991 | } | |
13992 | gdb::observers::breakpoint_modified.notify (b); | |
13993 | return; | |
13994 | } | |
c906108c | 13995 | |
8a3fe4f8 | 13996 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13997 | } |
13998 | ||
c906108c SS |
13999 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14000 | ||
14001 | static void | |
0b39b52e | 14002 | ignore_command (const char *args, int from_tty) |
c906108c | 14003 | { |
0b39b52e | 14004 | const char *p = args; |
52f0bd74 | 14005 | int num; |
c906108c SS |
14006 | |
14007 | if (p == 0) | |
e2e0b3e5 | 14008 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14009 | |
c906108c | 14010 | num = get_number (&p); |
5c44784c | 14011 | if (num == 0) |
8a3fe4f8 | 14012 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14013 | if (*p == 0) |
8a3fe4f8 | 14014 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14015 | |
14016 | set_ignore_count (num, | |
14017 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14018 | from_tty); | |
221ea385 KS |
14019 | if (from_tty) |
14020 | printf_filtered ("\n"); | |
c906108c SS |
14021 | } |
14022 | \f | |
d0fe4701 XR |
14023 | |
14024 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14025 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14026 | |
14027 | static void | |
d0fe4701 XR |
14028 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14029 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14030 | { |
d0fe4701 XR |
14031 | if (bp_num_range.first == 0) |
14032 | { | |
14033 | warning (_("bad breakpoint number at or near '%d'"), | |
14034 | bp_num_range.first); | |
14035 | } | |
14036 | else | |
c906108c | 14037 | { |
d0fe4701 | 14038 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14039 | { |
d0fe4701 XR |
14040 | bool match = false; |
14041 | ||
1428b37a | 14042 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 14043 | if (b->number == i) |
5c44784c | 14044 | { |
bfd28288 | 14045 | match = true; |
48649e1b | 14046 | function (b); |
11cf8741 | 14047 | break; |
5c44784c | 14048 | } |
bfd28288 | 14049 | if (!match) |
d0fe4701 | 14050 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14051 | } |
c906108c SS |
14052 | } |
14053 | } | |
14054 | ||
d0fe4701 XR |
14055 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14056 | ARGS. */ | |
14057 | ||
14058 | static void | |
14059 | map_breakpoint_numbers (const char *args, | |
14060 | gdb::function_view<void (breakpoint *)> function) | |
14061 | { | |
14062 | if (args == NULL || *args == '\0') | |
14063 | error_no_arg (_("one or more breakpoint numbers")); | |
14064 | ||
14065 | number_or_range_parser parser (args); | |
14066 | ||
14067 | while (!parser.finished ()) | |
14068 | { | |
14069 | int num = parser.get_number (); | |
14070 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14071 | } | |
14072 | } | |
14073 | ||
14074 | /* Return the breakpoint location structure corresponding to the | |
14075 | BP_NUM and LOC_NUM values. */ | |
14076 | ||
0d381245 | 14077 | static struct bp_location * |
d0fe4701 | 14078 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14079 | { |
43892fdf | 14080 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
14081 | |
14082 | if (!b || b->number != bp_num) | |
d0fe4701 | 14083 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14084 | |
0d381245 | 14085 | if (loc_num == 0) |
d0fe4701 | 14086 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14087 | |
d0fe4701 | 14088 | int n = 0; |
40cb8ca5 | 14089 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
14090 | if (++n == loc_num) |
14091 | return loc; | |
14092 | ||
14093 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14094 | } |
14095 | ||
95e95a6d PA |
14096 | /* Modes of operation for extract_bp_num. */ |
14097 | enum class extract_bp_kind | |
14098 | { | |
14099 | /* Extracting a breakpoint number. */ | |
14100 | bp, | |
14101 | ||
14102 | /* Extracting a location number. */ | |
14103 | loc, | |
14104 | }; | |
14105 | ||
14106 | /* Extract a breakpoint or location number (as determined by KIND) | |
14107 | from the string starting at START. TRAILER is a character which | |
14108 | can be found after the number. If you don't want a trailer, use | |
14109 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14110 | string. This always returns a positive integer. */ | |
14111 | ||
14112 | static int | |
14113 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14114 | int trailer, const char **end_out = NULL) | |
14115 | { | |
14116 | const char *end = start; | |
14117 | int num = get_number_trailer (&end, trailer); | |
14118 | if (num < 0) | |
14119 | error (kind == extract_bp_kind::bp | |
14120 | ? _("Negative breakpoint number '%.*s'") | |
14121 | : _("Negative breakpoint location number '%.*s'"), | |
14122 | int (end - start), start); | |
14123 | if (num == 0) | |
14124 | error (kind == extract_bp_kind::bp | |
14125 | ? _("Bad breakpoint number '%.*s'") | |
14126 | : _("Bad breakpoint location number '%.*s'"), | |
14127 | int (end - start), start); | |
14128 | ||
14129 | if (end_out != NULL) | |
14130 | *end_out = end; | |
14131 | return num; | |
14132 | } | |
14133 | ||
14134 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14135 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14136 | representing the (inclusive) range. The returned pair's elements | |
14137 | are always positive integers. */ | |
14138 | ||
14139 | static std::pair<int, int> | |
14140 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14141 | const std::string &arg, | |
14142 | std::string::size_type arg_offset) | |
14143 | { | |
14144 | std::pair<int, int> range; | |
14145 | const char *bp_loc = &arg[arg_offset]; | |
14146 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14147 | if (dash != std::string::npos) | |
14148 | { | |
14149 | /* bp_loc is a range (x-z). */ | |
14150 | if (arg.length () == dash + 1) | |
14151 | error (kind == extract_bp_kind::bp | |
14152 | ? _("Bad breakpoint number at or near: '%s'") | |
14153 | : _("Bad breakpoint location number at or near: '%s'"), | |
14154 | bp_loc); | |
14155 | ||
14156 | const char *end; | |
14157 | const char *start_first = bp_loc; | |
14158 | const char *start_second = &arg[dash + 1]; | |
14159 | range.first = extract_bp_num (kind, start_first, '-'); | |
14160 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14161 | ||
14162 | if (range.first > range.second) | |
14163 | error (kind == extract_bp_kind::bp | |
14164 | ? _("Inverted breakpoint range at '%.*s'") | |
14165 | : _("Inverted breakpoint location range at '%.*s'"), | |
14166 | int (end - start_first), start_first); | |
14167 | } | |
14168 | else | |
14169 | { | |
14170 | /* bp_loc is a single value. */ | |
14171 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14172 | range.second = range.first; | |
14173 | } | |
14174 | return range; | |
14175 | } | |
14176 | ||
d0fe4701 XR |
14177 | /* Extract the breakpoint/location range specified by ARG. Returns |
14178 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14179 | BP_LOC_RANGE. | |
14180 | ||
14181 | ARG may be in any of the following forms: | |
14182 | ||
14183 | x where 'x' is a breakpoint number. | |
14184 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14185 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14186 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14187 | location number range. | |
14188 | */ | |
14189 | ||
cc638e86 | 14190 | static void |
d0fe4701 XR |
14191 | extract_bp_number_and_location (const std::string &arg, |
14192 | std::pair<int, int> &bp_num_range, | |
14193 | std::pair<int, int> &bp_loc_range) | |
14194 | { | |
14195 | std::string::size_type dot = arg.find ('.'); | |
14196 | ||
14197 | if (dot != std::string::npos) | |
14198 | { | |
14199 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14200 | ||
14201 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14202 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14203 | |
95e95a6d PA |
14204 | bp_num_range.first |
14205 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14206 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14207 | |
95e95a6d PA |
14208 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14209 | arg, dot + 1); | |
d0fe4701 XR |
14210 | } |
14211 | else | |
14212 | { | |
14213 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14214 | |
95e95a6d | 14215 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14216 | bp_loc_range.first = 0; |
14217 | bp_loc_range.second = 0; | |
14218 | } | |
d0fe4701 XR |
14219 | } |
14220 | ||
14221 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14222 | specifies whether to enable or disable. */ | |
14223 | ||
14224 | static void | |
14225 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14226 | { | |
14227 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14228 | if (loc != NULL) | |
14229 | { | |
b5fa468f TBA |
14230 | if (loc->disabled_by_cond && enable) |
14231 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
14232 | "cannot enable."), bp_num, loc_num); | |
14233 | ||
d0fe4701 XR |
14234 | if (loc->enabled != enable) |
14235 | { | |
14236 | loc->enabled = enable; | |
14237 | mark_breakpoint_location_modified (loc); | |
14238 | } | |
14239 | if (target_supports_enable_disable_tracepoint () | |
14240 | && current_trace_status ()->running && loc->owner | |
14241 | && is_tracepoint (loc->owner)) | |
14242 | target_disable_tracepoint (loc); | |
14243 | } | |
14244 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14245 | |
14246 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14247 | } |
14248 | ||
14249 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14250 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14251 | (inclusive) range of location numbers of that breakpoint to | |
14252 | enable/disable. ENABLE specifies whether to enable or disable the | |
14253 | location. */ | |
14254 | ||
14255 | static void | |
14256 | enable_disable_breakpoint_location_range (int bp_num, | |
14257 | std::pair<int, int> &bp_loc_range, | |
14258 | bool enable) | |
14259 | { | |
14260 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14261 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14262 | } | |
0d381245 | 14263 | |
1900040c MS |
14264 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14265 | If from_tty is nonzero, it prints a message to that effect, | |
14266 | which ends with a period (no newline). */ | |
14267 | ||
c906108c | 14268 | void |
fba45db2 | 14269 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14270 | { |
14271 | /* Never disable a watchpoint scope breakpoint; we want to | |
14272 | hit them when we leave scope so we can delete both the | |
14273 | watchpoint and its scope breakpoint at that time. */ | |
14274 | if (bpt->type == bp_watchpoint_scope) | |
14275 | return; | |
14276 | ||
b5de0fa7 | 14277 | bpt->enable_state = bp_disabled; |
c906108c | 14278 | |
b775012e LM |
14279 | /* Mark breakpoint locations modified. */ |
14280 | mark_breakpoint_modified (bpt); | |
14281 | ||
d248b706 KY |
14282 | if (target_supports_enable_disable_tracepoint () |
14283 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14284 | { | |
40cb8ca5 | 14285 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
14286 | target_disable_tracepoint (location); |
14287 | } | |
14288 | ||
44702360 | 14289 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14290 | |
76727919 | 14291 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14292 | } |
14293 | ||
d0fe4701 XR |
14294 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14295 | specified in ARGS. ARGS may be in any of the formats handled by | |
14296 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14297 | or disable the breakpoints/locations. */ | |
14298 | ||
c906108c | 14299 | static void |
d0fe4701 | 14300 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14301 | { |
c906108c | 14302 | if (args == 0) |
46c6471b | 14303 | { |
43892fdf | 14304 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 14305 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
14306 | { |
14307 | if (enable) | |
14308 | enable_breakpoint (bpt); | |
14309 | else | |
14310 | disable_breakpoint (bpt); | |
14311 | } | |
46c6471b | 14312 | } |
9eaabc75 | 14313 | else |
0d381245 | 14314 | { |
cb791d59 | 14315 | std::string num = extract_arg (&args); |
9eaabc75 | 14316 | |
cb791d59 | 14317 | while (!num.empty ()) |
d248b706 | 14318 | { |
d0fe4701 | 14319 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14320 | |
cc638e86 PA |
14321 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14322 | ||
14323 | if (bp_loc_range.first == bp_loc_range.second | |
14324 | && bp_loc_range.first == 0) | |
d0fe4701 | 14325 | { |
cc638e86 PA |
14326 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14327 | map_breakpoint_number_range (bp_num_range, | |
14328 | enable | |
14329 | ? enable_breakpoint | |
14330 | : disable_breakpoint); | |
14331 | } | |
14332 | else | |
14333 | { | |
14334 | /* Handle breakpoint ids with formats 'x.y' or | |
14335 | 'x.y-z'. */ | |
14336 | enable_disable_breakpoint_location_range | |
14337 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14338 | } |
9eaabc75 | 14339 | num = extract_arg (&args); |
d248b706 | 14340 | } |
0d381245 | 14341 | } |
c906108c SS |
14342 | } |
14343 | ||
d0fe4701 XR |
14344 | /* The disable command disables the specified breakpoints/locations |
14345 | (or all defined breakpoints) so they're no longer effective in | |
14346 | stopping the inferior. ARGS may be in any of the forms defined in | |
14347 | extract_bp_number_and_location. */ | |
14348 | ||
14349 | static void | |
14350 | disable_command (const char *args, int from_tty) | |
14351 | { | |
14352 | enable_disable_command (args, from_tty, false); | |
14353 | } | |
14354 | ||
c906108c | 14355 | static void |
816338b5 SS |
14356 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14357 | int count) | |
c906108c | 14358 | { |
afe38095 | 14359 | int target_resources_ok; |
c906108c SS |
14360 | |
14361 | if (bpt->type == bp_hardware_breakpoint) | |
14362 | { | |
14363 | int i; | |
c5aa993b | 14364 | i = hw_breakpoint_used_count (); |
53a5351d | 14365 | target_resources_ok = |
d92524f1 | 14366 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14367 | i + 1, 0); |
c906108c | 14368 | if (target_resources_ok == 0) |
8a3fe4f8 | 14369 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14370 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14371 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14372 | } |
14373 | ||
cc60f2e3 | 14374 | if (is_watchpoint (bpt)) |
c906108c | 14375 | { |
d07205c2 | 14376 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14377 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14378 | |
a70b8144 | 14379 | try |
c906108c | 14380 | { |
3a5c3e22 PA |
14381 | struct watchpoint *w = (struct watchpoint *) bpt; |
14382 | ||
1e718ff1 TJB |
14383 | orig_enable_state = bpt->enable_state; |
14384 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14385 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14386 | } |
230d2906 | 14387 | catch (const gdb_exception &e) |
c5aa993b | 14388 | { |
1e718ff1 | 14389 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14390 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14391 | bpt->number); | |
14392 | return; | |
c5aa993b | 14393 | } |
c906108c | 14394 | } |
0101ce28 | 14395 | |
b775012e LM |
14396 | bpt->enable_state = bp_enabled; |
14397 | ||
14398 | /* Mark breakpoint locations modified. */ | |
14399 | mark_breakpoint_modified (bpt); | |
14400 | ||
d248b706 KY |
14401 | if (target_supports_enable_disable_tracepoint () |
14402 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14403 | { | |
40cb8ca5 | 14404 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
14405 | target_enable_tracepoint (location); |
14406 | } | |
14407 | ||
b4c291bb | 14408 | bpt->disposition = disposition; |
816338b5 | 14409 | bpt->enable_count = count; |
44702360 | 14410 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14411 | |
76727919 | 14412 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14413 | } |
14414 | ||
fe3f5fa8 | 14415 | |
c906108c | 14416 | void |
fba45db2 | 14417 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14418 | { |
816338b5 | 14419 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14420 | } |
14421 | ||
d0fe4701 XR |
14422 | /* The enable command enables the specified breakpoints/locations (or |
14423 | all defined breakpoints) so they once again become (or continue to | |
14424 | be) effective in stopping the inferior. ARGS may be in any of the | |
14425 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14426 | |
c906108c | 14427 | static void |
981a3fb3 | 14428 | enable_command (const char *args, int from_tty) |
c906108c | 14429 | { |
d0fe4701 | 14430 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14431 | } |
14432 | ||
c906108c | 14433 | static void |
4495129a | 14434 | enable_once_command (const char *args, int from_tty) |
c906108c | 14435 | { |
48649e1b TT |
14436 | map_breakpoint_numbers |
14437 | (args, [&] (breakpoint *b) | |
14438 | { | |
14439 | iterate_over_related_breakpoints | |
14440 | (b, [&] (breakpoint *bpt) | |
14441 | { | |
14442 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14443 | }); | |
14444 | }); | |
816338b5 SS |
14445 | } |
14446 | ||
14447 | static void | |
4495129a | 14448 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14449 | { |
b9d61307 SM |
14450 | int count; |
14451 | ||
14452 | if (args == NULL) | |
14453 | error_no_arg (_("hit count")); | |
14454 | ||
14455 | count = get_number (&args); | |
816338b5 | 14456 | |
48649e1b TT |
14457 | map_breakpoint_numbers |
14458 | (args, [&] (breakpoint *b) | |
14459 | { | |
14460 | iterate_over_related_breakpoints | |
14461 | (b, [&] (breakpoint *bpt) | |
14462 | { | |
14463 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14464 | }); | |
14465 | }); | |
c906108c SS |
14466 | } |
14467 | ||
c906108c | 14468 | static void |
4495129a | 14469 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14470 | { |
48649e1b TT |
14471 | map_breakpoint_numbers |
14472 | (args, [&] (breakpoint *b) | |
14473 | { | |
14474 | iterate_over_related_breakpoints | |
14475 | (b, [&] (breakpoint *bpt) | |
14476 | { | |
14477 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14478 | }); | |
14479 | }); | |
c906108c SS |
14480 | } |
14481 | \f | |
1f3b5d1b PP |
14482 | /* Invalidate last known value of any hardware watchpoint if |
14483 | the memory which that value represents has been written to by | |
14484 | GDB itself. */ | |
14485 | ||
14486 | static void | |
8de0566d YQ |
14487 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14488 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14489 | const bfd_byte *data) |
14490 | { | |
43892fdf | 14491 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 14492 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 14493 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14494 | { |
3a5c3e22 | 14495 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14496 | |
850645cf | 14497 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 14498 | { |
40cb8ca5 | 14499 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
14500 | if (loc->loc_type == bp_loc_hardware_watchpoint |
14501 | && loc->address + loc->length > addr | |
14502 | && addr + len > loc->address) | |
14503 | { | |
3a5c3e22 | 14504 | wp->val = NULL; |
4c1d86d9 | 14505 | wp->val_valid = false; |
3a5c3e22 PA |
14506 | } |
14507 | } | |
1f3b5d1b PP |
14508 | } |
14509 | } | |
14510 | ||
8181d85f DJ |
14511 | /* Create and insert a breakpoint for software single step. */ |
14512 | ||
14513 | void | |
6c95b8df | 14514 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14515 | const address_space *aspace, |
4a64f543 | 14516 | CORE_ADDR next_pc) |
8181d85f | 14517 | { |
7c16b83e PA |
14518 | struct thread_info *tp = inferior_thread (); |
14519 | struct symtab_and_line sal; | |
14520 | CORE_ADDR pc = next_pc; | |
8181d85f | 14521 | |
34b7e8a6 PA |
14522 | if (tp->control.single_step_breakpoints == NULL) |
14523 | { | |
14524 | tp->control.single_step_breakpoints | |
5d5658a1 | 14525 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14526 | } |
8181d85f | 14527 | |
7c16b83e PA |
14528 | sal = find_pc_line (pc, 0); |
14529 | sal.pc = pc; | |
14530 | sal.section = find_pc_overlay (pc); | |
14531 | sal.explicit_pc = 1; | |
34b7e8a6 | 14532 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14533 | |
7c16b83e | 14534 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14535 | } |
14536 | ||
93f9a11f YQ |
14537 | /* Insert single step breakpoints according to the current state. */ |
14538 | ||
14539 | int | |
14540 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14541 | { | |
f5ea389a | 14542 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14543 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14544 | |
f5ea389a | 14545 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14546 | |
a0ff9e1a | 14547 | if (!next_pcs.empty ()) |
93f9a11f | 14548 | { |
f5ea389a | 14549 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14550 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14551 | |
a0ff9e1a | 14552 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14553 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14554 | ||
93f9a11f YQ |
14555 | return 1; |
14556 | } | |
14557 | else | |
14558 | return 0; | |
14559 | } | |
14560 | ||
34b7e8a6 | 14561 | /* See breakpoint.h. */ |
f02253f1 HZ |
14562 | |
14563 | int | |
7c16b83e | 14564 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14565 | const address_space *aspace, |
7c16b83e | 14566 | CORE_ADDR pc) |
1aafd4da | 14567 | { |
40cb8ca5 | 14568 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
14569 | if (loc->inserted |
14570 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14571 | return 1; | |
1aafd4da | 14572 | |
7c16b83e | 14573 | return 0; |
ef370185 JB |
14574 | } |
14575 | ||
14576 | /* Check whether a software single-step breakpoint is inserted at | |
14577 | PC. */ | |
14578 | ||
14579 | int | |
accd0bcd | 14580 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14581 | CORE_ADDR pc) |
14582 | { | |
43892fdf | 14583 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
14584 | { |
14585 | if (bpt->type == bp_single_step | |
14586 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14587 | return 1; | |
14588 | } | |
14589 | return 0; | |
1aafd4da UW |
14590 | } |
14591 | ||
1042e4c0 SS |
14592 | /* Tracepoint-specific operations. */ |
14593 | ||
14594 | /* Set tracepoint count to NUM. */ | |
14595 | static void | |
14596 | set_tracepoint_count (int num) | |
14597 | { | |
14598 | tracepoint_count = num; | |
4fa62494 | 14599 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14600 | } |
14601 | ||
70221824 | 14602 | static void |
0b39b52e | 14603 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14604 | { |
ffc2605c TT |
14605 | event_location_up location = string_to_event_location (&arg, |
14606 | current_language); | |
bac7c5cf GB |
14607 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14608 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14609 | |
558a9d82 | 14610 | create_breakpoint (get_current_arch (), |
ffc2605c | 14611 | location.get (), |
10a636cc | 14612 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14613 | 0 /* tempflag */, |
14614 | bp_tracepoint /* type_wanted */, | |
14615 | 0 /* Ignore count */, | |
14616 | pending_break_support, | |
14617 | ops, | |
14618 | from_tty, | |
14619 | 1 /* enabled */, | |
14620 | 0 /* internal */, 0); | |
1042e4c0 SS |
14621 | } |
14622 | ||
70221824 | 14623 | static void |
0b39b52e | 14624 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14625 | { |
ffc2605c TT |
14626 | event_location_up location = string_to_event_location (&arg, |
14627 | current_language); | |
558a9d82 | 14628 | create_breakpoint (get_current_arch (), |
ffc2605c | 14629 | location.get (), |
10a636cc | 14630 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14631 | 0 /* tempflag */, |
14632 | bp_fast_tracepoint /* type_wanted */, | |
14633 | 0 /* Ignore count */, | |
14634 | pending_break_support, | |
14635 | &tracepoint_breakpoint_ops, | |
14636 | from_tty, | |
14637 | 1 /* enabled */, | |
14638 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14639 | } |
14640 | ||
14641 | /* strace command implementation. Creates a static tracepoint. */ | |
14642 | ||
70221824 | 14643 | static void |
0b39b52e | 14644 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14645 | { |
983af33b | 14646 | struct breakpoint_ops *ops; |
ffc2605c | 14647 | event_location_up location; |
983af33b SDJ |
14648 | |
14649 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14650 | or with a normal static tracepoint. */ | |
61012eef | 14651 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14652 | { |
14653 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14654 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14655 | } |
983af33b | 14656 | else |
f00aae0f KS |
14657 | { |
14658 | ops = &tracepoint_breakpoint_ops; | |
14659 | location = string_to_event_location (&arg, current_language); | |
14660 | } | |
983af33b | 14661 | |
558a9d82 | 14662 | create_breakpoint (get_current_arch (), |
ffc2605c | 14663 | location.get (), |
10a636cc | 14664 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14665 | 0 /* tempflag */, |
14666 | bp_static_tracepoint /* type_wanted */, | |
14667 | 0 /* Ignore count */, | |
14668 | pending_break_support, | |
14669 | ops, | |
14670 | from_tty, | |
14671 | 1 /* enabled */, | |
14672 | 0 /* internal */, 0); | |
7a697b8d SS |
14673 | } |
14674 | ||
409873ef SS |
14675 | /* Set up a fake reader function that gets command lines from a linked |
14676 | list that was acquired during tracepoint uploading. */ | |
14677 | ||
14678 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14679 | static int next_cmd; |
409873ef SS |
14680 | |
14681 | static char * | |
14682 | read_uploaded_action (void) | |
14683 | { | |
a18ba4e4 | 14684 | char *rslt = nullptr; |
409873ef | 14685 | |
a18ba4e4 SM |
14686 | if (next_cmd < this_utp->cmd_strings.size ()) |
14687 | { | |
67aa1f3c | 14688 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14689 | next_cmd++; |
14690 | } | |
409873ef SS |
14691 | |
14692 | return rslt; | |
14693 | } | |
14694 | ||
00bf0b85 SS |
14695 | /* Given information about a tracepoint as recorded on a target (which |
14696 | can be either a live system or a trace file), attempt to create an | |
14697 | equivalent GDB tracepoint. This is not a reliable process, since | |
14698 | the target does not necessarily have all the information used when | |
14699 | the tracepoint was originally defined. */ | |
14700 | ||
d9b3f62e | 14701 | struct tracepoint * |
00bf0b85 | 14702 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14703 | { |
f2fc3015 TT |
14704 | const char *addr_str; |
14705 | char small_buf[100]; | |
d9b3f62e | 14706 | struct tracepoint *tp; |
fd9b8c24 | 14707 | |
409873ef | 14708 | if (utp->at_string) |
67aa1f3c | 14709 | addr_str = utp->at_string.get (); |
409873ef SS |
14710 | else |
14711 | { | |
14712 | /* In the absence of a source location, fall back to raw | |
14713 | address. Since there is no way to confirm that the address | |
14714 | means the same thing as when the trace was started, warn the | |
14715 | user. */ | |
3e43a32a MS |
14716 | warning (_("Uploaded tracepoint %d has no " |
14717 | "source location, using raw address"), | |
409873ef | 14718 | utp->number); |
8c042590 | 14719 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14720 | addr_str = small_buf; |
14721 | } | |
14722 | ||
14723 | /* There's not much we can do with a sequence of bytecodes. */ | |
14724 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14725 | warning (_("Uploaded tracepoint %d condition " |
14726 | "has no source form, ignoring it"), | |
409873ef | 14727 | utp->number); |
d5551862 | 14728 | |
ffc2605c TT |
14729 | event_location_up location = string_to_event_location (&addr_str, |
14730 | current_language); | |
8cdf0e15 | 14731 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14732 | location.get (), |
67aa1f3c | 14733 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 14734 | false /* force_condition */, |
e7e0cddf | 14735 | 0 /* parse cond/thread */, |
8cdf0e15 | 14736 | 0 /* tempflag */, |
0fb4aa4b | 14737 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14738 | 0 /* Ignore count */, |
14739 | pending_break_support, | |
348d480f | 14740 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14741 | 0 /* from_tty */, |
84f4c1fe | 14742 | utp->enabled /* enabled */, |
44f238bb PA |
14743 | 0 /* internal */, |
14744 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14745 | return NULL; |
fd9b8c24 | 14746 | |
409873ef | 14747 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14748 | tp = get_tracepoint (tracepoint_count); |
14749 | gdb_assert (tp != NULL); | |
d5551862 | 14750 | |
00bf0b85 SS |
14751 | if (utp->pass > 0) |
14752 | { | |
8c042590 | 14753 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14754 | tp->number); |
00bf0b85 | 14755 | |
409873ef | 14756 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14757 | } |
14758 | ||
409873ef SS |
14759 | /* If we have uploaded versions of the original commands, set up a |
14760 | special-purpose "reader" function and call the usual command line | |
14761 | reader, then pass the result to the breakpoint command-setting | |
14762 | function. */ | |
a18ba4e4 | 14763 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14764 | { |
12973681 | 14765 | counted_command_line cmd_list; |
00bf0b85 | 14766 | |
409873ef | 14767 | this_utp = utp; |
3149d8c1 | 14768 | next_cmd = 0; |
d5551862 | 14769 | |
60b3cef2 | 14770 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14771 | |
c1fc2657 | 14772 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14773 | } |
a18ba4e4 SM |
14774 | else if (!utp->actions.empty () |
14775 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14776 | warning (_("Uploaded tracepoint %d actions " |
14777 | "have no source form, ignoring them"), | |
409873ef | 14778 | utp->number); |
00bf0b85 | 14779 | |
f196051f | 14780 | /* Copy any status information that might be available. */ |
c1fc2657 | 14781 | tp->hit_count = utp->hit_count; |
f196051f SS |
14782 | tp->traceframe_usage = utp->traceframe_usage; |
14783 | ||
00bf0b85 | 14784 | return tp; |
d9b3f62e | 14785 | } |
00bf0b85 | 14786 | |
1042e4c0 SS |
14787 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14788 | omitted. */ | |
14789 | ||
14790 | static void | |
1d12d88f | 14791 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14792 | { |
79a45e25 | 14793 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14794 | int num_printed; |
1042e4c0 | 14795 | |
5c458ae8 | 14796 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14797 | |
14798 | if (num_printed == 0) | |
1042e4c0 | 14799 | { |
e5a67952 | 14800 | if (args == NULL || *args == '\0') |
112e8700 | 14801 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14802 | else |
112e8700 | 14803 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14804 | } |
ad443146 SS |
14805 | |
14806 | default_collect_info (); | |
1042e4c0 SS |
14807 | } |
14808 | ||
4a64f543 | 14809 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14810 | Not supported by all targets. */ |
14811 | static void | |
5fed81ff | 14812 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14813 | { |
14814 | enable_command (args, from_tty); | |
14815 | } | |
14816 | ||
4a64f543 | 14817 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14818 | Not supported by all targets. */ |
14819 | static void | |
5fed81ff | 14820 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14821 | { |
14822 | disable_command (args, from_tty); | |
14823 | } | |
14824 | ||
4a64f543 | 14825 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14826 | static void |
4495129a | 14827 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14828 | { |
1042e4c0 SS |
14829 | dont_repeat (); |
14830 | ||
14831 | if (arg == 0) | |
14832 | { | |
14833 | int breaks_to_delete = 0; | |
14834 | ||
14835 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
14836 | Do not delete internal or call-dummy breakpoints, these |
14837 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 14838 | argument. */ |
f6d17b2b | 14839 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 14840 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
14841 | { |
14842 | breaks_to_delete = 1; | |
14843 | break; | |
14844 | } | |
1042e4c0 SS |
14845 | |
14846 | /* Ask user only if there are some breakpoints to delete. */ | |
14847 | if (!from_tty | |
14848 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14849 | { | |
1428b37a | 14850 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 14851 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14852 | delete_breakpoint (b); |
1042e4c0 SS |
14853 | } |
14854 | } | |
14855 | else | |
48649e1b | 14856 | map_breakpoint_numbers |
b926417a | 14857 | (arg, [&] (breakpoint *br) |
48649e1b | 14858 | { |
b926417a | 14859 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14860 | }); |
1042e4c0 SS |
14861 | } |
14862 | ||
197f0a60 TT |
14863 | /* Helper function for trace_pass_command. */ |
14864 | ||
14865 | static void | |
d9b3f62e | 14866 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14867 | { |
d9b3f62e | 14868 | tp->pass_count = count; |
76727919 | 14869 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14870 | if (from_tty) |
14871 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14872 | tp->number, count); |
197f0a60 TT |
14873 | } |
14874 | ||
1042e4c0 SS |
14875 | /* Set passcount for tracepoint. |
14876 | ||
14877 | First command argument is passcount, second is tracepoint number. | |
14878 | If tracepoint number omitted, apply to most recently defined. | |
14879 | Also accepts special argument "all". */ | |
14880 | ||
14881 | static void | |
0b39b52e | 14882 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14883 | { |
d9b3f62e | 14884 | struct tracepoint *t1; |
0b39b52e | 14885 | ULONGEST count; |
1042e4c0 SS |
14886 | |
14887 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14888 | error (_("passcount command requires an " |
14889 | "argument (count + optional TP num)")); | |
1042e4c0 | 14890 | |
0b39b52e | 14891 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14892 | |
529480d0 | 14893 | args = skip_spaces (args); |
1042e4c0 SS |
14894 | if (*args && strncasecmp (args, "all", 3) == 0) |
14895 | { | |
14896 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
14897 | if (*args) |
14898 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14899 | |
f6d17b2b | 14900 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
14901 | { |
14902 | t1 = (struct tracepoint *) b; | |
14903 | trace_pass_set_count (t1, count, from_tty); | |
14904 | } | |
197f0a60 TT |
14905 | } |
14906 | else if (*args == '\0') | |
1042e4c0 | 14907 | { |
5fa1d40e | 14908 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14909 | if (t1) |
197f0a60 TT |
14910 | trace_pass_set_count (t1, count, from_tty); |
14911 | } | |
14912 | else | |
14913 | { | |
bfd28288 PA |
14914 | number_or_range_parser parser (args); |
14915 | while (!parser.finished ()) | |
1042e4c0 | 14916 | { |
bfd28288 | 14917 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14918 | if (t1) |
14919 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14920 | } |
14921 | } | |
1042e4c0 SS |
14922 | } |
14923 | ||
d9b3f62e | 14924 | struct tracepoint * |
1042e4c0 SS |
14925 | get_tracepoint (int num) |
14926 | { | |
f6d17b2b | 14927 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14928 | if (t->number == num) |
d9b3f62e | 14929 | return (struct tracepoint *) t; |
1042e4c0 SS |
14930 | |
14931 | return NULL; | |
14932 | } | |
14933 | ||
d5551862 SS |
14934 | /* Find the tracepoint with the given target-side number (which may be |
14935 | different from the tracepoint number after disconnecting and | |
14936 | reconnecting). */ | |
14937 | ||
d9b3f62e | 14938 | struct tracepoint * |
d5551862 SS |
14939 | get_tracepoint_by_number_on_target (int num) |
14940 | { | |
f6d17b2b | 14941 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
14942 | { |
14943 | struct tracepoint *t = (struct tracepoint *) b; | |
14944 | ||
14945 | if (t->number_on_target == num) | |
14946 | return t; | |
14947 | } | |
d5551862 SS |
14948 | |
14949 | return NULL; | |
14950 | } | |
14951 | ||
1042e4c0 | 14952 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14953 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14954 | If the argument is missing, the most recent tracepoint |
14955 | (tracepoint_count) is returned. */ | |
14956 | ||
d9b3f62e | 14957 | struct tracepoint * |
0b39b52e | 14958 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14959 | number_or_range_parser *parser) |
1042e4c0 | 14960 | { |
1042e4c0 | 14961 | int tpnum; |
0b39b52e | 14962 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14963 | |
bfd28288 | 14964 | if (parser != NULL) |
197f0a60 | 14965 | { |
bfd28288 PA |
14966 | gdb_assert (!parser->finished ()); |
14967 | tpnum = parser->get_number (); | |
197f0a60 TT |
14968 | } |
14969 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14970 | tpnum = tracepoint_count; |
1042e4c0 | 14971 | else |
197f0a60 | 14972 | tpnum = get_number (arg); |
1042e4c0 SS |
14973 | |
14974 | if (tpnum <= 0) | |
14975 | { | |
14976 | if (instring && *instring) | |
14977 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14978 | instring); | |
14979 | else | |
5fa1d40e | 14980 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14981 | return NULL; |
14982 | } | |
14983 | ||
f6d17b2b | 14984 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14985 | if (t->number == tpnum) |
d9b3f62e | 14986 | return (struct tracepoint *) t; |
1042e4c0 | 14987 | |
1042e4c0 SS |
14988 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14989 | return NULL; | |
14990 | } | |
14991 | ||
d9b3f62e PA |
14992 | void |
14993 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14994 | { | |
14995 | if (b->thread != -1) | |
14996 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14997 | ||
14998 | if (b->task != 0) | |
14999 | fprintf_unfiltered (fp, " task %d", b->task); | |
15000 | ||
15001 | fprintf_unfiltered (fp, "\n"); | |
15002 | } | |
15003 | ||
6149aea9 PA |
15004 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15005 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15006 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 15007 | true. */ |
6149aea9 | 15008 | |
1042e4c0 | 15009 | static void |
4495129a | 15010 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 15011 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 15012 | { |
6149aea9 | 15013 | int any = 0; |
6149aea9 | 15014 | int extra_trace_bits = 0; |
1042e4c0 | 15015 | |
6149aea9 PA |
15016 | if (filename == 0 || *filename == 0) |
15017 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15018 | |
15019 | /* See if we have anything to save. */ | |
43892fdf | 15020 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
15021 | { |
15022 | /* Skip internal and momentary breakpoints. */ | |
15023 | if (!user_breakpoint_p (tp)) | |
15024 | continue; | |
6149aea9 | 15025 | |
01add95b SM |
15026 | /* If we have a filter, only save the breakpoints it accepts. */ |
15027 | if (filter && !filter (tp)) | |
15028 | continue; | |
6149aea9 | 15029 | |
01add95b | 15030 | any = 1; |
6149aea9 | 15031 | |
01add95b SM |
15032 | if (is_tracepoint (tp)) |
15033 | { | |
15034 | extra_trace_bits = 1; | |
6149aea9 | 15035 | |
01add95b SM |
15036 | /* We can stop searching. */ |
15037 | break; | |
15038 | } | |
15039 | } | |
6149aea9 PA |
15040 | |
15041 | if (!any) | |
1042e4c0 | 15042 | { |
6149aea9 | 15043 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15044 | return; |
15045 | } | |
15046 | ||
ee0c3293 | 15047 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15048 | |
15049 | stdio_file fp; | |
15050 | ||
ee0c3293 | 15051 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15052 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15053 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15054 | |
6149aea9 | 15055 | if (extra_trace_bits) |
d7e74731 | 15056 | save_trace_state_variables (&fp); |
8bf6485c | 15057 | |
43892fdf | 15058 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
15059 | { |
15060 | /* Skip internal and momentary breakpoints. */ | |
15061 | if (!user_breakpoint_p (tp)) | |
15062 | continue; | |
8bf6485c | 15063 | |
01add95b SM |
15064 | /* If we have a filter, only save the breakpoints it accepts. */ |
15065 | if (filter && !filter (tp)) | |
15066 | continue; | |
6149aea9 | 15067 | |
01add95b | 15068 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15069 | |
01add95b SM |
15070 | /* Note, we can't rely on tp->number for anything, as we can't |
15071 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15072 | instead. */ | |
6149aea9 | 15073 | |
01add95b SM |
15074 | if (tp->cond_string) |
15075 | fp.printf (" condition $bpnum %s\n", tp->cond_string); | |
6149aea9 | 15076 | |
01add95b SM |
15077 | if (tp->ignore_count) |
15078 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 15079 | |
01add95b SM |
15080 | if (tp->type != bp_dprintf && tp->commands) |
15081 | { | |
15082 | fp.puts (" commands\n"); | |
1042e4c0 | 15083 | |
01add95b SM |
15084 | current_uiout->redirect (&fp); |
15085 | try | |
15086 | { | |
15087 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
15088 | } | |
15089 | catch (const gdb_exception &ex) | |
15090 | { | |
15091 | current_uiout->redirect (NULL); | |
15092 | throw; | |
15093 | } | |
6149aea9 | 15094 | |
01add95b SM |
15095 | current_uiout->redirect (NULL); |
15096 | fp.puts (" end\n"); | |
15097 | } | |
6149aea9 | 15098 | |
01add95b SM |
15099 | if (tp->enable_state == bp_disabled) |
15100 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 15101 | |
01add95b SM |
15102 | /* If this is a multi-location breakpoint, check if the locations |
15103 | should be individually disabled. Watchpoint locations are | |
15104 | special, and not user visible. */ | |
15105 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15106 | { | |
15107 | int n = 1; | |
40cb8ca5 | 15108 | |
01add95b SM |
15109 | for (bp_location *loc : tp->locations ()) |
15110 | { | |
15111 | if (!loc->enabled) | |
15112 | fp.printf ("disable $bpnum.%d\n", n); | |
15113 | ||
15114 | n++; | |
15115 | } | |
15116 | } | |
15117 | } | |
8bf6485c | 15118 | |
6149aea9 | 15119 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15120 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15121 | |
1042e4c0 | 15122 | if (from_tty) |
ee0c3293 | 15123 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15124 | } |
15125 | ||
15126 | /* The `save breakpoints' command. */ | |
15127 | ||
15128 | static void | |
4495129a | 15129 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15130 | { |
15131 | save_breakpoints (args, from_tty, NULL); | |
15132 | } | |
15133 | ||
15134 | /* The `save tracepoints' command. */ | |
15135 | ||
15136 | static void | |
4495129a | 15137 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15138 | { |
15139 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15140 | } |
15141 | ||
c906108c | 15142 | \f |
629500fa KS |
15143 | /* This help string is used to consolidate all the help string for specifying |
15144 | locations used by several commands. */ | |
15145 | ||
15146 | #define LOCATION_HELP_STRING \ | |
15147 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15148 | source filename, function name, label name, and line number.\n\ | |
15149 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15150 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15151 | \"factorial.c:fact:the_top\".\n\ | |
15152 | \n\ | |
15153 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15154 | program. Example: To specify the fourth byte past the start function\n\ | |
15155 | \"main\", use \"*main + 4\".\n\ | |
15156 | \n\ | |
15157 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15158 | syntax to specify location parameters.\n\ | |
15159 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15160 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15161 | -function fact -label the_top\".\n\ |
15162 | \n\ | |
15163 | By default, a specified function is matched against the program's\n\ | |
15164 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15165 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15166 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15167 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15168 | specified name as a complete fully-qualified name instead." |
629500fa | 15169 | |
4a64f543 MS |
15170 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15171 | commands. It is defined as a macro to prevent duplication. | |
15172 | COMMAND should be a string constant containing the name of the | |
15173 | command. */ | |
629500fa | 15174 | |
31e2b00f | 15175 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
15176 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
15177 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
15178 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
15179 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15180 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15181 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15182 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15183 | below.\n\ | |
15184 | \n\ | |
dc10affe PA |
15185 | With no LOCATION, uses current execution address of the selected\n\ |
15186 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15187 | \n\ |
15188 | THREADNUM is the number from \"info threads\".\n\ | |
15189 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
15190 | \n\ |
15191 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
15192 | it is invalid for all current locations.\n\ | |
89549d7f | 15193 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15194 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15195 | conditions are different.\n\ | |
31e2b00f AS |
15196 | \n\ |
15197 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15198 | ||
44feb3ce TT |
15199 | /* List of subcommands for "catch". */ |
15200 | static struct cmd_list_element *catch_cmdlist; | |
15201 | ||
15202 | /* List of subcommands for "tcatch". */ | |
15203 | static struct cmd_list_element *tcatch_cmdlist; | |
15204 | ||
9ac4176b | 15205 | void |
a121b7c1 | 15206 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15207 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15208 | completer_ftype *completer, |
44feb3ce TT |
15209 | void *user_data_catch, |
15210 | void *user_data_tcatch) | |
15211 | { | |
15212 | struct cmd_list_element *command; | |
15213 | ||
0450cc4c | 15214 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15215 | &catch_cmdlist); |
15216 | set_cmd_sfunc (command, sfunc); | |
15217 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15218 | set_cmd_completer (command, completer); |
44feb3ce | 15219 | |
0450cc4c | 15220 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15221 | &tcatch_cmdlist); |
15222 | set_cmd_sfunc (command, sfunc); | |
15223 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15224 | set_cmd_completer (command, completer); |
44feb3ce TT |
15225 | } |
15226 | ||
0574c78f GB |
15227 | /* Zero if any of the breakpoint's locations could be a location where |
15228 | functions have been inlined, nonzero otherwise. */ | |
15229 | ||
15230 | static int | |
15231 | is_non_inline_function (struct breakpoint *b) | |
15232 | { | |
15233 | /* The shared library event breakpoint is set on the address of a | |
15234 | non-inline function. */ | |
15235 | if (b->type == bp_shlib_event) | |
15236 | return 1; | |
15237 | ||
15238 | return 0; | |
15239 | } | |
15240 | ||
15241 | /* Nonzero if the specified PC cannot be a location where functions | |
15242 | have been inlined. */ | |
15243 | ||
15244 | int | |
accd0bcd | 15245 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15246 | const struct target_waitstatus *ws) |
0574c78f | 15247 | { |
43892fdf | 15248 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
15249 | { |
15250 | if (!is_non_inline_function (b)) | |
15251 | continue; | |
15252 | ||
40cb8ca5 | 15253 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
15254 | { |
15255 | if (!bl->shlib_disabled | |
09ac7c10 | 15256 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15257 | return 1; |
15258 | } | |
15259 | } | |
15260 | ||
15261 | return 0; | |
15262 | } | |
15263 | ||
2f202fde JK |
15264 | /* Remove any references to OBJFILE which is going to be freed. */ |
15265 | ||
15266 | void | |
15267 | breakpoint_free_objfile (struct objfile *objfile) | |
15268 | { | |
48d7020b | 15269 | for (bp_location *loc : all_bp_locations ()) |
eb822aa6 | 15270 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15271 | loc->symtab = NULL; |
15272 | } | |
15273 | ||
2060206e PA |
15274 | void |
15275 | initialize_breakpoint_ops (void) | |
15276 | { | |
15277 | static int initialized = 0; | |
15278 | ||
15279 | struct breakpoint_ops *ops; | |
15280 | ||
15281 | if (initialized) | |
15282 | return; | |
15283 | initialized = 1; | |
15284 | ||
15285 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15286 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15287 | internal and momentary breakpoints, etc.). */ | |
15288 | ops = &bkpt_base_breakpoint_ops; | |
15289 | *ops = base_breakpoint_ops; | |
15290 | ops->re_set = bkpt_re_set; | |
15291 | ops->insert_location = bkpt_insert_location; | |
15292 | ops->remove_location = bkpt_remove_location; | |
15293 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15294 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15295 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15296 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15297 | |
15298 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15299 | ops = &bkpt_breakpoint_ops; | |
15300 | *ops = bkpt_base_breakpoint_ops; | |
15301 | ops->re_set = bkpt_re_set; | |
15302 | ops->resources_needed = bkpt_resources_needed; | |
15303 | ops->print_it = bkpt_print_it; | |
15304 | ops->print_mention = bkpt_print_mention; | |
15305 | ops->print_recreate = bkpt_print_recreate; | |
15306 | ||
15307 | /* Ranged breakpoints. */ | |
15308 | ops = &ranged_breakpoint_ops; | |
15309 | *ops = bkpt_breakpoint_ops; | |
15310 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15311 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15312 | ops->print_it = print_it_ranged_breakpoint; | |
15313 | ops->print_one = print_one_ranged_breakpoint; | |
15314 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15315 | ops->print_mention = print_mention_ranged_breakpoint; | |
15316 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15317 | ||
15318 | /* Internal breakpoints. */ | |
15319 | ops = &internal_breakpoint_ops; | |
15320 | *ops = bkpt_base_breakpoint_ops; | |
15321 | ops->re_set = internal_bkpt_re_set; | |
15322 | ops->check_status = internal_bkpt_check_status; | |
15323 | ops->print_it = internal_bkpt_print_it; | |
15324 | ops->print_mention = internal_bkpt_print_mention; | |
15325 | ||
15326 | /* Momentary breakpoints. */ | |
15327 | ops = &momentary_breakpoint_ops; | |
15328 | *ops = bkpt_base_breakpoint_ops; | |
15329 | ops->re_set = momentary_bkpt_re_set; | |
15330 | ops->check_status = momentary_bkpt_check_status; | |
15331 | ops->print_it = momentary_bkpt_print_it; | |
15332 | ops->print_mention = momentary_bkpt_print_mention; | |
15333 | ||
55aa24fb SDJ |
15334 | /* Probe breakpoints. */ |
15335 | ops = &bkpt_probe_breakpoint_ops; | |
15336 | *ops = bkpt_breakpoint_ops; | |
15337 | ops->insert_location = bkpt_probe_insert_location; | |
15338 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15339 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15340 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15341 | |
2060206e PA |
15342 | /* Watchpoints. */ |
15343 | ops = &watchpoint_breakpoint_ops; | |
15344 | *ops = base_breakpoint_ops; | |
15345 | ops->re_set = re_set_watchpoint; | |
15346 | ops->insert_location = insert_watchpoint; | |
15347 | ops->remove_location = remove_watchpoint; | |
15348 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15349 | ops->check_status = check_status_watchpoint; | |
15350 | ops->resources_needed = resources_needed_watchpoint; | |
15351 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15352 | ops->print_it = print_it_watchpoint; | |
15353 | ops->print_mention = print_mention_watchpoint; | |
15354 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15355 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15356 | |
15357 | /* Masked watchpoints. */ | |
15358 | ops = &masked_watchpoint_breakpoint_ops; | |
15359 | *ops = watchpoint_breakpoint_ops; | |
15360 | ops->insert_location = insert_masked_watchpoint; | |
15361 | ops->remove_location = remove_masked_watchpoint; | |
15362 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15363 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15364 | ops->print_it = print_it_masked_watchpoint; | |
15365 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15366 | ops->print_mention = print_mention_masked_watchpoint; | |
15367 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15368 | ||
15369 | /* Tracepoints. */ | |
15370 | ops = &tracepoint_breakpoint_ops; | |
15371 | *ops = base_breakpoint_ops; | |
15372 | ops->re_set = tracepoint_re_set; | |
15373 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15374 | ops->print_one_detail = tracepoint_print_one_detail; | |
15375 | ops->print_mention = tracepoint_print_mention; | |
15376 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15377 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15378 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15379 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15380 | |
55aa24fb SDJ |
15381 | /* Probe tracepoints. */ |
15382 | ops = &tracepoint_probe_breakpoint_ops; | |
15383 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15384 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15385 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15386 | |
983af33b SDJ |
15387 | /* Static tracepoints with marker (`-m'). */ |
15388 | ops = &strace_marker_breakpoint_ops; | |
15389 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15390 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15391 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15392 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15393 | |
15394 | /* Fork catchpoints. */ | |
15395 | ops = &catch_fork_breakpoint_ops; | |
15396 | *ops = base_breakpoint_ops; | |
15397 | ops->insert_location = insert_catch_fork; | |
15398 | ops->remove_location = remove_catch_fork; | |
15399 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15400 | ops->print_it = print_it_catch_fork; | |
15401 | ops->print_one = print_one_catch_fork; | |
15402 | ops->print_mention = print_mention_catch_fork; | |
15403 | ops->print_recreate = print_recreate_catch_fork; | |
15404 | ||
15405 | /* Vfork catchpoints. */ | |
15406 | ops = &catch_vfork_breakpoint_ops; | |
15407 | *ops = base_breakpoint_ops; | |
15408 | ops->insert_location = insert_catch_vfork; | |
15409 | ops->remove_location = remove_catch_vfork; | |
15410 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15411 | ops->print_it = print_it_catch_vfork; | |
15412 | ops->print_one = print_one_catch_vfork; | |
15413 | ops->print_mention = print_mention_catch_vfork; | |
15414 | ops->print_recreate = print_recreate_catch_vfork; | |
15415 | ||
15416 | /* Exec catchpoints. */ | |
15417 | ops = &catch_exec_breakpoint_ops; | |
15418 | *ops = base_breakpoint_ops; | |
2060206e PA |
15419 | ops->insert_location = insert_catch_exec; |
15420 | ops->remove_location = remove_catch_exec; | |
15421 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15422 | ops->print_it = print_it_catch_exec; | |
15423 | ops->print_one = print_one_catch_exec; | |
15424 | ops->print_mention = print_mention_catch_exec; | |
15425 | ops->print_recreate = print_recreate_catch_exec; | |
15426 | ||
edcc5120 TT |
15427 | /* Solib-related catchpoints. */ |
15428 | ops = &catch_solib_breakpoint_ops; | |
15429 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15430 | ops->insert_location = insert_catch_solib; |
15431 | ops->remove_location = remove_catch_solib; | |
15432 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15433 | ops->check_status = check_status_catch_solib; | |
15434 | ops->print_it = print_it_catch_solib; | |
15435 | ops->print_one = print_one_catch_solib; | |
15436 | ops->print_mention = print_mention_catch_solib; | |
15437 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15438 | |
15439 | ops = &dprintf_breakpoint_ops; | |
15440 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15441 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15442 | ops->resources_needed = bkpt_resources_needed; |
15443 | ops->print_it = bkpt_print_it; | |
15444 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15445 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15446 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15447 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15448 | } |
15449 | ||
8bfd80db YQ |
15450 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15451 | ||
15452 | static struct cmd_list_element *enablebreaklist = NULL; | |
15453 | ||
8588b356 SM |
15454 | /* See breakpoint.h. */ |
15455 | ||
15456 | cmd_list_element *commands_cmd_element = nullptr; | |
15457 | ||
6c265988 | 15458 | void _initialize_breakpoint (); |
c906108c | 15459 | void |
6c265988 | 15460 | _initialize_breakpoint () |
c906108c SS |
15461 | { |
15462 | struct cmd_list_element *c; | |
15463 | ||
2060206e PA |
15464 | initialize_breakpoint_ops (); |
15465 | ||
c90e7d63 SM |
15466 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
15467 | "breakpoint"); | |
15468 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
15469 | "breakpoint"); | |
15470 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
15471 | "breakpoint"); | |
84acb35a | 15472 | |
c906108c SS |
15473 | breakpoint_chain = 0; |
15474 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15475 | before a breakpoint is set. */ | |
15476 | breakpoint_count = 0; | |
15477 | ||
1042e4c0 SS |
15478 | tracepoint_count = 0; |
15479 | ||
1bedd215 AC |
15480 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15481 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15482 | Usage is `ignore N COUNT'.")); | |
c906108c | 15483 | |
8588b356 SM |
15484 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15485 | commands_command, _("\ | |
18da0c51 MG |
15486 | Set commands to be executed when the given breakpoints are hit.\n\ |
15487 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15488 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15489 | (e.g. `5-7').\n\ | |
c906108c SS |
15490 | With no argument, the targeted breakpoint is the last one set.\n\ |
15491 | The commands themselves follow starting on the next line.\n\ | |
15492 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15493 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15494 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15495 | |
b1d4d8d1 TBA |
15496 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
15497 | static std::string condition_command_help | |
15498 | = gdb::option::build_help (_("\ | |
1bedd215 | 15499 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 15500 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 15501 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
15502 | \n\ |
15503 | Options:\n\ | |
15504 | %OPTIONS%"), cc_opts); | |
15505 | ||
15506 | c = add_com ("condition", class_breakpoint, condition_command, | |
15507 | condition_command_help.c_str ()); | |
15508 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 15509 | |
1bedd215 | 15510 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15511 | Set a temporary breakpoint.\n\ |
c906108c SS |
15512 | Like \"break\" except the breakpoint is only temporary,\n\ |
15513 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15514 | by using \"enable delete\" on the breakpoint number.\n\ |
15515 | \n" | |
15516 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15517 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15518 | |
1bedd215 | 15519 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15520 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15521 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15522 | some target hardware may not have this support.\n\ |
15523 | \n" | |
15524 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15525 | set_cmd_completer (c, location_completer); |
c906108c | 15526 | |
1bedd215 | 15527 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15528 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15529 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15530 | so it will be deleted when hit.\n\ |
15531 | \n" | |
15532 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15533 | set_cmd_completer (c, location_completer); |
c906108c | 15534 | |
3947f654 SM |
15535 | cmd_list_element *enable_cmd |
15536 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
15537 | Enable all or some breakpoints.\n\ |
15538 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15539 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15540 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15541 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15542 | With a subcommand you can enable temporarily."), |
3947f654 | 15543 | &enablelist, 1, &cmdlist); |
c906108c | 15544 | |
3947f654 | 15545 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 15546 | |
84951ab5 | 15547 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15548 | Enable all or some breakpoints.\n\ |
15549 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15550 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15551 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15552 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 15553 | &enablebreaklist, 1, &enablelist); |
c906108c | 15554 | |
1a966eab | 15555 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15556 | Enable some breakpoints for one hit.\n\ |
15557 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15558 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15559 | &enablebreaklist); |
15560 | ||
1a966eab | 15561 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15562 | Enable some breakpoints and delete when hit.\n\ |
15563 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15564 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15565 | &enablebreaklist); |
15566 | ||
816338b5 | 15567 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15568 | Enable some breakpoints for COUNT hits.\n\ |
15569 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15570 | If a breakpoint is hit while enabled in this fashion,\n\ |
15571 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15572 | &enablebreaklist); | |
15573 | ||
1a966eab | 15574 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15575 | Enable some breakpoints and delete when hit.\n\ |
15576 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15577 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15578 | &enablelist); |
15579 | ||
1a966eab | 15580 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15581 | Enable some breakpoints for one hit.\n\ |
15582 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15583 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15584 | &enablelist); |
15585 | ||
15586 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15587 | Enable some breakpoints for COUNT hits.\n\ |
15588 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15589 | If a breakpoint is hit while enabled in this fashion,\n\ |
15590 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15591 | &enablelist); |
15592 | ||
3947f654 SM |
15593 | cmd_list_element *disable_cmd |
15594 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
15595 | Disable all or some breakpoints.\n\ |
15596 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15597 | Arguments are breakpoint numbers with spaces in between.\n\ |
15598 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15599 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
15600 | &disablelist, 1, &cmdlist); |
15601 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
15602 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 15603 | |
57b4f16e | 15604 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
15605 | Disable all or some breakpoints.\n\ |
15606 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15607 | Arguments are breakpoint numbers with spaces in between.\n\ |
15608 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15609 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15610 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15611 | &disablelist); |
15612 | ||
3947f654 SM |
15613 | cmd_list_element *delete_cmd |
15614 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
15615 | Delete all or some breakpoints.\n\ |
15616 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15617 | Arguments are breakpoint numbers with spaces in between.\n\ |
15618 | To delete all breakpoints, give no argument.\n\ | |
15619 | \n\ | |
590042fc | 15620 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
15621 | &deletelist, 1, &cmdlist); |
15622 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
15623 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 15624 | |
57b4f16e | 15625 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
15626 | Delete all or some breakpoints or auto-display expressions.\n\ |
15627 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15628 | Arguments are breakpoint numbers with spaces in between.\n\ |
15629 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15630 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15631 | &deletelist); |
15632 | ||
3947f654 SM |
15633 | cmd_list_element *clear_cmd |
15634 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
15635 | Clear breakpoint at specified location.\n\ |
15636 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15637 | \n\ |
15638 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15639 | is executing in.\n" |
89549d7f | 15640 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15641 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 15642 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 15643 | |
3947f654 SM |
15644 | cmd_list_element *break_cmd |
15645 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 15646 | Set breakpoint at specified location.\n" |
31e2b00f | 15647 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 15648 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 15649 | |
3947f654 SM |
15650 | add_com_alias ("b", break_cmd, class_run, 1); |
15651 | add_com_alias ("br", break_cmd, class_run, 1); | |
15652 | add_com_alias ("bre", break_cmd, class_run, 1); | |
15653 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 15654 | |
c906108c SS |
15655 | if (dbx_commands) |
15656 | { | |
1bedd215 AC |
15657 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15658 | Break in function/address or break at a line in the current file."), | |
2f822da5 | 15659 | &stoplist, 1, &cmdlist); |
c5aa993b | 15660 | add_cmd ("in", class_breakpoint, stopin_command, |
1a966eab | 15661 | _("Break in function or address."), &stoplist); |
c5aa993b | 15662 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15663 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15664 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15665 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15666 | The \"Type\" column indicates one of:\n\ |
15667 | \tbreakpoint - normal breakpoint\n\ | |
15668 | \twatchpoint - watchpoint\n\ | |
15669 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15670 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15671 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15672 | address and file/line number respectively.\n\ |
15673 | \n\ | |
15674 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15675 | are set to the address of the last breakpoint listed unless the command\n\ |
15676 | is prefixed with \"server \".\n\n\ | |
c906108c | 15677 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15678 | breakpoint set.")); |
c906108c SS |
15679 | } |
15680 | ||
e0f25bd9 SM |
15681 | cmd_list_element *info_breakpoints_cmd |
15682 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 15683 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15684 | The \"Type\" column indicates one of:\n\ |
15685 | \tbreakpoint - normal breakpoint\n\ | |
15686 | \twatchpoint - watchpoint\n\ | |
15687 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15688 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15689 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15690 | address and file/line number respectively.\n\ |
15691 | \n\ | |
15692 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15693 | are set to the address of the last breakpoint listed unless the command\n\ |
15694 | is prefixed with \"server \".\n\n\ | |
c906108c | 15695 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15696 | breakpoint set.")); |
c906108c | 15697 | |
e0f25bd9 | 15698 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 15699 | |
1a966eab AC |
15700 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15701 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15702 | The \"Type\" column indicates one of:\n\ |
15703 | \tbreakpoint - normal breakpoint\n\ | |
15704 | \twatchpoint - watchpoint\n\ | |
15705 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15706 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15707 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15708 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15709 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15710 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15711 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15712 | address and file/line number respectively.\n\ |
15713 | \n\ | |
15714 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15715 | are set to the address of the last breakpoint listed unless the command\n\ |
15716 | is prefixed with \"server \".\n\n\ | |
c906108c | 15717 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15718 | breakpoint set."), |
c906108c SS |
15719 | &maintenanceinfolist); |
15720 | ||
3b6acaee | 15721 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 15722 | Set catchpoints to catch events."), |
2f822da5 | 15723 | &catch_cmdlist, |
3b6acaee | 15724 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 15725 | |
3b6acaee | 15726 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 15727 | Set temporary catchpoints to catch events."), |
2f822da5 | 15728 | &tcatch_cmdlist, |
3b6acaee | 15729 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 15730 | |
44feb3ce TT |
15731 | add_catch_command ("fork", _("Catch calls to fork."), |
15732 | catch_fork_command_1, | |
dda83cd7 | 15733 | NULL, |
44feb3ce TT |
15734 | (void *) (uintptr_t) catch_fork_permanent, |
15735 | (void *) (uintptr_t) catch_fork_temporary); | |
15736 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15737 | catch_fork_command_1, | |
dda83cd7 | 15738 | NULL, |
44feb3ce TT |
15739 | (void *) (uintptr_t) catch_vfork_permanent, |
15740 | (void *) (uintptr_t) catch_vfork_temporary); | |
15741 | add_catch_command ("exec", _("Catch calls to exec."), | |
15742 | catch_exec_command_1, | |
dda83cd7 | 15743 | NULL, |
a96d9b2e SDJ |
15744 | CATCH_PERMANENT, |
15745 | CATCH_TEMPORARY); | |
edcc5120 TT |
15746 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15747 | Usage: catch load [REGEX]\n\ | |
15748 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15749 | catch_load_command_1, | |
15750 | NULL, | |
15751 | CATCH_PERMANENT, | |
15752 | CATCH_TEMPORARY); | |
15753 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15754 | Usage: catch unload [REGEX]\n\ | |
15755 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15756 | catch_unload_command_1, | |
15757 | NULL, | |
15758 | CATCH_PERMANENT, | |
15759 | CATCH_TEMPORARY); | |
c5aa993b | 15760 | |
a15a5258 AB |
15761 | const auto opts = make_watch_options_def_group (nullptr); |
15762 | ||
15763 | static const std::string watch_help = gdb::option::build_help (_("\ | |
15764 | Set a watchpoint for EXPRESSION.\n\ | |
15765 | Usage: watch [-location] EXPRESSION\n\ | |
15766 | \n\ | |
15767 | Options:\n\ | |
15768 | %OPTIONS%\n\ | |
15769 | \n\ | |
c906108c | 15770 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
15771 | an expression changes."), opts); |
15772 | c = add_com ("watch", class_breakpoint, watch_command, | |
15773 | watch_help.c_str ()); | |
15774 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15775 | ||
15776 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
15777 | Set a read watchpoint for EXPRESSION.\n\ | |
15778 | Usage: rwatch [-location] EXPRESSION\n\ | |
15779 | \n\ | |
15780 | Options:\n\ | |
15781 | %OPTIONS%\n\ | |
15782 | \n\ | |
15783 | A read watchpoint stops execution of your program whenever the value of\n\ | |
15784 | an expression is read."), opts); | |
15785 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
15786 | rwatch_help.c_str ()); | |
15787 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15788 | ||
15789 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
15790 | Set an access watchpoint for EXPRESSION.\n\ | |
15791 | Usage: awatch [-location] EXPRESSION\n\ | |
15792 | \n\ | |
15793 | Options:\n\ | |
15794 | %OPTIONS%\n\ | |
15795 | \n\ | |
15796 | An access watchpoint stops execution of your program whenever the value\n\ | |
15797 | of an expression is either read or written."), opts); | |
15798 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
15799 | awatch_help.c_str ()); | |
15800 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 15801 | |
11db9430 | 15802 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15803 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15804 | |
920d2a44 AC |
15805 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15806 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15807 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15808 | &can_use_hw_watchpoints, _("\ | |
15809 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15810 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15811 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15812 | such is available. (However, any hardware watchpoints that were\n\ | |
15813 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15814 | hardware.)"), |
15815 | NULL, | |
920d2a44 | 15816 | show_can_use_hw_watchpoints, |
85c07804 | 15817 | &setlist, &showlist); |
c906108c SS |
15818 | |
15819 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15820 | |
1042e4c0 SS |
15821 | /* Tracepoint manipulation commands. */ |
15822 | ||
3947f654 SM |
15823 | cmd_list_element *trace_cmd |
15824 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15825 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15826 | \n" |
15827 | BREAK_ARGS_HELP ("trace") "\n\ | |
15828 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 15829 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 15830 | |
3947f654 SM |
15831 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
15832 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
15833 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
15834 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 15835 | |
7a697b8d | 15836 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15837 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15838 | \n" |
15839 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15840 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15841 | set_cmd_completer (c, location_completer); | |
15842 | ||
0fb4aa4b | 15843 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15844 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15845 | \n\ |
15846 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15847 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15848 | or -m MARKER_ID.\n\n\ | |
15849 | If a marker id is specified, probe the marker with that name. With\n\ | |
15850 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15851 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15852 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15853 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15854 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15855 | \n\ | |
15856 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15857 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15858 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15859 | conditions are different.\n\ | |
0fb4aa4b PA |
15860 | \n\ |
15861 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15862 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15863 | set_cmd_completer (c, location_completer); | |
15864 | ||
e0f25bd9 SM |
15865 | cmd_list_element *info_tracepoints_cmd |
15866 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 15867 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15868 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15869 | last tracepoint set.")); | |
15870 | ||
e0f25bd9 | 15871 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 15872 | |
5e84b7ee SM |
15873 | cmd_list_element *delete_tracepoints_cmd |
15874 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
15875 | Delete specified tracepoints.\n\ |
15876 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15877 | No argument means delete all tracepoints."), | |
15878 | &deletelist); | |
5e84b7ee | 15879 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
15880 | |
15881 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15882 | Disable specified tracepoints.\n\ | |
15883 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15884 | No argument means disable all tracepoints."), | |
15885 | &disablelist); | |
15886 | deprecate_cmd (c, "disable"); | |
15887 | ||
15888 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15889 | Enable specified tracepoints.\n\ | |
15890 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15891 | No argument means enable all tracepoints."), | |
15892 | &enablelist); | |
15893 | deprecate_cmd (c, "enable"); | |
15894 | ||
15895 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15896 | Set the passcount for a tracepoint.\n\ | |
15897 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15898 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15899 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15900 | ||
0743fc83 TT |
15901 | add_basic_prefix_cmd ("save", class_breakpoint, |
15902 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 15903 | &save_cmdlist, |
0743fc83 | 15904 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
15905 | |
15906 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15907 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15908 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15909 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15910 | session to restore them."), | |
15911 | &save_cmdlist); | |
15912 | set_cmd_completer (c, filename_completer); | |
15913 | ||
3947f654 SM |
15914 | cmd_list_element *save_tracepoints_cmd |
15915 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15916 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15917 | Use the 'source' command in another debug session to restore them."), |
15918 | &save_cmdlist); | |
3947f654 | 15919 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 15920 | |
3947f654 | 15921 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
15922 | deprecate_cmd (c, "save tracepoints"); |
15923 | ||
3b6acaee | 15924 | add_basic_prefix_cmd ("breakpoint", class_maintenance, _("\ |
590042fc | 15925 | Breakpoint specific settings.\n\ |
fa8d40ab | 15926 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15927 | pending breakpoint behavior."), |
2f822da5 | 15928 | &breakpoint_set_cmdlist, |
3b6acaee TT |
15929 | 0/*allow-unknown*/, &setlist); |
15930 | add_show_prefix_cmd ("breakpoint", class_maintenance, _("\ | |
590042fc | 15931 | Breakpoint specific settings.\n\ |
fa8d40ab | 15932 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15933 | pending breakpoint behavior."), |
2f822da5 | 15934 | &breakpoint_show_cmdlist, |
3b6acaee | 15935 | 0/*allow-unknown*/, &showlist); |
fa8d40ab | 15936 | |
7915a72c AC |
15937 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15938 | &pending_break_support, _("\ | |
15939 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15940 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15941 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15942 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15943 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15944 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15945 | NULL, |
920d2a44 | 15946 | show_pending_break_support, |
6e1d7d6c AC |
15947 | &breakpoint_set_cmdlist, |
15948 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15949 | |
15950 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15951 | |
15952 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15953 | &automatic_hardware_breakpoints, _("\ | |
15954 | Set automatic usage of hardware breakpoints."), _("\ | |
15955 | Show automatic usage of hardware breakpoints."), _("\ | |
15956 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15957 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15958 | a warning will be emitted for such breakpoints."), | |
15959 | NULL, | |
15960 | show_automatic_hardware_breakpoints, | |
15961 | &breakpoint_set_cmdlist, | |
15962 | &breakpoint_show_cmdlist); | |
74960c60 | 15963 | |
a25a5a45 PA |
15964 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15965 | &always_inserted_mode, _("\ | |
74960c60 VP |
15966 | Set mode for inserting breakpoints."), _("\ |
15967 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15968 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15969 | they're created, kept inserted even when execution stops, and removed\n\ | |
15970 | only when the user deletes them. When this mode is off (the default),\n\ | |
15971 | breakpoints are inserted only when execution continues, and removed\n\ | |
15972 | when execution stops."), | |
72d0e2c5 YQ |
15973 | NULL, |
15974 | &show_always_inserted_mode, | |
15975 | &breakpoint_set_cmdlist, | |
15976 | &breakpoint_show_cmdlist); | |
f1310107 | 15977 | |
b775012e LM |
15978 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15979 | condition_evaluation_enums, | |
15980 | &condition_evaluation_mode_1, _("\ | |
15981 | Set mode of breakpoint condition evaluation."), _("\ | |
15982 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15983 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15984 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15985 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15986 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15987 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15988 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 15989 | be set to \"host\"."), |
b775012e LM |
15990 | &set_condition_evaluation_mode, |
15991 | &show_condition_evaluation_mode, | |
15992 | &breakpoint_set_cmdlist, | |
15993 | &breakpoint_show_cmdlist); | |
15994 | ||
f1310107 TJB |
15995 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15996 | Set a breakpoint for an address range.\n\ | |
15997 | break-range START-LOCATION, END-LOCATION\n\ | |
15998 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15999 | LINENUM, for that line in the current file,\n\ | |
16000 | FILE:LINENUM, for that line in that file,\n\ | |
16001 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 16002 | or the start of the range\n\ |
f1310107 TJB |
16003 | FUNCTION, for the first line in that function,\n\ |
16004 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16005 | *ADDRESS, for the instruction at that address.\n\ | |
16006 | \n\ | |
16007 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16008 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16009 | range (including START-LOCATION and END-LOCATION).")); | |
16010 | ||
e7e0cddf | 16011 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16012 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16013 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16014 | location may be a linespec, explicit, or address location.\n" |
16015 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16016 | set_cmd_completer (c, location_completer); |
16017 | ||
16018 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16019 | dprintf_style_enums, &dprintf_style, _("\ | |
16020 | Set the style of usage for dynamic printf."), _("\ | |
16021 | Show the style of usage for dynamic printf."), _("\ | |
16022 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16023 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16024 | console, as with the \"printf\" command.\n\ | |
16025 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16026 | program; by default printf(), but you can choose a different function or\n\ | |
16027 | output stream by setting dprintf-function and dprintf-channel."), | |
16028 | update_dprintf_commands, NULL, | |
16029 | &setlist, &showlist); | |
16030 | ||
16031 | dprintf_function = xstrdup ("printf"); | |
16032 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16033 | &dprintf_function, _("\ | |
590042fc PW |
16034 | Set the function to use for dynamic printf."), _("\ |
16035 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16036 | update_dprintf_commands, NULL, |
16037 | &setlist, &showlist); | |
16038 | ||
16039 | dprintf_channel = xstrdup (""); | |
16040 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16041 | &dprintf_channel, _("\ | |
590042fc PW |
16042 | Set the channel to use for dynamic printf."), _("\ |
16043 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16044 | update_dprintf_commands, NULL, |
16045 | &setlist, &showlist); | |
16046 | ||
d3ce09f5 SS |
16047 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16048 | &disconnected_dprintf, _("\ | |
16049 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16050 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16051 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16052 | even if GDB disconnects or detaches from the target."), | |
16053 | NULL, | |
16054 | NULL, | |
16055 | &setlist, &showlist); | |
16056 | ||
16057 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
16058 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
16059 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
16060 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
16061 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 16062 | |
491144b5 | 16063 | automatic_hardware_breakpoints = true; |
f3b1572e | 16064 | |
c90e7d63 SM |
16065 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
16066 | "breakpoint"); | |
16067 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
16068 | "breakpoint"); | |
c906108c | 16069 | } |